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ef416fc2 | 1 | /* |
bc44d920 | 2 | * "$Id: lpd.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 3 | * |
4 | * Line Printer Daemon backend for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
f42414bf | 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 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | * | |
17 | * Contents: | |
18 | * | |
19 | * main() - Send a file to the printer or server. | |
20 | * lpd_command() - Send an LPR command sequence and wait for a reply. | |
21 | * lpd_queue() - Queue a file using the Line Printer Daemon protocol. | |
22 | * lpd_timeout() - Handle timeout alarms... | |
23 | * lpd_write() - Write a buffer of data to an LPD server. | |
24 | * rresvport_af() - A simple implementation of rresvport_af(). | |
25 | * sigterm_handler() - Handle 'terminate' signals that stop the backend. | |
26 | */ | |
27 | ||
28 | /* | |
29 | * Include necessary headers. | |
30 | */ | |
31 | ||
32 | #include <cups/backend.h> | |
33 | #include <cups/http-private.h> | |
34 | #include <cups/cups.h> | |
c0e1af83 | 35 | #include <cups/i18n.h> |
ef416fc2 | 36 | #include <stdio.h> |
37 | #include <stdlib.h> | |
38 | #include <stdarg.h> | |
39 | #include <ctype.h> | |
40 | #include <cups/string.h> | |
41 | #include <errno.h> | |
42 | #include <sys/types.h> | |
43 | #include <sys/stat.h> | |
44 | #include <signal.h> | |
45 | ||
46 | #ifdef WIN32 | |
47 | # include <winsock.h> | |
48 | #else | |
49 | # include <sys/socket.h> | |
50 | # include <netinet/in.h> | |
51 | # include <arpa/inet.h> | |
52 | # include <netdb.h> | |
53 | #endif /* WIN32 */ | |
fa73b229 | 54 | #ifdef __APPLE__ |
55 | # include <CoreFoundation/CFNumber.h> | |
56 | # include <CoreFoundation/CFPreferences.h> | |
57 | #endif /* __APPLE__ */ | |
ef416fc2 | 58 | |
59 | ||
60 | /* | |
61 | * Globals... | |
62 | */ | |
63 | ||
64 | static char tmpfilename[1024] = ""; /* Temporary spool file name */ | |
65 | static int abort_job = 0; /* Non-zero if we get SIGTERM */ | |
66 | ||
67 | ||
f42414bf | 68 | /* |
69 | * Print mode... | |
70 | */ | |
71 | ||
72 | #define MODE_STANDARD 0 /* Queue a copy */ | |
73 | #define MODE_STREAM 1 /* Stream a copy */ | |
74 | ||
75 | ||
ef416fc2 | 76 | /* |
77 | * The order for control and data files in LPD requests... | |
78 | */ | |
79 | ||
80 | #define ORDER_CONTROL_DATA 0 /* Control file first, then data */ | |
81 | #define ORDER_DATA_CONTROL 1 /* Data file first, then control */ | |
82 | ||
83 | ||
84 | /* | |
85 | * What to reserve... | |
86 | */ | |
87 | ||
88 | #define RESERVE_NONE 0 /* Don't reserve a priviledged port */ | |
89 | #define RESERVE_RFC1179 1 /* Reserve port 721-731 */ | |
90 | #define RESERVE_ANY 2 /* Reserve port 1-1023 */ | |
91 | ||
92 | ||
93 | /* | |
94 | * Local functions... | |
95 | */ | |
96 | ||
97 | static int lpd_command(int lpd_fd, int timeout, char *format, ...); | |
98 | static int lpd_queue(const char *hostname, int port, const char *printer, | |
f42414bf | 99 | int print_fd, int mode, const char *user, |
100 | const char *title, int copies, int banner, | |
101 | int format, int order, int reserve, | |
fa73b229 | 102 | int manual_copies, int timeout, int contimeout); |
ef416fc2 | 103 | static void lpd_timeout(int sig); |
104 | static int lpd_write(int lpd_fd, char *buffer, int length); | |
105 | #ifndef HAVE_RRESVPORT_AF | |
106 | static int rresvport_af(int *port, int family); | |
107 | #endif /* !HAVE_RRESVPORT_AF */ | |
108 | static void sigterm_handler(int sig); | |
109 | ||
110 | ||
111 | /* | |
112 | * 'main()' - Send a file to the printer or server. | |
113 | * | |
114 | * Usage: | |
115 | * | |
116 | * printer-uri job-id user title copies options [file] | |
117 | */ | |
118 | ||
119 | int /* O - Exit status */ | |
120 | main(int argc, /* I - Number of command-line arguments (6 or 7) */ | |
121 | char *argv[]) /* I - Command-line arguments */ | |
122 | { | |
123 | char method[255], /* Method in URI */ | |
124 | hostname[1024], /* Hostname */ | |
125 | username[255], /* Username info */ | |
126 | resource[1024], /* Resource info (printer name) */ | |
127 | *options, /* Pointer to options */ | |
128 | name[255], /* Name of option */ | |
129 | value[255], /* Value of option */ | |
130 | *ptr, /* Pointer into name or value */ | |
131 | *filename, /* File to print */ | |
132 | title[256]; /* Title string */ | |
133 | int port; /* Port number */ | |
f42414bf | 134 | int fd; /* Print file */ |
ef416fc2 | 135 | int status; /* Status of LPD job */ |
f42414bf | 136 | int mode; /* Print mode */ |
ef416fc2 | 137 | int banner; /* Print banner page? */ |
138 | int format; /* Print format */ | |
139 | int order; /* Order of control/data files */ | |
140 | int reserve; /* Reserve priviledged port? */ | |
141 | int sanitize_title; /* Sanitize title string? */ | |
142 | int manual_copies, /* Do manual copies? */ | |
143 | timeout, /* Timeout */ | |
fa73b229 | 144 | contimeout, /* Connection timeout */ |
ef416fc2 | 145 | copies; /* Number of copies */ |
146 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
147 | struct sigaction action; /* Actions for POSIX signals */ | |
148 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
149 | ||
150 | ||
151 | /* | |
152 | * Make sure status messages are not buffered... | |
153 | */ | |
154 | ||
155 | setbuf(stderr, NULL); | |
156 | ||
157 | /* | |
158 | * Ignore SIGPIPE and catch SIGTERM signals... | |
159 | */ | |
160 | ||
161 | #ifdef HAVE_SIGSET | |
162 | sigset(SIGPIPE, SIG_IGN); | |
163 | sigset(SIGTERM, sigterm_handler); | |
164 | #elif defined(HAVE_SIGACTION) | |
165 | memset(&action, 0, sizeof(action)); | |
166 | action.sa_handler = SIG_IGN; | |
167 | sigaction(SIGPIPE, &action, NULL); | |
168 | ||
169 | sigemptyset(&action.sa_mask); | |
170 | sigaddset(&action.sa_mask, SIGTERM); | |
171 | action.sa_handler = sigterm_handler; | |
172 | sigaction(SIGTERM, &action, NULL); | |
173 | #else | |
174 | signal(SIGPIPE, SIG_IGN); | |
175 | signal(SIGTERM, sigterm_handler); | |
176 | #endif /* HAVE_SIGSET */ | |
177 | ||
178 | /* | |
179 | * Check command-line... | |
180 | */ | |
181 | ||
182 | if (argc == 1) | |
183 | { | |
184 | puts("network lpd \"Unknown\" \"LPD/LPR Host or Printer\""); | |
185 | return (CUPS_BACKEND_OK); | |
186 | } | |
187 | else if (argc < 6 || argc > 7) | |
188 | { | |
c0e1af83 | 189 | fprintf(stderr, _("Usage: %s job-id user title copies options [file]\n"), |
ef416fc2 | 190 | argv[0]); |
191 | return (CUPS_BACKEND_FAILED); | |
192 | } | |
193 | ||
ef416fc2 | 194 | /* |
195 | * Extract the hostname and printer name from the URI... | |
196 | */ | |
197 | ||
a4d04587 | 198 | httpSeparateURI(HTTP_URI_CODING_ALL, cupsBackendDeviceURI(argv), |
199 | method, sizeof(method), username, sizeof(username), | |
200 | hostname, sizeof(hostname), &port, | |
ef416fc2 | 201 | resource, sizeof(resource)); |
202 | ||
203 | if (!username[0]) | |
204 | { | |
205 | /* | |
206 | * If no username is in the device URI, then use the print job user... | |
207 | */ | |
208 | ||
209 | strlcpy(username, argv[2], sizeof(username)); | |
210 | } | |
211 | ||
212 | /* | |
213 | * See if there are any options... | |
214 | */ | |
215 | ||
f42414bf | 216 | mode = MODE_STANDARD; |
fa73b229 | 217 | banner = 0; |
218 | format = 'l'; | |
219 | order = ORDER_CONTROL_DATA; | |
220 | reserve = RESERVE_ANY; | |
221 | manual_copies = 1; | |
222 | timeout = 300; | |
223 | contimeout = 7 * 24 * 60 * 60; | |
ef416fc2 | 224 | |
fa73b229 | 225 | #ifdef __APPLE__ |
c0e1af83 | 226 | /* |
227 | * We want to pass utf-8 characters, not re-map them (3071945) | |
228 | */ | |
229 | ||
fa73b229 | 230 | sanitize_title = 0; |
231 | ||
c0e1af83 | 232 | /* |
233 | * Get the default timeout from a system preference... | |
234 | */ | |
235 | ||
fa73b229 | 236 | { |
237 | CFPropertyListRef pvalue; /* Preference value */ | |
238 | SInt32 toval; /* Timeout value */ | |
239 | ||
240 | ||
241 | pvalue = CFPreferencesCopyValue(CFSTR("timeout"), | |
242 | CFSTR("com.apple.print.backends"), | |
243 | kCFPreferencesAnyUser, | |
244 | kCFPreferencesCurrentHost); | |
245 | if (pvalue) | |
246 | { | |
247 | if (CFGetTypeID(pvalue) == CFNumberGetTypeID()) | |
248 | { | |
249 | CFNumberGetValue(pvalue, kCFNumberSInt32Type, &toval); | |
250 | contimeout = (int)toval; | |
251 | } | |
252 | ||
253 | CFRelease(pvalue); | |
254 | } | |
255 | } | |
256 | #else | |
257 | sanitize_title = 1; | |
258 | #endif /* __APPLE__ */ | |
ef416fc2 | 259 | |
260 | if ((options = strchr(resource, '?')) != NULL) | |
261 | { | |
262 | /* | |
263 | * Yup, terminate the device name string and move to the first | |
264 | * character of the options... | |
265 | */ | |
266 | ||
267 | *options++ = '\0'; | |
268 | ||
269 | /* | |
270 | * Parse options... | |
271 | */ | |
272 | ||
273 | while (*options) | |
274 | { | |
275 | /* | |
276 | * Get the name... | |
277 | */ | |
278 | ||
279 | for (ptr = name; *options && *options != '=';) | |
280 | if (ptr < (name + sizeof(name) - 1)) | |
281 | *ptr++ = *options++; | |
282 | *ptr = '\0'; | |
283 | ||
284 | if (*options == '=') | |
285 | { | |
286 | /* | |
287 | * Get the value... | |
288 | */ | |
289 | ||
290 | options ++; | |
291 | ||
292 | for (ptr = value; *options && *options != '+' && *options != '&';) | |
293 | if (ptr < (value + sizeof(value) - 1)) | |
294 | *ptr++ = *options++; | |
295 | *ptr = '\0'; | |
296 | ||
fa73b229 | 297 | if (*options == '+' || *options == '&') |
ef416fc2 | 298 | options ++; |
299 | } | |
300 | else | |
301 | value[0] = '\0'; | |
302 | ||
303 | /* | |
304 | * Process the option... | |
305 | */ | |
306 | ||
fa73b229 | 307 | if (!strcasecmp(name, "banner")) |
ef416fc2 | 308 | { |
309 | /* | |
310 | * Set the banner... | |
311 | */ | |
312 | ||
fa73b229 | 313 | banner = !value[0] || !strcasecmp(value, "on") || |
314 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 315 | } |
fa73b229 | 316 | else if (!strcasecmp(name, "format") && value[0]) |
ef416fc2 | 317 | { |
318 | /* | |
319 | * Set output format... | |
320 | */ | |
321 | ||
fa73b229 | 322 | if (strchr("cdfglnoprtv", value[0])) |
ef416fc2 | 323 | format = value[0]; |
324 | else | |
c0e1af83 | 325 | fprintf(stderr, _("ERROR: Unknown format character \"%c\"\n"), |
326 | value[0]); | |
ef416fc2 | 327 | } |
f42414bf | 328 | else if (!strcasecmp(name, "mode") && value[0]) |
329 | { | |
330 | /* | |
331 | * Set control/data order... | |
332 | */ | |
333 | ||
334 | if (!strcasecmp(value, "standard")) | |
bc44d920 | 335 | mode = MODE_STANDARD; |
f42414bf | 336 | else if (!strcasecmp(value, "stream")) |
bc44d920 | 337 | mode = MODE_STREAM; |
f42414bf | 338 | else |
c0e1af83 | 339 | fprintf(stderr, _("ERROR: Unknown print mode \"%s\"\n"), value); |
f42414bf | 340 | } |
fa73b229 | 341 | else if (!strcasecmp(name, "order") && value[0]) |
ef416fc2 | 342 | { |
343 | /* | |
344 | * Set control/data order... | |
345 | */ | |
346 | ||
fa73b229 | 347 | if (!strcasecmp(value, "control,data")) |
ef416fc2 | 348 | order = ORDER_CONTROL_DATA; |
fa73b229 | 349 | else if (!strcasecmp(value, "data,control")) |
ef416fc2 | 350 | order = ORDER_DATA_CONTROL; |
351 | else | |
c0e1af83 | 352 | fprintf(stderr, _("ERROR: Unknown file order \"%s\"\n"), value); |
ef416fc2 | 353 | } |
fa73b229 | 354 | else if (!strcasecmp(name, "reserve")) |
ef416fc2 | 355 | { |
356 | /* | |
357 | * Set port reservation mode... | |
358 | */ | |
359 | ||
fa73b229 | 360 | if (!value[0] || !strcasecmp(value, "on") || |
361 | !strcasecmp(value, "yes") || !strcasecmp(value, "true") || | |
ef416fc2 | 362 | !strcasecmp(value, "rfc1179")) |
363 | reserve = RESERVE_RFC1179; | |
364 | else if (!strcasecmp(value, "any")) | |
365 | reserve = RESERVE_ANY; | |
366 | else | |
367 | reserve = RESERVE_NONE; | |
368 | } | |
fa73b229 | 369 | else if (!strcasecmp(name, "manual_copies")) |
ef416fc2 | 370 | { |
371 | /* | |
372 | * Set manual copies... | |
373 | */ | |
374 | ||
fa73b229 | 375 | manual_copies = !value[0] || !strcasecmp(value, "on") || |
376 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 377 | } |
fa73b229 | 378 | else if (!strcasecmp(name, "sanitize_title")) |
ef416fc2 | 379 | { |
380 | /* | |
381 | * Set sanitize title... | |
382 | */ | |
383 | ||
fa73b229 | 384 | sanitize_title = !value[0] || !strcasecmp(value, "on") || |
385 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 386 | } |
fa73b229 | 387 | else if (!strcasecmp(name, "timeout")) |
ef416fc2 | 388 | { |
389 | /* | |
390 | * Set the timeout... | |
391 | */ | |
392 | ||
393 | if (atoi(value) > 0) | |
394 | timeout = atoi(value); | |
395 | } | |
fa73b229 | 396 | else if (!strcasecmp(name, "contimeout")) |
397 | { | |
398 | /* | |
c0e1af83 | 399 | * Set the connection timeout... |
fa73b229 | 400 | */ |
401 | ||
402 | if (atoi(value) > 0) | |
403 | contimeout = atoi(value); | |
404 | } | |
ef416fc2 | 405 | } |
406 | } | |
407 | ||
f42414bf | 408 | if (mode == MODE_STREAM) |
409 | order = ORDER_CONTROL_DATA; | |
410 | ||
411 | /* | |
412 | * If we have 7 arguments, print the file named on the command-line. | |
413 | * Otherwise, copy stdin to a temporary file and print the temporary | |
414 | * file. | |
415 | */ | |
416 | ||
417 | if (argc == 6 && mode == MODE_STANDARD) | |
418 | { | |
419 | /* | |
420 | * Copy stdin to a temporary file... | |
421 | */ | |
422 | ||
423 | char buffer[8192]; /* Buffer for copying */ | |
424 | int bytes; /* Number of bytes read */ | |
425 | ||
426 | ||
427 | if ((fd = cupsTempFd(tmpfilename, sizeof(tmpfilename))) < 0) | |
428 | { | |
429 | perror("ERROR: unable to create temporary file"); | |
430 | return (CUPS_BACKEND_FAILED); | |
431 | } | |
432 | ||
433 | while ((bytes = fread(buffer, 1, sizeof(buffer), stdin)) > 0) | |
434 | if (write(fd, buffer, bytes) < bytes) | |
435 | { | |
436 | perror("ERROR: unable to write to temporary file"); | |
437 | close(fd); | |
438 | unlink(tmpfilename); | |
439 | return (CUPS_BACKEND_FAILED); | |
440 | } | |
441 | ||
442 | filename = tmpfilename; | |
443 | } | |
444 | else if (argc == 6) | |
445 | { | |
446 | /* | |
447 | * Stream from stdin... | |
448 | */ | |
449 | ||
450 | filename = NULL; | |
451 | fd = 0; | |
452 | } | |
453 | else | |
454 | { | |
455 | filename = argv[6]; | |
456 | fd = open(filename, O_RDONLY); | |
457 | ||
458 | if (fd == -1) | |
459 | { | |
c0e1af83 | 460 | fprintf(stderr, _("ERROR: Unable to open print file %s: %s\n"), |
f42414bf | 461 | filename, strerror(errno)); |
462 | return (CUPS_BACKEND_FAILED); | |
463 | } | |
464 | } | |
465 | ||
ef416fc2 | 466 | /* |
467 | * Sanitize the document title... | |
468 | */ | |
469 | ||
470 | strlcpy(title, argv[3], sizeof(title)); | |
471 | ||
472 | if (sanitize_title) | |
473 | { | |
474 | /* | |
475 | * Sanitize the title string so that we don't cause problems on | |
476 | * the remote end... | |
477 | */ | |
478 | ||
479 | for (ptr = title; *ptr; ptr ++) | |
480 | if (!isalnum(*ptr & 255) && !isspace(*ptr & 255)) | |
481 | *ptr = '_'; | |
482 | } | |
483 | ||
484 | /* | |
485 | * Queue the job... | |
486 | */ | |
487 | ||
488 | if (argc > 6) | |
489 | { | |
490 | if (manual_copies) | |
491 | { | |
492 | manual_copies = atoi(argv[4]); | |
493 | copies = 1; | |
494 | } | |
495 | else | |
496 | { | |
497 | manual_copies = 1; | |
498 | copies = atoi(argv[4]); | |
499 | } | |
500 | ||
f42414bf | 501 | status = lpd_queue(hostname, port, resource + 1, fd, mode, |
ef416fc2 | 502 | username, title, copies, |
fa73b229 | 503 | banner, format, order, reserve, manual_copies, |
504 | timeout, contimeout); | |
ef416fc2 | 505 | |
506 | if (!status) | |
507 | fprintf(stderr, "PAGE: 1 %d\n", atoi(argv[4])); | |
508 | } | |
509 | else | |
f42414bf | 510 | status = lpd_queue(hostname, port, resource + 1, fd, mode, |
ef416fc2 | 511 | username, title, 1, |
fa73b229 | 512 | banner, format, order, reserve, 1, |
513 | timeout, contimeout); | |
ef416fc2 | 514 | |
515 | /* | |
516 | * Remove the temporary file if necessary... | |
517 | */ | |
518 | ||
519 | if (tmpfilename[0]) | |
520 | unlink(tmpfilename); | |
521 | ||
f42414bf | 522 | if (fd) |
523 | close(fd); | |
524 | ||
ef416fc2 | 525 | /* |
526 | * Return the queue status... | |
527 | */ | |
528 | ||
529 | return (status); | |
530 | } | |
531 | ||
532 | ||
533 | /* | |
534 | * 'lpd_command()' - Send an LPR command sequence and wait for a reply. | |
535 | */ | |
536 | ||
537 | static int /* O - Status of command */ | |
538 | lpd_command(int fd, /* I - Socket connection to LPD host */ | |
539 | int timeout, /* I - Seconds to wait for a response */ | |
540 | char *format, /* I - printf()-style format string */ | |
541 | ...) /* I - Additional args as necessary */ | |
542 | { | |
543 | va_list ap; /* Argument pointer */ | |
544 | char buf[1024]; /* Output buffer */ | |
545 | int bytes; /* Number of bytes to output */ | |
546 | char status; /* Status from command */ | |
547 | ||
548 | ||
549 | /* | |
550 | * Don't try to send commands if the job has been cancelled... | |
551 | */ | |
552 | ||
553 | if (abort_job) | |
554 | return (-1); | |
555 | ||
556 | /* | |
557 | * Format the string... | |
558 | */ | |
559 | ||
560 | va_start(ap, format); | |
561 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
562 | va_end(ap); | |
563 | ||
564 | fprintf(stderr, "DEBUG: lpd_command %2.2x %s", buf[0], buf + 1); | |
565 | ||
566 | /* | |
567 | * Send the command... | |
568 | */ | |
569 | ||
570 | fprintf(stderr, "DEBUG: Sending command string (%d bytes)...\n", bytes); | |
571 | ||
572 | if (lpd_write(fd, buf, bytes) < bytes) | |
573 | { | |
574 | perror("ERROR: Unable to send LPD command"); | |
575 | return (-1); | |
576 | } | |
577 | ||
578 | /* | |
579 | * Read back the status from the command and return it... | |
580 | */ | |
581 | ||
c0e1af83 | 582 | fputs("DEBUG: Reading command status...\n", stderr); |
ef416fc2 | 583 | |
584 | alarm(timeout); | |
585 | ||
586 | if (recv(fd, &status, 1, 0) < 1) | |
587 | { | |
c0e1af83 | 588 | fprintf(stderr, |
589 | _("WARNING: Remote host did not respond with command status " | |
590 | "byte after %d seconds!\n"), timeout); | |
ef416fc2 | 591 | status = errno; |
592 | } | |
593 | ||
594 | alarm(0); | |
595 | ||
596 | fprintf(stderr, "DEBUG: lpd_command returning %d\n", status); | |
597 | ||
598 | return (status); | |
599 | } | |
600 | ||
601 | ||
602 | /* | |
603 | * 'lpd_queue()' - Queue a file using the Line Printer Daemon protocol. | |
604 | */ | |
605 | ||
606 | static int /* O - Zero on success, non-zero on failure */ | |
607 | lpd_queue(const char *hostname, /* I - Host to connect to */ | |
608 | int port, /* I - Port to connect on */ | |
609 | const char *printer, /* I - Printer/queue name */ | |
f42414bf | 610 | int print_fd, /* I - File to print */ |
611 | int mode, /* I - Print mode */ | |
ef416fc2 | 612 | const char *user, /* I - Requesting user */ |
613 | const char *title, /* I - Job title */ | |
614 | int copies, /* I - Number of copies */ | |
615 | int banner, /* I - Print LPD banner? */ | |
616 | int format, /* I - Format specifier */ | |
617 | int order, /* I - Order of data/control files */ | |
618 | int reserve, /* I - Reserve ports? */ | |
619 | int manual_copies, /* I - Do copies by hand... */ | |
fa73b229 | 620 | int timeout, /* I - Timeout... */ |
621 | int contimeout) /* I - Connection timeout */ | |
ef416fc2 | 622 | { |
ef416fc2 | 623 | char localhost[255]; /* Local host name */ |
624 | int error; /* Error number */ | |
625 | struct stat filestats; /* File statistics */ | |
626 | int lport; /* LPD connection local port */ | |
627 | int fd; /* LPD socket */ | |
628 | char control[10240], /* LPD control 'file' */ | |
629 | *cptr; /* Pointer into control file string */ | |
630 | char status; /* Status byte from command */ | |
631 | char portname[255]; /* Port name */ | |
c0e1af83 | 632 | int delay; /* Delay for retries... */ |
26d47ec6 | 633 | char addrname[256]; /* Address name */ |
ef416fc2 | 634 | http_addrlist_t *addrlist, /* Address list */ |
635 | *addr; /* Socket address */ | |
636 | int copy; /* Copies written */ | |
fa73b229 | 637 | time_t start_time; /* Time of first connect */ |
fa73b229 | 638 | int recoverable; /* Recoverable error shown? */ |
ef416fc2 | 639 | size_t nbytes; /* Number of bytes written */ |
640 | off_t tbytes; /* Total bytes written */ | |
a74454a7 | 641 | char buffer[32768]; /* Output buffer */ |
ef416fc2 | 642 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
643 | struct sigaction action; /* Actions for POSIX signals */ | |
644 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
645 | ||
646 | ||
647 | /* | |
648 | * Setup an alarm handler for timeouts... | |
649 | */ | |
650 | ||
651 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
652 | sigset(SIGALRM, lpd_timeout); | |
653 | #elif defined(HAVE_SIGACTION) | |
654 | memset(&action, 0, sizeof(action)); | |
655 | ||
656 | sigemptyset(&action.sa_mask); | |
657 | action.sa_handler = lpd_timeout; | |
658 | sigaction(SIGALRM, &action, NULL); | |
659 | #else | |
660 | signal(SIGALRM, lpd_timeout); | |
661 | #endif /* HAVE_SIGSET */ | |
662 | ||
663 | /* | |
664 | * Find the printer... | |
665 | */ | |
666 | ||
667 | sprintf(portname, "%d", port); | |
668 | ||
669 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
670 | { | |
c0e1af83 | 671 | fprintf(stderr, _("ERROR: Unable to locate printer \'%s\'!\n"), hostname); |
ef416fc2 | 672 | return (CUPS_BACKEND_STOP); |
673 | } | |
674 | ||
fa73b229 | 675 | /* |
c0e1af83 | 676 | * Remember when we started trying to connect to the printer... |
fa73b229 | 677 | */ |
678 | ||
fa73b229 | 679 | recoverable = 0; |
fa73b229 | 680 | start_time = time(NULL); |
681 | ||
ef416fc2 | 682 | /* |
683 | * Loop forever trying to print the file... | |
684 | */ | |
685 | ||
686 | while (!abort_job) | |
687 | { | |
688 | /* | |
689 | * First try to reserve a port for this connection... | |
690 | */ | |
691 | ||
757d2cad | 692 | fputs("STATE: +connecting-to-device\n", stderr); |
c0e1af83 | 693 | fprintf(stderr, |
694 | _("INFO: Attempting to connect to host %s for printer %s\n"), | |
ef416fc2 | 695 | hostname, printer); |
696 | ||
c0e1af83 | 697 | for (lport = reserve == RESERVE_RFC1179 ? 732 : 1024, addr = addrlist, |
698 | delay = 5;; | |
ef416fc2 | 699 | addr = addr->next) |
700 | { | |
701 | /* | |
702 | * Stop if this job has been cancelled... | |
703 | */ | |
704 | ||
705 | if (abort_job) | |
706 | { | |
707 | httpAddrFreeList(addrlist); | |
708 | ||
709 | return (CUPS_BACKEND_FAILED); | |
710 | } | |
711 | ||
712 | /* | |
713 | * Choose the next priviledged port... | |
714 | */ | |
715 | ||
716 | if (!addr) | |
717 | addr = addrlist; | |
718 | ||
719 | lport --; | |
720 | ||
721 | if (lport < 721 && reserve == RESERVE_RFC1179) | |
722 | lport = 731; | |
723 | else if (lport < 1) | |
724 | lport = 1023; | |
725 | ||
726 | #ifdef HAVE_GETEUID | |
727 | if (geteuid() || !reserve) | |
728 | #else | |
729 | if (getuid() || !reserve) | |
730 | #endif /* HAVE_GETEUID */ | |
731 | { | |
732 | /* | |
733 | * Just create a regular socket... | |
734 | */ | |
735 | ||
736 | if ((fd = socket(addr->addr.addr.sa_family, SOCK_STREAM, 0)) < 0) | |
737 | { | |
738 | perror("ERROR: Unable to create socket"); | |
739 | sleep(1); | |
740 | ||
741 | continue; | |
742 | } | |
743 | ||
744 | lport = 0; | |
745 | } | |
746 | else | |
747 | { | |
748 | /* | |
749 | * We're running as root and want to comply with RFC 1179. Reserve a | |
750 | * priviledged lport between 721 and 731... | |
751 | */ | |
752 | ||
753 | if ((fd = rresvport_af(&lport, addr->addr.addr.sa_family)) < 0) | |
754 | { | |
755 | perror("ERROR: Unable to reserve port"); | |
756 | sleep(1); | |
757 | ||
758 | continue; | |
759 | } | |
760 | } | |
761 | ||
762 | /* | |
763 | * Connect to the printer or server... | |
764 | */ | |
765 | ||
766 | if (abort_job) | |
767 | { | |
768 | httpAddrFreeList(addrlist); | |
769 | ||
770 | close(fd); | |
771 | ||
772 | return (CUPS_BACKEND_FAILED); | |
773 | } | |
774 | ||
775 | if (!connect(fd, &(addr->addr.addr), httpAddrLength(&(addr->addr)))) | |
776 | break; | |
777 | ||
778 | error = errno; | |
779 | close(fd); | |
780 | fd = -1; | |
781 | ||
782 | if (addr->next) | |
783 | continue; | |
784 | ||
785 | if (getenv("CLASS") != NULL) | |
786 | { | |
787 | /* | |
788 | * If the CLASS environment variable is set, the job was submitted | |
789 | * to a class and not to a specific queue. In this case, we want | |
790 | * to abort immediately so that the job can be requeued on the next | |
791 | * available printer in the class. | |
792 | */ | |
793 | ||
c0e1af83 | 794 | fputs(_("INFO: Unable to contact printer, queuing on next " |
795 | "printer in class...\n"), stderr); | |
ef416fc2 | 796 | |
797 | httpAddrFreeList(addrlist); | |
798 | ||
799 | /* | |
800 | * Sleep 5 seconds to keep the job from requeuing too rapidly... | |
801 | */ | |
802 | ||
803 | sleep(5); | |
804 | ||
805 | return (CUPS_BACKEND_FAILED); | |
806 | } | |
807 | ||
808 | if (error == ECONNREFUSED || error == EHOSTDOWN || | |
809 | error == EHOSTUNREACH) | |
810 | { | |
fa73b229 | 811 | if (contimeout && (time(NULL) - start_time) > contimeout) |
812 | { | |
c0e1af83 | 813 | fputs(_("ERROR: Printer not responding!\n"), stderr); |
fa73b229 | 814 | return (CUPS_BACKEND_FAILED); |
815 | } | |
816 | ||
fa73b229 | 817 | recoverable = 1; |
c0e1af83 | 818 | |
819 | fprintf(stderr, | |
820 | _("WARNING: recoverable: Network host \'%s\' is busy; will " | |
821 | "retry in %d seconds...\n"), | |
822 | hostname, delay); | |
823 | ||
824 | sleep(delay); | |
825 | ||
826 | if (delay < 30) | |
827 | delay += 5; | |
ef416fc2 | 828 | } |
829 | else if (error == EADDRINUSE) | |
830 | { | |
831 | /* | |
832 | * Try on another port... | |
833 | */ | |
834 | ||
835 | sleep(1); | |
836 | } | |
837 | else | |
838 | { | |
fa73b229 | 839 | recoverable = 1; |
c0e1af83 | 840 | |
841 | fprintf(stderr, "DEBUG: Connection error: %s\n", strerror(errno)); | |
842 | fputs(_("ERROR: recoverable: Unable to connect to printer; will " | |
843 | "retry in 30 seconds...\n"), stderr); | |
844 | sleep(30); | |
ef416fc2 | 845 | } |
846 | } | |
847 | ||
fa73b229 | 848 | if (recoverable) |
849 | { | |
850 | /* | |
851 | * If we've shown a recoverable error make sure the printer proxies | |
852 | * have a chance to see the recovered message. Not pretty but | |
853 | * necessary for now... | |
854 | */ | |
855 | ||
856 | fputs("INFO: recovered: \n", stderr); | |
857 | sleep(5); | |
858 | } | |
fa73b229 | 859 | |
757d2cad | 860 | fputs("STATE: -connecting-to-device\n", stderr); |
c0e1af83 | 861 | fprintf(stderr, _("INFO: Connected to %s...\n"), hostname); |
26d47ec6 | 862 | |
863 | #ifdef AF_INET6 | |
864 | if (addr->addr.addr.sa_family == AF_INET6) | |
865 | fprintf(stderr, "DEBUG: Connected to [%s]:%d (IPv6) (local port %d)...\n", | |
c0e1af83 | 866 | httpAddrString(&addr->addr, addrname, sizeof(addrname)), |
867 | ntohs(addr->addr.ipv6.sin6_port), lport); | |
26d47ec6 | 868 | else |
869 | #endif /* AF_INET6 */ | |
870 | if (addr->addr.addr.sa_family == AF_INET) | |
871 | fprintf(stderr, "DEBUG: Connected to %s:%d (IPv4) (local port %d)...\n", | |
c0e1af83 | 872 | httpAddrString(&addr->addr, addrname, sizeof(addrname)), |
873 | ntohs(addr->addr.ipv4.sin_port), lport); | |
ef416fc2 | 874 | |
875 | /* | |
876 | * Next, open the print file and figure out its size... | |
877 | */ | |
878 | ||
f42414bf | 879 | if (print_fd) |
ef416fc2 | 880 | { |
c0e1af83 | 881 | /* |
882 | * Use the size from the print file... | |
883 | */ | |
884 | ||
f42414bf | 885 | if (fstat(print_fd, &filestats)) |
886 | { | |
887 | httpAddrFreeList(addrlist); | |
888 | close(fd); | |
ef416fc2 | 889 | |
f42414bf | 890 | perror("ERROR: unable to stat print file"); |
891 | return (CUPS_BACKEND_FAILED); | |
892 | } | |
ef416fc2 | 893 | |
f42414bf | 894 | filestats.st_size *= manual_copies; |
ef416fc2 | 895 | } |
f42414bf | 896 | else |
c0e1af83 | 897 | { |
898 | /* | |
899 | * Use a "very large value" for the size so that the printer will | |
900 | * keep printing until we close the connection... | |
901 | */ | |
902 | ||
f42414bf | 903 | #ifdef _LARGEFILE_SOURCE |
904 | filestats.st_size = (size_t)(999999999999.0); | |
905 | #else | |
906 | filestats.st_size = 2147483647; | |
907 | #endif /* _LARGEFILE_SOURCE */ | |
c0e1af83 | 908 | } |
ef416fc2 | 909 | |
910 | /* | |
911 | * Send a job header to the printer, specifying no banner page and | |
912 | * literal output... | |
913 | */ | |
914 | ||
915 | if (lpd_command(fd, timeout, "\002%s\n", | |
916 | printer)) /* Receive print job(s) */ | |
917 | { | |
918 | httpAddrFreeList(addrlist); | |
919 | close(fd); | |
920 | return (CUPS_BACKEND_FAILED); | |
921 | } | |
922 | ||
757d2cad | 923 | httpGetHostname(NULL, localhost, sizeof(localhost)); |
ef416fc2 | 924 | |
925 | snprintf(control, sizeof(control), | |
926 | "H%.31s\n" /* RFC 1179, Section 7.2 - host name <= 31 chars */ | |
927 | "P%.31s\n" /* RFC 1179, Section 7.2 - user name <= 31 chars */ | |
928 | "J%.99s\n", /* RFC 1179, Section 7.2 - job name <= 99 chars */ | |
929 | localhost, user, title); | |
930 | cptr = control + strlen(control); | |
931 | ||
932 | if (banner) | |
933 | { | |
934 | snprintf(cptr, sizeof(control) - (cptr - control), | |
935 | "C%.31s\n" /* RFC 1179, Section 7.2 - class name <= 31 chars */ | |
936 | "L%s\n", | |
937 | localhost, user); | |
938 | cptr += strlen(cptr); | |
939 | } | |
940 | ||
941 | while (copies > 0) | |
942 | { | |
943 | snprintf(cptr, sizeof(control) - (cptr - control), "%cdfA%03d%.15s\n", | |
944 | format, (int)getpid() % 1000, localhost); | |
945 | cptr += strlen(cptr); | |
946 | copies --; | |
947 | } | |
948 | ||
949 | snprintf(cptr, sizeof(control) - (cptr - control), | |
950 | "UdfA%03d%.15s\n" | |
951 | "N%.131s\n", /* RFC 1179, Section 7.2 - sourcefile name <= 131 chars */ | |
952 | (int)getpid() % 1000, localhost, title); | |
953 | ||
954 | fprintf(stderr, "DEBUG: Control file is:\n%s", control); | |
955 | ||
956 | if (order == ORDER_CONTROL_DATA) | |
957 | { | |
958 | if (lpd_command(fd, timeout, "\002%d cfA%03.3d%.15s\n", strlen(control), | |
959 | (int)getpid() % 1000, localhost)) | |
960 | { | |
961 | httpAddrFreeList(addrlist); | |
962 | close(fd); | |
963 | ||
964 | return (CUPS_BACKEND_FAILED); | |
965 | } | |
966 | ||
c0e1af83 | 967 | fprintf(stderr, _("INFO: Sending control file (%u bytes)\n"), |
ef416fc2 | 968 | (unsigned)strlen(control)); |
969 | ||
970 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
971 | { | |
972 | status = errno; | |
973 | perror("ERROR: Unable to write control file"); | |
974 | } | |
975 | else | |
976 | { | |
977 | alarm(timeout); | |
978 | ||
979 | if (read(fd, &status, 1) < 1) | |
980 | { | |
c0e1af83 | 981 | fprintf(stderr, |
982 | _("WARNING: Remote host did not respond with control " | |
983 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 984 | status = errno; |
985 | } | |
986 | ||
987 | alarm(0); | |
988 | } | |
989 | ||
990 | if (status != 0) | |
c0e1af83 | 991 | fprintf(stderr, |
992 | _("ERROR: Remote host did not accept control file (%d)\n"), | |
ef416fc2 | 993 | status); |
994 | else | |
c0e1af83 | 995 | fputs(_("INFO: Control file sent successfully\n"), stderr); |
ef416fc2 | 996 | } |
997 | else | |
998 | status = 0; | |
999 | ||
1000 | if (status == 0) | |
1001 | { | |
1002 | /* | |
1003 | * Send the print file... | |
1004 | */ | |
1005 | ||
1006 | if (lpd_command(fd, timeout, "\003" CUPS_LLFMT " dfA%03.3d%.15s\n", | |
1007 | CUPS_LLCAST filestats.st_size, (int)getpid() % 1000, | |
1008 | localhost)) | |
1009 | { | |
1010 | httpAddrFreeList(addrlist); | |
1011 | close(fd); | |
1012 | ||
1013 | return (CUPS_BACKEND_FAILED); | |
1014 | } | |
1015 | ||
c0e1af83 | 1016 | fprintf(stderr, |
1017 | #ifdef HAVE_LONG_LONG | |
1018 | _("INFO: Sending data file (%lld bytes)\n"), | |
1019 | #else | |
1020 | _("INFO: Sending data file (%ld bytes)\n"), | |
1021 | #endif /* HAVE_LONG_LONG */ | |
ef416fc2 | 1022 | CUPS_LLCAST filestats.st_size); |
1023 | ||
1024 | tbytes = 0; | |
1025 | for (copy = 0; copy < manual_copies; copy ++) | |
1026 | { | |
f42414bf | 1027 | lseek(print_fd, 0, SEEK_SET); |
ef416fc2 | 1028 | |
f42414bf | 1029 | while ((nbytes = read(print_fd, buffer, sizeof(buffer))) > 0) |
ef416fc2 | 1030 | { |
c0e1af83 | 1031 | fprintf(stderr, _("INFO: Spooling LPR job, %.0f%% complete...\n"), |
ef416fc2 | 1032 | 100.0 * tbytes / filestats.st_size); |
1033 | ||
1034 | if (lpd_write(fd, buffer, nbytes) < nbytes) | |
1035 | { | |
1036 | perror("ERROR: Unable to send print file to printer"); | |
1037 | break; | |
1038 | } | |
1039 | else | |
1040 | tbytes += nbytes; | |
1041 | } | |
1042 | } | |
1043 | ||
f42414bf | 1044 | if (mode == MODE_STANDARD) |
ef416fc2 | 1045 | { |
f42414bf | 1046 | if (tbytes < filestats.st_size) |
1047 | status = errno; | |
1048 | else if (lpd_write(fd, "", 1) < 1) | |
1049 | { | |
1050 | perror("ERROR: Unable to send trailing nul to printer"); | |
1051 | status = errno; | |
1052 | } | |
1053 | else | |
1054 | { | |
1055 | /* | |
1056 | * Read the status byte from the printer; if we can't read the byte | |
1057 | * back now, we should set status to "errno", however at this point | |
1058 | * we know the printer got the whole file and we don't necessarily | |
1059 | * want to requeue it over and over... | |
1060 | */ | |
ef416fc2 | 1061 | |
f42414bf | 1062 | alarm(timeout); |
ef416fc2 | 1063 | |
f42414bf | 1064 | if (recv(fd, &status, 1, 0) < 1) |
1065 | { | |
c0e1af83 | 1066 | fprintf(stderr, |
1067 | _("WARNING: Remote host did not respond with data " | |
1068 | "status byte after %d seconds!\n"), timeout); | |
f42414bf | 1069 | status = 0; |
1070 | } | |
ef416fc2 | 1071 | |
f42414bf | 1072 | alarm(0); |
1073 | } | |
ef416fc2 | 1074 | } |
f42414bf | 1075 | else |
1076 | status = 0; | |
ef416fc2 | 1077 | |
1078 | if (status != 0) | |
c0e1af83 | 1079 | fprintf(stderr, _("ERROR: Remote host did not accept data file (%d)\n"), |
ef416fc2 | 1080 | status); |
1081 | else | |
c0e1af83 | 1082 | fputs(_("INFO: Data file sent successfully\n"), stderr); |
ef416fc2 | 1083 | } |
1084 | ||
1085 | if (status == 0 && order == ORDER_DATA_CONTROL) | |
1086 | { | |
1087 | if (lpd_command(fd, timeout, "\002%d cfA%03.3d%.15s\n", strlen(control), | |
1088 | (int)getpid() % 1000, localhost)) | |
1089 | { | |
1090 | httpAddrFreeList(addrlist); | |
1091 | close(fd); | |
1092 | ||
1093 | return (CUPS_BACKEND_FAILED); | |
1094 | } | |
1095 | ||
c0e1af83 | 1096 | fprintf(stderr, _("INFO: Sending control file (%lu bytes)\n"), |
ef416fc2 | 1097 | (unsigned long)strlen(control)); |
1098 | ||
1099 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
1100 | { | |
1101 | status = errno; | |
1102 | perror("ERROR: Unable to write control file"); | |
1103 | } | |
1104 | else | |
1105 | { | |
1106 | alarm(timeout); | |
1107 | ||
1108 | if (read(fd, &status, 1) < 1) | |
1109 | { | |
c0e1af83 | 1110 | fprintf(stderr, |
1111 | _("WARNING: Remote host did not respond with control " | |
1112 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 1113 | status = errno; |
1114 | } | |
1115 | ||
1116 | alarm(0); | |
1117 | } | |
1118 | ||
1119 | if (status != 0) | |
c0e1af83 | 1120 | fprintf(stderr, |
1121 | _("ERROR: Remote host did not accept control file (%d)\n"), | |
ef416fc2 | 1122 | status); |
1123 | else | |
c0e1af83 | 1124 | fputs(_("INFO: Control file sent successfully\n"), stderr); |
ef416fc2 | 1125 | } |
1126 | ||
1127 | /* | |
1128 | * Close the socket connection and input file... | |
1129 | */ | |
1130 | ||
1131 | close(fd); | |
ef416fc2 | 1132 | |
1133 | if (status == 0) | |
1134 | { | |
1135 | httpAddrFreeList(addrlist); | |
1136 | ||
1137 | return (CUPS_BACKEND_OK); | |
1138 | } | |
1139 | ||
1140 | /* | |
1141 | * Waiting for a retry... | |
1142 | */ | |
1143 | ||
1144 | sleep(30); | |
1145 | } | |
1146 | ||
1147 | httpAddrFreeList(addrlist); | |
1148 | ||
1149 | /* | |
1150 | * If we get here, then the job has been cancelled... | |
1151 | */ | |
1152 | ||
1153 | return (CUPS_BACKEND_FAILED); | |
1154 | } | |
1155 | ||
1156 | ||
1157 | /* | |
1158 | * 'lpd_timeout()' - Handle timeout alarms... | |
1159 | */ | |
1160 | ||
1161 | static void | |
1162 | lpd_timeout(int sig) /* I - Signal number */ | |
1163 | { | |
1164 | (void)sig; | |
1165 | ||
1166 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1167 | signal(SIGALRM, lpd_timeout); | |
1168 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1169 | } | |
1170 | ||
1171 | ||
1172 | /* | |
1173 | * 'lpd_write()' - Write a buffer of data to an LPD server. | |
1174 | */ | |
1175 | ||
1176 | static int /* O - Number of bytes written or -1 on error */ | |
1177 | lpd_write(int lpd_fd, /* I - LPD socket */ | |
1178 | char *buffer, /* I - Buffer to write */ | |
1179 | int length) /* I - Number of bytes to write */ | |
1180 | { | |
1181 | int bytes, /* Number of bytes written */ | |
1182 | total; /* Total number of bytes written */ | |
1183 | ||
1184 | ||
1185 | if (abort_job) | |
1186 | return (-1); | |
1187 | ||
1188 | total = 0; | |
1189 | while ((bytes = send(lpd_fd, buffer, length - total, 0)) >= 0) | |
1190 | { | |
1191 | total += bytes; | |
1192 | buffer += bytes; | |
1193 | ||
1194 | if (total == length) | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | if (bytes < 0) | |
1199 | return (-1); | |
1200 | else | |
1201 | return (length); | |
1202 | } | |
1203 | ||
1204 | ||
1205 | #ifndef HAVE_RRESVPORT_AF | |
1206 | /* | |
1207 | * 'rresvport_af()' - A simple implementation of rresvport_af(). | |
1208 | */ | |
1209 | ||
1210 | static int /* O - Socket or -1 on error */ | |
1211 | rresvport_af(int *port, /* IO - Port number to bind to */ | |
1212 | int family) /* I - Address family */ | |
1213 | { | |
1214 | http_addr_t addr; /* Socket address */ | |
1215 | int fd; /* Socket file descriptor */ | |
1216 | ||
1217 | ||
1218 | /* | |
1219 | * Try to create an IPv4 socket... | |
1220 | */ | |
1221 | ||
1222 | if ((fd = socket(family, SOCK_STREAM, 0)) < 0) | |
1223 | return (-1); | |
1224 | ||
1225 | /* | |
1226 | * Initialize the address buffer... | |
1227 | */ | |
1228 | ||
1229 | memset(&addr, 0, sizeof(addr)); | |
1230 | addr.addr.sa_family = family; | |
1231 | ||
1232 | /* | |
1233 | * Try to bind the socket to a reserved port... | |
1234 | */ | |
1235 | ||
1236 | while (*port > 511) | |
1237 | { | |
1238 | /* | |
1239 | * Set the port number... | |
1240 | */ | |
1241 | ||
1242 | # ifdef AF_INET6 | |
1243 | if (family == AF_INET6) | |
1244 | addr.ipv6.sin6_port = htons(*port); | |
1245 | else | |
1246 | # endif /* AF_INET6 */ | |
1247 | addr.ipv4.sin_port = htons(*port); | |
1248 | ||
1249 | /* | |
1250 | * Try binding the port to the socket; return if all is OK... | |
1251 | */ | |
1252 | ||
1253 | if (!bind(fd, (struct sockaddr *)&addr, sizeof(addr))) | |
1254 | return (fd); | |
1255 | ||
1256 | /* | |
1257 | * Stop if we have any error other than "address already in use"... | |
1258 | */ | |
1259 | ||
1260 | if (errno != EADDRINUSE) | |
1261 | { | |
1262 | # ifdef WIN32 | |
1263 | closesocket(fd); | |
1264 | # else | |
1265 | close(fd); | |
1266 | # endif /* WIN32 */ | |
1267 | ||
1268 | return (-1); | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * Try the next port... | |
1273 | */ | |
1274 | ||
1275 | (*port)--; | |
1276 | } | |
1277 | ||
1278 | /* | |
1279 | * Wasn't able to bind to a reserved port, so close the socket and return | |
1280 | * -1... | |
1281 | */ | |
1282 | ||
1283 | # ifdef WIN32 | |
1284 | closesocket(fd); | |
1285 | # else | |
1286 | close(fd); | |
1287 | # endif /* WIN32 */ | |
1288 | ||
1289 | return (-1); | |
1290 | } | |
1291 | #endif /* !HAVE_RRESVPORT_AF */ | |
1292 | ||
1293 | ||
1294 | /* | |
1295 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the backend. | |
1296 | */ | |
1297 | ||
1298 | static void | |
1299 | sigterm_handler(int sig) /* I - Signal */ | |
1300 | { | |
1301 | (void)sig; /* remove compiler warnings... */ | |
1302 | ||
1303 | abort_job = 1; | |
1304 | } | |
1305 | ||
1306 | ||
1307 | /* | |
bc44d920 | 1308 | * End of "$Id: lpd.c 6649 2007-07-11 21:46:42Z mike $". |
ef416fc2 | 1309 | */ |