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/*
* "$Id: parallel.c 6178 2007-01-03 18:09:17Z mike $"
*
* Parallel port backend for the Common UNIX Printing System (CUPS).
*
* Copyright 1997-2007 by Easy Software Products, all rights reserved.
*
* These coded instructions, statements, and computer programs are the
* property of Easy Software Products and are protected by Federal
* copyright law. Distribution and use rights are outlined in the file
* "LICENSE" which should have been included with this file. If this
* file is missing or damaged please contact Easy Software Products
* at:
*
* Attn: CUPS Licensing Information
* Easy Software Products
* 44141 Airport View Drive, Suite 204
* Hollywood, Maryland 20636 USA
*
* Voice: (301) 373-9600
* EMail: cups-info@cups.org
* WWW: http://www.cups.org
*
* This file is subject to the Apple OS-Developed Software exception.
*
* Contents:
*
* main() - Send a file to the specified parallel port.
* list_devices() - List all parallel devices.
* side_cb() - Handle side-channel requests...
*/
/*
* Include necessary headers.
*/
#include "backend-private.h"
#ifdef __hpux
# include <sys/time.h>
#else
# include <sys/select.h>
#endif /* __hpux */
#ifdef WIN32
# include <io.h>
#else
# include <unistd.h>
# include <fcntl.h>
# include <termios.h>
# include <sys/socket.h>
#endif /* WIN32 */
#ifdef __sgi
# include <invent.h>
# ifndef INV_EPP_ECP_PLP
# define INV_EPP_ECP_PLP 6 /* From 6.3/6.4/6.5 sys/invent.h */
# define INV_ASO_SERIAL 14 /* serial portion of SGI ASO board */
# define INV_IOC3_DMA 16 /* DMA mode IOC3 serial */
# define INV_IOC3_PIO 17 /* PIO mode IOC3 serial */
# define INV_ISA_DMA 19 /* DMA mode ISA serial -- O2 */
# endif /* !INV_EPP_ECP_PLP */
#endif /* __sgi */
/*
* Local functions...
*/
static void list_devices(void);
static void side_cb(int print_fd, int device_fd, int use_bc);
/*
* 'main()' - Send a file to the specified parallel port.
*
* Usage:
*
* printer-uri job-id user title copies options [file]
*/
int /* O - Exit status */
main(int argc, /* I - Number of command-line arguments (6 or 7) */
char *argv[]) /* I - Command-line arguments */
{
char method[255], /* Method in URI */
hostname[1024], /* Hostname */
username[255], /* Username info (not used) */
resource[1024], /* Resource info (device and options) */
*options; /* Pointer to options */
int port; /* Port number (not used) */
int print_fd, /* Print file */
device_fd, /* Parallel device */
use_bc; /* Read back-channel data? */
int copies; /* Number of copies to print */
size_t tbytes; /* Total number of bytes written */
struct termios opts; /* Parallel port options */
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
struct sigaction action; /* Actions for POSIX signals */
#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
/*
* Make sure status messages are not buffered...
*/
setbuf(stderr, NULL);
/*
* Ignore SIGPIPE signals...
*/
#ifdef HAVE_SIGSET
sigset(SIGPIPE, SIG_IGN);
#elif defined(HAVE_SIGACTION)
memset(&action, 0, sizeof(action));
action.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &action, NULL);
#else
signal(SIGPIPE, SIG_IGN);
#endif /* HAVE_SIGSET */
/*
* Check command-line...
*/
if (argc == 1)
{
list_devices();
return (CUPS_BACKEND_OK);
}
else if (argc < 6 || argc > 7)
{
fputs("Usage: parallel job-id user title copies options [file]\n", stderr);
return (CUPS_BACKEND_FAILED);
}
/*
* If we have 7 arguments, print the file named on the command-line.
* Otherwise, send stdin instead...
*/
if (argc == 6)
{
print_fd = 0;
copies = 1;
}
else
{
/*
* Try to open the print file...
*/
if ((print_fd = open(argv[6], O_RDONLY)) < 0)
{
perror("ERROR: unable to open print file");
return (CUPS_BACKEND_FAILED);
}
copies = atoi(argv[4]);
}
/*
* Extract the device name and options from the URI...
*/
httpSeparateURI(HTTP_URI_CODING_ALL, cupsBackendDeviceURI(argv),
method, sizeof(method), username, sizeof(username),
hostname, sizeof(hostname), &port,
resource, sizeof(resource));
/*
* See if there are any options...
*/
if ((options = strchr(resource, '?')) != NULL)
{
/*
* Yup, terminate the device name string and move to the first
* character of the options...
*/
*options++ = '\0';
}
/*
* Open the parallel port device...
*/
fputs("STATE: +connecting-to-device\n", stderr);
do
{
#if defined(__linux) || defined(__FreeBSD__)
/*
* The Linux and FreeBSD parallel port drivers currently are broken WRT
* select() and bidirection I/O...
*/
device_fd = open(resource, O_WRONLY | O_EXCL);
use_bc = 0;
#else
if ((device_fd = open(resource, O_RDWR | O_EXCL)) < 0)
{
device_fd = open(resource, O_WRONLY | O_EXCL);
use_bc = 0;
}
else
use_bc = 1;
#endif /* __linux || __FreeBSD__ */
if (device_fd == -1)
{
if (getenv("CLASS") != NULL)
{
/*
* If the CLASS environment variable is set, the job was submitted
* to a class and not to a specific queue. In this case, we want
* to abort immediately so that the job can be requeued on the next
* available printer in the class.
*/
fputs("INFO: Unable to open parallel port, queuing on next printer "
"in class...\n", stderr);
/*
* Sleep 5 seconds to keep the job from requeuing too rapidly...
*/
sleep(5);
return (CUPS_BACKEND_FAILED);
}
if (errno == EBUSY)
{
fputs("INFO: Parallel port busy; will retry in 30 seconds...\n",
stderr);
sleep(30);
}
else if (errno == ENXIO || errno == EIO || errno == ENOENT)
{
fputs("INFO: Printer not connected; will retry in 30 seconds...\n",
stderr);
sleep(30);
}
else
{
fprintf(stderr,
"ERROR: Unable to open parallel port device file \"%s\": %s\n",
resource, strerror(errno));
return (CUPS_BACKEND_FAILED);
}
}
}
while (device_fd < 0);
fputs("STATE: -connecting-to-device\n", stderr);
/*
* Set any options provided...
*/
tcgetattr(device_fd, &opts);
opts.c_lflag &= ~(ICANON | ECHO | ISIG); /* Raw mode */
/**** No options supported yet ****/
tcsetattr(device_fd, TCSANOW, &opts);
/*
* Finally, send the print file...
*/
tbytes = 0;
while (copies > 0 && tbytes >= 0)
{
copies --;
if (print_fd != 0)
{
fputs("PAGE: 1 1\n", stderr);
lseek(print_fd, 0, SEEK_SET);
}
tbytes = backendRunLoop(print_fd, device_fd, use_bc, side_cb);
if (print_fd != 0 && tbytes >= 0)
fprintf(stderr, "INFO: Sent print file, " CUPS_LLFMT " bytes...\n",
CUPS_LLCAST tbytes);
}
/*
* Close the socket connection and input file and return...
*/
close(device_fd);
if (print_fd != 0)
close(print_fd);
return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
}
/*
* 'list_devices()' - List all parallel devices.
*/
static void
list_devices(void)
{
#if defined(__hpux) || defined(__sgi) || defined(__sun)
static char *funky_hex = "0123456789abcdefghijklmnopqrstuvwxyz";
/* Funky hex numbering used for some devices */
#endif /* __hpux || __sgi || __sun */
#ifdef __linux
int i; /* Looping var */
int fd; /* File descriptor */
char device[255], /* Device filename */
basedevice[255], /* Base device filename for ports */
device_id[1024], /* Device ID string */
make_model[1024]; /* Make and model */
if (!access("/dev/parallel/", 0))
strcpy(basedevice, "/dev/parallel/");
else if (!access("/dev/printers/", 0))
strcpy(basedevice, "/dev/printers/");
else
strcpy(basedevice, "/dev/lp");
for (i = 0; i < 4; i ++)
{
/*
* Open the port, if available...
*/
sprintf(device, "%s%d", basedevice, i);
if ((fd = open(device, O_RDWR | O_EXCL)) < 0)
fd = open(device, O_WRONLY);
if (fd >= 0)
{
/*
* Now grab the IEEE 1284 device ID string...
*/
if (!backendGetDeviceID(fd, device_id, sizeof(device_id),
make_model, sizeof(make_model),
NULL, NULL, 0))
printf("direct parallel:%s \"%s\" \"%s LPT #%d\" \"%s\"\n", device,
make_model, make_model, i + 1, device_id);
else
printf("direct parallel:%s \"Unknown\" \"LPT #%d\"\n", device, i + 1);
close(fd);
}
}
#elif defined(__sgi)
int i, j, n; /* Looping vars */
char device[255]; /* Device filename */
inventory_t *inv; /* Hardware inventory info */
/*
* IRIX maintains a hardware inventory of most devices...
*/
setinvent();
while ((inv = getinvent()) != NULL)
{
if (inv->inv_class == INV_PARALLEL &&
(inv->inv_type == INV_ONBOARD_PLP ||
inv->inv_type == INV_EPP_ECP_PLP))
{
/*
* Standard parallel port...
*/
puts("direct parallel:/dev/plp \"Unknown\" \"Onboard Parallel Port\"");
}
else if (inv->inv_class == INV_PARALLEL &&
inv->inv_type == INV_EPC_PLP)
{
/*
* EPC parallel port...
*/
printf("direct parallel:/dev/plp%d \"Unknown\" \"Integral EPC parallel port, Ebus slot %d\"\n",
inv->inv_controller, inv->inv_controller);
}
}
endinvent();
/*
* Central Data makes serial and parallel "servers" that can be
* connected in a number of ways. Look for ports...
*/
for (i = 0; i < 10; i ++)
for (j = 0; j < 8; j ++)
for (n = 0; n < 32; n ++)
{
if (i == 8) /* EtherLite */
sprintf(device, "/dev/lpn%d%c", j, funky_hex[n]);
else if (i == 9) /* PCI */
sprintf(device, "/dev/lpp%d%c", j, funky_hex[n]);
else /* SCSI */
sprintf(device, "/dev/lp%d%d%c", i, j, funky_hex[n]);
if (access(device, 0) == 0)
{
if (i == 8)
printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n",
device, j, n);
else if (i == 9)
printf("direct parallel:%s \"Unknown\" \"Central Data PCI Parallel Port, ID %d, port %d\"\n",
device, j, n);
else
printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n",
device, i, j, n);
}
}
#elif defined(__sun)
int i, j, n; /* Looping vars */
char device[255]; /* Device filename */
/*
* Standard parallel ports...
*/
for (i = 0; i < 10; i ++)
{
sprintf(device, "/dev/ecpp%d", i);
if (access(device, 0) == 0)
printf("direct parallel:%s \"Unknown\" \"Sun IEEE-1284 Parallel Port #%d\"\n",
device, i + 1);
}
for (i = 0; i < 10; i ++)
{
sprintf(device, "/dev/bpp%d", i);
if (access(device, 0) == 0)
printf("direct parallel:%s \"Unknown\" \"Sun Standard Parallel Port #%d\"\n",
device, i + 1);
}
for (i = 0; i < 3; i ++)
{
sprintf(device, "/dev/lp%d", i);
if (access(device, 0) == 0)
printf("direct parallel:%s \"Unknown\" \"PC Parallel Port #%d\"\n",
device, i + 1);
}
/*
* MAGMA parallel ports...
*/
for (i = 0; i < 40; i ++)
{
sprintf(device, "/dev/pm%02d", i);
if (access(device, 0) == 0)
printf("direct parallel:%s \"Unknown\" \"MAGMA Parallel Board #%d Port #%d\"\n",
device, (i / 10) + 1, (i % 10) + 1);
}
/*
* Central Data parallel ports...
*/
for (i = 0; i < 9; i ++)
for (j = 0; j < 8; j ++)
for (n = 0; n < 32; n ++)
{
if (i == 8) /* EtherLite */
sprintf(device, "/dev/sts/lpN%d%c", j, funky_hex[n]);
else
sprintf(device, "/dev/sts/lp%c%d%c", i + 'C', j,
funky_hex[n]);
if (access(device, 0) == 0)
{
if (i == 8)
printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n",
device, j, n);
else
printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n",
device, i, j, n);
}
}
#elif defined(__hpux)
int i, j, n; /* Looping vars */
char device[255]; /* Device filename */
/*
* Standard parallel ports...
*/
if (access("/dev/rlp", 0) == 0)
puts("direct parallel:/dev/rlp \"Unknown\" \"Standard Parallel Port (/dev/rlp)\"");
for (i = 0; i < 7; i ++)
for (j = 0; j < 7; j ++)
{
sprintf(device, "/dev/c%dt%dd0_lp", i, j);
if (access(device, 0) == 0)
printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d,%d\"\n",
device, i, j);
}
/*
* Central Data parallel ports...
*/
for (i = 0; i < 9; i ++)
for (j = 0; j < 8; j ++)
for (n = 0; n < 32; n ++)
{
if (i == 8) /* EtherLite */
sprintf(device, "/dev/lpN%d%c", j, funky_hex[n]);
else
sprintf(device, "/dev/lp%c%d%c", i + 'C', j,
funky_hex[n]);
if (access(device, 0) == 0)
{
if (i == 8)
printf("direct parallel:%s \"Unknown\" \"Central Data EtherLite Parallel Port, ID %d, port %d\"\n",
device, j, n);
else
printf("direct parallel:%s \"Unknown\" \"Central Data SCSI Parallel Port, logical bus %d, ID %d, port %d\"\n",
device, i, j, n);
}
}
#elif defined(__osf__)
int i; /* Looping var */
int fd; /* File descriptor */
char device[255]; /* Device filename */
for (i = 0; i < 3; i ++)
{
sprintf(device, "/dev/lp%d", i);
if ((fd = open(device, O_WRONLY)) >= 0)
{
close(fd);
printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d\"\n", device, i + 1);
}
}
#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
int i; /* Looping var */
int fd; /* File descriptor */
char device[255]; /* Device filename */
for (i = 0; i < 3; i ++)
{
sprintf(device, "/dev/lpt%d", i);
if ((fd = open(device, O_WRONLY)) >= 0)
{
close(fd);
printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d (interrupt-driven)\"\n", device, i + 1);
}
sprintf(device, "/dev/lpa%d", i);
if ((fd = open(device, O_WRONLY)) >= 0)
{
close(fd);
printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d (polled)\"\n", device, i + 1);
}
}
#elif defined(_AIX)
int i; /* Looping var */
int fd; /* File descriptor */
char device[255]; /* Device filename */
for (i = 0; i < 8; i ++)
{
sprintf(device, "/dev/lp%d", i);
if ((fd = open(device, O_WRONLY)) >= 0)
{
close(fd);
printf("direct parallel:%s \"Unknown\" \"Parallel Port #%d\"\n", device, i + 1);
}
}
#endif
}
/*
* 'side_cb()' - Handle side-channel requests...
*/
static void
side_cb(int print_fd, /* I - Print file */
int device_fd, /* I - Device file */
int use_bc) /* I - Using back-channel? */
{
cups_sc_command_t command; /* Request command */
cups_sc_status_t status; /* Request/response status */
char data[2048]; /* Request/response data */
int datalen; /* Request/response data size */
datalen = sizeof(data);
if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0))
{
fputs("WARNING: Failed to read side-channel request!\n", stderr);
return;
}
switch (command)
{
case CUPS_SC_CMD_DRAIN_OUTPUT :
if (tcdrain(device_fd))
status = CUPS_SC_STATUS_IO_ERROR;
else
status = CUPS_SC_STATUS_OK;
datalen = 0;
break;
case CUPS_SC_CMD_GET_BIDI :
data[0] = use_bc;
datalen = 1;
break;
case CUPS_SC_CMD_GET_DEVICE_ID :
memset(data, 0, sizeof(data));
if (backendGetDeviceID(device_fd, data, sizeof(data) - 1,
NULL, 0, NULL, NULL, 0))
{
status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
datalen = 0;
}
else
{
status = CUPS_SC_STATUS_OK;
datalen = strlen(data);
}
break;
default :
status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
datalen = 0;
break;
}
cupsSideChannelWrite(command, status, data, datalen, 1.0);
}
/*
* End of "$Id: parallel.c 6178 2007-01-03 18:09:17Z mike $".
*/
|