2 Unix SMB/Netbios implementation.
5 Winbind daemon - WINS related functions
7 Copyright (C) Andrew Tridgell 1999
8 Copyright (C) Herb Lewis 2002
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 2 of the License, or
13 (at your option) any later version.
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.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 /* Use our own create socket code so we don't recurse.... */
29 static int wins_lookup_open_socket_in(void)
31 struct sockaddr_in sock;
35 memset((char *)&sock,'\0',sizeof(sock));
37 #ifdef HAVE_SOCK_SIN_LEN
38 sock.sin_len = sizeof(sock);
41 sock.sin_family = AF_INET;
42 sock.sin_addr.s_addr = interpret_addr("0.0.0.0");
43 res = socket(AF_INET, SOCK_DGRAM, 0);
47 setsockopt(res,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
49 setsockopt(res,SOL_SOCKET,SO_REUSEPORT,(char *)&val,sizeof(val));
50 #endif /* SO_REUSEPORT */
52 /* now we've got a socket - we need to bind it */
54 if (bind(res, (struct sockaddr * ) &sock,sizeof(sock)) < 0) {
59 set_socket_options(res,"SO_BROADCAST");
65 static struct node_status *lookup_byaddr_backend(char *addr, int *count)
69 struct nmb_name nname;
70 struct node_status *status;
72 fd = wins_lookup_open_socket_in();
76 make_nmb_name(&nname, "*", 0);
77 ip = *interpret_addr2(addr);
78 status = node_status_query(fd,&nname,ip, count);
84 static struct in_addr *lookup_byname_backend(const char *name, int *count)
87 struct in_addr *ret = NULL;
93 fd = wins_lookup_open_socket_in();
99 ret = name_query(fd,name,0x20,False,True, p, count);
103 if (lp_wins_support()) {
104 /* we are our own WINS server */
105 ret = name_query(fd,name,0x20,False,True, *interpret_addr2("127.0.0.1"), count);
109 /* uggh, we have to broadcast to each interface in turn */
110 for (j=iface_count() - 1;
113 struct in_addr *bcast = iface_n_bcast(j);
114 ret = name_query(fd,name,0x20,True,True,*bcast,count);
124 /* Get hostname from IP */
126 enum winbindd_result winbindd_wins_byip(struct winbindd_cli_state *state)
129 int i, count, len, size;
130 struct node_status *status;
132 DEBUG(3, ("[%5d]: wins_byip %s\n", state->pid,
133 state->request.data.name));
136 len = sizeof(response) - 2;
138 if ((status = lookup_byaddr_backend(state->request.data.name, &count))){
139 size = strlen(state->request.data.name) + 1;
142 return WINBINDD_ERROR;
145 safe_strcat(response,state->request.data.name,size);
146 safe_strcat(response,"\t",1);
147 for (i = 0; i < count; i++) {
148 /* ignore group names */
149 if (status[i].flags & 0x80) continue;
150 if (status[i].type == 0x20) {
151 size = sizeof(status[i].name) + 1;
154 return WINBINDD_ERROR;
157 safe_strcat(response, status[i].name, size);
158 safe_strcat(response, " ", 1);
161 response[strlen(response)-1] = '\n';
164 fstrcpy(state->response.data.name.name,response);
168 /* Get IP from hostname */
170 enum winbindd_result winbindd_wins_byname(struct winbindd_cli_state *state)
172 struct in_addr *ip_list;
173 int i, count, len, size;
177 DEBUG(3, ("[%5d]: wins_byname %s\n", state->pid,
178 state->request.data.name));
181 len = sizeof(response) - 2;
183 if ((ip_list = lookup_byname_backend(state->request.data.name,&count))){
184 for (i = count; i ; i--) {
185 addr = inet_ntoa(ip_list[i-1]);
186 size = strlen(addr) + 1;
189 return WINBINDD_ERROR;
193 response[strlen(response)-1] = ' ';
194 safe_strcat(response,addr,size);
195 safe_strcat(response,"\t",1);
197 size = strlen(state->request.data.name) + 1;
200 return WINBINDD_ERROR;
202 safe_strcat(response,state->request.data.name,size);
203 safe_strcat(response,"\n",1);
206 return WINBINDD_ERROR;
208 fstrcpy(state->response.data.name.name,response);