source3/printing/print_generic.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    printing command routines
   4    Copyright (C) Andrew Tridgell 1992-2000
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "printing.h"
  22
  23
  24 /*
  25  * Generic printing interface definitions...
  26  */
  27
  28 static int generic_job_delete(int snum, struct printjob *pjob);
  29 static int generic_job_pause(int snum, struct printjob *pjob);
  30 static int generic_job_resume(int snum, struct printjob *pjob);
  31 static int generic_job_submit(int snum, struct printjob *pjob);
  32 static int generic_queue_get(int snum, print_queue_struct **q,
  33                              print_status_struct *status);
  34 static int generic_queue_pause(int snum);
  35 static int generic_queue_resume(int snum);
  36
  37
  38 struct printif  generic_printif =
  39                 {
  40                   generic_queue_get,
  41                   generic_queue_pause,
  42                   generic_queue_resume,
  43                   generic_job_delete,
  44                   generic_job_pause,
  45                   generic_job_resume,
  46                   generic_job_submit,
  47                 };
  48
  49 /****************************************************************************
  50 run a given print command
  51 a null terminated list of value/substitute pairs is provided
  52 for local substitution strings
  53 ****************************************************************************/
  54 static int print_run_command(int snum,char *command, int *outfd, ...)
  55 {
  56
  57         pstring syscmd;
  58         char *p, *arg;
  59         int ret;
  60         va_list ap;
  61         va_start(ap, outfd);
  62
  63         if (!command || !*command) return -1;
  64
  65         if (!VALID_SNUM(snum)) {
  66                 DEBUG(0,("Invalid snum %d for command %s\n", snum, command));
  67                 return -1;
  68         }
  69
  70         pstrcpy(syscmd, command);
  71
  72         while ((arg = va_arg(ap, char *))) {
  73                 char *value = va_arg(ap,char *);
  74                 pstring_sub(syscmd, arg, value);
  75         }
  76         va_end(ap);
  77
  78         p = PRINTERNAME(snum);
  79
  80         pstring_sub(syscmd, "%p", p);
  81         standard_sub_snum(snum,syscmd);
  82
  83         ret = smbrun(syscmd,outfd);
  84
  85         DEBUG(3,("Running the command `%s' gave %d\n",syscmd,ret));
  86
  87         return ret;
  88 }
  89
  90
  91 /****************************************************************************
  92 delete a print job
  93 ****************************************************************************/
  94 static int generic_job_delete(int snum, struct printjob *pjob)
  95 {
  96         fstring jobstr;
  97
  98         /* need to delete the spooled entry */
  99         slprintf(jobstr, sizeof(jobstr)-1, "%d", pjob->sysjob);
 100         return print_run_command(
 101                    snum,
 102                    lp_lprmcommand(snum), NULL,
 103                    "%j", jobstr,
 104                    "%T", http_timestring(pjob->starttime),
 105                    NULL);
 106 }
 107
 108 /****************************************************************************
 109 pause a job
 110 ****************************************************************************/
 111 static int generic_job_pause(int snum, struct printjob *pjob)
 112 {
 113         fstring jobstr;
 114
 115         /* need to pause the spooled entry */
 116         slprintf(jobstr, sizeof(jobstr)-1, "%d", pjob->sysjob);
 117         return print_run_command(snum,
 118                                  lp_lppausecommand(snum), NULL,
 119                                  "%j", jobstr,
 120                                  NULL);
 121 }
 122
 123 /****************************************************************************
 124 resume a job
 125 ****************************************************************************/
 126 static int generic_job_resume(int snum, struct printjob *pjob)
 127 {
 128         fstring jobstr;
 129
 130         /* need to pause the spooled entry */
 131         slprintf(jobstr, sizeof(jobstr)-1, "%d", pjob->sysjob);
 132         return print_run_command(snum,
 133                                  lp_lpresumecommand(snum), NULL,
 134                                  "%j", jobstr,
 135                                  NULL);
 136 }
 137
 138 /****************************************************************************
 139  Submit a file for printing - called from print_job_end()
 140 ****************************************************************************/
 141
 142 static int generic_job_submit(int snum, struct printjob *pjob)
 143 {
 144         int ret;
 145         pstring current_directory;
 146         pstring print_directory;
 147         char *wd, *p;
 148         pstring jobname;
 149
 150         /* we print from the directory path to give the best chance of
 151            parsing the lpq output */
 152         wd = sys_getwd(current_directory);
 153         if (!wd)
 154                 return 0;
 155
 156         pstrcpy(print_directory, pjob->filename);
 157         p = strrchr_m(print_directory,'/');
 158         if (!p)
 159                 return 0;
 160         *p++ = 0;
 161
 162         if (chdir(print_directory) != 0)
 163                 return 0;
 164
 165         pstrcpy(jobname, pjob->jobname);
 166         pstring_sub(jobname, "'", "_");
 167
 168         /* send it to the system spooler */
 169         ret = print_run_command(snum,
 170                           lp_printcommand(snum), NULL,
 171                           "%s", p,
 172                           "%J", jobname,
 173                           "%f", p,
 174                           NULL);
 175
 176         chdir(wd);
 177
 178         return ret;
 179 }
 180
 181
 182 /****************************************************************************
 183 get the current list of queued jobs
 184 ****************************************************************************/
 185 static int generic_queue_get(int snum, print_queue_struct **q, print_status_struct *status)
 186 {
 187         char **qlines;
 188         int fd;
 189         int numlines, i, qcount;
 190         print_queue_struct *queue = NULL;
 191         fstring printer_name;
 192
 193         fstrcpy(printer_name, lp_servicename(snum));
 194
 195         print_run_command(snum, lp_lpqcommand(snum), &fd, NULL);
 196
 197         if (fd == -1) {
 198                 DEBUG(5,("generic_queue_get: Can't read print queue status for printer %s\n",
 199                         printer_name ));
 200                 return 0;
 201         }
 202
 203         numlines = 0;
 204         qlines = fd_lines_load(fd, &numlines);
 205         close(fd);
 206
 207         /* turn the lpq output into a series of job structures */
 208         qcount = 0;
 209         ZERO_STRUCTP(status);
 210         if (numlines)
 211                 queue = (print_queue_struct *)malloc(sizeof(print_queue_struct)*(numlines+1));
 212
 213         if (queue) {
 214                 for (i=0; i<numlines; i++) {
 215                         /* parse the line */
 216                         if (parse_lpq_entry(snum,qlines[i],
 217                                             &queue[qcount],status,qcount==0)) {
 218                                 qcount++;
 219                         }
 220                 }
 221         }
 222         file_lines_free(qlines);
 223
 224         *q = queue;
 225         return qcount;
 226 }
 227
 228 /****************************************************************************
 229  pause a queue
 230 ****************************************************************************/
 231 static int generic_queue_pause(int snum)
 232 {
 233         return print_run_command(snum, lp_queuepausecommand(snum), NULL, NULL);
 234 }
 235
 236 /****************************************************************************
 237  resume a queue
 238 ****************************************************************************/
 239 static int generic_queue_resume(int snum)
 240 {
 241         return print_run_command(snum, lp_queueresumecommand(snum), NULL, NULL);
 242 }