/*
- * "$Id: usb-unix.c 181 2006-06-22 20:01:18Z jlovell $"
+ * "$Id: usb-unix.c 6293 2007-02-20 13:40:55Z mike $"
*
* USB port backend for the Common UNIX Printing System (CUPS).
*
* This file is included from "usb.c" when compiled on UNIX/Linux.
*
- * Copyright 1997-2006 by Easy Software Products, all rights reserved.
+ * 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
* print_device() - Print a file to a USB device.
* list_devices() - List all USB devices.
* open_device() - Open a USB device...
+ * side_cb() - Handle side-channel requests...
*/
/*
* Local functions...
*/
-int open_device(const char *uri);
+static int open_device(const char *uri, int *use_bc);
+static void side_cb(int print_fd, int device_fd, int use_bc);
/*
int device_fd; /* USB device */
size_t tbytes; /* Total number of bytes written */
struct termios opts; /* Parallel port options */
-#if defined(__linux) && defined(LP_POUTPA)
- unsigned int status; /* Port status (off-line, out-of-paper, etc.) */
- int paperout; /* Paper out? */
-#endif /* __linux && LP_POUTPA */
(void)argc;
(void)argv;
- /*
- * Disable backchannel data when printing to Canon USB printers - apparently
- * Canon printers will return the IEEE-1284 device ID over and over and over
- * when they get a read request...
- */
-
- use_bc = strcasecmp(hostname, "Canon") != 0;
-
/*
* Open the USB port device...
*/
do
{
- if ((device_fd = open_device(uri)) == -1)
+ /*
+ * Disable backchannel data when printing to Brother, Canon, or
+ * Minolta USB printers - apparently these printers will return
+ * the IEEE-1284 device ID over and over and over when they get
+ * a read request...
+ */
+
+ use_bc = strcasecmp(hostname, "Brother") &&
+ strcasecmp(hostname, "Canon") &&
+ strcasecmp(hostname, "Konica Minolta") &&
+ strcasecmp(hostname, "Minolta");
+
+ if ((device_fd = open_device(uri, &use_bc)) == -1)
{
if (getenv("CLASS") != NULL)
{
tcsetattr(device_fd, TCSANOW, &opts);
-#if defined(__linux) && defined(LP_POUTPA)
- /*
- * Show the printer status before we send the file...
- */
-
- paperout = 0;
-
- while (!ioctl(device_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 */
-
/*
* Finally, send the print file...
*/
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",
list_devices(void)
{
#ifdef __linux
- int i; /* Looping var */
- int fd; /* File descriptor */
- char format[255], /* Format for device filename */
- device[255], /* Device filename */
- device_id[1024], /* Device ID string */
- device_uri[1024], /* Device URI string */
- make_model[1024]; /* Make and model */
-
+ int i; /* Looping var */
+ int fd; /* File descriptor */
+ char device[255], /* Device filename */
+ device_id[1024], /* Device ID string */
+ device_uri[1024], /* Device URI string */
+ make_model[1024]; /* Make and model */
/*
- * First figure out which USB printer filename to use...
- */
-
- if (!access("/dev/usblp0", 0))
- strcpy(format, "/dev/usblp%d");
- else if (!access("/dev/usb/usblp0", 0))
- strcpy(format, "/dev/usb/usblp%d");
- else
- strcpy(format, "/dev/usb/lp%d");
-
- /*
- * Then open each USB device...
+ * Try to open each USB device...
*/
for (i = 0; i < 16; i ++)
{
- sprintf(device, format, i);
+ /*
+ * Linux has a long history of changing the standard filenames used
+ * for USB printer devices. We get the honor of trying them all...
+ */
+
+ sprintf(device, "/dev/usblp%d", i);
- if ((fd = open(device, O_RDWR | O_EXCL)) >= 0)
+ if ((fd = open(device, O_RDWR | O_EXCL)) < 0)
{
- if (!backendGetDeviceID(fd, device_id, sizeof(device_id),
- make_model, sizeof(make_model),
- "usb", device_uri, sizeof(device_uri)))
- printf("direct %s \"%s\" \"%s USB #%d\" \"%s\"\n", device_uri,
- make_model, make_model, i + 1, device_id);
+ if (errno != ENOENT)
+ continue;
- close(fd);
+ sprintf(device, "/dev/usb/lp%d", i);
+
+ if ((fd = open(device, O_RDWR | O_EXCL)) < 0)
+ {
+ if (errno != ENOENT)
+ continue;
+
+ sprintf(device, "/dev/usb/usblp%d", i);
+
+ if ((fd = open(device, O_RDWR | O_EXCL)) < 0)
+ continue;
+ }
}
+
+ if (!backendGetDeviceID(fd, device_id, sizeof(device_id),
+ make_model, sizeof(make_model),
+ "usb", device_uri, sizeof(device_uri)))
+ printf("direct %s \"%s\" \"%s USB #%d\" \"%s\"\n", device_uri,
+ make_model, make_model, i + 1, device_id);
+
+ close(fd);
}
#elif defined(__sgi)
#elif defined(__sun) && defined(ECPPIOC_GETDEVID)
{
sprintf(device, "/dev/usb/printer%d", i);
- if ((fd = open(device, O_RDWR | O_EXCL)) >= 0)
+ if ((fd = open(device, O_WRONLY | O_EXCL)) >= 0)
{
if (!backendGetDeviceID(fd, device_id, sizeof(device_id),
make_model, sizeof(make_model),
* 'open_device()' - Open a USB device...
*/
-int /* O - File descriptor or -1 on error */
-open_device(const char *uri) /* I - Device URI */
+static int /* O - File descriptor or -1 on error */
+open_device(const char *uri, /* I - Device URI */
+ int *use_bc) /* O - Set to 0 for unidirectional */
{
+ int fd; /* File descriptor */
+
+
/*
* The generic implementation just treats the URI as a device filename...
* Specific operating systems may also support using the device serial
int i; /* Looping var */
int busy; /* Are any ports busy? */
- int fd; /* File descriptor */
- char format[255], /* Format for device filename */
- device[255], /* Device filename */
+ char device[255], /* Device filename */
device_id[1024], /* Device ID string */
make_model[1024], /* Make and model */
device_uri[1024]; /* Device URI string */
/*
- * First figure out which USB printer filename to use...
- */
-
- if (!access("/dev/usblp0", 0))
- strcpy(format, "/dev/usblp%d");
- else if (!access("/dev/usb/usblp0", 0))
- strcpy(format, "/dev/usb/usblp%d");
- else
- strcpy(format, "/dev/usb/lp%d");
-
- /*
- * Then find the correct USB device...
+ * Find the correct USB device...
*/
do
{
for (busy = 0, i = 0; i < 16; i ++)
{
- sprintf(device, format, i);
+ /*
+ * Linux has a long history of changing the standard filenames used
+ * for USB printer devices. We get the honor of trying them all...
+ */
+
+ sprintf(device, "/dev/usblp%d", i);
- if ((fd = open(device, O_RDWR | O_EXCL)) >= 0)
+ if ((fd = open(device, O_RDWR | O_EXCL)) < 0 && errno == ENOENT)
+ {
+ sprintf(device, "/dev/usb/lp%d", i);
+
+ if ((fd = open(device, O_RDWR | O_EXCL)) < 0 && errno == ENOENT)
+ {
+ sprintf(device, "/dev/usb/usblp%d", i);
+
+ if ((fd = open(device, O_RDWR | O_EXCL)) < 0 && errno == ENOENT)
+ continue;
+ }
+ }
+
+ if (fd >= 0)
{
backendGetDeviceID(fd, device_id, sizeof(device_id),
make_model, sizeof(make_model),
int i; /* Looping var */
int busy; /* Are any ports busy? */
- int fd; /* File descriptor */
char device[255], /* Device filename */
device_id[1024], /* Device ID string */
make_model[1024], /* Make and model */
{
sprintf(device, "/dev/usb/printer%d", i);
- if ((fd = open(device, O_RDWR | O_EXCL)) >= 0)
+ if ((fd = open(device, O_WRONLY | O_EXCL)) >= 0)
backendGetDeviceID(fd, device_id, sizeof(device_id),
make_model, sizeof(make_model),
"usb", device_uri, sizeof(device_uri));
}
if (!strcmp(uri, device_uri))
- return (fd); /* Yes, return this file descriptor... */
+ {
+ /*
+ * Yes, return this file descriptor...
+ */
+
+ fputs("DEBUG: Setting use_bc to 0!\n", stderr);
+
+ *use_bc = 0;
+
+ return (fd);
+ }
/*
* This wasn't the one...
return (-1);
}
#else
- return (open(uri + 4, O_RDWR | O_EXCL));
+ {
+ if ((fd = open(uri + 4, O_RDWR | O_EXCL)) < 0)
+ {
+ fd = open(uri + 4, O_WRONLY | O_EXCL);
+ *use_bc = 0;
+ }
+
+ return (fd);
+ }
#endif /* __linux */
else
{
/*
- * End of "$Id: usb-unix.c 181 2006-06-22 20:01:18Z jlovell $".
+ * 'side_cb()' - Handle side-channel requests...
+ */
+
+static void
+side_cb(int print_fd, /* I - Print file */
+ int device_fd, /* I - Device file */
+ int use_bc) /* I - Using back-channel? */
+{
+ cups_sc_command_t command; /* Request command */
+ cups_sc_status_t status; /* Request/response status */
+ char data[2048]; /* Request/response data */
+ int datalen; /* Request/response data size */
+
+
+ datalen = sizeof(data);
+
+ if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0))
+ {
+ fputs("WARNING: Failed to read side-channel request!\n", stderr);
+ return;
+ }
+
+ switch (command)
+ {
+ case CUPS_SC_CMD_DRAIN_OUTPUT :
+ if (tcdrain(device_fd))
+ status = CUPS_SC_STATUS_IO_ERROR;
+ else
+ status = CUPS_SC_STATUS_OK;
+
+ datalen = 0;
+ break;
+
+ case CUPS_SC_CMD_GET_BIDI :
+ data[0] = use_bc;
+ datalen = 1;
+ break;
+
+ case CUPS_SC_CMD_GET_DEVICE_ID :
+ memset(data, 0, sizeof(data));
+
+ if (backendGetDeviceID(device_fd, data, sizeof(data) - 1,
+ NULL, 0, NULL, NULL, 0))
+ {
+ status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+ datalen = 0;
+ }
+ else
+ {
+ status = CUPS_SC_STATUS_OK;
+ datalen = strlen(data);
+ }
+ break;
+
+ default :
+ status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+ datalen = 0;
+ break;
+ }
+
+ cupsSideChannelWrite(command, status, data, datalen, 1.0);
+}
+
+
+/*
+ * End of "$Id: usb-unix.c 6293 2007-02-20 13:40:55Z mike $".
*/
projects / thirdparty / cups.git / blobdiff