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ef416fc2 | 1 | /* |
b19ccc9e | 2 | * "$Id: main.c 7925 2008-09-10 17:47:26Z mike $" |
ef416fc2 | 3 | * |
6d2f911b | 4 | * Main loop for the CUPS scheduler. |
ef416fc2 | 5 | * |
e60ec91f | 6 | * Copyright 2007-2011 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 | * | |
10d09e33 MS |
17 | * main() - Main entry for the CUPS scheduler. |
18 | * cupsdAddString() - Copy and add a string to an array. | |
19 | * cupsdCheckProcess() - Tell the main loop to check for dead children. | |
20 | * cupsdClearString() - Clear a string. | |
10d09e33 MS |
21 | * cupsdFreeStrings() - Free an array of strings. |
22 | * cupsdHoldSignals() - Hold child and termination signals. | |
10d09e33 MS |
23 | * cupsdReleaseSignals() - Release signals for delivery. |
24 | * cupsdSetString() - Set a string value. | |
25 | * cupsdSetStringf() - Set a formatted string value. | |
10d09e33 MS |
26 | * launchd_checkin() - Check-in with launchd and collect the listening |
27 | * fds. | |
28 | * launchd_checkout() - Update the launchd KeepAlive file as needed. | |
29 | * parent_handler() - Catch USR1/CHLD signals... | |
30 | * process_children() - Process all dead children... | |
31 | * select_timeout() - Calculate the select timeout value. | |
32 | * sigchld_handler() - Handle 'child' signals from old processes. | |
33 | * sighup_handler() - Handle 'hangup' signals to reconfigure the | |
34 | * scheduler. | |
35 | * sigterm_handler() - Handle 'terminate' signals that stop the scheduler. | |
36 | * usage() - Show scheduler usage. | |
ef416fc2 | 37 | */ |
38 | ||
39 | /* | |
40 | * Include necessary headers... | |
41 | */ | |
42 | ||
43 | #define _MAIN_C_ | |
44 | #include "cupsd.h" | |
45 | #include <sys/resource.h> | |
46 | #include <syslog.h> | |
47 | #include <grp.h> | |
48 | ||
a4d04587 | 49 | #ifdef HAVE_LAUNCH_H |
50 | # include <launch.h> | |
51 | # include <libgen.h> | |
ba55dc12 | 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 | |
72 | ||
73 | /* | |
74 | * Local functions... | |
75 | */ | |
76 | ||
a4d04587 | 77 | #ifdef HAVE_LAUNCHD |
411affcf | 78 | static void launchd_checkin(void); |
f7deaa1a | 79 | static void launchd_checkout(void); |
a4d04587 | 80 | #endif /* HAVE_LAUNCHD */ |
411affcf | 81 | static void parent_handler(int sig); |
82 | static void process_children(void); | |
83 | static void sigchld_handler(int sig); | |
84 | static void sighup_handler(int sig); | |
85 | static void sigterm_handler(int sig); | |
86 | static long select_timeout(int fds); | |
85dda01c | 87 | static void usage(int status) __attribute__((noreturn)); |
ef416fc2 | 88 | |
89 | ||
90 | /* | |
91 | * Local globals... | |
92 | */ | |
93 | ||
411affcf | 94 | static int parent_signal = 0; |
95 | /* Set to signal number from child */ | |
96 | static int holdcount = 0; /* Number of times "hold" was called */ | |
ef416fc2 | 97 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
411affcf | 98 | static sigset_t holdmask; /* Old POSIX signal mask */ |
ef416fc2 | 99 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ |
411affcf | 100 | static int dead_children = 0; |
101 | /* Dead children? */ | |
102 | static int stop_scheduler = 0; | |
103 | /* Should the scheduler stop? */ | |
104 | ||
ef416fc2 | 105 | |
106 | /* | |
107 | * 'main()' - Main entry for the CUPS scheduler. | |
108 | */ | |
109 | ||
110 | int /* O - Exit status */ | |
bd7854cb | 111 | main(int argc, /* I - Number of command-line args */ |
ef416fc2 | 112 | char *argv[]) /* I - Command-line arguments */ |
113 | { | |
114 | int i; /* Looping var */ | |
115 | char *opt; /* Option character */ | |
116 | int fg; /* Run in the foreground */ | |
bd7854cb | 117 | int fds; /* Number of ready descriptors */ |
ef416fc2 | 118 | cupsd_client_t *con; /* Current client */ |
119 | cupsd_job_t *job; /* Current job */ | |
120 | cupsd_listener_t *lis; /* Current listener */ | |
121 | time_t current_time, /* Current time */ | |
a4d04587 | 122 | activity, /* Client activity timer */ |
ef416fc2 | 123 | browse_time, /* Next browse send time */ |
124 | senddoc_time, /* Send-Document time */ | |
411affcf | 125 | expire_time, /* Subscription expire time */ |
50fe7201 | 126 | report_time, /* Malloc/client/job report time */ |
5a662dc0 | 127 | event_time; /* Last event notification time */ |
f7deaa1a | 128 | long timeout; /* Timeout for cupsdDoSelect() */ |
ef416fc2 | 129 | struct rlimit limit; /* Runtime limit */ |
130 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
131 | struct sigaction action; /* Actions for POSIX signals */ | |
132 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
133 | #ifdef __sgi | |
134 | cups_file_t *fp; /* Fake lpsched lock file */ | |
135 | struct stat statbuf; /* Needed for checking lpsched FIFO */ | |
136 | #endif /* __sgi */ | |
68b10830 MS |
137 | int run_as_child = 0; |
138 | /* Needed for background fork/exec */ | |
a41f09e2 | 139 | #ifdef __APPLE__ |
68b10830 | 140 | int use_sysman = !getuid(); |
d7871c8c | 141 | /* Use system management functions? */ |
a4924f6c MS |
142 | #else |
143 | time_t netif_time = 0; /* Time since last network update */ | |
a41f09e2 | 144 | #endif /* __APPLE__ */ |
a4d04587 | 145 | #if HAVE_LAUNCHD |
4400e98d | 146 | int launchd_idle_exit; |
a4d04587 | 147 | /* Idle exit on select timeout? */ |
148 | #endif /* HAVE_LAUNCHD */ | |
ef416fc2 | 149 | |
150 | ||
db1f069b MS |
151 | #ifdef HAVE_GETEUID |
152 | /* | |
153 | * Check for setuid invocation, which we do not support! | |
154 | */ | |
155 | ||
156 | if (getuid() != geteuid()) | |
157 | { | |
4d301e69 | 158 | fputs("cupsd: Cannot run as a setuid program\n", stderr); |
db1f069b MS |
159 | return (1); |
160 | } | |
161 | #endif /* HAVE_GETEUID */ | |
162 | ||
ef416fc2 | 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 | { | |
a41f09e2 MS |
182 | case 'C' : /* Run as child with config file */ |
183 | run_as_child = 1; | |
184 | fg = -1; | |
a41f09e2 | 185 | |
ef416fc2 | 186 | case 'c' : /* Configuration file */ |
187 | i ++; | |
188 | if (i >= argc) | |
a4d04587 | 189 | { |
190 | _cupsLangPuts(stderr, _("cupsd: Expected config filename " | |
0837b7e8 | 191 | "after \"-c\" option.")); |
a4d04587 | 192 | usage(1); |
193 | } | |
ef416fc2 | 194 | |
195 | if (argv[i][0] == '/') | |
196 | { | |
197 | /* | |
198 | * Absolute directory... | |
199 | */ | |
200 | ||
201 | cupsdSetString(&ConfigurationFile, argv[i]); | |
202 | } | |
203 | else | |
204 | { | |
205 | /* | |
206 | * Relative directory... | |
207 | */ | |
208 | ||
09ec0018 | 209 | char *current; /* Current directory */ |
ef416fc2 | 210 | |
211 | ||
09ec0018 | 212 | /* |
213 | * Allocate a buffer for the current working directory to | |
214 | * reduce run-time stack usage; this approximates the | |
215 | * behavior of some implementations of getcwd() when they | |
216 | * are passed a NULL pointer. | |
217 | */ | |
218 | ||
91c84a35 MS |
219 | if ((current = malloc(1024)) == NULL) |
220 | { | |
221 | _cupsLangPuts(stderr, | |
0837b7e8 | 222 | _("cupsd: Unable to get current directory.")); |
91c84a35 MS |
223 | return (1); |
224 | } | |
225 | ||
226 | if (!getcwd(current, 1024)) | |
227 | { | |
228 | _cupsLangPuts(stderr, | |
0837b7e8 | 229 | _("cupsd: Unable to get current directory.")); |
91c84a35 MS |
230 | free(current); |
231 | return (1); | |
232 | } | |
09ec0018 | 233 | |
ef416fc2 | 234 | cupsdSetStringf(&ConfigurationFile, "%s/%s", current, argv[i]); |
09ec0018 | 235 | free(current); |
ef416fc2 | 236 | } |
237 | break; | |
238 | ||
239 | case 'f' : /* Run in foreground... */ | |
240 | fg = 1; | |
241 | break; | |
242 | ||
bd7854cb | 243 | case 'F' : /* Run in foreground, but disconnect from terminal... */ |
ef416fc2 | 244 | fg = -1; |
245 | break; | |
246 | ||
a4d04587 | 247 | case 'h' : /* Show usage/help */ |
248 | usage(0); | |
249 | break; | |
250 | ||
251 | case 'l' : /* Started by launchd... */ | |
252 | #ifdef HAVE_LAUNCHD | |
4400e98d | 253 | Launchd = 1; |
a4d04587 | 254 | fg = 1; |
255 | #else | |
256 | _cupsLangPuts(stderr, _("cupsd: launchd(8) support not compiled " | |
0837b7e8 | 257 | "in, running in normal mode.")); |
a4d04587 | 258 | fg = 0; |
259 | #endif /* HAVE_LAUNCHD */ | |
260 | break; | |
261 | ||
a74454a7 | 262 | case 'p' : /* Stop immediately for profiling */ |
5a662dc0 MS |
263 | fputs("cupsd: -p (startup profiling) is for internal testing " |
264 | "use only!\n", stderr); | |
a74454a7 | 265 | stop_scheduler = 1; |
266 | fg = 1; | |
267 | break; | |
268 | ||
1340db2d | 269 | case 'P' : /* Disable security profiles */ |
5a662dc0 MS |
270 | fputs("cupsd: -P (disable security profiles) is for internal " |
271 | "testing use only!\n", stderr); | |
1340db2d MS |
272 | UseProfiles = 0; |
273 | break; | |
274 | ||
68b10830 MS |
275 | #ifdef __APPLE__ |
276 | case 'S' : /* Disable system management functions */ | |
5a662dc0 MS |
277 | fputs("cupsd: -S (disable system management) for internal " |
278 | "testing use only!\n", stderr); | |
68b10830 MS |
279 | use_sysman = 0; |
280 | break; | |
281 | #endif /* __APPLE__ */ | |
282 | ||
2e4ff8af MS |
283 | case 't' : /* Test the cupsd.conf file... */ |
284 | TestConfigFile = 1; | |
285 | fg = 1; | |
286 | break; | |
287 | ||
ef416fc2 | 288 | default : /* Unknown option */ |
a4d04587 | 289 | _cupsLangPrintf(stderr, _("cupsd: Unknown option \"%c\" - " |
0837b7e8 | 290 | "aborting."), *opt); |
a4d04587 | 291 | usage(1); |
ef416fc2 | 292 | break; |
293 | } | |
294 | else | |
295 | { | |
0837b7e8 | 296 | _cupsLangPrintf(stderr, _("cupsd: Unknown argument \"%s\" - aborting."), |
a4d04587 | 297 | argv[i]); |
298 | usage(1); | |
ef416fc2 | 299 | } |
300 | ||
301 | if (!ConfigurationFile) | |
302 | cupsdSetString(&ConfigurationFile, CUPS_SERVERROOT "/cupsd.conf"); | |
303 | ||
304 | /* | |
305 | * If the user hasn't specified "-f", run in the background... | |
306 | */ | |
307 | ||
308 | if (!fg) | |
309 | { | |
310 | /* | |
311 | * Setup signal handlers for the parent... | |
312 | */ | |
313 | ||
314 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
315 | sigset(SIGUSR1, parent_handler); | |
316 | sigset(SIGCHLD, parent_handler); | |
317 | ||
318 | sigset(SIGHUP, SIG_IGN); | |
319 | #elif defined(HAVE_SIGACTION) | |
320 | memset(&action, 0, sizeof(action)); | |
321 | sigemptyset(&action.sa_mask); | |
322 | sigaddset(&action.sa_mask, SIGUSR1); | |
323 | action.sa_handler = parent_handler; | |
324 | sigaction(SIGUSR1, &action, NULL); | |
325 | sigaction(SIGCHLD, &action, NULL); | |
326 | ||
327 | sigemptyset(&action.sa_mask); | |
328 | action.sa_handler = SIG_IGN; | |
329 | sigaction(SIGHUP, &action, NULL); | |
330 | #else | |
331 | signal(SIGUSR1, parent_handler); | |
332 | signal(SIGCLD, parent_handler); | |
333 | ||
334 | signal(SIGHUP, SIG_IGN); | |
335 | #endif /* HAVE_SIGSET */ | |
336 | ||
337 | if (fork() > 0) | |
338 | { | |
339 | /* | |
340 | * OK, wait for the child to startup and send us SIGUSR1 or to crash | |
341 | * and the OS send us SIGCHLD... We also need to ignore SIGHUP which | |
342 | * might be sent by the init script to restart the scheduler... | |
343 | */ | |
344 | ||
345 | for (; parent_signal == 0;) | |
346 | sleep(1); | |
347 | ||
348 | if (parent_signal == SIGUSR1) | |
349 | return (0); | |
350 | ||
351 | if (wait(&i) < 0) | |
352 | { | |
353 | perror("cupsd"); | |
354 | return (1); | |
355 | } | |
356 | else if (WIFEXITED(i)) | |
357 | { | |
4d301e69 | 358 | fprintf(stderr, "cupsd: Child exited with status %d\n", |
bd7854cb | 359 | WEXITSTATUS(i)); |
ef416fc2 | 360 | return (2); |
361 | } | |
362 | else | |
363 | { | |
4d301e69 | 364 | fprintf(stderr, "cupsd: Child exited on signal %d\n", WTERMSIG(i)); |
ef416fc2 | 365 | return (3); |
366 | } | |
367 | } | |
a41f09e2 | 368 | |
68b10830 MS |
369 | #ifdef __OpenBSD__ |
370 | /* | |
371 | * Call _thread_sys_closefrom() so the child process doesn't reset the | |
372 | * parent's file descriptors to be blocking. This is a workaround for a | |
373 | * limitation of userland libpthread on OpenBSD. | |
374 | */ | |
ef55b745 | 375 | |
68b10830 MS |
376 | _thread_sys_closefrom(0); |
377 | #endif /* __OpenBSD__ */ | |
378 | ||
a41f09e2 | 379 | /* |
68b10830 MS |
380 | * Since CoreFoundation and DBUS both create fork-unsafe data on execution of |
381 | * a program, and since this kind of really unfriendly behavior seems to be | |
382 | * more common these days in system libraries, we need to re-execute the | |
383 | * background cupsd with the "-C" option to avoid problems. Unfortunately, | |
384 | * we also have to assume that argv[0] contains the name of the cupsd | |
385 | * executable - there is no portable way to get the real pathname... | |
a41f09e2 MS |
386 | */ |
387 | ||
388 | execlp(argv[0], argv[0], "-C", ConfigurationFile, (char *)0); | |
389 | exit(errno); | |
ef416fc2 | 390 | } |
391 | ||
392 | if (fg < 1) | |
393 | { | |
394 | /* | |
395 | * Make sure we aren't tying up any filesystems... | |
396 | */ | |
397 | ||
398 | chdir("/"); | |
399 | ||
400 | #ifndef DEBUG | |
401 | /* | |
402 | * Disable core dumps... | |
403 | */ | |
404 | ||
405 | getrlimit(RLIMIT_CORE, &limit); | |
406 | limit.rlim_cur = 0; | |
407 | setrlimit(RLIMIT_CORE, &limit); | |
408 | ||
409 | /* | |
410 | * Disconnect from the controlling terminal... | |
411 | */ | |
412 | ||
413 | setsid(); | |
414 | ||
415 | /* | |
416 | * Close all open files... | |
417 | */ | |
418 | ||
419 | getrlimit(RLIMIT_NOFILE, &limit); | |
420 | ||
b94498cf | 421 | for (i = 0; i < limit.rlim_cur && i < 1024; i ++) |
ef416fc2 | 422 | close(i); |
a4924f6c MS |
423 | |
424 | /* | |
425 | * Redirect stdin/out/err to /dev/null... | |
426 | */ | |
427 | ||
68b10830 MS |
428 | if ((i = open("/dev/null", O_RDONLY)) != 0) |
429 | { | |
430 | dup2(i, 0); | |
431 | close(i); | |
432 | } | |
433 | ||
434 | if ((i = open("/dev/null", O_WRONLY)) != 1) | |
435 | { | |
436 | dup2(i, 1); | |
437 | close(i); | |
438 | } | |
439 | ||
440 | if ((i = open("/dev/null", O_WRONLY)) != 2) | |
441 | { | |
442 | dup2(i, 2); | |
443 | close(i); | |
444 | } | |
ef416fc2 | 445 | #endif /* DEBUG */ |
446 | } | |
447 | ||
448 | /* | |
449 | * Set the timezone info... | |
450 | */ | |
451 | ||
452 | tzset(); | |
453 | ||
454 | #ifdef LC_TIME | |
455 | setlocale(LC_TIME, ""); | |
456 | #endif /* LC_TIME */ | |
457 | ||
458 | /* | |
459 | * Set the maximum number of files... | |
460 | */ | |
461 | ||
462 | getrlimit(RLIMIT_NOFILE, &limit); | |
463 | ||
f7deaa1a | 464 | #if !defined(HAVE_POLL) && !defined(HAVE_EPOLL) && !defined(HAVE_KQUEUE) |
f7faf1f5 | 465 | if (limit.rlim_max > FD_SETSIZE) |
466 | MaxFDs = FD_SETSIZE; | |
ef416fc2 | 467 | else |
f7deaa1a | 468 | #endif /* !HAVE_POLL && !HAVE_EPOLL && !HAVE_KQUEUE */ |
469 | #ifdef RLIM_INFINITY | |
470 | if (limit.rlim_max == RLIM_INFINITY) | |
471 | MaxFDs = 16384; | |
472 | else | |
473 | #endif /* RLIM_INFINITY */ | |
ef416fc2 | 474 | MaxFDs = limit.rlim_max; |
475 | ||
476 | limit.rlim_cur = MaxFDs; | |
477 | ||
478 | setrlimit(RLIMIT_NOFILE, &limit); | |
479 | ||
f7deaa1a | 480 | cupsdStartSelect(); |
ef416fc2 | 481 | |
482 | /* | |
483 | * Read configuration... | |
484 | */ | |
485 | ||
486 | if (!cupsdReadConfiguration()) | |
487 | { | |
2e4ff8af MS |
488 | if (TestConfigFile) |
489 | printf("%s contains errors\n", ConfigurationFile); | |
490 | else | |
491 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
492 | ConfigurationFile); | |
ef416fc2 | 493 | return (1); |
494 | } | |
2e4ff8af MS |
495 | else if (TestConfigFile) |
496 | { | |
497 | printf("%s is OK\n", ConfigurationFile); | |
498 | return (0); | |
499 | } | |
ef416fc2 | 500 | |
ba55dc12 MS |
501 | /* |
502 | * Clean out old temp files and printer cache data. | |
503 | */ | |
cc0d019f | 504 | |
ba55dc12 | 505 | if (!strncmp(TempDir, RequestRoot, strlen(RequestRoot))) |
321d8d57 | 506 | cupsdCleanFiles(TempDir, NULL); |
cc0d019f | 507 | |
321d8d57 | 508 | cupsdCleanFiles(CacheDir, "*.ipp"); |
cc0d019f | 509 | |
a4d04587 | 510 | #if HAVE_LAUNCHD |
4400e98d | 511 | if (Launchd) |
a4d04587 | 512 | { |
513 | /* | |
b94498cf | 514 | * If we were started by launchd get the listen sockets file descriptors... |
f7deaa1a | 515 | */ |
a4d04587 | 516 | |
517 | launchd_checkin(); | |
e4572d57 | 518 | launchd_checkout(); |
a4d04587 | 519 | } |
520 | #endif /* HAVE_LAUNCHD */ | |
521 | ||
522 | /* | |
523 | * Startup the server... | |
524 | */ | |
525 | ||
6d2f911b MS |
526 | httpInitialize(); |
527 | ||
a4d04587 | 528 | cupsdStartServer(); |
529 | ||
ef416fc2 | 530 | /* |
531 | * Catch hangup and child signals and ignore broken pipes... | |
532 | */ | |
533 | ||
534 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
e1d6a774 | 535 | sigset(SIGCHLD, sigchld_handler); |
4744bd90 | 536 | sigset(SIGHUP, sighup_handler); |
ef416fc2 | 537 | sigset(SIGPIPE, SIG_IGN); |
538 | sigset(SIGTERM, sigterm_handler); | |
539 | #elif defined(HAVE_SIGACTION) | |
540 | memset(&action, 0, sizeof(action)); | |
541 | ||
e1d6a774 | 542 | sigemptyset(&action.sa_mask); |
543 | sigaddset(&action.sa_mask, SIGTERM); | |
544 | sigaddset(&action.sa_mask, SIGCHLD); | |
545 | action.sa_handler = sigchld_handler; | |
546 | sigaction(SIGCHLD, &action, NULL); | |
547 | ||
ef416fc2 | 548 | sigemptyset(&action.sa_mask); |
549 | sigaddset(&action.sa_mask, SIGHUP); | |
4744bd90 | 550 | action.sa_handler = sighup_handler; |
ef416fc2 | 551 | sigaction(SIGHUP, &action, NULL); |
552 | ||
553 | sigemptyset(&action.sa_mask); | |
554 | action.sa_handler = SIG_IGN; | |
555 | sigaction(SIGPIPE, &action, NULL); | |
556 | ||
557 | sigemptyset(&action.sa_mask); | |
558 | sigaddset(&action.sa_mask, SIGTERM); | |
559 | sigaddset(&action.sa_mask, SIGCHLD); | |
560 | action.sa_handler = sigterm_handler; | |
561 | sigaction(SIGTERM, &action, NULL); | |
562 | #else | |
e1d6a774 | 563 | signal(SIGCLD, sigchld_handler); /* No, SIGCLD isn't a typo... */ |
4744bd90 | 564 | signal(SIGHUP, sighup_handler); |
ef416fc2 | 565 | signal(SIGPIPE, SIG_IGN); |
566 | signal(SIGTERM, sigterm_handler); | |
567 | #endif /* HAVE_SIGSET */ | |
568 | ||
569 | #ifdef __sgi | |
570 | /* | |
571 | * Try to create a fake lpsched lock file if one is not already there. | |
572 | * Some Adobe applications need it under IRIX in order to enable | |
573 | * printing... | |
574 | */ | |
575 | ||
576 | if ((fp = cupsFileOpen("/var/spool/lp/SCHEDLOCK", "w")) == NULL) | |
577 | { | |
578 | syslog(LOG_LPR, "Unable to create fake lpsched lock file " | |
579 | "\"/var/spool/lp/SCHEDLOCK\"\' - %s!", | |
580 | strerror(errno)); | |
581 | } | |
582 | else | |
583 | { | |
584 | fchmod(cupsFileNumber(fp), 0644); | |
585 | fchown(cupsFileNumber(fp), User, Group); | |
586 | ||
587 | cupsFileClose(fp); | |
588 | } | |
589 | #endif /* __sgi */ | |
590 | ||
591 | /* | |
592 | * Initialize authentication certificates... | |
593 | */ | |
594 | ||
595 | cupsdInitCerts(); | |
596 | ||
597 | /* | |
598 | * If we are running in the background, signal the parent process that | |
599 | * we are up and running... | |
600 | */ | |
601 | ||
a41f09e2 | 602 | if (!fg || run_as_child) |
ef416fc2 | 603 | { |
604 | /* | |
605 | * Send a signal to the parent process, but only if the parent is | |
606 | * not PID 1 (init). This avoids accidentally shutting down the | |
607 | * system on OpenBSD if you CTRL-C the server before it is up... | |
608 | */ | |
609 | ||
610 | i = getppid(); /* Save parent PID to avoid race condition */ | |
611 | ||
612 | if (i != 1) | |
613 | kill(i, SIGUSR1); | |
614 | } | |
615 | ||
e1d6a774 | 616 | #ifdef __APPLE__ |
09ec0018 | 617 | /* |
618 | * Start power management framework... | |
619 | */ | |
620 | ||
1340db2d MS |
621 | if (use_sysman) |
622 | cupsdStartSystemMonitor(); | |
e1d6a774 | 623 | #endif /* __APPLE__ */ |
ef416fc2 | 624 | |
49d87452 MS |
625 | /* |
626 | * Send server-started event... | |
627 | */ | |
628 | ||
629 | #ifdef HAVE_LAUNCHD | |
630 | if (Launchd) | |
631 | cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, | |
632 | "Scheduler started via launchd."); | |
633 | else | |
634 | #endif /* HAVE_LAUNCHD */ | |
635 | if (fg) | |
636 | cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, | |
637 | "Scheduler started in foreground."); | |
638 | else | |
639 | cupsdAddEvent(CUPSD_EVENT_SERVER_STARTED, NULL, NULL, | |
640 | "Scheduler started in background."); | |
641 | ||
ef416fc2 | 642 | /* |
643 | * Start any pending print jobs... | |
644 | */ | |
645 | ||
646 | cupsdCheckJobs(); | |
647 | ||
648 | /* | |
649 | * Loop forever... | |
650 | */ | |
651 | ||
50fe7201 MS |
652 | current_time = time(NULL); |
653 | browse_time = current_time; | |
654 | event_time = current_time; | |
655 | expire_time = current_time; | |
ef416fc2 | 656 | fds = 1; |
5bd77a73 | 657 | report_time = 0; |
50fe7201 | 658 | senddoc_time = current_time; |
ef416fc2 | 659 | |
660 | while (!stop_scheduler) | |
661 | { | |
ef416fc2 | 662 | /* |
663 | * Check if there are dead children to handle... | |
664 | */ | |
665 | ||
666 | if (dead_children) | |
667 | process_children(); | |
668 | ||
669 | /* | |
670 | * Check if we need to load the server configuration file... | |
671 | */ | |
672 | ||
673 | if (NeedReload) | |
674 | { | |
675 | /* | |
676 | * Close any idle clients... | |
677 | */ | |
678 | ||
bd7854cb | 679 | if (cupsArrayCount(Clients) > 0) |
ef416fc2 | 680 | { |
bd7854cb | 681 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
682 | con; | |
683 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 684 | if (con->http.state == HTTP_WAITING) |
ef416fc2 | 685 | cupsdCloseClient(con); |
ef416fc2 | 686 | else |
687 | con->http.keep_alive = HTTP_KEEPALIVE_OFF; | |
688 | ||
689 | cupsdPauseListening(); | |
690 | } | |
691 | ||
ef416fc2 | 692 | /* |
693 | * Restart if all clients are closed and all jobs finished, or | |
694 | * if the reload timeout has elapsed... | |
695 | */ | |
696 | ||
bd7854cb | 697 | if ((cupsArrayCount(Clients) == 0 && |
238c3832 | 698 | (cupsArrayCount(PrintingJobs) == 0 || NeedReload != RELOAD_ALL)) || |
ef416fc2 | 699 | (time(NULL) - ReloadTime) >= ReloadTimeout) |
700 | { | |
a4d04587 | 701 | /* |
702 | * Shutdown the server... | |
703 | */ | |
704 | ||
7cf5915e MS |
705 | DoingShutdown = 1; |
706 | ||
a4d04587 | 707 | cupsdStopServer(); |
708 | ||
709 | /* | |
710 | * Read configuration... | |
711 | */ | |
712 | ||
ef416fc2 | 713 | if (!cupsdReadConfiguration()) |
714 | { | |
715 | syslog(LOG_LPR, "Unable to read configuration file \'%s\' - exiting!", | |
716 | ConfigurationFile); | |
717 | break; | |
718 | } | |
a4d04587 | 719 | |
720 | #if HAVE_LAUNCHD | |
4400e98d | 721 | if (Launchd) |
a4d04587 | 722 | { |
b94498cf | 723 | /* |
5a662dc0 MS |
724 | * If we were started by launchd, get the listen socket file |
725 | * descriptors... | |
b94498cf | 726 | */ |
727 | ||
a4d04587 | 728 | launchd_checkin(); |
e4572d57 | 729 | launchd_checkout(); |
a4d04587 | 730 | } |
731 | #endif /* HAVE_LAUNCHD */ | |
732 | ||
733 | /* | |
734 | * Startup the server... | |
735 | */ | |
736 | ||
7cf5915e MS |
737 | DoingShutdown = 0; |
738 | ||
a4d04587 | 739 | cupsdStartServer(); |
49d87452 MS |
740 | |
741 | /* | |
742 | * Send a server-restarted event... | |
743 | */ | |
744 | ||
745 | cupsdAddEvent(CUPSD_EVENT_SERVER_RESTARTED, NULL, NULL, | |
746 | "Scheduler restarted."); | |
ef416fc2 | 747 | } |
748 | } | |
749 | ||
750 | /* | |
f7deaa1a | 751 | * Check for available input or ready output. If cupsdDoSelect() |
752 | * returns 0 or -1, something bad happened and we should exit | |
753 | * immediately. | |
ef416fc2 | 754 | * |
755 | * Note that we at least have one listening socket open at all | |
756 | * times. | |
757 | */ | |
758 | ||
50fe7201 MS |
759 | if ((timeout = select_timeout(fds)) > 1 && LastEvent) |
760 | timeout = 1; | |
ef416fc2 | 761 | |
a4d04587 | 762 | #if HAVE_LAUNCHD |
763 | /* | |
764 | * If no other work is scheduled and we're being controlled by | |
411affcf | 765 | * launchd then timeout after 'LaunchdTimeout' seconds of |
a4d04587 | 766 | * inactivity... |
767 | */ | |
768 | ||
a2326b5b | 769 | if (timeout == 86400 && Launchd && LaunchdTimeout && |
bc44d920 | 770 | !cupsArrayCount(ActiveJobs) && |
a2326b5b | 771 | (!Browsing || !BrowseLocalProtocols || !cupsArrayCount(Printers))) |
a4d04587 | 772 | { |
f7deaa1a | 773 | timeout = LaunchdTimeout; |
a4d04587 | 774 | launchd_idle_exit = 1; |
775 | } | |
776 | else | |
777 | launchd_idle_exit = 0; | |
778 | #endif /* HAVE_LAUNCHD */ | |
779 | ||
f7deaa1a | 780 | if ((fds = cupsdDoSelect(timeout)) < 0) |
ef416fc2 | 781 | { |
ef416fc2 | 782 | /* |
783 | * Got an error from select! | |
784 | */ | |
785 | ||
f7deaa1a | 786 | #ifdef HAVE_DNSSD |
787 | cupsd_printer_t *p; /* Current printer */ | |
788 | #endif /* HAVE_DNSSD */ | |
789 | ||
790 | ||
791 | if (errno == EINTR) /* Just interrupted by a signal */ | |
ef416fc2 | 792 | continue; |
793 | ||
794 | /* | |
795 | * Log all sorts of debug info to help track down the problem. | |
796 | */ | |
797 | ||
f7deaa1a | 798 | cupsdLogMessage(CUPSD_LOG_EMERG, "cupsdDoSelect() failed - %s!", |
ef416fc2 | 799 | strerror(errno)); |
800 | ||
bd7854cb | 801 | for (i = 0, con = (cupsd_client_t *)cupsArrayFirst(Clients); |
802 | con; | |
803 | i ++, con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 804 | cupsdLogMessage(CUPSD_LOG_EMERG, |
805 | "Clients[%d] = %d, file = %d, state = %d", | |
806 | i, con->http.fd, con->file, con->http.state); | |
807 | ||
bd7854cb | 808 | for (i = 0, lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
809 | lis; | |
810 | i ++, lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
ef416fc2 | 811 | cupsdLogMessage(CUPSD_LOG_EMERG, "Listeners[%d] = %d", i, lis->fd); |
812 | ||
923edb68 | 813 | cupsdLogMessage(CUPSD_LOG_EMERG, "CGIPipes[0] = %d", CGIPipes[0]); |
814 | ||
09ec0018 | 815 | #ifdef __APPLE__ |
816 | cupsdLogMessage(CUPSD_LOG_EMERG, "SysEventPipes[0] = %d", | |
817 | SysEventPipes[0]); | |
818 | #endif /* __APPLE__ */ | |
819 | ||
ef416fc2 | 820 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); |
821 | job; | |
822 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
823 | cupsdLogMessage(CUPSD_LOG_EMERG, "Jobs[%d] = %d < [%d %d] > [%d %d]", | |
824 | job->id, | |
825 | job->status_buffer ? job->status_buffer->fd : -1, | |
826 | job->print_pipes[0], job->print_pipes[1], | |
827 | job->back_pipes[0], job->back_pipes[1]); | |
f7deaa1a | 828 | |
829 | #ifdef HAVE_DNSSD | |
830 | for (p = (cupsd_printer_t *)cupsArrayFirst(Printers); | |
831 | p; | |
832 | p = (cupsd_printer_t *)cupsArrayNext(Printers)) | |
7a14d768 MS |
833 | cupsdLogMessage(CUPSD_LOG_EMERG, "printer[%s] reg_name=\"%s\"", p->name, |
834 | p->reg_name ? p->reg_name : "(null)"); | |
f7deaa1a | 835 | #endif /* HAVE_DNSSD */ |
836 | ||
ef416fc2 | 837 | break; |
838 | } | |
839 | ||
840 | current_time = time(NULL); | |
841 | ||
3dfe78b3 MS |
842 | /* |
843 | * Write dirty config/state files... | |
844 | */ | |
845 | ||
846 | if (DirtyCleanTime && current_time >= DirtyCleanTime) | |
3dfe78b3 | 847 | cupsdCleanDirty(); |
3dfe78b3 | 848 | |
e6013cfa MS |
849 | #ifdef __APPLE__ |
850 | /* | |
851 | * If we are going to sleep and still have pending jobs, stop them after | |
852 | * a period of time... | |
853 | */ | |
854 | ||
855 | if (SleepJobs > 0 && current_time >= SleepJobs && | |
856 | cupsArrayCount(PrintingJobs) > 0) | |
857 | { | |
858 | SleepJobs = 0; | |
e60ec91f | 859 | cupsdStopAllJobs(CUPSD_JOB_DEFAULT, 5); |
e6013cfa MS |
860 | } |
861 | #endif /* __APPLE__ */ | |
862 | ||
a4924f6c MS |
863 | #ifndef __APPLE__ |
864 | /* | |
865 | * Update the network interfaces once a minute... | |
866 | */ | |
867 | ||
868 | if ((current_time - netif_time) >= 60) | |
869 | { | |
870 | netif_time = current_time; | |
871 | NetIFUpdate = 1; | |
872 | } | |
873 | #endif /* !__APPLE__ */ | |
874 | ||
a4d04587 | 875 | #if HAVE_LAUNCHD |
876 | /* | |
411affcf | 877 | * If no other work was scheduled and we're being controlled by launchd |
a4d04587 | 878 | * then timeout after 'LaunchdTimeout' seconds of inactivity... |
879 | */ | |
880 | ||
881 | if (!fds && launchd_idle_exit) | |
882 | { | |
883 | cupsdLogMessage(CUPSD_LOG_INFO, | |
884 | "Printer sharing is off and there are no jobs pending, " | |
885 | "will restart on demand."); | |
886 | stop_scheduler = 1; | |
887 | break; | |
888 | } | |
889 | #endif /* HAVE_LAUNCHD */ | |
890 | ||
76cd9e37 MS |
891 | /* |
892 | * Resume listening for new connections as needed... | |
893 | */ | |
894 | ||
895 | if (ListeningPaused && ListeningPaused <= current_time && | |
896 | cupsArrayCount(Clients) < MaxClients) | |
897 | cupsdResumeListening(); | |
898 | ||
ef416fc2 | 899 | /* |
bd7854cb | 900 | * Expire subscriptions and unload completed jobs as needed... |
ef416fc2 | 901 | */ |
902 | ||
bd7854cb | 903 | if (current_time > expire_time) |
ef416fc2 | 904 | { |
bd7854cb | 905 | if (cupsArrayCount(Subscriptions) > 0) |
906 | cupsdExpireSubscriptions(NULL, NULL); | |
907 | ||
908 | cupsdUnloadCompletedJobs(); | |
ef416fc2 | 909 | |
910 | expire_time = current_time; | |
911 | } | |
912 | ||
07ed0e9a | 913 | #ifndef HAVE_AUTHORIZATION_H |
ef416fc2 | 914 | /* |
f7deaa1a | 915 | * Update the root certificate once every 5 minutes if we have client |
916 | * connections... | |
ef416fc2 | 917 | */ |
918 | ||
f7deaa1a | 919 | if ((current_time - RootCertTime) >= RootCertDuration && RootCertDuration && |
920 | !RunUser && cupsArrayCount(Clients)) | |
921 | { | |
922 | /* | |
923 | * Update the root certificate... | |
924 | */ | |
925 | ||
926 | cupsdDeleteCert(0); | |
5bd77a73 | 927 | cupsdAddCert(0, "root", NULL); |
f7deaa1a | 928 | } |
07ed0e9a | 929 | #endif /* !HAVE_AUTHORIZATION_H */ |
ef416fc2 | 930 | |
931 | /* | |
932 | * Check for new data on the client sockets... | |
933 | */ | |
934 | ||
bd7854cb | 935 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
936 | con; | |
937 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 938 | { |
939 | /* | |
f7deaa1a | 940 | * Process pending data in the input buffer... |
ef416fc2 | 941 | */ |
942 | ||
f7deaa1a | 943 | if (con->http.used) |
ef416fc2 | 944 | { |
f7deaa1a | 945 | cupsdReadClient(con); |
946 | continue; | |
ef416fc2 | 947 | } |
948 | ||
949 | /* | |
950 | * Check the activity and close old clients... | |
951 | */ | |
952 | ||
953 | activity = current_time - Timeout; | |
954 | if (con->http.activity < activity && !con->pipe_pid) | |
955 | { | |
956 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
957 | "Closing client %d after %d seconds of inactivity...", | |
958 | con->http.fd, Timeout); | |
959 | ||
960 | cupsdCloseClient(con); | |
ef416fc2 | 961 | continue; |
962 | } | |
963 | } | |
964 | ||
965 | /* | |
966 | * Update any pending multi-file documents... | |
967 | */ | |
968 | ||
969 | if ((current_time - senddoc_time) >= 10) | |
970 | { | |
971 | cupsdCheckJobs(); | |
ef55b745 | 972 | cupsdCleanJobs(); |
ef416fc2 | 973 | senddoc_time = current_time; |
974 | } | |
975 | ||
ef416fc2 | 976 | /* |
5bd77a73 | 977 | * Log statistics at most once a minute when in debug mode... |
ef416fc2 | 978 | */ |
979 | ||
5bd77a73 | 980 | if ((current_time - report_time) >= 60 && LogLevel >= CUPSD_LOG_DEBUG) |
ef416fc2 | 981 | { |
5bd77a73 MS |
982 | size_t string_count, /* String count */ |
983 | alloc_bytes, /* Allocated string bytes */ | |
984 | total_bytes; /* Total string bytes */ | |
4400e98d | 985 | #ifdef HAVE_MALLINFO |
5bd77a73 | 986 | struct mallinfo mem; /* Malloc information */ |
ef416fc2 | 987 | |
988 | ||
989 | mem = mallinfo(); | |
5bd77a73 MS |
990 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-arena=%lu", mem.arena); |
991 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-used=%lu", | |
992 | mem.usmblks + mem.uordblks); | |
993 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: malloc-free=%lu", | |
ef416fc2 | 994 | mem.fsmblks + mem.fordblks); |
4400e98d | 995 | #endif /* HAVE_MALLINFO */ |
996 | ||
5bd77a73 MS |
997 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: clients=%d", |
998 | cupsArrayCount(Clients)); | |
999 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs=%d", | |
1000 | cupsArrayCount(Jobs)); | |
1001 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: jobs-active=%d", | |
1002 | cupsArrayCount(ActiveJobs)); | |
1003 | cupsdLogMessage(CUPSD_LOG_DEBUG, "Report: printers=%d", | |
1004 | cupsArrayCount(Printers)); | |
5bd77a73 | 1005 | |
757d2cad | 1006 | string_count = _cupsStrStatistics(&alloc_bytes, &total_bytes); |
5bd77a73 MS |
1007 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
1008 | "Report: stringpool-string-count=" CUPS_LLFMT, | |
1009 | CUPS_LLCAST string_count); | |
1010 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1011 | "Report: stringpool-alloc-bytes=" CUPS_LLFMT, | |
1012 | CUPS_LLCAST alloc_bytes); | |
1013 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1014 | "Report: stringpool-total-bytes=" CUPS_LLFMT, | |
4400e98d | 1015 | CUPS_LLCAST total_bytes); |
1016 | ||
5bd77a73 | 1017 | report_time = current_time; |
ef416fc2 | 1018 | } |
ef416fc2 | 1019 | |
fa73b229 | 1020 | /* |
1021 | * Handle OS-specific event notification for any events that have | |
1022 | * accumulated. Don't send these more than once a second... | |
1023 | */ | |
1024 | ||
50fe7201 | 1025 | if (LastEvent && (current_time - event_time) >= 1) |
fa73b229 | 1026 | { |
1027 | #ifdef HAVE_NOTIFY_POST | |
a41f09e2 MS |
1028 | if (LastEvent & (CUPSD_EVENT_PRINTER_ADDED | |
1029 | CUPSD_EVENT_PRINTER_DELETED | | |
1030 | CUPSD_EVENT_PRINTER_MODIFIED)) | |
fa73b229 | 1031 | { |
e00b005a | 1032 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 1033 | "notify_post(\"com.apple.printerListChange\")"); |
1034 | notify_post("com.apple.printerListChange"); | |
1035 | } | |
1036 | ||
1037 | if (LastEvent & CUPSD_EVENT_PRINTER_STATE_CHANGED) | |
1038 | { | |
e00b005a | 1039 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 1040 | "notify_post(\"com.apple.printerHistoryChange\")"); |
1041 | notify_post("com.apple.printerHistoryChange"); | |
1042 | } | |
1043 | ||
1044 | if (LastEvent & (CUPSD_EVENT_JOB_STATE_CHANGED | | |
1045 | CUPSD_EVENT_JOB_CONFIG_CHANGED | | |
1046 | CUPSD_EVENT_JOB_PROGRESS)) | |
1047 | { | |
e00b005a | 1048 | cupsdLogMessage(CUPSD_LOG_DEBUG2, |
fa73b229 | 1049 | "notify_post(\"com.apple.jobChange\")"); |
1050 | notify_post("com.apple.jobChange"); | |
1051 | } | |
1052 | #endif /* HAVE_NOTIFY_POST */ | |
1053 | ||
1054 | /* | |
e53920b9 | 1055 | * Reset the accumulated events... |
fa73b229 | 1056 | */ |
1057 | ||
50fe7201 MS |
1058 | LastEvent = CUPSD_EVENT_NONE; |
1059 | event_time = current_time; | |
fa73b229 | 1060 | } |
ef416fc2 | 1061 | } |
1062 | ||
1063 | /* | |
1064 | * Log a message based on what happened... | |
1065 | */ | |
1066 | ||
1067 | if (stop_scheduler) | |
49d87452 | 1068 | { |
ef416fc2 | 1069 | cupsdLogMessage(CUPSD_LOG_INFO, "Scheduler shutting down normally."); |
49d87452 MS |
1070 | cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED, NULL, NULL, |
1071 | "Scheduler shutting down normally."); | |
1072 | } | |
ef416fc2 | 1073 | else |
49d87452 | 1074 | { |
ef416fc2 | 1075 | cupsdLogMessage(CUPSD_LOG_ERROR, |
1076 | "Scheduler shutting down due to program error."); | |
49d87452 MS |
1077 | cupsdAddEvent(CUPSD_EVENT_SERVER_STOPPED, NULL, NULL, |
1078 | "Scheduler shutting down due to program error."); | |
1079 | } | |
ef416fc2 | 1080 | |
1081 | /* | |
7ff4fea9 | 1082 | * Close all network clients... |
ef416fc2 | 1083 | */ |
1084 | ||
7cf5915e MS |
1085 | DoingShutdown = 1; |
1086 | ||
ef416fc2 | 1087 | cupsdStopServer(); |
1088 | ||
7ff4fea9 MS |
1089 | #ifdef HAVE_LAUNCHD |
1090 | /* | |
1091 | * Update the launchd KeepAlive file as needed... | |
1092 | */ | |
1093 | ||
1094 | if (Launchd) | |
1095 | launchd_checkout(); | |
1096 | #endif /* HAVE_LAUNCHD */ | |
1097 | ||
1098 | /* | |
1099 | * Stop all jobs... | |
1100 | */ | |
1101 | ||
bd7854cb | 1102 | cupsdFreeAllJobs(); |
ef416fc2 | 1103 | |
e1d6a774 | 1104 | #ifdef __APPLE__ |
7ff4fea9 MS |
1105 | /* |
1106 | * Stop monitoring system event monitoring... | |
1107 | */ | |
1108 | ||
1340db2d MS |
1109 | if (use_sysman) |
1110 | cupsdStopSystemMonitor(); | |
e1d6a774 | 1111 | #endif /* __APPLE__ */ |
09ec0018 | 1112 | |
c24d2134 | 1113 | #ifdef HAVE_GSSAPI |
7ff4fea9 MS |
1114 | /* |
1115 | * Free the scheduler's Kerberos context... | |
1116 | */ | |
1117 | ||
c24d2134 MS |
1118 | # ifdef __APPLE__ |
1119 | /* | |
1120 | * If the weak-linked GSSAPI/Kerberos library is not present, don't try | |
1121 | * to use it... | |
1122 | */ | |
1123 | ||
1124 | if (krb5_init_context != NULL) | |
1125 | # endif /* __APPLE__ */ | |
a41f09e2 MS |
1126 | if (KerberosContext) |
1127 | krb5_free_context(KerberosContext); | |
c24d2134 MS |
1128 | #endif /* HAVE_GSSAPI */ |
1129 | ||
ef416fc2 | 1130 | #ifdef __sgi |
1131 | /* | |
1132 | * Remove the fake IRIX lpsched lock file, but only if the existing | |
1133 | * file is not a FIFO which indicates that the real IRIX lpsched is | |
1134 | * running... | |
1135 | */ | |
1136 | ||
1137 | if (!stat("/var/spool/lp/FIFO", &statbuf)) | |
1138 | if (!S_ISFIFO(statbuf.st_mode)) | |
1139 | unlink("/var/spool/lp/SCHEDLOCK"); | |
1140 | #endif /* __sgi */ | |
1141 | ||
f7deaa1a | 1142 | cupsdStopSelect(); |
ef416fc2 | 1143 | |
1144 | return (!stop_scheduler); | |
1145 | } | |
1146 | ||
1147 | ||
10d09e33 MS |
1148 | /* |
1149 | * 'cupsdAddString()' - Copy and add a string to an array. | |
1150 | */ | |
1151 | ||
1152 | int /* O - 1 on success, 0 on failure */ | |
1153 | cupsdAddString(cups_array_t **a, /* IO - String array */ | |
1154 | const char *s) /* I - String to copy and add */ | |
1155 | { | |
1156 | if (!*a) | |
1157 | *a = cupsArrayNew3((cups_array_func_t)strcmp, NULL, | |
1158 | (cups_ahash_func_t)NULL, 0, | |
1159 | (cups_acopy_func_t)_cupsStrAlloc, | |
1160 | (cups_afree_func_t)_cupsStrFree); | |
1161 | ||
1162 | return (cupsArrayAdd(*a, (char *)s)); | |
1163 | } | |
1164 | ||
1165 | ||
d7871c8c MS |
1166 | /* |
1167 | * 'cupsdCheckProcess()' - Tell the main loop to check for dead children. | |
1168 | */ | |
1169 | ||
1170 | void | |
1171 | cupsdCheckProcess(void) | |
1172 | { | |
1173 | /* | |
1174 | * Flag that we have dead children... | |
1175 | */ | |
1176 | ||
1177 | dead_children = 1; | |
1178 | } | |
1179 | ||
1180 | ||
10d09e33 MS |
1181 | /* |
1182 | * 'cupsdClearString()' - Clear a string. | |
1183 | */ | |
1184 | ||
1185 | void | |
1186 | cupsdClearString(char **s) /* O - String value */ | |
1187 | { | |
1188 | if (s && *s) | |
1189 | { | |
1190 | _cupsStrFree(*s); | |
1191 | *s = NULL; | |
1192 | } | |
1193 | } | |
1194 | ||
1195 | ||
10d09e33 MS |
1196 | /* |
1197 | * 'cupsdFreeStrings()' - Free an array of strings. | |
1198 | */ | |
1199 | ||
1200 | void | |
1201 | cupsdFreeStrings(cups_array_t **a) /* IO - String array */ | |
1202 | { | |
1203 | if (*a) | |
1204 | { | |
1205 | cupsArrayDelete(*a); | |
1206 | *a = NULL; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | ||
1211 | /* | |
1212 | * 'cupsdHoldSignals()' - Hold child and termination signals. | |
1213 | */ | |
1214 | ||
1215 | void | |
1216 | cupsdHoldSignals(void) | |
1217 | { | |
1218 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
1219 | sigset_t newmask; /* New POSIX signal mask */ | |
1220 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
1221 | ||
1222 | ||
1223 | holdcount ++; | |
1224 | if (holdcount > 1) | |
1225 | return; | |
1226 | ||
1227 | #ifdef HAVE_SIGSET | |
1228 | sighold(SIGTERM); | |
1229 | sighold(SIGCHLD); | |
1230 | #elif defined(HAVE_SIGACTION) | |
1231 | sigemptyset(&newmask); | |
1232 | sigaddset(&newmask, SIGTERM); | |
1233 | sigaddset(&newmask, SIGCHLD); | |
1234 | sigprocmask(SIG_BLOCK, &newmask, &holdmask); | |
1235 | #endif /* HAVE_SIGSET */ | |
1236 | } | |
1237 | ||
1238 | ||
ef416fc2 | 1239 | /* |
1240 | * 'cupsdReleaseSignals()' - Release signals for delivery. | |
1241 | */ | |
1242 | ||
1243 | void | |
1244 | cupsdReleaseSignals(void) | |
1245 | { | |
1246 | holdcount --; | |
1247 | if (holdcount > 0) | |
1248 | return; | |
1249 | ||
1250 | #ifdef HAVE_SIGSET | |
1251 | sigrelse(SIGTERM); | |
1252 | sigrelse(SIGCHLD); | |
1253 | #elif defined(HAVE_SIGACTION) | |
1254 | sigprocmask(SIG_SETMASK, &holdmask, NULL); | |
1255 | #endif /* HAVE_SIGSET */ | |
1256 | } | |
1257 | ||
1258 | ||
1259 | /* | |
1260 | * 'cupsdSetString()' - Set a string value. | |
1261 | */ | |
1262 | ||
1263 | void | |
1264 | cupsdSetString(char **s, /* O - New string */ | |
1265 | const char *v) /* I - String value */ | |
1266 | { | |
1267 | if (!s || *s == v) | |
1268 | return; | |
1269 | ||
1270 | if (*s) | |
e53920b9 | 1271 | _cupsStrFree(*s); |
ef416fc2 | 1272 | |
1273 | if (v) | |
e53920b9 | 1274 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1275 | else |
1276 | *s = NULL; | |
1277 | } | |
1278 | ||
1279 | ||
1280 | /* | |
1281 | * 'cupsdSetStringf()' - Set a formatted string value. | |
1282 | */ | |
1283 | ||
1284 | void | |
1285 | cupsdSetStringf(char **s, /* O - New string */ | |
1286 | const char *f, /* I - Printf-style format string */ | |
1287 | ...) /* I - Additional args as needed */ | |
1288 | { | |
1289 | char v[4096]; /* Formatting string value */ | |
1290 | va_list ap; /* Argument pointer */ | |
1291 | char *olds; /* Old string */ | |
1292 | ||
1293 | ||
1294 | if (!s) | |
1295 | return; | |
1296 | ||
1297 | olds = *s; | |
1298 | ||
1299 | if (f) | |
1300 | { | |
1301 | va_start(ap, f); | |
1302 | vsnprintf(v, sizeof(v), f, ap); | |
1303 | va_end(ap); | |
1304 | ||
e53920b9 | 1305 | *s = _cupsStrAlloc(v); |
ef416fc2 | 1306 | } |
1307 | else | |
1308 | *s = NULL; | |
1309 | ||
1310 | if (olds) | |
e53920b9 | 1311 | _cupsStrFree(olds); |
ef416fc2 | 1312 | } |
1313 | ||
1314 | ||
a4d04587 | 1315 | #ifdef HAVE_LAUNCHD |
1316 | /* | |
1317 | * 'launchd_checkin()' - Check-in with launchd and collect the listening fds. | |
1318 | */ | |
1319 | ||
1320 | static void | |
1321 | launchd_checkin(void) | |
1322 | { | |
06d4e77b | 1323 | size_t i, /* Looping var */ |
f8b3a85b | 1324 | count; /* Number of listeners */ |
a4d04587 | 1325 | launch_data_t ld_msg, /* Launch data message */ |
1326 | ld_resp, /* Launch data response */ | |
1327 | ld_array, /* Launch data array */ | |
1328 | ld_sockets, /* Launch data sockets dictionary */ | |
a4d04587 | 1329 | tmp; /* Launch data */ |
1330 | cupsd_listener_t *lis; /* Listeners array */ | |
1331 | http_addr_t addr; /* Address variable */ | |
1332 | socklen_t addrlen; /* Length of address */ | |
f7deaa1a | 1333 | int fd; /* File descriptor */ |
1334 | char s[256]; /* String addresss */ | |
a4d04587 | 1335 | |
1336 | ||
1337 | cupsdLogMessage(CUPSD_LOG_DEBUG, "launchd_checkin: pid=%d", (int)getpid()); | |
1338 | ||
1339 | /* | |
1340 | * Check-in with launchd... | |
1341 | */ | |
1342 | ||
1343 | ld_msg = launch_data_new_string(LAUNCH_KEY_CHECKIN); | |
1344 | if ((ld_resp = launch_msg(ld_msg)) == NULL) | |
1345 | { | |
bd7854cb | 1346 | cupsdLogMessage(CUPSD_LOG_ERROR, |
a4d04587 | 1347 | "launchd_checkin: launch_msg(\"" LAUNCH_KEY_CHECKIN |
1348 | "\") IPC failure"); | |
1349 | exit(EXIT_FAILURE); | |
749b1e90 | 1350 | return; /* anti-compiler-warning */ |
a4d04587 | 1351 | } |
bd7854cb | 1352 | |
a4d04587 | 1353 | if (launch_data_get_type(ld_resp) == LAUNCH_DATA_ERRNO) |
1354 | { | |
1355 | errno = launch_data_get_errno(ld_resp); | |
1356 | cupsdLogMessage(CUPSD_LOG_ERROR, "launchd_checkin: Check-in failed: %s", | |
1357 | strerror(errno)); | |
1358 | exit(EXIT_FAILURE); | |
749b1e90 | 1359 | return; /* anti-compiler-warning */ |
a4d04587 | 1360 | } |
1361 | ||
a4d04587 | 1362 | /* |
1363 | * Get the sockets dictionary... | |
1364 | */ | |
1365 | ||
749b1e90 MS |
1366 | if ((ld_sockets = launch_data_dict_lookup(ld_resp, LAUNCH_JOBKEY_SOCKETS)) |
1367 | == NULL) | |
a4d04587 | 1368 | { |
1369 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1370 | "launchd_checkin: No sockets found to answer requests on!"); | |
1371 | exit(EXIT_FAILURE); | |
749b1e90 | 1372 | return; /* anti-compiler-warning */ |
a4d04587 | 1373 | } |
bd7854cb | 1374 | |
a4d04587 | 1375 | /* |
1376 | * Get the array of listener sockets... | |
1377 | */ | |
1378 | ||
749b1e90 | 1379 | if ((ld_array = launch_data_dict_lookup(ld_sockets, "Listeners")) == NULL) |
a4d04587 | 1380 | { |
1381 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1382 | "launchd_checkin: No sockets found to answer requests on!"); | |
1383 | exit(EXIT_FAILURE); | |
749b1e90 | 1384 | return; /* anti-compiler-warning */ |
a4d04587 | 1385 | } |
1386 | ||
1387 | /* | |
1388 | * Add listening fd(s) to the Listener array... | |
1389 | */ | |
1390 | ||
1391 | if (launch_data_get_type(ld_array) == LAUNCH_DATA_ARRAY) | |
1392 | { | |
f7deaa1a | 1393 | count = launch_data_array_get_count(ld_array); |
bd7854cb | 1394 | |
1395 | for (i = 0; i < count; i ++) | |
a4d04587 | 1396 | { |
1397 | /* | |
f7deaa1a | 1398 | * Get the launchd file descriptor and address... |
a4d04587 | 1399 | */ |
bd7854cb | 1400 | |
749b1e90 | 1401 | if ((tmp = launch_data_array_get_index(ld_array, i)) != NULL) |
bd7854cb | 1402 | { |
749b1e90 MS |
1403 | fd = launch_data_get_fd(tmp); |
1404 | addrlen = sizeof(addr); | |
bd7854cb | 1405 | |
749b1e90 MS |
1406 | if (getsockname(fd, (struct sockaddr *)&addr, &addrlen)) |
1407 | { | |
1408 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
1409 | "launchd_checkin: Unable to get local address - %s", | |
1410 | strerror(errno)); | |
1411 | continue; | |
1412 | } | |
bd7854cb | 1413 | |
749b1e90 MS |
1414 | /* |
1415 | * Try to match the launchd socket address to one of the listeners... | |
1416 | */ | |
f7deaa1a | 1417 | |
749b1e90 MS |
1418 | for (lis = (cupsd_listener_t *)cupsArrayFirst(Listeners); |
1419 | lis; | |
1420 | lis = (cupsd_listener_t *)cupsArrayNext(Listeners)) | |
1421 | if (httpAddrEqual(&lis->address, &addr)) | |
1422 | break; | |
a4d04587 | 1423 | |
749b1e90 MS |
1424 | /* |
1425 | * Add a new listener If there's no match... | |
1426 | */ | |
f7deaa1a | 1427 | |
749b1e90 MS |
1428 | if (lis) |
1429 | { | |
ef55b745 | 1430 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
749b1e90 MS |
1431 | "launchd_checkin: Matched existing listener %s with fd %d...", |
1432 | httpAddrString(&(lis->address), s, sizeof(s)), fd); | |
1433 | } | |
1434 | else | |
1435 | { | |
ef55b745 | 1436 | cupsdLogMessage(CUPSD_LOG_DEBUG, |
749b1e90 MS |
1437 | "launchd_checkin: Adding new listener %s with fd %d...", |
1438 | httpAddrString(&addr, s, sizeof(s)), fd); | |
f7deaa1a | 1439 | |
749b1e90 MS |
1440 | if ((lis = calloc(1, sizeof(cupsd_listener_t))) == NULL) |
1441 | { | |
1442 | cupsdLogMessage(CUPSD_LOG_ERROR, | |
5a662dc0 MS |
1443 | "launchd_checkin: Unable to allocate listener - " |
1444 | "%s.", strerror(errno)); | |
749b1e90 MS |
1445 | exit(EXIT_FAILURE); |
1446 | } | |
f7deaa1a | 1447 | |
749b1e90 | 1448 | cupsArrayAdd(Listeners, lis); |
bd7854cb | 1449 | |
749b1e90 MS |
1450 | memcpy(&lis->address, &addr, sizeof(lis->address)); |
1451 | } | |
1452 | ||
1453 | lis->fd = fd; | |
f7deaa1a | 1454 | |
a4d04587 | 1455 | # ifdef HAVE_SSL |
22c9029b | 1456 | if (_httpAddrPort(&(lis->address)) == 443) |
749b1e90 | 1457 | lis->encryption = HTTP_ENCRYPT_ALWAYS; |
a4d04587 | 1458 | # endif /* HAVE_SSL */ |
749b1e90 | 1459 | } |
a4d04587 | 1460 | } |
1461 | } | |
1462 | ||
a4d04587 | 1463 | launch_data_free(ld_msg); |
1464 | launch_data_free(ld_resp); | |
1465 | } | |
1466 | ||
1467 | ||
f7deaa1a | 1468 | /* |
1469 | * 'launchd_checkout()' - Update the launchd KeepAlive file as needed. | |
1470 | */ | |
1471 | ||
1472 | static void | |
1473 | launchd_checkout(void) | |
1474 | { | |
1475 | int fd; /* File descriptor */ | |
1476 | ||
1477 | ||
1478 | /* | |
1479 | * Create or remove the launchd KeepAlive file based on whether | |
ef55b745 | 1480 | * there are active jobs, polling, browsing for remote printers or |
f7deaa1a | 1481 | * shared printers to advertise... |
1482 | */ | |
1483 | ||
a2326b5b MS |
1484 | if (cupsArrayCount(ActiveJobs) || |
1485 | (Browsing && BrowseLocalProtocols && cupsArrayCount(Printers))) | |
f7deaa1a | 1486 | { |
1487 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
5a662dc0 MS |
1488 | "Creating launchd keepalive file \"" CUPS_KEEPALIVE |
1489 | "\"..."); | |
f7deaa1a | 1490 | |
1491 | if ((fd = open(CUPS_KEEPALIVE, O_RDONLY | O_CREAT | O_EXCL, S_IRUSR)) >= 0) | |
1492 | close(fd); | |
1493 | } | |
1494 | else | |
1495 | { | |
1496 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
5a662dc0 MS |
1497 | "Removing launchd keepalive file \"" CUPS_KEEPALIVE |
1498 | "\"..."); | |
f7deaa1a | 1499 | |
1500 | unlink(CUPS_KEEPALIVE); | |
1501 | } | |
1502 | } | |
a4d04587 | 1503 | #endif /* HAVE_LAUNCHD */ |
1504 | ||
1505 | ||
ef416fc2 | 1506 | /* |
1507 | * 'parent_handler()' - Catch USR1/CHLD signals... | |
1508 | */ | |
1509 | ||
1510 | static void | |
1511 | parent_handler(int sig) /* I - Signal */ | |
1512 | { | |
1513 | /* | |
1514 | * Store the signal we got from the OS and return... | |
1515 | */ | |
1516 | ||
1517 | parent_signal = sig; | |
1518 | } | |
1519 | ||
1520 | ||
1521 | /* | |
1522 | * 'process_children()' - Process all dead children... | |
1523 | */ | |
1524 | ||
1525 | static void | |
1526 | process_children(void) | |
1527 | { | |
1528 | int status; /* Exit status of child */ | |
b9faaae1 MS |
1529 | int pid, /* Process ID of child */ |
1530 | job_id; /* Job ID of child */ | |
ef416fc2 | 1531 | cupsd_job_t *job; /* Current job */ |
1532 | int i; /* Looping var */ | |
e00b005a | 1533 | char name[1024]; /* Process name */ |
ef416fc2 | 1534 | |
1535 | ||
1536 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "process_children()"); | |
1537 | ||
1538 | /* | |
1539 | * Reset the dead_children flag... | |
1540 | */ | |
1541 | ||
1542 | dead_children = 0; | |
1543 | ||
1544 | /* | |
1545 | * Collect the exit status of some children... | |
1546 | */ | |
1547 | ||
1548 | #ifdef HAVE_WAITPID | |
1549 | while ((pid = waitpid(-1, &status, WNOHANG)) > 0) | |
1550 | #elif defined(HAVE_WAIT3) | |
1551 | while ((pid = wait3(&status, WNOHANG, NULL)) > 0) | |
1552 | #else | |
1553 | if ((pid = wait(&status)) > 0) | |
1554 | #endif /* HAVE_WAITPID */ | |
1555 | { | |
ef416fc2 | 1556 | /* |
745129be | 1557 | * Collect the name of the process that finished... |
ef416fc2 | 1558 | */ |
1559 | ||
b9faaae1 | 1560 | cupsdFinishProcess(pid, name, sizeof(name), &job_id); |
e00b005a | 1561 | |
ef416fc2 | 1562 | /* |
1563 | * Delete certificates for CGI processes... | |
1564 | */ | |
1565 | ||
1566 | if (pid) | |
1567 | cupsdDeleteCert(pid); | |
1568 | ||
1569 | /* | |
b9faaae1 | 1570 | * Handle completed job filters... |
ef416fc2 | 1571 | */ |
1572 | ||
b9faaae1 MS |
1573 | if (job_id > 0 && (job = cupsdFindJob(job_id)) != NULL) |
1574 | { | |
1575 | for (i = 0; job->filters[i]; i ++) | |
1576 | if (job->filters[i] == pid) | |
1577 | break; | |
1578 | ||
1579 | if (job->filters[i] || job->backend == pid) | |
ef416fc2 | 1580 | { |
b9faaae1 MS |
1581 | /* |
1582 | * OK, this process has gone away; what's left? | |
1583 | */ | |
1584 | ||
1585 | if (job->filters[i]) | |
1586 | job->filters[i] = -pid; | |
1587 | else | |
1588 | job->backend = -pid; | |
ef416fc2 | 1589 | |
b9faaae1 | 1590 | if (status && status != SIGTERM && status != SIGKILL && |
5a6b583a | 1591 | status != SIGPIPE && job->status >= 0) |
ef416fc2 | 1592 | { |
1593 | /* | |
b9faaae1 MS |
1594 | * An error occurred; save the exit status so we know to stop |
1595 | * the printer or cancel the job when all of the filters finish... | |
1596 | * | |
1597 | * A negative status indicates that the backend failed and the | |
1598 | * printer needs to be stopped. | |
ef416fc2 | 1599 | */ |
1600 | ||
b9faaae1 MS |
1601 | if (job->filters[i]) |
1602 | job->status = status; /* Filter failed */ | |
ef416fc2 | 1603 | else |
b9faaae1 | 1604 | job->status = -status; /* Backend failed */ |
ef416fc2 | 1605 | |
f11a948a MS |
1606 | if (job->state_value == IPP_JOB_PROCESSING && |
1607 | job->status_level > CUPSD_LOG_ERROR) | |
ef416fc2 | 1608 | { |
f11a948a MS |
1609 | char message[1024]; /* New printer-state-message */ |
1610 | ||
1611 | ||
b9faaae1 | 1612 | job->status_level = CUPSD_LOG_ERROR; |
ef416fc2 | 1613 | |
f11a948a MS |
1614 | snprintf(message, sizeof(message), "%s failed", name); |
1615 | ||
e07d4801 MS |
1616 | if (job->printer) |
1617 | { | |
f11a948a MS |
1618 | strlcpy(job->printer->state_message, message, |
1619 | sizeof(job->printer->state_message)); | |
e07d4801 MS |
1620 | } |
1621 | ||
1622 | if (!job->attrs) | |
1623 | cupsdLoadJob(job); | |
e00b005a | 1624 | |
e07d4801 | 1625 | if (!job->printer_message && job->attrs) |
e00b005a | 1626 | { |
b9faaae1 MS |
1627 | if ((job->printer_message = |
1628 | ippFindAttribute(job->attrs, "job-printer-state-message", | |
1629 | IPP_TAG_TEXT)) == NULL) | |
1630 | job->printer_message = ippAddString(job->attrs, IPP_TAG_JOB, | |
1631 | IPP_TAG_TEXT, | |
1632 | "job-printer-state-message", | |
5a662dc0 | 1633 | NULL, NULL); |
e00b005a | 1634 | } |
b9faaae1 | 1635 | |
e07d4801 MS |
1636 | if (job->printer_message) |
1637 | cupsdSetString(&(job->printer_message->values[0].string.text), | |
f11a948a | 1638 | message); |
ef416fc2 | 1639 | } |
b9faaae1 | 1640 | } |
ef416fc2 | 1641 | |
b9faaae1 MS |
1642 | /* |
1643 | * If this is not the last file in a job, see if all of the | |
1644 | * filters are done, and if so move to the next file. | |
1645 | */ | |
ef416fc2 | 1646 | |
5a662dc0 | 1647 | if (job->current_file < job->num_files && job->printer) |
b9faaae1 MS |
1648 | { |
1649 | for (i = 0; job->filters[i] < 0; i ++); | |
ef416fc2 | 1650 | |
82f97232 MS |
1651 | if (!job->filters[i] && |
1652 | (!job->printer->pc || !job->printer->pc->single_file || | |
1653 | job->backend <= 0)) | |
b9faaae1 MS |
1654 | { |
1655 | /* | |
1656 | * Process the next file... | |
1657 | */ | |
ef416fc2 | 1658 | |
b9faaae1 | 1659 | cupsdContinueJob(job); |
ef416fc2 | 1660 | } |
ef416fc2 | 1661 | } |
5a662dc0 | 1662 | else if (job->state_value >= IPP_JOB_CANCELED) |
7a0cbd5e MS |
1663 | { |
1664 | /* | |
1665 | * Remove the job from the active list if there are no processes still | |
1666 | * running for it... | |
1667 | */ | |
1668 | ||
1669 | for (i = 0; job->filters[i] < 0; i++); | |
1670 | ||
1671 | if (!job->filters[i] && job->backend <= 0) | |
1672 | cupsArrayRemove(ActiveJobs, job); | |
1673 | } | |
ef416fc2 | 1674 | } |
b9faaae1 | 1675 | } |
3dfe78b3 MS |
1676 | |
1677 | /* | |
745129be MS |
1678 | * Show the exit status as needed, ignoring SIGTERM and SIGKILL errors |
1679 | * since they come when we kill/end a process... | |
3dfe78b3 MS |
1680 | */ |
1681 | ||
745129be MS |
1682 | if (status == SIGTERM || status == SIGKILL) |
1683 | { | |
1684 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1685 | "PID %d (%s) was terminated normally with signal %d.", | |
1686 | pid, name, status); | |
1687 | } | |
5a6b583a MS |
1688 | else if (status == SIGPIPE) |
1689 | { | |
1690 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1691 | "PID %d (%s) did not catch or ignore signal %d.", | |
1692 | pid, name, status); | |
1693 | } | |
745129be | 1694 | else if (status) |
3dfe78b3 MS |
1695 | { |
1696 | if (WIFEXITED(status)) | |
88f9aafc MS |
1697 | { |
1698 | int code = WEXITSTATUS(status); /* Exit code */ | |
1699 | ||
1700 | if (code > 100) | |
1701 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1702 | "PID %d (%s) stopped with status %d (%s)", pid, name, | |
1703 | code, strerror(code - 100)); | |
1704 | else | |
1705 | cupsdLogMessage(CUPSD_LOG_DEBUG, | |
1706 | "PID %d (%s) stopped with status %d.", pid, name, | |
1707 | code); | |
1708 | } | |
3dfe78b3 | 1709 | else |
88f9aafc | 1710 | cupsdLogMessage(CUPSD_LOG_ERROR, "PID %d (%s) crashed on signal %d.", |
3dfe78b3 MS |
1711 | pid, name, WTERMSIG(status)); |
1712 | ||
1713 | if (LogLevel < CUPSD_LOG_DEBUG) | |
1714 | cupsdLogMessage(CUPSD_LOG_INFO, | |
1715 | "Hint: Try setting the LogLevel to \"debug\" to find " | |
1716 | "out more."); | |
1717 | } | |
1718 | else | |
1719 | cupsdLogMessage(CUPSD_LOG_DEBUG, "PID %d (%s) exited with no errors.", | |
1720 | pid, name); | |
ef416fc2 | 1721 | } |
dfd5680b MS |
1722 | |
1723 | /* | |
1724 | * If wait*() is interrupted by a signal, tell main() to call us again... | |
1725 | */ | |
1726 | ||
1727 | if (pid < 0 && errno == EINTR) | |
1728 | dead_children = 1; | |
ef416fc2 | 1729 | } |
1730 | ||
1731 | ||
ef416fc2 | 1732 | /* |
1733 | * 'select_timeout()' - Calculate the select timeout value. | |
1734 | * | |
1735 | */ | |
1736 | ||
1737 | static long /* O - Number of seconds */ | |
bd7854cb | 1738 | select_timeout(int fds) /* I - Number of descriptors returned */ |
ef416fc2 | 1739 | { |
ef416fc2 | 1740 | long timeout; /* Timeout for select */ |
1741 | time_t now; /* Current time */ | |
1742 | cupsd_client_t *con; /* Client information */ | |
ef416fc2 | 1743 | cupsd_job_t *job; /* Job information */ |
1744 | cupsd_subscription_t *sub; /* Subscription information */ | |
1745 | const char *why; /* Debugging aid */ | |
1746 | ||
1747 | ||
1748 | /* | |
1749 | * Check to see if any of the clients have pending data to be | |
1750 | * processed; if so, the timeout should be 0... | |
1751 | */ | |
1752 | ||
bd7854cb | 1753 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1754 | con; | |
1755 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1756 | if (con->http.used > 0) |
1757 | return (0); | |
1758 | ||
1759 | /* | |
f7deaa1a | 1760 | * If select has been active in the last second (fds > 0) or we have |
ef416fc2 | 1761 | * many resources in use then don't bother trying to optimize the |
1762 | * timeout, just make it 1 second. | |
1763 | */ | |
1764 | ||
f7deaa1a | 1765 | if (fds > 0 || cupsArrayCount(Clients) > 50) |
ef416fc2 | 1766 | return (1); |
1767 | ||
1768 | /* | |
1769 | * Otherwise, check all of the possible events that we need to wake for... | |
1770 | */ | |
1771 | ||
1772 | now = time(NULL); | |
1773 | timeout = now + 86400; /* 86400 == 1 day */ | |
1774 | why = "do nothing"; | |
1775 | ||
e6013cfa MS |
1776 | #ifdef __APPLE__ |
1777 | /* | |
1778 | * When going to sleep, wake up to cancel jobs that don't complete in time. | |
1779 | */ | |
1780 | ||
1781 | if (SleepJobs > 0 && SleepJobs < timeout) | |
1782 | { | |
1783 | timeout = SleepJobs; | |
1784 | why = "cancel jobs before sleeping"; | |
1785 | } | |
1786 | #endif /* __APPLE__ */ | |
1787 | ||
76cd9e37 MS |
1788 | /* |
1789 | * Check whether we are accepting new connections... | |
1790 | */ | |
1791 | ||
1792 | if (ListeningPaused > 0 && cupsArrayCount(Clients) < MaxClients && | |
1793 | ListeningPaused < timeout) | |
1794 | { | |
1795 | if (ListeningPaused <= now) | |
1796 | timeout = now; | |
1797 | else | |
1798 | timeout = ListeningPaused; | |
1799 | ||
1800 | why = "resume listening"; | |
1801 | } | |
1802 | ||
ef416fc2 | 1803 | /* |
1804 | * Check the activity and close old clients... | |
1805 | */ | |
1806 | ||
bd7854cb | 1807 | for (con = (cupsd_client_t *)cupsArrayFirst(Clients); |
1808 | con; | |
1809 | con = (cupsd_client_t *)cupsArrayNext(Clients)) | |
ef416fc2 | 1810 | if ((con->http.activity + Timeout) < timeout) |
1811 | { | |
1812 | timeout = con->http.activity + Timeout; | |
1813 | why = "timeout a client connection"; | |
1814 | } | |
1815 | ||
3dfe78b3 | 1816 | /* |
bf3816c7 | 1817 | * Write out changes to configuration and state files... |
3dfe78b3 MS |
1818 | */ |
1819 | ||
1820 | if (DirtyCleanTime && timeout > DirtyCleanTime) | |
1821 | { | |
1822 | timeout = DirtyCleanTime; | |
1823 | why = "write dirty config/state files"; | |
1824 | } | |
1825 | ||
ef416fc2 | 1826 | /* |
1827 | * Check for any active jobs... | |
1828 | */ | |
1829 | ||
238c3832 MS |
1830 | for (job = (cupsd_job_t *)cupsArrayFirst(ActiveJobs); |
1831 | job; | |
1832 | job = (cupsd_job_t *)cupsArrayNext(ActiveJobs)) | |
ef416fc2 | 1833 | { |
238c3832 MS |
1834 | if (job->kill_time && job->kill_time < timeout) |
1835 | { | |
1836 | timeout = job->kill_time; | |
1837 | why = "kill unresponsive jobs"; | |
1838 | } | |
1839 | ||
1840 | if (job->state_value == IPP_JOB_HELD && job->hold_until < timeout) | |
1841 | { | |
1842 | timeout = job->hold_until; | |
1843 | why = "release held jobs"; | |
1844 | } | |
1845 | else if (job->state_value == IPP_JOB_PENDING && timeout > (now + 10)) | |
1846 | { | |
1847 | timeout = now + 10; | |
1848 | why = "start pending jobs"; | |
1849 | break; | |
1850 | } | |
ef416fc2 | 1851 | } |
1852 | ||
1853 | #ifdef HAVE_MALLINFO | |
1854 | /* | |
1855 | * Log memory usage every minute... | |
1856 | */ | |
1857 | ||
1858 | if (LogLevel >= CUPSD_LOG_DEBUG && (mallinfo_time + 60) < timeout) | |
1859 | { | |
1860 | timeout = mallinfo_time + 60; | |
1861 | why = "display memory usage"; | |
1862 | } | |
1863 | #endif /* HAVE_MALLINFO */ | |
1864 | ||
ef416fc2 | 1865 | /* |
1866 | * Expire subscriptions as needed... | |
1867 | */ | |
1868 | ||
1869 | for (sub = (cupsd_subscription_t *)cupsArrayFirst(Subscriptions); | |
1870 | sub; | |
1871 | sub = (cupsd_subscription_t *)cupsArrayNext(Subscriptions)) | |
bd7854cb | 1872 | if (!sub->job && sub->expire && sub->expire < timeout) |
ef416fc2 | 1873 | { |
1874 | timeout = sub->expire; | |
1875 | why = "expire subscription"; | |
1876 | } | |
1877 | ||
1878 | /* | |
1879 | * Adjust from absolute to relative time. If p->browse_time above | |
1880 | * was 0 then we can end up with a negative value here, so check. | |
1881 | * We add 1 second to the timeout since events occur after the | |
1882 | * timeout expires, and limit the timeout to 86400 seconds (1 day) | |
1883 | * to avoid select() timeout limits present on some operating | |
1884 | * systems... | |
1885 | */ | |
1886 | ||
1887 | timeout = timeout - now + 1; | |
1888 | ||
1889 | if (timeout < 1) | |
1890 | timeout = 1; | |
1891 | else if (timeout > 86400) | |
1892 | timeout = 86400; | |
1893 | ||
1894 | /* | |
1895 | * Log and return the timeout value... | |
1896 | */ | |
1897 | ||
f7deaa1a | 1898 | cupsdLogMessage(CUPSD_LOG_DEBUG2, "select_timeout(%d): %ld seconds to %s", |
1899 | fds, timeout, why); | |
ef416fc2 | 1900 | |
1901 | return (timeout); | |
1902 | } | |
1903 | ||
1904 | ||
e6013cfa MS |
1905 | /* |
1906 | * 'sigchld_handler()' - Handle 'child' signals from old processes. | |
1907 | */ | |
1908 | ||
1909 | static void | |
1910 | sigchld_handler(int sig) /* I - Signal number */ | |
1911 | { | |
1912 | (void)sig; | |
1913 | ||
1914 | /* | |
1915 | * Flag that we have dead children... | |
1916 | */ | |
1917 | ||
1918 | dead_children = 1; | |
1919 | ||
1920 | /* | |
1921 | * Reset the signal handler as needed... | |
1922 | */ | |
1923 | ||
1924 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1925 | signal(SIGCLD, sigchld_handler); | |
1926 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1927 | } | |
1928 | ||
1929 | ||
1930 | /* | |
1931 | * 'sighup_handler()' - Handle 'hangup' signals to reconfigure the scheduler. | |
1932 | */ | |
1933 | ||
1934 | static void | |
1935 | sighup_handler(int sig) /* I - Signal number */ | |
1936 | { | |
1937 | (void)sig; | |
1938 | ||
1939 | NeedReload = RELOAD_ALL; | |
1940 | ReloadTime = time(NULL); | |
1941 | ||
1942 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1943 | signal(SIGHUP, sighup_handler); | |
1944 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1945 | } | |
1946 | ||
1947 | ||
1948 | /* | |
1949 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the scheduler. | |
1950 | */ | |
1951 | ||
1952 | static void | |
1953 | sigterm_handler(int sig) /* I - Signal number */ | |
1954 | { | |
1955 | (void)sig; /* remove compiler warnings... */ | |
1956 | ||
1957 | /* | |
1958 | * Flag that we should stop and return... | |
1959 | */ | |
1960 | ||
1961 | stop_scheduler = 1; | |
1962 | } | |
1963 | ||
1964 | ||
ef416fc2 | 1965 | /* |
1966 | * 'usage()' - Show scheduler usage. | |
1967 | */ | |
1968 | ||
1969 | static void | |
a4d04587 | 1970 | usage(int status) /* O - Exit status */ |
ef416fc2 | 1971 | { |
0837b7e8 MS |
1972 | FILE *fp = status ? stderr : stdout; /* Output file */ |
1973 | ||
1974 | ||
1975 | _cupsLangPuts(fp, _("Usage: cupsd [options]")); | |
1976 | _cupsLangPuts(fp, _("Options:")); | |
84315f46 MS |
1977 | _cupsLangPuts(fp, _(" -c config-file Load alternate configuration " |
1978 | "file.")); | |
1979 | _cupsLangPuts(fp, _(" -f Run in the foreground.")); | |
1980 | _cupsLangPuts(fp, _(" -F Run in the foreground but " | |
1981 | "detach from console.")); | |
1982 | _cupsLangPuts(fp, _(" -h Show this usage message.")); | |
1983 | _cupsLangPuts(fp, _(" -l Run cupsd from launchd(8).")); | |
1984 | _cupsLangPuts(fp, _(" -t Test the configuration " | |
0837b7e8 | 1985 | "file.")); |
0837b7e8 | 1986 | |
a4d04587 | 1987 | exit(status); |
ef416fc2 | 1988 | } |
1989 | ||
1990 | ||
1991 | /* | |
b19ccc9e | 1992 | * End of "$Id: main.c 7925 2008-09-10 17:47:26Z mike $". |
ef416fc2 | 1993 | */ |