-/* $Cambridge: exim/src/src/transports/smtp.c,v 1.34 2007/02/06 14:19:00 ph10 Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2007 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
/* See the file NOTICE for conditions of use and distribution. */
#include "../exim.h"
#define PENDING_DEFER (PENDING + DEFER)
#define PENDING_OK (PENDING + OK)
+#define DELIVER_BUFFER_SIZE 4096
+
/* Options specific to the smtp transport. This transport also supports LMTP
over TCP/IP. The options must be in alphabetic order (note that "_" comes
to be publicly visible; these are flagged with opt_public. */
optionlist smtp_transport_options[] = {
+ { "*expand_multi_domain", opt_stringptr | opt_hidden | opt_public,
+ (void *)offsetof(transport_instance, expand_multi_domain) },
+ { "*expand_retry_include_ip_address", opt_stringptr | opt_hidden,
+ (void *)(offsetof(smtp_transport_options_block, expand_retry_include_ip_address)) },
+
{ "address_retry_include_sender", opt_bool,
(void *)offsetof(smtp_transport_options_block, address_retry_include_sender) },
{ "allow_localhost", opt_bool,
(void *)offsetof(smtp_transport_options_block, data_timeout) },
{ "delay_after_cutoff", opt_bool,
(void *)offsetof(smtp_transport_options_block, delay_after_cutoff) },
-#ifdef EXPERIMENTAL_DOMAINKEYS
- { "dk_canon", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, dk_canon) },
- { "dk_domain", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, dk_domain) },
- { "dk_headers", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, dk_headers) },
- { "dk_private_key", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, dk_private_key) },
- { "dk_selector", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, dk_selector) },
- { "dk_strict", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, dk_strict) },
+#ifndef DISABLE_DKIM
+ { "dkim_canon", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dkim.dkim_canon) },
+ { "dkim_domain", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dkim.dkim_domain) },
+ { "dkim_private_key", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dkim.dkim_private_key) },
+ { "dkim_selector", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dkim.dkim_selector) },
+ { "dkim_sign_headers", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dkim.dkim_sign_headers) },
+ { "dkim_strict", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dkim.dkim_strict) },
#endif
{ "dns_qualify_single", opt_bool,
(void *)offsetof(smtp_transport_options_block, dns_qualify_single) },
{ "dns_search_parents", opt_bool,
(void *)offsetof(smtp_transport_options_block, dns_search_parents) },
+ { "dnssec_request_domains", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dnssec.request) },
+ { "dnssec_require_domains", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dnssec.require) },
+ { "dscp", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, dscp) },
{ "fallback_hosts", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, fallback_hosts) },
{ "final_timeout", opt_time,
(void *)offsetof(smtp_transport_options_block, final_timeout) },
{ "gethostbyname", opt_bool,
(void *)offsetof(smtp_transport_options_block, gethostbyname) },
- #ifdef SUPPORT_TLS
- { "gnutls_require_kx", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, gnutls_require_kx) },
- { "gnutls_require_mac", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, gnutls_require_mac) },
- { "gnutls_require_protocols", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, gnutls_require_proto) },
- #endif
{ "helo_data", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, helo_data) },
{ "hosts", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts) },
{ "hosts_avoid_esmtp", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_avoid_esmtp) },
- #ifdef SUPPORT_TLS
+ { "hosts_avoid_pipelining", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_avoid_pipelining) },
+#ifdef SUPPORT_TLS
{ "hosts_avoid_tls", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_avoid_tls) },
- #endif
+#endif
{ "hosts_max_try", opt_int,
(void *)offsetof(smtp_transport_options_block, hosts_max_try) },
{ "hosts_max_try_hardlimit", opt_int,
(void *)offsetof(smtp_transport_options_block, hosts_max_try_hardlimit) },
- #ifdef SUPPORT_TLS
+#ifdef SUPPORT_TLS
{ "hosts_nopass_tls", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_nopass_tls) },
- #endif
+#endif
{ "hosts_override", opt_bool,
(void *)offsetof(smtp_transport_options_block, hosts_override) },
{ "hosts_randomize", opt_bool,
(void *)offsetof(smtp_transport_options_block, hosts_randomize) },
+#if defined(SUPPORT_TLS) && !defined(DISABLE_OCSP)
+ { "hosts_request_ocsp", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_request_ocsp) },
+#endif
{ "hosts_require_auth", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_require_auth) },
- #ifdef SUPPORT_TLS
+#ifdef SUPPORT_TLS
+# ifdef EXPERIMENTAL_DANE
+ { "hosts_require_dane", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_require_dane) },
+# endif
+# ifndef DISABLE_OCSP
+ { "hosts_require_ocsp", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_require_ocsp) },
+# endif
{ "hosts_require_tls", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_require_tls) },
- #endif
+#endif
{ "hosts_try_auth", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, hosts_try_auth) },
+ { "hosts_try_chunking", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_try_chunking) },
+#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
+ { "hosts_try_dane", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_try_dane) },
+#endif
+ { "hosts_try_fastopen", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_try_fastopen) },
+#ifndef DISABLE_PRDR
+ { "hosts_try_prdr", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_try_prdr) },
+#endif
+#ifdef SUPPORT_TLS
+ { "hosts_verify_avoid_tls", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, hosts_verify_avoid_tls) },
+#endif
{ "interface", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, interface) },
{ "keepalive", opt_bool,
(void *)offsetof(smtp_transport_options_block, lmtp_ignore_quota) },
{ "max_rcpt", opt_int | opt_public,
(void *)offsetof(transport_instance, max_addresses) },
- { "multi_domain", opt_bool | opt_public,
+ { "multi_domain", opt_expand_bool | opt_public,
(void *)offsetof(transport_instance, multi_domain) },
{ "port", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, port) },
{ "protocol", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, protocol) },
- { "retry_include_ip_address", opt_bool,
+ { "retry_include_ip_address", opt_expand_bool,
(void *)offsetof(smtp_transport_options_block, retry_include_ip_address) },
{ "serialize_hosts", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, serialize_hosts) },
{ "size_addition", opt_int,
(void *)offsetof(smtp_transport_options_block, size_addition) }
- #ifdef SUPPORT_TLS
+#ifdef SUPPORT_SOCKS
+ ,{ "socks_proxy", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, socks_proxy) }
+#endif
+#ifdef SUPPORT_TLS
,{ "tls_certificate", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_certificate) },
{ "tls_crl", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_crl) },
+ { "tls_dh_min_bits", opt_int,
+ (void *)offsetof(smtp_transport_options_block, tls_dh_min_bits) },
{ "tls_privatekey", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_privatekey) },
- { "tls_require_ciphers", opt_stringptr,
+ { "tls_require_ciphers", opt_stringptr,
(void *)offsetof(smtp_transport_options_block, tls_require_ciphers) },
+ { "tls_sni", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, tls_sni) },
{ "tls_tempfail_tryclear", opt_bool,
(void *)offsetof(smtp_transport_options_block, tls_tempfail_tryclear) },
+ { "tls_try_verify_hosts", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, tls_try_verify_hosts) },
+ { "tls_verify_cert_hostnames", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block,tls_verify_cert_hostnames)},
{ "tls_verify_certificates", opt_stringptr,
- (void *)offsetof(smtp_transport_options_block, tls_verify_certificates) }
- #endif
+ (void *)offsetof(smtp_transport_options_block, tls_verify_certificates) },
+ { "tls_verify_hosts", opt_stringptr,
+ (void *)offsetof(smtp_transport_options_block, tls_verify_hosts) }
+#endif
};
/* Size of the options list. An extern variable has to be used so that its
NULL, /* interface */
NULL, /* port */
US"smtp", /* protocol */
+ NULL, /* DSCP */
NULL, /* serialize_hosts */
NULL, /* hosts_try_auth */
NULL, /* hosts_require_auth */
+ US"*", /* hosts_try_chunking */
+#ifdef EXPERIMENTAL_DANE
+ NULL, /* hosts_try_dane */
+ NULL, /* hosts_require_dane */
+#endif
+ NULL, /* hosts_try_fastopen */
+#ifndef DISABLE_PRDR
+ US"*", /* hosts_try_prdr */
+#endif
+#ifndef DISABLE_OCSP
+ US"*", /* hosts_request_ocsp (except under DANE; tls_client_start()) */
+ NULL, /* hosts_require_ocsp */
+#endif
NULL, /* hosts_require_tls */
NULL, /* hosts_avoid_tls */
+ NULL, /* hosts_verify_avoid_tls */
+ NULL, /* hosts_avoid_pipelining */
NULL, /* hosts_avoid_esmtp */
NULL, /* hosts_nopass_tls */
5*60, /* command_timeout */
FALSE, /* gethostbyname */
TRUE, /* dns_qualify_single */
FALSE, /* dns_search_parents */
+ { NULL, NULL }, /* dnssec_domains {request,require} */
TRUE, /* delay_after_cutoff */
FALSE, /* hosts_override */
FALSE, /* hosts_randomize */
TRUE, /* keepalive */
FALSE, /* lmtp_ignore_quota */
+ NULL, /* expand_retry_include_ip_address */
TRUE /* retry_include_ip_address */
- #ifdef SUPPORT_TLS
+#ifdef SUPPORT_SOCKS
+ ,NULL /* socks_proxy */
+#endif
+#ifdef SUPPORT_TLS
,NULL, /* tls_certificate */
NULL, /* tls_crl */
NULL, /* tls_privatekey */
NULL, /* tls_require_ciphers */
- NULL, /* gnutls_require_kx */
- NULL, /* gnutls_require_mac */
- NULL, /* gnutls_require_proto */
- NULL, /* tls_verify_certificates */
- TRUE /* tls_tempfail_tryclear */
- #endif
- #ifdef EXPERIMENTAL_DOMAINKEYS
- ,NULL, /* dk_canon */
- NULL, /* dk_domain */
- NULL, /* dk_headers */
- NULL, /* dk_private_key */
- NULL, /* dk_selector */
- NULL /* dk_strict */
- #endif
+ NULL, /* tls_sni */
+ US"system", /* tls_verify_certificates */
+ EXIM_CLIENT_DH_DEFAULT_MIN_BITS,
+ /* tls_dh_min_bits */
+ TRUE, /* tls_tempfail_tryclear */
+ NULL, /* tls_verify_hosts */
+ US"*", /* tls_try_verify_hosts */
+ US"*" /* tls_verify_cert_hostnames */
+#endif
+#ifndef DISABLE_DKIM
+ , {NULL, /* dkim_canon */
+ NULL, /* dkim_domain */
+ NULL, /* dkim_private_key */
+ NULL, /* dkim_selector */
+ NULL, /* dkim_sign_headers */
+ NULL, /* dkim_strict */
+ FALSE} /* dot_stuffed */
+#endif
};
+/* some DSN flags for use later */
+
+static int rf_list[] = {rf_notify_never, rf_notify_success,
+ rf_notify_failure, rf_notify_delay };
+
+static uschar *rf_names[] = { US"NEVER", US"SUCCESS", US"FAILURE", US"DELAY" };
+
+
/* Local statics */
-static uschar *smtp_command; /* Points to last cmd for error messages */
-static uschar *mail_command; /* Points to MAIL cmd for error messages */
-static BOOL update_waiting; /* TRUE to update the "wait" database */
+static uschar *smtp_command; /* Points to last cmd for error messages */
+static uschar *mail_command; /* Points to MAIL cmd for error messages */
+static uschar *data_command = US""; /* Points to DATA cmd for error messages */
+static BOOL update_waiting; /* TRUE to update the "wait" database */
+static BOOL pipelining_active; /* current transaction is in pipe mode */
/*************************************************
/* Set the default port according to the protocol */
if (ob->port == NULL)
- ob->port = (strcmpic(ob->protocol, US"lmtp") == 0)? US"lmtp" : US"smtp";
+ ob->port = (strcmpic(ob->protocol, US"lmtp") == 0)? US"lmtp" :
+ (strcmpic(ob->protocol, US"smtps") == 0)? US"smtps" : US"smtp";
/* Set up the setup entry point, to be called before subprocesses for this
transport. */
msg to put in each address's message field
rc to put in each address's transport_return field
pass_message if TRUE, set the "pass message" flag in the address
+ host if set, mark addrs as having used this host
+ smtp_greeting from peer
+ helo_response from peer
If errno_value has the special value ERRNO_CONNECTTIMEOUT, ETIMEDOUT is put in
the errno field, and RTEF_CTOUT is ORed into the more_errno field, to indicate
static void
set_errno(address_item *addrlist, int errno_value, uschar *msg, int rc,
- BOOL pass_message)
+ BOOL pass_message, host_item * host
+#ifdef EXPERIMENTAL_DSN_INFO
+ , const uschar * smtp_greeting, const uschar * helo_response
+#endif
+ )
{
address_item *addr;
int orvalue = 0;
errno_value = ETIMEDOUT;
orvalue = RTEF_CTOUT;
}
-for (addr = addrlist; addr != NULL; addr = addr->next)
- {
- if (addr->transport_return < PENDING) continue;
- addr->basic_errno = errno_value;
- addr->more_errno |= orvalue;
- if (msg != NULL)
+for (addr = addrlist; addr; addr = addr->next)
+ if (addr->transport_return >= PENDING)
{
- addr->message = msg;
- if (pass_message) setflag(addr, af_pass_message);
+ addr->basic_errno = errno_value;
+ addr->more_errno |= orvalue;
+ if (msg != NULL)
+ {
+ addr->message = msg;
+ if (pass_message) setflag(addr, af_pass_message);
+ }
+ addr->transport_return = rc;
+ if (host)
+ {
+ addr->host_used = host;
+#ifdef EXPERIMENTAL_DSN_INFO
+ if (smtp_greeting)
+ {uschar * s = Ustrchr(smtp_greeting, '\n'); if (s) *s = '\0';}
+ addr->smtp_greeting = smtp_greeting;
+
+ if (helo_response)
+ {uschar * s = Ustrchr(helo_response, '\n'); if (s) *s = '\0';}
+ addr->helo_response = helo_response;
+#endif
+ }
}
- addr->transport_return = rc;
- }
}
+static void
+set_errno_nohost(address_item *addrlist, int errno_value, uschar *msg, int rc,
+ BOOL pass_message)
+{
+set_errno(addrlist, errno_value, msg, rc, pass_message, NULL
+#ifdef EXPERIMENTAL_DSN_INFO
+ , NULL, NULL
+#endif
+ );
+}
/*************************************************
more_errno from the top address for use with ERRNO_FILTER_FAIL
buffer the SMTP response buffer
yield where to put a one-digit SMTP response code
- message where to put an errror message
+ message where to put an error message
pass_message set TRUE if message is an SMTP response
Returns: TRUE if an SMTP "QUIT" command should be sent, else FALSE
*/
-static BOOL check_response(host_item *host, int *errno_value, int more_errno,
+static BOOL
+check_response(host_item *host, int *errno_value, int more_errno,
uschar *buffer, int *yield, uschar **message, BOOL *pass_message)
{
-uschar *pl = US"";
-
-if (smtp_use_pipelining &&
- (Ustrcmp(smtp_command, "MAIL") == 0 ||
- Ustrcmp(smtp_command, "RCPT") == 0 ||
- Ustrcmp(smtp_command, "DATA") == 0))
- pl = US"pipelined ";
+uschar * pl = pipelining_active ? US"pipelined " : US"";
*yield = '4'; /* Default setting is to give a temporary error */
if (*errno_value == ETIMEDOUT)
{
- *message = US string_sprintf("SMTP timeout while connected to %s [%s] "
- "after %s%s", host->name, host->address, pl, smtp_command);
+ *message = US string_sprintf("SMTP timeout after %s%s",
+ pl, smtp_command);
if (transport_count > 0)
*message = US string_sprintf("%s (%d bytes written)", *message,
transport_count);
if (*errno_value == ERRNO_SMTPFORMAT)
{
- uschar *malfresp = string_printing(buffer);
+ const uschar *malfresp = string_printing(buffer);
while (isspace(*malfresp)) malfresp++;
- if (*malfresp == 0)
- *message = string_sprintf("Malformed SMTP reply (an empty line) from "
- "%s [%s] in response to %s%s", host->name, host->address, pl,
- smtp_command);
- else
- *message = string_sprintf("Malformed SMTP reply from %s [%s] in response "
- "to %s%s: %s", host->name, host->address, pl, smtp_command, malfresp);
+ *message = *malfresp == 0
+ ? string_sprintf("Malformed SMTP reply (an empty line) "
+ "in response to %s%s", pl, smtp_command)
+ : string_sprintf("Malformed SMTP reply in response to %s%s: %s",
+ pl, smtp_command, malfresp);
return FALSE;
}
return FALSE;
}
+#ifdef SUPPORT_I18N
+/* Handle lack of advertised SMTPUTF8, for international message */
+if (*errno_value == ERRNO_UTF8_FWD)
+ {
+ *message = US string_sprintf("utf8 support required but not offered for forwarding");
+ DEBUG(D_deliver|D_transport) debug_printf("%s\n", *message);
+ return TRUE;
+ }
+#endif
+
/* Handle error responses from the remote mailer. */
if (buffer[0] != 0)
{
- uschar *s = string_printing(buffer);
+ const uschar *s = string_printing(buffer);
*message = US string_sprintf("SMTP error from remote mail server after %s%s: "
- "host %s [%s]: %s", pl, smtp_command, host->name, host->address, s);
+ "%s", pl, smtp_command, s);
*pass_message = TRUE;
*yield = buffer[0];
return TRUE;
if (*errno_value == 0 || *errno_value == ECONNRESET)
{
*errno_value = ERRNO_SMTPCLOSED;
- *message = US string_sprintf("Remote host %s [%s] closed connection "
- "in response to %s%s", host->name, host->address, pl, smtp_command);
+ *message = US string_sprintf("Remote host closed connection "
+ "in response to %s%s", pl, smtp_command);
}
else *message = US string_sprintf("%s [%s]", host->name, host->address);
static void
write_logs(address_item *addr, host_item *host)
{
-if (addr->message != NULL)
+uschar * message = LOGGING(outgoing_port)
+ ? string_sprintf("H=%s [%s]:%d", host->name, host->address,
+ host->port == PORT_NONE ? 25 : host->port)
+ : string_sprintf("H=%s [%s]", host->name, host->address);
+
+if (addr->message)
{
- uschar *message = addr->message;
+ message = string_sprintf("%s: %s", message, addr->message);
if (addr->basic_errno > 0)
message = string_sprintf("%s: %s", message, strerror(addr->basic_errno));
log_write(0, LOG_MAIN, "%s", message);
}
else
{
- uschar *msg =
- ((log_extra_selector & LX_outgoing_port) != 0)?
- string_sprintf("%s [%s]:%d", host->name, host->address,
- (host->port == PORT_NONE)? 25 : host->port)
- :
- string_sprintf("%s [%s]", host->name, host->address);
- log_write(0, LOG_MAIN, "%s %s", msg, strerror(addr->basic_errno));
- deliver_msglog("%s %s %s\n", tod_stamp(tod_log), msg,
- strerror(addr->basic_errno));
+ const uschar * s = exim_errstr(addr->basic_errno);
+ log_write(0, LOG_MAIN, "%s %s", message, s);
+ deliver_msglog("%s %s %s\n", tod_stamp(tod_log), message, s);
}
}
+static void
+msglog_line(host_item * host, uschar * message)
+{
+deliver_msglog("%s H=%s [%s] %s\n", tod_stamp(tod_log),
+ host->name, host->address, message);
+}
+
+#ifndef DISABLE_EVENT
+/*************************************************
+* Post-defer action *
+*************************************************/
+
+/* This expands an arbitrary per-transport string.
+ It might, for example, be used to write to the database log.
+
+Arguments:
+ addr the address item containing error information
+ host the current host
+
+Returns: nothing
+*/
+
+static void
+deferred_event_raise(address_item *addr, host_item *host)
+{
+uschar * action = addr->transport->event_action;
+const uschar * save_domain;
+uschar * save_local;
+
+if (!action)
+ return;
+
+save_domain = deliver_domain;
+save_local = deliver_localpart;
+
+/*XXX would ip & port already be set up? */
+deliver_host_address = string_copy(host->address);
+deliver_host_port = host->port == PORT_NONE ? 25 : host->port;
+event_defer_errno = addr->basic_errno;
+
+router_name = addr->router->name;
+transport_name = addr->transport->name;
+deliver_domain = addr->domain;
+deliver_localpart = addr->local_part;
+
+(void) event_raise(action, US"msg:host:defer",
+ addr->message
+ ? addr->basic_errno > 0
+ ? string_sprintf("%s: %s", addr->message, strerror(addr->basic_errno))
+ : string_copy(addr->message)
+ : addr->basic_errno > 0
+ ? string_copy(US strerror(addr->basic_errno))
+ : NULL);
+
+deliver_localpart = save_local;
+deliver_domain = save_domain;
+router_name = transport_name = NULL;
+}
+#endif
+
/*************************************************
* Synchronize SMTP responses *
*************************************************/
count--;
if (!smtp_read_response(inblock, buffer, buffsize, '2', timeout))
{
+ DEBUG(D_transport) debug_printf("bad response for MAIL\n");
Ustrcpy(big_buffer, mail_command); /* Fits, because it came from there! */
if (errno == 0 && buffer[0] != 0)
{
}
errno = save_errno;
}
+
+ if (pending_DATA) count--; /* Number of RCPT responses to come */
+ while (count-- > 0) /* Mark any pending addrs with the host used */
+ {
+ while (addr->transport_return != PENDING_DEFER) addr = addr->next;
+ addr->host_used = host;
+ addr = addr->next;
+ }
return -3;
}
}
while (addr->transport_return != PENDING_DEFER) addr = addr->next;
/* The address was accepted */
+ addr->host_used = host;
if (smtp_read_response(inblock, buffer, buffsize, '2', timeout))
{
else if (errno == ETIMEDOUT)
{
- int save_errno = errno;
- uschar *message = string_sprintf("SMTP timeout while connected to %s [%s] "
- "after RCPT TO:<%s>", host->name, host->address,
- transport_rcpt_address(addr, include_affixes));
- set_errno(addrlist, save_errno, message, DEFER, FALSE);
+ uschar *message = string_sprintf("SMTP timeout after RCPT TO:<%s>",
+ transport_rcpt_address(addr, include_affixes));
+ set_errno_nohost(addrlist, ETIMEDOUT, message, DEFER, FALSE);
retry_add_item(addr, addr->address_retry_key, 0);
update_waiting = FALSE;
return -1;
{
addr->message =
string_sprintf("SMTP error from remote mail server after RCPT TO:<%s>: "
- "host %s [%s]: %s", transport_rcpt_address(addr, include_affixes),
- host->name, host->address, string_printing(buffer));
+ "%s", transport_rcpt_address(addr, include_affixes),
+ string_printing(buffer));
setflag(addr, af_pass_message);
- deliver_msglog("%s %s\n", tod_stamp(tod_log), addr->message);
+ msglog_line(host, addr->message);
/* The response was 5xx */
addr->basic_errno = ERRNO_RCPT4XX;
addr->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
- /* Log temporary errors if there are more hosts to be tried. */
+#ifndef DISABLE_EVENT
+ event_defer_errno = addr->more_errno;
+ msg_event_raise(US"msg:rcpt:host:defer", addr);
+#endif
+
+ /* Log temporary errors if there are more hosts to be tried.
+ If not, log this last one in the == line. */
+
+ if (host->next)
+ log_write(0, LOG_MAIN, "H=%s [%s]: %s", host->name, host->address, addr->message);
- if (host->next != NULL) log_write(0, LOG_MAIN, "%s", addr->message);
+#ifndef DISABLE_EVENT
+ else
+ msg_event_raise(US"msg:rcpt:defer", addr);
+#endif
/* Do not put this message on the list of those waiting for specific
hosts, as otherwise it is likely to be tried too often. */
+/* Do the client side of smtp-level authentication */
+/*
+Arguments:
+ buffer EHLO response from server (gets overwritten)
+ addrlist chain of potential addresses to deliver
+ host host to deliver to
+ ob transport options
+ ibp, obp comms channel control blocks
+
+Returns:
+ OK Success, or failed (but not required): global "smtp_authenticated" set
+ DEFER Failed authentication (and was required)
+ ERROR Internal problem
+
+ FAIL_SEND Failed communications - transmit
+ FAIL - response
+*/
+
+int
+smtp_auth(uschar *buffer, unsigned bufsize, address_item *addrlist, host_item *host,
+ smtp_transport_options_block *ob, BOOL is_esmtp,
+ smtp_inblock *ibp, smtp_outblock *obp)
+{
+int require_auth;
+uschar *fail_reason = US"server did not advertise AUTH support";
+
+smtp_authenticated = FALSE;
+client_authenticator = client_authenticated_id = client_authenticated_sender = NULL;
+require_auth = verify_check_given_host(&ob->hosts_require_auth, host);
+
+if (is_esmtp && !regex_AUTH) regex_AUTH =
+ regex_must_compile(US"\\n250[\\s\\-]AUTH\\s+([\\-\\w\\s]+)(?:\\n|$)",
+ FALSE, TRUE);
+
+if (is_esmtp && regex_match_and_setup(regex_AUTH, buffer, 0, -1))
+ {
+ uschar *names = string_copyn(expand_nstring[1], expand_nlength[1]);
+ expand_nmax = -1; /* reset */
+
+ /* Must not do this check until after we have saved the result of the
+ regex match above. */
+
+ if (require_auth == OK ||
+ verify_check_given_host(&ob->hosts_try_auth, host) == OK)
+ {
+ auth_instance *au;
+ fail_reason = US"no common mechanisms were found";
+
+ DEBUG(D_transport) debug_printf("scanning authentication mechanisms\n");
+
+ /* Scan the configured authenticators looking for one which is configured
+ for use as a client, which is not suppressed by client_condition, and
+ whose name matches an authentication mechanism supported by the server.
+ If one is found, attempt to authenticate by calling its client function.
+ */
+
+ for (au = auths; !smtp_authenticated && au != NULL; au = au->next)
+ {
+ uschar *p = names;
+ if (!au->client ||
+ (au->client_condition != NULL &&
+ !expand_check_condition(au->client_condition, au->name,
+ US"client authenticator")))
+ {
+ DEBUG(D_transport) debug_printf("skipping %s authenticator: %s\n",
+ au->name,
+ (au->client)? "client_condition is false" :
+ "not configured as a client");
+ continue;
+ }
+
+ /* Loop to scan supported server mechanisms */
+
+ while (*p != 0)
+ {
+ int rc;
+ int len = Ustrlen(au->public_name);
+ while (isspace(*p)) p++;
+
+ if (strncmpic(au->public_name, p, len) != 0 ||
+ (p[len] != 0 && !isspace(p[len])))
+ {
+ while (*p != 0 && !isspace(*p)) p++;
+ continue;
+ }
+
+ /* Found data for a listed mechanism. Call its client entry. Set
+ a flag in the outblock so that data is overwritten after sending so
+ that reflections don't show it. */
+
+ fail_reason = US"authentication attempt(s) failed";
+ obp->authenticating = TRUE;
+ rc = (au->info->clientcode)(au, ibp, obp,
+ ob->command_timeout, buffer, bufsize);
+ obp->authenticating = FALSE;
+ DEBUG(D_transport) debug_printf("%s authenticator yielded %d\n",
+ au->name, rc);
+
+ /* A temporary authentication failure must hold up delivery to
+ this host. After a permanent authentication failure, we carry on
+ to try other authentication methods. If all fail hard, try to
+ deliver the message unauthenticated unless require_auth was set. */
+
+ switch(rc)
+ {
+ case OK:
+ smtp_authenticated = TRUE; /* stops the outer loop */
+ client_authenticator = au->name;
+ if (au->set_client_id != NULL)
+ client_authenticated_id = expand_string(au->set_client_id);
+ break;
+
+ /* Failure after writing a command */
+
+ case FAIL_SEND:
+ return FAIL_SEND;
+
+ /* Failure after reading a response */
+
+ case FAIL:
+ if (errno != 0 || buffer[0] != '5') return FAIL;
+ log_write(0, LOG_MAIN, "%s authenticator failed H=%s [%s] %s",
+ au->name, host->name, host->address, buffer);
+ break;
+
+ /* Failure by some other means. In effect, the authenticator
+ decided it wasn't prepared to handle this case. Typically this
+ is the result of "fail" in an expansion string. Do we need to
+ log anything here? Feb 2006: a message is now put in the buffer
+ if logging is required. */
+
+ case CANCELLED:
+ if (*buffer != 0)
+ log_write(0, LOG_MAIN, "%s authenticator cancelled "
+ "authentication H=%s [%s] %s", au->name, host->name,
+ host->address, buffer);
+ break;
+
+ /* Internal problem, message in buffer. */
+
+ case ERROR:
+ set_errno_nohost(addrlist, ERRNO_AUTHPROB, string_copy(buffer),
+ DEFER, FALSE);
+ return ERROR;
+ }
+
+ break; /* If not authenticated, try next authenticator */
+ } /* Loop for scanning supported server mechanisms */
+ } /* Loop for further authenticators */
+ }
+ }
+
+/* If we haven't authenticated, but are required to, give up. */
+
+if (require_auth == OK && !smtp_authenticated)
+ {
+ set_errno_nohost(addrlist, ERRNO_AUTHFAIL,
+ string_sprintf("authentication required but %s", fail_reason), DEFER,
+ FALSE);
+ return DEFER;
+ }
+
+return OK;
+}
+
+
+/* Construct AUTH appendix string for MAIL TO */
+/*
+Arguments
+ buffer to build string
+ addrlist chain of potential addresses to deliver
+ ob transport options
+
+Globals smtp_authenticated
+ client_authenticated_sender
+Return True on error, otherwise buffer has (possibly empty) terminated string
+*/
+
+BOOL
+smtp_mail_auth_str(uschar *buffer, unsigned bufsize, address_item *addrlist,
+ smtp_transport_options_block *ob)
+{
+uschar *local_authenticated_sender = authenticated_sender;
+
+#ifdef notdef
+ debug_printf("smtp_mail_auth_str: as<%s> os<%s> SA<%s>\n", authenticated_sender, ob->authenticated_sender, smtp_authenticated?"Y":"N");
+#endif
+
+if (ob->authenticated_sender != NULL)
+ {
+ uschar *new = expand_string(ob->authenticated_sender);
+ if (new == NULL)
+ {
+ if (!expand_string_forcedfail)
+ {
+ uschar *message = string_sprintf("failed to expand "
+ "authenticated_sender: %s", expand_string_message);
+ set_errno_nohost(addrlist, ERRNO_EXPANDFAIL, message, DEFER, FALSE);
+ return TRUE;
+ }
+ }
+ else if (new[0] != 0) local_authenticated_sender = new;
+ }
+
+/* Add the authenticated sender address if present */
+
+if ((smtp_authenticated || ob->authenticated_sender_force) &&
+ local_authenticated_sender != NULL)
+ {
+ string_format(buffer, bufsize, " AUTH=%s",
+ auth_xtextencode(local_authenticated_sender,
+ Ustrlen(local_authenticated_sender)));
+ client_authenticated_sender = string_copy(local_authenticated_sender);
+ }
+else
+ *buffer= 0;
+
+return FALSE;
+}
+
+
+
+#ifdef EXPERIMENTAL_DANE
+/* Lookup TLSA record for host/port.
+Return: OK success with dnssec; DANE mode
+ DEFER Do not use this host now, may retry later
+ FAIL_FORCED No TLSA record; DANE not usable
+ FAIL Do not use this connection
+*/
+
+int
+tlsa_lookup(const host_item * host, dns_answer * dnsa, BOOL dane_required)
+{
+/* move this out to host.c given the similarity to dns_lookup() ? */
+uschar buffer[300];
+const uschar * fullname = buffer;
+
+/* TLSA lookup string */
+(void)sprintf(CS buffer, "_%d._tcp.%.256s", host->port, host->name);
+
+switch (dns_lookup(dnsa, buffer, T_TLSA, &fullname))
+ {
+ case DNS_SUCCEED:
+ if (!dns_is_secure(dnsa))
+ {
+ log_write(0, LOG_MAIN, "DANE error: TLSA lookup not DNSSEC");
+ return DEFER;
+ }
+ return OK;
+
+ case DNS_AGAIN:
+ return DEFER; /* just defer this TLS'd conn */
+
+ case DNS_NODATA: /* no TLSA RR for this lookup */
+ case DNS_NOMATCH: /* no records at all for this lookup */
+ return dane_required ? FAIL : FAIL_FORCED;
+
+ default:
+ case DNS_FAIL:
+ return dane_required ? FAIL : DEFER;
+ }
+}
+#endif
+
+
+
+typedef struct smtp_compare_s
+{
+ uschar *current_sender_address;
+ struct transport_instance *tblock;
+} smtp_compare_t;
+
+/*
+Create a unique string that identifies this message, it is based on
+sender_address, helo_data and tls_certificate if enabled. */
+
+static uschar *
+smtp_local_identity(uschar * sender, struct transport_instance * tblock)
+{
+address_item * addr1;
+uschar * if1 = US"";
+uschar * helo1 = US"";
+#ifdef SUPPORT_TLS
+uschar * tlsc1 = US"";
+#endif
+uschar * save_sender_address = sender_address;
+uschar * local_identity = NULL;
+smtp_transport_options_block * ob =
+ (smtp_transport_options_block *)tblock->options_block;
+
+sender_address = sender;
+
+addr1 = deliver_make_addr (sender, TRUE);
+deliver_set_expansions(addr1);
+
+if (ob->interface)
+ if1 = expand_string(ob->interface);
+
+if (ob->helo_data)
+ helo1 = expand_string(ob->helo_data);
+
+#ifdef SUPPORT_TLS
+if (ob->tls_certificate)
+ tlsc1 = expand_string(ob->tls_certificate);
+local_identity = string_sprintf ("%s^%s^%s", if1, helo1, tlsc1);
+#else
+local_identity = string_sprintf ("%s^%s", if1, helo1);
+#endif
+
+deliver_set_expansions(NULL);
+sender_address = save_sender_address;
+
+return local_identity;
+}
+
+
+
+/* This routine is a callback that is called from transport_check_waiting.
+This function will evaluate the incoming message versus the previous
+message. If the incoming message is using a different local identity then
+we will veto this new message. */
+
+static BOOL
+smtp_are_same_identities(uschar * message_id, smtp_compare_t * s_compare)
+{
+uschar * message_local_identity,
+ * current_local_identity,
+ * new_sender_address;
+
+current_local_identity =
+ smtp_local_identity(s_compare->current_sender_address, s_compare->tblock);
+
+if (!(new_sender_address = deliver_get_sender_address(message_id)))
+ return 0;
+
+message_local_identity =
+ smtp_local_identity(new_sender_address, s_compare->tblock);
+
+return Ustrcmp(current_local_identity, message_local_identity) == 0;
+}
+
+
+
+uschar
+ehlo_response(uschar * buf, size_t bsize, uschar checks)
+{
+#ifdef SUPPORT_TLS
+if ( checks & PEER_OFFERED_TLS
+ && pcre_exec(regex_STARTTLS, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_TLS;
+#endif
+
+if ( checks & PEER_OFFERED_IGNQ
+ && pcre_exec(regex_IGNOREQUOTA, NULL, CS buf, bsize, 0,
+ PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_IGNQ;
+
+if ( checks & PEER_OFFERED_CHUNKING
+ && pcre_exec(regex_CHUNKING, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_CHUNKING;
+
+#ifndef DISABLE_PRDR
+if ( checks & PEER_OFFERED_PRDR
+ && pcre_exec(regex_PRDR, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_PRDR;
+#endif
+
+#ifdef SUPPORT_I18N
+if ( checks & PEER_OFFERED_UTF8
+ && pcre_exec(regex_UTF8, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_UTF8;
+#endif
+
+if ( checks & PEER_OFFERED_DSN
+ && pcre_exec(regex_DSN, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_DSN;
+
+if ( checks & PEER_OFFERED_PIPE
+ && pcre_exec(regex_PIPELINING, NULL, CS buf, bsize, 0,
+ PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_PIPE;
+
+if ( checks & PEER_OFFERED_SIZE
+ && pcre_exec(regex_SIZE, NULL, CS buf, bsize, 0, PCRE_EOPT, NULL, 0) < 0)
+ checks &= ~PEER_OFFERED_SIZE;
+
+return checks;
+}
+
+
+
+/* Callback for emitting a BDAT data chunk header.
+
+If given a nonzero size, first flush any buffered SMTP commands
+then emit the command.
+
+Reap previous SMTP command responses if requested.
+Reap one SMTP command response if requested.
+
+Returns: OK or ERROR
+*/
+
+static int
+smtp_chunk_cmd_callback(int fd, transport_ctx * tctx,
+ unsigned chunk_size, unsigned flags)
+{
+smtp_transport_options_block * ob =
+ (smtp_transport_options_block *)(tctx->tblock->options_block);
+int cmd_count = 0;
+int prev_cmd_count;
+uschar * buffer = tctx->buffer;
+
+
+/* Write SMTP chunk header command */
+
+if (chunk_size > 0)
+ {
+ if((cmd_count = smtp_write_command(tctx->outblock, FALSE, "BDAT %u%s\r\n",
+ chunk_size,
+ flags & tc_chunk_last ? " LAST" : "")
+ ) < 0) return ERROR;
+ if (flags & tc_chunk_last)
+ data_command = string_copy(big_buffer); /* Save for later error message */
+ }
+
+prev_cmd_count = cmd_count += tctx->cmd_count;
+
+/* Reap responses for any previous, but not one we just emitted */
+
+if (chunk_size > 0)
+ prev_cmd_count--;
+if (tctx->pending_BDAT)
+ prev_cmd_count--;
+
+if (flags & tc_reap_prev && prev_cmd_count > 0)
+ {
+ DEBUG(D_transport) debug_printf("look for %d responses"
+ " for previous pipelined cmds\n", prev_cmd_count);
+
+ switch(sync_responses(tctx->first_addr, tctx->tblock->rcpt_include_affixes,
+ tctx->sync_addr, tctx->host, prev_cmd_count,
+ ob->address_retry_include_sender,
+ tctx->pending_MAIL, 0,
+ tctx->inblock,
+ ob->command_timeout,
+ buffer, DELIVER_BUFFER_SIZE))
+ {
+ case 1: /* 2xx (only) => OK */
+ case 3: tctx->good_RCPT = TRUE; /* 2xx & 5xx => OK & progress made */
+ case 2: *tctx->completed_address = TRUE; /* 5xx (only) => progress made */
+ case 0: break; /* No 2xx or 5xx, but no probs */
+
+ case -1: /* Timeout on RCPT */
+ default: return ERROR; /* I/O error, or any MAIL/DATA error */
+ }
+ cmd_count = 1;
+ if (!tctx->pending_BDAT)
+ pipelining_active = FALSE;
+ }
+
+/* Reap response for an outstanding BDAT */
+
+if (tctx->pending_BDAT)
+ {
+ DEBUG(D_transport) debug_printf("look for one response for BDAT\n");
+
+ if (!smtp_read_response(tctx->inblock, buffer, DELIVER_BUFFER_SIZE, '2',
+ ob->command_timeout))
+ {
+ if (errno == 0 && buffer[0] == '4')
+ {
+ errno = ERRNO_DATA4XX; /*XXX does this actually get used? */
+ tctx->first_addr->more_errno |=
+ ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
+ }
+ return ERROR;
+ }
+ cmd_count--;
+ tctx->pending_BDAT = FALSE;
+ pipelining_active = FALSE;
+ }
+else if (chunk_size > 0)
+ tctx->pending_BDAT = TRUE;
+
+
+tctx->cmd_count = cmd_count;
+return OK;
+}
+
+
+
/*************************************************
* Deliver address list to given host *
*************************************************/
/* If continue_hostname is not null, we get here only when continuing to
deliver down an existing channel. The channel was passed as the standard
-input.
+input. TLS is never active on a passed channel; the previous process always
+closes it down before passing the connection on.
Otherwise, we have to make a connection to the remote host, and do the
initial protocol exchange.
port default TCP/IP port to use, in host byte order
interface interface to bind to, or NULL
tblock transport instance block
- copy_host TRUE if host set in addr->host_used must be copied, because
- it is specific to this call of the transport
message_defer set TRUE if yield is OK, but all addresses were deferred
because of a non-recipient, non-host failure, that is, a
4xx response to MAIL FROM, DATA, or ".". This is a defer
static int
smtp_deliver(address_item *addrlist, host_item *host, int host_af, int port,
- uschar *interface, transport_instance *tblock, BOOL copy_host,
+ uschar *interface, transport_instance *tblock,
BOOL *message_defer, BOOL suppress_tls)
{
address_item *addr;
time_t start_delivery_time = time(NULL);
smtp_transport_options_block *ob =
(smtp_transport_options_block *)(tblock->options_block);
-BOOL lmtp = strcmpic(ob->protocol, US"lmtp") == 0;
-BOOL ok = FALSE;
-BOOL send_rset = TRUE;
-BOOL send_quit = TRUE;
-BOOL setting_up = TRUE;
-BOOL completed_address = FALSE;
-BOOL esmtp = TRUE;
-BOOL pending_MAIL;
+struct lflags {
+ BOOL lmtp:1;
+ BOOL smtps:1;
+ BOOL ok:1;
+ BOOL send_rset:1;
+ BOOL send_quit:1;
+ BOOL setting_up:1;
+ BOOL esmtp:1;
+ BOOL esmtp_sent:1;
+ BOOL pending_MAIL:1;
+#ifndef DISABLE_PRDR
+ BOOL prdr_active:1;
+#endif
+#ifdef SUPPORT_I18N
+ BOOL utf8_needed:1;
+#endif
+ BOOL dsn_all_lasthop:1;
+#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
+ BOOL dane:1;
+ BOOL dane_required:1;
+#endif
+} lflags;
+
BOOL pass_message = FALSE;
+BOOL completed_address = FALSE;
+uschar peer_offered = 0;
+#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
+dns_answer tlsa_dnsa;
+#endif
smtp_inblock inblock;
smtp_outblock outblock;
int max_rcpt = tblock->max_addresses;
uschar *igquotstr = US"";
-uschar *local_authenticated_sender = authenticated_sender;
+
+#ifdef EXPERIMENTAL_DSN_INFO
+uschar *smtp_greeting = NULL;
+uschar *helo_response = NULL;
+#endif
uschar *helo_data = NULL;
+
uschar *message = NULL;
uschar new_message_id[MESSAGE_ID_LENGTH + 1];
uschar *p;
-uschar buffer[4096];
+uschar buffer[DELIVER_BUFFER_SIZE];
uschar inbuffer[4096];
-uschar outbuffer[1024];
+uschar outbuffer[4096];
suppress_tls = suppress_tls; /* stop compiler warning when no TLS support */
+lflags.lmtp = strcmpic(ob->protocol, US"lmtp") == 0;
+lflags.smtps = strcmpic(ob->protocol, US"smtps") == 0;
+lflags.ok = FALSE;
+lflags.send_rset = TRUE;
+lflags.send_quit = TRUE;
+lflags.setting_up = TRUE;
+lflags.esmtp = TRUE;
+lflags.esmtp_sent = FALSE;
+#ifdef SUPPORT_I18N
+lflags.utf8_needed = FALSE;
+#endif
+lflags.dsn_all_lasthop = TRUE;
+#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
+lflags.dane = FALSE;
+lflags.dane_required = verify_check_given_host(&ob->hosts_require_dane, host) == OK;
+#endif
+
*message_defer = FALSE;
smtp_command = US"initial connection";
+buffer[0] = '\0';
if (max_rcpt == 0) max_rcpt = 999999;
/* Set up the buffer for reading SMTP response packets. */
outblock.cmd_count = 0;
outblock.authenticating = FALSE;
-/* If an authenticated_sender override has been specified for this transport
-instance, expand it. If the expansion is forced to fail, and there was already
-an authenticated_sender for this message, the original value will be used.
-Other expansion failures are serious. An empty result is ignored, but there is
-otherwise no check - this feature is expected to be used with LMTP and other
-cases where non-standard addresses (e.g. without domains) might be required. */
+/* Reset the parameters of a TLS session. */
-if (ob->authenticated_sender != NULL)
+tls_out.bits = 0;
+tls_out.cipher = NULL; /* the one we may use for this transport */
+tls_out.ourcert = NULL;
+tls_out.peercert = NULL;
+tls_out.peerdn = NULL;
+#if defined(SUPPORT_TLS) && !defined(USE_GNUTLS)
+tls_out.sni = NULL;
+#endif
+tls_out.ocsp = OCSP_NOT_REQ;
+
+/* Flip the legacy TLS-related variables over to the outbound set in case
+they're used in the context of the transport. Don't bother resetting
+afterward as we're in a subprocess. */
+
+tls_modify_variables(&tls_out);
+
+#ifndef SUPPORT_TLS
+if (lflags.smtps)
{
- uschar *new = expand_string(ob->authenticated_sender);
- if (new == NULL)
- {
- if (!expand_string_forcedfail)
- {
- uschar *message = string_sprintf("failed to expand "
- "authenticated_sender: %s", expand_string_message);
- set_errno(addrlist, 0, message, DEFER, FALSE);
- return ERROR;
- }
- }
- else if (new[0] != 0) local_authenticated_sender = new;
+ set_errno_nohost(addrlist, ERRNO_TLSFAILURE, US"TLS support not available",
+ DEFER, FALSE);
+ return ERROR;
}
+#endif
/* Make a connection to the host if this isn't a continued delivery, and handle
the initial interaction and HELO/EHLO/LHLO. Connect timeout errors are handled
if (continue_hostname == NULL)
{
+ /* This puts port into host->port */
inblock.sock = outblock.sock =
- smtp_connect(host, host_af, port, interface, ob->connect_timeout,
- ob->keepalive);
+ smtp_connect(host, host_af, port, interface, ob->connect_timeout, tblock);
+
if (inblock.sock < 0)
{
- set_errno(addrlist, (errno == ETIMEDOUT)? ERRNO_CONNECTTIMEOUT : errno,
+ set_errno_nohost(addrlist, errno == ETIMEDOUT ? ERRNO_CONNECTTIMEOUT : errno,
NULL, DEFER, FALSE);
return DEFER;
}
+#if defined(SUPPORT_TLS) && defined(EXPERIMENTAL_DANE)
+ {
+ tls_out.dane_verified = FALSE;
+ tls_out.tlsa_usage = 0;
+
+ if (host->dnssec == DS_YES)
+ {
+ if( lflags.dane_required
+ || verify_check_given_host(&ob->hosts_try_dane, host) == OK
+ )
+ switch (rc = tlsa_lookup(host, &tlsa_dnsa, lflags.dane_required))
+ {
+ case OK: lflags.dane = TRUE; break;
+ case FAIL_FORCED: break;
+ default: set_errno_nohost(addrlist, ERRNO_DNSDEFER,
+ string_sprintf("DANE error: tlsa lookup %s",
+ rc == DEFER ? "DEFER" : "FAIL"),
+ rc, FALSE);
+ return rc;
+ }
+ }
+ else if (lflags.dane_required)
+ {
+ set_errno_nohost(addrlist, ERRNO_DNSDEFER,
+ string_sprintf("DANE error: %s lookup not DNSSEC", host->name),
+ FAIL, FALSE);
+ return FAIL;
+ }
+
+ if (lflags.dane)
+ ob->tls_tempfail_tryclear = FALSE;
+ }
+#endif /*DANE*/
+
/* Expand the greeting message while waiting for the initial response. (Makes
sense if helo_data contains ${lookup dnsdb ...} stuff). The expansion is
delayed till here so that $sending_interface and $sending_port are set. */
helo_data = expand_string(ob->helo_data);
+#ifdef SUPPORT_I18N
+ if (helo_data)
+ {
+ uschar * errstr = NULL;
+ if ((helo_data = string_domain_utf8_to_alabel(helo_data, &errstr)), errstr)
+ {
+ errstr = string_sprintf("failed to expand helo_data: %s", errstr);
+ set_errno_nohost(addrlist, ERRNO_EXPANDFAIL, errstr, DEFER, FALSE);
+ yield = DEFER;
+ goto SEND_QUIT;
+ }
+ }
+#endif
/* The first thing is to wait for an initial OK response. The dreaded "goto"
is nevertheless a reasonably clean way of programming this kind of logic,
where you want to escape on any error. */
- if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
- ob->command_timeout)) goto RESPONSE_FAILED;
+ if (!lflags.smtps)
+ {
+ BOOL good_response;
- /* Now check if the helo_data expansion went well, and sign off cleanly if it
- didn't. */
+#ifdef TCP_QUICKACK
+ (void) setsockopt(inblock.sock, IPPROTO_TCP, TCP_QUICKACK, US &off, sizeof(off));
+#endif
+ good_response = smtp_read_response(&inblock, buffer, sizeof(buffer),
+ '2', ob->command_timeout);
+#ifdef EXPERIMENTAL_DSN_INFO
+ smtp_greeting = string_copy(buffer);
+#endif
+ if (!good_response) goto RESPONSE_FAILED;
- if (helo_data == NULL)
- {
- uschar *message = string_sprintf("failed to expand helo_data: %s",
- expand_string_message);
- set_errno(addrlist, 0, message, DEFER, FALSE);
- yield = DEFER;
- goto SEND_QUIT;
+#ifndef DISABLE_EVENT
+ {
+ uschar * s;
+ lookup_dnssec_authenticated = host->dnssec==DS_YES ? US"yes"
+ : host->dnssec==DS_NO ? US"no" : NULL;
+ s = event_raise(tblock->event_action, US"smtp:connect", buffer);
+ if (s)
+ {
+ set_errno_nohost(addrlist, ERRNO_EXPANDFAIL,
+ string_sprintf("deferred by smtp:connect event expansion: %s", s),
+ DEFER, FALSE);
+ yield = DEFER;
+ goto SEND_QUIT;
+ }
+ }
+#endif
+
+ /* Now check if the helo_data expansion went well, and sign off cleanly if
+ it didn't. */
+
+ if (!helo_data)
+ {
+ uschar *message = string_sprintf("failed to expand helo_data: %s",
+ expand_string_message);
+ set_errno_nohost(addrlist, ERRNO_EXPANDFAIL, message, DEFER, FALSE);
+ yield = DEFER;
+ goto SEND_QUIT;
+ }
}
/** Debugging without sending a message
mailers use upper case for some reason (the RFC is quite clear about case
independence) so, for peace of mind, I gave in. */
- esmtp = verify_check_this_host(&(ob->hosts_avoid_esmtp), NULL,
- host->name, host->address, NULL) != OK;
+ lflags.esmtp = verify_check_given_host(&ob->hosts_avoid_esmtp, host) != OK;
+
+ /* Alas; be careful, since this goto is not an error-out, so conceivably
+ we might set data between here and the target which we assume to exist
+ and be usable. I can see this coming back to bite us. */
+#ifdef SUPPORT_TLS
+ if (lflags.smtps)
+ {
+ smtp_peer_options |= PEER_OFFERED_TLS;
+ suppress_tls = FALSE;
+ ob->tls_tempfail_tryclear = FALSE;
+ smtp_command = US"SSL-on-connect";
+ goto TLS_NEGOTIATE;
+ }
+#endif
- if (esmtp)
+ if (lflags.esmtp)
{
if (smtp_write_command(&outblock, FALSE, "%s %s\r\n",
- lmtp? "LHLO" : "EHLO", helo_data) < 0)
+ lflags.lmtp ? "LHLO" : "EHLO", helo_data) < 0)
goto SEND_FAILED;
+ lflags.esmtp_sent = TRUE;
if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
ob->command_timeout))
{
- if (errno != 0 || buffer[0] == 0 || lmtp) goto RESPONSE_FAILED;
- esmtp = FALSE;
+ if (errno != 0 || buffer[0] == 0 || lflags.lmtp)
+ {
+#ifdef EXPERIMENTAL_DSN_INFO
+ helo_response = string_copy(buffer);
+#endif
+ goto RESPONSE_FAILED;
+ }
+ lflags.esmtp = FALSE;
}
+#ifdef EXPERIMENTAL_DSN_INFO
+ helo_response = string_copy(buffer);
+#endif
}
else
- {
DEBUG(D_transport)
debug_printf("not sending EHLO (host matches hosts_avoid_esmtp)\n");
- }
- if (!esmtp)
+ if (!lflags.esmtp)
{
+ BOOL good_response;
+ int n = sizeof(buffer);
+ uschar * rsp = buffer;
+
+ if (lflags.esmtp_sent && (n = Ustrlen(buffer)) < sizeof(buffer)/2)
+ { rsp = buffer + n + 1; n = sizeof(buffer) - n; }
+
if (smtp_write_command(&outblock, FALSE, "HELO %s\r\n", helo_data) < 0)
goto SEND_FAILED;
- if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
- ob->command_timeout)) goto RESPONSE_FAILED;
+ good_response = smtp_read_response(&inblock, rsp, n,
+ '2', ob->command_timeout);
+#ifdef EXPERIMENTAL_DSN_INFO
+ helo_response = string_copy(rsp);
+#endif
+ if (!good_response)
+ {
+ /* Handle special logging for a closed connection after HELO
+ when had previously sent EHLO */
+
+ if (rsp != buffer && rsp[0] == 0 && (errno == 0 || errno == ECONNRESET))
+ {
+ message = NULL;
+ lflags.send_quit = FALSE;
+ save_errno = ERRNO_SMTPCLOSED;
+ message = string_sprintf("Remote host closed connection "
+ "in response to %s (EHLO response was: %s)",
+ smtp_command, buffer);
+ goto FAILED;
+ }
+ Ustrncpy(buffer, rsp, sizeof(buffer)/2);
+ goto RESPONSE_FAILED;
+ }
}
- /* Set IGNOREQUOTA if the response to LHLO specifies support and the
- lmtp_ignore_quota option was set. */
+ peer_offered = smtp_peer_options = 0;
- igquotstr = (lmtp && ob->lmtp_ignore_quota &&
- pcre_exec(regex_IGNOREQUOTA, NULL, CS buffer, Ustrlen(CS buffer), 0,
- PCRE_EOPT, NULL, 0) >= 0)? US" IGNOREQUOTA" : US"";
+ if (lflags.esmtp || lflags.lmtp)
+ {
+ peer_offered = ehlo_response(buffer, Ustrlen(buffer),
+ PEER_OFFERED_TLS /* others checked later */
+ );
/* Set tls_offered if the response to EHLO specifies support for STARTTLS. */
- #ifdef SUPPORT_TLS
- tls_offered = esmtp &&
- pcre_exec(regex_STARTTLS, NULL, CS buffer, Ustrlen(buffer), 0,
- PCRE_EOPT, NULL, 0) >= 0;
- #endif
+#ifdef SUPPORT_TLS
+ smtp_peer_options |= peer_offered & PEER_OFFERED_TLS;
+#endif
+ }
}
/* For continuing deliveries down the same channel, the socket is the standard
input, and we don't need to redo EHLO here (but may need to do so for TLS - see
below). Set up the pointer to where subsequent commands will be left, for
-error messages. Note that smtp_use_size and smtp_use_pipelining will have been
+error messages. Note that smtp_peer_options will have been
set from the command line if they were set in the process that passed the
connection on. */
+/*XXX continue case needs to propagate DSN_INFO, prob. in deliver.c
+as the continue goes via transport_pass_socket() and doublefork and exec.
+It does not wait. Unclear how we keep separate host's responses
+separate - we could match up by host ip+port as a bodge. */
+
else
{
inblock.sock = outblock.sock = fileno(stdin);
smtp_command = big_buffer;
+ host->port = port; /* Record the port that was used */
}
/* If TLS is available on this connection, whether continued or not, attempt to
for error analysis. */
#ifdef SUPPORT_TLS
-if (tls_offered && !suppress_tls &&
- verify_check_this_host(&(ob->hosts_avoid_tls), NULL, host->name,
- host->address, NULL) != OK)
+if ( smtp_peer_options & PEER_OFFERED_TLS
+ && !suppress_tls
+ && verify_check_given_host(&ob->hosts_avoid_tls, host) != OK)
{
uschar buffer2[4096];
if (smtp_write_command(&outblock, FALSE, "STARTTLS\r\n") < 0)
if (!smtp_read_response(&inblock, buffer2, sizeof(buffer2), '2',
ob->command_timeout))
{
- Ustrncpy(buffer, buffer2, sizeof(buffer));
- if (errno != 0 || buffer2[0] == 0 ||
- (buffer2[0] == '4' && !ob->tls_tempfail_tryclear))
+ if ( errno != 0
+ || buffer2[0] == 0
+ || (buffer2[0] == '4' && !ob->tls_tempfail_tryclear)
+ )
+ {
+ Ustrncpy(buffer, buffer2, sizeof(buffer));
goto RESPONSE_FAILED;
+ }
}
/* STARTTLS accepted: try to negotiate a TLS session. */
else
+ TLS_NEGOTIATE:
{
- int rc = tls_client_start(inblock.sock,
- host,
- addrlist,
- NULL, /* No DH param */
- ob->tls_certificate,
- ob->tls_privatekey,
- ob->tls_verify_certificates,
- ob->tls_crl,
- ob->tls_require_ciphers,
- ob->gnutls_require_mac,
- ob->gnutls_require_kx,
- ob->gnutls_require_proto,
- ob->command_timeout);
+ int rc = tls_client_start(inblock.sock, host, addrlist, tblock
+# ifdef EXPERIMENTAL_DANE
+ , lflags.dane ? &tlsa_dnsa : NULL
+# endif
+ );
/* TLS negotiation failed; give an error. From outside, this function may
be called again to try in clear on a new connection, if the options permit
if (rc != OK)
{
+# ifdef EXPERIMENTAL_DANE
+ if (lflags.dane) log_write(0, LOG_MAIN,
+ "DANE attempt failed; no TLS connection to %s [%s]",
+ host->name, host->address);
+# endif
+
save_errno = ERRNO_TLSFAILURE;
message = US"failure while setting up TLS session";
- send_quit = FALSE;
+ lflags.send_quit = FALSE;
goto TLS_FAILED;
}
/* TLS session is set up */
- for (addr = addrlist; addr != NULL; addr = addr->next)
- {
+ smtp_peer_options_wrap = smtp_peer_options;
+ for (addr = addrlist; addr; addr = addr->next)
if (addr->transport_return == PENDING_DEFER)
{
- addr->cipher = tls_cipher;
- addr->peerdn = tls_peerdn;
+ addr->cipher = tls_out.cipher;
+ addr->ourcert = tls_out.ourcert;
+ addr->peercert = tls_out.peercert;
+ addr->peerdn = tls_out.peerdn;
+ addr->ocsp = tls_out.ocsp;
}
- }
}
}
+/* if smtps, we'll have smtp_command set to something else; always safe to
+reset it here. */
+smtp_command = big_buffer;
+
/* If we started TLS, redo the EHLO/LHLO exchange over the secure channel. If
helo_data is null, we are dealing with a connection that was passed from
another process, and so we won't have expanded helo_data above. We have to
expand it here. $sending_ip_address and $sending_port are set up right at the
start of the Exim process (in exim.c). */
-if (tls_active >= 0)
+if (tls_out.active >= 0)
{
+ char *greeting_cmd;
+ BOOL good_response;
+
if (helo_data == NULL)
{
helo_data = expand_string(ob->helo_data);
{
uschar *message = string_sprintf("failed to expand helo_data: %s",
expand_string_message);
- set_errno(addrlist, 0, message, DEFER, FALSE);
+ set_errno_nohost(addrlist, ERRNO_EXPANDFAIL, message, DEFER, FALSE);
yield = DEFER;
goto SEND_QUIT;
}
}
- if (smtp_write_command(&outblock, FALSE, "%s %s\r\n", lmtp? "LHLO" : "EHLO",
- helo_data) < 0)
+ /* For SMTPS we need to wait for the initial OK response. */
+ if (lflags.smtps)
+ {
+ good_response = smtp_read_response(&inblock, buffer, sizeof(buffer),
+ '2', ob->command_timeout);
+#ifdef EXPERIMENTAL_DSN_INFO
+ smtp_greeting = string_copy(buffer);
+#endif
+ if (!good_response) goto RESPONSE_FAILED;
+ }
+
+ if (lflags.esmtp)
+ greeting_cmd = "EHLO";
+ else
+ {
+ greeting_cmd = "HELO";
+ DEBUG(D_transport)
+ debug_printf("not sending EHLO (host matches hosts_avoid_esmtp)\n");
+ }
+
+ if (smtp_write_command(&outblock, FALSE, "%s %s\r\n",
+ lflags.lmtp ? "LHLO" : greeting_cmd, helo_data) < 0)
goto SEND_FAILED;
- if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
- ob->command_timeout))
- goto RESPONSE_FAILED;
+ good_response = smtp_read_response(&inblock, buffer, sizeof(buffer),
+ '2', ob->command_timeout);
+#ifdef EXPERIMENTAL_DSN_INFO
+ helo_response = string_copy(buffer);
+#endif
+ if (!good_response) goto RESPONSE_FAILED;
+ smtp_peer_options = 0;
}
/* If the host is required to use a secure channel, ensure that we
have one. */
-else if (verify_check_this_host(&(ob->hosts_require_tls), NULL, host->name,
- host->address, NULL) == OK)
+else if ( lflags.smtps
+# ifdef EXPERIMENTAL_DANE
+ || lflags.dane
+# endif
+ || verify_check_given_host(&ob->hosts_require_tls, host) == OK
+ )
{
save_errno = ERRNO_TLSREQUIRED;
- message = string_sprintf("a TLS session is required for %s [%s], but %s",
- host->name, host->address,
- tls_offered? "an attempt to start TLS failed" :
- "the server did not offer TLS support");
+ message = string_sprintf("a TLS session is required, but %s",
+ smtp_peer_options & PEER_OFFERED_TLS
+ ? "an attempt to start TLS failed" : "the server did not offer TLS support");
goto TLS_FAILED;
}
-#endif
+#endif /*SUPPORT_TLS*/
/* If TLS is active, we have just started it up and re-done the EHLO command,
so its response needs to be analyzed. If TLS is not active and this is a
continued session down a previously-used socket, we haven't just done EHLO, so
-we skip this. */
-
-if (continue_hostname == NULL
- #ifdef SUPPORT_TLS
- || tls_active >= 0
- #endif
- )
- {
- int require_auth;
- uschar *fail_reason = US"server did not advertise AUTH support";
-
- /* Set for IGNOREQUOTA if the response to LHLO specifies support and the
- lmtp_ignore_quota option was set. */
-
- igquotstr = (lmtp && ob->lmtp_ignore_quota &&
- pcre_exec(regex_IGNOREQUOTA, NULL, CS buffer, Ustrlen(CS buffer), 0,
- PCRE_EOPT, NULL, 0) >= 0)? US" IGNOREQUOTA" : US"";
-
- /* If the response to EHLO specified support for the SIZE parameter, note
- this, provided size_addition is non-negative. */
-
- smtp_use_size = esmtp && ob->size_addition >= 0 &&
- pcre_exec(regex_SIZE, NULL, CS buffer, Ustrlen(CS buffer), 0,
- PCRE_EOPT, NULL, 0) >= 0;
-
- /* Note whether the server supports PIPELINING. If hosts_avoid_esmtp matched
- the current host, esmtp will be false, so PIPELINING can never be used. */
-
- smtp_use_pipelining = esmtp &&
- pcre_exec(regex_PIPELINING, NULL, CS buffer, Ustrlen(CS buffer), 0,
- PCRE_EOPT, NULL, 0) >= 0;
-
- DEBUG(D_transport) debug_printf("%susing PIPELINING\n",
- smtp_use_pipelining? "" : "not ");
-
- /* Note if the response to EHLO specifies support for the AUTH extension.
- If it has, check that this host is one we want to authenticate to, and do
- the business. The host name and address must be available when the
- authenticator's client driver is running. */
-
- smtp_authenticated = FALSE;
- require_auth = verify_check_this_host(&(ob->hosts_require_auth), NULL,
- host->name, host->address, NULL);
+we skip this. */
- if (esmtp && regex_match_and_setup(regex_AUTH, buffer, 0, -1))
+if (continue_hostname == NULL
+#ifdef SUPPORT_TLS
+ || tls_out.active >= 0
+#endif
+ )
+ {
+ if (lflags.esmtp || lflags.lmtp)
{
- uschar *names = string_copyn(expand_nstring[1], expand_nlength[1]);
- expand_nmax = -1; /* reset */
-
- /* Must not do this check until after we have saved the result of the
- regex match above. */
+ peer_offered = ehlo_response(buffer, Ustrlen(buffer),
+ 0 /* no TLS */
+ | (lflags.lmtp && ob->lmtp_ignore_quota ? PEER_OFFERED_IGNQ : 0)
+ | PEER_OFFERED_CHUNKING
+ | PEER_OFFERED_PRDR
+#ifdef SUPPORT_I18N
+ | (addrlist->prop.utf8_msg ? PEER_OFFERED_UTF8 : 0)
+ /*XXX if we hand peercaps on to continued-conn processes,
+ must not depend on this addr */
+#endif
+ | PEER_OFFERED_DSN
+ | PEER_OFFERED_PIPE
+ | (ob->size_addition >= 0 ? PEER_OFFERED_SIZE : 0)
+ );
- if (require_auth == OK ||
- verify_check_this_host(&(ob->hosts_try_auth), NULL, host->name,
- host->address, NULL) == OK)
- {
- auth_instance *au;
- fail_reason = US"no common mechanisms were found";
+ /* Set for IGNOREQUOTA if the response to LHLO specifies support and the
+ lmtp_ignore_quota option was set. */
- DEBUG(D_transport) debug_printf("scanning authentication mechanisms\n");
+ igquotstr = peer_offered & PEER_OFFERED_IGNQ ? US" IGNOREQUOTA" : US"";
- /* Scan the configured authenticators looking for one which is configured
- for use as a client and whose name matches an authentication mechanism
- supported by the server. If one is found, attempt to authenticate by
- calling its client function. */
+ /* If the response to EHLO specified support for the SIZE parameter, note
+ this, provided size_addition is non-negative. */
- for (au = auths; !smtp_authenticated && au != NULL; au = au->next)
- {
- uschar *p = names;
- if (!au->client) continue;
+ smtp_peer_options |= peer_offered & PEER_OFFERED_SIZE;
- /* Loop to scan supported server mechanisms */
+ /* Note whether the server supports PIPELINING. If hosts_avoid_esmtp matched
+ the current host, esmtp will be false, so PIPELINING can never be used. If
+ the current host matches hosts_avoid_pipelining, don't do it. */
- while (*p != 0)
- {
- int rc;
- int len = Ustrlen(au->public_name);
- while (isspace(*p)) p++;
+ if ( peer_offered & PEER_OFFERED_PIPE
+ && verify_check_given_host(&ob->hosts_avoid_pipelining, host) != OK)
+ smtp_peer_options |= PEER_OFFERED_PIPE;
- if (strncmpic(au->public_name, p, len) != 0 ||
- (p[len] != 0 && !isspace(p[len])))
- {
- while (*p != 0 && !isspace(*p)) p++;
- continue;
- }
+ DEBUG(D_transport) debug_printf("%susing PIPELINING\n",
+ smtp_peer_options & PEER_OFFERED_PIPE ? "" : "not ");
- /* Found data for a listed mechanism. Call its client entry. Set
- a flag in the outblock so that data is overwritten after sending so
- that reflections don't show it. */
+ if ( peer_offered & PEER_OFFERED_CHUNKING
+ && verify_check_given_host(&ob->hosts_try_chunking, host) != OK)
+ peer_offered &= ~PEER_OFFERED_CHUNKING;
- fail_reason = US"authentication attempt(s) failed";
- outblock.authenticating = TRUE;
- rc = (au->info->clientcode)(au, &inblock, &outblock,
- ob->command_timeout, buffer, sizeof(buffer));
- outblock.authenticating = FALSE;
- DEBUG(D_transport) debug_printf("%s authenticator yielded %d\n",
- au->name, rc);
+ if (peer_offered & PEER_OFFERED_CHUNKING)
+ {DEBUG(D_transport) debug_printf("CHUNKING usable\n");}
- /* A temporary authentication failure must hold up delivery to
- this host. After a permanent authentication failure, we carry on
- to try other authentication methods. If all fail hard, try to
- deliver the message unauthenticated unless require_auth was set. */
+#ifndef DISABLE_PRDR
+ if ( peer_offered & PEER_OFFERED_PRDR
+ && verify_check_given_host(&ob->hosts_try_prdr, host) != OK)
+ peer_offered &= ~PEER_OFFERED_PRDR;
- switch(rc)
- {
- case OK:
- smtp_authenticated = TRUE; /* stops the outer loop */
- break;
-
- /* Failure after writing a command */
-
- case FAIL_SEND:
- goto SEND_FAILED;
-
- /* Failure after reading a response */
-
- case FAIL:
- if (errno != 0 || buffer[0] != '5') goto RESPONSE_FAILED;
- log_write(0, LOG_MAIN, "%s authenticator failed H=%s [%s] %s",
- au->name, host->name, host->address, buffer);
- break;
-
- /* Failure by some other means. In effect, the authenticator
- decided it wasn't prepared to handle this case. Typically this
- is the result of "fail" in an expansion string. Do we need to
- log anything here? Feb 2006: a message is now put in the buffer
- if logging is required. */
-
- case CANCELLED:
- if (*buffer != 0)
- log_write(0, LOG_MAIN, "%s authenticator cancelled "
- "authentication H=%s [%s] %s", au->name, host->name,
- host->address, buffer);
- break;
-
- /* Internal problem, message in buffer. */
-
- case ERROR:
- yield = ERROR;
- set_errno(addrlist, 0, string_copy(buffer), DEFER, FALSE);
- goto SEND_QUIT;
- }
+ if (peer_offered & PEER_OFFERED_PRDR)
+ {DEBUG(D_transport) debug_printf("PRDR usable\n");}
+#endif
- break; /* If not authenticated, try next authenticator */
- } /* Loop for scanning supported server mechanisms */
- } /* Loop for further authenticators */
- }
- }
+ /* Note if the server supports DSN */
+ smtp_peer_options |= peer_offered & PEER_OFFERED_DSN;
+ DEBUG(D_transport) debug_printf("%susing DSN\n",
+ peer_offered & PEER_OFFERED_DSN ? "" : "not ");
- /* If we haven't authenticated, but are required to, give up. */
+ /* Note if the response to EHLO specifies support for the AUTH extension.
+ If it has, check that this host is one we want to authenticate to, and do
+ the business. The host name and address must be available when the
+ authenticator's client driver is running. */
- if (require_auth == OK && !smtp_authenticated)
- {
- yield = DEFER;
- set_errno(addrlist, ERRNO_AUTHFAIL,
- string_sprintf("authentication required but %s", fail_reason), DEFER,
- FALSE);
- goto SEND_QUIT;
+ switch (yield = smtp_auth(buffer, sizeof(buffer), addrlist, host,
+ ob, lflags.esmtp, &inblock, &outblock))
+ {
+ default: goto SEND_QUIT;
+ case OK: break;
+ case FAIL_SEND: goto SEND_FAILED;
+ case FAIL: goto RESPONSE_FAILED;
+ }
}
}
+pipelining_active = !!(smtp_peer_options & PEER_OFFERED_PIPE);
/* The setting up of the SMTP call is now complete. Any subsequent errors are
message-specific. */
-setting_up = FALSE;
+lflags.setting_up = FALSE;
+
+#ifdef SUPPORT_I18N
+if (addrlist->prop.utf8_msg)
+ {
+ lflags.utf8_needed = !addrlist->prop.utf8_downcvt
+ && !addrlist->prop.utf8_downcvt_maybe;
+ DEBUG(D_transport) if (!lflags.utf8_needed)
+ debug_printf("utf8: %s downconvert\n",
+ addrlist->prop.utf8_downcvt ? "mandatory" : "optional");
+ }
+
+/* If this is an international message we need the host to speak SMTPUTF8 */
+if (lflags.utf8_needed && !(peer_offered & PEER_OFFERED_UTF8))
+ {
+ errno = ERRNO_UTF8_FWD;
+ goto RESPONSE_FAILED;
+ }
+#endif
/* If there is a filter command specified for this transport, we can now
set it up. This cannot be done until the identify of the host is known. */
if (tblock->filter_command != NULL)
{
BOOL rc;
- uschar buffer[64];
- sprintf(CS buffer, "%.50s transport", tblock->name);
+ uschar fbuf[64];
+ sprintf(CS fbuf, "%.50s transport", tblock->name);
rc = transport_set_up_command(&transport_filter_argv, tblock->filter_command,
- TRUE, DEFER, addrlist, buffer, NULL);
+ TRUE, DEFER, addrlist, fbuf, NULL);
+ transport_filter_timeout = tblock->filter_timeout;
/* On failure, copy the error to all addresses, abandon the SMTP call, and
yield ERROR. */
if (!rc)
{
- set_errno(addrlist->next, addrlist->basic_errno, addrlist->message, DEFER,
+ set_errno_nohost(addrlist->next, addrlist->basic_errno, addrlist->message, DEFER,
FALSE);
yield = ERROR;
goto SEND_QUIT;
}
+
+ if ( transport_filter_argv
+ && *transport_filter_argv
+ && **transport_filter_argv
+ && peer_offered & PEER_OFFERED_CHUNKING
+ )
+ {
+ peer_offered &= ~PEER_OFFERED_CHUNKING;
+ DEBUG(D_transport) debug_printf("CHUNKING not usable due to transport filter\n");
+ }
}
SEND_MESSAGE:
sync_addr = first_addr;
address_count = 0;
-ok = FALSE;
-send_rset = TRUE;
+lflags.ok = FALSE;
+lflags.send_rset = TRUE;
completed_address = FALSE;
p = buffer;
*p = 0;
-if (smtp_use_size)
+if (peer_offered & PEER_OFFERED_SIZE)
{
sprintf(CS p, " SIZE=%d", message_size+message_linecount+ob->size_addition);
while (*p) p++;
}
-/* Add the authenticated sender address if present */
+#ifndef DISABLE_PRDR
+lflags.prdr_active = FALSE;
+if (peer_offered & PEER_OFFERED_PRDR)
+ for (addr = first_addr; addr; addr = addr->next)
+ if (addr->transport_return == PENDING_DEFER)
+ {
+ for (addr = addr->next; addr; addr = addr->next)
+ if (addr->transport_return == PENDING_DEFER)
+ { /* at least two recipients to send */
+ lflags.prdr_active = TRUE;
+ sprintf(CS p, " PRDR"); p += 5;
+ break;
+ }
+ break;
+ }
+#endif
-if ((smtp_authenticated || ob->authenticated_sender_force) &&
- local_authenticated_sender != NULL)
+#ifdef SUPPORT_I18N
+if ( addrlist->prop.utf8_msg
+ && !addrlist->prop.utf8_downcvt
+ && peer_offered & PEER_OFFERED_UTF8
+ )
+ sprintf(CS p, " SMTPUTF8"), p += 9;
+#endif
+
+/* check if all addresses have lasthop flag */
+/* do not send RET and ENVID if true */
+for (lflags.dsn_all_lasthop = TRUE, addr = first_addr;
+ address_count < max_rcpt && addr != NULL;
+ addr = addr->next)
+ if ((addr->dsn_flags & rf_dsnlasthop) != 1)
+ {
+ lflags.dsn_all_lasthop = FALSE;
+ break;
+ }
+
+/* Add any DSN flags to the mail command */
+
+if (peer_offered & PEER_OFFERED_DSN && !lflags.dsn_all_lasthop)
{
- string_format(p, sizeof(buffer) - (p-buffer), " AUTH=%s",
- auth_xtextencode(local_authenticated_sender,
- Ustrlen(local_authenticated_sender)));
+ if (dsn_ret == dsn_ret_hdrs)
+ { Ustrcpy(p, " RET=HDRS"); p += 9; }
+ else if (dsn_ret == dsn_ret_full)
+ { Ustrcpy(p, " RET=FULL"); p += 9; }
+
+ if (dsn_envid)
+ {
+ string_format(p, sizeof(buffer) - (p-buffer), " ENVID=%s", dsn_envid);
+ while (*p) p++;
+ }
+ }
+
+/* If an authenticated_sender override has been specified for this transport
+instance, expand it. If the expansion is forced to fail, and there was already
+an authenticated_sender for this message, the original value will be used.
+Other expansion failures are serious. An empty result is ignored, but there is
+otherwise no check - this feature is expected to be used with LMTP and other
+cases where non-standard addresses (e.g. without domains) might be required. */
+
+if (smtp_mail_auth_str(p, sizeof(buffer) - (p-buffer), addrlist, ob))
+ {
+ yield = ERROR;
+ goto SEND_QUIT;
}
/* From here until we send the DATA command, we can make use of PIPELINING
When PIPELINING is off, each command written reports that it has flushed the
buffer. */
-pending_MAIL = TRUE; /* The block starts with MAIL */
+lflags.pending_MAIL = TRUE; /* The block starts with MAIL */
+
+ {
+ uschar * s = return_path;
+#ifdef SUPPORT_I18N
+ uschar * errstr = NULL;
+
+ /* If we must downconvert, do the from-address here. Remember we had to
+ for the to-addresses (done below), and also (ugly) for re-doing when building
+ the delivery log line. */
+
+ if ( addrlist->prop.utf8_msg
+ && (addrlist->prop.utf8_downcvt || !(peer_offered & PEER_OFFERED_UTF8))
+ )
+ {
+ if (s = string_address_utf8_to_alabel(return_path, &errstr), errstr)
+ {
+ set_errno_nohost(addrlist, ERRNO_EXPANDFAIL, errstr, DEFER, FALSE);
+ yield = ERROR;
+ goto SEND_QUIT;
+ }
+ setflag(addrlist, af_utf8_downcvt);
+ }
+#endif
+
+ rc = smtp_write_command(&outblock, pipelining_active,
+ "MAIL FROM:<%s>%s\r\n", s, buffer);
+ }
-rc = smtp_write_command(&outblock, smtp_use_pipelining,
- "MAIL FROM:<%s>%s\r\n", return_path, buffer);
mail_command = string_copy(big_buffer); /* Save for later error message */
switch(rc)
{
case -1: /* Transmission error */
- goto SEND_FAILED;
+ goto SEND_FAILED;
case +1: /* Block was sent */
- if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
+ if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
ob->command_timeout))
- {
- if (errno == 0 && buffer[0] == '4')
{
- errno = ERRNO_MAIL4XX;
- addrlist->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
+ if (errno == 0 && buffer[0] == '4')
+ {
+ errno = ERRNO_MAIL4XX;
+ addrlist->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
+ }
+ goto RESPONSE_FAILED;
}
- goto RESPONSE_FAILED;
- }
- pending_MAIL = FALSE;
- break;
+ lflags.pending_MAIL = FALSE;
+ break;
}
/* Pass over all the relevant recipient addresses for this host, which are the
that max_rcpt will be large, so all addresses will be done at once. */
for (addr = first_addr;
- address_count < max_rcpt && addr != NULL;
+ addr && address_count < max_rcpt;
addr = addr->next)
+ if (addr->transport_return == PENDING_DEFER)
{
int count;
BOOL no_flush;
+ uschar * rcpt_addr;
- if (addr->transport_return != PENDING_DEFER) continue;
+ addr->dsn_aware = peer_offered & PEER_OFFERED_DSN
+ ? dsn_support_yes : dsn_support_no;
address_count++;
- no_flush = smtp_use_pipelining && (!mua_wrapper || addr->next != NULL);
+ no_flush = pipelining_active && (!mua_wrapper || addr->next);
+
+ /* Add any DSN flags to the rcpt command and add to the sent string */
+
+ p = buffer;
+ *p = 0;
+
+ if (peer_offered & PEER_OFFERED_DSN && !(addr->dsn_flags & rf_dsnlasthop))
+ {
+ if (addr->dsn_flags & rf_dsnflags)
+ {
+ int i;
+ BOOL first = TRUE;
+ Ustrcpy(p, " NOTIFY=");
+ while (*p) p++;
+ for (i = 0; i < 4; i++)
+ if ((addr->dsn_flags & rf_list[i]) != 0)
+ {
+ if (!first) *p++ = ',';
+ first = FALSE;
+ Ustrcpy(p, rf_names[i]);
+ while (*p) p++;
+ }
+ }
+
+ if (addr->dsn_orcpt)
+ {
+ string_format(p, sizeof(buffer) - (p-buffer), " ORCPT=%s",
+ addr->dsn_orcpt);
+ while (*p) p++;
+ }
+ }
/* Now send the RCPT command, and process outstanding responses when
necessary. After a timeout on RCPT, we just end the function, leaving the
yield as OK, because this error can often mean that there is a problem with
just one address, so we don't want to delay the host. */
- count = smtp_write_command(&outblock, no_flush, "RCPT TO:<%s>%s\r\n",
- transport_rcpt_address(addr, tblock->rcpt_include_affixes), igquotstr);
+ rcpt_addr = transport_rcpt_address(addr, tblock->rcpt_include_affixes);
+
+#ifdef SUPPORT_I18N
+ if ( testflag(addrlist, af_utf8_downcvt)
+ && !(rcpt_addr = string_address_utf8_to_alabel(rcpt_addr, NULL))
+ )
+ {
+ /*XXX could we use a per-address errstr here? Not fail the whole send? */
+ errno = ERRNO_EXPANDFAIL;
+ goto SEND_FAILED;
+ }
+#endif
+
+ count = smtp_write_command(&outblock, no_flush, "RCPT TO:<%s>%s%s\r\n",
+ rcpt_addr, igquotstr, buffer);
+
if (count < 0) goto SEND_FAILED;
if (count > 0)
{
switch(sync_responses(first_addr, tblock->rcpt_include_affixes,
&sync_addr, host, count, ob->address_retry_include_sender,
- pending_MAIL, 0, &inblock, ob->command_timeout, buffer,
+ lflags.pending_MAIL, 0, &inblock, ob->command_timeout, buffer,
sizeof(buffer)))
{
- case 3: ok = TRUE; /* 2xx & 5xx => OK & progress made */
+ case 3: lflags.ok = TRUE; /* 2xx & 5xx => OK & progress made */
case 2: completed_address = TRUE; /* 5xx (only) => progress made */
break;
- case 1: ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
- if (!lmtp) completed_address = TRUE; /* can't tell about progress yet */
+ case 1: lflags.ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
+ if (!lflags.lmtp) completed_address = TRUE; /* can't tell about progress yet */
case 0: /* No 2xx or 5xx, but no probs */
break;
case -1: goto END_OFF; /* Timeout on RCPT */
default: goto RESPONSE_FAILED; /* I/O error, or any MAIL error */
}
- pending_MAIL = FALSE; /* Dealt with MAIL */
+ lflags.pending_MAIL = FALSE; /* Dealt with MAIL */
}
} /* Loop for next address */
if (mua_wrapper)
{
address_item *badaddr;
- for (badaddr = first_addr; badaddr != NULL; badaddr = badaddr->next)
- {
- if (badaddr->transport_return != PENDING_OK) break;
- }
- if (badaddr != NULL)
- {
- set_errno(addrlist, 0, badaddr->message, FAIL,
- testflag(badaddr, af_pass_message));
- ok = FALSE;
- }
+ for (badaddr = first_addr; badaddr; badaddr = badaddr->next)
+ if (badaddr->transport_return != PENDING_OK)
+ {
+ /*XXX could we find a better errno than 0 here? */
+ set_errno_nohost(addrlist, 0, badaddr->message, FAIL,
+ testflag(badaddr, af_pass_message));
+ lflags.ok = FALSE;
+ break;
+ }
}
/* If ok is TRUE, we know we have got at least one good recipient, and must now
send DATA, but if it is FALSE (in the normal, non-wrapper case), we may still
have a good recipient buffered up if we are pipelining. We don't want to waste
time sending DATA needlessly, so we only send it if either ok is TRUE or if we
-are pipelining. The responses are all handled by sync_responses(). */
+are pipelining. The responses are all handled by sync_responses().
+If using CHUNKING, do not send a BDAT until we know how big a chunk we want
+to send is. */
-if (ok || (smtp_use_pipelining && !mua_wrapper))
+if ( !(peer_offered & PEER_OFFERED_CHUNKING)
+ && (lflags.ok || (pipelining_active && !mua_wrapper)))
{
int count = smtp_write_command(&outblock, FALSE, "DATA\r\n");
+
if (count < 0) goto SEND_FAILED;
switch(sync_responses(first_addr, tblock->rcpt_include_affixes, &sync_addr,
- host, count, ob->address_retry_include_sender, pending_MAIL,
- ok? +1 : -1, &inblock, ob->command_timeout, buffer, sizeof(buffer)))
+ host, count, ob->address_retry_include_sender, lflags.pending_MAIL,
+ lflags.ok ? +1 : -1, &inblock, ob->command_timeout, buffer, sizeof(buffer)))
{
- case 3: ok = TRUE; /* 2xx & 5xx => OK & progress made */
+ case 3: lflags.ok = TRUE; /* 2xx & 5xx => OK & progress made */
case 2: completed_address = TRUE; /* 5xx (only) => progress made */
break;
- case 1: ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
- if (!lmtp) completed_address = TRUE; /* can't tell about progress yet */
+ case 1: lflags.ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
+ if (!lflags.lmtp) completed_address = TRUE; /* can't tell about progress yet */
case 0: break; /* No 2xx or 5xx, but no probs */
case -1: goto END_OFF; /* Timeout on RCPT */
default: goto RESPONSE_FAILED; /* I/O error, or any MAIL/DATA error */
}
+ pipelining_active = FALSE;
+ data_command = string_copy(big_buffer); /* Save for later error message */
}
-/* Save the first address of the next batch. */
-
-first_addr = addr;
-
/* If there were no good recipients (but otherwise there have been no
problems), just set ok TRUE, since we have handled address-specific errors
already. Otherwise, it's OK to send the message. Use the check/escape mechanism
well as body. Set the appropriate timeout value to be used for each chunk.
(Haven't been able to make it work using select() for writing yet.) */
-if (!ok) ok = TRUE; else
+if (!(peer_offered & PEER_OFFERED_CHUNKING) && !lflags.ok)
+ {
+ /* Save the first address of the next batch. */
+ first_addr = addr;
+
+ lflags.ok = TRUE;
+ }
+else
{
+ transport_ctx tctx = {
+ tblock,
+ addrlist,
+ US".", US"..", /* Escaping strings */
+ topt_use_crlf | topt_escape_headers
+ | (tblock->body_only ? topt_no_headers : 0)
+ | (tblock->headers_only ? topt_no_body : 0)
+ | (tblock->return_path_add ? topt_add_return_path : 0)
+ | (tblock->delivery_date_add ? topt_add_delivery_date : 0)
+ | (tblock->envelope_to_add ? topt_add_envelope_to : 0)
+ };
+
+ /* If using CHUNKING we need a callback from the generic transport
+ support to us, for the sending of BDAT smtp commands and the reaping
+ of responses. The callback needs a whole bunch of state so set up
+ a transport-context structure to be passed around. */
+
+ if (peer_offered & PEER_OFFERED_CHUNKING)
+ {
+ tctx.check_string = tctx.escape_string = NULL;
+ tctx.options |= topt_use_bdat;
+ tctx.chunk_cb = smtp_chunk_cmd_callback;
+ tctx.inblock = &inblock;
+ tctx.outblock = &outblock;
+ tctx.host = host;
+ tctx.first_addr = first_addr;
+ tctx.sync_addr = &sync_addr;
+ tctx.pending_MAIL = lflags.pending_MAIL;
+ tctx.pending_BDAT = FALSE;
+ tctx.good_RCPT = lflags.ok;
+ tctx.completed_address = &completed_address;
+ tctx.cmd_count = 0;
+ tctx.buffer = buffer;
+ }
+ else
+ tctx.options |= topt_end_dot;
+
+ /* Save the first address of the next batch. */
+ first_addr = addr;
+
+ /* Responses from CHUNKING commands go in buffer. Otherwise,
+ there has not been a response. */
+
+ buffer[0] = 0;
+
sigalrm_seen = FALSE;
transport_write_timeout = ob->data_timeout;
smtp_command = US"sending data block"; /* For error messages */
DEBUG(D_transport|D_v)
- debug_printf(" SMTP>> writing message and terminating \".\"\n");
+ if (peer_offered & PEER_OFFERED_CHUNKING)
+ debug_printf(" will write message using CHUNKING\n");
+ else
+ debug_printf(" SMTP>> writing message and terminating \".\"\n");
transport_count = 0;
-#ifdef EXPERIMENTAL_DOMAINKEYS
- if ( (ob->dk_private_key != NULL) && (ob->dk_selector != NULL) )
- ok = dk_transport_write_message(addrlist, inblock.sock,
- topt_use_crlf | topt_end_dot | topt_escape_headers |
- (tblock->body_only? topt_no_headers : 0) |
- (tblock->headers_only? topt_no_body : 0) |
- (tblock->return_path_add? topt_add_return_path : 0) |
- (tblock->delivery_date_add? topt_add_delivery_date : 0) |
- (tblock->envelope_to_add? topt_add_envelope_to : 0),
- 0, /* No size limit */
- tblock->add_headers, tblock->remove_headers,
- US".", US"..", /* Escaping strings */
- tblock->rewrite_rules, tblock->rewrite_existflags,
- ob->dk_private_key, ob->dk_domain, ob->dk_selector,
- ob->dk_canon, ob->dk_headers, ob->dk_strict);
- else
+
+#ifndef DISABLE_DKIM
+ lflags.ok = dkim_transport_write_message(inblock.sock, &tctx, &ob->dkim);
+#else
+ lflags.ok = transport_write_message(inblock.sock, &tctx, 0);
#endif
- ok = transport_write_message(addrlist, inblock.sock,
- topt_use_crlf | topt_end_dot | topt_escape_headers |
- (tblock->body_only? topt_no_headers : 0) |
- (tblock->headers_only? topt_no_body : 0) |
- (tblock->return_path_add? topt_add_return_path : 0) |
- (tblock->delivery_date_add? topt_add_delivery_date : 0) |
- (tblock->envelope_to_add? topt_add_envelope_to : 0),
- 0, /* No size limit */
- tblock->add_headers, tblock->remove_headers,
- US".", US"..", /* Escaping strings */
- tblock->rewrite_rules, tblock->rewrite_existflags);
/* transport_write_message() uses write() because it is called from other
places to write to non-sockets. This means that under some OS (e.g. Solaris)
transport_write_timeout = 0; /* for subsequent transports */
/* Failure can either be some kind of I/O disaster (including timeout),
- or the failure of a transport filter or the expansion of added headers. */
+ or the failure of a transport filter or the expansion of added headers.
+ Or, when CHUNKING, it can be a protocol-detected failure. */
- if (!ok)
- {
- buffer[0] = 0; /* There hasn't been a response */
+ if (!lflags.ok)
goto RESPONSE_FAILED;
- }
/* We used to send the terminating "." explicitly here, but because of
buffering effects at both ends of TCP/IP connections, you don't gain
smtp_command = US"end of data";
- /* For SMTP, we now read a single response that applies to the whole message.
- If it is OK, then all the addresses have been delivered. */
+ if (peer_offered & PEER_OFFERED_CHUNKING && tctx.cmd_count > 1)
+ {
+ /* Reap any outstanding MAIL & RCPT commands, but not a DATA-go-ahead */
+ switch(sync_responses(first_addr, tblock->rcpt_include_affixes, &sync_addr,
+ host, tctx.cmd_count-1, ob->address_retry_include_sender,
+ lflags.pending_MAIL, 0,
+ &inblock, ob->command_timeout, buffer, sizeof(buffer)))
+ {
+ case 3: lflags.ok = TRUE; /* 2xx & 5xx => OK & progress made */
+ case 2: completed_address = TRUE; /* 5xx (only) => progress made */
+ break;
+
+ case 1: lflags.ok = TRUE; /* 2xx (only) => OK, but if LMTP, */
+ if (!lflags.lmtp) completed_address = TRUE; /* can't tell about progress yet */
+ case 0: break; /* No 2xx or 5xx, but no probs */
+
+ case -1: goto END_OFF; /* Timeout on RCPT */
+ default: goto RESPONSE_FAILED; /* I/O error, or any MAIL/DATA error */
+ }
+ }
+
+#ifndef DISABLE_PRDR
+ /* For PRDR we optionally get a partial-responses warning
+ * followed by the individual responses, before going on with
+ * the overall response. If we don't get the warning then deal
+ * with per non-PRDR. */
+ if(lflags.prdr_active)
+ {
+ lflags.ok = smtp_read_response(&inblock, buffer, sizeof(buffer), '3',
+ ob->final_timeout);
+ if (!lflags.ok && errno == 0) switch(buffer[0])
+ {
+ case '2': lflags.prdr_active = FALSE;
+ lflags.ok = TRUE;
+ break;
+ case '4': errno = ERRNO_DATA4XX;
+ addrlist->more_errno |=
+ ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
+ break;
+ }
+ }
+ else
+#endif
+
+ /* For non-PRDR SMTP, we now read a single response that applies to the
+ whole message. If it is OK, then all the addresses have been delivered. */
- if (!lmtp)
+ if (!lflags.lmtp)
{
- ok = smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
+ lflags.ok = smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
ob->final_timeout);
- if (!ok && errno == 0 && buffer[0] == '4')
+ if (!lflags.ok && errno == 0 && buffer[0] == '4')
{
errno = ERRNO_DATA4XX;
addrlist->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
software before the spool gets updated. Also record the final SMTP
confirmation if needed (for SMTP only). */
- if (ok)
+ if (lflags.ok)
{
int flag = '=';
int delivery_time = (int)(time(NULL) - start_delivery_time);
int len;
- host_item *thost;
uschar *conf = NULL;
- send_rset = FALSE;
-
- /* Make a copy of the host if it is local to this invocation
- of the transport. */
- if (copy_host)
- {
- thost = store_get(sizeof(host_item));
- *thost = *host;
- thost->name = string_copy(host->name);
- thost->address = string_copy(host->address);
- }
- else thost = host;
+ lflags.send_rset = FALSE;
+ pipelining_active = FALSE;
/* Set up confirmation if needed - applies only to SMTP */
- if ((log_extra_selector & LX_smtp_confirmation) != 0 && !lmtp)
+ if (
+#ifdef DISABLE_EVENT
+ LOGGING(smtp_confirmation) &&
+#endif
+ !lflags.lmtp
+ )
{
- uschar *s = string_printing(buffer);
- conf = (s == buffer)? (uschar *)string_copy(s) : s;
+ const uschar *s = string_printing(buffer);
+ /* deconst cast ok here as string_printing was checked to have alloc'n'copied */
+ conf = (s == buffer)? (uschar *)string_copy(s) : US s;
}
- /* Process all transported addresses - for LMTP, read a status for
+ /* Process all transported addresses - for LMTP or PRDR, read a status for
each one. */
for (addr = addrlist; addr != first_addr; addr = addr->next)
address. For temporary errors, add a retry item for the address so that
it doesn't get tried again too soon. */
- if (lmtp)
+#ifndef DISABLE_PRDR
+ if (lflags.lmtp || lflags.prdr_active)
+#else
+ if (lflags.lmtp)
+#endif
{
if (!smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
ob->final_timeout))
{
if (errno != 0 || buffer[0] == 0) goto RESPONSE_FAILED;
- addr->message = string_sprintf("LMTP error after %s: %s",
- big_buffer, string_printing(buffer));
+ addr->message = string_sprintf(
+#ifndef DISABLE_PRDR
+ "%s error after %s: %s", lflags.prdr_active ? "PRDR":"LMTP",
+#else
+ "LMTP error after %s: %s",
+#endif
+ data_command, string_printing(buffer));
setflag(addr, af_pass_message); /* Allow message to go to user */
if (buffer[0] == '5')
addr->transport_return = FAIL;
errno = ERRNO_DATA4XX;
addr->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
addr->transport_return = DEFER;
- retry_add_item(addr, addr->address_retry_key, 0);
+#ifndef DISABLE_PRDR
+ if (!lflags.prdr_active)
+#endif
+ retry_add_item(addr, addr->address_retry_key, 0);
}
continue;
}
completed_address = TRUE; /* NOW we can set this flag */
+ if (LOGGING(smtp_confirmation))
+ {
+ const uschar *s = string_printing(buffer);
+ /* deconst cast ok here as string_printing was checked to have alloc'n'copied */
+ conf = (s == buffer)? (uschar *)string_copy(s) : US s;
+ }
}
/* SMTP, or success return from LMTP for this address. Pass back the
addr->transport_return = OK;
addr->more_errno = delivery_time;
- addr->host_used = thost;
+ addr->host_used = host;
addr->special_action = flag;
addr->message = conf;
+#ifndef DISABLE_PRDR
+ if (lflags.prdr_active) addr->flags |= af_prdr_used;
+#endif
+ if (peer_offered & PEER_OFFERED_CHUNKING) addr->flags |= af_chunking_used;
flag = '-';
- /* Update the journal. For homonymic addresses, use the base address plus
- the transport name. See lots of comments in deliver.c about the reasons
- for the complications when homonyms are involved. Just carry on after
- write error, as it may prove possible to update the spool file later. */
-
- if (testflag(addr, af_homonym))
- sprintf(CS buffer, "%.500s/%s\n", addr->unique + 3, tblock->name);
- else
- sprintf(CS buffer, "%.500s\n", addr->unique);
-
- DEBUG(D_deliver) debug_printf("journalling %s", buffer);
- len = Ustrlen(CS buffer);
- if (write(journal_fd, buffer, len) != len)
- log_write(0, LOG_MAIN|LOG_PANIC, "failed to write journal for "
- "%s: %s", buffer, strerror(errno));
+#ifndef DISABLE_PRDR
+ if (!lflags.prdr_active)
+#endif
+ {
+ /* Update the journal. For homonymic addresses, use the base address plus
+ the transport name. See lots of comments in deliver.c about the reasons
+ for the complications when homonyms are involved. Just carry on after
+ write error, as it may prove possible to update the spool file later. */
+
+ if (testflag(addr, af_homonym))
+ sprintf(CS buffer, "%.500s/%s\n", addr->unique + 3, tblock->name);
+ else
+ sprintf(CS buffer, "%.500s\n", addr->unique);
+
+ DEBUG(D_deliver) debug_printf("journalling %s\n", buffer);
+ len = Ustrlen(CS buffer);
+ if (write(journal_fd, buffer, len) != len)
+ log_write(0, LOG_MAIN|LOG_PANIC, "failed to write journal for "
+ "%s: %s", buffer, strerror(errno));
+ }
}
+#ifndef DISABLE_PRDR
+ if (lflags.prdr_active)
+ {
+ /* PRDR - get the final, overall response. For any non-success
+ upgrade all the address statuses. */
+ lflags.ok = smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
+ ob->final_timeout);
+ if (!lflags.ok)
+ {
+ if(errno == 0 && buffer[0] == '4')
+ {
+ errno = ERRNO_DATA4XX;
+ addrlist->more_errno |= ((buffer[1] - '0')*10 + buffer[2] - '0') << 8;
+ }
+ for (addr = addrlist; addr != first_addr; addr = addr->next)
+ if (buffer[0] == '5' || addr->transport_return == OK)
+ addr->transport_return = PENDING_OK; /* allow set_errno action */
+ goto RESPONSE_FAILED;
+ }
+
+ /* Update the journal, or setup retry. */
+ for (addr = addrlist; addr != first_addr; addr = addr->next)
+ if (addr->transport_return == OK)
+ {
+ if (testflag(addr, af_homonym))
+ sprintf(CS buffer, "%.500s/%s\n", addr->unique + 3, tblock->name);
+ else
+ sprintf(CS buffer, "%.500s\n", addr->unique);
+
+ DEBUG(D_deliver) debug_printf("journalling(PRDR) %s\n", buffer);
+ len = Ustrlen(CS buffer);
+ if (write(journal_fd, buffer, len) != len)
+ log_write(0, LOG_MAIN|LOG_PANIC, "failed to write journal for "
+ "%s: %s", buffer, strerror(errno));
+ }
+ else if (addr->transport_return == DEFER)
+ retry_add_item(addr, addr->address_retry_key, -2);
+ }
+#endif
+
/* Ensure the journal file is pushed out to disk. */
if (EXIMfsync(journal_fd) < 0)
here during the setting up phase (i.e. before MAIL FROM) then always defer, as
the problem is not related to this specific message. */
-if (!ok)
+if (!lflags.ok)
{
- int code;
+ int code, set_rc;
+ uschar * set_message;
RESPONSE_FAILED:
- save_errno = errno;
- message = NULL;
- send_quit = check_response(host, &save_errno, addrlist->more_errno,
- buffer, &code, &message, &pass_message);
- goto FAILED;
+ {
+ save_errno = errno;
+ message = NULL;
+ lflags.send_quit = check_response(host, &save_errno, addrlist->more_errno,
+ buffer, &code, &message, &pass_message);
+ goto FAILED;
+ }
SEND_FAILED:
- save_errno = errno;
- code = '4';
- message = US string_sprintf("send() to %s [%s] failed: %s",
- host->name, host->address, strerror(save_errno));
- send_quit = FALSE;
- goto FAILED;
+ {
+ save_errno = errno;
+ code = '4';
+ message = US string_sprintf("send() to %s [%s] failed: %s",
+ host->name, host->address, strerror(save_errno));
+ lflags.send_quit = FALSE;
+ goto FAILED;
+ }
/* This label is jumped to directly when a TLS negotiation has failed,
or was not done for a host for which it is required. Values will be set
in message and save_errno, and setting_up will always be true. Treat as
a temporary error. */
- #ifdef SUPPORT_TLS
+#ifdef SUPPORT_TLS
TLS_FAILED:
code = '4';
- #endif
+#endif
/* If the failure happened while setting up the call, see if the failure was
a 5xx response (this will either be on connection, or following HELO - a 5xx
tried again for a while. */
FAILED:
- ok = FALSE; /* For when reached by GOTO */
+ lflags.ok = FALSE; /* For when reached by GOTO */
+ set_message = message;
- if (setting_up)
- {
+ if (lflags.setting_up)
if (code == '5')
- {
- set_errno(addrlist, save_errno, message, FAIL, pass_message);
- }
+ set_rc = FAIL;
else
- {
- set_errno(addrlist, save_errno, message, DEFER, pass_message);
- yield = DEFER;
- }
- }
+ yield = set_rc = DEFER;
/* We want to handle timeouts after MAIL or "." and loss of connection after
"." specially. They can indicate a problem with the sender address or with
switch(save_errno)
{
+#ifdef SUPPORT_I18N
+ case ERRNO_UTF8_FWD:
+ code = '5';
+ /*FALLTHROUGH*/
+#endif
case 0:
case ERRNO_MAIL4XX:
case ERRNO_DATA4XX:
- message_error = TRUE;
- break;
+ message_error = TRUE;
+ break;
case ETIMEDOUT:
- message_error = Ustrncmp(smtp_command,"MAIL",4) == 0 ||
- Ustrncmp(smtp_command,"end ",4) == 0;
- break;
+ message_error = Ustrncmp(smtp_command,"MAIL",4) == 0 ||
+ Ustrncmp(smtp_command,"end ",4) == 0;
+ break;
case ERRNO_SMTPCLOSED:
- message_error = Ustrncmp(smtp_command,"end ",4) == 0;
- break;
+ message_error = Ustrncmp(smtp_command,"end ",4) == 0;
+ break;
default:
- message_error = FALSE;
- break;
+ message_error = FALSE;
+ break;
}
/* Handle the cases that are treated as message errors. These are:
(a) negative response or timeout after MAIL
(b) negative response after DATA
(c) negative response or timeout or dropped connection after "."
+ (d) utf8 support required and not offered
It won't be a negative response or timeout after RCPT, as that is dealt
with separately above. The action in all cases is to set an appropriate
if (message_error)
{
if (mua_wrapper) code = '5'; /* Force hard failure in wrapper mode */
- set_errno(addrlist, save_errno, message, (code == '5')? FAIL : DEFER,
- pass_message);
/* If there's an errno, the message contains just the identity of
the host. */
- if (code != '5') /* Anything other than 5 is treated as temporary */
+ if (code == '5')
+ set_rc = FAIL;
+ else /* Anything other than 5 is treated as temporary */
{
+ set_rc = DEFER;
if (save_errno > 0)
message = US string_sprintf("%s: %s", message, strerror(save_errno));
if (host->next != NULL) log_write(0, LOG_MAIN, "%s", message);
- deliver_msglog("%s %s\n", tod_stamp(tod_log), message);
+ msglog_line(host, message);
*message_defer = TRUE;
}
}
else
{
+ set_rc = DEFER;
yield = (save_errno == ERRNO_CHHEADER_FAIL ||
save_errno == ERRNO_FILTER_FAIL)? ERROR : DEFER;
- set_errno(addrlist, save_errno, message, DEFER, pass_message);
}
}
+
+ set_errno(addrlist, save_errno, set_message, set_rc, pass_message, host
+#ifdef EXPERIMENTAL_DSN_INFO
+ , smtp_greeting, helo_response
+#endif
+ );
}
DEBUG(D_transport)
debug_printf("ok=%d send_quit=%d send_rset=%d continue_more=%d "
- "yield=%d first_address is %sNULL\n", ok, send_quit, send_rset,
- continue_more, yield, (first_addr == NULL)? "":"not ");
+ "yield=%d first_address is %sNULL\n", lflags.ok, lflags.send_quit,
+ lflags.send_rset, continue_more, yield, first_addr ? "not " : "");
-if (completed_address && ok && send_quit)
+if (completed_address && lflags.ok && lflags.send_quit)
{
BOOL more;
- if (first_addr != NULL || continue_more ||
- (
- (tls_active < 0 ||
- verify_check_this_host(&(ob->hosts_nopass_tls), NULL, host->name,
- host->address, NULL) != OK)
+ smtp_compare_t t_compare;
+
+ t_compare.tblock = tblock;
+ t_compare.current_sender_address = sender_address;
+
+ if ( first_addr != NULL
+ || continue_more
+ || ( ( tls_out.active < 0
+ || verify_check_given_host(&ob->hosts_nopass_tls, host) != OK
+ )
&&
transport_check_waiting(tblock->name, host->name,
- tblock->connection_max_messages, new_message_id, &more)
- ))
+ tblock->connection_max_messages, new_message_id, &more,
+ (oicf)smtp_are_same_identities, (void*)&t_compare)
+ ) )
{
uschar *msg;
BOOL pass_message;
- if (send_rset)
+ if (lflags.send_rset)
{
- if (! (ok = smtp_write_command(&outblock, FALSE, "RSET\r\n") >= 0))
+ if (! (lflags.ok = smtp_write_command(&outblock, FALSE, "RSET\r\n") >= 0))
{
msg = US string_sprintf("send() to %s [%s] failed: %s", host->name,
host->address, strerror(save_errno));
- send_quit = FALSE;
+ lflags.send_quit = FALSE;
}
- else if (! (ok = smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
- ob->command_timeout)))
+ else if (! (lflags.ok = smtp_read_response(&inblock, buffer,
+ sizeof(buffer), '2', ob->command_timeout)))
{
int code;
- send_quit = check_response(host, &errno, 0, buffer, &code, &msg,
+ lflags.send_quit = check_response(host, &errno, 0, buffer, &code, &msg,
&pass_message);
- if (!send_quit)
+ if (!lflags.send_quit)
{
- DEBUG(D_transport) debug_printf("%s\n", msg);
+ DEBUG(D_transport) debug_printf("H=%s [%s] %s\n",
+ host->name, host->address, msg);
}
}
}
/* Either RSET was not needed, or it succeeded */
- if (ok)
+ if (lflags.ok)
{
if (first_addr != NULL) /* More addresses still to be sent */
{ /* in this run of the transport */
when TLS is shut down. We test for this by sending a new EHLO. If we
don't get a good response, we don't attempt to pass the socket on. */
- #ifdef SUPPORT_TLS
- if (tls_active >= 0)
+#ifdef SUPPORT_TLS
+ if (tls_out.active >= 0)
{
- tls_close(TRUE);
- ok = smtp_write_command(&outblock,FALSE,"EHLO %s\r\n",helo_data) >= 0 &&
- smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
- ob->command_timeout);
+ tls_close(FALSE, TRUE);
+ smtp_peer_options = smtp_peer_options_wrap;
+ if (lflags.smtps)
+ lflags.ok = FALSE;
+ else
+ lflags.ok = smtp_write_command(&outblock,FALSE,"EHLO %s\r\n",helo_data) >= 0 &&
+ smtp_read_response(&inblock, buffer, sizeof(buffer), '2',
+ ob->command_timeout);
}
- #endif
+#endif
- /* If the socket is successfully passed, we musn't send QUIT (or
+ /* If the socket is successfully passed, we mustn't send QUIT (or
indeed anything!) from here. */
- if (ok && transport_pass_socket(tblock->name, host->name, host->address,
- new_message_id, inblock.sock))
- {
- send_quit = FALSE;
- }
+/*XXX DSN_INFO: assume likely to do new HELO; but for greet we'll want to
+propagate it from the initial
+*/
+ if (lflags.ok && transport_pass_socket(tblock->name, host->name,
+ host->address, new_message_id, inblock.sock))
+ lflags.send_quit = FALSE;
}
/* If RSET failed and there are addresses left, they get deferred. */
- else set_errno(first_addr, errno, msg, DEFER, FALSE);
+ else set_errno(first_addr, errno, msg, DEFER, FALSE, host
+#ifdef EXPERIMENTAL_DSN_INFO
+ , smtp_greeting, helo_response
+#endif
+ );
}
}
operation, the old commented-out code was removed on 17-Sep-99. */
SEND_QUIT:
-if (send_quit) (void)smtp_write_command(&outblock, FALSE, "QUIT\r\n");
+if (lflags.send_quit) (void)smtp_write_command(&outblock, FALSE, "QUIT\r\n");
END_OFF:
#ifdef SUPPORT_TLS
-tls_close(TRUE);
+tls_close(FALSE, TRUE);
#endif
/* Close the socket, and return the appropriate value, first setting
-continue_transport and continue_hostname NULL to prevent any other addresses
-that may include the host from trying to re-use a continuation socket. This
works because the NULL setting is passed back to the calling process, and
remote_max_parallel is forced to 1 when delivering over an existing connection,
specified in the transports, and therefore not visible at top level, in which
case continue_more won't get set. */
+HDEBUG(D_transport|D_acl|D_v) debug_printf(" SMTP(close)>>\n");
+if (lflags.send_quit)
+ {
+ shutdown(outblock.sock, SHUT_WR);
+ if (fcntl(inblock.sock, F_SETFL, O_NONBLOCK) == 0)
+ for (rc = 16; read(inblock.sock, inbuffer, sizeof(inbuffer)) > 0 && rc > 0;)
+ rc--; /* drain socket */
+ }
(void)close(inblock.sock);
+
+#ifndef DISABLE_EVENT
+(void) event_raise(tblock->event_action, US"tcp:close", NULL);
+#endif
+
continue_transport = NULL;
continue_hostname = NULL;
return yield;
{
address_item *first_addr = NULL;
address_item *addr;
-for (addr = addrlist; addr != NULL; addr = addr->next)
- {
- if (addr->transport_return != DEFER) continue;
- if (first_addr == NULL) first_addr = addr;
- addr->transport_return = PENDING_DEFER;
- addr->basic_errno = 0;
- addr->more_errno = (host->mx >= 0)? 'M' : 'A';
- addr->message = NULL;
- #ifdef SUPPORT_TLS
- addr->cipher = NULL;
- addr->peerdn = NULL;
- #endif
- }
+for (addr = addrlist; addr; addr = addr->next)
+ if (addr->transport_return == DEFER)
+ {
+ if (!first_addr) first_addr = addr;
+ addr->transport_return = PENDING_DEFER;
+ addr->basic_errno = 0;
+ addr->more_errno = (host->mx >= 0)? 'M' : 'A';
+ addr->message = NULL;
+#ifdef SUPPORT_TLS
+ addr->cipher = NULL;
+ addr->ourcert = NULL;
+ addr->peercert = NULL;
+ addr->peerdn = NULL;
+ addr->ocsp = OCSP_NOT_REQ;
+#endif
+#ifdef EXPERIMENTAL_DSN_INFO
+ addr->smtp_greeting = NULL;
+ addr->helo_response = NULL;
+#endif
+ }
return first_addr;
}
int total_hosts_tried = 0;
address_item *addr;
BOOL expired = TRUE;
-BOOL continuing = continue_hostname != NULL;
uschar *expanded_hosts = NULL;
uschar *pistring;
uschar *tid = string_sprintf("%s transport", tblock->name);
DEBUG(D_transport)
{
debug_printf("%s transport entered\n", tblock->name);
- for (addr = addrlist; addr != NULL; addr = addr->next)
+ for (addr = addrlist; addr; addr = addr->next)
debug_printf(" %s\n", addr->address);
- if (continuing) debug_printf("already connected to %s [%s]\n",
+ if (hostlist)
+ {
+ debug_printf("hostlist:\n");
+ for (host = hostlist; host; host = host->next)
+ debug_printf(" %s:%d\n", host->name, host->port);
+ }
+ if (continue_hostname) debug_printf("already connected to %s [%s]\n",
continue_hostname, continue_host_address);
}
a host list with hosts_override set, use the host list supplied with the
transport. It is an error for this not to exist. */
-if (hostlist == NULL || (ob->hosts_override && ob->hosts != NULL))
+if (!hostlist || (ob->hosts_override && ob->hosts))
{
- if (ob->hosts == NULL)
+ if (!ob->hosts)
{
addrlist->message = string_sprintf("%s transport called with no hosts set",
tblock->name);
as the hosts string will never be used again, it doesn't matter that we
replace all the : characters with zeros. */
- if (ob->hostlist == NULL)
+ if (!ob->hostlist)
{
uschar *s = ob->hosts;
if (Ustrchr(s, '$') != NULL)
{
- expanded_hosts = expand_string(s);
- if (expanded_hosts == NULL)
+ if (!(expanded_hosts = expand_string(s)))
{
addrlist->message = string_sprintf("failed to expand list of hosts "
"\"%s\" in %s transport: %s", s, tblock->name, expand_string_message);
- addrlist->transport_return = search_find_defer? DEFER : PANIC;
+ addrlist->transport_return = search_find_defer ? DEFER : PANIC;
return FALSE; /* Only top address has status */
}
DEBUG(D_transport) debug_printf("expanded list of hosts \"%s\" to "
host_build_hostlist(&hostlist, s, ob->hosts_randomize);
+ /* Check that the expansion yielded something useful. */
+ if (!hostlist)
+ {
+ addrlist->message =
+ string_sprintf("%s transport has empty hosts setting", tblock->name);
+ addrlist->transport_return = PANIC;
+ return FALSE; /* Only top address has status */
+ }
+
/* If there was no expansion of hosts, save the host list for
next time. */
- if (expanded_hosts == NULL) ob->hostlist = hostlist;
+ if (!expanded_hosts) ob->hostlist = hostlist;
}
/* This is not the first time this transport has been run in this delivery;
the host list was built previously. */
- else hostlist = ob->hostlist;
+ else
+ hostlist = ob->hostlist;
}
/* The host list was supplied with the address. If hosts_randomize is set, we
already been randomized (but don't bother if continuing down an existing
connection). */
-else if (ob->hosts_randomize && hostlist->mx == MX_NONE && !continuing)
+else if (ob->hosts_randomize && hostlist->mx == MX_NONE && !continue_hostname)
{
host_item *newlist = NULL;
- while (hostlist != NULL)
+ while (hostlist)
{
host_item *h = hostlist;
hostlist = hostlist->next;
h->sort_key = random_number(100);
- if (newlist == NULL)
+ if (!newlist)
{
h->next = NULL;
newlist = h;
else
{
host_item *hh = newlist;
- while (hh->next != NULL)
+ while (hh->next)
{
if (h->sort_key < hh->next->sort_key) break;
hh = hh->next;
hostlist = addrlist->host_list = newlist;
}
-
/* Sort out the default port. */
if (!smtp_get_port(ob->port, addrlist, &port, tid)) return FALSE;
-
/* For each host-plus-IP-address on the list:
. If this is a continued delivery and the host isn't the one with the
time. After that, set the status and error data for any addresses that haven't
had it set already. */
-for (cutoff_retry = 0; expired &&
- cutoff_retry < ((ob->delay_after_cutoff)? 1 : 2);
+for (cutoff_retry = 0;
+ expired && cutoff_retry < (ob->delay_after_cutoff ? 1 : 2);
cutoff_retry++)
{
host_item *nexthost = NULL;
int unexpired_hosts_tried = 0;
for (host = hostlist;
- host != NULL &&
- unexpired_hosts_tried < ob->hosts_max_try &&
- total_hosts_tried < ob->hosts_max_try_hardlimit;
+ host
+ && unexpired_hosts_tried < ob->hosts_max_try
+ && total_hosts_tried < ob->hosts_max_try_hardlimit;
host = nexthost)
{
int rc;
int host_af;
uschar *rs;
- BOOL serialized = FALSE;
BOOL host_is_expired = FALSE;
BOOL message_defer = FALSE;
- BOOL ifchanges = FALSE;
BOOL some_deferred = FALSE;
address_item *first_addr = NULL;
uschar *interface = NULL;
Note that we mustn't skip unusable hosts if the address is not unset; they
may be needed as expired hosts on the 2nd time round the cutoff loop. */
- if (host->address == NULL)
+ if (!host->address)
{
int new_port, flags;
host_item *hh;
- uschar *canonical_name;
if (host->status >= hstatus_unusable)
{
if (ob->dns_search_parents) flags |= HOST_FIND_SEARCH_PARENTS;
if (ob->gethostbyname || string_is_ip_address(host->name, NULL) != 0)
- rc = host_find_byname(host, NULL, flags, &canonical_name, TRUE);
+ rc = host_find_byname(host, NULL, flags, NULL, TRUE);
else
rc = host_find_bydns(host, NULL, flags, NULL, NULL, NULL,
- &canonical_name, NULL);
+ &ob->dnssec, /* domains for request/require */
+ NULL, NULL);
/* Update the host (and any additional blocks, resulting from
multihoming) with a host-specific port, if any. */
"HOST_FIND_AGAIN" : "HOST_FIND_FAILED", host->name);
host->status = hstatus_unusable;
- for (addr = addrlist; addr != NULL; addr = addr->next)
+ for (addr = addrlist; addr; addr = addr->next)
{
if (addr->transport_return != DEFER) continue;
addr->basic_errno = ERRNO_UNKNOWNHOST;
if (rc == HOST_FOUND_LOCAL && !ob->allow_localhost)
{
- for (addr = addrlist; addr != NULL; addr = addr->next)
+ for (addr = addrlist; addr; addr = addr->next)
{
addr->basic_errno = 0;
addr->message = string_sprintf("%s transport found host %s to be "
result of the lookup. Set expired FALSE, to save the outer loop executing
twice. */
- if (continuing && (Ustrcmp(continue_hostname, host->name) != 0 ||
- Ustrcmp(continue_host_address, host->address) != 0))
+ if ( continue_hostname
+ && ( Ustrcmp(continue_hostname, host->name) != 0
+ || Ustrcmp(continue_host_address, host->address) != 0
+ ) )
{
expired = FALSE;
continue; /* With next host */
doing a two-stage queue run, don't do this if forcing. */
if ((!deliver_force || queue_2stage) && (queue_smtp ||
- match_isinlist(addrlist->domain, &queue_smtp_domains, 0,
+ match_isinlist(addrlist->domain,
+ (const uschar **)&queue_smtp_domains, 0,
&domainlist_anchor, NULL, MCL_DOMAIN, TRUE, NULL) == OK))
{
expired = FALSE;
- for (addr = addrlist; addr != NULL; addr = addr->next)
- {
- if (addr->transport_return != DEFER) continue;
- addr->message = US"domain matches queue_smtp_domains, or -odqs set";
- }
+ for (addr = addrlist; addr; addr = addr->next)
+ if (addr->transport_return == DEFER)
+ addr->message = US"domain matches queue_smtp_domains, or -odqs set";
continue; /* With next host */
}
deliver_host = host->name;
deliver_host_address = host->address;
+ lookup_dnssec_authenticated = host->dnssec == DS_YES ? US"yes"
+ : host->dnssec == DS_NO ? US"no"
+ : US"";
/* Set up a string for adding to the retry key if the port number is not
the standard SMTP port. A host may have its own port setting that overrides
the default. */
- pistring = string_sprintf(":%d", (host->port == PORT_NONE)?
- port : host->port);
+ pistring = string_sprintf(":%d", host->port == PORT_NONE
+ ? port : host->port);
if (Ustrcmp(pistring, ":25") == 0) pistring = US"";
/* Select IPv4 or IPv6, and choose an outgoing interface. If the interface
- string changes upon expansion, we must add it to the key that is used for
- retries, because connections to the same host from a different interface
- should be treated separately. */
+ string is set, even if constant (as different transports can have different
+ constant settings), we must add it to the key that is used for retries,
+ because connections to the same host from a different interface should be
+ treated separately. */
- host_af = (Ustrchr(host->address, ':') == NULL)? AF_INET : AF_INET6;
- if (!smtp_get_interface(ob->interface, host_af, addrlist, &ifchanges,
- &interface, tid))
- return FALSE;
- if (ifchanges) pistring = string_sprintf("%s/%s", pistring, interface);
+ host_af = Ustrchr(host->address, ':') == NULL ? AF_INET : AF_INET6;
+ if ((rs = ob->interface) && *rs)
+ {
+ if (!smtp_get_interface(rs, host_af, addrlist, &interface, tid))
+ return FALSE;
+ pistring = string_sprintf("%s/%s", pistring, interface);
+ }
/* The first time round the outer loop, check the status of the host by
inspecting the retry data. The second time round, we are interested only
if (cutoff_retry == 0)
{
+ BOOL incl_ip;
/* Ensure the status of the address is set by checking retry data if
- necessary. There maybe host-specific retry data (applicable to all
+ necessary. There may be host-specific retry data (applicable to all
messages) and also data for retries of a specific message at this host.
If either of these retry records are actually read, the keys used are
returned to save recomputing them later. */
+ if (exp_bool(addrlist, US"transport", tblock->name, D_transport,
+ US"retry_include_ip_address", ob->retry_include_ip_address,
+ ob->expand_retry_include_ip_address, &incl_ip) != OK)
+ continue; /* with next host */
+
host_is_expired = retry_check_address(addrlist->domain, host, pistring,
- ob->retry_include_ip_address, &retry_host_key, &retry_message_key);
+ incl_ip, &retry_host_key, &retry_message_key);
DEBUG(D_transport) debug_printf("%s [%s]%s status = %s\n", host->name,
(host->address == NULL)? US"" : host->address, pistring,
switch (host->status)
{
case hstatus_unusable:
- expired = FALSE;
- setflag(addrlist, af_retry_skipped);
- /* Fall through */
+ expired = FALSE;
+ setflag(addrlist, af_retry_skipped);
+ /* Fall through */
case hstatus_unusable_expired:
- switch (host->why)
- {
- case hwhy_retry: hosts_retry++; break;
- case hwhy_failed: hosts_fail++; break;
- case hwhy_deferred: hosts_defer++; break;
- }
-
- /* If there was a retry message key, implying that previously there
- was a message-specific defer, we don't want to update the list of
- messages waiting for these hosts. */
-
- if (retry_message_key != NULL) update_waiting = FALSE;
- continue; /* With the next host or IP address */
+ switch (host->why)
+ {
+ case hwhy_retry: hosts_retry++; break;
+ case hwhy_failed: hosts_fail++; break;
+ case hwhy_deferred: hosts_defer++; break;
+ }
+
+ /* If there was a retry message key, implying that previously there
+ was a message-specific defer, we don't want to update the list of
+ messages waiting for these hosts. */
+
+ if (retry_message_key) update_waiting = FALSE;
+ continue; /* With the next host or IP address */
}
}
else
{
- if (host->address == NULL ||
- host->status != hstatus_unusable_expired ||
- host->last_try > received_time)
+ if ( !host->address
+ || host->status != hstatus_unusable_expired
+ || host->last_try > received_time)
continue;
- DEBUG(D_transport)
- debug_printf("trying expired host %s [%s]%s\n",
+ DEBUG(D_transport) debug_printf("trying expired host %s [%s]%s\n",
host->name, host->address, pistring);
host_is_expired = TRUE;
}
and remember this for later deletion. Do not do any of this if we are
sending the message down a pre-existing connection. */
- if (!continuing &&
- verify_check_this_host(&(ob->serialize_hosts), NULL, host->name,
- host->address, NULL) == OK)
+ if ( !continue_hostname
+ && verify_check_given_host(&ob->serialize_hosts, host) == OK)
{
serialize_key = string_sprintf("host-serialize-%s", host->name);
- if (!enq_start(serialize_key))
+ if (!enq_start(serialize_key, 1))
{
DEBUG(D_transport)
debug_printf("skipping host %s because another Exim process "
hosts_serial++;
continue;
}
- serialized = TRUE;
}
/* OK, we have an IP address that is not waiting for its retry time to
DEBUG(D_transport) debug_printf("delivering %s to %s [%s] (%s%s)\n",
message_id, host->name, host->address, addrlist->address,
- (addrlist->next == NULL)? "" : ", ...");
+ addrlist->next ? ", ..." : "");
set_process_info("delivering %s to %s [%s] (%s%s)",
message_id, host->name, host->address, addrlist->address,
- (addrlist->next == NULL)? "" : ", ...");
+ addrlist->next ? ", ..." : "");
/* This is not for real; don't do the delivery. If there are
any remaining hosts, list them. */
if (dont_deliver)
{
host_item *host2;
- set_errno(addrlist, 0, NULL, OK, FALSE);
- for (addr = addrlist; addr != NULL; addr = addr->next)
+ set_errno_nohost(addrlist, 0, NULL, OK, FALSE);
+ for (addr = addrlist; addr; addr = addr->next)
{
addr->host_used = host;
addr->special_action = '*';
{
debug_printf("*** delivery by %s transport bypassed by -N option\n"
"*** host and remaining hosts:\n", tblock->name);
- for (host2 = host; host2 != NULL; host2 = host2->next)
+ for (host2 = host; host2; host2 = host2->next)
debug_printf(" %s [%s]\n", host2->name,
- (host2->address == NULL)? US"unset" : host2->address);
+ host2->address ? host2->address : US"unset");
}
rc = OK;
}
else
{
+ host_item * thost;
+ /* Make a copy of the host if it is local to this invocation
+ of the transport. */
+
+ if (expanded_hosts)
+ {
+ thost = store_get(sizeof(host_item));
+ *thost = *host;
+ thost->name = string_copy(host->name);
+ thost->address = string_copy(host->address);
+ }
+ else
+ thost = host;
+
if (!host_is_expired && ++unexpired_hosts_tried >= ob->hosts_max_try)
{
host_item *h;
DEBUG(D_transport)
debug_printf("hosts_max_try limit reached with this host\n");
- for (h = host; h != NULL; h = h->next)
- if (h->mx != host->mx) break;
- if (h != NULL)
- {
- nexthost = h;
- unexpired_hosts_tried--;
- DEBUG(D_transport) debug_printf("however, a higher MX host exists "
- "and will be tried\n");
- }
+ for (h = host; h; h = h->next) if (h->mx != host->mx)
+ {
+ nexthost = h;
+ unexpired_hosts_tried--;
+ DEBUG(D_transport) debug_printf("however, a higher MX host exists "
+ "and will be tried\n");
+ break;
+ }
}
/* Attempt the delivery. */
total_hosts_tried++;
- rc = smtp_deliver(addrlist, host, host_af, port, interface, tblock,
- expanded_hosts != NULL, &message_defer, FALSE);
+ rc = smtp_deliver(addrlist, thost, host_af, port, interface, tblock,
+ &message_defer, FALSE);
/* Yield is one of:
OK => connection made, each address contains its result;
failures, where the log has already been written. If all hosts defer a
general message is written at the end. */
- if (rc == DEFER && first_addr->basic_errno != ERRNO_AUTHFAIL &&
- first_addr->basic_errno != ERRNO_TLSFAILURE)
+ if (rc == DEFER && first_addr->basic_errno != ERRNO_AUTHFAIL
+ && first_addr->basic_errno != ERRNO_TLSFAILURE)
write_logs(first_addr, host);
+#ifndef DISABLE_EVENT
+ if (rc == DEFER)
+ deferred_event_raise(first_addr, host);
+#endif
+
/* If STARTTLS was accepted, but there was a failure in setting up the
TLS session (usually a certificate screwup), and the host is not in
hosts_require_tls, and tls_tempfail_tryclear is true, try again, with
session, so the in-clear transmission after those errors, if permitted,
happens inside smtp_deliver().] */
- #ifdef SUPPORT_TLS
- if (rc == DEFER && first_addr->basic_errno == ERRNO_TLSFAILURE &&
- ob->tls_tempfail_tryclear &&
- verify_check_this_host(&(ob->hosts_require_tls), NULL, host->name,
- host->address, NULL) != OK)
+#ifdef SUPPORT_TLS
+ if ( rc == DEFER
+ && first_addr->basic_errno == ERRNO_TLSFAILURE
+ && ob->tls_tempfail_tryclear
+ && verify_check_given_host(&ob->hosts_require_tls, host) != OK
+ )
{
log_write(0, LOG_MAIN, "TLS session failure: delivering unencrypted "
"to %s [%s] (not in hosts_require_tls)", host->name, host->address);
first_addr = prepare_addresses(addrlist, host);
- rc = smtp_deliver(addrlist, host, host_af, port, interface, tblock,
- expanded_hosts != NULL, &message_defer, TRUE);
+ rc = smtp_deliver(addrlist, thost, host_af, port, interface, tblock,
+ &message_defer, TRUE);
if (rc == DEFER && first_addr->basic_errno != ERRNO_AUTHFAIL)
write_logs(first_addr, host);
+# ifndef DISABLE_EVENT
+ if (rc == DEFER)
+ deferred_event_raise(first_addr, host);
+# endif
}
- #endif
+#endif /*SUPPORT_TLS*/
}
/* Delivery attempt finished */
- rs = (rc == OK)? US"OK" : (rc == DEFER)? US"DEFER" : (rc == ERROR)?
- US"ERROR" : US"?";
+ rs = rc == OK ? US"OK"
+ : rc == DEFER ? US"DEFER"
+ : rc == ERROR ? US"ERROR"
+ : US"?";
set_process_info("delivering %s: just tried %s [%s] for %s%s: result %s",
message_id, host->name, host->address, addrlist->address,
- (addrlist->next == NULL)? "" : " (& others)", rs);
+ addrlist->next ? " (& others)" : "", rs);
/* Release serialization if set up */
- if (serialized) enq_end(serialize_key);
+ if (serialize_key) enq_end(serialize_key);
/* If the result is DEFER, or if a host retry record is known to exist, we
need to add an item to the retry chain for updating the retry database
the unusable tree at the outer level, so even if different address blocks
contain the same address, it still won't get tried again.) */
- if (rc == DEFER || retry_host_key != NULL)
+ if (rc == DEFER || retry_host_key)
{
- int delete_flag = (rc != DEFER)? rf_delete : 0;
- if (retry_host_key == NULL)
+ int delete_flag = rc != DEFER ? rf_delete : 0;
+ if (!retry_host_key)
{
- retry_host_key = ob->retry_include_ip_address?
- string_sprintf("T:%S:%s%s", host->name, host->address, pistring) :
- string_sprintf("T:%S%s", host->name, pistring);
+ BOOL incl_ip;
+ if (exp_bool(addrlist, US"transport", tblock->name, D_transport,
+ US"retry_include_ip_address", ob->retry_include_ip_address,
+ ob->expand_retry_include_ip_address, &incl_ip) != OK)
+ incl_ip = TRUE; /* error; use most-specific retry record */
+
+ retry_host_key = incl_ip
+ ? string_sprintf("T:%S:%s%s", host->name, host->address, pistring)
+ : string_sprintf("T:%S%s", host->name, pistring);
}
/* If a delivery of another message over an existing SMTP connection
host is genuinely down, another non-continued message delivery will
notice it soon enough. */
- if (delete_flag != 0 || !continuing)
+ if (delete_flag != 0 || !continue_hostname)
retry_add_item(first_addr, retry_host_key, rf_host | delete_flag);
/* We may have tried an expired host, if its retry time has come; ensure
if (rc == DEFER)
{
- host->status = (host_is_expired)?
- hstatus_unusable_expired : hstatus_unusable;
+ host->status = host_is_expired
+ ? hstatus_unusable_expired : hstatus_unusable;
host->why = hwhy_deferred;
}
}
reasonable. Also, stop the message from being remembered as waiting
for specific hosts. */
- if (message_defer || retry_message_key != NULL)
+ if (message_defer || retry_message_key)
{
- int delete_flag = message_defer? 0 : rf_delete;
- if (retry_message_key == NULL)
+ int delete_flag = message_defer ? 0 : rf_delete;
+ if (!retry_message_key)
{
- retry_message_key = ob->retry_include_ip_address?
- string_sprintf("T:%S:%s%s:%s", host->name, host->address, pistring,
- message_id) :
- string_sprintf("T:%S%s:%s", host->name, pistring, message_id);
+ BOOL incl_ip;
+ if (exp_bool(addrlist, US"transport", tblock->name, D_transport,
+ US"retry_include_ip_address", ob->retry_include_ip_address,
+ ob->expand_retry_include_ip_address, &incl_ip) != OK)
+ incl_ip = TRUE; /* error; use most-specific retry record */
+
+ retry_message_key = incl_ip
+ ? string_sprintf("T:%S:%s%s:%s", host->name, host->address, pistring,
+ message_id)
+ : string_sprintf("T:%S%s:%s", host->name, pistring, message_id);
}
retry_add_item(addrlist, retry_message_key,
rf_message | rf_host | delete_flag);
case, see if any of them are deferred. */
if (rc == OK)
- {
- for (addr = addrlist; addr != NULL; addr = addr->next)
- {
+ for (addr = addrlist; addr; addr = addr->next)
if (addr->transport_return == DEFER)
{
some_deferred = TRUE;
break;
}
- }
- }
/* If no addresses deferred or the result was ERROR, return. We do this for
ERROR because a failing filter set-up or add_headers expansion is likely to
case when we were trying to deliver down an existing channel and failed.
Don't try any other hosts in this case. */
- if (continuing) break;
+ if (continue_hostname) break;
/* If the whole delivery, or some individual addresses, were deferred and
there are more hosts that could be tried, do not count this host towards
important because if we don't try all hosts, the address will never time
out. NOTE: this does not apply to hosts_max_try_hardlimit. */
- if ((rc == DEFER || some_deferred) && nexthost != NULL)
+ if ((rc == DEFER || some_deferred) && nexthost)
{
BOOL timedout;
retry_config *retry = retry_find_config(host->name, NULL, 0, 0);
- if (retry != NULL && retry->rules != NULL)
+ if (retry && retry->rules)
{
retry_rule *last_rule;
for (last_rule = retry->rules;
- last_rule->next != NULL;
+ last_rule->next;
last_rule = last_rule->next);
timedout = time(NULL) - received_time > last_rule->timeout;
}
if (mua_wrapper)
{
- for (addr = addrlist; addr != NULL; addr = addr->next)
+ for (addr = addrlist; addr; addr = addr->next)
addr->transport_return = FAIL;
goto END_TRANSPORT;
}
down an existing TCP/IP connection, and something caused the host not to be
found, we end up here, but can detect these cases and handle them specially. */
-for (addr = addrlist; addr != NULL; addr = addr->next)
+for (addr = addrlist; addr; addr = addr->next)
{
/* If host is not NULL, it means that we stopped processing the host list
because of hosts_max_try or hosts_max_try_hardlimit. In the former case, this
However, if we have hit hosts_max_try_hardlimit, we want to behave as if all
hosts were tried. */
- if (host != NULL)
- {
+ if (host)
if (total_hosts_tried >= ob->hosts_max_try_hardlimit)
{
DEBUG(D_transport)
debug_printf("hosts_max_try limit caused some hosts to be skipped\n");
setflag(addr, af_retry_skipped);
}
- }
if (queue_smtp) /* no deliveries attempted */
{
addr->message = US"SMTP delivery explicitly queued";
}
- else if (addr->transport_return == DEFER &&
- (addr->basic_errno == ERRNO_UNKNOWNERROR || addr->basic_errno == 0) &&
- addr->message == NULL)
+ else if ( addr->transport_return == DEFER
+ && (addr->basic_errno == ERRNO_UNKNOWNERROR || addr->basic_errno == 0)
+ && !addr->message
+ )
{
addr->basic_errno = ERRNO_HRETRY;
- if (continue_hostname != NULL)
- {
+ if (continue_hostname)
addr->message = US"no host found for existing SMTP connection";
- }
else if (expired)
{
setflag(addr, af_pass_message); /* This is not a security risk */
- addr->message = (ob->delay_after_cutoff)?
- US"retry time not reached for any host after a long failure period" :
- US"all hosts have been failing for a long time and were last tried "
- "after this message arrived";
+ addr->message = string_sprintf(
+ "all hosts%s have been failing for a long time %s",
+ addr->domain ? string_sprintf(" for '%s'", addr->domain) : US"",
+ ob->delay_after_cutoff
+ ? US"(and retry time not reached)"
+ : US"and were last tried after this message arrived");
/* If we are already using fallback hosts, or there are no fallback hosts
defined, convert the result to FAIL to cause a bounce. */
- if (addr->host_list == addr->fallback_hosts ||
- addr->fallback_hosts == NULL)
+ if (addr->host_list == addr->fallback_hosts || !addr->fallback_hosts)
addr->transport_return = FAIL;
}
else
{
+ const char * s;
if (hosts_retry == hosts_total)
- addr->message = US"retry time not reached for any host";
+ s = "retry time not reached for any host%s";
else if (hosts_fail == hosts_total)
- addr->message = US"all host address lookups failed permanently";
+ s = "all host address lookups%s failed permanently";
else if (hosts_defer == hosts_total)
- addr->message = US"all host address lookups failed temporarily";
+ s = "all host address lookups%s failed temporarily";
else if (hosts_serial == hosts_total)
- addr->message = US"connection limit reached for all hosts";
+ s = "connection limit reached for all hosts%s";
else if (hosts_fail+hosts_defer == hosts_total)
- addr->message = US"all host address lookups failed";
- else addr->message = US"some host address lookups failed and retry time "
- "not reached for other hosts or connection limit reached";
+ s = "all host address lookups%s failed";
+ else
+ s = "some host address lookups failed and retry time "
+ "not reached for other hosts or connection limit reached%s";
+
+ addr->message = string_sprintf(s,
+ addr->domain ? string_sprintf(" for '%s'", addr->domain) : US"");
}
}
}
/* Update the database which keeps information about which messages are waiting
for which hosts to become available. For some message-specific errors, the
update_waiting flag is turned off because we don't want follow-on deliveries in
-those cases. */
+those cases. If this transport instance is explicitly limited to one message
+per connection then follow-on deliveries are not possible and there's no need
+to create/update the per-transport wait-<transport_name> database. */
-if (update_waiting) transport_update_waiting(hostlist, tblock->name);
+if (update_waiting && tblock->connection_max_messages != 1)
+ transport_update_waiting(hostlist, tblock->name);
END_TRANSPORT:
return TRUE; /* Each address has its status */
}
+/* vi: aw ai sw=2
+*/
/* End of transport/smtp.c */
git://git.exim.org / users / jgh / exim.git / blobdiff