Avoid parsing cost for auto-macro creates
[exim.git] / src / src / exim.c
CommitLineData
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1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
80fea873 5/* Copyright (c) University of Cambridge 1995 - 2016 */
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6/* See the file NOTICE for conditions of use and distribution. */
7
8
9/* The main function: entry point, initialization, and high-level control.
10Also a few functions that don't naturally fit elsewhere. */
11
12
13#include "exim.h"
14
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15#ifdef __GLIBC__
16# include <gnu/libc-version.h>
17#endif
18
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19#ifdef USE_GNUTLS
20# include <gnutls/gnutls.h>
21# if GNUTLS_VERSION_NUMBER < 0x030103 && !defined(DISABLE_OCSP)
22# define DISABLE_OCSP
23# endif
24#endif
25
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26extern void init_lookup_list(void);
27
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28
29
30/*************************************************
31* Function interface to store functions *
32*************************************************/
33
34/* We need some real functions to pass to the PCRE regular expression library
35for store allocation via Exim's store manager. The normal calls are actually
36macros that pass over location information to make tracing easier. These
37functions just interface to the standard macro calls. A good compiler will
38optimize out the tail recursion and so not make them too expensive. There
39are two sets of functions; one for use when we want to retain the compiled
40regular expression for a long time; the other for short-term use. */
41
42static void *
43function_store_get(size_t size)
44{
45return store_get((int)size);
46}
47
48static void
49function_dummy_free(void *block) { block = block; }
50
51static void *
52function_store_malloc(size_t size)
53{
54return store_malloc((int)size);
55}
56
57static void
58function_store_free(void *block)
59{
60store_free(block);
61}
62
63
64
65
66/*************************************************
98a90c36
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67* Enums for cmdline interface *
68*************************************************/
69
70enum commandline_info { CMDINFO_NONE=0,
36a3ae5f 71 CMDINFO_HELP, CMDINFO_SIEVE, CMDINFO_DSCP };
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72
73
74
75
76/*************************************************
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77* Compile regular expression and panic on fail *
78*************************************************/
79
80/* This function is called when failure to compile a regular expression leads
81to a panic exit. In other cases, pcre_compile() is called directly. In many
82cases where this function is used, the results of the compilation are to be
83placed in long-lived store, so we temporarily reset the store management
84functions that PCRE uses if the use_malloc flag is set.
85
86Argument:
87 pattern the pattern to compile
88 caseless TRUE if caseless matching is required
89 use_malloc TRUE if compile into malloc store
90
91Returns: pointer to the compiled pattern
92*/
93
94const pcre *
476be7e2 95regex_must_compile(const uschar *pattern, BOOL caseless, BOOL use_malloc)
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96{
97int offset;
98int options = PCRE_COPT;
99const pcre *yield;
100const uschar *error;
101if (use_malloc)
102 {
103 pcre_malloc = function_store_malloc;
104 pcre_free = function_store_free;
105 }
106if (caseless) options |= PCRE_CASELESS;
476be7e2 107yield = pcre_compile(CCS pattern, options, (const char **)&error, &offset, NULL);
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108pcre_malloc = function_store_get;
109pcre_free = function_dummy_free;
110if (yield == NULL)
111 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "regular expression error: "
112 "%s at offset %d while compiling %s", error, offset, pattern);
113return yield;
114}
115
116
117
118
119/*************************************************
120* Execute regular expression and set strings *
121*************************************************/
122
123/* This function runs a regular expression match, and sets up the pointers to
124the matched substrings.
125
126Arguments:
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
133
134Returns: TRUE or FALSE
135*/
136
137BOOL
1dc92d5a 138regex_match_and_setup(const pcre *re, const uschar *subject, int options, int setup)
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139{
140int ovector[3*(EXPAND_MAXN+1)];
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141uschar * s = string_copy(subject); /* de-constifying */
142int n = pcre_exec(re, NULL, CS s, Ustrlen(s), 0,
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143 PCRE_EOPT | options, ovector, sizeof(ovector)/sizeof(int));
144BOOL yield = n >= 0;
145if (n == 0) n = EXPAND_MAXN + 1;
146if (yield)
147 {
148 int nn;
149 expand_nmax = (setup < 0)? 0 : setup + 1;
150 for (nn = (setup < 0)? 0 : 2; nn < n*2; nn += 2)
151 {
1dc92d5a 152 expand_nstring[expand_nmax] = s + ovector[nn];
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153 expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn];
154 }
155 expand_nmax--;
156 }
157return yield;
158}
159
160
161
162
163/*************************************************
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164* Set up processing details *
165*************************************************/
166
167/* Save a text string for dumping when SIGUSR1 is received.
168Do checks for overruns.
169
170Arguments: format and arguments, as for printf()
171Returns: nothing
172*/
173
174void
175set_process_info(const char *format, ...)
176{
92b0827a 177int len = sprintf(CS process_info, "%5d ", (int)getpid());
921b12ca 178va_list ap;
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179va_start(ap, format);
180if (!string_vformat(process_info + len, PROCESS_INFO_SIZE - len - 2, format, ap))
181 Ustrcpy(process_info + len, "**** string overflowed buffer ****");
182len = Ustrlen(process_info);
183process_info[len+0] = '\n';
184process_info[len+1] = '\0';
185process_info_len = len + 1;
186DEBUG(D_process_info) debug_printf("set_process_info: %s", process_info);
187va_end(ap);
188}
189
190
191
192
193/*************************************************
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194* Handler for SIGUSR1 *
195*************************************************/
196
197/* SIGUSR1 causes any exim process to write to the process log details of
198what it is currently doing. It will only be used if the OS is capable of
199setting up a handler that causes automatic restarting of any system call
200that is in progress at the time.
201
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202This function takes care to be signal-safe.
203
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204Argument: the signal number (SIGUSR1)
205Returns: nothing
206*/
207
208static void
209usr1_handler(int sig)
210{
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211int fd;
212
213os_restarting_signal(sig, usr1_handler);
214
215fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE);
216if (fd < 0)
217 {
218 /* If we are already running as the Exim user, try to create it in the
219 current process (assuming spool_directory exists). Otherwise, if we are
220 root, do the creation in an exim:exim subprocess. */
221
222 int euid = geteuid();
223 if (euid == exim_uid)
224 fd = Uopen(process_log_path, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE);
225 else if (euid == root_uid)
226 fd = log_create_as_exim(process_log_path);
227 }
228
229/* If we are neither exim nor root, or if we failed to create the log file,
230give up. There is not much useful we can do with errors, since we don't want
231to disrupt whatever is going on outside the signal handler. */
232
233if (fd < 0) return;
234
2f21487f 235(void)write(fd, process_info, process_info_len);
921b12ca 236(void)close(fd);
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237}
238
239
240
241/*************************************************
242* Timeout handler *
243*************************************************/
244
245/* This handler is enabled most of the time that Exim is running. The handler
246doesn't actually get used unless alarm() has been called to set a timer, to
247place a time limit on a system call of some kind. When the handler is run, it
248re-enables itself.
249
250There are some other SIGALRM handlers that are used in special cases when more
251than just a flag setting is required; for example, when reading a message's
252input. These are normally set up in the code module that uses them, and the
253SIGALRM handler is reset to this one afterwards.
254
255Argument: the signal value (SIGALRM)
256Returns: nothing
257*/
258
259void
260sigalrm_handler(int sig)
261{
262sig = sig; /* Keep picky compilers happy */
263sigalrm_seen = TRUE;
264os_non_restarting_signal(SIGALRM, sigalrm_handler);
265}
266
267
268
269/*************************************************
270* Sleep for a fractional time interval *
271*************************************************/
272
273/* This function is called by millisleep() and exim_wait_tick() to wait for a
274period of time that may include a fraction of a second. The coding is somewhat
eb2c0248
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275tedious. We do not expect setitimer() ever to fail, but if it does, the process
276will wait for ever, so we panic in this instance. (There was a case of this
277when a bug in a function that calls milliwait() caused it to pass invalid data.
7086e875 278That's when I added the check. :-)
059ec3d9 279
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280We assume it to be not worth sleeping for under 100us; this value will
281require revisiting as hardware advances. This avoids the issue of
282a zero-valued timer setting meaning "never fire".
283
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284Argument: an itimerval structure containing the interval
285Returns: nothing
286*/
287
288static void
289milliwait(struct itimerval *itval)
290{
291sigset_t sigmask;
292sigset_t old_sigmask;
0f8ba377
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293
294if (itval->it_value.tv_usec < 100 && itval->it_value.tv_sec == 0)
295 return;
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296(void)sigemptyset(&sigmask); /* Empty mask */
297(void)sigaddset(&sigmask, SIGALRM); /* Add SIGALRM */
298(void)sigprocmask(SIG_BLOCK, &sigmask, &old_sigmask); /* Block SIGALRM */
7086e875 299if (setitimer(ITIMER_REAL, itval, NULL) < 0) /* Start timer */
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300 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
301 "setitimer() failed: %s", strerror(errno));
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302(void)sigfillset(&sigmask); /* All signals */
303(void)sigdelset(&sigmask, SIGALRM); /* Remove SIGALRM */
304(void)sigsuspend(&sigmask); /* Until SIGALRM */
305(void)sigprocmask(SIG_SETMASK, &old_sigmask, NULL); /* Restore mask */
306}
307
308
309
310
311/*************************************************
312* Millisecond sleep function *
313*************************************************/
314
315/* The basic sleep() function has a granularity of 1 second, which is too rough
316in some cases - for example, when using an increasing delay to slow down
317spammers.
318
319Argument: number of millseconds
320Returns: nothing
321*/
322
323void
324millisleep(int msec)
325{
326struct itimerval itval;
327itval.it_interval.tv_sec = 0;
328itval.it_interval.tv_usec = 0;
329itval.it_value.tv_sec = msec/1000;
330itval.it_value.tv_usec = (msec % 1000) * 1000;
331milliwait(&itval);
332}
333
334
335
336/*************************************************
337* Compare microsecond times *
338*************************************************/
339
340/*
341Arguments:
342 tv1 the first time
343 tv2 the second time
344
345Returns: -1, 0, or +1
346*/
347
348int
349exim_tvcmp(struct timeval *t1, struct timeval *t2)
350{
351if (t1->tv_sec > t2->tv_sec) return +1;
352if (t1->tv_sec < t2->tv_sec) return -1;
353if (t1->tv_usec > t2->tv_usec) return +1;
354if (t1->tv_usec < t2->tv_usec) return -1;
355return 0;
356}
357
358
359
360
361/*************************************************
362* Clock tick wait function *
363*************************************************/
364
365/* Exim uses a time + a pid to generate a unique identifier in two places: its
366message IDs, and in file names for maildir deliveries. Because some OS now
367re-use pids within the same second, sub-second times are now being used.
368However, for absolute certaintly, we must ensure the clock has ticked before
369allowing the relevant process to complete. At the time of implementation of
370this code (February 2003), the speed of processors is such that the clock will
371invariably have ticked already by the time a process has done its job. This
372function prepares for the time when things are faster - and it also copes with
373clocks that go backwards.
374
375Arguments:
376 then_tv A timeval which was used to create uniqueness; its usec field
377 has been rounded down to the value of the resolution.
378 We want to be sure the current time is greater than this.
379 resolution The resolution that was used to divide the microseconds
380 (1 for maildir, larger for message ids)
381
382Returns: nothing
383*/
384
385void
386exim_wait_tick(struct timeval *then_tv, int resolution)
387{
388struct timeval now_tv;
389long int now_true_usec;
390
391(void)gettimeofday(&now_tv, NULL);
392now_true_usec = now_tv.tv_usec;
393now_tv.tv_usec = (now_true_usec/resolution) * resolution;
394
395if (exim_tvcmp(&now_tv, then_tv) <= 0)
396 {
397 struct itimerval itval;
398 itval.it_interval.tv_sec = 0;
399 itval.it_interval.tv_usec = 0;
400 itval.it_value.tv_sec = then_tv->tv_sec - now_tv.tv_sec;
401 itval.it_value.tv_usec = then_tv->tv_usec + resolution - now_true_usec;
402
403 /* We know that, overall, "now" is less than or equal to "then". Therefore, a
404 negative value for the microseconds is possible only in the case when "now"
405 is more than a second less than "then". That means that itval.it_value.tv_sec
406 is greater than zero. The following correction is therefore safe. */
407
408 if (itval.it_value.tv_usec < 0)
409 {
410 itval.it_value.tv_usec += 1000000;
411 itval.it_value.tv_sec -= 1;
412 }
413
414 DEBUG(D_transport|D_receive)
415 {
416 if (!running_in_test_harness)
417 {
d0291a0a 418 debug_printf("tick check: " TIME_T_FMT ".%06lu " TIME_T_FMT ".%06lu\n",
7437665e
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419 then_tv->tv_sec, (long) then_tv->tv_usec,
420 now_tv.tv_sec, (long) now_tv.tv_usec);
d0291a0a
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421 debug_printf("waiting " TIME_T_FMT ".%06lu\n",
422 itval.it_value.tv_sec, (long) itval.it_value.tv_usec);
059ec3d9
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423 }
424 }
425
426 milliwait(&itval);
427 }
428}
429
430
431
432
433/*************************************************
2632889e
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434* Call fopen() with umask 777 and adjust mode *
435*************************************************/
436
437/* Exim runs with umask(0) so that files created with open() have the mode that
438is specified in the open() call. However, there are some files, typically in
439the spool directory, that are created with fopen(). They end up world-writeable
440if no precautions are taken. Although the spool directory is not accessible to
441the world, this is an untidiness. So this is a wrapper function for fopen()
442that sorts out the mode of the created file.
443
444Arguments:
445 filename the file name
446 options the fopen() options
447 mode the required mode
448
449Returns: the fopened FILE or NULL
450*/
451
452FILE *
1ba28e2b 453modefopen(const uschar *filename, const char *options, mode_t mode)
2632889e 454{
67d175de
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455mode_t saved_umask = umask(0777);
456FILE *f = Ufopen(filename, options);
457(void)umask(saved_umask);
2632889e
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458if (f != NULL) (void)fchmod(fileno(f), mode);
459return f;
460}
461
462
463
464
465/*************************************************
059ec3d9
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466* Ensure stdin, stdout, and stderr exist *
467*************************************************/
468
469/* Some operating systems grumble if an exec() happens without a standard
470input, output, and error (fds 0, 1, 2) being defined. The worry is that some
471file will be opened and will use these fd values, and then some other bit of
472code will assume, for example, that it can write error messages to stderr.
473This function ensures that fds 0, 1, and 2 are open if they do not already
474exist, by connecting them to /dev/null.
475
476This function is also used to ensure that std{in,out,err} exist at all times,
477so that if any library that Exim calls tries to use them, it doesn't crash.
478
479Arguments: None
480Returns: Nothing
481*/
482
483void
484exim_nullstd(void)
485{
486int i;
487int devnull = -1;
488struct stat statbuf;
489for (i = 0; i <= 2; i++)
490 {
491 if (fstat(i, &statbuf) < 0 && errno == EBADF)
492 {
493 if (devnull < 0) devnull = open("/dev/null", O_RDWR);
494 if (devnull < 0) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s",
495 string_open_failed(errno, "/dev/null"));
1fe64dcc 496 if (devnull != i) (void)dup2(devnull, i);
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497 }
498 }
1fe64dcc 499if (devnull > 2) (void)close(devnull);
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500}
501
502
503
504
505/*************************************************
506* Close unwanted file descriptors for delivery *
507*************************************************/
508
509/* This function is called from a new process that has been forked to deliver
510an incoming message, either directly, or using exec.
511
512We want any smtp input streams to be closed in this new process. However, it
513has been observed that using fclose() here causes trouble. When reading in -bS
514input, duplicate copies of messages have been seen. The files will be sharing a
515file pointer with the parent process, and it seems that fclose() (at least on
516some systems - I saw this on Solaris 2.5.1) messes with that file pointer, at
517least sometimes. Hence we go for closing the underlying file descriptors.
518
519If TLS is active, we want to shut down the TLS library, but without molesting
520the parent's SSL connection.
521
522For delivery of a non-SMTP message, we want to close stdin and stdout (and
523stderr unless debugging) because the calling process might have set them up as
524pipes and be waiting for them to close before it waits for the submission
525process to terminate. If they aren't closed, they hold up the calling process
526until the initial delivery process finishes, which is not what we want.
527
528Exception: We do want it for synchronous delivery!
529
530And notwithstanding all the above, if D_resolver is set, implying resolver
531debugging, leave stdout open, because that's where the resolver writes its
532debugging output.
533
534When we close stderr (which implies we've also closed stdout), we also get rid
535of any controlling terminal.
536
537Arguments: None
538Returns: Nothing
539*/
540
541static void
542close_unwanted(void)
543{
544if (smtp_input)
545 {
546 #ifdef SUPPORT_TLS
a400eccf 547 tls_close(TRUE, FALSE); /* Shut down the TLS library */
059ec3d9 548 #endif
1fe64dcc
PH
549 (void)close(fileno(smtp_in));
550 (void)close(fileno(smtp_out));
059ec3d9
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551 smtp_in = NULL;
552 }
553else
554 {
1fe64dcc
PH
555 (void)close(0); /* stdin */
556 if ((debug_selector & D_resolver) == 0) (void)close(1); /* stdout */
557 if (debug_selector == 0) /* stderr */
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558 {
559 if (!synchronous_delivery)
560 {
1fe64dcc 561 (void)close(2);
059ec3d9
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562 log_stderr = NULL;
563 }
564 (void)setsid();
565 }
566 }
567}
568
569
570
571
572/*************************************************
573* Set uid and gid *
574*************************************************/
575
576/* This function sets a new uid and gid permanently, optionally calling
577initgroups() to set auxiliary groups. There are some special cases when running
578Exim in unprivileged modes. In these situations the effective uid will not be
579root; if we already have the right effective uid/gid, and don't need to
580initialize any groups, leave things as they are.
581
582Arguments:
583 uid the uid
584 gid the gid
585 igflag TRUE if initgroups() wanted
586 msg text to use in debugging output and failure log
587
588Returns: nothing; bombs out on failure
589*/
590
591void
592exim_setugid(uid_t uid, gid_t gid, BOOL igflag, uschar *msg)
593{
594uid_t euid = geteuid();
595gid_t egid = getegid();
596
597if (euid == root_uid || euid != uid || egid != gid || igflag)
598 {
599 /* At least one OS returns +1 for initgroups failure, so just check for
600 non-zero. */
601
602 if (igflag)
603 {
604 struct passwd *pw = getpwuid(uid);
605 if (pw != NULL)
606 {
607 if (initgroups(pw->pw_name, gid) != 0)
608 log_write(0,LOG_MAIN|LOG_PANIC_DIE,"initgroups failed for uid=%ld: %s",
609 (long int)uid, strerror(errno));
610 }
611 else log_write(0, LOG_MAIN|LOG_PANIC_DIE, "cannot run initgroups(): "
612 "no passwd entry for uid=%ld", (long int)uid);
613 }
614
615 if (setgid(gid) < 0 || setuid(uid) < 0)
616 {
617 log_write(0, LOG_MAIN|LOG_PANIC_DIE, "unable to set gid=%ld or uid=%ld "
618 "(euid=%ld): %s", (long int)gid, (long int)uid, (long int)euid, msg);
619 }
620 }
621
622/* Debugging output included uid/gid and all groups */
623
624DEBUG(D_uid)
625 {
cd59ab18 626 int group_count, save_errno;
059ec3d9
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627 gid_t group_list[NGROUPS_MAX];
628 debug_printf("changed uid/gid: %s\n uid=%ld gid=%ld pid=%ld\n", msg,
629 (long int)geteuid(), (long int)getegid(), (long int)getpid());
630 group_count = getgroups(NGROUPS_MAX, group_list);
cd59ab18 631 save_errno = errno;
059ec3d9
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632 debug_printf(" auxiliary group list:");
633 if (group_count > 0)
634 {
635 int i;
636 for (i = 0; i < group_count; i++) debug_printf(" %d", (int)group_list[i]);
637 }
cd59ab18
PP
638 else if (group_count < 0)
639 debug_printf(" <error: %s>", strerror(save_errno));
059ec3d9
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640 else debug_printf(" <none>");
641 debug_printf("\n");
642 }
643}
644
645
646
647
648/*************************************************
649* Exit point *
650*************************************************/
651
652/* Exim exits via this function so that it always clears up any open
653databases.
654
655Arguments:
656 rc return code
657
658Returns: does not return
659*/
660
661void
662exim_exit(int rc)
663{
664search_tidyup();
665DEBUG(D_any)
666 debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d terminating with rc=%d "
667 ">>>>>>>>>>>>>>>>\n", (int)getpid(), rc);
668exit(rc);
669}
670
671
672
673
674/*************************************************
675* Extract port from host address *
676*************************************************/
677
678/* Called to extract the port from the values given to -oMa and -oMi.
b90c388a
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679It also checks the syntax of the address, and terminates it before the
680port data when a port is extracted.
059ec3d9
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681
682Argument:
683 address the address, with possible port on the end
684
685Returns: the port, or zero if there isn't one
686 bombs out on a syntax error
687*/
688
689static int
690check_port(uschar *address)
691{
7cd1141b 692int port = host_address_extract_port(address);
8e669ac1 693if (string_is_ip_address(address, NULL) == 0)
059ec3d9
PH
694 {
695 fprintf(stderr, "exim abandoned: \"%s\" is not an IP address\n", address);
696 exit(EXIT_FAILURE);
697 }
698return port;
699}
700
701
702
703/*************************************************
704* Test/verify an address *
705*************************************************/
706
707/* This function is called by the -bv and -bt code. It extracts a working
708address from a full RFC 822 address. This isn't really necessary per se, but it
709has the effect of collapsing source routes.
710
711Arguments:
712 s the address string
713 flags flag bits for verify_address()
714 exit_value to be set for failures
715
a5a28604 716Returns: nothing
059ec3d9
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717*/
718
719static void
720test_address(uschar *s, int flags, int *exit_value)
721{
722int start, end, domain;
723uschar *parse_error = NULL;
724uschar *address = parse_extract_address(s, &parse_error, &start, &end, &domain,
725 FALSE);
726if (address == NULL)
727 {
728 fprintf(stdout, "syntax error: %s\n", parse_error);
729 *exit_value = 2;
730 }
731else
732 {
733 int rc = verify_address(deliver_make_addr(address,TRUE), stdout, flags, -1,
4deaf07d 734 -1, -1, NULL, NULL, NULL);
059ec3d9
PH
735 if (rc == FAIL) *exit_value = 2;
736 else if (rc == DEFER && *exit_value == 0) *exit_value = 1;
737 }
738}
739
740
741
742/*************************************************
059ec3d9
PH
743* Show supported features *
744*************************************************/
745
4b2241d2
PP
746/* This function is called for -bV/--version and for -d to output the optional
747features of the current Exim binary.
059ec3d9
PH
748
749Arguments: a FILE for printing
750Returns: nothing
751*/
752
753static void
754show_whats_supported(FILE *f)
755{
44bbabb5
PP
756 auth_info *authi;
757
059ec3d9
PH
758#ifdef DB_VERSION_STRING
759fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING);
760#elif defined(BTREEVERSION) && defined(HASHVERSION)
761 #ifdef USE_DB
762 fprintf(f, "Probably Berkeley DB version 1.8x (native mode)\n");
763 #else
764 fprintf(f, "Probably Berkeley DB version 1.8x (compatibility mode)\n");
765 #endif
766#elif defined(_DBM_RDONLY) || defined(dbm_dirfno)
767fprintf(f, "Probably ndbm\n");
768#elif defined(USE_TDB)
769fprintf(f, "Using tdb\n");
770#else
771 #ifdef USE_GDBM
772 fprintf(f, "Probably GDBM (native mode)\n");
773 #else
774 fprintf(f, "Probably GDBM (compatibility mode)\n");
775 #endif
776#endif
777
778fprintf(f, "Support for:");
9cec981f
PH
779#ifdef SUPPORT_CRYPTEQ
780 fprintf(f, " crypteq");
781#endif
059ec3d9
PH
782#if HAVE_ICONV
783 fprintf(f, " iconv()");
784#endif
785#if HAVE_IPV6
786 fprintf(f, " IPv6");
787#endif
79378e0f
PH
788#ifdef HAVE_SETCLASSRESOURCES
789 fprintf(f, " use_setclassresources");
929ba01c 790#endif
059ec3d9
PH
791#ifdef SUPPORT_PAM
792 fprintf(f, " PAM");
793#endif
794#ifdef EXIM_PERL
795 fprintf(f, " Perl");
796#endif
1a46a8c5
PH
797#ifdef EXPAND_DLFUNC
798 fprintf(f, " Expand_dlfunc");
799#endif
059ec3d9
PH
800#ifdef USE_TCP_WRAPPERS
801 fprintf(f, " TCPwrappers");
802#endif
803#ifdef SUPPORT_TLS
804 #ifdef USE_GNUTLS
805 fprintf(f, " GnuTLS");
806 #else
807 fprintf(f, " OpenSSL");
808 #endif
809#endif
b2f5a032
PH
810#ifdef SUPPORT_TRANSLATE_IP_ADDRESS
811 fprintf(f, " translate_ip_address");
812#endif
f174f16e
PH
813#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
814 fprintf(f, " move_frozen_messages");
815#endif
8523533c
TK
816#ifdef WITH_CONTENT_SCAN
817 fprintf(f, " Content_Scanning");
818#endif
74f150bf
JH
819#ifndef DISABLE_DKIM
820 fprintf(f, " DKIM");
821#endif
ef1bbb27
HSHR
822#ifndef DISABLE_DNSSEC
823 fprintf(f, " DNSSEC");
824#endif
0cbf2b82
JH
825#ifndef DISABLE_EVENT
826 fprintf(f, " Event");
827#endif
8c5d388a
JH
828#ifdef SUPPORT_I18N
829 fprintf(f, " I18N");
830#endif
74f150bf
JH
831#ifndef DISABLE_OCSP
832 fprintf(f, " OCSP");
833#endif
4d832da1
TL
834#ifndef DISABLE_PRDR
835 fprintf(f, " PRDR");
836#endif
cee5f132
JH
837#ifdef SUPPORT_PROXY
838 fprintf(f, " PROXY");
839#endif
f0989ec0 840#ifdef SUPPORT_SOCKS
74f150bf 841 fprintf(f, " SOCKS");
f2de3a33 842#endif
5bde3efa
ACK
843#ifdef EXPERIMENTAL_LMDB
844 fprintf(f, " Experimental_LMDB");
845#endif
8523533c
TK
846#ifdef EXPERIMENTAL_SPF
847 fprintf(f, " Experimental_SPF");
848#endif
849#ifdef EXPERIMENTAL_SRS
850 fprintf(f, " Experimental_SRS");
851#endif
852#ifdef EXPERIMENTAL_BRIGHTMAIL
853 fprintf(f, " Experimental_Brightmail");
854#endif
043b1248
JH
855#ifdef EXPERIMENTAL_DANE
856 fprintf(f, " Experimental_DANE");
857#endif
6a8f9482
TK
858#ifdef EXPERIMENTAL_DCC
859 fprintf(f, " Experimental_DCC");
860#endif
4840604e
TL
861#ifdef EXPERIMENTAL_DMARC
862 fprintf(f, " Experimental_DMARC");
863#endif
895fbaf2
JH
864#ifdef EXPERIMENTAL_DSN_INFO
865 fprintf(f, " Experimental_DSN_info");
866#endif
059ec3d9
PH
867fprintf(f, "\n");
868
e6d225ae
DW
869fprintf(f, "Lookups (built-in):");
870#if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2
059ec3d9
PH
871 fprintf(f, " lsearch wildlsearch nwildlsearch iplsearch");
872#endif
e6d225ae 873#if defined(LOOKUP_CDB) && LOOKUP_CDB!=2
059ec3d9
PH
874 fprintf(f, " cdb");
875#endif
e6d225ae 876#if defined(LOOKUP_DBM) && LOOKUP_DBM!=2
4a6a987a 877 fprintf(f, " dbm dbmjz dbmnz");
059ec3d9 878#endif
e6d225ae 879#if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2
059ec3d9
PH
880 fprintf(f, " dnsdb");
881#endif
e6d225ae 882#if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2
059ec3d9
PH
883 fprintf(f, " dsearch");
884#endif
e6d225ae 885#if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2
059ec3d9
PH
886 fprintf(f, " ibase");
887#endif
e6d225ae 888#if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2
059ec3d9
PH
889 fprintf(f, " ldap ldapdn ldapm");
890#endif
5bde3efa
ACK
891#ifdef EXPERIMENTAL_LMDB
892 fprintf(f, " lmdb");
893#endif
e6d225ae 894#if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2
059ec3d9
PH
895 fprintf(f, " mysql");
896#endif
e6d225ae 897#if defined(LOOKUP_NIS) && LOOKUP_NIS!=2
059ec3d9
PH
898 fprintf(f, " nis nis0");
899#endif
e6d225ae 900#if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2
059ec3d9
PH
901 fprintf(f, " nisplus");
902#endif
e6d225ae 903#if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2
059ec3d9
PH
904 fprintf(f, " oracle");
905#endif
e6d225ae 906#if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2
059ec3d9
PH
907 fprintf(f, " passwd");
908#endif
e6d225ae 909#if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2
059ec3d9
PH
910 fprintf(f, " pgsql");
911#endif
de78e2d5
JH
912#if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2
913 fprintf(f, " redis");
914#endif
e6d225ae 915#if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2
13b685f9
PH
916 fprintf(f, " sqlite");
917#endif
e6d225ae 918#if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2
059ec3d9
PH
919 fprintf(f, " testdb");
920#endif
e6d225ae 921#if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2
059ec3d9
PH
922 fprintf(f, " whoson");
923#endif
924fprintf(f, "\n");
925
926fprintf(f, "Authenticators:");
927#ifdef AUTH_CRAM_MD5
928 fprintf(f, " cram_md5");
929#endif
930#ifdef AUTH_CYRUS_SASL
931 fprintf(f, " cyrus_sasl");
932#endif
14aa5a05
PH
933#ifdef AUTH_DOVECOT
934 fprintf(f, " dovecot");
935#endif
44bbabb5
PP
936#ifdef AUTH_GSASL
937 fprintf(f, " gsasl");
938#endif
dde3daac
PP
939#ifdef AUTH_HEIMDAL_GSSAPI
940 fprintf(f, " heimdal_gssapi");
941#endif
059ec3d9
PH
942#ifdef AUTH_PLAINTEXT
943 fprintf(f, " plaintext");
944#endif
945#ifdef AUTH_SPA
946 fprintf(f, " spa");
947#endif
b3ef41c9
JH
948#ifdef AUTH_TLS
949 fprintf(f, " tls");
950#endif
059ec3d9
PH
951fprintf(f, "\n");
952
953fprintf(f, "Routers:");
954#ifdef ROUTER_ACCEPT
955 fprintf(f, " accept");
956#endif
957#ifdef ROUTER_DNSLOOKUP
958 fprintf(f, " dnslookup");
959#endif
960#ifdef ROUTER_IPLITERAL
961 fprintf(f, " ipliteral");
962#endif
963#ifdef ROUTER_IPLOOKUP
964 fprintf(f, " iplookup");
965#endif
966#ifdef ROUTER_MANUALROUTE
967 fprintf(f, " manualroute");
968#endif
969#ifdef ROUTER_QUERYPROGRAM
970 fprintf(f, " queryprogram");
971#endif
972#ifdef ROUTER_REDIRECT
973 fprintf(f, " redirect");
974#endif
975fprintf(f, "\n");
976
977fprintf(f, "Transports:");
978#ifdef TRANSPORT_APPENDFILE
979 fprintf(f, " appendfile");
980 #ifdef SUPPORT_MAILDIR
981 fprintf(f, "/maildir");
982 #endif
983 #ifdef SUPPORT_MAILSTORE
984 fprintf(f, "/mailstore");
985 #endif
986 #ifdef SUPPORT_MBX
987 fprintf(f, "/mbx");
988 #endif
989#endif
990#ifdef TRANSPORT_AUTOREPLY
991 fprintf(f, " autoreply");
992#endif
993#ifdef TRANSPORT_LMTP
994 fprintf(f, " lmtp");
995#endif
996#ifdef TRANSPORT_PIPE
997 fprintf(f, " pipe");
998#endif
999#ifdef TRANSPORT_SMTP
1000 fprintf(f, " smtp");
1001#endif
1002fprintf(f, "\n");
1003
1004if (fixed_never_users[0] > 0)
1005 {
1006 int i;
1007 fprintf(f, "Fixed never_users: ");
1008 for (i = 1; i <= (int)fixed_never_users[0] - 1; i++)
1009 fprintf(f, "%d:", (unsigned int)fixed_never_users[i]);
1010 fprintf(f, "%d\n", (unsigned int)fixed_never_users[i]);
1011 }
21c28500 1012
73a46702 1013fprintf(f, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t));
36f12725 1014
6545de78
PP
1015/* Everything else is details which are only worth reporting when debugging.
1016Perhaps the tls_version_report should move into this too. */
1017DEBUG(D_any) do {
1018
1019 int i;
1020
b3c261f7
PP
1021/* clang defines __GNUC__ (at least, for me) so test for it first */
1022#if defined(__clang__)
1023 fprintf(f, "Compiler: CLang [%s]\n", __clang_version__);
1024#elif defined(__GNUC__)
1025 fprintf(f, "Compiler: GCC [%s]\n",
1026# ifdef __VERSION__
1027 __VERSION__
1028# else
1029 "? unknown version ?"
1030# endif
1031 );
1032#else
1033 fprintf(f, "Compiler: <unknown>\n");
1034#endif
1035
01f3091a
JH
1036#ifdef __GLIBC__
1037 fprintf(f, "Library version: Glibc: Compile: %d.%d\n",
1038 __GLIBC__, __GLIBC_MINOR__);
1039 if (__GLIBC_PREREQ(2, 1))
1040 fprintf(f, " Runtime: %s\n",
1041 gnu_get_libc_version());
1042#endif
1043
754a0503
PP
1044#ifdef SUPPORT_TLS
1045 tls_version_report(f);
1046#endif
8c5d388a 1047#ifdef SUPPORT_I18N
b04be5e7
JH
1048 utf8_version_report(f);
1049#endif
754a0503 1050
fc362fc5
JH
1051 for (authi = auths_available; *authi->driver_name != '\0'; ++authi)
1052 if (authi->version_report)
44bbabb5 1053 (*authi->version_report)(f);
6545de78 1054
decd95cb 1055 /* PCRE_PRERELEASE is either defined and empty or a bare sequence of
6475bd82
PP
1056 characters; unless it's an ancient version of PCRE in which case it
1057 is not defined. */
1058#ifndef PCRE_PRERELEASE
01f3091a 1059# define PCRE_PRERELEASE
6475bd82
PP
1060#endif
1061#define QUOTE(X) #X
1062#define EXPAND_AND_QUOTE(X) QUOTE(X)
6545de78
PP
1063 fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n"
1064 " Runtime: %s\n",
1065 PCRE_MAJOR, PCRE_MINOR,
6475bd82 1066 EXPAND_AND_QUOTE(PCRE_PRERELEASE) "",
6545de78 1067 pcre_version());
6475bd82
PP
1068#undef QUOTE
1069#undef EXPAND_AND_QUOTE
6545de78
PP
1070
1071 init_lookup_list();
1072 for (i = 0; i < lookup_list_count; i++)
6545de78
PP
1073 if (lookup_list[i]->version_report)
1074 lookup_list[i]->version_report(f);
6545de78 1075
b70d2586
PP
1076#ifdef WHITELIST_D_MACROS
1077 fprintf(f, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS);
1078#else
1079 fprintf(f, "WHITELIST_D_MACROS unset\n");
1080#endif
1081#ifdef TRUSTED_CONFIG_LIST
1082 fprintf(f, "TRUSTED_CONFIG_LIST: \"%s\"\n", TRUSTED_CONFIG_LIST);
1083#else
1084 fprintf(f, "TRUSTED_CONFIG_LIST unset\n");
1085#endif
1086
6545de78 1087} while (0);
059ec3d9
PH
1088}
1089
1090
98a90c36
PP
1091/*************************************************
1092* Show auxiliary information about Exim *
1093*************************************************/
1094
1095static void
1096show_exim_information(enum commandline_info request, FILE *stream)
1097{
1098const uschar **pp;
1099
1100switch(request)
1101 {
1102 case CMDINFO_NONE:
1103 fprintf(stream, "Oops, something went wrong.\n");
1104 return;
1105 case CMDINFO_HELP:
1106 fprintf(stream,
1107"The -bI: flag takes a string indicating which information to provide.\n"
1108"If the string is not recognised, you'll get this help (on stderr).\n"
1109"\n"
1110" exim -bI:help this information\n"
36a3ae5f 1111" exim -bI:dscp dscp value keywords known\n"
98a90c36
PP
1112" exim -bI:sieve list of supported sieve extensions, one per line.\n"
1113);
1114 return;
1115 case CMDINFO_SIEVE:
1116 for (pp = exim_sieve_extension_list; *pp; ++pp)
1117 fprintf(stream, "%s\n", *pp);
1118 return;
36a3ae5f
PP
1119 case CMDINFO_DSCP:
1120 dscp_list_to_stream(stream);
1121 return;
98a90c36
PP
1122 }
1123}
059ec3d9
PH
1124
1125
1126/*************************************************
1127* Quote a local part *
1128*************************************************/
1129
1130/* This function is used when a sender address or a From: or Sender: header
1131line is being created from the caller's login, or from an authenticated_id. It
1132applies appropriate quoting rules for a local part.
1133
1134Argument: the local part
1135Returns: the local part, quoted if necessary
1136*/
1137
1138uschar *
1139local_part_quote(uschar *lpart)
1140{
1141BOOL needs_quote = FALSE;
1142int size, ptr;
1143uschar *yield;
1144uschar *t;
1145
1146for (t = lpart; !needs_quote && *t != 0; t++)
1147 {
1148 needs_quote = !isalnum(*t) && strchr("!#$%&'*+-/=?^_`{|}~", *t) == NULL &&
1149 (*t != '.' || t == lpart || t[1] == 0);
1150 }
1151
1152if (!needs_quote) return lpart;
1153
1154size = ptr = 0;
c2f669a4 1155yield = string_catn(NULL, &size, &ptr, US"\"", 1);
059ec3d9
PH
1156
1157for (;;)
1158 {
1159 uschar *nq = US Ustrpbrk(lpart, "\\\"");
1160 if (nq == NULL)
1161 {
c2f669a4 1162 yield = string_cat(yield, &size, &ptr, lpart);
059ec3d9
PH
1163 break;
1164 }
c2f669a4
JH
1165 yield = string_catn(yield, &size, &ptr, lpart, nq - lpart);
1166 yield = string_catn(yield, &size, &ptr, US"\\", 1);
1167 yield = string_catn(yield, &size, &ptr, nq, 1);
059ec3d9
PH
1168 lpart = nq + 1;
1169 }
1170
c2f669a4 1171yield = string_catn(yield, &size, &ptr, US"\"", 1);
059ec3d9
PH
1172yield[ptr] = 0;
1173return yield;
1174}
1175
1176
1177
1178#ifdef USE_READLINE
1179/*************************************************
1180* Load readline() functions *
1181*************************************************/
1182
1183/* This function is called from testing executions that read data from stdin,
1184but only when running as the calling user. Currently, only -be does this. The
1185function loads the readline() function library and passes back the functions.
1186On some systems, it needs the curses library, so load that too, but try without
1187it if loading fails. All this functionality has to be requested at build time.
1188
1189Arguments:
1190 fn_readline_ptr pointer to where to put the readline pointer
1191 fn_addhist_ptr pointer to where to put the addhistory function
1192
1193Returns: the dlopen handle or NULL on failure
1194*/
1195
1196static void *
1ba28e2b
PP
1197set_readline(char * (**fn_readline_ptr)(const char *),
1198 void (**fn_addhist_ptr)(const char *))
059ec3d9
PH
1199{
1200void *dlhandle;
e12f8c32 1201void *dlhandle_curses = dlopen("libcurses." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_LAZY);
059ec3d9 1202
e12f8c32 1203dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW);
059ec3d9
PH
1204if (dlhandle_curses != NULL) dlclose(dlhandle_curses);
1205
1206if (dlhandle != NULL)
1207 {
1ba28e2b
PP
1208 /* Checked manual pages; at least in GNU Readline 6.1, the prototypes are:
1209 * char * readline (const char *prompt);
1210 * void add_history (const char *string);
1211 */
1212 *fn_readline_ptr = (char *(*)(const char*))dlsym(dlhandle, "readline");
1213 *fn_addhist_ptr = (void(*)(const char*))dlsym(dlhandle, "add_history");
059ec3d9
PH
1214 }
1215else
1216 {
1217 DEBUG(D_any) debug_printf("failed to load readline: %s\n", dlerror());
1218 }
1219
1220return dlhandle;
1221}
1222#endif
1223
1224
1225
1226/*************************************************
1227* Get a line from stdin for testing things *
1228*************************************************/
1229
1230/* This function is called when running tests that can take a number of lines
1231of input (for example, -be and -bt). It handles continuations and trailing
1232spaces. And prompting and a blank line output on eof. If readline() is in use,
1233the arguments are non-NULL and provide the relevant functions.
1234
1235Arguments:
1236 fn_readline readline function or NULL
1237 fn_addhist addhist function or NULL
1238
1239Returns: pointer to dynamic memory, or NULL at end of file
1240*/
1241
1242static uschar *
1ba28e2b 1243get_stdinput(char *(*fn_readline)(const char *), void(*fn_addhist)(const char *))
059ec3d9
PH
1244{
1245int i;
1246int size = 0;
1247int ptr = 0;
1248uschar *yield = NULL;
1249
328895cc 1250if (fn_readline == NULL) { printf("> "); fflush(stdout); }
059ec3d9
PH
1251
1252for (i = 0;; i++)
1253 {
1254 uschar buffer[1024];
1255 uschar *p, *ss;
1256
1257 #ifdef USE_READLINE
1258 char *readline_line = NULL;
1259 if (fn_readline != NULL)
1260 {
1261 if ((readline_line = fn_readline((i > 0)? "":"> ")) == NULL) break;
1262 if (*readline_line != 0 && fn_addhist != NULL) fn_addhist(readline_line);
1263 p = US readline_line;
1264 }
1265 else
1266 #endif
1267
1268 /* readline() not in use */
1269
1270 {
1271 if (Ufgets(buffer, sizeof(buffer), stdin) == NULL) break;
1272 p = buffer;
1273 }
1274
1275 /* Handle the line */
1276
1277 ss = p + (int)Ustrlen(p);
1278 while (ss > p && isspace(ss[-1])) ss--;
1279
1280 if (i > 0)
1281 {
1282 while (p < ss && isspace(*p)) p++; /* leading space after cont */
1283 }
1284
c2f669a4 1285 yield = string_catn(yield, &size, &ptr, p, ss - p);
059ec3d9
PH
1286
1287 #ifdef USE_READLINE
1288 if (fn_readline != NULL) free(readline_line);
1289 #endif
1290
5f5be492 1291 /* yield can only be NULL if ss==p */
059ec3d9
PH
1292 if (ss == p || yield[ptr-1] != '\\')
1293 {
5f5be492 1294 if (yield) yield[ptr] = 0;
059ec3d9
PH
1295 break;
1296 }
1297 yield[--ptr] = 0;
1298 }
1299
1300if (yield == NULL) printf("\n");
1301return yield;
1302}
1303
1304
1305
1306/*************************************************
81ea09ca
NM
1307* Output usage information for the program *
1308*************************************************/
1309
1310/* This function is called when there are no recipients
1311 or a specific --help argument was added.
1312
1313Arguments:
1314 progname information on what name we were called by
1315
1316Returns: DOES NOT RETURN
1317*/
1318
1319static void
1320exim_usage(uschar *progname)
1321{
1322
1323/* Handle specific program invocation varients */
1324if (Ustrcmp(progname, US"-mailq") == 0)
1325 {
1326 fprintf(stderr,
e765a0f1 1327 "mailq - list the contents of the mail queue\n\n"
81ea09ca
NM
1328 "For a list of options, see the Exim documentation.\n");
1329 exit(EXIT_FAILURE);
1330 }
1331
1332/* Generic usage - we output this whatever happens */
1333fprintf(stderr,
1334 "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n"
1335 "not directly from a shell command line. Options and/or arguments control\n"
1336 "what it does when called. For a list of options, see the Exim documentation.\n");
1337
1338exit(EXIT_FAILURE);
1339}
1340
1341
1342
1343/*************************************************
a7cbbf50
PP
1344* Validate that the macros given are okay *
1345*************************************************/
1346
1347/* Typically, Exim will drop privileges if macros are supplied. In some
1348cases, we want to not do so.
1349
1350Arguments: none (macros is a global)
1351Returns: true if trusted, false otherwise
1352*/
1353
1354static BOOL
1355macros_trusted(void)
1356{
1357#ifdef WHITELIST_D_MACROS
1358macro_item *m;
1359uschar *whitelisted, *end, *p, **whites, **w;
1360int white_count, i, n;
1361size_t len;
1362BOOL prev_char_item, found;
1363#endif
1364
1365if (macros == NULL)
1366 return TRUE;
1367#ifndef WHITELIST_D_MACROS
1368return FALSE;
1369#else
1370
66581d1e
PP
1371/* We only trust -D overrides for some invoking users:
1372root, the exim run-time user, the optional config owner user.
1373I don't know why config-owner would be needed, but since they can own the
1374config files anyway, there's no security risk to letting them override -D. */
1375if ( ! ((real_uid == root_uid)
1376 || (real_uid == exim_uid)
1377#ifdef CONFIGURE_OWNER
1378 || (real_uid == config_uid)
1379#endif
1380 ))
1381 {
1382 debug_printf("macros_trusted rejecting macros for uid %d\n", (int) real_uid);
1383 return FALSE;
1384 }
1385
a7cbbf50
PP
1386/* Get a list of macros which are whitelisted */
1387whitelisted = string_copy_malloc(US WHITELIST_D_MACROS);
1388prev_char_item = FALSE;
1389white_count = 0;
1390for (p = whitelisted; *p != '\0'; ++p)
1391 {
1392 if (*p == ':' || isspace(*p))
1393 {
1394 *p = '\0';
1395 if (prev_char_item)
1396 ++white_count;
1397 prev_char_item = FALSE;
1398 continue;
1399 }
1400 if (!prev_char_item)
1401 prev_char_item = TRUE;
1402 }
1403end = p;
1404if (prev_char_item)
1405 ++white_count;
1406if (!white_count)
1407 return FALSE;
1408whites = store_malloc(sizeof(uschar *) * (white_count+1));
1409for (p = whitelisted, i = 0; (p != end) && (i < white_count); ++p)
1410 {
1411 if (*p != '\0')
1412 {
1413 whites[i++] = p;
1414 if (i == white_count)
1415 break;
1416 while (*p != '\0' && p < end)
1417 ++p;
1418 }
1419 }
1420whites[i] = NULL;
1421
c193398d
JH
1422/* The list of commandline macros should be very short.
1423Accept the N*M complexity. */
1424for (m = macros; m; m = m->next) if (m->command_line)
a7cbbf50
PP
1425 {
1426 found = FALSE;
1427 for (w = whites; *w; ++w)
1428 if (Ustrcmp(*w, m->name) == 0)
1429 {
1430 found = TRUE;
1431 break;
1432 }
1433 if (!found)
1434 return FALSE;
1435 if (m->replacement == NULL)
1436 continue;
1437 len = Ustrlen(m->replacement);
1438 if (len == 0)
1439 continue;
1440 n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len,
1441 0, PCRE_EOPT, NULL, 0);
1442 if (n < 0)
1443 {
1444 if (n != PCRE_ERROR_NOMATCH)
1445 debug_printf("macros_trusted checking %s returned %d\n", m->name, n);
1446 return FALSE;
1447 }
1448 }
43236f35 1449DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n");
a7cbbf50
PP
1450return TRUE;
1451#endif
1452}
1453
1454
1455/*************************************************
059ec3d9
PH
1456* Entry point and high-level code *
1457*************************************************/
1458
1459/* Entry point for the Exim mailer. Analyse the arguments and arrange to take
1460the appropriate action. All the necessary functions are present in the one
1461binary. I originally thought one should split it up, but it turns out that so
1462much of the apparatus is needed in each chunk that one might as well just have
1463it all available all the time, which then makes the coding easier as well.
1464
1465Arguments:
1466 argc count of entries in argv
1467 argv argument strings, with argv[0] being the program name
1468
1469Returns: EXIT_SUCCESS if terminated successfully
1470 EXIT_FAILURE otherwise, except when a message has been sent
1471 to the sender, and -oee was given
1472*/
1473
1474int
1475main(int argc, char **cargv)
1476{
1477uschar **argv = USS cargv;
1478int arg_receive_timeout = -1;
1479int arg_smtp_receive_timeout = -1;
1480int arg_error_handling = error_handling;
f05da2e8
PH
1481int filter_sfd = -1;
1482int filter_ufd = -1;
059ec3d9 1483int group_count;
1670ef10 1484int i, rv;
059ec3d9
PH
1485int list_queue_option = 0;
1486int msg_action = 0;
1487int msg_action_arg = -1;
1488int namelen = (argv[0] == NULL)? 0 : Ustrlen(argv[0]);
1489int queue_only_reason = 0;
1490#ifdef EXIM_PERL
1491int perl_start_option = 0;
1492#endif
1493int recipients_arg = argc;
1494int sender_address_domain = 0;
1495int test_retry_arg = -1;
1496int test_rewrite_arg = -1;
1497BOOL arg_queue_only = FALSE;
1498BOOL bi_option = FALSE;
1499BOOL checking = FALSE;
1500BOOL count_queue = FALSE;
1501BOOL expansion_test = FALSE;
1502BOOL extract_recipients = FALSE;
f4ee74ac 1503BOOL flag_G = FALSE;
12f69989 1504BOOL flag_n = FALSE;
059ec3d9
PH
1505BOOL forced_delivery = FALSE;
1506BOOL f_end_dot = FALSE;
1507BOOL deliver_give_up = FALSE;
1508BOOL list_queue = FALSE;
1509BOOL list_options = FALSE;
bf3c2c6b 1510BOOL list_config = FALSE;
059ec3d9
PH
1511BOOL local_queue_only;
1512BOOL more = TRUE;
1513BOOL one_msg_action = FALSE;
4ab69ec7 1514BOOL opt_D_used = FALSE;
059ec3d9
PH
1515BOOL queue_only_set = FALSE;
1516BOOL receiving_message = TRUE;
33d73e3b 1517BOOL sender_ident_set = FALSE;
8669f003 1518BOOL session_local_queue_only;
059ec3d9
PH
1519BOOL unprivileged;
1520BOOL removed_privilege = FALSE;
81ea09ca 1521BOOL usage_wanted = FALSE;
059ec3d9
PH
1522BOOL verify_address_mode = FALSE;
1523BOOL verify_as_sender = FALSE;
1524BOOL version_printed = FALSE;
1525uschar *alias_arg = NULL;
1526uschar *called_as = US"";
a3fb9793 1527uschar *cmdline_syslog_name = NULL;
059ec3d9
PH
1528uschar *start_queue_run_id = NULL;
1529uschar *stop_queue_run_id = NULL;
328895cc 1530uschar *expansion_test_message = NULL;
059ec3d9
PH
1531uschar *ftest_domain = NULL;
1532uschar *ftest_localpart = NULL;
1533uschar *ftest_prefix = NULL;
1534uschar *ftest_suffix = NULL;
0ad2e0fc 1535uschar *log_oneline = NULL;
8544e77a 1536uschar *malware_test_file = NULL;
059ec3d9
PH
1537uschar *real_sender_address;
1538uschar *originator_home = US"/";
a3fb9793 1539size_t sz;
059ec3d9
PH
1540void *reset_point;
1541
1542struct passwd *pw;
1543struct stat statbuf;
1544pid_t passed_qr_pid = (pid_t)0;
1545int passed_qr_pipe = -1;
1546gid_t group_list[NGROUPS_MAX];
1547
98a90c36
PP
1548/* For the -bI: flag */
1549enum commandline_info info_flag = CMDINFO_NONE;
1550BOOL info_stdout = FALSE;
1551
059ec3d9
PH
1552/* Possible options for -R and -S */
1553
1554static uschar *rsopts[] = { US"f", US"ff", US"r", US"rf", US"rff" };
1555
1556/* Need to define this in case we need to change the environment in order
1557to get rid of a bogus time zone. We have to make it char rather than uschar
1558because some OS define it in /usr/include/unistd.h. */
1559
1560extern char **environ;
1561
35edf2ff 1562/* If the Exim user and/or group and/or the configuration file owner/group were
059ec3d9
PH
1563defined by ref:name at build time, we must now find the actual uid/gid values.
1564This is a feature to make the lives of binary distributors easier. */
1565
1566#ifdef EXIM_USERNAME
1567if (route_finduser(US EXIM_USERNAME, &pw, &exim_uid))
1568 {
10385c15
PP
1569 if (exim_uid == 0)
1570 {
1571 fprintf(stderr, "exim: refusing to run with uid 0 for \"%s\"\n",
1572 EXIM_USERNAME);
1573 exit(EXIT_FAILURE);
1574 }
084c1d8c
PP
1575 /* If ref:name uses a number as the name, route_finduser() returns
1576 TRUE with exim_uid set and pw coerced to NULL. */
1577 if (pw)
1578 exim_gid = pw->pw_gid;
1579#ifndef EXIM_GROUPNAME
1580 else
1581 {
1582 fprintf(stderr,
1583 "exim: ref:name should specify a usercode, not a group.\n"
1584 "exim: can't let you get away with it unless you also specify a group.\n");
1585 exit(EXIT_FAILURE);
1586 }
1587#endif
059ec3d9
PH
1588 }
1589else
1590 {
1591 fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n",
1592 EXIM_USERNAME);
1593 exit(EXIT_FAILURE);
1594 }
1595#endif
1596
1597#ifdef EXIM_GROUPNAME
1598if (!route_findgroup(US EXIM_GROUPNAME, &exim_gid))
1599 {
1600 fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n",
1601 EXIM_GROUPNAME);
1602 exit(EXIT_FAILURE);
1603 }
1604#endif
1605
1606#ifdef CONFIGURE_OWNERNAME
1607if (!route_finduser(US CONFIGURE_OWNERNAME, NULL, &config_uid))
1608 {
1609 fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n",
1610 CONFIGURE_OWNERNAME);
1611 exit(EXIT_FAILURE);
1612 }
1613#endif
1614
79d4bc3d
PP
1615/* We default the system_filter_user to be the Exim run-time user, as a
1616sane non-root value. */
1617system_filter_uid = exim_uid;
1618
35edf2ff
PH
1619#ifdef CONFIGURE_GROUPNAME
1620if (!route_findgroup(US CONFIGURE_GROUPNAME, &config_gid))
1621 {
1622 fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n",
1623 CONFIGURE_GROUPNAME);
1624 exit(EXIT_FAILURE);
1625 }
1626#endif
1627
92e6a3d9
JH
1628/* In the Cygwin environment, some initialization used to need doing.
1629It was fudged in by means of this macro; now no longer but we'll leave
1630it in case of others. */
059ec3d9
PH
1631
1632#ifdef OS_INIT
1633OS_INIT
1634#endif
1635
1636/* Check a field which is patched when we are running Exim within its
1637testing harness; do a fast initial check, and then the whole thing. */
1638
1639running_in_test_harness =
1640 *running_status == '<' && Ustrcmp(running_status, "<<<testing>>>") == 0;
1641
1642/* The C standard says that the equivalent of setlocale(LC_ALL, "C") is obeyed
1643at the start of a program; however, it seems that some environments do not
1644follow this. A "strange" locale can affect the formatting of timestamps, so we
1645make quite sure. */
1646
1647setlocale(LC_ALL, "C");
1648
1649/* Set up the default handler for timing using alarm(). */
1650
1651os_non_restarting_signal(SIGALRM, sigalrm_handler);
1652
1653/* Ensure we have a buffer for constructing log entries. Use malloc directly,
1654because store_malloc writes a log entry on failure. */
1655
40c90bca 1656if (!(log_buffer = US malloc(LOG_BUFFER_SIZE)))
059ec3d9
PH
1657 {
1658 fprintf(stderr, "exim: failed to get store for log buffer\n");
1659 exit(EXIT_FAILURE);
1660 }
1661
6c6d6e48
TF
1662/* Initialize the default log options. */
1663
1664bits_set(log_selector, log_selector_size, log_default);
1665
059ec3d9
PH
1666/* Set log_stderr to stderr, provided that stderr exists. This gets reset to
1667NULL when the daemon is run and the file is closed. We have to use this
1668indirection, because some systems don't allow writing to the variable "stderr".
1669*/
1670
1671if (fstat(fileno(stderr), &statbuf) >= 0) log_stderr = stderr;
1672
1673/* Arrange for the PCRE regex library to use our store functions. Note that
1674the normal calls are actually macros that add additional arguments for
1675debugging purposes so we have to assign specially constructed functions here.
1676The default is to use store in the stacking pool, but this is overridden in the
1677regex_must_compile() function. */
1678
1679pcre_malloc = function_store_get;
1680pcre_free = function_dummy_free;
1681
1682/* Ensure there is a big buffer for temporary use in several places. It is put
1683in malloc store so that it can be freed for enlargement if necessary. */
1684
1685big_buffer = store_malloc(big_buffer_size);
1686
1687/* Set up the handler for the data request signal, and set the initial
1688descriptive text. */
1689
1690set_process_info("initializing");
c0b9d3e8
JH
1691readconf_features();
1692readconf_options();
059ec3d9
PH
1693os_restarting_signal(SIGUSR1, usr1_handler);
1694
1695/* SIGHUP is used to get the daemon to reconfigure. It gets set as appropriate
1696in the daemon code. For the rest of Exim's uses, we ignore it. */
1697
1698signal(SIGHUP, SIG_IGN);
1699
1700/* We don't want to die on pipe errors as the code is written to handle
1701the write error instead. */
1702
1703signal(SIGPIPE, SIG_IGN);
1704
1705/* Under some circumstance on some OS, Exim can get called with SIGCHLD
1706set to SIG_IGN. This causes subprocesses that complete before the parent
1707process waits for them not to hang around, so when Exim calls wait(), nothing
1708is there. The wait() code has been made robust against this, but let's ensure
1709that SIGCHLD is set to SIG_DFL, because it's tidier to wait and get a process
1710ending status. We use sigaction rather than plain signal() on those OS where
1711SA_NOCLDWAIT exists, because we want to be sure it is turned off. (There was a
1712problem on AIX with this.) */
1713
1714#ifdef SA_NOCLDWAIT
1715 {
1716 struct sigaction act;
1717 act.sa_handler = SIG_DFL;
1718 sigemptyset(&(act.sa_mask));
1719 act.sa_flags = 0;
1720 sigaction(SIGCHLD, &act, NULL);
1721 }
1722#else
1723signal(SIGCHLD, SIG_DFL);
1724#endif
1725
1726/* Save the arguments for use if we re-exec exim as a daemon after receiving
1727SIGHUP. */
1728
1729sighup_argv = argv;
1730
1731/* Set up the version number. Set up the leading 'E' for the external form of
1732message ids, set the pointer to the internal form, and initialize it to
1733indicate no message being processed. */
1734
1735version_init();
1736message_id_option[0] = '-';
1737message_id_external = message_id_option + 1;
1738message_id_external[0] = 'E';
1739message_id = message_id_external + 1;
1740message_id[0] = 0;
1741
67d175de 1742/* Set the umask to zero so that any files Exim creates using open() are
2632889e
PH
1743created with the modes that it specifies. NOTE: Files created with fopen() have
1744a problem, which was not recognized till rather late (February 2006). With this
1745umask, such files will be world writeable. (They are all content scanning files
1746in the spool directory, which isn't world-accessible, so this is not a
1747disaster, but it's untidy.) I don't want to change this overall setting,
1748however, because it will interact badly with the open() calls. Instead, there's
1749now a function called modefopen() that fiddles with the umask while calling
1750fopen(). */
059ec3d9 1751
67d175de 1752(void)umask(0);
059ec3d9
PH
1753
1754/* Precompile the regular expression for matching a message id. Keep this in
1755step with the code that generates ids in the accept.c module. We need to do
1756this here, because the -M options check their arguments for syntactic validity
1757using mac_ismsgid, which uses this. */
1758
1759regex_ismsgid =
1760 regex_must_compile(US"^(?:[^\\W_]{6}-){2}[^\\W_]{2}$", FALSE, TRUE);
1761
a5bd321b 1762/* Precompile the regular expression that is used for matching an SMTP error
d6a96edc
PH
1763code, possibly extended, at the start of an error message. Note that the
1764terminating whitespace character is included. */
a5bd321b
PH
1765
1766regex_smtp_code =
1767 regex_must_compile(US"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?",
1768 FALSE, TRUE);
1769
a7cbbf50
PP
1770#ifdef WHITELIST_D_MACROS
1771/* Precompile the regular expression used to filter the content of macros
1772given to -D for permissibility. */
1773
1774regex_whitelisted_macro =
1775 regex_must_compile(US"^[A-Za-z0-9_/.-]*$", FALSE, TRUE);
1776#endif
1777
f38917cc
JH
1778for (i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL;
1779
059ec3d9
PH
1780/* If the program is called as "mailq" treat it as equivalent to "exim -bp";
1781this seems to be a generally accepted convention, since one finds symbolic
1782links called "mailq" in standard OS configurations. */
1783
1784if ((namelen == 5 && Ustrcmp(argv[0], "mailq") == 0) ||
1785 (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/mailq", 6) == 0))
1786 {
1787 list_queue = TRUE;
1788 receiving_message = FALSE;
1789 called_as = US"-mailq";
1790 }
1791
1792/* If the program is called as "rmail" treat it as equivalent to
1793"exim -i -oee", thus allowing UUCP messages to be input using non-SMTP mode,
1794i.e. preventing a single dot on a line from terminating the message, and
1795returning with zero return code, even in cases of error (provided an error
1796message has been sent). */
1797
1798if ((namelen == 5 && Ustrcmp(argv[0], "rmail") == 0) ||
1799 (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rmail", 6) == 0))
1800 {
1801 dot_ends = FALSE;
1802 called_as = US"-rmail";
1803 errors_sender_rc = EXIT_SUCCESS;
1804 }
1805
1806/* If the program is called as "rsmtp" treat it as equivalent to "exim -bS";
1807this is a smail convention. */
1808
1809if ((namelen == 5 && Ustrcmp(argv[0], "rsmtp") == 0) ||
1810 (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rsmtp", 6) == 0))
1811 {
1812 smtp_input = smtp_batched_input = TRUE;
1813 called_as = US"-rsmtp";
1814 }
1815
1816/* If the program is called as "runq" treat it as equivalent to "exim -q";
1817this is a smail convention. */
1818
1819if ((namelen == 4 && Ustrcmp(argv[0], "runq") == 0) ||
1820 (namelen > 4 && Ustrncmp(argv[0] + namelen - 5, "/runq", 5) == 0))
1821 {
1822 queue_interval = 0;
1823 receiving_message = FALSE;
1824 called_as = US"-runq";
1825 }
1826
1827/* If the program is called as "newaliases" treat it as equivalent to
1828"exim -bi"; this is a sendmail convention. */
1829
1830if ((namelen == 10 && Ustrcmp(argv[0], "newaliases") == 0) ||
1831 (namelen > 10 && Ustrncmp(argv[0] + namelen - 11, "/newaliases", 11) == 0))
1832 {
1833 bi_option = TRUE;
1834 receiving_message = FALSE;
1835 called_as = US"-newaliases";
1836 }
1837
1838/* Save the original effective uid for a couple of uses later. It should
1839normally be root, but in some esoteric environments it may not be. */
1840
1841original_euid = geteuid();
1842
1843/* Get the real uid and gid. If the caller is root, force the effective uid/gid
1844to be the same as the real ones. This makes a difference only if Exim is setuid
1845(or setgid) to something other than root, which could be the case in some
1846special configurations. */
1847
1848real_uid = getuid();
1849real_gid = getgid();
1850
1851if (real_uid == root_uid)
1852 {
1670ef10
PP
1853 rv = setgid(real_gid);
1854 if (rv)
1855 {
1856 fprintf(stderr, "exim: setgid(%ld) failed: %s\n",
1857 (long int)real_gid, strerror(errno));
1858 exit(EXIT_FAILURE);
1859 }
1860 rv = setuid(real_uid);
1861 if (rv)
1862 {
1863 fprintf(stderr, "exim: setuid(%ld) failed: %s\n",
1864 (long int)real_uid, strerror(errno));
1865 exit(EXIT_FAILURE);
1866 }
059ec3d9
PH
1867 }
1868
1869/* If neither the original real uid nor the original euid was root, Exim is
1870running in an unprivileged state. */
1871
1872unprivileged = (real_uid != root_uid && original_euid != root_uid);
1873
059ec3d9
PH
1874/* Scan the program's arguments. Some can be dealt with right away; others are
1875simply recorded for checking and handling afterwards. Do a high-level switch
1876on the second character (the one after '-'), to save some effort. */
1877
1878for (i = 1; i < argc; i++)
1879 {
1880 BOOL badarg = FALSE;
1881 uschar *arg = argv[i];
1882 uschar *argrest;
1883 int switchchar;
1884
1885 /* An argument not starting with '-' is the start of a recipients list;
1886 break out of the options-scanning loop. */
1887
1888 if (arg[0] != '-')
1889 {
1890 recipients_arg = i;
1891 break;
1892 }
1893
1894 /* An option consistion of -- terminates the options */
1895
1896 if (Ustrcmp(arg, "--") == 0)
1897 {
1898 recipients_arg = i + 1;
1899 break;
1900 }
1901
1902 /* Handle flagged options */
1903
1904 switchchar = arg[1];
1905 argrest = arg+2;
1906
1907 /* Make all -ex options synonymous with -oex arguments, since that
1908 is assumed by various callers. Also make -qR options synonymous with -R
1909 options, as that seems to be required as well. Allow for -qqR too, and
1910 the same for -S options. */
1911
1912 if (Ustrncmp(arg+1, "oe", 2) == 0 ||
1913 Ustrncmp(arg+1, "qR", 2) == 0 ||
1914 Ustrncmp(arg+1, "qS", 2) == 0)
1915 {
1916 switchchar = arg[2];
1917 argrest++;
1918 }
1919 else if (Ustrncmp(arg+1, "qqR", 3) == 0 || Ustrncmp(arg+1, "qqS", 3) == 0)
1920 {
1921 switchchar = arg[3];
1922 argrest += 2;
1923 queue_2stage = TRUE;
1924 }
1925
1926 /* Make -r synonymous with -f, since it is a documented alias */
1927
1928 else if (arg[1] == 'r') switchchar = 'f';
1929
1930 /* Make -ov synonymous with -v */
1931
1932 else if (Ustrcmp(arg, "-ov") == 0)
1933 {
1934 switchchar = 'v';
1935 argrest++;
1936 }
1937
4b2241d2
PP
1938 /* deal with --option_aliases */
1939 else if (switchchar == '-')
1940 {
1941 if (Ustrcmp(argrest, "help") == 0)
1942 {
1943 usage_wanted = TRUE;
1944 break;
1945 }
1946 else if (Ustrcmp(argrest, "version") == 0)
1947 {
1948 switchchar = 'b';
73a46702 1949 argrest = US"V";
4b2241d2
PP
1950 }
1951 }
1952
059ec3d9
PH
1953 /* High-level switch on active initial letter */
1954
1955 switch(switchchar)
1956 {
a3fb9793
PP
1957
1958 /* sendmail uses -Ac and -Am to control which .cf file is used;
1959 we ignore them. */
1960 case 'A':
1961 if (*argrest == '\0') { badarg = TRUE; break; }
1962 else
1963 {
1964 BOOL ignore = FALSE;
1965 switch (*argrest)
1966 {
1967 case 'c':
1968 case 'm':
1969 if (*(argrest + 1) == '\0')
1970 ignore = TRUE;
1971 break;
1972 }
1973 if (!ignore) { badarg = TRUE; break; }
1974 }
1975 break;
1976
059ec3d9
PH
1977 /* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean
1978 so has no need of it. */
1979
1980 case 'B':
1981 if (*argrest == 0) i++; /* Skip over the type */
1982 break;
1983
1984
1985 case 'b':
1986 receiving_message = FALSE; /* Reset TRUE for -bm, -bS, -bs below */
1987
1988 /* -bd: Run in daemon mode, awaiting SMTP connections.
1989 -bdf: Ditto, but in the foreground.
1990 */
1991
1992 if (*argrest == 'd')
1993 {
1994 daemon_listen = TRUE;
1995 if (*(++argrest) == 'f') background_daemon = FALSE;
1996 else if (*argrest != 0) { badarg = TRUE; break; }
1997 }
1998
328895cc
PH
1999 /* -be: Run in expansion test mode
2000 -bem: Ditto, but read a message from a file first
2001 */
059ec3d9
PH
2002
2003 else if (*argrest == 'e')
328895cc 2004 {
059ec3d9 2005 expansion_test = checking = TRUE;
328895cc
PH
2006 if (argrest[1] == 'm')
2007 {
2008 if (++i >= argc) { badarg = TRUE; break; }
2009 expansion_test_message = argv[i];
2010 argrest++;
2011 }
2012 if (argrest[1] != 0) { badarg = TRUE; break; }
2013 }
059ec3d9 2014
f05da2e8
PH
2015 /* -bF: Run system filter test */
2016
2017 else if (*argrest == 'F')
2018 {
34e86e20 2019 filter_test |= checking = FTEST_SYSTEM;
f05da2e8
PH
2020 if (*(++argrest) != 0) { badarg = TRUE; break; }
2021 if (++i < argc) filter_test_sfile = argv[i]; else
2022 {
2023 fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]);
2024 exit(EXIT_FAILURE);
2025 }
2026 }
2027
2028 /* -bf: Run user filter test
059ec3d9
PH
2029 -bfd: Set domain for filter testing
2030 -bfl: Set local part for filter testing
2031 -bfp: Set prefix for filter testing
2032 -bfs: Set suffix for filter testing
2033 */
2034
f05da2e8 2035 else if (*argrest == 'f')
059ec3d9 2036 {
f05da2e8 2037 if (*(++argrest) == 0)
059ec3d9 2038 {
34e86e20 2039 filter_test |= checking = FTEST_USER;
f05da2e8 2040 if (++i < argc) filter_test_ufile = argv[i]; else
059ec3d9
PH
2041 {
2042 fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]);
2043 exit(EXIT_FAILURE);
2044 }
2045 }
2046 else
2047 {
2048 if (++i >= argc)
2049 {
2050 fprintf(stderr, "exim: string expected after %s\n", arg);
2051 exit(EXIT_FAILURE);
2052 }
2053 if (Ustrcmp(argrest, "d") == 0) ftest_domain = argv[i];
2054 else if (Ustrcmp(argrest, "l") == 0) ftest_localpart = argv[i];
2055 else if (Ustrcmp(argrest, "p") == 0) ftest_prefix = argv[i];
2056 else if (Ustrcmp(argrest, "s") == 0) ftest_suffix = argv[i];
2057 else { badarg = TRUE; break; }
2058 }
2059 }
2060
2061 /* -bh: Host checking - an IP address must follow. */
2062
2063 else if (Ustrcmp(argrest, "h") == 0 || Ustrcmp(argrest, "hc") == 0)
2064 {
2065 if (++i >= argc) { badarg = TRUE; break; }
2066 sender_host_address = argv[i];
2067 host_checking = checking = log_testing_mode = TRUE;
2068 host_checking_callout = argrest[1] == 'c';
1a6230a3 2069 message_logs = FALSE;
059ec3d9
PH
2070 }
2071
2072 /* -bi: This option is used by sendmail to initialize *the* alias file,
2073 though it has the -oA option to specify a different file. Exim has no
2074 concept of *the* alias file, but since Sun's YP make script calls
2075 sendmail this way, some support must be provided. */
2076
2077 else if (Ustrcmp(argrest, "i") == 0) bi_option = TRUE;
2078
98a90c36
PP
2079 /* -bI: provide information, of the type to follow after a colon.
2080 This is an Exim flag. */
2081
2082 else if (argrest[0] == 'I' && Ustrlen(argrest) >= 2 && argrest[1] == ':')
2083 {
2084 uschar *p = &argrest[2];
2085 info_flag = CMDINFO_HELP;
2086 if (Ustrlen(p))
2087 {
2088 if (strcmpic(p, CUS"sieve") == 0)
2089 {
2090 info_flag = CMDINFO_SIEVE;
2091 info_stdout = TRUE;
2092 }
36a3ae5f
PP
2093 else if (strcmpic(p, CUS"dscp") == 0)
2094 {
2095 info_flag = CMDINFO_DSCP;
2096 info_stdout = TRUE;
2097 }
98a90c36
PP
2098 else if (strcmpic(p, CUS"help") == 0)
2099 {
2100 info_stdout = TRUE;
2101 }
2102 }
2103 }
2104
059ec3d9
PH
2105 /* -bm: Accept and deliver message - the default option. Reinstate
2106 receiving_message, which got turned off for all -b options. */
2107
2108 else if (Ustrcmp(argrest, "m") == 0) receiving_message = TRUE;
2109
8544e77a
PP
2110 /* -bmalware: test the filename given for malware */
2111
2112 else if (Ustrcmp(argrest, "malware") == 0)
2113 {
2114 if (++i >= argc) { badarg = TRUE; break; }
34e86e20 2115 checking = TRUE;
8544e77a
PP
2116 malware_test_file = argv[i];
2117 }
2118
059ec3d9
PH
2119 /* -bnq: For locally originating messages, do not qualify unqualified
2120 addresses. In the envelope, this causes errors; in header lines they
2121 just get left. */
2122
2123 else if (Ustrcmp(argrest, "nq") == 0)
2124 {
2125 allow_unqualified_sender = FALSE;
2126 allow_unqualified_recipient = FALSE;
2127 }
2128
2129 /* -bpxx: List the contents of the mail queue, in various forms. If
2130 the option is -bpc, just a queue count is needed. Otherwise, if the
2131 first letter after p is r, then order is random. */
2132
2133 else if (*argrest == 'p')
2134 {
2135 if (*(++argrest) == 'c')
2136 {
2137 count_queue = TRUE;
2138 if (*(++argrest) != 0) badarg = TRUE;
2139 break;
2140 }
2141
2142 if (*argrest == 'r')
2143 {
2144 list_queue_option = 8;
2145 argrest++;
2146 }
2147 else list_queue_option = 0;
2148
2149 list_queue = TRUE;
2150
2151 /* -bp: List the contents of the mail queue, top-level only */
2152
2153 if (*argrest == 0) {}
2154
2155 /* -bpu: List the contents of the mail queue, top-level undelivered */
2156
2157 else if (Ustrcmp(argrest, "u") == 0) list_queue_option += 1;
2158
2159 /* -bpa: List the contents of the mail queue, including all delivered */
2160
2161 else if (Ustrcmp(argrest, "a") == 0) list_queue_option += 2;
2162
2163 /* Unknown after -bp[r] */
2164
2165 else
2166 {
2167 badarg = TRUE;
2168 break;
2169 }
2170 }
2171
2172
2173 /* -bP: List the configuration variables given as the address list.
2174 Force -v, so configuration errors get displayed. */
2175
2176 else if (Ustrcmp(argrest, "P") == 0)
2177 {
bf3c2c6b
HSHR
2178 /* -bP config: we need to setup here, because later,
2179 * when list_options is checked, the config is read already */
2180 if (argv[i+1] && Ustrcmp(argv[i+1], "config") == 0)
2181 {
2182 list_config = TRUE;
2183 readconf_save_config(version_string);
2184 }
2185 else
2186 {
2187 list_options = TRUE;
2188 debug_selector |= D_v;
2189 debug_file = stderr;
2190 }
059ec3d9
PH
2191 }
2192
2193 /* -brt: Test retry configuration lookup */
2194
2195 else if (Ustrcmp(argrest, "rt") == 0)
2196 {
34e86e20 2197 checking = TRUE;
059ec3d9
PH
2198 test_retry_arg = i + 1;
2199 goto END_ARG;
2200 }
2201
2202 /* -brw: Test rewrite configuration */
2203
2204 else if (Ustrcmp(argrest, "rw") == 0)
2205 {
34e86e20 2206 checking = TRUE;
059ec3d9
PH
2207 test_rewrite_arg = i + 1;
2208 goto END_ARG;
2209 }
2210
2211 /* -bS: Read SMTP commands on standard input, but produce no replies -
2212 all errors are reported by sending messages. */
2213
2214 else if (Ustrcmp(argrest, "S") == 0)
2215 smtp_input = smtp_batched_input = receiving_message = TRUE;
2216
2217 /* -bs: Read SMTP commands on standard input and produce SMTP replies
2218 on standard output. */
2219
2220 else if (Ustrcmp(argrest, "s") == 0) smtp_input = receiving_message = TRUE;
2221
2222 /* -bt: address testing mode */
2223
2224 else if (Ustrcmp(argrest, "t") == 0)
2225 address_test_mode = checking = log_testing_mode = TRUE;
2226
2227 /* -bv: verify addresses */
2228
2229 else if (Ustrcmp(argrest, "v") == 0)
2230 verify_address_mode = checking = log_testing_mode = TRUE;
2231
2232 /* -bvs: verify sender addresses */
2233
2234 else if (Ustrcmp(argrest, "vs") == 0)
2235 {
2236 verify_address_mode = checking = log_testing_mode = TRUE;
2237 verify_as_sender = TRUE;
2238 }
2239
2240 /* -bV: Print version string and support details */
2241
2242 else if (Ustrcmp(argrest, "V") == 0)
2243 {
2244 printf("Exim version %s #%s built %s\n", version_string,
2245 version_cnumber, version_date);
2246 printf("%s\n", CS version_copyright);
2247 version_printed = TRUE;
2248 show_whats_supported(stdout);
b25c9675 2249 log_testing_mode = TRUE;
059ec3d9
PH
2250 }
2251
9ee44efb
PP
2252 /* -bw: inetd wait mode, accept a listening socket as stdin */
2253
2254 else if (*argrest == 'w')
2255 {
2256 inetd_wait_mode = TRUE;
2257 background_daemon = FALSE;
2258 daemon_listen = TRUE;
2259 if (*(++argrest) != '\0')
2260 {
2261 inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE);
2262 if (inetd_wait_timeout <= 0)
2263 {
2264 fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]);
2265 exit(EXIT_FAILURE);
2266 }
2267 }
2268 }
2269
059ec3d9
PH
2270 else badarg = TRUE;
2271 break;
2272
2273
2274 /* -C: change configuration file list; ignore if it isn't really
2275 a change! Enforce a prefix check if required. */
2276
2277 case 'C':
2278 if (*argrest == 0)
2279 {
2280 if(++i < argc) argrest = argv[i]; else
2281 { badarg = TRUE; break; }
2282 }
2283 if (Ustrcmp(config_main_filelist, argrest) != 0)
2284 {
2285 #ifdef ALT_CONFIG_PREFIX
2286 int sep = 0;
2287 int len = Ustrlen(ALT_CONFIG_PREFIX);
2288 uschar *list = argrest;
2289 uschar *filename;
2290 while((filename = string_nextinlist(&list, &sep, big_buffer,
2291 big_buffer_size)) != NULL)
2292 {
2293 if ((Ustrlen(filename) < len ||
2294 Ustrncmp(filename, ALT_CONFIG_PREFIX, len) != 0 ||
2295 Ustrstr(filename, "/../") != NULL) &&
2296 (Ustrcmp(filename, "/dev/null") != 0 || real_uid != root_uid))
2297 {
2298 fprintf(stderr, "-C Permission denied\n");
2299 exit(EXIT_FAILURE);
2300 }
2301 }
2302 #endif
261dc43e
DW
2303 if (real_uid != root_uid)
2304 {
90b6341f 2305 #ifdef TRUSTED_CONFIG_LIST
261dc43e 2306
90b6341f
DW
2307 if (real_uid != exim_uid
2308 #ifdef CONFIGURE_OWNER
2309 && real_uid != config_uid
2310 #endif
2311 )
261dc43e
DW
2312 trusted_config = FALSE;
2313 else
2314 {
90b6341f 2315 FILE *trust_list = Ufopen(TRUSTED_CONFIG_LIST, "rb");
261dc43e
DW
2316 if (trust_list)
2317 {
2318 struct stat statbuf;
2319
2320 if (fstat(fileno(trust_list), &statbuf) != 0 ||
2321 (statbuf.st_uid != root_uid /* owner not root */
2322 #ifdef CONFIGURE_OWNER
2323 && statbuf.st_uid != config_uid /* owner not the special one */
2324 #endif
2325 ) || /* or */
2326 (statbuf.st_gid != root_gid /* group not root */
2327 #ifdef CONFIGURE_GROUP
2328 && statbuf.st_gid != config_gid /* group not the special one */
2329 #endif
2330 && (statbuf.st_mode & 020) != 0 /* group writeable */
2331 ) || /* or */
2332 (statbuf.st_mode & 2) != 0) /* world writeable */
2333 {
2334 trusted_config = FALSE;
2335 fclose(trust_list);
2336 }
2337 else
2338 {
2339 /* Well, the trust list at least is up to scratch... */
2340 void *reset_point = store_get(0);
90b6341f
DW
2341 uschar *trusted_configs[32];
2342 int nr_configs = 0;
261dc43e
DW
2343 int i = 0;
2344
2345 while (Ufgets(big_buffer, big_buffer_size, trust_list))
2346 {
2347 uschar *start = big_buffer, *nl;
2348 while (*start && isspace(*start))
2349 start++;
1e83d68b 2350 if (*start != '/')
261dc43e
DW
2351 continue;
2352 nl = Ustrchr(start, '\n');
2353 if (nl)
2354 *nl = 0;
90b6341f
DW
2355 trusted_configs[nr_configs++] = string_copy(start);
2356 if (nr_configs == 32)
261dc43e
DW
2357 break;
2358 }
2359 fclose(trust_list);
2360
90b6341f 2361 if (nr_configs)
261dc43e
DW
2362 {
2363 int sep = 0;
55414b25 2364 const uschar *list = argrest;
261dc43e
DW
2365 uschar *filename;
2366 while (trusted_config && (filename = string_nextinlist(&list,
2367 &sep, big_buffer, big_buffer_size)) != NULL)
2368 {
90b6341f 2369 for (i=0; i < nr_configs; i++)
261dc43e 2370 {
90b6341f 2371 if (Ustrcmp(filename, trusted_configs[i]) == 0)
261dc43e
DW
2372 break;
2373 }
90b6341f 2374 if (i == nr_configs)
261dc43e
DW
2375 {
2376 trusted_config = FALSE;
2377 break;
2378 }
2379 }
1e83d68b 2380 store_reset(reset_point);
261dc43e
DW
2381 }
2382 else
2383 {
2384 /* No valid prefixes found in trust_list file. */
2385 trusted_config = FALSE;
2386 }
2387 }
2388 }
2389 else
2390 {
2391 /* Could not open trust_list file. */
2392 trusted_config = FALSE;
2393 }
2394 }
2395 #else
2396 /* Not root; don't trust config */
2397 trusted_config = FALSE;
2398 #endif
2399 }
059ec3d9
PH
2400
2401 config_main_filelist = argrest;
2402 config_changed = TRUE;
2403 }
2404 break;
2405
2406
2407 /* -D: set up a macro definition */
2408
2409 case 'D':
2410 #ifdef DISABLE_D_OPTION
2411 fprintf(stderr, "exim: -D is not available in this Exim binary\n");
2412 exit(EXIT_FAILURE);
2413 #else
2414 {
2415 int ptr = 0;
059ec3d9
PH
2416 macro_item *m;
2417 uschar name[24];
2418 uschar *s = argrest;
2419
4ab69ec7 2420 opt_D_used = TRUE;
059ec3d9
PH
2421 while (isspace(*s)) s++;
2422
2423 if (*s < 'A' || *s > 'Z')
2424 {
2425 fprintf(stderr, "exim: macro name set by -D must start with "
2426 "an upper case letter\n");
2427 exit(EXIT_FAILURE);
2428 }
2429
2430 while (isalnum(*s) || *s == '_')
2431 {
2432 if (ptr < sizeof(name)-1) name[ptr++] = *s;
2433 s++;
2434 }
2435 name[ptr] = 0;
2436 if (ptr == 0) { badarg = TRUE; break; }
2437 while (isspace(*s)) s++;
2438 if (*s != 0)
2439 {
2440 if (*s++ != '=') { badarg = TRUE; break; }
2441 while (isspace(*s)) s++;
2442 }
2443
c193398d 2444 for (m = macros; m; m = m->next)
059ec3d9
PH
2445 if (Ustrcmp(m->name, name) == 0)
2446 {
2447 fprintf(stderr, "exim: duplicated -D in command line\n");
2448 exit(EXIT_FAILURE);
2449 }
059ec3d9 2450
c193398d 2451 m = macro_create(name, s, TRUE);
059ec3d9
PH
2452
2453 if (clmacro_count >= MAX_CLMACROS)
2454 {
2455 fprintf(stderr, "exim: too many -D options on command line\n");
2456 exit(EXIT_FAILURE);
2457 }
2458 clmacros[clmacro_count++] = string_sprintf("-D%s=%s", m->name,
2459 m->replacement);
2460 }
2461 #endif
2462 break;
2463
2464 /* -d: Set debug level (see also -v below) or set the drop_cr option.
8e669ac1 2465 The latter is now a no-op, retained for compatibility only. If -dd is used,
3d235903 2466 debugging subprocesses of the daemon is disabled. */
059ec3d9
PH
2467
2468 case 'd':
2469 if (Ustrcmp(argrest, "ropcr") == 0)
2470 {
2471 /* drop_cr = TRUE; */
2472 }
2473
2474 /* Use an intermediate variable so that we don't set debugging while
2475 decoding the debugging bits. */
2476
2477 else
2478 {
2479 unsigned int selector = D_default;
2480 debug_selector = 0;
2481 debug_file = NULL;
3d235903
PH
2482 if (*argrest == 'd')
2483 {
2484 debug_daemon = TRUE;
2485 argrest++;
2486 }
059ec3d9 2487 if (*argrest != 0)
6c6d6e48
TF
2488 decode_bits(&selector, 1, debug_notall, argrest,
2489 debug_options, debug_options_count, US"debug", 0);
059ec3d9
PH
2490 debug_selector = selector;
2491 }
2492 break;
2493
2494
2495 /* -E: This is a local error message. This option is not intended for
2496 external use at all, but is not restricted to trusted callers because it
2497 does no harm (just suppresses certain error messages) and if Exim is run
2498 not setuid root it won't always be trusted when it generates error
2499 messages using this option. If there is a message id following -E, point
2500 message_reference at it, for logging. */
2501
2502 case 'E':
2503 local_error_message = TRUE;
2504 if (mac_ismsgid(argrest)) message_reference = argrest;
2505 break;
2506
2507
2508 /* -ex: The vacation program calls sendmail with the undocumented "-eq"
2509 option, so it looks as if historically the -oex options are also callable
2510 without the leading -o. So we have to accept them. Before the switch,
2511 anything starting -oe has been converted to -e. Exim does not support all
2512 of the sendmail error options. */
2513
2514 case 'e':
2515 if (Ustrcmp(argrest, "e") == 0)
2516 {
2517 arg_error_handling = ERRORS_SENDER;
2518 errors_sender_rc = EXIT_SUCCESS;
2519 }
2520 else if (Ustrcmp(argrest, "m") == 0) arg_error_handling = ERRORS_SENDER;
2521 else if (Ustrcmp(argrest, "p") == 0) arg_error_handling = ERRORS_STDERR;
2522 else if (Ustrcmp(argrest, "q") == 0) arg_error_handling = ERRORS_STDERR;
2523 else if (Ustrcmp(argrest, "w") == 0) arg_error_handling = ERRORS_SENDER;
2524 else badarg = TRUE;
2525 break;
2526
2527
2528 /* -F: Set sender's full name, used instead of the gecos entry from
2529 the password file. Since users can usually alter their gecos entries,
2530 there's no security involved in using this instead. The data can follow
2531 the -F or be in the next argument. */
2532
2533 case 'F':
2534 if (*argrest == 0)
2535 {
2536 if(++i < argc) argrest = argv[i]; else
2537 { badarg = TRUE; break; }
2538 }
2539 originator_name = argrest;
2fe1a124 2540 sender_name_forced = TRUE;
059ec3d9
PH
2541 break;
2542
2543
2544 /* -f: Set sender's address - this value is only actually used if Exim is
2545 run by a trusted user, or if untrusted_set_sender is set and matches the
2546 address, except that the null address can always be set by any user. The
2547 test for this happens later, when the value given here is ignored when not
2548 permitted. For an untrusted user, the actual sender is still put in Sender:
2549 if it doesn't match the From: header (unless no_local_from_check is set).
2550 The data can follow the -f or be in the next argument. The -r switch is an
2551 obsolete form of -f but since there appear to be programs out there that
2552 use anything that sendmail has ever supported, better accept it - the
2553 synonymizing is done before the switch above.
2554
2555 At this stage, we must allow domain literal addresses, because we don't
2556 know what the setting of allow_domain_literals is yet. Ditto for trailing
2557 dots and strip_trailing_dot. */
2558
2559 case 'f':
2560 {
250b6871 2561 int dummy_start, dummy_end;
059ec3d9
PH
2562 uschar *errmess;
2563 if (*argrest == 0)
2564 {
2565 if (i+1 < argc) argrest = argv[++i]; else
2566 { badarg = TRUE; break; }
2567 }
2568 if (*argrest == 0)
059ec3d9 2569 sender_address = string_sprintf(""); /* Ensure writeable memory */
059ec3d9
PH
2570 else
2571 {
2572 uschar *temp = argrest + Ustrlen(argrest) - 1;
2573 while (temp >= argrest && isspace(*temp)) temp--;
2574 if (temp >= argrest && *temp == '.') f_end_dot = TRUE;
2575 allow_domain_literals = TRUE;
2576 strip_trailing_dot = TRUE;
8c5d388a 2577#ifdef SUPPORT_I18N
250b6871
JH
2578 allow_utf8_domains = TRUE;
2579#endif
2580 sender_address = parse_extract_address(argrest, &errmess,
2581 &dummy_start, &dummy_end, &sender_address_domain, TRUE);
8c5d388a 2582#ifdef SUPPORT_I18N
250b6871
JH
2583 message_smtputf8 = string_is_utf8(sender_address);
2584 allow_utf8_domains = FALSE;
2585#endif
059ec3d9
PH
2586 allow_domain_literals = FALSE;
2587 strip_trailing_dot = FALSE;
2588 if (sender_address == NULL)
2589 {
2590 fprintf(stderr, "exim: bad -f address \"%s\": %s\n", argrest, errmess);
2591 return EXIT_FAILURE;
2592 }
2593 }
2594 sender_address_forced = TRUE;
2595 }
2596 break;
2597
a3fb9793 2598 /* -G: sendmail invocation to specify that it's a gateway submission and
f4ee74ac
PP
2599 sendmail may complain about problems instead of fixing them.
2600 We make it equivalent to an ACL "control = suppress_local_fixups" and do
2601 not at this time complain about problems. */
059ec3d9
PH
2602
2603 case 'G':
f4ee74ac 2604 flag_G = TRUE;
059ec3d9
PH
2605 break;
2606
2607 /* -h: Set the hop count for an incoming message. Exim does not currently
2608 support this; it always computes it by counting the Received: headers.
2609 To put it in will require a change to the spool header file format. */
2610
2611 case 'h':
2612 if (*argrest == 0)
2613 {
2614 if(++i < argc) argrest = argv[i]; else
2615 { badarg = TRUE; break; }
2616 }
2617 if (!isdigit(*argrest)) badarg = TRUE;
2618 break;
2619
2620
2621 /* -i: Set flag so dot doesn't end non-SMTP input (same as -oi, seems
2622 not to be documented for sendmail but mailx (at least) uses it) */
2623
2624 case 'i':
2625 if (*argrest == 0) dot_ends = FALSE; else badarg = TRUE;
2626 break;
2627
2628
a3fb9793
PP
2629 /* -L: set the identifier used for syslog; equivalent to setting
2630 syslog_processname in the config file, but needs to be an admin option. */
2631
2632 case 'L':
2633 if (*argrest == '\0')
2634 {
2635 if(++i < argc) argrest = argv[i]; else
2636 { badarg = TRUE; break; }
2637 }
2638 sz = Ustrlen(argrest);
2639 if (sz > 32)
2640 {
2641 fprintf(stderr, "exim: the -L syslog name is too long: \"%s\"\n", argrest);
2642 return EXIT_FAILURE;
2643 }
2644 if (sz < 1)
2645 {
2646 fprintf(stderr, "exim: the -L syslog name is too short\n");
2647 return EXIT_FAILURE;
2648 }
2649 cmdline_syslog_name = argrest;
2650 break;
2651
059ec3d9
PH
2652 case 'M':
2653 receiving_message = FALSE;
2654
2655 /* -MC: continue delivery of another message via an existing open
2656 file descriptor. This option is used for an internal call by the
2657 smtp transport when there is a pending message waiting to go to an
2658 address to which it has got a connection. Five subsequent arguments are
2659 required: transport name, host name, IP address, sequence number, and
2660 message_id. Transports may decline to create new processes if the sequence
2661 number gets too big. The channel is stdin. This (-MC) must be the last
2662 argument. There's a subsequent check that the real-uid is privileged.
2663
2664 If we are running in the test harness. delay for a bit, to let the process
2665 that set this one up complete. This makes for repeatability of the logging,
2666 etc. output. */
2667
2668 if (Ustrcmp(argrest, "C") == 0)
2669 {
41c7c167
PH
2670 union sockaddr_46 interface_sock;
2671 EXIM_SOCKLEN_T size = sizeof(interface_sock);
2672
059ec3d9
PH
2673 if (argc != i + 6)
2674 {
2675 fprintf(stderr, "exim: too many or too few arguments after -MC\n");
2676 return EXIT_FAILURE;
2677 }
2678
2679 if (msg_action_arg >= 0)
2680 {
2681 fprintf(stderr, "exim: incompatible arguments\n");
2682 return EXIT_FAILURE;
2683 }
2684
2685 continue_transport = argv[++i];
2686 continue_hostname = argv[++i];
2687 continue_host_address = argv[++i];
2688 continue_sequence = Uatoi(argv[++i]);
2689 msg_action = MSG_DELIVER;
2690 msg_action_arg = ++i;
2691 forced_delivery = TRUE;
2692 queue_run_pid = passed_qr_pid;
2693 queue_run_pipe = passed_qr_pipe;
2694
2695 if (!mac_ismsgid(argv[i]))
2696 {
2697 fprintf(stderr, "exim: malformed message id %s after -MC option\n",
2698 argv[i]);
2699 return EXIT_FAILURE;
2700 }
2701
41c7c167
PH
2702 /* Set up $sending_ip_address and $sending_port */
2703
2704 if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock),
2705 &size) == 0)
2706 sending_ip_address = host_ntoa(-1, &interface_sock, NULL,
2707 &sending_port);
2708 else
2709 {
2710 fprintf(stderr, "exim: getsockname() failed after -MC option: %s\n",
2711 strerror(errno));
2712 return EXIT_FAILURE;
2713 }
2714
059ec3d9
PH
2715 if (running_in_test_harness) millisleep(500);
2716 break;
2717 }
2718
2d14f397
JH
2719 else if (*argrest == 'C' && argrest[1] && !argrest[2])
2720 {
2721 switch(argrest[1])
2722 {
059ec3d9
PH
2723 /* -MCA: set the smtp_authenticated flag; this is useful only when it
2724 precedes -MC (see above). The flag indicates that the host to which
2725 Exim is connected has accepted an AUTH sequence. */
2726
2d14f397 2727 case 'A': smtp_authenticated = TRUE; break;
059ec3d9 2728
6c1c3d1d
WB
2729 /* -MCD: set the smtp_use_dsn flag; this indicates that the host
2730 that exim is connected to supports the esmtp extension DSN */
28b3821f 2731
2d14f397 2732 case 'D': smtp_peer_options |= PEER_OFFERED_DSN; break;
6c1c3d1d 2733
e37f8a84 2734 /* -MCG: set the queue name, to a non-default value */
28b3821f 2735
2d14f397
JH
2736 case 'G': if (++i < argc) queue_name = string_copy(argv[i]);
2737 else badarg = TRUE;
2738 break;
2739
2740 /* -MCK: the peer offered CHUNKING. Must precede -MC */
2741
2742 case 'K': smtp_peer_options |= PEER_OFFERED_CHUNKING; break;
28b3821f 2743
059ec3d9
PH
2744 /* -MCP: set the smtp_use_pipelining flag; this is useful only when
2745 it preceded -MC (see above) */
2746
2d14f397 2747 case 'P': smtp_peer_options |= PEER_OFFERED_PIPE; break;
059ec3d9
PH
2748
2749 /* -MCQ: pass on the pid of the queue-running process that started
2750 this chain of deliveries and the fd of its synchronizing pipe; this
2751 is useful only when it precedes -MC (see above) */
2752
2d14f397
JH
2753 case 'Q': if (++i < argc) passed_qr_pid = (pid_t)(Uatol(argv[i]));
2754 else badarg = TRUE;
2755 if (++i < argc) passed_qr_pipe = (int)(Uatol(argv[i]));
2756 else badarg = TRUE;
2757 break;
059ec3d9
PH
2758
2759 /* -MCS: set the smtp_use_size flag; this is useful only when it
2760 precedes -MC (see above) */
2761
2d14f397 2762 case 'S': smtp_peer_options |= PEER_OFFERED_SIZE; break;
059ec3d9 2763
2d14f397 2764#ifdef SUPPORT_TLS
059ec3d9
PH
2765 /* -MCT: set the tls_offered flag; this is useful only when it
2766 precedes -MC (see above). The flag indicates that the host to which
2767 Exim is connected has offered TLS support. */
2768
2d14f397
JH
2769 case 'T': smtp_peer_options |= PEER_OFFERED_TLS; break;
2770#endif
2771
2772 default: badarg = TRUE; break;
2773 }
2774 break;
059ec3d9 2775 }
059ec3d9
PH
2776
2777 /* -M[x]: various operations on the following list of message ids:
2778 -M deliver the messages, ignoring next retry times and thawing
2779 -Mc deliver the messages, checking next retry times, no thawing
2780 -Mf freeze the messages
2781 -Mg give up on the messages
2782 -Mt thaw the messages
2783 -Mrm remove the messages
2784 In the above cases, this must be the last option. There are also the
2785 following options which are followed by a single message id, and which
2786 act on that message. Some of them use the "recipient" addresses as well.
2787 -Mar add recipient(s)
2788 -Mmad mark all recipients delivered
2789 -Mmd mark recipients(s) delivered
2790 -Mes edit sender
0ef732d9 2791 -Mset load a message for use with -be
059ec3d9 2792 -Mvb show body
a96603a0 2793 -Mvc show copy (of whole message, in RFC 2822 format)
059ec3d9
PH
2794 -Mvh show header
2795 -Mvl show log
2796 */
2797
2798 else if (*argrest == 0)
2799 {
2800 msg_action = MSG_DELIVER;
2801 forced_delivery = deliver_force_thaw = TRUE;
2802 }
2803 else if (Ustrcmp(argrest, "ar") == 0)
2804 {
2805 msg_action = MSG_ADD_RECIPIENT;
2806 one_msg_action = TRUE;
2807 }
2808 else if (Ustrcmp(argrest, "c") == 0) msg_action = MSG_DELIVER;
2809 else if (Ustrcmp(argrest, "es") == 0)
2810 {
2811 msg_action = MSG_EDIT_SENDER;
2812 one_msg_action = TRUE;
2813 }
2814 else if (Ustrcmp(argrest, "f") == 0) msg_action = MSG_FREEZE;
2815 else if (Ustrcmp(argrest, "g") == 0)
2816 {
2817 msg_action = MSG_DELIVER;
2818 deliver_give_up = TRUE;
2819 }
2820 else if (Ustrcmp(argrest, "mad") == 0)
2821 {
2822 msg_action = MSG_MARK_ALL_DELIVERED;
2823 }
2824 else if (Ustrcmp(argrest, "md") == 0)
2825 {
2826 msg_action = MSG_MARK_DELIVERED;
2827 one_msg_action = TRUE;
2828 }
2829 else if (Ustrcmp(argrest, "rm") == 0) msg_action = MSG_REMOVE;
0ef732d9
PH
2830 else if (Ustrcmp(argrest, "set") == 0)
2831 {
2832 msg_action = MSG_LOAD;
2833 one_msg_action = TRUE;
2834 }
059ec3d9
PH
2835 else if (Ustrcmp(argrest, "t") == 0) msg_action = MSG_THAW;
2836 else if (Ustrcmp(argrest, "vb") == 0)
2837 {
2838 msg_action = MSG_SHOW_BODY;
2839 one_msg_action = TRUE;
2840 }
a96603a0
PH
2841 else if (Ustrcmp(argrest, "vc") == 0)
2842 {
2843 msg_action = MSG_SHOW_COPY;
2844 one_msg_action = TRUE;
2845 }
059ec3d9
PH
2846 else if (Ustrcmp(argrest, "vh") == 0)
2847 {
2848 msg_action = MSG_SHOW_HEADER;
2849 one_msg_action = TRUE;
2850 }
2851 else if (Ustrcmp(argrest, "vl") == 0)
2852 {
2853 msg_action = MSG_SHOW_LOG;
2854 one_msg_action = TRUE;
2855 }
2856 else { badarg = TRUE; break; }
2857
2858 /* All the -Mxx options require at least one message id. */
2859
2860 msg_action_arg = i + 1;
2861 if (msg_action_arg >= argc)
2862 {
2863 fprintf(stderr, "exim: no message ids given after %s option\n", arg);
2864 return EXIT_FAILURE;
2865 }
2866
2867 /* Some require only message ids to follow */
2868
2869 if (!one_msg_action)
2870 {
2871 int j;
2872 for (j = msg_action_arg; j < argc; j++) if (!mac_ismsgid(argv[j]))
2873 {
2874 fprintf(stderr, "exim: malformed message id %s after %s option\n",
2875 argv[j], arg);
2876 return EXIT_FAILURE;
2877 }
2878 goto END_ARG; /* Remaining args are ids */
2879 }
2880
2881 /* Others require only one message id, possibly followed by addresses,
2882 which will be handled as normal arguments. */
2883
2884 else
2885 {
2886 if (!mac_ismsgid(argv[msg_action_arg]))
2887 {
2888 fprintf(stderr, "exim: malformed message id %s after %s option\n",
2889 argv[msg_action_arg], arg);
2890 return EXIT_FAILURE;
2891 }
2892 i++;
2893 }
2894 break;
2895
2896
2897 /* Some programs seem to call the -om option without the leading o;
2898 for sendmail it askes for "me too". Exim always does this. */
2899
2900 case 'm':
2901 if (*argrest != 0) badarg = TRUE;
2902 break;
2903
2904
2905 /* -N: don't do delivery - a debugging option that stops transports doing
2906 their thing. It implies debugging at the D_v level. */
2907
2908 case 'N':
2909 if (*argrest == 0)
2910 {
2911 dont_deliver = TRUE;
2912 debug_selector |= D_v;
2913 debug_file = stderr;
2914 }
2915 else badarg = TRUE;
2916 break;
2917
2918
12f69989
PP
2919 /* -n: This means "don't alias" in sendmail, apparently.
2920 For normal invocations, it has no effect.
2921 It may affect some other options. */
059ec3d9
PH
2922
2923 case 'n':
12f69989 2924 flag_n = TRUE;
059ec3d9
PH
2925 break;
2926
2927 /* -O: Just ignore it. In sendmail, apparently -O option=value means set
2928 option to the specified value. This form uses long names. We need to handle
2929 -O option=value and -Ooption=value. */
2930
2931 case 'O':
2932 if (*argrest == 0)
2933 {
2934 if (++i >= argc)
2935 {
2936 fprintf(stderr, "exim: string expected after -O\n");
2937 exit(EXIT_FAILURE);
2938 }
2939 }
2940 break;
2941
2942 case 'o':
2943
2944 /* -oA: Set an argument for the bi command (sendmail's "alternate alias
2945 file" option). */
2946
2947 if (*argrest == 'A')
2948 {
2949 alias_arg = argrest + 1;
2950 if (alias_arg[0] == 0)
2951 {
2952 if (i+1 < argc) alias_arg = argv[++i]; else
2953 {
2954 fprintf(stderr, "exim: string expected after -oA\n");
2955 exit(EXIT_FAILURE);
2956 }
2957 }
2958 }
2959
2960 /* -oB: Set a connection message max value for remote deliveries */
2961
2962 else if (*argrest == 'B')
2963 {
2964 uschar *p = argrest + 1;
2965 if (p[0] == 0)
2966 {
2967 if (i+1 < argc && isdigit((argv[i+1][0]))) p = argv[++i]; else
2968 {
2969 connection_max_messages = 1;
2970 p = NULL;
2971 }
2972 }
2973
2974 if (p != NULL)
2975 {
2976 if (!isdigit(*p))
2977 {
2978 fprintf(stderr, "exim: number expected after -oB\n");
2979 exit(EXIT_FAILURE);
2980 }
2981 connection_max_messages = Uatoi(p);
2982 }
2983 }
2984
2985 /* -odb: background delivery */
2986
2987 else if (Ustrcmp(argrest, "db") == 0)
2988 {
2989 synchronous_delivery = FALSE;
2990 arg_queue_only = FALSE;
2991 queue_only_set = TRUE;
2992 }
2993
2994 /* -odf: foreground delivery (smail-compatible option); same effect as
2995 -odi: interactive (synchronous) delivery (sendmail-compatible option)
2996 */
2997
2998 else if (Ustrcmp(argrest, "df") == 0 || Ustrcmp(argrest, "di") == 0)
2999 {
3000 synchronous_delivery = TRUE;
3001 arg_queue_only = FALSE;
3002 queue_only_set = TRUE;
3003 }
3004
3005 /* -odq: queue only */
3006
3007 else if (Ustrcmp(argrest, "dq") == 0)
3008 {
3009 synchronous_delivery = FALSE;
3010 arg_queue_only = TRUE;
3011 queue_only_set = TRUE;
3012 }
3013
3014 /* -odqs: queue SMTP only - do local deliveries and remote routing,
3015 but no remote delivery */
3016
3017 else if (Ustrcmp(argrest, "dqs") == 0)
3018 {
3019 queue_smtp = TRUE;
3020 arg_queue_only = FALSE;
3021 queue_only_set = TRUE;
3022 }
3023
3024 /* -oex: Sendmail error flags. As these are also accepted without the
3025 leading -o prefix, for compatibility with vacation and other callers,
3026 they are handled with -e above. */
3027
3028 /* -oi: Set flag so dot doesn't end non-SMTP input (same as -i)
3029 -oitrue: Another sendmail syntax for the same */
3030
3031 else if (Ustrcmp(argrest, "i") == 0 ||
3032 Ustrcmp(argrest, "itrue") == 0)
3033 dot_ends = FALSE;
3034
3035 /* -oM*: Set various characteristics for an incoming message; actually
3036 acted on for trusted callers only. */
3037
3038 else if (*argrest == 'M')
3039 {
3040 if (i+1 >= argc)
3041 {
3042 fprintf(stderr, "exim: data expected after -o%s\n", argrest);
3043 exit(EXIT_FAILURE);
3044 }
3045
3046 /* -oMa: Set sender host address */
3047
3048 if (Ustrcmp(argrest, "Ma") == 0) sender_host_address = argv[++i];
3049
3050 /* -oMaa: Set authenticator name */
3051
3052 else if (Ustrcmp(argrest, "Maa") == 0)
3053 sender_host_authenticated = argv[++i];
3054
3055 /* -oMas: setting authenticated sender */
3056
3057 else if (Ustrcmp(argrest, "Mas") == 0) authenticated_sender = argv[++i];
3058
3059 /* -oMai: setting authenticated id */
3060
3061 else if (Ustrcmp(argrest, "Mai") == 0) authenticated_id = argv[++i];
3062
3063 /* -oMi: Set incoming interface address */
3064
3065 else if (Ustrcmp(argrest, "Mi") == 0) interface_address = argv[++i];
3066
d2af03f4
HS
3067 /* -oMm: Message reference */
3068
3069 else if (Ustrcmp(argrest, "Mm") == 0)
3070 {
3071 if (!mac_ismsgid(argv[i+1]))
3072 {
3073 fprintf(stderr,"-oMm must be a valid message ID\n");
3074 exit(EXIT_FAILURE);
3075 }
3076 if (!trusted_config)
3077 {
3078 fprintf(stderr,"-oMm must be called by a trusted user/config\n");
3079 exit(EXIT_FAILURE);
3080 }
3081 message_reference = argv[++i];
3082 }
3083
059ec3d9
PH
3084 /* -oMr: Received protocol */
3085
3086 else if (Ustrcmp(argrest, "Mr") == 0) received_protocol = argv[++i];
3087
3088 /* -oMs: Set sender host name */
3089
3090 else if (Ustrcmp(argrest, "Ms") == 0) sender_host_name = argv[++i];
3091
3092 /* -oMt: Set sender ident */
3093
33d73e3b
PH
3094 else if (Ustrcmp(argrest, "Mt") == 0)
3095 {
3096 sender_ident_set = TRUE;
3097 sender_ident = argv[++i];
3098 }
059ec3d9
PH
3099
3100 /* Else a bad argument */
3101
3102 else
3103 {
3104 badarg = TRUE;
3105 break;
3106 }
3107 }
3108
3109 /* -om: Me-too flag for aliases. Exim always does this. Some programs
3110 seem to call this as -m (undocumented), so that is also accepted (see
3111 above). */
3112
3113 else if (Ustrcmp(argrest, "m") == 0) {}
3114
3115 /* -oo: An ancient flag for old-style addresses which still seems to
3116 crop up in some calls (see in SCO). */
3117
3118 else if (Ustrcmp(argrest, "o") == 0) {}
3119
3120 /* -oP <name>: set pid file path for daemon */
3121
3122 else if (Ustrcmp(argrest, "P") == 0)
3123 override_pid_file_path = argv[++i];
3124
3125 /* -or <n>: set timeout for non-SMTP acceptance
3126 -os <n>: set timeout for SMTP acceptance */
3127
3128 else if (*argrest == 'r' || *argrest == 's')
3129 {
3130 int *tp = (*argrest == 'r')?
3131 &arg_receive_timeout : &arg_smtp_receive_timeout;
3132 if (argrest[1] == 0)
3133 {
3134 if (i+1 < argc) *tp= readconf_readtime(argv[++i], 0, FALSE);
3135 }
3136 else *tp = readconf_readtime(argrest + 1, 0, FALSE);
3137 if (*tp < 0)
3138 {
3139 fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]);
3140 exit(EXIT_FAILURE);
3141 }
3142 }
3143
3144 /* -oX <list>: Override local_interfaces and/or default daemon ports */
3145
3146 else if (Ustrcmp(argrest, "X") == 0)
3147 override_local_interfaces = argv[++i];
3148
3149 /* Unknown -o argument */
3150
3151 else badarg = TRUE;
3152 break;
3153
3154
3155 /* -ps: force Perl startup; -pd force delayed Perl startup */
3156
3157 case 'p':
3158 #ifdef EXIM_PERL
3159 if (*argrest == 's' && argrest[1] == 0)
3160 {
3161 perl_start_option = 1;
3162 break;
3163 }
3164 if (*argrest == 'd' && argrest[1] == 0)
3165 {
3166 perl_start_option = -1;
3167 break;
3168 }
3169 #endif
3170
3171 /* -panythingelse is taken as the Sendmail-compatible argument -prval:sval,
3172 which sets the host protocol and host name */
3173
3174 if (*argrest == 0)
3175 {
3176 if (i+1 < argc) argrest = argv[++i]; else
3177 { badarg = TRUE; break; }
3178 }
3179
3180 if (*argrest != 0)
3181 {
3182 uschar *hn = Ustrchr(argrest, ':');
3183 if (hn == NULL)
3184 {
3185 received_protocol = argrest;
3186 }
3187 else
3188 {
3189 received_protocol = string_copyn(argrest, hn - argrest);
3190 sender_host_name = hn + 1;
3191 }
3192 }
3193 break;
3194
3195
3196 case 'q':
3197 receiving_message = FALSE;
3cc66b45
PH
3198 if (queue_interval >= 0)
3199 {
3200 fprintf(stderr, "exim: -q specified more than once\n");
3201 exit(EXIT_FAILURE);
3202 }
059ec3d9
PH
3203
3204 /* -qq...: Do queue runs in a 2-stage manner */
3205
3206 if (*argrest == 'q')
3207 {
3208 queue_2stage = TRUE;
3209 argrest++;
3210 }
3211
3212 /* -qi...: Do only first (initial) deliveries */
3213
3214 if (*argrest == 'i')
3215 {
3216 queue_run_first_delivery = TRUE;
3217 argrest++;
3218 }
3219
3220 /* -qf...: Run the queue, forcing deliveries
3221 -qff..: Ditto, forcing thawing as well */
3222
3223 if (*argrest == 'f')
3224 {
3225 queue_run_force = TRUE;
55e70e76 3226 if (*++argrest == 'f')
059ec3d9
PH
3227 {
3228 deliver_force_thaw = TRUE;
3229 argrest++;
3230 }
3231 }
3232
3233 /* -q[f][f]l...: Run the queue only on local deliveries */
3234
3235 if (*argrest == 'l')
3236 {
3237 queue_run_local = TRUE;
3238 argrest++;
3239 }
3240
55e70e76 3241 /* -q[f][f][l][G<name>]... Work on the named queue */
28b3821f
JH
3242
3243 if (*argrest == 'G')
3244 {
fa665e0b
JH
3245 int i;
3246 for (argrest++, i = 0; argrest[i] && argrest[i] != '/'; ) i++;
3247 queue_name = string_copyn(argrest, i);
3248 argrest += i;
3249 if (*argrest == '/') argrest++;
28b3821f
JH
3250 }
3251
3252 /* -q[f][f][l][G<name>]: Run the queue, optionally forced, optionally local
3253 only, optionally named, optionally starting from a given message id. */
059ec3d9
PH
3254
3255 if (*argrest == 0 &&
3256 (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1])))
3257 {
3258 queue_interval = 0;
3259 if (i+1 < argc && mac_ismsgid(argv[i+1]))
3260 start_queue_run_id = argv[++i];
3261 if (i+1 < argc && mac_ismsgid(argv[i+1]))
3262 stop_queue_run_id = argv[++i];
3263 }
3264
fa665e0b
JH
3265 /* -q[f][f][l][G<name>/]<n>: Run the queue at regular intervals, optionally
3266 forced, optionally local only, optionally named. */
059ec3d9 3267
55e70e76
JH
3268 else if ((queue_interval = readconf_readtime(*argrest ? argrest : argv[++i],
3269 0, FALSE)) <= 0)
059ec3d9 3270 {
55e70e76
JH
3271 fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]);
3272 exit(EXIT_FAILURE);
059ec3d9
PH
3273 }
3274 break;
3275
3276
3277 case 'R': /* Synonymous with -qR... */
3278 receiving_message = FALSE;
3279
3280 /* -Rf: As -R (below) but force all deliveries,
3281 -Rff: Ditto, but also thaw all frozen messages,
3282 -Rr: String is regex
3283 -Rrf: Regex and force
3284 -Rrff: Regex and force and thaw
3285
3286 in all cases provided there are no further characters in this
3287 argument. */
3288
3289 if (*argrest != 0)
3290 {
3291 int i;
55e70e76 3292 for (i = 0; i < nelem(rsopts); i++)
059ec3d9
PH
3293 if (Ustrcmp(argrest, rsopts[i]) == 0)
3294 {
3295 if (i != 2) queue_run_force = TRUE;
3296 if (i >= 2) deliver_selectstring_regex = TRUE;
3297 if (i == 1 || i == 4) deliver_force_thaw = TRUE;
3298 argrest += Ustrlen(rsopts[i]);
3299 }
059ec3d9
PH
3300 }
3301
3302 /* -R: Set string to match in addresses for forced queue run to
3303 pick out particular messages. */
3304
55e70e76
JH
3305 if (*argrest)
3306 deliver_selectstring = argrest;
3307 else if (i+1 < argc)
3308 deliver_selectstring = argv[++i];
3309 else
059ec3d9 3310 {
55e70e76
JH
3311 fprintf(stderr, "exim: string expected after -R\n");
3312 exit(EXIT_FAILURE);
059ec3d9 3313 }
059ec3d9
PH
3314 break;
3315
3316
3317 /* -r: an obsolete synonym for -f (see above) */
3318
3319
3320 /* -S: Like -R but works on sender. */
3321
3322 case 'S': /* Synonymous with -qS... */
3323 receiving_message = FALSE;
3324
3325 /* -Sf: As -S (below) but force all deliveries,
3326 -Sff: Ditto, but also thaw all frozen messages,
3327 -Sr: String is regex
3328 -Srf: Regex and force
3329 -Srff: Regex and force and thaw
3330
3331 in all cases provided there are no further characters in this
3332 argument. */
3333
55e70e76 3334 if (*argrest)
059ec3d9
PH
3335 {
3336 int i;
55e70e76 3337 for (i = 0; i < nelem(rsopts); i++)
059ec3d9
PH
3338 if (Ustrcmp(argrest, rsopts[i]) == 0)
3339 {
3340 if (i != 2) queue_run_force = TRUE;
3341 if (i >= 2) deliver_selectstring_sender_regex = TRUE;
3342 if (i == 1 || i == 4) deliver_force_thaw = TRUE;
3343 argrest += Ustrlen(rsopts[i]);
3344 }
059ec3d9
PH
3345 }
3346
3347 /* -S: Set string to match in addresses for forced queue run to
3348 pick out particular messages. */
3349
55e70e76
JH
3350 if (*argrest)
3351 deliver_selectstring_sender = argrest;
3352 else if (i+1 < argc)
3353 deliver_selectstring_sender = argv[++i];
3354 else
059ec3d9 3355 {
55e70e76
JH
3356 fprintf(stderr, "exim: string expected after -S\n");
3357 exit(EXIT_FAILURE);
059ec3d9 3358 }
059ec3d9
PH
3359 break;
3360
3361 /* -Tqt is an option that is exclusively for use by the testing suite.
3362 It is not recognized in other circumstances. It allows for the setting up
3363 of explicit "queue times" so that various warning/retry things can be
3364 tested. Otherwise variability of clock ticks etc. cause problems. */
3365
3366 case 'T':
3367 if (running_in_test_harness && Ustrcmp(argrest, "qt") == 0)
3368 fudged_queue_times = argv[++i];
3369 else badarg = TRUE;
3370 break;
3371
3372
3373 /* -t: Set flag to extract recipients from body of message. */
3374
3375 case 't':
3376 if (*argrest == 0) extract_recipients = TRUE;
3377
3378 /* -ti: Set flag to extract recipients from body of message, and also
3379 specify that dot does not end the message. */
3380
3381 else if (Ustrcmp(argrest, "i") == 0)
3382 {
3383 extract_recipients = TRUE;
3384 dot_ends = FALSE;
3385 }
3386
3387 /* -tls-on-connect: don't wait for STARTTLS (for old clients) */
3388
3389 #ifdef SUPPORT_TLS
817d9f57 3390 else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE;
059ec3d9
PH
3391 #endif
3392
3393 else badarg = TRUE;
3394 break;
3395
3396
3397 /* -U: This means "initial user submission" in sendmail, apparently. The
3398 doc claims that in future sendmail may refuse syntactically invalid
3399 messages instead of fixing them. For the moment, we just ignore it. */
3400
3401 case 'U':
3402 break;
3403
3404
3405 /* -v: verify things - this is a very low-level debugging */
3406
3407 case 'v':
3408 if (*argrest == 0)
3409 {
3410 debug_selector |= D_v;
3411 debug_file = stderr;
3412 }
3413 else badarg = TRUE;
3414 break;
3415
3416
3417 /* -x: AIX uses this to indicate some fancy 8-bit character stuff:
3418
3419 The -x flag tells the sendmail command that mail from a local
3420 mail program has National Language Support (NLS) extended characters
3421 in the body of the mail item. The sendmail command can send mail with
3422 extended NLS characters across networks that normally corrupts these
3423 8-bit characters.
3424
3425 As Exim is 8-bit clean, it just ignores this flag. */
3426
3427 case 'x':
3428 if (*argrest != 0) badarg = TRUE;
3429 break;
3430
a3fb9793
PP
3431 /* -X: in sendmail: takes one parameter, logfile, and sends debugging
3432 logs to that file. We swallow the parameter and otherwise ignore it. */
3433
3434 case 'X':
3435 if (*argrest == '\0')
a3fb9793
PP
3436 if (++i >= argc)
3437 {
3438 fprintf(stderr, "exim: string expected after -X\n");
3439 exit(EXIT_FAILURE);
3440 }
0ad2e0fc
JH
3441 break;
3442
3443 case 'z':
3444 if (*argrest == '\0')
3445 if (++i < argc) log_oneline = argv[i]; else
3446 {
3447 fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]);
3448 exit(EXIT_FAILURE);
3449 }
a3fb9793
PP
3450 break;
3451
059ec3d9
PH
3452 /* All other initial characters are errors */
3453
3454 default:
3455 badarg = TRUE;
3456 break;
3457 } /* End of high-level switch statement */
3458
3459 /* Failed to recognize the option, or syntax error */
3460
3461 if (badarg)
3462 {
3463 fprintf(stderr, "exim abandoned: unknown, malformed, or incomplete "
3464 "option %s\n", arg);
3465 exit(EXIT_FAILURE);
3466 }
3467 }
3468
3469
3cc66b45
PH
3470/* If -R or -S have been specified without -q, assume a single queue run. */
3471
55e70e76
JH
3472if ( (deliver_selectstring || deliver_selectstring_sender)
3473 && queue_interval < 0)
3474 queue_interval = 0;
3cc66b45
PH
3475
3476
059ec3d9 3477END_ARG:
81ea09ca
NM
3478/* If usage_wanted is set we call the usage function - which never returns */
3479if (usage_wanted) exim_usage(called_as);
3480
3481/* Arguments have been processed. Check for incompatibilities. */
059ec3d9
PH
3482if ((
3483 (smtp_input || extract_recipients || recipients_arg < argc) &&
3484 (daemon_listen || queue_interval >= 0 || bi_option ||
3485 test_retry_arg >= 0 || test_rewrite_arg >= 0 ||
f05da2e8 3486 filter_test != FTEST_NONE || (msg_action_arg > 0 && !one_msg_action))
059ec3d9
PH
3487 ) ||
3488 (
3489 msg_action_arg > 0 &&
44915474 3490 (daemon_listen || queue_interval > 0 || list_options ||
0ef732d9
PH
3491 (checking && msg_action != MSG_LOAD) ||
3492 bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0)
059ec3d9
PH
3493 ) ||
3494 (
55e70e76 3495 (daemon_listen || queue_interval > 0) &&
059ec3d9 3496 (sender_address != NULL || list_options || list_queue || checking ||
0ef732d9 3497 bi_option)
059ec3d9
PH
3498 ) ||
3499 (
3500 daemon_listen && queue_interval == 0
3501 ) ||
3502 (
9ee44efb
PP
3503 inetd_wait_mode && queue_interval >= 0
3504 ) ||
3505 (
059ec3d9
PH
3506 list_options &&
3507 (checking || smtp_input || extract_recipients ||
f05da2e8 3508 filter_test != FTEST_NONE || bi_option)
059ec3d9
PH
3509 ) ||
3510 (
3511 verify_address_mode &&
3512 (address_test_mode || smtp_input || extract_recipients ||
f05da2e8 3513 filter_test != FTEST_NONE || bi_option)
059ec3d9
PH
3514 ) ||
3515 (
3516 address_test_mode && (smtp_input || extract_recipients ||
f05da2e8 3517 filter_test != FTEST_NONE || bi_option)
059ec3d9
PH
3518 ) ||
3519 (
f05da2e8 3520 smtp_input && (sender_address != NULL || filter_test != FTEST_NONE ||
059ec3d9
PH
3521 extract_recipients)
3522 ) ||
3523 (
3524 deliver_selectstring != NULL && queue_interval < 0
328895cc
PH
3525 ) ||
3526 (
3527 msg_action == MSG_LOAD &&
3528 (!expansion_test || expansion_test_message != NULL)
059ec3d9
PH
3529 )
3530 )
3531 {
3532 fprintf(stderr, "exim: incompatible command-line options or arguments\n");
3533 exit(EXIT_FAILURE);
3534 }
3535
3536/* If debugging is set up, set the file and the file descriptor to pass on to
3537child processes. It should, of course, be 2 for stderr. Also, force the daemon
3538to run in the foreground. */
3539
3540if (debug_selector != 0)
3541 {
3542 debug_file = stderr;
3543 debug_fd = fileno(debug_file);
3544 background_daemon = FALSE;
3545 if (running_in_test_harness) millisleep(100); /* lets caller finish */
3546 if (debug_selector != D_v) /* -v only doesn't show this */
3547 {
3548 debug_printf("Exim version %s uid=%ld gid=%ld pid=%d D=%x\n",
3549 version_string, (long int)real_uid, (long int)real_gid, (int)getpid(),
3550 debug_selector);
6545de78
PP
3551 if (!version_printed)
3552 show_whats_supported(stderr);
059ec3d9
PH
3553 }
3554 }
3555
3556/* When started with root privilege, ensure that the limits on the number of
3557open files and the number of processes (where that is accessible) are
3558sufficiently large, or are unset, in case Exim has been called from an
3559environment where the limits are screwed down. Not all OS have the ability to
3560change some of these limits. */
3561
3562if (unprivileged)
3563 {
3564 DEBUG(D_any) debug_print_ids(US"Exim has no root privilege:");
3565 }
3566else
3567 {
3568 struct rlimit rlp;
3569
3570 #ifdef RLIMIT_NOFILE
3571 if (getrlimit(RLIMIT_NOFILE, &rlp) < 0)
3572 {
3573 log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NOFILE) failed: %s",
3574 strerror(errno));
3575 rlp.rlim_cur = rlp.rlim_max = 0;
3576 }
eb2c0248
PH
3577
3578 /* I originally chose 1000 as a nice big number that was unlikely to
a494b1e1
PH
3579 be exceeded. It turns out that some older OS have a fixed upper limit of
3580 256. */
eb2c0248 3581
059ec3d9
PH
3582 if (rlp.rlim_cur < 1000)
3583 {
3584 rlp.rlim_cur = rlp.rlim_max = 1000;
3585 if (setrlimit(RLIMIT_NOFILE, &rlp) < 0)
eb2c0248 3586 {
a494b1e1
PH
3587 rlp.rlim_cur = rlp.rlim_max = 256;
3588 if (setrlimit(RLIMIT_NOFILE, &rlp) < 0)
3589 log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NOFILE) failed: %s",
3590 strerror(errno));
eb2c0248 3591 }
059ec3d9
PH
3592 }
3593 #endif
3594
3595 #ifdef RLIMIT_NPROC
3596 if (getrlimit(RLIMIT_NPROC, &rlp) < 0)
3597 {
3598 log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NPROC) failed: %s",
3599 strerror(errno));
3600 rlp.rlim_cur = rlp.rlim_max = 0;
3601 }
3602
3603 #ifdef RLIM_INFINITY
3604 if (rlp.rlim_cur != RLIM_INFINITY && rlp.rlim_cur < 1000)
3605 {
3606 rlp.rlim_cur = rlp.rlim_max = RLIM_INFINITY;
3607 #else
3608 if (rlp.rlim_cur < 1000)
3609 {
3610 rlp.rlim_cur = rlp.rlim_max = 1000;
3611 #endif
3612 if (setrlimit(RLIMIT_NPROC, &rlp) < 0)
3613 log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NPROC) failed: %s",
3614 strerror(errno));
3615 }
3616 #endif
3617 }
3618
3619/* Exim is normally entered as root (but some special configurations are
3620possible that don't do this). However, it always spins off sub-processes that
3621set their uid and gid as required for local delivery. We don't want to pass on
3622any extra groups that root may belong to, so we want to get rid of them all at
3623this point.
3624
3625We need to obey setgroups() at this stage, before possibly giving up root
3626privilege for a changed configuration file, but later on we might need to
3627check on the additional groups for the admin user privilege - can't do that
3628till after reading the config, which might specify the exim gid. Therefore,
3629save the group list here first. */
3630
3631group_count = getgroups(NGROUPS_MAX, group_list);
cd59ab18
PP
3632if (group_count < 0)
3633 {
3634 fprintf(stderr, "exim: getgroups() failed: %s\n", strerror(errno));
3635 exit(EXIT_FAILURE);
3636 }
059ec3d9
PH
3637
3638/* There is a fundamental difference in some BSD systems in the matter of
3639groups. FreeBSD and BSDI are known to be different; NetBSD and OpenBSD are
3640known not to be different. On the "different" systems there is a single group
3641list, and the first entry in it is the current group. On all other versions of
3642Unix there is a supplementary group list, which is in *addition* to the current
3643group. Consequently, to get rid of all extraneous groups on a "standard" system
3644you pass over 0 groups to setgroups(), while on a "different" system you pass
3645over a single group - the current group, which is always the first group in the
3646list. Calling setgroups() with zero groups on a "different" system results in
3647an error return. The following code should cope with both types of system.
3648
3649However, if this process isn't running as root, setgroups() can't be used
3650since you have to be root to run it, even if throwing away groups. Not being
3651root here happens only in some unusual configurations. We just ignore the
3652error. */
3653
3654if (setgroups(0, NULL) != 0)
3655 {
3656 if (setgroups(1, group_list) != 0 && !unprivileged)
3657 {
3658 fprintf(stderr, "exim: setgroups() failed: %s\n", strerror(errno));
3659 exit(EXIT_FAILURE);
3660 }
3661 }
3662
3663/* If the configuration file name has been altered by an argument on the
3664command line (either a new file name or a macro definition) and the caller is
cd25e41d
DW
3665not root, or if this is a filter testing run, remove any setuid privilege the
3666program has and run as the underlying user.
059ec3d9 3667
cd25e41d
DW
3668The exim user is locked out of this, which severely restricts the use of -C
3669for some purposes.
059ec3d9
PH
3670
3671Otherwise, set the real ids to the effective values (should be root unless run
3672from inetd, which it can either be root or the exim uid, if one is configured).
3673
3674There is a private mechanism for bypassing some of this, in order to make it
3675possible to test lots of configurations automatically, without having either to
3676recompile each time, or to patch in an actual configuration file name and other
3677values (such as the path name). If running in the test harness, pretend that
3678configuration file changes and macro definitions haven't happened. */
3679
3680if (( /* EITHER */
a7cbbf50
PP
3681 (!trusted_config || /* Config changed, or */
3682 !macros_trusted()) && /* impermissible macros and */
059ec3d9 3683 real_uid != root_uid && /* Not root, and */
059ec3d9
PH
3684 !running_in_test_harness /* Not fudged */
3685 ) || /* OR */
3686 expansion_test /* expansion testing */
3687 || /* OR */
f05da2e8 3688 filter_test != FTEST_NONE) /* Filter testing */
059ec3d9
PH
3689 {
3690 setgroups(group_count, group_list);
3691 exim_setugid(real_uid, real_gid, FALSE,
3692 US"-C, -D, -be or -bf forces real uid");
3693 removed_privilege = TRUE;
3694
3695 /* In the normal case when Exim is called like this, stderr is available
3696 and should be used for any logging information because attempts to write
3697 to the log will usually fail. To arrange this, we unset really_exim. However,
3698 if no stderr is available there is no point - we might as well have a go
b7487bce 3699 at the log (if it fails, syslog will be written).
059ec3d9 3700
b7487bce
PP
3701 Note that if the invoker is Exim, the logs remain available. Messing with
3702 this causes unlogged successful deliveries. */
3703
3704 if ((log_stderr != NULL) && (real_uid != exim_uid))
3705 really_exim = FALSE;
059ec3d9
PH
3706 }
3707
3708/* Privilege is to be retained for the moment. It may be dropped later,
3709depending on the job that this Exim process has been asked to do. For now, set
3710the real uid to the effective so that subsequent re-execs of Exim are done by a
3711privileged user. */
3712
3713else exim_setugid(geteuid(), getegid(), FALSE, US"forcing real = effective");
3714
f05da2e8 3715/* If testing a filter, open the file(s) now, before wasting time doing other
059ec3d9
PH
3716setups and reading the message. */
3717
f05da2e8
PH
3718if ((filter_test & FTEST_SYSTEM) != 0)
3719 {
3720 filter_sfd = Uopen(filter_test_sfile, O_RDONLY, 0);
3721 if (filter_sfd < 0)
3722 {
3723 fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_sfile,
3724 strerror(errno));
3725 return EXIT_FAILURE;
3726 }
3727 }
3728
3729if ((filter_test & FTEST_USER) != 0)
059ec3d9 3730 {
f05da2e8
PH
3731 filter_ufd = Uopen(filter_test_ufile, O_RDONLY, 0);
3732 if (filter_ufd < 0)
059ec3d9 3733 {
f05da2e8 3734 fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_ufile,
059ec3d9
PH
3735 strerror(errno));
3736 return EXIT_FAILURE;
3737 }
3738 }
3739
8829633f
PP
3740/* Initialise lookup_list
3741If debugging, already called above via version reporting.
3742In either case, we initialise the list of available lookups while running
3743as root. All dynamically modules are loaded from a directory which is
3744hard-coded into the binary and is code which, if not a module, would be
3745part of Exim already. Ability to modify the content of the directory
3746is equivalent to the ability to modify a setuid binary!
3747
3748This needs to happen before we read the main configuration. */
3749init_lookup_list();
3750
8c5d388a 3751#ifdef SUPPORT_I18N
9d4319df
JH
3752if (running_in_test_harness) smtputf8_advertise_hosts = NULL;
3753#endif
3754
059ec3d9
PH
3755/* Read the main runtime configuration data; this gives up if there
3756is a failure. It leaves the configuration file open so that the subsequent
3de973a2 3757configuration data for delivery can be read if needed.
059ec3d9 3758
3de973a2
HSHR
3759NOTE: immediatly after opening the configuration file we change the working
3760directory to "/"! Later we change to $spool_directory. We do it there, because
3761during readconf_main() some expansion takes place already. */
bc3c7bb7 3762
3615fa9a 3763/* Store the initial cwd before we change directories */
3ae121c9 3764if ((initial_cwd = os_getcwd(NULL, 0)) == NULL)
fae3a611
HSHR
3765 {
3766 perror("exim: can't get the current working directory");
3767 exit(EXIT_FAILURE);
3768 }
3615fa9a 3769
34e86e20
HSHR
3770/* checking:
3771 -be[m] expansion test -
3772 -b[fF] filter test new
3773 -bh[c] host test -
3774 -bmalware malware_test_file new
3775 -brt retry test new
3776 -brw rewrite test new
3777 -bt address test -
3778 -bv[s] address verify -
3779 list_options:
3780 -bP <option> (except -bP config, which sets list_config)
3781
3782If any of these options is set, we suppress warnings about configuration
3783issues (currently about tls_advertise_hosts and keep_environment not being
3784defined) */
3785
3786readconf_main(checking || list_options);
059ec3d9 3787
3de973a2
HSHR
3788/* Now in directory "/" */
3789
bc3c7bb7
HSHR
3790if (cleanup_environment() == FALSE)
3791 log_write(0, LOG_PANIC_DIE, "Can't cleanup environment");
3792
3793
a3fb9793
PP
3794/* If an action on specific messages is requested, or if a daemon or queue
3795runner is being started, we need to know if Exim was called by an admin user.
3796This is the case if the real user is root or exim, or if the real group is
3797exim, or if one of the supplementary groups is exim or a group listed in
3798admin_groups. We don't fail all message actions immediately if not admin_user,
3799since some actions can be performed by non-admin users. Instead, set admin_user
3800for later interrogation. */
3801
3802if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid)
3803 admin_user = TRUE;
3804else
3805 {
3806 int i, j;
3807 for (i = 0; i < group_count; i++)
3808 {
3809 if (group_list[i] == exim_gid) admin_user = TRUE;
3810 else if (admin_groups != NULL)
3811 {
3812 for (j = 1; j <= (int)(admin_groups[0]); j++)
3813 if (admin_groups[j] == group_list[i])
3814 { admin_user = TRUE; break; }
3815 }
3816 if (admin_user) break;
3817 }
3818 }
3819
3820/* Another group of privileged users are the trusted users. These are root,
3821exim, and any caller matching trusted_users or trusted_groups. Trusted callers
3822are permitted to specify sender_addresses with -f on the command line, and
3823other message parameters as well. */
3824
3825if (real_uid == root_uid || real_uid == exim_uid)
3826 trusted_caller = TRUE;
3827else
3828 {
3829 int i, j;
3830
3831 if (trusted_users != NULL)
3832 {
3833 for (i = 1; i <= (int)(trusted_users[0]); i++)
3834 if (trusted_users[i] == real_uid)
3835 { trusted_caller = TRUE; break; }
3836 }
3837
3838 if (!trusted_caller && trusted_groups != NULL)
3839 {
3840 for (i = 1; i <= (int)(trusted_groups[0]); i++)
3841 {
3842 if (trusted_groups[i] == real_gid)
3843 trusted_caller = TRUE;
3844 else for (j = 0; j < group_count; j++)
3845 {
3846 if (trusted_groups[i] == group_list[j])
3847 { trusted_caller = TRUE; break; }
3848 }
3849 if (trusted_caller) break;
3850 }
3851 }
3852 }
3853
059ec3d9
PH
3854/* Handle the decoding of logging options. */
3855
6c6d6e48 3856decode_bits(log_selector, log_selector_size, log_notall,
ed7f7860 3857 log_selector_string, log_options, log_options_count, US"log", 0);
059ec3d9
PH
3858
3859DEBUG(D_any)
3860 {
6c6d6e48 3861 int i;
059ec3d9 3862 debug_printf("configuration file is %s\n", config_main_filename);
6c6d6e48
TF
3863 debug_printf("log selectors =");
3864 for (i = 0; i < log_selector_size; i++)
3865 debug_printf(" %08x", log_selector[i]);
3866 debug_printf("\n");
059ec3d9
PH
3867 }
3868
3869/* If domain literals are not allowed, check the sender address that was
3870supplied with -f. Ditto for a stripped trailing dot. */
3871
3872if (sender_address != NULL)
3873 {
3874 if (sender_address[sender_address_domain] == '[' && !allow_domain_literals)
3875 {
3876 fprintf(stderr, "exim: bad -f address \"%s\": domain literals not "
3877 "allowed\n", sender_address);
3878 return EXIT_FAILURE;
3879 }
3880 if (f_end_dot && !strip_trailing_dot)
3881 {
3882 fprintf(stderr, "exim: bad -f address \"%s.\": domain is malformed "
3883 "(trailing dot not allowed)\n", sender_address);
3884 return EXIT_FAILURE;
3885 }
3886 }
3887
a3fb9793
PP
3888/* See if an admin user overrode our logging. */
3889
3890if (cmdline_syslog_name != NULL)
3891 {
3892 if (admin_user)
3893 {
3894 syslog_processname = cmdline_syslog_name;
3895 log_file_path = string_copy(CUS"syslog");
3896 }
3897 else
3898 {
3899 /* not a panic, non-privileged users should not be able to spam paniclog */
3900 fprintf(stderr,
3901 "exim: you lack sufficient privilege to specify syslog process name\n");
3902 return EXIT_FAILURE;
3903 }
3904 }
3905
059ec3d9
PH
3906/* Paranoia check of maximum lengths of certain strings. There is a check
3907on the length of the log file path in log.c, which will come into effect
3908if there are any calls to write the log earlier than this. However, if we
3909get this far but the string is very long, it is better to stop now than to
3910carry on and (e.g.) receive a message and then have to collapse. The call to
3911log_write() from here will cause the ultimate panic collapse if the complete
3912file name exceeds the buffer length. */
3913
3914if (Ustrlen(log_file_path) > 200)
3915 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3916 "log_file_path is longer than 200 chars: aborting");
3917
3918if (Ustrlen(pid_file_path) > 200)
3919 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3920 "pid_file_path is longer than 200 chars: aborting");
3921
3922if (Ustrlen(spool_directory) > 200)
3923 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3924 "spool_directory is longer than 200 chars: aborting");
3925
3926/* Length check on the process name given to syslog for its TAG field,
3927which is only permitted to be 32 characters or less. See RFC 3164. */
3928
3929if (Ustrlen(syslog_processname) > 32)
3930 log_write(0, LOG_MAIN|LOG_PANIC_DIE,
3931 "syslog_processname is longer than 32 chars: aborting");
3932