* Exim - an Internet mail transport agent *
*************************************************/
+/* Copyright (c) The Exim Maintainers 2020 - 2023 */
/* 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. */
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;
static ssize_t
readn(int fd, void * buffer, size_t len)
{
- void * next = buffer;
- void * end = buffer + len;
+uschar * next = buffer;
+uschar * end = next + len;
- while (next < end)
- {
- ssize_t got = read(fd, next, end - next);
+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 - buffer;
- next += got;
- }
+ /* 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;
+return len;
}
*/
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_usec = addr->delivery_usec;
+ 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 */
/* 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 > 0) return; /* Incomplete parent */
address_done(addr, now);
if (LOGGING(incoming_interface) && LOGGING(outgoing_interface)
&& sending_ip_address)
{
- g = string_append(g, 2, US" I=[", sending_ip_address);
- g = LOGGING(outgoing_port)
- ? string_append(g, 2, US"]:", string_sprintf("%d", sending_port))
- : string_catn(g, 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 g;
}
g = string_append(g, 3, US" [", h->address, US"]");
if (LOGGING(outgoing_port))
- g = string_append(g, 2, US":", string_sprintf("%d", h->port));
+ g = string_fmt_append(g, ":%d", h->port);
+
+if (continue_sequence > 1) /*XXX this is wrong for a dropped proxyconn. Would have to pass back from transport */
+ g = string_catn(g, US"*", 1);
#ifdef SUPPORT_SOCKS
if (LOGGING(proxy) && proxy_local_address)
{
g = string_append(g, 3, US" PRX=[", proxy_local_address, US"]");
if (LOGGING(outgoing_port))
- g = string_append(g, 2, US":", string_sprintf("%d", proxy_local_port));
+ g = string_fmt_append(g, ":%d", proxy_local_port);
}
#endif
g = d_log_interface(g);
if (testflag(addr, af_tcp_fastopen))
- g = string_catn(g, US" TFO", 4);
+ g = string_catn(g, US" TFO*", testflag(addr, af_tcp_fastopen_data) ? 5 : 4);
return g;
}
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
static gstring *
-d_tlslog(gstring * s, address_item * addr)
+d_tlslog(gstring * g, address_item * addr)
{
if (LOGGING(tls_cipher) && addr->cipher)
- s = string_append(s, 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, 2, US" CV=",
+ g = string_append(g, 2, US" CV=",
testflag(addr, af_cert_verified)
?
#ifdef SUPPORT_DANE
"yes"
: "no");
if (LOGGING(tls_peerdn) && addr->peerdn)
- s = string_append(s, 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(uschar * action, const uschar * event, uschar * ev_data, int * errnop)
{
uschar * s;
if (action)
if (!(s = expand_string(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;
{
DEBUG(D_deliver)
debug_printf("Event(%s): event_action returned \"%s\"\n", event, s);
+ if (errnop)
+ *errnop = ERRNO_EVENT;
return s;
}
}
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 int save_port = deliver_host_port;
-if (!addr->transport)
- return;
-
router_name = addr->router ? addr->router->name : NULL;
-transport_name = addr->transport->name;
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
+ {
+ transport_name = addr->transport->name;
+
+ (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
+ || Ustrcmp(addr->transport->driver_name, "autoreply") == 0
+ ? addr->message : NULL,
+ NULL);
+ }
deliver_host_port = save_port;
deliver_host_address = save_address;
/*************************************************
-* 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:
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, 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, 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, s);
- }
+if (testflag(addr, af_include_affixes) && (s = addr->suffix))
+ yield = string_cat(yield, string_get_lpart_sub(addr, s));
return yield;
}
else
{
- uschar * cmp = g->s + g->ptr;
+ uschar * cmp;
+ int off = gstring_length(g); /* start of the "full address" */
if (addr->local_part)
{
of all, do a caseless comparison; if this succeeds, do a caseful comparison
on the local parts. */
+ 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->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)
{
g = string_catn(g, s, 2);
g = string_cat (g, addr2->address);
-void
-timesince(struct timeval * diff, struct timeval * then)
-{
-gettimeofday(diff, NULL);
-diff->tv_sec -= then->tv_sec;
-if ((diff->tv_usec -= then->tv_usec) < 0)
- {
- diff->tv_sec--;
- diff->tv_usec += 1000*1000;
- }
-}
-
-
-
-uschar *
-string_timediff(struct timeval * diff)
-{
-static uschar buf[sizeof("0.000s")];
-
-if (diff->tv_sec >= 5 || !LOGGING(millisec))
- return readconf_printtime((int)diff->tv_sec);
-
-sprintf(CS buf, "%d.%03ds", (int)diff->tv_sec, (int)diff->tv_usec/1000);
-return buf;
-}
-
-
-uschar *
-string_timesince(struct timeval * then)
-{
-struct timeval diff;
-
-timesince(&diff, then);
-return string_timediff(&diff);
-}
-
/******************************************************************************/
delivery_log(int flags, address_item * addr, int logchar, uschar * msg)
{
gstring * g; /* Used for a temporary, expanding buffer, for building log lines */
-void * reset_point; /* released afterwards. */
+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
-g = reset_point = string_get(256);
+reset_point = store_mark();
+g = string_get_tainted(256, GET_TAINTED); /* addrs will be tainted, so avoid copy */
if (msg)
g = string_append(g, 2, host_and_ident(TRUE), US" ");
if (*queue_name)
g = string_append(g, 2, US" Q=", queue_name);
-#ifdef EXPERIMENTAL_SRS
-if(addr->prop.srs_sender)
- g = string_append(g, 3, US" SRS=<", addr->prop.srs_sender, US">");
-#endif
-
/* 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
when it is not set is for a delivery to /dev/null which is optimised by not
g = string_append(g, 2, US" T=", addr->transport->name);
if (LOGGING(delivery_size))
- g = string_append(g, 2, US" S=",
- string_sprintf("%d", transport_count));
+ g = string_fmt_append(g, " S=%d", transport_count);
/* Local delivery */
if (addr->host_used)
{
g = d_hostlog(g, addr);
- if (continue_sequence > 1)
- g = string_catn(g, US"*", 1);
#ifndef DISABLE_EVENT
deliver_host_address = addr->host_used->address;
#endif
}
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
g = d_tlslog(g, addr);
#endif
}
}
+ 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 (testflag(addr, af_prdr_used))
g = string_catn(g, US" PRDR", 5);
&& (addr->host_used || Ustrcmp(addr->transport->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];
/* Time on queue and actual time taken to deliver */
if (LOGGING(queue_time))
- g = string_append(g, 2, US" QT=",
- string_timesince(&received_time));
+ g = string_append(g, 2, US" QT=", string_timesince(
+ LOGGING(queue_time_exclusive) ? &received_time_complete : &received_time));
if (LOGGING(deliver_time))
- {
- struct timeval diff = {.tv_sec = addr->more_errno, .tv_usec = addr->delivery_usec};
- g = string_append(g, 2, US" DT=", string_timediff(&diff));
- }
+ 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. */
-log_write(0, flags, "%s", string_from_gstring(g));
+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)
{
-gstring * g;
-void * reset_point;
+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. */
-g = reset_point = string_get(256);
-
/* 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. */
{
if (driver_kind[1] == 't' && addr->router)
g = string_append(g, 2, US" R=", addr->router->name);
- g = string_cat(g, string_sprintf(" %c=%s", toupper(driver_kind[1]), driver_name));
+ g = string_fmt_append(g, " %c=%s", toupper(driver_kind[1]), driver_name);
}
else if (driver_kind)
g = string_append(g, 2, US" ", driver_kind);
-/*XXX need an s+s+p sprintf */
-g = string_cat(g, string_sprintf(" defer (%d)", addr->basic_errno));
+g = string_fmt_append(g, " defer (%d)", addr->basic_errno);
if (addr->basic_errno > 0)
- g = string_append(g, 2, US": ",
- US strerror(addr->basic_errno));
+ g = string_append(g, 2, US": ", US strerror(addr->basic_errno));
if (addr->host_used)
- {
- g = string_append(g, 5,
- US" H=", addr->host_used->name,
- US" [", addr->host_used->address, US"]");
- if (LOGGING(outgoing_port))
- {
- int port = addr->host_used->port;
- g = string_append(g, 2,
- US":", port == PORT_NONE ? US"25" : string_sprintf("%d", port));
- }
- }
+ g = d_hostlog(g, addr);
+
+if (LOGGING(deliver_time))
+ g = string_append(g, 2, US" DT=", string_timediff(&addr->delivery_time));
if (addr->message)
g = string_append(g, 2, US": ", addr->message);
-(void) string_from_gstring(g);
-
/* 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, g->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", g->s);
+ "== %Y", g);
store_reset(reset_point);
return;
static void
failure_log(address_item * addr, uschar * driver_kind, uschar * now)
{
-void * reset_point;
-gstring * g = reset_point = string_get(256);
+rmark reset_point = store_mark();
+gstring * g = string_get(256);
+
+#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
/* Build up the log line for the message and main logs */
if (addr->host_used)
g = d_hostlog(g, addr);
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
g = d_tlslog(g, addr);
#endif
if (addr->message)
g = string_append(g, 2, US": ", addr->message);
-(void) string_from_gstring(g);
+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, g->s);
+ deliver_msglog("%s %s failed for %.*s\n", now, driver_kind, g->ptr, g->s);
else
- deliver_msglog("%s %s\n", now, g->s);
+ deliver_msglog("%s %.*s\n", now, g->ptr, g->s);
-log_write(0, LOG_MAIN, "** %s", 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);
{
driver_name = addr->transport->name;
driver_kind = US" transport";
- disable_logging = addr->transport->disable_logging;
+ f.disable_logging = addr->transport->disable_logging;
}
else driver_kind = US"transporting";
}
{
driver_name = addr->router->name;
driver_kind = US" router";
- disable_logging = addr->router->disable_logging;
+ f.disable_logging = addr->router->disable_logging;
}
else driver_kind = US"routing";
}
(void)close(addr->return_file);
}
+/* Check if the transport notifed continue-conn status explicitly, and
+update our knowlege. */
+
+if (testflag(addr, af_new_conn)) continue_sequence = 1;
+else if (testflag(addr, af_cont_conn)) continue_sequence++;
+
/* The success case happens only after delivery by a transport. */
if (result == OK)
}
/* 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;
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;
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);
}
{
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;
}
static BOOL
previously_transported(address_item *addr, BOOL testing)
{
-(void)string_format(big_buffer, big_buffer_size, "%s/%s",
+uschar * s = string_sprintf("%s/%s",
addr->unique + (testflag(addr, af_homonym)? 3:0), addr->transport->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",
/* 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;
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;
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, tp->name, 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
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;
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, tp->name);
- /* Setting this global in the subprocess means we need never clear it */
- transport_name = addr->transport->name;
+ /* Setting these globals in the subprocess means we need never clear them */
+
+ transport_name = tp->name;
+ if (addr->router) router_name = addr->router->name;
+ driver_srcfile = tp->srcfile;
+ driver_srcline = tp->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);
+ debug_print_string(tp->debug_string);
+ replicate = !(tp->info->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->delivery_usec, 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 *)
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->delivery_usec, 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 *));
/* 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);
"message for %s transport): %s", addr->transport->warn_message,
addr->transport->name, expand_string_message);
- else if ((pid = child_open_exim(&fd)) > 0)
+ 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))
struct timeval deliver_time;
address_item *addr2, *addr3, *nextaddr;
int logflags = LOG_MAIN;
- int logchar = dont_deliver? '*' : '=';
+ int logchar = f.dont_deliver? '*' : '=';
transport_instance *tp;
uschar * serialize_key = NULL;
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");
+ : US"No transport set by system filter";
post_process_one(addr, DEFER, logflags, EXIM_DTYPE_TRANSPORT, 0);
continue;
}
/* 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
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 (!(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;
retry_record->expired);
}
- if (queue_running && !deliver_force)
+ if (f.queue_running && !f.deliver_force)
{
ok = (now - retry_record->time_stamp > retry_data_expire)
|| (now >= retry_record->next_try)
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 = US &addr2->shadow_message;
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);
+ stp->name, 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);
+ tp->name, 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
/* Done with this address */
- if (result == OK)
- {
- addr2->more_errno = deliver_time.tv_sec;
- addr2->delivery_usec = deliver_time.tv_usec;
- }
+ 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
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 got quit large items (certificate
-information and such)
+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
/* 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 select() tells us, if data is available for reading.
+here, as the preceding poll() tells us, if data is available for reading.
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
pipeheader[PIPE_HEADER_SIZE] = '\0';
DEBUG(D_deliver)
- debug_printf("got %ld bytes (pipeheader) from transport process %d\n",
- (long) got, pid);
+ debug_printf("got %ld bytes (pipeheader) '%c' from transport process %d\n",
+ (long) got, *id, pid);
{
/* If we can't decode the pipeheader, the subprocess seems to have a
if (!r || !(*ptr & rf_delete))
{
- r = store_get(sizeof(retry_item));
+ r = store_get(sizeof(retry_item), GET_UNTAINTED);
r->next = addr->retries;
addr->retries = r;
r->flags = *ptr++;
/* Put the amount of data written into the parlist block */
- case 'S':
+ case 'S': /* Size */
memcpy(&(p->transport_count), ptr, sizeof(transport_count));
ptr += sizeof(transport_count);
break;
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':
+#ifndef DISABLE_TLS
+ case 'X': /* TLS details */
if (!addr) goto ADDR_MISMATCH; /* Below, in 'A' handler */
switch (*subid)
{
case '1':
- addr->cipher = NULL;
- addr->peerdn = NULL;
+ addr->tlsver = addr->cipher = addr->peerdn = NULL;
if (*ptr)
+ {
addr->cipher = string_copy(ptr);
+ addr->tlsver = string_copyn(ptr, Ustrchr(ptr, ':') - ptr);
+ }
while (*ptr++);
if (*ptr)
addr->peerdn = string_copy(ptr);
}
while (*ptr++);
break;
-#endif /*SUPPORT_TLS*/
+#endif /*DISABLE_TLS*/
case 'C': /* client authenticator information */
switch (*subid)
break;
#endif
+ 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 'K':
setflag(addr, af_chunking_used);
break;
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;
- case 'D':
+ 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':
+ case 'A': /* Per-address info */
if (!addr)
{
ADDR_MISMATCH:
switch (*subid)
{
- #ifdef SUPPORT_SOCKS
+ 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 += sizeof(proxy_local_port);
}
break;
- #endif
+#endif
- #ifdef EXPERIMENTAL_DSN_INFO
+#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);
addr->helo_response = string_copy(ptr);
while(*ptr++);
break;
- #endif
+#endif
- case '0':
+ 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++;
ptr += sizeof(addr->basic_errno);
memcpy(&addr->more_errno, ptr, sizeof(addr->more_errno));
ptr += sizeof(addr->more_errno);
- memcpy(&addr->delivery_usec, ptr, sizeof(addr->delivery_usec));
- ptr += sizeof(addr->delivery_usec);
+ 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;
if (*ptr)
{
- h = store_get(sizeof(host_item));
+ h = store_get(sizeof(host_item), GET_UNTAINTED);
h->name = string_copy(ptr);
while (*ptr++);
h->address = string_copy(ptr);
*/
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
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 (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--;
"transport process list", 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:
"%s %d",
addrlist->transport->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,
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, $localpart_data,
}
/* Get the maximum it can handle in one envelope, with zero meaning
- unlimited, which is forced for the MUA wrapper case. */
+ unlimited, which is forced for the MUA wrapper case and if the
+ value could vary depending on the messages.
+ For those, we only split (below) by (tpt,dest,erraddr,hdrs) and rely on the
+ transport splitting further by max_rcp. So we potentially lose some
+ parallellism. */
- address_count_max = tp->max_addresses;
- if (address_count_max == 0 || mua_wrapper) address_count_max = 999999;
+ address_count_max = mua_wrapper || Ustrchr(tp->max_addresses, '$')
+ ? UNLIMITED_ADDRS : expand_max_rcpt(tp->max_addresses);
/************************************************************************/
/************************************************************************/
+/*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
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;
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);
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;
+/*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
&& addr->host_list
)
{
- host_item * h;
ok = FALSE;
- for (h = addr->host_list; h; h = h->next)
+ 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; }
connected to is too hard to manage. Perhaps we need a finer-grain
interface to the transport. */
- for (next = addr_remote; next && !continue_more; next = next->next)
- {
- host_item *h;
- for (h = next->host_list; h; h = h->next)
+ 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, continue_hostname) == 0)
- { continue_more = TRUE; break; }
- }
+ { f.continue_more = TRUE; break; }
}
/* The transports set up the process info themselves as they may connect
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 select on
+/* 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
search_tidyup();
-
- if ((pid = fork()) == 0)
+ if ((pid = exim_fork(US"transport")) == 0)
{
int fd = pfd[pipe_write];
host_item *h;
- DEBUG(D_deliver) debug_selector |= D_pid; // hs12
- /* Setting this global in the subprocess means we need never clear it */
+ /* Setting these globals in the subprocess means we need never clear them */
+
transport_name = tp->name;
+ if (addr->router) router_name = addr->router->name;
+ driver_srcfile = tp->srcfile;
+ driver_srcline = tp->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
for(; addr; addr = addr->next)
{
uschar *ptr;
- retry_item *r;
/* The certificate verification status goes into the flags */
if (tls_out.certificate_verified) setflag(addr, af_cert_verified);
#ifdef SUPPORT_DANE
if (tls_out.dane_verified) setflag(addr, af_dane_verified);
#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
+#ifndef DISABLE_TLS
if (addr->cipher)
{
ptr = big_buffer + sprintf(CS big_buffer, "%.128s", addr->cipher) + 1;
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)
{
rmt_dlv_checked_write(fd, 'P', '0', NULL, 0);
#endif
+ 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) ? '1' : '0', NULL, 0);
+ 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));
/* 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;
rmt_dlv_checked_write(fd, 'R', '0', big_buffer, ptr - big_buffer);
}
+ 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)
{
ptr += sizeof(addr->basic_errno);
memcpy(ptr, &addr->more_errno, sizeof(addr->more_errno));
ptr += sizeof(addr->more_errno);
- memcpy(ptr, &addr->delivery_usec, sizeof(addr->delivery_usec));
- ptr += sizeof(addr->delivery_usec);
+ 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 (cutthrough.cctx.sock >= 0 && cutthrough.callout_hold_only)
{
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if (cutthrough.is_tls)
tls_close(cutthrough.cctx.tls_ctx, TLS_NO_SHUTDOWN);
#endif
/* 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;
continue_closedown(void)
{
if (continue_transport)
- {
- transport_instance *t;
- for (t = transports; t; t = t->next)
+ for (transport_instance * t = transports; t; t = t->next)
if (Ustrcmp(t->name, continue_transport) == 0)
{
if (t->info->closedown) (t->info->closedown)(t);
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);
}
-/*************************************************
-* 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. */
+static FILE *
+expand_open(const uschar * filename,
+ const uschar * varname, 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", varname, filename);
+else if (*s != '/' || is_tainted(s))
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "%s is not %s after expansion: '%s'\n",
+ varname, *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;
+}
-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);
+/* 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. */
-/* 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.) */
+static void
+dsn_put_wrapped(FILE * fp, const uschar * header, const uschar * s)
+{
+gstring * g = string_cat(NULL, header);
-#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
-
-/* 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 %d (parent %d) failed to "
+ "create child process to send failure message: %s", getpid(),
+ 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.tv_sec = received_time.tv_usec = 0;
- /*XXX subsec precision?*/
- for (i = 0; i < 6; i++)
- received_time.tv_sec = received_time.tv_sec * 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.tv_sec > 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 */
+ 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 (!(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 (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" : "");
+ for (address_item * addr = msgchain; addr; addr = nextaddr)
+ {
+ FILE *fm;
+ address_item *topaddr = addr;
-/* If asked to give up on a message, log who did it, and set the action for all
-the addresses. */
+ /* List all the addresses that relate to this file */
-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;
- }
+ 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);
-/* Otherwise, if there are too many Received: headers, fail all recipients. */
+ /* Now copy the file */
-else if (received_count > received_headers_max)
- process_recipients = RECIP_FAIL_LOOP;
+ 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);
-/* 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. */
+ /* Can now add to handled chain, first fishing off the next
+ address on the msgchain. */
-else if (system_filter && process_recipients != RECIP_FAIL_TIMEOUT)
- {
- int rc;
- int filtertype;
- ugid_block ugid;
- redirect_block redirect;
+ nextaddr = addr->next;
+ addr->next = handled_addr;
+ handled_addr = topaddr;
+ }
+ fputc('\n', fp);
+ }
- if (system_filter_uid_set)
- {
- ugid.uid = system_filter_uid;
- ugid.gid = system_filter_gid;
- ugid.uid_set = ugid.gid_set = TRUE;
- }
+ /* 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 (dsn_envid)
{
- ugid.uid_set = ugid.gid_set = FALSE;
+ /* must be decoded from xtext: see RFC 3461:6.3a */
+ uschar * xdec_envid;
+ if (auth_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");
}
+ fputc('\n', fp);
- return_path = sender_address;
- enable_dollar_recipients = TRUE; /* Permit $recipients in system filter */
- system_filtering = TRUE;
-
- /* Any error in the filter file causes a delivery to be abandoned. */
-
- 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;
+ for (address_item * addr = handled_addr; addr; addr = addr->next)
+ {
+ host_item * hu;
+#ifdef EXPERIMENTAL_DSN_INFO
+ const uschar * s;
+#endif
- DEBUG(D_deliver|D_filter) debug_printf("running system filter\n");
+ print_dsn_addr_action(fp, addr, US"failed", US"5.0.0");
- 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 */
+ 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);
+ }
- DEBUG(D_deliver|D_filter) debug_printf("system filter returned %d\n", rc);
+ /* 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. */
- 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 */
- }
+ emf_text = next_emf(emf, US"copy");
- /* 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. */
+ /* add message body
+ we ignore the intro text from template and add
+ the text for bounce_return_size_limit at the end.
- system_filtering = FALSE;
- enable_dollar_recipients = FALSE;
- if (filter_message && filter_message[0] == 0) filter_message = NULL;
+ bounce_return_message is ignored
+ in case RET= is defined we honor these values
+ otherwise bounce_return_body is honored.
- /* Save the values of the system filter variables so that user filters
- can use them. */
+ bounce_return_size_limit is always honored.
+ */
- memcpy(filter_sn, filter_n, sizeof(filter_sn));
+ fprintf(fp, "--%s\n", bound);
- /* The filter can request that delivery of the original addresses be
- deferred. */
+ dsnlimitmsg = US"X-Exim-DSN-Information: Due to administrative limits only headers are returned";
+ dsnnotifyhdr = NULL;
+ topt = topt_add_return_path;
- if (rc == FF_DEFER)
+ /* RET=HDRS? top priority */
+ if (dsn_ret == dsn_ret_hdrs)
+ topt |= topt_no_body;
+ else
{
- process_recipients = RECIP_DEFER;
- deliver_msglog("Delivery deferred by system filter\n");
- log_write(0, LOG_MAIN, "Delivery deferred by system filter");
+ 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;
+ }
}
- /* 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. */
+#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);
+
+ 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};
- else if (rc == FF_FREEZE && !deliver_manual_thaw)
- {
- 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"");
+ tctx.u.fd = fileno(fp);
+ tctx.tblock = &tb;
+ tctx.options = topt | topt_truncate_headers;
+ tb.add_headers = dsnnotifyhdr;
+
+ /*XXX no checking for failure! buggy! */
+ transport_write_message(&tctx, 0);
}
+ fflush(fp);
- /* 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. */
+ /* we never add the final text. close the file */
+ if (emf)
+ (void)fclose(emf);
- else if (rc == FF_FAIL)
- {
- uschar *colon = US"";
- uschar *logmsg = US"";
- int loglen = 0;
+ fprintf(fp, "\n--%s--\n", bound);
- process_recipients = RECIP_FAIL_FILTER;
+ /* Close the file, which should send an EOF to the child process
+ that is receiving the message. Wait for it to finish. */
- if (filter_message)
+ (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)
+ {
+ uschar * s = US"";
+ if (now - received_time.tv_sec < retry_maximum_timeout && !addr_defer)
{
- 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);
- }
+ 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)";
}
-
- log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen,
- logmsg);
+ 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);
}
- /* Delivery can be restricted only to those recipients (if any) that the
- filter specified. */
+ /* 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_DELIVERED)
+ else
{
- 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)");
+ 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);
}
+ }
+}
- /* 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. */
-
- if (addr_new)
- {
- int uid = (system_filter_uid_set)? system_filter_uid : geteuid();
- int gid = (system_filter_gid_set)? system_filter_gid : getegid();
+/*************************************************
+* Send a warning message *
+*************************************************/
+/* Return: boolean success */
- /* 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. */
+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}};
- address_item *p = addr_new;
- address_item *parent = deliver_make_addr(US"system-filter", FALSE);
- parent->domain = string_copylc(qualify_domain_recipient);
- parent->local_part = US"system-filter";
+if (pid <= 0) return FALSE;
- /* 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. */
+if (warn_message_file)
+ wmf = expand_open(warn_message_file,
+ US"warn_message_file", US"warning");
- while (p)
- {
- 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;
+warnmsg_recipients = recipients;
+warnmsg_delay = queue_time < 120*60
+ ? string_sprintf("%d minutes", show_time/60)
+ : string_sprintf("%d hours", show_time/3600);
- 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);
+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);
- /* Find the name of the system filter's appropriate pfr transport */
+/* generated boundary string and output MIME-Headers */
+bound = string_sprintf(TIME_T_FMT "-eximdsn-%d", time(NULL), rand());
- 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;
- }
+fprintf(f, "Content-Type: multipart/report;"
+ " report-type=delivery-status; boundary=%s\n"
+ "MIME-Version: 1.0\n",
+ bound);
- /* Now find the actual transport, first expanding the name. We have
- set address_file or address_pipe above. */
+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);
- 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);
+/* output human readable part as text/plain section */
+fprintf(f, "--%s\n"
+ "Content-type: text/plain; charset=us-ascii\n\n",
+ bound);
- 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);
- }
+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 we couldn't set up a transport, defer the delivery, putting the
- error on the panic log as well as the main log. */
+ 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 ");
- 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 */
+ 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");
+ }
- /* Either a non-pfr delivery, or we found a transport */
+/* List the addresses, with error information if allowed */
- DEBUG(D_deliver|D_filter)
- debug_printf("system filter added %s\n", p->address);
+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);
- addr_last = p;
- p = p->next;
- } /* Loop through all addr_new addresses */
- }
+/* 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);
-/* 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.
-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.
+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);
-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. */
+for (address_item * addr = addr_defer; addr; addr = addr->next)
+ {
+ host_item * hu;
-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
+ print_dsn_addr_action(f, addr, US"delayed", US"4.0.0");
- if (r->pno >= 0)
- new->onetime_parent = recipients_list[r->pno].address;
+ if ((hu = addr->host_used) && hu->name)
+ {
+ fprintf(f, "Remote-MTA: dns; %s\n", hu->name);
+ print_dsn_diagnostic_code(addr, f);
+ }
+ fputc('\n', f);
+ }
- /* 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_orcpt : US"", new->dsn_flags);
+fprintf(f, "--%s\n"
+ "Content-type: text/rfc822-headers\n\n",
+ bound);
- switch (process_recipients)
- {
- /* RECIP_DEFER is set when a system filter freezes a message. */
+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 */
- case RECIP_DEFER:
- new->next = addr_defer;
- addr_defer = new;
- break;
+/* Write the original email out */
+/*XXX no checking for failure! buggy! */
+transport_write_message(&tctx, 0);
+fflush(f);
+fprintf(f,"\n--%s--\n", bound);
- /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
- command. */
+fflush(f);
- case RECIP_FAIL_FILTER:
- new->message =
- filter_message ? filter_message : US"delivery cancelled";
- setflag(new, af_pass_message);
- goto RECIP_QUEUE_FAILED; /* below */
+/* Close and wait for child process to complete, without a timeout.
+If there's an error, don't update the count. */
+(void)fclose(f);
+return child_close(pid, 0) == 0;
+}
- /* 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. */
+/*************************************************
+* Send a success-DSN *
+*************************************************/
- case RECIP_FAIL_TIMEOUT:
- new->message = US"delivery cancelled; message timed out";
- goto RECIP_QUEUE_FAILED; /* below */
+static void
+maybe_send_dsn(const address_item * const addr_succeed)
+{
+address_item * addr_senddsn = NULL;
+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->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
+ );
- /* RECIP_FAIL is set when -Mg has been used. */
+ /* send report if next hop not DSN aware or a router flagged "last DSN hop"
+ and a report was requested */
- case RECIP_FAIL:
- new->message = US"delivery cancelled by administrator";
- /* Fall through */
+ 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");
+ }
- /* 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. */
+if (addr_senddsn)
+ { /* create exim process to send message */
+ int fd;
+ pid_t pid = child_open_exim(&fd, US"DSN");
- RECIP_QUEUE_FAILED:
- if (sender_address[0] != 0)
- {
- new->next = addr_failed;
- addr_failed = new;
- }
- break;
+ DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid);
+ 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 success-dsn message: %s", getpid(),
+ getppid(), strerror(errno));
- /* 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. */
+ 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}};
- 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;
+ DEBUG(D_deliver)
+ debug_printf("sending success-dsn to: %s\n", sender_address);
+ /* 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);
- /* Value should be RECIP_ACCEPT; take this as the safe default. */
+ if (errors_reply_to)
+ fprintf(f, "Reply-To: %s\n", errors_reply_to);
- default:
- if (!addr_new) addr_new = new; else addr_last->next = new;
- addr_last = new;
- break;
- }
+ 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"
-#ifndef DISABLE_EVENT
- if (process_recipients != RECIP_ACCEPT)
- {
- uschar * save_local = deliver_localpart;
- const uschar * save_domain = deliver_domain;
+ "--%s\n"
+ "Content-type: text/plain; charset=us-ascii\n\n"
- deliver_localpart = expand_string(
- string_sprintf("${local_part:%s}", new->address));
- deliver_domain = expand_string(
- string_sprintf("${domain:%s}", new->address));
+ "This message was created automatically by mail delivery software.\n"
+ " ----- The following addresses had successful delivery notifications -----\n",
+ bound, bound);
- (void) event_raise(event_action,
- US"msg:fail:internal", new->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"
+ );
- deliver_localpart = save_local;
- deliver_domain = save_domain;
- }
-#endif
+ 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 (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)
- {
- 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"");
- }
+ for (address_item * a = addr_senddsn; a; a = a->next)
+ {
+ host_item * hu;
-/* Set up the buffers used for copying over the file when delivering. */
+ print_dsn_addr_action(f, a, US"delivered", US"2.0.0");
-deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
-deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
+ 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");
+ }
+ fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound);
+ fflush(f);
+ transport_filter_argv = NULL; /* Just in case */
+ return_path = sender_address; /* In case not previously set */
-/* Until there are no more new addresses, handle each one as follows:
+ /* Write the original email out */
- . 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.
+ 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);
- . 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.
+ fprintf(f,"\n--%s--\n", bound);
- . Handle the percent hack for those domains for which it is valid.
+ fflush(f);
+ fclose(f);
+ (void) child_close(pid, 0); /* Waits for child to close, no timeout */
+ }
+ }
+}
- . 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.
+/*************************************************
+* Deliver one message *
+*************************************************/
- . 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.
+/* 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.
- . 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.
+If no delivery is attempted for any of the above reasons, the function returns
+DELIVER_NOT_ATTEMPTED.
- . If new addresses have been generated by the routers, da capo.
-*/
+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).
-header_rewritten = FALSE; /* No headers rewritten yet */
-while (addr_new) /* Loop until all addresses dealt with */
- {
- address_item *addr, *parent;
+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.
- /* Failure to open the retry database is treated the same as if it does
- not exist. In both cases, dbm_file is NULL. */
+Liable to be called as root.
- 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");
+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
- /* Scan the current batch of new addresses, to handle pipes, files and
- autoreplies, and determine which others are ready for routing. */
+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)
+*/
+
+int
+deliver_message(const uschar * id, BOOL forced, BOOL give_up)
+{
+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;
+uschar *info;
+
+#ifdef MEASURE_TIMING
+report_time_since(×tamp_startup, US"delivery start"); /* testcase 0022, 2100 */
+#endif
+
+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);
+
+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.) */
+
+#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
+
+/* 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. */
+
+if (id != message_id)
+ Ustrcpy(message_id, id);
+f.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;
+
+/* 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. */
+
+random_seed = 0;
+
+/* 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 ((deliver_datafile = spool_open_datafile(id)) < 0)
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+
+/* 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. */
+
+/* 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)
+ {
+ 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));
+
+ /* 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. */
+
+ if (rc != spool_read_hdrerror)
+ {
+ 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'];
+ }
+
+ /* If we've had this malformed message too long, sling it. */
+
+ if (now - received_time.tv_sec > 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));
+ }
+
+ (void)close(deliver_datafile);
+ deliver_datafile = -1;
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+ }
+ }
+
+/* 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. */
+
+ {
+ uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
+ FILE * jread;
+
+ 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 */
+
+ /* 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 */
+ }
+
+ /* A null recipients list indicates some kind of disaster. */
+
+ 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 */
+ }
+ }
+
+
+/* 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 (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. */
+
+ if ( move_frozen_messages
+ && spool_move_message(id, message_subdir, US"", US"F")
+ )
+ return continue_closedown(); /* yields DELIVER_NOT_ATTEMPTED */
+#endif
+
+ /* 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. */
+
+ 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;
+ }
+
+ /* 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. */
+
+ else if (!*sender_address && message_age >= ignore_bounce_errors_after)
+ log_write(0, LOG_MAIN, "Unfrozen by errmsg timer");
+
+ /* 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. */
+
+ 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 delivery was forced (by an admin user), assume a manual thaw.
+ Otherwise it's an auto thaw. */
+
+ 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");
+ }
+
+ /* We get here if any of the rules for unfreezing have triggered. */
+
+ f.deliver_freeze = FALSE;
+ update_spool = TRUE;
+ }
+
+
+/* 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 (message_logs)
+ {
+ uschar * fname = spool_fname(US"msglog", message_subdir, id, US"");
+ uschar * error;
+ int fd;
+
+ 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 */
+ }
+
+ /* 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. */
+
+ 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 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 */
+
+ 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. */
- while (addr_new)
+ else if (rc == FF_FREEZE && !f.deliver_manual_thaw)
{
- int rc;
- uschar *p;
- tree_node *tnode;
- dbdata_retry *domain_retry_record;
- dbdata_retry *address_retry_record;
+ 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"");
+ }
- addr = addr_new;
- addr_new = addr->next;
+ /* 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. */
- DEBUG(D_deliver|D_retry|D_route)
- {
- debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
- debug_printf("Considering: %s\n", addr->address);
- }
+ else if (rc == FF_FAIL)
+ {
+ uschar *colon = US"";
+ uschar *logmsg = US"";
+ int loglen = 0;
- /* Handle generated address that is a pipe or a file or an autoreply. */
+ process_recipients = RECIP_FAIL_FILTER;
- if (testflag(addr, af_pfr))
+ if (filter_message)
{
- /* 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))
+ uschar *logend;
+ colon = US": ";
+ if ( filter_message[0] == '<'
+ && filter_message[1] == '<'
+ && (logend = Ustrstr(filter_message, ">>"))
+ )
{
- 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 */
+ 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 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. */
+ log_write(0, LOG_MAIN, "cancelled by system filter%s%.*s", colon, loglen,
+ logmsg);
+ }
- addr->unique =
- string_sprintf("%s:%s", addr->address, addr->parent->unique +
- (testflag(addr->parent, af_homonym)? 3:0));
+ /* Delivery can be restricted only to those recipients (if any) that the
+ filter specified. */
- addr->address_retry_key = addr->domain_retry_key =
- string_sprintf("T:%s", addr->unique);
+ 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 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. */
+ /* 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. */
- if (addr->address[0] == '>')
- {
- while (tree_search(tree_duplicates, addr->unique))
- addr->unique = string_sprintf(">%s", addr->unique);
- }
+ if (addr_new)
+ {
+ int uid = system_filter_uid_set ? system_filter_uid : geteuid();
+ int gid = system_filter_gid_set ? system_filter_gid : getegid();
- 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;
- }
+ /* 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);
- /* Check for previous delivery */
+ parent->domain = string_copylc(qualify_domain_recipient);
+ parent->local_part = US"system-filter";
- 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;
- }
+ /* 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. */
- /* Save for checking future duplicates */
+ while (p)
+ {
+ 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;
- tree_add_duplicate(addr->unique, addr);
+ 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);
- /* Set local part and domain */
+ /* Find the name of the system filter's appropriate pfr transport */
- addr->local_part = addr->address;
- addr->domain = addr->parent->domain;
+ 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;
+ }
- /* Ensure that the delivery is permitted. */
+ /* Now find the actual transport, first expanding the name. We have
+ set address_file or address_pipe above. */
- if (testflag(addr, af_file))
- {
- if (!testflag(addr, af_allow_file))
+ if (tpname)
{
- 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 */
+ 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 if (addr->address[0] == '|')
- {
- if (!testflag(addr, af_allow_pipe))
+ else
+ p->message = string_sprintf("system_filter_%s_transport is unset",
+ type);
+
+ if (tpname)
{
- 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 */
+ 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);
}
- }
- 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 */
- }
- /* 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 we couldn't set up a transport, defer the delivery, putting the
+ error on the panic log as well as the main log. */
- if (addr->basic_errno == ERRNO_BADTRANSPORT)
- {
- (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
- continue;
- }
+ 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 */
- /* 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**". */
+ /* Either a non-pfr delivery, or we found a transport */
- 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, EXIM_DTYPE_TRANSPORT, '=');
- addr->transport->name = save;
- continue; /* with the next new address */
- }
+ DEBUG(D_deliver|D_filter)
+ debug_printf("system filter added %s\n", p->address);
- /* Pipe, file, or autoreply delivery is to go ahead as a normal local
- delivery. */
+ addr_last = p;
+ p = p->next;
+ } /* Loop through all addr_new addresses */
+ }
+ }
- 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. */
+/* 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.
- 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;
- }
+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.
- /* Check to see if the domain is held. If so, proceed only if the
- delivery was forced by hand. */
+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. */
- 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 (process_recipients != RECIP_IGNORE)
+ for (i = 0; i < recipients_count; i++)
+ if (!tree_search(tree_nonrecipients, recipients_list[i].address))
{
- 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;
- }
+ recipient_item * r = recipients_list + i;
+ address_item * new = deliver_make_addr(r->address, FALSE);
- /* 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. */
+ 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
- for (parent = addr->parent; parent; parent = parent->parent)
- if (strcmpic(addr->address, parent->address) == 0) break;
+ if (r->pno >= 0)
+ new->onetime_parent = recipients_list[r->pno].address;
- /* 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 DSN support is enabled, set the dsn flags and the original receipt
+ to be passed on to other DSN enabled MTAs */
- 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);
- }
+ 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);
- /* Ensure that the domain in the unique field is lower cased, because
- domains are always handled caselessly. */
+ switch (process_recipients)
+ {
+ /* RECIP_DEFER is set when a system filter freezes a message. */
- p = Ustrrchr(addr->unique, '@');
- while (*p != 0) { *p = tolower(*p); p++; }
+ case RECIP_DEFER:
+ new->next = addr_defer;
+ addr_defer = new;
+ break;
- DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
- if (tree_search(tree_nonrecipients, addr->unique))
- {
- DEBUG(D_deliver|D_route)
- debug_printf("%s was previously delivered: discarded\n", addr->unique);
- child_done(addr, tod_stamp(tod_log));
- continue;
- }
+ /* RECIP_FAIL_FILTER is set when a system filter has obeyed a "fail"
+ command. */
- /* 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. */
+ case RECIP_FAIL_FILTER:
+ new->message =
+ filter_message ? filter_message : US"delivery cancelled";
+ setflag(new, af_pass_message);
+ goto RECIP_QUEUE_FAILED; /* below */
- addr->domain_retry_key = string_sprintf("R:%s", addr->domain);
- addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part,
- addr->domain);
- 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
- )
- domain_retry_record = NULL; /* Ignore if too old */
+ /* 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. */
- 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 */
+ case RECIP_FAIL_TIMEOUT:
+ new->message = US"delivery cancelled; message timed out";
+ goto RECIP_QUEUE_FAILED; /* below */
- 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)
- address_retry_record = NULL; /* Ignore if too old */
- }
- }
- else
- domain_retry_record = address_retry_record = NULL;
- 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");
- }
+ /* RECIP_FAIL is set when -Mg has been used. */
- /* 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.
+ 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 reason for not doing the same for address retries is that they normally
- arise from 4xx responses, not DNS timeouts. */
+ /* 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. */
- 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);
- }
+ RECIP_QUEUE_FAILED:
+ if (*sender_address)
+ {
+ new->next = addr_failed;
+ addr_failed = new;
+ }
+ break;
- /* 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_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 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_LOOP:
+ new->message = US"Too many \"Received\" headers - suspected mail loop";
+ post_process_one(new, FAIL, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ break;
- 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. */
+ /* Value should be RECIP_ACCEPT; take this as the safe default. */
- 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, EXIM_DTYPE_ROUTER, 0);
- }
+ default:
+ if (!addr_new) addr_new = new; else addr_last->next = new;
+ addr_last = new;
+ break;
+ }
- /* The domain is OK for routing. Remember if retry data exists so it
- can be cleaned up after a successful delivery. */
+#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;
- 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);
+ 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
}
- }
- /* 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. */
+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"");
+ }
- if (dbm_file) dbfn_close(dbm_file);
+/* Set up the buffers used for copying over the file when delivering. */
- /* 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. */
+deliver_in_buffer = store_malloc(DELIVER_IN_BUFFER_SIZE);
+deliver_out_buffer = store_malloc(DELIVER_OUT_BUFFER_SIZE);
- 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, 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_route = okaddr;
- }
+/* Until there are no more new addresses, handle each one as follows:
- /* Now route those addresses that are not deferred. */
+ . 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.
- 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;
+ . 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.
- /* Just in case some router parameter refers to it. */
+ . Handle the percent hack for those domains for which it is valid.
- if (!(return_path = addr->prop.errors_address))
- return_path = sender_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.
- /* 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. */
+ . 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 = 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);
+ . 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.
- /* 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 new addresses have been generated by the routers, da capo.
+*/
- 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);
- }
+f.header_rewritten = FALSE; /* No headers rewritten yet */
+while (addr_new) /* Loop until all addresses dealt with */
+ {
+ address_item * addr, * parent;
- /* 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. */
+ /* Failure to open the retry database is treated the same as if it does
+ not exist. In both cases, dbm_file is NULL. */
- if (rc == DISCARD)
- {
- address_done(addr, tod_stamp(tod_log));
- continue; /* route next address */
- }
+ if (!(dbm_file = dbfn_open(US"retry", O_RDONLY, &dbblock, FALSE, TRUE)))
+ DEBUG(D_deliver|D_retry|D_route|D_hints_lookup)
+ debug_printf("no retry data available\n");
- /* The address is finished with (failed or deferred). */
+ /* Scan the current batch of new addresses, to handle pipes, files and
+ autoreplies, and determine which others are ready for routing. */
- if (rc != OK)
- {
- (void)post_process_one(addr, rc, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
- continue; /* route next address */
- }
+ while (addr_new)
+ {
+ int rc;
+ tree_node * tnode;
+ dbdata_retry * domain_retry_record, * address_retry_record;
- /* 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. */
+ addr = addr_new;
+ addr_new = addr->next;
- if ( addr->unique != old_unique
- && tree_search(tree_nonrecipients, addr->unique) != 0
- )
+ DEBUG(D_deliver|D_retry|D_route)
{
- 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_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n");
+ debug_printf("Considering: %s\n", addr->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. */
+ /* Handle generated address that is a pipe or a file or an autoreply. */
- if ( addr_remote == addr
- && addr->router->same_domain_copy_routing
- && !addr->prop.extra_headers
- && !addr->prop.remove_headers
- && old_domain == addr->domain
- )
+ if (testflag(addr, af_pfr))
{
- address_item **chain = &addr_route;
- while (*chain)
+ /* 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))
{
- address_item *addr2 = *chain;
- if (Ustrcmp(addr2->domain, addr->domain) != 0)
- {
- chain = &(addr2->next);
- continue;
- }
+ 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 */
+ }
- /* Found a suitable address; take it off the routing list and add it to
- the remote delivery list. */
+ /* 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. */
- *chain = addr2->next;
- addr2->next = addr_remote;
- addr_remote = addr2;
+ addr->unique =
+ string_sprintf("%s:%s", addr->address, addr->parent->unique +
+ (testflag(addr->parent, af_homonym)? 3:0));
- /* Copy the routing data */
+ addr->address_retry_key = addr->domain_retry_key =
+ string_sprintf("T:%s", addr->unique);
- 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);
+ /* 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. */
+
+ if (addr->address[0] == '>')
+ while (tree_search(tree_duplicates, addr->unique))
+ addr->unique = string_sprintf(">%s", addr->unique);
+ else if ((tnode = tree_search(tree_duplicates, addr->unique)))
+ {
DEBUG(D_deliver|D_route)
- debug_printf(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n"
- "routing %s\n"
- "Routing for %s copied from %s\n",
- addr2->address, addr2->address, addr->address);
+ debug_printf("%s is a duplicate address: discarded\n", addr->address);
+ addr->dupof = tnode->data.ptr;
+ addr->next = addr_duplicate;
+ addr_duplicate = addr;
+ continue;
}
- }
- } /* 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. */
-
-
-/* Debugging: show the results of the routing */
-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);
-
- debug_printf(" Remote deliveries:\n");
- for (p = addr_remote; p; p = p->next)
- debug_printf(" %s\n", p->address);
-
- debug_printf(" Failed addresses:\n");
- for (p = addr_failed; p; p = p->next)
- debug_printf(" %s\n", p->address);
+ DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
- debug_printf(" Deferred addresses:\n");
- for (p = addr_defer; p; p = p->next)
- debug_printf(" %s\n", p->address);
- }
+ /* Check for previous delivery */
-/* Free any resources that were cached during routing. */
+ 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;
+ }
-search_tidyup();
-route_tidyup();
+ /* Save for checking future duplicates */
-/* These two variables are set only during routing, after check_local_user.
-Ensure they are not set in transports. */
+ tree_add_duplicate(addr->unique, addr);
-local_user_gid = (gid_t)(-1);
-local_user_uid = (uid_t)(-1);
+ /* Set local part and domain */
-/* 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. */
+ addr->local_part = addr->address;
+ addr->domain = addr->parent->domain;
-do_duplicate_check(&addr_local);
-do_duplicate_check(&addr_remote);
+ /* Ensure that the delivery is permitted. */
-/* 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. */
+ 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 */
+ }
-if ( mua_wrapper
- && (addr_local || addr_failed || addr_defer)
- )
- {
- address_item *addr;
- uschar *which, *colon, *msg;
+ /* 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_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 (addr->basic_errno == ERRNO_BADTRANSPORT)
+ {
+ (void)post_process_one(addr, DEFER, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue;
+ }
- while (addr->parent) addr = addr->parent;
+ /* 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->message)
- {
- colon = US": ";
- msg = addr->message;
- }
- else colon = msg = US"";
+ 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->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 */
+ }
- /* 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. */
+ /* Pipe, file, or autoreply delivery is to go ahead as a normal local
+ delivery. */
- if (addr != addr_failed)
- log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery",
- addr->address, which);
+ 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 */
+ }
- /* Always write an error to the caller */
+ /* 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. */
- fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address,
- which, colon, msg);
+ 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;
+ }
- final_yield = DELIVER_MUA_FAILED;
- addr_failed = addr_defer = NULL; /* So that we remove the message */
- goto DELIVERY_TIDYUP;
- }
+ /* Check to see if the domain is held. If so, proceed only if the
+ delivery was forced by hand. */
+ 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;
+ }
-/* If this is a run to continue deliveries to an external channel that is
-already set up, defer any local deliveries. */
+ /* 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. */
-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;
- }
+ for (parent = addr->parent; parent; parent = parent->parent)
+ if (strcmpic(addr->address, parent->address) == 0) break;
+ /* 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. */
-/* 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.
+ 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 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. */
+ /* Ensure that the domain in the unique field is lower cased, because
+ domains are always handled caselessly. */
-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;
- }
+ for (uschar * p = Ustrrchr(addr->unique, '@'); *p; p++) *p = tolower(*p);
+ DEBUG(D_deliver|D_route) debug_printf("unique = %s\n", addr->unique);
-/* 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.
+ if (tree_search(tree_nonrecipients, addr->unique))
+ {
+ DEBUG(D_deliver|D_route)
+ debug_printf("%s was previously delivered: discarded\n", addr->unique);
+ child_done(addr, tod_stamp(tod_log));
+ continue;
+ }
-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. */
+ /* 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 (addr_local || addr_remote)
- {
- if (journal_fd < 0)
- {
- uschar * fname = spool_fname(US"input", message_subdir, id, US"-J");
+ addr->domain_retry_key = string_sprintf("R:%s", addr->domain);
+ addr->address_retry_key = string_sprintf("R:%s@%s", addr->local_part,
+ addr->domain);
- if ((journal_fd = Uopen(fname,
-#ifdef O_CLOEXEC
- O_CLOEXEC |
-#endif
- O_WRONLY|O_APPEND|O_CREAT|O_EXCL, SPOOL_MODE)) < 0)
+ if (dbm_file)
{
- log_write(0, LOG_MAIN|LOG_PANIC, "Couldn't open journal file %s: %s",
- fname, strerror(errno));
- return DELIVER_NOT_ATTEMPTED;
- }
+ 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("domain retry record present but expired\n");
+ domain_retry_record = NULL; /* Ignore if too old */
+ }
- /* 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. */
+ 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("address retry record present but expired\n");
+ address_retry_record = NULL; /* Ignore if too old */
+ }
- 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
- )
- {
- 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;
+ 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("address<sender> retry record present but expired\n");
+ address_retry_record = NULL; /* Ignore if too old */
+ }
+ }
}
- }
- }
-else if (journal_fd >= 0)
- {
- close(journal_fd);
- journal_fd = -1;
- }
+ else
+ domain_retry_record = address_retry_record = NULL;
+ DEBUG(D_deliver|D_retry)
+ {
+ if (!domain_retry_record)
+ debug_printf("no domain retry record\n");
+ else
+ debug_printf("have domain retry record; next_try = now%+d\n",
+ f.running_in_test_harness ? 0 :
+ (int)(domain_retry_record->next_try - now));
+ if (!address_retry_record)
+ debug_printf("no address retry record\n");
+ else
+ debug_printf("have address retry record; next_try = now%+d\n",
+ f.running_in_test_harness ? 0 :
+ (int)(address_retry_record->next_try - now));
+ }
-/* 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. */
+ /* 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.
-/* 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. */
+ The reason for not doing the same for address retries is that they normally
+ arise from 4xx responses, not DNS timeouts. */
-if (!regex_IGNOREQUOTA)
- regex_IGNOREQUOTA =
- regex_must_compile(US"\\n250[\\s\\-]IGNOREQUOTA(\\s|\\n|$)", FALSE, TRUE);
+ 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);
-/* Handle local deliveries */
+ addr->message = domain_retry_record->text;
+ setflag(addr, af_pass_message);
+ }
-if (addr_local)
- {
- DEBUG(D_deliver|D_transport)
- debug_printf(">>>>>>>>>>>>>>>> Local deliveries >>>>>>>>>>>>>>>>\n");
- do_local_deliveries();
- disable_logging = FALSE;
- }
+ /* 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.
-/* If queue_run_local is set, we do not want to attempt any remote deliveries,
-so just queue them all. */
+ 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 (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);
- }
+ 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.
-/* Handle remote deliveries */
+ 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.
-if (addr_remote)
- {
- DEBUG(D_deliver|D_transport)
- debug_printf(">>>>>>>>>>>>>>>> Remote deliveries >>>>>>>>>>>>>>>>\n");
+ 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. */
- /* Precompile some regex that are used to recognize parameters in response
- to an EHLO command, if they aren't already compiled. */
+ 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);
- deliver_init();
+ /* 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. */
- /* 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. */
+ addr->message = domain_retry_record
+ ? domain_retry_record->text : address_retry_record->text;
+ setflag(addr, af_pass_message);
+ }
- 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");
+ /* The domain is OK for routing. Remember if retry data exists so it
+ can be cleaned up after a successful delivery. */
- final_yield = DELIVER_MUA_FAILED;
- addr_failed = addr_defer = NULL; /* So that we remove the message */
- goto DELIVERY_TIDYUP;
+ 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);
+ }
}
- /* 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). */
+ /* 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 (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;
- }
+ if (dbm_file) dbfn_close(dbm_file);
+ /* 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. */
-/* All deliveries are now complete. Ignore SIGTERM during this tidying up
-phase, to minimize cases of half-done things. */
+ if (!f.deliver_force && queue_domains)
+ {
+ address_item *okaddr = NULL;
+ while (addr_route)
+ {
+ address_item *addr = addr_route;
+ addr_route = addr->next;
-DEBUG(D_deliver)
- debug_printf(">>>>>>>>>>>>>>>> deliveries are done >>>>>>>>>>>>>>>>\n");
-cancel_cutthrough_connection(TRUE, US"deliveries are done");
+ 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);
+ }
+ }
-/* Root privilege is no longer needed */
+ addr_route = okaddr;
+ }
-exim_setugid(exim_uid, exim_gid, FALSE, US"post-delivery tidying");
+ /* Now route those addresses that are not deferred. */
-set_process_info("tidying up after delivering %s", message_id);
-signal(SIGTERM, SIG_IGN);
+ 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;
-/* 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. */
+ /* Just in case some router parameter refers to it. */
-if (mua_wrapper)
- {
- if (addr_defer)
- {
- address_item *addr, *nextaddr;
- for (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 (!(return_path = addr->prop.errors_address))
+ return_path = sender_address;
- /* Now all should either have succeeded or failed. */
+ /* 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 (!addr_failed)
- final_yield = DELIVER_MUA_SUCCEEDED;
- else
- {
- host_item * host;
- uschar *s = addr_failed->user_message;
+ 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);
- if (!s) s = addr_failed->message;
+ /* 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. */
- fprintf(stderr, "Delivery failed: ");
- if (addr_failed->basic_errno > 0)
+ else if (testflag(addr, af_dr_retry_exists))
{
- fprintf(stderr, "%s", strerror(addr_failed->basic_errno));
- if (s) fprintf(stderr, ": ");
+ 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);
}
- 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");
-
- final_yield = DELIVER_MUA_FAILED;
- addr_failed = NULL;
- }
- }
-/* 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. */
+ /* 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. */
-else if (!dont_deliver)
- retry_update(&addr_defer, &addr_failed, &addr_succeed);
+ if (rc == DISCARD)
+ {
+ address_done(addr, tod_stamp(tod_log));
+ continue; /* route next address */
+ }
-/* Send DSN for successful messages if requested */
-addr_senddsn = NULL;
+ /* The address is finished with (failed or deferred). */
-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 ? addr_dsntmp->router->name : US"(unknown)",
- addr_dsntmp->address,
- sender_address,
- addr_dsntmp->dsn_orcpt ? addr_dsntmp->dsn_orcpt : US"NULL",
- addr_dsntmp->dsn_flags,
- dsn_envid ? dsn_envid : US"NULL", dsn_ret,
- addr_dsntmp->address,
- addr_dsntmp->dsn_aware
- );
+ if (rc != OK)
+ {
+ (void)post_process_one(addr, rc, LOG_MAIN, EXIM_DTYPE_ROUTER, 0);
+ continue; /* route next address */
+ }
- /* 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_senddsn;
- addr_senddsn = store_get(sizeof(address_item));
- *addr_senddsn = *addr_dsntmp;
- addr_senddsn->next = addr_next;
- }
- else
- DEBUG(D_deliver) debug_printf("DSN: not sending DSN success message\n");
- }
+ /* 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 (addr_senddsn)
- {
- pid_t pid;
- int fd;
+ 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;
+ }
- /* create exim process to send message */
- pid = child_open_exim(&fd);
+ /* 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. */
- DEBUG(D_deliver) debug_printf("DSN: child_open_exim returns: %d\n", pid);
+ 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 (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));
+ /* Found a suitable address; take it off the routing list and add it to
+ the remote delivery list. */
- 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}};
+ *chain = addr2->next;
+ addr2->next = addr_remote;
+ addr_remote = addr2;
- DEBUG(D_deliver)
- debug_printf("sending error message to: %s\n", sender_address);
+ /* Copy the routing data */
- /* 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);
+ 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);
- if (errors_reply_to)
- fprintf(f, "Reply-To: %s\n", errors_reply_to);
+ 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, "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"
- "--%s\n"
- "Content-type: text/plain; charset=us-ascii\n\n"
+/* Debugging: show the results of the routing */
- "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);
+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)
- 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_printf(" Remote deliveries:\n");
+ for (address_item * p = addr_remote; p; p = p->next)
+ debug_printf(" %s\n", p->address);
- fprintf(f, "--%s\n"
- "Content-type: message/delivery-status\n\n"
- "Reporting-MTA: dns; %s\n",
- bound, smtp_active_hostname);
+ debug_printf(" Failed addresses:\n");
+ for (address_item * p = addr_failed; p; p = p->next)
+ debug_printf(" %s\n", p->address);
- 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_printf(" Deferred addresses:\n");
+ for (address_item * p = addr_defer; 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);
+/* Free any resources that were cached during routing. */
- fprintf(f, "Action: delivered\n"
- "Final-Recipient: rfc822;%s\n"
- "Status: 2.0.0\n",
- addr_dsntmp->address);
+search_tidyup();
+route_tidyup();
- 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");
- }
+/* These two variables are set only during routing, after check_local_user.
+Ensure they are not set in transports. */
- fprintf(f, "--%s\nContent-type: text/rfc822-headers\n\n", bound);
+local_user_gid = (gid_t)(-1);
+local_user_uid = (uid_t)(-1);
- fflush(f);
- transport_filter_argv = NULL; /* Just in case */
- return_path = sender_address; /* In case not previously set */
+/* 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. */
- /* Write the original email out */
+do_duplicate_check(&addr_local);
+do_duplicate_check(&addr_remote);
- tctx.u.fd = fileno(f);
- tctx.options = topt_add_return_path | topt_no_body;
- transport_write_message(&tctx, 0);
- fflush(f);
+/* 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. */
- fprintf(f,"\n--%s--\n", bound);
+if ( mua_wrapper
+ && (addr_local || addr_failed || addr_defer)
+ )
+ {
+ address_item *addr;
+ uschar *which, *colon, *msg;
- fflush(f);
- fclose(f);
- rc = child_close(pid, 0); /* Waits for child to close, no timeout */
+ 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 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. */
-while (addr_failed)
- {
- 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;
+ while (addr->parent) addr = addr->parent;
- /* 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->message)
+ {
+ colon = US": ";
+ msg = addr->message;
+ }
+ else colon = msg = US"";
- disable_logging = FALSE;
- if (addr_failed->transport)
- disable_logging = addr_failed->transport->disable_logging;
+ /* 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. */
- DEBUG(D_deliver)
- debug_printf("processing failed address %s\n", addr_failed->address);
+ if (addr != addr_failed)
+ log_write(0, LOG_MAIN, "** %s routing yielded a %s delivery",
+ addr->address, which);
- /* There are only two ways an address in a bounce message can get here:
+ /* Always write an error to the caller */
- (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.
+ fprintf(stderr, "routing %s yielded a %s delivery%s%s\n", addr->address,
+ which, colon, msg);
- (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 = "").
+ final_yield = DELIVER_MUA_FAILED;
+ addr_failed = addr_defer = NULL; /* So that we remove the message */
+ goto DELIVERY_TIDYUP;
+ }
- If neither of these cases obtains, something has gone wrong. Log the
- incident, but then ignore the error. */
- 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)");
+/* If this is a run to continue deliveries to an external channel that is
+already set up, defer any local deliveries.
- addr_failed->prop.ignore_error = TRUE;
- }
+jgh 2020/12/20: I don't see why; locals should be quick.
+The defer goes back to version 1.62 in 1997. A local being still deliverable
+during a continued run might result from something like a defer during the
+original delivery, eg. in a DB lookup. Unlikely but possible.
- /* 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. */
+To avoid delaying a local when combined with a callout-hold for a remote
+delivery, test continue_sequence rather than continue_transport. */
- if ( addr_failed->prop.ignore_error
- || ( addr_failed->dsn_flags & rf_dsnflags
- && (addr_failed->dsn_flags & rf_notify_failure) != rf_notify_failure
- ) )
+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)
{
- addr = addr_failed;
- addr_failed = addr->next;
- if (addr->return_filename) Uunlink(addr->return_filename);
-
- 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">");
-
- address_done(addr, logtod);
- child_done(addr, logtod);
- /* Panic-dies on error */
- (void)spool_write_header(message_id, SW_DELIVERING, NULL);
+ 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 accessed 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)
- {
- fprintf(f, "Remote-MTA: dns; %s\n", hu->name);
-#ifdef EXPERIMENTAL_DSN_INFO
- {
- const uschar * s;
- 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. 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.u.fd = fileno(f);
- tctx.tblock = &tb;
- tctx.options = topt;
- tb.add_headers = dsnnotifyhdr;
-
- transport_write_message(&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.tv_sec < 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 */
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
int show_time;
int queue_time = time(NULL) - received_time.tv_sec;
- /* 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;
- }
- }
+ queue_time = test_harness_fudged_queue_time(queue_time);
/* See how many warnings we should have sent by now */
DEBUG(D_deliver)
{
- debug_printf("time on queue = %s\n", readconf_printtime(queue_time));
+ 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);
}
have been. */
if (warning_count < count)
- {
- 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 ");
-
- 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");
- }
-
- /* List the addresses, with error information if allowed */
-
- /* 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);
-
- /* 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 (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.u.fd = fileno(f);
- 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(&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 */
- }
- }
- }
+ if (send_warning_message(recipients, queue_time, show_time))
+ {
+ warning_count = count;
+ update_spool = TRUE; /* Ensure spool rewritten */
+ }
}
/* Clear deliver_domain */
/* 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);
}
/* 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
/* 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)
{
#ifdef EXIM_TFO_PROBE
tfo_probe();
#else
-tcp_fastopen_ok = TRUE;
-#endif
-
-
-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);
-
-# ifdef EXPERIMENTAL_REQUIRETLS
-if (!regex_REQUIRETLS) regex_REQUIRETLS =
- regex_must_compile(US"\\n250[\\s\\-]REQUIRETLS(\\s|\\n|$)", FALSE, TRUE);
-# endif
+f.tcp_fastopen_ok = TRUE;
#endif
-
-if (!regex_CHUNKING) regex_CHUNKING =
- regex_must_compile(US"\\n250[\\s\\-]CHUNKING(\\s|\\n|$)", 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);
-#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);
}
-uschar *
-deliver_get_sender_address (uschar * id)
-{
-int rc;
-uschar * new_sender_address,
- * save_sender_address;
-BOOL save_qr = queue_running;
-uschar * spoolname;
-
-/* make spool_open_datafile non-noisy on fail */
-
-queue_running = TRUE;
-
-/* Side effect: message_subdir is set for the (possibly split) spool directory */
-
-deliver_datafile = spool_open_datafile(id);
-queue_running = save_qr;
-if (deliver_datafile < 0)
- return NULL;
-
-/* 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) */
-
-spoolname = string_sprintf("%s-H", id);
-save_sender_address = sender_address;
-
-rc = spool_read_header(spoolname, TRUE, TRUE);
-
-new_sender_address = sender_address;
-sender_address = save_sender_address;
-
-if (rc != spool_read_OK)
- return NULL;
-
-assert(new_sender_address);
-
-(void)close(deliver_datafile);
-deliver_datafile = -1;
-
-return new_sender_address;
-}
-
+/* 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. */
void
delivery_re_exec(int exec_type)
smtp_peer_options = cutthrough.peer_options;
continue_sequence = 0;
-#ifdef SUPPORT_TLS
+#ifndef DISABLE_TLS
if (cutthrough.is_tls)
{
int pfd[2], pid;
goto fail;
where = US"fork";
- if ((pid = fork()) < 0)
+ testharness_pause_ms(150);
+ if ((pid = exim_fork(US"tls-proxy-interproc")) < 0)
goto fail;
- else if (pid == 0) /* child: fork again to totally disconnect */
+ if (pid == 0) /* child: will fork again to totally disconnect */
{
- if (running_in_test_harness) millisleep(100); /* let parent debug out */
- /* does not return */
smtp_proxy_tls(cutthrough.cctx.tls_ctx, big_buffer, big_buffer_size,
- pfd, 5*60);
+ pfd, 5*60, cutthrough.host.name);
+ /* does not return */
}
- DEBUG(D_transport) debug_printf("proxy-proc inter-pid %d\n", pid);
close(pfd[0]);
waitpid(pid, NULL, 0);
(void) close(channel_fd); /* release the client socket */
}
return; /* compiler quietening; control does not reach here. */
+#ifndef DISABLE_TLS
fail:
log_write(0,
LOG_MAIN | (exec_type == CEE_EXEC_EXIT ? LOG_PANIC : LOG_PANIC_DIE),
Note: this must be _exit(), not exit(). */
_exit(EX_EXECFAILED);
+#endif
}
/* vi: aw ai sw=2
git://git.exim.org / exim.git / blobdiff