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 #include "printing/load.h"
  30
  31 /****************************************************************************
  32  purge stale printers and reload from pre-populated pcap cache
  33 **************************************************************************/
  34 void reload_printers(struct tevent_context *ev,
  35                      struct messaging_context *msg_ctx)
  36 {
  37         struct auth_serversupplied_info *session_info = NULL;
  38         struct spoolss_PrinterInfo2 *pinfo2 = NULL;
  39         int snum;
  40         int n_services = lp_numservices();
  41         int pnum = lp_servicenumber(PRINTERS_NAME);
  42         const char *pname;
  43         NTSTATUS status;
  44         bool skip = false;
  45
  46         SMB_ASSERT(pcap_cache_loaded());
  47         DEBUG(10, ("reloading printer services from pcap cache\n"));
  48
  49         status = make_session_info_system(talloc_tos(), &session_info);
  50         if (!NT_STATUS_IS_OK(status)) {
  51                 DEBUG(3, ("reload_printers: "
  52                           "Could not create system session_info\n"));
  53                 /* can't remove stale printers before we
  54                  * are fully initilized */
  55                 skip = true;
  56         }
  57
  58         /* remove stale printers */
  59         for (snum = 0; skip == false && snum < n_services; snum++) {
  60                 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
  61                 if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
  62                                       lp_autoloaded(snum)))
  63                         continue;
  64
  65                 pname = lp_printername(snum);
  66                 if (!pcap_printername_ok(pname)) {
  67                         DEBUG(3, ("removing stale printer %s\n", pname));
  68
  69                         if (is_printer_published(session_info, session_info,
  70                                                  msg_ctx,
  71                                                  NULL, lp_servicename(snum),
  72                                                  NULL, &pinfo2)) {
  73                                 nt_printer_publish(session_info,
  74                                                    session_info,
  75                                                    msg_ctx,
  76                                                    pinfo2,
  77                                                    DSPRINT_UNPUBLISH);
  78                                 TALLOC_FREE(pinfo2);
  79                         }
  80                         nt_printer_remove(session_info, session_info, msg_ctx,
  81                                           pname);
  82                         lp_killservice(snum);
  83                 }
  84         }
  85
  86         load_printers(ev, msg_ctx);
  87
  88         TALLOC_FREE(session_info);
  89 }
  90
  91 /****************************************************************************
  92  Reload the services file.
  93 **************************************************************************/
  94
  95 bool reload_services(struct messaging_context *msg_ctx, int smb_sock,
  96                      bool test)
  97 {
  98         bool ret;
  99
 100         if (lp_loaded()) {
 101                 char *fname = lp_configfile();
 102                 if (file_exist(fname) &&
 103                     !strcsequal(fname, get_dyn_CONFIGFILE())) {
 104                         set_dyn_CONFIGFILE(fname);
 105                         test = False;
 106                 }
 107         }
 108
 109         reopen_logs();
 110
 111         if (test && !lp_file_list_changed())
 112                 return(True);
 113
 114         lp_killunused(conn_snum_used);
 115
 116         ret = lp_load(get_dyn_CONFIGFILE(), False, False, True, True);
 117
 118         /* perhaps the config filename is now set */
 119         if (!test)
 120                 reload_services(msg_ctx, smb_sock, True);
 121
 122         reopen_logs();
 123
 124         load_interfaces();
 125
 126         if (smb_sock != -1) {
 127                 set_socket_options(smb_sock,"SO_KEEPALIVE");
 128                 set_socket_options(smb_sock, lp_socket_options());
 129         }
 130
 131         mangle_reset_cache();
 132         reset_stat_cache();
 133
 134         /* this forces service parameters to be flushed */
 135         set_current_service(NULL,0,True);
 136
 137         return(ret);
 138 }
 139
 140 /****************************************************************************
 141  Notify smbds of new printcap data
 142 **************************************************************************/
 143 void reload_pcap_change_notify(struct tevent_context *ev,
 144                                struct messaging_context *msg_ctx)
 145 {
 146         message_send_all(msg_ctx, MSG_PRINTER_PCAP, NULL, 0, NULL);
 147 }