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Commit | Line | Data |
---|---|---|
ef416fc2 | 1 | /* |
503b54c9 | 2 | * "mailto" notifier for CUPS. |
ef416fc2 | 3 | * |
2de7c5f8 MS |
4 | * Copyright © 2007-2018 by Apple Inc. |
5 | * Copyright © 1997-2005 by Easy Software Products. | |
ef416fc2 | 6 | * |
2de7c5f8 MS |
7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more |
8 | * information. | |
ef416fc2 | 9 | */ |
10 | ||
11 | /* | |
12 | * Include necessary headers... | |
13 | */ | |
14 | ||
e60ec91f | 15 | #include <cups/cups-private.h> |
fa73b229 | 16 | #include <sys/wait.h> |
17 | #include <signal.h> | |
18 | ||
19 | ||
20 | /* | |
21 | * Globals... | |
22 | */ | |
23 | ||
24 | char mailtoCc[1024]; /* Cc email address */ | |
25 | char mailtoFrom[1024]; /* From email address */ | |
26 | char mailtoReplyTo[1024]; /* Reply-To email address */ | |
27 | char mailtoSubject[1024]; /* Subject prefix */ | |
28 | char mailtoSMTPServer[1024]; /* SMTP server to use */ | |
29 | char mailtoSendmail[1024]; /* Sendmail program to use */ | |
30 | ||
31 | ||
32 | /* | |
33 | * Local functions... | |
34 | */ | |
35 | ||
2de7c5f8 | 36 | void email_message(const char *to, const char *subject, const char *text); |
fa73b229 | 37 | int load_configuration(void); |
38 | cups_file_t *pipe_sendmail(const char *to); | |
39 | void print_attributes(ipp_t *ipp, int indent); | |
ef416fc2 | 40 | |
41 | ||
42 | /* | |
43 | * 'main()' - Main entry for the mailto notifier. | |
44 | */ | |
45 | ||
46 | int /* O - Exit status */ | |
47 | main(int argc, /* I - Number of command-line arguments */ | |
48 | char *argv[]) /* I - Command-line arguments */ | |
49 | { | |
fa73b229 | 50 | int i; /* Looping var */ |
51 | ipp_t *msg; /* Event message from scheduler */ | |
52 | ipp_state_t state; /* IPP event state */ | |
53 | char *subject, /* Subject for notification message */ | |
54 | *text; /* Text for notification message */ | |
55 | cups_lang_t *lang; /* Language info */ | |
56 | char temp[1024]; /* Temporary string */ | |
57 | int templen; /* Length of temporary string */ | |
58 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
59 | struct sigaction action; /* POSIX sigaction data */ | |
60 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
61 | ||
62 | ||
63 | /* | |
64 | * Don't buffer stderr... | |
65 | */ | |
66 | ||
67 | setbuf(stderr, NULL); | |
68 | ||
69 | /* | |
70 | * Ignore SIGPIPE signals... | |
71 | */ | |
72 | ||
73 | #ifdef HAVE_SIGSET | |
74 | sigset(SIGPIPE, SIG_IGN); | |
75 | #elif defined(HAVE_SIGACTION) | |
76 | memset(&action, 0, sizeof(action)); | |
77 | action.sa_handler = SIG_IGN; | |
78 | sigaction(SIGPIPE, &action, NULL); | |
79 | #else | |
80 | signal(SIGPIPE, SIG_IGN); | |
81 | #endif /* HAVE_SIGSET */ | |
82 | ||
83 | /* | |
84 | * Validate command-line options... | |
85 | */ | |
86 | ||
87 | if (argc != 3) | |
88 | { | |
89 | fputs("Usage: mailto mailto:user@domain.com notify-user-data\n", stderr); | |
90 | return (1); | |
91 | } | |
92 | ||
93 | if (strncmp(argv[1], "mailto:", 7)) | |
94 | { | |
95 | fprintf(stderr, "ERROR: Bad recipient \"%s\"!\n", argv[1]); | |
96 | return (1); | |
97 | } | |
98 | ||
99 | fprintf(stderr, "DEBUG: argc=%d\n", argc); | |
100 | for (i = 0; i < argc; i ++) | |
101 | fprintf(stderr, "DEBUG: argv[%d]=\"%s\"\n", i, argv[i]); | |
102 | ||
103 | /* | |
104 | * Load configuration data... | |
105 | */ | |
106 | ||
107 | if ((lang = cupsLangDefault()) == NULL) | |
108 | return (1); | |
109 | ||
110 | if (!load_configuration()) | |
111 | return (1); | |
112 | ||
113 | /* | |
114 | * Get the reply-to address... | |
115 | */ | |
116 | ||
117 | templen = sizeof(temp); | |
118 | httpDecode64_2(temp, &templen, argv[2]); | |
119 | ||
120 | if (!strncmp(temp, "mailto:", 7)) | |
121 | strlcpy(mailtoReplyTo, temp + 7, sizeof(mailtoReplyTo)); | |
122 | else if (temp[0]) | |
123 | fprintf(stderr, "WARNING: Bad notify-user-data value (%d bytes) ignored!\n", | |
124 | templen); | |
125 | ||
126 | /* | |
127 | * Loop forever until we run out of events... | |
128 | */ | |
129 | ||
130 | for (;;) | |
131 | { | |
132 | /* | |
133 | * Get the next event... | |
134 | */ | |
135 | ||
136 | msg = ippNew(); | |
137 | while ((state = ippReadFile(0, msg)) != IPP_DATA) | |
138 | { | |
139 | if (state <= IPP_IDLE) | |
140 | break; | |
141 | } | |
142 | ||
143 | fprintf(stderr, "DEBUG: state=%d\n", state); | |
144 | ||
145 | if (state == IPP_ERROR) | |
146 | fputs("DEBUG: ippReadFile() returned IPP_ERROR!\n", stderr); | |
147 | ||
148 | if (state <= IPP_IDLE) | |
149 | { | |
150 | /* | |
151 | * Out of messages, free memory and then exit... | |
152 | */ | |
153 | ||
154 | ippDelete(msg); | |
155 | return (0); | |
156 | } | |
157 | ||
158 | /* | |
159 | * Get the subject and text for the message, then email it... | |
160 | */ | |
161 | ||
162 | subject = cupsNotifySubject(lang, msg); | |
163 | text = cupsNotifyText(lang, msg); | |
164 | ||
165 | fprintf(stderr, "DEBUG: subject=\"%s\"\n", subject); | |
166 | fprintf(stderr, "DEBUG: text=\"%s\"\n", text); | |
167 | ||
168 | if (subject && text) | |
169 | email_message(argv[1] + 7, subject, text); | |
170 | else | |
171 | { | |
172 | fputs("ERROR: Missing attributes in event notification!\n", stderr); | |
173 | print_attributes(msg, 4); | |
174 | } | |
175 | ||
176 | /* | |
177 | * Free the memory used for this event... | |
178 | */ | |
179 | ||
180 | if (subject) | |
181 | free(subject); | |
182 | ||
183 | if (text) | |
184 | free(text); | |
185 | ||
186 | ippDelete(msg); | |
187 | } | |
188 | } | |
189 | ||
190 | ||
191 | /* | |
192 | * 'email_message()' - Email a notification message. | |
193 | */ | |
194 | ||
195 | void | |
196 | email_message(const char *to, /* I - Recipient of message */ | |
197 | const char *subject, /* I - Subject of message */ | |
198 | const char *text) /* I - Text of message */ | |
199 | { | |
200 | cups_file_t *fp; /* Pipe/socket to mail server */ | |
201 | const char *nl; /* Newline to use */ | |
202 | char response[1024]; /* SMTP response buffer */ | |
203 | ||
204 | ||
205 | /* | |
206 | * Connect to the mail server... | |
207 | */ | |
208 | ||
209 | if (mailtoSendmail[0]) | |
210 | { | |
211 | /* | |
212 | * Use the sendmail command... | |
213 | */ | |
214 | ||
215 | fp = pipe_sendmail(to); | |
216 | ||
217 | if (!fp) | |
218 | return; | |
219 | ||
220 | nl = "\n"; | |
221 | } | |
222 | else | |
223 | { | |
224 | /* | |
225 | * Use an SMTP server... | |
226 | */ | |
227 | ||
228 | char hostbuf[1024]; /* Local hostname */ | |
229 | ||
230 | ||
231 | if (strchr(mailtoSMTPServer, ':')) | |
2de7c5f8 | 232 | { |
fa73b229 | 233 | fp = cupsFileOpen(mailtoSMTPServer, "s"); |
2de7c5f8 | 234 | } |
fa73b229 | 235 | else |
236 | { | |
237 | char spec[1024]; /* Host:service spec */ | |
238 | ||
239 | ||
240 | snprintf(spec, sizeof(spec), "%s:smtp", mailtoSMTPServer); | |
241 | fp = cupsFileOpen(spec, "s"); | |
242 | } | |
243 | ||
244 | if (!fp) | |
245 | { | |
246 | fprintf(stderr, "ERROR: Unable to connect to SMTP server \"%s\"!\n", | |
247 | mailtoSMTPServer); | |
248 | return; | |
249 | } | |
250 | ||
251 | fprintf(stderr, "DEBUG: Connected to \"%s\"...\n", mailtoSMTPServer); | |
252 | ||
077bd665 MH |
253 | if (!cupsFileGets(fp, response, sizeof(response)) || atoi(response) >= 500) |
254 | goto smtp_error; | |
255 | fprintf(stderr, "DEBUG: <<< %s\n", response); | |
256 | ||
757d2cad | 257 | cupsFilePrintf(fp, "HELO %s\r\n", |
258 | httpGetHostname(NULL, hostbuf, sizeof(hostbuf))); | |
fa73b229 | 259 | fprintf(stderr, "DEBUG: >>> HELO %s\n", hostbuf); |
260 | ||
261 | if (!cupsFileGets(fp, response, sizeof(response)) || atoi(response) >= 500) | |
262 | goto smtp_error; | |
263 | fprintf(stderr, "DEBUG: <<< %s\n", response); | |
264 | ||
265 | cupsFilePrintf(fp, "MAIL FROM:%s\r\n", mailtoFrom); | |
266 | fprintf(stderr, "DEBUG: >>> MAIL FROM:%s\n", mailtoFrom); | |
267 | ||
268 | if (!cupsFileGets(fp, response, sizeof(response)) || atoi(response) >= 500) | |
269 | goto smtp_error; | |
270 | fprintf(stderr, "DEBUG: <<< %s\n", response); | |
271 | ||
272 | cupsFilePrintf(fp, "RCPT TO:%s\r\n", to); | |
273 | fprintf(stderr, "DEBUG: >>> RCPT TO:%s\n", to); | |
274 | ||
275 | if (!cupsFileGets(fp, response, sizeof(response)) || atoi(response) >= 500) | |
276 | goto smtp_error; | |
277 | fprintf(stderr, "DEBUG: <<< %s\n", response); | |
278 | ||
279 | cupsFilePuts(fp, "DATA\r\n"); | |
280 | fputs("DEBUG: DATA\n", stderr); | |
281 | ||
282 | if (!cupsFileGets(fp, response, sizeof(response)) || atoi(response) >= 500) | |
283 | goto smtp_error; | |
284 | fprintf(stderr, "DEBUG: <<< %s\n", response); | |
285 | ||
286 | nl = "\r\n"; | |
287 | } | |
288 | ||
289 | /* | |
290 | * Send the message... | |
291 | */ | |
292 | ||
293 | cupsFilePrintf(fp, "Date: %s%s", httpGetDateString(time(NULL)), nl); | |
294 | cupsFilePrintf(fp, "From: %s%s", mailtoFrom, nl); | |
295 | cupsFilePrintf(fp, "Subject: %s %s%s", mailtoSubject, subject, nl); | |
296 | if (mailtoReplyTo[0]) | |
297 | { | |
298 | cupsFilePrintf(fp, "Sender: %s%s", mailtoReplyTo, nl); | |
299 | cupsFilePrintf(fp, "Reply-To: %s%s", mailtoReplyTo, nl); | |
300 | } | |
301 | cupsFilePrintf(fp, "To: %s%s", to, nl); | |
302 | if (mailtoCc[0]) | |
303 | cupsFilePrintf(fp, "Cc: %s%s", mailtoCc, nl); | |
304 | cupsFilePrintf(fp, "Content-Type: text/plain%s", nl); | |
305 | cupsFilePuts(fp, nl); | |
306 | cupsFilePrintf(fp, "%s%s", text, nl); | |
ae71f5de | 307 | cupsFilePrintf(fp, ".%s", nl); |
fa73b229 | 308 | |
309 | /* | |
310 | * Close the connection to the mail server... | |
311 | */ | |
312 | ||
313 | if (mailtoSendmail[0]) | |
314 | { | |
315 | /* | |
316 | * Close the pipe and wait for the sendmail command to finish... | |
317 | */ | |
318 | ||
319 | int status; /* Exit status */ | |
320 | ||
321 | ||
322 | cupsFileClose(fp); | |
323 | ||
e60ec91f MS |
324 | while (wait(&status)) |
325 | { | |
326 | if (errno != EINTR) | |
327 | { | |
328 | fprintf(stderr, "DEBUG: Unable to get child status: %s\n", | |
329 | strerror(errno)); | |
330 | status = 0; | |
331 | break; | |
332 | } | |
333 | } | |
fa73b229 | 334 | |
335 | /* | |
336 | * Report any non-zero status... | |
337 | */ | |
338 | ||
339 | if (status) | |
340 | { | |
341 | if (WIFEXITED(status)) | |
342 | fprintf(stderr, "ERROR: Sendmail command returned status %d!\n", | |
343 | WEXITSTATUS(status)); | |
344 | else | |
345 | fprintf(stderr, "ERROR: Sendmail command crashed on signal %d!\n", | |
346 | WTERMSIG(status)); | |
347 | } | |
348 | } | |
349 | else | |
350 | { | |
351 | /* | |
352 | * Finish up the SMTP submission and close the connection... | |
353 | */ | |
354 | ||
355 | if (!cupsFileGets(fp, response, sizeof(response)) || atoi(response) >= 500) | |
356 | goto smtp_error; | |
357 | fprintf(stderr, "DEBUG: <<< %s\n", response); | |
358 | ||
359 | /* | |
360 | * Process SMTP errors here... | |
361 | */ | |
362 | ||
363 | smtp_error: | |
364 | ||
365 | cupsFilePuts(fp, "QUIT\r\n"); | |
366 | fputs("DEBUG: QUIT\n", stderr); | |
367 | ||
368 | if (!cupsFileGets(fp, response, sizeof(response)) || atoi(response) >= 500) | |
c7017ecc MS |
369 | fprintf(stderr, "ERROR: Got \"%s\" trying to QUIT connection.\n", |
370 | response); | |
371 | else | |
372 | fprintf(stderr, "DEBUG: <<< %s\n", response); | |
fa73b229 | 373 | |
374 | cupsFileClose(fp); | |
375 | ||
376 | fprintf(stderr, "DEBUG: Closed connection to \"%s\"...\n", | |
377 | mailtoSMTPServer); | |
378 | } | |
379 | } | |
380 | ||
381 | ||
382 | /* | |
383 | * 'load_configuration()' - Load the mailto.conf file. | |
384 | */ | |
385 | ||
386 | int /* I - 1 on success, 0 on failure */ | |
387 | load_configuration(void) | |
388 | { | |
389 | cups_file_t *fp; /* mailto.conf file */ | |
390 | const char *server_root, /* CUPS_SERVERROOT environment variable */ | |
391 | *server_admin; /* SERVER_ADMIN environment variable */ | |
392 | char line[1024], /* Line from file */ | |
393 | *value; /* Value for directive */ | |
394 | int linenum; /* Line number in file */ | |
395 | ||
396 | ||
397 | /* | |
398 | * Initialize defaults... | |
399 | */ | |
400 | ||
401 | mailtoCc[0] = '\0'; | |
402 | ||
403 | if ((server_admin = getenv("SERVER_ADMIN")) != NULL) | |
404 | strlcpy(mailtoFrom, server_admin, sizeof(mailtoFrom)); | |
405 | else | |
406 | snprintf(mailtoFrom, sizeof(mailtoFrom), "root@%s", | |
757d2cad | 407 | httpGetHostname(NULL, line, sizeof(line))); |
fa73b229 | 408 | |
409 | strlcpy(mailtoSendmail, "/usr/sbin/sendmail", sizeof(mailtoSendmail)); | |
410 | ||
411 | mailtoSMTPServer[0] = '\0'; | |
412 | ||
413 | mailtoSubject[0] = '\0'; | |
414 | ||
415 | /* | |
416 | * Try loading the config file... | |
417 | */ | |
418 | ||
419 | if ((server_root = getenv("CUPS_SERVERROOT")) == NULL) | |
420 | server_root = CUPS_SERVERROOT; | |
421 | ||
422 | snprintf(line, sizeof(line), "%s/mailto.conf", server_root); | |
423 | ||
424 | if ((fp = cupsFileOpen(line, "r")) == NULL) | |
425 | { | |
e60ec91f MS |
426 | if (errno != ENOENT) |
427 | { | |
428 | fprintf(stderr, "ERROR: Unable to open \"%s\" - %s\n", line, | |
429 | strerror(errno)); | |
430 | return (1); | |
431 | } | |
432 | else | |
433 | return (0); | |
fa73b229 | 434 | } |
435 | ||
436 | linenum = 0; | |
437 | ||
438 | while (cupsFileGetConf(fp, line, sizeof(line), &value, &linenum)) | |
439 | { | |
440 | if (!value) | |
441 | { | |
442 | fprintf(stderr, "ERROR: No value found for %s directive on line %d!\n", | |
443 | line, linenum); | |
444 | cupsFileClose(fp); | |
445 | return (0); | |
446 | } | |
447 | ||
88f9aafc | 448 | if (!_cups_strcasecmp(line, "Cc")) |
fa73b229 | 449 | strlcpy(mailtoCc, value, sizeof(mailtoCc)); |
88f9aafc | 450 | else if (!_cups_strcasecmp(line, "From")) |
fa73b229 | 451 | strlcpy(mailtoFrom, value, sizeof(mailtoFrom)); |
88f9aafc | 452 | else if (!_cups_strcasecmp(line, "Sendmail")) |
fa73b229 | 453 | { |
454 | strlcpy(mailtoSendmail, value, sizeof(mailtoSendmail)); | |
455 | mailtoSMTPServer[0] = '\0'; | |
456 | } | |
88f9aafc | 457 | else if (!_cups_strcasecmp(line, "SMTPServer")) |
fa73b229 | 458 | { |
459 | mailtoSendmail[0] = '\0'; | |
460 | strlcpy(mailtoSMTPServer, value, sizeof(mailtoSMTPServer)); | |
461 | } | |
88f9aafc | 462 | else if (!_cups_strcasecmp(line, "Subject")) |
fa73b229 | 463 | strlcpy(mailtoSubject, value, sizeof(mailtoSubject)); |
464 | else | |
465 | { | |
466 | fprintf(stderr, | |
467 | "ERROR: Unknown configuration directive \"%s\" on line %d!\n", | |
468 | line, linenum); | |
469 | } | |
470 | } | |
471 | ||
472 | /* | |
473 | * Close file and return... | |
474 | */ | |
475 | ||
476 | cupsFileClose(fp); | |
477 | ||
478 | return (1); | |
479 | } | |
480 | ||
481 | ||
482 | /* | |
483 | * 'pipe_sendmail()' - Open a pipe to sendmail... | |
484 | */ | |
485 | ||
486 | cups_file_t * /* O - CUPS file */ | |
487 | pipe_sendmail(const char *to) /* I - To: address */ | |
488 | { | |
489 | cups_file_t *fp; /* CUPS file */ | |
490 | int pid; /* Process ID */ | |
491 | int pipefds[2]; /* Pipe file descriptors */ | |
492 | int argc; /* Number of arguments */ | |
493 | char *argv[100], /* Argument array */ | |
494 | line[1024], /* Sendmail command + args */ | |
495 | *lineptr; /* Pointer into line */ | |
496 | ||
497 | ||
498 | /* | |
499 | * First break the mailtoSendmail string into arguments... | |
500 | */ | |
501 | ||
502 | strlcpy(line, mailtoSendmail, sizeof(line)); | |
503 | argv[0] = line; | |
504 | argc = 1; | |
505 | ||
506 | for (lineptr = strchr(line, ' '); lineptr; lineptr = strchr(lineptr, ' ')) | |
507 | { | |
508 | while (*lineptr == ' ') | |
509 | *lineptr++ = '\0'; | |
510 | ||
511 | if (*lineptr) | |
512 | { | |
513 | /* | |
514 | * Point to the next argument... | |
515 | */ | |
516 | ||
517 | argv[argc ++] = lineptr; | |
518 | ||
519 | /* | |
520 | * Stop if we have too many... | |
521 | */ | |
522 | ||
523 | if (argc >= (int)(sizeof(argv) / sizeof(argv[0]) - 2)) | |
524 | break; | |
525 | } | |
526 | } | |
527 | ||
528 | argv[argc ++] = (char *)to; | |
529 | argv[argc] = NULL; | |
530 | ||
531 | /* | |
532 | * Create the pipe... | |
533 | */ | |
534 | ||
535 | if (pipe(pipefds)) | |
536 | { | |
537 | perror("ERROR: Unable to create pipe"); | |
538 | return (NULL); | |
539 | } | |
540 | ||
541 | /* | |
542 | * Then run the command... | |
543 | */ | |
544 | ||
545 | if ((pid = fork()) == 0) | |
546 | { | |
547 | /* | |
548 | * Child goes here - redirect stdin to the input side of the pipe, | |
549 | * redirect stdout to stderr, and exec... | |
550 | */ | |
551 | ||
552 | close(0); | |
553 | dup(pipefds[0]); | |
554 | ||
555 | close(1); | |
556 | dup(2); | |
557 | ||
558 | close(pipefds[0]); | |
559 | close(pipefds[1]); | |
560 | ||
561 | execvp(argv[0], argv); | |
562 | exit(errno); | |
563 | } | |
564 | else if (pid < 0) | |
565 | { | |
566 | /* | |
567 | * Unable to fork - error out... | |
568 | */ | |
569 | ||
570 | perror("ERROR: Unable to fork command"); | |
571 | ||
572 | close(pipefds[0]); | |
573 | close(pipefds[1]); | |
574 | ||
575 | return (NULL); | |
576 | } | |
577 | ||
578 | /* | |
579 | * Create a CUPS file using the output side of the pipe and close the | |
580 | * input side... | |
581 | */ | |
582 | ||
583 | close(pipefds[0]); | |
584 | ||
585 | if ((fp = cupsFileOpenFd(pipefds[1], "w")) == NULL) | |
586 | { | |
587 | int status; /* Status of command */ | |
588 | ||
589 | ||
590 | close(pipefds[1]); | |
591 | wait(&status); | |
592 | } | |
593 | ||
594 | return (fp); | |
595 | } | |
596 | ||
597 | ||
598 | /* | |
599 | * 'print_attributes()' - Print the attributes in a request... | |
600 | */ | |
601 | ||
602 | void | |
603 | print_attributes(ipp_t *ipp, /* I - IPP request */ | |
604 | int indent) /* I - Indentation */ | |
605 | { | |
fa73b229 | 606 | ipp_tag_t group; /* Current group */ |
607 | ipp_attribute_t *attr; /* Current attribute */ | |
e60ec91f | 608 | char buffer[1024]; /* Value buffer */ |
fa73b229 | 609 | |
610 | ||
611 | for (group = IPP_TAG_ZERO, attr = ipp->attrs; attr; attr = attr->next) | |
612 | { | |
613 | if ((attr->group_tag == IPP_TAG_ZERO && indent <= 8) || !attr->name) | |
614 | { | |
615 | group = IPP_TAG_ZERO; | |
616 | fputc('\n', stderr); | |
617 | continue; | |
618 | } | |
619 | ||
620 | if (group != attr->group_tag) | |
621 | { | |
622 | group = attr->group_tag; | |
623 | ||
e60ec91f | 624 | fprintf(stderr, "DEBUG: %*s%s:\n\n", indent - 4, "", ippTagString(group)); |
fa73b229 | 625 | } |
626 | ||
a2326b5b | 627 | ippAttributeString(attr, buffer, sizeof(buffer)); |
fa73b229 | 628 | |
e60ec91f MS |
629 | fprintf(stderr, "DEBUG: %*s%s (%s%s) %s", indent, "", attr->name, |
630 | attr->num_values > 1 ? "1setOf " : "", | |
631 | ippTagString(attr->value_tag), buffer); | |
fa73b229 | 632 | } |
ef416fc2 | 633 | } |