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ef416fc2 | 1 | /* |
8ca02f3c | 2 | * "$Id: usb-unix.c 5726 2006-07-12 20:00:11Z 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 | * | |
bd7854cb | 8 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
ef416fc2 | 9 | * |
10 | * These coded instructions, statements, and computer programs are the | |
11 | * property of Easy Software Products and are protected by Federal | |
12 | * copyright law. Distribution and use rights are outlined in the file | |
13 | * "LICENSE" which should have been included with this file. If this | |
14 | * file is missing or damaged please contact Easy Software Products | |
15 | * at: | |
16 | * | |
17 | * Attn: CUPS Licensing Information | |
18 | * Easy Software Products | |
19 | * 44141 Airport View Drive, Suite 204 | |
20 | * Hollywood, Maryland 20636 USA | |
21 | * | |
22 | * Voice: (301) 373-9600 | |
23 | * EMail: cups-info@cups.org | |
24 | * WWW: http://www.cups.org | |
25 | * | |
26 | * This file is subject to the Apple OS-Developed Software exception. | |
27 | * | |
28 | * Contents: | |
29 | * | |
ed486911 | 30 | * print_device() - Print a file to a USB device. |
ef416fc2 | 31 | * list_devices() - List all USB devices. |
ed486911 | 32 | * open_device() - Open a USB device... |
ef416fc2 | 33 | */ |
34 | ||
35 | /* | |
36 | * Include necessary headers. | |
37 | */ | |
38 | ||
39 | #include "ieee1284.c" | |
40 | #include <sys/select.h> | |
41 | ||
42 | ||
43 | /* | |
44 | * Local functions... | |
45 | */ | |
46 | ||
8ca02f3c | 47 | int open_device(const char *uri, int *use_bc); |
ef416fc2 | 48 | |
49 | ||
50 | /* | |
51 | * 'print_device()' - Print a file to a USB device. | |
52 | */ | |
53 | ||
54 | int /* O - Exit status */ | |
55 | print_device(const char *uri, /* I - Device URI */ | |
56 | const char *hostname, /* I - Hostname/manufacturer */ | |
57 | const char *resource, /* I - Resource/modelname */ | |
58 | const char *options, /* I - Device options/serial number */ | |
ed486911 | 59 | int print_fd, /* I - File descriptor to print */ |
e53920b9 | 60 | int copies, /* I - Copies to print */ |
61 | int argc, /* I - Number of command-line arguments (6 or 7) */ | |
62 | char *argv[]) /* I - Command-line arguments */ | |
ef416fc2 | 63 | { |
ed486911 | 64 | int use_bc; /* Use backchannel path? */ |
65 | int device_fd; /* USB device */ | |
66 | size_t tbytes; /* Total number of bytes written */ | |
ef416fc2 | 67 | struct termios opts; /* Parallel port options */ |
ed486911 | 68 | |
ef416fc2 | 69 | |
e53920b9 | 70 | (void)argc; |
71 | (void)argv; | |
ef416fc2 | 72 | |
73 | /* | |
74 | * Open the USB port device... | |
75 | */ | |
76 | ||
757d2cad | 77 | fputs("STATE: +connecting-to-device\n", stderr); |
78 | ||
ef416fc2 | 79 | do |
80 | { | |
8ca02f3c | 81 | /* |
82 | * Disable backchannel data when printing to Canon USB printers - apparently | |
83 | * Canon printers will return the IEEE-1284 device ID over and over and over | |
84 | * when they get a read request... | |
85 | */ | |
86 | ||
87 | use_bc = strcasecmp(hostname, "Canon") != 0; | |
88 | ||
89 | if ((device_fd = open_device(uri, &use_bc)) == -1) | |
ef416fc2 | 90 | { |
91 | if (getenv("CLASS") != NULL) | |
92 | { | |
93 | /* | |
94 | * If the CLASS environment variable is set, the job was submitted | |
95 | * to a class and not to a specific queue. In this case, we want | |
96 | * to abort immediately so that the job can be requeued on the next | |
97 | * available printer in the class. | |
98 | */ | |
99 | ||
100 | fputs("INFO: Unable to open USB device, queuing on next printer in class...\n", | |
101 | stderr); | |
102 | ||
103 | /* | |
104 | * Sleep 5 seconds to keep the job from requeuing too rapidly... | |
105 | */ | |
106 | ||
107 | sleep(5); | |
108 | ||
109 | return (CUPS_BACKEND_FAILED); | |
110 | } | |
111 | ||
112 | if (errno == EBUSY) | |
113 | { | |
114 | fputs("INFO: USB port busy; will retry in 30 seconds...\n", stderr); | |
115 | sleep(30); | |
116 | } | |
ed486911 | 117 | else if (errno == ENXIO || errno == EIO || errno == ENOENT || |
118 | errno == ENODEV) | |
ef416fc2 | 119 | { |
120 | fputs("INFO: Printer not connected; will retry in 30 seconds...\n", stderr); | |
121 | sleep(30); | |
122 | } | |
123 | else | |
124 | { | |
125 | fprintf(stderr, "ERROR: Unable to open USB device \"%s\": %s\n", | |
126 | uri, strerror(errno)); | |
127 | return (CUPS_BACKEND_FAILED); | |
128 | } | |
129 | } | |
130 | } | |
ed486911 | 131 | while (device_fd < 0); |
ef416fc2 | 132 | |
757d2cad | 133 | fputs("STATE: -connecting-to-device\n", stderr); |
134 | ||
ef416fc2 | 135 | /* |
136 | * Set any options provided... | |
137 | */ | |
138 | ||
ed486911 | 139 | tcgetattr(device_fd, &opts); |
ef416fc2 | 140 | |
141 | opts.c_lflag &= ~(ICANON | ECHO | ISIG); /* Raw mode */ | |
142 | ||
143 | /**** No options supported yet ****/ | |
144 | ||
ed486911 | 145 | tcsetattr(device_fd, TCSANOW, &opts); |
ef416fc2 | 146 | |
ef416fc2 | 147 | /* |
148 | * Finally, send the print file... | |
149 | */ | |
150 | ||
ed486911 | 151 | tbytes = 0; |
ef416fc2 | 152 | |
ed486911 | 153 | while (copies > 0 && tbytes >= 0) |
ef416fc2 | 154 | { |
155 | copies --; | |
156 | ||
ed486911 | 157 | if (print_fd != 0) |
ef416fc2 | 158 | { |
159 | fputs("PAGE: 1 1\n", stderr); | |
ed486911 | 160 | lseek(print_fd, 0, SEEK_SET); |
ef416fc2 | 161 | } |
162 | ||
8ca02f3c | 163 | tbytes = backendRunLoop(print_fd, device_fd, use_bc); |
ef416fc2 | 164 | |
ed486911 | 165 | if (print_fd != 0 && tbytes >= 0) |
166 | fprintf(stderr, "INFO: Sent print file, " CUPS_LLFMT " bytes...\n", | |
167 | CUPS_LLCAST tbytes); | |
ef416fc2 | 168 | } |
169 | ||
170 | /* | |
171 | * Close the USB port and return... | |
172 | */ | |
173 | ||
ed486911 | 174 | close(device_fd); |
ef416fc2 | 175 | |
ed486911 | 176 | return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK); |
ef416fc2 | 177 | } |
178 | ||
179 | ||
180 | /* | |
181 | * 'list_devices()' - List all USB devices. | |
182 | */ | |
183 | ||
184 | void | |
185 | list_devices(void) | |
186 | { | |
187 | #ifdef __linux | |
188 | int i; /* Looping var */ | |
189 | int fd; /* File descriptor */ | |
190 | char format[255], /* Format for device filename */ | |
191 | device[255], /* Device filename */ | |
192 | device_id[1024], /* Device ID string */ | |
193 | device_uri[1024], /* Device URI string */ | |
194 | make_model[1024]; /* Make and model */ | |
195 | ||
196 | ||
197 | /* | |
198 | * First figure out which USB printer filename to use... | |
199 | */ | |
200 | ||
201 | if (!access("/dev/usblp0", 0)) | |
202 | strcpy(format, "/dev/usblp%d"); | |
203 | else if (!access("/dev/usb/usblp0", 0)) | |
204 | strcpy(format, "/dev/usb/usblp%d"); | |
205 | else | |
206 | strcpy(format, "/dev/usb/lp%d"); | |
207 | ||
208 | /* | |
209 | * Then open each USB device... | |
210 | */ | |
211 | ||
212 | for (i = 0; i < 16; i ++) | |
213 | { | |
214 | sprintf(device, format, i); | |
215 | ||
216 | if ((fd = open(device, O_RDWR | O_EXCL)) >= 0) | |
217 | { | |
ed486911 | 218 | if (!backendGetDeviceID(fd, device_id, sizeof(device_id), |
219 | make_model, sizeof(make_model), | |
220 | "usb", device_uri, sizeof(device_uri))) | |
ef416fc2 | 221 | printf("direct %s \"%s\" \"%s USB #%d\" \"%s\"\n", device_uri, |
222 | make_model, make_model, i + 1, device_id); | |
223 | ||
224 | close(fd); | |
225 | } | |
226 | } | |
227 | #elif defined(__sgi) | |
228 | #elif defined(__sun) && defined(ECPPIOC_GETDEVID) | |
229 | int i; /* Looping var */ | |
230 | int fd; /* File descriptor */ | |
231 | char device[255], /* Device filename */ | |
232 | device_id[1024], /* Device ID string */ | |
233 | device_uri[1024], /* Device URI string */ | |
234 | make_model[1024]; /* Make and model */ | |
ef416fc2 | 235 | |
236 | ||
237 | /* | |
238 | * Open each USB device... | |
239 | */ | |
240 | ||
241 | for (i = 0; i < 8; i ++) | |
242 | { | |
243 | sprintf(device, "/dev/usb/printer%d", i); | |
244 | ||
8ca02f3c | 245 | if ((fd = open(device, O_WRONLY | O_EXCL)) >= 0) |
ef416fc2 | 246 | { |
ed486911 | 247 | if (!backendGetDeviceID(fd, device_id, sizeof(device_id), |
248 | make_model, sizeof(make_model), | |
249 | "usb", device_uri, sizeof(device_uri))) | |
ef416fc2 | 250 | printf("direct %s \"%s\" \"%s USB #%d\" \"%s\"\n", device_uri, |
251 | make_model, make_model, i + 1, device_id); | |
252 | ||
253 | close(fd); | |
254 | } | |
255 | } | |
256 | #elif defined(__hpux) | |
257 | #elif defined(__osf) | |
b423cd4c | 258 | #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) |
ef416fc2 | 259 | int i; /* Looping var */ |
260 | char device[255]; /* Device filename */ | |
261 | ||
262 | ||
263 | for (i = 0; i < 8; i ++) | |
264 | { | |
265 | sprintf(device, "/dev/ulpt%d", i); | |
266 | if (!access(device, 0)) | |
267 | printf("direct usb:%s \"Unknown\" \"USB Printer #%d\"\n", device, i + 1); | |
268 | ||
269 | sprintf(device, "/dev/unlpt%d", i); | |
270 | if (!access(device, 0)) | |
271 | printf("direct usb:%s \"Unknown\" \"USB Printer #%d (no reset)\"\n", device, i + 1); | |
272 | } | |
273 | #endif | |
274 | } | |
275 | ||
276 | ||
277 | /* | |
278 | * 'open_device()' - Open a USB device... | |
279 | */ | |
280 | ||
281 | int /* O - File descriptor or -1 on error */ | |
8ca02f3c | 282 | open_device(const char *uri, /* I - Device URI */ |
283 | int *use_bc) /* O - Set to 0 for unidirectional */ | |
ef416fc2 | 284 | { |
8ca02f3c | 285 | int fd; /* File descriptor */ |
286 | ||
287 | ||
ef416fc2 | 288 | /* |
289 | * The generic implementation just treats the URI as a device filename... | |
290 | * Specific operating systems may also support using the device serial | |
291 | * number and/or make/model. | |
292 | */ | |
293 | ||
294 | if (!strncmp(uri, "usb:/dev/", 9)) | |
295 | #ifdef __linux | |
ed486911 | 296 | { |
297 | /* | |
298 | * Do not allow direct devices anymore... | |
299 | */ | |
300 | ||
301 | errno = ENODEV; | |
302 | return (-1); | |
303 | } | |
ef416fc2 | 304 | else if (!strncmp(uri, "usb://", 6)) |
305 | { | |
306 | /* | |
307 | * For Linux, try looking up the device serial number or model... | |
308 | */ | |
309 | ||
310 | int i; /* Looping var */ | |
311 | int busy; /* Are any ports busy? */ | |
ef416fc2 | 312 | char format[255], /* Format for device filename */ |
313 | device[255], /* Device filename */ | |
314 | device_id[1024], /* Device ID string */ | |
315 | make_model[1024], /* Make and model */ | |
316 | device_uri[1024]; /* Device URI string */ | |
317 | ||
318 | ||
319 | /* | |
320 | * First figure out which USB printer filename to use... | |
321 | */ | |
322 | ||
323 | if (!access("/dev/usblp0", 0)) | |
324 | strcpy(format, "/dev/usblp%d"); | |
325 | else if (!access("/dev/usb/usblp0", 0)) | |
326 | strcpy(format, "/dev/usb/usblp%d"); | |
327 | else | |
328 | strcpy(format, "/dev/usb/lp%d"); | |
329 | ||
330 | /* | |
331 | * Then find the correct USB device... | |
332 | */ | |
333 | ||
334 | do | |
335 | { | |
336 | for (busy = 0, i = 0; i < 16; i ++) | |
337 | { | |
338 | sprintf(device, format, i); | |
339 | ||
340 | if ((fd = open(device, O_RDWR | O_EXCL)) >= 0) | |
341 | { | |
ed486911 | 342 | backendGetDeviceID(fd, device_id, sizeof(device_id), |
343 | make_model, sizeof(make_model), | |
344 | "usb", device_uri, sizeof(device_uri)); | |
ef416fc2 | 345 | } |
346 | else | |
347 | { | |
348 | /* | |
349 | * If the open failed because it was busy, flag it so we retry | |
350 | * as needed... | |
351 | */ | |
352 | ||
353 | if (errno == EBUSY) | |
354 | busy = 1; | |
355 | ||
356 | device_uri[0] = '\0'; | |
357 | } | |
358 | ||
359 | if (!strcmp(uri, device_uri)) | |
360 | { | |
361 | /* | |
362 | * Yes, return this file descriptor... | |
363 | */ | |
364 | ||
365 | fprintf(stderr, "DEBUG: Printer using device file \"%s\"...\n", device); | |
366 | ||
367 | return (fd); | |
368 | } | |
369 | ||
370 | /* | |
371 | * This wasn't the one... | |
372 | */ | |
373 | ||
374 | if (fd >= 0) | |
375 | close(fd); | |
376 | } | |
377 | ||
378 | /* | |
379 | * If we get here and at least one of the printer ports showed up | |
380 | * as "busy", then sleep for a bit and retry... | |
381 | */ | |
382 | ||
383 | if (busy) | |
384 | { | |
385 | fputs("INFO: USB printer is busy; will retry in 5 seconds...\n", | |
386 | stderr); | |
387 | sleep(5); | |
388 | } | |
389 | } | |
390 | while (busy); | |
391 | ||
392 | /* | |
393 | * Couldn't find the printer, return "no such device or address"... | |
394 | */ | |
395 | ||
396 | errno = ENODEV; | |
397 | ||
398 | return (-1); | |
399 | } | |
400 | #elif defined(__sun) && defined(ECPPIOC_GETDEVID) | |
ed486911 | 401 | { |
402 | /* | |
403 | * Do not allow direct devices anymore... | |
404 | */ | |
405 | ||
406 | errno = ENODEV; | |
407 | return (-1); | |
408 | } | |
ef416fc2 | 409 | else if (!strncmp(uri, "usb://", 6)) |
410 | { | |
411 | /* | |
412 | * For Solaris, try looking up the device serial number or model... | |
413 | */ | |
414 | ||
415 | int i; /* Looping var */ | |
416 | int busy; /* Are any ports busy? */ | |
ef416fc2 | 417 | char device[255], /* Device filename */ |
418 | device_id[1024], /* Device ID string */ | |
419 | make_model[1024], /* Make and model */ | |
420 | device_uri[1024]; /* Device URI string */ | |
ef416fc2 | 421 | |
422 | ||
423 | /* | |
424 | * Find the correct USB device... | |
425 | */ | |
426 | ||
427 | do | |
428 | { | |
429 | for (i = 0, busy = 0; i < 8; i ++) | |
430 | { | |
431 | sprintf(device, "/dev/usb/printer%d", i); | |
432 | ||
8ca02f3c | 433 | if ((fd = open(device, O_WRONLY | O_EXCL)) >= 0) |
ed486911 | 434 | backendGetDeviceID(fd, device_id, sizeof(device_id), |
435 | make_model, sizeof(make_model), | |
436 | "usb", device_uri, sizeof(device_uri)); | |
ef416fc2 | 437 | else |
438 | { | |
439 | /* | |
440 | * If the open failed because it was busy, flag it so we retry | |
441 | * as needed... | |
442 | */ | |
443 | ||
444 | if (errno == EBUSY) | |
445 | busy = 1; | |
446 | ||
447 | device_uri[0] = '\0'; | |
448 | } | |
449 | ||
450 | if (!strcmp(uri, device_uri)) | |
8ca02f3c | 451 | { |
452 | /* | |
453 | * Yes, return this file descriptor... | |
454 | */ | |
455 | ||
456 | fputs("DEBUG: Setting use_bc to 0!\n", stderr); | |
457 | ||
458 | *use_bc = 0; | |
459 | ||
460 | return (fd); | |
461 | } | |
ef416fc2 | 462 | |
463 | /* | |
464 | * This wasn't the one... | |
465 | */ | |
466 | ||
467 | if (fd >= 0) | |
468 | close(fd); | |
469 | } | |
470 | ||
471 | /* | |
472 | * If we get here and at least one of the printer ports showed up | |
473 | * as "busy", then sleep for a bit and retry... | |
474 | */ | |
475 | ||
476 | if (busy) | |
477 | { | |
478 | fputs("INFO: USB printer is busy; will retry in 5 seconds...\n", | |
479 | stderr); | |
480 | sleep(5); | |
481 | } | |
482 | } | |
483 | while (busy); | |
484 | ||
485 | /* | |
486 | * Couldn't find the printer, return "no such device or address"... | |
487 | */ | |
488 | ||
489 | errno = ENODEV; | |
490 | ||
491 | return (-1); | |
492 | } | |
493 | #else | |
8ca02f3c | 494 | { |
495 | if ((fd = open(uri + 4, O_RDWR | O_EXCL)) < 0) | |
496 | { | |
497 | fd = open(uri + 4, O_WRONLY | O_EXCL); | |
498 | *use_bc = 0; | |
499 | } | |
500 | ||
501 | return (fd); | |
502 | } | |
ef416fc2 | 503 | #endif /* __linux */ |
504 | else | |
505 | { | |
506 | errno = ENODEV; | |
507 | return (-1); | |
508 | } | |
509 | } | |
510 | ||
511 | ||
512 | /* | |
8ca02f3c | 513 | * End of "$Id: usb-unix.c 5726 2006-07-12 20:00:11Z mike $". |
ef416fc2 | 514 | */ |