Fix empty input fields in SWAT; [#5515].
[Samba/bb.git] / source3 / utils / net_dns.c
blob14d45e2b0fcf4b9a6596fa55cf7ce065a88f3e39
2 /*
3 Samba Unix/Linux Dynamic DNS Update
4 net ads commands
6 Copyright (C) Krishna Ganugapati (krishnag@centeris.com) 2006
7 Copyright (C) Gerald Carter 2006
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 3 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "includes.h"
24 #include "utils/net.h"
25 #include "dns.h"
27 #if defined(WITH_DNS_UPDATES)
30 * Silly prototype to get rid of a warning
33 DNS_ERROR DoDNSUpdate(char *pszServerName,
34 const char *pszDomainName, const char *pszHostName,
35 const struct sockaddr_storage *sslist,
36 size_t num_addrs );
38 /*********************************************************************
39 *********************************************************************/
41 DNS_ERROR DoDNSUpdate(char *pszServerName,
42 const char *pszDomainName, const char *pszHostName,
43 const struct sockaddr_storage *sslist, size_t num_addrs )
45 DNS_ERROR err;
46 struct dns_connection *conn;
47 TALLOC_CTX *mem_ctx;
48 OM_uint32 minor;
49 struct dns_update_request *req, *resp;
51 if ( (num_addrs <= 0) || !sslist ) {
52 return ERROR_DNS_INVALID_PARAMETER;
55 if (!(mem_ctx = talloc_init("DoDNSUpdate"))) {
56 return ERROR_DNS_NO_MEMORY;
59 err = dns_open_connection( pszServerName, DNS_TCP, mem_ctx, &conn );
60 if (!ERR_DNS_IS_OK(err)) {
61 goto error;
65 * Probe if everything's fine
68 err = dns_create_probe(mem_ctx, pszDomainName, pszHostName,
69 num_addrs, sslist, &req);
70 if (!ERR_DNS_IS_OK(err)) goto error;
72 err = dns_update_transaction(mem_ctx, conn, req, &resp);
73 if (!ERR_DNS_IS_OK(err)) goto error;
75 if (dns_response_code(resp->flags) == DNS_NO_ERROR) {
76 TALLOC_FREE(mem_ctx);
77 return ERROR_DNS_SUCCESS;
81 * First try without signing
84 err = dns_create_update_request(mem_ctx, pszDomainName, pszHostName,
85 sslist, num_addrs, &req);
86 if (!ERR_DNS_IS_OK(err)) goto error;
88 err = dns_update_transaction(mem_ctx, conn, req, &resp);
89 if (!ERR_DNS_IS_OK(err)) goto error;
91 if (dns_response_code(resp->flags) == DNS_NO_ERROR) {
92 TALLOC_FREE(mem_ctx);
93 return ERROR_DNS_SUCCESS;
97 * Okay, we have to try with signing
100 gss_ctx_id_t gss_context;
101 char *keyname;
103 if (!(keyname = dns_generate_keyname( mem_ctx ))) {
104 err = ERROR_DNS_NO_MEMORY;
105 goto error;
108 err = dns_negotiate_sec_ctx( pszDomainName, pszServerName,
109 keyname, &gss_context, DNS_SRV_ANY );
111 /* retry using the Windows 2000 DNS hack */
112 if (!ERR_DNS_IS_OK(err)) {
113 err = dns_negotiate_sec_ctx( pszDomainName, pszServerName,
114 keyname, &gss_context,
115 DNS_SRV_WIN2000 );
118 if (!ERR_DNS_IS_OK(err))
119 goto error;
122 err = dns_sign_update(req, gss_context, keyname,
123 "gss.microsoft.com", time(NULL), 3600);
125 gss_delete_sec_context(&minor, &gss_context, GSS_C_NO_BUFFER);
127 if (!ERR_DNS_IS_OK(err)) goto error;
129 err = dns_update_transaction(mem_ctx, conn, req, &resp);
130 if (!ERR_DNS_IS_OK(err)) goto error;
132 err = (dns_response_code(resp->flags) == DNS_NO_ERROR) ?
133 ERROR_DNS_SUCCESS : ERROR_DNS_UPDATE_FAILED;
137 error:
138 TALLOC_FREE(mem_ctx);
139 return err;
142 /*********************************************************************
143 *********************************************************************/
145 int get_my_ip_address( struct sockaddr_storage **pp_ss )
148 struct iface_struct nics[MAX_INTERFACES];
149 int i, n;
150 struct sockaddr_storage *list = NULL;
151 int count = 0;
153 /* find the first non-loopback address from our list of interfaces */
155 n = get_interfaces(nics, MAX_INTERFACES);
157 if (n <= 0) {
158 return -1;
161 if ( (list = SMB_MALLOC_ARRAY( struct sockaddr_storage, n )) == NULL ) {
162 return -1;
165 for ( i=0; i<n; i++ ) {
166 if (is_loopback_addr(&nics[i].ip)) {
167 continue;
169 #if defined(HAVE_IPV6)
170 if ((nics[i].ip.ss_family == AF_INET6)) {
171 memcpy(&list[count++], &nics[i].ip,
172 sizeof(struct sockaddr_storage));
173 } else
174 #endif
175 if (nics[i].ip.ss_family == AF_INET) {
176 memcpy(&list[count++], &nics[i].ip,
177 sizeof(struct sockaddr_storage));
180 *pp_ss = list;
182 return count;
186 * Silly prototype to get rid of a warning
189 DNS_ERROR do_gethostbyname(const char *server, const char *host);
191 DNS_ERROR do_gethostbyname(const char *server, const char *host)
193 struct dns_connection *conn;
194 struct dns_request *req, *resp;
195 DNS_ERROR err;
197 err = dns_open_connection(server, DNS_UDP, NULL, &conn);
198 if (!ERR_DNS_IS_OK(err)) goto error;
200 err = dns_create_query(conn, host, QTYPE_A, DNS_CLASS_IN, &req);
201 if (!ERR_DNS_IS_OK(err)) goto error;
203 err = dns_transaction(conn, conn, req, &resp);
205 error:
206 TALLOC_FREE(conn);
207 return err;
210 #endif /* defined(WITH_DNS_UPDATES) */