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Commit | Line | Data |
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1 | /* | |
2 | * Main loop for the CUPS scheduler. | |
3 | * | |
4 | * Copyright © 2007-2018 by Apple Inc. | |
5 | * Copyright © 1997-2007 by Easy Software Products, all rights reserved. | |
6 | * | |
7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more | |
8 | * information. | |
9 | */ | |
10 | ||
11 | /* | |
12 | * Include necessary headers... | |
13 | */ | |
14 | ||
15 | #define _MAIN_C_ | |
16 | #include "cupsd.h" | |
17 | #include <sys/resource.h> | |
18 | #ifdef __APPLE__ | |
19 | # include <xpc/xpc.h> | |
20 | # include <pthread/qos.h> | |
21 | #endif /* __APPLE__ */ | |
22 | #ifdef HAVE_ASL_H | |
23 | # include <asl.h> | |
24 | #elif defined(HAVE_SYSTEMD_SD_JOURNAL_H) | |
25 | # define SD_JOURNAL_SUPPRESS_LOCATION | |
26 | # include <systemd/sd-journal.h> | |
27 | #endif /* HAVE_ASL_H */ | |
28 | #include <syslog.h> | |
29 | #include <grp.h> | |
30 | ||
31 | #ifdef HAVE_LAUNCH_H | |
32 | # include <launch.h> | |
33 | #endif /* HAVE_LAUNCH_H */ | |
34 | ||
35 | #ifdef HAVE_SYSTEMD | |
36 | # include <systemd/sd-daemon.h> | |
37 | #endif /* HAVE_SYSTEMD */ | |
38 | ||
39 | #ifdef HAVE_ONDEMAND | |
40 | # define CUPS_KEEPALIVE CUPS_CACHEDIR "/org.cups.cupsd" | |
41 | /* Name of the KeepAlive file */ | |
42 | #endif /* HAVE_ONDEMAND */ | |
43 | ||
44 | #if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO) | |
45 | # include <malloc.h> | |
46 | #endif /* HAVE_MALLOC_H && HAVE_MALLINFO */ | |
47 | ||
48 | #ifdef HAVE_NOTIFY_H | |
49 | # include <notify.h> | |
50 | #endif /* HAVE_NOTIFY_H */ | |
51 | ||
52 | #ifdef HAVE_DBUS | |
53 | # include <dbus/dbus.h> | |
54 | #endif /* HAVE_DBUS */ | |
55 | ||
56 | #ifdef HAVE_SYS_PARAM_H | |
57 | # include <sys/param.h> | |
58 | #endif /* HAVE_SYS_PARAM_H */ | |
59 | ||
60 | ||
61 | /* | |
62 | * Local functions... | |
63 | */ | |
64 | ||
65 | static void parent_handler(int sig); | |
66 | static void process_children(void); | |
67 | static void sigchld_handler(int sig); | |
68 | static void sighup_handler(int sig); | |
69 | static void sigterm_handler(int sig); | |
70 | static long select_timeout(int fds); | |
71 | static void service_checkin(void); | |
72 | static void service_checkout(int shutdown); | |
73 | static void usage(int status) _CUPS_NORETURN; | |
74 | ||
75 | ||
76 | /* | |
77 | * Local globals... | |
78 | */ | |
79 | ||
80 | static int parent_signal = 0; | |
81 | /* Set to signal number from child */ | |
82 | static int holdcount = 0; /* Number of times "hold" was called */ | |
83 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
84 | static sigset_t holdmask; /* Old POSIX signal mask */ | |
85 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
86 | static int dead_children = 0; | |
87 | /* Dead children? */ | |
88 | static int stop_scheduler = 0; | |
89 | /* Should the scheduler stop? */ | |
90 | static time_t local_timeout = 0; | |
91 | /* Next local printer timeout */ | |
92 | ||
93 | ||
94 | /* | |
95 | * 'main()' - Main entry for the CUPS scheduler. | |
96 | */ | |
97 | ||
98 | int /* O - Exit status */ | |
99 | main(int argc, /* I - Number of command-line args */ | |
100 | char *argv[]) /* I - Command-line arguments */ | |
101 | { | |
102 | int i; /* Looping var */ | |
103 | char *opt; /* Option character */ | |
104 | int close_all = 1, /* Close all file descriptors? */ | |
105 | disconnect = 1, /* Disconnect from controlling terminal? */ | |
106 | fg = 0, /* Run in foreground? */ | |
107 | run_as_child = 0, | |
108 | /* Running as child process? */ | |
109 | print_profile = 0; | |
110 | /* Print the sandbox profile to stdout? */ | |
111 | int fds; /* Number of ready descriptors */ | |
112 | cupsd_client_t *con; /* Current client */ | |
113 | cupsd_job_t *job; /* Current job */ | |
114 | cupsd_listener_t *lis; /* Current listener */ | |
115 | time_t current_time, /* Current time */ | |
116 | activity, /* Client activity timer */ | |
117 | senddoc_time, /* Send-Document time */ | |
118 | expire_time, /* Subscription expire time */ | |
119 | report_time, /* Malloc/client/job report time */ | |
120 | event_time; /* Last event notification time */ | |
121 | long timeout; /* Timeout for cupsdDoSelect() */ | |
122 | struct rlimit limit; /* Runtime limit */ | |
123 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
124 | struct sigaction action; /* Actions for POSIX signals */ | |
125 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
126 | #ifdef __APPLE__ | |
127 | int use_sysman = 1; /* Use system management functions? */ | |
128 | #else | |
129 | time_t netif_time = 0; /* Time since last network update */ | |
130 | #endif /* __APPLE__ */ | |
131 | #if defined(HAVE_ONDEMAND) | |
132 | int service_idle_exit = 0; | |
133 | /* Idle exit on select timeout? */ | |
134 | #endif /* HAVE_ONDEMAND */ | |
135 | ||
136 | ||
137 | #ifdef HAVE_GETEUID | |
138 | /* | |
139 | * Check for setuid invocation, which we do not support! | |
140 | */ | |
141 | ||
142 | if (getuid() != geteuid()) | |
143 | { | |
144 | fputs("cupsd: Cannot run as a setuid program.\n", stderr); | |
145 | return (1); | |
146 | } | |
147 | #endif /* HAVE_GETEUID */ | |
148 | ||
149 | /* | |
150 | * Check for command-line arguments... | |
151 | */ | |
152 | ||
153 | fg = 0; | |
154 | ||
155 | for (i = 1; i < argc; i ++) | |
156 | { | |
157 | if (!strcmp(argv[i], "--help")) | |
158 | usage(0); | |
159 | else if (argv[i][0] == '-') | |
160 | { | |
161 | for (opt = argv[i] + 1; *opt != '\0'; opt ++) | |
162 | { | |
163 | switch (*opt) | |
164 | { | |
165 | case 'C' : /* Run as child with config file */ | |
166 | run_as_child = 1; | |
167 | fg = 1; | |
168 | close_all = 0; | |
169 | ||
170 | case 'c' : /* Configuration file */ | |
171 | i ++; | |
172 | if (i >= argc) | |
173 | { | |
174 | _cupsLangPuts(stderr, _("cupsd: Expected config filename " | |
175 | "after \"-c\" option.")); | |
176 | usage(1); | |
177 | } | |
178 | ||
179 | if (argv[i][0] == '/') | |
180 | { | |
181 | /* | |
182 | * Absolute directory... | |
183 | */ | |
184 | ||
185 | cupsdSetString(&ConfigurationFile, argv[i]); | |
186 | } | |
187 | else | |
188 | { | |
189 | /* | |
190 | * Relative directory... | |
191 | */ | |
192 | ||
193 | char *current; /* Current directory */ | |
194 | ||
195 | /* | |
196 | * Allocate a buffer for the current working directory to | |
197 | * reduce run-time stack usage; this approximates the | |
198 | * behavior of some implementations of getcwd() when they | |
199 | * are passed a NULL pointer. | |
200 | */ | |
201 | ||
202 | if ((current = malloc(1024)) == NULL) | |
203 | { | |
204 | _cupsLangPuts(stderr, | |
205 | _("cupsd: Unable to get current directory.")); | |
206 | return (1); | |
207 | } | |
208 | ||
209 | if (!getcwd(current, 1024)) | |
210 | { | |
211 | _cupsLangPuts(stderr, | |
212 | _("cupsd: Unable to get current directory.")); | |
213 | free(current); | |
214 | return (1); | |
215 | } | |
216 | ||
217 | cupsdSetStringf(&ConfigurationFile, "%s/%s", current, argv[i]); | |
218 | free(current); | |
219 | } | |
220 | break; | |
221 | ||
222 | case 'f' : /* Run in foreground... */ | |
223 | fg = 1; | |
224 | disconnect = 0; | |
225 | close_all = 0; | |
226 | break; | |
227 | ||
228 | case 'F' : /* Run in foreground, but disconnect from terminal... */ | |
229 | fg = 1; | |
230 | close_all = 0; | |
231 | break; | |
232 | ||
233 | case 'h' : /* Show usage/help */ | |
234 | usage(0); | |
235 | break; | |
236 | ||
237 | case 'l' : /* Started by launchd/systemd/upstart... */ | |
238 | #ifdef HAVE_ONDEMAND | |
239 | OnDemand = 1; | |
240 | fg = 1; | |
241 | close_all = 0; | |
242 | disconnect = 0; | |
243 | #else | |
244 | _cupsLangPuts(stderr, _("cupsd: On-demand support not compiled " | |
245 | "in, running in normal mode.")); | |
246 | fg = 0; | |
247 | disconnect = 1; | |
248 | close_all = 1; | |
249 | #endif /* HAVE_ONDEMAND */ | |
250 | break; | |
251 | ||
252 | case 'p' : /* Stop immediately for profiling */ | |
253 | fputs("cupsd: -p (startup profiling) is for internal testing " | |
254 | "use only!\n", stderr); | |
255 | stop_scheduler = 1; | |
256 | fg = 1; | |
257 | disconnect = 0; | |
258 | close_all = 0; | |
259 | break; | |
260 | ||
261 | case 'P' : /* Disable security profiles */ | |
262 | fputs("cupsd: -P (disable sandboxing) is for internal testing use only.\n", stderr); | |
263 | UseSandboxing = 0; | |
264 | break; | |
265 | ||
266 | case 's' : /* Set cups-files.conf location */ | |
267 | i ++; | |
268 | if (i >= argc) | |
269 | { | |
270 | _cupsLangPuts(stderr, _("cupsd: Expected cups-files.conf " | |
271 | "filename after \"-s\" option.")); | |
272 | usage(1); | |
273 | } | |
274 | ||
275 | if (argv[i][0] != '/') | |
276 | { | |
277 | /* | |
278 | * Relative filename not allowed... | |
279 | */ | |
280 | ||
281 | _cupsLangPuts(stderr, _("cupsd: Relative cups-files.conf " | |
282 | "filename not allowed.")); | |
283 | usage(1); | |
284 | } | |
285 | ||
286 | cupsdSetString(&CupsFilesFile, argv[i]); | |
287 | break; | |
288 | ||
289 | #ifdef __APPLE__ | |
290 | case 'S' : /* Disable system management functions */ | |
291 | fputs("cupsd: -S (disable system management) for internal " | |
292 | "testing use only!\n", stderr); | |
293 | use_sysman = 0; | |
294 | break; | |
295 | #endif /* __APPLE__ */ | |
296 | ||
297 | case 't' : /* Test the cupsd.conf file... */ | |
298 | TestConfigFile = 1; | |
299 | fg = 1; | |
300 | disconnect = 0; | |
301 | close_all = 0; | |
302 | break; | |
303 | ||
304 | case 'T' : /* Print security profile */ | |
305 | print_profile = 1; | |
306 | fg = 1; | |
307 | disconnect = 0; | |
308 | close_all = 0; | |
309 | break; | |
310 | ||
311 | default : /* Unknown option */ | |
312 | _cupsLangPrintf(stderr, _("cupsd: Unknown option \"%c\" - " | |
313 | "aborting."), *opt); | |
314 | usage(1); | |
315 | break; | |
316 | } | |
317 | } | |
318 | } | |
319 | else | |
320 | { | |
321 | _cupsLangPrintf(stderr, _("cupsd: Unknown argument \"%s\" - aborting."), | |
322 | argv[i]); | |
323 | usage(1); | |
324 | } | |
325 | } | |
326 | ||
327 | if (!ConfigurationFile) | |
328 | cupsdSetString(&ConfigurationFile, CUPS_SERVERROOT "/cupsd.conf"); | |
329 | ||
330 | if (!CupsFilesFile) | |
331 | { | |
332 | char *filename, /* Copy of cupsd.conf filename */ | |
333 | *slash; /* Final slash in cupsd.conf filename */ | |
334 | size_t len; /* Size of buffer */ | |
335 | ||
336 | len = strlen(ConfigurationFile) + 15; | |
337 | if ((filename = malloc(len)) == NULL) | |
338 | { | |
339 | _cupsLangPrintf(stderr, | |
340 | _("cupsd: Unable to get path to " | |
341 | "cups-files.conf file.")); | |
342 | return (1); | |
343 | } | |
344 | ||
345 | strlcpy(filename, ConfigurationFile, len); | |
346 | if ((slash = strrchr(filename, '/')) == NULL) | |
347 | { | |
348 | _cupsLangPrintf(stderr, | |
349 | _("cupsd: Unable to get path to " | |
350 | "cups-files.conf file.")); | |
351 | return (1); | |
352 | } | |
353 | ||
354 | strlcpy(slash, "/cups-files.conf", len - (size_t)(slash - filename)); | |
355 | cupsdSetString(&CupsFilesFile, filename); | |
356 | free(filename); | |
357 | } | |
358 | ||
359 | if (disconnect) | |
360 | { | |
361 | /* | |
362 | * Make sure we aren't tying up any filesystems... | |
363 | */ | |
364 | ||
365 | chdir("/"); | |
366 | ||
367 | /* | |
368 | * Disconnect from the controlling terminal... | |
369 | */ | |
370 | ||
371 | setsid(); | |
372 | } | |
373 | ||
374 | if (close_all) | |
375 | { | |
376 | /* | |
377 | * Close all open files... | |
378 | */ | |
379 | ||
380 | getrlimit(RLIMIT_NOFILE, &limit); | |
381 | ||
382 | for (i = 0; i < (int)limit.rlim_cur && i < 1024; i ++) | |
383 | close(i); | |
384 | ||
385 | /* | |
386 | * Redirect stdin/out/err to /dev/null... | |
387 | */ | |
388 | ||
389 | if ((i = open("/dev/null", O_RDONLY)) != 0) | |
390 | { | |
391 | dup2(i, 0); | |
392 | close(i); | |
393 | } | |
394 | ||
395 | if ((i = open("/dev/null", O_WRONLY)) != 1) | |
396 | { | |
397 | dup2(i, 1); | |
398 | close(i); | |
399 | } | |
400 | ||
401 | if ((i = open("/dev/null", O_WRONLY)) != 2) | |
402 | { | |
403 | dup2(i, 2); | |
404 | close(i); | |
405 | } | |
406 | } | |
407 | else | |
408 | LogStderr = cupsFileStderr(); | |
409 | ||
410 | /* | |
411 | * Run in the background as needed... | |
412 | */ | |
413 | ||
414 | if (!fg) | |
415 | { | |
416 | /* | |
417 | * Setup signal handlers for the parent... | |
418 | */ | |
419 | ||
420 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
421 | sigset(SIGUSR1, parent_handler); | |
422 | sigset(SIGCHLD, parent_handler); | |
423 | ||
424 | sigset(SIGHUP, SIG_IGN); | |
425 | #elif defined(HAVE_SIGACTION) | |
426 | memset(&action, 0, sizeof(action)); | |
427 | sigemptyset(&action.sa_mask); | |
428 | sigaddset(&action.sa_mask, SIGUSR1); | |
429 | action.sa_handler = parent_handler; | |
430 | sigaction(SIGUSR1, &action, NULL); | |
431 | sigaction(SIGCHLD, &action, NULL); | |
432 | ||
433 | sigemptyset(&action.sa_mask); | |
434 | action.sa_handler = SIG_IGN; | |
435 | sigaction(SIGHUP, &action, NULL); | |
436 | #else | |
437 | signal(SIGUSR1, parent_handler); | |
438 | signal(SIGCLD, parent_handler); | |
439 | ||
440 | signal(SIGHUP, SIG_IGN); | |
441 | #endif /* HAVE_SIGSET */ | |
442 | ||
443 | if (fork() > 0) | |
444 | { | |
445 | /* | |
446 | * OK, wait for the child to startup and send us SIGUSR1 or to crash | |
447 | * and the OS send us SIGCHLD... We also need to ignore SIGHUP which | |
448 | * might be sent by the init script to restart the scheduler... | |
449 | */ | |
450 | ||
451 | for (; parent_signal == 0;) | |
452 | sleep(1); | |
453 | ||
454 | if (parent_signal == SIGUSR1) | |
455 | return (0); | |
456 | ||
457 | if (wait(&i) < 0) | |
458 | { | |
459 | perror("cupsd"); | |
460 | return (1); | |
461 | } | |
462 | else if (WIFEXITED(i)) | |
463 | { | |
464 | fprintf(stderr, "cupsd: Child exited with status %d\n", | |
465 | WEXITSTATUS(i)); | |
466 | return (2); | |
467 | } | |
468 | else | |
469 | { | |
470 | fprintf(stderr, "cupsd: Child exited on signal %d\n", WTERMSIG(i)); | |
471 | return (3); | |
472 | } | |
473 | } | |
474 | ||
475 | #if defined(__OpenBSD__) && OpenBSD < 201211 | |
476 | /* | |
477 | * Call _thread_sys_closefrom() so the child process doesn't reset the | |
478 | * parent's file descriptors to be blocking. This is a workaround for a | |
479 | * limitation of userland libpthread on older versions of OpenBSD. | |
480 | */ | |
481 | ||
482 | _thread_sys_closefrom(0); | |
483 | #endif /* __OpenBSD__ && OpenBSD < 201211 */ | |
484 | ||
485 | /* | |
486 | * Since many system libraries create fork-unsafe data on execution of a | |
487 | * program, we need to re-execute the background cupsd with the "-C" and "-s" | |
488 | * options to avoid problems. Unfortunately, we also have to assume that | |
489 | * argv[0] contains the name of the cupsd executable - there is no portable | |
490 | * way to get the real pathname... | |
491 | */ | |
492 | ||
493 | execlp(argv[0], argv[0], "-C", ConfigurationFile, "-s", CupsFilesFile, (char *)0); | |
494 | exit(errno); | |
495 | } | |
496 | ||
497 | /* | |
498 | * Let the system know we are busy while we bring up cupsd... | |
499 | */ | |
500 | ||
501 | cupsdSetBusyState(1); | |
502 | ||
503 | /* | |
504 | * Set the timezone info... | |
505 | */ | |
506 | ||
507 | tzset(); | |
508 | ||
509 | #ifdef LC_TIME | |
510 | setlocale(LC_TIME, ""); | |
511 | #endif /* LC_TIME */ | |
512 | ||
513 | #ifdef HAVE_DBUS_THREADS_INIT | |
514 | /* | |
515 | * Enable threading support for D-BUS... | |
516 | */ | |
517 | ||
518 | dbus_threads_init_default(); | |
519 | #endif /* HAVE_DBUS_THREADS_INIT */ | |
520 | ||
521 | /* | |
522 | * Set the maximum number of files... | |
523 | */ | |
524 | ||
525 | getrlimit(RLIMIT_NOFILE, &limit); | |
526 | ||
527 | #if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE) | |
528 | if (limit.rlim_max > FD_SETSIZE) | |
529 | MaxFDs = FD_SETSIZE; | |
530 | else | |
531 | #endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */ | |
532 | #ifdef RLIM_INFINITY | |
533 | if (limit.rlim_max == RLIM_INFINITY) | |
534 | MaxFDs = 16384; | |
535 | else | |
536 | #endif /* RLIM_INFINITY */ | |
537 | MaxFDs = limit.rlim_max; | |
538 | ||
539 | limit.rlim_cur = (rlim_t)MaxFDs; | |
540 | ||
541 | setrlimit(RLIMIT_NOFILE, &limit); | |
542 | ||
543 | cupsdStartSelect(); | |
544 | ||
545 | /* | |
546 | * Read configuration... | |
547 | */ | |
548 | ||
549 | if (!cupsdReadConfiguration()) | |
550 | return (1); | |
551 | else if (TestConfigFile) | |
552 | { | |
553 | printf("\"%s\" is OK.\n", CupsFilesFile); | |
554 | printf("\"%s\" is OK.\n", ConfigurationFile); | |
555 | return (0); | |
556 | } | |
557 | else if (print_profile) | |
558 | { | |
559 | cups_file_t *fp; /* File pointer */ | |
560 | const char *profile = cupsdCreateProfile(42, 0); | |
561 | /* Profile */ | |
562 | char line[1024]; /* Line from file */ | |
563 | ||
564 | ||
565 | if ((fp = cupsFileOpen(profile, "r")) == NULL) | |
566 | { | |
567 | printf("Unable to open profile file \"%s\": %s\n", profile ? profile : "(null)", strerror(errno)); | |
568 | return (1); | |
569 | } | |
570 | ||
571 | while (cupsFileGets(fp, line, sizeof(line))) | |
572 | puts(line); | |
573 | ||
574 | cupsFileClose(fp); | |
575 | ||
576 | return (0); | |
577 | } | |
578 | ||
579 | /* | |
580 | * Clean out old temp files and printer cache data. | |
581 | */ | |
582 | ||
583 | if (!strncmp(TempDir, RequestRoot, strlen(RequestRoot))) | |
584 | cupsdCleanFiles(TempDir, NULL); | |
585 | ||
586 | cupsdCleanFiles(CacheDir, "*.ipp"); | |
587 | ||
588 | /* | |
589 | * If we were started on demand by launchd or systemd get the listen sockets | |
590 | * file descriptors... | |
591 | */ | |
592 | ||
593 | service_checkin(); | |
594 | service_checkout(0); | |
595 | ||
596 | /* | |
597 | * Startup the server... | |
598 | */ | |
599 | ||
600 | httpInitialize(); | |
601 | ||
602 | cupsdStartServer(); | |
603 | ||
604 | /* | |
605 | * Catch hangup and child signals and ignore broken pipes... | |
606 | */ | |
607 | ||
608 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
609 | sigset(SIGCHLD, sigchld_handler); | |
610 | sigset(SIGHUP, sighup_handler); | |
611 | sigset(SIGPIPE, SIG_IGN); | |
612 | sigset(SIGTERM, sigterm_handler); | |
613 | #elif defined(HAVE_SIGACTION) | |
614 | memset(&action, 0, sizeof(action)); | |
615 | ||
616 | sigemptyset(&action.sa_mask); | |
617 | sigaddset(&action.sa_mask, SIGTERM); | |
618 | sigaddset(&action.sa_mask, SIGCHLD); | |
619 | action.sa_handler = sigchld_handler; | |
620 | sigaction(SIGCHLD, &action, NULL); | |
621 | ||
622 | sigemptyset(&action.sa_mask); | |
623 | sigaddset(&action.sa_mask, SIGHUP); | |
624 | action.sa_handler = sighup_handler; | |
625 | sigaction(SIGHUP, &action, NULL); | |
626 | ||
627 | sigemptyset(&action.sa_mask); | |
628 | action.sa_handler = SIG_IGN; | |
629 | sigaction(SIGPIPE, &action, NULL); | |
630 | ||
631 | sigemptyset(&action.sa_mask); | |
632 | sigaddset(&action.sa_mask, SIGTERM); | |
633 | sigaddset(&action.sa_mask, SIGCHLD); | |
634 | action.sa_handler = sigterm_handler; | |
635 | sigaction(SIGTERM, &action, NULL); | |
636 | #else | |
637 | signal(SIGCLD, sigchld_handler); /* No, SIGCLD isn't a typo... */ | |
638 | signal(SIGHUP, sighup_handler); | |
639 | signal(SIGPIPE, SIG_IGN); | |
640 | signal(SIGTERM, sigterm_handler); | |
641 | #endif /* HAVE_SIGSET */ | |
642 | ||
643 | /* | |
644 | * Initialize authentication certificates... | |
645 | */ | |
646 | ||
647 | cupsdInitCerts(); | |
648 | ||
649 | /* | |
650 | * If we are running in the background, signal the parent process that | |
651 | * we are up and running... | |
652 | */ | |
653 | ||
654 | if (!fg || run_as_child) | |
655 | { | |
656 | /* | |
657 | * Send a signal to the parent process, but only if the parent is | |
658 | * not PID 1 (init). This avoids accidentally shutting down the | |
659 | * system on OpenBSD if you CTRL-C the server before it is up... | |
660 | */ | |
661 | ||
662 | i = getppid(); /* Save parent PID to avoid race condition */ | |
663 | ||
664 | if (i != 1) | |
665 | kill(i, SIGUSR1); | |
666 | } | |
667 | ||
668 | #ifdef __APPLE__ | |
669 | /* | |
670 | * Start power management framework... | |
671 | */ | |
672 | ||
673 | if (use_sysman) | |
674 | cupsdStartSystemMonitor(); | |
675 | #endif /* __APPLE__ */ | |
676 | ||
677 | /* | |
678 | * Send server-started event... | |
679 | */ | |
680 | ||
681 | #ifdef HAVE_ONDEMAND | |
682 | if (OnDemand) | |
683 | cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started on demand."); | |
684 | else | |
685 | #endif /* HAVE_ONDEMAND */ | |
686 | if (fg) | |
687 | cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started in foreground."); | |
688 | else | |
689 | cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, "Scheduler started in background."); | |
690 | ||
691 | cupsdSetBusyState(0); | |
692 | ||
693 | /* | |
694 | * Start any pending print jobs... | |
695 | */ | |
696 | ||
697 | cupsdCheckJobs(); | |
698 | ||
699 | /* | |
700 | * Loop forever... | |
701 | */ | |
702 | ||
703 | current_time = time(NULL); | |
704 | event_time = current_time; | |
705 | expire_time = current_time; | |
706 | local_timeout = 0; | |
707 | fds = 1; | |
708 | report_time = 0; | |
709 | senddoc_time = current_time; | |
710 | ||
711 | while (!stop_scheduler) | |
712 | { | |
713 | /* | |
714 | * Check if there are dead children to handle... | |
715 | */ | |
716 | ||
717 | if (dead_children) | |
718 | process_children(); | |
719 | ||
720 | /* | |
721 | * Check if we need to load the server configuration file... | |
722 | */ | |
723 | ||
724 | if (NeedReload) | |
725 | { | |
726 | /* | |
727 | * Close any idle clients... | |
728 | */ | |
729 | ||
730 | if (cupsArrayCount(Clients) > 0) | |
731 | { | |
732 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); | |
733 | con; | |
734 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
735 | if (httpGetState(con->http) == HTTP_WAITING) | |
736 | cupsdCloseClient(con); | |
737 | else | |
738 | con->http->keep_alive = HTTP_KEEPALIVE_OFF; | |
739 | ||
740 | cupsdPauseListening(); | |
741 | } | |
742 | ||
743 | /* | |
744 | * Restart if all clients are closed and all jobs finished, or | |
745 | * if the reload timeout has elapsed... | |
746 | */ | |
747 | ||
748 | if ((cupsArrayCount(Clients) == 0 && | |
749 | (cupsArrayCount(PrintingJobs) == 0 || NeedReload != RELOAD_ALL)) || | |
750 | (time(NULL) - ReloadTime) >= ReloadTimeout) | |
751 | { | |
752 | /* | |
753 | * Shutdown the server... | |
754 | */ | |
755 | ||
756 | #ifdef HAVE_ONDEMAND | |
757 | if (OnDemand) | |
758 | break; | |
759 | #endif /* HAVE_ONDEMAND */ | |
760 | ||
761 | DoingShutdown = 1; | |
762 | ||
763 | cupsdStopServer(); | |
764 | ||
765 | /* | |
766 | * Read configuration... | |
767 | */ | |
768 | ||
769 | if (!cupsdReadConfiguration()) | |
770 | { | |
771 | #ifdef HAVE_SYSTEMD_SD_JOURNAL_H | |
772 | sd_journal_print(LOG_ERR, "Unable to read configuration file \"%s\" - exiting.", ConfigurationFile); | |
773 | #else | |
774 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting.", ConfigurationFile); | |
775 | #endif /* HAVE_SYSTEMD_SD_JOURNAL_H */ | |
776 | ||
777 | break; | |
778 | } | |
779 | ||
780 | /* | |
781 | * Startup the server... | |
782 | */ | |
783 | ||
784 | DoingShutdown = 0; | |
785 | ||
786 | cupsdStartServer(); | |
787 | ||
788 | /* | |
789 | * Send a server-restarted event... | |
790 | */ | |
791 | ||
792 | cupsdAddEvent(CUPSD_EVENT_SERVER_RESTARTED, NULL, NULL, | |
793 | "Scheduler restarted."); | |
794 | } | |
795 | } | |
796 | ||
797 | /* | |
798 | * Check for available input or ready output. If cupsdDoSelect() | |
799 | * returns 0 or -1, something bad happened and we should exit | |
800 | * immediately. | |
801 | * | |
802 | * Note that we at least have one listening socket open at all | |
803 | * times. | |
804 | */ | |
805 | ||
806 | if ((timeout = select_timeout(fds)) > 1 && LastEvent) | |
807 | timeout = 1; | |
808 | ||
809 | #ifdef HAVE_ONDEMAND | |
810 | /* | |
811 | * If no other work is scheduled and we're being controlled by launchd, | |
812 | * systemd, etc. then timeout after 'IdleExitTimeout' seconds of | |
813 | * inactivity... | |
814 | */ | |
815 | ||
816 | if (timeout == 86400 && OnDemand && IdleExitTimeout && | |
817 | # ifdef HAVE_SYSTEMD | |
818 | !WebInterface && | |
819 | # endif /* HAVE_SYSTEMD */ | |
820 | !cupsArrayCount(ActiveJobs)) | |
821 | { | |
822 | cupsd_printer_t *p = NULL; /* Current printer */ | |
823 | ||
824 | if (Browsing && BrowseLocalProtocols) | |
825 | { | |
826 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); p; p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
827 | if (p->shared) | |
828 | break; | |
829 | } | |
830 | ||
831 | if (!p) | |
832 | { | |
833 | timeout = IdleExitTimeout; | |
834 | service_idle_exit = 1; | |
835 | } | |
836 | } | |
837 | else | |
838 | service_idle_exit = 0; | |
839 | #endif /* HAVE_ONDEMAND */ | |
840 | ||
841 | if ((fds = cupsdDoSelect(timeout)) < 0) | |
842 | { | |
843 | /* | |
844 | * Got an error from select! | |
845 | */ | |
846 | ||
847 | #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) | |
848 | cupsd_printer_t *p; /* Current printer */ | |
849 | #endif /* HAVE_DNSSD || HAVE_AVAHI */ | |
850 | ||
851 | if (errno == EINTR) /* Just interrupted by a signal */ | |
852 | continue; | |
853 | ||
854 | /* | |
855 | * Log all sorts of debug info to help track down the problem. | |
856 | */ | |
857 | ||
858 | cupsdLogMessage(CUPSD_LOG_EMERG, "cupsdDoSelect() failed - %s!", | |
859 | strerror(errno)); | |
860 | ||
861 | for (i = 0, con = (cupsd_client_t *)cupsArrayFirst(Clients); | |
862 | con; | |
863 | i ++, con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
864 | cupsdLogMessage(CUPSD_LOG_EMERG, | |
865 | "Clients[%d] = %d, file = %d, state = %d", | |
866 | i, con->number, con->file, httpGetState(con->http)); | |
867 | ||
868 | for (i = 0, lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); | |
869 | lis; | |
870 | i ++, lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
871 | cupsdLogMessage(CUPSD_LOG_EMERG, "Listeners[%d] = %d", i, lis->fd); | |
872 | ||
873 | cupsdLogMessage(CUPSD_LOG_EMERG, "CGIPipes[0] = %d", CGIPipes[0]); | |
874 | ||
875 | #ifdef __APPLE__ | |
876 | cupsdLogMessage(CUPSD_LOG_EMERG, "SysEventPipes[0] = %d", | |
877 | SysEventPipes[0]); | |
878 | #endif /* __APPLE__ */ | |
879 | ||
880 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
881 | job; | |
882 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
883 | cupsdLogMessage(CUPSD_LOG_EMERG, "Jobs[%d] = %d < [%d %d] > [%d %d]", | |
884 | job->id, | |
885 | job->status_buffer ? job->status_buffer->fd : -1, | |
886 | job->print_pipes[0], job->print_pipes[1], | |
887 | job->back_pipes[0], job->back_pipes[1]); | |
888 | ||
889 | #if defined(HAVE_DNSSD) || defined(HAVE_AVAHI) | |
890 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
891 | p; | |
892 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
893 | cupsdLogMessage(CUPSD_LOG_EMERG, "printer[%s] reg_name=\"%s\"", p->name, | |
894 | p->reg_name ? p->reg_name : "(null)"); | |
895 | #endif /* HAVE_DNSSD || HAVE_AVAHI */ | |
896 | ||
897 | break; | |
898 | } | |
899 | ||
900 | current_time = time(NULL); | |
901 | ||
902 | /* | |
903 | * Write dirty config/state files... | |
904 | */ | |
905 | ||
906 | if (DirtyCleanTime && current_time >= DirtyCleanTime) | |
907 | cupsdCleanDirty(); | |
908 | ||
909 | #ifdef __APPLE__ | |
910 | /* | |
911 | * If we are going to sleep and still have pending jobs, stop them after | |
912 | * a period of time... | |
913 | */ | |
914 | ||
915 | if (SleepJobs > 0 && current_time >= SleepJobs && | |
916 | cupsArrayCount(PrintingJobs) > 0) | |
917 | { | |
918 | SleepJobs = 0; | |
919 | cupsdStopAllJobs(CUPSD_JOB_DEFAULT, 5); | |
920 | } | |
921 | #endif /* __APPLE__ */ | |
922 | ||
923 | #ifndef __APPLE__ | |
924 | /* | |
925 | * Update the network interfaces once a minute... | |
926 | */ | |
927 | ||
928 | if ((current_time - netif_time) >= 60) | |
929 | { | |
930 | netif_time = current_time; | |
931 | NetIFUpdate = 1; | |
932 | } | |
933 | #endif /* !__APPLE__ */ | |
934 | ||
935 | #ifdef HAVE_ONDEMAND | |
936 | /* | |
937 | * If no other work was scheduled and we're being controlled by launchd, | |
938 | * systemd, or upstart then timeout after 'LaunchdTimeout' seconds of | |
939 | * inactivity... | |
940 | */ | |
941 | ||
942 | if (!fds && service_idle_exit) | |
943 | { | |
944 | cupsdLogMessage(CUPSD_LOG_INFO, | |
945 | "Printer sharing is off and there are no jobs pending, " | |
946 | "will restart on demand."); | |
947 | stop_scheduler = 1; | |
948 | break; | |
949 | } | |
950 | #endif /* HAVE_ONDEMAND */ | |
951 | ||
952 | /* | |
953 | * Resume listening for new connections as needed... | |
954 | */ | |
955 | ||
956 | if (ListeningPaused && ListeningPaused <= current_time && | |
957 | cupsArrayCount(Clients) < MaxClients) | |
958 | cupsdResumeListening(); | |
959 | ||
960 | /* | |
961 | * Expire subscriptions and unload completed jobs as needed... | |
962 | */ | |
963 | ||
964 | if (current_time > expire_time) | |
965 | { | |
966 | if (cupsArrayCount(Subscriptions) > 0) | |
967 | cupsdExpireSubscriptions(NULL, NULL); | |
968 | ||
969 | cupsdUnloadCompletedJobs(); | |
970 | ||
971 | expire_time = current_time; | |
972 | } | |
973 | ||
974 | /* | |
975 | * Delete stale local printers... | |
976 | */ | |
977 | ||
978 | if (current_time >= local_timeout) | |
979 | { | |
980 | cupsdDeleteTemporaryPrinters(0); | |
981 | local_timeout = 0; | |
982 | } | |
983 | ||
984 | #ifndef HAVE_AUTHORIZATION_H | |
985 | /* | |
986 | * Update the root certificate once every 5 minutes if we have client | |
987 | * connections... | |
988 | */ | |
989 | ||
990 | if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration && | |
991 | !RunUser && cupsArrayCount(Clients)) | |
992 | { | |
993 | /* | |
994 | * Update the root certificate... | |
995 | */ | |
996 | ||
997 | cupsdDeleteCert(0); | |
998 | cupsdAddCert(0, "root", cupsdDefaultAuthType()); | |
999 | } | |
1000 | #endif /* !HAVE_AUTHORIZATION_H */ | |
1001 | ||
1002 | /* | |
1003 | * Check for new data on the client sockets... | |
1004 | */ | |
1005 | ||
1006 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); | |
1007 | con; | |
1008 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
1009 | { | |
1010 | /* | |
1011 | * Process pending data in the input buffer... | |
1012 | */ | |
1013 | ||
1014 | if (httpGetReady(con->http)) | |
1015 | { | |
1016 | cupsdReadClient(con); | |
1017 | continue; | |
1018 | } | |
1019 | ||
1020 | /* | |
1021 | * Check the activity and close old clients... | |
1022 | */ | |
1023 | ||
1024 | activity = current_time - Timeout; | |
1025 | if (httpGetActivity(con->http) < activity && !con->pipe_pid) | |
1026 | { | |
1027 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Closing client %d after %d seconds of inactivity.", con->number, Timeout); | |
1028 | ||
1029 | cupsdCloseClient(con); | |
1030 | continue; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* | |
1035 | * Update any pending multi-file documents... | |
1036 | */ | |
1037 | ||
1038 | if ((current_time - senddoc_time) >= 10) | |
1039 | { | |
1040 | cupsdCheckJobs(); | |
1041 | senddoc_time = current_time; | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * Clean job history... | |
1046 | */ | |
1047 | ||
1048 | if (JobHistoryUpdate && current_time >= JobHistoryUpdate) | |
1049 | cupsdCleanJobs(); | |
1050 | ||
1051 | /* | |
1052 | * Log statistics at most once a minute when in debug mode... | |
1053 | */ | |
1054 | ||
1055 | if ((current_time - report_time) >= 60 && LogLevel >= CUPSD_LOG_DEBUG) | |
1056 | { | |
1057 | size_t string_count, /* String count */ | |
1058 | alloc_bytes, /* Allocated string bytes */ | |
1059 | total_bytes; /* Total string bytes */ | |
1060 | #ifdef HAVE_MALLINFO | |
1061 | struct mallinfo mem; /* Malloc information */ | |
1062 | ||
1063 | ||
1064 | mem = mallinfo(); | |
1065 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-arena=%lu", mem.arena); | |
1066 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-used=%lu", | |
1067 | mem.usmblks + mem.uordblks); | |
1068 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-free=%lu", | |
1069 | mem.fsmblks + mem.fordblks); | |
1070 | #endif /* HAVE_MALLINFO */ | |
1071 | ||
1072 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: clients=%d", | |
1073 | cupsArrayCount(Clients)); | |
1074 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs=%d", | |
1075 | cupsArrayCount(Jobs)); | |
1076 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs-active=%d", | |
1077 | cupsArrayCount(ActiveJobs)); | |
1078 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: printers=%d", | |
1079 | cupsArrayCount(Printers)); | |
1080 | ||
1081 | string_count = _cupsStrStatistics(&alloc_bytes, &total_bytes); | |
1082 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1083 | "Report: stringpool-string-count=" CUPS_LLFMT, | |
1084 | CUPS_LLCAST string_count); | |
1085 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1086 | "Report: stringpool-alloc-bytes=" CUPS_LLFMT, | |
1087 | CUPS_LLCAST alloc_bytes); | |
1088 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1089 | "Report: stringpool-total-bytes=" CUPS_LLFMT, | |
1090 | CUPS_LLCAST total_bytes); | |
1091 | ||
1092 | report_time = current_time; | |
1093 | } | |
1094 | ||
1095 | /* | |
1096 | * Handle OS-specific event notification for any events that have | |
1097 | * accumulated. Don't send these more than once a second... | |
1098 | */ | |
1099 | ||
1100 | if (LastEvent && (current_time - event_time) >= 1) | |
1101 | { | |
1102 | #ifdef HAVE_NOTIFY_POST | |
1103 | if (LastEvent & (CUPSD_EVENT_PRINTER_ADDED | | |
1104 | CUPSD_EVENT_PRINTER_DELETED | | |
1105 | CUPSD_EVENT_PRINTER_MODIFIED)) | |
1106 | { | |
1107 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1108 | "notify_post(\"com.apple.printerListChange\")"); | |
1109 | notify_post("com.apple.printerListChange"); | |
1110 | } | |
1111 | ||
1112 | if (LastEvent & CUPSD_EVENT_PRINTER_STATE_CHANGED) | |
1113 | { | |
1114 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1115 | "notify_post(\"com.apple.printerHistoryChange\")"); | |
1116 | notify_post("com.apple.printerHistoryChange"); | |
1117 | } | |
1118 | ||
1119 | if (LastEvent & (CUPSD_EVENT_JOB_STATE_CHANGED | | |
1120 | CUPSD_EVENT_JOB_CONFIG_CHANGED | | |
1121 | CUPSD_EVENT_JOB_PROGRESS)) | |
1122 | { | |
1123 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
1124 | "notify_post(\"com.apple.jobChange\")"); | |
1125 | notify_post("com.apple.jobChange"); | |
1126 | } | |
1127 | #endif /* HAVE_NOTIFY_POST */ | |
1128 | ||
1129 | /* | |
1130 | * Reset the accumulated events... | |
1131 | */ | |
1132 | ||
1133 | LastEvent = CUPSD_EVENT_NONE; | |
1134 | event_time = current_time; | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | /* | |
1139 | * Log a message based on what happened... | |
1140 | */ | |
1141 | ||
1142 | if (stop_scheduler) | |
1143 | { | |
1144 | cupsdLogMessage(CUPSD_LOG_INFO, "Scheduler shutting down normally."); | |
1145 | cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED, NULL, NULL, | |
1146 | "Scheduler shutting down normally."); | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1151 | "Scheduler shutting down due to program error."); | |
1152 | cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED, NULL, NULL, | |
1153 | "Scheduler shutting down due to program error."); | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * Close all network clients... | |
1158 | */ | |
1159 | ||
1160 | DoingShutdown = 1; | |
1161 | ||
1162 | cupsdStopServer(); | |
1163 | ||
1164 | /* | |
1165 | * Update the KeepAlive/PID file as needed... | |
1166 | */ | |
1167 | ||
1168 | service_checkout(1); | |
1169 | ||
1170 | /* | |
1171 | * Stop all jobs... | |
1172 | */ | |
1173 | ||
1174 | cupsdFreeAllJobs(); | |
1175 | ||
1176 | /* | |
1177 | * Delete all temporary printers... | |
1178 | */ | |
1179 | ||
1180 | cupsdDeleteTemporaryPrinters(1); | |
1181 | ||
1182 | #ifdef __APPLE__ | |
1183 | /* | |
1184 | * Stop monitoring system event monitoring... | |
1185 | */ | |
1186 | ||
1187 | if (use_sysman) | |
1188 | cupsdStopSystemMonitor(); | |
1189 | #endif /* __APPLE__ */ | |
1190 | ||
1191 | cupsdStopSelect(); | |
1192 | ||
1193 | return (!stop_scheduler); | |
1194 | } | |
1195 | ||
1196 | ||
1197 | /* | |
1198 | * 'cupsdAddString()' - Copy and add a string to an array. | |
1199 | */ | |
1200 | ||
1201 | int /* O - 1 on success, 0 on failure */ | |
1202 | cupsdAddString(cups_array_t **a, /* IO - String array */ | |
1203 | const char *s) /* I - String to copy and add */ | |
1204 | { | |
1205 | if (!*a) | |
1206 | *a = cupsArrayNew3((cups_array_func_t)strcmp, NULL, | |
1207 | (cups_ahash_func_t)NULL, 0, | |
1208 | (cups_acopy_func_t)strdup, | |
1209 | (cups_afree_func_t)free); | |
1210 | ||
1211 | return (cupsArrayAdd(*a, (char *)s)); | |
1212 | } | |
1213 | ||
1214 | ||
1215 | /* | |
1216 | * 'cupsdCheckProcess()' - Tell the main loop to check for dead children. | |
1217 | */ | |
1218 | ||
1219 | void | |
1220 | cupsdCheckProcess(void) | |
1221 | { | |
1222 | /* | |
1223 | * Flag that we have dead children... | |
1224 | */ | |
1225 | ||
1226 | dead_children = 1; | |
1227 | } | |
1228 | ||
1229 | ||
1230 | /* | |
1231 | * 'cupsdClearString()' - Clear a string. | |
1232 | */ | |
1233 | ||
1234 | void | |
1235 | cupsdClearString(char **s) /* O - String value */ | |
1236 | { | |
1237 | if (s && *s) | |
1238 | { | |
1239 | free(*s); | |
1240 | *s = NULL; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | ||
1245 | /* | |
1246 | * 'cupsdFreeStrings()' - Free an array of strings. | |
1247 | */ | |
1248 | ||
1249 | void | |
1250 | cupsdFreeStrings(cups_array_t **a) /* IO - String array */ | |
1251 | { | |
1252 | if (*a) | |
1253 | { | |
1254 | cupsArrayDelete(*a); | |
1255 | *a = NULL; | |
1256 | } | |
1257 | } | |
1258 | ||
1259 | ||
1260 | /* | |
1261 | * 'cupsdHoldSignals()' - Hold child and termination signals. | |
1262 | */ | |
1263 | ||
1264 | void | |
1265 | cupsdHoldSignals(void) | |
1266 | { | |
1267 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
1268 | sigset_t newmask; /* New POSIX signal mask */ | |
1269 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
1270 | ||
1271 | ||
1272 | holdcount ++; | |
1273 | if (holdcount > 1) | |
1274 | return; | |
1275 | ||
1276 | #ifdef HAVE_SIGSET | |
1277 | sighold(SIGTERM); | |
1278 | sighold(SIGCHLD); | |
1279 | #elif defined(HAVE_SIGACTION) | |
1280 | sigemptyset(&newmask); | |
1281 | sigaddset(&newmask, SIGTERM); | |
1282 | sigaddset(&newmask, SIGCHLD); | |
1283 | sigprocmask(SIG_BLOCK, &newmask, &holdmask); | |
1284 | #endif /* HAVE_SIGSET */ | |
1285 | } | |
1286 | ||
1287 | ||
1288 | /* | |
1289 | * 'cupsdReleaseSignals()' - Release signals for delivery. | |
1290 | */ | |
1291 | ||
1292 | void | |
1293 | cupsdReleaseSignals(void) | |
1294 | { | |
1295 | holdcount --; | |
1296 | if (holdcount > 0) | |
1297 | return; | |
1298 | ||
1299 | #ifdef HAVE_SIGSET | |
1300 | sigrelse(SIGTERM); | |
1301 | sigrelse(SIGCHLD); | |
1302 | #elif defined(HAVE_SIGACTION) | |
1303 | sigprocmask(SIG_SETMASK, &holdmask, NULL); | |
1304 | #endif /* HAVE_SIGSET */ | |
1305 | } | |
1306 | ||
1307 | ||
1308 | /* | |
1309 | * 'cupsdSetString()' - Set a string value. | |
1310 | */ | |
1311 | ||
1312 | void | |
1313 | cupsdSetString(char **s, /* O - New string */ | |
1314 | const char *v) /* I - String value */ | |
1315 | { | |
1316 | if (!s || *s == v) | |
1317 | return; | |
1318 | ||
1319 | if (*s) | |
1320 | free(*s); | |
1321 | ||
1322 | if (v) | |
1323 | *s = strdup(v); | |
1324 | else | |
1325 | *s = NULL; | |
1326 | } | |
1327 | ||
1328 | ||
1329 | /* | |
1330 | * 'cupsdSetStringf()' - Set a formatted string value. | |
1331 | */ | |
1332 | ||
1333 | void | |
1334 | cupsdSetStringf(char **s, /* O - New string */ | |
1335 | const char *f, /* I - Printf-style format string */ | |
1336 | ...) /* I - Additional args as needed */ | |
1337 | { | |
1338 | char v[65536 + 64]; /* Formatting string value */ | |
1339 | va_list ap; /* Argument pointer */ | |
1340 | char *olds; /* Old string */ | |
1341 | ||
1342 | ||
1343 | if (!s) | |
1344 | return; | |
1345 | ||
1346 | olds = *s; | |
1347 | ||
1348 | if (f) | |
1349 | { | |
1350 | va_start(ap, f); | |
1351 | vsnprintf(v, sizeof(v), f, ap); | |
1352 | va_end(ap); | |
1353 | ||
1354 | *s = strdup(v); | |
1355 | } | |
1356 | else | |
1357 | *s = NULL; | |
1358 | ||
1359 | if (olds) | |
1360 | free(olds); | |
1361 | } | |
1362 | ||
1363 | ||
1364 | /* | |
1365 | * 'parent_handler()' - Catch USR1/CHLD signals... | |
1366 | */ | |
1367 | ||
1368 | static void | |
1369 | parent_handler(int sig) /* I - Signal */ | |
1370 | { | |
1371 | /* | |
1372 | * Store the signal we got from the OS and return... | |
1373 | */ | |
1374 | ||
1375 | parent_signal = sig; | |
1376 | } | |
1377 | ||
1378 | ||
1379 | /* | |
1380 | * 'process_children()' - Process all dead children... | |
1381 | */ | |
1382 | ||
1383 | static void | |
1384 | process_children(void) | |
1385 | { | |
1386 | int status; /* Exit status of child */ | |
1387 | int pid, /* Process ID of child */ | |
1388 | job_id; /* Job ID of child */ | |
1389 | cupsd_job_t *job; /* Current job */ | |
1390 | int i; /* Looping var */ | |
1391 | char name[1024]; /* Process name */ | |
1392 | const char *type; /* Type of program */ | |
1393 | ||
1394 | ||
1395 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "process_children()"); | |
1396 | ||
1397 | /* | |
1398 | * Reset the dead_children flag... | |
1399 | */ | |
1400 | ||
1401 | dead_children = 0; | |
1402 | ||
1403 | /* | |
1404 | * Collect the exit status of some children... | |
1405 | */ | |
1406 | ||
1407 | #ifdef HAVE_WAITPID | |
1408 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) | |
1409 | #elif defined(HAVE_WAIT3) | |
1410 | while ((pid = wait3(&status, WNOHANG, NULL)) > 0) | |
1411 | #else | |
1412 | if ((pid = wait(&status)) > 0) | |
1413 | #endif /* HAVE_WAITPID */ | |
1414 | { | |
1415 | /* | |
1416 | * Collect the name of the process that finished... | |
1417 | */ | |
1418 | ||
1419 | cupsdFinishProcess(pid, name, sizeof(name), &job_id); | |
1420 | ||
1421 | /* | |
1422 | * Delete certificates for CGI processes... | |
1423 | */ | |
1424 | ||
1425 | if (pid) | |
1426 | cupsdDeleteCert(pid); | |
1427 | ||
1428 | /* | |
1429 | * Handle completed job filters... | |
1430 | */ | |
1431 | ||
1432 | if (job_id > 0) | |
1433 | job = cupsdFindJob(job_id); | |
1434 | else | |
1435 | job = NULL; | |
1436 | ||
1437 | if (job) | |
1438 | { | |
1439 | for (i = 0; job->filters[i]; i ++) | |
1440 | if (job->filters[i] == pid) | |
1441 | break; | |
1442 | ||
1443 | if (job->filters[i] || job->backend == pid) | |
1444 | { | |
1445 | /* | |
1446 | * OK, this process has gone away; what's left? | |
1447 | */ | |
1448 | ||
1449 | if (job->filters[i]) | |
1450 | { | |
1451 | job->filters[i] = -pid; | |
1452 | type = "Filter"; | |
1453 | } | |
1454 | else | |
1455 | { | |
1456 | job->backend = -pid; | |
1457 | type = "Backend"; | |
1458 | } | |
1459 | ||
1460 | if (status && status != SIGTERM && status != SIGKILL && | |
1461 | status != SIGPIPE) | |
1462 | { | |
1463 | /* | |
1464 | * An error occurred; save the exit status so we know to stop | |
1465 | * the printer or cancel the job when all of the filters finish... | |
1466 | * | |
1467 | * A negative status indicates that the backend failed and the | |
1468 | * printer needs to be stopped. | |
1469 | * | |
1470 | * In order to preserve the most serious status, we always log | |
1471 | * when a process dies due to a signal (e.g. SIGABRT, SIGSEGV, | |
1472 | * and SIGBUS) and prefer to log the backend exit status over a | |
1473 | * filter's. | |
1474 | */ | |
1475 | ||
1476 | int old_status = abs(job->status); | |
1477 | ||
1478 | if (WIFSIGNALED(status) || /* This process crashed, or */ | |
1479 | !job->status || /* No process had a status, or */ | |
1480 | (!job->filters[i] && WIFEXITED(old_status))) | |
1481 | { /* Backend and filter didn't crash */ | |
1482 | if (job->filters[i]) | |
1483 | { | |
1484 | job->status = status; /* Filter failed */ | |
1485 | } | |
1486 | else | |
1487 | { | |
1488 | job->status = -status; /* Backend failed */ | |
1489 | ||
1490 | if (job->current_file < job->num_files) | |
1491 | cupsdSetJobState(job, IPP_JOB_ABORTED, CUPSD_JOB_FORCE, "Canceling multi-file job due to backend failure."); | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | if (job->state_value == IPP_JOB_PROCESSING && | |
1496 | job->status_level > CUPSD_LOG_ERROR && | |
1497 | (job->filters[i] || !WIFEXITED(status))) | |
1498 | { | |
1499 | char message[1024]; /* New printer-state-message */ | |
1500 | ||
1501 | ||
1502 | job->status_level = CUPSD_LOG_ERROR; | |
1503 | ||
1504 | snprintf(message, sizeof(message), "%s failed", type); | |
1505 | ||
1506 | if (job->printer) | |
1507 | { | |
1508 | strlcpy(job->printer->state_message, message, | |
1509 | sizeof(job->printer->state_message)); | |
1510 | } | |
1511 | ||
1512 | if (!job->attrs) | |
1513 | cupsdLoadJob(job); | |
1514 | ||
1515 | if (!job->printer_message && job->attrs) | |
1516 | { | |
1517 | if ((job->printer_message = | |
1518 | ippFindAttribute(job->attrs, "job-printer-state-message", | |
1519 | IPP_TAG_TEXT)) == NULL) | |
1520 | job->printer_message = ippAddString(job->attrs, IPP_TAG_JOB, | |
1521 | IPP_TAG_TEXT, | |
1522 | "job-printer-state-message", | |
1523 | NULL, NULL); | |
1524 | } | |
1525 | ||
1526 | if (job->printer_message) | |
1527 | ippSetString(job->attrs, &job->printer_message, 0, message); | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | /* | |
1532 | * If this is not the last file in a job, see if all of the | |
1533 | * filters are done, and if so move to the next file. | |
1534 | */ | |
1535 | ||
1536 | if (job->state_value >= IPP_JOB_CANCELED) | |
1537 | { | |
1538 | /* | |
1539 | * Remove the job from the active list if there are no processes still | |
1540 | * running for it... | |
1541 | */ | |
1542 | ||
1543 | for (i = 0; job->filters[i] < 0; i++); | |
1544 | ||
1545 | if (!job->filters[i] && job->backend <= 0) | |
1546 | cupsArrayRemove(ActiveJobs, job); | |
1547 | } | |
1548 | else if (job->current_file < job->num_files && job->printer) | |
1549 | { | |
1550 | for (i = 0; job->filters[i] < 0; i ++); | |
1551 | ||
1552 | if (!job->filters[i] && | |
1553 | (!job->printer->pc || !job->printer->pc->single_file || | |
1554 | job->backend <= 0)) | |
1555 | { | |
1556 | /* | |
1557 | * Process the next file... | |
1558 | */ | |
1559 | ||
1560 | cupsdContinueJob(job); | |
1561 | } | |
1562 | } | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | /* | |
1567 | * Show the exit status as needed, ignoring SIGTERM and SIGKILL errors | |
1568 | * since they come when we kill/end a process... | |
1569 | */ | |
1570 | ||
1571 | if (status == SIGTERM || status == SIGKILL) | |
1572 | { | |
1573 | cupsdLogJob(job, CUPSD_LOG_DEBUG, | |
1574 | "PID %d (%s) was terminated normally with signal %d.", pid, | |
1575 | name, status); | |
1576 | } | |
1577 | else if (status == SIGPIPE) | |
1578 | { | |
1579 | cupsdLogJob(job, CUPSD_LOG_DEBUG, | |
1580 | "PID %d (%s) did not catch or ignore signal %d.", pid, name, | |
1581 | status); | |
1582 | } | |
1583 | else if (status) | |
1584 | { | |
1585 | if (WIFEXITED(status)) | |
1586 | { | |
1587 | int code = WEXITSTATUS(status); /* Exit code */ | |
1588 | ||
1589 | if (code > 100) | |
1590 | cupsdLogJob(job, CUPSD_LOG_DEBUG, | |
1591 | "PID %d (%s) stopped with status %d (%s)", pid, name, | |
1592 | code, strerror(code - 100)); | |
1593 | else | |
1594 | cupsdLogJob(job, CUPSD_LOG_DEBUG, | |
1595 | "PID %d (%s) stopped with status %d.", pid, name, code); | |
1596 | } | |
1597 | else | |
1598 | cupsdLogJob(job, CUPSD_LOG_DEBUG, "PID %d (%s) crashed on signal %d.", | |
1599 | pid, name, WTERMSIG(status)); | |
1600 | ||
1601 | if (LogLevel < CUPSD_LOG_DEBUG) | |
1602 | cupsdLogJob(job, CUPSD_LOG_INFO, | |
1603 | "Hint: Try setting the LogLevel to \"debug\" to find out " | |
1604 | "more."); | |
1605 | } | |
1606 | else | |
1607 | cupsdLogJob(job, CUPSD_LOG_DEBUG, "PID %d (%s) exited with no errors.", | |
1608 | pid, name); | |
1609 | } | |
1610 | ||
1611 | /* | |
1612 | * If wait*() is interrupted by a signal, tell main() to call us again... | |
1613 | */ | |
1614 | ||
1615 | if (pid < 0 && errno == EINTR) | |
1616 | dead_children = 1; | |
1617 | } | |
1618 | ||
1619 | ||
1620 | /* | |
1621 | * 'select_timeout()' - Calculate the select timeout value. | |
1622 | * | |
1623 | */ | |
1624 | ||
1625 | static long /* O - Number of seconds */ | |
1626 | select_timeout(int fds) /* I - Number of descriptors returned */ | |
1627 | { | |
1628 | long timeout; /* Timeout for select */ | |
1629 | time_t now; /* Current time */ | |
1630 | cupsd_client_t *con; /* Client information */ | |
1631 | cupsd_job_t *job; /* Job information */ | |
1632 | cupsd_printer_t *printer; /* Printer information */ | |
1633 | const char *why; /* Debugging aid */ | |
1634 | ||
1635 | ||
1636 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout: JobHistoryUpdate=%ld", | |
1637 | (long)JobHistoryUpdate); | |
1638 | ||
1639 | /* | |
1640 | * Check to see if any of the clients have pending data to be | |
1641 | * processed; if so, the timeout should be 0... | |
1642 | */ | |
1643 | ||
1644 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); | |
1645 | con; | |
1646 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
1647 | if (httpGetReady(con->http)) | |
1648 | return (0); | |
1649 | ||
1650 | /* | |
1651 | * If select has been active in the last second (fds > 0) or we have | |
1652 | * many resources in use then don't bother trying to optimize the | |
1653 | * timeout, just make it 1 second. | |
1654 | */ | |
1655 | ||
1656 | if (fds > 0 || cupsArrayCount(Clients) > 50) | |
1657 | return (1); | |
1658 | ||
1659 | /* | |
1660 | * Otherwise, check all of the possible events that we need to wake for... | |
1661 | */ | |
1662 | ||
1663 | now = time(NULL); | |
1664 | timeout = now + 86400; /* 86400 == 1 day */ | |
1665 | why = "do nothing"; | |
1666 | ||
1667 | #ifdef __APPLE__ | |
1668 | /* | |
1669 | * When going to sleep, wake up to abort jobs that don't complete in time. | |
1670 | */ | |
1671 | ||
1672 | if (SleepJobs > 0 && SleepJobs < timeout) | |
1673 | { | |
1674 | timeout = SleepJobs; | |
1675 | why = "abort jobs before sleeping"; | |
1676 | } | |
1677 | #endif /* __APPLE__ */ | |
1678 | ||
1679 | /* | |
1680 | * Check whether we are accepting new connections... | |
1681 | */ | |
1682 | ||
1683 | if (ListeningPaused > 0 && cupsArrayCount(Clients) < MaxClients && | |
1684 | ListeningPaused < timeout) | |
1685 | { | |
1686 | if (ListeningPaused <= now) | |
1687 | timeout = now; | |
1688 | else | |
1689 | timeout = ListeningPaused; | |
1690 | ||
1691 | why = "resume listening"; | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * Check the activity and close old clients... | |
1696 | */ | |
1697 | ||
1698 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); | |
1699 | con; | |
1700 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
1701 | if ((httpGetActivity(con->http) + Timeout) < timeout) | |
1702 | { | |
1703 | timeout = httpGetActivity(con->http) + Timeout; | |
1704 | why = "timeout a client connection"; | |
1705 | } | |
1706 | ||
1707 | /* | |
1708 | * Write out changes to configuration and state files... | |
1709 | */ | |
1710 | ||
1711 | if (DirtyCleanTime && timeout > DirtyCleanTime) | |
1712 | { | |
1713 | timeout = DirtyCleanTime; | |
1714 | why = "write dirty config/state files"; | |
1715 | } | |
1716 | ||
1717 | /* | |
1718 | * Check for any job activity... | |
1719 | */ | |
1720 | ||
1721 | if (JobHistoryUpdate && timeout > JobHistoryUpdate) | |
1722 | { | |
1723 | timeout = JobHistoryUpdate; | |
1724 | why = "update job history"; | |
1725 | } | |
1726 | ||
1727 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
1728 | job; | |
1729 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
1730 | { | |
1731 | if (job->cancel_time && job->cancel_time < timeout) | |
1732 | { | |
1733 | timeout = job->cancel_time; | |
1734 | why = "cancel stuck jobs"; | |
1735 | } | |
1736 | ||
1737 | if (job->kill_time && job->kill_time < timeout) | |
1738 | { | |
1739 | timeout = job->kill_time; | |
1740 | why = "kill unresponsive jobs"; | |
1741 | } | |
1742 | ||
1743 | if (job->state_value == IPP_JOB_HELD && job->hold_until < timeout) | |
1744 | { | |
1745 | timeout = job->hold_until; | |
1746 | why = "release held jobs"; | |
1747 | } | |
1748 | ||
1749 | if (job->state_value == IPP_JOB_PENDING && timeout > (now + 10)) | |
1750 | { | |
1751 | timeout = now + 10; | |
1752 | why = "start pending jobs"; | |
1753 | break; | |
1754 | } | |
1755 | } | |
1756 | ||
1757 | /* | |
1758 | * Check for temporary printers that need to be deleted... | |
1759 | */ | |
1760 | ||
1761 | for (printer = (cupsd_printer_t *)cupsArrayFirst(Printers); printer; printer = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
1762 | { | |
1763 | if (printer->temporary && !printer->job && (!local_timeout || local_timeout > (printer->state_time + 60))) | |
1764 | local_timeout = printer->state_time + 60; | |
1765 | } | |
1766 | ||
1767 | if (timeout > local_timeout && local_timeout) | |
1768 | { | |
1769 | timeout = local_timeout; | |
1770 | why = "delete stale local printers"; | |
1771 | } | |
1772 | ||
1773 | /* | |
1774 | * Adjust from absolute to relative time. We add 1 second to the timeout since | |
1775 | * events occur after the timeout expires, and limit the timeout to 86400 | |
1776 | * seconds (1 day) to avoid select() timeout limits present on some operating | |
1777 | * systems... | |
1778 | */ | |
1779 | ||
1780 | timeout = timeout - now + 1; | |
1781 | ||
1782 | if (timeout < 1) | |
1783 | timeout = 1; | |
1784 | else if (timeout > 86400) | |
1785 | timeout = 86400; | |
1786 | ||
1787 | /* | |
1788 | * Log and return the timeout value... | |
1789 | */ | |
1790 | ||
1791 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout(%d): %ld seconds to %s", | |
1792 | fds, timeout, why); | |
1793 | ||
1794 | return (timeout); | |
1795 | } | |
1796 | ||
1797 | ||
1798 | /* | |
1799 | * 'sigchld_handler()' - Handle 'child' signals from old processes. | |
1800 | */ | |
1801 | ||
1802 | static void | |
1803 | sigchld_handler(int sig) /* I - Signal number */ | |
1804 | { | |
1805 | (void)sig; | |
1806 | ||
1807 | /* | |
1808 | * Flag that we have dead children... | |
1809 | */ | |
1810 | ||
1811 | dead_children = 1; | |
1812 | ||
1813 | /* | |
1814 | * Reset the signal handler as needed... | |
1815 | */ | |
1816 | ||
1817 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1818 | signal(SIGCLD, sigchld_handler); | |
1819 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1820 | } | |
1821 | ||
1822 | ||
1823 | /* | |
1824 | * 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler. | |
1825 | */ | |
1826 | ||
1827 | static void | |
1828 | sighup_handler(int sig) /* I - Signal number */ | |
1829 | { | |
1830 | (void)sig; | |
1831 | ||
1832 | NeedReload = RELOAD_ALL; | |
1833 | ReloadTime = time(NULL); | |
1834 | ||
1835 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1836 | signal(SIGHUP, sighup_handler); | |
1837 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1838 | } | |
1839 | ||
1840 | ||
1841 | /* | |
1842 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler. | |
1843 | */ | |
1844 | ||
1845 | static void | |
1846 | sigterm_handler(int sig) /* I - Signal number */ | |
1847 | { | |
1848 | (void)sig; /* remove compiler warnings... */ | |
1849 | ||
1850 | /* | |
1851 | * Flag that we should stop and return... | |
1852 | */ | |
1853 | ||
1854 | stop_scheduler = 1; | |
1855 | } | |
1856 | ||
1857 | ||
1858 | #ifdef HAVE_ONDEMAND | |
1859 | /* | |
1860 | * 'service_add_listener()' - Bind an open fd as a Listener. | |
1861 | */ | |
1862 | ||
1863 | static void | |
1864 | service_add_listener(int fd, /* I - Socket file descriptor */ | |
1865 | int idx) /* I - Listener number, for logging */ | |
1866 | { | |
1867 | cupsd_listener_t *lis; /* Listeners array */ | |
1868 | http_addr_t addr; /* Address variable */ | |
1869 | socklen_t addrlen; /* Length of address */ | |
1870 | char s[256]; /* String addresss */ | |
1871 | ||
1872 | ||
1873 | addrlen = sizeof(addr); | |
1874 | ||
1875 | if (getsockname(fd, (struct sockaddr *)&addr, &addrlen)) | |
1876 | { | |
1877 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_add_listener: Unable to get local address for listener #%d: %s", idx + 1, strerror(errno)); | |
1878 | return; | |
1879 | } | |
1880 | ||
1881 | cupsdLogMessage(CUPSD_LOG_DEBUG, "service_add_listener: Listener #%d at fd %d, \"%s\".", idx + 1, fd, httpAddrString(&addr, s, sizeof(s))); | |
1882 | ||
1883 | /* | |
1884 | * Try to match the on-demand socket address to one of the listeners... | |
1885 | */ | |
1886 | ||
1887 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); | |
1888 | lis; | |
1889 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
1890 | if (httpAddrEqual(&lis->address, &addr)) | |
1891 | break; | |
1892 | ||
1893 | /* | |
1894 | * Add a new listener If there's no match... | |
1895 | */ | |
1896 | ||
1897 | if (lis) | |
1898 | { | |
1899 | cupsdLogMessage(CUPSD_LOG_DEBUG, "service_add_listener: Matched existing listener #%d to %s.", idx + 1, httpAddrString(&(lis->address), s, sizeof(s))); | |
1900 | } | |
1901 | else | |
1902 | { | |
1903 | cupsdLogMessage(CUPSD_LOG_DEBUG, "service_add_listener: Adding new listener #%d for %s.", idx + 1, httpAddrString(&addr, s, sizeof(s))); | |
1904 | ||
1905 | if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL) | |
1906 | { | |
1907 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_add_listener: Unable to allocate listener: %s.", strerror(errno)); | |
1908 | exit(EXIT_FAILURE); | |
1909 | return; | |
1910 | } | |
1911 | ||
1912 | cupsArrayAdd(Listeners, lis); | |
1913 | ||
1914 | memcpy(&lis->address, &addr, sizeof(lis->address)); | |
1915 | } | |
1916 | ||
1917 | lis->fd = fd; | |
1918 | lis->on_demand = 1; | |
1919 | ||
1920 | # ifdef HAVE_SSL | |
1921 | if (httpAddrPort(&(lis->address)) == 443) | |
1922 | lis->encryption = HTTP_ENCRYPT_ALWAYS; | |
1923 | # endif /* HAVE_SSL */ | |
1924 | } | |
1925 | #endif /* HAVE_ONDEMAND */ | |
1926 | ||
1927 | ||
1928 | /* | |
1929 | * 'service_checkin()' - Check-in with launchd and collect the listening fds. | |
1930 | */ | |
1931 | ||
1932 | static void | |
1933 | service_checkin(void) | |
1934 | { | |
1935 | cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: pid=%d", (int)getpid()); | |
1936 | ||
1937 | #ifdef HAVE_LAUNCHD | |
1938 | if (OnDemand) | |
1939 | { | |
1940 | int error; /* Check-in error, if any */ | |
1941 | size_t i, /* Looping var */ | |
1942 | count; /* Number of listeners */ | |
1943 | int *ld_sockets; /* Listener sockets */ | |
1944 | ||
1945 | # ifdef __APPLE__ | |
1946 | /* | |
1947 | * Force "user initiated" priority for the main thread... | |
1948 | */ | |
1949 | ||
1950 | pthread_set_qos_class_self_np(QOS_CLASS_USER_INITIATED, 0); | |
1951 | # endif /* __APPLE__ */ | |
1952 | ||
1953 | /* | |
1954 | * Check-in with launchd... | |
1955 | */ | |
1956 | ||
1957 | if ((error = launch_activate_socket("Listeners", &ld_sockets, &count)) != 0) | |
1958 | { | |
1959 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Unable to get listener sockets: %s", strerror(error)); | |
1960 | exit(EXIT_FAILURE); | |
1961 | return; /* anti-compiler-warning */ | |
1962 | } | |
1963 | ||
1964 | /* | |
1965 | * Try to match the launchd sockets to the cupsd listeners... | |
1966 | */ | |
1967 | ||
1968 | cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: %d listeners.", (int)count); | |
1969 | ||
1970 | for (i = 0; i < count; i ++) | |
1971 | service_add_listener(ld_sockets[i], (int)i); | |
1972 | ||
1973 | free(ld_sockets); | |
1974 | ||
1975 | # ifdef __APPLE__ | |
1976 | xpc_transaction_begin(); | |
1977 | # endif /* __APPLE__ */ | |
1978 | } | |
1979 | ||
1980 | #elif defined(HAVE_SYSTEMD) | |
1981 | if (OnDemand) | |
1982 | { | |
1983 | int i, /* Looping var */ | |
1984 | count; /* Number of listeners */ | |
1985 | ||
1986 | /* | |
1987 | * Check-in with systemd... | |
1988 | */ | |
1989 | ||
1990 | if ((count = sd_listen_fds(0)) < 0) | |
1991 | { | |
1992 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Unable to get listener sockets: %s", strerror(-count)); | |
1993 | exit(EXIT_FAILURE); | |
1994 | return; /* anti-compiler-warning */ | |
1995 | } | |
1996 | ||
1997 | /* | |
1998 | * Try to match the systemd sockets to the cupsd listeners... | |
1999 | */ | |
2000 | ||
2001 | cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: %d listeners.", count); | |
2002 | ||
2003 | for (i = 0; i < count; i ++) | |
2004 | service_add_listener(SD_LISTEN_FDS_START + i, i); | |
2005 | } | |
2006 | ||
2007 | #elif defined(HAVE_UPSTART) | |
2008 | if (OnDemand) | |
2009 | { | |
2010 | const char *e; /* Environment var */ | |
2011 | int fd; /* File descriptor */ | |
2012 | ||
2013 | ||
2014 | if (!(e = getenv("UPSTART_EVENTS"))) | |
2015 | { | |
2016 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: We did not get started via Upstart."); | |
2017 | exit(EXIT_FAILURE); | |
2018 | return; | |
2019 | } | |
2020 | ||
2021 | if (strcasecmp(e, "socket")) | |
2022 | { | |
2023 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: We did not get triggered via an Upstart socket event."); | |
2024 | exit(EXIT_FAILURE); | |
2025 | return; | |
2026 | } | |
2027 | ||
2028 | if ((e = getenv("UPSTART_FDS")) == NULL) | |
2029 | { | |
2030 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Unable to get listener sockets from UPSTART_FDS."); | |
2031 | exit(EXIT_FAILURE); | |
2032 | return; | |
2033 | } | |
2034 | ||
2035 | cupsdLogMessage(CUPSD_LOG_DEBUG, "service_checkin: UPSTART_FDS=%s", e); | |
2036 | ||
2037 | fd = (int)strtol(e, NULL, 10); | |
2038 | if (fd < 0) | |
2039 | { | |
2040 | cupsdLogMessage(CUPSD_LOG_ERROR, "service_checkin: Could not parse UPSTART_FDS: %s", strerror(errno)); | |
2041 | exit(EXIT_FAILURE); | |
2042 | return; | |
2043 | } | |
2044 | ||
2045 | /* | |
2046 | * Upstart only supportst a single on-demand socket file descriptor... | |
2047 | */ | |
2048 | ||
2049 | service_add_listener(fd, 0); | |
2050 | } | |
2051 | #endif /* HAVE_LAUNCHD */ | |
2052 | } | |
2053 | ||
2054 | ||
2055 | /* | |
2056 | * 'service_checkout()' - Update the KeepAlive/PID file as needed. | |
2057 | */ | |
2058 | ||
2059 | static void | |
2060 | service_checkout(int shutdown) /* I - Shutting down? */ | |
2061 | { | |
2062 | cups_file_t *fp; /* File */ | |
2063 | char pidfile[1024]; /* PID/KeepAlive file */ | |
2064 | ||
2065 | ||
2066 | /* | |
2067 | * When running on-demand, use the KeepAlive file, otherwise write a PID file | |
2068 | * to StateDir... | |
2069 | */ | |
2070 | ||
2071 | #ifdef HAVE_ONDEMAND | |
2072 | if (OnDemand) | |
2073 | { | |
2074 | strlcpy(pidfile, CUPS_KEEPALIVE, sizeof(pidfile)); | |
2075 | ||
2076 | if (cupsArrayCount(ActiveJobs) || /* Active jobs */ | |
2077 | WebInterface || /* Web interface enabled */ | |
2078 | NeedReload || /* Doing a reload */ | |
2079 | (Browsing && BrowseLocalProtocols && cupsArrayCount(Printers))) | |
2080 | /* Printers being shared */ | |
2081 | { | |
2082 | /* | |
2083 | * Create or remove the "keep-alive" file based on whether there are active | |
2084 | * jobs or shared printers to advertise... | |
2085 | */ | |
2086 | ||
2087 | shutdown = 0; | |
2088 | } | |
2089 | } | |
2090 | else | |
2091 | #endif /* HAVE_ONDEMAND */ | |
2092 | snprintf(pidfile, sizeof(pidfile), "%s/cupsd.pid", StateDir); | |
2093 | ||
2094 | if (shutdown) | |
2095 | { | |
2096 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Removing KeepAlive/PID file \"%s\".", pidfile); | |
2097 | ||
2098 | unlink(pidfile); | |
2099 | } | |
2100 | else | |
2101 | { | |
2102 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Creating KeepAlive/PID file \"%s\".", pidfile); | |
2103 | ||
2104 | if ((fp = cupsFileOpen(pidfile, "w")) != NULL) | |
2105 | { | |
2106 | /* | |
2107 | * Save the PID in the file... | |
2108 | */ | |
2109 | ||
2110 | cupsFilePrintf(fp, "%d\n", (int)getpid()); | |
2111 | cupsFileClose(fp); | |
2112 | } | |
2113 | else | |
2114 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to create KeepAlive/PID file \"%s\": %s", pidfile, strerror(errno)); | |
2115 | } | |
2116 | ||
2117 | # ifdef __APPLE__ | |
2118 | if (OnDemand && shutdown) | |
2119 | xpc_transaction_end(); | |
2120 | # endif /* __APPLE__ */ | |
2121 | } | |
2122 | ||
2123 | ||
2124 | /* | |
2125 | * 'usage()' - Show scheduler usage. | |
2126 | */ | |
2127 | ||
2128 | static void | |
2129 | usage(int status) /* O - Exit status */ | |
2130 | { | |
2131 | FILE *fp = status ? stderr : stdout; /* Output file */ | |
2132 | ||
2133 | ||
2134 | _cupsLangPuts(fp, _("Usage: cupsd [options]")); | |
2135 | _cupsLangPuts(fp, _("Options:")); | |
2136 | _cupsLangPuts(fp, _("-c cupsd.conf Set cupsd.conf file to use.")); | |
2137 | _cupsLangPuts(fp, _("-f Run in the foreground.")); | |
2138 | _cupsLangPuts(fp, _("-F Run in the foreground but detach from console.")); | |
2139 | _cupsLangPuts(fp, _("-h Show this usage message.")); | |
2140 | #ifdef HAVE_ONDEMAND | |
2141 | _cupsLangPuts(fp, _("-l Run cupsd on demand.")); | |
2142 | #endif /* HAVE_ONDEMAND */ | |
2143 | _cupsLangPuts(fp, _("-s cups-files.conf Set cups-files.conf file to use.")); | |
2144 | _cupsLangPuts(fp, _("-t Test the configuration file.")); | |
2145 | ||
2146 | exit(status); | |
2147 | } |