Commit | Line | Data |
---|---|---|
059ec3d9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
3386088d | 5 | /* Copyright (c) University of Cambridge 1995 - 2015 */ |
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 | ||
f797c123 JH |
15 | #ifdef USE_GNUTLS |
16 | # include <gnutls/gnutls.h> | |
17 | # if GNUTLS_VERSION_NUMBER < 0x030103 && !defined(DISABLE_OCSP) | |
18 | # define DISABLE_OCSP | |
19 | # endif | |
20 | #endif | |
21 | ||
6545de78 PP |
22 | extern void init_lookup_list(void); |
23 | ||
059ec3d9 PH |
24 | |
25 | ||
26 | /************************************************* | |
27 | * Function interface to store functions * | |
28 | *************************************************/ | |
29 | ||
30 | /* We need some real functions to pass to the PCRE regular expression library | |
31 | for store allocation via Exim's store manager. The normal calls are actually | |
32 | macros that pass over location information to make tracing easier. These | |
33 | functions just interface to the standard macro calls. A good compiler will | |
34 | optimize out the tail recursion and so not make them too expensive. There | |
35 | are two sets of functions; one for use when we want to retain the compiled | |
36 | regular expression for a long time; the other for short-term use. */ | |
37 | ||
38 | static void * | |
39 | function_store_get(size_t size) | |
40 | { | |
41 | return store_get((int)size); | |
42 | } | |
43 | ||
44 | static void | |
45 | function_dummy_free(void *block) { block = block; } | |
46 | ||
47 | static void * | |
48 | function_store_malloc(size_t size) | |
49 | { | |
50 | return store_malloc((int)size); | |
51 | } | |
52 | ||
53 | static void | |
54 | function_store_free(void *block) | |
55 | { | |
56 | store_free(block); | |
57 | } | |
58 | ||
59 | ||
60 | ||
61 | ||
98a90c36 PP |
62 | /************************************************* |
63 | * Enums for cmdline interface * | |
64 | *************************************************/ | |
65 | ||
66 | enum commandline_info { CMDINFO_NONE=0, | |
36a3ae5f | 67 | CMDINFO_HELP, CMDINFO_SIEVE, CMDINFO_DSCP }; |
98a90c36 PP |
68 | |
69 | ||
70 | ||
71 | ||
059ec3d9 PH |
72 | /************************************************* |
73 | * Compile regular expression and panic on fail * | |
74 | *************************************************/ | |
75 | ||
76 | /* This function is called when failure to compile a regular expression leads | |
77 | to a panic exit. In other cases, pcre_compile() is called directly. In many | |
78 | cases where this function is used, the results of the compilation are to be | |
79 | placed in long-lived store, so we temporarily reset the store management | |
80 | functions that PCRE uses if the use_malloc flag is set. | |
81 | ||
82 | Argument: | |
83 | pattern the pattern to compile | |
84 | caseless TRUE if caseless matching is required | |
85 | use_malloc TRUE if compile into malloc store | |
86 | ||
87 | Returns: pointer to the compiled pattern | |
88 | */ | |
89 | ||
90 | const pcre * | |
476be7e2 | 91 | regex_must_compile(const uschar *pattern, BOOL caseless, BOOL use_malloc) |
059ec3d9 PH |
92 | { |
93 | int offset; | |
94 | int options = PCRE_COPT; | |
95 | const pcre *yield; | |
96 | const uschar *error; | |
97 | if (use_malloc) | |
98 | { | |
99 | pcre_malloc = function_store_malloc; | |
100 | pcre_free = function_store_free; | |
101 | } | |
102 | if (caseless) options |= PCRE_CASELESS; | |
476be7e2 | 103 | yield = pcre_compile(CCS pattern, options, (const char **)&error, &offset, NULL); |
059ec3d9 PH |
104 | pcre_malloc = function_store_get; |
105 | pcre_free = function_dummy_free; | |
106 | if (yield == NULL) | |
107 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "regular expression error: " | |
108 | "%s at offset %d while compiling %s", error, offset, pattern); | |
109 | return yield; | |
110 | } | |
111 | ||
112 | ||
113 | ||
114 | ||
115 | /************************************************* | |
116 | * Execute regular expression and set strings * | |
117 | *************************************************/ | |
118 | ||
119 | /* This function runs a regular expression match, and sets up the pointers to | |
120 | the matched substrings. | |
121 | ||
122 | Arguments: | |
123 | re the compiled expression | |
124 | subject the subject string | |
125 | options additional PCRE options | |
126 | setup if < 0 do full setup | |
127 | if >= 0 setup from setup+1 onwards, | |
128 | excluding the full matched string | |
129 | ||
130 | Returns: TRUE or FALSE | |
131 | */ | |
132 | ||
133 | BOOL | |
1dc92d5a | 134 | regex_match_and_setup(const pcre *re, const uschar *subject, int options, int setup) |
059ec3d9 PH |
135 | { |
136 | int ovector[3*(EXPAND_MAXN+1)]; | |
1dc92d5a JH |
137 | uschar * s = string_copy(subject); /* de-constifying */ |
138 | int n = pcre_exec(re, NULL, CS s, Ustrlen(s), 0, | |
059ec3d9 PH |
139 | PCRE_EOPT | options, ovector, sizeof(ovector)/sizeof(int)); |
140 | BOOL yield = n >= 0; | |
141 | if (n == 0) n = EXPAND_MAXN + 1; | |
142 | if (yield) | |
143 | { | |
144 | int nn; | |
145 | expand_nmax = (setup < 0)? 0 : setup + 1; | |
146 | for (nn = (setup < 0)? 0 : 2; nn < n*2; nn += 2) | |
147 | { | |
1dc92d5a | 148 | expand_nstring[expand_nmax] = s + ovector[nn]; |
059ec3d9 PH |
149 | expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn]; |
150 | } | |
151 | expand_nmax--; | |
152 | } | |
153 | return yield; | |
154 | } | |
155 | ||
156 | ||
157 | ||
158 | ||
921b12ca TF |
159 | /************************************************* |
160 | * Set up processing details * | |
161 | *************************************************/ | |
162 | ||
163 | /* Save a text string for dumping when SIGUSR1 is received. | |
164 | Do checks for overruns. | |
165 | ||
166 | Arguments: format and arguments, as for printf() | |
167 | Returns: nothing | |
168 | */ | |
169 | ||
170 | void | |
171 | set_process_info(const char *format, ...) | |
172 | { | |
173 | int len; | |
174 | va_list ap; | |
175 | sprintf(CS process_info, "%5d ", (int)getpid()); | |
176 | len = Ustrlen(process_info); | |
177 | va_start(ap, format); | |
178 | if (!string_vformat(process_info + len, PROCESS_INFO_SIZE - len - 2, format, ap)) | |
179 | Ustrcpy(process_info + len, "**** string overflowed buffer ****"); | |
180 | len = Ustrlen(process_info); | |
181 | process_info[len+0] = '\n'; | |
182 | process_info[len+1] = '\0'; | |
183 | process_info_len = len + 1; | |
184 | DEBUG(D_process_info) debug_printf("set_process_info: %s", process_info); | |
185 | va_end(ap); | |
186 | } | |
187 | ||
188 | ||
189 | ||
190 | ||
059ec3d9 PH |
191 | /************************************************* |
192 | * Handler for SIGUSR1 * | |
193 | *************************************************/ | |
194 | ||
195 | /* SIGUSR1 causes any exim process to write to the process log details of | |
196 | what it is currently doing. It will only be used if the OS is capable of | |
197 | setting up a handler that causes automatic restarting of any system call | |
198 | that is in progress at the time. | |
199 | ||
921b12ca TF |
200 | This function takes care to be signal-safe. |
201 | ||
059ec3d9 PH |
202 | Argument: the signal number (SIGUSR1) |
203 | Returns: nothing | |
204 | */ | |
205 | ||
206 | static void | |
207 | usr1_handler(int sig) | |
208 | { | |
921b12ca TF |
209 | int fd; |
210 | ||
211 | os_restarting_signal(sig, usr1_handler); | |
212 | ||
213 | fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE); | |
214 | if (fd < 0) | |
215 | { | |
216 | /* If we are already running as the Exim user, try to create it in the | |
217 | current process (assuming spool_directory exists). Otherwise, if we are | |
218 | root, do the creation in an exim:exim subprocess. */ | |
219 | ||
220 | int euid = geteuid(); | |
221 | if (euid == exim_uid) | |
222 | fd = Uopen(process_log_path, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE); | |
223 | else if (euid == root_uid) | |
224 | fd = log_create_as_exim(process_log_path); | |
225 | } | |
226 | ||
227 | /* If we are neither exim nor root, or if we failed to create the log file, | |
228 | give up. There is not much useful we can do with errors, since we don't want | |
229 | to disrupt whatever is going on outside the signal handler. */ | |
230 | ||
231 | if (fd < 0) return; | |
232 | ||
2f21487f | 233 | (void)write(fd, process_info, process_info_len); |
921b12ca | 234 | (void)close(fd); |
059ec3d9 PH |
235 | } |
236 | ||
237 | ||
238 | ||
239 | /************************************************* | |
240 | * Timeout handler * | |
241 | *************************************************/ | |
242 | ||
243 | /* This handler is enabled most of the time that Exim is running. The handler | |
244 | doesn't actually get used unless alarm() has been called to set a timer, to | |
245 | place a time limit on a system call of some kind. When the handler is run, it | |
246 | re-enables itself. | |
247 | ||
248 | There are some other SIGALRM handlers that are used in special cases when more | |
249 | than just a flag setting is required; for example, when reading a message's | |
250 | input. These are normally set up in the code module that uses them, and the | |
251 | SIGALRM handler is reset to this one afterwards. | |
252 | ||
253 | Argument: the signal value (SIGALRM) | |
254 | Returns: nothing | |
255 | */ | |
256 | ||
257 | void | |
258 | sigalrm_handler(int sig) | |
259 | { | |
260 | sig = sig; /* Keep picky compilers happy */ | |
261 | sigalrm_seen = TRUE; | |
262 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
263 | } | |
264 | ||
265 | ||
266 | ||
267 | /************************************************* | |
268 | * Sleep for a fractional time interval * | |
269 | *************************************************/ | |
270 | ||
271 | /* This function is called by millisleep() and exim_wait_tick() to wait for a | |
272 | period of time that may include a fraction of a second. The coding is somewhat | |
eb2c0248 PH |
273 | tedious. We do not expect setitimer() ever to fail, but if it does, the process |
274 | will wait for ever, so we panic in this instance. (There was a case of this | |
275 | when a bug in a function that calls milliwait() caused it to pass invalid data. | |
7086e875 | 276 | That's when I added the check. :-) |
059ec3d9 | 277 | |
0f8ba377 JH |
278 | We assume it to be not worth sleeping for under 100us; this value will |
279 | require revisiting as hardware advances. This avoids the issue of | |
280 | a zero-valued timer setting meaning "never fire". | |
281 | ||
059ec3d9 PH |
282 | Argument: an itimerval structure containing the interval |
283 | Returns: nothing | |
284 | */ | |
285 | ||
286 | static void | |
287 | milliwait(struct itimerval *itval) | |
288 | { | |
289 | sigset_t sigmask; | |
290 | sigset_t old_sigmask; | |
0f8ba377 JH |
291 | |
292 | if (itval->it_value.tv_usec < 100 && itval->it_value.tv_sec == 0) | |
293 | return; | |
059ec3d9 PH |
294 | (void)sigemptyset(&sigmask); /* Empty mask */ |
295 | (void)sigaddset(&sigmask, SIGALRM); /* Add SIGALRM */ | |
296 | (void)sigprocmask(SIG_BLOCK, &sigmask, &old_sigmask); /* Block SIGALRM */ | |
7086e875 | 297 | if (setitimer(ITIMER_REAL, itval, NULL) < 0) /* Start timer */ |
eb2c0248 PH |
298 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, |
299 | "setitimer() failed: %s", strerror(errno)); | |
059ec3d9 PH |
300 | (void)sigfillset(&sigmask); /* All signals */ |
301 | (void)sigdelset(&sigmask, SIGALRM); /* Remove SIGALRM */ | |
302 | (void)sigsuspend(&sigmask); /* Until SIGALRM */ | |
303 | (void)sigprocmask(SIG_SETMASK, &old_sigmask, NULL); /* Restore mask */ | |
304 | } | |
305 | ||
306 | ||
307 | ||
308 | ||
309 | /************************************************* | |
310 | * Millisecond sleep function * | |
311 | *************************************************/ | |
312 | ||
313 | /* The basic sleep() function has a granularity of 1 second, which is too rough | |
314 | in some cases - for example, when using an increasing delay to slow down | |
315 | spammers. | |
316 | ||
317 | Argument: number of millseconds | |
318 | Returns: nothing | |
319 | */ | |
320 | ||
321 | void | |
322 | millisleep(int msec) | |
323 | { | |
324 | struct itimerval itval; | |
325 | itval.it_interval.tv_sec = 0; | |
326 | itval.it_interval.tv_usec = 0; | |
327 | itval.it_value.tv_sec = msec/1000; | |
328 | itval.it_value.tv_usec = (msec % 1000) * 1000; | |
329 | milliwait(&itval); | |
330 | } | |
331 | ||
332 | ||
333 | ||
334 | /************************************************* | |
335 | * Compare microsecond times * | |
336 | *************************************************/ | |
337 | ||
338 | /* | |
339 | Arguments: | |
340 | tv1 the first time | |
341 | tv2 the second time | |
342 | ||
343 | Returns: -1, 0, or +1 | |
344 | */ | |
345 | ||
346 | int | |
347 | exim_tvcmp(struct timeval *t1, struct timeval *t2) | |
348 | { | |
349 | if (t1->tv_sec > t2->tv_sec) return +1; | |
350 | if (t1->tv_sec < t2->tv_sec) return -1; | |
351 | if (t1->tv_usec > t2->tv_usec) return +1; | |
352 | if (t1->tv_usec < t2->tv_usec) return -1; | |
353 | return 0; | |
354 | } | |
355 | ||
356 | ||
357 | ||
358 | ||
359 | /************************************************* | |
360 | * Clock tick wait function * | |
361 | *************************************************/ | |
362 | ||
363 | /* Exim uses a time + a pid to generate a unique identifier in two places: its | |
364 | message IDs, and in file names for maildir deliveries. Because some OS now | |
365 | re-use pids within the same second, sub-second times are now being used. | |
366 | However, for absolute certaintly, we must ensure the clock has ticked before | |
367 | allowing the relevant process to complete. At the time of implementation of | |
368 | this code (February 2003), the speed of processors is such that the clock will | |
369 | invariably have ticked already by the time a process has done its job. This | |
370 | function prepares for the time when things are faster - and it also copes with | |
371 | clocks that go backwards. | |
372 | ||
373 | Arguments: | |
374 | then_tv A timeval which was used to create uniqueness; its usec field | |
375 | has been rounded down to the value of the resolution. | |
376 | We want to be sure the current time is greater than this. | |
377 | resolution The resolution that was used to divide the microseconds | |
378 | (1 for maildir, larger for message ids) | |
379 | ||
380 | Returns: nothing | |
381 | */ | |
382 | ||
383 | void | |
384 | exim_wait_tick(struct timeval *then_tv, int resolution) | |
385 | { | |
386 | struct timeval now_tv; | |
387 | long int now_true_usec; | |
388 | ||
389 | (void)gettimeofday(&now_tv, NULL); | |
390 | now_true_usec = now_tv.tv_usec; | |
391 | now_tv.tv_usec = (now_true_usec/resolution) * resolution; | |
392 | ||
393 | if (exim_tvcmp(&now_tv, then_tv) <= 0) | |
394 | { | |
395 | struct itimerval itval; | |
396 | itval.it_interval.tv_sec = 0; | |
397 | itval.it_interval.tv_usec = 0; | |
398 | itval.it_value.tv_sec = then_tv->tv_sec - now_tv.tv_sec; | |
399 | itval.it_value.tv_usec = then_tv->tv_usec + resolution - now_true_usec; | |
400 | ||
401 | /* We know that, overall, "now" is less than or equal to "then". Therefore, a | |
402 | negative value for the microseconds is possible only in the case when "now" | |
403 | is more than a second less than "then". That means that itval.it_value.tv_sec | |
404 | is greater than zero. The following correction is therefore safe. */ | |
405 | ||
406 | if (itval.it_value.tv_usec < 0) | |
407 | { | |
408 | itval.it_value.tv_usec += 1000000; | |
409 | itval.it_value.tv_sec -= 1; | |
410 | } | |
411 | ||
412 | DEBUG(D_transport|D_receive) | |
413 | { | |
414 | if (!running_in_test_harness) | |
415 | { | |
d0291a0a | 416 | debug_printf("tick check: " TIME_T_FMT ".%06lu " TIME_T_FMT ".%06lu\n", |
7437665e JH |
417 | then_tv->tv_sec, (long) then_tv->tv_usec, |
418 | now_tv.tv_sec, (long) now_tv.tv_usec); | |
d0291a0a JH |
419 | debug_printf("waiting " TIME_T_FMT ".%06lu\n", |
420 | itval.it_value.tv_sec, (long) itval.it_value.tv_usec); | |
059ec3d9 PH |
421 | } |
422 | } | |
423 | ||
424 | milliwait(&itval); | |
425 | } | |
426 | } | |
427 | ||
428 | ||
429 | ||
430 | ||
2632889e PH |
431 | /************************************************* |
432 | * Call fopen() with umask 777 and adjust mode * | |
433 | *************************************************/ | |
434 | ||
435 | /* Exim runs with umask(0) so that files created with open() have the mode that | |
436 | is specified in the open() call. However, there are some files, typically in | |
437 | the spool directory, that are created with fopen(). They end up world-writeable | |
438 | if no precautions are taken. Although the spool directory is not accessible to | |
439 | the world, this is an untidiness. So this is a wrapper function for fopen() | |
440 | that sorts out the mode of the created file. | |
441 | ||
442 | Arguments: | |
443 | filename the file name | |
444 | options the fopen() options | |
445 | mode the required mode | |
446 | ||
447 | Returns: the fopened FILE or NULL | |
448 | */ | |
449 | ||
450 | FILE * | |
1ba28e2b | 451 | modefopen(const uschar *filename, const char *options, mode_t mode) |
2632889e | 452 | { |
67d175de PH |
453 | mode_t saved_umask = umask(0777); |
454 | FILE *f = Ufopen(filename, options); | |
455 | (void)umask(saved_umask); | |
2632889e PH |
456 | if (f != NULL) (void)fchmod(fileno(f), mode); |
457 | return f; | |
458 | } | |
459 | ||
460 | ||
461 | ||
462 | ||
059ec3d9 PH |
463 | /************************************************* |
464 | * Ensure stdin, stdout, and stderr exist * | |
465 | *************************************************/ | |
466 | ||
467 | /* Some operating systems grumble if an exec() happens without a standard | |
468 | input, output, and error (fds 0, 1, 2) being defined. The worry is that some | |
469 | file will be opened and will use these fd values, and then some other bit of | |
470 | code will assume, for example, that it can write error messages to stderr. | |
471 | This function ensures that fds 0, 1, and 2 are open if they do not already | |
472 | exist, by connecting them to /dev/null. | |
473 | ||
474 | This function is also used to ensure that std{in,out,err} exist at all times, | |
475 | so that if any library that Exim calls tries to use them, it doesn't crash. | |
476 | ||
477 | Arguments: None | |
478 | Returns: Nothing | |
479 | */ | |
480 | ||
481 | void | |
482 | exim_nullstd(void) | |
483 | { | |
484 | int i; | |
485 | int devnull = -1; | |
486 | struct stat statbuf; | |
487 | for (i = 0; i <= 2; i++) | |
488 | { | |
489 | if (fstat(i, &statbuf) < 0 && errno == EBADF) | |
490 | { | |
491 | if (devnull < 0) devnull = open("/dev/null", O_RDWR); | |
492 | if (devnull < 0) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s", | |
493 | string_open_failed(errno, "/dev/null")); | |
1fe64dcc | 494 | if (devnull != i) (void)dup2(devnull, i); |
059ec3d9 PH |
495 | } |
496 | } | |
1fe64dcc | 497 | if (devnull > 2) (void)close(devnull); |
059ec3d9 PH |
498 | } |
499 | ||
500 | ||
501 | ||
502 | ||
503 | /************************************************* | |
504 | * Close unwanted file descriptors for delivery * | |
505 | *************************************************/ | |
506 | ||
507 | /* This function is called from a new process that has been forked to deliver | |
508 | an incoming message, either directly, or using exec. | |
509 | ||
510 | We want any smtp input streams to be closed in this new process. However, it | |
511 | has been observed that using fclose() here causes trouble. When reading in -bS | |
512 | input, duplicate copies of messages have been seen. The files will be sharing a | |
513 | file pointer with the parent process, and it seems that fclose() (at least on | |
514 | some systems - I saw this on Solaris 2.5.1) messes with that file pointer, at | |
515 | least sometimes. Hence we go for closing the underlying file descriptors. | |
516 | ||
517 | If TLS is active, we want to shut down the TLS library, but without molesting | |
518 | the parent's SSL connection. | |
519 | ||
520 | For delivery of a non-SMTP message, we want to close stdin and stdout (and | |
521 | stderr unless debugging) because the calling process might have set them up as | |
522 | pipes and be waiting for them to close before it waits for the submission | |
523 | process to terminate. If they aren't closed, they hold up the calling process | |
524 | until the initial delivery process finishes, which is not what we want. | |
525 | ||
526 | Exception: We do want it for synchronous delivery! | |
527 | ||
528 | And notwithstanding all the above, if D_resolver is set, implying resolver | |
529 | debugging, leave stdout open, because that's where the resolver writes its | |
530 | debugging output. | |
531 | ||
532 | When we close stderr (which implies we've also closed stdout), we also get rid | |
533 | of any controlling terminal. | |
534 | ||
535 | Arguments: None | |
536 | Returns: Nothing | |
537 | */ | |
538 | ||
539 | static void | |
540 | close_unwanted(void) | |
541 | { | |
542 | if (smtp_input) | |
543 | { | |
544 | #ifdef SUPPORT_TLS | |
a400eccf | 545 | tls_close(TRUE, FALSE); /* Shut down the TLS library */ |
059ec3d9 | 546 | #endif |
1fe64dcc PH |
547 | (void)close(fileno(smtp_in)); |
548 | (void)close(fileno(smtp_out)); | |
059ec3d9 PH |
549 | smtp_in = NULL; |
550 | } | |
551 | else | |
552 | { | |
1fe64dcc PH |
553 | (void)close(0); /* stdin */ |
554 | if ((debug_selector & D_resolver) == 0) (void)close(1); /* stdout */ | |
555 | if (debug_selector == 0) /* stderr */ | |
059ec3d9 PH |
556 | { |
557 | if (!synchronous_delivery) | |
558 | { | |
1fe64dcc | 559 | (void)close(2); |
059ec3d9 PH |
560 | log_stderr = NULL; |
561 | } | |
562 | (void)setsid(); | |
563 | } | |
564 | } | |
565 | } | |
566 | ||
567 | ||
568 | ||
569 | ||
570 | /************************************************* | |
571 | * Set uid and gid * | |
572 | *************************************************/ | |
573 | ||
574 | /* This function sets a new uid and gid permanently, optionally calling | |
575 | initgroups() to set auxiliary groups. There are some special cases when running | |
576 | Exim in unprivileged modes. In these situations the effective uid will not be | |
577 | root; if we already have the right effective uid/gid, and don't need to | |
578 | initialize any groups, leave things as they are. | |
579 | ||
580 | Arguments: | |
581 | uid the uid | |
582 | gid the gid | |
583 | igflag TRUE if initgroups() wanted | |
584 | msg text to use in debugging output and failure log | |
585 | ||
586 | Returns: nothing; bombs out on failure | |
587 | */ | |
588 | ||
589 | void | |
590 | exim_setugid(uid_t uid, gid_t gid, BOOL igflag, uschar *msg) | |
591 | { | |
592 | uid_t euid = geteuid(); | |
593 | gid_t egid = getegid(); | |
594 | ||
595 | if (euid == root_uid || euid != uid || egid != gid || igflag) | |
596 | { | |
597 | /* At least one OS returns +1 for initgroups failure, so just check for | |
598 | non-zero. */ | |
599 | ||
600 | if (igflag) | |
601 | { | |
602 | struct passwd *pw = getpwuid(uid); | |
603 | if (pw != NULL) | |
604 | { | |
605 | if (initgroups(pw->pw_name, gid) != 0) | |
606 | log_write(0,LOG_MAIN|LOG_PANIC_DIE,"initgroups failed for uid=%ld: %s", | |
607 | (long int)uid, strerror(errno)); | |
608 | } | |
609 | else log_write(0, LOG_MAIN|LOG_PANIC_DIE, "cannot run initgroups(): " | |
610 | "no passwd entry for uid=%ld", (long int)uid); | |
611 | } | |
612 | ||
613 | if (setgid(gid) < 0 || setuid(uid) < 0) | |
614 | { | |
615 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "unable to set gid=%ld or uid=%ld " | |
616 | "(euid=%ld): %s", (long int)gid, (long int)uid, (long int)euid, msg); | |
617 | } | |
618 | } | |
619 | ||
620 | /* Debugging output included uid/gid and all groups */ | |
621 | ||
622 | DEBUG(D_uid) | |
623 | { | |
cd59ab18 | 624 | int group_count, save_errno; |
059ec3d9 PH |
625 | gid_t group_list[NGROUPS_MAX]; |
626 | debug_printf("changed uid/gid: %s\n uid=%ld gid=%ld pid=%ld\n", msg, | |
627 | (long int)geteuid(), (long int)getegid(), (long int)getpid()); | |
628 | group_count = getgroups(NGROUPS_MAX, group_list); | |
cd59ab18 | 629 | save_errno = errno; |
059ec3d9 PH |
630 | debug_printf(" auxiliary group list:"); |
631 | if (group_count > 0) | |
632 | { | |
633 | int i; | |
634 | for (i = 0; i < group_count; i++) debug_printf(" %d", (int)group_list[i]); | |
635 | } | |
cd59ab18 PP |
636 | else if (group_count < 0) |
637 | debug_printf(" <error: %s>", strerror(save_errno)); | |
059ec3d9 PH |
638 | else debug_printf(" <none>"); |
639 | debug_printf("\n"); | |
640 | } | |
641 | } | |
642 | ||
643 | ||
644 | ||
645 | ||
646 | /************************************************* | |
647 | * Exit point * | |
648 | *************************************************/ | |
649 | ||
650 | /* Exim exits via this function so that it always clears up any open | |
651 | databases. | |
652 | ||
653 | Arguments: | |
654 | rc return code | |
655 | ||
656 | Returns: does not return | |
657 | */ | |
658 | ||
659 | void | |
660 | exim_exit(int rc) | |
661 | { | |
662 | search_tidyup(); | |
663 | DEBUG(D_any) | |
664 | debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d terminating with rc=%d " | |
665 | ">>>>>>>>>>>>>>>>\n", (int)getpid(), rc); | |
666 | exit(rc); | |
667 | } | |
668 | ||
669 | ||
670 | ||
671 | ||
672 | /************************************************* | |
673 | * Extract port from host address * | |
674 | *************************************************/ | |
675 | ||
676 | /* Called to extract the port from the values given to -oMa and -oMi. | |
b90c388a PH |
677 | It also checks the syntax of the address, and terminates it before the |
678 | port data when a port is extracted. | |
059ec3d9 PH |
679 | |
680 | Argument: | |
681 | address the address, with possible port on the end | |
682 | ||
683 | Returns: the port, or zero if there isn't one | |
684 | bombs out on a syntax error | |
685 | */ | |
686 | ||
687 | static int | |
688 | check_port(uschar *address) | |
689 | { | |
7cd1141b | 690 | int port = host_address_extract_port(address); |
8e669ac1 | 691 | if (string_is_ip_address(address, NULL) == 0) |
059ec3d9 PH |
692 | { |
693 | fprintf(stderr, "exim abandoned: \"%s\" is not an IP address\n", address); | |
694 | exit(EXIT_FAILURE); | |
695 | } | |
696 | return port; | |
697 | } | |
698 | ||
699 | ||
700 | ||
701 | /************************************************* | |
702 | * Test/verify an address * | |
703 | *************************************************/ | |
704 | ||
705 | /* This function is called by the -bv and -bt code. It extracts a working | |
706 | address from a full RFC 822 address. This isn't really necessary per se, but it | |
707 | has the effect of collapsing source routes. | |
708 | ||
709 | Arguments: | |
710 | s the address string | |
711 | flags flag bits for verify_address() | |
712 | exit_value to be set for failures | |
713 | ||
a5a28604 | 714 | Returns: nothing |
059ec3d9 PH |
715 | */ |
716 | ||
717 | static void | |
718 | test_address(uschar *s, int flags, int *exit_value) | |
719 | { | |
720 | int start, end, domain; | |
721 | uschar *parse_error = NULL; | |
722 | uschar *address = parse_extract_address(s, &parse_error, &start, &end, &domain, | |
723 | FALSE); | |
724 | if (address == NULL) | |
725 | { | |
726 | fprintf(stdout, "syntax error: %s\n", parse_error); | |
727 | *exit_value = 2; | |
728 | } | |
729 | else | |
730 | { | |
731 | int rc = verify_address(deliver_make_addr(address,TRUE), stdout, flags, -1, | |
4deaf07d | 732 | -1, -1, NULL, NULL, NULL); |
059ec3d9 PH |
733 | if (rc == FAIL) *exit_value = 2; |
734 | else if (rc == DEFER && *exit_value == 0) *exit_value = 1; | |
735 | } | |
736 | } | |
737 | ||
738 | ||
739 | ||
059ec3d9 PH |
740 | /************************************************* |
741 | * Show supported features * | |
742 | *************************************************/ | |
743 | ||
4b2241d2 PP |
744 | /* This function is called for -bV/--version and for -d to output the optional |
745 | features of the current Exim binary. | |
059ec3d9 PH |
746 | |
747 | Arguments: a FILE for printing | |
748 | Returns: nothing | |
749 | */ | |
750 | ||
751 | static void | |
752 | show_whats_supported(FILE *f) | |
753 | { | |
44bbabb5 PP |
754 | auth_info *authi; |
755 | ||
059ec3d9 PH |
756 | #ifdef DB_VERSION_STRING |
757 | fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING); | |
758 | #elif defined(BTREEVERSION) && defined(HASHVERSION) | |
759 | #ifdef USE_DB | |
760 | fprintf(f, "Probably Berkeley DB version 1.8x (native mode)\n"); | |
761 | #else | |
762 | fprintf(f, "Probably Berkeley DB version 1.8x (compatibility mode)\n"); | |
763 | #endif | |
764 | #elif defined(_DBM_RDONLY) || defined(dbm_dirfno) | |
765 | fprintf(f, "Probably ndbm\n"); | |
766 | #elif defined(USE_TDB) | |
767 | fprintf(f, "Using tdb\n"); | |
768 | #else | |
769 | #ifdef USE_GDBM | |
770 | fprintf(f, "Probably GDBM (native mode)\n"); | |
771 | #else | |
772 | fprintf(f, "Probably GDBM (compatibility mode)\n"); | |
773 | #endif | |
774 | #endif | |
775 | ||
776 | fprintf(f, "Support for:"); | |
9cec981f PH |
777 | #ifdef SUPPORT_CRYPTEQ |
778 | fprintf(f, " crypteq"); | |
779 | #endif | |
059ec3d9 PH |
780 | #if HAVE_ICONV |
781 | fprintf(f, " iconv()"); | |
782 | #endif | |
783 | #if HAVE_IPV6 | |
784 | fprintf(f, " IPv6"); | |
785 | #endif | |
79378e0f PH |
786 | #ifdef HAVE_SETCLASSRESOURCES |
787 | fprintf(f, " use_setclassresources"); | |
929ba01c | 788 | #endif |
059ec3d9 PH |
789 | #ifdef SUPPORT_PAM |
790 | fprintf(f, " PAM"); | |
791 | #endif | |
792 | #ifdef EXIM_PERL | |
793 | fprintf(f, " Perl"); | |
794 | #endif | |
1a46a8c5 PH |
795 | #ifdef EXPAND_DLFUNC |
796 | fprintf(f, " Expand_dlfunc"); | |
797 | #endif | |
059ec3d9 PH |
798 | #ifdef USE_TCP_WRAPPERS |
799 | fprintf(f, " TCPwrappers"); | |
800 | #endif | |
801 | #ifdef SUPPORT_TLS | |
802 | #ifdef USE_GNUTLS | |
803 | fprintf(f, " GnuTLS"); | |
804 | #else | |
805 | fprintf(f, " OpenSSL"); | |
806 | #endif | |
807 | #endif | |
b2f5a032 PH |
808 | #ifdef SUPPORT_TRANSLATE_IP_ADDRESS |
809 | fprintf(f, " translate_ip_address"); | |
810 | #endif | |
f174f16e PH |
811 | #ifdef SUPPORT_MOVE_FROZEN_MESSAGES |
812 | fprintf(f, " move_frozen_messages"); | |
813 | #endif | |
8523533c TK |
814 | #ifdef WITH_CONTENT_SCAN |
815 | fprintf(f, " Content_Scanning"); | |
816 | #endif | |
817 | #ifdef WITH_OLD_DEMIME | |
818 | fprintf(f, " Old_Demime"); | |
819 | #endif | |
74f150bf JH |
820 | #ifndef DISABLE_DKIM |
821 | fprintf(f, " DKIM"); | |
822 | #endif | |
ef1bbb27 HSHR |
823 | #ifndef DISABLE_DNSSEC |
824 | fprintf(f, " DNSSEC"); | |
825 | #endif | |
0cbf2b82 JH |
826 | #ifndef DISABLE_EVENT |
827 | fprintf(f, " Event"); | |
828 | #endif | |
8c5d388a JH |
829 | #ifdef SUPPORT_I18N |
830 | fprintf(f, " I18N"); | |
831 | #endif | |
74f150bf JH |
832 | #ifndef DISABLE_OCSP |
833 | fprintf(f, " OCSP"); | |
834 | #endif | |
4d832da1 TL |
835 | #ifndef DISABLE_PRDR |
836 | fprintf(f, " PRDR"); | |
837 | #endif | |
cee5f132 JH |
838 | #ifdef SUPPORT_PROXY |
839 | fprintf(f, " PROXY"); | |
840 | #endif | |
f0989ec0 | 841 | #ifdef SUPPORT_SOCKS |
74f150bf | 842 | fprintf(f, " SOCKS"); |
f2de3a33 | 843 | #endif |
8523533c TK |
844 | #ifdef EXPERIMENTAL_SPF |
845 | fprintf(f, " Experimental_SPF"); | |
846 | #endif | |
847 | #ifdef EXPERIMENTAL_SRS | |
848 | fprintf(f, " Experimental_SRS"); | |
849 | #endif | |
850 | #ifdef EXPERIMENTAL_BRIGHTMAIL | |
851 | fprintf(f, " Experimental_Brightmail"); | |
852 | #endif | |
043b1248 JH |
853 | #ifdef EXPERIMENTAL_DANE |
854 | fprintf(f, " Experimental_DANE"); | |
855 | #endif | |
6a8f9482 TK |
856 | #ifdef EXPERIMENTAL_DCC |
857 | fprintf(f, " Experimental_DCC"); | |
858 | #endif | |
4840604e TL |
859 | #ifdef EXPERIMENTAL_DMARC |
860 | fprintf(f, " Experimental_DMARC"); | |
861 | #endif | |
895fbaf2 JH |
862 | #ifdef EXPERIMENTAL_DSN_INFO |
863 | fprintf(f, " Experimental_DSN_info"); | |
864 | #endif | |
059ec3d9 PH |
865 | fprintf(f, "\n"); |
866 | ||
e6d225ae DW |
867 | fprintf(f, "Lookups (built-in):"); |
868 | #if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2 | |
059ec3d9 PH |
869 | fprintf(f, " lsearch wildlsearch nwildlsearch iplsearch"); |
870 | #endif | |
e6d225ae | 871 | #if defined(LOOKUP_CDB) && LOOKUP_CDB!=2 |
059ec3d9 PH |
872 | fprintf(f, " cdb"); |
873 | #endif | |
e6d225ae | 874 | #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2 |
4a6a987a | 875 | fprintf(f, " dbm dbmjz dbmnz"); |
059ec3d9 | 876 | #endif |
e6d225ae | 877 | #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2 |
059ec3d9 PH |
878 | fprintf(f, " dnsdb"); |
879 | #endif | |
e6d225ae | 880 | #if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2 |
059ec3d9 PH |
881 | fprintf(f, " dsearch"); |
882 | #endif | |
e6d225ae | 883 | #if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2 |
059ec3d9 PH |
884 | fprintf(f, " ibase"); |
885 | #endif | |
e6d225ae | 886 | #if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2 |
059ec3d9 PH |
887 | fprintf(f, " ldap ldapdn ldapm"); |
888 | #endif | |
e6d225ae | 889 | #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2 |
059ec3d9 PH |
890 | fprintf(f, " mysql"); |
891 | #endif | |
e6d225ae | 892 | #if defined(LOOKUP_NIS) && LOOKUP_NIS!=2 |
059ec3d9 PH |
893 | fprintf(f, " nis nis0"); |
894 | #endif | |
e6d225ae | 895 | #if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2 |
059ec3d9 PH |
896 | fprintf(f, " nisplus"); |
897 | #endif | |
e6d225ae | 898 | #if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2 |
059ec3d9 PH |
899 | fprintf(f, " oracle"); |
900 | #endif | |
e6d225ae | 901 | #if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2 |
059ec3d9 PH |
902 | fprintf(f, " passwd"); |
903 | #endif | |
e6d225ae | 904 | #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2 |
059ec3d9 PH |
905 | fprintf(f, " pgsql"); |
906 | #endif | |
de78e2d5 JH |
907 | #if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2 |
908 | fprintf(f, " redis"); | |
909 | #endif | |
e6d225ae | 910 | #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2 |
13b685f9 PH |
911 | fprintf(f, " sqlite"); |
912 | #endif | |
e6d225ae | 913 | #if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2 |
059ec3d9 PH |
914 | fprintf(f, " testdb"); |
915 | #endif | |
e6d225ae | 916 | #if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2 |
059ec3d9 PH |
917 | fprintf(f, " whoson"); |
918 | #endif | |
919 | fprintf(f, "\n"); | |
920 | ||
921 | fprintf(f, "Authenticators:"); | |
922 | #ifdef AUTH_CRAM_MD5 | |
923 | fprintf(f, " cram_md5"); | |
924 | #endif | |
925 | #ifdef AUTH_CYRUS_SASL | |
926 | fprintf(f, " cyrus_sasl"); | |
927 | #endif | |
14aa5a05 PH |
928 | #ifdef AUTH_DOVECOT |
929 | fprintf(f, " dovecot"); | |
930 | #endif | |
44bbabb5 PP |
931 | #ifdef AUTH_GSASL |
932 | fprintf(f, " gsasl"); | |
933 | #endif | |
dde3daac PP |
934 | #ifdef AUTH_HEIMDAL_GSSAPI |
935 | fprintf(f, " heimdal_gssapi"); | |
936 | #endif | |
059ec3d9 PH |
937 | #ifdef AUTH_PLAINTEXT |
938 | fprintf(f, " plaintext"); | |
939 | #endif | |
940 | #ifdef AUTH_SPA | |
941 | fprintf(f, " spa"); | |
942 | #endif | |
b3ef41c9 JH |
943 | #ifdef AUTH_TLS |
944 | fprintf(f, " tls"); | |
945 | #endif | |
059ec3d9 PH |
946 | fprintf(f, "\n"); |
947 | ||
948 | fprintf(f, "Routers:"); | |
949 | #ifdef ROUTER_ACCEPT | |
950 | fprintf(f, " accept"); | |
951 | #endif | |
952 | #ifdef ROUTER_DNSLOOKUP | |
953 | fprintf(f, " dnslookup"); | |
954 | #endif | |
955 | #ifdef ROUTER_IPLITERAL | |
956 | fprintf(f, " ipliteral"); | |
957 | #endif | |
958 | #ifdef ROUTER_IPLOOKUP | |
959 | fprintf(f, " iplookup"); | |
960 | #endif | |
961 | #ifdef ROUTER_MANUALROUTE | |
962 | fprintf(f, " manualroute"); | |
963 | #endif | |
964 | #ifdef ROUTER_QUERYPROGRAM | |
965 | fprintf(f, " queryprogram"); | |
966 | #endif | |
967 | #ifdef ROUTER_REDIRECT | |
968 | fprintf(f, " redirect"); | |
969 | #endif | |
970 | fprintf(f, "\n"); | |
971 | ||
972 | fprintf(f, "Transports:"); | |
973 | #ifdef TRANSPORT_APPENDFILE | |
974 | fprintf(f, " appendfile"); | |
975 | #ifdef SUPPORT_MAILDIR | |
976 | fprintf(f, "/maildir"); | |
977 | #endif | |
978 | #ifdef SUPPORT_MAILSTORE | |
979 | fprintf(f, "/mailstore"); | |
980 | #endif | |
981 | #ifdef SUPPORT_MBX | |
982 | fprintf(f, "/mbx"); | |
983 | #endif | |
984 | #endif | |
985 | #ifdef TRANSPORT_AUTOREPLY | |
986 | fprintf(f, " autoreply"); | |
987 | #endif | |
988 | #ifdef TRANSPORT_LMTP | |
989 | fprintf(f, " lmtp"); | |
990 | #endif | |
991 | #ifdef TRANSPORT_PIPE | |
992 | fprintf(f, " pipe"); | |
993 | #endif | |
994 | #ifdef TRANSPORT_SMTP | |
995 | fprintf(f, " smtp"); | |
996 | #endif | |
997 | fprintf(f, "\n"); | |
998 | ||
999 | if (fixed_never_users[0] > 0) | |
1000 | { | |
1001 | int i; | |
1002 | fprintf(f, "Fixed never_users: "); | |
1003 | for (i = 1; i <= (int)fixed_never_users[0] - 1; i++) | |
1004 | fprintf(f, "%d:", (unsigned int)fixed_never_users[i]); | |
1005 | fprintf(f, "%d\n", (unsigned int)fixed_never_users[i]); | |
1006 | } | |
21c28500 | 1007 | |
73a46702 | 1008 | fprintf(f, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t)); |
36f12725 | 1009 | |
6545de78 PP |
1010 | /* Everything else is details which are only worth reporting when debugging. |
1011 | Perhaps the tls_version_report should move into this too. */ | |
1012 | DEBUG(D_any) do { | |
1013 | ||
1014 | int i; | |
1015 | ||
b3c261f7 PP |
1016 | /* clang defines __GNUC__ (at least, for me) so test for it first */ |
1017 | #if defined(__clang__) | |
1018 | fprintf(f, "Compiler: CLang [%s]\n", __clang_version__); | |
1019 | #elif defined(__GNUC__) | |
1020 | fprintf(f, "Compiler: GCC [%s]\n", | |
1021 | # ifdef __VERSION__ | |
1022 | __VERSION__ | |
1023 | # else | |
1024 | "? unknown version ?" | |
1025 | # endif | |
1026 | ); | |
1027 | #else | |
1028 | fprintf(f, "Compiler: <unknown>\n"); | |
1029 | #endif | |
1030 | ||
754a0503 PP |
1031 | #ifdef SUPPORT_TLS |
1032 | tls_version_report(f); | |
1033 | #endif | |
8c5d388a | 1034 | #ifdef SUPPORT_I18N |
b04be5e7 JH |
1035 | utf8_version_report(f); |
1036 | #endif | |
754a0503 | 1037 | |
fc362fc5 JH |
1038 | for (authi = auths_available; *authi->driver_name != '\0'; ++authi) |
1039 | if (authi->version_report) | |
44bbabb5 | 1040 | (*authi->version_report)(f); |
6545de78 | 1041 | |
decd95cb | 1042 | /* PCRE_PRERELEASE is either defined and empty or a bare sequence of |
6475bd82 PP |
1043 | characters; unless it's an ancient version of PCRE in which case it |
1044 | is not defined. */ | |
1045 | #ifndef PCRE_PRERELEASE | |
1046 | #define PCRE_PRERELEASE | |
1047 | #endif | |
1048 | #define QUOTE(X) #X | |
1049 | #define EXPAND_AND_QUOTE(X) QUOTE(X) | |
6545de78 PP |
1050 | fprintf(f, "Library version: PCRE: Compile: %d.%d%s\n" |
1051 | " Runtime: %s\n", | |
1052 | PCRE_MAJOR, PCRE_MINOR, | |
6475bd82 | 1053 | EXPAND_AND_QUOTE(PCRE_PRERELEASE) "", |
6545de78 | 1054 | pcre_version()); |
6475bd82 PP |
1055 | #undef QUOTE |
1056 | #undef EXPAND_AND_QUOTE | |
6545de78 PP |
1057 | |
1058 | init_lookup_list(); | |
1059 | for (i = 0; i < lookup_list_count; i++) | |
6545de78 PP |
1060 | if (lookup_list[i]->version_report) |
1061 | lookup_list[i]->version_report(f); | |
6545de78 | 1062 | |
b70d2586 PP |
1063 | #ifdef WHITELIST_D_MACROS |
1064 | fprintf(f, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS); | |
1065 | #else | |
1066 | fprintf(f, "WHITELIST_D_MACROS unset\n"); | |
1067 | #endif | |
1068 | #ifdef TRUSTED_CONFIG_LIST | |
1069 | fprintf(f, "TRUSTED_CONFIG_LIST: \"%s\"\n", TRUSTED_CONFIG_LIST); | |
1070 | #else | |
1071 | fprintf(f, "TRUSTED_CONFIG_LIST unset\n"); | |
1072 | #endif | |
1073 | ||
6545de78 | 1074 | } while (0); |
059ec3d9 PH |
1075 | } |
1076 | ||
1077 | ||
98a90c36 PP |
1078 | /************************************************* |
1079 | * Show auxiliary information about Exim * | |
1080 | *************************************************/ | |
1081 | ||
1082 | static void | |
1083 | show_exim_information(enum commandline_info request, FILE *stream) | |
1084 | { | |
1085 | const uschar **pp; | |
1086 | ||
1087 | switch(request) | |
1088 | { | |
1089 | case CMDINFO_NONE: | |
1090 | fprintf(stream, "Oops, something went wrong.\n"); | |
1091 | return; | |
1092 | case CMDINFO_HELP: | |
1093 | fprintf(stream, | |
1094 | "The -bI: flag takes a string indicating which information to provide.\n" | |
1095 | "If the string is not recognised, you'll get this help (on stderr).\n" | |
1096 | "\n" | |
1097 | " exim -bI:help this information\n" | |
36a3ae5f | 1098 | " exim -bI:dscp dscp value keywords known\n" |
98a90c36 PP |
1099 | " exim -bI:sieve list of supported sieve extensions, one per line.\n" |
1100 | ); | |
1101 | return; | |
1102 | case CMDINFO_SIEVE: | |
1103 | for (pp = exim_sieve_extension_list; *pp; ++pp) | |
1104 | fprintf(stream, "%s\n", *pp); | |
1105 | return; | |
36a3ae5f PP |
1106 | case CMDINFO_DSCP: |
1107 | dscp_list_to_stream(stream); | |
1108 | return; | |
98a90c36 PP |
1109 | } |
1110 | } | |
059ec3d9 PH |
1111 | |
1112 | ||
1113 | /************************************************* | |
1114 | * Quote a local part * | |
1115 | *************************************************/ | |
1116 | ||
1117 | /* This function is used when a sender address or a From: or Sender: header | |
1118 | line is being created from the caller's login, or from an authenticated_id. It | |
1119 | applies appropriate quoting rules for a local part. | |
1120 | ||
1121 | Argument: the local part | |
1122 | Returns: the local part, quoted if necessary | |
1123 | */ | |
1124 | ||
1125 | uschar * | |
1126 | local_part_quote(uschar *lpart) | |
1127 | { | |
1128 | BOOL needs_quote = FALSE; | |
1129 | int size, ptr; | |
1130 | uschar *yield; | |
1131 | uschar *t; | |
1132 | ||
1133 | for (t = lpart; !needs_quote && *t != 0; t++) | |
1134 | { | |
1135 | needs_quote = !isalnum(*t) && strchr("!#$%&'*+-/=?^_`{|}~", *t) == NULL && | |
1136 | (*t != '.' || t == lpart || t[1] == 0); | |
1137 | } | |
1138 | ||
1139 | if (!needs_quote) return lpart; | |
1140 | ||
1141 | size = ptr = 0; | |
1142 | yield = string_cat(NULL, &size, &ptr, US"\"", 1); | |
1143 | ||
1144 | for (;;) | |
1145 | { | |
1146 | uschar *nq = US Ustrpbrk(lpart, "\\\""); | |
1147 | if (nq == NULL) | |
1148 | { | |
1149 | yield = string_cat(yield, &size, &ptr, lpart, Ustrlen(lpart)); | |
1150 | break; | |
1151 | } | |
1152 | yield = string_cat(yield, &size, &ptr, lpart, nq - lpart); | |
1153 | yield = string_cat(yield, &size, &ptr, US"\\", 1); | |
1154 | yield = string_cat(yield, &size, &ptr, nq, 1); | |
1155 | lpart = nq + 1; | |
1156 | } | |
1157 | ||
1158 | yield = string_cat(yield, &size, &ptr, US"\"", 1); | |
1159 | yield[ptr] = 0; | |
1160 | return yield; | |
1161 | } | |
1162 | ||
1163 | ||
1164 | ||
1165 | #ifdef USE_READLINE | |
1166 | /************************************************* | |
1167 | * Load readline() functions * | |
1168 | *************************************************/ | |
1169 | ||
1170 | /* This function is called from testing executions that read data from stdin, | |
1171 | but only when running as the calling user. Currently, only -be does this. The | |
1172 | function loads the readline() function library and passes back the functions. | |
1173 | On some systems, it needs the curses library, so load that too, but try without | |
1174 | it if loading fails. All this functionality has to be requested at build time. | |
1175 | ||
1176 | Arguments: | |
1177 | fn_readline_ptr pointer to where to put the readline pointer | |
1178 | fn_addhist_ptr pointer to where to put the addhistory function | |
1179 | ||
1180 | Returns: the dlopen handle or NULL on failure | |
1181 | */ | |
1182 | ||
1183 | static void * | |
1ba28e2b PP |
1184 | set_readline(char * (**fn_readline_ptr)(const char *), |
1185 | void (**fn_addhist_ptr)(const char *)) | |
059ec3d9 PH |
1186 | { |
1187 | void *dlhandle; | |
e12f8c32 | 1188 | void *dlhandle_curses = dlopen("libcurses." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_LAZY); |
059ec3d9 | 1189 | |
e12f8c32 | 1190 | dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW); |
059ec3d9 PH |
1191 | if (dlhandle_curses != NULL) dlclose(dlhandle_curses); |
1192 | ||
1193 | if (dlhandle != NULL) | |
1194 | { | |
1ba28e2b PP |
1195 | /* Checked manual pages; at least in GNU Readline 6.1, the prototypes are: |
1196 | * char * readline (const char *prompt); | |
1197 | * void add_history (const char *string); | |
1198 | */ | |
1199 | *fn_readline_ptr = (char *(*)(const char*))dlsym(dlhandle, "readline"); | |
1200 | *fn_addhist_ptr = (void(*)(const char*))dlsym(dlhandle, "add_history"); | |
059ec3d9 PH |
1201 | } |
1202 | else | |
1203 | { | |
1204 | DEBUG(D_any) debug_printf("failed to load readline: %s\n", dlerror()); | |
1205 | } | |
1206 | ||
1207 | return dlhandle; | |
1208 | } | |
1209 | #endif | |
1210 | ||
1211 | ||
1212 | ||
1213 | /************************************************* | |
1214 | * Get a line from stdin for testing things * | |
1215 | *************************************************/ | |
1216 | ||
1217 | /* This function is called when running tests that can take a number of lines | |
1218 | of input (for example, -be and -bt). It handles continuations and trailing | |
1219 | spaces. And prompting and a blank line output on eof. If readline() is in use, | |
1220 | the arguments are non-NULL and provide the relevant functions. | |
1221 | ||
1222 | Arguments: | |
1223 | fn_readline readline function or NULL | |
1224 | fn_addhist addhist function or NULL | |
1225 | ||
1226 | Returns: pointer to dynamic memory, or NULL at end of file | |
1227 | */ | |
1228 | ||
1229 | static uschar * | |
1ba28e2b | 1230 | get_stdinput(char *(*fn_readline)(const char *), void(*fn_addhist)(const char *)) |
059ec3d9 PH |
1231 | { |
1232 | int i; | |
1233 | int size = 0; | |
1234 | int ptr = 0; | |
1235 | uschar *yield = NULL; | |
1236 | ||
328895cc | 1237 | if (fn_readline == NULL) { printf("> "); fflush(stdout); } |
059ec3d9 PH |
1238 | |
1239 | for (i = 0;; i++) | |
1240 | { | |
1241 | uschar buffer[1024]; | |
1242 | uschar *p, *ss; | |
1243 | ||
1244 | #ifdef USE_READLINE | |
1245 | char *readline_line = NULL; | |
1246 | if (fn_readline != NULL) | |
1247 | { | |
1248 | if ((readline_line = fn_readline((i > 0)? "":"> ")) == NULL) break; | |
1249 | if (*readline_line != 0 && fn_addhist != NULL) fn_addhist(readline_line); | |
1250 | p = US readline_line; | |
1251 | } | |
1252 | else | |
1253 | #endif | |
1254 | ||
1255 | /* readline() not in use */ | |
1256 | ||
1257 | { | |
1258 | if (Ufgets(buffer, sizeof(buffer), stdin) == NULL) break; | |
1259 | p = buffer; | |
1260 | } | |
1261 | ||
1262 | /* Handle the line */ | |
1263 | ||
1264 | ss = p + (int)Ustrlen(p); | |
1265 | while (ss > p && isspace(ss[-1])) ss--; | |
1266 | ||
1267 | if (i > 0) | |
1268 | { | |
1269 | while (p < ss && isspace(*p)) p++; /* leading space after cont */ | |
1270 | } | |
1271 | ||
1272 | yield = string_cat(yield, &size, &ptr, p, ss - p); | |
1273 | ||
1274 | #ifdef USE_READLINE | |
1275 | if (fn_readline != NULL) free(readline_line); | |
1276 | #endif | |
1277 | ||
1278 | if (ss == p || yield[ptr-1] != '\\') | |
1279 | { | |
1280 | yield[ptr] = 0; | |
1281 | break; | |
1282 | } | |
1283 | yield[--ptr] = 0; | |
1284 | } | |
1285 | ||
1286 | if (yield == NULL) printf("\n"); | |
1287 | return yield; | |
1288 | } | |
1289 | ||
1290 | ||
1291 | ||
81ea09ca NM |
1292 | /************************************************* |
1293 | * Output usage information for the program * | |
1294 | *************************************************/ | |
1295 | ||
1296 | /* This function is called when there are no recipients | |
1297 | or a specific --help argument was added. | |
1298 | ||
1299 | Arguments: | |
1300 | progname information on what name we were called by | |
1301 | ||
1302 | Returns: DOES NOT RETURN | |
1303 | */ | |
1304 | ||
1305 | static void | |
1306 | exim_usage(uschar *progname) | |
1307 | { | |
1308 | ||
1309 | /* Handle specific program invocation varients */ | |
1310 | if (Ustrcmp(progname, US"-mailq") == 0) | |
1311 | { | |
1312 | fprintf(stderr, | |
e765a0f1 | 1313 | "mailq - list the contents of the mail queue\n\n" |
81ea09ca NM |
1314 | "For a list of options, see the Exim documentation.\n"); |
1315 | exit(EXIT_FAILURE); | |
1316 | } | |
1317 | ||
1318 | /* Generic usage - we output this whatever happens */ | |
1319 | fprintf(stderr, | |
1320 | "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n" | |
1321 | "not directly from a shell command line. Options and/or arguments control\n" | |
1322 | "what it does when called. For a list of options, see the Exim documentation.\n"); | |
1323 | ||
1324 | exit(EXIT_FAILURE); | |
1325 | } | |
1326 | ||
1327 | ||
1328 | ||
a7cbbf50 PP |
1329 | /************************************************* |
1330 | * Validate that the macros given are okay * | |
1331 | *************************************************/ | |
1332 | ||
1333 | /* Typically, Exim will drop privileges if macros are supplied. In some | |
1334 | cases, we want to not do so. | |
1335 | ||
1336 | Arguments: none (macros is a global) | |
1337 | Returns: true if trusted, false otherwise | |
1338 | */ | |
1339 | ||
1340 | static BOOL | |
1341 | macros_trusted(void) | |
1342 | { | |
1343 | #ifdef WHITELIST_D_MACROS | |
1344 | macro_item *m; | |
1345 | uschar *whitelisted, *end, *p, **whites, **w; | |
1346 | int white_count, i, n; | |
1347 | size_t len; | |
1348 | BOOL prev_char_item, found; | |
1349 | #endif | |
1350 | ||
1351 | if (macros == NULL) | |
1352 | return TRUE; | |
1353 | #ifndef WHITELIST_D_MACROS | |
1354 | return FALSE; | |
1355 | #else | |
1356 | ||
66581d1e PP |
1357 | /* We only trust -D overrides for some invoking users: |
1358 | root, the exim run-time user, the optional config owner user. | |
1359 | I don't know why config-owner would be needed, but since they can own the | |
1360 | config files anyway, there's no security risk to letting them override -D. */ | |
1361 | if ( ! ((real_uid == root_uid) | |
1362 | || (real_uid == exim_uid) | |
1363 | #ifdef CONFIGURE_OWNER | |
1364 | || (real_uid == config_uid) | |
1365 | #endif | |
1366 | )) | |
1367 | { | |
1368 | debug_printf("macros_trusted rejecting macros for uid %d\n", (int) real_uid); | |
1369 | return FALSE; | |
1370 | } | |
1371 | ||
a7cbbf50 PP |
1372 | /* Get a list of macros which are whitelisted */ |
1373 | whitelisted = string_copy_malloc(US WHITELIST_D_MACROS); | |
1374 | prev_char_item = FALSE; | |
1375 | white_count = 0; | |
1376 | for (p = whitelisted; *p != '\0'; ++p) | |
1377 | { | |
1378 | if (*p == ':' || isspace(*p)) | |
1379 | { | |
1380 | *p = '\0'; | |
1381 | if (prev_char_item) | |
1382 | ++white_count; | |
1383 | prev_char_item = FALSE; | |
1384 | continue; | |
1385 | } | |
1386 | if (!prev_char_item) | |
1387 | prev_char_item = TRUE; | |
1388 | } | |
1389 | end = p; | |
1390 | if (prev_char_item) | |
1391 | ++white_count; | |
1392 | if (!white_count) | |
1393 | return FALSE; | |
1394 | whites = store_malloc(sizeof(uschar *) * (white_count+1)); | |
1395 | for (p = whitelisted, i = 0; (p != end) && (i < white_count); ++p) | |
1396 | { | |
1397 | if (*p != '\0') | |
1398 | { | |
1399 | whites[i++] = p; | |
1400 | if (i == white_count) | |
1401 | break; | |
1402 | while (*p != '\0' && p < end) | |
1403 | ++p; | |
1404 | } | |
1405 | } | |
1406 | whites[i] = NULL; | |
1407 | ||
1408 | /* The list of macros should be very short. Accept the N*M complexity. */ | |
1409 | for (m = macros; m != NULL; m = m->next) | |
1410 | { | |
1411 | found = FALSE; | |
1412 | for (w = whites; *w; ++w) | |
1413 | if (Ustrcmp(*w, m->name) == 0) | |
1414 | { | |
1415 | found = TRUE; | |
1416 | break; | |
1417 | } | |
1418 | if (!found) | |
1419 | return FALSE; | |
1420 | if (m->replacement == NULL) | |
1421 | continue; | |
1422 | len = Ustrlen(m->replacement); | |
1423 | if (len == 0) | |
1424 | continue; | |
1425 | n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len, | |
1426 | 0, PCRE_EOPT, NULL, 0); | |
1427 | if (n < 0) | |
1428 | { | |
1429 | if (n != PCRE_ERROR_NOMATCH) | |
1430 | debug_printf("macros_trusted checking %s returned %d\n", m->name, n); | |
1431 | return FALSE; | |
1432 | } | |
1433 | } | |
43236f35 | 1434 | DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n"); |
a7cbbf50 PP |
1435 | return TRUE; |
1436 | #endif | |
1437 | } | |
1438 | ||
1439 | ||
059ec3d9 PH |
1440 | /************************************************* |
1441 | * Entry point and high-level code * | |
1442 | *************************************************/ | |
1443 | ||
1444 | /* Entry point for the Exim mailer. Analyse the arguments and arrange to take | |
1445 | the appropriate action. All the necessary functions are present in the one | |
1446 | binary. I originally thought one should split it up, but it turns out that so | |
1447 | much of the apparatus is needed in each chunk that one might as well just have | |
1448 | it all available all the time, which then makes the coding easier as well. | |
1449 | ||
1450 | Arguments: | |
1451 | argc count of entries in argv | |
1452 | argv argument strings, with argv[0] being the program name | |
1453 | ||
1454 | Returns: EXIT_SUCCESS if terminated successfully | |
1455 | EXIT_FAILURE otherwise, except when a message has been sent | |
1456 | to the sender, and -oee was given | |
1457 | */ | |
1458 | ||
1459 | int | |
1460 | main(int argc, char **cargv) | |
1461 | { | |
1462 | uschar **argv = USS cargv; | |
1463 | int arg_receive_timeout = -1; | |
1464 | int arg_smtp_receive_timeout = -1; | |
1465 | int arg_error_handling = error_handling; | |
f05da2e8 PH |
1466 | int filter_sfd = -1; |
1467 | int filter_ufd = -1; | |
059ec3d9 | 1468 | int group_count; |
1670ef10 | 1469 | int i, rv; |
059ec3d9 PH |
1470 | int list_queue_option = 0; |
1471 | int msg_action = 0; | |
1472 | int msg_action_arg = -1; | |
1473 | int namelen = (argv[0] == NULL)? 0 : Ustrlen(argv[0]); | |
1474 | int queue_only_reason = 0; | |
1475 | #ifdef EXIM_PERL | |
1476 | int perl_start_option = 0; | |
1477 | #endif | |
1478 | int recipients_arg = argc; | |
1479 | int sender_address_domain = 0; | |
1480 | int test_retry_arg = -1; | |
1481 | int test_rewrite_arg = -1; | |
1482 | BOOL arg_queue_only = FALSE; | |
1483 | BOOL bi_option = FALSE; | |
1484 | BOOL checking = FALSE; | |
1485 | BOOL count_queue = FALSE; | |
1486 | BOOL expansion_test = FALSE; | |
1487 | BOOL extract_recipients = FALSE; | |
f4ee74ac | 1488 | BOOL flag_G = FALSE; |
12f69989 | 1489 | BOOL flag_n = FALSE; |
059ec3d9 PH |
1490 | BOOL forced_delivery = FALSE; |
1491 | BOOL f_end_dot = FALSE; | |
1492 | BOOL deliver_give_up = FALSE; | |
1493 | BOOL list_queue = FALSE; | |
1494 | BOOL list_options = FALSE; | |
bf3c2c6b | 1495 | BOOL list_config = FALSE; |
059ec3d9 PH |
1496 | BOOL local_queue_only; |
1497 | BOOL more = TRUE; | |
1498 | BOOL one_msg_action = FALSE; | |
1499 | BOOL queue_only_set = FALSE; | |
1500 | BOOL receiving_message = TRUE; | |
33d73e3b | 1501 | BOOL sender_ident_set = FALSE; |
8669f003 | 1502 | BOOL session_local_queue_only; |
059ec3d9 PH |
1503 | BOOL unprivileged; |
1504 | BOOL removed_privilege = FALSE; | |
81ea09ca | 1505 | BOOL usage_wanted = FALSE; |
059ec3d9 PH |
1506 | BOOL verify_address_mode = FALSE; |
1507 | BOOL verify_as_sender = FALSE; | |
1508 | BOOL version_printed = FALSE; | |
1509 | uschar *alias_arg = NULL; | |
1510 | uschar *called_as = US""; | |
a3fb9793 | 1511 | uschar *cmdline_syslog_name = NULL; |
059ec3d9 PH |
1512 | uschar *start_queue_run_id = NULL; |
1513 | uschar *stop_queue_run_id = NULL; | |
328895cc | 1514 | uschar *expansion_test_message = NULL; |
059ec3d9 PH |
1515 | uschar *ftest_domain = NULL; |
1516 | uschar *ftest_localpart = NULL; | |
1517 | uschar *ftest_prefix = NULL; | |
1518 | uschar *ftest_suffix = NULL; | |
0ad2e0fc | 1519 | uschar *log_oneline = NULL; |
8544e77a | 1520 | uschar *malware_test_file = NULL; |
059ec3d9 PH |
1521 | uschar *real_sender_address; |
1522 | uschar *originator_home = US"/"; | |
a3fb9793 | 1523 | size_t sz; |
059ec3d9 PH |
1524 | void *reset_point; |
1525 | ||
1526 | struct passwd *pw; | |
1527 | struct stat statbuf; | |
1528 | pid_t passed_qr_pid = (pid_t)0; | |
1529 | int passed_qr_pipe = -1; | |
1530 | gid_t group_list[NGROUPS_MAX]; | |
1531 | ||
98a90c36 PP |
1532 | /* For the -bI: flag */ |
1533 | enum commandline_info info_flag = CMDINFO_NONE; | |
1534 | BOOL info_stdout = FALSE; | |
1535 | ||
059ec3d9 PH |
1536 | /* Possible options for -R and -S */ |
1537 | ||
1538 | static uschar *rsopts[] = { US"f", US"ff", US"r", US"rf", US"rff" }; | |
1539 | ||
1540 | /* Need to define this in case we need to change the environment in order | |
1541 | to get rid of a bogus time zone. We have to make it char rather than uschar | |
1542 | because some OS define it in /usr/include/unistd.h. */ | |
1543 | ||
1544 | extern char **environ; | |
1545 | ||
35edf2ff | 1546 | /* If the Exim user and/or group and/or the configuration file owner/group were |
059ec3d9 PH |
1547 | defined by ref:name at build time, we must now find the actual uid/gid values. |
1548 | This is a feature to make the lives of binary distributors easier. */ | |
1549 | ||
1550 | #ifdef EXIM_USERNAME | |
1551 | if (route_finduser(US EXIM_USERNAME, &pw, &exim_uid)) | |
1552 | { | |
10385c15 PP |
1553 | if (exim_uid == 0) |
1554 | { | |
1555 | fprintf(stderr, "exim: refusing to run with uid 0 for \"%s\"\n", | |
1556 | EXIM_USERNAME); | |
1557 | exit(EXIT_FAILURE); | |
1558 | } | |
084c1d8c PP |
1559 | /* If ref:name uses a number as the name, route_finduser() returns |
1560 | TRUE with exim_uid set and pw coerced to NULL. */ | |
1561 | if (pw) | |
1562 | exim_gid = pw->pw_gid; | |
1563 | #ifndef EXIM_GROUPNAME | |
1564 | else | |
1565 | { | |
1566 | fprintf(stderr, | |
1567 | "exim: ref:name should specify a usercode, not a group.\n" | |
1568 | "exim: can't let you get away with it unless you also specify a group.\n"); | |
1569 | exit(EXIT_FAILURE); | |
1570 | } | |
1571 | #endif | |
059ec3d9 PH |
1572 | } |
1573 | else | |
1574 | { | |
1575 | fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n", | |
1576 | EXIM_USERNAME); | |
1577 | exit(EXIT_FAILURE); | |
1578 | } | |
1579 | #endif | |
1580 | ||
1581 | #ifdef EXIM_GROUPNAME | |
1582 | if (!route_findgroup(US EXIM_GROUPNAME, &exim_gid)) | |
1583 | { | |
1584 | fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n", | |
1585 | EXIM_GROUPNAME); | |
1586 | exit(EXIT_FAILURE); | |
1587 | } | |
1588 | #endif | |
1589 | ||
1590 | #ifdef CONFIGURE_OWNERNAME | |
1591 | if (!route_finduser(US CONFIGURE_OWNERNAME, NULL, &config_uid)) | |
1592 | { | |
1593 | fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n", | |
1594 | CONFIGURE_OWNERNAME); | |
1595 | exit(EXIT_FAILURE); | |
1596 | } | |
1597 | #endif | |
1598 | ||
79d4bc3d PP |
1599 | /* We default the system_filter_user to be the Exim run-time user, as a |
1600 | sane non-root value. */ | |
1601 | system_filter_uid = exim_uid; | |
1602 | ||
35edf2ff PH |
1603 | #ifdef CONFIGURE_GROUPNAME |
1604 | if (!route_findgroup(US CONFIGURE_GROUPNAME, &config_gid)) | |
1605 | { | |
1606 | fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n", | |
1607 | CONFIGURE_GROUPNAME); | |
1608 | exit(EXIT_FAILURE); | |
1609 | } | |
1610 | #endif | |
1611 | ||
92e6a3d9 JH |
1612 | /* In the Cygwin environment, some initialization used to need doing. |
1613 | It was fudged in by means of this macro; now no longer but we'll leave | |
1614 | it in case of others. */ | |
059ec3d9 PH |
1615 | |
1616 | #ifdef OS_INIT | |
1617 | OS_INIT | |
1618 | #endif | |
1619 | ||
1620 | /* Check a field which is patched when we are running Exim within its | |
1621 | testing harness; do a fast initial check, and then the whole thing. */ | |
1622 | ||
1623 | running_in_test_harness = | |
1624 | *running_status == '<' && Ustrcmp(running_status, "<<<testing>>>") == 0; | |
1625 | ||
1626 | /* The C standard says that the equivalent of setlocale(LC_ALL, "C") is obeyed | |
1627 | at the start of a program; however, it seems that some environments do not | |
1628 | follow this. A "strange" locale can affect the formatting of timestamps, so we | |
1629 | make quite sure. */ | |
1630 | ||
1631 | setlocale(LC_ALL, "C"); | |
1632 | ||
1633 | /* Set up the default handler for timing using alarm(). */ | |
1634 | ||
1635 | os_non_restarting_signal(SIGALRM, sigalrm_handler); | |
1636 | ||
1637 | /* Ensure we have a buffer for constructing log entries. Use malloc directly, | |
1638 | because store_malloc writes a log entry on failure. */ | |
1639 | ||
1640 | log_buffer = (uschar *)malloc(LOG_BUFFER_SIZE); | |
1641 | if (log_buffer == NULL) | |
1642 | { | |
1643 | fprintf(stderr, "exim: failed to get store for log buffer\n"); | |
1644 | exit(EXIT_FAILURE); | |
1645 | } | |
1646 | ||
6c6d6e48 TF |
1647 | /* Initialize the default log options. */ |
1648 | ||
1649 | bits_set(log_selector, log_selector_size, log_default); | |
1650 | ||
059ec3d9 PH |
1651 | /* Set log_stderr to stderr, provided that stderr exists. This gets reset to |
1652 | NULL when the daemon is run and the file is closed. We have to use this | |
1653 | indirection, because some systems don't allow writing to the variable "stderr". | |
1654 | */ | |
1655 | ||
1656 | if (fstat(fileno(stderr), &statbuf) >= 0) log_stderr = stderr; | |
1657 | ||
1658 | /* Arrange for the PCRE regex library to use our store functions. Note that | |
1659 | the normal calls are actually macros that add additional arguments for | |
1660 | debugging purposes so we have to assign specially constructed functions here. | |
1661 | The default is to use store in the stacking pool, but this is overridden in the | |
1662 | regex_must_compile() function. */ | |
1663 | ||
1664 | pcre_malloc = function_store_get; | |
1665 | pcre_free = function_dummy_free; | |
1666 | ||
1667 | /* Ensure there is a big buffer for temporary use in several places. It is put | |
1668 | in malloc store so that it can be freed for enlargement if necessary. */ | |
1669 | ||
1670 | big_buffer = store_malloc(big_buffer_size); | |
1671 | ||
1672 | /* Set up the handler for the data request signal, and set the initial | |
1673 | descriptive text. */ | |
1674 | ||
1675 | set_process_info("initializing"); | |
1676 | os_restarting_signal(SIGUSR1, usr1_handler); | |
1677 | ||
1678 | /* SIGHUP is used to get the daemon to reconfigure. It gets set as appropriate | |
1679 | in the daemon code. For the rest of Exim's uses, we ignore it. */ | |
1680 | ||
1681 | signal(SIGHUP, SIG_IGN); | |
1682 | ||
1683 | /* We don't want to die on pipe errors as the code is written to handle | |
1684 | the write error instead. */ | |
1685 | ||
1686 | signal(SIGPIPE, SIG_IGN); | |
1687 | ||
1688 | /* Under some circumstance on some OS, Exim can get called with SIGCHLD | |
1689 | set to SIG_IGN. This causes subprocesses that complete before the parent | |
1690 | process waits for them not to hang around, so when Exim calls wait(), nothing | |
1691 | is there. The wait() code has been made robust against this, but let's ensure | |
1692 | that SIGCHLD is set to SIG_DFL, because it's tidier to wait and get a process | |
1693 | ending status. We use sigaction rather than plain signal() on those OS where | |
1694 | SA_NOCLDWAIT exists, because we want to be sure it is turned off. (There was a | |
1695 | problem on AIX with this.) */ | |
1696 | ||
1697 | #ifdef SA_NOCLDWAIT | |
1698 | { | |
1699 | struct sigaction act; | |
1700 | act.sa_handler = SIG_DFL; | |
1701 | sigemptyset(&(act.sa_mask)); | |
1702 | act.sa_flags = 0; | |
1703 | sigaction(SIGCHLD, &act, NULL); | |
1704 | } | |
1705 | #else | |
1706 | signal(SIGCHLD, SIG_DFL); | |
1707 | #endif | |
1708 | ||
1709 | /* Save the arguments for use if we re-exec exim as a daemon after receiving | |
1710 | SIGHUP. */ | |
1711 | ||
1712 | sighup_argv = argv; | |
1713 | ||
1714 | /* Set up the version number. Set up the leading 'E' for the external form of | |
1715 | message ids, set the pointer to the internal form, and initialize it to | |
1716 | indicate no message being processed. */ | |
1717 | ||
1718 | version_init(); | |
1719 | message_id_option[0] = '-'; | |
1720 | message_id_external = message_id_option + 1; | |
1721 | message_id_external[0] = 'E'; | |
1722 | message_id = message_id_external + 1; | |
1723 | message_id[0] = 0; | |
1724 | ||
67d175de | 1725 | /* Set the umask to zero so that any files Exim creates using open() are |
2632889e PH |
1726 | created with the modes that it specifies. NOTE: Files created with fopen() have |
1727 | a problem, which was not recognized till rather late (February 2006). With this | |
1728 | umask, such files will be world writeable. (They are all content scanning files | |
1729 | in the spool directory, which isn't world-accessible, so this is not a | |
1730 | disaster, but it's untidy.) I don't want to change this overall setting, | |
1731 | however, because it will interact badly with the open() calls. Instead, there's | |
1732 | now a function called modefopen() that fiddles with the umask while calling | |
1733 | fopen(). */ | |
059ec3d9 | 1734 | |
67d175de | 1735 | (void)umask(0); |
059ec3d9 PH |
1736 | |
1737 | /* Precompile the regular expression for matching a message id. Keep this in | |
1738 | step with the code that generates ids in the accept.c module. We need to do | |
1739 | this here, because the -M options check their arguments for syntactic validity | |
1740 | using mac_ismsgid, which uses this. */ | |
1741 | ||
1742 | regex_ismsgid = | |
1743 | regex_must_compile(US"^(?:[^\\W_]{6}-){2}[^\\W_]{2}$", FALSE, TRUE); | |
1744 | ||
a5bd321b | 1745 | /* Precompile the regular expression that is used for matching an SMTP error |
d6a96edc PH |
1746 | code, possibly extended, at the start of an error message. Note that the |
1747 | terminating whitespace character is included. */ | |
a5bd321b PH |
1748 | |
1749 | regex_smtp_code = | |
1750 | regex_must_compile(US"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?", | |
1751 | FALSE, TRUE); | |
1752 | ||
a7cbbf50 PP |
1753 | #ifdef WHITELIST_D_MACROS |
1754 | /* Precompile the regular expression used to filter the content of macros | |
1755 | given to -D for permissibility. */ | |
1756 | ||
1757 | regex_whitelisted_macro = | |
1758 | regex_must_compile(US"^[A-Za-z0-9_/.-]*$", FALSE, TRUE); | |
1759 | #endif | |
1760 | ||
f38917cc JH |
1761 | for (i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL; |
1762 | ||
059ec3d9 PH |
1763 | /* If the program is called as "mailq" treat it as equivalent to "exim -bp"; |
1764 | this seems to be a generally accepted convention, since one finds symbolic | |
1765 | links called "mailq" in standard OS configurations. */ | |
1766 | ||
1767 | if ((namelen == 5 && Ustrcmp(argv[0], "mailq") == 0) || | |
1768 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/mailq", 6) == 0)) | |
1769 | { | |
1770 | list_queue = TRUE; | |
1771 | receiving_message = FALSE; | |
1772 | called_as = US"-mailq"; | |
1773 | } | |
1774 | ||
1775 | /* If the program is called as "rmail" treat it as equivalent to | |
1776 | "exim -i -oee", thus allowing UUCP messages to be input using non-SMTP mode, | |
1777 | i.e. preventing a single dot on a line from terminating the message, and | |
1778 | returning with zero return code, even in cases of error (provided an error | |
1779 | message has been sent). */ | |
1780 | ||
1781 | if ((namelen == 5 && Ustrcmp(argv[0], "rmail") == 0) || | |
1782 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rmail", 6) == 0)) | |
1783 | { | |
1784 | dot_ends = FALSE; | |
1785 | called_as = US"-rmail"; | |
1786 | errors_sender_rc = EXIT_SUCCESS; | |
1787 | } | |
1788 | ||
1789 | /* If the program is called as "rsmtp" treat it as equivalent to "exim -bS"; | |
1790 | this is a smail convention. */ | |
1791 | ||
1792 | if ((namelen == 5 && Ustrcmp(argv[0], "rsmtp") == 0) || | |
1793 | (namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rsmtp", 6) == 0)) | |
1794 | { | |
1795 | smtp_input = smtp_batched_input = TRUE; | |
1796 | called_as = US"-rsmtp"; | |
1797 | } | |
1798 | ||
1799 | /* If the program is called as "runq" treat it as equivalent to "exim -q"; | |
1800 | this is a smail convention. */ | |
1801 | ||
1802 | if ((namelen == 4 && Ustrcmp(argv[0], "runq") == 0) || | |
1803 | (namelen > 4 && Ustrncmp(argv[0] + namelen - 5, "/runq", 5) == 0)) | |
1804 | { | |
1805 | queue_interval = 0; | |
1806 | receiving_message = FALSE; | |
1807 | called_as = US"-runq"; | |
1808 | } | |
1809 | ||
1810 | /* If the program is called as "newaliases" treat it as equivalent to | |
1811 | "exim -bi"; this is a sendmail convention. */ | |
1812 | ||
1813 | if ((namelen == 10 && Ustrcmp(argv[0], "newaliases") == 0) || | |
1814 | (namelen > 10 && Ustrncmp(argv[0] + namelen - 11, "/newaliases", 11) == 0)) | |
1815 | { | |
1816 | bi_option = TRUE; | |
1817 | receiving_message = FALSE; | |
1818 | called_as = US"-newaliases"; | |
1819 | } | |
1820 | ||
1821 | /* Save the original effective uid for a couple of uses later. It should | |
1822 | normally be root, but in some esoteric environments it may not be. */ | |
1823 | ||
1824 | original_euid = geteuid(); | |
1825 | ||
1826 | /* Get the real uid and gid. If the caller is root, force the effective uid/gid | |
1827 | to be the same as the real ones. This makes a difference only if Exim is setuid | |
1828 | (or setgid) to something other than root, which could be the case in some | |
1829 | special configurations. */ | |
1830 | ||
1831 | real_uid = getuid(); | |
1832 | real_gid = getgid(); | |
1833 | ||
1834 | if (real_uid == root_uid) | |
1835 | { | |
1670ef10 PP |
1836 | rv = setgid(real_gid); |
1837 | if (rv) | |
1838 | { | |
1839 | fprintf(stderr, "exim: setgid(%ld) failed: %s\n", | |
1840 | (long int)real_gid, strerror(errno)); | |
1841 | exit(EXIT_FAILURE); | |
1842 | } | |
1843 | rv = setuid(real_uid); | |
1844 | if (rv) | |
1845 | { | |
1846 | fprintf(stderr, "exim: setuid(%ld) failed: %s\n", | |
1847 | (long int)real_uid, strerror(errno)); | |
1848 | exit(EXIT_FAILURE); | |
1849 | } | |
059ec3d9 PH |
1850 | } |
1851 | ||
1852 | /* If neither the original real uid nor the original euid was root, Exim is | |
1853 | running in an unprivileged state. */ | |
1854 | ||
1855 | unprivileged = (real_uid != root_uid && original_euid != root_uid); | |
1856 | ||
059ec3d9 PH |
1857 | /* Scan the program's arguments. Some can be dealt with right away; others are |
1858 | simply recorded for checking and handling afterwards. Do a high-level switch | |
1859 | on the second character (the one after '-'), to save some effort. */ | |
1860 | ||
1861 | for (i = 1; i < argc; i++) | |
1862 | { | |
1863 | BOOL badarg = FALSE; | |
1864 | uschar *arg = argv[i]; | |
1865 | uschar *argrest; | |
1866 | int switchchar; | |
1867 | ||
1868 | /* An argument not starting with '-' is the start of a recipients list; | |
1869 | break out of the options-scanning loop. */ | |
1870 | ||
1871 | if (arg[0] != '-') | |
1872 | { | |
1873 | recipients_arg = i; | |
1874 | break; | |
1875 | } | |
1876 | ||
1877 | /* An option consistion of -- terminates the options */ | |
1878 | ||
1879 | if (Ustrcmp(arg, "--") == 0) | |
1880 | { | |
1881 | recipients_arg = i + 1; | |
1882 | break; | |
1883 | } | |
1884 | ||
1885 | /* Handle flagged options */ | |
1886 | ||
1887 | switchchar = arg[1]; | |
1888 | argrest = arg+2; | |
1889 | ||
1890 | /* Make all -ex options synonymous with -oex arguments, since that | |
1891 | is assumed by various callers. Also make -qR options synonymous with -R | |
1892 | options, as that seems to be required as well. Allow for -qqR too, and | |
1893 | the same for -S options. */ | |
1894 | ||
1895 | if (Ustrncmp(arg+1, "oe", 2) == 0 || | |
1896 | Ustrncmp(arg+1, "qR", 2) == 0 || | |
1897 | Ustrncmp(arg+1, "qS", 2) == 0) | |
1898 | { | |
1899 | switchchar = arg[2]; | |
1900 | argrest++; | |
1901 | } | |
1902 | else if (Ustrncmp(arg+1, "qqR", 3) == 0 || Ustrncmp(arg+1, "qqS", 3) == 0) | |
1903 | { | |
1904 | switchchar = arg[3]; | |
1905 | argrest += 2; | |
1906 | queue_2stage = TRUE; | |
1907 | } | |
1908 | ||
1909 | /* Make -r synonymous with -f, since it is a documented alias */ | |
1910 | ||
1911 | else if (arg[1] == 'r') switchchar = 'f'; | |
1912 | ||
1913 | /* Make -ov synonymous with -v */ | |
1914 | ||
1915 | else if (Ustrcmp(arg, "-ov") == 0) | |
1916 | { | |
1917 | switchchar = 'v'; | |
1918 | argrest++; | |
1919 | } | |
1920 | ||
4b2241d2 PP |
1921 | /* deal with --option_aliases */ |
1922 | else if (switchchar == '-') | |
1923 | { | |
1924 | if (Ustrcmp(argrest, "help") == 0) | |
1925 | { | |
1926 | usage_wanted = TRUE; | |
1927 | break; | |
1928 | } | |
1929 | else if (Ustrcmp(argrest, "version") == 0) | |
1930 | { | |
1931 | switchchar = 'b'; | |
73a46702 | 1932 | argrest = US"V"; |
4b2241d2 PP |
1933 | } |
1934 | } | |
1935 | ||
059ec3d9 PH |
1936 | /* High-level switch on active initial letter */ |
1937 | ||
1938 | switch(switchchar) | |
1939 | { | |
a3fb9793 PP |
1940 | |
1941 | /* sendmail uses -Ac and -Am to control which .cf file is used; | |
1942 | we ignore them. */ | |
1943 | case 'A': | |
1944 | if (*argrest == '\0') { badarg = TRUE; break; } | |
1945 | else | |
1946 | { | |
1947 | BOOL ignore = FALSE; | |
1948 | switch (*argrest) | |
1949 | { | |
1950 | case 'c': | |
1951 | case 'm': | |
1952 | if (*(argrest + 1) == '\0') | |
1953 | ignore = TRUE; | |
1954 | break; | |
1955 | } | |
1956 | if (!ignore) { badarg = TRUE; break; } | |
1957 | } | |
1958 | break; | |
1959 | ||
059ec3d9 PH |
1960 | /* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean |
1961 | so has no need of it. */ | |
1962 | ||
1963 | case 'B': | |
1964 | if (*argrest == 0) i++; /* Skip over the type */ | |
1965 | break; | |
1966 | ||
1967 | ||
1968 | case 'b': | |
1969 | receiving_message = FALSE; /* Reset TRUE for -bm, -bS, -bs below */ | |
1970 | ||
1971 | /* -bd: Run in daemon mode, awaiting SMTP connections. | |
1972 | -bdf: Ditto, but in the foreground. | |
1973 | */ | |
1974 | ||
1975 | if (*argrest == 'd') | |
1976 | { | |
1977 | daemon_listen = TRUE; | |
1978 | if (*(++argrest) == 'f') background_daemon = FALSE; | |
1979 | else if (*argrest != 0) { badarg = TRUE; break; } | |
1980 | } | |
1981 | ||
328895cc PH |
1982 | /* -be: Run in expansion test mode |
1983 | -bem: Ditto, but read a message from a file first | |
1984 | */ | |
059ec3d9 PH |
1985 | |
1986 | else if (*argrest == 'e') | |
328895cc | 1987 | { |
059ec3d9 | 1988 | expansion_test = checking = TRUE; |
328895cc PH |
1989 | if (argrest[1] == 'm') |
1990 | { | |
1991 | if (++i >= argc) { badarg = TRUE; break; } | |
1992 | expansion_test_message = argv[i]; | |
1993 | argrest++; | |
1994 | } | |
1995 | if (argrest[1] != 0) { badarg = TRUE; break; } | |
1996 | } | |
059ec3d9 | 1997 | |
f05da2e8 PH |
1998 | /* -bF: Run system filter test */ |
1999 | ||
2000 | else if (*argrest == 'F') | |
2001 | { | |
2002 | filter_test |= FTEST_SYSTEM; | |
2003 | if (*(++argrest) != 0) { badarg = TRUE; break; } | |
2004 | if (++i < argc) filter_test_sfile = argv[i]; else | |
2005 | { | |
2006 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
2007 | exit(EXIT_FAILURE); | |
2008 | } | |
2009 | } | |
2010 | ||
2011 | /* -bf: Run user filter test | |
059ec3d9 PH |
2012 | -bfd: Set domain for filter testing |
2013 | -bfl: Set local part for filter testing | |
2014 | -bfp: Set prefix for filter testing | |
2015 | -bfs: Set suffix for filter testing | |
2016 | */ | |
2017 | ||
f05da2e8 | 2018 | else if (*argrest == 'f') |
059ec3d9 | 2019 | { |
f05da2e8 | 2020 | if (*(++argrest) == 0) |
059ec3d9 | 2021 | { |
f05da2e8 PH |
2022 | filter_test |= FTEST_USER; |
2023 | if (++i < argc) filter_test_ufile = argv[i]; else | |
059ec3d9 PH |
2024 | { |
2025 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
2026 | exit(EXIT_FAILURE); | |
2027 | } | |
2028 | } | |
2029 | else | |
2030 | { | |
2031 | if (++i >= argc) | |
2032 | { | |
2033 | fprintf(stderr, "exim: string expected after %s\n", arg); | |
2034 | exit(EXIT_FAILURE); | |
2035 | } | |
2036 | if (Ustrcmp(argrest, "d") == 0) ftest_domain = argv[i]; | |
2037 | else if (Ustrcmp(argrest, "l") == 0) ftest_localpart = argv[i]; | |
2038 | else if (Ustrcmp(argrest, "p") == 0) ftest_prefix = argv[i]; | |
2039 | else if (Ustrcmp(argrest, "s") == 0) ftest_suffix = argv[i]; | |
2040 | else { badarg = TRUE; break; } | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | /* -bh: Host checking - an IP address must follow. */ | |
2045 | ||
2046 | else if (Ustrcmp(argrest, "h") == 0 || Ustrcmp(argrest, "hc") == 0) | |
2047 | { | |
2048 | if (++i >= argc) { badarg = TRUE; break; } | |
2049 | sender_host_address = argv[i]; | |
2050 | host_checking = checking = log_testing_mode = TRUE; | |
2051 | host_checking_callout = argrest[1] == 'c'; | |
2052 | } | |
2053 | ||
2054 | /* -bi: This option is used by sendmail to initialize *the* alias file, | |
2055 | though it has the -oA option to specify a different file. Exim has no | |
2056 | concept of *the* alias file, but since Sun's YP make script calls | |
2057 | sendmail this way, some support must be provided. */ | |
2058 | ||
2059 | else if (Ustrcmp(argrest, "i") == 0) bi_option = TRUE; | |
2060 | ||
98a90c36 PP |
2061 | /* -bI: provide information, of the type to follow after a colon. |
2062 | This is an Exim flag. */ | |
2063 | ||
2064 | else if (argrest[0] == 'I' && Ustrlen(argrest) >= 2 && argrest[1] == ':') | |
2065 | { | |
2066 | uschar *p = &argrest[2]; | |
2067 | info_flag = CMDINFO_HELP; | |
2068 | if (Ustrlen(p)) | |
2069 | { | |
2070 | if (strcmpic(p, CUS"sieve") == 0) | |
2071 | { | |
2072 | info_flag = CMDINFO_SIEVE; | |
2073 | info_stdout = TRUE; | |
2074 | } | |
36a3ae5f PP |
2075 | else if (strcmpic(p, CUS"dscp") == 0) |
2076 | { | |
2077 | info_flag = CMDINFO_DSCP; | |
2078 | info_stdout = TRUE; | |
2079 | } | |
98a90c36 PP |
2080 | else if (strcmpic(p, CUS"help") == 0) |
2081 | { | |
2082 | info_stdout = TRUE; | |
2083 | } | |
2084 | } | |
2085 | } | |
2086 | ||
059ec3d9 PH |
2087 | /* -bm: Accept and deliver message - the default option. Reinstate |
2088 | receiving_message, which got turned off for all -b options. */ | |
2089 | ||
2090 | else if (Ustrcmp(argrest, "m") == 0) receiving_message = TRUE; | |
2091 | ||
8544e77a PP |
2092 | /* -bmalware: test the filename given for malware */ |
2093 | ||
2094 | else if (Ustrcmp(argrest, "malware") == 0) | |
2095 | { | |
2096 | if (++i >= argc) { badarg = TRUE; break; } | |
2097 | malware_test_file = argv[i]; | |
2098 | } | |
2099 | ||
059ec3d9 PH |
2100 | /* -bnq: For locally originating messages, do not qualify unqualified |
2101 | addresses. In the envelope, this causes errors; in header lines they | |
2102 | just get left. */ | |
2103 | ||
2104 | else if (Ustrcmp(argrest, "nq") == 0) | |
2105 | { | |
2106 | allow_unqualified_sender = FALSE; | |
2107 | allow_unqualified_recipient = FALSE; | |
2108 | } | |
2109 | ||
2110 | /* -bpxx: List the contents of the mail queue, in various forms. If | |
2111 | the option is -bpc, just a queue count is needed. Otherwise, if the | |
2112 | first letter after p is r, then order is random. */ | |
2113 | ||
2114 | else if (*argrest == 'p') | |
2115 | { | |
2116 | if (*(++argrest) == 'c') | |
2117 | { | |
2118 | count_queue = TRUE; | |
2119 | if (*(++argrest) != 0) badarg = TRUE; | |
2120 | break; | |
2121 | } | |
2122 | ||
2123 | if (*argrest == 'r') | |
2124 | { | |
2125 | list_queue_option = 8; | |
2126 | argrest++; | |
2127 | } | |
2128 | else list_queue_option = 0; | |
2129 | ||
2130 | list_queue = TRUE; | |
2131 | ||
2132 | /* -bp: List the contents of the mail queue, top-level only */ | |
2133 | ||
2134 | if (*argrest == 0) {} | |
2135 | ||
2136 | /* -bpu: List the contents of the mail queue, top-level undelivered */ | |
2137 | ||
2138 | else if (Ustrcmp(argrest, "u") == 0) list_queue_option += 1; | |
2139 | ||
2140 | /* -bpa: List the contents of the mail queue, including all delivered */ | |
2141 | ||
2142 | else if (Ustrcmp(argrest, "a") == 0) list_queue_option += 2; | |
2143 | ||
2144 | /* Unknown after -bp[r] */ | |
2145 | ||
2146 | else | |
2147 | { | |
2148 | badarg = TRUE; | |
2149 | break; | |
2150 | } | |
2151 | } | |
2152 | ||
2153 | ||
2154 | /* -bP: List the configuration variables given as the address list. | |
2155 | Force -v, so configuration errors get displayed. */ | |
2156 | ||
2157 | else if (Ustrcmp(argrest, "P") == 0) | |
2158 | { | |
bf3c2c6b HSHR |
2159 | /* -bP config: we need to setup here, because later, |
2160 | * when list_options is checked, the config is read already */ | |
2161 | if (argv[i+1] && Ustrcmp(argv[i+1], "config") == 0) | |
2162 | { | |
2163 | list_config = TRUE; | |
2164 | readconf_save_config(version_string); | |
2165 | } | |
2166 | else | |
2167 | { | |
2168 | list_options = TRUE; | |
2169 | debug_selector |= D_v; | |
2170 | debug_file = stderr; | |
2171 | } | |
059ec3d9 PH |
2172 | } |
2173 | ||
2174 | /* -brt: Test retry configuration lookup */ | |
2175 | ||
2176 | else if (Ustrcmp(argrest, "rt") == 0) | |
2177 | { | |
2178 | test_retry_arg = i + 1; | |
2179 | goto END_ARG; | |
2180 | } | |
2181 | ||
2182 | /* -brw: Test rewrite configuration */ | |
2183 | ||
2184 | else if (Ustrcmp(argrest, "rw") == 0) | |
2185 | { | |
2186 | test_rewrite_arg = i + 1; | |
2187 | goto END_ARG; | |
2188 | } | |
2189 | ||
2190 | /* -bS: Read SMTP commands on standard input, but produce no replies - | |
2191 | all errors are reported by sending messages. */ | |
2192 | ||
2193 | else if (Ustrcmp(argrest, "S") == 0) | |
2194 | smtp_input = smtp_batched_input = receiving_message = TRUE; | |
2195 | ||
2196 | /* -bs: Read SMTP commands on standard input and produce SMTP replies | |
2197 | on standard output. */ | |
2198 | ||
2199 | else if (Ustrcmp(argrest, "s") == 0) smtp_input = receiving_message = TRUE; | |
2200 | ||
2201 | /* -bt: address testing mode */ | |
2202 | ||
2203 | else if (Ustrcmp(argrest, "t") == 0) | |
2204 | address_test_mode = checking = log_testing_mode = TRUE; | |
2205 | ||
2206 | /* -bv: verify addresses */ | |
2207 | ||
2208 | else if (Ustrcmp(argrest, "v") == 0) | |
2209 | verify_address_mode = checking = log_testing_mode = TRUE; | |
2210 | ||
2211 | /* -bvs: verify sender addresses */ | |
2212 | ||
2213 | else if (Ustrcmp(argrest, "vs") == 0) | |
2214 | { | |
2215 | verify_address_mode = checking = log_testing_mode = TRUE; | |
2216 | verify_as_sender = TRUE; | |
2217 | } | |
2218 | ||
2219 | /* -bV: Print version string and support details */ | |
2220 | ||
2221 | else if (Ustrcmp(argrest, "V") == 0) | |
2222 | { | |
2223 | printf("Exim version %s #%s built %s\n", version_string, | |
2224 | version_cnumber, version_date); | |
2225 | printf("%s\n", CS version_copyright); | |
2226 | version_printed = TRUE; | |
2227 | show_whats_supported(stdout); | |
2228 | } | |
2229 | ||
9ee44efb PP |
2230 | /* -bw: inetd wait mode, accept a listening socket as stdin */ |
2231 | ||
2232 | else if (*argrest == 'w') | |
2233 | { | |
2234 | inetd_wait_mode = TRUE; | |
2235 | background_daemon = FALSE; | |
2236 | daemon_listen = TRUE; | |
2237 | if (*(++argrest) != '\0') | |
2238 | { | |
2239 | inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE); | |
2240 | if (inetd_wait_timeout <= 0) | |
2241 | { | |
2242 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); | |
2243 | exit(EXIT_FAILURE); | |
2244 | } | |
2245 | } | |
2246 | } | |
2247 | ||
059ec3d9 PH |
2248 | else badarg = TRUE; |
2249 | break; | |
2250 | ||
2251 | ||
2252 | /* -C: change configuration file list; ignore if it isn't really | |
2253 | a change! Enforce a prefix check if required. */ | |
2254 | ||
2255 | case 'C': | |
2256 | if (*argrest == 0) | |
2257 | { | |
2258 | if(++i < argc) argrest = argv[i]; else | |
2259 | { badarg = TRUE; break; } | |
2260 | } | |
2261 | if (Ustrcmp(config_main_filelist, argrest) != 0) | |
2262 | { | |
2263 | #ifdef ALT_CONFIG_PREFIX | |
2264 | int sep = 0; | |
2265 | int len = Ustrlen(ALT_CONFIG_PREFIX); | |
2266 | uschar *list = argrest; | |
2267 | uschar *filename; | |
2268 | while((filename = string_nextinlist(&list, &sep, big_buffer, | |
2269 | big_buffer_size)) != NULL) | |
2270 | { | |
2271 | if ((Ustrlen(filename) < len || | |
2272 | Ustrncmp(filename, ALT_CONFIG_PREFIX, len) != 0 || | |
2273 | Ustrstr(filename, "/../") != NULL) && | |
2274 | (Ustrcmp(filename, "/dev/null") != 0 || real_uid != root_uid)) | |
2275 | { | |
2276 | fprintf(stderr, "-C Permission denied\n"); | |
2277 | exit(EXIT_FAILURE); | |
2278 | } | |
2279 | } | |
2280 | #endif | |
261dc43e DW |
2281 | if (real_uid != root_uid) |
2282 | { | |
90b6341f | 2283 | #ifdef TRUSTED_CONFIG_LIST |
261dc43e | 2284 | |
90b6341f DW |
2285 | if (real_uid != exim_uid |
2286 | #ifdef CONFIGURE_OWNER | |
2287 | && real_uid != config_uid | |
2288 | #endif | |
2289 | ) | |
261dc43e DW |
2290 | trusted_config = FALSE; |
2291 | else | |
2292 | { | |
90b6341f | 2293 | FILE *trust_list = Ufopen(TRUSTED_CONFIG_LIST, "rb"); |
261dc43e DW |
2294 | if (trust_list) |
2295 | { | |
2296 | struct stat statbuf; | |
2297 | ||
2298 | if (fstat(fileno(trust_list), &statbuf) != 0 || | |
2299 | (statbuf.st_uid != root_uid /* owner not root */ | |
2300 | #ifdef CONFIGURE_OWNER | |
2301 | && statbuf.st_uid != config_uid /* owner not the special one */ | |
2302 | #endif | |
2303 | ) || /* or */ | |
2304 | (statbuf.st_gid != root_gid /* group not root */ | |
2305 | #ifdef CONFIGURE_GROUP | |
2306 | && statbuf.st_gid != config_gid /* group not the special one */ | |
2307 | #endif | |
2308 | && (statbuf.st_mode & 020) != 0 /* group writeable */ | |
2309 | ) || /* or */ | |
2310 | (statbuf.st_mode & 2) != 0) /* world writeable */ | |
2311 | { | |
2312 | trusted_config = FALSE; | |
2313 | fclose(trust_list); | |
2314 | } | |
2315 | else | |
2316 | { | |
2317 | /* Well, the trust list at least is up to scratch... */ | |
2318 | void *reset_point = store_get(0); | |
90b6341f DW |
2319 | uschar *trusted_configs[32]; |
2320 | int nr_configs = 0; | |
261dc43e DW |
2321 | int i = 0; |
2322 | ||
2323 | while (Ufgets(big_buffer, big_buffer_size, trust_list)) | |
2324 | { | |
2325 | uschar *start = big_buffer, *nl; | |
2326 | while (*start && isspace(*start)) | |
2327 | start++; | |
1e83d68b | 2328 | if (*start != '/') |
261dc43e DW |
2329 | continue; |
2330 | nl = Ustrchr(start, '\n'); | |
2331 | if (nl) | |
2332 | *nl = 0; | |
90b6341f DW |
2333 | trusted_configs[nr_configs++] = string_copy(start); |
2334 | if (nr_configs == 32) | |
261dc43e DW |
2335 | break; |
2336 | } | |
2337 | fclose(trust_list); | |
2338 | ||
90b6341f | 2339 | if (nr_configs) |
261dc43e DW |
2340 | { |
2341 | int sep = 0; | |
55414b25 | 2342 | const uschar *list = argrest; |
261dc43e DW |
2343 | uschar *filename; |
2344 | while (trusted_config && (filename = string_nextinlist(&list, | |
2345 | &sep, big_buffer, big_buffer_size)) != NULL) | |
2346 | { | |
90b6341f | 2347 | for (i=0; i < nr_configs; i++) |
261dc43e | 2348 | { |
90b6341f | 2349 | if (Ustrcmp(filename, trusted_configs[i]) == 0) |
261dc43e DW |
2350 | break; |
2351 | } | |
90b6341f | 2352 | if (i == nr_configs) |
261dc43e DW |
2353 | { |
2354 | trusted_config = FALSE; | |
2355 | break; | |
2356 | } | |
2357 | } | |
1e83d68b | 2358 | store_reset(reset_point); |
261dc43e DW |
2359 | } |
2360 | else | |
2361 | { | |
2362 | /* No valid prefixes found in trust_list file. */ | |
2363 | trusted_config = FALSE; | |
2364 | } | |
2365 | } | |
2366 | } | |
2367 | else | |
2368 | { | |
2369 | /* Could not open trust_list file. */ | |
2370 | trusted_config = FALSE; | |
2371 | } | |
2372 | } | |
2373 | #else | |
2374 | /* Not root; don't trust config */ | |
2375 | trusted_config = FALSE; | |
2376 | #endif | |
2377 | } | |
059ec3d9 PH |
2378 | |
2379 | config_main_filelist = argrest; | |
2380 | config_changed = TRUE; | |
2381 | } | |
2382 | break; | |
2383 | ||
2384 | ||
2385 | /* -D: set up a macro definition */ | |
2386 | ||
2387 | case 'D': | |
2388 | #ifdef DISABLE_D_OPTION | |
2389 | fprintf(stderr, "exim: -D is not available in this Exim binary\n"); | |
2390 | exit(EXIT_FAILURE); | |
2391 | #else | |
2392 | { | |
2393 | int ptr = 0; | |
2394 | macro_item *mlast = NULL; | |
2395 | macro_item *m; | |
2396 | uschar name[24]; | |
2397 | uschar *s = argrest; | |
2398 | ||
2399 | while (isspace(*s)) s++; | |
2400 | ||
2401 | if (*s < 'A' || *s > 'Z') | |
2402 | { | |
2403 | fprintf(stderr, "exim: macro name set by -D must start with " | |
2404 | "an upper case letter\n"); | |
2405 | exit(EXIT_FAILURE); | |
2406 | } | |
2407 | ||
2408 | while (isalnum(*s) || *s == '_') | |
2409 | { | |
2410 | if (ptr < sizeof(name)-1) name[ptr++] = *s; | |
2411 | s++; | |
2412 | } | |
2413 | name[ptr] = 0; | |
2414 | if (ptr == 0) { badarg = TRUE; break; } | |
2415 | while (isspace(*s)) s++; | |
2416 | if (*s != 0) | |
2417 | { | |
2418 | if (*s++ != '=') { badarg = TRUE; break; } | |
2419 | while (isspace(*s)) s++; | |
2420 | } | |
2421 | ||
2422 | for (m = macros; m != NULL; m = m->next) | |
2423 | { | |
2424 | if (Ustrcmp(m->name, name) == 0) | |
2425 | { | |
2426 | fprintf(stderr, "exim: duplicated -D in command line\n"); | |
2427 | exit(EXIT_FAILURE); | |
2428 | } | |
2429 | mlast = m; | |
2430 | } | |
2431 | ||
2432 | m = store_get(sizeof(macro_item) + Ustrlen(name)); | |
2433 | m->next = NULL; | |
2434 | m->command_line = TRUE; | |
2435 | if (mlast == NULL) macros = m; else mlast->next = m; | |
2436 | Ustrcpy(m->name, name); | |
2437 | m->replacement = string_copy(s); | |
2438 | ||
2439 | if (clmacro_count >= MAX_CLMACROS) | |
2440 | { | |
2441 | fprintf(stderr, "exim: too many -D options on command line\n"); | |
2442 | exit(EXIT_FAILURE); | |
2443 | } | |
2444 | clmacros[clmacro_count++] = string_sprintf("-D%s=%s", m->name, | |
2445 | m->replacement); | |
2446 | } | |
2447 | #endif | |
2448 | break; | |
2449 | ||
2450 | /* -d: Set debug level (see also -v below) or set the drop_cr option. | |
8e669ac1 | 2451 | The latter is now a no-op, retained for compatibility only. If -dd is used, |
3d235903 | 2452 | debugging subprocesses of the daemon is disabled. */ |
059ec3d9 PH |
2453 | |
2454 | case 'd': | |
2455 | if (Ustrcmp(argrest, "ropcr") == 0) | |
2456 | { | |
2457 | /* drop_cr = TRUE; */ | |
2458 | } | |
2459 | ||
2460 | /* Use an intermediate variable so that we don't set debugging while | |
2461 | decoding the debugging bits. */ | |
2462 | ||
2463 | else | |
2464 | { | |
2465 | unsigned int selector = D_default; | |
2466 | debug_selector = 0; | |
2467 | debug_file = NULL; | |
3d235903 PH |
2468 | if (*argrest == 'd') |
2469 | { | |
2470 | debug_daemon = TRUE; | |
2471 | argrest++; | |
2472 | } | |
059ec3d9 | 2473 | if (*argrest != 0) |
6c6d6e48 TF |
2474 | decode_bits(&selector, 1, debug_notall, argrest, |
2475 | debug_options, debug_options_count, US"debug", 0); | |
059ec3d9 PH |
2476 | debug_selector = selector; |
2477 | } | |
2478 | break; | |
2479 | ||
2480 | ||
2481 | /* -E: This is a local error message. This option is not intended for | |
2482 | external use at all, but is not restricted to trusted callers because it | |
2483 | does no harm (just suppresses certain error messages) and if Exim is run | |
2484 | not setuid root it won't always be trusted when it generates error | |
2485 | messages using this option. If there is a message id following -E, point | |
2486 | message_reference at it, for logging. */ | |
2487 | ||
2488 | case 'E': | |
2489 | local_error_message = TRUE; | |
2490 | if (mac_ismsgid(argrest)) message_reference = argrest; | |
2491 | break; | |
2492 | ||
2493 | ||
2494 | /* -ex: The vacation program calls sendmail with the undocumented "-eq" | |
2495 | option, so it looks as if historically the -oex options are also callable | |
2496 | without the leading -o. So we have to accept them. Before the switch, | |
2497 | anything starting -oe has been converted to -e. Exim does not support all | |
2498 | of the sendmail error options. */ | |
2499 | ||
2500 | case 'e': | |
2501 | if (Ustrcmp(argrest, "e") == 0) | |
2502 | { | |
2503 | arg_error_handling = ERRORS_SENDER; | |
2504 | errors_sender_rc = EXIT_SUCCESS; | |
2505 | } | |
2506 | else if (Ustrcmp(argrest, "m") == 0) arg_error_handling = ERRORS_SENDER; | |
2507 | else if (Ustrcmp(argrest, "p") == 0) arg_error_handling = ERRORS_STDERR; | |
2508 | else if (Ustrcmp(argrest, "q") == 0) arg_error_handling = ERRORS_STDERR; | |
2509 | else if (Ustrcmp(argrest, "w") == 0) arg_error_handling = ERRORS_SENDER; | |
2510 | else badarg = TRUE; | |
2511 | break; | |
2512 | ||
2513 | ||
2514 | /* -F: Set sender's full name, used instead of the gecos entry from | |
2515 | the password file. Since users can usually alter their gecos entries, | |
2516 | there's no security involved in using this instead. The data can follow | |
2517 | the -F or be in the next argument. */ | |
2518 | ||
2519 | case 'F': | |
2520 | if (*argrest == 0) | |
2521 | { | |
2522 | if(++i < argc) argrest = argv[i]; else | |
2523 | { badarg = TRUE; break; } | |
2524 | } | |
2525 | originator_name = argrest; | |
2fe1a124 | 2526 | sender_name_forced = TRUE; |
059ec3d9 PH |
2527 | break; |
2528 | ||
2529 | ||
2530 | /* -f: Set sender's address - this value is only actually used if Exim is | |
2531 | run by a trusted user, or if untrusted_set_sender is set and matches the | |
2532 | address, except that the null address can always be set by any user. The | |
2533 | test for this happens later, when the value given here is ignored when not | |
2534 | permitted. For an untrusted user, the actual sender is still put in Sender: | |
2535 | if it doesn't match the From: header (unless no_local_from_check is set). | |
2536 | The data can follow the -f or be in the next argument. The -r switch is an | |
2537 | obsolete form of -f but since there appear to be programs out there that | |
2538 | use anything that sendmail has ever supported, better accept it - the | |
2539 | synonymizing is done before the switch above. | |
2540 | ||
2541 | At this stage, we must allow domain literal addresses, because we don't | |
2542 | know what the setting of allow_domain_literals is yet. Ditto for trailing | |
2543 | dots and strip_trailing_dot. */ | |
2544 | ||
2545 | case 'f': | |
2546 | { | |
250b6871 | 2547 | int dummy_start, dummy_end; |
059ec3d9 PH |
2548 | uschar *errmess; |
2549 | if (*argrest == 0) | |
2550 | { | |
2551 | if (i+1 < argc) argrest = argv[++i]; else | |
2552 | { badarg = TRUE; break; } | |
2553 | } | |
2554 | if (*argrest == 0) | |
059ec3d9 | 2555 | sender_address = string_sprintf(""); /* Ensure writeable memory */ |
059ec3d9 PH |
2556 | else |
2557 | { | |
2558 | uschar *temp = argrest + Ustrlen(argrest) - 1; | |
2559 | while (temp >= argrest && isspace(*temp)) temp--; | |
2560 | if (temp >= argrest && *temp == '.') f_end_dot = TRUE; | |
2561 | allow_domain_literals = TRUE; | |
2562 | strip_trailing_dot = TRUE; | |
8c5d388a | 2563 | #ifdef SUPPORT_I18N |
250b6871 JH |
2564 | allow_utf8_domains = TRUE; |
2565 | #endif | |
2566 | sender_address = parse_extract_address(argrest, &errmess, | |
2567 | &dummy_start, &dummy_end, &sender_address_domain, TRUE); | |
8c5d388a | 2568 | #ifdef SUPPORT_I18N |
250b6871 JH |
2569 | message_smtputf8 = string_is_utf8(sender_address); |
2570 | allow_utf8_domains = FALSE; | |
2571 | #endif | |
059ec3d9 PH |
2572 | allow_domain_literals = FALSE; |
2573 | strip_trailing_dot = FALSE; | |
2574 | if (sender_address == NULL) | |
2575 | { | |
2576 | fprintf(stderr, "exim: bad -f address \"%s\": %s\n", argrest, errmess); | |
2577 | return EXIT_FAILURE; | |
2578 | } | |
2579 | } | |
2580 | sender_address_forced = TRUE; | |
2581 | } | |
2582 | break; | |
2583 | ||
a3fb9793 | 2584 | /* -G: sendmail invocation to specify that it's a gateway submission and |
f4ee74ac PP |
2585 | sendmail may complain about problems instead of fixing them. |
2586 | We make it equivalent to an ACL "control = suppress_local_fixups" and do | |
2587 | not at this time complain about problems. */ | |
059ec3d9 PH |
2588 | |
2589 | case 'G': | |
f4ee74ac | 2590 | flag_G = TRUE; |
059ec3d9 PH |
2591 | break; |
2592 | ||
2593 | /* -h: Set the hop count for an incoming message. Exim does not currently | |
2594 | support this; it always computes it by counting the Received: headers. | |
2595 | To put it in will require a change to the spool header file format. */ | |
2596 | ||
2597 | case 'h': | |
2598 | if (*argrest == 0) | |
2599 | { | |
2600 | if(++i < argc) argrest = argv[i]; else | |
2601 | { badarg = TRUE; break; } | |
2602 | } | |
2603 | if (!isdigit(*argrest)) badarg = TRUE; | |
2604 | break; | |
2605 | ||
2606 | ||
2607 | /* -i: Set flag so dot doesn't end non-SMTP input (same as -oi, seems | |
2608 | not to be documented for sendmail but mailx (at least) uses it) */ | |
2609 | ||
2610 | case 'i': | |
2611 | if (*argrest == 0) dot_ends = FALSE; else badarg = TRUE; | |
2612 | break; | |
2613 | ||
2614 | ||
a3fb9793 PP |
2615 | /* -L: set the identifier used for syslog; equivalent to setting |
2616 | syslog_processname in the config file, but needs to be an admin option. */ | |
2617 | ||
2618 | case 'L': | |
2619 | if (*argrest == '\0') | |
2620 | { | |
2621 | if(++i < argc) argrest = argv[i]; else | |
2622 | { badarg = TRUE; break; } | |
2623 | } | |
2624 | sz = Ustrlen(argrest); | |
2625 | if (sz > 32) | |
2626 | { | |
2627 | fprintf(stderr, "exim: the -L syslog name is too long: \"%s\"\n", argrest); | |
2628 | return EXIT_FAILURE; | |
2629 | } | |
2630 | if (sz < 1) | |
2631 | { | |
2632 | fprintf(stderr, "exim: the -L syslog name is too short\n"); | |
2633 | return EXIT_FAILURE; | |
2634 | } | |
2635 | cmdline_syslog_name = argrest; | |
2636 | break; | |
2637 | ||
059ec3d9 PH |
2638 | case 'M': |
2639 | receiving_message = FALSE; | |
2640 | ||
2641 | /* -MC: continue delivery of another message via an existing open | |
2642 | file descriptor. This option is used for an internal call by the | |
2643 | smtp transport when there is a pending message waiting to go to an | |
2644 | address to which it has got a connection. Five subsequent arguments are | |
2645 | required: transport name, host name, IP address, sequence number, and | |
2646 | message_id. Transports may decline to create new processes if the sequence | |
2647 | number gets too big. The channel is stdin. This (-MC) must be the last | |
2648 | argument. There's a subsequent check that the real-uid is privileged. | |
2649 | ||
2650 | If we are running in the test harness. delay for a bit, to let the process | |
2651 | that set this one up complete. This makes for repeatability of the logging, | |
2652 | etc. output. */ | |
2653 | ||
2654 | if (Ustrcmp(argrest, "C") == 0) | |
2655 | { | |
41c7c167 PH |
2656 | union sockaddr_46 interface_sock; |
2657 | EXIM_SOCKLEN_T size = sizeof(interface_sock); | |
2658 | ||
059ec3d9 PH |
2659 | if (argc != i + 6) |
2660 | { | |
2661 | fprintf(stderr, "exim: too many or too few arguments after -MC\n"); | |
2662 | return EXIT_FAILURE; | |
2663 | } | |
2664 | ||
2665 | if (msg_action_arg >= 0) | |
2666 | { | |
2667 | fprintf(stderr, "exim: incompatible arguments\n"); | |
2668 | return EXIT_FAILURE; | |
2669 | } | |
2670 | ||
2671 | continue_transport = argv[++i]; | |
2672 | continue_hostname = argv[++i]; | |
2673 | continue_host_address = argv[++i]; | |
2674 | continue_sequence = Uatoi(argv[++i]); | |
2675 | msg_action = MSG_DELIVER; | |
2676 | msg_action_arg = ++i; | |
2677 | forced_delivery = TRUE; | |
2678 | queue_run_pid = passed_qr_pid; | |
2679 | queue_run_pipe = passed_qr_pipe; | |
2680 | ||
2681 | if (!mac_ismsgid(argv[i])) | |
2682 | { | |
2683 | fprintf(stderr, "exim: malformed message id %s after -MC option\n", | |
2684 | argv[i]); | |
2685 | return EXIT_FAILURE; | |
2686 | } | |
2687 | ||
41c7c167 PH |
2688 | /* Set up $sending_ip_address and $sending_port */ |
2689 | ||
2690 | if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock), | |
2691 | &size) == 0) | |
2692 | sending_ip_address = host_ntoa(-1, &interface_sock, NULL, | |
2693 | &sending_port); | |
2694 | else | |
2695 | { | |
2696 | fprintf(stderr, "exim: getsockname() failed after -MC option: %s\n", | |
2697 | strerror(errno)); | |
2698 | return EXIT_FAILURE; | |
2699 | } | |
2700 | ||
059ec3d9 PH |
2701 | if (running_in_test_harness) millisleep(500); |
2702 | break; | |
2703 | } | |
2704 | ||
2705 | /* -MCA: set the smtp_authenticated flag; this is useful only when it | |
2706 | precedes -MC (see above). The flag indicates that the host to which | |
2707 | Exim is connected has accepted an AUTH sequence. */ | |
2708 | ||
2709 | else if (Ustrcmp(argrest, "CA") == 0) | |
2710 | { | |
2711 | smtp_authenticated = TRUE; | |
2712 | break; | |
2713 | } | |
2714 | ||
6c1c3d1d WB |
2715 | /* -MCD: set the smtp_use_dsn flag; this indicates that the host |
2716 | that exim is connected to supports the esmtp extension DSN */ | |
45500060 | 2717 | else if (Ustrcmp(argrest, "CD") == 0) |
6c1c3d1d WB |
2718 | { |
2719 | smtp_use_dsn = TRUE; | |
2720 | break; | |
2721 | } | |
6c1c3d1d | 2722 | |
059ec3d9 PH |
2723 | /* -MCP: set the smtp_use_pipelining flag; this is useful only when |
2724 | it preceded -MC (see above) */ | |
2725 | ||
2726 | else if (Ustrcmp(argrest, "CP") == 0) | |
2727 | { | |
2728 | smtp_use_pipelining = TRUE; | |
2729 | break; | |
2730 | } | |
2731 | ||
2732 | /* -MCQ: pass on the pid of the queue-running process that started | |
2733 | this chain of deliveries and the fd of its synchronizing pipe; this | |
2734 | is useful only when it precedes -MC (see above) */ | |
2735 | ||
2736 | else if (Ustrcmp(argrest, "CQ") == 0) | |
2737 | { | |
2738 | if(++i < argc) passed_qr_pid = (pid_t)(Uatol(argv[i])); | |
2739 | else badarg = TRUE; | |
2740 | if(++i < argc) passed_qr_pipe = (int)(Uatol(argv[i])); | |
2741 | else badarg = TRUE; | |
2742 | break; | |
2743 | } | |
2744 | ||
2745 | /* -MCS: set the smtp_use_size flag; this is useful only when it | |
2746 | precedes -MC (see above) */ | |
2747 | ||
2748 | else if (Ustrcmp(argrest, "CS") == 0) | |
2749 | { | |
2750 | smtp_use_size = TRUE; | |
2751 | break; | |
2752 | } | |
2753 | ||
2754 | /* -MCT: set the tls_offered flag; this is useful only when it | |
2755 | precedes -MC (see above). The flag indicates that the host to which | |
2756 | Exim is connected has offered TLS support. */ | |
2757 | ||
2758 | #ifdef SUPPORT_TLS | |
2759 | else if (Ustrcmp(argrest, "CT") == 0) | |
2760 | { | |
2761 | tls_offered = TRUE; | |
2762 | break; | |
2763 | } | |
2764 | #endif | |
2765 | ||
2766 | /* -M[x]: various operations on the following list of message ids: | |
2767 | -M deliver the messages, ignoring next retry times and thawing | |
2768 | -Mc deliver the messages, checking next retry times, no thawing | |
2769 | -Mf freeze the messages | |
2770 | -Mg give up on the messages | |
2771 | -Mt thaw the messages | |
2772 | -Mrm remove the messages | |
2773 | In the above cases, this must be the last option. There are also the | |
2774 | following options which are followed by a single message id, and which | |
2775 | act on that message. Some of them use the "recipient" addresses as well. | |
2776 | -Mar add recipient(s) | |
2777 | -Mmad mark all recipients delivered | |
2778 | -Mmd mark recipients(s) delivered | |
2779 | -Mes edit sender | |
0ef732d9 | 2780 | -Mset load a message for use with -be |
059ec3d9 | 2781 | -Mvb show body |
a96603a0 | 2782 | -Mvc show copy (of whole message, in RFC 2822 format) |
059ec3d9 PH |
2783 | -Mvh show header |
2784 | -Mvl show log | |
2785 | */ | |
2786 | ||
2787 | else if (*argrest == 0) | |
2788 | { | |
2789 | msg_action = MSG_DELIVER; | |
2790 | forced_delivery = deliver_force_thaw = TRUE; | |
2791 | } | |
2792 | else if (Ustrcmp(argrest, "ar") == 0) | |
2793 | { | |
2794 | msg_action = MSG_ADD_RECIPIENT; | |
2795 | one_msg_action = TRUE; | |
2796 | } | |
2797 | else if (Ustrcmp(argrest, "c") == 0) msg_action = MSG_DELIVER; | |
2798 | else if (Ustrcmp(argrest, "es") == 0) | |
2799 | { | |
2800 | msg_action = MSG_EDIT_SENDER; | |
2801 | one_msg_action = TRUE; | |
2802 | } | |
2803 | else if (Ustrcmp(argrest, "f") == 0) msg_action = MSG_FREEZE; | |
2804 | else if (Ustrcmp(argrest, "g") == 0) | |
2805 | { | |
2806 | msg_action = MSG_DELIVER; | |
2807 | deliver_give_up = TRUE; | |
2808 | } | |
2809 | else if (Ustrcmp(argrest, "mad") == 0) | |
2810 | { | |
2811 | msg_action = MSG_MARK_ALL_DELIVERED; | |
2812 | } | |
2813 | else if (Ustrcmp(argrest, "md") == 0) | |
2814 | { | |
2815 | msg_action = MSG_MARK_DELIVERED; | |
2816 | one_msg_action = TRUE; | |
2817 | } | |
2818 | else if (Ustrcmp(argrest, "rm") == 0) msg_action = MSG_REMOVE; | |
0ef732d9 PH |
2819 | else if (Ustrcmp(argrest, "set") == 0) |
2820 | { | |
2821 | msg_action = MSG_LOAD; | |
2822 | one_msg_action = TRUE; | |
2823 | } | |
059ec3d9 PH |
2824 | else if (Ustrcmp(argrest, "t") == 0) msg_action = MSG_THAW; |
2825 | else if (Ustrcmp(argrest, "vb") == 0) | |
2826 | { | |
2827 | msg_action = MSG_SHOW_BODY; | |
2828 | one_msg_action = TRUE; | |
2829 | } | |
a96603a0 PH |
2830 | else if (Ustrcmp(argrest, "vc") == 0) |
2831 | { | |
2832 | msg_action = MSG_SHOW_COPY; | |
2833 | one_msg_action = TRUE; | |
2834 | } | |
059ec3d9 PH |
2835 | else if (Ustrcmp(argrest, "vh") == 0) |
2836 | { | |
2837 | msg_action = MSG_SHOW_HEADER; | |
2838 | one_msg_action = TRUE; | |
2839 | } | |
2840 | else if (Ustrcmp(argrest, "vl") == 0) | |
2841 | { | |
2842 | msg_action = MSG_SHOW_LOG; | |
2843 | one_msg_action = TRUE; | |
2844 | } | |
2845 | else { badarg = TRUE; break; } | |
2846 | ||
2847 | /* All the -Mxx options require at least one message id. */ | |
2848 | ||
2849 | msg_action_arg = i + 1; | |
2850 | if (msg_action_arg >= argc) | |
2851 | { | |
2852 | fprintf(stderr, "exim: no message ids given after %s option\n", arg); | |
2853 | return EXIT_FAILURE; | |
2854 | } | |
2855 | ||
2856 | /* Some require only message ids to follow */ | |
2857 | ||
2858 | if (!one_msg_action) | |
2859 | { | |
2860 | int j; | |
2861 | for (j = msg_action_arg; j < argc; j++) if (!mac_ismsgid(argv[j])) | |
2862 | { | |
2863 | fprintf(stderr, "exim: malformed message id %s after %s option\n", | |
2864 | argv[j], arg); | |
2865 | return EXIT_FAILURE; | |
2866 | } | |
2867 | goto END_ARG; /* Remaining args are ids */ | |
2868 | } | |
2869 | ||
2870 | /* Others require only one message id, possibly followed by addresses, | |
2871 | which will be handled as normal arguments. */ | |
2872 | ||
2873 | else | |
2874 | { | |
2875 | if (!mac_ismsgid(argv[msg_action_arg])) | |
2876 | { | |
2877 | fprintf(stderr, "exim: malformed message id %s after %s option\n", | |
2878 | argv[msg_action_arg], arg); | |
2879 | return EXIT_FAILURE; | |
2880 | } | |
2881 | i++; | |
2882 | } | |
2883 | break; | |
2884 | ||
2885 | ||
2886 | /* Some programs seem to call the -om option without the leading o; | |
2887 | for sendmail it askes for "me too". Exim always does this. */ | |
2888 | ||
2889 | case 'm': | |
2890 | if (*argrest != 0) badarg = TRUE; | |
2891 | break; | |
2892 | ||
2893 | ||
2894 | /* -N: don't do delivery - a debugging option that stops transports doing | |
2895 | their thing. It implies debugging at the D_v level. */ | |
2896 | ||
2897 | case 'N': | |
2898 | if (*argrest == 0) | |
2899 | { | |
2900 | dont_deliver = TRUE; | |
2901 | debug_selector |= D_v; | |
2902 | debug_file = stderr; | |
2903 | } | |
2904 | else badarg = TRUE; | |
2905 | break; | |
2906 | ||
2907 | ||
12f69989 PP |
2908 | /* -n: This means "don't alias" in sendmail, apparently. |
2909 | For normal invocations, it has no effect. | |
2910 | It may affect some other options. */ | |
059ec3d9 PH |
2911 | |
2912 | case 'n': | |
12f69989 | 2913 | flag_n = TRUE; |
059ec3d9 PH |
2914 | break; |
2915 | ||
2916 | /* -O: Just ignore it. In sendmail, apparently -O option=value means set | |
2917 | option to the specified value. This form uses long names. We need to handle | |
2918 | -O option=value and -Ooption=value. */ | |
2919 | ||
2920 | case 'O': | |
2921 | if (*argrest == 0) | |
2922 | { | |
2923 | if (++i >= argc) | |
2924 | { | |
2925 | fprintf(stderr, "exim: string expected after -O\n"); | |
2926 | exit(EXIT_FAILURE); | |
2927 | } | |
2928 | } | |
2929 | break; | |
2930 | ||
2931 | case 'o': | |
2932 | ||
2933 | /* -oA: Set an argument for the bi command (sendmail's "alternate alias | |
2934 | file" option). */ | |
2935 | ||
2936 | if (*argrest == 'A') | |
2937 | { | |
2938 | alias_arg = argrest + 1; | |
2939 | if (alias_arg[0] == 0) | |
2940 | { | |
2941 | if (i+1 < argc) alias_arg = argv[++i]; else | |
2942 | { | |
2943 | fprintf(stderr, "exim: string expected after -oA\n"); | |
2944 | exit(EXIT_FAILURE); | |
2945 | } | |
2946 | } | |
2947 | } | |
2948 | ||
2949 | /* -oB: Set a connection message max value for remote deliveries */ | |
2950 | ||
2951 | else if (*argrest == 'B') | |
2952 | { | |
2953 | uschar *p = argrest + 1; | |
2954 | if (p[0] == 0) | |
2955 | { | |
2956 | if (i+1 < argc && isdigit((argv[i+1][0]))) p = argv[++i]; else | |
2957 | { | |
2958 | connection_max_messages = 1; | |
2959 | p = NULL; | |
2960 | } | |
2961 | } | |
2962 | ||
2963 | if (p != NULL) | |
2964 | { | |
2965 | if (!isdigit(*p)) | |
2966 | { | |
2967 | fprintf(stderr, "exim: number expected after -oB\n"); | |
2968 | exit(EXIT_FAILURE); | |
2969 | } | |
2970 | connection_max_messages = Uatoi(p); | |
2971 | } | |
2972 | } | |
2973 | ||
2974 | /* -odb: background delivery */ | |
2975 | ||
2976 | else if (Ustrcmp(argrest, "db") == 0) | |
2977 | { | |
2978 | synchronous_delivery = FALSE; | |
2979 | arg_queue_only = FALSE; | |
2980 | queue_only_set = TRUE; | |
2981 | } | |
2982 | ||
2983 | /* -odf: foreground delivery (smail-compatible option); same effect as | |
2984 | -odi: interactive (synchronous) delivery (sendmail-compatible option) | |
2985 | */ | |
2986 | ||
2987 | else if (Ustrcmp(argrest, "df") == 0 || Ustrcmp(argrest, "di") == 0) | |
2988 | { | |
2989 | synchronous_delivery = TRUE; | |
2990 | arg_queue_only = FALSE; | |
2991 | queue_only_set = TRUE; | |
2992 | } | |
2993 | ||
2994 | /* -odq: queue only */ | |
2995 | ||
2996 | else if (Ustrcmp(argrest, "dq") == 0) | |
2997 | { | |
2998 | synchronous_delivery = FALSE; | |
2999 | arg_queue_only = TRUE; | |
3000 | queue_only_set = TRUE; | |
3001 | } | |
3002 | ||
3003 | /* -odqs: queue SMTP only - do local deliveries and remote routing, | |
3004 | but no remote delivery */ | |
3005 | ||
3006 | else if (Ustrcmp(argrest, "dqs") == 0) | |
3007 | { | |
3008 | queue_smtp = TRUE; | |
3009 | arg_queue_only = FALSE; | |
3010 | queue_only_set = TRUE; | |
3011 | } | |
3012 | ||
3013 | /* -oex: Sendmail error flags. As these are also accepted without the | |
3014 | leading -o prefix, for compatibility with vacation and other callers, | |
3015 | they are handled with -e above. */ | |
3016 | ||
3017 | /* -oi: Set flag so dot doesn't end non-SMTP input (same as -i) | |
3018 | -oitrue: Another sendmail syntax for the same */ | |
3019 | ||
3020 | else if (Ustrcmp(argrest, "i") == 0 || | |
3021 | Ustrcmp(argrest, "itrue") == 0) | |
3022 | dot_ends = FALSE; | |
3023 | ||
3024 | /* -oM*: Set various characteristics for an incoming message; actually | |
3025 | acted on for trusted callers only. */ | |
3026 | ||
3027 | else if (*argrest == 'M') | |
3028 | { | |
3029 | if (i+1 >= argc) | |
3030 | { | |
3031 | fprintf(stderr, "exim: data expected after -o%s\n", argrest); | |
3032 | exit(EXIT_FAILURE); | |
3033 | } | |
3034 | ||
3035 | /* -oMa: Set sender host address */ | |
3036 | ||
3037 | if (Ustrcmp(argrest, "Ma") == 0) sender_host_address = argv[++i]; | |
3038 | ||
3039 | /* -oMaa: Set authenticator name */ | |
3040 | ||
3041 | else if (Ustrcmp(argrest, "Maa") == 0) | |
3042 | sender_host_authenticated = argv[++i]; | |
3043 | ||
3044 | /* -oMas: setting authenticated sender */ | |
3045 | ||
3046 | else if (Ustrcmp(argrest, "Mas") == 0) authenticated_sender = argv[++i]; | |
3047 | ||
3048 | /* -oMai: setting authenticated id */ | |
3049 | ||
3050 | else if (Ustrcmp(argrest, "Mai") == 0) authenticated_id = argv[++i]; | |
3051 | ||
3052 | /* -oMi: Set incoming interface address */ | |
3053 | ||
3054 | else if (Ustrcmp(argrest, "Mi") == 0) interface_address = argv[++i]; | |
3055 | ||
d2af03f4 HS |
3056 | /* -oMm: Message reference */ |
3057 | ||
3058 | else if (Ustrcmp(argrest, "Mm") == 0) | |
3059 | { | |
3060 | if (!mac_ismsgid(argv[i+1])) | |
3061 | { | |
3062 | fprintf(stderr,"-oMm must be a valid message ID\n"); | |
3063 | exit(EXIT_FAILURE); | |
3064 | } | |
3065 | if (!trusted_config) | |
3066 | { | |
3067 | fprintf(stderr,"-oMm must be called by a trusted user/config\n"); | |
3068 | exit(EXIT_FAILURE); | |
3069 | } | |
3070 | message_reference = argv[++i]; | |
3071 | } | |
3072 | ||
059ec3d9 PH |
3073 | /* -oMr: Received protocol */ |
3074 | ||
3075 | else if (Ustrcmp(argrest, "Mr") == 0) received_protocol = argv[++i]; | |
3076 | ||
3077 | /* -oMs: Set sender host name */ | |
3078 | ||
3079 | else if (Ustrcmp(argrest, "Ms") == 0) sender_host_name = argv[++i]; | |
3080 | ||
3081 | /* -oMt: Set sender ident */ | |
3082 | ||
33d73e3b PH |
3083 | else if (Ustrcmp(argrest, "Mt") == 0) |
3084 | { | |
3085 | sender_ident_set = TRUE; | |
3086 | sender_ident = argv[++i]; | |
3087 | } | |
059ec3d9 PH |
3088 | |
3089 | /* Else a bad argument */ | |
3090 | ||
3091 | else | |
3092 | { | |
3093 | badarg = TRUE; | |
3094 | break; | |
3095 | } | |
3096 | } | |
3097 | ||
3098 | /* -om: Me-too flag for aliases. Exim always does this. Some programs | |
3099 | seem to call this as -m (undocumented), so that is also accepted (see | |
3100 | above). */ | |
3101 | ||
3102 | else if (Ustrcmp(argrest, "m") == 0) {} | |
3103 | ||
3104 | /* -oo: An ancient flag for old-style addresses which still seems to | |
3105 | crop up in some calls (see in SCO). */ | |
3106 | ||
3107 | else if (Ustrcmp(argrest, "o") == 0) {} | |
3108 | ||
3109 | /* -oP <name>: set pid file path for daemon */ | |
3110 | ||
3111 | else if (Ustrcmp(argrest, "P") == 0) | |
3112 | override_pid_file_path = argv[++i]; | |
3113 | ||
3114 | /* -or <n>: set timeout for non-SMTP acceptance | |
3115 | -os <n>: set timeout for SMTP acceptance */ | |
3116 | ||
3117 | else if (*argrest == 'r' || *argrest == 's') | |
3118 | { | |
3119 | int *tp = (*argrest == 'r')? | |
3120 | &arg_receive_timeout : &arg_smtp_receive_timeout; | |
3121 | if (argrest[1] == 0) | |
3122 | { | |
3123 | if (i+1 < argc) *tp= readconf_readtime(argv[++i], 0, FALSE); | |
3124 | } | |
3125 | else *tp = readconf_readtime(argrest + 1, 0, FALSE); | |
3126 | if (*tp < 0) | |
3127 | { | |
3128 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); | |
3129 | exit(EXIT_FAILURE); | |
3130 | } | |
3131 | } | |
3132 | ||
3133 | /* -oX <list>: Override local_interfaces and/or default daemon ports */ | |
3134 | ||
3135 | else if (Ustrcmp(argrest, "X") == 0) | |
3136 | override_local_interfaces = argv[++i]; | |
3137 | ||
3138 | /* Unknown -o argument */ | |
3139 | ||
3140 | else badarg = TRUE; | |
3141 | break; | |
3142 | ||
3143 | ||
3144 | /* -ps: force Perl startup; -pd force delayed Perl startup */ | |
3145 | ||
3146 | case 'p': | |
3147 | #ifdef EXIM_PERL | |
3148 | if (*argrest == 's' && argrest[1] == 0) | |
3149 | { | |
3150 | perl_start_option = 1; | |
3151 | break; | |
3152 | } | |
3153 | if (*argrest == 'd' && argrest[1] == 0) | |
3154 | { | |
3155 | perl_start_option = -1; | |
3156 | break; | |
3157 | } | |
3158 | #endif | |
3159 | ||
3160 | /* -panythingelse is taken as the Sendmail-compatible argument -prval:sval, | |
3161 | which sets the host protocol and host name */ | |
3162 | ||
3163 | if (*argrest == 0) | |
3164 | { | |
3165 | if (i+1 < argc) argrest = argv[++i]; else | |
3166 | { badarg = TRUE; break; } | |
3167 | } | |
3168 | ||
3169 | if (*argrest != 0) | |
3170 | { | |
3171 | uschar *hn = Ustrchr(argrest, ':'); | |
3172 | if (hn == NULL) | |
3173 | { | |
3174 | received_protocol = argrest; | |
3175 | } | |
3176 | else | |
3177 | { | |
3178 | received_protocol = string_copyn(argrest, hn - argrest); | |
3179 | sender_host_name = hn + 1; | |
3180 | } | |
3181 | } | |
3182 | break; | |
3183 | ||
3184 | ||
3185 | case 'q': | |
3186 | receiving_message = FALSE; | |
3cc66b45 PH |
3187 | if (queue_interval >= 0) |
3188 | { | |
3189 | fprintf(stderr, "exim: -q specified more than once\n"); | |
3190 | exit(EXIT_FAILURE); | |
3191 | } | |
059ec3d9 PH |
3192 | |
3193 | /* -qq...: Do queue runs in a 2-stage manner */ | |
3194 | ||
3195 | if (*argrest == 'q') | |
3196 | { | |
3197 | queue_2stage = TRUE; | |
3198 | argrest++; | |
3199 | } | |
3200 | ||
3201 | /* -qi...: Do only first (initial) deliveries */ | |
3202 | ||
3203 | if (*argrest == 'i') | |
3204 | { | |
3205 | queue_run_first_delivery = TRUE; | |
3206 | argrest++; | |
3207 | } | |
3208 | ||
3209 | /* -qf...: Run the queue, forcing deliveries | |
3210 | -qff..: Ditto, forcing thawing as well */ | |
3211 | ||
3212 | if (*argrest == 'f') | |
3213 | { | |
3214 | queue_run_force = TRUE; | |
3215 | if (*(++argrest) == 'f') | |
3216 | { | |
3217 | deliver_force_thaw = TRUE; | |
3218 | argrest++; | |
3219 | } | |
3220 | } | |
3221 | ||
3222 | /* -q[f][f]l...: Run the queue only on local deliveries */ | |
3223 | ||
3224 | if (*argrest == 'l') | |
3225 | { | |
3226 | queue_run_local = TRUE; | |
3227 | argrest++; | |
3228 | } | |
3229 | ||
3230 | /* -q[f][f][l]: Run the queue, optionally forced, optionally local only, | |
3231 | optionally starting from a given message id. */ | |
3232 | ||
3233 | if (*argrest == 0 && | |
3234 | (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1]))) | |
3235 | { | |
3236 | queue_interval = 0; | |
3237 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3238 | start_queue_run_id = argv[++i]; | |
3239 | if (i+1 < argc && mac_ismsgid(argv[i+1])) | |
3240 | stop_queue_run_id = argv[++i]; | |
3241 | } | |
3242 | ||
3243 | /* -q[f][f][l]<n>: Run the queue at regular intervals, optionally forced, | |
3244 | optionally local only. */ | |
3245 | ||
3246 | else | |
3247 | { | |
3248 | if (*argrest != 0) | |
3249 | queue_interval = readconf_readtime(argrest, 0, FALSE); | |
3250 | else | |
3251 | queue_interval = readconf_readtime(argv[++i], 0, FALSE); | |
3252 | if (queue_interval <= 0) | |
3253 | { | |
3254 | fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); | |
3255 | exit(EXIT_FAILURE); | |
3256 | } | |
3257 | } | |
3258 | break; | |
3259 | ||
3260 | ||
3261 | case 'R': /* Synonymous with -qR... */ | |
3262 | receiving_message = FALSE; | |
3263 | ||
3264 | /* -Rf: As -R (below) but force all deliveries, | |
3265 | -Rff: Ditto, but also thaw all frozen messages, | |
3266 | -Rr: String is regex | |
3267 | -Rrf: Regex and force | |
3268 | -Rrff: Regex and force and thaw | |
3269 | ||
3270 | in all cases provided there are no further characters in this | |
3271 | argument. */ | |
3272 | ||
3273 | if (*argrest != 0) | |
3274 | { | |
3275 | int i; | |
3276 | for (i = 0; i < sizeof(rsopts)/sizeof(uschar *); i++) | |
3277 | { | |
3278 | if (Ustrcmp(argrest, rsopts[i]) == 0) | |
3279 | { | |
3280 | if (i != 2) queue_run_force = TRUE; | |
3281 | if (i >= 2) deliver_selectstring_regex = TRUE; | |
3282 | if (i == 1 || i == 4) deliver_force_thaw = TRUE; | |
3283 | argrest += Ustrlen(rsopts[i]); | |
3284 | } | |
3285 | } | |
3286 | } | |
3287 | ||
3288 | /* -R: Set string to match in addresses for forced queue run to | |
3289 | pick out particular messages. */ | |
3290 | ||
3291 | if (*argrest == 0) | |
3292 | { | |
3293 | if (i+1 < argc) deliver_selectstring = argv[++i]; else | |
3294 | { | |
3295 | fprintf(stderr, "exim: string expected after -R\n"); | |
3296 | exit(EXIT_FAILURE); | |
3297 | } | |
3298 | } | |
3299 | else deliver_selectstring = argrest; | |
059ec3d9 PH |
3300 | break; |
3301 | ||
3302 | ||
3303 | /* -r: an obsolete synonym for -f (see above) */ | |
3304 | ||
3305 | ||
3306 | /* -S: Like -R but works on sender. */ | |
3307 | ||
3308 | case 'S': /* Synonymous with -qS... */ | |
3309 | receiving_message = FALSE; | |
3310 | ||
3311 | /* -Sf: As -S (below) but force all deliveries, | |
3312 | -Sff: Ditto, but also thaw all frozen messages, | |
3313 | -Sr: String is regex | |
3314 | -Srf: Regex and force | |
3315 | -Srff: Regex and force and thaw | |
3316 | ||
3317 | in all cases provided there are no further characters in this | |
3318 | argument. */ | |
3319 | ||
3320 | if (*argrest != 0) | |
3321 | { | |
3322 | int i; | |
3323 | for (i = 0; i < sizeof(rsopts)/sizeof(uschar *); i++) | |
3324 | { | |
3325 | if (Ustrcmp(argrest, rsopts[i]) == 0) | |
3326 | { | |
3327 | if (i != 2) queue_run_force = TRUE; | |
3328 | if (i >= 2) deliver_selectstring_sender_regex = TRUE; | |
3329 | if (i == 1 || i == 4) deliver_force_thaw = TRUE; | |
3330 | argrest += Ustrlen(rsopts[i]); | |
3331 | } | |
3332 | } | |
3333 | } | |
3334 | ||
3335 | /* -S: Set string to match in addresses for forced queue run to | |
3336 | pick out particular messages. */ | |
3337 | ||
3338 | if (*argrest == 0) | |
3339 | { | |
3340 | if (i+1 < argc) deliver_selectstring_sender = argv[++i]; else | |
3341 | { | |
3342 | fprintf(stderr, "exim: string expected after -S\n"); | |
3343 | exit(EXIT_FAILURE); | |
3344 | } | |
3345 | } | |
3346 | else deliver_selectstring_sender = argrest; | |
059ec3d9 PH |
3347 | break; |
3348 | ||
3349 | /* -Tqt is an option that is exclusively for use by the testing suite. | |
3350 | It is not recognized in other circumstances. It allows for the setting up | |
3351 | of explicit "queue times" so that various warning/retry things can be | |
3352 | tested. Otherwise variability of clock ticks etc. cause problems. */ | |
3353 | ||
3354 | case 'T': | |
3355 | if (running_in_test_harness && Ustrcmp(argrest, "qt") == 0) | |
3356 | fudged_queue_times = argv[++i]; | |
3357 | else badarg = TRUE; | |
3358 | break; | |
3359 | ||
3360 | ||
3361 | /* -t: Set flag to extract recipients from body of message. */ | |
3362 | ||
3363 | case 't': | |
3364 | if (*argrest == 0) extract_recipients = TRUE; | |
3365 | ||
3366 | /* -ti: Set flag to extract recipients from body of message, and also | |
3367 | specify that dot does not end the message. */ | |
3368 | ||
3369 | else if (Ustrcmp(argrest, "i") == 0) | |
3370 | { | |
3371 | extract_recipients = TRUE; | |
3372 | dot_ends = FALSE; | |
3373 | } | |
3374 | ||
3375 | /* -tls-on-connect: don't wait for STARTTLS (for old clients) */ | |
3376 | ||
3377 | #ifdef SUPPORT_TLS | |
817d9f57 | 3378 | else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE; |
059ec3d9 PH |
3379 | #endif |
3380 | ||
3381 | else badarg = TRUE; | |
3382 | break; | |
3383 | ||
3384 | ||
3385 | /* -U: This means "initial user submission" in sendmail, apparently. The | |
3386 | doc claims that in future sendmail may refuse syntactically invalid | |
3387 | messages instead of fixing them. For the moment, we just ignore it. */ | |
3388 | ||
3389 | case 'U': | |
3390 | break; | |
3391 | ||
3392 | ||
3393 | /* -v: verify things - this is a very low-level debugging */ | |
3394 | ||
3395 | case 'v': | |
3396 | if (*argrest == 0) | |
3397 | { | |
3398 | debug_selector |= D_v; | |
3399 | debug_file = stderr; | |
3400 | } | |
3401 | else badarg = TRUE; | |
3402 | break; | |
3403 | ||
3404 | ||
3405 | /* -x: AIX uses this to indicate some fancy 8-bit character stuff: | |
3406 | ||
3407 | The -x flag tells the sendmail command that mail from a local | |
3408 | mail program has National Language Support (NLS) extended characters | |
3409 | in the body of the mail item. The sendmail command can send mail with | |
3410 | extended NLS characters across networks that normally corrupts these | |
3411 | 8-bit characters. | |
3412 | ||
3413 | As Exim is 8-bit clean, it just ignores this flag. */ | |
3414 | ||
3415 | case 'x': | |
3416 | if (*argrest != 0) badarg = TRUE; | |
3417 | break; | |
3418 | ||
a3fb9793 PP |
3419 | /* -X: in sendmail: takes one parameter, logfile, and sends debugging |
3420 | logs to that file. We swallow the parameter and otherwise ignore it. */ | |
3421 | ||
3422 | case 'X': | |
3423 | if (*argrest == '\0') | |
a3fb9793 PP |
3424 | if (++i >= argc) |
3425 | { | |
3426 | fprintf(stderr, "exim: string expected after -X\n"); | |
3427 | exit(EXIT_FAILURE); | |
3428 | } | |
0ad2e0fc JH |
3429 | break; |
3430 | ||
3431 | case 'z': | |
3432 | if (*argrest == '\0') | |
3433 | if (++i < argc) log_oneline = argv[i]; else | |
3434 | { | |
3435 | fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); | |
3436 | exit(EXIT_FAILURE); | |
3437 | } | |
a3fb9793 PP |
3438 | break; |
3439 | ||
059ec3d9 PH |
3440 | /* All other initial characters are errors */ |
3441 | ||
3442 | default: | |
3443 | badarg = TRUE; | |
3444 | break; | |
3445 | } /* End of high-level switch statement */ | |
3446 | ||
3447 | /* Failed to recognize the option, or syntax error */ | |
3448 | ||
3449 | if (badarg) | |
3450 | { | |
3451 | fprintf(stderr, "exim abandoned: unknown, malformed, or incomplete " | |
3452 | "option %s\n", arg); | |
3453 | exit(EXIT_FAILURE); | |
3454 | } | |
3455 | } | |
3456 | ||
3457 | ||
3cc66b45 PH |
3458 | /* If -R or -S have been specified without -q, assume a single queue run. */ |
3459 | ||
3460 | if ((deliver_selectstring != NULL || deliver_selectstring_sender != NULL) && | |
3461 | queue_interval < 0) queue_interval = 0; | |
3462 | ||
3463 | ||
059ec3d9 | 3464 | END_ARG: |
81ea09ca NM |
3465 | /* If usage_wanted is set we call the usage function - which never returns */ |
3466 | if (usage_wanted) exim_usage(called_as); | |
3467 | ||
3468 | /* Arguments have been processed. Check for incompatibilities. */ | |
059ec3d9 PH |
3469 | if (( |
3470 | (smtp_input || extract_recipients || recipients_arg < argc) && | |
3471 | (daemon_listen || queue_interval >= 0 || bi_option || | |
3472 | test_retry_arg >= 0 || test_rewrite_arg >= 0 || | |
f05da2e8 | 3473 | filter_test != FTEST_NONE || (msg_action_arg > 0 && !one_msg_action)) |
059ec3d9 PH |
3474 | ) || |
3475 | ( | |
3476 | msg_action_arg > 0 && | |
0ef732d9 PH |
3477 | (daemon_listen || queue_interval >= 0 || list_options || |
3478 | (checking && msg_action != MSG_LOAD) || | |
3479 | bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0) | |
059ec3d9 PH |
3480 | ) || |
3481 | ( | |
3482 | (daemon_listen || queue_interval >= 0) && | |
3483 | (sender_address != NULL || list_options || list_queue || checking || | |
0ef732d9 | 3484 | bi_option) |
059ec3d9 PH |
3485 | ) || |
3486 | ( | |
3487 | daemon_listen && queue_interval == 0 | |
3488 | ) || | |
3489 | ( | |
9ee44efb PP |
3490 | inetd_wait_mode && queue_interval >= 0 |
3491 | ) || | |
3492 | ( | |
059ec3d9 PH |
3493 | list_options && |
3494 | (checking || smtp_input || extract_recipients || | |
f05da2e8 | 3495 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3496 | ) || |
3497 | ( | |
3498 | verify_address_mode && | |
3499 | (address_test_mode || smtp_input || extract_recipients || | |
f05da2e8 | 3500 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3501 | ) || |
3502 | ( | |
3503 | address_test_mode && (smtp_input || extract_recipients || | |
f05da2e8 | 3504 | filter_test != FTEST_NONE || bi_option) |
059ec3d9 PH |
3505 | ) || |
3506 | ( | |
f05da2e8 | 3507 | smtp_input && (sender_address != NULL || filter_test != FTEST_NONE || |
059ec3d9 PH |
3508 | extract_recipients) |
3509 | ) || | |
3510 | ( | |
3511 | deliver_selectstring != NULL && queue_interval < 0 | |
328895cc PH |
3512 | ) || |
3513 | ( | |
3514 | msg_action == MSG_LOAD && | |
3515 | (!expansion_test || expansion_test_message != NULL) | |
059ec3d9 PH |
3516 | ) |
3517 | ) | |
3518 | { | |
3519 | fprintf(stderr, "exim: incompatible command-line options or arguments\n"); | |
3520 | exit(EXIT_FAILURE); | |
3521 | } | |
3522 | ||
3523 | /* If debugging is set up, set the file and the file descriptor to pass on to | |
3524 | child processes. It should, of course, be 2 for stderr. Also, force the daemon | |
3525 | to run in the foreground. */ | |
3526 | ||
3527 | if (debug_selector != 0) | |
3528 | { | |
3529 | debug_file = stderr; | |
3530 | debug_fd = fileno(debug_file); | |
3531 | background_daemon = FALSE; | |
3532 | if (running_in_test_harness) millisleep(100); /* lets caller finish */ | |
3533 | if (debug_selector != D_v) /* -v only doesn't show this */ | |
3534 | { | |
3535 | debug_printf("Exim version %s uid=%ld gid=%ld pid=%d D=%x\n", | |
3536 | version_string, (long int)real_uid, (long int)real_gid, (int)getpid(), | |
3537 | debug_selector); | |
6545de78 PP |
3538 | if (!version_printed) |
3539 | show_whats_supported(stderr); | |
059ec3d9 PH |
3540 | } |
3541 | } | |
3542 | ||
3543 | /* When started with root privilege, ensure that the limits on the number of | |
3544 | open files and the number of processes (where that is accessible) are | |
3545 | sufficiently large, or are unset, in case Exim has been called from an | |
3546 | environment where the limits are screwed down. Not all OS have the ability to | |
3547 | change some of these limits. */ | |
3548 | ||
3549 | if (unprivileged) | |
3550 | { | |
3551 | DEBUG(D_any) debug_print_ids(US"Exim has no root privilege:"); | |
3552 | } | |
3553 | else | |
3554 | { | |
3555 | struct rlimit rlp; | |
3556 | ||
3557 | #ifdef RLIMIT_NOFILE | |
3558 | if (getrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3559 | { | |
3560 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NOFILE) failed: %s", | |
3561 | strerror(errno)); | |
3562 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3563 | } | |
eb2c0248 PH |
3564 | |
3565 | /* I originally chose 1000 as a nice big number that was unlikely to | |
a494b1e1 PH |
3566 | be exceeded. It turns out that some older OS have a fixed upper limit of |
3567 | 256. */ | |
eb2c0248 | 3568 | |
059ec3d9 PH |
3569 | if (rlp.rlim_cur < 1000) |
3570 | { | |
3571 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3572 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
eb2c0248 | 3573 | { |
a494b1e1 PH |
3574 | rlp.rlim_cur = rlp.rlim_max = 256; |
3575 | if (setrlimit(RLIMIT_NOFILE, &rlp) < 0) | |
3576 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NOFILE) failed: %s", | |
3577 | strerror(errno)); | |
eb2c0248 | 3578 | } |
059ec3d9 PH |
3579 | } |
3580 | #endif | |
3581 | ||
3582 | #ifdef RLIMIT_NPROC | |
3583 | if (getrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3584 | { | |
3585 | log_write(0, LOG_MAIN|LOG_PANIC, "getrlimit(RLIMIT_NPROC) failed: %s", | |
3586 | strerror(errno)); | |
3587 | rlp.rlim_cur = rlp.rlim_max = 0; | |
3588 | } | |
3589 | ||
3590 | #ifdef RLIM_INFINITY | |
3591 | if (rlp.rlim_cur != RLIM_INFINITY && rlp.rlim_cur < 1000) | |
3592 | { | |
3593 | rlp.rlim_cur = rlp.rlim_max = RLIM_INFINITY; | |
3594 | #else | |
3595 | if (rlp.rlim_cur < 1000) | |
3596 | { | |
3597 | rlp.rlim_cur = rlp.rlim_max = 1000; | |
3598 | #endif | |
3599 | if (setrlimit(RLIMIT_NPROC, &rlp) < 0) | |
3600 | log_write(0, LOG_MAIN|LOG_PANIC, "setrlimit(RLIMIT_NPROC) failed: %s", | |
3601 | strerror(errno)); | |
3602 | } | |
3603 | #endif | |
3604 | } | |
3605 | ||
3606 | /* Exim is normally entered as root (but some special configurations are | |
3607 | possible that don't do this). However, it always spins off sub-processes that | |
3608 | set their uid and gid as required for local delivery. We don't want to pass on | |
3609 | any extra groups that root may belong to, so we want to get rid of them all at | |
3610 | this point. | |
3611 | ||
3612 | We need to obey setgroups() at this stage, before possibly giving up root | |
3613 | privilege for a changed configuration file, but later on we might need to | |
3614 | check on the additional groups for the admin user privilege - can't do that | |
3615 | till after reading the config, which might specify the exim gid. Therefore, | |
3616 | save the group list here first. */ | |
3617 | ||
3618 | group_count = getgroups(NGROUPS_MAX, group_list); | |
cd59ab18 PP |
3619 | if (group_count < 0) |
3620 | { | |
3621 | fprintf(stderr, "exim: getgroups() failed: %s\n", strerror(errno)); | |
3622 | exit(EXIT_FAILURE); | |
3623 | } | |
059ec3d9 PH |
3624 | |
3625 | /* There is a fundamental difference in some BSD systems in the matter of | |
3626 | groups. FreeBSD and BSDI are known to be different; NetBSD and OpenBSD are | |
3627 | known not to be different. On the "different" systems there is a single group | |
3628 | list, and the first entry in it is the current group. On all other versions of | |
3629 | Unix there is a supplementary group list, which is in *addition* to the current | |
3630 | group. Consequently, to get rid of all extraneous groups on a "standard" system | |
3631 | you pass over 0 groups to setgroups(), while on a "different" system you pass | |
3632 | over a single group - the current group, which is always the first group in the | |
3633 | list. Calling setgroups() with zero groups on a "different" system results in | |
3634 | an error return. The following code should cope with both types of system. | |
3635 | ||
3636 | However, if this process isn't running as root, setgroups() can't be used | |
3637 | since you have to be root to run it, even if throwing away groups. Not being | |
3638 | root here happens only in some unusual configurations. We just ignore the | |
3639 | error. */ | |
3640 | ||
3641 | if (setgroups(0, NULL) != 0) | |
3642 | { | |
3643 | if (setgroups(1, group_list) != 0 && !unprivileged) | |
3644 | { | |
3645 | fprintf(stderr, "exim: setgroups() failed: %s\n", strerror(errno)); | |
3646 | exit(EXIT_FAILURE); | |
3647 | } | |
3648 | } | |
3649 | ||
3650 | /* If the configuration file name has been altered by an argument on the | |
3651 | command line (either a new file name or a macro definition) and the caller is | |
cd25e41d DW |
3652 | not root, or if this is a filter testing run, remove any setuid privilege the |
3653 | program has and run as the underlying user. | |
059ec3d9 | 3654 | |
cd25e41d DW |
3655 | The exim user is locked out of this, which severely restricts the use of -C |
3656 | for some purposes. | |
059ec3d9 PH |
3657 | |
3658 | Otherwise, set the real ids to the effective values (should be root unless run | |
3659 | from inetd, which it can either be root or the exim uid, if one is configured). | |
3660 | ||
3661 | There is a private mechanism for bypassing some of this, in order to make it | |
3662 | possible to test lots of configurations automatically, without having either to | |
3663 | recompile each time, or to patch in an actual configuration file name and other | |
3664 | values (such as the path name). If running in the test harness, pretend that | |
3665 | configuration file changes and macro definitions haven't happened. */ | |
3666 | ||
3667 | if (( /* EITHER */ | |
a7cbbf50 PP |
3668 | (!trusted_config || /* Config changed, or */ |
3669 | !macros_trusted()) && /* impermissible macros and */ | |
059ec3d9 | 3670 | real_uid != root_uid && /* Not root, and */ |
059ec3d9 PH |
3671 | !running_in_test_harness /* Not fudged */ |
3672 | ) || /* OR */ | |
3673 | expansion_test /* expansion testing */ | |
3674 | || /* OR */ | |
f05da2e8 | 3675 | filter_test != FTEST_NONE) /* Filter testing */ |
059ec3d9 PH |
3676 | { |
3677 | setgroups(group_count, group_list); | |
3678 | exim_setugid(real_uid, real_gid, FALSE, | |
3679 | US"-C, -D, -be or -bf forces real uid"); | |
3680 | removed_privilege = TRUE; | |
3681 | ||
3682 | /* In the normal case when Exim is called like this, stderr is available | |
3683 | and should be used for any logging information because attempts to write | |
3684 | to the log will usually fail. To arrange this, we unset really_exim. However, | |
3685 | if no stderr is available there is no point - we might as well have a go | |
b7487bce | 3686 | at the log (if it fails, syslog will be written). |
059ec3d9 | 3687 | |
b7487bce PP |
3688 | Note that if the invoker is Exim, the logs remain available. Messing with |
3689 | this causes unlogged successful deliveries. */ | |
3690 | ||
3691 | if ((log_stderr != NULL) && (real_uid != exim_uid)) | |
3692 | really_exim = FALSE; | |
059ec3d9 PH |
3693 | } |
3694 | ||
3695 | /* Privilege is to be retained for the moment. It may be dropped later, | |
3696 | depending on the job that this Exim process has been asked to do. For now, set | |
3697 | the real uid to the effective so that subsequent re-execs of Exim are done by a | |
3698 | privileged user. */ | |
3699 | ||
3700 | else exim_setugid(geteuid(), getegid(), FALSE, US"forcing real = effective"); | |
3701 | ||
f05da2e8 | 3702 | /* If testing a filter, open the file(s) now, before wasting time doing other |
059ec3d9 PH |
3703 | setups and reading the message. */ |
3704 | ||
f05da2e8 PH |
3705 | if ((filter_test & FTEST_SYSTEM) != 0) |
3706 | { | |
3707 | filter_sfd = Uopen(filter_test_sfile, O_RDONLY, 0); | |
3708 | if (filter_sfd < 0) | |
3709 | { | |
3710 | fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_sfile, | |
3711 | strerror(errno)); | |
3712 | return EXIT_FAILURE; | |
3713 | } | |
3714 | } | |
3715 | ||
3716 | if ((filter_test & FTEST_USER) != 0) | |
059ec3d9 | 3717 | { |
f05da2e8 PH |
3718 | filter_ufd = Uopen(filter_test_ufile, O_RDONLY, 0); |
3719 | if (filter_ufd < 0) | |
059ec3d9 | 3720 | { |
f05da2e8 | 3721 | fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_ufile, |
059ec3d9 PH |
3722 | strerror(errno)); |
3723 | return EXIT_FAILURE; | |
3724 | } | |
3725 | } | |
3726 | ||
8829633f PP |
3727 | /* Initialise lookup_list |
3728 | If debugging, already called above via version reporting. | |
3729 | In either case, we initialise the list of available lookups while running | |
3730 | as root. All dynamically modules are loaded from a directory which is | |
3731 | hard-coded into the binary and is code which, if not a module, would be | |
3732 | part of Exim already. Ability to modify the content of the directory | |
3733 | is equivalent to the ability to modify a setuid binary! | |
3734 | ||
3735 | This needs to happen before we read the main configuration. */ | |
3736 | init_lookup_list(); | |
3737 | ||
8c5d388a | 3738 | #ifdef SUPPORT_I18N |
9d4319df JH |
3739 | if (running_in_test_harness) smtputf8_advertise_hosts = NULL; |
3740 | #endif | |
3741 | ||
059ec3d9 PH |
3742 | /* Read the main runtime configuration data; this gives up if there |
3743 | is a failure. It leaves the configuration file open so that the subsequent | |
3de973a2 | 3744 | configuration data for delivery can be read if needed. |
059ec3d9 | 3745 | |
3de973a2 HSHR |
3746 | NOTE: immediatly after opening the configuration file we change the working |
3747 | directory to "/"! Later we change to $spool_directory. We do it there, because | |
3748 | during readconf_main() some expansion takes place already. */ | |
bc3c7bb7 | 3749 | |
3615fa9a | 3750 | /* Store the initial cwd before we change directories */ |
fae3a611 HSHR |
3751 | if ((initial_cwd = getcwd(NULL, 0)) == NULL) |
3752 | { | |
3753 | perror("exim: can't get the current working directory"); | |
3754 | exit(EXIT_FAILURE); | |
3755 | } | |
3615fa9a | 3756 | |
059ec3d9 PH |
3757 | readconf_main(); |
3758 | ||
3de973a2 HSHR |
3759 | /* Now in directory "/" */ |
3760 | ||
bc3c7bb7 HSHR |
3761 | if (cleanup_environment() == FALSE) |
3762 | log_write(0, LOG_PANIC_DIE, "Can't cleanup environment"); | |
3763 | ||
3764 | ||
a3fb9793 PP |
3765 | /* If an action on specific messages is requested, or if a daemon or queue |
3766 | runner is being started, we need to know if Exim was called by an admin user. | |
3767 | This is the case if the real user is root or exim, or if the real group is | |
3768 | exim, or if one of the supplementary groups is exim or a group listed in | |
3769 | admin_groups. We don't fail all message actions immediately if not admin_user, | |
3770 | since some actions can be performed by non-admin users. Instead, set admin_user | |
3771 | for later interrogation. */ | |
3772 | ||
3773 | if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid) | |
3774 | admin_user = TRUE; | |
3775 | else | |
3776 | { | |
3777 | int i, j; | |
3778 | for (i = 0; i < group_count; i++) | |
3779 | { | |
3780 | if (group_list[i] == exim_gid) admin_user = TRUE; | |
3781 | else if (admin_groups != NULL) | |
3782 | { | |
3783 | for (j = 1; j <= (int)(admin_groups[0]); j++) | |
3784 | if (admin_groups[j] == group_list[i]) | |
3785 | { admin_user = TRUE; break; } | |
3786 | } | |
3787 | if (admin_user) break; | |
3788 | } | |
3789 | } | |
3790 | ||
3791 | /* Another group of privileged users are the trusted users. These are root, | |
3792 | exim, and any caller matching trusted_users or trusted_groups. Trusted callers | |
3793 | are permitted to specify sender_addresses with -f on the command line, and | |
3794 | other message parameters as well. */ | |
3795 | ||
3796 | if (real_uid == root_uid || real_uid == exim_uid) | |
3797 | trusted_caller = TRUE; | |
3798 | else | |
3799 | { | |
3800 | int i, j; | |
3801 | ||
3802 | if (trusted_users != NULL) | |
3803 | { | |
3804 | for (i = 1; i <= (int)(trusted_users[0]); i++) | |
3805 | if (trusted_users[i] == real_uid) | |
3806 | { trusted_caller = TRUE; break; } | |
3807 | } | |
3808 | ||
3809 | if (!trusted_caller && trusted_groups != NULL) | |
3810 | { | |
3811 | for (i = 1; i <= (int)(trusted_groups[0]); i++) | |
3812 | { | |
3813 | if (trusted_groups[i] == real_gid) | |
3814 | trusted_caller = TRUE; | |
3815 | else for (j = 0; j < group_count; j++) | |
3816 | { | |
3817 | if (trusted_groups[i] == group_list[j]) | |
3818 | { trusted_caller = TRUE; break; } | |
3819 | } | |
3820 | if (trusted_caller) break; | |
3821 | } | |
3822 | } | |
3823 | } | |
3824 | ||
059ec3d9 PH |
3825 | /* Handle the decoding of logging options. */ |
3826 | ||
6c6d6e48 | 3827 | decode_bits(log_selector, log_selector_size, log_notall, |
ed7f7860 | 3828 | log_selector_string, log_options, log_options_count, US"log", 0); |
059ec3d9 PH |
3829 | |
3830 | DEBUG(D_any) | |
3831 | { | |
6c6d6e48 | 3832 | int i; |
059ec3d9 | 3833 | debug_printf("configuration file is %s\n", config_main_filename); |
6c6d6e48 TF |
3834 | debug_printf("log selectors ="); |
3835 | for (i = 0; i < log_selector_size; i++) | |
3836 | debug_printf(" %08x", log_selector[i]); | |
3837 | debug_printf("\n"); | |
059ec3d9 PH |
3838 | } |
3839 | ||
3840 | /* If domain literals are not allowed, check the sender address that was | |
3841 | supplied with -f. Ditto for a stripped trailing dot. */ | |
3842 | ||
3843 | if (sender_address != NULL) | |
3844 | { | |
3845 | if (sender_address[sender_address_domain] == '[' && !allow_domain_literals) | |
3846 | { | |
3847 | fprintf(stderr, "exim: bad -f address \"%s\": domain literals not " | |
3848 | "allowed\n", sender_address); | |
3849 | return EXIT_FAILURE; | |
3850 | } | |
3851 | if (f_end_dot && !strip_trailing_dot) | |
3852 | { | |
3853 | fprintf(stderr, "exim: bad -f address \"%s.\": domain is malformed " | |
3854 | "(trailing dot not allowed)\n", sender_address); | |
3855 | return EXIT_FAILURE; | |
3856 | } | |
3857 | } | |
3858 | ||
a3fb9793 PP |
3859 | /* See if an admin user overrode our logging. */ |
3860 | ||
3861 | if (cmdline_syslog_name != NULL) | |
3862 | { | |
3863 | if (admin_user) | |
3864 | { | |
3865 | syslog_processname = cmdline_syslog_name; | |
3866 | log_file_path = string_copy(CUS"syslog"); | |
3867 | } | |
3868 | else | |
3869 | { | |
3870 | /* not a panic, non-privileged users should not be able to spam paniclog */ | |
3871 | fprintf(stderr, | |
3872 | "exim: you lack sufficient privilege to specify syslog process name\n"); | |
3873 | return EXIT_FAILURE; | |
3874 | } | |
3875 | } | |
3876 | ||
059ec3d9 PH |
3877 | /* Paranoia check of maximum lengths of certain strings. There is a check |
3878 | on the length of the log file path in log.c, which will come into effect | |
3879 | if there are any calls to write the log earlier than this. However, if we | |
3880 | get this far but the string is very long, it is better to stop now than to | |
3881 | carry on and (e.g.) receive a message and then have to collapse. The call to | |
3882 | log_write() from here will cause the ultimate panic collapse if the complete | |
3883 | file name exceeds the buffer length. */ | |
3884 | ||
3885 | if (Ustrlen(log_file_path) > 200) | |
3886 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3887 | "log_file_path is longer than 200 chars: aborting"); | |
3888 | ||
3889 | if (Ustrlen(pid_file_path) > 200) | |
3890 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3891 | "pid_file_path is longer than 200 chars: aborting"); | |
3892 | ||
3893 | if (Ustrlen(spool_directory) > 200) | |
3894 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3895 | "spool_directory is longer than 200 chars: aborting"); | |
3896 | ||
3897 | /* Length check on the process name given to syslog for its TAG field, | |
3898 | which is only permitted to be 32 characters or less. See RFC 3164. */ | |
3899 | ||
3900 | if (Ustrlen(syslog_processname) > 32) | |
3901 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, | |
3902 | "syslog_processname is longer than 32 chars: aborting"); | |
3903 | ||
0ad2e0fc JH |
3904 | if (log_oneline) |
3905 | { | |
3906 | if (admin_user) | |
3907 | { | |
3908 | log_write(0, LOG_MAIN, "%s", log_oneline); | |
3909 | return EXIT_SUCCESS; | |
3910 | } | |
3911 | else | |
3912 | return EXIT_FAILURE; | |
3913 | } | |
3914 | ||
059ec3d9 PH |
3915 | /* In some operating systems, the environment variable TMPDIR controls where |
3916 | temporary files are created; Exim doesn't use these (apart from when delivering | |
3917 | to MBX mailboxes), but called libraries such as DBM libraries may require them. | |
3918 | If TMPDIR is found in the environment, reset it to the value defined in the | |
8f3bfb82 HSHR |
3919 | EXIM_TMPDIR macro, if this macro is defined. For backward compatibility this |
3920 | macro may be called TMPDIR in old "Local/Makefile"s. It's converted to | |
3921 | EXIM_TMPDIR by the build scripts. | |
3922 | */ | |
059ec3d9 | 3923 | |
75286da3 | 3924 | #ifdef EXIM_TMPDIR |
059ec3d9 PH |
3925 | { |
3926 | uschar **p; | |
bc3c7bb7 | 3927 | if (environ) for (p = USS environ; *p != NULL; p++) |
059ec3d9 PH |
3928 | { |
3929 | if (Ustrncmp(*p, "TMPDIR=", 7) == 0 && | |
75286da3 | 3930 | Ustrcmp(*p+7, EXIM_TMPDIR) != 0) |
059ec3d9 | 3931 | { |
75286da3 AT |
3932 | uschar *newp = malloc(Ustrlen(EXIM_TMPDIR) + 8); |
3933 | sprintf(CS newp, "TMPDIR=%s", EXIM_TMPDIR); | |
059ec3d9 | 3934 | *p = newp; |
75286da3 | 3935 | DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", EXIM_TMPDIR); |
059ec3d9 PH |
3936 | } |
3937 | } | |
3938 | } | |
3939 | #endif | |
3940 | ||
3941 | /* Timezone handling. If timezone_string is "utc", set a flag to cause all | |
3942 | timestamps to be in UTC (gmtime() is used instead of localtime()). Otherwise, | |
3943 | we may need to get rid of a bogus timezone setting. This can arise when Exim is | |
3944 | called by a user who has set the TZ variable. This then affects the timestamps | |
3945 | in log files and in Received: headers, and any created Date: header lines. The | |
3946 | required timezone is settable in the configuration file, so nothing can be done | |
3947 | about this earlier - but hopefully nothing will normally be logged earlier than | |
3948 | this. We have to make a new environment if TZ is wrong, but don't bother if | |
3949 | timestamps_utc is set, because then all times are in UTC anyway. */ | |
3950 | ||
3951 | if (timezone_string != NULL && strcmpic(timezone_string, US"UTC") == 0) | |
3952 | { | |
3953 | timestamps_utc = TRUE; | |
3954 | } | |
3955 | else | |
3956 | { | |
3957 | uschar *envtz = US getenv("TZ"); | |
3958 | if ((envtz == NULL && timezone_string != NULL) || | |
3959 | (envtz != NULL && | |
3960 | (timezone_string == NULL || | |
3961 | Ustrcmp(timezone_string, envtz) != 0))) | |
3962 | { | |
3963 | uschar **p = USS environ; | |
3964 | uschar **new; | |
3965 | uschar **newp; | |
3966 | int count = 0; | |
bc3c7bb7 | 3967 | if (environ) while (*p++ != NULL) count++; |
059ec3d9 PH |
3968 | if (envtz == NULL) count++; |
3969 | newp = new = malloc(sizeof(uschar *) * (count + 1)); | |
bc3c7bb7 | 3970 | if (environ) for (p = USS environ; *p != NULL; p++) |
059ec3d9 PH |
3971 | { |
3972 | if (Ustrncmp(*p, "TZ=", 3) == 0) continue; | |
3973 | *newp++ = *p; | |
3974 | } | |
3975 | if (timezone_string != NULL) | |
3976 | { | |
3977 | *newp = malloc(Ustrlen(timezone_string) + 4); | |
3978 | sprintf(CS *newp++, "TZ=%s", timezone_string); | |
3979 | } | |
3980 | *newp = NULL; | |
3981 | environ = CSS new; | |
3982 | tzset(); | |
3983 | DEBUG(D_any) debug_printf("Reset TZ to %s: time is %s\n", timezone_string, | |
3984 | tod_stamp(tod_log)); | |
3985 | } | |
3986 | } | |
3987 | ||
3988 | /* Handle the case when we have removed the setuid privilege because of -C or | |
cd25e41d | 3989 | -D. This means that the caller of Exim was not root. |
059ec3d9 | 3990 | |
cd25e41d DW |
3991 | There is a problem if we were running as the Exim user. The sysadmin may |
3992 | expect this case to retain privilege because "the binary was called by the | |
3993 | Exim user", but it hasn't, because either the -D option set macros, or the | |
261dc43e | 3994 | -C option set a non-trusted configuration file. There are two possibilities: |
059ec3d9 PH |
3995 | |
3996 | (1) If deliver_drop_privilege is set, Exim is not going to re-exec in order | |
3997 | to do message deliveries. Thus, the fact that it is running as a | |
3998 | non-privileged user is plausible, and might be wanted in some special | |
3999 | configurations. However, really_exim will have been set false when | |
4000 | privilege was dropped, to stop Exim trying to write to its normal log | |
4001 | files. Therefore, re-enable normal log processing, assuming the sysadmin | |
4002 | has set up the log directory correctly. | |
4003 | ||
4004 | (2) If deliver_drop_privilege is not set, the configuration won't work as | |
4005 | apparently intended, and so we log a panic message. In order to retain | |
261dc43e DW |
4006 | root for -C or -D, the caller must either be root or be invoking a |
4007 | trusted configuration file (when deliver_drop_privilege is false). */ | |
059ec3d9 | 4008 | |
e2f5dc15 | 4009 | if (removed_privilege && (!trusted_config || macros != NULL) && |
059ec3d9 PH |
4010 | real_uid == exim_uid) |
4011 | { | |
059ec3d9 PH |
4012 | if (deliver_drop_privilege) |
4013 | really_exim = TRUE; /* let logging work normally */ | |
4014 | else | |
4015 | log_write(0, LOG_MAIN|LOG_PANIC, | |
cd25e41d | 4016 | "exim user lost privilege for using %s option", |
90b6341f | 4017 | trusted_config? "-D" : "-C"); |
059ec3d9 PH |
4018 | } |
4019 | ||
4020 | /* Start up Perl interpreter if Perl support is configured and there is a | |
4021 | perl_startup option, and the configuration or the command line specifies | |
4022 | initializing starting. Note that the global variables are actually called | |
4023 | opt_perl_xxx to avoid clashing with perl's namespace (perl_*). */ | |
4024 | ||
4025 | #ifdef EXIM_PERL | |
4026 | if (perl_start_option != 0) | |
4027 | opt_perl_at_start = (perl_start_option > 0); | |
4028 | if (opt_perl_at_start && opt_perl_startup != NULL) | |
4029 | { | |
4030 | uschar *errstr; | |
4031 | DEBUG(D_any) debug_printf("Starting Perl interpreter\n"); | |
4032 | errstr = init_perl(opt_perl_startup); | |
4033 | if (errstr != NULL) | |
4034 | { | |
4035 | fprintf(stderr, "exim: error in perl_startup code: %s\n", errstr); | |
4036 | return EXIT_FAILURE; | |
4037 | } | |
4038 | opt_perl_started = TRUE; | |
4039 | } | |
4040 | #endif /* EXIM_PERL */ | |
4041 | ||
4042 | /* Log the arguments of the call if the configuration file said so. This is | |
4043 | a debugging feature for finding out what arguments certain MUAs actually use. | |
4044 | Don't attempt it if logging is disabled, or if listing variables or if | |
4045 | verifying/testing addresses or expansions. */ | |
4046 | ||
6c6d6e48 | 4047 | if (((debug_selector & D_any) != 0 || LOGGING(arguments)) |
31619da6 | 4048 | && really_exim && !list_options && !checking) |
059ec3d9 PH |
4049 | { |
4050 | int i; | |
4051 | uschar *p = big_buffer; | |
1ac6b2e7 | 4052 | Ustrcpy(p, "cwd= (failed)"); |
3615fa9a HSHR |
4053 | |
4054 | Ustrncpy(p + 4, initial_cwd, big_buffer_size-5); | |
4055 | ||
059ec3d9 PH |
4056 | while (*p) p++; |
4057 | (void)string_format(p, big_buffer_size - (p - big_buffer), " %d args:", argc); | |
4058 | while (*p) p++; | |
4059 | for (i = 0; i < argc; i++) | |
4060 | { | |
4061 | int len = Ustrlen(argv[i]); | |
55414b25 | 4062 | const uschar *printing; |
059ec3d9 PH |
4063 | uschar *quote; |
4064 | if (p + len + 8 >= big_buffer + big_buffer_size) | |
4065 | { | |
4066 | Ustrcpy(p, " ..."); | |
4067 | log_write(0, LOG_MAIN, "%s", big_buffer); | |
4068 | Ustrcpy(big_buffer, "..."); | |
4069 | p = big_buffer + 3; | |
4070 | } | |
4071 | printing = string_printing(argv[i]); | |
4072 | if (printing[0] == 0) quote = US"\""; else | |
4073 | { | |
55414b25 | 4074 | const uschar *pp = printing; |
059ec3d9 PH |
4075 | quote = US""; |
4076 | while (*pp != 0) if (isspace(*pp++)) { quote = US"\""; break; } | |
4077 | } | |
4078 | sprintf(CS p, " %s%.*s%s", quote, (int)(big_buffer_size - | |
4079 | (p - big_buffer) - 4), printing, quote); | |
4080 | while (*p) p++; | |
4081 | } | |
31619da6 | 4082 | |
6c6d6e48 | 4083 | if (LOGGING(arguments)) |
31619da6 PH |
4084 | log_write(0, LOG_MAIN, "%s", big_buffer); |
4085 | else | |
4086 | debug_printf("%s\n", big_buffer); | |
059ec3d9 PH |
4087 | } |
4088 | ||
4089 | /* Set the working directory to be the top-level spool directory. We don't rely | |
4090 | on this in the code, which always uses fully qualified names, but it's useful | |
4091 | for core dumps etc. Don't complain if it fails - the spool directory might not | |
4092 | be generally accessible and calls with the -C option (and others) have lost | |
ba18e66a PH |
4093 | privilege by now. Before the chdir, we try to ensure that the directory exists. |
4094 | */ | |
059ec3d9 PH |
4095 | |
4096 | if (Uchdir(spool_directory) != 0) | |
4097 | { | |
1ac6b2e7 | 4098 | int dummy; |
ba18e66a | 4099 | (void)directory_make(spool_directory, US"", SPOOL_DIRECTORY_MODE, FALSE); |
1ac6b2e7 | 4100 | dummy = /* quieten compiler */ Uchdir(spool_directory); |
059ec3d9 PH |
4101 | } |
4102 | ||
4103 | /* Handle calls with the -bi option. This is a sendmail option to rebuild *the* | |
4104 | alias file. Exim doesn't have such a concept, but this call is screwed into | |
4105 | Sun's YP makefiles. Handle this by calling a configured script, as the real | |
4106 | user who called Exim. The -oA option can be used to pass an argument to the | |
4107 | script. */ | |
4108 | ||
4109 | if (bi_option) | |
4110 | { | |
1fe64dcc | 4111 | (void)fclose(config_file); |
059ec3d9 PH |
4112 | if (bi_command != NULL) |
4113 | { | |
4114 | int i = 0; | |
4115 | uschar *argv[3]; | |
4116 | argv[i++] = bi_command; | |
4117 | if (alias_arg != NULL) argv[i++] = alias_arg; | |
4118 | argv[i++] = NULL; | |
4119 | ||
4120 | setgroups(group_count, group_list); | |
4121 | exim_setugid(real_uid, real_gid, FALSE, US"running bi_command"); | |
4122 | ||
4123 | DEBUG(D_exec) debug_printf("exec %.256s %.256s\n", argv[0], | |
4124 | (argv[1] == NULL)? US"" : argv[1]); | |
4125 | ||
4126 | execv(CS argv[0], (char *const *)argv); | |
4127 | fprintf(stderr, "exim: exec failed: %s\n", strerror(errno)); | |
4128 | exit(EXIT_FAILURE); | |
4129 | } | |
4130 | else | |
4131 | { | |
4132 | DEBUG(D_any) debug_printf("-bi used but bi_command not set; exiting\n"); | |
4133 | exit(EXIT_SUCCESS); | |
4134 | } | |
4135 | } | |
4136 | ||
a3fb9793 PP |
4137 | /* We moved the admin/trusted check to be immediately after reading the |
4138 | configuration file. We leave these prints here to ensure that syslog setup, | |
4139 | logfile setup, and so on has already happened. */ | |
059ec3d9 PH |
4140 | |
4141 | if (trusted_caller) DEBUG(D_any) debug_printf("trusted user\n"); | |
4142 | if (admin_user) DEBUG(D_any) debug_printf("admin user\n"); | |
4143 | ||
4144 | /* Only an admin user may start the daemon or force a queue run in the default | |
4145 | configuration, but the queue run restriction can be relaxed. Only an admin | |
4146 | user may request that a message be returned to its sender forthwith. Only an | |
4147 | admin user may specify a debug level greater than D_v (because it might show | |
4148 | passwords, etc. in lookup queries). Only an admin user may request a queue | |
8544e77a PP |
4149 | count. Only an admin user can use the test interface to scan for email |
4150 | (because Exim will be in the spool dir and able to look at mails). */ | |
059ec3d9 PH |
4151 | |
4152 | if (!admin_user) | |
4153 | { | |
4154 | BOOL debugset = (debug_selector & ~D_v) != 0; | |
8544e77a | 4155 | if (deliver_give_up || daemon_listen || malware_test_file || |
059ec3d9 PH |
4156 | (count_queue && queue_list_requires_admin) || |
4157 | (list_queue && queue_list_requires_admin) || | |
4158 | (queue_interval >= 0 && prod_requires_admin) || | |
4159 | (debugset && !running_in_test_harness)) | |
4160 | { | |
4161 | fprintf(stderr, "exim:%s permission denied\n", debugset? " debugging" : ""); | |
4162 | exit(EXIT_FAILURE); | |
4163 | } | |
4164 | } | |
4165 | ||
4166 | /* If the real user is not root or the exim uid, the argument for passing | |
4167 | in an open TCP/IP connection for another message is not permitted, nor is | |
4168 | running with the -N option for any delivery action, unless this call to exim is | |
4169 | one that supplied an input message, or we are using a patched exim for | |
4170 | regression testing. */ | |
4171 | ||
4172 | if (real_uid != root_uid && real_uid != exim_uid && | |
4173 | (continue_hostname != NULL || | |
4174 | (dont_deliver && | |
4175 | (queue_interval >= 0 || daemon_listen || msg_action_arg > 0) | |
4176 | )) && !running_in_test_harness) | |
4177 | { | |
4178 | fprintf(stderr, "exim: Permission denied\n"); | |
4179 | return EXIT_FAILURE; | |
4180 | } | |
4181 | ||
4182 | /* If the caller is not trusted, certain arguments are ignored when running for | |
f05da2e8 PH |
4183 | real, but are permitted when checking things (-be, -bv, -bt, -bh, -bf, -bF). |
4184 | Note that authority for performing certain actions on messages is tested in the | |
059ec3d9 PH |
4185 | queue_action() function. */ |
4186 | ||
f05da2e8 | 4187 | if (!trusted_caller && !checking && filter_test == FTEST_NONE) |
059ec3d9 PH |
4188 | { |
4189 | sender_host_name = sender_host_address = interface_address = | |
4190 | sender_ident = received_protocol = NULL; | |
4191 | sender_host_port = interface_port = 0; | |
4192 | sender_host_authenticated = authenticated_sender = authenticated_id = NULL; | |
4193 | } | |
4194 | ||
4195 | /* If a sender host address is set, extract the optional port number off the | |
4196 | end of it and check its syntax. Do the same thing for the interface address. | |
4197 | Exim exits if the syntax is bad. */ | |
4198 | ||
4199 | else | |
4200 | { | |
4201 | if (sender_host_address != NULL) | |
4202 | sender_host_port = check_port(sender_host_address); | |
4203 | if (interface_address != NULL) | |
4204 | interface_port = check_port(interface_address); | |
4205 | } | |
4206 | ||
f4ee74ac PP |
4207 | /* If the caller is trusted, then they can use -G to suppress_local_fixups. */ |
4208 | if (flag_G) | |
4209 | { | |
4210 | if (trusted_caller) | |
4211 | { | |
4212 | suppress_local_fixups = suppress_local_fixups_default = TRUE; | |
4213 | DEBUG(D_acl) debug_printf("suppress_local_fixups forced on by -G\n"); | |
4214 | } | |
4215 | else | |
4216 | { | |
4217 | fprintf(stderr, "exim: permission denied (-G requires a trusted user)\n"); | |
4218 | return EXIT_FAILURE; | |
4219 | } | |
4220 | } | |
4221 | ||
059ec3d9 PH |
4222 | /* If an SMTP message is being received check to see if the standard input is a |
4223 | TCP/IP socket. If it is, we assume that Exim was called from inetd if the | |
4224 | caller is root or the Exim user, or if the port is a privileged one. Otherwise, | |
4225 | barf. */ | |
4226 | ||
4227 | if (smtp_input) | |
4228 | { | |
4229 | union sockaddr_46 inetd_sock; | |
36a3b041 | 4230 | EXIM_SOCKLEN_T size = sizeof(inetd_sock); |
059ec3d9 PH |
4231 | if (getpeername(0, (struct sockaddr *)(&inetd_sock), &size) == 0) |
4232 | { | |
4233 | int family = ((struct sockaddr *)(&inetd_sock))->sa_family; | |
4234 | if (family == AF_INET || family == AF_INET6) | |
4235 | { | |
4236 | union sockaddr_46 interface_sock; | |
4237 | size = sizeof(interface_sock); | |
4238 | ||
4239 | if (getsockname(0, (struct sockaddr *)(&interface_sock), &size) == 0) | |
4240 | interface_address = host_ntoa(-1, &interface_sock, NULL, | |
4241 | &interface_port); | |
4242 | ||
817d9f57 | 4243 | if (host_is_tls_on_connect_port(interface_port)) tls_in.on_connect = TRUE; |
059ec3d9 PH |
4244 | |
4245 | if (real_uid == root_uid || real_uid == exim_uid || interface_port < 1024) | |
4246 | { | |
4247 | is_inetd = TRUE; | |
4248 | sender_host_address = host_ntoa(-1, (struct sockaddr *)(&inetd_sock), | |
4249 | NULL, &sender_host_port); | |
4250 | if (mua_wrapper) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Input from " | |
4251 | "inetd is not supported when mua_wrapper is set"); | |
4252 | } | |
4253 | else | |
4254 | { | |
4255 | fprintf(stderr, | |
4256 | "exim: Permission denied (unprivileged user, unprivileged port)\n"); | |
4257 | return EXIT_FAILURE; | |
4258 | } | |
4259 | } | |
4260 | } | |
4261 | } | |
4262 | ||
4263 | /* If the load average is going to be needed while receiving a message, get it | |
4264 | now for those OS that require the first call to os_getloadavg() to be done as | |
4265 | root. There will be further calls later for each message received. */ | |
4266 | ||
4267 | #ifdef LOAD_AVG_NEEDS_ROOT | |
4268 | if (receiving_message && | |
4269 | (queue_only_load >= 0 || | |
4270 | (is_inetd && smtp_load_reserve >= 0) | |
4271 | )) | |
4272 | { | |
8669f003 | 4273 | load_average = OS_GETLOADAVG(); |
059ec3d9 PH |
4274 | } |
4275 | #endif | |
4276 | ||
4277 | /* The queue_only configuration option can be overridden by -odx on the command | |
4278 | line, except that if queue_only_override is false, queue_only cannot be unset | |
4279 | from the command line. */ | |
4280 | ||
4281 | if (queue_only_set && (queue_only_override || arg_queue_only)) | |
4282 | queue_only = arg_queue_only; | |
4283 | ||
4284 | /* The receive_timeout and smtp_receive_timeout options can be overridden by | |
4285 | -or and -os. */ | |
4286 | ||
4287 | if (arg_receive_timeout >= 0) receive_timeout = arg_receive_timeout; | |
4288 | if (arg_smtp_receive_timeout >= 0) | |
4289 | smtp_receive_timeout = arg_smtp_receive_timeout; | |
4290 | ||
4291 | /* If Exim was started with root privilege, unless we have already removed the | |
4292 | root privilege above as a result of -C, -D, -be, -bf or -bF, remove it now | |
4293 | except when starting the daemon or doing some kind of delivery or address | |
4294 | testing (-bt). These are the only cases when root need to be retained. We run | |
4295 | as exim for -bv and -bh. However, if deliver_drop_privilege is set, root is | |
805e5aab TF |
4296 | retained only for starting the daemon. We always do the initgroups() in this |
4297 | situation (controlled by the TRUE below), in order to be as close as possible | |
4298 | to the state Exim usually runs in. */ | |
059ec3d9 PH |
4299 | |
4300 | if (!unprivileged && /* originally had root AND */ | |
4301 | !removed_privilege && /* still got root AND */ | |
4302 | !daemon_listen && /* not starting the daemon */ | |
4303 | queue_interval <= 0 && /* (either kind of daemon) */ | |
4304 | ( /* AND EITHER */ | |
4305 | deliver_drop_privilege || /* requested unprivileged */ | |
4306 | ( /* OR */ | |
4307 | queue_interval < 0 && /* not running the queue */ | |
4308 | (msg_action_arg < 0 || /* and */ | |
4309 | msg_action != MSG_DELIVER) && /* not delivering and */ | |
4310 | (!checking || !address_test_mode) /* not address checking */ | |
4311 | ) | |
4312 | )) | |
4313 | { | |
805e5aab | 4314 | exim_setugid(exim_uid, exim_gid, TRUE, US"privilege not needed"); |
059ec3d9 PH |
4315 | } |
4316 | ||
4317 | /* When we are retaining a privileged uid, we still change to the exim gid. */ | |
4318 | ||
1670ef10 PP |
4319 | else |
4320 | { | |
4321 | int rv; | |
4322 | rv = setgid(exim_gid); | |
4323 | /* Impact of failure is that some stuff might end up with an incorrect group. | |
4324 | We track this for failures from root, since any attempt to change privilege | |
4325 | by root should succeed and failures should be examined. For non-root, | |
4326 | there's no security risk. For me, it's { exim -bV } on a just-built binary, | |
4327 | no need to complain then. */ | |
4328 | if (rv == -1) | |
4329 | { | |
33191679 | 4330 | if (!(unprivileged || removed_privilege)) |
1670ef10 PP |
4331 | { |
4332 | fprintf(stderr, | |
4333 | "exim: changing group failed: %s\n", strerror(errno)); | |
4334 | exit(EXIT_FAILURE); | |
4335 | } | |
4336 | else | |
33191679 | 4337 | DEBUG(D_any) debug_printf("changing group to %ld failed: %s\n", |
1670ef10 PP |
4338 | (long int)exim_gid, strerror(errno)); |
4339 | } | |
4340 | } | |
059ec3d9 | 4341 | |
8544e77a PP |
4342 | /* Handle a request to scan a file for malware */ |
4343 | if (malware_test_file) | |
4344 | { | |
dbc4b90d | 4345 | #ifdef WITH_CONTENT_SCAN |
8544e77a PP |
4346 | int result; |
4347 | set_process_info("scanning file for malware"); | |
4348 | result = malware_in_file(malware_test_file); | |
4349 | if (result == FAIL) | |
4350 | { | |
4351 | printf("No malware found.\n"); | |
4352 | exit(EXIT_SUCCESS); | |
4353 | } | |
4354 | if (result != OK) | |
4355 | { | |
4356 | printf("Malware lookup returned non-okay/fail: %d\n", result); | |
4357 | exit(EXIT_FAILURE); | |
4358 | } | |
4359 | if (malware_name) | |
4360 | printf("Malware found: %s\n", malware_name); | |
4361 | else | |
4362 | printf("Malware scan detected malware of unknown name.\n"); | |
dbc4b90d PP |
4363 | #else |
4364 | printf("Malware scanning not enabled at compile time.\n"); | |
4365 | #endif | |
8544e77a PP |
4366 | exit(EXIT_FAILURE); |
4367 | } | |
4368 | ||
059ec3d9 PH |
4369 | /* Handle a request to list the delivery queue */ |
4370 | ||
4371 | if (list_queue) | |
4372 | { | |
4373 | set_process_info("listing the queue"); | |
4374 | queue_list(list_queue_option, argv + recipients_arg, argc - recipients_arg); | |
4375 | exit(EXIT_SUCCESS); | |
4376 | } | |
4377 | ||
4378 | /* Handle a request to count the delivery queue */ | |
4379 | ||
4380 | if (count_queue) | |
4381 | { | |
4382 | set_process_info("counting the queue"); | |
4383 | queue_count(); | |
4384 | exit(EXIT_SUCCESS); | |
4385 | } | |
4386 | ||
0ef732d9 PH |
4387 | /* Handle actions on specific messages, except for the force delivery and |
4388 | message load actions, which are done below. Some actions take a whole list of | |
4389 | message ids, which are known to continue up to the end of the arguments. Others | |
4390 | take a single message id and then operate on the recipients list. */ | |
059ec3d9 | 4391 | |
0ef732d9 | 4392 | if (msg_action_arg > 0 && msg_action != MSG_DELIVER && msg_action != MSG_LOAD) |
059ec3d9 PH |
4393 | { |
4394 | int yield = EXIT_SUCCESS; | |
4395 | set_process_info("acting on specified messages"); | |
4396 | ||
4397 | if (!one_msg_action) | |
4398 | { | |
4399 | for (i = msg_action_arg; i < argc; i++) | |
4400 | if (!queue_action(argv[i], msg_action, NULL, 0, 0)) | |
4401 | yield = EXIT_FAILURE; | |
4402 | } | |
4403 | ||
4404 | else if (!queue_action(argv[msg_action_arg], msg_action, argv, argc, | |
4405 | recipients_arg)) yield = EXIT_FAILURE; | |
4406 | exit(yield); | |
4407 | } | |
4408 | ||
cb46fd2b JH |
4409 | /* We used to set up here to skip reading the ACL section, on |
4410 | (msg_action_arg > 0 || (queue_interval == 0 && !daemon_listen) | |
4411 | Now, since the intro of the ${acl } expansion, ACL definitions may be | |
4412 | needed in transports so we lost the optimisation. */ | |
059ec3d9 | 4413 | |
cb46fd2b | 4414 | readconf_rest(); |
059ec3d9 PH |
4415 | |
4416 | /* The configuration data will have been read into POOL_PERM because we won't | |
4417 | ever want to reset back past it. Change the current pool to POOL_MAIN. In fact, | |
4418 | this is just a bit of pedantic tidiness. It wouldn't really matter if the | |
4419 | configuration were read into POOL_MAIN, because we don't do any resets till | |
4420 | later on. However, it seems right, and it does ensure that both pools get used. | |
4421 | */ | |
4422 | ||
4423 | store_pool = POOL_MAIN; | |
4424 | ||
4425 | /* Handle the -brt option. This is for checking out retry configurations. | |
4426 | The next three arguments are a domain name or a complete address, and | |
4427 | optionally two error numbers. All it does is to call the function that | |
4428 | scans the retry configuration data. */ | |
4429 | ||
4430 | if (test_retry_arg >= 0) | |
4431 | { | |
4432 | retry_config *yield; | |
4433 | int basic_errno = 0; | |
4434 | int more_errno = 0; | |
4435 | uschar *s1, *s2; | |
4436 | ||
4437 | if (test_retry_arg >= argc) | |
4438 | { | |
4439 | printf("-brt needs a domain or address argument\n"); | |
4440 | exim_exit(EXIT_FAILURE); | |
4441 | } | |
4442 | s1 = argv[test_retry_arg++]; | |
4443 | s2 = NULL; | |
4444 | ||
4445 | /* If the first argument contains no @ and no . it might be a local user | |
4446 | or it might be a single-component name. Treat as a domain. */ | |
4447 | ||
4448 | if (Ustrchr(s1, '@') == NULL && Ustrchr(s1, '.') == NULL) | |
4449 | { | |
4450 | printf("Warning: \"%s\" contains no '@' and no '.' characters. It is " | |
4451 | "being \ntreated as a one-component domain, not as a local part.\n\n", | |
4452 | s1); | |
4453 | } | |
4454 | ||
4455 | /* There may be an optional second domain arg. */ | |
4456 | ||
4457 | if (test_retry_arg < argc && Ustrchr(argv[test_retry_arg], '.') != NULL) | |
4458 | s2 = argv[test_retry_arg++]; | |
4459 | ||
4460 | /* The final arg is an error name */ | |
4461 | ||
4462 | if (test_retry_arg < argc) | |
4463 | { | |
4464 | uschar *ss = argv[test_retry_arg]; | |
4465 | uschar *error = | |
4466 | readconf_retry_error(ss, ss + Ustrlen(ss), &basic_errno, &more_errno); | |
4467 | if (error != NULL) | |
4468 | { | |
4469 | printf("%s\n", CS error); | |
4470 | return EXIT_FAILURE; | |
4471 | } | |
4472 | ||
e97957bc PH |
4473 | /* For the {MAIL,RCPT,DATA}_4xx errors, a value of 255 means "any", and a |
4474 | code > 100 as an error is for matching codes to the decade. Turn them into | |
4475 | a real error code, off the decade. */ | |
059ec3d9 | 4476 | |
e97957bc PH |
4477 | if (basic_errno == ERRNO_MAIL4XX || |
4478 | basic_errno == ERRNO_RCPT4XX || | |
4479 | basic_errno == ERRNO_DATA4XX) | |
059ec3d9 PH |
4480 | { |
4481 | int code = (more_errno >> 8) & 255; | |
4482 | if (code == 255) | |
4483 | more_errno = (more_errno & 0xffff00ff) | (21 << 8); | |
4484 | else if (code > 100) | |
4485 | more_errno = (more_errno & 0xffff00ff) | ((code - 96) << 8); | |
4486 | } | |
4487 | } | |
4488 | ||
4489 | yield = retry_find_config(s1, s2, basic_errno, more_errno); | |
4490 | if (yield == NULL) printf("No retry information found\n"); else | |
4491 | { | |
4492 | retry_rule *r; | |
4493 | more_errno = yield->more_errno; | |
4494 | printf("Retry rule: %s ", yield->pattern); | |
4495 | ||
4496 | if (yield->basic_errno == ERRNO_EXIMQUOTA) | |
4497 | { | |
4498 | printf("quota%s%s ", | |
4499 | (more_errno > 0)? "_" : "", | |
4500 | (more_errno > 0)? readconf_printtime(more_errno) : US""); | |
4501 | } | |
4502 | else if (yield->basic_errno == ECONNREFUSED) | |
4503 | { | |
4504 | printf("refused%s%s ", | |
4505 | (more_errno > 0)? "_" : "", | |
4506 | (more_errno == 'M')? "MX" : | |
4507 | (more_errno == 'A')? "A" : ""); | |
4508 | } | |
4509 | else if (yield->basic_errno == ETIMEDOUT) | |
4510 | { | |
4511 | printf("timeout"); | |
4512 | if ((more_errno & RTEF_CTOUT) != 0) printf("_connect"); | |
4513 | more_errno &= 255; | |
4514 | if (more_errno != 0) printf("_%s", | |
4515 | (more_errno == 'M')? "MX" : "A"); | |
4516 | printf(" "); | |
4517 | } | |
4518 | else if (yield->basic_errno == ERRNO_AUTHFAIL) | |
4519 | printf("auth_failed "); | |
4520 | else printf("* "); | |
4521 | ||
4522 | for (r = yield->rules; r != NULL; r = r->next) | |
4523 | { | |
4524 | printf("%c,%s", r->rule, readconf_printtime(r->timeout)); /* Do not */ | |
4525 | printf(",%s", readconf_printtime(r->p1)); /* amalgamate */ | |
4526 | if (r->rule == 'G') | |
4527 | { | |
4528 | int x = r->p2; | |
4529 | int f = x % 1000; | |
4530 | int d = 100; | |
4531 | printf(",%d.", x/1000); | |
4532 | do | |
4533 | { | |
4534 | printf("%d", f/d); | |
4535 | f %= d; | |
4536 | d /= 10; | |
4537 | } | |
4538 | while (f != 0); | |
4539 | } | |
4540 | printf("; "); | |
4541 | } | |
4542 | ||
4543 | printf("\n"); | |
4544 | } | |
4545 | exim_exit(EXIT_SUCCESS); | |
4546 | } | |
4547 | ||
4548 | /* Handle a request to list one or more configuration options */ | |
12f69989 | 4549 | /* If -n was set, we suppress some information */ |
059ec3d9 PH |
4550 | |
4551 | if (list_options) | |
4552 | { | |
4553 | set_process_info("listing variables"); | |
12f69989 | 4554 | if (recipients_arg >= argc) readconf_print(US"all", NULL, flag_n); |
059ec3d9 PH |
4555 | else for (i = recipients_arg; i < argc; i++) |
4556 | { | |
4557 | if (i < argc - 1 && | |
4558 | (Ustrcmp(argv[i], "router") == 0 || | |
4559 | Ustrcmp(argv[i], "transport") == 0 || | |
5d9c27ec | 4560 | Ustrcmp(argv[i], "authenticator") == 0 || |
bc3c7bb7 HSHR |
4561 | Ustrcmp(argv[i], "macro") == 0 || |
4562 | Ustrcmp(argv[i], "environment") == 0)) | |
059ec3d9 | 4563 | { |
12f69989 | 4564 | readconf_print(argv[i+1], argv[i], flag_n); |
059ec3d9 PH |
4565 | i++; |
4566 | } | |
12f69989 | 4567 | else readconf_print(argv[i], NULL, flag_n); |
059ec3d9 PH |
4568 | } |
4569 | exim_exit(EXIT_SUCCESS); | |
4570 | } | |
4571 | ||
bf3c2c6b HSHR |
4572 | if (list_config) |
4573 | { | |
4574 | set_process_info("listing config"); | |
4575 | readconf_print(US"config", NULL, FALSE); | |
4576 | exim_exit(EXIT_SUCCESS); | |
4577 | } | |
4578 | ||
059ec3d9 | 4579 | |
2592e6c0 JH |
4580 | /* Initialise subsystems as required */ |
4581 | #ifndef DISABLE_DKIM | |
4582 | dkim_exim_init(); | |
4583 | #endif | |
4584 | ||
4585 | ||
059ec3d9 | 4586 | /* Handle a request to deliver one or more messages that are already on the |
0ef732d9 PH |
4587 | queue. Values of msg_action other than MSG_DELIVER and MSG_LOAD are dealt with |
4588 | above. MSG_LOAD is handled with -be (which is the only time it applies) below. | |
4589 | ||
4590 | Delivery of specific messages is typically used for a small number when | |
4591 | prodding by hand (when the option forced_delivery will be set) or when | |
4592 | re-execing to regain root privilege. Each message delivery must happen in a | |
4593 | separate process, so we fork a process for each one, and run them sequentially | |
4594 | so that debugging output doesn't get intertwined, and to avoid spawning too | |
4595 | many processes if a long list is given. However, don't fork for the last one; | |
4596 | this saves a process in the common case when Exim is called to deliver just one | |
4597 | message. */ | |
4598 | ||
4599 | if (msg_action_arg > 0 && msg_action != MSG_LOAD) | |
059ec3d9 PH |
4600 | { |
4601 | if (prod_requires_admin && !admin_user) | |
4602 | { | |
4603 | fprintf(stderr, "exim: Permission denied\n"); | |
4604 | exim_exit(EXIT_FAILURE); | |
4605 | } | |
4606 | set_process_info("delivering specified messages"); | |
4607 | if (deliver_give_up) forced_delivery = deliver_force_thaw = TRUE; | |
4608 | for (i = msg_action_arg; i < argc; i++) | |
4609 | { | |
4610 | int status; | |
4611 | pid_t pid; | |
4612 | if (i == argc - 1) | |
4613 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4614 | else if ((pid = fork()) == 0) | |
4615 | { | |
4616 | (void)deliver_message(argv[i], forced_delivery, deliver_give_up); | |
4617 | _exit(EXIT_SUCCESS); | |
4618 | } | |
4619 | else if (pid < 0) | |
4620 | { | |
4621 | fprintf(stderr, "failed to fork delivery process for %s: %s\n", argv[i], | |
4622 | strerror(errno)); | |
4623 | exim_exit(EXIT_FAILURE); | |
4624 | } | |
4625 | else wait(&status); | |
4626 | } | |
4627 | exim_exit(EXIT_SUCCESS); | |
4628 | } | |
4629 | ||
4630 | ||
4631 | /* If only a single queue run is requested, without SMTP listening, we can just | |
4632 | turn into a queue runner, with an optional starting message id. */ | |
4633 | ||
4634 | if (queue_interval == 0 && !daemon_listen) | |
4635 | { | |
4636 | DEBUG(D_queue_run) debug_printf("Single queue run%s%s%s%s\n", | |
4637 | (start_queue_run_id == NULL)? US"" : US" starting at ", | |
4638 | (start_queue_run_id == NULL)? US"" : start_queue_run_id, | |
4639 | (stop_queue_run_id == NULL)? US"" : US" stopping at ", | |
4640 | (stop_queue_run_id == NULL)? US"" : stop_queue_run_id); | |
4641 | set_process_info("running the queue (single queue run)"); | |
4642 | queue_run(start_queue_run_id, stop_queue_run_id, FALSE); | |
4643 | exim_exit(EXIT_SUCCESS); | |
4644 | } | |
4645 | ||
4646 | ||
4647 | /* Find the login name of the real user running this process. This is always | |
4648 | needed when receiving a message, because it is written into the spool file. It | |
4649 | may also be used to construct a from: or a sender: header, and in this case we | |
4650 | need the user's full name as well, so save a copy of it, checked for RFC822 | |
4651 | syntax and munged if necessary, if it hasn't previously been set by the -F | |
4652 | argument. We may try to get the passwd entry more than once, in case NIS or | |
4653 | other delays are in evidence. Save the home directory for use in filter testing | |
4654 | (only). */ | |
4655 | ||
4656 | for (i = 0;;) | |
4657 | { | |
4658 | if ((pw = getpwuid(real_uid)) != NULL) | |
4659 | { | |
4660 | originator_login = string_copy(US pw->pw_name); | |
4661 | originator_home = string_copy(US pw->pw_dir); | |
4662 | ||
4663 | /* If user name has not been set by -F, set it from the passwd entry | |
4664 | unless -f has been used to set the sender address by a trusted user. */ | |
4665 | ||
4666 | if (originator_name == NULL) | |
4667 | { | |
4668 | if (sender_address == NULL || | |
f05da2e8 | 4669 | (!trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 PH |
4670 | { |
4671 | uschar *name = US pw->pw_gecos; | |
4672 | uschar *amp = Ustrchr(name, '&'); | |
4673 | uschar buffer[256]; | |
4674 | ||
4675 | /* Most Unix specify that a '&' character in the gecos field is | |
4676 | replaced by a copy of the login name, and some even specify that | |
4677 | the first character should be upper cased, so that's what we do. */ | |
4678 | ||
4679 | if (amp != NULL) | |
4680 | { | |
4681 | int loffset; | |
4682 | string_format(buffer, sizeof(buffer), "%.*s%n%s%s", | |
4683 | amp - name, name, &loffset, originator_login, amp + 1); | |
4684 | buffer[loffset] = toupper(buffer[loffset]); | |
4685 | name = buffer; | |
4686 | } | |
4687 | ||
4688 | /* If a pattern for matching the gecos field was supplied, apply | |
4689 | it and then expand the name string. */ | |
4690 | ||
4691 | if (gecos_pattern != NULL && gecos_name != NULL) | |
4692 | { | |
4693 | const pcre *re; | |
4694 | re = regex_must_compile(gecos_pattern, FALSE, TRUE); /* Use malloc */ | |
4695 | ||
4696 | if (regex_match_and_setup(re, name, 0, -1)) | |
4697 | { | |
4698 | uschar *new_name = expand_string(gecos_name); | |
4699 | expand_nmax = -1; | |
4700 | if (new_name != NULL) | |
4701 | { | |
4702 | DEBUG(D_receive) debug_printf("user name \"%s\" extracted from " | |
4703 | "gecos field \"%s\"\n", new_name, name); | |
4704 | name = new_name; | |
4705 | } | |
4706 | else DEBUG(D_receive) debug_printf("failed to expand gecos_name string " | |
4707 | "\"%s\": %s\n", gecos_name, expand_string_message); | |
4708 | } | |
4709 | else DEBUG(D_receive) debug_printf("gecos_pattern \"%s\" did not match " | |
4710 | "gecos field \"%s\"\n", gecos_pattern, name); | |
4711 | store_free((void *)re); | |
4712 | } | |
4713 | originator_name = string_copy(name); | |
4714 | } | |
4715 | ||
4716 | /* A trusted caller has used -f but not -F */ | |
4717 | ||
4718 | else originator_name = US""; | |
4719 | } | |
4720 | ||
4721 | /* Break the retry loop */ | |
4722 | ||
4723 | break; | |
4724 | } | |
4725 | ||
4726 | if (++i > finduser_retries) break; | |
4727 | sleep(1); | |
4728 | } | |
4729 | ||
4730 | /* If we cannot get a user login, log the incident and give up, unless the | |
4731 | configuration specifies something to use. When running in the test harness, | |
8800895a | 4732 | any setting of unknown_login overrides the actual name. */ |
059ec3d9 PH |
4733 | |
4734 | if (originator_login == NULL || running_in_test_harness) | |
4735 | { | |
4736 | if (unknown_login != NULL) | |
4737 | { | |
4738 | originator_login = expand_string(unknown_login); | |
4739 | if (originator_name == NULL && unknown_username != NULL) | |
4740 | originator_name = expand_string(unknown_username); | |
4741 | if (originator_name == NULL) originator_name = US""; | |
4742 | } | |
4743 | if (originator_login == NULL) | |
4744 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Failed to get user name for uid %d", | |
4745 | (int)real_uid); | |
4746 | } | |
4747 | ||
4748 | /* Ensure that the user name is in a suitable form for use as a "phrase" in an | |
4749 | RFC822 address.*/ | |
4750 | ||
4751 | originator_name = string_copy(parse_fix_phrase(originator_name, | |
4752 | Ustrlen(originator_name), big_buffer, big_buffer_size)); | |
4753 | ||
4754 | /* If a message is created by this call of Exim, the uid/gid of its originator | |
4755 | are those of the caller. These values are overridden if an existing message is | |
4756 | read in from the spool. */ | |
4757 | ||
4758 | originator_uid = real_uid; | |
4759 | originator_gid = real_gid; | |
4760 | ||
4761 | DEBUG(D_receive) debug_printf("originator: uid=%d gid=%d login=%s name=%s\n", | |
4762 | (int)originator_uid, (int)originator_gid, originator_login, originator_name); | |
4763 | ||
4764 | /* Run in daemon and/or queue-running mode. The function daemon_go() never | |
4765 | returns. We leave this till here so that the originator_ fields are available | |
47c7a64a PH |
4766 | for incoming messages via the daemon. The daemon cannot be run in mua_wrapper |
4767 | mode. */ | |
059ec3d9 | 4768 | |
9ee44efb | 4769 | if (daemon_listen || inetd_wait_mode || queue_interval > 0) |
059ec3d9 | 4770 | { |
47c7a64a PH |
4771 | if (mua_wrapper) |
4772 | { | |
4773 | fprintf(stderr, "Daemon cannot be run when mua_wrapper is set\n"); | |
4774 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Daemon cannot be run when " | |
4775 | "mua_wrapper is set"); | |
4776 | } | |
059ec3d9 PH |
4777 | daemon_go(); |
4778 | } | |
4779 | ||
4780 | /* If the sender ident has not been set (by a trusted caller) set it to | |
4781 | the caller. This will get overwritten below for an inetd call. If a trusted | |
4782 | caller has set it empty, unset it. */ | |
4783 | ||
4784 | if (sender_ident == NULL) sender_ident = originator_login; | |
4785 | else if (sender_ident[0] == 0) sender_ident = NULL; | |
4786 | ||
4787 | /* Handle the -brw option, which is for checking out rewriting rules. Cause log | |
4788 | writes (on errors) to go to stderr instead. Can't do this earlier, as want the | |
4789 | originator_* variables set. */ | |
4790 | ||
4791 | if (test_rewrite_arg >= 0) | |
4792 | { | |
4793 | really_exim = FALSE; | |
4794 | if (test_rewrite_arg >= argc) | |
4795 | { | |
4796 | printf("-brw needs an address argument\n"); | |
4797 | exim_exit(EXIT_FAILURE); | |
4798 | } | |
4799 | rewrite_test(argv[test_rewrite_arg]); | |
4800 | exim_exit(EXIT_SUCCESS); | |
4801 | } | |
4802 | ||
4803 | /* A locally-supplied message is considered to be coming from a local user | |
4804 | unless a trusted caller supplies a sender address with -f, or is passing in the | |
4805 | message via SMTP (inetd invocation or otherwise). */ | |
4806 | ||
4807 | if ((sender_address == NULL && !smtp_input) || | |
f05da2e8 | 4808 | (!trusted_caller && filter_test == FTEST_NONE)) |
059ec3d9 PH |
4809 | { |
4810 | sender_local = TRUE; | |
4811 | ||
4812 | /* A trusted caller can supply authenticated_sender and authenticated_id | |
33d73e3b PH |
4813 | via -oMas and -oMai and if so, they will already be set. Otherwise, force |
4814 | defaults except when host checking. */ | |
059ec3d9 | 4815 | |
33d73e3b | 4816 | if (authenticated_sender == NULL && !host_checking) |
059ec3d9 PH |
4817 | authenticated_sender = string_sprintf("%s@%s", originator_login, |
4818 | qualify_domain_sender); | |
33d73e3b PH |
4819 | if (authenticated_id == NULL && !host_checking) |
4820 | authenticated_id = originator_login; | |
059ec3d9 PH |
4821 | } |
4822 | ||
4823 | /* Trusted callers are always permitted to specify the sender address. | |
4824 | Untrusted callers may specify it if it matches untrusted_set_sender, or if what | |
4825 | is specified is the empty address. However, if a trusted caller does not | |
4826 | specify a sender address for SMTP input, we leave sender_address unset. This | |
4827 | causes the MAIL commands to be honoured. */ | |
4828 | ||
4829 | if ((!smtp_input && sender_address == NULL) || | |
4830 | !receive_check_set_sender(sender_address)) | |
4831 | { | |
4832 | /* Either the caller is not permitted to set a general sender, or this is | |
4833 | non-SMTP input and the trusted caller has not set a sender. If there is no | |
4834 | sender, or if a sender other than <> is set, override with the originator's | |
4835 | login (which will get qualified below), except when checking things. */ | |
4836 | ||
4837 | if (sender_address == NULL /* No sender_address set */ | |
4838 | || /* OR */ | |
4839 | (sender_address[0] != 0 && /* Non-empty sender address, AND */ | |
4840 | !checking && /* Not running tests, AND */ | |
f05da2e8 | 4841 | filter_test == FTEST_NONE)) /* Not testing a filter */ |
059ec3d9 PH |
4842 | { |
4843 | sender_address = originator_login; | |
4844 | sender_address_forced = FALSE; | |
4845 | sender_address_domain = 0; | |
4846 | } | |
4847 | } | |
4848 | ||
4849 | /* Remember whether an untrusted caller set the sender address */ | |
4850 | ||
4851 | sender_set_untrusted = sender_address != originator_login && !trusted_caller; | |
4852 | ||
4853 | /* Ensure that the sender address is fully qualified unless it is the empty | |
4854 | address, which indicates an error message, or doesn't exist (root caller, smtp | |
4855 | interface, no -f argument). */ | |
4856 | ||
4857 | if (sender_address != NULL && sender_address[0] != 0 && | |
4858 | sender_address_domain == 0) | |
4859 | sender_address = string_sprintf("%s@%s", local_part_quote(sender_address), | |
4860 | qualify_domain_sender); | |
4861 | ||
4862 | DEBUG(D_receive) debug_printf("sender address = %s\n", sender_address); | |
4863 | ||
4864 | /* Handle a request to verify a list of addresses, or test them for delivery. | |
4865 | This must follow the setting of the sender address, since routers can be | |
4866 | predicated upon the sender. If no arguments are given, read addresses from | |
4867 | stdin. Set debug_level to at least D_v to get full output for address testing. | |
4868 | */ | |
4869 | ||
4870 | if (verify_address_mode || address_test_mode) | |
4871 | { | |
4872 | int exit_value = 0; | |
4873 | int flags = vopt_qualify; | |
4874 | ||
4875 | if (verify_address_mode) | |
4876 | { | |
4877 | if (!verify_as_sender) flags |= vopt_is_recipient; | |
4878 | DEBUG(D_verify) debug_print_ids(US"Verifying:"); | |
4879 | } | |
4880 | ||
4881 | else | |
4882 | { | |
4883 | flags |= vopt_is_recipient; | |
4884 | debug_selector |= D_v; | |
4885 | debug_file = stderr; | |
4886 | debug_fd = fileno(debug_file); | |
4887 | DEBUG(D_verify) debug_print_ids(US"Address testing:"); | |
4888 | } | |
4889 | ||
4890 | if (recipients_arg < argc) | |
4891 | { | |
4892 | while (recipients_arg < argc) | |
4893 | { | |
4894 | uschar *s = argv[recipients_arg++]; | |
4895 | while (*s != 0) | |
4896 | { | |
4897 | BOOL finished = FALSE; | |
4898 | uschar *ss = parse_find_address_end(s, FALSE); | |
4899 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
4900 | test_address(s, flags, &exit_value); | |
4901 | s = ss; | |
4902 | if (!finished) | |
4903 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
4904 | } | |
4905 | } | |
4906 | } | |
4907 | ||
4908 | else for (;;) | |
4909 | { | |
4910 | uschar *s = get_stdinput(NULL, NULL); | |
4911 | if (s == NULL) break; | |
4912 | test_address(s, flags, &exit_value); | |
4913 | } | |
4914 | ||
4915 | route_tidyup(); | |
4916 | exim_exit(exit_value); | |
4917 | } | |
4918 | ||
0ef732d9 PH |
4919 | /* Handle expansion checking. Either expand items on the command line, or read |
4920 | from stdin if there aren't any. If -Mset was specified, load the message so | |
328895cc PH |
4921 | that its variables can be used, but restrict this facility to admin users. |
4922 | Otherwise, if -bem was used, read a message from stdin. */ | |
059ec3d9 PH |
4923 | |
4924 | if (expansion_test) | |
4925 | { | |
0ef732d9 PH |
4926 | if (msg_action_arg > 0 && msg_action == MSG_LOAD) |
4927 | { | |
4928 | uschar spoolname[256]; /* Not big_buffer; used in spool_read_header() */ | |
4929 | if (!admin_user) | |
4930 | { | |
4931 | fprintf(stderr, "exim: permission denied\n"); | |
4932 | exit(EXIT_FAILURE); | |
4933 | } | |
4934 | message_id = argv[msg_action_arg]; | |
4935 | (void)string_format(spoolname, sizeof(spoolname), "%s-H", message_id); | |
4936 | if (!spool_open_datafile(message_id)) | |
4937 | printf ("Failed to load message datafile %s\n", message_id); | |
4938 | if (spool_read_header(spoolname, TRUE, FALSE) != spool_read_OK) | |
4939 | printf ("Failed to load message %s\n", message_id); | |
4940 | } | |
4941 | ||
328895cc PH |
4942 | /* Read a test message from a file. We fudge it up to be on stdin, saving |
4943 | stdin itself for later reading of expansion strings. */ | |
4944 | ||
4945 | else if (expansion_test_message != NULL) | |
4946 | { | |
4947 | int save_stdin = dup(0); | |
4948 | int fd = Uopen(expansion_test_message, O_RDONLY, 0); | |
4949 | if (fd < 0) | |
4950 | { | |
4951 | fprintf(stderr, "exim: failed to open %s: %s\n", expansion_test_message, | |
4952 | strerror(errno)); | |
4953 | return EXIT_FAILURE; | |
4954 | } | |
4955 | (void) dup2(fd, 0); | |
4956 | filter_test = FTEST_USER; /* Fudge to make it look like filter test */ | |
4957 | message_ended = END_NOTENDED; | |
4958 | read_message_body(receive_msg(extract_recipients)); | |
2d2b05f4 | 4959 | message_linecount += body_linecount; |
328895cc PH |
4960 | (void)dup2(save_stdin, 0); |
4961 | (void)close(save_stdin); | |
935ff400 | 4962 | clearerr(stdin); /* Required by Darwin */ |
328895cc PH |
4963 | } |
4964 | ||
4965 | /* Allow $recipients for this testing */ | |
4966 | ||
4967 | enable_dollar_recipients = TRUE; | |
4968 | ||
0ef732d9 PH |
4969 | /* Expand command line items */ |
4970 | ||
059ec3d9 PH |
4971 | if (recipients_arg < argc) |
4972 | { | |
4973 | while (recipients_arg < argc) | |
4974 | { | |
4975 | uschar *s = argv[recipients_arg++]; | |
4976 | uschar *ss = expand_string(s); | |
0ef732d9 | 4977 | if (ss == NULL) printf ("Failed: %s\n", expand_string_message); |
059ec3d9 PH |
4978 | else printf("%s\n", CS ss); |
4979 | } | |
4980 | } | |
4981 | ||
4982 | /* Read stdin */ | |
4983 | ||
4984 | else | |
4985 | { | |
1ba28e2b PP |
4986 | char *(*fn_readline)(const char *) = NULL; |
4987 | void (*fn_addhist)(const char *) = NULL; | |
059ec3d9 PH |
4988 | |
4989 | #ifdef USE_READLINE | |
4990 | void *dlhandle = set_readline(&fn_readline, &fn_addhist); | |
4991 | #endif | |
4992 | ||
4993 | for (;;) | |
4994 | { | |
4995 | uschar *ss; | |
4996 | uschar *source = get_stdinput(fn_readline, fn_addhist); | |
4997 | if (source == NULL) break; | |
4998 | ss = expand_string(source); | |
4999 | if (ss == NULL) | |
5000 | printf ("Failed: %s\n", expand_string_message); | |
5001 | else printf("%s\n", CS ss); | |
5002 | } | |
5003 | ||
5004 | #ifdef USE_READLINE | |
5005 | if (dlhandle != NULL) dlclose(dlhandle); | |
5006 | #endif | |
5007 | } | |
5008 | ||
0ef732d9 PH |
5009 | /* The data file will be open after -Mset */ |
5010 | ||
5011 | if (deliver_datafile >= 0) | |
5012 | { | |
5013 | (void)close(deliver_datafile); | |
5014 | deliver_datafile = -1; | |
5015 | } | |
5016 | ||
059ec3d9 PH |
5017 | exim_exit(EXIT_SUCCESS); |
5018 | } | |
5019 | ||
5020 | ||
5021 | /* The active host name is normally the primary host name, but it can be varied | |
5022 | for hosts that want to play several parts at once. We need to ensure that it is | |
5023 | set for host checking, and for receiving messages. */ | |
5024 | ||
5025 | smtp_active_hostname = primary_hostname; | |
5026 | if (raw_active_hostname != NULL) | |
5027 | { | |
5028 | uschar *nah = expand_string(raw_active_hostname); | |
5029 | if (nah == NULL) | |
5030 | { | |
5031 | if (!expand_string_forcedfail) | |
5032 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand \"%s\" " | |
5033 | "(smtp_active_hostname): %s", raw_active_hostname, | |
5034 | expand_string_message); | |
5035 | } | |
5036 | else if (nah[0] != 0) smtp_active_hostname = nah; | |
5037 | } | |
5038 | ||
5039 | /* Handle host checking: this facility mocks up an incoming SMTP call from a | |
33d73e3b PH |
5040 | given IP address so that the blocking and relay configuration can be tested. |
5041 | Unless a sender_ident was set by -oMt, we discard it (the default is the | |
5042 | caller's login name). An RFC 1413 call is made only if we are running in the | |
5043 | test harness and an incoming interface and both ports are specified, because | |
5044 | there is no TCP/IP call to find the ident for. */ | |
059ec3d9 PH |
5045 | |
5046 | if (host_checking) | |
5047 | { | |
8e669ac1 | 5048 | int x[4]; |
6f0c9a4f | 5049 | int size; |
8e669ac1 | 5050 | |
33d73e3b PH |
5051 | if (!sender_ident_set) |
5052 | { | |
5053 | sender_ident = NULL; | |
5054 | if (running_in_test_harness && sender_host_port != 0 && | |
5055 | interface_address != NULL && interface_port != 0) | |
5056 | verify_get_ident(1413); | |
5057 | } | |
8e669ac1 | 5058 | |
6f0c9a4f PH |
5059 | /* In case the given address is a non-canonical IPv6 address, canonicize |
5060 | it. The code works for both IPv4 and IPv6, as it happens. */ | |
8e669ac1 | 5061 | |
6f0c9a4f PH |
5062 | size = host_aton(sender_host_address, x); |
5063 | sender_host_address = store_get(48); /* large enough for full IPv6 */ | |
5064 | (void)host_nmtoa(size, x, -1, sender_host_address, ':'); | |
5065 | ||
5066 | /* Now set up for testing */ | |
059ec3d9 PH |
5067 | |
5068 | host_build_sender_fullhost(); | |
5069 | smtp_input = TRUE; | |
5070 | smtp_in = stdin; | |
5071 | smtp_out = stdout; | |
5072 | sender_local = FALSE; | |
5073 | sender_host_notsocket = TRUE; | |
5074 | debug_file = stderr; | |
5075 | debug_fd = fileno(debug_file); | |
5076 | fprintf(stdout, "\n**** SMTP testing session as if from host %s\n" | |
5077 | "**** but without any ident (RFC 1413) callback.\n" | |
5078 | "**** This is not for real!\n\n", | |
5079 | sender_host_address); | |
5080 | ||
ce325893 | 5081 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 5082 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 5083 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
5084 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
5085 | ||
24796b8d PH |
5086 | /* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, |
5087 | because a log line has already been written for all its failure exists | |
5088 | (usually "connection refused: <reason>") and writing another one is | |
5089 | unnecessary clutter. */ | |
5090 | ||
059ec3d9 PH |
5091 | if (smtp_start_session()) |
5092 | { | |
5093 | reset_point = store_get(0); | |
5094 | for (;;) | |
5095 | { | |
5096 | store_reset(reset_point); | |
5097 | if (smtp_setup_msg() <= 0) break; | |
5098 | if (!receive_msg(FALSE)) break; | |
5099 | } | |
24796b8d | 5100 | smtp_log_no_mail(); |
059ec3d9 PH |
5101 | } |
5102 | exim_exit(EXIT_SUCCESS); | |
5103 | } | |
5104 | ||
5105 | ||
5106 | /* Arrange for message reception if recipients or SMTP were specified; | |
5107 | otherwise complain unless a version print (-bV) happened or this is a filter | |
98a90c36 PP |
5108 | verification test or info dump. |
5109 | In the former case, show the configuration file name. */ | |
059ec3d9 PH |
5110 | |
5111 | if (recipients_arg >= argc && !extract_recipients && !smtp_input) | |
5112 | { | |
5113 | if (version_printed) | |
5114 | { | |
5115 | printf("Configuration file is %s\n", config_main_filename); | |
5116 | return EXIT_SUCCESS; | |
5117 | } | |
81ea09ca | 5118 | |
98a90c36 PP |
5119 | if (info_flag != CMDINFO_NONE) |
5120 | { | |
5121 | show_exim_information(info_flag, info_stdout ? stdout : stderr); | |
5122 | return info_stdout ? EXIT_SUCCESS : EXIT_FAILURE; | |
5123 | } | |
5124 | ||
f05da2e8 | 5125 | if (filter_test == FTEST_NONE) |
81ea09ca | 5126 | exim_usage(called_as); |
059ec3d9 PH |
5127 | } |
5128 | ||
5129 | ||
5130 | /* If mua_wrapper is set, Exim is being used to turn an MUA that submits on the | |
5131 | standard input into an MUA that submits to a smarthost over TCP/IP. We know | |
5132 | that we are not called from inetd, because that is rejected above. The | |
5133 | following configuration settings are forced here: | |
5134 | ||
5135 | (1) Synchronous delivery (-odi) | |
5136 | (2) Errors to stderr (-oep == -oeq) | |
5137 | (3) No parallel remote delivery | |
5138 | (4) Unprivileged delivery | |
5139 | ||
5140 | We don't force overall queueing options because there are several of them; | |
5141 | instead, queueing is avoided below when mua_wrapper is set. However, we do need | |
5142 | to override any SMTP queueing. */ | |
5143 | ||
5144 | if (mua_wrapper) | |
5145 | { | |
5146 | synchronous_delivery = TRUE; | |
5147 | arg_error_handling = ERRORS_STDERR; | |
5148 | remote_max_parallel = 1; | |
5149 | deliver_drop_privilege = TRUE; | |
5150 | queue_smtp = FALSE; | |
5151 | queue_smtp_domains = NULL; | |
8c5d388a | 5152 | #ifdef SUPPORT_I18N |
0ec7e948 JH |
5153 | message_utf8_downconvert = -1; /* convert-if-needed */ |
5154 | #endif | |
059ec3d9 PH |
5155 | } |
5156 | ||
5157 | ||
5158 | /* Prepare to accept one or more new messages on the standard input. When a | |
5159 | message has been read, its id is returned in message_id[]. If doing immediate | |
5160 | delivery, we fork a delivery process for each received message, except for the | |
5161 | last one, where we can save a process switch. | |
5162 | ||
5163 | It is only in non-smtp mode that error_handling is allowed to be changed from | |
5164 | its default of ERRORS_SENDER by argument. (Idle thought: are any of the | |
5165 | sendmail error modes other than -oem ever actually used? Later: yes.) */ | |
5166 | ||
5167 | if (!smtp_input) error_handling = arg_error_handling; | |
5168 | ||
5169 | /* If this is an inetd call, ensure that stderr is closed to prevent panic | |
5170 | logging being sent down the socket and make an identd call to get the | |
5171 | sender_ident. */ | |
5172 | ||
5173 | else if (is_inetd) | |
5174 | { | |
1fe64dcc | 5175 | (void)fclose(stderr); |
059ec3d9 PH |
5176 | exim_nullstd(); /* Re-open to /dev/null */ |
5177 | verify_get_ident(IDENT_PORT); | |
5178 | host_build_sender_fullhost(); | |
5179 | set_process_info("handling incoming connection from %s via inetd", | |
5180 | sender_fullhost); | |
5181 | } | |
5182 | ||
5183 | /* If the sender host address has been set, build sender_fullhost if it hasn't | |
5184 | already been done (which it will have been for inetd). This caters for the | |
5185 | case when it is forced by -oMa. However, we must flag that it isn't a socket, | |
5186 | so that the test for IP options is skipped for -bs input. */ | |
5187 | ||
5188 | if (sender_host_address != NULL && sender_fullhost == NULL) | |
5189 | { | |
5190 | host_build_sender_fullhost(); | |
5191 | set_process_info("handling incoming connection from %s via -oMa", | |
5192 | sender_fullhost); | |
5193 | sender_host_notsocket = TRUE; | |
5194 | } | |
5195 | ||
5196 | /* Otherwise, set the sender host as unknown except for inetd calls. This | |
5197 | prevents host checking in the case of -bs not from inetd and also for -bS. */ | |
5198 | ||
5199 | else if (!is_inetd) sender_host_unknown = TRUE; | |
5200 | ||
5201 | /* If stdout does not exist, then dup stdin to stdout. This can happen | |
5202 | if exim is started from inetd. In this case fd 0 will be set to the socket, | |
5203 | but fd 1 will not be set. This also happens for passed SMTP channels. */ | |
5204 | ||
1fe64dcc | 5205 | if (fstat(1, &statbuf) < 0) (void)dup2(0, 1); |
059ec3d9 | 5206 | |
273f34d0 PH |
5207 | /* Set up the incoming protocol name and the state of the program. Root is |
5208 | allowed to force received protocol via the -oMr option above. If we have come | |
5209 | via inetd, the process info has already been set up. We don't set | |
5210 | received_protocol here for smtp input, as it varies according to | |
5211 | batch/HELO/EHLO/AUTH/TLS. */ | |
059ec3d9 PH |
5212 | |
5213 | if (smtp_input) | |
5214 | { | |
273f34d0 PH |
5215 | if (!is_inetd) set_process_info("accepting a local %sSMTP message from <%s>", |
5216 | smtp_batched_input? "batched " : "", | |
5217 | (sender_address!= NULL)? sender_address : originator_login); | |
059ec3d9 PH |
5218 | } |
5219 | else | |
5220 | { | |
5221 | if (received_protocol == NULL) | |
5222 | received_protocol = string_sprintf("local%s", called_as); | |
5223 | set_process_info("accepting a local non-SMTP message from <%s>", | |
5224 | sender_address); | |
5225 | } | |
5226 | ||
8669f003 PH |
5227 | /* Initialize the session_local_queue-only flag (this will be ignored if |
5228 | mua_wrapper is set) */ | |
059ec3d9 PH |
5229 | |
5230 | queue_check_only(); | |
8669f003 | 5231 | session_local_queue_only = queue_only; |
059ec3d9 PH |
5232 | |
5233 | /* For non-SMTP and for batched SMTP input, check that there is enough space on | |
5234 | the spool if so configured. On failure, we must not attempt to send an error | |
5235 | message! (For interactive SMTP, the check happens at MAIL FROM and an SMTP | |
5236 | error code is given.) */ | |
5237 | ||
5238 | if ((!smtp_input || smtp_batched_input) && !receive_check_fs(0)) | |
5239 | { | |
5240 | fprintf(stderr, "exim: insufficient disk space\n"); | |
5241 | return EXIT_FAILURE; | |
5242 | } | |
5243 | ||
273f34d0 PH |
5244 | /* If this is smtp input of any kind, real or batched, handle the start of the |
5245 | SMTP session. | |
24796b8d PH |
5246 | |
5247 | NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails, | |
5248 | because a log line has already been written for all its failure exists | |
5249 | (usually "connection refused: <reason>") and writing another one is | |
5250 | unnecessary clutter. */ | |
059ec3d9 PH |
5251 | |
5252 | if (smtp_input) | |
5253 | { | |
5254 | smtp_in = stdin; | |
5255 | smtp_out = stdout; | |
ce325893 | 5256 | memset(sender_host_cache, 0, sizeof(sender_host_cache)); |
059ec3d9 | 5257 | if (verify_check_host(&hosts_connection_nolog) == OK) |
6c6d6e48 | 5258 | BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection); |
059ec3d9 PH |
5259 | log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info()); |
5260 | if (!smtp_start_session()) | |
5261 | { | |
5262 | mac_smtp_fflush(); | |
5263 | exim_exit(EXIT_SUCCESS); | |
5264 | } | |
5265 | } | |
5266 | ||
45b91596 | 5267 | /* Otherwise, set up the input size limit here. */ |
059ec3d9 PH |
5268 | |
5269 | else | |
5270 | { | |
d45b1de8 PH |
5271 | thismessage_size_limit = expand_string_integer(message_size_limit, TRUE); |
5272 | if (expand_string_message != NULL) | |
059ec3d9 PH |
5273 | { |
5274 | if (thismessage_size_limit == -1) | |
5275 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand " | |
5276 | "message_size_limit: %s", expand_string_message); | |
5277 | else | |
5278 | log_write(0, LOG_MAIN|LOG_PANIC_DIE, "invalid value for " | |
5279 | "message_size_limit: %s", expand_string_message); | |
5280 | } | |
5281 | } | |
5282 | ||
5283 | /* Loop for several messages when reading SMTP input. If we fork any child | |
5284 | processes, we don't want to wait for them unless synchronous delivery is | |
5285 | requested, so set SIGCHLD to SIG_IGN in that case. This is not necessarily the | |
5286 | same as SIG_DFL, despite the fact that documentation often lists the default as | |
5287 | "ignore". This is a confusing area. This is what I know: | |
5288 | ||
5289 | At least on some systems (e.g. Solaris), just setting SIG_IGN causes child | |
5290 | processes that complete simply to go away without ever becoming defunct. You | |
5291 | can't then wait for them - but we don't want to wait for them in the | |
5292 | non-synchronous delivery case. However, this behaviour of SIG_IGN doesn't | |
5293 | happen for all OS (e.g. *BSD is different). | |
5294 | ||
5295 | But that's not the end of the story. Some (many? all?) systems have the | |
5296 | SA_NOCLDWAIT option for sigaction(). This requests the behaviour that Solaris | |
5297 | has by default, so it seems that the difference is merely one of default | |
5298 | (compare restarting vs non-restarting signals). | |
5299 | ||
5300 | To cover all cases, Exim sets SIG_IGN with SA_NOCLDWAIT here if it can. If not, | |
5301 | it just sets SIG_IGN. To be on the safe side it also calls waitpid() at the end | |
5302 | of the loop below. Paranoia rules. | |
5303 | ||
5304 | February 2003: That's *still* not the end of the story. There are now versions | |
5305 | of Linux (where SIG_IGN does work) that are picky. If, having set SIG_IGN, a | |
5306 | process then calls waitpid(), a grumble is written to the system log, because | |
5307 | this is logically inconsistent. In other words, it doesn't like the paranoia. | |
5308 | As a consequenc of this, the waitpid() below is now excluded if we are sure | |
5309 | that SIG_IGN works. */ | |
5310 | ||
5311 | if (!synchronous_delivery) | |
5312 | { | |
5313 | #ifdef SA_NOCLDWAIT | |
5314 | struct sigaction act; | |
5315 | act.sa_handler = SIG_IGN; | |
5316 | sigemptyset(&(act.sa_mask)); | |
5317 | act.sa_flags = SA_NOCLDWAIT; | |
5318 | sigaction(SIGCHLD, &act, NULL); | |
5319 | #else | |
5320 | signal(SIGCHLD, SIG_IGN); | |
5321 | #endif | |
5322 | } | |
5323 | ||
5324 | /* Save the current store pool point, for resetting at the start of | |
5325 | each message, and save the real sender address, if any. */ | |
5326 | ||
5327 | reset_point = store_get(0); | |
5328 | real_sender_address = sender_address; | |
5329 | ||
5330 | /* Loop to receive messages; receive_msg() returns TRUE if there are more | |
5331 | messages to be read (SMTP input), or FALSE otherwise (not SMTP, or SMTP channel | |
5332 | collapsed). */ | |
5333 | ||
5334 | while (more) | |
5335 | { | |
5336 | store_reset(reset_point); | |
5337 | message_id[0] = 0; | |
5338 | ||
273f34d0 PH |
5339 | /* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP |
5340 | input and build the recipients list, before calling receive_msg() to read the | |
5341 | message proper. Whatever sender address is given in the SMTP transaction is | |
5342 | often ignored for local senders - we use the actual sender, which is normally | |
5343 | either the underlying user running this process or a -f argument provided by | |
5344 | a trusted caller. It is saved in real_sender_address. The test for whether to | |
5345 | accept the SMTP sender is encapsulated in receive_check_set_sender(). */ | |
059ec3d9 PH |
5346 | |
5347 | if (smtp_input) | |
5348 | { | |
5349 | int rc; | |
5350 | if ((rc = smtp_setup_msg()) > 0) | |
5351 | { | |
5352 | if (real_sender_address != NULL && | |
5353 | !receive_check_set_sender(sender_address)) | |
5354 | { | |
5355 | sender_address = raw_sender = real_sender_address; | |
5356 | sender_address_unrewritten = NULL; | |
5357 | } | |
273f34d0 PH |
5358 | |
5359 | /* For batched SMTP, we have to run the acl_not_smtp_start ACL, since it | |
5360 | isn't really SMTP, so no other ACL will run until the acl_not_smtp one at | |
5361 | the very end. The result of the ACL is ignored (as for other non-SMTP | |
5362 | messages). It is run for its potential side effects. */ | |
5363 | ||
5364 | if (smtp_batched_input && acl_not_smtp_start != NULL) | |
5365 | { | |
5366 | uschar *user_msg, *log_msg; | |
5367 | enable_dollar_recipients = TRUE; | |
5368 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, | |
5369 | &user_msg, &log_msg); | |
5370 | enable_dollar_recipients = FALSE; | |
5371 | } | |
5372 | ||
5373 | /* Now get the data for the message */ | |
5374 | ||
059ec3d9 PH |
5375 | more = receive_msg(extract_recipients); |
5376 | if (message_id[0] == 0) | |
5377 | { | |
5378 | if (more) continue; | |
b4ed4da0 | 5379 | smtp_log_no_mail(); /* Log no mail if configured */ |
059ec3d9 PH |
5380 | exim_exit(EXIT_FAILURE); |
5381 | } | |
5382 | } | |
b4ed4da0 PH |
5383 | else |
5384 | { | |
5385 | smtp_log_no_mail(); /* Log no mail if configured */ | |
5386 | exim_exit((rc == 0)? EXIT_SUCCESS : EXIT_FAILURE); | |
5387 | } | |
059ec3d9 PH |
5388 | } |
5389 | ||
5390 | /* In the non-SMTP case, we have all the information from the command | |
5391 | line, but must process it in case it is in the more general RFC822 | |
5392 | format, and in any case, to detect syntax errors. Also, it appears that | |
5393 | the use of comma-separated lists as single arguments is common, so we | |
5394 | had better support them. */ | |
5395 | ||
5396 | else | |
5397 | { | |
5398 | int i; | |
5399 | int rcount = 0; | |
5400 | int count = argc - recipients_arg; | |
5401 | uschar **list = argv + recipients_arg; | |
eb2c0248 | 5402 | |
69358f02 | 5403 | /* These options cannot be changed dynamically for non-SMTP messages */ |
eb2c0248 | 5404 | |
69358f02 | 5405 | active_local_sender_retain = local_sender_retain; |
eb2c0248 | 5406 | active_local_from_check = local_from_check; |
059ec3d9 PH |
5407 | |
5408 | /* Save before any rewriting */ | |
5409 | ||
5410 | raw_sender = string_copy(sender_address); | |
5411 | ||
5412 | /* Loop for each argument */ | |
5413 | ||
5414 | for (i = 0; i < count; i++) | |
5415 | { | |
5416 | int start, end, domain; | |
5417 | uschar *errmess; | |
5418 | uschar *s = list[i]; | |
5419 | ||
5420 | /* Loop for each comma-separated address */ | |
5421 | ||
5422 | while (*s != 0) | |
5423 | { | |
5424 | BOOL finished = FALSE; | |
5425 | uschar *recipient; | |
5426 | uschar *ss = parse_find_address_end(s, FALSE); | |
5427 | ||
5428 | if (*ss == ',') *ss = 0; else finished = TRUE; | |
5429 | ||
5430 | /* Check max recipients - if -t was used, these aren't recipients */ | |
5431 | ||
5432 | if (recipients_max > 0 && ++rcount > recipients_max && | |
5433 | !extract_recipients) | |
059ec3d9 PH |
5434 | if (error_handling == ERRORS_STDERR) |
5435 | { | |
5436 | fprintf(stderr, "exim: too many recipients\n"); | |
5437 | exim_exit(EXIT_FAILURE); | |
5438 | } | |
5439 | else | |
5440 | { | |
5441 | return | |
5442 | moan_to_sender(ERRMESS_TOOMANYRECIP, NULL, NULL, stdin, TRUE)? | |
5443 | errors_sender_rc : EXIT_FAILURE; | |
5444 | } | |
059ec3d9 | 5445 | |
8c5d388a | 5446 | #ifdef SUPPORT_I18N |
250b6871 JH |
5447 | { |
5448 | BOOL b = allow_utf8_domains; | |
5449 | allow_utf8_domains = TRUE; | |
5450 | #endif | |
059ec3d9 PH |
5451 | recipient = |
5452 | parse_extract_address(s, &errmess, &start, &end, &domain, FALSE); | |
5453 | ||
8c5d388a | 5454 | #ifdef SUPPORT_I18N |
250b6871 JH |
5455 | if (string_is_utf8(recipient)) |
5456 | message_smtputf8 = TRUE; | |
5457 | else | |
5458 | allow_utf8_domains = b; | |
5459 | } | |
5460 | #endif | |
059ec3d9 PH |
5461 | if (domain == 0 && !allow_unqualified_recipient) |
5462 | { | |
5463 | recipient = NULL; | |
5464 | errmess = US"unqualified recipient address not allowed"; | |
5465 | } | |
5466 | ||
5467 | if (recipient == NULL) | |
5468 | { | |
5469 | if (error_handling == ERRORS_STDERR) | |
5470 | { | |
5471 | fprintf(stderr, "exim: bad recipient address \"%s\": %s\n", | |
5472 | string_printing(list[i]), errmess); | |
5473 | exim_exit(EXIT_FAILURE); | |
5474 | } | |
5475 | else | |
5476 | { | |
5477 | error_block eblock; | |
5478 | eblock.next = NULL; | |
5479 | eblock.text1 = string_printing(list[i]); | |
5480 | eblock.text2 = errmess; | |
5481 | return | |
5482 | moan_to_sender(ERRMESS_BADARGADDRESS, &eblock, NULL, stdin, TRUE)? | |
5483 | errors_sender_rc : EXIT_FAILURE; | |
5484 | } | |
5485 | } | |
5486 | ||
5487 | receive_add_recipient(recipient, -1); | |
5488 | s = ss; | |
5489 | if (!finished) | |
5490 | while (*(++s) != 0 && (*s == ',' || isspace(*s))); | |
5491 | } | |
5492 | } | |
5493 | ||
5494 | /* Show the recipients when debugging */ | |
5495 | ||
5496 | DEBUG(D_receive) | |
5497 | { | |
5498 | int i; | |
5499 | if (sender_address != NULL) debug_printf("Sender: %s\n", sender_address); | |
5500 | if (recipients_list != NULL) | |
5501 | { | |
5502 | debug_printf("Recipients:\n"); | |
5503 | for (i = 0; i < recipients_count; i++) | |
5504 | debug_printf(" %s\n", recipients_list[i].address); | |
5505 | } | |
5506 | } | |
5507 | ||
45b91596 PH |
5508 | /* Run the acl_not_smtp_start ACL if required. The result of the ACL is |
5509 | ignored; rejecting here would just add complication, and it can just as | |
5510 | well be done later. Allow $recipients to be visible in the ACL. */ | |
5511 | ||
5512 | if (acl_not_smtp_start != NULL) | |
5513 | { | |
5514 | uschar *user_msg, *log_msg; | |
5515 | enable_dollar_recipients = TRUE; | |
5516 | (void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start, | |
5517 | &user_msg, &log_msg); | |
5518 | enable_dollar_recipients = FALSE; | |
5519 | } | |
5520 | ||
f05da2e8 PH |
5521 | /* Read the data for the message. If filter_test is not FTEST_NONE, this |
5522 | will just read the headers for the message, and not write anything onto the | |
5523 | spool. */ | |
059ec3d9 PH |
5524 | |
5525 | message_ended = END_NOTENDED; | |
5526 | more = receive_msg(extract_recipients); | |
5527 | ||
5528 | /* more is always FALSE here (not SMTP message) when reading a message | |
5529 | for real; when reading the headers of a message for filter testing, | |
5530 | it is TRUE if the headers were terminated by '.' and FALSE otherwise. */ | |
5531 | ||
5532 | if (message_id[0] == 0) exim_exit(EXIT_FAILURE); | |
5533 | } /* Non-SMTP message reception */ | |
5534 | ||
5535 | /* If this is a filter testing run, there are headers in store, but | |
5536 | no message on the spool. Run the filtering code in testing mode, setting | |
5537 | the domain to the qualify domain and the local part to the current user, | |
5538 | unless they have been set by options. The prefix and suffix are left unset | |
5539 | unless specified. The the return path is set to to the sender unless it has | |
5540 | already been set from a return-path header in the message. */ | |
5541 | ||
f05da2e8 | 5542 | if (filter_test != FTEST_NONE) |
059ec3d9 PH |
5543 | { |
5544 | deliver_domain = (ftest_domain != NULL)? | |
5545 | ftest_domain : qualify_domain_recipient; | |
5546 | deliver_domain_orig = deliver_domain; | |
5547 | deliver_localpart = (ftest_localpart != NULL)? | |
5548 | ftest_localpart : originator_login; | |
5549 | deliver_localpart_orig = deliver_localpart; | |
5550 | deliver_localpart_prefix = ftest_prefix; | |
5551 | deliver_localpart_suffix = ftest_suffix; | |
5552 | deliver_home = originator_home; | |
5553 | ||
5554 | if (return_path == NULL) | |
5555 | { | |
5556 | printf("Return-path copied from sender\n"); | |
5557 | return_path = string_copy(sender_address); | |
5558 | } | |
5559 | else | |
059ec3d9 | 5560 | printf("Return-path = %s\n", (return_path[0] == 0)? US"<>" : return_path); |
059ec3d9 PH |
5561 | printf("Sender = %s\n", (sender_address[0] == 0)? US"<>" : sender_address); |
5562 | ||
5563 | receive_add_recipient( | |
5564 | string_sprintf("%s%s%s@%s", | |
5565 | (ftest_prefix == NULL)? US"" : ftest_prefix, | |
5566 | deliver_localpart, | |
5567 | (ftest_suffix == NULL)? US"" : ftest_suffix, | |
5568 | deliver_domain), -1); | |
5569 | ||
5570 | printf("Recipient = %s\n", recipients_list[0].address); | |
5571 | if (ftest_prefix != NULL) printf("Prefix = %s\n", ftest_prefix); | |
5572 | if (ftest_suffix != NULL) printf("Suffix = %s\n", ftest_suffix); | |
5573 | ||
1ac6b2e7 JH |
5574 | if (chdir("/")) /* Get away from wherever the user is running this from */ |
5575 | { | |
5576 | DEBUG(D_receive) debug_printf("chdir(\"/\") failed\n"); | |
5577 | exim_exit(EXIT_FAILURE); | |
5578 | } | |
8e669ac1 PH |
5579 | |
5580 | /* Now we run either a system filter test, or a user filter test, or both. | |
5581 | In the latter case, headers added by the system filter will persist and be | |
5582 | available to the user filter. We need to copy the filter variables | |
f05da2e8 | 5583 | explicitly. */ |
8e669ac1 | 5584 | |
f05da2e8 PH |
5585 | if ((filter_test & FTEST_SYSTEM) != 0) |
5586 | { | |
5587 | if (!filter_runtest(filter_sfd, filter_test_sfile, TRUE, more)) | |
5588 | exim_exit(EXIT_FAILURE); | |
8e669ac1 PH |
5589 | } |
5590 | ||
f05da2e8 | 5591 | memcpy(filter_sn, filter_n, sizeof(filter_sn)); |
8e669ac1 | 5592 | |
f05da2e8 PH |
5593 | if ((filter_test & FTEST_USER) != 0) |
5594 | { | |
5595 | if (!filter_runtest(filter_ufd, filter_test_ufile, FALSE, more)) | |
5596 | exim_exit(EXIT_FAILURE); | |
8e669ac1 PH |
5597 | } |
5598 | ||
f05da2e8 | 5599 | exim_exit(EXIT_SUCCESS); |
059ec3d9 PH |
5600 | } |
5601 | ||
5602 | /* Else act on the result of message reception. We should not get here unless | |
8669f003 PH |
5603 | message_id[0] is non-zero. If queue_only is set, session_local_queue_only |
5604 | will be TRUE. If it is not, check on the number of messages received in this | |
5605 | connection. */ | |
5606 | ||
5607 | if (!session_local_queue_only && | |
5608 | smtp_accept_queue_per_connection > 0 && | |
5609 | receive_messagecount > smtp_accept_queue_per_connection) | |
059ec3d9 | 5610 | { |
8669f003 PH |
5611 | session_local_queue_only = TRUE; |
5612 | queue_only_reason = 2; | |
5613 | } | |
5614 | ||
5615 | /* Initialize local_queue_only from session_local_queue_only. If it is false, | |
5616 | and queue_only_load is set, check that the load average is below it. If it is | |
5617 | not, set local_queue_only TRUE. If queue_only_load_latch is true (the | |
5618 | default), we put the whole session into queue_only mode. It then remains this | |
5619 | way for any subsequent messages on the same SMTP connection. This is a | |
5620 | deliberate choice; even though the load average may fall, it doesn't seem | |
5621 | right to deliver later messages on the same call when not delivering earlier | |
5622 | ones. However, there are odd cases where this is not wanted, so this can be | |
5623 | changed by setting queue_only_load_latch false. */ | |
5624 | ||
5625 | local_queue_only = session_local_queue_only; | |
5626 | if (!local_queue_only && queue_only_load >= 0) | |
5627 | { | |
5628 | local_queue_only = (load_average = OS_GETLOADAVG()) > queue_only_load; | |
5629 | if (local_queue_only) | |
059ec3d9 | 5630 | { |
8669f003 PH |
5631 | queue_only_reason = 3; |
5632 | if (queue_only_load_latch) session_local_queue_only = TRUE; | |
059ec3d9 PH |
5633 | } |
5634 | } | |
5635 | ||
5636 | /* If running as an MUA wrapper, all queueing options and freezing options | |
5637 | are ignored. */ | |
5638 | ||
5639 | if (mua_wrapper) | |
5640 | local_queue_only = queue_only_policy = deliver_freeze = FALSE; | |
5641 | ||
5642 | /* Log the queueing here, when it will get a message id attached, but | |
5643 | not if queue_only is set (case 0). Case 1 doesn't happen here (too many | |
5644 | connections). */ | |
5645 | ||
5646 | if (local_queue_only) switch(queue_only_reason) | |
5647 | { | |
5648 | case 2: | |
5649 | log_write(L_delay_delivery, | |
5650 | LOG_MAIN, "no immediate delivery: more than %d messages " | |
5651 | "received in one connection", smtp_accept_queue_per_connection); | |
5652 | break; | |
5653 | ||
5654 | case 3: | |
5655 | log_write(L_delay_delivery, | |
5656 | LOG_MAIN, "no immediate delivery: load average %.2f", | |
5657 | (double)load_average/1000.0); | |
5658 | break; | |
5659 | } | |
5660 | ||
5661 | /* Else do the delivery unless the ACL or local_scan() called for queue only | |
5662 | or froze the message. Always deliver in a separate process. A fork failure is | |
5663 | not a disaster, as the delivery will eventually happen on a subsequent queue | |
eb2c0248 PH |
5664 | run. The search cache must be tidied before the fork, as the parent will |
5665 | do it before exiting. The child will trigger a lookup failure and | |
5666 | thereby defer the delivery if it tries to use (for example) a cached ldap | |
5667 | connection that the parent has called unbind on. */ | |
059ec3d9 PH |
5668 | |
5669 | else if (!queue_only_policy && !deliver_freeze) | |
5670 | { | |
5671 | pid_t pid; | |
eb2c0248 PH |
5672 | search_tidyup(); |
5673 | ||
059ec3d9 PH |
5674 | if ((pid = fork()) == 0) |
5675 | { | |
5676 | int rc; | |
5677 | close_unwanted(); /* Close unwanted file descriptors and TLS */ | |
5678 | exim_nullstd(); /* Ensure std{in,out,err} exist */ | |
5679 | ||
5680 | /* Re-exec Exim if we need to regain privilege (note: in mua_wrapper | |
5681 | mode, deliver_drop_privilege is forced TRUE). */ | |
5682 | ||
5683 | if (geteuid() != root_uid && !deliver_drop_privilege && !unprivileged) | |
5684 | { | |
5685 | (void)child_exec_exim(CEE_EXEC_EXIT, FALSE, NULL, FALSE, 2, US"-Mc", | |
5686 | message_id); | |
5687 | /* Control does not return here. */ | |
5688 | } | |
5689 | ||
5690 | /* No need to re-exec */ | |
5691 | ||
5692 | rc = deliver_message(message_id, FALSE, FALSE); | |
5693 | search_tidyup(); | |
5694 | _exit((!mua_wrapper || rc == DELIVER_MUA_SUCCEEDED)? | |
5695 | EXIT_SUCCESS : EXIT_FAILURE); | |
5696 | } | |
5697 | ||
5698 | if (pid < 0) | |
5699 | { | |
5700 | log_write(0, LOG_MAIN|LOG_PANIC, "failed to fork automatic delivery " | |
5701 | "process: %s", strerror(errno)); | |
5702 | } | |
5703 | ||
5704 | /* In the parent, wait if synchronous delivery is required. This will | |
5705 | always be the case in MUA wrapper mode. */ | |
5706 | ||
5707 | else if (synchronous_delivery) | |
5708 | { | |
5709 | int status; | |
5710 | while (wait(&status) != pid); | |
5711 | if ((status & 0x00ff) != 0) | |
5712 | log_write(0, LOG_MAIN|LOG_PANIC, | |
5713 | "process %d crashed with signal %d while delivering %s", | |
5714 | (int)pid, status & 0x00ff, message_id); | |
5715 | if (mua_wrapper && (status & 0xffff) != 0) exim_exit(EXIT_FAILURE); | |
5716 | } | |
5717 | } | |
5718 | ||
5719 | /* The loop will repeat if more is TRUE. If we do not know know that the OS | |
5720 | automatically reaps children (see comments above the loop), clear away any | |
5721 | finished subprocesses here, in case there are lots of messages coming in | |
5722 | from the same source. */ | |
5723 | ||
5724 | #ifndef SIG_IGN_WORKS | |
5725 | while (waitpid(-1, NULL, WNOHANG) > 0); | |
5726 | #endif | |
5727 | } | |
5728 | ||
5729 | exim_exit(EXIT_SUCCESS); /* Never returns */ | |
5730 | return 0; /* To stop compiler warning */ | |
5731 | } | |
5732 | ||
5733 | /* End of exim.c */ |