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/smbd.h"
  26 #include "smbd/globals.h"
  27 #include "librpc/gen_ndr/messaging.h"
  28 #include "nt_printing.h"
  29 #include "printing/pcap.h"
  30 #include "printing/load.h"
  31 #include "auth.h"
  32
  33 /****************************************************************************
  34  purge stale printers and reload from pre-populated pcap cache
  35 **************************************************************************/
  36 void reload_printers(struct tevent_context *ev,
  37                      struct messaging_context *msg_ctx)
  38 {
  39         struct auth_serversupplied_info *session_info = NULL;
  40         struct spoolss_PrinterInfo2 *pinfo2 = NULL;
  41         int snum;
  42         int n_services = lp_numservices();
  43         int pnum = lp_servicenumber(PRINTERS_NAME);
  44         const char *pname;
  45         NTSTATUS status;
  46         bool skip = false;
  47
  48         SMB_ASSERT(pcap_cache_loaded());
  49         DEBUG(10, ("reloading printer services from pcap cache\n"));
  50
  51         status = make_session_info_system(talloc_tos(), &session_info);
  52         if (!NT_STATUS_IS_OK(status)) {
  53                 DEBUG(3, ("reload_printers: "
  54                           "Could not create system session_info\n"));
  55                 /* can't remove stale printers before we
  56                  * are fully initilized */
  57                 skip = true;
  58         }
  59
  60         /* remove stale printers */
  61         for (snum = 0; skip == false && snum < n_services; snum++) {
  62                 /* avoid removing PRINTERS_NAME or non-autoloaded printers */
  63                 if (snum == pnum || !(lp_snum_ok(snum) && lp_print_ok(snum) &&
  64                                       lp_autoloaded(snum)))
  65                         continue;
  66
  67                 pname = lp_printername(snum);
  68                 if (!pcap_printername_ok(pname)) {
  69                         DEBUG(3, ("removing stale printer %s\n", pname));
  70
  71                         if (is_printer_published(session_info, session_info,
  72                                                  msg_ctx,
  73                                                  NULL, lp_servicename(snum),
  74                                                  NULL, &pinfo2)) {
  75                                 nt_printer_publish(session_info,
  76                                                    session_info,
  77                                                    msg_ctx,
  78                                                    pinfo2,
  79                                                    DSPRINT_UNPUBLISH);
  80                                 TALLOC_FREE(pinfo2);
  81                         }
  82                         nt_printer_remove(session_info, session_info, msg_ctx,
  83                                           pname);
  84                         lp_killservice(snum);
  85                 }
  86         }
  87
  88         load_printers(ev, msg_ctx);
  89
  90         TALLOC_FREE(session_info);
  91 }
  92
  93 /****************************************************************************
  94  Reload the services file.
  95 **************************************************************************/
  96
  97 bool reload_services(struct messaging_context *msg_ctx, int smb_sock,
  98                      bool test)
  99 {
 100         bool ret;
 101
 102         if (lp_loaded()) {
 103                 char *fname = lp_configfile();
 104                 if (file_exist(fname) &&
 105                     !strcsequal(fname, get_dyn_CONFIGFILE())) {
 106                         set_dyn_CONFIGFILE(fname);
 107                         test = False;
 108                 }
 109         }
 110
 111         reopen_logs();
 112
 113         if (test && !lp_file_list_changed())
 114                 return(True);
 115
 116         lp_killunused(conn_snum_used);
 117
 118         ret = lp_load(get_dyn_CONFIGFILE(), False, False, True, True);
 119
 120         /* perhaps the config filename is now set */
 121         if (!test)
 122                 reload_services(msg_ctx, smb_sock, True);
 123
 124         reopen_logs();
 125
 126         load_interfaces();
 127
 128         if (smb_sock != -1) {
 129                 set_socket_options(smb_sock,"SO_KEEPALIVE");
 130                 set_socket_options(smb_sock, lp_socket_options());
 131         }
 132
 133         mangle_reset_cache();
 134         reset_stat_cache();
 135
 136         /* this forces service parameters to be flushed */
 137         set_current_service(NULL,0,True);
 138
 139         return(ret);
 140 }
 141
 142 /****************************************************************************
 143  Notify smbds of new printcap data
 144 **************************************************************************/
 145 void reload_pcap_change_notify(struct tevent_context *ev,
 146                                struct messaging_context *msg_ctx)
 147 {
 148         message_send_all(msg_ctx, MSG_PRINTER_PCAP, NULL, 0, NULL);
 149 }