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ef416fc2 | 1 | /* |
e1d6a774 | 2 | * "$Id: usb-unix.c 5259 2006-03-09 19:22:36Z 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 | * | |
30 | * main() - Send a file to the specified USB port. | |
31 | * list_devices() - List all USB devices. | |
32 | */ | |
33 | ||
34 | /* | |
35 | * Include necessary headers. | |
36 | */ | |
37 | ||
38 | #include "ieee1284.c" | |
39 | #include <sys/select.h> | |
40 | ||
41 | ||
42 | /* | |
43 | * Local functions... | |
44 | */ | |
45 | ||
46 | int open_device(const char *uri); | |
47 | ||
48 | ||
49 | /* | |
50 | * 'print_device()' - Print a file to a USB device. | |
51 | */ | |
52 | ||
53 | int /* O - Exit status */ | |
54 | print_device(const char *uri, /* I - Device URI */ | |
55 | const char *hostname, /* I - Hostname/manufacturer */ | |
56 | const char *resource, /* I - Resource/modelname */ | |
57 | const char *options, /* I - Device options/serial number */ | |
58 | int fp, /* I - File descriptor to print */ | |
59 | int copies) /* I - Copies to print */ | |
60 | { | |
61 | int fd; /* USB device */ | |
62 | int rbytes; /* Number of bytes read */ | |
63 | int wbytes; /* Number of bytes written */ | |
64 | size_t nbytes, /* Number of bytes read */ | |
65 | tbytes; /* Total number of bytes written */ | |
66 | char buffer[8192], /* Output buffer */ | |
67 | *bufptr, /* Pointer into buffer */ | |
68 | backbuf[1024]; /* Backchannel buffer */ | |
69 | struct termios opts; /* Parallel port options */ | |
70 | fd_set input, /* Input set for select() */ | |
71 | output; /* Output set for select() */ | |
72 | int paperout; /* Paper out? */ | |
73 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
74 | struct sigaction action; /* Actions for POSIX signals */ | |
75 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
76 | #ifdef __linux | |
77 | unsigned int status; /* Port status (off-line, out-of-paper, etc.) */ | |
78 | #endif /* __linux */ | |
79 | ||
80 | ||
81 | /* | |
82 | * Open the USB port device... | |
83 | */ | |
84 | ||
757d2cad | 85 | fputs("STATE: +connecting-to-device\n", stderr); |
86 | ||
ef416fc2 | 87 | do |
88 | { | |
89 | if ((fd = open_device(uri)) == -1) | |
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 | } | |
117 | else if (errno == ENXIO || errno == EIO || errno == ENOENT || errno == ENODEV) | |
118 | { | |
119 | fputs("INFO: Printer not connected; will retry in 30 seconds...\n", stderr); | |
120 | sleep(30); | |
121 | } | |
122 | else | |
123 | { | |
124 | fprintf(stderr, "ERROR: Unable to open USB device \"%s\": %s\n", | |
125 | uri, strerror(errno)); | |
126 | return (CUPS_BACKEND_FAILED); | |
127 | } | |
128 | } | |
129 | } | |
130 | while (fd < 0); | |
131 | ||
757d2cad | 132 | fputs("STATE: -connecting-to-device\n", stderr); |
133 | ||
ef416fc2 | 134 | /* |
135 | * Set any options provided... | |
136 | */ | |
137 | ||
138 | tcgetattr(fd, &opts); | |
139 | ||
140 | opts.c_lflag &= ~(ICANON | ECHO | ISIG); /* Raw mode */ | |
141 | ||
142 | /**** No options supported yet ****/ | |
143 | ||
144 | tcsetattr(fd, TCSANOW, &opts); | |
145 | ||
146 | /* | |
147 | * Check printer status... | |
148 | */ | |
149 | ||
150 | paperout = 0; | |
151 | ||
152 | #if defined(__linux) && defined(LP_POUTPA) | |
153 | /* | |
154 | * Show the printer status before we send the file... | |
155 | */ | |
156 | ||
157 | while (!ioctl(fd, LPGETSTATUS, &status)) | |
158 | { | |
159 | fprintf(stderr, "DEBUG: LPGETSTATUS returned a port status of %02X...\n", status); | |
160 | ||
161 | if (status & LP_POUTPA) | |
162 | { | |
163 | fputs("WARNING: Media tray empty!\n", stderr); | |
164 | fputs("STATUS: +media-tray-empty-error\n", stderr); | |
165 | ||
166 | paperout = 1; | |
167 | } | |
168 | ||
169 | if (!(status & LP_PERRORP)) | |
170 | fputs("WARNING: Printer fault!\n", stderr); | |
171 | else if (!(status & LP_PSELECD)) | |
172 | fputs("WARNING: Printer off-line.\n", stderr); | |
173 | else | |
174 | break; | |
175 | ||
176 | sleep(5); | |
177 | } | |
178 | #endif /* __linux && LP_POUTPA */ | |
179 | ||
180 | /* | |
181 | * Now that we are "connected" to the port, ignore SIGTERM so that we | |
182 | * can finish out any page data the driver sends (e.g. to eject the | |
183 | * current page... Only ignore SIGTERM if we are printing data from | |
184 | * stdin (otherwise you can't cancel raw jobs...) | |
185 | */ | |
186 | ||
187 | if (!fp) | |
188 | { | |
189 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
190 | sigset(SIGTERM, SIG_IGN); | |
191 | #elif defined(HAVE_SIGACTION) | |
192 | memset(&action, 0, sizeof(action)); | |
193 | ||
194 | sigemptyset(&action.sa_mask); | |
195 | action.sa_handler = SIG_IGN; | |
196 | sigaction(SIGTERM, &action, NULL); | |
197 | #else | |
198 | signal(SIGTERM, SIG_IGN); | |
199 | #endif /* HAVE_SIGSET */ | |
200 | } | |
201 | ||
202 | /* | |
203 | * Finally, send the print file... | |
204 | */ | |
205 | ||
206 | wbytes = 0; | |
207 | ||
208 | while (copies > 0) | |
209 | { | |
210 | copies --; | |
211 | ||
212 | if (fp != 0) | |
213 | { | |
214 | fputs("PAGE: 1 1\n", stderr); | |
215 | lseek(fp, 0, SEEK_SET); | |
216 | } | |
217 | ||
218 | tbytes = 0; | |
219 | while ((nbytes = read(fp, buffer, sizeof(buffer))) > 0) | |
220 | { | |
221 | /* | |
222 | * Write the print data to the printer... | |
223 | */ | |
224 | ||
225 | tbytes += nbytes; | |
226 | bufptr = buffer; | |
227 | ||
228 | while (nbytes > 0) | |
229 | { | |
230 | /* | |
231 | * See if we are ready to read or write... | |
232 | */ | |
233 | ||
234 | do | |
235 | { | |
236 | FD_ZERO(&input); | |
237 | FD_SET(fd, &input); | |
238 | FD_ZERO(&output); | |
239 | FD_SET(fd, &output); | |
240 | } | |
241 | while (select(fd + 1, &input, &output, NULL, NULL) < 0); | |
242 | ||
243 | if (FD_ISSET(fd, &input)) | |
244 | { | |
245 | /* | |
246 | * Read backchannel data... | |
247 | */ | |
248 | ||
249 | if ((rbytes = read(fd, backbuf, sizeof(backbuf))) > 0) | |
250 | { | |
251 | fprintf(stderr, "DEBUG: Received %d bytes of back-channel data!\n", | |
252 | rbytes); | |
bd7854cb | 253 | cupsBackChannelWrite(backbuf, rbytes, 1.0); |
ef416fc2 | 254 | } |
255 | } | |
256 | ||
257 | if (FD_ISSET(fd, &output)) | |
258 | { | |
259 | /* | |
260 | * Write print data... | |
261 | */ | |
262 | ||
263 | if ((wbytes = write(fd, bufptr, nbytes)) < 0) | |
264 | if (errno == ENOTTY) | |
265 | wbytes = write(fd, bufptr, nbytes); | |
266 | ||
267 | if (wbytes < 0) | |
268 | { | |
269 | /* | |
270 | * Check for retryable errors... | |
271 | */ | |
272 | ||
273 | if (errno == ENOSPC) | |
274 | { | |
275 | paperout = 1; | |
276 | fputs("ERROR: Out of paper!\n", stderr); | |
277 | fputs("STATUS: +media-tray-empty-error\n", stderr); | |
278 | } | |
279 | else if (errno != EAGAIN && errno != EINTR) | |
280 | { | |
281 | perror("ERROR: Unable to send print file to printer"); | |
282 | break; | |
283 | } | |
284 | } | |
285 | else | |
286 | { | |
287 | /* | |
288 | * Update count and pointer... | |
289 | */ | |
290 | ||
291 | if (paperout) | |
292 | { | |
293 | fputs("STATUS: -media-tray-empty-error\n", stderr); | |
294 | paperout = 0; | |
295 | } | |
296 | ||
297 | nbytes -= wbytes; | |
298 | bufptr += wbytes; | |
299 | } | |
300 | } | |
301 | } | |
302 | ||
303 | if (wbytes < 0) | |
304 | break; | |
305 | ||
306 | if (fp) | |
307 | fprintf(stderr, "INFO: Sending print file, %lu bytes...\n", | |
308 | (unsigned long)tbytes); | |
309 | } | |
310 | } | |
311 | ||
312 | /* | |
313 | * Close the USB port and return... | |
314 | */ | |
315 | ||
316 | close(fd); | |
317 | ||
318 | return (wbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK); | |
319 | } | |
320 | ||
321 | ||
322 | /* | |
323 | * 'list_devices()' - List all USB devices. | |
324 | */ | |
325 | ||
326 | void | |
327 | list_devices(void) | |
328 | { | |
329 | #ifdef __linux | |
330 | int i; /* Looping var */ | |
331 | int fd; /* File descriptor */ | |
332 | char format[255], /* Format for device filename */ | |
333 | device[255], /* Device filename */ | |
334 | device_id[1024], /* Device ID string */ | |
335 | device_uri[1024], /* Device URI string */ | |
336 | make_model[1024]; /* Make and model */ | |
337 | ||
338 | ||
339 | /* | |
340 | * First figure out which USB printer filename to use... | |
341 | */ | |
342 | ||
343 | if (!access("/dev/usblp0", 0)) | |
344 | strcpy(format, "/dev/usblp%d"); | |
345 | else if (!access("/dev/usb/usblp0", 0)) | |
346 | strcpy(format, "/dev/usb/usblp%d"); | |
347 | else | |
348 | strcpy(format, "/dev/usb/lp%d"); | |
349 | ||
350 | /* | |
351 | * Then open each USB device... | |
352 | */ | |
353 | ||
354 | for (i = 0; i < 16; i ++) | |
355 | { | |
356 | sprintf(device, format, i); | |
357 | ||
358 | if ((fd = open(device, O_RDWR | O_EXCL)) >= 0) | |
359 | { | |
360 | if (!get_device_id(fd, device_id, sizeof(device_id), | |
361 | make_model, sizeof(make_model), | |
362 | "usb", device_uri, sizeof(device_uri))) | |
363 | printf("direct %s \"%s\" \"%s USB #%d\" \"%s\"\n", device_uri, | |
364 | make_model, make_model, i + 1, device_id); | |
365 | ||
366 | close(fd); | |
367 | } | |
368 | } | |
369 | #elif defined(__sgi) | |
370 | #elif defined(__sun) && defined(ECPPIOC_GETDEVID) | |
371 | int i; /* Looping var */ | |
372 | int fd; /* File descriptor */ | |
373 | char device[255], /* Device filename */ | |
374 | device_id[1024], /* Device ID string */ | |
375 | device_uri[1024], /* Device URI string */ | |
376 | make_model[1024]; /* Make and model */ | |
ef416fc2 | 377 | |
378 | ||
379 | /* | |
380 | * Open each USB device... | |
381 | */ | |
382 | ||
383 | for (i = 0; i < 8; i ++) | |
384 | { | |
385 | sprintf(device, "/dev/usb/printer%d", i); | |
386 | ||
387 | if ((fd = open(device, O_RDWR | O_EXCL)) >= 0) | |
388 | { | |
389 | if (!get_device_id(fd, device_id, sizeof(device_id), | |
390 | make_model, sizeof(make_model), | |
391 | "usb", device_uri, sizeof(device_uri))) | |
392 | printf("direct %s \"%s\" \"%s USB #%d\" \"%s\"\n", device_uri, | |
393 | make_model, make_model, i + 1, device_id); | |
394 | ||
395 | close(fd); | |
396 | } | |
397 | } | |
398 | #elif defined(__hpux) | |
399 | #elif defined(__osf) | |
b423cd4c | 400 | #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) |
ef416fc2 | 401 | int i; /* Looping var */ |
402 | char device[255]; /* Device filename */ | |
403 | ||
404 | ||
405 | for (i = 0; i < 8; i ++) | |
406 | { | |
407 | sprintf(device, "/dev/ulpt%d", i); | |
408 | if (!access(device, 0)) | |
409 | printf("direct usb:%s \"Unknown\" \"USB Printer #%d\"\n", device, i + 1); | |
410 | ||
411 | sprintf(device, "/dev/unlpt%d", i); | |
412 | if (!access(device, 0)) | |
413 | printf("direct usb:%s \"Unknown\" \"USB Printer #%d (no reset)\"\n", device, i + 1); | |
414 | } | |
415 | #endif | |
416 | } | |
417 | ||
418 | ||
419 | /* | |
420 | * 'open_device()' - Open a USB device... | |
421 | */ | |
422 | ||
423 | int /* O - File descriptor or -1 on error */ | |
424 | open_device(const char *uri) /* I - Device URI */ | |
425 | { | |
426 | /* | |
427 | * The generic implementation just treats the URI as a device filename... | |
428 | * Specific operating systems may also support using the device serial | |
429 | * number and/or make/model. | |
430 | */ | |
431 | ||
432 | if (!strncmp(uri, "usb:/dev/", 9)) | |
433 | #ifdef __linux | |
434 | return (-1); /* Do not allow direct devices anymore */ | |
435 | else if (!strncmp(uri, "usb://", 6)) | |
436 | { | |
437 | /* | |
438 | * For Linux, try looking up the device serial number or model... | |
439 | */ | |
440 | ||
441 | int i; /* Looping var */ | |
442 | int busy; /* Are any ports busy? */ | |
443 | int fd; /* File descriptor */ | |
444 | char format[255], /* Format for device filename */ | |
445 | device[255], /* Device filename */ | |
446 | device_id[1024], /* Device ID string */ | |
447 | make_model[1024], /* Make and model */ | |
448 | device_uri[1024]; /* Device URI string */ | |
449 | ||
450 | ||
451 | /* | |
452 | * First figure out which USB printer filename to use... | |
453 | */ | |
454 | ||
455 | if (!access("/dev/usblp0", 0)) | |
456 | strcpy(format, "/dev/usblp%d"); | |
457 | else if (!access("/dev/usb/usblp0", 0)) | |
458 | strcpy(format, "/dev/usb/usblp%d"); | |
459 | else | |
460 | strcpy(format, "/dev/usb/lp%d"); | |
461 | ||
462 | /* | |
463 | * Then find the correct USB device... | |
464 | */ | |
465 | ||
466 | do | |
467 | { | |
468 | for (busy = 0, i = 0; i < 16; i ++) | |
469 | { | |
470 | sprintf(device, format, i); | |
471 | ||
472 | if ((fd = open(device, O_RDWR | O_EXCL)) >= 0) | |
473 | { | |
474 | get_device_id(fd, device_id, sizeof(device_id), | |
475 | make_model, sizeof(make_model), | |
476 | "usb", device_uri, sizeof(device_uri)); | |
477 | } | |
478 | else | |
479 | { | |
480 | /* | |
481 | * If the open failed because it was busy, flag it so we retry | |
482 | * as needed... | |
483 | */ | |
484 | ||
485 | if (errno == EBUSY) | |
486 | busy = 1; | |
487 | ||
488 | device_uri[0] = '\0'; | |
489 | } | |
490 | ||
491 | if (!strcmp(uri, device_uri)) | |
492 | { | |
493 | /* | |
494 | * Yes, return this file descriptor... | |
495 | */ | |
496 | ||
497 | fprintf(stderr, "DEBUG: Printer using device file \"%s\"...\n", device); | |
498 | ||
499 | return (fd); | |
500 | } | |
501 | ||
502 | /* | |
503 | * This wasn't the one... | |
504 | */ | |
505 | ||
506 | if (fd >= 0) | |
507 | close(fd); | |
508 | } | |
509 | ||
510 | /* | |
511 | * If we get here and at least one of the printer ports showed up | |
512 | * as "busy", then sleep for a bit and retry... | |
513 | */ | |
514 | ||
515 | if (busy) | |
516 | { | |
517 | fputs("INFO: USB printer is busy; will retry in 5 seconds...\n", | |
518 | stderr); | |
519 | sleep(5); | |
520 | } | |
521 | } | |
522 | while (busy); | |
523 | ||
524 | /* | |
525 | * Couldn't find the printer, return "no such device or address"... | |
526 | */ | |
527 | ||
528 | errno = ENODEV; | |
529 | ||
530 | return (-1); | |
531 | } | |
532 | #elif defined(__sun) && defined(ECPPIOC_GETDEVID) | |
533 | return (-1); /* Do not allow direct devices anymore */ | |
534 | else if (!strncmp(uri, "usb://", 6)) | |
535 | { | |
536 | /* | |
537 | * For Solaris, try looking up the device serial number or model... | |
538 | */ | |
539 | ||
540 | int i; /* Looping var */ | |
541 | int busy; /* Are any ports busy? */ | |
542 | int fd; /* File descriptor */ | |
543 | char device[255], /* Device filename */ | |
544 | device_id[1024], /* Device ID string */ | |
545 | make_model[1024], /* Make and model */ | |
546 | device_uri[1024]; /* Device URI string */ | |
ef416fc2 | 547 | |
548 | ||
549 | /* | |
550 | * Find the correct USB device... | |
551 | */ | |
552 | ||
553 | do | |
554 | { | |
555 | for (i = 0, busy = 0; i < 8; i ++) | |
556 | { | |
557 | sprintf(device, "/dev/usb/printer%d", i); | |
558 | ||
559 | if ((fd = open(device, O_RDWR | O_EXCL)) >= 0) | |
560 | get_device_id(fd, device_id, sizeof(device_id), | |
561 | make_model, sizeof(make_model), | |
562 | "usb", device_uri, sizeof(device_uri)); | |
563 | else | |
564 | { | |
565 | /* | |
566 | * If the open failed because it was busy, flag it so we retry | |
567 | * as needed... | |
568 | */ | |
569 | ||
570 | if (errno == EBUSY) | |
571 | busy = 1; | |
572 | ||
573 | device_uri[0] = '\0'; | |
574 | } | |
575 | ||
576 | if (!strcmp(uri, device_uri)) | |
577 | return (fd); /* Yes, return this file descriptor... */ | |
578 | ||
579 | /* | |
580 | * This wasn't the one... | |
581 | */ | |
582 | ||
583 | if (fd >= 0) | |
584 | close(fd); | |
585 | } | |
586 | ||
587 | /* | |
588 | * If we get here and at least one of the printer ports showed up | |
589 | * as "busy", then sleep for a bit and retry... | |
590 | */ | |
591 | ||
592 | if (busy) | |
593 | { | |
594 | fputs("INFO: USB printer is busy; will retry in 5 seconds...\n", | |
595 | stderr); | |
596 | sleep(5); | |
597 | } | |
598 | } | |
599 | while (busy); | |
600 | ||
601 | /* | |
602 | * Couldn't find the printer, return "no such device or address"... | |
603 | */ | |
604 | ||
605 | errno = ENODEV; | |
606 | ||
607 | return (-1); | |
608 | } | |
609 | #else | |
610 | return (open(uri + 4, O_RDWR | O_EXCL)); | |
611 | #endif /* __linux */ | |
612 | else | |
613 | { | |
614 | errno = ENODEV; | |
615 | return (-1); | |
616 | } | |
617 | } | |
618 | ||
619 | ||
620 | /* | |
e1d6a774 | 621 | * End of "$Id: usb-unix.c 5259 2006-03-09 19:22:36Z mike $". |
ef416fc2 | 622 | */ |