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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 | { | |
8b450588 MS |
177 | printf("network lpd \"Unknown\" \"%s\"\n", |
178 | _cupsLangString(cupsLangDefault(), _("LPD/LPR Host or Printer"))); | |
ef416fc2 | 179 | return (CUPS_BACKEND_OK); |
180 | } | |
181 | else if (argc < 6 || argc > 7) | |
182 | { | |
db1f069b MS |
183 | _cupsLangPrintf(stderr, |
184 | _("Usage: %s job-id user title copies options [file]\n"), | |
185 | argv[0]); | |
ef416fc2 | 186 | return (CUPS_BACKEND_FAILED); |
187 | } | |
188 | ||
ef416fc2 | 189 | /* |
190 | * Extract the hostname and printer name from the URI... | |
191 | */ | |
192 | ||
1f0275e3 MS |
193 | if ((device_uri = cupsBackendDeviceURI(argv)) == NULL) |
194 | return (CUPS_BACKEND_FAILED); | |
195 | ||
196 | httpSeparateURI(HTTP_URI_CODING_ALL, device_uri, | |
a4d04587 | 197 | method, sizeof(method), username, sizeof(username), |
198 | hostname, sizeof(hostname), &port, | |
ef416fc2 | 199 | resource, sizeof(resource)); |
200 | ||
a41f09e2 MS |
201 | if (!port) |
202 | port = 515; /* Default to port 515 */ | |
203 | ||
ef416fc2 | 204 | if (!username[0]) |
205 | { | |
206 | /* | |
207 | * If no username is in the device URI, then use the print job user... | |
208 | */ | |
209 | ||
210 | strlcpy(username, argv[2], sizeof(username)); | |
211 | } | |
212 | ||
213 | /* | |
214 | * See if there are any options... | |
215 | */ | |
216 | ||
f42414bf | 217 | mode = MODE_STANDARD; |
fa73b229 | 218 | banner = 0; |
219 | format = 'l'; | |
220 | order = ORDER_CONTROL_DATA; | |
221 | reserve = RESERVE_ANY; | |
222 | manual_copies = 1; | |
223 | timeout = 300; | |
224 | contimeout = 7 * 24 * 60 * 60; | |
ef416fc2 | 225 | |
fa73b229 | 226 | #ifdef __APPLE__ |
c0e1af83 | 227 | /* |
228 | * We want to pass utf-8 characters, not re-map them (3071945) | |
229 | */ | |
230 | ||
fa73b229 | 231 | sanitize_title = 0; |
232 | ||
c0e1af83 | 233 | /* |
234 | * Get the default timeout from a system preference... | |
235 | */ | |
236 | ||
fa73b229 | 237 | { |
238 | CFPropertyListRef pvalue; /* Preference value */ | |
239 | SInt32 toval; /* Timeout value */ | |
240 | ||
241 | ||
242 | pvalue = CFPreferencesCopyValue(CFSTR("timeout"), | |
243 | CFSTR("com.apple.print.backends"), | |
244 | kCFPreferencesAnyUser, | |
245 | kCFPreferencesCurrentHost); | |
246 | if (pvalue) | |
247 | { | |
248 | if (CFGetTypeID(pvalue) == CFNumberGetTypeID()) | |
249 | { | |
250 | CFNumberGetValue(pvalue, kCFNumberSInt32Type, &toval); | |
251 | contimeout = (int)toval; | |
252 | } | |
253 | ||
254 | CFRelease(pvalue); | |
255 | } | |
256 | } | |
257 | #else | |
258 | sanitize_title = 1; | |
259 | #endif /* __APPLE__ */ | |
ef416fc2 | 260 | |
261 | if ((options = strchr(resource, '?')) != NULL) | |
262 | { | |
263 | /* | |
264 | * Yup, terminate the device name string and move to the first | |
265 | * character of the options... | |
266 | */ | |
267 | ||
268 | *options++ = '\0'; | |
269 | ||
270 | /* | |
271 | * Parse options... | |
272 | */ | |
273 | ||
274 | while (*options) | |
275 | { | |
276 | /* | |
277 | * Get the name... | |
278 | */ | |
279 | ||
db1f069b | 280 | name = options; |
ef416fc2 | 281 | |
db1f069b MS |
282 | while (*options && *options != '=' && *options != '+' && *options != '&') |
283 | options ++; | |
284 | ||
285 | if ((sep = *options) != '\0') | |
286 | *options++ = '\0'; | |
287 | ||
288 | if (sep == '=') | |
ef416fc2 | 289 | { |
290 | /* | |
291 | * Get the value... | |
292 | */ | |
293 | ||
db1f069b | 294 | value = options; |
ef416fc2 | 295 | |
db1f069b | 296 | while (*options && *options != '+' && *options != '&') |
ef416fc2 | 297 | options ++; |
db1f069b MS |
298 | |
299 | if (*options) | |
300 | *options++ = '\0'; | |
ef416fc2 | 301 | } |
302 | else | |
db1f069b | 303 | value = (char *)""; |
ef416fc2 | 304 | |
305 | /* | |
306 | * Process the option... | |
307 | */ | |
308 | ||
fa73b229 | 309 | if (!strcasecmp(name, "banner")) |
ef416fc2 | 310 | { |
311 | /* | |
312 | * Set the banner... | |
313 | */ | |
314 | ||
fa73b229 | 315 | banner = !value[0] || !strcasecmp(value, "on") || |
316 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 317 | } |
fa73b229 | 318 | else if (!strcasecmp(name, "format") && value[0]) |
ef416fc2 | 319 | { |
320 | /* | |
321 | * Set output format... | |
322 | */ | |
323 | ||
fa73b229 | 324 | if (strchr("cdfglnoprtv", value[0])) |
ef416fc2 | 325 | format = value[0]; |
326 | else | |
db1f069b MS |
327 | _cupsLangPrintf(stderr, _("ERROR: Unknown format character \"%c\"\n"), |
328 | value[0]); | |
ef416fc2 | 329 | } |
f42414bf | 330 | else if (!strcasecmp(name, "mode") && value[0]) |
331 | { | |
332 | /* | |
333 | * Set control/data order... | |
334 | */ | |
335 | ||
336 | if (!strcasecmp(value, "standard")) | |
bc44d920 | 337 | mode = MODE_STANDARD; |
f42414bf | 338 | else if (!strcasecmp(value, "stream")) |
bc44d920 | 339 | mode = MODE_STREAM; |
f42414bf | 340 | else |
db1f069b MS |
341 | _cupsLangPrintf(stderr, _("ERROR: Unknown print mode \"%s\"\n"), |
342 | value); | |
f42414bf | 343 | } |
fa73b229 | 344 | else if (!strcasecmp(name, "order") && value[0]) |
ef416fc2 | 345 | { |
346 | /* | |
347 | * Set control/data order... | |
348 | */ | |
349 | ||
fa73b229 | 350 | if (!strcasecmp(value, "control,data")) |
ef416fc2 | 351 | order = ORDER_CONTROL_DATA; |
fa73b229 | 352 | else if (!strcasecmp(value, "data,control")) |
ef416fc2 | 353 | order = ORDER_DATA_CONTROL; |
354 | else | |
db1f069b MS |
355 | _cupsLangPrintf(stderr, _("ERROR: Unknown file order \"%s\"\n"), |
356 | value); | |
ef416fc2 | 357 | } |
fa73b229 | 358 | else if (!strcasecmp(name, "reserve")) |
ef416fc2 | 359 | { |
360 | /* | |
361 | * Set port reservation mode... | |
362 | */ | |
363 | ||
fa73b229 | 364 | if (!value[0] || !strcasecmp(value, "on") || |
365 | !strcasecmp(value, "yes") || !strcasecmp(value, "true") || | |
ef416fc2 | 366 | !strcasecmp(value, "rfc1179")) |
367 | reserve = RESERVE_RFC1179; | |
368 | else if (!strcasecmp(value, "any")) | |
369 | reserve = RESERVE_ANY; | |
370 | else | |
371 | reserve = RESERVE_NONE; | |
372 | } | |
fa73b229 | 373 | else if (!strcasecmp(name, "manual_copies")) |
ef416fc2 | 374 | { |
375 | /* | |
376 | * Set manual copies... | |
377 | */ | |
378 | ||
fa73b229 | 379 | manual_copies = !value[0] || !strcasecmp(value, "on") || |
380 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 381 | } |
fa73b229 | 382 | else if (!strcasecmp(name, "sanitize_title")) |
ef416fc2 | 383 | { |
384 | /* | |
385 | * Set sanitize title... | |
386 | */ | |
387 | ||
fa73b229 | 388 | sanitize_title = !value[0] || !strcasecmp(value, "on") || |
389 | !strcasecmp(value, "yes") || !strcasecmp(value, "true"); | |
ef416fc2 | 390 | } |
fa73b229 | 391 | else if (!strcasecmp(name, "timeout")) |
ef416fc2 | 392 | { |
393 | /* | |
394 | * Set the timeout... | |
395 | */ | |
396 | ||
397 | if (atoi(value) > 0) | |
398 | timeout = atoi(value); | |
399 | } | |
fa73b229 | 400 | else if (!strcasecmp(name, "contimeout")) |
401 | { | |
402 | /* | |
c0e1af83 | 403 | * Set the connection timeout... |
fa73b229 | 404 | */ |
405 | ||
406 | if (atoi(value) > 0) | |
407 | contimeout = atoi(value); | |
408 | } | |
ef416fc2 | 409 | } |
410 | } | |
411 | ||
f42414bf | 412 | if (mode == MODE_STREAM) |
413 | order = ORDER_CONTROL_DATA; | |
414 | ||
415 | /* | |
416 | * If we have 7 arguments, print the file named on the command-line. | |
417 | * Otherwise, copy stdin to a temporary file and print the temporary | |
418 | * file. | |
419 | */ | |
420 | ||
421 | if (argc == 6 && mode == MODE_STANDARD) | |
422 | { | |
423 | /* | |
424 | * Copy stdin to a temporary file... | |
425 | */ | |
426 | ||
427 | char buffer[8192]; /* Buffer for copying */ | |
428 | int bytes; /* Number of bytes read */ | |
429 | ||
430 | ||
431 | if ((fd = cupsTempFd(tmpfilename, sizeof(tmpfilename))) < 0) | |
432 | { | |
080811b1 | 433 | _cupsLangPrintError(_("ERROR: Unable to create temporary file")); |
f42414bf | 434 | return (CUPS_BACKEND_FAILED); |
435 | } | |
436 | ||
437 | while ((bytes = fread(buffer, 1, sizeof(buffer), stdin)) > 0) | |
438 | if (write(fd, buffer, bytes) < bytes) | |
439 | { | |
080811b1 | 440 | _cupsLangPrintError(_("ERROR: Unable to write to temporary file")); |
f42414bf | 441 | close(fd); |
442 | unlink(tmpfilename); | |
443 | return (CUPS_BACKEND_FAILED); | |
444 | } | |
f42414bf | 445 | } |
446 | else if (argc == 6) | |
447 | { | |
448 | /* | |
449 | * Stream from stdin... | |
450 | */ | |
451 | ||
452 | filename = NULL; | |
453 | fd = 0; | |
454 | } | |
455 | else | |
456 | { | |
457 | filename = argv[6]; | |
458 | fd = open(filename, O_RDONLY); | |
459 | ||
460 | if (fd == -1) | |
461 | { | |
db1f069b MS |
462 | _cupsLangPrintf(stderr, _("ERROR: Unable to open print file %s: %s\n"), |
463 | filename, strerror(errno)); | |
f42414bf | 464 | return (CUPS_BACKEND_FAILED); |
465 | } | |
466 | } | |
467 | ||
ef416fc2 | 468 | /* |
469 | * Sanitize the document title... | |
470 | */ | |
471 | ||
472 | strlcpy(title, argv[3], sizeof(title)); | |
473 | ||
474 | if (sanitize_title) | |
475 | { | |
476 | /* | |
477 | * Sanitize the title string so that we don't cause problems on | |
478 | * the remote end... | |
479 | */ | |
480 | ||
db1f069b MS |
481 | char *ptr; |
482 | ||
ef416fc2 | 483 | for (ptr = title; *ptr; ptr ++) |
484 | if (!isalnum(*ptr & 255) && !isspace(*ptr & 255)) | |
485 | *ptr = '_'; | |
486 | } | |
487 | ||
488 | /* | |
489 | * Queue the job... | |
490 | */ | |
491 | ||
492 | if (argc > 6) | |
493 | { | |
494 | if (manual_copies) | |
495 | { | |
496 | manual_copies = atoi(argv[4]); | |
497 | copies = 1; | |
498 | } | |
499 | else | |
500 | { | |
501 | manual_copies = 1; | |
502 | copies = atoi(argv[4]); | |
503 | } | |
504 | ||
f42414bf | 505 | status = lpd_queue(hostname, port, resource + 1, fd, mode, |
ef416fc2 | 506 | username, title, copies, |
fa73b229 | 507 | banner, format, order, reserve, manual_copies, |
508 | timeout, contimeout); | |
ef416fc2 | 509 | |
510 | if (!status) | |
511 | fprintf(stderr, "PAGE: 1 %d\n", atoi(argv[4])); | |
512 | } | |
513 | else | |
f42414bf | 514 | status = lpd_queue(hostname, port, resource + 1, fd, mode, |
ef416fc2 | 515 | username, title, 1, |
fa73b229 | 516 | banner, format, order, reserve, 1, |
517 | timeout, contimeout); | |
ef416fc2 | 518 | |
519 | /* | |
520 | * Remove the temporary file if necessary... | |
521 | */ | |
522 | ||
523 | if (tmpfilename[0]) | |
524 | unlink(tmpfilename); | |
525 | ||
f42414bf | 526 | if (fd) |
527 | close(fd); | |
528 | ||
ef416fc2 | 529 | /* |
530 | * Return the queue status... | |
531 | */ | |
532 | ||
533 | return (status); | |
534 | } | |
535 | ||
536 | ||
537 | /* | |
538 | * 'lpd_command()' - Send an LPR command sequence and wait for a reply. | |
539 | */ | |
540 | ||
541 | static int /* O - Status of command */ | |
542 | lpd_command(int fd, /* I - Socket connection to LPD host */ | |
543 | int timeout, /* I - Seconds to wait for a response */ | |
544 | char *format, /* I - printf()-style format string */ | |
545 | ...) /* I - Additional args as necessary */ | |
546 | { | |
547 | va_list ap; /* Argument pointer */ | |
548 | char buf[1024]; /* Output buffer */ | |
549 | int bytes; /* Number of bytes to output */ | |
550 | char status; /* Status from command */ | |
551 | ||
552 | ||
553 | /* | |
554 | * Don't try to send commands if the job has been cancelled... | |
555 | */ | |
556 | ||
557 | if (abort_job) | |
558 | return (-1); | |
559 | ||
560 | /* | |
561 | * Format the string... | |
562 | */ | |
563 | ||
564 | va_start(ap, format); | |
565 | bytes = vsnprintf(buf, sizeof(buf), format, ap); | |
566 | va_end(ap); | |
567 | ||
568 | fprintf(stderr, "DEBUG: lpd_command %2.2x %s", buf[0], buf + 1); | |
569 | ||
570 | /* | |
571 | * Send the command... | |
572 | */ | |
573 | ||
574 | fprintf(stderr, "DEBUG: Sending command string (%d bytes)...\n", bytes); | |
575 | ||
576 | if (lpd_write(fd, buf, bytes) < bytes) | |
577 | { | |
080811b1 | 578 | _cupsLangPrintError(_("ERROR: Unable to send LPD command")); |
ef416fc2 | 579 | return (-1); |
580 | } | |
581 | ||
582 | /* | |
583 | * Read back the status from the command and return it... | |
584 | */ | |
585 | ||
c0e1af83 | 586 | fputs("DEBUG: Reading command status...\n", stderr); |
ef416fc2 | 587 | |
588 | alarm(timeout); | |
589 | ||
590 | if (recv(fd, &status, 1, 0) < 1) | |
591 | { | |
db1f069b MS |
592 | _cupsLangPrintf(stderr, |
593 | _("WARNING: Remote host did not respond with command " | |
594 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 595 | status = errno; |
596 | } | |
597 | ||
598 | alarm(0); | |
599 | ||
600 | fprintf(stderr, "DEBUG: lpd_command returning %d\n", status); | |
601 | ||
602 | return (status); | |
603 | } | |
604 | ||
605 | ||
606 | /* | |
607 | * 'lpd_queue()' - Queue a file using the Line Printer Daemon protocol. | |
608 | */ | |
609 | ||
610 | static int /* O - Zero on success, non-zero on failure */ | |
611 | lpd_queue(const char *hostname, /* I - Host to connect to */ | |
612 | int port, /* I - Port to connect on */ | |
613 | const char *printer, /* I - Printer/queue name */ | |
f42414bf | 614 | int print_fd, /* I - File to print */ |
615 | int mode, /* I - Print mode */ | |
ef416fc2 | 616 | const char *user, /* I - Requesting user */ |
617 | const char *title, /* I - Job title */ | |
618 | int copies, /* I - Number of copies */ | |
619 | int banner, /* I - Print LPD banner? */ | |
620 | int format, /* I - Format specifier */ | |
621 | int order, /* I - Order of data/control files */ | |
622 | int reserve, /* I - Reserve ports? */ | |
623 | int manual_copies, /* I - Do copies by hand... */ | |
fa73b229 | 624 | int timeout, /* I - Timeout... */ |
625 | int contimeout) /* I - Connection timeout */ | |
ef416fc2 | 626 | { |
ef416fc2 | 627 | char localhost[255]; /* Local host name */ |
628 | int error; /* Error number */ | |
629 | struct stat filestats; /* File statistics */ | |
630 | int lport; /* LPD connection local port */ | |
631 | int fd; /* LPD socket */ | |
632 | char control[10240], /* LPD control 'file' */ | |
633 | *cptr; /* Pointer into control file string */ | |
634 | char status; /* Status byte from command */ | |
635 | char portname[255]; /* Port name */ | |
c0e1af83 | 636 | int delay; /* Delay for retries... */ |
26d47ec6 | 637 | char addrname[256]; /* Address name */ |
ef416fc2 | 638 | http_addrlist_t *addrlist, /* Address list */ |
639 | *addr; /* Socket address */ | |
426c6a59 MS |
640 | int snmp_fd, /* SNMP socket */ |
641 | have_supplies; /* Printer supports supply levels? */ | |
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); |
8b450588 MS |
700 | fprintf(stderr, "DEBUG: Connecting to %s:%d for printer %s\n", |
701 | hostname, port, printer); | |
702 | _cupsLangPuts(stderr, _("INFO: Connecting to printer...\n")); | |
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); |
8b450588 | 869 | _cupsLangPuts(stderr, _("INFO: Connected to printer...\n")); |
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) | |
426c6a59 MS |
888 | have_supplies = !backendSNMPSupplies(snmp_fd, &(addr->addr), NULL, NULL); |
889 | else | |
890 | have_supplies = 0; | |
7a14d768 MS |
891 | |
892 | /* | |
893 | * Check for side-channel requests... | |
894 | */ | |
895 | ||
896 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
897 | ||
ef416fc2 | 898 | /* |
899 | * Next, open the print file and figure out its size... | |
900 | */ | |
901 | ||
f42414bf | 902 | if (print_fd) |
ef416fc2 | 903 | { |
c0e1af83 | 904 | /* |
905 | * Use the size from the print file... | |
906 | */ | |
907 | ||
f42414bf | 908 | if (fstat(print_fd, &filestats)) |
909 | { | |
910 | httpAddrFreeList(addrlist); | |
911 | close(fd); | |
ef416fc2 | 912 | |
080811b1 | 913 | _cupsLangPrintError(_("ERROR: unable to stat print file")); |
f42414bf | 914 | return (CUPS_BACKEND_FAILED); |
915 | } | |
ef416fc2 | 916 | |
f42414bf | 917 | filestats.st_size *= manual_copies; |
ef416fc2 | 918 | } |
f42414bf | 919 | else |
c0e1af83 | 920 | { |
921 | /* | |
922 | * Use a "very large value" for the size so that the printer will | |
923 | * keep printing until we close the connection... | |
924 | */ | |
925 | ||
f42414bf | 926 | #ifdef _LARGEFILE_SOURCE |
927 | filestats.st_size = (size_t)(999999999999.0); | |
928 | #else | |
929 | filestats.st_size = 2147483647; | |
930 | #endif /* _LARGEFILE_SOURCE */ | |
c0e1af83 | 931 | } |
ef416fc2 | 932 | |
933 | /* | |
934 | * Send a job header to the printer, specifying no banner page and | |
935 | * literal output... | |
936 | */ | |
937 | ||
938 | if (lpd_command(fd, timeout, "\002%s\n", | |
939 | printer)) /* Receive print job(s) */ | |
940 | { | |
941 | httpAddrFreeList(addrlist); | |
942 | close(fd); | |
943 | return (CUPS_BACKEND_FAILED); | |
944 | } | |
945 | ||
757d2cad | 946 | httpGetHostname(NULL, localhost, sizeof(localhost)); |
ef416fc2 | 947 | |
948 | snprintf(control, sizeof(control), | |
949 | "H%.31s\n" /* RFC 1179, Section 7.2 - host name <= 31 chars */ | |
950 | "P%.31s\n" /* RFC 1179, Section 7.2 - user name <= 31 chars */ | |
951 | "J%.99s\n", /* RFC 1179, Section 7.2 - job name <= 99 chars */ | |
952 | localhost, user, title); | |
953 | cptr = control + strlen(control); | |
954 | ||
955 | if (banner) | |
956 | { | |
957 | snprintf(cptr, sizeof(control) - (cptr - control), | |
958 | "C%.31s\n" /* RFC 1179, Section 7.2 - class name <= 31 chars */ | |
959 | "L%s\n", | |
960 | localhost, user); | |
961 | cptr += strlen(cptr); | |
962 | } | |
963 | ||
964 | while (copies > 0) | |
965 | { | |
966 | snprintf(cptr, sizeof(control) - (cptr - control), "%cdfA%03d%.15s\n", | |
967 | format, (int)getpid() % 1000, localhost); | |
968 | cptr += strlen(cptr); | |
969 | copies --; | |
970 | } | |
971 | ||
972 | snprintf(cptr, sizeof(control) - (cptr - control), | |
973 | "UdfA%03d%.15s\n" | |
974 | "N%.131s\n", /* RFC 1179, Section 7.2 - sourcefile name <= 131 chars */ | |
975 | (int)getpid() % 1000, localhost, title); | |
976 | ||
977 | fprintf(stderr, "DEBUG: Control file is:\n%s", control); | |
978 | ||
979 | if (order == ORDER_CONTROL_DATA) | |
980 | { | |
7a14d768 MS |
981 | /* |
982 | * Check for side-channel requests... | |
983 | */ | |
984 | ||
985 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
986 | ||
987 | /* | |
988 | * Send the control file... | |
989 | */ | |
990 | ||
ef416fc2 | 991 | if (lpd_command(fd, timeout, "\002%d cfA%03.3d%.15s\n", strlen(control), |
992 | (int)getpid() % 1000, localhost)) | |
993 | { | |
994 | httpAddrFreeList(addrlist); | |
995 | close(fd); | |
996 | ||
997 | return (CUPS_BACKEND_FAILED); | |
998 | } | |
999 | ||
db1f069b MS |
1000 | _cupsLangPrintf(stderr, _("INFO: Sending control file (%u bytes)\n"), |
1001 | (unsigned)strlen(control)); | |
ef416fc2 | 1002 | |
1003 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
1004 | { | |
1005 | status = errno; | |
080811b1 | 1006 | _cupsLangPrintError(_("ERROR: Unable to write control file")); |
ef416fc2 | 1007 | } |
1008 | else | |
1009 | { | |
1010 | alarm(timeout); | |
1011 | ||
1012 | if (read(fd, &status, 1) < 1) | |
1013 | { | |
db1f069b MS |
1014 | _cupsLangPrintf(stderr, |
1015 | _("WARNING: Remote host did not respond with control " | |
1016 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 1017 | status = errno; |
1018 | } | |
1019 | ||
1020 | alarm(0); | |
1021 | } | |
1022 | ||
1023 | if (status != 0) | |
db1f069b MS |
1024 | _cupsLangPrintf(stderr, |
1025 | _("ERROR: Remote host did not accept control file " | |
1026 | "(%d)\n"), status); | |
ef416fc2 | 1027 | else |
db1f069b | 1028 | _cupsLangPuts(stderr, _("INFO: Control file sent successfully\n")); |
ef416fc2 | 1029 | } |
1030 | else | |
1031 | status = 0; | |
1032 | ||
1033 | if (status == 0) | |
1034 | { | |
7a14d768 MS |
1035 | /* |
1036 | * Check for side-channel requests... | |
1037 | */ | |
1038 | ||
1039 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
1040 | ||
ef416fc2 | 1041 | /* |
1042 | * Send the print file... | |
1043 | */ | |
1044 | ||
1045 | if (lpd_command(fd, timeout, "\003" CUPS_LLFMT " dfA%03.3d%.15s\n", | |
1046 | CUPS_LLCAST filestats.st_size, (int)getpid() % 1000, | |
1047 | localhost)) | |
1048 | { | |
1049 | httpAddrFreeList(addrlist); | |
1050 | close(fd); | |
1051 | ||
1052 | return (CUPS_BACKEND_FAILED); | |
1053 | } | |
1054 | ||
db1f069b | 1055 | _cupsLangPrintf(stderr, |
c0e1af83 | 1056 | #ifdef HAVE_LONG_LONG |
db1f069b | 1057 | _("INFO: Sending data file (%lld bytes)\n"), |
c0e1af83 | 1058 | #else |
db1f069b | 1059 | _("INFO: Sending data file (%ld bytes)\n"), |
c0e1af83 | 1060 | #endif /* HAVE_LONG_LONG */ |
db1f069b | 1061 | CUPS_LLCAST filestats.st_size); |
ef416fc2 | 1062 | |
1063 | tbytes = 0; | |
1064 | for (copy = 0; copy < manual_copies; copy ++) | |
1065 | { | |
f42414bf | 1066 | lseek(print_fd, 0, SEEK_SET); |
ef416fc2 | 1067 | |
f42414bf | 1068 | while ((nbytes = read(print_fd, buffer, sizeof(buffer))) > 0) |
ef416fc2 | 1069 | { |
db1f069b MS |
1070 | _cupsLangPrintf(stderr, |
1071 | _("INFO: Spooling LPR job, %.0f%% complete...\n"), | |
1072 | 100.0 * tbytes / filestats.st_size); | |
ef416fc2 | 1073 | |
1074 | if (lpd_write(fd, buffer, nbytes) < nbytes) | |
1075 | { | |
080811b1 | 1076 | _cupsLangPrintError(_("ERROR: Unable to send print file to printer")); |
ef416fc2 | 1077 | break; |
1078 | } | |
1079 | else | |
1080 | tbytes += nbytes; | |
1081 | } | |
1082 | } | |
1083 | ||
f42414bf | 1084 | if (mode == MODE_STANDARD) |
ef416fc2 | 1085 | { |
f42414bf | 1086 | if (tbytes < filestats.st_size) |
1087 | status = errno; | |
1088 | else if (lpd_write(fd, "", 1) < 1) | |
1089 | { | |
080811b1 | 1090 | _cupsLangPrintError(_("ERROR: Unable to send trailing nul to printer")); |
f42414bf | 1091 | status = errno; |
1092 | } | |
1093 | else | |
1094 | { | |
1095 | /* | |
1096 | * Read the status byte from the printer; if we can't read the byte | |
1097 | * back now, we should set status to "errno", however at this point | |
1098 | * we know the printer got the whole file and we don't necessarily | |
1099 | * want to requeue it over and over... | |
1100 | */ | |
ef416fc2 | 1101 | |
f42414bf | 1102 | alarm(timeout); |
ef416fc2 | 1103 | |
f42414bf | 1104 | if (recv(fd, &status, 1, 0) < 1) |
1105 | { | |
db1f069b MS |
1106 | _cupsLangPrintf(stderr, |
1107 | _("WARNING: Remote host did not respond with data " | |
1108 | "status byte after %d seconds!\n"), timeout); | |
f42414bf | 1109 | status = 0; |
1110 | } | |
ef416fc2 | 1111 | |
f42414bf | 1112 | alarm(0); |
1113 | } | |
ef416fc2 | 1114 | } |
f42414bf | 1115 | else |
1116 | status = 0; | |
ef416fc2 | 1117 | |
1118 | if (status != 0) | |
db1f069b MS |
1119 | _cupsLangPrintf(stderr, |
1120 | _("ERROR: Remote host did not accept data file (%d)\n"), | |
1121 | status); | |
ef416fc2 | 1122 | else |
db1f069b | 1123 | _cupsLangPuts(stderr, _("INFO: Data file sent successfully\n")); |
ef416fc2 | 1124 | } |
1125 | ||
1126 | if (status == 0 && order == ORDER_DATA_CONTROL) | |
1127 | { | |
7a14d768 MS |
1128 | /* |
1129 | * Check for side-channel requests... | |
1130 | */ | |
1131 | ||
1132 | backendCheckSideChannel(snmp_fd, &(addr->addr)); | |
1133 | ||
1134 | /* | |
1135 | * Send control file... | |
1136 | */ | |
1137 | ||
ef416fc2 | 1138 | if (lpd_command(fd, timeout, "\002%d cfA%03.3d%.15s\n", strlen(control), |
1139 | (int)getpid() % 1000, localhost)) | |
1140 | { | |
1141 | httpAddrFreeList(addrlist); | |
1142 | close(fd); | |
1143 | ||
1144 | return (CUPS_BACKEND_FAILED); | |
1145 | } | |
1146 | ||
db1f069b MS |
1147 | _cupsLangPrintf(stderr, _("INFO: Sending control file (%lu bytes)\n"), |
1148 | (unsigned long)strlen(control)); | |
ef416fc2 | 1149 | |
1150 | if (lpd_write(fd, control, strlen(control) + 1) < (strlen(control) + 1)) | |
1151 | { | |
1152 | status = errno; | |
080811b1 | 1153 | _cupsLangPrintError(_("ERROR: Unable to write control file")); |
ef416fc2 | 1154 | } |
1155 | else | |
1156 | { | |
1157 | alarm(timeout); | |
1158 | ||
1159 | if (read(fd, &status, 1) < 1) | |
1160 | { | |
db1f069b MS |
1161 | _cupsLangPrintf(stderr, |
1162 | _("WARNING: Remote host did not respond with control " | |
1163 | "status byte after %d seconds!\n"), timeout); | |
ef416fc2 | 1164 | status = errno; |
1165 | } | |
1166 | ||
1167 | alarm(0); | |
1168 | } | |
1169 | ||
1170 | if (status != 0) | |
db1f069b MS |
1171 | _cupsLangPrintf(stderr, |
1172 | _("ERROR: Remote host did not accept control file " | |
1173 | "(%d)\n"), status); | |
ef416fc2 | 1174 | else |
db1f069b | 1175 | _cupsLangPuts(stderr, _("INFO: Control file sent successfully\n")); |
ef416fc2 | 1176 | } |
1177 | ||
7a14d768 | 1178 | /* |
52f6f666 | 1179 | * Collect the final supply levels as needed... |
7a14d768 MS |
1180 | */ |
1181 | ||
426c6a59 | 1182 | if (have_supplies) |
52f6f666 | 1183 | backendSNMPSupplies(snmp_fd, &(addr->addr), NULL, NULL); |
7a14d768 | 1184 | |
ef416fc2 | 1185 | /* |
1186 | * Close the socket connection and input file... | |
1187 | */ | |
1188 | ||
1189 | close(fd); | |
ef416fc2 | 1190 | |
1191 | if (status == 0) | |
1192 | { | |
1193 | httpAddrFreeList(addrlist); | |
1194 | ||
1195 | return (CUPS_BACKEND_OK); | |
1196 | } | |
1197 | ||
1198 | /* | |
1199 | * Waiting for a retry... | |
1200 | */ | |
1201 | ||
1202 | sleep(30); | |
1203 | } | |
1204 | ||
1205 | httpAddrFreeList(addrlist); | |
1206 | ||
1207 | /* | |
1208 | * If we get here, then the job has been cancelled... | |
1209 | */ | |
1210 | ||
1211 | return (CUPS_BACKEND_FAILED); | |
1212 | } | |
1213 | ||
1214 | ||
1215 | /* | |
1216 | * 'lpd_timeout()' - Handle timeout alarms... | |
1217 | */ | |
1218 | ||
1219 | static void | |
1220 | lpd_timeout(int sig) /* I - Signal number */ | |
1221 | { | |
1222 | (void)sig; | |
1223 | ||
1224 | #if !defined(HAVE_SIGSET) && !defined(HAVE_SIGACTION) | |
1225 | signal(SIGALRM, lpd_timeout); | |
1226 | #endif /* !HAVE_SIGSET && !HAVE_SIGACTION */ | |
1227 | } | |
1228 | ||
1229 | ||
1230 | /* | |
1231 | * 'lpd_write()' - Write a buffer of data to an LPD server. | |
1232 | */ | |
1233 | ||
1234 | static int /* O - Number of bytes written or -1 on error */ | |
1235 | lpd_write(int lpd_fd, /* I - LPD socket */ | |
1236 | char *buffer, /* I - Buffer to write */ | |
1237 | int length) /* I - Number of bytes to write */ | |
1238 | { | |
1239 | int bytes, /* Number of bytes written */ | |
1240 | total; /* Total number of bytes written */ | |
1241 | ||
1242 | ||
1243 | if (abort_job) | |
1244 | return (-1); | |
1245 | ||
1246 | total = 0; | |
1247 | while ((bytes = send(lpd_fd, buffer, length - total, 0)) >= 0) | |
1248 | { | |
1249 | total += bytes; | |
1250 | buffer += bytes; | |
1251 | ||
1252 | if (total == length) | |
1253 | break; | |
1254 | } | |
1255 | ||
1256 | if (bytes < 0) | |
1257 | return (-1); | |
1258 | else | |
1259 | return (length); | |
1260 | } | |
1261 | ||
1262 | ||
1263 | #ifndef HAVE_RRESVPORT_AF | |
1264 | /* | |
1265 | * 'rresvport_af()' - A simple implementation of rresvport_af(). | |
1266 | */ | |
1267 | ||
1268 | static int /* O - Socket or -1 on error */ | |
1269 | rresvport_af(int *port, /* IO - Port number to bind to */ | |
1270 | int family) /* I - Address family */ | |
1271 | { | |
1272 | http_addr_t addr; /* Socket address */ | |
1273 | int fd; /* Socket file descriptor */ | |
1274 | ||
1275 | ||
1276 | /* | |
1277 | * Try to create an IPv4 socket... | |
1278 | */ | |
1279 | ||
1280 | if ((fd = socket(family, SOCK_STREAM, 0)) < 0) | |
1281 | return (-1); | |
1282 | ||
1283 | /* | |
1284 | * Initialize the address buffer... | |
1285 | */ | |
1286 | ||
1287 | memset(&addr, 0, sizeof(addr)); | |
1288 | addr.addr.sa_family = family; | |
1289 | ||
1290 | /* | |
1291 | * Try to bind the socket to a reserved port... | |
1292 | */ | |
1293 | ||
1294 | while (*port > 511) | |
1295 | { | |
1296 | /* | |
1297 | * Set the port number... | |
1298 | */ | |
1299 | ||
1300 | # ifdef AF_INET6 | |
1301 | if (family == AF_INET6) | |
1302 | addr.ipv6.sin6_port = htons(*port); | |
1303 | else | |
1304 | # endif /* AF_INET6 */ | |
1305 | addr.ipv4.sin_port = htons(*port); | |
1306 | ||
1307 | /* | |
1308 | * Try binding the port to the socket; return if all is OK... | |
1309 | */ | |
1310 | ||
1311 | if (!bind(fd, (struct sockaddr *)&addr, sizeof(addr))) | |
1312 | return (fd); | |
1313 | ||
1314 | /* | |
1315 | * Stop if we have any error other than "address already in use"... | |
1316 | */ | |
1317 | ||
1318 | if (errno != EADDRINUSE) | |
1319 | { | |
1320 | # ifdef WIN32 | |
1321 | closesocket(fd); | |
1322 | # else | |
1323 | close(fd); | |
1324 | # endif /* WIN32 */ | |
1325 | ||
1326 | return (-1); | |
1327 | } | |
1328 | ||
1329 | /* | |
1330 | * Try the next port... | |
1331 | */ | |
1332 | ||
1333 | (*port)--; | |
1334 | } | |
1335 | ||
1336 | /* | |
1337 | * Wasn't able to bind to a reserved port, so close the socket and return | |
1338 | * -1... | |
1339 | */ | |
1340 | ||
1341 | # ifdef WIN32 | |
1342 | closesocket(fd); | |
1343 | # else | |
1344 | close(fd); | |
1345 | # endif /* WIN32 */ | |
1346 | ||
1347 | return (-1); | |
1348 | } | |
1349 | #endif /* !HAVE_RRESVPORT_AF */ | |
1350 | ||
1351 | ||
1352 | /* | |
1353 | * 'sigterm_handler()' - Handle 'terminate' signals that stop the backend. | |
1354 | */ | |
1355 | ||
1356 | static void | |
1357 | sigterm_handler(int sig) /* I - Signal */ | |
1358 | { | |
1359 | (void)sig; /* remove compiler warnings... */ | |
1360 | ||
1361 | abort_job = 1; | |
1362 | } | |
1363 | ||
1364 | ||
1365 | /* | |
b19ccc9e | 1366 | * End of "$Id: lpd.c 7740 2008-07-14 23:58:05Z mike $". |
ef416fc2 | 1367 | */ |