source3/printing/pcap.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    printcap parsing
   4    Copyright (C) Karl Auer 1993-1998
   5
   6    Re-working by Martin Kiff, 1994
   7
   8    Re-written again by Andrew Tridgell
   9
  10    Modified for SVID support by Norm Jacobs, 1997
  11
  12    Modified for CUPS support by Michael Sweet, 1999
  13
  14    This program is free software; you can redistribute it and/or modify
  15    it under the terms of the GNU General Public License as published by
  16    the Free Software Foundation; either version 3 of the License, or
  17    (at your option) any later version.
  18
  19    This program is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22    GNU General Public License for more details.
  23
  24    You should have received a copy of the GNU General Public License
  25    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  26 */
  27
  28 /*
  29  *  Modified to call SVID/XPG4 support if printcap name is set to "lpstat"
  30  *  in smb.conf under Solaris.
  31  *
  32  *  Modified to call CUPS support if printcap name is set to "cups"
  33  *  in smb.conf.
  34  *
  35  *  Modified to call iPrint support if printcap name is set to "iprint"
  36  *  in smb.conf.
  37  */
  38
  39 #include "includes.h"
  40 #include "printing/pcap.h"
  41
  42 struct pcap_cache {
  43         char *name;
  44         char *comment;
  45         struct pcap_cache *next;
  46 };
  47
  48 /* The systemwide printcap cache. */
  49 static struct pcap_cache *pcap_cache = NULL;
  50
  51 bool pcap_cache_add_specific(struct pcap_cache **ppcache, const char *name, const char *comment)
  52 {
  53         struct pcap_cache *p;
  54
  55         if (name == NULL || ((p = SMB_MALLOC_P(struct pcap_cache)) == NULL))
  56                 return false;
  57
  58         p->name = SMB_STRDUP(name);
  59         p->comment = (comment && *comment) ? SMB_STRDUP(comment) : NULL;
  60
  61         DEBUG(11,("pcap_cache_add_specific: Adding name %s info %s\n",
  62                 p->name, p->comment ? p->comment : ""));
  63
  64         p->next = *ppcache;
  65         *ppcache = p;
  66
  67         return true;
  68 }
  69
  70 void pcap_cache_destroy_specific(struct pcap_cache **pp_cache)
  71 {
  72         struct pcap_cache *p, *next;
  73
  74         for (p = *pp_cache; p != NULL; p = next) {
  75                 next = p->next;
  76
  77                 SAFE_FREE(p->name);
  78                 SAFE_FREE(p->comment);
  79                 SAFE_FREE(p);
  80         }
  81         *pp_cache = NULL;
  82 }
  83
  84 bool pcap_cache_add(const char *name, const char *comment)
  85 {
  86         return pcap_cache_add_specific(&pcap_cache, name, comment);
  87 }
  88
  89 bool pcap_cache_loaded(void)
  90 {
  91         return (pcap_cache != NULL);
  92 }
  93
  94 void pcap_cache_replace(const struct pcap_cache *pcache)
  95 {
  96         const struct pcap_cache *p;
  97
  98         pcap_cache_destroy_specific(&pcap_cache);
  99         for (p = pcache; p; p = p->next) {
 100                 pcap_cache_add(p->name, p->comment);
 101         }
 102 }
 103
 104 void pcap_cache_reload(struct tevent_context *ev,
 105                        struct messaging_context *msg_ctx)
 106 {
 107         const char *pcap_name = lp_printcapname();
 108         bool pcap_reloaded = False;
 109         struct pcap_cache *tmp_cache = NULL;
 110
 111         DEBUG(3, ("reloading printcap cache\n"));
 112
 113         /* only go looking if no printcap name supplied */
 114         if (pcap_name == NULL || *pcap_name == 0) {
 115                 DEBUG(0, ("No printcap file name configured!\n"));
 116                 return;
 117         }
 118
 119         tmp_cache = pcap_cache;
 120         pcap_cache = NULL;
 121
 122 #ifdef HAVE_CUPS
 123         if (strequal(pcap_name, "cups")) {
 124                 pcap_reloaded = cups_cache_reload(ev, msg_ctx);
 125                 goto done;
 126         }
 127 #endif
 128
 129 #ifdef HAVE_IPRINT
 130         if (strequal(pcap_name, "iprint")) {
 131                 pcap_reloaded = iprint_cache_reload();
 132                 goto done;
 133         }
 134 #endif
 135
 136 #if defined(SYSV) || defined(HPUX)
 137         if (strequal(pcap_name, "lpstat")) {
 138                 pcap_reloaded = sysv_cache_reload();
 139                 goto done;
 140         }
 141 #endif
 142
 143 #ifdef AIX
 144         if (strstr_m(pcap_name, "/qconfig") != NULL) {
 145                 pcap_reloaded = aix_cache_reload();
 146                 goto done;
 147         }
 148 #endif
 149
 150         pcap_reloaded = std_pcap_cache_reload(pcap_name);
 151
 152 done:
 153         DEBUG(3, ("reload status: %s\n", (pcap_reloaded) ? "ok" : "error"));
 154
 155         if (pcap_reloaded)
 156                 pcap_cache_destroy_specific(&tmp_cache);
 157         else {
 158                 pcap_cache_destroy_specific(&pcap_cache);
 159                 pcap_cache = tmp_cache;
 160         }
 161
 162         return;
 163 }
 164
 165
 166 bool pcap_printername_ok(const char *printername)
 167 {
 168         struct pcap_cache *p;
 169
 170         for (p = pcap_cache; p != NULL; p = p->next)
 171                 if (strequal(p->name, printername))
 172                         return True;
 173
 174         return False;
 175 }
 176
 177 /***************************************************************************
 178 run a function on each printer name in the printcap file.
 179 ***************************************************************************/
 180
 181 void pcap_printer_fn_specific(const struct pcap_cache *pc,
 182                         void (*fn)(const char *, const char *, void *),
 183                         void *pdata)
 184 {
 185         const struct pcap_cache *p;
 186
 187         for (p = pc; p != NULL; p = p->next)
 188                 fn(p->name, p->comment, pdata);
 189
 190         return;
 191 }
 192
 193 void pcap_printer_fn(void (*fn)(const char *, const char *, void *), void *pdata)
 194 {
 195         pcap_printer_fn_specific(pcap_cache, fn, pdata);
 196 }