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ef416fc2 | 1 | /* |
2e4ff8af | 2 | * "$Id: parallel.c 7019 2007-10-10 22:48:52Z mike $" |
ef416fc2 | 3 | * |
4 | * Parallel port backend for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
f7deaa1a | 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 specified parallel port. | |
20 | * list_devices() - List all parallel devices. | |
f7deaa1a | 21 | * side_cb() - Handle side-channel requests... |
ef416fc2 | 22 | */ |
23 | ||
24 | /* | |
25 | * Include necessary headers. | |
26 | */ | |
27 | ||
ed486911 | 28 | #include "backend-private.h" |
ef416fc2 | 29 | |
b423cd4c | 30 | #ifdef __hpux |
31 | # include <sys/time.h> | |
32 | #else | |
33 | # include <sys/select.h> | |
34 | #endif /* __hpux */ | |
35 | ||
ef416fc2 | 36 | #ifdef WIN32 |
37 | # include <io.h> | |
38 | #else | |
39 | # include <unistd.h> | |
40 | # include <fcntl.h> | |
41 | # include <termios.h> | |
42 | # include <sys/socket.h> | |
43 | #endif /* WIN32 */ | |
44 | ||
45 | #ifdef __sgi | |
46 | # include <invent.h> | |
47 | # ifndef INV_EPP_ECP_PLP | |
48 | # define INV_EPP_ECP_PLP 6 /* From 6.3/6.4/6.5 sys/invent.h */ | |
49 | # define INV_ASO_SERIAL 14 /* serial portion of SGI ASO board */ | |
50 | # define INV_IOC3_DMA 16 /* DMA mode IOC3 serial */ | |
51 | # define INV_IOC3_PIO 17 /* PIO mode IOC3 serial */ | |
52 | # define INV_ISA_DMA 19 /* DMA mode ISA serial -- O2 */ | |
53 | # endif /* !INV_EPP_ECP_PLP */ | |
54 | #endif /* __sgi */ | |
55 | ||
56 | ||
57 | /* | |
58 | * Local functions... | |
59 | */ | |
60 | ||
f7deaa1a | 61 | static void list_devices(void); |
62 | static void side_cb(int print_fd, int device_fd, int use_bc); | |
ef416fc2 | 63 | |
64 | ||
65 | /* | |
66 | * 'main()' - Send a file to the specified parallel port. | |
67 | * | |
68 | * Usage: | |
69 | * | |
70 | * printer-uri job-id user title copies options [file] | |
71 | */ | |
72 | ||
73 | int /* O - Exit status */ | |
74 | main(int argc, /* I - Number of command-line arguments (6 or 7) */ | |
75 | char *argv[]) /* I - Command-line arguments */ | |
76 | { | |
77 | char method[255], /* Method in URI */ | |
78 | hostname[1024], /* Hostname */ | |
79 | username[255], /* Username info (not used) */ | |
80 | resource[1024], /* Resource info (device and options) */ | |
81 | *options; /* Pointer to options */ | |
82 | int port; /* Port number (not used) */ | |
ed486911 | 83 | int print_fd, /* Print file */ |
26d47ec6 | 84 | device_fd, /* Parallel device */ |
85 | use_bc; /* Read back-channel data? */ | |
ef416fc2 | 86 | int copies; /* Number of copies to print */ |
ed486911 | 87 | size_t tbytes; /* Total number of bytes written */ |
ef416fc2 | 88 | struct termios opts; /* Parallel port options */ |
ef416fc2 | 89 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) |
90 | struct sigaction action; /* Actions for POSIX signals */ | |
91 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
ef416fc2 | 92 | |
93 | ||
94 | /* | |
95 | * Make sure status messages are not buffered... | |
96 | */ | |
97 | ||
98 | setbuf(stderr, NULL); | |
99 | ||
100 | /* | |
101 | * Ignore SIGPIPE signals... | |
102 | */ | |
103 | ||
104 | #ifdef HAVE_SIGSET | |
105 | sigset(SIGPIPE, SIG_IGN); | |
106 | #elif defined(HAVE_SIGACTION) | |
107 | memset(&action, 0, sizeof(action)); | |
108 | action.sa_handler = SIG_IGN; | |
109 | sigaction(SIGPIPE, &action, NULL); | |
110 | #else | |
111 | signal(SIGPIPE, SIG_IGN); | |
112 | #endif /* HAVE_SIGSET */ | |
113 | ||
114 | /* | |
115 | * Check command-line... | |
116 | */ | |
117 | ||
118 | if (argc == 1) | |
119 | { | |
120 | list_devices(); | |
121 | return (CUPS_BACKEND_OK); | |
122 | } | |
123 | else if (argc < 6 || argc > 7) | |
124 | { | |
db1f069b MS |
125 | _cupsLangPrintf(stderr, |
126 | _("Usage: %s job-id user title copies options [file]\n"), | |
127 | argv[0]); | |
ef416fc2 | 128 | return (CUPS_BACKEND_FAILED); |
129 | } | |
130 | ||
131 | /* | |
132 | * If we have 7 arguments, print the file named on the command-line. | |
133 | * Otherwise, send stdin instead... | |
134 | */ | |
135 | ||
136 | if (argc == 6) | |
137 | { | |
ed486911 | 138 | print_fd = 0; |
139 | copies = 1; | |
ef416fc2 | 140 | } |
141 | else | |
142 | { | |
143 | /* | |
144 | * Try to open the print file... | |
145 | */ | |
146 | ||
ed486911 | 147 | if ((print_fd = open(argv[6], O_RDONLY)) < 0) |
ef416fc2 | 148 | { |
149 | perror("ERROR: unable to open print file"); | |
150 | return (CUPS_BACKEND_FAILED); | |
151 | } | |
152 | ||
153 | copies = atoi(argv[4]); | |
154 | } | |
155 | ||
156 | /* | |
157 | * Extract the device name and options from the URI... | |
158 | */ | |
159 | ||
a4d04587 | 160 | httpSeparateURI(HTTP_URI_CODING_ALL, cupsBackendDeviceURI(argv), |
161 | method, sizeof(method), username, sizeof(username), | |
162 | hostname, sizeof(hostname), &port, | |
ef416fc2 | 163 | resource, sizeof(resource)); |
164 | ||
165 | /* | |
166 | * See if there are any options... | |
167 | */ | |
168 | ||
169 | if ((options = strchr(resource, '?')) != NULL) | |
170 | { | |
171 | /* | |
172 | * Yup, terminate the device name string and move to the first | |
173 | * character of the options... | |
174 | */ | |
175 | ||
176 | *options++ = '\0'; | |
177 | } | |
178 | ||
179 | /* | |
180 | * Open the parallel port device... | |
181 | */ | |
182 | ||
757d2cad | 183 | fputs("STATE: +connecting-to-device\n", stderr); |
184 | ||
ef416fc2 | 185 | do |
186 | { | |
b86bc4cf | 187 | #if defined(__linux) || defined(__FreeBSD__) |
26d47ec6 | 188 | /* |
b86bc4cf | 189 | * The Linux and FreeBSD parallel port drivers currently are broken WRT |
190 | * select() and bidirection I/O... | |
26d47ec6 | 191 | */ |
192 | ||
193 | device_fd = open(resource, O_WRONLY | O_EXCL); | |
194 | use_bc = 0; | |
195 | ||
196 | #else | |
197 | if ((device_fd = open(resource, O_RDWR | O_EXCL)) < 0) | |
198 | { | |
199 | device_fd = open(resource, O_WRONLY | O_EXCL); | |
200 | use_bc = 0; | |
201 | } | |
202 | else | |
203 | use_bc = 1; | |
b86bc4cf | 204 | #endif /* __linux || __FreeBSD__ */ |
26d47ec6 | 205 | |
206 | if (device_fd == -1) | |
ef416fc2 | 207 | { |
208 | if (getenv("CLASS") != NULL) | |
209 | { | |
210 | /* | |
211 | * If the CLASS environment variable is set, the job was submitted | |
212 | * to a class and not to a specific queue. In this case, we want | |
213 | * to abort immediately so that the job can be requeued on the next | |
214 | * available printer in the class. | |
215 | */ | |
216 | ||
db1f069b MS |
217 | _cupsLangPuts(stderr, |
218 | _("INFO: Unable to contact printer, queuing on next " | |
219 | "printer in class...\n")); | |
ef416fc2 | 220 | |
221 | /* | |
222 | * Sleep 5 seconds to keep the job from requeuing too rapidly... | |
223 | */ | |
224 | ||
225 | sleep(5); | |
226 | ||
227 | return (CUPS_BACKEND_FAILED); | |
228 | } | |
229 | ||
230 | if (errno == EBUSY) | |
231 | { | |
db1f069b MS |
232 | _cupsLangPuts(stderr, |
233 | _("INFO: Printer busy; will retry in 30 seconds...\n")); | |
ef416fc2 | 234 | sleep(30); |
235 | } | |
236 | else if (errno == ENXIO || errno == EIO || errno == ENOENT) | |
237 | { | |
db1f069b MS |
238 | _cupsLangPuts(stderr, |
239 | _("INFO: Printer not connected; will retry in 30 " | |
240 | "seconds...\n")); | |
ef416fc2 | 241 | sleep(30); |
242 | } | |
243 | else | |
244 | { | |
db1f069b MS |
245 | _cupsLangPrintf(stderr, |
246 | _("ERROR: Unable to open device file \"%s\": %s\n"), | |
247 | resource, strerror(errno)); | |
ef416fc2 | 248 | return (CUPS_BACKEND_FAILED); |
249 | } | |
250 | } | |
251 | } | |
ed486911 | 252 | while (device_fd < 0); |
ef416fc2 | 253 | |
757d2cad | 254 | fputs("STATE: -connecting-to-device\n", stderr); |
255 | ||
ef416fc2 | 256 | /* |
257 | * Set any options provided... | |
258 | */ | |
259 | ||
ed486911 | 260 | tcgetattr(device_fd, &opts); |
ef416fc2 | 261 | |
262 | opts.c_lflag &= ~(ICANON | ECHO | ISIG); /* Raw mode */ | |
263 | ||
264 | /**** No options supported yet ****/ | |
265 | ||
ed486911 | 266 | tcsetattr(device_fd, TCSANOW, &opts); |
ef416fc2 | 267 | |
ef416fc2 | 268 | /* |
269 | * Finally, send the print file... | |
270 | */ | |
271 | ||
ed486911 | 272 | tbytes = 0; |
ef416fc2 | 273 | |
ed486911 | 274 | while (copies > 0 && tbytes >= 0) |
ef416fc2 | 275 | { |
276 | copies --; | |
277 | ||
ed486911 | 278 | if (print_fd != 0) |
ef416fc2 | 279 | { |
280 | fputs("PAGE: 1 1\n", stderr); | |
ed486911 | 281 | lseek(print_fd, 0, SEEK_SET); |
ef416fc2 | 282 | } |
283 | ||
f7deaa1a | 284 | tbytes = backendRunLoop(print_fd, device_fd, use_bc, side_cb); |
ef416fc2 | 285 | |
ed486911 | 286 | if (print_fd != 0 && tbytes >= 0) |
db1f069b | 287 | _cupsLangPrintf(stderr, |
c0e1af83 | 288 | #ifdef HAVE_LONG_LONG |
db1f069b | 289 | _("INFO: Sent print file, %lld bytes...\n"), |
c0e1af83 | 290 | #else |
db1f069b | 291 | _("INFO: Sent print file, %ld bytes...\n"), |
c0e1af83 | 292 | #endif /* HAVE_LONG_LONG */ |
db1f069b | 293 | CUPS_LLCAST tbytes); |
ef416fc2 | 294 | } |
295 | ||
296 | /* | |
297 | * Close the socket connection and input file and return... | |
298 | */ | |
299 | ||
ed486911 | 300 | close(device_fd); |
301 | ||
302 | if (print_fd != 0) | |
303 | close(print_fd); | |
ef416fc2 | 304 | |
ed486911 | 305 | return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK); |
ef416fc2 | 306 | } |
307 | ||
308 | ||
309 | /* | |
310 | * 'list_devices()' - List all parallel devices. | |
311 | */ | |
312 | ||
f7deaa1a | 313 | static void |
ef416fc2 | 314 | list_devices(void) |
315 | { | |
316 | #if defined(__hpux) || defined(__sgi) || defined(__sun) | |
317 | static char *funky_hex = "0123456789abcdefghijklmnopqrstuvwxyz"; | |
318 | /* Funky hex numbering used for some devices */ | |
319 | #endif /* __hpux || __sgi || __sun */ | |
320 | ||
321 | #ifdef __linux | |
322 | int i; /* Looping var */ | |
323 | int fd; /* File descriptor */ | |
324 | char device[255], /* Device filename */ | |
325 | basedevice[255], /* Base device filename for ports */ | |
326 | device_id[1024], /* Device ID string */ | |
2e4ff8af MS |
327 | make_model[1024], /* Make and model */ |
328 | uri[1024]; /* Device URI */ | |
ef416fc2 | 329 | |
330 | ||
331 | if (!access("/dev/parallel/", 0)) | |
332 | strcpy(basedevice, "/dev/parallel/"); | |
333 | else if (!access("/dev/printers/", 0)) | |
334 | strcpy(basedevice, "/dev/printers/"); | |
ef416fc2 | 335 | else |
336 | strcpy(basedevice, "/dev/lp"); | |
337 | ||
338 | for (i = 0; i < 4; i ++) | |
339 | { | |
340 | /* | |
341 | * Open the port, if available... | |
342 | */ | |
343 | ||
344 | sprintf(device, "%s%d", basedevice, i); | |
345 | if ((fd = open(device, O_RDWR | O_EXCL)) < 0) | |
346 | fd = open(device, O_WRONLY); | |
347 | ||
348 | if (fd >= 0) | |
349 | { | |
350 | /* | |
351 | * Now grab the IEEE 1284 device ID string... | |
352 | */ | |
353 | ||
2e4ff8af MS |
354 | snprintf(uri, sizeof(uri), "parallel:%s", device); |
355 | ||
ed486911 | 356 | if (!backendGetDeviceID(fd, device_id, sizeof(device_id), |
357 | make_model, sizeof(make_model), | |
2e4ff8af MS |
358 | NULL, uri, sizeof(uri))) |
359 | printf("direct %s \"%s\" \"%s LPT #%d\" \"%s\"\n", uri, | |
ef416fc2 | 360 | make_model, make_model, i + 1, device_id); |
361 | else | |
2e4ff8af | 362 | printf("direct %s \"Unknown\" \"LPT #%d\"\n", uri, i + 1); |
ef416fc2 | 363 | |
364 | close(fd); | |
365 | } | |
366 | } | |
367 | #elif defined(__sgi) | |
368 | int i, j, n; /* Looping vars */ | |
369 | char device[255]; /* Device filename */ | |
370 | inventory_t *inv; /* Hardware inventory info */ | |
371 | ||
372 | ||
373 | /* | |
374 | * IRIX maintains a hardware inventory of most devices... | |
375 | */ | |
376 | ||
377 | setinvent(); | |
378 | ||
379 | while ((inv = getinvent()) != NULL) | |
380 | { | |
381 | if (inv->inv_class == INV_PARALLEL && | |
382 | (inv->inv_type == INV_ONBOARD_PLP || | |
383 | inv->inv_type == INV_EPP_ECP_PLP)) | |
384 | { | |
385 | /* | |
386 | * Standard parallel port... | |
387 | */ | |
388 | ||
389 | puts("direct parallel:/dev/plp \"Unknown\" \"Onboard Parallel Port\""); | |
390 | } | |
391 | else if (inv->inv_class == INV_PARALLEL && | |
392 | inv->inv_type == INV_EPC_PLP) | |
393 | { | |
394 | /* | |
395 | * EPC parallel port... | |
396 | */ | |
397 | ||
398 | printf("direct parallel:/dev/plp%d \"Unknown\" \"Integral EPC parallel port, Ebus slot %d\"\n", | |
399 | inv->inv_controller, inv->inv_controller); | |
400 | } | |
401 | } | |
402 | ||
403 | endinvent(); | |
404 | ||
405 | /* | |
406 | * Central Data makes serial and parallel "servers" that can be | |
407 | * connected in a number of ways. Look for ports... | |
408 | */ | |
409 | ||
410 | for (i = 0; i < 10; i ++) | |
411 | for (j = 0; j < 8; j ++) | |
412 | for (n = 0; n < 32; n ++) | |
413 | { | |
414 | if (i == 8) /* EtherLite */ | |
415 | sprintf(device, "/dev/lpn%d%c", j, funky_hex[n]); | |
416 | else if (i == 9) /* PCI */ | |
417 | sprintf(device, "/dev/lpp%d%c", j, funky_hex[n]); | |
418 | else /* SCSI */ | |
419 | sprintf(device, "/dev/lp%d%d%c", i, j, funky_hex[n]); | |
420 | ||
421 | if (access(device, 0) == 0) | |
422 | { | |
423 | if (i == 8) | |
424 | printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n", | |
425 | device, j, n); | |
426 | else if (i == 9) | |
427 | printf("direct parallel:%s \"Unknown\" \"Central Data PCI Parallel Port, ID %d, port %d\"\n", | |
428 | device, j, n); | |
429 | else | |
430 | printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n", | |
431 | device, i, j, n); | |
432 | } | |
433 | } | |
434 | #elif defined(__sun) | |
435 | int i, j, n; /* Looping vars */ | |
436 | char device[255]; /* Device filename */ | |
437 | ||
438 | ||
439 | /* | |
440 | * Standard parallel ports... | |
441 | */ | |
442 | ||
443 | for (i = 0; i < 10; i ++) | |
444 | { | |
445 | sprintf(device, "/dev/ecpp%d", i); | |
446 | if (access(device, 0) == 0) | |
447 | printf("direct parallel:%s \"Unknown\" \"Sun IEEE-1284 Parallel Port #%d\"\n", | |
448 | device, i + 1); | |
449 | } | |
450 | ||
451 | for (i = 0; i < 10; i ++) | |
452 | { | |
453 | sprintf(device, "/dev/bpp%d", i); | |
454 | if (access(device, 0) == 0) | |
455 | printf("direct parallel:%s \"Unknown\" \"Sun Standard Parallel Port #%d\"\n", | |
456 | device, i + 1); | |
457 | } | |
458 | ||
459 | for (i = 0; i < 3; i ++) | |
460 | { | |
461 | sprintf(device, "/dev/lp%d", i); | |
462 | ||
463 | if (access(device, 0) == 0) | |
464 | printf("direct parallel:%s \"Unknown\" \"PC Parallel Port #%d\"\n", | |
465 | device, i + 1); | |
466 | } | |
467 | ||
468 | /* | |
469 | * MAGMA parallel ports... | |
470 | */ | |
471 | ||
472 | for (i = 0; i < 40; i ++) | |
473 | { | |
474 | sprintf(device, "/dev/pm%02d", i); | |
475 | if (access(device, 0) == 0) | |
476 | printf("direct parallel:%s \"Unknown\" \"MAGMA Parallel Board #%d Port #%d\"\n", | |
477 | device, (i / 10) + 1, (i % 10) + 1); | |
478 | } | |
479 | ||
480 | /* | |
481 | * Central Data parallel ports... | |
482 | */ | |
483 | ||
484 | for (i = 0; i < 9; i ++) | |
485 | for (j = 0; j < 8; j ++) | |
486 | for (n = 0; n < 32; n ++) | |
487 | { | |
488 | if (i == 8) /* EtherLite */ | |
489 | sprintf(device, "/dev/sts/lpN%d%c", j, funky_hex[n]); | |
490 | else | |
491 | sprintf(device, "/dev/sts/lp%c%d%c", i + 'C', j, | |
492 | funky_hex[n]); | |
493 | ||
494 | if (access(device, 0) == 0) | |
495 | { | |
496 | if (i == 8) | |
497 | printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n", | |
498 | device, j, n); | |
499 | else | |
500 | printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n", | |
501 | device, i, j, n); | |
502 | } | |
503 | } | |
504 | #elif defined(__hpux) | |
505 | int i, j, n; /* Looping vars */ | |
506 | char device[255]; /* Device filename */ | |
507 | ||
508 | ||
509 | /* | |
510 | * Standard parallel ports... | |
511 | */ | |
512 | ||
513 | if (access("/dev/rlp", 0) == 0) | |
514 | puts("direct parallel:/dev/rlp \"Unknown\" \"Standard Parallel Port (/dev/rlp)\""); | |
515 | ||
516 | for (i = 0; i < 7; i ++) | |
517 | for (j = 0; j < 7; j ++) | |
518 | { | |
519 | sprintf(device, "/dev/c%dt%dd0_lp", i, j); | |
520 | if (access(device, 0) == 0) | |
521 | printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d,%d\"\n", | |
522 | device, i, j); | |
523 | } | |
524 | ||
525 | /* | |
526 | * Central Data parallel ports... | |
527 | */ | |
528 | ||
529 | for (i = 0; i < 9; i ++) | |
530 | for (j = 0; j < 8; j ++) | |
531 | for (n = 0; n < 32; n ++) | |
532 | { | |
533 | if (i == 8) /* EtherLite */ | |
534 | sprintf(device, "/dev/lpN%d%c", j, funky_hex[n]); | |
535 | else | |
536 | sprintf(device, "/dev/lp%c%d%c", i + 'C', j, | |
537 | funky_hex[n]); | |
538 | ||
539 | if (access(device, 0) == 0) | |
540 | { | |
541 | if (i == 8) | |
542 | printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n", | |
543 | device, j, n); | |
544 | else | |
545 | printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n", | |
546 | device, i, j, n); | |
547 | } | |
548 | } | |
549 | #elif defined(__osf__) | |
550 | int i; /* Looping var */ | |
551 | int fd; /* File descriptor */ | |
552 | char device[255]; /* Device filename */ | |
553 | ||
554 | ||
555 | for (i = 0; i < 3; i ++) | |
556 | { | |
557 | sprintf(device, "/dev/lp%d", i); | |
558 | if ((fd = open(device, O_WRONLY)) >= 0) | |
559 | { | |
560 | close(fd); | |
561 | printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d\"\n", device, i + 1); | |
562 | } | |
563 | } | |
2e4ff8af | 564 | #elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) |
ef416fc2 | 565 | int i; /* Looping var */ |
566 | int fd; /* File descriptor */ | |
567 | char device[255]; /* Device filename */ | |
568 | ||
569 | ||
570 | for (i = 0; i < 3; i ++) | |
571 | { | |
572 | sprintf(device, "/dev/lpt%d", i); | |
573 | if ((fd = open(device, O_WRONLY)) >= 0) | |
574 | { | |
575 | close(fd); | |
576 | printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d (interrupt-driven)\"\n", device, i + 1); | |
577 | } | |
578 | ||
579 | sprintf(device, "/dev/lpa%d", i); | |
580 | if ((fd = open(device, O_WRONLY)) >= 0) | |
581 | { | |
582 | close(fd); | |
583 | printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d (polled)\"\n", device, i + 1); | |
584 | } | |
585 | } | |
586 | #elif defined(_AIX) | |
587 | int i; /* Looping var */ | |
588 | int fd; /* File descriptor */ | |
589 | char device[255]; /* Device filename */ | |
590 | ||
591 | ||
592 | for (i = 0; i < 8; i ++) | |
593 | { | |
594 | sprintf(device, "/dev/lp%d", i); | |
595 | if ((fd = open(device, O_WRONLY)) >= 0) | |
596 | { | |
597 | close(fd); | |
598 | printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d\"\n", device, i + 1); | |
599 | } | |
600 | } | |
601 | #endif | |
602 | } | |
603 | ||
604 | ||
605 | /* | |
f7deaa1a | 606 | * 'side_cb()' - Handle side-channel requests... |
607 | */ | |
608 | ||
609 | static void | |
610 | side_cb(int print_fd, /* I - Print file */ | |
611 | int device_fd, /* I - Device file */ | |
612 | int use_bc) /* I - Using back-channel? */ | |
613 | { | |
614 | cups_sc_command_t command; /* Request command */ | |
615 | cups_sc_status_t status; /* Request/response status */ | |
616 | char data[2048]; /* Request/response data */ | |
617 | int datalen; /* Request/response data size */ | |
618 | ||
619 | ||
620 | datalen = sizeof(data); | |
621 | ||
622 | if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0)) | |
623 | { | |
db1f069b | 624 | _cupsLangPuts(stderr, _("WARNING: Failed to read side-channel request!\n")); |
f7deaa1a | 625 | return; |
626 | } | |
627 | ||
628 | switch (command) | |
629 | { | |
630 | case CUPS_SC_CMD_DRAIN_OUTPUT : | |
09a101d6 | 631 | if (backendDrainOutput(print_fd, device_fd)) |
632 | status = CUPS_SC_STATUS_IO_ERROR; | |
633 | else if (tcdrain(device_fd)) | |
f7deaa1a | 634 | status = CUPS_SC_STATUS_IO_ERROR; |
635 | else | |
636 | status = CUPS_SC_STATUS_OK; | |
637 | ||
638 | datalen = 0; | |
639 | break; | |
640 | ||
641 | case CUPS_SC_CMD_GET_BIDI : | |
642 | data[0] = use_bc; | |
643 | datalen = 1; | |
644 | break; | |
645 | ||
646 | case CUPS_SC_CMD_GET_DEVICE_ID : | |
647 | memset(data, 0, sizeof(data)); | |
648 | ||
649 | if (backendGetDeviceID(device_fd, data, sizeof(data) - 1, | |
650 | NULL, 0, NULL, NULL, 0)) | |
651 | { | |
652 | status = CUPS_SC_STATUS_NOT_IMPLEMENTED; | |
653 | datalen = 0; | |
654 | } | |
655 | else | |
656 | { | |
657 | status = CUPS_SC_STATUS_OK; | |
658 | datalen = strlen(data); | |
659 | } | |
660 | break; | |
661 | ||
662 | default : | |
663 | status = CUPS_SC_STATUS_NOT_IMPLEMENTED; | |
664 | datalen = 0; | |
665 | break; | |
666 | } | |
667 | ||
668 | cupsSideChannelWrite(command, status, data, datalen, 1.0); | |
669 | } | |
670 | ||
671 | ||
672 | /* | |
2e4ff8af | 673 | * End of "$Id: parallel.c 7019 2007-10-10 22:48:52Z mike $". |
ef416fc2 | 674 | */ |