r24843: Add a "validate-cache" control message to winbindd.

So there is a new subcommand "smbcontrol winbindd validate-cache" now.

This change provides the infrastructure:
The function currently returns "true" unconditionally.
The call of a real cache validation function will be incorporated
in subsequent changes.

Michael
(This used to be commit ef92d505c04397614cb0dd5ede967e9017a5e302)

3 files changed, 71 insertions, 0 deletions

diff --git a/source3/include/messages.h b/source3/include/messages.h
index 7818446a09..b3ae85ec9c 100644
--- a/source3/include/messages.h
+++ b/source3/include/messages.h
@@ -96,6 +96,7 @@
 #define MSG_WINBIND_ONLINESTATUS	0x0405
 #define MSG_WINBIND_TRY_TO_GO_ONLINE	0x0406
 #define MSG_WINBIND_FAILED_TO_GO_ONLINE 0x0407
+#define MSG_WINBIND_VALIDATE_CACHE	0x0408
 
 /* event messages */
 #define MSG_DUMP_EVENT_LIST		0x0500
diff --git a/source3/nsswitch/winbindd.c b/source3/nsswitch/winbindd.c
index d7368a3d34..913ad04c6d 100644
--- a/source3/nsswitch/winbindd.c
+++ b/source3/nsswitch/winbindd.c
@@ -202,6 +202,28 @@ static void msg_shutdown(struct messaging_context *msg,
 	do_sigterm = True;
 }
 
+
+static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
+				       void *private_data,
+				       uint32_t msg_type,
+				       struct server_id server_id,
+				       DATA_BLOB *data)
+{
+	uint8 ret;
+
+	DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
+		   "message.\n"));
+
+#if 0
+	ret = (uint8)winbindd_validate_cache_nobackup();
+	DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
+#else
+	ret = 0;
+#endif
+	messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
+			   (size_t)1);
+}
+
 static struct winbindd_dispatch_table {
 	enum winbindd_cmd cmd;
 	void (*fn)(struct winbindd_cli_state *state);
@@ -1170,6 +1192,10 @@ int main(int argc, char **argv, char **envp)
 	messaging_register(winbind_messaging_context(), NULL,
 			   MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
 
+	messaging_register(winbind_messaging_context(), NULL,
+			   MSG_WINBIND_VALIDATE_CACHE,
+			   winbind_msg_validate_cache);
+
 	netsamlogon_cache_init(); /* Non-critical */
 	
 	/* clear the cached list of trusted domains */
diff --git a/source3/utils/smbcontrol.c b/source3/utils/smbcontrol.c
index 2a435945e6..8255a41c96 100644
--- a/source3/utils/smbcontrol.c
+++ b/source3/utils/smbcontrol.c
@@ -1012,6 +1012,48 @@ static BOOL do_dump_event_list(struct messaging_context *msg_ctx,
 	return send_message(msg_ctx, pid, MSG_DUMP_EVENT_LIST, NULL, 0);
 }
 
+static void winbind_validate_cache_cb(struct messaging_context *msg,
+				      void *private_data,
+				      uint32_t msg_type,
+				      struct server_id pid,
+				      DATA_BLOB *data)
+{
+	char *src_string = procid_str(NULL, &pid);
+	printf("Winbindd cache is %svalid. (answer from pid %s)\n",
+	       (*(data->data) == 0 ? "" : "NOT "), src_string);
+	TALLOC_FREE(src_string);
+	num_replies++;
+}
+
+static BOOL do_winbind_validate_cache(struct messaging_context *msg_ctx,
+				      const struct server_id pid,
+				      const int argc, const char **argv)
+{
+	struct server_id myid = pid_to_procid(sys_getpid());
+
+	if (argc != 1) {
+		fprintf(stderr, "Usage: smbcontrol winbindd validate-cache\n");
+		return False;
+	}
+
+	messaging_register(msg_ctx, NULL, MSG_WINBIND_VALIDATE_CACHE,
+			   winbind_validate_cache_cb);
+
+	if (!send_message(msg_ctx, pid, MSG_WINBIND_VALIDATE_CACHE, &myid,
+			  sizeof(myid))) {
+		return False;
+	}
+
+	wait_replies(msg_ctx, procid_to_pid(&pid) == 0);
+
+	if (num_replies == 0) {
+		printf("No replies received\n");
+	}
+
+	messaging_deregister(msg_ctx, MSG_WINBIND_VALIDATE_CACHE, NULL);
+
+	return num_replies;
+}
 
 static BOOL do_reload_config(struct messaging_context *msg_ctx,
 			     const struct server_id pid,
@@ -1110,6 +1152,8 @@ static const struct {
 	{ "offline", do_winbind_offline, "Ask winbind to go into offline state"},
 	{ "onlinestatus", do_winbind_onlinestatus, "Request winbind online status"},
 	{ "dump-event-list", do_dump_event_list, "Dump event list"},
+	{ "validate-cache" , do_winbind_validate_cache,
+	  "Validate winbind's credential cache" },
 	{ "noop", do_noop, "Do nothing" },
 	{ NULL }
 };