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ef416fc2 | 1 | /* |
b19ccc9e | 2 | * "$Id: lpd.c 7740 2008-07-14 23:58:05Z mike $" |
ef416fc2 | 3 | * |
4 | * Line Printer Daemon backend for the Common UNIX Printing System (CUPS). | |
5 | * | |
080811b1 | 6 | * Copyright 2007-2008 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 | ||
ef416fc2 | 32 | #include <cups/http-private.h> |
7a14d768 | 33 | #include "backend-private.h" |
ef416fc2 | 34 | #include <stdarg.h> |
ef416fc2 | 35 | #include <sys/types.h> |
36 | #include <sys/stat.h> | |
ef416fc2 | 37 | |
38 | #ifdef WIN32 | |
39 | # include <winsock.h> | |
40 | #else | |
41 | # include <sys/socket.h> | |
42 | # include <netinet/in.h> | |
43 | # include <arpa/inet.h> | |
44 | # include <netdb.h> | |
45 | #endif /* WIN32 */ | |
fa73b229 | 46 | #ifdef __APPLE__ |
47 | # include <CoreFoundation/CFNumber.h> | |
48 | # include <CoreFoundation/CFPreferences.h> | |
49 | #endif /* __APPLE__ */ | |
ef416fc2 | 50 | |
51 | ||
52 | /* | |
53 | * Globals... | |
54 | */ | |
55 | ||
56 | static char tmpfilename[1024] = ""; /* Temporary spool file name */ | |
57 | static int abort_job = 0; /* Non-zero if we get SIGTERM */ | |
58 | ||
59 | ||
f42414bf | 60 | /* |
61 | * Print mode... | |
62 | */ | |
63 | ||
64 | #define MODE_STANDARD 0 /* Queue a copy */ | |
65 | #define MODE_STREAM 1 /* Stream a copy */ | |
66 | ||
67 | ||
ef416fc2 | 68 | /* |
69 | * The order for control and data files in LPD requests... | |
70 | */ | |
71 | ||
72 | #define ORDER_CONTROL_DATA 0 /* Control file first, then data */ | |
73 | #define ORDER_DATA_CONTROL 1 /* Data file first, then control */ | |
74 | ||
75 | ||
76 | /* | |
77 | * What to reserve... | |
78 | */ | |
79 | ||
80 | #define RESERVE_NONE 0 /* Don't reserve a priviledged port */ | |
81 | #define RESERVE_RFC1179 1 /* Reserve port 721-731 */ | |
82 | #define RESERVE_ANY 2 /* Reserve port 1-1023 */ | |
83 | ||
84 | ||
85 | /* | |
86 | * Local functions... | |
87 | */ | |
88 | ||
89 | static int lpd_command(int lpd_fd, int timeout, char *format, ...); | |
90 | static int lpd_queue(const char *hostname, int port, const char *printer, | |
f42414bf | 91 | int print_fd, int mode, const char *user, |
92 | const char *title, int copies, int banner, | |
93 | int format, int order, int reserve, | |
fa73b229 | 94 | int manual_copies, int timeout, int contimeout); |
ef416fc2 | 95 | static void lpd_timeout(int sig); |
96 | static int lpd_write(int lpd_fd, char *buffer, int length); | |
97 | #ifndef HAVE_RRESVPORT_AF | |
98 | static int rresvport_af(int *port, int family); | |
99 | #endif /* !HAVE_RRESVPORT_AF */ | |
100 | static void sigterm_handler(int sig); | |
101 | ||
102 | ||
103 | /* | |
104 | * 'main()' - Send a file to the printer or server. | |
105 | * | |
106 | * Usage: | |
107 | * | |
108 | * printer-uri job-id user title copies options [file] | |
109 | */ | |
110 | ||
111 | int /* O - Exit status */ | |
112 | main(int argc, /* I - Number of command-line arguments (6 or 7) */ | |
113 | char *argv[]) /* I - Command-line arguments */ | |
114 | { | |
1f0275e3 | 115 | const char *device_uri; /* Device URI */ |
7a14d768 MS |
116 | char method[255], /* Method in URI */ |
117 | hostname[1024], /* Hostname */ | |
118 | username[255], /* Username info */ | |
119 | resource[1024], /* Resource info (printer name) */ | |
120 | *options, /* Pointer to options */ | |
121 | *name, /* Name of option */ | |
122 | *value, /* Value of option */ | |
123 | sep, /* Separator character */ | |
124 | *filename, /* File to print */ | |
125 | title[256]; /* Title string */ | |
126 | int port; /* Port number */ | |
127 | int fd; /* Print file */ | |
128 | int status; /* Status of LPD job */ | |
129 | int mode; /* Print mode */ | |
130 | int banner; /* Print banner page? */ | |
131 | int format; /* Print format */ | |
132 | int order; /* Order of control/data files */ | |
133 | int reserve; /* Reserve priviledged port? */ | |
134 | int sanitize_title; /* Sanitize title string? */ | |
135 | int manual_copies, /* Do manual copies? */ | |
136 | timeout, /* Timeout */ | |
137 | contimeout, /* Connection timeout */ | |
138 | copies; /* Number of copies */ | |
ef416fc2 | 139 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
7a14d768 | 140 | struct sigaction action; /* Actions for POSIX signals */ |
ef416fc2 | 141 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ |
142 | ||
143 | ||
144 | /* | |
145 | * Make sure status messages are not buffered... | |
146 | */ | |
147 | ||
148 | setbuf(stderr, NULL); | |
149 | ||
150 | /* | |
151 | * Ignore SIGPIPE and catch SIGTERM signals... | |
152 | */ | |
153 | ||
154 | #ifdef HAVE_SIGSET | |
155 | sigset(SIGPIPE, SIG_IGN); | |
156 | sigset(SIGTERM, sigterm_handler); | |
157 | #elif defined(HAVE_SIGACTION) | |
158 | memset(&action, 0, sizeof(action)); | |
159 | action.sa_handler = SIG_IGN; | |
160 | sigaction(SIGPIPE, &action, NULL); | |
161 | ||
162 | sigemptyset(&action.sa_mask); | |
163 | sigaddset(&action.sa_mask, SIGTERM); | |
164 | action.sa_handler = sigterm_handler; | |
165 | sigaction(SIGTERM, &action, NULL); | |
166 | #else | |
167 | signal(SIGPIPE, SIG_IGN); | |
168 | signal(SIGTERM, sigterm_handler); | |
169 | #endif /* HAVE_SIGSET */ | |
170 | ||
171 | /* | |
172 | * Check command-line... | |
173 | */ | |
174 | ||
175 | if (argc == 1) | |
176 | { | |
177 | puts("network lpd \"Unknown\" \"LPD/LPR Host or Printer\""); | |
178 | return (CUPS_BACKEND_OK); | |
179 | } | |
180 | else if (argc < 6 || argc > 7) | |
181 | { | |
db1f069b MS |
182 | _cupsLangPrintf(stderr, |
183 | _("Usage: %s job-id user title copies options [file]\n"), | |
184 | argv[0]); | |
ef416fc2 | 185 | return (CUPS_BACKEND_FAILED); |
186 | } | |
187 | ||
ef416fc2 | 188 | /* |
189 | * Extract the hostname and printer name from the URI... | |
190 | */ | |
191 | ||
1f0275e3 MS |
192 | if ((device_uri = cupsBackendDeviceURI(argv)) == NULL) |
193 | return (CUPS_BACKEND_FAILED); | |
194 | ||
195 | httpSeparateURI(HTTP_URI_CODING_ALL, device_uri, | |
a4d04587 | 196 | method, sizeof(method), username, sizeof(username), |
197 | hostname, sizeof(hostname), &port, | |
ef416fc2 | 198 | resource, sizeof(resource)); |
199 | ||
a41f09e2 MS |
200 | if (!port) |
201 | port = 515; /* Default to port 515 */ | |
202 | ||
ef416fc2 | 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 | ||
db1f069b | 279 | name = options; |
ef416fc2 | 280 | |
db1f069b MS |
281 | while (*options && *options != '=' && *options != '+' && *options != '&') |
282 | options ++; | |
283 | ||
284 | if ((sep = *options) != '\0') | |
285 | *options++ = '\0'; | |
286 | ||
287 | if (sep == '=') | |
ef416fc2 | 288 | { |
289 | /* | |
290 | * Get the value... | |
291 | */ | |
292 | ||
db1f069b | 293 | value = options; |
ef416fc2 | 294 | |
db1f069b | 295 | while (*options && *options != '+' && *options != '&') |
ef416fc2 | 296 | options ++; |
db1f069b MS |
297 | |
298 | if (*options) | |
299 | *options++ = '\0'; | |
ef416fc2 | 300 | } |
301 | else | |
db1f069b | 302 | value = (char *)""; |
ef416fc2 | 303 | |
304 | /* | |
305 | * Process the option... | |
306 | */ | |
307 | ||
fa73b229 | 308 | if (!strcasecmp(name, "banner")) |
ef416fc2 | 309 | { |
310 | /* | |
311 | * Set the banner... | |
312 | */ | |
313 | ||
fa73b229 | 314 | banner = !value[0] || !strcasecmp(value, "on") || |
315 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 316 | } |
fa73b229 | 317 | else if (!strcasecmp(name, "format") && value[0]) |
ef416fc2 | 318 | { |
319 | /* | |
320 | * Set output format... | |
321 | */ | |
322 | ||
fa73b229 | 323 | if (strchr("cdfglnoprtv", value[0])) |
ef416fc2 | 324 | format = value[0]; |
325 | else | |
db1f069b MS |
326 | _cupsLangPrintf(stderr, _("ERROR: Unknown format character \"%c\"\n"), |
327 | value[0]); | |
ef416fc2 | 328 | } |
f42414bf | 329 | else if (!strcasecmp(name, "mode") && value[0]) |
330 | { | |
331 | /* | |
332 | * Set control/data order... | |
333 | */ | |
334 | ||
335 | if (!strcasecmp(value, "standard")) | |
bc44d920 | 336 | mode = MODE_STANDARD; |
f42414bf | 337 | else if (!strcasecmp(value, "stream")) |
bc44d920 | 338 | mode = MODE_STREAM; |
f42414bf | 339 | else |
db1f069b MS |
340 | _cupsLangPrintf(stderr, _("ERROR: Unknown print mode \"%s\"\n"), |
341 | value); | |
f42414bf | 342 | } |
fa73b229 | 343 | else if (!strcasecmp(name, "order") && value[0]) |
ef416fc2 | 344 | { |
345 | /* | |
346 | * Set control/data order... | |
347 | */ | |
348 | ||
fa73b229 | 349 | if (!strcasecmp(value, "control,data")) |
ef416fc2 | 350 | order = ORDER_CONTROL_DATA; |
fa73b229 | 351 | else if (!strcasecmp(value, "data,control")) |
ef416fc2 | 352 | order = ORDER_DATA_CONTROL; |
353 | else | |
db1f069b MS |
354 | _cupsLangPrintf(stderr, _("ERROR: Unknown file order \"%s\"\n"), |
355 | value); | |
ef416fc2 | 356 | } |
fa73b229 | 357 | else if (!strcasecmp(name, "reserve")) |
ef416fc2 | 358 | { |
359 | /* | |
360 | * Set port reservation mode... | |
361 | */ | |
362 | ||
fa73b229 | 363 | if (!value[0] || !strcasecmp(value, "on") || |
364 | !strcasecmp(value, "yes") || !strcasecmp(value, "true") || | |
ef416fc2 | 365 | !strcasecmp(value, "rfc1179")) |
366 | reserve = RESERVE_RFC1179; | |
367 | else if (!strcasecmp(value, "any")) | |
368 | reserve = RESERVE_ANY; | |
369 | else | |
370 | reserve = RESERVE_NONE; | |
371 | } | |
fa73b229 | 372 | else if (!strcasecmp(name, "manual_copies")) |
ef416fc2 | 373 | { |
374 | /* | |
375 | * Set manual copies... | |
376 | */ | |
377 | ||
fa73b229 | 378 | manual_copies = !value[0] || !strcasecmp(value, "on") || |
379 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 380 | } |
fa73b229 | 381 | else if (!strcasecmp(name, "sanitize_title")) |
ef416fc2 | 382 | { |
383 | /* | |
384 | * Set sanitize title... | |
385 | */ | |
386 | ||
fa73b229 | 387 | sanitize_title = !value[0] || !strcasecmp(value, "on") || |
388 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 389 | } |
fa73b229 | 390 | else if (!strcasecmp(name, "timeout")) |
ef416fc2 | 391 | { |
392 | /* | |
393 | * Set the timeout... | |
394 | */ | |
395 | ||
396 | if (atoi(value) > 0) | |
397 | timeout = atoi(value); | |
398 | } | |
fa73b229 | 399 | else if (!strcasecmp(name, "contimeout")) |
400 | { | |
401 | /* | |
c0e1af83 | 402 | * Set the connection timeout... |
fa73b229 | 403 | */ |
404 | ||
405 | if (atoi(value) > 0) | |
406 | contimeout = atoi(value); | |
407 | } | |
ef416fc2 | 408 | } |
409 | } | |
410 | ||
f42414bf | 411 | if (mode == MODE_STREAM) |
412 | order = ORDER_CONTROL_DATA; | |
413 | ||
414 | /* | |
415 | * If we have 7 arguments, print the file named on the command-line. | |
416 | * Otherwise, copy stdin to a temporary file and print the temporary | |
417 | * file. | |
418 | */ | |
419 | ||
420 | if (argc == 6 && mode == MODE_STANDARD) | |
421 | { | |
422 | /* | |
423 | * Copy stdin to a temporary file... | |
424 | */ | |
425 | ||
426 | char buffer[8192]; /* Buffer for copying */ | |
427 | int bytes; /* Number of bytes read */ | |
428 | ||
429 | ||
430 | if ((fd = cupsTempFd(tmpfilename, sizeof(tmpfilename))) < 0) | |
431 | { | |
080811b1 | 432 | _cupsLangPrintError(_("ERROR: Unable to create temporary file")); |
f42414bf | 433 | return (CUPS_BACKEND_FAILED); |
434 | } | |
435 | ||
436 | while ((bytes = fread(buffer, 1, sizeof(buffer), stdin)) > 0) | |
437 | if (write(fd, buffer, bytes) < bytes) | |
438 | { | |
080811b1 | 439 | _cupsLangPrintError(_("ERROR: Unable to write to temporary file")); |
f42414bf | 440 | close(fd); |
441 | unlink(tmpfilename); | |
442 | return (CUPS_BACKEND_FAILED); | |
443 | } | |
f42414bf | 444 | } |
445 | else if (argc == 6) | |
446 | { | |
447 | /* | |
448 | * Stream from stdin... | |
449 | */ | |
450 | ||
451 | filename = NULL; | |
452 | fd = 0; | |
453 | } | |
454 | else | |
455 | { | |
456 | filename = argv[6]; | |
457 | fd = open(filename, O_RDONLY); | |
458 | ||
459 | if (fd == -1) | |
460 | { | |
db1f069b MS |
461 | _cupsLangPrintf(stderr, _("ERROR: Unable to open print file %s: %s\n"), |
462 | filename, strerror(errno)); | |
f42414bf | 463 | return (CUPS_BACKEND_FAILED); |
464 | } | |
465 | } | |
466 | ||
ef416fc2 | 467 | /* |
468 | * Sanitize the document title... | |
469 | */ | |
470 | ||
471 | strlcpy(title, argv[3], sizeof(title)); | |
472 | ||
473 | if (sanitize_title) | |
474 | { | |
475 | /* | |
476 | * Sanitize the title string so that we don't cause problems on | |
477 | * the remote end... | |
478 | */ | |
479 | ||
db1f069b MS |
480 | char *ptr; |
481 | ||
ef416fc2 | 482 | for (ptr = title; *ptr; ptr ++) |
483 | if (!isalnum(*ptr & 255) && !isspace(*ptr & 255)) | |
484 | *ptr = '_'; | |
485 | } | |
486 | ||
487 | /* | |
488 | * Queue the job... | |
489 | */ | |
490 | ||
491 | if (argc > 6) | |
492 | { | |
493 | if (manual_copies) | |
494 | { | |
495 | manual_copies = atoi(argv[4]); | |
496 | copies = 1; | |
497 | } | |
498 | else | |
499 | { | |
500 | manual_copies = 1; | |
501 | copies = atoi(argv[4]); | |
502 | } | |
503 | ||
f42414bf | 504 | status = lpd_queue(hostname, port, resource + 1, fd, mode, |
ef416fc2 | 505 | username, title, copies, |
fa73b229 | 506 | banner, format, order, reserve, manual_copies, |
507 | timeout, contimeout); | |
ef416fc2 | 508 | |
509 | if (!status) | |
510 | fprintf(stderr, "PAGE: 1 %d\n", atoi(argv[4])); | |
511 | } | |
512 | else | |
f42414bf | 513 | status = lpd_queue(hostname, port, resource + 1, fd, mode, |
ef416fc2 | 514 | username, title, 1, |
fa73b229 | 515 | banner, format, order, reserve, 1, |
516 | timeout, contimeout); | |
ef416fc2 | 517 | |
518 | /* | |
519 | * Remove the temporary file if necessary... | |
520 | */ | |
521 | ||
522 | if (tmpfilename[0]) | |
523 | unlink(tmpfilename); | |
524 | ||
f42414bf | 525 | if (fd) |
526 | close(fd); | |
527 | ||
ef416fc2 | 528 | /* |
529 | * Return the queue status... | |
530 | */ | |
531 | ||
532 | return (status); | |
533 | } | |
534 | ||
535 | ||
536 | /* | |
537 | * 'lpd_command()' - Send an LPR command sequence and wait for a reply. | |
538 | */ | |
539 | ||
540 | static int /* O - Status of command */ | |
541 | lpd_command(int fd, /* I - Socket connection to LPD host */ | |
542 | int timeout, /* I - Seconds to wait for a response */ | |
543 | char *format, /* I - printf()-style format string */ | |
544 | ...) /* I - Additional args as necessary */ | |
545 | { | |
546 | va_list ap; /* Argument pointer */ | |
547 | char buf[1024]; /* Output buffer */ | |
548 | int bytes; /* Number of bytes to output */ | |
549 | char status; /* Status from command */ | |
550 | ||
551 | ||
552 | /* | |
553 | * Don't try to send commands if the job has been cancelled... | |
554 | */ | |
555 | ||
556 | if (abort_job) | |
557 | return (-1); | |
558 | ||
559 | /* | |
560 | * Format the string... | |
561 | */ | |
562 | ||
563 | va_start(ap, format); | |
564 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
565 | va_end(ap); | |
566 | ||
567 | fprintf(stderr, "DEBUG: lpd_command %2.2x %s", buf[0], buf + 1); | |
568 | ||
569 | /* | |
570 | * Send the command... | |
571 | */ | |
572 | ||
573 | fprintf(stderr, "DEBUG: Sending command string (%d bytes)...\n", bytes); | |
574 | ||
575 | if (lpd_write(fd, buf, bytes) < bytes) | |
576 | { | |
080811b1 | 577 | _cupsLangPrintError(_("ERROR: Unable to send LPD command")); |
ef416fc2 | 578 | return (-1); |
579 | } | |
580 | ||
581 | /* | |
582 | * Read back the status from the command and return it... | |
583 | */ | |
584 | ||
c0e1af83 | 585 | fputs("DEBUG: Reading command status...\n", stderr); |
ef416fc2 | 586 | |
587 | alarm(timeout); | |
588 | ||
589 | if (recv(fd, &status, 1, 0) < 1) | |
590 | { | |
db1f069b MS |
591 | _cupsLangPrintf(stderr, |
592 | _("WARNING: Remote host did not respond with command " | |
593 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 594 | status = errno; |
595 | } | |
596 | ||
597 | alarm(0); | |
598 | ||
599 | fprintf(stderr, "DEBUG: lpd_command returning %d\n", status); | |
600 | ||
601 | return (status); | |
602 | } | |
603 | ||
604 | ||
605 | /* | |
606 | * 'lpd_queue()' - Queue a file using the Line Printer Daemon protocol. | |
607 | */ | |
608 | ||
609 | static int /* O - Zero on success, non-zero on failure */ | |
610 | lpd_queue(const char *hostname, /* I - Host to connect to */ | |
611 | int port, /* I - Port to connect on */ | |
612 | const char *printer, /* I - Printer/queue name */ | |
f42414bf | 613 | int print_fd, /* I - File to print */ |
614 | int mode, /* I - Print mode */ | |
ef416fc2 | 615 | const char *user, /* I - Requesting user */ |
616 | const char *title, /* I - Job title */ | |
617 | int copies, /* I - Number of copies */ | |
618 | int banner, /* I - Print LPD banner? */ | |
619 | int format, /* I - Format specifier */ | |
620 | int order, /* I - Order of data/control files */ | |
621 | int reserve, /* I - Reserve ports? */ | |
622 | int manual_copies, /* I - Do copies by hand... */ | |
fa73b229 | 623 | int timeout, /* I - Timeout... */ |
624 | int contimeout) /* I - Connection timeout */ | |
ef416fc2 | 625 | { |
ef416fc2 | 626 | char localhost[255]; /* Local host name */ |
627 | int error; /* Error number */ | |
628 | struct stat filestats; /* File statistics */ | |
629 | int lport; /* LPD connection local port */ | |
630 | int fd; /* LPD socket */ | |
631 | char control[10240], /* LPD control 'file' */ | |
632 | *cptr; /* Pointer into control file string */ | |
633 | char status; /* Status byte from command */ | |
634 | char portname[255]; /* Port name */ | |
c0e1af83 | 635 | int delay; /* Delay for retries... */ |
26d47ec6 | 636 | char addrname[256]; /* Address name */ |
ef416fc2 | 637 | http_addrlist_t *addrlist, /* Address list */ |
638 | *addr; /* Socket address */ | |
7a14d768 MS |
639 | int snmp_fd, /* SNMP socket */ |
640 | start_count, /* Page count via SNMP at start */ | |
641 | page_count; /* Page count via SNMP */ | |
ef416fc2 | 642 | int copy; /* Copies written */ |
fa73b229 | 643 | time_t start_time; /* Time of first connect */ |
fa73b229 | 644 | int recoverable; /* Recoverable error shown? */ |
ef416fc2 | 645 | size_t nbytes; /* Number of bytes written */ |
646 | off_t tbytes; /* Total bytes written */ | |
a74454a7 | 647 | char buffer[32768]; /* Output buffer */ |
ef416fc2 | 648 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
649 | struct sigaction action; /* Actions for POSIX signals */ | |
650 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
651 | ||
652 | ||
653 | /* | |
654 | * Setup an alarm handler for timeouts... | |
655 | */ | |
656 | ||
657 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
658 | sigset(SIGALRM, lpd_timeout); | |
659 | #elif defined(HAVE_SIGACTION) | |
660 | memset(&action, 0, sizeof(action)); | |
661 | ||
662 | sigemptyset(&action.sa_mask); | |
663 | action.sa_handler = lpd_timeout; | |
664 | sigaction(SIGALRM, &action, NULL); | |
665 | #else | |
666 | signal(SIGALRM, lpd_timeout); | |
667 | #endif /* HAVE_SIGSET */ | |
668 | ||
669 | /* | |
670 | * Find the printer... | |
671 | */ | |
672 | ||
673 | sprintf(portname, "%d", port); | |
674 | ||
675 | if ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
676 | { | |
db1f069b MS |
677 | _cupsLangPrintf(stderr, _("ERROR: Unable to locate printer \'%s\'!\n"), |
678 | hostname); | |
ef416fc2 | 679 | return (CUPS_BACKEND_STOP); |
680 | } | |
681 | ||
fa73b229 | 682 | /* |
c0e1af83 | 683 | * Remember when we started trying to connect to the printer... |
fa73b229 | 684 | */ |
685 | ||
fa73b229 | 686 | recoverable = 0; |
fa73b229 | 687 | start_time = time(NULL); |
688 | ||
ef416fc2 | 689 | /* |
690 | * Loop forever trying to print the file... | |
691 | */ | |
692 | ||
693 | while (!abort_job) | |
694 | { | |
695 | /* | |
696 | * First try to reserve a port for this connection... | |
697 | */ | |
698 | ||
757d2cad | 699 | fputs("STATE: +connecting-to-device\n", stderr); |
db1f069b | 700 | _cupsLangPrintf(stderr, |
e6013cfa | 701 | _("INFO: Connecting to %s for printer %s\n"), |
db1f069b | 702 | hostname, printer); |
ef416fc2 | 703 | |
c0e1af83 | 704 | for (lport = reserve == RESERVE_RFC1179 ? 732 : 1024, addr = addrlist, |
705 | delay = 5;; | |
ef416fc2 | 706 | addr = addr->next) |
707 | { | |
708 | /* | |
709 | * Stop if this job has been cancelled... | |
710 | */ | |
711 | ||
712 | if (abort_job) | |
713 | { | |
714 | httpAddrFreeList(addrlist); | |
715 | ||
716 | return (CUPS_BACKEND_FAILED); | |
717 | } | |
718 | ||
719 | /* | |
720 | * Choose the next priviledged port... | |
721 | */ | |
722 | ||
723 | if (!addr) | |
724 | addr = addrlist; | |
725 | ||
726 | lport --; | |
727 | ||
728 | if (lport < 721 && reserve == RESERVE_RFC1179) | |
729 | lport = 731; | |
730 | else if (lport < 1) | |
731 | lport = 1023; | |
732 | ||
733 | #ifdef HAVE_GETEUID | |
734 | if (geteuid() || !reserve) | |
735 | #else | |
736 | if (getuid() || !reserve) | |
737 | #endif /* HAVE_GETEUID */ | |
738 | { | |
739 | /* | |
740 | * Just create a regular socket... | |
741 | */ | |
742 | ||
743 | if ((fd = socket(addr->addr.addr.sa_family, SOCK_STREAM, 0)) < 0) | |
744 | { | |
080811b1 | 745 | _cupsLangPrintError(_("ERROR: Unable to create socket")); |
ef416fc2 | 746 | sleep(1); |
747 | ||
748 | continue; | |
749 | } | |
750 | ||
751 | lport = 0; | |
752 | } | |
753 | else | |
754 | { | |
755 | /* | |
756 | * We're running as root and want to comply with RFC 1179. Reserve a | |
757 | * priviledged lport between 721 and 731... | |
758 | */ | |
759 | ||
760 | if ((fd = rresvport_af(&lport, addr->addr.addr.sa_family)) < 0) | |
761 | { | |
080811b1 | 762 | _cupsLangPrintError(_("ERROR: Unable to reserve port")); |
ef416fc2 | 763 | sleep(1); |
764 | ||
765 | continue; | |
766 | } | |
767 | } | |
768 | ||
769 | /* | |
770 | * Connect to the printer or server... | |
771 | */ | |
772 | ||
773 | if (abort_job) | |
774 | { | |
775 | httpAddrFreeList(addrlist); | |
776 | ||
777 | close(fd); | |
778 | ||
779 | return (CUPS_BACKEND_FAILED); | |
780 | } | |
781 | ||
782 | if (!connect(fd, &(addr->addr.addr), httpAddrLength(&(addr->addr)))) | |
783 | break; | |
784 | ||
785 | error = errno; | |
786 | close(fd); | |
787 | fd = -1; | |
788 | ||
789 | if (addr->next) | |
790 | continue; | |
791 | ||
792 | if (getenv("CLASS") != NULL) | |
793 | { | |
794 | /* | |
795 | * If the CLASS environment variable is set, the job was submitted | |
796 | * to a class and not to a specific queue. In this case, we want | |
797 | * to abort immediately so that the job can be requeued on the next | |
798 | * available printer in the class. | |
799 | */ | |
800 | ||
db1f069b MS |
801 | _cupsLangPuts(stderr, |
802 | _("INFO: Unable to contact printer, queuing on next " | |
803 | "printer in class...\n")); | |
ef416fc2 | 804 | |
805 | httpAddrFreeList(addrlist); | |
806 | ||
807 | /* | |
808 | * Sleep 5 seconds to keep the job from requeuing too rapidly... | |
809 | */ | |
810 | ||
811 | sleep(5); | |
812 | ||
813 | return (CUPS_BACKEND_FAILED); | |
814 | } | |
815 | ||
816 | if (error == ECONNREFUSED || error == EHOSTDOWN || | |
817 | error == EHOSTUNREACH) | |
818 | { | |
fa73b229 | 819 | if (contimeout && (time(NULL) - start_time) > contimeout) |
820 | { | |
db1f069b | 821 | _cupsLangPuts(stderr, _("ERROR: Printer not responding!\n")); |
fa73b229 | 822 | return (CUPS_BACKEND_FAILED); |
823 | } | |
824 | ||
fa73b229 | 825 | recoverable = 1; |
c0e1af83 | 826 | |
db1f069b MS |
827 | _cupsLangPrintf(stderr, |
828 | _("WARNING: recoverable: Network host \'%s\' is busy; " | |
829 | "will retry in %d seconds...\n"), hostname, delay); | |
c0e1af83 | 830 | |
831 | sleep(delay); | |
832 | ||
833 | if (delay < 30) | |
834 | delay += 5; | |
ef416fc2 | 835 | } |
836 | else if (error == EADDRINUSE) | |
837 | { | |
838 | /* | |
839 | * Try on another port... | |
840 | */ | |
841 | ||
842 | sleep(1); | |
843 | } | |
844 | else | |
845 | { | |
fa73b229 | 846 | recoverable = 1; |
c0e1af83 | 847 | |
848 | fprintf(stderr, "DEBUG: Connection error: %s\n", strerror(errno)); | |
db1f069b MS |
849 | _cupsLangPuts(stderr, |
850 | _("ERROR: recoverable: Unable to connect to printer; " | |
851 | "will retry in 30 seconds...\n")); | |
c0e1af83 | 852 | sleep(30); |
ef416fc2 | 853 | } |
854 | } | |
855 | ||
fa73b229 | 856 | if (recoverable) |
857 | { | |
858 | /* | |
859 | * If we've shown a recoverable error make sure the printer proxies | |
860 | * have a chance to see the recovered message. Not pretty but | |
861 | * necessary for now... | |
862 | */ | |
863 | ||
864 | fputs("INFO: recovered: \n", stderr); | |
865 | sleep(5); | |
866 | } | |
fa73b229 | 867 | |
757d2cad | 868 | fputs("STATE: -connecting-to-device\n", stderr); |
db1f069b | 869 | _cupsLangPrintf(stderr, _("INFO: Connected to %s...\n"), hostname); |
26d47ec6 | 870 | |
871 | #ifdef AF_INET6 | |
872 | if (addr->addr.addr.sa_family == AF_INET6) | |
873 | fprintf(stderr, "DEBUG: Connected to [%s]:%d (IPv6) (local port %d)...\n", | |
c0e1af83 | 874 | httpAddrString(&addr->addr, addrname, sizeof(addrname)), |
875 | ntohs(addr->addr.ipv6.sin6_port), lport); | |
26d47ec6 | 876 | else |
877 | #endif /* AF_INET6 */ | |
878 | if (addr->addr.addr.sa_family == AF_INET) | |
879 | fprintf(stderr, "DEBUG: Connected to %s:%d (IPv4) (local port %d)...\n", | |
c0e1af83 | 880 | httpAddrString(&addr->addr, addrname, sizeof(addrname)), |
881 | ntohs(addr->addr.ipv4.sin_port), lport); | |
ef416fc2 | 882 | |
7a14d768 MS |
883 | /* |
884 | * See if the printer supports SNMP... | |
885 | */ | |
886 | ||
887 | if ((snmp_fd = _cupsSNMPOpen(addr->addr.addr.sa_family)) >= 0) | |
1f0275e3 | 888 | { |
7a14d768 MS |
889 | if (backendSNMPSupplies(snmp_fd, &(addr->addr), &start_count, NULL)) |
890 | { | |
891 | /* | |
892 | * No, close it... | |
893 | */ | |
894 | ||
895 | _cupsSNMPClose(snmp_fd); | |
896 | snmp_fd = -1; | |
897 | } | |
1f0275e3 MS |
898 | } |
899 | else | |
900 | start_count = 0; | |
7a14d768 MS |
901 | |
902 | /* | |
903 | * Check for side-channel requests... | |
904 | */ | |
905 | ||
906 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
907 | ||
ef416fc2 | 908 | /* |
909 | * Next, open the print file and figure out its size... | |
910 | */ | |
911 | ||
f42414bf | 912 | if (print_fd) |
ef416fc2 | 913 | { |
c0e1af83 | 914 | /* |
915 | * Use the size from the print file... | |
916 | */ | |
917 | ||
f42414bf | 918 | if (fstat(print_fd, &filestats)) |
919 | { | |
920 | httpAddrFreeList(addrlist); | |
921 | close(fd); | |
ef416fc2 | 922 | |
080811b1 | 923 | _cupsLangPrintError(_("ERROR: unable to stat print file")); |
f42414bf | 924 | return (CUPS_BACKEND_FAILED); |
925 | } | |
ef416fc2 | 926 | |
f42414bf | 927 | filestats.st_size *= manual_copies; |
ef416fc2 | 928 | } |
f42414bf | 929 | else |
c0e1af83 | 930 | { |
931 | /* | |
932 | * Use a "very large value" for the size so that the printer will | |
933 | * keep printing until we close the connection... | |
934 | */ | |
935 | ||
f42414bf | 936 | #ifdef _LARGEFILE_SOURCE |
937 | filestats.st_size = (size_t)(999999999999.0); | |
938 | #else | |
939 | filestats.st_size = 2147483647; | |
940 | #endif /* _LARGEFILE_SOURCE */ | |
c0e1af83 | 941 | } |
ef416fc2 | 942 | |
943 | /* | |
944 | * Send a job header to the printer, specifying no banner page and | |
945 | * literal output... | |
946 | */ | |
947 | ||
948 | if (lpd_command(fd, timeout, "\002%s\n", | |
949 | printer)) /* Receive print job(s) */ | |
950 | { | |
951 | httpAddrFreeList(addrlist); | |
952 | close(fd); | |
953 | return (CUPS_BACKEND_FAILED); | |
954 | } | |
955 | ||
757d2cad | 956 | httpGetHostname(NULL, localhost, sizeof(localhost)); |
ef416fc2 | 957 | |
958 | snprintf(control, sizeof(control), | |
959 | "H%.31s\n" /* RFC 1179, Section 7.2 - host name <= 31 chars */ | |
960 | "P%.31s\n" /* RFC 1179, Section 7.2 - user name <= 31 chars */ | |
961 | "J%.99s\n", /* RFC 1179, Section 7.2 - job name <= 99 chars */ | |
962 | localhost, user, title); | |
963 | cptr = control + strlen(control); | |
964 | ||
965 | if (banner) | |
966 | { | |
967 | snprintf(cptr, sizeof(control) - (cptr - control), | |
968 | "C%.31s\n" /* RFC 1179, Section 7.2 - class name <= 31 chars */ | |
969 | "L%s\n", | |
970 | localhost, user); | |
971 | cptr += strlen(cptr); | |
972 | } | |
973 | ||
974 | while (copies > 0) | |
975 | { | |
976 | snprintf(cptr, sizeof(control) - (cptr - control), "%cdfA%03d%.15s\n", | |
977 | format, (int)getpid() % 1000, localhost); | |
978 | cptr += strlen(cptr); | |
979 | copies --; | |
980 | } | |
981 | ||
982 | snprintf(cptr, sizeof(control) - (cptr - control), | |
983 | "UdfA%03d%.15s\n" | |
984 | "N%.131s\n", /* RFC 1179, Section 7.2 - sourcefile name <= 131 chars */ | |
985 | (int)getpid() % 1000, localhost, title); | |
986 | ||
987 | fprintf(stderr, "DEBUG: Control file is:\n%s", control); | |
988 | ||
989 | if (order == ORDER_CONTROL_DATA) | |
990 | { | |
7a14d768 MS |
991 | /* |
992 | * Check for side-channel requests... | |
993 | */ | |
994 | ||
995 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
996 | ||
997 | /* | |
998 | * Send the control file... | |
999 | */ | |
1000 | ||
ef416fc2 | 1001 | if (lpd_command(fd, timeout, "\002%d cfA%03.3d%.15s\n", strlen(control), |
1002 | (int)getpid() % 1000, localhost)) | |
1003 | { | |
1004 | httpAddrFreeList(addrlist); | |
1005 | close(fd); | |
1006 | ||
1007 | return (CUPS_BACKEND_FAILED); | |
1008 | } | |
1009 | ||
db1f069b MS |
1010 | _cupsLangPrintf(stderr, _("INFO: Sending control file (%u bytes)\n"), |
1011 | (unsigned)strlen(control)); | |
ef416fc2 | 1012 | |
1013 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
1014 | { | |
1015 | status = errno; | |
080811b1 | 1016 | _cupsLangPrintError(_("ERROR: Unable to write control file")); |
ef416fc2 | 1017 | } |
1018 | else | |
1019 | { | |
1020 | alarm(timeout); | |
1021 | ||
1022 | if (read(fd, &status, 1) < 1) | |
1023 | { | |
db1f069b MS |
1024 | _cupsLangPrintf(stderr, |
1025 | _("WARNING: Remote host did not respond with control " | |
1026 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 1027 | status = errno; |
1028 | } | |
1029 | ||
1030 | alarm(0); | |
1031 | } | |
1032 | ||
1033 | if (status != 0) | |
db1f069b MS |
1034 | _cupsLangPrintf(stderr, |
1035 | _("ERROR: Remote host did not accept control file " | |
1036 | "(%d)\n"), status); | |
ef416fc2 | 1037 | else |
db1f069b | 1038 | _cupsLangPuts(stderr, _("INFO: Control file sent successfully\n")); |
ef416fc2 | 1039 | } |
1040 | else | |
1041 | status = 0; | |
1042 | ||
1043 | if (status == 0) | |
1044 | { | |
7a14d768 MS |
1045 | /* |
1046 | * Check for side-channel requests... | |
1047 | */ | |
1048 | ||
1049 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
1050 | ||
ef416fc2 | 1051 | /* |
1052 | * Send the print file... | |
1053 | */ | |
1054 | ||
1055 | if (lpd_command(fd, timeout, "\003" CUPS_LLFMT " dfA%03.3d%.15s\n", | |
1056 | CUPS_LLCAST filestats.st_size, (int)getpid() % 1000, | |
1057 | localhost)) | |
1058 | { | |
1059 | httpAddrFreeList(addrlist); | |
1060 | close(fd); | |
1061 | ||
1062 | return (CUPS_BACKEND_FAILED); | |
1063 | } | |
1064 | ||
db1f069b | 1065 | _cupsLangPrintf(stderr, |
c0e1af83 | 1066 | #ifdef HAVE_LONG_LONG |
db1f069b | 1067 | _("INFO: Sending data file (%lld bytes)\n"), |
c0e1af83 | 1068 | #else |
db1f069b | 1069 | _("INFO: Sending data file (%ld bytes)\n"), |
c0e1af83 | 1070 | #endif /* HAVE_LONG_LONG */ |
db1f069b | 1071 | CUPS_LLCAST filestats.st_size); |
ef416fc2 | 1072 | |
1073 | tbytes = 0; | |
1074 | for (copy = 0; copy < manual_copies; copy ++) | |
1075 | { | |
f42414bf | 1076 | lseek(print_fd, 0, SEEK_SET); |
ef416fc2 | 1077 | |
f42414bf | 1078 | while ((nbytes = read(print_fd, buffer, sizeof(buffer))) > 0) |
ef416fc2 | 1079 | { |
db1f069b MS |
1080 | _cupsLangPrintf(stderr, |
1081 | _("INFO: Spooling LPR job, %.0f%% complete...\n"), | |
1082 | 100.0 * tbytes / filestats.st_size); | |
ef416fc2 | 1083 | |
1084 | if (lpd_write(fd, buffer, nbytes) < nbytes) | |
1085 | { | |
080811b1 | 1086 | _cupsLangPrintError(_("ERROR: Unable to send print file to printer")); |
ef416fc2 | 1087 | break; |
1088 | } | |
1089 | else | |
1090 | tbytes += nbytes; | |
1091 | } | |
1092 | } | |
1093 | ||
f42414bf | 1094 | if (mode == MODE_STANDARD) |
ef416fc2 | 1095 | { |
f42414bf | 1096 | if (tbytes < filestats.st_size) |
1097 | status = errno; | |
1098 | else if (lpd_write(fd, "", 1) < 1) | |
1099 | { | |
080811b1 | 1100 | _cupsLangPrintError(_("ERROR: Unable to send trailing nul to printer")); |
f42414bf | 1101 | status = errno; |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | /* | |
1106 | * Read the status byte from the printer; if we can't read the byte | |
1107 | * back now, we should set status to "errno", however at this point | |
1108 | * we know the printer got the whole file and we don't necessarily | |
1109 | * want to requeue it over and over... | |
1110 | */ | |
ef416fc2 | 1111 | |
f42414bf | 1112 | alarm(timeout); |
ef416fc2 | 1113 | |
f42414bf | 1114 | if (recv(fd, &status, 1, 0) < 1) |
1115 | { | |
db1f069b MS |
1116 | _cupsLangPrintf(stderr, |
1117 | _("WARNING: Remote host did not respond with data " | |
1118 | "status byte after %d seconds!\n"), timeout); | |
f42414bf | 1119 | status = 0; |
1120 | } | |
ef416fc2 | 1121 | |
f42414bf | 1122 | alarm(0); |
1123 | } | |
ef416fc2 | 1124 | } |
f42414bf | 1125 | else |
1126 | status = 0; | |
ef416fc2 | 1127 | |
1128 | if (status != 0) | |
db1f069b MS |
1129 | _cupsLangPrintf(stderr, |
1130 | _("ERROR: Remote host did not accept data file (%d)\n"), | |
1131 | status); | |
ef416fc2 | 1132 | else |
db1f069b | 1133 | _cupsLangPuts(stderr, _("INFO: Data file sent successfully\n")); |
ef416fc2 | 1134 | } |
1135 | ||
1136 | if (status == 0 && order == ORDER_DATA_CONTROL) | |
1137 | { | |
7a14d768 MS |
1138 | /* |
1139 | * Check for side-channel requests... | |
1140 | */ | |
1141 | ||
1142 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
1143 | ||
1144 | /* | |
1145 | * Send control file... | |
1146 | */ | |
1147 | ||
ef416fc2 | 1148 | if (lpd_command(fd, timeout, "\002%d cfA%03.3d%.15s\n", strlen(control), |
1149 | (int)getpid() % 1000, localhost)) | |
1150 | { | |
1151 | httpAddrFreeList(addrlist); | |
1152 | close(fd); | |
1153 | ||
1154 | return (CUPS_BACKEND_FAILED); | |
1155 | } | |
1156 | ||
db1f069b MS |
1157 | _cupsLangPrintf(stderr, _("INFO: Sending control file (%lu bytes)\n"), |
1158 | (unsigned long)strlen(control)); | |
ef416fc2 | 1159 | |
1160 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
1161 | { | |
1162 | status = errno; | |
080811b1 | 1163 | _cupsLangPrintError(_("ERROR: Unable to write control file")); |
ef416fc2 | 1164 | } |
1165 | else | |
1166 | { | |
1167 | alarm(timeout); | |
1168 | ||
1169 | if (read(fd, &status, 1) < 1) | |
1170 | { | |
db1f069b MS |
1171 | _cupsLangPrintf(stderr, |
1172 | _("WARNING: Remote host did not respond with control " | |
1173 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 1174 | status = errno; |
1175 | } | |
1176 | ||
1177 | alarm(0); | |
1178 | } | |
1179 | ||
1180 | if (status != 0) | |
db1f069b MS |
1181 | _cupsLangPrintf(stderr, |
1182 | _("ERROR: Remote host did not accept control file " | |
1183 | "(%d)\n"), status); | |
ef416fc2 | 1184 | else |
db1f069b | 1185 | _cupsLangPuts(stderr, _("INFO: Control file sent successfully\n")); |
ef416fc2 | 1186 | } |
1187 | ||
7a14d768 MS |
1188 | /* |
1189 | * Collect the final page count as needed... | |
1190 | */ | |
1191 | ||
1192 | if (snmp_fd >= 0) | |
1193 | { | |
1194 | int printer_state; /* State of printer */ | |
1195 | ||
1196 | ||
1197 | while (!backendSNMPSupplies(snmp_fd, &(addr->addr), &page_count, | |
1198 | &printer_state) && | |
1199 | printer_state != CUPS_TC_idle) | |
1200 | sleep(3); | |
1201 | ||
1202 | if (page_count > start_count) | |
1203 | fprintf(stderr, "PAGE: total %d\n", page_count - start_count); | |
1204 | } | |
1205 | ||
ef416fc2 | 1206 | /* |
1207 | * Close the socket connection and input file... | |
1208 | */ | |
1209 | ||
1210 | close(fd); | |
ef416fc2 | 1211 | |
1212 | if (status == 0) | |
1213 | { | |
1214 | httpAddrFreeList(addrlist); | |
1215 | ||
1216 | return (CUPS_BACKEND_OK); | |
1217 | } | |
1218 | ||
1219 | /* | |
1220 | * Waiting for a retry... | |
1221 | */ | |
1222 | ||
1223 | sleep(30); | |
1224 | } | |
1225 | ||
1226 | httpAddrFreeList(addrlist); | |
1227 | ||
1228 | /* | |
1229 | * If we get here, then the job has been cancelled... | |
1230 | */ | |
1231 | ||
1232 | return (CUPS_BACKEND_FAILED); | |
1233 | } | |
1234 | ||
1235 | ||
1236 | /* | |
1237 | * 'lpd_timeout()' - Handle timeout alarms... | |
1238 | */ | |
1239 | ||
1240 | static void | |
1241 | lpd_timeout(int sig) /* I - Signal number */ | |
1242 | { | |
1243 | (void)sig; | |
1244 | ||
1245 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1246 | signal(SIGALRM, lpd_timeout); | |
1247 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1248 | } | |
1249 | ||
1250 | ||
1251 | /* | |
1252 | * 'lpd_write()' - Write a buffer of data to an LPD server. | |
1253 | */ | |
1254 | ||
1255 | static int /* O - Number of bytes written or -1 on error */ | |
1256 | lpd_write(int lpd_fd, /* I - LPD socket */ | |
1257 | char *buffer, /* I - Buffer to write */ | |
1258 | int length) /* I - Number of bytes to write */ | |
1259 | { | |
1260 | int bytes, /* Number of bytes written */ | |
1261 | total; /* Total number of bytes written */ | |
1262 | ||
1263 | ||
1264 | if (abort_job) | |
1265 | return (-1); | |
1266 | ||
1267 | total = 0; | |
1268 | while ((bytes = send(lpd_fd, buffer, length - total, 0)) >= 0) | |
1269 | { | |
1270 | total += bytes; | |
1271 | buffer += bytes; | |
1272 | ||
1273 | if (total == length) | |
1274 | break; | |
1275 | } | |
1276 | ||
1277 | if (bytes < 0) | |
1278 | return (-1); | |
1279 | else | |
1280 | return (length); | |
1281 | } | |
1282 | ||
1283 | ||
1284 | #ifndef HAVE_RRESVPORT_AF | |
1285 | /* | |
1286 | * 'rresvport_af()' - A simple implementation of rresvport_af(). | |
1287 | */ | |
1288 | ||
1289 | static int /* O - Socket or -1 on error */ | |
1290 | rresvport_af(int *port, /* IO - Port number to bind to */ | |
1291 | int family) /* I - Address family */ | |
1292 | { | |
1293 | http_addr_t addr; /* Socket address */ | |
1294 | int fd; /* Socket file descriptor */ | |
1295 | ||
1296 | ||
1297 | /* | |
1298 | * Try to create an IPv4 socket... | |
1299 | */ | |
1300 | ||
1301 | if ((fd = socket(family, SOCK_STREAM, 0)) < 0) | |
1302 | return (-1); | |
1303 | ||
1304 | /* | |
1305 | * Initialize the address buffer... | |
1306 | */ | |
1307 | ||
1308 | memset(&addr, 0, sizeof(addr)); | |
1309 | addr.addr.sa_family = family; | |
1310 | ||
1311 | /* | |
1312 | * Try to bind the socket to a reserved port... | |
1313 | */ | |
1314 | ||
1315 | while (*port > 511) | |
1316 | { | |
1317 | /* | |
1318 | * Set the port number... | |
1319 | */ | |
1320 | ||
1321 | # ifdef AF_INET6 | |
1322 | if (family == AF_INET6) | |
1323 | addr.ipv6.sin6_port = htons(*port); | |
1324 | else | |
1325 | # endif /* AF_INET6 */ | |
1326 | addr.ipv4.sin_port = htons(*port); | |
1327 | ||
1328 | /* | |
1329 | * Try binding the port to the socket; return if all is OK... | |
1330 | */ | |
1331 | ||
1332 | if (!bind(fd, (struct sockaddr *)&addr, sizeof(addr))) | |
1333 | return (fd); | |
1334 | ||
1335 | /* | |
1336 | * Stop if we have any error other than "address already in use"... | |
1337 | */ | |
1338 | ||
1339 | if (errno != EADDRINUSE) | |
1340 | { | |
1341 | # ifdef WIN32 | |
1342 | closesocket(fd); | |
1343 | # else | |
1344 | close(fd); | |
1345 | # endif /* WIN32 */ | |
1346 | ||
1347 | return (-1); | |
1348 | } | |
1349 | ||
1350 | /* | |
1351 | * Try the next port... | |
1352 | */ | |
1353 | ||
1354 | (*port)--; | |
1355 | } | |
1356 | ||
1357 | /* | |
1358 | * Wasn't able to bind to a reserved port, so close the socket and return | |
1359 | * -1... | |
1360 | */ | |
1361 | ||
1362 | # ifdef WIN32 | |
1363 | closesocket(fd); | |
1364 | # else | |
1365 | close(fd); | |
1366 | # endif /* WIN32 */ | |
1367 | ||
1368 | return (-1); | |
1369 | } | |
1370 | #endif /* !HAVE_RRESVPORT_AF */ | |
1371 | ||
1372 | ||
1373 | /* | |
1374 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the backend. | |
1375 | */ | |
1376 | ||
1377 | static void | |
1378 | sigterm_handler(int sig) /* I - Signal */ | |
1379 | { | |
1380 | (void)sig; /* remove compiler warnings... */ | |
1381 | ||
1382 | abort_job = 1; | |
1383 | } | |
1384 | ||
1385 | ||
1386 | /* | |
b19ccc9e | 1387 | * End of "$Id: lpd.c 7740 2008-07-14 23:58:05Z mike $". |
ef416fc2 | 1388 | */ |