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