* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2016 */
+/* Copyright (c) The Exim Maintainers 2020 - 2024 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* The main code for delivering a message. */
#include "exim.h"
+#include "transports/smtp.h"
+#include <sys/uio.h>
#include <assert.h>
int transport_count; /* returned transport count value */
BOOL done; /* no more data needed */
uschar *msg; /* error message */
- uschar *return_path; /* return_path for these addresses */
+ const uschar *return_path; /* return_path for these addresses */
} pardata;
/* Values for the process_recipients variable */
/* Mutually recursive functions for marking addresses done. */
-static void child_done(address_item *, uschar *);
-static void address_done(address_item *, uschar *);
+static void child_done(address_item *, const uschar *);
+static void address_done(address_item *, const uschar *);
/* Table for turning base-62 numbers into binary */
static address_item *addr_remote = NULL;
static address_item *addr_route = NULL;
static address_item *addr_succeed = NULL;
-static address_item *addr_dsntmp = NULL;
-static address_item *addr_senddsn = NULL;
static FILE *message_log = NULL;
static BOOL update_spool;
static BOOL remove_journal;
static int parcount = 0;
static pardata *parlist = NULL;
+static struct pollfd *parpoll;
static int return_count;
static uschar *frozen_info = US"";
-static uschar *used_return_path = NULL;
+static const uschar * used_return_path = NULL;
+/*************************************************
+* read as much as requested *
+*************************************************/
+
+/* The syscall read(2) doesn't always returns as much as we want. For
+several reasons it might get less. (Not talking about signals, as syscalls
+are restartable). When reading from a network or pipe connection the sender
+might send in smaller chunks, with delays between these chunks. The read(2)
+may return such a chunk.
+
+The more the writer writes and the smaller the pipe between write and read is,
+the more we get the chance of reading leass than requested. (See bug 2130)
+
+This function read(2)s until we got all the data we *requested*.
+
+Note: This function may block. Use it only if you're sure about the
+amount of data you will get.
+
+Argument:
+ fd the file descriptor to read from
+ buffer pointer to a buffer of size len
+ len the requested(!) amount of bytes
+
+Returns: the amount of bytes read
+*/
+static ssize_t
+readn(int fd, void * buffer, size_t len)
+{
+uschar * next = buffer;
+uschar * end = next + len;
+
+while (next < end)
+ {
+ ssize_t got = read(fd, next, end - next);
+
+ /* I'm not sure if there are signals that can interrupt us,
+ for now I assume the worst */
+ if (got == -1 && errno == EINTR) continue;
+ if (got <= 0) return next - US buffer;
+ next += got;
+ }
+
+return len;
+}
+
+
/*************************************************
* Make a new address item *
*************************************************/
*/
address_item *
-deliver_make_addr(uschar *address, BOOL copy)
+deliver_make_addr(const uschar * address, BOOL copy)
{
-address_item *addr = store_get(sizeof(address_item));
+address_item * addr = store_get(sizeof(address_item), GET_UNTAINTED);
*addr = address_defaults;
if (copy) address = string_copy(address);
addr->address = address;
deliver_address_data = addr->prop.address_data;
deliver_domain_data = addr->prop.domain_data;
deliver_localpart_data = addr->prop.localpart_data;
+router_var = addr->prop.variables;
/* These may be unset for multiple addresses */
deliver_localpart = addr->local_part;
deliver_localpart_prefix = addr->prefix;
+ deliver_localpart_prefix_v = addr->prefix_v;
deliver_localpart_suffix = addr->suffix;
+ deliver_localpart_suffix_v = addr->suffix_v;
for (addr_orig = addr; addr_orig->parent; addr_orig = addr_orig->parent) ;
deliver_domain_orig = addr_orig->domain;
else if (deliver_localpart[0] == '|') address_pipe = addr->local_part;
deliver_localpart = addr->parent->local_part;
deliver_localpart_prefix = addr->parent->prefix;
+ deliver_localpart_prefix_v = addr->parent->prefix_v;
deliver_localpart_suffix = addr->parent->suffix;
+ deliver_localpart_suffix_v = addr->parent->suffix_v;
}
}
else
{
- address_item *addr2;
if (testflag(addr, af_pfr))
{
if (testflag(addr, af_file)) address_file = addr->local_part;
else if (addr->local_part[0] == '|') address_pipe = addr->local_part;
}
- for (addr2 = addr->next; addr2; addr2 = addr2->next)
+ for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next)
{
if (deliver_domain && Ustrcmp(deliver_domain, addr2->domain) != 0)
deliver_domain = NULL;
static int
open_msglog_file(uschar *filename, int mode, uschar **error)
{
-int fd, i;
+if (Ustrstr(filename, US"/../"))
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE,
+ "Attempt to open msglog file path with upward-traversal: '%s'\n", filename);
-for (i = 2; i > 0; i--)
+for (int i = 2; i > 0; i--)
{
- fd = Uopen(filename,
-#ifdef O_CLOEXEC
- O_CLOEXEC |
-#endif
-#ifdef O_NOFOLLOW
- O_NOFOLLOW |
-#endif
- O_WRONLY|O_APPEND|O_CREAT, mode);
+ int fd = Uopen(filename,
+ EXIM_CLOEXEC | EXIM_NOFOLLOW | O_WRONLY|O_APPEND|O_CREAT, mode);
if (fd >= 0)
{
/* Set the close-on-exec flag and change the owner to the exim uid/gid (this
#ifndef O_CLOEXEC
(void)fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
#endif
- if (fchown(fd, exim_uid, exim_gid) < 0)
+ if (exim_fchown(fd, exim_uid, exim_gid, filename) < 0)
{
*error = US"chown";
return -1;
MSGLOG_DIRECTORY_MODE, TRUE);
}
-*error = US"create";
+*error = US"create or open";
return -1;
}
static void
replicate_status(address_item *addr)
{
-address_item *addr2;
-for (addr2 = addr->next; addr2; addr2 = addr2->next)
+for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next)
{
addr2->transport = addr->transport;
addr2->transport_return = addr->transport_return;
addr2->basic_errno = addr->basic_errno;
addr2->more_errno = addr->more_errno;
+ addr2->delivery_time = addr->delivery_time;
addr2->special_action = addr->special_action;
addr2->message = addr->message;
addr2->user_message = addr->user_message;
This enables Exim to use a single SMTP transaction for sending to two entirely
different domains that happen to end up pointing at the same hosts.
+We do not try to batch up different A-record host names that refer to the
+same IP.
+
Arguments:
one points to the first host list
two points to the second host list
else if (one->port != two->port)
return FALSE;
- /* Hosts matched */
+#ifdef SUPPORT_DANE
+ /* DNSSEC equality */
+ if (one->dnssec != two->dnssec) return FALSE;
+#endif
+ /* Hosts matched */
one = one->next;
two = two->next;
}
*/
static BOOL
-same_strings(uschar *one, uschar *two)
+same_strings(const uschar * one, const uschar * two)
{
if (one == two) return TRUE; /* Includes the case where both NULL */
if (!one || !two) return FALSE;
*/
static void
-address_done(address_item *addr, uschar *now)
+address_done(address_item * addr, const uschar * now)
{
-address_item *dup;
-
update_spool = TRUE; /* Ensure spool gets updated */
/* Top-level address */
{
if (addr->transport)
tree_add_nonrecipient(
- string_sprintf("%s/%s", addr->unique + 3, addr->transport->name));
+ string_sprintf("%s/%s", addr->unique + 3, addr->transport->drinst.name));
}
/* Non-homonymous child address */
/* Check the list of duplicate addresses and ensure they are now marked
done as well. */
-for (dup = addr_duplicate; dup; dup = dup->next)
+for (address_item * dup = addr_duplicate; dup; dup = dup->next)
if (Ustrcmp(addr->unique, dup->unique) == 0)
{
tree_add_nonrecipient(dup->unique);
*/
static void
-child_done(address_item *addr, uschar *now)
+child_done(address_item * addr, const uschar * now)
{
-address_item *aa;
while (addr->parent)
{
+ address_item * aa;
+
addr = addr->parent;
- if ((addr->child_count -= 1) > 0) return; /* Incomplete parent */
+ if (--addr->child_count > 0) return; /* Incomplete parent */
address_done(addr, now);
/* Log the completion of all descendents only when there is no ancestor with
fields on incoming lines only.
Arguments:
- s The log line buffer
- sizep Pointer to the buffer size
- ptrp Pointer to current index into buffer
+ g The log line
addr The address to be logged
Returns: New value for s
*/
-static uschar *
-d_log_interface(uschar *s, int *sizep, int *ptrp)
+static gstring *
+d_log_interface(gstring * g)
{
if (LOGGING(incoming_interface) && LOGGING(outgoing_interface)
&& sending_ip_address)
{
- s = string_append(s, sizep, ptrp, 2, US" I=[", sending_ip_address);
- s = LOGGING(outgoing_port)
- ? string_append(s, sizep, ptrp, 2, US"]:",
- string_sprintf("%d", sending_port))
- : string_catn(s, sizep, ptrp, US"]", 1);
+ g = string_fmt_append(g, " I=[%s]", sending_ip_address);
+ if (LOGGING(outgoing_port))
+ g = string_fmt_append(g, ":%d", sending_port);
}
-return s;
+return g;
}
-static uschar *
-d_hostlog(uschar * s, int * sp, int * pp, address_item * addr)
+static gstring *
+d_hostlog(gstring * g, address_item * addr)
{
host_item * h = addr->host_used;
-s = string_append(s, sp, pp, 2, US" H=", h->name);
+g = string_append(g, 2, US" H=", h->name);
if (LOGGING(dnssec) && h->dnssec == DS_YES)
- s = string_catn(s, sp, pp, US" DS", 3);
+ g = string_catn(g, US" DS", 3);
-s = string_append(s, sp, pp, 3, US" [", h->address, US"]");
+g = string_append(g, 3, US" [", h->address, US"]");
if (LOGGING(outgoing_port))
- s = string_append(s, sp, pp, 2, US":", string_sprintf("%d", h->port));
+ g = string_fmt_append(g, ":%d", h->port);
+
+if (testflag(addr, af_cont_conn))
+ g = string_catn(g, US"*", 1);
#ifdef SUPPORT_SOCKS
if (LOGGING(proxy) && proxy_local_address)
{
- s = string_append(s, sp, pp, 3, US" PRX=[", proxy_local_address, US"]");
+ g = string_append(g, 3, US" PRX=[", proxy_local_address, US"]");
if (LOGGING(outgoing_port))
- s = string_append(s, sp, pp, 2, US":", string_sprintf("%d",
- proxy_local_port));
+ g = string_fmt_append(g, ":%d", proxy_local_port);
}
#endif
-return d_log_interface(s, sp, pp);
+g = d_log_interface(g);
+
+if (testflag(addr, af_tcp_fastopen))
+ g = string_catn(g, US" TFO*", testflag(addr, af_tcp_fastopen_data) ? 5 : 4);
+
+return g;
}
-#ifdef SUPPORT_TLS
-static uschar *
-d_tlslog(uschar * s, int * sizep, int * ptrp, address_item * addr)
+#ifndef DISABLE_TLS
+static gstring *
+d_tlslog(gstring * g, address_item * addr)
{
if (LOGGING(tls_cipher) && addr->cipher)
- s = string_append(s, sizep, ptrp, 2, US" X=", addr->cipher);
+ {
+ g = string_append(g, 2, US" X=", addr->cipher);
+#ifndef DISABLE_TLS_RESUME
+ if (LOGGING(tls_resumption) && testflag(addr, af_tls_resume))
+ g = string_catn(g, US"*", 1);
+#endif
+ }
if (LOGGING(tls_certificate_verified) && addr->cipher)
- s = string_append(s, sizep, ptrp, 2, US" CV=",
+ g = string_append(g, 2, US" CV=",
testflag(addr, af_cert_verified)
?
-#ifdef EXPERIMENTAL_DANE
+#ifdef SUPPORT_DANE
testflag(addr, af_dane_verified)
? "dane"
:
"yes"
: "no");
if (LOGGING(tls_peerdn) && addr->peerdn)
- s = string_append(s, sizep, ptrp, 3, US" DN=\"",
- string_printing(addr->peerdn), US"\"");
-return s;
+ g = string_append(g, 3, US" DN=\"", string_printing(addr->peerdn), US"\"");
+return g;
}
#endif
#ifndef DISABLE_EVENT
+/* Distribute a named event to any listeners.
+
+Args: action config option specifying listener
+ event name of the event
+ ev_data associated data for the event
+ errnop pointer to errno for modification, or null
+
+Return: string expansion from listener, or NULL
+*/
+
uschar *
-event_raise(uschar * action, const uschar * event, uschar * ev_data)
+event_raise(const uschar * action, const uschar * event, const uschar * ev_data,
+ int * errnop)
{
-uschar * s;
+const uschar * s;
if (action)
{
DEBUG(D_deliver)
event_name = event;
event_data = ev_data;
- if (!(s = expand_string(action)) && *expand_string_message)
+ if (!(s = expand_cstring(action)) && *expand_string_message)
log_write(0, LOG_MAIN|LOG_PANIC,
"failed to expand event_action %s in %s: %s\n",
- event, transport_name, expand_string_message);
+ event, transport_name ? transport_name : US"main", expand_string_message);
event_name = event_data = NULL;
/* If the expansion returns anything but an empty string, flag for
- the caller to modify his normal processing
+ the caller to modify his normal processing. Copy the string to
+ de-const it.
*/
if (s && *s)
{
DEBUG(D_deliver)
debug_printf("Event(%s): event_action returned \"%s\"\n", event, s);
- return s;
+ if (errnop)
+ *errnop = ERRNO_EVENT;
+ return string_copy(s);
}
}
return NULL;
msg_event_raise(const uschar * event, const address_item * addr)
{
const uschar * save_domain = deliver_domain;
-uschar * save_local = deliver_localpart;
+const uschar * save_local = deliver_localpart;
const uschar * save_host = deliver_host;
const uschar * save_address = deliver_host_address;
+const uschar * save_rn = router_name;
+const uschar * save_tn = transport_name;
const int save_port = deliver_host_port;
-if (!addr->transport)
- return;
-
-router_name = addr->router ? addr->router->name : NULL;
-transport_name = addr->transport->name;
+router_name = addr->router ? addr->router->drinst.name : NULL;
deliver_domain = addr->domain;
deliver_localpart = addr->local_part;
deliver_host = addr->host_used ? addr->host_used->name : NULL;
-(void) event_raise(addr->transport->event_action, event,
- addr->host_used
- || Ustrcmp(addr->transport->driver_name, "smtp") == 0
- || Ustrcmp(addr->transport->driver_name, "lmtp") == 0
- ? addr->message : NULL);
+if (!addr->transport)
+ {
+ if (Ustrcmp(event, "msg:fail:delivery") == 0)
+ {
+ /* An address failed with no transport involved. This happens when
+ a filter was used which triggered a fail command (in such a case
+ a transport isn't needed). Convert it to an internal fail event. */
+
+ (void) event_raise(event_action, US"msg:fail:internal", addr->message, NULL);
+ }
+ }
+else
+ {
+ const uschar * dr_name = addr->transport->drinst.driver_name;
+
+ transport_name = addr->transport->drinst.name;
+ (void) event_raise(addr->transport->event_action, event,
+ addr->host_used
+ || Ustrcmp(dr_name, "smtp") == 0
+ || Ustrcmp(dr_name, "lmtp") == 0
+ || Ustrcmp(dr_name, "autoreply") == 0
+ ? addr->message : NULL,
+ NULL);
+ }
deliver_host_port = save_port;
deliver_host_address = save_address;
deliver_host = save_host;
deliver_localpart = save_local;
deliver_domain = save_domain;
-router_name = transport_name = NULL;
+router_name = save_rn;
+transport_name = save_tn;
}
#endif /*DISABLE_EVENT*/
/*************************************************
-* Generate local prt for logging *
+* Generate local part for logging *
*************************************************/
+static const uschar *
+string_get_lpart_sub(const address_item * addr, const uschar * s)
+{
+#ifdef SUPPORT_I18N
+if (testflag(addr, af_utf8_downcvt))
+ {
+ const uschar * t = string_localpart_utf8_to_alabel(s, NULL);
+ return t ? t : s; /* t is NULL on a failed conversion */
+ }
+#endif
+return s;
+}
+
/* This function is a subroutine for use in string_log_address() below.
Arguments:
addr the address being logged
yield the current dynamic buffer pointer
- sizeptr points to current size
- ptrptr points to current insert pointer
Returns: the new value of the buffer pointer
*/
-static uschar *
-string_get_localpart(address_item *addr, uschar *yield, int *sizeptr,
- int *ptrptr)
+static gstring *
+string_get_localpart(address_item * addr, gstring * yield)
{
-uschar * s;
+const uschar * s;
-s = addr->prefix;
-if (testflag(addr, af_include_affixes) && s)
- {
-#ifdef SUPPORT_I18N
- if (testflag(addr, af_utf8_downcvt))
- s = string_localpart_utf8_to_alabel(s, NULL);
-#endif
- yield = string_cat(yield, sizeptr, ptrptr, s);
- }
+if (testflag(addr, af_include_affixes) && (s = addr->prefix))
+ yield = string_cat(yield, string_get_lpart_sub(addr, s));
-s = addr->local_part;
-#ifdef SUPPORT_I18N
-if (testflag(addr, af_utf8_downcvt))
- s = string_localpart_utf8_to_alabel(s, NULL);
-#endif
-yield = string_cat(yield, sizeptr, ptrptr, s);
+yield = string_cat(yield, string_get_lpart_sub(addr, addr->local_part));
-s = addr->suffix;
-if (testflag(addr, af_include_affixes) && s)
- {
-#ifdef SUPPORT_I18N
- if (testflag(addr, af_utf8_downcvt))
- s = string_localpart_utf8_to_alabel(s, NULL);
-#endif
- yield = string_cat(yield, sizeptr, ptrptr, s);
- }
+if (testflag(addr, af_include_affixes) && (s = addr->suffix))
+ yield = string_cat(yield, string_get_lpart_sub(addr, s));
return yield;
}
case, we include the affixes here too.
Arguments:
- str points to start of growing string, or NULL
- size points to current allocation for string
- ptr points to offset for append point; updated on exit
+ g points to growing-string struct
addr bottom (ultimate) address
all_parents if TRUE, include all parents
success TRUE for successful delivery
Returns: a growable string in dynamic store
*/
-static uschar *
-string_log_address(uschar * str, int * size, int * ptr,
+static gstring *
+string_log_address(gstring * g,
address_item *addr, BOOL all_parents, BOOL success)
{
BOOL add_topaddr = TRUE;
/* We start with just the local part for pipe, file, and reply deliveries, and
for successful local deliveries from routers that have the log_as_local flag
set. File deliveries from filters can be specified as non-absolute paths in
-cases where the transport is goin to complete the path. If there is an error
+cases where the transport is going to complete the path. If there is an error
before this happens (expansion failure) the local part will not be updated, and
so won't necessarily look like a path. Add extra text for this case. */
if ( testflag(addr, af_pfr)
|| ( success
&& addr->router && addr->router->log_as_local
- && addr->transport && addr->transport->info->local
+ && addr->transport
+ && ((transport_info *)addr->transport->drinst.info)->local
) )
{
if (testflag(addr, af_file) && addr->local_part[0] != '/')
- str = string_catn(str, size, ptr, CUS"save ", 5);
- str = string_get_localpart(addr, str, size, ptr);
+ g = string_catn(g, CUS"save ", 5);
+ g = string_get_localpart(addr, g);
}
/* Other deliveries start with the full address. It we have split it into local
else
{
- uschar * cmp = str + *ptr;
+ uschar * cmp;
+ int off = gstring_length(g); /* start of the "full address" */
if (addr->local_part)
{
const uschar * s;
- str = string_get_localpart(addr, str, size, ptr);
- str = string_catn(str, size, ptr, US"@", 1);
+ g = string_get_localpart(addr, g);
+ g = string_catn(g, US"@", 1);
s = addr->domain;
#ifdef SUPPORT_I18N
if (testflag(addr, af_utf8_downcvt))
s = string_localpart_utf8_to_alabel(s, NULL);
#endif
- str = string_cat(str, size, ptr, s);
+ g = string_cat(g, s);
}
else
- str = string_cat(str, size, ptr, addr->address);
+ g = string_cat(g, addr->address);
/* If the address we are going to print is the same as the top address,
and all parents are not being included, don't add on the top address. First
of all, do a caseless comparison; if this succeeds, do a caseful comparison
on the local parts. */
- str[*ptr] = 0;
+ cmp = g->s + off; /* only now, as rebuffer likely done */
+ string_from_gstring(g); /* ensure nul-terminated */
if ( strcmpic(cmp, topaddr->address) == 0
&& Ustrncmp(cmp, topaddr->address, Ustrchr(cmp, '@') - cmp) == 0
&& !addr->onetime_parent
&& addr->parent != topaddr)
{
uschar *s = US" (";
- address_item *addr2;
- for (addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent)
+ for (address_item * addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent)
{
- str = string_catn(str, size, ptr, s, 2);
- str = string_cat (str, size, ptr, addr2->address);
+ g = string_catn(g, s, 2);
+ g = string_cat (g, addr2->address);
if (!all_parents) break;
s = US", ";
}
- str = string_catn(str, size, ptr, US")", 1);
+ g = string_catn(g, US")", 1);
}
/* Add the top address if it is required */
if (add_topaddr)
- str = string_append(str, size, ptr, 3,
+ g = string_append(g, 3,
US" <",
addr->onetime_parent ? addr->onetime_parent : topaddr->address,
US">");
-return str;
+return g;
}
+
/******************************************************************************/
void
delivery_log(int flags, address_item * addr, int logchar, uschar * msg)
{
-int size = 256; /* Used for a temporary, */
-int ptr = 0; /* expanding buffer, for */
-uschar * s; /* building log lines; */
-void * reset_point; /* released afterwards. */
+gstring * g; /* Used for a temporary, expanding buffer, for building log lines */
+rmark reset_point;
/* Log the delivery on the main log. We use an extensible string to build up
the log line, and reset the store afterwards. Remote deliveries should always
lookup_dnssec_authenticated = NULL;
#endif
-s = reset_point = store_get(size);
+reset_point = store_mark();
+g = string_get_tainted(256, GET_TAINTED); /* addrs will be tainted, so avoid copy */
if (msg)
- s = string_append(s, &size, &ptr, 2, host_and_ident(TRUE), US" ");
+ g = string_append(g, 2, host_and_ident(TRUE), US" ");
else
{
- s[ptr++] = logchar;
- s = string_catn(s, &size, &ptr, US"> ", 2);
+ g->s[0] = logchar; g->ptr = 1;
+ g = string_catn(g, US"> ", 2);
}
-s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), TRUE);
+g = string_log_address(g, addr, LOGGING(all_parents), TRUE);
if (LOGGING(sender_on_delivery) || msg)
- s = string_append(s, &size, &ptr, 3, US" F=<",
+ g = string_append(g, 3, US" F=<",
#ifdef SUPPORT_I18N
testflag(addr, af_utf8_downcvt)
? string_address_utf8_to_alabel(sender_address, NULL)
US">");
if (*queue_name)
- s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
-
-#ifdef EXPERIMENTAL_SRS
-if(addr->prop.srs_sender)
- s = string_append(s, &size, &ptr, 3, US" SRS=<", addr->prop.srs_sender, US">");
-#endif
+ g = string_append(g, 2, US" Q=", queue_name);
/* You might think that the return path must always be set for a successful
delivery; indeed, I did for some time, until this statement crashed. The case
being run at all. */
if (used_return_path && LOGGING(return_path_on_delivery))
- s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
+ g = string_append(g, 3, US" P=<", used_return_path, US">");
if (msg)
- s = string_append(s, &size, &ptr, 2, US" ", msg);
+ g = string_append(g, 2, US" ", msg);
/* For a delivery from a system filter, there may not be a router */
if (addr->router)
- s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
+ g = string_append(g, 2, US" R=", addr->router->drinst.name);
-s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
+g = string_append(g, 2, US" T=", addr->transport->drinst.name);
if (LOGGING(delivery_size))
- s = string_append(s, &size, &ptr, 2, US" S=",
- string_sprintf("%d", transport_count));
+ g = string_fmt_append(g, " S=%d", transport_count);
/* Local delivery */
-if (addr->transport->info->local)
+if (((transport_info *)addr->transport->drinst.info)->local)
{
if (addr->host_list)
- s = string_append(s, &size, &ptr, 2, US" H=", addr->host_list->name);
- s = d_log_interface(s, &size, &ptr);
+ g = string_append(g, 2, US" H=", addr->host_list->name);
+ g = d_log_interface(g);
if (addr->shadow_message)
- s = string_cat(s, &size, &ptr, addr->shadow_message);
+ g = string_cat(g, addr->shadow_message);
}
/* Remote delivery */
{
if (addr->host_used)
{
- s = d_hostlog(s, &size, &ptr, addr);
- if (continue_sequence > 1)
- s = string_catn(s, &size, &ptr, US"*", 1);
+ g = d_hostlog(g, addr);
#ifndef DISABLE_EVENT
deliver_host_address = addr->host_used->address;
#endif
}
-#ifdef SUPPORT_TLS
- s = d_tlslog(s, &size, &ptr, addr);
+#ifndef DISABLE_TLS
+ g = d_tlslog(g, addr);
#endif
if (addr->authenticator)
{
- s = string_append(s, &size, &ptr, 2, US" A=", addr->authenticator);
+ g = string_append(g, 2, US" A=", addr->authenticator);
if (addr->auth_id)
{
- s = string_append(s, &size, &ptr, 2, US":", addr->auth_id);
+ g = string_append(g, 2, US":", addr->auth_id);
if (LOGGING(smtp_mailauth) && addr->auth_sndr)
- s = string_append(s, &size, &ptr, 2, US":", addr->auth_sndr);
+ g = string_append(g, 2, US":", addr->auth_sndr);
}
}
+ if (LOGGING(pipelining))
+ {
+ if (testflag(addr, af_pipelining))
+ g = string_catn(g, US" L", 2);
+#ifndef DISABLE_PIPE_CONNECT
+ if (testflag(addr, af_early_pipe))
+ g = string_catn(g, US"*", 1);
+#endif
+ }
+
#ifndef DISABLE_PRDR
- if (addr->flags & af_prdr_used)
- s = string_catn(s, &size, &ptr, US" PRDR", 5);
+ if (testflag(addr, af_prdr_used))
+ g = string_catn(g, US" PRDR", 5);
#endif
- if (addr->flags & af_chunking_used)
- s = string_catn(s, &size, &ptr, US" K", 2);
+ if (testflag(addr, af_chunking_used))
+ g = string_catn(g, US" K", 2);
}
+#ifndef DISABLE_DKIM
+ if (addr->dkim_used && LOGGING(dkim_verbose))
+ {
+ g = string_catn(g, US" DKIM=", 6);
+ g = string_cat(g, addr->dkim_used);
+ }
+#endif
+
/* confirmation message (SMTP (host_used) and LMTP (driver_name)) */
if ( LOGGING(smtp_confirmation)
&& addr->message
- && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0)
+ && ( addr->host_used
+ || Ustrcmp(addr->transport->drinst.driver_name, "lmtp") == 0)
)
{
- unsigned i;
unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024;
uschar *p = big_buffer;
uschar *ss = addr->message;
*p++ = '\"';
- for (i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */
+ for (int i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */
{
if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */
*p++ = ss[i];
}
*p++ = '\"';
*p = 0;
- s = string_append(s, &size, &ptr, 2, US" C=", big_buffer);
+ g = string_append(g, 2, US" C=", big_buffer);
}
/* Time on queue and actual time taken to deliver */
if (LOGGING(queue_time))
- s = string_append(s, &size, &ptr, 2, US" QT=",
- readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
+ g = string_append(g, 2, US" QT=", string_timesince(
+ LOGGING(queue_time_exclusive) ? &received_time_complete : &received_time));
if (LOGGING(deliver_time))
- s = string_append(s, &size, &ptr, 2, US" DT=",
- readconf_printtime(addr->more_errno));
+ g = string_append(g, 2, US" DT=", string_timediff(&addr->delivery_time));
/* string_cat() always leaves room for the terminator. Release the
store we used to build the line after writing it. */
-s[ptr] = 0;
-log_write(0, flags, "%s", s);
+log_write(0, flags, "%Y", g);
#ifndef DISABLE_EVENT
if (!msg) msg_event_raise(US"msg:delivery", addr);
deferral_log(address_item * addr, uschar * now,
int logflags, uschar * driver_name, uschar * driver_kind)
{
-int size = 256; /* Used for a temporary, */
-int ptr = 0; /* expanding buffer, for */
-uschar * s; /* building log lines; */
-void * reset_point; /* released afterwards. */
-
-uschar ss[32];
+rmark reset_point = store_mark();
+gstring * g = string_get(256);
/* Build up the line that is used for both the message log and the main
log. */
-s = reset_point = store_get(size);
-
/* Create the address string for logging. Must not do this earlier, because
an OK result may be changed to FAIL when a pipe returns text. */
-s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), FALSE);
+g = string_log_address(g, addr, LOGGING(all_parents), FALSE);
if (*queue_name)
- s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
+ g = string_append(g, 2, US" Q=", queue_name);
/* Either driver_name contains something and driver_kind contains
" router" or " transport" (note the leading space), or driver_name is
if (driver_name)
{
if (driver_kind[1] == 't' && addr->router)
- s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
- Ustrcpy(ss, " ?=");
- ss[1] = toupper(driver_kind[1]);
- s = string_append(s, &size, &ptr, 2, ss, driver_name);
+ g = string_append(g, 2, US" R=", addr->router->drinst.name);
+ g = string_fmt_append(g, " %c=%s", toupper(driver_kind[1]), driver_name);
}
else if (driver_kind)
- s = string_append(s, &size, &ptr, 2, US" ", driver_kind);
+ g = string_append(g, 2, US" ", driver_kind);
-/*XXX need an s+s+p sprintf */
-sprintf(CS ss, " defer (%d)", addr->basic_errno);
-s = string_cat(s, &size, &ptr, ss);
+g = string_fmt_append(g, " defer (%d)", addr->basic_errno);
if (addr->basic_errno > 0)
- s = string_append(s, &size, &ptr, 2, US": ",
- US strerror(addr->basic_errno));
+ g = string_append(g, 2, US": ", US strerror(addr->basic_errno));
if (addr->host_used)
- {
- s = string_append(s, &size, &ptr, 5,
- US" H=", addr->host_used->name,
- US" [", addr->host_used->address, US"]");
- if (LOGGING(outgoing_port))
- {
- int port = addr->host_used->port;
- s = string_append(s, &size, &ptr, 2,
- US":", port == PORT_NONE ? US"25" : string_sprintf("%d", port));
- }
- }
+ g = d_hostlog(g, addr);
-if (addr->message)
- s = string_append(s, &size, &ptr, 2, US": ", addr->message);
+if (LOGGING(deliver_time))
+ g = string_append(g, 2, US" DT=", string_timediff(&addr->delivery_time));
-s[ptr] = 0;
+if (addr->message)
+ g = string_append(g, 2, US": ", addr->message);
/* Log the deferment in the message log, but don't clutter it
up with retry-time defers after the first delivery attempt. */
-if (deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE)
- deliver_msglog("%s %s\n", now, s);
+if (f.deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE)
+ deliver_msglog("%s %.*s\n", now, g->ptr, g->s);
/* Write the main log and reset the store.
For errors of the type "retry time not reached" (also remotes skipped
log_write(addr->basic_errno <= ERRNO_RETRY_BASE ? L_retry_defer : 0, logflags,
- "== %s", s);
+ "== %Y", g);
store_reset(reset_point);
return;
static void
failure_log(address_item * addr, uschar * driver_kind, uschar * now)
{
-int size = 256; /* Used for a temporary, */
-int ptr = 0; /* expanding buffer, for */
-uschar * s; /* building log lines; */
-void * reset_point; /* released afterwards. */
+rmark reset_point = store_mark();
+gstring * g = string_get(256);
-/* Build up the log line for the message and main logs */
+#ifndef DISABLE_EVENT
+/* Message failures for which we will send a DSN get their event raised
+later so avoid doing it here. */
+
+if ( !addr->prop.ignore_error
+ && !(addr->dsn_flags & (rf_dsnflags & ~rf_notify_failure))
+ )
+ msg_event_raise(US"msg:fail:delivery", addr);
+#endif
-s = reset_point = store_get(size);
+/* Build up the log line for the message and main logs */
/* Create the address string for logging. Must not do this earlier, because
an OK result may be changed to FAIL when a pipe returns text. */
-s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), FALSE);
+g = string_log_address(g, addr, LOGGING(all_parents), FALSE);
if (LOGGING(sender_on_delivery))
- s = string_append(s, &size, &ptr, 3, US" F=<", sender_address, US">");
+ g = string_append(g, 3, US" F=<", sender_address, US">");
if (*queue_name)
- s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
+ g = string_append(g, 2, US" Q=", queue_name);
/* Return path may not be set if no delivery actually happened */
if (used_return_path && LOGGING(return_path_on_delivery))
- s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
+ g = string_append(g, 3, US" P=<", used_return_path, US">");
if (addr->router)
- s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
+ g = string_append(g, 2, US" R=", addr->router->drinst.name);
if (addr->transport)
- s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
+ g = string_append(g, 2, US" T=", addr->transport->drinst.name);
if (addr->host_used)
- s = d_hostlog(s, &size, &ptr, addr);
+ g = d_hostlog(g, addr);
-#ifdef SUPPORT_TLS
-s = d_tlslog(s, &size, &ptr, addr);
+#ifndef DISABLE_TLS
+g = d_tlslog(g, addr);
#endif
if (addr->basic_errno > 0)
- s = string_append(s, &size, &ptr, 2, US": ", US strerror(addr->basic_errno));
+ g = string_append(g, 2, US": ", US strerror(addr->basic_errno));
if (addr->message)
- s = string_append(s, &size, &ptr, 2, US": ", addr->message);
+ g = string_append(g, 2, US": ", addr->message);
-s[ptr] = 0;
+if (LOGGING(deliver_time))
+ g = string_append(g, 2, US" DT=", string_timediff(&addr->delivery_time));
/* Do the logging. For the message log, "routing failed" for those cases,
just to make it clearer. */
if (driver_kind)
- deliver_msglog("%s %s failed for %s\n", now, driver_kind, s);
+ deliver_msglog("%s %s failed for %.*s\n", now, driver_kind, g->ptr, g->s);
else
- deliver_msglog("%s %s\n", now, s);
-
-log_write(0, LOG_MAIN, "** %s", s);
+ deliver_msglog("%s %.*s\n", now, g->ptr, g->s);
-#ifndef DISABLE_EVENT
-msg_event_raise(US"msg:fail:delivery", addr);
-#endif
+log_write(0, LOG_MAIN, "** %Y", g);
store_reset(reset_point);
return;
*/
static void
-post_process_one(address_item *addr, int result, int logflags, int driver_type,
+post_process_one(address_item * addr, int result, int logflags, int driver_type,
int logchar)
{
-uschar *now = tod_stamp(tod_log);
-uschar *driver_kind = NULL;
-uschar *driver_name = NULL;
+uschar * now = tod_stamp(tod_log);
+uschar * driver_kind = NULL;
+uschar * driver_name = NULL;
DEBUG(D_deliver) debug_printf("post-process %s (%d)\n", addr->address, result);
/* Set up driver kind and name for logging. Disable logging if the router or
transport has disabled it. */
-if (driver_type == DTYPE_TRANSPORT)
+if (driver_type == EXIM_DTYPE_TRANSPORT)
{
if (addr->transport)
{
- driver_name = addr->transport->name;
+ driver_name = addr->transport->drinst.name;
driver_kind = US" transport";
- disable_logging = addr->transport->disable_logging;
+ f.disable_logging = addr->transport->disable_logging;
}
else driver_kind = US"transporting";
}
-else if (driver_type == DTYPE_ROUTER)
+else if (driver_type == EXIM_DTYPE_ROUTER)
{
if (addr->router)
{
- driver_name = addr->router->name;
+ driver_name = addr->router->drinst.name;
driver_kind = US" router";
- disable_logging = addr->router->disable_logging;
+ f.disable_logging = addr->router->disable_logging;
}
else driver_kind = US"routing";
}
if (fstat(addr->return_file, &statbuf) == 0 && statbuf.st_size > 0)
{
- transport_instance *tb = addr->transport;
+ transport_instance * tb = addr->transport;
/* Handle logging options */
|| result == DEFER && tb->log_defer_output
)
{
- uschar *s;
- FILE *f = Ufopen(addr->return_filename, "rb");
+ uschar * s;
+ FILE * f = Ufopen(addr->return_filename, "rb");
if (!f)
log_write(0, LOG_MAIN|LOG_PANIC, "failed to open %s to log output "
- "from %s transport: %s", addr->return_filename, tb->name,
+ "from %s transport: %s", addr->return_filename, tb->drinst.name,
strerror(errno));
else
if ((s = US Ufgets(big_buffer, big_buffer_size, f)))
*p = 0;
sp = string_printing(big_buffer);
log_write(0, LOG_MAIN, "<%s>: %s transport output: %s",
- addr->address, tb->name, sp);
+ addr->address, tb->drinst.name, sp);
}
- (void)fclose(f);
+ (void)fclose(f);
}
/* Handle returning options, but only if there is an address to return
}
/* Certificates for logging (via events) */
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
tls_out.ourcert = addr->ourcert;
addr->ourcert = NULL;
tls_out.peercert = addr->peercert;
addr->peercert = NULL;
+ tls_out.ver = addr->tlsver;
tls_out.cipher = addr->cipher;
tls_out.peerdn = addr->peerdn;
tls_out.ocsp = addr->ocsp;
-# ifdef EXPERIMENTAL_DANE
+# ifdef SUPPORT_DANE
tls_out.dane_verified = testflag(addr, af_dane_verified);
# endif
#endif
delivery_log(LOG_MAIN, addr, logchar, NULL);
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
tls_free_cert(&tls_out.ourcert);
tls_free_cert(&tls_out.peercert);
+ tls_out.ver = NULL;
tls_out.cipher = NULL;
tls_out.peerdn = NULL;
tls_out.ocsp = OCSP_NOT_REQ;
-# ifdef EXPERIMENTAL_DANE
+# ifdef SUPPORT_DANE
tls_out.dane_verified = FALSE;
# endif
#endif
if (addr->special_action == SPECIAL_FREEZE)
{
- deliver_freeze = TRUE;
+ f.deliver_freeze = TRUE;
deliver_frozen_at = time(NULL);
update_spool = TRUE;
}
/* If doing a 2-stage queue run, we skip writing to either the message
log or the main log for SMTP defers. */
- if (!queue_2stage || addr->basic_errno != 0)
+ if (!f.queue_2stage || addr->basic_errno != 0)
deferral_log(addr, now, logflags, driver_name, driver_kind);
}
later (with a log entry). */
if (!*sender_address && message_age >= ignore_bounce_errors_after)
- setflag(addr, af_ignore_error);
+ addr->prop.ignore_error = TRUE;
/* Freeze the message if requested, or if this is a bounce message (or other
message with null sender) and this address does not have its own errors
to ignore occurs later, instead of sending a message. Logging of freezing
occurs later, just before writing the -H file. */
- if ( !testflag(addr, af_ignore_error)
+ if ( !addr->prop.ignore_error
&& ( addr->special_action == SPECIAL_FREEZE
|| (sender_address[0] == 0 && !addr->prop.errors_address)
) )
{
frozen_info = addr->special_action == SPECIAL_FREEZE
? US""
- : sender_local && !local_error_message
+ : f.sender_local && !f.local_error_message
? US" (message created with -f <>)"
: US" (delivery error message)";
- deliver_freeze = TRUE;
+ f.deliver_freeze = TRUE;
deliver_frozen_at = time(NULL);
update_spool = TRUE;
/* Ensure logging is turned on again in all cases */
-disable_logging = FALSE;
+f.disable_logging = FALSE;
}
static void
common_error(BOOL logit, address_item *addr, int code, uschar *format, ...)
{
-address_item *addr2;
addr->basic_errno = code;
if (format)
{
va_list ap;
- uschar buffer[512];
+ gstring * g;
+
va_start(ap, format);
- if (!string_vformat(buffer, sizeof(buffer), CS format, ap))
- log_write(0, LOG_MAIN|LOG_PANIC_DIE,
- "common_error expansion was longer than " SIZE_T_FMT, sizeof(buffer));
+ g = string_vformat(NULL, SVFMT_EXTEND|SVFMT_REBUFFER, CS format, ap);
va_end(ap);
- addr->message = string_copy(buffer);
+ addr->message = string_from_gstring(g);
}
-for (addr2 = addr->next; addr2; addr2 = addr2->next)
+for (address_item * addr2 = addr->next; addr2; addr2 = addr2->next)
{
addr2->basic_errno = code;
addr2->message = addr->message;
static BOOL
check_never_users(uid_t uid, uid_t *nusers)
{
-int i;
if (!nusers) return FALSE;
-for (i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE;
+for (int i = 1; i <= (int)(nusers[0]); i++) if (nusers[i] == uid) return TRUE;
return FALSE;
}
}
else if (tp->expand_gid)
{
- if (!route_find_expanded_group(tp->expand_gid, tp->name, US"transport", gidp,
- &(addr->message)))
+ GET_OPTION("group");
+ if (!route_find_expanded_group(tp->expand_gid, tp->drinst.name, US"transport",
+ gidp, &addr->message))
{
common_error(FALSE, addr, ERRNO_GIDFAIL, NULL);
return FALSE;
else if (tp->expand_uid)
{
struct passwd *pw;
- if (!route_find_expanded_user(tp->expand_uid, tp->name, US"transport", &pw,
- uidp, &(addr->message)))
+ GET_OPTION("user");
+ if (!route_find_expanded_user(tp->expand_uid, tp->drinst.name, US"transport",
+ &pw, uidp, &(addr->message)))
{
common_error(FALSE, addr, ERRNO_UIDFAIL, NULL);
return FALSE;
if (!gid_set)
{
common_error(TRUE, addr, ERRNO_GIDFAIL, US"User set without group for "
- "%s transport", tp->name);
+ "%s transport", tp->drinst.name);
return FALSE;
}
if (nuname)
{
common_error(TRUE, addr, ERRNO_UIDFAIL, US"User %ld set for %s transport "
- "is on the %s list", (long int)(*uidp), tp->name, nuname);
+ "is on the %s list", (long int)(*uidp), tp->drinst.name, nuname);
return FALSE;
}
int rc = OK;
int size_limit;
+GET_OPTION("message_size_limit");
deliver_set_expansions(addr);
size_limit = expand_string_integer(tp->message_size_limit, TRUE);
deliver_set_expansions(NULL);
rc = DEFER;
addr->message = size_limit == -1
? string_sprintf("failed to expand message_size_limit "
- "in %s transport: %s", tp->name, expand_string_message)
+ "in %s transport: %s", tp->drinst.name, expand_string_message)
: string_sprintf("invalid message_size_limit "
- "in %s transport: %s", tp->name, expand_string_message);
+ "in %s transport: %s", tp->drinst.name, expand_string_message);
}
else if (size_limit > 0 && message_size > size_limit)
{
static BOOL
previously_transported(address_item *addr, BOOL testing)
{
-(void)string_format(big_buffer, big_buffer_size, "%s/%s",
- addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->name);
+uschar * s = string_sprintf("%s/%s",
+ addr->unique + (testflag(addr, af_homonym) ? 3:0),
+ addr->transport->drinst.name);
-if (tree_search(tree_nonrecipients, big_buffer) != 0)
+if (tree_search(tree_nonrecipients, s) != 0)
{
DEBUG(D_deliver|D_route|D_transport)
debug_printf("%s was previously delivered (%s transport): discarded\n",
- addr->address, addr->transport->name);
+ addr->address, addr->transport->drinst.name);
if (!testing) child_done(addr, tod_stamp(tod_log));
return TRUE;
}
/* Each local delivery is performed in a separate process which sets its
uid and gid as specified. This is a safer way than simply changing and
-restoring using seteuid(); there is a body of opinion that seteuid() cannot be
-used safely. From release 4, Exim no longer makes any use of it. Besides, not
-all systems have seteuid().
+restoring using seteuid(); there is a body of opinion that seteuid()
+cannot be used safely. From release 4, Exim no longer makes any use of
+it for delivery. Besides, not all systems have seteuid().
If the uid/gid are specified in the transport_instance, they are used; the
transport initialization must ensure that either both or neither are set.
Returns: nothing
*/
-static void
+void
deliver_local(address_item *addr, BOOL shadowing)
{
BOOL use_initgroups;
pid_t pid;
uschar *working_directory;
address_item *addr2;
-transport_instance *tp = addr->transport;
+transport_instance * tp = addr->transport;
+const uschar * trname = tp->drinst.name;
/* Set up the return path from the errors or sender address. If the transport
has its own return path setting, expand it and replace the existing value. */
if(addr->prop.errors_address)
return_path = addr->prop.errors_address;
-#ifdef EXPERIMENTAL_SRS
-else if (addr->prop.srs_sender)
- return_path = addr->prop.srs_sender;
-#endif
else
return_path = sender_address;
+GET_OPTION("return_path");
if (tp->return_path)
{
- uschar *new_return_path = expand_string(tp->return_path);
- if (!new_return_path)
- {
- if (!expand_string_forcedfail)
- {
- common_error(TRUE, addr, ERRNO_EXPANDFAIL,
- US"Failed to expand return path \"%s\" in %s transport: %s",
- tp->return_path, tp->name, expand_string_message);
- return;
- }
+ uschar * new_return_path = expand_string(tp->return_path);
+ if (new_return_path)
+ return_path = new_return_path;
+ else if (!f.expand_string_forcedfail)
+ {
+ common_error(TRUE, addr, ERRNO_EXPANDFAIL,
+ US"Failed to expand return path \"%s\" in %s transport: %s",
+ tp->return_path, trname, expand_string_message);
+ return;
}
- else return_path = new_return_path;
}
/* For local deliveries, one at a time, the value used for logging can just be
home directory set in the address may already be expanded; a flag is set to
indicate that. In other cases we must expand it. */
+GET_OPTION("home_directory");
if ( (deliver_home = tp->home_dir) /* Set in transport, or */
|| ( (deliver_home = addr->home_dir) /* Set in address and */
&& !testflag(addr, af_home_expanded) /* not expanded */
if (!(deliver_home = expand_string(rawhome)))
{
common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"home directory \"%s\" failed "
- "to expand for %s transport: %s", rawhome, tp->name,
+ "to expand for %s transport: %s", rawhome, trname,
expand_string_message);
return;
}
if (*deliver_home != '/')
{
common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"home directory path \"%s\" "
- "is not absolute for %s transport", deliver_home, tp->name);
+ "is not absolute for %s transport", deliver_home, trname);
return;
}
}
operating systems when running pipes, as some commands (e.g. "rm" under Solaris
2.5) require this. */
+GET_OPTION("current_directory");
working_directory = tp->current_dir ? tp->current_dir : addr->current_dir;
if (working_directory)
{
if (!(working_directory = expand_string(raw)))
{
common_error(TRUE, addr, ERRNO_EXPANDFAIL, US"current directory \"%s\" "
- "failed to expand for %s transport: %s", raw, tp->name,
+ "failed to expand for %s transport: %s", raw, trname,
expand_string_message);
return;
}
if (*working_directory != '/')
{
common_error(TRUE, addr, ERRNO_NOTABSOLUTE, US"current directory path "
- "\"%s\" is not absolute for %s transport", working_directory, tp->name);
+ "\"%s\" is not absolute for %s transport", working_directory, trname);
return;
}
}
addr->return_filename =
spool_fname(US"msglog", message_subdir, message_id,
- string_sprintf("-%d-%d", getpid(), return_count++));
-
+ string_sprintf("-%ld-%d", (long)getpid(), return_count++));
+
if ((addr->return_file = open_msglog_file(addr->return_filename, 0400, &error)) < 0)
{
common_error(TRUE, addr, errno, US"Unable to %s file for %s transport "
- "to return message: %s", error, tp->name, strerror(errno));
+ "to return message: %s", error, trname, strerror(errno));
return;
}
}
search_tidyup();
-if ((pid = fork()) == 0)
+if ((pid = exim_fork(US"delivery-local")) == 0)
{
BOOL replicate = TRUE;
if (addr->transport->setup)
switch((addr->transport->setup)(addr->transport, addr, NULL, uid, gid,
- &(addr->message)))
+ &addr->message))
{
case DEFER:
addr->transport_return = DEFER;
FD_CLOEXEC);
exim_setugid(uid, gid, use_initgroups,
string_sprintf("local delivery to %s <%s> transport=%s", addr->local_part,
- addr->address, addr->transport->name));
+ addr->address, addr->transport->drinst.name));
DEBUG(D_deliver)
{
- address_item *batched;
debug_printf(" home=%s current=%s\n", deliver_home, working_directory);
- for (batched = addr->next; batched; batched = batched->next)
+ for (address_item * batched = addr->next; batched; batched = batched->next)
debug_printf("additional batched address: %s\n", batched->address);
}
{
BOOL ok = TRUE;
set_process_info("delivering %s to %s using %s", message_id,
- addr->local_part, addr->transport->name);
+ addr->local_part, trname);
+
+ /* Setting these globals in the subprocess means we need never clear them */
- /* Setting this global in the subprocess means we need never clear it */
- transport_name = addr->transport->name;
+ transport_name = trname;
+ if (addr->router) router_name = addr->router->drinst.name;
+ driver_srcfile = tp->drinst.srcfile;
+ driver_srcline = tp->drinst.srcline;
/* If a transport filter has been specified, set up its argument list.
Any errors will get put into the address, and FALSE yielded. */
- if (addr->transport->filter_command)
+ if (tp->filter_command)
{
ok = transport_set_up_command(&transport_filter_argv,
- addr->transport->filter_command,
- TRUE, PANIC, addr, US"transport filter", NULL);
- transport_filter_timeout = addr->transport->filter_timeout;
+ tp->filter_command,
+ TSUC_EXPAND_ARGS, PANIC, addr, US"transport filter", NULL);
+ transport_filter_timeout = tp->filter_timeout;
}
else transport_filter_argv = NULL;
if (ok)
{
- debug_print_string(addr->transport->debug_string);
- replicate = !(addr->transport->info->code)(addr->transport, addr);
+ transport_info * ti = tp->drinst.info;
+ debug_print_string(tp->debug_string);
+ replicate = !(ti->code)(addr->transport, addr);
}
}
uschar *s;
int ret;
- if( (ret = write(pfd[pipe_write], &addr2->transport_return, sizeof(int))) != sizeof(int)
+ if( (i = addr2->transport_return, (ret = write(pfd[pipe_write], &i, sizeof(int))) != sizeof(int))
|| (ret = write(pfd[pipe_write], &transport_count, sizeof(transport_count))) != sizeof(transport_count)
|| (ret = write(pfd[pipe_write], &addr2->flags, sizeof(addr2->flags))) != sizeof(addr2->flags)
|| (ret = write(pfd[pipe_write], &addr2->basic_errno, sizeof(int))) != sizeof(int)
|| (ret = write(pfd[pipe_write], &addr2->more_errno, sizeof(int))) != sizeof(int)
- || (ret = write(pfd[pipe_write], &addr2->special_action, sizeof(int))) != sizeof(int)
+ || (ret = write(pfd[pipe_write], &addr2->delivery_time, sizeof(struct timeval))) != sizeof(struct timeval)
+ || (i = addr2->special_action, (ret = write(pfd[pipe_write], &i, sizeof(int))) != sizeof(int))
|| (ret = write(pfd[pipe_write], &addr2->transport,
sizeof(transport_instance *))) != sizeof(transport_instance *)
and close the pipe we were writing down before exiting. */
(void)close(pfd[pipe_write]);
- search_tidyup();
- exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS);
}
/* Back in the main process: panic if the fork did not succeed. This seems
len = read(pfd[pipe_read], &addr2->flags, sizeof(addr2->flags));
len = read(pfd[pipe_read], &addr2->basic_errno, sizeof(int));
len = read(pfd[pipe_read], &addr2->more_errno, sizeof(int));
- len = read(pfd[pipe_read], &addr2->special_action, sizeof(int));
+ len = read(pfd[pipe_read], &addr2->delivery_time, sizeof(struct timeval));
+ len = read(pfd[pipe_read], &i, sizeof(int)); addr2->special_action = i;
len = read(pfd[pipe_read], &addr2->transport,
sizeof(transport_instance *));
if (addr2->transport_return == OK)
{
if (testflag(addr2, af_homonym))
- sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, tp->name);
+ sprintf(CS big_buffer, "%.500s/%s\n", addr2->unique + 3, trname);
else
sprintf(CS big_buffer, "%.500s\n", addr2->unique);
/* In the test harness, wait just a bit to let the subprocess finish off
any debug output etc first. */
- if (running_in_test_harness) millisleep(300);
+ testharness_pause_ms(300);
DEBUG(D_deliver) debug_printf("journalling %s", big_buffer);
len = Ustrlen(big_buffer);
if (rc < 0 && errno == ECHILD) /* Process has vanished */
{
log_write(0, LOG_MAIN, "%s transport process vanished unexpectedly",
- addr->transport->driver_name);
+ addr->transport->drinst.driver_name);
status = 0;
break;
}
addr->special_action = SPECIAL_FREEZE;
log_write(0, LOG_MAIN|LOG_PANIC, "%s transport process returned non-zero "
"status 0x%04x: %s %d",
- addr->transport->driver_name,
+ addr->transport->drinst.driver_name,
status,
msb == 0 ? "terminated by signal" : "exit code",
code);
/* If SPECIAL_WARN is set in the top address, send a warning message. */
-if (addr->special_action == SPECIAL_WARN && addr->transport->warn_message)
+if (addr->special_action == SPECIAL_WARN)
{
- int fd;
- uschar *warn_message;
- pid_t pid;
+ uschar * warn_message = addr->transport->warn_message;
+ GET_OPTION("quota_warn_message");
+ if (warn_message)
+ {
+ int fd;
+ pid_t pid;
- DEBUG(D_deliver) debug_printf("Warning message requested by transport\n");
+ DEBUG(D_deliver) debug_printf("Warning message requested by transport\n");
- if (!(warn_message = expand_string(addr->transport->warn_message)))
- log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning "
- "message for %s transport): %s", addr->transport->warn_message,
- addr->transport->name, expand_string_message);
+ if (!(warn_message = expand_string(warn_message)))
+ log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand \"%s\" (warning "
+ "message for %s transport): %s", addr->transport->warn_message,
+ addr->transport->drinst.name, expand_string_message);
- else if ((pid = child_open_exim(&fd)) > 0)
- {
- FILE *f = fdopen(fd, "wb");
- if (errors_reply_to && !contains_header(US"Reply-To", warn_message))
- fprintf(f, "Reply-To: %s\n", errors_reply_to);
- fprintf(f, "Auto-Submitted: auto-replied\n");
- if (!contains_header(US"From", warn_message))
- moan_write_from(f);
- fprintf(f, "%s", CS warn_message);
+ else if ((pid = child_open_exim(&fd, US"tpt-warning-message")) > 0)
+ {
+ FILE * f = fdopen(fd, "wb");
+ if (errors_reply_to && !contains_header(US"Reply-To", warn_message))
+ fprintf(f, "Reply-To: %s\n", errors_reply_to);
+ fprintf(f, "Auto-Submitted: auto-replied\n");
+ if (!contains_header(US"From", warn_message))
+ moan_write_from(f);
+ fprintf(f, "%s", CS warn_message);
- /* Close and wait for child process to complete, without a timeout. */
+ /* Close and wait for child process to complete, without a timeout. */
- (void)fclose(f);
- (void)child_close(pid, 0);
- }
+ (void)fclose(f);
+ (void)child_close(pid, 0);
+ }
- addr->special_action = SPECIAL_NONE;
+ addr->special_action = SPECIAL_NONE;
+ }
}
}
static BOOL
tpt_parallel_check(transport_instance * tp, address_item * addr, uschar ** key)
{
+const uschar * trname = tp->drinst.name;
unsigned max_parallel;
+GET_OPTION("max_parallel");
if (!tp->max_parallel) return FALSE;
max_parallel = (unsigned) expand_string_integer(tp->max_parallel, TRUE);
if (expand_string_message)
{
log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand max_parallel option "
- "in %s transport (%s): %s", tp->name, addr->address,
+ "in %s transport (%s): %s", trname, addr->address,
expand_string_message);
return TRUE;
}
if (max_parallel > 0)
{
- uschar * serialize_key = string_sprintf("tpt-serialize-%s", tp->name);
+ uschar * serialize_key = string_sprintf("tpt-serialize-%s", trname);
if (!enq_start(serialize_key, max_parallel))
{
address_item * next;
DEBUG(D_transport)
debug_printf("skipping tpt %s because concurrency limit %u reached\n",
- tp->name, max_parallel);
+ trname, max_parallel);
do
{
next = addr->next;
addr->message = US"concurrency limit reached for transport";
addr->basic_errno = ERRNO_TRETRY;
- post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0);
+ post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0);
} while ((addr = next));
return TRUE;
}
static void
do_local_deliveries(void)
{
-open_db dbblock;
-open_db *dbm_file = NULL;
+open_db dbblock, * dbm_file = NULL;
time_t now = time(NULL);
/* Loop until we have exhausted the supply of local deliveries */
while (addr_local)
{
- time_t delivery_start;
- int deliver_time;
+ struct timeval delivery_start;
+ struct timeval deliver_time;
address_item *addr2, *addr3, *nextaddr;
int logflags = LOG_MAIN;
- int logchar = dont_deliver? '*' : '=';
- transport_instance *tp;
+ int logchar = f.dont_deliver? '*' : '=';
+ transport_instance * tp;
uschar * serialize_key = NULL;
+ const uschar * trname;
/* Pick the first undelivered address off the chain */
if (!(tp = addr->transport))
{
logflags |= LOG_PANIC;
- disable_logging = FALSE; /* Jic */
+ f.disable_logging = FALSE; /* Jic */
addr->message = addr->router
- ? string_sprintf("No transport set by %s router", addr->router->name)
- : string_sprintf("No transport set by system filter");
- post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0);
+ ? string_sprintf("No transport set by %s router", addr->router->drinst.name)
+ : US"No transport set by system filter";
+ post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0);
continue;
}
+ trname = tp->drinst.name;
/* Check that this base address hasn't previously been delivered to this
transport. The check is necessary at this point to handle homonymic addresses
/* There are weird cases where logging is disabled */
- disable_logging = tp->disable_logging;
+ f.disable_logging = tp->disable_logging;
/* Check for batched addresses and possible amalgamation. Skip all the work
if either batch_max <= 1 or there aren't any other addresses for local
/* Expand the batch_id string for comparison with other addresses.
Expansion failure suppresses batching. */
+ GET_OPTION("batch_id");
if (tp->batch_id)
{
deliver_set_expansions(addr);
if (!batch_id)
{
log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
- "in %s transport (%s): %s", tp->name, addr->address,
+ "in %s transport (%s): %s", trname, addr->address,
expand_string_message);
batch_count = tp->batch_max;
}
BOOL ok =
tp == next->transport
&& !previously_transported(next, TRUE)
- && (addr->flags & (af_pfr|af_file)) == (next->flags & (af_pfr|af_file))
+ && testflag(addr, af_pfr) == testflag(next, af_pfr)
+ && testflag(addr, af_file) == testflag(next, af_file)
&& (!uses_lp || Ustrcmp(next->local_part, addr->local_part) == 0)
&& (!uses_dom || Ustrcmp(next->domain, addr->domain) == 0)
&& same_strings(next->prop.errors_address, addr->prop.errors_address)
if (ok && batch_id)
{
- uschar *bid;
- address_item *save_nextnext = next->next;
+ uschar * bid;
+ address_item * save_nextnext = next->next;
next->next = NULL; /* Expansion for a single address */
deliver_set_expansions(next);
next->next = save_nextnext;
+ GET_OPTION("batch_id");
bid = expand_string(tp->batch_id);
deliver_set_expansions(NULL);
if (!bid)
{
log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand batch_id option "
- "in %s transport (%s): %s", tp->name, next->address,
+ "in %s transport (%s): %s", trname, next->address,
expand_string_message);
ok = FALSE;
}
while (addr)
{
addr2 = addr->next;
- post_process_one(addr, rc, logflags, DTYPE_TRANSPORT, 0);
+ post_process_one(addr, rc, logflags, EXIM_DTYPE_TRANSPORT, 0);
addr = addr2;
}
continue; /* With next batch of addresses */
of these checks, rather than for all local deliveries, because some local
deliveries (e.g. to pipes) can take a substantial time. */
- if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE)))
+ if (continue_retry_db && continue_retry_db != (open_db *)-1)
{
+ DEBUG(D_hints_lookup) debug_printf("using cached retry hintsdb handle\n");
+ dbm_file = continue_retry_db;
+ }
+ else if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE, TRUE)))
DEBUG(D_deliver|D_retry|D_hints_lookup)
debug_printf("no retry data available\n");
- }
addr2 = addr;
addr3 = NULL;
while (addr2)
{
BOOL ok = TRUE; /* to deliver this address */
- uschar *retry_key;
-
- /* Set up the retry key to include the domain or not, and change its
- leading character from "R" to "T". Must make a copy before doing this,
- because the old key may be pointed to from a "delete" retry item after
- a routing delay. */
- retry_key = string_copy(
- tp->retry_use_local_part ? addr2->address_retry_key :
- addr2->domain_retry_key);
- *retry_key = 'T';
+ if (f.queue_2stage)
+ {
+ DEBUG(D_deliver)
+ debug_printf_indent("no router retry check (ph1 qrun)\n");
+ }
+ else
+ {
+ /* Set up the retry key to include the domain or not, and change its
+ leading character from "R" to "T". Must make a copy before doing this,
+ because the old key may be pointed to from a "delete" retry item after
+ a routing delay. */
+ uschar * retry_key = string_copy(tp->retry_use_local_part
+ ? addr2->address_retry_key : addr2->domain_retry_key);
+ *retry_key = 'T';
- /* Inspect the retry data. If there is no hints file, delivery happens. */
+ /* Inspect the retry data. If there is no hints file, delivery happens. */
- if (dbm_file)
- {
- dbdata_retry *retry_record = dbfn_read(dbm_file, retry_key);
+ if (dbm_file)
+ {
+ dbdata_retry * retry_record = dbfn_read(dbm_file, retry_key);
- /* If there is no retry record, delivery happens. If there is,
- remember it exists so it can be deleted after a successful delivery. */
+ /* If there is no retry record, delivery happens. If there is,
+ remember it exists so it can be deleted after a successful delivery. */
- if (retry_record)
- {
- setflag(addr2, af_lt_retry_exists);
+ if (retry_record)
+ {
+ setflag(addr2, af_lt_retry_exists);
- /* A retry record exists for this address. If queue running and not
- forcing, inspect its contents. If the record is too old, or if its
- retry time has come, or if it has passed its cutoff time, delivery
- will go ahead. */
+ /* A retry record exists for this address. If queue running and not
+ forcing, inspect its contents. If the record is too old, or if its
+ retry time has come, or if it has passed its cutoff time, delivery
+ will go ahead. */
- DEBUG(D_retry)
- {
- debug_printf("retry record exists: age=%s ",
- readconf_printtime(now - retry_record->time_stamp));
- debug_printf("(max %s)\n", readconf_printtime(retry_data_expire));
- debug_printf(" time to retry = %s expired = %d\n",
- readconf_printtime(retry_record->next_try - now),
- retry_record->expired);
- }
+ DEBUG(D_retry)
+ {
+ debug_printf("retry record exists: age=%s ",
+ readconf_printtime(now - retry_record->time_stamp));
+ debug_printf("(max %s)\n", readconf_printtime(retry_data_expire));
+ debug_printf(" time to retry = %s expired = %d\n",
+ readconf_printtime(retry_record->next_try - now),
+ retry_record->expired);
+ }
- if (queue_running && !deliver_force)
- {
- ok = (now - retry_record->time_stamp > retry_data_expire)
- || (now >= retry_record->next_try)
- || retry_record->expired;
+ if (f.queue_running && !f.deliver_force)
+ {
+ ok = (now - retry_record->time_stamp > retry_data_expire)
+ || (now >= retry_record->next_try)
+ || retry_record->expired;
- /* If we haven't reached the retry time, there is one more check
- to do, which is for the ultimate address timeout. */
+ /* If we haven't reached the retry time, there is one more check
+ to do, which is for the ultimate address timeout. */
- if (!ok)
- ok = retry_ultimate_address_timeout(retry_key, addr2->domain,
- retry_record, now);
- }
- }
- else DEBUG(D_retry) debug_printf("no retry record exists\n");
+ if (!ok)
+ ok = retry_ultimate_address_timeout(retry_key, addr2->domain,
+ retry_record, now);
+ }
+ }
+ else DEBUG(D_retry) debug_printf("no retry record exists\n");
+ }
}
/* This address is to be delivered. Leave it on the chain. */
this->basic_errno = ERRNO_LRETRY;
addr2 = addr3 ? (addr3->next = addr2->next)
: (addr = addr2->next);
- post_process_one(this, DEFER, logflags, DTYPE_TRANSPORT, 0);
+ post_process_one(this, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0);
}
}
- if (dbm_file) dbfn_close(dbm_file);
+ if (dbm_file)
+ if (dbm_file != continue_retry_db)
+ { dbfn_close(dbm_file); dbm_file = NULL; }
+ else
+ DEBUG(D_hints_lookup) debug_printf("retaining retry hintsdb handle\n");
/* If there are no addresses left on the chain, they all deferred. Loop
for the next set of addresses. */
do
{
addr = addr->next;
- post_process_one(addr, DEFER, logflags, DTYPE_TRANSPORT, 0);
+ post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0);
} while ((addr = addr2));
}
continue; /* Loop for the next set of addresses. */
single delivery. */
deliver_set_expansions(addr);
- delivery_start = time(NULL);
+
+ gettimeofday(&delivery_start, NULL);
deliver_local(addr, FALSE);
- deliver_time = (int)(time(NULL) - delivery_start);
+ timesince(&deliver_time, &delivery_start);
/* If a shadow transport (which must perforce be another local transport), is
defined, and its condition is met, we must pass the message to the shadow
if ( tp->shadow
&& ( !tp->shadow_condition
- || expand_check_condition(tp->shadow_condition, tp->name, US"transport")
+ || expand_check_condition(tp->shadow_condition, trname, US"transport")
) )
{
- transport_instance *stp;
- address_item *shadow_addr = NULL;
- address_item **last = &shadow_addr;
+ transport_instance * stp;
+ address_item * shadow_addr = NULL;
+ address_item ** last = &shadow_addr;
- for (stp = transports; stp; stp = stp->next)
- if (Ustrcmp(stp->name, tp->shadow) == 0) break;
+ for (stp = transports; stp; stp = stp->drinst.next)
+ if (Ustrcmp(stp->drinst.name, tp->shadow) == 0) break;
if (!stp)
log_write(0, LOG_MAIN|LOG_PANIC, "shadow transport \"%s\" not found ",
else for (addr2 = addr; addr2; addr2 = addr2->next)
if (addr2->transport_return == OK)
{
- addr3 = store_get(sizeof(address_item));
+ addr3 = store_get(sizeof(address_item), GET_UNTAINTED);
*addr3 = *addr2;
addr3->next = NULL;
- addr3->shadow_message = (uschar *) &(addr2->shadow_message);
+ addr3->shadow_message = US &addr2->shadow_message;
addr3->transport = stp;
addr3->transport_return = DEFER;
addr3->return_filename = NULL;
addr3->return_file = -1;
*last = addr3;
- last = &(addr3->next);
+ last = &addr3->next;
}
/* If we found any addresses to shadow, run the delivery, and stick any
if (shadow_addr)
{
+ const uschar * s_trname = stp->drinst.name;
int save_count = transport_count;
DEBUG(D_deliver|D_transport)
int sresult = shadow_addr->transport_return;
*(uschar **)shadow_addr->shadow_message =
sresult == OK
- ? string_sprintf(" ST=%s", stp->name)
- : string_sprintf(" ST=%s (%s%s%s)", stp->name,
+ ? string_sprintf(" ST=%s", s_trname)
+ : string_sprintf(" ST=%s (%s%s%s)", s_trname,
shadow_addr->basic_errno <= 0
? US""
: US strerror(shadow_addr->basic_errno),
DEBUG(D_deliver|D_transport)
debug_printf("%s shadow transport returned %s for %s\n",
- stp->name,
- sresult == OK ? "OK" :
- sresult == DEFER ? "DEFER" :
- sresult == FAIL ? "FAIL" :
- sresult == PANIC ? "PANIC" : "?",
- shadow_addr->address);
+ s_trname, rc_to_string(sresult), shadow_addr->address);
}
DEBUG(D_deliver|D_transport)
DEBUG(D_deliver|D_transport)
debug_printf("%s transport returned %s for %s\n",
- tp->name,
- result == OK ? "OK" :
- result == DEFER ? "DEFER" :
- result == FAIL ? "FAIL" :
- result == PANIC ? "PANIC" : "?",
- addr2->address);
+ trname, rc_to_string(result), addr2->address);
/* If there is a retry_record, or if delivery is deferred, build a retry
item for setting a new retry time or deleting the old retry record from
if (result == DEFER || testflag(addr2, af_lt_retry_exists))
{
int flags = result == DEFER ? 0 : rf_delete;
- uschar *retry_key = string_copy(tp->retry_use_local_part
+ uschar * retry_key = string_copy(tp->retry_use_local_part
? addr2->address_retry_key : addr2->domain_retry_key);
*retry_key = 'T';
retry_add_item(addr2, retry_key, flags);
/* Done with this address */
- if (result == OK) addr2->more_errno = deliver_time;
- post_process_one(addr2, result, logflags, DTYPE_TRANSPORT, logchar);
+ addr2->delivery_time = deliver_time;
+ post_process_one(addr2, result, logflags, EXIM_DTYPE_TRANSPORT, logchar);
/* If a pipe delivery generated text to be sent back, the result may be
changed to FAIL, and we must copy this for subsequent addresses in the
uschar *pattern;
uschar patbuf[256];
+/*XXX The list is used before expansion. Not sure how that ties up with the docs */
while ( *aptr
&& (pattern = string_nextinlist(&listptr, &sep, patbuf, sizeof(patbuf)))
)
DEBUG(D_deliver)
{
- address_item *addr;
debug_printf("remote addresses after sorting:\n");
- for (addr = addr_remote; addr; addr = addr->next)
+ for (address_item * addr = addr_remote; addr; addr = addr->next)
debug_printf(" %s\n", addr->address);
}
}
often bigger) so even if we are reading while the subprocess is still going, we
should never have only a partial item in the buffer.
+hs12: This assumption is not true anymore, since we get quite large items (certificate
+information and such).
+
Argument:
poffset the offset of the parlist item
eop TRUE if the process has completed
address_item *addr = p->addr;
pid_t pid = p->pid;
int fd = p->fd;
-uschar *endptr = big_buffer;
-uschar *ptr = endptr;
+
uschar *msg = p->msg;
BOOL done = p->done;
-BOOL unfinished = TRUE;
-/* minimum size to read is header size including id, subid and length */
-int required = PIPE_HEADER_SIZE;
-
-/* Loop through all items, reading from the pipe when necessary. The pipe
-is set up to be non-blocking, but there are two different Unix mechanisms in
-use. Exim uses O_NONBLOCK if it is defined. This returns 0 for end of file,
-and EAGAIN for no more data. If O_NONBLOCK is not defined, Exim uses O_NDELAY,
-which returns 0 for both end of file and no more data. We distinguish the
-two cases by taking 0 as end of file only when we know the process has
-completed.
-
-Each separate item is written to the pipe in a single write(), and as they are
-all short items, the writes will all be atomic and we should never find
-ourselves in the position of having read an incomplete item. "Short" in this
-case can mean up to about 1K in the case when there is a long error message
-associated with an address. */
-
-DEBUG(D_deliver) debug_printf("reading pipe for subprocess %d (%s)\n",
- (int)p->pid, eop? "ended" : "not ended");
-
-while (!done)
- {
- retry_item *r, **rp;
- int remaining = endptr - ptr;
- uschar header[PIPE_HEADER_SIZE + 1];
- uschar id, subid;
- uschar *endc;
- /* Read (first time) or top up the chars in the buffer if necessary.
- There will be only one read if we get all the available data (i.e. don't
- fill the buffer completely). */
+continue_hostname = NULL;
+continue_transport = NULL;
- if (remaining < required && unfinished)
- {
- int len;
- int available = big_buffer_size - remaining;
+/* Loop through all items, reading from the pipe when necessary. The pipe
+used to be non-blocking. But I do not see a reason for using non-blocking I/O
+here, as the preceding poll() tells us, if data is available for reading.
- if (remaining > 0) memmove(big_buffer, ptr, remaining);
+A read() on a "selected" handle should never block, but(!) it may return
+less data then we expected. (The buffer size we pass to read() shouldn't be
+understood as a "request", but as a "limit".)
- ptr = big_buffer;
- endptr = big_buffer + remaining;
- len = read(fd, endptr, available);
+Each separate item is written to the pipe in a timely manner. But, especially for
+larger items, the read(2) may already return partial data from the write(2).
- DEBUG(D_deliver) debug_printf("read() yielded %d\n", len);
+The write is atomic mostly (depending on the amount written), but atomic does
+not imply "all or noting", it just is "not intermixed" with other writes on the
+same channel (pipe).
- /* If the result is EAGAIN and the process is not complete, just
- stop reading any more and process what we have already. */
+*/
- if (len < 0)
- {
- if (!eop && errno == EAGAIN) len = 0; else
- {
- msg = string_sprintf("failed to read pipe from transport process "
- "%d for transport %s: %s", pid, addr->transport->driver_name,
- strerror(errno));
- break;
- }
- }
+DEBUG(D_deliver) debug_printf("reading pipe for subprocess %ld (%s)\n",
+ (long)p->pid, eop? "ended" : "not ended yet");
- /* If the length is zero (eof or no-more-data), just process what we
- already have. Note that if the process is still running and we have
- read all the data in the pipe (but less that "available") then we
- won't read any more, as "unfinished" will get set FALSE. */
+while (!done)
+ {
+ retry_item *r, **rp;
+ uschar pipeheader[PIPE_HEADER_SIZE+1];
+ uschar *id = &pipeheader[0];
+ uschar *subid = &pipeheader[1];
+ uschar *ptr = big_buffer;
+ size_t required = PIPE_HEADER_SIZE; /* first the pipehaeder, later the data */
+ ssize_t got;
- endptr += len;
- remaining += len;
- unfinished = len == available;
- }
+ DEBUG(D_deliver)
+ debug_printf("expect %lu bytes (pipeheader) from tpt process %ld\n",
+ (u_long)required, (long)pid);
- /* If we are at the end of the available data, exit the loop. */
- if (ptr >= endptr) break;
+ /* We require(!) all the PIPE_HEADER_SIZE bytes here, as we know,
+ they're written in a timely manner, so waiting for the write shouldn't hurt a lot.
+ If we get less, we can assume the subprocess do be done and do not expect any further
+ information from it. */
- /* copy and read header */
- memcpy(header, ptr, PIPE_HEADER_SIZE);
- header[PIPE_HEADER_SIZE] = '\0';
- id = header[0];
- subid = header[1];
- required = Ustrtol(header + 2, &endc, 10) + PIPE_HEADER_SIZE; /* header + data */
- if (*endc)
+ if ((got = readn(fd, pipeheader, required)) != required)
{
- msg = string_sprintf("failed to read pipe from transport process "
- "%d for transport %s: error reading size from header", pid, addr->transport->driver_name);
+ msg = string_sprintf("got " SSIZE_T_FMT " of %d bytes (pipeheader) "
+ "from transport process %ld for transport %s",
+ got, PIPE_HEADER_SIZE, (long)pid, addr->transport->drinst.driver_name);
done = TRUE;
break;
}
+ pipeheader[PIPE_HEADER_SIZE] = '\0';
DEBUG(D_deliver)
- debug_printf("header read id:%c,subid:%c,size:%s,required:%d,remaining:%d,unfinished:%d\n",
- id, subid, header+2, required, remaining, unfinished);
+ debug_printf("got %ld bytes (pipeheader) '%c' from transport process %ld\n",
+ (long) got, *id, (long)pid);
- /* is there room for the dataset we want to read ? */
- if (required > big_buffer_size - PIPE_HEADER_SIZE)
+ {
+ /* If we can't decode the pipeheader, the subprocess seems to have a
+ problem, we do not expect any furher information from it. */
+ char *endc;
+ required = Ustrtol(pipeheader+2, &endc, 10);
+ if (*endc)
{
- msg = string_sprintf("failed to read pipe from transport process "
- "%d for transport %s: big_buffer too small! required size=%d buffer size=%d", pid, addr->transport->driver_name,
- required, big_buffer_size - PIPE_HEADER_SIZE);
+ msg = string_sprintf("failed to read pipe "
+ "from transport process %ld for transport %s: error decoding size from header",
+ (long)pid, addr ? addr->transport->drinst.driver_name : US"?");
done = TRUE;
break;
}
+ }
- /* we wrote all datasets with atomic write() calls
- remaining < required only happens if big_buffer was too small
- to get all available data from pipe. unfinished has to be true
- as well. */
- if (remaining < required)
+ DEBUG(D_deliver)
+ debug_printf("expect %lu bytes (pipedata) from transport process %ld\n",
+ (u_long)required, (long)pid);
+
+ /* Same as above, the transport process will write the bytes announced
+ in a timely manner, so we can just wait for the bytes, getting less than expected
+ is considered a problem of the subprocess, we do not expect anything else from it. */
+ if ((got = readn(fd, big_buffer, required)) != required)
{
- if (unfinished)
- continue;
- msg = string_sprintf("failed to read pipe from transport process "
- "%d for transport %s: required size=%d > remaining size=%d and unfinished=false",
- pid, addr->transport->driver_name, required, remaining);
+ msg = string_sprintf("got only " SSIZE_T_FMT " of " SIZE_T_FMT
+ " bytes (pipedata) from transport process %ld for transport %s",
+ got, required, (long)pid, addr->transport->drinst.driver_name);
done = TRUE;
break;
}
- /* step behind the header */
- ptr += PIPE_HEADER_SIZE;
-
/* Handle each possible type of item, assuming the complete item is
available in store. */
- switch (id)
+ switch (*id)
{
/* Host items exist only if any hosts were marked unusable. Match
up by checking the IP address. */
case 'H':
- for (h = addrlist->host_list; h; h = h->next)
- {
- if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue;
- h->status = ptr[0];
- h->why = ptr[1];
- }
- ptr += 2;
- while (*ptr++);
- break;
+ for (h = addrlist->host_list; h; h = h->next)
+ {
+ if (!h->address || Ustrcmp(h->address, ptr+2) != 0) continue;
+ h->status = ptr[0];
+ h->why = ptr[1];
+ }
+ ptr += 2;
+ while (*ptr++);
+ break;
/* Retry items are sent in a preceding R item for each address. This is
kept separate to keep each message short enough to guarantee it won't
that a "delete" item is dropped in favour of an "add" item. */
case 'R':
- if (!addr) goto ADDR_MISMATCH;
+ if (!addr) goto ADDR_MISMATCH;
- DEBUG(D_deliver|D_retry)
- debug_printf("reading retry information for %s from subprocess\n",
- ptr+1);
+ DEBUG(D_deliver|D_retry)
+ debug_printf("reading retry information for %s from subprocess\n",
+ ptr+1);
- /* Cut out any "delete" items on the list. */
+ /* Cut out any "delete" items on the list. */
- for (rp = &(addr->retries); (r = *rp); rp = &r->next)
- if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */
- {
- if ((r->flags & rf_delete) == 0) break; /* It was not "delete" */
- *rp = r->next; /* Excise a delete item */
- DEBUG(D_deliver|D_retry)
- debug_printf(" existing delete item dropped\n");
- }
+ for (rp = &addr->retries; (r = *rp); rp = &r->next)
+ if (Ustrcmp(r->key, ptr+1) == 0) /* Found item with same key */
+ {
+ if (!(r->flags & rf_delete)) break; /* It was not "delete" */
+ *rp = r->next; /* Excise a delete item */
+ DEBUG(D_deliver|D_retry)
+ debug_printf(" existing delete item dropped\n");
+ }
- /* We want to add a delete item only if there is no non-delete item;
- however we still have to step ptr through the data. */
+ /* We want to add a delete item only if there is no non-delete item;
+ however we still have to step ptr through the data. */
- if (!r || (*ptr & rf_delete) == 0)
- {
- r = store_get(sizeof(retry_item));
- r->next = addr->retries;
- addr->retries = r;
- r->flags = *ptr++;
- r->key = string_copy(ptr);
- while (*ptr++);
- memcpy(&(r->basic_errno), ptr, sizeof(r->basic_errno));
- ptr += sizeof(r->basic_errno);
- memcpy(&(r->more_errno), ptr, sizeof(r->more_errno));
- ptr += sizeof(r->more_errno);
- r->message = (*ptr)? string_copy(ptr) : NULL;
- DEBUG(D_deliver|D_retry)
- debug_printf(" added %s item\n",
- ((r->flags & rf_delete) == 0)? "retry" : "delete");
- }
+ if (!r || !(*ptr & rf_delete))
+ {
+ r = store_get(sizeof(retry_item), GET_UNTAINTED);
+ r->next = addr->retries;
+ addr->retries = r;
+ r->flags = *ptr++;
+ r->key = string_copy(ptr);
+ while (*ptr++);
+ memcpy(&r->basic_errno, ptr, sizeof(r->basic_errno));
+ ptr += sizeof(r->basic_errno);
+ memcpy(&r->more_errno, ptr, sizeof(r->more_errno));
+ ptr += sizeof(r->more_errno);
+ r->message = *ptr ? string_copy(ptr) : NULL;
+ DEBUG(D_deliver|D_retry) debug_printf(" added %s item\n",
+ r->flags & rf_delete ? "delete" : "retry");
+ }
- else
- {
- DEBUG(D_deliver|D_retry)
- debug_printf(" delete item not added: non-delete item exists\n");
- ptr++;
- while(*ptr++);
- ptr += sizeof(r->basic_errno) + sizeof(r->more_errno);
- }
+ else
+ {
+ DEBUG(D_deliver|D_retry)
+ debug_printf(" delete item not added: non-delete item exists\n");
+ ptr++;
+ while(*ptr++);
+ ptr += sizeof(r->basic_errno) + sizeof(r->more_errno);
+ }
- while(*ptr++);
- break;
+ while(*ptr++);
+ break;
/* Put the amount of data written into the parlist block */
- case 'S':
- memcpy(&(p->transport_count), ptr, sizeof(transport_count));
- ptr += sizeof(transport_count);
- break;
+ case 'S': /* Size */
+ memcpy(&(p->transport_count), ptr, sizeof(transport_count));
+ ptr += sizeof(transport_count);
+ break;
/* Address items are in the order of items on the address chain. We
remember the current address value in case this function is called
it in with the other info, in order to keep each message short enough to
guarantee it won't be split in the pipe. */
-#ifdef SUPPORT_TLS
- case 'X':
- if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */
- switch (subid)
- {
- case '1':
- addr->cipher = NULL;
- addr->peerdn = NULL;
-
- if (*ptr)
- addr->cipher = string_copy(ptr);
- while (*ptr++);
- if (*ptr)
- addr->peerdn = string_copy(ptr);
- break;
-
- case '2':
- if (*ptr)
- (void) tls_import_cert(ptr, &addr->peercert);
- else
- addr->peercert = NULL;
- break;
+#ifndef DISABLE_TLS
+ case 'X': /* TLS details */
+ if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */
+ switch (*subid)
+ {
+ case '1':
+ addr->tlsver = addr->cipher = addr->peerdn = NULL;
- case '3':
- if (*ptr)
- (void) tls_import_cert(ptr, &addr->ourcert);
- else
- addr->ourcert = NULL;
- break;
+ if (*ptr)
+ {
+ addr->cipher = string_copy(ptr);
+ addr->tlsver = string_copyn(ptr, Ustrchr(ptr, ':') - ptr);
+ }
+ while (*ptr++);
+ if (*ptr)
+ addr->peerdn = string_copy(ptr);
+ break;
+
+ case '2':
+ if (*ptr)
+ (void) tls_import_cert(ptr, &addr->peercert);
+ else
+ addr->peercert = NULL;
+ break;
+
+ case '3':
+ if (*ptr)
+ (void) tls_import_cert(ptr, &addr->ourcert);
+ else
+ addr->ourcert = NULL;
+ break;
# ifndef DISABLE_OCSP
- case '4':
- addr->ocsp = OCSP_NOT_REQ;
- if (*ptr)
- addr->ocsp = *ptr - '0';
- break;
+ case '4':
+ addr->ocsp = *ptr ? *ptr - '0' : OCSP_NOT_REQ;
+ break;
# endif
- }
- while (*ptr++);
- break;
-#endif /*SUPPORT_TLS*/
+ }
+ while (*ptr++);
+ break;
+#endif /*DISABLE_TLS*/
case 'C': /* client authenticator information */
- switch (subid)
- {
- case '1':
- addr->authenticator = (*ptr)? string_copy(ptr) : NULL;
- break;
- case '2':
- addr->auth_id = (*ptr)? string_copy(ptr) : NULL;
- break;
- case '3':
- addr->auth_sndr = (*ptr)? string_copy(ptr) : NULL;
- break;
- }
- while (*ptr++);
- break;
+ switch (*subid)
+ {
+ case '1': addr->authenticator = *ptr ? string_copy(ptr) : NULL; break;
+ case '2': addr->auth_id = *ptr ? string_copy(ptr) : NULL; break;
+ case '3': addr->auth_sndr = *ptr ? string_copy(ptr) : NULL; break;
+ }
+ while (*ptr++);
+ break;
#ifndef DISABLE_PRDR
case 'P':
- addr->flags |= af_prdr_used;
- break;
+ setflag(addr, af_prdr_used);
+ break;
#endif
- case 'K':
- addr->flags |= af_chunking_used;
- break;
+ case 'L':
+ switch (*subid)
+ {
+#ifndef DISABLE_PIPE_CONNECT
+ case 2: setflag(addr, af_early_pipe); /*FALLTHROUGH*/
+#endif
+ case 1: setflag(addr, af_pipelining); break;
+ }
+ break;
- case 'D':
- if (!addr) goto ADDR_MISMATCH;
- memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware));
- ptr += sizeof(addr->dsn_aware);
- DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware);
- break;
+ case 'K':
+ setflag(addr, af_chunking_used);
+ break;
- case 'A':
- if (!addr)
- {
- ADDR_MISMATCH:
- msg = string_sprintf("address count mismatch for data read from pipe "
- "for transport process %d for transport %s", pid,
- addrlist->transport->driver_name);
- done = TRUE;
+ case 'T':
+ setflag(addr, af_tcp_fastopen_conn);
+ if (*subid > '0') setflag(addr, af_tcp_fastopen);
+ if (*subid > '1') setflag(addr, af_tcp_fastopen_data);
break;
- }
- switch (subid)
- {
-#ifdef SUPPORT_SOCKS
- case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/
- proxy_session = TRUE; /*XXX shouod this be cleared somewhere? */
- if (*ptr == 0)
- ptr++;
- else
- {
- proxy_local_address = string_copy(ptr);
- while(*ptr++);
- memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port));
- ptr += sizeof(proxy_local_port);
- }
+ case 'D': /* DSN */
+ if (!addr) goto ADDR_MISMATCH;
+ memcpy(&(addr->dsn_aware), ptr, sizeof(addr->dsn_aware));
+ ptr += sizeof(addr->dsn_aware);
+ DEBUG(D_deliver) debug_printf("DSN read: addr->dsn_aware = %d\n", addr->dsn_aware);
+ break;
+
+ case 'A': /* Per-address info */
+ if (!addr)
+ {
+ ADDR_MISMATCH:
+ msg = string_sprintf("address count mismatch for data read from pipe "
+ "for transport process %ld for transport %s",
+ (long)pid, addrlist->transport->drinst.driver_name);
+ done = TRUE;
break;
+ }
+
+ switch (*subid)
+ {
+#ifndef DISABLE_DKIM
+ case '4': /* DKIM information */
+ addr->dkim_used = string_copy(ptr);
+ while(*ptr++);
+ break;
+#endif
+
+ case '3': /* explicit notification of continued-connection (non)use;
+ overrides caller's knowlege. */
+ if (*ptr & BIT(1)) setflag(addr, af_new_conn);
+ else if (*ptr & BIT(2)) setflag(addr, af_cont_conn);
+ break;
+
+#ifdef SUPPORT_SOCKS
+ case '2': /* proxy information; must arrive before A0 and applies to that addr XXX oops*/
+ proxy_session = TRUE; /*XXX should this be cleared somewhere? */
+ if (*ptr == 0)
+ ptr++;
+ else
+ {
+ proxy_local_address = string_copy(ptr);
+ while(*ptr++);
+ memcpy(&proxy_local_port, ptr, sizeof(proxy_local_port));
+ ptr += sizeof(proxy_local_port);
+ }
+ break;
#endif
#ifdef EXPERIMENTAL_DSN_INFO
- case '1': /* must arrive before A0, and applies to that addr */
- /* Two strings: smtp_greeting and helo_response */
- addr->smtp_greeting = string_copy(ptr);
- while(*ptr++);
- addr->helo_response = string_copy(ptr);
- while(*ptr++);
- break;
+ case '1': /* must arrive before A0, and applies to that addr */
+ /* Two strings: smtp_greeting and helo_response */
+ addr->smtp_greeting = string_copy(ptr);
+ while(*ptr++);
+ addr->helo_response = string_copy(ptr);
+ while(*ptr++);
+ break;
#endif
- case '0':
- addr->transport_return = *ptr++;
- addr->special_action = *ptr++;
- memcpy(&(addr->basic_errno), ptr, sizeof(addr->basic_errno));
- ptr += sizeof(addr->basic_errno);
- memcpy(&(addr->more_errno), ptr, sizeof(addr->more_errno));
- ptr += sizeof(addr->more_errno);
- memcpy(&(addr->flags), ptr, sizeof(addr->flags));
- ptr += sizeof(addr->flags);
- addr->message = (*ptr)? string_copy(ptr) : NULL;
- while(*ptr++);
- addr->user_message = (*ptr)? string_copy(ptr) : NULL;
- while(*ptr++);
+ case '0': /* results of trying to send to this address */
+ DEBUG(D_deliver) debug_printf("A0 %s tret %d\n", addr->address, *ptr);
+ addr->transport_return = *ptr++;
+ addr->special_action = *ptr++;
+ memcpy(&addr->basic_errno, ptr, sizeof(addr->basic_errno));
+ ptr += sizeof(addr->basic_errno);
+ memcpy(&addr->more_errno, ptr, sizeof(addr->more_errno));
+ ptr += sizeof(addr->more_errno);
+ memcpy(&addr->delivery_time, ptr, sizeof(addr->delivery_time));
+ ptr += sizeof(addr->delivery_time);
+ memcpy(&addr->flags, ptr, sizeof(addr->flags));
+ ptr += sizeof(addr->flags);
+ addr->message = *ptr ? string_copy(ptr) : NULL;
+ while(*ptr++);
+ addr->user_message = *ptr ? string_copy(ptr) : NULL;
+ while(*ptr++);
- /* Always two strings for host information, followed by the port number and DNSSEC mark */
+ /* Always two strings for host information, followed by the port number and DNSSEC mark */
- if (*ptr != 0)
- {
- h = store_get(sizeof(host_item));
- h->name = string_copy(ptr);
- while (*ptr++);
- h->address = string_copy(ptr);
- while(*ptr++);
- memcpy(&(h->port), ptr, sizeof(h->port));
- ptr += sizeof(h->port);
- h->dnssec = *ptr == '2' ? DS_YES
- : *ptr == '1' ? DS_NO
- : DS_UNK;
+ if (*ptr)
+ {
+ h = store_get(sizeof(host_item), GET_UNTAINTED);
+ h->name = string_copy(ptr);
+ while (*ptr++);
+ h->address = string_copy(ptr);
+ while(*ptr++);
+ memcpy(&h->port, ptr, sizeof(h->port));
+ ptr += sizeof(h->port);
+ h->dnssec = *ptr == '2' ? DS_YES
+ : *ptr == '1' ? DS_NO
+ : DS_UNK;
+ addr->host_used = h;
+ }
ptr++;
- addr->host_used = h;
- }
- else ptr++;
- /* Finished with this address */
+ continue_flags = 0;
+#ifndef DISABLE_TLS
+ if (testflag(addr, af_cert_verified)) continue_flags |= CTF_CV;
+# ifdef SUPPORT_DANE
+ if (testflag(addr, af_dane_verified)) continue_flags |= CTF_DV;
+# endif
+# ifndef DISABLE_TLS_RESUME
+ if (testflag(addr, af_tls_resume)) continue_flags |= CTF_TR;
+# endif
+#endif
+ /* Finished with this address */
- addr = addr->next;
- break;
- }
- break;
+ addr = addr->next;
+ break;
+ }
+ break;
/* Local interface address/port */
case 'I':
- if (*ptr) sending_ip_address = string_copy(ptr);
- while (*ptr++) ;
- if (*ptr) sending_port = atoi(CS ptr);
- while (*ptr++) ;
- break;
+ if (*ptr) sending_ip_address = string_copy(ptr);
+ while (*ptr++) ;
+ if (*ptr) sending_port = atoi(CS ptr);
+ while (*ptr++) ;
+ break;
- /* Z marks the logical end of the data. It is followed by '0' if
+ /* Z0 marks the logical end of the data. It is followed by '0' if
continue_transport was NULL at the end of transporting, otherwise '1'.
- We need to know when it becomes NULL during a delivery down a passed SMTP
- channel so that we don't try to pass anything more down it. Of course, for
- most normal messages it will remain NULL all the time. */
+ Those are now for historical reasons only; we always clear the continued
+ channel info, and then set it explicitly if the transport indicates it
+ is still open, because it could differ for each transport we are running in
+ parallel.
+
+ Z1 is a suggested message_id to handle next, used during a
+ continued-transport sequence. */
case 'Z':
- if (*ptr == '0')
- {
- continue_transport = NULL;
- continue_hostname = NULL;
- }
- done = TRUE;
- DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr);
- break;
+ switch (*subid)
+ {
+ case '0': /* End marker */
+ done = TRUE;
+ DEBUG(D_deliver) debug_printf("Z0%c item read\n", *ptr);
+ break;
+ case '1': /* Suggested continuation message */
+ Ustrncpy(continue_next_id, ptr, MESSAGE_ID_LENGTH);
+ continue_sequence = atoi(CS ptr + MESSAGE_ID_LENGTH + 1);
+ DEBUG(D_deliver) debug_printf("continue_next_id: %s seq %d\n",
+ continue_next_id, continue_sequence);
+ break;
+ case '2': /* Continued transport, host & addr */
+ {
+ int recvd_fd;
+
+ DEBUG(D_any) if (Ustrcmp(process_purpose, "continued-delivery") != 0)
+ debug_printf("%s becomes continued-delivery\n", process_purpose);
+ process_purpose = US"continued-delivery";
+ continue_transport = string_copy(ptr); while (*ptr++) ;
+ continue_hostname = string_copy(ptr); while (*ptr++) ;
+ continue_host_address = string_copy(ptr); while (*ptr++) ;
+ continue_sequence = atoi(CS ptr);
+
+ dup2((recvd_fd = recv_fd_from_sock(fd)), 0);
+ close(recvd_fd);
+
+ DEBUG(D_deliver)
+ debug_printf("continue: fd %d tpt %s host '%s' addr '%s' seq %d\n",
+ recvd_fd, continue_transport, continue_hostname,
+ continue_host_address, continue_sequence);
+ break;
+ }
+ case '3': /* Continued conn info */
+ smtp_peer_options = ptr[0];
+ f.smtp_authenticated = ptr[1] & 1;
+ break;
+#ifndef DISABLE_TLS
+ case '4': /* Continued TLS info */
+ continue_proxy_cipher = string_copy(ptr);
+ break;
+ case '5': /* Continued DANE info */
+ case '6': /* Continued TLS info */
+# ifdef SUPPORT_DANE
+ continue_proxy_dane = *subid == '5';
+# endif
+ continue_proxy_sni = *ptr ? string_copy(ptr) : NULL;
+ break;
+#endif
+#ifndef DISABLE_ESMTP_LIMITS
+ case '7': /* Continued peer limits */
+ sscanf(CS ptr, "%u %u %u",
+ &continue_limit_mail, &continue_limit_rcpt,
+ &continue_limit_rcptdom);
+ break;
+#endif
+#ifdef SUPPORT_SOCKS
+ case '8': /* Continued proxy info */
+ proxy_local_address = string_copy(ptr); while (*ptr++) ;
+ proxy_local_port = atoi(CS ptr); while (*ptr++) ;
+ proxy_external_address = string_copy(ptr); while (*ptr++) ;
+ proxy_external_port = atoi(CS ptr);
+ break;
+#endif
+ }
+ break;
/* Anything else is a disaster. */
default:
- msg = string_sprintf("malformed data (%d) read from pipe for transport "
- "process %d for transport %s", ptr[-1], pid,
- addr->transport->driver_name);
- done = TRUE;
- break;
+ msg = string_sprintf("malformed data (%d) read from pipe for transport "
+ "process %ld for transport %s", ptr[-1], (long)pid,
+ addr ? addr->transport->drinst.driver_name : US"?");
+ done = TRUE;
+ break;
}
}
p->done = done;
/* If the process hadn't finished, and we haven't seen the end of the data
-or suffered a disaster, update the rest of the state, and return FALSE to
+or if we suffered a disaster, update the rest of the state, and return FALSE to
indicate "not finished". */
if (!eop && !done)
if (!msg && addr)
msg = string_sprintf("insufficient address data read from pipe "
- "for transport process %d for transport %s", pid,
- addr->transport->driver_name);
+ "for transport process %ld for transport %s", (long)pid,
+ addr->transport->drinst.driver_name);
/* If an error message is set, something has gone wrong in getting back
the delivery data. Put the message into each address and freeze it. */
addr->transport_return = DEFER;
addr->special_action = SPECIAL_FREEZE;
addr->message = msg;
+ log_write(0, LOG_MAIN|LOG_PANIC, "Delivery status for %s: %s\n",
+ addr->address, addr->message);
}
/* Return TRUE to indicate we have got all we need from this process, even
*/
static void
-remote_post_process(address_item *addr, int logflags, uschar *msg,
+remote_post_process(address_item * addr, int logflags, uschar * msg,
BOOL fallback)
{
-host_item *h;
-
/* If any host addresses were found to be unusable, add them to the unusable
tree so that subsequent deliveries don't try them. */
-for (h = addr->host_list; h; h = h->next)
+for (host_item * h = addr->host_list; h; h = h->next)
if (h->address)
if (h->status >= hstatus_unusable) tree_add_unusable(h);
while (addr)
{
- address_item *next = addr->next;
+ address_item * next = addr->next;
/* If msg == NULL (normal processing) and the result is DEFER and we are
processing the main hosts and there are fallback hosts available, put the
addr->transport_return = DEFER;
}
(void)post_process_one(addr, addr->transport_return, logflags,
- DTYPE_TRANSPORT, addr->special_action);
+ EXIM_DTYPE_TRANSPORT, addr->special_action);
}
/* Next address */
par_wait(void)
{
int poffset, status;
-address_item *addr, *addrlist;
+address_item * addr, * addrlist;
pid_t pid;
set_process_info("delivering %s: waiting for a remote delivery subprocess "
existence - in which case give an error return. We cannot proceed just by
waiting for a completion, because a subprocess may have filled up its pipe, and
be waiting for it to be emptied. Therefore, if no processes have finished, we
-wait for one of the pipes to acquire some data by calling select(), with a
+wait for one of the pipes to acquire some data by calling poll(), with a
timeout just in case.
The simple approach is just to iterate after reading data from a ready pipe.
This leads to non-ideal behaviour when the subprocess has written its final Z
item, closed the pipe, and is in the process of exiting (the common case). A
-call to waitpid() yields nothing completed, but select() shows the pipe ready -
+call to waitpid() yields nothing completed, but poll() shows the pipe ready -
reading it yields EOF, so you end up with busy-waiting until the subprocess has
actually finished.
To avoid this, if all the data that is needed has been read from a subprocess
-after select(), an explicit wait() for it is done. We know that all it is doing
+after poll(), an explicit wait() for it is done. We know that all it is doing
is writing to the pipe and then exiting, so the wait should not be long.
The non-blocking waitpid() is to some extent just insurance; if we could
{
while ((pid = waitpid(-1, &status, WNOHANG)) <= 0)
{
- struct timeval tv;
- fd_set select_pipes;
- int maxpipe, readycount;
+ int readycount;
/* A return value of -1 can mean several things. If errno != ECHILD, it
either means invalid options (which we discount), or that this process was
subprocesses are still in existence. If kill() gives an OK return, we know
it must be for one of our processes - it can't be for a re-use of the pid,
because if our process had finished, waitpid() would have found it. If any
- of our subprocesses are in existence, we proceed to use select() as if
+ of our subprocesses are in existence, we proceed to use poll() as if
waitpid() had returned zero. I think this is safe. */
if (pid < 0)
{
if ((pid = parlist[poffset].pid) != 0 && kill(pid, 0) == 0)
{
- DEBUG(D_deliver) debug_printf("process %d still exists: assume "
- "stolen by strace\n", (int)pid);
+ DEBUG(D_deliver) debug_printf("process %ld still exists: assume "
+ "stolen by strace\n", (long)pid);
break; /* With poffset set */
}
}
if (poffset >= remote_max_parallel)
{
DEBUG(D_deliver) debug_printf("*** no delivery children found\n");
- return NULL; /* This is the error return */
+ return NULL; /* This is the error return */
}
}
subprocess, but there are no completed subprocesses. See if any pipes are
ready with any data for reading. */
- DEBUG(D_deliver) debug_printf("selecting on subprocess pipes\n");
+ DEBUG(D_deliver) debug_printf("polling subprocess pipes\n");
- maxpipe = 0;
- FD_ZERO(&select_pipes);
for (poffset = 0; poffset < remote_max_parallel; poffset++)
- {
if (parlist[poffset].pid != 0)
- {
- int fd = parlist[poffset].fd;
- FD_SET(fd, &select_pipes);
- if (fd > maxpipe) maxpipe = fd;
- }
- }
+ {
+ parpoll[poffset].fd = parlist[poffset].fd;
+ parpoll[poffset].events = POLLIN;
+ }
+ else
+ parpoll[poffset].fd = -1;
/* Stick in a 60-second timeout, just in case. */
- tv.tv_sec = 60;
- tv.tv_usec = 0;
-
- readycount = select(maxpipe + 1, (SELECT_ARG2_TYPE *)&select_pipes,
- NULL, NULL, &tv);
+ readycount = poll(parpoll, remote_max_parallel, 60 * 1000);
/* Scan through the pipes and read any that are ready; use the count
- returned by select() to stop when there are no more. Select() can return
+ returned by poll() to stop when there are no more. Select() can return
with no processes (e.g. if interrupted). This shouldn't matter.
If par_read_pipe() returns TRUE, it means that either the terminating Z was
poffset++)
{
if ( (pid = parlist[poffset].pid) != 0
- && FD_ISSET(parlist[poffset].fd, &select_pipes)
+ && parpoll[poffset].revents
)
{
readycount--;
if (par_read_pipe(poffset, FALSE)) /* Finished with this pipe */
- {
for (;;) /* Loop for signals */
{
pid_t endedpid = waitpid(pid, &status, 0);
if (endedpid == pid) goto PROCESS_DONE;
if (endedpid != (pid_t)(-1) || errno != EINTR)
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Unexpected error return "
- "%d (errno = %d) from waitpid() for process %d",
- (int)endedpid, errno, (int)pid);
+ "%d (errno = %d) from waitpid() for process %ld",
+ (int)endedpid, errno, (long)pid);
}
- }
}
}
/* This situation is an error, but it's probably better to carry on looking
for another process than to give up (as we used to do). */
- log_write(0, LOG_MAIN|LOG_PANIC, "Process %d finished: not found in remote "
- "transport process list", pid);
+ log_write(0, LOG_MAIN|LOG_PANIC, "Process %ld finished: not found in remote "
+ "transport process list", (long)pid);
} /* End of the "for" loop */
-/* Come here when all the data was completely read after a select(), and
+/* Come here when all the data was completely read after a poll(), and
the process in pid has been wait()ed for. */
PROCESS_DONE:
DEBUG(D_deliver)
{
if (status == 0)
- debug_printf("remote delivery process %d ended\n", (int)pid);
+ debug_printf("remote delivery process %ld ended\n", (long)pid);
else
- debug_printf("remote delivery process %d ended: status=%04x\n", (int)pid,
+ debug_printf("remote delivery process %ld ended: status=%04x\n", (long)pid,
status);
}
msg = string_sprintf("%s transport process returned non-zero status 0x%04x: "
"%s %d",
- addrlist->transport->driver_name,
+ addrlist->transport->drinst.driver_name,
status,
- (msb == 0)? "terminated by signal" : "exit code",
+ msb == 0 ? "terminated by signal" : "exit code",
code);
if (msb != 0 || (code != SIGTERM && code != SIGKILL && code != SIGQUIT))
/* Else complete reading the pipe to get the result of the delivery, if all
the data has not yet been obtained. */
-else if (!parlist[poffset].done) (void)par_read_pipe(poffset, TRUE);
+else if (!parlist[poffset].done)
+ (void) par_read_pipe(poffset, TRUE);
/* Put the data count and return path into globals, mark the data slot unused,
decrement the count of subprocesses, and return the address chain. */
{
while (parcount > max)
{
- address_item *doneaddr = par_wait();
+ address_item * doneaddr = par_wait();
if (!doneaddr)
{
log_write(0, LOG_MAIN|LOG_PANIC,
{
transport_instance * tp = doneaddr->transport;
if (tp->max_parallel)
- enq_end(string_sprintf("tpt-serialize-%s", tp->name));
+ enq_end(string_sprintf("tpt-serialize-%s", tp->drinst.name));
remote_post_process(doneaddr, LOG_MAIN, NULL, fallback);
}
}
}
-
-
-
static void
-rmt_dlv_checked_write(int fd, char id, char subid, void * buf, int size)
+rmt_dlv_checked_write(int fd, char id, char subid, void * buf, ssize_t size)
{
-uschar writebuffer[PIPE_HEADER_SIZE + BIG_BUFFER_SIZE];
-int header_length;
-int ret;
+uschar pipe_header[PIPE_HEADER_SIZE+1];
+size_t total_len = PIPE_HEADER_SIZE + size;
+
+struct iovec iov[2] = {
+ { pipe_header, PIPE_HEADER_SIZE }, /* indication about the data to expect */
+ { buf, size } /* *the* data */
+};
+
+ssize_t ret;
/* we assume that size can't get larger then BIG_BUFFER_SIZE which currently is set to 16k */
/* complain to log if someone tries with buffer sizes we can't handle*/
-if (size > 99999)
+if (size > BIG_BUFFER_SIZE-1)
{
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
- "Failed writing transport result to pipe: can't handle buffers > 99999 bytes. truncating!\n");
- size = 99999;
+ "Failed writing transport result to pipe: can't handle buffers > %d bytes. truncating!\n",
+ BIG_BUFFER_SIZE-1);
+ size = BIG_BUFFER_SIZE;
}
-/* to keep the write() atomic we build header in writebuffer and copy buf behind */
-/* two write() calls would increase the complexity of reading from pipe */
+/* Should we check that we do not write more than PIPE_BUF? What would
+that help? */
/* convert size to human readable string prepended by id and subid */
-header_length = snprintf(CS writebuffer, PIPE_HEADER_SIZE+1, "%c%c%05d", id, subid, size);
-if (header_length != PIPE_HEADER_SIZE)
- {
+if (PIPE_HEADER_SIZE != snprintf(CS pipe_header, PIPE_HEADER_SIZE+1, "%c%c%05ld",
+ id, subid, (long)size))
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "header snprintf failed\n");
- writebuffer[0] = '\0';
- }
-DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%d,final:%s\n",
- id, subid, size, writebuffer);
+DEBUG(D_deliver) debug_printf("header write id:%c,subid:%c,size:%ld,final:%s\n",
+ id, subid, (long)size, pipe_header);
-if (buf && size > 0)
- memcpy(writebuffer + PIPE_HEADER_SIZE, buf, size);
-
-size += PIPE_HEADER_SIZE;
-if ((ret = write(fd, writebuffer, size)) != size)
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed writing transport result to pipe: %s\n",
- ret == -1 ? strerror(errno) : "short write");
+if ((ret = writev(fd, iov, 2)) != total_len)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE,
+ "Failed writing transport result to pipe (%ld of %ld bytes): %s",
+ (long)ret, (long)total_len, ret == -1 ? strerror(errno) : "short write");
}
/*************************************************
do_remote_deliveries(BOOL fallback)
{
int parmax;
-int delivery_count;
int poffset;
parcount = 0; /* Number of executing subprocesses */
if (!parlist)
{
- parlist = store_get(remote_max_parallel * sizeof(pardata));
+ parlist = store_get(remote_max_parallel * sizeof(pardata), GET_UNTAINTED);
for (poffset = 0; poffset < remote_max_parallel; poffset++)
parlist[poffset].pid = 0;
+ parpoll = store_get(remote_max_parallel * sizeof(struct pollfd), GET_UNTAINTED);
}
/* Now loop for each remote delivery */
-for (delivery_count = 0; addr_remote; delivery_count++)
+for (int delivery_count = 0; addr_remote; delivery_count++)
{
pid_t pid;
uid_t uid;
if (!(tp = addr->transport))
{
- disable_logging = FALSE; /* Jic */
+ f.disable_logging = FALSE; /* Jic */
panicmsg = US"No transport set by router";
goto panic_continue;
}
}
}
+/*XXX need to defeat this when DANE is used - but we don't know that yet.
+So look out for the place it gets used.
+*/
+
/* Get the flag which specifies whether the transport can handle different
domains that nevertheless resolve to the same set of hosts. If it needs
expanding, get variables set: $address_data, $domain_data, $localpart_data,
if (tp->expand_multi_domain)
deliver_set_expansions(addr);
- if (exp_bool(addr, US"transport", tp->name, D_transport,
+ if (exp_bool(addr, US"transport", tp->drinst.name, D_transport,
US"multi_domain", tp->multi_domain, tp->expand_multi_domain,
&multi_domain) != OK)
{
}
/* Get the maximum it can handle in one envelope, with zero meaning
- unlimited, which is forced for the MUA wrapper case. */
+ unlimited, which is forced for the MUA wrapper case and if the
+ value could vary depending on the messages.
+ For those, we only split (below) by (tpt,dest,erraddr,hdrs) and rely on the
+ transport splitting further by max_rcp. So we potentially lose some
+ parallellism. */
- address_count_max = tp->max_addresses;
- if (address_count_max == 0 || mua_wrapper) address_count_max = 999999;
+ GET_OPTION("max_rcpt");
+ address_count_max = mua_wrapper || Ustrchr(tp->max_addresses, '$')
+ ? UNLIMITED_ADDRS : expand_max_rcpt(tp->max_addresses);
/************************************************************************/
&& address_count_max < remote_delivery_count/remote_max_parallel
)
{
- int new_max = remote_delivery_count/remote_max_parallel;
- int message_max = tp->connection_max_messages;
+ int new_max = remote_delivery_count/remote_max_parallel, message_max;
+ GET_OPTION("connection_max_messages");
+ message_max = tp->connection_max_messages;
if (connection_max_messages >= 0) message_max = connection_max_messages;
message_max -= continue_sequence - 1;
if (message_max > 0 && new_max > address_count_max * message_max)
/************************************************************************/
+/*XXX don't know yet if DANE will be used. So tpt will have to
+check at the point if gets next addr from list, and skip/defer any
+nonmatch domains
+*/
+
/* Pick off all addresses which have the same transport, errors address,
destination, and extra headers. In some cases they point to the same host
list, but we also need to check for identical host lists generated from
) )
&& ( !multi_domain
|| ( (
- !tp->expand_multi_domain || (deliver_set_expansions(next), 1),
+ (void)(!tp->expand_multi_domain || ((void)deliver_set_expansions(next), 1)),
exp_bool(addr,
- US"transport", next->transport->name, D_transport,
+ US"transport", next->transport->drinst.name, D_transport,
US"multi_domain", next->transport->multi_domain,
next->transport->expand_multi_domain, &md) == OK
)
/* Compute the return path, expanding a new one if required. The old one
must be set first, as it might be referred to in the expansion. */
- if(addr->prop.errors_address)
- return_path = addr->prop.errors_address;
-#ifdef EXPERIMENTAL_SRS
- else if(addr->prop.srs_sender)
- return_path = addr->prop.srs_sender;
-#endif
- else
- return_path = sender_address;
+ return_path = addr->prop.errors_address
+ ? addr->prop.errors_address : sender_address;
+ GET_OPTION("return_path");
if (tp->return_path)
{
- uschar *new_return_path = expand_string(tp->return_path);
+ uschar * new_return_path = expand_string(tp->return_path);
if (new_return_path)
return_path = new_return_path;
- else if (!expand_string_forcedfail)
+ else if (!f.expand_string_forcedfail)
{
panicmsg = string_sprintf("Failed to expand return path \"%s\": %s",
tp->return_path, expand_string_message);
if (tp->setup)
(void)((tp->setup)(addr->transport, addr, NULL, uid, gid, NULL));
+ /* If we have a connection still open from a verify stage (lazy-close)
+ treat it as if it is a continued connection (apart from the counter used
+ for the log line mark). */
+
+ if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only)
+ {
+ DEBUG(D_deliver)
+ debug_printf("lazy-callout-close: have conn still open from verification\n");
+ continue_transport = cutthrough.transport;
+ continue_hostname = string_copy(cutthrough.host.name);
+ continue_host_address = string_copy(cutthrough.host.address);
+ continue_sequence = 1;
+ sending_ip_address = cutthrough.snd_ip;
+ sending_port = cutthrough.snd_port;
+ smtp_peer_options = cutthrough.peer_options;
+ }
+
/* If this is a run to continue delivery down an already-established
channel, check that this set of addresses matches the transport and
the channel. If it does not, defer the addresses. If a host list exists,
we must check that the continue host is on the list. Otherwise, the
host is set in the transport. */
- continue_more = FALSE; /* In case got set for the last lot */
+ f.continue_more = FALSE; /* In case got set for the last lot */
if (continue_transport)
{
- BOOL ok = Ustrcmp(continue_transport, tp->name) == 0;
- if (ok && addr->host_list)
+ BOOL ok;
+
+ if (atrn_domains)
+ { continue_transport = tp->drinst.name; ok = TRUE; }
+ else
+ ok = Ustrcmp(continue_transport, tp->drinst.name) == 0;
+
+/*XXX do we need to check for a DANEd conn vs. a change of domain? */
+
+ /* If the transport is about to override the host list do not check
+ it here but take the cost of running the transport process to discover
+ if the continued_hostname connection is suitable. This is a layering
+ violation which is unfortunate as it requires we haul in the smtp
+ include file. */
+
+ if (ok)
{
- host_item *h;
- ok = FALSE;
- for (h = addr->host_list; h; h = h->next)
- if (Ustrcmp(h->name, continue_hostname) == 0)
-/*XXX should also check port here */
- { ok = TRUE; break; }
+ transport_info * ti = tp->drinst.info;
+ smtp_transport_options_block * ob = tp->drinst.options_block;
+
+ if ( !( Ustrcmp(ti->drinfo.driver_name, "smtp") == 0
+ && ob && ob->hosts_override && ob->hosts
+ )
+ && addr->host_list
+ )
+ {
+ ok = FALSE;
+ for (host_item * h = addr->host_list; h; h = h->next)
+ if (Ustrcmp(h->name, continue_hostname) == 0)
+ /*XXX should also check port here */
+ { ok = TRUE; break; }
+ }
}
/* Addresses not suitable; defer or queue for fallback hosts (which
if (!ok)
{
- DEBUG(D_deliver) debug_printf("not suitable for continue_transport\n");
+ DEBUG(D_deliver) debug_printf("not suitable for continue_transport (%s)\n",
+ Ustrcmp(continue_transport, tp->drinst.name) != 0
+ ? string_sprintf("tpt %s vs %s", continue_transport, tp->drinst.name)
+ : string_sprintf("no host matching %s", continue_hostname));
if (serialize_key) enq_end(serialize_key);
if (addr->fallback_hosts && !fallback)
for (next = addr; ; next = next->next)
{
next->host_list = next->fallback_hosts;
- DEBUG(D_deliver) debug_printf("%s queued for fallback host(s)\n", next->address);
+ DEBUG(D_deliver)
+ debug_printf("%s queued for fallback host(s)\n", next->address);
if (!next->next) break;
}
next->next = addr_fallback;
continue;
}
+ }
- /* Set a flag indicating whether there are further addresses that list
- the continued host. This tells the transport to leave the channel open,
- but not to pass it to another delivery process. */
+ /* Once we hit the max number of parallel transports set a flag indicating
+ whether there are further addresses that list the same host. This tells the
+ transport to leave the channel open for us. */
+/*XXX maybe we should *count* possible further's, and set continue_more if
+parmax * tpt-max is exceeded? */
- for (next = addr_remote; next; next = next->next)
+ if (parcount+1 >= remote_max_parallel)
+ {
+ host_item * h1 = addr->host_list;
+ if (h1)
{
- host_item *h;
- for (h = next->host_list; h; h = h->next)
- if (Ustrcmp(h->name, continue_hostname) == 0)
- { continue_more = TRUE; break; }
+ const uschar * name = continue_hostname ? continue_hostname : h1->name;
+ for (next = addr_remote; next && !f.continue_more; next = next->next)
+ for (host_item * h = next->host_list; h; h = h->next)
+ if (Ustrcmp(h->name, name) == 0)
+ { f.continue_more = TRUE; break; }
}
}
+ else DEBUG(D_deliver)
+ debug_printf(
+ "not reached parallelism limit (%d/%d) so not setting continue_more\n",
+ parcount+1, remote_max_parallel);
/* The transports set up the process info themselves as they may connect
to more than one remote machine. They also have to set up the filter
fails, it is probably because the value of remote_max_parallel is so
large that too many file descriptors for pipes have been created. Arrange
to wait for a process to finish, and then try again. If we still can't
- create a pipe when all processes have finished, break the retry loop. */
+ create a pipe when all processes have finished, break the retry loop.
+ Use socketpair() rather than pipe() so we can pass an fd back from the
+ transport process.
+ */
while (!pipe_done)
{
- if (pipe(pfd) == 0) pipe_done = TRUE;
- else if (parcount > 0) parmax = parcount;
- else break;
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) == 0) pipe_done = TRUE;
+ else if (parcount > 0) parmax = parcount;
+ else break;
/* We need to make the reading end of the pipe non-blocking. There are
two different options for this. Exim is cunningly (I hope!) coded so
that it can use either of them, though it prefers O_NONBLOCK, which
distinguishes between EOF and no-more-data. */
+/* The data appears in a timely manner and we already did a poll on
+all pipes, so I do not see a reason to use non-blocking IO here
+
#ifdef O_NONBLOCK
(void)fcntl(pfd[pipe_read], F_SETFL, O_NONBLOCK);
#else
(void)fcntl(pfd[pipe_read], F_SETFL, O_NDELAY);
#endif
+*/
/* If the maximum number of subprocesses already exist, wait for a process
to finish. If we ran out of file descriptors, parmax will have been reduced
}
/* Now fork a subprocess to do the remote delivery, but before doing so,
- ensure that any cached resourses are released so as not to interfere with
+ ensure that any cached resources are released so as not to interfere with
what happens in the subprocess. */
search_tidyup();
- if ((pid = fork()) == 0)
+/*
+A continued-tpt will, in the tpt parent here, call par_reduce for
+the one child. But we are hoping to never do continued-transport...
+SO.... we may have called par_reduce for a single child, above when we'd
+hit the limit on child-count. Possibly multiple times with different
+transports and target hosts. Does it matter if several return a suggested
+next-id, and we lose all but the last? Hmm. Less parallel working would
+happen. Perhaps still do continued-tpt once one has been set? No, that won't
+work for all cases.
+BAH.
+Could take the initial continued-tpt hit, and then do the next-id thing?
+
+do_remote_deliveries par_reduce par_wait par_read_pipe
+*/
+
+ /*XXX what about firsttime? */
+ /*XXX also, ph1? Note tp->name would possibly change per message,
+ so a check/close/open would be needed. Might want to change that var name
+ "continue_wait_db" as we'd be using it for a non-continued-transport
+ context. */
+ if (continue_transport && !exim_lockfile_needed())
+ if (!continue_wait_db)
+ {
+ continue_wait_db = dbfn_open_multi(
+ string_sprintf("wait-%.200s", continue_transport),
+ O_RDWR,
+ (open_db *) store_get(sizeof(open_db), GET_UNTAINTED));
+ continue_next_id[0] = '\0';
+ }
+
+ if ((pid = exim_fork(f.queue_2stage ? US"transport ph1":US"transport")) == 0)
{
int fd = pfd[pipe_write];
host_item *h;
- /* Setting this global in the subprocess means we need never clear it */
- transport_name = tp->name;
+ /* Setting these globals in the subprocess means we need never clear them */
+
+ transport_name = tp->drinst.name;
+ if (addr->router) router_name = addr->router->drinst.name;
+ driver_srcfile = tp->drinst.srcfile;
+ driver_srcline = tp->drinst.srcline;
/* There are weird circumstances in which logging is disabled */
- disable_logging = tp->disable_logging;
+ f.disable_logging = tp->disable_logging;
/* Show pids on debug output if parallelism possible */
if (parmax > 1 && (parcount > 0 || addr_remote))
- {
DEBUG(D_any|D_v) debug_selector |= D_pid;
- DEBUG(D_deliver) debug_printf("Remote delivery process started\n");
- }
/* Reset the random number generator, so different processes don't all
have the same sequence. In the test harness we want different, but
predictable settings for each delivery process, so do something explicit
here rather they rely on the fixed reset in the random number function. */
- random_seed = running_in_test_harness? 42 + 2*delivery_count : 0;
+ random_seed = f.running_in_test_harness ? 42 + 2*delivery_count : 0;
/* Set close-on-exec on the pipe so that it doesn't get passed on to
a new process that may be forked to do another delivery down the same
{
uschar * fname = spool_fname(US"input", message_subdir, message_id, US"-D");
- if ((deliver_datafile = Uopen(fname,
-#ifdef O_CLOEXEC
- O_CLOEXEC |
-#endif
- O_RDWR | O_APPEND, 0)) < 0)
+ if ( (deliver_datafile = Uopen(fname, EXIM_CLOEXEC | O_RDWR | O_APPEND, 0))
+ < 0)
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to reopen %s for remote "
"parallel delivery: %s", fname, strerror(errno));
}
- /* Set the close-on-exec flag */
-#ifndef O_CLOEXEC
+#ifndef O_CLOEXEC /* Set the close-on-exec flag */
(void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) |
FD_CLOEXEC);
#endif
exim_setugid(uid, gid, use_initgroups,
string_sprintf("remote delivery to %s with transport=%s",
- addr->address, tp->name));
+ addr->address, tp->drinst.name));
/* Close the unwanted half of this process' pipe, set the process state,
and run the transport. Afterwards, transport_count will contain the number
of bytes written. */
(void)close(pfd[pipe_read]);
- set_process_info("delivering %s using %s", message_id, tp->name);
+ set_process_info("delivering %s using %s", message_id, tp->drinst.name);
debug_print_string(tp->debug_string);
- if (!(tp->info->code)(addr->transport, addr)) replicate_status(addr);
+
+ {
+ transport_info * ti = tp->drinst.info;
+ if (!(ti->code)(addr->transport, addr)) /* Call the transport */
+ replicate_status(addr);
+ }
set_process_info("delivering %s (just run %s for %s%s in subprocess)",
- message_id, tp->name, addr->address, addr->next ? ", ..." : "");
+ message_id, tp->drinst.name, addr->address, addr->next ? ", ..." : "");
/* Ensure any cached resources that we used are now released */
is flagged by an identifying byte, and is then in a fixed format (with
strings terminated by zeros), and there is a final terminator at the
end. The host information and retry information is all attached to
- the first address, so that gets sent at the start. */
+ the first address, so that gets sent at the start.
+
+ Result item tags:
+ A C D H I K L P R S T X Z
+ */
/* Host unusability information: for most success cases this will
be null. */
{
if (!h->address || h->status < hstatus_unusable) continue;
sprintf(CS big_buffer, "%c%c%s", h->status, h->why, h->address);
- rmt_dlv_checked_write(fd, 'H', '0', big_buffer, Ustrlen(big_buffer+2) + 3);
+ rmt_dlv_checked_write(fd, 'H','0', big_buffer, Ustrlen(big_buffer+2) + 3);
}
/* The number of bytes written. This is the same for each address. Even
/* Information about what happened to each address. Four item types are
used: an optional 'X' item first, for TLS information, then an optional "C"
item for any client-auth info followed by 'R' items for any retry settings,
- and finally an 'A' item for the remaining data. */
+ and finally an 'A' item for the remaining data. The actual recipient address
+ is not sent but is implicit in the address-chain being handled. */
for(; addr; addr = addr->next)
{
- uschar *ptr;
- retry_item *r;
+ uschar * ptr;
- /* The certificate verification status goes into the flags */
+#ifndef DISABLE_TLS
+ /* The certificate verification status goes into the flags, in A0 */
if (tls_out.certificate_verified) setflag(addr, af_cert_verified);
-#ifdef EXPERIMENTAL_DANE
+# ifdef SUPPORT_DANE
if (tls_out.dane_verified) setflag(addr, af_dane_verified);
-#endif
+# endif
+# ifndef DISABLE_TLS_RESUME
+ if (tls_out.resumption & RESUME_USED) setflag(addr, af_tls_resume);
+# endif
/* Use an X item only if there's something to send */
-#ifdef SUPPORT_TLS
if (addr->cipher)
{
ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1;
if (!addr->peerdn)
*ptr++ = 0;
else
- {
- ptr += sprintf(CS ptr, "%.512s", addr->peerdn);
- ptr++;
- }
+ ptr += sprintf(CS ptr, "%.512s", addr->peerdn) + 1;
rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer);
}
+ else if (continue_proxy_cipher)
+ {
+ ptr = big_buffer + sprintf(CS big_buffer, "%.128s", continue_proxy_cipher) + 1;
+ *ptr++ = 0;
+ rmt_dlv_checked_write(fd, 'X', '1', big_buffer, ptr - big_buffer);
+ }
+
if (addr->peercert)
{
ptr = big_buffer;
- if (!tls_export_cert(ptr, big_buffer_size-2, addr->peercert))
+ if (tls_export_cert(ptr, big_buffer_size-2, addr->peercert))
while(*ptr++);
else
*ptr++ = 0;
if (addr->ourcert)
{
ptr = big_buffer;
- if (!tls_export_cert(ptr, big_buffer_size-2, addr->ourcert))
+ if (tls_export_cert(ptr, big_buffer_size-2, addr->ourcert))
while(*ptr++);
else
*ptr++ = 0;
rmt_dlv_checked_write(fd, 'X', '4', big_buffer, ptr - big_buffer);
}
# endif
-#endif /*SUPPORT_TLS*/
+#endif /*DISABLE_TLS*/
if (client_authenticator)
{
}
#ifndef DISABLE_PRDR
- if (addr->flags & af_prdr_used)
+ if (testflag(addr, af_prdr_used))
rmt_dlv_checked_write(fd, 'P', '0', NULL, 0);
#endif
- if (addr->flags & af_chunking_used)
+ if (testflag(addr, af_pipelining))
+#ifndef DISABLE_PIPE_CONNECT
+ if (testflag(addr, af_early_pipe))
+ rmt_dlv_checked_write(fd, 'L', '2', NULL, 0);
+ else
+#endif
+ rmt_dlv_checked_write(fd, 'L', '1', NULL, 0);
+
+ if (testflag(addr, af_chunking_used))
rmt_dlv_checked_write(fd, 'K', '0', NULL, 0);
+ if (testflag(addr, af_tcp_fastopen_conn))
+ rmt_dlv_checked_write(fd, 'T',
+ testflag(addr, af_tcp_fastopen) ? testflag(addr, af_tcp_fastopen_data)
+ ? '2' : '1' : '0',
+ NULL, 0);
+
memcpy(big_buffer, &addr->dsn_aware, sizeof(addr->dsn_aware));
rmt_dlv_checked_write(fd, 'D', '0', big_buffer, sizeof(addr->dsn_aware));
- DEBUG(D_deliver) debug_printf("DSN write: addr->dsn_aware = %d\n", addr->dsn_aware);
/* Retry information: for most success cases this will be null. */
- for (r = addr->retries; r; r = r->next)
+ for (retry_item * r = addr->retries; r; r = r->next)
{
sprintf(CS big_buffer, "%c%.500s", r->flags, r->key);
ptr = big_buffer + Ustrlen(big_buffer+2) + 3;
- memcpy(ptr, &(r->basic_errno), sizeof(r->basic_errno));
+ memcpy(ptr, &r->basic_errno, sizeof(r->basic_errno));
ptr += sizeof(r->basic_errno);
- memcpy(ptr, &(r->more_errno), sizeof(r->more_errno));
+ memcpy(ptr, &r->more_errno, sizeof(r->more_errno));
ptr += sizeof(r->more_errno);
if (!r->message) *ptr++ = 0; else
{
rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer);
}
+#ifndef DISABLE_DKIM
+ if (addr->dkim_used && LOGGING(dkim_verbose))
+ {
+ DEBUG(D_deliver) debug_printf("dkim used: %s\n", addr->dkim_used);
+ ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->dkim_used) + 1;
+ rmt_dlv_checked_write(fd, 'A', '4', big_buffer, ptr - big_buffer);
+ }
+#endif
+
+ if (testflag(addr, af_new_conn) || testflag(addr, af_cont_conn))
+ {
+ DEBUG(D_deliver) debug_printf("%scontinued-connection\n",
+ testflag(addr, af_new_conn) ? "non-" : "");
+ big_buffer[0] = testflag(addr, af_new_conn) ? BIT(1) : BIT(2);
+ rmt_dlv_checked_write(fd, 'A', '3', big_buffer, 1);
+ }
+
#ifdef SUPPORT_SOCKS
if (LOGGING(proxy) && proxy_session)
{
#endif
/* The rest of the information goes in an 'A0' item. */
-
+#ifdef notdef
+ DEBUG(D_deliver)
+ debug_printf("%s %s for MAIL\n",
+ addr->special_action == '=' ? "initial RCPT"
+ : addr->special_action == '-' ? "additional RCPT" : "?",
+ addr->address);
+#endif
sprintf(CS big_buffer, "%c%c", addr->transport_return, addr->special_action);
ptr = big_buffer + 2;
- memcpy(ptr, &(addr->basic_errno), sizeof(addr->basic_errno));
+ memcpy(ptr, &addr->basic_errno, sizeof(addr->basic_errno));
ptr += sizeof(addr->basic_errno);
- memcpy(ptr, &(addr->more_errno), sizeof(addr->more_errno));
+ memcpy(ptr, &addr->more_errno, sizeof(addr->more_errno));
ptr += sizeof(addr->more_errno);
- memcpy(ptr, &(addr->flags), sizeof(addr->flags));
+ memcpy(ptr, &addr->delivery_time, sizeof(addr->delivery_time));
+ ptr += sizeof(addr->delivery_time);
+ memcpy(ptr, &addr->flags, sizeof(addr->flags));
ptr += sizeof(addr->flags);
if (!addr->message) *ptr++ = 0; else
{
ptr += sprintf(CS ptr, "%.256s", addr->host_used->name) + 1;
ptr += sprintf(CS ptr, "%.64s", addr->host_used->address) + 1;
- memcpy(ptr, &(addr->host_used->port), sizeof(addr->host_used->port));
+ memcpy(ptr, &addr->host_used->port, sizeof(addr->host_used->port));
ptr += sizeof(addr->host_used->port);
/* DNS lookup status */
if (LOGGING(incoming_interface) && sending_ip_address)
#endif
{
- uschar * ptr;
- ptr = big_buffer + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1;
+ uschar * ptr = big_buffer
+ + sprintf(CS big_buffer, "%.128s", sending_ip_address) + 1;
ptr += sprintf(CS ptr, "%d", sending_port) + 1;
rmt_dlv_checked_write(fd, 'I', '0', big_buffer, ptr - big_buffer);
}
+ /* Continuation message-id, if a continuation is for that reason,
+ and the next sequence number (MAIL FROM count) for the connection. */
+
+ if (*continue_next_id)
+ rmt_dlv_checked_write(fd, 'Z', '1', big_buffer,
+ sprintf(CS big_buffer, "%.*s %u",
+ MESSAGE_ID_LENGTH, continue_next_id, continue_sequence+1) + 1);
+
+ /* Connection details, only on the first suggested continuation for
+ wait-db ones, but for all continue-more ones (though any after the
+ delivery proc has the info are pointless). */
+
+ if (continue_hostname && continue_fd >= 0)
+ {
+ {
+ uschar * ptr = big_buffer;
+ ptr += sprintf(CS ptr, "%.128s", continue_transport) + 1;
+ ptr += sprintf(CS ptr, "%.128s", continue_hostname) + 1;
+ ptr += sprintf(CS ptr, "%.128s", continue_host_address) + 1;
+ ptr += sprintf(CS ptr, "%u", continue_sequence+1) + 1;
+ rmt_dlv_checked_write(fd, 'Z', '2', big_buffer, ptr - big_buffer);
+ send_fd_over_socket(fd, continue_fd);
+ }
+
+ big_buffer[0] = smtp_peer_options;
+ big_buffer[1] = f.smtp_authenticated ? 1 : 0;
+ rmt_dlv_checked_write(fd, 'Z', '3', big_buffer, 2);
+
+ if (tls_out.active.sock >= 0 || continue_proxy_cipher)
+ rmt_dlv_checked_write(fd, 'Z', '4', big_buffer,
+ sprintf(CS big_buffer, "%.128s", continue_proxy_cipher) + 1);
+
+ if (tls_out.sni)
+ rmt_dlv_checked_write(fd, 'Z',
+#ifdef SUPPORT_DANE
+ tls_out.dane_verified ? '5' : '6',
+#else
+ '6',
+#endif
+ tls_out.sni, Ustrlen(tls_out.sni)+1);
+
+#ifndef DISABLE_ESMTP_LIMITS
+ if (continue_limit_mail || continue_limit_rcpt || continue_limit_rcptdom)
+ rmt_dlv_checked_write(fd, 'Z', '7', big_buffer,
+ sprintf(CS big_buffer, "%u %u %u",
+ continue_limit_mail, continue_limit_rcpt,
+ continue_limit_rcptdom) + 1);
+#endif
+
+#ifdef SUPPORT_SOCKS
+ if (proxy_session)
+ {
+ uschar * ptr = big_buffer;
+ ptr += sprintf(CS ptr, "%.128s", proxy_local_address) + 1;
+ ptr += sprintf(CS ptr, "%u", proxy_local_port) + 1;
+ ptr += sprintf(CS ptr, "%.128s", proxy_external_address) + 1;
+ ptr += sprintf(CS ptr, "%u", proxy_external_port) + 1;
+ rmt_dlv_checked_write(fd, 'Z', '8', big_buffer, ptr - big_buffer);
+ }
+#endif
+ }
+
/* Add termination flag, close the pipe, and that's it. The character
- after 'Z' indicates whether continue_transport is now NULL or not.
+ after "Z0" indicates whether continue_transport is now NULL or not.
A change from non-NULL to NULL indicates a problem with a continuing
connection. */
big_buffer[0] = continue_transport ? '1' : '0';
rmt_dlv_checked_write(fd, 'Z', '0', big_buffer, 1);
(void)close(fd);
- exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS);
}
/* Back in the mainline: close the unwanted half of the pipe. */
(void)close(pfd[pipe_write]);
+ /* If we have a connection still open from a verify stage (lazy-close)
+ release its TLS library context (if any) as responsibility was passed to
+ the delivery child process. */
+
+ if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only)
+ {
+#ifndef DISABLE_TLS
+ if (cutthrough.is_tls)
+ tls_close(cutthrough.cctx.tls_ctx, TLS_NO_SHUTDOWN);
+#endif
+ (void) close(cutthrough.cctx.sock);
+ release_cutthrough_connection(US"passed to transport proc");
+ }
+
/* Fork failed; defer with error message */
- if (pid < 0)
+ if (pid == -1)
{
(void)close(pfd[pipe_read]);
panicmsg = string_sprintf("fork failed for remote delivery to %s: %s",
(continue_transport gets set to NULL) before we consider any other addresses
in this message. */
- if (continue_transport) par_reduce(0, fallback);
+ if (continue_transport)
+ {
+ par_reduce(0, fallback);
+ if (!*continue_next_id && continue_wait_db)
+ { dbfn_close_multi(continue_wait_db); continue_wait_db = NULL; }
+
+ /* After the first ATRN message on the channel the EHLO has been dealt with;
+ ensure subsequence ones do not do that. */
+
+ atrn_domains = NULL;
+ }
/* Otherwise, if we are running in the test harness, wait a bit, to let the
newly created process get going before we create another process. This should
- ensure repeatability in the tests. We only need to wait a tad. */
+ ensure repeatability in the tests. Wait long enough for most cases to complete
+ the transport. */
- else if (running_in_test_harness) millisleep(500);
+ else
+ testharness_pause_ms(600);
continue;
int
deliver_split_address(address_item * addr)
{
-uschar * address = addr->address;
+const uschar * address = addr->address;
uschar * domain;
uschar * t;
int len;
this, Jan 1999.] We know the syntax is valid, so this can be done by simply
removing quoting backslashes and any unquoted doublequotes. */
-t = addr->cc_local_part = store_get(len+1);
+addr->cc_local_part = t = store_get(len+1, address);
while(len-- > 0)
{
int c = *address++;
}
else *t++ = c;
}
-*t = 0;
+*t = '\0';
/* We do the percent hack only for those domains that are listed in
percent_hack_domains. A loop is required, to copy with multiple %-hacks. */
if (percent_hack_domains)
{
int rc;
- uschar *new_address = NULL;
- uschar *local_part = addr->cc_local_part;
+ uschar * new_address = NULL;
+ const uschar * local_part = addr->cc_local_part;
deliver_domain = addr->domain; /* set $domain */
if (new_address)
{
- address_item *new_parent = store_get(sizeof(address_item));
+ address_item * new_parent = store_get(sizeof(address_item), GET_UNTAINTED);
*new_parent = *addr;
addr->parent = new_parent;
+ new_parent->child_count = 1;
addr->address = new_address;
addr->unique = string_copy(new_address);
addr->domain = deliver_domain;
static uschar *
next_emf(FILE *f, uschar *which)
{
-int size = 256;
-int ptr = 0;
-uschar *para, *yield;
+uschar *yield;
+gstring * para;
uschar buffer[256];
if (!f) return NULL;
if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0)
return NULL;
-para = store_get(size);
+para = string_get(256);
for (;;)
{
- para = string_cat(para, &size, &ptr, buffer);
+ para = string_cat(para, buffer);
if (!Ufgets(buffer, sizeof(buffer), f) || Ustrcmp(buffer, "****\n") == 0)
break;
}
-para[ptr] = 0;
-
-if ((yield = expand_string(para)))
+if ((yield = expand_string(string_from_gstring(para))))
return yield;
log_write(0, LOG_MAIN|LOG_PANIC, "Failed to expand string from "
continue_closedown(void)
{
if (continue_transport)
- {
- transport_instance *t;
- for (t = transports; t; t = t->next)
- if (Ustrcmp(t->name, continue_transport) == 0)
+ for (transport_instance * t = transports; t; t = t->drinst.next)
+ if (Ustrcmp(t->drinst.name, continue_transport) == 0)
{
- if (t->info->closedown) (t->info->closedown)(t);
+ transport_info * ti = t->drinst.info;
+ if (ti->closedown) (ti->closedown)(t);
+ continue_transport = NULL;
break;
}
- }
return DELIVER_NOT_ATTEMPTED;
}
*/
static BOOL
-print_address_information(address_item *addr, FILE *f, uschar *si, uschar *sc,
- uschar *se)
+print_address_information(address_item * addr, FILE * f, uschar * si,
+ uschar * sc, uschar * se)
{
BOOL yield = TRUE;
-uschar *printed = US"";
-address_item *ancestor = addr;
+const uschar * printed = US"";
+address_item * ancestor = addr;
while (ancestor->parent) ancestor = ancestor->parent;
fprintf(f, "%s", CS si);
else
{
- uschar *s = addr->address;
- uschar *ss;
+ const uschar * s = addr->address;
+ const uschar * ss;
if (addr->address[0] == '>') { ss = US"mail"; s++; }
else if (addr->address[0] == '|') ss = US"pipe";
if (ancestor != addr)
{
- uschar *original = ancestor->onetime_parent;
+ const uschar * original = ancestor->onetime_parent;
if (!original) original= ancestor->address;
if (strcmpic(original, printed) != 0)
fprintf(f, "%s(%sgenerated from %s)", sc,
*/
static void
-print_address_error(address_item *addr, FILE *f, uschar *t)
+print_address_error(address_item * addr, FILE * f, const uschar * t)
{
int count = Ustrlen(t);
-uschar *s = testflag(addr, af_pass_message)? addr->message : NULL;
+uschar * s = testflag(addr, af_pass_message) ? addr->message : NULL;
if (!s && !(s = addr->user_message))
return;
fprintf(f, "\n "); /* sic (because space follows) */
count = 0;
}
+ else if (count > 254) /* arbitrary limit */
+ {
+ fprintf(f, "[truncated]");
+ do s++; while (*s && !(*s == '\\' && s[1] == '\n'));
+ }
}
}
static void
print_dsn_diagnostic_code(const address_item *addr, FILE *f)
{
-uschar *s = testflag(addr, af_pass_message) ? addr->message : NULL;
+uschar * s = testflag(addr, af_pass_message) ? addr->message : NULL;
+unsigned cnt;
/* af_pass_message and addr->message set ? print remote host answer */
-if (s)
- {
- DEBUG(D_deliver)
- debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message);
+if (!s)
+ return;
- /* search first ": ". we assume to find the remote-MTA answer there */
- if (!(s = Ustrstr(addr->message, ": ")))
- return; /* not found, bail out */
- s += 2; /* skip ": " */
- fprintf(f, "Diagnostic-Code: smtp; ");
- }
-/* no message available. do nothing */
-else return;
+DEBUG(D_deliver)
+ debug_printf("DSN Diagnostic-Code: addr->message = %s\n", addr->message);
+
+/* search first ": ". we assume to find the remote-MTA answer there */
+if (!(s = Ustrstr(addr->message, ": ")))
+ return; /* not found, bail out */
+
+s += 2; /* skip ": " */
+cnt = fprintf(f, "Diagnostic-Code: smtp; ");
while (*s)
+ {
+ if (cnt > 950) /* RFC line length limit: 998 */
+ {
+ DEBUG(D_deliver) debug_printf("print_dsn_diagnostic_code() truncated line\n");
+ fputs("[truncated]", f);
+ break;
+ }
+
if (*s == '\\' && s[1] == 'n')
{
fputs("\n ", f); /* as defined in RFC 3461 */
s += 2;
+ cnt += 2;
}
else
+ {
fputc(*s++, f);
+ cnt++;
+ }
+ }
fputc('\n', f);
}
*/
static void
-do_duplicate_check(address_item **anchor)
+do_duplicate_check(address_item ** anchor)
{
-address_item *addr;
+address_item * addr;
while ((addr = *anchor))
{
- tree_node *tnode;
+ tree_node * tnode;
if (testflag(addr, af_pfr))
- {
- anchor = &(addr->next);
- }
+ anchor = &addr->next;
else if ((tnode = tree_search(tree_duplicates, addr->unique)))
{
DEBUG(D_deliver|D_route)
else
{
tree_add_duplicate(addr->unique, addr);
- anchor = &(addr->next);
+ anchor = &addr->next;
}
}
}
-/*************************************************
-* Deliver one message *
-*************************************************/
-
-/* This is the function which is called when a message is to be delivered. It
-is passed the id of the message. It is possible that the message no longer
-exists, if some other process has delivered it, and it is also possible that
-the message is being worked on by another process, in which case the data file
-will be locked.
+/************************************************/
-If no delivery is attempted for any of the above reasons, the function returns
-DELIVER_NOT_ATTEMPTED.
+static void
+print_dsn_addr_action(FILE * f, address_item * addr,
+ uschar * action, uschar * status)
+{
+address_item * pa;
-If the give_up flag is set true, do not attempt any deliveries, but instead
-fail all outstanding addresses and return the message to the sender (or
-whoever).
+if (addr->dsn_orcpt)
+ fprintf(f,"Original-Recipient: %s\n", addr->dsn_orcpt);
-A delivery operation has a process all to itself; we never deliver more than
-one message in the same process. Therefore we needn't worry too much about
-store leakage.
+for (pa = addr; pa->parent; ) pa = pa->parent;
+fprintf(f, "Action: %s\n"
+ "Final-Recipient: rfc822;%s\n"
+ "Status: %s\n",
+ action, pa->address, status);
+}
-Liable to be called as root.
-Arguments:
- id the id of the message to be delivered
- forced TRUE if delivery was forced by an administrator; this overrides
- retry delays and causes a delivery to be tried regardless
- give_up TRUE if an administrator has requested that delivery attempts
- be abandoned
-Returns: When the global variable mua_wrapper is FALSE:
- DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made
- DELIVER_NOT_ATTEMPTED otherwise (see comment above)
- When the global variable mua_wrapper is TRUE:
- DELIVER_MUA_SUCCEEDED if delivery succeeded
- DELIVER_MUA_FAILED if delivery failed
- DELIVER_NOT_ATTEMPTED if not attempted (should not occur)
-*/
+/* When running in the test harness, there's an option that allows us to
+fudge this time so as to get repeatability of the tests. Take the first
+time off the list. In queue runs, the list pointer gets updated in the
+calling process. */
int
-deliver_message(uschar *id, BOOL forced, BOOL give_up)
+test_harness_fudged_queue_time(int actual_time)
{
-int i, rc;
-int final_yield = DELIVER_ATTEMPTED_NORMAL;
-time_t now = time(NULL);
-address_item *addr_last = NULL;
-uschar *filter_message = NULL;
-int process_recipients = RECIP_ACCEPT;
-open_db dbblock;
-open_db *dbm_file;
-extern int acl_where;
+int qt;
+if ( f.running_in_test_harness && *fudged_queue_times
+ && (qt = readconf_readtime(fudged_queue_times, '/', FALSE)) >= 0)
+ {
+ DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n",
+ fudged_queue_times);
+ return qt;
+ }
+return actual_time;
+}
-uschar *info = queue_run_pid == (pid_t)0
- ? string_sprintf("delivering %s", id)
- : string_sprintf("delivering %s (queue run pid %d)", id, queue_run_pid);
+/************************************************/
-/* If the D_process_info bit is on, set_process_info() will output debugging
-information. If not, we want to show this initial information if D_deliver or
-D_queue_run is set or in verbose mode. */
-
-set_process_info("%s", info);
+static FILE *
+expand_open(const uschar * filename,
+ const uschar * optname, const uschar * reason)
+{
+const uschar * s = expand_cstring(filename);
+FILE * fp = NULL;
+
+if (!s || !*s)
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "Failed to expand %s: '%s'\n", optname, filename);
+else if (*s != '/' || is_tainted(s))
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s is not %s after expansion: '%s'\n",
+ optname, *s == '/' ? "untainted" : "absolute", s);
+else if (!(fp = Ufopen(s, "rb")))
+ log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for %s "
+ "message texts: %s", s, reason, strerror(errno));
+return fp;
+}
-if ( !(debug_selector & D_process_info)
- && (debug_selector & (D_deliver|D_queue_run|D_v))
- )
- debug_printf("%s\n", info);
-/* Ensure that we catch any subprocesses that are created. Although Exim
-sets SIG_DFL as its initial default, some routes through the code end up
-here with it set to SIG_IGN - cases where a non-synchronous delivery process
-has been forked, but no re-exec has been done. We use sigaction rather than
-plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be
-sure it is turned off. (There was a problem on AIX with this.) */
+/* Output the given header and string, converting either
+the sequence "\n" or a real newline into newline plus space.
+If that still takes us past column 78, look for the last space
+and split there too.
+Append a newline if string did not have one.
+Limit to about 1024 chars total. */
-#ifdef SA_NOCLDWAIT
- {
- struct sigaction act;
- act.sa_handler = SIG_DFL;
- sigemptyset(&(act.sa_mask));
- act.sa_flags = 0;
- sigaction(SIGCHLD, &act, NULL);
- }
-#else
-signal(SIGCHLD, SIG_DFL);
-#endif
+static void
+dsn_put_wrapped(FILE * fp, const uschar * header, const uschar * s)
+{
+gstring * g = string_cat(NULL, header);
-/* Make the forcing flag available for routers and transports, set up the
-global message id field, and initialize the count for returned files and the
-message size. This use of strcpy() is OK because the length id is checked when
-it is obtained from a command line (the -M or -q options), and otherwise it is
-known to be a valid message id. */
+g = string_cat(g, s);
+gstring_release_unused(g);
+fprintf(fp, "%s\n", wrap_header(string_from_gstring(g), 79, 1023, US" ", 1));
+}
-Ustrcpy(message_id, id);
-deliver_force = forced;
-return_count = 0;
-message_size = 0;
-/* Initialize some flags */
-update_spool = FALSE;
-remove_journal = TRUE;
-/* Set a known context for any ACLs we call via expansions */
-acl_where = ACL_WHERE_DELIVERY;
+/*************************************************
+* Send a bounce message *
+*************************************************/
-/* Reset the random number generator, so that if several delivery processes are
-started from a queue runner that has already used random numbers (for sorting),
-they don't all get the same sequence. */
+/* Find the error address for the first address, then send a message that
+includes all failed addresses that have the same error address. Note the
+bounce_recipient is a global so that it can be accessed by $bounce_recipient
+while creating a customized error message. */
-random_seed = 0;
+static void
+send_bounce_message(time_t now, const uschar * logtod)
+{
+pid_t pid;
+int fd;
-/* Open and lock the message's data file. Exim locks on this one because the
-header file may get replaced as it is re-written during the delivery process.
-Any failures cause messages to be written to the log, except for missing files
-while queue running - another process probably completed delivery. As part of
-opening the data file, message_subdir gets set. */
+if (!(bounce_recipient = addr_failed->prop.errors_address))
+ bounce_recipient = sender_address;
-if ((deliver_datafile = spool_open_datafile(id)) < 0)
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+/* Make a subprocess to send a message, using its stdin */
-/* The value of message_size at this point has been set to the data length,
-plus one for the blank line that notionally precedes the data. */
+if ((pid = child_open_exim(&fd, US"bounce-message")) < 0)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %ld (parent %ld) failed to "
+ "create child process to send failure message: %s",
+ (long)getpid(), (long)getppid(), strerror(errno));
-/* Now read the contents of the header file, which will set up the headers in
-store, and also the list of recipients and the tree of non-recipients and
-assorted flags. It updates message_size. If there is a reading or format error,
-give up; if the message has been around for sufficiently long, remove it. */
+/* Creation of child succeeded */
+else
{
- uschar * spoolname = string_sprintf("%s-H", id);
- if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK)
- {
- if (errno == ERRNO_SPOOLFORMAT)
- {
- struct stat statbuf;
- if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""),
- &statbuf) == 0)
- log_write(0, LOG_MAIN, "Format error in spool file %s: "
- "size=" OFF_T_FMT, spoolname, statbuf.st_size);
- else
- log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname);
+ int ch, rc, filecount = 0, rcount = 0;
+ uschar * bcc, * emf_text;
+ FILE * fp = fdopen(fd, "wb"), * emf = NULL;
+ BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0;
+ int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) *
+ DELIVER_IN_BUFFER_SIZE;
+ uschar * bound, * dsnlimitmsg, * dsnnotifyhdr;
+ int topt;
+ address_item ** paddr;
+ address_item * msgchain = NULL, ** pmsgchain = &msgchain;
+ address_item * handled_addr = NULL;
+
+ DEBUG(D_deliver)
+ debug_printf("sending error message to: %s\n", bounce_recipient);
+
+ /* Scan the addresses for all that have the same errors address, removing
+ them from the addr_failed chain, and putting them on msgchain. */
+
+ paddr = &addr_failed;
+ for (address_item * addr = addr_failed; addr; addr = *paddr)
+ if (Ustrcmp(bounce_recipient, addr->prop.errors_address
+ ? addr->prop.errors_address : sender_address) == 0)
+ { /* The same - dechain */
+ *paddr = addr->next;
+ *pmsgchain = addr;
+ addr->next = NULL;
+ pmsgchain = &addr->next;
}
else
- log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname,
- strerror(errno));
+ paddr = &addr->next; /* Not the same; skip */
- /* If we managed to read the envelope data, received_time contains the
- time the message was received. Otherwise, we can calculate it from the
- message id. */
+ /* Include X-Failed-Recipients: for automatic interpretation, but do
+ not let any one header line get too long. We do this by starting a
+ new header every 50 recipients. Omit any addresses for which the
+ "hide_child" flag is set. */
- if (rc != spool_read_hdrerror)
+ for (address_item * addr = msgchain; addr; addr = addr->next)
+ {
+ if (testflag(addr, af_hide_child)) continue;
+ if (rcount >= 50)
{
- received_time = 0;
- for (i = 0; i < 6; i++)
- received_time = received_time * BASE_62 + tab62[id[i] - '0'];
+ fprintf(fp, "\n");
+ rcount = 0;
}
+ fprintf(fp, "%s%s",
+ rcount++ == 0
+ ? "X-Failed-Recipients: "
+ : ",\n ",
+ testflag(addr, af_pfr) && addr->parent
+ ? string_printing(addr->parent->address)
+ : string_printing(addr->address));
+ }
+ if (rcount > 0) fprintf(fp, "\n");
- /* If we've had this malformed message too long, sling it. */
+ /* Output the standard headers */
- if (now - received_time > keep_malformed)
- {
- Uunlink(spool_fname(US"msglog", message_subdir, id, US""));
- Uunlink(spool_fname(US"input", message_subdir, id, US"-D"));
- Uunlink(spool_fname(US"input", message_subdir, id, US"-H"));
- Uunlink(spool_fname(US"input", message_subdir, id, US"-J"));
- log_write(0, LOG_MAIN, "Message removed because older than %s",
- readconf_printtime(keep_malformed));
- }
+ if (errors_reply_to)
+ fprintf(fp, "Reply-To: %s\n", errors_reply_to);
+ fprintf(fp, "Auto-Submitted: auto-replied\n");
+ moan_write_from(fp);
+ fprintf(fp, "To: %s\n", bounce_recipient);
+ moan_write_references(fp, NULL);
- (void)close(deliver_datafile);
- deliver_datafile = -1;
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
- }
- }
+ /* generate boundary string and output MIME-Headers */
+ bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
-/* The spool header file has been read. Look to see if there is an existing
-journal file for this message. If there is, it means that a previous delivery
-attempt crashed (program or host) before it could update the spool header file.
-Read the list of delivered addresses from the journal and add them to the
-nonrecipients tree. Then update the spool file. We can leave the journal in
-existence, as it will get further successful deliveries added to it in this
-run, and it will be deleted if this function gets to its end successfully.
-Otherwise it might be needed again. */
+ fprintf(fp, "Content-Type: multipart/report;"
+ " report-type=delivery-status; boundary=%s\n"
+ "MIME-Version: 1.0\n",
+ bound);
- {
- uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
- FILE * jread;
+ /* Open a template file if one is provided. Log failure to open, but
+ carry on - default texts will be used. */
- if ( (journal_fd = Uopen(fname, O_RDWR|O_APPEND
-#ifdef O_CLOEXEC
- | O_CLOEXEC
-#endif
-#ifdef O_NOFOLLOW
- | O_NOFOLLOW
-#endif
- , SPOOL_MODE)) >= 0
- && lseek(journal_fd, 0, SEEK_SET) == 0
- && (jread = fdopen(journal_fd, "rb"))
- )
- {
- while (Ufgets(big_buffer, big_buffer_size, jread))
- {
- int n = Ustrlen(big_buffer);
- big_buffer[n-1] = 0;
- tree_add_nonrecipient(big_buffer);
- DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from "
- "journal file\n", big_buffer);
- }
- rewind(jread);
- if ((journal_fd = dup(fileno(jread))) < 0)
- journal_fd = fileno(jread);
- else
- (void) fclose(jread); /* Try to not leak the FILE resource */
+ GET_OPTION("bounce_message_file");
+ if (bounce_message_file)
+ emf = expand_open(bounce_message_file,
+ US"bounce_message_file", US"error");
- /* Panic-dies on error */
- (void)spool_write_header(message_id, SW_DELIVERING, NULL);
- }
- else if (errno != ENOENT)
- {
- log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: "
- "%s", strerror(errno));
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
- }
+ /* Quietly copy to configured additional addresses if required. */
- /* A null recipients list indicates some kind of disaster. */
+ if ((bcc = moan_check_errorcopy(bounce_recipient)))
+ fprintf(fp, "Bcc: %s\n", bcc);
- if (!recipients_list)
- {
- (void)close(deliver_datafile);
- deliver_datafile = -1;
- log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname);
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
- }
- }
+ /* The texts for the message can be read from a template file; if there
+ isn't one, or if it is too short, built-in texts are used. The first
+ emf text is a Subject: and any other headers. */
+ if ((emf_text = next_emf(emf, US"header")))
+ fprintf(fp, "%s\n", emf_text);
+ else
+ fprintf(fp, "Subject: Mail delivery failed%s\n\n",
+ to_sender? ": returning message to sender" : "");
-/* Handle a message that is frozen. There are a number of different things that
-can happen, but in the default situation, unless forced, no delivery is
-attempted. */
+ /* output human readable part as text/plain section */
+ fprintf(fp, "--%s\n"
+ "Content-type: text/plain; charset=us-ascii\n\n",
+ bound);
-if (deliver_freeze)
- {
-#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
- /* Moving to another directory removes the message from Exim's view. Other
- tools must be used to deal with it. Logging of this action happens in
- spool_move_message() and its subfunctions. */
+ if ((emf_text = next_emf(emf, US"intro")))
+ fprintf(fp, "%s", CS emf_text);
+ else
+ {
+ fprintf(fp,
+/* This message has been reworded several times. It seems to be confusing to
+somebody, however it is worded. I have retreated to the original, simple
+wording. */
+"This message was created automatically by mail delivery software.\n");
- if ( move_frozen_messages
- && spool_move_message(id, message_subdir, US"", US"F")
- )
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
-#endif
+ if (bounce_message_text)
+ fprintf(fp, "%s", CS bounce_message_text);
+ if (to_sender)
+ fprintf(fp,
+"\nA message that you sent could not be delivered to one or more of its\n"
+"recipients. This is a permanent error. The following address(es) failed:\n");
+ else
+ fprintf(fp,
+"\nA message sent by\n\n <%s>\n\n"
+"could not be delivered to one or more of its recipients. The following\n"
+"address(es) failed:\n", sender_address);
+ }
+ fputc('\n', fp);
- /* For all frozen messages (bounces or not), timeout_frozen_after sets the
- maximum time to keep messages that are frozen. Thaw if we reach it, with a
- flag causing all recipients to be failed. The time is the age of the
- message, not the time since freezing. */
+ /* Process the addresses, leaving them on the msgchain if they have a
+ file name for a return message. (There has already been a check in
+ post_process_one() for the existence of data in the message file.) A TRUE
+ return from print_address_information() means that the address is not
+ hidden. */
- if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after)
+ paddr = &msgchain;
+ for (address_item * addr = msgchain; addr; addr = *paddr)
{
- log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after");
- process_recipients = RECIP_FAIL_TIMEOUT;
- }
+ if (print_address_information(addr, fp, US" ", US"\n ", US""))
+ print_address_error(addr, fp, US"");
- /* For bounce messages (and others with no sender), thaw if the error message
- ignore timer is exceeded. The message will be discarded if this delivery
- fails. */
+ /* End the final line for the address */
- else if (!*sender_address && message_age >= ignore_bounce_errors_after)
- log_write(0, LOG_MAIN, "Unfrozen by errmsg timer");
+ fputc('\n', fp);
- /* If this is a bounce message, or there's no auto thaw, or we haven't
- reached the auto thaw time yet, and this delivery is not forced by an admin
- user, do not attempt delivery of this message. Note that forced is set for
- continuing messages down the same channel, in order to skip load checking and
- ignore hold domains, but we don't want unfreezing in that case. */
+ /* Leave on msgchain if there's a return file. */
- else
- {
- if ( ( sender_address[0] == 0
- || auto_thaw <= 0
- || now <= deliver_frozen_at + auto_thaw
- )
- && ( !forced || !deliver_force_thaw
- || !admin_user || continue_hostname
- ) )
+ if (addr->return_file >= 0)
{
- (void)close(deliver_datafile);
- deliver_datafile = -1;
- log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ paddr = &addr->next;
+ filecount++;
}
- /* If delivery was forced (by an admin user), assume a manual thaw.
- Otherwise it's an auto thaw. */
+ /* Else save so that we can tick off the recipient when the
+ message is sent. */
- if (forced)
+ else
{
- deliver_manual_thaw = TRUE;
- log_write(0, LOG_MAIN, "Unfrozen by forced delivery");
+ *paddr = addr->next;
+ addr->next = handled_addr;
+ handled_addr = addr;
}
- else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw");
}
- /* We get here if any of the rules for unfreezing have triggered. */
-
- deliver_freeze = FALSE;
- update_spool = TRUE;
- }
+ fputc('\n', fp);
+ /* Get the next text, whether we need it or not, so as to be
+ positioned for the one after. */
-/* Open the message log file if we are using them. This records details of
-deliveries, deferments, and failures for the benefit of the mail administrator.
-The log is not used by exim itself to track the progress of a message; that is
-done by rewriting the header spool file. */
+ emf_text = next_emf(emf, US"generated text");
-if (message_logs)
- {
- uschar * fname = spool_fname(US"msglog", message_subdir, id, US"");
- uschar * error;
- int fd;
+ /* If there were any file messages passed by the local transports,
+ include them in the message. Then put the address on the handled chain.
+ In the case of a batch of addresses that were all sent to the same
+ transport, the return_file field in all of them will contain the same
+ fd, and the return_filename field in the *last* one will be set (to the
+ name of the file). */
- if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0)
+ if (msgchain)
{
- log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error,
- fname, strerror(errno));
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
- }
+ address_item * nextaddr;
- /* Make a C stream out of it. */
+ if (emf_text)
+ fprintf(fp, "%s", CS emf_text);
+ else
+ fprintf(fp,
+ "The following text was generated during the delivery "
+ "attempt%s:\n", (filecount > 1)? "s" : "");
- if (!(message_log = fdopen(fd, "a")))
- {
- log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s",
- fname, strerror(errno));
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
- }
- }
+ for (address_item * addr = msgchain; addr; addr = nextaddr)
+ {
+ FILE *fm;
+ address_item *topaddr = addr;
+ /* List all the addresses that relate to this file */
-/* If asked to give up on a message, log who did it, and set the action for all
-the addresses. */
+ fputc('\n', fp);
+ while(addr) /* Insurance */
+ {
+ print_address_information(addr, fp, US"------ ", US"\n ",
+ US" ------\n");
+ if (addr->return_filename) break;
+ addr = addr->next;
+ }
+ fputc('\n', fp);
-if (give_up)
- {
- struct passwd *pw = getpwuid(real_uid);
- log_write(0, LOG_MAIN, "cancelled by %s",
- pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid));
- process_recipients = RECIP_FAIL;
- }
+ /* Now copy the file */
-/* Otherwise, if there are too many Received: headers, fail all recipients. */
+ if (!(fm = Ufopen(addr->return_filename, "rb")))
+ fprintf(fp, " +++ Exim error... failed to open text file: %s\n",
+ strerror(errno));
+ else
+ {
+ while ((ch = fgetc(fm)) != EOF) fputc(ch, fp);
+ (void)fclose(fm);
+ }
+ Uunlink(addr->return_filename);
-else if (received_count > received_headers_max)
- process_recipients = RECIP_FAIL_LOOP;
+ /* Can now add to handled chain, first fishing off the next
+ address on the msgchain. */
-/* Otherwise, if a system-wide, address-independent message filter is
-specified, run it now, except in the case when we are failing all recipients as
-a result of timeout_frozen_after. If the system filter yields "delivered", then
-ignore the true recipients of the message. Failure of the filter file is
-logged, and the delivery attempt fails. */
+ nextaddr = addr->next;
+ addr->next = handled_addr;
+ handled_addr = topaddr;
+ }
+ fputc('\n', fp);
+ }
-else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT)
- {
- int rc;
- int filtertype;
- ugid_block ugid;
- redirect_block redirect;
+ /* output machine readable part */
+#ifdef SUPPORT_I18N
+ if (message_smtputf8)
+ fprintf(fp, "--%s\n"
+ "Content-type: message/global-delivery-status\n\n"
+ "Reporting-MTA: dns; %s\n",
+ bound, smtp_active_hostname);
+ else
+#endif
+ fprintf(fp, "--%s\n"
+ "Content-type: message/delivery-status\n\n"
+ "Reporting-MTA: dns; %s\n",
+ bound, smtp_active_hostname);
- if (system_filter_uid_set)
+ if (dsn_envid)
{
- ugid.uid = system_filter_uid;
- ugid.gid = system_filter_gid;
- ugid.uid_set = ugid.gid_set = TRUE;
+ /* must be decoded from xtext: see RFC 3461:6.3a */
+ uschar * xdec_envid;
+ if (xtextdecode(dsn_envid, &xdec_envid) > 0)
+ fprintf(fp, "Original-Envelope-ID: %s\n", dsn_envid);
+ else
+ fprintf(fp, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
}
- else
+ fputc('\n', fp);
+
+ for (address_item * addr = handled_addr; addr; addr = addr->next)
{
- ugid.uid_set = ugid.gid_set = FALSE;
+ host_item * hu;
+#ifdef EXPERIMENTAL_DSN_INFO
+ const uschar * s;
+#endif
+
+ print_dsn_addr_action(fp, addr, US"failed", US"5.0.0");
+
+ if ((hu = addr->host_used) && hu->name)
+ {
+ fprintf(fp, "Remote-MTA: dns; %s\n", hu->name);
+#ifdef EXPERIMENTAL_DSN_INFO
+ if (hu->address)
+ {
+ uschar * p = hu->port == 25
+ ? US"" : string_sprintf(":%d", hu->port);
+ fprintf(fp, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p);
+ }
+ if ((s = addr->smtp_greeting) && *s)
+ dsn_put_wrapped(fp, US"X-Remote-MTA-smtp-greeting: X-str; ", s);
+ if ((s = addr->helo_response) && *s)
+ dsn_put_wrapped(fp, US"X-Remote-MTA-helo-response: X-str; ", s);
+ if (testflag(addr, af_pass_message) && (s = addr->message) && *s)
+ dsn_put_wrapped(fp, US"X-Exim-Diagnostic: X-str; ", s);
+#endif
+ print_dsn_diagnostic_code(addr, fp);
+ }
+#ifdef EXPERIMENTAL_DSN_INFO
+ else if (testflag(addr, af_pass_message) && (s = addr->message) && *s)
+ dsn_put_wrapped(fp, US"X-Exim-Diagnostic: X-str; ", s);
+#endif
+ fputc('\n', fp);
}
- return_path = sender_address;
- enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */
- system_filtering = TRUE;
+ /* Now copy the message, trying to give an intelligible comment if
+ it is too long for it all to be copied. The limit isn't strictly
+ applied because of the buffering. There is, however, an option
+ to suppress copying altogether. */
- /* Any error in the filter file causes a delivery to be abandoned. */
+ emf_text = next_emf(emf, US"copy");
- redirect.string = system_filter;
- redirect.isfile = TRUE;
- redirect.check_owner = redirect.check_group = FALSE;
- redirect.owners = NULL;
- redirect.owngroups = NULL;
- redirect.pw = NULL;
- redirect.modemask = 0;
+ /* add message body
+ we ignore the intro text from template and add
+ the text for bounce_return_size_limit at the end.
- DEBUG(D_deliver|D_filter) debug_printf("running system filter\n");
+ bounce_return_message is ignored
+ in case RET= is defined we honor these values
+ otherwise bounce_return_body is honored.
- rc = rda_interpret(
- &redirect, /* Where the data is */
- RDO_DEFER | /* Turn on all the enabling options */
- RDO_FAIL | /* Leave off all the disabling options */
- RDO_FILTER |
- RDO_FREEZE |
- RDO_REALLOG |
- RDO_REWRITE,
- NULL, /* No :include: restriction (not used in filter) */
- NULL, /* No sieve vacation directory (not sieve!) */
- NULL, /* No sieve enotify mailto owner (not sieve!) */
- NULL, /* No sieve user address (not sieve!) */
- NULL, /* No sieve subaddress (not sieve!) */
- &ugid, /* uid/gid data */
- &addr_new, /* Where to hang generated addresses */
- &filter_message, /* Where to put error message */
- NULL, /* Don't skip syntax errors */
- &filtertype, /* Will always be set to FILTER_EXIM for this call */
- US"system filter"); /* For error messages */
+ bounce_return_size_limit is always honored.
+ */
- DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc);
+ fprintf(fp, "--%s\n", bound);
- if (rc == FF_ERROR || rc == FF_NONEXIST)
+ dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned";
+ dsnnotifyhdr = NULL;
+ topt = topt_add_return_path;
+
+ /* RET=HDRS? top priority */
+ if (dsn_ret == dsn_ret_hdrs)
+ topt |= topt_no_body;
+ else
{
- (void)close(deliver_datafile);
- deliver_datafile = -1;
- log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s",
- string_printing(filter_message));
- return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ struct stat statbuf;
+
+ /* no full body return at all? */
+ if (!bounce_return_body)
+ {
+ topt |= topt_no_body;
+ /* add header if we overrule RET=FULL */
+ if (dsn_ret == dsn_ret_full)
+ dsnnotifyhdr = dsnlimitmsg;
+ }
+ /* line length limited... return headers only if oversize */
+ /* size limited ... return headers only if limit reached */
+ else if ( max_received_linelength > bounce_return_linesize_limit
+ || ( bounce_return_size_limit > 0
+ && fstat(deliver_datafile, &statbuf) == 0
+ && statbuf.st_size > max
+ ) )
+ {
+ topt |= topt_no_body;
+ dsnnotifyhdr = dsnlimitmsg;
+ }
}
- /* Reset things. If the filter message is an empty string, which can happen
- for a filter "fail" or "freeze" command with no text, reset it to NULL. */
+#ifdef SUPPORT_I18N
+ if (message_smtputf8)
+ fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n"
+ : "Content-type: message/global\n\n",
+ fp);
+ else
+#endif
+ fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n"
+ : "Content-type: message/rfc822\n\n",
+ fp);
- system_filtering = FALSE;
- enable_dollar_recipients = FALSE;
- if (filter_message && filter_message[0] == 0) filter_message = NULL;
+ fflush(fp);
+ transport_filter_argv = NULL; /* Just in case */
+ return_path = sender_address; /* In case not previously set */
+ { /* Dummy transport for headers add */
+ transport_ctx tctx = {{0}};
+ transport_instance tb = {0};
- /* Save the values of the system filter variables so that user filters
- can use them. */
+ tctx.u.fd = fileno(fp);
+ tctx.tblock = &tb;
+ tctx.options = topt | topt_truncate_headers;
+ tb.add_headers = dsnnotifyhdr;
- memcpy(filter_sn, filter_n, sizeof(filter_sn));
+ /*XXX no checking for failure! buggy! */
+ transport_write_message(&tctx, 0);
+ }
+ fflush(fp);
- /* The filter can request that delivery of the original addresses be
- deferred. */
+ /* we never add the final text. close the file */
+ if (emf)
+ (void)fclose(emf);
- if (rc == FF_DEFER)
+ fprintf(fp, "\n--%s--\n", bound);
+
+ /* Close the file, which should send an EOF to the child process
+ that is receiving the message. Wait for it to finish. */
+
+ (void)fclose(fp);
+ rc = child_close(pid, 0); /* Waits for child to close, no timeout */
+
+ /* If the process failed, there was some disaster in setting up the
+ error message. Unless the message is very old, ensure that addr_defer
+ is non-null, which will have the effect of leaving the message on the
+ spool. The failed addresses will get tried again next time. However, we
+ don't really want this to happen too often, so freeze the message unless
+ there are some genuine deferred addresses to try. To do this we have
+ to call spool_write_header() here, because with no genuine deferred
+ addresses the normal code below doesn't get run. */
+
+ if (rc != 0)
{
- process_recipients = RECIP_DEFER;
- deliver_msglog("Delivery deferred by system filter\n");
- log_write(0, LOG_MAIN, "Delivery deferred by system filter");
+ uschar * s = US"";
+ if (now - received_time.tv_sec < retry_maximum_timeout && !addr_defer)
+ {
+ addr_defer = (address_item *)(+1);
+ f.deliver_freeze = TRUE;
+ deliver_frozen_at = time(NULL);
+ /* Panic-dies on error */
+ (void)spool_write_header(message_id, SW_DELIVERING, NULL);
+ s = US" (frozen)";
+ }
+ deliver_msglog("Process failed (%d) when writing error message "
+ "to %s%s", rc, bounce_recipient, s);
+ log_write(0, LOG_MAIN, "Process failed (%d) when writing error message "
+ "to %s%s", rc, bounce_recipient, s);
}
- /* The filter can request that a message be frozen, but this does not
- take place if the message has been manually thawed. In that case, we must
- unset "delivered", which is forced by the "freeze" command to make -bF
- work properly. */
+ /* The message succeeded. Ensure that the recipients that failed are
+ now marked finished with on the spool and their parents updated. */
- else if (rc == FF_FREEZE && !deliver_manual_thaw)
+ else
{
- deliver_freeze = TRUE;
- deliver_frozen_at = time(NULL);
- process_recipients = RECIP_DEFER;
- frozen_info = string_sprintf(" by the system filter%s%s",
- filter_message ? US": " : US"",
- filter_message ? filter_message : US"");
+ for (address_item * addr = handled_addr; addr; addr = addr->next)
+ {
+ address_done(addr, logtod);
+ child_done(addr, logtod);
+ }
+ /* Panic-dies on error */
+ (void)spool_write_header(message_id, SW_DELIVERING, NULL);
}
+ }
+}
- /* The filter can request that a message be failed. The error message may be
- quite long - it is sent back to the sender in the bounce - but we don't want
- to fill up the log with repetitions of it. If it starts with << then the text
- between << and >> is written to the log, with the rest left for the bounce
- message. */
+/*************************************************
+* Send a warning message *
+*************************************************/
+/* Return: boolean success */
- else if (rc == FF_FAIL)
- {
- uschar *colon = US"";
- uschar *logmsg = US"";
- int loglen = 0;
+static BOOL
+send_warning_message(const uschar * recipients, int queue_time, int show_time)
+{
+int fd;
+pid_t pid = child_open_exim(&fd, US"delay-warning-message");
+FILE * wmf = NULL, * f = fdopen(fd, "wb");
+uschar * wmf_text, * bound;
+transport_ctx tctx = {{0}};
+
+
+if (pid <= 0) return FALSE;
+
+GET_OPTION("warn_message_file");
+if (warn_message_file)
+ wmf = expand_open(warn_message_file,
+ US"warn_message_file", US"warning");
+
+warnmsg_recipients = recipients;
+warnmsg_delay = queue_time < 120*60
+ ? string_sprintf("%d minutes", show_time/60)
+ : string_sprintf("%d hours", show_time/3600);
+
+if (errors_reply_to)
+ fprintf(f, "Reply-To: %s\n", errors_reply_to);
+fprintf(f, "Auto-Submitted: auto-replied\n");
+moan_write_from(f);
+fprintf(f, "To: %s\n", recipients);
+moan_write_references(f, NULL);
+
+/* generated boundary string and output MIME-Headers */
+bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
+
+fprintf(f, "Content-Type: multipart/report;"
+ " report-type=delivery-status; boundary=%s\n"
+ "MIME-Version: 1.0\n",
+ bound);
+
+if ((wmf_text = next_emf(wmf, US"header")))
+ fprintf(f, "%s\n", wmf_text);
+else
+ fprintf(f, "Subject: Warning: message %s delayed %s\n\n",
+ message_id, warnmsg_delay);
- process_recipients = RECIP_FAIL_FILTER;
+/* output human readable part as text/plain section */
+fprintf(f, "--%s\n"
+ "Content-type: text/plain; charset=us-ascii\n\n",
+ bound);
- if (filter_message)
- {
- uschar *logend;
- colon = US": ";
- if ( filter_message[0] == '<'
- && filter_message[1] == '<'
- && (logend = Ustrstr(filter_message, ">>"))
- )
- {
- logmsg = filter_message + 2;
- loglen = logend - logmsg;
- filter_message = logend + 2;
- if (filter_message[0] == 0) filter_message = NULL;
- }
- else
- {
- logmsg = filter_message;
- loglen = Ustrlen(filter_message);
- }
- }
+if ((wmf_text = next_emf(wmf, US"intro")))
+ fprintf(f, "%s", CS wmf_text);
+else
+ {
+ fprintf(f,
+"This message was created automatically by mail delivery software.\n");
- log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen,
- logmsg);
- }
+ if (Ustrcmp(recipients, sender_address) == 0)
+ fprintf(f,
+"A message that you sent has not yet been delivered to one or more of its\n"
+"recipients after more than ");
- /* Delivery can be restricted only to those recipients (if any) that the
- filter specified. */
+ else
+ fprintf(f,
+"A message sent by\n\n <%s>\n\n"
+"has not yet been delivered to one or more of its recipients after more than \n",
+ sender_address);
+
+ fprintf(f, "%s on the queue on %s.\n\n"
+ "The message identifier is: %s\n",
+ warnmsg_delay, primary_hostname, message_id);
+
+ for (header_line * h = header_list; h; h = h->next)
+ if (strncmpic(h->text, US"Subject:", 8) == 0)
+ fprintf(f, "The subject of the message is: %s", h->text + 9);
+ else if (strncmpic(h->text, US"Date:", 5) == 0)
+ fprintf(f, "The date of the message is: %s", h->text + 6);
+ fputc('\n', f);
+
+ fprintf(f, "The address%s to which the message has not yet been "
+ "delivered %s:\n",
+ !addr_defer->next ? "" : "es",
+ !addr_defer->next ? "is": "are");
+ }
- else if (rc == FF_DELIVERED)
+/* List the addresses, with error information if allowed */
+
+fputc('\n', f);
+for (address_item * addr = addr_defer; addr; addr = addr->next)
+ {
+ if (print_address_information(addr, f, US" ", US"\n ", US""))
+ print_address_error(addr, f, US"Delay reason: ");
+ fputc('\n', f);
+ }
+fputc('\n', f);
+
+/* Final text */
+
+if (wmf)
+ {
+ if ((wmf_text = next_emf(wmf, US"final")))
+ fprintf(f, "%s", CS wmf_text);
+ (void)fclose(wmf);
+ }
+else
+ {
+ fprintf(f,
+"No action is required on your part. Delivery attempts will continue for\n"
+"some time, and this warning may be repeated at intervals if the message\n"
+"remains undelivered. Eventually the mail delivery software will give up,\n"
+"and when that happens, the message will be returned to you.\n");
+ }
+
+/* output machine readable part */
+fprintf(f, "\n--%s\n"
+ "Content-type: message/delivery-status\n\n"
+ "Reporting-MTA: dns; %s\n",
+ bound,
+ smtp_active_hostname);
+
+
+if (dsn_envid)
+ {
+ /* must be decoded from xtext: see RFC 3461:6.3a */
+ uschar *xdec_envid;
+ if (xtextdecode(dsn_envid, &xdec_envid) > 0)
+ fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid);
+ else
+ fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
+ }
+fputc('\n', f);
+
+for (address_item * addr = addr_defer; addr; addr = addr->next)
+ {
+ host_item * hu;
+
+ print_dsn_addr_action(f, addr, US"delayed", US"4.0.0");
+
+ if ((hu = addr->host_used) && hu->name)
{
- process_recipients = RECIP_IGNORE;
- if (addr_new)
- log_write(0, LOG_MAIN, "original recipients ignored (system filter)");
- else
- log_write(0, LOG_MAIN, "=> discarded (system filter)");
+ fprintf(f, "Remote-MTA: dns; %s\n", hu->name);
+ print_dsn_diagnostic_code(addr, f);
}
+ fputc('\n', f);
+ }
- /* If any new addresses were created by the filter, fake up a "parent"
- for them. This is necessary for pipes, etc., which are expected to have
- parents, and it also gives some sensible logging for others. Allow
- pipes, files, and autoreplies, and run them as the filter uid if set,
- otherwise as the current uid. */
+fprintf(f, "--%s\n"
+ "Content-type: text/rfc822-headers\n\n",
+ bound);
- if (addr_new)
- {
- int uid = (system_filter_uid_set)? system_filter_uid : geteuid();
- int gid = (system_filter_gid_set)? system_filter_gid : getegid();
+fflush(f);
+/* header only as required by RFC. only failure DSN needs to honor RET=FULL */
+tctx.u.fd = fileno(f);
+tctx.options = topt_add_return_path | topt_truncate_headers | topt_no_body;
+transport_filter_argv = NULL; /* Just in case */
+return_path = sender_address; /* In case not previously set */
- /* The text "system-filter" is tested in transport_set_up_command() and in
- set_up_shell_command() in the pipe transport, to enable them to permit
- $recipients, so don't change it here without also changing it there. */
+/* Write the original email out */
+/*XXX no checking for failure! buggy! */
+transport_write_message(&tctx, 0);
+fflush(f);
- address_item *p = addr_new;
- address_item *parent = deliver_make_addr(US"system-filter", FALSE);
+fprintf(f,"\n--%s--\n", bound);
- parent->domain = string_copylc(qualify_domain_recipient);
- parent->local_part = US"system-filter";
+fflush(f);
- /* As part of this loop, we arrange for addr_last to end up pointing
- at the final address. This is used if we go on to add addresses for the
- original recipients. */
+/* Close and wait for child process to complete, without a timeout.
+If there's an error, don't update the count. */
- while (p)
- {
- if (parent->child_count == SHRT_MAX)
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more "
- "than %d delivery addresses", SHRT_MAX);
- parent->child_count++;
- p->parent = parent;
+(void)fclose(f);
+return child_close(pid, 0) == 0;
+}
- if (testflag(p, af_pfr))
- {
- uschar *tpname;
- uschar *type;
- p->uid = uid;
- p->gid = gid;
- setflag(p, af_uid_set |
- af_gid_set |
- af_allow_file |
- af_allow_pipe |
- af_allow_reply);
+/*************************************************
+* Send a success-DSN *
+*************************************************/
- /* Find the name of the system filter's appropriate pfr transport */
+static void
+maybe_send_dsn(const address_item * const addr_succeed)
+{
+address_item * addr_senddsn = NULL;
- if (p->address[0] == '|')
- {
- type = US"pipe";
- tpname = system_filter_pipe_transport;
- address_pipe = p->address;
- }
- else if (p->address[0] == '>')
- {
- type = US"reply";
- tpname = system_filter_reply_transport;
- }
- else
- {
- if (p->address[Ustrlen(p->address)-1] == '/')
- {
- type = US"directory";
- tpname = system_filter_directory_transport;
- }
- else
- {
- type = US"file";
- tpname = system_filter_file_transport;
- }
- address_file = p->address;
- }
-
- /* Now find the actual transport, first expanding the name. We have
- set address_file or address_pipe above. */
-
- if (tpname)
- {
- uschar *tmp = expand_string(tpname);
- address_file = address_pipe = NULL;
- if (!tmp)
- p->message = string_sprintf("failed to expand \"%s\" as a "
- "system filter transport name", tpname);
- tpname = tmp;
- }
- else
- p->message = string_sprintf("system_filter_%s_transport is unset",
- type);
+for (const address_item * a = addr_succeed; a; a = a->next)
+ {
+ /* af_ignore_error not honored here. it's not an error */
+ DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n"
+ "DSN: processing successful delivery address: %s\n"
+ "DSN: Sender_address: %s\n"
+ "DSN: orcpt: %s flags: 0x%x\n"
+ "DSN: envid: %s ret: %d\n"
+ "DSN: Final recipient: %s\n"
+ "DSN: Remote SMTP server supports DSN: %d\n",
+ a->router ? a->router->drinst.name : US"(unknown)",
+ a->address,
+ sender_address,
+ a->dsn_orcpt ? a->dsn_orcpt : US"NULL",
+ a->dsn_flags,
+ dsn_envid ? dsn_envid : US"NULL", dsn_ret,
+ a->address,
+ a->dsn_aware
+ );
- if (tpname)
- {
- transport_instance *tp;
- for (tp = transports; tp; tp = tp->next)
- if (Ustrcmp(tp->name, tpname) == 0)
- {
- p->transport = tp;
- break;
- }
- if (!tp)
- p->message = string_sprintf("failed to find \"%s\" transport "
- "for system filter delivery", tpname);
- }
+ /* send report if next hop not DSN aware or a router flagged "last DSN hop"
+ and a report was requested */
- /* If we couldn't set up a transport, defer the delivery, putting the
- error on the panic log as well as the main log. */
+ if ( (a->dsn_aware != dsn_support_yes || a->dsn_flags & rf_dsnlasthop)
+ && a->dsn_flags & rf_notify_success
+ )
+ {
+ /* copy and relink address_item and send report with all of them at once later */
+ address_item * addr_next = addr_senddsn;
+ addr_senddsn = store_get(sizeof(address_item), GET_UNTAINTED);
+ *addr_senddsn = *a;
+ addr_senddsn->next = addr_next;
+ }
+ else
+ DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n");
+ }
- if (!p->transport)
- {
- address_item *badp = p;
- p = p->next;
- if (!addr_last) addr_new = p; else addr_last->next = p;
- badp->local_part = badp->address; /* Needed for log line */
- post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, DTYPE_ROUTER, 0);
- continue;
- }
- } /* End of pfr handling */
+if (addr_senddsn)
+ { /* create exim process to send message */
+ int fd;
+ pid_t pid = child_open_exim(&fd, US"DSN");
- /* Either a non-pfr delivery, or we found a transport */
+ DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %ld\n", (long)pid);
- DEBUG(D_deliver|D_filter)
- debug_printf("system filter added %s\n", p->address);
+ if (pid < 0) /* Creation of child failed */
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %ld (parent %ld) failed to "
+ "create child process to send success-dsn message: %s",
+ (long)getpid(), (long)getppid(), strerror(errno));
- addr_last = p;
- p = p->next;
- } /* Loop through all addr_new addresses */
+ DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n");
}
- }
-
+ else /* Creation of child succeeded */
+ {
+ FILE * f = fdopen(fd, "wb");
+ /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
+ uschar * bound;
+ transport_ctx tctx = {{0}};
-/* Scan the recipients list, and for every one that is not in the non-
-recipients tree, add an addr item to the chain of new addresses. If the pno
-value is non-negative, we must set the onetime parent from it. This which
-points to the relevant entry in the recipients list.
+ DEBUG(D_deliver)
+ debug_printf("sending success-dsn to: %s\n", sender_address);
-This processing can be altered by the setting of the process_recipients
-variable, which is changed if recipients are to be ignored, failed, or
-deferred. This can happen as a result of system filter activity, or if the -Mg
-option is used to fail all of them.
+ /* build unique id for MIME boundary */
+ bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
+ DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound);
-Duplicate addresses are handled later by a different tree structure; we can't
-just extend the non-recipients tree, because that will be re-written to the
-spool if the message is deferred, and in any case there are casing
-complications for local addresses. */
+ if (errors_reply_to)
+ fprintf(f, "Reply-To: %s\n", errors_reply_to);
-if (process_recipients != RECIP_IGNORE)
- {
- for (i = 0; i < recipients_count; i++)
- {
- if (!tree_search(tree_nonrecipients, recipients_list[i].address))
- {
- recipient_item *r = recipients_list + i;
- address_item *new = deliver_make_addr(r->address, FALSE);
- new->prop.errors_address = r->errors_to;
-#ifdef SUPPORT_I18N
- if ((new->prop.utf8_msg = message_smtputf8))
- {
- new->prop.utf8_downcvt = message_utf8_downconvert == 1;
- new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1;
- DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n",
- new->prop.utf8_downcvt ? "yes"
- : new->prop.utf8_downcvt_maybe ? "ifneeded"
- : "no");
- }
-#endif
+ moan_write_from(f);
+ fprintf(f, "Auto-Submitted: auto-generated\n"
+ "To: %s\n"
+ "Subject: Delivery Status Notification\n",
+ sender_address);
+ moan_write_references(f, NULL);
+ fprintf(f, "Content-Type: multipart/report;"
+ " report-type=delivery-status; boundary=%s\n"
+ "MIME-Version: 1.0\n\n"
- if (r->pno >= 0)
- new->onetime_parent = recipients_list[r->pno].address;
+ "--%s\n"
+ "Content-type: text/plain; charset=us-ascii\n\n"
- /* If DSN support is enabled, set the dsn flags and the original receipt
- to be passed on to other DSN enabled MTAs */
- new->dsn_flags = r->dsn_flags & rf_dsnflags;
- new->dsn_orcpt = r->orcpt;
- DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: %d\n",
- new->dsn_orcpt, new->dsn_flags);
+ "This message was created automatically by mail delivery software.\n"
+ " ----- The following addresses had successful delivery notifications -----\n",
+ bound, bound);
- switch (process_recipients)
- {
- /* RECIP_DEFER is set when a system filter freezes a message. */
+ for (address_item * a = addr_senddsn; a; a = a->next)
+ fprintf(f, "<%s> (relayed %s)\n\n",
+ a->address,
+ a->dsn_flags & rf_dsnlasthop ? "via non DSN router"
+ : a->dsn_aware == dsn_support_no ? "to non-DSN-aware mailer"
+ : "via non \"Remote SMTP\" router"
+ );
- case RECIP_DEFER:
- new->next = addr_defer;
- addr_defer = new;
- break;
+ fprintf(f, "--%s\n"
+ "Content-type: message/delivery-status\n\n"
+ "Reporting-MTA: dns; %s\n",
+ bound, smtp_active_hostname);
+ if (dsn_envid)
+ { /* must be decoded from xtext: see RFC 3461:6.3a */
+ uschar * xdec_envid;
+ if (xtextdecode(dsn_envid, &xdec_envid) > 0)
+ fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
+ else
+ fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
+ }
+ fputc('\n', f);
- /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
- command. */
+ for (address_item * a = addr_senddsn; a; a = a->next)
+ {
+ host_item * hu;
- case RECIP_FAIL_FILTER:
- new->message =
- filter_message ? filter_message : US"delivery cancelled";
- setflag(new, af_pass_message);
- goto RECIP_QUEUE_FAILED; /* below */
+ print_dsn_addr_action(f, a, US"delivered", US"2.0.0");
+ if ((hu = a->host_used) && hu->name)
+ fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n",
+ hu->name);
+ else
+ fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n",
+ a->dsn_flags & rf_dsnlasthop ? "DSN" : "SMTP");
+ }
- /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older
- than the value in timeout_frozen_after. Treat non-bounce messages
- similarly to -Mg; for bounce messages we just want to discard, so
- don't put the address on the failed list. The timeout has already
- been logged. */
+ fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound);
- case RECIP_FAIL_TIMEOUT:
- new->message = US"delivery cancelled; message timed out";
- goto RECIP_QUEUE_FAILED; /* below */
+ fflush(f);
+ transport_filter_argv = NULL; /* Just in case */
+ return_path = sender_address; /* In case not previously set */
+ /* Write the original email out */
- /* RECIP_FAIL is set when -Mg has been used. */
+ tctx.u.fd = fd;
+ tctx.options = topt_add_return_path | topt_truncate_headers | topt_no_body;
+ /*XXX hmm, FALSE(fail) retval ignored.
+ Could error for any number of reasons, and they are not handled. */
+ transport_write_message(&tctx, 0);
+ fflush(f);
- case RECIP_FAIL:
- new->message = US"delivery cancelled by administrator";
- /* Fall through */
+ fprintf(f,"\n--%s--\n", bound);
- /* Common code for the failure cases above. If this is not a bounce
- message, put the address on the failed list so that it is used to
- create a bounce. Otherwise do nothing - this just discards the address.
- The incident has already been logged. */
+ fflush(f);
+ fclose(f);
+ (void) child_close(pid, 0); /* Waits for child to close, no timeout */
+ }
+ }
+}
- RECIP_QUEUE_FAILED:
- if (sender_address[0] != 0)
- {
- new->next = addr_failed;
- addr_failed = new;
- }
- break;
+/*************************************************
+* Deliver one message *
+*************************************************/
+/* This is the function which is called when a message is to be delivered. It
+is passed the id of the message. It is possible that the message no longer
+exists, if some other process has delivered it, and it is also possible that
+the message is being worked on by another process, in which case the data file
+will be locked.
- /* RECIP_FAIL_LOOP is set when there are too many Received: headers
- in the message. Process each address as a routing failure; if this
- is a bounce message, it will get frozen. */
+If no delivery is attempted for any of the above reasons, the function returns
+DELIVER_NOT_ATTEMPTED.
- case RECIP_FAIL_LOOP:
- new->message = US"Too many \"Received\" headers - suspected mail loop";
- post_process_one(new, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
- break;
+If the give_up flag is set true, do not attempt any deliveries, but instead
+fail all outstanding addresses and return the message to the sender (or
+whoever).
+A delivery operation has a process all to itself; we never deliver more than
+one message in the same process. Therefore we needn't worry too much about
+store leakage.
+XXX No longer true with new continued-transport ops; cf. goto CONTINUED_ID
- /* Value should be RECIP_ACCEPT; take this as the safe default. */
+Liable to be called as root.
- default:
- if (!addr_new) addr_new = new; else addr_last->next = new;
- addr_last = new;
- break;
- }
+Arguments:
+ id the id of the message to be delivered
+ forced TRUE if delivery was forced by an administrator; this overrides
+ retry delays and causes a delivery to be tried regardless
+ give_up TRUE if an administrator has requested that delivery attempts
+ be abandoned
-#ifndef DISABLE_EVENT
- if (process_recipients != RECIP_ACCEPT)
- {
- uschar * save_local = deliver_localpart;
- const uschar * save_domain = deliver_domain;
+Returns: When the global variable mua_wrapper is FALSE:
+ DELIVER_ATTEMPTED_NORMAL if a delivery attempt was made
+ DELIVER_NOT_ATTEMPTED otherwise (see comment above)
+ When the global variable mua_wrapper is TRUE:
+ DELIVER_MUA_SUCCEEDED if delivery succeeded
+ DELIVER_MUA_FAILED if delivery failed
+ DELIVER_NOT_ATTEMPTED if not attempted (should not occur)
+*/
- deliver_localpart = expand_string(
- string_sprintf("${local_part:%s}", new->address));
- deliver_domain = expand_string(
- string_sprintf("${domain:%s}", new->address));
+int
+deliver_message(const uschar * id, BOOL forced, BOOL give_up)
+{
+int i, rc, final_yield, process_recipients;
+time_t now;
+address_item * addr_last;
+uschar * filter_message, * info;
+open_db dbblock, * dbm_file = NULL;
+extern int acl_where;
- (void) event_raise(event_action,
- US"msg:fail:internal", new->message);
+CONTINUED_ID:
+final_yield = DELIVER_ATTEMPTED_NORMAL;
+now = time(NULL);
+addr_last = NULL;
+filter_message = NULL;
+process_recipients = RECIP_ACCEPT;
- deliver_localpart = save_local;
- deliver_domain = save_domain;
- }
+#ifdef MEASURE_TIMING
+report_time_since(×tamp_startup, US"delivery start"); /* testcase 0022, 2100 */
#endif
- }
- }
- }
-
-DEBUG(D_deliver)
- {
- address_item *p;
- debug_printf("Delivery address list:\n");
- for (p = addr_new; p; p = p->next)
- debug_printf(" %s %s\n", p->address,
- p->onetime_parent ? p->onetime_parent : US"");
- }
-/* Set up the buffers used for copying over the file when delivering. */
+info = queue_run_pid == (pid_t)0
+ ? string_sprintf("delivering %s", id)
+ : string_sprintf("delivering %s (queue run pid %ld)", id, (long)queue_run_pid);
-deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
-deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
+/* If the D_process_info bit is on, set_process_info() will output debugging
+information. If not, we want to show this initial information if D_deliver or
+D_queue_run is set or in verbose mode. */
+set_process_info("%s", info);
+if ( !(debug_selector & D_process_info)
+ && (debug_selector & (D_deliver|D_queue_run|D_v))
+ )
+ debug_printf("%s\n", info);
-/* Until there are no more new addresses, handle each one as follows:
+/* Ensure that we catch any subprocesses that are created. Although Exim
+sets SIG_DFL as its initial default, some routes through the code end up
+here with it set to SIG_IGN - cases where a non-synchronous delivery process
+has been forked, but no re-exec has been done. We use sigaction rather than
+plain signal() on those OS where SA_NOCLDWAIT exists, because we want to be
+sure it is turned off. (There was a problem on AIX with this.) */
- . If this is a generated address (indicated by the presence of a parent
- pointer) then check to see whether it is a pipe, file, or autoreply, and
- if so, handle it directly here. The router that produced the address will
- have set the allow flags into the address, and also set the uid/gid required.
- Having the routers generate new addresses and then checking them here at
- the outer level is tidier than making each router do the checking, and
- means that routers don't need access to the failed address queue.
+#ifdef SA_NOCLDWAIT
+ {
+ struct sigaction act;
+ act.sa_handler = SIG_DFL;
+ sigemptyset(&(act.sa_mask));
+ act.sa_flags = 0;
+ sigaction(SIGCHLD, &act, NULL);
+ }
+#else
+signal(SIGCHLD, SIG_DFL);
+#endif
- . Break up the address into local part and domain, and make lowercased
- versions of these strings. We also make unquoted versions of the local part.
+/* Make the forcing flag available for routers and transports, set up the
+global message id field, and initialize the count for returned files and the
+message size. This use of strcpy() is OK because the length id is checked when
+it is obtained from a command line (the -M or -q options), and otherwise it is
+known to be a valid message id. */
- . Handle the percent hack for those domains for which it is valid.
+if (id != message_id)
+ Ustrcpy(message_id, id);
+f.deliver_force = forced;
+return_count = 0;
+message_size = 0;
- . For child addresses, determine if any of the parents have the same address.
- If so, generate a different string for previous delivery checking. Without
- this code, if the address spqr generates spqr via a forward or alias file,
- delivery of the generated spqr stops further attempts at the top level spqr,
- which is not what is wanted - it may have generated other addresses.
+/* Initialize some flags */
- . Check on the retry database to see if routing was previously deferred, but
- only if in a queue run. Addresses that are to be routed are put on the
- addr_route chain. Addresses that are to be deferred are put on the
- addr_defer chain. We do all the checking first, so as not to keep the
- retry database open any longer than necessary.
+update_spool = FALSE;
+remove_journal = TRUE;
- . Now we run the addresses through the routers. A router may put the address
- on either the addr_local or the addr_remote chain for local or remote
- delivery, respectively, or put it on the addr_failed chain if it is
- undeliveable, or it may generate child addresses and put them on the
- addr_new chain, or it may defer an address. All the chain anchors are
- passed as arguments so that the routers can be called for verification
- purposes as well.
+/* Set a known context for any ACLs we call via expansions */
+acl_where = ACL_WHERE_DELIVERY;
- . If new addresses have been generated by the routers, da capo.
-*/
+/* Reset the random number generator, so that if several delivery processes are
+started from a queue runner that has already used random numbers (for sorting),
+they don't all get the same sequence. */
-header_rewritten = FALSE; /* No headers rewritten yet */
-while (addr_new) /* Loop until all addresses dealt with */
- {
- address_item *addr, *parent;
+random_seed = 0;
- /* Failure to open the retry database is treated the same as if it does
- not exist. In both cases, dbm_file is NULL. */
+/* Open and lock the message's data file. Exim locks on this one because the
+header file may get replaced as it is re-written during the delivery process.
+Any failures cause messages to be written to the log, except for missing files
+while queue running - another process probably completed delivery. As part of
+opening the data file, message_subdir gets set. */
- if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE)))
- {
- DEBUG(D_deliver|D_retry|D_route|D_hints_lookup)
- debug_printf("no retry data available\n");
- }
+if ((deliver_datafile = spool_open_datafile(id)) < 0)
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
- /* Scan the current batch of new addresses, to handle pipes, files and
- autoreplies, and determine which others are ready for routing. */
+/* The value of message_size at this point has been set to the data length,
+plus one for the blank line that notionally precedes the data. */
- while (addr_new)
+/* Now read the contents of the header file, which will set up the headers in
+store, and also the list of recipients and the tree of non-recipients and
+assorted flags. It updates message_size. If there is a reading or format error,
+give up; if the message has been around for sufficiently long, remove it. */
+
+ {
+ uschar * spoolname = string_sprintf("%s-H", id);
+ if ((rc = spool_read_header(spoolname, TRUE, TRUE)) != spool_read_OK)
{
- int rc;
- uschar *p;
- tree_node *tnode;
- dbdata_retry *domain_retry_record;
- dbdata_retry *address_retry_record;
+ if (errno == ERRNO_SPOOLFORMAT)
+ {
+ struct stat statbuf;
+ if (Ustat(spool_fname(US"input", message_subdir, spoolname, US""),
+ &statbuf) == 0)
+ log_write(0, LOG_MAIN, "Format error in spool file %s: "
+ "size=" OFF_T_FMT, spoolname, statbuf.st_size);
+ else
+ log_write(0, LOG_MAIN, "Format error in spool file %s", spoolname);
+ }
+ else
+ log_write(0, LOG_MAIN, "Error reading spool file %s: %s", spoolname,
+ strerror(errno));
- addr = addr_new;
- addr_new = addr->next;
+ /* If we managed to read the envelope data, received_time contains the
+ time the message was received. Otherwise, we can calculate it from the
+ message id. */
- DEBUG(D_deliver|D_retry|D_route)
+ if (rc != spool_read_hdrerror)
{
- debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
- debug_printf("Considering: %s\n", addr->address);
+ received_time.tv_sec = received_time.tv_usec = 0;
+ /*III subsec precision?*/
+ for (i = 0; i < MESSAGE_ID_TIME_LEN; i++)
+ received_time.tv_sec = received_time.tv_sec * BASE_62 + tab62[id[i] - '0'];
}
- /* Handle generated address that is a pipe or a file or an autoreply. */
+ /* If we've had this malformed message too long, sling it. */
- if (testflag(addr, af_pfr))
+ if (now - received_time.tv_sec > keep_malformed)
{
- /* If an autoreply in a filter could not generate a syntactically valid
- address, give up forthwith. Set af_ignore_error so that we don't try to
- generate a bounce. */
+ Uunlink(spool_fname(US"msglog", message_subdir, id, US""));
+ Uunlink(spool_fname(US"input", message_subdir, id, US"-D"));
+ Uunlink(spool_fname(US"input", message_subdir, id, US"-H"));
+ Uunlink(spool_fname(US"input", message_subdir, id, US"-J"));
+ log_write(0, LOG_MAIN, "Message removed because older than %s",
+ readconf_printtime(keep_malformed));
+ }
- if (testflag(addr, af_bad_reply))
- {
- addr->basic_errno = ERRNO_BADADDRESS2;
- addr->local_part = addr->address;
- addr->message =
- US"filter autoreply generated syntactically invalid recipient";
- setflag(addr, af_ignore_error);
- (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
- continue; /* with the next new address */
- }
+ (void)close(deliver_datafile);
+ deliver_datafile = -1;
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
+ }
- /* If two different users specify delivery to the same pipe or file or
- autoreply, there should be two different deliveries, so build a unique
- string that incorporates the original address, and use this for
- duplicate testing and recording delivery, and also for retrying. */
+/* The spool header file has been read. Look to see if there is an existing
+journal file for this message. If there is, it means that a previous delivery
+attempt crashed (program or host) before it could update the spool header file.
+Read the list of delivered addresses from the journal and add them to the
+nonrecipients tree. Then update the spool file. We can leave the journal in
+existence, as it will get further successful deliveries added to it in this
+run, and it will be deleted if this function gets to its end successfully.
+Otherwise it might be needed again. */
- addr->unique =
- string_sprintf("%s:%s", addr->address, addr->parent->unique +
- (testflag(addr->parent, af_homonym)? 3:0));
+ {
+ uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
+ FILE * jread;
- addr->address_retry_key = addr->domain_retry_key =
- string_sprintf("T:%s", addr->unique);
+ if ( (journal_fd = Uopen(fname,
+ O_RDWR|O_APPEND | EXIM_CLOEXEC | EXIM_NOFOLLOW, SPOOL_MODE)) >= 0
+ && lseek(journal_fd, 0, SEEK_SET) == 0
+ && (jread = fdopen(journal_fd, "rb"))
+ )
+ {
+ while (Ufgets(big_buffer, big_buffer_size, jread))
+ {
+ int n = Ustrlen(big_buffer);
+ big_buffer[n-1] = 0;
+ tree_add_nonrecipient(big_buffer);
+ DEBUG(D_deliver) debug_printf("Previously delivered address %s taken from "
+ "journal file\n", big_buffer);
+ }
+ rewind(jread);
+ if ((journal_fd = dup(fileno(jread))) < 0)
+ journal_fd = fileno(jread);
+ else
+ (void) fclose(jread); /* Try to not leak the FILE resource */
- /* If a filter file specifies two deliveries to the same pipe or file,
- we want to de-duplicate, but this is probably not wanted for two mail
- commands to the same address, where probably both should be delivered.
- So, we have to invent a different unique string in that case. Just
- keep piling '>' characters on the front. */
+ /* Panic-dies on error */
+ (void)spool_write_header(message_id, SW_DELIVERING, NULL);
+ }
+ else if (errno != ENOENT)
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC, "attempt to open journal for reading gave: "
+ "%s", strerror(errno));
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
- if (addr->address[0] == '>')
- {
- while (tree_search(tree_duplicates, addr->unique))
- addr->unique = string_sprintf(">%s", addr->unique);
- }
+ /* A null recipients list indicates some kind of disaster. */
- else if ((tnode = tree_search(tree_duplicates, addr->unique)))
- {
- DEBUG(D_deliver|D_route)
- debug_printf("%s is a duplicate address: discarded\n", addr->address);
- addr->dupof = tnode->data.ptr;
- addr->next = addr_duplicate;
- addr_duplicate = addr;
- continue;
- }
+ if (!recipients_list)
+ {
+ (void)close(deliver_datafile);
+ deliver_datafile = -1;
+ log_write(0, LOG_MAIN, "Spool error: no recipients for %s", fname);
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
+ }
- DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
- /* Check for previous delivery */
+/* Handle a message that is frozen. There are a number of different things that
+can happen, but in the default situation, unless forced, no delivery is
+attempted. */
- if (tree_search(tree_nonrecipients, addr->unique))
- {
- DEBUG(D_deliver|D_route)
- debug_printf("%s was previously delivered: discarded\n", addr->address);
- child_done(addr, tod_stamp(tod_log));
- continue;
- }
+if (f.deliver_freeze)
+ {
+#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
+ /* Moving to another directory removes the message from Exim's view. Other
+ tools must be used to deal with it. Logging of this action happens in
+ spool_move_message() and its subfunctions. */
- /* Save for checking future duplicates */
+ if ( move_frozen_messages
+ && spool_move_message(id, message_subdir, US"", US"F")
+ )
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+#endif
- tree_add_duplicate(addr->unique, addr);
+ /* For all frozen messages (bounces or not), timeout_frozen_after sets the
+ maximum time to keep messages that are frozen. Thaw if we reach it, with a
+ flag causing all recipients to be failed. The time is the age of the
+ message, not the time since freezing. */
- /* Set local part and domain */
+ if (timeout_frozen_after > 0 && message_age >= timeout_frozen_after)
+ {
+ log_write(0, LOG_MAIN, "cancelled by timeout_frozen_after");
+ process_recipients = RECIP_FAIL_TIMEOUT;
+ }
- addr->local_part = addr->address;
- addr->domain = addr->parent->domain;
+ /* For bounce messages (and others with no sender), thaw if the error message
+ ignore timer is exceeded. The message will be discarded if this delivery
+ fails. */
- /* Ensure that the delivery is permitted. */
+ else if (!*sender_address && message_age >= ignore_bounce_errors_after)
+ log_write(0, LOG_MAIN, "Unfrozen by errmsg timer");
- if (testflag(addr, af_file))
- {
- if (!testflag(addr, af_allow_file))
- {
- addr->basic_errno = ERRNO_FORBIDFILE;
- addr->message = US"delivery to file forbidden";
- (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
- continue; /* with the next new address */
- }
- }
- else if (addr->address[0] == '|')
- {
- if (!testflag(addr, af_allow_pipe))
- {
- addr->basic_errno = ERRNO_FORBIDPIPE;
- addr->message = US"delivery to pipe forbidden";
- (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
- continue; /* with the next new address */
- }
- }
- else if (!testflag(addr, af_allow_reply))
- {
- addr->basic_errno = ERRNO_FORBIDREPLY;
- addr->message = US"autoreply forbidden";
- (void)post_process_one(addr, FAIL, LOG_MAIN, DTYPE_ROUTER, 0);
- continue; /* with the next new address */
- }
+ /* If this is a bounce message, or there's no auto thaw, or we haven't
+ reached the auto thaw time yet, and this delivery is not forced by an admin
+ user, do not attempt delivery of this message. Note that forced is set for
+ continuing messages down the same channel, in order to skip load checking and
+ ignore hold domains, but we don't want unfreezing in that case. */
- /* If the errno field is already set to BADTRANSPORT, it indicates
- failure to expand a transport string, or find the associated transport,
- or an unset transport when one is required. Leave this test till now so
- that the forbid errors are given in preference. */
+ else
+ {
+ if ( ( sender_address[0] == 0
+ || auto_thaw <= 0
+ || now <= deliver_frozen_at + auto_thaw
+ )
+ && ( !forced || !f.deliver_force_thaw
+ || !f.admin_user || continue_hostname
+ ) )
+ {
+ (void)close(deliver_datafile);
+ deliver_datafile = -1;
+ log_write(L_skip_delivery, LOG_MAIN, "Message is frozen");
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
- if (addr->basic_errno == ERRNO_BADTRANSPORT)
- {
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
- continue;
- }
+ /* If delivery was forced (by an admin user), assume a manual thaw.
+ Otherwise it's an auto thaw. */
- /* Treat /dev/null as a special case and abandon the delivery. This
- avoids having to specify a uid on the transport just for this case.
- Arrange for the transport name to be logged as "**bypassed**". */
+ if (forced)
+ {
+ f.deliver_manual_thaw = TRUE;
+ log_write(0, LOG_MAIN, "Unfrozen by forced delivery");
+ }
+ else log_write(0, LOG_MAIN, "Unfrozen by auto-thaw");
+ }
- if (Ustrcmp(addr->address, "/dev/null") == 0)
- {
- uschar *save = addr->transport->name;
- addr->transport->name = US"**bypassed**";
- (void)post_process_one(addr, OK, LOG_MAIN, DTYPE_TRANSPORT, '=');
- addr->transport->name = save;
- continue; /* with the next new address */
- }
+ /* We get here if any of the rules for unfreezing have triggered. */
- /* Pipe, file, or autoreply delivery is to go ahead as a normal local
- delivery. */
+ f.deliver_freeze = FALSE;
+ update_spool = TRUE;
+ }
- DEBUG(D_deliver|D_route)
- debug_printf("queued for %s transport\n", addr->transport->name);
- addr->next = addr_local;
- addr_local = addr;
- continue; /* with the next new address */
- }
- /* Handle normal addresses. First, split up into local part and domain,
- handling the %-hack if necessary. There is the possibility of a defer from
- a lookup in percent_hack_domains. */
+/* Open the message log file if we are using them. This records details of
+deliveries, deferments, and failures for the benefit of the mail administrator.
+The log is not used by exim itself to track the progress of a message; that is
+done by rewriting the header spool file. */
- if ((rc = deliver_split_address(addr)) == DEFER)
- {
- addr->message = US"cannot check percent_hack_domains";
- addr->basic_errno = ERRNO_LISTDEFER;
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
- continue;
- }
+if (message_logs)
+ {
+ uschar * fname = spool_fname(US"msglog", message_subdir, id, US"");
+ uschar * error;
+ int fd;
- /* Check to see if the domain is held. If so, proceed only if the
- delivery was forced by hand. */
+ if ((fd = open_msglog_file(fname, SPOOL_MODE, &error)) < 0)
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't %s message log %s: %s", error,
+ fname, strerror(errno));
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
- deliver_domain = addr->domain; /* set $domain */
- if ( !forced && hold_domains
- && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0,
- &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE,
- NULL)) != FAIL
- )
+ /* Make a stdio stream out of it. */
+
+ if (!(message_log = fdopen(fd, "a")))
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't fdopen message log %s: %s",
+ fname, strerror(errno));
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
+ }
+
+
+/* If asked to give up on a message, log who did it, and set the action for all
+the addresses. */
+
+if (give_up)
+ {
+ struct passwd *pw = getpwuid(real_uid);
+ log_write(0, LOG_MAIN, "cancelled by %s",
+ pw ? US pw->pw_name : string_sprintf("uid %ld", (long int)real_uid));
+ process_recipients = RECIP_FAIL;
+ }
+
+/* Otherwise, if there are too many Received: headers, fail all recipients. */
+
+else if (received_count > received_headers_max)
+ process_recipients = RECIP_FAIL_LOOP;
+
+/* Otherwise, if a system-wide, address-independent message filter is
+specified, run it now, except in the case when we are failing all recipients as
+a result of timeout_frozen_after. If the system filter yields "delivered", then
+ignore the true recipients of the message. Failure of the filter file is
+logged, and the delivery attempt fails. */
+
+else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT)
+ {
+ int rc;
+ int filtertype;
+ ugid_block ugid;
+ redirect_block redirect;
+
+ if (system_filter_uid_set)
+ {
+ ugid.uid = system_filter_uid;
+ ugid.gid = system_filter_gid;
+ ugid.uid_set = ugid.gid_set = TRUE;
+ }
+ else
+ ugid.uid_set = ugid.gid_set = FALSE;
+
+ return_path = sender_address;
+ f.enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */
+ f.system_filtering = TRUE;
+
+ /* Any error in the filter file causes a delivery to be abandoned. */
+
+ GET_OPTION("system_filter");
+ redirect.string = system_filter;
+ redirect.isfile = TRUE;
+ redirect.check_owner = redirect.check_group = FALSE;
+ redirect.owners = NULL;
+ redirect.owngroups = NULL;
+ redirect.pw = NULL;
+ redirect.modemask = 0;
+
+ DEBUG(D_deliver|D_filter) debug_printf("running system filter\n");
+
+ rc = rda_interpret(
+ &redirect, /* Where the data is */
+ RDO_DEFER | /* Turn on all the enabling options */
+ RDO_FAIL | /* Leave off all the disabling options */
+ RDO_FILTER |
+ RDO_FREEZE |
+ RDO_REALLOG |
+ RDO_REWRITE,
+ NULL, /* No :include: restriction (not used in filter) */
+ NULL, /* No sieve info (not sieve!) */
+ &ugid, /* uid/gid data */
+ &addr_new, /* Where to hang generated addresses */
+ &filter_message, /* Where to put error message */
+ NULL, /* Don't skip syntax errors */
+ &filtertype, /* Will always be set to FILTER_EXIM for this call */
+ US"system filter"); /* For error messages */
+
+ DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc);
+
+ if (rc == FF_ERROR || rc == FF_NONEXIST)
+ {
+ (void)close(deliver_datafile);
+ deliver_datafile = -1;
+ log_write(0, LOG_MAIN|LOG_PANIC, "Error in system filter: %s",
+ string_printing(filter_message));
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
+
+ /* Reset things. If the filter message is an empty string, which can happen
+ for a filter "fail" or "freeze" command with no text, reset it to NULL. */
+
+ f.system_filtering = FALSE;
+ f.enable_dollar_recipients = FALSE;
+ if (filter_message && filter_message[0] == 0) filter_message = NULL;
+
+ /* Save the values of the system filter variables so that user filters
+ can use them. */
+
+ memcpy(filter_sn, filter_n, sizeof(filter_sn));
+
+ /* The filter can request that delivery of the original addresses be
+ deferred. */
+
+ if (rc == FF_DEFER)
+ {
+ process_recipients = RECIP_DEFER;
+ deliver_msglog("Delivery deferred by system filter\n");
+ log_write(0, LOG_MAIN, "Delivery deferred by system filter");
+ }
+
+ /* The filter can request that a message be frozen, but this does not
+ take place if the message has been manually thawed. In that case, we must
+ unset "delivered", which is forced by the "freeze" command to make -bF
+ work properly. */
+
+ else if (rc == FF_FREEZE && !f.deliver_manual_thaw)
+ {
+ f.deliver_freeze = TRUE;
+ deliver_frozen_at = time(NULL);
+ process_recipients = RECIP_DEFER;
+ frozen_info = string_sprintf(" by the system filter%s%s",
+ filter_message ? US": " : US"",
+ filter_message ? filter_message : US"");
+ }
+
+ /* The filter can request that a message be failed. The error message may be
+ quite long - it is sent back to the sender in the bounce - but we don't want
+ to fill up the log with repetitions of it. If it starts with << then the text
+ between << and >> is written to the log, with the rest left for the bounce
+ message. */
+
+ else if (rc == FF_FAIL)
+ {
+ uschar *colon = US"";
+ uschar *logmsg = US"";
+ int loglen = 0;
+
+ process_recipients = RECIP_FAIL_FILTER;
+
+ if (filter_message)
{
- if (rc == DEFER)
+ uschar *logend;
+ colon = US": ";
+ if ( filter_message[0] == '<'
+ && filter_message[1] == '<'
+ && (logend = Ustrstr(filter_message, ">>"))
+ )
{
- addr->message = US"hold_domains lookup deferred";
- addr->basic_errno = ERRNO_LISTDEFER;
+ logmsg = filter_message + 2;
+ loglen = logend - logmsg;
+ filter_message = logend + 2;
+ if (filter_message[0] == 0) filter_message = NULL;
}
else
{
- addr->message = US"domain is held";
- addr->basic_errno = ERRNO_HELD;
+ logmsg = filter_message;
+ loglen = Ustrlen(filter_message);
}
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_NONE, 0);
- continue;
}
- /* Now we can check for duplicates and previously delivered addresses. In
- order to do this, we have to generate a "unique" value for each address,
- because there may be identical actual addresses in a line of descendents.
- The "unique" field is initialized to the same value as the "address" field,
- but gets changed here to cope with identically-named descendents. */
+ log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen,
+ logmsg);
+ }
- for (parent = addr->parent; parent; parent = parent->parent)
- if (strcmpic(addr->address, parent->address) == 0) break;
+ /* Delivery can be restricted only to those recipients (if any) that the
+ filter specified. */
- /* If there's an ancestor with the same name, set the homonym flag. This
- influences how deliveries are recorded. Then add a prefix on the front of
- the unique address. We use \n\ where n starts at 0 and increases each time.
- It is unlikely to pass 9, but if it does, it may look odd but will still
- work. This means that siblings or cousins with the same names are treated
- as duplicates, which is what we want. */
+ else if (rc == FF_DELIVERED)
+ {
+ process_recipients = RECIP_IGNORE;
+ if (addr_new)
+ log_write(0, LOG_MAIN, "original recipients ignored (system filter)");
+ else
+ log_write(0, LOG_MAIN, "=> discarded (system filter)");
+ }
- if (parent)
- {
- setflag(addr, af_homonym);
- if (parent->unique[0] != '\\')
- addr->unique = string_sprintf("\\0\\%s", addr->address);
- else
- addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1,
- addr->address);
- }
+ /* If any new addresses were created by the filter, fake up a "parent"
+ for them. This is necessary for pipes, etc., which are expected to have
+ parents, and it also gives some sensible logging for others. Allow
+ pipes, files, and autoreplies, and run them as the filter uid if set,
+ otherwise as the current uid. */
- /* Ensure that the domain in the unique field is lower cased, because
- domains are always handled caselessly. */
+ if (addr_new)
+ {
+ int uid = system_filter_uid_set ? system_filter_uid : geteuid();
+ int gid = system_filter_gid_set ? system_filter_gid : getegid();
- p = Ustrrchr(addr->unique, '@');
- while (*p != 0) { *p = tolower(*p); p++; }
+ /* The text "system-filter" is tested in transport_set_up_command() and in
+ set_up_shell_command() in the pipe transport, to enable them to permit
+ $recipients, so don't change it here without also changing it there. */
- DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
+ address_item *p = addr_new;
+ address_item *parent = deliver_make_addr(US"system-filter", FALSE);
- if (tree_search(tree_nonrecipients, addr->unique))
+ parent->domain = string_copylc(qualify_domain_recipient);
+ parent->local_part = US"system-filter";
+
+ /* As part of this loop, we arrange for addr_last to end up pointing
+ at the final address. This is used if we go on to add addresses for the
+ original recipients. */
+
+ while (p)
{
- DEBUG(D_deliver|D_route)
- debug_printf("%s was previously delivered: discarded\n", addr->unique);
- child_done(addr, tod_stamp(tod_log));
- continue;
- }
+ if (parent->child_count == USHRT_MAX)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "system filter generated more "
+ "than %d delivery addresses", USHRT_MAX);
+ parent->child_count++;
+ p->parent = parent;
- /* Get the routing retry status, saving the two retry keys (with and
- without the local part) for subsequent use. If there is no retry record for
- the standard address routing retry key, we look for the same key with the
- sender attached, because this form is used by the smtp transport after a
- 4xx response to RCPT when address_retry_include_sender is true. */
+ if (testflag(p, af_pfr))
+ {
+ uschar *tpname;
+ uschar *type;
+ p->uid = uid;
+ p->gid = gid;
+ setflag(p, af_uid_set);
+ setflag(p, af_gid_set);
+ setflag(p, af_allow_file);
+ setflag(p, af_allow_pipe);
+ setflag(p, af_allow_reply);
- addr->domain_retry_key = string_sprintf("R:%s", addr->domain);
- addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part,
- addr->domain);
+ /* Find the name of the system filter's appropriate pfr transport */
- if (dbm_file)
+ if (p->address[0] == '|')
+ {
+ type = US"pipe";
+ GET_OPTION("system_filter_pipe_transport");
+ tpname = system_filter_pipe_transport;
+ address_pipe = p->address;
+ }
+ else if (p->address[0] == '>')
+ {
+ type = US"reply";
+ GET_OPTION("system_filter_reply_transport");
+ tpname = system_filter_reply_transport;
+ }
+ else
+ {
+ if (p->address[Ustrlen(p->address)-1] == '/')
+ {
+ type = US"directory";
+ GET_OPTION("system_filter_directory_transport");
+ tpname = system_filter_directory_transport;
+ }
+ else
+ {
+ type = US"file";
+ GET_OPTION("system_filter_file_transport");
+ tpname = system_filter_file_transport;
+ }
+ address_file = p->address;
+ }
+
+ /* Now find the actual transport, first expanding the name. We have
+ set address_file or address_pipe above. */
+
+ if (tpname)
+ {
+ uschar *tmp = expand_string(tpname);
+ address_file = address_pipe = NULL;
+ if (!tmp)
+ p->message = string_sprintf("failed to expand \"%s\" as a "
+ "system filter transport name", tpname);
+ if (is_tainted(tmp))
+ p->message = string_sprintf("attempt to used tainted value '%s' for"
+ "transport '%s' as a system filter", tmp, tpname);
+ tpname = tmp;
+ }
+ else
+ p->message = string_sprintf("system_filter_%s_transport is unset",
+ type);
+
+ if (tpname)
+ {
+ transport_instance *tp;
+ for (tp = transports; tp; tp = tp->drinst.next)
+ if (Ustrcmp(tp->drinst.name, tpname) == 0)
+ { p->transport = tp; break; }
+ if (!tp)
+ p->message = string_sprintf("failed to find \"%s\" transport "
+ "for system filter delivery", tpname);
+ }
+
+ /* If we couldn't set up a transport, defer the delivery, putting the
+ error on the panic log as well as the main log. */
+
+ if (!p->transport)
+ {
+ address_item * badp = p;
+ p = p->next;
+ if (!addr_last) addr_new = p; else addr_last->next = p;
+ badp->local_part = badp->address; /* Needed for log line */
+ post_process_one(badp, DEFER, LOG_MAIN|LOG_PANIC, EXIM_DTYPE_ROUTER, 0);
+ continue;
+ }
+ } /* End of pfr handling */
+
+ /* Either a non-pfr delivery, or we found a transport */
+
+ DEBUG(D_deliver|D_filter)
+ debug_printf("system filter added %s\n", p->address);
+
+ addr_last = p;
+ p = p->next;
+ } /* Loop through all addr_new addresses */
+ }
+ }
+
+
+/* Scan the recipients list, and for every one that is not in the non-
+recipients tree, add an addr item to the chain of new addresses. If the pno
+value is non-negative, we must set the onetime parent from it. This which
+points to the relevant entry in the recipients list.
+
+When running for an ATRN delivery only include addresses for the domains
+to be delivered.
+
+This processing can be altered by the setting of the process_recipients
+variable, which is changed if recipients are to be ignored, failed, or
+deferred. This can happen as a result of system filter activity, or if the -Mg
+option is used to fail all of them.
+
+Duplicate addresses are handled later by a different tree structure; we can't
+just extend the non-recipients tree, because that will be re-written to the
+spool if the message is deferred, and in any case there are casing
+complications for local addresses. */
+
+if (process_recipients != RECIP_IGNORE)
+ for (i = 0; i < recipients_count; i++)
+ {
+ recipient_item * r = recipients_list + i;
+ uschar * s;
+
+ if ( !tree_search(tree_nonrecipients, r->address)
+ && ( !atrn_domains
+ || (s = Ustrrchr(r->address, '@'))
+ && match_isinlist(s+1, &atrn_domains, 0, &domainlist_anchor, NULL,
+ MCL_DOMAIN + MCL_NOEXPAND, TRUE, NULL) == OK
+ ) )
{
- domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key);
- if ( domain_retry_record
- && now - domain_retry_record->time_stamp > retry_data_expire
- )
- domain_retry_record = NULL; /* Ignore if too old */
+ address_item * new = deliver_make_addr(r->address, FALSE);
- address_retry_record = dbfn_read(dbm_file, addr->address_retry_key);
- if ( address_retry_record
- && now - address_retry_record->time_stamp > retry_data_expire
- )
- address_retry_record = NULL; /* Ignore if too old */
+ new->prop.errors_address = r->errors_to;
+#ifdef SUPPORT_I18N
+ if ((new->prop.utf8_msg = message_smtputf8))
+ {
+ new->prop.utf8_downcvt = message_utf8_downconvert == 1;
+ new->prop.utf8_downcvt_maybe = message_utf8_downconvert == -1;
+ DEBUG(D_deliver) debug_printf("utf8, downconvert %s\n",
+ new->prop.utf8_downcvt ? "yes"
+ : new->prop.utf8_downcvt_maybe ? "ifneeded"
+ : "no");
+ }
+#endif
+
+ if (r->pno >= 0)
+ new->onetime_parent = recipients_list[r->pno].address;
+
+ /* If DSN support is enabled, set the dsn flags and the original receipt
+ to be passed on to other DSN enabled MTAs */
+
+ new->dsn_flags = r->dsn_flags & rf_dsnflags;
+ new->dsn_orcpt = r->orcpt;
+ DEBUG(D_deliver) debug_printf("DSN: set orcpt: %s flags: 0x%x\n",
+ new->dsn_orcpt ? new->dsn_orcpt : US"", new->dsn_flags);
- if (!address_retry_record)
+ switch (process_recipients)
{
- uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
- sender_address);
- address_retry_record = dbfn_read(dbm_file, altkey);
- if ( address_retry_record
- && now - address_retry_record->time_stamp > retry_data_expire)
- address_retry_record = NULL; /* Ignore if too old */
- }
- }
- else
- domain_retry_record = address_retry_record = NULL;
+ /* RECIP_DEFER is set when a system filter freezes a message. */
- DEBUG(D_deliver|D_retry)
- {
- if (!domain_retry_record)
- debug_printf("no domain retry record\n");
- if (!address_retry_record)
- debug_printf("no address retry record\n");
- }
+ case RECIP_DEFER:
+ new->next = addr_defer;
+ addr_defer = new;
+ break;
- /* If we are sending a message down an existing SMTP connection, we must
- assume that the message which created the connection managed to route
- an address to that connection. We do not want to run the risk of taking
- a long time over routing here, because if we do, the server at the other
- end of the connection may time it out. This is especially true for messages
- with lots of addresses. For this kind of delivery, queue_running is not
- set, so we would normally route all addresses. We take a pragmatic approach
- and defer routing any addresses that have any kind of domain retry record.
- That is, we don't even look at their retry times. It doesn't matter if this
- doesn't work occasionally. This is all just an optimization, after all.
- The reason for not doing the same for address retries is that they normally
- arise from 4xx responses, not DNS timeouts. */
+ /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
+ command. */
- if (continue_hostname && domain_retry_record)
- {
- addr->message = US"reusing SMTP connection skips previous routing defer";
- addr->basic_errno = ERRNO_RRETRY;
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
- }
+ case RECIP_FAIL_FILTER:
+ new->message =
+ filter_message ? filter_message : US"delivery cancelled";
+ setflag(new, af_pass_message);
+ goto RECIP_QUEUE_FAILED; /* below */
- /* If we are in a queue run, defer routing unless there is no retry data or
- we've passed the next retry time, or this message is forced. In other
- words, ignore retry data when not in a queue run.
- However, if the domain retry time has expired, always allow the routing
- attempt. If it fails again, the address will be failed. This ensures that
- each address is routed at least once, even after long-term routing
- failures.
+ /* RECIP_FAIL_TIMEOUT is set when a message is frozen, but is older
+ than the value in timeout_frozen_after. Treat non-bounce messages
+ similarly to -Mg; for bounce messages we just want to discard, so
+ don't put the address on the failed list. The timeout has already
+ been logged. */
- If there is an address retry, check that too; just wait for the next
- retry time. This helps with the case when the temporary error on the
- address was really message-specific rather than address specific, since
- it allows other messages through.
+ case RECIP_FAIL_TIMEOUT:
+ new->message = US"delivery cancelled; message timed out";
+ goto RECIP_QUEUE_FAILED; /* below */
- We also wait for the next retry time if this is a message sent down an
- existing SMTP connection (even though that will be forced). Otherwise there
- will be far too many attempts for an address that gets a 4xx error. In
- fact, after such an error, we should not get here because, the host should
- not be remembered as one this message needs. However, there was a bug that
- used to cause this to happen, so it is best to be on the safe side.
- Even if we haven't reached the retry time in the hints, there is one more
- check to do, which is for the ultimate address timeout. We only do this
- check if there is an address retry record and there is not a domain retry
- record; this implies that previous attempts to handle the address had the
- retry_use_local_parts option turned on. We use this as an approximation
- for the destination being like a local delivery, for example delivery over
- LMTP to an IMAP message store. In this situation users are liable to bump
- into their quota and thereby have intermittently successful deliveries,
- which keep the retry record fresh, which can lead to us perpetually
- deferring messages. */
+ /* RECIP_FAIL is set when -Mg has been used. */
- else if ( ( queue_running && !deliver_force
- || continue_hostname
- )
- && ( ( domain_retry_record
- && now < domain_retry_record->next_try
- && !domain_retry_record->expired
- )
- || ( address_retry_record
- && now < address_retry_record->next_try
- ) )
- && ( domain_retry_record
- || !address_retry_record
- || !retry_ultimate_address_timeout(addr->address_retry_key,
- addr->domain, address_retry_record, now)
- ) )
- {
- addr->message = US"retry time not reached";
- addr->basic_errno = ERRNO_RRETRY;
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
- }
+ case RECIP_FAIL:
+ new->message = US"delivery cancelled by administrator";
+ /* not setting af_pass_message here means that will not
+ appear in the bounce message */
+ /* Fall through */
- /* The domain is OK for routing. Remember if retry data exists so it
- can be cleaned up after a successful delivery. */
+ /* Common code for the failure cases above. If this is not a bounce
+ message, put the address on the failed list so that it is used to
+ create a bounce. Otherwise do nothing - this just discards the address.
+ The incident has already been logged. */
- else
- {
- if (domain_retry_record || address_retry_record)
- setflag(addr, af_dr_retry_exists);
- addr->next = addr_route;
- addr_route = addr;
- DEBUG(D_deliver|D_route)
- debug_printf("%s: queued for routing\n", addr->address);
- }
- }
+ RECIP_QUEUE_FAILED:
+ if (*sender_address)
+ {
+ new->next = addr_failed;
+ addr_failed = new;
+ }
+ break;
- /* The database is closed while routing is actually happening. Requests to
- update it are put on a chain and all processed together at the end. */
- if (dbm_file) dbfn_close(dbm_file);
+ /* RECIP_FAIL_LOOP is set when there are too many Received: headers
+ in the message. Process each address as a routing failure; if this
+ is a bounce message, it will get frozen. */
- /* If queue_domains is set, we don't even want to try routing addresses in
- those domains. During queue runs, queue_domains is forced to be unset.
- Optimize by skipping this pass through the addresses if nothing is set. */
+ case RECIP_FAIL_LOOP:
+ new->message = US"Too many \"Received\" headers - suspected mail loop";
+ post_process_one(new, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ break;
- if (!deliver_force && queue_domains)
- {
- address_item *okaddr = NULL;
- while (addr_route)
- {
- address_item *addr = addr_route;
- addr_route = addr->next;
- deliver_domain = addr->domain; /* set $domain */
- if ((rc = match_isinlist(addr->domain, (const uschar **)&queue_domains, 0,
- &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
- != OK)
- {
- if (rc == DEFER)
- {
- addr->basic_errno = ERRNO_LISTDEFER;
- addr->message = US"queue_domains lookup deferred";
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
- }
- else
- {
- addr->next = okaddr;
- okaddr = addr;
- }
- }
- else
- {
- addr->basic_errno = ERRNO_QUEUE_DOMAIN;
- addr->message = US"domain is in queue_domains";
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_ROUTER, 0);
+ /* Value should be RECIP_ACCEPT; take this as the safe default. */
+
+ default:
+ if (!addr_new) addr_new = new; else addr_last->next = new;
+ addr_last = new;
+ break;
}
- }
- addr_route = okaddr;
+#ifndef DISABLE_EVENT
+ if (process_recipients != RECIP_ACCEPT && event_action)
+ {
+ const uschar * save_local = deliver_localpart;
+ const uschar * save_domain = deliver_domain;
+ const uschar * addr = new->address;
+ uschar * errmsg = NULL;
+ int start, end, dom;
+
+ if (!parse_extract_address(addr, &errmsg, &start, &end, &dom, TRUE))
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "failed to parse address '%.100s': %s\n", addr, errmsg);
+ else
+ {
+ deliver_localpart =
+ string_copyn(addr+start, dom ? (dom-1) - start : end - start);
+ deliver_domain = dom ? CUS string_copyn(addr+dom, end - dom) : CUS"";
+
+ (void) event_raise(event_action, US"msg:fail:internal", new->message, NULL);
+
+ deliver_localpart = save_local;
+ deliver_domain = save_domain;
+ }
+ }
+#endif
+ }
}
- /* Now route those addresses that are not deferred. */
+DEBUG(D_deliver)
+ {
+ debug_printf("Delivery address list:\n");
+ for (address_item * p = addr_new; p; p = p->next)
+ debug_printf(" %s %s\n", p->address,
+ p->onetime_parent ? p->onetime_parent : US"");
+ }
- while (addr_route)
- {
- int rc;
- address_item *addr = addr_route;
- const uschar *old_domain = addr->domain;
- uschar *old_unique = addr->unique;
- addr_route = addr->next;
- addr->next = NULL;
+/* Set up the buffers used for copying over the file when delivering. */
- /* Just in case some router parameter refers to it. */
+deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
+deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
- if (!(return_path = addr->prop.errors_address))
- return_path = sender_address;
- /* If a router defers an address, add a retry item. Whether or not to
- use the local part in the key is a property of the router. */
- if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new,
- &addr_succeed, v_none)) == DEFER)
- retry_add_item(addr,
- addr->router->retry_use_local_part
- ? string_sprintf("R:%s@%s", addr->local_part, addr->domain)
- : string_sprintf("R:%s", addr->domain),
- 0);
+/* Until there are no more new addresses, handle each one as follows:
- /* Otherwise, if there is an existing retry record in the database, add
- retry items to delete both forms. We must also allow for the possibility
- of a routing retry that includes the sender address. Since the domain might
- have been rewritten (expanded to fully qualified) as a result of routing,
- ensure that the rewritten form is also deleted. */
+ . If this is a generated address (indicated by the presence of a parent
+ pointer) then check to see whether it is a pipe, file, or autoreply, and
+ if so, handle it directly here. The router that produced the address will
+ have set the allow flags into the address, and also set the uid/gid required.
+ Having the routers generate new addresses and then checking them here at
+ the outer level is tidier than making each router do the checking, and
+ means that routers don't need access to the failed address queue.
- else if (testflag(addr, af_dr_retry_exists))
- {
- uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
- sender_address);
- retry_add_item(addr, altkey, rf_delete);
- retry_add_item(addr, addr->address_retry_key, rf_delete);
- retry_add_item(addr, addr->domain_retry_key, rf_delete);
- if (Ustrcmp(addr->domain, old_domain) != 0)
- retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete);
- }
+ . Break up the address into local part and domain, and make lowercased
+ versions of these strings. We also make unquoted versions of the local part.
- /* DISCARD is given for :blackhole: and "seen finish". The event has been
- logged, but we need to ensure the address (and maybe parents) is marked
- done. */
+ . Handle the percent hack for those domains for which it is valid.
- if (rc == DISCARD)
- {
- address_done(addr, tod_stamp(tod_log));
- continue; /* route next address */
- }
+ . For child addresses, determine if any of the parents have the same address.
+ If so, generate a different string for previous delivery checking. Without
+ this code, if the address spqr generates spqr via a forward or alias file,
+ delivery of the generated spqr stops further attempts at the top level spqr,
+ which is not what is wanted - it may have generated other addresses.
- /* The address is finished with (failed or deferred). */
+ . Check on the retry database to see if routing was previously deferred, but
+ only if in a queue run. Addresses that are to be routed are put on the
+ addr_route chain. Addresses that are to be deferred are put on the
+ addr_defer chain. We do all the checking first, so as not to keep the
+ retry database open any longer than necessary.
- if (rc != OK)
- {
- (void)post_process_one(addr, rc, LOG_MAIN, DTYPE_ROUTER, 0);
- continue; /* route next address */
- }
+ . Now we run the addresses through the routers. A router may put the address
+ on either the addr_local or the addr_remote chain for local or remote
+ delivery, respectively, or put it on the addr_failed chain if it is
+ undeliveable, or it may generate child addresses and put them on the
+ addr_new chain, or it may defer an address. All the chain anchors are
+ passed as arguments so that the routers can be called for verification
+ purposes as well.
- /* The address has been routed. If the router changed the domain, it will
- also have changed the unique address. We have to test whether this address
- has already been delivered, because it's the unique address that finally
- gets recorded. */
+ . If new addresses have been generated by the routers, da capo.
+*/
- if ( addr->unique != old_unique
- && tree_search(tree_nonrecipients, addr->unique) != 0
- )
+f.header_rewritten = FALSE; /* No headers rewritten yet */
+while (addr_new) /* Loop until all addresses dealt with */
+ {
+ address_item * addr, * parent;
+
+ /* Failure to open the retry database is treated the same as if it does
+ not exist. In both cases, dbm_file is NULL. For the first stage of a 2-phase
+ queue run don't bother checking domain- or address-retry info; they will take
+ effect on the second stage. */
+
+ if (!f.queue_2stage)
+ {
+ /* If we have transaction-capable hintsdbs, open the retry db without
+ locking, and leave open for the transport process and for subsequent
+ deliveries. Use a writeable open as we can keep it open all the way through
+ to writing retry records if needed due to message fails.
+ If the open fails, tag that explicitly for the transport but retry the open
+ next time around, in case it was created in the interim.
+ If non-transaction, we are only reading records at this stage and
+ we close the db before running the transport.
+ Either way we do a non-creating open. */
+
+ if (continue_retry_db == (open_db *)-1)
+ continue_retry_db = NULL;
+
+ if (continue_retry_db)
{
- DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: "
- "discarded\n", addr->address);
- if (addr_remote == addr) addr_remote = addr->next;
- else if (addr_local == addr) addr_local = addr->next;
+ DEBUG(D_hints_lookup) debug_printf("using cached retry hintsdb handle\n");
+ dbm_file = continue_retry_db;
}
-
- /* If the router has same_domain_copy_routing set, we are permitted to copy
- the routing for any other addresses with the same domain. This is an
- optimisation to save repeated DNS lookups for "standard" remote domain
- routing. The option is settable only on routers that generate host lists.
- We play it very safe, and do the optimization only if the address is routed
- to a remote transport, there are no header changes, and the domain was not
- modified by the router. */
-
- if ( addr_remote == addr
- && addr->router->same_domain_copy_routing
- && !addr->prop.extra_headers
- && !addr->prop.remove_headers
- && old_domain == addr->domain
- )
+ else if (!exim_lockfile_needed())
{
- address_item **chain = &addr_route;
- while (*chain)
- {
- address_item *addr2 = *chain;
- if (Ustrcmp(addr2->domain, addr->domain) != 0)
- {
- chain = &(addr2->next);
- continue;
- }
+ dbm_file = dbfn_open_multi(US"retry", O_RDWR, &dbblock);
+ continue_retry_db = dbm_file ? dbm_file : (open_db *)-1;
+ }
+ else
+ dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE, TRUE);
- /* Found a suitable address; take it off the routing list and add it to
- the remote delivery list. */
+ if (!dbm_file)
+ DEBUG(D_deliver|D_retry|D_route|D_hints_lookup)
+ debug_printf("no retry data available\n");
+ }
- *chain = addr2->next;
- addr2->next = addr_remote;
- addr_remote = addr2;
+ /* Scan the current batch of new addresses, to handle pipes, files and
+ autoreplies, and determine which others are ready for routing. */
- /* Copy the routing data */
+ while (addr_new)
+ {
+ int rc;
+ tree_node * tnode;
+ dbdata_retry * domain_retry_record = NULL, * address_retry_record = NULL;
- addr2->domain = addr->domain;
- addr2->router = addr->router;
- addr2->transport = addr->transport;
- addr2->host_list = addr->host_list;
- addr2->fallback_hosts = addr->fallback_hosts;
- addr2->prop.errors_address = addr->prop.errors_address;
- copyflag(addr2, addr, af_hide_child | af_local_host_removed);
+ addr = addr_new;
+ addr_new = addr->next;
+
+ DEBUG(D_deliver|D_retry|D_route)
+ {
+ debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
+ debug_printf("Considering: %s\n", addr->address);
+ }
- DEBUG(D_deliver|D_route)
- {
- debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
- "routing %s\n"
- "Routing for %s copied from %s\n",
- addr2->address, addr2->address, addr->address);
- }
+ /* Handle generated address that is a pipe or a file or an autoreply. */
+
+ if (testflag(addr, af_pfr))
+ {
+ /* If an autoreply in a filter could not generate a syntactically valid
+ address, give up forthwith. Set af_ignore_error so that we don't try to
+ generate a bounce. */
+
+ if (testflag(addr, af_bad_reply))
+ {
+ addr->basic_errno = ERRNO_BADADDRESS2;
+ addr->local_part = addr->address;
+ addr->message =
+ US"filter autoreply generated syntactically invalid recipient";
+ addr->prop.ignore_error = TRUE;
+ (void) post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue; /* with the next new address */
}
- }
- } /* Continue with routing the next address. */
- } /* Loop to process any child addresses that the routers created, and
- any rerouted addresses that got put back on the new chain. */
+ /* If two different users specify delivery to the same pipe or file or
+ autoreply, there should be two different deliveries, so build a unique
+ string that incorporates the original address, and use this for
+ duplicate testing and recording delivery, and also for retrying. */
-/* Debugging: show the results of the routing */
+ addr->unique =
+ string_sprintf("%s:%s", addr->address, addr->parent->unique +
+ (testflag(addr->parent, af_homonym) ? 3:0));
-DEBUG(D_deliver|D_retry|D_route)
- {
- address_item *p;
- debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
- debug_printf("After routing:\n Local deliveries:\n");
- for (p = addr_local; p; p = p->next)
- debug_printf(" %s\n", p->address);
+ addr->address_retry_key = addr->domain_retry_key =
+ string_sprintf("T:%s", addr->unique);
- debug_printf(" Remote deliveries:\n");
- for (p = addr_remote; p; p = p->next)
- debug_printf(" %s\n", p->address);
+ /* If a filter file specifies two deliveries to the same pipe or file,
+ we want to de-duplicate, but this is probably not wanted for two mail
+ commands to the same address, where probably both should be delivered.
+ So, we have to invent a different unique string in that case. Just
+ keep piling '>' characters on the front. */
- debug_printf(" Failed addresses:\n");
- for (p = addr_failed; p; p = p->next)
- debug_printf(" %s\n", p->address);
+ if (addr->address[0] == '>')
+ while (tree_search(tree_duplicates, addr->unique))
+ addr->unique = string_sprintf(">%s", addr->unique);
- debug_printf(" Deferred addresses:\n");
- for (p = addr_defer; p; p = p->next)
- debug_printf(" %s\n", p->address);
- }
+ else if ((tnode = tree_search(tree_duplicates, addr->unique)))
+ {
+ DEBUG(D_deliver|D_route)
+ debug_printf("%s is a duplicate address: discarded\n", addr->address);
+ addr->dupof = tnode->data.ptr;
+ addr->next = addr_duplicate;
+ addr_duplicate = addr;
+ continue;
+ }
-/* Free any resources that were cached during routing. */
+ DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
-search_tidyup();
-route_tidyup();
+ /* Check for previous delivery */
-/* These two variables are set only during routing, after check_local_user.
-Ensure they are not set in transports. */
+ if (tree_search(tree_nonrecipients, addr->unique))
+ {
+ DEBUG(D_deliver|D_route)
+ debug_printf("%s was previously delivered: discarded\n", addr->address);
+ child_done(addr, tod_stamp(tod_log));
+ continue;
+ }
-local_user_gid = (gid_t)(-1);
-local_user_uid = (uid_t)(-1);
+ /* Save for checking future duplicates */
-/* Check for any duplicate addresses. This check is delayed until after
-routing, because the flexibility of the routing configuration means that
-identical addresses with different parentage may end up being redirected to
-different addresses. Checking for duplicates too early (as we previously used
-to) makes this kind of thing not work. */
+ tree_add_duplicate(addr->unique, addr);
-do_duplicate_check(&addr_local);
-do_duplicate_check(&addr_remote);
+ /* Set local part and domain */
-/* When acting as an MUA wrapper, we proceed only if all addresses route to a
-remote transport. The check that they all end up in one transaction happens in
-the do_remote_deliveries() function. */
+ addr->local_part = addr->address;
+ addr->domain = addr->parent->domain;
-if ( mua_wrapper
- && (addr_local || addr_failed || addr_defer)
- )
- {
- address_item *addr;
- uschar *which, *colon, *msg;
+ /* Ensure that the delivery is permitted. */
- if (addr_local)
- {
- addr = addr_local;
- which = US"local";
- }
- else if (addr_defer)
- {
- addr = addr_defer;
- which = US"deferred";
- }
- else
- {
- addr = addr_failed;
- which = US"failed";
- }
+ if (testflag(addr, af_file))
+ {
+ if (!testflag(addr, af_allow_file))
+ {
+ addr->basic_errno = ERRNO_FORBIDFILE;
+ addr->message = US"delivery to file forbidden";
+ (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue; /* with the next new address */
+ }
+ }
+ else if (addr->address[0] == '|')
+ {
+ if (!testflag(addr, af_allow_pipe))
+ {
+ addr->basic_errno = ERRNO_FORBIDPIPE;
+ addr->message = US"delivery to pipe forbidden";
+ (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue; /* with the next new address */
+ }
+ }
+ else if (!testflag(addr, af_allow_reply))
+ {
+ addr->basic_errno = ERRNO_FORBIDREPLY;
+ addr->message = US"autoreply forbidden";
+ (void)post_process_one(addr, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue; /* with the next new address */
+ }
- while (addr->parent) addr = addr->parent;
+ /* If the errno field is already set to BADTRANSPORT, it indicates
+ failure to expand a transport string, or find the associated transport,
+ or an unset transport when one is required. Leave this test till now so
+ that the forbid errors are given in preference. */
- if (addr->message)
- {
- colon = US": ";
- msg = addr->message;
- }
- else colon = msg = US"";
+ if (addr->basic_errno == ERRNO_BADTRANSPORT)
+ {
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue;
+ }
- /* We don't need to log here for a forced failure as it will already
- have been logged. Defer will also have been logged, but as a defer, so we do
- need to do the failure logging. */
+ /* Treat /dev/null as a special case and abandon the delivery. This
+ avoids having to specify a uid on the transport just for this case.
+ Arrange for the transport name to be logged as "**bypassed**".
+ Copy the transport for this fairly unusual case rather than having
+ to make all transports mutable. */
- if (addr != addr_failed)
- log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery",
- addr->address, which);
+ if (Ustrcmp(addr->address, "/dev/null") == 0)
+ {
+ transport_instance * save_t = addr->transport;
+ transport_instance * t = store_get(sizeof(*t), save_t);
+ *t = *save_t;
+ t->drinst.name = US"**bypassed**";
+ addr->transport = t;
+ (void)post_process_one(addr, OK, LOG_MAIN, EXIM_DTYPE_TRANSPORT, '=');
+ addr->transport= save_t;
+ continue; /* with the next new address */
+ }
- /* Always write an error to the caller */
+ /* Pipe, file, or autoreply delivery is to go ahead as a normal local
+ delivery. */
- fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address,
- which, colon, msg);
+ DEBUG(D_deliver|D_route)
+ debug_printf("queued for %s transport\n", addr->transport->drinst.name);
+ addr->next = addr_local;
+ addr_local = addr;
+ continue; /* with the next new address */
+ }
- final_yield = DELIVER_MUA_FAILED;
- addr_failed = addr_defer = NULL; /* So that we remove the message */
- goto DELIVERY_TIDYUP;
- }
+ /* Handle normal addresses. First, split up into local part and domain,
+ handling the %-hack if necessary. There is the possibility of a defer from
+ a lookup in percent_hack_domains. */
+ if ((rc = deliver_split_address(addr)) == DEFER)
+ {
+ addr->message = US"cannot check percent_hack_domains";
+ addr->basic_errno = ERRNO_LISTDEFER;
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0);
+ continue;
+ }
-/* If this is a run to continue deliveries to an external channel that is
-already set up, defer any local deliveries. */
+ /* Check to see if the domain is held. If so, proceed only if the
+ delivery was forced by hand. */
-if (continue_transport)
- {
- if (addr_defer)
- {
- address_item *addr = addr_defer;
- while (addr->next) addr = addr->next;
- addr->next = addr_local;
- }
- else
- addr_defer = addr_local;
- addr_local = NULL;
- }
+ deliver_domain = addr->domain; /* set $domain */
+ if ( !forced && hold_domains
+ && (rc = match_isinlist(addr->domain, (const uschar **)&hold_domains, 0,
+ &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE,
+ NULL)) != FAIL
+ )
+ {
+ if (rc == DEFER)
+ {
+ addr->message = US"hold_domains lookup deferred";
+ addr->basic_errno = ERRNO_LISTDEFER;
+ }
+ else
+ {
+ addr->message = US"domain is held";
+ addr->basic_errno = ERRNO_HELD;
+ }
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_NONE, 0);
+ continue;
+ }
+ /* Now we can check for duplicates and previously delivered addresses. In
+ order to do this, we have to generate a "unique" value for each address,
+ because there may be identical actual addresses in a line of descendents.
+ The "unique" field is initialized to the same value as the "address" field,
+ but gets changed here to cope with identically-named descendents. */
-/* Because address rewriting can happen in the routers, we should not really do
-ANY deliveries until all addresses have been routed, so that all recipients of
-the message get the same headers. However, this is in practice not always
-possible, since sometimes remote addresses give DNS timeouts for days on end.
-The pragmatic approach is to deliver what we can now, saving any rewritten
-headers so that at least the next lot of recipients benefit from the rewriting
-that has already been done.
+ for (parent = addr->parent; parent; parent = parent->parent)
+ if (strcmpic(addr->address, parent->address) == 0) break;
-If any headers have been rewritten during routing, update the spool file to
-remember them for all subsequent deliveries. This can be delayed till later if
-there is only address to be delivered - if it succeeds the spool write need not
-happen. */
+ /* If there's an ancestor with the same name, set the homonym flag. This
+ influences how deliveries are recorded. Then add a prefix on the front of
+ the unique address. We use \n\ where n starts at 0 and increases each time.
+ It is unlikely to pass 9, but if it does, it may look odd but will still
+ work. This means that siblings or cousins with the same names are treated
+ as duplicates, which is what we want. */
-if ( header_rewritten
- && ( addr_local && (addr_local->next || addr_remote)
- || addr_remote && addr_remote->next
- ) )
- {
- /* Panic-dies on error */
- (void)spool_write_header(message_id, SW_DELIVERING, NULL);
- header_rewritten = FALSE;
- }
+ if (parent)
+ {
+ setflag(addr, af_homonym);
+ if (parent->unique[0] != '\\')
+ addr->unique = string_sprintf("\\0\\%s", addr->address);
+ else
+ addr->unique = string_sprintf("\\%c\\%s", parent->unique[1] + 1,
+ addr->address);
+ }
+ /* Ensure that the domain in the unique field is lower cased, because
+ domains are always handled caselessly. */
-/* If there are any deliveries to be and we do not already have the journal
-file, create it. This is used to record successful deliveries as soon as
-possible after each delivery is known to be complete. A file opened with
-O_APPEND is used so that several processes can run simultaneously.
+ for (uschar * p = Ustrrchr(addr->unique, '@'); *p; p++) *p = tolower(*p);
-The journal is just insurance against crashes. When the spool file is
-ultimately updated at the end of processing, the journal is deleted. If a
-journal is found to exist at the start of delivery, the addresses listed
-therein are added to the non-recipients. */
+ DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
-if (addr_local || addr_remote)
- {
- if (journal_fd < 0)
- {
- uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
-
- if ((journal_fd = Uopen(fname,
-#ifdef O_CLOEXEC
- O_CLOEXEC |
-#endif
- O_WRONLY|O_APPEND|O_CREAT|O_EXCL, SPOOL_MODE)) < 0)
+ if (tree_search(tree_nonrecipients, addr->unique))
{
- log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s",
- fname, strerror(errno));
- return DELIVER_NOT_ATTEMPTED;
+ DEBUG(D_deliver|D_route)
+ debug_printf("%s was previously delivered: discarded\n", addr->unique);
+ child_done(addr, tod_stamp(tod_log));
+ continue;
}
- /* Set the close-on-exec flag, make the file owned by Exim, and ensure
- that the mode is correct - the group setting doesn't always seem to get
- set automatically. */
-
- if( fchown(journal_fd, exim_uid, exim_gid)
- || fchmod(journal_fd, SPOOL_MODE)
-#ifndef O_CLOEXEC
- || fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC)
-#endif
- )
+ if (f.queue_2stage)
{
- int ret = Uunlink(fname);
- log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s",
- fname, strerror(errno));
- if(ret && errno != ENOENT)
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
- fname, strerror(errno));
- return DELIVER_NOT_ATTEMPTED;
+ DEBUG(D_deliver)
+ debug_printf_indent("no router retry check (ph1 qrun)\n");
}
- }
- }
-else if (journal_fd >= 0)
- {
- close(journal_fd);
- journal_fd = -1;
- }
-
-
+ else
+ {
+ /* Get the routing retry status, saving the two retry keys (with and
+ without the local part) for subsequent use. If there is no retry record
+ for the standard address routing retry key, we look for the same key with
+ the sender attached, because this form is used by the smtp transport after
+ a 4xx response to RCPT when address_retry_include_sender is true. */
-/* Now we can get down to the business of actually doing deliveries. Local
-deliveries are done first, then remote ones. If ever the problems of how to
-handle fallback transports are figured out, this section can be put into a loop
-for handling fallbacks, though the uid switching will have to be revised. */
+ DEBUG(D_deliver|D_retry)
+ {
+ debug_printf_indent("checking router retry status\n");
+ acl_level++;
+ }
+ addr->domain_retry_key = string_sprintf("R:%s", addr->domain);
+ addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part,
+ addr->domain);
-/* Precompile a regex that is used to recognize a parameter in response
-to an LHLO command, if is isn't already compiled. This may be used on both
-local and remote LMTP deliveries. */
+ if (dbm_file)
+ {
+ domain_retry_record = dbfn_read(dbm_file, addr->domain_retry_key);
+ if ( domain_retry_record
+ && now - domain_retry_record->time_stamp > retry_data_expire
+ )
+ {
+ DEBUG(D_deliver|D_retry)
+ debug_printf_indent("domain retry record present but expired\n");
+ domain_retry_record = NULL; /* Ignore if too old */
+ }
-if (!regex_IGNOREQUOTA)
- regex_IGNOREQUOTA =
- regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
+ address_retry_record = dbfn_read(dbm_file, addr->address_retry_key);
+ if ( address_retry_record
+ && now - address_retry_record->time_stamp > retry_data_expire
+ )
+ {
+ DEBUG(D_deliver|D_retry)
+ debug_printf_indent("address retry record present but expired\n");
+ address_retry_record = NULL; /* Ignore if too old */
+ }
-/* Handle local deliveries */
+ if (!address_retry_record)
+ {
+ uschar *altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
+ sender_address);
+ address_retry_record = dbfn_read(dbm_file, altkey);
+ if ( address_retry_record
+ && now - address_retry_record->time_stamp > retry_data_expire)
+ {
+ DEBUG(D_deliver|D_retry)
+ debug_printf_indent("address<sender> retry record present but expired\n");
+ address_retry_record = NULL; /* Ignore if too old */
+ }
+ }
+ }
-if (addr_local)
- {
- DEBUG(D_deliver|D_transport)
- debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
- do_local_deliveries();
- disable_logging = FALSE;
- }
+ DEBUG(D_deliver|D_retry)
+ {
+ if (!domain_retry_record)
+ debug_printf_indent("no domain retry record\n");
+ else
+ debug_printf_indent("have domain retry record; next_try = now%+d\n",
+ f.running_in_test_harness ? 0 :
+ (int)(domain_retry_record->next_try - now));
-/* If queue_run_local is set, we do not want to attempt any remote deliveries,
-so just queue them all. */
+ if (!address_retry_record)
+ debug_printf_indent("no address retry record\n");
+ else
+ debug_printf_indent("have address retry record; next_try = now%+d\n",
+ f.running_in_test_harness ? 0 :
+ (int)(address_retry_record->next_try - now));
+ acl_level--;
+ }
+ }
-if (queue_run_local)
- while (addr_remote)
- {
- address_item *addr = addr_remote;
- addr_remote = addr->next;
- addr->next = NULL;
- addr->basic_errno = ERRNO_LOCAL_ONLY;
- addr->message = US"remote deliveries suppressed";
- (void)post_process_one(addr, DEFER, LOG_MAIN, DTYPE_TRANSPORT, 0);
- }
+ /* If we are sending a message down an existing SMTP connection, we must
+ assume that the message which created the connection managed to route
+ an address to that connection. We do not want to run the risk of taking
+ a long time over routing here, because if we do, the server at the other
+ end of the connection may time it out. This is especially true for messages
+ with lots of addresses. For this kind of delivery, queue_running is not
+ set, so we would normally route all addresses. We take a pragmatic approach
+ and defer routing any addresses that have any kind of domain retry record.
+ That is, we don't even look at their retry times. It doesn't matter if this
+ doesn't work occasionally. This is all just an optimization, after all.
-/* Handle remote deliveries */
+ The reason for not doing the same for address retries is that they normally
+ arise from 4xx responses, not DNS timeouts. */
-if (addr_remote)
- {
- DEBUG(D_deliver|D_transport)
- debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
+ if (continue_hostname && domain_retry_record)
+ {
+ addr->message = US"reusing SMTP connection skips previous routing defer";
+ addr->basic_errno = ERRNO_RRETRY;
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
- /* Precompile some regex that are used to recognize parameters in response
- to an EHLO command, if they aren't already compiled. */
+ addr->message = domain_retry_record->text;
+ setflag(addr, af_pass_message);
+ }
- deliver_init();
+ /* If we are in a queue run, defer routing unless there is no retry data or
+ we've passed the next retry time, or this message is forced. In other
+ words, ignore retry data when not in a queue run.
- /* Now sort the addresses if required, and do the deliveries. The yield of
- do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
- cannot be delivered in one transaction. */
+ However, if the domain retry time has expired, always allow the routing
+ attempt. If it fails again, the address will be failed. This ensures that
+ each address is routed at least once, even after long-term routing
+ failures.
- if (remote_sort_domains) sort_remote_deliveries();
- if (!do_remote_deliveries(FALSE))
- {
- log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all "
- "be delivered in one transaction");
- fprintf(stderr, "delivery to smarthost failed (configuration problem)\n");
+ If there is an address retry, check that too; just wait for the next
+ retry time. This helps with the case when the temporary error on the
+ address was really message-specific rather than address specific, since
+ it allows other messages through.
- final_yield = DELIVER_MUA_FAILED;
- addr_failed = addr_defer = NULL; /* So that we remove the message */
- goto DELIVERY_TIDYUP;
- }
+ We also wait for the next retry time if this is a message sent down an
+ existing SMTP connection (even though that will be forced). Otherwise there
+ will be far too many attempts for an address that gets a 4xx error. In
+ fact, after such an error, we should not get here because, the host should
+ not be remembered as one this message needs. However, there was a bug that
+ used to cause this to happen, so it is best to be on the safe side.
- /* See if any of the addresses that failed got put on the queue for delivery
- to their fallback hosts. We do it this way because often the same fallback
- host is used for many domains, so all can be sent in a single transaction
- (if appropriately configured). */
+ Even if we haven't reached the retry time in the hints, there is one more
+ check to do, which is for the ultimate address timeout. We only do this
+ check if there is an address retry record and there is not a domain retry
+ record; this implies that previous attempts to handle the address had the
+ retry_use_local_parts option turned on. We use this as an approximation
+ for the destination being like a local delivery, for example delivery over
+ LMTP to an IMAP message store. In this situation users are liable to bump
+ into their quota and thereby have intermittently successful deliveries,
+ which keep the retry record fresh, which can lead to us perpetually
+ deferring messages. */
- if (addr_fallback && !mua_wrapper)
- {
- DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n");
- addr_remote = addr_fallback;
- addr_fallback = NULL;
- if (remote_sort_domains) sort_remote_deliveries();
- do_remote_deliveries(TRUE);
- }
- disable_logging = FALSE;
- }
+ else if ( ( f.queue_running && !f.deliver_force
+ || continue_hostname
+ )
+ && ( ( domain_retry_record
+ && now < domain_retry_record->next_try
+ && !domain_retry_record->expired
+ )
+ || ( address_retry_record
+ && now < address_retry_record->next_try
+ ) )
+ && ( domain_retry_record
+ || !address_retry_record
+ || !retry_ultimate_address_timeout(addr->address_retry_key,
+ addr->domain, address_retry_record, now)
+ ) )
+ {
+ addr->message = US"retry time not reached";
+ addr->basic_errno = ERRNO_RRETRY;
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ /* For remote-retry errors (here and just above) that we've not yet
+ hit the retry time, use the error recorded in the retry database
+ as info in the warning message. This lets us send a message even
+ when we're not failing on a fresh attempt. We assume that this
+ info is not sensitive. */
-/* All deliveries are now complete. Ignore SIGTERM during this tidying up
-phase, to minimize cases of half-done things. */
+ addr->message = domain_retry_record
+ ? domain_retry_record->text : address_retry_record->text;
+ setflag(addr, af_pass_message);
+ }
-DEBUG(D_deliver)
- debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
+ /* The domain is OK for routing. Remember if retry data exists so it
+ can be cleaned up after a successful delivery. */
-/* Root privilege is no longer needed */
+ else
+ {
+ if (domain_retry_record || address_retry_record)
+ setflag(addr, af_dr_retry_exists);
+ addr->next = addr_route;
+ addr_route = addr;
+ DEBUG(D_deliver|D_route)
+ debug_printf("%s: queued for routing\n", addr->address);
+ }
+ }
-exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying");
+ /* If not transaction-capable, the database is closed while routing is
+ actually happening. Requests to update it are put on a chain and all processed
+ together at the end. */
-set_process_info("tidying up after delivering %s", message_id);
-signal(SIGTERM, SIG_IGN);
+ if (dbm_file)
+ if (exim_lockfile_needed())
+ { dbfn_close(dbm_file); continue_retry_db = dbm_file = NULL; }
+ else
+ DEBUG(D_hints_lookup) debug_printf("retaining retry hintsdb handle\n");
-/* When we are acting as an MUA wrapper, the smtp transport will either have
-succeeded for all addresses, or failed them all in normal cases. However, there
-are some setup situations (e.g. when a named port does not exist) that cause an
-immediate exit with deferral of all addresses. Convert those into failures. We
-do not ever want to retry, nor do we want to send a bounce message. */
+ /* If queue_domains is set, we don't even want to try routing addresses in
+ those domains. During queue runs, queue_domains is forced to be unset.
+ Optimize by skipping this pass through the addresses if nothing is set. */
-if (mua_wrapper)
- {
- if (addr_defer)
+ if (!f.deliver_force && queue_domains)
{
- address_item *addr, *nextaddr;
- for (addr = addr_defer; addr; addr = nextaddr)
+ address_item *okaddr = NULL;
+ while (addr_route)
{
- log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred "
- "delivery", addr->address);
- nextaddr = addr->next;
- addr->next = addr_failed;
- addr_failed = addr;
+ address_item *addr = addr_route;
+ addr_route = addr->next;
+
+ deliver_domain = addr->domain; /* set $domain */
+ if ((rc = match_isinlist(addr->domain, CUSS &queue_domains, 0,
+ &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
+ != OK)
+ if (rc == DEFER)
+ {
+ addr->basic_errno = ERRNO_LISTDEFER;
+ addr->message = US"queue_domains lookup deferred";
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ }
+ else
+ {
+ addr->next = okaddr;
+ okaddr = addr;
+ }
+ else
+ {
+ addr->basic_errno = ERRNO_QUEUE_DOMAIN;
+ addr->message = US"domain is in queue_domains";
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ }
}
- addr_defer = NULL;
+
+ addr_route = okaddr;
}
- /* Now all should either have succeeded or failed. */
+ /* Now route those addresses that are not deferred. */
- if (!addr_failed)
- final_yield = DELIVER_MUA_SUCCEEDED;
- else
+ while (addr_route)
{
- host_item * host;
- uschar *s = addr_failed->user_message;
-
- if (!s) s = addr_failed->message;
+ int rc;
+ address_item *addr = addr_route;
+ const uschar *old_domain = addr->domain;
+ uschar *old_unique = addr->unique;
+ addr_route = addr->next;
+ addr->next = NULL;
- fprintf(stderr, "Delivery failed: ");
- if (addr_failed->basic_errno > 0)
- {
- fprintf(stderr, "%s", strerror(addr_failed->basic_errno));
- if (s) fprintf(stderr, ": ");
- }
- if ((host = addr_failed->host_used))
- fprintf(stderr, "H=%s [%s]: ", host->name, host->address);
- if (s)
- fprintf(stderr, "%s", CS s);
- else if (addr_failed->basic_errno <= 0)
- fprintf(stderr, "unknown error");
- fprintf(stderr, "\n");
+ /* Just in case some router parameter refers to it. */
- final_yield = DELIVER_MUA_FAILED;
- addr_failed = NULL;
- }
- }
+ if (!(return_path = addr->prop.errors_address))
+ return_path = sender_address;
-/* In a normal configuration, we now update the retry database. This is done in
-one fell swoop at the end in order not to keep opening and closing (and
-locking) the database. The code for handling retries is hived off into a
-separate module for convenience. We pass it the addresses of the various
-chains, because deferred addresses can get moved onto the failed chain if the
-retry cutoff time has expired for all alternative destinations. Bypass the
-updating of the database if the -N flag is set, which is a debugging thing that
-prevents actual delivery. */
+ /* If a router defers an address, add a retry item. Whether or not to
+ use the local part in the key is a property of the router. */
-else if (!dont_deliver)
- retry_update(&addr_defer, &addr_failed, &addr_succeed);
+ if ((rc = route_address(addr, &addr_local, &addr_remote, &addr_new,
+ &addr_succeed, v_none)) == DEFER)
+ retry_add_item(addr,
+ addr->router->retry_use_local_part
+ ? string_sprintf("R:%s@%s", addr->local_part, addr->domain)
+ : string_sprintf("R:%s", addr->domain),
+ 0);
-/* Send DSN for successful messages if requested */
-addr_senddsn = NULL;
+ /* Otherwise, if there is an existing retry record in the database, add
+ retry items to delete both forms. We must also allow for the possibility
+ of a routing retry that includes the sender address. Since the domain might
+ have been rewritten (expanded to fully qualified) as a result of routing,
+ ensure that the rewritten form is also deleted. */
-for (addr_dsntmp = addr_succeed; addr_dsntmp; addr_dsntmp = addr_dsntmp->next)
- {
- /* af_ignore_error not honored here. it's not an error */
- DEBUG(D_deliver) debug_printf("DSN: processing router : %s\n"
- "DSN: processing successful delivery address: %s\n"
- "DSN: Sender_address: %s\n"
- "DSN: orcpt: %s flags: %d\n"
- "DSN: envid: %s ret: %d\n"
- "DSN: Final recipient: %s\n"
- "DSN: Remote SMTP server supports DSN: %d\n",
- addr_dsntmp->router->name,
- addr_dsntmp->address,
- sender_address,
- addr_dsntmp->dsn_orcpt, addr_dsntmp->dsn_flags,
- dsn_envid, dsn_ret,
- addr_dsntmp->address,
- addr_dsntmp->dsn_aware
- );
+ else if (testflag(addr, af_dr_retry_exists))
+ {
+ uschar * altkey = string_sprintf("%s:<%s>", addr->address_retry_key,
+ sender_address);
+ retry_add_item(addr, altkey, rf_delete);
+ retry_add_item(addr, addr->address_retry_key, rf_delete);
+ retry_add_item(addr, addr->domain_retry_key, rf_delete);
+ if (Ustrcmp(addr->domain, old_domain) != 0)
+ retry_add_item(addr, string_sprintf("R:%s", old_domain), rf_delete);
+ }
- /* send report if next hop not DSN aware or a router flagged "last DSN hop"
- and a report was requested */
- if ( ( addr_dsntmp->dsn_aware != dsn_support_yes
- || addr_dsntmp->dsn_flags & rf_dsnlasthop
- )
- && addr_dsntmp->dsn_flags & rf_dsnflags
- && addr_dsntmp->dsn_flags & rf_notify_success
- )
- {
- /* copy and relink address_item and send report with all of them at once later */
- address_item *addr_next;
- addr_next = addr_senddsn;
- addr_senddsn = store_get(sizeof(address_item));
- memcpy(addr_senddsn, addr_dsntmp, sizeof(address_item));
- addr_senddsn->next = addr_next;
- }
- else
- DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n");
- }
+ /* DISCARD is given for :blackhole: and "seen finish". The event has been
+ logged, but we need to ensure the address (and maybe parents) is marked
+ done. */
-if (addr_senddsn)
- {
- pid_t pid;
- int fd;
+ if (rc == DISCARD)
+ {
+ address_done(addr, tod_stamp(tod_log));
+ continue; /* route next address */
+ }
- /* create exim process to send message */
- pid = child_open_exim(&fd);
+ /* The address is finished with (failed or deferred). */
- DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid);
+ if (rc != OK)
+ {
+ (void)post_process_one(addr, rc, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue; /* route next address */
+ }
- if (pid < 0) /* Creation of child failed */
- {
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
- "create child process to send failure message: %s", getpid(),
- getppid(), strerror(errno));
+ /* The address has been routed. If the router changed the domain, it will
+ also have changed the unique address. We have to test whether this address
+ has already been delivered, because it's the unique address that finally
+ gets recorded. */
- DEBUG(D_deliver) debug_printf("DSN: child_open_exim failed\n");
- }
- else /* Creation of child succeeded */
- {
- FILE *f = fdopen(fd, "wb");
- /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
- uschar * bound;
- transport_ctx tctx = {0};
+ if ( addr->unique != old_unique
+ && tree_search(tree_nonrecipients, addr->unique) != 0
+ )
+ {
+ DEBUG(D_deliver|D_route) debug_printf("%s was previously delivered: "
+ "discarded\n", addr->address);
+ if (addr_remote == addr) addr_remote = addr->next;
+ else if (addr_local == addr) addr_local = addr->next;
+ }
- DEBUG(D_deliver)
- debug_printf("sending error message to: %s\n", sender_address);
+ /* If the router has same_domain_copy_routing set, we are permitted to copy
+ the routing for any other addresses with the same domain. This is an
+ optimisation to save repeated DNS lookups for "standard" remote domain
+ routing. The option is settable only on routers that generate host lists.
+ We play it very safe, and do the optimization only if the address is routed
+ to a remote transport, there are no header changes, and the domain was not
+ modified by the router. */
- /* build unique id for MIME boundary */
- bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
- DEBUG(D_deliver) debug_printf("DSN: MIME boundary: %s\n", bound);
+ if ( addr_remote == addr
+ && addr->router->same_domain_copy_routing
+ && !addr->prop.extra_headers
+ && !addr->prop.remove_headers
+ && old_domain == addr->domain
+ )
+ {
+ address_item **chain = &addr_route;
+ while (*chain)
+ {
+ address_item *addr2 = *chain;
+ if (Ustrcmp(addr2->domain, addr->domain) != 0)
+ {
+ chain = &(addr2->next);
+ continue;
+ }
- if (errors_reply_to)
- fprintf(f, "Reply-To: %s\n", errors_reply_to);
+ /* Found a suitable address; take it off the routing list and add it to
+ the remote delivery list. */
- fprintf(f, "Auto-Submitted: auto-generated\n"
- "From: Mail Delivery System <Mailer-Daemon@%s>\n"
- "To: %s\n"
- "Subject: Delivery Status Notification\n"
- "Content-Type: multipart/report; report-type=delivery-status; boundary=%s\n"
- "MIME-Version: 1.0\n\n"
+ *chain = addr2->next;
+ addr2->next = addr_remote;
+ addr_remote = addr2;
- "--%s\n"
- "Content-type: text/plain; charset=us-ascii\n\n"
+ /* Copy the routing data */
- "This message was created automatically by mail delivery software.\n"
- " ----- The following addresses had successful delivery notifications -----\n",
- qualify_domain_sender, sender_address, bound, bound);
+ addr2->domain = addr->domain;
+ addr2->router = addr->router;
+ addr2->transport = addr->transport;
+ addr2->host_list = addr->host_list;
+ addr2->fallback_hosts = addr->fallback_hosts;
+ addr2->prop.errors_address = addr->prop.errors_address;
+ copyflag(addr2, addr, af_hide_child);
+ copyflag(addr2, addr, af_local_host_removed);
- for (addr_dsntmp = addr_senddsn; addr_dsntmp;
- addr_dsntmp = addr_dsntmp->next)
- fprintf(f, "<%s> (relayed %s)\n\n",
- addr_dsntmp->address,
- (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1
- ? "via non DSN router"
- : addr_dsntmp->dsn_aware == dsn_support_no
- ? "to non-DSN-aware mailer"
- : "via non \"Remote SMTP\" router"
- );
+ DEBUG(D_deliver|D_route)
+ debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
+ "routing %s\n"
+ "Routing for %s copied from %s\n",
+ addr2->address, addr2->address, addr->address);
+ }
+ }
+ } /* Continue with routing the next address. */
+ } /* Loop to process any child addresses that the routers created, and
+ any rerouted addresses that got put back on the new chain. */
- fprintf(f, "--%s\n"
- "Content-type: message/delivery-status\n\n"
- "Reporting-MTA: dns; %s\n",
- bound, smtp_active_hostname);
+/* Debugging: show the results of the routing */
- if (dsn_envid)
- { /* must be decoded from xtext: see RFC 3461:6.3a */
- uschar *xdec_envid;
- if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
- fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
- else
- fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
- }
- fputc('\n', f);
+DEBUG(D_deliver|D_retry|D_route)
+ {
+ debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
+ debug_printf("After routing:\n Local deliveries:\n");
+ for (address_item * p = addr_local; p; p = p->next)
+ debug_printf(" %s\n", p->address);
- for (addr_dsntmp = addr_senddsn;
- addr_dsntmp;
- addr_dsntmp = addr_dsntmp->next)
- {
- if (addr_dsntmp->dsn_orcpt)
- fprintf(f,"Original-Recipient: %s\n", addr_dsntmp->dsn_orcpt);
+ debug_printf(" Remote deliveries:\n");
+ for (address_item * p = addr_remote; p; p = p->next)
+ debug_printf(" %s\n", p->address);
- fprintf(f, "Action: delivered\n"
- "Final-Recipient: rfc822;%s\n"
- "Status: 2.0.0\n",
- addr_dsntmp->address);
+ debug_printf(" Failed addresses:\n");
+ for (address_item * p = addr_failed; p; p = p->next)
+ debug_printf(" %s\n", p->address);
- if (addr_dsntmp->host_used && addr_dsntmp->host_used->name)
- fprintf(f, "Remote-MTA: dns; %s\nDiagnostic-Code: smtp; 250 Ok\n\n",
- addr_dsntmp->host_used->name);
- else
- fprintf(f, "Diagnostic-Code: X-Exim; relayed via non %s router\n\n",
- (addr_dsntmp->dsn_flags & rf_dsnlasthop) == 1 ? "DSN" : "SMTP");
- }
+ debug_printf(" Deferred addresses:\n");
+ for (address_item * p = addr_defer; p; p = p->next)
+ debug_printf(" %s\n", p->address);
+ }
- fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound);
+/* Free any resources that were cached during routing. */
- fflush(f);
- transport_filter_argv = NULL; /* Just in case */
- return_path = sender_address; /* In case not previously set */
+search_tidyup();
+route_tidyup();
- /* Write the original email out */
+/* These two variables are set only during routing, after check_local_user.
+Ensure they are not set in transports. */
- tctx.options = topt_add_return_path | topt_no_body;
- transport_write_message(fileno(f), &tctx, 0);
- fflush(f);
+local_user_gid = (gid_t)(-1);
+local_user_uid = (uid_t)(-1);
- fprintf(f,"\n--%s--\n", bound);
+/* Check for any duplicate addresses. This check is delayed until after
+routing, because the flexibility of the routing configuration means that
+identical addresses with different parentage may end up being redirected to
+different addresses. Checking for duplicates too early (as we previously used
+to) makes this kind of thing not work. */
- fflush(f);
- fclose(f);
- rc = child_close(pid, 0); /* Waits for child to close, no timeout */
- }
- }
+do_duplicate_check(&addr_local);
+do_duplicate_check(&addr_remote);
-/* If any addresses failed, we must send a message to somebody, unless
-af_ignore_error is set, in which case no action is taken. It is possible for
-several messages to get sent if there are addresses with different
-requirements. */
+/* When acting as an MUA wrapper, we proceed only if all addresses route to a
+remote transport. The check that they all end up in one transaction happens in
+the do_remote_deliveries() function. */
-while (addr_failed)
+if ( mua_wrapper
+ && (addr_local || addr_failed || addr_defer)
+ )
{
- pid_t pid;
- int fd;
- uschar *logtod = tod_stamp(tod_log);
address_item *addr;
- address_item *handled_addr = NULL;
- address_item **paddr;
- address_item *msgchain = NULL;
- address_item **pmsgchain = &msgchain;
+ uschar *which, *colon, *msg;
- /* There are weird cases when logging is disabled in the transport. However,
- there may not be a transport (address failed by a router). */
+ if (addr_local)
+ {
+ addr = addr_local;
+ which = US"local";
+ }
+ else if (addr_defer)
+ {
+ addr = addr_defer;
+ which = US"deferred";
+ }
+ else
+ {
+ addr = addr_failed;
+ which = US"failed";
+ }
- disable_logging = FALSE;
- if (addr_failed->transport)
- disable_logging = addr_failed->transport->disable_logging;
+ while (addr->parent) addr = addr->parent;
- DEBUG(D_deliver)
- debug_printf("processing failed address %s\n", addr_failed->address);
+ if (addr->message)
+ {
+ colon = US": ";
+ msg = addr->message;
+ }
+ else colon = msg = US"";
- /* There are only two ways an address in a bounce message can get here:
+ /* We don't need to log here for a forced failure as it will already
+ have been logged. Defer will also have been logged, but as a defer, so we do
+ need to do the failure logging. */
- (1) When delivery was initially deferred, but has now timed out (in the call
- to retry_update() above). We can detect this by testing for
- af_retry_timedout. If the address does not have its own errors address,
- we arrange to ignore the error.
+ if (addr != addr_failed)
+ log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery",
+ addr->address, which);
- (2) If delivery failures for bounce messages are being ignored. We can detect
- this by testing for af_ignore_error. This will also be set if a bounce
- message has been autothawed and the ignore_bounce_errors_after time has
- passed. It might also be set if a router was explicitly configured to
- ignore errors (errors_to = "").
+ /* Always write an error to the caller */
- If neither of these cases obtains, something has gone wrong. Log the
- incident, but then ignore the error. */
+ fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address,
+ which, colon, msg);
- if (sender_address[0] == 0 && !addr_failed->prop.errors_address)
- {
- if ( !testflag(addr_failed, af_retry_timedout)
- && !testflag(addr_failed, af_ignore_error))
- {
- log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message "
- "failure is neither frozen nor ignored (it's been ignored)");
- }
- setflag(addr_failed, af_ignore_error);
- }
+ final_yield = DELIVER_MUA_FAILED;
+ addr_failed = addr_defer = NULL; /* So that we remove the message */
+ goto DELIVERY_TIDYUP;
+ }
- /* If the first address on the list has af_ignore_error set, just remove
- it from the list, throw away any saved message file, log it, and
- mark the recipient done. */
- if ( testflag(addr_failed, af_ignore_error)
- || ( addr_failed->dsn_flags & rf_dsnflags
- && (addr_failed->dsn_flags & rf_notify_failure) != rf_notify_failure
- ) )
- {
- addr = addr_failed;
- addr_failed = addr->next;
- if (addr->return_filename) Uunlink(addr->return_filename);
+/* If this is a run to continue deliveries to an external channel that is
+already set up, defer any local deliveries because we are handling remotes.
- log_write(0, LOG_MAIN, "%s%s%s%s: error ignored",
- addr->address,
- !addr->parent ? US"" : US" <",
- !addr->parent ? US"" : addr->parent->address,
- !addr->parent ? US"" : US">");
+To avoid delaying a local when combined with a callout-hold for a remote
+delivery, test continue_sequence rather than continue_transport. */
- address_done(addr, logtod);
- child_done(addr, logtod);
- /* Panic-dies on error */
- (void)spool_write_header(message_id, SW_DELIVERING, NULL);
+if (continue_sequence > 1 && addr_local)
+ {
+ DEBUG(D_deliver|D_retry|D_route)
+ debug_printf("deferring local deliveries due to continued-transport\n");
+ if (addr_defer)
+ {
+ address_item * addr = addr_defer;
+ while (addr->next) addr = addr->next;
+ addr->next = addr_local;
}
-
- /* Otherwise, handle the sending of a message. Find the error address for
- the first address, then send a message that includes all failed addresses
- that have the same error address. Note the bounce_recipient is a global so
- that it can be accesssed by $bounce_recipient while creating a customized
- error message. */
-
else
- {
- if (!(bounce_recipient = addr_failed->prop.errors_address))
- bounce_recipient = sender_address;
-
- /* Make a subprocess to send a message */
+ addr_defer = addr_local;
+ addr_local = NULL;
+ }
- if ((pid = child_open_exim(&fd)) < 0)
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Process %d (parent %d) failed to "
- "create child process to send failure message: %s", getpid(),
- getppid(), strerror(errno));
- /* Creation of child succeeded */
+/* Because address rewriting can happen in the routers, we should not really do
+ANY deliveries until all addresses have been routed, so that all recipients of
+the message get the same headers. However, this is in practice not always
+possible, since sometimes remote addresses give DNS timeouts for days on end.
+The pragmatic approach is to deliver what we can now, saving any rewritten
+headers so that at least the next lot of recipients benefit from the rewriting
+that has already been done.
- else
- {
- int ch, rc;
- int filecount = 0;
- int rcount = 0;
- uschar *bcc, *emf_text;
- FILE *f = fdopen(fd, "wb");
- FILE *emf = NULL;
- BOOL to_sender = strcmpic(sender_address, bounce_recipient) == 0;
- int max = (bounce_return_size_limit/DELIVER_IN_BUFFER_SIZE + 1) *
- DELIVER_IN_BUFFER_SIZE;
- uschar * bound;
- uschar *dsnlimitmsg;
- uschar *dsnnotifyhdr;
- int topt;
+If any headers have been rewritten during routing, update the spool file to
+remember them for all subsequent deliveries. This can be delayed till later if
+there is only address to be delivered - if it succeeds the spool write need not
+happen. */
- DEBUG(D_deliver)
- debug_printf("sending error message to: %s\n", bounce_recipient);
-
- /* Scan the addresses for all that have the same errors address, removing
- them from the addr_failed chain, and putting them on msgchain. */
-
- paddr = &addr_failed;
- for (addr = addr_failed; addr; addr = *paddr)
- if (Ustrcmp(bounce_recipient, addr->prop.errors_address
- ? addr->prop.errors_address : sender_address) == 0)
- { /* The same - dechain */
- *paddr = addr->next;
- *pmsgchain = addr;
- addr->next = NULL;
- pmsgchain = &(addr->next);
- }
- else
- paddr = &addr->next; /* Not the same; skip */
+if ( f.header_rewritten
+ && ( addr_local && (addr_local->next || addr_remote)
+ || addr_remote && addr_remote->next
+ ) )
+ {
+ /* Panic-dies on error */
+ (void)spool_write_header(message_id, SW_DELIVERING, NULL);
+ f.header_rewritten = FALSE;
+ }
- /* Include X-Failed-Recipients: for automatic interpretation, but do
- not let any one header line get too long. We do this by starting a
- new header every 50 recipients. Omit any addresses for which the
- "hide_child" flag is set. */
- for (addr = msgchain; addr; addr = addr->next)
- {
- if (testflag(addr, af_hide_child)) continue;
- if (rcount >= 50)
- {
- fprintf(f, "\n");
- rcount = 0;
- }
- fprintf(f, "%s%s",
- rcount++ == 0
- ? "X-Failed-Recipients: "
- : ",\n ",
- testflag(addr, af_pfr) && addr->parent
- ? string_printing(addr->parent->address)
- : string_printing(addr->address));
- }
- if (rcount > 0) fprintf(f, "\n");
+/* If there are any deliveries to do and we do not already have the journal
+file, create it. This is used to record successful deliveries as soon as
+possible after each delivery is known to be complete. A file opened with
+O_APPEND is used so that several processes can run simultaneously.
- /* Output the standard headers */
+The journal is just insurance against crashes. When the spool file is
+ultimately updated at the end of processing, the journal is deleted. If a
+journal is found to exist at the start of delivery, the addresses listed
+therein are added to the non-recipients. */
- if (errors_reply_to)
- fprintf(f, "Reply-To: %s\n", errors_reply_to);
- fprintf(f, "Auto-Submitted: auto-replied\n");
- moan_write_from(f);
- fprintf(f, "To: %s\n", bounce_recipient);
+if (addr_local || addr_remote)
+ {
+ if (journal_fd < 0)
+ {
+ uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
- /* generate boundary string and output MIME-Headers */
- bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
+ if ((journal_fd = Uopen(fname,
+ EXIM_CLOEXEC | O_WRONLY|O_APPEND|O_CREAT|O_EXCL, SPOOL_MODE)) < 0)
+ {
+ log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s",
+ fname, strerror(errno));
+ return DELIVER_NOT_ATTEMPTED;
+ }
- fprintf(f, "Content-Type: multipart/report;"
- " report-type=delivery-status; boundary=%s\n"
- "MIME-Version: 1.0\n",
- bound);
+ /* Set the close-on-exec flag, make the file owned by Exim, and ensure
+ that the mode is correct - the group setting doesn't always seem to get
+ set automatically. */
- /* Open a template file if one is provided. Log failure to open, but
- carry on - default texts will be used. */
+ if( exim_fchown(journal_fd, exim_uid, exim_gid, fname)
+ || fchmod(journal_fd, SPOOL_MODE)
+#ifndef O_CLOEXEC
+ || fcntl(journal_fd, F_SETFD, fcntl(journal_fd, F_GETFD) | FD_CLOEXEC)
+#endif
+ )
+ {
+ int ret = Uunlink(fname);
+ log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't set perms on journal file %s: %s",
+ fname, strerror(errno));
+ if(ret && errno != ENOENT)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s",
+ fname, strerror(errno));
+ return DELIVER_NOT_ATTEMPTED;
+ }
+ }
+ }
+else if (journal_fd >= 0)
+ {
+ close(journal_fd);
+ journal_fd = -1;
+ }
- if (bounce_message_file)
- if (!(emf = Ufopen(bounce_message_file, "rb")))
- log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for error "
- "message texts: %s", bounce_message_file, strerror(errno));
- /* Quietly copy to configured additional addresses if required. */
- if ((bcc = moan_check_errorcopy(bounce_recipient)))
- fprintf(f, "Bcc: %s\n", bcc);
+/* Now we can get down to the business of actually doing deliveries. Local
+deliveries are done first, then remote ones. If ever the problems of how to
+handle fallback transports are figured out, this section can be put into a loop
+for handling fallbacks, though the uid switching will have to be revised. */
- /* The texts for the message can be read from a template file; if there
- isn't one, or if it is too short, built-in texts are used. The first
- emf text is a Subject: and any other headers. */
+/* Precompile a regex that is used to recognize a parameter in response
+to an LHLO command, if is isn't already compiled. This may be used on both
+local and remote LMTP deliveries. */
- if ((emf_text = next_emf(emf, US"header")))
- fprintf(f, "%s\n", emf_text);
- else
- fprintf(f, "Subject: Mail delivery failed%s\n\n",
- to_sender? ": returning message to sender" : "");
+if (!regex_IGNOREQUOTA)
+ regex_IGNOREQUOTA =
+ regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", MCS_NOFLAGS, TRUE);
- /* output human readable part as text/plain section */
- fprintf(f, "--%s\n"
- "Content-type: text/plain; charset=us-ascii\n\n",
- bound);
+/* Handle local deliveries */
- if ((emf_text = next_emf(emf, US"intro")))
- fprintf(f, "%s", CS emf_text);
- else
- {
- fprintf(f,
-/* This message has been reworded several times. It seems to be confusing to
-somebody, however it is worded. I have retreated to the original, simple
-wording. */
-"This message was created automatically by mail delivery software.\n");
+if (addr_local)
+ {
+ DEBUG(D_deliver|D_transport)
+ debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
+ do_local_deliveries();
+ f.disable_logging = FALSE;
+ }
- if (bounce_message_text)
- fprintf(f, "%s", CS bounce_message_text);
- if (to_sender)
- fprintf(f,
-"\nA message that you sent could not be delivered to one or more of its\n"
-"recipients. This is a permanent error. The following address(es) failed:\n");
- else
- fprintf(f,
-"\nA message sent by\n\n <%s>\n\n"
-"could not be delivered to one or more of its recipients. The following\n"
-"address(es) failed:\n", sender_address);
- }
- fputc('\n', f);
+/* If queue_run_local is set, we do not want to attempt any remote deliveries,
+so just queue them all. */
- /* Process the addresses, leaving them on the msgchain if they have a
- file name for a return message. (There has already been a check in
- post_process_one() for the existence of data in the message file.) A TRUE
- return from print_address_information() means that the address is not
- hidden. */
+if (f.queue_run_local)
+ while (addr_remote)
+ {
+ address_item *addr = addr_remote;
+ addr_remote = addr->next;
+ addr->next = NULL;
+ addr->basic_errno = ERRNO_LOCAL_ONLY;
+ addr->message = US"remote deliveries suppressed";
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_TRANSPORT, 0);
+ }
- paddr = &msgchain;
- for (addr = msgchain; addr; addr = *paddr)
- {
- if (print_address_information(addr, f, US" ", US"\n ", US""))
- print_address_error(addr, f, US"");
+/* Handle remote deliveries */
- /* End the final line for the address */
+if (addr_remote)
+ {
+ DEBUG(D_deliver|D_transport)
+ debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
- fputc('\n', f);
+ /* Precompile some regex that are used to recognize parameters in response
+ to an EHLO command, if they aren't already compiled. */
- /* Leave on msgchain if there's a return file. */
+ smtp_deliver_init();
- if (addr->return_file >= 0)
- {
- paddr = &(addr->next);
- filecount++;
- }
+ /* Now sort the addresses if required, and do the deliveries. The yield of
+ do_remote_deliveries is FALSE when mua_wrapper is set and all addresses
+ cannot be delivered in one transaction. */
- /* Else save so that we can tick off the recipient when the
- message is sent. */
+ if (remote_sort_domains) sort_remote_deliveries();
+ if (!do_remote_deliveries(FALSE))
+ {
+ log_write(0, LOG_MAIN, "** mua_wrapper is set but recipients cannot all "
+ "be delivered in one transaction");
+ fprintf(stderr, "delivery to smarthost failed (configuration problem)\n");
- else
- {
- *paddr = addr->next;
- addr->next = handled_addr;
- handled_addr = addr;
- }
- }
+ final_yield = DELIVER_MUA_FAILED;
+ addr_failed = addr_defer = NULL; /* So that we remove the message */
+ goto DELIVERY_TIDYUP;
+ }
- fputc('\n', f);
+ /* See if any of the addresses that failed got put on the queue for delivery
+ to their fallback hosts. We do it this way because often the same fallback
+ host is used for many domains, so all can be sent in a single transaction
+ (if appropriately configured). */
- /* Get the next text, whether we need it or not, so as to be
- positioned for the one after. */
+ if (addr_fallback && !mua_wrapper)
+ {
+ DEBUG(D_deliver) debug_printf("Delivering to fallback hosts\n");
+ addr_remote = addr_fallback;
+ addr_fallback = NULL;
+ if (remote_sort_domains) sort_remote_deliveries();
+ do_remote_deliveries(TRUE);
+ }
+ f.disable_logging = FALSE;
+ }
- emf_text = next_emf(emf, US"generated text");
- /* If there were any file messages passed by the local transports,
- include them in the message. Then put the address on the handled chain.
- In the case of a batch of addresses that were all sent to the same
- transport, the return_file field in all of them will contain the same
- fd, and the return_filename field in the *last* one will be set (to the
- name of the file). */
+/* All deliveries are now complete. Ignore SIGTERM during this tidying up
+phase, to minimize cases of half-done things. */
- if (msgchain)
- {
- address_item *nextaddr;
+DEBUG(D_deliver)
+ debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
+cancel_cutthrough_connection(TRUE, US"deliveries are done");
- if (emf_text)
- fprintf(f, "%s", CS emf_text);
- else
- fprintf(f,
- "The following text was generated during the delivery "
- "attempt%s:\n", (filecount > 1)? "s" : "");
+/* Root privilege is no longer needed */
- for (addr = msgchain; addr; addr = nextaddr)
- {
- FILE *fm;
- address_item *topaddr = addr;
+exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying");
- /* List all the addresses that relate to this file */
+set_process_info("tidying up after delivering %s", message_id);
+signal(SIGTERM, SIG_IGN);
- fputc('\n', f);
- while(addr) /* Insurance */
- {
- print_address_information(addr, f, US"------ ", US"\n ",
- US" ------\n");
- if (addr->return_filename) break;
- addr = addr->next;
- }
- fputc('\n', f);
+/* When we are acting as an MUA wrapper, the smtp transport will either have
+succeeded for all addresses, or failed them all in normal cases. However, there
+are some setup situations (e.g. when a named port does not exist) that cause an
+immediate exit with deferral of all addresses. Convert those into failures. We
+do not ever want to retry, nor do we want to send a bounce message. */
- /* Now copy the file */
+if (mua_wrapper)
+ {
+ if (addr_defer)
+ {
+ address_item * nextaddr;
+ for (address_item * addr = addr_defer; addr; addr = nextaddr)
+ {
+ log_write(0, LOG_MAIN, "** %s mua_wrapper forced failure for deferred "
+ "delivery", addr->address);
+ nextaddr = addr->next;
+ addr->next = addr_failed;
+ addr_failed = addr;
+ }
+ addr_defer = NULL;
+ }
- if (!(fm = Ufopen(addr->return_filename, "rb")))
- fprintf(f, " +++ Exim error... failed to open text file: %s\n",
- strerror(errno));
- else
- {
- while ((ch = fgetc(fm)) != EOF) fputc(ch, f);
- (void)fclose(fm);
- }
- Uunlink(addr->return_filename);
+ /* Now all should either have succeeded or failed. */
- /* Can now add to handled chain, first fishing off the next
- address on the msgchain. */
+ if (!addr_failed)
+ final_yield = DELIVER_MUA_SUCCEEDED;
+ else
+ {
+ host_item * host;
+ uschar *s = addr_failed->user_message;
- nextaddr = addr->next;
- addr->next = handled_addr;
- handled_addr = topaddr;
- }
- fputc('\n', f);
- }
+ if (!s) s = addr_failed->message;
- /* output machine readable part */
-#ifdef SUPPORT_I18N
- if (message_smtputf8)
- fprintf(f, "--%s\n"
- "Content-type: message/global-delivery-status\n\n"
- "Reporting-MTA: dns; %s\n",
- bound, smtp_active_hostname);
- else
-#endif
- fprintf(f, "--%s\n"
- "Content-type: message/delivery-status\n\n"
- "Reporting-MTA: dns; %s\n",
- bound, smtp_active_hostname);
+ fprintf(stderr, "Delivery failed: ");
+ if (addr_failed->basic_errno > 0)
+ {
+ fprintf(stderr, "%s", strerror(addr_failed->basic_errno));
+ if (s) fprintf(stderr, ": ");
+ }
+ if ((host = addr_failed->host_used))
+ fprintf(stderr, "H=%s [%s]: ", host->name, host->address);
+ if (s)
+ fprintf(stderr, "%s", CS s);
+ else if (addr_failed->basic_errno <= 0)
+ fprintf(stderr, "unknown error");
+ fprintf(stderr, "\n");
- if (dsn_envid)
- {
- /* must be decoded from xtext: see RFC 3461:6.3a */
- uschar *xdec_envid;
- if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
- fprintf(f, "Original-Envelope-ID: %s\n", dsn_envid);
- else
- fprintf(f, "X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
- }
- fputc('\n', f);
+ final_yield = DELIVER_MUA_FAILED;
+ addr_failed = NULL;
+ }
+ }
- for (addr = handled_addr; addr; addr = addr->next)
- {
- host_item * hu;
- fprintf(f, "Action: failed\n"
- "Final-Recipient: rfc822;%s\n"
- "Status: 5.0.0\n",
- addr->address);
- if ((hu = addr->host_used) && hu->name)
- {
- const uschar * s;
- fprintf(f, "Remote-MTA: dns; %s\n", hu->name);
-#ifdef EXPERIMENTAL_DSN_INFO
- if (hu->address)
- {
- uschar * p = hu->port == 25
- ? US"" : string_sprintf(":%d", hu->port);
- fprintf(f, "Remote-MTA: X-ip; [%s]%s\n", hu->address, p);
- }
- if ((s = addr->smtp_greeting) && *s)
- fprintf(f, "X-Remote-MTA-smtp-greeting: X-str; %s\n", s);
- if ((s = addr->helo_response) && *s)
- fprintf(f, "X-Remote-MTA-helo-response: X-str; %s\n", s);
- if ((s = addr->message) && *s)
- fprintf(f, "X-Exim-Diagnostic: X-str; %s\n", s);
-#endif
- print_dsn_diagnostic_code(addr, f);
- }
- fputc('\n', f);
- }
+/* In a normal configuration, we now update the retry database. This is done in
+one fell swoop at the end in order not to keep opening and closing (and
+locking) the database (at least, for non-transaction-capable DBs.
+The code for handling retries is hived off into a separate module for
+convenience. We pass it the addresses of the various chains,
+because deferred addresses can get moved onto the failed chain if the
+retry cutoff time has expired for all alternative destinations. Bypass the
+updating of the database if the -N flag is set, which is a debugging thing that
+prevents actual delivery. */
- /* Now copy the message, trying to give an intelligible comment if
- it is too long for it all to be copied. The limit isn't strictly
- applied because of the buffering. There is, however, an option
- to suppress copying altogether. */
+else if (!f.dont_deliver)
+ retry_update(&addr_defer, &addr_failed, &addr_succeed);
- emf_text = next_emf(emf, US"copy");
+/* Send DSN for successful messages if requested */
- /* add message body
- we ignore the intro text from template and add
- the text for bounce_return_size_limit at the end.
+maybe_send_dsn(addr_succeed);
- bounce_return_message is ignored
- in case RET= is defined we honor these values
- otherwise bounce_return_body is honored.
+/* If any addresses failed, we must send a message to somebody, unless
+af_ignore_error is set, in which case no action is taken. It is possible for
+several messages to get sent if there are addresses with different
+requirements. */
- bounce_return_size_limit is always honored.
- */
+while (addr_failed)
+ {
+ const uschar * logtod = tod_stamp(tod_log);
+ address_item * addr;
- fprintf(f, "--%s\n", bound);
+ /* There are weird cases when logging is disabled in the transport. However,
+ there may not be a transport (address failed by a router). */
- dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned";
- dsnnotifyhdr = NULL;
- topt = topt_add_return_path;
+ f.disable_logging = FALSE;
+ if (addr_failed->transport)
+ f.disable_logging = addr_failed->transport->disable_logging;
- /* RET=HDRS? top priority */
- if (dsn_ret == dsn_ret_hdrs)
- topt |= topt_no_body;
- else
- {
- struct stat statbuf;
+ DEBUG(D_deliver)
+ debug_printf("processing failed address %s\n", addr_failed->address);
- /* no full body return at all? */
- if (!bounce_return_body)
- {
- topt |= topt_no_body;
- /* add header if we overrule RET=FULL */
- if (dsn_ret == dsn_ret_full)
- dsnnotifyhdr = dsnlimitmsg;
- }
- /* line length limited... return headers only if oversize */
- /* size limited ... return headers only if limit reached */
- else if ( max_received_linelength > bounce_return_linesize_limit
- || ( bounce_return_size_limit > 0
- && fstat(deliver_datafile, &statbuf) == 0
- && statbuf.st_size > max
- ) )
- {
- topt |= topt_no_body;
- dsnnotifyhdr = dsnlimitmsg;
- }
- }
+ /* There are only two ways an address in a bounce message can get here:
-#ifdef SUPPORT_I18N
- if (message_smtputf8)
- fputs(topt & topt_no_body ? "Content-type: message/global-headers\n\n"
- : "Content-type: message/global\n\n",
- f);
- else
-#endif
- fputs(topt & topt_no_body ? "Content-type: text/rfc822-headers\n\n"
- : "Content-type: message/rfc822\n\n",
- f);
-
- fflush(f);
- transport_filter_argv = NULL; /* Just in case */
- return_path = sender_address; /* In case not previously set */
- { /* Dummy transport for headers add */
- transport_ctx tctx = {0};
- transport_instance tb = {0};
-
- tctx.tblock = &tb;
- tctx.options = topt;
- tb.add_headers = dsnnotifyhdr;
-
- transport_write_message(fileno(f), &tctx, 0);
- }
- fflush(f);
+ (1) When delivery was initially deferred, but has now timed out (in the call
+ to retry_update() above). We can detect this by testing for
+ af_retry_timedout. If the address does not have its own errors address,
+ we arrange to ignore the error.
- /* we never add the final text. close the file */
- if (emf)
- (void)fclose(emf);
+ (2) If delivery failures for bounce messages are being ignored. We can detect
+ this by testing for af_ignore_error. This will also be set if a bounce
+ message has been autothawed and the ignore_bounce_errors_after time has
+ passed. It might also be set if a router was explicitly configured to
+ ignore errors (errors_to = "").
- fprintf(f, "\n--%s--\n", bound);
+ If neither of these cases obtains, something has gone wrong. Log the
+ incident, but then ignore the error. */
- /* Close the file, which should send an EOF to the child process
- that is receiving the message. Wait for it to finish. */
+ if (sender_address[0] == 0 && !addr_failed->prop.errors_address)
+ {
+ if ( !testflag(addr_failed, af_retry_timedout)
+ && !addr_failed->prop.ignore_error)
+ log_write(0, LOG_MAIN|LOG_PANIC, "internal error: bounce message "
+ "failure is neither frozen nor ignored (it's been ignored)");
- (void)fclose(f);
- rc = child_close(pid, 0); /* Waits for child to close, no timeout */
+ addr_failed->prop.ignore_error = TRUE;
+ }
- /* In the test harness, let the child do it's thing first. */
+ /* If the first address on the list has af_ignore_error set, just remove
+ it from the list, throw away any saved message file, log it, and
+ mark the recipient done. */
- if (running_in_test_harness) millisleep(500);
+ if ( addr_failed->prop.ignore_error
+ || addr_failed->dsn_flags & rf_dsnflags
+ && !(addr_failed->dsn_flags & rf_notify_failure)
+ )
+ {
+ addr = addr_failed;
+ addr_failed = addr->next;
+ if (addr->return_filename) Uunlink(addr->return_filename);
- /* If the process failed, there was some disaster in setting up the
- error message. Unless the message is very old, ensure that addr_defer
- is non-null, which will have the effect of leaving the message on the
- spool. The failed addresses will get tried again next time. However, we
- don't really want this to happen too often, so freeze the message unless
- there are some genuine deferred addresses to try. To do this we have
- to call spool_write_header() here, because with no genuine deferred
- addresses the normal code below doesn't get run. */
+#ifndef DISABLE_EVENT
+ msg_event_raise(US"msg:fail:delivery", addr);
+#endif
+ log_write(0, LOG_MAIN, "%s%s%s%s: error ignored%s",
+ addr->address,
+ !addr->parent ? US"" : US" <",
+ !addr->parent ? US"" : addr->parent->address,
+ !addr->parent ? US"" : US">",
+ addr->prop.ignore_error
+ ? US"" : US": RFC 3461 DSN, failure notify not requested");
- if (rc != 0)
- {
- uschar *s = US"";
- if (now - received_time < retry_maximum_timeout && !addr_defer)
- {
- addr_defer = (address_item *)(+1);
- deliver_freeze = TRUE;
- deliver_frozen_at = time(NULL);
- /* Panic-dies on error */
- (void)spool_write_header(message_id, SW_DELIVERING, NULL);
- s = US" (frozen)";
- }
- deliver_msglog("Process failed (%d) when writing error message "
- "to %s%s", rc, bounce_recipient, s);
- log_write(0, LOG_MAIN, "Process failed (%d) when writing error message "
- "to %s%s", rc, bounce_recipient, s);
- }
+ address_done(addr, logtod);
+ child_done(addr, logtod);
+ /* Panic-dies on error */
+ (void)spool_write_header(message_id, SW_DELIVERING, NULL);
+ }
- /* The message succeeded. Ensure that the recipients that failed are
- now marked finished with on the spool and their parents updated. */
+ /* Otherwise, handle the sending of a message. Find the error address for
+ the first address, then send a message that includes all failed addresses
+ that have the same error address. */
- else
- {
- for (addr = handled_addr; addr; addr = addr->next)
- {
- address_done(addr, logtod);
- child_done(addr, logtod);
- }
- /* Panic-dies on error */
- (void)spool_write_header(message_id, SW_DELIVERING, NULL);
- }
- }
- }
+ else
+ send_bounce_message(now, logtod);
}
-disable_logging = FALSE; /* In case left set */
+f.disable_logging = FALSE; /* In case left set */
/* Come here from the mua_wrapper case if routing goes wrong */
DELIVERY_TIDYUP:
+if (dbm_file) /* Can only be continue_retry_db */
+ {
+ DEBUG(D_hints_lookup) debug_printf("final close of cached retry db\n");
+ dbfn_close_multi(continue_retry_db);
+ continue_retry_db = dbm_file = NULL;
+ }
+
/* If there are now no deferred addresses, we are done. Preserve the
message log if so configured, and we are using them. Otherwise, sling it.
Then delete the message itself. */
/* Log the end of this message, with queue time if requested. */
if (LOGGING(queue_time_overall))
- log_write(0, LOG_MAIN, "Completed QT=%s",
- readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
+ log_write(0, LOG_MAIN, "Completed QT=%s", string_timesince(&received_time));
else
log_write(0, LOG_MAIN, "Completed");
/* Unset deliver_freeze so that we won't try to move the spool files further down */
- deliver_freeze = FALSE;
+ f.deliver_freeze = FALSE;
#ifndef DISABLE_EVENT
- (void) event_raise(event_action, US"msg:complete", NULL);
+ (void) event_raise(event_action, US"msg:complete", NULL, NULL);
#endif
}
If all the deferred addresses have an error number that indicates "retry time
not reached", skip sending the warning message, because it won't contain the
reason for the delay. It will get sent at the next real delivery attempt.
+ Exception: for retries caused by a remote peer we use the error message
+ store in the retry DB as the reason.
However, if at least one address has tried, we'd better include all of them in
the message.
else if (addr_defer != (address_item *)(+1))
{
- address_item *addr;
- uschar *recipients = US"";
- BOOL delivery_attempted = FALSE;
+ uschar * recipients = US"";
+ BOOL want_warning_msg = FALSE;
deliver_domain = testflag(addr_defer, af_pfr)
? addr_defer->parent->domain : addr_defer->domain;
- for (addr = addr_defer; addr; addr = addr->next)
+ for (address_item * addr = addr_defer; addr; addr = addr->next)
{
- address_item *otaddr;
+ address_item * otaddr;
- if (addr->basic_errno > ERRNO_RETRY_BASE) delivery_attempted = TRUE;
+ if (addr->basic_errno > ERRNO_WARN_BASE) want_warning_msg = TRUE;
if (deliver_domain)
{
for (i = 0; i < recipients_count; i++)
{
- uschar *r = recipients_list[i].address;
+ const uschar * r = recipients_list[i].address;
if (Ustrcmp(otaddr->onetime_parent, r) == 0) t = i;
if (Ustrcmp(otaddr->address, r) == 0) break;
}
if (sender_address[0])
{
- uschar * s = addr->prop.errors_address;
+ const uschar * s = addr->prop.errors_address;
if (!s) s = sender_address;
if (Ustrstr(recipients, s) == NULL)
recipients = string_sprintf("%s%s%s", recipients,
is not sent. Another attempt will be made at the next delivery attempt (if
it also defers). */
- if ( !queue_2stage
- && delivery_attempted
- && ( ((addr_defer->dsn_flags & rf_dsnflags) == 0)
- || (addr_defer->dsn_flags & rf_notify_delay) == rf_notify_delay
+ if ( !f.queue_2stage
+ && want_warning_msg
+ && ( !(addr_defer->dsn_flags & rf_dsnflags)
+ || addr_defer->dsn_flags & rf_notify_delay
)
&& delay_warning[1] > 0
- && sender_address[0] != 0
- && ( !delay_warning_condition
- || expand_check_condition(delay_warning_condition,
- US"delay_warning", US"option")
- )
- )
+ && sender_address[0] != 0)
{
- int count;
- int show_time;
- int queue_time = time(NULL) - received_time;
-
- /* When running in the test harness, there's an option that allows us to
- fudge this time so as to get repeatability of the tests. Take the first
- time off the list. In queue runs, the list pointer gets updated in the
- calling process. */
-
- if (running_in_test_harness && fudged_queue_times[0] != 0)
- {
- int qt = readconf_readtime(fudged_queue_times, '/', FALSE);
- if (qt >= 0)
- {
- DEBUG(D_deliver) debug_printf("fudged queue_times = %s\n",
- fudged_queue_times);
- queue_time = qt;
- }
- }
-
- /* See how many warnings we should have sent by now */
-
- for (count = 0; count < delay_warning[1]; count++)
- if (queue_time < delay_warning[count+2]) break;
-
- show_time = delay_warning[count+1];
-
- if (count >= delay_warning[1])
- {
- int extra;
- int last_gap = show_time;
- if (count > 1) last_gap -= delay_warning[count];
- extra = (queue_time - delay_warning[count+1])/last_gap;
- show_time += last_gap * extra;
- count += extra;
- }
-
- DEBUG(D_deliver)
- {
- debug_printf("time on queue = %s\n", readconf_printtime(queue_time));
- debug_printf("warning counts: required %d done %d\n", count,
- warning_count);
- }
-
- /* We have computed the number of warnings there should have been by now.
- If there haven't been enough, send one, and up the count to what it should
- have been. */
-
- if (warning_count < count)
+ GET_OPTION("delay_warning_condition");
+ if ( ( !delay_warning_condition
+ || expand_check_condition(delay_warning_condition,
+ US"delay_warning", US"option")
+ )
+ )
{
- header_line *h;
- int fd;
- pid_t pid = child_open_exim(&fd);
-
- if (pid > 0)
- {
- uschar *wmf_text;
- FILE *wmf = NULL;
- FILE *f = fdopen(fd, "wb");
- uschar * bound;
- transport_ctx tctx = {0};
-
- if (warn_message_file)
- if (!(wmf = Ufopen(warn_message_file, "rb")))
- log_write(0, LOG_MAIN|LOG_PANIC, "Failed to open %s for warning "
- "message texts: %s", warn_message_file, strerror(errno));
-
- warnmsg_recipients = recipients;
- warnmsg_delay = queue_time < 120*60
- ? string_sprintf("%d minutes", show_time/60)
- : string_sprintf("%d hours", show_time/3600);
-
- if (errors_reply_to)
- fprintf(f, "Reply-To: %s\n", errors_reply_to);
- fprintf(f, "Auto-Submitted: auto-replied\n");
- moan_write_from(f);
- fprintf(f, "To: %s\n", recipients);
-
- /* generated boundary string and output MIME-Headers */
- bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
-
- fprintf(f, "Content-Type: multipart/report;"
- " report-type=delivery-status; boundary=%s\n"
- "MIME-Version: 1.0\n",
- bound);
-
- if ((wmf_text = next_emf(wmf, US"header")))
- fprintf(f, "%s\n", wmf_text);
- else
- fprintf(f, "Subject: Warning: message %s delayed %s\n\n",
- message_id, warnmsg_delay);
-
- /* output human readable part as text/plain section */
- fprintf(f, "--%s\n"
- "Content-type: text/plain; charset=us-ascii\n\n",
- bound);
-
- if ((wmf_text = next_emf(wmf, US"intro")))
- fprintf(f, "%s", CS wmf_text);
- else
- {
- fprintf(f,
-"This message was created automatically by mail delivery software.\n");
-
- if (Ustrcmp(recipients, sender_address) == 0)
- fprintf(f,
-"A message that you sent has not yet been delivered to one or more of its\n"
-"recipients after more than ");
+ int count;
+ int show_time;
+ int queue_time = time(NULL) - received_time.tv_sec;
- else
- fprintf(f,
-"A message sent by\n\n <%s>\n\n"
-"has not yet been delivered to one or more of its recipients after more than \n",
- sender_address);
-
- fprintf(f, "%s on the queue on %s.\n\n"
- "The message identifier is: %s\n",
- warnmsg_delay, primary_hostname, message_id);
-
- for (h = header_list; h; h = h->next)
- if (strncmpic(h->text, US"Subject:", 8) == 0)
- fprintf(f, "The subject of the message is: %s", h->text + 9);
- else if (strncmpic(h->text, US"Date:", 5) == 0)
- fprintf(f, "The date of the message is: %s", h->text + 6);
- fputc('\n', f);
-
- fprintf(f, "The address%s to which the message has not yet been "
- "delivered %s:\n",
- !addr_defer->next ? "" : "es",
- !addr_defer->next ? "is": "are");
- }
+ queue_time = test_harness_fudged_queue_time(queue_time);
- /* List the addresses, with error information if allowed */
+ /* See how many warnings we should have sent by now */
- /* store addr_defer for machine readable part */
- address_item *addr_dsndefer = addr_defer;
- fputc('\n', f);
- while (addr_defer)
- {
- address_item *addr = addr_defer;
- addr_defer = addr->next;
- if (print_address_information(addr, f, US" ", US"\n ", US""))
- print_address_error(addr, f, US"Delay reason: ");
- fputc('\n', f);
- }
- fputc('\n', f);
+ for (count = 0; count < delay_warning[1]; count++)
+ if (queue_time < delay_warning[count+2]) break;
- /* Final text */
+ show_time = delay_warning[count+1];
- if (wmf)
- {
- if ((wmf_text = next_emf(wmf, US"final")))
- fprintf(f, "%s", CS wmf_text);
- (void)fclose(wmf);
- }
- else
- {
- fprintf(f,
-"No action is required on your part. Delivery attempts will continue for\n"
-"some time, and this warning may be repeated at intervals if the message\n"
-"remains undelivered. Eventually the mail delivery software will give up,\n"
-"and when that happens, the message will be returned to you.\n");
- }
+ if (count >= delay_warning[1])
+ {
+ int extra;
+ int last_gap = show_time;
+ if (count > 1) last_gap -= delay_warning[count];
+ extra = (queue_time - delay_warning[count+1])/last_gap;
+ show_time += last_gap * extra;
+ count += extra;
+ }
- /* output machine readable part */
- fprintf(f, "\n--%s\n"
- "Content-type: message/delivery-status\n\n"
- "Reporting-MTA: dns; %s\n",
- bound,
- smtp_active_hostname);
+ DEBUG(D_deliver)
+ {
+ debug_printf("time on queue = %s id %s addr %s\n",
+ readconf_printtime(queue_time), message_id, addr_defer->address);
+ debug_printf("warning counts: required %d done %d\n", count,
+ warning_count);
+ }
+ /* We have computed the number of warnings there should have been by now.
+ If there haven't been enough, send one, and up the count to what it should
+ have been. */
- if (dsn_envid)
+ if (warning_count < count)
+ if (send_warning_message(recipients, queue_time, show_time))
{
- /* must be decoded from xtext: see RFC 3461:6.3a */
- uschar *xdec_envid;
- if (auth_xtextdecode(dsn_envid, &xdec_envid) > 0)
- fprintf(f,"Original-Envelope-ID: %s\n", dsn_envid);
- else
- fprintf(f,"X-Original-Envelope-ID: error decoding xtext formatted ENVID\n");
- }
- fputc('\n', f);
-
- for ( ; addr_dsndefer; addr_dsndefer = addr_dsndefer->next)
- {
- if (addr_dsndefer->dsn_orcpt)
- fprintf(f, "Original-Recipient: %s\n", addr_dsndefer->dsn_orcpt);
-
- fprintf(f, "Action: delayed\n"
- "Final-Recipient: rfc822;%s\n"
- "Status: 4.0.0\n",
- addr_dsndefer->address);
- if (addr_dsndefer->host_used && addr_dsndefer->host_used->name)
- {
- fprintf(f, "Remote-MTA: dns; %s\n",
- addr_dsndefer->host_used->name);
- print_dsn_diagnostic_code(addr_dsndefer, f);
- }
- fputc('\n', f);
- }
-
- fprintf(f, "--%s\n"
- "Content-type: text/rfc822-headers\n\n",
- bound);
-
- fflush(f);
- /* header only as required by RFC. only failure DSN needs to honor RET=FULL */
- tctx.options = topt_add_return_path | topt_no_body;
- transport_filter_argv = NULL; /* Just in case */
- return_path = sender_address; /* In case not previously set */
-
- /* Write the original email out */
- transport_write_message(fileno(f), &tctx, 0);
- fflush(f);
-
- fprintf(f,"\n--%s--\n", bound);
-
- fflush(f);
-
- /* Close and wait for child process to complete, without a timeout.
- If there's an error, don't update the count. */
-
- (void)fclose(f);
- if (child_close(pid, 0) == 0)
- {
- warning_count = count;
- update_spool = TRUE; /* Ensure spool rewritten */
- }
- }
+ warning_count = count;
+ update_spool = TRUE; /* Ensure spool rewritten */
+ }
}
}
/* If this was a first delivery attempt, unset the first time flag, and
ensure that the spool gets updated. */
- if (deliver_firsttime)
+ if (f.deliver_firsttime && !f.queue_2stage)
{
- deliver_firsttime = FALSE;
+ f.deliver_firsttime = FALSE;
update_spool = TRUE;
}
For the "tell" message, we turn \n back into newline. Also, insert a newline
near the start instead of the ": " string. */
- if (deliver_freeze)
+ if (f.deliver_freeze)
{
- if (freeze_tell && freeze_tell[0] != 0 && !local_error_message)
+ if (freeze_tell && *freeze_tell && !f.local_error_message)
{
- uschar *s = string_copy(frozen_info);
- uschar *ss = Ustrstr(s, " by the system filter: ");
+ uschar * s = string_copy(frozen_info);
+ uschar * ss = Ustrstr(s, " by the system filter: ");
- if (ss != NULL)
+ if (ss)
{
ss[21] = '.';
ss[22] = '\n';
}
- ss = s;
- while (*ss != 0)
- {
+ for (ss = s; *ss; )
if (*ss == '\\' && ss[1] == 'n')
- {
- *ss++ = ' ';
- *ss++ = '\n';
- }
- else ss++;
- }
+ { *ss++ = ' '; *ss++ = '\n'; }
+ else
+ ss++;
+
moan_tell_someone(freeze_tell, addr_defer, US"Message frozen",
"Message %s has been frozen%s.\nThe sender is <%s>.\n", message_id,
s, sender_address);
DEBUG(D_deliver)
debug_printf("delivery deferred: update_spool=%d header_rewritten=%d\n",
- update_spool, header_rewritten);
+ update_spool, f.header_rewritten);
- if (update_spool || header_rewritten)
+ if (update_spool || f.header_rewritten)
/* Panic-dies on error */
(void)spool_write_header(message_id, SW_DELIVERING, NULL);
}
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to unlink %s: %s", fname,
strerror(errno));
- /* Move the message off the spool if reqested */
+ /* Move the message off the spool if requested */
#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
- if (deliver_freeze && move_frozen_messages)
+ if (f.deliver_freeze && move_frozen_messages)
(void)spool_move_message(id, message_subdir, US"", US"F");
#endif
}
(void)close(deliver_datafile);
deliver_datafile = -1;
DEBUG(D_deliver) debug_printf("end delivery of %s\n", id);
+#ifdef MEASURE_TIMING
+report_time_since(×tamp_startup, US"delivery end"); /* testcase 0005 */
+#endif
+
+/* If the transport suggested another message to deliver, go round again. */
+
+if (final_yield == DELIVER_ATTEMPTED_NORMAL && *continue_next_id)
+ {
+ addr_defer = addr_failed = addr_succeed = NULL;
+ tree_duplicates = NULL; /* discard dups info from old message */
+ id = string_copyn(continue_next_id, MESSAGE_ID_LENGTH);
+ continue_next_id[0] = '\0';
+ goto CONTINUED_ID;
+ }
/* It is unlikely that there will be any cached resources, since they are
released after routing, and in the delivery subprocesses. However, it's
void
-deliver_init(void)
+tcp_init(void)
{
-if (!regex_PIPELINING) regex_PIPELINING =
- regex_must_compile(US"\\n250[\\s\\-]PIPELINING(\\s|\\n|$)", FALSE, TRUE);
-
-if (!regex_SIZE) regex_SIZE =
- regex_must_compile(US"\\n250[\\s\\-]SIZE(\\s|\\n|$)", FALSE, TRUE);
-
-if (!regex_AUTH) regex_AUTH =
- regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)",
- FALSE, TRUE);
-
-#ifdef SUPPORT_TLS
-if (!regex_STARTTLS) regex_STARTTLS =
- regex_must_compile(US"\\n250[\\s\\-]STARTTLS(\\s|\\n|$)", FALSE, TRUE);
-#endif
-
-if (!regex_CHUNKING) regex_CHUNKING =
- regex_must_compile(US"\\n250[\\s\\-]CHUNKING(\\s|\\n|$)", FALSE, TRUE);
-
-#ifndef DISABLE_PRDR
-if (!regex_PRDR) regex_PRDR =
- regex_must_compile(US"\\n250[\\s\\-]PRDR(\\s|\\n|$)", FALSE, TRUE);
-#endif
-
-#ifdef SUPPORT_I18N
-if (!regex_UTF8) regex_UTF8 =
- regex_must_compile(US"\\n250[\\s\\-]SMTPUTF8(\\s|\\n|$)", FALSE, TRUE);
+#ifdef EXIM_TFO_PROBE
+tfo_probe();
+#else
+f.tcp_fastopen_ok = TRUE;
#endif
+}
-if (!regex_DSN) regex_DSN =
- regex_must_compile(US"\\n250[\\s\\-]DSN(\\s|\\n|$)", FALSE, TRUE);
-if (!regex_IGNOREQUOTA) regex_IGNOREQUOTA =
- regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
-}
+/* Called from a commandline, or from the daemon, to do a delivery.
+We need to regain privs; do this by exec of the exim binary. */
-uschar *
-deliver_get_sender_address (uschar * id)
+void
+delivery_re_exec(int exec_type)
{
-int rc;
-uschar * new_sender_address,
- * save_sender_address;
-BOOL save_qr = queue_running;
-uschar * spoolname;
+uschar * where;
-/* make spool_open_datafile non-noisy on fail */
+if (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only)
+ {
+ int channel_fd = cutthrough.cctx.sock;
-queue_running = TRUE;
+ smtp_peer_options = cutthrough.peer_options;
+ continue_sequence = 0;
-/* Side effect: message_subdir is set for the (possibly split) spool directory */
+#ifndef DISABLE_TLS
+ if (cutthrough.is_tls)
+ {
+ int pfd[2], pid;
-deliver_datafile = spool_open_datafile(id);
-queue_running = save_qr;
-if (deliver_datafile < 0)
- return NULL;
+ smtp_peer_options |= OPTION_TLS;
+ sending_ip_address = cutthrough.snd_ip;
+ sending_port = cutthrough.snd_port;
-/* Save and restore the global sender_address. I'm not sure if we should
-not save/restore all the other global variables too, because
-spool_read_header() may change all of them. But OTOH, when this
-deliver_get_sender_address() gets called, the current message is done
-already and nobody needs the globals anymore. (HS12, 2015-08-21) */
+ where = US"socketpair";
+ if (socketpair(AF_UNIX, SOCK_STREAM, 0, pfd) != 0)
+ goto fail;
-spoolname = string_sprintf("%s-H", id);
-save_sender_address = sender_address;
+ where = US"fork";
+ testharness_pause_ms(150);
+ if ((pid = exim_fork(US"tls-proxy-interproc")) < 0)
+ goto fail;
-rc = spool_read_header(spoolname, TRUE, TRUE);
+ if (pid == 0) /* child: will fork again to totally disconnect */
+ {
+ smtp_proxy_tls(cutthrough.cctx.tls_ctx, big_buffer, big_buffer_size,
+ pfd, 5*60, cutthrough.host.name);
+ /* does not return */
+ }
-new_sender_address = sender_address;
-sender_address = save_sender_address;
+ close(pfd[0]);
+ waitpid(pid, NULL, 0);
+ (void) close(channel_fd); /* release the client socket */
+ channel_fd = pfd[1];
+ }
+#endif
-if (rc != spool_read_OK)
- return NULL;
+ transport_do_pass_socket(cutthrough.transport, cutthrough.host.name,
+ cutthrough.host.address, message_id, channel_fd);
+ }
+else
+ {
+ cancel_cutthrough_connection(TRUE, US"non-continued delivery");
+ (void) child_exec_exim(exec_type, FALSE, NULL, FALSE, 2, US"-Mc", message_id);
+ }
+return; /* compiler quietening; control does not reach here. */
-assert(new_sender_address);
+#ifndef DISABLE_TLS
+fail:
+ log_write(0,
+ LOG_MAIN | (exec_type == CEE_EXEC_EXIT ? LOG_PANIC : LOG_PANIC_DIE),
+ "delivery re-exec %s failed: %s", where, strerror(errno));
-(void)close(deliver_datafile);
-deliver_datafile = -1;
+ /* Get here if exec_type == CEE_EXEC_EXIT.
+ Note: this must be _exit(), not exit(). */
-return new_sender_address;
+ _exit(EX_EXECFAILED);
+#endif
}
/* vi: aw ai sw=2
git://git.exim.org / exim.git / blobdiff