r13115: call the wins hook script on modifications of the wins.ldb

tridge: can you please look at the /* TODO: close file handles */
        btw I'm not interessted in any result from the script...

metze
(This used to be commit 93409faddf610e7fd6cc910a1e2fd32e69aa7c1d)

diff --git a/source4/nbt_server/wins/wins_hook.c b/source4/nbt_server/wins/wins_hook.c
index 4c798fc18c3a060b286f9867a075fd33038d3088..53b30c239231e64db7f4d0e46f96e831dd61cf2f 100644 (file)
--- a/source4/nbt_server/wins/wins_hook.c
+++ b/source4/nbt_server/wins/wins_hook.c
@@ -24,24 +24,72 @@
 #include "includes.h"
 #include "nbt_server/nbt_server.h"
 #include "nbt_server/wins/winsdb.h"
+#include "system/filesys.h"
 
 static const char *wins_hook_action_string(enum wins_hook_action action)
 {
        switch (action) {
-       case WINS_HOOK_ADD:     return "WINS_HOOK_ADD";
-       case WINS_HOOK_MODIFY:  return "WINS_HOOK_MODIFY";
-       case WINS_HOOK_DELETE:  return "WINS_HOOK_DELETE";
+       case WINS_HOOK_ADD:     return "add";
+       case WINS_HOOK_MODIFY:  return "refresh";
+       case WINS_HOOK_DELETE:  return "delete";
        }
 
-       return "WINS_HOOK_ACTION_UNKNOWN";
+       return "unknown";
 }
 
-void wins_hook(struct winsdb_handle *h, struct winsdb_record *rec, enum wins_hook_action action)
+void wins_hook(struct winsdb_handle *h, const struct winsdb_record *rec, enum wins_hook_action action)
 {
        const char *script = lp_wins_hook();
+       uint32_t i, length;
+       int child;
+       char *cmd = NULL;
+       TALLOC_CTX *tmp_mem = NULL;
+
        if (!script || !script[0]) return;
 
-       DEBUG(0,("TODO: call wins hook '%s' '%s' for name '%s'\n",
-               script, wins_hook_action_string(action),
-               nbt_name_string(rec, rec->name)));
+       tmp_mem = talloc_new(h);
+       if (!tmp_mem) goto failed;
+
+       length = winsdb_addr_list_length(rec->addresses);
+
+       if (action == WINS_HOOK_MODIFY && length < 1) {
+               action = WINS_HOOK_DELETE;
+       }
+
+       cmd = talloc_asprintf(tmp_mem,
+                             "%s %s %s %02x %ld",
+                             script,
+                             wins_hook_action_string(action),
+                             rec->name->name,
+                             rec->name->type,
+                             rec->expire_time);
+       if (!cmd) goto failed;
+
+       for (i=0; rec->addresses[i]; i++) {
+               cmd = talloc_asprintf_append(cmd, " %s", rec->addresses[i]->address);
+               if (!cmd) goto failed;
+       }
+
+       DEBUG(10,("call wins hook '%s'\n", cmd));
+
+       /* signal handling in posix really sucks - doing this in a library
+          affects the whole app, but what else to do?? */
+       signal(SIGCHLD, SIG_IGN);
+
+       child = fork();
+       if (child == (pid_t)-1) {
+               goto failed;
+       }
+
+       if (child == 0) {
+/* TODO: close file handles */
+               execl("/bin/sh", "sh", "-c", cmd, NULL);
+               _exit(0);
+       }
+
+       talloc_free(tmp_mem);
+       return;
+failed:
+       talloc_free(tmp_mem);
+       DEBUG(0,("FAILED: calling wins hook '%s'\n", script));
 }