backend/parallel.c

   1 /*
   2  * "$Id: parallel.c,v 1.9 2000/01/25 03:50:47 mike Exp $"
   3  *
   4  *   Parallel port backend for the Common UNIX Printing System (CUPS).
   5  *
   6  *   Copyright 1997-2000 by Easy Software Products, all rights reserved.
   7  *
   8  *   These coded instructions, statements, and computer programs are the
   9  *   property of Easy Software Products and are protected by Federal
  10  *   copyright law.  Distribution and use rights are outlined in the file
  11  *   "LICENSE" which should have been included with this file.  If this
  12  *   file is missing or damaged please contact Easy Software Products
  13  *   at:
  14  *
  15  *       Attn: CUPS Licensing Information
  16  *       Easy Software Products
  17  *       44141 Airport View Drive, Suite 204
  18  *       Hollywood, Maryland 20636-3111 USA
  19  *
  20  *       Voice: (301) 373-9603
  21  *       EMail: cups-info@cups.org
  22  *         WWW: http://www.cups.org
  23  *
  24  * Contents:
  25  *
  26  *   main()         - Send a file to the specified parallel port.
  27  *   list_devices() - List all parallel devices.
  28  */
  29
  30 /*
  31  * Include necessary headers.
  32  */
  33
  34 #include <cups/cups.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <cups/string.h>
  38
  39 #if defined(WIN32) || defined(__EMX__)
  40 #  include <io.h>
  41 #else
  42 #  include <unistd.h>
  43 #  include <fcntl.h>
  44 #  include <termios.h>
  45 #endif /* WIN32 || __EMX__ */
  46
  47
  48 /*
  49  * Local functions...
  50  */
  51
  52 void    list_devices(void);
  53
  54
  55 /*
  56  * 'main()' - Send a file to the specified parallel port.
  57  *
  58  * Usage:
  59  *
  60  *    printer-uri job-id user title copies options [file]
  61  */
  62
  63 int                     /* O - Exit status */
  64 main(int  argc,         /* I - Number of command-line arguments (6 or 7) */
  65      char *argv[])      /* I - Command-line arguments */
  66 {
  67   char          method[255],    /* Method in URI */
  68                 hostname[1024], /* Hostname */
  69                 username[255],  /* Username info (not used) */
  70                 resource[1024], /* Resource info (device and options) */
  71                 *options;       /* Pointer to options */
  72   int           port;           /* Port number (not used) */
  73   FILE          *fp;            /* Print file */
  74   int           copies;         /* Number of copies to print */
  75   int           fd;             /* Parallel device */
  76   int           error;          /* Error code (if any) */
  77   size_t        nbytes,         /* Number of bytes written */
  78                 tbytes;         /* Total number of bytes written */
  79   char          buffer[8192];   /* Output buffer */
  80   struct termios opts;          /* Parallel port options */
  81
  82
  83   if (argc == 1)
  84   {
  85     list_devices();
  86     return (0);
  87   }
  88   else if (argc < 6 || argc > 7)
  89   {
  90     fputs("Usage: parallel job-id user title copies options [file]\n", stderr);
  91     return (1);
  92   }
  93
  94  /*
  95   * If we have 7 arguments, print the file named on the command-line.
  96   * Otherwise, send stdin instead...
  97   */
  98
  99   if (argc == 6)
 100   {
 101     fp     = stdin;
 102     copies = 1;
 103   }
 104   else
 105   {
 106    /*
 107     * Try to open the print file...
 108     */
 109
 110     if ((fp = fopen(argv[6], "rb")) == NULL)
 111     {
 112       perror("ERROR: unable to open print file");
 113       return (1);
 114     }
 115
 116     copies = atoi(argv[4]);
 117   }
 118
 119  /*
 120   * Extract the device name and options from the URI...
 121   */
 122
 123   httpSeparate(argv[0], method, username, hostname, &port, resource);
 124
 125  /*
 126   * See if there are any options...
 127   */
 128
 129   if ((options = strchr(resource, '?')) != NULL)
 130   {
 131    /*
 132     * Yup, terminate the device name string and move to the first
 133     * character of the options...
 134     */
 135
 136     *options++ = '\0';
 137   }
 138
 139  /*
 140   * Open the parallel port device...
 141   */
 142
 143   if ((fd = open(resource, O_WRONLY)) == -1)
 144   {
 145     perror("ERROR: Unable to open parallel port device file");
 146     return (1);
 147   }
 148
 149  /*
 150   * Set any options provided...
 151   */
 152
 153   tcgetattr(fd, &opts);
 154
 155   opts.c_lflag &= ~(ICANON | ECHO | ISIG);      /* Raw mode */
 156
 157   /**** No options supported yet ****/
 158
 159   tcsetattr(fd, TCSANOW, &opts);
 160
 161  /*
 162   * Finally, send the print file...
 163   */
 164
 165   while (copies > 0)
 166   {
 167     copies --;
 168
 169     if (fp != stdin)
 170     {
 171       fputs("PAGE: 1 1\n", stderr);
 172       rewind(fp);
 173     }
 174
 175     tbytes = 0;
 176     while ((nbytes = fread(buffer, 1, sizeof(buffer), fp)) > 0)
 177     {
 178      /*
 179       * Write the print data to the printer...
 180       */
 181
 182       if (write(fd, buffer, nbytes) < nbytes)
 183       {
 184         perror("ERROR: Unable to send print file to printer");
 185         break;
 186       }
 187       else
 188         tbytes += nbytes;
 189
 190       if (argc > 6)
 191         fprintf(stderr, "INFO: Sending print file, %u bytes...\n", tbytes);
 192     }
 193   }
 194
 195  /*
 196   * Close the socket connection and input file and return...
 197   */
 198
 199   close(fd);
 200   if (fp != stdin)
 201     fclose(fp);
 202
 203   return (0);
 204 }
 205
 206
 207 /*
 208  * 'list_devices()' - List all parallel devices.
 209  */
 210
 211 void
 212 list_devices(void)
 213 {
 214 #ifdef __linux
 215   int   i;              /* Looping var */
 216   char  device[255];    /* Device filename */
 217
 218
 219   for (i = 0; i < 4; i ++)
 220   {
 221     sprintf(device, "/dev/lp%d", i);
 222     if (access(device, F_OK) == 0)
 223       fprintf(stderr, "parallel parallel:/dev/lp%d \"\" \"Parallel Port #%d\"\n",
 224               i, i + 1);
 225   }
 226 #elif defined(__sgi)
 227 #elif defined(__sun)
 228 #elif defined(__hpux)
 229 #elif defined(__osf)
 230 #elif defined(FreeBSD) || defined(OpenBSD) || defined(NetBSD)
 231 #endif
 232 }
 233
 234
 235 /*
 236  * End of "$Id: parallel.c,v 1.9 2000/01/25 03:50:47 mike Exp $".
 237  */