source/utils/net_dns.c

   1
   2 /*
   3    Samba Unix/Linux Dynamic DNS Update
   4    net ads commands
   5
   6    Copyright (C) Krishna Ganugapati (krishnag@centeris.com)         2006
   7    Copyright (C) Gerald Carter                                      2006
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25 #include "utils/net.h"
  26 #include "dns.h"
  27
  28 #if defined(WITH_DNS_UPDATES)
  29
  30 /*********************************************************************
  31 *********************************************************************/
  32
  33 int DoDNSUpdate( char *pszServerName, const char *pszDomainName,
  34                  char *pszHostName, struct in_addr *iplist, int num_addrs )
  35 {
  36         int32 dwError = 0;
  37         DNS_ERROR dns_status;
  38         HANDLE hDNSServer = ( HANDLE ) NULL;
  39         int32 dwResponseCode = 0;
  40         DNS_UPDATE_RESPONSE *pDNSUpdateResponse = NULL;
  41 #if 0
  42         DNS_UPDATE_RESPONSE *pDNSSecureUpdateResponse = NULL;
  43 #endif
  44
  45         if ( (num_addrs <= 0) || !iplist ) {
  46                 return -1;
  47         }
  48
  49         dns_status = DNSOpen( pszServerName, DNS_TCP, &hDNSServer );
  50         BAIL_ON_DNS_ERROR( dns_status );
  51
  52         dwError = DNSSendUpdate( hDNSServer, pszDomainName, pszHostName,
  53                                  iplist, num_addrs, &pDNSUpdateResponse );
  54         BAIL_ON_ERROR( dwError );
  55
  56         dwError = DNSUpdateGetResponseCode( pDNSUpdateResponse,
  57                                             &dwResponseCode );
  58         if ( dwResponseCode == DNS_REFUSED ) {
  59                 dwError = -1;
  60         }
  61         BAIL_ON_ERROR( dwError );
  62
  63 cleanup:
  64         return dwError;
  65
  66 error:
  67         goto cleanup;
  68 }
  69
  70 /*********************************************************************
  71 *********************************************************************/
  72
  73 int get_my_ip_address( struct in_addr **ips )
  74 {
  75         struct iface_struct nics[MAX_INTERFACES];
  76         int i, n;
  77         struct in_addr loopback_ip = *interpret_addr2("127.0.0.1");
  78         struct in_addr *list;
  79         int count = 0;
  80
  81         /* find the first non-loopback address from our list of interfaces */
  82
  83         n = get_interfaces(nics, MAX_INTERFACES);
  84
  85         if ( (list = SMB_MALLOC_ARRAY( struct in_addr, n )) == NULL ) {
  86                 return -1;
  87         }
  88
  89         for ( i=0; i<n; i++ ) {
  90                 if ( nics[i].ip.s_addr != loopback_ip.s_addr ) {
  91                         memcpy( &list[count++], &nics[i].ip, sizeof( struct in_addr ) );
  92                 }
  93         }
  94         *ips = list;
  95
  96         return count;
  97 }
  98
  99 #endif  /* defined(WITH_DNS_UPDATES) */