2 * "$Id: parallel.c 7343 2008-02-25 19:02:09Z mike $"
4 * Parallel port backend for the Common UNIX Printing System (CUPS).
6 * Copyright 2007-2008 by Apple Inc.
7 * Copyright 1997-2007 by Easy Software Products, all rights reserved.
9 * These coded instructions, statements, and computer programs are the
10 * property of Apple Inc. and are protected by Federal copyright
11 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
12 * "LICENSE" which should have been included with this file. If this
13 * file is missing or damaged, see the license at "http://www.cups.org/".
15 * This file is subject to the Apple OS-Developed Software exception.
19 * main() - Send a file to the specified parallel port.
20 * list_devices() - List all parallel devices.
21 * side_cb() - Handle side-channel requests...
25 * Include necessary headers.
28 #include "backend-private.h"
31 # include <sys/time.h>
33 # include <sys/select.h>
42 # include <sys/socket.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 */
61 static void list_devices(void);
62 static void side_cb(int print_fd
, int device_fd
, int snmp_fd
,
63 http_addr_t
*addr
, int use_bc
);
67 * 'main()' - Send a file to the specified parallel port.
71 * printer-uri job-id user title copies options [file]
74 int /* O - Exit status */
75 main(int argc
, /* I - Number of command-line arguments (6 or 7) */
76 char *argv
[]) /* I - Command-line arguments */
78 char method
[255], /* Method in URI */
79 hostname
[1024], /* Hostname */
80 username
[255], /* Username info (not used) */
81 resource
[1024], /* Resource info (device and options) */
82 *options
; /* Pointer to options */
83 int port
; /* Port number (not used) */
84 int print_fd
, /* Print file */
85 device_fd
, /* Parallel device */
86 use_bc
; /* Read back-channel data? */
87 int copies
; /* Number of copies to print */
88 size_t tbytes
; /* Total number of bytes written */
89 struct termios opts
; /* Parallel port options */
90 #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
91 struct sigaction action
; /* Actions for POSIX signals */
92 #endif /* HAVE_SIGACTION && !HAVE_SIGSET */
96 * Make sure status messages are not buffered...
102 * Ignore SIGPIPE signals...
106 sigset(SIGPIPE
, SIG_IGN
);
107 #elif defined(HAVE_SIGACTION)
108 memset(&action
, 0, sizeof(action
));
109 action
.sa_handler
= SIG_IGN
;
110 sigaction(SIGPIPE
, &action
, NULL
);
112 signal(SIGPIPE
, SIG_IGN
);
113 #endif /* HAVE_SIGSET */
116 * Check command-line...
122 return (CUPS_BACKEND_OK
);
124 else if (argc
< 6 || argc
> 7)
126 _cupsLangPrintf(stderr
,
127 _("Usage: %s job-id user title copies options [file]\n"),
129 return (CUPS_BACKEND_FAILED
);
133 * If we have 7 arguments, print the file named on the command-line.
134 * Otherwise, send stdin instead...
145 * Try to open the print file...
148 if ((print_fd
= open(argv
[6], O_RDONLY
)) < 0)
150 _cupsLangPrintf(stderr
,
151 _("ERROR: Unable to open print file \"%s\": %s\n"),
152 argv
[6], strerror(errno
));
153 return (CUPS_BACKEND_FAILED
);
156 copies
= atoi(argv
[4]);
160 * Extract the device name and options from the URI...
163 httpSeparateURI(HTTP_URI_CODING_ALL
, cupsBackendDeviceURI(argv
),
164 method
, sizeof(method
), username
, sizeof(username
),
165 hostname
, sizeof(hostname
), &port
,
166 resource
, sizeof(resource
));
169 * See if there are any options...
172 if ((options
= strchr(resource
, '?')) != NULL
)
175 * Yup, terminate the device name string and move to the first
176 * character of the options...
183 * Open the parallel port device...
186 fputs("STATE: +connecting-to-device\n", stderr
);
190 #if defined(__linux) || defined(__FreeBSD__)
192 * The Linux and FreeBSD parallel port drivers currently are broken WRT
193 * select() and bidirection I/O...
196 device_fd
= open(resource
, O_WRONLY
| O_EXCL
);
200 if ((device_fd
= open(resource
, O_RDWR
| O_EXCL
)) < 0)
202 device_fd
= open(resource
, O_WRONLY
| O_EXCL
);
207 #endif /* __linux || __FreeBSD__ */
211 if (getenv("CLASS") != NULL
)
214 * If the CLASS environment variable is set, the job was submitted
215 * to a class and not to a specific queue. In this case, we want
216 * to abort immediately so that the job can be requeued on the next
217 * available printer in the class.
220 _cupsLangPuts(stderr
,
221 _("INFO: Unable to contact printer, queuing on next "
222 "printer in class...\n"));
225 * Sleep 5 seconds to keep the job from requeuing too rapidly...
230 return (CUPS_BACKEND_FAILED
);
235 _cupsLangPuts(stderr
,
236 _("INFO: Printer busy; will retry in 30 seconds...\n"));
239 else if (errno
== ENXIO
|| errno
== EIO
|| errno
== ENOENT
)
241 _cupsLangPuts(stderr
,
242 _("INFO: Printer not connected; will retry in 30 "
248 _cupsLangPrintf(stderr
,
249 _("ERROR: Unable to open device file \"%s\": %s\n"),
250 resource
, strerror(errno
));
251 return (CUPS_BACKEND_FAILED
);
255 while (device_fd
< 0);
257 fputs("STATE: -connecting-to-device\n", stderr
);
260 * Set any options provided...
263 tcgetattr(device_fd
, &opts
);
265 opts
.c_lflag
&= ~(ICANON
| ECHO
| ISIG
); /* Raw mode */
267 /**** No options supported yet ****/
269 tcsetattr(device_fd
, TCSANOW
, &opts
);
272 * Finally, send the print file...
277 while (copies
> 0 && tbytes
>= 0)
283 fputs("PAGE: 1 1\n", stderr
);
284 lseek(print_fd
, 0, SEEK_SET
);
287 tbytes
= backendRunLoop(print_fd
, device_fd
, -1, NULL
, use_bc
, side_cb
);
289 if (print_fd
!= 0 && tbytes
>= 0)
290 _cupsLangPrintf(stderr
,
291 #ifdef HAVE_LONG_LONG
292 _("INFO: Sent print file, %lld bytes...\n"),
294 _("INFO: Sent print file, %ld bytes...\n"),
295 #endif /* HAVE_LONG_LONG */
300 * Close the socket connection and input file and return...
308 return (tbytes
< 0 ? CUPS_BACKEND_FAILED
: CUPS_BACKEND_OK
);
313 * 'list_devices()' - List all parallel devices.
319 #if defined(__hpux) || defined(__sgi) || defined(__sun)
320 static char *funky_hex
= "0123456789abcdefghijklmnopqrstuvwxyz";
321 /* Funky hex numbering used for some devices */
322 #endif /* __hpux || __sgi || __sun */
325 int i
; /* Looping var */
326 int fd
; /* File descriptor */
327 char device
[255], /* Device filename */
328 basedevice
[255], /* Base device filename for ports */
329 device_id
[1024], /* Device ID string */
330 make_model
[1024], /* Make and model */
331 uri
[1024]; /* Device URI */
334 if (!access("/dev/parallel/", 0))
335 strcpy(basedevice
, "/dev/parallel/");
336 else if (!access("/dev/printers/", 0))
337 strcpy(basedevice
, "/dev/printers/");
339 strcpy(basedevice
, "/dev/lp");
341 for (i
= 0; i
< 4; i
++)
344 * Open the port, if available...
347 sprintf(device
, "%s%d", basedevice
, i
);
348 if ((fd
= open(device
, O_RDWR
| O_EXCL
)) < 0)
349 fd
= open(device
, O_WRONLY
);
354 * Now grab the IEEE 1284 device ID string...
357 snprintf(uri
, sizeof(uri
), "parallel:%s", device
);
359 if (!backendGetDeviceID(fd
, device_id
, sizeof(device_id
),
360 make_model
, sizeof(make_model
),
361 NULL
, uri
, sizeof(uri
)))
362 printf("direct %s \"%s\" \"%s LPT #%d\" \"%s\"\n", uri
,
363 make_model
, make_model
, i
+ 1, device_id
);
365 printf("direct %s \"Unknown\" \"LPT #%d\"\n", uri
, i
+ 1);
371 int i
, j
, n
; /* Looping vars */
372 char device
[255]; /* Device filename */
373 inventory_t
*inv
; /* Hardware inventory info */
377 * IRIX maintains a hardware inventory of most devices...
382 while ((inv
= getinvent()) != NULL
)
384 if (inv
->inv_class
== INV_PARALLEL
&&
385 (inv
->inv_type
== INV_ONBOARD_PLP
||
386 inv
->inv_type
== INV_EPP_ECP_PLP
))
389 * Standard parallel port...
392 puts("direct parallel:/dev/plp \"Unknown\" \"Onboard Parallel Port\"");
394 else if (inv
->inv_class
== INV_PARALLEL
&&
395 inv
->inv_type
== INV_EPC_PLP
)
398 * EPC parallel port...
401 printf("direct parallel:/dev/plp%d \"Unknown\" \"Integral EPC parallel port, Ebus slot %d\"\n",
402 inv
->inv_controller
, inv
->inv_controller
);
409 * Central Data makes serial and parallel "servers" that can be
410 * connected in a number of ways. Look for ports...
413 for (i
= 0; i
< 10; i
++)
414 for (j
= 0; j
< 8; j
++)
415 for (n
= 0; n
< 32; n
++)
417 if (i
== 8) /* EtherLite */
418 sprintf(device
, "/dev/lpn%d%c", j
, funky_hex
[n
]);
419 else if (i
== 9) /* PCI */
420 sprintf(device
, "/dev/lpp%d%c", j
, funky_hex
[n
]);
422 sprintf(device
, "/dev/lp%d%d%c", i
, j
, funky_hex
[n
]);
424 if (access(device
, 0) == 0)
427 printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n",
430 printf("direct parallel:%s \"Unknown\" \"Central Data PCI Parallel Port, ID %d, port %d\"\n",
433 printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n",
438 int i
, j
, n
; /* Looping vars */
439 char device
[255]; /* Device filename */
443 * Standard parallel ports...
446 for (i
= 0; i
< 10; i
++)
448 sprintf(device
, "/dev/ecpp%d", i
);
449 if (access(device
, 0) == 0)
450 printf("direct parallel:%s \"Unknown\" \"Sun IEEE-1284 Parallel Port #%d\"\n",
454 for (i
= 0; i
< 10; i
++)
456 sprintf(device
, "/dev/bpp%d", i
);
457 if (access(device
, 0) == 0)
458 printf("direct parallel:%s \"Unknown\" \"Sun Standard Parallel Port #%d\"\n",
462 for (i
= 0; i
< 3; i
++)
464 sprintf(device
, "/dev/lp%d", i
);
466 if (access(device
, 0) == 0)
467 printf("direct parallel:%s \"Unknown\" \"PC Parallel Port #%d\"\n",
472 * MAGMA parallel ports...
475 for (i
= 0; i
< 40; i
++)
477 sprintf(device
, "/dev/pm%02d", i
);
478 if (access(device
, 0) == 0)
479 printf("direct parallel:%s \"Unknown\" \"MAGMA Parallel Board #%d Port #%d\"\n",
480 device
, (i
/ 10) + 1, (i
% 10) + 1);
484 * Central Data parallel ports...
487 for (i
= 0; i
< 9; i
++)
488 for (j
= 0; j
< 8; j
++)
489 for (n
= 0; n
< 32; n
++)
491 if (i
== 8) /* EtherLite */
492 sprintf(device
, "/dev/sts/lpN%d%c", j
, funky_hex
[n
]);
494 sprintf(device
, "/dev/sts/lp%c%d%c", i
+ 'C', j
,
497 if (access(device
, 0) == 0)
500 printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n",
503 printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n",
507 #elif defined(__hpux)
508 int i
, j
, n
; /* Looping vars */
509 char device
[255]; /* Device filename */
513 * Standard parallel ports...
516 if (access("/dev/rlp", 0) == 0)
517 puts("direct parallel:/dev/rlp \"Unknown\" \"Standard Parallel Port (/dev/rlp)\"");
519 for (i
= 0; i
< 7; i
++)
520 for (j
= 0; j
< 7; j
++)
522 sprintf(device
, "/dev/c%dt%dd0_lp", i
, j
);
523 if (access(device
, 0) == 0)
524 printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d,%d\"\n",
529 * Central Data parallel ports...
532 for (i
= 0; i
< 9; i
++)
533 for (j
= 0; j
< 8; j
++)
534 for (n
= 0; n
< 32; n
++)
536 if (i
== 8) /* EtherLite */
537 sprintf(device
, "/dev/lpN%d%c", j
, funky_hex
[n
]);
539 sprintf(device
, "/dev/lp%c%d%c", i
+ 'C', j
,
542 if (access(device
, 0) == 0)
545 printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n",
548 printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n",
552 #elif defined(__osf__)
553 int i
; /* Looping var */
554 int fd
; /* File descriptor */
555 char device
[255]; /* Device filename */
558 for (i
= 0; i
< 3; i
++)
560 sprintf(device
, "/dev/lp%d", i
);
561 if ((fd
= open(device
, O_WRONLY
)) >= 0)
564 printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d\"\n", device
, i
+ 1);
567 #elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
568 int i
; /* Looping var */
569 int fd
; /* File descriptor */
570 char device
[255]; /* Device filename */
573 for (i
= 0; i
< 3; i
++)
575 sprintf(device
, "/dev/lpt%d", i
);
576 if ((fd
= open(device
, O_WRONLY
)) >= 0)
579 printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d (interrupt-driven)\"\n", device
, i
+ 1);
582 sprintf(device
, "/dev/lpa%d", i
);
583 if ((fd
= open(device
, O_WRONLY
)) >= 0)
586 printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d (polled)\"\n", device
, i
+ 1);
590 int i
; /* Looping var */
591 int fd
; /* File descriptor */
592 char device
[255]; /* Device filename */
595 for (i
= 0; i
< 8; i
++)
597 sprintf(device
, "/dev/lp%d", i
);
598 if ((fd
= open(device
, O_WRONLY
)) >= 0)
601 printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d\"\n", device
, i
+ 1);
609 * 'side_cb()' - Handle side-channel requests...
613 side_cb(int print_fd
, /* I - Print file */
614 int device_fd
, /* I - Device file */
615 int snmp_fd
, /* I - SNMP socket (unused) */
616 http_addr_t
*addr
, /* I - Device address (unused) */
617 int use_bc
) /* I - Using back-channel? */
619 cups_sc_command_t command
; /* Request command */
620 cups_sc_status_t status
; /* Request/response status */
621 char data
[2048]; /* Request/response data */
622 int datalen
; /* Request/response data size */
628 datalen
= sizeof(data
);
630 if (cupsSideChannelRead(&command
, &status
, data
, &datalen
, 1.0))
632 _cupsLangPuts(stderr
, _("WARNING: Failed to read side-channel request!\n"));
638 case CUPS_SC_CMD_DRAIN_OUTPUT
:
639 if (backendDrainOutput(print_fd
, device_fd
))
640 status
= CUPS_SC_STATUS_IO_ERROR
;
641 else if (tcdrain(device_fd
))
642 status
= CUPS_SC_STATUS_IO_ERROR
;
644 status
= CUPS_SC_STATUS_OK
;
649 case CUPS_SC_CMD_GET_BIDI
:
654 case CUPS_SC_CMD_GET_DEVICE_ID
:
655 memset(data
, 0, sizeof(data
));
657 if (backendGetDeviceID(device_fd
, data
, sizeof(data
) - 1,
658 NULL
, 0, NULL
, NULL
, 0))
660 status
= CUPS_SC_STATUS_NOT_IMPLEMENTED
;
665 status
= CUPS_SC_STATUS_OK
;
666 datalen
= strlen(data
);
671 status
= CUPS_SC_STATUS_NOT_IMPLEMENTED
;
676 cupsSideChannelWrite(command
, status
, data
, datalen
, 1.0);
681 * End of "$Id: parallel.c 7343 2008-02-25 19:02:09Z mike $".