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ef416fc2 | 1 | /* |
b19ccc9e | 2 | * "$Id: usb-unix.c 7810 2008-07-29 01:11:15Z mike $" |
ef416fc2 | 3 | * |
4 | * USB port backend for the Common UNIX Printing System (CUPS). | |
5 | * | |
6 | * This file is included from "usb.c" when compiled on UNIX/Linux. | |
7 | * | |
75bd9771 | 8 | * Copyright 2007-2008 by Apple Inc. |
f7deaa1a | 9 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
ef416fc2 | 10 | * |
11 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 12 | * property of Apple Inc. and are protected by Federal copyright |
13 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
ef416fc2 | 14 | * "LICENSE" which should have been included with this file. If this |
bc44d920 | 15 | * file is missing or damaged, see the license at "http://www.cups.org/". |
ef416fc2 | 16 | * |
17 | * This file is subject to the Apple OS-Developed Software exception. | |
18 | * | |
19 | * Contents: | |
20 | * | |
ed486911 | 21 | * print_device() - Print a file to a USB device. |
ef416fc2 | 22 | * list_devices() - List all USB devices. |
ed486911 | 23 | * open_device() - Open a USB device... |
f7deaa1a | 24 | * side_cb() - Handle side-channel requests... |
ef416fc2 | 25 | */ |
26 | ||
27 | /* | |
28 | * Include necessary headers. | |
29 | */ | |
30 | ||
ef416fc2 | 31 | #include <sys/select.h> |
32 | ||
33 | ||
34 | /* | |
35 | * Local functions... | |
36 | */ | |
37 | ||
f7deaa1a | 38 | static int open_device(const char *uri, int *use_bc); |
568fa3fa MS |
39 | static void side_cb(int print_fd, int device_fd, int snmp_fd, |
40 | http_addr_t *addr, int use_bc); | |
ef416fc2 | 41 | |
42 | ||
43 | /* | |
44 | * 'print_device()' - Print a file to a USB device. | |
45 | */ | |
46 | ||
47 | int /* O - Exit status */ | |
48 | print_device(const char *uri, /* I - Device URI */ | |
49 | const char *hostname, /* I - Hostname/manufacturer */ | |
50 | const char *resource, /* I - Resource/modelname */ | |
db1f069b | 51 | char *options, /* I - Device options/serial number */ |
ed486911 | 52 | int print_fd, /* I - File descriptor to print */ |
e53920b9 | 53 | int copies, /* I - Copies to print */ |
54 | int argc, /* I - Number of command-line arguments (6 or 7) */ | |
55 | char *argv[]) /* I - Command-line arguments */ | |
ef416fc2 | 56 | { |
ed486911 | 57 | int use_bc; /* Use backchannel path? */ |
58 | int device_fd; /* USB device */ | |
59 | size_t tbytes; /* Total number of bytes written */ | |
ef416fc2 | 60 | struct termios opts; /* Parallel port options */ |
ed486911 | 61 | |
ef416fc2 | 62 | |
e53920b9 | 63 | (void)argc; |
64 | (void)argv; | |
ef416fc2 | 65 | |
66 | /* | |
67 | * Open the USB port device... | |
68 | */ | |
69 | ||
757d2cad | 70 | fputs("STATE: +connecting-to-device\n", stderr); |
71 | ||
ef416fc2 | 72 | do |
73 | { | |
b94498cf | 74 | #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) |
323c5de1 | 75 | /* |
b94498cf | 76 | * *BSD's ulpt driver currently does not support the |
77 | * back-channel, incorrectly returns data ready on a select(), | |
78 | * and locks up on read()... | |
323c5de1 | 79 | */ |
80 | ||
81 | use_bc = 0; | |
82 | ||
ed6e7faf MS |
83 | #elif defined(__sun) |
84 | /* | |
85 | * CUPS STR #3028: Solaris' usbprn driver apparently does not support | |
86 | * select() or poll(), so we can't support backchannel... | |
87 | */ | |
88 | ||
89 | use_bc = 0; | |
90 | ||
323c5de1 | 91 | #else |
8ca02f3c | 92 | /* |
f7deaa1a | 93 | * Disable backchannel data when printing to Brother, Canon, or |
94 | * Minolta USB printers - apparently these printers will return | |
95 | * the IEEE-1284 device ID over and over and over when they get | |
96 | * a read request... | |
8ca02f3c | 97 | */ |
98 | ||
f7deaa1a | 99 | use_bc = strcasecmp(hostname, "Brother") && |
100 | strcasecmp(hostname, "Canon") && | |
0a682745 MS |
101 | strncasecmp(hostname, "Konica", 6) && |
102 | strncasecmp(hostname, "Minolta", 7); | |
b94498cf | 103 | #endif /* __FreeBSD__ || __NetBSD__ || __OpenBSD__ || __DragonFly__ */ |
8ca02f3c | 104 | |
105 | if ((device_fd = open_device(uri, &use_bc)) == -1) | |
ef416fc2 | 106 | { |
107 | if (getenv("CLASS") != NULL) | |
108 | { | |
109 | /* | |
110 | * If the CLASS environment variable is set, the job was submitted | |
111 | * to a class and not to a specific queue. In this case, we want | |
112 | * to abort immediately so that the job can be requeued on the next | |
113 | * available printer in the class. | |
114 | */ | |
115 | ||
db1f069b MS |
116 | _cupsLangPuts(stderr, |
117 | _("INFO: Unable to contact printer, queuing on next " | |
118 | "printer in class...\n")); | |
ef416fc2 | 119 | |
120 | /* | |
121 | * Sleep 5 seconds to keep the job from requeuing too rapidly... | |
122 | */ | |
123 | ||
124 | sleep(5); | |
125 | ||
126 | return (CUPS_BACKEND_FAILED); | |
127 | } | |
128 | ||
129 | if (errno == EBUSY) | |
130 | { | |
db1f069b MS |
131 | _cupsLangPuts(stderr, |
132 | _("INFO: Printer busy; will retry in 10 seconds...\n")); | |
c0e1af83 | 133 | sleep(10); |
ef416fc2 | 134 | } |
ed486911 | 135 | else if (errno == ENXIO || errno == EIO || errno == ENOENT || |
136 | errno == ENODEV) | |
ef416fc2 | 137 | { |
db1f069b MS |
138 | _cupsLangPuts(stderr, |
139 | _("INFO: Printer not connected; will retry in 30 " | |
140 | "seconds...\n")); | |
ef416fc2 | 141 | sleep(30); |
142 | } | |
143 | else | |
144 | { | |
db1f069b MS |
145 | _cupsLangPrintf(stderr, |
146 | _("ERROR: Unable to open device file \"%s\": %s\n"), | |
147 | resource, strerror(errno)); | |
ef416fc2 | 148 | return (CUPS_BACKEND_FAILED); |
149 | } | |
150 | } | |
151 | } | |
ed486911 | 152 | while (device_fd < 0); |
ef416fc2 | 153 | |
757d2cad | 154 | fputs("STATE: -connecting-to-device\n", stderr); |
155 | ||
ef416fc2 | 156 | /* |
157 | * Set any options provided... | |
158 | */ | |
159 | ||
ed486911 | 160 | tcgetattr(device_fd, &opts); |
ef416fc2 | 161 | |
162 | opts.c_lflag &= ~(ICANON | ECHO | ISIG); /* Raw mode */ | |
163 | ||
164 | /**** No options supported yet ****/ | |
165 | ||
ed486911 | 166 | tcsetattr(device_fd, TCSANOW, &opts); |
ef416fc2 | 167 | |
ef416fc2 | 168 | /* |
169 | * Finally, send the print file... | |
170 | */ | |
171 | ||
ed486911 | 172 | tbytes = 0; |
ef416fc2 | 173 | |
ed486911 | 174 | while (copies > 0 && tbytes >= 0) |
ef416fc2 | 175 | { |
176 | copies --; | |
177 | ||
ed486911 | 178 | if (print_fd != 0) |
ef416fc2 | 179 | { |
180 | fputs("PAGE: 1 1\n", stderr); | |
ed486911 | 181 | lseek(print_fd, 0, SEEK_SET); |
ef416fc2 | 182 | } |
183 | ||
ed6e7faf MS |
184 | #ifdef __sun |
185 | /* | |
186 | * CUPS STR #3028: Solaris' usbprn driver apparently does not support | |
187 | * select() or poll(), so we can't support the sidechannel either... | |
188 | */ | |
189 | ||
190 | tbytes = backendRunLoop(print_fd, device_fd, -1, NULL, use_bc, NULL); | |
191 | ||
192 | #else | |
568fa3fa | 193 | tbytes = backendRunLoop(print_fd, device_fd, -1, NULL, use_bc, side_cb); |
ed6e7faf | 194 | #endif /* __sun */ |
ef416fc2 | 195 | |
ed486911 | 196 | if (print_fd != 0 && tbytes >= 0) |
db1f069b | 197 | _cupsLangPrintf(stderr, |
c0e1af83 | 198 | #ifdef HAVE_LONG_LONG |
db1f069b | 199 | _("INFO: Sent print file, %lld bytes...\n"), |
c0e1af83 | 200 | #else |
db1f069b | 201 | _("INFO: Sent print file, %ld bytes...\n"), |
c0e1af83 | 202 | #endif /* HAVE_LONG_LONG */ |
db1f069b | 203 | CUPS_LLCAST tbytes); |
ef416fc2 | 204 | } |
205 | ||
206 | /* | |
207 | * Close the USB port and return... | |
208 | */ | |
209 | ||
ed486911 | 210 | close(device_fd); |
ef416fc2 | 211 | |
ed486911 | 212 | return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK); |
ef416fc2 | 213 | } |
214 | ||
215 | ||
216 | /* | |
217 | * 'list_devices()' - List all USB devices. | |
218 | */ | |
219 | ||
220 | void | |
221 | list_devices(void) | |
222 | { | |
223 | #ifdef __linux | |
2abf387c | 224 | int i; /* Looping var */ |
225 | int fd; /* File descriptor */ | |
226 | char device[255], /* Device filename */ | |
227 | device_id[1024], /* Device ID string */ | |
228 | device_uri[1024], /* Device URI string */ | |
229 | make_model[1024]; /* Make and model */ | |
ef416fc2 | 230 | |
749b1e90 | 231 | |
ef416fc2 | 232 | /* |
2abf387c | 233 | * Try to open each USB device... |
ef416fc2 | 234 | */ |
235 | ||
236 | for (i = 0; i < 16; i ++) | |
237 | { | |
2abf387c | 238 | /* |
239 | * Linux has a long history of changing the standard filenames used | |
240 | * for USB printer devices. We get the honor of trying them all... | |
241 | */ | |
ef416fc2 | 242 | |
2abf387c | 243 | sprintf(device, "/dev/usblp%d", i); |
244 | ||
245 | if ((fd = open(device, O_RDWR | O_EXCL)) < 0) | |
ef416fc2 | 246 | { |
2abf387c | 247 | if (errno != ENOENT) |
248 | continue; | |
ef416fc2 | 249 | |
2abf387c | 250 | sprintf(device, "/dev/usb/lp%d", i); |
251 | ||
252 | if ((fd = open(device, O_RDWR | O_EXCL)) < 0) | |
253 | { | |
254 | if (errno != ENOENT) | |
255 | continue; | |
256 | ||
257 | sprintf(device, "/dev/usb/usblp%d", i); | |
258 | ||
259 | if ((fd = open(device, O_RDWR | O_EXCL)) < 0) | |
260 | continue; | |
261 | } | |
ef416fc2 | 262 | } |
2abf387c | 263 | |
264 | if (!backendGetDeviceID(fd, device_id, sizeof(device_id), | |
265 | make_model, sizeof(make_model), | |
266 | "usb", device_uri, sizeof(device_uri))) | |
749b1e90 MS |
267 | cupsBackendReport("direct", device_uri, make_model, make_model, |
268 | device_id, NULL); | |
2abf387c | 269 | |
270 | close(fd); | |
ef416fc2 | 271 | } |
272 | #elif defined(__sgi) | |
273 | #elif defined(__sun) && defined(ECPPIOC_GETDEVID) | |
274 | int i; /* Looping var */ | |
275 | int fd; /* File descriptor */ | |
276 | char device[255], /* Device filename */ | |
277 | device_id[1024], /* Device ID string */ | |
278 | device_uri[1024], /* Device URI string */ | |
279 | make_model[1024]; /* Make and model */ | |
ef416fc2 | 280 | |
281 | ||
282 | /* | |
283 | * Open each USB device... | |
284 | */ | |
285 | ||
286 | for (i = 0; i < 8; i ++) | |
287 | { | |
288 | sprintf(device, "/dev/usb/printer%d", i); | |
289 | ||
8ca02f3c | 290 | if ((fd = open(device, O_WRONLY | O_EXCL)) >= 0) |
ef416fc2 | 291 | { |
ed486911 | 292 | if (!backendGetDeviceID(fd, device_id, sizeof(device_id), |
293 | make_model, sizeof(make_model), | |
294 | "usb", device_uri, sizeof(device_uri))) | |
749b1e90 MS |
295 | cupsBackendReport("direct", device_uri, make_model, make_model, |
296 | device_id, NULL); | |
ef416fc2 | 297 | |
298 | close(fd); | |
299 | } | |
300 | } | |
301 | #elif defined(__hpux) | |
302 | #elif defined(__osf) | |
2e4ff8af | 303 | #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) |
ef416fc2 | 304 | int i; /* Looping var */ |
305 | char device[255]; /* Device filename */ | |
306 | ||
307 | ||
308 | for (i = 0; i < 8; i ++) | |
309 | { | |
310 | sprintf(device, "/dev/ulpt%d", i); | |
311 | if (!access(device, 0)) | |
312 | printf("direct usb:%s \"Unknown\" \"USB Printer #%d\"\n", device, i + 1); | |
313 | ||
314 | sprintf(device, "/dev/unlpt%d", i); | |
315 | if (!access(device, 0)) | |
316 | printf("direct usb:%s \"Unknown\" \"USB Printer #%d (no reset)\"\n", device, i + 1); | |
317 | } | |
318 | #endif | |
319 | } | |
320 | ||
321 | ||
322 | /* | |
323 | * 'open_device()' - Open a USB device... | |
324 | */ | |
325 | ||
f7deaa1a | 326 | static int /* O - File descriptor or -1 on error */ |
8ca02f3c | 327 | open_device(const char *uri, /* I - Device URI */ |
328 | int *use_bc) /* O - Set to 0 for unidirectional */ | |
ef416fc2 | 329 | { |
8ca02f3c | 330 | int fd; /* File descriptor */ |
331 | ||
332 | ||
ef416fc2 | 333 | /* |
334 | * The generic implementation just treats the URI as a device filename... | |
335 | * Specific operating systems may also support using the device serial | |
336 | * number and/or make/model. | |
337 | */ | |
338 | ||
339 | if (!strncmp(uri, "usb:/dev/", 9)) | |
340 | #ifdef __linux | |
ed486911 | 341 | { |
342 | /* | |
343 | * Do not allow direct devices anymore... | |
344 | */ | |
345 | ||
346 | errno = ENODEV; | |
347 | return (-1); | |
348 | } | |
ef416fc2 | 349 | else if (!strncmp(uri, "usb://", 6)) |
350 | { | |
351 | /* | |
352 | * For Linux, try looking up the device serial number or model... | |
353 | */ | |
354 | ||
355 | int i; /* Looping var */ | |
356 | int busy; /* Are any ports busy? */ | |
2abf387c | 357 | char device[255], /* Device filename */ |
ef416fc2 | 358 | device_id[1024], /* Device ID string */ |
359 | make_model[1024], /* Make and model */ | |
360 | device_uri[1024]; /* Device URI string */ | |
361 | ||
362 | ||
363 | /* | |
2abf387c | 364 | * Find the correct USB device... |
ef416fc2 | 365 | */ |
366 | ||
0a682745 | 367 | for (;;) |
ef416fc2 | 368 | { |
369 | for (busy = 0, i = 0; i < 16; i ++) | |
370 | { | |
2abf387c | 371 | /* |
372 | * Linux has a long history of changing the standard filenames used | |
373 | * for USB printer devices. We get the honor of trying them all... | |
374 | */ | |
375 | ||
376 | sprintf(device, "/dev/usblp%d", i); | |
377 | ||
378 | if ((fd = open(device, O_RDWR | O_EXCL)) < 0 && errno == ENOENT) | |
379 | { | |
380 | sprintf(device, "/dev/usb/lp%d", i); | |
381 | ||
382 | if ((fd = open(device, O_RDWR | O_EXCL)) < 0 && errno == ENOENT) | |
383 | { | |
384 | sprintf(device, "/dev/usb/usblp%d", i); | |
385 | ||
386 | if ((fd = open(device, O_RDWR | O_EXCL)) < 0 && errno == ENOENT) | |
387 | continue; | |
388 | } | |
389 | } | |
ef416fc2 | 390 | |
2abf387c | 391 | if (fd >= 0) |
ef416fc2 | 392 | { |
ed486911 | 393 | backendGetDeviceID(fd, device_id, sizeof(device_id), |
394 | make_model, sizeof(make_model), | |
395 | "usb", device_uri, sizeof(device_uri)); | |
ef416fc2 | 396 | } |
397 | else | |
398 | { | |
399 | /* | |
400 | * If the open failed because it was busy, flag it so we retry | |
401 | * as needed... | |
402 | */ | |
403 | ||
404 | if (errno == EBUSY) | |
405 | busy = 1; | |
406 | ||
407 | device_uri[0] = '\0'; | |
408 | } | |
409 | ||
410 | if (!strcmp(uri, device_uri)) | |
411 | { | |
412 | /* | |
413 | * Yes, return this file descriptor... | |
414 | */ | |
415 | ||
c0e1af83 | 416 | fprintf(stderr, "DEBUG: Printer using device file \"%s\"...\n", |
417 | device); | |
ef416fc2 | 418 | |
419 | return (fd); | |
420 | } | |
421 | ||
422 | /* | |
423 | * This wasn't the one... | |
424 | */ | |
425 | ||
426 | if (fd >= 0) | |
427 | close(fd); | |
428 | } | |
429 | ||
430 | /* | |
431 | * If we get here and at least one of the printer ports showed up | |
432 | * as "busy", then sleep for a bit and retry... | |
433 | */ | |
434 | ||
435 | if (busy) | |
db1f069b MS |
436 | _cupsLangPuts(stderr, |
437 | _("INFO: Printer busy; will retry in 5 seconds...\n")); | |
839a51c8 MS |
438 | |
439 | sleep(5); | |
ef416fc2 | 440 | } |
ef416fc2 | 441 | } |
442 | #elif defined(__sun) && defined(ECPPIOC_GETDEVID) | |
ed486911 | 443 | { |
444 | /* | |
445 | * Do not allow direct devices anymore... | |
446 | */ | |
447 | ||
448 | errno = ENODEV; | |
449 | return (-1); | |
450 | } | |
ef416fc2 | 451 | else if (!strncmp(uri, "usb://", 6)) |
452 | { | |
453 | /* | |
454 | * For Solaris, try looking up the device serial number or model... | |
455 | */ | |
456 | ||
457 | int i; /* Looping var */ | |
458 | int busy; /* Are any ports busy? */ | |
ef416fc2 | 459 | char device[255], /* Device filename */ |
460 | device_id[1024], /* Device ID string */ | |
461 | make_model[1024], /* Make and model */ | |
462 | device_uri[1024]; /* Device URI string */ | |
ef416fc2 | 463 | |
464 | ||
465 | /* | |
466 | * Find the correct USB device... | |
467 | */ | |
468 | ||
469 | do | |
470 | { | |
471 | for (i = 0, busy = 0; i < 8; i ++) | |
472 | { | |
473 | sprintf(device, "/dev/usb/printer%d", i); | |
474 | ||
8ca02f3c | 475 | if ((fd = open(device, O_WRONLY | O_EXCL)) >= 0) |
ed486911 | 476 | backendGetDeviceID(fd, device_id, sizeof(device_id), |
477 | make_model, sizeof(make_model), | |
478 | "usb", device_uri, sizeof(device_uri)); | |
ef416fc2 | 479 | else |
480 | { | |
481 | /* | |
482 | * If the open failed because it was busy, flag it so we retry | |
483 | * as needed... | |
484 | */ | |
485 | ||
486 | if (errno == EBUSY) | |
487 | busy = 1; | |
488 | ||
489 | device_uri[0] = '\0'; | |
490 | } | |
491 | ||
492 | if (!strcmp(uri, device_uri)) | |
8ca02f3c | 493 | { |
494 | /* | |
495 | * Yes, return this file descriptor... | |
496 | */ | |
497 | ||
498 | fputs("DEBUG: Setting use_bc to 0!\n", stderr); | |
499 | ||
500 | *use_bc = 0; | |
501 | ||
502 | return (fd); | |
503 | } | |
ef416fc2 | 504 | |
505 | /* | |
506 | * This wasn't the one... | |
507 | */ | |
508 | ||
509 | if (fd >= 0) | |
510 | close(fd); | |
511 | } | |
512 | ||
513 | /* | |
514 | * If we get here and at least one of the printer ports showed up | |
515 | * as "busy", then sleep for a bit and retry... | |
516 | */ | |
517 | ||
518 | if (busy) | |
519 | { | |
db1f069b MS |
520 | _cupsLangPuts(stderr, |
521 | _("INFO: Printer is busy; will retry in 5 seconds...\n")); | |
ef416fc2 | 522 | sleep(5); |
523 | } | |
524 | } | |
525 | while (busy); | |
526 | ||
527 | /* | |
528 | * Couldn't find the printer, return "no such device or address"... | |
529 | */ | |
530 | ||
531 | errno = ENODEV; | |
532 | ||
533 | return (-1); | |
534 | } | |
535 | #else | |
8ca02f3c | 536 | { |
91c84a35 | 537 | if (*use_bc) |
323c5de1 | 538 | fd = open(uri + 4, O_RDWR | O_EXCL); |
539 | else | |
540 | fd = -1; | |
541 | ||
542 | if (fd < 0) | |
8ca02f3c | 543 | { |
544 | fd = open(uri + 4, O_WRONLY | O_EXCL); | |
545 | *use_bc = 0; | |
546 | } | |
547 | ||
548 | return (fd); | |
549 | } | |
ef416fc2 | 550 | #endif /* __linux */ |
551 | else | |
552 | { | |
553 | errno = ENODEV; | |
554 | return (-1); | |
555 | } | |
556 | } | |
557 | ||
558 | ||
559 | /* | |
f7deaa1a | 560 | * 'side_cb()' - Handle side-channel requests... |
561 | */ | |
562 | ||
563 | static void | |
568fa3fa MS |
564 | side_cb(int print_fd, /* I - Print file */ |
565 | int device_fd, /* I - Device file */ | |
566 | int snmp_fd, /* I - SNMP socket (unused) */ | |
567 | http_addr_t *addr, /* I - Device address (unused) */ | |
568 | int use_bc) /* I - Using back-channel? */ | |
f7deaa1a | 569 | { |
570 | cups_sc_command_t command; /* Request command */ | |
571 | cups_sc_status_t status; /* Request/response status */ | |
572 | char data[2048]; /* Request/response data */ | |
573 | int datalen; /* Request/response data size */ | |
574 | ||
575 | ||
568fa3fa MS |
576 | (void)snmp_fd; |
577 | (void)addr; | |
578 | ||
f7deaa1a | 579 | datalen = sizeof(data); |
580 | ||
581 | if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0)) | |
582 | { | |
db1f069b | 583 | _cupsLangPuts(stderr, _("WARNING: Failed to read side-channel request!\n")); |
f7deaa1a | 584 | return; |
585 | } | |
586 | ||
587 | switch (command) | |
588 | { | |
589 | case CUPS_SC_CMD_DRAIN_OUTPUT : | |
09a101d6 | 590 | if (backendDrainOutput(print_fd, device_fd)) |
591 | status = CUPS_SC_STATUS_IO_ERROR; | |
592 | else if (tcdrain(device_fd)) | |
f7deaa1a | 593 | status = CUPS_SC_STATUS_IO_ERROR; |
594 | else | |
595 | status = CUPS_SC_STATUS_OK; | |
596 | ||
597 | datalen = 0; | |
598 | break; | |
599 | ||
600 | case CUPS_SC_CMD_GET_BIDI : | |
8b450588 | 601 | status = CUPS_SC_STATUS_OK; |
f7deaa1a | 602 | data[0] = use_bc; |
603 | datalen = 1; | |
604 | break; | |
605 | ||
606 | case CUPS_SC_CMD_GET_DEVICE_ID : | |
607 | memset(data, 0, sizeof(data)); | |
608 | ||
609 | if (backendGetDeviceID(device_fd, data, sizeof(data) - 1, | |
610 | NULL, 0, NULL, NULL, 0)) | |
611 | { | |
612 | status = CUPS_SC_STATUS_NOT_IMPLEMENTED; | |
613 | datalen = 0; | |
614 | } | |
615 | else | |
616 | { | |
617 | status = CUPS_SC_STATUS_OK; | |
618 | datalen = strlen(data); | |
619 | } | |
620 | break; | |
621 | ||
622 | default : | |
623 | status = CUPS_SC_STATUS_NOT_IMPLEMENTED; | |
624 | datalen = 0; | |
625 | break; | |
626 | } | |
627 | ||
628 | cupsSideChannelWrite(command, status, data, datalen, 1.0); | |
629 | } | |
630 | ||
631 | ||
632 | /* | |
b19ccc9e | 633 | * End of "$Id: usb-unix.c 7810 2008-07-29 01:11:15Z mike $". |
ef416fc2 | 634 | */ |