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 #include "printer_list.h"
  42
  43 struct pcap_cache {
  44         char *name;
  45         char *comment;
  46         struct pcap_cache *next;
  47 };
  48
  49 bool pcap_cache_add_specific(struct pcap_cache **ppcache, const char *name, const char *comment)
  50 {
  51         struct pcap_cache *p;
  52
  53         if (name == NULL || ((p = SMB_MALLOC_P(struct pcap_cache)) == NULL))
  54                 return false;
  55
  56         p->name = SMB_STRDUP(name);
  57         p->comment = (comment && *comment) ? SMB_STRDUP(comment) : NULL;
  58
  59         DEBUG(11,("pcap_cache_add_specific: Adding name %s info %s\n",
  60                 p->name, p->comment ? p->comment : ""));
  61
  62         p->next = *ppcache;
  63         *ppcache = p;
  64
  65         return true;
  66 }
  67
  68 void pcap_cache_destroy_specific(struct pcap_cache **pp_cache)
  69 {
  70         struct pcap_cache *p, *next;
  71
  72         for (p = *pp_cache; p != NULL; p = next) {
  73                 next = p->next;
  74
  75                 SAFE_FREE(p->name);
  76                 SAFE_FREE(p->comment);
  77                 SAFE_FREE(p);
  78         }
  79         *pp_cache = NULL;
  80 }
  81
  82 bool pcap_cache_add(const char *name, const char *comment)
  83 {
  84         NTSTATUS status;
  85         time_t t = time_mono(NULL);
  86
  87         status = printer_list_set_printer(talloc_tos(), name, comment, t);
  88         return NT_STATUS_IS_OK(status);
  89 }
  90
  91 bool pcap_cache_loaded(void)
  92 {
  93         NTSTATUS status;
  94         time_t last;
  95
  96         status = printer_list_get_last_refresh(&last);
  97         return NT_STATUS_IS_OK(status);
  98 }
  99
 100 void pcap_cache_replace(const struct pcap_cache *pcache)
 101 {
 102         const struct pcap_cache *p;
 103
 104         for (p = pcache; p; p = p->next) {
 105                 pcap_cache_add(p->name, p->comment);
 106         }
 107 }
 108
 109 void pcap_cache_reload(struct tevent_context *ev,
 110                        struct messaging_context *msg_ctx,
 111                        void (*post_cache_fill_fn)(struct tevent_context *,
 112                                                   struct messaging_context *))
 113 {
 114         const char *pcap_name = lp_printcapname();
 115         bool pcap_reloaded = False;
 116         NTSTATUS status;
 117         bool post_cache_fill_fn_handled = false;
 118
 119         DEBUG(3, ("reloading printcap cache\n"));
 120
 121         /* only go looking if no printcap name supplied */
 122         if (pcap_name == NULL || *pcap_name == 0) {
 123                 DEBUG(0, ("No printcap file name configured!\n"));
 124                 return;
 125         }
 126
 127         if (!printer_list_need_refresh()) {
 128                 /* has been just refeshed, skip */
 129                 DEBUG(5, ("Refresh just happend, skipping.\n"));
 130                 return;
 131         }
 132
 133         status = printer_list_mark_reload();
 134         if (!NT_STATUS_IS_OK(status)) {
 135                 DEBUG(0, ("Failed to mark printer list for reload!\n"));
 136                 return;
 137         }
 138
 139 #ifdef HAVE_CUPS
 140         if (strequal(pcap_name, "cups")) {
 141                 pcap_reloaded = cups_cache_reload(ev, msg_ctx,
 142                                                   post_cache_fill_fn);
 143                 /*
 144                  * cups_cache_reload() is async and calls post_cache_fill_fn()
 145                  * on successful completion
 146                  */
 147                 post_cache_fill_fn_handled = true;
 148                 goto done;
 149         }
 150 #endif
 151
 152 #ifdef HAVE_IPRINT
 153         if (strequal(pcap_name, "iprint")) {
 154                 pcap_reloaded = iprint_cache_reload();
 155                 goto done;
 156         }
 157 #endif
 158
 159 #if defined(SYSV) || defined(HPUX)
 160         if (strequal(pcap_name, "lpstat")) {
 161                 pcap_reloaded = sysv_cache_reload();
 162                 goto done;
 163         }
 164 #endif
 165
 166 #ifdef AIX
 167         if (strstr_m(pcap_name, "/qconfig") != NULL) {
 168                 pcap_reloaded = aix_cache_reload();
 169                 goto done;
 170         }
 171 #endif
 172
 173         pcap_reloaded = std_pcap_cache_reload(pcap_name);
 174
 175 done:
 176         DEBUG(3, ("reload status: %s\n", (pcap_reloaded) ? "ok" : "error"));
 177
 178         if (pcap_reloaded) {
 179                 /* cleanup old entries only if the operation was successful,
 180                  * otherwise keep around the old entries until we can
 181                  * successfuly reaload */
 182                 status = printer_list_clean_old();
 183                 if (!NT_STATUS_IS_OK(status)) {
 184                         DEBUG(0, ("Failed to cleanup printer list!\n"));
 185                 }
 186                 if ((post_cache_fill_fn_handled == false)
 187                  && (post_cache_fill_fn != NULL)) {
 188                         post_cache_fill_fn(ev, msg_ctx);
 189                 }
 190         }
 191
 192         return;
 193 }
 194
 195
 196 bool pcap_printername_ok(const char *printername)
 197 {
 198         NTSTATUS status;
 199
 200         status = printer_list_get_printer(talloc_tos(), printername, NULL, 0);
 201         return NT_STATUS_IS_OK(status);
 202 }
 203
 204 /***************************************************************************
 205 run a function on each printer name in the printcap file.
 206 ***************************************************************************/
 207
 208 void pcap_printer_fn_specific(const struct pcap_cache *pc,
 209                         void (*fn)(const char *, const char *, void *),
 210                         void *pdata)
 211 {
 212         const struct pcap_cache *p;
 213
 214         for (p = pc; p != NULL; p = p->next)
 215                 fn(p->name, p->comment, pdata);
 216
 217         return;
 218 }
 219
 220 void pcap_printer_fn(void (*fn)(const char *, const char *, void *), void *pdata)
 221 {
 222         NTSTATUS status;
 223
 224         status = printer_list_run_fn(fn, pdata);
 225         if (!NT_STATUS_IS_OK(status)) {
 226                 DEBUG(3, ("Failed to run fn for all printers!\n"));
 227         }
 228         return;
 229 }