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 bool pcap_cache_replace(const struct pcap_cache *pcache)
 101 {
 102         const struct pcap_cache *p;
 103         NTSTATUS status;
 104
 105         status = printer_list_mark_reload();
 106         if (!NT_STATUS_IS_OK(status)) {
 107                 DEBUG(0, ("Failed to mark printer list for reload!\n"));
 108                 return false;
 109         }
 110
 111         for (p = pcache; p; p = p->next) {
 112                 pcap_cache_add(p->name, p->comment);
 113         }
 114
 115         status = printer_list_clean_old();
 116         if (!NT_STATUS_IS_OK(status)) {
 117                 DEBUG(0, ("Failed to cleanup printer list!\n"));
 118                 return false;
 119         }
 120
 121         return true;
 122 }
 123
 124 void pcap_cache_reload(struct tevent_context *ev,
 125                        struct messaging_context *msg_ctx,
 126                        void (*post_cache_fill_fn)(struct tevent_context *,
 127                                                   struct messaging_context *))
 128 {
 129         const char *pcap_name = lp_printcapname();
 130         bool pcap_reloaded = False;
 131         NTSTATUS status;
 132         bool post_cache_fill_fn_handled = false;
 133
 134         DEBUG(3, ("reloading printcap cache\n"));
 135
 136         /* only go looking if no printcap name supplied */
 137         if (pcap_name == NULL || *pcap_name == 0) {
 138                 DEBUG(0, ("No printcap file name configured!\n"));
 139                 return;
 140         }
 141
 142         status = printer_list_mark_reload();
 143         if (!NT_STATUS_IS_OK(status)) {
 144                 DEBUG(0, ("Failed to mark printer list for reload!\n"));
 145                 return;
 146         }
 147
 148 #ifdef HAVE_CUPS
 149         if (strequal(pcap_name, "cups")) {
 150                 pcap_reloaded = cups_cache_reload(ev, msg_ctx,
 151                                                   post_cache_fill_fn);
 152                 /*
 153                  * cups_cache_reload() is async and calls post_cache_fill_fn()
 154                  * on successful completion
 155                  */
 156                 post_cache_fill_fn_handled = true;
 157                 goto done;
 158         }
 159 #endif
 160
 161 #ifdef HAVE_IPRINT
 162         if (strequal(pcap_name, "iprint")) {
 163                 pcap_reloaded = iprint_cache_reload();
 164                 goto done;
 165         }
 166 #endif
 167
 168 #if defined(SYSV) || defined(HPUX)
 169         if (strequal(pcap_name, "lpstat")) {
 170                 pcap_reloaded = sysv_cache_reload();
 171                 goto done;
 172         }
 173 #endif
 174
 175 #ifdef AIX
 176         if (strstr_m(pcap_name, "/qconfig") != NULL) {
 177                 pcap_reloaded = aix_cache_reload();
 178                 goto done;
 179         }
 180 #endif
 181
 182         pcap_reloaded = std_pcap_cache_reload(pcap_name);
 183
 184 done:
 185         DEBUG(3, ("reload status: %s\n", (pcap_reloaded) ? "ok" : "error"));
 186
 187         if ((pcap_reloaded) && (post_cache_fill_fn_handled == false)) {
 188                 /* cleanup old entries only if the operation was successful,
 189                  * otherwise keep around the old entries until we can
 190                  * successfuly reaload */
 191                 status = printer_list_clean_old();
 192                 if (!NT_STATUS_IS_OK(status)) {
 193                         DEBUG(0, ("Failed to cleanup printer list!\n"));
 194                 }
 195                 if (post_cache_fill_fn != NULL) {
 196                         post_cache_fill_fn(ev, msg_ctx);
 197                 }
 198         }
 199
 200         return;
 201 }
 202
 203
 204 bool pcap_printername_ok(const char *printername)
 205 {
 206         NTSTATUS status;
 207
 208         status = printer_list_get_printer(talloc_tos(), printername, NULL, 0);
 209         return NT_STATUS_IS_OK(status);
 210 }
 211
 212 /***************************************************************************
 213 run a function on each printer name in the printcap file.
 214 ***************************************************************************/
 215
 216 void pcap_printer_fn_specific(const struct pcap_cache *pc,
 217                         void (*fn)(const char *, const char *, void *),
 218                         void *pdata)
 219 {
 220         const struct pcap_cache *p;
 221
 222         for (p = pc; p != NULL; p = p->next)
 223                 fn(p->name, p->comment, pdata);
 224
 225         return;
 226 }
 227
 228 void pcap_printer_fn(void (*fn)(const char *, const char *, void *), void *pdata)
 229 {
 230         NTSTATUS status;
 231
 232         status = printer_list_run_fn(fn, pdata);
 233         if (!NT_STATUS_IS_OK(status)) {
 234                 DEBUG(3, ("Failed to run fn for all printers!\n"));
 235         }
 236         return;
 237 }