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ef416fc2 | 1 | /* |
2e4ff8af | 2 | * "$Id: main.c 6914 2007-09-05 21:05:04Z mike $" |
ef416fc2 | 3 | * |
4 | * Scheduler main loop for the Common UNIX Printing System (CUPS). | |
5 | * | |
91c84a35 | 6 | * Copyright 2007-2008 by Apple Inc. |
f7deaa1a | 7 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
ef416fc2 | 12 | * "LICENSE" which should have been included with this file. If this |
bc44d920 | 13 | * file is missing or damaged, see the license at "http://www.cups.org/". |
ef416fc2 | 14 | * |
15 | * Contents: | |
16 | * | |
17 | * main() - Main entry for the CUPS scheduler. | |
18 | * cupsdClosePipe() - Close a pipe as necessary. | |
19 | * cupsdOpenPipe() - Create a pipe which is closed on exec. | |
ef416fc2 | 20 | * cupsdHoldSignals() - Hold child and termination signals. |
ef416fc2 | 21 | * cupsdReleaseSignals() - Release signals for delivery. |
22 | * cupsdSetString() - Set a string value. | |
23 | * cupsdSetStringf() - Set a formatted string value. | |
a4d04587 | 24 | * launchd_checkin() - Check-in with launchd and collect the |
25 | * listening fds. | |
f7deaa1a | 26 | * launchd_checkout() - Check-out with launchd. |
ef416fc2 | 27 | * parent_handler() - Catch USR1/CHLD signals... |
28 | * process_children() - Process all dead children... | |
29 | * sigchld_handler() - Handle 'child' signals from old processes. | |
30 | * sighup_handler() - Handle 'hangup' signals to reconfigure the | |
31 | * scheduler. | |
32 | * sigterm_handler() - Handle 'terminate' signals that stop the | |
33 | * scheduler. | |
34 | * select_timeout() - Calculate the select timeout value. | |
35 | * usage() - Show scheduler usage. | |
36 | */ | |
37 | ||
38 | /* | |
39 | * Include necessary headers... | |
40 | */ | |
41 | ||
42 | #define _MAIN_C_ | |
43 | #include "cupsd.h" | |
44 | #include <sys/resource.h> | |
45 | #include <syslog.h> | |
46 | #include <grp.h> | |
cc0d019f | 47 | #include <cups/dir.h> |
ef416fc2 | 48 | |
a4d04587 | 49 | #ifdef HAVE_LAUNCH_H |
50 | # include <launch.h> | |
51 | # include <libgen.h> | |
7594b224 | 52 | # define CUPS_KEEPALIVE CUPS_CACHEDIR "/org.cups.cupsd" |
f7deaa1a | 53 | /* Name of the launchd KeepAlive file */ |
54 | # ifndef LAUNCH_JOBKEY_KEEPALIVE | |
55 | # define LAUNCH_JOBKEY_KEEPALIVE "KeepAlive" | |
56 | # endif /* !LAUNCH_JOBKEY_KEEPALIVE */ | |
57 | # ifndef LAUNCH_JOBKEY_PATHSTATE | |
58 | # define LAUNCH_JOBKEY_PATHSTATE "PathState" | |
59 | # endif /* !LAUNCH_JOBKEY_PATHSTATE */ | |
60 | # ifndef LAUNCH_JOBKEY_SERVICEIPC | |
61 | # define LAUNCH_JOBKEY_SERVICEIPC "ServiceIPC" | |
62 | # endif /* !LAUNCH_JOBKEY_SERVICEIPC */ | |
a4d04587 | 63 | #endif /* HAVE_LAUNCH_H */ |
64 | ||
ef416fc2 | 65 | #if defined(HAVE_MALLOC_H) && defined(HAVE_MALLINFO) |
66 | # include <malloc.h> | |
67 | #endif /* HAVE_MALLOC_H && HAVE_MALLINFO */ | |
fa73b229 | 68 | #ifdef HAVE_NOTIFY_H |
69 | # include <notify.h> | |
70 | #endif /* HAVE_NOTIFY_H */ | |
ef416fc2 | 71 | |
7594b224 | 72 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
73 | # include <dlfcn.h> | |
74 | #endif /* __APPLE__ && HAVE_DLFCN_H */ | |
75 | ||
ef416fc2 | 76 | |
77 | /* | |
78 | * Local functions... | |
79 | */ | |
80 | ||
a4d04587 | 81 | #ifdef HAVE_LAUNCHD |
411affcf | 82 | static void launchd_checkin(void); |
f7deaa1a | 83 | static void launchd_checkout(void); |
a4d04587 | 84 | #endif /* HAVE_LAUNCHD */ |
411affcf | 85 | static void parent_handler(int sig); |
86 | static void process_children(void); | |
87 | static void sigchld_handler(int sig); | |
88 | static void sighup_handler(int sig); | |
89 | static void sigterm_handler(int sig); | |
90 | static long select_timeout(int fds); | |
91 | static void usage(int status); | |
ef416fc2 | 92 | |
93 | ||
94 | /* | |
95 | * Local globals... | |
96 | */ | |
97 | ||
411affcf | 98 | static int parent_signal = 0; |
99 | /* Set to signal number from child */ | |
100 | static int holdcount = 0; /* Number of times "hold" was called */ | |
ef416fc2 | 101 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
411affcf | 102 | static sigset_t holdmask; /* Old POSIX signal mask */ |
ef416fc2 | 103 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ |
411affcf | 104 | static int dead_children = 0; |
105 | /* Dead children? */ | |
106 | static int stop_scheduler = 0; | |
107 | /* Should the scheduler stop? */ | |
108 | ||
7594b224 | 109 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
110 | static const char *PSQLibPath = "/usr/lib/libPrintServiceQuota.dylib"; | |
111 | static const char *PSQLibFuncName = "PSQUpdateQuota"; | |
112 | static void *PSQLibRef; /* libPrintServiceQuota.dylib */ | |
113 | #endif /* HAVE_DLFCN_H */ | |
114 | ||
ef416fc2 | 115 | |
116 | /* | |
117 | * 'main()' - Main entry for the CUPS scheduler. | |
118 | */ | |
119 | ||
120 | int /* O - Exit status */ | |
bd7854cb | 121 | main(int argc, /* I - Number of command-line args */ |
ef416fc2 | 122 | char *argv[]) /* I - Command-line arguments */ |
123 | { | |
124 | int i; /* Looping var */ | |
125 | char *opt; /* Option character */ | |
126 | int fg; /* Run in the foreground */ | |
bd7854cb | 127 | int fds; /* Number of ready descriptors */ |
ef416fc2 | 128 | cupsd_client_t *con; /* Current client */ |
129 | cupsd_job_t *job; /* Current job */ | |
130 | cupsd_listener_t *lis; /* Current listener */ | |
131 | time_t current_time, /* Current time */ | |
a4d04587 | 132 | activity, /* Client activity timer */ |
ef416fc2 | 133 | browse_time, /* Next browse send time */ |
134 | senddoc_time, /* Send-Document time */ | |
411affcf | 135 | expire_time, /* Subscription expire time */ |
5bd77a73 | 136 | report_time; /* Malloc/client/job report time */ |
f7deaa1a | 137 | long timeout; /* Timeout for cupsdDoSelect() */ |
ef416fc2 | 138 | struct rlimit limit; /* Runtime limit */ |
139 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
140 | struct sigaction action; /* Actions for POSIX signals */ | |
141 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
142 | #ifdef __sgi | |
143 | cups_file_t *fp; /* Fake lpsched lock file */ | |
144 | struct stat statbuf; /* Needed for checking lpsched FIFO */ | |
145 | #endif /* __sgi */ | |
a41f09e2 MS |
146 | #ifdef __APPLE__ |
147 | int run_as_child = 0; | |
148 | /* Needed for Mac OS X fork/exec */ | |
a4924f6c MS |
149 | #else |
150 | time_t netif_time = 0; /* Time since last network update */ | |
a41f09e2 | 151 | #endif /* __APPLE__ */ |
a4d04587 | 152 | #if HAVE_LAUNCHD |
4400e98d | 153 | int launchd_idle_exit; |
a4d04587 | 154 | /* Idle exit on select timeout? */ |
155 | #endif /* HAVE_LAUNCHD */ | |
ef416fc2 | 156 | |
157 | ||
db1f069b MS |
158 | #ifdef HAVE_GETEUID |
159 | /* | |
160 | * Check for setuid invocation, which we do not support! | |
161 | */ | |
162 | ||
163 | if (getuid() != geteuid()) | |
164 | { | |
165 | fputs("cupsd: Cannot run as a setuid program!\n", stderr); | |
166 | return (1); | |
167 | } | |
168 | #endif /* HAVE_GETEUID */ | |
169 | ||
ef416fc2 | 170 | /* |
171 | * Check for command-line arguments... | |
172 | */ | |
173 | ||
4400e98d | 174 | fg = 0; |
ef416fc2 | 175 | |
09a101d6 | 176 | #ifdef HAVE_LAUNCHD |
177 | if (getenv("CUPSD_LAUNCHD")) | |
178 | { | |
179 | Launchd = 1; | |
180 | fg = 1; | |
181 | } | |
182 | #endif /* HAVE_LAUNCHD */ | |
183 | ||
ef416fc2 | 184 | for (i = 1; i < argc; i ++) |
185 | if (argv[i][0] == '-') | |
186 | for (opt = argv[i] + 1; *opt != '\0'; opt ++) | |
187 | switch (*opt) | |
188 | { | |
a41f09e2 MS |
189 | #ifdef __APPLE__ |
190 | case 'C' : /* Run as child with config file */ | |
191 | run_as_child = 1; | |
192 | fg = -1; | |
193 | #endif /* __APPLE__ */ | |
194 | ||
ef416fc2 | 195 | case 'c' : /* Configuration file */ |
196 | i ++; | |
197 | if (i >= argc) | |
a4d04587 | 198 | { |
199 | _cupsLangPuts(stderr, _("cupsd: Expected config filename " | |
200 | "after \"-c\" option!\n")); | |
201 | usage(1); | |
202 | } | |
ef416fc2 | 203 | |
204 | if (argv[i][0] == '/') | |
205 | { | |
206 | /* | |
207 | * Absolute directory... | |
208 | */ | |
209 | ||
210 | cupsdSetString(&ConfigurationFile, argv[i]); | |
211 | } | |
212 | else | |
213 | { | |
214 | /* | |
215 | * Relative directory... | |
216 | */ | |
217 | ||
09ec0018 | 218 | char *current; /* Current directory */ |
ef416fc2 | 219 | |
220 | ||
09ec0018 | 221 | /* |
222 | * Allocate a buffer for the current working directory to | |
223 | * reduce run-time stack usage; this approximates the | |
224 | * behavior of some implementations of getcwd() when they | |
225 | * are passed a NULL pointer. | |
226 | */ | |
227 | ||
91c84a35 MS |
228 | if ((current = malloc(1024)) == NULL) |
229 | { | |
230 | _cupsLangPuts(stderr, | |
231 | _("cupsd: Unable to get current directory!\n")); | |
232 | return (1); | |
233 | } | |
234 | ||
235 | if (!getcwd(current, 1024)) | |
236 | { | |
237 | _cupsLangPuts(stderr, | |
238 | _("cupsd: Unable to get current directory!\n")); | |
239 | free(current); | |
240 | return (1); | |
241 | } | |
09ec0018 | 242 | |
ef416fc2 | 243 | cupsdSetStringf(&ConfigurationFile, "%s/%s", current, argv[i]); |
09ec0018 | 244 | free(current); |
ef416fc2 | 245 | } |
246 | break; | |
247 | ||
248 | case 'f' : /* Run in foreground... */ | |
249 | fg = 1; | |
250 | break; | |
251 | ||
bd7854cb | 252 | case 'F' : /* Run in foreground, but disconnect from terminal... */ |
ef416fc2 | 253 | fg = -1; |
254 | break; | |
255 | ||
a4d04587 | 256 | case 'h' : /* Show usage/help */ |
257 | usage(0); | |
258 | break; | |
259 | ||
260 | case 'l' : /* Started by launchd... */ | |
261 | #ifdef HAVE_LAUNCHD | |
4400e98d | 262 | Launchd = 1; |
a4d04587 | 263 | fg = 1; |
264 | #else | |
265 | _cupsLangPuts(stderr, _("cupsd: launchd(8) support not compiled " | |
266 | "in, running in normal mode.\n")); | |
267 | fg = 0; | |
268 | #endif /* HAVE_LAUNCHD */ | |
269 | break; | |
270 | ||
a74454a7 | 271 | case 'p' : /* Stop immediately for profiling */ |
272 | puts("Warning: -p option is for internal testing use only!"); | |
273 | stop_scheduler = 1; | |
274 | fg = 1; | |
275 | break; | |
276 | ||
2e4ff8af MS |
277 | case 't' : /* Test the cupsd.conf file... */ |
278 | TestConfigFile = 1; | |
279 | fg = 1; | |
280 | break; | |
281 | ||
ef416fc2 | 282 | default : /* Unknown option */ |
a4d04587 | 283 | _cupsLangPrintf(stderr, _("cupsd: Unknown option \"%c\" - " |
284 | "aborting!\n"), *opt); | |
285 | usage(1); | |
ef416fc2 | 286 | break; |
287 | } | |
288 | else | |
289 | { | |
a4d04587 | 290 | _cupsLangPrintf(stderr, _("cupsd: Unknown argument \"%s\" - aborting!\n"), |
291 | argv[i]); | |
292 | usage(1); | |
ef416fc2 | 293 | } |
294 | ||
295 | if (!ConfigurationFile) | |
296 | cupsdSetString(&ConfigurationFile, CUPS_SERVERROOT "/cupsd.conf"); | |
297 | ||
298 | /* | |
299 | * If the user hasn't specified "-f", run in the background... | |
300 | */ | |
301 | ||
302 | if (!fg) | |
303 | { | |
304 | /* | |
305 | * Setup signal handlers for the parent... | |
306 | */ | |
307 | ||
308 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
309 | sigset(SIGUSR1, parent_handler); | |
310 | sigset(SIGCHLD, parent_handler); | |
311 | ||
312 | sigset(SIGHUP, SIG_IGN); | |
313 | #elif defined(HAVE_SIGACTION) | |
314 | memset(&action, 0, sizeof(action)); | |
315 | sigemptyset(&action.sa_mask); | |
316 | sigaddset(&action.sa_mask, SIGUSR1); | |
317 | action.sa_handler = parent_handler; | |
318 | sigaction(SIGUSR1, &action, NULL); | |
319 | sigaction(SIGCHLD, &action, NULL); | |
320 | ||
321 | sigemptyset(&action.sa_mask); | |
322 | action.sa_handler = SIG_IGN; | |
323 | sigaction(SIGHUP, &action, NULL); | |
324 | #else | |
325 | signal(SIGUSR1, parent_handler); | |
326 | signal(SIGCLD, parent_handler); | |
327 | ||
328 | signal(SIGHUP, SIG_IGN); | |
329 | #endif /* HAVE_SIGSET */ | |
330 | ||
331 | if (fork() > 0) | |
332 | { | |
333 | /* | |
334 | * OK, wait for the child to startup and send us SIGUSR1 or to crash | |
335 | * and the OS send us SIGCHLD... We also need to ignore SIGHUP which | |
336 | * might be sent by the init script to restart the scheduler... | |
337 | */ | |
338 | ||
339 | for (; parent_signal == 0;) | |
340 | sleep(1); | |
341 | ||
342 | if (parent_signal == SIGUSR1) | |
343 | return (0); | |
344 | ||
345 | if (wait(&i) < 0) | |
346 | { | |
347 | perror("cupsd"); | |
348 | return (1); | |
349 | } | |
350 | else if (WIFEXITED(i)) | |
351 | { | |
bd7854cb | 352 | fprintf(stderr, "cupsd: Child exited with status %d!\n", |
353 | WEXITSTATUS(i)); | |
ef416fc2 | 354 | return (2); |
355 | } | |
356 | else | |
357 | { | |
358 | fprintf(stderr, "cupsd: Child exited on signal %d!\n", WTERMSIG(i)); | |
359 | return (3); | |
360 | } | |
361 | } | |
a41f09e2 MS |
362 | |
363 | #ifdef __APPLE__ | |
364 | /* | |
365 | * Since CoreFoundation has an overly-agressive check for whether a | |
366 | * process has forked but not exec'd (whether CF has been called or | |
367 | * not...), we now have to exec ourselves with the "-f" option to | |
368 | * eliminate their bogus warning messages. | |
369 | */ | |
370 | ||
371 | execlp(argv[0], argv[0], "-C", ConfigurationFile, (char *)0); | |
372 | exit(errno); | |
373 | #endif /* __APPLE__ */ | |
ef416fc2 | 374 | } |
375 | ||
376 | if (fg < 1) | |
377 | { | |
378 | /* | |
379 | * Make sure we aren't tying up any filesystems... | |
380 | */ | |
381 | ||
382 | chdir("/"); | |
383 | ||
384 | #ifndef DEBUG | |
385 | /* | |
386 | * Disable core dumps... | |
387 | */ | |
388 | ||
389 | getrlimit(RLIMIT_CORE, &limit); | |
390 | limit.rlim_cur = 0; | |
391 | setrlimit(RLIMIT_CORE, &limit); | |
392 | ||
393 | /* | |
394 | * Disconnect from the controlling terminal... | |
395 | */ | |
396 | ||
397 | setsid(); | |
398 | ||
399 | /* | |
400 | * Close all open files... | |
401 | */ | |
402 | ||
403 | getrlimit(RLIMIT_NOFILE, &limit); | |
404 | ||
b94498cf | 405 | for (i = 0; i < limit.rlim_cur && i < 1024; i ++) |
ef416fc2 | 406 | close(i); |
a4924f6c MS |
407 | |
408 | /* | |
409 | * Redirect stdin/out/err to /dev/null... | |
410 | */ | |
411 | ||
412 | open("/dev/null", O_RDONLY); | |
413 | open("/dev/null", O_WRONLY); | |
414 | open("/dev/null", O_WRONLY); | |
ef416fc2 | 415 | #endif /* DEBUG */ |
416 | } | |
417 | ||
418 | /* | |
419 | * Set the timezone info... | |
420 | */ | |
421 | ||
422 | tzset(); | |
423 | ||
424 | #ifdef LC_TIME | |
425 | setlocale(LC_TIME, ""); | |
426 | #endif /* LC_TIME */ | |
427 | ||
428 | /* | |
429 | * Set the maximum number of files... | |
430 | */ | |
431 | ||
432 | getrlimit(RLIMIT_NOFILE, &limit); | |
433 | ||
f7deaa1a | 434 | #if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE) |
f7faf1f5 | 435 | if (limit.rlim_max > FD_SETSIZE) |
436 | MaxFDs = FD_SETSIZE; | |
ef416fc2 | 437 | else |
f7deaa1a | 438 | #endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */ |
439 | #ifdef RLIM_INFINITY | |
440 | if (limit.rlim_max == RLIM_INFINITY) | |
441 | MaxFDs = 16384; | |
442 | else | |
443 | #endif /* RLIM_INFINITY */ | |
ef416fc2 | 444 | MaxFDs = limit.rlim_max; |
445 | ||
446 | limit.rlim_cur = MaxFDs; | |
447 | ||
448 | setrlimit(RLIMIT_NOFILE, &limit); | |
449 | ||
f7deaa1a | 450 | cupsdStartSelect(); |
ef416fc2 | 451 | |
452 | /* | |
453 | * Read configuration... | |
454 | */ | |
455 | ||
456 | if (!cupsdReadConfiguration()) | |
457 | { | |
2e4ff8af MS |
458 | if (TestConfigFile) |
459 | printf("%s contains errors\n", ConfigurationFile); | |
460 | else | |
461 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
462 | ConfigurationFile); | |
ef416fc2 | 463 | return (1); |
464 | } | |
2e4ff8af MS |
465 | else if (TestConfigFile) |
466 | { | |
467 | printf("%s is OK\n", ConfigurationFile); | |
468 | return (0); | |
469 | } | |
ef416fc2 | 470 | |
cc0d019f MS |
471 | if (!strncmp(TempDir, RequestRoot, strlen(RequestRoot))) |
472 | { | |
473 | /* | |
474 | * Clean out the temporary directory... | |
475 | */ | |
476 | ||
477 | cups_dir_t *dir; /* Temporary directory */ | |
478 | cups_dentry_t *dent; /* Directory entry */ | |
479 | char tempfile[1024]; /* Temporary filename */ | |
480 | ||
481 | ||
482 | if ((dir = cupsDirOpen(TempDir)) != NULL) | |
483 | { | |
484 | cupsdLogMessage(CUPSD_LOG_INFO, | |
485 | "Cleaning out old temporary files in \"%s\"...", TempDir); | |
486 | ||
487 | while ((dent = cupsDirRead(dir)) != NULL) | |
488 | { | |
489 | snprintf(tempfile, sizeof(tempfile), "%s/%s", TempDir, dent->filename); | |
490 | ||
491 | if (cupsdRemoveFile(tempfile)) | |
492 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
493 | "Unable to remove temporary file \"%s\" - %s", | |
494 | tempfile, strerror(errno)); | |
495 | else | |
496 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Removed temporary file \"%s\"...", | |
497 | tempfile); | |
498 | } | |
499 | ||
500 | cupsDirClose(dir); | |
501 | } | |
502 | else | |
503 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
504 | "Unable to open temporary directory \"%s\" - %s", | |
505 | TempDir, strerror(errno)); | |
506 | } | |
507 | ||
a4d04587 | 508 | #if HAVE_LAUNCHD |
4400e98d | 509 | if (Launchd) |
a4d04587 | 510 | { |
511 | /* | |
b94498cf | 512 | * If we were started by launchd get the listen sockets file descriptors... |
f7deaa1a | 513 | */ |
a4d04587 | 514 | |
515 | launchd_checkin(); | |
516 | } | |
517 | #endif /* HAVE_LAUNCHD */ | |
518 | ||
7594b224 | 519 | #if defined(__APPLE__) && defined(HAVE_DLFCN_H) |
520 | /* | |
521 | * Load Print Service quota enforcement library (X Server only) | |
522 | */ | |
523 | ||
524 | PSQLibRef = dlopen(PSQLibPath, RTLD_LAZY); | |
525 | ||
526 | if (PSQLibRef) | |
527 | PSQUpdateQuotaProc = dlsym(PSQLibRef, PSQLibFuncName); | |
528 | #endif /* __APPLE__ && HAVE_DLFCN_H */ | |
529 | ||
c24d2134 MS |
530 | #ifdef HAVE_GSSAPI |
531 | # ifdef __APPLE__ | |
532 | /* | |
533 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
534 | * to use it... | |
535 | */ | |
536 | ||
537 | if (krb5_init_context != NULL) | |
538 | # endif /* __APPLE__ */ | |
539 | ||
540 | /* | |
541 | * Setup a Kerberos context for the scheduler to use... | |
542 | */ | |
543 | ||
544 | if (krb5_init_context(&KerberosContext)) | |
a41f09e2 MS |
545 | { |
546 | KerberosContext = NULL; | |
547 | ||
c24d2134 | 548 | cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to initialize Kerberos context"); |
a41f09e2 | 549 | } |
c24d2134 MS |
550 | #endif /* HAVE_GSSAPI */ |
551 | ||
a4d04587 | 552 | /* |
553 | * Startup the server... | |
554 | */ | |
555 | ||
556 | cupsdStartServer(); | |
557 | ||
ef416fc2 | 558 | /* |
559 | * Catch hangup and child signals and ignore broken pipes... | |
560 | */ | |
561 | ||
562 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
e1d6a774 | 563 | sigset(SIGCHLD, sigchld_handler); |
4744bd90 | 564 | sigset(SIGHUP, sighup_handler); |
ef416fc2 | 565 | sigset(SIGPIPE, SIG_IGN); |
566 | sigset(SIGTERM, sigterm_handler); | |
567 | #elif defined(HAVE_SIGACTION) | |
568 | memset(&action, 0, sizeof(action)); | |
569 | ||
e1d6a774 | 570 | sigemptyset(&action.sa_mask); |
571 | sigaddset(&action.sa_mask, SIGTERM); | |
572 | sigaddset(&action.sa_mask, SIGCHLD); | |
573 | action.sa_handler = sigchld_handler; | |
574 | sigaction(SIGCHLD, &action, NULL); | |
575 | ||
ef416fc2 | 576 | sigemptyset(&action.sa_mask); |
577 | sigaddset(&action.sa_mask, SIGHUP); | |
4744bd90 | 578 | action.sa_handler = sighup_handler; |
ef416fc2 | 579 | sigaction(SIGHUP, &action, NULL); |
580 | ||
581 | sigemptyset(&action.sa_mask); | |
582 | action.sa_handler = SIG_IGN; | |
583 | sigaction(SIGPIPE, &action, NULL); | |
584 | ||
585 | sigemptyset(&action.sa_mask); | |
586 | sigaddset(&action.sa_mask, SIGTERM); | |
587 | sigaddset(&action.sa_mask, SIGCHLD); | |
588 | action.sa_handler = sigterm_handler; | |
589 | sigaction(SIGTERM, &action, NULL); | |
590 | #else | |
e1d6a774 | 591 | signal(SIGCLD, sigchld_handler); /* No, SIGCLD isn't a typo... */ |
4744bd90 | 592 | signal(SIGHUP, sighup_handler); |
ef416fc2 | 593 | signal(SIGPIPE, SIG_IGN); |
594 | signal(SIGTERM, sigterm_handler); | |
595 | #endif /* HAVE_SIGSET */ | |
596 | ||
597 | #ifdef __sgi | |
598 | /* | |
599 | * Try to create a fake lpsched lock file if one is not already there. | |
600 | * Some Adobe applications need it under IRIX in order to enable | |
601 | * printing... | |
602 | */ | |
603 | ||
604 | if ((fp = cupsFileOpen("/var/spool/lp/SCHEDLOCK", "w")) == NULL) | |
605 | { | |
606 | syslog(LOG_LPR, "Unable to create fake lpsched lock file " | |
607 | "\"/var/spool/lp/SCHEDLOCK\"\' - %s!", | |
608 | strerror(errno)); | |
609 | } | |
610 | else | |
611 | { | |
612 | fchmod(cupsFileNumber(fp), 0644); | |
613 | fchown(cupsFileNumber(fp), User, Group); | |
614 | ||
615 | cupsFileClose(fp); | |
616 | } | |
617 | #endif /* __sgi */ | |
618 | ||
619 | /* | |
620 | * Initialize authentication certificates... | |
621 | */ | |
622 | ||
623 | cupsdInitCerts(); | |
624 | ||
625 | /* | |
626 | * If we are running in the background, signal the parent process that | |
627 | * we are up and running... | |
628 | */ | |
629 | ||
a41f09e2 MS |
630 | #ifdef __APPLE__ |
631 | if (!fg || run_as_child) | |
632 | #else | |
ef416fc2 | 633 | if (!fg) |
a41f09e2 | 634 | #endif /* __APPLE__ */ |
ef416fc2 | 635 | { |
636 | /* | |
637 | * Send a signal to the parent process, but only if the parent is | |
638 | * not PID 1 (init). This avoids accidentally shutting down the | |
639 | * system on OpenBSD if you CTRL-C the server before it is up... | |
640 | */ | |
641 | ||
642 | i = getppid(); /* Save parent PID to avoid race condition */ | |
643 | ||
644 | if (i != 1) | |
645 | kill(i, SIGUSR1); | |
646 | } | |
647 | ||
e1d6a774 | 648 | #ifdef __APPLE__ |
09ec0018 | 649 | /* |
650 | * Start power management framework... | |
651 | */ | |
652 | ||
653 | cupsdStartSystemMonitor(); | |
e1d6a774 | 654 | #endif /* __APPLE__ */ |
ef416fc2 | 655 | |
656 | /* | |
657 | * Start any pending print jobs... | |
658 | */ | |
659 | ||
660 | cupsdCheckJobs(); | |
661 | ||
662 | /* | |
663 | * Loop forever... | |
664 | */ | |
665 | ||
ef416fc2 | 666 | browse_time = time(NULL); |
ef416fc2 | 667 | expire_time = time(NULL); |
668 | fds = 1; | |
5bd77a73 MS |
669 | report_time = 0; |
670 | senddoc_time = time(NULL); | |
ef416fc2 | 671 | |
672 | while (!stop_scheduler) | |
673 | { | |
674 | #ifdef DEBUG | |
675 | cupsdLogMessage(CUPSD_LOG_DEBUG2, | |
676 | "main: Top of loop, dead_children=%d, NeedReload=%d", | |
677 | dead_children, NeedReload); | |
678 | #endif /* DEBUG */ | |
679 | ||
680 | /* | |
681 | * Check if there are dead children to handle... | |
682 | */ | |
683 | ||
684 | if (dead_children) | |
685 | process_children(); | |
686 | ||
687 | /* | |
688 | * Check if we need to load the server configuration file... | |
689 | */ | |
690 | ||
691 | if (NeedReload) | |
692 | { | |
693 | /* | |
694 | * Close any idle clients... | |
695 | */ | |
696 | ||
bd7854cb | 697 | if (cupsArrayCount(Clients) > 0) |
ef416fc2 | 698 | { |
bd7854cb | 699 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
700 | con; | |
701 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 702 | if (con->http.state == HTTP_WAITING) |
ef416fc2 | 703 | cupsdCloseClient(con); |
ef416fc2 | 704 | else |
705 | con->http.keep_alive = HTTP_KEEPALIVE_OFF; | |
706 | ||
707 | cupsdPauseListening(); | |
708 | } | |
709 | ||
710 | /* | |
711 | * Check for any active jobs... | |
712 | */ | |
713 | ||
714 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
715 | job; | |
716 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 717 | if (job->state_value == IPP_JOB_PROCESSING) |
ef416fc2 | 718 | break; |
719 | ||
720 | /* | |
721 | * Restart if all clients are closed and all jobs finished, or | |
722 | * if the reload timeout has elapsed... | |
723 | */ | |
724 | ||
bd7854cb | 725 | if ((cupsArrayCount(Clients) == 0 && |
726 | (!job || NeedReload != RELOAD_ALL)) || | |
ef416fc2 | 727 | (time(NULL) - ReloadTime) >= ReloadTimeout) |
728 | { | |
a4d04587 | 729 | /* |
730 | * Shutdown the server... | |
731 | */ | |
732 | ||
733 | cupsdStopServer(); | |
734 | ||
735 | /* | |
736 | * Read configuration... | |
737 | */ | |
738 | ||
ef416fc2 | 739 | if (!cupsdReadConfiguration()) |
740 | { | |
741 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
742 | ConfigurationFile); | |
743 | break; | |
744 | } | |
a4d04587 | 745 | |
746 | #if HAVE_LAUNCHD | |
4400e98d | 747 | if (Launchd) |
a4d04587 | 748 | { |
b94498cf | 749 | /* |
750 | * If we were started by launchd get the listen sockets file descriptors... | |
751 | */ | |
752 | ||
a4d04587 | 753 | launchd_checkin(); |
754 | } | |
755 | #endif /* HAVE_LAUNCHD */ | |
756 | ||
757 | /* | |
758 | * Startup the server... | |
759 | */ | |
760 | ||
761 | cupsdStartServer(); | |
ef416fc2 | 762 | } |
763 | } | |
764 | ||
765 | /* | |
f7deaa1a | 766 | * Check for available input or ready output. If cupsdDoSelect() |
767 | * returns 0 or -1, something bad happened and we should exit | |
768 | * immediately. | |
ef416fc2 | 769 | * |
770 | * Note that we at least have one listening socket open at all | |
771 | * times. | |
772 | */ | |
773 | ||
f7deaa1a | 774 | timeout = select_timeout(fds); |
ef416fc2 | 775 | |
a4d04587 | 776 | #if HAVE_LAUNCHD |
777 | /* | |
778 | * If no other work is scheduled and we're being controlled by | |
411affcf | 779 | * launchd then timeout after 'LaunchdTimeout' seconds of |
a4d04587 | 780 | * inactivity... |
781 | */ | |
782 | ||
f7deaa1a | 783 | if (timeout == 86400 && Launchd && LaunchdTimeout && !NumPolled && |
bc44d920 | 784 | !cupsArrayCount(ActiveJobs) && |
f7deaa1a | 785 | (!Browsing || |
786 | (!BrowseRemoteProtocols && | |
787 | (!NumBrowsers || !BrowseLocalProtocols || | |
788 | cupsArrayCount(Printers) == 0)))) | |
a4d04587 | 789 | { |
f7deaa1a | 790 | timeout = LaunchdTimeout; |
a4d04587 | 791 | launchd_idle_exit = 1; |
792 | } | |
793 | else | |
794 | launchd_idle_exit = 0; | |
795 | #endif /* HAVE_LAUNCHD */ | |
796 | ||
f7deaa1a | 797 | if ((fds = cupsdDoSelect(timeout)) < 0) |
ef416fc2 | 798 | { |
ef416fc2 | 799 | /* |
800 | * Got an error from select! | |
801 | */ | |
802 | ||
f7deaa1a | 803 | #ifdef HAVE_DNSSD |
804 | cupsd_printer_t *p; /* Current printer */ | |
805 | #endif /* HAVE_DNSSD */ | |
806 | ||
807 | ||
808 | if (errno == EINTR) /* Just interrupted by a signal */ | |
ef416fc2 | 809 | continue; |
810 | ||
811 | /* | |
812 | * Log all sorts of debug info to help track down the problem. | |
813 | */ | |
814 | ||
f7deaa1a | 815 | cupsdLogMessage(CUPSD_LOG_EMERG, "cupsdDoSelect() failed - %s!", |
ef416fc2 | 816 | strerror(errno)); |
817 | ||
bd7854cb | 818 | for (i = 0, con = (cupsd_client_t *)cupsArrayFirst(Clients); |
819 | con; | |
820 | i ++, con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 821 | cupsdLogMessage(CUPSD_LOG_EMERG, |
822 | "Clients[%d] = %d, file = %d, state = %d", | |
823 | i, con->http.fd, con->file, con->http.state); | |
824 | ||
bd7854cb | 825 | for (i = 0, lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
826 | lis; | |
827 | i ++, lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
ef416fc2 | 828 | cupsdLogMessage(CUPSD_LOG_EMERG, "Listeners[%d] = %d", i, lis->fd); |
829 | ||
830 | cupsdLogMessage(CUPSD_LOG_EMERG, "BrowseSocket = %d", BrowseSocket); | |
831 | ||
923edb68 | 832 | cupsdLogMessage(CUPSD_LOG_EMERG, "CGIPipes[0] = %d", CGIPipes[0]); |
833 | ||
09ec0018 | 834 | #ifdef __APPLE__ |
835 | cupsdLogMessage(CUPSD_LOG_EMERG, "SysEventPipes[0] = %d", | |
836 | SysEventPipes[0]); | |
837 | #endif /* __APPLE__ */ | |
838 | ||
ef416fc2 | 839 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); |
840 | job; | |
841 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
842 | cupsdLogMessage(CUPSD_LOG_EMERG, "Jobs[%d] = %d < [%d %d] > [%d %d]", | |
843 | job->id, | |
844 | job->status_buffer ? job->status_buffer->fd : -1, | |
845 | job->print_pipes[0], job->print_pipes[1], | |
846 | job->back_pipes[0], job->back_pipes[1]); | |
f7deaa1a | 847 | |
848 | #ifdef HAVE_DNSSD | |
849 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
850 | p; | |
851 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
852 | cupsdLogMessage(CUPSD_LOG_EMERG, "printer[%s] %d", p->name, | |
853 | p->dnssd_ipp_fd); | |
854 | #endif /* HAVE_DNSSD */ | |
855 | ||
ef416fc2 | 856 | break; |
857 | } | |
858 | ||
859 | current_time = time(NULL); | |
860 | ||
a4924f6c MS |
861 | #ifndef __APPLE__ |
862 | /* | |
863 | * Update the network interfaces once a minute... | |
864 | */ | |
865 | ||
866 | if ((current_time - netif_time) >= 60) | |
867 | { | |
868 | netif_time = current_time; | |
869 | NetIFUpdate = 1; | |
870 | } | |
871 | #endif /* !__APPLE__ */ | |
872 | ||
a4d04587 | 873 | #if HAVE_LAUNCHD |
874 | /* | |
411affcf | 875 | * If no other work was scheduled and we're being controlled by launchd |
a4d04587 | 876 | * then timeout after 'LaunchdTimeout' seconds of inactivity... |
877 | */ | |
878 | ||
879 | if (!fds && launchd_idle_exit) | |
880 | { | |
881 | cupsdLogMessage(CUPSD_LOG_INFO, | |
882 | "Printer sharing is off and there are no jobs pending, " | |
883 | "will restart on demand."); | |
884 | stop_scheduler = 1; | |
885 | break; | |
886 | } | |
887 | #endif /* HAVE_LAUNCHD */ | |
888 | ||
76cd9e37 MS |
889 | /* |
890 | * Resume listening for new connections as needed... | |
891 | */ | |
892 | ||
893 | if (ListeningPaused && ListeningPaused <= current_time && | |
894 | cupsArrayCount(Clients) < MaxClients) | |
895 | cupsdResumeListening(); | |
896 | ||
ef416fc2 | 897 | /* |
bd7854cb | 898 | * Expire subscriptions and unload completed jobs as needed... |
ef416fc2 | 899 | */ |
900 | ||
bd7854cb | 901 | if (current_time > expire_time) |
ef416fc2 | 902 | { |
bd7854cb | 903 | if (cupsArrayCount(Subscriptions) > 0) |
904 | cupsdExpireSubscriptions(NULL, NULL); | |
905 | ||
906 | cupsdUnloadCompletedJobs(); | |
ef416fc2 | 907 | |
908 | expire_time = current_time; | |
909 | } | |
910 | ||
911 | /* | |
912 | * Update the browse list as needed... | |
913 | */ | |
914 | ||
f7deaa1a | 915 | if (Browsing) |
ef416fc2 | 916 | { |
ef416fc2 | 917 | #ifdef HAVE_LIBSLP |
b423cd4c | 918 | if ((BrowseRemoteProtocols & BROWSE_SLP) && |
ef416fc2 | 919 | BrowseSLPRefresh <= current_time) |
920 | cupsdUpdateSLPBrowse(); | |
921 | #endif /* HAVE_LIBSLP */ | |
b423cd4c | 922 | |
923 | #ifdef HAVE_LDAP | |
924 | if ((BrowseRemoteProtocols & BROWSE_LDAP) && | |
925 | BrowseLDAPRefresh <= current_time) | |
926 | cupsdUpdateLDAPBrowse(); | |
927 | #endif /* HAVE_LDAP */ | |
fa73b229 | 928 | } |
ef416fc2 | 929 | |
fa73b229 | 930 | if (Browsing && BrowseLocalProtocols && current_time > browse_time) |
931 | { | |
932 | cupsdSendBrowseList(); | |
933 | browse_time = current_time; | |
ef416fc2 | 934 | } |
935 | ||
936 | /* | |
f7deaa1a | 937 | * Update the root certificate once every 5 minutes if we have client |
938 | * connections... | |
ef416fc2 | 939 | */ |
940 | ||
f7deaa1a | 941 | if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration && |
942 | !RunUser && cupsArrayCount(Clients)) | |
943 | { | |
944 | /* | |
945 | * Update the root certificate... | |
946 | */ | |
947 | ||
948 | cupsdDeleteCert(0); | |
5bd77a73 | 949 | cupsdAddCert(0, "root", NULL); |
f7deaa1a | 950 | } |
ef416fc2 | 951 | |
952 | /* | |
953 | * Check for new data on the client sockets... | |
954 | */ | |
955 | ||
bd7854cb | 956 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
957 | con; | |
958 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 959 | { |
960 | /* | |
f7deaa1a | 961 | * Process pending data in the input buffer... |
ef416fc2 | 962 | */ |
963 | ||
f7deaa1a | 964 | if (con->http.used) |
ef416fc2 | 965 | { |
f7deaa1a | 966 | cupsdReadClient(con); |
967 | continue; | |
ef416fc2 | 968 | } |
969 | ||
970 | /* | |
971 | * Check the activity and close old clients... | |
972 | */ | |
973 | ||
974 | activity = current_time - Timeout; | |
975 | if (con->http.activity < activity && !con->pipe_pid) | |
976 | { | |
977 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
978 | "Closing client %d after %d seconds of inactivity...", | |
979 | con->http.fd, Timeout); | |
980 | ||
981 | cupsdCloseClient(con); | |
ef416fc2 | 982 | continue; |
983 | } | |
984 | } | |
985 | ||
986 | /* | |
987 | * Update any pending multi-file documents... | |
988 | */ | |
989 | ||
990 | if ((current_time - senddoc_time) >= 10) | |
991 | { | |
992 | cupsdCheckJobs(); | |
993 | senddoc_time = current_time; | |
994 | } | |
995 | ||
ef416fc2 | 996 | /* |
5bd77a73 | 997 | * Log statistics at most once a minute when in debug mode... |
ef416fc2 | 998 | */ |
999 | ||
5bd77a73 | 1000 | if ((current_time - report_time) >= 60 && LogLevel >= CUPSD_LOG_DEBUG) |
ef416fc2 | 1001 | { |
5bd77a73 MS |
1002 | size_t string_count, /* String count */ |
1003 | alloc_bytes, /* Allocated string bytes */ | |
1004 | total_bytes; /* Total string bytes */ | |
4400e98d | 1005 | #ifdef HAVE_MALLINFO |
5bd77a73 | 1006 | struct mallinfo mem; /* Malloc information */ |
ef416fc2 | 1007 | |
1008 | ||
1009 | mem = mallinfo(); | |
5bd77a73 MS |
1010 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-arena=%lu", mem.arena); |
1011 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-used=%lu", | |
1012 | mem.usmblks + mem.uordblks); | |
1013 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-free=%lu", | |
ef416fc2 | 1014 | mem.fsmblks + mem.fordblks); |
4400e98d | 1015 | #endif /* HAVE_MALLINFO */ |
1016 | ||
5bd77a73 MS |
1017 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: clients=%d", |
1018 | cupsArrayCount(Clients)); | |
1019 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs=%d", | |
1020 | cupsArrayCount(Jobs)); | |
1021 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs-active=%d", | |
1022 | cupsArrayCount(ActiveJobs)); | |
1023 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: printers=%d", | |
1024 | cupsArrayCount(Printers)); | |
1025 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: printers-implicit=%d", | |
1026 | cupsArrayCount(ImplicitPrinters)); | |
1027 | ||
757d2cad | 1028 | string_count = _cupsStrStatistics(&alloc_bytes, &total_bytes); |
5bd77a73 MS |
1029 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
1030 | "Report: stringpool-string-count=" CUPS_LLFMT, | |
1031 | CUPS_LLCAST string_count); | |
1032 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1033 | "Report: stringpool-alloc-bytes=" CUPS_LLFMT, | |
1034 | CUPS_LLCAST alloc_bytes); | |
1035 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1036 | "Report: stringpool-total-bytes=" CUPS_LLFMT, | |
4400e98d | 1037 | CUPS_LLCAST total_bytes); |
1038 | ||
5bd77a73 | 1039 | report_time = current_time; |
ef416fc2 | 1040 | } |
ef416fc2 | 1041 | |
fa73b229 | 1042 | /* |
1043 | * Handle OS-specific event notification for any events that have | |
1044 | * accumulated. Don't send these more than once a second... | |
1045 | */ | |
1046 | ||
e53920b9 | 1047 | if (LastEvent) |
fa73b229 | 1048 | { |
1049 | #ifdef HAVE_NOTIFY_POST | |
a41f09e2 MS |
1050 | if (LastEvent & (CUPSD_EVENT_PRINTER_ADDED | |
1051 | CUPSD_EVENT_PRINTER_DELETED | | |
1052 | CUPSD_EVENT_PRINTER_MODIFIED)) | |
fa73b229 | 1053 | { |
e00b005a | 1054 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 1055 | "notify_post(\"com.apple.printerListChange\")"); |
1056 | notify_post("com.apple.printerListChange"); | |
1057 | } | |
1058 | ||
1059 | if (LastEvent & CUPSD_EVENT_PRINTER_STATE_CHANGED) | |
1060 | { | |
e00b005a | 1061 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 1062 | "notify_post(\"com.apple.printerHistoryChange\")"); |
1063 | notify_post("com.apple.printerHistoryChange"); | |
1064 | } | |
1065 | ||
1066 | if (LastEvent & (CUPSD_EVENT_JOB_STATE_CHANGED | | |
1067 | CUPSD_EVENT_JOB_CONFIG_CHANGED | | |
1068 | CUPSD_EVENT_JOB_PROGRESS)) | |
1069 | { | |
e00b005a | 1070 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 1071 | "notify_post(\"com.apple.jobChange\")"); |
1072 | notify_post("com.apple.jobChange"); | |
1073 | } | |
1074 | #endif /* HAVE_NOTIFY_POST */ | |
1075 | ||
1076 | /* | |
e53920b9 | 1077 | * Reset the accumulated events... |
fa73b229 | 1078 | */ |
1079 | ||
d9bca400 | 1080 | LastEvent = CUPSD_EVENT_NONE; |
fa73b229 | 1081 | } |
ef416fc2 | 1082 | } |
1083 | ||
1084 | /* | |
1085 | * Log a message based on what happened... | |
1086 | */ | |
1087 | ||
1088 | if (stop_scheduler) | |
1089 | cupsdLogMessage(CUPSD_LOG_INFO, "Scheduler shutting down normally."); | |
1090 | else | |
1091 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1092 | "Scheduler shutting down due to program error."); | |
1093 | ||
1094 | /* | |
7ff4fea9 | 1095 | * Close all network clients... |
ef416fc2 | 1096 | */ |
1097 | ||
1098 | cupsdStopServer(); | |
1099 | ||
7ff4fea9 MS |
1100 | #ifdef HAVE_LAUNCHD |
1101 | /* | |
1102 | * Update the launchd KeepAlive file as needed... | |
1103 | */ | |
1104 | ||
1105 | if (Launchd) | |
1106 | launchd_checkout(); | |
1107 | #endif /* HAVE_LAUNCHD */ | |
1108 | ||
1109 | /* | |
1110 | * Stop all jobs... | |
1111 | */ | |
1112 | ||
bd7854cb | 1113 | cupsdFreeAllJobs(); |
ef416fc2 | 1114 | |
e1d6a774 | 1115 | #ifdef __APPLE__ |
7ff4fea9 MS |
1116 | /* |
1117 | * Stop monitoring system event monitoring... | |
1118 | */ | |
1119 | ||
09ec0018 | 1120 | cupsdStopSystemMonitor(); |
e1d6a774 | 1121 | #endif /* __APPLE__ */ |
09ec0018 | 1122 | |
c24d2134 | 1123 | #ifdef HAVE_GSSAPI |
7ff4fea9 MS |
1124 | /* |
1125 | * Free the scheduler's Kerberos context... | |
1126 | */ | |
1127 | ||
c24d2134 MS |
1128 | # ifdef __APPLE__ |
1129 | /* | |
1130 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
1131 | * to use it... | |
1132 | */ | |
1133 | ||
1134 | if (krb5_init_context != NULL) | |
1135 | # endif /* __APPLE__ */ | |
a41f09e2 MS |
1136 | if (KerberosContext) |
1137 | krb5_free_context(KerberosContext); | |
c24d2134 MS |
1138 | #endif /* HAVE_GSSAPI */ |
1139 | ||
b94498cf | 1140 | #ifdef __APPLE__ |
1141 | #ifdef HAVE_DLFCN_H | |
1142 | /* | |
1143 | * Unload Print Service quota enforcement library (X Server only) | |
1144 | */ | |
411affcf | 1145 | |
b94498cf | 1146 | PSQUpdateQuotaProc = NULL; |
1147 | if (PSQLibRef) | |
1148 | { | |
1149 | dlclose(PSQLibRef); | |
1150 | PSQLibRef = NULL; | |
f7deaa1a | 1151 | } |
b94498cf | 1152 | #endif /* HAVE_DLFCN_H */ |
1153 | #endif /* __APPLE__ */ | |
a4d04587 | 1154 | |
ef416fc2 | 1155 | #ifdef __sgi |
1156 | /* | |
1157 | * Remove the fake IRIX lpsched lock file, but only if the existing | |
1158 | * file is not a FIFO which indicates that the real IRIX lpsched is | |
1159 | * running... | |
1160 | */ | |
1161 | ||
1162 | if (!stat("/var/spool/lp/FIFO", &statbuf)) | |
1163 | if (!S_ISFIFO(statbuf.st_mode)) | |
1164 | unlink("/var/spool/lp/SCHEDLOCK"); | |
1165 | #endif /* __sgi */ | |
1166 | ||
f7deaa1a | 1167 | cupsdStopSelect(); |
ef416fc2 | 1168 | |
1169 | return (!stop_scheduler); | |
1170 | } | |
1171 | ||
1172 | ||
1173 | /* | |
1174 | * 'cupsdClosePipe()' - Close a pipe as necessary. | |
1175 | */ | |
1176 | ||
1177 | void | |
1178 | cupsdClosePipe(int *fds) /* I - Pipe file descriptors (2) */ | |
1179 | { | |
1180 | /* | |
1181 | * Close file descriptors as needed... | |
1182 | */ | |
1183 | ||
1184 | if (fds[0] >= 0) | |
1185 | { | |
1186 | close(fds[0]); | |
1187 | fds[0] = -1; | |
1188 | } | |
1189 | ||
1190 | if (fds[1] >= 0) | |
1191 | { | |
1192 | close(fds[1]); | |
1193 | fds[1] = -1; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | ||
1198 | /* | |
1199 | * 'cupsdOpenPipe()' - Create a pipe which is closed on exec. | |
1200 | */ | |
1201 | ||
1202 | int /* O - 0 on success, -1 on error */ | |
1203 | cupsdOpenPipe(int *fds) /* O - Pipe file descriptors (2) */ | |
1204 | { | |
1205 | /* | |
1206 | * Create the pipe... | |
1207 | */ | |
1208 | ||
1209 | if (pipe(fds)) | |
e1d6a774 | 1210 | { |
1211 | fds[0] = -1; | |
1212 | fds[1] = -1; | |
1213 | ||
ef416fc2 | 1214 | return (-1); |
e1d6a774 | 1215 | } |
ef416fc2 | 1216 | |
1217 | /* | |
1218 | * Set the "close on exec" flag on each end of the pipe... | |
1219 | */ | |
1220 | ||
1221 | if (fcntl(fds[0], F_SETFD, fcntl(fds[0], F_GETFD) | FD_CLOEXEC)) | |
1222 | { | |
1223 | close(fds[0]); | |
1224 | close(fds[1]); | |
e1d6a774 | 1225 | |
1226 | fds[0] = -1; | |
1227 | fds[1] = -1; | |
1228 | ||
ef416fc2 | 1229 | return (-1); |
1230 | } | |
1231 | ||
1232 | if (fcntl(fds[1], F_SETFD, fcntl(fds[1], F_GETFD) | FD_CLOEXEC)) | |
1233 | { | |
1234 | close(fds[0]); | |
1235 | close(fds[1]); | |
e1d6a774 | 1236 | |
1237 | fds[0] = -1; | |
1238 | fds[1] = -1; | |
1239 | ||
ef416fc2 | 1240 | return (-1); |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * Return 0 indicating success... | |
1245 | */ | |
1246 | ||
1247 | return (0); | |
1248 | } | |
1249 | ||
1250 | ||
ef416fc2 | 1251 | /* |
1252 | * 'cupsdClearString()' - Clear a string. | |
1253 | */ | |
1254 | ||
1255 | void | |
1256 | cupsdClearString(char **s) /* O - String value */ | |
1257 | { | |
1258 | if (s && *s) | |
1259 | { | |
e53920b9 | 1260 | _cupsStrFree(*s); |
ef416fc2 | 1261 | *s = NULL; |
1262 | } | |
1263 | } | |
1264 | ||
1265 | ||
1266 | /* | |
1267 | * 'cupsdHoldSignals()' - Hold child and termination signals. | |
1268 | */ | |
1269 | ||
1270 | void | |
1271 | cupsdHoldSignals(void) | |
1272 | { | |
1273 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
1274 | sigset_t newmask; /* New POSIX signal mask */ | |
1275 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
1276 | ||
1277 | ||
1278 | holdcount ++; | |
1279 | if (holdcount > 1) | |
1280 | return; | |
1281 | ||
1282 | #ifdef HAVE_SIGSET | |
1283 | sighold(SIGTERM); | |
1284 | sighold(SIGCHLD); | |
1285 | #elif defined(HAVE_SIGACTION) | |
1286 | sigemptyset(&newmask); | |
1287 | sigaddset(&newmask, SIGTERM); | |
1288 | sigaddset(&newmask, SIGCHLD); | |
1289 | sigprocmask(SIG_BLOCK, &newmask, &holdmask); | |
1290 | #endif /* HAVE_SIGSET */ | |
1291 | } | |
1292 | ||
1293 | ||
ef416fc2 | 1294 | /* |
1295 | * 'cupsdReleaseSignals()' - Release signals for delivery. | |
1296 | */ | |
1297 | ||
1298 | void | |
1299 | cupsdReleaseSignals(void) | |
1300 | { | |
1301 | holdcount --; | |
1302 | if (holdcount > 0) | |
1303 | return; | |
1304 | ||
1305 | #ifdef HAVE_SIGSET | |
1306 | sigrelse(SIGTERM); | |
1307 | sigrelse(SIGCHLD); | |
1308 | #elif defined(HAVE_SIGACTION) | |
1309 | sigprocmask(SIG_SETMASK, &holdmask, NULL); | |
1310 | #endif /* HAVE_SIGSET */ | |
1311 | } | |
1312 | ||
1313 | ||
1314 | /* | |
1315 | * 'cupsdSetString()' - Set a string value. | |
1316 | */ | |
1317 | ||
1318 | void | |
1319 | cupsdSetString(char **s, /* O - New string */ | |
1320 | const char *v) /* I - String value */ | |
1321 | { | |
1322 | if (!s || *s == v) | |
1323 | return; | |
1324 | ||
1325 | if (*s) | |
e53920b9 | 1326 | _cupsStrFree(*s); |
ef416fc2 | 1327 | |
1328 | if (v) | |
e53920b9 | 1329 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1330 | else |
1331 | *s = NULL; | |
1332 | } | |
1333 | ||
1334 | ||
1335 | /* | |
1336 | * 'cupsdSetStringf()' - Set a formatted string value. | |
1337 | */ | |
1338 | ||
1339 | void | |
1340 | cupsdSetStringf(char **s, /* O - New string */ | |
1341 | const char *f, /* I - Printf-style format string */ | |
1342 | ...) /* I - Additional args as needed */ | |
1343 | { | |
1344 | char v[4096]; /* Formatting string value */ | |
1345 | va_list ap; /* Argument pointer */ | |
1346 | char *olds; /* Old string */ | |
1347 | ||
1348 | ||
1349 | if (!s) | |
1350 | return; | |
1351 | ||
1352 | olds = *s; | |
1353 | ||
1354 | if (f) | |
1355 | { | |
1356 | va_start(ap, f); | |
1357 | vsnprintf(v, sizeof(v), f, ap); | |
1358 | va_end(ap); | |
1359 | ||
e53920b9 | 1360 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1361 | } |
1362 | else | |
1363 | *s = NULL; | |
1364 | ||
1365 | if (olds) | |
e53920b9 | 1366 | _cupsStrFree(olds); |
ef416fc2 | 1367 | } |
1368 | ||
1369 | ||
a4d04587 | 1370 | #ifdef HAVE_LAUNCHD |
1371 | /* | |
1372 | * 'launchd_checkin()' - Check-in with launchd and collect the listening fds. | |
1373 | */ | |
1374 | ||
1375 | static void | |
1376 | launchd_checkin(void) | |
1377 | { | |
1378 | int i, /* Looping var */ | |
bd7854cb | 1379 | count, /* Numebr of listeners */ |
a4d04587 | 1380 | portnum; /* Port number */ |
1381 | launch_data_t ld_msg, /* Launch data message */ | |
1382 | ld_resp, /* Launch data response */ | |
1383 | ld_array, /* Launch data array */ | |
1384 | ld_sockets, /* Launch data sockets dictionary */ | |
a4d04587 | 1385 | tmp; /* Launch data */ |
1386 | cupsd_listener_t *lis; /* Listeners array */ | |
1387 | http_addr_t addr; /* Address variable */ | |
1388 | socklen_t addrlen; /* Length of address */ | |
f7deaa1a | 1389 | int fd; /* File descriptor */ |
1390 | char s[256]; /* String addresss */ | |
a4d04587 | 1391 | |
1392 | ||
1393 | cupsdLogMessage(CUPSD_LOG_DEBUG, "launchd_checkin: pid=%d", (int)getpid()); | |
1394 | ||
1395 | /* | |
1396 | * Check-in with launchd... | |
1397 | */ | |
1398 | ||
1399 | ld_msg = launch_data_new_string(LAUNCH_KEY_CHECKIN); | |
1400 | if ((ld_resp = launch_msg(ld_msg)) == NULL) | |
1401 | { | |
bd7854cb | 1402 | cupsdLogMessage(CUPSD_LOG_ERROR, |
a4d04587 | 1403 | "launchd_checkin: launch_msg(\"" LAUNCH_KEY_CHECKIN |
1404 | "\") IPC failure"); | |
1405 | exit(EXIT_FAILURE); | |
1406 | } | |
bd7854cb | 1407 | |
a4d04587 | 1408 | if (launch_data_get_type(ld_resp) == LAUNCH_DATA_ERRNO) |
1409 | { | |
1410 | errno = launch_data_get_errno(ld_resp); | |
1411 | cupsdLogMessage(CUPSD_LOG_ERROR, "launchd_checkin: Check-in failed: %s", | |
1412 | strerror(errno)); | |
1413 | exit(EXIT_FAILURE); | |
1414 | } | |
1415 | ||
a4d04587 | 1416 | /* |
1417 | * Get the sockets dictionary... | |
1418 | */ | |
1419 | ||
1420 | if (!(ld_sockets = launch_data_dict_lookup(ld_resp, LAUNCH_JOBKEY_SOCKETS))) | |
1421 | { | |
1422 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1423 | "launchd_checkin: No sockets found to answer requests on!"); | |
1424 | exit(EXIT_FAILURE); | |
1425 | } | |
bd7854cb | 1426 | |
a4d04587 | 1427 | /* |
1428 | * Get the array of listener sockets... | |
1429 | */ | |
1430 | ||
1431 | if (!(ld_array = launch_data_dict_lookup(ld_sockets, "Listeners"))) | |
1432 | { | |
1433 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1434 | "launchd_checkin: No sockets found to answer requests on!"); | |
1435 | exit(EXIT_FAILURE); | |
1436 | } | |
1437 | ||
1438 | /* | |
1439 | * Add listening fd(s) to the Listener array... | |
1440 | */ | |
1441 | ||
1442 | if (launch_data_get_type(ld_array) == LAUNCH_DATA_ARRAY) | |
1443 | { | |
f7deaa1a | 1444 | count = launch_data_array_get_count(ld_array); |
bd7854cb | 1445 | |
1446 | for (i = 0; i < count; i ++) | |
a4d04587 | 1447 | { |
1448 | /* | |
f7deaa1a | 1449 | * Get the launchd file descriptor and address... |
a4d04587 | 1450 | */ |
bd7854cb | 1451 | |
f7deaa1a | 1452 | tmp = launch_data_array_get_index(ld_array, i); |
1453 | fd = launch_data_get_fd(tmp); | |
1454 | addrlen = sizeof(addr); | |
1455 | ||
1456 | if (getsockname(fd, (struct sockaddr *)&addr, &addrlen)) | |
bd7854cb | 1457 | { |
1458 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
f7deaa1a | 1459 | "launchd_checkin: Unable to get local address - %s", |
1460 | strerror(errno)); | |
1461 | continue; | |
bd7854cb | 1462 | } |
1463 | ||
f7deaa1a | 1464 | /* |
1465 | * Try to match the launchd socket address to one of the listeners... | |
1466 | */ | |
bd7854cb | 1467 | |
f7deaa1a | 1468 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
1469 | lis; | |
1470 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
1471 | if (httpAddrEqual(&lis->address, &addr)) | |
1472 | break; | |
1473 | ||
1474 | /* | |
1475 | * Add a new listener If there's no match... | |
1476 | */ | |
a4d04587 | 1477 | |
f7deaa1a | 1478 | if (lis) |
a4d04587 | 1479 | { |
f7deaa1a | 1480 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
1481 | "launchd_checkin: Matched existing listener %s with fd %d...", | |
1482 | httpAddrString(&(lis->address), s, sizeof(s)), fd); | |
1483 | } | |
1484 | else | |
1485 | { | |
1486 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1487 | "launchd_checkin: Adding new listener %s with fd %d...", | |
1488 | httpAddrString(&addr, s, sizeof(s)), fd); | |
1489 | ||
1490 | if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL) | |
1491 | { | |
1492 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1493 | "launchd_checkin: Unable to allocate listener - %s.", | |
1494 | strerror(errno)); | |
1495 | exit(EXIT_FAILURE); | |
1496 | } | |
1497 | ||
1498 | cupsArrayAdd(Listeners, lis); | |
1499 | ||
1500 | memcpy(&lis->address, &addr, sizeof(lis->address)); | |
a4d04587 | 1501 | } |
bd7854cb | 1502 | |
f7deaa1a | 1503 | lis->fd = fd; |
1504 | ||
a4d04587 | 1505 | # ifdef HAVE_SSL |
1506 | portnum = 0; | |
bd7854cb | 1507 | |
a4d04587 | 1508 | # ifdef AF_INET6 |
f7deaa1a | 1509 | if (lis->address.addr.sa_family == AF_INET6) |
1510 | portnum = ntohs(lis->address.ipv6.sin6_port); | |
a4d04587 | 1511 | else |
1512 | # endif /* AF_INET6 */ | |
f7deaa1a | 1513 | if (lis->address.addr.sa_family == AF_INET) |
1514 | portnum = ntohs(lis->address.ipv4.sin_port); | |
a4d04587 | 1515 | |
1516 | if (portnum == 443) | |
1517 | lis->encryption = HTTP_ENCRYPT_ALWAYS; | |
1518 | # endif /* HAVE_SSL */ | |
1519 | } | |
1520 | } | |
1521 | ||
a4d04587 | 1522 | launch_data_free(ld_msg); |
1523 | launch_data_free(ld_resp); | |
1524 | } | |
1525 | ||
1526 | ||
f7deaa1a | 1527 | /* |
1528 | * 'launchd_checkout()' - Update the launchd KeepAlive file as needed. | |
1529 | */ | |
1530 | ||
1531 | static void | |
1532 | launchd_checkout(void) | |
1533 | { | |
1534 | int fd; /* File descriptor */ | |
1535 | ||
1536 | ||
1537 | /* | |
1538 | * Create or remove the launchd KeepAlive file based on whether | |
1539 | * there are active jobs, polling, browsing for remote printers or | |
1540 | * shared printers to advertise... | |
1541 | */ | |
1542 | ||
1543 | if ((cupsArrayCount(ActiveJobs) || NumPolled || | |
1544 | (Browsing && | |
1545 | (BrowseRemoteProtocols || | |
1546 | (BrowseLocalProtocols && NumBrowsers && cupsArrayCount(Printers)))))) | |
1547 | { | |
1548 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1549 | "Creating launchd keepalive file \"" CUPS_KEEPALIVE "\"..."); | |
1550 | ||
1551 | if ((fd = open(CUPS_KEEPALIVE, O_RDONLY | O_CREAT | O_EXCL, S_IRUSR)) >= 0) | |
1552 | close(fd); | |
1553 | } | |
1554 | else | |
1555 | { | |
1556 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1557 | "Removing launchd keepalive file \"" CUPS_KEEPALIVE "\"..."); | |
1558 | ||
1559 | unlink(CUPS_KEEPALIVE); | |
1560 | } | |
1561 | } | |
a4d04587 | 1562 | #endif /* HAVE_LAUNCHD */ |
1563 | ||
1564 | ||
ef416fc2 | 1565 | /* |
1566 | * 'parent_handler()' - Catch USR1/CHLD signals... | |
1567 | */ | |
1568 | ||
1569 | static void | |
1570 | parent_handler(int sig) /* I - Signal */ | |
1571 | { | |
1572 | /* | |
1573 | * Store the signal we got from the OS and return... | |
1574 | */ | |
1575 | ||
1576 | parent_signal = sig; | |
1577 | } | |
1578 | ||
1579 | ||
1580 | /* | |
1581 | * 'process_children()' - Process all dead children... | |
1582 | */ | |
1583 | ||
1584 | static void | |
1585 | process_children(void) | |
1586 | { | |
1587 | int status; /* Exit status of child */ | |
1588 | int pid; /* Process ID of child */ | |
1589 | cupsd_job_t *job; /* Current job */ | |
1590 | int i; /* Looping var */ | |
e00b005a | 1591 | char name[1024]; /* Process name */ |
ef416fc2 | 1592 | |
1593 | ||
1594 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "process_children()"); | |
1595 | ||
1596 | /* | |
1597 | * Reset the dead_children flag... | |
1598 | */ | |
1599 | ||
1600 | dead_children = 0; | |
1601 | ||
1602 | /* | |
1603 | * Collect the exit status of some children... | |
1604 | */ | |
1605 | ||
1606 | #ifdef HAVE_WAITPID | |
1607 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) | |
1608 | #elif defined(HAVE_WAIT3) | |
1609 | while ((pid = wait3(&status, WNOHANG, NULL)) > 0) | |
1610 | #else | |
1611 | if ((pid = wait(&status)) > 0) | |
1612 | #endif /* HAVE_WAITPID */ | |
1613 | { | |
ef416fc2 | 1614 | /* |
d09495fa | 1615 | * Ignore SIGTERM errors - that comes when a job is canceled... |
ef416fc2 | 1616 | */ |
1617 | ||
e00b005a | 1618 | cupsdFinishProcess(pid, name, sizeof(name)); |
1619 | ||
ef416fc2 | 1620 | if (status == SIGTERM) |
1621 | status = 0; | |
1622 | ||
1623 | if (status) | |
1624 | { | |
1625 | if (WIFEXITED(status)) | |
e00b005a | 1626 | cupsdLogMessage(CUPSD_LOG_ERROR, "PID %d (%s) stopped with status %d!", |
1627 | pid, name, WEXITSTATUS(status)); | |
ef416fc2 | 1628 | else |
e00b005a | 1629 | cupsdLogMessage(CUPSD_LOG_ERROR, "PID %d (%s) crashed on signal %d!", |
1630 | pid, name, WTERMSIG(status)); | |
ef416fc2 | 1631 | |
1632 | if (LogLevel < CUPSD_LOG_DEBUG) | |
1633 | cupsdLogMessage(CUPSD_LOG_INFO, | |
bd7854cb | 1634 | "Hint: Try setting the LogLevel to \"debug\" to find " |
1635 | "out more."); | |
ef416fc2 | 1636 | } |
1637 | else | |
e00b005a | 1638 | cupsdLogMessage(CUPSD_LOG_DEBUG, "PID %d (%s) exited with no errors.", |
1639 | pid, name); | |
ef416fc2 | 1640 | |
1641 | /* | |
1642 | * Delete certificates for CGI processes... | |
1643 | */ | |
1644 | ||
1645 | if (pid) | |
1646 | cupsdDeleteCert(pid); | |
1647 | ||
1648 | /* | |
1649 | * Lookup the PID in the jobs list... | |
1650 | */ | |
1651 | ||
1652 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
1653 | job; | |
1654 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 1655 | if (job->state_value == IPP_JOB_PROCESSING) |
ef416fc2 | 1656 | { |
1657 | for (i = 0; job->filters[i]; i ++) | |
1658 | if (job->filters[i] == pid) | |
1659 | break; | |
1660 | ||
1661 | if (job->filters[i] || job->backend == pid) | |
1662 | { | |
1663 | /* | |
1664 | * OK, this process has gone away; what's left? | |
1665 | */ | |
1666 | ||
1667 | if (job->filters[i]) | |
1668 | job->filters[i] = -pid; | |
1669 | else | |
1670 | job->backend = -pid; | |
1671 | ||
1672 | if (status && job->status >= 0) | |
1673 | { | |
1674 | /* | |
1675 | * An error occurred; save the exit status so we know to stop | |
1676 | * the printer or cancel the job when all of the filters finish... | |
1677 | * | |
1678 | * A negative status indicates that the backend failed and the | |
1679 | * printer needs to be stopped. | |
1680 | */ | |
1681 | ||
1682 | if (job->filters[i]) | |
1683 | job->status = status; /* Filter failed */ | |
1684 | else | |
1685 | job->status = -status; /* Backend failed */ | |
e00b005a | 1686 | |
ac884b6a MS |
1687 | if (job->printer && !(job->printer->type & CUPS_PRINTER_FAX) && |
1688 | job->status_level > CUPSD_LOG_ERROR) | |
e00b005a | 1689 | { |
ac884b6a MS |
1690 | job->status_level = CUPSD_LOG_ERROR; |
1691 | ||
e00b005a | 1692 | snprintf(job->printer->state_message, |
1693 | sizeof(job->printer->state_message), "%s failed", name); | |
1694 | cupsdAddPrinterHistory(job->printer); | |
1695 | } | |
ef416fc2 | 1696 | } |
1697 | ||
1698 | /* | |
1699 | * If this is not the last file in a job, see if all of the | |
1700 | * filters are done, and if so move to the next file. | |
1701 | */ | |
1702 | ||
1703 | if (job->current_file < job->num_files) | |
1704 | { | |
1705 | for (i = 0; job->filters[i] < 0; i ++); | |
1706 | ||
1707 | if (!job->filters[i]) | |
1708 | { | |
1709 | /* | |
1710 | * Process the next file... | |
1711 | */ | |
1712 | ||
1713 | cupsdFinishJob(job); | |
1714 | } | |
1715 | } | |
1716 | break; | |
1717 | } | |
1718 | } | |
1719 | } | |
1720 | } | |
1721 | ||
1722 | ||
1723 | /* | |
1724 | * 'sigchld_handler()' - Handle 'child' signals from old processes. | |
1725 | */ | |
1726 | ||
1727 | static void | |
1728 | sigchld_handler(int sig) /* I - Signal number */ | |
1729 | { | |
1730 | (void)sig; | |
1731 | ||
1732 | /* | |
1733 | * Flag that we have dead children... | |
1734 | */ | |
1735 | ||
1736 | dead_children = 1; | |
1737 | ||
1738 | /* | |
1739 | * Reset the signal handler as needed... | |
1740 | */ | |
1741 | ||
1742 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1743 | signal(SIGCLD, sigchld_handler); | |
1744 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1745 | } | |
1746 | ||
1747 | ||
1748 | /* | |
1749 | * 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler. | |
1750 | */ | |
1751 | ||
1752 | static void | |
1753 | sighup_handler(int sig) /* I - Signal number */ | |
1754 | { | |
1755 | (void)sig; | |
1756 | ||
1757 | NeedReload = RELOAD_ALL; | |
1758 | ReloadTime = time(NULL); | |
1759 | ||
1760 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1761 | signal(SIGHUP, sighup_handler); | |
1762 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1763 | } | |
1764 | ||
1765 | ||
1766 | /* | |
1767 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler. | |
1768 | */ | |
1769 | ||
1770 | static void | |
1771 | sigterm_handler(int sig) /* I - Signal */ | |
1772 | { | |
1773 | (void)sig; /* remove compiler warnings... */ | |
1774 | ||
1775 | /* | |
1776 | * Flag that we should stop and return... | |
1777 | */ | |
1778 | ||
1779 | stop_scheduler = 1; | |
1780 | } | |
1781 | ||
1782 | ||
1783 | /* | |
1784 | * 'select_timeout()' - Calculate the select timeout value. | |
1785 | * | |
1786 | */ | |
1787 | ||
1788 | static long /* O - Number of seconds */ | |
bd7854cb | 1789 | select_timeout(int fds) /* I - Number of descriptors returned */ |
ef416fc2 | 1790 | { |
ef416fc2 | 1791 | long timeout; /* Timeout for select */ |
1792 | time_t now; /* Current time */ | |
1793 | cupsd_client_t *con; /* Client information */ | |
1794 | cupsd_printer_t *p; /* Printer information */ | |
1795 | cupsd_job_t *job; /* Job information */ | |
1796 | cupsd_subscription_t *sub; /* Subscription information */ | |
1797 | const char *why; /* Debugging aid */ | |
1798 | ||
1799 | ||
1800 | /* | |
1801 | * Check to see if any of the clients have pending data to be | |
1802 | * processed; if so, the timeout should be 0... | |
1803 | */ | |
1804 | ||
bd7854cb | 1805 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1806 | con; | |
1807 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1808 | if (con->http.used > 0) |
1809 | return (0); | |
1810 | ||
1811 | /* | |
f7deaa1a | 1812 | * If select has been active in the last second (fds > 0) or we have |
ef416fc2 | 1813 | * many resources in use then don't bother trying to optimize the |
1814 | * timeout, just make it 1 second. | |
1815 | */ | |
1816 | ||
f7deaa1a | 1817 | if (fds > 0 || cupsArrayCount(Clients) > 50) |
ef416fc2 | 1818 | return (1); |
1819 | ||
1820 | /* | |
1821 | * Otherwise, check all of the possible events that we need to wake for... | |
1822 | */ | |
1823 | ||
1824 | now = time(NULL); | |
1825 | timeout = now + 86400; /* 86400 == 1 day */ | |
1826 | why = "do nothing"; | |
1827 | ||
76cd9e37 MS |
1828 | /* |
1829 | * Check whether we are accepting new connections... | |
1830 | */ | |
1831 | ||
1832 | if (ListeningPaused > 0 && cupsArrayCount(Clients) < MaxClients && | |
1833 | ListeningPaused < timeout) | |
1834 | { | |
1835 | if (ListeningPaused <= now) | |
1836 | timeout = now; | |
1837 | else | |
1838 | timeout = ListeningPaused; | |
1839 | ||
1840 | why = "resume listening"; | |
1841 | } | |
1842 | ||
ef416fc2 | 1843 | /* |
1844 | * Check the activity and close old clients... | |
1845 | */ | |
1846 | ||
bd7854cb | 1847 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1848 | con; | |
1849 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1850 | if ((con->http.activity + Timeout) < timeout) |
1851 | { | |
1852 | timeout = con->http.activity + Timeout; | |
1853 | why = "timeout a client connection"; | |
1854 | } | |
1855 | ||
1856 | /* | |
1857 | * Update the browse list as needed... | |
1858 | */ | |
1859 | ||
1860 | if (Browsing && BrowseLocalProtocols) | |
1861 | { | |
1862 | #ifdef HAVE_LIBSLP | |
1863 | if ((BrowseLocalProtocols & BROWSE_SLP) && (BrowseSLPRefresh < timeout)) | |
1864 | { | |
1865 | timeout = BrowseSLPRefresh; | |
1866 | why = "update SLP browsing"; | |
1867 | } | |
1868 | #endif /* HAVE_LIBSLP */ | |
1869 | ||
b423cd4c | 1870 | #ifdef HAVE_LDAP |
1871 | if ((BrowseLocalProtocols & BROWSE_LDAP) && (BrowseLDAPRefresh < timeout)) | |
1872 | { | |
1873 | timeout = BrowseLDAPRefresh; | |
1874 | why = "update LDAP browsing"; | |
1875 | } | |
1876 | #endif /* HAVE_LDAP */ | |
1877 | ||
f7deaa1a | 1878 | if ((BrowseLocalProtocols & BROWSE_CUPS) && NumBrowsers) |
ef416fc2 | 1879 | { |
1880 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
1881 | p; | |
1882 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
1883 | { | |
1884 | if (p->type & CUPS_PRINTER_REMOTE) | |
1885 | { | |
1886 | if ((p->browse_time + BrowseTimeout) < timeout) | |
1887 | { | |
1888 | timeout = p->browse_time + BrowseTimeout; | |
1889 | why = "browse timeout a printer"; | |
1890 | } | |
1891 | } | |
f7deaa1a | 1892 | else if (p->shared && !(p->type & CUPS_PRINTER_IMPLICIT)) |
ef416fc2 | 1893 | { |
1894 | if (BrowseInterval && (p->browse_time + BrowseInterval) < timeout) | |
1895 | { | |
1896 | timeout = p->browse_time + BrowseInterval; | |
1897 | why = "send browse update"; | |
1898 | } | |
1899 | } | |
1900 | } | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | /* | |
1905 | * Check for any active jobs... | |
1906 | */ | |
1907 | ||
1908 | if (timeout > (now + 10) && ActiveJobs) | |
1909 | { | |
1910 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); | |
1911 | job; | |
1912 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
bd7854cb | 1913 | if (job->state_value <= IPP_JOB_PROCESSING) |
ef416fc2 | 1914 | { |
1915 | timeout = now + 10; | |
1916 | why = "process active jobs"; | |
1917 | break; | |
1918 | } | |
1919 | } | |
1920 | ||
1921 | #ifdef HAVE_MALLINFO | |
1922 | /* | |
1923 | * Log memory usage every minute... | |
1924 | */ | |
1925 | ||
1926 | if (LogLevel >= CUPSD_LOG_DEBUG && (mallinfo_time + 60) < timeout) | |
1927 | { | |
1928 | timeout = mallinfo_time + 60; | |
1929 | why = "display memory usage"; | |
1930 | } | |
1931 | #endif /* HAVE_MALLINFO */ | |
1932 | ||
ef416fc2 | 1933 | /* |
1934 | * Expire subscriptions as needed... | |
1935 | */ | |
1936 | ||
1937 | for (sub = (cupsd_subscription_t *)cupsArrayFirst(Subscriptions); | |
1938 | sub; | |
1939 | sub = (cupsd_subscription_t *)cupsArrayNext(Subscriptions)) | |
bd7854cb | 1940 | if (!sub->job && sub->expire && sub->expire < timeout) |
ef416fc2 | 1941 | { |
1942 | timeout = sub->expire; | |
1943 | why = "expire subscription"; | |
1944 | } | |
1945 | ||
1946 | /* | |
1947 | * Adjust from absolute to relative time. If p->browse_time above | |
1948 | * was 0 then we can end up with a negative value here, so check. | |
1949 | * We add 1 second to the timeout since events occur after the | |
1950 | * timeout expires, and limit the timeout to 86400 seconds (1 day) | |
1951 | * to avoid select() timeout limits present on some operating | |
1952 | * systems... | |
1953 | */ | |
1954 | ||
1955 | timeout = timeout - now + 1; | |
1956 | ||
1957 | if (timeout < 1) | |
1958 | timeout = 1; | |
1959 | else if (timeout > 86400) | |
1960 | timeout = 86400; | |
1961 | ||
1962 | /* | |
1963 | * Log and return the timeout value... | |
1964 | */ | |
1965 | ||
f7deaa1a | 1966 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout(%d): %ld seconds to %s", |
1967 | fds, timeout, why); | |
ef416fc2 | 1968 | |
1969 | return (timeout); | |
1970 | } | |
1971 | ||
1972 | ||
1973 | /* | |
1974 | * 'usage()' - Show scheduler usage. | |
1975 | */ | |
1976 | ||
1977 | static void | |
a4d04587 | 1978 | usage(int status) /* O - Exit status */ |
ef416fc2 | 1979 | { |
a4d04587 | 1980 | _cupsLangPuts(status ? stderr : stdout, |
1981 | _("Usage: cupsd [-c config-file] [-f] [-F] [-h] [-l]\n" | |
1982 | "\n" | |
1983 | "-c config-file Load alternate configuration file\n" | |
1984 | "-f Run in the foreground\n" | |
1985 | "-F Run in the foreground but detach\n" | |
1986 | "-h Show this usage message\n" | |
1987 | "-l Run cupsd from launchd(8)\n")); | |
1988 | exit(status); | |
ef416fc2 | 1989 | } |
1990 | ||
1991 | ||
1992 | /* | |
2e4ff8af | 1993 | * End of "$Id: main.c 6914 2007-09-05 21:05:04Z mike $". |
ef416fc2 | 1994 | */ |