/*
- * "$Id: parallel.c 5726 2006-07-12 20:00:11Z 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...
*/
/*
* Local functions...
*/
-void list_devices(void);
+static void list_devices(void);
+static void side_cb(int print_fd, int device_fd, int use_bc);
/*
*options; /* Pointer to options */
int port; /* Port number (not used) */
int print_fd, /* Print file */
- device_fd; /* Parallel device */
+ 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 */
}
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);
}
do
{
- if ((device_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",
+ 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);
}
lseek(print_fd, 0, SEEK_SET);
}
- tbytes = backendRunLoop(print_fd, device_fd, 1);
+ 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);
+ 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);
}
/*
* 'list_devices()' - List all parallel devices.
*/
-void
+static void
list_devices(void)
{
#if defined(__hpux) || defined(__sgi) || defined(__sun)
/*
- * End of "$Id: parallel.c 5726 2006-07-12 20:00:11Z 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