2 Unix SMB/CIFS implementation.
4 wins hook feature, we run a specified script
5 which can then do some custom actions
7 Copyright (C) Stefan Metzmacher 2005
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/>.
24 #include "nbt_server/nbt_server.h"
25 #include "nbt_server/wins/winsdb.h"
26 #include "system/filesys.h"
27 #include "param/param.h"
29 static const char *wins_hook_action_string(enum wins_hook_action action)
32 case WINS_HOOK_ADD: return "add";
33 case WINS_HOOK_MODIFY: return "refresh";
34 case WINS_HOOK_DELETE: return "delete";
40 void wins_hook(struct winsdb_handle *h, const struct winsdb_record *rec,
41 enum wins_hook_action action)
43 const char *script = lp_wins_hook();
47 TALLOC_CTX *tmp_mem = NULL;
49 if (!script || !script[0]) return;
51 tmp_mem = talloc_new(h);
52 if (!tmp_mem) goto failed;
54 length = winsdb_addr_list_length(rec->addresses);
56 if (action == WINS_HOOK_MODIFY && length < 1) {
57 action = WINS_HOOK_DELETE;
60 cmd = talloc_asprintf(tmp_mem,
63 wins_hook_action_string(action),
67 if (!cmd) goto failed;
69 for (i=0; rec->addresses[i]; i++) {
70 cmd = talloc_asprintf_append_buffer(cmd, " %s", rec->addresses[i]->address);
71 if (!cmd) goto failed;
74 DEBUG(10,("call wins hook '%s'\n", cmd));
76 /* signal handling in posix really sucks - doing this in a library
77 affects the whole app, but what else to do?? */
78 signal(SIGCHLD, SIG_IGN);
81 if (child == (pid_t)-1) {
86 /* TODO: close file handles */
87 execl("/bin/sh", "sh", "-c", cmd, NULL);
95 DEBUG(0,("FAILED: calling wins hook '%s'\n", script));