source3/printing/load.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    load printer lists
   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 3 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, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "printing/pcap.h"
  22 #include "printing/printer_list.h"
  23 #include "printing/load.h"
  24 #include "lib/param/loadparm.h"
  25
  26 /***************************************************************************
  27 auto-load some homes and printer services
  28 ***************************************************************************/
  29 static void add_auto_printers(void)
  30 {
  31         const struct loadparm_substitution *lp_sub =
  32                 loadparm_s3_global_substitution();
  33         const char *p;
  34         int pnum = lp_servicenumber(PRINTERS_NAME);
  35         char *str;
  36         char *saveptr;
  37         char *auto_serv = NULL;
  38
  39         if (pnum < 0)
  40                 if (process_registry_service(PRINTERS_NAME))
  41                         pnum = lp_servicenumber(PRINTERS_NAME);
  42
  43         if (pnum < 0)
  44                 return;
  45
  46         auto_serv = lp_auto_services(talloc_tos(), lp_sub);
  47         str = SMB_STRDUP(auto_serv);
  48         TALLOC_FREE(auto_serv);
  49         if (str == NULL) {
  50                 return;
  51         }
  52
  53         for (p = strtok_r(str, LIST_SEP, &saveptr); p;
  54              p = strtok_r(NULL, LIST_SEP, &saveptr)) {
  55                 if (lp_servicenumber(p) >= 0)
  56                         continue;
  57
  58                 if (printer_list_printername_exists(p))
  59                         lp_add_printer(p, pnum);
  60         }
  61
  62         SAFE_FREE(str);
  63 }
  64
  65 /***************************************************************************
  66 load automatic printer services from pre-populated pcap cache
  67 ***************************************************************************/
  68 void load_printers(void)
  69 {
  70         NTSTATUS status;
  71
  72         if (!pcap_cache_loaded(NULL)) {
  73                 return;
  74         }
  75
  76         add_auto_printers();
  77
  78         if (!lp_load_printers()) {
  79                 return;
  80         }
  81
  82         /*
  83          * Do not add printers from pcap, if we don't have a [printers] share.
  84          */
  85         if (lp_servicenumber(PRINTERS_NAME) < 0) {
  86                 return;
  87         }
  88
  89         status = printer_list_read_run_fn(lp_add_one_printer, NULL);
  90         if (!NT_STATUS_IS_OK(status)) {
  91                 DBG_NOTICE("printer_list_read_run_fn failed: %s\n",
  92                            nt_errstr(status));
  93         }
  94 }
  95
  96 bool pcap_cache_loaded(time_t *_last_change)
  97 {
  98         NTSTATUS status;
  99         time_t last;
 100
 101         status = printer_list_get_last_refresh(&last);
 102         if (!NT_STATUS_IS_OK(status)) {
 103                 return false;
 104         }
 105         if (_last_change != NULL) {
 106                 *_last_change = last;
 107         }
 108         return true;
 109 }