/*
- * "$Id: usb-unix.c 5162 2006-02-24 03:15:13Z mike $"
+ * "$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
*
* Contents:
*
- * main() - Send a file to the specified USB port.
+ * 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);
/*
const char *hostname, /* I - Hostname/manufacturer */
const char *resource, /* I - Resource/modelname */
const char *options, /* I - Device options/serial number */
- int fp, /* I - File descriptor to print */
- int copies) /* I - Copies to print */
+ int print_fd, /* I - File descriptor to print */
+ int copies, /* I - Copies to print */
+ int argc, /* I - Number of command-line arguments (6 or 7) */
+ char *argv[]) /* I - Command-line arguments */
{
- int fd; /* USB 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 */
- backbuf[1024]; /* Backchannel buffer */
+ int use_bc; /* Use backchannel path? */
+ int device_fd; /* USB device */
+ 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 */
+ (void)argc;
+ (void)argv;
+
/*
* Open the USB port device...
*/
+ fputs("STATE: +connecting-to-device\n", stderr);
+
do
{
- if ((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)
{
fputs("INFO: USB port busy; will retry in 30 seconds...\n", stderr);
sleep(30);
}
- else if (errno == ENXIO || errno == EIO || errno == ENOENT || errno == ENODEV)
+ else if (errno == ENXIO || errno == EIO || errno == ENOENT ||
+ errno == ENODEV)
{
fputs("INFO: Printer not connected; will retry in 30 seconds...\n", stderr);
sleep(30);
}
}
}
- 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 (!fp)
- {
-#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 += 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, backbuf, sizeof(backbuf))) > 0)
- {
- fprintf(stderr, "DEBUG: Received %d bytes of back-channel data!\n",
- rbytes);
- cupsBackChannelWrite(backbuf, 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;
- }
- }
- }
+ tbytes = backendRunLoop(print_fd, device_fd, use_bc, side_cb);
- if (wbytes < 0)
- break;
-
- if (fp)
- fprintf(stderr, "INFO: Sending print file, %lu bytes...\n",
- (unsigned long)tbytes);
- }
+ if (print_fd != 0 && tbytes >= 0)
+ fprintf(stderr, "INFO: Sent print file, " CUPS_LLFMT " bytes...\n",
+ CUPS_LLCAST tbytes);
}
/*
* Close the USB port and return...
*/
- close(fd);
+ close(device_fd);
- return (wbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
+ return (tbytes < 0 ? CUPS_BACKEND_FAILED : CUPS_BACKEND_OK);
}
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 */
-
-
- /*
- * 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");
+ 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 */
/*
- * 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 (!get_device_id(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)
device_id[1024], /* Device ID string */
device_uri[1024], /* Device URI string */
make_model[1024]; /* Make and model */
- struct ecpp_device_id did; /* Device ID buffer */
/*
{
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 (!get_device_id(fd, device_id, sizeof(device_id),
- make_model, sizeof(make_model),
- "usb", device_uri, sizeof(device_uri)))
+ 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);
* '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
if (!strncmp(uri, "usb:/dev/", 9))
#ifdef __linux
- return (-1); /* Do not allow direct devices anymore */
+ {
+ /*
+ * Do not allow direct devices anymore...
+ */
+
+ errno = ENODEV;
+ return (-1);
+ }
else if (!strncmp(uri, "usb://", 6))
{
/*
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 && 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 = open(device, O_RDWR | O_EXCL)) >= 0)
+ if (fd >= 0)
{
- get_device_id(fd, device_id, sizeof(device_id),
- make_model, sizeof(make_model),
- "usb", device_uri, sizeof(device_uri));
+ backendGetDeviceID(fd, device_id, sizeof(device_id),
+ make_model, sizeof(make_model),
+ "usb", device_uri, sizeof(device_uri));
}
else
{
return (-1);
}
#elif defined(__sun) && defined(ECPPIOC_GETDEVID)
- return (-1); /* Do not allow direct devices anymore */
+ {
+ /*
+ * Do not allow direct devices anymore...
+ */
+
+ errno = ENODEV;
+ return (-1);
+ }
else if (!strncmp(uri, "usb://", 6))
{
/*
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 */
device_uri[1024]; /* Device URI string */
- struct ecpp_device_id did; /* Device ID buffer */
/*
{
sprintf(device, "/dev/usb/printer%d", i);
- if ((fd = open(device, O_RDWR | O_EXCL)) >= 0)
- get_device_id(fd, device_id, sizeof(device_id),
- make_model, sizeof(make_model),
- "usb", device_uri, sizeof(device_uri));
+ 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));
else
{
/*
}
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 5162 2006-02-24 03:15:13Z mike $".
+ * 'side_cb()' - Handle side-channel requests...
+ */
+
+static void
+side_cb(int print_fd, /* I - Print file */
+ int device_fd, /* I - Device file */
+ int use_bc) /* I - Using back-channel? */
+{
+ cups_sc_command_t command; /* Request command */
+ cups_sc_status_t status; /* Request/response status */
+ char data[2048]; /* Request/response data */
+ int datalen; /* Request/response data size */
+
+
+ datalen = sizeof(data);
+
+ if (cupsSideChannelRead(&command, &status, data, &datalen, 1.0))
+ {
+ fputs("WARNING: Failed to read side-channel request!\n", stderr);
+ return;
+ }
+
+ switch (command)
+ {
+ case CUPS_SC_CMD_DRAIN_OUTPUT :
+ if (tcdrain(device_fd))
+ status = CUPS_SC_STATUS_IO_ERROR;
+ else
+ status = CUPS_SC_STATUS_OK;
+
+ datalen = 0;
+ break;
+
+ case CUPS_SC_CMD_GET_BIDI :
+ data[0] = use_bc;
+ datalen = 1;
+ break;
+
+ case CUPS_SC_CMD_GET_DEVICE_ID :
+ memset(data, 0, sizeof(data));
+
+ if (backendGetDeviceID(device_fd, data, sizeof(data) - 1,
+ NULL, 0, NULL, NULL, 0))
+ {
+ status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+ datalen = 0;
+ }
+ else
+ {
+ status = CUPS_SC_STATUS_OK;
+ datalen = strlen(data);
+ }
+ break;
+
+ default :
+ status = CUPS_SC_STATUS_NOT_IMPLEMENTED;
+ datalen = 0;
+ break;
+ }
+
+ cupsSideChannelWrite(command, status, data, datalen, 1.0);
+}
+
+
+/*
+ * End of "$Id: usb-unix.c 6293 2007-02-20 13:40:55Z mike $".
*/
projects / thirdparty / cups.git / blobdiff