2 Unix SMB/CIFS implementation.
4 Winbind daemon - WINS related functions
6 Copyright (C) Andrew Tridgell 1999
7 Copyright (C) Herb Lewis 2002
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.
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, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #define DBGC_CLASS DBGC_WINBIND
29 /* Use our own create socket code so we don't recurse.... */
31 static int wins_lookup_open_socket_in(void)
33 struct sockaddr_in sock;
37 memset((char *)&sock,'\0',sizeof(sock));
39 #ifdef HAVE_SOCK_SIN_LEN
40 sock.sin_len = sizeof(sock);
43 sock.sin_family = AF_INET;
44 sock.sin_addr.s_addr = interpret_addr("0.0.0.0");
45 res = socket(AF_INET, SOCK_DGRAM, 0);
49 setsockopt(res,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
51 setsockopt(res,SOL_SOCKET,SO_REUSEPORT,(char *)&val,sizeof(val));
52 #endif /* SO_REUSEPORT */
54 /* now we've got a socket - we need to bind it */
56 if (bind(res, (struct sockaddr * ) &sock,sizeof(sock)) < 0) {
61 set_socket_options(res,"SO_BROADCAST");
67 static struct node_status *lookup_byaddr_backend(char *addr, int *count)
71 struct nmb_name nname;
72 struct node_status *status;
74 fd = wins_lookup_open_socket_in();
78 make_nmb_name(&nname, "*", 0);
79 ip = *interpret_addr2(addr);
80 status = node_status_query(fd,&nname,ip, count);
86 static struct in_addr *lookup_byname_backend(const char *name, int *count)
89 struct in_addr *ret = NULL;
94 /* always try with wins first */
95 if (resolve_wins(name,0x20,&ret,count)) {
99 fd = wins_lookup_open_socket_in();
104 /* uggh, we have to broadcast to each interface in turn */
105 for (j=iface_count() - 1;
108 struct in_addr *bcast = iface_n_bcast(j);
109 ret = name_query(fd,name,0x20,True,True,*bcast,count, &flags, NULL);
117 /* Get hostname from IP */
119 enum winbindd_result winbindd_wins_byip(struct winbindd_cli_state *state)
122 int i, count, maxlen, size;
123 struct node_status *status;
125 /* Ensure null termination */
126 state->request.data.winsreq[sizeof(state->request.data.winsreq)-1]='\0';
128 DEBUG(3, ("[%5d]: wins_byip %s\n", state->pid,
129 state->request.data.winsreq));
132 maxlen = sizeof(response) - 1;
134 if ((status = lookup_byaddr_backend(state->request.data.winsreq, &count))){
135 size = strlen(state->request.data.winsreq);
138 return WINBINDD_ERROR;
140 fstrcat(response,state->request.data.winsreq);
141 fstrcat(response,"\t");
142 for (i = 0; i < count; i++) {
143 /* ignore group names */
144 if (status[i].flags & 0x80) continue;
145 if (status[i].type == 0x20) {
146 size = sizeof(status[i].name) + strlen(response);
149 return WINBINDD_ERROR;
151 fstrcat(response, status[i].name);
152 fstrcat(response, " ");
155 /* make last character a newline */
156 response[strlen(response)-1] = '\n';
159 fstrcpy(state->response.data.winsresp,response);
163 /* Get IP from hostname */
165 enum winbindd_result winbindd_wins_byname(struct winbindd_cli_state *state)
167 struct in_addr *ip_list;
168 int i, count, maxlen, size;
172 /* Ensure null termination */
173 state->request.data.winsreq[sizeof(state->request.data.winsreq)-1]='\0';
175 DEBUG(3, ("[%5d]: wins_byname %s\n", state->pid,
176 state->request.data.winsreq));
179 maxlen = sizeof(response) - 1;
181 if ((ip_list = lookup_byname_backend(state->request.data.winsreq,&count))){
182 for (i = count; i ; i--) {
183 addr = inet_ntoa(ip_list[i-1]);
187 return WINBINDD_ERROR;
190 /* Clear out the newline character */
191 response[strlen(response)-1] = ' ';
193 fstrcat(response,addr);
194 fstrcat(response,"\t");
196 size = strlen(state->request.data.winsreq) + strlen(response);
199 return WINBINDD_ERROR;
201 fstrcat(response,state->request.data.winsreq);
202 fstrcat(response,"\n");
205 return WINBINDD_ERROR;
207 fstrcpy(state->response.data.winsresp,response);