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, | |
059ec3d9 PH |
143 | PCRE_EOPT | options, ovector, sizeof(ovector)/sizeof(int)); |
144 | BOOL yield = n >= 0; | |
145 | if (n == 0) n = EXPAND_MAXN + 1; | |
146 | if (yield) | |
147 | { | |
148 | int nn; | |
149 | expand_nmax = (setup < 0)? 0 : setup + 1; | |
150 | for (nn = (setup < 0)? 0 : 2; nn < n*2; nn += 2) | |
151 | { | |
1dc92d5a | 152 | expand_nstring[expand_nmax] = s + ovector[nn]; |
059ec3d9 PH |
153 | expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn]; |
154 | } | |
155 | expand_nmax--; | |
156 | } | |
157 | return yield; | |
158 | } | |
159 | ||
160 | ||
161 | ||
162 | ||
921b12ca TF |
163 | /************************************************* |
164 | * Set up processing details * | |
165 | *************************************************/ | |
166 | ||
167 | /* Save a text string for dumping when SIGUSR1 is received. | |
168 | Do checks for overruns. | |
169 | ||
170 | Arguments: format and arguments, as for printf() | |
171 | Returns: nothing | |
172 | */ | |
173 | ||
174 | void | |
175 | set_process_info(const char *format, ...) | |
176 | { | |
92b0827a | 177 | int len = sprintf(CS process_info, "%5d ", (int)getpid()); |
921b12ca | 178 | va_list ap; |
921b12ca TF |
179 | va_start(ap, format); |
180 | if (!string_vformat(process_info + len, PROCESS_INFO_SIZE - len - 2, format, ap)) | |
181 | Ustrcpy(process_info + len, "**** string overflowed buffer ****"); | |
182 | len = Ustrlen(process_info); | |
183 | process_info[len+0] = '\n'; | |
184 | process_info[len+1] = '\0'; | |
185 | process_info_len = len + 1; | |
186 | DEBUG(D_process_info) debug_printf("set_process_info: %s", process_info); | |
187 | va_end(ap); | |
188 | } | |
189 | ||
830832c9 HSHR |
190 | /*********************************************** |
191 | * Handler for SIGTERM * | |
192 | ***********************************************/ | |
921b12ca | 193 | |
830832c9 HSHR |
194 | static void |
195 | term_handler(int sig) | |
196 | { | |
197 | exit(1); | |
198 | } | |
921b12ca TF |
199 | |
200 | ||
059ec3d9 PH |
201 | /************************************************* |
202 | * Handler for SIGUSR1 * | |
203 | *************************************************/ | |
204 | ||
205 | /* SIGUSR1 causes any exim process to write to the process log details of | |
206 | what it is currently doing. It will only be used if the OS is capable of | |
207 | setting up a handler that causes automatic restarting of any system call | |
208 | that is in progress at the time. | |
209 | ||
921b12ca TF |
210 | This function takes care to be signal-safe. |
211 | ||
059ec3d9 PH |
212 | Argument: the signal number (SIGUSR1) |
213 | Returns: nothing | |
214 | */ | |
215 | ||
216 | static void | |
217 | usr1_handler(int sig) | |
218 | { | |
921b12ca TF |
219 | int fd; |
220 | ||
221 | os_restarting_signal(sig, usr1_handler); | |
222 | ||
cab0c277 | 223 | if ((fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE)) < 0) |
921b12ca TF |
224 | { |
225 | /* If we are already running as the Exim user, try to create it in the | |
226 | current process (assuming spool_directory exists). Otherwise, if we are | |
227 | root, do the creation in an exim:exim subprocess. */ | |
228 | ||
229 | int euid = geteuid(); | |
230 | if (euid == exim_uid) | |
231 | fd = Uopen(process_log_path, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE); | |
232 | else if (euid == root_uid) | |
233 | fd = log_create_as_exim(process_log_path); | |
234 | } | |
235 | ||
236 | /* If we are neither exim nor root, or if we failed to create the log file, | |
237 | give up. There is not much useful we can do with errors, since we don't want | |
238 | to disrupt whatever is going on outside the signal handler. */ | |
239 | ||
240 | if (fd < 0) return; | |
241 | ||
2f21487f | 242 | (void)write(fd, process_info, process_info_len); |
921b12ca | 243 | (void)close(fd); |
059ec3d9 PH |
244 | } |
245 | ||
246 | ||
247 | ||
248 | /************************************************* | |
249 | * Timeout handler * | |
250 | *************************************************/ | |
251 | ||
252 | /* This handler is enabled most of the time that Exim is running. The handler | |
253 | doesn't actually get used unless alarm() has been called to set a timer, to | |
254 | place a time limit on a system call of some kind. When the handler is run, it | |
255 | re-enables itself. | |
256 | ||
257 | There are some other SIGALRM handlers that are used in special cases when more | |
258 | than just a flag setting is required; for example, when reading a message's | |
259 | input. These are normally set up in the code module that uses them, and the | |
260 | SIGALRM handler is reset to this one afterwards. | |
261 | ||
262 | Argument: the signal value (SIGALRM) | |
263 | Returns: nothing | |
264 | */ | |
265 | ||
266 | void | |
267 | sigalrm_handler(int sig) | |
268 | { | |
269 | sig = sig; /* Keep picky compilers happy */ | |
270 | sigalrm_seen = TRUE; | |
271 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
272 | } | |
273 | ||
274 | ||
275 | ||
276 | /************************************************* | |
277 | * Sleep for a fractional time interval * | |
278 | *************************************************/ | |
279 | ||
280 | /* This function is called by millisleep() and exim_wait_tick() to wait for a | |
281 | period of time that may include a fraction of a second. The coding is somewhat | |
eb2c0248 PH |
282 | tedious. We do not expect setitimer() ever to fail, but if it does, the process |
283 | will wait for ever, so we panic in this instance. (There was a case of this | |
284 | when a bug in a function that calls milliwait() caused it to pass invalid data. | |
7086e875 | 285 | That's when I added the check. :-) |
059ec3d9 | 286 | |
0f8ba377 JH |
287 | We assume it to be not worth sleeping for under 100us; this value will |
288 | require revisiting as hardware advances. This avoids the issue of | |
289 | a zero-valued timer setting meaning "never fire". | |
290 | ||
059ec3d9 PH |
291 | Argument: an itimerval structure containing the interval |
292 | Returns: nothing | |
293 | */ | |
294 | ||
295 | static void | |
296 | milliwait(struct itimerval *itval) | |
297 | { | |
298 | sigset_t sigmask; | |
299 | sigset_t old_sigmask; | |
0f8ba377 JH |
300 | |
301 | if (itval->it_value.tv_usec < 100 && itval->it_value.tv_sec == 0) | |
302 | return; | |
059ec3d9 PH |
303 | (void)sigemptyset(&sigmask); /* Empty mask */ |
304 | (void)sigaddset(&sigmask, SIGALRM); /* Add SIGALRM */ | |
305 | (void)sigprocmask(SIG_BLOCK, &sigmask, &old_sigmask); /* Block SIGALRM */ | |
7086e875 | 306 | if (setitimer(ITIMER_REAL, itval, NULL) < 0) /* Start timer */ |
eb2c0248 PH |
307 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
308 | "setitimer() failed: %s", strerror(errno)); | |
059ec3d9 PH |
309 | (void)sigfillset(&sigmask); /* All signals */ |
310 | (void)sigdelset(&sigmask, SIGALRM); /* Remove SIGALRM */ | |
311 | (void)sigsuspend(&sigmask); /* Until SIGALRM */ | |
312 | (void)sigprocmask(SIG_SETMASK, &old_sigmask, NULL); /* Restore mask */ | |
313 | } | |
314 | ||
315 | ||
316 | ||
317 | ||
318 | /************************************************* | |
319 | * Millisecond sleep function * | |
320 | *************************************************/ | |
321 | ||
322 | /* The basic sleep() function has a granularity of 1 second, which is too rough | |
323 | in some cases - for example, when using an increasing delay to slow down | |
324 | spammers. | |
325 | ||
326 | Argument: number of millseconds | |
327 | Returns: nothing | |
328 | */ | |
329 | ||
330 | void | |
331 | millisleep(int msec) | |
332 | { | |
333 | struct itimerval itval; | |
334 | itval.it_interval.tv_sec = 0; | |
335 | itval.it_interval.tv_usec = 0; | |
336 | itval.it_value.tv_sec = msec/1000; | |
337 | itval.it_value.tv_usec = (msec % 1000) * 1000; | |
338 | milliwait(&itval); | |
339 | } | |
340 | ||
341 | ||
342 | ||
343 | /************************************************* | |
344 | * Compare microsecond times * | |
345 | *************************************************/ | |
346 | ||
347 | /* | |
348 | Arguments: | |
349 | tv1 the first time | |
350 | tv2 the second time | |
351 | ||
352 | Returns: -1, 0, or +1 | |
353 | */ | |
354 | ||
32dfdf8b | 355 | static int |
059ec3d9 PH |
356 | exim_tvcmp(struct timeval *t1, struct timeval *t2) |
357 | { | |
358 | if (t1->tv_sec > t2->tv_sec) return +1; | |
359 | if (t1->tv_sec < t2->tv_sec) return -1; | |
360 | if (t1->tv_usec > t2->tv_usec) return +1; | |
361 | if (t1->tv_usec < t2->tv_usec) return -1; | |
362 | return 0; | |
363 | } | |
364 | ||
365 | ||
366 | ||
367 | ||
368 | /************************************************* | |
369 | * Clock tick wait function * | |
370 | *************************************************/ | |
371 | ||
372 | /* Exim uses a time + a pid to generate a unique identifier in two places: its | |
373 | message IDs, and in file names for maildir deliveries. Because some OS now | |
374 | re-use pids within the same second, sub-second times are now being used. | |
4c04137d | 375 | However, for absolute certainty, we must ensure the clock has ticked before |
059ec3d9 PH |
376 | allowing the relevant process to complete. At the time of implementation of |
377 | this code (February 2003), the speed of processors is such that the clock will | |
378 | invariably have ticked already by the time a process has done its job. This | |
379 | function prepares for the time when things are faster - and it also copes with | |
380 | clocks that go backwards. | |
381 | ||
382 | Arguments: | |
383 | then_tv A timeval which was used to create uniqueness; its usec field | |
384 | has been rounded down to the value of the resolution. | |
385 | We want to be sure the current time is greater than this. | |
386 | resolution The resolution that was used to divide the microseconds | |
387 | (1 for maildir, larger for message ids) | |
388 | ||
389 | Returns: nothing | |
390 | */ | |
391 | ||
392 | void | |
393 | exim_wait_tick(struct timeval *then_tv, int resolution) | |
394 | { | |
395 | struct timeval now_tv; | |
396 | long int now_true_usec; | |
397 | ||
398 | (void)gettimeofday(&now_tv, NULL); | |
399 | now_true_usec = now_tv.tv_usec; | |
400 | now_tv.tv_usec = (now_true_usec/resolution) * resolution; | |
401 | ||
402 | if (exim_tvcmp(&now_tv, then_tv) <= 0) | |
403 | { | |
404 | struct itimerval itval; | |
405 | itval.it_interval.tv_sec = 0; | |
406 | itval.it_interval.tv_usec = 0; | |
407 | itval.it_value.tv_sec = then_tv->tv_sec - now_tv.tv_sec; | |
408 | itval.it_value.tv_usec = then_tv->tv_usec + resolution - now_true_usec; | |
409 | ||
410 | /* We know that, overall, "now" is less than or equal to "then". Therefore, a | |
411 | negative value for the microseconds is possible only in the case when "now" | |
412 | is more than a second less than "then". That means that itval.it_value.tv_sec | |
413 | is greater than zero. The following correction is therefore safe. */ | |
414 | ||
415 | if (itval.it_value.tv_usec < 0) | |
416 | { | |
417 | itval.it_value.tv_usec += 1000000; | |
418 | itval.it_value.tv_sec -= 1; | |
419 | } | |
420 | ||
421 | DEBUG(D_transport|D_receive) | |
422 | { | |
423 | if (!running_in_test_harness) | |
424 | { | |
d0291a0a | 425 | debug_printf("tick check: " TIME_T_FMT ".%06lu " TIME_T_FMT ".%06lu\n", |
7437665e JH |
426 | then_tv->tv_sec, (long) then_tv->tv_usec, |
427 | now_tv.tv_sec, (long) now_tv.tv_usec); | |
d0291a0a JH |
428 | debug_printf("waiting " TIME_T_FMT ".%06lu\n", |
429 | itval.it_value.tv_sec, (long) itval.it_value.tv_usec); | |
059ec3d9 PH |
430 | } |
431 | } | |
432 | ||
433 | milliwait(&itval); | |
434 | } | |
435 | } | |
436 | ||
437 | ||
438 | ||
439 | ||
2632889e PH |
440 | /************************************************* |
441 | * Call fopen() with umask 777 and adjust mode * | |
442 | *************************************************/ | |
443 | ||
444 | /* Exim runs with umask(0) so that files created with open() have the mode that | |
445 | is specified in the open() call. However, there are some files, typically in | |
446 | the spool directory, that are created with fopen(). They end up world-writeable | |
447 | if no precautions are taken. Although the spool directory is not accessible to | |
448 | the world, this is an untidiness. So this is a wrapper function for fopen() | |
449 | that sorts out the mode of the created file. | |
450 | ||
451 | Arguments: | |
452 | filename the file name | |
453 | options the fopen() options | |
454 | mode the required mode | |
455 | ||
456 | Returns: the fopened FILE or NULL | |
457 | */ | |
458 | ||
459 | FILE * | |
1ba28e2b | 460 | modefopen(const uschar *filename, const char *options, mode_t mode) |
2632889e | 461 | { |
67d175de PH |
462 | mode_t saved_umask = umask(0777); |
463 | FILE *f = Ufopen(filename, options); | |
464 | (void)umask(saved_umask); | |
2632889e PH |
465 | if (f != NULL) (void)fchmod(fileno(f), mode); |
466 | return f; | |
467 | } | |
468 | ||
469 | ||
470 | ||
471 | ||
059ec3d9 PH |
472 | /************************************************* |
473 | * Ensure stdin, stdout, and stderr exist * | |
474 | *************************************************/ | |
475 | ||
476 | /* Some operating systems grumble if an exec() happens without a standard | |
477 | input, output, and error (fds 0, 1, 2) being defined. The worry is that some | |
478 | file will be opened and will use these fd values, and then some other bit of | |
479 | code will assume, for example, that it can write error messages to stderr. | |
480 | This function ensures that fds 0, 1, and 2 are open if they do not already | |
481 | exist, by connecting them to /dev/null. | |
482 | ||
483 | This function is also used to ensure that std{in,out,err} exist at all times, | |
484 | so that if any library that Exim calls tries to use them, it doesn't crash. | |
485 | ||
486 | Arguments: None | |
487 | Returns: Nothing | |
488 | */ | |
489 | ||
490 | void | |
491 | exim_nullstd(void) | |
492 | { | |
493 | int i; | |
494 | int devnull = -1; | |
495 | struct stat statbuf; | |
496 | for (i = 0; i <= 2; i++) | |
497 | { | |
498 | if (fstat(i, &statbuf) < 0 && errno == EBADF) | |
499 | { | |
500 | if (devnull < 0) devnull = open("/dev/null", O_RDWR); | |
501 | if (devnull < 0) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", | |
502 | string_open_failed(errno, "/dev/null")); | |
1fe64dcc | 503 | if (devnull != i) (void)dup2(devnull, i); |
059ec3d9 PH |
504 | } |
505 | } | |
1fe64dcc | 506 | if (devnull > 2) (void)close(devnull); |
059ec3d9 PH |
507 | } |
508 | ||
509 | ||
510 | ||
511 | ||
512 | /************************************************* | |
513 | * Close unwanted file descriptors for delivery * | |
514 | *************************************************/ | |
515 | ||
516 | /* This function is called from a new process that has been forked to deliver | |
517 | an incoming message, either directly, or using exec. | |
518 | ||
519 | We want any smtp input streams to be closed in this new process. However, it | |
520 | has been observed that using fclose() here causes trouble. When reading in -bS | |
521 | input, duplicate copies of messages have been seen. The files will be sharing a | |
522 | file pointer with the parent process, and it seems that fclose() (at least on | |
523 | some systems - I saw this on Solaris 2.5.1) messes with that file pointer, at | |
524 | least sometimes. Hence we go for closing the underlying file descriptors. | |
525 | ||
526 | If TLS is active, we want to shut down the TLS library, but without molesting | |
527 | the parent's SSL connection. | |
528 | ||
529 | For delivery of a non-SMTP message, we want to close stdin and stdout (and | |
530 | stderr unless debugging) because the calling process might have set them up as | |
531 | pipes and be waiting for them to close before it waits for the submission | |
532 | process to terminate. If they aren't closed, they hold up the calling process | |
533 | until the initial delivery process finishes, which is not what we want. | |
534 | ||
535 | Exception: We do want it for synchronous delivery! | |
536 | ||
537 | And notwithstanding all the above, if D_resolver is set, implying resolver | |
538 | debugging, leave stdout open, because that's where the resolver writes its | |
539 | debugging output. | |
540 | ||
541 | When we close stderr (which implies we've also closed stdout), we also get rid | |
542 | of any controlling terminal. | |
543 | ||
544 | Arguments: None | |
545 | Returns: Nothing | |
546 | */ | |
547 | ||
548 | static void | |
549 | close_unwanted(void) | |
550 | { | |
551 | if (smtp_input) | |
552 | { | |
74f1a423 JH |
553 | #ifdef SUPPORT_TLS |
554 | tls_close(NULL, TLS_NO_SHUTDOWN); /* Shut down the TLS library */ | |
555 | #endif | |
1fe64dcc PH |
556 | (void)close(fileno(smtp_in)); |
557 | (void)close(fileno(smtp_out)); | |
059ec3d9 PH |
558 | smtp_in = NULL; |
559 | } | |
560 | else | |
561 | { | |
1fe64dcc PH |
562 | (void)close(0); /* stdin */ |
563 | if ((debug_selector & D_resolver) == 0) (void)close(1); /* stdout */ | |
564 | if (debug_selector == 0) /* stderr */ | |
059ec3d9 PH |
565 | { |
566 | if (!synchronous_delivery) | |
567 | { | |
1fe64dcc | 568 | (void)close(2); |
059ec3d9 PH |
569 | log_stderr = NULL; |
570 | } | |
571 | (void)setsid(); | |
572 | } | |
573 | } | |
574 | } | |
575 | ||
576 | ||
577 | ||
578 | ||
579 | /************************************************* | |
580 | * Set uid and gid * | |
581 | *************************************************/ | |
582 | ||
583 | /* This function sets a new uid and gid permanently, optionally calling | |
584 | initgroups() to set auxiliary groups. There are some special cases when running | |
585 | Exim in unprivileged modes. In these situations the effective uid will not be | |
586 | root; if we already have the right effective uid/gid, and don't need to | |
587 | initialize any groups, leave things as they are. | |
588 | ||
589 | Arguments: | |
590 | uid the uid | |
591 | gid the gid | |
592 | igflag TRUE if initgroups() wanted | |
593 | msg text to use in debugging output and failure log | |
594 | ||
595 | Returns: nothing; bombs out on failure | |
596 | */ | |
597 | ||
598 | void | |
599 | exim_setugid(uid_t uid, gid_t gid, BOOL igflag, uschar *msg) | |
600 | { | |
601 | uid_t euid = geteuid(); | |
602 | gid_t egid = getegid(); | |
603 | ||
604 | if (euid == root_uid || euid != uid || egid != gid || igflag) | |
605 | { | |
606 | /* At least one OS returns +1 for initgroups failure, so just check for | |
607 | non-zero. */ | |
608 | ||
609 | if (igflag) | |
610 | { | |
611 | struct passwd *pw = getpwuid(uid); | |
612 | if (pw != NULL) | |
613 | { | |
614 | if (initgroups(pw->pw_name, gid) != 0) | |
615 | log_write(0,LOG_MAIN|LOG_PANIC_DIE,"initgroups failed for uid=%ld: %s", | |
616 | (long int)uid, strerror(errno)); | |
617 | } | |
618 | else log_write(0, LOG_MAIN|LOG_PANIC_DIE, "cannot run initgroups(): " | |
619 | "no passwd entry for uid=%ld", (long int)uid); | |
620 | } | |
621 | ||
622 | if (setgid(gid) < 0 || setuid(uid) < 0) | |
623 | { | |
624 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "unable to set gid=%ld or uid=%ld " | |
625 | "(euid=%ld): %s", (long int)gid, (long int)uid, (long int)euid, msg); | |
626 | } | |
627 | } | |
628 | ||
629 | /* Debugging output included uid/gid and all groups */ | |
630 | ||
631 | DEBUG(D_uid) | |
632 | { | |
cd59ab18 | 633 | int group_count, save_errno; |
059ec3d9 PH |
634 | gid_t group_list[NGROUPS_MAX]; |
635 | debug_printf("changed uid/gid: %s\n uid=%ld gid=%ld pid=%ld\n", msg, | |
636 | (long int)geteuid(), (long int)getegid(), (long int)getpid()); | |
637 | group_count = getgroups(NGROUPS_MAX, group_list); | |
cd59ab18 | 638 | save_errno = errno; |
059ec3d9 PH |
639 | debug_printf(" auxiliary group list:"); |
640 | if (group_count > 0) | |
641 | { | |
642 | int i; | |
643 | for (i = 0; i < group_count; i++) debug_printf(" %d", (int)group_list[i]); | |
644 | } | |
cd59ab18 PP |
645 | else if (group_count < 0) |
646 | debug_printf(" <error: %s>", strerror(save_errno)); | |
059ec3d9 PH |
647 | else debug_printf(" <none>"); |
648 | debug_printf("\n"); | |
649 | } | |
650 | } | |
651 | ||
652 | ||
653 | ||
654 | ||
655 | /************************************************* | |
656 | * Exit point * | |
657 | *************************************************/ | |
658 | ||
659 | /* Exim exits via this function so that it always clears up any open | |
660 | databases. | |
661 | ||
662 | Arguments: | |
663 | rc return code | |
664 | ||
665 | Returns: does not return | |
666 | */ | |
667 | ||
668 | void | |
9bfb7e1b | 669 | exim_exit(int rc, const uschar * process) |
059ec3d9 PH |
670 | { |
671 | search_tidyup(); | |
672 | DEBUG(D_any) | |
9bfb7e1b JH |
673 | debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d %s%s%sterminating with rc=%d " |
674 | ">>>>>>>>>>>>>>>>\n", (int)getpid(), | |
675 | process ? "(" : "", process, process ? ") " : "", rc); | |
059ec3d9 PH |
676 | exit(rc); |
677 | } | |
678 | ||
679 | ||
680 | ||
681 | ||
682 | /************************************************* | |
683 | * Extract port from host address * | |
684 | *************************************************/ | |
685 | ||
686 | /* Called to extract the port from the values given to -oMa and -oMi. | |
b90c388a PH |
687 | It also checks the syntax of the address, and terminates it before the |
688 | port data when a port is extracted. | |
059ec3d9 PH |
689 | |
690 | Argument: | |
691 | address the address, with possible port on the end | |
692 | ||
693 | Returns: the port, or zero if there isn't one | |
694 | bombs out on a syntax error | |
695 | */ | |
696 | ||
697 | static int | |
698 | check_port(uschar *address) | |
699 | { | |
7cd1141b | 700 | int port = host_address_extract_port(address); |
8e669ac1 | 701 | if (string_is_ip_address(address, NULL) == 0) |
059ec3d9 PH |
702 | { |
703 | fprintf(stderr, "exim abandoned: \"%s\" is not an IP address\n", address); | |
704 | exit(EXIT_FAILURE); | |
705 | } | |
706 | return port; | |
707 | } | |
708 | ||
709 | ||
710 | ||
711 | /************************************************* | |
712 | * Test/verify an address * | |
713 | *************************************************/ | |
714 | ||
715 | /* This function is called by the -bv and -bt code. It extracts a working | |
716 | address from a full RFC 822 address. This isn't really necessary per se, but it | |
717 | has the effect of collapsing source routes. | |
718 | ||
719 | Arguments: | |
720 | s the address string | |
721 | flags flag bits for verify_address() | |
722 | exit_value to be set for failures | |
723 | ||
a5a28604 | 724 | Returns: nothing |
059ec3d9 PH |
725 | */ |
726 | ||
727 | static void | |
728 | test_address(uschar *s, int flags, int *exit_value) | |
729 | { | |
730 | int start, end, domain; | |
731 | uschar *parse_error = NULL; | |
732 | uschar *address = parse_extract_address(s, &parse_error, &start, &end, &domain, | |
733 | FALSE); | |
734 | if (address == NULL) | |
735 | { | |
736 | fprintf(stdout, "syntax error: %s\n", parse_error); | |
737 | *exit_value = 2; | |
738 | } | |
739 | else | |
740 | { | |
741 | int rc = verify_address(deliver_make_addr(address,TRUE), stdout, flags, -1, | |
4deaf07d | 742 | -1, -1, NULL, NULL, NULL); |
059ec3d9 PH |
743 | if (rc == FAIL) *exit_value = 2; |
744 | else if (rc == DEFER && *exit_value == 0) *exit_value = 1; | |
745 | } | |
746 | } | |
747 | ||
748 | ||
749 | ||
059ec3d9 PH |
750 | /************************************************* |
751 | * Show supported features * | |
752 | *************************************************/ | |
753 | ||
059ec3d9 | 754 | static void |
96508de1 | 755 | show_db_version(FILE * f) |
059ec3d9 PH |
756 | { |
757 | #ifdef DB_VERSION_STRING | |
96508de1 JH |
758 | DEBUG(D_any) |
759 | { | |
760 | fprintf(f, "Library version: BDB: Compile: %s\n", DB_VERSION_STRING); | |
761 | fprintf(f, " Runtime: %s\n", | |
762 | db_version(NULL, NULL, NULL)); | |
763 | } | |
764 | else | |
765 | fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING); | |
766 | ||
059ec3d9 PH |
767 | #elif defined(BTREEVERSION) && defined(HASHVERSION) |
768 | #ifdef USE_DB | |
769 | fprintf(f, "Probably Berkeley DB version 1.8x (native mode)\n"); | |
770 | #else | |
771 | fprintf(f, "Probably Berkeley DB version 1.8x (compatibility mode)\n"); | |
772 | #endif | |
96508de1 | 773 | |
059ec3d9 PH |
774 | #elif defined(_DBM_RDONLY) || defined(dbm_dirfno) |
775 | fprintf(f, "Probably ndbm\n"); | |
776 | #elif defined(USE_TDB) | |
777 | fprintf(f, "Using tdb\n"); | |
778 | #else | |
779 | #ifdef USE_GDBM | |
780 | fprintf(f, "Probably GDBM (native mode)\n"); | |
781 | #else | |
782 | fprintf(f, "Probably GDBM (compatibility mode)\n"); | |
783 | #endif | |
784 | #endif | |
96508de1 JH |
785 | } |
786 | ||
787 | ||
788 | /* This function is called for -bV/--version and for -d to output the optional | |
789 | features of the current Exim binary. | |
790 | ||
791 | Arguments: a FILE for printing | |
792 | Returns: nothing | |
793 | */ | |
794 | ||
795 | static void | |
796 | show_whats_supported(FILE * f) | |
797 | { | |
798 | auth_info * authi; | |
799 | ||
800 | DEBUG(D_any) {} else show_db_version(f); | |
059ec3d9 PH |
801 | |
802 | fprintf(f, "Support for:"); | |
9cec981f PH |
803 | #ifdef SUPPORT_CRYPTEQ |
804 | fprintf(f, " crypteq"); | |
805 | #endif | |
059ec3d9 PH |
806 | #if HAVE_ICONV |
807 | fprintf(f, " iconv()"); | |
808 | #endif | |
809 | #if HAVE_IPV6 | |
810 | fprintf(f, " IPv6"); | |
811 | #endif | |
79378e0f PH |
812 | #ifdef HAVE_SETCLASSRESOURCES |
813 | fprintf(f, " use_setclassresources"); | |
929ba01c | 814 | #endif |
059ec3d9 PH |
815 | #ifdef SUPPORT_PAM |
816 | fprintf(f, " PAM"); | |
817 | #endif | |
818 | #ifdef EXIM_PERL | |
819 | fprintf(f, " Perl"); | |
820 | #endif | |
1a46a8c5 PH |
821 | #ifdef EXPAND_DLFUNC |
822 | fprintf(f, " Expand_dlfunc"); | |
823 | #endif | |
059ec3d9 PH |
824 | #ifdef USE_TCP_WRAPPERS |
825 | fprintf(f, " TCPwrappers"); | |
826 | #endif | |
827 | #ifdef SUPPORT_TLS | |
c11d665d | 828 | # ifdef USE_GNUTLS |
059ec3d9 | 829 | fprintf(f, " GnuTLS"); |
c11d665d | 830 | # else |
059ec3d9 | 831 | fprintf(f, " OpenSSL"); |
c11d665d | 832 | # endif |
059ec3d9 | 833 | #endif |
b2f5a032 PH |
834 | #ifdef SUPPORT_TRANSLATE_IP_ADDRESS |
835 | fprintf(f, " translate_ip_address"); | |
836 | #endif | |
f174f16e PH |
837 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
838 | fprintf(f, " move_frozen_messages"); | |
839 | #endif | |
8523533c TK |
840 | #ifdef WITH_CONTENT_SCAN |
841 | fprintf(f, " Content_Scanning"); | |
842 | #endif | |
c0635b6d JH |
843 | #ifdef SUPPORT_DANE |
844 | fprintf(f, " DANE"); | |
845 | #endif | |
74f150bf JH |
846 | #ifndef DISABLE_DKIM |
847 | fprintf(f, " DKIM"); | |
848 | #endif | |
ef1bbb27 HSHR |
849 | #ifndef DISABLE_DNSSEC |
850 | fprintf(f, " DNSSEC"); | |
851 | #endif | |
0cbf2b82 JH |
852 | #ifndef DISABLE_EVENT |
853 | fprintf(f, " Event"); | |
854 | #endif | |
8c5d388a JH |
855 | #ifdef SUPPORT_I18N |
856 | fprintf(f, " I18N"); | |
857 | #endif | |
74f150bf JH |
858 | #ifndef DISABLE_OCSP |
859 | fprintf(f, " OCSP"); | |
860 | #endif | |
4d832da1 TL |
861 | #ifndef DISABLE_PRDR |
862 | fprintf(f, " PRDR"); | |
863 | #endif | |
cee5f132 JH |
864 | #ifdef SUPPORT_PROXY |
865 | fprintf(f, " PROXY"); | |
866 | #endif | |
f0989ec0 | 867 | #ifdef SUPPORT_SOCKS |
74f150bf | 868 | fprintf(f, " SOCKS"); |
f2de3a33 | 869 | #endif |
7952eef9 JH |
870 | #ifdef SUPPORT_SPF |
871 | fprintf(f, " SPF"); | |
872 | #endif | |
1a2dfad5 | 873 | #ifdef TCP_FASTOPEN |
10ac8d7f JH |
874 | deliver_init(); |
875 | if (tcp_fastopen_ok) fprintf(f, " TCP_Fast_Open"); | |
1a2dfad5 | 876 | #endif |
5bde3efa ACK |
877 | #ifdef EXPERIMENTAL_LMDB |
878 | fprintf(f, " Experimental_LMDB"); | |
879 | #endif | |
3369a853 ACK |
880 | #ifdef EXPERIMENTAL_QUEUEFILE |
881 | fprintf(f, " Experimental_QUEUEFILE"); | |
882 | #endif | |
8523533c TK |
883 | #ifdef EXPERIMENTAL_SRS |
884 | fprintf(f, " Experimental_SRS"); | |
885 | #endif | |
617d3932 JH |
886 | #ifdef EXPERIMENTAL_ARC |
887 | fprintf(f, " Experimental_ARC"); | |
888 | #endif | |
8523533c TK |
889 | #ifdef EXPERIMENTAL_BRIGHTMAIL |
890 | fprintf(f, " Experimental_Brightmail"); | |
891 | #endif | |
6a8f9482 TK |
892 | #ifdef EXPERIMENTAL_DCC |
893 | fprintf(f, " Experimental_DCC"); | |
894 | #endif | |
4840604e TL |
895 | #ifdef EXPERIMENTAL_DMARC |
896 | fprintf(f, " Experimental_DMARC"); | |
897 | #endif | |
895fbaf2 JH |
898 | #ifdef EXPERIMENTAL_DSN_INFO |
899 | fprintf(f, " Experimental_DSN_info"); | |
900 | #endif | |
059ec3d9 PH |
901 | fprintf(f, "\n"); |
902 | ||
e6d225ae DW |
903 | fprintf(f, "Lookups (built-in):"); |
904 | #if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2 | |
059ec3d9 PH |
905 | fprintf(f, " lsearch wildlsearch nwildlsearch iplsearch"); |
906 | #endif | |
e6d225ae | 907 | #if defined(LOOKUP_CDB) && LOOKUP_CDB!=2 |
059ec3d9 PH |
908 | fprintf(f, " cdb"); |
909 | #endif | |
e6d225ae | 910 | #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2 |
4a6a987a | 911 | fprintf(f, " dbm dbmjz dbmnz"); |
059ec3d9 | 912 | #endif |
e6d225ae | 913 | #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2 |
059ec3d9 PH |
914 | fprintf(f, " dnsdb"); |
915 | #endif | |
e6d225ae | 916 | #if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2 |
059ec3d9 PH |
917 | fprintf(f, " dsearch"); |
918 | #endif | |
e6d225ae | 919 | #if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2 |
059ec3d9 PH |
920 | fprintf(f, " ibase"); |
921 | #endif | |
e6d225ae | 922 | #if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2 |
059ec3d9 PH |
923 | fprintf(f, " ldap ldapdn ldapm"); |
924 | #endif | |
5bde3efa ACK |
925 | #ifdef EXPERIMENTAL_LMDB |
926 | fprintf(f, " lmdb"); | |
927 | #endif | |
e6d225ae | 928 | #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2 |
059ec3d9 PH |
929 | fprintf(f, " mysql"); |
930 | #endif | |
e6d225ae | 931 | #if defined(LOOKUP_NIS) && LOOKUP_NIS!=2 |
059ec3d9 PH |
932 | fprintf(f, " nis nis0"); |
933 | #endif | |
e6d225ae | 934 | #if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2 |
059ec3d9 PH |
935 | fprintf(f, " nisplus"); |
936 | #endif | |
e6d225ae | 937 | #if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2 |
059ec3d9 PH |
938 | fprintf(f, " oracle"); |
939 | #endif | |
e6d225ae | 940 | #if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2 |
059ec3d9 PH |
941 | fprintf(f, " passwd"); |
942 | #endif | |
e6d225ae | 943 | #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2 |
059ec3d9 PH |
944 | fprintf(f, " pgsql"); |
945 | #endif | |
de78e2d5 JH |
946 | #if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2 |
947 | fprintf(f, " redis"); | |
948 | #endif | |
e6d225ae | 949 | #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2 |
13b685f9 PH |
950 | fprintf(f, " sqlite"); |
951 | #endif | |
e6d225ae | 952 | #if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2 |
059ec3d9 PH |
953 | fprintf(f, " testdb"); |
954 | #endif | |
e6d225ae | 955 | #if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2 |
059ec3d9 PH |
956 | fprintf(f, " whoson"); |
957 | #endif | |
958 | fprintf(f, "\n"); | |
959 | ||
adf73d37 JH |
960 | auth_show_supported(f); |
961 | route_show_supported(f); | |
962 | transport_show_supported(f); | |
059ec3d9 | 963 | |
c11d665d JH |
964 | #ifdef WITH_CONTENT_SCAN |
965 | malware_show_supported(f); | |
966 | #endif | |
967 | ||
059ec3d9 PH |
968 | if (fixed_never_users[0] > 0) |
969 | { | |
970 | int i; | |
971 | fprintf(f, "Fixed never_users: "); | |
972 | for (i = 1; i <= (int)fixed_never_users[0] - 1; i++) | |
973 | fprintf(f, "%d:", (unsigned int)fixed_never_users[i]); | |
974 | fprintf(f, "%d\n", (unsigned int)fixed_never_users[i]); | |
975 | } | |
21c28500 | 976 | |
19bfe9e7 HSHR |
977 | fprintf(f, "Configure owner: %d:%d\n", config_uid, config_gid); |
978 | ||
73a46702 | 979 | fprintf(f, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t)); |
36f12725 | 980 | |
6545de78 PP |
981 | /* Everything else is details which are only worth reporting when debugging. |
982 | Perhaps the tls_version_report should move into this too. */ | |
983 | DEBUG(D_any) do { | |
984 | ||
985 | int i; | |
986 | ||
b3c261f7 PP |
987 | /* clang defines __GNUC__ (at least, for me) so test for it first */ |
988 | #if defined(__clang__) | |
989 | fprintf(f, "Compiler: CLang [%s]\n", __clang_version__); | |
990 | #elif defined(__GNUC__) | |
991 | fprintf(f, "Compiler: GCC [%s]\n", | |
992 | # ifdef __VERSION__ | |
993 | __VERSION__ | |
994 | # else | |
995 | "? unknown version ?" | |
996 | # endif | |
997 | ); | |
998 | #else | |
999 | fprintf(f, "Compiler: <unknown>\n"); | |
1000 | #endif | |
1001 | ||
98913c8e | 1002 | #if defined(__GLIBC__) && !defined(__UCLIBC__) |
01f3091a JH |
1003 | fprintf(f, "Library version: Glibc: Compile: %d.%d\n", |
1004 | __GLIBC__, __GLIBC_MINOR__); | |
1005 | if (__GLIBC_PREREQ(2, 1)) | |
1006 | fprintf(f, " Runtime: %s\n", | |
1007 | gnu_get_libc_version()); | |
1008 | #endif | |
1009 | ||
96508de1 JH |
1010 | show_db_version(f); |
1011 | ||
754a0503 PP |
1012 | #ifdef SUPPORT_TLS |
1013 | tls_version_report(f); | |
1014 | #endif | |
8c5d388a | 1015 | #ifdef SUPPORT_I18N |
b04be5e7 JH |
1016 | utf8_version_report(f); |
1017 | #endif | |
754a0503 | 1018 | |
fc362fc5 JH |
1019 | for (authi = auths_available; *authi->driver_name != '\0'; ++authi) |
1020 | if (authi->version_report) | |
44bbabb5 | 1021 | (*authi->version_report)(f); |
6545de78 | 1022 | |
decd95cb | 1023 | /* PCRE_PRERELEASE is either defined and empty or a bare sequence of |
6475bd82 PP |
1024 | characters; unless it's an ancient version of PCRE in which case it |
1025 | is not defined. */ | |
1026 | #ifndef PCRE_PRERELEASE | |
01f3091a | 1027 | # define PCRE_PRERELEASE |
6475bd82 PP |
1028 | #endif |
1029 | #define QUOTE(X) #X | |
1030 | #define EXPAND_AND_QUOTE(X) QUOTE(X) | |
6545de78 PP |
1031 | fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n" |
1032 | " Runtime: %s\n", | |
1033 | PCRE_MAJOR, PCRE_MINOR, | |
6475bd82 | 1034 | EXPAND_AND_QUOTE(PCRE_PRERELEASE) "", |
6545de78 | 1035 | pcre_version()); |
6475bd82 PP |
1036 | #undef QUOTE |
1037 | #undef EXPAND_AND_QUOTE | |
6545de78 PP |
1038 | |
1039 | init_lookup_list(); | |
1040 | for (i = 0; i < lookup_list_count; i++) | |
6545de78 PP |
1041 | if (lookup_list[i]->version_report) |
1042 | lookup_list[i]->version_report(f); | |
6545de78 | 1043 | |
b70d2586 PP |
1044 | #ifdef WHITELIST_D_MACROS |
1045 | fprintf(f, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS); | |
1046 | #else | |
1047 | fprintf(f, "WHITELIST_D_MACROS unset\n"); | |
1048 | #endif | |
1049 | #ifdef TRUSTED_CONFIG_LIST | |
1050 | fprintf(f, "TRUSTED_CONFIG_LIST: \"%s\"\n", TRUSTED_CONFIG_LIST); | |
1051 | #else | |
1052 | fprintf(f, "TRUSTED_CONFIG_LIST unset\n"); | |
1053 | #endif | |
1054 | ||
6545de78 | 1055 | } while (0); |
059ec3d9 PH |
1056 | } |
1057 | ||
1058 | ||
98a90c36 PP |
1059 | /************************************************* |
1060 | * Show auxiliary information about Exim * | |
1061 | *************************************************/ | |
1062 | ||
1063 | static void | |
1064 | show_exim_information(enum commandline_info request, FILE *stream) | |
1065 | { | |
1066 | const uschar **pp; | |
1067 | ||
1068 | switch(request) | |
1069 | { | |
1070 | case CMDINFO_NONE: | |
1071 | fprintf(stream, "Oops, something went wrong.\n"); | |
1072 | return; | |
1073 | case CMDINFO_HELP: | |
1074 | fprintf(stream, | |
1075 | "The -bI: flag takes a string indicating which information to provide.\n" | |
1076 | "If the string is not recognised, you'll get this help (on stderr).\n" | |
1077 | "\n" | |
1078 | " exim -bI:help this information\n" | |
030caf2a JS |
1079 | " exim -bI:dscp list of known dscp value keywords\n" |
1080 | " exim -bI:sieve list of supported sieve extensions\n" | |
98a90c36 PP |
1081 | ); |
1082 | return; | |
1083 | case CMDINFO_SIEVE: | |
1084 | for (pp = exim_sieve_extension_list; *pp; ++pp) | |
1085 | fprintf(stream, "%s\n", *pp); | |
1086 | return; | |
36a3ae5f PP |
1087 | case CMDINFO_DSCP: |
1088 | dscp_list_to_stream(stream); | |
1089 | return; | |
98a90c36 PP |
1090 | } |
1091 | } | |
059ec3d9 PH |
1092 | |
1093 | ||
1094 | /************************************************* | |
1095 | * Quote a local part * | |
1096 | *************************************************/ | |
1097 | ||
1098 | /* This function is used when a sender address or a From: or Sender: header | |
1099 | line is being created from the caller's login, or from an authenticated_id. It | |
1100 | applies appropriate quoting rules for a local part. | |
1101 | ||
1102 | Argument: the local part | |
1103 | Returns: the local part, quoted if necessary | |
1104 | */ | |
1105 | ||
1106 | uschar * | |
1107 | local_part_quote(uschar *lpart) | |
1108 | { | |
1109 | BOOL needs_quote = FALSE; | |
acec9514 | 1110 | gstring * g; |
059ec3d9 PH |
1111 | uschar *t; |
1112 | ||
1113 | for (t = lpart; !needs_quote && *t != 0; t++) | |
1114 | { | |
1115 | needs_quote = !isalnum(*t) && strchr("!#$%&'*+-/=?^_`{|}~", *t) == NULL && | |
1116 | (*t != '.' || t == lpart || t[1] == 0); | |
1117 | } | |
1118 | ||
1119 | if (!needs_quote) return lpart; | |
1120 | ||
acec9514 | 1121 | g = string_catn(NULL, US"\"", 1); |
059ec3d9 PH |
1122 | |
1123 | for (;;) | |
1124 | { | |
1125 | uschar *nq = US Ustrpbrk(lpart, "\\\""); | |
1126 | if (nq == NULL) | |
1127 | { | |
acec9514 | 1128 | g = string_cat(g, lpart); |
059ec3d9 PH |
1129 | break; |
1130 | } | |
acec9514 JH |
1131 | g = string_catn(g, lpart, nq - lpart); |
1132 | g = string_catn(g, US"\\", 1); | |
1133 | g = string_catn(g, nq, 1); | |
059ec3d9 PH |
1134 | lpart = nq + 1; |
1135 | } | |
1136 | ||
acec9514 JH |
1137 | g = string_catn(g, US"\"", 1); |
1138 | return string_from_gstring(g); | |
059ec3d9 PH |
1139 | } |
1140 | ||
1141 | ||
1142 | ||
1143 | #ifdef USE_READLINE | |
1144 | /************************************************* | |
1145 | * Load readline() functions * | |
1146 | *************************************************/ | |
1147 | ||
1148 | /* This function is called from testing executions that read data from stdin, | |
1149 | but only when running as the calling user. Currently, only -be does this. The | |
1150 | function loads the readline() function library and passes back the functions. | |
1151 | On some systems, it needs the curses library, so load that too, but try without | |
1152 | it if loading fails. All this functionality has to be requested at build time. | |
1153 | ||
1154 | Arguments: | |
1155 | fn_readline_ptr pointer to where to put the readline pointer | |
1156 | fn_addhist_ptr pointer to where to put the addhistory function | |
1157 | ||
1158 | Returns: the dlopen handle or NULL on failure | |
1159 | */ | |
1160 | ||
1161 | static void * | |
1ba28e2b PP |
1162 | set_readline(char * (**fn_readline_ptr)(const char *), |
1163 | void (**fn_addhist_ptr)(const char *)) | |
059ec3d9 PH |
1164 | { |
1165 | void *dlhandle; | |
e12f8c32 | 1166 | void *dlhandle_curses = dlopen("libcurses." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_LAZY); |
059ec3d9 | 1167 | |
e12f8c32 | 1168 | dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW); |
059ec3d9 PH |
1169 | if (dlhandle_curses != NULL) dlclose(dlhandle_curses); |
1170 | ||
1171 | if (dlhandle != NULL) | |
1172 | { | |
1ba28e2b PP |
1173 | /* Checked manual pages; at least in GNU Readline 6.1, the prototypes are: |
1174 | * char * readline (const char *prompt); | |
1175 | * void add_history (const char *string); | |
1176 | */ | |
1177 | *fn_readline_ptr = (char *(*)(const char*))dlsym(dlhandle, "readline"); | |
1178 | *fn_addhist_ptr = (void(*)(const char*))dlsym(dlhandle, "add_history"); | |
059ec3d9 PH |
1179 | } |
1180 | else | |
1181 | { | |
1182 | DEBUG(D_any) debug_printf("failed to load readline: %s\n", dlerror()); | |
1183 | } | |
1184 | ||
1185 | return dlhandle; | |
1186 | } | |
1187 | #endif | |
1188 | ||
1189 | ||
1190 | ||
1191 | /************************************************* | |
1192 | * Get a line from stdin for testing things * | |
1193 | *************************************************/ | |
1194 | ||
1195 | /* This function is called when running tests that can take a number of lines | |
1196 | of input (for example, -be and -bt). It handles continuations and trailing | |
1197 | spaces. And prompting and a blank line output on eof. If readline() is in use, | |
1198 | the arguments are non-NULL and provide the relevant functions. | |
1199 | ||
1200 | Arguments: | |
1201 | fn_readline readline function or NULL | |
1202 | fn_addhist addhist function or NULL | |
1203 | ||
1204 | Returns: pointer to dynamic memory, or NULL at end of file | |
1205 | */ | |
1206 | ||
1207 | static uschar * | |
1ba28e2b | 1208 | get_stdinput(char *(*fn_readline)(const char *), void(*fn_addhist)(const char *)) |
059ec3d9 PH |
1209 | { |
1210 | int i; | |
acec9514 | 1211 | gstring * g = NULL; |
059ec3d9 | 1212 | |
acec9514 | 1213 | if (!fn_readline) { printf("> "); fflush(stdout); } |
059ec3d9 PH |
1214 | |
1215 | for (i = 0;; i++) | |
1216 | { | |
1217 | uschar buffer[1024]; | |
1218 | uschar *p, *ss; | |
1219 | ||
1220 | #ifdef USE_READLINE | |
1221 | char *readline_line = NULL; | |
1222 | if (fn_readline != NULL) | |
1223 | { | |
1224 | if ((readline_line = fn_readline((i > 0)? "":"> ")) == NULL) break; | |
1225 | if (*readline_line != 0 && fn_addhist != NULL) fn_addhist(readline_line); | |
1226 | p = US readline_line; | |
1227 | } | |
1228 | else | |
1229 | #endif | |
1230 | ||
1231 | /* readline() not in use */ | |
1232 | ||
1233 | { | |
1234 | if (Ufgets(buffer, sizeof(buffer), stdin) == NULL) break; | |
1235 | p = buffer; | |
1236 | } | |
1237 | ||
1238 | /* Handle the line */ | |
1239 | ||
1240 | ss = p + (int)Ustrlen(p); | |
1241 | while (ss > p && isspace(ss[-1])) ss--; | |
1242 | ||
1243 | if (i > 0) | |
1244 | { | |
1245 | while (p < ss && isspace(*p)) p++; /* leading space after cont */ | |
1246 | } | |
1247 | ||
acec9514 | 1248 | g = string_catn(g, p, ss - p); |
059ec3d9 PH |
1249 | |
1250 | #ifdef USE_READLINE | |
acec9514 | 1251 | if (fn_readline) free(readline_line); |
059ec3d9 PH |
1252 | #endif |
1253 | ||
acec9514 JH |
1254 | /* g can only be NULL if ss==p */ |
1255 | if (ss == p || g->s[g->ptr-1] != '\\') | |
059ec3d9 | 1256 | break; |
acec9514 JH |
1257 | |
1258 | --g->ptr; | |
1259 | (void) string_from_gstring(g); | |
059ec3d9 PH |
1260 | } |
1261 | ||
acec9514 JH |
1262 | if (!g) printf("\n"); |
1263 | return string_from_gstring(g); | |
059ec3d9 PH |
1264 | } |
1265 | ||
1266 | ||
1267 | ||
81ea09ca NM |
1268 | /************************************************* |
1269 | * Output usage information for the program * | |
1270 | *************************************************/ | |
1271 | ||
1272 | /* This function is called when there are no recipients | |
1273 | or a specific --help argument was added. | |
1274 | ||
1275 | Arguments: | |
1276 | progname information on what name we were called by | |
1277 | ||
1278 | Returns: DOES NOT RETURN | |
1279 | */ | |
1280 | ||
1281 | static void | |
1282 | exim_usage(uschar *progname) | |
1283 | { | |
1284 | ||
4c04137d | 1285 | /* Handle specific program invocation variants */ |
81ea09ca NM |
1286 | if (Ustrcmp(progname, US"-mailq") == 0) |
1287 | { | |
1288 | fprintf(stderr, | |
e765a0f1 | 1289 | "mailq - list the contents of the mail queue\n\n" |
81ea09ca NM |
1290 | "For a list of options, see the Exim documentation.\n"); |
1291 | exit(EXIT_FAILURE); | |
1292 | } | |
1293 | ||
1294 | /* Generic usage - we output this whatever happens */ | |
1295 | fprintf(stderr, | |
1296 | "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n" | |
1297 | "not directly from a shell command line. Options and/or arguments control\n" | |
1298 | "what it does when called. For a list of options, see the Exim documentation.\n"); | |
1299 | ||
1300 | exit(EXIT_FAILURE); | |
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 | |
1320 | macro_item *m; | |
1a7c9a48 | 1321 | uschar *whitelisted, *end, *p, **whites, **w; |
a7cbbf50 PP |
1322 | int white_count, i, n; |
1323 | size_t len; | |
1324 | BOOL prev_char_item, found; | |
1325 | #endif | |
1326 | ||
a4034eb8 | 1327 | if (!opt_D_used) |
a7cbbf50 PP |
1328 | return TRUE; |
1329 | #ifndef WHITELIST_D_MACROS | |
1330 | return FALSE; | |
1331 | #else | |
1332 | ||
66581d1e PP |
1333 | /* We only trust -D overrides for some invoking users: |
1334 | root, the exim run-time user, the optional config owner user. | |
1335 | I don't know why config-owner would be needed, but since they can own the | |
1336 | config files anyway, there's no security risk to letting them override -D. */ | |
1337 | if ( ! ((real_uid == root_uid) | |
1338 | || (real_uid == exim_uid) | |
1339 | #ifdef CONFIGURE_OWNER | |
1340 | || (real_uid == config_uid) | |
1341 | #endif | |
1342 | )) | |
1343 | { | |
1344 | debug_printf("macros_trusted rejecting macros for uid %d\n", (int) real_uid); | |
1345 | return FALSE; | |
1346 | } | |
1347 | ||
a7cbbf50 PP |
1348 | /* Get a list of macros which are whitelisted */ |
1349 | whitelisted = string_copy_malloc(US WHITELIST_D_MACROS); | |
1350 | prev_char_item = FALSE; | |
1351 | white_count = 0; | |
1352 | for (p = whitelisted; *p != '\0'; ++p) | |
1353 | { | |
1354 | if (*p == ':' || isspace(*p)) | |
1355 | { | |
1356 | *p = '\0'; | |
1357 | if (prev_char_item) | |
1358 | ++white_count; | |
1359 | prev_char_item = FALSE; | |
1360 | continue; | |
1361 | } | |
1362 | if (!prev_char_item) | |
1363 | prev_char_item = TRUE; | |
1364 | } | |
1365 | end = p; | |
1366 | if (prev_char_item) | |
1367 | ++white_count; | |
1368 | if (!white_count) | |
1369 | return FALSE; | |
1370 | whites = store_malloc(sizeof(uschar *) * (white_count+1)); | |
1371 | for (p = whitelisted, i = 0; (p != end) && (i < white_count); ++p) | |
1372 | { | |
1373 | if (*p != '\0') | |
1374 | { | |
1375 | whites[i++] = p; | |
1376 | if (i == white_count) | |
1377 | break; | |
1378 | while (*p != '\0' && p < end) | |
1379 | ++p; | |
1380 | } | |
1381 | } | |
1382 | whites[i] = NULL; | |
1383 | ||
1a7c9a48 JH |
1384 | /* The list of commandline macros should be very short. |
1385 | Accept the N*M complexity. */ | |
85e03244 | 1386 | for (m = macros_user; m; m = m->next) if (m->command_line) |
1a7c9a48 JH |
1387 | { |
1388 | found = FALSE; | |
1389 | for (w = whites; *w; ++w) | |
1390 | if (Ustrcmp(*w, m->name) == 0) | |
1391 | { | |
1392 | found = TRUE; | |
1393 | break; | |
1394 | } | |
1395 | if (!found) | |
1396 | return FALSE; | |
1397 | if (!m->replacement) | |
1398 | continue; | |
1399 | if ((len = m->replen) == 0) | |
1400 | continue; | |
1401 | n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len, | |
1402 | 0, PCRE_EOPT, NULL, 0); | |
1403 | if (n < 0) | |
1404 | { | |
1405 | if (n != PCRE_ERROR_NOMATCH) | |
1406 | debug_printf("macros_trusted checking %s returned %d\n", m->name, n); | |
1407 | return FALSE; | |
1408 | } | |
1409 | } | |
43236f35 | 1410 | DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n"); |
a7cbbf50 PP |
1411 | return TRUE; |
1412 | #endif | |
1413 | } | |
1414 | ||
1415 | ||
9650d98a JH |
1416 | /************************************************* |
1417 | * Expansion testing * | |
1418 | *************************************************/ | |
1419 | ||
1420 | /* Expand and print one item, doing macro-processing. | |
1421 | ||
1422 | Arguments: | |
1423 | item line for expansion | |
1424 | */ | |
1425 | ||
1426 | static void | |
1427 | expansion_test_line(uschar * line) | |
1428 | { | |
1429 | int len; | |
1430 | BOOL dummy_macexp; | |
1431 | ||
1432 | Ustrncpy(big_buffer, line, big_buffer_size); | |
1433 | big_buffer[big_buffer_size-1] = '\0'; | |
1434 | len = Ustrlen(big_buffer); | |
1435 | ||
1436 | (void) macros_expand(0, &len, &dummy_macexp); | |
1437 | ||
1438 | if (isupper(big_buffer[0])) | |
1439 | { | |
1440 | if (macro_read_assignment(big_buffer)) | |
1a7c9a48 | 1441 | printf("Defined macro '%s'\n", mlast->name); |
9650d98a JH |
1442 | } |
1443 | else | |
1444 | if ((line = expand_string(big_buffer))) printf("%s\n", CS line); | |
1445 | else printf("Failed: %s\n", expand_string_message); | |
1446 | } | |
1447 | ||
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; | |
1491 | BOOL arg_queue_only = FALSE; | |
1492 | BOOL bi_option = FALSE; | |
1493 | BOOL checking = FALSE; | |
1494 | BOOL count_queue = FALSE; | |
1495 | BOOL expansion_test = FALSE; | |
1496 | BOOL extract_recipients = FALSE; | |
f4ee74ac | 1497 | BOOL flag_G = FALSE; |
12f69989 | 1498 | BOOL flag_n = FALSE; |
059ec3d9 PH |
1499 | BOOL forced_delivery = FALSE; |
1500 | BOOL f_end_dot = FALSE; | |
1501 | BOOL deliver_give_up = FALSE; | |
1502 | BOOL list_queue = FALSE; | |
1503 | BOOL list_options = FALSE; | |
bf3c2c6b | 1504 | BOOL list_config = FALSE; |
059ec3d9 PH |
1505 | BOOL local_queue_only; |
1506 | BOOL more = TRUE; | |
1507 | BOOL one_msg_action = FALSE; | |
4ab69ec7 | 1508 | BOOL opt_D_used = FALSE; |
059ec3d9 PH |
1509 | BOOL queue_only_set = FALSE; |
1510 | BOOL receiving_message = TRUE; | |
33d73e3b | 1511 | BOOL sender_ident_set = FALSE; |
8669f003 | 1512 | BOOL session_local_queue_only; |
059ec3d9 PH |
1513 | BOOL unprivileged; |
1514 | BOOL removed_privilege = FALSE; | |
81ea09ca | 1515 | BOOL usage_wanted = FALSE; |
059ec3d9 PH |
1516 | BOOL verify_address_mode = FALSE; |
1517 | BOOL verify_as_sender = FALSE; | |
1518 | BOOL version_printed = FALSE; | |
1519 | uschar *alias_arg = NULL; | |
1520 | uschar *called_as = US""; | |
a3fb9793 | 1521 | uschar *cmdline_syslog_name = NULL; |
059ec3d9 PH |
1522 | uschar *start_queue_run_id = NULL; |
1523 | uschar *stop_queue_run_id = NULL; | |
328895cc | 1524 | uschar *expansion_test_message = NULL; |
059ec3d9 PH |
1525 | uschar *ftest_domain = NULL; |
1526 | uschar *ftest_localpart = NULL; | |
1527 | uschar *ftest_prefix = NULL; | |
1528 | uschar *ftest_suffix = NULL; | |
0ad2e0fc | 1529 | uschar *log_oneline = NULL; |
8544e77a | 1530 | uschar *malware_test_file = NULL; |
059ec3d9 PH |
1531 | uschar *real_sender_address; |
1532 | uschar *originator_home = US"/"; | |
a3fb9793 | 1533 | size_t sz; |
059ec3d9 PH |
1534 | void *reset_point; |
1535 | ||
1536 | struct passwd *pw; | |
1537 | struct stat statbuf; | |
1538 | pid_t passed_qr_pid = (pid_t)0; | |
1539 | int passed_qr_pipe = -1; | |
1540 | gid_t group_list[NGROUPS_MAX]; | |
1541 | ||
98a90c36 PP |
1542 | /* For the -bI: flag */ |
1543 | enum commandline_info info_flag = CMDINFO_NONE; | |
1544 | BOOL info_stdout = FALSE; | |
1545 | ||
059ec3d9 PH |
1546 | /* Possible options for -R and -S */ |
1547 | ||
1548 | static uschar *rsopts[] = { US"f", US"ff", US"r", US"rf", US"rff" }; | |
1549 | ||
1550 | /* Need to define this in case we need to change the environment in order | |
1551 | to get rid of a bogus time zone. We have to make it char rather than uschar | |
1552 | because some OS define it in /usr/include/unistd.h. */ | |
1553 | ||
1554 | extern char **environ; | |
1555 | ||
35edf2ff | 1556 | /* If the Exim user and/or group and/or the configuration file owner/group were |
059ec3d9 PH |
1557 | defined by ref:name at build time, we must now find the actual uid/gid values. |
1558 | This is a feature to make the lives of binary distributors easier. */ | |
1559 | ||
1560 | #ifdef EXIM_USERNAME | |
1561 | if (route_finduser(US EXIM_USERNAME, &pw, &exim_uid)) | |
1562 | { | |
10385c15 PP |
1563 | if (exim_uid == 0) |
1564 | { | |
1565 | fprintf(stderr, "exim: refusing to run with uid 0 for \"%s\"\n", | |
1566 | EXIM_USERNAME); | |
1567 | exit(EXIT_FAILURE); | |
1568 | } | |
084c1d8c PP |
1569 | /* If ref:name uses a number as the name, route_finduser() returns |
1570 | TRUE with exim_uid set and pw coerced to NULL. */ | |
1571 | if (pw) | |
1572 | exim_gid = pw->pw_gid; | |
1573 | #ifndef EXIM_GROUPNAME | |
1574 | else | |
1575 | { | |
1576 | fprintf(stderr, | |
1577 | "exim: ref:name should specify a usercode, not a group.\n" | |
1578 | "exim: can't let you get away with it unless you also specify a group.\n"); | |
1579 | exit(EXIT_FAILURE); | |
1580 | } | |
1581 | #endif | |
059ec3d9 PH |
1582 | } |
1583 | else | |
1584 | { | |
1585 | fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n", | |
1586 | EXIM_USERNAME); | |
1587 | exit(EXIT_FAILURE); | |
1588 | } | |
1589 | #endif | |
1590 | ||
1591 | #ifdef EXIM_GROUPNAME | |
1592 | if (!route_findgroup(US EXIM_GROUPNAME, &exim_gid)) | |
1593 | { | |
1594 | fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n", | |
1595 | EXIM_GROUPNAME); | |
1596 | exit(EXIT_FAILURE); | |
1597 | } | |
1598 | #endif | |
1599 | ||
1600 | #ifdef CONFIGURE_OWNERNAME | |
1601 | if (!route_finduser(US CONFIGURE_OWNERNAME, NULL, &config_uid)) | |
1602 | { | |
1603 | fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n", | |
1604 | CONFIGURE_OWNERNAME); | |
1605 | exit(EXIT_FAILURE); | |
1606 | } | |
1607 | #endif | |
1608 | ||
79d4bc3d PP |
1609 | /* We default the system_filter_user to be the Exim run-time user, as a |
1610 | sane non-root value. */ | |
1611 | system_filter_uid = exim_uid; | |
1612 | ||
35edf2ff PH |
1613 | #ifdef CONFIGURE_GROUPNAME |
1614 | if (!route_findgroup(US CONFIGURE_GROUPNAME, &config_gid)) | |
1615 | { | |
1616 | fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n", | |
1617 | CONFIGURE_GROUPNAME); | |
1618 | exit(EXIT_FAILURE); | |
1619 | } | |
1620 | #endif | |
1621 | ||
92e6a3d9 JH |
1622 | /* In the Cygwin environment, some initialization used to need doing. |
1623 | It was fudged in by means of this macro; now no longer but we'll leave | |
1624 | it in case of others. */ | |
059ec3d9 PH |
1625 | |
1626 | #ifdef OS_INIT | |
1627 | OS_INIT | |
1628 | #endif | |
1629 | ||
1630 | /* Check a field which is patched when we are running Exim within its | |
1631 | testing harness; do a fast initial check, and then the whole thing. */ | |
1632 | ||
1633 | running_in_test_harness = | |
1634 | *running_status == '<' && Ustrcmp(running_status, "<<<testing>>>") == 0; | |
65a32f85 JH |
1635 | if (running_in_test_harness) |
1636 | debug_store = TRUE; | |
059ec3d9 PH |
1637 | |
1638 | /* The C standard says that the equivalent of setlocale(LC_ALL, "C") is obeyed | |
1639 | at the start of a program; however, it seems that some environments do not | |
1640 | follow this. A "strange" locale can affect the formatting of timestamps, so we | |
1641 | make quite sure. */ | |
1642 | ||
1643 | setlocale(LC_ALL, "C"); | |
1644 | ||
1645 | /* Set up the default handler for timing using alarm(). */ | |
1646 | ||
1647 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
1648 | ||
1649 | /* Ensure we have a buffer for constructing log entries. Use malloc directly, | |
1650 | because store_malloc writes a log entry on failure. */ | |
1651 | ||
40c90bca | 1652 | if (!(log_buffer = US malloc(LOG_BUFFER_SIZE))) |
059ec3d9 PH |
1653 | { |
1654 | fprintf(stderr, "exim: failed to get store for log buffer\n"); | |
1655 | exit(EXIT_FAILURE); | |
1656 | } | |
1657 | ||
6c6d6e48 TF |
1658 | /* Initialize the default log options. */ |
1659 | ||
1660 | bits_set(log_selector, log_selector_size, log_default); | |
1661 | ||
059ec3d9 PH |
1662 | /* Set log_stderr to stderr, provided that stderr exists. This gets reset to |
1663 | NULL when the daemon is run and the file is closed. We have to use this | |
1664 | indirection, because some systems don't allow writing to the variable "stderr". | |
1665 | */ | |
1666 | ||
1667 | if (fstat(fileno(stderr), &statbuf) >= 0) log_stderr = stderr; | |
1668 | ||
1669 | /* Arrange for the PCRE regex library to use our store functions. Note that | |
1670 | the normal calls are actually macros that add additional arguments for | |
1671 | debugging purposes so we have to assign specially constructed functions here. | |
1672 | The default is to use store in the stacking pool, but this is overridden in the | |
1673 | regex_must_compile() function. */ | |
1674 | ||
1675 | pcre_malloc = function_store_get; | |
1676 | pcre_free = function_dummy_free; | |
1677 | ||
1678 | /* Ensure there is a big buffer for temporary use in several places. It is put | |
1679 | in malloc store so that it can be freed for enlargement if necessary. */ | |
1680 | ||
1681 | big_buffer = store_malloc(big_buffer_size); | |
1682 | ||
1683 | /* Set up the handler for the data request signal, and set the initial | |
1684 | descriptive text. */ | |
1685 | ||
1686 | set_process_info("initializing"); | |
1687 | os_restarting_signal(SIGUSR1, usr1_handler); | |
1688 | ||
830832c9 HSHR |
1689 | /* If running in a dockerized environment, the TERM signal is only |
1690 | delegated to the PID 1 if we request it by setting an signal handler */ | |
1691 | if (getpid() == 1) signal(SIGTERM, term_handler); | |
1692 | ||
059ec3d9 PH |
1693 | /* SIGHUP is used to get the daemon to reconfigure. It gets set as appropriate |
1694 | in the daemon code. For the rest of Exim's uses, we ignore it. */ | |
1695 | ||
1696 | signal(SIGHUP, SIG_IGN); | |
1697 | ||
1698 | /* We don't want to die on pipe errors as the code is written to handle | |
1699 | the write error instead. */ | |
1700 | ||
1701 | signal(SIGPIPE, SIG_IGN); | |
1702 | ||
1703 | /* Under some circumstance on some OS, Exim can get called with SIGCHLD | |
1704 | set to SIG_IGN. This causes subprocesses that complete before the parent | |
1705 | process waits for them not to hang around, so when Exim calls wait(), nothing | |
1706 | is there. The wait() code has been made robust against this, but let's ensure | |
1707 | that SIGCHLD is set to SIG_DFL, because it's tidier to wait and get a process | |
1708 | ending status. We use sigaction rather than plain signal() on those OS where | |
1709 | SA_NOCLDWAIT exists, because we want to be sure it is turned off. (There was a | |
1710 | problem on AIX with this.) */ | |
1711 | ||
1712 | #ifdef SA_NOCLDWAIT | |
1713 | { | |
1714 | struct sigaction act; | |
1715 | act.sa_handler = SIG_DFL; | |
1716 | sigemptyset(&(act.sa_mask)); | |
1717 | act.sa_flags = 0; | |
1718 | sigaction(SIGCHLD, &act, NULL); | |
1719 | } | |
1720 | #else | |
1721 | signal(SIGCHLD, SIG_DFL); | |
1722 | #endif | |
1723 | ||
1724 | /* Save the arguments for use if we re-exec exim as a daemon after receiving | |
1725 | SIGHUP. */ | |
1726 | ||
1727 | sighup_argv = argv; | |
1728 | ||
1729 | /* Set up the version number. Set up the leading 'E' for the external form of | |
1730 | message ids, set the pointer to the internal form, and initialize it to | |
1731 | indicate no message being processed. */ | |
1732 | ||
1733 | version_init(); | |
1734 | message_id_option[0] = '-'; | |
1735 | message_id_external = message_id_option + 1; | |
1736 | message_id_external[0] = 'E'; | |
1737 | message_id = message_id_external + 1; | |
1738 | message_id[0] = 0; | |
1739 | ||
67d175de | 1740 | /* Set the umask to zero so that any files Exim creates using open() are |
2632889e PH |
1741 | created with the modes that it specifies. NOTE: Files created with fopen() have |
1742 | a problem, which was not recognized till rather late (February 2006). With this | |
1743 | umask, such files will be world writeable. (They are all content scanning files | |
1744 | in the spool directory, which isn't world-accessible, so this is not a | |
1745 | disaster, but it's untidy.) I don't want to change this overall setting, | |
1746 | however, because it will interact badly with the open() calls. Instead, there's | |
1747 | now a function called modefopen() that fiddles with the umask while calling | |
1748 | fopen(). */ | |
059ec3d9 | 1749 | |
67d175de | 1750 | (void)umask(0); |
059ec3d9 PH |
1751 | |
1752 | /* Precompile the regular expression for matching a message id. Keep this in | |
1753 | step with the code that generates ids in the accept.c module. We need to do | |
1754 | this here, because the -M options check their arguments for syntactic validity | |
1755 | using mac_ismsgid, which uses this. */ | |
1756 | ||
1757 | regex_ismsgid = | |
1758 | regex_must_compile(US"^(?:[^\\W_]{6}-){2}[^\\W_]{2}$", FALSE, TRUE); | |
1759 | ||
a5bd321b | 1760 | /* Precompile the regular expression that is used for matching an SMTP error |
d6a96edc PH |
1761 | code, possibly extended, at the start of an error message. Note that the |
1762 | terminating whitespace character is included. */ | |
a5bd321b PH |
1763 | |
1764 | regex_smtp_code = | |
1765 | regex_must_compile(US"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?", | |
1766 | FALSE, TRUE); | |
1767 | ||
a7cbbf50 PP |
1768 | #ifdef WHITELIST_D_MACROS |
1769 | /* Precompile the regular expression used to filter the content of macros | |
1770 | given to -D for permissibility. */ | |
1771 | ||
1772 | regex_whitelisted_macro = | |
1773 | regex_must_compile(US"^[A-Za-z0-9_/.-]*$", FALSE, TRUE); | |
1774 | #endif | |
1775 | ||
f38917cc JH |
1776 | for (i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL; |
1777 | ||
059ec3d9 PH |
1778 | /* If the program is called as "mailq" treat it as equivalent to "exim -bp"; |
1779 | this seems to be a generally accepted convention, since one finds symbolic | |
1780 | links called "mailq" in standard OS configurations. */ | |
1781 | ||
1782 | if ((namelen == 5 && Ustrcmp(argv[0], "mailq") == 0) || | |
1783 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/mailq", 6) == 0)) | |
1784 | { | |
1785 | list_queue = TRUE; | |
1786 | receiving_message = FALSE; | |
1787 | called_as = US"-mailq"; | |
1788 | } | |
1789 | ||
1790 | /* If the program is called as "rmail" treat it as equivalent to | |
1791 | "exim -i -oee", thus allowing UUCP messages to be input using non-SMTP mode, | |
1792 | i.e. preventing a single dot on a line from terminating the message, and | |
1793 | returning with zero return code, even in cases of error (provided an error | |
1794 | message has been sent). */ | |
1795 | ||
1796 | if ((namelen == 5 && Ustrcmp(argv[0], "rmail") == 0) || | |
1797 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rmail", 6) == 0)) | |
1798 | { | |
1799 | dot_ends = FALSE; | |
1800 | called_as = US"-rmail"; | |
1801 | errors_sender_rc = EXIT_SUCCESS; | |
1802 | } | |
1803 | ||
1804 | /* If the program is called as "rsmtp" treat it as equivalent to "exim -bS"; | |
1805 | this is a smail convention. */ | |
1806 | ||
1807 | if ((namelen == 5 && Ustrcmp(argv[0], "rsmtp") == 0) || | |
1808 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rsmtp", 6) == 0)) | |
1809 | { | |
1810 | smtp_input = smtp_batched_input = TRUE; | |
1811 | called_as = US"-rsmtp"; | |
1812 | } | |
1813 | ||
1814 | /* If the program is called as "runq" treat it as equivalent to "exim -q"; | |
1815 | this is a smail convention. */ | |
1816 | ||
1817 | if ((namelen == 4 && Ustrcmp(argv[0], "runq") == 0) || | |
1818 | (namelen > 4 && Ustrncmp(argv[0] + namelen - 5, "/runq", 5) == 0)) | |
1819 | { | |
1820 | queue_interval = 0; | |
1821 | receiving_message = FALSE; | |
1822 | called_as = US"-runq"; | |
1823 | } | |
1824 | ||
1825 | /* If the program is called as "newaliases" treat it as equivalent to | |
1826 | "exim -bi"; this is a sendmail convention. */ | |
1827 | ||
1828 | if ((namelen == 10 && Ustrcmp(argv[0], "newaliases") == 0) || | |
1829 | (namelen > 10 && Ustrncmp(argv[0] + namelen - 11, "/newaliases", 11) == 0)) | |
1830 | { | |
1831 | bi_option = TRUE; | |
1832 | receiving_message = FALSE; | |
1833 | called_as = US"-newaliases"; | |
1834 | } | |
1835 | ||
1836 | /* Save the original effective uid for a couple of uses later. It should | |
1837 | normally be root, but in some esoteric environments it may not be. */ | |
1838 | ||
1839 | original_euid = geteuid(); | |
1840 | ||
1841 | /* Get the real uid and gid. If the caller is root, force the effective uid/gid | |
1842 | to be the same as the real ones. This makes a difference only if Exim is setuid | |
1843 | (or setgid) to something other than root, which could be the case in some | |
1844 | special configurations. */ | |
1845 | ||
1846 | real_uid = getuid(); | |
1847 | real_gid = getgid(); | |
1848 | ||
1849 | if (real_uid == root_uid) | |
1850 | { | |
1670ef10 PP |
1851 | rv = setgid(real_gid); |
1852 | if (rv) | |
1853 | { | |
1854 | fprintf(stderr, "exim: setgid(%ld) failed: %s\n", | |
1855 | (long int)real_gid, strerror(errno)); | |
1856 | exit(EXIT_FAILURE); | |
1857 | } | |
1858 | rv = setuid(real_uid); | |
1859 | if (rv) | |
1860 | { | |
1861 | fprintf(stderr, "exim: setuid(%ld) failed: %s\n", | |
1862 | (long int)real_uid, strerror(errno)); | |
1863 | exit(EXIT_FAILURE); | |
1864 | } | |
059ec3d9 PH |
1865 | } |
1866 | ||
1867 | /* If neither the original real uid nor the original euid was root, Exim is | |
1868 | running in an unprivileged state. */ | |
1869 | ||
1870 | unprivileged = (real_uid != root_uid && original_euid != root_uid); | |
1871 | ||
059ec3d9 PH |
1872 | /* Scan the program's arguments. Some can be dealt with right away; others are |
1873 | simply recorded for checking and handling afterwards. Do a high-level switch | |
1874 | on the second character (the one after '-'), to save some effort. */ | |
1875 | ||
1876 | for (i = 1; i < argc; i++) | |
1877 | { | |
1878 | BOOL badarg = FALSE; | |
1879 | uschar *arg = argv[i]; | |
1880 | uschar *argrest; | |
1881 | int switchchar; | |
1882 | ||
1883 | /* An argument not starting with '-' is the start of a recipients list; | |
1884 | break out of the options-scanning loop. */ | |
1885 | ||
1886 | if (arg[0] != '-') | |
1887 | { | |
1888 | recipients_arg = i; | |
1889 | break; | |
1890 | } | |
1891 | ||
4c04137d | 1892 | /* An option consisting of -- terminates the options */ |
059ec3d9 PH |
1893 | |
1894 | if (Ustrcmp(arg, "--") == 0) | |
1895 | { | |
1896 | recipients_arg = i + 1; | |
1897 | break; | |
1898 | } | |
1899 | ||
1900 | /* Handle flagged options */ | |
1901 | ||
1902 | switchchar = arg[1]; | |
1903 | argrest = arg+2; | |
1904 | ||
1905 | /* Make all -ex options synonymous with -oex arguments, since that | |
1906 | is assumed by various callers. Also make -qR options synonymous with -R | |
1907 | options, as that seems to be required as well. Allow for -qqR too, and | |
1908 | the same for -S options. */ | |
1909 | ||
1910 | if (Ustrncmp(arg+1, "oe", 2) == 0 || | |
1911 | Ustrncmp(arg+1, "qR", 2) == 0 || | |
1912 | Ustrncmp(arg+1, "qS", 2) == 0) | |
1913 | { | |
1914 | switchchar = arg[2]; | |
1915 | argrest++; | |
1916 | } | |
1917 | else if (Ustrncmp(arg+1, "qqR", 3) == 0 || Ustrncmp(arg+1, "qqS", 3) == 0) | |
1918 | { | |
1919 | switchchar = arg[3]; | |
1920 | argrest += 2; | |
1921 | queue_2stage = TRUE; | |
1922 | } | |
1923 | ||
1924 | /* Make -r synonymous with -f, since it is a documented alias */ | |
1925 | ||
1926 | else if (arg[1] == 'r') switchchar = 'f'; | |
1927 | ||
1928 | /* Make -ov synonymous with -v */ | |
1929 | ||
1930 | else if (Ustrcmp(arg, "-ov") == 0) | |
1931 | { | |
1932 | switchchar = 'v'; | |
1933 | argrest++; | |
1934 | } | |
1935 | ||
4b2241d2 PP |
1936 | /* deal with --option_aliases */ |
1937 | else if (switchchar == '-') | |
1938 | { | |
1939 | if (Ustrcmp(argrest, "help") == 0) | |
1940 | { | |
1941 | usage_wanted = TRUE; | |
1942 | break; | |
1943 | } | |
1944 | else if (Ustrcmp(argrest, "version") == 0) | |
1945 | { | |
1946 | switchchar = 'b'; | |
73a46702 | 1947 | argrest = US"V"; |
4b2241d2 PP |
1948 | } |
1949 | } | |
1950 | ||
059ec3d9 PH |
1951 | /* High-level switch on active initial letter */ |
1952 | ||
1953 | switch(switchchar) | |
1954 | { | |
a3fb9793 PP |
1955 | |
1956 | /* sendmail uses -Ac and -Am to control which .cf file is used; | |
1957 | we ignore them. */ | |
1958 | case 'A': | |
1959 | if (*argrest == '\0') { badarg = TRUE; break; } | |
1960 | else | |
1961 | { | |
1962 | BOOL ignore = FALSE; | |
1963 | switch (*argrest) | |
1964 | { | |
1965 | case 'c': | |
1966 | case 'm': | |
1967 | if (*(argrest + 1) == '\0') | |
1968 | ignore = TRUE; | |
1969 | break; | |
1970 | } | |
1971 | if (!ignore) { badarg = TRUE; break; } | |
1972 | } | |
1973 | break; | |
1974 | ||
059ec3d9 PH |
1975 | /* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean |
1976 | so has no need of it. */ | |
1977 | ||
1978 | case 'B': | |
1979 | if (*argrest == 0) i++; /* Skip over the type */ | |
1980 | break; | |
1981 | ||
1982 | ||
1983 | case 'b': | |
1984 | receiving_message = FALSE; /* Reset TRUE for -bm, -bS, -bs below */ | |
1985 | ||
1986 | /* -bd: Run in daemon mode, awaiting SMTP connections. | |
1987 | -bdf: Ditto, but in the foreground. | |
1988 | */ | |
1989 | ||
1990 | if (*argrest == 'd') | |
1991 | { | |
1992 | daemon_listen = TRUE; | |
1993 | if (*(++argrest) == 'f') background_daemon = FALSE; | |
1994 | else if (*argrest != 0) { badarg = TRUE; break; } | |
1995 | } | |
1996 | ||
328895cc PH |
1997 | /* -be: Run in expansion test mode |
1998 | -bem: Ditto, but read a message from a file first | |
1999 | */ | |
059ec3d9 PH |
2000 | |
2001 | else if (*argrest == 'e') | |
328895cc | 2002 | { |
059ec3d9 | 2003 | expansion_test = checking = TRUE; |
328895cc PH |
2004 | if (argrest[1] == 'm') |
2005 | { | |
2006 | if (++i >= argc) { badarg = TRUE; break; } | |
2007 | expansion_test_message = argv[i]; | |
2008 | argrest++; | |
2009 | } | |
2010 | if (argrest[1] != 0) { badarg = TRUE; break; } | |
2011 | } | |
059ec3d9 | 2012 | |
f05da2e8 PH |
2013 | /* -bF: Run system filter test */ |
2014 | ||
2015 | else if (*argrest == 'F') | |
2016 | { | |
34e86e20 | 2017 | filter_test |= checking = FTEST_SYSTEM; |
f05da2e8 PH |
2018 | if (*(++argrest) != 0) { badarg = TRUE; break; } |
2019 | if (++i < argc) filter_test_sfile = argv[i]; else | |
2020 | { | |
2021 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
2022 | exit(EXIT_FAILURE); | |
2023 | } | |
2024 | } | |
2025 | ||
2026 | /* -bf: Run user filter test | |
059ec3d9 PH |
2027 | -bfd: Set domain for filter testing |
2028 | -bfl: Set local part for filter testing | |
2029 | -bfp: Set prefix for filter testing | |
2030 | -bfs: Set suffix for filter testing | |
2031 | */ | |
2032 | ||
f05da2e8 | 2033 | else if (*argrest == 'f') |
059ec3d9 | 2034 | { |
f05da2e8 | 2035 | if (*(++argrest) == 0) |
059ec3d9 | 2036 | { |
34e86e20 | 2037 | filter_test |= checking = FTEST_USER; |
f05da2e8 | 2038 | if (++i < argc) filter_test_ufile = argv[i]; else |
059ec3d9 PH |
2039 | { |
2040 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
2041 | exit(EXIT_FAILURE); | |
2042 | } | |
2043 | } | |
2044 | else | |
2045 | { | |
2046 | if (++i >= argc) | |
2047 | { | |
2048 | fprintf(stderr, "exim: string expected after %s\n", arg); | |
2049 | exit(EXIT_FAILURE); | |
2050 | } | |
2051 | if (Ustrcmp(argrest, "d") == 0) ftest_domain = argv[i]; | |
2052 | else if (Ustrcmp(argrest, "l") == 0) ftest_localpart = argv[i]; | |
2053 | else if (Ustrcmp(argrest, "p") == 0) ftest_prefix = argv[i]; | |
2054 | else if (Ustrcmp(argrest, "s") == 0) ftest_suffix = argv[i]; | |
2055 | else { badarg = TRUE; break; } | |
2056 | } | |
2057 | } | |
2058 | ||
2059 | /* -bh: Host checking - an IP address must follow. */ | |
2060 | ||
2061 | else if (Ustrcmp(argrest, "h") == 0 || Ustrcmp(argrest, "hc") == 0) | |
2062 | { | |
2063 | if (++i >= argc) { badarg = TRUE; break; } | |
2064 | sender_host_address = argv[i]; | |
2065 | host_checking = checking = log_testing_mode = TRUE; | |
2066 | host_checking_callout = argrest[1] == 'c'; | |
1a6230a3 | 2067 | message_logs = FALSE; |
059ec3d9 PH |
2068 | } |
2069 | ||
2070 | /* -bi: This option is used by sendmail to initialize *the* alias file, | |
2071 | though it has the -oA option to specify a different file. Exim has no | |
2072 | concept of *the* alias file, but since Sun's YP make script calls | |
2073 | sendmail this way, some support must be provided. */ | |
2074 | ||
2075 | else if (Ustrcmp(argrest, "i") == 0) bi_option = TRUE; | |
2076 | ||
98a90c36 PP |
2077 | /* -bI: provide information, of the type to follow after a colon. |
2078 | This is an Exim flag. */ | |
2079 | ||
2080 | else if (argrest[0] == 'I' && Ustrlen(argrest) >= 2 && argrest[1] == ':') | |
2081 | { | |
2082 | uschar *p = &argrest[2]; | |
2083 | info_flag = CMDINFO_HELP; | |
2084 | if (Ustrlen(p)) | |
2085 | { | |
2086 | if (strcmpic(p, CUS"sieve") == 0) | |
2087 | { | |
2088 | info_flag = CMDINFO_SIEVE; | |
2089 | info_stdout = TRUE; | |
2090 | } | |
36a3ae5f PP |
2091 | else if (strcmpic(p, CUS"dscp") == 0) |
2092 | { | |
2093 | info_flag = CMDINFO_DSCP; | |
2094 | info_stdout = TRUE; | |
2095 | } | |
98a90c36 PP |
2096 | else if (strcmpic(p, CUS"help") == 0) |
2097 | { | |
2098 | info_stdout = TRUE; | |
2099 | } | |
2100 | } | |
2101 | } | |
2102 | ||
059ec3d9 PH |
2103 | /* -bm: Accept and deliver message - the default option. Reinstate |
2104 | receiving_message, which got turned off for all -b options. */ | |
2105 | ||
2106 | else if (Ustrcmp(argrest, "m") == 0) receiving_message = TRUE; | |
2107 | ||
8544e77a PP |
2108 | /* -bmalware: test the filename given for malware */ |
2109 | ||
2110 | else if (Ustrcmp(argrest, "malware") == 0) | |
2111 | { | |
2112 | if (++i >= argc) { badarg = TRUE; break; } | |
34e86e20 | 2113 | checking = TRUE; |
8544e77a PP |
2114 | malware_test_file = argv[i]; |
2115 | } | |
2116 | ||
059ec3d9 PH |
2117 | /* -bnq: For locally originating messages, do not qualify unqualified |
2118 | addresses. In the envelope, this causes errors; in header lines they | |
2119 | just get left. */ | |
2120 | ||
2121 | else if (Ustrcmp(argrest, "nq") == 0) | |
2122 | { | |
2123 | allow_unqualified_sender = FALSE; | |
2124 | allow_unqualified_recipient = FALSE; | |
2125 | } | |
2126 | ||
2127 | /* -bpxx: List the contents of the mail queue, in various forms. If | |
2128 | the option is -bpc, just a queue count is needed. Otherwise, if the | |
2129 | first letter after p is r, then order is random. */ | |
2130 | ||
2131 | else if (*argrest == 'p') | |
2132 | { | |
2133 | if (*(++argrest) == 'c') | |
2134 | { | |
2135 | count_queue = TRUE; | |
2136 | if (*(++argrest) != 0) badarg = TRUE; | |
2137 | break; | |
2138 | } | |
2139 | ||
2140 | if (*argrest == 'r') | |
2141 | { | |
2142 | list_queue_option = 8; | |
2143 | argrest++; | |
2144 | } | |
2145 | else list_queue_option = 0; | |
2146 | ||
2147 | list_queue = TRUE; | |
2148 | ||
2149 | /* -bp: List the contents of the mail queue, top-level only */ | |
2150 | ||
2151 | if (*argrest == 0) {} | |
2152 | ||
2153 | /* -bpu: List the contents of the mail queue, top-level undelivered */ | |
2154 | ||
2155 | else if (Ustrcmp(argrest, "u") == 0) list_queue_option += 1; | |
2156 | ||
2157 | /* -bpa: List the contents of the mail queue, including all delivered */ | |
2158 | ||
2159 | else if (Ustrcmp(argrest, "a") == 0) list_queue_option += 2; | |
2160 | ||
2161 | /* Unknown after -bp[r] */ | |
2162 | ||
2163 | else | |
2164 | { | |
2165 | badarg = TRUE; | |
2166 | break; | |
2167 | } | |
2168 | } | |
2169 | ||
2170 | ||
2171 | /* -bP: List the configuration variables given as the address list. | |
2172 | Force -v, so configuration errors get displayed. */ | |
2173 | ||
2174 | else if (Ustrcmp(argrest, "P") == 0) | |
2175 | { | |
bf3c2c6b HSHR |
2176 | /* -bP config: we need to setup here, because later, |
2177 | * when list_options is checked, the config is read already */ | |
2178 | if (argv[i+1] && Ustrcmp(argv[i+1], "config") == 0) | |
2179 | { | |
2180 | list_config = TRUE; | |
2181 | readconf_save_config(version_string); | |
2182 | } | |
2183 | else | |
2184 | { | |
2185 | list_options = TRUE; | |
2186 | debug_selector |= D_v; | |
2187 | debug_file = stderr; | |
2188 | } | |
059ec3d9 PH |
2189 | } |
2190 | ||
2191 | /* -brt: Test retry configuration lookup */ | |
2192 | ||
2193 | else if (Ustrcmp(argrest, "rt") == 0) | |
2194 | { | |
34e86e20 | 2195 | checking = TRUE; |
059ec3d9 PH |
2196 | test_retry_arg = i + 1; |
2197 | goto END_ARG; | |
2198 | } | |
2199 | ||
2200 | /* -brw: Test rewrite configuration */ | |
2201 | ||
2202 | else if (Ustrcmp(argrest, "rw") == 0) | |
2203 | { | |
34e86e20 | 2204 | checking = TRUE; |
059ec3d9 PH |
2205 | test_rewrite_arg = i + 1; |
2206 | goto END_ARG; | |
2207 | } | |
2208 | ||
2209 | /* -bS: Read SMTP commands on standard input, but produce no replies - | |
2210 | all errors are reported by sending messages. */ | |
2211 | ||
2212 | else if (Ustrcmp(argrest, "S") == 0) | |
2213 | smtp_input = smtp_batched_input = receiving_message = TRUE; | |
2214 | ||
2215 | /* -bs: Read SMTP commands on standard input and produce SMTP replies | |
2216 | on standard output. */ | |
2217 | ||
2218 | else if (Ustrcmp(argrest, "s") == 0) smtp_input = receiving_message = TRUE; | |
2219 | ||
2220 | /* -bt: address testing mode */ | |
2221 | ||
2222 | else if (Ustrcmp(argrest, "t") == 0) | |
2223 | address_test_mode = checking = log_testing_mode = TRUE; | |
2224 | ||
2225 | /* -bv: verify addresses */ | |
2226 | ||
2227 | else if (Ustrcmp(argrest, "v") == 0) | |
2228 | verify_address_mode = checking = log_testing_mode = TRUE; | |
2229 | ||
2230 | /* -bvs: verify sender addresses */ | |
2231 | ||
2232 | else if (Ustrcmp(argrest, "vs") == 0) | |
2233 | { | |
2234 | verify_address_mode = checking = log_testing_mode = TRUE; | |
2235 | verify_as_sender = TRUE; | |
2236 | } | |
2237 | ||
2238 | /* -bV: Print version string and support details */ | |
2239 | ||
2240 | else if (Ustrcmp(argrest, "V") == 0) | |
2241 | { | |
2242 | printf("Exim version %s #%s built %s\n", version_string, | |
2243 | version_cnumber, version_date); | |
2244 | printf("%s\n", CS version_copyright); | |
2245 | version_printed = TRUE; | |
2246 | show_whats_supported(stdout); | |
b25c9675 | 2247 | log_testing_mode = TRUE; |
059ec3d9 PH |
2248 | } |
2249 | ||
9ee44efb PP |
2250 | /* -bw: inetd wait mode, accept a listening socket as stdin */ |
2251 | ||
2252 | else if (*argrest == 'w') | |
2253 | { | |
2254 | inetd_wait_mode = TRUE; | |
2255 | background_daemon = FALSE; | |
2256 | daemon_listen = TRUE; | |
2257 | if (*(++argrest) != '\0') | |
2258 | { | |
2259 | inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE); | |
2260 | if (inetd_wait_timeout <= 0) | |
2261 | { | |
2262 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); | |
2263 | exit(EXIT_FAILURE); | |
2264 | } | |
2265 | } | |
2266 | } | |
2267 | ||
059ec3d9 PH |
2268 | else badarg = TRUE; |
2269 | break; | |
2270 | ||
2271 | ||
2272 | /* -C: change configuration file list; ignore if it isn't really | |
2273 | a change! Enforce a prefix check if required. */ | |
2274 | ||
2275 | case 'C': | |
2276 | if (*argrest == 0) | |
2277 | { | |
2278 | if(++i < argc) argrest = argv[i]; else | |
2279 | { badarg = TRUE; break; } | |
2280 | } | |
2281 | if (Ustrcmp(config_main_filelist, argrest) != 0) | |
2282 | { | |
2283 | #ifdef ALT_CONFIG_PREFIX | |
2284 | int sep = 0; | |
2285 | int len = Ustrlen(ALT_CONFIG_PREFIX); | |
863bd541 | 2286 | const uschar *list = argrest; |
059ec3d9 PH |
2287 | uschar *filename; |
2288 | while((filename = string_nextinlist(&list, &sep, big_buffer, | |
2289 | big_buffer_size)) != NULL) | |
2290 | { | |
2291 | if ((Ustrlen(filename) < len || | |
2292 | Ustrncmp(filename, ALT_CONFIG_PREFIX, len) != 0 || | |
2293 | Ustrstr(filename, "/../") != NULL) && | |
2294 | (Ustrcmp(filename, "/dev/null") != 0 || real_uid != root_uid)) | |
2295 | { | |
2296 | fprintf(stderr, "-C Permission denied\n"); | |
2297 | exit(EXIT_FAILURE); | |
2298 | } | |
2299 | } | |
2300 | #endif | |
261dc43e DW |
2301 | if (real_uid != root_uid) |
2302 | { | |
90b6341f | 2303 | #ifdef TRUSTED_CONFIG_LIST |
261dc43e | 2304 | |
90b6341f DW |
2305 | if (real_uid != exim_uid |
2306 | #ifdef CONFIGURE_OWNER | |
2307 | && real_uid != config_uid | |
2308 | #endif | |
2309 | ) | |
261dc43e DW |
2310 | trusted_config = FALSE; |
2311 | else | |
2312 | { | |
90b6341f | 2313 | FILE *trust_list = Ufopen(TRUSTED_CONFIG_LIST, "rb"); |
261dc43e DW |
2314 | if (trust_list) |
2315 | { | |
2316 | struct stat statbuf; | |
2317 | ||
2318 | if (fstat(fileno(trust_list), &statbuf) != 0 || | |
2319 | (statbuf.st_uid != root_uid /* owner not root */ | |
2320 | #ifdef CONFIGURE_OWNER | |
2321 | && statbuf.st_uid != config_uid /* owner not the special one */ | |
2322 | #endif | |
2323 | ) || /* or */ | |
2324 | (statbuf.st_gid != root_gid /* group not root */ | |
2325 | #ifdef CONFIGURE_GROUP | |
2326 | && statbuf.st_gid != config_gid /* group not the special one */ | |
2327 | #endif | |
2328 | && (statbuf.st_mode & 020) != 0 /* group writeable */ | |
2329 | ) || /* or */ | |
2330 | (statbuf.st_mode & 2) != 0) /* world writeable */ | |
2331 | { | |
2332 | trusted_config = FALSE; | |
2333 | fclose(trust_list); | |
2334 | } | |
2335 | else | |
2336 | { | |
2337 | /* Well, the trust list at least is up to scratch... */ | |
2338 | void *reset_point = store_get(0); | |
90b6341f DW |
2339 | uschar *trusted_configs[32]; |
2340 | int nr_configs = 0; | |
261dc43e DW |
2341 | int i = 0; |
2342 | ||
2343 | while (Ufgets(big_buffer, big_buffer_size, trust_list)) | |
2344 | { | |
2345 | uschar *start = big_buffer, *nl; | |
2346 | while (*start && isspace(*start)) | |
2347 | start++; | |
1e83d68b | 2348 | if (*start != '/') |
261dc43e DW |
2349 | continue; |
2350 | nl = Ustrchr(start, '\n'); | |
2351 | if (nl) | |
2352 | *nl = 0; | |
90b6341f DW |
2353 | trusted_configs[nr_configs++] = string_copy(start); |
2354 | if (nr_configs == 32) | |
261dc43e DW |
2355 | break; |
2356 | } | |
2357 | fclose(trust_list); | |
2358 | ||
90b6341f | 2359 | if (nr_configs) |
261dc43e DW |
2360 | { |
2361 | int sep = 0; | |
55414b25 | 2362 | const uschar *list = argrest; |
261dc43e DW |
2363 | uschar *filename; |
2364 | while (trusted_config && (filename = string_nextinlist(&list, | |
2365 | &sep, big_buffer, big_buffer_size)) != NULL) | |
2366 | { | |
90b6341f | 2367 | for (i=0; i < nr_configs; i++) |
261dc43e | 2368 | { |
90b6341f | 2369 | if (Ustrcmp(filename, trusted_configs[i]) == 0) |
261dc43e DW |
2370 | break; |
2371 | } | |
90b6341f | 2372 | if (i == nr_configs) |
261dc43e DW |
2373 | { |
2374 | trusted_config = FALSE; | |
2375 | break; | |
2376 | } | |
2377 | } | |
1e83d68b | 2378 | store_reset(reset_point); |
261dc43e DW |
2379 | } |
2380 | else | |
2381 | { | |
2382 | /* No valid prefixes found in trust_list file. */ | |
2383 | trusted_config = FALSE; | |
2384 | } | |
2385 | } | |
2386 | } | |
2387 | else | |
2388 | { | |
2389 | /* Could not open trust_list file. */ | |
2390 | trusted_config = FALSE; | |
2391 | } | |
2392 | } | |
2393 | #else | |
2394 | /* Not root; don't trust config */ | |
2395 | trusted_config = FALSE; | |
2396 | #endif | |
2397 | } | |
059ec3d9 PH |
2398 | |
2399 | config_main_filelist = argrest; | |
2400 | config_changed = TRUE; | |
2401 | } | |
2402 | break; | |
2403 | ||
2404 | ||
2405 | /* -D: set up a macro definition */ | |
2406 | ||
2407 | case 'D': | |
2408 | #ifdef DISABLE_D_OPTION | |
2409 | fprintf(stderr, "exim: -D is not available in this Exim binary\n"); | |
2410 | exit(EXIT_FAILURE); | |
2411 | #else | |
2412 | { | |
2413 | int ptr = 0; | |
059ec3d9 PH |
2414 | macro_item *m; |
2415 | uschar name[24]; | |
2416 | uschar *s = argrest; | |
2417 | ||
4ab69ec7 | 2418 | opt_D_used = TRUE; |
059ec3d9 PH |
2419 | while (isspace(*s)) s++; |
2420 | ||
2421 | if (*s < 'A' || *s > 'Z') | |
2422 | { | |
2423 | fprintf(stderr, "exim: macro name set by -D must start with " | |
2424 | "an upper case letter\n"); | |
2425 | exit(EXIT_FAILURE); | |
2426 | } | |
2427 | ||
2428 | while (isalnum(*s) || *s == '_') | |
2429 | { | |
2430 | if (ptr < sizeof(name)-1) name[ptr++] = *s; | |
2431 | s++; | |
2432 | } | |
2433 | name[ptr] = 0; | |
2434 | if (ptr == 0) { badarg = TRUE; break; } | |
2435 | while (isspace(*s)) s++; | |
2436 | if (*s != 0) | |
2437 | { | |
2438 | if (*s++ != '=') { badarg = TRUE; break; } | |
2439 | while (isspace(*s)) s++; | |
2440 | } | |
2441 | ||
85e03244 | 2442 | for (m = macros_user; m; m = m->next) |
1a7c9a48 JH |
2443 | if (Ustrcmp(m->name, name) == 0) |
2444 | { | |
2445 | fprintf(stderr, "exim: duplicated -D in command line\n"); | |
2446 | exit(EXIT_FAILURE); | |
2447 | } | |
059ec3d9 | 2448 | |
85e03244 | 2449 | m = macro_create(name, s, TRUE); |
059ec3d9 PH |
2450 | |
2451 | if (clmacro_count >= MAX_CLMACROS) | |
2452 | { | |
2453 | fprintf(stderr, "exim: too many -D options on command line\n"); | |
2454 | exit(EXIT_FAILURE); | |
2455 | } | |
1a7c9a48 JH |
2456 | clmacros[clmacro_count++] = string_sprintf("-D%s=%s", m->name, |
2457 | m->replacement); | |
059ec3d9 PH |
2458 | } |
2459 | #endif | |
2460 | break; | |
2461 | ||
2462 | /* -d: Set debug level (see also -v below) or set the drop_cr option. | |
8e669ac1 | 2463 | The latter is now a no-op, retained for compatibility only. If -dd is used, |
3d235903 | 2464 | debugging subprocesses of the daemon is disabled. */ |
059ec3d9 PH |
2465 | |
2466 | case 'd': | |
2467 | if (Ustrcmp(argrest, "ropcr") == 0) | |
2468 | { | |
2469 | /* drop_cr = TRUE; */ | |
2470 | } | |
2471 | ||
2472 | /* Use an intermediate variable so that we don't set debugging while | |
2473 | decoding the debugging bits. */ | |
2474 | ||
2475 | else | |
2476 | { | |
2477 | unsigned int selector = D_default; | |
2478 | debug_selector = 0; | |
2479 | debug_file = NULL; | |
3d235903 PH |
2480 | if (*argrest == 'd') |
2481 | { | |
2482 | debug_daemon = TRUE; | |
2483 | argrest++; | |
2484 | } | |
059ec3d9 | 2485 | if (*argrest != 0) |
6c6d6e48 TF |
2486 | decode_bits(&selector, 1, debug_notall, argrest, |
2487 | debug_options, debug_options_count, US"debug", 0); | |
059ec3d9 PH |
2488 | debug_selector = selector; |
2489 | } | |
2490 | break; | |
2491 | ||
2492 | ||
2493 | /* -E: This is a local error message. This option is not intended for | |
2494 | external use at all, but is not restricted to trusted callers because it | |
2495 | does no harm (just suppresses certain error messages) and if Exim is run | |
2496 | not setuid root it won't always be trusted when it generates error | |
2497 | messages using this option. If there is a message id following -E, point | |
2498 | message_reference at it, for logging. */ | |
2499 | ||
2500 | case 'E': | |
2501 | local_error_message = TRUE; | |
2502 | if (mac_ismsgid(argrest)) message_reference = argrest; | |
2503 | break; | |
2504 | ||
2505 | ||
2506 | /* -ex: The vacation program calls sendmail with the undocumented "-eq" | |
2507 | option, so it looks as if historically the -oex options are also callable | |
2508 | without the leading -o. So we have to accept them. Before the switch, | |
2509 | anything starting -oe has been converted to -e. Exim does not support all | |
2510 | of the sendmail error options. */ | |
2511 | ||
2512 | case 'e': | |
2513 | if (Ustrcmp(argrest, "e") == 0) | |
2514 | { | |
2515 | arg_error_handling = ERRORS_SENDER; | |
2516 | errors_sender_rc = EXIT_SUCCESS; | |
2517 | } | |
2518 | else if (Ustrcmp(argrest, "m") == 0) arg_error_handling = ERRORS_SENDER; | |
2519 | else if (Ustrcmp(argrest, "p") == 0) arg_error_handling = ERRORS_STDERR; | |
2520 | else if (Ustrcmp(argrest, "q") == 0) arg_error_handling = ERRORS_STDERR; | |
2521 | else if (Ustrcmp(argrest, "w") == 0) arg_error_handling = ERRORS_SENDER; | |
2522 | else badarg = TRUE; | |
2523 | break; | |
2524 | ||
2525 | ||
2526 | /* -F: Set sender's full name, used instead of the gecos entry from | |
2527 | the password file. Since users can usually alter their gecos entries, | |
2528 | there's no security involved in using this instead. The data can follow | |
2529 | the -F or be in the next argument. */ | |
2530 | ||
2531 | case 'F': | |
2532 | if (*argrest == 0) | |
2533 | { | |
2534 | if(++i < argc) argrest = argv[i]; else | |
2535 | { badarg = TRUE; break; } | |
2536 | } | |
2537 | originator_name = argrest; | |
2fe1a124 | 2538 | sender_name_forced = TRUE; |
059ec3d9 PH |
2539 | break; |
2540 | ||
2541 | ||
2542 | /* -f: Set sender's address - this value is only actually used if Exim is | |
2543 | run by a trusted user, or if untrusted_set_sender is set and matches the | |
2544 | address, except that the null address can always be set by any user. The | |
2545 | test for this happens later, when the value given here is ignored when not | |
2546 | permitted. For an untrusted user, the actual sender is still put in Sender: | |
2547 | if it doesn't match the From: header (unless no_local_from_check is set). | |
2548 | The data can follow the -f or be in the next argument. The -r switch is an | |
2549 | obsolete form of -f but since there appear to be programs out there that | |
2550 | use anything that sendmail has ever supported, better accept it - the | |
2551 | synonymizing is done before the switch above. | |
2552 | ||
2553 | At this stage, we must allow domain literal addresses, because we don't | |
2554 | know what the setting of allow_domain_literals is yet. Ditto for trailing | |
2555 | dots and strip_trailing_dot. */ | |
2556 | ||
2557 | case 'f': | |
2558 | { | |
250b6871 | 2559 | int dummy_start, dummy_end; |
059ec3d9 PH |
2560 | uschar *errmess; |
2561 | if (*argrest == 0) | |
2562 | { | |
2563 | if (i+1 < argc) argrest = argv[++i]; else | |
2564 | { badarg = TRUE; break; } | |
2565 | } | |
2566 | if (*argrest == 0) | |
059ec3d9 | 2567 | sender_address = string_sprintf(""); /* Ensure writeable memory */ |
059ec3d9 PH |
2568 | else |
2569 | { | |
2570 | uschar *temp = argrest + Ustrlen(argrest) - 1; | |
2571 | while (temp >= argrest && isspace(*temp)) temp--; | |
2572 | if (temp >= argrest && *temp == '.') f_end_dot = TRUE; | |
2573 | allow_domain_literals = TRUE; | |
2574 | strip_trailing_dot = TRUE; | |
8c5d388a | 2575 | #ifdef SUPPORT_I18N |
250b6871 JH |
2576 | allow_utf8_domains = TRUE; |
2577 | #endif | |
2578 | sender_address = parse_extract_address(argrest, &errmess, | |
2579 | &dummy_start, &dummy_end, &sender_address_domain, TRUE); | |
8c5d388a | 2580 | #ifdef SUPPORT_I18N |
250b6871 JH |
2581 | message_smtputf8 = string_is_utf8(sender_address); |
2582 | allow_utf8_domains = FALSE; | |
2583 | #endif | |
059ec3d9 PH |
2584 | allow_domain_literals = FALSE; |
2585 | strip_trailing_dot = FALSE; | |
2586 | if (sender_address == NULL) | |
2587 | { | |
2588 | fprintf(stderr, "exim: bad -f address \"%s\": %s\n", argrest, errmess); | |
2589 | return EXIT_FAILURE; | |
2590 | } | |
2591 | } | |
2592 | sender_address_forced = TRUE; | |
2593 | } | |
2594 | break; | |
2595 | ||
a3fb9793 | 2596 | /* -G: sendmail invocation to specify that it's a gateway submission and |
f4ee74ac PP |
2597 | sendmail may complain about problems instead of fixing them. |
2598 | We make it equivalent to an ACL "control = suppress_local_fixups" and do | |
2599 | not at this time complain about problems. */ | |
059ec3d9 PH |
2600 | |
2601 | case 'G': | |
f4ee74ac | 2602 | flag_G = TRUE; |
059ec3d9 PH |
2603 | break; |
2604 | ||
2605 | /* -h: Set the hop count for an incoming message. Exim does not currently | |
2606 | support this; it always computes it by counting the Received: headers. | |
2607 | To put it in will require a change to the spool header file format. */ | |
2608 | ||
2609 | case 'h': | |
2610 | if (*argrest == 0) | |
2611 | { | |
2612 | if(++i < argc) argrest = argv[i]; else | |
2613 | { badarg = TRUE; break; } | |
2614 | } | |
2615 | if (!isdigit(*argrest)) badarg = TRUE; | |
2616 | break; | |
2617 | ||
2618 | ||
2619 | /* -i: Set flag so dot doesn't end non-SMTP input (same as -oi, seems | |
2620 | not to be documented for sendmail but mailx (at least) uses it) */ | |
2621 | ||
2622 | case 'i': | |
2623 | if (*argrest == 0) dot_ends = FALSE; else badarg = TRUE; | |
2624 | break; | |
2625 | ||
2626 | ||
a3fb9793 PP |
2627 | /* -L: set the identifier used for syslog; equivalent to setting |
2628 | syslog_processname in the config file, but needs to be an admin option. */ | |
2629 | ||
2630 | case 'L': | |
2631 | if (*argrest == '\0') | |
2632 | { | |
2633 | if(++i < argc) argrest = argv[i]; else | |
2634 | { badarg = TRUE; break; } | |
2635 | } | |
2636 | sz = Ustrlen(argrest); | |
2637 | if (sz > 32) | |
2638 | { | |
2639 | fprintf(stderr, "exim: the -L syslog name is too long: \"%s\"\n", argrest); | |
2640 | return EXIT_FAILURE; | |
2641 | } | |
2642 | if (sz < 1) | |
2643 | { | |
2644 | fprintf(stderr, "exim: the -L syslog name is too short\n"); | |
2645 | return EXIT_FAILURE; | |
2646 | } | |
2647 | cmdline_syslog_name = argrest; | |
2648 | break; | |
2649 | ||
059ec3d9 PH |
2650 | case 'M': |
2651 | receiving_message = FALSE; | |
2652 | ||
2653 | /* -MC: continue delivery of another message via an existing open | |
2654 | file descriptor. This option is used for an internal call by the | |
2655 | smtp transport when there is a pending message waiting to go to an | |
2656 | address to which it has got a connection. Five subsequent arguments are | |
2657 | required: transport name, host name, IP address, sequence number, and | |
2658 | message_id. Transports may decline to create new processes if the sequence | |
2659 | number gets too big. The channel is stdin. This (-MC) must be the last | |
2660 | argument. There's a subsequent check that the real-uid is privileged. | |
2661 | ||
2662 | If we are running in the test harness. delay for a bit, to let the process | |
2663 | that set this one up complete. This makes for repeatability of the logging, | |
2664 | etc. output. */ | |
2665 | ||
2666 | if (Ustrcmp(argrest, "C") == 0) | |
2667 | { | |
41c7c167 PH |
2668 | union sockaddr_46 interface_sock; |
2669 | EXIM_SOCKLEN_T size = sizeof(interface_sock); | |
2670 | ||
059ec3d9 PH |
2671 | if (argc != i + 6) |
2672 | { | |
2673 | fprintf(stderr, "exim: too many or too few arguments after -MC\n"); | |
2674 | return EXIT_FAILURE; | |
2675 | } | |
2676 | ||
2677 | if (msg_action_arg >= 0) | |
2678 | { | |
2679 | fprintf(stderr, "exim: incompatible arguments\n"); | |
2680 | return EXIT_FAILURE; | |
2681 | } | |
2682 | ||
2683 | continue_transport = argv[++i]; | |
2684 | continue_hostname = argv[++i]; | |
2685 | continue_host_address = argv[++i]; | |
2686 | continue_sequence = Uatoi(argv[++i]); | |
2687 | msg_action = MSG_DELIVER; | |
2688 | msg_action_arg = ++i; | |
2689 | forced_delivery = TRUE; | |
2690 | queue_run_pid = passed_qr_pid; | |
2691 | queue_run_pipe = passed_qr_pipe; | |
2692 | ||
2693 | if (!mac_ismsgid(argv[i])) | |
2694 | { | |
2695 | fprintf(stderr, "exim: malformed message id %s after -MC option\n", | |
2696 | argv[i]); | |
2697 | return EXIT_FAILURE; | |
2698 | } | |
2699 | ||
875512a3 JH |
2700 | /* Set up $sending_ip_address and $sending_port, unless proxied */ |
2701 | ||
5013d912 | 2702 | if (!continue_proxy_cipher) |
875512a3 JH |
2703 | if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock), |
2704 | &size) == 0) | |
2705 | sending_ip_address = host_ntoa(-1, &interface_sock, NULL, | |
2706 | &sending_port); | |
2707 | else | |
2708 | { | |
2709 | fprintf(stderr, "exim: getsockname() failed after -MC option: %s\n", | |
2710 | strerror(errno)); | |
2711 | return EXIT_FAILURE; | |
2712 | } | |
41c7c167 | 2713 | |
059ec3d9 PH |
2714 | if (running_in_test_harness) millisleep(500); |
2715 | break; | |
2716 | } | |
2717 | ||
2d14f397 JH |
2718 | else if (*argrest == 'C' && argrest[1] && !argrest[2]) |
2719 | { | |
875512a3 | 2720 | switch(argrest[1]) |
2d14f397 | 2721 | { |
059ec3d9 PH |
2722 | /* -MCA: set the smtp_authenticated flag; this is useful only when it |
2723 | precedes -MC (see above). The flag indicates that the host to which | |
2724 | Exim is connected has accepted an AUTH sequence. */ | |
2725 | ||
2d14f397 | 2726 | case 'A': smtp_authenticated = TRUE; break; |
059ec3d9 | 2727 | |
6c1c3d1d WB |
2728 | /* -MCD: set the smtp_use_dsn flag; this indicates that the host |
2729 | that exim is connected to supports the esmtp extension DSN */ | |
28b3821f | 2730 | |
14de8063 | 2731 | case 'D': smtp_peer_options |= OPTION_DSN; break; |
6c1c3d1d | 2732 | |
e37f8a84 | 2733 | /* -MCG: set the queue name, to a non-default value */ |
28b3821f | 2734 | |
2d14f397 JH |
2735 | case 'G': if (++i < argc) queue_name = string_copy(argv[i]); |
2736 | else badarg = TRUE; | |
2737 | break; | |
2738 | ||
2739 | /* -MCK: the peer offered CHUNKING. Must precede -MC */ | |
2740 | ||
14de8063 | 2741 | case 'K': smtp_peer_options |= OPTION_CHUNKING; break; |
28b3821f | 2742 | |
059ec3d9 PH |
2743 | /* -MCP: set the smtp_use_pipelining flag; this is useful only when |
2744 | it preceded -MC (see above) */ | |
2745 | ||
14de8063 | 2746 | case 'P': smtp_peer_options |= OPTION_PIPE; break; |
059ec3d9 PH |
2747 | |
2748 | /* -MCQ: pass on the pid of the queue-running process that started | |
2749 | this chain of deliveries and the fd of its synchronizing pipe; this | |
2750 | is useful only when it precedes -MC (see above) */ | |
2751 | ||
2d14f397 JH |
2752 | case 'Q': if (++i < argc) passed_qr_pid = (pid_t)(Uatol(argv[i])); |
2753 | else badarg = TRUE; | |
2754 | if (++i < argc) passed_qr_pipe = (int)(Uatol(argv[i])); | |
2755 | else badarg = TRUE; | |
2756 | break; | |
059ec3d9 PH |
2757 | |
2758 | /* -MCS: set the smtp_use_size flag; this is useful only when it | |
2759 | precedes -MC (see above) */ | |
2760 | ||
14de8063 | 2761 | case 'S': smtp_peer_options |= OPTION_SIZE; break; |
059ec3d9 | 2762 | |
2d14f397 | 2763 | #ifdef SUPPORT_TLS |
875512a3 JH |
2764 | /* -MCt: similar to -MCT below but the connection is still open |
2765 | via a proxy proces which handles the TLS context and coding. | |
5013d912 JH |
2766 | Require three arguments for the proxied local address and port, |
2767 | and the TLS cipher. */ | |
875512a3 | 2768 | |
5013d912 | 2769 | case 't': if (++i < argc) sending_ip_address = argv[i]; |
875512a3 JH |
2770 | else badarg = TRUE; |
2771 | if (++i < argc) sending_port = (int)(Uatol(argv[i])); | |
2772 | else badarg = TRUE; | |
5013d912 JH |
2773 | if (++i < argc) continue_proxy_cipher = argv[i]; |
2774 | else badarg = TRUE; | |
875512a3 JH |
2775 | /*FALLTHROUGH*/ |
2776 | ||
059ec3d9 PH |
2777 | /* -MCT: set the tls_offered flag; this is useful only when it |
2778 | precedes -MC (see above). The flag indicates that the host to which | |
2779 | Exim is connected has offered TLS support. */ | |
2780 | ||
14de8063 | 2781 | case 'T': smtp_peer_options |= OPTION_TLS; break; |
2d14f397 JH |
2782 | #endif |
2783 | ||
2784 | default: badarg = TRUE; break; | |
2785 | } | |
2786 | break; | |
059ec3d9 | 2787 | } |
059ec3d9 PH |
2788 | |
2789 | /* -M[x]: various operations on the following list of message ids: | |
2790 | -M deliver the messages, ignoring next retry times and thawing | |
2791 | -Mc deliver the messages, checking next retry times, no thawing | |
2792 | -Mf freeze the messages | |
2793 | -Mg give up on the messages | |
2794 | -Mt thaw the messages | |
2795 | -Mrm remove the messages | |
2796 | In the above cases, this must be the last option. There are also the | |
2797 | following options which are followed by a single message id, and which | |
2798 | act on that message. Some of them use the "recipient" addresses as well. | |
2799 | -Mar add recipient(s) | |
2800 | -Mmad mark all recipients delivered | |
2801 | -Mmd mark recipients(s) delivered | |
2802 | -Mes edit sender | |
0ef732d9 | 2803 | -Mset load a message for use with -be |
059ec3d9 | 2804 | -Mvb show body |
a96603a0 | 2805 | -Mvc show copy (of whole message, in RFC 2822 format) |
059ec3d9 PH |
2806 | -Mvh show header |
2807 | -Mvl show log | |
2808 | */ | |
2809 | ||
2810 | else if (*argrest == 0) | |
2811 | { | |
2812 | msg_action = MSG_DELIVER; | |
2813 | forced_delivery = deliver_force_thaw = TRUE; | |
2814 | } | |
2815 | else if (Ustrcmp(argrest, "ar") == 0) | |
2816 | { | |
2817 | msg_action = MSG_ADD_RECIPIENT; | |
2818 | one_msg_action = TRUE; | |
2819 | } | |
2820 | else if (Ustrcmp(argrest, "c") == 0) msg_action = MSG_DELIVER; | |
2821 | else if (Ustrcmp(argrest, "es") == 0) | |
2822 | { | |
2823 | msg_action = MSG_EDIT_SENDER; | |
2824 | one_msg_action = TRUE; | |
2825 | } | |
2826 | else if (Ustrcmp(argrest, "f") == 0) msg_action = MSG_FREEZE; | |
2827 | else if (Ustrcmp(argrest, "g") == 0) | |
2828 | { | |
2829 | msg_action = MSG_DELIVER; | |
2830 | deliver_give_up = TRUE; | |
2831 | } | |
2832 | else if (Ustrcmp(argrest, "mad") == 0) | |
2833 | { | |
2834 | msg_action = MSG_MARK_ALL_DELIVERED; | |
2835 | } | |
2836 | else if (Ustrcmp(argrest, "md") == 0) | |
2837 | { | |
2838 | msg_action = MSG_MARK_DELIVERED; | |
2839 | one_msg_action = TRUE; | |
2840 | } | |
2841 | else if (Ustrcmp(argrest, "rm") == 0) msg_action = MSG_REMOVE; | |
0ef732d9 PH |
2842 | else if (Ustrcmp(argrest, "set") == 0) |
2843 | { | |
2844 | msg_action = MSG_LOAD; | |
2845 | one_msg_action = TRUE; | |
2846 | } | |
059ec3d9 PH |
2847 | else if (Ustrcmp(argrest, "t") == 0) msg_action = MSG_THAW; |
2848 | else if (Ustrcmp(argrest, "vb") == 0) | |
2849 | { | |
2850 | msg_action = MSG_SHOW_BODY; | |
2851 | one_msg_action = TRUE; | |
2852 | } | |
a96603a0 PH |
2853 | else if (Ustrcmp(argrest, "vc") == 0) |
2854 | { | |
2855 | msg_action = MSG_SHOW_COPY; | |
2856 | one_msg_action = TRUE; | |
2857 | } | |
059ec3d9 PH |
2858 | else if (Ustrcmp(argrest, "vh") == 0) |
2859 | { | |
2860 | msg_action = MSG_SHOW_HEADER; | |
2861 | one_msg_action = TRUE; | |
2862 | } | |
2863 | else if (Ustrcmp(argrest, "vl") == 0) | |
2864 | { | |
2865 | msg_action = MSG_SHOW_LOG; | |
2866 | one_msg_action = TRUE; | |
2867 | } | |
2868 | else { badarg = TRUE; break; } | |
2869 | ||
2870 | /* All the -Mxx options require at least one message id. */ | |
2871 | ||
2872 | msg_action_arg = i + 1; | |
2873 | if (msg_action_arg >= argc) | |
2874 | { | |
2875 | fprintf(stderr, "exim: no message ids given after %s option\n", arg); | |
2876 | return EXIT_FAILURE; | |
2877 | } | |
2878 | ||
2879 | /* Some require only message ids to follow */ | |
2880 | ||
2881 | if (!one_msg_action) | |
2882 | { | |
2883 | int j; | |
2884 | for (j = msg_action_arg; j < argc; j++) if (!mac_ismsgid(argv[j])) | |
2885 | { | |
2886 | fprintf(stderr, "exim: malformed message id %s after %s option\n", | |
2887 | argv[j], arg); | |
2888 | return EXIT_FAILURE; | |
2889 | } | |
2890 | goto END_ARG; /* Remaining args are ids */ | |
2891 | } | |
2892 | ||
2893 | /* Others require only one message id, possibly followed by addresses, | |
2894 | which will be handled as normal arguments. */ | |
2895 | ||
2896 | else | |
2897 | { | |
2898 | if (!mac_ismsgid(argv[msg_action_arg])) | |
2899 | { | |
2900 | fprintf(stderr, "exim: malformed message id %s after %s option\n", | |
2901 | argv[msg_action_arg], arg); | |
2902 | return EXIT_FAILURE; | |
2903 | } | |
2904 | i++; | |
2905 | } | |
2906 | break; | |
2907 | ||
2908 | ||
2909 | /* Some programs seem to call the -om option without the leading o; | |
2910 | for sendmail it askes for "me too". Exim always does this. */ | |
2911 | ||
2912 | case 'm': | |
2913 | if (*argrest != 0) badarg = TRUE; | |
2914 | break; | |
2915 | ||
2916 | ||
2917 | /* -N: don't do delivery - a debugging option that stops transports doing | |
2918 | their thing. It implies debugging at the D_v level. */ | |
2919 | ||
2920 | case 'N': | |
2921 | if (*argrest == 0) | |
2922 | { | |
2923 | dont_deliver = TRUE; | |
2924 | debug_selector |= D_v; | |
2925 | debug_file = stderr; | |
2926 | } | |
2927 | else badarg = TRUE; | |
2928 | break; | |
2929 | ||
2930 | ||
12f69989 PP |
2931 | /* -n: This means "don't alias" in sendmail, apparently. |
2932 | For normal invocations, it has no effect. | |
2933 | It may affect some other options. */ | |
059ec3d9 PH |
2934 | |
2935 | case 'n': | |
12f69989 | 2936 | flag_n = TRUE; |
059ec3d9 PH |
2937 | break; |
2938 | ||
2939 | /* -O: Just ignore it. In sendmail, apparently -O option=value means set | |
2940 | option to the specified value. This form uses long names. We need to handle | |
2941 | -O option=value and -Ooption=value. */ | |
2942 | ||
2943 | case 'O': | |
2944 | if (*argrest == 0) | |
2945 | { | |
2946 | if (++i >= argc) | |
2947 | { | |
2948 | fprintf(stderr, "exim: string expected after -O\n"); | |
2949 | exit(EXIT_FAILURE); | |
2950 | } | |
2951 | } | |
2952 | break; | |
2953 | ||
2954 | case 'o': | |
2955 | ||
2956 | /* -oA: Set an argument for the bi command (sendmail's "alternate alias | |
2957 | file" option). */ | |
2958 | ||
2959 | if (*argrest == 'A') | |
2960 | { | |
2961 | alias_arg = argrest + 1; | |
2962 | if (alias_arg[0] == 0) | |
2963 | { | |
2964 | if (i+1 < argc) alias_arg = argv[++i]; else | |
2965 | { | |
2966 | fprintf(stderr, "exim: string expected after -oA\n"); | |
2967 | exit(EXIT_FAILURE); | |
2968 | } | |
2969 | } | |
2970 | } | |
2971 | ||
2972 | /* -oB: Set a connection message max value for remote deliveries */ | |
2973 | ||
2974 | else if (*argrest == 'B') | |
2975 | { | |
2976 | uschar *p = argrest + 1; | |
2977 | if (p[0] == 0) | |
2978 | { | |
2979 | if (i+1 < argc && isdigit((argv[i+1][0]))) p = argv[++i]; else | |
2980 | { | |
2981 | connection_max_messages = 1; | |
2982 | p = NULL; | |
2983 | } | |
2984 | } | |
2985 | ||
2986 | if (p != NULL) | |
2987 | { | |
2988 | if (!isdigit(*p)) | |
2989 | { | |
2990 | fprintf(stderr, "exim: number expected after -oB\n"); | |
2991 | exit(EXIT_FAILURE); | |
2992 | } | |
2993 | connection_max_messages = Uatoi(p); | |
2994 | } | |
2995 | } | |
2996 | ||
2997 | /* -odb: background delivery */ | |
2998 | ||
2999 | else if (Ustrcmp(argrest, "db") == 0) | |
3000 | { | |
3001 | synchronous_delivery = FALSE; | |
3002 | arg_queue_only = FALSE; | |
3003 | queue_only_set = TRUE; | |
3004 | } | |
3005 | ||
3006 | /* -odf: foreground delivery (smail-compatible option); same effect as | |
3007 | -odi: interactive (synchronous) delivery (sendmail-compatible option) | |
3008 | */ | |
3009 | ||
3010 | else if (Ustrcmp(argrest, "df") == 0 || Ustrcmp(argrest, "di") == 0) | |
3011 | { | |
3012 | synchronous_delivery = TRUE; | |
3013 | arg_queue_only = FALSE; | |
3014 | queue_only_set = TRUE; | |
3015 | } | |
3016 | ||
3017 | /* -odq: queue only */ | |
3018 | ||
3019 | else if (Ustrcmp(argrest, "dq") == 0) | |
3020 | { | |
3021 | synchronous_delivery = FALSE; | |
3022 | arg_queue_only = TRUE; | |
3023 | queue_only_set = TRUE; | |
3024 | } | |
3025 | ||
3026 | /* -odqs: queue SMTP only - do local deliveries and remote routing, | |
3027 | but no remote delivery */ | |
3028 | ||
3029 | else if (Ustrcmp(argrest, "dqs") == 0) | |
3030 | { | |
3031 | queue_smtp = TRUE; | |
3032 | arg_queue_only = FALSE; | |
3033 | queue_only_set = TRUE; | |
3034 | } | |
3035 | ||
3036 | /* -oex: Sendmail error flags. As these are also accepted without the | |
3037 | leading -o prefix, for compatibility with vacation and other callers, | |
3038 | they are handled with -e above. */ | |
3039 | ||
3040 | /* -oi: Set flag so dot doesn't end non-SMTP input (same as -i) | |
3041 | -oitrue: Another sendmail syntax for the same */ | |
3042 | ||
3043 | else if (Ustrcmp(argrest, "i") == 0 || | |
3044 | Ustrcmp(argrest, "itrue") == 0) | |
3045 | dot_ends = FALSE; | |
3046 | ||
3047 | /* -oM*: Set various characteristics for an incoming message; actually | |
3048 | acted on for trusted callers only. */ | |
3049 | ||
3050 | else if (*argrest == 'M') | |
3051 | { | |
3052 | if (i+1 >= argc) | |
3053 | { | |
3054 | fprintf(stderr, "exim: data expected after -o%s\n", argrest); | |
3055 | exit(EXIT_FAILURE); | |
3056 | } | |
3057 | ||
3058 | /* -oMa: Set sender host address */ | |
3059 | ||
3060 | if (Ustrcmp(argrest, "Ma") == 0) sender_host_address = argv[++i]; | |
3061 | ||
3062 | /* -oMaa: Set authenticator name */ | |
3063 | ||
3064 | else if (Ustrcmp(argrest, "Maa") == 0) | |
3065 | sender_host_authenticated = argv[++i]; | |
3066 | ||
3067 | /* -oMas: setting authenticated sender */ | |
3068 | ||
3069 | else if (Ustrcmp(argrest, "Mas") == 0) authenticated_sender = argv[++i]; | |
3070 | ||
3071 | /* -oMai: setting authenticated id */ | |
3072 | ||
3073 | else if (Ustrcmp(argrest, "Mai") == 0) authenticated_id = argv[++i]; | |
3074 | ||
3075 | /* -oMi: Set incoming interface address */ | |
3076 | ||
3077 | else if (Ustrcmp(argrest, "Mi") == 0) interface_address = argv[++i]; | |
3078 | ||
d2af03f4 HS |
3079 | /* -oMm: Message reference */ |
3080 | ||
3081 | else if (Ustrcmp(argrest, "Mm") == 0) | |
3082 | { | |
3083 | if (!mac_ismsgid(argv[i+1])) | |
3084 | { | |
3085 | fprintf(stderr,"-oMm must be a valid message ID\n"); | |
3086 | exit(EXIT_FAILURE); | |
3087 | } | |
3088 | if (!trusted_config) | |
3089 | { | |
3090 | fprintf(stderr,"-oMm must be called by a trusted user/config\n"); | |
3091 | exit(EXIT_FAILURE); | |
3092 | } | |
3093 | message_reference = argv[++i]; | |
3094 | } | |
3095 | ||
059ec3d9 PH |
3096 | /* -oMr: Received protocol */ |
3097 | ||
65e061b7 HSHR |
3098 | else if (Ustrcmp(argrest, "Mr") == 0) |
3099 | ||
3100 | if (received_protocol) | |
3101 | { | |
3102 | fprintf(stderr, "received_protocol is set already\n"); | |
3103 | exit(EXIT_FAILURE); | |
3104 | } | |
3105 | else received_protocol = argv[++i]; | |
059ec3d9 PH |
3106 | |
3107 | /* -oMs: Set sender host name */ | |
3108 | ||
3109 | else if (Ustrcmp(argrest, "Ms") == 0) sender_host_name = argv[++i]; | |
3110 | ||
3111 | /* -oMt: Set sender ident */ | |
3112 | ||
33d73e3b PH |
3113 | else if (Ustrcmp(argrest, "Mt") == 0) |
3114 | { | |
3115 | sender_ident_set = TRUE; | |
3116 | sender_ident = argv[++i]; | |
3117 | } | |
059ec3d9 PH |
3118 | |
3119 | /* Else a bad argument */ | |
3120 | ||
3121 | else | |
3122 | { | |
3123 | badarg = TRUE; | |
3124 | break; | |
3125 | } | |
3126 | } | |
3127 | ||
3128 | /* -om: Me-too flag for aliases. Exim always does this. Some programs | |
3129 | seem to call this as -m (undocumented), so that is also accepted (see | |
3130 | above). */ | |
3131 | ||
3132 | else if (Ustrcmp(argrest, "m") == 0) {} | |
3133 | ||
3134 | /* -oo: An ancient flag for old-style addresses which still seems to | |
3135 | crop up in some calls (see in SCO). */ | |
3136 | ||
3137 | else if (Ustrcmp(argrest, "o") == 0) {} | |
3138 | ||
3139 | /* -oP <name>: set pid file path for daemon */ | |
3140 | ||
3141 | else if (Ustrcmp(argrest, "P") == 0) | |
3142 | override_pid_file_path = argv[++i]; | |
3143 | ||
3144 | /* -or <n>: set timeout for non-SMTP acceptance | |
3145 | -os <n>: set timeout for SMTP acceptance */ | |
3146 | ||
3147 | else if (*argrest == 'r' || *argrest == 's') | |
3148 | { | |
3149 | int *tp = (*argrest == 'r')? | |
3150 | &arg_receive_timeout : &arg_smtp_receive_timeout; | |
3151 | if (argrest[1] == 0) | |
3152 | { | |
3153 | if (i+1 < argc) *tp= readconf_readtime(argv[++i], 0, FALSE); | |
3154 | } | |
3155 | else *tp = readconf_readtime(argrest + 1, 0, FALSE); | |
3156 | if (*tp < 0) | |
3157 | { | |
3158 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); | |
3159 | exit(EXIT_FAILURE); | |
3160 | } | |
3161 | } | |
3162 | ||
3163 | /* -oX <list>: Override local_interfaces and/or default daemon ports */ | |
3164 | ||
3165 | else if (Ustrcmp(argrest, "X") == 0) | |
3166 | override_local_interfaces = argv[++i]; | |
3167 | ||
3168 | /* Unknown -o argument */ | |
3169 | ||
3170 | else badarg = TRUE; | |
3171 | break; | |
3172 | ||
3173 | ||
3174 | /* -ps: force Perl startup; -pd force delayed Perl startup */ | |
3175 | ||
3176 | case 'p': | |
3177 | #ifdef EXIM_PERL | |
3178 | if (*argrest == 's' && argrest[1] == 0) | |
3179 | { | |
3180 | perl_start_option = 1; | |
3181 | break; | |
3182 | } | |
3183 | if (*argrest == 'd' && argrest[1] == 0) | |
3184 | { | |
3185 | perl_start_option = -1; | |
3186 | break; | |
3187 | } | |
3188 | #endif | |
3189 | ||
3190 | /* -panythingelse is taken as the Sendmail-compatible argument -prval:sval, | |
3191 | which sets the host protocol and host name */ | |
3192 | ||
3193 | if (*argrest == 0) | |
5bfe3b35 JH |
3194 | if (i+1 < argc) |
3195 | argrest = argv[++i]; | |
3196 | else | |
059ec3d9 | 3197 | { badarg = TRUE; break; } |
059ec3d9 PH |
3198 | |
3199 | if (*argrest != 0) | |
3200 | { | |
65e061b7 HSHR |
3201 | uschar *hn; |
3202 | ||
3203 | if (received_protocol) | |
3204 | { | |
3205 | fprintf(stderr, "received_protocol is set already\n"); | |
3206 | exit(EXIT_FAILURE); | |
3207 | } | |
3208 | ||
3209 | hn = Ustrchr(argrest, ':'); | |
059ec3d9 | 3210 | if (hn == NULL) |
059ec3d9 | 3211 | received_protocol = argrest; |
059ec3d9 PH |
3212 | else |
3213 | { | |
90341c71 JH |
3214 | int old_pool = store_pool; |
3215 | store_pool = POOL_PERM; | |
059ec3d9 | 3216 | received_protocol = string_copyn(argrest, hn - argrest); |
90341c71 | 3217 | store_pool = old_pool; |
059ec3d9 PH |
3218 | sender_host_name = hn + 1; |
3219 | } | |
3220 | } | |
3221 | break; | |
3222 | ||
3223 | ||
3224 | case 'q': | |
3225 | receiving_message = FALSE; | |
3cc66b45 PH |
3226 | if (queue_interval >= 0) |
3227 | { | |
3228 | fprintf(stderr, "exim: -q specified more than once\n"); | |
3229 | exit(EXIT_FAILURE); | |
3230 | } | |
059ec3d9 PH |
3231 | |
3232 | /* -qq...: Do queue runs in a 2-stage manner */ | |
3233 | ||
3234 | if (*argrest == 'q') | |
3235 | { | |
3236 | queue_2stage = TRUE; | |
3237 | argrest++; | |
3238 | } | |
3239 | ||
3240 | /* -qi...: Do only first (initial) deliveries */ | |
3241 | ||
3242 | if (*argrest == 'i') | |
3243 | { | |
3244 | queue_run_first_delivery = TRUE; | |
3245 | argrest++; | |
3246 | } | |
3247 | ||
3248 | /* -qf...: Run the queue, forcing deliveries | |
3249 | -qff..: Ditto, forcing thawing as well */ | |
3250 | ||
3251 | if (*argrest == 'f') | |
3252 | { | |
3253 | queue_run_force = TRUE; | |
55e70e76 | 3254 | if (*++argrest == 'f') |
059ec3d9 PH |
3255 | { |
3256 | deliver_force_thaw = TRUE; | |
3257 | argrest++; | |
3258 | } | |
3259 | } | |
3260 | ||
3261 | /* -q[f][f]l...: Run the queue only on local deliveries */ | |
3262 | ||
3263 | if (*argrest == 'l') | |
3264 | { | |
3265 | queue_run_local = TRUE; | |
3266 | argrest++; | |
3267 | } | |
3268 | ||
55e70e76 | 3269 | /* -q[f][f][l][G<name>]... Work on the named queue */ |
28b3821f JH |
3270 | |
3271 | if (*argrest == 'G') | |
3272 | { | |
fa665e0b JH |
3273 | int i; |
3274 | for (argrest++, i = 0; argrest[i] && argrest[i] != '/'; ) i++; | |
3275 | queue_name = string_copyn(argrest, i); | |
3276 | argrest += i; | |
3277 | if (*argrest == '/') argrest++; | |
28b3821f JH |
3278 | } |
3279 | ||
3280 | /* -q[f][f][l][G<name>]: Run the queue, optionally forced, optionally local | |
3281 | only, optionally named, optionally starting from a given message id. */ | |
059ec3d9 PH |
3282 | |
3283 | if (*argrest == 0 && | |
3284 | (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1]))) | |
3285 | { | |
3286 | queue_interval = 0; | |
3287 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3288 | start_queue_run_id = argv[++i]; | |
3289 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3290 | stop_queue_run_id = argv[++i]; | |
3291 | } | |
3292 | ||
fa665e0b JH |
3293 | /* -q[f][f][l][G<name>/]<n>: Run the queue at regular intervals, optionally |
3294 | forced, optionally local only, optionally named. */ | |
059ec3d9 | 3295 | |
55e70e76 JH |
3296 | else if ((queue_interval = readconf_readtime(*argrest ? argrest : argv[++i], |
3297 | 0, FALSE)) <= 0) | |
059ec3d9 | 3298 | { |
55e70e76 JH |
3299 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); |
3300 | exit(EXIT_FAILURE); | |
059ec3d9 PH |
3301 | } |
3302 | break; | |
3303 | ||
3304 | ||
3305 | case 'R': /* Synonymous with -qR... */ | |
3306 | receiving_message = FALSE; | |
3307 | ||
3308 | /* -Rf: As -R (below) but force all deliveries, | |
3309 | -Rff: Ditto, but also thaw all frozen messages, | |
3310 | -Rr: String is regex | |
3311 | -Rrf: Regex and force | |
3312 | -Rrff: Regex and force and thaw | |
3313 | ||
3314 | in all cases provided there are no further characters in this | |
3315 | argument. */ | |
3316 | ||
3317 | if (*argrest != 0) | |
3318 | { | |
3319 | int i; | |
55e70e76 | 3320 | for (i = 0; i < nelem(rsopts); i++) |
059ec3d9 PH |
3321 | if (Ustrcmp(argrest, rsopts[i]) == 0) |
3322 | { | |
3323 | if (i != 2) queue_run_force = TRUE; | |
3324 | if (i >= 2) deliver_selectstring_regex = TRUE; | |
3325 | if (i == 1 || i == 4) deliver_force_thaw = TRUE; | |
3326 | argrest += Ustrlen(rsopts[i]); | |
3327 | } | |
059ec3d9 PH |
3328 | } |
3329 | ||
3330 | /* -R: Set string to match in addresses for forced queue run to | |
3331 | pick out particular messages. */ | |
3332 | ||
55e70e76 JH |
3333 | if (*argrest) |
3334 | deliver_selectstring = argrest; | |
3335 | else if (i+1 < argc) | |
3336 | deliver_selectstring = argv[++i]; | |
3337 | else | |
059ec3d9 | 3338 | { |
55e70e76 JH |
3339 | fprintf(stderr, "exim: string expected after -R\n"); |
3340 | exit(EXIT_FAILURE); | |
059ec3d9 | 3341 | } |
059ec3d9 PH |
3342 | break; |
3343 | ||
3344 | ||
3345 | /* -r: an obsolete synonym for -f (see above) */ | |
3346 | ||
3347 | ||
3348 | /* -S: Like -R but works on sender. */ | |
3349 | ||
3350 | case 'S': /* Synonymous with -qS... */ | |
3351 | receiving_message = FALSE; | |
3352 | ||
3353 | /* -Sf: As -S (below) but force all deliveries, | |
3354 | -Sff: Ditto, but also thaw all frozen messages, | |
3355 | -Sr: String is regex | |
3356 | -Srf: Regex and force | |
3357 | -Srff: Regex and force and thaw | |
3358 | ||
3359 | in all cases provided there are no further characters in this | |
3360 | argument. */ | |
3361 | ||
55e70e76 | 3362 | if (*argrest) |
059ec3d9 PH |
3363 | { |
3364 | int i; | |
55e70e76 | 3365 | for (i = 0; i < nelem(rsopts); i++) |
059ec3d9 PH |
3366 | if (Ustrcmp(argrest, rsopts[i]) == 0) |
3367 | { | |
3368 | if (i != 2) queue_run_force = TRUE; | |
3369 | if (i >= 2) deliver_selectstring_sender_regex = TRUE; | |
3370 | if (i == 1 || i == 4) deliver_force_thaw = TRUE; | |
3371 | argrest += Ustrlen(rsopts[i]); | |
3372 | } | |
059ec3d9 PH |
3373 | } |
3374 | ||
3375 | /* -S: Set string to match in addresses for forced queue run to | |
3376 | pick out particular messages. */ | |
3377 | ||
55e70e76 JH |
3378 | if (*argrest) |
3379 | deliver_selectstring_sender = argrest; | |
3380 | else if (i+1 < argc) | |
3381 | deliver_selectstring_sender = argv[++i]; | |
3382 | else | |
059ec3d9 | 3383 | { |
55e70e76 JH |
3384 | fprintf(stderr, "exim: string expected after -S\n"); |
3385 | exit(EXIT_FAILURE); | |
059ec3d9 | 3386 | } |
059ec3d9 PH |
3387 | break; |
3388 | ||
3389 | /* -Tqt is an option that is exclusively for use by the testing suite. | |
3390 | It is not recognized in other circumstances. It allows for the setting up | |
3391 | of explicit "queue times" so that various warning/retry things can be | |
3392 | tested. Otherwise variability of clock ticks etc. cause problems. */ | |
3393 | ||
3394 | case 'T': | |
3395 | if (running_in_test_harness && Ustrcmp(argrest, "qt") == 0) | |
3396 | fudged_queue_times = argv[++i]; | |
3397 | else badarg = TRUE; | |
3398 | break; | |
3399 | ||
3400 | ||
3401 | /* -t: Set flag to extract recipients from body of message. */ | |
3402 | ||
3403 | case 't': | |
3404 | if (*argrest == 0) extract_recipients = TRUE; | |
3405 | ||
3406 | /* -ti: Set flag to extract recipients from body of message, and also | |
3407 | specify that dot does not end the message. */ | |
3408 | ||
3409 | else if (Ustrcmp(argrest, "i") == 0) | |
3410 | { | |
3411 | extract_recipients = TRUE; | |
3412 | dot_ends = FALSE; | |
3413 | } | |
3414 | ||
3415 | /* -tls-on-connect: don't wait for STARTTLS (for old clients) */ | |
3416 | ||
3417 | #ifdef SUPPORT_TLS | |
817d9f57 | 3418 | else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE; |
059ec3d9 PH |
3419 | #endif |
3420 | ||
3421 | else badarg = TRUE; | |
3422 | break; | |
3423 | ||
3424 | ||
3425 | /* -U: This means "initial user submission" in sendmail, apparently. The | |
3426 | doc claims that in future sendmail may refuse syntactically invalid | |
3427 | messages instead of fixing them. For the moment, we just ignore it. */ | |
3428 | ||
3429 | case 'U': | |
3430 | break; | |
3431 | ||
3432 | ||
3433 | /* -v: verify things - this is a very low-level debugging */ | |
3434 | ||
3435 | case 'v': | |
3436 | if (*argrest == 0) | |
3437 | { | |
3438 | debug_selector |= D_v; | |
3439 | debug_file = stderr; | |
3440 | } | |
3441 | else badarg = TRUE; | |
3442 | break; | |
3443 | ||
3444 | ||
3445 | /* -x: AIX uses this to indicate some fancy 8-bit character stuff: | |
3446 | ||
3447 | The -x flag tells the sendmail command that mail from a local | |
3448 | mail program has National Language Support (NLS) extended characters | |
3449 | in the body of the mail item. The sendmail command can send mail with | |
3450 | extended NLS characters across networks that normally corrupts these | |
3451 | 8-bit characters. | |
3452 | ||
3453 | As Exim is 8-bit clean, it just ignores this flag. */ | |
3454 | ||
3455 | case 'x': | |
3456 | if (*argrest != 0) badarg = TRUE; | |
3457 | break; | |
3458 | ||
a3fb9793 PP |
3459 | /* -X: in sendmail: takes one parameter, logfile, and sends debugging |
3460 | logs to that file. We swallow the parameter and otherwise ignore it. */ | |
3461 | ||
3462 | case 'X': | |
3463 | if (*argrest == '\0') | |
a3fb9793 PP |
3464 | if (++i >= argc) |
3465 | { | |
3466 | fprintf(stderr, "exim: string expected after -X\n"); | |
3467 | exit(EXIT_FAILURE); | |
3468 | } | |
0ad2e0fc JH |
3469 | break; |
3470 | ||
3471 | case 'z': | |
3472 | if (*argrest == '\0') | |
3473 | if (++i < argc) log_oneline = argv[i]; else | |
3474 | { | |
3475 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
3476 | exit(EXIT_FAILURE); | |
3477 | } | |
a3fb9793 PP |
3478 | break; |
3479 | ||
059ec3d9 PH |
3480 | /* All other initial characters are errors */ |
3481 | ||
3482 | default: | |
3483 | badarg = TRUE; | |
3484 | break; | |
3485 | } /* End of high-level switch statement */ | |
3486 | ||
3487 | /* Failed to recognize the option, or syntax error */ | |
3488 | ||
3489 | if (badarg) | |
3490 | { | |
3491 | fprintf(stderr, "exim abandoned: unknown, malformed, or incomplete " | |
3492 | "option %s\n", arg); | |
3493 | exit(EXIT_FAILURE); | |
3494 | } | |
3495 | } | |
3496 | ||
3497 | ||
3cc66b45 PH |
3498 | /* If -R or -S have been specified without -q, assume a single queue run. */ |
3499 | ||
55e70e76 JH |
3500 | if ( (deliver_selectstring || deliver_selectstring_sender) |
3501 | && queue_interval < 0) | |
3502 | queue_interval = 0; | |
3cc66b45 PH |
3503 | |
3504 | ||
059ec3d9 | 3505 | END_ARG: |
81ea09ca NM |
3506 | /* If usage_wanted is set we call the usage function - which never returns */ |
3507 | if (usage_wanted) exim_usage(called_as); | |
3508 | ||
3509 | /* Arguments have been processed. Check for incompatibilities. */ | |
059ec3d9 PH |
3510 | if (( |
3511 | (smtp_input || extract_recipients || recipients_arg < argc) && | |
3512 | (daemon_listen || queue_interval >= 0 || bi_option || | |
3513 | test_retry_arg >= 0 || test_rewrite_arg >= 0 || | |
f05da2e8 | 3514 | filter_test != FTEST_NONE || (msg_action_arg > 0 && !one_msg_action)) |
059ec3d9 PH |
3515 | ) || |
3516 | ( | |
3517 | msg_action_arg > 0 && | |
44915474 | 3518 | (daemon_listen || queue_interval > 0 || list_options || |
0ef732d9 PH |
3519 | (checking && msg_action != MSG_LOAD) || |
3520 | bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0) | |
059ec3d9 PH |
3521 | ) || |
3522 | ( | |
55e70e76 | 3523 | (daemon_listen || queue_interval > 0) && |
059ec3d9 | 3524 | (sender_address != NULL || list_options || list_queue || checking || |
0ef732d9 | 3525 | bi_option) |
059ec3d9 PH |
3526 | ) || |
3527 | ( | |
3528 | daemon_listen && queue_interval == 0 | |
3529 | ) || | |
3530 | ( | |
9ee44efb PP |
3531 | inetd_wait_mode && queue_interval >= 0 |
3532 | ) || | |
3533 | ( | |
059ec3d9 PH |
3534 | list_options && |
3535 | (checking || smtp_input || extract_recipients || | |
f05da2e8 | 3536 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3537 | ) || |
3538 | ( | |
3539 | verify_address_mode && | |
3540 | (address_test_mode || smtp_input || extract_recipients || | |
f05da2e8 | 3541 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3542 | ) || |
3543 | ( | |
3544 | address_test_mode && (smtp_input || extract_recipients || | |
f05da2e8 | 3545 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3546 | ) || |
3547 | ( | |
f05da2e8 | 3548 | smtp_input && (sender_address != NULL || filter_test != FTEST_NONE || |
059ec3d9 PH |
3549 | extract_recipients) |
3550 | ) || | |
3551 | ( | |
3552 | deliver_selectstring != NULL && queue_interval < 0 | |
328895cc PH |
3553 | ) || |
3554 | ( | |
3555 | msg_action == MSG_LOAD && | |
3556 | (!expansion_test || expansion_test_message != NULL) | |
059ec3d9 PH |
3557 | ) |
3558 | ) | |
3559 | { | |
3560 | fprintf(stderr, "exim: incompatible command-line options or arguments\n"); | |
3561 | exit(EXIT_FAILURE); | |
3562 | } | |
3563 | ||
3564 | /* If debugging is set up, set the file and the file descriptor to pass on to | |
3565 | child processes. It should, of course, be 2 for stderr. Also, force the daemon | |
3566 | to run in the foreground. */ | |
3567 | ||
3568 | if (debug_selector != 0) | |
3569 | { | |
3570 | debug_file = stderr; | |
3571 | debug_fd = fileno(debug_file); | |
3572 | background_daemon = FALSE; | |
3573 | if (running_in_test_harness) millisleep(100); /* lets caller finish */ | |
3574 | if (debug_selector != D_v) /* -v only doesn't show this */ | |
3575 | { | |
3576 | debug_printf("Exim version %s uid=%ld gid=%ld pid=%d D=%x\n", | |
3577 | version_string, (long int)real_uid, (long int)real_gid, (int)getpid(), | |
3578 | debug_selector); | |
6545de78 PP |
3579 | if (!version_printed) |
3580 | show_whats_supported(stderr); | |
059ec3d9 PH |
3581 | } |
3582 | } | |
3583 | ||
3584 | /* When started with root privilege, ensure that the limits on the number of | |
3585 | open files and the number of processes (where that is accessible) are | |
3586 | sufficiently large, or are unset, in case Exim has been called from an | |
3587 | environment where the limits are screwed down. Not all OS have the ability to | |
3588 | change some of these limits. */ | |
3589 | ||
3590 | if (unprivileged) | |
3591 | { | |
3592 | DEBUG(D_any) debug_print_ids(US"Exim has no root privilege:"); | |
3593 | } | |
3594 | else | |
3595 | { | |
3596 | struct rlimit rlp; | |
3597 | ||
3598 | #ifdef RLIMIT_NOFILE | |
3599 | if (getrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3600 | { | |
3601 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NOFILE) failed: %s", | |
3602 | strerror(errno)); | |
3603 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3604 | } | |
eb2c0248 PH |
3605 | |
3606 | /* I originally chose 1000 as a nice big number that was unlikely to | |
a494b1e1 PH |
3607 | be exceeded. It turns out that some older OS have a fixed upper limit of |
3608 | 256. */ | |
eb2c0248 | 3609 | |
059ec3d9 PH |
3610 | if (rlp.rlim_cur < 1000) |
3611 | { | |
3612 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3613 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
eb2c0248 | 3614 | { |
a494b1e1 PH |
3615 | rlp.rlim_cur = rlp.rlim_max = 256; |
3616 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3617 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NOFILE) failed: %s", | |
3618 | strerror(errno)); | |
eb2c0248 | 3619 | } |
059ec3d9 PH |
3620 | } |
3621 | #endif | |
3622 | ||
3623 | #ifdef RLIMIT_NPROC | |
3624 | if (getrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3625 | { | |
3626 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NPROC) failed: %s", | |
3627 | strerror(errno)); | |
3628 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3629 | } | |
3630 | ||
3631 | #ifdef RLIM_INFINITY | |
3632 | if (rlp.rlim_cur != RLIM_INFINITY && rlp.rlim_cur < 1000) | |
3633 | { | |
3634 | rlp.rlim_cur = rlp.rlim_max = RLIM_INFINITY; | |
3635 | #else | |
3636 | if (rlp.rlim_cur < 1000) | |
3637 | { | |
3638 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3639 | #endif | |
3640 | if (setrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3641 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NPROC) failed: %s", | |
3642 | strerror(errno)); | |
3643 | } | |
3644 | #endif | |
3645 | } | |
3646 | ||
3647 | /* Exim is normally entered as root (but some special configurations are | |
3648 | possible that don't do this). However, it always spins off sub-processes that | |
3649 | set their uid and gid as required for local delivery. We don't want to pass on | |
3650 | any extra groups that root may belong to, so we want to get rid of them all at | |
3651 | this point. | |
3652 | ||
3653 | We need to obey setgroups() at this stage, before possibly giving up root | |
3654 | privilege for a changed configuration file, but later on we might need to | |
3655 | check on the additional groups for the admin user privilege - can't do that | |
3656 | till after reading the config, which might specify the exim gid. Therefore, | |
3657 | save the group list here first. */ | |
3658 | ||
3659 | group_count = getgroups(NGROUPS_MAX, group_list); | |
cd59ab18 PP |
3660 | if (group_count < 0) |
3661 | { | |
3662 | fprintf(stderr, "exim: getgroups() failed: %s\n", strerror(errno)); | |
3663 | exit(EXIT_FAILURE); | |
3664 | } | |
059ec3d9 PH |
3665 | |
3666 | /* There is a fundamental difference in some BSD systems in the matter of | |
3667 | groups. FreeBSD and BSDI are known to be different; NetBSD and OpenBSD are | |
3668 | known not to be different. On the "different" systems there is a single group | |
3669 | list, and the first entry in it is the current group. On all other versions of | |
3670 | Unix there is a supplementary group list, which is in *addition* to the current | |
3671 | group. Consequently, to get rid of all extraneous groups on a "standard" system | |
3672 | you pass over 0 groups to setgroups(), while on a "different" system you pass | |
3673 | over a single group - the current group, which is always the first group in the | |
3674 | list. Calling setgroups() with zero groups on a "different" system results in | |
3675 | an error return. The following code should cope with both types of system. | |
3676 | ||
3677 | However, if this process isn't running as root, setgroups() can't be used | |
3678 | since you have to be root to run it, even if throwing away groups. Not being | |
3679 | root here happens only in some unusual configurations. We just ignore the | |
3680 | error. */ | |
3681 | ||
3682 | if (setgroups(0, NULL) != 0) | |
3683 | { | |
3684 | if (setgroups(1, group_list) != 0 && !unprivileged) | |
3685 | { | |
3686 | fprintf(stderr, "exim: setgroups() failed: %s\n", strerror(errno)); | |
3687 | exit(EXIT_FAILURE); | |
3688 | } | |
3689 | } | |
3690 | ||
3691 | /* If the configuration file name has been altered by an argument on the | |
3692 | command line (either a new file name or a macro definition) and the caller is | |
cd25e41d DW |
3693 | not root, or if this is a filter testing run, remove any setuid privilege the |
3694 | program has and run as the underlying user. | |
059ec3d9 | 3695 | |
cd25e41d DW |
3696 | The exim user is locked out of this, which severely restricts the use of -C |
3697 | for some purposes. | |
059ec3d9 PH |
3698 | |
3699 | Otherwise, set the real ids to the effective values (should be root unless run | |
3700 | from inetd, which it can either be root or the exim uid, if one is configured). | |
3701 | ||
3702 | There is a private mechanism for bypassing some of this, in order to make it | |
3703 | possible to test lots of configurations automatically, without having either to | |
3704 | recompile each time, or to patch in an actual configuration file name and other | |
3705 | values (such as the path name). If running in the test harness, pretend that | |
3706 | configuration file changes and macro definitions haven't happened. */ | |
3707 | ||
3708 | if (( /* EITHER */ | |
a7cbbf50 | 3709 | (!trusted_config || /* Config changed, or */ |
a4034eb8 | 3710 | !macros_trusted(opt_D_used)) && /* impermissible macros and */ |
059ec3d9 | 3711 | real_uid != root_uid && /* Not root, and */ |
059ec3d9 PH |
3712 | !running_in_test_harness /* Not fudged */ |
3713 | ) || /* OR */ | |
3714 | expansion_test /* expansion testing */ | |
3715 | || /* OR */ | |
f05da2e8 | 3716 | filter_test != FTEST_NONE) /* Filter testing */ |
059ec3d9 PH |
3717 | { |
3718 | setgroups(group_count, group_list); | |
3719 | exim_setugid(real_uid, real_gid, FALSE, | |
3720 | US"-C, -D, -be or -bf forces real uid"); | |
3721 | removed_privilege = TRUE; | |
3722 | ||
3723 | /* In the normal case when Exim is called like this, stderr is available | |
3724 | and should be used for any logging information because attempts to write | |
3725 | to the log will usually fail. To arrange this, we unset really_exim. However, | |
3726 | if no stderr is available there is no point - we might as well have a go | |
b7487bce | 3727 | at the log (if it fails, syslog will be written). |
059ec3d9 | 3728 | |
b7487bce PP |
3729 | Note that if the invoker is Exim, the logs remain available. Messing with |
3730 | this causes unlogged successful deliveries. */ | |
3731 | ||
3732 | if ((log_stderr != NULL) && (real_uid != exim_uid)) | |
3733 | really_exim = FALSE; | |
059ec3d9 PH |
3734 | } |
3735 | ||
3736 | /* Privilege is to be retained for the moment. It may be dropped later, | |
3737 | depending on the job that this Exim process has been asked to do. For now, set | |
3738 | the real uid to the effective so that subsequent re-execs of Exim are done by a | |
3739 | privileged user. */ | |
3740 | ||
3741 | else exim_setugid(geteuid(), getegid(), FALSE, US"forcing real = effective"); | |
3742 | ||
f05da2e8 | 3743 | /* If testing a filter, open the file(s) now, before wasting time doing other |
059ec3d9 PH |
3744 | setups and reading the message. */ |
3745 | ||
f05da2e8 PH |
3746 | if ((filter_test & FTEST_SYSTEM) != 0) |
3747 | { | |
3748 | filter_sfd = Uopen(filter_test_sfile, O_RDONLY, 0); | |
3749 | if (filter_sfd < 0) | |
3750 | { | |
3751 | fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_sfile, | |
3752 | strerror(errno)); | |
3753 | return EXIT_FAILURE; | |
3754 | } | |
3755 | } | |
3756 | ||
3757 | if ((filter_test & FTEST_USER) != 0) | |
059ec3d9 | 3758 | { |
f05da2e8 PH |
3759 | filter_ufd = Uopen(filter_test_ufile, O_RDONLY, 0); |
3760 | if (filter_ufd < 0) | |
059ec3d9 | 3761 | { |
f05da2e8 | 3762 | fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_ufile, |
059ec3d9 PH |
3763 | strerror(errno)); |
3764 | return EXIT_FAILURE; | |
3765 | } | |
3766 | } | |
3767 | ||
8829633f PP |
3768 | /* Initialise lookup_list |
3769 | If debugging, already called above via version reporting. | |
3770 | In either case, we initialise the list of available lookups while running | |
3771 | as root. All dynamically modules are loaded from a directory which is | |
3772 | hard-coded into the binary and is code which, if not a module, would be | |
3773 | part of Exim already. Ability to modify the content of the directory | |
3774 | is equivalent to the ability to modify a setuid binary! | |
3775 | ||
3776 | This needs to happen before we read the main configuration. */ | |
3777 | init_lookup_list(); | |
3778 | ||
8c5d388a | 3779 | #ifdef SUPPORT_I18N |
9d4319df JH |
3780 | if (running_in_test_harness) smtputf8_advertise_hosts = NULL; |
3781 | #endif | |
3782 | ||
059ec3d9 PH |
3783 | /* Read the main runtime configuration data; this gives up if there |
3784 | is a failure. It leaves the configuration file open so that the subsequent | |
3de973a2 | 3785 | configuration data for delivery can be read if needed. |
059ec3d9 | 3786 | |
3de973a2 HSHR |
3787 | NOTE: immediatly after opening the configuration file we change the working |
3788 | directory to "/"! Later we change to $spool_directory. We do it there, because | |
3789 | during readconf_main() some expansion takes place already. */ | |
bc3c7bb7 | 3790 | |
cd328be9 JH |
3791 | /* Store the initial cwd before we change directories. Can be NULL if the |
3792 | dir has already been unlinked. */ | |
3793 | initial_cwd = os_getcwd(NULL, 0); | |
3615fa9a | 3794 | |
34e86e20 HSHR |
3795 | /* checking: |
3796 | -be[m] expansion test - | |
3797 | -b[fF] filter test new | |
3798 | -bh[c] host test - | |
3799 | -bmalware malware_test_file new | |
3800 | -brt retry test new | |
3801 | -brw rewrite test new | |
3802 | -bt address test - | |
3803 | -bv[s] address verify - | |
3804 | list_options: | |
3805 | -bP <option> (except -bP config, which sets list_config) | |
3806 | ||
3807 | If any of these options is set, we suppress warnings about configuration | |
3808 | issues (currently about tls_advertise_hosts and keep_environment not being | |
3809 | defined) */ | |
3810 | ||
3811 | readconf_main(checking || list_options); | |
059ec3d9 | 3812 | |
32b8ce41 | 3813 | |
3de973a2 HSHR |
3814 | /* Now in directory "/" */ |
3815 | ||
bc3c7bb7 HSHR |
3816 | if (cleanup_environment() == FALSE) |
3817 | log_write(0, LOG_PANIC_DIE, "Can't cleanup environment"); | |
3818 | ||
3819 | ||
a3fb9793 PP |
3820 | /* If an action on specific messages is requested, or if a daemon or queue |
3821 | runner is being started, we need to know if Exim was called by an admin user. | |
3822 | This is the case if the real user is root or exim, or if the real group is | |
3823 | exim, or if one of the supplementary groups is exim or a group listed in | |
3824 | admin_groups. We don't fail all message actions immediately if not admin_user, | |
3825 | since some actions can be performed by non-admin users. Instead, set admin_user | |
3826 | for later interrogation. */ | |
3827 | ||
3828 | if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid) | |
3829 | admin_user = TRUE; | |
3830 | else | |
3831 | { | |
3832 | int i, j; | |
32b8ce41 JH |
3833 | for (i = 0; i < group_count && !admin_user; i++) |
3834 | if (group_list[i] == exim_gid) | |
3835 | admin_user = TRUE; | |
3836 | else if (admin_groups) | |
3837 | for (j = 1; j <= (int)admin_groups[0] && !admin_user; j++) | |
a3fb9793 | 3838 | if (admin_groups[j] == group_list[i]) |
32b8ce41 | 3839 | admin_user = TRUE; |
a3fb9793 PP |
3840 | } |
3841 | ||
3842 | /* Another group of privileged users are the trusted users. These are root, | |
3843 | exim, and any caller matching trusted_users or trusted_groups. Trusted callers | |
3844 | are permitted to specify sender_addresses with -f on the command line, and | |
3845 | other message parameters as well. */ | |
3846 | ||
3847 | if (real_uid == root_uid || real_uid == exim_uid) | |
3848 | trusted_caller = TRUE; | |
3849 | else | |
3850 | { | |
3851 | int i, j; | |
3852 | ||
32b8ce41 JH |
3853 | if (trusted_users) |
3854 | for (i = 1; i <= (int)trusted_users[0] && !trusted_caller; i++) | |
a3fb9793 | 3855 | if (trusted_users[i] == real_uid) |
32b8ce41 | 3856 | trusted_caller = TRUE; |
a3fb9793 | 3857 | |
32b8ce41 JH |
3858 | if (trusted_groups) |
3859 | for (i = 1; i <= (int)trusted_groups[0] && !trusted_caller; i++) | |
a3fb9793 PP |
3860 | if (trusted_groups[i] == real_gid) |
3861 | trusted_caller = TRUE; | |
32b8ce41 | 3862 | else for (j = 0; j < group_count && !trusted_caller; j++) |
a3fb9793 | 3863 | if (trusted_groups[i] == group_list[j]) |
32b8ce41 | 3864 | trusted_caller = TRUE; |
a3fb9793 PP |
3865 | } |
3866 | ||
f33875c3 | 3867 | /* At this point, we know if the user is privileged and some command-line |
b4a1e238 | 3868 | options become possibly impermissible, depending upon the configuration file. */ |
f33875c3 PP |
3869 | |
3870 | if (checking && commandline_checks_require_admin && !admin_user) { | |
3871 | fprintf(stderr, "exim: those command-line flags are set to require admin\n"); | |
3872 | exit(EXIT_FAILURE); | |
3873 | } | |
3874 | ||
059ec3d9 PH |
3875 | /* Handle the decoding of logging options. */ |
3876 | ||
6c6d6e48 | 3877 | decode_bits(log_selector, log_selector_size, log_notall, |
ed7f7860 | 3878 | log_selector_string, log_options, log_options_count, US"log", 0); |
059ec3d9 PH |
3879 | |
3880 | DEBUG(D_any) | |
3881 | { | |
6c6d6e48 | 3882 | int i; |
059ec3d9 | 3883 | debug_printf("configuration file is %s\n", config_main_filename); |
6c6d6e48 TF |
3884 | debug_printf("log selectors ="); |
3885 | for (i = 0; i < log_selector_size; i++) | |
3886 | debug_printf(" %08x", log_selector[i]); | |
3887 | debug_printf("\n"); | |
059ec3d9 PH |
3888 | } |
3889 | ||
3890 | /* If domain literals are not allowed, check the sender address that was | |
3891 | supplied with -f. Ditto for a stripped trailing dot. */ | |
3892 | ||
3893 | if (sender_address != NULL) | |
3894 | { | |
3895 | if (sender_address[sender_address_domain] == '[' && !allow_domain_literals) | |
3896 | { | |
3897 | fprintf(stderr, "exim: bad -f address \"%s\": domain literals not " | |
3898 | "allowed\n", sender_address); | |
3899 | return EXIT_FAILURE; | |
3900 | } | |
3901 | if (f_end_dot && !strip_trailing_dot) | |
3902 | { | |
3903 | fprintf(stderr, "exim: bad -f address \"%s.\": domain is malformed " | |
3904 | "(trailing dot not allowed)\n", sender_address); | |
3905 | return EXIT_FAILURE; | |
3906 | } | |
3907 | } | |
3908 | ||
a3fb9793 PP |
3909 | /* See if an admin user overrode our logging. */ |
3910 | ||
3911 | if (cmdline_syslog_name != NULL) | |
3912 | { | |
3913 | if (admin_user) | |
3914 | { | |
3915 | syslog_processname = cmdline_syslog_name; | |
3916 | log_file_path = string_copy(CUS"syslog"); | |
3917 | } | |
3918 | else | |
3919 | { | |
3920 | /* not a panic, non-privileged users should not be able to spam paniclog */ | |
3921 | fprintf(stderr, | |
3922 | "exim: you lack sufficient privilege to specify syslog process name\n"); | |
3923 | return EXIT_FAILURE; | |
3924 | } | |
3925 | } | |
3926 | ||
059ec3d9 PH |
3927 | /* Paranoia check of maximum lengths of certain strings. There is a check |
3928 | on the length of the log file path in log.c, which will come into effect | |
3929 | if there are any calls to write the log earlier than this. However, if we | |
3930 | get this far but the string is very long, it is better to stop now than to | |
3931 | carry on and (e.g.) receive a message and then have to collapse. The call to | |
3932 | log_write() from here will cause the ultimate panic collapse if the complete | |
3933 | file name exceeds the buffer length. */ | |
3934 | ||
3935 | if (Ustrlen(log_file_path) > 200) | |
3936 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3937 | "log_file_path is longer than 200 chars: aborting"); | |
3938 | ||
3939 | if (Ustrlen(pid_file_path) > 200) | |
3940 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3941 | "pid_file_path is longer than 200 chars: aborting"); | |
3942 | ||
3943 | if (Ustrlen(spool_directory) > 200) | |
3944 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3945 | "spool_directory is longer than 200 chars: aborting"); | |
3946 | ||
3947 | /* Length check on the process name given to syslog for its TAG field, | |
3948 | which is only permitted to be 32 characters or less. See RFC 3164. */ | |
3949 | ||
3950 | if (Ustrlen(syslog_processname) > 32) | |
3951 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3952 | "syslog_processname is longer than 32 chars: aborting"); | |
3953 | ||
0ad2e0fc | 3954 | if (log_oneline) |
0ad2e0fc JH |
3955 | if (admin_user) |
3956 | { | |
3957 | log_write(0, LOG_MAIN, "%s", log_oneline); | |
3958 | return EXIT_SUCCESS; | |
3959 | } | |
3960 | else | |
3961 | return EXIT_FAILURE; | |
0ad2e0fc | 3962 | |
059ec3d9 PH |
3963 | /* In some operating systems, the environment variable TMPDIR controls where |
3964 | temporary files are created; Exim doesn't use these (apart from when delivering | |
3965 | to MBX mailboxes), but called libraries such as DBM libraries may require them. | |
3966 | If TMPDIR is found in the environment, reset it to the value defined in the | |
8f3bfb82 HSHR |
3967 | EXIM_TMPDIR macro, if this macro is defined. For backward compatibility this |
3968 | macro may be called TMPDIR in old "Local/Makefile"s. It's converted to | |
3969 | EXIM_TMPDIR by the build scripts. | |
3970 | */ | |
059ec3d9 | 3971 | |
75286da3 | 3972 | #ifdef EXIM_TMPDIR |
059ec3d9 PH |
3973 | { |
3974 | uschar **p; | |
40c90bca JH |
3975 | if (environ) for (p = USS environ; *p; p++) |
3976 | if (Ustrncmp(*p, "TMPDIR=", 7) == 0 && Ustrcmp(*p+7, EXIM_TMPDIR) != 0) | |
059ec3d9 | 3977 | { |
40c90bca | 3978 | uschar * newp = store_malloc(Ustrlen(EXIM_TMPDIR) + 8); |
75286da3 | 3979 | sprintf(CS newp, "TMPDIR=%s", EXIM_TMPDIR); |
059ec3d9 | 3980 | *p = newp; |
75286da3 | 3981 | DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", EXIM_TMPDIR); |
059ec3d9 | 3982 | } |
059ec3d9 PH |
3983 | } |
3984 | #endif | |
3985 | ||
3986 | /* Timezone handling. If timezone_string is "utc", set a flag to cause all | |
3987 | timestamps to be in UTC (gmtime() is used instead of localtime()). Otherwise, | |
3988 | we may need to get rid of a bogus timezone setting. This can arise when Exim is | |
3989 | called by a user who has set the TZ variable. This then affects the timestamps | |
3990 | in log files and in Received: headers, and any created Date: header lines. The | |
3991 | required timezone is settable in the configuration file, so nothing can be done | |
3992 | about this earlier - but hopefully nothing will normally be logged earlier than | |
3993 | this. We have to make a new environment if TZ is wrong, but don't bother if | |
3994 | timestamps_utc is set, because then all times are in UTC anyway. */ | |
3995 | ||
40c90bca | 3996 | if (timezone_string && strcmpic(timezone_string, US"UTC") == 0) |
059ec3d9 | 3997 | timestamps_utc = TRUE; |
059ec3d9 PH |
3998 | else |
3999 | { | |
4000 | uschar *envtz = US getenv("TZ"); | |
4dc2379a JH |
4001 | if (envtz |
4002 | ? !timezone_string || Ustrcmp(timezone_string, envtz) != 0 | |
4003 | : timezone_string != NULL | |
4004 | ) | |
059ec3d9 PH |
4005 | { |
4006 | uschar **p = USS environ; | |
4007 | uschar **new; | |
4008 | uschar **newp; | |
4009 | int count = 0; | |
40c90bca JH |
4010 | if (environ) while (*p++) count++; |
4011 | if (!envtz) count++; | |
4012 | newp = new = store_malloc(sizeof(uschar *) * (count + 1)); | |
4013 | if (environ) for (p = USS environ; *p; p++) | |
4014 | if (Ustrncmp(*p, "TZ=", 3) != 0) *newp++ = *p; | |
4015 | if (timezone_string) | |
4016 | { | |
4017 | *newp = store_malloc(Ustrlen(timezone_string) + 4); | |
059ec3d9 PH |
4018 | sprintf(CS *newp++, "TZ=%s", timezone_string); |
4019 | } | |
4020 | *newp = NULL; | |
4021 | environ = CSS new; | |
4022 | tzset(); | |
4023 | DEBUG(D_any) debug_printf("Reset TZ to %s: time is %s\n", timezone_string, | |
4024 | tod_stamp(tod_log)); | |
4025 | } | |
4026 | } | |
4027 | ||
4028 | /* Handle the case when we have removed the setuid privilege because of -C or | |
cd25e41d | 4029 | -D. This means that the caller of Exim was not root. |
059ec3d9 | 4030 | |
cd25e41d DW |
4031 | There is a problem if we were running as the Exim user. The sysadmin may |
4032 | expect this case to retain privilege because "the binary was called by the | |
4033 | Exim user", but it hasn't, because either the -D option set macros, or the | |
261dc43e | 4034 | -C option set a non-trusted configuration file. There are two possibilities: |
059ec3d9 PH |
4035 | |
4036 | (1) If deliver_drop_privilege is set, Exim is not going to re-exec in order | |
4037 | to do message deliveries. Thus, the fact that it is running as a | |
4038 | non-privileged user is plausible, and might be wanted in some special | |
4039 | configurations. However, really_exim will have been set false when | |
4040 | privilege was dropped, to stop Exim trying to write to its normal log | |
4041 | files. Therefore, re-enable normal log processing, assuming the sysadmin | |
4042 | has set up the log directory correctly. | |
4043 | ||
4044 | (2) If deliver_drop_privilege is not set, the configuration won't work as | |
4045 | apparently intended, and so we log a panic message. In order to retain | |
261dc43e DW |
4046 | root for -C or -D, the caller must either be root or be invoking a |
4047 | trusted configuration file (when deliver_drop_privilege is false). */ | |
059ec3d9 | 4048 | |
4ab69ec7 JH |
4049 | if ( removed_privilege |
4050 | && (!trusted_config || opt_D_used) | |
4051 | && real_uid == exim_uid) | |
059ec3d9 PH |
4052 | if (deliver_drop_privilege) |
4053 | really_exim = TRUE; /* let logging work normally */ | |
4054 | else | |
4055 | log_write(0, LOG_MAIN|LOG_PANIC, | |
cd25e41d | 4056 | "exim user lost privilege for using %s option", |
90b6341f | 4057 | trusted_config? "-D" : "-C"); |
059ec3d9 PH |
4058 | |
4059 | /* Start up Perl interpreter if Perl support is configured and there is a | |
4060 | perl_startup option, and the configuration or the command line specifies | |
4061 | initializing starting. Note that the global variables are actually called | |
4062 | opt_perl_xxx to avoid clashing with perl's namespace (perl_*). */ | |
4063 | ||
4064 | #ifdef EXIM_PERL | |
4065 | if (perl_start_option != 0) | |
4066 | opt_perl_at_start = (perl_start_option > 0); | |
4067 | if (opt_perl_at_start && opt_perl_startup != NULL) | |
4068 | { | |
4069 | uschar *errstr; | |
4070 | DEBUG(D_any) debug_printf("Starting Perl interpreter\n"); | |
4071 | errstr = init_perl(opt_perl_startup); | |
4072 | if (errstr != NULL) | |
4073 | { | |
4074 | fprintf(stderr, "exim: error in perl_startup code: %s\n", errstr); | |
4075 | return EXIT_FAILURE; | |
4076 | } | |
4077 | opt_perl_started = TRUE; | |
4078 | } | |
4079 | #endif /* EXIM_PERL */ | |
4080 | ||
4081 | /* Log the arguments of the call if the configuration file said so. This is | |
4082 | a debugging feature for finding out what arguments certain MUAs actually use. | |
4083 | Don't attempt it if logging is disabled, or if listing variables or if | |
4084 | verifying/testing addresses or expansions. */ | |
4085 | ||
675ae646 | 4086 | if ( (debug_selector & D_any || LOGGING(arguments)) |
e6057245 | 4087 | && really_exim && !list_options && !checking) |
059ec3d9 PH |
4088 | { |
4089 | int i; | |
4090 | uschar *p = big_buffer; | |
1ac6b2e7 | 4091 | Ustrcpy(p, "cwd= (failed)"); |
3615fa9a | 4092 | |
675ae646 JH |
4093 | if (!initial_cwd) |
4094 | p += 13; | |
4095 | else | |
4096 | { | |
4097 | Ustrncpy(p + 4, initial_cwd, big_buffer_size-5); | |
4098 | p += 4 + Ustrlen(initial_cwd); | |
4099 | /* in case p is near the end and we don't provide enough space for | |
4100 | * string_format to be willing to write. */ | |
4101 | *p = '\0'; | |
4102 | } | |
3615fa9a | 4103 | |
059ec3d9 PH |
4104 | (void)string_format(p, big_buffer_size - (p - big_buffer), " %d args:", argc); |
4105 | while (*p) p++; | |
4106 | for (i = 0; i < argc; i++) | |
4107 | { | |
4108 | int len = Ustrlen(argv[i]); | |
55414b25 | 4109 | const uschar *printing; |
059ec3d9 PH |
4110 | uschar *quote; |
4111 | if (p + len + 8 >= big_buffer + big_buffer_size) | |
4112 | { | |
4113 | Ustrcpy(p, " ..."); | |
4114 | log_write(0, LOG_MAIN, "%s", big_buffer); | |
4115 | Ustrcpy(big_buffer, "..."); | |
4116 | p = big_buffer + 3; | |
4117 | } | |
4118 | printing = string_printing(argv[i]); | |
4119 | if (printing[0] == 0) quote = US"\""; else | |
4120 | { | |
55414b25 | 4121 | const uschar *pp = printing; |
059ec3d9 PH |
4122 | quote = US""; |
4123 | while (*pp != 0) if (isspace(*pp++)) { quote = US"\""; break; } | |
4124 | } | |
5976eb99 | 4125 | p += sprintf(CS p, " %s%.*s%s", quote, (int)(big_buffer_size - |
059ec3d9 | 4126 | (p - big_buffer) - 4), printing, quote); |
059ec3d9 | 4127 | } |
31619da6 | 4128 | |
6c6d6e48 | 4129 | if (LOGGING(arguments)) |
31619da6 PH |
4130 | log_write(0, LOG_MAIN, "%s", big_buffer); |
4131 | else | |
4132 | debug_printf("%s\n", big_buffer); | |
059ec3d9 PH |
4133 | } |
4134 | ||
4135 | /* Set the working directory to be the top-level spool directory. We don't rely | |
4136 | on this in the code, which always uses fully qualified names, but it's useful | |
4137 | for core dumps etc. Don't complain if it fails - the spool directory might not | |
4138 | be generally accessible and calls with the -C option (and others) have lost | |
ba18e66a PH |
4139 | privilege by now. Before the chdir, we try to ensure that the directory exists. |
4140 | */ | |
059ec3d9 PH |
4141 | |
4142 | if (Uchdir(spool_directory) != 0) | |
4143 | { | |
1ac6b2e7 | 4144 | int dummy; |
ba18e66a | 4145 | (void)directory_make(spool_directory, US"", SPOOL_DIRECTORY_MODE, FALSE); |
1ac6b2e7 | 4146 | dummy = /* quieten compiler */ Uchdir(spool_directory); |
cab0c277 | 4147 | dummy = dummy; /* yet more compiler quietening, sigh */ |
059ec3d9 PH |
4148 | } |
4149 | ||
4150 | /* Handle calls with the -bi option. This is a sendmail option to rebuild *the* | |
4151 | alias file. Exim doesn't have such a concept, but this call is screwed into | |
4152 | Sun's YP makefiles. Handle this by calling a configured script, as the real | |
4153 | user who called Exim. The -oA option can be used to pass an argument to the | |
4154 | script. */ | |
4155 | ||
4156 | if (bi_option) | |
4157 | { | |
1fe64dcc | 4158 | (void)fclose(config_file); |
059ec3d9 PH |
4159 | if (bi_command != NULL) |
4160 | { | |
4161 | int i = 0; | |
4162 | uschar *argv[3]; | |
4163 | argv[i++] = bi_command; | |
4164 | if (alias_arg != NULL) argv[i++] = alias_arg; | |
4165 | argv[i++] = NULL; | |
4166 | ||
4167 | setgroups(group_count, group_list); | |
4168 | exim_setugid(real_uid, real_gid, FALSE, US"running bi_command"); | |
4169 | ||
4170 | DEBUG(D_exec) debug_printf("exec %.256s %.256s\n", argv[0], | |
4171 | (argv[1] == NULL)? US"" : argv[1]); | |
4172 | ||
4173 | execv(CS argv[0], (char *const *)argv); | |
4174 | fprintf(stderr, "exim: exec failed: %s\n", strerror(errno)); | |
4175 | exit(EXIT_FAILURE); | |
4176 | } | |
4177 | else | |
4178 | { | |
4179 | DEBUG(D_any) debug_printf("-bi used but bi_command not set; exiting\n"); | |
4180 | exit(EXIT_SUCCESS); | |
4181 | } | |
4182 | } | |
4183 | ||
a3fb9793 PP |
4184 | /* We moved the admin/trusted check to be immediately after reading the |
4185 | configuration file. We leave these prints here to ensure that syslog setup, | |
4186 | logfile setup, and so on has already happened. */ | |
059ec3d9 PH |
4187 | |
4188 | if (trusted_caller) DEBUG(D_any) debug_printf("trusted user\n"); | |
4189 | if (admin_user) DEBUG(D_any) debug_printf("admin user\n"); | |
4190 | ||
4191 | /* Only an admin user may start the daemon or force a queue run in the default | |
4192 | configuration, but the queue run restriction can be relaxed. Only an admin | |
4193 | user may request that a message be returned to its sender forthwith. Only an | |
4194 | admin user may specify a debug level greater than D_v (because it might show | |
4195 | passwords, etc. in lookup queries). Only an admin user may request a queue | |
8544e77a PP |
4196 | count. Only an admin user can use the test interface to scan for email |
4197 | (because Exim will be in the spool dir and able to look at mails). */ | |
059ec3d9 PH |
4198 | |
4199 | if (!admin_user) | |
4200 | { | |
4201 | BOOL debugset = (debug_selector & ~D_v) != 0; | |
8544e77a | 4202 | if (deliver_give_up || daemon_listen || malware_test_file || |
059ec3d9 PH |
4203 | (count_queue && queue_list_requires_admin) || |
4204 | (list_queue && queue_list_requires_admin) || | |
4205 | (queue_interval >= 0 && prod_requires_admin) || | |
4206 | (debugset && !running_in_test_harness)) | |
4207 | { | |
4208 | fprintf(stderr, "exim:%s permission denied\n", debugset? " debugging" : ""); | |
4209 | exit(EXIT_FAILURE); | |
4210 | } | |
4211 | } | |
4212 | ||
4213 | /* If the real user is not root or the exim uid, the argument for passing | |
4214 | in an open TCP/IP connection for another message is not permitted, nor is | |
4215 | running with the -N option for any delivery action, unless this call to exim is | |
4216 | one that supplied an input message, or we are using a patched exim for | |
4217 | regression testing. */ | |
4218 | ||
4219 | if (real_uid != root_uid && real_uid != exim_uid && | |
4220 | (continue_hostname != NULL || | |
4221 | (dont_deliver && | |
4222 | (queue_interval >= 0 || daemon_listen || msg_action_arg > 0) | |
4223 | )) && !running_in_test_harness) | |
4224 | { | |
4225 | fprintf(stderr, "exim: Permission denied\n"); | |
4226 | return EXIT_FAILURE; | |
4227 | } | |
4228 | ||
4229 | /* If the caller is not trusted, certain arguments are ignored when running for | |
f05da2e8 PH |
4230 | real, but are permitted when checking things (-be, -bv, -bt, -bh, -bf, -bF). |
4231 | Note that authority for performing certain actions on messages is tested in the | |
059ec3d9 PH |
4232 | queue_action() function. */ |
4233 | ||
34e86e20 | 4234 | if (!trusted_caller && !checking) |
059ec3d9 PH |
4235 | { |
4236 | sender_host_name = sender_host_address = interface_address = | |
4237 | sender_ident = received_protocol = NULL; | |
4238 | sender_host_port = interface_port = 0; | |
4239 | sender_host_authenticated = authenticated_sender = authenticated_id = NULL; | |
4240 | } | |
4241 | ||
4242 | /* If a sender host address is set, extract the optional port number off the | |
4243 | end of it and check its syntax. Do the same thing for the interface address. | |
4244 | Exim exits if the syntax is bad. */ | |
4245 | ||
4246 | else | |
4247 | { | |
4248 | if (sender_host_address != NULL) | |
4249 | sender_host_port = check_port(sender_host_address); | |
4250 | if (interface_address != NULL) | |
4251 | interface_port = check_port(interface_address); | |
4252 | } | |
4253 | ||
f4ee74ac PP |
4254 | /* If the caller is trusted, then they can use -G to suppress_local_fixups. */ |
4255 | if (flag_G) | |
4256 | { | |
4257 | if (trusted_caller) | |
4258 | { | |
4259 | suppress_local_fixups = suppress_local_fixups_default = TRUE; | |
4260 | DEBUG(D_acl) debug_printf("suppress_local_fixups forced on by -G\n"); | |
4261 | } | |
4262 | else | |
4263 | { | |
4264 | fprintf(stderr, "exim: permission denied (-G requires a trusted user)\n"); | |
4265 | return EXIT_FAILURE; | |
4266 | } | |
4267 | } | |
4268 | ||
059ec3d9 PH |
4269 | /* If an SMTP message is being received check to see if the standard input is a |
4270 | TCP/IP socket. If it is, we assume that Exim was called from inetd if the | |
4271 | caller is root or the Exim user, or if the port is a privileged one. Otherwise, | |
4272 | barf. */ | |
4273 | ||
4274 | if (smtp_input) | |
4275 | { | |
4276 | union sockaddr_46 inetd_sock; | |
36a3b041 | 4277 | EXIM_SOCKLEN_T size = sizeof(inetd_sock); |
059ec3d9 PH |
4278 | if (getpeername(0, (struct sockaddr *)(&inetd_sock), &size) == 0) |
4279 | { | |
4280 | int family = ((struct sockaddr *)(&inetd_sock))->sa_family; | |
4281 | if (family == AF_INET || family == AF_INET6) | |
4282 | { | |
4283 | union sockaddr_46 interface_sock; | |
4284 | size = sizeof(interface_sock); | |
4285 | ||
4286 | if (getsockname(0, (struct sockaddr *)(&interface_sock), &size) == 0) | |
4287 | interface_address = host_ntoa(-1, &interface_sock, NULL, | |
4288 | &interface_port); | |
4289 | ||
817d9f57 | 4290 | if (host_is_tls_on_connect_port(interface_port)) tls_in.on_connect = TRUE; |
059ec3d9 PH |
4291 | |
4292 | if (real_uid == root_uid || real_uid == exim_uid || interface_port < 1024) | |
4293 | { | |
4294 | is_inetd = TRUE; | |
4295 | sender_host_address = host_ntoa(-1, (struct sockaddr *)(&inetd_sock), | |
4296 | NULL, &sender_host_port); | |
4297 | if (mua_wrapper) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Input from " | |
4298 | "inetd is not supported when mua_wrapper is set"); | |
4299 | } | |
4300 | else | |
4301 | { | |
4302 | fprintf(stderr, | |
4303 | "exim: Permission denied (unprivileged user, unprivileged port)\n"); | |
4304 | return EXIT_FAILURE; | |
4305 | } | |
4306 | } | |
4307 | } | |
4308 | } | |
4309 | ||
4310 | /* If the load average is going to be needed while receiving a message, get it | |
4311 | now for those OS that require the first call to os_getloadavg() to be done as | |
4312 | root. There will be further calls later for each message received. */ | |
4313 | ||
4314 | #ifdef LOAD_AVG_NEEDS_ROOT | |
4315 | if (receiving_message && | |
4316 | (queue_only_load >= 0 || | |
4317 | (is_inetd && smtp_load_reserve >= 0) | |
4318 | )) | |
4319 | { | |
8669f003 | 4320 | load_average = OS_GETLOADAVG(); |
059ec3d9 PH |
4321 | } |
4322 | #endif | |
4323 | ||
4324 | /* The queue_only configuration option can be overridden by -odx on the command | |
4325 | line, except that if queue_only_override is false, queue_only cannot be unset | |
4326 | from the command line. */ | |
4327 | ||
4328 | if (queue_only_set && (queue_only_override || arg_queue_only)) | |
4329 | queue_only = arg_queue_only; | |
4330 | ||
4331 | /* The receive_timeout and smtp_receive_timeout options can be overridden by | |
4332 | -or and -os. */ | |
4333 | ||
4334 | if (arg_receive_timeout >= 0) receive_timeout = arg_receive_timeout; | |
4335 | if (arg_smtp_receive_timeout >= 0) | |
4336 | smtp_receive_timeout = arg_smtp_receive_timeout; | |
4337 | ||
4338 | /* If Exim was started with root privilege, unless we have already removed the | |
4339 | root privilege above as a result of -C, -D, -be, -bf or -bF, remove it now | |
4340 | except when starting the daemon or doing some kind of delivery or address | |
4341 | testing (-bt). These are the only cases when root need to be retained. We run | |
4342 | as exim for -bv and -bh. However, if deliver_drop_privilege is set, root is | |
805e5aab TF |
4343 | retained only for starting the daemon. We always do the initgroups() in this |
4344 | situation (controlled by the TRUE below), in order to be as close as possible | |
4345 | to the state Exim usually runs in. */ | |
059ec3d9 PH |
4346 | |
4347 | if (!unprivileged && /* originally had root AND */ | |
4348 | !removed_privilege && /* still got root AND */ | |
4349 | !daemon_listen && /* not starting the daemon */ | |
4350 | queue_interval <= 0 && /* (either kind of daemon) */ | |
4351 | ( /* AND EITHER */ | |
4352 | deliver_drop_privilege || /* requested unprivileged */ | |
4353 | ( /* OR */ | |
4354 | queue_interval < 0 && /* not running the queue */ | |
4355 | (msg_action_arg < 0 || /* and */ | |
4356 | msg_action != MSG_DELIVER) && /* not delivering and */ | |
4357 | (!checking || !address_test_mode) /* not address checking */ | |
57cc2785 | 4358 | ) ) ) |
805e5aab | 4359 | exim_setugid(exim_uid, exim_gid, TRUE, US"privilege not needed"); |
059ec3d9 PH |
4360 | |
4361 | /* When we are retaining a privileged uid, we still change to the exim gid. */ | |
4362 | ||
1670ef10 PP |
4363 | else |
4364 | { | |
4365 | int rv; | |
4366 | rv = setgid(exim_gid); | |
4367 | /* Impact of failure is that some stuff might end up with an incorrect group. | |
4368 | We track this for failures from root, since any attempt to change privilege | |
4369 | by root should succeed and failures should be examined. For non-root, | |
4370 | there's no security risk. For me, it's { exim -bV } on a just-built binary, | |
4371 | no need to complain then. */ | |
4372 | if (rv == -1) | |
33191679 | 4373 | if (!(unprivileged || removed_privilege)) |
1670ef10 PP |
4374 | { |
4375 | fprintf(stderr, | |
4376 | "exim: changing group failed: %s\n", strerror(errno)); | |
4377 | exit(EXIT_FAILURE); | |
4378 | } | |
4379 | else | |
33191679 | 4380 | DEBUG(D_any) debug_printf("changing group to %ld failed: %s\n", |
1670ef10 | 4381 | (long int)exim_gid, strerror(errno)); |
1670ef10 | 4382 | } |
059ec3d9 | 4383 | |
8544e77a PP |
4384 | /* Handle a request to scan a file for malware */ |
4385 | if (malware_test_file) | |
4386 | { | |
dbc4b90d | 4387 | #ifdef WITH_CONTENT_SCAN |
8544e77a PP |
4388 | int result; |
4389 | set_process_info("scanning file for malware"); | |
4390 | result = malware_in_file(malware_test_file); | |
4391 | if (result == FAIL) | |
4392 | { | |
4393 | printf("No malware found.\n"); | |
4394 | exit(EXIT_SUCCESS); | |
4395 | } | |
4396 | if (result != OK) | |
4397 | { | |
4398 | printf("Malware lookup returned non-okay/fail: %d\n", result); | |
4399 | exit(EXIT_FAILURE); | |
4400 | } | |
4401 | if (malware_name) | |
4402 | printf("Malware found: %s\n", malware_name); | |
4403 | else | |
4404 | printf("Malware scan detected malware of unknown name.\n"); | |
dbc4b90d PP |
4405 | #else |
4406 | printf("Malware scanning not enabled at compile time.\n"); | |
4407 | #endif | |
8544e77a PP |
4408 | exit(EXIT_FAILURE); |
4409 | } | |
4410 | ||
059ec3d9 PH |
4411 | /* Handle a request to list the delivery queue */ |
4412 | ||
4413 | if (list_queue) | |
4414 | { | |
4415 | set_process_info("listing the queue"); | |
4416 | queue_list(list_queue_option, argv + recipients_arg, argc - recipients_arg); | |
4417 | exit(EXIT_SUCCESS); | |
4418 | } | |
4419 | ||
4420 | /* Handle a request to count the delivery queue */ | |
4421 | ||
4422 | if (count_queue) | |
4423 | { | |
4424 | set_process_info("counting the queue"); | |
4425 | queue_count(); | |
4426 | exit(EXIT_SUCCESS); | |
4427 | } | |
4428 | ||
0ef732d9 PH |
4429 | /* Handle actions on specific messages, except for the force delivery and |
4430 | message load actions, which are done below. Some actions take a whole list of | |
4431 | message ids, which are known to continue up to the end of the arguments. Others | |
4432 | take a single message id and then operate on the recipients list. */ | |
059ec3d9 | 4433 | |
0ef732d9 | 4434 | if (msg_action_arg > 0 && msg_action != MSG_DELIVER && msg_action != MSG_LOAD) |
059ec3d9 PH |
4435 | { |
4436 | int yield = EXIT_SUCCESS; | |
4437 | set_process_info("acting on specified messages"); | |
4438 | ||
4439 | if (!one_msg_action) | |
4440 | { | |
4441 | for (i = msg_action_arg; i < argc; i++) | |
4442 | if (!queue_action(argv[i], msg_action, NULL, 0, 0)) | |
4443 | yield = EXIT_FAILURE; | |
4444 | } | |
4445 | ||
4446 | else if (!queue_action(argv[msg_action_arg], msg_action, argv, argc, | |
4447 | recipients_arg)) yield = EXIT_FAILURE; | |
4448 | exit(yield); | |
4449 | } | |
4450 | ||
cb46fd2b JH |
4451 | /* We used to set up here to skip reading the ACL section, on |
4452 | (msg_action_arg > 0 || (queue_interval == 0 && !daemon_listen) | |
4453 | Now, since the intro of the ${acl } expansion, ACL definitions may be | |
4454 | needed in transports so we lost the optimisation. */ | |
059ec3d9 | 4455 | |
cb46fd2b | 4456 | readconf_rest(); |
059ec3d9 PH |
4457 | |
4458 | /* The configuration data will have been read into POOL_PERM because we won't | |
4459 | ever want to reset back past it. Change the current pool to POOL_MAIN. In fact, | |
4460 | this is just a bit of pedantic tidiness. It wouldn't really matter if the | |
4461 | configuration were read into POOL_MAIN, because we don't do any resets till | |
4462 | later on. However, it seems right, and it does ensure that both pools get used. | |
4463 | */ | |
4464 | ||
4465 | store_pool = POOL_MAIN; | |
4466 | ||
4467 | /* Handle the -brt option. This is for checking out retry configurations. | |
4468 | The next three arguments are a domain name or a complete address, and | |
4469 | optionally two error numbers. All it does is to call the function that | |
4470 | scans the retry configuration data. */ | |
4471 | ||
4472 | if (test_retry_arg >= 0) | |
4473 | { | |
4474 | retry_config *yield; | |
4475 | int basic_errno = 0; | |
4476 | int more_errno = 0; | |
4477 | uschar *s1, *s2; | |
4478 | ||
4479 | if (test_retry_arg >= argc) | |
4480 | { | |
4481 | printf("-brt needs a domain or address argument\n"); | |
9bfb7e1b | 4482 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4483 | } |
4484 | s1 = argv[test_retry_arg++]; | |
4485 | s2 = NULL; | |
4486 | ||
4487 | /* If the first argument contains no @ and no . it might be a local user | |
4488 | or it might be a single-component name. Treat as a domain. */ | |
4489 | ||
4490 | if (Ustrchr(s1, '@') == NULL && Ustrchr(s1, '.') == NULL) | |
4491 | { | |
4492 | printf("Warning: \"%s\" contains no '@' and no '.' characters. It is " | |
4493 | "being \ntreated as a one-component domain, not as a local part.\n\n", | |
4494 | s1); | |
4495 | } | |
4496 | ||
4497 | /* There may be an optional second domain arg. */ | |
4498 | ||
4499 | if (test_retry_arg < argc && Ustrchr(argv[test_retry_arg], '.') != NULL) | |
4500 | s2 = argv[test_retry_arg++]; | |
4501 | ||
4502 | /* The final arg is an error name */ | |
4503 | ||
4504 | if (test_retry_arg < argc) | |
4505 | { | |
4506 | uschar *ss = argv[test_retry_arg]; | |
4507 | uschar *error = | |
4508 | readconf_retry_error(ss, ss + Ustrlen(ss), &basic_errno, &more_errno); | |
4509 | if (error != NULL) | |
4510 | { | |
4511 | printf("%s\n", CS error); | |
4512 | return EXIT_FAILURE; | |
4513 | } | |
4514 | ||
e97957bc PH |
4515 | /* For the {MAIL,RCPT,DATA}_4xx errors, a value of 255 means "any", and a |
4516 | code > 100 as an error is for matching codes to the decade. Turn them into | |
4517 | a real error code, off the decade. */ | |
059ec3d9 | 4518 | |
e97957bc PH |
4519 | if (basic_errno == ERRNO_MAIL4XX || |
4520 | basic_errno == ERRNO_RCPT4XX || | |
4521 | basic_errno == ERRNO_DATA4XX) | |
059ec3d9 PH |
4522 | { |
4523 | int code = (more_errno >> 8) & 255; | |
4524 | if (code == 255) | |
4525 | more_errno = (more_errno & 0xffff00ff) | (21 << 8); | |
4526 | else if (code > 100) | |
4527 | more_errno = (more_errno & 0xffff00ff) | ((code - 96) << 8); | |
4528 | } | |
4529 | } | |
4530 | ||
32dfdf8b JH |
4531 | if (!(yield = retry_find_config(s1, s2, basic_errno, more_errno))) |
4532 | printf("No retry information found\n"); | |
4533 | else | |
059ec3d9 PH |
4534 | { |
4535 | retry_rule *r; | |
4536 | more_errno = yield->more_errno; | |
4537 | printf("Retry rule: %s ", yield->pattern); | |
4538 | ||
4539 | if (yield->basic_errno == ERRNO_EXIMQUOTA) | |
4540 | { | |
4541 | printf("quota%s%s ", | |
4542 | (more_errno > 0)? "_" : "", | |
4543 | (more_errno > 0)? readconf_printtime(more_errno) : US""); | |
4544 | } | |
4545 | else if (yield->basic_errno == ECONNREFUSED) | |
4546 | { | |
4547 | printf("refused%s%s ", | |
4548 | (more_errno > 0)? "_" : "", | |
4549 | (more_errno == 'M')? "MX" : | |
4550 | (more_errno == 'A')? "A" : ""); | |
4551 | } | |
4552 | else if (yield->basic_errno == ETIMEDOUT) | |
4553 | { | |
4554 | printf("timeout"); | |
4555 | if ((more_errno & RTEF_CTOUT) != 0) printf("_connect"); | |
4556 | more_errno &= 255; | |
4557 | if (more_errno != 0) printf("_%s", | |
4558 | (more_errno == 'M')? "MX" : "A"); | |
4559 | printf(" "); | |
4560 | } | |
4561 | else if (yield->basic_errno == ERRNO_AUTHFAIL) | |
4562 | printf("auth_failed "); | |
4563 | else printf("* "); | |
4564 | ||
32dfdf8b | 4565 | for (r = yield->rules; r; r = r->next) |
059ec3d9 PH |
4566 | { |
4567 | printf("%c,%s", r->rule, readconf_printtime(r->timeout)); /* Do not */ | |
4568 | printf(",%s", readconf_printtime(r->p1)); /* amalgamate */ | |
4569 | if (r->rule == 'G') | |
4570 | { | |
4571 | int x = r->p2; | |
4572 | int f = x % 1000; | |
4573 | int d = 100; | |
4574 | printf(",%d.", x/1000); | |
4575 | do | |
4576 | { | |
4577 | printf("%d", f/d); | |
4578 | f %= d; | |
4579 | d /= 10; | |
4580 | } | |
4581 | while (f != 0); | |
4582 | } | |
4583 | printf("; "); | |
4584 | } | |
4585 | ||
4586 | printf("\n"); | |
4587 | } | |
9bfb7e1b | 4588 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4589 | } |
4590 | ||
4591 | /* Handle a request to list one or more configuration options */ | |
12f69989 | 4592 | /* If -n was set, we suppress some information */ |
059ec3d9 PH |
4593 | |
4594 | if (list_options) | |
4595 | { | |
2be324ee | 4596 | BOOL fail = FALSE; |
059ec3d9 | 4597 | set_process_info("listing variables"); |
2be324ee JH |
4598 | if (recipients_arg >= argc) |
4599 | fail = !readconf_print(US"all", NULL, flag_n); | |
4600 | else for (i = recipients_arg; i < argc; i++) | |
4601 | { | |
4602 | if (i < argc - 1 && | |
4603 | (Ustrcmp(argv[i], "router") == 0 || | |
4604 | Ustrcmp(argv[i], "transport") == 0 || | |
4605 | Ustrcmp(argv[i], "authenticator") == 0 || | |
4606 | Ustrcmp(argv[i], "macro") == 0 || | |
4607 | Ustrcmp(argv[i], "environment") == 0)) | |
059ec3d9 | 4608 | { |
2be324ee JH |
4609 | fail |= !readconf_print(argv[i+1], argv[i], flag_n); |
4610 | i++; | |
059ec3d9 | 4611 | } |
2be324ee JH |
4612 | else |
4613 | fail = !readconf_print(argv[i], NULL, flag_n); | |
4614 | } | |
4615 | exim_exit(fail ? EXIT_FAILURE : EXIT_SUCCESS, US"main"); | |
059ec3d9 PH |
4616 | } |
4617 | ||
bf3c2c6b HSHR |
4618 | if (list_config) |
4619 | { | |
4620 | set_process_info("listing config"); | |
2be324ee JH |
4621 | exim_exit(readconf_print(US"config", NULL, flag_n) |
4622 | ? EXIT_SUCCESS : EXIT_FAILURE, US"main"); | |
bf3c2c6b HSHR |
4623 | } |
4624 | ||
059ec3d9 | 4625 | |
2592e6c0 JH |
4626 | /* Initialise subsystems as required */ |
4627 | #ifndef DISABLE_DKIM | |
4628 | dkim_exim_init(); | |
4629 | #endif | |
9094b84b | 4630 | deliver_init(); |
2592e6c0 JH |
4631 | |
4632 | ||
059ec3d9 | 4633 | /* Handle a request to deliver one or more messages that are already on the |
0ef732d9 PH |
4634 | queue. Values of msg_action other than MSG_DELIVER and MSG_LOAD are dealt with |
4635 | above. MSG_LOAD is handled with -be (which is the only time it applies) below. | |
4636 | ||
4637 | Delivery of specific messages is typically used for a small number when | |
4638 | prodding by hand (when the option forced_delivery will be set) or when | |
4639 | re-execing to regain root privilege. Each message delivery must happen in a | |
4640 | separate process, so we fork a process for each one, and run them sequentially | |
4641 | so that debugging output doesn't get intertwined, and to avoid spawning too | |
4642 | many processes if a long list is given. However, don't fork for the last one; | |
4643 | this saves a process in the common case when Exim is called to deliver just one | |
4644 | message. */ | |
4645 | ||
4646 | if (msg_action_arg > 0 && msg_action != MSG_LOAD) | |
059ec3d9 PH |
4647 | { |
4648 | if (prod_requires_admin && !admin_user) | |
4649 | { | |
4650 | fprintf(stderr, "exim: Permission denied\n"); | |
9bfb7e1b | 4651 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4652 | } |
4653 | set_process_info("delivering specified messages"); | |
4654 | if (deliver_give_up) forced_delivery = deliver_force_thaw = TRUE; | |
4655 | for (i = msg_action_arg; i < argc; i++) | |
4656 | { | |
4657 | int status; | |
4658 | pid_t pid; | |
4659 | if (i == argc - 1) | |
4660 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4661 | else if ((pid = fork()) == 0) | |
4662 | { | |
4663 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4664 | _exit(EXIT_SUCCESS); | |
4665 | } | |
4666 | else if (pid < 0) | |
4667 | { | |
4668 | fprintf(stderr, "failed to fork delivery process for %s: %s\n", argv[i], | |
4669 | strerror(errno)); | |
9bfb7e1b | 4670 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4671 | } |
4672 | else wait(&status); | |
4673 | } | |
9bfb7e1b | 4674 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4675 | } |
4676 | ||
4677 | ||
4678 | /* If only a single queue run is requested, without SMTP listening, we can just | |
4679 | turn into a queue runner, with an optional starting message id. */ | |
4680 | ||
4681 | if (queue_interval == 0 && !daemon_listen) | |
4682 | { | |
4683 | DEBUG(D_queue_run) debug_printf("Single queue run%s%s%s%s\n", | |
4684 | (start_queue_run_id == NULL)? US"" : US" starting at ", | |
4685 | (start_queue_run_id == NULL)? US"" : start_queue_run_id, | |
4686 | (stop_queue_run_id == NULL)? US"" : US" stopping at ", | |
4687 | (stop_queue_run_id == NULL)? US"" : stop_queue_run_id); | |
6073ad45 | 4688 | if (*queue_name) |
4d146046 | 4689 | set_process_info("running the '%s' queue (single queue run)", queue_name); |
6073ad45 JH |
4690 | else |
4691 | set_process_info("running the queue (single queue run)"); | |
059ec3d9 | 4692 | queue_run(start_queue_run_id, stop_queue_run_id, FALSE); |
9bfb7e1b | 4693 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4694 | } |
4695 | ||
4696 | ||
4697 | /* Find the login name of the real user running this process. This is always | |
4698 | needed when receiving a message, because it is written into the spool file. It | |
4699 | may also be used to construct a from: or a sender: header, and in this case we | |
4700 | need the user's full name as well, so save a copy of it, checked for RFC822 | |
4701 | syntax and munged if necessary, if it hasn't previously been set by the -F | |
4702 | argument. We may try to get the passwd entry more than once, in case NIS or | |
4703 | other delays are in evidence. Save the home directory for use in filter testing | |
4704 | (only). */ | |
4705 | ||
4706 | for (i = 0;;) | |
4707 | { | |
4708 | if ((pw = getpwuid(real_uid)) != NULL) | |
4709 | { | |
4710 | originator_login = string_copy(US pw->pw_name); | |
4711 | originator_home = string_copy(US pw->pw_dir); | |
4712 | ||
4713 | /* If user name has not been set by -F, set it from the passwd entry | |
4714 | unless -f has been used to set the sender address by a trusted user. */ | |
4715 | ||
bb07bcd3 | 4716 | if (!originator_name) |
059ec3d9 | 4717 | { |
bb07bcd3 | 4718 | if (!sender_address || (!trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 PH |
4719 | { |
4720 | uschar *name = US pw->pw_gecos; | |
4721 | uschar *amp = Ustrchr(name, '&'); | |
4722 | uschar buffer[256]; | |
4723 | ||
4724 | /* Most Unix specify that a '&' character in the gecos field is | |
4725 | replaced by a copy of the login name, and some even specify that | |
4726 | the first character should be upper cased, so that's what we do. */ | |
4727 | ||
bb07bcd3 | 4728 | if (amp) |
059ec3d9 PH |
4729 | { |
4730 | int loffset; | |
4731 | string_format(buffer, sizeof(buffer), "%.*s%n%s%s", | |
bb07bcd3 | 4732 | (int)(amp - name), name, &loffset, originator_login, amp + 1); |
059ec3d9 PH |
4733 | buffer[loffset] = toupper(buffer[loffset]); |
4734 | name = buffer; | |
4735 | } | |
4736 | ||
4737 | /* If a pattern for matching the gecos field was supplied, apply | |
4738 | it and then expand the name string. */ | |
4739 | ||
bb07bcd3 | 4740 | if (gecos_pattern && gecos_name) |
059ec3d9 PH |
4741 | { |
4742 | const pcre *re; | |
4743 | re = regex_must_compile(gecos_pattern, FALSE, TRUE); /* Use malloc */ | |
4744 | ||
4745 | if (regex_match_and_setup(re, name, 0, -1)) | |
4746 | { | |
4747 | uschar *new_name = expand_string(gecos_name); | |
4748 | expand_nmax = -1; | |
bb07bcd3 | 4749 | if (new_name) |
059ec3d9 PH |
4750 | { |
4751 | DEBUG(D_receive) debug_printf("user name \"%s\" extracted from " | |
4752 | "gecos field \"%s\"\n", new_name, name); | |
4753 | name = new_name; | |
4754 | } | |
4755 | else DEBUG(D_receive) debug_printf("failed to expand gecos_name string " | |
4756 | "\"%s\": %s\n", gecos_name, expand_string_message); | |
4757 | } | |
4758 | else DEBUG(D_receive) debug_printf("gecos_pattern \"%s\" did not match " | |
4759 | "gecos field \"%s\"\n", gecos_pattern, name); | |
4760 | store_free((void *)re); | |
4761 | } | |
4762 | originator_name = string_copy(name); | |
4763 | } | |
4764 | ||
4765 | /* A trusted caller has used -f but not -F */ | |
4766 | ||
4767 | else originator_name = US""; | |
4768 | } | |
4769 | ||
4770 | /* Break the retry loop */ | |
4771 | ||
4772 | break; | |
4773 | } | |
4774 | ||
4775 | if (++i > finduser_retries) break; | |
4776 | sleep(1); | |
4777 | } | |
4778 | ||
4779 | /* If we cannot get a user login, log the incident and give up, unless the | |
4780 | configuration specifies something to use. When running in the test harness, | |
8800895a | 4781 | any setting of unknown_login overrides the actual name. */ |
059ec3d9 PH |
4782 | |
4783 | if (originator_login == NULL || running_in_test_harness) | |
4784 | { | |
4785 | if (unknown_login != NULL) | |
4786 | { | |
4787 | originator_login = expand_string(unknown_login); | |
4788 | if (originator_name == NULL && unknown_username != NULL) | |
4789 | originator_name = expand_string(unknown_username); | |
4790 | if (originator_name == NULL) originator_name = US""; | |
4791 | } | |
4792 | if (originator_login == NULL) | |
4793 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to get user name for uid %d", | |
4794 | (int)real_uid); | |
4795 | } | |
4796 | ||
4797 | /* Ensure that the user name is in a suitable form for use as a "phrase" in an | |
4798 | RFC822 address.*/ | |
4799 | ||
4800 | originator_name = string_copy(parse_fix_phrase(originator_name, | |
4801 | Ustrlen(originator_name), big_buffer, big_buffer_size)); | |
4802 | ||
4803 | /* If a message is created by this call of Exim, the uid/gid of its originator | |
4804 | are those of the caller. These values are overridden if an existing message is | |
4805 | read in from the spool. */ | |
4806 | ||
4807 | originator_uid = real_uid; | |
4808 | originator_gid = real_gid; | |
4809 | ||
4810 | DEBUG(D_receive) debug_printf("originator: uid=%d gid=%d login=%s name=%s\n", | |
4811 | (int)originator_uid, (int)originator_gid, originator_login, originator_name); | |
4812 | ||
4813 | /* Run in daemon and/or queue-running mode. The function daemon_go() never | |
4814 | returns. We leave this till here so that the originator_ fields are available | |
47c7a64a PH |
4815 | for incoming messages via the daemon. The daemon cannot be run in mua_wrapper |
4816 | mode. */ | |
059ec3d9 | 4817 | |
9ee44efb | 4818 | if (daemon_listen || inetd_wait_mode || queue_interval > 0) |
059ec3d9 | 4819 | { |
47c7a64a PH |
4820 | if (mua_wrapper) |
4821 | { | |
4822 | fprintf(stderr, "Daemon cannot be run when mua_wrapper is set\n"); | |
4823 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Daemon cannot be run when " | |
4824 | "mua_wrapper is set"); | |
4825 | } | |
059ec3d9 PH |
4826 | daemon_go(); |
4827 | } | |
4828 | ||
4829 | /* If the sender ident has not been set (by a trusted caller) set it to | |
4830 | the caller. This will get overwritten below for an inetd call. If a trusted | |
4831 | caller has set it empty, unset it. */ | |
4832 | ||
4833 | if (sender_ident == NULL) sender_ident = originator_login; | |
4834 | else if (sender_ident[0] == 0) sender_ident = NULL; | |
4835 | ||
4836 | /* Handle the -brw option, which is for checking out rewriting rules. Cause log | |
4837 | writes (on errors) to go to stderr instead. Can't do this earlier, as want the | |
4838 | originator_* variables set. */ | |
4839 | ||
4840 | if (test_rewrite_arg >= 0) | |
4841 | { | |
4842 | really_exim = FALSE; | |
4843 | if (test_rewrite_arg >= argc) | |
4844 | { | |
4845 | printf("-brw needs an address argument\n"); | |
9bfb7e1b | 4846 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
4847 | } |
4848 | rewrite_test(argv[test_rewrite_arg]); | |
9bfb7e1b | 4849 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
4850 | } |
4851 | ||
4852 | /* A locally-supplied message is considered to be coming from a local user | |
4853 | unless a trusted caller supplies a sender address with -f, or is passing in the | |
4854 | message via SMTP (inetd invocation or otherwise). */ | |
4855 | ||
4856 | if ((sender_address == NULL && !smtp_input) || | |
f05da2e8 | 4857 | (!trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 PH |
4858 | { |
4859 | sender_local = TRUE; | |
4860 | ||
4861 | /* A trusted caller can supply authenticated_sender and authenticated_id | |
33d73e3b PH |
4862 | via -oMas and -oMai and if so, they will already be set. Otherwise, force |
4863 | defaults except when host checking. */ | |
059ec3d9 | 4864 | |
33d73e3b | 4865 | if (authenticated_sender == NULL && !host_checking) |
059ec3d9 PH |
4866 | authenticated_sender = string_sprintf("%s@%s", originator_login, |
4867 | qualify_domain_sender); | |
33d73e3b PH |
4868 | if (authenticated_id == NULL && !host_checking) |
4869 | authenticated_id = originator_login; | |
059ec3d9 PH |
4870 | } |
4871 | ||
4872 | /* Trusted callers are always permitted to specify the sender address. | |
4873 | Untrusted callers may specify it if it matches untrusted_set_sender, or if what | |
4874 | is specified is the empty address. However, if a trusted caller does not | |
4875 | specify a sender address for SMTP input, we leave sender_address unset. This | |
4876 | causes the MAIL commands to be honoured. */ | |
4877 | ||
4878 | if ((!smtp_input && sender_address == NULL) || | |
4879 | !receive_check_set_sender(sender_address)) | |
4880 | { | |
4881 | /* Either the caller is not permitted to set a general sender, or this is | |
4882 | non-SMTP input and the trusted caller has not set a sender. If there is no | |
4883 | sender, or if a sender other than <> is set, override with the originator's | |
4884 | login (which will get qualified below), except when checking things. */ | |
4885 | ||
4886 | if (sender_address == NULL /* No sender_address set */ | |
4887 | || /* OR */ | |
4888 | (sender_address[0] != 0 && /* Non-empty sender address, AND */ | |
34e86e20 | 4889 | !checking)) /* Not running tests, including filter tests */ |
059ec3d9 PH |
4890 | { |
4891 | sender_address = originator_login; | |
4892 | sender_address_forced = FALSE; | |
4893 | sender_address_domain = 0; | |
4894 | } | |
4895 | } | |
4896 | ||
4897 | /* Remember whether an untrusted caller set the sender address */ | |
4898 | ||
4899 | sender_set_untrusted = sender_address != originator_login && !trusted_caller; | |
4900 | ||
4901 | /* Ensure that the sender address is fully qualified unless it is the empty | |
4902 | address, which indicates an error message, or doesn't exist (root caller, smtp | |
4903 | interface, no -f argument). */ | |
4904 | ||
4905 | if (sender_address != NULL && sender_address[0] != 0 && | |
4906 | sender_address_domain == 0) | |
4907 | sender_address = string_sprintf("%s@%s", local_part_quote(sender_address), | |
4908 | qualify_domain_sender); | |
4909 | ||
4910 | DEBUG(D_receive) debug_printf("sender address = %s\n", sender_address); | |
4911 | ||
4912 | /* Handle a request to verify a list of addresses, or test them for delivery. | |
4913 | This must follow the setting of the sender address, since routers can be | |
4914 | predicated upon the sender. If no arguments are given, read addresses from | |
4915 | stdin. Set debug_level to at least D_v to get full output for address testing. | |
4916 | */ | |
4917 | ||
4918 | if (verify_address_mode || address_test_mode) | |
4919 | { | |
4920 | int exit_value = 0; | |
4921 | int flags = vopt_qualify; | |
4922 | ||
4923 | if (verify_address_mode) | |
4924 | { | |
4925 | if (!verify_as_sender) flags |= vopt_is_recipient; | |
4926 | DEBUG(D_verify) debug_print_ids(US"Verifying:"); | |
4927 | } | |
4928 | ||
4929 | else | |
4930 | { | |
4931 | flags |= vopt_is_recipient; | |
4932 | debug_selector |= D_v; | |
4933 | debug_file = stderr; | |
4934 | debug_fd = fileno(debug_file); | |
4935 | DEBUG(D_verify) debug_print_ids(US"Address testing:"); | |
4936 | } | |
4937 | ||
4938 | if (recipients_arg < argc) | |
4939 | { | |
4940 | while (recipients_arg < argc) | |
4941 | { | |
4942 | uschar *s = argv[recipients_arg++]; | |
4943 | while (*s != 0) | |
4944 | { | |
4945 | BOOL finished = FALSE; | |
4946 | uschar *ss = parse_find_address_end(s, FALSE); | |
4947 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
4948 | test_address(s, flags, &exit_value); | |
4949 | s = ss; | |
4950 | if (!finished) | |
4951 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
4952 | } | |
4953 | } | |
4954 | } | |
4955 | ||
4956 | else for (;;) | |
4957 | { | |
4958 | uschar *s = get_stdinput(NULL, NULL); | |
4959 | if (s == NULL) break; | |
4960 | test_address(s, flags, &exit_value); | |
4961 | } | |
4962 | ||
4963 | route_tidyup(); | |
9bfb7e1b | 4964 | exim_exit(exit_value, US"main"); |
059ec3d9 PH |
4965 | } |
4966 | ||
0ef732d9 PH |
4967 | /* Handle expansion checking. Either expand items on the command line, or read |
4968 | from stdin if there aren't any. If -Mset was specified, load the message so | |
328895cc PH |
4969 | that its variables can be used, but restrict this facility to admin users. |
4970 | Otherwise, if -bem was used, read a message from stdin. */ | |
059ec3d9 PH |
4971 | |
4972 | if (expansion_test) | |
4973 | { | |
03f68c52 | 4974 | dns_init(FALSE, FALSE, FALSE); |
0ef732d9 PH |
4975 | if (msg_action_arg > 0 && msg_action == MSG_LOAD) |
4976 | { | |
4977 | uschar spoolname[256]; /* Not big_buffer; used in spool_read_header() */ | |
4978 | if (!admin_user) | |
4979 | { | |
4980 | fprintf(stderr, "exim: permission denied\n"); | |
4981 | exit(EXIT_FAILURE); | |
4982 | } | |
4983 | message_id = argv[msg_action_arg]; | |
4984 | (void)string_format(spoolname, sizeof(spoolname), "%s-H", message_id); | |
789f8a4f | 4985 | if ((deliver_datafile = spool_open_datafile(message_id)) < 0) |
0ef732d9 PH |
4986 | printf ("Failed to load message datafile %s\n", message_id); |
4987 | if (spool_read_header(spoolname, TRUE, FALSE) != spool_read_OK) | |
4988 | printf ("Failed to load message %s\n", message_id); | |
4989 | } | |
4990 | ||
328895cc PH |
4991 | /* Read a test message from a file. We fudge it up to be on stdin, saving |
4992 | stdin itself for later reading of expansion strings. */ | |
4993 | ||
9650d98a | 4994 | else if (expansion_test_message) |
328895cc PH |
4995 | { |
4996 | int save_stdin = dup(0); | |
4997 | int fd = Uopen(expansion_test_message, O_RDONLY, 0); | |
4998 | if (fd < 0) | |
4999 | { | |
5000 | fprintf(stderr, "exim: failed to open %s: %s\n", expansion_test_message, | |
5001 | strerror(errno)); | |
5002 | return EXIT_FAILURE; | |
5003 | } | |
5004 | (void) dup2(fd, 0); | |
5005 | filter_test = FTEST_USER; /* Fudge to make it look like filter test */ | |
5006 | message_ended = END_NOTENDED; | |
5007 | read_message_body(receive_msg(extract_recipients)); | |
2d2b05f4 | 5008 | message_linecount += body_linecount; |
328895cc PH |
5009 | (void)dup2(save_stdin, 0); |
5010 | (void)close(save_stdin); | |
935ff400 | 5011 | clearerr(stdin); /* Required by Darwin */ |
328895cc PH |
5012 | } |
5013 | ||
9650d98a JH |
5014 | /* Only admin users may see config-file macros this way */ |
5015 | ||
85e03244 | 5016 | if (!admin_user) macros_user = macros = mlast = NULL; |
9650d98a | 5017 | |
328895cc PH |
5018 | /* Allow $recipients for this testing */ |
5019 | ||
5020 | enable_dollar_recipients = TRUE; | |
5021 | ||
0ef732d9 PH |
5022 | /* Expand command line items */ |
5023 | ||
059ec3d9 | 5024 | if (recipients_arg < argc) |
059ec3d9 | 5025 | while (recipients_arg < argc) |
9650d98a | 5026 | expansion_test_line(argv[recipients_arg++]); |
059ec3d9 PH |
5027 | |
5028 | /* Read stdin */ | |
5029 | ||
5030 | else | |
5031 | { | |
1ba28e2b PP |
5032 | char *(*fn_readline)(const char *) = NULL; |
5033 | void (*fn_addhist)(const char *) = NULL; | |
9650d98a | 5034 | uschar * s; |
059ec3d9 | 5035 | |
9650d98a | 5036 | #ifdef USE_READLINE |
059ec3d9 | 5037 | void *dlhandle = set_readline(&fn_readline, &fn_addhist); |
9650d98a | 5038 | #endif |
059ec3d9 | 5039 | |
9650d98a JH |
5040 | while (s = get_stdinput(fn_readline, fn_addhist)) |
5041 | expansion_test_line(s); | |
059ec3d9 | 5042 | |
9650d98a JH |
5043 | #ifdef USE_READLINE |
5044 | if (dlhandle) dlclose(dlhandle); | |
5045 | #endif | |
059ec3d9 PH |
5046 | } |
5047 | ||
0ef732d9 PH |
5048 | /* The data file will be open after -Mset */ |
5049 | ||
5050 | if (deliver_datafile >= 0) | |
5051 | { | |
5052 | (void)close(deliver_datafile); | |
5053 | deliver_datafile = -1; | |
5054 | } | |
5055 | ||
9650d98a | 5056 | exim_exit(EXIT_SUCCESS, US"main: expansion test"); |
059ec3d9 PH |
5057 | } |
5058 | ||
5059 | ||
5060 | /* The active host name is normally the primary host name, but it can be varied | |
5061 | for hosts that want to play several parts at once. We need to ensure that it is | |
5062 | set for host checking, and for receiving messages. */ | |
5063 | ||
5064 | smtp_active_hostname = primary_hostname; | |
5065 | if (raw_active_hostname != NULL) | |
5066 | { | |
5067 | uschar *nah = expand_string(raw_active_hostname); | |
5068 | if (nah == NULL) | |
5069 | { | |
5070 | if (!expand_string_forcedfail) | |
5071 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand \"%s\" " | |
5072 | "(smtp_active_hostname): %s", raw_active_hostname, | |
5073 | expand_string_message); | |
5074 | } | |
5075 | else if (nah[0] != 0) smtp_active_hostname = nah; | |
5076 | } | |
5077 | ||
5078 | /* Handle host checking: this facility mocks up an incoming SMTP call from a | |
33d73e3b PH |
5079 | given IP address so that the blocking and relay configuration can be tested. |
5080 | Unless a sender_ident was set by -oMt, we discard it (the default is the | |
5081 | caller's login name). An RFC 1413 call is made only if we are running in the | |
5082 | test harness and an incoming interface and both ports are specified, because | |
5083 | there is no TCP/IP call to find the ident for. */ | |
059ec3d9 PH |
5084 | |
5085 | if (host_checking) | |
5086 | { | |
8e669ac1 | 5087 | int x[4]; |
6f0c9a4f | 5088 | int size; |
8e669ac1 | 5089 | |
33d73e3b PH |
5090 | if (!sender_ident_set) |
5091 | { | |
5092 | sender_ident = NULL; | |
5093 | if (running_in_test_harness && sender_host_port != 0 && | |
5094 | interface_address != NULL && interface_port != 0) | |
5095 | verify_get_ident(1413); | |
5096 | } | |
8e669ac1 | 5097 | |
4c04137d | 5098 | /* In case the given address is a non-canonical IPv6 address, canonicalize |
6f0c9a4f | 5099 | it. The code works for both IPv4 and IPv6, as it happens. */ |
8e669ac1 | 5100 | |
6f0c9a4f PH |
5101 | size = host_aton(sender_host_address, x); |
5102 | sender_host_address = store_get(48); /* large enough for full IPv6 */ | |
5103 | (void)host_nmtoa(size, x, -1, sender_host_address, ':'); | |
5104 | ||
5105 | /* Now set up for testing */ | |
059ec3d9 PH |
5106 | |
5107 | host_build_sender_fullhost(); | |
5108 | smtp_input = TRUE; | |
5109 | smtp_in = stdin; | |
5110 | smtp_out = stdout; | |
5111 | sender_local = FALSE; | |
5112 | sender_host_notsocket = TRUE; | |
5113 | debug_file = stderr; | |
5114 | debug_fd = fileno(debug_file); | |
5115 | fprintf(stdout, "\n**** SMTP testing session as if from host %s\n" | |
5116 | "**** but without any ident (RFC 1413) callback.\n" | |
5117 | "**** This is not for real!\n\n", | |
5118 | sender_host_address); | |
5119 | ||
ce325893 | 5120 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 5121 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 5122 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
5123 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
5124 | ||
24796b8d PH |
5125 | /* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, |
5126 | because a log line has already been written for all its failure exists | |
5127 | (usually "connection refused: <reason>") and writing another one is | |
5128 | unnecessary clutter. */ | |
5129 | ||
059ec3d9 PH |
5130 | if (smtp_start_session()) |
5131 | { | |
90341c71 | 5132 | for (reset_point = store_get(0); ; store_reset(reset_point)) |
059ec3d9 | 5133 | { |
059ec3d9 PH |
5134 | if (smtp_setup_msg() <= 0) break; |
5135 | if (!receive_msg(FALSE)) break; | |
90341c71 JH |
5136 | |
5137 | return_path = sender_address = NULL; | |
5138 | dnslist_domain = dnslist_matched = NULL; | |
5139 | #ifndef DISABLE_DKIM | |
5140 | dkim_cur_signer = NULL; | |
5141 | #endif | |
5142 | acl_var_m = NULL; | |
5143 | deliver_localpart_orig = NULL; | |
5144 | deliver_domain_orig = NULL; | |
5145 | callout_address = sending_ip_address = NULL; | |
5146 | sender_rate = sender_rate_limit = sender_rate_period = NULL; | |
059ec3d9 | 5147 | } |
24796b8d | 5148 | smtp_log_no_mail(); |
059ec3d9 | 5149 | } |
9bfb7e1b | 5150 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
5151 | } |
5152 | ||
5153 | ||
5154 | /* Arrange for message reception if recipients or SMTP were specified; | |
5155 | otherwise complain unless a version print (-bV) happened or this is a filter | |
98a90c36 PP |
5156 | verification test or info dump. |
5157 | In the former case, show the configuration file name. */ | |
059ec3d9 PH |
5158 | |
5159 | if (recipients_arg >= argc && !extract_recipients && !smtp_input) | |
5160 | { | |
5161 | if (version_printed) | |
5162 | { | |
36f7a17f HSHR |
5163 | if (Ustrchr(config_main_filelist, ':')) |
5164 | printf("Configuration file search path is %s\n", config_main_filelist); | |
059ec3d9 PH |
5165 | printf("Configuration file is %s\n", config_main_filename); |
5166 | return EXIT_SUCCESS; | |
5167 | } | |
81ea09ca | 5168 | |
98a90c36 PP |
5169 | if (info_flag != CMDINFO_NONE) |
5170 | { | |
5171 | show_exim_information(info_flag, info_stdout ? stdout : stderr); | |
5172 | return info_stdout ? EXIT_SUCCESS : EXIT_FAILURE; | |
5173 | } | |
5174 | ||
f05da2e8 | 5175 | if (filter_test == FTEST_NONE) |
81ea09ca | 5176 | exim_usage(called_as); |
059ec3d9 PH |
5177 | } |
5178 | ||
5179 | ||
5180 | /* If mua_wrapper is set, Exim is being used to turn an MUA that submits on the | |
5181 | standard input into an MUA that submits to a smarthost over TCP/IP. We know | |
5182 | that we are not called from inetd, because that is rejected above. The | |
5183 | following configuration settings are forced here: | |
5184 | ||
5185 | (1) Synchronous delivery (-odi) | |
5186 | (2) Errors to stderr (-oep == -oeq) | |
5187 | (3) No parallel remote delivery | |
5188 | (4) Unprivileged delivery | |
5189 | ||
5190 | We don't force overall queueing options because there are several of them; | |
5191 | instead, queueing is avoided below when mua_wrapper is set. However, we do need | |
5192 | to override any SMTP queueing. */ | |
5193 | ||
5194 | if (mua_wrapper) | |
5195 | { | |
5196 | synchronous_delivery = TRUE; | |
5197 | arg_error_handling = ERRORS_STDERR; | |
5198 | remote_max_parallel = 1; | |
5199 | deliver_drop_privilege = TRUE; | |
5200 | queue_smtp = FALSE; | |
5201 | queue_smtp_domains = NULL; | |
8c5d388a | 5202 | #ifdef SUPPORT_I18N |
0ec7e948 JH |
5203 | message_utf8_downconvert = -1; /* convert-if-needed */ |
5204 | #endif | |
059ec3d9 PH |
5205 | } |
5206 | ||
5207 | ||
5208 | /* Prepare to accept one or more new messages on the standard input. When a | |
5209 | message has been read, its id is returned in message_id[]. If doing immediate | |
5210 | delivery, we fork a delivery process for each received message, except for the | |
5211 | last one, where we can save a process switch. | |
5212 | ||
5213 | It is only in non-smtp mode that error_handling is allowed to be changed from | |
5214 | its default of ERRORS_SENDER by argument. (Idle thought: are any of the | |
5215 | sendmail error modes other than -oem ever actually used? Later: yes.) */ | |
5216 | ||
5217 | if (!smtp_input) error_handling = arg_error_handling; | |
5218 | ||
5219 | /* If this is an inetd call, ensure that stderr is closed to prevent panic | |
5220 | logging being sent down the socket and make an identd call to get the | |
5221 | sender_ident. */ | |
5222 | ||
5223 | else if (is_inetd) | |
5224 | { | |
1fe64dcc | 5225 | (void)fclose(stderr); |
059ec3d9 PH |
5226 | exim_nullstd(); /* Re-open to /dev/null */ |
5227 | verify_get_ident(IDENT_PORT); | |
5228 | host_build_sender_fullhost(); | |
5229 | set_process_info("handling incoming connection from %s via inetd", | |
5230 | sender_fullhost); | |
5231 | } | |
5232 | ||
5233 | /* If the sender host address has been set, build sender_fullhost if it hasn't | |
5234 | already been done (which it will have been for inetd). This caters for the | |
5235 | case when it is forced by -oMa. However, we must flag that it isn't a socket, | |
5236 | so that the test for IP options is skipped for -bs input. */ | |
5237 | ||
2d0dc929 | 5238 | if (sender_host_address && !sender_fullhost) |
059ec3d9 PH |
5239 | { |
5240 | host_build_sender_fullhost(); | |
5241 | set_process_info("handling incoming connection from %s via -oMa", | |
5242 | sender_fullhost); | |
5243 | sender_host_notsocket = TRUE; | |
5244 | } | |
5245 | ||
5246 | /* Otherwise, set the sender host as unknown except for inetd calls. This | |
5247 | prevents host checking in the case of -bs not from inetd and also for -bS. */ | |
5248 | ||
5249 | else if (!is_inetd) sender_host_unknown = TRUE; | |
5250 | ||
5251 | /* If stdout does not exist, then dup stdin to stdout. This can happen | |
5252 | if exim is started from inetd. In this case fd 0 will be set to the socket, | |
5253 | but fd 1 will not be set. This also happens for passed SMTP channels. */ | |
5254 | ||
1fe64dcc | 5255 | if (fstat(1, &statbuf) < 0) (void)dup2(0, 1); |
059ec3d9 | 5256 | |
273f34d0 PH |
5257 | /* Set up the incoming protocol name and the state of the program. Root is |
5258 | allowed to force received protocol via the -oMr option above. If we have come | |
5259 | via inetd, the process info has already been set up. We don't set | |
5260 | received_protocol here for smtp input, as it varies according to | |
5261 | batch/HELO/EHLO/AUTH/TLS. */ | |
059ec3d9 PH |
5262 | |
5263 | if (smtp_input) | |
5264 | { | |
273f34d0 PH |
5265 | if (!is_inetd) set_process_info("accepting a local %sSMTP message from <%s>", |
5266 | smtp_batched_input? "batched " : "", | |
5267 | (sender_address!= NULL)? sender_address : originator_login); | |
059ec3d9 PH |
5268 | } |
5269 | else | |
5270 | { | |
90341c71 JH |
5271 | int old_pool = store_pool; |
5272 | store_pool = POOL_PERM; | |
5273 | if (!received_protocol) | |
059ec3d9 | 5274 | received_protocol = string_sprintf("local%s", called_as); |
90341c71 | 5275 | store_pool = old_pool; |
059ec3d9 PH |
5276 | set_process_info("accepting a local non-SMTP message from <%s>", |
5277 | sender_address); | |
5278 | } | |
5279 | ||
8669f003 PH |
5280 | /* Initialize the session_local_queue-only flag (this will be ignored if |
5281 | mua_wrapper is set) */ | |
059ec3d9 PH |
5282 | |
5283 | queue_check_only(); | |
8669f003 | 5284 | session_local_queue_only = queue_only; |
059ec3d9 PH |
5285 | |
5286 | /* For non-SMTP and for batched SMTP input, check that there is enough space on | |
5287 | the spool if so configured. On failure, we must not attempt to send an error | |
5288 | message! (For interactive SMTP, the check happens at MAIL FROM and an SMTP | |
5289 | error code is given.) */ | |
5290 | ||
5291 | if ((!smtp_input || smtp_batched_input) && !receive_check_fs(0)) | |
5292 | { | |
5293 | fprintf(stderr, "exim: insufficient disk space\n"); | |
5294 | return EXIT_FAILURE; | |
5295 | } | |
5296 | ||
273f34d0 PH |
5297 | /* If this is smtp input of any kind, real or batched, handle the start of the |
5298 | SMTP session. | |
24796b8d PH |
5299 | |
5300 | NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, | |
5301 | because a log line has already been written for all its failure exists | |
5302 | (usually "connection refused: <reason>") and writing another one is | |
5303 | unnecessary clutter. */ | |
059ec3d9 PH |
5304 | |
5305 | if (smtp_input) | |
5306 | { | |
5307 | smtp_in = stdin; | |
5308 | smtp_out = stdout; | |
ce325893 | 5309 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 5310 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 5311 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
5312 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
5313 | if (!smtp_start_session()) | |
5314 | { | |
5315 | mac_smtp_fflush(); | |
9bfb7e1b | 5316 | exim_exit(EXIT_SUCCESS, US"smtp_start toplevel"); |
059ec3d9 PH |
5317 | } |
5318 | } | |
5319 | ||
45b91596 | 5320 | /* Otherwise, set up the input size limit here. */ |
059ec3d9 PH |
5321 | |
5322 | else | |
5323 | { | |
d45b1de8 | 5324 | thismessage_size_limit = expand_string_integer(message_size_limit, TRUE); |
57cc2785 | 5325 | if (expand_string_message) |
059ec3d9 PH |
5326 | if (thismessage_size_limit == -1) |
5327 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand " | |
5328 | "message_size_limit: %s", expand_string_message); | |
5329 | else | |
5330 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "invalid value for " | |
5331 | "message_size_limit: %s", expand_string_message); | |
059ec3d9 PH |
5332 | } |
5333 | ||
5334 | /* Loop for several messages when reading SMTP input. If we fork any child | |
5335 | processes, we don't want to wait for them unless synchronous delivery is | |
5336 | requested, so set SIGCHLD to SIG_IGN in that case. This is not necessarily the | |
5337 | same as SIG_DFL, despite the fact that documentation often lists the default as | |
5338 | "ignore". This is a confusing area. This is what I know: | |
5339 | ||
5340 | At least on some systems (e.g. Solaris), just setting SIG_IGN causes child | |
5341 | processes that complete simply to go away without ever becoming defunct. You | |
5342 | can't then wait for them - but we don't want to wait for them in the | |
5343 | non-synchronous delivery case. However, this behaviour of SIG_IGN doesn't | |
5344 | happen for all OS (e.g. *BSD is different). | |
5345 | ||
5346 | But that's not the end of the story. Some (many? all?) systems have the | |
5347 | SA_NOCLDWAIT option for sigaction(). This requests the behaviour that Solaris | |
5348 | has by default, so it seems that the difference is merely one of default | |
5349 | (compare restarting vs non-restarting signals). | |
5350 | ||
5351 | To cover all cases, Exim sets SIG_IGN with SA_NOCLDWAIT here if it can. If not, | |
5352 | it just sets SIG_IGN. To be on the safe side it also calls waitpid() at the end | |
5353 | of the loop below. Paranoia rules. | |
5354 | ||
5355 | February 2003: That's *still* not the end of the story. There are now versions | |
5356 | of Linux (where SIG_IGN does work) that are picky. If, having set SIG_IGN, a | |
5357 | process then calls waitpid(), a grumble is written to the system log, because | |
5358 | this is logically inconsistent. In other words, it doesn't like the paranoia. | |
4c04137d | 5359 | As a consequence of this, the waitpid() below is now excluded if we are sure |
059ec3d9 PH |
5360 | that SIG_IGN works. */ |
5361 | ||
5362 | if (!synchronous_delivery) | |
5363 | { | |
5364 | #ifdef SA_NOCLDWAIT | |
5365 | struct sigaction act; | |
5366 | act.sa_handler = SIG_IGN; | |
5367 | sigemptyset(&(act.sa_mask)); | |
5368 | act.sa_flags = SA_NOCLDWAIT; | |
5369 | sigaction(SIGCHLD, &act, NULL); | |
5370 | #else | |
5371 | signal(SIGCHLD, SIG_IGN); | |
5372 | #endif | |
5373 | } | |
5374 | ||
5375 | /* Save the current store pool point, for resetting at the start of | |
5376 | each message, and save the real sender address, if any. */ | |
5377 | ||
5378 | reset_point = store_get(0); | |
5379 | real_sender_address = sender_address; | |
5380 | ||
5381 | /* Loop to receive messages; receive_msg() returns TRUE if there are more | |
5382 | messages to be read (SMTP input), or FALSE otherwise (not SMTP, or SMTP channel | |
5383 | collapsed). */ | |
5384 | ||
5385 | while (more) | |
5386 | { | |
059ec3d9 PH |
5387 | message_id[0] = 0; |
5388 | ||
273f34d0 PH |
5389 | /* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP |
5390 | input and build the recipients list, before calling receive_msg() to read the | |
5391 | message proper. Whatever sender address is given in the SMTP transaction is | |
5392 | often ignored for local senders - we use the actual sender, which is normally | |
5393 | either the underlying user running this process or a -f argument provided by | |
5394 | a trusted caller. It is saved in real_sender_address. The test for whether to | |
5395 | accept the SMTP sender is encapsulated in receive_check_set_sender(). */ | |
059ec3d9 PH |
5396 | |
5397 | if (smtp_input) | |
5398 | { | |
5399 | int rc; | |
5400 | if ((rc = smtp_setup_msg()) > 0) | |
5401 | { | |
5402 | if (real_sender_address != NULL && | |
5403 | !receive_check_set_sender(sender_address)) | |
5404 | { | |
5405 | sender_address = raw_sender = real_sender_address; | |
5406 | sender_address_unrewritten = NULL; | |
5407 | } | |
273f34d0 PH |
5408 | |
5409 | /* For batched SMTP, we have to run the acl_not_smtp_start ACL, since it | |
5410 | isn't really SMTP, so no other ACL will run until the acl_not_smtp one at | |
5411 | the very end. The result of the ACL is ignored (as for other non-SMTP | |
5412 | messages). It is run for its potential side effects. */ | |
5413 | ||
5414 | if (smtp_batched_input && acl_not_smtp_start != NULL) | |
5415 | { | |
5416 | uschar *user_msg, *log_msg; | |
5417 | enable_dollar_recipients = TRUE; | |
5418 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, | |
5419 | &user_msg, &log_msg); | |
5420 | enable_dollar_recipients = FALSE; | |
5421 | } | |
5422 | ||
5423 | /* Now get the data for the message */ | |
5424 | ||
059ec3d9 PH |
5425 | more = receive_msg(extract_recipients); |
5426 | if (message_id[0] == 0) | |
5427 | { | |
57cc2785 | 5428 | cancel_cutthrough_connection(TRUE, US"receive dropped"); |
90341c71 | 5429 | if (more) goto moreloop; |
b4ed4da0 | 5430 | smtp_log_no_mail(); /* Log no mail if configured */ |
9bfb7e1b | 5431 | exim_exit(EXIT_FAILURE, US"receive toplevel"); |
059ec3d9 PH |
5432 | } |
5433 | } | |
b4ed4da0 PH |
5434 | else |
5435 | { | |
57cc2785 | 5436 | cancel_cutthrough_connection(TRUE, US"message setup dropped"); |
b4ed4da0 | 5437 | smtp_log_no_mail(); /* Log no mail if configured */ |
9bfb7e1b | 5438 | exim_exit(rc ? EXIT_FAILURE : EXIT_SUCCESS, US"msg setup toplevel"); |
b4ed4da0 | 5439 | } |
059ec3d9 PH |
5440 | } |
5441 | ||
5442 | /* In the non-SMTP case, we have all the information from the command | |
5443 | line, but must process it in case it is in the more general RFC822 | |
5444 | format, and in any case, to detect syntax errors. Also, it appears that | |
5445 | the use of comma-separated lists as single arguments is common, so we | |
5446 | had better support them. */ | |
5447 | ||
5448 | else | |
5449 | { | |
5450 | int i; | |
5451 | int rcount = 0; | |
5452 | int count = argc - recipients_arg; | |
5453 | uschar **list = argv + recipients_arg; | |
eb2c0248 | 5454 | |
69358f02 | 5455 | /* These options cannot be changed dynamically for non-SMTP messages */ |
eb2c0248 | 5456 | |
69358f02 | 5457 | active_local_sender_retain = local_sender_retain; |
eb2c0248 | 5458 | active_local_from_check = local_from_check; |
059ec3d9 PH |
5459 | |
5460 | /* Save before any rewriting */ | |
5461 | ||
5462 | raw_sender = string_copy(sender_address); | |
5463 | ||
5464 | /* Loop for each argument */ | |
5465 | ||
5466 | for (i = 0; i < count; i++) | |
5467 | { | |
5468 | int start, end, domain; | |
5469 | uschar *errmess; | |
5470 | uschar *s = list[i]; | |
5471 | ||
5472 | /* Loop for each comma-separated address */ | |
5473 | ||
5474 | while (*s != 0) | |
5475 | { | |
5476 | BOOL finished = FALSE; | |
5477 | uschar *recipient; | |
5478 | uschar *ss = parse_find_address_end(s, FALSE); | |
5479 | ||
5480 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
5481 | ||
5482 | /* Check max recipients - if -t was used, these aren't recipients */ | |
5483 | ||
5484 | if (recipients_max > 0 && ++rcount > recipients_max && | |
5485 | !extract_recipients) | |
059ec3d9 PH |
5486 | if (error_handling == ERRORS_STDERR) |
5487 | { | |
5488 | fprintf(stderr, "exim: too many recipients\n"); | |
9bfb7e1b | 5489 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
5490 | } |
5491 | else | |
059ec3d9 PH |
5492 | return |
5493 | moan_to_sender(ERRMESS_TOOMANYRECIP, NULL, NULL, stdin, TRUE)? | |
5494 | errors_sender_rc : EXIT_FAILURE; | |
059ec3d9 | 5495 | |
8c5d388a | 5496 | #ifdef SUPPORT_I18N |
250b6871 JH |
5497 | { |
5498 | BOOL b = allow_utf8_domains; | |
5499 | allow_utf8_domains = TRUE; | |
5500 | #endif | |
059ec3d9 PH |
5501 | recipient = |
5502 | parse_extract_address(s, &errmess, &start, &end, &domain, FALSE); | |
5503 | ||
8c5d388a | 5504 | #ifdef SUPPORT_I18N |
250b6871 JH |
5505 | if (string_is_utf8(recipient)) |
5506 | message_smtputf8 = TRUE; | |
5507 | else | |
5508 | allow_utf8_domains = b; | |
5509 | } | |
5510 | #endif | |
059ec3d9 PH |
5511 | if (domain == 0 && !allow_unqualified_recipient) |
5512 | { | |
5513 | recipient = NULL; | |
5514 | errmess = US"unqualified recipient address not allowed"; | |
5515 | } | |
5516 | ||
5517 | if (recipient == NULL) | |
5518 | { | |
5519 | if (error_handling == ERRORS_STDERR) | |
5520 | { | |
5521 | fprintf(stderr, "exim: bad recipient address \"%s\": %s\n", | |
5522 | string_printing(list[i]), errmess); | |
9bfb7e1b | 5523 | exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
5524 | } |
5525 | else | |
5526 | { | |
5527 | error_block eblock; | |
5528 | eblock.next = NULL; | |
5529 | eblock.text1 = string_printing(list[i]); | |
5530 | eblock.text2 = errmess; | |
5531 | return | |
5532 | moan_to_sender(ERRMESS_BADARGADDRESS, &eblock, NULL, stdin, TRUE)? | |
5533 | errors_sender_rc : EXIT_FAILURE; | |
5534 | } | |
5535 | } | |
5536 | ||
5537 | receive_add_recipient(recipient, -1); | |
5538 | s = ss; | |
5539 | if (!finished) | |
5540 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
5541 | } | |
5542 | } | |
5543 | ||
5544 | /* Show the recipients when debugging */ | |
5545 | ||
5546 | DEBUG(D_receive) | |
5547 | { | |
5548 | int i; | |
5549 | if (sender_address != NULL) debug_printf("Sender: %s\n", sender_address); | |
5550 | if (recipients_list != NULL) | |
5551 | { | |
5552 | debug_printf("Recipients:\n"); | |
5553 | for (i = 0; i < recipients_count; i++) | |
5554 | debug_printf(" %s\n", recipients_list[i].address); | |
5555 | } | |
5556 | } | |
5557 | ||
45b91596 PH |
5558 | /* Run the acl_not_smtp_start ACL if required. The result of the ACL is |
5559 | ignored; rejecting here would just add complication, and it can just as | |
5560 | well be done later. Allow $recipients to be visible in the ACL. */ | |
5561 | ||
9cd319d9 | 5562 | if (acl_not_smtp_start) |
45b91596 PH |
5563 | { |
5564 | uschar *user_msg, *log_msg; | |
5565 | enable_dollar_recipients = TRUE; | |
5566 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, | |
5567 | &user_msg, &log_msg); | |
5568 | enable_dollar_recipients = FALSE; | |
5569 | } | |
5570 | ||
9cd319d9 JH |
5571 | /* Pause for a while waiting for input. If none received in that time, |
5572 | close the logfile, if we had one open; then if we wait for a long-running | |
5573 | datasource (months, in one use-case) log rotation will not leave us holding | |
5574 | the file copy. */ | |
5575 | ||
5576 | if (!receive_timeout) | |
5577 | { | |
f2ed27cf | 5578 | struct timeval t = { .tv_sec = 30*60, .tv_usec = 0 }; /* 30 minutes */ |
9cd319d9 JH |
5579 | fd_set r; |
5580 | ||
5581 | FD_ZERO(&r); FD_SET(0, &r); | |
5582 | if (select(1, &r, NULL, NULL, &t) == 0) mainlog_close(); | |
5583 | } | |
5584 | ||
f05da2e8 PH |
5585 | /* Read the data for the message. If filter_test is not FTEST_NONE, this |
5586 | will just read the headers for the message, and not write anything onto the | |
5587 | spool. */ | |
059ec3d9 PH |
5588 | |
5589 | message_ended = END_NOTENDED; | |
5590 | more = receive_msg(extract_recipients); | |
5591 | ||
5592 | /* more is always FALSE here (not SMTP message) when reading a message | |
5593 | for real; when reading the headers of a message for filter testing, | |
5594 | it is TRUE if the headers were terminated by '.' and FALSE otherwise. */ | |
5595 | ||
9bfb7e1b | 5596 | if (message_id[0] == 0) exim_exit(EXIT_FAILURE, US"main"); |
059ec3d9 PH |
5597 | } /* Non-SMTP message reception */ |
5598 | ||
5599 | /* If this is a filter testing run, there are headers in store, but | |
5600 | no message on the spool. Run the filtering code in testing mode, setting | |
5601 | the domain to the qualify domain and the local part to the current user, | |
5602 | unless they have been set by options. The prefix and suffix are left unset | |
5603 | unless specified. The the return path is set to to the sender unless it has | |
5604 | already been set from a return-path header in the message. */ | |
5605 | ||
f05da2e8 | 5606 | if (filter_test != FTEST_NONE) |
059ec3d9 PH |
5607 | { |
5608 | deliver_domain = (ftest_domain != NULL)? | |
5609 | ftest_domain : qualify_domain_recipient; | |
5610 | deliver_domain_orig = deliver_domain; | |
5611 | deliver_localpart = (ftest_localpart != NULL)? | |
5612 | ftest_localpart : originator_login; | |
5613 | deliver_localpart_orig = deliver_localpart; | |
5614 | deliver_localpart_prefix = ftest_prefix; | |
5615 | deliver_localpart_suffix = ftest_suffix; | |
5616 | deliver_home = originator_home; | |
5617 | ||
5618 | if (return_path == NULL) | |
5619 | { | |
5620 | printf("Return-path copied from sender\n"); | |
5621 | return_path = string_copy(sender_address); | |
5622 | } | |
5623 | else | |
059ec3d9 | 5624 | printf("Return-path = %s\n", (return_path[0] == 0)? US"<>" : return_path); |
059ec3d9 PH |
5625 | printf("Sender = %s\n", (sender_address[0] == 0)? US"<>" : sender_address); |
5626 | ||
5627 | receive_add_recipient( | |
5628 | string_sprintf("%s%s%s@%s", | |
5629 | (ftest_prefix == NULL)? US"" : ftest_prefix, | |
5630 | deliver_localpart, | |
5631 | (ftest_suffix == NULL)? US"" : ftest_suffix, | |
5632 | deliver_domain), -1); | |
5633 | ||
5634 | printf("Recipient = %s\n", recipients_list[0].address); | |
5635 | if (ftest_prefix != NULL) printf("Prefix = %s\n", ftest_prefix); | |
5636 | if (ftest_suffix != NULL) printf("Suffix = %s\n", ftest_suffix); | |
5637 | ||
1ac6b2e7 JH |
5638 | if (chdir("/")) /* Get away from wherever the user is running this from */ |
5639 | { | |
5640 | DEBUG(D_receive) debug_printf("chdir(\"/\") failed\n"); | |
9bfb7e1b | 5641 | exim_exit(EXIT_FAILURE, US"main"); |
1ac6b2e7 | 5642 | } |
8e669ac1 PH |
5643 | |
5644 | /* Now we run either a system filter test, or a user filter test, or both. | |
5645 | In the latter case, headers added by the system filter will persist and be | |
5646 | available to the user filter. We need to copy the filter variables | |
f05da2e8 | 5647 | explicitly. */ |
8e669ac1 | 5648 | |
f05da2e8 | 5649 | if ((filter_test & FTEST_SYSTEM) != 0) |
f05da2e8 | 5650 | if (!filter_runtest(filter_sfd, filter_test_sfile, TRUE, more)) |
9bfb7e1b | 5651 | exim_exit(EXIT_FAILURE, US"main"); |
8e669ac1 | 5652 | |
f05da2e8 | 5653 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); |
8e669ac1 | 5654 | |
f05da2e8 | 5655 | if ((filter_test & FTEST_USER) != 0) |
f05da2e8 | 5656 | if (!filter_runtest(filter_ufd, filter_test_ufile, FALSE, more)) |
9bfb7e1b | 5657 | exim_exit(EXIT_FAILURE, US"main"); |
8e669ac1 | 5658 | |
9bfb7e1b | 5659 | exim_exit(EXIT_SUCCESS, US"main"); |
059ec3d9 PH |
5660 | } |
5661 | ||
5662 | /* Else act on the result of message reception. We should not get here unless | |
8669f003 PH |
5663 | message_id[0] is non-zero. If queue_only is set, session_local_queue_only |
5664 | will be TRUE. If it is not, check on the number of messages received in this | |
5665 | connection. */ | |
5666 | ||
5667 | if (!session_local_queue_only && | |
5668 | smtp_accept_queue_per_connection > 0 && | |
5669 | receive_messagecount > smtp_accept_queue_per_connection) | |
059ec3d9 | 5670 | { |
8669f003 PH |
5671 | session_local_queue_only = TRUE; |
5672 | queue_only_reason = 2; | |
5673 | } | |
5674 | ||
5675 | /* Initialize local_queue_only from session_local_queue_only. If it is false, | |
5676 | and queue_only_load is set, check that the load average is below it. If it is | |
5677 | not, set local_queue_only TRUE. If queue_only_load_latch is true (the | |
5678 | default), we put the whole session into queue_only mode. It then remains this | |
5679 | way for any subsequent messages on the same SMTP connection. This is a | |
5680 | deliberate choice; even though the load average may fall, it doesn't seem | |
5681 | right to deliver later messages on the same call when not delivering earlier | |
5682 | ones. However, there are odd cases where this is not wanted, so this can be | |
5683 | changed by setting queue_only_load_latch false. */ | |
5684 | ||
5685 | local_queue_only = session_local_queue_only; | |
5686 | if (!local_queue_only && queue_only_load >= 0) | |
5687 | { | |
5688 | local_queue_only = (load_average = OS_GETLOADAVG()) > queue_only_load; | |
5689 | if (local_queue_only) | |
059ec3d9 | 5690 | { |
8669f003 PH |
5691 | queue_only_reason = 3; |
5692 | if (queue_only_load_latch) session_local_queue_only = TRUE; | |
059ec3d9 PH |
5693 | } |
5694 | } | |
5695 | ||
5696 | /* If running as an MUA wrapper, all queueing options and freezing options | |
5697 | are ignored. */ | |
5698 | ||
5699 | if (mua_wrapper) | |
5700 | local_queue_only = queue_only_policy = deliver_freeze = FALSE; | |
5701 | ||
5702 | /* Log the queueing here, when it will get a message id attached, but | |
5703 | not if queue_only is set (case 0). Case 1 doesn't happen here (too many | |
5704 | connections). */ | |
5705 | ||
57cc2785 | 5706 | if (local_queue_only) |
059ec3d9 | 5707 | { |
57cc2785 JH |
5708 | cancel_cutthrough_connection(TRUE, US"no delivery; queueing"); |
5709 | switch(queue_only_reason) | |
5710 | { | |
5711 | case 2: | |
5712 | log_write(L_delay_delivery, | |
5713 | LOG_MAIN, "no immediate delivery: more than %d messages " | |
5714 | "received in one connection", smtp_accept_queue_per_connection); | |
5715 | break; | |
059ec3d9 | 5716 | |
57cc2785 JH |
5717 | case 3: |
5718 | log_write(L_delay_delivery, | |
5719 | LOG_MAIN, "no immediate delivery: load average %.2f", | |
5720 | (double)load_average/1000.0); | |
5721 | break; | |
5722 | } | |
059ec3d9 PH |
5723 | } |
5724 | ||
57cc2785 JH |
5725 | else if (queue_only_policy || deliver_freeze) |
5726 | cancel_cutthrough_connection(TRUE, US"no delivery; queueing"); | |
5727 | ||
059ec3d9 PH |
5728 | /* Else do the delivery unless the ACL or local_scan() called for queue only |
5729 | or froze the message. Always deliver in a separate process. A fork failure is | |
5730 | not a disaster, as the delivery will eventually happen on a subsequent queue | |
eb2c0248 PH |
5731 | run. The search cache must be tidied before the fork, as the parent will |
5732 | do it before exiting. The child will trigger a lookup failure and | |
5733 | thereby defer the delivery if it tries to use (for example) a cached ldap | |
5734 | connection that the parent has called unbind on. */ | |
059ec3d9 | 5735 | |
57cc2785 | 5736 | else |
059ec3d9 PH |
5737 | { |
5738 | pid_t pid; | |
eb2c0248 PH |
5739 | search_tidyup(); |
5740 | ||
059ec3d9 PH |
5741 | if ((pid = fork()) == 0) |
5742 | { | |
5743 | int rc; | |
5744 | close_unwanted(); /* Close unwanted file descriptors and TLS */ | |
5745 | exim_nullstd(); /* Ensure std{in,out,err} exist */ | |
5746 | ||
5747 | /* Re-exec Exim if we need to regain privilege (note: in mua_wrapper | |
5748 | mode, deliver_drop_privilege is forced TRUE). */ | |
5749 | ||
5750 | if (geteuid() != root_uid && !deliver_drop_privilege && !unprivileged) | |
5751 | { | |
57cc2785 | 5752 | delivery_re_exec(CEE_EXEC_EXIT); |
059ec3d9 PH |
5753 | /* Control does not return here. */ |
5754 | } | |
5755 | ||
5756 | /* No need to re-exec */ | |
5757 | ||
5758 | rc = deliver_message(message_id, FALSE, FALSE); | |
5759 | search_tidyup(); | |
5760 | _exit((!mua_wrapper || rc == DELIVER_MUA_SUCCEEDED)? | |
5761 | EXIT_SUCCESS : EXIT_FAILURE); | |
5762 | } | |
5763 | ||
5764 | if (pid < 0) | |
5765 | { | |
57cc2785 | 5766 | cancel_cutthrough_connection(TRUE, US"delivery fork failed"); |
059ec3d9 PH |
5767 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fork automatic delivery " |
5768 | "process: %s", strerror(errno)); | |
5769 | } | |
57cc2785 JH |
5770 | else |
5771 | { | |
5772 | release_cutthrough_connection(US"msg passed for delivery"); | |
059ec3d9 | 5773 | |
57cc2785 JH |
5774 | /* In the parent, wait if synchronous delivery is required. This will |
5775 | always be the case in MUA wrapper mode. */ | |
059ec3d9 | 5776 | |
57cc2785 JH |
5777 | if (synchronous_delivery) |
5778 | { | |
5779 | int status; | |
5780 | while (wait(&status) != pid); | |
5781 | if ((status & 0x00ff) != 0) | |
5782 | log_write(0, LOG_MAIN|LOG_PANIC, | |
5783 | "process %d crashed with signal %d while delivering %s", | |
5784 | (int)pid, status & 0x00ff, message_id); | |
9bfb7e1b | 5785 | if (mua_wrapper && (status & 0xffff) != 0) exim_exit(EXIT_FAILURE, US"main"); |
57cc2785 | 5786 | } |
059ec3d9 PH |
5787 | } |
5788 | } | |
5789 | ||
5790 | /* The loop will repeat if more is TRUE. If we do not know know that the OS | |
5791 | automatically reaps children (see comments above the loop), clear away any | |
5792 | finished subprocesses here, in case there are lots of messages coming in | |
5793 | from the same source. */ | |
5794 | ||
5795 | #ifndef SIG_IGN_WORKS | |
5796 | while (waitpid(-1, NULL, WNOHANG) > 0); | |
5797 | #endif | |
90341c71 JH |
5798 | |
5799 | moreloop: | |
5800 | return_path = sender_address = NULL; | |
5801 | authenticated_sender = NULL; | |
5802 | deliver_localpart_orig = NULL; | |
5803 | deliver_domain_orig = NULL; | |
5804 | deliver_host = deliver_host_address = NULL; | |
5805 | dnslist_domain = dnslist_matched = NULL; | |
ac4824af | 5806 | #ifdef WITH_CONTENT_SCAN |
90341c71 | 5807 | malware_name = NULL; |
ac4824af | 5808 | #endif |
90341c71 JH |
5809 | callout_address = NULL; |
5810 | sending_ip_address = NULL; | |
5811 | acl_var_m = NULL; | |
5812 | { int i; for(i=0; i<REGEX_VARS; i++) regex_vars[i] = NULL; } | |
5813 | ||
5814 | store_reset(reset_point); | |
059ec3d9 PH |
5815 | } |
5816 | ||
9bfb7e1b | 5817 | exim_exit(EXIT_SUCCESS, US"main"); /* Never returns */ |
059ec3d9 PH |
5818 | return 0; /* To stop compiler warning */ |
5819 | } | |
5820 | ||
2cee425a | 5821 | |
059ec3d9 | 5822 | /* End of exim.c */ |