/*
- * "$Id: parallel.c 5387 2006-04-10 02:51:12Z mike $"
+ * "$Id: parallel.c 6649 2007-07-11 21:46:42Z mike $"
*
* Parallel port backend for the Common UNIX Printing System (CUPS).
*
- * Copyright 1997-2006 by Easy Software Products, all rights reserved.
+ * Copyright 2007 by Apple Inc.
+ * 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
+ * property of Apple Inc. and are protected by Federal copyright
+ * law. Distribution and use rights are outlined in the file "LICENSE.txt"
* "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
+ * file is missing or damaged, see the license at "http://www.cups.org/".
*
* This file is subject to the Apple OS-Developed Software exception.
*
*
* 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 <cups/backend.h>
-#include <cups/cups.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <cups/string.h>
-#include <signal.h>
-#include "ieee1284.c"
+#include "backend-private.h"
#ifdef __hpux
# include <sys/time.h>
* Local functions...
*/
-void list_devices(void);
+static void list_devices(void);
+static void side_cb(int print_fd, int device_fd, int use_bc);
/*
resource[1024], /* Resource info (device and options) */
*options; /* Pointer to options */
int port; /* Port number (not used) */
- int fp; /* Print file */
+ int print_fd, /* Print file */
+ device_fd, /* Parallel device */
+ use_bc; /* Read back-channel data? */
int copies; /* Number of copies to print */
- int fd; /* Parallel device */
- int rbytes; /* Number of bytes read */
- int wbytes; /* Number of bytes written */
- size_t nbytes, /* Number of bytes read */
- tbytes; /* Total number of bytes written */
- char buffer[8192], /* Output buffer */
- *bufptr; /* Pointer into buffer */
+ size_t tbytes; /* Total number of bytes written */
struct termios opts; /* Parallel port options */
- fd_set input, /* Input set for select() */
- output; /* Output set for select() */
- int paperout; /* Paper out? */
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
struct sigaction action; /* Actions for POSIX signals */
#endif /* HAVE_SIGACTION && !HAVE_SIGSET */
-#ifdef __linux
- unsigned int status; /* Port status (off-line, out-of-paper, etc.) */
-#endif /* __linux */
/*
}
else if (argc < 6 || argc > 7)
{
- fputs("Usage: parallel job-id user title copies options [file]\n", stderr);
+ fprintf(stderr, _("Usage: %s job-id user title copies options [file]\n"),
+ argv[0]);
return (CUPS_BACKEND_FAILED);
}
if (argc == 6)
{
- fp = 0;
- copies = 1;
+ print_fd = 0;
+ copies = 1;
}
else
{
* Try to open the print file...
*/
- if ((fp = open(argv[6], O_RDONLY)) < 0)
+ if ((print_fd = open(argv[6], O_RDONLY)) < 0)
{
perror("ERROR: unable to open print file");
return (CUPS_BACKEND_FAILED);
do
{
- if ((fd = open(resource, O_WRONLY | O_EXCL)) == -1)
+#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)
{
* available printer in the class.
*/
- fputs("INFO: Unable to open parallel port, queuing on next printer in class...\n",
- stderr);
+ fputs(_("INFO: Unable to contact printer, queuing on next "
+ "printer in class...\n"), stderr);
/*
* Sleep 5 seconds to keep the job from requeuing too rapidly...
if (errno == EBUSY)
{
- fputs("INFO: Parallel port busy; will retry in 30 seconds...\n", stderr);
+ fputs(_("INFO: Printer 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);
+ 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",
+ fprintf(stderr, _("ERROR: Unable to open device file \"%s\": %s\n"),
resource, strerror(errno));
return (CUPS_BACKEND_FAILED);
}
}
}
- while (fd < 0);
+ while (device_fd < 0);
fputs("STATE: -connecting-to-device\n", stderr);
* Set any options provided...
*/
- tcgetattr(fd, &opts);
+ tcgetattr(device_fd, &opts);
opts.c_lflag &= ~(ICANON | ECHO | ISIG); /* Raw mode */
/**** No options supported yet ****/
- tcsetattr(fd, TCSANOW, &opts);
-
- /*
- * Check printer status...
- */
-
- paperout = 0;
-
-#if defined(__linux) && defined(LP_POUTPA)
- /*
- * Show the printer status before we send the file...
- */
-
- while (!ioctl(fd, LPGETSTATUS, &status))
- {
- fprintf(stderr, "DEBUG: LPGETSTATUS returned a port status of %02X...\n", status);
-
- if (status & LP_POUTPA)
- {
- fputs("WARNING: Media tray empty!\n", stderr);
- fputs("STATUS: +media-tray-empty-error\n", stderr);
-
- paperout = 1;
- }
-
- if (!(status & LP_PERRORP))
- fputs("WARNING: Printer fault!\n", stderr);
- else if (!(status & LP_PSELECD))
- fputs("WARNING: Printer off-line.\n", stderr);
- else
- break;
-
- sleep(5);
- }
-#endif /* __linux && LP_POUTPA */
-
- /*
- * Now that we are "connected" to the port, ignore SIGTERM so that we
- * can finish out any page data the driver sends (e.g. to eject the
- * current page... Only ignore SIGTERM if we are printing data from
- * stdin (otherwise you can't cancel raw jobs...)
- */
-
- if (argc < 7)
- {
-#ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */
- sigset(SIGTERM, SIG_IGN);
-#elif defined(HAVE_SIGACTION)
- memset(&action, 0, sizeof(action));
-
- sigemptyset(&action.sa_mask);
- action.sa_handler = SIG_IGN;
- sigaction(SIGTERM, &action, NULL);
-#else
- signal(SIGTERM, SIG_IGN);
-#endif /* HAVE_SIGSET */
- }
+ tcsetattr(device_fd, TCSANOW, &opts);
/*
* Finally, send the print file...
*/
- wbytes = 0;
+ tbytes = 0;
- while (copies > 0)
+ while (copies > 0 && tbytes >= 0)
{
copies --;
- if (fp != 0)
+ if (print_fd != 0)
{
fputs("PAGE: 1 1\n", stderr);
- lseek(fp, 0, SEEK_SET);
+ lseek(print_fd, 0, SEEK_SET);
}
- tbytes = 0;
- while ((nbytes = read(fp, buffer, sizeof(buffer))) > 0)
- {
- /*
- * Write the print data to the printer...
- */
+ tbytes = backendRunLoop(print_fd, device_fd, use_bc, side_cb);
- tbytes += nbytes;
- bufptr = buffer;
-
- while (nbytes > 0)
- {
- /*
- * See if we are ready to read or write...
- */
-
- do
- {
- FD_ZERO(&input);
- FD_SET(fd, &input);
- FD_ZERO(&output);
- FD_SET(fd, &output);
- }
- while (select(fd + 1, &input, &output, NULL, NULL) < 0);
-
- if (FD_ISSET(fd, &input))
- {
- /*
- * Read backchannel data...
- */
-
- if ((rbytes = read(fd, resource, sizeof(resource))) > 0)
- {
- fprintf(stderr, "DEBUG: Received %d bytes of back-channel data!\n",
- rbytes);
- cupsBackChannelWrite(resource, rbytes, 1.0);
- }
- }
-
- if (FD_ISSET(fd, &output))
- {
- /*
- * Write print data...
- */
-
- if ((wbytes = write(fd, bufptr, nbytes)) < 0)
- if (errno == ENOTTY)
- wbytes = write(fd, bufptr, nbytes);
-
- if (wbytes < 0)
- {
- /*
- * Check for retryable errors...
- */
-
- if (errno == ENOSPC)
- {
- paperout = 1;
- fputs("ERROR: Out of paper!\n", stderr);
- fputs("STATUS: +media-tray-empty-error\n", stderr);
- }
- else if (errno != EAGAIN && errno != EINTR)
- {
- perror("ERROR: Unable to send print file to printer");
- break;
- }
- }
- else
- {
- /*
- * Update count and pointer...
- */
-
- if (paperout)
- {
- fputs("STATUS: -media-tray-empty-error\n", stderr);
- paperout = 0;
- }
-
- nbytes -= wbytes;
- bufptr += wbytes;
- }
- }
- }
-
- if (wbytes < 0)
- break;
-
- if (argc > 6)
- fprintf(stderr, "INFO: Sending print file, %lu bytes...\n",
- (unsigned long)tbytes);
- }
+ if (print_fd != 0 && tbytes >= 0)
+ fprintf(stderr,
+#ifdef HAVE_LONG_LONG
+ _("INFO: Sent print file, %lld bytes...\n"),
+#else
+ _("INFO: Sent print file, %ld bytes...\n"),
+#endif /* HAVE_LONG_LONG */
+ CUPS_LLCAST tbytes);
}
/*
* Close the socket connection and input file and return...
*/
- close(fd);
- if (fp != 0)
- close(fp);
+ close(device_fd);
- return (wbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
+ if (print_fd != 0)
+ close(print_fd);
+
+ return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
}
* 'list_devices()' - List all parallel devices.
*/
-void
+static void
list_devices(void)
{
#if defined(__hpux) || defined(__sgi) || defined(__sun)
* Now grab the IEEE 1284 device ID string...
*/
- if (!get_device_id(fd, device_id, sizeof(device_id),
- make_model, sizeof(make_model),
- NULL, NULL, 0))
+ 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
/*
- * End of "$Id: parallel.c 5387 2006-04-10 02:51:12Z mike $".
+ * 'side_cb()' - Handle side-channel requests...
+ */
+
+static void
+side_cb(int print_fd, /* I - Print file */
+ int device_fd, /* I - Device file */
+ int use_bc) /* I - Using back-channel? */
+{
+ cups_sc_command_t command; /* Request command */
+ cups_sc_status_t status; /* Request/response status */
+ char data[2048]; /* Request/response data */
+ int datalen; /* Request/response data size */
+
+
+ datalen = sizeof(data);
+
+ if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0))
+ {
+ fputs(_("WARNING: Failed to read side-channel request!\n"), stderr);
+ return;
+ }
+
+ switch (command)
+ {
+ case CUPS_SC_CMD_DRAIN_OUTPUT :
+ if (backendDrainOutput(print_fd, device_fd))
+ status = CUPS_SC_STATUS_IO_ERROR;
+ else if (tcdrain(device_fd))
+ status = CUPS_SC_STATUS_IO_ERROR;
+ else
+ status = CUPS_SC_STATUS_OK;
+
+ datalen = 0;
+ break;
+
+ case CUPS_SC_CMD_GET_BIDI :
+ data[0] = use_bc;
+ datalen = 1;
+ break;
+
+ case CUPS_SC_CMD_GET_DEVICE_ID :
+ memset(data, 0, sizeof(data));
+
+ if (backendGetDeviceID(device_fd, data, sizeof(data) - 1,
+ NULL, 0, NULL, NULL, 0))
+ {
+ status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+ datalen = 0;
+ }
+ else
+ {
+ status = CUPS_SC_STATUS_OK;
+ datalen = strlen(data);
+ }
+ break;
+
+ default :
+ status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+ datalen = 0;
+ break;
+ }
+
+ cupsSideChannelWrite(command, status, data, datalen, 1.0);
+}
+
+
+/*
+ * End of "$Id: parallel.c 6649 2007-07-11 21:46:42Z mike $".
*/
projects / thirdparty / cups.git / blobdiff