Commit | Line | Data |
---|---|---|
059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
f9ba5e22 | 5 | /* Copyright (c) University of Cambridge 1995 - 2018 */ |
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 | ||
98913c8e | 15 | #if defined(__GLIBC__) && !defined(__UCLIBC__) |
01f3091a JH |
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, | |
ee8b8090 | 143 | PCRE_EOPT | options, ovector, nelem(ovector)); |
059ec3d9 PH |
144 | BOOL yield = n >= 0; |
145 | if (n == 0) n = EXPAND_MAXN + 1; | |
146 | if (yield) | |
147 | { | |
ee8b8090 | 148 | expand_nmax = setup < 0 ? 0 : setup + 1; |
d7978c0f | 149 | for (int nn = setup < 0 ? 0 : 2; nn < n*2; nn += 2) |
059ec3d9 | 150 | { |
1dc92d5a | 151 | expand_nstring[expand_nmax] = s + ovector[nn]; |
059ec3d9 PH |
152 | expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn]; |
153 | } | |
154 | expand_nmax--; | |
155 | } | |
156 | return yield; | |
157 | } | |
158 | ||
159 | ||
160 | ||
161 | ||
921b12ca TF |
162 | /************************************************* |
163 | * Set up processing details * | |
164 | *************************************************/ | |
165 | ||
166 | /* Save a text string for dumping when SIGUSR1 is received. | |
167 | Do checks for overruns. | |
168 | ||
169 | Arguments: format and arguments, as for printf() | |
170 | Returns: nothing | |
171 | */ | |
172 | ||
173 | void | |
174 | set_process_info(const char *format, ...) | |
175 | { | |
d12746bc JH |
176 | gstring gs = { .size = PROCESS_INFO_SIZE - 2, .ptr = 0, .s = process_info }; |
177 | gstring * g; | |
178 | int len; | |
921b12ca | 179 | va_list ap; |
d12746bc JH |
180 | |
181 | g = string_fmt_append(&gs, "%5d ", (int)getpid()); | |
182 | len = g->ptr; | |
921b12ca | 183 | va_start(ap, format); |
d12746bc JH |
184 | if (!string_vformat(g, FALSE, format, ap)) |
185 | { | |
186 | gs.ptr = len; | |
187 | g = string_cat(&gs, US"**** string overflowed buffer ****"); | |
188 | } | |
189 | g = string_catn(g, US"\n", 1); | |
190 | string_from_gstring(g); | |
191 | process_info_len = g->ptr; | |
921b12ca TF |
192 | DEBUG(D_process_info) debug_printf("set_process_info: %s", process_info); |
193 | va_end(ap); | |
194 | } | |
195 | ||
830832c9 HSHR |
196 | /*********************************************** |
197 | * Handler for SIGTERM * | |
198 | ***********************************************/ | |
921b12ca | 199 | |
830832c9 HSHR |
200 | static void |
201 | term_handler(int sig) | |
202 | { | |
203 | exit(1); | |
204 | } | |
921b12ca TF |
205 | |
206 | ||
059ec3d9 PH |
207 | /************************************************* |
208 | * Handler for SIGUSR1 * | |
209 | *************************************************/ | |
210 | ||
211 | /* SIGUSR1 causes any exim process to write to the process log details of | |
212 | what it is currently doing. It will only be used if the OS is capable of | |
213 | setting up a handler that causes automatic restarting of any system call | |
214 | that is in progress at the time. | |
215 | ||
921b12ca TF |
216 | This function takes care to be signal-safe. |
217 | ||
059ec3d9 PH |
218 | Argument: the signal number (SIGUSR1) |
219 | Returns: nothing | |
220 | */ | |
221 | ||
222 | static void | |
223 | usr1_handler(int sig) | |
224 | { | |
921b12ca TF |
225 | int fd; |
226 | ||
227 | os_restarting_signal(sig, usr1_handler); | |
228 | ||
cab0c277 | 229 | if ((fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE)) < 0) |
921b12ca TF |
230 | { |
231 | /* If we are already running as the Exim user, try to create it in the | |
232 | current process (assuming spool_directory exists). Otherwise, if we are | |
233 | root, do the creation in an exim:exim subprocess. */ | |
234 | ||
235 | int euid = geteuid(); | |
236 | if (euid == exim_uid) | |
237 | fd = Uopen(process_log_path, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE); | |
238 | else if (euid == root_uid) | |
239 | fd = log_create_as_exim(process_log_path); | |
240 | } | |
241 | ||
242 | /* If we are neither exim nor root, or if we failed to create the log file, | |
243 | give up. There is not much useful we can do with errors, since we don't want | |
244 | to disrupt whatever is going on outside the signal handler. */ | |
245 | ||
246 | if (fd < 0) return; | |
247 | ||
2f21487f | 248 | (void)write(fd, process_info, process_info_len); |
921b12ca | 249 | (void)close(fd); |
059ec3d9 PH |
250 | } |
251 | ||
252 | ||
253 | ||
254 | /************************************************* | |
255 | * Timeout handler * | |
256 | *************************************************/ | |
257 | ||
258 | /* This handler is enabled most of the time that Exim is running. The handler | |
259 | doesn't actually get used unless alarm() has been called to set a timer, to | |
260 | place a time limit on a system call of some kind. When the handler is run, it | |
261 | re-enables itself. | |
262 | ||
263 | There are some other SIGALRM handlers that are used in special cases when more | |
264 | than just a flag setting is required; for example, when reading a message's | |
265 | input. These are normally set up in the code module that uses them, and the | |
266 | SIGALRM handler is reset to this one afterwards. | |
267 | ||
268 | Argument: the signal value (SIGALRM) | |
269 | Returns: nothing | |
270 | */ | |
271 | ||
272 | void | |
273 | sigalrm_handler(int sig) | |
274 | { | |
275 | sig = sig; /* Keep picky compilers happy */ | |
276 | sigalrm_seen = TRUE; | |
277 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
278 | } | |
279 | ||
280 | ||
281 | ||
282 | /************************************************* | |
283 | * Sleep for a fractional time interval * | |
284 | *************************************************/ | |
285 | ||
286 | /* This function is called by millisleep() and exim_wait_tick() to wait for a | |
287 | period of time that may include a fraction of a second. The coding is somewhat | |
eb2c0248 PH |
288 | tedious. We do not expect setitimer() ever to fail, but if it does, the process |
289 | will wait for ever, so we panic in this instance. (There was a case of this | |
290 | when a bug in a function that calls milliwait() caused it to pass invalid data. | |
7086e875 | 291 | That's when I added the check. :-) |
059ec3d9 | 292 | |
0f8ba377 JH |
293 | We assume it to be not worth sleeping for under 100us; this value will |
294 | require revisiting as hardware advances. This avoids the issue of | |
295 | a zero-valued timer setting meaning "never fire". | |
296 | ||
059ec3d9 PH |
297 | Argument: an itimerval structure containing the interval |
298 | Returns: nothing | |
299 | */ | |
300 | ||
301 | static void | |
302 | milliwait(struct itimerval *itval) | |
303 | { | |
304 | sigset_t sigmask; | |
305 | sigset_t old_sigmask; | |
0f8ba377 JH |
306 | |
307 | if (itval->it_value.tv_usec < 100 && itval->it_value.tv_sec == 0) | |
308 | return; | |
059ec3d9 PH |
309 | (void)sigemptyset(&sigmask); /* Empty mask */ |
310 | (void)sigaddset(&sigmask, SIGALRM); /* Add SIGALRM */ | |
311 | (void)sigprocmask(SIG_BLOCK, &sigmask, &old_sigmask); /* Block SIGALRM */ | |
7086e875 | 312 | if (setitimer(ITIMER_REAL, itval, NULL) < 0) /* Start timer */ |
eb2c0248 PH |
313 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
314 | "setitimer() failed: %s", strerror(errno)); | |
059ec3d9 PH |
315 | (void)sigfillset(&sigmask); /* All signals */ |
316 | (void)sigdelset(&sigmask, SIGALRM); /* Remove SIGALRM */ | |
317 | (void)sigsuspend(&sigmask); /* Until SIGALRM */ | |
318 | (void)sigprocmask(SIG_SETMASK, &old_sigmask, NULL); /* Restore mask */ | |
319 | } | |
320 | ||
321 | ||
322 | ||
323 | ||
324 | /************************************************* | |
325 | * Millisecond sleep function * | |
326 | *************************************************/ | |
327 | ||
328 | /* The basic sleep() function has a granularity of 1 second, which is too rough | |
329 | in some cases - for example, when using an increasing delay to slow down | |
330 | spammers. | |
331 | ||
332 | Argument: number of millseconds | |
333 | Returns: nothing | |
334 | */ | |
335 | ||
336 | void | |
337 | millisleep(int msec) | |
338 | { | |
339 | struct itimerval itval; | |
340 | itval.it_interval.tv_sec = 0; | |
341 | itval.it_interval.tv_usec = 0; | |
342 | itval.it_value.tv_sec = msec/1000; | |
343 | itval.it_value.tv_usec = (msec % 1000) * 1000; | |
344 | milliwait(&itval); | |
345 | } | |
346 | ||
347 | ||
348 | ||
349 | /************************************************* | |
350 | * Compare microsecond times * | |
351 | *************************************************/ | |
352 | ||
353 | /* | |
354 | Arguments: | |
355 | tv1 the first time | |
356 | tv2 the second time | |
357 | ||
358 | Returns: -1, 0, or +1 | |
359 | */ | |
360 | ||
32dfdf8b | 361 | static int |
059ec3d9 PH |
362 | exim_tvcmp(struct timeval *t1, struct timeval *t2) |
363 | { | |
364 | if (t1->tv_sec > t2->tv_sec) return +1; | |
365 | if (t1->tv_sec < t2->tv_sec) return -1; | |
366 | if (t1->tv_usec > t2->tv_usec) return +1; | |
367 | if (t1->tv_usec < t2->tv_usec) return -1; | |
368 | return 0; | |
369 | } | |
370 | ||
371 | ||
372 | ||
373 | ||
374 | /************************************************* | |
375 | * Clock tick wait function * | |
376 | *************************************************/ | |
377 | ||
378 | /* Exim uses a time + a pid to generate a unique identifier in two places: its | |
379 | message IDs, and in file names for maildir deliveries. Because some OS now | |
380 | re-use pids within the same second, sub-second times are now being used. | |
4c04137d | 381 | However, for absolute certainty, we must ensure the clock has ticked before |
059ec3d9 PH |
382 | allowing the relevant process to complete. At the time of implementation of |
383 | this code (February 2003), the speed of processors is such that the clock will | |
384 | invariably have ticked already by the time a process has done its job. This | |
385 | function prepares for the time when things are faster - and it also copes with | |
386 | clocks that go backwards. | |
387 | ||
388 | Arguments: | |
389 | then_tv A timeval which was used to create uniqueness; its usec field | |
390 | has been rounded down to the value of the resolution. | |
391 | We want to be sure the current time is greater than this. | |
392 | resolution The resolution that was used to divide the microseconds | |
393 | (1 for maildir, larger for message ids) | |
394 | ||
395 | Returns: nothing | |
396 | */ | |
397 | ||
398 | void | |
399 | exim_wait_tick(struct timeval *then_tv, int resolution) | |
400 | { | |
401 | struct timeval now_tv; | |
402 | long int now_true_usec; | |
403 | ||
404 | (void)gettimeofday(&now_tv, NULL); | |
405 | now_true_usec = now_tv.tv_usec; | |
406 | now_tv.tv_usec = (now_true_usec/resolution) * resolution; | |
407 | ||
408 | if (exim_tvcmp(&now_tv, then_tv) <= 0) | |
409 | { | |
410 | struct itimerval itval; | |
411 | itval.it_interval.tv_sec = 0; | |
412 | itval.it_interval.tv_usec = 0; | |
413 | itval.it_value.tv_sec = then_tv->tv_sec - now_tv.tv_sec; | |
414 | itval.it_value.tv_usec = then_tv->tv_usec + resolution - now_true_usec; | |
415 | ||
416 | /* We know that, overall, "now" is less than or equal to "then". Therefore, a | |
417 | negative value for the microseconds is possible only in the case when "now" | |
418 | is more than a second less than "then". That means that itval.it_value.tv_sec | |
419 | is greater than zero. The following correction is therefore safe. */ | |
420 | ||
421 | if (itval.it_value.tv_usec < 0) | |
422 | { | |
423 | itval.it_value.tv_usec += 1000000; | |
424 | itval.it_value.tv_sec -= 1; | |
425 | } | |
426 | ||
427 | DEBUG(D_transport|D_receive) | |
428 | { | |
8768d548 | 429 | if (!f.running_in_test_harness) |
059ec3d9 | 430 | { |
d0291a0a | 431 | debug_printf("tick check: " TIME_T_FMT ".%06lu " TIME_T_FMT ".%06lu\n", |
7437665e JH |
432 | then_tv->tv_sec, (long) then_tv->tv_usec, |
433 | now_tv.tv_sec, (long) now_tv.tv_usec); | |
d0291a0a JH |
434 | debug_printf("waiting " TIME_T_FMT ".%06lu\n", |
435 | itval.it_value.tv_sec, (long) itval.it_value.tv_usec); | |
059ec3d9 PH |
436 | } |
437 | } | |
438 | ||
439 | milliwait(&itval); | |
440 | } | |
441 | } | |
442 | ||
443 | ||
444 | ||
445 | ||
2632889e PH |
446 | /************************************************* |
447 | * Call fopen() with umask 777 and adjust mode * | |
448 | *************************************************/ | |
449 | ||
450 | /* Exim runs with umask(0) so that files created with open() have the mode that | |
451 | is specified in the open() call. However, there are some files, typically in | |
452 | the spool directory, that are created with fopen(). They end up world-writeable | |
453 | if no precautions are taken. Although the spool directory is not accessible to | |
454 | the world, this is an untidiness. So this is a wrapper function for fopen() | |
455 | that sorts out the mode of the created file. | |
456 | ||
457 | Arguments: | |
458 | filename the file name | |
459 | options the fopen() options | |
460 | mode the required mode | |
461 | ||
462 | Returns: the fopened FILE or NULL | |
463 | */ | |
464 | ||
465 | FILE * | |
1ba28e2b | 466 | modefopen(const uschar *filename, const char *options, mode_t mode) |
2632889e | 467 | { |
67d175de PH |
468 | mode_t saved_umask = umask(0777); |
469 | FILE *f = Ufopen(filename, options); | |
470 | (void)umask(saved_umask); | |
2632889e PH |
471 | if (f != NULL) (void)fchmod(fileno(f), mode); |
472 | return f; | |
473 | } | |
474 | ||
475 | ||
476 | ||
477 | ||
059ec3d9 PH |
478 | /************************************************* |
479 | * Ensure stdin, stdout, and stderr exist * | |
480 | *************************************************/ | |
481 | ||
482 | /* Some operating systems grumble if an exec() happens without a standard | |
483 | input, output, and error (fds 0, 1, 2) being defined. The worry is that some | |
484 | file will be opened and will use these fd values, and then some other bit of | |
485 | code will assume, for example, that it can write error messages to stderr. | |
486 | This function ensures that fds 0, 1, and 2 are open if they do not already | |
487 | exist, by connecting them to /dev/null. | |
488 | ||
489 | This function is also used to ensure that std{in,out,err} exist at all times, | |
490 | so that if any library that Exim calls tries to use them, it doesn't crash. | |
491 | ||
492 | Arguments: None | |
493 | Returns: Nothing | |
494 | */ | |
495 | ||
496 | void | |
497 | exim_nullstd(void) | |
498 | { | |
059ec3d9 PH |
499 | int devnull = -1; |
500 | struct stat statbuf; | |
d7978c0f | 501 | for (int i = 0; i <= 2; i++) |
059ec3d9 PH |
502 | { |
503 | if (fstat(i, &statbuf) < 0 && errno == EBADF) | |
504 | { | |
505 | if (devnull < 0) devnull = open("/dev/null", O_RDWR); | |
506 | if (devnull < 0) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", | |
507 | string_open_failed(errno, "/dev/null")); | |
1fe64dcc | 508 | if (devnull != i) (void)dup2(devnull, i); |
059ec3d9 PH |
509 | } |
510 | } | |
1fe64dcc | 511 | if (devnull > 2) (void)close(devnull); |
059ec3d9 PH |
512 | } |
513 | ||
514 | ||
515 | ||
516 | ||
517 | /************************************************* | |
518 | * Close unwanted file descriptors for delivery * | |
519 | *************************************************/ | |
520 | ||
521 | /* This function is called from a new process that has been forked to deliver | |
522 | an incoming message, either directly, or using exec. | |
523 | ||
524 | We want any smtp input streams to be closed in this new process. However, it | |
525 | has been observed that using fclose() here causes trouble. When reading in -bS | |
526 | input, duplicate copies of messages have been seen. The files will be sharing a | |
527 | file pointer with the parent process, and it seems that fclose() (at least on | |
528 | some systems - I saw this on Solaris 2.5.1) messes with that file pointer, at | |
529 | least sometimes. Hence we go for closing the underlying file descriptors. | |
530 | ||
531 | If TLS is active, we want to shut down the TLS library, but without molesting | |
532 | the parent's SSL connection. | |
533 | ||
534 | For delivery of a non-SMTP message, we want to close stdin and stdout (and | |
535 | stderr unless debugging) because the calling process might have set them up as | |
536 | pipes and be waiting for them to close before it waits for the submission | |
537 | process to terminate. If they aren't closed, they hold up the calling process | |
538 | until the initial delivery process finishes, which is not what we want. | |
539 | ||
540 | Exception: We do want it for synchronous delivery! | |
541 | ||
542 | And notwithstanding all the above, if D_resolver is set, implying resolver | |
543 | debugging, leave stdout open, because that's where the resolver writes its | |
544 | debugging output. | |
545 | ||
546 | When we close stderr (which implies we've also closed stdout), we also get rid | |
547 | of any controlling terminal. | |
548 | ||
549 | Arguments: None | |
550 | Returns: Nothing | |
551 | */ | |
552 | ||
553 | static void | |
554 | close_unwanted(void) | |
555 | { | |
556 | if (smtp_input) | |
557 | { | |
74f1a423 JH |
558 | #ifdef SUPPORT_TLS |
559 | tls_close(NULL, TLS_NO_SHUTDOWN); /* Shut down the TLS library */ | |
560 | #endif | |
1fe64dcc PH |
561 | (void)close(fileno(smtp_in)); |
562 | (void)close(fileno(smtp_out)); | |
059ec3d9 PH |
563 | smtp_in = NULL; |
564 | } | |
565 | else | |
566 | { | |
1fe64dcc PH |
567 | (void)close(0); /* stdin */ |
568 | if ((debug_selector & D_resolver) == 0) (void)close(1); /* stdout */ | |
569 | if (debug_selector == 0) /* stderr */ | |
059ec3d9 | 570 | { |
8768d548 | 571 | if (!f.synchronous_delivery) |
059ec3d9 | 572 | { |
1fe64dcc | 573 | (void)close(2); |
059ec3d9 PH |
574 | log_stderr = NULL; |
575 | } | |
576 | (void)setsid(); | |
577 | } | |
578 | } | |
579 | } | |
580 | ||
581 | ||
582 | ||
583 | ||
584 | /************************************************* | |
585 | * Set uid and gid * | |
586 | *************************************************/ | |
587 | ||
588 | /* This function sets a new uid and gid permanently, optionally calling | |
589 | initgroups() to set auxiliary groups. There are some special cases when running | |
590 | Exim in unprivileged modes. In these situations the effective uid will not be | |
591 | root; if we already have the right effective uid/gid, and don't need to | |
592 | initialize any groups, leave things as they are. | |
593 | ||
594 | Arguments: | |
595 | uid the uid | |
596 | gid the gid | |
597 | igflag TRUE if initgroups() wanted | |
598 | msg text to use in debugging output and failure log | |
599 | ||
600 | Returns: nothing; bombs out on failure | |
601 | */ | |
602 | ||
603 | void | |
604 | exim_setugid(uid_t uid, gid_t gid, BOOL igflag, uschar *msg) | |
605 | { | |
606 | uid_t euid = geteuid(); | |
607 | gid_t egid = getegid(); | |
608 | ||
609 | if (euid == root_uid || euid != uid || egid != gid || igflag) | |
610 | { | |
611 | /* At least one OS returns +1 for initgroups failure, so just check for | |
612 | non-zero. */ | |
613 | ||
614 | if (igflag) | |
615 | { | |
616 | struct passwd *pw = getpwuid(uid); | |
9af3c549 JH |
617 | if (!pw) |
618 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "cannot run initgroups(): " | |
619 | "no passwd entry for uid=%ld", (long int)uid); | |
620 | ||
621 | if (initgroups(pw->pw_name, gid) != 0) | |
622 | log_write(0,LOG_MAIN|LOG_PANIC_DIE,"initgroups failed for uid=%ld: %s", | |
623 | (long int)uid, strerror(errno)); | |
059ec3d9 PH |
624 | } |
625 | ||
626 | if (setgid(gid) < 0 || setuid(uid) < 0) | |
059ec3d9 PH |
627 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "unable to set gid=%ld or uid=%ld " |
628 | "(euid=%ld): %s", (long int)gid, (long int)uid, (long int)euid, msg); | |
059ec3d9 PH |
629 | } |
630 | ||
631 | /* Debugging output included uid/gid and all groups */ | |
632 | ||
633 | DEBUG(D_uid) | |
634 | { | |
cd59ab18 | 635 | int group_count, save_errno; |
157d73b5 | 636 | gid_t group_list[EXIM_GROUPLIST_SIZE]; |
059ec3d9 PH |
637 | debug_printf("changed uid/gid: %s\n uid=%ld gid=%ld pid=%ld\n", msg, |
638 | (long int)geteuid(), (long int)getegid(), (long int)getpid()); | |
157d73b5 | 639 | group_count = getgroups(nelem(group_list), group_list); |
cd59ab18 | 640 | save_errno = errno; |
059ec3d9 PH |
641 | debug_printf(" auxiliary group list:"); |
642 | if (group_count > 0) | |
d7978c0f | 643 | for (int i = 0; i < group_count; i++) debug_printf(" %d", (int)group_list[i]); |
cd59ab18 PP |
644 | else if (group_count < 0) |
645 | debug_printf(" <error: %s>", strerror(save_errno)); | |
059ec3d9 PH |
646 | else debug_printf(" <none>"); |
647 | debug_printf("\n"); | |
648 | } | |
649 | } | |
650 | ||
651 | ||
652 | ||
653 | ||
654 | /************************************************* | |
655 | * Exit point * | |
656 | *************************************************/ | |
657 | ||
658 | /* Exim exits via this function so that it always clears up any open | |
659 | databases. | |
660 | ||
661 | Arguments: | |
662 | rc return code | |
663 | ||
664 | Returns: does not return | |
665 | */ | |
666 | ||
667 | void | |
9bfb7e1b | 668 | exim_exit(int rc, const uschar * process) |
059ec3d9 PH |
669 | { |
670 | search_tidyup(); | |
671 | DEBUG(D_any) | |
9bfb7e1b JH |
672 | debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d %s%s%sterminating with rc=%d " |
673 | ">>>>>>>>>>>>>>>>\n", (int)getpid(), | |
674 | process ? "(" : "", process, process ? ") " : "", rc); | |
059ec3d9 PH |
675 | exit(rc); |
676 | } | |
677 | ||
678 | ||
679 | ||
9af3c549 JH |
680 | /* Print error string, then die */ |
681 | static void | |
682 | exim_fail(const char * fmt, ...) | |
683 | { | |
684 | va_list ap; | |
685 | va_start(ap, fmt); | |
686 | vfprintf(stderr, fmt, ap); | |
687 | exit(EXIT_FAILURE); | |
688 | } | |
689 | ||
690 | ||
059ec3d9 PH |
691 | |
692 | /************************************************* | |
693 | * Extract port from host address * | |
694 | *************************************************/ | |
695 | ||
696 | /* Called to extract the port from the values given to -oMa and -oMi. | |
b90c388a PH |
697 | It also checks the syntax of the address, and terminates it before the |
698 | port data when a port is extracted. | |
059ec3d9 PH |
699 | |
700 | Argument: | |
701 | address the address, with possible port on the end | |
702 | ||
703 | Returns: the port, or zero if there isn't one | |
704 | bombs out on a syntax error | |
705 | */ | |
706 | ||
707 | static int | |
708 | check_port(uschar *address) | |
709 | { | |
7cd1141b | 710 | int port = host_address_extract_port(address); |
8e669ac1 | 711 | if (string_is_ip_address(address, NULL) == 0) |
9af3c549 | 712 | exim_fail("exim abandoned: \"%s\" is not an IP address\n", address); |
059ec3d9 PH |
713 | return port; |
714 | } | |
715 | ||
716 | ||
717 | ||
718 | /************************************************* | |
719 | * Test/verify an address * | |
720 | *************************************************/ | |
721 | ||
722 | /* This function is called by the -bv and -bt code. It extracts a working | |
723 | address from a full RFC 822 address. This isn't really necessary per se, but it | |
724 | has the effect of collapsing source routes. | |
725 | ||
726 | Arguments: | |
727 | s the address string | |
728 | flags flag bits for verify_address() | |
729 | exit_value to be set for failures | |
730 | ||
a5a28604 | 731 | Returns: nothing |
059ec3d9 PH |
732 | */ |
733 | ||
734 | static void | |
735 | test_address(uschar *s, int flags, int *exit_value) | |
736 | { | |
737 | int start, end, domain; | |
738 | uschar *parse_error = NULL; | |
739 | uschar *address = parse_extract_address(s, &parse_error, &start, &end, &domain, | |
740 | FALSE); | |
741 | if (address == NULL) | |
742 | { | |
743 | fprintf(stdout, "syntax error: %s\n", parse_error); | |
744 | *exit_value = 2; | |
745 | } | |
746 | else | |
747 | { | |
748 | int rc = verify_address(deliver_make_addr(address,TRUE), stdout, flags, -1, | |
4deaf07d | 749 | -1, -1, NULL, NULL, NULL); |
059ec3d9 PH |
750 | if (rc == FAIL) *exit_value = 2; |
751 | else if (rc == DEFER && *exit_value == 0) *exit_value = 1; | |
752 | } | |
753 | } | |
754 | ||
755 | ||
756 | ||
059ec3d9 PH |
757 | /************************************************* |
758 | * Show supported features * | |
759 | *************************************************/ | |
760 | ||
059ec3d9 | 761 | static void |
96508de1 | 762 | show_db_version(FILE * f) |
059ec3d9 PH |
763 | { |
764 | #ifdef DB_VERSION_STRING | |
96508de1 JH |
765 | DEBUG(D_any) |
766 | { | |
767 | fprintf(f, "Library version: BDB: Compile: %s\n", DB_VERSION_STRING); | |
768 | fprintf(f, " Runtime: %s\n", | |
769 | db_version(NULL, NULL, NULL)); | |
770 | } | |
771 | else | |
772 | fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING); | |
773 | ||
059ec3d9 PH |
774 | #elif defined(BTREEVERSION) && defined(HASHVERSION) |
775 | #ifdef USE_DB | |
776 | fprintf(f, "Probably Berkeley DB version 1.8x (native mode)\n"); | |
777 | #else | |
778 | fprintf(f, "Probably Berkeley DB version 1.8x (compatibility mode)\n"); | |
779 | #endif | |
96508de1 | 780 | |
059ec3d9 PH |
781 | #elif defined(_DBM_RDONLY) || defined(dbm_dirfno) |
782 | fprintf(f, "Probably ndbm\n"); | |
783 | #elif defined(USE_TDB) | |
784 | fprintf(f, "Using tdb\n"); | |
785 | #else | |
786 | #ifdef USE_GDBM | |
787 | fprintf(f, "Probably GDBM (native mode)\n"); | |
788 | #else | |
789 | fprintf(f, "Probably GDBM (compatibility mode)\n"); | |
790 | #endif | |
791 | #endif | |
96508de1 JH |
792 | } |
793 | ||
794 | ||
795 | /* This function is called for -bV/--version and for -d to output the optional | |
796 | features of the current Exim binary. | |
797 | ||
798 | Arguments: a FILE for printing | |
799 | Returns: nothing | |
800 | */ | |
801 | ||
802 | static void | |
8768d548 | 803 | show_whats_supported(FILE * fp) |
96508de1 | 804 | { |
8768d548 | 805 | DEBUG(D_any) {} else show_db_version(fp); |
059ec3d9 | 806 | |
8768d548 | 807 | fprintf(fp, "Support for:"); |
9cec981f | 808 | #ifdef SUPPORT_CRYPTEQ |
8768d548 | 809 | fprintf(fp, " crypteq"); |
9cec981f | 810 | #endif |
059ec3d9 | 811 | #if HAVE_ICONV |
8768d548 | 812 | fprintf(fp, " iconv()"); |
059ec3d9 PH |
813 | #endif |
814 | #if HAVE_IPV6 | |
8768d548 | 815 | fprintf(fp, " IPv6"); |
059ec3d9 | 816 | #endif |
79378e0f | 817 | #ifdef HAVE_SETCLASSRESOURCES |
8768d548 | 818 | fprintf(fp, " use_setclassresources"); |
929ba01c | 819 | #endif |
059ec3d9 | 820 | #ifdef SUPPORT_PAM |
8768d548 | 821 | fprintf(fp, " PAM"); |
059ec3d9 PH |
822 | #endif |
823 | #ifdef EXIM_PERL | |
8768d548 | 824 | fprintf(fp, " Perl"); |
059ec3d9 | 825 | #endif |
1a46a8c5 | 826 | #ifdef EXPAND_DLFUNC |
8768d548 | 827 | fprintf(fp, " Expand_dlfunc"); |
1a46a8c5 | 828 | #endif |
059ec3d9 | 829 | #ifdef USE_TCP_WRAPPERS |
8768d548 | 830 | fprintf(fp, " TCPwrappers"); |
059ec3d9 PH |
831 | #endif |
832 | #ifdef SUPPORT_TLS | |
c11d665d | 833 | # ifdef USE_GNUTLS |
8768d548 | 834 | fprintf(fp, " GnuTLS"); |
c11d665d | 835 | # else |
8768d548 | 836 | fprintf(fp, " OpenSSL"); |
c11d665d | 837 | # endif |
059ec3d9 | 838 | #endif |
b2f5a032 | 839 | #ifdef SUPPORT_TRANSLATE_IP_ADDRESS |
8768d548 | 840 | fprintf(fp, " translate_ip_address"); |
b2f5a032 | 841 | #endif |
f174f16e | 842 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
8768d548 | 843 | fprintf(fp, " move_frozen_messages"); |
f174f16e | 844 | #endif |
8523533c | 845 | #ifdef WITH_CONTENT_SCAN |
8768d548 | 846 | fprintf(fp, " Content_Scanning"); |
8523533c | 847 | #endif |
c0635b6d | 848 | #ifdef SUPPORT_DANE |
8768d548 | 849 | fprintf(fp, " DANE"); |
c0635b6d | 850 | #endif |
74f150bf | 851 | #ifndef DISABLE_DKIM |
8768d548 | 852 | fprintf(fp, " DKIM"); |
74f150bf | 853 | #endif |
ef1bbb27 | 854 | #ifndef DISABLE_DNSSEC |
8768d548 | 855 | fprintf(fp, " DNSSEC"); |
ef1bbb27 | 856 | #endif |
0cbf2b82 | 857 | #ifndef DISABLE_EVENT |
8768d548 | 858 | fprintf(fp, " Event"); |
0cbf2b82 | 859 | #endif |
8c5d388a | 860 | #ifdef SUPPORT_I18N |
8768d548 | 861 | fprintf(fp, " I18N"); |
8c5d388a | 862 | #endif |
74f150bf | 863 | #ifndef DISABLE_OCSP |
8768d548 | 864 | fprintf(fp, " OCSP"); |
74f150bf | 865 | #endif |
4d832da1 | 866 | #ifndef DISABLE_PRDR |
8768d548 | 867 | fprintf(fp, " PRDR"); |
4d832da1 | 868 | #endif |
cee5f132 | 869 | #ifdef SUPPORT_PROXY |
8768d548 | 870 | fprintf(fp, " PROXY"); |
cee5f132 | 871 | #endif |
f0989ec0 | 872 | #ifdef SUPPORT_SOCKS |
8768d548 | 873 | fprintf(fp, " SOCKS"); |
f2de3a33 | 874 | #endif |
7952eef9 | 875 | #ifdef SUPPORT_SPF |
8768d548 | 876 | fprintf(fp, " SPF"); |
7952eef9 | 877 | #endif |
1a2dfad5 | 878 | #ifdef TCP_FASTOPEN |
10ac8d7f | 879 | deliver_init(); |
8768d548 | 880 | if (f.tcp_fastopen_ok) fprintf(fp, " TCP_Fast_Open"); |
1a2dfad5 | 881 | #endif |
5bde3efa | 882 | #ifdef EXPERIMENTAL_LMDB |
8768d548 | 883 | fprintf(fp, " Experimental_LMDB"); |
5bde3efa | 884 | #endif |
3369a853 | 885 | #ifdef EXPERIMENTAL_QUEUEFILE |
8768d548 | 886 | fprintf(fp, " Experimental_QUEUEFILE"); |
3369a853 | 887 | #endif |
8523533c | 888 | #ifdef EXPERIMENTAL_SRS |
8768d548 | 889 | fprintf(fp, " Experimental_SRS"); |
8523533c | 890 | #endif |
617d3932 | 891 | #ifdef EXPERIMENTAL_ARC |
8768d548 | 892 | fprintf(fp, " Experimental_ARC"); |
617d3932 | 893 | #endif |
8523533c | 894 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
8768d548 | 895 | fprintf(fp, " Experimental_Brightmail"); |
8523533c | 896 | #endif |
6a8f9482 | 897 | #ifdef EXPERIMENTAL_DCC |
8768d548 | 898 | fprintf(fp, " Experimental_DCC"); |
6a8f9482 | 899 | #endif |
4840604e | 900 | #ifdef EXPERIMENTAL_DMARC |
8768d548 | 901 | fprintf(fp, " Experimental_DMARC"); |
4840604e | 902 | #endif |
895fbaf2 | 903 | #ifdef EXPERIMENTAL_DSN_INFO |
8768d548 | 904 | fprintf(fp, " Experimental_DSN_info"); |
895fbaf2 | 905 | #endif |
ee8b8090 JH |
906 | #ifdef EXPERIMENTAL_PIPE_CONNECT |
907 | fprintf(fp, " Experimental_PIPE_CONNECT"); | |
908 | #endif | |
8768d548 | 909 | fprintf(fp, "\n"); |
059ec3d9 | 910 | |
8768d548 | 911 | fprintf(fp, "Lookups (built-in):"); |
e6d225ae | 912 | #if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2 |
8768d548 | 913 | fprintf(fp, " lsearch wildlsearch nwildlsearch iplsearch"); |
059ec3d9 | 914 | #endif |
e6d225ae | 915 | #if defined(LOOKUP_CDB) && LOOKUP_CDB!=2 |
8768d548 | 916 | fprintf(fp, " cdb"); |
059ec3d9 | 917 | #endif |
e6d225ae | 918 | #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2 |
8768d548 | 919 | fprintf(fp, " dbm dbmjz dbmnz"); |
059ec3d9 | 920 | #endif |
e6d225ae | 921 | #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2 |
8768d548 | 922 | fprintf(fp, " dnsdb"); |
059ec3d9 | 923 | #endif |
e6d225ae | 924 | #if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2 |
8768d548 | 925 | fprintf(fp, " dsearch"); |
059ec3d9 | 926 | #endif |
e6d225ae | 927 | #if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2 |
8768d548 | 928 | fprintf(fp, " ibase"); |
059ec3d9 | 929 | #endif |
ffc92d69 JH |
930 | #if defined(LOOKUP_JSON) && LOOKUP_JSON!=2 |
931 | fprintf(fp, " json"); | |
932 | #endif | |
e6d225ae | 933 | #if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2 |
8768d548 | 934 | fprintf(fp, " ldap ldapdn ldapm"); |
059ec3d9 | 935 | #endif |
5bde3efa | 936 | #ifdef EXPERIMENTAL_LMDB |
8768d548 | 937 | fprintf(fp, " lmdb"); |
5bde3efa | 938 | #endif |
e6d225ae | 939 | #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2 |
8768d548 | 940 | fprintf(fp, " mysql"); |
059ec3d9 | 941 | #endif |
e6d225ae | 942 | #if defined(LOOKUP_NIS) && LOOKUP_NIS!=2 |
8768d548 | 943 | fprintf(fp, " nis nis0"); |
059ec3d9 | 944 | #endif |
e6d225ae | 945 | #if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2 |
8768d548 | 946 | fprintf(fp, " nisplus"); |
059ec3d9 | 947 | #endif |
e6d225ae | 948 | #if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2 |
8768d548 | 949 | fprintf(fp, " oracle"); |
059ec3d9 | 950 | #endif |
e6d225ae | 951 | #if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2 |
8768d548 | 952 | fprintf(fp, " passwd"); |
059ec3d9 | 953 | #endif |
e6d225ae | 954 | #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2 |
8768d548 | 955 | fprintf(fp, " pgsql"); |
059ec3d9 | 956 | #endif |
de78e2d5 | 957 | #if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2 |
8768d548 | 958 | fprintf(fp, " redis"); |
de78e2d5 | 959 | #endif |
e6d225ae | 960 | #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2 |
8768d548 | 961 | fprintf(fp, " sqlite"); |
13b685f9 | 962 | #endif |
e6d225ae | 963 | #if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2 |
8768d548 | 964 | fprintf(fp, " testdb"); |
059ec3d9 | 965 | #endif |
e6d225ae | 966 | #if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2 |
8768d548 | 967 | fprintf(fp, " whoson"); |
059ec3d9 | 968 | #endif |
8768d548 | 969 | fprintf(fp, "\n"); |
059ec3d9 | 970 | |
8768d548 JH |
971 | auth_show_supported(fp); |
972 | route_show_supported(fp); | |
973 | transport_show_supported(fp); | |
059ec3d9 | 974 | |
c11d665d | 975 | #ifdef WITH_CONTENT_SCAN |
8768d548 | 976 | malware_show_supported(fp); |
c11d665d JH |
977 | #endif |
978 | ||
059ec3d9 PH |
979 | if (fixed_never_users[0] > 0) |
980 | { | |
981 | int i; | |
8768d548 | 982 | fprintf(fp, "Fixed never_users: "); |
059ec3d9 | 983 | for (i = 1; i <= (int)fixed_never_users[0] - 1; i++) |
8768d548 JH |
984 | fprintf(fp, "%d:", (unsigned int)fixed_never_users[i]); |
985 | fprintf(fp, "%d\n", (unsigned int)fixed_never_users[i]); | |
059ec3d9 | 986 | } |
21c28500 | 987 | |
8768d548 | 988 | fprintf(fp, "Configure owner: %d:%d\n", config_uid, config_gid); |
19bfe9e7 | 989 | |
8768d548 | 990 | fprintf(fp, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t)); |
36f12725 | 991 | |
6545de78 PP |
992 | /* Everything else is details which are only worth reporting when debugging. |
993 | Perhaps the tls_version_report should move into this too. */ | |
994 | DEBUG(D_any) do { | |
995 | ||
b3c261f7 PP |
996 | /* clang defines __GNUC__ (at least, for me) so test for it first */ |
997 | #if defined(__clang__) | |
8768d548 | 998 | fprintf(fp, "Compiler: CLang [%s]\n", __clang_version__); |
b3c261f7 | 999 | #elif defined(__GNUC__) |
8768d548 | 1000 | fprintf(fp, "Compiler: GCC [%s]\n", |
b3c261f7 PP |
1001 | # ifdef __VERSION__ |
1002 | __VERSION__ | |
1003 | # else | |
1004 | "? unknown version ?" | |
1005 | # endif | |
1006 | ); | |
1007 | #else | |
8768d548 | 1008 | fprintf(fp, "Compiler: <unknown>\n"); |
b3c261f7 PP |
1009 | #endif |
1010 | ||
98913c8e | 1011 | #if defined(__GLIBC__) && !defined(__UCLIBC__) |
8768d548 | 1012 | fprintf(fp, "Library version: Glibc: Compile: %d.%d\n", |
01f3091a JH |
1013 | __GLIBC__, __GLIBC_MINOR__); |
1014 | if (__GLIBC_PREREQ(2, 1)) | |
8768d548 | 1015 | fprintf(fp, " Runtime: %s\n", |
01f3091a JH |
1016 | gnu_get_libc_version()); |
1017 | #endif | |
1018 | ||
8768d548 | 1019 | show_db_version(fp); |
96508de1 | 1020 | |
754a0503 | 1021 | #ifdef SUPPORT_TLS |
8768d548 | 1022 | tls_version_report(fp); |
754a0503 | 1023 | #endif |
8c5d388a | 1024 | #ifdef SUPPORT_I18N |
8768d548 | 1025 | utf8_version_report(fp); |
b04be5e7 | 1026 | #endif |
754a0503 | 1027 | |
d7978c0f | 1028 | for (auth_info * authi = auths_available; *authi->driver_name != '\0'; ++authi) |
fc362fc5 | 1029 | if (authi->version_report) |
8768d548 | 1030 | (*authi->version_report)(fp); |
6545de78 | 1031 | |
decd95cb | 1032 | /* PCRE_PRERELEASE is either defined and empty or a bare sequence of |
6475bd82 PP |
1033 | characters; unless it's an ancient version of PCRE in which case it |
1034 | is not defined. */ | |
1035 | #ifndef PCRE_PRERELEASE | |
01f3091a | 1036 | # define PCRE_PRERELEASE |
6475bd82 PP |
1037 | #endif |
1038 | #define QUOTE(X) #X | |
1039 | #define EXPAND_AND_QUOTE(X) QUOTE(X) | |
8768d548 | 1040 | fprintf(fp, "Library version: PCRE: Compile: %d.%d%s\n" |
6545de78 PP |
1041 | " Runtime: %s\n", |
1042 | PCRE_MAJOR, PCRE_MINOR, | |
6475bd82 | 1043 | EXPAND_AND_QUOTE(PCRE_PRERELEASE) "", |
6545de78 | 1044 | pcre_version()); |
6475bd82 PP |
1045 | #undef QUOTE |
1046 | #undef EXPAND_AND_QUOTE | |
6545de78 PP |
1047 | |
1048 | init_lookup_list(); | |
d7978c0f | 1049 | for (int i = 0; i < lookup_list_count; i++) |
6545de78 | 1050 | if (lookup_list[i]->version_report) |
8768d548 | 1051 | lookup_list[i]->version_report(fp); |
6545de78 | 1052 | |
b70d2586 | 1053 | #ifdef WHITELIST_D_MACROS |
8768d548 | 1054 | fprintf(fp, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS); |
b70d2586 | 1055 | #else |
8768d548 | 1056 | fprintf(fp, "WHITELIST_D_MACROS unset\n"); |
b70d2586 PP |
1057 | #endif |
1058 | #ifdef TRUSTED_CONFIG_LIST | |
8768d548 | 1059 | fprintf(fp, "TRUSTED_CONFIG_LIST: \"%s\"\n", TRUSTED_CONFIG_LIST); |
b70d2586 | 1060 | #else |
8768d548 | 1061 | fprintf(fp, "TRUSTED_CONFIG_LIST unset\n"); |
b70d2586 PP |
1062 | #endif |
1063 | ||
6545de78 | 1064 | } while (0); |
059ec3d9 PH |
1065 | } |
1066 | ||
1067 | ||
98a90c36 PP |
1068 | /************************************************* |
1069 | * Show auxiliary information about Exim * | |
1070 | *************************************************/ | |
1071 | ||
1072 | static void | |
1073 | show_exim_information(enum commandline_info request, FILE *stream) | |
1074 | { | |
98a90c36 PP |
1075 | switch(request) |
1076 | { | |
1077 | case CMDINFO_NONE: | |
1078 | fprintf(stream, "Oops, something went wrong.\n"); | |
1079 | return; | |
1080 | case CMDINFO_HELP: | |
1081 | fprintf(stream, | |
1082 | "The -bI: flag takes a string indicating which information to provide.\n" | |
1083 | "If the string is not recognised, you'll get this help (on stderr).\n" | |
1084 | "\n" | |
1085 | " exim -bI:help this information\n" | |
030caf2a JS |
1086 | " exim -bI:dscp list of known dscp value keywords\n" |
1087 | " exim -bI:sieve list of supported sieve extensions\n" | |
98a90c36 PP |
1088 | ); |
1089 | return; | |
1090 | case CMDINFO_SIEVE: | |
d7978c0f | 1091 | for (const uschar ** pp = exim_sieve_extension_list; *pp; ++pp) |
98a90c36 PP |
1092 | fprintf(stream, "%s\n", *pp); |
1093 | return; | |
36a3ae5f PP |
1094 | case CMDINFO_DSCP: |
1095 | dscp_list_to_stream(stream); | |
1096 | return; | |
98a90c36 PP |
1097 | } |
1098 | } | |
059ec3d9 PH |
1099 | |
1100 | ||
1101 | /************************************************* | |
1102 | * Quote a local part * | |
1103 | *************************************************/ | |
1104 | ||
1105 | /* This function is used when a sender address or a From: or Sender: header | |
1106 | line is being created from the caller's login, or from an authenticated_id. It | |
1107 | applies appropriate quoting rules for a local part. | |
1108 | ||
1109 | Argument: the local part | |
1110 | Returns: the local part, quoted if necessary | |
1111 | */ | |
1112 | ||
1113 | uschar * | |
1114 | local_part_quote(uschar *lpart) | |
1115 | { | |
1116 | BOOL needs_quote = FALSE; | |
acec9514 | 1117 | gstring * g; |
059ec3d9 | 1118 | |
d7978c0f | 1119 | for (uschar * t = lpart; !needs_quote && *t != 0; t++) |
059ec3d9 PH |
1120 | { |
1121 | needs_quote = !isalnum(*t) && strchr("!#$%&'*+-/=?^_`{|}~", *t) == NULL && | |
1122 | (*t != '.' || t == lpart || t[1] == 0); | |
1123 | } | |
1124 | ||
1125 | if (!needs_quote) return lpart; | |
1126 | ||
acec9514 | 1127 | g = string_catn(NULL, US"\"", 1); |
059ec3d9 PH |
1128 | |
1129 | for (;;) | |
1130 | { | |
1131 | uschar *nq = US Ustrpbrk(lpart, "\\\""); | |
1132 | if (nq == NULL) | |
1133 | { | |
acec9514 | 1134 | g = string_cat(g, lpart); |
059ec3d9 PH |
1135 | break; |
1136 | } | |
acec9514 JH |
1137 | g = string_catn(g, lpart, nq - lpart); |
1138 | g = string_catn(g, US"\\", 1); | |
1139 | g = string_catn(g, nq, 1); | |
059ec3d9 PH |
1140 | lpart = nq + 1; |
1141 | } | |
1142 | ||
acec9514 JH |
1143 | g = string_catn(g, US"\"", 1); |
1144 | return string_from_gstring(g); | |
059ec3d9 PH |
1145 | } |
1146 | ||
1147 | ||
1148 | ||
1149 | #ifdef USE_READLINE | |
1150 | /************************************************* | |
1151 | * Load readline() functions * | |
1152 | *************************************************/ | |
1153 | ||
1154 | /* This function is called from testing executions that read data from stdin, | |
1155 | but only when running as the calling user. Currently, only -be does this. The | |
1156 | function loads the readline() function library and passes back the functions. | |
1157 | On some systems, it needs the curses library, so load that too, but try without | |
1158 | it if loading fails. All this functionality has to be requested at build time. | |
1159 | ||
1160 | Arguments: | |
1161 | fn_readline_ptr pointer to where to put the readline pointer | |
1162 | fn_addhist_ptr pointer to where to put the addhistory function | |
1163 | ||
1164 | Returns: the dlopen handle or NULL on failure | |
1165 | */ | |
1166 | ||
1167 | static void * | |
1ba28e2b PP |
1168 | set_readline(char * (**fn_readline_ptr)(const char *), |
1169 | void (**fn_addhist_ptr)(const char *)) | |
059ec3d9 PH |
1170 | { |
1171 | void *dlhandle; | |
e12f8c32 | 1172 | void *dlhandle_curses = dlopen("libcurses." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_LAZY); |
059ec3d9 | 1173 | |
e12f8c32 | 1174 | dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW); |
059ec3d9 PH |
1175 | if (dlhandle_curses != NULL) dlclose(dlhandle_curses); |
1176 | ||
1177 | if (dlhandle != NULL) | |
1178 | { | |
1ba28e2b PP |
1179 | /* Checked manual pages; at least in GNU Readline 6.1, the prototypes are: |
1180 | * char * readline (const char *prompt); | |
1181 | * void add_history (const char *string); | |
1182 | */ | |
1183 | *fn_readline_ptr = (char *(*)(const char*))dlsym(dlhandle, "readline"); | |
1184 | *fn_addhist_ptr = (void(*)(const char*))dlsym(dlhandle, "add_history"); | |
059ec3d9 PH |
1185 | } |
1186 | else | |
1187 | { | |
1188 | DEBUG(D_any) debug_printf("failed to load readline: %s\n", dlerror()); | |
1189 | } | |
1190 | ||
1191 | return dlhandle; | |
1192 | } | |
1193 | #endif | |
1194 | ||
1195 | ||
1196 | ||
1197 | /************************************************* | |
1198 | * Get a line from stdin for testing things * | |
1199 | *************************************************/ | |
1200 | ||
1201 | /* This function is called when running tests that can take a number of lines | |
1202 | of input (for example, -be and -bt). It handles continuations and trailing | |
1203 | spaces. And prompting and a blank line output on eof. If readline() is in use, | |
1204 | the arguments are non-NULL and provide the relevant functions. | |
1205 | ||
1206 | Arguments: | |
1207 | fn_readline readline function or NULL | |
1208 | fn_addhist addhist function or NULL | |
1209 | ||
1210 | Returns: pointer to dynamic memory, or NULL at end of file | |
1211 | */ | |
1212 | ||
1213 | static uschar * | |
1ba28e2b | 1214 | get_stdinput(char *(*fn_readline)(const char *), void(*fn_addhist)(const char *)) |
059ec3d9 | 1215 | { |
acec9514 | 1216 | gstring * g = NULL; |
059ec3d9 | 1217 | |
acec9514 | 1218 | if (!fn_readline) { printf("> "); fflush(stdout); } |
059ec3d9 | 1219 | |
d7978c0f | 1220 | for (int i = 0;; i++) |
059ec3d9 PH |
1221 | { |
1222 | uschar buffer[1024]; | |
1223 | uschar *p, *ss; | |
1224 | ||
1225 | #ifdef USE_READLINE | |
1226 | char *readline_line = NULL; | |
1227 | if (fn_readline != NULL) | |
1228 | { | |
1229 | if ((readline_line = fn_readline((i > 0)? "":"> ")) == NULL) break; | |
1230 | if (*readline_line != 0 && fn_addhist != NULL) fn_addhist(readline_line); | |
1231 | p = US readline_line; | |
1232 | } | |
1233 | else | |
1234 | #endif | |
1235 | ||
1236 | /* readline() not in use */ | |
1237 | ||
1238 | { | |
1239 | if (Ufgets(buffer, sizeof(buffer), stdin) == NULL) break; | |
1240 | p = buffer; | |
1241 | } | |
1242 | ||
1243 | /* Handle the line */ | |
1244 | ||
1245 | ss = p + (int)Ustrlen(p); | |
1246 | while (ss > p && isspace(ss[-1])) ss--; | |
1247 | ||
1248 | if (i > 0) | |
1249 | { | |
1250 | while (p < ss && isspace(*p)) p++; /* leading space after cont */ | |
1251 | } | |
1252 | ||
acec9514 | 1253 | g = string_catn(g, p, ss - p); |
059ec3d9 PH |
1254 | |
1255 | #ifdef USE_READLINE | |
acec9514 | 1256 | if (fn_readline) free(readline_line); |
059ec3d9 PH |
1257 | #endif |
1258 | ||
acec9514 JH |
1259 | /* g can only be NULL if ss==p */ |
1260 | if (ss == p || g->s[g->ptr-1] != '\\') | |
059ec3d9 | 1261 | break; |
acec9514 JH |
1262 | |
1263 | --g->ptr; | |
1264 | (void) string_from_gstring(g); | |
059ec3d9 PH |
1265 | } |
1266 | ||
acec9514 JH |
1267 | if (!g) printf("\n"); |
1268 | return string_from_gstring(g); | |
059ec3d9 PH |
1269 | } |
1270 | ||
1271 | ||
1272 | ||
81ea09ca NM |
1273 | /************************************************* |
1274 | * Output usage information for the program * | |
1275 | *************************************************/ | |
1276 | ||
1277 | /* This function is called when there are no recipients | |
1278 | or a specific --help argument was added. | |
1279 | ||
1280 | Arguments: | |
1281 | progname information on what name we were called by | |
1282 | ||
1283 | Returns: DOES NOT RETURN | |
1284 | */ | |
1285 | ||
1286 | static void | |
1287 | exim_usage(uschar *progname) | |
1288 | { | |
1289 | ||
4c04137d | 1290 | /* Handle specific program invocation variants */ |
81ea09ca | 1291 | if (Ustrcmp(progname, US"-mailq") == 0) |
9af3c549 | 1292 | exim_fail( |
e765a0f1 | 1293 | "mailq - list the contents of the mail queue\n\n" |
81ea09ca | 1294 | "For a list of options, see the Exim documentation.\n"); |
81ea09ca NM |
1295 | |
1296 | /* Generic usage - we output this whatever happens */ | |
9af3c549 | 1297 | exim_fail( |
81ea09ca NM |
1298 | "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n" |
1299 | "not directly from a shell command line. Options and/or arguments control\n" | |
1300 | "what it does when called. For a list of options, see the Exim documentation.\n"); | |
81ea09ca NM |
1301 | } |
1302 | ||
1303 | ||
1304 | ||
a7cbbf50 PP |
1305 | /************************************************* |
1306 | * Validate that the macros given are okay * | |
1307 | *************************************************/ | |
1308 | ||
1309 | /* Typically, Exim will drop privileges if macros are supplied. In some | |
1310 | cases, we want to not do so. | |
1311 | ||
a4034eb8 | 1312 | Arguments: opt_D_used - true if the commandline had a "-D" option |
a7cbbf50 PP |
1313 | Returns: true if trusted, false otherwise |
1314 | */ | |
1315 | ||
1316 | static BOOL | |
a4034eb8 | 1317 | macros_trusted(BOOL opt_D_used) |
a7cbbf50 PP |
1318 | { |
1319 | #ifdef WHITELIST_D_MACROS | |
d7978c0f | 1320 | uschar *whitelisted, *end, *p, **whites; |
a7cbbf50 PP |
1321 | int white_count, i, n; |
1322 | size_t len; | |
1323 | BOOL prev_char_item, found; | |
1324 | #endif | |
1325 | ||
a4034eb8 | 1326 | if (!opt_D_used) |
a7cbbf50 PP |
1327 | return TRUE; |
1328 | #ifndef WHITELIST_D_MACROS | |
1329 | return FALSE; | |
1330 | #else | |
1331 | ||
66581d1e PP |
1332 | /* We only trust -D overrides for some invoking users: |
1333 | root, the exim run-time user, the optional config owner user. | |
1334 | I don't know why config-owner would be needed, but since they can own the | |
1335 | config files anyway, there's no security risk to letting them override -D. */ | |
1336 | if ( ! ((real_uid == root_uid) | |
1337 | || (real_uid == exim_uid) | |
1338 | #ifdef CONFIGURE_OWNER | |
1339 | || (real_uid == config_uid) | |
1340 | #endif | |
1341 | )) | |
1342 | { | |
1343 | debug_printf("macros_trusted rejecting macros for uid %d\n", (int) real_uid); | |
1344 | return FALSE; | |
1345 | } | |
1346 | ||
a7cbbf50 PP |
1347 | /* Get a list of macros which are whitelisted */ |
1348 | whitelisted = string_copy_malloc(US WHITELIST_D_MACROS); | |
1349 | prev_char_item = FALSE; | |
1350 | white_count = 0; | |
1351 | for (p = whitelisted; *p != '\0'; ++p) | |
1352 | { | |
1353 | if (*p == ':' || isspace(*p)) | |
1354 | { | |
1355 | *p = '\0'; | |
1356 | if (prev_char_item) | |
1357 | ++white_count; | |
1358 | prev_char_item = FALSE; | |
1359 | continue; | |
1360 | } | |
1361 | if (!prev_char_item) | |
1362 | prev_char_item = TRUE; | |
1363 | } | |
1364 | end = p; | |
1365 | if (prev_char_item) | |
1366 | ++white_count; | |
1367 | if (!white_count) | |
1368 | return FALSE; | |
1369 | whites = store_malloc(sizeof(uschar *) * (white_count+1)); | |
1370 | for (p = whitelisted, i = 0; (p != end) && (i < white_count); ++p) | |
1371 | { | |
1372 | if (*p != '\0') | |
1373 | { | |
1374 | whites[i++] = p; | |
1375 | if (i == white_count) | |
1376 | break; | |
1377 | while (*p != '\0' && p < end) | |
1378 | ++p; | |
1379 | } | |
1380 | } | |
1381 | whites[i] = NULL; | |
1382 | ||
1a7c9a48 JH |
1383 | /* The list of commandline macros should be very short. |
1384 | Accept the N*M complexity. */ | |
d7978c0f | 1385 | for (macro_item * m = macros_user; m; m = m->next) if (m->command_line) |
1a7c9a48 JH |
1386 | { |
1387 | found = FALSE; | |
d7978c0f | 1388 | for (uschar ** w = whites; *w; ++w) |
1a7c9a48 JH |
1389 | if (Ustrcmp(*w, m->name) == 0) |
1390 | { | |
1391 | found = TRUE; | |
1392 | break; | |
1393 | } | |
1394 | if (!found) | |
1395 | return FALSE; | |
1396 | if (!m->replacement) | |
1397 | continue; | |
1398 | if ((len = m->replen) == 0) | |
1399 | continue; | |
1400 | n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len, | |
1401 | 0, PCRE_EOPT, NULL, 0); | |
1402 | if (n < 0) | |
1403 | { | |
1404 | if (n != PCRE_ERROR_NOMATCH) | |
1405 | debug_printf("macros_trusted checking %s returned %d\n", m->name, n); | |
1406 | return FALSE; | |
1407 | } | |
1408 | } | |
43236f35 | 1409 | DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n"); |
a7cbbf50 PP |
1410 | return TRUE; |
1411 | #endif | |
1412 | } | |
1413 | ||
1414 | ||
9650d98a JH |
1415 | /************************************************* |
1416 | * Expansion testing * | |
1417 | *************************************************/ | |
1418 | ||
1419 | /* Expand and print one item, doing macro-processing. | |
1420 | ||
1421 | Arguments: | |
1422 | item line for expansion | |
1423 | */ | |
1424 | ||
1425 | static void | |
1426 | expansion_test_line(uschar * line) | |
1427 | { | |
1428 | int len; | |
1429 | BOOL dummy_macexp; | |
1430 | ||
1431 | Ustrncpy(big_buffer, line, big_buffer_size); | |
1432 | big_buffer[big_buffer_size-1] = '\0'; | |
1433 | len = Ustrlen(big_buffer); | |
1434 | ||
1435 | (void) macros_expand(0, &len, &dummy_macexp); | |
1436 | ||
1437 | if (isupper(big_buffer[0])) | |
1438 | { | |
1439 | if (macro_read_assignment(big_buffer)) | |
1a7c9a48 | 1440 | printf("Defined macro '%s'\n", mlast->name); |
9650d98a JH |
1441 | } |
1442 | else | |
1443 | if ((line = expand_string(big_buffer))) printf("%s\n", CS line); | |
1444 | else printf("Failed: %s\n", expand_string_message); | |
1445 | } | |
1446 | ||
1447 | ||
9af3c549 | 1448 | |
059ec3d9 PH |
1449 | /************************************************* |
1450 | * Entry point and high-level code * | |
1451 | *************************************************/ | |
1452 | ||
1453 | /* Entry point for the Exim mailer. Analyse the arguments and arrange to take | |
1454 | the appropriate action. All the necessary functions are present in the one | |
1455 | binary. I originally thought one should split it up, but it turns out that so | |
1456 | much of the apparatus is needed in each chunk that one might as well just have | |
1457 | it all available all the time, which then makes the coding easier as well. | |
1458 | ||
1459 | Arguments: | |
1460 | argc count of entries in argv | |
1461 | argv argument strings, with argv[0] being the program name | |
1462 | ||
1463 | Returns: EXIT_SUCCESS if terminated successfully | |
1464 | EXIT_FAILURE otherwise, except when a message has been sent | |
1465 | to the sender, and -oee was given | |
1466 | */ | |
1467 | ||
1468 | int | |
1469 | main(int argc, char **cargv) | |
1470 | { | |
1471 | uschar **argv = USS cargv; | |
1472 | int arg_receive_timeout = -1; | |
1473 | int arg_smtp_receive_timeout = -1; | |
1474 | int arg_error_handling = error_handling; | |
f05da2e8 PH |
1475 | int filter_sfd = -1; |
1476 | int filter_ufd = -1; | |
059ec3d9 | 1477 | int group_count; |
1670ef10 | 1478 | int i, rv; |
059ec3d9 PH |
1479 | int list_queue_option = 0; |
1480 | int msg_action = 0; | |
1481 | int msg_action_arg = -1; | |
1482 | int namelen = (argv[0] == NULL)? 0 : Ustrlen(argv[0]); | |
1483 | int queue_only_reason = 0; | |
1484 | #ifdef EXIM_PERL | |
1485 | int perl_start_option = 0; | |
1486 | #endif | |
1487 | int recipients_arg = argc; | |
1488 | int sender_address_domain = 0; | |
1489 | int test_retry_arg = -1; | |
1490 | int test_rewrite_arg = -1; | |
3b7ac02c | 1491 | gid_t original_egid; |
059ec3d9 PH |
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; | |
4ab69ec7 | 1509 | BOOL opt_D_used = FALSE; |
059ec3d9 PH |
1510 | BOOL queue_only_set = FALSE; |
1511 | BOOL receiving_message = TRUE; | |
33d73e3b | 1512 | BOOL sender_ident_set = FALSE; |
8669f003 | 1513 | BOOL session_local_queue_only; |
059ec3d9 PH |
1514 | BOOL unprivileged; |
1515 | BOOL removed_privilege = FALSE; | |
81ea09ca | 1516 | BOOL usage_wanted = FALSE; |
059ec3d9 PH |
1517 | BOOL verify_address_mode = FALSE; |
1518 | BOOL verify_as_sender = FALSE; | |
1519 | BOOL version_printed = FALSE; | |
1520 | uschar *alias_arg = NULL; | |
1521 | uschar *called_as = US""; | |
a3fb9793 | 1522 | uschar *cmdline_syslog_name = NULL; |
059ec3d9 PH |
1523 | uschar *start_queue_run_id = NULL; |
1524 | uschar *stop_queue_run_id = NULL; | |
328895cc | 1525 | uschar *expansion_test_message = NULL; |
059ec3d9 PH |
1526 | uschar *ftest_domain = NULL; |
1527 | uschar *ftest_localpart = NULL; | |
1528 | uschar *ftest_prefix = NULL; | |
1529 | uschar *ftest_suffix = NULL; | |
0ad2e0fc | 1530 | uschar *log_oneline = NULL; |
8544e77a | 1531 | uschar *malware_test_file = NULL; |
059ec3d9 PH |
1532 | uschar *real_sender_address; |
1533 | uschar *originator_home = US"/"; | |
a3fb9793 | 1534 | size_t sz; |
059ec3d9 PH |
1535 | void *reset_point; |
1536 | ||
1537 | struct passwd *pw; | |
1538 | struct stat statbuf; | |
1539 | pid_t passed_qr_pid = (pid_t)0; | |
1540 | int passed_qr_pipe = -1; | |
157d73b5 | 1541 | gid_t group_list[EXIM_GROUPLIST_SIZE]; |
059ec3d9 | 1542 | |
98a90c36 PP |
1543 | /* For the -bI: flag */ |
1544 | enum commandline_info info_flag = CMDINFO_NONE; | |
1545 | BOOL info_stdout = FALSE; | |
1546 | ||
059ec3d9 PH |
1547 | /* Possible options for -R and -S */ |
1548 | ||
1549 | static uschar *rsopts[] = { US"f", US"ff", US"r", US"rf", US"rff" }; | |
1550 | ||
1551 | /* Need to define this in case we need to change the environment in order | |
1552 | to get rid of a bogus time zone. We have to make it char rather than uschar | |
1553 | because some OS define it in /usr/include/unistd.h. */ | |
1554 | ||
1555 | extern char **environ; | |
1556 | ||
35edf2ff | 1557 | /* If the Exim user and/or group and/or the configuration file owner/group were |
059ec3d9 PH |
1558 | defined by ref:name at build time, we must now find the actual uid/gid values. |
1559 | This is a feature to make the lives of binary distributors easier. */ | |
1560 | ||
1561 | #ifdef EXIM_USERNAME | |
1562 | if (route_finduser(US EXIM_USERNAME, &pw, &exim_uid)) | |
1563 | { | |
10385c15 | 1564 | if (exim_uid == 0) |
9af3c549 JH |
1565 | exim_fail("exim: refusing to run with uid 0 for \"%s\"\n", EXIM_USERNAME); |
1566 | ||
084c1d8c PP |
1567 | /* If ref:name uses a number as the name, route_finduser() returns |
1568 | TRUE with exim_uid set and pw coerced to NULL. */ | |
1569 | if (pw) | |
1570 | exim_gid = pw->pw_gid; | |
1571 | #ifndef EXIM_GROUPNAME | |
1572 | else | |
9af3c549 | 1573 | exim_fail( |
084c1d8c PP |
1574 | "exim: ref:name should specify a usercode, not a group.\n" |
1575 | "exim: can't let you get away with it unless you also specify a group.\n"); | |
084c1d8c | 1576 | #endif |
059ec3d9 PH |
1577 | } |
1578 | else | |
9af3c549 | 1579 | exim_fail("exim: failed to find uid for user name \"%s\"\n", EXIM_USERNAME); |
059ec3d9 PH |
1580 | #endif |
1581 | ||
1582 | #ifdef EXIM_GROUPNAME | |
1583 | if (!route_findgroup(US EXIM_GROUPNAME, &exim_gid)) | |
9af3c549 | 1584 | exim_fail("exim: failed to find gid for group name \"%s\"\n", EXIM_GROUPNAME); |
059ec3d9 PH |
1585 | #endif |
1586 | ||
1587 | #ifdef CONFIGURE_OWNERNAME | |
1588 | if (!route_finduser(US CONFIGURE_OWNERNAME, NULL, &config_uid)) | |
9af3c549 | 1589 | exim_fail("exim: failed to find uid for user name \"%s\"\n", |
059ec3d9 | 1590 | CONFIGURE_OWNERNAME); |
059ec3d9 PH |
1591 | #endif |
1592 | ||
79d4bc3d PP |
1593 | /* We default the system_filter_user to be the Exim run-time user, as a |
1594 | sane non-root value. */ | |
1595 | system_filter_uid = exim_uid; | |
1596 | ||
35edf2ff PH |
1597 | #ifdef CONFIGURE_GROUPNAME |
1598 | if (!route_findgroup(US CONFIGURE_GROUPNAME, &config_gid)) | |
9af3c549 | 1599 | exim_fail("exim: failed to find gid for group name \"%s\"\n", |
35edf2ff | 1600 | CONFIGURE_GROUPNAME); |
35edf2ff PH |
1601 | #endif |
1602 | ||
92e6a3d9 JH |
1603 | /* In the Cygwin environment, some initialization used to need doing. |
1604 | It was fudged in by means of this macro; now no longer but we'll leave | |
1605 | it in case of others. */ | |
059ec3d9 PH |
1606 | |
1607 | #ifdef OS_INIT | |
1608 | OS_INIT | |
1609 | #endif | |
1610 | ||
1611 | /* Check a field which is patched when we are running Exim within its | |
1612 | testing harness; do a fast initial check, and then the whole thing. */ | |
1613 | ||
8768d548 | 1614 | f.running_in_test_harness = |
059ec3d9 | 1615 | *running_status == '<' && Ustrcmp(running_status, "<<<testing>>>") == 0; |
8768d548 | 1616 | if (f.running_in_test_harness) |
65a32f85 | 1617 | debug_store = TRUE; |
059ec3d9 PH |
1618 | |
1619 | /* The C standard says that the equivalent of setlocale(LC_ALL, "C") is obeyed | |
1620 | at the start of a program; however, it seems that some environments do not | |
1621 | follow this. A "strange" locale can affect the formatting of timestamps, so we | |
1622 | make quite sure. */ | |
1623 | ||
1624 | setlocale(LC_ALL, "C"); | |
1625 | ||
1626 | /* Set up the default handler for timing using alarm(). */ | |
1627 | ||
1628 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
1629 | ||
1630 | /* Ensure we have a buffer for constructing log entries. Use malloc directly, | |
1631 | because store_malloc writes a log entry on failure. */ | |
1632 | ||
40c90bca | 1633 | if (!(log_buffer = US malloc(LOG_BUFFER_SIZE))) |
9af3c549 | 1634 | exim_fail("exim: failed to get store for log buffer\n"); |
059ec3d9 | 1635 | |
6c6d6e48 TF |
1636 | /* Initialize the default log options. */ |
1637 | ||
1638 | bits_set(log_selector, log_selector_size, log_default); | |
1639 | ||
059ec3d9 PH |
1640 | /* Set log_stderr to stderr, provided that stderr exists. This gets reset to |
1641 | NULL when the daemon is run and the file is closed. We have to use this | |
1642 | indirection, because some systems don't allow writing to the variable "stderr". | |
1643 | */ | |
1644 | ||
1645 | if (fstat(fileno(stderr), &statbuf) >= 0) log_stderr = stderr; | |
1646 | ||
1647 | /* Arrange for the PCRE regex library to use our store functions. Note that | |
1648 | the normal calls are actually macros that add additional arguments for | |
1649 | debugging purposes so we have to assign specially constructed functions here. | |
1650 | The default is to use store in the stacking pool, but this is overridden in the | |
1651 | regex_must_compile() function. */ | |
1652 | ||
1653 | pcre_malloc = function_store_get; | |
1654 | pcre_free = function_dummy_free; | |
1655 | ||
1656 | /* Ensure there is a big buffer for temporary use in several places. It is put | |
1657 | in malloc store so that it can be freed for enlargement if necessary. */ | |
1658 | ||
1659 | big_buffer = store_malloc(big_buffer_size); | |
1660 | ||
1661 | /* Set up the handler for the data request signal, and set the initial | |
1662 | descriptive text. */ | |
1663 | ||
1664 | set_process_info("initializing"); | |
1665 | os_restarting_signal(SIGUSR1, usr1_handler); | |
1666 | ||
830832c9 HSHR |
1667 | /* If running in a dockerized environment, the TERM signal is only |
1668 | delegated to the PID 1 if we request it by setting an signal handler */ | |
1669 | if (getpid() == 1) signal(SIGTERM, term_handler); | |
1670 | ||
059ec3d9 PH |
1671 | /* SIGHUP is used to get the daemon to reconfigure. It gets set as appropriate |
1672 | in the daemon code. For the rest of Exim's uses, we ignore it. */ | |
1673 | ||
1674 | signal(SIGHUP, SIG_IGN); | |
1675 | ||
1676 | /* We don't want to die on pipe errors as the code is written to handle | |
1677 | the write error instead. */ | |
1678 | ||
1679 | signal(SIGPIPE, SIG_IGN); | |
1680 | ||
1681 | /* Under some circumstance on some OS, Exim can get called with SIGCHLD | |
1682 | set to SIG_IGN. This causes subprocesses that complete before the parent | |
1683 | process waits for them not to hang around, so when Exim calls wait(), nothing | |
1684 | is there. The wait() code has been made robust against this, but let's ensure | |
1685 | that SIGCHLD is set to SIG_DFL, because it's tidier to wait and get a process | |
1686 | ending status. We use sigaction rather than plain signal() on those OS where | |
1687 | SA_NOCLDWAIT exists, because we want to be sure it is turned off. (There was a | |
1688 | problem on AIX with this.) */ | |
1689 | ||
1690 | #ifdef SA_NOCLDWAIT | |
1691 | { | |
1692 | struct sigaction act; | |
1693 | act.sa_handler = SIG_DFL; | |
1694 | sigemptyset(&(act.sa_mask)); | |
1695 | act.sa_flags = 0; | |
1696 | sigaction(SIGCHLD, &act, NULL); | |
1697 | } | |
1698 | #else | |
1699 | signal(SIGCHLD, SIG_DFL); | |
1700 | #endif | |
1701 | ||
1702 | /* Save the arguments for use if we re-exec exim as a daemon after receiving | |
1703 | SIGHUP. */ | |
1704 | ||
1705 | sighup_argv = argv; | |
1706 | ||
1707 | /* Set up the version number. Set up the leading 'E' for the external form of | |
1708 | message ids, set the pointer to the internal form, and initialize it to | |
1709 | indicate no message being processed. */ | |
1710 | ||
1711 | version_init(); | |
1712 | message_id_option[0] = '-'; | |
1713 | message_id_external = message_id_option + 1; | |
1714 | message_id_external[0] = 'E'; | |
1715 | message_id = message_id_external + 1; | |
1716 | message_id[0] = 0; | |
1717 | ||
67d175de | 1718 | /* Set the umask to zero so that any files Exim creates using open() are |
2632889e PH |
1719 | created with the modes that it specifies. NOTE: Files created with fopen() have |
1720 | a problem, which was not recognized till rather late (February 2006). With this | |
1721 | umask, such files will be world writeable. (They are all content scanning files | |
1722 | in the spool directory, which isn't world-accessible, so this is not a | |
1723 | disaster, but it's untidy.) I don't want to change this overall setting, | |
1724 | however, because it will interact badly with the open() calls. Instead, there's | |
1725 | now a function called modefopen() that fiddles with the umask while calling | |
1726 | fopen(). */ | |
059ec3d9 | 1727 | |
67d175de | 1728 | (void)umask(0); |
059ec3d9 PH |
1729 | |
1730 | /* Precompile the regular expression for matching a message id. Keep this in | |
1731 | step with the code that generates ids in the accept.c module. We need to do | |
1732 | this here, because the -M options check their arguments for syntactic validity | |
1733 | using mac_ismsgid, which uses this. */ | |
1734 | ||
1735 | regex_ismsgid = | |
1736 | regex_must_compile(US"^(?:[^\\W_]{6}-){2}[^\\W_]{2}$", FALSE, TRUE); | |
1737 | ||
a5bd321b | 1738 | /* Precompile the regular expression that is used for matching an SMTP error |
d6a96edc PH |
1739 | code, possibly extended, at the start of an error message. Note that the |
1740 | terminating whitespace character is included. */ | |
a5bd321b PH |
1741 | |
1742 | regex_smtp_code = | |
1743 | regex_must_compile(US"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?", | |
1744 | FALSE, TRUE); | |
1745 | ||
a7cbbf50 PP |
1746 | #ifdef WHITELIST_D_MACROS |
1747 | /* Precompile the regular expression used to filter the content of macros | |
1748 | given to -D for permissibility. */ | |
1749 | ||
1750 | regex_whitelisted_macro = | |
1751 | regex_must_compile(US"^[A-Za-z0-9_/.-]*$", FALSE, TRUE); | |
1752 | #endif | |
1753 | ||
f38917cc JH |
1754 | for (i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL; |
1755 | ||
059ec3d9 PH |
1756 | /* If the program is called as "mailq" treat it as equivalent to "exim -bp"; |
1757 | this seems to be a generally accepted convention, since one finds symbolic | |
1758 | links called "mailq" in standard OS configurations. */ | |
1759 | ||
1760 | if ((namelen == 5 && Ustrcmp(argv[0], "mailq") == 0) || | |
1761 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/mailq", 6) == 0)) | |
1762 | { | |
1763 | list_queue = TRUE; | |
1764 | receiving_message = FALSE; | |
1765 | called_as = US"-mailq"; | |
1766 | } | |
1767 | ||
1768 | /* If the program is called as "rmail" treat it as equivalent to | |
1769 | "exim -i -oee", thus allowing UUCP messages to be input using non-SMTP mode, | |
1770 | i.e. preventing a single dot on a line from terminating the message, and | |
1771 | returning with zero return code, even in cases of error (provided an error | |
1772 | message has been sent). */ | |
1773 | ||
1774 | if ((namelen == 5 && Ustrcmp(argv[0], "rmail") == 0) || | |
1775 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rmail", 6) == 0)) | |
1776 | { | |
8768d548 | 1777 | f.dot_ends = FALSE; |
059ec3d9 PH |
1778 | called_as = US"-rmail"; |
1779 | errors_sender_rc = EXIT_SUCCESS; | |
1780 | } | |
1781 | ||
1782 | /* If the program is called as "rsmtp" treat it as equivalent to "exim -bS"; | |
1783 | this is a smail convention. */ | |
1784 | ||
1785 | if ((namelen == 5 && Ustrcmp(argv[0], "rsmtp") == 0) || | |
1786 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rsmtp", 6) == 0)) | |
1787 | { | |
1788 | smtp_input = smtp_batched_input = TRUE; | |
1789 | called_as = US"-rsmtp"; | |
1790 | } | |
1791 | ||
1792 | /* If the program is called as "runq" treat it as equivalent to "exim -q"; | |
1793 | this is a smail convention. */ | |
1794 | ||
1795 | if ((namelen == 4 && Ustrcmp(argv[0], "runq") == 0) || | |
1796 | (namelen > 4 && Ustrncmp(argv[0] + namelen - 5, "/runq", 5) == 0)) | |
1797 | { | |
1798 | queue_interval = 0; | |
1799 | receiving_message = FALSE; | |
1800 | called_as = US"-runq"; | |
1801 | } | |
1802 | ||
1803 | /* If the program is called as "newaliases" treat it as equivalent to | |
1804 | "exim -bi"; this is a sendmail convention. */ | |
1805 | ||
1806 | if ((namelen == 10 && Ustrcmp(argv[0], "newaliases") == 0) || | |
1807 | (namelen > 10 && Ustrncmp(argv[0] + namelen - 11, "/newaliases", 11) == 0)) | |
1808 | { | |
1809 | bi_option = TRUE; | |
1810 | receiving_message = FALSE; | |
1811 | called_as = US"-newaliases"; | |
1812 | } | |
1813 | ||
1814 | /* Save the original effective uid for a couple of uses later. It should | |
1815 | normally be root, but in some esoteric environments it may not be. */ | |
1816 | ||
1817 | original_euid = geteuid(); | |
3b7ac02c | 1818 | original_egid = getegid(); |
059ec3d9 PH |
1819 | |
1820 | /* Get the real uid and gid. If the caller is root, force the effective uid/gid | |
1821 | to be the same as the real ones. This makes a difference only if Exim is setuid | |
1822 | (or setgid) to something other than root, which could be the case in some | |
1823 | special configurations. */ | |
1824 | ||
1825 | real_uid = getuid(); | |
1826 | real_gid = getgid(); | |
1827 | ||
1828 | if (real_uid == root_uid) | |
1829 | { | |
9af3c549 JH |
1830 | if ((rv = setgid(real_gid))) |
1831 | exim_fail("exim: setgid(%ld) failed: %s\n", | |
1670ef10 | 1832 | (long int)real_gid, strerror(errno)); |
9af3c549 JH |
1833 | if ((rv = setuid(real_uid))) |
1834 | exim_fail("exim: setuid(%ld) failed: %s\n", | |
1670ef10 | 1835 | (long int)real_uid, strerror(errno)); |
059ec3d9 PH |
1836 | } |
1837 | ||
1838 | /* If neither the original real uid nor the original euid was root, Exim is | |
1839 | running in an unprivileged state. */ | |
1840 | ||
1841 | unprivileged = (real_uid != root_uid && original_euid != root_uid); | |
1842 | ||
059ec3d9 PH |
1843 | /* Scan the program's arguments. Some can be dealt with right away; others are |
1844 | simply recorded for checking and handling afterwards. Do a high-level switch | |
1845 | on the second character (the one after '-'), to save some effort. */ | |
1846 | ||
1847 | for (i = 1; i < argc; i++) | |
1848 | { | |
1849 | BOOL badarg = FALSE; | |
1850 | uschar *arg = argv[i]; | |
1851 | uschar *argrest; | |
1852 | int switchchar; | |
1853 | ||
1854 | /* An argument not starting with '-' is the start of a recipients list; | |
1855 | break out of the options-scanning loop. */ | |
1856 | ||
1857 | if (arg[0] != '-') | |
1858 | { | |
1859 | recipients_arg = i; | |
1860 | break; | |
1861 | } | |
1862 | ||
4c04137d | 1863 | /* An option consisting of -- terminates the options */ |
059ec3d9 PH |
1864 | |
1865 | if (Ustrcmp(arg, "--") == 0) | |
1866 | { | |
1867 | recipients_arg = i + 1; | |
1868 | break; | |
1869 | } | |
1870 | ||
1871 | /* Handle flagged options */ | |
1872 | ||
1873 | switchchar = arg[1]; | |
1874 | argrest = arg+2; | |
1875 | ||
1876 | /* Make all -ex options synonymous with -oex arguments, since that | |
1877 | is assumed by various callers. Also make -qR options synonymous with -R | |
1878 | options, as that seems to be required as well. Allow for -qqR too, and | |
1879 | the same for -S options. */ | |
1880 | ||
1881 | if (Ustrncmp(arg+1, "oe", 2) == 0 || | |
1882 | Ustrncmp(arg+1, "qR", 2) == 0 || | |
1883 | Ustrncmp(arg+1, "qS", 2) == 0) | |
1884 | { | |
1885 | switchchar = arg[2]; | |
1886 | argrest++; | |
1887 | } | |
1888 | else if (Ustrncmp(arg+1, "qqR", 3) == 0 || Ustrncmp(arg+1, "qqS", 3) == 0) | |
1889 | { | |
1890 | switchchar = arg[3]; | |
1891 | argrest += 2; | |
8768d548 | 1892 | f.queue_2stage = TRUE; |
059ec3d9 PH |
1893 | } |
1894 | ||
1895 | /* Make -r synonymous with -f, since it is a documented alias */ | |
1896 | ||
1897 | else if (arg[1] == 'r') switchchar = 'f'; | |
1898 | ||
1899 | /* Make -ov synonymous with -v */ | |
1900 | ||
1901 | else if (Ustrcmp(arg, "-ov") == 0) | |
1902 | { | |
1903 | switchchar = 'v'; | |
1904 | argrest++; | |
1905 | } | |
1906 | ||
4b2241d2 PP |
1907 | /* deal with --option_aliases */ |
1908 | else if (switchchar == '-') | |
1909 | { | |
1910 | if (Ustrcmp(argrest, "help") == 0) | |
1911 | { | |
1912 | usage_wanted = TRUE; | |
1913 | break; | |
1914 | } | |
1915 | else if (Ustrcmp(argrest, "version") == 0) | |
1916 | { | |
1917 | switchchar = 'b'; | |
73a46702 | 1918 | argrest = US"V"; |
4b2241d2 PP |
1919 | } |
1920 | } | |
1921 | ||
059ec3d9 PH |
1922 | /* High-level switch on active initial letter */ |
1923 | ||
1924 | switch(switchchar) | |
1925 | { | |
a3fb9793 PP |
1926 | |
1927 | /* sendmail uses -Ac and -Am to control which .cf file is used; | |
1928 | we ignore them. */ | |
1929 | case 'A': | |
1930 | if (*argrest == '\0') { badarg = TRUE; break; } | |
1931 | else | |
1932 | { | |
1933 | BOOL ignore = FALSE; | |
1934 | switch (*argrest) | |
1935 | { | |
1936 | case 'c': | |
1937 | case 'm': | |
1938 | if (*(argrest + 1) == '\0') | |
1939 | ignore = TRUE; | |
1940 | break; | |
1941 | } | |
1942 | if (!ignore) { badarg = TRUE; break; } | |
1943 | } | |
1944 | break; | |
1945 | ||
059ec3d9 PH |
1946 | /* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean |
1947 | so has no need of it. */ | |
1948 | ||
1949 | case 'B': | |
1950 | if (*argrest == 0) i++; /* Skip over the type */ | |
1951 | break; | |
1952 | ||
1953 | ||
1954 | case 'b': | |
1955 | receiving_message = FALSE; /* Reset TRUE for -bm, -bS, -bs below */ | |
1956 | ||
1957 | /* -bd: Run in daemon mode, awaiting SMTP connections. | |
1958 | -bdf: Ditto, but in the foreground. | |
1959 | */ | |
1960 | ||
1961 | if (*argrest == 'd') | |
1962 | { | |
8768d548 JH |
1963 | f.daemon_listen = TRUE; |
1964 | if (*(++argrest) == 'f') f.background_daemon = FALSE; | |
059ec3d9 PH |
1965 | else if (*argrest != 0) { badarg = TRUE; break; } |
1966 | } | |
1967 | ||
328895cc PH |
1968 | /* -be: Run in expansion test mode |
1969 | -bem: Ditto, but read a message from a file first | |
1970 | */ | |
059ec3d9 PH |
1971 | |
1972 | else if (*argrest == 'e') | |
328895cc | 1973 | { |
059ec3d9 | 1974 | expansion_test = checking = TRUE; |
328895cc PH |
1975 | if (argrest[1] == 'm') |
1976 | { | |
1977 | if (++i >= argc) { badarg = TRUE; break; } | |
1978 | expansion_test_message = argv[i]; | |
1979 | argrest++; | |
1980 | } | |
1981 | if (argrest[1] != 0) { badarg = TRUE; break; } | |
1982 | } | |
059ec3d9 | 1983 | |
f05da2e8 PH |
1984 | /* -bF: Run system filter test */ |
1985 | ||
1986 | else if (*argrest == 'F') | |
1987 | { | |
34e86e20 | 1988 | filter_test |= checking = FTEST_SYSTEM; |
f05da2e8 PH |
1989 | if (*(++argrest) != 0) { badarg = TRUE; break; } |
1990 | if (++i < argc) filter_test_sfile = argv[i]; else | |
9af3c549 | 1991 | exim_fail("exim: file name expected after %s\n", argv[i-1]); |
f05da2e8 PH |
1992 | } |
1993 | ||
1994 | /* -bf: Run user filter test | |
059ec3d9 PH |
1995 | -bfd: Set domain for filter testing |
1996 | -bfl: Set local part for filter testing | |
1997 | -bfp: Set prefix for filter testing | |
1998 | -bfs: Set suffix for filter testing | |
1999 | */ | |
2000 | ||
f05da2e8 | 2001 | else if (*argrest == 'f') |
059ec3d9 | 2002 | { |
f05da2e8 | 2003 | if (*(++argrest) == 0) |
059ec3d9 | 2004 | { |
34e86e20 | 2005 | filter_test |= checking = FTEST_USER; |
f05da2e8 | 2006 | if (++i < argc) filter_test_ufile = argv[i]; else |
9af3c549 | 2007 | exim_fail("exim: file name expected after %s\n", argv[i-1]); |
059ec3d9 PH |
2008 | } |
2009 | else | |
2010 | { | |
2011 | if (++i >= argc) | |
9af3c549 | 2012 | exim_fail("exim: string expected after %s\n", arg); |
059ec3d9 PH |
2013 | if (Ustrcmp(argrest, "d") == 0) ftest_domain = argv[i]; |
2014 | else if (Ustrcmp(argrest, "l") == 0) ftest_localpart = argv[i]; | |
2015 | else if (Ustrcmp(argrest, "p") == 0) ftest_prefix = argv[i]; | |
2016 | else if (Ustrcmp(argrest, "s") == 0) ftest_suffix = argv[i]; | |
2017 | else { badarg = TRUE; break; } | |
2018 | } | |
2019 | } | |
2020 | ||
2021 | /* -bh: Host checking - an IP address must follow. */ | |
2022 | ||
2023 | else if (Ustrcmp(argrest, "h") == 0 || Ustrcmp(argrest, "hc") == 0) | |
2024 | { | |
2025 | if (++i >= argc) { badarg = TRUE; break; } | |
2026 | sender_host_address = argv[i]; | |
8768d548 JH |
2027 | host_checking = checking = f.log_testing_mode = TRUE; |
2028 | f.host_checking_callout = argrest[1] == 'c'; | |
1a6230a3 | 2029 | message_logs = FALSE; |
059ec3d9 PH |
2030 | } |
2031 | ||
2032 | /* -bi: This option is used by sendmail to initialize *the* alias file, | |
2033 | though it has the -oA option to specify a different file. Exim has no | |
2034 | concept of *the* alias file, but since Sun's YP make script calls | |
2035 | sendmail this way, some support must be provided. */ | |
2036 | ||
2037 | else if (Ustrcmp(argrest, "i") == 0) bi_option = TRUE; | |
2038 | ||
98a90c36 PP |
2039 | /* -bI: provide information, of the type to follow after a colon. |
2040 | This is an Exim flag. */ | |
2041 | ||
2042 | else if (argrest[0] == 'I' && Ustrlen(argrest) >= 2 && argrest[1] == ':') | |
2043 | { | |
2044 | uschar *p = &argrest[2]; | |
2045 | info_flag = CMDINFO_HELP; | |
2046 | if (Ustrlen(p)) | |
2047 | { | |
2048 | if (strcmpic(p, CUS"sieve") == 0) | |
2049 | { | |
2050 | info_flag = CMDINFO_SIEVE; | |
2051 | info_stdout = TRUE; | |
2052 | } | |
36a3ae5f PP |
2053 | else if (strcmpic(p, CUS"dscp") == 0) |
2054 | { | |
2055 | info_flag = CMDINFO_DSCP; | |
2056 | info_stdout = TRUE; | |
2057 | } | |
98a90c36 PP |
2058 | else if (strcmpic(p, CUS"help") == 0) |
2059 | { | |
2060 | info_stdout = TRUE; | |
2061 | } | |
2062 | } | |
2063 | } | |
2064 | ||
059ec3d9 PH |
2065 | /* -bm: Accept and deliver message - the default option. Reinstate |
2066 | receiving_message, which got turned off for all -b options. */ | |
2067 | ||
2068 | else if (Ustrcmp(argrest, "m") == 0) receiving_message = TRUE; | |
2069 | ||
8544e77a PP |
2070 | /* -bmalware: test the filename given for malware */ |
2071 | ||
2072 | else if (Ustrcmp(argrest, "malware") == 0) | |
2073 | { | |
2074 | if (++i >= argc) { badarg = TRUE; break; } | |
34e86e20 | 2075 | checking = TRUE; |
8544e77a PP |
2076 | malware_test_file = argv[i]; |
2077 | } | |
2078 | ||
059ec3d9 PH |
2079 | /* -bnq: For locally originating messages, do not qualify unqualified |
2080 | addresses. In the envelope, this causes errors; in header lines they | |
2081 | just get left. */ | |
2082 | ||
2083 | else if (Ustrcmp(argrest, "nq") == 0) | |
2084 | { | |
8768d548 JH |
2085 | f.allow_unqualified_sender = FALSE; |
2086 | f.allow_unqualified_recipient = FALSE; | |
059ec3d9 PH |
2087 | } |
2088 | ||
2089 | /* -bpxx: List the contents of the mail queue, in various forms. If | |
2090 | the option is -bpc, just a queue count is needed. Otherwise, if the | |
2091 | first letter after p is r, then order is random. */ | |
2092 | ||
2093 | else if (*argrest == 'p') | |
2094 | { | |
2095 | if (*(++argrest) == 'c') | |
2096 | { | |
2097 | count_queue = TRUE; | |
2098 | if (*(++argrest) != 0) badarg = TRUE; | |
2099 | break; | |
2100 | } | |
2101 | ||
2102 | if (*argrest == 'r') | |
2103 | { | |
2104 | list_queue_option = 8; | |
2105 | argrest++; | |
2106 | } | |
2107 | else list_queue_option = 0; | |
2108 | ||
2109 | list_queue = TRUE; | |
2110 | ||
2111 | /* -bp: List the contents of the mail queue, top-level only */ | |
2112 | ||
2113 | if (*argrest == 0) {} | |
2114 | ||
2115 | /* -bpu: List the contents of the mail queue, top-level undelivered */ | |
2116 | ||
2117 | else if (Ustrcmp(argrest, "u") == 0) list_queue_option += 1; | |
2118 | ||
2119 | /* -bpa: List the contents of the mail queue, including all delivered */ | |
2120 | ||
2121 | else if (Ustrcmp(argrest, "a") == 0) list_queue_option += 2; | |
2122 | ||
2123 | /* Unknown after -bp[r] */ | |
2124 | ||
2125 | else | |
2126 | { | |
2127 | badarg = TRUE; | |
2128 | break; | |
2129 | } | |
2130 | } | |
2131 | ||
2132 | ||
2133 | /* -bP: List the configuration variables given as the address list. | |
2134 | Force -v, so configuration errors get displayed. */ | |
2135 | ||
2136 | else if (Ustrcmp(argrest, "P") == 0) | |
2137 | { | |
bf3c2c6b HSHR |
2138 | /* -bP config: we need to setup here, because later, |
2139 | * when list_options is checked, the config is read already */ | |
2140 | if (argv[i+1] && Ustrcmp(argv[i+1], "config") == 0) | |
2141 | { | |
2142 | list_config = TRUE; | |
2143 | readconf_save_config(version_string); | |
2144 | } | |
2145 | else | |
2146 | { | |
2147 | list_options = TRUE; | |
2148 | debug_selector |= D_v; | |
2149 | debug_file = stderr; | |
2150 | } | |
059ec3d9 PH |
2151 | } |
2152 | ||
2153 | /* -brt: Test retry configuration lookup */ | |
2154 | ||
2155 | else if (Ustrcmp(argrest, "rt") == 0) | |
2156 | { | |
34e86e20 | 2157 | checking = TRUE; |
059ec3d9 PH |
2158 | test_retry_arg = i + 1; |
2159 | goto END_ARG; | |
2160 | } | |
2161 | ||
2162 | /* -brw: Test rewrite configuration */ | |
2163 | ||
2164 | else if (Ustrcmp(argrest, "rw") == 0) | |
2165 | { | |
34e86e20 | 2166 | checking = TRUE; |
059ec3d9 PH |
2167 | test_rewrite_arg = i + 1; |
2168 | goto END_ARG; | |
2169 | } | |
2170 | ||
2171 | /* -bS: Read SMTP commands on standard input, but produce no replies - | |
2172 | all errors are reported by sending messages. */ | |
2173 | ||
2174 | else if (Ustrcmp(argrest, "S") == 0) | |
2175 | smtp_input = smtp_batched_input = receiving_message = TRUE; | |
2176 | ||
2177 | /* -bs: Read SMTP commands on standard input and produce SMTP replies | |
2178 | on standard output. */ | |
2179 | ||
2180 | else if (Ustrcmp(argrest, "s") == 0) smtp_input = receiving_message = TRUE; | |
2181 | ||
2182 | /* -bt: address testing mode */ | |
2183 | ||
2184 | else if (Ustrcmp(argrest, "t") == 0) | |
8768d548 | 2185 | f.address_test_mode = checking = f.log_testing_mode = TRUE; |
059ec3d9 PH |
2186 | |
2187 | /* -bv: verify addresses */ | |
2188 | ||
2189 | else if (Ustrcmp(argrest, "v") == 0) | |
8768d548 | 2190 | verify_address_mode = checking = f.log_testing_mode = TRUE; |
059ec3d9 PH |
2191 | |
2192 | /* -bvs: verify sender addresses */ | |
2193 | ||
2194 | else if (Ustrcmp(argrest, "vs") == 0) | |
2195 | { | |
8768d548 | 2196 | verify_address_mode = checking = f.log_testing_mode = TRUE; |
059ec3d9 PH |
2197 | verify_as_sender = TRUE; |
2198 | } | |
2199 | ||
2200 | /* -bV: Print version string and support details */ | |
2201 | ||
2202 | else if (Ustrcmp(argrest, "V") == 0) | |
2203 | { | |
2204 | printf("Exim version %s #%s built %s\n", version_string, | |
2205 | version_cnumber, version_date); | |
2206 | printf("%s\n", CS version_copyright); | |
2207 | version_printed = TRUE; | |
2208 | show_whats_supported(stdout); | |
8768d548 | 2209 | f.log_testing_mode = TRUE; |
059ec3d9 PH |
2210 | } |
2211 | ||
9ee44efb PP |
2212 | /* -bw: inetd wait mode, accept a listening socket as stdin */ |
2213 | ||
2214 | else if (*argrest == 'w') | |
2215 | { | |
8768d548 JH |
2216 | f.inetd_wait_mode = TRUE; |
2217 | f.background_daemon = FALSE; | |
2218 | f.daemon_listen = TRUE; | |
9ee44efb | 2219 | if (*(++argrest) != '\0') |
9af3c549 JH |
2220 | if ((inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE)) <= 0) |
2221 | exim_fail("exim: bad time value %s: abandoned\n", argv[i]); | |
9ee44efb PP |
2222 | } |
2223 | ||
059ec3d9 PH |
2224 | else badarg = TRUE; |
2225 | break; | |
2226 | ||
2227 | ||
2228 | /* -C: change configuration file list; ignore if it isn't really | |
2229 | a change! Enforce a prefix check if required. */ | |
2230 | ||
2231 | case 'C': | |
2232 | if (*argrest == 0) | |
2233 | { | |
2234 | if(++i < argc) argrest = argv[i]; else | |
2235 | { badarg = TRUE; break; } | |
2236 | } | |
2237 | if (Ustrcmp(config_main_filelist, argrest) != 0) | |
2238 | { | |
2239 | #ifdef ALT_CONFIG_PREFIX | |
2240 | int sep = 0; | |
2241 | int len = Ustrlen(ALT_CONFIG_PREFIX); | |
863bd541 | 2242 | const uschar *list = argrest; |
059ec3d9 PH |
2243 | uschar *filename; |
2244 | while((filename = string_nextinlist(&list, &sep, big_buffer, | |
2245 | big_buffer_size)) != NULL) | |
2246 | { | |
2247 | if ((Ustrlen(filename) < len || | |
2248 | Ustrncmp(filename, ALT_CONFIG_PREFIX, len) != 0 || | |
2249 | Ustrstr(filename, "/../") != NULL) && | |
2250 | (Ustrcmp(filename, "/dev/null") != 0 || real_uid != root_uid)) | |
9af3c549 | 2251 | exim_fail("-C Permission denied\n"); |
059ec3d9 PH |
2252 | } |
2253 | #endif | |
261dc43e DW |
2254 | if (real_uid != root_uid) |
2255 | { | |
90b6341f | 2256 | #ifdef TRUSTED_CONFIG_LIST |
261dc43e | 2257 | |
90b6341f DW |
2258 | if (real_uid != exim_uid |
2259 | #ifdef CONFIGURE_OWNER | |
2260 | && real_uid != config_uid | |
2261 | #endif | |
2262 | ) | |
8768d548 | 2263 | f.trusted_config = FALSE; |
261dc43e DW |
2264 | else |
2265 | { | |
90b6341f | 2266 | FILE *trust_list = Ufopen(TRUSTED_CONFIG_LIST, "rb"); |
261dc43e DW |
2267 | if (trust_list) |
2268 | { | |
2269 | struct stat statbuf; | |
2270 | ||
2271 | if (fstat(fileno(trust_list), &statbuf) != 0 || | |
2272 | (statbuf.st_uid != root_uid /* owner not root */ | |
2273 | #ifdef CONFIGURE_OWNER | |
2274 | && statbuf.st_uid != config_uid /* owner not the special one */ | |
2275 | #endif | |
2276 | ) || /* or */ | |
2277 | (statbuf.st_gid != root_gid /* group not root */ | |
2278 | #ifdef CONFIGURE_GROUP | |
2279 | && statbuf.st_gid != config_gid /* group not the special one */ | |
2280 | #endif | |
2281 | && (statbuf.st_mode & 020) != 0 /* group writeable */ | |
2282 | ) || /* or */ | |
2283 | (statbuf.st_mode & 2) != 0) /* world writeable */ | |
2284 | { | |
8768d548 | 2285 | f.trusted_config = FALSE; |
261dc43e DW |
2286 | fclose(trust_list); |
2287 | } | |
2288 | else | |
2289 | { | |
2290 | /* Well, the trust list at least is up to scratch... */ | |
2291 | void *reset_point = store_get(0); | |
90b6341f DW |
2292 | uschar *trusted_configs[32]; |
2293 | int nr_configs = 0; | |
261dc43e DW |
2294 | int i = 0; |
2295 | ||
2296 | while (Ufgets(big_buffer, big_buffer_size, trust_list)) | |
2297 | { | |
2298 | uschar *start = big_buffer, *nl; | |
2299 | while (*start && isspace(*start)) | |
2300 | start++; | |
1e83d68b | 2301 | if (*start != '/') |
261dc43e DW |
2302 | continue; |
2303 | nl = Ustrchr(start, '\n'); | |
2304 | if (nl) | |
2305 | *nl = 0; | |
90b6341f DW |
2306 | trusted_configs[nr_configs++] = string_copy(start); |
2307 | if (nr_configs == 32) | |
261dc43e DW |
2308 | break; |
2309 | } | |
2310 | fclose(trust_list); | |
2311 | ||
90b6341f | 2312 | if (nr_configs) |
261dc43e DW |
2313 | { |
2314 | int sep = 0; | |
55414b25 | 2315 | const uschar *list = argrest; |
261dc43e | 2316 | uschar *filename; |
8768d548 | 2317 | while (f.trusted_config && (filename = string_nextinlist(&list, |
261dc43e DW |
2318 | &sep, big_buffer, big_buffer_size)) != NULL) |
2319 | { | |
90b6341f | 2320 | for (i=0; i < nr_configs; i++) |
261dc43e | 2321 | { |
90b6341f | 2322 | if (Ustrcmp(filename, trusted_configs[i]) == 0) |
261dc43e DW |
2323 | break; |
2324 | } | |
90b6341f | 2325 | if (i == nr_configs) |
261dc43e | 2326 | { |
8768d548 | 2327 | f.trusted_config = FALSE; |
261dc43e DW |
2328 | break; |
2329 | } | |
2330 | } | |
1e83d68b | 2331 | store_reset(reset_point); |
261dc43e DW |
2332 | } |
2333 | else | |
2334 | { | |
2335 | /* No valid prefixes found in trust_list file. */ | |
8768d548 | 2336 | f.trusted_config = FALSE; |
261dc43e DW |
2337 | } |
2338 | } | |
2339 | } | |
2340 | else | |
2341 | { | |
2342 | /* Could not open trust_list file. */ | |
8768d548 | 2343 | f.trusted_config = FALSE; |
261dc43e DW |
2344 | } |
2345 | } | |
2346 | #else | |
2347 | /* Not root; don't trust config */ | |
8768d548 | 2348 | f.trusted_config = FALSE; |
261dc43e DW |
2349 | #endif |
2350 | } | |
059ec3d9 PH |
2351 | |
2352 | config_main_filelist = argrest; | |
8768d548 | 2353 | f.config_changed = TRUE; |
059ec3d9 PH |
2354 | } |
2355 | break; | |
2356 | ||
2357 | ||
2358 | /* -D: set up a macro definition */ | |
2359 | ||
2360 | case 'D': | |
9af3c549 JH |
2361 | #ifdef DISABLE_D_OPTION |
2362 | exim_fail("exim: -D is not available in this Exim binary\n"); | |
2363 | #else | |
059ec3d9 PH |
2364 | { |
2365 | int ptr = 0; | |
059ec3d9 PH |
2366 | macro_item *m; |
2367 | uschar name[24]; | |
2368 | uschar *s = argrest; | |
2369 | ||
4ab69ec7 | 2370 | opt_D_used = TRUE; |
059ec3d9 PH |
2371 | while (isspace(*s)) s++; |
2372 | ||
2373 | if (*s < 'A' || *s > 'Z') | |
9af3c549 | 2374 | exim_fail("exim: macro name set by -D must start with " |
059ec3d9 | 2375 | "an upper case letter\n"); |
059ec3d9 PH |
2376 | |
2377 | while (isalnum(*s) || *s == '_') | |
2378 | { | |
2379 | if (ptr < sizeof(name)-1) name[ptr++] = *s; | |
2380 | s++; | |
2381 | } | |
2382 | name[ptr] = 0; | |
2383 | if (ptr == 0) { badarg = TRUE; break; } | |
2384 | while (isspace(*s)) s++; | |
2385 | if (*s != 0) | |
2386 | { | |
2387 | if (*s++ != '=') { badarg = TRUE; break; } | |
2388 | while (isspace(*s)) s++; | |
2389 | } | |
2390 | ||
85e03244 | 2391 | for (m = macros_user; m; m = m->next) |
1a7c9a48 | 2392 | if (Ustrcmp(m->name, name) == 0) |
9af3c549 | 2393 | exim_fail("exim: duplicated -D in command line\n"); |
059ec3d9 | 2394 | |
85e03244 | 2395 | m = macro_create(name, s, TRUE); |
059ec3d9 PH |
2396 | |
2397 | if (clmacro_count >= MAX_CLMACROS) | |
9af3c549 | 2398 | exim_fail("exim: too many -D options on command line\n"); |
1a7c9a48 JH |
2399 | clmacros[clmacro_count++] = string_sprintf("-D%s=%s", m->name, |
2400 | m->replacement); | |
059ec3d9 PH |
2401 | } |
2402 | #endif | |
2403 | break; | |
2404 | ||
2405 | /* -d: Set debug level (see also -v below) or set the drop_cr option. | |
8e669ac1 | 2406 | The latter is now a no-op, retained for compatibility only. If -dd is used, |
3d235903 | 2407 | debugging subprocesses of the daemon is disabled. */ |
059ec3d9 PH |
2408 | |
2409 | case 'd': | |
2410 | if (Ustrcmp(argrest, "ropcr") == 0) | |
2411 | { | |
2412 | /* drop_cr = TRUE; */ | |
2413 | } | |
2414 | ||
2415 | /* Use an intermediate variable so that we don't set debugging while | |
2416 | decoding the debugging bits. */ | |
2417 | ||
2418 | else | |
2419 | { | |
2420 | unsigned int selector = D_default; | |
2421 | debug_selector = 0; | |
2422 | debug_file = NULL; | |
3d235903 PH |
2423 | if (*argrest == 'd') |
2424 | { | |
8768d548 | 2425 | f.debug_daemon = TRUE; |
3d235903 PH |
2426 | argrest++; |
2427 | } | |
059ec3d9 | 2428 | if (*argrest != 0) |
6c6d6e48 TF |
2429 | decode_bits(&selector, 1, debug_notall, argrest, |
2430 | debug_options, debug_options_count, US"debug", 0); | |
059ec3d9 PH |
2431 | debug_selector = selector; |
2432 | } | |
2433 | break; | |
2434 | ||
2435 | ||
2436 | /* -E: This is a local error message. This option is not intended for | |
2437 | external use at all, but is not restricted to trusted callers because it | |
2438 | does no harm (just suppresses certain error messages) and if Exim is run | |
2439 | not setuid root it won't always be trusted when it generates error | |
2440 | messages using this option. If there is a message id following -E, point | |
2441 | message_reference at it, for logging. */ | |
2442 | ||
2443 | case 'E': | |
8768d548 | 2444 | f.local_error_message = TRUE; |
059ec3d9 PH |
2445 | if (mac_ismsgid(argrest)) message_reference = argrest; |
2446 | break; | |
2447 | ||
2448 | ||
2449 | /* -ex: The vacation program calls sendmail with the undocumented "-eq" | |
2450 | option, so it looks as if historically the -oex options are also callable | |
2451 | without the leading -o. So we have to accept them. Before the switch, | |
2452 | anything starting -oe has been converted to -e. Exim does not support all | |
2453 | of the sendmail error options. */ | |
2454 | ||
2455 | case 'e': | |
2456 | if (Ustrcmp(argrest, "e") == 0) | |
2457 | { | |
2458 | arg_error_handling = ERRORS_SENDER; | |
2459 | errors_sender_rc = EXIT_SUCCESS; | |
2460 | } | |
2461 | else if (Ustrcmp(argrest, "m") == 0) arg_error_handling = ERRORS_SENDER; | |
2462 | else if (Ustrcmp(argrest, "p") == 0) arg_error_handling = ERRORS_STDERR; | |
2463 | else if (Ustrcmp(argrest, "q") == 0) arg_error_handling = ERRORS_STDERR; | |
2464 | else if (Ustrcmp(argrest, "w") == 0) arg_error_handling = ERRORS_SENDER; | |
2465 | else badarg = TRUE; | |
2466 | break; | |
2467 | ||
2468 | ||
2469 | /* -F: Set sender's full name, used instead of the gecos entry from | |
2470 | the password file. Since users can usually alter their gecos entries, | |
2471 | there's no security involved in using this instead. The data can follow | |
2472 | the -F or be in the next argument. */ | |
2473 | ||
2474 | case 'F': | |
2475 | if (*argrest == 0) | |
2476 | { | |
2477 | if(++i < argc) argrest = argv[i]; else | |
2478 | { badarg = TRUE; break; } | |
2479 | } | |
2480 | originator_name = argrest; | |
8768d548 | 2481 | f.sender_name_forced = TRUE; |
059ec3d9 PH |
2482 | break; |
2483 | ||
2484 | ||
2485 | /* -f: Set sender's address - this value is only actually used if Exim is | |
2486 | run by a trusted user, or if untrusted_set_sender is set and matches the | |
2487 | address, except that the null address can always be set by any user. The | |
2488 | test for this happens later, when the value given here is ignored when not | |
2489 | permitted. For an untrusted user, the actual sender is still put in Sender: | |
2490 | if it doesn't match the From: header (unless no_local_from_check is set). | |
2491 | The data can follow the -f or be in the next argument. The -r switch is an | |
2492 | obsolete form of -f but since there appear to be programs out there that | |
2493 | use anything that sendmail has ever supported, better accept it - the | |
2494 | synonymizing is done before the switch above. | |
2495 | ||
2496 | At this stage, we must allow domain literal addresses, because we don't | |
2497 | know what the setting of allow_domain_literals is yet. Ditto for trailing | |
2498 | dots and strip_trailing_dot. */ | |
2499 | ||
2500 | case 'f': | |
2501 | { | |
250b6871 | 2502 | int dummy_start, dummy_end; |
059ec3d9 PH |
2503 | uschar *errmess; |
2504 | if (*argrest == 0) | |
2505 | { | |
2506 | if (i+1 < argc) argrest = argv[++i]; else | |
2507 | { badarg = TRUE; break; } | |
2508 | } | |
2509 | if (*argrest == 0) | |
059ec3d9 | 2510 | sender_address = string_sprintf(""); /* Ensure writeable memory */ |
059ec3d9 PH |
2511 | else |
2512 | { | |
2513 | uschar *temp = argrest + Ustrlen(argrest) - 1; | |
2514 | while (temp >= argrest && isspace(*temp)) temp--; | |
2515 | if (temp >= argrest && *temp == '.') f_end_dot = TRUE; | |
2516 | allow_domain_literals = TRUE; | |
2517 | strip_trailing_dot = TRUE; | |
8c5d388a | 2518 | #ifdef SUPPORT_I18N |
250b6871 JH |
2519 | allow_utf8_domains = TRUE; |
2520 | #endif | |
2521 | sender_address = parse_extract_address(argrest, &errmess, | |
2522 | &dummy_start, &dummy_end, &sender_address_domain, TRUE); | |
8c5d388a | 2523 | #ifdef SUPPORT_I18N |
250b6871 JH |
2524 | message_smtputf8 = string_is_utf8(sender_address); |
2525 | allow_utf8_domains = FALSE; | |
2526 | #endif | |
059ec3d9 PH |
2527 | allow_domain_literals = FALSE; |
2528 | strip_trailing_dot = FALSE; | |
9af3c549 JH |
2529 | if (!sender_address) |
2530 | exim_fail("exim: bad -f address \"%s\": %s\n", argrest, errmess); | |
059ec3d9 | 2531 | } |
8768d548 | 2532 | f.sender_address_forced = TRUE; |
059ec3d9 PH |
2533 | } |
2534 | break; | |
2535 | ||
a3fb9793 | 2536 | /* -G: sendmail invocation to specify that it's a gateway submission and |
f4ee74ac PP |
2537 | sendmail may complain about problems instead of fixing them. |
2538 | We make it equivalent to an ACL "control = suppress_local_fixups" and do | |
2539 | not at this time complain about problems. */ | |
059ec3d9 PH |
2540 | |
2541 | case 'G': | |
f4ee74ac | 2542 | flag_G = TRUE; |
059ec3d9 PH |
2543 | break; |
2544 | ||
2545 | /* -h: Set the hop count for an incoming message. Exim does not currently | |
2546 | support this; it always computes it by counting the Received: headers. | |
2547 | To put it in will require a change to the spool header file format. */ | |
2548 | ||
2549 | case 'h': | |
2550 | if (*argrest == 0) | |
2551 | { | |
2552 | if(++i < argc) argrest = argv[i]; else | |
2553 | { badarg = TRUE; break; } | |
2554 | } | |
2555 | if (!isdigit(*argrest)) badarg = TRUE; | |
2556 | break; | |
2557 | ||
2558 | ||
2559 | /* -i: Set flag so dot doesn't end non-SMTP input (same as -oi, seems | |
2560 | not to be documented for sendmail but mailx (at least) uses it) */ | |
2561 | ||
2562 | case 'i': | |
8768d548 | 2563 | if (*argrest == 0) f.dot_ends = FALSE; else badarg = TRUE; |
059ec3d9 PH |
2564 | break; |
2565 | ||
2566 | ||
a3fb9793 PP |
2567 | /* -L: set the identifier used for syslog; equivalent to setting |
2568 | syslog_processname in the config file, but needs to be an admin option. */ | |
2569 | ||
2570 | case 'L': | |
2571 | if (*argrest == '\0') | |
2572 | { | |
2573 | if(++i < argc) argrest = argv[i]; else | |
2574 | { badarg = TRUE; break; } | |
2575 | } | |
9af3c549 JH |
2576 | if ((sz = Ustrlen(argrest)) > 32) |
2577 | exim_fail("exim: the -L syslog name is too long: \"%s\"\n", argrest); | |
a3fb9793 | 2578 | if (sz < 1) |
9af3c549 | 2579 | exim_fail("exim: the -L syslog name is too short\n"); |
a3fb9793 PP |
2580 | cmdline_syslog_name = argrest; |
2581 | break; | |
2582 | ||
059ec3d9 PH |
2583 | case 'M': |
2584 | receiving_message = FALSE; | |
2585 | ||
2586 | /* -MC: continue delivery of another message via an existing open | |
2587 | file descriptor. This option is used for an internal call by the | |
2588 | smtp transport when there is a pending message waiting to go to an | |
2589 | address to which it has got a connection. Five subsequent arguments are | |
2590 | required: transport name, host name, IP address, sequence number, and | |
2591 | message_id. Transports may decline to create new processes if the sequence | |
2592 | number gets too big. The channel is stdin. This (-MC) must be the last | |
2593 | argument. There's a subsequent check that the real-uid is privileged. | |
2594 | ||
2595 | If we are running in the test harness. delay for a bit, to let the process | |
2596 | that set this one up complete. This makes for repeatability of the logging, | |
2597 | etc. output. */ | |
2598 | ||
2599 | if (Ustrcmp(argrest, "C") == 0) | |
2600 | { | |
41c7c167 PH |
2601 | union sockaddr_46 interface_sock; |
2602 | EXIM_SOCKLEN_T size = sizeof(interface_sock); | |
2603 | ||
059ec3d9 | 2604 | if (argc != i + 6) |
9af3c549 | 2605 | exim_fail("exim: too many or too few arguments after -MC\n"); |
059ec3d9 PH |
2606 | |
2607 | if (msg_action_arg >= 0) | |
9af3c549 | 2608 | exim_fail("exim: incompatible arguments\n"); |
059ec3d9 PH |
2609 | |
2610 | continue_transport = argv[++i]; | |
2611 | continue_hostname = argv[++i]; | |
2612 | continue_host_address = argv[++i]; | |
2613 | continue_sequence = Uatoi(argv[++i]); | |
2614 | msg_action = MSG_DELIVER; | |
2615 | msg_action_arg = ++i; | |
2616 | forced_delivery = TRUE; | |
2617 | queue_run_pid = passed_qr_pid; | |
2618 | queue_run_pipe = passed_qr_pipe; | |
2619 | ||
2620 | if (!mac_ismsgid(argv[i])) | |
9af3c549 | 2621 | exim_fail("exim: malformed message id %s after -MC option\n", |
059ec3d9 | 2622 | argv[i]); |
059ec3d9 | 2623 | |
875512a3 JH |
2624 | /* Set up $sending_ip_address and $sending_port, unless proxied */ |
2625 | ||
5013d912 | 2626 | if (!continue_proxy_cipher) |
875512a3 JH |
2627 | if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock), |
2628 | &size) == 0) | |
2629 | sending_ip_address = host_ntoa(-1, &interface_sock, NULL, | |
2630 | &sending_port); | |
2631 | else | |
9af3c549 | 2632 | exim_fail("exim: getsockname() failed after -MC option: %s\n", |
875512a3 | 2633 | strerror(errno)); |
41c7c167 | 2634 | |
8768d548 | 2635 | if (f.running_in_test_harness) millisleep(500); |
059ec3d9 PH |
2636 | break; |
2637 | } | |
2638 | ||
2d14f397 JH |
2639 | else if (*argrest == 'C' && argrest[1] && !argrest[2]) |
2640 | { | |
875512a3 | 2641 | switch(argrest[1]) |
2d14f397 | 2642 | { |
059ec3d9 PH |
2643 | /* -MCA: set the smtp_authenticated flag; this is useful only when it |
2644 | precedes -MC (see above). The flag indicates that the host to which | |
2645 | Exim is connected has accepted an AUTH sequence. */ | |
2646 | ||
8768d548 | 2647 | case 'A': f.smtp_authenticated = TRUE; break; |
059ec3d9 | 2648 | |
6c1c3d1d WB |
2649 | /* -MCD: set the smtp_use_dsn flag; this indicates that the host |
2650 | that exim is connected to supports the esmtp extension DSN */ | |
28b3821f | 2651 | |
14de8063 | 2652 | case 'D': smtp_peer_options |= OPTION_DSN; break; |
6c1c3d1d | 2653 | |
e37f8a84 | 2654 | /* -MCG: set the queue name, to a non-default value */ |
28b3821f | 2655 | |
2d14f397 JH |
2656 | case 'G': if (++i < argc) queue_name = string_copy(argv[i]); |
2657 | else badarg = TRUE; | |
2658 | break; | |
2659 | ||
2660 | /* -MCK: the peer offered CHUNKING. Must precede -MC */ | |
2661 | ||
14de8063 | 2662 | case 'K': smtp_peer_options |= OPTION_CHUNKING; break; |
28b3821f | 2663 | |
059ec3d9 PH |
2664 | /* -MCP: set the smtp_use_pipelining flag; this is useful only when |
2665 | it preceded -MC (see above) */ | |
2666 | ||
14de8063 | 2667 | case 'P': smtp_peer_options |= OPTION_PIPE; break; |
059ec3d9 PH |
2668 | |
2669 | /* -MCQ: pass on the pid of the queue-running process that started | |
2670 | this chain of deliveries and the fd of its synchronizing pipe; this | |
2671 | is useful only when it precedes -MC (see above) */ | |
2672 | ||
2d14f397 JH |
2673 | case 'Q': if (++i < argc) passed_qr_pid = (pid_t)(Uatol(argv[i])); |
2674 | else badarg = TRUE; | |
2675 | if (++i < argc) passed_qr_pipe = (int)(Uatol(argv[i])); | |
2676 | else badarg = TRUE; | |
2677 | break; | |
059ec3d9 PH |
2678 | |
2679 | /* -MCS: set the smtp_use_size flag; this is useful only when it | |
2680 | precedes -MC (see above) */ | |
2681 | ||
14de8063 | 2682 | case 'S': smtp_peer_options |= OPTION_SIZE; break; |
059ec3d9 | 2683 | |
2d14f397 | 2684 | #ifdef SUPPORT_TLS |
875512a3 | 2685 | /* -MCt: similar to -MCT below but the connection is still open |
aded2255 | 2686 | via a proxy process which handles the TLS context and coding. |
5013d912 JH |
2687 | Require three arguments for the proxied local address and port, |
2688 | and the TLS cipher. */ | |
875512a3 | 2689 | |
5013d912 | 2690 | case 't': if (++i < argc) sending_ip_address = argv[i]; |
875512a3 JH |
2691 | else badarg = TRUE; |
2692 | if (++i < argc) sending_port = (int)(Uatol(argv[i])); | |
2693 | else badarg = TRUE; | |
5013d912 JH |
2694 | if (++i < argc) continue_proxy_cipher = argv[i]; |
2695 | else badarg = TRUE; | |
875512a3 JH |
2696 | /*FALLTHROUGH*/ |
2697 | ||
059ec3d9 PH |
2698 | /* -MCT: set the tls_offered flag; this is useful only when it |
2699 | precedes -MC (see above). The flag indicates that the host to which | |
2700 | Exim is connected has offered TLS support. */ | |
2701 | ||
14de8063 | 2702 | case 'T': smtp_peer_options |= OPTION_TLS; break; |
2d14f397 JH |
2703 | #endif |
2704 | ||
2705 | default: badarg = TRUE; break; | |
2706 | } | |
8ac90765 JH |
2707 | break; |
2708 | } | |
2709 | ||
059ec3d9 PH |
2710 | /* -M[x]: various operations on the following list of message ids: |
2711 | -M deliver the messages, ignoring next retry times and thawing | |
2712 | -Mc deliver the messages, checking next retry times, no thawing | |
2713 | -Mf freeze the messages | |
2714 | -Mg give up on the messages | |
2715 | -Mt thaw the messages | |
2716 | -Mrm remove the messages | |
2717 | In the above cases, this must be the last option. There are also the | |
2718 | following options which are followed by a single message id, and which | |
2719 | act on that message. Some of them use the "recipient" addresses as well. | |
2720 | -Mar add recipient(s) | |
2721 | -Mmad mark all recipients delivered | |
2722 | -Mmd mark recipients(s) delivered | |
2723 | -Mes edit sender | |
0ef732d9 | 2724 | -Mset load a message for use with -be |
059ec3d9 | 2725 | -Mvb show body |
a96603a0 | 2726 | -Mvc show copy (of whole message, in RFC 2822 format) |
059ec3d9 PH |
2727 | -Mvh show header |
2728 | -Mvl show log | |
2729 | */ | |
2730 | ||
2731 | else if (*argrest == 0) | |
2732 | { | |
2733 | msg_action = MSG_DELIVER; | |
8768d548 | 2734 | forced_delivery = f.deliver_force_thaw = TRUE; |
059ec3d9 PH |
2735 | } |
2736 | else if (Ustrcmp(argrest, "ar") == 0) | |
2737 | { | |
2738 | msg_action = MSG_ADD_RECIPIENT; | |
2739 | one_msg_action = TRUE; | |
2740 | } | |
2741 | else if (Ustrcmp(argrest, "c") == 0) msg_action = MSG_DELIVER; | |
2742 | else if (Ustrcmp(argrest, "es") == 0) | |
2743 | { | |
2744 | msg_action = MSG_EDIT_SENDER; | |
2745 | one_msg_action = TRUE; | |
2746 | } | |
2747 | else if (Ustrcmp(argrest, "f") == 0) msg_action = MSG_FREEZE; | |
2748 | else if (Ustrcmp(argrest, "g") == 0) | |
2749 | { | |
2750 | msg_action = MSG_DELIVER; | |
2751 | deliver_give_up = TRUE; | |
2752 | } | |
2753 | else if (Ustrcmp(argrest, "mad") == 0) | |
2754 | { | |
2755 | msg_action = MSG_MARK_ALL_DELIVERED; | |
2756 | } | |
2757 | else if (Ustrcmp(argrest, "md") == 0) | |
2758 | { | |
2759 | msg_action = MSG_MARK_DELIVERED; | |
2760 | one_msg_action = TRUE; | |
2761 | } | |
2762 | else if (Ustrcmp(argrest, "rm") == 0) msg_action = MSG_REMOVE; | |
0ef732d9 PH |
2763 | else if (Ustrcmp(argrest, "set") == 0) |
2764 | { | |
2765 | msg_action = MSG_LOAD; | |
2766 | one_msg_action = TRUE; | |
2767 | } | |
059ec3d9 PH |
2768 | else if (Ustrcmp(argrest, "t") == 0) msg_action = MSG_THAW; |
2769 | else if (Ustrcmp(argrest, "vb") == 0) | |
2770 | { | |
2771 | msg_action = MSG_SHOW_BODY; | |
2772 | one_msg_action = TRUE; | |
2773 | } | |
a96603a0 PH |
2774 | else if (Ustrcmp(argrest, "vc") == 0) |
2775 | { | |
2776 | msg_action = MSG_SHOW_COPY; | |
2777 | one_msg_action = TRUE; | |
2778 | } | |
059ec3d9 PH |
2779 | else if (Ustrcmp(argrest, "vh") == 0) |
2780 | { | |
2781 | msg_action = MSG_SHOW_HEADER; | |
2782 | one_msg_action = TRUE; | |
2783 | } | |
2784 | else if (Ustrcmp(argrest, "vl") == 0) | |
2785 | { | |
2786 | msg_action = MSG_SHOW_LOG; | |
2787 | one_msg_action = TRUE; | |
2788 | } | |
2789 | else { badarg = TRUE; break; } | |
2790 | ||
2791 | /* All the -Mxx options require at least one message id. */ | |
2792 | ||
2793 | msg_action_arg = i + 1; | |
2794 | if (msg_action_arg >= argc) | |
9af3c549 | 2795 | exim_fail("exim: no message ids given after %s option\n", arg); |
059ec3d9 PH |
2796 | |
2797 | /* Some require only message ids to follow */ | |
2798 | ||
2799 | if (!one_msg_action) | |
2800 | { | |
d7978c0f | 2801 | for (int j = msg_action_arg; j < argc; j++) if (!mac_ismsgid(argv[j])) |
9af3c549 | 2802 | exim_fail("exim: malformed message id %s after %s option\n", |
059ec3d9 | 2803 | argv[j], arg); |
059ec3d9 PH |
2804 | goto END_ARG; /* Remaining args are ids */ |
2805 | } | |
2806 | ||
2807 | /* Others require only one message id, possibly followed by addresses, | |
2808 | which will be handled as normal arguments. */ | |
2809 | ||
2810 | else | |
2811 | { | |
2812 | if (!mac_ismsgid(argv[msg_action_arg])) | |
9af3c549 | 2813 | exim_fail("exim: malformed message id %s after %s option\n", |
059ec3d9 | 2814 | argv[msg_action_arg], arg); |
059ec3d9 PH |
2815 | i++; |
2816 | } | |
2817 | break; | |
2818 | ||
2819 | ||
2820 | /* Some programs seem to call the -om option without the leading o; | |
2821 | for sendmail it askes for "me too". Exim always does this. */ | |
2822 | ||
2823 | case 'm': | |
2824 | if (*argrest != 0) badarg = TRUE; | |
2825 | break; | |
2826 | ||
2827 | ||
2828 | /* -N: don't do delivery - a debugging option that stops transports doing | |
2829 | their thing. It implies debugging at the D_v level. */ | |
2830 | ||
2831 | case 'N': | |
2832 | if (*argrest == 0) | |
2833 | { | |
8768d548 | 2834 | f.dont_deliver = TRUE; |
059ec3d9 PH |
2835 | debug_selector |= D_v; |
2836 | debug_file = stderr; | |
2837 | } | |
2838 | else badarg = TRUE; | |
2839 | break; | |
2840 | ||
2841 | ||
12f69989 PP |
2842 | /* -n: This means "don't alias" in sendmail, apparently. |
2843 | For normal invocations, it has no effect. | |
2844 | It may affect some other options. */ | |
059ec3d9 PH |
2845 | |
2846 | case 'n': | |
12f69989 | 2847 | flag_n = TRUE; |
059ec3d9 PH |
2848 | break; |
2849 | ||
2850 | /* -O: Just ignore it. In sendmail, apparently -O option=value means set | |
2851 | option to the specified value. This form uses long names. We need to handle | |
2852 | -O option=value and -Ooption=value. */ | |
2853 | ||
2854 | case 'O': | |
2855 | if (*argrest == 0) | |
2856 | { | |
2857 | if (++i >= argc) | |
9af3c549 | 2858 | exim_fail("exim: string expected after -O\n"); |
059ec3d9 PH |
2859 | } |
2860 | break; | |
2861 | ||
2862 | case 'o': | |
2863 | ||
2864 | /* -oA: Set an argument for the bi command (sendmail's "alternate alias | |
2865 | file" option). */ | |
2866 | ||
2867 | if (*argrest == 'A') | |
2868 | { | |
2869 | alias_arg = argrest + 1; | |
2870 | if (alias_arg[0] == 0) | |
2871 | { | |
2872 | if (i+1 < argc) alias_arg = argv[++i]; else | |
9af3c549 | 2873 | exim_fail("exim: string expected after -oA\n"); |
059ec3d9 PH |
2874 | } |
2875 | } | |
2876 | ||
2877 | /* -oB: Set a connection message max value for remote deliveries */ | |
2878 | ||
2879 | else if (*argrest == 'B') | |
2880 | { | |
2881 | uschar *p = argrest + 1; | |
2882 | if (p[0] == 0) | |
2883 | { | |
2884 | if (i+1 < argc && isdigit((argv[i+1][0]))) p = argv[++i]; else | |
2885 | { | |
2886 | connection_max_messages = 1; | |
2887 | p = NULL; | |
2888 | } | |
2889 | } | |
2890 | ||
2891 | if (p != NULL) | |
2892 | { | |
2893 | if (!isdigit(*p)) | |
9af3c549 | 2894 | exim_fail("exim: number expected after -oB\n"); |
059ec3d9 PH |
2895 | connection_max_messages = Uatoi(p); |
2896 | } | |
2897 | } | |
2898 | ||
2899 | /* -odb: background delivery */ | |
2900 | ||
2901 | else if (Ustrcmp(argrest, "db") == 0) | |
2902 | { | |
8768d548 | 2903 | f.synchronous_delivery = FALSE; |
059ec3d9 PH |
2904 | arg_queue_only = FALSE; |
2905 | queue_only_set = TRUE; | |
2906 | } | |
2907 | ||
2908 | /* -odf: foreground delivery (smail-compatible option); same effect as | |
2909 | -odi: interactive (synchronous) delivery (sendmail-compatible option) | |
2910 | */ | |
2911 | ||
2912 | else if (Ustrcmp(argrest, "df") == 0 || Ustrcmp(argrest, "di") == 0) | |
2913 | { | |
8768d548 | 2914 | f.synchronous_delivery = TRUE; |
059ec3d9 PH |
2915 | arg_queue_only = FALSE; |
2916 | queue_only_set = TRUE; | |
2917 | } | |
2918 | ||
2919 | /* -odq: queue only */ | |
2920 | ||
2921 | else if (Ustrcmp(argrest, "dq") == 0) | |
2922 | { | |
8768d548 | 2923 | f.synchronous_delivery = FALSE; |
059ec3d9 PH |
2924 | arg_queue_only = TRUE; |
2925 | queue_only_set = TRUE; | |
2926 | } | |
2927 | ||
2928 | /* -odqs: queue SMTP only - do local deliveries and remote routing, | |
2929 | but no remote delivery */ | |
2930 | ||
2931 | else if (Ustrcmp(argrest, "dqs") == 0) | |
2932 | { | |
8768d548 | 2933 | f.queue_smtp = TRUE; |
059ec3d9 PH |
2934 | arg_queue_only = FALSE; |
2935 | queue_only_set = TRUE; | |
2936 | } | |
2937 | ||
2938 | /* -oex: Sendmail error flags. As these are also accepted without the | |
2939 | leading -o prefix, for compatibility with vacation and other callers, | |
2940 | they are handled with -e above. */ | |
2941 | ||
2942 | /* -oi: Set flag so dot doesn't end non-SMTP input (same as -i) | |
2943 | -oitrue: Another sendmail syntax for the same */ | |
2944 | ||
2945 | else if (Ustrcmp(argrest, "i") == 0 || | |
2946 | Ustrcmp(argrest, "itrue") == 0) | |
8768d548 | 2947 | f.dot_ends = FALSE; |
059ec3d9 PH |
2948 | |
2949 | /* -oM*: Set various characteristics for an incoming message; actually | |
2950 | acted on for trusted callers only. */ | |
2951 | ||
2952 | else if (*argrest == 'M') | |
2953 | { | |
2954 | if (i+1 >= argc) | |
9af3c549 | 2955 | exim_fail("exim: data expected after -o%s\n", argrest); |
059ec3d9 PH |
2956 | |
2957 | /* -oMa: Set sender host address */ | |
2958 | ||
2959 | if (Ustrcmp(argrest, "Ma") == 0) sender_host_address = argv[++i]; | |
2960 | ||
2961 | /* -oMaa: Set authenticator name */ | |
2962 | ||
2963 | else if (Ustrcmp(argrest, "Maa") == 0) | |
2964 | sender_host_authenticated = argv[++i]; | |
2965 | ||
2966 | /* -oMas: setting authenticated sender */ | |
2967 | ||
2968 | else if (Ustrcmp(argrest, "Mas") == 0) authenticated_sender = argv[++i]; | |
2969 | ||
2970 | /* -oMai: setting authenticated id */ | |
2971 | ||
2972 | else if (Ustrcmp(argrest, "Mai") == 0) authenticated_id = argv[++i]; | |
2973 | ||
2974 | /* -oMi: Set incoming interface address */ | |
2975 | ||
2976 | else if (Ustrcmp(argrest, "Mi") == 0) interface_address = argv[++i]; | |
2977 | ||
d2af03f4 HS |
2978 | /* -oMm: Message reference */ |
2979 | ||
2980 | else if (Ustrcmp(argrest, "Mm") == 0) | |
2981 | { | |
2982 | if (!mac_ismsgid(argv[i+1])) | |
9af3c549 | 2983 | exim_fail("-oMm must be a valid message ID\n"); |
8768d548 | 2984 | if (!f.trusted_config) |
9af3c549 | 2985 | exim_fail("-oMm must be called by a trusted user/config\n"); |
d2af03f4 HS |
2986 | message_reference = argv[++i]; |
2987 | } | |
2988 | ||
059ec3d9 PH |
2989 | /* -oMr: Received protocol */ |
2990 | ||
65e061b7 HSHR |
2991 | else if (Ustrcmp(argrest, "Mr") == 0) |
2992 | ||
2993 | if (received_protocol) | |
9af3c549 JH |
2994 | exim_fail("received_protocol is set already\n"); |
2995 | else | |
2996 | received_protocol = argv[++i]; | |
059ec3d9 PH |
2997 | |
2998 | /* -oMs: Set sender host name */ | |
2999 | ||
3000 | else if (Ustrcmp(argrest, "Ms") == 0) sender_host_name = argv[++i]; | |
3001 | ||
3002 | /* -oMt: Set sender ident */ | |
3003 | ||
33d73e3b PH |
3004 | else if (Ustrcmp(argrest, "Mt") == 0) |
3005 | { | |
3006 | sender_ident_set = TRUE; | |
3007 | sender_ident = argv[++i]; | |
3008 | } | |
059ec3d9 PH |
3009 | |
3010 | /* Else a bad argument */ | |
3011 | ||
3012 | else | |
3013 | { | |
3014 | badarg = TRUE; | |
3015 | break; | |
3016 | } | |
3017 | } | |
3018 | ||
3019 | /* -om: Me-too flag for aliases. Exim always does this. Some programs | |
3020 | seem to call this as -m (undocumented), so that is also accepted (see | |
3021 | above). */ | |
3022 | ||
3023 | else if (Ustrcmp(argrest, "m") == 0) {} | |
3024 | ||
3025 | /* -oo: An ancient flag for old-style addresses which still seems to | |
3026 | crop up in some calls (see in SCO). */ | |
3027 | ||
3028 | else if (Ustrcmp(argrest, "o") == 0) {} | |
3029 | ||
3030 | /* -oP <name>: set pid file path for daemon */ | |
3031 | ||
3032 | else if (Ustrcmp(argrest, "P") == 0) | |
3033 | override_pid_file_path = argv[++i]; | |
3034 | ||
3035 | /* -or <n>: set timeout for non-SMTP acceptance | |
3036 | -os <n>: set timeout for SMTP acceptance */ | |
3037 | ||
3038 | else if (*argrest == 'r' || *argrest == 's') | |
3039 | { | |
3040 | int *tp = (*argrest == 'r')? | |
3041 | &arg_receive_timeout : &arg_smtp_receive_timeout; | |
3042 | if (argrest[1] == 0) | |
3043 | { | |
3044 | if (i+1 < argc) *tp= readconf_readtime(argv[++i], 0, FALSE); | |
3045 | } | |
3046 | else *tp = readconf_readtime(argrest + 1, 0, FALSE); | |
3047 | if (*tp < 0) | |
9af3c549 | 3048 | exim_fail("exim: bad time value %s: abandoned\n", argv[i]); |
059ec3d9 PH |
3049 | } |
3050 | ||
3051 | /* -oX <list>: Override local_interfaces and/or default daemon ports */ | |
3052 | ||
3053 | else if (Ustrcmp(argrest, "X") == 0) | |
3054 | override_local_interfaces = argv[++i]; | |
3055 | ||
3056 | /* Unknown -o argument */ | |
3057 | ||
3058 | else badarg = TRUE; | |
3059 | break; | |
3060 | ||
3061 | ||
3062 | /* -ps: force Perl startup; -pd force delayed Perl startup */ | |
3063 | ||
3064 | case 'p': | |
3065 | #ifdef EXIM_PERL | |
3066 | if (*argrest == 's' && argrest[1] == 0) | |
3067 | { | |
3068 | perl_start_option = 1; | |
3069 | break; | |
3070 | } | |
3071 | if (*argrest == 'd' && argrest[1] == 0) | |
3072 | { | |
3073 | perl_start_option = -1; | |
3074 | break; | |
3075 | } | |
3076 | #endif | |
3077 | ||
3078 | /* -panythingelse is taken as the Sendmail-compatible argument -prval:sval, | |
3079 | which sets the host protocol and host name */ | |
3080 | ||
3081 | if (*argrest == 0) | |
5bfe3b35 JH |
3082 | if (i+1 < argc) |
3083 | argrest = argv[++i]; | |
3084 | else | |
059ec3d9 | 3085 | { badarg = TRUE; break; } |
059ec3d9 PH |
3086 | |
3087 | if (*argrest != 0) | |
3088 | { | |
65e061b7 HSHR |
3089 | uschar *hn; |
3090 | ||
3091 | if (received_protocol) | |
9af3c549 | 3092 | exim_fail("received_protocol is set already\n"); |
65e061b7 HSHR |
3093 | |
3094 | hn = Ustrchr(argrest, ':'); | |
059ec3d9 | 3095 | if (hn == NULL) |
059ec3d9 | 3096 | received_protocol = argrest; |
059ec3d9 PH |
3097 | else |
3098 | { | |
90341c71 JH |
3099 | int old_pool = store_pool; |
3100 | store_pool = POOL_PERM; | |
059ec3d9 | 3101 | received_protocol = string_copyn(argrest, hn - argrest); |
90341c71 | 3102 | store_pool = old_pool; |
059ec3d9 PH |
3103 | sender_host_name = hn + 1; |
3104 | } | |
3105 | } | |
3106 | break; | |
3107 | ||
3108 | ||
3109 | case 'q': | |
3110 | receiving_message = FALSE; | |
3cc66b45 | 3111 | if (queue_interval >= 0) |
9af3c549 | 3112 | exim_fail("exim: -q specified more than once\n"); |
059ec3d9 PH |
3113 | |
3114 | /* -qq...: Do queue runs in a 2-stage manner */ | |
3115 | ||
3116 | if (*argrest == 'q') | |
3117 | { | |
8768d548 | 3118 | f.queue_2stage = TRUE; |
059ec3d9 PH |
3119 | argrest++; |
3120 | } | |
3121 | ||
3122 | /* -qi...: Do only first (initial) deliveries */ | |
3123 | ||
3124 | if (*argrest == 'i') | |
3125 | { | |
8768d548 | 3126 | f.queue_run_first_delivery = TRUE; |
059ec3d9 PH |
3127 | argrest++; |
3128 | } | |
3129 | ||
3130 | /* -qf...: Run the queue, forcing deliveries | |
3131 | -qff..: Ditto, forcing thawing as well */ | |
3132 | ||
3133 | if (*argrest == 'f') | |
3134 | { | |
8768d548 | 3135 | f.queue_run_force = TRUE; |
55e70e76 | 3136 | if (*++argrest == 'f') |
059ec3d9 | 3137 | { |
8768d548 | 3138 | f.deliver_force_thaw = TRUE; |
059ec3d9 PH |
3139 | argrest++; |
3140 | } | |
3141 | } | |
3142 | ||
3143 | /* -q[f][f]l...: Run the queue only on local deliveries */ | |
3144 | ||
3145 | if (*argrest == 'l') | |
3146 | { | |
8768d548 | 3147 | f.queue_run_local = TRUE; |
059ec3d9 PH |
3148 | argrest++; |
3149 | } | |
3150 | ||
55e70e76 | 3151 | /* -q[f][f][l][G<name>]... Work on the named queue */ |
28b3821f JH |
3152 | |
3153 | if (*argrest == 'G') | |
3154 | { | |
fa665e0b JH |
3155 | int i; |
3156 | for (argrest++, i = 0; argrest[i] && argrest[i] != '/'; ) i++; | |
3157 | queue_name = string_copyn(argrest, i); | |
3158 | argrest += i; | |
3159 | if (*argrest == '/') argrest++; | |
28b3821f JH |
3160 | } |
3161 | ||
3162 | /* -q[f][f][l][G<name>]: Run the queue, optionally forced, optionally local | |
3163 | only, optionally named, optionally starting from a given message id. */ | |
059ec3d9 PH |
3164 | |
3165 | if (*argrest == 0 && | |
3166 | (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1]))) | |
3167 | { | |
3168 | queue_interval = 0; | |
3169 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3170 | start_queue_run_id = argv[++i]; | |
3171 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3172 | stop_queue_run_id = argv[++i]; | |
3173 | } | |
3174 | ||
fa665e0b JH |
3175 | /* -q[f][f][l][G<name>/]<n>: Run the queue at regular intervals, optionally |
3176 | forced, optionally local only, optionally named. */ | |
059ec3d9 | 3177 | |
55e70e76 JH |
3178 | else if ((queue_interval = readconf_readtime(*argrest ? argrest : argv[++i], |
3179 | 0, FALSE)) <= 0) | |
9af3c549 | 3180 | exim_fail("exim: bad time value %s: abandoned\n", argv[i]); |
059ec3d9 PH |
3181 | break; |
3182 | ||
3183 | ||
3184 | case 'R': /* Synonymous with -qR... */ | |
3185 | receiving_message = FALSE; | |
3186 | ||
3187 | /* -Rf: As -R (below) but force all deliveries, | |
3188 | -Rff: Ditto, but also thaw all frozen messages, | |
3189 | -Rr: String is regex | |
3190 | -Rrf: Regex and force | |
3191 | -Rrff: Regex and force and thaw | |
3192 | ||
3193 | in all cases provided there are no further characters in this | |
3194 | argument. */ | |
3195 | ||
3196 | if (*argrest != 0) | |
d7978c0f | 3197 | for (int i = 0; i < nelem(rsopts); i++) |
059ec3d9 PH |
3198 | if (Ustrcmp(argrest, rsopts[i]) == 0) |
3199 | { | |
8768d548 JH |
3200 | if (i != 2) f.queue_run_force = TRUE; |
3201 | if (i >= 2) f.deliver_selectstring_regex = TRUE; | |
3202 | if (i == 1 || i == 4) f.deliver_force_thaw = TRUE; | |
059ec3d9 PH |
3203 | argrest += Ustrlen(rsopts[i]); |
3204 | } | |
059ec3d9 PH |
3205 | |
3206 | /* -R: Set string to match in addresses for forced queue run to | |
3207 | pick out particular messages. */ | |
3208 | ||
55e70e76 JH |
3209 | if (*argrest) |
3210 | deliver_selectstring = argrest; | |
3211 | else if (i+1 < argc) | |
3212 | deliver_selectstring = argv[++i]; | |
3213 | else | |
9af3c549 | 3214 | exim_fail("exim: string expected after -R\n"); |
059ec3d9 PH |
3215 | break; |
3216 | ||
3217 | ||
3218 | /* -r: an obsolete synonym for -f (see above) */ | |
3219 | ||
3220 | ||
3221 | /* -S: Like -R but works on sender. */ | |
3222 | ||
3223 | case 'S': /* Synonymous with -qS... */ | |
3224 | receiving_message = FALSE; | |
3225 | ||
3226 | /* -Sf: As -S (below) but force all deliveries, | |
3227 | -Sff: Ditto, but also thaw all frozen messages, | |
3228 | -Sr: String is regex | |
3229 | -Srf: Regex and force | |
3230 | -Srff: Regex and force and thaw | |
3231 | ||
3232 | in all cases provided there are no further characters in this | |
3233 | argument. */ | |
3234 | ||
55e70e76 | 3235 | if (*argrest) |
d7978c0f | 3236 | for (int i = 0; i < nelem(rsopts); i++) |
059ec3d9 PH |
3237 | if (Ustrcmp(argrest, rsopts[i]) == 0) |
3238 | { | |
8768d548 JH |
3239 | if (i != 2) f.queue_run_force = TRUE; |
3240 | if (i >= 2) f.deliver_selectstring_sender_regex = TRUE; | |
3241 | if (i == 1 || i == 4) f.deliver_force_thaw = TRUE; | |
059ec3d9 PH |
3242 | argrest += Ustrlen(rsopts[i]); |
3243 | } | |
059ec3d9 PH |
3244 | |
3245 | /* -S: Set string to match in addresses for forced queue run to | |
3246 | pick out particular messages. */ | |
3247 | ||
55e70e76 JH |
3248 | if (*argrest) |
3249 | deliver_selectstring_sender = argrest; | |
3250 | else if (i+1 < argc) | |
3251 | deliver_selectstring_sender = argv[++i]; | |
3252 | else | |
9af3c549 | 3253 | exim_fail("exim: string expected after -S\n"); |
059ec3d9 PH |
3254 | break; |
3255 | ||
3256 | /* -Tqt is an option that is exclusively for use by the testing suite. | |
3257 | It is not recognized in other circumstances. It allows for the setting up | |
3258 | of explicit "queue times" so that various warning/retry things can be | |
3259 | tested. Otherwise variability of clock ticks etc. cause problems. */ | |
3260 | ||
3261 | case 'T': | |
8768d548 | 3262 | if (f.running_in_test_harness && Ustrcmp(argrest, "qt") == 0) |
059ec3d9 PH |
3263 | fudged_queue_times = argv[++i]; |
3264 | else badarg = TRUE; | |
3265 | break; | |
3266 | ||
3267 | ||
3268 | /* -t: Set flag to extract recipients from body of message. */ | |
3269 | ||
3270 | case 't': | |
3271 | if (*argrest == 0) extract_recipients = TRUE; | |
3272 | ||
3273 | /* -ti: Set flag to extract recipients from body of message, and also | |
3274 | specify that dot does not end the message. */ | |
3275 | ||
3276 | else if (Ustrcmp(argrest, "i") == 0) | |
3277 | { | |
3278 | extract_recipients = TRUE; | |
8768d548 | 3279 | f.dot_ends = FALSE; |
059ec3d9 PH |
3280 | } |
3281 | ||
3282 | /* -tls-on-connect: don't wait for STARTTLS (for old clients) */ | |
3283 | ||
3284 | #ifdef SUPPORT_TLS | |
817d9f57 | 3285 | else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE; |
059ec3d9 PH |
3286 | #endif |
3287 | ||
3288 | else badarg = TRUE; | |
3289 | break; | |
3290 | ||
3291 | ||
3292 | /* -U: This means "initial user submission" in sendmail, apparently. The | |
3293 | doc claims that in future sendmail may refuse syntactically invalid | |
3294 | messages instead of fixing them. For the moment, we just ignore it. */ | |
3295 | ||
3296 | case 'U': | |
3297 | break; | |
3298 | ||
3299 | ||
3300 | /* -v: verify things - this is a very low-level debugging */ | |
3301 | ||
3302 | case 'v': | |
3303 | if (*argrest == 0) | |
3304 | { | |
3305 | debug_selector |= D_v; | |
3306 | debug_file = stderr; | |
3307 | } | |
3308 | else badarg = TRUE; | |
3309 | break; | |
3310 | ||
3311 | ||
3312 | /* -x: AIX uses this to indicate some fancy 8-bit character stuff: | |
3313 | ||
3314 | The -x flag tells the sendmail command that mail from a local | |
3315 | mail program has National Language Support (NLS) extended characters | |
3316 | in the body of the mail item. The sendmail command can send mail with | |
3317 | extended NLS characters across networks that normally corrupts these | |
3318 | 8-bit characters. | |
3319 | ||
3320 | As Exim is 8-bit clean, it just ignores this flag. */ | |
3321 | ||
3322 | case 'x': | |
3323 | if (*argrest != 0) badarg = TRUE; | |
3324 | break; | |
3325 | ||
a3fb9793 PP |
3326 | /* -X: in sendmail: takes one parameter, logfile, and sends debugging |
3327 | logs to that file. We swallow the parameter and otherwise ignore it. */ | |
3328 | ||
3329 | case 'X': | |
3330 | if (*argrest == '\0') | |
a3fb9793 | 3331 | if (++i >= argc) |
9af3c549 | 3332 | exim_fail("exim: string expected after -X\n"); |
0ad2e0fc JH |
3333 | break; |
3334 | ||
3335 | case 'z': | |
3336 | if (*argrest == '\0') | |
9af3c549 JH |
3337 | if (++i < argc) |
3338 | log_oneline = argv[i]; | |
3339 | else | |
3340 | exim_fail("exim: file name expected after %s\n", argv[i-1]); | |
a3fb9793 PP |
3341 | break; |
3342 | ||
059ec3d9 PH |
3343 | /* All other initial characters are errors */ |
3344 | ||
3345 | default: | |
3346 | badarg = TRUE; | |
3347 | break; | |
3348 | } /* End of high-level switch statement */ | |
3349 | ||
3350 | /* Failed to recognize the option, or syntax error */ | |
3351 | ||
3352 | if (badarg) | |
9af3c549 | 3353 | exim_fail("exim abandoned: unknown, malformed, or incomplete " |
059ec3d9 | 3354 | "option %s\n", arg); |
059ec3d9 PH |
3355 | } |
3356 | ||
3357 | ||
3cc66b45 PH |
3358 | /* If -R or -S have been specified without -q, assume a single queue run. */ |
3359 | ||
55e70e76 JH |
3360 | if ( (deliver_selectstring || deliver_selectstring_sender) |
3361 | && queue_interval < 0) | |
3362 | queue_interval = 0; | |
3cc66b45 PH |
3363 | |
3364 | ||
059ec3d9 | 3365 | END_ARG: |
81ea09ca NM |
3366 | /* If usage_wanted is set we call the usage function - which never returns */ |
3367 | if (usage_wanted) exim_usage(called_as); | |
3368 | ||
3369 | /* Arguments have been processed. Check for incompatibilities. */ | |
059ec3d9 PH |
3370 | if (( |
3371 | (smtp_input || extract_recipients || recipients_arg < argc) && | |
8768d548 | 3372 | (f.daemon_listen || queue_interval >= 0 || bi_option || |
059ec3d9 | 3373 | test_retry_arg >= 0 || test_rewrite_arg >= 0 || |
f05da2e8 | 3374 | filter_test != FTEST_NONE || (msg_action_arg > 0 && !one_msg_action)) |
059ec3d9 PH |
3375 | ) || |
3376 | ( | |
3377 | msg_action_arg > 0 && | |
8768d548 | 3378 | (f.daemon_listen || queue_interval > 0 || list_options || |
0ef732d9 PH |
3379 | (checking && msg_action != MSG_LOAD) || |
3380 | bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0) | |
059ec3d9 PH |
3381 | ) || |
3382 | ( | |
8768d548 | 3383 | (f.daemon_listen || queue_interval > 0) && |
059ec3d9 | 3384 | (sender_address != NULL || list_options || list_queue || checking || |
0ef732d9 | 3385 | bi_option) |
059ec3d9 PH |
3386 | ) || |
3387 | ( | |
8768d548 | 3388 | f.daemon_listen && queue_interval == 0 |
059ec3d9 PH |
3389 | ) || |
3390 | ( | |
8768d548 | 3391 | f.inetd_wait_mode && queue_interval >= 0 |
9ee44efb PP |
3392 | ) || |
3393 | ( | |
059ec3d9 PH |
3394 | list_options && |
3395 | (checking || smtp_input || extract_recipients || | |
f05da2e8 | 3396 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3397 | ) || |
3398 | ( | |
3399 | verify_address_mode && | |
8768d548 | 3400 | (f.address_test_mode || smtp_input || extract_recipients || |
f05da2e8 | 3401 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3402 | ) || |
3403 | ( | |
8768d548 | 3404 | f.address_test_mode && (smtp_input || extract_recipients || |
f05da2e8 | 3405 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3406 | ) || |
3407 | ( | |
f05da2e8 | 3408 | smtp_input && (sender_address != NULL || filter_test != FTEST_NONE || |
059ec3d9 PH |
3409 | extract_recipients) |
3410 | ) || | |
3411 | ( | |
3412 | deliver_selectstring != NULL && queue_interval < 0 | |
328895cc PH |
3413 | ) || |
3414 | ( | |
3415 | msg_action == MSG_LOAD && | |
3416 | (!expansion_test || expansion_test_message != NULL) | |
059ec3d9 PH |
3417 | ) |
3418 | ) | |
9af3c549 | 3419 | exim_fail("exim: incompatible command-line options or arguments\n"); |
059ec3d9 PH |
3420 | |
3421 | /* If debugging is set up, set the file and the file descriptor to pass on to | |
3422 | child processes. It should, of course, be 2 for stderr. Also, force the daemon | |
3423 | to run in the foreground. */ | |
3424 | ||
3425 | if (debug_selector != 0) | |
3426 | { | |
3427 | debug_file = stderr; | |
3428 | debug_fd = fileno(debug_file); | |
8768d548 JH |
3429 | f.background_daemon = FALSE; |
3430 | if (f.running_in_test_harness) millisleep(100); /* lets caller finish */ | |
059ec3d9 PH |
3431 | if (debug_selector != D_v) /* -v only doesn't show this */ |
3432 | { | |
3433 | debug_printf("Exim version %s uid=%ld gid=%ld pid=%d D=%x\n", | |
3434 | version_string, (long int)real_uid, (long int)real_gid, (int)getpid(), | |
3435 | debug_selector); | |
6545de78 PP |
3436 | if (!version_printed) |
3437 | show_whats_supported(stderr); | |
059ec3d9 PH |
3438 | } |
3439 | } | |
3440 | ||
3441 | /* When started with root privilege, ensure that the limits on the number of | |
3442 | open files and the number of processes (where that is accessible) are | |
3443 | sufficiently large, or are unset, in case Exim has been called from an | |
3444 | environment where the limits are screwed down. Not all OS have the ability to | |
3445 | change some of these limits. */ | |
3446 | ||
3447 | if (unprivileged) | |
3448 | { | |
3449 | DEBUG(D_any) debug_print_ids(US"Exim has no root privilege:"); | |
3450 | } | |
3451 | else | |
3452 | { | |
3453 | struct rlimit rlp; | |
3454 | ||
3455 | #ifdef RLIMIT_NOFILE | |
3456 | if (getrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3457 | { | |
3458 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NOFILE) failed: %s", | |
3459 | strerror(errno)); | |
3460 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3461 | } | |
eb2c0248 PH |
3462 | |
3463 | /* I originally chose 1000 as a nice big number that was unlikely to | |
a494b1e1 PH |
3464 | be exceeded. It turns out that some older OS have a fixed upper limit of |
3465 | 256. */ | |
eb2c0248 | 3466 | |
059ec3d9 PH |
3467 | if (rlp.rlim_cur < 1000) |
3468 | { | |
3469 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3470 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
eb2c0248 | 3471 | { |
a494b1e1 PH |
3472 | rlp.rlim_cur = rlp.rlim_max = 256; |
3473 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3474 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NOFILE) failed: %s", | |
3475 | strerror(errno)); | |
eb2c0248 | 3476 | } |
059ec3d9 PH |
3477 | } |
3478 | #endif | |
3479 | ||
3480 | #ifdef RLIMIT_NPROC | |
3481 | if (getrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3482 | { | |
3483 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NPROC) failed: %s", | |
3484 | strerror(errno)); | |
3485 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3486 | } | |
3487 | ||
3488 | #ifdef RLIM_INFINITY | |
3489 | if (rlp.rlim_cur != RLIM_INFINITY && rlp.rlim_cur < 1000) | |
3490 | { | |
3491 | rlp.rlim_cur = rlp.rlim_max = RLIM_INFINITY; | |
3492 | #else | |
3493 | if (rlp.rlim_cur < 1000) | |
3494 | { | |
3495 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3496 | #endif | |
3497 | if (setrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3498 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NPROC) failed: %s", | |
3499 | strerror(errno)); | |
3500 | } | |
3501 | #endif | |
3502 | } | |
3503 | ||
3504 | /* Exim is normally entered as root (but some special configurations are | |
3505 | possible that don't do this). However, it always spins off sub-processes that | |
3506 | set their uid and gid as required for local delivery. We don't want to pass on | |
3507 | any extra groups that root may belong to, so we want to get rid of them all at | |
3508 | this point. | |
3509 | ||
3510 | We need to obey setgroups() at this stage, before possibly giving up root | |
3511 | privilege for a changed configuration file, but later on we might need to | |
3512 | check on the additional groups for the admin user privilege - can't do that | |
3513 | till after reading the config, which might specify the exim gid. Therefore, | |
3514 | save the group list here first. */ | |
3515 | ||
157d73b5 | 3516 | if ((group_count = getgroups(nelem(group_list), group_list)) < 0) |
9af3c549 | 3517 | exim_fail("exim: getgroups() failed: %s\n", strerror(errno)); |
059ec3d9 PH |
3518 | |
3519 | /* There is a fundamental difference in some BSD systems in the matter of | |
3520 | groups. FreeBSD and BSDI are known to be different; NetBSD and OpenBSD are | |
3521 | known not to be different. On the "different" systems there is a single group | |
3522 | list, and the first entry in it is the current group. On all other versions of | |
3523 | Unix there is a supplementary group list, which is in *addition* to the current | |
3524 | group. Consequently, to get rid of all extraneous groups on a "standard" system | |
3525 | you pass over 0 groups to setgroups(), while on a "different" system you pass | |
3526 | over a single group - the current group, which is always the first group in the | |
3527 | list. Calling setgroups() with zero groups on a "different" system results in | |
3528 | an error return. The following code should cope with both types of system. | |
3529 | ||
3b7ac02c JH |
3530 | Unfortunately, recent MacOS, which should be a FreeBSD, "helpfully" succeeds |
3531 | the "setgroups() with zero groups" - and changes the egid. | |
3532 | Thanks to that we had to stash the original_egid above, for use below | |
3533 | in the call to exim_setugid(). | |
3534 | ||
059ec3d9 PH |
3535 | However, if this process isn't running as root, setgroups() can't be used |
3536 | since you have to be root to run it, even if throwing away groups. Not being | |
3537 | root here happens only in some unusual configurations. We just ignore the | |
3538 | error. */ | |
3539 | ||
9af3c549 JH |
3540 | if (setgroups(0, NULL) != 0 && setgroups(1, group_list) != 0 && !unprivileged) |
3541 | exim_fail("exim: setgroups() failed: %s\n", strerror(errno)); | |
059ec3d9 PH |
3542 | |
3543 | /* If the configuration file name has been altered by an argument on the | |
3544 | command line (either a new file name or a macro definition) and the caller is | |
cd25e41d DW |
3545 | not root, or if this is a filter testing run, remove any setuid privilege the |
3546 | program has and run as the underlying user. | |
059ec3d9 | 3547 | |
cd25e41d DW |
3548 | The exim user is locked out of this, which severely restricts the use of -C |
3549 | for some purposes. | |
059ec3d9 PH |
3550 | |
3551 | Otherwise, set the real ids to the effective values (should be root unless run | |
3552 | from inetd, which it can either be root or the exim uid, if one is configured). | |
3553 | ||
3554 | There is a private mechanism for bypassing some of this, in order to make it | |
3555 | possible to test lots of configurations automatically, without having either to | |
3556 | recompile each time, or to patch in an actual configuration file name and other | |
3557 | values (such as the path name). If running in the test harness, pretend that | |
3558 | configuration file changes and macro definitions haven't happened. */ | |
3559 | ||
3560 | if (( /* EITHER */ | |
8768d548 | 3561 | (!f.trusted_config || /* Config changed, or */ |
a4034eb8 | 3562 | !macros_trusted(opt_D_used)) && /* impermissible macros and */ |
059ec3d9 | 3563 | real_uid != root_uid && /* Not root, and */ |
8768d548 | 3564 | !f.running_in_test_harness /* Not fudged */ |
059ec3d9 PH |
3565 | ) || /* OR */ |
3566 | expansion_test /* expansion testing */ | |
3567 | || /* OR */ | |
f05da2e8 | 3568 | filter_test != FTEST_NONE) /* Filter testing */ |
059ec3d9 PH |
3569 | { |
3570 | setgroups(group_count, group_list); | |
3571 | exim_setugid(real_uid, real_gid, FALSE, | |
3572 | US"-C, -D, -be or -bf forces real uid"); | |
3573 | removed_privilege = TRUE; | |
3574 | ||
3575 | /* In the normal case when Exim is called like this, stderr is available | |
3576 | and should be used for any logging information because attempts to write | |
3577 | to the log will usually fail. To arrange this, we unset really_exim. However, | |
3578 | if no stderr is available there is no point - we might as well have a go | |
b7487bce | 3579 | at the log (if it fails, syslog will be written). |
059ec3d9 | 3580 | |
b7487bce PP |
3581 | Note that if the invoker is Exim, the logs remain available. Messing with |
3582 | this causes unlogged successful deliveries. */ | |
3583 | ||
9af3c549 | 3584 | if (log_stderr && real_uid != exim_uid) |
8768d548 | 3585 | f.really_exim = FALSE; |
059ec3d9 PH |
3586 | } |
3587 | ||
3588 | /* Privilege is to be retained for the moment. It may be dropped later, | |
3589 | depending on the job that this Exim process has been asked to do. For now, set | |
3590 | the real uid to the effective so that subsequent re-execs of Exim are done by a | |
3591 | privileged user. */ | |
3592 | ||
9af3c549 | 3593 | else |
3b7ac02c | 3594 | exim_setugid(geteuid(), original_egid, FALSE, US"forcing real = effective"); |
059ec3d9 | 3595 | |
f05da2e8 | 3596 | /* If testing a filter, open the file(s) now, before wasting time doing other |
059ec3d9 PH |
3597 | setups and reading the message. */ |
3598 | ||
9af3c549 JH |
3599 | if (filter_test & FTEST_SYSTEM) |
3600 | if ((filter_sfd = Uopen(filter_test_sfile, O_RDONLY, 0)) < 0) | |
3601 | exim_fail("exim: failed to open %s: %s\n", filter_test_sfile, | |
f05da2e8 | 3602 | strerror(errno)); |
f05da2e8 | 3603 | |
9af3c549 JH |
3604 | if (filter_test & FTEST_USER) |
3605 | if ((filter_ufd = Uopen(filter_test_ufile, O_RDONLY, 0)) < 0) | |
3606 | exim_fail("exim: failed to open %s: %s\n", filter_test_ufile, | |
059ec3d9 | 3607 | strerror(errno)); |
059ec3d9 | 3608 | |
8829633f PP |
3609 | /* Initialise lookup_list |
3610 | If debugging, already called above via version reporting. | |
3611 | In either case, we initialise the list of available lookups while running | |
3612 | as root. All dynamically modules are loaded from a directory which is | |
3613 | hard-coded into the binary and is code which, if not a module, would be | |
3614 | part of Exim already. Ability to modify the content of the directory | |
3615 | is equivalent to the ability to modify a setuid binary! | |
3616 | ||
3617 | This needs to happen before we read the main configuration. */ | |
3618 | init_lookup_list(); | |
3619 | ||
8c5d388a | 3620 | #ifdef SUPPORT_I18N |
8768d548 | 3621 | if (f.running_in_test_harness) smtputf8_advertise_hosts = NULL; |
9d4319df JH |
3622 | #endif |
3623 | ||
059ec3d9 PH |
3624 | /* Read the main runtime configuration data; this gives up if there |
3625 | is a failure. It leaves the configuration file open so that the subsequent | |
3de973a2 | 3626 | configuration data for delivery can be read if needed. |
059ec3d9 | 3627 | |
aded2255 | 3628 | NOTE: immediately after opening the configuration file we change the working |
3de973a2 HSHR |
3629 | directory to "/"! Later we change to $spool_directory. We do it there, because |
3630 | during readconf_main() some expansion takes place already. */ | |
bc3c7bb7 | 3631 | |
cd328be9 JH |
3632 | /* Store the initial cwd before we change directories. Can be NULL if the |
3633 | dir has already been unlinked. */ | |
3634 | initial_cwd = os_getcwd(NULL, 0); | |
3615fa9a | 3635 | |
34e86e20 HSHR |
3636 | /* checking: |
3637 | -be[m] expansion test - | |
3638 | -b[fF] filter test new | |
3639 | -bh[c] host test - | |
3640 | -bmalware malware_test_file new | |
3641 | -brt retry test new | |
3642 | -brw rewrite test new | |
3643 | -bt address test - | |
3644 | -bv[s] address verify - | |
3645 | list_options: | |
3646 | -bP <option> (except -bP config, which sets list_config) | |
3647 | ||
3648 | If any of these options is set, we suppress warnings about configuration | |
3649 | issues (currently about tls_advertise_hosts and keep_environment not being | |
3650 | defined) */ | |
3651 | ||
3652 | readconf_main(checking || list_options); | |
059ec3d9 | 3653 | |
32b8ce41 | 3654 | |
3de973a2 HSHR |
3655 | /* Now in directory "/" */ |
3656 | ||
bc3c7bb7 HSHR |
3657 | if (cleanup_environment() == FALSE) |
3658 | log_write(0, LOG_PANIC_DIE, "Can't cleanup environment"); | |
3659 | ||
3660 | ||
a3fb9793 PP |
3661 | /* If an action on specific messages is requested, or if a daemon or queue |
3662 | runner is being started, we need to know if Exim was called by an admin user. | |
3663 | This is the case if the real user is root or exim, or if the real group is | |
3664 | exim, or if one of the supplementary groups is exim or a group listed in | |
3665 | admin_groups. We don't fail all message actions immediately if not admin_user, | |
3666 | since some actions can be performed by non-admin users. Instead, set admin_user | |
3667 | for later interrogation. */ | |
3668 | ||
3669 | if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid) | |
8768d548 | 3670 | f.admin_user = TRUE; |
a3fb9793 | 3671 | else |
d7978c0f | 3672 | for (int i = 0; i < group_count && !f.admin_user; i++) |
32b8ce41 | 3673 | if (group_list[i] == exim_gid) |
8768d548 | 3674 | f.admin_user = TRUE; |
32b8ce41 | 3675 | else if (admin_groups) |
d7978c0f | 3676 | for (int j = 1; j <= (int)admin_groups[0] && !f.admin_user; j++) |
a3fb9793 | 3677 | if (admin_groups[j] == group_list[i]) |
8768d548 | 3678 | f.admin_user = TRUE; |
a3fb9793 PP |
3679 | |
3680 | /* Another group of privileged users are the trusted users. These are root, | |
3681 | exim, and any caller matching trusted_users or trusted_groups. Trusted callers | |
3682 | are permitted to specify sender_addresses with -f on the command line, and | |
3683 | other message parameters as well. */ | |
3684 | ||
3685 | if (real_uid == root_uid || real_uid == exim_uid) | |
8768d548 | 3686 | f.trusted_caller = TRUE; |
a3fb9793 PP |
3687 | else |
3688 | { | |
32b8ce41 | 3689 | if (trusted_users) |
d7978c0f | 3690 | for (int i = 1; i <= (int)trusted_users[0] && !f.trusted_caller; i++) |
a3fb9793 | 3691 | if (trusted_users[i] == real_uid) |
8768d548 | 3692 | f.trusted_caller = TRUE; |
a3fb9793 | 3693 | |
32b8ce41 | 3694 | if (trusted_groups) |
d7978c0f | 3695 | for (int i = 1; i <= (int)trusted_groups[0] && !f.trusted_caller; i++) |
a3fb9793 | 3696 | if (trusted_groups[i] == real_gid) |
8768d548 | 3697 | f.trusted_caller = TRUE; |
d7978c0f | 3698 | else for (int j = 0; j < group_count && !f.trusted_caller; j++) |
a3fb9793 | 3699 | if (trusted_groups[i] == group_list[j]) |
8768d548 | 3700 | f.trusted_caller = TRUE; |
a3fb9793 PP |
3701 | } |
3702 | ||
f33875c3 | 3703 | /* At this point, we know if the user is privileged and some command-line |
b4a1e238 | 3704 | options become possibly impermissible, depending upon the configuration file. */ |
f33875c3 | 3705 | |
9af3c549 JH |
3706 | if (checking && commandline_checks_require_admin && !f.admin_user) |
3707 | exim_fail("exim: those command-line flags are set to require admin\n"); | |
f33875c3 | 3708 | |
059ec3d9 PH |
3709 | /* Handle the decoding of logging options. */ |
3710 | ||
6c6d6e48 | 3711 | decode_bits(log_selector, log_selector_size, log_notall, |
ed7f7860 | 3712 | log_selector_string, log_options, log_options_count, US"log", 0); |
059ec3d9 PH |
3713 | |
3714 | DEBUG(D_any) | |
3715 | { | |
3716 | debug_printf("configuration file is %s\n", config_main_filename); | |
6c6d6e48 | 3717 | debug_printf("log selectors ="); |
d7978c0f | 3718 | for (int i = 0; i < log_selector_size; i++) |
6c6d6e48 TF |
3719 | debug_printf(" %08x", log_selector[i]); |
3720 | debug_printf("\n"); | |
059ec3d9 PH |
3721 | } |
3722 | ||
3723 | /* If domain literals are not allowed, check the sender address that was | |
3724 | supplied with -f. Ditto for a stripped trailing dot. */ | |
3725 | ||
9af3c549 | 3726 | if (sender_address) |
059ec3d9 PH |
3727 | { |
3728 | if (sender_address[sender_address_domain] == '[' && !allow_domain_literals) | |
9af3c549 | 3729 | exim_fail("exim: bad -f address \"%s\": domain literals not " |
059ec3d9 | 3730 | "allowed\n", sender_address); |
059ec3d9 | 3731 | if (f_end_dot && !strip_trailing_dot) |
9af3c549 | 3732 | exim_fail("exim: bad -f address \"%s.\": domain is malformed " |
059ec3d9 | 3733 | "(trailing dot not allowed)\n", sender_address); |
059ec3d9 PH |
3734 | } |
3735 | ||
a3fb9793 PP |
3736 | /* See if an admin user overrode our logging. */ |
3737 | ||
9af3c549 | 3738 | if (cmdline_syslog_name) |
8768d548 | 3739 | if (f.admin_user) |
a3fb9793 PP |
3740 | { |
3741 | syslog_processname = cmdline_syslog_name; | |
3742 | log_file_path = string_copy(CUS"syslog"); | |
3743 | } | |
3744 | else | |
a3fb9793 | 3745 | /* not a panic, non-privileged users should not be able to spam paniclog */ |
9af3c549 | 3746 | exim_fail( |
a3fb9793 | 3747 | "exim: you lack sufficient privilege to specify syslog process name\n"); |
a3fb9793 | 3748 | |
059ec3d9 PH |
3749 | /* Paranoia check of maximum lengths of certain strings. There is a check |
3750 | on the length of the log file path in log.c, which will come into effect | |
3751 | if there are any calls to write the log earlier than this. However, if we | |
3752 | get this far but the string is very long, it is better to stop now than to | |
3753 | carry on and (e.g.) receive a message and then have to collapse. The call to | |
3754 | log_write() from here will cause the ultimate panic collapse if the complete | |
3755 | file name exceeds the buffer length. */ | |
3756 | ||
3757 | if (Ustrlen(log_file_path) > 200) | |
3758 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3759 | "log_file_path is longer than 200 chars: aborting"); | |
3760 | ||
3761 | if (Ustrlen(pid_file_path) > 200) | |
3762 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3763 | "pid_file_path is longer than 200 chars: aborting"); | |
3764 | ||
3765 | if (Ustrlen(spool_directory) > 200) | |
3766 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3767 | "spool_directory is longer than 200 chars: aborting"); | |
3768 | ||
3769 | /* Length check on the process name given to syslog for its TAG field, | |
3770 | which is only permitted to be 32 characters or less. See RFC 3164. */ | |
3771 | ||
3772 | if (Ustrlen(syslog_processname) > 32) | |
3773 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3774 | "syslog_processname is longer than 32 chars: aborting"); | |
3775 | ||
0ad2e0fc | 3776 | if (log_oneline) |
8768d548 | 3777 | if (f.admin_user) |
0ad2e0fc JH |
3778 | { |
3779 | log_write(0, LOG_MAIN, "%s", log_oneline); | |
3780 | return EXIT_SUCCESS; | |
3781 | } | |
3782 | else | |
3783 | return EXIT_FAILURE; | |
0ad2e0fc | 3784 | |
059ec3d9 PH |
3785 | /* In some operating systems, the environment variable TMPDIR controls where |
3786 | temporary files are created; Exim doesn't use these (apart from when delivering | |
3787 | to MBX mailboxes), but called libraries such as DBM libraries may require them. | |
3788 | If TMPDIR is found in the environment, reset it to the value defined in the | |
8f3bfb82 HSHR |
3789 | EXIM_TMPDIR macro, if this macro is defined. For backward compatibility this |
3790 | macro may be called TMPDIR in old "Local/Makefile"s. It's converted to | |
3791 | EXIM_TMPDIR by the build scripts. | |
3792 | */ | |
059ec3d9 | 3793 | |
75286da3 | 3794 | #ifdef EXIM_TMPDIR |
d7978c0f | 3795 | if (environ) for (uschar ** p = USS environ; *p; p++) |
40c90bca | 3796 | if (Ustrncmp(*p, "TMPDIR=", 7) == 0 && Ustrcmp(*p+7, EXIM_TMPDIR) != 0) |
059ec3d9 | 3797 | { |
40c90bca | 3798 | uschar * newp = store_malloc(Ustrlen(EXIM_TMPDIR) + 8); |
75286da3 | 3799 | sprintf(CS newp, "TMPDIR=%s", EXIM_TMPDIR); |
059ec3d9 | 3800 | *p = newp; |
75286da3 | 3801 | DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", EXIM_TMPDIR); |
059ec3d9 | 3802 | } |
059ec3d9 PH |
3803 | #endif |
3804 | ||
3805 | /* Timezone handling. If timezone_string is "utc", set a flag to cause all | |
3806 | timestamps to be in UTC (gmtime() is used instead of localtime()). Otherwise, | |
3807 | we may need to get rid of a bogus timezone setting. This can arise when Exim is | |
3808 | called by a user who has set the TZ variable. This then affects the timestamps | |
3809 | in log files and in Received: headers, and any created Date: header lines. The | |
3810 | required timezone is settable in the configuration file, so nothing can be done | |
3811 | about this earlier - but hopefully nothing will normally be logged earlier than | |
3812 | this. We have to make a new environment if TZ is wrong, but don't bother if | |
3813 | timestamps_utc is set, because then all times are in UTC anyway. */ | |
3814 | ||
40c90bca | 3815 | if (timezone_string && strcmpic(timezone_string, US"UTC") == 0) |
8768d548 | 3816 | f.timestamps_utc = TRUE; |
059ec3d9 PH |
3817 | else |
3818 | { | |
3819 | uschar *envtz = US getenv("TZ"); | |
4dc2379a JH |
3820 | if (envtz |
3821 | ? !timezone_string || Ustrcmp(timezone_string, envtz) != 0 | |
3822 | : timezone_string != NULL | |
3823 | ) | |
059ec3d9 PH |
3824 | { |
3825 | uschar **p = USS environ; | |
3826 | uschar **new; | |
3827 | uschar **newp; | |
3828 | int count = 0; | |
40c90bca JH |
3829 | if (environ) while (*p++) count++; |
3830 | if (!envtz) count++; | |
3831 | newp = new = store_malloc(sizeof(uschar *) * (count + 1)); | |
3832 | if (environ) for (p = USS environ; *p; p++) | |
3833 | if (Ustrncmp(*p, "TZ=", 3) != 0) *newp++ = *p; | |
3834 | if (timezone_string) | |
3835 | { | |
3836 | *newp = store_malloc(Ustrlen(timezone_string) + 4); | |
059ec3d9 PH |
3837 | sprintf(CS *newp++, "TZ=%s", timezone_string); |
3838 | } | |
3839 | *newp = NULL; | |
3840 | environ = CSS new; | |
3841 | tzset(); | |
3842 | DEBUG(D_any) debug_printf("Reset TZ to %s: time is %s\n", timezone_string, | |
3843 | tod_stamp(tod_log)); | |
3844 | } | |
3845 | } | |
3846 | ||
3847 | /* Handle the case when we have removed the setuid privilege because of -C or | |
cd25e41d | 3848 | -D. This means that the caller of Exim was not root. |
059ec3d9 | 3849 | |
cd25e41d DW |
3850 | There is a problem if we were running as the Exim user. The sysadmin may |
3851 | expect this case to retain privilege because "the binary was called by the | |
3852 | Exim user", but it hasn't, because either the -D option set macros, or the | |
261dc43e | 3853 | -C option set a non-trusted configuration file. There are two possibilities: |
059ec3d9 PH |
3854 | |
3855 | (1) If deliver_drop_privilege is set, Exim is not going to re-exec in order | |
3856 | to do message deliveries. Thus, the fact that it is running as a | |
3857 | non-privileged user is plausible, and might be wanted in some special | |
3858 | configurations. However, really_exim will have been set false when | |
3859 | privilege was dropped, to stop Exim trying to write to its normal log | |
3860 | files. Therefore, re-enable normal log processing, assuming the sysadmin | |
3861 | has set up the log directory correctly. | |
3862 | ||
3863 | (2) If deliver_drop_privilege is not set, the configuration won't work as | |
3864 | apparently intended, and so we log a panic message. In order to retain | |
261dc43e DW |
3865 | root for -C or -D, the caller must either be root or be invoking a |
3866 | trusted configuration file (when deliver_drop_privilege is false). */ | |
059ec3d9 | 3867 | |
4ab69ec7 | 3868 | if ( removed_privilege |
8768d548 | 3869 | && (!f.trusted_config || opt_D_used) |
4ab69ec7 | 3870 | && real_uid == exim_uid) |
059ec3d9 | 3871 | if (deliver_drop_privilege) |
8768d548 | 3872 | f.really_exim = TRUE; /* let logging work normally */ |
059ec3d9 PH |
3873 | else |
3874 | log_write(0, LOG_MAIN|LOG_PANIC, | |
cd25e41d | 3875 | "exim user lost privilege for using %s option", |
8768d548 | 3876 | f.trusted_config? "-D" : "-C"); |
059ec3d9 PH |
3877 | |
3878 | /* Start up Perl interpreter if Perl support is configured and there is a | |
3879 | perl_startup option, and the configuration or the command line specifies | |
3880 | initializing starting. Note that the global variables are actually called | |
3881 | opt_perl_xxx to avoid clashing with perl's namespace (perl_*). */ | |
3882 | ||
3883 | #ifdef EXIM_PERL | |
3884 | if (perl_start_option != 0) | |
3885 | opt_perl_at_start = (perl_start_option > 0); | |
3886 | if (opt_perl_at_start && opt_perl_startup != NULL) | |
3887 | { | |
3888 | uschar *errstr; | |
3889 | DEBUG(D_any) debug_printf("Starting Perl interpreter\n"); | |
9af3c549 JH |
3890 | if ((errstr = init_perl(opt_perl_startup))) |
3891 | exim_fail("exim: error in perl_startup code: %s\n", errstr); | |
059ec3d9 PH |
3892 | opt_perl_started = TRUE; |
3893 | } | |
3894 | #endif /* EXIM_PERL */ | |
3895 | ||
3896 | /* Log the arguments of the call if the configuration file said so. This is | |
3897 | a debugging feature for finding out what arguments certain MUAs actually use. | |
3898 | Don't attempt it if logging is disabled, or if listing variables or if | |
3899 | verifying/testing addresses or expansions. */ | |
3900 | ||
675ae646 | 3901 | if ( (debug_selector & D_any || LOGGING(arguments)) |
8768d548 | 3902 | && f.really_exim && !list_options && !checking) |
059ec3d9 | 3903 | { |
059ec3d9 | 3904 | uschar *p = big_buffer; |
1ac6b2e7 | 3905 | Ustrcpy(p, "cwd= (failed)"); |
3615fa9a | 3906 | |
675ae646 JH |
3907 | if (!initial_cwd) |
3908 | p += 13; | |
3909 | else | |
3910 | { | |
3911 | Ustrncpy(p + 4, initial_cwd, big_buffer_size-5); | |
3912 | p += 4 + Ustrlen(initial_cwd); | |
3913 | /* in case p is near the end and we don't provide enough space for | |
3914 | * string_format to be willing to write. */ | |
3915 | *p = '\0'; | |
3916 | } | |
3615fa9a | 3917 | |
059ec3d9 PH |
3918 | (void)string_format(p, big_buffer_size - (p - big_buffer), " %d args:", argc); |
3919 | while (*p) p++; | |
d7978c0f | 3920 | for (int i = 0; i < argc; i++) |
059ec3d9 PH |
3921 | { |
3922 | int len = Ustrlen(argv[i]); | |
55414b25 | 3923 | const uschar *printing; |
059ec3d9 PH |
3924 | uschar *quote; |
3925 | if (p + len + 8 >= big_buffer + big_buffer_size) | |
3926 | { | |
3927 | Ustrcpy(p, " ..."); | |
3928 | log_write(0, LOG_MAIN, "%s", big_buffer); | |
3929 | Ustrcpy(big_buffer, "..."); | |
3930 | p = big_buffer + 3; | |
3931 | } | |
3932 | printing = string_printing(argv[i]); | |
3933 | if (printing[0] == 0) quote = US"\""; else | |
3934 | { | |
55414b25 | 3935 | const uschar *pp = printing; |
059ec3d9 PH |
3936 | quote = US""; |
3937 | while (*pp != 0) if (isspace(*pp++)) { quote = US"\""; break; } | |
3938 | } | |
5976eb99 | 3939 | p += sprintf(CS p, " %s%.*s%s", quote, (int)(big_buffer_size - |
059ec3d9 | 3940 | (p - big_buffer) - 4), printing, quote); |
059ec3d9 | 3941 | } |
31619da6 | 3942 | |
6c6d6e48 | 3943 | if (LOGGING(arguments)) |
31619da6 PH |
3944 | log_write(0, LOG_MAIN, "%s", big_buffer); |
3945 | else | |
3946 | debug_printf("%s\n", big_buffer); | |
059ec3d9 PH |
3947 | } |
3948 | ||
3949 | /* Set the working directory to be the top-level spool directory. We don't rely | |
3950 | on this in the code, which always uses fully qualified names, but it's useful | |
3951 | for core dumps etc. Don't complain if it fails - the spool directory might not | |
3952 | be generally accessible and calls with the -C option (and others) have lost | |
ba18e66a PH |
3953 | privilege by now. Before the chdir, we try to ensure that the directory exists. |
3954 | */ | |
059ec3d9 PH |
3955 | |
3956 | if (Uchdir(spool_directory) != 0) | |
3957 | { | |
1ac6b2e7 | 3958 | int dummy; |
ba18e66a | 3959 | (void)directory_make(spool_directory, US"", SPOOL_DIRECTORY_MODE, FALSE); |
1ac6b2e7 | 3960 | dummy = /* quieten compiler */ Uchdir(spool_directory); |
cab0c277 | 3961 | dummy = dummy; /* yet more compiler quietening, sigh */ |
059ec3d9 PH |
3962 | } |
3963 | ||
3964 | /* Handle calls with the -bi option. This is a sendmail option to rebuild *the* | |
3965 | alias file. Exim doesn't have such a concept, but this call is screwed into | |
3966 | Sun's YP makefiles. Handle this by calling a configured script, as the real | |
3967 | user who called Exim. The -oA option can be used to pass an argument to the | |
3968 | script. */ | |
3969 | ||
3970 | if (bi_option) | |
3971 | { | |
1fe64dcc | 3972 | (void)fclose(config_file); |
059ec3d9 PH |
3973 | if (bi_command != NULL) |
3974 | { | |
3975 | int i = 0; | |
3976 | uschar *argv[3]; | |
3977 | argv[i++] = bi_command; | |
3978 | if (alias_arg != NULL) argv[i++] = alias_arg; | |
3979 | argv[i++] = NULL; | |
3980 | ||
3981 | setgroups(group_count, group_list); | |
3982 | exim_setugid(real_uid, real_gid, FALSE, US"running bi_command"); | |
3983 | ||
3984 | DEBUG(D_exec) debug_printf("exec %.256s %.256s\n", argv[0], | |
3985 | (argv[1] == NULL)? US"" : argv[1]); | |
3986 | ||
3987 | execv(CS argv[0], (char *const *)argv); | |
9af3c549 | 3988 | exim_fail("exim: exec failed: %s\n", strerror(errno)); |
059ec3d9 PH |
3989 | } |
3990 | else | |
3991 | { | |
3992 | DEBUG(D_any) debug_printf("-bi used but bi_command not set; exiting\n"); | |
3993 | exit(EXIT_SUCCESS); | |
3994 | } | |
3995 | } | |
3996 | ||
a3fb9793 PP |
3997 | /* We moved the admin/trusted check to be immediately after reading the |
3998 | configuration file. We leave these prints here to ensure that syslog setup, | |
3999 | logfile setup, and so on has already happened. */ | |
059ec3d9 | 4000 | |
8768d548 JH |
4001 | if (f.trusted_caller) DEBUG(D_any) debug_printf("trusted user\n"); |
4002 | if (f.admin_user) DEBUG(D_any) debug_printf("admin user\n"); | |
059ec3d9 PH |
4003 | |
4004 | /* Only an admin user may start the daemon or force a queue run in the default | |
4005 | configuration, but the queue run restriction can be relaxed. Only an admin | |
4006 | user may request that a message be returned to its sender forthwith. Only an | |
4007 | admin user may specify a debug level greater than D_v (because it might show | |
4008 | passwords, etc. in lookup queries). Only an admin user may request a queue | |
8544e77a PP |
4009 | count. Only an admin user can use the test interface to scan for email |
4010 | (because Exim will be in the spool dir and able to look at mails). */ | |
059ec3d9 | 4011 | |
8768d548 | 4012 | if (!f.admin_user) |
059ec3d9 PH |
4013 | { |
4014 | BOOL debugset = (debug_selector & ~D_v) != 0; | |
8768d548 | 4015 | if (deliver_give_up || f.daemon_listen || malware_test_file || |
059ec3d9 PH |
4016 | (count_queue && queue_list_requires_admin) || |
4017 | (list_queue && queue_list_requires_admin) || | |
4018 | (queue_interval >= 0 && prod_requires_admin) || | |
8768d548 | 4019 | (debugset && !f.running_in_test_harness)) |
9af3c549 | 4020 | exim_fail("exim:%s permission denied\n", debugset? " debugging" : ""); |
059ec3d9 PH |
4021 | } |
4022 | ||
4023 | /* If the real user is not root or the exim uid, the argument for passing | |
4024 | in an open TCP/IP connection for another message is not permitted, nor is | |
4025 | running with the -N option for any delivery action, unless this call to exim is | |
4026 | one that supplied an input message, or we are using a patched exim for | |
4027 | regression testing. */ | |
4028 | ||
4029 | if (real_uid != root_uid && real_uid != exim_uid && | |
4030 | (continue_hostname != NULL || | |
8768d548 JH |
4031 | (f.dont_deliver && |
4032 | (queue_interval >= 0 || f.daemon_listen || msg_action_arg > 0) | |
4033 | )) && !f.running_in_test_harness) | |
9af3c549 | 4034 | exim_fail("exim: Permission denied\n"); |
059ec3d9 PH |
4035 | |
4036 | /* If the caller is not trusted, certain arguments are ignored when running for | |
f05da2e8 PH |
4037 | real, but are permitted when checking things (-be, -bv, -bt, -bh, -bf, -bF). |
4038 | Note that authority for performing certain actions on messages is tested in the | |
059ec3d9 PH |
4039 | queue_action() function. */ |
4040 | ||
8768d548 | 4041 | if (!f.trusted_caller && !checking) |
059ec3d9 PH |
4042 | { |
4043 | sender_host_name = sender_host_address = interface_address = | |
4044 | sender_ident = received_protocol = NULL; | |
4045 | sender_host_port = interface_port = 0; | |
4046 | sender_host_authenticated = authenticated_sender = authenticated_id = NULL; | |
4047 | } | |
4048 | ||
4049 | /* If a sender host address is set, extract the optional port number off the | |
4050 | end of it and check its syntax. Do the same thing for the interface address. | |
4051 | Exim exits if the syntax is bad. */ | |
4052 | ||
4053 | else | |
4054 | { | |
4055 | if (sender_host_address != NULL) | |
4056 | sender_host_port = check_port(sender_host_address); | |
4057 | if (interface_address != NULL) | |
4058 | interface_port = check_port(interface_address); | |
4059 | } | |
4060 | ||
f4ee74ac PP |
4061 | /* If the caller is trusted, then they can use -G to suppress_local_fixups. */ |
4062 | if (flag_G) | |
4063 | { | |
8768d548 | 4064 | if (f.trusted_caller) |
f4ee74ac | 4065 | { |
8768d548 | 4066 | f.suppress_local_fixups = f.suppress_local_fixups_default = TRUE; |
f4ee74ac PP |
4067 | DEBUG(D_acl) debug_printf("suppress_local_fixups forced on by -G\n"); |
4068 | } | |
4069 | else | |
9af3c549 | 4070 | exim_fail("exim: permission denied (-G requires a trusted user)\n"); |
f4ee74ac PP |
4071 | } |
4072 | ||
059ec3d9 PH |
4073 | /* If an SMTP message is being received check to see if the standard input is a |
4074 | TCP/IP socket. If it is, we assume that Exim was called from inetd if the | |
4075 | caller is root or the Exim user, or if the port is a privileged one. Otherwise, | |
4076 | barf. */ | |
4077 | ||
4078 | if (smtp_input) | |
4079 | { | |
4080 | union sockaddr_46 inetd_sock; | |
36a3b041 | 4081 | EXIM_SOCKLEN_T size = sizeof(inetd_sock); |
059ec3d9 PH |
4082 | if (getpeername(0, (struct sockaddr *)(&inetd_sock), &size) == 0) |
4083 | { | |
4084 | int family = ((struct sockaddr *)(&inetd_sock))->sa_family; | |
4085 | if (family == AF_INET || family == AF_INET6) | |
4086 | { | |
4087 | union sockaddr_46 interface_sock; | |
4088 | size = sizeof(interface_sock); | |
4089 | ||
4090 | if (getsockname(0, (struct sockaddr *)(&interface_sock), &size) == 0) | |
4091 | interface_address = host_ntoa(-1, &interface_sock, NULL, | |
4092 | &interface_port); | |
4093 | ||
817d9f57 | 4094 | if (host_is_tls_on_connect_port(interface_port)) tls_in.on_connect = TRUE; |
059ec3d9 PH |
4095 | |
4096 | if (real_uid == root_uid || real_uid == exim_uid || interface_port < 1024) | |
4097 | { | |
8768d548 | 4098 | f.is_inetd = TRUE; |
059ec3d9 PH |
4099 | sender_host_address = host_ntoa(-1, (struct sockaddr *)(&inetd_sock), |
4100 | NULL, &sender_host_port); | |
4101 | if (mua_wrapper) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Input from " | |
4102 | "inetd is not supported when mua_wrapper is set"); | |
4103 | } | |
4104 | else | |
9af3c549 | 4105 | exim_fail( |
059ec3d9 | 4106 | "exim: Permission denied (unprivileged user, unprivileged port)\n"); |
059ec3d9 PH |
4107 | } |
4108 | } | |
4109 | } | |
4110 | ||
4111 | /* If the load average is going to be needed while receiving a message, get it | |
4112 | now for those OS that require the first call to os_getloadavg() to be done as | |
4113 | root. There will be further calls later for each message received. */ | |
4114 | ||
4115 | #ifdef LOAD_AVG_NEEDS_ROOT | |
4116 | if (receiving_message && | |
4117 | (queue_only_load >= 0 || | |
8768d548 | 4118 | (f.is_inetd && smtp_load_reserve >= 0) |
059ec3d9 PH |
4119 | )) |
4120 | { | |
8669f003 | 4121 | load_average = OS_GETLOADAVG(); |
059ec3d9 PH |
4122 | } |
4123 | #endif | |
4124 | ||
4125 | /* The queue_only configuration option can be overridden by -odx on the command | |
4126 | line, except that if queue_only_override is false, queue_only cannot be unset | |
4127 | from the command line. */ | |
4128 | ||
4129 | if (queue_only_set && (queue_only_override || arg_queue_only)) | |
4130 | queue_only = arg_queue_only; | |
4131 | ||
4132 | /* The receive_timeout and smtp_receive_timeout options can be overridden by | |
4133 | -or and -os. */ | |
4134 | ||
4135 | if (arg_receive_timeout >= 0) receive_timeout = arg_receive_timeout; | |
4136 | if (arg_smtp_receive_timeout >= 0) | |
4137 | smtp_receive_timeout = arg_smtp_receive_timeout; | |
4138 | ||
4139 | /* If Exim was started with root privilege, unless we have already removed the | |
4140 | root privilege above as a result of -C, -D, -be, -bf or -bF, remove it now | |
4141 | except when starting the daemon or doing some kind of delivery or address | |
4142 | testing (-bt). These are the only cases when root need to be retained. We run | |
4143 | as exim for -bv and -bh. However, if deliver_drop_privilege is set, root is | |
805e5aab TF |
4144 | retained only for starting the daemon. We always do the initgroups() in this |
4145 | situation (controlled by the TRUE below), in order to be as close as possible | |
4146 | to the state Exim usually runs in. */ | |
059ec3d9 PH |
4147 | |
4148 | if (!unprivileged && /* originally had root AND */ | |
4149 | !removed_privilege && /* still got root AND */ | |
8768d548 | 4150 | !f.daemon_listen && /* not starting the daemon */ |
059ec3d9 PH |
4151 | queue_interval <= 0 && /* (either kind of daemon) */ |
4152 | ( /* AND EITHER */ | |
4153 | deliver_drop_privilege || /* requested unprivileged */ | |
4154 | ( /* OR */ | |
4155 | queue_interval < 0 && /* not running the queue */ | |
4156 | (msg_action_arg < 0 || /* and */ | |
4157 | msg_action != MSG_DELIVER) && /* not delivering and */ | |
8768d548 | 4158 | (!checking || !f.address_test_mode) /* not address checking */ |
57cc2785 | 4159 | ) ) ) |
805e5aab | 4160 | exim_setugid(exim_uid, exim_gid, TRUE, US"privilege not needed"); |
059ec3d9 PH |
4161 | |
4162 | /* When we are retaining a privileged uid, we still change to the exim gid. */ | |
4163 | ||
1670ef10 PP |
4164 | else |
4165 | { | |
4166 | int rv; | |
4167 | rv = setgid(exim_gid); | |
4168 | /* Impact of failure is that some stuff might end up with an incorrect group. | |
4169 | We track this for failures from root, since any attempt to change privilege | |
4170 | by root should succeed and failures should be examined. For non-root, | |
4171 | there's no security risk. For me, it's { exim -bV } on a just-built binary, | |
4172 | no need to complain then. */ | |
4173 | if (rv == -1) | |
33191679 | 4174 | if (!(unprivileged || removed_privilege)) |
9af3c549 | 4175 | exim_fail("exim: changing group failed: %s\n", strerror(errno)); |
1670ef10 | 4176 | else |
33191679 | 4177 | DEBUG(D_any) debug_printf("changing group to %ld failed: %s\n", |
1670ef10 | 4178 | (long int)exim_gid, strerror(errno)); |
1670ef10 | 4179 | } |
059ec3d9 | 4180 | |
8544e77a PP |
4181 | /* Handle a request to scan a file for malware */ |
4182 | if (malware_test_file) | |
4183 | { | |
dbc4b90d | 4184 | #ifdef WITH_CONTENT_SCAN |
8544e77a PP |
4185 | int result; |
4186 | set_process_info("scanning file for malware"); | |
4187 | result = malware_in_file(malware_test_file); | |
4188 | if (result == FAIL) | |
4189 | { | |
4190 | printf("No malware found.\n"); | |
4191 | exit(EXIT_SUCCESS); | |
4192 | } | |
4193 | if (result != OK) | |
4194 | { | |
4195 | printf("Malware lookup returned non-okay/fail: %d\n", result); | |
4196 | exit(EXIT_FAILURE); | |
4197 | } | |
4198 | if (malware_name) | |
4199 | printf("Malware found: %s\n", malware_name); | |
4200 | else | |
4201 | printf("Malware scan detected malware of unknown name.\n"); | |
dbc4b90d PP |
4202 | #else |
4203 | printf("Malware scanning not enabled at compile time.\n"); | |
4204 | #endif | |
8544e77a PP |
4205 | exit(EXIT_FAILURE); |
4206 | } | |
4207 | ||
059ec3d9 PH |
4208 | /* Handle a request to list the delivery queue */ |
4209 | ||
4210 | if (list_queue) | |
4211 | { | |
4212 | set_process_info("listing the queue"); | |
4213 | queue_list(list_queue_option, argv + recipients_arg, argc - recipients_arg); | |
4214 | exit(EXIT_SUCCESS); | |
4215 | } | |
4216 | ||
4217 | /* Handle a request to count the delivery queue */ | |
4218 | ||
4219 | if (count_queue) | |
4220 | { | |
4221 | set_process_info("counting the queue"); | |
4222 | queue_count(); | |
4223 | exit(EXIT_SUCCESS); | |
4224 | } | |
4225 | ||
0ef732d9 PH |
4226 | /* Handle actions on specific messages, except for the force delivery and |
4227 | message load actions, which are done below. Some actions take a whole list of | |
4228 | message ids, which are known to continue up to the end of the arguments. Others | |
4229 | take a single message id and then operate on the recipients list. */ | |
059ec3d9 | 4230 | |
0ef732d9 | 4231 | if (msg_action_arg > 0 && msg_action != MSG_DELIVER && msg_action != MSG_LOAD) |
059ec3d9 PH |
4232 | { |
4233 | int yield = EXIT_SUCCESS; | |
4234 | set_process_info("acting on specified messages"); | |
4235 | ||
7ea1237c MK |
4236 | /* ACL definitions may be needed when removing a message (-Mrm) because |
4237 | event_action gets expanded */ | |
4238 | ||
4239 | if (msg_action == MSG_REMOVE) | |
4240 | readconf_rest(); | |
4241 | ||
059ec3d9 PH |
4242 | if (!one_msg_action) |
4243 | { | |
4244 | for (i = msg_action_arg; i < argc; i++) | |
4245 | if (!queue_action(argv[i], msg_action, NULL, 0, 0)) | |
4246 | yield = EXIT_FAILURE; | |
4247 | } | |
4248 | ||
4249 | else if (!queue_action(argv[msg_action_arg], msg_action, argv, argc, | |
4250 | recipients_arg)) yield = EXIT_FAILURE; | |
4251 | exit(yield); | |
4252 | } | |
4253 | ||
cb46fd2b | 4254 | /* We used to set up here to skip reading the ACL section, on |
8768d548 | 4255 | (msg_action_arg > 0 || (queue_interval == 0 && !f.daemon_listen) |
cb46fd2b JH |
4256 | Now, since the intro of the ${acl } expansion, ACL definitions may be |
4257 | needed in transports so we lost the optimisation. */ | |
059ec3d9 | 4258 | |
cb46fd2b | 4259 | readconf_rest(); |
059ec3d9 PH |
4260 | |
4261 | /* The configuration data will have been read into POOL_PERM because we won't | |
4262 | ever want to reset back past it. Change the current pool to POOL_MAIN. In fact, | |
4263 | this is just a bit of pedantic tidiness. It wouldn't really matter if the | |
4264 | configuration were read into POOL_MAIN, because we don't do any resets till | |
4265 | later on. However, it seems right, and it does ensure that both pools get used. | |
4266 | */ | |
4267 | ||
4268 | store_pool = POOL_MAIN; | |
4269 | ||
4270 | /* Handle the -brt option. This is for checking out retry configurations. | |
4271 | The next three arguments are a domain name or a complete address, and | |
4272 | optionally two error numbers. All it does is to call the function that | |
4273 | scans the retry configuration data. */ | |
4274 | ||
4275 | if (test_retry_arg >= 0) | |
4276 | { | |
4277 | retry_config *yield; | |
4278 | int basic_errno = 0; | |
4279 | int more_errno = 0; | |
4280 | uschar *s1, *s2; | |
4281 | ||
4282 | if (test_retry_arg >= argc) | |
4283 | { | |
4284 | printf("-brt needs a domain or address argument\n"); | |
9bfb7e1b | 4285 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4286 | } |
4287 | s1 = argv[test_retry_arg++]; | |
4288 | s2 = NULL; | |
4289 | ||
4290 | /* If the first argument contains no @ and no . it might be a local user | |
4291 | or it might be a single-component name. Treat as a domain. */ | |
4292 | ||
4293 | if (Ustrchr(s1, '@') == NULL && Ustrchr(s1, '.') == NULL) | |
4294 | { | |
4295 | printf("Warning: \"%s\" contains no '@' and no '.' characters. It is " | |
4296 | "being \ntreated as a one-component domain, not as a local part.\n\n", | |
4297 | s1); | |
4298 | } | |
4299 | ||
4300 | /* There may be an optional second domain arg. */ | |
4301 | ||
4302 | if (test_retry_arg < argc && Ustrchr(argv[test_retry_arg], '.') != NULL) | |
4303 | s2 = argv[test_retry_arg++]; | |
4304 | ||
4305 | /* The final arg is an error name */ | |
4306 | ||
4307 | if (test_retry_arg < argc) | |
4308 | { | |
4309 | uschar *ss = argv[test_retry_arg]; | |
4310 | uschar *error = | |
4311 | readconf_retry_error(ss, ss + Ustrlen(ss), &basic_errno, &more_errno); | |
4312 | if (error != NULL) | |
4313 | { | |
4314 | printf("%s\n", CS error); | |
4315 | return EXIT_FAILURE; | |
4316 | } | |
4317 | ||
e97957bc PH |
4318 | /* For the {MAIL,RCPT,DATA}_4xx errors, a value of 255 means "any", and a |
4319 | code > 100 as an error is for matching codes to the decade. Turn them into | |
4320 | a real error code, off the decade. */ | |
059ec3d9 | 4321 | |
e97957bc PH |
4322 | if (basic_errno == ERRNO_MAIL4XX || |
4323 | basic_errno == ERRNO_RCPT4XX || | |
4324 | basic_errno == ERRNO_DATA4XX) | |
059ec3d9 PH |
4325 | { |
4326 | int code = (more_errno >> 8) & 255; | |
4327 | if (code == 255) | |
4328 | more_errno = (more_errno & 0xffff00ff) | (21 << 8); | |
4329 | else if (code > 100) | |
4330 | more_errno = (more_errno & 0xffff00ff) | ((code - 96) << 8); | |
4331 | } | |
4332 | } | |
4333 | ||
32dfdf8b JH |
4334 | if (!(yield = retry_find_config(s1, s2, basic_errno, more_errno))) |
4335 | printf("No retry information found\n"); | |
4336 | else | |
059ec3d9 | 4337 | { |
059ec3d9 PH |
4338 | more_errno = yield->more_errno; |
4339 | printf("Retry rule: %s ", yield->pattern); | |
4340 | ||
4341 | if (yield->basic_errno == ERRNO_EXIMQUOTA) | |
4342 | { | |
4343 | printf("quota%s%s ", | |
4344 | (more_errno > 0)? "_" : "", | |
4345 | (more_errno > 0)? readconf_printtime(more_errno) : US""); | |
4346 | } | |
4347 | else if (yield->basic_errno == ECONNREFUSED) | |
4348 | { | |
4349 | printf("refused%s%s ", | |
4350 | (more_errno > 0)? "_" : "", | |
4351 | (more_errno == 'M')? "MX" : | |
4352 | (more_errno == 'A')? "A" : ""); | |
4353 | } | |
4354 | else if (yield->basic_errno == ETIMEDOUT) | |
4355 | { | |
4356 | printf("timeout"); | |
4357 | if ((more_errno & RTEF_CTOUT) != 0) printf("_connect"); | |
4358 | more_errno &= 255; | |
4359 | if (more_errno != 0) printf("_%s", | |
4360 | (more_errno == 'M')? "MX" : "A"); | |
4361 | printf(" "); | |
4362 | } | |
4363 | else if (yield->basic_errno == ERRNO_AUTHFAIL) | |
4364 | printf("auth_failed "); | |
4365 | else printf("* "); | |
4366 | ||
d7978c0f | 4367 | for (retry_rule * r = yield->rules; r; r = r->next) |
059ec3d9 PH |
4368 | { |
4369 | printf("%c,%s", r->rule, readconf_printtime(r->timeout)); /* Do not */ | |
4370 | printf(",%s", readconf_printtime(r->p1)); /* amalgamate */ | |
4371 | if (r->rule == 'G') | |
4372 | { | |
4373 | int x = r->p2; | |
4374 | int f = x % 1000; | |
4375 | int d = 100; | |
4376 | printf(",%d.", x/1000); | |
4377 | do | |
4378 | { | |
4379 | printf("%d", f/d); | |
4380 | f %= d; | |
4381 | d /= 10; | |
4382 | } | |
4383 | while (f != 0); | |
4384 | } | |
4385 | printf("; "); | |
4386 | } | |
4387 | ||
4388 | printf("\n"); | |
4389 | } | |
9bfb7e1b | 4390 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4391 | } |
4392 | ||
4393 | /* Handle a request to list one or more configuration options */ | |
12f69989 | 4394 | /* If -n was set, we suppress some information */ |
059ec3d9 PH |
4395 | |
4396 | if (list_options) | |
4397 | { | |
2be324ee | 4398 | BOOL fail = FALSE; |
059ec3d9 | 4399 | set_process_info("listing variables"); |
2be324ee JH |
4400 | if (recipients_arg >= argc) |
4401 | fail = !readconf_print(US"all", NULL, flag_n); | |
4402 | else for (i = recipients_arg; i < argc; i++) | |
4403 | { | |
4404 | if (i < argc - 1 && | |
4405 | (Ustrcmp(argv[i], "router") == 0 || | |
4406 | Ustrcmp(argv[i], "transport") == 0 || | |
4407 | Ustrcmp(argv[i], "authenticator") == 0 || | |
4408 | Ustrcmp(argv[i], "macro") == 0 || | |
4409 | Ustrcmp(argv[i], "environment") == 0)) | |
059ec3d9 | 4410 | { |
2be324ee JH |
4411 | fail |= !readconf_print(argv[i+1], argv[i], flag_n); |
4412 | i++; | |
059ec3d9 | 4413 | } |
2be324ee JH |
4414 | else |
4415 | fail = !readconf_print(argv[i], NULL, flag_n); | |
4416 | } | |
4417 | exim_exit(fail ? EXIT_FAILURE : EXIT_SUCCESS, US"main"); | |
059ec3d9 PH |
4418 | } |
4419 | ||
bf3c2c6b HSHR |
4420 | if (list_config) |
4421 | { | |
4422 | set_process_info("listing config"); | |
2be324ee JH |
4423 | exim_exit(readconf_print(US"config", NULL, flag_n) |
4424 | ? EXIT_SUCCESS : EXIT_FAILURE, US"main"); | |
bf3c2c6b HSHR |
4425 | } |
4426 | ||
059ec3d9 | 4427 | |
2592e6c0 JH |
4428 | /* Initialise subsystems as required */ |
4429 | #ifndef DISABLE_DKIM | |
4430 | dkim_exim_init(); | |
4431 | #endif | |
9094b84b | 4432 | deliver_init(); |
2592e6c0 JH |
4433 | |
4434 | ||
059ec3d9 | 4435 | /* Handle a request to deliver one or more messages that are already on the |
0ef732d9 PH |
4436 | queue. Values of msg_action other than MSG_DELIVER and MSG_LOAD are dealt with |
4437 | above. MSG_LOAD is handled with -be (which is the only time it applies) below. | |
4438 | ||
4439 | Delivery of specific messages is typically used for a small number when | |
4440 | prodding by hand (when the option forced_delivery will be set) or when | |
4441 | re-execing to regain root privilege. Each message delivery must happen in a | |
4442 | separate process, so we fork a process for each one, and run them sequentially | |
4443 | so that debugging output doesn't get intertwined, and to avoid spawning too | |
4444 | many processes if a long list is given. However, don't fork for the last one; | |
4445 | this saves a process in the common case when Exim is called to deliver just one | |
4446 | message. */ | |
4447 | ||
4448 | if (msg_action_arg > 0 && msg_action != MSG_LOAD) | |
059ec3d9 | 4449 | { |
8768d548 | 4450 | if (prod_requires_admin && !f.admin_user) |
059ec3d9 PH |
4451 | { |
4452 | fprintf(stderr, "exim: Permission denied\n"); | |
9bfb7e1b | 4453 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4454 | } |
4455 | set_process_info("delivering specified messages"); | |
8768d548 | 4456 | if (deliver_give_up) forced_delivery = f.deliver_force_thaw = TRUE; |
059ec3d9 PH |
4457 | for (i = msg_action_arg; i < argc; i++) |
4458 | { | |
4459 | int status; | |
4460 | pid_t pid; | |
4461 | if (i == argc - 1) | |
4462 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4463 | else if ((pid = fork()) == 0) | |
4464 | { | |
4465 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4466 | _exit(EXIT_SUCCESS); | |
4467 | } | |
4468 | else if (pid < 0) | |
4469 | { | |
4470 | fprintf(stderr, "failed to fork delivery process for %s: %s\n", argv[i], | |
4471 | strerror(errno)); | |
9bfb7e1b | 4472 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4473 | } |
4474 | else wait(&status); | |
4475 | } | |
9bfb7e1b | 4476 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4477 | } |
4478 | ||
4479 | ||
4480 | /* If only a single queue run is requested, without SMTP listening, we can just | |
4481 | turn into a queue runner, with an optional starting message id. */ | |
4482 | ||
8768d548 | 4483 | if (queue_interval == 0 && !f.daemon_listen) |
059ec3d9 PH |
4484 | { |
4485 | DEBUG(D_queue_run) debug_printf("Single queue run%s%s%s%s\n", | |
4486 | (start_queue_run_id == NULL)? US"" : US" starting at ", | |
4487 | (start_queue_run_id == NULL)? US"" : start_queue_run_id, | |
4488 | (stop_queue_run_id == NULL)? US"" : US" stopping at ", | |
4489 | (stop_queue_run_id == NULL)? US"" : stop_queue_run_id); | |
6073ad45 | 4490 | if (*queue_name) |
4d146046 | 4491 | set_process_info("running the '%s' queue (single queue run)", queue_name); |
6073ad45 JH |
4492 | else |
4493 | set_process_info("running the queue (single queue run)"); | |
059ec3d9 | 4494 | queue_run(start_queue_run_id, stop_queue_run_id, FALSE); |
9bfb7e1b | 4495 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4496 | } |
4497 | ||
4498 | ||
4499 | /* Find the login name of the real user running this process. This is always | |
4500 | needed when receiving a message, because it is written into the spool file. It | |
4501 | may also be used to construct a from: or a sender: header, and in this case we | |
4502 | need the user's full name as well, so save a copy of it, checked for RFC822 | |
4503 | syntax and munged if necessary, if it hasn't previously been set by the -F | |
4504 | argument. We may try to get the passwd entry more than once, in case NIS or | |
4505 | other delays are in evidence. Save the home directory for use in filter testing | |
4506 | (only). */ | |
4507 | ||
4508 | for (i = 0;;) | |
4509 | { | |
4510 | if ((pw = getpwuid(real_uid)) != NULL) | |
4511 | { | |
4512 | originator_login = string_copy(US pw->pw_name); | |
4513 | originator_home = string_copy(US pw->pw_dir); | |
4514 | ||
4515 | /* If user name has not been set by -F, set it from the passwd entry | |
4516 | unless -f has been used to set the sender address by a trusted user. */ | |
4517 | ||
bb07bcd3 | 4518 | if (!originator_name) |
059ec3d9 | 4519 | { |
8768d548 | 4520 | if (!sender_address || (!f.trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 PH |
4521 | { |
4522 | uschar *name = US pw->pw_gecos; | |
4523 | uschar *amp = Ustrchr(name, '&'); | |
4524 | uschar buffer[256]; | |
4525 | ||
4526 | /* Most Unix specify that a '&' character in the gecos field is | |
4527 | replaced by a copy of the login name, and some even specify that | |
4528 | the first character should be upper cased, so that's what we do. */ | |
4529 | ||
bb07bcd3 | 4530 | if (amp) |
059ec3d9 PH |
4531 | { |
4532 | int loffset; | |
4533 | string_format(buffer, sizeof(buffer), "%.*s%n%s%s", | |
bb07bcd3 | 4534 | (int)(amp - name), name, &loffset, originator_login, amp + 1); |
059ec3d9 PH |
4535 | buffer[loffset] = toupper(buffer[loffset]); |
4536 | name = buffer; | |
4537 | } | |
4538 | ||
4539 | /* If a pattern for matching the gecos field was supplied, apply | |
4540 | it and then expand the name string. */ | |
4541 | ||
bb07bcd3 | 4542 | if (gecos_pattern && gecos_name) |
059ec3d9 PH |
4543 | { |
4544 | const pcre *re; | |
4545 | re = regex_must_compile(gecos_pattern, FALSE, TRUE); /* Use malloc */ | |
4546 | ||
4547 | if (regex_match_and_setup(re, name, 0, -1)) | |
4548 | { | |
4549 | uschar *new_name = expand_string(gecos_name); | |
4550 | expand_nmax = -1; | |
bb07bcd3 | 4551 | if (new_name) |
059ec3d9 PH |
4552 | { |
4553 | DEBUG(D_receive) debug_printf("user name \"%s\" extracted from " | |
4554 | "gecos field \"%s\"\n", new_name, name); | |
4555 | name = new_name; | |
4556 | } | |
4557 | else DEBUG(D_receive) debug_printf("failed to expand gecos_name string " | |
4558 | "\"%s\": %s\n", gecos_name, expand_string_message); | |
4559 | } | |
4560 | else DEBUG(D_receive) debug_printf("gecos_pattern \"%s\" did not match " | |
4561 | "gecos field \"%s\"\n", gecos_pattern, name); | |
4562 | store_free((void *)re); | |
4563 | } | |
4564 | originator_name = string_copy(name); | |
4565 | } | |
4566 | ||
4567 | /* A trusted caller has used -f but not -F */ | |
4568 | ||
4569 | else originator_name = US""; | |
4570 | } | |
4571 | ||
4572 | /* Break the retry loop */ | |
4573 | ||
4574 | break; | |
4575 | } | |
4576 | ||
4577 | if (++i > finduser_retries) break; | |
4578 | sleep(1); | |
4579 | } | |
4580 | ||
4581 | /* If we cannot get a user login, log the incident and give up, unless the | |
4582 | configuration specifies something to use. When running in the test harness, | |
8800895a | 4583 | any setting of unknown_login overrides the actual name. */ |
059ec3d9 | 4584 | |
8768d548 | 4585 | if (originator_login == NULL || f.running_in_test_harness) |
059ec3d9 PH |
4586 | { |
4587 | if (unknown_login != NULL) | |
4588 | { | |
4589 | originator_login = expand_string(unknown_login); | |
4590 | if (originator_name == NULL && unknown_username != NULL) | |
4591 | originator_name = expand_string(unknown_username); | |
4592 | if (originator_name == NULL) originator_name = US""; | |
4593 | } | |
4594 | if (originator_login == NULL) | |
4595 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to get user name for uid %d", | |
4596 | (int)real_uid); | |
4597 | } | |
4598 | ||
4599 | /* Ensure that the user name is in a suitable form for use as a "phrase" in an | |
4600 | RFC822 address.*/ | |
4601 | ||
4602 | originator_name = string_copy(parse_fix_phrase(originator_name, | |
4603 | Ustrlen(originator_name), big_buffer, big_buffer_size)); | |
4604 | ||
4605 | /* If a message is created by this call of Exim, the uid/gid of its originator | |
4606 | are those of the caller. These values are overridden if an existing message is | |
4607 | read in from the spool. */ | |
4608 | ||
4609 | originator_uid = real_uid; | |
4610 | originator_gid = real_gid; | |
4611 | ||
4612 | DEBUG(D_receive) debug_printf("originator: uid=%d gid=%d login=%s name=%s\n", | |
4613 | (int)originator_uid, (int)originator_gid, originator_login, originator_name); | |
4614 | ||
4615 | /* Run in daemon and/or queue-running mode. The function daemon_go() never | |
4616 | returns. We leave this till here so that the originator_ fields are available | |
47c7a64a PH |
4617 | for incoming messages via the daemon. The daemon cannot be run in mua_wrapper |
4618 | mode. */ | |
059ec3d9 | 4619 | |
8768d548 | 4620 | if (f.daemon_listen || f.inetd_wait_mode || queue_interval > 0) |
059ec3d9 | 4621 | { |
47c7a64a PH |
4622 | if (mua_wrapper) |
4623 | { | |
4624 | fprintf(stderr, "Daemon cannot be run when mua_wrapper is set\n"); | |
4625 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Daemon cannot be run when " | |
4626 | "mua_wrapper is set"); | |
4627 | } | |
059ec3d9 PH |
4628 | daemon_go(); |
4629 | } | |
4630 | ||
4631 | /* If the sender ident has not been set (by a trusted caller) set it to | |
4632 | the caller. This will get overwritten below for an inetd call. If a trusted | |
4633 | caller has set it empty, unset it. */ | |
4634 | ||
4635 | if (sender_ident == NULL) sender_ident = originator_login; | |
4636 | else if (sender_ident[0] == 0) sender_ident = NULL; | |
4637 | ||
4638 | /* Handle the -brw option, which is for checking out rewriting rules. Cause log | |
4639 | writes (on errors) to go to stderr instead. Can't do this earlier, as want the | |
4640 | originator_* variables set. */ | |
4641 | ||
4642 | if (test_rewrite_arg >= 0) | |
4643 | { | |
8768d548 | 4644 | f.really_exim = FALSE; |
059ec3d9 PH |
4645 | if (test_rewrite_arg >= argc) |
4646 | { | |
4647 | printf("-brw needs an address argument\n"); | |
9bfb7e1b | 4648 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4649 | } |
4650 | rewrite_test(argv[test_rewrite_arg]); | |
9bfb7e1b | 4651 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4652 | } |
4653 | ||
4654 | /* A locally-supplied message is considered to be coming from a local user | |
4655 | unless a trusted caller supplies a sender address with -f, or is passing in the | |
4656 | message via SMTP (inetd invocation or otherwise). */ | |
4657 | ||
4658 | if ((sender_address == NULL && !smtp_input) || | |
8768d548 | 4659 | (!f.trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 | 4660 | { |
8768d548 | 4661 | f.sender_local = TRUE; |
059ec3d9 PH |
4662 | |
4663 | /* A trusted caller can supply authenticated_sender and authenticated_id | |
33d73e3b PH |
4664 | via -oMas and -oMai and if so, they will already be set. Otherwise, force |
4665 | defaults except when host checking. */ | |
059ec3d9 | 4666 | |
33d73e3b | 4667 | if (authenticated_sender == NULL && !host_checking) |
059ec3d9 PH |
4668 | authenticated_sender = string_sprintf("%s@%s", originator_login, |
4669 | qualify_domain_sender); | |
33d73e3b PH |
4670 | if (authenticated_id == NULL && !host_checking) |
4671 | authenticated_id = originator_login; | |
059ec3d9 PH |
4672 | } |
4673 | ||
4674 | /* Trusted callers are always permitted to specify the sender address. | |
4675 | Untrusted callers may specify it if it matches untrusted_set_sender, or if what | |
4676 | is specified is the empty address. However, if a trusted caller does not | |
4677 | specify a sender address for SMTP input, we leave sender_address unset. This | |
4678 | causes the MAIL commands to be honoured. */ | |
4679 | ||
4680 | if ((!smtp_input && sender_address == NULL) || | |
4681 | !receive_check_set_sender(sender_address)) | |
4682 | { | |
4683 | /* Either the caller is not permitted to set a general sender, or this is | |
4684 | non-SMTP input and the trusted caller has not set a sender. If there is no | |
4685 | sender, or if a sender other than <> is set, override with the originator's | |
4686 | login (which will get qualified below), except when checking things. */ | |
4687 | ||
4688 | if (sender_address == NULL /* No sender_address set */ | |
4689 | || /* OR */ | |
4690 | (sender_address[0] != 0 && /* Non-empty sender address, AND */ | |
34e86e20 | 4691 | !checking)) /* Not running tests, including filter tests */ |
059ec3d9 PH |
4692 | { |
4693 | sender_address = originator_login; | |
8768d548 | 4694 | f.sender_address_forced = FALSE; |
059ec3d9 PH |
4695 | sender_address_domain = 0; |
4696 | } | |
4697 | } | |
4698 | ||
4699 | /* Remember whether an untrusted caller set the sender address */ | |
4700 | ||
8768d548 | 4701 | f.sender_set_untrusted = sender_address != originator_login && !f.trusted_caller; |
059ec3d9 PH |
4702 | |
4703 | /* Ensure that the sender address is fully qualified unless it is the empty | |
4704 | address, which indicates an error message, or doesn't exist (root caller, smtp | |
4705 | interface, no -f argument). */ | |
4706 | ||
4707 | if (sender_address != NULL && sender_address[0] != 0 && | |
4708 | sender_address_domain == 0) | |
4709 | sender_address = string_sprintf("%s@%s", local_part_quote(sender_address), | |
4710 | qualify_domain_sender); | |
4711 | ||
4712 | DEBUG(D_receive) debug_printf("sender address = %s\n", sender_address); | |
4713 | ||
4714 | /* Handle a request to verify a list of addresses, or test them for delivery. | |
4715 | This must follow the setting of the sender address, since routers can be | |
4716 | predicated upon the sender. If no arguments are given, read addresses from | |
4717 | stdin. Set debug_level to at least D_v to get full output for address testing. | |
4718 | */ | |
4719 | ||
8768d548 | 4720 | if (verify_address_mode || f.address_test_mode) |
059ec3d9 PH |
4721 | { |
4722 | int exit_value = 0; | |
4723 | int flags = vopt_qualify; | |
4724 | ||
4725 | if (verify_address_mode) | |
4726 | { | |
4727 | if (!verify_as_sender) flags |= vopt_is_recipient; | |
4728 | DEBUG(D_verify) debug_print_ids(US"Verifying:"); | |
4729 | } | |
4730 | ||
4731 | else | |
4732 | { | |
4733 | flags |= vopt_is_recipient; | |
4734 | debug_selector |= D_v; | |
4735 | debug_file = stderr; | |
4736 | debug_fd = fileno(debug_file); | |
4737 | DEBUG(D_verify) debug_print_ids(US"Address testing:"); | |
4738 | } | |
4739 | ||
4740 | if (recipients_arg < argc) | |
4741 | { | |
4742 | while (recipients_arg < argc) | |
4743 | { | |
4744 | uschar *s = argv[recipients_arg++]; | |
4745 | while (*s != 0) | |
4746 | { | |
4747 | BOOL finished = FALSE; | |
4748 | uschar *ss = parse_find_address_end(s, FALSE); | |
4749 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
4750 | test_address(s, flags, &exit_value); | |
4751 | s = ss; | |
4752 | if (!finished) | |
4753 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
4754 | } | |
4755 | } | |
4756 | } | |
4757 | ||
4758 | else for (;;) | |
4759 | { | |
4760 | uschar *s = get_stdinput(NULL, NULL); | |
4761 | if (s == NULL) break; | |
4762 | test_address(s, flags, &exit_value); | |
4763 | } | |
4764 | ||
4765 | route_tidyup(); | |
9bfb7e1b | 4766 | exim_exit(exit_value, US"main"); |
059ec3d9 PH |
4767 | } |
4768 | ||
0ef732d9 PH |
4769 | /* Handle expansion checking. Either expand items on the command line, or read |
4770 | from stdin if there aren't any. If -Mset was specified, load the message so | |
328895cc PH |
4771 | that its variables can be used, but restrict this facility to admin users. |
4772 | Otherwise, if -bem was used, read a message from stdin. */ | |
059ec3d9 PH |
4773 | |
4774 | if (expansion_test) | |
4775 | { | |
03f68c52 | 4776 | dns_init(FALSE, FALSE, FALSE); |
0ef732d9 PH |
4777 | if (msg_action_arg > 0 && msg_action == MSG_LOAD) |
4778 | { | |
4779 | uschar spoolname[256]; /* Not big_buffer; used in spool_read_header() */ | |
8768d548 | 4780 | if (!f.admin_user) |
9af3c549 | 4781 | exim_fail("exim: permission denied\n"); |
0ef732d9 PH |
4782 | message_id = argv[msg_action_arg]; |
4783 | (void)string_format(spoolname, sizeof(spoolname), "%s-H", message_id); | |
789f8a4f | 4784 | if ((deliver_datafile = spool_open_datafile(message_id)) < 0) |
0ef732d9 PH |
4785 | printf ("Failed to load message datafile %s\n", message_id); |
4786 | if (spool_read_header(spoolname, TRUE, FALSE) != spool_read_OK) | |
4787 | printf ("Failed to load message %s\n", message_id); | |
4788 | } | |
4789 | ||
328895cc PH |
4790 | /* Read a test message from a file. We fudge it up to be on stdin, saving |
4791 | stdin itself for later reading of expansion strings. */ | |
4792 | ||
9650d98a | 4793 | else if (expansion_test_message) |
328895cc PH |
4794 | { |
4795 | int save_stdin = dup(0); | |
4796 | int fd = Uopen(expansion_test_message, O_RDONLY, 0); | |
4797 | if (fd < 0) | |
9af3c549 | 4798 | exim_fail("exim: failed to open %s: %s\n", expansion_test_message, |
328895cc | 4799 | strerror(errno)); |
328895cc PH |
4800 | (void) dup2(fd, 0); |
4801 | filter_test = FTEST_USER; /* Fudge to make it look like filter test */ | |
4802 | message_ended = END_NOTENDED; | |
4803 | read_message_body(receive_msg(extract_recipients)); | |
2d2b05f4 | 4804 | message_linecount += body_linecount; |
328895cc PH |
4805 | (void)dup2(save_stdin, 0); |
4806 | (void)close(save_stdin); | |
935ff400 | 4807 | clearerr(stdin); /* Required by Darwin */ |
328895cc PH |
4808 | } |
4809 | ||
9650d98a JH |
4810 | /* Only admin users may see config-file macros this way */ |
4811 | ||
8768d548 | 4812 | if (!f.admin_user) macros_user = macros = mlast = NULL; |
9650d98a | 4813 | |
328895cc PH |
4814 | /* Allow $recipients for this testing */ |
4815 | ||
8768d548 | 4816 | f.enable_dollar_recipients = TRUE; |
328895cc | 4817 | |
0ef732d9 PH |
4818 | /* Expand command line items */ |
4819 | ||
059ec3d9 | 4820 | if (recipients_arg < argc) |
059ec3d9 | 4821 | while (recipients_arg < argc) |
9650d98a | 4822 | expansion_test_line(argv[recipients_arg++]); |
059ec3d9 PH |
4823 | |
4824 | /* Read stdin */ | |
4825 | ||
4826 | else | |
4827 | { | |
1ba28e2b PP |
4828 | char *(*fn_readline)(const char *) = NULL; |
4829 | void (*fn_addhist)(const char *) = NULL; | |
9650d98a | 4830 | uschar * s; |
059ec3d9 | 4831 | |
9650d98a | 4832 | #ifdef USE_READLINE |
059ec3d9 | 4833 | void *dlhandle = set_readline(&fn_readline, &fn_addhist); |
9650d98a | 4834 | #endif |
059ec3d9 | 4835 | |
9650d98a JH |
4836 | while (s = get_stdinput(fn_readline, fn_addhist)) |
4837 | expansion_test_line(s); | |
059ec3d9 | 4838 | |
9650d98a JH |
4839 | #ifdef USE_READLINE |
4840 | if (dlhandle) dlclose(dlhandle); | |
4841 | #endif | |
059ec3d9 PH |
4842 | } |
4843 | ||
0ef732d9 PH |
4844 | /* The data file will be open after -Mset */ |
4845 | ||
4846 | if (deliver_datafile >= 0) | |
4847 | { | |
4848 | (void)close(deliver_datafile); | |
4849 | deliver_datafile = -1; | |
4850 | } | |
4851 | ||
9650d98a | 4852 | exim_exit(EXIT_SUCCESS, US"main: expansion test"); |
059ec3d9 PH |
4853 | } |
4854 | ||
4855 | ||
4856 | /* The active host name is normally the primary host name, but it can be varied | |
4857 | for hosts that want to play several parts at once. We need to ensure that it is | |
4858 | set for host checking, and for receiving messages. */ | |
4859 | ||
4860 | smtp_active_hostname = primary_hostname; | |
4861 | if (raw_active_hostname != NULL) | |
4862 | { | |
4863 | uschar *nah = expand_string(raw_active_hostname); | |
4864 | if (nah == NULL) | |
4865 | { | |
8768d548 | 4866 | if (!f.expand_string_forcedfail) |
059ec3d9 PH |
4867 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand \"%s\" " |
4868 | "(smtp_active_hostname): %s", raw_active_hostname, | |
4869 | expand_string_message); | |
4870 | } | |
4871 | else if (nah[0] != 0) smtp_active_hostname = nah; | |
4872 | } | |
4873 | ||
4874 | /* Handle host checking: this facility mocks up an incoming SMTP call from a | |
33d73e3b PH |
4875 | given IP address so that the blocking and relay configuration can be tested. |
4876 | Unless a sender_ident was set by -oMt, we discard it (the default is the | |
4877 | caller's login name). An RFC 1413 call is made only if we are running in the | |
4878 | test harness and an incoming interface and both ports are specified, because | |
4879 | there is no TCP/IP call to find the ident for. */ | |
059ec3d9 PH |
4880 | |
4881 | if (host_checking) | |
4882 | { | |
8e669ac1 | 4883 | int x[4]; |
6f0c9a4f | 4884 | int size; |
8e669ac1 | 4885 | |
33d73e3b PH |
4886 | if (!sender_ident_set) |
4887 | { | |
4888 | sender_ident = NULL; | |
8768d548 | 4889 | if (f.running_in_test_harness && sender_host_port != 0 && |
33d73e3b PH |
4890 | interface_address != NULL && interface_port != 0) |
4891 | verify_get_ident(1413); | |
4892 | } | |
8e669ac1 | 4893 | |
4c04137d | 4894 | /* In case the given address is a non-canonical IPv6 address, canonicalize |
6f0c9a4f | 4895 | it. The code works for both IPv4 and IPv6, as it happens. */ |
8e669ac1 | 4896 | |
6f0c9a4f PH |
4897 | size = host_aton(sender_host_address, x); |
4898 | sender_host_address = store_get(48); /* large enough for full IPv6 */ | |
4899 | (void)host_nmtoa(size, x, -1, sender_host_address, ':'); | |
4900 | ||
4901 | /* Now set up for testing */ | |
059ec3d9 PH |
4902 | |
4903 | host_build_sender_fullhost(); | |
4904 | smtp_input = TRUE; | |
4905 | smtp_in = stdin; | |
4906 | smtp_out = stdout; | |
8768d548 JH |
4907 | f.sender_local = FALSE; |
4908 | f.sender_host_notsocket = TRUE; | |
059ec3d9 PH |
4909 | debug_file = stderr; |
4910 | debug_fd = fileno(debug_file); | |
4911 | fprintf(stdout, "\n**** SMTP testing session as if from host %s\n" | |
4912 | "**** but without any ident (RFC 1413) callback.\n" | |
4913 | "**** This is not for real!\n\n", | |
4914 | sender_host_address); | |
4915 | ||
ce325893 | 4916 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 4917 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 4918 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
4919 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
4920 | ||
24796b8d PH |
4921 | /* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, |
4922 | because a log line has already been written for all its failure exists | |
4923 | (usually "connection refused: <reason>") and writing another one is | |
4924 | unnecessary clutter. */ | |
4925 | ||
059ec3d9 PH |
4926 | if (smtp_start_session()) |
4927 | { | |
90341c71 | 4928 | for (reset_point = store_get(0); ; store_reset(reset_point)) |
059ec3d9 | 4929 | { |
059ec3d9 PH |
4930 | if (smtp_setup_msg() <= 0) break; |
4931 | if (!receive_msg(FALSE)) break; | |
90341c71 JH |
4932 | |
4933 | return_path = sender_address = NULL; | |
4934 | dnslist_domain = dnslist_matched = NULL; | |
4935 | #ifndef DISABLE_DKIM | |
4936 | dkim_cur_signer = NULL; | |
4937 | #endif | |
4938 | acl_var_m = NULL; | |
4939 | deliver_localpart_orig = NULL; | |
4940 | deliver_domain_orig = NULL; | |
4941 | callout_address = sending_ip_address = NULL; | |
4942 | sender_rate = sender_rate_limit = sender_rate_period = NULL; | |
059ec3d9 | 4943 | } |
24796b8d | 4944 | smtp_log_no_mail(); |
059ec3d9 | 4945 | } |
9bfb7e1b | 4946 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4947 | } |
4948 | ||
4949 | ||
4950 | /* Arrange for message reception if recipients or SMTP were specified; | |
4951 | otherwise complain unless a version print (-bV) happened or this is a filter | |
98a90c36 PP |
4952 | verification test or info dump. |
4953 | In the former case, show the configuration file name. */ | |
059ec3d9 PH |
4954 | |
4955 | if (recipients_arg >= argc && !extract_recipients && !smtp_input) | |
4956 | { | |
4957 | if (version_printed) | |
4958 | { | |
36f7a17f HSHR |
4959 | if (Ustrchr(config_main_filelist, ':')) |
4960 | printf("Configuration file search path is %s\n", config_main_filelist); | |
059ec3d9 PH |
4961 | printf("Configuration file is %s\n", config_main_filename); |
4962 | return EXIT_SUCCESS; | |
4963 | } | |
81ea09ca | 4964 | |
98a90c36 PP |
4965 | if (info_flag != CMDINFO_NONE) |
4966 | { | |
4967 | show_exim_information(info_flag, info_stdout ? stdout : stderr); | |
4968 | return info_stdout ? EXIT_SUCCESS : EXIT_FAILURE; | |
4969 | } | |
4970 | ||
f05da2e8 | 4971 | if (filter_test == FTEST_NONE) |
81ea09ca | 4972 | exim_usage(called_as); |
059ec3d9 PH |
4973 | } |
4974 | ||
4975 | ||
4976 | /* If mua_wrapper is set, Exim is being used to turn an MUA that submits on the | |
4977 | standard input into an MUA that submits to a smarthost over TCP/IP. We know | |
4978 | that we are not called from inetd, because that is rejected above. The | |
4979 | following configuration settings are forced here: | |
4980 | ||
4981 | (1) Synchronous delivery (-odi) | |
4982 | (2) Errors to stderr (-oep == -oeq) | |
4983 | (3) No parallel remote delivery | |
4984 | (4) Unprivileged delivery | |
4985 | ||
4986 | We don't force overall queueing options because there are several of them; | |
4987 | instead, queueing is avoided below when mua_wrapper is set. However, we do need | |
4988 | to override any SMTP queueing. */ | |
4989 | ||
4990 | if (mua_wrapper) | |
4991 | { | |
8768d548 | 4992 | f.synchronous_delivery = TRUE; |
059ec3d9 PH |
4993 | arg_error_handling = ERRORS_STDERR; |
4994 | remote_max_parallel = 1; | |
4995 | deliver_drop_privilege = TRUE; | |
8768d548 | 4996 | f.queue_smtp = FALSE; |
059ec3d9 | 4997 | queue_smtp_domains = NULL; |
8c5d388a | 4998 | #ifdef SUPPORT_I18N |
0ec7e948 JH |
4999 | message_utf8_downconvert = -1; /* convert-if-needed */ |
5000 | #endif | |
059ec3d9 PH |
5001 | } |
5002 | ||
5003 | ||
5004 | /* Prepare to accept one or more new messages on the standard input. When a | |
5005 | message has been read, its id is returned in message_id[]. If doing immediate | |
5006 | delivery, we fork a delivery process for each received message, except for the | |
5007 | last one, where we can save a process switch. | |
5008 | ||
5009 | It is only in non-smtp mode that error_handling is allowed to be changed from | |
5010 | its default of ERRORS_SENDER by argument. (Idle thought: are any of the | |
5011 | sendmail error modes other than -oem ever actually used? Later: yes.) */ | |
5012 | ||
5013 | if (!smtp_input) error_handling = arg_error_handling; | |
5014 | ||
5015 | /* If this is an inetd call, ensure that stderr is closed to prevent panic | |
5016 | logging being sent down the socket and make an identd call to get the | |
5017 | sender_ident. */ | |
5018 | ||
8768d548 | 5019 | else if (f.is_inetd) |
059ec3d9 | 5020 | { |
1fe64dcc | 5021 | (void)fclose(stderr); |
059ec3d9 PH |
5022 | exim_nullstd(); /* Re-open to /dev/null */ |
5023 | verify_get_ident(IDENT_PORT); | |
5024 | host_build_sender_fullhost(); | |
5025 | set_process_info("handling incoming connection from %s via inetd", | |
5026 | sender_fullhost); | |
5027 | } | |
5028 | ||
5029 | /* If the sender host address has been set, build sender_fullhost if it hasn't | |
5030 | already been done (which it will have been for inetd). This caters for the | |
5031 | case when it is forced by -oMa. However, we must flag that it isn't a socket, | |
5032 | so that the test for IP options is skipped for -bs input. */ | |
5033 | ||
2d0dc929 | 5034 | if (sender_host_address && !sender_fullhost) |
059ec3d9 PH |
5035 | { |
5036 | host_build_sender_fullhost(); | |
5037 | set_process_info("handling incoming connection from %s via -oMa", | |
5038 | sender_fullhost); | |
8768d548 | 5039 | f.sender_host_notsocket = TRUE; |
059ec3d9 PH |
5040 | } |
5041 | ||
5042 | /* Otherwise, set the sender host as unknown except for inetd calls. This | |
5043 | prevents host checking in the case of -bs not from inetd and also for -bS. */ | |
5044 | ||
8768d548 | 5045 | else if (!f.is_inetd) f.sender_host_unknown = TRUE; |
059ec3d9 PH |
5046 | |
5047 | /* If stdout does not exist, then dup stdin to stdout. This can happen | |
5048 | if exim is started from inetd. In this case fd 0 will be set to the socket, | |
5049 | but fd 1 will not be set. This also happens for passed SMTP channels. */ | |
5050 | ||
1fe64dcc | 5051 | if (fstat(1, &statbuf) < 0) (void)dup2(0, 1); |
059ec3d9 | 5052 | |
273f34d0 PH |
5053 | /* Set up the incoming protocol name and the state of the program. Root is |
5054 | allowed to force received protocol via the -oMr option above. If we have come | |
5055 | via inetd, the process info has already been set up. We don't set | |
5056 | received_protocol here for smtp input, as it varies according to | |
5057 | batch/HELO/EHLO/AUTH/TLS. */ | |
059ec3d9 PH |
5058 | |
5059 | if (smtp_input) | |
5060 | { | |
8768d548 | 5061 | if (!f.is_inetd) set_process_info("accepting a local %sSMTP message from <%s>", |
273f34d0 PH |
5062 | smtp_batched_input? "batched " : "", |
5063 | (sender_address!= NULL)? sender_address : originator_login); | |
059ec3d9 PH |
5064 | } |
5065 | else | |
5066 | { | |
90341c71 JH |
5067 | int old_pool = store_pool; |
5068 | store_pool = POOL_PERM; | |
5069 | if (!received_protocol) | |
059ec3d9 | 5070 | received_protocol = string_sprintf("local%s", called_as); |
90341c71 | 5071 | store_pool = old_pool; |
059ec3d9 PH |
5072 | set_process_info("accepting a local non-SMTP message from <%s>", |
5073 | sender_address); | |
5074 | } | |
5075 | ||
8669f003 PH |
5076 | /* Initialize the session_local_queue-only flag (this will be ignored if |
5077 | mua_wrapper is set) */ | |
059ec3d9 PH |
5078 | |
5079 | queue_check_only(); | |
8669f003 | 5080 | session_local_queue_only = queue_only; |
059ec3d9 PH |
5081 | |
5082 | /* For non-SMTP and for batched SMTP input, check that there is enough space on | |
5083 | the spool if so configured. On failure, we must not attempt to send an error | |
5084 | message! (For interactive SMTP, the check happens at MAIL FROM and an SMTP | |
5085 | error code is given.) */ | |
5086 | ||
5087 | if ((!smtp_input || smtp_batched_input) && !receive_check_fs(0)) | |
9af3c549 | 5088 | exim_fail("exim: insufficient disk space\n"); |
059ec3d9 | 5089 | |
273f34d0 PH |
5090 | /* If this is smtp input of any kind, real or batched, handle the start of the |
5091 | SMTP session. | |
24796b8d PH |
5092 | |
5093 | NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, | |
5094 | because a log line has already been written for all its failure exists | |
5095 | (usually "connection refused: <reason>") and writing another one is | |
5096 | unnecessary clutter. */ | |
059ec3d9 PH |
5097 | |
5098 | if (smtp_input) | |
5099 | { | |
5100 | smtp_in = stdin; | |
5101 | smtp_out = stdout; | |
ce325893 | 5102 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 5103 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 5104 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
5105 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
5106 | if (!smtp_start_session()) | |
5107 | { | |
5108 | mac_smtp_fflush(); | |
9bfb7e1b | 5109 | exim_exit(EXIT_SUCCESS, US"smtp_start toplevel"); |
059ec3d9 PH |
5110 | } |
5111 | } | |
5112 | ||
45b91596 | 5113 | /* Otherwise, set up the input size limit here. */ |
059ec3d9 PH |
5114 | |
5115 | else | |
5116 | { | |
d45b1de8 | 5117 | thismessage_size_limit = expand_string_integer(message_size_limit, TRUE); |
57cc2785 | 5118 | if (expand_string_message) |
059ec3d9 PH |
5119 | if (thismessage_size_limit == -1) |
5120 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand " | |
5121 | "message_size_limit: %s", expand_string_message); | |
5122 | else | |
5123 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "invalid value for " | |
5124 | "message_size_limit: %s", expand_string_message); | |
059ec3d9 PH |
5125 | } |
5126 | ||
5127 | /* Loop for several messages when reading SMTP input. If we fork any child | |
5128 | processes, we don't want to wait for them unless synchronous delivery is | |
5129 | requested, so set SIGCHLD to SIG_IGN in that case. This is not necessarily the | |
5130 | same as SIG_DFL, despite the fact that documentation often lists the default as | |
5131 | "ignore". This is a confusing area. This is what I know: | |
5132 | ||
5133 | At least on some systems (e.g. Solaris), just setting SIG_IGN causes child | |
5134 | processes that complete simply to go away without ever becoming defunct. You | |
5135 | can't then wait for them - but we don't want to wait for them in the | |
5136 | non-synchronous delivery case. However, this behaviour of SIG_IGN doesn't | |
5137 | happen for all OS (e.g. *BSD is different). | |
5138 | ||
5139 | But that's not the end of the story. Some (many? all?) systems have the | |
5140 | SA_NOCLDWAIT option for sigaction(). This requests the behaviour that Solaris | |
5141 | has by default, so it seems that the difference is merely one of default | |
5142 | (compare restarting vs non-restarting signals). | |
5143 | ||
5144 | To cover all cases, Exim sets SIG_IGN with SA_NOCLDWAIT here if it can. If not, | |
5145 | it just sets SIG_IGN. To be on the safe side it also calls waitpid() at the end | |
5146 | of the loop below. Paranoia rules. | |
5147 | ||
5148 | February 2003: That's *still* not the end of the story. There are now versions | |
5149 | of Linux (where SIG_IGN does work) that are picky. If, having set SIG_IGN, a | |
5150 | process then calls waitpid(), a grumble is written to the system log, because | |
5151 | this is logically inconsistent. In other words, it doesn't like the paranoia. | |
4c04137d | 5152 | As a consequence of this, the waitpid() below is now excluded if we are sure |
059ec3d9 PH |
5153 | that SIG_IGN works. */ |
5154 | ||
8768d548 | 5155 | if (!f.synchronous_delivery) |
059ec3d9 PH |
5156 | { |
5157 | #ifdef SA_NOCLDWAIT | |
5158 | struct sigaction act; | |
5159 | act.sa_handler = SIG_IGN; | |
5160 | sigemptyset(&(act.sa_mask)); | |
5161 | act.sa_flags = SA_NOCLDWAIT; | |
5162 | sigaction(SIGCHLD, &act, NULL); | |
5163 | #else | |
5164 | signal(SIGCHLD, SIG_IGN); | |
5165 | #endif | |
5166 | } | |
5167 | ||
5168 | /* Save the current store pool point, for resetting at the start of | |
5169 | each message, and save the real sender address, if any. */ | |
5170 | ||
5171 | reset_point = store_get(0); | |
5172 | real_sender_address = sender_address; | |
5173 | ||
5174 | /* Loop to receive messages; receive_msg() returns TRUE if there are more | |
5175 | messages to be read (SMTP input), or FALSE otherwise (not SMTP, or SMTP channel | |
5176 | collapsed). */ | |
5177 | ||
5178 | while (more) | |
5179 | { | |
059ec3d9 PH |
5180 | message_id[0] = 0; |
5181 | ||
273f34d0 PH |
5182 | /* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP |
5183 | input and build the recipients list, before calling receive_msg() to read the | |
5184 | message proper. Whatever sender address is given in the SMTP transaction is | |
5185 | often ignored for local senders - we use the actual sender, which is normally | |
5186 | either the underlying user running this process or a -f argument provided by | |
5187 | a trusted caller. It is saved in real_sender_address. The test for whether to | |
5188 | accept the SMTP sender is encapsulated in receive_check_set_sender(). */ | |
059ec3d9 PH |
5189 | |
5190 | if (smtp_input) | |
5191 | { | |
5192 | int rc; | |
5193 | if ((rc = smtp_setup_msg()) > 0) | |
5194 | { | |
5195 | if (real_sender_address != NULL && | |
5196 | !receive_check_set_sender(sender_address)) | |
5197 | { | |
5198 | sender_address = raw_sender = real_sender_address; | |
5199 | sender_address_unrewritten = NULL; | |
5200 | } | |
273f34d0 PH |
5201 | |
5202 | /* For batched SMTP, we have to run the acl_not_smtp_start ACL, since it | |
5203 | isn't really SMTP, so no other ACL will run until the acl_not_smtp one at | |
5204 | the very end. The result of the ACL is ignored (as for other non-SMTP | |
5205 | messages). It is run for its potential side effects. */ | |
5206 | ||
5207 | if (smtp_batched_input && acl_not_smtp_start != NULL) | |
5208 | { | |
5209 | uschar *user_msg, *log_msg; | |
8768d548 | 5210 | f.enable_dollar_recipients = TRUE; |
273f34d0 PH |
5211 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, |
5212 | &user_msg, &log_msg); | |
8768d548 | 5213 | f.enable_dollar_recipients = FALSE; |
273f34d0 PH |
5214 | } |
5215 | ||
5216 | /* Now get the data for the message */ | |
5217 | ||
059ec3d9 PH |
5218 | more = receive_msg(extract_recipients); |
5219 | if (message_id[0] == 0) | |
5220 | { | |
57cc2785 | 5221 | cancel_cutthrough_connection(TRUE, US"receive dropped"); |
90341c71 | 5222 | if (more) goto moreloop; |
b4ed4da0 | 5223 | smtp_log_no_mail(); /* Log no mail if configured */ |
9bfb7e1b | 5224 | exim_exit(EXIT_FAILURE, US"receive toplevel"); |
059ec3d9 PH |
5225 | } |
5226 | } | |
b4ed4da0 PH |
5227 | else |
5228 | { | |
57cc2785 | 5229 | cancel_cutthrough_connection(TRUE, US"message setup dropped"); |
b4ed4da0 | 5230 | smtp_log_no_mail(); /* Log no mail if configured */ |
9bfb7e1b | 5231 | exim_exit(rc ? EXIT_FAILURE : EXIT_SUCCESS, US"msg setup toplevel"); |
b4ed4da0 | 5232 | } |
059ec3d9 PH |
5233 | } |
5234 | ||
5235 | /* In the non-SMTP case, we have all the information from the command | |
5236 | line, but must process it in case it is in the more general RFC822 | |
5237 | format, and in any case, to detect syntax errors. Also, it appears that | |
5238 | the use of comma-separated lists as single arguments is common, so we | |
5239 | had better support them. */ | |
5240 | ||
5241 | else | |
5242 | { | |
059ec3d9 PH |
5243 | int rcount = 0; |
5244 | int count = argc - recipients_arg; | |
5245 | uschar **list = argv + recipients_arg; | |
eb2c0248 | 5246 | |
69358f02 | 5247 | /* These options cannot be changed dynamically for non-SMTP messages */ |
eb2c0248 | 5248 | |
8768d548 JH |
5249 | f.active_local_sender_retain = local_sender_retain; |
5250 | f.active_local_from_check = local_from_check; | |
059ec3d9 PH |
5251 | |
5252 | /* Save before any rewriting */ | |
5253 | ||
5254 | raw_sender = string_copy(sender_address); | |
5255 | ||
5256 | /* Loop for each argument */ | |
5257 | ||
d7978c0f | 5258 | for (int i = 0; i < count; i++) |
059ec3d9 PH |
5259 | { |
5260 | int start, end, domain; | |
5261 | uschar *errmess; | |
5262 | uschar *s = list[i]; | |
5263 | ||
5264 | /* Loop for each comma-separated address */ | |
5265 | ||
5266 | while (*s != 0) | |
5267 | { | |
5268 | BOOL finished = FALSE; | |
5269 | uschar *recipient; | |
5270 | uschar *ss = parse_find_address_end(s, FALSE); | |
5271 | ||
5272 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
5273 | ||
5274 | /* Check max recipients - if -t was used, these aren't recipients */ | |
5275 | ||
5276 | if (recipients_max > 0 && ++rcount > recipients_max && | |
5277 | !extract_recipients) | |
059ec3d9 PH |
5278 | if (error_handling == ERRORS_STDERR) |
5279 | { | |
5280 | fprintf(stderr, "exim: too many recipients\n"); | |
9bfb7e1b | 5281 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
5282 | } |
5283 | else | |
059ec3d9 PH |
5284 | return |
5285 | moan_to_sender(ERRMESS_TOOMANYRECIP, NULL, NULL, stdin, TRUE)? | |
5286 | errors_sender_rc : EXIT_FAILURE; | |
059ec3d9 | 5287 | |
8c5d388a | 5288 | #ifdef SUPPORT_I18N |
250b6871 JH |
5289 | { |
5290 | BOOL b = allow_utf8_domains; | |
5291 | allow_utf8_domains = TRUE; | |
5292 | #endif | |
059ec3d9 PH |
5293 | recipient = |
5294 | parse_extract_address(s, &errmess, &start, &end, &domain, FALSE); | |
5295 | ||
8c5d388a | 5296 | #ifdef SUPPORT_I18N |
250b6871 JH |
5297 | if (string_is_utf8(recipient)) |
5298 | message_smtputf8 = TRUE; | |
5299 | else | |
5300 | allow_utf8_domains = b; | |
5301 | } | |
5302 | #endif | |
8768d548 | 5303 | if (domain == 0 && !f.allow_unqualified_recipient) |
059ec3d9 PH |
5304 | { |
5305 | recipient = NULL; | |
5306 | errmess = US"unqualified recipient address not allowed"; | |
5307 | } | |
5308 | ||
5309 | if (recipient == NULL) | |
5310 | { | |
5311 | if (error_handling == ERRORS_STDERR) | |
5312 | { | |
5313 | fprintf(stderr, "exim: bad recipient address \"%s\": %s\n", | |
5314 | string_printing(list[i]), errmess); | |
9bfb7e1b | 5315 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
5316 | } |
5317 | else | |
5318 | { | |
5319 | error_block eblock; | |
5320 | eblock.next = NULL; | |
5321 | eblock.text1 = string_printing(list[i]); | |
5322 | eblock.text2 = errmess; | |
5323 | return | |
5324 | moan_to_sender(ERRMESS_BADARGADDRESS, &eblock, NULL, stdin, TRUE)? | |
5325 | errors_sender_rc : EXIT_FAILURE; | |
5326 | } | |
5327 | } | |
5328 | ||
5329 | receive_add_recipient(recipient, -1); | |
5330 | s = ss; | |
5331 | if (!finished) | |
5332 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
5333 | } | |
5334 | } | |
5335 | ||
5336 | /* Show the recipients when debugging */ | |
5337 | ||
5338 | DEBUG(D_receive) | |
5339 | { | |
059ec3d9 PH |
5340 | if (sender_address != NULL) debug_printf("Sender: %s\n", sender_address); |
5341 | if (recipients_list != NULL) | |
5342 | { | |
5343 | debug_printf("Recipients:\n"); | |
d7978c0f | 5344 | for (int i = 0; i < recipients_count; i++) |
059ec3d9 PH |
5345 | debug_printf(" %s\n", recipients_list[i].address); |
5346 | } | |
5347 | } | |
5348 | ||
45b91596 PH |
5349 | /* Run the acl_not_smtp_start ACL if required. The result of the ACL is |
5350 | ignored; rejecting here would just add complication, and it can just as | |
5351 | well be done later. Allow $recipients to be visible in the ACL. */ | |
5352 | ||
9cd319d9 | 5353 | if (acl_not_smtp_start) |
45b91596 PH |
5354 | { |
5355 | uschar *user_msg, *log_msg; | |
8768d548 | 5356 | f.enable_dollar_recipients = TRUE; |
45b91596 PH |
5357 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, |
5358 | &user_msg, &log_msg); | |
8768d548 | 5359 | f.enable_dollar_recipients = FALSE; |
45b91596 PH |
5360 | } |
5361 | ||
9cd319d9 JH |
5362 | /* Pause for a while waiting for input. If none received in that time, |
5363 | close the logfile, if we had one open; then if we wait for a long-running | |
5364 | datasource (months, in one use-case) log rotation will not leave us holding | |
5365 | the file copy. */ | |
5366 | ||
5367 | if (!receive_timeout) | |
5368 | { | |
f2ed27cf | 5369 | struct timeval t = { .tv_sec = 30*60, .tv_usec = 0 }; /* 30 minutes */ |
9cd319d9 JH |
5370 | fd_set r; |
5371 | ||
5372 | FD_ZERO(&r); FD_SET(0, &r); | |
5373 | if (select(1, &r, NULL, NULL, &t) == 0) mainlog_close(); | |
5374 | } | |
5375 | ||
f05da2e8 PH |
5376 | /* Read the data for the message. If filter_test is not FTEST_NONE, this |
5377 | will just read the headers for the message, and not write anything onto the | |
5378 | spool. */ | |
059ec3d9 PH |
5379 | |
5380 | message_ended = END_NOTENDED; | |
5381 | more = receive_msg(extract_recipients); | |
5382 | ||
5383 | /* more is always FALSE here (not SMTP message) when reading a message | |
5384 | for real; when reading the headers of a message for filter testing, | |
5385 | it is TRUE if the headers were terminated by '.' and FALSE otherwise. */ | |
5386 | ||
9bfb7e1b | 5387 | if (message_id[0] == 0) exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
5388 | } /* Non-SMTP message reception */ |
5389 | ||
5390 | /* If this is a filter testing run, there are headers in store, but | |
5391 | no message on the spool. Run the filtering code in testing mode, setting | |
5392 | the domain to the qualify domain and the local part to the current user, | |
5393 | unless they have been set by options. The prefix and suffix are left unset | |
5394 | unless specified. The the return path is set to to the sender unless it has | |
5395 | already been set from a return-path header in the message. */ | |
5396 | ||
f05da2e8 | 5397 | if (filter_test != FTEST_NONE) |
059ec3d9 PH |
5398 | { |
5399 | deliver_domain = (ftest_domain != NULL)? | |
5400 | ftest_domain : qualify_domain_recipient; | |
5401 | deliver_domain_orig = deliver_domain; | |
5402 | deliver_localpart = (ftest_localpart != NULL)? | |
5403 | ftest_localpart : originator_login; | |
5404 | deliver_localpart_orig = deliver_localpart; | |
5405 | deliver_localpart_prefix = ftest_prefix; | |
5406 | deliver_localpart_suffix = ftest_suffix; | |
5407 | deliver_home = originator_home; | |
5408 | ||
5409 | if (return_path == NULL) | |
5410 | { | |
5411 | printf("Return-path copied from sender\n"); | |
5412 | return_path = string_copy(sender_address); | |
5413 | } | |
5414 | else | |
059ec3d9 | 5415 | printf("Return-path = %s\n", (return_path[0] == 0)? US"<>" : return_path); |
059ec3d9 PH |
5416 | printf("Sender = %s\n", (sender_address[0] == 0)? US"<>" : sender_address); |
5417 | ||
5418 | receive_add_recipient( | |
5419 | string_sprintf("%s%s%s@%s", | |
5420 | (ftest_prefix == NULL)? US"" : ftest_prefix, | |
5421 | deliver_localpart, | |
5422 | (ftest_suffix == NULL)? US"" : ftest_suffix, | |
5423 | deliver_domain), -1); | |
5424 | ||
5425 | printf("Recipient = %s\n", recipients_list[0].address); | |
5426 | if (ftest_prefix != NULL) printf("Prefix = %s\n", ftest_prefix); | |
5427 | if (ftest_suffix != NULL) printf("Suffix = %s\n", ftest_suffix); | |
5428 | ||
1ac6b2e7 JH |
5429 | if (chdir("/")) /* Get away from wherever the user is running this from */ |
5430 | { | |
5431 | DEBUG(D_receive) debug_printf("chdir(\"/\") failed\n"); | |
9bfb7e1b | 5432 | exim_exit(EXIT_FAILURE, US"main"); |
1ac6b2e7 | 5433 | } |
8e669ac1 PH |
5434 | |
5435 | /* Now we run either a system filter test, or a user filter test, or both. | |
5436 | In the latter case, headers added by the system filter will persist and be | |
5437 | available to the user filter. We need to copy the filter variables | |
f05da2e8 | 5438 | explicitly. */ |
8e669ac1 | 5439 | |
f05da2e8 | 5440 | if ((filter_test & FTEST_SYSTEM) != 0) |
f05da2e8 | 5441 | if (!filter_runtest(filter_sfd, filter_test_sfile, TRUE, more)) |
9bfb7e1b | 5442 | exim_exit(EXIT_FAILURE, US"main"); |
8e669ac1 | 5443 | |
f05da2e8 | 5444 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); |
8e669ac1 | 5445 | |
f05da2e8 | 5446 | if ((filter_test & FTEST_USER) != 0) |
f05da2e8 | 5447 | if (!filter_runtest(filter_ufd, filter_test_ufile, FALSE, more)) |
9bfb7e1b | 5448 | exim_exit(EXIT_FAILURE, US"main"); |
8e669ac1 | 5449 | |
9bfb7e1b | 5450 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
5451 | } |
5452 | ||
5453 | /* Else act on the result of message reception. We should not get here unless | |
8669f003 PH |
5454 | message_id[0] is non-zero. If queue_only is set, session_local_queue_only |
5455 | will be TRUE. If it is not, check on the number of messages received in this | |
5456 | connection. */ | |
5457 | ||
5458 | if (!session_local_queue_only && | |
5459 | smtp_accept_queue_per_connection > 0 && | |
5460 | receive_messagecount > smtp_accept_queue_per_connection) | |
059ec3d9 | 5461 | { |
8669f003 PH |
5462 | session_local_queue_only = TRUE; |
5463 | queue_only_reason = 2; | |
5464 | } | |
5465 | ||
5466 | /* Initialize local_queue_only from session_local_queue_only. If it is false, | |
5467 | and queue_only_load is set, check that the load average is below it. If it is | |
5468 | not, set local_queue_only TRUE. If queue_only_load_latch is true (the | |
5469 | default), we put the whole session into queue_only mode. It then remains this | |
5470 | way for any subsequent messages on the same SMTP connection. This is a | |
5471 | deliberate choice; even though the load average may fall, it doesn't seem | |
5472 | right to deliver later messages on the same call when not delivering earlier | |
5473 | ones. However, there are odd cases where this is not wanted, so this can be | |
5474 | changed by setting queue_only_load_latch false. */ | |
5475 | ||
5476 | local_queue_only = session_local_queue_only; | |
5477 | if (!local_queue_only && queue_only_load >= 0) | |
5478 | { | |
5479 | local_queue_only = (load_average = OS_GETLOADAVG()) > queue_only_load; | |
5480 | if (local_queue_only) | |
059ec3d9 | 5481 | { |
8669f003 PH |
5482 | queue_only_reason = 3; |
5483 | if (queue_only_load_latch) session_local_queue_only = TRUE; | |
059ec3d9 PH |
5484 | } |
5485 | } | |
5486 | ||
5487 | /* If running as an MUA wrapper, all queueing options and freezing options | |
5488 | are ignored. */ | |
5489 | ||
5490 | if (mua_wrapper) | |
8768d548 | 5491 | local_queue_only = f.queue_only_policy = f.deliver_freeze = FALSE; |
059ec3d9 PH |
5492 | |
5493 | /* Log the queueing here, when it will get a message id attached, but | |
5494 | not if queue_only is set (case 0). Case 1 doesn't happen here (too many | |
5495 | connections). */ | |
5496 | ||
57cc2785 | 5497 | if (local_queue_only) |
059ec3d9 | 5498 | { |
57cc2785 JH |
5499 | cancel_cutthrough_connection(TRUE, US"no delivery; queueing"); |
5500 | switch(queue_only_reason) | |
5501 | { | |
5502 | case 2: | |
5503 | log_write(L_delay_delivery, | |
5504 | LOG_MAIN, "no immediate delivery: more than %d messages " | |
5505 | "received in one connection", smtp_accept_queue_per_connection); | |
5506 | break; | |
059ec3d9 | 5507 | |
57cc2785 JH |
5508 | case 3: |
5509 | log_write(L_delay_delivery, | |
5510 | LOG_MAIN, "no immediate delivery: load average %.2f", | |
5511 | (double)load_average/1000.0); | |
5512 | break; | |
5513 | } | |
059ec3d9 PH |
5514 | } |
5515 | ||
8768d548 | 5516 | else if (f.queue_only_policy || f.deliver_freeze) |
57cc2785 JH |
5517 | cancel_cutthrough_connection(TRUE, US"no delivery; queueing"); |
5518 | ||
059ec3d9 PH |
5519 | /* Else do the delivery unless the ACL or local_scan() called for queue only |
5520 | or froze the message. Always deliver in a separate process. A fork failure is | |
5521 | not a disaster, as the delivery will eventually happen on a subsequent queue | |
eb2c0248 PH |
5522 | run. The search cache must be tidied before the fork, as the parent will |
5523 | do it before exiting. The child will trigger a lookup failure and | |
5524 | thereby defer the delivery if it tries to use (for example) a cached ldap | |
5525 | connection that the parent has called unbind on. */ | |
059ec3d9 | 5526 | |
57cc2785 | 5527 | else |
059ec3d9 PH |
5528 | { |
5529 | pid_t pid; | |
eb2c0248 PH |
5530 | search_tidyup(); |
5531 | ||
059ec3d9 PH |
5532 | if ((pid = fork()) == 0) |
5533 | { | |
5534 | int rc; | |
5535 | close_unwanted(); /* Close unwanted file descriptors and TLS */ | |
5536 | exim_nullstd(); /* Ensure std{in,out,err} exist */ | |
5537 | ||
5538 | /* Re-exec Exim if we need to regain privilege (note: in mua_wrapper | |
5539 | mode, deliver_drop_privilege is forced TRUE). */ | |
5540 | ||
5541 | if (geteuid() != root_uid && !deliver_drop_privilege && !unprivileged) | |
5542 | { | |
57cc2785 | 5543 | delivery_re_exec(CEE_EXEC_EXIT); |
059ec3d9 PH |
5544 | /* Control does not return here. */ |
5545 | } | |
5546 | ||
5547 | /* No need to re-exec */ | |
5548 | ||
5549 | rc = deliver_message(message_id, FALSE, FALSE); | |
5550 | search_tidyup(); | |
5551 | _exit((!mua_wrapper || rc == DELIVER_MUA_SUCCEEDED)? | |
5552 | EXIT_SUCCESS : EXIT_FAILURE); | |
5553 | } | |
5554 | ||
5555 | if (pid < 0) | |
5556 | { | |
57cc2785 | 5557 | cancel_cutthrough_connection(TRUE, US"delivery fork failed"); |
059ec3d9 PH |
5558 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fork automatic delivery " |
5559 | "process: %s", strerror(errno)); | |
5560 | } | |
57cc2785 JH |
5561 | else |
5562 | { | |
5563 | release_cutthrough_connection(US"msg passed for delivery"); | |
059ec3d9 | 5564 | |
57cc2785 JH |
5565 | /* In the parent, wait if synchronous delivery is required. This will |
5566 | always be the case in MUA wrapper mode. */ | |
059ec3d9 | 5567 | |
8768d548 | 5568 | if (f.synchronous_delivery) |
57cc2785 JH |
5569 | { |
5570 | int status; | |
5571 | while (wait(&status) != pid); | |
5572 | if ((status & 0x00ff) != 0) | |
5573 | log_write(0, LOG_MAIN|LOG_PANIC, | |
5574 | "process %d crashed with signal %d while delivering %s", | |
5575 | (int)pid, status & 0x00ff, message_id); | |
9bfb7e1b | 5576 | if (mua_wrapper && (status & 0xffff) != 0) exim_exit(EXIT_FAILURE, US"main"); |
57cc2785 | 5577 | } |
059ec3d9 PH |
5578 | } |
5579 | } | |
5580 | ||
5581 | /* The loop will repeat if more is TRUE. If we do not know know that the OS | |
5582 | automatically reaps children (see comments above the loop), clear away any | |
5583 | finished subprocesses here, in case there are lots of messages coming in | |
5584 | from the same source. */ | |
5585 | ||
5586 | #ifndef SIG_IGN_WORKS | |
5587 | while (waitpid(-1, NULL, WNOHANG) > 0); | |
5588 | #endif | |
90341c71 JH |
5589 | |
5590 | moreloop: | |
5591 | return_path = sender_address = NULL; | |
5592 | authenticated_sender = NULL; | |
5593 | deliver_localpart_orig = NULL; | |
5594 | deliver_domain_orig = NULL; | |
5595 | deliver_host = deliver_host_address = NULL; | |
5596 | dnslist_domain = dnslist_matched = NULL; | |
ac4824af | 5597 | #ifdef WITH_CONTENT_SCAN |
90341c71 | 5598 | malware_name = NULL; |
ac4824af | 5599 | #endif |
90341c71 JH |
5600 | callout_address = NULL; |
5601 | sending_ip_address = NULL; | |
5602 | acl_var_m = NULL; | |
d7978c0f | 5603 | for(int i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL; |
90341c71 JH |
5604 | |
5605 | store_reset(reset_point); | |
059ec3d9 PH |
5606 | } |
5607 | ||
9bfb7e1b | 5608 | exim_exit(EXIT_SUCCESS, US"main"); /* Never returns */ |
059ec3d9 PH |
5609 | return 0; /* To stop compiler warning */ |
5610 | } | |
5611 | ||
2cee425a | 5612 | |
059ec3d9 | 5613 | /* End of exim.c */ |