-/* $Cambridge: exim/src/src/exim.c,v 1.47 2006/11/07 10:28:09 ph10 Exp $ */
+/* $Cambridge: exim/src/src/exim.c,v 1.65 2009/11/16 19:50:36 nm4 Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2006 */
+/* Copyright (c) University of Cambridge 1995 - 2009 */
/* See the file NOTICE for conditions of use and distribution. */
#ifdef WITH_CONTENT_SCAN
fprintf(f, " Content_Scanning");
#endif
+#ifndef DISABLE_DKIM
+ fprintf(f, " DKIM");
+#endif
#ifdef WITH_OLD_DEMIME
fprintf(f, " Old_Demime");
#endif
#ifdef EXPERIMENTAL_BRIGHTMAIL
fprintf(f, " Experimental_Brightmail");
#endif
-#ifdef EXPERIMENTAL_DOMAINKEYS
- fprintf(f, " Experimental_DomainKeys");
+#ifdef EXPERIMENTAL_DCC
+ fprintf(f, " Experimental_DCC");
#endif
fprintf(f, "\n");
}
fprintf(f, "Size of off_t: %d\n", sizeof(off_t));
+
+/* This runtime check is to help diagnose library linkage mismatches which
+result in segfaults and the like; as such, it's left until the end,
+just in case. There will still be a "Configuration file is" line still to
+come. */
+#ifdef SUPPORT_TLS
+tls_version_report(f);
+#endif
}
+/*************************************************
+* Output usage information for the program *
+*************************************************/
+
+/* This function is called when there are no recipients
+ or a specific --help argument was added.
+
+Arguments:
+ progname information on what name we were called by
+
+Returns: DOES NOT RETURN
+*/
+
+static void
+exim_usage(uschar *progname)
+{
+
+/* Handle specific program invocation varients */
+if (Ustrcmp(progname, US"-mailq") == 0)
+ {
+ fprintf(stderr,
+ "mailq - list the contents of the mail queue\n\n"
+ "For a list of options, see the Exim documentation.\n");
+ exit(EXIT_FAILURE);
+ }
+
+/* Generic usage - we output this whatever happens */
+fprintf(stderr,
+ "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n"
+ "not directly from a shell command line. Options and/or arguments control\n"
+ "what it does when called. For a list of options, see the Exim documentation.\n");
+
+exit(EXIT_FAILURE);
+}
+
+
+
/*************************************************
* Entry point and high-level code *
*************************************************/
BOOL queue_only_set = FALSE;
BOOL receiving_message = TRUE;
BOOL sender_ident_set = FALSE;
+BOOL session_local_queue_only;
BOOL unprivileged;
BOOL removed_privilege = FALSE;
+BOOL usage_wanted = FALSE;
BOOL verify_address_mode = FALSE;
BOOL verify_as_sender = FALSE;
BOOL version_printed = FALSE;
regex_must_compile(US"^(?:[^\\W_]{6}-){2}[^\\W_]{2}$", FALSE, TRUE);
/* Precompile the regular expression that is used for matching an SMTP error
-code, possibly extended, at the start of an error message. */
+code, possibly extended, at the start of an error message. Note that the
+terminating whitespace character is included. */
regex_smtp_code =
regex_must_compile(US"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?",
unprivileged = (real_uid != root_uid && original_euid != root_uid);
-/* If the first argument is --help, pretend there are no arguments. This will
-cause a brief message to be given. */
+/* If the first argument is --help, set usage_wanted and pretend there
+are no arguments. This will cause a brief message to be given. We do
+the message generation downstream so we can pick up how we were invoked */
-if (argc > 1 && Ustrcmp(argv[1], "--help") == 0) argc = 1;
+if (argc > 1 && Ustrcmp(argv[1], "--help") == 0)
+ {
+ argc = 1;
+ usage_wanted = TRUE;
+ }
/* Scan the program's arguments. Some can be dealt with right away; others are
simply recorded for checking and handling afterwards. Do a high-level switch
if (Ustrcmp(argrest, "C") == 0)
{
+ union sockaddr_46 interface_sock;
+ EXIM_SOCKLEN_T size = sizeof(interface_sock);
+
if (argc != i + 6)
{
fprintf(stderr, "exim: too many or too few arguments after -MC\n");
return EXIT_FAILURE;
}
+ /* Set up $sending_ip_address and $sending_port */
+
+ if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock),
+ &size) == 0)
+ sending_ip_address = host_ntoa(-1, &interface_sock, NULL,
+ &sending_port);
+ else
+ {
+ fprintf(stderr, "exim: getsockname() failed after -MC option: %s\n",
+ strerror(errno));
+ return EXIT_FAILURE;
+ }
+
if (running_in_test_harness) millisleep(500);
break;
}
-Mes edit sender
-Mset load a message for use with -be
-Mvb show body
+ -Mvc show copy (of whole message, in RFC 2822 format)
-Mvh show header
-Mvl show log
*/
msg_action = MSG_SHOW_BODY;
one_msg_action = TRUE;
}
+ else if (Ustrcmp(argrest, "vc") == 0)
+ {
+ msg_action = MSG_SHOW_COPY;
+ one_msg_action = TRUE;
+ }
else if (Ustrcmp(argrest, "vh") == 0)
{
msg_action = MSG_SHOW_HEADER;
case 'q':
receiving_message = FALSE;
+ if (queue_interval >= 0)
+ {
+ fprintf(stderr, "exim: -q specified more than once\n");
+ exit(EXIT_FAILURE);
+ }
/* -qq...: Do queue runs in a 2-stage manner */
}
}
else deliver_selectstring = argrest;
- if (queue_interval < 0) queue_interval = 0;
break;
}
}
else deliver_selectstring_sender = argrest;
- if (queue_interval < 0) queue_interval = 0;
break;
/* -Tqt is an option that is exclusively for use by the testing suite.
}
-/* Arguments have been processed. Check for incompatibilities. */
+/* If -R or -S have been specified without -q, assume a single queue run. */
+
+if ((deliver_selectstring != NULL || deliver_selectstring_sender != NULL) &&
+ queue_interval < 0) queue_interval = 0;
+
END_ARG:
+/* If usage_wanted is set we call the usage function - which never returns */
+if (usage_wanted) exim_usage(called_as);
+
+/* Arguments have been processed. Check for incompatibilities. */
if ((
(smtp_input || extract_recipients || recipients_arg < argc) &&
(daemon_listen || queue_interval >= 0 || bi_option ||
else
{
int i, j;
-
for (i = 0; i < group_count; i++)
{
if (group_list[i] == exim_gid) admin_user = TRUE;
(is_inetd && smtp_load_reserve >= 0)
))
{
- load_average = os_getloadavg();
+ load_average = OS_GETLOADAVG();
}
#endif
if (i < argc - 1 &&
(Ustrcmp(argv[i], "router") == 0 ||
Ustrcmp(argv[i], "transport") == 0 ||
- Ustrcmp(argv[i], "authenticator") == 0))
+ Ustrcmp(argv[i], "authenticator") == 0 ||
+ Ustrcmp(argv[i], "macro") == 0))
{
readconf_print(argv[i+1], argv[i]);
i++;
message_linecount += body_linecount;
(void)dup2(save_stdin, 0);
(void)close(save_stdin);
+ clearerr(stdin); /* Required by Darwin */
}
/* Allow $recipients for this testing */
log_write_selector &= ~L_smtp_connection;
log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info());
+ /* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails,
+ because a log line has already been written for all its failure exists
+ (usually "connection refused: <reason>") and writing another one is
+ unnecessary clutter. */
+
if (smtp_start_session())
{
reset_point = store_get(0);
if (smtp_setup_msg() <= 0) break;
if (!receive_msg(FALSE)) break;
}
+ smtp_log_no_mail();
}
exim_exit(EXIT_SUCCESS);
}
printf("Configuration file is %s\n", config_main_filename);
return EXIT_SUCCESS;
}
+
if (filter_test == FTEST_NONE)
- {
- fprintf(stderr,
-"Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n"
-"not directly from a shell command line. Options and/or arguments control\n"
-"what it does when called. For a list of options, see the Exim documentation.\n");
- return EXIT_FAILURE;
- }
+ exim_usage(called_as);
}
if (fstat(1, &statbuf) < 0) (void)dup2(0, 1);
-/* Set up the incoming protocol name and the state of the program. Root
-is allowed to force received protocol via the -oMr option above, and if we are
-in a non-local SMTP state it means we have come via inetd and the process info
-has already been set up. We don't set received_protocol here for smtp input,
-as it varies according to batch/HELO/EHLO/AUTH/TLS. */
+/* Set up the incoming protocol name and the state of the program. Root is
+allowed to force received protocol via the -oMr option above. If we have come
+via inetd, the process info has already been set up. We don't set
+received_protocol here for smtp input, as it varies according to
+batch/HELO/EHLO/AUTH/TLS. */
if (smtp_input)
{
- if (sender_local) set_process_info("accepting a local SMTP message from <%s>",
- sender_address);
+ if (!is_inetd) set_process_info("accepting a local %sSMTP message from <%s>",
+ smtp_batched_input? "batched " : "",
+ (sender_address!= NULL)? sender_address : originator_login);
}
else
{
sender_address);
}
-/* Initialize the local_queue-only flag (this will be ignored if mua_wrapper is
-set) */
+/* Initialize the session_local_queue-only flag (this will be ignored if
+mua_wrapper is set) */
queue_check_only();
-local_queue_only = queue_only;
+session_local_queue_only = queue_only;
/* For non-SMTP and for batched SMTP input, check that there is enough space on
the spool if so configured. On failure, we must not attempt to send an error
return EXIT_FAILURE;
}
-/* If this is smtp input of any kind, handle the start of the SMTP
-session. */
+/* If this is smtp input of any kind, real or batched, handle the start of the
+SMTP session.
+
+NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails,
+because a log line has already been written for all its failure exists
+(usually "connection refused: <reason>") and writing another one is
+unnecessary clutter. */
if (smtp_input)
{
store_reset(reset_point);
message_id[0] = 0;
- /* In the SMTP case, we have to handle the initial SMTP input and build the
- recipients list, before calling receive_msg() to read the message proper.
- Whatever sender address is actually given in the SMTP transaction is
- actually ignored for local senders - we use the actual sender, which is
- normally either the underlying user running this process or a -f argument
- provided by a trusted caller. It is saved in real_sender_address.
-
- However, if this value is NULL, we are dealing with a trusted caller when
- -f was not used; in this case, the SMTP sender is allowed to stand.
-
- Also, if untrusted_set_sender is set, we permit sender addresses that match
- anything in its list.
-
- The variable raw_sender_address holds the sender address before rewriting. */
+ /* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP
+ input and build the recipients list, before calling receive_msg() to read the
+ message proper. Whatever sender address is given in the SMTP transaction is
+ often ignored for local senders - we use the actual sender, which is normally
+ either the underlying user running this process or a -f argument provided by
+ a trusted caller. It is saved in real_sender_address. The test for whether to
+ accept the SMTP sender is encapsulated in receive_check_set_sender(). */
if (smtp_input)
{
sender_address = raw_sender = real_sender_address;
sender_address_unrewritten = NULL;
}
+
+ /* For batched SMTP, we have to run the acl_not_smtp_start ACL, since it
+ isn't really SMTP, so no other ACL will run until the acl_not_smtp one at
+ the very end. The result of the ACL is ignored (as for other non-SMTP
+ messages). It is run for its potential side effects. */
+
+ if (smtp_batched_input && acl_not_smtp_start != NULL)
+ {
+ uschar *user_msg, *log_msg;
+ enable_dollar_recipients = TRUE;
+ (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start,
+ &user_msg, &log_msg);
+ enable_dollar_recipients = FALSE;
+ }
+
+ /* Now get the data for the message */
+
more = receive_msg(extract_recipients);
if (message_id[0] == 0)
{
if (more) continue;
+ smtp_log_no_mail(); /* Log no mail if configured */
exim_exit(EXIT_FAILURE);
}
}
- else exim_exit((rc == 0)? EXIT_SUCCESS : EXIT_FAILURE);
+ else
+ {
+ smtp_log_no_mail(); /* Log no mail if configured */
+ exim_exit((rc == 0)? EXIT_SUCCESS : EXIT_FAILURE);
+ }
}
/* In the non-SMTP case, we have all the information from the command
}
/* Else act on the result of message reception. We should not get here unless
- message_id[0] is non-zero. If queue_only is set, local_queue_only will be
- TRUE. If it is not, check on the number of messages received in this
- connection. If that's OK and queue_only_load is set, check that the load
- average is below it. If it is not, set local_queue_only TRUE. Note that it
- then remains this way for any subsequent messages on the same SMTP connection.
- This is a deliberate choice; even though the load average may fall, it
- doesn't seem right to deliver later messages on the same call when not
- delivering earlier ones. */
-
- if (!local_queue_only)
+ message_id[0] is non-zero. If queue_only is set, session_local_queue_only
+ will be TRUE. If it is not, check on the number of messages received in this
+ connection. */
+
+ if (!session_local_queue_only &&
+ smtp_accept_queue_per_connection > 0 &&
+ receive_messagecount > smtp_accept_queue_per_connection)
{
- if (smtp_accept_queue_per_connection > 0 &&
- receive_messagecount > smtp_accept_queue_per_connection)
- {
- local_queue_only = TRUE;
- queue_only_reason = 2;
- }
- else if (queue_only_load >= 0)
+ session_local_queue_only = TRUE;
+ queue_only_reason = 2;
+ }
+
+ /* Initialize local_queue_only from session_local_queue_only. If it is false,
+ and queue_only_load is set, check that the load average is below it. If it is
+ not, set local_queue_only TRUE. If queue_only_load_latch is true (the
+ default), we put the whole session into queue_only mode. It then remains this
+ way for any subsequent messages on the same SMTP connection. This is a
+ deliberate choice; even though the load average may fall, it doesn't seem
+ right to deliver later messages on the same call when not delivering earlier
+ ones. However, there are odd cases where this is not wanted, so this can be
+ changed by setting queue_only_load_latch false. */
+
+ local_queue_only = session_local_queue_only;
+ if (!local_queue_only && queue_only_load >= 0)
+ {
+ local_queue_only = (load_average = OS_GETLOADAVG()) > queue_only_load;
+ if (local_queue_only)
{
- local_queue_only = (load_average = os_getloadavg()) > queue_only_load;
- if (local_queue_only) queue_only_reason = 3;
+ queue_only_reason = 3;
+ if (queue_only_load_latch) session_local_queue_only = TRUE;
}
}
git://git.exim.org / users / jgh / exim.git / blobdiff