lpr.c   [plain text]

/*
 * "$Id: lpr.c 7721 2008-07-11 22:48:49Z mike $"
 *
 *   "lpr" command for the Common UNIX Printing System (CUPS).
 *
 *   Copyright 2007-2008 by Apple Inc.
 *   Copyright 1997-2007 by Easy Software Products.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Apple Inc. and are protected by Federal copyright
 *   law.  Distribution and use rights are outlined in the file "LICENSE.txt"
 *   which should have been included with this file.  If this file is
 *   file is missing or damaged, see the license at "http://www.cups.org/".
 *
 * Contents:
 *
 *   main()       - Parse options and send files for printing.
 *   sighandler() - Signal catcher for when we print from stdin...
 */

/*
 * Include necessary headers...
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

#include <cups/string.h>
#include <cups/cups.h>
#include <cups/i18n.h>

#ifndef WIN32
#  include <unistd.h>
#  include <signal.h>


/*
 * Local functions.
 */

void	sighandler(int);
#endif /* !WIN32 */


/*
 * Globals...
 */

char	tempfile[1024];		/* Temporary file for printing from stdin */


/*
 * 'main()' - Parse options and send files for printing.
 */

int
main(int  argc,				/* I - Number of command-line arguments */
     char *argv[])			/* I - Command-line arguments */
{
  int		i, j;			/* Looping var */
  int		job_id;			/* Job ID */
  char		ch;			/* Option character */
  char		*printer,		/* Destination printer or class */
		*instance;		/* Instance */
  const char	*title,			/* Job title */
		*val;			/* Environment variable name */
  int		num_copies;		/* Number of copies per file */
  int		num_files;		/* Number of files to print */
  const char	*files[1000];		/* Files to print */
  int		num_dests;		/* Number of destinations */
  cups_dest_t	*dests,			/* Destinations */
		*dest;			/* Selected destination */
  int		num_options;		/* Number of options */
  cups_option_t	*options;		/* Options */
  int		deletefile;		/* Delete file after print? */
  char		buffer[8192];		/* Copy buffer */
  ssize_t	bytes;			/* Bytes copied */
  off_t		filesize;		/* Size of temp file */
  int		temp;			/* Temporary file descriptor */
#if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET)
  struct sigaction action;		/* Signal action */
  struct sigaction oldaction;		/* Old signal action */
#endif /* HAVE_SIGACTION && !HAVE_SIGSET */


  _cupsSetLocale(argv);

  deletefile  = 0;
  printer     = NULL;
  num_dests   = 0;
  dests       = NULL;
  num_options = 0;
  options     = NULL;
  num_files   = 0;
  title       = NULL;

  for (i = 1; i < argc; i ++)
    if (argv[i][0] == '-')
      switch (ch = argv[i][1])
      {
        case 'E' : /* Encrypt */
#ifdef HAVE_SSL
	    cupsSetEncryption(HTTP_ENCRYPT_REQUIRED);
#else
            _cupsLangPrintf(stderr,
	                    _("%s: Sorry, no encryption support compiled in!\n"),
	                    argv[0]);
#endif /* HAVE_SSL */
	    break;

        case 'U' : /* Username */
	    if (argv[i][2] != '\0')
	      cupsSetUser(argv[i] + 2);
	    else
	    {
	      i ++;
	      if (i >= argc)
	      {
	        _cupsLangPrintf(stderr,
		                _("%s: Error - expected username after "
				  "\'-U\' option!\n"),
		        	argv[0]);
	        return (1);
	      }

              cupsSetUser(argv[i]);
	    }
	    break;
	    
        case 'H' : /* Connect to host */
	    if (argv[i][2] != '\0')
              cupsSetServer(argv[i] + 2);
	    else
	    {
	      i ++;

	      if (i >= argc)
	      {
	        _cupsLangPrintf(stderr,
		        	_("%s: Error - expected hostname after "
			          "\'-H\' option!\n"),
				argv[0]);
		return (1);
              }
	      else
                cupsSetServer(argv[i]);
	    }
	    break;

	case '1' : /* TROFF font set 1 */
	case '2' : /* TROFF font set 2 */
	case '3' : /* TROFF font set 3 */
	case '4' : /* TROFF font set 4 */
	case 'i' : /* indent */
	case 'w' : /* width */
	    if (argv[i][2] == '\0')
	    {
	      i ++;

	      if (i >= argc)
	      {
		_cupsLangPrintf(stderr,
		                _("%s: Error - expected value after \'-%c\' "
				  "option!\n"), argv[0], ch);
		return (1);
	      }
	    }

        case 'c' : /* CIFPLOT */
	case 'd' : /* DVI */
	case 'f' : /* FORTRAN */
	case 'g' : /* plot */
	case 'n' : /* Ditroff */
	case 't' : /* Troff */
	case 'v' : /* Raster image */
	    _cupsLangPrintf(stderr,
	                    _("%s: Warning - \'%c\' format modifier not "
			      "supported - output may not be correct!\n"),
			    argv[0], ch);
	    break;

	case 'o' : /* Option */
	    if (argv[i][2] != '\0')
	      num_options = cupsParseOptions(argv[i] + 2, num_options, &options);
	    else
	    {
	      i ++;
	      if (i >= argc)
	      {
	        _cupsLangPrintf(stderr,
		                _("%s: error - expected option=value after "
			          "\'-o\' option!\n"),
				argv[0]);
		return (1);
	      }

	      num_options = cupsParseOptions(argv[i], num_options, &options);
	    }
	    break;

	case 'l' : /* Literal/raw */
            num_options = cupsAddOption("raw", "true", num_options, &options);
	    break;

	case 'p' : /* Prettyprint */
            num_options = cupsAddOption("prettyprint", "true", num_options,
	                                &options);
	    break;

	case 'h' : /* Suppress burst page */
            num_options = cupsAddOption("job-sheets", "none", num_options,
	                                &options);
	    break;

	case 's' : /* Don't use symlinks */
	    break;

	case 'm' : /* Mail on completion */
	    {
	      char	email[1024];	/* EMail address */


	      snprintf(email, sizeof(email), "mailto:%s@%s", cupsUser(),
	               httpGetHostname(NULL, buffer, sizeof(buffer)));
	      num_options = cupsAddOption("notify-recipient-uri", email,
	                                  num_options, &options);
	    }
	    break;

	case 'q' : /* Queue file but don't print */
            num_options = cupsAddOption("job-hold-until", "indefinite",
	                                num_options, &options);
	    break;

	case 'r' : /* Remove file after printing */
	    deletefile = 1;
	    break;

        case 'P' : /* Destination printer or class */
	    if (argv[i][2] != '\0')
	      printer = argv[i] + 2;
	    else
	    {
	      i ++;
	      if (i >= argc)
	      {
	        _cupsLangPrintf(stderr,
		        	_("%s: Error - expected destination after "
			          "\'-P\' option!\n"),
				argv[0]);
		return (1);
	      }

	      printer = argv[i];
	    }

            if ((instance = strrchr(printer, '/')) != NULL)
	      *instance++ = '\0';

	    if (num_dests == 0)
	      num_dests = cupsGetDests(&dests);

            if ((dest = cupsGetDest(printer, instance, num_dests, dests)) != NULL)
	    {
	      for (j = 0; j < dest->num_options; j ++)
	        if (cupsGetOption(dest->options[j].name, num_options,
		                  options) == NULL)
	          num_options = cupsAddOption(dest->options[j].name,
		                              dest->options[j].value,
					      num_options, &options);
	    }
	    break;

	case '#' : /* Number of copies */
	    if (argv[i][2] != '\0')
	      num_copies = atoi(argv[i] + 2);
	    else
	    {
	      i ++;
	      if (i >= argc)
	      {
	        _cupsLangPrintf(stderr,
		        	_("%s: Error - expected copy count after "
			          "\'-#\' option!\n"),
				argv[0]);
		return (1);
	      }

	      num_copies = atoi(argv[i]);
	    }

            sprintf(buffer, "%d", num_copies);
            num_options = cupsAddOption("copies", buffer, num_options, &options);
	    break;

	case 'C' : /* Class */
	case 'J' : /* Job name */
	case 'T' : /* Title */
	    if (argv[i][2] != '\0')
	      title = argv[i] + 2;
	    else
	    {
	      i ++;
	      if (i >= argc)
	      {
		_cupsLangPrintf(stderr,
		                _("%s: Error - expected name after \'-%c\' "
				  "option!\n"), argv[0], ch);
		return (1);
	      }

	      title = argv[i];
	    }
	    break;

	default :
	    _cupsLangPrintf(stderr,
	                    _("%s: Error - unknown option \'%c\'!\n"),
			    argv[0], argv[i][1]);
	    return (1);
      }
    else if (num_files < 1000)
    {
     /*
      * Print a file...
      */

      if (access(argv[i], R_OK) != 0)
      {
        _cupsLangPrintf(stderr,
	                _("%s: Error - unable to access \"%s\" - %s\n"),
		        argv[0], argv[i], strerror(errno));
        return (1);
      }

      files[num_files] = argv[i];
      num_files ++;

      if (title == NULL)
      {
        if ((title = strrchr(argv[i], '/')) != NULL)
	  title ++;
	else
          title = argv[i];
      }
    }
    else
      _cupsLangPrintf(stderr,
                      _("%s: Error - too many files - \"%s\"\n"),
		      argv[0], argv[i]);
 /*
  * See if we have any files to print; if not, print from stdin...
  */

  if (printer == NULL)
  {
    if (num_dests == 0)
      num_dests = cupsGetDests(&dests);

    if ((dest = cupsGetDest(NULL, NULL, num_dests, dests)) != NULL)
    {
      printer = dest->name;

      for (j = 0; j < dest->num_options; j ++)
	if (cupsGetOption(dest->options[j].name, num_options, options) == NULL)
	  num_options = cupsAddOption(dest->options[j].name,
		                      dest->options[j].value,
				      num_options, &options);
    }
  }

  if (printer == NULL)
  {
    val = NULL;

    if ((printer = getenv("LPDEST")) == NULL)
    {
      if ((printer = getenv("PRINTER")) != NULL)
      {
        if (!strcmp(printer, "lp"))
          printer = NULL;
	else
	  val = "PRINTER";
      }
    }
    else
      val = "LPDEST";

    if (printer && !cupsGetDest(printer, NULL, num_dests, dests))
      _cupsLangPrintf(stderr,
                      _("%s: Error - %s environment variable names "
		        "non-existent destination \"%s\"!\n"),
        	      argv[0], val, printer);
    else if (cupsLastError() == IPP_NOT_FOUND)
      _cupsLangPrintf(stderr,
                      _("%s: Error - no default destination available.\n"),
		      argv[0]);
    else
      _cupsLangPrintf(stderr,
                      _("%s: Error - scheduler not responding!\n"),
		      argv[0]);

    return (1);
  }

  if (num_files > 0)
  {
    job_id = cupsPrintFiles(printer, num_files, files, title, num_options, options);

    if (deletefile && job_id > 0)
    {
     /*
      * Delete print files after printing...
      */

      for (i = 0; i < num_files; i ++)
        unlink(files[i]);
    }
  }
  else
  {
#ifndef WIN32
#  if defined(HAVE_SIGSET)
    sigset(SIGHUP, sighandler);
    if (sigset(SIGINT, sighandler) == SIG_IGN)
      sigset(SIGINT, SIG_IGN);
    sigset(SIGTERM, sighandler);
#  elif defined(HAVE_SIGACTION)
    memset(&action, 0, sizeof(action));
    action.sa_handler = sighandler;

    sigaction(SIGHUP, &action, NULL);
    sigaction(SIGINT, NULL, &oldaction);
    if (oldaction.sa_handler != SIG_IGN)
      sigaction(SIGINT, &action, NULL);
    sigaction(SIGTERM, &action, NULL);
#  else
    signal(SIGHUP, sighandler);
    if (signal(SIGINT, sighandler) == SIG_IGN)
      signal(SIGINT, SIG_IGN);
    signal(SIGTERM, sighandler);
#  endif
#endif /* !WIN32 */

    if ((temp = cupsTempFd(tempfile, sizeof(tempfile))) < 0)
    {
      _cupsLangPrintf(stderr,
                      _("%s: Error - unable to create temporary file "
		        "\"%s\" - %s\n"),
        	      argv[0], tempfile, strerror(errno));
      return (1);
    }

    while ((bytes = read(0, buffer, sizeof(buffer))) > 0)
      if (write(temp, buffer, bytes) < 0)
      {
	_cupsLangPrintf(stderr,
	                _("%s: Error - unable to write to temporary file "
			  "\"%s\" - %s\n"),
        		argv[0], tempfile, strerror(errno));
        close(temp);
        unlink(tempfile);
	return (1);
      }

    filesize = lseek(temp, 0, SEEK_CUR);
    close(temp);

    if (filesize <= 0)
    {
      _cupsLangPrintf(stderr,
                      _("%s: Error - stdin is empty, so no job has been sent.\n"),
		      argv[0]);
      unlink(tempfile);
      return (1);
    }

    if (title)
      job_id = cupsPrintFile(printer, tempfile, title, num_options, options);
    else
      job_id = cupsPrintFile(printer, tempfile, "(stdin)", num_options, options);

    unlink(tempfile);
  }

  if (job_id < 1)
  {
    _cupsLangPrintf(stderr, "%s: %s\n", argv[0], cupsLastErrorString());
    return (1);
  }

  return (0);
}


#ifndef WIN32
/*
 * 'sighandler()' - Signal catcher for when we print from stdin...
 */

void
sighandler(int s)			/* I - Signal number */
{
 /*
  * Remove the temporary file we're using to print from stdin...
  */

  unlink(tempfile);

 /*
  * Exit...
  */

  exit(s);
}
#endif /* !WIN32 */


/*
 * End of "$Id: lpr.c 7721 2008-07-11 22:48:49Z mike $".
 */