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ef416fc2 | 1 | /* |
b19ccc9e | 2 | * "$Id: lpd.c 7740 2008-07-14 23:58:05Z mike $" |
ef416fc2 | 3 | * |
0837b7e8 | 4 | * Line Printer Daemon backend for CUPS. |
ef416fc2 | 5 | * |
12f89d24 | 6 | * Copyright 2007-2012 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. | |
ef416fc2 | 22 | * lpd_write() - Write a buffer of data to an LPD server. |
23 | * rresvport_af() - A simple implementation of rresvport_af(). | |
24 | * sigterm_handler() - Handle 'terminate' signals that stop the backend. | |
25 | */ | |
26 | ||
27 | /* | |
28 | * Include necessary headers. | |
29 | */ | |
30 | ||
ef416fc2 | 31 | #include <cups/http-private.h> |
7a14d768 | 32 | #include "backend-private.h" |
ef416fc2 | 33 | #include <stdarg.h> |
ef416fc2 | 34 | #include <sys/types.h> |
35 | #include <sys/stat.h> | |
c7017ecc | 36 | #include <stdio.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 | ||
12f89d24 | 89 | static int lpd_command(int lpd_fd, char *format, ...); |
c8fef167 MS |
90 | static int lpd_queue(const char *hostname, http_addrlist_t *addrlist, |
91 | const char *printer, int print_fd, int snmp_fd, | |
92 | int mode, const char *user, const char *title, | |
93 | int copies, int banner, int format, int order, | |
94 | int reserve, int manual_copies, int timeout, | |
95 | int contimeout); | |
ef416fc2 | 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 */ |
acb056cb | 116 | char scheme[255], /* Scheme in URI */ |
7a14d768 MS |
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 */ | |
c8fef167 MS |
127 | char portname[256]; /* Port name (string) */ |
128 | http_addrlist_t *addrlist; /* List of addresses for printer */ | |
129 | int snmp_fd; /* SNMP socket */ | |
7a14d768 MS |
130 | int fd; /* Print file */ |
131 | int status; /* Status of LPD job */ | |
132 | int mode; /* Print mode */ | |
133 | int banner; /* Print banner page? */ | |
134 | int format; /* Print format */ | |
135 | int order; /* Order of control/data files */ | |
136 | int reserve; /* Reserve priviledged port? */ | |
137 | int sanitize_title; /* Sanitize title string? */ | |
138 | int manual_copies, /* Do manual copies? */ | |
139 | timeout, /* Timeout */ | |
140 | contimeout, /* Connection timeout */ | |
141 | copies; /* Number of copies */ | |
eac3a0a0 MS |
142 | ssize_t bytes = 0; /* Initial bytes read */ |
143 | char buffer[16384]; /* Initial print buffer */ | |
ef416fc2 | 144 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
7a14d768 | 145 | struct sigaction action; /* Actions for POSIX signals */ |
ef416fc2 | 146 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ |
147 | ||
148 | ||
149 | /* | |
150 | * Make sure status messages are not buffered... | |
151 | */ | |
152 | ||
153 | setbuf(stderr, NULL); | |
154 | ||
155 | /* | |
156 | * Ignore SIGPIPE and catch SIGTERM signals... | |
157 | */ | |
158 | ||
159 | #ifdef HAVE_SIGSET | |
160 | sigset(SIGPIPE, SIG_IGN); | |
161 | sigset(SIGTERM, sigterm_handler); | |
162 | #elif defined(HAVE_SIGACTION) | |
163 | memset(&action, 0, sizeof(action)); | |
164 | action.sa_handler = SIG_IGN; | |
165 | sigaction(SIGPIPE, &action, NULL); | |
166 | ||
167 | sigemptyset(&action.sa_mask); | |
168 | sigaddset(&action.sa_mask, SIGTERM); | |
169 | action.sa_handler = sigterm_handler; | |
170 | sigaction(SIGTERM, &action, NULL); | |
171 | #else | |
172 | signal(SIGPIPE, SIG_IGN); | |
173 | signal(SIGTERM, sigterm_handler); | |
174 | #endif /* HAVE_SIGSET */ | |
175 | ||
176 | /* | |
177 | * Check command-line... | |
178 | */ | |
179 | ||
180 | if (argc == 1) | |
181 | { | |
8b450588 MS |
182 | printf("network lpd \"Unknown\" \"%s\"\n", |
183 | _cupsLangString(cupsLangDefault(), _("LPD/LPR Host or Printer"))); | |
ef416fc2 | 184 | return (CUPS_BACKEND_OK); |
185 | } | |
186 | else if (argc < 6 || argc > 7) | |
187 | { | |
db1f069b | 188 | _cupsLangPrintf(stderr, |
0837b7e8 | 189 | _("Usage: %s job-id user title copies options [file]"), |
db1f069b | 190 | argv[0]); |
ef416fc2 | 191 | return (CUPS_BACKEND_FAILED); |
192 | } | |
193 | ||
ef416fc2 | 194 | /* |
195 | * Extract the hostname and printer name from the URI... | |
196 | */ | |
197 | ||
0268488e MS |
198 | while ((device_uri = cupsBackendDeviceURI(argv)) == NULL) |
199 | { | |
200 | _cupsLangPrintFilter(stderr, "INFO", _("Unable to locate printer.")); | |
201 | sleep(10); | |
202 | ||
203 | if (getenv("CLASS") != NULL) | |
204 | return (CUPS_BACKEND_FAILED); | |
205 | } | |
1f0275e3 | 206 | |
acb056cb MS |
207 | httpSeparateURI(HTTP_URI_CODING_ALL, device_uri, scheme, sizeof(scheme), |
208 | username, sizeof(username), hostname, sizeof(hostname), &port, | |
ef416fc2 | 209 | resource, sizeof(resource)); |
210 | ||
a41f09e2 MS |
211 | if (!port) |
212 | port = 515; /* Default to port 515 */ | |
213 | ||
ef416fc2 | 214 | if (!username[0]) |
215 | { | |
216 | /* | |
217 | * If no username is in the device URI, then use the print job user... | |
218 | */ | |
219 | ||
220 | strlcpy(username, argv[2], sizeof(username)); | |
221 | } | |
222 | ||
223 | /* | |
224 | * See if there are any options... | |
225 | */ | |
226 | ||
f42414bf | 227 | mode = MODE_STANDARD; |
fa73b229 | 228 | banner = 0; |
229 | format = 'l'; | |
230 | order = ORDER_CONTROL_DATA; | |
231 | reserve = RESERVE_ANY; | |
232 | manual_copies = 1; | |
233 | timeout = 300; | |
234 | contimeout = 7 * 24 * 60 * 60; | |
ef416fc2 | 235 | |
fa73b229 | 236 | #ifdef __APPLE__ |
c0e1af83 | 237 | /* |
0268488e | 238 | * We want to pass UTF-8 characters by default, not re-map them (3071945) |
c0e1af83 | 239 | */ |
240 | ||
fa73b229 | 241 | sanitize_title = 0; |
0268488e | 242 | #else |
c0e1af83 | 243 | /* |
0268488e | 244 | * Otherwise we want to re-map UTF-8 to "safe" characters by default... |
c0e1af83 | 245 | */ |
246 | ||
fa73b229 | 247 | sanitize_title = 1; |
248 | #endif /* __APPLE__ */ | |
ef416fc2 | 249 | |
250 | if ((options = strchr(resource, '?')) != NULL) | |
251 | { | |
252 | /* | |
253 | * Yup, terminate the device name string and move to the first | |
254 | * character of the options... | |
255 | */ | |
256 | ||
257 | *options++ = '\0'; | |
258 | ||
259 | /* | |
260 | * Parse options... | |
261 | */ | |
262 | ||
263 | while (*options) | |
264 | { | |
265 | /* | |
266 | * Get the name... | |
267 | */ | |
268 | ||
db1f069b | 269 | name = options; |
ef416fc2 | 270 | |
db1f069b MS |
271 | while (*options && *options != '=' && *options != '+' && *options != '&') |
272 | options ++; | |
273 | ||
274 | if ((sep = *options) != '\0') | |
275 | *options++ = '\0'; | |
276 | ||
277 | if (sep == '=') | |
ef416fc2 | 278 | { |
279 | /* | |
280 | * Get the value... | |
281 | */ | |
282 | ||
db1f069b | 283 | value = options; |
ef416fc2 | 284 | |
db1f069b | 285 | while (*options && *options != '+' && *options != '&') |
ef416fc2 | 286 | options ++; |
db1f069b MS |
287 | |
288 | if (*options) | |
289 | *options++ = '\0'; | |
ef416fc2 | 290 | } |
291 | else | |
db1f069b | 292 | value = (char *)""; |
ef416fc2 | 293 | |
294 | /* | |
295 | * Process the option... | |
296 | */ | |
297 | ||
88f9aafc | 298 | if (!_cups_strcasecmp(name, "banner")) |
ef416fc2 | 299 | { |
300 | /* | |
301 | * Set the banner... | |
302 | */ | |
303 | ||
88f9aafc MS |
304 | banner = !value[0] || !_cups_strcasecmp(value, "on") || |
305 | !_cups_strcasecmp(value, "yes") || !_cups_strcasecmp(value, "true"); | |
ef416fc2 | 306 | } |
88f9aafc | 307 | else if (!_cups_strcasecmp(name, "format") && value[0]) |
ef416fc2 | 308 | { |
309 | /* | |
310 | * Set output format... | |
311 | */ | |
312 | ||
fa73b229 | 313 | if (strchr("cdfglnoprtv", value[0])) |
ef416fc2 | 314 | format = value[0]; |
315 | else | |
0837b7e8 MS |
316 | _cupsLangPrintFilter(stderr, "ERROR", |
317 | _("Unknown format character: \"%c\"."), | |
318 | value[0]); | |
ef416fc2 | 319 | } |
88f9aafc | 320 | else if (!_cups_strcasecmp(name, "mode") && value[0]) |
f42414bf | 321 | { |
322 | /* | |
323 | * Set control/data order... | |
324 | */ | |
325 | ||
88f9aafc | 326 | if (!_cups_strcasecmp(value, "standard")) |
bc44d920 | 327 | mode = MODE_STANDARD; |
88f9aafc | 328 | else if (!_cups_strcasecmp(value, "stream")) |
bc44d920 | 329 | mode = MODE_STREAM; |
f42414bf | 330 | else |
0837b7e8 MS |
331 | _cupsLangPrintFilter(stderr, "ERROR", |
332 | _("Unknown print mode: \"%s\"."), value); | |
f42414bf | 333 | } |
88f9aafc | 334 | else if (!_cups_strcasecmp(name, "order") && value[0]) |
ef416fc2 | 335 | { |
336 | /* | |
337 | * Set control/data order... | |
338 | */ | |
339 | ||
88f9aafc | 340 | if (!_cups_strcasecmp(value, "control,data")) |
ef416fc2 | 341 | order = ORDER_CONTROL_DATA; |
88f9aafc | 342 | else if (!_cups_strcasecmp(value, "data,control")) |
ef416fc2 | 343 | order = ORDER_DATA_CONTROL; |
344 | else | |
0837b7e8 MS |
345 | _cupsLangPrintFilter(stderr, "ERROR", |
346 | _("Unknown file order: \"%s\"."), value); | |
ef416fc2 | 347 | } |
88f9aafc | 348 | else if (!_cups_strcasecmp(name, "reserve")) |
ef416fc2 | 349 | { |
350 | /* | |
351 | * Set port reservation mode... | |
352 | */ | |
353 | ||
88f9aafc MS |
354 | if (!value[0] || !_cups_strcasecmp(value, "on") || |
355 | !_cups_strcasecmp(value, "yes") || !_cups_strcasecmp(value, "true") || | |
356 | !_cups_strcasecmp(value, "rfc1179")) | |
ef416fc2 | 357 | reserve = RESERVE_RFC1179; |
88f9aafc | 358 | else if (!_cups_strcasecmp(value, "any")) |
ef416fc2 | 359 | reserve = RESERVE_ANY; |
360 | else | |
361 | reserve = RESERVE_NONE; | |
362 | } | |
88f9aafc | 363 | else if (!_cups_strcasecmp(name, "manual_copies")) |
ef416fc2 | 364 | { |
365 | /* | |
366 | * Set manual copies... | |
367 | */ | |
368 | ||
88f9aafc MS |
369 | manual_copies = !value[0] || !_cups_strcasecmp(value, "on") || |
370 | !_cups_strcasecmp(value, "yes") || !_cups_strcasecmp(value, "true"); | |
ef416fc2 | 371 | } |
88f9aafc | 372 | else if (!_cups_strcasecmp(name, "sanitize_title")) |
ef416fc2 | 373 | { |
374 | /* | |
375 | * Set sanitize title... | |
376 | */ | |
377 | ||
88f9aafc MS |
378 | sanitize_title = !value[0] || !_cups_strcasecmp(value, "on") || |
379 | !_cups_strcasecmp(value, "yes") || !_cups_strcasecmp(value, "true"); | |
ef416fc2 | 380 | } |
88f9aafc | 381 | else if (!_cups_strcasecmp(name, "timeout")) |
ef416fc2 | 382 | { |
383 | /* | |
384 | * Set the timeout... | |
385 | */ | |
386 | ||
387 | if (atoi(value) > 0) | |
388 | timeout = atoi(value); | |
389 | } | |
88f9aafc | 390 | else if (!_cups_strcasecmp(name, "contimeout")) |
fa73b229 | 391 | { |
392 | /* | |
c0e1af83 | 393 | * Set the connection timeout... |
fa73b229 | 394 | */ |
395 | ||
396 | if (atoi(value) > 0) | |
397 | contimeout = atoi(value); | |
398 | } | |
ef416fc2 | 399 | } |
400 | } | |
401 | ||
f42414bf | 402 | if (mode == MODE_STREAM) |
403 | order = ORDER_CONTROL_DATA; | |
404 | ||
c8fef167 MS |
405 | /* |
406 | * Find the printer... | |
407 | */ | |
408 | ||
409 | snprintf(portname, sizeof(portname), "%d", port); | |
410 | ||
411 | fputs("STATE: +connecting-to-device\n", stderr); | |
412 | fprintf(stderr, "DEBUG: Looking up \"%s\"...\n", hostname); | |
413 | ||
414 | while ((addrlist = httpAddrGetList(hostname, AF_UNSPEC, portname)) == NULL) | |
415 | { | |
416 | _cupsLangPrintFilter(stderr, "INFO", | |
417 | _("Unable to locate printer \"%s\"."), hostname); | |
418 | sleep(10); | |
419 | ||
420 | if (getenv("CLASS") != NULL) | |
421 | { | |
422 | fputs("STATE: -connecting-to-device\n", stderr); | |
423 | exit(CUPS_BACKEND_FAILED); | |
424 | } | |
425 | } | |
426 | ||
427 | snmp_fd = _cupsSNMPOpen(addrlist->addr.addr.sa_family); | |
428 | ||
429 | /* | |
430 | * Wait for data from the filter... | |
431 | */ | |
432 | ||
433 | if (argc == 6) | |
eac3a0a0 | 434 | { |
f14324a7 | 435 | if (!backendWaitLoop(snmp_fd, &(addrlist->addr), 0, backendNetworkSideCB)) |
c8fef167 | 436 | return (CUPS_BACKEND_OK); |
eac3a0a0 MS |
437 | else if (mode == MODE_STANDARD && |
438 | (bytes = read(0, buffer, sizeof(buffer))) <= 0) | |
439 | return (CUPS_BACKEND_OK); | |
440 | } | |
c8fef167 | 441 | |
f42414bf | 442 | /* |
443 | * If we have 7 arguments, print the file named on the command-line. | |
444 | * Otherwise, copy stdin to a temporary file and print the temporary | |
445 | * file. | |
446 | */ | |
447 | ||
448 | if (argc == 6 && mode == MODE_STANDARD) | |
449 | { | |
450 | /* | |
451 | * Copy stdin to a temporary file... | |
452 | */ | |
453 | ||
f42414bf | 454 | if ((fd = cupsTempFd(tmpfilename, sizeof(tmpfilename))) < 0) |
455 | { | |
c7017ecc | 456 | perror("DEBUG: Unable to create temporary file"); |
f42414bf | 457 | return (CUPS_BACKEND_FAILED); |
458 | } | |
459 | ||
0837b7e8 | 460 | _cupsLangPrintFilter(stderr, "INFO", _("Copying print data.")); |
8b116e60 | 461 | |
eac3a0a0 MS |
462 | if (bytes > 0) |
463 | write(fd, buffer, bytes); | |
464 | ||
465 | backendRunLoop(-1, fd, snmp_fd, &(addrlist->addr), 0, 0, | |
ef55b745 | 466 | backendNetworkSideCB); |
f42414bf | 467 | } |
468 | else if (argc == 6) | |
469 | { | |
470 | /* | |
471 | * Stream from stdin... | |
472 | */ | |
473 | ||
474 | filename = NULL; | |
475 | fd = 0; | |
476 | } | |
477 | else | |
478 | { | |
479 | filename = argv[6]; | |
480 | fd = open(filename, O_RDONLY); | |
481 | ||
482 | if (fd == -1) | |
483 | { | |
0837b7e8 | 484 | _cupsLangPrintError("ERROR", _("Unable to open print file")); |
f42414bf | 485 | return (CUPS_BACKEND_FAILED); |
486 | } | |
487 | } | |
488 | ||
ef416fc2 | 489 | /* |
490 | * Sanitize the document title... | |
491 | */ | |
492 | ||
493 | strlcpy(title, argv[3], sizeof(title)); | |
494 | ||
495 | if (sanitize_title) | |
496 | { | |
497 | /* | |
498 | * Sanitize the title string so that we don't cause problems on | |
499 | * the remote end... | |
500 | */ | |
501 | ||
db1f069b MS |
502 | char *ptr; |
503 | ||
ef416fc2 | 504 | for (ptr = title; *ptr; ptr ++) |
505 | if (!isalnum(*ptr & 255) && !isspace(*ptr & 255)) | |
506 | *ptr = '_'; | |
507 | } | |
508 | ||
509 | /* | |
510 | * Queue the job... | |
511 | */ | |
512 | ||
513 | if (argc > 6) | |
514 | { | |
515 | if (manual_copies) | |
516 | { | |
517 | manual_copies = atoi(argv[4]); | |
518 | copies = 1; | |
519 | } | |
520 | else | |
521 | { | |
522 | manual_copies = 1; | |
523 | copies = atoi(argv[4]); | |
524 | } | |
525 | ||
c8fef167 MS |
526 | status = lpd_queue(hostname, addrlist, resource + 1, fd, snmp_fd, mode, |
527 | username, title, copies, banner, format, order, reserve, | |
528 | manual_copies, timeout, contimeout); | |
ef416fc2 | 529 | |
530 | if (!status) | |
531 | fprintf(stderr, "PAGE: 1 %d\n", atoi(argv[4])); | |
532 | } | |
533 | else | |
c8fef167 MS |
534 | status = lpd_queue(hostname, addrlist, resource + 1, fd, snmp_fd, mode, |
535 | username, title, 1, banner, format, order, reserve, 1, | |
fa73b229 | 536 | timeout, contimeout); |
ef416fc2 | 537 | |
538 | /* | |
539 | * Remove the temporary file if necessary... | |
540 | */ | |
541 | ||
542 | if (tmpfilename[0]) | |
543 | unlink(tmpfilename); | |
544 | ||
f42414bf | 545 | if (fd) |
546 | close(fd); | |
547 | ||
c8fef167 MS |
548 | if (snmp_fd >= 0) |
549 | _cupsSNMPClose(snmp_fd); | |
550 | ||
ef416fc2 | 551 | /* |
552 | * Return the queue status... | |
553 | */ | |
554 | ||
555 | return (status); | |
556 | } | |
557 | ||
558 | ||
559 | /* | |
560 | * 'lpd_command()' - Send an LPR command sequence and wait for a reply. | |
561 | */ | |
562 | ||
563 | static int /* O - Status of command */ | |
564 | lpd_command(int fd, /* I - Socket connection to LPD host */ | |
ef416fc2 | 565 | char *format, /* I - printf()-style format string */ |
566 | ...) /* I - Additional args as necessary */ | |
567 | { | |
568 | va_list ap; /* Argument pointer */ | |
569 | char buf[1024]; /* Output buffer */ | |
570 | int bytes; /* Number of bytes to output */ | |
571 | char status; /* Status from command */ | |
572 | ||
573 | ||
574 | /* | |
c8fef167 | 575 | * Don't try to send commands if the job has been canceled... |
ef416fc2 | 576 | */ |
577 | ||
578 | if (abort_job) | |
579 | return (-1); | |
580 | ||
581 | /* | |
582 | * Format the string... | |
583 | */ | |
584 | ||
585 | va_start(ap, format); | |
586 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
587 | va_end(ap); | |
588 | ||
589 | fprintf(stderr, "DEBUG: lpd_command %2.2x %s", buf[0], buf + 1); | |
590 | ||
591 | /* | |
592 | * Send the command... | |
593 | */ | |
594 | ||
595 | fprintf(stderr, "DEBUG: Sending command string (%d bytes)...\n", bytes); | |
596 | ||
597 | if (lpd_write(fd, buf, bytes) < bytes) | |
598 | { | |
c7017ecc | 599 | perror("DEBUG: Unable to send LPD command"); |
ef416fc2 | 600 | return (-1); |
601 | } | |
602 | ||
603 | /* | |
604 | * Read back the status from the command and return it... | |
605 | */ | |
606 | ||
c0e1af83 | 607 | fputs("DEBUG: Reading command status...\n", stderr); |
ef416fc2 | 608 | |
ef416fc2 | 609 | if (recv(fd, &status, 1, 0) < 1) |
610 | { | |
12f89d24 | 611 | _cupsLangPrintFilter(stderr, "WARNING", _("Printer did not respond.")); |
ef416fc2 | 612 | status = errno; |
613 | } | |
614 | ||
ef416fc2 | 615 | fprintf(stderr, "DEBUG: lpd_command returning %d\n", status); |
616 | ||
617 | return (status); | |
618 | } | |
619 | ||
620 | ||
621 | /* | |
622 | * 'lpd_queue()' - Queue a file using the Line Printer Daemon protocol. | |
623 | */ | |
624 | ||
625 | static int /* O - Zero on success, non-zero on failure */ | |
c8fef167 MS |
626 | lpd_queue(const char *hostname, /* I - Host to connect to */ |
627 | http_addrlist_t *addrlist, /* I - List of host addresses */ | |
628 | const char *printer, /* I - Printer/queue name */ | |
629 | int print_fd, /* I - File to print */ | |
630 | int snmp_fd, /* I - SNMP socket */ | |
631 | int mode, /* I - Print mode */ | |
632 | const char *user, /* I - Requesting user */ | |
633 | const char *title, /* I - Job title */ | |
634 | int copies, /* I - Number of copies */ | |
635 | int banner, /* I - Print LPD banner? */ | |
636 | int format, /* I - Format specifier */ | |
637 | int order, /* I - Order of data/control files */ | |
638 | int reserve, /* I - Reserve ports? */ | |
639 | int manual_copies,/* I - Do copies by hand... */ | |
640 | int timeout, /* I - Timeout... */ | |
641 | int contimeout) /* I - Connection timeout */ | |
ef416fc2 | 642 | { |
ef416fc2 | 643 | char localhost[255]; /* Local host name */ |
644 | int error; /* Error number */ | |
645 | struct stat filestats; /* File statistics */ | |
646 | int lport; /* LPD connection local port */ | |
647 | int fd; /* LPD socket */ | |
648 | char control[10240], /* LPD control 'file' */ | |
649 | *cptr; /* Pointer into control file string */ | |
650 | char status; /* Status byte from command */ | |
c0e1af83 | 651 | int delay; /* Delay for retries... */ |
26d47ec6 | 652 | char addrname[256]; /* Address name */ |
c8fef167 MS |
653 | http_addrlist_t *addr; /* Socket address */ |
654 | int have_supplies; /* Printer supports supply levels? */ | |
ef416fc2 | 655 | int copy; /* Copies written */ |
fa73b229 | 656 | time_t start_time; /* Time of first connect */ |
ef416fc2 | 657 | size_t nbytes; /* Number of bytes written */ |
658 | off_t tbytes; /* Total bytes written */ | |
a74454a7 | 659 | char buffer[32768]; /* Output buffer */ |
12f89d24 MS |
660 | #ifdef WIN32 |
661 | DWORD tv; /* Timeout in milliseconds */ | |
ef416fc2 | 662 | #else |
12f89d24 MS |
663 | struct timeval tv; /* Timeout in secs and usecs */ |
664 | #endif /* WIN32 */ | |
665 | ||
ef416fc2 | 666 | |
fa73b229 | 667 | /* |
c0e1af83 | 668 | * Remember when we started trying to connect to the printer... |
fa73b229 | 669 | */ |
670 | ||
4d301e69 | 671 | start_time = time(NULL); |
fa73b229 | 672 | |
ef416fc2 | 673 | /* |
674 | * Loop forever trying to print the file... | |
675 | */ | |
676 | ||
677 | while (!abort_job) | |
678 | { | |
679 | /* | |
680 | * First try to reserve a port for this connection... | |
681 | */ | |
682 | ||
acb056cb | 683 | fprintf(stderr, "DEBUG: Connecting to %s:%d for printer %s\n", hostname, |
c8fef167 | 684 | _httpAddrPort(&(addrlist->addr)), printer); |
0837b7e8 | 685 | _cupsLangPrintFilter(stderr, "INFO", _("Connecting to printer.")); |
ef416fc2 | 686 | |
c0e1af83 | 687 | for (lport = reserve == RESERVE_RFC1179 ? 732 : 1024, addr = addrlist, |
688 | delay = 5;; | |
ef416fc2 | 689 | addr = addr->next) |
690 | { | |
691 | /* | |
c8fef167 | 692 | * Stop if this job has been canceled... |
ef416fc2 | 693 | */ |
694 | ||
695 | if (abort_job) | |
ef416fc2 | 696 | return (CUPS_BACKEND_FAILED); |
ef416fc2 | 697 | |
698 | /* | |
699 | * Choose the next priviledged port... | |
700 | */ | |
701 | ||
702 | if (!addr) | |
703 | addr = addrlist; | |
704 | ||
705 | lport --; | |
706 | ||
707 | if (lport < 721 && reserve == RESERVE_RFC1179) | |
708 | lport = 731; | |
709 | else if (lport < 1) | |
710 | lport = 1023; | |
711 | ||
712 | #ifdef HAVE_GETEUID | |
713 | if (geteuid() || !reserve) | |
714 | #else | |
715 | if (getuid() || !reserve) | |
716 | #endif /* HAVE_GETEUID */ | |
717 | { | |
718 | /* | |
719 | * Just create a regular socket... | |
720 | */ | |
721 | ||
722 | if ((fd = socket(addr->addr.addr.sa_family, SOCK_STREAM, 0)) < 0) | |
723 | { | |
c7017ecc | 724 | perror("DEBUG: Unable to create socket"); |
ef416fc2 | 725 | sleep(1); |
726 | ||
727 | continue; | |
728 | } | |
729 | ||
730 | lport = 0; | |
731 | } | |
732 | else | |
733 | { | |
734 | /* | |
735 | * We're running as root and want to comply with RFC 1179. Reserve a | |
736 | * priviledged lport between 721 and 731... | |
737 | */ | |
738 | ||
739 | if ((fd = rresvport_af(&lport, addr->addr.addr.sa_family)) < 0) | |
740 | { | |
c7017ecc | 741 | perror("DEBUG: Unable to reserve port"); |
ef416fc2 | 742 | sleep(1); |
743 | ||
744 | continue; | |
745 | } | |
746 | } | |
747 | ||
748 | /* | |
749 | * Connect to the printer or server... | |
750 | */ | |
751 | ||
752 | if (abort_job) | |
753 | { | |
ef416fc2 | 754 | close(fd); |
755 | ||
756 | return (CUPS_BACKEND_FAILED); | |
757 | } | |
758 | ||
759 | if (!connect(fd, &(addr->addr.addr), httpAddrLength(&(addr->addr)))) | |
760 | break; | |
761 | ||
762 | error = errno; | |
763 | close(fd); | |
ef416fc2 | 764 | |
765 | if (addr->next) | |
766 | continue; | |
767 | ||
768 | if (getenv("CLASS") != NULL) | |
769 | { | |
770 | /* | |
771 | * If the CLASS environment variable is set, the job was submitted | |
772 | * to a class and not to a specific queue. In this case, we want | |
773 | * to abort immediately so that the job can be requeued on the next | |
774 | * available printer in the class. | |
775 | */ | |
776 | ||
0837b7e8 MS |
777 | _cupsLangPrintFilter(stderr, "INFO", |
778 | _("Unable to contact printer, queuing on next " | |
779 | "printer in class.")); | |
ef416fc2 | 780 | |
ef416fc2 | 781 | /* |
782 | * Sleep 5 seconds to keep the job from requeuing too rapidly... | |
783 | */ | |
784 | ||
785 | sleep(5); | |
786 | ||
787 | return (CUPS_BACKEND_FAILED); | |
788 | } | |
789 | ||
c7017ecc MS |
790 | fprintf(stderr, "DEBUG: Connection error: %s\n", strerror(error)); |
791 | ||
ef416fc2 | 792 | if (error == ECONNREFUSED || error == EHOSTDOWN || |
793 | error == EHOSTUNREACH) | |
794 | { | |
fa73b229 | 795 | if (contimeout && (time(NULL) - start_time) > contimeout) |
796 | { | |
0837b7e8 MS |
797 | _cupsLangPrintFilter(stderr, "ERROR", |
798 | _("The printer is not responding.")); | |
fa73b229 | 799 | return (CUPS_BACKEND_FAILED); |
800 | } | |
801 | ||
c7017ecc MS |
802 | switch (error) |
803 | { | |
804 | case EHOSTDOWN : | |
0837b7e8 | 805 | _cupsLangPrintFilter(stderr, "WARNING", |
22c9029b MS |
806 | _("The printer may not exist or " |
807 | "is unavailable at this time.")); | |
c7017ecc MS |
808 | break; |
809 | ||
810 | case EHOSTUNREACH : | |
0837b7e8 | 811 | _cupsLangPrintFilter(stderr, "WARNING", |
22c9029b MS |
812 | _("The printer is unreachable at " |
813 | "this time.")); | |
c7017ecc MS |
814 | break; |
815 | ||
816 | case ECONNREFUSED : | |
817 | default : | |
0837b7e8 | 818 | _cupsLangPrintFilter(stderr, "WARNING", |
22c9029b | 819 | _("The printer is busy.")); |
c7017ecc MS |
820 | break; |
821 | } | |
c0e1af83 | 822 | |
823 | sleep(delay); | |
824 | ||
825 | if (delay < 30) | |
826 | delay += 5; | |
ef416fc2 | 827 | } |
828 | else if (error == EADDRINUSE) | |
829 | { | |
830 | /* | |
831 | * Try on another port... | |
832 | */ | |
833 | ||
834 | sleep(1); | |
835 | } | |
836 | else | |
837 | { | |
0837b7e8 | 838 | _cupsLangPrintFilter(stderr, "ERROR", |
22c9029b | 839 | _("The printer is not responding.")); |
c0e1af83 | 840 | sleep(30); |
ef416fc2 | 841 | } |
842 | } | |
843 | ||
12f89d24 MS |
844 | /* |
845 | * Set the timeout... | |
846 | */ | |
847 | ||
848 | #ifdef WIN32 | |
849 | tv = (DWORD)(timeout * 1000); | |
850 | ||
851 | setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv, sizeof(tv)); | |
852 | setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, (char *)&tv, sizeof(tv)); | |
853 | #else | |
854 | tv.tv_sec = timeout; | |
855 | tv.tv_usec = 0; | |
856 | ||
857 | setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)); | |
858 | setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)); | |
859 | #endif /* WIN32 */ | |
860 | ||
757d2cad | 861 | fputs("STATE: -connecting-to-device\n", stderr); |
0837b7e8 | 862 | _cupsLangPrintFilter(stderr, "INFO", _("Connected to printer.")); |
26d47ec6 | 863 | |
22c9029b MS |
864 | fprintf(stderr, "DEBUG: Connected to %s:%d (local port %d)...\n", |
865 | httpAddrString(&(addr->addr), addrname, sizeof(addrname)), | |
866 | _httpAddrPort(&(addr->addr)), lport); | |
ef416fc2 | 867 | |
7a14d768 MS |
868 | /* |
869 | * See if the printer supports SNMP... | |
870 | */ | |
871 | ||
c8fef167 MS |
872 | if (snmp_fd >= 0) |
873 | have_supplies = !backendSNMPSupplies(snmp_fd, &(addrlist->addr), NULL, | |
874 | NULL); | |
426c6a59 MS |
875 | else |
876 | have_supplies = 0; | |
7a14d768 MS |
877 | |
878 | /* | |
879 | * Check for side-channel requests... | |
880 | */ | |
881 | ||
c8fef167 | 882 | backendCheckSideChannel(snmp_fd, &(addrlist->addr)); |
7a14d768 | 883 | |
ef416fc2 | 884 | /* |
885 | * Next, open the print file and figure out its size... | |
886 | */ | |
887 | ||
f42414bf | 888 | if (print_fd) |
ef416fc2 | 889 | { |
c0e1af83 | 890 | /* |
891 | * Use the size from the print file... | |
892 | */ | |
893 | ||
f42414bf | 894 | if (fstat(print_fd, &filestats)) |
895 | { | |
f42414bf | 896 | close(fd); |
ef416fc2 | 897 | |
c7017ecc | 898 | perror("DEBUG: unable to stat print file"); |
f42414bf | 899 | return (CUPS_BACKEND_FAILED); |
900 | } | |
ef416fc2 | 901 | |
f42414bf | 902 | filestats.st_size *= manual_copies; |
ef416fc2 | 903 | } |
f42414bf | 904 | else |
c0e1af83 | 905 | { |
906 | /* | |
907 | * Use a "very large value" for the size so that the printer will | |
908 | * keep printing until we close the connection... | |
909 | */ | |
910 | ||
f42414bf | 911 | #ifdef _LARGEFILE_SOURCE |
912 | filestats.st_size = (size_t)(999999999999.0); | |
913 | #else | |
914 | filestats.st_size = 2147483647; | |
915 | #endif /* _LARGEFILE_SOURCE */ | |
c0e1af83 | 916 | } |
ef416fc2 | 917 | |
918 | /* | |
919 | * Send a job header to the printer, specifying no banner page and | |
920 | * literal output... | |
921 | */ | |
922 | ||
12f89d24 | 923 | if (lpd_command(fd, "\002%s\n", |
ef416fc2 | 924 | printer)) /* Receive print job(s) */ |
925 | { | |
ef416fc2 | 926 | close(fd); |
927 | return (CUPS_BACKEND_FAILED); | |
928 | } | |
929 | ||
757d2cad | 930 | httpGetHostname(NULL, localhost, sizeof(localhost)); |
ef416fc2 | 931 | |
932 | snprintf(control, sizeof(control), | |
933 | "H%.31s\n" /* RFC 1179, Section 7.2 - host name <= 31 chars */ | |
934 | "P%.31s\n" /* RFC 1179, Section 7.2 - user name <= 31 chars */ | |
935 | "J%.99s\n", /* RFC 1179, Section 7.2 - job name <= 99 chars */ | |
936 | localhost, user, title); | |
937 | cptr = control + strlen(control); | |
938 | ||
939 | if (banner) | |
940 | { | |
941 | snprintf(cptr, sizeof(control) - (cptr - control), | |
942 | "C%.31s\n" /* RFC 1179, Section 7.2 - class name <= 31 chars */ | |
943 | "L%s\n", | |
944 | localhost, user); | |
945 | cptr += strlen(cptr); | |
946 | } | |
947 | ||
948 | while (copies > 0) | |
949 | { | |
950 | snprintf(cptr, sizeof(control) - (cptr - control), "%cdfA%03d%.15s\n", | |
951 | format, (int)getpid() % 1000, localhost); | |
952 | cptr += strlen(cptr); | |
953 | copies --; | |
954 | } | |
955 | ||
956 | snprintf(cptr, sizeof(control) - (cptr - control), | |
957 | "UdfA%03d%.15s\n" | |
958 | "N%.131s\n", /* RFC 1179, Section 7.2 - sourcefile name <= 131 chars */ | |
959 | (int)getpid() % 1000, localhost, title); | |
960 | ||
961 | fprintf(stderr, "DEBUG: Control file is:\n%s", control); | |
962 | ||
963 | if (order == ORDER_CONTROL_DATA) | |
964 | { | |
7a14d768 MS |
965 | /* |
966 | * Check for side-channel requests... | |
967 | */ | |
968 | ||
969 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
970 | ||
971 | /* | |
972 | * Send the control file... | |
973 | */ | |
974 | ||
12f89d24 | 975 | if (lpd_command(fd, "\002%d cfA%03.3d%.15s\n", strlen(control), |
ef416fc2 | 976 | (int)getpid() % 1000, localhost)) |
977 | { | |
ef416fc2 | 978 | close(fd); |
979 | ||
980 | return (CUPS_BACKEND_FAILED); | |
981 | } | |
982 | ||
0837b7e8 MS |
983 | fprintf(stderr, "DEBUG: Sending control file (%u bytes)\n", |
984 | (unsigned)strlen(control)); | |
ef416fc2 | 985 | |
986 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
987 | { | |
988 | status = errno; | |
c7017ecc MS |
989 | perror("DEBUG: Unable to write control file"); |
990 | ||
ef416fc2 | 991 | } |
992 | else | |
993 | { | |
ef416fc2 | 994 | if (read(fd, &status, 1) < 1) |
995 | { | |
0837b7e8 | 996 | _cupsLangPrintFilter(stderr, "WARNING", |
12f89d24 | 997 | _("Printer did not respond.")); |
ef416fc2 | 998 | status = errno; |
999 | } | |
ef416fc2 | 1000 | } |
1001 | ||
1002 | if (status != 0) | |
0837b7e8 MS |
1003 | _cupsLangPrintFilter(stderr, "ERROR", |
1004 | _("Remote host did not accept control file (%d)."), | |
1005 | status); | |
ef416fc2 | 1006 | else |
0837b7e8 MS |
1007 | _cupsLangPrintFilter(stderr, "INFO", |
1008 | _("Control file sent successfully.")); | |
ef416fc2 | 1009 | } |
1010 | else | |
1011 | status = 0; | |
1012 | ||
1013 | if (status == 0) | |
1014 | { | |
7a14d768 MS |
1015 | /* |
1016 | * Check for side-channel requests... | |
1017 | */ | |
1018 | ||
1019 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
1020 | ||
ef416fc2 | 1021 | /* |
1022 | * Send the print file... | |
1023 | */ | |
1024 | ||
12f89d24 | 1025 | if (lpd_command(fd, "\003" CUPS_LLFMT " dfA%03.3d%.15s\n", |
ef416fc2 | 1026 | CUPS_LLCAST filestats.st_size, (int)getpid() % 1000, |
1027 | localhost)) | |
1028 | { | |
ef416fc2 | 1029 | close(fd); |
1030 | ||
1031 | return (CUPS_BACKEND_FAILED); | |
1032 | } | |
1033 | ||
0837b7e8 MS |
1034 | fprintf(stderr, "DEBUG: Sending data file (" CUPS_LLFMT " bytes)\n", |
1035 | CUPS_LLCAST filestats.st_size); | |
ef416fc2 | 1036 | |
1037 | tbytes = 0; | |
1038 | for (copy = 0; copy < manual_copies; copy ++) | |
1039 | { | |
f42414bf | 1040 | lseek(print_fd, 0, SEEK_SET); |
ef416fc2 | 1041 | |
f42414bf | 1042 | while ((nbytes = read(print_fd, buffer, sizeof(buffer))) > 0) |
ef416fc2 | 1043 | { |
0837b7e8 MS |
1044 | _cupsLangPrintFilter(stderr, "INFO", |
1045 | _("Spooling job, %.0f%% complete."), | |
1046 | 100.0 * tbytes / filestats.st_size); | |
ef416fc2 | 1047 | |
1048 | if (lpd_write(fd, buffer, nbytes) < nbytes) | |
1049 | { | |
c7017ecc | 1050 | perror("DEBUG: Unable to send print file to printer"); |
ef416fc2 | 1051 | break; |
1052 | } | |
1053 | else | |
1054 | tbytes += nbytes; | |
1055 | } | |
1056 | } | |
1057 | ||
f42414bf | 1058 | if (mode == MODE_STANDARD) |
ef416fc2 | 1059 | { |
f42414bf | 1060 | if (tbytes < filestats.st_size) |
1061 | status = errno; | |
1062 | else if (lpd_write(fd, "", 1) < 1) | |
1063 | { | |
c7017ecc | 1064 | perror("DEBUG: Unable to send trailing nul to printer"); |
f42414bf | 1065 | status = errno; |
1066 | } | |
1067 | else | |
1068 | { | |
1069 | /* | |
1070 | * Read the status byte from the printer; if we can't read the byte | |
1071 | * back now, we should set status to "errno", however at this point | |
1072 | * we know the printer got the whole file and we don't necessarily | |
1073 | * want to requeue it over and over... | |
1074 | */ | |
ef416fc2 | 1075 | |
f42414bf | 1076 | if (recv(fd, &status, 1, 0) < 1) |
1077 | { | |
0837b7e8 | 1078 | _cupsLangPrintFilter(stderr, "WARNING", |
12f89d24 | 1079 | _("Printer did not respond.")); |
f42414bf | 1080 | status = 0; |
1081 | } | |
f42414bf | 1082 | } |
ef416fc2 | 1083 | } |
f42414bf | 1084 | else |
1085 | status = 0; | |
ef416fc2 | 1086 | |
1087 | if (status != 0) | |
0837b7e8 MS |
1088 | _cupsLangPrintFilter(stderr, "ERROR", |
1089 | _("Remote host did not accept data file (%d)."), | |
1090 | status); | |
ef416fc2 | 1091 | else |
0837b7e8 MS |
1092 | _cupsLangPrintFilter(stderr, "INFO", |
1093 | _("Data file sent successfully.")); | |
ef416fc2 | 1094 | } |
1095 | ||
1096 | if (status == 0 && order == ORDER_DATA_CONTROL) | |
1097 | { | |
7a14d768 MS |
1098 | /* |
1099 | * Check for side-channel requests... | |
1100 | */ | |
1101 | ||
1102 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
1103 | ||
1104 | /* | |
1105 | * Send control file... | |
1106 | */ | |
1107 | ||
12f89d24 | 1108 | if (lpd_command(fd, "\002%d cfA%03.3d%.15s\n", strlen(control), |
ef416fc2 | 1109 | (int)getpid() % 1000, localhost)) |
1110 | { | |
ef416fc2 | 1111 | close(fd); |
1112 | ||
1113 | return (CUPS_BACKEND_FAILED); | |
1114 | } | |
1115 | ||
0837b7e8 MS |
1116 | fprintf(stderr, "DEBUG: Sending control file (%lu bytes)\n", |
1117 | (unsigned long)strlen(control)); | |
ef416fc2 | 1118 | |
1119 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
1120 | { | |
1121 | status = errno; | |
c7017ecc | 1122 | perror("DEBUG: Unable to write control file"); |
ef416fc2 | 1123 | } |
1124 | else | |
1125 | { | |
ef416fc2 | 1126 | if (read(fd, &status, 1) < 1) |
1127 | { | |
0837b7e8 | 1128 | _cupsLangPrintFilter(stderr, "WARNING", |
12f89d24 | 1129 | _("Printer did not respond.")); |
ef416fc2 | 1130 | status = errno; |
1131 | } | |
ef416fc2 | 1132 | } |
1133 | ||
1134 | if (status != 0) | |
0837b7e8 MS |
1135 | _cupsLangPrintFilter(stderr, "ERROR", |
1136 | _("Remote host did not accept control file (%d)."), | |
1137 | status); | |
ef416fc2 | 1138 | else |
0837b7e8 MS |
1139 | _cupsLangPrintFilter(stderr, "INFO", |
1140 | _("Control file sent successfully.")); | |
ef416fc2 | 1141 | } |
1142 | ||
7a14d768 | 1143 | /* |
52f6f666 | 1144 | * Collect the final supply levels as needed... |
7a14d768 MS |
1145 | */ |
1146 | ||
426c6a59 | 1147 | if (have_supplies) |
52f6f666 | 1148 | backendSNMPSupplies(snmp_fd, &(addr->addr), NULL, NULL); |
7a14d768 | 1149 | |
ef416fc2 | 1150 | /* |
1151 | * Close the socket connection and input file... | |
1152 | */ | |
1153 | ||
1154 | close(fd); | |
ef416fc2 | 1155 | |
1156 | if (status == 0) | |
ef416fc2 | 1157 | return (CUPS_BACKEND_OK); |
ef416fc2 | 1158 | |
1159 | /* | |
1160 | * Waiting for a retry... | |
1161 | */ | |
1162 | ||
1163 | sleep(30); | |
1164 | } | |
1165 | ||
ef416fc2 | 1166 | /* |
c8fef167 | 1167 | * If we get here, then the job has been canceled... |
ef416fc2 | 1168 | */ |
1169 | ||
1170 | return (CUPS_BACKEND_FAILED); | |
1171 | } | |
1172 | ||
1173 | ||
ef416fc2 | 1174 | /* |
1175 | * 'lpd_write()' - Write a buffer of data to an LPD server. | |
1176 | */ | |
1177 | ||
1178 | static int /* O - Number of bytes written or -1 on error */ | |
1179 | lpd_write(int lpd_fd, /* I - LPD socket */ | |
1180 | char *buffer, /* I - Buffer to write */ | |
1181 | int length) /* I - Number of bytes to write */ | |
1182 | { | |
1183 | int bytes, /* Number of bytes written */ | |
1184 | total; /* Total number of bytes written */ | |
1185 | ||
1186 | ||
1187 | if (abort_job) | |
1188 | return (-1); | |
1189 | ||
1190 | total = 0; | |
1191 | while ((bytes = send(lpd_fd, buffer, length - total, 0)) >= 0) | |
1192 | { | |
1193 | total += bytes; | |
1194 | buffer += bytes; | |
1195 | ||
1196 | if (total == length) | |
1197 | break; | |
1198 | } | |
1199 | ||
1200 | if (bytes < 0) | |
1201 | return (-1); | |
1202 | else | |
1203 | return (length); | |
1204 | } | |
1205 | ||
1206 | ||
1207 | #ifndef HAVE_RRESVPORT_AF | |
1208 | /* | |
1209 | * 'rresvport_af()' - A simple implementation of rresvport_af(). | |
1210 | */ | |
1211 | ||
1212 | static int /* O - Socket or -1 on error */ | |
1213 | rresvport_af(int *port, /* IO - Port number to bind to */ | |
1214 | int family) /* I - Address family */ | |
1215 | { | |
1216 | http_addr_t addr; /* Socket address */ | |
1217 | int fd; /* Socket file descriptor */ | |
1218 | ||
1219 | ||
1220 | /* | |
1221 | * Try to create an IPv4 socket... | |
1222 | */ | |
1223 | ||
1224 | if ((fd = socket(family, SOCK_STREAM, 0)) < 0) | |
1225 | return (-1); | |
1226 | ||
1227 | /* | |
1228 | * Initialize the address buffer... | |
1229 | */ | |
1230 | ||
1231 | memset(&addr, 0, sizeof(addr)); | |
1232 | addr.addr.sa_family = family; | |
1233 | ||
1234 | /* | |
1235 | * Try to bind the socket to a reserved port... | |
1236 | */ | |
1237 | ||
1238 | while (*port > 511) | |
1239 | { | |
1240 | /* | |
1241 | * Set the port number... | |
1242 | */ | |
1243 | ||
22c9029b | 1244 | _httpAddrSetPort(&addr, *port); |
ef416fc2 | 1245 | |
1246 | /* | |
1247 | * Try binding the port to the socket; return if all is OK... | |
1248 | */ | |
1249 | ||
1250 | if (!bind(fd, (struct sockaddr *)&addr, sizeof(addr))) | |
1251 | return (fd); | |
1252 | ||
1253 | /* | |
1254 | * Stop if we have any error other than "address already in use"... | |
1255 | */ | |
1256 | ||
1257 | if (errno != EADDRINUSE) | |
1258 | { | |
1259 | # ifdef WIN32 | |
1260 | closesocket(fd); | |
1261 | # else | |
1262 | close(fd); | |
1263 | # endif /* WIN32 */ | |
1264 | ||
1265 | return (-1); | |
1266 | } | |
1267 | ||
1268 | /* | |
1269 | * Try the next port... | |
1270 | */ | |
1271 | ||
1272 | (*port)--; | |
1273 | } | |
1274 | ||
1275 | /* | |
1276 | * Wasn't able to bind to a reserved port, so close the socket and return | |
1277 | * -1... | |
1278 | */ | |
1279 | ||
1280 | # ifdef WIN32 | |
1281 | closesocket(fd); | |
1282 | # else | |
1283 | close(fd); | |
1284 | # endif /* WIN32 */ | |
1285 | ||
1286 | return (-1); | |
1287 | } | |
1288 | #endif /* !HAVE_RRESVPORT_AF */ | |
1289 | ||
1290 | ||
1291 | /* | |
1292 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the backend. | |
1293 | */ | |
1294 | ||
1295 | static void | |
1296 | sigterm_handler(int sig) /* I - Signal */ | |
1297 | { | |
1298 | (void)sig; /* remove compiler warnings... */ | |
1299 | ||
1300 | abort_job = 1; | |
1301 | } | |
1302 | ||
1303 | ||
1304 | /* | |
b19ccc9e | 1305 | * End of "$Id: lpd.c 7740 2008-07-14 23:58:05Z mike $". |
ef416fc2 | 1306 | */ |