source3/smbd/server_reload.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Main SMB server routines
   4    Copyright (C) Andrew Tridgell                1992-1998
   5    Copyright (C) Martin Pool                    2002
   6    Copyright (C) Jelmer Vernooij                2002-2003
   7    Copyright (C) Volker Lendecke                1993-2007
   8    Copyright (C) Jeremy Allison                 1993-2007
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "smbd/globals.h"
  26 #include "librpc/gen_ndr/messaging.h"
  27 #include "nt_printing.h"
  28 #include "printing/pcap.h"
  29
  30 /****************************************************************************
  31  purge stale printers and reload from pre-populated pcap cache
  32 **************************************************************************/
  33 void reload_printers(struct tevent_context *ev,
  34                      struct messaging_context *msg_ctx)
  35 {
  36         struct auth_serversupplied_info *session_info = NULL;
  37         struct spoolss_PrinterInfo2 *pinfo2 = NULL;
  38         int snum;
  39         int n_services = lp_numservices();
  40         int pnum = lp_servicenumber(PRINTERS_NAME);
  41         const char *pname;
  42         NTSTATUS status;
  43         bool skip = false;
  44
  45         SMB_ASSERT(pcap_cache_loaded());
  46         DEBUG(10, ("reloading printer services from pcap cache\n"));
  47
  48         status = make_session_info_system(talloc_tos(), &session_info);
  49         if (!NT_STATUS_IS_OK(status)) {
  50                 DEBUG(3, ("reload_printers: "
  51                           "Could not create system session_info\n"));
  52                 /* can't remove stale printers before we
  53                  * are fully initilized */
  54                 skip = true;
  55         }
  56
  57         /* remove stale printers */
  58         for (snum = 0; skip == false && snum < n_services; snum++) {
  59                 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
  60                 if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
  61                                       lp_autoloaded(snum)))
  62                         continue;
  63
  64                 pname = lp_printername(snum);
  65                 if (!pcap_printername_ok(pname)) {
  66                         DEBUG(3, ("removing stale printer %s\n", pname));
  67
  68                         if (is_printer_published(session_info, session_info,
  69                                                  msg_ctx,
  70                                                  NULL, lp_servicename(snum),
  71                                                  NULL, &pinfo2)) {
  72                                 nt_printer_publish(session_info,
  73                                                    session_info,
  74                                                    msg_ctx,
  75                                                    pinfo2,
  76                                                    DSPRINT_UNPUBLISH);
  77                                 TALLOC_FREE(pinfo2);
  78                         }
  79                         nt_printer_remove(session_info, session_info, msg_ctx,
  80                                           pname);
  81                         lp_killservice(snum);
  82                 }
  83         }
  84
  85         load_printers(ev, msg_ctx);
  86
  87         TALLOC_FREE(session_info);
  88 }
  89
  90 /****************************************************************************
  91  Reload the services file.
  92 **************************************************************************/
  93
  94 bool reload_services(struct messaging_context *msg_ctx, int smb_sock,
  95                      bool test)
  96 {
  97         bool ret;
  98
  99         if (lp_loaded()) {
 100                 char *fname = lp_configfile();
 101                 if (file_exist(fname) &&
 102                     !strcsequal(fname, get_dyn_CONFIGFILE())) {
 103                         set_dyn_CONFIGFILE(fname);
 104                         test = False;
 105                 }
 106         }
 107
 108         reopen_logs();
 109
 110         if (test && !lp_file_list_changed())
 111                 return(True);
 112
 113         lp_killunused(conn_snum_used);
 114
 115         ret = lp_load(get_dyn_CONFIGFILE(), False, False, True, True);
 116
 117         /* perhaps the config filename is now set */
 118         if (!test)
 119                 reload_services(msg_ctx, smb_sock, True);
 120
 121         reopen_logs();
 122
 123         load_interfaces();
 124
 125         if (smb_sock != -1) {
 126                 set_socket_options(smb_sock,"SO_KEEPALIVE");
 127                 set_socket_options(smb_sock, lp_socket_options());
 128         }
 129
 130         mangle_reset_cache();
 131         reset_stat_cache();
 132
 133         /* this forces service parameters to be flushed */
 134         set_current_service(NULL,0,True);
 135
 136         return(ret);
 137 }
 138
 139 /****************************************************************************
 140  Notify smbds of new printcap data
 141 **************************************************************************/
 142 void reload_pcap_change_notify(struct tevent_context *ev,
 143                                struct messaging_context *msg_ctx)
 144 {
 145         message_send_all(msg_ctx, MSG_PRINTER_PCAP, NULL, 0, NULL);
 146 }