Commit | Line | Data |
---|---|---|
059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
80fea873 | 5 | /* Copyright (c) University of Cambridge 1995 - 2016 */ |
059ec3d9 PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | ||
9 | /* The main function: entry point, initialization, and high-level control. | |
10 | Also a few functions that don't naturally fit elsewhere. */ | |
11 | ||
12 | ||
13 | #include "exim.h" | |
14 | ||
01f3091a JH |
15 | #ifdef __GLIBC__ |
16 | # include <gnu/libc-version.h> | |
17 | #endif | |
18 | ||
f797c123 JH |
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 | ||
6545de78 PP |
26 | extern void init_lookup_list(void); |
27 | ||
059ec3d9 PH |
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 | |
35 | for store allocation via Exim's store manager. The normal calls are actually | |
36 | macros that pass over location information to make tracing easier. These | |
37 | functions just interface to the standard macro calls. A good compiler will | |
38 | optimize out the tail recursion and so not make them too expensive. There | |
39 | are two sets of functions; one for use when we want to retain the compiled | |
40 | regular expression for a long time; the other for short-term use. */ | |
41 | ||
42 | static void * | |
43 | function_store_get(size_t size) | |
44 | { | |
45 | return store_get((int)size); | |
46 | } | |
47 | ||
48 | static void | |
49 | function_dummy_free(void *block) { block = block; } | |
50 | ||
51 | static void * | |
52 | function_store_malloc(size_t size) | |
53 | { | |
54 | return store_malloc((int)size); | |
55 | } | |
56 | ||
57 | static void | |
58 | function_store_free(void *block) | |
59 | { | |
60 | store_free(block); | |
61 | } | |
62 | ||
63 | ||
64 | ||
65 | ||
98a90c36 PP |
66 | /************************************************* |
67 | * Enums for cmdline interface * | |
68 | *************************************************/ | |
69 | ||
70 | enum commandline_info { CMDINFO_NONE=0, | |
36a3ae5f | 71 | CMDINFO_HELP, CMDINFO_SIEVE, CMDINFO_DSCP }; |
98a90c36 PP |
72 | |
73 | ||
74 | ||
75 | ||
059ec3d9 PH |
76 | /************************************************* |
77 | * Compile regular expression and panic on fail * | |
78 | *************************************************/ | |
79 | ||
80 | /* This function is called when failure to compile a regular expression leads | |
81 | to a panic exit. In other cases, pcre_compile() is called directly. In many | |
82 | cases where this function is used, the results of the compilation are to be | |
83 | placed in long-lived store, so we temporarily reset the store management | |
84 | functions that PCRE uses if the use_malloc flag is set. | |
85 | ||
86 | Argument: | |
87 | pattern the pattern to compile | |
88 | caseless TRUE if caseless matching is required | |
89 | use_malloc TRUE if compile into malloc store | |
90 | ||
91 | Returns: pointer to the compiled pattern | |
92 | */ | |
93 | ||
94 | const pcre * | |
476be7e2 | 95 | regex_must_compile(const uschar *pattern, BOOL caseless, BOOL use_malloc) |
059ec3d9 PH |
96 | { |
97 | int offset; | |
98 | int options = PCRE_COPT; | |
99 | const pcre *yield; | |
100 | const uschar *error; | |
101 | if (use_malloc) | |
102 | { | |
103 | pcre_malloc = function_store_malloc; | |
104 | pcre_free = function_store_free; | |
105 | } | |
106 | if (caseless) options |= PCRE_CASELESS; | |
476be7e2 | 107 | yield = pcre_compile(CCS pattern, options, (const char **)&error, &offset, NULL); |
059ec3d9 PH |
108 | pcre_malloc = function_store_get; |
109 | pcre_free = function_dummy_free; | |
110 | if (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); | |
113 | return 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 | |
124 | the matched substrings. | |
125 | ||
126 | Arguments: | |
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 | ||
134 | Returns: TRUE or FALSE | |
135 | */ | |
136 | ||
137 | BOOL | |
1dc92d5a | 138 | regex_match_and_setup(const pcre *re, const uschar *subject, int options, int setup) |
059ec3d9 PH |
139 | { |
140 | int ovector[3*(EXPAND_MAXN+1)]; | |
1dc92d5a JH |
141 | uschar * s = string_copy(subject); /* de-constifying */ |
142 | int n = pcre_exec(re, NULL, CS s, Ustrlen(s), 0, | |
059ec3d9 PH |
143 | PCRE_EOPT | options, ovector, sizeof(ovector)/sizeof(int)); |
144 | BOOL yield = n >= 0; | |
145 | if (n == 0) n = EXPAND_MAXN + 1; | |
146 | if (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]; |
059ec3d9 PH |
153 | expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn]; |
154 | } | |
155 | expand_nmax--; | |
156 | } | |
157 | return yield; | |
158 | } | |
159 | ||
160 | ||
161 | ||
162 | ||
921b12ca TF |
163 | /************************************************* |
164 | * Set up processing details * | |
165 | *************************************************/ | |
166 | ||
167 | /* Save a text string for dumping when SIGUSR1 is received. | |
168 | Do checks for overruns. | |
169 | ||
170 | Arguments: format and arguments, as for printf() | |
171 | Returns: nothing | |
172 | */ | |
173 | ||
174 | void | |
175 | set_process_info(const char *format, ...) | |
176 | { | |
177 | int len; | |
178 | va_list ap; | |
179 | sprintf(CS process_info, "%5d ", (int)getpid()); | |
180 | len = Ustrlen(process_info); | |
181 | va_start(ap, format); | |
182 | if (!string_vformat(process_info + len, PROCESS_INFO_SIZE - len - 2, format, ap)) | |
183 | Ustrcpy(process_info + len, "**** string overflowed buffer ****"); | |
184 | len = Ustrlen(process_info); | |
185 | process_info[len+0] = '\n'; | |
186 | process_info[len+1] = '\0'; | |
187 | process_info_len = len + 1; | |
188 | DEBUG(D_process_info) debug_printf("set_process_info: %s", process_info); | |
189 | va_end(ap); | |
190 | } | |
191 | ||
192 | ||
193 | ||
194 | ||
059ec3d9 PH |
195 | /************************************************* |
196 | * Handler for SIGUSR1 * | |
197 | *************************************************/ | |
198 | ||
199 | /* SIGUSR1 causes any exim process to write to the process log details of | |
200 | what it is currently doing. It will only be used if the OS is capable of | |
201 | setting up a handler that causes automatic restarting of any system call | |
202 | that is in progress at the time. | |
203 | ||
921b12ca TF |
204 | This function takes care to be signal-safe. |
205 | ||
059ec3d9 PH |
206 | Argument: the signal number (SIGUSR1) |
207 | Returns: nothing | |
208 | */ | |
209 | ||
210 | static void | |
211 | usr1_handler(int sig) | |
212 | { | |
921b12ca TF |
213 | int fd; |
214 | ||
215 | os_restarting_signal(sig, usr1_handler); | |
216 | ||
217 | fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE); | |
218 | if (fd < 0) | |
219 | { | |
220 | /* If we are already running as the Exim user, try to create it in the | |
221 | current process (assuming spool_directory exists). Otherwise, if we are | |
222 | root, do the creation in an exim:exim subprocess. */ | |
223 | ||
224 | int euid = geteuid(); | |
225 | if (euid == exim_uid) | |
226 | fd = Uopen(process_log_path, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE); | |
227 | else if (euid == root_uid) | |
228 | fd = log_create_as_exim(process_log_path); | |
229 | } | |
230 | ||
231 | /* If we are neither exim nor root, or if we failed to create the log file, | |
232 | give up. There is not much useful we can do with errors, since we don't want | |
233 | to disrupt whatever is going on outside the signal handler. */ | |
234 | ||
235 | if (fd < 0) return; | |
236 | ||
2f21487f | 237 | (void)write(fd, process_info, process_info_len); |
921b12ca | 238 | (void)close(fd); |
059ec3d9 PH |
239 | } |
240 | ||
241 | ||
242 | ||
243 | /************************************************* | |
244 | * Timeout handler * | |
245 | *************************************************/ | |
246 | ||
247 | /* This handler is enabled most of the time that Exim is running. The handler | |
248 | doesn't actually get used unless alarm() has been called to set a timer, to | |
249 | place a time limit on a system call of some kind. When the handler is run, it | |
250 | re-enables itself. | |
251 | ||
252 | There are some other SIGALRM handlers that are used in special cases when more | |
253 | than just a flag setting is required; for example, when reading a message's | |
254 | input. These are normally set up in the code module that uses them, and the | |
255 | SIGALRM handler is reset to this one afterwards. | |
256 | ||
257 | Argument: the signal value (SIGALRM) | |
258 | Returns: nothing | |
259 | */ | |
260 | ||
261 | void | |
262 | sigalrm_handler(int sig) | |
263 | { | |
264 | sig = sig; /* Keep picky compilers happy */ | |
265 | sigalrm_seen = TRUE; | |
266 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
267 | } | |
268 | ||
269 | ||
270 | ||
271 | /************************************************* | |
272 | * Sleep for a fractional time interval * | |
273 | *************************************************/ | |
274 | ||
275 | /* This function is called by millisleep() and exim_wait_tick() to wait for a | |
276 | period of time that may include a fraction of a second. The coding is somewhat | |
eb2c0248 PH |
277 | tedious. We do not expect setitimer() ever to fail, but if it does, the process |
278 | will wait for ever, so we panic in this instance. (There was a case of this | |
279 | when a bug in a function that calls milliwait() caused it to pass invalid data. | |
7086e875 | 280 | That's when I added the check. :-) |
059ec3d9 | 281 | |
0f8ba377 JH |
282 | We assume it to be not worth sleeping for under 100us; this value will |
283 | require revisiting as hardware advances. This avoids the issue of | |
284 | a zero-valued timer setting meaning "never fire". | |
285 | ||
059ec3d9 PH |
286 | Argument: an itimerval structure containing the interval |
287 | Returns: nothing | |
288 | */ | |
289 | ||
290 | static void | |
291 | milliwait(struct itimerval *itval) | |
292 | { | |
293 | sigset_t sigmask; | |
294 | sigset_t old_sigmask; | |
0f8ba377 JH |
295 | |
296 | if (itval->it_value.tv_usec < 100 && itval->it_value.tv_sec == 0) | |
297 | return; | |
059ec3d9 PH |
298 | (void)sigemptyset(&sigmask); /* Empty mask */ |
299 | (void)sigaddset(&sigmask, SIGALRM); /* Add SIGALRM */ | |
300 | (void)sigprocmask(SIG_BLOCK, &sigmask, &old_sigmask); /* Block SIGALRM */ | |
7086e875 | 301 | if (setitimer(ITIMER_REAL, itval, NULL) < 0) /* Start timer */ |
eb2c0248 PH |
302 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
303 | "setitimer() failed: %s", strerror(errno)); | |
059ec3d9 PH |
304 | (void)sigfillset(&sigmask); /* All signals */ |
305 | (void)sigdelset(&sigmask, SIGALRM); /* Remove SIGALRM */ | |
306 | (void)sigsuspend(&sigmask); /* Until SIGALRM */ | |
307 | (void)sigprocmask(SIG_SETMASK, &old_sigmask, NULL); /* Restore mask */ | |
308 | } | |
309 | ||
310 | ||
311 | ||
312 | ||
313 | /************************************************* | |
314 | * Millisecond sleep function * | |
315 | *************************************************/ | |
316 | ||
317 | /* The basic sleep() function has a granularity of 1 second, which is too rough | |
318 | in some cases - for example, when using an increasing delay to slow down | |
319 | spammers. | |
320 | ||
321 | Argument: number of millseconds | |
322 | Returns: nothing | |
323 | */ | |
324 | ||
325 | void | |
326 | millisleep(int msec) | |
327 | { | |
328 | struct itimerval itval; | |
329 | itval.it_interval.tv_sec = 0; | |
330 | itval.it_interval.tv_usec = 0; | |
331 | itval.it_value.tv_sec = msec/1000; | |
332 | itval.it_value.tv_usec = (msec % 1000) * 1000; | |
333 | milliwait(&itval); | |
334 | } | |
335 | ||
336 | ||
337 | ||
338 | /************************************************* | |
339 | * Compare microsecond times * | |
340 | *************************************************/ | |
341 | ||
342 | /* | |
343 | Arguments: | |
344 | tv1 the first time | |
345 | tv2 the second time | |
346 | ||
347 | Returns: -1, 0, or +1 | |
348 | */ | |
349 | ||
350 | int | |
351 | exim_tvcmp(struct timeval *t1, struct timeval *t2) | |
352 | { | |
353 | if (t1->tv_sec > t2->tv_sec) return +1; | |
354 | if (t1->tv_sec < t2->tv_sec) return -1; | |
355 | if (t1->tv_usec > t2->tv_usec) return +1; | |
356 | if (t1->tv_usec < t2->tv_usec) return -1; | |
357 | return 0; | |
358 | } | |
359 | ||
360 | ||
361 | ||
362 | ||
363 | /************************************************* | |
364 | * Clock tick wait function * | |
365 | *************************************************/ | |
366 | ||
367 | /* Exim uses a time + a pid to generate a unique identifier in two places: its | |
368 | message IDs, and in file names for maildir deliveries. Because some OS now | |
369 | re-use pids within the same second, sub-second times are now being used. | |
370 | However, for absolute certaintly, we must ensure the clock has ticked before | |
371 | allowing the relevant process to complete. At the time of implementation of | |
372 | this code (February 2003), the speed of processors is such that the clock will | |
373 | invariably have ticked already by the time a process has done its job. This | |
374 | function prepares for the time when things are faster - and it also copes with | |
375 | clocks that go backwards. | |
376 | ||
377 | Arguments: | |
378 | then_tv A timeval which was used to create uniqueness; its usec field | |
379 | has been rounded down to the value of the resolution. | |
380 | We want to be sure the current time is greater than this. | |
381 | resolution The resolution that was used to divide the microseconds | |
382 | (1 for maildir, larger for message ids) | |
383 | ||
384 | Returns: nothing | |
385 | */ | |
386 | ||
387 | void | |
388 | exim_wait_tick(struct timeval *then_tv, int resolution) | |
389 | { | |
390 | struct timeval now_tv; | |
391 | long int now_true_usec; | |
392 | ||
393 | (void)gettimeofday(&now_tv, NULL); | |
394 | now_true_usec = now_tv.tv_usec; | |
395 | now_tv.tv_usec = (now_true_usec/resolution) * resolution; | |
396 | ||
397 | if (exim_tvcmp(&now_tv, then_tv) <= 0) | |
398 | { | |
399 | struct itimerval itval; | |
400 | itval.it_interval.tv_sec = 0; | |
401 | itval.it_interval.tv_usec = 0; | |
402 | itval.it_value.tv_sec = then_tv->tv_sec - now_tv.tv_sec; | |
403 | itval.it_value.tv_usec = then_tv->tv_usec + resolution - now_true_usec; | |
404 | ||
405 | /* We know that, overall, "now" is less than or equal to "then". Therefore, a | |
406 | negative value for the microseconds is possible only in the case when "now" | |
407 | is more than a second less than "then". That means that itval.it_value.tv_sec | |
408 | is greater than zero. The following correction is therefore safe. */ | |
409 | ||
410 | if (itval.it_value.tv_usec < 0) | |
411 | { | |
412 | itval.it_value.tv_usec += 1000000; | |
413 | itval.it_value.tv_sec -= 1; | |
414 | } | |
415 | ||
416 | DEBUG(D_transport|D_receive) | |
417 | { | |
418 | if (!running_in_test_harness) | |
419 | { | |
d0291a0a | 420 | debug_printf("tick check: " TIME_T_FMT ".%06lu " TIME_T_FMT ".%06lu\n", |
7437665e JH |
421 | then_tv->tv_sec, (long) then_tv->tv_usec, |
422 | now_tv.tv_sec, (long) now_tv.tv_usec); | |
d0291a0a JH |
423 | debug_printf("waiting " TIME_T_FMT ".%06lu\n", |
424 | itval.it_value.tv_sec, (long) itval.it_value.tv_usec); | |
059ec3d9 PH |
425 | } |
426 | } | |
427 | ||
428 | milliwait(&itval); | |
429 | } | |
430 | } | |
431 | ||
432 | ||
433 | ||
434 | ||
2632889e PH |
435 | /************************************************* |
436 | * Call fopen() with umask 777 and adjust mode * | |
437 | *************************************************/ | |
438 | ||
439 | /* Exim runs with umask(0) so that files created with open() have the mode that | |
440 | is specified in the open() call. However, there are some files, typically in | |
441 | the spool directory, that are created with fopen(). They end up world-writeable | |
442 | if no precautions are taken. Although the spool directory is not accessible to | |
443 | the world, this is an untidiness. So this is a wrapper function for fopen() | |
444 | that sorts out the mode of the created file. | |
445 | ||
446 | Arguments: | |
447 | filename the file name | |
448 | options the fopen() options | |
449 | mode the required mode | |
450 | ||
451 | Returns: the fopened FILE or NULL | |
452 | */ | |
453 | ||
454 | FILE * | |
1ba28e2b | 455 | modefopen(const uschar *filename, const char *options, mode_t mode) |
2632889e | 456 | { |
67d175de PH |
457 | mode_t saved_umask = umask(0777); |
458 | FILE *f = Ufopen(filename, options); | |
459 | (void)umask(saved_umask); | |
2632889e PH |
460 | if (f != NULL) (void)fchmod(fileno(f), mode); |
461 | return f; | |
462 | } | |
463 | ||
464 | ||
465 | ||
466 | ||
059ec3d9 PH |
467 | /************************************************* |
468 | * Ensure stdin, stdout, and stderr exist * | |
469 | *************************************************/ | |
470 | ||
471 | /* Some operating systems grumble if an exec() happens without a standard | |
472 | input, output, and error (fds 0, 1, 2) being defined. The worry is that some | |
473 | file will be opened and will use these fd values, and then some other bit of | |
474 | code will assume, for example, that it can write error messages to stderr. | |
475 | This function ensures that fds 0, 1, and 2 are open if they do not already | |
476 | exist, by connecting them to /dev/null. | |
477 | ||
478 | This function is also used to ensure that std{in,out,err} exist at all times, | |
479 | so that if any library that Exim calls tries to use them, it doesn't crash. | |
480 | ||
481 | Arguments: None | |
482 | Returns: Nothing | |
483 | */ | |
484 | ||
485 | void | |
486 | exim_nullstd(void) | |
487 | { | |
488 | int i; | |
489 | int devnull = -1; | |
490 | struct stat statbuf; | |
491 | for (i = 0; i <= 2; i++) | |
492 | { | |
493 | if (fstat(i, &statbuf) < 0 && errno == EBADF) | |
494 | { | |
495 | if (devnull < 0) devnull = open("/dev/null", O_RDWR); | |
496 | if (devnull < 0) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", | |
497 | string_open_failed(errno, "/dev/null")); | |
1fe64dcc | 498 | if (devnull != i) (void)dup2(devnull, i); |
059ec3d9 PH |
499 | } |
500 | } | |
1fe64dcc | 501 | if (devnull > 2) (void)close(devnull); |
059ec3d9 PH |
502 | } |
503 | ||
504 | ||
505 | ||
506 | ||
507 | /************************************************* | |
508 | * Close unwanted file descriptors for delivery * | |
509 | *************************************************/ | |
510 | ||
511 | /* This function is called from a new process that has been forked to deliver | |
512 | an incoming message, either directly, or using exec. | |
513 | ||
514 | We want any smtp input streams to be closed in this new process. However, it | |
515 | has been observed that using fclose() here causes trouble. When reading in -bS | |
516 | input, duplicate copies of messages have been seen. The files will be sharing a | |
517 | file pointer with the parent process, and it seems that fclose() (at least on | |
518 | some systems - I saw this on Solaris 2.5.1) messes with that file pointer, at | |
519 | least sometimes. Hence we go for closing the underlying file descriptors. | |
520 | ||
521 | If TLS is active, we want to shut down the TLS library, but without molesting | |
522 | the parent's SSL connection. | |
523 | ||
524 | For delivery of a non-SMTP message, we want to close stdin and stdout (and | |
525 | stderr unless debugging) because the calling process might have set them up as | |
526 | pipes and be waiting for them to close before it waits for the submission | |
527 | process to terminate. If they aren't closed, they hold up the calling process | |
528 | until the initial delivery process finishes, which is not what we want. | |
529 | ||
530 | Exception: We do want it for synchronous delivery! | |
531 | ||
532 | And notwithstanding all the above, if D_resolver is set, implying resolver | |
533 | debugging, leave stdout open, because that's where the resolver writes its | |
534 | debugging output. | |
535 | ||
536 | When we close stderr (which implies we've also closed stdout), we also get rid | |
537 | of any controlling terminal. | |
538 | ||
539 | Arguments: None | |
540 | Returns: Nothing | |
541 | */ | |
542 | ||
543 | static void | |
544 | close_unwanted(void) | |
545 | { | |
546 | if (smtp_input) | |
547 | { | |
548 | #ifdef SUPPORT_TLS | |
a400eccf | 549 | tls_close(TRUE, FALSE); /* Shut down the TLS library */ |
059ec3d9 | 550 | #endif |
1fe64dcc PH |
551 | (void)close(fileno(smtp_in)); |
552 | (void)close(fileno(smtp_out)); | |
059ec3d9 PH |
553 | smtp_in = NULL; |
554 | } | |
555 | else | |
556 | { | |
1fe64dcc PH |
557 | (void)close(0); /* stdin */ |
558 | if ((debug_selector & D_resolver) == 0) (void)close(1); /* stdout */ | |
559 | if (debug_selector == 0) /* stderr */ | |
059ec3d9 PH |
560 | { |
561 | if (!synchronous_delivery) | |
562 | { | |
1fe64dcc | 563 | (void)close(2); |
059ec3d9 PH |
564 | log_stderr = NULL; |
565 | } | |
566 | (void)setsid(); | |
567 | } | |
568 | } | |
569 | } | |
570 | ||
571 | ||
572 | ||
573 | ||
574 | /************************************************* | |
575 | * Set uid and gid * | |
576 | *************************************************/ | |
577 | ||
578 | /* This function sets a new uid and gid permanently, optionally calling | |
579 | initgroups() to set auxiliary groups. There are some special cases when running | |
580 | Exim in unprivileged modes. In these situations the effective uid will not be | |
581 | root; if we already have the right effective uid/gid, and don't need to | |
582 | initialize any groups, leave things as they are. | |
583 | ||
584 | Arguments: | |
585 | uid the uid | |
586 | gid the gid | |
587 | igflag TRUE if initgroups() wanted | |
588 | msg text to use in debugging output and failure log | |
589 | ||
590 | Returns: nothing; bombs out on failure | |
591 | */ | |
592 | ||
593 | void | |
594 | exim_setugid(uid_t uid, gid_t gid, BOOL igflag, uschar *msg) | |
595 | { | |
596 | uid_t euid = geteuid(); | |
597 | gid_t egid = getegid(); | |
598 | ||
599 | if (euid == root_uid || euid != uid || egid != gid || igflag) | |
600 | { | |
601 | /* At least one OS returns +1 for initgroups failure, so just check for | |
602 | non-zero. */ | |
603 | ||
604 | if (igflag) | |
605 | { | |
606 | struct passwd *pw = getpwuid(uid); | |
607 | if (pw != NULL) | |
608 | { | |
609 | if (initgroups(pw->pw_name, gid) != 0) | |
610 | log_write(0,LOG_MAIN|LOG_PANIC_DIE,"initgroups failed for uid=%ld: %s", | |
611 | (long int)uid, strerror(errno)); | |
612 | } | |
613 | else log_write(0, LOG_MAIN|LOG_PANIC_DIE, "cannot run initgroups(): " | |
614 | "no passwd entry for uid=%ld", (long int)uid); | |
615 | } | |
616 | ||
617 | if (setgid(gid) < 0 || setuid(uid) < 0) | |
618 | { | |
619 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "unable to set gid=%ld or uid=%ld " | |
620 | "(euid=%ld): %s", (long int)gid, (long int)uid, (long int)euid, msg); | |
621 | } | |
622 | } | |
623 | ||
624 | /* Debugging output included uid/gid and all groups */ | |
625 | ||
626 | DEBUG(D_uid) | |
627 | { | |
cd59ab18 | 628 | int group_count, save_errno; |
059ec3d9 PH |
629 | gid_t group_list[NGROUPS_MAX]; |
630 | debug_printf("changed uid/gid: %s\n uid=%ld gid=%ld pid=%ld\n", msg, | |
631 | (long int)geteuid(), (long int)getegid(), (long int)getpid()); | |
632 | group_count = getgroups(NGROUPS_MAX, group_list); | |
cd59ab18 | 633 | save_errno = errno; |
059ec3d9 PH |
634 | debug_printf(" auxiliary group list:"); |
635 | if (group_count > 0) | |
636 | { | |
637 | int i; | |
638 | for (i = 0; i < group_count; i++) debug_printf(" %d", (int)group_list[i]); | |
639 | } | |
cd59ab18 PP |
640 | else if (group_count < 0) |
641 | debug_printf(" <error: %s>", strerror(save_errno)); | |
059ec3d9 PH |
642 | else debug_printf(" <none>"); |
643 | debug_printf("\n"); | |
644 | } | |
645 | } | |
646 | ||
647 | ||
648 | ||
649 | ||
650 | /************************************************* | |
651 | * Exit point * | |
652 | *************************************************/ | |
653 | ||
654 | /* Exim exits via this function so that it always clears up any open | |
655 | databases. | |
656 | ||
657 | Arguments: | |
658 | rc return code | |
659 | ||
660 | Returns: does not return | |
661 | */ | |
662 | ||
663 | void | |
664 | exim_exit(int rc) | |
665 | { | |
666 | search_tidyup(); | |
667 | DEBUG(D_any) | |
668 | debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d terminating with rc=%d " | |
669 | ">>>>>>>>>>>>>>>>\n", (int)getpid(), rc); | |
670 | exit(rc); | |
671 | } | |
672 | ||
673 | ||
674 | ||
675 | ||
676 | /************************************************* | |
677 | * Extract port from host address * | |
678 | *************************************************/ | |
679 | ||
680 | /* Called to extract the port from the values given to -oMa and -oMi. | |
b90c388a PH |
681 | It also checks the syntax of the address, and terminates it before the |
682 | port data when a port is extracted. | |
059ec3d9 PH |
683 | |
684 | Argument: | |
685 | address the address, with possible port on the end | |
686 | ||
687 | Returns: the port, or zero if there isn't one | |
688 | bombs out on a syntax error | |
689 | */ | |
690 | ||
691 | static int | |
692 | check_port(uschar *address) | |
693 | { | |
7cd1141b | 694 | int port = host_address_extract_port(address); |
8e669ac1 | 695 | if (string_is_ip_address(address, NULL) == 0) |
059ec3d9 PH |
696 | { |
697 | fprintf(stderr, "exim abandoned: \"%s\" is not an IP address\n", address); | |
698 | exit(EXIT_FAILURE); | |
699 | } | |
700 | return port; | |
701 | } | |
702 | ||
703 | ||
704 | ||
705 | /************************************************* | |
706 | * Test/verify an address * | |
707 | *************************************************/ | |
708 | ||
709 | /* This function is called by the -bv and -bt code. It extracts a working | |
710 | address from a full RFC 822 address. This isn't really necessary per se, but it | |
711 | has the effect of collapsing source routes. | |
712 | ||
713 | Arguments: | |
714 | s the address string | |
715 | flags flag bits for verify_address() | |
716 | exit_value to be set for failures | |
717 | ||
a5a28604 | 718 | Returns: nothing |
059ec3d9 PH |
719 | */ |
720 | ||
721 | static void | |
722 | test_address(uschar *s, int flags, int *exit_value) | |
723 | { | |
724 | int start, end, domain; | |
725 | uschar *parse_error = NULL; | |
726 | uschar *address = parse_extract_address(s, &parse_error, &start, &end, &domain, | |
727 | FALSE); | |
728 | if (address == NULL) | |
729 | { | |
730 | fprintf(stdout, "syntax error: %s\n", parse_error); | |
731 | *exit_value = 2; | |
732 | } | |
733 | else | |
734 | { | |
735 | int rc = verify_address(deliver_make_addr(address,TRUE), stdout, flags, -1, | |
4deaf07d | 736 | -1, -1, NULL, NULL, NULL); |
059ec3d9 PH |
737 | if (rc == FAIL) *exit_value = 2; |
738 | else if (rc == DEFER && *exit_value == 0) *exit_value = 1; | |
739 | } | |
740 | } | |
741 | ||
742 | ||
743 | ||
059ec3d9 PH |
744 | /************************************************* |
745 | * Show supported features * | |
746 | *************************************************/ | |
747 | ||
4b2241d2 PP |
748 | /* This function is called for -bV/--version and for -d to output the optional |
749 | features of the current Exim binary. | |
059ec3d9 PH |
750 | |
751 | Arguments: a FILE for printing | |
752 | Returns: nothing | |
753 | */ | |
754 | ||
755 | static void | |
756 | show_whats_supported(FILE *f) | |
757 | { | |
44bbabb5 PP |
758 | auth_info *authi; |
759 | ||
059ec3d9 PH |
760 | #ifdef DB_VERSION_STRING |
761 | fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING); | |
762 | #elif defined(BTREEVERSION) && defined(HASHVERSION) | |
763 | #ifdef USE_DB | |
764 | fprintf(f, "Probably Berkeley DB version 1.8x (native mode)\n"); | |
765 | #else | |
766 | fprintf(f, "Probably Berkeley DB version 1.8x (compatibility mode)\n"); | |
767 | #endif | |
768 | #elif defined(_DBM_RDONLY) || defined(dbm_dirfno) | |
769 | fprintf(f, "Probably ndbm\n"); | |
770 | #elif defined(USE_TDB) | |
771 | fprintf(f, "Using tdb\n"); | |
772 | #else | |
773 | #ifdef USE_GDBM | |
774 | fprintf(f, "Probably GDBM (native mode)\n"); | |
775 | #else | |
776 | fprintf(f, "Probably GDBM (compatibility mode)\n"); | |
777 | #endif | |
778 | #endif | |
779 | ||
780 | fprintf(f, "Support for:"); | |
9cec981f PH |
781 | #ifdef SUPPORT_CRYPTEQ |
782 | fprintf(f, " crypteq"); | |
783 | #endif | |
059ec3d9 PH |
784 | #if HAVE_ICONV |
785 | fprintf(f, " iconv()"); | |
786 | #endif | |
787 | #if HAVE_IPV6 | |
788 | fprintf(f, " IPv6"); | |
789 | #endif | |
79378e0f PH |
790 | #ifdef HAVE_SETCLASSRESOURCES |
791 | fprintf(f, " use_setclassresources"); | |
929ba01c | 792 | #endif |
059ec3d9 PH |
793 | #ifdef SUPPORT_PAM |
794 | fprintf(f, " PAM"); | |
795 | #endif | |
796 | #ifdef EXIM_PERL | |
797 | fprintf(f, " Perl"); | |
798 | #endif | |
1a46a8c5 PH |
799 | #ifdef EXPAND_DLFUNC |
800 | fprintf(f, " Expand_dlfunc"); | |
801 | #endif | |
059ec3d9 PH |
802 | #ifdef USE_TCP_WRAPPERS |
803 | fprintf(f, " TCPwrappers"); | |
804 | #endif | |
805 | #ifdef SUPPORT_TLS | |
806 | #ifdef USE_GNUTLS | |
807 | fprintf(f, " GnuTLS"); | |
808 | #else | |
809 | fprintf(f, " OpenSSL"); | |
810 | #endif | |
811 | #endif | |
b2f5a032 PH |
812 | #ifdef SUPPORT_TRANSLATE_IP_ADDRESS |
813 | fprintf(f, " translate_ip_address"); | |
814 | #endif | |
f174f16e PH |
815 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
816 | fprintf(f, " move_frozen_messages"); | |
817 | #endif | |
8523533c TK |
818 | #ifdef WITH_CONTENT_SCAN |
819 | fprintf(f, " Content_Scanning"); | |
820 | #endif | |
74f150bf JH |
821 | #ifndef DISABLE_DKIM |
822 | fprintf(f, " DKIM"); | |
823 | #endif | |
ef1bbb27 HSHR |
824 | #ifndef DISABLE_DNSSEC |
825 | fprintf(f, " DNSSEC"); | |
826 | #endif | |
0cbf2b82 JH |
827 | #ifndef DISABLE_EVENT |
828 | fprintf(f, " Event"); | |
829 | #endif | |
8c5d388a JH |
830 | #ifdef SUPPORT_I18N |
831 | fprintf(f, " I18N"); | |
832 | #endif | |
74f150bf JH |
833 | #ifndef DISABLE_OCSP |
834 | fprintf(f, " OCSP"); | |
835 | #endif | |
4d832da1 TL |
836 | #ifndef DISABLE_PRDR |
837 | fprintf(f, " PRDR"); | |
838 | #endif | |
cee5f132 JH |
839 | #ifdef SUPPORT_PROXY |
840 | fprintf(f, " PROXY"); | |
841 | #endif | |
f0989ec0 | 842 | #ifdef SUPPORT_SOCKS |
74f150bf | 843 | fprintf(f, " SOCKS"); |
f2de3a33 | 844 | #endif |
8523533c TK |
845 | #ifdef EXPERIMENTAL_SPF |
846 | fprintf(f, " Experimental_SPF"); | |
847 | #endif | |
848 | #ifdef EXPERIMENTAL_SRS | |
849 | fprintf(f, " Experimental_SRS"); | |
850 | #endif | |
851 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
852 | fprintf(f, " Experimental_Brightmail"); | |
853 | #endif | |
043b1248 JH |
854 | #ifdef EXPERIMENTAL_DANE |
855 | fprintf(f, " Experimental_DANE"); | |
856 | #endif | |
6a8f9482 TK |
857 | #ifdef EXPERIMENTAL_DCC |
858 | fprintf(f, " Experimental_DCC"); | |
859 | #endif | |
4840604e TL |
860 | #ifdef EXPERIMENTAL_DMARC |
861 | fprintf(f, " Experimental_DMARC"); | |
862 | #endif | |
895fbaf2 JH |
863 | #ifdef EXPERIMENTAL_DSN_INFO |
864 | fprintf(f, " Experimental_DSN_info"); | |
865 | #endif | |
059ec3d9 PH |
866 | fprintf(f, "\n"); |
867 | ||
e6d225ae DW |
868 | fprintf(f, "Lookups (built-in):"); |
869 | #if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2 | |
059ec3d9 PH |
870 | fprintf(f, " lsearch wildlsearch nwildlsearch iplsearch"); |
871 | #endif | |
e6d225ae | 872 | #if defined(LOOKUP_CDB) && LOOKUP_CDB!=2 |
059ec3d9 PH |
873 | fprintf(f, " cdb"); |
874 | #endif | |
e6d225ae | 875 | #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2 |
4a6a987a | 876 | fprintf(f, " dbm dbmjz dbmnz"); |
059ec3d9 | 877 | #endif |
e6d225ae | 878 | #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2 |
059ec3d9 PH |
879 | fprintf(f, " dnsdb"); |
880 | #endif | |
e6d225ae | 881 | #if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2 |
059ec3d9 PH |
882 | fprintf(f, " dsearch"); |
883 | #endif | |
e6d225ae | 884 | #if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2 |
059ec3d9 PH |
885 | fprintf(f, " ibase"); |
886 | #endif | |
e6d225ae | 887 | #if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2 |
059ec3d9 PH |
888 | fprintf(f, " ldap ldapdn ldapm"); |
889 | #endif | |
e6d225ae | 890 | #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2 |
059ec3d9 PH |
891 | fprintf(f, " mysql"); |
892 | #endif | |
e6d225ae | 893 | #if defined(LOOKUP_NIS) && LOOKUP_NIS!=2 |
059ec3d9 PH |
894 | fprintf(f, " nis nis0"); |
895 | #endif | |
e6d225ae | 896 | #if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2 |
059ec3d9 PH |
897 | fprintf(f, " nisplus"); |
898 | #endif | |
e6d225ae | 899 | #if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2 |
059ec3d9 PH |
900 | fprintf(f, " oracle"); |
901 | #endif | |
e6d225ae | 902 | #if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2 |
059ec3d9 PH |
903 | fprintf(f, " passwd"); |
904 | #endif | |
e6d225ae | 905 | #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2 |
059ec3d9 PH |
906 | fprintf(f, " pgsql"); |
907 | #endif | |
de78e2d5 JH |
908 | #if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2 |
909 | fprintf(f, " redis"); | |
910 | #endif | |
e6d225ae | 911 | #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2 |
13b685f9 PH |
912 | fprintf(f, " sqlite"); |
913 | #endif | |
e6d225ae | 914 | #if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2 |
059ec3d9 PH |
915 | fprintf(f, " testdb"); |
916 | #endif | |
e6d225ae | 917 | #if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2 |
059ec3d9 PH |
918 | fprintf(f, " whoson"); |
919 | #endif | |
920 | fprintf(f, "\n"); | |
921 | ||
922 | fprintf(f, "Authenticators:"); | |
923 | #ifdef AUTH_CRAM_MD5 | |
924 | fprintf(f, " cram_md5"); | |
925 | #endif | |
926 | #ifdef AUTH_CYRUS_SASL | |
927 | fprintf(f, " cyrus_sasl"); | |
928 | #endif | |
14aa5a05 PH |
929 | #ifdef AUTH_DOVECOT |
930 | fprintf(f, " dovecot"); | |
931 | #endif | |
44bbabb5 PP |
932 | #ifdef AUTH_GSASL |
933 | fprintf(f, " gsasl"); | |
934 | #endif | |
dde3daac PP |
935 | #ifdef AUTH_HEIMDAL_GSSAPI |
936 | fprintf(f, " heimdal_gssapi"); | |
937 | #endif | |
059ec3d9 PH |
938 | #ifdef AUTH_PLAINTEXT |
939 | fprintf(f, " plaintext"); | |
940 | #endif | |
941 | #ifdef AUTH_SPA | |
942 | fprintf(f, " spa"); | |
943 | #endif | |
b3ef41c9 JH |
944 | #ifdef AUTH_TLS |
945 | fprintf(f, " tls"); | |
946 | #endif | |
059ec3d9 PH |
947 | fprintf(f, "\n"); |
948 | ||
949 | fprintf(f, "Routers:"); | |
950 | #ifdef ROUTER_ACCEPT | |
951 | fprintf(f, " accept"); | |
952 | #endif | |
953 | #ifdef ROUTER_DNSLOOKUP | |
954 | fprintf(f, " dnslookup"); | |
955 | #endif | |
956 | #ifdef ROUTER_IPLITERAL | |
957 | fprintf(f, " ipliteral"); | |
958 | #endif | |
959 | #ifdef ROUTER_IPLOOKUP | |
960 | fprintf(f, " iplookup"); | |
961 | #endif | |
962 | #ifdef ROUTER_MANUALROUTE | |
963 | fprintf(f, " manualroute"); | |
964 | #endif | |
965 | #ifdef ROUTER_QUERYPROGRAM | |
966 | fprintf(f, " queryprogram"); | |
967 | #endif | |
968 | #ifdef ROUTER_REDIRECT | |
969 | fprintf(f, " redirect"); | |
970 | #endif | |
971 | fprintf(f, "\n"); | |
972 | ||
973 | fprintf(f, "Transports:"); | |
974 | #ifdef TRANSPORT_APPENDFILE | |
975 | fprintf(f, " appendfile"); | |
976 | #ifdef SUPPORT_MAILDIR | |
977 | fprintf(f, "/maildir"); | |
978 | #endif | |
979 | #ifdef SUPPORT_MAILSTORE | |
980 | fprintf(f, "/mailstore"); | |
981 | #endif | |
982 | #ifdef SUPPORT_MBX | |
983 | fprintf(f, "/mbx"); | |
984 | #endif | |
985 | #endif | |
986 | #ifdef TRANSPORT_AUTOREPLY | |
987 | fprintf(f, " autoreply"); | |
988 | #endif | |
989 | #ifdef TRANSPORT_LMTP | |
990 | fprintf(f, " lmtp"); | |
991 | #endif | |
992 | #ifdef TRANSPORT_PIPE | |
993 | fprintf(f, " pipe"); | |
994 | #endif | |
995 | #ifdef TRANSPORT_SMTP | |
996 | fprintf(f, " smtp"); | |
997 | #endif | |
998 | fprintf(f, "\n"); | |
999 | ||
1000 | if (fixed_never_users[0] > 0) | |
1001 | { | |
1002 | int i; | |
1003 | fprintf(f, "Fixed never_users: "); | |
1004 | for (i = 1; i <= (int)fixed_never_users[0] - 1; i++) | |
1005 | fprintf(f, "%d:", (unsigned int)fixed_never_users[i]); | |
1006 | fprintf(f, "%d\n", (unsigned int)fixed_never_users[i]); | |
1007 | } | |
21c28500 | 1008 | |
73a46702 | 1009 | fprintf(f, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t)); |
36f12725 | 1010 | |
6545de78 PP |
1011 | /* Everything else is details which are only worth reporting when debugging. |
1012 | Perhaps the tls_version_report should move into this too. */ | |
1013 | DEBUG(D_any) do { | |
1014 | ||
1015 | int i; | |
1016 | ||
b3c261f7 PP |
1017 | /* clang defines __GNUC__ (at least, for me) so test for it first */ |
1018 | #if defined(__clang__) | |
1019 | fprintf(f, "Compiler: CLang [%s]\n", __clang_version__); | |
1020 | #elif defined(__GNUC__) | |
1021 | fprintf(f, "Compiler: GCC [%s]\n", | |
1022 | # ifdef __VERSION__ | |
1023 | __VERSION__ | |
1024 | # else | |
1025 | "? unknown version ?" | |
1026 | # endif | |
1027 | ); | |
1028 | #else | |
1029 | fprintf(f, "Compiler: <unknown>\n"); | |
1030 | #endif | |
1031 | ||
01f3091a JH |
1032 | #ifdef __GLIBC__ |
1033 | fprintf(f, "Library version: Glibc: Compile: %d.%d\n", | |
1034 | __GLIBC__, __GLIBC_MINOR__); | |
1035 | if (__GLIBC_PREREQ(2, 1)) | |
1036 | fprintf(f, " Runtime: %s\n", | |
1037 | gnu_get_libc_version()); | |
1038 | #endif | |
1039 | ||
754a0503 PP |
1040 | #ifdef SUPPORT_TLS |
1041 | tls_version_report(f); | |
1042 | #endif | |
8c5d388a | 1043 | #ifdef SUPPORT_I18N |
b04be5e7 JH |
1044 | utf8_version_report(f); |
1045 | #endif | |
754a0503 | 1046 | |
fc362fc5 JH |
1047 | for (authi = auths_available; *authi->driver_name != '\0'; ++authi) |
1048 | if (authi->version_report) | |
44bbabb5 | 1049 | (*authi->version_report)(f); |
6545de78 | 1050 | |
decd95cb | 1051 | /* PCRE_PRERELEASE is either defined and empty or a bare sequence of |
6475bd82 PP |
1052 | characters; unless it's an ancient version of PCRE in which case it |
1053 | is not defined. */ | |
1054 | #ifndef PCRE_PRERELEASE | |
01f3091a | 1055 | # define PCRE_PRERELEASE |
6475bd82 PP |
1056 | #endif |
1057 | #define QUOTE(X) #X | |
1058 | #define EXPAND_AND_QUOTE(X) QUOTE(X) | |
6545de78 PP |
1059 | fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n" |
1060 | " Runtime: %s\n", | |
1061 | PCRE_MAJOR, PCRE_MINOR, | |
6475bd82 | 1062 | EXPAND_AND_QUOTE(PCRE_PRERELEASE) "", |
6545de78 | 1063 | pcre_version()); |
6475bd82 PP |
1064 | #undef QUOTE |
1065 | #undef EXPAND_AND_QUOTE | |
6545de78 PP |
1066 | |
1067 | init_lookup_list(); | |
1068 | for (i = 0; i < lookup_list_count; i++) | |
6545de78 PP |
1069 | if (lookup_list[i]->version_report) |
1070 | lookup_list[i]->version_report(f); | |
6545de78 | 1071 | |
b70d2586 PP |
1072 | #ifdef WHITELIST_D_MACROS |
1073 | fprintf(f, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS); | |
1074 | #else | |
1075 | fprintf(f, "WHITELIST_D_MACROS unset\n"); | |
1076 | #endif | |
1077 | #ifdef TRUSTED_CONFIG_LIST | |
1078 | fprintf(f, "TRUSTED_CONFIG_LIST: \"%s\"\n", TRUSTED_CONFIG_LIST); | |
1079 | #else | |
1080 | fprintf(f, "TRUSTED_CONFIG_LIST unset\n"); | |
1081 | #endif | |
1082 | ||
6545de78 | 1083 | } while (0); |
059ec3d9 PH |
1084 | } |
1085 | ||
1086 | ||
98a90c36 PP |
1087 | /************************************************* |
1088 | * Show auxiliary information about Exim * | |
1089 | *************************************************/ | |
1090 | ||
1091 | static void | |
1092 | show_exim_information(enum commandline_info request, FILE *stream) | |
1093 | { | |
1094 | const uschar **pp; | |
1095 | ||
1096 | switch(request) | |
1097 | { | |
1098 | case CMDINFO_NONE: | |
1099 | fprintf(stream, "Oops, something went wrong.\n"); | |
1100 | return; | |
1101 | case CMDINFO_HELP: | |
1102 | fprintf(stream, | |
1103 | "The -bI: flag takes a string indicating which information to provide.\n" | |
1104 | "If the string is not recognised, you'll get this help (on stderr).\n" | |
1105 | "\n" | |
1106 | " exim -bI:help this information\n" | |
36a3ae5f | 1107 | " exim -bI:dscp dscp value keywords known\n" |
98a90c36 PP |
1108 | " exim -bI:sieve list of supported sieve extensions, one per line.\n" |
1109 | ); | |
1110 | return; | |
1111 | case CMDINFO_SIEVE: | |
1112 | for (pp = exim_sieve_extension_list; *pp; ++pp) | |
1113 | fprintf(stream, "%s\n", *pp); | |
1114 | return; | |
36a3ae5f PP |
1115 | case CMDINFO_DSCP: |
1116 | dscp_list_to_stream(stream); | |
1117 | return; | |
98a90c36 PP |
1118 | } |
1119 | } | |
059ec3d9 PH |
1120 | |
1121 | ||
1122 | /************************************************* | |
1123 | * Quote a local part * | |
1124 | *************************************************/ | |
1125 | ||
1126 | /* This function is used when a sender address or a From: or Sender: header | |
1127 | line is being created from the caller's login, or from an authenticated_id. It | |
1128 | applies appropriate quoting rules for a local part. | |
1129 | ||
1130 | Argument: the local part | |
1131 | Returns: the local part, quoted if necessary | |
1132 | */ | |
1133 | ||
1134 | uschar * | |
1135 | local_part_quote(uschar *lpart) | |
1136 | { | |
1137 | BOOL needs_quote = FALSE; | |
1138 | int size, ptr; | |
1139 | uschar *yield; | |
1140 | uschar *t; | |
1141 | ||
1142 | for (t = lpart; !needs_quote && *t != 0; t++) | |
1143 | { | |
1144 | needs_quote = !isalnum(*t) && strchr("!#$%&'*+-/=?^_`{|}~", *t) == NULL && | |
1145 | (*t != '.' || t == lpart || t[1] == 0); | |
1146 | } | |
1147 | ||
1148 | if (!needs_quote) return lpart; | |
1149 | ||
1150 | size = ptr = 0; | |
c2f669a4 | 1151 | yield = string_catn(NULL, &size, &ptr, US"\"", 1); |
059ec3d9 PH |
1152 | |
1153 | for (;;) | |
1154 | { | |
1155 | uschar *nq = US Ustrpbrk(lpart, "\\\""); | |
1156 | if (nq == NULL) | |
1157 | { | |
c2f669a4 | 1158 | yield = string_cat(yield, &size, &ptr, lpart); |
059ec3d9 PH |
1159 | break; |
1160 | } | |
c2f669a4 JH |
1161 | yield = string_catn(yield, &size, &ptr, lpart, nq - lpart); |
1162 | yield = string_catn(yield, &size, &ptr, US"\\", 1); | |
1163 | yield = string_catn(yield, &size, &ptr, nq, 1); | |
059ec3d9 PH |
1164 | lpart = nq + 1; |
1165 | } | |
1166 | ||
c2f669a4 | 1167 | yield = string_catn(yield, &size, &ptr, US"\"", 1); |
059ec3d9 PH |
1168 | yield[ptr] = 0; |
1169 | return yield; | |
1170 | } | |
1171 | ||
1172 | ||
1173 | ||
1174 | #ifdef USE_READLINE | |
1175 | /************************************************* | |
1176 | * Load readline() functions * | |
1177 | *************************************************/ | |
1178 | ||
1179 | /* This function is called from testing executions that read data from stdin, | |
1180 | but only when running as the calling user. Currently, only -be does this. The | |
1181 | function loads the readline() function library and passes back the functions. | |
1182 | On some systems, it needs the curses library, so load that too, but try without | |
1183 | it if loading fails. All this functionality has to be requested at build time. | |
1184 | ||
1185 | Arguments: | |
1186 | fn_readline_ptr pointer to where to put the readline pointer | |
1187 | fn_addhist_ptr pointer to where to put the addhistory function | |
1188 | ||
1189 | Returns: the dlopen handle or NULL on failure | |
1190 | */ | |
1191 | ||
1192 | static void * | |
1ba28e2b PP |
1193 | set_readline(char * (**fn_readline_ptr)(const char *), |
1194 | void (**fn_addhist_ptr)(const char *)) | |
059ec3d9 PH |
1195 | { |
1196 | void *dlhandle; | |
e12f8c32 | 1197 | void *dlhandle_curses = dlopen("libcurses." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_LAZY); |
059ec3d9 | 1198 | |
e12f8c32 | 1199 | dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW); |
059ec3d9 PH |
1200 | if (dlhandle_curses != NULL) dlclose(dlhandle_curses); |
1201 | ||
1202 | if (dlhandle != NULL) | |
1203 | { | |
1ba28e2b PP |
1204 | /* Checked manual pages; at least in GNU Readline 6.1, the prototypes are: |
1205 | * char * readline (const char *prompt); | |
1206 | * void add_history (const char *string); | |
1207 | */ | |
1208 | *fn_readline_ptr = (char *(*)(const char*))dlsym(dlhandle, "readline"); | |
1209 | *fn_addhist_ptr = (void(*)(const char*))dlsym(dlhandle, "add_history"); | |
059ec3d9 PH |
1210 | } |
1211 | else | |
1212 | { | |
1213 | DEBUG(D_any) debug_printf("failed to load readline: %s\n", dlerror()); | |
1214 | } | |
1215 | ||
1216 | return dlhandle; | |
1217 | } | |
1218 | #endif | |
1219 | ||
1220 | ||
1221 | ||
1222 | /************************************************* | |
1223 | * Get a line from stdin for testing things * | |
1224 | *************************************************/ | |
1225 | ||
1226 | /* This function is called when running tests that can take a number of lines | |
1227 | of input (for example, -be and -bt). It handles continuations and trailing | |
1228 | spaces. And prompting and a blank line output on eof. If readline() is in use, | |
1229 | the arguments are non-NULL and provide the relevant functions. | |
1230 | ||
1231 | Arguments: | |
1232 | fn_readline readline function or NULL | |
1233 | fn_addhist addhist function or NULL | |
1234 | ||
1235 | Returns: pointer to dynamic memory, or NULL at end of file | |
1236 | */ | |
1237 | ||
1238 | static uschar * | |
1ba28e2b | 1239 | get_stdinput(char *(*fn_readline)(const char *), void(*fn_addhist)(const char *)) |
059ec3d9 PH |
1240 | { |
1241 | int i; | |
1242 | int size = 0; | |
1243 | int ptr = 0; | |
1244 | uschar *yield = NULL; | |
1245 | ||
328895cc | 1246 | if (fn_readline == NULL) { printf("> "); fflush(stdout); } |
059ec3d9 PH |
1247 | |
1248 | for (i = 0;; i++) | |
1249 | { | |
1250 | uschar buffer[1024]; | |
1251 | uschar *p, *ss; | |
1252 | ||
1253 | #ifdef USE_READLINE | |
1254 | char *readline_line = NULL; | |
1255 | if (fn_readline != NULL) | |
1256 | { | |
1257 | if ((readline_line = fn_readline((i > 0)? "":"> ")) == NULL) break; | |
1258 | if (*readline_line != 0 && fn_addhist != NULL) fn_addhist(readline_line); | |
1259 | p = US readline_line; | |
1260 | } | |
1261 | else | |
1262 | #endif | |
1263 | ||
1264 | /* readline() not in use */ | |
1265 | ||
1266 | { | |
1267 | if (Ufgets(buffer, sizeof(buffer), stdin) == NULL) break; | |
1268 | p = buffer; | |
1269 | } | |
1270 | ||
1271 | /* Handle the line */ | |
1272 | ||
1273 | ss = p + (int)Ustrlen(p); | |
1274 | while (ss > p && isspace(ss[-1])) ss--; | |
1275 | ||
1276 | if (i > 0) | |
1277 | { | |
1278 | while (p < ss && isspace(*p)) p++; /* leading space after cont */ | |
1279 | } | |
1280 | ||
c2f669a4 | 1281 | yield = string_catn(yield, &size, &ptr, p, ss - p); |
059ec3d9 PH |
1282 | |
1283 | #ifdef USE_READLINE | |
1284 | if (fn_readline != NULL) free(readline_line); | |
1285 | #endif | |
1286 | ||
5f5be492 | 1287 | /* yield can only be NULL if ss==p */ |
059ec3d9 PH |
1288 | if (ss == p || yield[ptr-1] != '\\') |
1289 | { | |
5f5be492 | 1290 | if (yield) yield[ptr] = 0; |
059ec3d9 PH |
1291 | break; |
1292 | } | |
1293 | yield[--ptr] = 0; | |
1294 | } | |
1295 | ||
1296 | if (yield == NULL) printf("\n"); | |
1297 | return yield; | |
1298 | } | |
1299 | ||
1300 | ||
1301 | ||
81ea09ca NM |
1302 | /************************************************* |
1303 | * Output usage information for the program * | |
1304 | *************************************************/ | |
1305 | ||
1306 | /* This function is called when there are no recipients | |
1307 | or a specific --help argument was added. | |
1308 | ||
1309 | Arguments: | |
1310 | progname information on what name we were called by | |
1311 | ||
1312 | Returns: DOES NOT RETURN | |
1313 | */ | |
1314 | ||
1315 | static void | |
1316 | exim_usage(uschar *progname) | |
1317 | { | |
1318 | ||
1319 | /* Handle specific program invocation varients */ | |
1320 | if (Ustrcmp(progname, US"-mailq") == 0) | |
1321 | { | |
1322 | fprintf(stderr, | |
e765a0f1 | 1323 | "mailq - list the contents of the mail queue\n\n" |
81ea09ca NM |
1324 | "For a list of options, see the Exim documentation.\n"); |
1325 | exit(EXIT_FAILURE); | |
1326 | } | |
1327 | ||
1328 | /* Generic usage - we output this whatever happens */ | |
1329 | fprintf(stderr, | |
1330 | "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n" | |
1331 | "not directly from a shell command line. Options and/or arguments control\n" | |
1332 | "what it does when called. For a list of options, see the Exim documentation.\n"); | |
1333 | ||
1334 | exit(EXIT_FAILURE); | |
1335 | } | |
1336 | ||
1337 | ||
1338 | ||
a7cbbf50 PP |
1339 | /************************************************* |
1340 | * Validate that the macros given are okay * | |
1341 | *************************************************/ | |
1342 | ||
1343 | /* Typically, Exim will drop privileges if macros are supplied. In some | |
1344 | cases, we want to not do so. | |
1345 | ||
1346 | Arguments: none (macros is a global) | |
1347 | Returns: true if trusted, false otherwise | |
1348 | */ | |
1349 | ||
1350 | static BOOL | |
1351 | macros_trusted(void) | |
1352 | { | |
1353 | #ifdef WHITELIST_D_MACROS | |
1354 | macro_item *m; | |
1355 | uschar *whitelisted, *end, *p, **whites, **w; | |
1356 | int white_count, i, n; | |
1357 | size_t len; | |
1358 | BOOL prev_char_item, found; | |
1359 | #endif | |
1360 | ||
1361 | if (macros == NULL) | |
1362 | return TRUE; | |
1363 | #ifndef WHITELIST_D_MACROS | |
1364 | return FALSE; | |
1365 | #else | |
1366 | ||
66581d1e PP |
1367 | /* We only trust -D overrides for some invoking users: |
1368 | root, the exim run-time user, the optional config owner user. | |
1369 | I don't know why config-owner would be needed, but since they can own the | |
1370 | config files anyway, there's no security risk to letting them override -D. */ | |
1371 | if ( ! ((real_uid == root_uid) | |
1372 | || (real_uid == exim_uid) | |
1373 | #ifdef CONFIGURE_OWNER | |
1374 | || (real_uid == config_uid) | |
1375 | #endif | |
1376 | )) | |
1377 | { | |
1378 | debug_printf("macros_trusted rejecting macros for uid %d\n", (int) real_uid); | |
1379 | return FALSE; | |
1380 | } | |
1381 | ||
a7cbbf50 PP |
1382 | /* Get a list of macros which are whitelisted */ |
1383 | whitelisted = string_copy_malloc(US WHITELIST_D_MACROS); | |
1384 | prev_char_item = FALSE; | |
1385 | white_count = 0; | |
1386 | for (p = whitelisted; *p != '\0'; ++p) | |
1387 | { | |
1388 | if (*p == ':' || isspace(*p)) | |
1389 | { | |
1390 | *p = '\0'; | |
1391 | if (prev_char_item) | |
1392 | ++white_count; | |
1393 | prev_char_item = FALSE; | |
1394 | continue; | |
1395 | } | |
1396 | if (!prev_char_item) | |
1397 | prev_char_item = TRUE; | |
1398 | } | |
1399 | end = p; | |
1400 | if (prev_char_item) | |
1401 | ++white_count; | |
1402 | if (!white_count) | |
1403 | return FALSE; | |
1404 | whites = store_malloc(sizeof(uschar *) * (white_count+1)); | |
1405 | for (p = whitelisted, i = 0; (p != end) && (i < white_count); ++p) | |
1406 | { | |
1407 | if (*p != '\0') | |
1408 | { | |
1409 | whites[i++] = p; | |
1410 | if (i == white_count) | |
1411 | break; | |
1412 | while (*p != '\0' && p < end) | |
1413 | ++p; | |
1414 | } | |
1415 | } | |
1416 | whites[i] = NULL; | |
1417 | ||
1418 | /* The list of macros should be very short. Accept the N*M complexity. */ | |
1419 | for (m = macros; m != NULL; m = m->next) | |
1420 | { | |
1421 | found = FALSE; | |
1422 | for (w = whites; *w; ++w) | |
1423 | if (Ustrcmp(*w, m->name) == 0) | |
1424 | { | |
1425 | found = TRUE; | |
1426 | break; | |
1427 | } | |
1428 | if (!found) | |
1429 | return FALSE; | |
1430 | if (m->replacement == NULL) | |
1431 | continue; | |
1432 | len = Ustrlen(m->replacement); | |
1433 | if (len == 0) | |
1434 | continue; | |
1435 | n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len, | |
1436 | 0, PCRE_EOPT, NULL, 0); | |
1437 | if (n < 0) | |
1438 | { | |
1439 | if (n != PCRE_ERROR_NOMATCH) | |
1440 | debug_printf("macros_trusted checking %s returned %d\n", m->name, n); | |
1441 | return FALSE; | |
1442 | } | |
1443 | } | |
43236f35 | 1444 | DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n"); |
a7cbbf50 PP |
1445 | return TRUE; |
1446 | #endif | |
1447 | } | |
1448 | ||
1449 | ||
059ec3d9 PH |
1450 | /************************************************* |
1451 | * Entry point and high-level code * | |
1452 | *************************************************/ | |
1453 | ||
1454 | /* Entry point for the Exim mailer. Analyse the arguments and arrange to take | |
1455 | the appropriate action. All the necessary functions are present in the one | |
1456 | binary. I originally thought one should split it up, but it turns out that so | |
1457 | much of the apparatus is needed in each chunk that one might as well just have | |
1458 | it all available all the time, which then makes the coding easier as well. | |
1459 | ||
1460 | Arguments: | |
1461 | argc count of entries in argv | |
1462 | argv argument strings, with argv[0] being the program name | |
1463 | ||
1464 | Returns: EXIT_SUCCESS if terminated successfully | |
1465 | EXIT_FAILURE otherwise, except when a message has been sent | |
1466 | to the sender, and -oee was given | |
1467 | */ | |
1468 | ||
1469 | int | |
1470 | main(int argc, char **cargv) | |
1471 | { | |
1472 | uschar **argv = USS cargv; | |
1473 | int arg_receive_timeout = -1; | |
1474 | int arg_smtp_receive_timeout = -1; | |
1475 | int arg_error_handling = error_handling; | |
f05da2e8 PH |
1476 | int filter_sfd = -1; |
1477 | int filter_ufd = -1; | |
059ec3d9 | 1478 | int group_count; |
1670ef10 | 1479 | int i, rv; |
059ec3d9 PH |
1480 | int list_queue_option = 0; |
1481 | int msg_action = 0; | |
1482 | int msg_action_arg = -1; | |
1483 | int namelen = (argv[0] == NULL)? 0 : Ustrlen(argv[0]); | |
1484 | int queue_only_reason = 0; | |
1485 | #ifdef EXIM_PERL | |
1486 | int perl_start_option = 0; | |
1487 | #endif | |
1488 | int recipients_arg = argc; | |
1489 | int sender_address_domain = 0; | |
1490 | int test_retry_arg = -1; | |
1491 | int test_rewrite_arg = -1; | |
1492 | BOOL arg_queue_only = FALSE; | |
1493 | BOOL bi_option = FALSE; | |
1494 | BOOL checking = FALSE; | |
1495 | BOOL count_queue = FALSE; | |
1496 | BOOL expansion_test = FALSE; | |
1497 | BOOL extract_recipients = FALSE; | |
f4ee74ac | 1498 | BOOL flag_G = FALSE; |
12f69989 | 1499 | BOOL flag_n = FALSE; |
059ec3d9 PH |
1500 | BOOL forced_delivery = FALSE; |
1501 | BOOL f_end_dot = FALSE; | |
1502 | BOOL deliver_give_up = FALSE; | |
1503 | BOOL list_queue = FALSE; | |
1504 | BOOL list_options = FALSE; | |
bf3c2c6b | 1505 | BOOL list_config = FALSE; |
059ec3d9 PH |
1506 | BOOL local_queue_only; |
1507 | BOOL more = TRUE; | |
1508 | BOOL one_msg_action = FALSE; | |
1509 | BOOL queue_only_set = FALSE; | |
1510 | BOOL receiving_message = TRUE; | |
33d73e3b | 1511 | BOOL sender_ident_set = FALSE; |
8669f003 | 1512 | BOOL session_local_queue_only; |
059ec3d9 PH |
1513 | BOOL unprivileged; |
1514 | BOOL removed_privilege = FALSE; | |
81ea09ca | 1515 | BOOL usage_wanted = FALSE; |
059ec3d9 PH |
1516 | BOOL verify_address_mode = FALSE; |
1517 | BOOL verify_as_sender = FALSE; | |
1518 | BOOL version_printed = FALSE; | |
1519 | uschar *alias_arg = NULL; | |
1520 | uschar *called_as = US""; | |
a3fb9793 | 1521 | uschar *cmdline_syslog_name = NULL; |
059ec3d9 PH |
1522 | uschar *start_queue_run_id = NULL; |
1523 | uschar *stop_queue_run_id = NULL; | |
328895cc | 1524 | uschar *expansion_test_message = NULL; |
059ec3d9 PH |
1525 | uschar *ftest_domain = NULL; |
1526 | uschar *ftest_localpart = NULL; | |
1527 | uschar *ftest_prefix = NULL; | |
1528 | uschar *ftest_suffix = NULL; | |
0ad2e0fc | 1529 | uschar *log_oneline = NULL; |
8544e77a | 1530 | uschar *malware_test_file = NULL; |
059ec3d9 PH |
1531 | uschar *real_sender_address; |
1532 | uschar *originator_home = US"/"; | |
a3fb9793 | 1533 | size_t sz; |
059ec3d9 PH |
1534 | void *reset_point; |
1535 | ||
1536 | struct passwd *pw; | |
1537 | struct stat statbuf; | |
1538 | pid_t passed_qr_pid = (pid_t)0; | |
1539 | int passed_qr_pipe = -1; | |
1540 | gid_t group_list[NGROUPS_MAX]; | |
1541 | ||
98a90c36 PP |
1542 | /* For the -bI: flag */ |
1543 | enum commandline_info info_flag = CMDINFO_NONE; | |
1544 | BOOL info_stdout = FALSE; | |
1545 | ||
059ec3d9 PH |
1546 | /* Possible options for -R and -S */ |
1547 | ||
1548 | static uschar *rsopts[] = { US"f", US"ff", US"r", US"rf", US"rff" }; | |
1549 | ||
1550 | /* Need to define this in case we need to change the environment in order | |
1551 | to get rid of a bogus time zone. We have to make it char rather than uschar | |
1552 | because some OS define it in /usr/include/unistd.h. */ | |
1553 | ||
1554 | extern char **environ; | |
1555 | ||
35edf2ff | 1556 | /* If the Exim user and/or group and/or the configuration file owner/group were |
059ec3d9 PH |
1557 | defined by ref:name at build time, we must now find the actual uid/gid values. |
1558 | This is a feature to make the lives of binary distributors easier. */ | |
1559 | ||
1560 | #ifdef EXIM_USERNAME | |
1561 | if (route_finduser(US EXIM_USERNAME, &pw, &exim_uid)) | |
1562 | { | |
10385c15 PP |
1563 | if (exim_uid == 0) |
1564 | { | |
1565 | fprintf(stderr, "exim: refusing to run with uid 0 for \"%s\"\n", | |
1566 | EXIM_USERNAME); | |
1567 | exit(EXIT_FAILURE); | |
1568 | } | |
084c1d8c PP |
1569 | /* If ref:name uses a number as the name, route_finduser() returns |
1570 | TRUE with exim_uid set and pw coerced to NULL. */ | |
1571 | if (pw) | |
1572 | exim_gid = pw->pw_gid; | |
1573 | #ifndef EXIM_GROUPNAME | |
1574 | else | |
1575 | { | |
1576 | fprintf(stderr, | |
1577 | "exim: ref:name should specify a usercode, not a group.\n" | |
1578 | "exim: can't let you get away with it unless you also specify a group.\n"); | |
1579 | exit(EXIT_FAILURE); | |
1580 | } | |
1581 | #endif | |
059ec3d9 PH |
1582 | } |
1583 | else | |
1584 | { | |
1585 | fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n", | |
1586 | EXIM_USERNAME); | |
1587 | exit(EXIT_FAILURE); | |
1588 | } | |
1589 | #endif | |
1590 | ||
1591 | #ifdef EXIM_GROUPNAME | |
1592 | if (!route_findgroup(US EXIM_GROUPNAME, &exim_gid)) | |
1593 | { | |
1594 | fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n", | |
1595 | EXIM_GROUPNAME); | |
1596 | exit(EXIT_FAILURE); | |
1597 | } | |
1598 | #endif | |
1599 | ||
1600 | #ifdef CONFIGURE_OWNERNAME | |
1601 | if (!route_finduser(US CONFIGURE_OWNERNAME, NULL, &config_uid)) | |
1602 | { | |
1603 | fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n", | |
1604 | CONFIGURE_OWNERNAME); | |
1605 | exit(EXIT_FAILURE); | |
1606 | } | |
1607 | #endif | |
1608 | ||
79d4bc3d PP |
1609 | /* We default the system_filter_user to be the Exim run-time user, as a |
1610 | sane non-root value. */ | |
1611 | system_filter_uid = exim_uid; | |
1612 | ||
35edf2ff PH |
1613 | #ifdef CONFIGURE_GROUPNAME |
1614 | if (!route_findgroup(US CONFIGURE_GROUPNAME, &config_gid)) | |
1615 | { | |
1616 | fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n", | |
1617 | CONFIGURE_GROUPNAME); | |
1618 | exit(EXIT_FAILURE); | |
1619 | } | |
1620 | #endif | |
1621 | ||
92e6a3d9 JH |
1622 | /* In the Cygwin environment, some initialization used to need doing. |
1623 | It was fudged in by means of this macro; now no longer but we'll leave | |
1624 | it in case of others. */ | |
059ec3d9 PH |
1625 | |
1626 | #ifdef OS_INIT | |
1627 | OS_INIT | |
1628 | #endif | |
1629 | ||
1630 | /* Check a field which is patched when we are running Exim within its | |
1631 | testing harness; do a fast initial check, and then the whole thing. */ | |
1632 | ||
1633 | running_in_test_harness = | |
1634 | *running_status == '<' && Ustrcmp(running_status, "<<<testing>>>") == 0; | |
1635 | ||
1636 | /* The C standard says that the equivalent of setlocale(LC_ALL, "C") is obeyed | |
1637 | at the start of a program; however, it seems that some environments do not | |
1638 | follow this. A "strange" locale can affect the formatting of timestamps, so we | |
1639 | make quite sure. */ | |
1640 | ||
1641 | setlocale(LC_ALL, "C"); | |
1642 | ||
1643 | /* Set up the default handler for timing using alarm(). */ | |
1644 | ||
1645 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
1646 | ||
1647 | /* Ensure we have a buffer for constructing log entries. Use malloc directly, | |
1648 | because store_malloc writes a log entry on failure. */ | |
1649 | ||
1650 | log_buffer = (uschar *)malloc(LOG_BUFFER_SIZE); | |
1651 | if (log_buffer == NULL) | |
1652 | { | |
1653 | fprintf(stderr, "exim: failed to get store for log buffer\n"); | |
1654 | exit(EXIT_FAILURE); | |
1655 | } | |
1656 | ||
6c6d6e48 TF |
1657 | /* Initialize the default log options. */ |
1658 | ||
1659 | bits_set(log_selector, log_selector_size, log_default); | |
1660 | ||
059ec3d9 PH |
1661 | /* Set log_stderr to stderr, provided that stderr exists. This gets reset to |
1662 | NULL when the daemon is run and the file is closed. We have to use this | |
1663 | indirection, because some systems don't allow writing to the variable "stderr". | |
1664 | */ | |
1665 | ||
1666 | if (fstat(fileno(stderr), &statbuf) >= 0) log_stderr = stderr; | |
1667 | ||
1668 | /* Arrange for the PCRE regex library to use our store functions. Note that | |
1669 | the normal calls are actually macros that add additional arguments for | |
1670 | debugging purposes so we have to assign specially constructed functions here. | |
1671 | The default is to use store in the stacking pool, but this is overridden in the | |
1672 | regex_must_compile() function. */ | |
1673 | ||
1674 | pcre_malloc = function_store_get; | |
1675 | pcre_free = function_dummy_free; | |
1676 | ||
1677 | /* Ensure there is a big buffer for temporary use in several places. It is put | |
1678 | in malloc store so that it can be freed for enlargement if necessary. */ | |
1679 | ||
1680 | big_buffer = store_malloc(big_buffer_size); | |
1681 | ||
1682 | /* Set up the handler for the data request signal, and set the initial | |
1683 | descriptive text. */ | |
1684 | ||
1685 | set_process_info("initializing"); | |
1686 | os_restarting_signal(SIGUSR1, usr1_handler); | |
1687 | ||
1688 | /* SIGHUP is used to get the daemon to reconfigure. It gets set as appropriate | |
1689 | in the daemon code. For the rest of Exim's uses, we ignore it. */ | |
1690 | ||
1691 | signal(SIGHUP, SIG_IGN); | |
1692 | ||
1693 | /* We don't want to die on pipe errors as the code is written to handle | |
1694 | the write error instead. */ | |
1695 | ||
1696 | signal(SIGPIPE, SIG_IGN); | |
1697 | ||
1698 | /* Under some circumstance on some OS, Exim can get called with SIGCHLD | |
1699 | set to SIG_IGN. This causes subprocesses that complete before the parent | |
1700 | process waits for them not to hang around, so when Exim calls wait(), nothing | |
1701 | is there. The wait() code has been made robust against this, but let's ensure | |
1702 | that SIGCHLD is set to SIG_DFL, because it's tidier to wait and get a process | |
1703 | ending status. We use sigaction rather than plain signal() on those OS where | |
1704 | SA_NOCLDWAIT exists, because we want to be sure it is turned off. (There was a | |
1705 | problem on AIX with this.) */ | |
1706 | ||
1707 | #ifdef SA_NOCLDWAIT | |
1708 | { | |
1709 | struct sigaction act; | |
1710 | act.sa_handler = SIG_DFL; | |
1711 | sigemptyset(&(act.sa_mask)); | |
1712 | act.sa_flags = 0; | |
1713 | sigaction(SIGCHLD, &act, NULL); | |
1714 | } | |
1715 | #else | |
1716 | signal(SIGCHLD, SIG_DFL); | |
1717 | #endif | |
1718 | ||
1719 | /* Save the arguments for use if we re-exec exim as a daemon after receiving | |
1720 | SIGHUP. */ | |
1721 | ||
1722 | sighup_argv = argv; | |
1723 | ||
1724 | /* Set up the version number. Set up the leading 'E' for the external form of | |
1725 | message ids, set the pointer to the internal form, and initialize it to | |
1726 | indicate no message being processed. */ | |
1727 | ||
1728 | version_init(); | |
1729 | message_id_option[0] = '-'; | |
1730 | message_id_external = message_id_option + 1; | |
1731 | message_id_external[0] = 'E'; | |
1732 | message_id = message_id_external + 1; | |
1733 | message_id[0] = 0; | |
1734 | ||
67d175de | 1735 | /* Set the umask to zero so that any files Exim creates using open() are |
2632889e PH |
1736 | created with the modes that it specifies. NOTE: Files created with fopen() have |
1737 | a problem, which was not recognized till rather late (February 2006). With this | |
1738 | umask, such files will be world writeable. (They are all content scanning files | |
1739 | in the spool directory, which isn't world-accessible, so this is not a | |
1740 | disaster, but it's untidy.) I don't want to change this overall setting, | |
1741 | however, because it will interact badly with the open() calls. Instead, there's | |
1742 | now a function called modefopen() that fiddles with the umask while calling | |
1743 | fopen(). */ | |
059ec3d9 | 1744 | |
67d175de | 1745 | (void)umask(0); |
059ec3d9 PH |
1746 | |
1747 | /* Precompile the regular expression for matching a message id. Keep this in | |
1748 | step with the code that generates ids in the accept.c module. We need to do | |
1749 | this here, because the -M options check their arguments for syntactic validity | |
1750 | using mac_ismsgid, which uses this. */ | |
1751 | ||
1752 | regex_ismsgid = | |
1753 | regex_must_compile(US"^(?:[^\\W_]{6}-){2}[^\\W_]{2}$", FALSE, TRUE); | |
1754 | ||
a5bd321b | 1755 | /* Precompile the regular expression that is used for matching an SMTP error |
d6a96edc PH |
1756 | code, possibly extended, at the start of an error message. Note that the |
1757 | terminating whitespace character is included. */ | |
a5bd321b PH |
1758 | |
1759 | regex_smtp_code = | |
1760 | regex_must_compile(US"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?", | |
1761 | FALSE, TRUE); | |
1762 | ||
a7cbbf50 PP |
1763 | #ifdef WHITELIST_D_MACROS |
1764 | /* Precompile the regular expression used to filter the content of macros | |
1765 | given to -D for permissibility. */ | |
1766 | ||
1767 | regex_whitelisted_macro = | |
1768 | regex_must_compile(US"^[A-Za-z0-9_/.-]*$", FALSE, TRUE); | |
1769 | #endif | |
1770 | ||
f38917cc JH |
1771 | for (i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL; |
1772 | ||
059ec3d9 PH |
1773 | /* If the program is called as "mailq" treat it as equivalent to "exim -bp"; |
1774 | this seems to be a generally accepted convention, since one finds symbolic | |
1775 | links called "mailq" in standard OS configurations. */ | |
1776 | ||
1777 | if ((namelen == 5 && Ustrcmp(argv[0], "mailq") == 0) || | |
1778 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/mailq", 6) == 0)) | |
1779 | { | |
1780 | list_queue = TRUE; | |
1781 | receiving_message = FALSE; | |
1782 | called_as = US"-mailq"; | |
1783 | } | |
1784 | ||
1785 | /* If the program is called as "rmail" treat it as equivalent to | |
1786 | "exim -i -oee", thus allowing UUCP messages to be input using non-SMTP mode, | |
1787 | i.e. preventing a single dot on a line from terminating the message, and | |
1788 | returning with zero return code, even in cases of error (provided an error | |
1789 | message has been sent). */ | |
1790 | ||
1791 | if ((namelen == 5 && Ustrcmp(argv[0], "rmail") == 0) || | |
1792 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rmail", 6) == 0)) | |
1793 | { | |
1794 | dot_ends = FALSE; | |
1795 | called_as = US"-rmail"; | |
1796 | errors_sender_rc = EXIT_SUCCESS; | |
1797 | } | |
1798 | ||
1799 | /* If the program is called as "rsmtp" treat it as equivalent to "exim -bS"; | |
1800 | this is a smail convention. */ | |
1801 | ||
1802 | if ((namelen == 5 && Ustrcmp(argv[0], "rsmtp") == 0) || | |
1803 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rsmtp", 6) == 0)) | |
1804 | { | |
1805 | smtp_input = smtp_batched_input = TRUE; | |
1806 | called_as = US"-rsmtp"; | |
1807 | } | |
1808 | ||
1809 | /* If the program is called as "runq" treat it as equivalent to "exim -q"; | |
1810 | this is a smail convention. */ | |
1811 | ||
1812 | if ((namelen == 4 && Ustrcmp(argv[0], "runq") == 0) || | |
1813 | (namelen > 4 && Ustrncmp(argv[0] + namelen - 5, "/runq", 5) == 0)) | |
1814 | { | |
1815 | queue_interval = 0; | |
1816 | receiving_message = FALSE; | |
1817 | called_as = US"-runq"; | |
1818 | } | |
1819 | ||
1820 | /* If the program is called as "newaliases" treat it as equivalent to | |
1821 | "exim -bi"; this is a sendmail convention. */ | |
1822 | ||
1823 | if ((namelen == 10 && Ustrcmp(argv[0], "newaliases") == 0) || | |
1824 | (namelen > 10 && Ustrncmp(argv[0] + namelen - 11, "/newaliases", 11) == 0)) | |
1825 | { | |
1826 | bi_option = TRUE; | |
1827 | receiving_message = FALSE; | |
1828 | called_as = US"-newaliases"; | |
1829 | } | |
1830 | ||
1831 | /* Save the original effective uid for a couple of uses later. It should | |
1832 | normally be root, but in some esoteric environments it may not be. */ | |
1833 | ||
1834 | original_euid = geteuid(); | |
1835 | ||
1836 | /* Get the real uid and gid. If the caller is root, force the effective uid/gid | |
1837 | to be the same as the real ones. This makes a difference only if Exim is setuid | |
1838 | (or setgid) to something other than root, which could be the case in some | |
1839 | special configurations. */ | |
1840 | ||
1841 | real_uid = getuid(); | |
1842 | real_gid = getgid(); | |
1843 | ||
1844 | if (real_uid == root_uid) | |
1845 | { | |
1670ef10 PP |
1846 | rv = setgid(real_gid); |
1847 | if (rv) | |
1848 | { | |
1849 | fprintf(stderr, "exim: setgid(%ld) failed: %s\n", | |
1850 | (long int)real_gid, strerror(errno)); | |
1851 | exit(EXIT_FAILURE); | |
1852 | } | |
1853 | rv = setuid(real_uid); | |
1854 | if (rv) | |
1855 | { | |
1856 | fprintf(stderr, "exim: setuid(%ld) failed: %s\n", | |
1857 | (long int)real_uid, strerror(errno)); | |
1858 | exit(EXIT_FAILURE); | |
1859 | } | |
059ec3d9 PH |
1860 | } |
1861 | ||
1862 | /* If neither the original real uid nor the original euid was root, Exim is | |
1863 | running in an unprivileged state. */ | |
1864 | ||
1865 | unprivileged = (real_uid != root_uid && original_euid != root_uid); | |
1866 | ||
059ec3d9 PH |
1867 | /* Scan the program's arguments. Some can be dealt with right away; others are |
1868 | simply recorded for checking and handling afterwards. Do a high-level switch | |
1869 | on the second character (the one after '-'), to save some effort. */ | |
1870 | ||
1871 | for (i = 1; i < argc; i++) | |
1872 | { | |
1873 | BOOL badarg = FALSE; | |
1874 | uschar *arg = argv[i]; | |
1875 | uschar *argrest; | |
1876 | int switchchar; | |
1877 | ||
1878 | /* An argument not starting with '-' is the start of a recipients list; | |
1879 | break out of the options-scanning loop. */ | |
1880 | ||
1881 | if (arg[0] != '-') | |
1882 | { | |
1883 | recipients_arg = i; | |
1884 | break; | |
1885 | } | |
1886 | ||
1887 | /* An option consistion of -- terminates the options */ | |
1888 | ||
1889 | if (Ustrcmp(arg, "--") == 0) | |
1890 | { | |
1891 | recipients_arg = i + 1; | |
1892 | break; | |
1893 | } | |
1894 | ||
1895 | /* Handle flagged options */ | |
1896 | ||
1897 | switchchar = arg[1]; | |
1898 | argrest = arg+2; | |
1899 | ||
1900 | /* Make all -ex options synonymous with -oex arguments, since that | |
1901 | is assumed by various callers. Also make -qR options synonymous with -R | |
1902 | options, as that seems to be required as well. Allow for -qqR too, and | |
1903 | the same for -S options. */ | |
1904 | ||
1905 | if (Ustrncmp(arg+1, "oe", 2) == 0 || | |
1906 | Ustrncmp(arg+1, "qR", 2) == 0 || | |
1907 | Ustrncmp(arg+1, "qS", 2) == 0) | |
1908 | { | |
1909 | switchchar = arg[2]; | |
1910 | argrest++; | |
1911 | } | |
1912 | else if (Ustrncmp(arg+1, "qqR", 3) == 0 || Ustrncmp(arg+1, "qqS", 3) == 0) | |
1913 | { | |
1914 | switchchar = arg[3]; | |
1915 | argrest += 2; | |
1916 | queue_2stage = TRUE; | |
1917 | } | |
1918 | ||
1919 | /* Make -r synonymous with -f, since it is a documented alias */ | |
1920 | ||
1921 | else if (arg[1] == 'r') switchchar = 'f'; | |
1922 | ||
1923 | /* Make -ov synonymous with -v */ | |
1924 | ||
1925 | else if (Ustrcmp(arg, "-ov") == 0) | |
1926 | { | |
1927 | switchchar = 'v'; | |
1928 | argrest++; | |
1929 | } | |
1930 | ||
4b2241d2 PP |
1931 | /* deal with --option_aliases */ |
1932 | else if (switchchar == '-') | |
1933 | { | |
1934 | if (Ustrcmp(argrest, "help") == 0) | |
1935 | { | |
1936 | usage_wanted = TRUE; | |
1937 | break; | |
1938 | } | |
1939 | else if (Ustrcmp(argrest, "version") == 0) | |
1940 | { | |
1941 | switchchar = 'b'; | |
73a46702 | 1942 | argrest = US"V"; |
4b2241d2 PP |
1943 | } |
1944 | } | |
1945 | ||
059ec3d9 PH |
1946 | /* High-level switch on active initial letter */ |
1947 | ||
1948 | switch(switchchar) | |
1949 | { | |
a3fb9793 PP |
1950 | |
1951 | /* sendmail uses -Ac and -Am to control which .cf file is used; | |
1952 | we ignore them. */ | |
1953 | case 'A': | |
1954 | if (*argrest == '\0') { badarg = TRUE; break; } | |
1955 | else | |
1956 | { | |
1957 | BOOL ignore = FALSE; | |
1958 | switch (*argrest) | |
1959 | { | |
1960 | case 'c': | |
1961 | case 'm': | |
1962 | if (*(argrest + 1) == '\0') | |
1963 | ignore = TRUE; | |
1964 | break; | |
1965 | } | |
1966 | if (!ignore) { badarg = TRUE; break; } | |
1967 | } | |
1968 | break; | |
1969 | ||
059ec3d9 PH |
1970 | /* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean |
1971 | so has no need of it. */ | |
1972 | ||
1973 | case 'B': | |
1974 | if (*argrest == 0) i++; /* Skip over the type */ | |
1975 | break; | |
1976 | ||
1977 | ||
1978 | case 'b': | |
1979 | receiving_message = FALSE; /* Reset TRUE for -bm, -bS, -bs below */ | |
1980 | ||
1981 | /* -bd: Run in daemon mode, awaiting SMTP connections. | |
1982 | -bdf: Ditto, but in the foreground. | |
1983 | */ | |
1984 | ||
1985 | if (*argrest == 'd') | |
1986 | { | |
1987 | daemon_listen = TRUE; | |
1988 | if (*(++argrest) == 'f') background_daemon = FALSE; | |
1989 | else if (*argrest != 0) { badarg = TRUE; break; } | |
1990 | } | |
1991 | ||
328895cc PH |
1992 | /* -be: Run in expansion test mode |
1993 | -bem: Ditto, but read a message from a file first | |
1994 | */ | |
059ec3d9 PH |
1995 | |
1996 | else if (*argrest == 'e') | |
328895cc | 1997 | { |
059ec3d9 | 1998 | expansion_test = checking = TRUE; |
328895cc PH |
1999 | if (argrest[1] == 'm') |
2000 | { | |
2001 | if (++i >= argc) { badarg = TRUE; break; } | |
2002 | expansion_test_message = argv[i]; | |
2003 | argrest++; | |
2004 | } | |
2005 | if (argrest[1] != 0) { badarg = TRUE; break; } | |
2006 | } | |
059ec3d9 | 2007 | |
f05da2e8 PH |
2008 | /* -bF: Run system filter test */ |
2009 | ||
2010 | else if (*argrest == 'F') | |
2011 | { | |
34e86e20 | 2012 | filter_test |= checking = FTEST_SYSTEM; |
f05da2e8 PH |
2013 | if (*(++argrest) != 0) { badarg = TRUE; break; } |
2014 | if (++i < argc) filter_test_sfile = argv[i]; else | |
2015 | { | |
2016 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
2017 | exit(EXIT_FAILURE); | |
2018 | } | |
2019 | } | |
2020 | ||
2021 | /* -bf: Run user filter test | |
059ec3d9 PH |
2022 | -bfd: Set domain for filter testing |
2023 | -bfl: Set local part for filter testing | |
2024 | -bfp: Set prefix for filter testing | |
2025 | -bfs: Set suffix for filter testing | |
2026 | */ | |
2027 | ||
f05da2e8 | 2028 | else if (*argrest == 'f') |
059ec3d9 | 2029 | { |
f05da2e8 | 2030 | if (*(++argrest) == 0) |
059ec3d9 | 2031 | { |
34e86e20 | 2032 | filter_test |= checking = FTEST_USER; |
f05da2e8 | 2033 | if (++i < argc) filter_test_ufile = argv[i]; else |
059ec3d9 PH |
2034 | { |
2035 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
2036 | exit(EXIT_FAILURE); | |
2037 | } | |
2038 | } | |
2039 | else | |
2040 | { | |
2041 | if (++i >= argc) | |
2042 | { | |
2043 | fprintf(stderr, "exim: string expected after %s\n", arg); | |
2044 | exit(EXIT_FAILURE); | |
2045 | } | |
2046 | if (Ustrcmp(argrest, "d") == 0) ftest_domain = argv[i]; | |
2047 | else if (Ustrcmp(argrest, "l") == 0) ftest_localpart = argv[i]; | |
2048 | else if (Ustrcmp(argrest, "p") == 0) ftest_prefix = argv[i]; | |
2049 | else if (Ustrcmp(argrest, "s") == 0) ftest_suffix = argv[i]; | |
2050 | else { badarg = TRUE; break; } | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | /* -bh: Host checking - an IP address must follow. */ | |
2055 | ||
2056 | else if (Ustrcmp(argrest, "h") == 0 || Ustrcmp(argrest, "hc") == 0) | |
2057 | { | |
2058 | if (++i >= argc) { badarg = TRUE; break; } | |
2059 | sender_host_address = argv[i]; | |
2060 | host_checking = checking = log_testing_mode = TRUE; | |
2061 | host_checking_callout = argrest[1] == 'c'; | |
1a6230a3 | 2062 | message_logs = FALSE; |
059ec3d9 PH |
2063 | } |
2064 | ||
2065 | /* -bi: This option is used by sendmail to initialize *the* alias file, | |
2066 | though it has the -oA option to specify a different file. Exim has no | |
2067 | concept of *the* alias file, but since Sun's YP make script calls | |
2068 | sendmail this way, some support must be provided. */ | |
2069 | ||
2070 | else if (Ustrcmp(argrest, "i") == 0) bi_option = TRUE; | |
2071 | ||
98a90c36 PP |
2072 | /* -bI: provide information, of the type to follow after a colon. |
2073 | This is an Exim flag. */ | |
2074 | ||
2075 | else if (argrest[0] == 'I' && Ustrlen(argrest) >= 2 && argrest[1] == ':') | |
2076 | { | |
2077 | uschar *p = &argrest[2]; | |
2078 | info_flag = CMDINFO_HELP; | |
2079 | if (Ustrlen(p)) | |
2080 | { | |
2081 | if (strcmpic(p, CUS"sieve") == 0) | |
2082 | { | |
2083 | info_flag = CMDINFO_SIEVE; | |
2084 | info_stdout = TRUE; | |
2085 | } | |
36a3ae5f PP |
2086 | else if (strcmpic(p, CUS"dscp") == 0) |
2087 | { | |
2088 | info_flag = CMDINFO_DSCP; | |
2089 | info_stdout = TRUE; | |
2090 | } | |
98a90c36 PP |
2091 | else if (strcmpic(p, CUS"help") == 0) |
2092 | { | |
2093 | info_stdout = TRUE; | |
2094 | } | |
2095 | } | |
2096 | } | |
2097 | ||
059ec3d9 PH |
2098 | /* -bm: Accept and deliver message - the default option. Reinstate |
2099 | receiving_message, which got turned off for all -b options. */ | |
2100 | ||
2101 | else if (Ustrcmp(argrest, "m") == 0) receiving_message = TRUE; | |
2102 | ||
8544e77a PP |
2103 | /* -bmalware: test the filename given for malware */ |
2104 | ||
2105 | else if (Ustrcmp(argrest, "malware") == 0) | |
2106 | { | |
2107 | if (++i >= argc) { badarg = TRUE; break; } | |
34e86e20 | 2108 | checking = TRUE; |
8544e77a PP |
2109 | malware_test_file = argv[i]; |
2110 | } | |
2111 | ||
059ec3d9 PH |
2112 | /* -bnq: For locally originating messages, do not qualify unqualified |
2113 | addresses. In the envelope, this causes errors; in header lines they | |
2114 | just get left. */ | |
2115 | ||
2116 | else if (Ustrcmp(argrest, "nq") == 0) | |
2117 | { | |
2118 | allow_unqualified_sender = FALSE; | |
2119 | allow_unqualified_recipient = FALSE; | |
2120 | } | |
2121 | ||
2122 | /* -bpxx: List the contents of the mail queue, in various forms. If | |
2123 | the option is -bpc, just a queue count is needed. Otherwise, if the | |
2124 | first letter after p is r, then order is random. */ | |
2125 | ||
2126 | else if (*argrest == 'p') | |
2127 | { | |
2128 | if (*(++argrest) == 'c') | |
2129 | { | |
2130 | count_queue = TRUE; | |
2131 | if (*(++argrest) != 0) badarg = TRUE; | |
2132 | break; | |
2133 | } | |
2134 | ||
2135 | if (*argrest == 'r') | |
2136 | { | |
2137 | list_queue_option = 8; | |
2138 | argrest++; | |
2139 | } | |
2140 | else list_queue_option = 0; | |
2141 | ||
2142 | list_queue = TRUE; | |
2143 | ||
2144 | /* -bp: List the contents of the mail queue, top-level only */ | |
2145 | ||
2146 | if (*argrest == 0) {} | |
2147 | ||
2148 | /* -bpu: List the contents of the mail queue, top-level undelivered */ | |
2149 | ||
2150 | else if (Ustrcmp(argrest, "u") == 0) list_queue_option += 1; | |
2151 | ||
2152 | /* -bpa: List the contents of the mail queue, including all delivered */ | |
2153 | ||
2154 | else if (Ustrcmp(argrest, "a") == 0) list_queue_option += 2; | |
2155 | ||
2156 | /* Unknown after -bp[r] */ | |
2157 | ||
2158 | else | |
2159 | { | |
2160 | badarg = TRUE; | |
2161 | break; | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | ||
2166 | /* -bP: List the configuration variables given as the address list. | |
2167 | Force -v, so configuration errors get displayed. */ | |
2168 | ||
2169 | else if (Ustrcmp(argrest, "P") == 0) | |
2170 | { | |
bf3c2c6b HSHR |
2171 | /* -bP config: we need to setup here, because later, |
2172 | * when list_options is checked, the config is read already */ | |
2173 | if (argv[i+1] && Ustrcmp(argv[i+1], "config") == 0) | |
2174 | { | |
2175 | list_config = TRUE; | |
2176 | readconf_save_config(version_string); | |
2177 | } | |
2178 | else | |
2179 | { | |
2180 | list_options = TRUE; | |
2181 | debug_selector |= D_v; | |
2182 | debug_file = stderr; | |
2183 | } | |
059ec3d9 PH |
2184 | } |
2185 | ||
2186 | /* -brt: Test retry configuration lookup */ | |
2187 | ||
2188 | else if (Ustrcmp(argrest, "rt") == 0) | |
2189 | { | |
34e86e20 | 2190 | checking = TRUE; |
059ec3d9 PH |
2191 | test_retry_arg = i + 1; |
2192 | goto END_ARG; | |
2193 | } | |
2194 | ||
2195 | /* -brw: Test rewrite configuration */ | |
2196 | ||
2197 | else if (Ustrcmp(argrest, "rw") == 0) | |
2198 | { | |
34e86e20 | 2199 | checking = TRUE; |
059ec3d9 PH |
2200 | test_rewrite_arg = i + 1; |
2201 | goto END_ARG; | |
2202 | } | |
2203 | ||
2204 | /* -bS: Read SMTP commands on standard input, but produce no replies - | |
2205 | all errors are reported by sending messages. */ | |
2206 | ||
2207 | else if (Ustrcmp(argrest, "S") == 0) | |
2208 | smtp_input = smtp_batched_input = receiving_message = TRUE; | |
2209 | ||
2210 | /* -bs: Read SMTP commands on standard input and produce SMTP replies | |
2211 | on standard output. */ | |
2212 | ||
2213 | else if (Ustrcmp(argrest, "s") == 0) smtp_input = receiving_message = TRUE; | |
2214 | ||
2215 | /* -bt: address testing mode */ | |
2216 | ||
2217 | else if (Ustrcmp(argrest, "t") == 0) | |
2218 | address_test_mode = checking = log_testing_mode = TRUE; | |
2219 | ||
2220 | /* -bv: verify addresses */ | |
2221 | ||
2222 | else if (Ustrcmp(argrest, "v") == 0) | |
2223 | verify_address_mode = checking = log_testing_mode = TRUE; | |
2224 | ||
2225 | /* -bvs: verify sender addresses */ | |
2226 | ||
2227 | else if (Ustrcmp(argrest, "vs") == 0) | |
2228 | { | |
2229 | verify_address_mode = checking = log_testing_mode = TRUE; | |
2230 | verify_as_sender = TRUE; | |
2231 | } | |
2232 | ||
2233 | /* -bV: Print version string and support details */ | |
2234 | ||
2235 | else if (Ustrcmp(argrest, "V") == 0) | |
2236 | { | |
2237 | printf("Exim version %s #%s built %s\n", version_string, | |
2238 | version_cnumber, version_date); | |
2239 | printf("%s\n", CS version_copyright); | |
2240 | version_printed = TRUE; | |
2241 | show_whats_supported(stdout); | |
b25c9675 | 2242 | log_testing_mode = TRUE; |
059ec3d9 PH |
2243 | } |
2244 | ||
9ee44efb PP |
2245 | /* -bw: inetd wait mode, accept a listening socket as stdin */ |
2246 | ||
2247 | else if (*argrest == 'w') | |
2248 | { | |
2249 | inetd_wait_mode = TRUE; | |
2250 | background_daemon = FALSE; | |
2251 | daemon_listen = TRUE; | |
2252 | if (*(++argrest) != '\0') | |
2253 | { | |
2254 | inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE); | |
2255 | if (inetd_wait_timeout <= 0) | |
2256 | { | |
2257 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); | |
2258 | exit(EXIT_FAILURE); | |
2259 | } | |
2260 | } | |
2261 | } | |
2262 | ||
059ec3d9 PH |
2263 | else badarg = TRUE; |
2264 | break; | |
2265 | ||
2266 | ||
2267 | /* -C: change configuration file list; ignore if it isn't really | |
2268 | a change! Enforce a prefix check if required. */ | |
2269 | ||
2270 | case 'C': | |
2271 | if (*argrest == 0) | |
2272 | { | |
2273 | if(++i < argc) argrest = argv[i]; else | |
2274 | { badarg = TRUE; break; } | |
2275 | } | |
2276 | if (Ustrcmp(config_main_filelist, argrest) != 0) | |
2277 | { | |
2278 | #ifdef ALT_CONFIG_PREFIX | |
2279 | int sep = 0; | |
2280 | int len = Ustrlen(ALT_CONFIG_PREFIX); | |
2281 | uschar *list = argrest; | |
2282 | uschar *filename; | |
2283 | while((filename = string_nextinlist(&list, &sep, big_buffer, | |
2284 | big_buffer_size)) != NULL) | |
2285 | { | |
2286 | if ((Ustrlen(filename) < len || | |
2287 | Ustrncmp(filename, ALT_CONFIG_PREFIX, len) != 0 || | |
2288 | Ustrstr(filename, "/../") != NULL) && | |
2289 | (Ustrcmp(filename, "/dev/null") != 0 || real_uid != root_uid)) | |
2290 | { | |
2291 | fprintf(stderr, "-C Permission denied\n"); | |
2292 | exit(EXIT_FAILURE); | |
2293 | } | |
2294 | } | |
2295 | #endif | |
261dc43e DW |
2296 | if (real_uid != root_uid) |
2297 | { | |
90b6341f | 2298 | #ifdef TRUSTED_CONFIG_LIST |
261dc43e | 2299 | |
90b6341f DW |
2300 | if (real_uid != exim_uid |
2301 | #ifdef CONFIGURE_OWNER | |
2302 | && real_uid != config_uid | |
2303 | #endif | |
2304 | ) | |
261dc43e DW |
2305 | trusted_config = FALSE; |
2306 | else | |
2307 | { | |
90b6341f | 2308 | FILE *trust_list = Ufopen(TRUSTED_CONFIG_LIST, "rb"); |
261dc43e DW |
2309 | if (trust_list) |
2310 | { | |
2311 | struct stat statbuf; | |
2312 | ||
2313 | if (fstat(fileno(trust_list), &statbuf) != 0 || | |
2314 | (statbuf.st_uid != root_uid /* owner not root */ | |
2315 | #ifdef CONFIGURE_OWNER | |
2316 | && statbuf.st_uid != config_uid /* owner not the special one */ | |
2317 | #endif | |
2318 | ) || /* or */ | |
2319 | (statbuf.st_gid != root_gid /* group not root */ | |
2320 | #ifdef CONFIGURE_GROUP | |
2321 | && statbuf.st_gid != config_gid /* group not the special one */ | |
2322 | #endif | |
2323 | && (statbuf.st_mode & 020) != 0 /* group writeable */ | |
2324 | ) || /* or */ | |
2325 | (statbuf.st_mode & 2) != 0) /* world writeable */ | |
2326 | { | |
2327 | trusted_config = FALSE; | |
2328 | fclose(trust_list); | |
2329 | } | |
2330 | else | |
2331 | { | |
2332 | /* Well, the trust list at least is up to scratch... */ | |
2333 | void *reset_point = store_get(0); | |
90b6341f DW |
2334 | uschar *trusted_configs[32]; |
2335 | int nr_configs = 0; | |
261dc43e DW |
2336 | int i = 0; |
2337 | ||
2338 | while (Ufgets(big_buffer, big_buffer_size, trust_list)) | |
2339 | { | |
2340 | uschar *start = big_buffer, *nl; | |
2341 | while (*start && isspace(*start)) | |
2342 | start++; | |
1e83d68b | 2343 | if (*start != '/') |
261dc43e DW |
2344 | continue; |
2345 | nl = Ustrchr(start, '\n'); | |
2346 | if (nl) | |
2347 | *nl = 0; | |
90b6341f DW |
2348 | trusted_configs[nr_configs++] = string_copy(start); |
2349 | if (nr_configs == 32) | |
261dc43e DW |
2350 | break; |
2351 | } | |
2352 | fclose(trust_list); | |
2353 | ||
90b6341f | 2354 | if (nr_configs) |
261dc43e DW |
2355 | { |
2356 | int sep = 0; | |
55414b25 | 2357 | const uschar *list = argrest; |
261dc43e DW |
2358 | uschar *filename; |
2359 | while (trusted_config && (filename = string_nextinlist(&list, | |
2360 | &sep, big_buffer, big_buffer_size)) != NULL) | |
2361 | { | |
90b6341f | 2362 | for (i=0; i < nr_configs; i++) |
261dc43e | 2363 | { |
90b6341f | 2364 | if (Ustrcmp(filename, trusted_configs[i]) == 0) |
261dc43e DW |
2365 | break; |
2366 | } | |
90b6341f | 2367 | if (i == nr_configs) |
261dc43e DW |
2368 | { |
2369 | trusted_config = FALSE; | |
2370 | break; | |
2371 | } | |
2372 | } | |
1e83d68b | 2373 | store_reset(reset_point); |
261dc43e DW |
2374 | } |
2375 | else | |
2376 | { | |
2377 | /* No valid prefixes found in trust_list file. */ | |
2378 | trusted_config = FALSE; | |
2379 | } | |
2380 | } | |
2381 | } | |
2382 | else | |
2383 | { | |
2384 | /* Could not open trust_list file. */ | |
2385 | trusted_config = FALSE; | |
2386 | } | |
2387 | } | |
2388 | #else | |
2389 | /* Not root; don't trust config */ | |
2390 | trusted_config = FALSE; | |
2391 | #endif | |
2392 | } | |
059ec3d9 PH |
2393 | |
2394 | config_main_filelist = argrest; | |
2395 | config_changed = TRUE; | |
2396 | } | |
2397 | break; | |
2398 | ||
2399 | ||
2400 | /* -D: set up a macro definition */ | |
2401 | ||
2402 | case 'D': | |
2403 | #ifdef DISABLE_D_OPTION | |
2404 | fprintf(stderr, "exim: -D is not available in this Exim binary\n"); | |
2405 | exit(EXIT_FAILURE); | |
2406 | #else | |
2407 | { | |
2408 | int ptr = 0; | |
2409 | macro_item *mlast = NULL; | |
2410 | macro_item *m; | |
2411 | uschar name[24]; | |
2412 | uschar *s = argrest; | |
2413 | ||
2414 | while (isspace(*s)) s++; | |
2415 | ||
2416 | if (*s < 'A' || *s > 'Z') | |
2417 | { | |
2418 | fprintf(stderr, "exim: macro name set by -D must start with " | |
2419 | "an upper case letter\n"); | |
2420 | exit(EXIT_FAILURE); | |
2421 | } | |
2422 | ||
2423 | while (isalnum(*s) || *s == '_') | |
2424 | { | |
2425 | if (ptr < sizeof(name)-1) name[ptr++] = *s; | |
2426 | s++; | |
2427 | } | |
2428 | name[ptr] = 0; | |
2429 | if (ptr == 0) { badarg = TRUE; break; } | |
2430 | while (isspace(*s)) s++; | |
2431 | if (*s != 0) | |
2432 | { | |
2433 | if (*s++ != '=') { badarg = TRUE; break; } | |
2434 | while (isspace(*s)) s++; | |
2435 | } | |
2436 | ||
2437 | for (m = macros; m != NULL; m = m->next) | |
2438 | { | |
2439 | if (Ustrcmp(m->name, name) == 0) | |
2440 | { | |
2441 | fprintf(stderr, "exim: duplicated -D in command line\n"); | |
2442 | exit(EXIT_FAILURE); | |
2443 | } | |
2444 | mlast = m; | |
2445 | } | |
2446 | ||
2447 | m = store_get(sizeof(macro_item) + Ustrlen(name)); | |
2448 | m->next = NULL; | |
2449 | m->command_line = TRUE; | |
2450 | if (mlast == NULL) macros = m; else mlast->next = m; | |
2451 | Ustrcpy(m->name, name); | |
2452 | m->replacement = string_copy(s); | |
2453 | ||
2454 | if (clmacro_count >= MAX_CLMACROS) | |
2455 | { | |
2456 | fprintf(stderr, "exim: too many -D options on command line\n"); | |
2457 | exit(EXIT_FAILURE); | |
2458 | } | |
2459 | clmacros[clmacro_count++] = string_sprintf("-D%s=%s", m->name, | |
2460 | m->replacement); | |
2461 | } | |
2462 | #endif | |
2463 | break; | |
2464 | ||
2465 | /* -d: Set debug level (see also -v below) or set the drop_cr option. | |
8e669ac1 | 2466 | The latter is now a no-op, retained for compatibility only. If -dd is used, |
3d235903 | 2467 | debugging subprocesses of the daemon is disabled. */ |
059ec3d9 PH |
2468 | |
2469 | case 'd': | |
2470 | if (Ustrcmp(argrest, "ropcr") == 0) | |
2471 | { | |
2472 | /* drop_cr = TRUE; */ | |
2473 | } | |
2474 | ||
2475 | /* Use an intermediate variable so that we don't set debugging while | |
2476 | decoding the debugging bits. */ | |
2477 | ||
2478 | else | |
2479 | { | |
2480 | unsigned int selector = D_default; | |
2481 | debug_selector = 0; | |
2482 | debug_file = NULL; | |
3d235903 PH |
2483 | if (*argrest == 'd') |
2484 | { | |
2485 | debug_daemon = TRUE; | |
2486 | argrest++; | |
2487 | } | |
059ec3d9 | 2488 | if (*argrest != 0) |
6c6d6e48 TF |
2489 | decode_bits(&selector, 1, debug_notall, argrest, |
2490 | debug_options, debug_options_count, US"debug", 0); | |
059ec3d9 PH |
2491 | debug_selector = selector; |
2492 | } | |
2493 | break; | |
2494 | ||
2495 | ||
2496 | /* -E: This is a local error message. This option is not intended for | |
2497 | external use at all, but is not restricted to trusted callers because it | |
2498 | does no harm (just suppresses certain error messages) and if Exim is run | |
2499 | not setuid root it won't always be trusted when it generates error | |
2500 | messages using this option. If there is a message id following -E, point | |
2501 | message_reference at it, for logging. */ | |
2502 | ||
2503 | case 'E': | |
2504 | local_error_message = TRUE; | |
2505 | if (mac_ismsgid(argrest)) message_reference = argrest; | |
2506 | break; | |
2507 | ||
2508 | ||
2509 | /* -ex: The vacation program calls sendmail with the undocumented "-eq" | |
2510 | option, so it looks as if historically the -oex options are also callable | |
2511 | without the leading -o. So we have to accept them. Before the switch, | |
2512 | anything starting -oe has been converted to -e. Exim does not support all | |
2513 | of the sendmail error options. */ | |
2514 | ||
2515 | case 'e': | |
2516 | if (Ustrcmp(argrest, "e") == 0) | |
2517 | { | |
2518 | arg_error_handling = ERRORS_SENDER; | |
2519 | errors_sender_rc = EXIT_SUCCESS; | |
2520 | } | |
2521 | else if (Ustrcmp(argrest, "m") == 0) arg_error_handling = ERRORS_SENDER; | |
2522 | else if (Ustrcmp(argrest, "p") == 0) arg_error_handling = ERRORS_STDERR; | |
2523 | else if (Ustrcmp(argrest, "q") == 0) arg_error_handling = ERRORS_STDERR; | |
2524 | else if (Ustrcmp(argrest, "w") == 0) arg_error_handling = ERRORS_SENDER; | |
2525 | else badarg = TRUE; | |
2526 | break; | |
2527 | ||
2528 | ||
2529 | /* -F: Set sender's full name, used instead of the gecos entry from | |
2530 | the password file. Since users can usually alter their gecos entries, | |
2531 | there's no security involved in using this instead. The data can follow | |
2532 | the -F or be in the next argument. */ | |
2533 | ||
2534 | case 'F': | |
2535 | if (*argrest == 0) | |
2536 | { | |
2537 | if(++i < argc) argrest = argv[i]; else | |
2538 | { badarg = TRUE; break; } | |
2539 | } | |
2540 | originator_name = argrest; | |
2fe1a124 | 2541 | sender_name_forced = TRUE; |
059ec3d9 PH |
2542 | break; |
2543 | ||
2544 | ||
2545 | /* -f: Set sender's address - this value is only actually used if Exim is | |
2546 | run by a trusted user, or if untrusted_set_sender is set and matches the | |
2547 | address, except that the null address can always be set by any user. The | |
2548 | test for this happens later, when the value given here is ignored when not | |
2549 | permitted. For an untrusted user, the actual sender is still put in Sender: | |
2550 | if it doesn't match the From: header (unless no_local_from_check is set). | |
2551 | The data can follow the -f or be in the next argument. The -r switch is an | |
2552 | obsolete form of -f but since there appear to be programs out there that | |
2553 | use anything that sendmail has ever supported, better accept it - the | |
2554 | synonymizing is done before the switch above. | |
2555 | ||
2556 | At this stage, we must allow domain literal addresses, because we don't | |
2557 | know what the setting of allow_domain_literals is yet. Ditto for trailing | |
2558 | dots and strip_trailing_dot. */ | |
2559 | ||
2560 | case 'f': | |
2561 | { | |
250b6871 | 2562 | int dummy_start, dummy_end; |
059ec3d9 PH |
2563 | uschar *errmess; |
2564 | if (*argrest == 0) | |
2565 | { | |
2566 | if (i+1 < argc) argrest = argv[++i]; else | |
2567 | { badarg = TRUE; break; } | |
2568 | } | |
2569 | if (*argrest == 0) | |
059ec3d9 | 2570 | sender_address = string_sprintf(""); /* Ensure writeable memory */ |
059ec3d9 PH |
2571 | else |
2572 | { | |
2573 | uschar *temp = argrest + Ustrlen(argrest) - 1; | |
2574 | while (temp >= argrest && isspace(*temp)) temp--; | |
2575 | if (temp >= argrest && *temp == '.') f_end_dot = TRUE; | |
2576 | allow_domain_literals = TRUE; | |
2577 | strip_trailing_dot = TRUE; | |
8c5d388a | 2578 | #ifdef SUPPORT_I18N |
250b6871 JH |
2579 | allow_utf8_domains = TRUE; |
2580 | #endif | |
2581 | sender_address = parse_extract_address(argrest, &errmess, | |
2582 | &dummy_start, &dummy_end, &sender_address_domain, TRUE); | |
8c5d388a | 2583 | #ifdef SUPPORT_I18N |
250b6871 JH |
2584 | message_smtputf8 = string_is_utf8(sender_address); |
2585 | allow_utf8_domains = FALSE; | |
2586 | #endif | |
059ec3d9 PH |
2587 | allow_domain_literals = FALSE; |
2588 | strip_trailing_dot = FALSE; | |
2589 | if (sender_address == NULL) | |
2590 | { | |
2591 | fprintf(stderr, "exim: bad -f address \"%s\": %s\n", argrest, errmess); | |
2592 | return EXIT_FAILURE; | |
2593 | } | |
2594 | } | |
2595 | sender_address_forced = TRUE; | |
2596 | } | |
2597 | break; | |
2598 | ||
a3fb9793 | 2599 | /* -G: sendmail invocation to specify that it's a gateway submission and |
f4ee74ac PP |
2600 | sendmail may complain about problems instead of fixing them. |
2601 | We make it equivalent to an ACL "control = suppress_local_fixups" and do | |
2602 | not at this time complain about problems. */ | |
059ec3d9 PH |
2603 | |
2604 | case 'G': | |
f4ee74ac | 2605 | flag_G = TRUE; |
059ec3d9 PH |
2606 | break; |
2607 | ||
2608 | /* -h: Set the hop count for an incoming message. Exim does not currently | |
2609 | support this; it always computes it by counting the Received: headers. | |
2610 | To put it in will require a change to the spool header file format. */ | |
2611 | ||
2612 | case 'h': | |
2613 | if (*argrest == 0) | |
2614 | { | |
2615 | if(++i < argc) argrest = argv[i]; else | |
2616 | { badarg = TRUE; break; } | |
2617 | } | |
2618 | if (!isdigit(*argrest)) badarg = TRUE; | |
2619 | break; | |
2620 | ||
2621 | ||
2622 | /* -i: Set flag so dot doesn't end non-SMTP input (same as -oi, seems | |
2623 | not to be documented for sendmail but mailx (at least) uses it) */ | |
2624 | ||
2625 | case 'i': | |
2626 | if (*argrest == 0) dot_ends = FALSE; else badarg = TRUE; | |
2627 | break; | |
2628 | ||
2629 | ||
a3fb9793 PP |
2630 | /* -L: set the identifier used for syslog; equivalent to setting |
2631 | syslog_processname in the config file, but needs to be an admin option. */ | |
2632 | ||
2633 | case 'L': | |
2634 | if (*argrest == '\0') | |
2635 | { | |
2636 | if(++i < argc) argrest = argv[i]; else | |
2637 | { badarg = TRUE; break; } | |
2638 | } | |
2639 | sz = Ustrlen(argrest); | |
2640 | if (sz > 32) | |
2641 | { | |
2642 | fprintf(stderr, "exim: the -L syslog name is too long: \"%s\"\n", argrest); | |
2643 | return EXIT_FAILURE; | |
2644 | } | |
2645 | if (sz < 1) | |
2646 | { | |
2647 | fprintf(stderr, "exim: the -L syslog name is too short\n"); | |
2648 | return EXIT_FAILURE; | |
2649 | } | |
2650 | cmdline_syslog_name = argrest; | |
2651 | break; | |
2652 | ||
059ec3d9 PH |
2653 | case 'M': |
2654 | receiving_message = FALSE; | |
2655 | ||
2656 | /* -MC: continue delivery of another message via an existing open | |
2657 | file descriptor. This option is used for an internal call by the | |
2658 | smtp transport when there is a pending message waiting to go to an | |
2659 | address to which it has got a connection. Five subsequent arguments are | |
2660 | required: transport name, host name, IP address, sequence number, and | |
2661 | message_id. Transports may decline to create new processes if the sequence | |
2662 | number gets too big. The channel is stdin. This (-MC) must be the last | |
2663 | argument. There's a subsequent check that the real-uid is privileged. | |
2664 | ||
2665 | If we are running in the test harness. delay for a bit, to let the process | |
2666 | that set this one up complete. This makes for repeatability of the logging, | |
2667 | etc. output. */ | |
2668 | ||
2669 | if (Ustrcmp(argrest, "C") == 0) | |
2670 | { | |
41c7c167 PH |
2671 | union sockaddr_46 interface_sock; |
2672 | EXIM_SOCKLEN_T size = sizeof(interface_sock); | |
2673 | ||
059ec3d9 PH |
2674 | if (argc != i + 6) |
2675 | { | |
2676 | fprintf(stderr, "exim: too many or too few arguments after -MC\n"); | |
2677 | return EXIT_FAILURE; | |
2678 | } | |
2679 | ||
2680 | if (msg_action_arg >= 0) | |
2681 | { | |
2682 | fprintf(stderr, "exim: incompatible arguments\n"); | |
2683 | return EXIT_FAILURE; | |
2684 | } | |
2685 | ||
2686 | continue_transport = argv[++i]; | |
2687 | continue_hostname = argv[++i]; | |
2688 | continue_host_address = argv[++i]; | |
2689 | continue_sequence = Uatoi(argv[++i]); | |
2690 | msg_action = MSG_DELIVER; | |
2691 | msg_action_arg = ++i; | |
2692 | forced_delivery = TRUE; | |
2693 | queue_run_pid = passed_qr_pid; | |
2694 | queue_run_pipe = passed_qr_pipe; | |
2695 | ||
2696 | if (!mac_ismsgid(argv[i])) | |
2697 | { | |
2698 | fprintf(stderr, "exim: malformed message id %s after -MC option\n", | |
2699 | argv[i]); | |
2700 | return EXIT_FAILURE; | |
2701 | } | |
2702 | ||
41c7c167 PH |
2703 | /* Set up $sending_ip_address and $sending_port */ |
2704 | ||
2705 | if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock), | |
2706 | &size) == 0) | |
2707 | sending_ip_address = host_ntoa(-1, &interface_sock, NULL, | |
2708 | &sending_port); | |
2709 | else | |
2710 | { | |
2711 | fprintf(stderr, "exim: getsockname() failed after -MC option: %s\n", | |
2712 | strerror(errno)); | |
2713 | return EXIT_FAILURE; | |
2714 | } | |
2715 | ||
059ec3d9 PH |
2716 | if (running_in_test_harness) millisleep(500); |
2717 | break; | |
2718 | } | |
2719 | ||
2d14f397 JH |
2720 | else if (*argrest == 'C' && argrest[1] && !argrest[2]) |
2721 | { | |
2722 | switch(argrest[1]) | |
2723 | { | |
059ec3d9 PH |
2724 | /* -MCA: set the smtp_authenticated flag; this is useful only when it |
2725 | precedes -MC (see above). The flag indicates that the host to which | |
2726 | Exim is connected has accepted an AUTH sequence. */ | |
2727 | ||
2d14f397 | 2728 | case 'A': smtp_authenticated = TRUE; break; |
059ec3d9 | 2729 | |
6c1c3d1d WB |
2730 | /* -MCD: set the smtp_use_dsn flag; this indicates that the host |
2731 | that exim is connected to supports the esmtp extension DSN */ | |
28b3821f | 2732 | |
2d14f397 | 2733 | case 'D': smtp_peer_options |= PEER_OFFERED_DSN; break; |
6c1c3d1d | 2734 | |
e37f8a84 | 2735 | /* -MCG: set the queue name, to a non-default value */ |
28b3821f | 2736 | |
2d14f397 JH |
2737 | case 'G': if (++i < argc) queue_name = string_copy(argv[i]); |
2738 | else badarg = TRUE; | |
2739 | break; | |
2740 | ||
2741 | /* -MCK: the peer offered CHUNKING. Must precede -MC */ | |
2742 | ||
2743 | case 'K': smtp_peer_options |= PEER_OFFERED_CHUNKING; break; | |
28b3821f | 2744 | |
059ec3d9 PH |
2745 | /* -MCP: set the smtp_use_pipelining flag; this is useful only when |
2746 | it preceded -MC (see above) */ | |
2747 | ||
2d14f397 | 2748 | case 'P': smtp_peer_options |= PEER_OFFERED_PIPE; break; |
059ec3d9 PH |
2749 | |
2750 | /* -MCQ: pass on the pid of the queue-running process that started | |
2751 | this chain of deliveries and the fd of its synchronizing pipe; this | |
2752 | is useful only when it precedes -MC (see above) */ | |
2753 | ||
2d14f397 JH |
2754 | case 'Q': if (++i < argc) passed_qr_pid = (pid_t)(Uatol(argv[i])); |
2755 | else badarg = TRUE; | |
2756 | if (++i < argc) passed_qr_pipe = (int)(Uatol(argv[i])); | |
2757 | else badarg = TRUE; | |
2758 | break; | |
059ec3d9 PH |
2759 | |
2760 | /* -MCS: set the smtp_use_size flag; this is useful only when it | |
2761 | precedes -MC (see above) */ | |
2762 | ||
2d14f397 | 2763 | case 'S': smtp_peer_options |= PEER_OFFERED_SIZE; break; |
059ec3d9 | 2764 | |
2d14f397 | 2765 | #ifdef SUPPORT_TLS |
059ec3d9 PH |
2766 | /* -MCT: set the tls_offered flag; this is useful only when it |
2767 | precedes -MC (see above). The flag indicates that the host to which | |
2768 | Exim is connected has offered TLS support. */ | |
2769 | ||
2d14f397 JH |
2770 | case 'T': smtp_peer_options |= PEER_OFFERED_TLS; break; |
2771 | #endif | |
2772 | ||
2773 | default: badarg = TRUE; break; | |
2774 | } | |
2775 | break; | |
059ec3d9 | 2776 | } |
059ec3d9 PH |
2777 | |
2778 | /* -M[x]: various operations on the following list of message ids: | |
2779 | -M deliver the messages, ignoring next retry times and thawing | |
2780 | -Mc deliver the messages, checking next retry times, no thawing | |
2781 | -Mf freeze the messages | |
2782 | -Mg give up on the messages | |
2783 | -Mt thaw the messages | |
2784 | -Mrm remove the messages | |
2785 | In the above cases, this must be the last option. There are also the | |
2786 | following options which are followed by a single message id, and which | |
2787 | act on that message. Some of them use the "recipient" addresses as well. | |
2788 | -Mar add recipient(s) | |
2789 | -Mmad mark all recipients delivered | |
2790 | -Mmd mark recipients(s) delivered | |
2791 | -Mes edit sender | |
0ef732d9 | 2792 | -Mset load a message for use with -be |
059ec3d9 | 2793 | -Mvb show body |
a96603a0 | 2794 | -Mvc show copy (of whole message, in RFC 2822 format) |
059ec3d9 PH |
2795 | -Mvh show header |
2796 | -Mvl show log | |
2797 | */ | |
2798 | ||
2799 | else if (*argrest == 0) | |
2800 | { | |
2801 | msg_action = MSG_DELIVER; | |
2802 | forced_delivery = deliver_force_thaw = TRUE; | |
2803 | } | |
2804 | else if (Ustrcmp(argrest, "ar") == 0) | |
2805 | { | |
2806 | msg_action = MSG_ADD_RECIPIENT; | |
2807 | one_msg_action = TRUE; | |
2808 | } | |
2809 | else if (Ustrcmp(argrest, "c") == 0) msg_action = MSG_DELIVER; | |
2810 | else if (Ustrcmp(argrest, "es") == 0) | |
2811 | { | |
2812 | msg_action = MSG_EDIT_SENDER; | |
2813 | one_msg_action = TRUE; | |
2814 | } | |
2815 | else if (Ustrcmp(argrest, "f") == 0) msg_action = MSG_FREEZE; | |
2816 | else if (Ustrcmp(argrest, "g") == 0) | |
2817 | { | |
2818 | msg_action = MSG_DELIVER; | |
2819 | deliver_give_up = TRUE; | |
2820 | } | |
2821 | else if (Ustrcmp(argrest, "mad") == 0) | |
2822 | { | |
2823 | msg_action = MSG_MARK_ALL_DELIVERED; | |
2824 | } | |
2825 | else if (Ustrcmp(argrest, "md") == 0) | |
2826 | { | |
2827 | msg_action = MSG_MARK_DELIVERED; | |
2828 | one_msg_action = TRUE; | |
2829 | } | |
2830 | else if (Ustrcmp(argrest, "rm") == 0) msg_action = MSG_REMOVE; | |
0ef732d9 PH |
2831 | else if (Ustrcmp(argrest, "set") == 0) |
2832 | { | |
2833 | msg_action = MSG_LOAD; | |
2834 | one_msg_action = TRUE; | |
2835 | } | |
059ec3d9 PH |
2836 | else if (Ustrcmp(argrest, "t") == 0) msg_action = MSG_THAW; |
2837 | else if (Ustrcmp(argrest, "vb") == 0) | |
2838 | { | |
2839 | msg_action = MSG_SHOW_BODY; | |
2840 | one_msg_action = TRUE; | |
2841 | } | |
a96603a0 PH |
2842 | else if (Ustrcmp(argrest, "vc") == 0) |
2843 | { | |
2844 | msg_action = MSG_SHOW_COPY; | |
2845 | one_msg_action = TRUE; | |
2846 | } | |
059ec3d9 PH |
2847 | else if (Ustrcmp(argrest, "vh") == 0) |
2848 | { | |
2849 | msg_action = MSG_SHOW_HEADER; | |
2850 | one_msg_action = TRUE; | |
2851 | } | |
2852 | else if (Ustrcmp(argrest, "vl") == 0) | |
2853 | { | |
2854 | msg_action = MSG_SHOW_LOG; | |
2855 | one_msg_action = TRUE; | |
2856 | } | |
2857 | else { badarg = TRUE; break; } | |
2858 | ||
2859 | /* All the -Mxx options require at least one message id. */ | |
2860 | ||
2861 | msg_action_arg = i + 1; | |
2862 | if (msg_action_arg >= argc) | |
2863 | { | |
2864 | fprintf(stderr, "exim: no message ids given after %s option\n", arg); | |
2865 | return EXIT_FAILURE; | |
2866 | } | |
2867 | ||
2868 | /* Some require only message ids to follow */ | |
2869 | ||
2870 | if (!one_msg_action) | |
2871 | { | |
2872 | int j; | |
2873 | for (j = msg_action_arg; j < argc; j++) if (!mac_ismsgid(argv[j])) | |
2874 | { | |
2875 | fprintf(stderr, "exim: malformed message id %s after %s option\n", | |
2876 | argv[j], arg); | |
2877 | return EXIT_FAILURE; | |
2878 | } | |
2879 | goto END_ARG; /* Remaining args are ids */ | |
2880 | } | |
2881 | ||
2882 | /* Others require only one message id, possibly followed by addresses, | |
2883 | which will be handled as normal arguments. */ | |
2884 | ||
2885 | else | |
2886 | { | |
2887 | if (!mac_ismsgid(argv[msg_action_arg])) | |
2888 | { | |
2889 | fprintf(stderr, "exim: malformed message id %s after %s option\n", | |
2890 | argv[msg_action_arg], arg); | |
2891 | return EXIT_FAILURE; | |
2892 | } | |
2893 | i++; | |
2894 | } | |
2895 | break; | |
2896 | ||
2897 | ||
2898 | /* Some programs seem to call the -om option without the leading o; | |
2899 | for sendmail it askes for "me too". Exim always does this. */ | |
2900 | ||
2901 | case 'm': | |
2902 | if (*argrest != 0) badarg = TRUE; | |
2903 | break; | |
2904 | ||
2905 | ||
2906 | /* -N: don't do delivery - a debugging option that stops transports doing | |
2907 | their thing. It implies debugging at the D_v level. */ | |
2908 | ||
2909 | case 'N': | |
2910 | if (*argrest == 0) | |
2911 | { | |
2912 | dont_deliver = TRUE; | |
2913 | debug_selector |= D_v; | |
2914 | debug_file = stderr; | |
2915 | } | |
2916 | else badarg = TRUE; | |
2917 | break; | |
2918 | ||
2919 | ||
12f69989 PP |
2920 | /* -n: This means "don't alias" in sendmail, apparently. |
2921 | For normal invocations, it has no effect. | |
2922 | It may affect some other options. */ | |
059ec3d9 PH |
2923 | |
2924 | case 'n': | |
12f69989 | 2925 | flag_n = TRUE; |
059ec3d9 PH |
2926 | break; |
2927 | ||
2928 | /* -O: Just ignore it. In sendmail, apparently -O option=value means set | |
2929 | option to the specified value. This form uses long names. We need to handle | |
2930 | -O option=value and -Ooption=value. */ | |
2931 | ||
2932 | case 'O': | |
2933 | if (*argrest == 0) | |
2934 | { | |
2935 | if (++i >= argc) | |
2936 | { | |
2937 | fprintf(stderr, "exim: string expected after -O\n"); | |
2938 | exit(EXIT_FAILURE); | |
2939 | } | |
2940 | } | |
2941 | break; | |
2942 | ||
2943 | case 'o': | |
2944 | ||
2945 | /* -oA: Set an argument for the bi command (sendmail's "alternate alias | |
2946 | file" option). */ | |
2947 | ||
2948 | if (*argrest == 'A') | |
2949 | { | |
2950 | alias_arg = argrest + 1; | |
2951 | if (alias_arg[0] == 0) | |
2952 | { | |
2953 | if (i+1 < argc) alias_arg = argv[++i]; else | |
2954 | { | |
2955 | fprintf(stderr, "exim: string expected after -oA\n"); | |
2956 | exit(EXIT_FAILURE); | |
2957 | } | |
2958 | } | |
2959 | } | |
2960 | ||
2961 | /* -oB: Set a connection message max value for remote deliveries */ | |
2962 | ||
2963 | else if (*argrest == 'B') | |
2964 | { | |
2965 | uschar *p = argrest + 1; | |
2966 | if (p[0] == 0) | |
2967 | { | |
2968 | if (i+1 < argc && isdigit((argv[i+1][0]))) p = argv[++i]; else | |
2969 | { | |
2970 | connection_max_messages = 1; | |
2971 | p = NULL; | |
2972 | } | |
2973 | } | |
2974 | ||
2975 | if (p != NULL) | |
2976 | { | |
2977 | if (!isdigit(*p)) | |
2978 | { | |
2979 | fprintf(stderr, "exim: number expected after -oB\n"); | |
2980 | exit(EXIT_FAILURE); | |
2981 | } | |
2982 | connection_max_messages = Uatoi(p); | |
2983 | } | |
2984 | } | |
2985 | ||
2986 | /* -odb: background delivery */ | |
2987 | ||
2988 | else if (Ustrcmp(argrest, "db") == 0) | |
2989 | { | |
2990 | synchronous_delivery = FALSE; | |
2991 | arg_queue_only = FALSE; | |
2992 | queue_only_set = TRUE; | |
2993 | } | |
2994 | ||
2995 | /* -odf: foreground delivery (smail-compatible option); same effect as | |
2996 | -odi: interactive (synchronous) delivery (sendmail-compatible option) | |
2997 | */ | |
2998 | ||
2999 | else if (Ustrcmp(argrest, "df") == 0 || Ustrcmp(argrest, "di") == 0) | |
3000 | { | |
3001 | synchronous_delivery = TRUE; | |
3002 | arg_queue_only = FALSE; | |
3003 | queue_only_set = TRUE; | |
3004 | } | |
3005 | ||
3006 | /* -odq: queue only */ | |
3007 | ||
3008 | else if (Ustrcmp(argrest, "dq") == 0) | |
3009 | { | |
3010 | synchronous_delivery = FALSE; | |
3011 | arg_queue_only = TRUE; | |
3012 | queue_only_set = TRUE; | |
3013 | } | |
3014 | ||
3015 | /* -odqs: queue SMTP only - do local deliveries and remote routing, | |
3016 | but no remote delivery */ | |
3017 | ||
3018 | else if (Ustrcmp(argrest, "dqs") == 0) | |
3019 | { | |
3020 | queue_smtp = TRUE; | |
3021 | arg_queue_only = FALSE; | |
3022 | queue_only_set = TRUE; | |
3023 | } | |
3024 | ||
3025 | /* -oex: Sendmail error flags. As these are also accepted without the | |
3026 | leading -o prefix, for compatibility with vacation and other callers, | |
3027 | they are handled with -e above. */ | |
3028 | ||
3029 | /* -oi: Set flag so dot doesn't end non-SMTP input (same as -i) | |
3030 | -oitrue: Another sendmail syntax for the same */ | |
3031 | ||
3032 | else if (Ustrcmp(argrest, "i") == 0 || | |
3033 | Ustrcmp(argrest, "itrue") == 0) | |
3034 | dot_ends = FALSE; | |
3035 | ||
3036 | /* -oM*: Set various characteristics for an incoming message; actually | |
3037 | acted on for trusted callers only. */ | |
3038 | ||
3039 | else if (*argrest == 'M') | |
3040 | { | |
3041 | if (i+1 >= argc) | |
3042 | { | |
3043 | fprintf(stderr, "exim: data expected after -o%s\n", argrest); | |
3044 | exit(EXIT_FAILURE); | |
3045 | } | |
3046 | ||
3047 | /* -oMa: Set sender host address */ | |
3048 | ||
3049 | if (Ustrcmp(argrest, "Ma") == 0) sender_host_address = argv[++i]; | |
3050 | ||
3051 | /* -oMaa: Set authenticator name */ | |
3052 | ||
3053 | else if (Ustrcmp(argrest, "Maa") == 0) | |
3054 | sender_host_authenticated = argv[++i]; | |
3055 | ||
3056 | /* -oMas: setting authenticated sender */ | |
3057 | ||
3058 | else if (Ustrcmp(argrest, "Mas") == 0) authenticated_sender = argv[++i]; | |
3059 | ||
3060 | /* -oMai: setting authenticated id */ | |
3061 | ||
3062 | else if (Ustrcmp(argrest, "Mai") == 0) authenticated_id = argv[++i]; | |
3063 | ||
3064 | /* -oMi: Set incoming interface address */ | |
3065 | ||
3066 | else if (Ustrcmp(argrest, "Mi") == 0) interface_address = argv[++i]; | |
3067 | ||
d2af03f4 HS |
3068 | /* -oMm: Message reference */ |
3069 | ||
3070 | else if (Ustrcmp(argrest, "Mm") == 0) | |
3071 | { | |
3072 | if (!mac_ismsgid(argv[i+1])) | |
3073 | { | |
3074 | fprintf(stderr,"-oMm must be a valid message ID\n"); | |
3075 | exit(EXIT_FAILURE); | |
3076 | } | |
3077 | if (!trusted_config) | |
3078 | { | |
3079 | fprintf(stderr,"-oMm must be called by a trusted user/config\n"); | |
3080 | exit(EXIT_FAILURE); | |
3081 | } | |
3082 | message_reference = argv[++i]; | |
3083 | } | |
3084 | ||
059ec3d9 PH |
3085 | /* -oMr: Received protocol */ |
3086 | ||
3087 | else if (Ustrcmp(argrest, "Mr") == 0) received_protocol = argv[++i]; | |
3088 | ||
3089 | /* -oMs: Set sender host name */ | |
3090 | ||
3091 | else if (Ustrcmp(argrest, "Ms") == 0) sender_host_name = argv[++i]; | |
3092 | ||
3093 | /* -oMt: Set sender ident */ | |
3094 | ||
33d73e3b PH |
3095 | else if (Ustrcmp(argrest, "Mt") == 0) |
3096 | { | |
3097 | sender_ident_set = TRUE; | |
3098 | sender_ident = argv[++i]; | |
3099 | } | |
059ec3d9 PH |
3100 | |
3101 | /* Else a bad argument */ | |
3102 | ||
3103 | else | |
3104 | { | |
3105 | badarg = TRUE; | |
3106 | break; | |
3107 | } | |
3108 | } | |
3109 | ||
3110 | /* -om: Me-too flag for aliases. Exim always does this. Some programs | |
3111 | seem to call this as -m (undocumented), so that is also accepted (see | |
3112 | above). */ | |
3113 | ||
3114 | else if (Ustrcmp(argrest, "m") == 0) {} | |
3115 | ||
3116 | /* -oo: An ancient flag for old-style addresses which still seems to | |
3117 | crop up in some calls (see in SCO). */ | |
3118 | ||
3119 | else if (Ustrcmp(argrest, "o") == 0) {} | |
3120 | ||
3121 | /* -oP <name>: set pid file path for daemon */ | |
3122 | ||
3123 | else if (Ustrcmp(argrest, "P") == 0) | |
3124 | override_pid_file_path = argv[++i]; | |
3125 | ||
3126 | /* -or <n>: set timeout for non-SMTP acceptance | |
3127 | -os <n>: set timeout for SMTP acceptance */ | |
3128 | ||
3129 | else if (*argrest == 'r' || *argrest == 's') | |
3130 | { | |
3131 | int *tp = (*argrest == 'r')? | |
3132 | &arg_receive_timeout : &arg_smtp_receive_timeout; | |
3133 | if (argrest[1] == 0) | |
3134 | { | |
3135 | if (i+1 < argc) *tp= readconf_readtime(argv[++i], 0, FALSE); | |
3136 | } | |
3137 | else *tp = readconf_readtime(argrest + 1, 0, FALSE); | |
3138 | if (*tp < 0) | |
3139 | { | |
3140 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); | |
3141 | exit(EXIT_FAILURE); | |
3142 | } | |
3143 | } | |
3144 | ||
3145 | /* -oX <list>: Override local_interfaces and/or default daemon ports */ | |
3146 | ||
3147 | else if (Ustrcmp(argrest, "X") == 0) | |
3148 | override_local_interfaces = argv[++i]; | |
3149 | ||
3150 | /* Unknown -o argument */ | |
3151 | ||
3152 | else badarg = TRUE; | |
3153 | break; | |
3154 | ||
3155 | ||
3156 | /* -ps: force Perl startup; -pd force delayed Perl startup */ | |
3157 | ||
3158 | case 'p': | |
3159 | #ifdef EXIM_PERL | |
3160 | if (*argrest == 's' && argrest[1] == 0) | |
3161 | { | |
3162 | perl_start_option = 1; | |
3163 | break; | |
3164 | } | |
3165 | if (*argrest == 'd' && argrest[1] == 0) | |
3166 | { | |
3167 | perl_start_option = -1; | |
3168 | break; | |
3169 | } | |
3170 | #endif | |
3171 | ||
3172 | /* -panythingelse is taken as the Sendmail-compatible argument -prval:sval, | |
3173 | which sets the host protocol and host name */ | |
3174 | ||
3175 | if (*argrest == 0) | |
3176 | { | |
3177 | if (i+1 < argc) argrest = argv[++i]; else | |
3178 | { badarg = TRUE; break; } | |
3179 | } | |
3180 | ||
3181 | if (*argrest != 0) | |
3182 | { | |
3183 | uschar *hn = Ustrchr(argrest, ':'); | |
3184 | if (hn == NULL) | |
3185 | { | |
3186 | received_protocol = argrest; | |
3187 | } | |
3188 | else | |
3189 | { | |
3190 | received_protocol = string_copyn(argrest, hn - argrest); | |
3191 | sender_host_name = hn + 1; | |
3192 | } | |
3193 | } | |
3194 | break; | |
3195 | ||
3196 | ||
3197 | case 'q': | |
3198 | receiving_message = FALSE; | |
3cc66b45 PH |
3199 | if (queue_interval >= 0) |
3200 | { | |
3201 | fprintf(stderr, "exim: -q specified more than once\n"); | |
3202 | exit(EXIT_FAILURE); | |
3203 | } | |
059ec3d9 PH |
3204 | |
3205 | /* -qq...: Do queue runs in a 2-stage manner */ | |
3206 | ||
3207 | if (*argrest == 'q') | |
3208 | { | |
3209 | queue_2stage = TRUE; | |
3210 | argrest++; | |
3211 | } | |
3212 | ||
3213 | /* -qi...: Do only first (initial) deliveries */ | |
3214 | ||
3215 | if (*argrest == 'i') | |
3216 | { | |
3217 | queue_run_first_delivery = TRUE; | |
3218 | argrest++; | |
3219 | } | |
3220 | ||
3221 | /* -qf...: Run the queue, forcing deliveries | |
3222 | -qff..: Ditto, forcing thawing as well */ | |
3223 | ||
3224 | if (*argrest == 'f') | |
3225 | { | |
3226 | queue_run_force = TRUE; | |
55e70e76 | 3227 | if (*++argrest == 'f') |
059ec3d9 PH |
3228 | { |
3229 | deliver_force_thaw = TRUE; | |
3230 | argrest++; | |
3231 | } | |
3232 | } | |
3233 | ||
3234 | /* -q[f][f]l...: Run the queue only on local deliveries */ | |
3235 | ||
3236 | if (*argrest == 'l') | |
3237 | { | |
3238 | queue_run_local = TRUE; | |
3239 | argrest++; | |
3240 | } | |
3241 | ||
55e70e76 | 3242 | /* -q[f][f][l][G<name>]... Work on the named queue */ |
28b3821f JH |
3243 | |
3244 | if (*argrest == 'G') | |
3245 | { | |
fa665e0b JH |
3246 | int i; |
3247 | for (argrest++, i = 0; argrest[i] && argrest[i] != '/'; ) i++; | |
3248 | queue_name = string_copyn(argrest, i); | |
3249 | argrest += i; | |
3250 | if (*argrest == '/') argrest++; | |
28b3821f JH |
3251 | } |
3252 | ||
3253 | /* -q[f][f][l][G<name>]: Run the queue, optionally forced, optionally local | |
3254 | only, optionally named, optionally starting from a given message id. */ | |
059ec3d9 PH |
3255 | |
3256 | if (*argrest == 0 && | |
3257 | (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1]))) | |
3258 | { | |
3259 | queue_interval = 0; | |
3260 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3261 | start_queue_run_id = argv[++i]; | |
3262 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3263 | stop_queue_run_id = argv[++i]; | |
3264 | } | |
3265 | ||
fa665e0b JH |
3266 | /* -q[f][f][l][G<name>/]<n>: Run the queue at regular intervals, optionally |
3267 | forced, optionally local only, optionally named. */ | |
059ec3d9 | 3268 | |
55e70e76 JH |
3269 | else if ((queue_interval = readconf_readtime(*argrest ? argrest : argv[++i], |
3270 | 0, FALSE)) <= 0) | |
059ec3d9 | 3271 | { |
55e70e76 JH |
3272 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); |
3273 | exit(EXIT_FAILURE); | |
059ec3d9 PH |
3274 | } |
3275 | break; | |
3276 | ||
3277 | ||
3278 | case 'R': /* Synonymous with -qR... */ | |
3279 | receiving_message = FALSE; | |
3280 | ||
3281 | /* -Rf: As -R (below) but force all deliveries, | |
3282 | -Rff: Ditto, but also thaw all frozen messages, | |
3283 | -Rr: String is regex | |
3284 | -Rrf: Regex and force | |
3285 | -Rrff: Regex and force and thaw | |
3286 | ||
3287 | in all cases provided there are no further characters in this | |
3288 | argument. */ | |
3289 | ||
3290 | if (*argrest != 0) | |
3291 | { | |
3292 | int i; | |
55e70e76 | 3293 | for (i = 0; i < nelem(rsopts); i++) |
059ec3d9 PH |
3294 | if (Ustrcmp(argrest, rsopts[i]) == 0) |
3295 | { | |
3296 | if (i != 2) queue_run_force = TRUE; | |
3297 | if (i >= 2) deliver_selectstring_regex = TRUE; | |
3298 | if (i == 1 || i == 4) deliver_force_thaw = TRUE; | |
3299 | argrest += Ustrlen(rsopts[i]); | |
3300 | } | |
059ec3d9 PH |
3301 | } |
3302 | ||
3303 | /* -R: Set string to match in addresses for forced queue run to | |
3304 | pick out particular messages. */ | |
3305 | ||
55e70e76 JH |
3306 | if (*argrest) |
3307 | deliver_selectstring = argrest; | |
3308 | else if (i+1 < argc) | |
3309 | deliver_selectstring = argv[++i]; | |
3310 | else | |
059ec3d9 | 3311 | { |
55e70e76 JH |
3312 | fprintf(stderr, "exim: string expected after -R\n"); |
3313 | exit(EXIT_FAILURE); | |
059ec3d9 | 3314 | } |
059ec3d9 PH |
3315 | break; |
3316 | ||
3317 | ||
3318 | /* -r: an obsolete synonym for -f (see above) */ | |
3319 | ||
3320 | ||
3321 | /* -S: Like -R but works on sender. */ | |
3322 | ||
3323 | case 'S': /* Synonymous with -qS... */ | |
3324 | receiving_message = FALSE; | |
3325 | ||
3326 | /* -Sf: As -S (below) but force all deliveries, | |
3327 | -Sff: Ditto, but also thaw all frozen messages, | |
3328 | -Sr: String is regex | |
3329 | -Srf: Regex and force | |
3330 | -Srff: Regex and force and thaw | |
3331 | ||
3332 | in all cases provided there are no further characters in this | |
3333 | argument. */ | |
3334 | ||
55e70e76 | 3335 | if (*argrest) |
059ec3d9 PH |
3336 | { |
3337 | int i; | |
55e70e76 | 3338 | for (i = 0; i < nelem(rsopts); i++) |
059ec3d9 PH |
3339 | if (Ustrcmp(argrest, rsopts[i]) == 0) |
3340 | { | |
3341 | if (i != 2) queue_run_force = TRUE; | |
3342 | if (i >= 2) deliver_selectstring_sender_regex = TRUE; | |
3343 | if (i == 1 || i == 4) deliver_force_thaw = TRUE; | |
3344 | argrest += Ustrlen(rsopts[i]); | |
3345 | } | |
059ec3d9 PH |
3346 | } |
3347 | ||
3348 | /* -S: Set string to match in addresses for forced queue run to | |
3349 | pick out particular messages. */ | |
3350 | ||
55e70e76 JH |
3351 | if (*argrest) |
3352 | deliver_selectstring_sender = argrest; | |
3353 | else if (i+1 < argc) | |
3354 | deliver_selectstring_sender = argv[++i]; | |
3355 | else | |
059ec3d9 | 3356 | { |
55e70e76 JH |
3357 | fprintf(stderr, "exim: string expected after -S\n"); |
3358 | exit(EXIT_FAILURE); | |
059ec3d9 | 3359 | } |
059ec3d9 PH |
3360 | break; |
3361 | ||
3362 | /* -Tqt is an option that is exclusively for use by the testing suite. | |
3363 | It is not recognized in other circumstances. It allows for the setting up | |
3364 | of explicit "queue times" so that various warning/retry things can be | |
3365 | tested. Otherwise variability of clock ticks etc. cause problems. */ | |
3366 | ||
3367 | case 'T': | |
3368 | if (running_in_test_harness && Ustrcmp(argrest, "qt") == 0) | |
3369 | fudged_queue_times = argv[++i]; | |
3370 | else badarg = TRUE; | |
3371 | break; | |
3372 | ||
3373 | ||
3374 | /* -t: Set flag to extract recipients from body of message. */ | |
3375 | ||
3376 | case 't': | |
3377 | if (*argrest == 0) extract_recipients = TRUE; | |
3378 | ||
3379 | /* -ti: Set flag to extract recipients from body of message, and also | |
3380 | specify that dot does not end the message. */ | |
3381 | ||
3382 | else if (Ustrcmp(argrest, "i") == 0) | |
3383 | { | |
3384 | extract_recipients = TRUE; | |
3385 | dot_ends = FALSE; | |
3386 | } | |
3387 | ||
3388 | /* -tls-on-connect: don't wait for STARTTLS (for old clients) */ | |
3389 | ||
3390 | #ifdef SUPPORT_TLS | |
817d9f57 | 3391 | else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE; |
059ec3d9 PH |
3392 | #endif |
3393 | ||
3394 | else badarg = TRUE; | |
3395 | break; | |
3396 | ||
3397 | ||
3398 | /* -U: This means "initial user submission" in sendmail, apparently. The | |
3399 | doc claims that in future sendmail may refuse syntactically invalid | |
3400 | messages instead of fixing them. For the moment, we just ignore it. */ | |
3401 | ||
3402 | case 'U': | |
3403 | break; | |
3404 | ||
3405 | ||
3406 | /* -v: verify things - this is a very low-level debugging */ | |
3407 | ||
3408 | case 'v': | |
3409 | if (*argrest == 0) | |
3410 | { | |
3411 | debug_selector |= D_v; | |
3412 | debug_file = stderr; | |
3413 | } | |
3414 | else badarg = TRUE; | |
3415 | break; | |
3416 | ||
3417 | ||
3418 | /* -x: AIX uses this to indicate some fancy 8-bit character stuff: | |
3419 | ||
3420 | The -x flag tells the sendmail command that mail from a local | |
3421 | mail program has National Language Support (NLS) extended characters | |
3422 | in the body of the mail item. The sendmail command can send mail with | |
3423 | extended NLS characters across networks that normally corrupts these | |
3424 | 8-bit characters. | |
3425 | ||
3426 | As Exim is 8-bit clean, it just ignores this flag. */ | |
3427 | ||
3428 | case 'x': | |
3429 | if (*argrest != 0) badarg = TRUE; | |
3430 | break; | |
3431 | ||
a3fb9793 PP |
3432 | /* -X: in sendmail: takes one parameter, logfile, and sends debugging |
3433 | logs to that file. We swallow the parameter and otherwise ignore it. */ | |
3434 | ||
3435 | case 'X': | |
3436 | if (*argrest == '\0') | |
a3fb9793 PP |
3437 | if (++i >= argc) |
3438 | { | |
3439 | fprintf(stderr, "exim: string expected after -X\n"); | |
3440 | exit(EXIT_FAILURE); | |
3441 | } | |
0ad2e0fc JH |
3442 | break; |
3443 | ||
3444 | case 'z': | |
3445 | if (*argrest == '\0') | |
3446 | if (++i < argc) log_oneline = argv[i]; else | |
3447 | { | |
3448 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
3449 | exit(EXIT_FAILURE); | |
3450 | } | |
a3fb9793 PP |
3451 | break; |
3452 | ||
059ec3d9 PH |
3453 | /* All other initial characters are errors */ |
3454 | ||
3455 | default: | |
3456 | badarg = TRUE; | |
3457 | break; | |
3458 | } /* End of high-level switch statement */ | |
3459 | ||
3460 | /* Failed to recognize the option, or syntax error */ | |
3461 | ||
3462 | if (badarg) | |
3463 | { | |
3464 | fprintf(stderr, "exim abandoned: unknown, malformed, or incomplete " | |
3465 | "option %s\n", arg); | |
3466 | exit(EXIT_FAILURE); | |
3467 | } | |
3468 | } | |
3469 | ||
3470 | ||
3cc66b45 PH |
3471 | /* If -R or -S have been specified without -q, assume a single queue run. */ |
3472 | ||
55e70e76 JH |
3473 | if ( (deliver_selectstring || deliver_selectstring_sender) |
3474 | && queue_interval < 0) | |
3475 | queue_interval = 0; | |
3cc66b45 PH |
3476 | |
3477 | ||
059ec3d9 | 3478 | END_ARG: |
81ea09ca NM |
3479 | /* If usage_wanted is set we call the usage function - which never returns */ |
3480 | if (usage_wanted) exim_usage(called_as); | |
3481 | ||
3482 | /* Arguments have been processed. Check for incompatibilities. */ | |
059ec3d9 PH |
3483 | if (( |
3484 | (smtp_input || extract_recipients || recipients_arg < argc) && | |
3485 | (daemon_listen || queue_interval >= 0 || bi_option || | |
3486 | test_retry_arg >= 0 || test_rewrite_arg >= 0 || | |
f05da2e8 | 3487 | filter_test != FTEST_NONE || (msg_action_arg > 0 && !one_msg_action)) |
059ec3d9 PH |
3488 | ) || |
3489 | ( | |
3490 | msg_action_arg > 0 && | |
44915474 | 3491 | (daemon_listen || queue_interval > 0 || list_options || |
0ef732d9 PH |
3492 | (checking && msg_action != MSG_LOAD) || |
3493 | bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0) | |
059ec3d9 PH |
3494 | ) || |
3495 | ( | |
55e70e76 | 3496 | (daemon_listen || queue_interval > 0) && |
059ec3d9 | 3497 | (sender_address != NULL || list_options || list_queue || checking || |
0ef732d9 | 3498 | bi_option) |
059ec3d9 PH |
3499 | ) || |
3500 | ( | |
3501 | daemon_listen && queue_interval == 0 | |
3502 | ) || | |
3503 | ( | |
9ee44efb PP |
3504 | inetd_wait_mode && queue_interval >= 0 |
3505 | ) || | |
3506 | ( | |
059ec3d9 PH |
3507 | list_options && |
3508 | (checking || smtp_input || extract_recipients || | |
f05da2e8 | 3509 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3510 | ) || |
3511 | ( | |
3512 | verify_address_mode && | |
3513 | (address_test_mode || smtp_input || extract_recipients || | |
f05da2e8 | 3514 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3515 | ) || |
3516 | ( | |
3517 | address_test_mode && (smtp_input || extract_recipients || | |
f05da2e8 | 3518 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3519 | ) || |
3520 | ( | |
f05da2e8 | 3521 | smtp_input && (sender_address != NULL || filter_test != FTEST_NONE || |
059ec3d9 PH |
3522 | extract_recipients) |
3523 | ) || | |
3524 | ( | |
3525 | deliver_selectstring != NULL && queue_interval < 0 | |
328895cc PH |
3526 | ) || |
3527 | ( | |
3528 | msg_action == MSG_LOAD && | |
3529 | (!expansion_test || expansion_test_message != NULL) | |
059ec3d9 PH |
3530 | ) |
3531 | ) | |
3532 | { | |
3533 | fprintf(stderr, "exim: incompatible command-line options or arguments\n"); | |
3534 | exit(EXIT_FAILURE); | |
3535 | } | |
3536 | ||
3537 | /* If debugging is set up, set the file and the file descriptor to pass on to | |
3538 | child processes. It should, of course, be 2 for stderr. Also, force the daemon | |
3539 | to run in the foreground. */ | |
3540 | ||
3541 | if (debug_selector != 0) | |
3542 | { | |
3543 | debug_file = stderr; | |
3544 | debug_fd = fileno(debug_file); | |
3545 | background_daemon = FALSE; | |
3546 | if (running_in_test_harness) millisleep(100); /* lets caller finish */ | |
3547 | if (debug_selector != D_v) /* -v only doesn't show this */ | |
3548 | { | |
3549 | debug_printf("Exim version %s uid=%ld gid=%ld pid=%d D=%x\n", | |
3550 | version_string, (long int)real_uid, (long int)real_gid, (int)getpid(), | |
3551 | debug_selector); | |
6545de78 PP |
3552 | if (!version_printed) |
3553 | show_whats_supported(stderr); | |
059ec3d9 PH |
3554 | } |
3555 | } | |
3556 | ||
3557 | /* When started with root privilege, ensure that the limits on the number of | |
3558 | open files and the number of processes (where that is accessible) are | |
3559 | sufficiently large, or are unset, in case Exim has been called from an | |
3560 | environment where the limits are screwed down. Not all OS have the ability to | |
3561 | change some of these limits. */ | |
3562 | ||
3563 | if (unprivileged) | |
3564 | { | |
3565 | DEBUG(D_any) debug_print_ids(US"Exim has no root privilege:"); | |
3566 | } | |
3567 | else | |
3568 | { | |
3569 | struct rlimit rlp; | |
3570 | ||
3571 | #ifdef RLIMIT_NOFILE | |
3572 | if (getrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3573 | { | |
3574 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NOFILE) failed: %s", | |
3575 | strerror(errno)); | |
3576 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3577 | } | |
eb2c0248 PH |
3578 | |
3579 | /* I originally chose 1000 as a nice big number that was unlikely to | |
a494b1e1 PH |
3580 | be exceeded. It turns out that some older OS have a fixed upper limit of |
3581 | 256. */ | |
eb2c0248 | 3582 | |
059ec3d9 PH |
3583 | if (rlp.rlim_cur < 1000) |
3584 | { | |
3585 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3586 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
eb2c0248 | 3587 | { |
a494b1e1 PH |
3588 | rlp.rlim_cur = rlp.rlim_max = 256; |
3589 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3590 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NOFILE) failed: %s", | |
3591 | strerror(errno)); | |
eb2c0248 | 3592 | } |
059ec3d9 PH |
3593 | } |
3594 | #endif | |
3595 | ||
3596 | #ifdef RLIMIT_NPROC | |
3597 | if (getrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3598 | { | |
3599 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NPROC) failed: %s", | |
3600 | strerror(errno)); | |
3601 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3602 | } | |
3603 | ||
3604 | #ifdef RLIM_INFINITY | |
3605 | if (rlp.rlim_cur != RLIM_INFINITY && rlp.rlim_cur < 1000) | |
3606 | { | |
3607 | rlp.rlim_cur = rlp.rlim_max = RLIM_INFINITY; | |
3608 | #else | |
3609 | if (rlp.rlim_cur < 1000) | |
3610 | { | |
3611 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3612 | #endif | |
3613 | if (setrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3614 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NPROC) failed: %s", | |
3615 | strerror(errno)); | |
3616 | } | |
3617 | #endif | |
3618 | } | |
3619 | ||
3620 | /* Exim is normally entered as root (but some special configurations are | |
3621 | possible that don't do this). However, it always spins off sub-processes that | |
3622 | set their uid and gid as required for local delivery. We don't want to pass on | |
3623 | any extra groups that root may belong to, so we want to get rid of them all at | |
3624 | this point. | |
3625 | ||
3626 | We need to obey setgroups() at this stage, before possibly giving up root | |
3627 | privilege for a changed configuration file, but later on we might need to | |
3628 | check on the additional groups for the admin user privilege - can't do that | |
3629 | till after reading the config, which might specify the exim gid. Therefore, | |
3630 | save the group list here first. */ | |
3631 | ||
3632 | group_count = getgroups(NGROUPS_MAX, group_list); | |
cd59ab18 PP |
3633 | if (group_count < 0) |
3634 | { | |
3635 | fprintf(stderr, "exim: getgroups() failed: %s\n", strerror(errno)); | |
3636 | exit(EXIT_FAILURE); | |
3637 | } | |
059ec3d9 PH |
3638 | |
3639 | /* There is a fundamental difference in some BSD systems in the matter of | |
3640 | groups. FreeBSD and BSDI are known to be different; NetBSD and OpenBSD are | |
3641 | known not to be different. On the "different" systems there is a single group | |
3642 | list, and the first entry in it is the current group. On all other versions of | |
3643 | Unix there is a supplementary group list, which is in *addition* to the current | |
3644 | group. Consequently, to get rid of all extraneous groups on a "standard" system | |
3645 | you pass over 0 groups to setgroups(), while on a "different" system you pass | |
3646 | over a single group - the current group, which is always the first group in the | |
3647 | list. Calling setgroups() with zero groups on a "different" system results in | |
3648 | an error return. The following code should cope with both types of system. | |
3649 | ||
3650 | However, if this process isn't running as root, setgroups() can't be used | |
3651 | since you have to be root to run it, even if throwing away groups. Not being | |
3652 | root here happens only in some unusual configurations. We just ignore the | |
3653 | error. */ | |
3654 | ||
3655 | if (setgroups(0, NULL) != 0) | |
3656 | { | |
3657 | if (setgroups(1, group_list) != 0 && !unprivileged) | |
3658 | { | |
3659 | fprintf(stderr, "exim: setgroups() failed: %s\n", strerror(errno)); | |
3660 | exit(EXIT_FAILURE); | |
3661 | } | |
3662 | } | |
3663 | ||
3664 | /* If the configuration file name has been altered by an argument on the | |
3665 | command line (either a new file name or a macro definition) and the caller is | |
cd25e41d DW |
3666 | not root, or if this is a filter testing run, remove any setuid privilege the |
3667 | program has and run as the underlying user. | |
059ec3d9 | 3668 | |
cd25e41d DW |
3669 | The exim user is locked out of this, which severely restricts the use of -C |
3670 | for some purposes. | |
059ec3d9 PH |
3671 | |
3672 | Otherwise, set the real ids to the effective values (should be root unless run | |
3673 | from inetd, which it can either be root or the exim uid, if one is configured). | |
3674 | ||
3675 | There is a private mechanism for bypassing some of this, in order to make it | |
3676 | possible to test lots of configurations automatically, without having either to | |
3677 | recompile each time, or to patch in an actual configuration file name and other | |
3678 | values (such as the path name). If running in the test harness, pretend that | |
3679 | configuration file changes and macro definitions haven't happened. */ | |
3680 | ||
3681 | if (( /* EITHER */ | |
a7cbbf50 PP |
3682 | (!trusted_config || /* Config changed, or */ |
3683 | !macros_trusted()) && /* impermissible macros and */ | |
059ec3d9 | 3684 | real_uid != root_uid && /* Not root, and */ |
059ec3d9 PH |
3685 | !running_in_test_harness /* Not fudged */ |
3686 | ) || /* OR */ | |
3687 | expansion_test /* expansion testing */ | |
3688 | || /* OR */ | |
f05da2e8 | 3689 | filter_test != FTEST_NONE) /* Filter testing */ |
059ec3d9 PH |
3690 | { |
3691 | setgroups(group_count, group_list); | |
3692 | exim_setugid(real_uid, real_gid, FALSE, | |
3693 | US"-C, -D, -be or -bf forces real uid"); | |
3694 | removed_privilege = TRUE; | |
3695 | ||
3696 | /* In the normal case when Exim is called like this, stderr is available | |
3697 | and should be used for any logging information because attempts to write | |
3698 | to the log will usually fail. To arrange this, we unset really_exim. However, | |
3699 | if no stderr is available there is no point - we might as well have a go | |
b7487bce | 3700 | at the log (if it fails, syslog will be written). |
059ec3d9 | 3701 | |
b7487bce PP |
3702 | Note that if the invoker is Exim, the logs remain available. Messing with |
3703 | this causes unlogged successful deliveries. */ | |
3704 | ||
3705 | if ((log_stderr != NULL) && (real_uid != exim_uid)) | |
3706 | really_exim = FALSE; | |
059ec3d9 PH |
3707 | } |
3708 | ||
3709 | /* Privilege is to be retained for the moment. It may be dropped later, | |
3710 | depending on the job that this Exim process has been asked to do. For now, set | |
3711 | the real uid to the effective so that subsequent re-execs of Exim are done by a | |
3712 | privileged user. */ | |
3713 | ||
3714 | else exim_setugid(geteuid(), getegid(), FALSE, US"forcing real = effective"); | |
3715 | ||
f05da2e8 | 3716 | /* If testing a filter, open the file(s) now, before wasting time doing other |
059ec3d9 PH |
3717 | setups and reading the message. */ |
3718 | ||
f05da2e8 PH |
3719 | if ((filter_test & FTEST_SYSTEM) != 0) |
3720 | { | |
3721 | filter_sfd = Uopen(filter_test_sfile, O_RDONLY, 0); | |
3722 | if (filter_sfd < 0) | |
3723 | { | |
3724 | fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_sfile, | |
3725 | strerror(errno)); | |
3726 | return EXIT_FAILURE; | |
3727 | } | |
3728 | } | |
3729 | ||
3730 | if ((filter_test & FTEST_USER) != 0) | |
059ec3d9 | 3731 | { |
f05da2e8 PH |
3732 | filter_ufd = Uopen(filter_test_ufile, O_RDONLY, 0); |
3733 | if (filter_ufd < 0) | |
059ec3d9 | 3734 | { |
f05da2e8 | 3735 | fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_ufile, |
059ec3d9 PH |
3736 | strerror(errno)); |
3737 | return EXIT_FAILURE; | |
3738 | } | |
3739 | } | |
3740 | ||
8829633f PP |
3741 | /* Initialise lookup_list |
3742 | If debugging, already called above via version reporting. | |
3743 | In either case, we initialise the list of available lookups while running | |
3744 | as root. All dynamically modules are loaded from a directory which is | |
3745 | hard-coded into the binary and is code which, if not a module, would be | |
3746 | part of Exim already. Ability to modify the content of the directory | |
3747 | is equivalent to the ability to modify a setuid binary! | |
3748 | ||
3749 | This needs to happen before we read the main configuration. */ | |
3750 | init_lookup_list(); | |
3751 | ||
8c5d388a | 3752 | #ifdef SUPPORT_I18N |
9d4319df JH |
3753 | if (running_in_test_harness) smtputf8_advertise_hosts = NULL; |
3754 | #endif | |
3755 | ||
059ec3d9 PH |
3756 | /* Read the main runtime configuration data; this gives up if there |
3757 | is a failure. It leaves the configuration file open so that the subsequent | |
3de973a2 | 3758 | configuration data for delivery can be read if needed. |
059ec3d9 | 3759 | |
3de973a2 HSHR |
3760 | NOTE: immediatly after opening the configuration file we change the working |
3761 | directory to "/"! Later we change to $spool_directory. We do it there, because | |
3762 | during readconf_main() some expansion takes place already. */ | |
bc3c7bb7 | 3763 | |
3615fa9a | 3764 | /* Store the initial cwd before we change directories */ |
3ae121c9 | 3765 | if ((initial_cwd = os_getcwd(NULL, 0)) == NULL) |
fae3a611 HSHR |
3766 | { |
3767 | perror("exim: can't get the current working directory"); | |
3768 | exit(EXIT_FAILURE); | |
3769 | } | |
3615fa9a | 3770 | |
34e86e20 HSHR |
3771 | /* checking: |
3772 | -be[m] expansion test - | |
3773 | -b[fF] filter test new | |
3774 | -bh[c] host test - | |
3775 | -bmalware malware_test_file new | |
3776 | -brt retry test new | |
3777 | -brw rewrite test new | |
3778 | -bt address test - | |
3779 | -bv[s] address verify - | |
3780 | list_options: | |
3781 | -bP <option> (except -bP config, which sets list_config) | |
3782 | ||
3783 | If any of these options is set, we suppress warnings about configuration | |
3784 | issues (currently about tls_advertise_hosts and keep_environment not being | |
3785 | defined) */ | |
3786 | ||
3787 | readconf_main(checking || list_options); | |
059ec3d9 | 3788 | |
3de973a2 HSHR |
3789 | /* Now in directory "/" */ |
3790 | ||
bc3c7bb7 HSHR |
3791 | if (cleanup_environment() == FALSE) |
3792 | log_write(0, LOG_PANIC_DIE, "Can't cleanup environment"); | |
3793 | ||
3794 | ||
a3fb9793 PP |
3795 | /* If an action on specific messages is requested, or if a daemon or queue |
3796 | runner is being started, we need to know if Exim was called by an admin user. | |
3797 | This is the case if the real user is root or exim, or if the real group is | |
3798 | exim, or if one of the supplementary groups is exim or a group listed in | |
3799 | admin_groups. We don't fail all message actions immediately if not admin_user, | |
3800 | since some actions can be performed by non-admin users. Instead, set admin_user | |
3801 | for later interrogation. */ | |
3802 | ||
3803 | if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid) | |
3804 | admin_user = TRUE; | |
3805 | else | |
3806 | { | |
3807 | int i, j; | |
3808 | for (i = 0; i < group_count; i++) | |
3809 | { | |
3810 | if (group_list[i] == exim_gid) admin_user = TRUE; | |
3811 | else if (admin_groups != NULL) | |
3812 | { | |
3813 | for (j = 1; j <= (int)(admin_groups[0]); j++) | |
3814 | if (admin_groups[j] == group_list[i]) | |
3815 | { admin_user = TRUE; break; } | |
3816 | } | |
3817 | if (admin_user) break; | |
3818 | } | |
3819 | } | |
3820 | ||
3821 | /* Another group of privileged users are the trusted users. These are root, | |
3822 | exim, and any caller matching trusted_users or trusted_groups. Trusted callers | |
3823 | are permitted to specify sender_addresses with -f on the command line, and | |
3824 | other message parameters as well. */ | |
3825 | ||
3826 | if (real_uid == root_uid || real_uid == exim_uid) | |
3827 | trusted_caller = TRUE; | |
3828 | else | |
3829 | { | |
3830 | int i, j; | |
3831 | ||
3832 | if (trusted_users != NULL) | |
3833 | { | |
3834 | for (i = 1; i <= (int)(trusted_users[0]); i++) | |
3835 | if (trusted_users[i] == real_uid) | |
3836 | { trusted_caller = TRUE; break; } | |
3837 | } | |
3838 | ||
3839 | if (!trusted_caller && trusted_groups != NULL) | |
3840 | { | |
3841 | for (i = 1; i <= (int)(trusted_groups[0]); i++) | |
3842 | { | |
3843 | if (trusted_groups[i] == real_gid) | |
3844 | trusted_caller = TRUE; | |
3845 | else for (j = 0; j < group_count; j++) | |
3846 | { | |
3847 | if (trusted_groups[i] == group_list[j]) | |
3848 | { trusted_caller = TRUE; break; } | |
3849 | } | |
3850 | if (trusted_caller) break; | |
3851 | } | |
3852 | } | |
3853 | } | |
3854 | ||
059ec3d9 PH |
3855 | /* Handle the decoding of logging options. */ |
3856 | ||
6c6d6e48 | 3857 | decode_bits(log_selector, log_selector_size, log_notall, |
ed7f7860 | 3858 | log_selector_string, log_options, log_options_count, US"log", 0); |
059ec3d9 PH |
3859 | |
3860 | DEBUG(D_any) | |
3861 | { | |
6c6d6e48 | 3862 | int i; |
059ec3d9 | 3863 | debug_printf("configuration file is %s\n", config_main_filename); |
6c6d6e48 TF |
3864 | debug_printf("log selectors ="); |
3865 | for (i = 0; i < log_selector_size; i++) | |
3866 | debug_printf(" %08x", log_selector[i]); | |
3867 | debug_printf("\n"); | |
059ec3d9 PH |
3868 | } |
3869 | ||
3870 | /* If domain literals are not allowed, check the sender address that was | |
3871 | supplied with -f. Ditto for a stripped trailing dot. */ | |
3872 | ||
3873 | if (sender_address != NULL) | |
3874 | { | |
3875 | if (sender_address[sender_address_domain] == '[' && !allow_domain_literals) | |
3876 | { | |
3877 | fprintf(stderr, "exim: bad -f address \"%s\": domain literals not " | |
3878 | "allowed\n", sender_address); | |
3879 | return EXIT_FAILURE; | |
3880 | } | |
3881 | if (f_end_dot && !strip_trailing_dot) | |
3882 | { | |
3883 | fprintf(stderr, "exim: bad -f address \"%s.\": domain is malformed " | |
3884 | "(trailing dot not allowed)\n", sender_address); | |
3885 | return EXIT_FAILURE; | |
3886 | } | |
3887 | } | |
3888 | ||
a3fb9793 PP |
3889 | /* See if an admin user overrode our logging. */ |
3890 | ||
3891 | if (cmdline_syslog_name != NULL) | |
3892 | { | |
3893 | if (admin_user) | |
3894 | { | |
3895 | syslog_processname = cmdline_syslog_name; | |
3896 | log_file_path = string_copy(CUS"syslog"); | |
3897 | } | |
3898 | else | |
3899 | { | |
3900 | /* not a panic, non-privileged users should not be able to spam paniclog */ | |
3901 | fprintf(stderr, | |
3902 | "exim: you lack sufficient privilege to specify syslog process name\n"); | |
3903 | return EXIT_FAILURE; | |
3904 | } | |
3905 | } | |
3906 | ||
059ec3d9 PH |
3907 | /* Paranoia check of maximum lengths of certain strings. There is a check |
3908 | on the length of the log file path in log.c, which will come into effect | |
3909 | if there are any calls to write the log earlier than this. However, if we | |
3910 | get this far but the string is very long, it is better to stop now than to | |
3911 | carry on and (e.g.) receive a message and then have to collapse. The call to | |
3912 | log_write() from here will cause the ultimate panic collapse if the complete | |
3913 | file name exceeds the buffer length. */ | |
3914 | ||
3915 | if (Ustrlen(log_file_path) > 200) | |
3916 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3917 | "log_file_path is longer than 200 chars: aborting"); | |
3918 | ||
3919 | if (Ustrlen(pid_file_path) > 200) | |
3920 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3921 | "pid_file_path is longer than 200 chars: aborting"); | |
3922 | ||
3923 | if (Ustrlen(spool_directory) > 200) | |
3924 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3925 | "spool_directory is longer than 200 chars: aborting"); | |
3926 | ||
3927 | /* Length check on the process name given to syslog for its TAG field, | |
3928 | which is only permitted to be 32 characters or less. See RFC 3164. */ | |
3929 | ||
3930 | if (Ustrlen(syslog_processname) > 32) | |
3931 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3932 | "syslog_processname is longer than 32 chars: aborting"); | |
3933 | ||
0ad2e0fc JH |
3934 | if (log_oneline) |
3935 | { | |
3936 | if (admin_user) | |
3937 | { | |
3938 | log_write(0, LOG_MAIN, "%s", log_oneline); | |
3939 | return EXIT_SUCCESS; | |
3940 | } | |
3941 | else | |
3942 | return EXIT_FAILURE; | |
3943 | } | |
3944 | ||
059ec3d9 PH |
3945 | /* In some operating systems, the environment variable TMPDIR controls where |
3946 | temporary files are created; Exim doesn't use these (apart from when delivering | |
3947 | to MBX mailboxes), but called libraries such as DBM libraries may require them. | |
3948 | If TMPDIR is found in the environment, reset it to the value defined in the | |
8f3bfb82 HSHR |
3949 | EXIM_TMPDIR macro, if this macro is defined. For backward compatibility this |
3950 | macro may be called TMPDIR in old "Local/Makefile"s. It's converted to | |
3951 | EXIM_TMPDIR by the build scripts. | |
3952 | */ | |
059ec3d9 | 3953 | |
75286da3 | 3954 | #ifdef EXIM_TMPDIR |
059ec3d9 PH |
3955 | { |
3956 | uschar **p; | |
bc3c7bb7 | 3957 | if (environ) for (p = USS environ; *p != NULL; p++) |
059ec3d9 PH |
3958 | { |
3959 | if (Ustrncmp(*p, "TMPDIR=", 7) == 0 && | |
75286da3 | 3960 | Ustrcmp(*p+7, EXIM_TMPDIR) != 0) |
059ec3d9 | 3961 | { |
75286da3 AT |
3962 | uschar *newp = malloc(Ustrlen(EXIM_TMPDIR) + 8); |
3963 | sprintf(CS newp, "TMPDIR=%s", EXIM_TMPDIR); | |
059ec3d9 | 3964 | *p = newp; |
75286da3 | 3965 | DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", EXIM_TMPDIR); |
059ec3d9 PH |
3966 | } |
3967 | } | |
3968 | } | |
3969 | #endif | |
3970 | ||
3971 | /* Timezone handling. If timezone_string is "utc", set a flag to cause all | |
3972 | timestamps to be in UTC (gmtime() is used instead of localtime()). Otherwise, | |
3973 | we may need to get rid of a bogus timezone setting. This can arise when Exim is | |
3974 | called by a user who has set the TZ variable. This then affects the timestamps | |
3975 | in log files and in Received: headers, and any created Date: header lines. The | |
3976 | required timezone is settable in the configuration file, so nothing can be done | |
3977 | about this earlier - but hopefully nothing will normally be logged earlier than | |
3978 | this. We have to make a new environment if TZ is wrong, but don't bother if | |
3979 | timestamps_utc is set, because then all times are in UTC anyway. */ | |
3980 | ||
3981 | if (timezone_string != NULL && strcmpic(timezone_string, US"UTC") == 0) | |
3982 | { | |
3983 | timestamps_utc = TRUE; | |
3984 | } | |
3985 | else | |
3986 | { | |
3987 | uschar *envtz = US getenv("TZ"); | |
3988 | if ((envtz == NULL && timezone_string != NULL) || | |
3989 | (envtz != NULL && | |
3990 | (timezone_string == NULL || | |
3991 | Ustrcmp(timezone_string, envtz) != 0))) | |
3992 | { | |
3993 | uschar **p = USS environ; | |
3994 | uschar **new; | |
3995 | uschar **newp; | |
3996 | int count = 0; | |
bc3c7bb7 | 3997 | if (environ) while (*p++ != NULL) count++; |
059ec3d9 PH |
3998 | if (envtz == NULL) count++; |
3999 | newp = new = malloc(sizeof(uschar *) * (count + 1)); | |
bc3c7bb7 | 4000 | if (environ) for (p = USS environ; *p != NULL; p++) |
059ec3d9 PH |
4001 | { |
4002 | if (Ustrncmp(*p, "TZ=", 3) == 0) continue; | |
4003 | *newp++ = *p; | |
4004 | } | |
4005 | if (timezone_string != NULL) | |
4006 | { | |
4007 | *newp = malloc(Ustrlen(timezone_string) + 4); | |
4008 | sprintf(CS *newp++, "TZ=%s", timezone_string); | |
4009 | } | |
4010 | *newp = NULL; | |
4011 | environ = CSS new; | |
4012 | tzset(); | |
4013 | DEBUG(D_any) debug_printf("Reset TZ to %s: time is %s\n", timezone_string, | |
4014 | tod_stamp(tod_log)); | |
4015 | } | |
4016 | } | |
4017 | ||
4018 | /* Handle the case when we have removed the setuid privilege because of -C or | |
cd25e41d | 4019 | -D. This means that the caller of Exim was not root. |
059ec3d9 | 4020 | |
cd25e41d DW |
4021 | There is a problem if we were running as the Exim user. The sysadmin may |
4022 | expect this case to retain privilege because "the binary was called by the | |
4023 | Exim user", but it hasn't, because either the -D option set macros, or the | |
261dc43e | 4024 | -C option set a non-trusted configuration file. There are two possibilities: |
059ec3d9 PH |
4025 | |
4026 | (1) If deliver_drop_privilege is set, Exim is not going to re-exec in order | |
4027 | to do message deliveries. Thus, the fact that it is running as a | |
4028 | non-privileged user is plausible, and might be wanted in some special | |
4029 | configurations. However, really_exim will have been set false when | |
4030 | privilege was dropped, to stop Exim trying to write to its normal log | |
4031 | files. Therefore, re-enable normal log processing, assuming the sysadmin | |
4032 | has set up the log directory correctly. | |
4033 | ||
4034 | (2) If deliver_drop_privilege is not set, the configuration won't work as | |
4035 | apparently intended, and so we log a panic message. In order to retain | |
261dc43e DW |
4036 | root for -C or -D, the caller must either be root or be invoking a |
4037 | trusted configuration file (when deliver_drop_privilege is false). */ | |
059ec3d9 | 4038 | |
e2f5dc15 | 4039 | if (removed_privilege && (!trusted_config || macros != NULL) && |
059ec3d9 PH |
4040 | real_uid == exim_uid) |
4041 | { | |
059ec3d9 PH |
4042 | if (deliver_drop_privilege) |
4043 | really_exim = TRUE; /* let logging work normally */ | |
4044 | else | |
4045 | log_write(0, LOG_MAIN|LOG_PANIC, | |
cd25e41d | 4046 | "exim user lost privilege for using %s option", |
90b6341f | 4047 | trusted_config? "-D" : "-C"); |
059ec3d9 PH |
4048 | } |
4049 | ||
4050 | /* Start up Perl interpreter if Perl support is configured and there is a | |
4051 | perl_startup option, and the configuration or the command line specifies | |
4052 | initializing starting. Note that the global variables are actually called | |
4053 | opt_perl_xxx to avoid clashing with perl's namespace (perl_*). */ | |
4054 | ||
4055 | #ifdef EXIM_PERL | |
4056 | if (perl_start_option != 0) | |
4057 | opt_perl_at_start = (perl_start_option > 0); | |
4058 | if (opt_perl_at_start && opt_perl_startup != NULL) | |
4059 | { | |
4060 | uschar *errstr; | |
4061 | DEBUG(D_any) debug_printf("Starting Perl interpreter\n"); | |
4062 | errstr = init_perl(opt_perl_startup); | |
4063 | if (errstr != NULL) | |
4064 | { | |
4065 | fprintf(stderr, "exim: error in perl_startup code: %s\n", errstr); | |
4066 | return EXIT_FAILURE; | |
4067 | } | |
4068 | opt_perl_started = TRUE; | |
4069 | } | |
4070 | #endif /* EXIM_PERL */ | |
4071 | ||
4072 | /* Log the arguments of the call if the configuration file said so. This is | |
4073 | a debugging feature for finding out what arguments certain MUAs actually use. | |
4074 | Don't attempt it if logging is disabled, or if listing variables or if | |
4075 | verifying/testing addresses or expansions. */ | |
4076 | ||
6c6d6e48 | 4077 | if (((debug_selector & D_any) != 0 || LOGGING(arguments)) |
31619da6 | 4078 | && really_exim && !list_options && !checking) |
059ec3d9 PH |
4079 | { |
4080 | int i; | |
4081 | uschar *p = big_buffer; | |
1ac6b2e7 | 4082 | Ustrcpy(p, "cwd= (failed)"); |
3615fa9a HSHR |
4083 | |
4084 | Ustrncpy(p + 4, initial_cwd, big_buffer_size-5); | |
4085 | ||
059ec3d9 PH |
4086 | while (*p) p++; |
4087 | (void)string_format(p, big_buffer_size - (p - big_buffer), " %d args:", argc); | |
4088 | while (*p) p++; | |
4089 | for (i = 0; i < argc; i++) | |
4090 | { | |
4091 | int len = Ustrlen(argv[i]); | |
55414b25 | 4092 | const uschar *printing; |
059ec3d9 PH |
4093 | uschar *quote; |
4094 | if (p + len + 8 >= big_buffer + big_buffer_size) | |
4095 | { | |
4096 | Ustrcpy(p, " ..."); | |
4097 | log_write(0, LOG_MAIN, "%s", big_buffer); | |
4098 | Ustrcpy(big_buffer, "..."); | |
4099 | p = big_buffer + 3; | |
4100 | } | |
4101 | printing = string_printing(argv[i]); | |
4102 | if (printing[0] == 0) quote = US"\""; else | |
4103 | { | |
55414b25 | 4104 | const uschar *pp = printing; |
059ec3d9 PH |
4105 | quote = US""; |
4106 | while (*pp != 0) if (isspace(*pp++)) { quote = US"\""; break; } | |
4107 | } | |
4108 | sprintf(CS p, " %s%.*s%s", quote, (int)(big_buffer_size - | |
4109 | (p - big_buffer) - 4), printing, quote); | |
4110 | while (*p) p++; | |
4111 | } | |
31619da6 | 4112 | |
6c6d6e48 | 4113 | if (LOGGING(arguments)) |
31619da6 PH |
4114 | log_write(0, LOG_MAIN, "%s", big_buffer); |
4115 | else | |
4116 | debug_printf("%s\n", big_buffer); | |
059ec3d9 PH |
4117 | } |
4118 | ||
4119 | /* Set the working directory to be the top-level spool directory. We don't rely | |
4120 | on this in the code, which always uses fully qualified names, but it's useful | |
4121 | for core dumps etc. Don't complain if it fails - the spool directory might not | |
4122 | be generally accessible and calls with the -C option (and others) have lost | |
ba18e66a PH |
4123 | privilege by now. Before the chdir, we try to ensure that the directory exists. |
4124 | */ | |
059ec3d9 PH |
4125 | |
4126 | if (Uchdir(spool_directory) != 0) | |
4127 | { | |
1ac6b2e7 | 4128 | int dummy; |
ba18e66a | 4129 | (void)directory_make(spool_directory, US"", SPOOL_DIRECTORY_MODE, FALSE); |
1ac6b2e7 | 4130 | dummy = /* quieten compiler */ Uchdir(spool_directory); |
059ec3d9 PH |
4131 | } |
4132 | ||
4133 | /* Handle calls with the -bi option. This is a sendmail option to rebuild *the* | |
4134 | alias file. Exim doesn't have such a concept, but this call is screwed into | |
4135 | Sun's YP makefiles. Handle this by calling a configured script, as the real | |
4136 | user who called Exim. The -oA option can be used to pass an argument to the | |
4137 | script. */ | |
4138 | ||
4139 | if (bi_option) | |
4140 | { | |
1fe64dcc | 4141 | (void)fclose(config_file); |
059ec3d9 PH |
4142 | if (bi_command != NULL) |
4143 | { | |
4144 | int i = 0; | |
4145 | uschar *argv[3]; | |
4146 | argv[i++] = bi_command; | |
4147 | if (alias_arg != NULL) argv[i++] = alias_arg; | |
4148 | argv[i++] = NULL; | |
4149 | ||
4150 | setgroups(group_count, group_list); | |
4151 | exim_setugid(real_uid, real_gid, FALSE, US"running bi_command"); | |
4152 | ||
4153 | DEBUG(D_exec) debug_printf("exec %.256s %.256s\n", argv[0], | |
4154 | (argv[1] == NULL)? US"" : argv[1]); | |
4155 | ||
4156 | execv(CS argv[0], (char *const *)argv); | |
4157 | fprintf(stderr, "exim: exec failed: %s\n", strerror(errno)); | |
4158 | exit(EXIT_FAILURE); | |
4159 | } | |
4160 | else | |
4161 | { | |
4162 | DEBUG(D_any) debug_printf("-bi used but bi_command not set; exiting\n"); | |
4163 | exit(EXIT_SUCCESS); | |
4164 | } | |
4165 | } | |
4166 | ||
a3fb9793 PP |
4167 | /* We moved the admin/trusted check to be immediately after reading the |
4168 | configuration file. We leave these prints here to ensure that syslog setup, | |
4169 | logfile setup, and so on has already happened. */ | |
059ec3d9 PH |
4170 | |
4171 | if (trusted_caller) DEBUG(D_any) debug_printf("trusted user\n"); | |
4172 | if (admin_user) DEBUG(D_any) debug_printf("admin user\n"); | |
4173 | ||
4174 | /* Only an admin user may start the daemon or force a queue run in the default | |
4175 | configuration, but the queue run restriction can be relaxed. Only an admin | |
4176 | user may request that a message be returned to its sender forthwith. Only an | |
4177 | admin user may specify a debug level greater than D_v (because it might show | |
4178 | passwords, etc. in lookup queries). Only an admin user may request a queue | |
8544e77a PP |
4179 | count. Only an admin user can use the test interface to scan for email |
4180 | (because Exim will be in the spool dir and able to look at mails). */ | |
059ec3d9 PH |
4181 | |
4182 | if (!admin_user) | |
4183 | { | |
4184 | BOOL debugset = (debug_selector & ~D_v) != 0; | |
8544e77a | 4185 | if (deliver_give_up || daemon_listen || malware_test_file || |
059ec3d9 PH |
4186 | (count_queue && queue_list_requires_admin) || |
4187 | (list_queue && queue_list_requires_admin) || | |
4188 | (queue_interval >= 0 && prod_requires_admin) || | |
4189 | (debugset && !running_in_test_harness)) | |
4190 | { | |
4191 | fprintf(stderr, "exim:%s permission denied\n", debugset? " debugging" : ""); | |
4192 | exit(EXIT_FAILURE); | |
4193 | } | |
4194 | } | |
4195 | ||
4196 | /* If the real user is not root or the exim uid, the argument for passing | |
4197 | in an open TCP/IP connection for another message is not permitted, nor is | |
4198 | running with the -N option for any delivery action, unless this call to exim is | |
4199 | one that supplied an input message, or we are using a patched exim for | |
4200 | regression testing. */ | |
4201 | ||
4202 | if (real_uid != root_uid && real_uid != exim_uid && | |
4203 | (continue_hostname != NULL || | |
4204 | (dont_deliver && | |
4205 | (queue_interval >= 0 || daemon_listen || msg_action_arg > 0) | |
4206 | )) && !running_in_test_harness) | |
4207 | { | |
4208 | fprintf(stderr, "exim: Permission denied\n"); | |
4209 | return EXIT_FAILURE; | |
4210 | } | |
4211 | ||
4212 | /* If the caller is not trusted, certain arguments are ignored when running for | |
f05da2e8 PH |
4213 | real, but are permitted when checking things (-be, -bv, -bt, -bh, -bf, -bF). |
4214 | Note that authority for performing certain actions on messages is tested in the | |
059ec3d9 PH |
4215 | queue_action() function. */ |
4216 | ||
34e86e20 | 4217 | if (!trusted_caller && !checking) |
059ec3d9 PH |
4218 | { |
4219 | sender_host_name = sender_host_address = interface_address = | |
4220 | sender_ident = received_protocol = NULL; | |
4221 | sender_host_port = interface_port = 0; | |
4222 | sender_host_authenticated = authenticated_sender = authenticated_id = NULL; | |
4223 | } | |
4224 | ||
4225 | /* If a sender host address is set, extract the optional port number off the | |
4226 | end of it and check its syntax. Do the same thing for the interface address. | |
4227 | Exim exits if the syntax is bad. */ | |
4228 | ||
4229 | else | |
4230 | { | |
4231 | if (sender_host_address != NULL) | |
4232 | sender_host_port = check_port(sender_host_address); | |
4233 | if (interface_address != NULL) | |
4234 | interface_port = check_port(interface_address); | |
4235 | } | |
4236 | ||
f4ee74ac PP |
4237 | /* If the caller is trusted, then they can use -G to suppress_local_fixups. */ |
4238 | if (flag_G) | |
4239 | { | |
4240 | if (trusted_caller) | |
4241 | { | |
4242 | suppress_local_fixups = suppress_local_fixups_default = TRUE; | |
4243 | DEBUG(D_acl) debug_printf("suppress_local_fixups forced on by -G\n"); | |
4244 | } | |
4245 | else | |
4246 | { | |
4247 | fprintf(stderr, "exim: permission denied (-G requires a trusted user)\n"); | |
4248 | return EXIT_FAILURE; | |
4249 | } | |
4250 | } | |
4251 | ||
059ec3d9 PH |
4252 | /* If an SMTP message is being received check to see if the standard input is a |
4253 | TCP/IP socket. If it is, we assume that Exim was called from inetd if the | |
4254 | caller is root or the Exim user, or if the port is a privileged one. Otherwise, | |
4255 | barf. */ | |
4256 | ||
4257 | if (smtp_input) | |
4258 | { | |
4259 | union sockaddr_46 inetd_sock; | |
36a3b041 | 4260 | EXIM_SOCKLEN_T size = sizeof(inetd_sock); |
059ec3d9 PH |
4261 | if (getpeername(0, (struct sockaddr *)(&inetd_sock), &size) == 0) |
4262 | { | |
4263 | int family = ((struct sockaddr *)(&inetd_sock))->sa_family; | |
4264 | if (family == AF_INET || family == AF_INET6) | |
4265 | { | |
4266 | union sockaddr_46 interface_sock; | |
4267 | size = sizeof(interface_sock); | |
4268 | ||
4269 | if (getsockname(0, (struct sockaddr *)(&interface_sock), &size) == 0) | |
4270 | interface_address = host_ntoa(-1, &interface_sock, NULL, | |
4271 | &interface_port); | |
4272 | ||
817d9f57 | 4273 | if (host_is_tls_on_connect_port(interface_port)) tls_in.on_connect = TRUE; |
059ec3d9 PH |
4274 | |
4275 | if (real_uid == root_uid || real_uid == exim_uid || interface_port < 1024) | |
4276 | { | |
4277 | is_inetd = TRUE; | |
4278 | sender_host_address = host_ntoa(-1, (struct sockaddr *)(&inetd_sock), | |
4279 | NULL, &sender_host_port); | |
4280 | if (mua_wrapper) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Input from " | |
4281 | "inetd is not supported when mua_wrapper is set"); | |
4282 | } | |
4283 | else | |
4284 | { | |
4285 | fprintf(stderr, | |
4286 | "exim: Permission denied (unprivileged user, unprivileged port)\n"); | |
4287 | return EXIT_FAILURE; | |
4288 | } | |
4289 | } | |
4290 | } | |
4291 | } | |
4292 | ||
4293 | /* If the load average is going to be needed while receiving a message, get it | |
4294 | now for those OS that require the first call to os_getloadavg() to be done as | |
4295 | root. There will be further calls later for each message received. */ | |
4296 | ||
4297 | #ifdef LOAD_AVG_NEEDS_ROOT | |
4298 | if (receiving_message && | |
4299 | (queue_only_load >= 0 || | |
4300 | (is_inetd && smtp_load_reserve >= 0) | |
4301 | )) | |
4302 | { | |
8669f003 | 4303 | load_average = OS_GETLOADAVG(); |
059ec3d9 PH |
4304 | } |
4305 | #endif | |
4306 | ||
4307 | /* The queue_only configuration option can be overridden by -odx on the command | |
4308 | line, except that if queue_only_override is false, queue_only cannot be unset | |
4309 | from the command line. */ | |
4310 | ||
4311 | if (queue_only_set && (queue_only_override || arg_queue_only)) | |
4312 | queue_only = arg_queue_only; | |
4313 | ||
4314 | /* The receive_timeout and smtp_receive_timeout options can be overridden by | |
4315 | -or and -os. */ | |
4316 | ||
4317 | if (arg_receive_timeout >= 0) receive_timeout = arg_receive_timeout; | |
4318 | if (arg_smtp_receive_timeout >= 0) | |
4319 | smtp_receive_timeout = arg_smtp_receive_timeout; | |
4320 | ||
4321 | /* If Exim was started with root privilege, unless we have already removed the | |
4322 | root privilege above as a result of -C, -D, -be, -bf or -bF, remove it now | |
4323 | except when starting the daemon or doing some kind of delivery or address | |
4324 | testing (-bt). These are the only cases when root need to be retained. We run | |
4325 | as exim for -bv and -bh. However, if deliver_drop_privilege is set, root is | |
805e5aab TF |
4326 | retained only for starting the daemon. We always do the initgroups() in this |
4327 | situation (controlled by the TRUE below), in order to be as close as possible | |
4328 | to the state Exim usually runs in. */ | |
059ec3d9 PH |
4329 | |
4330 | if (!unprivileged && /* originally had root AND */ | |
4331 | !removed_privilege && /* still got root AND */ | |
4332 | !daemon_listen && /* not starting the daemon */ | |
4333 | queue_interval <= 0 && /* (either kind of daemon) */ | |
4334 | ( /* AND EITHER */ | |
4335 | deliver_drop_privilege || /* requested unprivileged */ | |
4336 | ( /* OR */ | |
4337 | queue_interval < 0 && /* not running the queue */ | |
4338 | (msg_action_arg < 0 || /* and */ | |
4339 | msg_action != MSG_DELIVER) && /* not delivering and */ | |
4340 | (!checking || !address_test_mode) /* not address checking */ | |
4341 | ) | |
4342 | )) | |
4343 | { | |
805e5aab | 4344 | exim_setugid(exim_uid, exim_gid, TRUE, US"privilege not needed"); |
059ec3d9 PH |
4345 | } |
4346 | ||
4347 | /* When we are retaining a privileged uid, we still change to the exim gid. */ | |
4348 | ||
1670ef10 PP |
4349 | else |
4350 | { | |
4351 | int rv; | |
4352 | rv = setgid(exim_gid); | |
4353 | /* Impact of failure is that some stuff might end up with an incorrect group. | |
4354 | We track this for failures from root, since any attempt to change privilege | |
4355 | by root should succeed and failures should be examined. For non-root, | |
4356 | there's no security risk. For me, it's { exim -bV } on a just-built binary, | |
4357 | no need to complain then. */ | |
4358 | if (rv == -1) | |
4359 | { | |
33191679 | 4360 | if (!(unprivileged || removed_privilege)) |
1670ef10 PP |
4361 | { |
4362 | fprintf(stderr, | |
4363 | "exim: changing group failed: %s\n", strerror(errno)); | |
4364 | exit(EXIT_FAILURE); | |
4365 | } | |
4366 | else | |
33191679 | 4367 | DEBUG(D_any) debug_printf("changing group to %ld failed: %s\n", |
1670ef10 PP |
4368 | (long int)exim_gid, strerror(errno)); |
4369 | } | |
4370 | } | |
059ec3d9 | 4371 | |
8544e77a PP |
4372 | /* Handle a request to scan a file for malware */ |
4373 | if (malware_test_file) | |
4374 | { | |
dbc4b90d | 4375 | #ifdef WITH_CONTENT_SCAN |
8544e77a PP |
4376 | int result; |
4377 | set_process_info("scanning file for malware"); | |
4378 | result = malware_in_file(malware_test_file); | |
4379 | if (result == FAIL) | |
4380 | { | |
4381 | printf("No malware found.\n"); | |
4382 | exit(EXIT_SUCCESS); | |
4383 | } | |
4384 | if (result != OK) | |
4385 | { | |
4386 | printf("Malware lookup returned non-okay/fail: %d\n", result); | |
4387 | exit(EXIT_FAILURE); | |
4388 | } | |
4389 | if (malware_name) | |
4390 | printf("Malware found: %s\n", malware_name); | |
4391 | else | |
4392 | printf("Malware scan detected malware of unknown name.\n"); | |
dbc4b90d PP |
4393 | #else |
4394 | printf("Malware scanning not enabled at compile time.\n"); | |
4395 | #endif | |
8544e77a PP |
4396 | exit(EXIT_FAILURE); |
4397 | } | |
4398 | ||
059ec3d9 PH |
4399 | /* Handle a request to list the delivery queue */ |
4400 | ||
4401 | if (list_queue) | |
4402 | { | |
4403 | set_process_info("listing the queue"); | |
4404 | queue_list(list_queue_option, argv + recipients_arg, argc - recipients_arg); | |
4405 | exit(EXIT_SUCCESS); | |
4406 | } | |
4407 | ||
4408 | /* Handle a request to count the delivery queue */ | |
4409 | ||
4410 | if (count_queue) | |
4411 | { | |
4412 | set_process_info("counting the queue"); | |
4413 | queue_count(); | |
4414 | exit(EXIT_SUCCESS); | |
4415 | } | |
4416 | ||
0ef732d9 PH |
4417 | /* Handle actions on specific messages, except for the force delivery and |
4418 | message load actions, which are done below. Some actions take a whole list of | |
4419 | message ids, which are known to continue up to the end of the arguments. Others | |
4420 | take a single message id and then operate on the recipients list. */ | |
059ec3d9 | 4421 | |
0ef732d9 | 4422 | if (msg_action_arg > 0 && msg_action != MSG_DELIVER && msg_action != MSG_LOAD) |
059ec3d9 PH |
4423 | { |
4424 | int yield = EXIT_SUCCESS; | |
4425 | set_process_info("acting on specified messages"); | |
4426 | ||
4427 | if (!one_msg_action) | |
4428 | { | |
4429 | for (i = msg_action_arg; i < argc; i++) | |
4430 | if (!queue_action(argv[i], msg_action, NULL, 0, 0)) | |
4431 | yield = EXIT_FAILURE; | |
4432 | } | |
4433 | ||
4434 | else if (!queue_action(argv[msg_action_arg], msg_action, argv, argc, | |
4435 | recipients_arg)) yield = EXIT_FAILURE; | |
4436 | exit(yield); | |
4437 | } | |
4438 | ||
cb46fd2b JH |
4439 | /* We used to set up here to skip reading the ACL section, on |
4440 | (msg_action_arg > 0 || (queue_interval == 0 && !daemon_listen) | |
4441 | Now, since the intro of the ${acl } expansion, ACL definitions may be | |
4442 | needed in transports so we lost the optimisation. */ | |
059ec3d9 | 4443 | |
cb46fd2b | 4444 | readconf_rest(); |
059ec3d9 PH |
4445 | |
4446 | /* The configuration data will have been read into POOL_PERM because we won't | |
4447 | ever want to reset back past it. Change the current pool to POOL_MAIN. In fact, | |
4448 | this is just a bit of pedantic tidiness. It wouldn't really matter if the | |
4449 | configuration were read into POOL_MAIN, because we don't do any resets till | |
4450 | later on. However, it seems right, and it does ensure that both pools get used. | |
4451 | */ | |
4452 | ||
4453 | store_pool = POOL_MAIN; | |
4454 | ||
4455 | /* Handle the -brt option. This is for checking out retry configurations. | |
4456 | The next three arguments are a domain name or a complete address, and | |
4457 | optionally two error numbers. All it does is to call the function that | |
4458 | scans the retry configuration data. */ | |
4459 | ||
4460 | if (test_retry_arg >= 0) | |
4461 | { | |
4462 | retry_config *yield; | |
4463 | int basic_errno = 0; | |
4464 | int more_errno = 0; | |
4465 | uschar *s1, *s2; | |
4466 | ||
4467 | if (test_retry_arg >= argc) | |
4468 | { | |
4469 | printf("-brt needs a domain or address argument\n"); | |
4470 | exim_exit(EXIT_FAILURE); | |
4471 | } | |
4472 | s1 = argv[test_retry_arg++]; | |
4473 | s2 = NULL; | |
4474 | ||
4475 | /* If the first argument contains no @ and no . it might be a local user | |
4476 | or it might be a single-component name. Treat as a domain. */ | |
4477 | ||
4478 | if (Ustrchr(s1, '@') == NULL && Ustrchr(s1, '.') == NULL) | |
4479 | { | |
4480 | printf("Warning: \"%s\" contains no '@' and no '.' characters. It is " | |
4481 | "being \ntreated as a one-component domain, not as a local part.\n\n", | |
4482 | s1); | |
4483 | } | |
4484 | ||
4485 | /* There may be an optional second domain arg. */ | |
4486 | ||
4487 | if (test_retry_arg < argc && Ustrchr(argv[test_retry_arg], '.') != NULL) | |
4488 | s2 = argv[test_retry_arg++]; | |
4489 | ||
4490 | /* The final arg is an error name */ | |
4491 | ||
4492 | if (test_retry_arg < argc) | |
4493 | { | |
4494 | uschar *ss = argv[test_retry_arg]; | |
4495 | uschar *error = | |
4496 | readconf_retry_error(ss, ss + Ustrlen(ss), &basic_errno, &more_errno); | |
4497 | if (error != NULL) | |
4498 | { | |
4499 | printf("%s\n", CS error); | |
4500 | return EXIT_FAILURE; | |
4501 | } | |
4502 | ||
e97957bc PH |
4503 | /* For the {MAIL,RCPT,DATA}_4xx errors, a value of 255 means "any", and a |
4504 | code > 100 as an error is for matching codes to the decade. Turn them into | |
4505 | a real error code, off the decade. */ | |
059ec3d9 | 4506 | |
e97957bc PH |
4507 | if (basic_errno == ERRNO_MAIL4XX || |
4508 | basic_errno == ERRNO_RCPT4XX || | |
4509 | basic_errno == ERRNO_DATA4XX) | |
059ec3d9 PH |
4510 | { |
4511 | int code = (more_errno >> 8) & 255; | |
4512 | if (code == 255) | |
4513 | more_errno = (more_errno & 0xffff00ff) | (21 << 8); | |
4514 | else if (code > 100) | |
4515 | more_errno = (more_errno & 0xffff00ff) | ((code - 96) << 8); | |
4516 | } | |
4517 | } | |
4518 | ||
4519 | yield = retry_find_config(s1, s2, basic_errno, more_errno); | |
4520 | if (yield == NULL) printf("No retry information found\n"); else | |
4521 | { | |
4522 | retry_rule *r; | |
4523 | more_errno = yield->more_errno; | |
4524 | printf("Retry rule: %s ", yield->pattern); | |
4525 | ||
4526 | if (yield->basic_errno == ERRNO_EXIMQUOTA) | |
4527 | { | |
4528 | printf("quota%s%s ", | |
4529 | (more_errno > 0)? "_" : "", | |
4530 | (more_errno > 0)? readconf_printtime(more_errno) : US""); | |
4531 | } | |
4532 | else if (yield->basic_errno == ECONNREFUSED) | |
4533 | { | |
4534 | printf("refused%s%s ", | |
4535 | (more_errno > 0)? "_" : "", | |
4536 | (more_errno == 'M')? "MX" : | |
4537 | (more_errno == 'A')? "A" : ""); | |
4538 | } | |
4539 | else if (yield->basic_errno == ETIMEDOUT) | |
4540 | { | |
4541 | printf("timeout"); | |
4542 | if ((more_errno & RTEF_CTOUT) != 0) printf("_connect"); | |
4543 | more_errno &= 255; | |
4544 | if (more_errno != 0) printf("_%s", | |
4545 | (more_errno == 'M')? "MX" : "A"); | |
4546 | printf(" "); | |
4547 | } | |
4548 | else if (yield->basic_errno == ERRNO_AUTHFAIL) | |
4549 | printf("auth_failed "); | |
4550 | else printf("* "); | |
4551 | ||
4552 | for (r = yield->rules; r != NULL; r = r->next) | |
4553 | { | |
4554 | printf("%c,%s", r->rule, readconf_printtime(r->timeout)); /* Do not */ | |
4555 | printf(",%s", readconf_printtime(r->p1)); /* amalgamate */ | |
4556 | if (r->rule == 'G') | |
4557 | { | |
4558 | int x = r->p2; | |
4559 | int f = x % 1000; | |
4560 | int d = 100; | |
4561 | printf(",%d.", x/1000); | |
4562 | do | |
4563 | { | |
4564 | printf("%d", f/d); | |
4565 | f %= d; | |
4566 | d /= 10; | |
4567 | } | |
4568 | while (f != 0); | |
4569 | } | |
4570 | printf("; "); | |
4571 | } | |
4572 | ||
4573 | printf("\n"); | |
4574 | } | |
4575 | exim_exit(EXIT_SUCCESS); | |
4576 | } | |
4577 | ||
4578 | /* Handle a request to list one or more configuration options */ | |
12f69989 | 4579 | /* If -n was set, we suppress some information */ |
059ec3d9 PH |
4580 | |
4581 | if (list_options) | |
4582 | { | |
4583 | set_process_info("listing variables"); | |
12f69989 | 4584 | if (recipients_arg >= argc) readconf_print(US"all", NULL, flag_n); |
059ec3d9 PH |
4585 | else for (i = recipients_arg; i < argc; i++) |
4586 | { | |
4587 | if (i < argc - 1 && | |
4588 | (Ustrcmp(argv[i], "router") == 0 || | |
4589 | Ustrcmp(argv[i], "transport") == 0 || | |
5d9c27ec | 4590 | Ustrcmp(argv[i], "authenticator") == 0 || |
bc3c7bb7 HSHR |
4591 | Ustrcmp(argv[i], "macro") == 0 || |
4592 | Ustrcmp(argv[i], "environment") == 0)) | |
059ec3d9 | 4593 | { |
12f69989 | 4594 | readconf_print(argv[i+1], argv[i], flag_n); |
059ec3d9 PH |
4595 | i++; |
4596 | } | |
12f69989 | 4597 | else readconf_print(argv[i], NULL, flag_n); |
059ec3d9 PH |
4598 | } |
4599 | exim_exit(EXIT_SUCCESS); | |
4600 | } | |
4601 | ||
bf3c2c6b HSHR |
4602 | if (list_config) |
4603 | { | |
4604 | set_process_info("listing config"); | |
3257ed4b | 4605 | readconf_print(US"config", NULL, flag_n); |
bf3c2c6b HSHR |
4606 | exim_exit(EXIT_SUCCESS); |
4607 | } | |
4608 | ||
059ec3d9 | 4609 | |
2592e6c0 JH |
4610 | /* Initialise subsystems as required */ |
4611 | #ifndef DISABLE_DKIM | |
4612 | dkim_exim_init(); | |
4613 | #endif | |
9094b84b | 4614 | deliver_init(); |
2592e6c0 JH |
4615 | |
4616 | ||
059ec3d9 | 4617 | /* Handle a request to deliver one or more messages that are already on the |
0ef732d9 PH |
4618 | queue. Values of msg_action other than MSG_DELIVER and MSG_LOAD are dealt with |
4619 | above. MSG_LOAD is handled with -be (which is the only time it applies) below. | |
4620 | ||
4621 | Delivery of specific messages is typically used for a small number when | |
4622 | prodding by hand (when the option forced_delivery will be set) or when | |
4623 | re-execing to regain root privilege. Each message delivery must happen in a | |
4624 | separate process, so we fork a process for each one, and run them sequentially | |
4625 | so that debugging output doesn't get intertwined, and to avoid spawning too | |
4626 | many processes if a long list is given. However, don't fork for the last one; | |
4627 | this saves a process in the common case when Exim is called to deliver just one | |
4628 | message. */ | |
4629 | ||
4630 | if (msg_action_arg > 0 && msg_action != MSG_LOAD) | |
059ec3d9 PH |
4631 | { |
4632 | if (prod_requires_admin && !admin_user) | |
4633 | { | |
4634 | fprintf(stderr, "exim: Permission denied\n"); | |
4635 | exim_exit(EXIT_FAILURE); | |
4636 | } | |
4637 | set_process_info("delivering specified messages"); | |
4638 | if (deliver_give_up) forced_delivery = deliver_force_thaw = TRUE; | |
4639 | for (i = msg_action_arg; i < argc; i++) | |
4640 | { | |
4641 | int status; | |
4642 | pid_t pid; | |
4643 | if (i == argc - 1) | |
4644 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4645 | else if ((pid = fork()) == 0) | |
4646 | { | |
4647 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4648 | _exit(EXIT_SUCCESS); | |
4649 | } | |
4650 | else if (pid < 0) | |
4651 | { | |
4652 | fprintf(stderr, "failed to fork delivery process for %s: %s\n", argv[i], | |
4653 | strerror(errno)); | |
4654 | exim_exit(EXIT_FAILURE); | |
4655 | } | |
4656 | else wait(&status); | |
4657 | } | |
4658 | exim_exit(EXIT_SUCCESS); | |
4659 | } | |
4660 | ||
4661 | ||
4662 | /* If only a single queue run is requested, without SMTP listening, we can just | |
4663 | turn into a queue runner, with an optional starting message id. */ | |
4664 | ||
4665 | if (queue_interval == 0 && !daemon_listen) | |
4666 | { | |
4667 | DEBUG(D_queue_run) debug_printf("Single queue run%s%s%s%s\n", | |
4668 | (start_queue_run_id == NULL)? US"" : US" starting at ", | |
4669 | (start_queue_run_id == NULL)? US"" : start_queue_run_id, | |
4670 | (stop_queue_run_id == NULL)? US"" : US" stopping at ", | |
4671 | (stop_queue_run_id == NULL)? US"" : stop_queue_run_id); | |
6073ad45 | 4672 | if (*queue_name) |
4d146046 | 4673 | set_process_info("running the '%s' queue (single queue run)", queue_name); |
6073ad45 JH |
4674 | else |
4675 | set_process_info("running the queue (single queue run)"); | |
059ec3d9 PH |
4676 | queue_run(start_queue_run_id, stop_queue_run_id, FALSE); |
4677 | exim_exit(EXIT_SUCCESS); | |
4678 | } | |
4679 | ||
4680 | ||
4681 | /* Find the login name of the real user running this process. This is always | |
4682 | needed when receiving a message, because it is written into the spool file. It | |
4683 | may also be used to construct a from: or a sender: header, and in this case we | |
4684 | need the user's full name as well, so save a copy of it, checked for RFC822 | |
4685 | syntax and munged if necessary, if it hasn't previously been set by the -F | |
4686 | argument. We may try to get the passwd entry more than once, in case NIS or | |
4687 | other delays are in evidence. Save the home directory for use in filter testing | |
4688 | (only). */ | |
4689 | ||
4690 | for (i = 0;;) | |
4691 | { | |
4692 | if ((pw = getpwuid(real_uid)) != NULL) | |
4693 | { | |
4694 | originator_login = string_copy(US pw->pw_name); | |
4695 | originator_home = string_copy(US pw->pw_dir); | |
4696 | ||
4697 | /* If user name has not been set by -F, set it from the passwd entry | |
4698 | unless -f has been used to set the sender address by a trusted user. */ | |
4699 | ||
4700 | if (originator_name == NULL) | |
4701 | { | |
4702 | if (sender_address == NULL || | |
f05da2e8 | 4703 | (!trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 PH |
4704 | { |
4705 | uschar *name = US pw->pw_gecos; | |
4706 | uschar *amp = Ustrchr(name, '&'); | |
4707 | uschar buffer[256]; | |
4708 | ||
4709 | /* Most Unix specify that a '&' character in the gecos field is | |
4710 | replaced by a copy of the login name, and some even specify that | |
4711 | the first character should be upper cased, so that's what we do. */ | |
4712 | ||
4713 | if (amp != NULL) | |
4714 | { | |
4715 | int loffset; | |
4716 | string_format(buffer, sizeof(buffer), "%.*s%n%s%s", | |
4717 | amp - name, name, &loffset, originator_login, amp + 1); | |
4718 | buffer[loffset] = toupper(buffer[loffset]); | |
4719 | name = buffer; | |
4720 | } | |
4721 | ||
4722 | /* If a pattern for matching the gecos field was supplied, apply | |
4723 | it and then expand the name string. */ | |
4724 | ||
4725 | if (gecos_pattern != NULL && gecos_name != NULL) | |
4726 | { | |
4727 | const pcre *re; | |
4728 | re = regex_must_compile(gecos_pattern, FALSE, TRUE); /* Use malloc */ | |
4729 | ||
4730 | if (regex_match_and_setup(re, name, 0, -1)) | |
4731 | { | |
4732 | uschar *new_name = expand_string(gecos_name); | |
4733 | expand_nmax = -1; | |
4734 | if (new_name != NULL) | |
4735 | { | |
4736 | DEBUG(D_receive) debug_printf("user name \"%s\" extracted from " | |
4737 | "gecos field \"%s\"\n", new_name, name); | |
4738 | name = new_name; | |
4739 | } | |
4740 | else DEBUG(D_receive) debug_printf("failed to expand gecos_name string " | |
4741 | "\"%s\": %s\n", gecos_name, expand_string_message); | |
4742 | } | |
4743 | else DEBUG(D_receive) debug_printf("gecos_pattern \"%s\" did not match " | |
4744 | "gecos field \"%s\"\n", gecos_pattern, name); | |
4745 | store_free((void *)re); | |
4746 | } | |
4747 | originator_name = string_copy(name); | |
4748 | } | |
4749 | ||
4750 | /* A trusted caller has used -f but not -F */ | |
4751 | ||
4752 | else originator_name = US""; | |
4753 | } | |
4754 | ||
4755 | /* Break the retry loop */ | |
4756 | ||
4757 | break; | |
4758 | } | |
4759 | ||
4760 | if (++i > finduser_retries) break; | |
4761 | sleep(1); | |
4762 | } | |
4763 | ||
4764 | /* If we cannot get a user login, log the incident and give up, unless the | |
4765 | configuration specifies something to use. When running in the test harness, | |
8800895a | 4766 | any setting of unknown_login overrides the actual name. */ |
059ec3d9 PH |
4767 | |
4768 | if (originator_login == NULL || running_in_test_harness) | |
4769 | { | |
4770 | if (unknown_login != NULL) | |
4771 | { | |
4772 | originator_login = expand_string(unknown_login); | |
4773 | if (originator_name == NULL && unknown_username != NULL) | |
4774 | originator_name = expand_string(unknown_username); | |
4775 | if (originator_name == NULL) originator_name = US""; | |
4776 | } | |
4777 | if (originator_login == NULL) | |
4778 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to get user name for uid %d", | |
4779 | (int)real_uid); | |
4780 | } | |
4781 | ||
4782 | /* Ensure that the user name is in a suitable form for use as a "phrase" in an | |
4783 | RFC822 address.*/ | |
4784 | ||
4785 | originator_name = string_copy(parse_fix_phrase(originator_name, | |
4786 | Ustrlen(originator_name), big_buffer, big_buffer_size)); | |
4787 | ||
4788 | /* If a message is created by this call of Exim, the uid/gid of its originator | |
4789 | are those of the caller. These values are overridden if an existing message is | |
4790 | read in from the spool. */ | |
4791 | ||
4792 | originator_uid = real_uid; | |
4793 | originator_gid = real_gid; | |
4794 | ||
4795 | DEBUG(D_receive) debug_printf("originator: uid=%d gid=%d login=%s name=%s\n", | |
4796 | (int)originator_uid, (int)originator_gid, originator_login, originator_name); | |
4797 | ||
4798 | /* Run in daemon and/or queue-running mode. The function daemon_go() never | |
4799 | returns. We leave this till here so that the originator_ fields are available | |
47c7a64a PH |
4800 | for incoming messages via the daemon. The daemon cannot be run in mua_wrapper |
4801 | mode. */ | |
059ec3d9 | 4802 | |
9ee44efb | 4803 | if (daemon_listen || inetd_wait_mode || queue_interval > 0) |
059ec3d9 | 4804 | { |
47c7a64a PH |
4805 | if (mua_wrapper) |
4806 | { | |
4807 | fprintf(stderr, "Daemon cannot be run when mua_wrapper is set\n"); | |
4808 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Daemon cannot be run when " | |
4809 | "mua_wrapper is set"); | |
4810 | } | |
059ec3d9 PH |
4811 | daemon_go(); |
4812 | } | |
4813 | ||
4814 | /* If the sender ident has not been set (by a trusted caller) set it to | |
4815 | the caller. This will get overwritten below for an inetd call. If a trusted | |
4816 | caller has set it empty, unset it. */ | |
4817 | ||
4818 | if (sender_ident == NULL) sender_ident = originator_login; | |
4819 | else if (sender_ident[0] == 0) sender_ident = NULL; | |
4820 | ||
4821 | /* Handle the -brw option, which is for checking out rewriting rules. Cause log | |
4822 | writes (on errors) to go to stderr instead. Can't do this earlier, as want the | |
4823 | originator_* variables set. */ | |
4824 | ||
4825 | if (test_rewrite_arg >= 0) | |
4826 | { | |
4827 | really_exim = FALSE; | |
4828 | if (test_rewrite_arg >= argc) | |
4829 | { | |
4830 | printf("-brw needs an address argument\n"); | |
4831 | exim_exit(EXIT_FAILURE); | |
4832 | } | |
4833 | rewrite_test(argv[test_rewrite_arg]); | |
4834 | exim_exit(EXIT_SUCCESS); | |
4835 | } | |
4836 | ||
4837 | /* A locally-supplied message is considered to be coming from a local user | |
4838 | unless a trusted caller supplies a sender address with -f, or is passing in the | |
4839 | message via SMTP (inetd invocation or otherwise). */ | |
4840 | ||
4841 | if ((sender_address == NULL && !smtp_input) || | |
f05da2e8 | 4842 | (!trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 PH |
4843 | { |
4844 | sender_local = TRUE; | |
4845 | ||
4846 | /* A trusted caller can supply authenticated_sender and authenticated_id | |
33d73e3b PH |
4847 | via -oMas and -oMai and if so, they will already be set. Otherwise, force |
4848 | defaults except when host checking. */ | |
059ec3d9 | 4849 | |
33d73e3b | 4850 | if (authenticated_sender == NULL && !host_checking) |
059ec3d9 PH |
4851 | authenticated_sender = string_sprintf("%s@%s", originator_login, |
4852 | qualify_domain_sender); | |
33d73e3b PH |
4853 | if (authenticated_id == NULL && !host_checking) |
4854 | authenticated_id = originator_login; | |
059ec3d9 PH |
4855 | } |
4856 | ||
4857 | /* Trusted callers are always permitted to specify the sender address. | |
4858 | Untrusted callers may specify it if it matches untrusted_set_sender, or if what | |
4859 | is specified is the empty address. However, if a trusted caller does not | |
4860 | specify a sender address for SMTP input, we leave sender_address unset. This | |
4861 | causes the MAIL commands to be honoured. */ | |
4862 | ||
4863 | if ((!smtp_input && sender_address == NULL) || | |
4864 | !receive_check_set_sender(sender_address)) | |
4865 | { | |
4866 | /* Either the caller is not permitted to set a general sender, or this is | |
4867 | non-SMTP input and the trusted caller has not set a sender. If there is no | |
4868 | sender, or if a sender other than <> is set, override with the originator's | |
4869 | login (which will get qualified below), except when checking things. */ | |
4870 | ||
4871 | if (sender_address == NULL /* No sender_address set */ | |
4872 | || /* OR */ | |
4873 | (sender_address[0] != 0 && /* Non-empty sender address, AND */ | |
34e86e20 | 4874 | !checking)) /* Not running tests, including filter tests */ |
059ec3d9 PH |
4875 | { |
4876 | sender_address = originator_login; | |
4877 | sender_address_forced = FALSE; | |
4878 | sender_address_domain = 0; | |
4879 | } | |
4880 | } | |
4881 | ||
4882 | /* Remember whether an untrusted caller set the sender address */ | |
4883 | ||
4884 | sender_set_untrusted = sender_address != originator_login && !trusted_caller; | |
4885 | ||
4886 | /* Ensure that the sender address is fully qualified unless it is the empty | |
4887 | address, which indicates an error message, or doesn't exist (root caller, smtp | |
4888 | interface, no -f argument). */ | |
4889 | ||
4890 | if (sender_address != NULL && sender_address[0] != 0 && | |
4891 | sender_address_domain == 0) | |
4892 | sender_address = string_sprintf("%s@%s", local_part_quote(sender_address), | |
4893 | qualify_domain_sender); | |
4894 | ||
4895 | DEBUG(D_receive) debug_printf("sender address = %s\n", sender_address); | |
4896 | ||
4897 | /* Handle a request to verify a list of addresses, or test them for delivery. | |
4898 | This must follow the setting of the sender address, since routers can be | |
4899 | predicated upon the sender. If no arguments are given, read addresses from | |
4900 | stdin. Set debug_level to at least D_v to get full output for address testing. | |
4901 | */ | |
4902 | ||
4903 | if (verify_address_mode || address_test_mode) | |
4904 | { | |
4905 | int exit_value = 0; | |
4906 | int flags = vopt_qualify; | |
4907 | ||
4908 | if (verify_address_mode) | |
4909 | { | |
4910 | if (!verify_as_sender) flags |= vopt_is_recipient; | |
4911 | DEBUG(D_verify) debug_print_ids(US"Verifying:"); | |
4912 | } | |
4913 | ||
4914 | else | |
4915 | { | |
4916 | flags |= vopt_is_recipient; | |
4917 | debug_selector |= D_v; | |
4918 | debug_file = stderr; | |
4919 | debug_fd = fileno(debug_file); | |
4920 | DEBUG(D_verify) debug_print_ids(US"Address testing:"); | |
4921 | } | |
4922 | ||
4923 | if (recipients_arg < argc) | |
4924 | { | |
4925 | while (recipients_arg < argc) | |
4926 | { | |
4927 | uschar *s = argv[recipients_arg++]; | |
4928 | while (*s != 0) | |
4929 | { | |
4930 | BOOL finished = FALSE; | |
4931 | uschar *ss = parse_find_address_end(s, FALSE); | |
4932 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
4933 | test_address(s, flags, &exit_value); | |
4934 | s = ss; | |
4935 | if (!finished) | |
4936 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
4937 | } | |
4938 | } | |
4939 | } | |
4940 | ||
4941 | else for (;;) | |
4942 | { | |
4943 | uschar *s = get_stdinput(NULL, NULL); | |
4944 | if (s == NULL) break; | |
4945 | test_address(s, flags, &exit_value); | |
4946 | } | |
4947 | ||
4948 | route_tidyup(); | |
4949 | exim_exit(exit_value); | |
4950 | } | |
4951 | ||
0ef732d9 PH |
4952 | /* Handle expansion checking. Either expand items on the command line, or read |
4953 | from stdin if there aren't any. If -Mset was specified, load the message so | |
328895cc PH |
4954 | that its variables can be used, but restrict this facility to admin users. |
4955 | Otherwise, if -bem was used, read a message from stdin. */ | |
059ec3d9 PH |
4956 | |
4957 | if (expansion_test) | |
4958 | { | |
03f68c52 | 4959 | dns_init(FALSE, FALSE, FALSE); |
0ef732d9 PH |
4960 | if (msg_action_arg > 0 && msg_action == MSG_LOAD) |
4961 | { | |
4962 | uschar spoolname[256]; /* Not big_buffer; used in spool_read_header() */ | |
4963 | if (!admin_user) | |
4964 | { | |
4965 | fprintf(stderr, "exim: permission denied\n"); | |
4966 | exit(EXIT_FAILURE); | |
4967 | } | |
4968 | message_id = argv[msg_action_arg]; | |
4969 | (void)string_format(spoolname, sizeof(spoolname), "%s-H", message_id); | |
789f8a4f | 4970 | if ((deliver_datafile = spool_open_datafile(message_id)) < 0) |
0ef732d9 PH |
4971 | printf ("Failed to load message datafile %s\n", message_id); |
4972 | if (spool_read_header(spoolname, TRUE, FALSE) != spool_read_OK) | |
4973 | printf ("Failed to load message %s\n", message_id); | |
4974 | } | |
4975 | ||
328895cc PH |
4976 | /* Read a test message from a file. We fudge it up to be on stdin, saving |
4977 | stdin itself for later reading of expansion strings. */ | |
4978 | ||
4979 | else if (expansion_test_message != NULL) | |
4980 | { | |
4981 | int save_stdin = dup(0); | |
4982 | int fd = Uopen(expansion_test_message, O_RDONLY, 0); | |
4983 | if (fd < 0) | |
4984 | { | |
4985 | fprintf(stderr, "exim: failed to open %s: %s\n", expansion_test_message, | |
4986 | strerror(errno)); | |
4987 | return EXIT_FAILURE; | |
4988 | } | |
4989 | (void) dup2(fd, 0); | |
4990 | filter_test = FTEST_USER; /* Fudge to make it look like filter test */ | |
4991 | message_ended = END_NOTENDED; | |
4992 | read_message_body(receive_msg(extract_recipients)); | |
2d2b05f4 | 4993 | message_linecount += body_linecount; |
328895cc PH |
4994 | (void)dup2(save_stdin, 0); |
4995 | (void)close(save_stdin); | |
935ff400 | 4996 | clearerr(stdin); /* Required by Darwin */ |
328895cc PH |
4997 | } |
4998 | ||
4999 | /* Allow $recipients for this testing */ | |
5000 | ||
5001 | enable_dollar_recipients = TRUE; | |
5002 | ||
0ef732d9 PH |
5003 | /* Expand command line items */ |
5004 | ||
059ec3d9 PH |
5005 | if (recipients_arg < argc) |
5006 | { | |
5007 | while (recipients_arg < argc) | |
5008 | { | |
5009 | uschar *s = argv[recipients_arg++]; | |
5010 | uschar *ss = expand_string(s); | |
0ef732d9 | 5011 | if (ss == NULL) printf ("Failed: %s\n", expand_string_message); |
059ec3d9 PH |
5012 | else printf("%s\n", CS ss); |
5013 | } | |
5014 | } | |
5015 | ||
5016 | /* Read stdin */ | |
5017 | ||
5018 | else | |
5019 | { | |
1ba28e2b PP |
5020 | char *(*fn_readline)(const char *) = NULL; |
5021 | void (*fn_addhist)(const char *) = NULL; | |
059ec3d9 PH |
5022 | |
5023 | #ifdef USE_READLINE | |
5024 | void *dlhandle = set_readline(&fn_readline, &fn_addhist); | |
5025 | #endif | |
5026 | ||
5027 | for (;;) | |
5028 | { | |
5029 | uschar *ss; | |
5030 | uschar *source = get_stdinput(fn_readline, fn_addhist); | |
5031 | if (source == NULL) break; | |
5032 | ss = expand_string(source); | |
5033 | if (ss == NULL) | |
5034 | printf ("Failed: %s\n", expand_string_message); | |
5035 | else printf("%s\n", CS ss); | |
5036 | } | |
5037 | ||
5038 | #ifdef USE_READLINE | |
5039 | if (dlhandle != NULL) dlclose(dlhandle); | |
5040 | #endif | |
5041 | } | |
5042 | ||
0ef732d9 PH |
5043 | /* The data file will be open after -Mset */ |
5044 | ||
5045 | if (deliver_datafile >= 0) | |
5046 | { | |
5047 | (void)close(deliver_datafile); | |
5048 | deliver_datafile = -1; | |
5049 | } | |
5050 | ||
059ec3d9 PH |
5051 | exim_exit(EXIT_SUCCESS); |
5052 | } | |
5053 | ||
5054 | ||
5055 | /* The active host name is normally the primary host name, but it can be varied | |
5056 | for hosts that want to play several parts at once. We need to ensure that it is | |
5057 | set for host checking, and for receiving messages. */ | |
5058 | ||
5059 | smtp_active_hostname = primary_hostname; | |
5060 | if (raw_active_hostname != NULL) | |
5061 | { | |
5062 | uschar *nah = expand_string(raw_active_hostname); | |
5063 | if (nah == NULL) | |
5064 | { | |
5065 | if (!expand_string_forcedfail) | |
5066 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand \"%s\" " | |
5067 | "(smtp_active_hostname): %s", raw_active_hostname, | |
5068 | expand_string_message); | |
5069 | } | |
5070 | else if (nah[0] != 0) smtp_active_hostname = nah; | |
5071 | } | |
5072 | ||
5073 | /* Handle host checking: this facility mocks up an incoming SMTP call from a | |
33d73e3b PH |
5074 | given IP address so that the blocking and relay configuration can be tested. |
5075 | Unless a sender_ident was set by -oMt, we discard it (the default is the | |
5076 | caller's login name). An RFC 1413 call is made only if we are running in the | |
5077 | test harness and an incoming interface and both ports are specified, because | |
5078 | there is no TCP/IP call to find the ident for. */ | |
059ec3d9 PH |
5079 | |
5080 | if (host_checking) | |
5081 | { | |
8e669ac1 | 5082 | int x[4]; |
6f0c9a4f | 5083 | int size; |
8e669ac1 | 5084 | |
33d73e3b PH |
5085 | if (!sender_ident_set) |
5086 | { | |
5087 | sender_ident = NULL; | |
5088 | if (running_in_test_harness && sender_host_port != 0 && | |
5089 | interface_address != NULL && interface_port != 0) | |
5090 | verify_get_ident(1413); | |
5091 | } | |
8e669ac1 | 5092 | |
6f0c9a4f PH |
5093 | /* In case the given address is a non-canonical IPv6 address, canonicize |
5094 | it. The code works for both IPv4 and IPv6, as it happens. */ | |
8e669ac1 | 5095 | |
6f0c9a4f PH |
5096 | size = host_aton(sender_host_address, x); |
5097 | sender_host_address = store_get(48); /* large enough for full IPv6 */ | |
5098 | (void)host_nmtoa(size, x, -1, sender_host_address, ':'); | |
5099 | ||
5100 | /* Now set up for testing */ | |
059ec3d9 PH |
5101 | |
5102 | host_build_sender_fullhost(); | |
5103 | smtp_input = TRUE; | |
5104 | smtp_in = stdin; | |
5105 | smtp_out = stdout; | |
5106 | sender_local = FALSE; | |
5107 | sender_host_notsocket = TRUE; | |
5108 | debug_file = stderr; | |
5109 | debug_fd = fileno(debug_file); | |
5110 | fprintf(stdout, "\n**** SMTP testing session as if from host %s\n" | |
5111 | "**** but without any ident (RFC 1413) callback.\n" | |
5112 | "**** This is not for real!\n\n", | |
5113 | sender_host_address); | |
5114 | ||
ce325893 | 5115 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 5116 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 5117 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
5118 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
5119 | ||
24796b8d PH |
5120 | /* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, |
5121 | because a log line has already been written for all its failure exists | |
5122 | (usually "connection refused: <reason>") and writing another one is | |
5123 | unnecessary clutter. */ | |
5124 | ||
059ec3d9 PH |
5125 | if (smtp_start_session()) |
5126 | { | |
5127 | reset_point = store_get(0); | |
5128 | for (;;) | |
5129 | { | |
5130 | store_reset(reset_point); | |
5131 | if (smtp_setup_msg() <= 0) break; | |
5132 | if (!receive_msg(FALSE)) break; | |
5133 | } | |
24796b8d | 5134 | smtp_log_no_mail(); |
059ec3d9 PH |
5135 | } |
5136 | exim_exit(EXIT_SUCCESS); | |
5137 | } | |
5138 | ||
5139 | ||
5140 | /* Arrange for message reception if recipients or SMTP were specified; | |
5141 | otherwise complain unless a version print (-bV) happened or this is a filter | |
98a90c36 PP |
5142 | verification test or info dump. |
5143 | In the former case, show the configuration file name. */ | |
059ec3d9 PH |
5144 | |
5145 | if (recipients_arg >= argc && !extract_recipients && !smtp_input) | |
5146 | { | |
5147 | if (version_printed) | |
5148 | { | |
5149 | printf("Configuration file is %s\n", config_main_filename); | |
5150 | return EXIT_SUCCESS; | |
5151 | } | |
81ea09ca | 5152 | |
98a90c36 PP |
5153 | if (info_flag != CMDINFO_NONE) |
5154 | { | |
5155 | show_exim_information(info_flag, info_stdout ? stdout : stderr); | |
5156 | return info_stdout ? EXIT_SUCCESS : EXIT_FAILURE; | |
5157 | } | |
5158 | ||
f05da2e8 | 5159 | if (filter_test == FTEST_NONE) |
81ea09ca | 5160 | exim_usage(called_as); |
059ec3d9 PH |
5161 | } |
5162 | ||
5163 | ||
5164 | /* If mua_wrapper is set, Exim is being used to turn an MUA that submits on the | |
5165 | standard input into an MUA that submits to a smarthost over TCP/IP. We know | |
5166 | that we are not called from inetd, because that is rejected above. The | |
5167 | following configuration settings are forced here: | |
5168 | ||
5169 | (1) Synchronous delivery (-odi) | |
5170 | (2) Errors to stderr (-oep == -oeq) | |
5171 | (3) No parallel remote delivery | |
5172 | (4) Unprivileged delivery | |
5173 | ||
5174 | We don't force overall queueing options because there are several of them; | |
5175 | instead, queueing is avoided below when mua_wrapper is set. However, we do need | |
5176 | to override any SMTP queueing. */ | |
5177 | ||
5178 | if (mua_wrapper) | |
5179 | { | |
5180 | synchronous_delivery = TRUE; | |
5181 | arg_error_handling = ERRORS_STDERR; | |
5182 | remote_max_parallel = 1; | |
5183 | deliver_drop_privilege = TRUE; | |
5184 | queue_smtp = FALSE; | |
5185 | queue_smtp_domains = NULL; | |
8c5d388a | 5186 | #ifdef SUPPORT_I18N |
0ec7e948 JH |
5187 | message_utf8_downconvert = -1; /* convert-if-needed */ |
5188 | #endif | |
059ec3d9 PH |
5189 | } |
5190 | ||
5191 | ||
5192 | /* Prepare to accept one or more new messages on the standard input. When a | |
5193 | message has been read, its id is returned in message_id[]. If doing immediate | |
5194 | delivery, we fork a delivery process for each received message, except for the | |
5195 | last one, where we can save a process switch. | |
5196 | ||
5197 | It is only in non-smtp mode that error_handling is allowed to be changed from | |
5198 | its default of ERRORS_SENDER by argument. (Idle thought: are any of the | |
5199 | sendmail error modes other than -oem ever actually used? Later: yes.) */ | |
5200 | ||
5201 | if (!smtp_input) error_handling = arg_error_handling; | |
5202 | ||
5203 | /* If this is an inetd call, ensure that stderr is closed to prevent panic | |
5204 | logging being sent down the socket and make an identd call to get the | |
5205 | sender_ident. */ | |
5206 | ||
5207 | else if (is_inetd) | |
5208 | { | |
1fe64dcc | 5209 | (void)fclose(stderr); |
059ec3d9 PH |
5210 | exim_nullstd(); /* Re-open to /dev/null */ |
5211 | verify_get_ident(IDENT_PORT); | |
5212 | host_build_sender_fullhost(); | |
5213 | set_process_info("handling incoming connection from %s via inetd", | |
5214 | sender_fullhost); | |
5215 | } | |
5216 | ||
5217 | /* If the sender host address has been set, build sender_fullhost if it hasn't | |
5218 | already been done (which it will have been for inetd). This caters for the | |
5219 | case when it is forced by -oMa. However, we must flag that it isn't a socket, | |
5220 | so that the test for IP options is skipped for -bs input. */ | |
5221 | ||
5222 | if (sender_host_address != NULL && sender_fullhost == NULL) | |
5223 | { | |
5224 | host_build_sender_fullhost(); | |
5225 | set_process_info("handling incoming connection from %s via -oMa", | |
5226 | sender_fullhost); | |
5227 | sender_host_notsocket = TRUE; | |
5228 | } | |
5229 | ||
5230 | /* Otherwise, set the sender host as unknown except for inetd calls. This | |
5231 | prevents host checking in the case of -bs not from inetd and also for -bS. */ | |
5232 | ||
5233 | else if (!is_inetd) sender_host_unknown = TRUE; | |
5234 | ||
5235 | /* If stdout does not exist, then dup stdin to stdout. This can happen | |
5236 | if exim is started from inetd. In this case fd 0 will be set to the socket, | |
5237 | but fd 1 will not be set. This also happens for passed SMTP channels. */ | |
5238 | ||
1fe64dcc | 5239 | if (fstat(1, &statbuf) < 0) (void)dup2(0, 1); |
059ec3d9 | 5240 | |
273f34d0 PH |
5241 | /* Set up the incoming protocol name and the state of the program. Root is |
5242 | allowed to force received protocol via the -oMr option above. If we have come | |
5243 | via inetd, the process info has already been set up. We don't set | |
5244 | received_protocol here for smtp input, as it varies according to | |
5245 | batch/HELO/EHLO/AUTH/TLS. */ | |
059ec3d9 PH |
5246 | |
5247 | if (smtp_input) | |
5248 | { | |
273f34d0 PH |
5249 | if (!is_inetd) set_process_info("accepting a local %sSMTP message from <%s>", |
5250 | smtp_batched_input? "batched " : "", | |
5251 | (sender_address!= NULL)? sender_address : originator_login); | |
059ec3d9 PH |
5252 | } |
5253 | else | |
5254 | { | |
5255 | if (received_protocol == NULL) | |
5256 | received_protocol = string_sprintf("local%s", called_as); | |
5257 | set_process_info("accepting a local non-SMTP message from <%s>", | |
5258 | sender_address); | |
5259 | } | |
5260 | ||
8669f003 PH |
5261 | /* Initialize the session_local_queue-only flag (this will be ignored if |
5262 | mua_wrapper is set) */ | |
059ec3d9 PH |
5263 | |
5264 | queue_check_only(); | |
8669f003 | 5265 | session_local_queue_only = queue_only; |
059ec3d9 PH |
5266 | |
5267 | /* For non-SMTP and for batched SMTP input, check that there is enough space on | |
5268 | the spool if so configured. On failure, we must not attempt to send an error | |
5269 | message! (For interactive SMTP, the check happens at MAIL FROM and an SMTP | |
5270 | error code is given.) */ | |
5271 | ||
5272 | if ((!smtp_input || smtp_batched_input) && !receive_check_fs(0)) | |
5273 | { | |
5274 | fprintf(stderr, "exim: insufficient disk space\n"); | |
5275 | return EXIT_FAILURE; | |
5276 | } | |
5277 | ||
273f34d0 PH |
5278 | /* If this is smtp input of any kind, real or batched, handle the start of the |
5279 | SMTP session. | |
24796b8d PH |
5280 | |
5281 | NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, | |
5282 | because a log line has already been written for all its failure exists | |
5283 | (usually "connection refused: <reason>") and writing another one is | |
5284 | unnecessary clutter. */ | |
059ec3d9 PH |
5285 | |
5286 | if (smtp_input) | |
5287 | { | |
5288 | smtp_in = stdin; | |
5289 | smtp_out = stdout; | |
ce325893 | 5290 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 5291 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 5292 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
5293 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
5294 | if (!smtp_start_session()) | |
5295 | { | |
5296 | mac_smtp_fflush(); | |
5297 | exim_exit(EXIT_SUCCESS); | |
5298 | } | |
5299 | } | |
5300 | ||
45b91596 | 5301 | /* Otherwise, set up the input size limit here. */ |
059ec3d9 PH |
5302 | |
5303 | else | |
5304 | { | |
d45b1de8 PH |
5305 | thismessage_size_limit = expand_string_integer(message_size_limit, TRUE); |
5306 | if (expand_string_message != NULL) | |
059ec3d9 PH |
5307 | { |
5308 | if (thismessage_size_limit == -1) | |
5309 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand " | |
5310 | "message_size_limit: %s", expand_string_message); | |
5311 | else | |
5312 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "invalid value for " | |
5313 | "message_size_limit: %s", expand_string_message); | |
5314 | } | |
5315 | } | |
5316 | ||
5317 | /* Loop for several messages when reading SMTP input. If we fork any child | |
5318 | processes, we don't want to wait for them unless synchronous delivery is | |
5319 | requested, so set SIGCHLD to SIG_IGN in that case. This is not necessarily the | |
5320 | same as SIG_DFL, despite the fact that documentation often lists the default as | |
5321 | "ignore". This is a confusing area. This is what I know: | |
5322 | ||
5323 | At least on some systems (e.g. Solaris), just setting SIG_IGN causes child | |
5324 | processes that complete simply to go away without ever becoming defunct. You | |
5325 | can't then wait for them - but we don't want to wait for them in the | |
5326 | non-synchronous delivery case. However, this behaviour of SIG_IGN doesn't | |
5327 | happen for all OS (e.g. *BSD is different). | |
5328 | ||
5329 | But that's not the end of the story. Some (many? all?) systems have the | |
5330 | SA_NOCLDWAIT option for sigaction(). This requests the behaviour that Solaris | |
5331 | has by default, so it seems that the difference is merely one of default | |
5332 | (compare restarting vs non-restarting signals). | |
5333 | ||
5334 | To cover all cases, Exim sets SIG_IGN with SA_NOCLDWAIT here if it can. If not, | |
5335 | it just sets SIG_IGN. To be on the safe side it also calls waitpid() at the end | |
5336 | of the loop below. Paranoia rules. | |
5337 | ||
5338 | February 2003: That's *still* not the end of the story. There are now versions | |
5339 | of Linux (where SIG_IGN does work) that are picky. If, having set SIG_IGN, a | |
5340 | process then calls waitpid(), a grumble is written to the system log, because | |
5341 | this is logically inconsistent. In other words, it doesn't like the paranoia. | |
5342 | As a consequenc of this, the waitpid() below is now excluded if we are sure | |
5343 | that SIG_IGN works. */ | |
5344 | ||
5345 | if (!synchronous_delivery) | |
5346 | { | |
5347 | #ifdef SA_NOCLDWAIT | |
5348 | struct sigaction act; | |
5349 | act.sa_handler = SIG_IGN; | |
5350 | sigemptyset(&(act.sa_mask)); | |
5351 | act.sa_flags = SA_NOCLDWAIT; | |
5352 | sigaction(SIGCHLD, &act, NULL); | |
5353 | #else | |
5354 | signal(SIGCHLD, SIG_IGN); | |
5355 | #endif | |
5356 | } | |
5357 | ||
5358 | /* Save the current store pool point, for resetting at the start of | |
5359 | each message, and save the real sender address, if any. */ | |
5360 | ||
5361 | reset_point = store_get(0); | |
5362 | real_sender_address = sender_address; | |
5363 | ||
5364 | /* Loop to receive messages; receive_msg() returns TRUE if there are more | |
5365 | messages to be read (SMTP input), or FALSE otherwise (not SMTP, or SMTP channel | |
5366 | collapsed). */ | |
5367 | ||
5368 | while (more) | |
5369 | { | |
5370 | store_reset(reset_point); | |
5371 | message_id[0] = 0; | |
5372 | ||
273f34d0 PH |
5373 | /* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP |
5374 | input and build the recipients list, before calling receive_msg() to read the | |
5375 | message proper. Whatever sender address is given in the SMTP transaction is | |
5376 | often ignored for local senders - we use the actual sender, which is normally | |
5377 | either the underlying user running this process or a -f argument provided by | |
5378 | a trusted caller. It is saved in real_sender_address. The test for whether to | |
5379 | accept the SMTP sender is encapsulated in receive_check_set_sender(). */ | |
059ec3d9 PH |
5380 | |
5381 | if (smtp_input) | |
5382 | { | |
5383 | int rc; | |
5384 | if ((rc = smtp_setup_msg()) > 0) | |
5385 | { | |
5386 | if (real_sender_address != NULL && | |
5387 | !receive_check_set_sender(sender_address)) | |
5388 | { | |
5389 | sender_address = raw_sender = real_sender_address; | |
5390 | sender_address_unrewritten = NULL; | |
5391 | } | |
273f34d0 PH |
5392 | |
5393 | /* For batched SMTP, we have to run the acl_not_smtp_start ACL, since it | |
5394 | isn't really SMTP, so no other ACL will run until the acl_not_smtp one at | |
5395 | the very end. The result of the ACL is ignored (as for other non-SMTP | |
5396 | messages). It is run for its potential side effects. */ | |
5397 | ||
5398 | if (smtp_batched_input && acl_not_smtp_start != NULL) | |
5399 | { | |
5400 | uschar *user_msg, *log_msg; | |
5401 | enable_dollar_recipients = TRUE; | |
5402 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, | |
5403 | &user_msg, &log_msg); | |
5404 | enable_dollar_recipients = FALSE; | |
5405 | } | |
5406 | ||
5407 | /* Now get the data for the message */ | |
5408 | ||
059ec3d9 PH |
5409 | more = receive_msg(extract_recipients); |
5410 | if (message_id[0] == 0) | |
5411 | { | |
5412 | if (more) continue; | |
b4ed4da0 | 5413 | smtp_log_no_mail(); /* Log no mail if configured */ |
059ec3d9 PH |
5414 | exim_exit(EXIT_FAILURE); |
5415 | } | |
5416 | } | |
b4ed4da0 PH |
5417 | else |
5418 | { | |
5419 | smtp_log_no_mail(); /* Log no mail if configured */ | |
5420 | exim_exit((rc == 0)? EXIT_SUCCESS : EXIT_FAILURE); | |
5421 | } | |
059ec3d9 PH |
5422 | } |
5423 | ||
5424 | /* In the non-SMTP case, we have all the information from the command | |
5425 | line, but must process it in case it is in the more general RFC822 | |
5426 | format, and in any case, to detect syntax errors. Also, it appears that | |
5427 | the use of comma-separated lists as single arguments is common, so we | |
5428 | had better support them. */ | |
5429 | ||
5430 | else | |
5431 | { | |
5432 | int i; | |
5433 | int rcount = 0; | |
5434 | int count = argc - recipients_arg; | |
5435 | uschar **list = argv + recipients_arg; | |
eb2c0248 | 5436 | |
69358f02 | 5437 | /* These options cannot be changed dynamically for non-SMTP messages */ |
eb2c0248 | 5438 | |
69358f02 | 5439 | active_local_sender_retain = local_sender_retain; |
eb2c0248 | 5440 | active_local_from_check = local_from_check; |
059ec3d9 PH |
5441 | |
5442 | /* Save before any rewriting */ | |
5443 | ||
5444 | raw_sender = string_copy(sender_address); | |
5445 | ||
5446 | /* Loop for each argument */ | |
5447 | ||
5448 | for (i = 0; i < count; i++) | |
5449 | { | |
5450 | int start, end, domain; | |
5451 | uschar *errmess; | |
5452 | uschar *s = list[i]; | |
5453 | ||
5454 | /* Loop for each comma-separated address */ | |
5455 | ||
5456 | while (*s != 0) | |
5457 | { | |
5458 | BOOL finished = FALSE; | |
5459 | uschar *recipient; | |
5460 | uschar *ss = parse_find_address_end(s, FALSE); | |
5461 | ||
5462 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
5463 | ||
5464 | /* Check max recipients - if -t was used, these aren't recipients */ | |
5465 | ||
5466 | if (recipients_max > 0 && ++rcount > recipients_max && | |
5467 | !extract_recipients) | |
059ec3d9 PH |
5468 | if (error_handling == ERRORS_STDERR) |
5469 | { | |
5470 | fprintf(stderr, "exim: too many recipients\n"); | |
5471 | exim_exit(EXIT_FAILURE); | |
5472 | } | |
5473 | else | |
5474 | { | |
5475 | return | |
5476 | moan_to_sender(ERRMESS_TOOMANYRECIP, NULL, NULL, stdin, TRUE)? | |
5477 | errors_sender_rc : EXIT_FAILURE; | |
5478 | } | |
059ec3d9 | 5479 | |
8c5d388a | 5480 | #ifdef SUPPORT_I18N |
250b6871 JH |
5481 | { |
5482 | BOOL b = allow_utf8_domains; | |
5483 | allow_utf8_domains = TRUE; | |
5484 | #endif | |
059ec3d9 PH |
5485 | recipient = |
5486 | parse_extract_address(s, &errmess, &start, &end, &domain, FALSE); | |
5487 | ||
8c5d388a | 5488 | #ifdef SUPPORT_I18N |
250b6871 JH |
5489 | if (string_is_utf8(recipient)) |
5490 | message_smtputf8 = TRUE; | |
5491 | else | |
5492 | allow_utf8_domains = b; | |
5493 | } | |
5494 | #endif | |
059ec3d9 PH |
5495 | if (domain == 0 && !allow_unqualified_recipient) |
5496 | { | |
5497 | recipient = NULL; | |
5498 | errmess = US"unqualified recipient address not allowed"; | |
5499 | } | |
5500 | ||
5501 | if (recipient == NULL) | |
5502 | { | |
5503 | if (error_handling == ERRORS_STDERR) | |
5504 | { | |
5505 | fprintf(stderr, "exim: bad recipient address \"%s\": %s\n", | |
5506 | string_printing(list[i]), errmess); | |
5507 | exim_exit(EXIT_FAILURE); | |
5508 | } | |
5509 | else | |
5510 | { | |
5511 | error_block eblock; | |
5512 | eblock.next = NULL; | |
5513 | eblock.text1 = string_printing(list[i]); | |
5514 | eblock.text2 = errmess; | |
5515 | return | |
5516 | moan_to_sender(ERRMESS_BADARGADDRESS, &eblock, NULL, stdin, TRUE)? | |
5517 | errors_sender_rc : EXIT_FAILURE; | |
5518 | } | |
5519 | } | |
5520 | ||
5521 | receive_add_recipient(recipient, -1); | |
5522 | s = ss; | |
5523 | if (!finished) | |
5524 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
5525 | } | |
5526 | } | |
5527 | ||
5528 | /* Show the recipients when debugging */ | |
5529 | ||
5530 | DEBUG(D_receive) | |
5531 | { | |
5532 | int i; | |
5533 | if (sender_address != NULL) debug_printf("Sender: %s\n", sender_address); | |
5534 | if (recipients_list != NULL) | |
5535 | { | |
5536 | debug_printf("Recipients:\n"); | |
5537 | for (i = 0; i < recipients_count; i++) | |
5538 | debug_printf(" %s\n", recipients_list[i].address); | |
5539 | } | |
5540 | } | |
5541 | ||
45b91596 PH |
5542 | /* Run the acl_not_smtp_start ACL if required. The result of the ACL is |
5543 | ignored; rejecting here would just add complication, and it can just as | |
5544 | well be done later. Allow $recipients to be visible in the ACL. */ | |
5545 | ||
5546 | if (acl_not_smtp_start != NULL) | |
5547 | { | |
5548 | uschar *user_msg, *log_msg; | |
5549 | enable_dollar_recipients = TRUE; | |
5550 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, | |
5551 | &user_msg, &log_msg); | |
5552 | enable_dollar_recipients = FALSE; | |
5553 | } | |
5554 | ||
f05da2e8 PH |
5555 | /* Read the data for the message. If filter_test is not FTEST_NONE, this |
5556 | will just read the headers for the message, and not write anything onto the | |
5557 | spool. */ | |
059ec3d9 PH |
5558 | |
5559 | message_ended = END_NOTENDED; | |
5560 | more = receive_msg(extract_recipients); | |
5561 | ||
5562 | /* more is always FALSE here (not SMTP message) when reading a message | |
5563 | for real; when reading the headers of a message for filter testing, | |
5564 | it is TRUE if the headers were terminated by '.' and FALSE otherwise. */ | |
5565 | ||
5566 | if (message_id[0] == 0) exim_exit(EXIT_FAILURE); | |
5567 | } /* Non-SMTP message reception */ | |
5568 | ||
5569 | /* If this is a filter testing run, there are headers in store, but | |
5570 | no message on the spool. Run the filtering code in testing mode, setting | |
5571 | the domain to the qualify domain and the local part to the current user, | |
5572 | unless they have been set by options. The prefix and suffix are left unset | |
5573 | unless specified. The the return path is set to to the sender unless it has | |
5574 | already been set from a return-path header in the message. */ | |
5575 | ||
f05da2e8 | 5576 | if (filter_test != FTEST_NONE) |
059ec3d9 PH |
5577 | { |
5578 | deliver_domain = (ftest_domain != NULL)? | |
5579 | ftest_domain : qualify_domain_recipient; | |
5580 | deliver_domain_orig = deliver_domain; | |
5581 | deliver_localpart = (ftest_localpart != NULL)? | |
5582 | ftest_localpart : originator_login; | |
5583 | deliver_localpart_orig = deliver_localpart; | |
5584 | deliver_localpart_prefix = ftest_prefix; | |
5585 | deliver_localpart_suffix = ftest_suffix; | |
5586 | deliver_home = originator_home; | |
5587 | ||
5588 | if (return_path == NULL) | |
5589 | { | |
5590 | printf("Return-path copied from sender\n"); | |
5591 | return_path = string_copy(sender_address); | |
5592 | } | |
5593 | else | |
059ec3d9 | 5594 | printf("Return-path = %s\n", (return_path[0] == 0)? US"<>" : return_path); |
059ec3d9 PH |
5595 | printf("Sender = %s\n", (sender_address[0] == 0)? US"<>" : sender_address); |
5596 | ||
5597 | receive_add_recipient( | |
5598 | string_sprintf("%s%s%s@%s", | |
5599 | (ftest_prefix == NULL)? US"" : ftest_prefix, | |
5600 | deliver_localpart, | |
5601 | (ftest_suffix == NULL)? US"" : ftest_suffix, | |
5602 | deliver_domain), -1); | |
5603 | ||
5604 | printf("Recipient = %s\n", recipients_list[0].address); | |
5605 | if (ftest_prefix != NULL) printf("Prefix = %s\n", ftest_prefix); | |
5606 | if (ftest_suffix != NULL) printf("Suffix = %s\n", ftest_suffix); | |
5607 | ||
1ac6b2e7 JH |
5608 | if (chdir("/")) /* Get away from wherever the user is running this from */ |
5609 | { | |
5610 | DEBUG(D_receive) debug_printf("chdir(\"/\") failed\n"); | |
5611 | exim_exit(EXIT_FAILURE); | |
5612 | } | |
8e669ac1 PH |
5613 | |
5614 | /* Now we run either a system filter test, or a user filter test, or both. | |
5615 | In the latter case, headers added by the system filter will persist and be | |
5616 | available to the user filter. We need to copy the filter variables | |
f05da2e8 | 5617 | explicitly. */ |
8e669ac1 | 5618 | |
f05da2e8 PH |
5619 | if ((filter_test & FTEST_SYSTEM) != 0) |
5620 | { | |
5621 | if (!filter_runtest(filter_sfd, filter_test_sfile, TRUE, more)) | |
5622 | exim_exit(EXIT_FAILURE); | |
8e669ac1 PH |
5623 | } |
5624 | ||
f05da2e8 | 5625 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); |
8e669ac1 | 5626 | |
f05da2e8 PH |
5627 | if ((filter_test & FTEST_USER) != 0) |
5628 | { | |
5629 | if (!filter_runtest(filter_ufd, filter_test_ufile, FALSE, more)) | |
5630 | exim_exit(EXIT_FAILURE); | |
8e669ac1 PH |
5631 | } |
5632 | ||
f05da2e8 | 5633 | exim_exit(EXIT_SUCCESS); |
059ec3d9 PH |
5634 | } |
5635 | ||
5636 | /* Else act on the result of message reception. We should not get here unless | |
8669f003 PH |
5637 | message_id[0] is non-zero. If queue_only is set, session_local_queue_only |
5638 | will be TRUE. If it is not, check on the number of messages received in this | |
5639 | connection. */ | |
5640 | ||
5641 | if (!session_local_queue_only && | |
5642 | smtp_accept_queue_per_connection > 0 && | |
5643 | receive_messagecount > smtp_accept_queue_per_connection) | |
059ec3d9 | 5644 | { |
8669f003 PH |
5645 | session_local_queue_only = TRUE; |
5646 | queue_only_reason = 2; | |
5647 | } | |
5648 | ||
5649 | /* Initialize local_queue_only from session_local_queue_only. If it is false, | |
5650 | and queue_only_load is set, check that the load average is below it. If it is | |
5651 | not, set local_queue_only TRUE. If queue_only_load_latch is true (the | |
5652 | default), we put the whole session into queue_only mode. It then remains this | |
5653 | way for any subsequent messages on the same SMTP connection. This is a | |
5654 | deliberate choice; even though the load average may fall, it doesn't seem | |
5655 | right to deliver later messages on the same call when not delivering earlier | |
5656 | ones. However, there are odd cases where this is not wanted, so this can be | |
5657 | changed by setting queue_only_load_latch false. */ | |
5658 | ||
5659 | local_queue_only = session_local_queue_only; | |
5660 | if (!local_queue_only && queue_only_load >= 0) | |
5661 | { | |
5662 | local_queue_only = (load_average = OS_GETLOADAVG()) > queue_only_load; | |
5663 | if (local_queue_only) | |
059ec3d9 | 5664 | { |
8669f003 PH |
5665 | queue_only_reason = 3; |
5666 | if (queue_only_load_latch) session_local_queue_only = TRUE; | |
059ec3d9 PH |
5667 | } |
5668 | } | |
5669 | ||
5670 | /* If running as an MUA wrapper, all queueing options and freezing options | |
5671 | are ignored. */ | |
5672 | ||
5673 | if (mua_wrapper) | |
5674 | local_queue_only = queue_only_policy = deliver_freeze = FALSE; | |
5675 | ||
5676 | /* Log the queueing here, when it will get a message id attached, but | |
5677 | not if queue_only is set (case 0). Case 1 doesn't happen here (too many | |
5678 | connections). */ | |
5679 | ||
5680 | if (local_queue_only) switch(queue_only_reason) | |
5681 | { | |
5682 | case 2: | |
5683 | log_write(L_delay_delivery, | |
5684 | LOG_MAIN, "no immediate delivery: more than %d messages " | |
5685 | "received in one connection", smtp_accept_queue_per_connection); | |
5686 | break; | |
5687 | ||
5688 | case 3: | |
5689 | log_write(L_delay_delivery, | |
5690 | LOG_MAIN, "no immediate delivery: load average %.2f", | |
5691 | (double)load_average/1000.0); | |
5692 | break; | |
5693 | } | |
5694 | ||
5695 | /* Else do the delivery unless the ACL or local_scan() called for queue only | |
5696 | or froze the message. Always deliver in a separate process. A fork failure is | |
5697 | not a disaster, as the delivery will eventually happen on a subsequent queue | |
eb2c0248 PH |
5698 | run. The search cache must be tidied before the fork, as the parent will |
5699 | do it before exiting. The child will trigger a lookup failure and | |
5700 | thereby defer the delivery if it tries to use (for example) a cached ldap | |
5701 | connection that the parent has called unbind on. */ | |
059ec3d9 PH |
5702 | |
5703 | else if (!queue_only_policy && !deliver_freeze) | |
5704 | { | |
5705 | pid_t pid; | |
eb2c0248 PH |
5706 | search_tidyup(); |
5707 | ||
059ec3d9 PH |
5708 | if ((pid = fork()) == 0) |
5709 | { | |
5710 | int rc; | |
5711 | close_unwanted(); /* Close unwanted file descriptors and TLS */ | |
5712 | exim_nullstd(); /* Ensure std{in,out,err} exist */ | |
5713 | ||
5714 | /* Re-exec Exim if we need to regain privilege (note: in mua_wrapper | |
5715 | mode, deliver_drop_privilege is forced TRUE). */ | |
5716 | ||
5717 | if (geteuid() != root_uid && !deliver_drop_privilege && !unprivileged) | |
5718 | { | |
e37f8a84 JH |
5719 | (void)child_exec_exim(CEE_EXEC_EXIT, FALSE, NULL, FALSE, |
5720 | 2, US"-Mc", message_id); | |
059ec3d9 PH |
5721 | /* Control does not return here. */ |
5722 | } | |
5723 | ||
5724 | /* No need to re-exec */ | |
5725 | ||
5726 | rc = deliver_message(message_id, FALSE, FALSE); | |
5727 | search_tidyup(); | |
5728 | _exit((!mua_wrapper || rc == DELIVER_MUA_SUCCEEDED)? | |
5729 | EXIT_SUCCESS : EXIT_FAILURE); | |
5730 | } | |
5731 | ||
5732 | if (pid < 0) | |
5733 | { | |
5734 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fork automatic delivery " | |
5735 | "process: %s", strerror(errno)); | |
5736 | } | |
5737 | ||
5738 | /* In the parent, wait if synchronous delivery is required. This will | |
5739 | always be the case in MUA wrapper mode. */ | |
5740 | ||
5741 | else if (synchronous_delivery) | |
5742 | { | |
5743 | int status; | |
5744 | while (wait(&status) != pid); | |
5745 | if ((status & 0x00ff) != 0) | |
5746 | log_write(0, LOG_MAIN|LOG_PANIC, | |
5747 | "process %d crashed with signal %d while delivering %s", | |
5748 | (int)pid, status & 0x00ff, message_id); | |
5749 | if (mua_wrapper && (status & 0xffff) != 0) exim_exit(EXIT_FAILURE); | |
5750 | } | |
5751 | } | |
5752 | ||
5753 | /* The loop will repeat if more is TRUE. If we do not know know that the OS | |
5754 | automatically reaps children (see comments above the loop), clear away any | |
5755 | finished subprocesses here, in case there are lots of messages coming in | |
5756 | from the same source. */ | |
5757 | ||
5758 | #ifndef SIG_IGN_WORKS | |
5759 | while (waitpid(-1, NULL, WNOHANG) > 0); | |
5760 | #endif | |
5761 | } | |
5762 | ||
5763 | exim_exit(EXIT_SUCCESS); /* Never returns */ | |
5764 | return 0; /* To stop compiler warning */ | |
5765 | } | |
5766 | ||
5767 | /* End of exim.c */ |