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ef416fc2 | 1 | /* |
09a101d6 | 2 | * "$Id: main.c 6564 2007-06-18 23:40:38Z mike $" |
ef416fc2 | 3 | * |
4 | * Scheduler main loop for the Common UNIX Printing System (CUPS). | |
5 | * | |
f7deaa1a | 6 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 7 | * |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Easy Software Products and are protected by Federal | |
10 | * copyright law. Distribution and use rights are outlined in the file | |
11 | * "LICENSE" which should have been included with this file. If this | |
12 | * file is missing or damaged please contact Easy Software Products | |
13 | * at: | |
14 | * | |
15 | * Attn: CUPS Licensing Information | |
16 | * Easy Software Products | |
17 | * 44141 Airport View Drive, Suite 204 | |
18 | * Hollywood, Maryland 20636 USA | |
19 | * | |
20 | * Voice: (301) 373-9600 | |
21 | * EMail: cups-info@cups.org | |
22 | * WWW: http://www.cups.org | |
23 | * | |
24 | * Contents: | |
25 | * | |
26 | * main() - Main entry for the CUPS scheduler. | |
27 | * cupsdClosePipe() - Close a pipe as necessary. | |
28 | * cupsdOpenPipe() - Create a pipe which is closed on exec. | |
ef416fc2 | 29 | * cupsdHoldSignals() - Hold child and termination signals. |
ef416fc2 | 30 | * cupsdReleaseSignals() - Release signals for delivery. |
31 | * cupsdSetString() - Set a string value. | |
32 | * cupsdSetStringf() - Set a formatted string value. | |
a4d04587 | 33 | * launchd_checkin() - Check-in with launchd and collect the |
34 | * listening fds. | |
f7deaa1a | 35 | * launchd_checkout() - Check-out with launchd. |
ef416fc2 | 36 | * parent_handler() - Catch USR1/CHLD signals... |
37 | * process_children() - Process all dead children... | |
38 | * sigchld_handler() - Handle 'child' signals from old processes. | |
39 | * sighup_handler() - Handle 'hangup' signals to reconfigure the | |
40 | * scheduler. | |
41 | * sigterm_handler() - Handle 'terminate' signals that stop the | |
42 | * scheduler. | |
43 | * select_timeout() - Calculate the select timeout value. | |
44 | * usage() - Show scheduler usage. | |
45 | */ | |
46 | ||
47 | /* | |
48 | * Include necessary headers... | |
49 | */ | |
50 | ||
51 | #define _MAIN_C_ | |
52 | #include "cupsd.h" | |
53 | #include <sys/resource.h> | |
54 | #include <syslog.h> | |
55 | #include <grp.h> | |
56 | ||
a4d04587 | 57 | #ifdef HAVE_LAUNCH_H |
58 | # include <launch.h> | |
59 | # include <libgen.h> | |
7594b224 | 60 | # define CUPS_KEEPALIVE CUPS_CACHEDIR "/org.cups.cupsd" |
f7deaa1a | 61 | /* Name of the launchd KeepAlive file */ |
62 | # ifndef LAUNCH_JOBKEY_KEEPALIVE | |
63 | # define LAUNCH_JOBKEY_KEEPALIVE "KeepAlive" | |
64 | # endif /* !LAUNCH_JOBKEY_KEEPALIVE */ | |
65 | # ifndef LAUNCH_JOBKEY_PATHSTATE | |
66 | # define LAUNCH_JOBKEY_PATHSTATE "PathState" | |
67 | # endif /* !LAUNCH_JOBKEY_PATHSTATE */ | |
68 | # ifndef LAUNCH_JOBKEY_SERVICEIPC | |
69 | # define LAUNCH_JOBKEY_SERVICEIPC "ServiceIPC" | |
70 | # endif /* !LAUNCH_JOBKEY_SERVICEIPC */ | |
a4d04587 | 71 | #endif /* HAVE_LAUNCH_H */ |
72 | ||
ef416fc2 | 73 | #if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO) |
74 | # include <malloc.h> | |
75 | #endif /* HAVE_MALLOC_H && HAVE_MALLINFO */ | |
fa73b229 | 76 | #ifdef HAVE_NOTIFY_H |
77 | # include <notify.h> | |
78 | #endif /* HAVE_NOTIFY_H */ | |
ef416fc2 | 79 | |
7594b224 | 80 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
81 | # include <dlfcn.h> | |
82 | #endif /* __APPLE__ && HAVE_DLFCN_H */ | |
83 | ||
ef416fc2 | 84 | |
85 | /* | |
86 | * Local functions... | |
87 | */ | |
88 | ||
a4d04587 | 89 | #ifdef HAVE_LAUNCHD |
411affcf | 90 | static void launchd_checkin(void); |
f7deaa1a | 91 | static void launchd_checkout(void); |
a4d04587 | 92 | #endif /* HAVE_LAUNCHD */ |
411affcf | 93 | static void parent_handler(int sig); |
94 | static void process_children(void); | |
95 | static void sigchld_handler(int sig); | |
96 | static void sighup_handler(int sig); | |
97 | static void sigterm_handler(int sig); | |
98 | static long select_timeout(int fds); | |
99 | static void usage(int status); | |
ef416fc2 | 100 | |
101 | ||
102 | /* | |
103 | * Local globals... | |
104 | */ | |
105 | ||
411affcf | 106 | static int parent_signal = 0; |
107 | /* Set to signal number from child */ | |
108 | static int holdcount = 0; /* Number of times "hold" was called */ | |
ef416fc2 | 109 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
411affcf | 110 | static sigset_t holdmask; /* Old POSIX signal mask */ |
ef416fc2 | 111 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ |
411affcf | 112 | static int dead_children = 0; |
113 | /* Dead children? */ | |
114 | static int stop_scheduler = 0; | |
115 | /* Should the scheduler stop? */ | |
116 | ||
7594b224 | 117 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
118 | static const char *PSQLibPath = "/usr/lib/libPrintServiceQuota.dylib"; | |
119 | static const char *PSQLibFuncName = "PSQUpdateQuota"; | |
120 | static void *PSQLibRef; /* libPrintServiceQuota.dylib */ | |
121 | #endif /* HAVE_DLFCN_H */ | |
122 | ||
ef416fc2 | 123 | |
124 | /* | |
125 | * 'main()' - Main entry for the CUPS scheduler. | |
126 | */ | |
127 | ||
128 | int /* O - Exit status */ | |
bd7854cb | 129 | main(int argc, /* I - Number of command-line args */ |
ef416fc2 | 130 | char *argv[]) /* I - Command-line arguments */ |
131 | { | |
132 | int i; /* Looping var */ | |
133 | char *opt; /* Option character */ | |
134 | int fg; /* Run in the foreground */ | |
bd7854cb | 135 | int fds; /* Number of ready descriptors */ |
ef416fc2 | 136 | cupsd_client_t *con; /* Current client */ |
137 | cupsd_job_t *job; /* Current job */ | |
138 | cupsd_listener_t *lis; /* Current listener */ | |
139 | time_t current_time, /* Current time */ | |
a4d04587 | 140 | activity, /* Client activity timer */ |
ef416fc2 | 141 | browse_time, /* Next browse send time */ |
142 | senddoc_time, /* Send-Document time */ | |
411affcf | 143 | expire_time, /* Subscription expire time */ |
411affcf | 144 | mallinfo_time; /* Malloc information time */ |
4400e98d | 145 | size_t string_count, /* String count */ |
146 | alloc_bytes, /* Allocated string bytes */ | |
147 | total_bytes; /* Total string bytes */ | |
f7deaa1a | 148 | long timeout; /* Timeout for cupsdDoSelect() */ |
ef416fc2 | 149 | struct rlimit limit; /* Runtime limit */ |
150 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
151 | struct sigaction action; /* Actions for POSIX signals */ | |
152 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
153 | #ifdef __sgi | |
154 | cups_file_t *fp; /* Fake lpsched lock file */ | |
155 | struct stat statbuf; /* Needed for checking lpsched FIFO */ | |
156 | #endif /* __sgi */ | |
a4d04587 | 157 | #if HAVE_LAUNCHD |
4400e98d | 158 | int launchd_idle_exit; |
a4d04587 | 159 | /* Idle exit on select timeout? */ |
160 | #endif /* HAVE_LAUNCHD */ | |
ef416fc2 | 161 | |
162 | ||
163 | /* | |
164 | * Check for command-line arguments... | |
165 | */ | |
166 | ||
4400e98d | 167 | fg = 0; |
ef416fc2 | 168 | |
09a101d6 | 169 | #ifdef HAVE_LAUNCHD |
170 | if (getenv("CUPSD_LAUNCHD")) | |
171 | { | |
172 | Launchd = 1; | |
173 | fg = 1; | |
174 | } | |
175 | #endif /* HAVE_LAUNCHD */ | |
176 | ||
ef416fc2 | 177 | for (i = 1; i < argc; i ++) |
178 | if (argv[i][0] == '-') | |
179 | for (opt = argv[i] + 1; *opt != '\0'; opt ++) | |
180 | switch (*opt) | |
181 | { | |
182 | case 'c' : /* Configuration file */ | |
183 | i ++; | |
184 | if (i >= argc) | |
a4d04587 | 185 | { |
186 | _cupsLangPuts(stderr, _("cupsd: Expected config filename " | |
187 | "after \"-c\" option!\n")); | |
188 | usage(1); | |
189 | } | |
ef416fc2 | 190 | |
191 | if (argv[i][0] == '/') | |
192 | { | |
193 | /* | |
194 | * Absolute directory... | |
195 | */ | |
196 | ||
197 | cupsdSetString(&ConfigurationFile, argv[i]); | |
198 | } | |
199 | else | |
200 | { | |
201 | /* | |
202 | * Relative directory... | |
203 | */ | |
204 | ||
09ec0018 | 205 | char *current; /* Current directory */ |
ef416fc2 | 206 | |
207 | ||
09ec0018 | 208 | /* |
209 | * Allocate a buffer for the current working directory to | |
210 | * reduce run-time stack usage; this approximates the | |
211 | * behavior of some implementations of getcwd() when they | |
212 | * are passed a NULL pointer. | |
213 | */ | |
214 | ||
215 | current = malloc(1024); | |
216 | getcwd(current, 1024); | |
217 | ||
ef416fc2 | 218 | cupsdSetStringf(&ConfigurationFile, "%s/%s", current, argv[i]); |
09ec0018 | 219 | |
220 | free(current); | |
ef416fc2 | 221 | } |
222 | break; | |
223 | ||
224 | case 'f' : /* Run in foreground... */ | |
225 | fg = 1; | |
226 | break; | |
227 | ||
bd7854cb | 228 | case 'F' : /* Run in foreground, but disconnect from terminal... */ |
ef416fc2 | 229 | fg = -1; |
230 | break; | |
231 | ||
a4d04587 | 232 | case 'h' : /* Show usage/help */ |
233 | usage(0); | |
234 | break; | |
235 | ||
236 | case 'l' : /* Started by launchd... */ | |
237 | #ifdef HAVE_LAUNCHD | |
4400e98d | 238 | Launchd = 1; |
a4d04587 | 239 | fg = 1; |
240 | #else | |
241 | _cupsLangPuts(stderr, _("cupsd: launchd(8) support not compiled " | |
242 | "in, running in normal mode.\n")); | |
243 | fg = 0; | |
244 | #endif /* HAVE_LAUNCHD */ | |
245 | break; | |
246 | ||
a74454a7 | 247 | case 'p' : /* Stop immediately for profiling */ |
248 | puts("Warning: -p option is for internal testing use only!"); | |
249 | stop_scheduler = 1; | |
250 | fg = 1; | |
251 | break; | |
252 | ||
ef416fc2 | 253 | default : /* Unknown option */ |
a4d04587 | 254 | _cupsLangPrintf(stderr, _("cupsd: Unknown option \"%c\" - " |
255 | "aborting!\n"), *opt); | |
256 | usage(1); | |
ef416fc2 | 257 | break; |
258 | } | |
259 | else | |
260 | { | |
a4d04587 | 261 | _cupsLangPrintf(stderr, _("cupsd: Unknown argument \"%s\" - aborting!\n"), |
262 | argv[i]); | |
263 | usage(1); | |
ef416fc2 | 264 | } |
265 | ||
266 | if (!ConfigurationFile) | |
267 | cupsdSetString(&ConfigurationFile, CUPS_SERVERROOT "/cupsd.conf"); | |
268 | ||
269 | /* | |
270 | * If the user hasn't specified "-f", run in the background... | |
271 | */ | |
272 | ||
273 | if (!fg) | |
274 | { | |
275 | /* | |
276 | * Setup signal handlers for the parent... | |
277 | */ | |
278 | ||
279 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
280 | sigset(SIGUSR1, parent_handler); | |
281 | sigset(SIGCHLD, parent_handler); | |
282 | ||
283 | sigset(SIGHUP, SIG_IGN); | |
284 | #elif defined(HAVE_SIGACTION) | |
285 | memset(&action, 0, sizeof(action)); | |
286 | sigemptyset(&action.sa_mask); | |
287 | sigaddset(&action.sa_mask, SIGUSR1); | |
288 | action.sa_handler = parent_handler; | |
289 | sigaction(SIGUSR1, &action, NULL); | |
290 | sigaction(SIGCHLD, &action, NULL); | |
291 | ||
292 | sigemptyset(&action.sa_mask); | |
293 | action.sa_handler = SIG_IGN; | |
294 | sigaction(SIGHUP, &action, NULL); | |
295 | #else | |
296 | signal(SIGUSR1, parent_handler); | |
297 | signal(SIGCLD, parent_handler); | |
298 | ||
299 | signal(SIGHUP, SIG_IGN); | |
300 | #endif /* HAVE_SIGSET */ | |
301 | ||
302 | if (fork() > 0) | |
303 | { | |
304 | /* | |
305 | * OK, wait for the child to startup and send us SIGUSR1 or to crash | |
306 | * and the OS send us SIGCHLD... We also need to ignore SIGHUP which | |
307 | * might be sent by the init script to restart the scheduler... | |
308 | */ | |
309 | ||
310 | for (; parent_signal == 0;) | |
311 | sleep(1); | |
312 | ||
313 | if (parent_signal == SIGUSR1) | |
314 | return (0); | |
315 | ||
316 | if (wait(&i) < 0) | |
317 | { | |
318 | perror("cupsd"); | |
319 | return (1); | |
320 | } | |
321 | else if (WIFEXITED(i)) | |
322 | { | |
bd7854cb | 323 | fprintf(stderr, "cupsd: Child exited with status %d!\n", |
324 | WEXITSTATUS(i)); | |
ef416fc2 | 325 | return (2); |
326 | } | |
327 | else | |
328 | { | |
329 | fprintf(stderr, "cupsd: Child exited on signal %d!\n", WTERMSIG(i)); | |
330 | return (3); | |
331 | } | |
332 | } | |
333 | } | |
334 | ||
335 | if (fg < 1) | |
336 | { | |
337 | /* | |
338 | * Make sure we aren't tying up any filesystems... | |
339 | */ | |
340 | ||
341 | chdir("/"); | |
342 | ||
343 | #ifndef DEBUG | |
344 | /* | |
345 | * Disable core dumps... | |
346 | */ | |
347 | ||
348 | getrlimit(RLIMIT_CORE, &limit); | |
349 | limit.rlim_cur = 0; | |
350 | setrlimit(RLIMIT_CORE, &limit); | |
351 | ||
352 | /* | |
353 | * Disconnect from the controlling terminal... | |
354 | */ | |
355 | ||
356 | setsid(); | |
357 | ||
358 | /* | |
359 | * Close all open files... | |
360 | */ | |
361 | ||
362 | getrlimit(RLIMIT_NOFILE, &limit); | |
363 | ||
b94498cf | 364 | for (i = 0; i < limit.rlim_cur && i < 1024; i ++) |
ef416fc2 | 365 | close(i); |
366 | #endif /* DEBUG */ | |
367 | } | |
368 | ||
369 | /* | |
370 | * Set the timezone info... | |
371 | */ | |
372 | ||
373 | tzset(); | |
374 | ||
375 | #ifdef LC_TIME | |
376 | setlocale(LC_TIME, ""); | |
377 | #endif /* LC_TIME */ | |
378 | ||
379 | /* | |
380 | * Set the maximum number of files... | |
381 | */ | |
382 | ||
383 | getrlimit(RLIMIT_NOFILE, &limit); | |
384 | ||
f7deaa1a | 385 | #if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE) |
f7faf1f5 | 386 | if (limit.rlim_max > FD_SETSIZE) |
387 | MaxFDs = FD_SETSIZE; | |
ef416fc2 | 388 | else |
f7deaa1a | 389 | #endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */ |
390 | #ifdef RLIM_INFINITY | |
391 | if (limit.rlim_max == RLIM_INFINITY) | |
392 | MaxFDs = 16384; | |
393 | else | |
394 | #endif /* RLIM_INFINITY */ | |
ef416fc2 | 395 | MaxFDs = limit.rlim_max; |
396 | ||
397 | limit.rlim_cur = MaxFDs; | |
398 | ||
399 | setrlimit(RLIMIT_NOFILE, &limit); | |
400 | ||
f7deaa1a | 401 | cupsdStartSelect(); |
ef416fc2 | 402 | |
403 | /* | |
404 | * Read configuration... | |
405 | */ | |
406 | ||
407 | if (!cupsdReadConfiguration()) | |
408 | { | |
409 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
410 | ConfigurationFile); | |
411 | return (1); | |
412 | } | |
413 | ||
a4d04587 | 414 | #if HAVE_LAUNCHD |
4400e98d | 415 | if (Launchd) |
a4d04587 | 416 | { |
417 | /* | |
b94498cf | 418 | * If we were started by launchd get the listen sockets file descriptors... |
f7deaa1a | 419 | */ |
a4d04587 | 420 | |
421 | launchd_checkin(); | |
422 | } | |
423 | #endif /* HAVE_LAUNCHD */ | |
424 | ||
7594b224 | 425 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
426 | /* | |
427 | * Load Print Service quota enforcement library (X Server only) | |
428 | */ | |
429 | ||
430 | PSQLibRef = dlopen(PSQLibPath, RTLD_LAZY); | |
431 | ||
432 | if (PSQLibRef) | |
433 | PSQUpdateQuotaProc = dlsym(PSQLibRef, PSQLibFuncName); | |
434 | #endif /* __APPLE__ && HAVE_DLFCN_H */ | |
435 | ||
a4d04587 | 436 | /* |
437 | * Startup the server... | |
438 | */ | |
439 | ||
440 | cupsdStartServer(); | |
441 | ||
ef416fc2 | 442 | /* |
443 | * Catch hangup and child signals and ignore broken pipes... | |
444 | */ | |
445 | ||
446 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
e1d6a774 | 447 | sigset(SIGCHLD, sigchld_handler); |
4744bd90 | 448 | sigset(SIGHUP, sighup_handler); |
ef416fc2 | 449 | sigset(SIGPIPE, SIG_IGN); |
450 | sigset(SIGTERM, sigterm_handler); | |
451 | #elif defined(HAVE_SIGACTION) | |
452 | memset(&action, 0, sizeof(action)); | |
453 | ||
e1d6a774 | 454 | sigemptyset(&action.sa_mask); |
455 | sigaddset(&action.sa_mask, SIGTERM); | |
456 | sigaddset(&action.sa_mask, SIGCHLD); | |
457 | action.sa_handler = sigchld_handler; | |
458 | sigaction(SIGCHLD, &action, NULL); | |
459 | ||
ef416fc2 | 460 | sigemptyset(&action.sa_mask); |
461 | sigaddset(&action.sa_mask, SIGHUP); | |
4744bd90 | 462 | action.sa_handler = sighup_handler; |
ef416fc2 | 463 | sigaction(SIGHUP, &action, NULL); |
464 | ||
465 | sigemptyset(&action.sa_mask); | |
466 | action.sa_handler = SIG_IGN; | |
467 | sigaction(SIGPIPE, &action, NULL); | |
468 | ||
469 | sigemptyset(&action.sa_mask); | |
470 | sigaddset(&action.sa_mask, SIGTERM); | |
471 | sigaddset(&action.sa_mask, SIGCHLD); | |
472 | action.sa_handler = sigterm_handler; | |
473 | sigaction(SIGTERM, &action, NULL); | |
474 | #else | |
e1d6a774 | 475 | signal(SIGCLD, sigchld_handler); /* No, SIGCLD isn't a typo... */ |
4744bd90 | 476 | signal(SIGHUP, sighup_handler); |
ef416fc2 | 477 | signal(SIGPIPE, SIG_IGN); |
478 | signal(SIGTERM, sigterm_handler); | |
479 | #endif /* HAVE_SIGSET */ | |
480 | ||
481 | #ifdef __sgi | |
482 | /* | |
483 | * Try to create a fake lpsched lock file if one is not already there. | |
484 | * Some Adobe applications need it under IRIX in order to enable | |
485 | * printing... | |
486 | */ | |
487 | ||
488 | if ((fp = cupsFileOpen("/var/spool/lp/SCHEDLOCK", "w")) == NULL) | |
489 | { | |
490 | syslog(LOG_LPR, "Unable to create fake lpsched lock file " | |
491 | "\"/var/spool/lp/SCHEDLOCK\"\' - %s!", | |
492 | strerror(errno)); | |
493 | } | |
494 | else | |
495 | { | |
496 | fchmod(cupsFileNumber(fp), 0644); | |
497 | fchown(cupsFileNumber(fp), User, Group); | |
498 | ||
499 | cupsFileClose(fp); | |
500 | } | |
501 | #endif /* __sgi */ | |
502 | ||
503 | /* | |
504 | * Initialize authentication certificates... | |
505 | */ | |
506 | ||
507 | cupsdInitCerts(); | |
508 | ||
509 | /* | |
510 | * If we are running in the background, signal the parent process that | |
511 | * we are up and running... | |
512 | */ | |
513 | ||
514 | if (!fg) | |
515 | { | |
516 | /* | |
517 | * Send a signal to the parent process, but only if the parent is | |
518 | * not PID 1 (init). This avoids accidentally shutting down the | |
519 | * system on OpenBSD if you CTRL-C the server before it is up... | |
520 | */ | |
521 | ||
522 | i = getppid(); /* Save parent PID to avoid race condition */ | |
523 | ||
524 | if (i != 1) | |
525 | kill(i, SIGUSR1); | |
526 | } | |
527 | ||
e1d6a774 | 528 | #ifdef __APPLE__ |
09ec0018 | 529 | /* |
530 | * Start power management framework... | |
531 | */ | |
532 | ||
533 | cupsdStartSystemMonitor(); | |
e1d6a774 | 534 | #endif /* __APPLE__ */ |
ef416fc2 | 535 | |
536 | /* | |
537 | * Start any pending print jobs... | |
538 | */ | |
539 | ||
540 | cupsdCheckJobs(); | |
541 | ||
542 | /* | |
543 | * Loop forever... | |
544 | */ | |
545 | ||
ef416fc2 | 546 | mallinfo_time = 0; |
ef416fc2 | 547 | browse_time = time(NULL); |
548 | senddoc_time = time(NULL); | |
549 | expire_time = time(NULL); | |
550 | fds = 1; | |
551 | ||
552 | while (!stop_scheduler) | |
553 | { | |
554 | #ifdef DEBUG | |
555 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
556 | "main: Top of loop, dead_children=%d, NeedReload=%d", | |
557 | dead_children, NeedReload); | |
558 | #endif /* DEBUG */ | |
559 | ||
560 | /* | |
561 | * Check if there are dead children to handle... | |
562 | */ | |
563 | ||
564 | if (dead_children) | |
565 | process_children(); | |
566 | ||
567 | /* | |
568 | * Check if we need to load the server configuration file... | |
569 | */ | |
570 | ||
571 | if (NeedReload) | |
572 | { | |
573 | /* | |
574 | * Close any idle clients... | |
575 | */ | |
576 | ||
bd7854cb | 577 | if (cupsArrayCount(Clients) > 0) |
ef416fc2 | 578 | { |
bd7854cb | 579 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
580 | con; | |
581 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 582 | if (con->http.state == HTTP_WAITING) |
ef416fc2 | 583 | cupsdCloseClient(con); |
ef416fc2 | 584 | else |
585 | con->http.keep_alive = HTTP_KEEPALIVE_OFF; | |
586 | ||
587 | cupsdPauseListening(); | |
588 | } | |
589 | ||
590 | /* | |
591 | * Check for any active jobs... | |
592 | */ | |
593 | ||
594 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
595 | job; | |
596 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 597 | if (job->state_value == IPP_JOB_PROCESSING) |
ef416fc2 | 598 | break; |
599 | ||
600 | /* | |
601 | * Restart if all clients are closed and all jobs finished, or | |
602 | * if the reload timeout has elapsed... | |
603 | */ | |
604 | ||
bd7854cb | 605 | if ((cupsArrayCount(Clients) == 0 && |
606 | (!job || NeedReload != RELOAD_ALL)) || | |
ef416fc2 | 607 | (time(NULL) - ReloadTime) >= ReloadTimeout) |
608 | { | |
a4d04587 | 609 | /* |
610 | * Shutdown the server... | |
611 | */ | |
612 | ||
613 | cupsdStopServer(); | |
614 | ||
615 | /* | |
616 | * Read configuration... | |
617 | */ | |
618 | ||
ef416fc2 | 619 | if (!cupsdReadConfiguration()) |
620 | { | |
621 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
622 | ConfigurationFile); | |
623 | break; | |
624 | } | |
a4d04587 | 625 | |
626 | #if HAVE_LAUNCHD | |
4400e98d | 627 | if (Launchd) |
a4d04587 | 628 | { |
b94498cf | 629 | /* |
630 | * If we were started by launchd get the listen sockets file descriptors... | |
631 | */ | |
632 | ||
a4d04587 | 633 | launchd_checkin(); |
634 | } | |
635 | #endif /* HAVE_LAUNCHD */ | |
636 | ||
637 | /* | |
638 | * Startup the server... | |
639 | */ | |
640 | ||
641 | cupsdStartServer(); | |
ef416fc2 | 642 | } |
643 | } | |
644 | ||
645 | /* | |
f7deaa1a | 646 | * Check for available input or ready output. If cupsdDoSelect() |
647 | * returns 0 or -1, something bad happened and we should exit | |
648 | * immediately. | |
ef416fc2 | 649 | * |
650 | * Note that we at least have one listening socket open at all | |
651 | * times. | |
652 | */ | |
653 | ||
f7deaa1a | 654 | timeout = select_timeout(fds); |
ef416fc2 | 655 | |
a4d04587 | 656 | #if HAVE_LAUNCHD |
657 | /* | |
658 | * If no other work is scheduled and we're being controlled by | |
411affcf | 659 | * launchd then timeout after 'LaunchdTimeout' seconds of |
a4d04587 | 660 | * inactivity... |
661 | */ | |
662 | ||
f7deaa1a | 663 | if (timeout == 86400 && Launchd && LaunchdTimeout && !NumPolled && |
664 | (!Browsing || | |
665 | (!BrowseRemoteProtocols && | |
666 | (!NumBrowsers || !BrowseLocalProtocols || | |
667 | cupsArrayCount(Printers) == 0)))) | |
a4d04587 | 668 | { |
f7deaa1a | 669 | timeout = LaunchdTimeout; |
a4d04587 | 670 | launchd_idle_exit = 1; |
671 | } | |
672 | else | |
673 | launchd_idle_exit = 0; | |
674 | #endif /* HAVE_LAUNCHD */ | |
675 | ||
f7deaa1a | 676 | if ((fds = cupsdDoSelect(timeout)) < 0) |
ef416fc2 | 677 | { |
ef416fc2 | 678 | /* |
679 | * Got an error from select! | |
680 | */ | |
681 | ||
f7deaa1a | 682 | #ifdef HAVE_DNSSD |
683 | cupsd_printer_t *p; /* Current printer */ | |
684 | #endif /* HAVE_DNSSD */ | |
685 | ||
686 | ||
687 | if (errno == EINTR) /* Just interrupted by a signal */ | |
ef416fc2 | 688 | continue; |
689 | ||
690 | /* | |
691 | * Log all sorts of debug info to help track down the problem. | |
692 | */ | |
693 | ||
f7deaa1a | 694 | cupsdLogMessage(CUPSD_LOG_EMERG, "cupsdDoSelect() failed - %s!", |
ef416fc2 | 695 | strerror(errno)); |
696 | ||
bd7854cb | 697 | for (i = 0, con = (cupsd_client_t *)cupsArrayFirst(Clients); |
698 | con; | |
699 | i ++, con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 700 | cupsdLogMessage(CUPSD_LOG_EMERG, |
701 | "Clients[%d] = %d, file = %d, state = %d", | |
702 | i, con->http.fd, con->file, con->http.state); | |
703 | ||
bd7854cb | 704 | for (i = 0, lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
705 | lis; | |
706 | i ++, lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
ef416fc2 | 707 | cupsdLogMessage(CUPSD_LOG_EMERG, "Listeners[%d] = %d", i, lis->fd); |
708 | ||
709 | cupsdLogMessage(CUPSD_LOG_EMERG, "BrowseSocket = %d", BrowseSocket); | |
710 | ||
923edb68 | 711 | cupsdLogMessage(CUPSD_LOG_EMERG, "CGIPipes[0] = %d", CGIPipes[0]); |
712 | ||
09ec0018 | 713 | #ifdef __APPLE__ |
714 | cupsdLogMessage(CUPSD_LOG_EMERG, "SysEventPipes[0] = %d", | |
715 | SysEventPipes[0]); | |
716 | #endif /* __APPLE__ */ | |
717 | ||
ef416fc2 | 718 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); |
719 | job; | |
720 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
721 | cupsdLogMessage(CUPSD_LOG_EMERG, "Jobs[%d] = %d < [%d %d] > [%d %d]", | |
722 | job->id, | |
723 | job->status_buffer ? job->status_buffer->fd : -1, | |
724 | job->print_pipes[0], job->print_pipes[1], | |
725 | job->back_pipes[0], job->back_pipes[1]); | |
f7deaa1a | 726 | |
727 | #ifdef HAVE_DNSSD | |
728 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
729 | p; | |
730 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
731 | cupsdLogMessage(CUPSD_LOG_EMERG, "printer[%s] %d", p->name, | |
732 | p->dnssd_ipp_fd); | |
733 | #endif /* HAVE_DNSSD */ | |
734 | ||
ef416fc2 | 735 | break; |
736 | } | |
737 | ||
738 | current_time = time(NULL); | |
739 | ||
a4d04587 | 740 | #if HAVE_LAUNCHD |
741 | /* | |
411affcf | 742 | * If no other work was scheduled and we're being controlled by launchd |
a4d04587 | 743 | * then timeout after 'LaunchdTimeout' seconds of inactivity... |
744 | */ | |
745 | ||
746 | if (!fds && launchd_idle_exit) | |
747 | { | |
748 | cupsdLogMessage(CUPSD_LOG_INFO, | |
749 | "Printer sharing is off and there are no jobs pending, " | |
750 | "will restart on demand."); | |
751 | stop_scheduler = 1; | |
752 | break; | |
753 | } | |
754 | #endif /* HAVE_LAUNCHD */ | |
755 | ||
ef416fc2 | 756 | /* |
bd7854cb | 757 | * Expire subscriptions and unload completed jobs as needed... |
ef416fc2 | 758 | */ |
759 | ||
bd7854cb | 760 | if (current_time > expire_time) |
ef416fc2 | 761 | { |
bd7854cb | 762 | if (cupsArrayCount(Subscriptions) > 0) |
763 | cupsdExpireSubscriptions(NULL, NULL); | |
764 | ||
765 | cupsdUnloadCompletedJobs(); | |
ef416fc2 | 766 | |
767 | expire_time = current_time; | |
768 | } | |
769 | ||
770 | /* | |
771 | * Update the browse list as needed... | |
772 | */ | |
773 | ||
f7deaa1a | 774 | if (Browsing) |
ef416fc2 | 775 | { |
ef416fc2 | 776 | #ifdef HAVE_LIBSLP |
b423cd4c | 777 | if ((BrowseRemoteProtocols & BROWSE_SLP) && |
ef416fc2 | 778 | BrowseSLPRefresh <= current_time) |
779 | cupsdUpdateSLPBrowse(); | |
780 | #endif /* HAVE_LIBSLP */ | |
b423cd4c | 781 | |
782 | #ifdef HAVE_LDAP | |
783 | if ((BrowseRemoteProtocols & BROWSE_LDAP) && | |
784 | BrowseLDAPRefresh <= current_time) | |
785 | cupsdUpdateLDAPBrowse(); | |
786 | #endif /* HAVE_LDAP */ | |
fa73b229 | 787 | } |
ef416fc2 | 788 | |
fa73b229 | 789 | if (Browsing && BrowseLocalProtocols && current_time > browse_time) |
790 | { | |
791 | cupsdSendBrowseList(); | |
792 | browse_time = current_time; | |
ef416fc2 | 793 | } |
794 | ||
795 | /* | |
f7deaa1a | 796 | * Update the root certificate once every 5 minutes if we have client |
797 | * connections... | |
ef416fc2 | 798 | */ |
799 | ||
f7deaa1a | 800 | if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration && |
801 | !RunUser && cupsArrayCount(Clients)) | |
802 | { | |
803 | /* | |
804 | * Update the root certificate... | |
805 | */ | |
806 | ||
807 | cupsdDeleteCert(0); | |
808 | cupsdAddCert(0, "root"); | |
809 | } | |
ef416fc2 | 810 | |
811 | /* | |
812 | * Check for new data on the client sockets... | |
813 | */ | |
814 | ||
bd7854cb | 815 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
816 | con; | |
817 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 818 | { |
819 | /* | |
f7deaa1a | 820 | * Process pending data in the input buffer... |
ef416fc2 | 821 | */ |
822 | ||
f7deaa1a | 823 | if (con->http.used) |
ef416fc2 | 824 | { |
f7deaa1a | 825 | cupsdReadClient(con); |
826 | continue; | |
ef416fc2 | 827 | } |
828 | ||
829 | /* | |
830 | * Check the activity and close old clients... | |
831 | */ | |
832 | ||
833 | activity = current_time - Timeout; | |
834 | if (con->http.activity < activity && !con->pipe_pid) | |
835 | { | |
836 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
837 | "Closing client %d after %d seconds of inactivity...", | |
838 | con->http.fd, Timeout); | |
839 | ||
840 | cupsdCloseClient(con); | |
ef416fc2 | 841 | continue; |
842 | } | |
843 | } | |
844 | ||
845 | /* | |
846 | * Update any pending multi-file documents... | |
847 | */ | |
848 | ||
849 | if ((current_time - senddoc_time) >= 10) | |
850 | { | |
851 | cupsdCheckJobs(); | |
852 | senddoc_time = current_time; | |
853 | } | |
854 | ||
ef416fc2 | 855 | /* |
856 | * Log memory usage every minute... | |
857 | */ | |
858 | ||
bd7854cb | 859 | if ((current_time - mallinfo_time) >= 60 && LogLevel >= CUPSD_LOG_DEBUG2) |
ef416fc2 | 860 | { |
4400e98d | 861 | #ifdef HAVE_MALLINFO |
ef416fc2 | 862 | struct mallinfo mem; /* Malloc information */ |
863 | ||
864 | ||
865 | mem = mallinfo(); | |
bd7854cb | 866 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
ef416fc2 | 867 | "mallinfo: arena = %d, used = %d, free = %d\n", |
868 | mem.arena, mem.usmblks + mem.uordblks, | |
869 | mem.fsmblks + mem.fordblks); | |
4400e98d | 870 | #endif /* HAVE_MALLINFO */ |
871 | ||
757d2cad | 872 | string_count = _cupsStrStatistics(&alloc_bytes, &total_bytes); |
bd7854cb | 873 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
4400e98d | 874 | "stringpool: " CUPS_LLFMT " strings, " |
875 | CUPS_LLFMT " allocated, " CUPS_LLFMT " total bytes", | |
876 | CUPS_LLCAST string_count, CUPS_LLCAST alloc_bytes, | |
877 | CUPS_LLCAST total_bytes); | |
878 | ||
ef416fc2 | 879 | mallinfo_time = current_time; |
880 | } | |
ef416fc2 | 881 | |
fa73b229 | 882 | /* |
883 | * Handle OS-specific event notification for any events that have | |
884 | * accumulated. Don't send these more than once a second... | |
885 | */ | |
886 | ||
e53920b9 | 887 | if (LastEvent) |
fa73b229 | 888 | { |
889 | #ifdef HAVE_NOTIFY_POST | |
890 | if (LastEvent & CUPSD_EVENT_PRINTER_CHANGED) | |
891 | { | |
e00b005a | 892 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 893 | "notify_post(\"com.apple.printerListChange\")"); |
894 | notify_post("com.apple.printerListChange"); | |
895 | } | |
896 | ||
897 | if (LastEvent & CUPSD_EVENT_PRINTER_STATE_CHANGED) | |
898 | { | |
e00b005a | 899 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 900 | "notify_post(\"com.apple.printerHistoryChange\")"); |
901 | notify_post("com.apple.printerHistoryChange"); | |
902 | } | |
903 | ||
904 | if (LastEvent & (CUPSD_EVENT_JOB_STATE_CHANGED | | |
905 | CUPSD_EVENT_JOB_CONFIG_CHANGED | | |
906 | CUPSD_EVENT_JOB_PROGRESS)) | |
907 | { | |
e00b005a | 908 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 909 | "notify_post(\"com.apple.jobChange\")"); |
910 | notify_post("com.apple.jobChange"); | |
911 | } | |
912 | #endif /* HAVE_NOTIFY_POST */ | |
913 | ||
914 | /* | |
e53920b9 | 915 | * Reset the accumulated events... |
fa73b229 | 916 | */ |
917 | ||
fa73b229 | 918 | LastEvent = CUPSD_EVENT_NONE; |
919 | } | |
ef416fc2 | 920 | } |
921 | ||
922 | /* | |
923 | * Log a message based on what happened... | |
924 | */ | |
925 | ||
926 | if (stop_scheduler) | |
927 | cupsdLogMessage(CUPSD_LOG_INFO, "Scheduler shutting down normally."); | |
928 | else | |
929 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
930 | "Scheduler shutting down due to program error."); | |
931 | ||
932 | /* | |
933 | * Close all network clients and stop all jobs... | |
934 | */ | |
935 | ||
936 | cupsdStopServer(); | |
937 | ||
bd7854cb | 938 | cupsdFreeAllJobs(); |
ef416fc2 | 939 | |
e1d6a774 | 940 | #ifdef __APPLE__ |
09ec0018 | 941 | cupsdStopSystemMonitor(); |
e1d6a774 | 942 | #endif /* __APPLE__ */ |
09ec0018 | 943 | |
a4d04587 | 944 | #ifdef HAVE_LAUNCHD |
945 | /* | |
b94498cf | 946 | * Update the launchd KeepAlive file as needed... |
a4d04587 | 947 | */ |
948 | ||
f7deaa1a | 949 | if (Launchd) |
f7deaa1a | 950 | launchd_checkout(); |
b94498cf | 951 | #endif /* HAVE_LAUNCHD */ |
411affcf | 952 | |
b94498cf | 953 | #ifdef __APPLE__ |
954 | #ifdef HAVE_DLFCN_H | |
955 | /* | |
956 | * Unload Print Service quota enforcement library (X Server only) | |
957 | */ | |
411affcf | 958 | |
b94498cf | 959 | PSQUpdateQuotaProc = NULL; |
960 | if (PSQLibRef) | |
961 | { | |
962 | dlclose(PSQLibRef); | |
963 | PSQLibRef = NULL; | |
f7deaa1a | 964 | } |
b94498cf | 965 | #endif /* HAVE_DLFCN_H */ |
966 | #endif /* __APPLE__ */ | |
a4d04587 | 967 | |
ef416fc2 | 968 | #ifdef __sgi |
969 | /* | |
970 | * Remove the fake IRIX lpsched lock file, but only if the existing | |
971 | * file is not a FIFO which indicates that the real IRIX lpsched is | |
972 | * running... | |
973 | */ | |
974 | ||
975 | if (!stat("/var/spool/lp/FIFO", &statbuf)) | |
976 | if (!S_ISFIFO(statbuf.st_mode)) | |
977 | unlink("/var/spool/lp/SCHEDLOCK"); | |
978 | #endif /* __sgi */ | |
979 | ||
f7deaa1a | 980 | cupsdStopSelect(); |
ef416fc2 | 981 | |
982 | return (!stop_scheduler); | |
983 | } | |
984 | ||
985 | ||
986 | /* | |
987 | * 'cupsdClosePipe()' - Close a pipe as necessary. | |
988 | */ | |
989 | ||
990 | void | |
991 | cupsdClosePipe(int *fds) /* I - Pipe file descriptors (2) */ | |
992 | { | |
993 | /* | |
994 | * Close file descriptors as needed... | |
995 | */ | |
996 | ||
997 | if (fds[0] >= 0) | |
998 | { | |
999 | close(fds[0]); | |
1000 | fds[0] = -1; | |
1001 | } | |
1002 | ||
1003 | if (fds[1] >= 0) | |
1004 | { | |
1005 | close(fds[1]); | |
1006 | fds[1] = -1; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | ||
1011 | /* | |
1012 | * 'cupsdOpenPipe()' - Create a pipe which is closed on exec. | |
1013 | */ | |
1014 | ||
1015 | int /* O - 0 on success, -1 on error */ | |
1016 | cupsdOpenPipe(int *fds) /* O - Pipe file descriptors (2) */ | |
1017 | { | |
1018 | /* | |
1019 | * Create the pipe... | |
1020 | */ | |
1021 | ||
1022 | if (pipe(fds)) | |
e1d6a774 | 1023 | { |
1024 | fds[0] = -1; | |
1025 | fds[1] = -1; | |
1026 | ||
ef416fc2 | 1027 | return (-1); |
e1d6a774 | 1028 | } |
ef416fc2 | 1029 | |
1030 | /* | |
1031 | * Set the "close on exec" flag on each end of the pipe... | |
1032 | */ | |
1033 | ||
1034 | if (fcntl(fds[0], F_SETFD, fcntl(fds[0], F_GETFD) | FD_CLOEXEC)) | |
1035 | { | |
1036 | close(fds[0]); | |
1037 | close(fds[1]); | |
e1d6a774 | 1038 | |
1039 | fds[0] = -1; | |
1040 | fds[1] = -1; | |
1041 | ||
ef416fc2 | 1042 | return (-1); |
1043 | } | |
1044 | ||
1045 | if (fcntl(fds[1], F_SETFD, fcntl(fds[1], F_GETFD) | FD_CLOEXEC)) | |
1046 | { | |
1047 | close(fds[0]); | |
1048 | close(fds[1]); | |
e1d6a774 | 1049 | |
1050 | fds[0] = -1; | |
1051 | fds[1] = -1; | |
1052 | ||
ef416fc2 | 1053 | return (-1); |
1054 | } | |
1055 | ||
1056 | /* | |
1057 | * Return 0 indicating success... | |
1058 | */ | |
1059 | ||
1060 | return (0); | |
1061 | } | |
1062 | ||
1063 | ||
ef416fc2 | 1064 | /* |
1065 | * 'cupsdClearString()' - Clear a string. | |
1066 | */ | |
1067 | ||
1068 | void | |
1069 | cupsdClearString(char **s) /* O - String value */ | |
1070 | { | |
1071 | if (s && *s) | |
1072 | { | |
e53920b9 | 1073 | _cupsStrFree(*s); |
ef416fc2 | 1074 | *s = NULL; |
1075 | } | |
1076 | } | |
1077 | ||
1078 | ||
1079 | /* | |
1080 | * 'cupsdHoldSignals()' - Hold child and termination signals. | |
1081 | */ | |
1082 | ||
1083 | void | |
1084 | cupsdHoldSignals(void) | |
1085 | { | |
1086 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
1087 | sigset_t newmask; /* New POSIX signal mask */ | |
1088 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
1089 | ||
1090 | ||
1091 | holdcount ++; | |
1092 | if (holdcount > 1) | |
1093 | return; | |
1094 | ||
1095 | #ifdef HAVE_SIGSET | |
1096 | sighold(SIGTERM); | |
1097 | sighold(SIGCHLD); | |
1098 | #elif defined(HAVE_SIGACTION) | |
1099 | sigemptyset(&newmask); | |
1100 | sigaddset(&newmask, SIGTERM); | |
1101 | sigaddset(&newmask, SIGCHLD); | |
1102 | sigprocmask(SIG_BLOCK, &newmask, &holdmask); | |
1103 | #endif /* HAVE_SIGSET */ | |
1104 | } | |
1105 | ||
1106 | ||
ef416fc2 | 1107 | /* |
1108 | * 'cupsdReleaseSignals()' - Release signals for delivery. | |
1109 | */ | |
1110 | ||
1111 | void | |
1112 | cupsdReleaseSignals(void) | |
1113 | { | |
1114 | holdcount --; | |
1115 | if (holdcount > 0) | |
1116 | return; | |
1117 | ||
1118 | #ifdef HAVE_SIGSET | |
1119 | sigrelse(SIGTERM); | |
1120 | sigrelse(SIGCHLD); | |
1121 | #elif defined(HAVE_SIGACTION) | |
1122 | sigprocmask(SIG_SETMASK, &holdmask, NULL); | |
1123 | #endif /* HAVE_SIGSET */ | |
1124 | } | |
1125 | ||
1126 | ||
1127 | /* | |
1128 | * 'cupsdSetString()' - Set a string value. | |
1129 | */ | |
1130 | ||
1131 | void | |
1132 | cupsdSetString(char **s, /* O - New string */ | |
1133 | const char *v) /* I - String value */ | |
1134 | { | |
1135 | if (!s || *s == v) | |
1136 | return; | |
1137 | ||
1138 | if (*s) | |
e53920b9 | 1139 | _cupsStrFree(*s); |
ef416fc2 | 1140 | |
1141 | if (v) | |
e53920b9 | 1142 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1143 | else |
1144 | *s = NULL; | |
1145 | } | |
1146 | ||
1147 | ||
1148 | /* | |
1149 | * 'cupsdSetStringf()' - Set a formatted string value. | |
1150 | */ | |
1151 | ||
1152 | void | |
1153 | cupsdSetStringf(char **s, /* O - New string */ | |
1154 | const char *f, /* I - Printf-style format string */ | |
1155 | ...) /* I - Additional args as needed */ | |
1156 | { | |
1157 | char v[4096]; /* Formatting string value */ | |
1158 | va_list ap; /* Argument pointer */ | |
1159 | char *olds; /* Old string */ | |
1160 | ||
1161 | ||
1162 | if (!s) | |
1163 | return; | |
1164 | ||
1165 | olds = *s; | |
1166 | ||
1167 | if (f) | |
1168 | { | |
1169 | va_start(ap, f); | |
1170 | vsnprintf(v, sizeof(v), f, ap); | |
1171 | va_end(ap); | |
1172 | ||
e53920b9 | 1173 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1174 | } |
1175 | else | |
1176 | *s = NULL; | |
1177 | ||
1178 | if (olds) | |
e53920b9 | 1179 | _cupsStrFree(olds); |
ef416fc2 | 1180 | } |
1181 | ||
1182 | ||
a4d04587 | 1183 | #ifdef HAVE_LAUNCHD |
1184 | /* | |
1185 | * 'launchd_checkin()' - Check-in with launchd and collect the listening fds. | |
1186 | */ | |
1187 | ||
1188 | static void | |
1189 | launchd_checkin(void) | |
1190 | { | |
1191 | int i, /* Looping var */ | |
bd7854cb | 1192 | count, /* Numebr of listeners */ |
a4d04587 | 1193 | portnum; /* Port number */ |
1194 | launch_data_t ld_msg, /* Launch data message */ | |
1195 | ld_resp, /* Launch data response */ | |
1196 | ld_array, /* Launch data array */ | |
1197 | ld_sockets, /* Launch data sockets dictionary */ | |
a4d04587 | 1198 | tmp; /* Launch data */ |
1199 | cupsd_listener_t *lis; /* Listeners array */ | |
1200 | http_addr_t addr; /* Address variable */ | |
1201 | socklen_t addrlen; /* Length of address */ | |
f7deaa1a | 1202 | int fd; /* File descriptor */ |
1203 | char s[256]; /* String addresss */ | |
a4d04587 | 1204 | |
1205 | ||
1206 | cupsdLogMessage(CUPSD_LOG_DEBUG, "launchd_checkin: pid=%d", (int)getpid()); | |
1207 | ||
1208 | /* | |
1209 | * Check-in with launchd... | |
1210 | */ | |
1211 | ||
1212 | ld_msg = launch_data_new_string(LAUNCH_KEY_CHECKIN); | |
1213 | if ((ld_resp = launch_msg(ld_msg)) == NULL) | |
1214 | { | |
bd7854cb | 1215 | cupsdLogMessage(CUPSD_LOG_ERROR, |
a4d04587 | 1216 | "launchd_checkin: launch_msg(\"" LAUNCH_KEY_CHECKIN |
1217 | "\") IPC failure"); | |
1218 | exit(EXIT_FAILURE); | |
1219 | } | |
bd7854cb | 1220 | |
a4d04587 | 1221 | if (launch_data_get_type(ld_resp) == LAUNCH_DATA_ERRNO) |
1222 | { | |
1223 | errno = launch_data_get_errno(ld_resp); | |
1224 | cupsdLogMessage(CUPSD_LOG_ERROR, "launchd_checkin: Check-in failed: %s", | |
1225 | strerror(errno)); | |
1226 | exit(EXIT_FAILURE); | |
1227 | } | |
1228 | ||
a4d04587 | 1229 | /* |
1230 | * Get the sockets dictionary... | |
1231 | */ | |
1232 | ||
1233 | if (!(ld_sockets = launch_data_dict_lookup(ld_resp, LAUNCH_JOBKEY_SOCKETS))) | |
1234 | { | |
1235 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1236 | "launchd_checkin: No sockets found to answer requests on!"); | |
1237 | exit(EXIT_FAILURE); | |
1238 | } | |
bd7854cb | 1239 | |
a4d04587 | 1240 | /* |
1241 | * Get the array of listener sockets... | |
1242 | */ | |
1243 | ||
1244 | if (!(ld_array = launch_data_dict_lookup(ld_sockets, "Listeners"))) | |
1245 | { | |
1246 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1247 | "launchd_checkin: No sockets found to answer requests on!"); | |
1248 | exit(EXIT_FAILURE); | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * Add listening fd(s) to the Listener array... | |
1253 | */ | |
1254 | ||
1255 | if (launch_data_get_type(ld_array) == LAUNCH_DATA_ARRAY) | |
1256 | { | |
f7deaa1a | 1257 | count = launch_data_array_get_count(ld_array); |
bd7854cb | 1258 | |
1259 | for (i = 0; i < count; i ++) | |
a4d04587 | 1260 | { |
1261 | /* | |
f7deaa1a | 1262 | * Get the launchd file descriptor and address... |
a4d04587 | 1263 | */ |
bd7854cb | 1264 | |
f7deaa1a | 1265 | tmp = launch_data_array_get_index(ld_array, i); |
1266 | fd = launch_data_get_fd(tmp); | |
1267 | addrlen = sizeof(addr); | |
1268 | ||
1269 | if (getsockname(fd, (struct sockaddr *)&addr, &addrlen)) | |
bd7854cb | 1270 | { |
1271 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
f7deaa1a | 1272 | "launchd_checkin: Unable to get local address - %s", |
1273 | strerror(errno)); | |
1274 | continue; | |
bd7854cb | 1275 | } |
1276 | ||
f7deaa1a | 1277 | /* |
1278 | * Try to match the launchd socket address to one of the listeners... | |
1279 | */ | |
bd7854cb | 1280 | |
f7deaa1a | 1281 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
1282 | lis; | |
1283 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
1284 | if (httpAddrEqual(&lis->address, &addr)) | |
1285 | break; | |
1286 | ||
1287 | /* | |
1288 | * Add a new listener If there's no match... | |
1289 | */ | |
a4d04587 | 1290 | |
f7deaa1a | 1291 | if (lis) |
a4d04587 | 1292 | { |
f7deaa1a | 1293 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
1294 | "launchd_checkin: Matched existing listener %s with fd %d...", | |
1295 | httpAddrString(&(lis->address), s, sizeof(s)), fd); | |
1296 | } | |
1297 | else | |
1298 | { | |
1299 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1300 | "launchd_checkin: Adding new listener %s with fd %d...", | |
1301 | httpAddrString(&addr, s, sizeof(s)), fd); | |
1302 | ||
1303 | if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL) | |
1304 | { | |
1305 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1306 | "launchd_checkin: Unable to allocate listener - %s.", | |
1307 | strerror(errno)); | |
1308 | exit(EXIT_FAILURE); | |
1309 | } | |
1310 | ||
1311 | cupsArrayAdd(Listeners, lis); | |
1312 | ||
1313 | memcpy(&lis->address, &addr, sizeof(lis->address)); | |
a4d04587 | 1314 | } |
bd7854cb | 1315 | |
f7deaa1a | 1316 | lis->fd = fd; |
1317 | ||
a4d04587 | 1318 | # ifdef HAVE_SSL |
1319 | portnum = 0; | |
bd7854cb | 1320 | |
a4d04587 | 1321 | # ifdef AF_INET6 |
f7deaa1a | 1322 | if (lis->address.addr.sa_family == AF_INET6) |
1323 | portnum = ntohs(lis->address.ipv6.sin6_port); | |
a4d04587 | 1324 | else |
1325 | # endif /* AF_INET6 */ | |
f7deaa1a | 1326 | if (lis->address.addr.sa_family == AF_INET) |
1327 | portnum = ntohs(lis->address.ipv4.sin_port); | |
a4d04587 | 1328 | |
1329 | if (portnum == 443) | |
1330 | lis->encryption = HTTP_ENCRYPT_ALWAYS; | |
1331 | # endif /* HAVE_SSL */ | |
1332 | } | |
1333 | } | |
1334 | ||
a4d04587 | 1335 | launch_data_free(ld_msg); |
1336 | launch_data_free(ld_resp); | |
1337 | } | |
1338 | ||
1339 | ||
f7deaa1a | 1340 | /* |
1341 | * 'launchd_checkout()' - Update the launchd KeepAlive file as needed. | |
1342 | */ | |
1343 | ||
1344 | static void | |
1345 | launchd_checkout(void) | |
1346 | { | |
1347 | int fd; /* File descriptor */ | |
1348 | ||
1349 | ||
1350 | /* | |
1351 | * Create or remove the launchd KeepAlive file based on whether | |
1352 | * there are active jobs, polling, browsing for remote printers or | |
1353 | * shared printers to advertise... | |
1354 | */ | |
1355 | ||
1356 | if ((cupsArrayCount(ActiveJobs) || NumPolled || | |
1357 | (Browsing && | |
1358 | (BrowseRemoteProtocols || | |
1359 | (BrowseLocalProtocols && NumBrowsers && cupsArrayCount(Printers)))))) | |
1360 | { | |
1361 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1362 | "Creating launchd keepalive file \"" CUPS_KEEPALIVE "\"..."); | |
1363 | ||
1364 | if ((fd = open(CUPS_KEEPALIVE, O_RDONLY | O_CREAT | O_EXCL, S_IRUSR)) >= 0) | |
1365 | close(fd); | |
1366 | } | |
1367 | else | |
1368 | { | |
1369 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1370 | "Removing launchd keepalive file \"" CUPS_KEEPALIVE "\"..."); | |
1371 | ||
1372 | unlink(CUPS_KEEPALIVE); | |
1373 | } | |
1374 | } | |
a4d04587 | 1375 | #endif /* HAVE_LAUNCHD */ |
1376 | ||
1377 | ||
ef416fc2 | 1378 | /* |
1379 | * 'parent_handler()' - Catch USR1/CHLD signals... | |
1380 | */ | |
1381 | ||
1382 | static void | |
1383 | parent_handler(int sig) /* I - Signal */ | |
1384 | { | |
1385 | /* | |
1386 | * Store the signal we got from the OS and return... | |
1387 | */ | |
1388 | ||
1389 | parent_signal = sig; | |
1390 | } | |
1391 | ||
1392 | ||
1393 | /* | |
1394 | * 'process_children()' - Process all dead children... | |
1395 | */ | |
1396 | ||
1397 | static void | |
1398 | process_children(void) | |
1399 | { | |
1400 | int status; /* Exit status of child */ | |
1401 | int pid; /* Process ID of child */ | |
1402 | cupsd_job_t *job; /* Current job */ | |
1403 | int i; /* Looping var */ | |
e00b005a | 1404 | char name[1024]; /* Process name */ |
ef416fc2 | 1405 | |
1406 | ||
1407 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "process_children()"); | |
1408 | ||
1409 | /* | |
1410 | * Reset the dead_children flag... | |
1411 | */ | |
1412 | ||
1413 | dead_children = 0; | |
1414 | ||
1415 | /* | |
1416 | * Collect the exit status of some children... | |
1417 | */ | |
1418 | ||
1419 | #ifdef HAVE_WAITPID | |
1420 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) | |
1421 | #elif defined(HAVE_WAIT3) | |
1422 | while ((pid = wait3(&status, WNOHANG, NULL)) > 0) | |
1423 | #else | |
1424 | if ((pid = wait(&status)) > 0) | |
1425 | #endif /* HAVE_WAITPID */ | |
1426 | { | |
ef416fc2 | 1427 | /* |
d09495fa | 1428 | * Ignore SIGTERM errors - that comes when a job is canceled... |
ef416fc2 | 1429 | */ |
1430 | ||
e00b005a | 1431 | cupsdFinishProcess(pid, name, sizeof(name)); |
1432 | ||
ef416fc2 | 1433 | if (status == SIGTERM) |
1434 | status = 0; | |
1435 | ||
1436 | if (status) | |
1437 | { | |
1438 | if (WIFEXITED(status)) | |
e00b005a | 1439 | cupsdLogMessage(CUPSD_LOG_ERROR, "PID %d (%s) stopped with status %d!", |
1440 | pid, name, WEXITSTATUS(status)); | |
ef416fc2 | 1441 | else |
e00b005a | 1442 | cupsdLogMessage(CUPSD_LOG_ERROR, "PID %d (%s) crashed on signal %d!", |
1443 | pid, name, WTERMSIG(status)); | |
ef416fc2 | 1444 | |
1445 | if (LogLevel < CUPSD_LOG_DEBUG) | |
1446 | cupsdLogMessage(CUPSD_LOG_INFO, | |
bd7854cb | 1447 | "Hint: Try setting the LogLevel to \"debug\" to find " |
1448 | "out more."); | |
ef416fc2 | 1449 | } |
1450 | else | |
e00b005a | 1451 | cupsdLogMessage(CUPSD_LOG_DEBUG, "PID %d (%s) exited with no errors.", |
1452 | pid, name); | |
ef416fc2 | 1453 | |
1454 | /* | |
1455 | * Delete certificates for CGI processes... | |
1456 | */ | |
1457 | ||
1458 | if (pid) | |
1459 | cupsdDeleteCert(pid); | |
1460 | ||
1461 | /* | |
1462 | * Lookup the PID in the jobs list... | |
1463 | */ | |
1464 | ||
1465 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
1466 | job; | |
1467 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 1468 | if (job->state_value == IPP_JOB_PROCESSING) |
ef416fc2 | 1469 | { |
1470 | for (i = 0; job->filters[i]; i ++) | |
1471 | if (job->filters[i] == pid) | |
1472 | break; | |
1473 | ||
1474 | if (job->filters[i] || job->backend == pid) | |
1475 | { | |
1476 | /* | |
1477 | * OK, this process has gone away; what's left? | |
1478 | */ | |
1479 | ||
1480 | if (job->filters[i]) | |
1481 | job->filters[i] = -pid; | |
1482 | else | |
1483 | job->backend = -pid; | |
1484 | ||
1485 | if (status && job->status >= 0) | |
1486 | { | |
1487 | /* | |
1488 | * An error occurred; save the exit status so we know to stop | |
1489 | * the printer or cancel the job when all of the filters finish... | |
1490 | * | |
1491 | * A negative status indicates that the backend failed and the | |
1492 | * printer needs to be stopped. | |
1493 | */ | |
1494 | ||
1495 | if (job->filters[i]) | |
1496 | job->status = status; /* Filter failed */ | |
1497 | else | |
1498 | job->status = -status; /* Backend failed */ | |
e00b005a | 1499 | |
1500 | if (job->printer && !(job->printer->type & CUPS_PRINTER_FAX)) | |
1501 | { | |
1502 | snprintf(job->printer->state_message, | |
1503 | sizeof(job->printer->state_message), "%s failed", name); | |
1504 | cupsdAddPrinterHistory(job->printer); | |
1505 | } | |
ef416fc2 | 1506 | } |
1507 | ||
1508 | /* | |
1509 | * If this is not the last file in a job, see if all of the | |
1510 | * filters are done, and if so move to the next file. | |
1511 | */ | |
1512 | ||
1513 | if (job->current_file < job->num_files) | |
1514 | { | |
1515 | for (i = 0; job->filters[i] < 0; i ++); | |
1516 | ||
1517 | if (!job->filters[i]) | |
1518 | { | |
1519 | /* | |
1520 | * Process the next file... | |
1521 | */ | |
1522 | ||
1523 | cupsdFinishJob(job); | |
1524 | } | |
1525 | } | |
1526 | break; | |
1527 | } | |
1528 | } | |
1529 | } | |
1530 | } | |
1531 | ||
1532 | ||
1533 | /* | |
1534 | * 'sigchld_handler()' - Handle 'child' signals from old processes. | |
1535 | */ | |
1536 | ||
1537 | static void | |
1538 | sigchld_handler(int sig) /* I - Signal number */ | |
1539 | { | |
1540 | (void)sig; | |
1541 | ||
1542 | /* | |
1543 | * Flag that we have dead children... | |
1544 | */ | |
1545 | ||
1546 | dead_children = 1; | |
1547 | ||
1548 | /* | |
1549 | * Reset the signal handler as needed... | |
1550 | */ | |
1551 | ||
1552 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1553 | signal(SIGCLD, sigchld_handler); | |
1554 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1555 | } | |
1556 | ||
1557 | ||
1558 | /* | |
1559 | * 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler. | |
1560 | */ | |
1561 | ||
1562 | static void | |
1563 | sighup_handler(int sig) /* I - Signal number */ | |
1564 | { | |
1565 | (void)sig; | |
1566 | ||
1567 | NeedReload = RELOAD_ALL; | |
1568 | ReloadTime = time(NULL); | |
1569 | ||
1570 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1571 | signal(SIGHUP, sighup_handler); | |
1572 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1573 | } | |
1574 | ||
1575 | ||
1576 | /* | |
1577 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler. | |
1578 | */ | |
1579 | ||
1580 | static void | |
1581 | sigterm_handler(int sig) /* I - Signal */ | |
1582 | { | |
1583 | (void)sig; /* remove compiler warnings... */ | |
1584 | ||
1585 | /* | |
1586 | * Flag that we should stop and return... | |
1587 | */ | |
1588 | ||
1589 | stop_scheduler = 1; | |
1590 | } | |
1591 | ||
1592 | ||
1593 | /* | |
1594 | * 'select_timeout()' - Calculate the select timeout value. | |
1595 | * | |
1596 | */ | |
1597 | ||
1598 | static long /* O - Number of seconds */ | |
bd7854cb | 1599 | select_timeout(int fds) /* I - Number of descriptors returned */ |
ef416fc2 | 1600 | { |
ef416fc2 | 1601 | long timeout; /* Timeout for select */ |
1602 | time_t now; /* Current time */ | |
1603 | cupsd_client_t *con; /* Client information */ | |
1604 | cupsd_printer_t *p; /* Printer information */ | |
1605 | cupsd_job_t *job; /* Job information */ | |
1606 | cupsd_subscription_t *sub; /* Subscription information */ | |
1607 | const char *why; /* Debugging aid */ | |
1608 | ||
1609 | ||
1610 | /* | |
1611 | * Check to see if any of the clients have pending data to be | |
1612 | * processed; if so, the timeout should be 0... | |
1613 | */ | |
1614 | ||
bd7854cb | 1615 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1616 | con; | |
1617 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1618 | if (con->http.used > 0) |
1619 | return (0); | |
1620 | ||
1621 | /* | |
f7deaa1a | 1622 | * If select has been active in the last second (fds > 0) or we have |
ef416fc2 | 1623 | * many resources in use then don't bother trying to optimize the |
1624 | * timeout, just make it 1 second. | |
1625 | */ | |
1626 | ||
f7deaa1a | 1627 | if (fds > 0 || cupsArrayCount(Clients) > 50) |
ef416fc2 | 1628 | return (1); |
1629 | ||
1630 | /* | |
1631 | * Otherwise, check all of the possible events that we need to wake for... | |
1632 | */ | |
1633 | ||
1634 | now = time(NULL); | |
1635 | timeout = now + 86400; /* 86400 == 1 day */ | |
1636 | why = "do nothing"; | |
1637 | ||
1638 | /* | |
1639 | * Check the activity and close old clients... | |
1640 | */ | |
1641 | ||
bd7854cb | 1642 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1643 | con; | |
1644 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1645 | if ((con->http.activity + Timeout) < timeout) |
1646 | { | |
1647 | timeout = con->http.activity + Timeout; | |
1648 | why = "timeout a client connection"; | |
1649 | } | |
1650 | ||
1651 | /* | |
1652 | * Update the browse list as needed... | |
1653 | */ | |
1654 | ||
1655 | if (Browsing && BrowseLocalProtocols) | |
1656 | { | |
1657 | #ifdef HAVE_LIBSLP | |
1658 | if ((BrowseLocalProtocols & BROWSE_SLP) && (BrowseSLPRefresh < timeout)) | |
1659 | { | |
1660 | timeout = BrowseSLPRefresh; | |
1661 | why = "update SLP browsing"; | |
1662 | } | |
1663 | #endif /* HAVE_LIBSLP */ | |
1664 | ||
b423cd4c | 1665 | #ifdef HAVE_LDAP |
1666 | if ((BrowseLocalProtocols & BROWSE_LDAP) && (BrowseLDAPRefresh < timeout)) | |
1667 | { | |
1668 | timeout = BrowseLDAPRefresh; | |
1669 | why = "update LDAP browsing"; | |
1670 | } | |
1671 | #endif /* HAVE_LDAP */ | |
1672 | ||
f7deaa1a | 1673 | if ((BrowseLocalProtocols & BROWSE_CUPS) && NumBrowsers) |
ef416fc2 | 1674 | { |
1675 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
1676 | p; | |
1677 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
1678 | { | |
1679 | if (p->type & CUPS_PRINTER_REMOTE) | |
1680 | { | |
1681 | if ((p->browse_time + BrowseTimeout) < timeout) | |
1682 | { | |
1683 | timeout = p->browse_time + BrowseTimeout; | |
1684 | why = "browse timeout a printer"; | |
1685 | } | |
1686 | } | |
f7deaa1a | 1687 | else if (p->shared && !(p->type & CUPS_PRINTER_IMPLICIT)) |
ef416fc2 | 1688 | { |
1689 | if (BrowseInterval && (p->browse_time + BrowseInterval) < timeout) | |
1690 | { | |
1691 | timeout = p->browse_time + BrowseInterval; | |
1692 | why = "send browse update"; | |
1693 | } | |
1694 | } | |
1695 | } | |
1696 | } | |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | * Check for any active jobs... | |
1701 | */ | |
1702 | ||
1703 | if (timeout > (now + 10) && ActiveJobs) | |
1704 | { | |
1705 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
1706 | job; | |
1707 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 1708 | if (job->state_value <= IPP_JOB_PROCESSING) |
ef416fc2 | 1709 | { |
1710 | timeout = now + 10; | |
1711 | why = "process active jobs"; | |
1712 | break; | |
1713 | } | |
1714 | } | |
1715 | ||
1716 | #ifdef HAVE_MALLINFO | |
1717 | /* | |
1718 | * Log memory usage every minute... | |
1719 | */ | |
1720 | ||
1721 | if (LogLevel >= CUPSD_LOG_DEBUG && (mallinfo_time + 60) < timeout) | |
1722 | { | |
1723 | timeout = mallinfo_time + 60; | |
1724 | why = "display memory usage"; | |
1725 | } | |
1726 | #endif /* HAVE_MALLINFO */ | |
1727 | ||
ef416fc2 | 1728 | /* |
1729 | * Expire subscriptions as needed... | |
1730 | */ | |
1731 | ||
1732 | for (sub = (cupsd_subscription_t *)cupsArrayFirst(Subscriptions); | |
1733 | sub; | |
1734 | sub = (cupsd_subscription_t *)cupsArrayNext(Subscriptions)) | |
bd7854cb | 1735 | if (!sub->job && sub->expire && sub->expire < timeout) |
ef416fc2 | 1736 | { |
1737 | timeout = sub->expire; | |
1738 | why = "expire subscription"; | |
1739 | } | |
1740 | ||
1741 | /* | |
1742 | * Adjust from absolute to relative time. If p->browse_time above | |
1743 | * was 0 then we can end up with a negative value here, so check. | |
1744 | * We add 1 second to the timeout since events occur after the | |
1745 | * timeout expires, and limit the timeout to 86400 seconds (1 day) | |
1746 | * to avoid select() timeout limits present on some operating | |
1747 | * systems... | |
1748 | */ | |
1749 | ||
1750 | timeout = timeout - now + 1; | |
1751 | ||
1752 | if (timeout < 1) | |
1753 | timeout = 1; | |
1754 | else if (timeout > 86400) | |
1755 | timeout = 86400; | |
1756 | ||
1757 | /* | |
1758 | * Log and return the timeout value... | |
1759 | */ | |
1760 | ||
f7deaa1a | 1761 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout(%d): %ld seconds to %s", |
1762 | fds, timeout, why); | |
ef416fc2 | 1763 | |
1764 | return (timeout); | |
1765 | } | |
1766 | ||
1767 | ||
1768 | /* | |
1769 | * 'usage()' - Show scheduler usage. | |
1770 | */ | |
1771 | ||
1772 | static void | |
a4d04587 | 1773 | usage(int status) /* O - Exit status */ |
ef416fc2 | 1774 | { |
a4d04587 | 1775 | _cupsLangPuts(status ? stderr : stdout, |
1776 | _("Usage: cupsd [-c config-file] [-f] [-F] [-h] [-l]\n" | |
1777 | "\n" | |
1778 | "-c config-file Load alternate configuration file\n" | |
1779 | "-f Run in the foreground\n" | |
1780 | "-F Run in the foreground but detach\n" | |
1781 | "-h Show this usage message\n" | |
1782 | "-l Run cupsd from launchd(8)\n")); | |
1783 | exit(status); | |
ef416fc2 | 1784 | } |
1785 | ||
1786 | ||
1787 | /* | |
09a101d6 | 1788 | * End of "$Id: main.c 6564 2007-06-18 23:40:38Z mike $". |
ef416fc2 | 1789 | */ |