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/*
* USB printer backend for CUPS.
*
* Copyright © 2007-2012 by Apple Inc.
* Copyright © 1997-2007 by Easy Software Products, all rights reserved.
*
* Licensed under Apache License v2.0. See the file "LICENSE" for more
* information.
*/
/*
* Include necessary headers.
*/
#ifdef __APPLE__
/* A header order dependency requires this be first */
# include <ApplicationServices/ApplicationServices.h>
#endif /* __APPLE__ */
#include "backend-private.h"
#ifdef _WIN32
# include <io.h>
#else
# include <unistd.h>
# include <fcntl.h>
# include <termios.h>
#endif /* _WIN32 */
/*
* Local functions...
*/
void list_devices(void);
int print_device(const char *uri, const char *hostname,
const char *resource, char *options,
int print_fd, int copies, int argc, char *argv[]);
/*
* Include the vendor-specific USB implementation...
*/
#ifdef HAVE_LIBUSB
# include "usb-libusb.c"
#elif defined(__APPLE__)
# include "usb-darwin.c"
#elif defined(__linux) || defined(__sun) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
# include "usb-unix.c"
#else
/*
* Use dummy functions that do nothing on unsupported platforms...
* These can be used as templates for implementing USB printing on new
* platforms...
*/
/*
* 'list_devices()' - List all available USB devices to stdout.
*/
void
list_devices(void)
{
/*
* Don't have any devices to list... Use output of the form:
*
* direct usb:/make/model?serial=foo "Make Model" "USB Printer"
*
* Note that "Hewlett Packard" or any other variation MUST be mapped to
* "HP" for compatibility with the PPD and ICC specs.
*/
}
/*
* 'print_device()' - Print a file to a USB device.
*/
int /* O - Exit status */
print_device(const char *uri, /* I - Device URI */
const char *hostname, /* I - Hostname/manufacturer */
const char *resource, /* I - Resource/modelname */
char *options, /* I - Device options/serial number */
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 */
{
/*
* Can't print, so just reference the arguments to eliminate compiler
* warnings and return and exit status of 1. Normally you would use the
* arguments to send a file to the printer and return 0 if everything
* worked OK and non-zero if there was an error.
*/
(void)uri;
(void)hostname;
(void)resource;
(void)options;
(void)print_fd;
(void)copies;
(void)argc;
(void)argv;
return (CUPS_BACKEND_FAILED);
}
#endif /* HAVE_LIBUSB */
/*
* 'main()' - Send a file to the specified USB 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 */
{
int print_fd; /* Print file */
int copies; /* Number of copies to print */
int status; /* Exit status */
int port; /* Port number (not used) */
const char *uri; /* Device URI */
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 */
#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)
{
_cupsLangPrintf(stderr,
_("Usage: %s job-id user title copies options [file]"),
argv[0]);
return (CUPS_BACKEND_FAILED);
}
/*
* Extract the device name and options from the URI...
*/
uri = cupsBackendDeviceURI(argv);
if (httpSeparateURI(HTTP_URI_CODING_ALL, uri,
method, sizeof(method), username, sizeof(username),
hostname, sizeof(hostname), &port,
resource, sizeof(resource)) < HTTP_URI_OK)
{
_cupsLangPrintFilter(stderr, "ERROR",
_("No device URI found in argv[0] or in DEVICE_URI "
"environment variable."));
return (1);
}
/*
* 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';
}
/*
* 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)
{
_cupsLangPrintError("ERROR", _("Unable to open print file"));
return (CUPS_BACKEND_FAILED);
}
copies = atoi(argv[4]);
}
/*
* Finally, send the print file...
*/
status = print_device(uri, hostname, resource, options, print_fd, copies,
argc, argv);
/*
* Close the input file and return...
*/
if (print_fd != 0)
close(print_fd);
return (status);
}
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