1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2017 */
6 /* See the file NOTICE for conditions of use and distribution. */
9 /* The main function: entry point, initialization, and high-level control.
10 Also a few functions that don't naturally fit elsewhere. */
15 #if defined(__GLIBC__) && !defined(__UCLIBC__)
16 # include <gnu/libc-version.h>
20 # include <gnutls/gnutls.h>
21 # if GNUTLS_VERSION_NUMBER < 0x030103 && !defined(DISABLE_OCSP)
26 extern void init_lookup_list(void);
30 /*************************************************
31 * Function interface to store functions *
32 *************************************************/
34 /* We need some real functions to pass to the PCRE regular expression library
35 for store allocation via Exim's store manager. The normal calls are actually
36 macros that pass over location information to make tracing easier. These
37 functions just interface to the standard macro calls. A good compiler will
38 optimize out the tail recursion and so not make them too expensive. There
39 are two sets of functions; one for use when we want to retain the compiled
40 regular expression for a long time; the other for short-term use. */
43 function_store_get(size_t size
)
45 return store_get((int)size
);
49 function_dummy_free(void *block
) { block
= block
; }
52 function_store_malloc(size_t size
)
54 return store_malloc((int)size
);
58 function_store_free(void *block
)
66 /*************************************************
67 * Enums for cmdline interface *
68 *************************************************/
70 enum commandline_info
{ CMDINFO_NONE
=0,
71 CMDINFO_HELP
, CMDINFO_SIEVE
, CMDINFO_DSCP
};
76 /*************************************************
77 * Compile regular expression and panic on fail *
78 *************************************************/
80 /* This function is called when failure to compile a regular expression leads
81 to a panic exit. In other cases, pcre_compile() is called directly. In many
82 cases where this function is used, the results of the compilation are to be
83 placed in long-lived store, so we temporarily reset the store management
84 functions that PCRE uses if the use_malloc flag is set.
87 pattern the pattern to compile
88 caseless TRUE if caseless matching is required
89 use_malloc TRUE if compile into malloc store
91 Returns: pointer to the compiled pattern
95 regex_must_compile(const uschar
*pattern
, BOOL caseless
, BOOL use_malloc
)
98 int options
= PCRE_COPT
;
103 pcre_malloc
= function_store_malloc
;
104 pcre_free
= function_store_free
;
106 if (caseless
) options
|= PCRE_CASELESS
;
107 yield
= pcre_compile(CCS pattern
, options
, (const char **)&error
, &offset
, NULL
);
108 pcre_malloc
= function_store_get
;
109 pcre_free
= function_dummy_free
;
111 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "regular expression error: "
112 "%s at offset %d while compiling %s", error
, offset
, pattern
);
119 /*************************************************
120 * Execute regular expression and set strings *
121 *************************************************/
123 /* This function runs a regular expression match, and sets up the pointers to
124 the matched substrings.
127 re the compiled expression
128 subject the subject string
129 options additional PCRE options
130 setup if < 0 do full setup
131 if >= 0 setup from setup+1 onwards,
132 excluding the full matched string
134 Returns: TRUE or FALSE
138 regex_match_and_setup(const pcre
*re
, const uschar
*subject
, int options
, int setup
)
140 int ovector
[3*(EXPAND_MAXN
+1)];
141 uschar
* s
= string_copy(subject
); /* de-constifying */
142 int n
= pcre_exec(re
, NULL
, CS s
, Ustrlen(s
), 0,
143 PCRE_EOPT
| options
, ovector
, sizeof(ovector
)/sizeof(int));
145 if (n
== 0) n
= EXPAND_MAXN
+ 1;
149 expand_nmax
= (setup
< 0)? 0 : setup
+ 1;
150 for (nn
= (setup
< 0)? 0 : 2; nn
< n
*2; nn
+= 2)
152 expand_nstring
[expand_nmax
] = s
+ ovector
[nn
];
153 expand_nlength
[expand_nmax
++] = ovector
[nn
+1] - ovector
[nn
];
163 /*************************************************
164 * Set up processing details *
165 *************************************************/
167 /* Save a text string for dumping when SIGUSR1 is received.
168 Do checks for overruns.
170 Arguments: format and arguments, as for printf()
175 set_process_info(const char *format
, ...)
177 int len
= sprintf(CS process_info
, "%5d ", (int)getpid());
179 va_start(ap
, format
);
180 if (!string_vformat(process_info
+ len
, PROCESS_INFO_SIZE
- len
- 2, format
, ap
))
181 Ustrcpy(process_info
+ len
, "**** string overflowed buffer ****");
182 len
= Ustrlen(process_info
);
183 process_info
[len
+0] = '\n';
184 process_info
[len
+1] = '\0';
185 process_info_len
= len
+ 1;
186 DEBUG(D_process_info
) debug_printf("set_process_info: %s", process_info
);
193 /*************************************************
194 * Handler for SIGUSR1 *
195 *************************************************/
197 /* SIGUSR1 causes any exim process to write to the process log details of
198 what it is currently doing. It will only be used if the OS is capable of
199 setting up a handler that causes automatic restarting of any system call
200 that is in progress at the time.
202 This function takes care to be signal-safe.
204 Argument: the signal number (SIGUSR1)
209 usr1_handler(int sig
)
213 os_restarting_signal(sig
, usr1_handler
);
215 if ((fd
= Uopen(process_log_path
, O_APPEND
|O_WRONLY
, LOG_MODE
)) < 0)
217 /* If we are already running as the Exim user, try to create it in the
218 current process (assuming spool_directory exists). Otherwise, if we are
219 root, do the creation in an exim:exim subprocess. */
221 int euid
= geteuid();
222 if (euid
== exim_uid
)
223 fd
= Uopen(process_log_path
, O_CREAT
|O_APPEND
|O_WRONLY
, LOG_MODE
);
224 else if (euid
== root_uid
)
225 fd
= log_create_as_exim(process_log_path
);
228 /* If we are neither exim nor root, or if we failed to create the log file,
229 give up. There is not much useful we can do with errors, since we don't want
230 to disrupt whatever is going on outside the signal handler. */
234 (void)write(fd
, process_info
, process_info_len
);
240 /*************************************************
242 *************************************************/
244 /* This handler is enabled most of the time that Exim is running. The handler
245 doesn't actually get used unless alarm() has been called to set a timer, to
246 place a time limit on a system call of some kind. When the handler is run, it
249 There are some other SIGALRM handlers that are used in special cases when more
250 than just a flag setting is required; for example, when reading a message's
251 input. These are normally set up in the code module that uses them, and the
252 SIGALRM handler is reset to this one afterwards.
254 Argument: the signal value (SIGALRM)
259 sigalrm_handler(int sig
)
261 sig
= sig
; /* Keep picky compilers happy */
263 os_non_restarting_signal(SIGALRM
, sigalrm_handler
);
268 /*************************************************
269 * Sleep for a fractional time interval *
270 *************************************************/
272 /* This function is called by millisleep() and exim_wait_tick() to wait for a
273 period of time that may include a fraction of a second. The coding is somewhat
274 tedious. We do not expect setitimer() ever to fail, but if it does, the process
275 will wait for ever, so we panic in this instance. (There was a case of this
276 when a bug in a function that calls milliwait() caused it to pass invalid data.
277 That's when I added the check. :-)
279 We assume it to be not worth sleeping for under 100us; this value will
280 require revisiting as hardware advances. This avoids the issue of
281 a zero-valued timer setting meaning "never fire".
283 Argument: an itimerval structure containing the interval
288 milliwait(struct itimerval
*itval
)
291 sigset_t old_sigmask
;
293 if (itval
->it_value
.tv_usec
< 100 && itval
->it_value
.tv_sec
== 0)
295 (void)sigemptyset(&sigmask
); /* Empty mask */
296 (void)sigaddset(&sigmask
, SIGALRM
); /* Add SIGALRM */
297 (void)sigprocmask(SIG_BLOCK
, &sigmask
, &old_sigmask
); /* Block SIGALRM */
298 if (setitimer(ITIMER_REAL
, itval
, NULL
) < 0) /* Start timer */
299 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
300 "setitimer() failed: %s", strerror(errno
));
301 (void)sigfillset(&sigmask
); /* All signals */
302 (void)sigdelset(&sigmask
, SIGALRM
); /* Remove SIGALRM */
303 (void)sigsuspend(&sigmask
); /* Until SIGALRM */
304 (void)sigprocmask(SIG_SETMASK
, &old_sigmask
, NULL
); /* Restore mask */
310 /*************************************************
311 * Millisecond sleep function *
312 *************************************************/
314 /* The basic sleep() function has a granularity of 1 second, which is too rough
315 in some cases - for example, when using an increasing delay to slow down
318 Argument: number of millseconds
325 struct itimerval itval
;
326 itval
.it_interval
.tv_sec
= 0;
327 itval
.it_interval
.tv_usec
= 0;
328 itval
.it_value
.tv_sec
= msec
/1000;
329 itval
.it_value
.tv_usec
= (msec
% 1000) * 1000;
335 /*************************************************
336 * Compare microsecond times *
337 *************************************************/
344 Returns: -1, 0, or +1
348 exim_tvcmp(struct timeval
*t1
, struct timeval
*t2
)
350 if (t1
->tv_sec
> t2
->tv_sec
) return +1;
351 if (t1
->tv_sec
< t2
->tv_sec
) return -1;
352 if (t1
->tv_usec
> t2
->tv_usec
) return +1;
353 if (t1
->tv_usec
< t2
->tv_usec
) return -1;
360 /*************************************************
361 * Clock tick wait function *
362 *************************************************/
364 /* Exim uses a time + a pid to generate a unique identifier in two places: its
365 message IDs, and in file names for maildir deliveries. Because some OS now
366 re-use pids within the same second, sub-second times are now being used.
367 However, for absolute certainty, we must ensure the clock has ticked before
368 allowing the relevant process to complete. At the time of implementation of
369 this code (February 2003), the speed of processors is such that the clock will
370 invariably have ticked already by the time a process has done its job. This
371 function prepares for the time when things are faster - and it also copes with
372 clocks that go backwards.
375 then_tv A timeval which was used to create uniqueness; its usec field
376 has been rounded down to the value of the resolution.
377 We want to be sure the current time is greater than this.
378 resolution The resolution that was used to divide the microseconds
379 (1 for maildir, larger for message ids)
385 exim_wait_tick(struct timeval
*then_tv
, int resolution
)
387 struct timeval now_tv
;
388 long int now_true_usec
;
390 (void)gettimeofday(&now_tv
, NULL
);
391 now_true_usec
= now_tv
.tv_usec
;
392 now_tv
.tv_usec
= (now_true_usec
/resolution
) * resolution
;
394 if (exim_tvcmp(&now_tv
, then_tv
) <= 0)
396 struct itimerval itval
;
397 itval
.it_interval
.tv_sec
= 0;
398 itval
.it_interval
.tv_usec
= 0;
399 itval
.it_value
.tv_sec
= then_tv
->tv_sec
- now_tv
.tv_sec
;
400 itval
.it_value
.tv_usec
= then_tv
->tv_usec
+ resolution
- now_true_usec
;
402 /* We know that, overall, "now" is less than or equal to "then". Therefore, a
403 negative value for the microseconds is possible only in the case when "now"
404 is more than a second less than "then". That means that itval.it_value.tv_sec
405 is greater than zero. The following correction is therefore safe. */
407 if (itval
.it_value
.tv_usec
< 0)
409 itval
.it_value
.tv_usec
+= 1000000;
410 itval
.it_value
.tv_sec
-= 1;
413 DEBUG(D_transport
|D_receive
)
415 if (!running_in_test_harness
)
417 debug_printf("tick check: " TIME_T_FMT
".%06lu " TIME_T_FMT
".%06lu\n",
418 then_tv
->tv_sec
, (long) then_tv
->tv_usec
,
419 now_tv
.tv_sec
, (long) now_tv
.tv_usec
);
420 debug_printf("waiting " TIME_T_FMT
".%06lu\n",
421 itval
.it_value
.tv_sec
, (long) itval
.it_value
.tv_usec
);
432 /*************************************************
433 * Call fopen() with umask 777 and adjust mode *
434 *************************************************/
436 /* Exim runs with umask(0) so that files created with open() have the mode that
437 is specified in the open() call. However, there are some files, typically in
438 the spool directory, that are created with fopen(). They end up world-writeable
439 if no precautions are taken. Although the spool directory is not accessible to
440 the world, this is an untidiness. So this is a wrapper function for fopen()
441 that sorts out the mode of the created file.
444 filename the file name
445 options the fopen() options
446 mode the required mode
448 Returns: the fopened FILE or NULL
452 modefopen(const uschar
*filename
, const char *options
, mode_t mode
)
454 mode_t saved_umask
= umask(0777);
455 FILE *f
= Ufopen(filename
, options
);
456 (void)umask(saved_umask
);
457 if (f
!= NULL
) (void)fchmod(fileno(f
), mode
);
464 /*************************************************
465 * Ensure stdin, stdout, and stderr exist *
466 *************************************************/
468 /* Some operating systems grumble if an exec() happens without a standard
469 input, output, and error (fds 0, 1, 2) being defined. The worry is that some
470 file will be opened and will use these fd values, and then some other bit of
471 code will assume, for example, that it can write error messages to stderr.
472 This function ensures that fds 0, 1, and 2 are open if they do not already
473 exist, by connecting them to /dev/null.
475 This function is also used to ensure that std{in,out,err} exist at all times,
476 so that if any library that Exim calls tries to use them, it doesn't crash.
488 for (i
= 0; i
<= 2; i
++)
490 if (fstat(i
, &statbuf
) < 0 && errno
== EBADF
)
492 if (devnull
< 0) devnull
= open("/dev/null", O_RDWR
);
493 if (devnull
< 0) log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "%s",
494 string_open_failed(errno
, "/dev/null"));
495 if (devnull
!= i
) (void)dup2(devnull
, i
);
498 if (devnull
> 2) (void)close(devnull
);
504 /*************************************************
505 * Close unwanted file descriptors for delivery *
506 *************************************************/
508 /* This function is called from a new process that has been forked to deliver
509 an incoming message, either directly, or using exec.
511 We want any smtp input streams to be closed in this new process. However, it
512 has been observed that using fclose() here causes trouble. When reading in -bS
513 input, duplicate copies of messages have been seen. The files will be sharing a
514 file pointer with the parent process, and it seems that fclose() (at least on
515 some systems - I saw this on Solaris 2.5.1) messes with that file pointer, at
516 least sometimes. Hence we go for closing the underlying file descriptors.
518 If TLS is active, we want to shut down the TLS library, but without molesting
519 the parent's SSL connection.
521 For delivery of a non-SMTP message, we want to close stdin and stdout (and
522 stderr unless debugging) because the calling process might have set them up as
523 pipes and be waiting for them to close before it waits for the submission
524 process to terminate. If they aren't closed, they hold up the calling process
525 until the initial delivery process finishes, which is not what we want.
527 Exception: We do want it for synchronous delivery!
529 And notwithstanding all the above, if D_resolver is set, implying resolver
530 debugging, leave stdout open, because that's where the resolver writes its
533 When we close stderr (which implies we've also closed stdout), we also get rid
534 of any controlling terminal.
546 tls_close(TRUE
, FALSE
); /* Shut down the TLS library */
548 (void)close(fileno(smtp_in
));
549 (void)close(fileno(smtp_out
));
554 (void)close(0); /* stdin */
555 if ((debug_selector
& D_resolver
) == 0) (void)close(1); /* stdout */
556 if (debug_selector
== 0) /* stderr */
558 if (!synchronous_delivery
)
571 /*************************************************
573 *************************************************/
575 /* This function sets a new uid and gid permanently, optionally calling
576 initgroups() to set auxiliary groups. There are some special cases when running
577 Exim in unprivileged modes. In these situations the effective uid will not be
578 root; if we already have the right effective uid/gid, and don't need to
579 initialize any groups, leave things as they are.
584 igflag TRUE if initgroups() wanted
585 msg text to use in debugging output and failure log
587 Returns: nothing; bombs out on failure
591 exim_setugid(uid_t uid
, gid_t gid
, BOOL igflag
, uschar
*msg
)
593 uid_t euid
= geteuid();
594 gid_t egid
= getegid();
596 if (euid
== root_uid
|| euid
!= uid
|| egid
!= gid
|| igflag
)
598 /* At least one OS returns +1 for initgroups failure, so just check for
603 struct passwd
*pw
= getpwuid(uid
);
606 if (initgroups(pw
->pw_name
, gid
) != 0)
607 log_write(0,LOG_MAIN
|LOG_PANIC_DIE
,"initgroups failed for uid=%ld: %s",
608 (long int)uid
, strerror(errno
));
610 else log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "cannot run initgroups(): "
611 "no passwd entry for uid=%ld", (long int)uid
);
614 if (setgid(gid
) < 0 || setuid(uid
) < 0)
616 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "unable to set gid=%ld or uid=%ld "
617 "(euid=%ld): %s", (long int)gid
, (long int)uid
, (long int)euid
, msg
);
621 /* Debugging output included uid/gid and all groups */
625 int group_count
, save_errno
;
626 gid_t group_list
[NGROUPS_MAX
];
627 debug_printf("changed uid/gid: %s\n uid=%ld gid=%ld pid=%ld\n", msg
,
628 (long int)geteuid(), (long int)getegid(), (long int)getpid());
629 group_count
= getgroups(NGROUPS_MAX
, group_list
);
631 debug_printf(" auxiliary group list:");
635 for (i
= 0; i
< group_count
; i
++) debug_printf(" %d", (int)group_list
[i
]);
637 else if (group_count
< 0)
638 debug_printf(" <error: %s>", strerror(save_errno
));
639 else debug_printf(" <none>");
647 /*************************************************
649 *************************************************/
651 /* Exim exits via this function so that it always clears up any open
657 Returns: does not return
661 exim_exit(int rc
, const uschar
* process
)
665 debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d %s%s%sterminating with rc=%d "
666 ">>>>>>>>>>>>>>>>\n", (int)getpid(),
667 process
? "(" : "", process
, process
? ") " : "", rc
);
674 /*************************************************
675 * Extract port from host address *
676 *************************************************/
678 /* Called to extract the port from the values given to -oMa and -oMi.
679 It also checks the syntax of the address, and terminates it before the
680 port data when a port is extracted.
683 address the address, with possible port on the end
685 Returns: the port, or zero if there isn't one
686 bombs out on a syntax error
690 check_port(uschar
*address
)
692 int port
= host_address_extract_port(address
);
693 if (string_is_ip_address(address
, NULL
) == 0)
695 fprintf(stderr
, "exim abandoned: \"%s\" is not an IP address\n", address
);
703 /*************************************************
704 * Test/verify an address *
705 *************************************************/
707 /* This function is called by the -bv and -bt code. It extracts a working
708 address from a full RFC 822 address. This isn't really necessary per se, but it
709 has the effect of collapsing source routes.
713 flags flag bits for verify_address()
714 exit_value to be set for failures
720 test_address(uschar
*s
, int flags
, int *exit_value
)
722 int start
, end
, domain
;
723 uschar
*parse_error
= NULL
;
724 uschar
*address
= parse_extract_address(s
, &parse_error
, &start
, &end
, &domain
,
728 fprintf(stdout
, "syntax error: %s\n", parse_error
);
733 int rc
= verify_address(deliver_make_addr(address
,TRUE
), stdout
, flags
, -1,
734 -1, -1, NULL
, NULL
, NULL
);
735 if (rc
== FAIL
) *exit_value
= 2;
736 else if (rc
== DEFER
&& *exit_value
== 0) *exit_value
= 1;
742 /*************************************************
743 * Show supported features *
744 *************************************************/
746 /* This function is called for -bV/--version and for -d to output the optional
747 features of the current Exim binary.
749 Arguments: a FILE for printing
754 show_whats_supported(FILE *f
)
758 #ifdef DB_VERSION_STRING
759 fprintf(f
, "Berkeley DB: %s\n", DB_VERSION_STRING
);
760 #elif defined(BTREEVERSION) && defined(HASHVERSION)
762 fprintf(f
, "Probably Berkeley DB version 1.8x (native mode)\n");
764 fprintf(f
, "Probably Berkeley DB version 1.8x (compatibility mode)\n");
766 #elif defined(_DBM_RDONLY) || defined(dbm_dirfno)
767 fprintf(f
, "Probably ndbm\n");
768 #elif defined(USE_TDB)
769 fprintf(f
, "Using tdb\n");
772 fprintf(f
, "Probably GDBM (native mode)\n");
774 fprintf(f
, "Probably GDBM (compatibility mode)\n");
778 fprintf(f
, "Support for:");
779 #ifdef SUPPORT_CRYPTEQ
780 fprintf(f
, " crypteq");
783 fprintf(f
, " iconv()");
788 #ifdef HAVE_SETCLASSRESOURCES
789 fprintf(f
, " use_setclassresources");
798 fprintf(f
, " Expand_dlfunc");
800 #ifdef USE_TCP_WRAPPERS
801 fprintf(f
, " TCPwrappers");
805 fprintf(f
, " GnuTLS");
807 fprintf(f
, " OpenSSL");
810 #ifdef SUPPORT_TRANSLATE_IP_ADDRESS
811 fprintf(f
, " translate_ip_address");
813 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
814 fprintf(f
, " move_frozen_messages");
816 #ifdef WITH_CONTENT_SCAN
817 fprintf(f
, " Content_Scanning");
822 #ifndef DISABLE_DNSSEC
823 fprintf(f
, " DNSSEC");
825 #ifndef DISABLE_EVENT
826 fprintf(f
, " Event");
838 fprintf(f
, " PROXY");
841 fprintf(f
, " SOCKS");
845 if (tcp_fastopen_ok
) fprintf(f
, " TCP_Fast_Open");
847 #ifdef EXPERIMENTAL_LMDB
848 fprintf(f
, " Experimental_LMDB");
850 #ifdef EXPERIMENTAL_QUEUEFILE
851 fprintf(f
, " Experimental_QUEUEFILE");
853 #ifdef EXPERIMENTAL_SPF
854 fprintf(f
, " Experimental_SPF");
856 #ifdef EXPERIMENTAL_SRS
857 fprintf(f
, " Experimental_SRS");
859 #ifdef EXPERIMENTAL_BRIGHTMAIL
860 fprintf(f
, " Experimental_Brightmail");
862 #ifdef EXPERIMENTAL_DANE
863 fprintf(f
, " Experimental_DANE");
865 #ifdef EXPERIMENTAL_DCC
866 fprintf(f
, " Experimental_DCC");
868 #ifdef EXPERIMENTAL_DMARC
869 fprintf(f
, " Experimental_DMARC");
871 #ifdef EXPERIMENTAL_DSN_INFO
872 fprintf(f
, " Experimental_DSN_info");
876 fprintf(f
, "Lookups (built-in):");
877 #if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2
878 fprintf(f
, " lsearch wildlsearch nwildlsearch iplsearch");
880 #if defined(LOOKUP_CDB) && LOOKUP_CDB!=2
883 #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2
884 fprintf(f
, " dbm dbmjz dbmnz");
886 #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2
887 fprintf(f
, " dnsdb");
889 #if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2
890 fprintf(f
, " dsearch");
892 #if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2
893 fprintf(f
, " ibase");
895 #if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2
896 fprintf(f
, " ldap ldapdn ldapm");
898 #ifdef EXPERIMENTAL_LMDB
901 #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2
902 fprintf(f
, " mysql");
904 #if defined(LOOKUP_NIS) && LOOKUP_NIS!=2
905 fprintf(f
, " nis nis0");
907 #if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2
908 fprintf(f
, " nisplus");
910 #if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2
911 fprintf(f
, " oracle");
913 #if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2
914 fprintf(f
, " passwd");
916 #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2
917 fprintf(f
, " pgsql");
919 #if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2
920 fprintf(f
, " redis");
922 #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2
923 fprintf(f
, " sqlite");
925 #if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2
926 fprintf(f
, " testdb");
928 #if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2
929 fprintf(f
, " whoson");
933 auth_show_supported(f
);
934 route_show_supported(f
);
935 transport_show_supported(f
);
937 #ifdef WITH_CONTENT_SCAN
938 malware_show_supported(f
);
941 if (fixed_never_users
[0] > 0)
944 fprintf(f
, "Fixed never_users: ");
945 for (i
= 1; i
<= (int)fixed_never_users
[0] - 1; i
++)
946 fprintf(f
, "%d:", (unsigned int)fixed_never_users
[i
]);
947 fprintf(f
, "%d\n", (unsigned int)fixed_never_users
[i
]);
950 fprintf(f
, "Configure owner: %d:%d\n", config_uid
, config_gid
);
952 fprintf(f
, "Size of off_t: " SIZE_T_FMT
"\n", sizeof(off_t
));
954 /* Everything else is details which are only worth reporting when debugging.
955 Perhaps the tls_version_report should move into this too. */
960 /* clang defines __GNUC__ (at least, for me) so test for it first */
961 #if defined(__clang__)
962 fprintf(f
, "Compiler: CLang [%s]\n", __clang_version__
);
963 #elif defined(__GNUC__)
964 fprintf(f
, "Compiler: GCC [%s]\n",
968 "? unknown version ?"
972 fprintf(f
, "Compiler: <unknown>\n");
975 #if defined(__GLIBC__) && !defined(__UCLIBC__)
976 fprintf(f
, "Library version: Glibc: Compile: %d.%d\n",
977 __GLIBC__
, __GLIBC_MINOR__
);
978 if (__GLIBC_PREREQ(2, 1))
979 fprintf(f
, " Runtime: %s\n",
980 gnu_get_libc_version());
984 tls_version_report(f
);
987 utf8_version_report(f
);
990 for (authi
= auths_available
; *authi
->driver_name
!= '\0'; ++authi
)
991 if (authi
->version_report
)
992 (*authi
->version_report
)(f
);
994 /* PCRE_PRERELEASE is either defined and empty or a bare sequence of
995 characters; unless it's an ancient version of PCRE in which case it
997 #ifndef PCRE_PRERELEASE
998 # define PCRE_PRERELEASE
1001 #define EXPAND_AND_QUOTE(X) QUOTE(X)
1002 fprintf(f
, "Library version: PCRE: Compile: %d.%d%s\n"
1004 PCRE_MAJOR
, PCRE_MINOR
,
1005 EXPAND_AND_QUOTE(PCRE_PRERELEASE
) "",
1008 #undef EXPAND_AND_QUOTE
1011 for (i
= 0; i
< lookup_list_count
; i
++)
1012 if (lookup_list
[i
]->version_report
)
1013 lookup_list
[i
]->version_report(f
);
1015 #ifdef WHITELIST_D_MACROS
1016 fprintf(f
, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS
);
1018 fprintf(f
, "WHITELIST_D_MACROS unset\n");
1020 #ifdef TRUSTED_CONFIG_LIST
1021 fprintf(f
, "TRUSTED_CONFIG_LIST: \"%s\"\n", TRUSTED_CONFIG_LIST
);
1023 fprintf(f
, "TRUSTED_CONFIG_LIST unset\n");
1030 /*************************************************
1031 * Show auxiliary information about Exim *
1032 *************************************************/
1035 show_exim_information(enum commandline_info request
, FILE *stream
)
1042 fprintf(stream
, "Oops, something went wrong.\n");
1046 "The -bI: flag takes a string indicating which information to provide.\n"
1047 "If the string is not recognised, you'll get this help (on stderr).\n"
1049 " exim -bI:help this information\n"
1050 " exim -bI:dscp list of known dscp value keywords\n"
1051 " exim -bI:sieve list of supported sieve extensions\n"
1055 for (pp
= exim_sieve_extension_list
; *pp
; ++pp
)
1056 fprintf(stream
, "%s\n", *pp
);
1059 dscp_list_to_stream(stream
);
1065 /*************************************************
1066 * Quote a local part *
1067 *************************************************/
1069 /* This function is used when a sender address or a From: or Sender: header
1070 line is being created from the caller's login, or from an authenticated_id. It
1071 applies appropriate quoting rules for a local part.
1073 Argument: the local part
1074 Returns: the local part, quoted if necessary
1078 local_part_quote(uschar
*lpart
)
1080 BOOL needs_quote
= FALSE
;
1084 for (t
= lpart
; !needs_quote
&& *t
!= 0; t
++)
1086 needs_quote
= !isalnum(*t
) && strchr("!#$%&'*+-/=?^_`{|}~", *t
) == NULL
&&
1087 (*t
!= '.' || t
== lpart
|| t
[1] == 0);
1090 if (!needs_quote
) return lpart
;
1092 g
= string_catn(NULL
, US
"\"", 1);
1096 uschar
*nq
= US
Ustrpbrk(lpart
, "\\\"");
1099 g
= string_cat(g
, lpart
);
1102 g
= string_catn(g
, lpart
, nq
- lpart
);
1103 g
= string_catn(g
, US
"\\", 1);
1104 g
= string_catn(g
, nq
, 1);
1108 g
= string_catn(g
, US
"\"", 1);
1109 return string_from_gstring(g
);
1115 /*************************************************
1116 * Load readline() functions *
1117 *************************************************/
1119 /* This function is called from testing executions that read data from stdin,
1120 but only when running as the calling user. Currently, only -be does this. The
1121 function loads the readline() function library and passes back the functions.
1122 On some systems, it needs the curses library, so load that too, but try without
1123 it if loading fails. All this functionality has to be requested at build time.
1126 fn_readline_ptr pointer to where to put the readline pointer
1127 fn_addhist_ptr pointer to where to put the addhistory function
1129 Returns: the dlopen handle or NULL on failure
1133 set_readline(char * (**fn_readline_ptr
)(const char *),
1134 void (**fn_addhist_ptr
)(const char *))
1137 void *dlhandle_curses
= dlopen("libcurses." DYNLIB_FN_EXT
, RTLD_GLOBAL
|RTLD_LAZY
);
1139 dlhandle
= dlopen("libreadline." DYNLIB_FN_EXT
, RTLD_GLOBAL
|RTLD_NOW
);
1140 if (dlhandle_curses
!= NULL
) dlclose(dlhandle_curses
);
1142 if (dlhandle
!= NULL
)
1144 /* Checked manual pages; at least in GNU Readline 6.1, the prototypes are:
1145 * char * readline (const char *prompt);
1146 * void add_history (const char *string);
1148 *fn_readline_ptr
= (char *(*)(const char*))dlsym(dlhandle
, "readline");
1149 *fn_addhist_ptr
= (void(*)(const char*))dlsym(dlhandle
, "add_history");
1153 DEBUG(D_any
) debug_printf("failed to load readline: %s\n", dlerror());
1162 /*************************************************
1163 * Get a line from stdin for testing things *
1164 *************************************************/
1166 /* This function is called when running tests that can take a number of lines
1167 of input (for example, -be and -bt). It handles continuations and trailing
1168 spaces. And prompting and a blank line output on eof. If readline() is in use,
1169 the arguments are non-NULL and provide the relevant functions.
1172 fn_readline readline function or NULL
1173 fn_addhist addhist function or NULL
1175 Returns: pointer to dynamic memory, or NULL at end of file
1179 get_stdinput(char *(*fn_readline
)(const char *), void(*fn_addhist
)(const char *))
1184 if (!fn_readline
) { printf("> "); fflush(stdout
); }
1188 uschar buffer
[1024];
1192 char *readline_line
= NULL
;
1193 if (fn_readline
!= NULL
)
1195 if ((readline_line
= fn_readline((i
> 0)? "":"> ")) == NULL
) break;
1196 if (*readline_line
!= 0 && fn_addhist
!= NULL
) fn_addhist(readline_line
);
1197 p
= US readline_line
;
1202 /* readline() not in use */
1205 if (Ufgets(buffer
, sizeof(buffer
), stdin
) == NULL
) break;
1209 /* Handle the line */
1211 ss
= p
+ (int)Ustrlen(p
);
1212 while (ss
> p
&& isspace(ss
[-1])) ss
--;
1216 while (p
< ss
&& isspace(*p
)) p
++; /* leading space after cont */
1219 g
= string_catn(g
, p
, ss
- p
);
1222 if (fn_readline
) free(readline_line
);
1225 /* g can only be NULL if ss==p */
1226 if (ss
== p
|| g
->s
[g
->ptr
-1] != '\\')
1230 (void) string_from_gstring(g
);
1233 if (!g
) printf("\n");
1234 return string_from_gstring(g
);
1239 /*************************************************
1240 * Output usage information for the program *
1241 *************************************************/
1243 /* This function is called when there are no recipients
1244 or a specific --help argument was added.
1247 progname information on what name we were called by
1249 Returns: DOES NOT RETURN
1253 exim_usage(uschar
*progname
)
1256 /* Handle specific program invocation variants */
1257 if (Ustrcmp(progname
, US
"-mailq") == 0)
1260 "mailq - list the contents of the mail queue\n\n"
1261 "For a list of options, see the Exim documentation.\n");
1265 /* Generic usage - we output this whatever happens */
1267 "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n"
1268 "not directly from a shell command line. Options and/or arguments control\n"
1269 "what it does when called. For a list of options, see the Exim documentation.\n");
1276 /*************************************************
1277 * Validate that the macros given are okay *
1278 *************************************************/
1280 /* Typically, Exim will drop privileges if macros are supplied. In some
1281 cases, we want to not do so.
1283 Arguments: opt_D_used - true if the commandline had a "-D" option
1284 Returns: true if trusted, false otherwise
1288 macros_trusted(BOOL opt_D_used
)
1290 #ifdef WHITELIST_D_MACROS
1292 uschar
*whitelisted
, *end
, *p
, **whites
, **w
;
1293 int white_count
, i
, n
;
1295 BOOL prev_char_item
, found
;
1300 #ifndef WHITELIST_D_MACROS
1304 /* We only trust -D overrides for some invoking users:
1305 root, the exim run-time user, the optional config owner user.
1306 I don't know why config-owner would be needed, but since they can own the
1307 config files anyway, there's no security risk to letting them override -D. */
1308 if ( ! ((real_uid
== root_uid
)
1309 || (real_uid
== exim_uid
)
1310 #ifdef CONFIGURE_OWNER
1311 || (real_uid
== config_uid
)
1315 debug_printf("macros_trusted rejecting macros for uid %d\n", (int) real_uid
);
1319 /* Get a list of macros which are whitelisted */
1320 whitelisted
= string_copy_malloc(US WHITELIST_D_MACROS
);
1321 prev_char_item
= FALSE
;
1323 for (p
= whitelisted
; *p
!= '\0'; ++p
)
1325 if (*p
== ':' || isspace(*p
))
1330 prev_char_item
= FALSE
;
1333 if (!prev_char_item
)
1334 prev_char_item
= TRUE
;
1341 whites
= store_malloc(sizeof(uschar
*) * (white_count
+1));
1342 for (p
= whitelisted
, i
= 0; (p
!= end
) && (i
< white_count
); ++p
)
1347 if (i
== white_count
)
1349 while (*p
!= '\0' && p
< end
)
1355 /* The list of commandline macros should be very short.
1356 Accept the N*M complexity. */
1357 for (m
= macros
; m
; m
= m
->next
) if (m
->command_line
)
1360 for (w
= whites
; *w
; ++w
)
1361 if (Ustrcmp(*w
, m
->name
) == 0)
1368 if (!m
->replacement
)
1370 if ((len
= m
->replen
) == 0)
1372 n
= pcre_exec(regex_whitelisted_macro
, NULL
, CS m
->replacement
, len
,
1373 0, PCRE_EOPT
, NULL
, 0);
1376 if (n
!= PCRE_ERROR_NOMATCH
)
1377 debug_printf("macros_trusted checking %s returned %d\n", m
->name
, n
);
1381 DEBUG(D_any
) debug_printf("macros_trusted overridden to true by whitelisting\n");
1387 /*************************************************
1388 * Expansion testing *
1389 *************************************************/
1391 /* Expand and print one item, doing macro-processing.
1394 item line for expansion
1398 expansion_test_line(uschar
* line
)
1403 Ustrncpy(big_buffer
, line
, big_buffer_size
);
1404 big_buffer
[big_buffer_size
-1] = '\0';
1405 len
= Ustrlen(big_buffer
);
1407 (void) macros_expand(0, &len
, &dummy_macexp
);
1409 if (isupper(big_buffer
[0]))
1411 if (macro_read_assignment(big_buffer
))
1412 printf("Defined macro '%s'\n", mlast
->name
);
1415 if ((line
= expand_string(big_buffer
))) printf("%s\n", CS line
);
1416 else printf("Failed: %s\n", expand_string_message
);
1420 /*************************************************
1421 * Entry point and high-level code *
1422 *************************************************/
1424 /* Entry point for the Exim mailer. Analyse the arguments and arrange to take
1425 the appropriate action. All the necessary functions are present in the one
1426 binary. I originally thought one should split it up, but it turns out that so
1427 much of the apparatus is needed in each chunk that one might as well just have
1428 it all available all the time, which then makes the coding easier as well.
1431 argc count of entries in argv
1432 argv argument strings, with argv[0] being the program name
1434 Returns: EXIT_SUCCESS if terminated successfully
1435 EXIT_FAILURE otherwise, except when a message has been sent
1436 to the sender, and -oee was given
1440 main(int argc
, char **cargv
)
1442 uschar
**argv
= USS cargv
;
1443 int arg_receive_timeout
= -1;
1444 int arg_smtp_receive_timeout
= -1;
1445 int arg_error_handling
= error_handling
;
1446 int filter_sfd
= -1;
1447 int filter_ufd
= -1;
1450 int list_queue_option
= 0;
1452 int msg_action_arg
= -1;
1453 int namelen
= (argv
[0] == NULL
)? 0 : Ustrlen(argv
[0]);
1454 int queue_only_reason
= 0;
1456 int perl_start_option
= 0;
1458 int recipients_arg
= argc
;
1459 int sender_address_domain
= 0;
1460 int test_retry_arg
= -1;
1461 int test_rewrite_arg
= -1;
1462 BOOL arg_queue_only
= FALSE
;
1463 BOOL bi_option
= FALSE
;
1464 BOOL checking
= FALSE
;
1465 BOOL count_queue
= FALSE
;
1466 BOOL expansion_test
= FALSE
;
1467 BOOL extract_recipients
= FALSE
;
1468 BOOL flag_G
= FALSE
;
1469 BOOL flag_n
= FALSE
;
1470 BOOL forced_delivery
= FALSE
;
1471 BOOL f_end_dot
= FALSE
;
1472 BOOL deliver_give_up
= FALSE
;
1473 BOOL list_queue
= FALSE
;
1474 BOOL list_options
= FALSE
;
1475 BOOL list_config
= FALSE
;
1476 BOOL local_queue_only
;
1478 BOOL one_msg_action
= FALSE
;
1479 BOOL opt_D_used
= FALSE
;
1480 BOOL queue_only_set
= FALSE
;
1481 BOOL receiving_message
= TRUE
;
1482 BOOL sender_ident_set
= FALSE
;
1483 BOOL session_local_queue_only
;
1485 BOOL removed_privilege
= FALSE
;
1486 BOOL usage_wanted
= FALSE
;
1487 BOOL verify_address_mode
= FALSE
;
1488 BOOL verify_as_sender
= FALSE
;
1489 BOOL version_printed
= FALSE
;
1490 uschar
*alias_arg
= NULL
;
1491 uschar
*called_as
= US
"";
1492 uschar
*cmdline_syslog_name
= NULL
;
1493 uschar
*start_queue_run_id
= NULL
;
1494 uschar
*stop_queue_run_id
= NULL
;
1495 uschar
*expansion_test_message
= NULL
;
1496 uschar
*ftest_domain
= NULL
;
1497 uschar
*ftest_localpart
= NULL
;
1498 uschar
*ftest_prefix
= NULL
;
1499 uschar
*ftest_suffix
= NULL
;
1500 uschar
*log_oneline
= NULL
;
1501 uschar
*malware_test_file
= NULL
;
1502 uschar
*real_sender_address
;
1503 uschar
*originator_home
= US
"/";
1508 struct stat statbuf
;
1509 pid_t passed_qr_pid
= (pid_t
)0;
1510 int passed_qr_pipe
= -1;
1511 gid_t group_list
[NGROUPS_MAX
];
1513 /* For the -bI: flag */
1514 enum commandline_info info_flag
= CMDINFO_NONE
;
1515 BOOL info_stdout
= FALSE
;
1517 /* Possible options for -R and -S */
1519 static uschar
*rsopts
[] = { US
"f", US
"ff", US
"r", US
"rf", US
"rff" };
1521 /* Need to define this in case we need to change the environment in order
1522 to get rid of a bogus time zone. We have to make it char rather than uschar
1523 because some OS define it in /usr/include/unistd.h. */
1525 extern char **environ
;
1527 /* If the Exim user and/or group and/or the configuration file owner/group were
1528 defined by ref:name at build time, we must now find the actual uid/gid values.
1529 This is a feature to make the lives of binary distributors easier. */
1531 #ifdef EXIM_USERNAME
1532 if (route_finduser(US EXIM_USERNAME
, &pw
, &exim_uid
))
1536 fprintf(stderr
, "exim: refusing to run with uid 0 for \"%s\"\n",
1540 /* If ref:name uses a number as the name, route_finduser() returns
1541 TRUE with exim_uid set and pw coerced to NULL. */
1543 exim_gid
= pw
->pw_gid
;
1544 #ifndef EXIM_GROUPNAME
1548 "exim: ref:name should specify a usercode, not a group.\n"
1549 "exim: can't let you get away with it unless you also specify a group.\n");
1556 fprintf(stderr
, "exim: failed to find uid for user name \"%s\"\n",
1562 #ifdef EXIM_GROUPNAME
1563 if (!route_findgroup(US EXIM_GROUPNAME
, &exim_gid
))
1565 fprintf(stderr
, "exim: failed to find gid for group name \"%s\"\n",
1571 #ifdef CONFIGURE_OWNERNAME
1572 if (!route_finduser(US CONFIGURE_OWNERNAME
, NULL
, &config_uid
))
1574 fprintf(stderr
, "exim: failed to find uid for user name \"%s\"\n",
1575 CONFIGURE_OWNERNAME
);
1580 /* We default the system_filter_user to be the Exim run-time user, as a
1581 sane non-root value. */
1582 system_filter_uid
= exim_uid
;
1584 #ifdef CONFIGURE_GROUPNAME
1585 if (!route_findgroup(US CONFIGURE_GROUPNAME
, &config_gid
))
1587 fprintf(stderr
, "exim: failed to find gid for group name \"%s\"\n",
1588 CONFIGURE_GROUPNAME
);
1593 /* In the Cygwin environment, some initialization used to need doing.
1594 It was fudged in by means of this macro; now no longer but we'll leave
1595 it in case of others. */
1601 /* Check a field which is patched when we are running Exim within its
1602 testing harness; do a fast initial check, and then the whole thing. */
1604 running_in_test_harness
=
1605 *running_status
== '<' && Ustrcmp(running_status
, "<<<testing>>>") == 0;
1607 /* The C standard says that the equivalent of setlocale(LC_ALL, "C") is obeyed
1608 at the start of a program; however, it seems that some environments do not
1609 follow this. A "strange" locale can affect the formatting of timestamps, so we
1612 setlocale(LC_ALL
, "C");
1614 /* Set up the default handler for timing using alarm(). */
1616 os_non_restarting_signal(SIGALRM
, sigalrm_handler
);
1618 /* Ensure we have a buffer for constructing log entries. Use malloc directly,
1619 because store_malloc writes a log entry on failure. */
1621 if (!(log_buffer
= US
malloc(LOG_BUFFER_SIZE
)))
1623 fprintf(stderr
, "exim: failed to get store for log buffer\n");
1627 /* Initialize the default log options. */
1629 bits_set(log_selector
, log_selector_size
, log_default
);
1631 /* Set log_stderr to stderr, provided that stderr exists. This gets reset to
1632 NULL when the daemon is run and the file is closed. We have to use this
1633 indirection, because some systems don't allow writing to the variable "stderr".
1636 if (fstat(fileno(stderr
), &statbuf
) >= 0) log_stderr
= stderr
;
1638 /* Arrange for the PCRE regex library to use our store functions. Note that
1639 the normal calls are actually macros that add additional arguments for
1640 debugging purposes so we have to assign specially constructed functions here.
1641 The default is to use store in the stacking pool, but this is overridden in the
1642 regex_must_compile() function. */
1644 pcre_malloc
= function_store_get
;
1645 pcre_free
= function_dummy_free
;
1647 /* Ensure there is a big buffer for temporary use in several places. It is put
1648 in malloc store so that it can be freed for enlargement if necessary. */
1650 big_buffer
= store_malloc(big_buffer_size
);
1652 /* Set up the handler for the data request signal, and set the initial
1653 descriptive text. */
1655 set_process_info("initializing");
1656 os_restarting_signal(SIGUSR1
, usr1_handler
);
1658 /* SIGHUP is used to get the daemon to reconfigure. It gets set as appropriate
1659 in the daemon code. For the rest of Exim's uses, we ignore it. */
1661 signal(SIGHUP
, SIG_IGN
);
1663 /* We don't want to die on pipe errors as the code is written to handle
1664 the write error instead. */
1666 signal(SIGPIPE
, SIG_IGN
);
1668 /* Under some circumstance on some OS, Exim can get called with SIGCHLD
1669 set to SIG_IGN. This causes subprocesses that complete before the parent
1670 process waits for them not to hang around, so when Exim calls wait(), nothing
1671 is there. The wait() code has been made robust against this, but let's ensure
1672 that SIGCHLD is set to SIG_DFL, because it's tidier to wait and get a process
1673 ending status. We use sigaction rather than plain signal() on those OS where
1674 SA_NOCLDWAIT exists, because we want to be sure it is turned off. (There was a
1675 problem on AIX with this.) */
1679 struct sigaction act
;
1680 act
.sa_handler
= SIG_DFL
;
1681 sigemptyset(&(act
.sa_mask
));
1683 sigaction(SIGCHLD
, &act
, NULL
);
1686 signal(SIGCHLD
, SIG_DFL
);
1689 /* Save the arguments for use if we re-exec exim as a daemon after receiving
1694 /* Set up the version number. Set up the leading 'E' for the external form of
1695 message ids, set the pointer to the internal form, and initialize it to
1696 indicate no message being processed. */
1699 message_id_option
[0] = '-';
1700 message_id_external
= message_id_option
+ 1;
1701 message_id_external
[0] = 'E';
1702 message_id
= message_id_external
+ 1;
1705 /* Set the umask to zero so that any files Exim creates using open() are
1706 created with the modes that it specifies. NOTE: Files created with fopen() have
1707 a problem, which was not recognized till rather late (February 2006). With this
1708 umask, such files will be world writeable. (They are all content scanning files
1709 in the spool directory, which isn't world-accessible, so this is not a
1710 disaster, but it's untidy.) I don't want to change this overall setting,
1711 however, because it will interact badly with the open() calls. Instead, there's
1712 now a function called modefopen() that fiddles with the umask while calling
1717 /* Precompile the regular expression for matching a message id. Keep this in
1718 step with the code that generates ids in the accept.c module. We need to do
1719 this here, because the -M options check their arguments for syntactic validity
1720 using mac_ismsgid, which uses this. */
1723 regex_must_compile(US
"^(?:[^\\W_]{6}-){2}[^\\W_]{2}$", FALSE
, TRUE
);
1725 /* Precompile the regular expression that is used for matching an SMTP error
1726 code, possibly extended, at the start of an error message. Note that the
1727 terminating whitespace character is included. */
1730 regex_must_compile(US
"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?",
1733 #ifdef WHITELIST_D_MACROS
1734 /* Precompile the regular expression used to filter the content of macros
1735 given to -D for permissibility. */
1737 regex_whitelisted_macro
=
1738 regex_must_compile(US
"^[A-Za-z0-9_/.-]*$", FALSE
, TRUE
);
1741 for (i
= 0; i
< REGEX_VARS
; i
++) regex_vars
[i
] = NULL
;
1743 /* If the program is called as "mailq" treat it as equivalent to "exim -bp";
1744 this seems to be a generally accepted convention, since one finds symbolic
1745 links called "mailq" in standard OS configurations. */
1747 if ((namelen
== 5 && Ustrcmp(argv
[0], "mailq") == 0) ||
1748 (namelen
> 5 && Ustrncmp(argv
[0] + namelen
- 6, "/mailq", 6) == 0))
1751 receiving_message
= FALSE
;
1752 called_as
= US
"-mailq";
1755 /* If the program is called as "rmail" treat it as equivalent to
1756 "exim -i -oee", thus allowing UUCP messages to be input using non-SMTP mode,
1757 i.e. preventing a single dot on a line from terminating the message, and
1758 returning with zero return code, even in cases of error (provided an error
1759 message has been sent). */
1761 if ((namelen
== 5 && Ustrcmp(argv
[0], "rmail") == 0) ||
1762 (namelen
> 5 && Ustrncmp(argv
[0] + namelen
- 6, "/rmail", 6) == 0))
1765 called_as
= US
"-rmail";
1766 errors_sender_rc
= EXIT_SUCCESS
;
1769 /* If the program is called as "rsmtp" treat it as equivalent to "exim -bS";
1770 this is a smail convention. */
1772 if ((namelen
== 5 && Ustrcmp(argv
[0], "rsmtp") == 0) ||
1773 (namelen
> 5 && Ustrncmp(argv
[0] + namelen
- 6, "/rsmtp", 6) == 0))
1775 smtp_input
= smtp_batched_input
= TRUE
;
1776 called_as
= US
"-rsmtp";
1779 /* If the program is called as "runq" treat it as equivalent to "exim -q";
1780 this is a smail convention. */
1782 if ((namelen
== 4 && Ustrcmp(argv
[0], "runq") == 0) ||
1783 (namelen
> 4 && Ustrncmp(argv
[0] + namelen
- 5, "/runq", 5) == 0))
1786 receiving_message
= FALSE
;
1787 called_as
= US
"-runq";
1790 /* If the program is called as "newaliases" treat it as equivalent to
1791 "exim -bi"; this is a sendmail convention. */
1793 if ((namelen
== 10 && Ustrcmp(argv
[0], "newaliases") == 0) ||
1794 (namelen
> 10 && Ustrncmp(argv
[0] + namelen
- 11, "/newaliases", 11) == 0))
1797 receiving_message
= FALSE
;
1798 called_as
= US
"-newaliases";
1801 /* Save the original effective uid for a couple of uses later. It should
1802 normally be root, but in some esoteric environments it may not be. */
1804 original_euid
= geteuid();
1806 /* Get the real uid and gid. If the caller is root, force the effective uid/gid
1807 to be the same as the real ones. This makes a difference only if Exim is setuid
1808 (or setgid) to something other than root, which could be the case in some
1809 special configurations. */
1811 real_uid
= getuid();
1812 real_gid
= getgid();
1814 if (real_uid
== root_uid
)
1816 rv
= setgid(real_gid
);
1819 fprintf(stderr
, "exim: setgid(%ld) failed: %s\n",
1820 (long int)real_gid
, strerror(errno
));
1823 rv
= setuid(real_uid
);
1826 fprintf(stderr
, "exim: setuid(%ld) failed: %s\n",
1827 (long int)real_uid
, strerror(errno
));
1832 /* If neither the original real uid nor the original euid was root, Exim is
1833 running in an unprivileged state. */
1835 unprivileged
= (real_uid
!= root_uid
&& original_euid
!= root_uid
);
1837 /* Scan the program's arguments. Some can be dealt with right away; others are
1838 simply recorded for checking and handling afterwards. Do a high-level switch
1839 on the second character (the one after '-'), to save some effort. */
1841 for (i
= 1; i
< argc
; i
++)
1843 BOOL badarg
= FALSE
;
1844 uschar
*arg
= argv
[i
];
1848 /* An argument not starting with '-' is the start of a recipients list;
1849 break out of the options-scanning loop. */
1857 /* An option consisting of -- terminates the options */
1859 if (Ustrcmp(arg
, "--") == 0)
1861 recipients_arg
= i
+ 1;
1865 /* Handle flagged options */
1867 switchchar
= arg
[1];
1870 /* Make all -ex options synonymous with -oex arguments, since that
1871 is assumed by various callers. Also make -qR options synonymous with -R
1872 options, as that seems to be required as well. Allow for -qqR too, and
1873 the same for -S options. */
1875 if (Ustrncmp(arg
+1, "oe", 2) == 0 ||
1876 Ustrncmp(arg
+1, "qR", 2) == 0 ||
1877 Ustrncmp(arg
+1, "qS", 2) == 0)
1879 switchchar
= arg
[2];
1882 else if (Ustrncmp(arg
+1, "qqR", 3) == 0 || Ustrncmp(arg
+1, "qqS", 3) == 0)
1884 switchchar
= arg
[3];
1886 queue_2stage
= TRUE
;
1889 /* Make -r synonymous with -f, since it is a documented alias */
1891 else if (arg
[1] == 'r') switchchar
= 'f';
1893 /* Make -ov synonymous with -v */
1895 else if (Ustrcmp(arg
, "-ov") == 0)
1901 /* deal with --option_aliases */
1902 else if (switchchar
== '-')
1904 if (Ustrcmp(argrest
, "help") == 0)
1906 usage_wanted
= TRUE
;
1909 else if (Ustrcmp(argrest
, "version") == 0)
1916 /* High-level switch on active initial letter */
1921 /* sendmail uses -Ac and -Am to control which .cf file is used;
1924 if (*argrest
== '\0') { badarg
= TRUE
; break; }
1927 BOOL ignore
= FALSE
;
1932 if (*(argrest
+ 1) == '\0')
1936 if (!ignore
) { badarg
= TRUE
; break; }
1940 /* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean
1941 so has no need of it. */
1944 if (*argrest
== 0) i
++; /* Skip over the type */
1949 receiving_message
= FALSE
; /* Reset TRUE for -bm, -bS, -bs below */
1951 /* -bd: Run in daemon mode, awaiting SMTP connections.
1952 -bdf: Ditto, but in the foreground.
1955 if (*argrest
== 'd')
1957 daemon_listen
= TRUE
;
1958 if (*(++argrest
) == 'f') background_daemon
= FALSE
;
1959 else if (*argrest
!= 0) { badarg
= TRUE
; break; }
1962 /* -be: Run in expansion test mode
1963 -bem: Ditto, but read a message from a file first
1966 else if (*argrest
== 'e')
1968 expansion_test
= checking
= TRUE
;
1969 if (argrest
[1] == 'm')
1971 if (++i
>= argc
) { badarg
= TRUE
; break; }
1972 expansion_test_message
= argv
[i
];
1975 if (argrest
[1] != 0) { badarg
= TRUE
; break; }
1978 /* -bF: Run system filter test */
1980 else if (*argrest
== 'F')
1982 filter_test
|= checking
= FTEST_SYSTEM
;
1983 if (*(++argrest
) != 0) { badarg
= TRUE
; break; }
1984 if (++i
< argc
) filter_test_sfile
= argv
[i
]; else
1986 fprintf(stderr
, "exim: file name expected after %s\n", argv
[i
-1]);
1991 /* -bf: Run user filter test
1992 -bfd: Set domain for filter testing
1993 -bfl: Set local part for filter testing
1994 -bfp: Set prefix for filter testing
1995 -bfs: Set suffix for filter testing
1998 else if (*argrest
== 'f')
2000 if (*(++argrest
) == 0)
2002 filter_test
|= checking
= FTEST_USER
;
2003 if (++i
< argc
) filter_test_ufile
= argv
[i
]; else
2005 fprintf(stderr
, "exim: file name expected after %s\n", argv
[i
-1]);
2013 fprintf(stderr
, "exim: string expected after %s\n", arg
);
2016 if (Ustrcmp(argrest
, "d") == 0) ftest_domain
= argv
[i
];
2017 else if (Ustrcmp(argrest
, "l") == 0) ftest_localpart
= argv
[i
];
2018 else if (Ustrcmp(argrest
, "p") == 0) ftest_prefix
= argv
[i
];
2019 else if (Ustrcmp(argrest
, "s") == 0) ftest_suffix
= argv
[i
];
2020 else { badarg
= TRUE
; break; }
2024 /* -bh: Host checking - an IP address must follow. */
2026 else if (Ustrcmp(argrest
, "h") == 0 || Ustrcmp(argrest
, "hc") == 0)
2028 if (++i
>= argc
) { badarg
= TRUE
; break; }
2029 sender_host_address
= argv
[i
];
2030 host_checking
= checking
= log_testing_mode
= TRUE
;
2031 host_checking_callout
= argrest
[1] == 'c';
2032 message_logs
= FALSE
;
2035 /* -bi: This option is used by sendmail to initialize *the* alias file,
2036 though it has the -oA option to specify a different file. Exim has no
2037 concept of *the* alias file, but since Sun's YP make script calls
2038 sendmail this way, some support must be provided. */
2040 else if (Ustrcmp(argrest
, "i") == 0) bi_option
= TRUE
;
2042 /* -bI: provide information, of the type to follow after a colon.
2043 This is an Exim flag. */
2045 else if (argrest
[0] == 'I' && Ustrlen(argrest
) >= 2 && argrest
[1] == ':')
2047 uschar
*p
= &argrest
[2];
2048 info_flag
= CMDINFO_HELP
;
2051 if (strcmpic(p
, CUS
"sieve") == 0)
2053 info_flag
= CMDINFO_SIEVE
;
2056 else if (strcmpic(p
, CUS
"dscp") == 0)
2058 info_flag
= CMDINFO_DSCP
;
2061 else if (strcmpic(p
, CUS
"help") == 0)
2068 /* -bm: Accept and deliver message - the default option. Reinstate
2069 receiving_message, which got turned off for all -b options. */
2071 else if (Ustrcmp(argrest
, "m") == 0) receiving_message
= TRUE
;
2073 /* -bmalware: test the filename given for malware */
2075 else if (Ustrcmp(argrest
, "malware") == 0)
2077 if (++i
>= argc
) { badarg
= TRUE
; break; }
2079 malware_test_file
= argv
[i
];
2082 /* -bnq: For locally originating messages, do not qualify unqualified
2083 addresses. In the envelope, this causes errors; in header lines they
2086 else if (Ustrcmp(argrest
, "nq") == 0)
2088 allow_unqualified_sender
= FALSE
;
2089 allow_unqualified_recipient
= FALSE
;
2092 /* -bpxx: List the contents of the mail queue, in various forms. If
2093 the option is -bpc, just a queue count is needed. Otherwise, if the
2094 first letter after p is r, then order is random. */
2096 else if (*argrest
== 'p')
2098 if (*(++argrest
) == 'c')
2101 if (*(++argrest
) != 0) badarg
= TRUE
;
2105 if (*argrest
== 'r')
2107 list_queue_option
= 8;
2110 else list_queue_option
= 0;
2114 /* -bp: List the contents of the mail queue, top-level only */
2116 if (*argrest
== 0) {}
2118 /* -bpu: List the contents of the mail queue, top-level undelivered */
2120 else if (Ustrcmp(argrest
, "u") == 0) list_queue_option
+= 1;
2122 /* -bpa: List the contents of the mail queue, including all delivered */
2124 else if (Ustrcmp(argrest
, "a") == 0) list_queue_option
+= 2;
2126 /* Unknown after -bp[r] */
2136 /* -bP: List the configuration variables given as the address list.
2137 Force -v, so configuration errors get displayed. */
2139 else if (Ustrcmp(argrest
, "P") == 0)
2141 /* -bP config: we need to setup here, because later,
2142 * when list_options is checked, the config is read already */
2143 if (argv
[i
+1] && Ustrcmp(argv
[i
+1], "config") == 0)
2146 readconf_save_config(version_string
);
2150 list_options
= TRUE
;
2151 debug_selector
|= D_v
;
2152 debug_file
= stderr
;
2156 /* -brt: Test retry configuration lookup */
2158 else if (Ustrcmp(argrest
, "rt") == 0)
2161 test_retry_arg
= i
+ 1;
2165 /* -brw: Test rewrite configuration */
2167 else if (Ustrcmp(argrest
, "rw") == 0)
2170 test_rewrite_arg
= i
+ 1;
2174 /* -bS: Read SMTP commands on standard input, but produce no replies -
2175 all errors are reported by sending messages. */
2177 else if (Ustrcmp(argrest
, "S") == 0)
2178 smtp_input
= smtp_batched_input
= receiving_message
= TRUE
;
2180 /* -bs: Read SMTP commands on standard input and produce SMTP replies
2181 on standard output. */
2183 else if (Ustrcmp(argrest
, "s") == 0) smtp_input
= receiving_message
= TRUE
;
2185 /* -bt: address testing mode */
2187 else if (Ustrcmp(argrest
, "t") == 0)
2188 address_test_mode
= checking
= log_testing_mode
= TRUE
;
2190 /* -bv: verify addresses */
2192 else if (Ustrcmp(argrest
, "v") == 0)
2193 verify_address_mode
= checking
= log_testing_mode
= TRUE
;
2195 /* -bvs: verify sender addresses */
2197 else if (Ustrcmp(argrest
, "vs") == 0)
2199 verify_address_mode
= checking
= log_testing_mode
= TRUE
;
2200 verify_as_sender
= TRUE
;
2203 /* -bV: Print version string and support details */
2205 else if (Ustrcmp(argrest
, "V") == 0)
2207 printf("Exim version %s #%s built %s\n", version_string
,
2208 version_cnumber
, version_date
);
2209 printf("%s\n", CS version_copyright
);
2210 version_printed
= TRUE
;
2211 show_whats_supported(stdout
);
2212 log_testing_mode
= TRUE
;
2215 /* -bw: inetd wait mode, accept a listening socket as stdin */
2217 else if (*argrest
== 'w')
2219 inetd_wait_mode
= TRUE
;
2220 background_daemon
= FALSE
;
2221 daemon_listen
= TRUE
;
2222 if (*(++argrest
) != '\0')
2224 inetd_wait_timeout
= readconf_readtime(argrest
, 0, FALSE
);
2225 if (inetd_wait_timeout
<= 0)
2227 fprintf(stderr
, "exim: bad time value %s: abandoned\n", argv
[i
]);
2237 /* -C: change configuration file list; ignore if it isn't really
2238 a change! Enforce a prefix check if required. */
2243 if(++i
< argc
) argrest
= argv
[i
]; else
2244 { badarg
= TRUE
; break; }
2246 if (Ustrcmp(config_main_filelist
, argrest
) != 0)
2248 #ifdef ALT_CONFIG_PREFIX
2250 int len
= Ustrlen(ALT_CONFIG_PREFIX
);
2251 const uschar
*list
= argrest
;
2253 while((filename
= string_nextinlist(&list
, &sep
, big_buffer
,
2254 big_buffer_size
)) != NULL
)
2256 if ((Ustrlen(filename
) < len
||
2257 Ustrncmp(filename
, ALT_CONFIG_PREFIX
, len
) != 0 ||
2258 Ustrstr(filename
, "/../") != NULL
) &&
2259 (Ustrcmp(filename
, "/dev/null") != 0 || real_uid
!= root_uid
))
2261 fprintf(stderr
, "-C Permission denied\n");
2266 if (real_uid
!= root_uid
)
2268 #ifdef TRUSTED_CONFIG_LIST
2270 if (real_uid
!= exim_uid
2271 #ifdef CONFIGURE_OWNER
2272 && real_uid
!= config_uid
2275 trusted_config
= FALSE
;
2278 FILE *trust_list
= Ufopen(TRUSTED_CONFIG_LIST
, "rb");
2281 struct stat statbuf
;
2283 if (fstat(fileno(trust_list
), &statbuf
) != 0 ||
2284 (statbuf
.st_uid
!= root_uid
/* owner not root */
2285 #ifdef CONFIGURE_OWNER
2286 && statbuf
.st_uid
!= config_uid
/* owner not the special one */
2289 (statbuf
.st_gid
!= root_gid
/* group not root */
2290 #ifdef CONFIGURE_GROUP
2291 && statbuf
.st_gid
!= config_gid
/* group not the special one */
2293 && (statbuf
.st_mode
& 020) != 0 /* group writeable */
2295 (statbuf
.st_mode
& 2) != 0) /* world writeable */
2297 trusted_config
= FALSE
;
2302 /* Well, the trust list at least is up to scratch... */
2303 void *reset_point
= store_get(0);
2304 uschar
*trusted_configs
[32];
2308 while (Ufgets(big_buffer
, big_buffer_size
, trust_list
))
2310 uschar
*start
= big_buffer
, *nl
;
2311 while (*start
&& isspace(*start
))
2315 nl
= Ustrchr(start
, '\n');
2318 trusted_configs
[nr_configs
++] = string_copy(start
);
2319 if (nr_configs
== 32)
2327 const uschar
*list
= argrest
;
2329 while (trusted_config
&& (filename
= string_nextinlist(&list
,
2330 &sep
, big_buffer
, big_buffer_size
)) != NULL
)
2332 for (i
=0; i
< nr_configs
; i
++)
2334 if (Ustrcmp(filename
, trusted_configs
[i
]) == 0)
2337 if (i
== nr_configs
)
2339 trusted_config
= FALSE
;
2343 store_reset(reset_point
);
2347 /* No valid prefixes found in trust_list file. */
2348 trusted_config
= FALSE
;
2354 /* Could not open trust_list file. */
2355 trusted_config
= FALSE
;
2359 /* Not root; don't trust config */
2360 trusted_config
= FALSE
;
2364 config_main_filelist
= argrest
;
2365 config_changed
= TRUE
;
2370 /* -D: set up a macro definition */
2373 #ifdef DISABLE_D_OPTION
2374 fprintf(stderr
, "exim: -D is not available in this Exim binary\n");
2381 uschar
*s
= argrest
;
2384 while (isspace(*s
)) s
++;
2386 if (*s
< 'A' || *s
> 'Z')
2388 fprintf(stderr
, "exim: macro name set by -D must start with "
2389 "an upper case letter\n");
2393 while (isalnum(*s
) || *s
== '_')
2395 if (ptr
< sizeof(name
)-1) name
[ptr
++] = *s
;
2399 if (ptr
== 0) { badarg
= TRUE
; break; }
2400 while (isspace(*s
)) s
++;
2403 if (*s
++ != '=') { badarg
= TRUE
; break; }
2404 while (isspace(*s
)) s
++;
2407 for (m
= macros
; m
; m
= m
->next
)
2408 if (Ustrcmp(m
->name
, name
) == 0)
2410 fprintf(stderr
, "exim: duplicated -D in command line\n");
2414 m
= macro_create(string_copy(name
), string_copy(s
), TRUE
);
2416 if (clmacro_count
>= MAX_CLMACROS
)
2418 fprintf(stderr
, "exim: too many -D options on command line\n");
2421 clmacros
[clmacro_count
++] = string_sprintf("-D%s=%s", m
->name
,
2427 /* -d: Set debug level (see also -v below) or set the drop_cr option.
2428 The latter is now a no-op, retained for compatibility only. If -dd is used,
2429 debugging subprocesses of the daemon is disabled. */
2432 if (Ustrcmp(argrest
, "ropcr") == 0)
2434 /* drop_cr = TRUE; */
2437 /* Use an intermediate variable so that we don't set debugging while
2438 decoding the debugging bits. */
2442 unsigned int selector
= D_default
;
2445 if (*argrest
== 'd')
2447 debug_daemon
= TRUE
;
2451 decode_bits(&selector
, 1, debug_notall
, argrest
,
2452 debug_options
, debug_options_count
, US
"debug", 0);
2453 debug_selector
= selector
;
2458 /* -E: This is a local error message. This option is not intended for
2459 external use at all, but is not restricted to trusted callers because it
2460 does no harm (just suppresses certain error messages) and if Exim is run
2461 not setuid root it won't always be trusted when it generates error
2462 messages using this option. If there is a message id following -E, point
2463 message_reference at it, for logging. */
2466 local_error_message
= TRUE
;
2467 if (mac_ismsgid(argrest
)) message_reference
= argrest
;
2471 /* -ex: The vacation program calls sendmail with the undocumented "-eq"
2472 option, so it looks as if historically the -oex options are also callable
2473 without the leading -o. So we have to accept them. Before the switch,
2474 anything starting -oe has been converted to -e. Exim does not support all
2475 of the sendmail error options. */
2478 if (Ustrcmp(argrest
, "e") == 0)
2480 arg_error_handling
= ERRORS_SENDER
;
2481 errors_sender_rc
= EXIT_SUCCESS
;
2483 else if (Ustrcmp(argrest
, "m") == 0) arg_error_handling
= ERRORS_SENDER
;
2484 else if (Ustrcmp(argrest
, "p") == 0) arg_error_handling
= ERRORS_STDERR
;
2485 else if (Ustrcmp(argrest
, "q") == 0) arg_error_handling
= ERRORS_STDERR
;
2486 else if (Ustrcmp(argrest
, "w") == 0) arg_error_handling
= ERRORS_SENDER
;
2491 /* -F: Set sender's full name, used instead of the gecos entry from
2492 the password file. Since users can usually alter their gecos entries,
2493 there's no security involved in using this instead. The data can follow
2494 the -F or be in the next argument. */
2499 if(++i
< argc
) argrest
= argv
[i
]; else
2500 { badarg
= TRUE
; break; }
2502 originator_name
= argrest
;
2503 sender_name_forced
= TRUE
;
2507 /* -f: Set sender's address - this value is only actually used if Exim is
2508 run by a trusted user, or if untrusted_set_sender is set and matches the
2509 address, except that the null address can always be set by any user. The
2510 test for this happens later, when the value given here is ignored when not
2511 permitted. For an untrusted user, the actual sender is still put in Sender:
2512 if it doesn't match the From: header (unless no_local_from_check is set).
2513 The data can follow the -f or be in the next argument. The -r switch is an
2514 obsolete form of -f but since there appear to be programs out there that
2515 use anything that sendmail has ever supported, better accept it - the
2516 synonymizing is done before the switch above.
2518 At this stage, we must allow domain literal addresses, because we don't
2519 know what the setting of allow_domain_literals is yet. Ditto for trailing
2520 dots and strip_trailing_dot. */
2524 int dummy_start
, dummy_end
;
2528 if (i
+1 < argc
) argrest
= argv
[++i
]; else
2529 { badarg
= TRUE
; break; }
2532 sender_address
= string_sprintf(""); /* Ensure writeable memory */
2535 uschar
*temp
= argrest
+ Ustrlen(argrest
) - 1;
2536 while (temp
>= argrest
&& isspace(*temp
)) temp
--;
2537 if (temp
>= argrest
&& *temp
== '.') f_end_dot
= TRUE
;
2538 allow_domain_literals
= TRUE
;
2539 strip_trailing_dot
= TRUE
;
2541 allow_utf8_domains
= TRUE
;
2543 sender_address
= parse_extract_address(argrest
, &errmess
,
2544 &dummy_start
, &dummy_end
, &sender_address_domain
, TRUE
);
2546 message_smtputf8
= string_is_utf8(sender_address
);
2547 allow_utf8_domains
= FALSE
;
2549 allow_domain_literals
= FALSE
;
2550 strip_trailing_dot
= FALSE
;
2551 if (sender_address
== NULL
)
2553 fprintf(stderr
, "exim: bad -f address \"%s\": %s\n", argrest
, errmess
);
2554 return EXIT_FAILURE
;
2557 sender_address_forced
= TRUE
;
2561 /* -G: sendmail invocation to specify that it's a gateway submission and
2562 sendmail may complain about problems instead of fixing them.
2563 We make it equivalent to an ACL "control = suppress_local_fixups" and do
2564 not at this time complain about problems. */
2570 /* -h: Set the hop count for an incoming message. Exim does not currently
2571 support this; it always computes it by counting the Received: headers.
2572 To put it in will require a change to the spool header file format. */
2577 if(++i
< argc
) argrest
= argv
[i
]; else
2578 { badarg
= TRUE
; break; }
2580 if (!isdigit(*argrest
)) badarg
= TRUE
;
2584 /* -i: Set flag so dot doesn't end non-SMTP input (same as -oi, seems
2585 not to be documented for sendmail but mailx (at least) uses it) */
2588 if (*argrest
== 0) dot_ends
= FALSE
; else badarg
= TRUE
;
2592 /* -L: set the identifier used for syslog; equivalent to setting
2593 syslog_processname in the config file, but needs to be an admin option. */
2596 if (*argrest
== '\0')
2598 if(++i
< argc
) argrest
= argv
[i
]; else
2599 { badarg
= TRUE
; break; }
2601 sz
= Ustrlen(argrest
);
2604 fprintf(stderr
, "exim: the -L syslog name is too long: \"%s\"\n", argrest
);
2605 return EXIT_FAILURE
;
2609 fprintf(stderr
, "exim: the -L syslog name is too short\n");
2610 return EXIT_FAILURE
;
2612 cmdline_syslog_name
= argrest
;
2616 receiving_message
= FALSE
;
2618 /* -MC: continue delivery of another message via an existing open
2619 file descriptor. This option is used for an internal call by the
2620 smtp transport when there is a pending message waiting to go to an
2621 address to which it has got a connection. Five subsequent arguments are
2622 required: transport name, host name, IP address, sequence number, and
2623 message_id. Transports may decline to create new processes if the sequence
2624 number gets too big. The channel is stdin. This (-MC) must be the last
2625 argument. There's a subsequent check that the real-uid is privileged.
2627 If we are running in the test harness. delay for a bit, to let the process
2628 that set this one up complete. This makes for repeatability of the logging,
2631 if (Ustrcmp(argrest
, "C") == 0)
2633 union sockaddr_46 interface_sock
;
2634 EXIM_SOCKLEN_T size
= sizeof(interface_sock
);
2638 fprintf(stderr
, "exim: too many or too few arguments after -MC\n");
2639 return EXIT_FAILURE
;
2642 if (msg_action_arg
>= 0)
2644 fprintf(stderr
, "exim: incompatible arguments\n");
2645 return EXIT_FAILURE
;
2648 continue_transport
= argv
[++i
];
2649 continue_hostname
= argv
[++i
];
2650 continue_host_address
= argv
[++i
];
2651 continue_sequence
= Uatoi(argv
[++i
]);
2652 msg_action
= MSG_DELIVER
;
2653 msg_action_arg
= ++i
;
2654 forced_delivery
= TRUE
;
2655 queue_run_pid
= passed_qr_pid
;
2656 queue_run_pipe
= passed_qr_pipe
;
2658 if (!mac_ismsgid(argv
[i
]))
2660 fprintf(stderr
, "exim: malformed message id %s after -MC option\n",
2662 return EXIT_FAILURE
;
2665 /* Set up $sending_ip_address and $sending_port, unless proxied */
2667 if (!continue_proxy_cipher
)
2668 if (getsockname(fileno(stdin
), (struct sockaddr
*)(&interface_sock
),
2670 sending_ip_address
= host_ntoa(-1, &interface_sock
, NULL
,
2674 fprintf(stderr
, "exim: getsockname() failed after -MC option: %s\n",
2676 return EXIT_FAILURE
;
2679 if (running_in_test_harness
) millisleep(500);
2683 else if (*argrest
== 'C' && argrest
[1] && !argrest
[2])
2687 /* -MCA: set the smtp_authenticated flag; this is useful only when it
2688 precedes -MC (see above). The flag indicates that the host to which
2689 Exim is connected has accepted an AUTH sequence. */
2691 case 'A': smtp_authenticated
= TRUE
; break;
2693 /* -MCD: set the smtp_use_dsn flag; this indicates that the host
2694 that exim is connected to supports the esmtp extension DSN */
2696 case 'D': smtp_peer_options
|= OPTION_DSN
; break;
2698 /* -MCG: set the queue name, to a non-default value */
2700 case 'G': if (++i
< argc
) queue_name
= string_copy(argv
[i
]);
2704 /* -MCK: the peer offered CHUNKING. Must precede -MC */
2706 case 'K': smtp_peer_options
|= OPTION_CHUNKING
; break;
2708 /* -MCP: set the smtp_use_pipelining flag; this is useful only when
2709 it preceded -MC (see above) */
2711 case 'P': smtp_peer_options
|= OPTION_PIPE
; break;
2713 /* -MCQ: pass on the pid of the queue-running process that started
2714 this chain of deliveries and the fd of its synchronizing pipe; this
2715 is useful only when it precedes -MC (see above) */
2717 case 'Q': if (++i
< argc
) passed_qr_pid
= (pid_t
)(Uatol(argv
[i
]));
2719 if (++i
< argc
) passed_qr_pipe
= (int)(Uatol(argv
[i
]));
2723 /* -MCS: set the smtp_use_size flag; this is useful only when it
2724 precedes -MC (see above) */
2726 case 'S': smtp_peer_options
|= OPTION_SIZE
; break;
2729 /* -MCt: similar to -MCT below but the connection is still open
2730 via a proxy proces which handles the TLS context and coding.
2731 Require three arguments for the proxied local address and port,
2732 and the TLS cipher. */
2734 case 't': if (++i
< argc
) sending_ip_address
= argv
[i
];
2736 if (++i
< argc
) sending_port
= (int)(Uatol(argv
[i
]));
2738 if (++i
< argc
) continue_proxy_cipher
= argv
[i
];
2742 /* -MCT: set the tls_offered flag; this is useful only when it
2743 precedes -MC (see above). The flag indicates that the host to which
2744 Exim is connected has offered TLS support. */
2746 case 'T': smtp_peer_options
|= OPTION_TLS
; break;
2749 default: badarg
= TRUE
; break;
2754 /* -M[x]: various operations on the following list of message ids:
2755 -M deliver the messages, ignoring next retry times and thawing
2756 -Mc deliver the messages, checking next retry times, no thawing
2757 -Mf freeze the messages
2758 -Mg give up on the messages
2759 -Mt thaw the messages
2760 -Mrm remove the messages
2761 In the above cases, this must be the last option. There are also the
2762 following options which are followed by a single message id, and which
2763 act on that message. Some of them use the "recipient" addresses as well.
2764 -Mar add recipient(s)
2765 -Mmad mark all recipients delivered
2766 -Mmd mark recipients(s) delivered
2768 -Mset load a message for use with -be
2770 -Mvc show copy (of whole message, in RFC 2822 format)
2775 else if (*argrest
== 0)
2777 msg_action
= MSG_DELIVER
;
2778 forced_delivery
= deliver_force_thaw
= TRUE
;
2780 else if (Ustrcmp(argrest
, "ar") == 0)
2782 msg_action
= MSG_ADD_RECIPIENT
;
2783 one_msg_action
= TRUE
;
2785 else if (Ustrcmp(argrest
, "c") == 0) msg_action
= MSG_DELIVER
;
2786 else if (Ustrcmp(argrest
, "es") == 0)
2788 msg_action
= MSG_EDIT_SENDER
;
2789 one_msg_action
= TRUE
;
2791 else if (Ustrcmp(argrest
, "f") == 0) msg_action
= MSG_FREEZE
;
2792 else if (Ustrcmp(argrest
, "g") == 0)
2794 msg_action
= MSG_DELIVER
;
2795 deliver_give_up
= TRUE
;
2797 else if (Ustrcmp(argrest
, "mad") == 0)
2799 msg_action
= MSG_MARK_ALL_DELIVERED
;
2801 else if (Ustrcmp(argrest
, "md") == 0)
2803 msg_action
= MSG_MARK_DELIVERED
;
2804 one_msg_action
= TRUE
;
2806 else if (Ustrcmp(argrest
, "rm") == 0) msg_action
= MSG_REMOVE
;
2807 else if (Ustrcmp(argrest
, "set") == 0)
2809 msg_action
= MSG_LOAD
;
2810 one_msg_action
= TRUE
;
2812 else if (Ustrcmp(argrest
, "t") == 0) msg_action
= MSG_THAW
;
2813 else if (Ustrcmp(argrest
, "vb") == 0)
2815 msg_action
= MSG_SHOW_BODY
;
2816 one_msg_action
= TRUE
;
2818 else if (Ustrcmp(argrest
, "vc") == 0)
2820 msg_action
= MSG_SHOW_COPY
;
2821 one_msg_action
= TRUE
;
2823 else if (Ustrcmp(argrest
, "vh") == 0)
2825 msg_action
= MSG_SHOW_HEADER
;
2826 one_msg_action
= TRUE
;
2828 else if (Ustrcmp(argrest
, "vl") == 0)
2830 msg_action
= MSG_SHOW_LOG
;
2831 one_msg_action
= TRUE
;
2833 else { badarg
= TRUE
; break; }
2835 /* All the -Mxx options require at least one message id. */
2837 msg_action_arg
= i
+ 1;
2838 if (msg_action_arg
>= argc
)
2840 fprintf(stderr
, "exim: no message ids given after %s option\n", arg
);
2841 return EXIT_FAILURE
;
2844 /* Some require only message ids to follow */
2846 if (!one_msg_action
)
2849 for (j
= msg_action_arg
; j
< argc
; j
++) if (!mac_ismsgid(argv
[j
]))
2851 fprintf(stderr
, "exim: malformed message id %s after %s option\n",
2853 return EXIT_FAILURE
;
2855 goto END_ARG
; /* Remaining args are ids */
2858 /* Others require only one message id, possibly followed by addresses,
2859 which will be handled as normal arguments. */
2863 if (!mac_ismsgid(argv
[msg_action_arg
]))
2865 fprintf(stderr
, "exim: malformed message id %s after %s option\n",
2866 argv
[msg_action_arg
], arg
);
2867 return EXIT_FAILURE
;
2874 /* Some programs seem to call the -om option without the leading o;
2875 for sendmail it askes for "me too". Exim always does this. */
2878 if (*argrest
!= 0) badarg
= TRUE
;
2882 /* -N: don't do delivery - a debugging option that stops transports doing
2883 their thing. It implies debugging at the D_v level. */
2888 dont_deliver
= TRUE
;
2889 debug_selector
|= D_v
;
2890 debug_file
= stderr
;
2896 /* -n: This means "don't alias" in sendmail, apparently.
2897 For normal invocations, it has no effect.
2898 It may affect some other options. */
2904 /* -O: Just ignore it. In sendmail, apparently -O option=value means set
2905 option to the specified value. This form uses long names. We need to handle
2906 -O option=value and -Ooption=value. */
2913 fprintf(stderr
, "exim: string expected after -O\n");
2921 /* -oA: Set an argument for the bi command (sendmail's "alternate alias
2924 if (*argrest
== 'A')
2926 alias_arg
= argrest
+ 1;
2927 if (alias_arg
[0] == 0)
2929 if (i
+1 < argc
) alias_arg
= argv
[++i
]; else
2931 fprintf(stderr
, "exim: string expected after -oA\n");
2937 /* -oB: Set a connection message max value for remote deliveries */
2939 else if (*argrest
== 'B')
2941 uschar
*p
= argrest
+ 1;
2944 if (i
+1 < argc
&& isdigit((argv
[i
+1][0]))) p
= argv
[++i
]; else
2946 connection_max_messages
= 1;
2955 fprintf(stderr
, "exim: number expected after -oB\n");
2958 connection_max_messages
= Uatoi(p
);
2962 /* -odb: background delivery */
2964 else if (Ustrcmp(argrest
, "db") == 0)
2966 synchronous_delivery
= FALSE
;
2967 arg_queue_only
= FALSE
;
2968 queue_only_set
= TRUE
;
2971 /* -odf: foreground delivery (smail-compatible option); same effect as
2972 -odi: interactive (synchronous) delivery (sendmail-compatible option)
2975 else if (Ustrcmp(argrest
, "df") == 0 || Ustrcmp(argrest
, "di") == 0)
2977 synchronous_delivery
= TRUE
;
2978 arg_queue_only
= FALSE
;
2979 queue_only_set
= TRUE
;
2982 /* -odq: queue only */
2984 else if (Ustrcmp(argrest
, "dq") == 0)
2986 synchronous_delivery
= FALSE
;
2987 arg_queue_only
= TRUE
;
2988 queue_only_set
= TRUE
;
2991 /* -odqs: queue SMTP only - do local deliveries and remote routing,
2992 but no remote delivery */
2994 else if (Ustrcmp(argrest
, "dqs") == 0)
2997 arg_queue_only
= FALSE
;
2998 queue_only_set
= TRUE
;
3001 /* -oex: Sendmail error flags. As these are also accepted without the
3002 leading -o prefix, for compatibility with vacation and other callers,
3003 they are handled with -e above. */
3005 /* -oi: Set flag so dot doesn't end non-SMTP input (same as -i)
3006 -oitrue: Another sendmail syntax for the same */
3008 else if (Ustrcmp(argrest
, "i") == 0 ||
3009 Ustrcmp(argrest
, "itrue") == 0)
3012 /* -oM*: Set various characteristics for an incoming message; actually
3013 acted on for trusted callers only. */
3015 else if (*argrest
== 'M')
3019 fprintf(stderr
, "exim: data expected after -o%s\n", argrest
);
3023 /* -oMa: Set sender host address */
3025 if (Ustrcmp(argrest
, "Ma") == 0) sender_host_address
= argv
[++i
];
3027 /* -oMaa: Set authenticator name */
3029 else if (Ustrcmp(argrest
, "Maa") == 0)
3030 sender_host_authenticated
= argv
[++i
];
3032 /* -oMas: setting authenticated sender */
3034 else if (Ustrcmp(argrest
, "Mas") == 0) authenticated_sender
= argv
[++i
];
3036 /* -oMai: setting authenticated id */
3038 else if (Ustrcmp(argrest
, "Mai") == 0) authenticated_id
= argv
[++i
];
3040 /* -oMi: Set incoming interface address */
3042 else if (Ustrcmp(argrest
, "Mi") == 0) interface_address
= argv
[++i
];
3044 /* -oMm: Message reference */
3046 else if (Ustrcmp(argrest
, "Mm") == 0)
3048 if (!mac_ismsgid(argv
[i
+1]))
3050 fprintf(stderr
,"-oMm must be a valid message ID\n");
3053 if (!trusted_config
)
3055 fprintf(stderr
,"-oMm must be called by a trusted user/config\n");
3058 message_reference
= argv
[++i
];
3061 /* -oMr: Received protocol */
3063 else if (Ustrcmp(argrest
, "Mr") == 0)
3065 if (received_protocol
)
3067 fprintf(stderr
, "received_protocol is set already\n");
3070 else received_protocol
= argv
[++i
];
3072 /* -oMs: Set sender host name */
3074 else if (Ustrcmp(argrest
, "Ms") == 0) sender_host_name
= argv
[++i
];
3076 /* -oMt: Set sender ident */
3078 else if (Ustrcmp(argrest
, "Mt") == 0)
3080 sender_ident_set
= TRUE
;
3081 sender_ident
= argv
[++i
];
3084 /* Else a bad argument */
3093 /* -om: Me-too flag for aliases. Exim always does this. Some programs
3094 seem to call this as -m (undocumented), so that is also accepted (see
3097 else if (Ustrcmp(argrest
, "m") == 0) {}
3099 /* -oo: An ancient flag for old-style addresses which still seems to
3100 crop up in some calls (see in SCO). */
3102 else if (Ustrcmp(argrest
, "o") == 0) {}
3104 /* -oP <name>: set pid file path for daemon */
3106 else if (Ustrcmp(argrest
, "P") == 0)
3107 override_pid_file_path
= argv
[++i
];
3109 /* -or <n>: set timeout for non-SMTP acceptance
3110 -os <n>: set timeout for SMTP acceptance */
3112 else if (*argrest
== 'r' || *argrest
== 's')
3114 int *tp
= (*argrest
== 'r')?
3115 &arg_receive_timeout
: &arg_smtp_receive_timeout
;
3116 if (argrest
[1] == 0)
3118 if (i
+1 < argc
) *tp
= readconf_readtime(argv
[++i
], 0, FALSE
);
3120 else *tp
= readconf_readtime(argrest
+ 1, 0, FALSE
);
3123 fprintf(stderr
, "exim: bad time value %s: abandoned\n", argv
[i
]);
3128 /* -oX <list>: Override local_interfaces and/or default daemon ports */
3130 else if (Ustrcmp(argrest
, "X") == 0)
3131 override_local_interfaces
= argv
[++i
];
3133 /* Unknown -o argument */
3139 /* -ps: force Perl startup; -pd force delayed Perl startup */
3143 if (*argrest
== 's' && argrest
[1] == 0)
3145 perl_start_option
= 1;
3148 if (*argrest
== 'd' && argrest
[1] == 0)
3150 perl_start_option
= -1;
3155 /* -panythingelse is taken as the Sendmail-compatible argument -prval:sval,
3156 which sets the host protocol and host name */
3160 argrest
= argv
[++i
];
3162 { badarg
= TRUE
; break; }
3168 if (received_protocol
)
3170 fprintf(stderr
, "received_protocol is set already\n");
3174 hn
= Ustrchr(argrest
, ':');
3176 received_protocol
= argrest
;
3179 int old_pool
= store_pool
;
3180 store_pool
= POOL_PERM
;
3181 received_protocol
= string_copyn(argrest
, hn
- argrest
);
3182 store_pool
= old_pool
;
3183 sender_host_name
= hn
+ 1;
3190 receiving_message
= FALSE
;
3191 if (queue_interval
>= 0)
3193 fprintf(stderr
, "exim: -q specified more than once\n");
3197 /* -qq...: Do queue runs in a 2-stage manner */
3199 if (*argrest
== 'q')
3201 queue_2stage
= TRUE
;
3205 /* -qi...: Do only first (initial) deliveries */
3207 if (*argrest
== 'i')
3209 queue_run_first_delivery
= TRUE
;
3213 /* -qf...: Run the queue, forcing deliveries
3214 -qff..: Ditto, forcing thawing as well */
3216 if (*argrest
== 'f')
3218 queue_run_force
= TRUE
;
3219 if (*++argrest
== 'f')
3221 deliver_force_thaw
= TRUE
;
3226 /* -q[f][f]l...: Run the queue only on local deliveries */
3228 if (*argrest
== 'l')
3230 queue_run_local
= TRUE
;
3234 /* -q[f][f][l][G<name>]... Work on the named queue */
3236 if (*argrest
== 'G')
3239 for (argrest
++, i
= 0; argrest
[i
] && argrest
[i
] != '/'; ) i
++;
3240 queue_name
= string_copyn(argrest
, i
);
3242 if (*argrest
== '/') argrest
++;
3245 /* -q[f][f][l][G<name>]: Run the queue, optionally forced, optionally local
3246 only, optionally named, optionally starting from a given message id. */
3248 if (*argrest
== 0 &&
3249 (i
+ 1 >= argc
|| argv
[i
+1][0] == '-' || mac_ismsgid(argv
[i
+1])))
3252 if (i
+1 < argc
&& mac_ismsgid(argv
[i
+1]))
3253 start_queue_run_id
= argv
[++i
];
3254 if (i
+1 < argc
&& mac_ismsgid(argv
[i
+1]))
3255 stop_queue_run_id
= argv
[++i
];
3258 /* -q[f][f][l][G<name>/]<n>: Run the queue at regular intervals, optionally
3259 forced, optionally local only, optionally named. */
3261 else if ((queue_interval
= readconf_readtime(*argrest
? argrest
: argv
[++i
],
3264 fprintf(stderr
, "exim: bad time value %s: abandoned\n", argv
[i
]);
3270 case 'R': /* Synonymous with -qR... */
3271 receiving_message
= FALSE
;
3273 /* -Rf: As -R (below) but force all deliveries,
3274 -Rff: Ditto, but also thaw all frozen messages,
3275 -Rr: String is regex
3276 -Rrf: Regex and force
3277 -Rrff: Regex and force and thaw
3279 in all cases provided there are no further characters in this
3285 for (i
= 0; i
< nelem(rsopts
); i
++)
3286 if (Ustrcmp(argrest
, rsopts
[i
]) == 0)
3288 if (i
!= 2) queue_run_force
= TRUE
;
3289 if (i
>= 2) deliver_selectstring_regex
= TRUE
;
3290 if (i
== 1 || i
== 4) deliver_force_thaw
= TRUE
;
3291 argrest
+= Ustrlen(rsopts
[i
]);
3295 /* -R: Set string to match in addresses for forced queue run to
3296 pick out particular messages. */
3299 deliver_selectstring
= argrest
;
3300 else if (i
+1 < argc
)
3301 deliver_selectstring
= argv
[++i
];
3304 fprintf(stderr
, "exim: string expected after -R\n");
3310 /* -r: an obsolete synonym for -f (see above) */
3313 /* -S: Like -R but works on sender. */
3315 case 'S': /* Synonymous with -qS... */
3316 receiving_message
= FALSE
;
3318 /* -Sf: As -S (below) but force all deliveries,
3319 -Sff: Ditto, but also thaw all frozen messages,
3320 -Sr: String is regex
3321 -Srf: Regex and force
3322 -Srff: Regex and force and thaw
3324 in all cases provided there are no further characters in this
3330 for (i
= 0; i
< nelem(rsopts
); i
++)
3331 if (Ustrcmp(argrest
, rsopts
[i
]) == 0)
3333 if (i
!= 2) queue_run_force
= TRUE
;
3334 if (i
>= 2) deliver_selectstring_sender_regex
= TRUE
;
3335 if (i
== 1 || i
== 4) deliver_force_thaw
= TRUE
;
3336 argrest
+= Ustrlen(rsopts
[i
]);
3340 /* -S: Set string to match in addresses for forced queue run to
3341 pick out particular messages. */
3344 deliver_selectstring_sender
= argrest
;
3345 else if (i
+1 < argc
)
3346 deliver_selectstring_sender
= argv
[++i
];
3349 fprintf(stderr
, "exim: string expected after -S\n");
3354 /* -Tqt is an option that is exclusively for use by the testing suite.
3355 It is not recognized in other circumstances. It allows for the setting up
3356 of explicit "queue times" so that various warning/retry things can be
3357 tested. Otherwise variability of clock ticks etc. cause problems. */
3360 if (running_in_test_harness
&& Ustrcmp(argrest
, "qt") == 0)
3361 fudged_queue_times
= argv
[++i
];
3366 /* -t: Set flag to extract recipients from body of message. */
3369 if (*argrest
== 0) extract_recipients
= TRUE
;
3371 /* -ti: Set flag to extract recipients from body of message, and also
3372 specify that dot does not end the message. */
3374 else if (Ustrcmp(argrest
, "i") == 0)
3376 extract_recipients
= TRUE
;
3380 /* -tls-on-connect: don't wait for STARTTLS (for old clients) */
3383 else if (Ustrcmp(argrest
, "ls-on-connect") == 0) tls_in
.on_connect
= TRUE
;
3390 /* -U: This means "initial user submission" in sendmail, apparently. The
3391 doc claims that in future sendmail may refuse syntactically invalid
3392 messages instead of fixing them. For the moment, we just ignore it. */
3398 /* -v: verify things - this is a very low-level debugging */
3403 debug_selector
|= D_v
;
3404 debug_file
= stderr
;
3410 /* -x: AIX uses this to indicate some fancy 8-bit character stuff:
3412 The -x flag tells the sendmail command that mail from a local
3413 mail program has National Language Support (NLS) extended characters
3414 in the body of the mail item. The sendmail command can send mail with
3415 extended NLS characters across networks that normally corrupts these
3418 As Exim is 8-bit clean, it just ignores this flag. */
3421 if (*argrest
!= 0) badarg
= TRUE
;
3424 /* -X: in sendmail: takes one parameter, logfile, and sends debugging
3425 logs to that file. We swallow the parameter and otherwise ignore it. */
3428 if (*argrest
== '\0')
3431 fprintf(stderr
, "exim: string expected after -X\n");
3437 if (*argrest
== '\0')
3438 if (++i
< argc
) log_oneline
= argv
[i
]; else
3440 fprintf(stderr
, "exim: file name expected after %s\n", argv
[i
-1]);
3445 /* All other initial characters are errors */
3450 } /* End of high-level switch statement */
3452 /* Failed to recognize the option, or syntax error */
3456 fprintf(stderr
, "exim abandoned: unknown, malformed, or incomplete "
3457 "option %s\n", arg
);
3463 /* If -R or -S have been specified without -q, assume a single queue run. */
3465 if ( (deliver_selectstring
|| deliver_selectstring_sender
)
3466 && queue_interval
< 0)
3471 /* If usage_wanted is set we call the usage function - which never returns */
3472 if (usage_wanted
) exim_usage(called_as
);
3474 /* Arguments have been processed. Check for incompatibilities. */
3476 (smtp_input
|| extract_recipients
|| recipients_arg
< argc
) &&
3477 (daemon_listen
|| queue_interval
>= 0 || bi_option
||
3478 test_retry_arg
>= 0 || test_rewrite_arg
>= 0 ||
3479 filter_test
!= FTEST_NONE
|| (msg_action_arg
> 0 && !one_msg_action
))
3482 msg_action_arg
> 0 &&
3483 (daemon_listen
|| queue_interval
> 0 || list_options
||
3484 (checking
&& msg_action
!= MSG_LOAD
) ||
3485 bi_option
|| test_retry_arg
>= 0 || test_rewrite_arg
>= 0)
3488 (daemon_listen
|| queue_interval
> 0) &&
3489 (sender_address
!= NULL
|| list_options
|| list_queue
|| checking
||
3493 daemon_listen
&& queue_interval
== 0
3496 inetd_wait_mode
&& queue_interval
>= 0
3500 (checking
|| smtp_input
|| extract_recipients
||
3501 filter_test
!= FTEST_NONE
|| bi_option
)
3504 verify_address_mode
&&
3505 (address_test_mode
|| smtp_input
|| extract_recipients
||
3506 filter_test
!= FTEST_NONE
|| bi_option
)
3509 address_test_mode
&& (smtp_input
|| extract_recipients
||
3510 filter_test
!= FTEST_NONE
|| bi_option
)
3513 smtp_input
&& (sender_address
!= NULL
|| filter_test
!= FTEST_NONE
||
3517 deliver_selectstring
!= NULL
&& queue_interval
< 0
3520 msg_action
== MSG_LOAD
&&
3521 (!expansion_test
|| expansion_test_message
!= NULL
)
3525 fprintf(stderr
, "exim: incompatible command-line options or arguments\n");
3529 /* If debugging is set up, set the file and the file descriptor to pass on to
3530 child processes. It should, of course, be 2 for stderr. Also, force the daemon
3531 to run in the foreground. */
3533 if (debug_selector
!= 0)
3535 debug_file
= stderr
;
3536 debug_fd
= fileno(debug_file
);
3537 background_daemon
= FALSE
;
3538 if (running_in_test_harness
) millisleep(100); /* lets caller finish */
3539 if (debug_selector
!= D_v
) /* -v only doesn't show this */
3541 debug_printf("Exim version %s uid=%ld gid=%ld pid=%d D=%x\n",
3542 version_string
, (long int)real_uid
, (long int)real_gid
, (int)getpid(),
3544 if (!version_printed
)
3545 show_whats_supported(stderr
);
3549 /* When started with root privilege, ensure that the limits on the number of
3550 open files and the number of processes (where that is accessible) are
3551 sufficiently large, or are unset, in case Exim has been called from an
3552 environment where the limits are screwed down. Not all OS have the ability to
3553 change some of these limits. */
3557 DEBUG(D_any
) debug_print_ids(US
"Exim has no root privilege:");
3563 #ifdef RLIMIT_NOFILE
3564 if (getrlimit(RLIMIT_NOFILE
, &rlp
) < 0)
3566 log_write(0, LOG_MAIN
|LOG_PANIC
, "getrlimit(RLIMIT_NOFILE) failed: %s",
3568 rlp
.rlim_cur
= rlp
.rlim_max
= 0;
3571 /* I originally chose 1000 as a nice big number that was unlikely to
3572 be exceeded. It turns out that some older OS have a fixed upper limit of
3575 if (rlp
.rlim_cur
< 1000)
3577 rlp
.rlim_cur
= rlp
.rlim_max
= 1000;
3578 if (setrlimit(RLIMIT_NOFILE
, &rlp
) < 0)
3580 rlp
.rlim_cur
= rlp
.rlim_max
= 256;
3581 if (setrlimit(RLIMIT_NOFILE
, &rlp
) < 0)
3582 log_write(0, LOG_MAIN
|LOG_PANIC
, "setrlimit(RLIMIT_NOFILE) failed: %s",
3589 if (getrlimit(RLIMIT_NPROC
, &rlp
) < 0)
3591 log_write(0, LOG_MAIN
|LOG_PANIC
, "getrlimit(RLIMIT_NPROC) failed: %s",
3593 rlp
.rlim_cur
= rlp
.rlim_max
= 0;
3596 #ifdef RLIM_INFINITY
3597 if (rlp
.rlim_cur
!= RLIM_INFINITY
&& rlp
.rlim_cur
< 1000)
3599 rlp
.rlim_cur
= rlp
.rlim_max
= RLIM_INFINITY
;
3601 if (rlp
.rlim_cur
< 1000)
3603 rlp
.rlim_cur
= rlp
.rlim_max
= 1000;
3605 if (setrlimit(RLIMIT_NPROC
, &rlp
) < 0)
3606 log_write(0, LOG_MAIN
|LOG_PANIC
, "setrlimit(RLIMIT_NPROC) failed: %s",
3612 /* Exim is normally entered as root (but some special configurations are
3613 possible that don't do this). However, it always spins off sub-processes that
3614 set their uid and gid as required for local delivery. We don't want to pass on
3615 any extra groups that root may belong to, so we want to get rid of them all at
3618 We need to obey setgroups() at this stage, before possibly giving up root
3619 privilege for a changed configuration file, but later on we might need to
3620 check on the additional groups for the admin user privilege - can't do that
3621 till after reading the config, which might specify the exim gid. Therefore,
3622 save the group list here first. */
3624 group_count
= getgroups(NGROUPS_MAX
, group_list
);
3625 if (group_count
< 0)
3627 fprintf(stderr
, "exim: getgroups() failed: %s\n", strerror(errno
));
3631 /* There is a fundamental difference in some BSD systems in the matter of
3632 groups. FreeBSD and BSDI are known to be different; NetBSD and OpenBSD are
3633 known not to be different. On the "different" systems there is a single group
3634 list, and the first entry in it is the current group. On all other versions of
3635 Unix there is a supplementary group list, which is in *addition* to the current
3636 group. Consequently, to get rid of all extraneous groups on a "standard" system
3637 you pass over 0 groups to setgroups(), while on a "different" system you pass
3638 over a single group - the current group, which is always the first group in the
3639 list. Calling setgroups() with zero groups on a "different" system results in
3640 an error return. The following code should cope with both types of system.
3642 However, if this process isn't running as root, setgroups() can't be used
3643 since you have to be root to run it, even if throwing away groups. Not being
3644 root here happens only in some unusual configurations. We just ignore the
3647 if (setgroups(0, NULL
) != 0)
3649 if (setgroups(1, group_list
) != 0 && !unprivileged
)
3651 fprintf(stderr
, "exim: setgroups() failed: %s\n", strerror(errno
));
3656 /* If the configuration file name has been altered by an argument on the
3657 command line (either a new file name or a macro definition) and the caller is
3658 not root, or if this is a filter testing run, remove any setuid privilege the
3659 program has and run as the underlying user.
3661 The exim user is locked out of this, which severely restricts the use of -C
3664 Otherwise, set the real ids to the effective values (should be root unless run
3665 from inetd, which it can either be root or the exim uid, if one is configured).
3667 There is a private mechanism for bypassing some of this, in order to make it
3668 possible to test lots of configurations automatically, without having either to
3669 recompile each time, or to patch in an actual configuration file name and other
3670 values (such as the path name). If running in the test harness, pretend that
3671 configuration file changes and macro definitions haven't happened. */
3674 (!trusted_config
|| /* Config changed, or */
3675 !macros_trusted(opt_D_used
)) && /* impermissible macros and */
3676 real_uid
!= root_uid
&& /* Not root, and */
3677 !running_in_test_harness
/* Not fudged */
3679 expansion_test
/* expansion testing */
3681 filter_test
!= FTEST_NONE
) /* Filter testing */
3683 setgroups(group_count
, group_list
);
3684 exim_setugid(real_uid
, real_gid
, FALSE
,
3685 US
"-C, -D, -be or -bf forces real uid");
3686 removed_privilege
= TRUE
;
3688 /* In the normal case when Exim is called like this, stderr is available
3689 and should be used for any logging information because attempts to write
3690 to the log will usually fail. To arrange this, we unset really_exim. However,
3691 if no stderr is available there is no point - we might as well have a go
3692 at the log (if it fails, syslog will be written).
3694 Note that if the invoker is Exim, the logs remain available. Messing with
3695 this causes unlogged successful deliveries. */
3697 if ((log_stderr
!= NULL
) && (real_uid
!= exim_uid
))
3698 really_exim
= FALSE
;
3701 /* Privilege is to be retained for the moment. It may be dropped later,
3702 depending on the job that this Exim process has been asked to do. For now, set
3703 the real uid to the effective so that subsequent re-execs of Exim are done by a
3706 else exim_setugid(geteuid(), getegid(), FALSE
, US
"forcing real = effective");
3708 /* If testing a filter, open the file(s) now, before wasting time doing other
3709 setups and reading the message. */
3711 if ((filter_test
& FTEST_SYSTEM
) != 0)
3713 filter_sfd
= Uopen(filter_test_sfile
, O_RDONLY
, 0);
3716 fprintf(stderr
, "exim: failed to open %s: %s\n", filter_test_sfile
,
3718 return EXIT_FAILURE
;
3722 if ((filter_test
& FTEST_USER
) != 0)
3724 filter_ufd
= Uopen(filter_test_ufile
, O_RDONLY
, 0);
3727 fprintf(stderr
, "exim: failed to open %s: %s\n", filter_test_ufile
,
3729 return EXIT_FAILURE
;
3733 /* Initialise lookup_list
3734 If debugging, already called above via version reporting.
3735 In either case, we initialise the list of available lookups while running
3736 as root. All dynamically modules are loaded from a directory which is
3737 hard-coded into the binary and is code which, if not a module, would be
3738 part of Exim already. Ability to modify the content of the directory
3739 is equivalent to the ability to modify a setuid binary!
3741 This needs to happen before we read the main configuration. */
3745 if (running_in_test_harness
) smtputf8_advertise_hosts
= NULL
;
3748 /* Read the main runtime configuration data; this gives up if there
3749 is a failure. It leaves the configuration file open so that the subsequent
3750 configuration data for delivery can be read if needed.
3752 NOTE: immediatly after opening the configuration file we change the working
3753 directory to "/"! Later we change to $spool_directory. We do it there, because
3754 during readconf_main() some expansion takes place already. */
3756 /* Store the initial cwd before we change directories. Can be NULL if the
3757 dir has already been unlinked. */
3758 initial_cwd
= os_getcwd(NULL
, 0);
3761 -be[m] expansion test -
3762 -b[fF] filter test new
3764 -bmalware malware_test_file new
3766 -brw rewrite test new
3768 -bv[s] address verify -
3770 -bP <option> (except -bP config, which sets list_config)
3772 If any of these options is set, we suppress warnings about configuration
3773 issues (currently about tls_advertise_hosts and keep_environment not being
3776 readconf_main(checking
|| list_options
);
3778 if (builtin_macros_create_trigger
) DEBUG(D_any
)
3779 debug_printf("Builtin macros created (expensive) due to config line '%.*s'\n",
3780 Ustrlen(builtin_macros_create_trigger
)-1, builtin_macros_create_trigger
);
3782 /* Now in directory "/" */
3784 if (cleanup_environment() == FALSE
)
3785 log_write(0, LOG_PANIC_DIE
, "Can't cleanup environment");
3788 /* If an action on specific messages is requested, or if a daemon or queue
3789 runner is being started, we need to know if Exim was called by an admin user.
3790 This is the case if the real user is root or exim, or if the real group is
3791 exim, or if one of the supplementary groups is exim or a group listed in
3792 admin_groups. We don't fail all message actions immediately if not admin_user,
3793 since some actions can be performed by non-admin users. Instead, set admin_user
3794 for later interrogation. */
3796 if (real_uid
== root_uid
|| real_uid
== exim_uid
|| real_gid
== exim_gid
)
3801 for (i
= 0; i
< group_count
&& !admin_user
; i
++)
3802 if (group_list
[i
] == exim_gid
)
3804 else if (admin_groups
)
3805 for (j
= 1; j
<= (int)admin_groups
[0] && !admin_user
; j
++)
3806 if (admin_groups
[j
] == group_list
[i
])
3810 /* Another group of privileged users are the trusted users. These are root,
3811 exim, and any caller matching trusted_users or trusted_groups. Trusted callers
3812 are permitted to specify sender_addresses with -f on the command line, and
3813 other message parameters as well. */
3815 if (real_uid
== root_uid
|| real_uid
== exim_uid
)
3816 trusted_caller
= TRUE
;
3822 for (i
= 1; i
<= (int)trusted_users
[0] && !trusted_caller
; i
++)
3823 if (trusted_users
[i
] == real_uid
)
3824 trusted_caller
= TRUE
;
3827 for (i
= 1; i
<= (int)trusted_groups
[0] && !trusted_caller
; i
++)
3828 if (trusted_groups
[i
] == real_gid
)
3829 trusted_caller
= TRUE
;
3830 else for (j
= 0; j
< group_count
&& !trusted_caller
; j
++)
3831 if (trusted_groups
[i
] == group_list
[j
])
3832 trusted_caller
= TRUE
;
3835 /* At this point, we know if the user is privileged and some command-line
3836 options become possibly impermissible, depending upon the configuration file. */
3838 if (checking
&& commandline_checks_require_admin
&& !admin_user
) {
3839 fprintf(stderr
, "exim: those command-line flags are set to require admin\n");
3843 /* Handle the decoding of logging options. */
3845 decode_bits(log_selector
, log_selector_size
, log_notall
,
3846 log_selector_string
, log_options
, log_options_count
, US
"log", 0);
3851 debug_printf("configuration file is %s\n", config_main_filename
);
3852 debug_printf("log selectors =");
3853 for (i
= 0; i
< log_selector_size
; i
++)
3854 debug_printf(" %08x", log_selector
[i
]);
3858 /* If domain literals are not allowed, check the sender address that was
3859 supplied with -f. Ditto for a stripped trailing dot. */
3861 if (sender_address
!= NULL
)
3863 if (sender_address
[sender_address_domain
] == '[' && !allow_domain_literals
)
3865 fprintf(stderr
, "exim: bad -f address \"%s\": domain literals not "
3866 "allowed\n", sender_address
);
3867 return EXIT_FAILURE
;
3869 if (f_end_dot
&& !strip_trailing_dot
)
3871 fprintf(stderr
, "exim: bad -f address \"%s.\": domain is malformed "
3872 "(trailing dot not allowed)\n", sender_address
);
3873 return EXIT_FAILURE
;
3877 /* See if an admin user overrode our logging. */
3879 if (cmdline_syslog_name
!= NULL
)
3883 syslog_processname
= cmdline_syslog_name
;
3884 log_file_path
= string_copy(CUS
"syslog");
3888 /* not a panic, non-privileged users should not be able to spam paniclog */
3890 "exim: you lack sufficient privilege to specify syslog process name\n");
3891 return EXIT_FAILURE
;
3895 /* Paranoia check of maximum lengths of certain strings. There is a check
3896 on the length of the log file path in log.c, which will come into effect
3897 if there are any calls to write the log earlier than this. However, if we
3898 get this far but the string is very long, it is better to stop now than to
3899 carry on and (e.g.) receive a message and then have to collapse. The call to
3900 log_write() from here will cause the ultimate panic collapse if the complete
3901 file name exceeds the buffer length. */
3903 if (Ustrlen(log_file_path
) > 200)
3904 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
3905 "log_file_path is longer than 200 chars: aborting");
3907 if (Ustrlen(pid_file_path
) > 200)
3908 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
3909 "pid_file_path is longer than 200 chars: aborting");
3911 if (Ustrlen(spool_directory
) > 200)
3912 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
3913 "spool_directory is longer than 200 chars: aborting");
3915 /* Length check on the process name given to syslog for its TAG field,
3916 which is only permitted to be 32 characters or less. See RFC 3164. */
3918 if (Ustrlen(syslog_processname
) > 32)
3919 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
,
3920 "syslog_processname is longer than 32 chars: aborting");
3925 log_write(0, LOG_MAIN
, "%s", log_oneline
);
3926 return EXIT_SUCCESS
;
3929 return EXIT_FAILURE
;
3931 /* In some operating systems, the environment variable TMPDIR controls where
3932 temporary files are created; Exim doesn't use these (apart from when delivering
3933 to MBX mailboxes), but called libraries such as DBM libraries may require them.
3934 If TMPDIR is found in the environment, reset it to the value defined in the
3935 EXIM_TMPDIR macro, if this macro is defined. For backward compatibility this
3936 macro may be called TMPDIR in old "Local/Makefile"s. It's converted to
3937 EXIM_TMPDIR by the build scripts.
3943 if (environ
) for (p
= USS environ
; *p
; p
++)
3944 if (Ustrncmp(*p
, "TMPDIR=", 7) == 0 && Ustrcmp(*p
+7, EXIM_TMPDIR
) != 0)
3946 uschar
* newp
= store_malloc(Ustrlen(EXIM_TMPDIR
) + 8);
3947 sprintf(CS newp
, "TMPDIR=%s", EXIM_TMPDIR
);
3949 DEBUG(D_any
) debug_printf("reset TMPDIR=%s in environment\n", EXIM_TMPDIR
);
3954 /* Timezone handling. If timezone_string is "utc", set a flag to cause all
3955 timestamps to be in UTC (gmtime() is used instead of localtime()). Otherwise,
3956 we may need to get rid of a bogus timezone setting. This can arise when Exim is
3957 called by a user who has set the TZ variable. This then affects the timestamps
3958 in log files and in Received: headers, and any created Date: header lines. The
3959 required timezone is settable in the configuration file, so nothing can be done
3960 about this earlier - but hopefully nothing will normally be logged earlier than
3961 this. We have to make a new environment if TZ is wrong, but don't bother if
3962 timestamps_utc is set, because then all times are in UTC anyway. */
3964 if (timezone_string
&& strcmpic(timezone_string
, US
"UTC") == 0)
3965 timestamps_utc
= TRUE
;
3968 uschar
*envtz
= US
getenv("TZ");
3970 ? !timezone_string
|| Ustrcmp(timezone_string
, envtz
) != 0
3971 : timezone_string
!= NULL
3974 uschar
**p
= USS environ
;
3978 if (environ
) while (*p
++) count
++;
3979 if (!envtz
) count
++;
3980 newp
= new = store_malloc(sizeof(uschar
*) * (count
+ 1));
3981 if (environ
) for (p
= USS environ
; *p
; p
++)
3982 if (Ustrncmp(*p
, "TZ=", 3) != 0) *newp
++ = *p
;
3983 if (timezone_string
)
3985 *newp
= store_malloc(Ustrlen(timezone_string
) + 4);
3986 sprintf(CS
*newp
++, "TZ=%s", timezone_string
);
3991 DEBUG(D_any
) debug_printf("Reset TZ to %s: time is %s\n", timezone_string
,
3992 tod_stamp(tod_log
));
3996 /* Handle the case when we have removed the setuid privilege because of -C or
3997 -D. This means that the caller of Exim was not root.
3999 There is a problem if we were running as the Exim user. The sysadmin may
4000 expect this case to retain privilege because "the binary was called by the
4001 Exim user", but it hasn't, because either the -D option set macros, or the
4002 -C option set a non-trusted configuration file. There are two possibilities:
4004 (1) If deliver_drop_privilege is set, Exim is not going to re-exec in order
4005 to do message deliveries. Thus, the fact that it is running as a
4006 non-privileged user is plausible, and might be wanted in some special
4007 configurations. However, really_exim will have been set false when
4008 privilege was dropped, to stop Exim trying to write to its normal log
4009 files. Therefore, re-enable normal log processing, assuming the sysadmin
4010 has set up the log directory correctly.
4012 (2) If deliver_drop_privilege is not set, the configuration won't work as
4013 apparently intended, and so we log a panic message. In order to retain
4014 root for -C or -D, the caller must either be root or be invoking a
4015 trusted configuration file (when deliver_drop_privilege is false). */
4017 if ( removed_privilege
4018 && (!trusted_config
|| opt_D_used
)
4019 && real_uid
== exim_uid
)
4020 if (deliver_drop_privilege
)
4021 really_exim
= TRUE
; /* let logging work normally */
4023 log_write(0, LOG_MAIN
|LOG_PANIC
,
4024 "exim user lost privilege for using %s option",
4025 trusted_config
? "-D" : "-C");
4027 /* Start up Perl interpreter if Perl support is configured and there is a
4028 perl_startup option, and the configuration or the command line specifies
4029 initializing starting. Note that the global variables are actually called
4030 opt_perl_xxx to avoid clashing with perl's namespace (perl_*). */
4033 if (perl_start_option
!= 0)
4034 opt_perl_at_start
= (perl_start_option
> 0);
4035 if (opt_perl_at_start
&& opt_perl_startup
!= NULL
)
4038 DEBUG(D_any
) debug_printf("Starting Perl interpreter\n");
4039 errstr
= init_perl(opt_perl_startup
);
4042 fprintf(stderr
, "exim: error in perl_startup code: %s\n", errstr
);
4043 return EXIT_FAILURE
;
4045 opt_perl_started
= TRUE
;
4047 #endif /* EXIM_PERL */
4049 /* Log the arguments of the call if the configuration file said so. This is
4050 a debugging feature for finding out what arguments certain MUAs actually use.
4051 Don't attempt it if logging is disabled, or if listing variables or if
4052 verifying/testing addresses or expansions. */
4054 if (((debug_selector
& D_any
) != 0 || LOGGING(arguments
))
4055 && really_exim
&& !list_options
&& !checking
)
4058 uschar
*p
= big_buffer
;
4059 Ustrcpy(p
, "cwd= (failed)");
4061 Ustrncpy(p
+ 4, initial_cwd
, big_buffer_size
-5);
4064 (void)string_format(p
, big_buffer_size
- (p
- big_buffer
), " %d args:", argc
);
4066 for (i
= 0; i
< argc
; i
++)
4068 int len
= Ustrlen(argv
[i
]);
4069 const uschar
*printing
;
4071 if (p
+ len
+ 8 >= big_buffer
+ big_buffer_size
)
4074 log_write(0, LOG_MAIN
, "%s", big_buffer
);
4075 Ustrcpy(big_buffer
, "...");
4078 printing
= string_printing(argv
[i
]);
4079 if (printing
[0] == 0) quote
= US
"\""; else
4081 const uschar
*pp
= printing
;
4083 while (*pp
!= 0) if (isspace(*pp
++)) { quote
= US
"\""; break; }
4085 p
+= sprintf(CS p
, " %s%.*s%s", quote
, (int)(big_buffer_size
-
4086 (p
- big_buffer
) - 4), printing
, quote
);
4089 if (LOGGING(arguments
))
4090 log_write(0, LOG_MAIN
, "%s", big_buffer
);
4092 debug_printf("%s\n", big_buffer
);
4095 /* Set the working directory to be the top-level spool directory. We don't rely
4096 on this in the code, which always uses fully qualified names, but it's useful
4097 for core dumps etc. Don't complain if it fails - the spool directory might not
4098 be generally accessible and calls with the -C option (and others) have lost
4099 privilege by now. Before the chdir, we try to ensure that the directory exists.
4102 if (Uchdir(spool_directory
) != 0)
4105 (void)directory_make(spool_directory
, US
"", SPOOL_DIRECTORY_MODE
, FALSE
);
4106 dummy
= /* quieten compiler */ Uchdir(spool_directory
);
4107 dummy
= dummy
; /* yet more compiler quietening, sigh */
4110 /* Handle calls with the -bi option. This is a sendmail option to rebuild *the*
4111 alias file. Exim doesn't have such a concept, but this call is screwed into
4112 Sun's YP makefiles. Handle this by calling a configured script, as the real
4113 user who called Exim. The -oA option can be used to pass an argument to the
4118 (void)fclose(config_file
);
4119 if (bi_command
!= NULL
)
4123 argv
[i
++] = bi_command
;
4124 if (alias_arg
!= NULL
) argv
[i
++] = alias_arg
;
4127 setgroups(group_count
, group_list
);
4128 exim_setugid(real_uid
, real_gid
, FALSE
, US
"running bi_command");
4130 DEBUG(D_exec
) debug_printf("exec %.256s %.256s\n", argv
[0],
4131 (argv
[1] == NULL
)? US
"" : argv
[1]);
4133 execv(CS argv
[0], (char *const *)argv
);
4134 fprintf(stderr
, "exim: exec failed: %s\n", strerror(errno
));
4139 DEBUG(D_any
) debug_printf("-bi used but bi_command not set; exiting\n");
4144 /* We moved the admin/trusted check to be immediately after reading the
4145 configuration file. We leave these prints here to ensure that syslog setup,
4146 logfile setup, and so on has already happened. */
4148 if (trusted_caller
) DEBUG(D_any
) debug_printf("trusted user\n");
4149 if (admin_user
) DEBUG(D_any
) debug_printf("admin user\n");
4151 /* Only an admin user may start the daemon or force a queue run in the default
4152 configuration, but the queue run restriction can be relaxed. Only an admin
4153 user may request that a message be returned to its sender forthwith. Only an
4154 admin user may specify a debug level greater than D_v (because it might show
4155 passwords, etc. in lookup queries). Only an admin user may request a queue
4156 count. Only an admin user can use the test interface to scan for email
4157 (because Exim will be in the spool dir and able to look at mails). */
4161 BOOL debugset
= (debug_selector
& ~D_v
) != 0;
4162 if (deliver_give_up
|| daemon_listen
|| malware_test_file
||
4163 (count_queue
&& queue_list_requires_admin
) ||
4164 (list_queue
&& queue_list_requires_admin
) ||
4165 (queue_interval
>= 0 && prod_requires_admin
) ||
4166 (debugset
&& !running_in_test_harness
))
4168 fprintf(stderr
, "exim:%s permission denied\n", debugset
? " debugging" : "");
4173 /* If the real user is not root or the exim uid, the argument for passing
4174 in an open TCP/IP connection for another message is not permitted, nor is
4175 running with the -N option for any delivery action, unless this call to exim is
4176 one that supplied an input message, or we are using a patched exim for
4177 regression testing. */
4179 if (real_uid
!= root_uid
&& real_uid
!= exim_uid
&&
4180 (continue_hostname
!= NULL
||
4182 (queue_interval
>= 0 || daemon_listen
|| msg_action_arg
> 0)
4183 )) && !running_in_test_harness
)
4185 fprintf(stderr
, "exim: Permission denied\n");
4186 return EXIT_FAILURE
;
4189 /* If the caller is not trusted, certain arguments are ignored when running for
4190 real, but are permitted when checking things (-be, -bv, -bt, -bh, -bf, -bF).
4191 Note that authority for performing certain actions on messages is tested in the
4192 queue_action() function. */
4194 if (!trusted_caller
&& !checking
)
4196 sender_host_name
= sender_host_address
= interface_address
=
4197 sender_ident
= received_protocol
= NULL
;
4198 sender_host_port
= interface_port
= 0;
4199 sender_host_authenticated
= authenticated_sender
= authenticated_id
= NULL
;
4202 /* If a sender host address is set, extract the optional port number off the
4203 end of it and check its syntax. Do the same thing for the interface address.
4204 Exim exits if the syntax is bad. */
4208 if (sender_host_address
!= NULL
)
4209 sender_host_port
= check_port(sender_host_address
);
4210 if (interface_address
!= NULL
)
4211 interface_port
= check_port(interface_address
);
4214 /* If the caller is trusted, then they can use -G to suppress_local_fixups. */
4219 suppress_local_fixups
= suppress_local_fixups_default
= TRUE
;
4220 DEBUG(D_acl
) debug_printf("suppress_local_fixups forced on by -G\n");
4224 fprintf(stderr
, "exim: permission denied (-G requires a trusted user)\n");
4225 return EXIT_FAILURE
;
4229 /* If an SMTP message is being received check to see if the standard input is a
4230 TCP/IP socket. If it is, we assume that Exim was called from inetd if the
4231 caller is root or the Exim user, or if the port is a privileged one. Otherwise,
4236 union sockaddr_46 inetd_sock
;
4237 EXIM_SOCKLEN_T size
= sizeof(inetd_sock
);
4238 if (getpeername(0, (struct sockaddr
*)(&inetd_sock
), &size
) == 0)
4240 int family
= ((struct sockaddr
*)(&inetd_sock
))->sa_family
;
4241 if (family
== AF_INET
|| family
== AF_INET6
)
4243 union sockaddr_46 interface_sock
;
4244 size
= sizeof(interface_sock
);
4246 if (getsockname(0, (struct sockaddr
*)(&interface_sock
), &size
) == 0)
4247 interface_address
= host_ntoa(-1, &interface_sock
, NULL
,
4250 if (host_is_tls_on_connect_port(interface_port
)) tls_in
.on_connect
= TRUE
;
4252 if (real_uid
== root_uid
|| real_uid
== exim_uid
|| interface_port
< 1024)
4255 sender_host_address
= host_ntoa(-1, (struct sockaddr
*)(&inetd_sock
),
4256 NULL
, &sender_host_port
);
4257 if (mua_wrapper
) log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Input from "
4258 "inetd is not supported when mua_wrapper is set");
4263 "exim: Permission denied (unprivileged user, unprivileged port)\n");
4264 return EXIT_FAILURE
;
4270 /* If the load average is going to be needed while receiving a message, get it
4271 now for those OS that require the first call to os_getloadavg() to be done as
4272 root. There will be further calls later for each message received. */
4274 #ifdef LOAD_AVG_NEEDS_ROOT
4275 if (receiving_message
&&
4276 (queue_only_load
>= 0 ||
4277 (is_inetd
&& smtp_load_reserve
>= 0)
4280 load_average
= OS_GETLOADAVG();
4284 /* The queue_only configuration option can be overridden by -odx on the command
4285 line, except that if queue_only_override is false, queue_only cannot be unset
4286 from the command line. */
4288 if (queue_only_set
&& (queue_only_override
|| arg_queue_only
))
4289 queue_only
= arg_queue_only
;
4291 /* The receive_timeout and smtp_receive_timeout options can be overridden by
4294 if (arg_receive_timeout
>= 0) receive_timeout
= arg_receive_timeout
;
4295 if (arg_smtp_receive_timeout
>= 0)
4296 smtp_receive_timeout
= arg_smtp_receive_timeout
;
4298 /* If Exim was started with root privilege, unless we have already removed the
4299 root privilege above as a result of -C, -D, -be, -bf or -bF, remove it now
4300 except when starting the daemon or doing some kind of delivery or address
4301 testing (-bt). These are the only cases when root need to be retained. We run
4302 as exim for -bv and -bh. However, if deliver_drop_privilege is set, root is
4303 retained only for starting the daemon. We always do the initgroups() in this
4304 situation (controlled by the TRUE below), in order to be as close as possible
4305 to the state Exim usually runs in. */
4307 if (!unprivileged
&& /* originally had root AND */
4308 !removed_privilege
&& /* still got root AND */
4309 !daemon_listen
&& /* not starting the daemon */
4310 queue_interval
<= 0 && /* (either kind of daemon) */
4312 deliver_drop_privilege
|| /* requested unprivileged */
4314 queue_interval
< 0 && /* not running the queue */
4315 (msg_action_arg
< 0 || /* and */
4316 msg_action
!= MSG_DELIVER
) && /* not delivering and */
4317 (!checking
|| !address_test_mode
) /* not address checking */
4319 exim_setugid(exim_uid
, exim_gid
, TRUE
, US
"privilege not needed");
4321 /* When we are retaining a privileged uid, we still change to the exim gid. */
4326 rv
= setgid(exim_gid
);
4327 /* Impact of failure is that some stuff might end up with an incorrect group.
4328 We track this for failures from root, since any attempt to change privilege
4329 by root should succeed and failures should be examined. For non-root,
4330 there's no security risk. For me, it's { exim -bV } on a just-built binary,
4331 no need to complain then. */
4333 if (!(unprivileged
|| removed_privilege
))
4336 "exim: changing group failed: %s\n", strerror(errno
));
4340 DEBUG(D_any
) debug_printf("changing group to %ld failed: %s\n",
4341 (long int)exim_gid
, strerror(errno
));
4344 /* Handle a request to scan a file for malware */
4345 if (malware_test_file
)
4347 #ifdef WITH_CONTENT_SCAN
4349 set_process_info("scanning file for malware");
4350 result
= malware_in_file(malware_test_file
);
4353 printf("No malware found.\n");
4358 printf("Malware lookup returned non-okay/fail: %d\n", result
);
4362 printf("Malware found: %s\n", malware_name
);
4364 printf("Malware scan detected malware of unknown name.\n");
4366 printf("Malware scanning not enabled at compile time.\n");
4371 /* Handle a request to list the delivery queue */
4375 set_process_info("listing the queue");
4376 queue_list(list_queue_option
, argv
+ recipients_arg
, argc
- recipients_arg
);
4380 /* Handle a request to count the delivery queue */
4384 set_process_info("counting the queue");
4389 /* Handle actions on specific messages, except for the force delivery and
4390 message load actions, which are done below. Some actions take a whole list of
4391 message ids, which are known to continue up to the end of the arguments. Others
4392 take a single message id and then operate on the recipients list. */
4394 if (msg_action_arg
> 0 && msg_action
!= MSG_DELIVER
&& msg_action
!= MSG_LOAD
)
4396 int yield
= EXIT_SUCCESS
;
4397 set_process_info("acting on specified messages");
4399 if (!one_msg_action
)
4401 for (i
= msg_action_arg
; i
< argc
; i
++)
4402 if (!queue_action(argv
[i
], msg_action
, NULL
, 0, 0))
4403 yield
= EXIT_FAILURE
;
4406 else if (!queue_action(argv
[msg_action_arg
], msg_action
, argv
, argc
,
4407 recipients_arg
)) yield
= EXIT_FAILURE
;
4411 /* We used to set up here to skip reading the ACL section, on
4412 (msg_action_arg > 0 || (queue_interval == 0 && !daemon_listen)
4413 Now, since the intro of the ${acl } expansion, ACL definitions may be
4414 needed in transports so we lost the optimisation. */
4418 /* The configuration data will have been read into POOL_PERM because we won't
4419 ever want to reset back past it. Change the current pool to POOL_MAIN. In fact,
4420 this is just a bit of pedantic tidiness. It wouldn't really matter if the
4421 configuration were read into POOL_MAIN, because we don't do any resets till
4422 later on. However, it seems right, and it does ensure that both pools get used.
4425 store_pool
= POOL_MAIN
;
4427 /* Handle the -brt option. This is for checking out retry configurations.
4428 The next three arguments are a domain name or a complete address, and
4429 optionally two error numbers. All it does is to call the function that
4430 scans the retry configuration data. */
4432 if (test_retry_arg
>= 0)
4434 retry_config
*yield
;
4435 int basic_errno
= 0;
4439 if (test_retry_arg
>= argc
)
4441 printf("-brt needs a domain or address argument\n");
4442 exim_exit(EXIT_FAILURE
, US
"main");
4444 s1
= argv
[test_retry_arg
++];
4447 /* If the first argument contains no @ and no . it might be a local user
4448 or it might be a single-component name. Treat as a domain. */
4450 if (Ustrchr(s1
, '@') == NULL
&& Ustrchr(s1
, '.') == NULL
)
4452 printf("Warning: \"%s\" contains no '@' and no '.' characters. It is "
4453 "being \ntreated as a one-component domain, not as a local part.\n\n",
4457 /* There may be an optional second domain arg. */
4459 if (test_retry_arg
< argc
&& Ustrchr(argv
[test_retry_arg
], '.') != NULL
)
4460 s2
= argv
[test_retry_arg
++];
4462 /* The final arg is an error name */
4464 if (test_retry_arg
< argc
)
4466 uschar
*ss
= argv
[test_retry_arg
];
4468 readconf_retry_error(ss
, ss
+ Ustrlen(ss
), &basic_errno
, &more_errno
);
4471 printf("%s\n", CS error
);
4472 return EXIT_FAILURE
;
4475 /* For the {MAIL,RCPT,DATA}_4xx errors, a value of 255 means "any", and a
4476 code > 100 as an error is for matching codes to the decade. Turn them into
4477 a real error code, off the decade. */
4479 if (basic_errno
== ERRNO_MAIL4XX
||
4480 basic_errno
== ERRNO_RCPT4XX
||
4481 basic_errno
== ERRNO_DATA4XX
)
4483 int code
= (more_errno
>> 8) & 255;
4485 more_errno
= (more_errno
& 0xffff00ff) | (21 << 8);
4486 else if (code
> 100)
4487 more_errno
= (more_errno
& 0xffff00ff) | ((code
- 96) << 8);
4491 if (!(yield
= retry_find_config(s1
, s2
, basic_errno
, more_errno
)))
4492 printf("No retry information found\n");
4496 more_errno
= yield
->more_errno
;
4497 printf("Retry rule: %s ", yield
->pattern
);
4499 if (yield
->basic_errno
== ERRNO_EXIMQUOTA
)
4501 printf("quota%s%s ",
4502 (more_errno
> 0)? "_" : "",
4503 (more_errno
> 0)? readconf_printtime(more_errno
) : US
"");
4505 else if (yield
->basic_errno
== ECONNREFUSED
)
4507 printf("refused%s%s ",
4508 (more_errno
> 0)? "_" : "",
4509 (more_errno
== 'M')? "MX" :
4510 (more_errno
== 'A')? "A" : "");
4512 else if (yield
->basic_errno
== ETIMEDOUT
)
4515 if ((more_errno
& RTEF_CTOUT
) != 0) printf("_connect");
4517 if (more_errno
!= 0) printf("_%s",
4518 (more_errno
== 'M')? "MX" : "A");
4521 else if (yield
->basic_errno
== ERRNO_AUTHFAIL
)
4522 printf("auth_failed ");
4525 for (r
= yield
->rules
; r
; r
= r
->next
)
4527 printf("%c,%s", r
->rule
, readconf_printtime(r
->timeout
)); /* Do not */
4528 printf(",%s", readconf_printtime(r
->p1
)); /* amalgamate */
4534 printf(",%d.", x
/1000);
4548 exim_exit(EXIT_SUCCESS
, US
"main");
4551 /* Handle a request to list one or more configuration options */
4552 /* If -n was set, we suppress some information */
4556 set_process_info("listing variables");
4557 if (recipients_arg
>= argc
) readconf_print(US
"all", NULL
, flag_n
);
4558 else for (i
= recipients_arg
; i
< argc
; i
++)
4561 (Ustrcmp(argv
[i
], "router") == 0 ||
4562 Ustrcmp(argv
[i
], "transport") == 0 ||
4563 Ustrcmp(argv
[i
], "authenticator") == 0 ||
4564 Ustrcmp(argv
[i
], "macro") == 0 ||
4565 Ustrcmp(argv
[i
], "environment") == 0))
4567 readconf_print(argv
[i
+1], argv
[i
], flag_n
);
4570 else readconf_print(argv
[i
], NULL
, flag_n
);
4572 exim_exit(EXIT_SUCCESS
, US
"main");
4577 set_process_info("listing config");
4578 readconf_print(US
"config", NULL
, flag_n
);
4579 exim_exit(EXIT_SUCCESS
, US
"main");
4583 /* Initialise subsystems as required */
4584 #ifndef DISABLE_DKIM
4590 /* Handle a request to deliver one or more messages that are already on the
4591 queue. Values of msg_action other than MSG_DELIVER and MSG_LOAD are dealt with
4592 above. MSG_LOAD is handled with -be (which is the only time it applies) below.
4594 Delivery of specific messages is typically used for a small number when
4595 prodding by hand (when the option forced_delivery will be set) or when
4596 re-execing to regain root privilege. Each message delivery must happen in a
4597 separate process, so we fork a process for each one, and run them sequentially
4598 so that debugging output doesn't get intertwined, and to avoid spawning too
4599 many processes if a long list is given. However, don't fork for the last one;
4600 this saves a process in the common case when Exim is called to deliver just one
4603 if (msg_action_arg
> 0 && msg_action
!= MSG_LOAD
)
4605 if (prod_requires_admin
&& !admin_user
)
4607 fprintf(stderr
, "exim: Permission denied\n");
4608 exim_exit(EXIT_FAILURE
, US
"main");
4610 set_process_info("delivering specified messages");
4611 if (deliver_give_up
) forced_delivery
= deliver_force_thaw
= TRUE
;
4612 for (i
= msg_action_arg
; i
< argc
; i
++)
4617 (void)deliver_message(argv
[i
], forced_delivery
, deliver_give_up
);
4618 else if ((pid
= fork()) == 0)
4620 (void)deliver_message(argv
[i
], forced_delivery
, deliver_give_up
);
4621 _exit(EXIT_SUCCESS
);
4625 fprintf(stderr
, "failed to fork delivery process for %s: %s\n", argv
[i
],
4627 exim_exit(EXIT_FAILURE
, US
"main");
4631 exim_exit(EXIT_SUCCESS
, US
"main");
4635 /* If only a single queue run is requested, without SMTP listening, we can just
4636 turn into a queue runner, with an optional starting message id. */
4638 if (queue_interval
== 0 && !daemon_listen
)
4640 DEBUG(D_queue_run
) debug_printf("Single queue run%s%s%s%s\n",
4641 (start_queue_run_id
== NULL
)? US
"" : US
" starting at ",
4642 (start_queue_run_id
== NULL
)? US
"" : start_queue_run_id
,
4643 (stop_queue_run_id
== NULL
)? US
"" : US
" stopping at ",
4644 (stop_queue_run_id
== NULL
)? US
"" : stop_queue_run_id
);
4646 set_process_info("running the '%s' queue (single queue run)", queue_name
);
4648 set_process_info("running the queue (single queue run)");
4649 queue_run(start_queue_run_id
, stop_queue_run_id
, FALSE
);
4650 exim_exit(EXIT_SUCCESS
, US
"main");
4654 /* Find the login name of the real user running this process. This is always
4655 needed when receiving a message, because it is written into the spool file. It
4656 may also be used to construct a from: or a sender: header, and in this case we
4657 need the user's full name as well, so save a copy of it, checked for RFC822
4658 syntax and munged if necessary, if it hasn't previously been set by the -F
4659 argument. We may try to get the passwd entry more than once, in case NIS or
4660 other delays are in evidence. Save the home directory for use in filter testing
4665 if ((pw
= getpwuid(real_uid
)) != NULL
)
4667 originator_login
= string_copy(US pw
->pw_name
);
4668 originator_home
= string_copy(US pw
->pw_dir
);
4670 /* If user name has not been set by -F, set it from the passwd entry
4671 unless -f has been used to set the sender address by a trusted user. */
4673 if (!originator_name
)
4675 if (!sender_address
|| (!trusted_caller
&& filter_test
== FTEST_NONE
))
4677 uschar
*name
= US pw
->pw_gecos
;
4678 uschar
*amp
= Ustrchr(name
, '&');
4681 /* Most Unix specify that a '&' character in the gecos field is
4682 replaced by a copy of the login name, and some even specify that
4683 the first character should be upper cased, so that's what we do. */
4688 string_format(buffer
, sizeof(buffer
), "%.*s%n%s%s",
4689 (int)(amp
- name
), name
, &loffset
, originator_login
, amp
+ 1);
4690 buffer
[loffset
] = toupper(buffer
[loffset
]);
4694 /* If a pattern for matching the gecos field was supplied, apply
4695 it and then expand the name string. */
4697 if (gecos_pattern
&& gecos_name
)
4700 re
= regex_must_compile(gecos_pattern
, FALSE
, TRUE
); /* Use malloc */
4702 if (regex_match_and_setup(re
, name
, 0, -1))
4704 uschar
*new_name
= expand_string(gecos_name
);
4708 DEBUG(D_receive
) debug_printf("user name \"%s\" extracted from "
4709 "gecos field \"%s\"\n", new_name
, name
);
4712 else DEBUG(D_receive
) debug_printf("failed to expand gecos_name string "
4713 "\"%s\": %s\n", gecos_name
, expand_string_message
);
4715 else DEBUG(D_receive
) debug_printf("gecos_pattern \"%s\" did not match "
4716 "gecos field \"%s\"\n", gecos_pattern
, name
);
4717 store_free((void *)re
);
4719 originator_name
= string_copy(name
);
4722 /* A trusted caller has used -f but not -F */
4724 else originator_name
= US
"";
4727 /* Break the retry loop */
4732 if (++i
> finduser_retries
) break;
4736 /* If we cannot get a user login, log the incident and give up, unless the
4737 configuration specifies something to use. When running in the test harness,
4738 any setting of unknown_login overrides the actual name. */
4740 if (originator_login
== NULL
|| running_in_test_harness
)
4742 if (unknown_login
!= NULL
)
4744 originator_login
= expand_string(unknown_login
);
4745 if (originator_name
== NULL
&& unknown_username
!= NULL
)
4746 originator_name
= expand_string(unknown_username
);
4747 if (originator_name
== NULL
) originator_name
= US
"";
4749 if (originator_login
== NULL
)
4750 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Failed to get user name for uid %d",
4754 /* Ensure that the user name is in a suitable form for use as a "phrase" in an
4757 originator_name
= string_copy(parse_fix_phrase(originator_name
,
4758 Ustrlen(originator_name
), big_buffer
, big_buffer_size
));
4760 /* If a message is created by this call of Exim, the uid/gid of its originator
4761 are those of the caller. These values are overridden if an existing message is
4762 read in from the spool. */
4764 originator_uid
= real_uid
;
4765 originator_gid
= real_gid
;
4767 DEBUG(D_receive
) debug_printf("originator: uid=%d gid=%d login=%s name=%s\n",
4768 (int)originator_uid
, (int)originator_gid
, originator_login
, originator_name
);
4770 /* Run in daemon and/or queue-running mode. The function daemon_go() never
4771 returns. We leave this till here so that the originator_ fields are available
4772 for incoming messages via the daemon. The daemon cannot be run in mua_wrapper
4775 if (daemon_listen
|| inetd_wait_mode
|| queue_interval
> 0)
4779 fprintf(stderr
, "Daemon cannot be run when mua_wrapper is set\n");
4780 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "Daemon cannot be run when "
4781 "mua_wrapper is set");
4786 /* If the sender ident has not been set (by a trusted caller) set it to
4787 the caller. This will get overwritten below for an inetd call. If a trusted
4788 caller has set it empty, unset it. */
4790 if (sender_ident
== NULL
) sender_ident
= originator_login
;
4791 else if (sender_ident
[0] == 0) sender_ident
= NULL
;
4793 /* Handle the -brw option, which is for checking out rewriting rules. Cause log
4794 writes (on errors) to go to stderr instead. Can't do this earlier, as want the
4795 originator_* variables set. */
4797 if (test_rewrite_arg
>= 0)
4799 really_exim
= FALSE
;
4800 if (test_rewrite_arg
>= argc
)
4802 printf("-brw needs an address argument\n");
4803 exim_exit(EXIT_FAILURE
, US
"main");
4805 rewrite_test(argv
[test_rewrite_arg
]);
4806 exim_exit(EXIT_SUCCESS
, US
"main");
4809 /* A locally-supplied message is considered to be coming from a local user
4810 unless a trusted caller supplies a sender address with -f, or is passing in the
4811 message via SMTP (inetd invocation or otherwise). */
4813 if ((sender_address
== NULL
&& !smtp_input
) ||
4814 (!trusted_caller
&& filter_test
== FTEST_NONE
))
4816 sender_local
= TRUE
;
4818 /* A trusted caller can supply authenticated_sender and authenticated_id
4819 via -oMas and -oMai and if so, they will already be set. Otherwise, force
4820 defaults except when host checking. */
4822 if (authenticated_sender
== NULL
&& !host_checking
)
4823 authenticated_sender
= string_sprintf("%s@%s", originator_login
,
4824 qualify_domain_sender
);
4825 if (authenticated_id
== NULL
&& !host_checking
)
4826 authenticated_id
= originator_login
;
4829 /* Trusted callers are always permitted to specify the sender address.
4830 Untrusted callers may specify it if it matches untrusted_set_sender, or if what
4831 is specified is the empty address. However, if a trusted caller does not
4832 specify a sender address for SMTP input, we leave sender_address unset. This
4833 causes the MAIL commands to be honoured. */
4835 if ((!smtp_input
&& sender_address
== NULL
) ||
4836 !receive_check_set_sender(sender_address
))
4838 /* Either the caller is not permitted to set a general sender, or this is
4839 non-SMTP input and the trusted caller has not set a sender. If there is no
4840 sender, or if a sender other than <> is set, override with the originator's
4841 login (which will get qualified below), except when checking things. */
4843 if (sender_address
== NULL
/* No sender_address set */
4845 (sender_address
[0] != 0 && /* Non-empty sender address, AND */
4846 !checking
)) /* Not running tests, including filter tests */
4848 sender_address
= originator_login
;
4849 sender_address_forced
= FALSE
;
4850 sender_address_domain
= 0;
4854 /* Remember whether an untrusted caller set the sender address */
4856 sender_set_untrusted
= sender_address
!= originator_login
&& !trusted_caller
;
4858 /* Ensure that the sender address is fully qualified unless it is the empty
4859 address, which indicates an error message, or doesn't exist (root caller, smtp
4860 interface, no -f argument). */
4862 if (sender_address
!= NULL
&& sender_address
[0] != 0 &&
4863 sender_address_domain
== 0)
4864 sender_address
= string_sprintf("%s@%s", local_part_quote(sender_address
),
4865 qualify_domain_sender
);
4867 DEBUG(D_receive
) debug_printf("sender address = %s\n", sender_address
);
4869 /* Handle a request to verify a list of addresses, or test them for delivery.
4870 This must follow the setting of the sender address, since routers can be
4871 predicated upon the sender. If no arguments are given, read addresses from
4872 stdin. Set debug_level to at least D_v to get full output for address testing.
4875 if (verify_address_mode
|| address_test_mode
)
4878 int flags
= vopt_qualify
;
4880 if (verify_address_mode
)
4882 if (!verify_as_sender
) flags
|= vopt_is_recipient
;
4883 DEBUG(D_verify
) debug_print_ids(US
"Verifying:");
4888 flags
|= vopt_is_recipient
;
4889 debug_selector
|= D_v
;
4890 debug_file
= stderr
;
4891 debug_fd
= fileno(debug_file
);
4892 DEBUG(D_verify
) debug_print_ids(US
"Address testing:");
4895 if (recipients_arg
< argc
)
4897 while (recipients_arg
< argc
)
4899 uschar
*s
= argv
[recipients_arg
++];
4902 BOOL finished
= FALSE
;
4903 uschar
*ss
= parse_find_address_end(s
, FALSE
);
4904 if (*ss
== ',') *ss
= 0; else finished
= TRUE
;
4905 test_address(s
, flags
, &exit_value
);
4908 while (*(++s
) != 0 && (*s
== ',' || isspace(*s
)));
4915 uschar
*s
= get_stdinput(NULL
, NULL
);
4916 if (s
== NULL
) break;
4917 test_address(s
, flags
, &exit_value
);
4921 exim_exit(exit_value
, US
"main");
4924 /* Handle expansion checking. Either expand items on the command line, or read
4925 from stdin if there aren't any. If -Mset was specified, load the message so
4926 that its variables can be used, but restrict this facility to admin users.
4927 Otherwise, if -bem was used, read a message from stdin. */
4931 dns_init(FALSE
, FALSE
, FALSE
);
4932 if (msg_action_arg
> 0 && msg_action
== MSG_LOAD
)
4934 uschar spoolname
[256]; /* Not big_buffer; used in spool_read_header() */
4937 fprintf(stderr
, "exim: permission denied\n");
4940 message_id
= argv
[msg_action_arg
];
4941 (void)string_format(spoolname
, sizeof(spoolname
), "%s-H", message_id
);
4942 if ((deliver_datafile
= spool_open_datafile(message_id
)) < 0)
4943 printf ("Failed to load message datafile %s\n", message_id
);
4944 if (spool_read_header(spoolname
, TRUE
, FALSE
) != spool_read_OK
)
4945 printf ("Failed to load message %s\n", message_id
);
4948 /* Read a test message from a file. We fudge it up to be on stdin, saving
4949 stdin itself for later reading of expansion strings. */
4951 else if (expansion_test_message
)
4953 int save_stdin
= dup(0);
4954 int fd
= Uopen(expansion_test_message
, O_RDONLY
, 0);
4957 fprintf(stderr
, "exim: failed to open %s: %s\n", expansion_test_message
,
4959 return EXIT_FAILURE
;
4962 filter_test
= FTEST_USER
; /* Fudge to make it look like filter test */
4963 message_ended
= END_NOTENDED
;
4964 read_message_body(receive_msg(extract_recipients
));
4965 message_linecount
+= body_linecount
;
4966 (void)dup2(save_stdin
, 0);
4967 (void)close(save_stdin
);
4968 clearerr(stdin
); /* Required by Darwin */
4971 /* Only admin users may see config-file macros this way */
4973 if (!admin_user
) macros
= mlast
= NULL
;
4975 /* Allow $recipients for this testing */
4977 enable_dollar_recipients
= TRUE
;
4979 /* Expand command line items */
4981 if (recipients_arg
< argc
)
4982 while (recipients_arg
< argc
)
4983 expansion_test_line(argv
[recipients_arg
++]);
4989 char *(*fn_readline
)(const char *) = NULL
;
4990 void (*fn_addhist
)(const char *) = NULL
;
4994 void *dlhandle
= set_readline(&fn_readline
, &fn_addhist
);
4997 while (s
= get_stdinput(fn_readline
, fn_addhist
))
4998 expansion_test_line(s
);
5001 if (dlhandle
) dlclose(dlhandle
);
5005 /* The data file will be open after -Mset */
5007 if (deliver_datafile
>= 0)
5009 (void)close(deliver_datafile
);
5010 deliver_datafile
= -1;
5013 exim_exit(EXIT_SUCCESS
, US
"main: expansion test");
5017 /* The active host name is normally the primary host name, but it can be varied
5018 for hosts that want to play several parts at once. We need to ensure that it is
5019 set for host checking, and for receiving messages. */
5021 smtp_active_hostname
= primary_hostname
;
5022 if (raw_active_hostname
!= NULL
)
5024 uschar
*nah
= expand_string(raw_active_hostname
);
5027 if (!expand_string_forcedfail
)
5028 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand \"%s\" "
5029 "(smtp_active_hostname): %s", raw_active_hostname
,
5030 expand_string_message
);
5032 else if (nah
[0] != 0) smtp_active_hostname
= nah
;
5035 /* Handle host checking: this facility mocks up an incoming SMTP call from a
5036 given IP address so that the blocking and relay configuration can be tested.
5037 Unless a sender_ident was set by -oMt, we discard it (the default is the
5038 caller's login name). An RFC 1413 call is made only if we are running in the
5039 test harness and an incoming interface and both ports are specified, because
5040 there is no TCP/IP call to find the ident for. */
5047 if (!sender_ident_set
)
5049 sender_ident
= NULL
;
5050 if (running_in_test_harness
&& sender_host_port
!= 0 &&
5051 interface_address
!= NULL
&& interface_port
!= 0)
5052 verify_get_ident(1413);
5055 /* In case the given address is a non-canonical IPv6 address, canonicalize
5056 it. The code works for both IPv4 and IPv6, as it happens. */
5058 size
= host_aton(sender_host_address
, x
);
5059 sender_host_address
= store_get(48); /* large enough for full IPv6 */
5060 (void)host_nmtoa(size
, x
, -1, sender_host_address
, ':');
5062 /* Now set up for testing */
5064 host_build_sender_fullhost();
5068 sender_local
= FALSE
;
5069 sender_host_notsocket
= TRUE
;
5070 debug_file
= stderr
;
5071 debug_fd
= fileno(debug_file
);
5072 fprintf(stdout
, "\n**** SMTP testing session as if from host %s\n"
5073 "**** but without any ident (RFC 1413) callback.\n"
5074 "**** This is not for real!\n\n",
5075 sender_host_address
);
5077 memset(sender_host_cache
, 0, sizeof(sender_host_cache
));
5078 if (verify_check_host(&hosts_connection_nolog
) == OK
)
5079 BIT_CLEAR(log_selector
, log_selector_size
, Li_smtp_connection
);
5080 log_write(L_smtp_connection
, LOG_MAIN
, "%s", smtp_get_connection_info());
5082 /* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails,
5083 because a log line has already been written for all its failure exists
5084 (usually "connection refused: <reason>") and writing another one is
5085 unnecessary clutter. */
5087 if (smtp_start_session())
5089 for (reset_point
= store_get(0); ; store_reset(reset_point
))
5091 if (smtp_setup_msg() <= 0) break;
5092 if (!receive_msg(FALSE
)) break;
5094 return_path
= sender_address
= NULL
;
5095 dnslist_domain
= dnslist_matched
= NULL
;
5096 #ifndef DISABLE_DKIM
5097 dkim_cur_signer
= NULL
;
5100 deliver_localpart_orig
= NULL
;
5101 deliver_domain_orig
= NULL
;
5102 callout_address
= sending_ip_address
= NULL
;
5103 sender_rate
= sender_rate_limit
= sender_rate_period
= NULL
;
5107 exim_exit(EXIT_SUCCESS
, US
"main");
5111 /* Arrange for message reception if recipients or SMTP were specified;
5112 otherwise complain unless a version print (-bV) happened or this is a filter
5113 verification test or info dump.
5114 In the former case, show the configuration file name. */
5116 if (recipients_arg
>= argc
&& !extract_recipients
&& !smtp_input
)
5118 if (version_printed
)
5120 printf("Configuration file is %s\n", config_main_filename
);
5121 return EXIT_SUCCESS
;
5124 if (info_flag
!= CMDINFO_NONE
)
5126 show_exim_information(info_flag
, info_stdout
? stdout
: stderr
);
5127 return info_stdout
? EXIT_SUCCESS
: EXIT_FAILURE
;
5130 if (filter_test
== FTEST_NONE
)
5131 exim_usage(called_as
);
5135 /* If mua_wrapper is set, Exim is being used to turn an MUA that submits on the
5136 standard input into an MUA that submits to a smarthost over TCP/IP. We know
5137 that we are not called from inetd, because that is rejected above. The
5138 following configuration settings are forced here:
5140 (1) Synchronous delivery (-odi)
5141 (2) Errors to stderr (-oep == -oeq)
5142 (3) No parallel remote delivery
5143 (4) Unprivileged delivery
5145 We don't force overall queueing options because there are several of them;
5146 instead, queueing is avoided below when mua_wrapper is set. However, we do need
5147 to override any SMTP queueing. */
5151 synchronous_delivery
= TRUE
;
5152 arg_error_handling
= ERRORS_STDERR
;
5153 remote_max_parallel
= 1;
5154 deliver_drop_privilege
= TRUE
;
5156 queue_smtp_domains
= NULL
;
5158 message_utf8_downconvert
= -1; /* convert-if-needed */
5163 /* Prepare to accept one or more new messages on the standard input. When a
5164 message has been read, its id is returned in message_id[]. If doing immediate
5165 delivery, we fork a delivery process for each received message, except for the
5166 last one, where we can save a process switch.
5168 It is only in non-smtp mode that error_handling is allowed to be changed from
5169 its default of ERRORS_SENDER by argument. (Idle thought: are any of the
5170 sendmail error modes other than -oem ever actually used? Later: yes.) */
5172 if (!smtp_input
) error_handling
= arg_error_handling
;
5174 /* If this is an inetd call, ensure that stderr is closed to prevent panic
5175 logging being sent down the socket and make an identd call to get the
5180 (void)fclose(stderr
);
5181 exim_nullstd(); /* Re-open to /dev/null */
5182 verify_get_ident(IDENT_PORT
);
5183 host_build_sender_fullhost();
5184 set_process_info("handling incoming connection from %s via inetd",
5188 /* If the sender host address has been set, build sender_fullhost if it hasn't
5189 already been done (which it will have been for inetd). This caters for the
5190 case when it is forced by -oMa. However, we must flag that it isn't a socket,
5191 so that the test for IP options is skipped for -bs input. */
5193 if (sender_host_address
!= NULL
&& sender_fullhost
== NULL
)
5195 host_build_sender_fullhost();
5196 set_process_info("handling incoming connection from %s via -oMa",
5198 sender_host_notsocket
= TRUE
;
5201 /* Otherwise, set the sender host as unknown except for inetd calls. This
5202 prevents host checking in the case of -bs not from inetd and also for -bS. */
5204 else if (!is_inetd
) sender_host_unknown
= TRUE
;
5206 /* If stdout does not exist, then dup stdin to stdout. This can happen
5207 if exim is started from inetd. In this case fd 0 will be set to the socket,
5208 but fd 1 will not be set. This also happens for passed SMTP channels. */
5210 if (fstat(1, &statbuf
) < 0) (void)dup2(0, 1);
5212 /* Set up the incoming protocol name and the state of the program. Root is
5213 allowed to force received protocol via the -oMr option above. If we have come
5214 via inetd, the process info has already been set up. We don't set
5215 received_protocol here for smtp input, as it varies according to
5216 batch/HELO/EHLO/AUTH/TLS. */
5220 if (!is_inetd
) set_process_info("accepting a local %sSMTP message from <%s>",
5221 smtp_batched_input
? "batched " : "",
5222 (sender_address
!= NULL
)? sender_address
: originator_login
);
5226 int old_pool
= store_pool
;
5227 store_pool
= POOL_PERM
;
5228 if (!received_protocol
)
5229 received_protocol
= string_sprintf("local%s", called_as
);
5230 store_pool
= old_pool
;
5231 set_process_info("accepting a local non-SMTP message from <%s>",
5235 /* Initialize the session_local_queue-only flag (this will be ignored if
5236 mua_wrapper is set) */
5239 session_local_queue_only
= queue_only
;
5241 /* For non-SMTP and for batched SMTP input, check that there is enough space on
5242 the spool if so configured. On failure, we must not attempt to send an error
5243 message! (For interactive SMTP, the check happens at MAIL FROM and an SMTP
5244 error code is given.) */
5246 if ((!smtp_input
|| smtp_batched_input
) && !receive_check_fs(0))
5248 fprintf(stderr
, "exim: insufficient disk space\n");
5249 return EXIT_FAILURE
;
5252 /* If this is smtp input of any kind, real or batched, handle the start of the
5255 NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails,
5256 because a log line has already been written for all its failure exists
5257 (usually "connection refused: <reason>") and writing another one is
5258 unnecessary clutter. */
5264 memset(sender_host_cache
, 0, sizeof(sender_host_cache
));
5265 if (verify_check_host(&hosts_connection_nolog
) == OK
)
5266 BIT_CLEAR(log_selector
, log_selector_size
, Li_smtp_connection
);
5267 log_write(L_smtp_connection
, LOG_MAIN
, "%s", smtp_get_connection_info());
5268 if (!smtp_start_session())
5271 exim_exit(EXIT_SUCCESS
, US
"smtp_start toplevel");
5275 /* Otherwise, set up the input size limit here. */
5279 thismessage_size_limit
= expand_string_integer(message_size_limit
, TRUE
);
5280 if (expand_string_message
)
5281 if (thismessage_size_limit
== -1)
5282 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "failed to expand "
5283 "message_size_limit: %s", expand_string_message
);
5285 log_write(0, LOG_MAIN
|LOG_PANIC_DIE
, "invalid value for "
5286 "message_size_limit: %s", expand_string_message
);
5289 /* Loop for several messages when reading SMTP input. If we fork any child
5290 processes, we don't want to wait for them unless synchronous delivery is
5291 requested, so set SIGCHLD to SIG_IGN in that case. This is not necessarily the
5292 same as SIG_DFL, despite the fact that documentation often lists the default as
5293 "ignore". This is a confusing area. This is what I know:
5295 At least on some systems (e.g. Solaris), just setting SIG_IGN causes child
5296 processes that complete simply to go away without ever becoming defunct. You
5297 can't then wait for them - but we don't want to wait for them in the
5298 non-synchronous delivery case. However, this behaviour of SIG_IGN doesn't
5299 happen for all OS (e.g. *BSD is different).
5301 But that's not the end of the story. Some (many? all?) systems have the
5302 SA_NOCLDWAIT option for sigaction(). This requests the behaviour that Solaris
5303 has by default, so it seems that the difference is merely one of default
5304 (compare restarting vs non-restarting signals).
5306 To cover all cases, Exim sets SIG_IGN with SA_NOCLDWAIT here if it can. If not,
5307 it just sets SIG_IGN. To be on the safe side it also calls waitpid() at the end
5308 of the loop below. Paranoia rules.
5310 February 2003: That's *still* not the end of the story. There are now versions
5311 of Linux (where SIG_IGN does work) that are picky. If, having set SIG_IGN, a
5312 process then calls waitpid(), a grumble is written to the system log, because
5313 this is logically inconsistent. In other words, it doesn't like the paranoia.
5314 As a consequence of this, the waitpid() below is now excluded if we are sure
5315 that SIG_IGN works. */
5317 if (!synchronous_delivery
)
5320 struct sigaction act
;
5321 act
.sa_handler
= SIG_IGN
;
5322 sigemptyset(&(act
.sa_mask
));
5323 act
.sa_flags
= SA_NOCLDWAIT
;
5324 sigaction(SIGCHLD
, &act
, NULL
);
5326 signal(SIGCHLD
, SIG_IGN
);
5330 /* Save the current store pool point, for resetting at the start of
5331 each message, and save the real sender address, if any. */
5333 reset_point
= store_get(0);
5334 real_sender_address
= sender_address
;
5336 /* Loop to receive messages; receive_msg() returns TRUE if there are more
5337 messages to be read (SMTP input), or FALSE otherwise (not SMTP, or SMTP channel
5344 /* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP
5345 input and build the recipients list, before calling receive_msg() to read the
5346 message proper. Whatever sender address is given in the SMTP transaction is
5347 often ignored for local senders - we use the actual sender, which is normally
5348 either the underlying user running this process or a -f argument provided by
5349 a trusted caller. It is saved in real_sender_address. The test for whether to
5350 accept the SMTP sender is encapsulated in receive_check_set_sender(). */
5355 if ((rc
= smtp_setup_msg()) > 0)
5357 if (real_sender_address
!= NULL
&&
5358 !receive_check_set_sender(sender_address
))
5360 sender_address
= raw_sender
= real_sender_address
;
5361 sender_address_unrewritten
= NULL
;
5364 /* For batched SMTP, we have to run the acl_not_smtp_start ACL, since it
5365 isn't really SMTP, so no other ACL will run until the acl_not_smtp one at
5366 the very end. The result of the ACL is ignored (as for other non-SMTP
5367 messages). It is run for its potential side effects. */
5369 if (smtp_batched_input
&& acl_not_smtp_start
!= NULL
)
5371 uschar
*user_msg
, *log_msg
;
5372 enable_dollar_recipients
= TRUE
;
5373 (void)acl_check(ACL_WHERE_NOTSMTP_START
, NULL
, acl_not_smtp_start
,
5374 &user_msg
, &log_msg
);
5375 enable_dollar_recipients
= FALSE
;
5378 /* Now get the data for the message */
5380 more
= receive_msg(extract_recipients
);
5381 if (message_id
[0] == 0)
5383 cancel_cutthrough_connection(TRUE
, US
"receive dropped");
5384 if (more
) goto moreloop
;
5385 smtp_log_no_mail(); /* Log no mail if configured */
5386 exim_exit(EXIT_FAILURE
, US
"receive toplevel");
5391 cancel_cutthrough_connection(TRUE
, US
"message setup dropped");
5392 smtp_log_no_mail(); /* Log no mail if configured */
5393 exim_exit(rc
? EXIT_FAILURE
: EXIT_SUCCESS
, US
"msg setup toplevel");
5397 /* In the non-SMTP case, we have all the information from the command
5398 line, but must process it in case it is in the more general RFC822
5399 format, and in any case, to detect syntax errors. Also, it appears that
5400 the use of comma-separated lists as single arguments is common, so we
5401 had better support them. */
5407 int count
= argc
- recipients_arg
;
5408 uschar
**list
= argv
+ recipients_arg
;
5410 /* These options cannot be changed dynamically for non-SMTP messages */
5412 active_local_sender_retain
= local_sender_retain
;
5413 active_local_from_check
= local_from_check
;
5415 /* Save before any rewriting */
5417 raw_sender
= string_copy(sender_address
);
5419 /* Loop for each argument */
5421 for (i
= 0; i
< count
; i
++)
5423 int start
, end
, domain
;
5425 uschar
*s
= list
[i
];
5427 /* Loop for each comma-separated address */
5431 BOOL finished
= FALSE
;
5433 uschar
*ss
= parse_find_address_end(s
, FALSE
);
5435 if (*ss
== ',') *ss
= 0; else finished
= TRUE
;
5437 /* Check max recipients - if -t was used, these aren't recipients */
5439 if (recipients_max
> 0 && ++rcount
> recipients_max
&&
5440 !extract_recipients
)
5441 if (error_handling
== ERRORS_STDERR
)
5443 fprintf(stderr
, "exim: too many recipients\n");
5444 exim_exit(EXIT_FAILURE
, US
"main");
5448 moan_to_sender(ERRMESS_TOOMANYRECIP
, NULL
, NULL
, stdin
, TRUE
)?
5449 errors_sender_rc
: EXIT_FAILURE
;
5453 BOOL b
= allow_utf8_domains
;
5454 allow_utf8_domains
= TRUE
;
5457 parse_extract_address(s
, &errmess
, &start
, &end
, &domain
, FALSE
);
5460 if (string_is_utf8(recipient
))
5461 message_smtputf8
= TRUE
;
5463 allow_utf8_domains
= b
;
5466 if (domain
== 0 && !allow_unqualified_recipient
)
5469 errmess
= US
"unqualified recipient address not allowed";
5472 if (recipient
== NULL
)
5474 if (error_handling
== ERRORS_STDERR
)
5476 fprintf(stderr
, "exim: bad recipient address \"%s\": %s\n",
5477 string_printing(list
[i
]), errmess
);
5478 exim_exit(EXIT_FAILURE
, US
"main");
5484 eblock
.text1
= string_printing(list
[i
]);
5485 eblock
.text2
= errmess
;
5487 moan_to_sender(ERRMESS_BADARGADDRESS
, &eblock
, NULL
, stdin
, TRUE
)?
5488 errors_sender_rc
: EXIT_FAILURE
;
5492 receive_add_recipient(recipient
, -1);
5495 while (*(++s
) != 0 && (*s
== ',' || isspace(*s
)));
5499 /* Show the recipients when debugging */
5504 if (sender_address
!= NULL
) debug_printf("Sender: %s\n", sender_address
);
5505 if (recipients_list
!= NULL
)
5507 debug_printf("Recipients:\n");
5508 for (i
= 0; i
< recipients_count
; i
++)
5509 debug_printf(" %s\n", recipients_list
[i
].address
);
5513 /* Run the acl_not_smtp_start ACL if required. The result of the ACL is
5514 ignored; rejecting here would just add complication, and it can just as
5515 well be done later. Allow $recipients to be visible in the ACL. */
5517 if (acl_not_smtp_start
)
5519 uschar
*user_msg
, *log_msg
;
5520 enable_dollar_recipients
= TRUE
;
5521 (void)acl_check(ACL_WHERE_NOTSMTP_START
, NULL
, acl_not_smtp_start
,
5522 &user_msg
, &log_msg
);
5523 enable_dollar_recipients
= FALSE
;
5526 /* Pause for a while waiting for input. If none received in that time,
5527 close the logfile, if we had one open; then if we wait for a long-running
5528 datasource (months, in one use-case) log rotation will not leave us holding
5531 if (!receive_timeout
)
5533 struct timeval t
= { .tv_sec
= 30*60, .tv_usec
= 0 }; /* 30 minutes */
5536 FD_ZERO(&r
); FD_SET(0, &r
);
5537 if (select(1, &r
, NULL
, NULL
, &t
) == 0) mainlog_close();
5540 /* Read the data for the message. If filter_test is not FTEST_NONE, this
5541 will just read the headers for the message, and not write anything onto the
5544 message_ended
= END_NOTENDED
;
5545 more
= receive_msg(extract_recipients
);
5547 /* more is always FALSE here (not SMTP message) when reading a message
5548 for real; when reading the headers of a message for filter testing,
5549 it is TRUE if the headers were terminated by '.' and FALSE otherwise. */
5551 if (message_id
[0] == 0) exim_exit(EXIT_FAILURE
, US
"main");
5552 } /* Non-SMTP message reception */
5554 /* If this is a filter testing run, there are headers in store, but
5555 no message on the spool. Run the filtering code in testing mode, setting
5556 the domain to the qualify domain and the local part to the current user,
5557 unless they have been set by options. The prefix and suffix are left unset
5558 unless specified. The the return path is set to to the sender unless it has
5559 already been set from a return-path header in the message. */
5561 if (filter_test
!= FTEST_NONE
)
5563 deliver_domain
= (ftest_domain
!= NULL
)?
5564 ftest_domain
: qualify_domain_recipient
;
5565 deliver_domain_orig
= deliver_domain
;
5566 deliver_localpart
= (ftest_localpart
!= NULL
)?
5567 ftest_localpart
: originator_login
;
5568 deliver_localpart_orig
= deliver_localpart
;
5569 deliver_localpart_prefix
= ftest_prefix
;
5570 deliver_localpart_suffix
= ftest_suffix
;
5571 deliver_home
= originator_home
;
5573 if (return_path
== NULL
)
5575 printf("Return-path copied from sender\n");
5576 return_path
= string_copy(sender_address
);
5579 printf("Return-path = %s\n", (return_path
[0] == 0)? US
"<>" : return_path
);
5580 printf("Sender = %s\n", (sender_address
[0] == 0)? US
"<>" : sender_address
);
5582 receive_add_recipient(
5583 string_sprintf("%s%s%s@%s",
5584 (ftest_prefix
== NULL
)? US
"" : ftest_prefix
,
5586 (ftest_suffix
== NULL
)? US
"" : ftest_suffix
,
5587 deliver_domain
), -1);
5589 printf("Recipient = %s\n", recipients_list
[0].address
);
5590 if (ftest_prefix
!= NULL
) printf("Prefix = %s\n", ftest_prefix
);
5591 if (ftest_suffix
!= NULL
) printf("Suffix = %s\n", ftest_suffix
);
5593 if (chdir("/")) /* Get away from wherever the user is running this from */
5595 DEBUG(D_receive
) debug_printf("chdir(\"/\") failed\n");
5596 exim_exit(EXIT_FAILURE
, US
"main");
5599 /* Now we run either a system filter test, or a user filter test, or both.
5600 In the latter case, headers added by the system filter will persist and be
5601 available to the user filter. We need to copy the filter variables
5604 if ((filter_test
& FTEST_SYSTEM
) != 0)
5605 if (!filter_runtest(filter_sfd
, filter_test_sfile
, TRUE
, more
))
5606 exim_exit(EXIT_FAILURE
, US
"main");
5608 memcpy(filter_sn
, filter_n
, sizeof(filter_sn
));
5610 if ((filter_test
& FTEST_USER
) != 0)
5611 if (!filter_runtest(filter_ufd
, filter_test_ufile
, FALSE
, more
))
5612 exim_exit(EXIT_FAILURE
, US
"main");
5614 exim_exit(EXIT_SUCCESS
, US
"main");
5617 /* Else act on the result of message reception. We should not get here unless
5618 message_id[0] is non-zero. If queue_only is set, session_local_queue_only
5619 will be TRUE. If it is not, check on the number of messages received in this
5622 if (!session_local_queue_only
&&
5623 smtp_accept_queue_per_connection
> 0 &&
5624 receive_messagecount
> smtp_accept_queue_per_connection
)
5626 session_local_queue_only
= TRUE
;
5627 queue_only_reason
= 2;
5630 /* Initialize local_queue_only from session_local_queue_only. If it is false,
5631 and queue_only_load is set, check that the load average is below it. If it is
5632 not, set local_queue_only TRUE. If queue_only_load_latch is true (the
5633 default), we put the whole session into queue_only mode. It then remains this
5634 way for any subsequent messages on the same SMTP connection. This is a
5635 deliberate choice; even though the load average may fall, it doesn't seem
5636 right to deliver later messages on the same call when not delivering earlier
5637 ones. However, there are odd cases where this is not wanted, so this can be
5638 changed by setting queue_only_load_latch false. */
5640 local_queue_only
= session_local_queue_only
;
5641 if (!local_queue_only
&& queue_only_load
>= 0)
5643 local_queue_only
= (load_average
= OS_GETLOADAVG()) > queue_only_load
;
5644 if (local_queue_only
)
5646 queue_only_reason
= 3;
5647 if (queue_only_load_latch
) session_local_queue_only
= TRUE
;
5651 /* If running as an MUA wrapper, all queueing options and freezing options
5655 local_queue_only
= queue_only_policy
= deliver_freeze
= FALSE
;
5657 /* Log the queueing here, when it will get a message id attached, but
5658 not if queue_only is set (case 0). Case 1 doesn't happen here (too many
5661 if (local_queue_only
)
5663 cancel_cutthrough_connection(TRUE
, US
"no delivery; queueing");
5664 switch(queue_only_reason
)
5667 log_write(L_delay_delivery
,
5668 LOG_MAIN
, "no immediate delivery: more than %d messages "
5669 "received in one connection", smtp_accept_queue_per_connection
);
5673 log_write(L_delay_delivery
,
5674 LOG_MAIN
, "no immediate delivery: load average %.2f",
5675 (double)load_average
/1000.0);
5680 else if (queue_only_policy
|| deliver_freeze
)
5681 cancel_cutthrough_connection(TRUE
, US
"no delivery; queueing");
5683 /* Else do the delivery unless the ACL or local_scan() called for queue only
5684 or froze the message. Always deliver in a separate process. A fork failure is
5685 not a disaster, as the delivery will eventually happen on a subsequent queue
5686 run. The search cache must be tidied before the fork, as the parent will
5687 do it before exiting. The child will trigger a lookup failure and
5688 thereby defer the delivery if it tries to use (for example) a cached ldap
5689 connection that the parent has called unbind on. */
5696 if ((pid
= fork()) == 0)
5699 close_unwanted(); /* Close unwanted file descriptors and TLS */
5700 exim_nullstd(); /* Ensure std{in,out,err} exist */
5702 /* Re-exec Exim if we need to regain privilege (note: in mua_wrapper
5703 mode, deliver_drop_privilege is forced TRUE). */
5705 if (geteuid() != root_uid
&& !deliver_drop_privilege
&& !unprivileged
)
5707 delivery_re_exec(CEE_EXEC_EXIT
);
5708 /* Control does not return here. */
5711 /* No need to re-exec */
5713 rc
= deliver_message(message_id
, FALSE
, FALSE
);
5715 _exit((!mua_wrapper
|| rc
== DELIVER_MUA_SUCCEEDED
)?
5716 EXIT_SUCCESS
: EXIT_FAILURE
);
5721 cancel_cutthrough_connection(TRUE
, US
"delivery fork failed");
5722 log_write(0, LOG_MAIN
|LOG_PANIC
, "failed to fork automatic delivery "
5723 "process: %s", strerror(errno
));
5727 release_cutthrough_connection(US
"msg passed for delivery");
5729 /* In the parent, wait if synchronous delivery is required. This will
5730 always be the case in MUA wrapper mode. */
5732 if (synchronous_delivery
)
5735 while (wait(&status
) != pid
);
5736 if ((status
& 0x00ff) != 0)
5737 log_write(0, LOG_MAIN
|LOG_PANIC
,
5738 "process %d crashed with signal %d while delivering %s",
5739 (int)pid
, status
& 0x00ff, message_id
);
5740 if (mua_wrapper
&& (status
& 0xffff) != 0) exim_exit(EXIT_FAILURE
, US
"main");
5745 /* The loop will repeat if more is TRUE. If we do not know know that the OS
5746 automatically reaps children (see comments above the loop), clear away any
5747 finished subprocesses here, in case there are lots of messages coming in
5748 from the same source. */
5750 #ifndef SIG_IGN_WORKS
5751 while (waitpid(-1, NULL
, WNOHANG
) > 0);
5755 return_path
= sender_address
= NULL
;
5756 authenticated_sender
= NULL
;
5757 deliver_localpart_orig
= NULL
;
5758 deliver_domain_orig
= NULL
;
5759 deliver_host
= deliver_host_address
= NULL
;
5760 dnslist_domain
= dnslist_matched
= NULL
;
5761 #ifdef WITH_CONTENT_SCAN
5762 malware_name
= NULL
;
5764 callout_address
= NULL
;
5765 sending_ip_address
= NULL
;
5767 { int i
; for(i
=0; i
<REGEX_VARS
; i
++) regex_vars
[i
] = NULL
; }
5769 store_reset(reset_point
);
5772 exim_exit(EXIT_SUCCESS
, US
"main"); /* Never returns */
5773 return 0; /* To stop compiler warning */