From 8ddcad5fa1908727f68abb461b615c666616064f Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sun, 22 May 2011 13:15:27 +0200
Subject: [PATCH] Check if an event is initialized before calling event_del().

Libevent prints a warning to stderr if we do that.
---
 src/graph.c      | 3 ++-
 src/net.c        | 4 +++-
 src/net_socket.c | 5 +++--
 src/node.c       | 3 ++-
 src/protocol.c   | 3 ++-
 5 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/src/graph.c b/src/graph.c
index bdb32a01..c78615ba 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -349,7 +349,8 @@ void check_reachability() {
 			n->minmtu = 0;
 			n->mtuprobes = 0;
 
-			event_del(&n->mtuevent);
+			if(timeout_initialized(&n->mtuevent))
+				event_del(&n->mtuevent);
 
 			xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
 			xasprintf(&envp[1], "DEVICE=%s", device ? : "");
diff --git a/src/net.c b/src/net.c
index 0fcc6fae..67603f7d 100644
--- a/src/net.c
+++ b/src/net.c
@@ -375,7 +375,9 @@ int main_loop(void) {
 	signal_del(&sighup_event);
 	signal_del(&sigterm_event);
 	signal_del(&sigquit_event);
-	event_del(&timeout_event);
+
+	if(timeout_initialized(&timeout_event))
+		event_del(&timeout_event);
 
 	return 0;
 }
diff --git a/src/net_socket.c b/src/net_socket.c
index 6093f0e0..163553ad 100644
--- a/src/net_socket.c
+++ b/src/net_socket.c
@@ -462,7 +462,7 @@ void handle_meta_write(int sock, short events, void *data) {
 	}
 
 	buffer_read(&c->outbuf, outlen);
-	if(!c->outbuf.len)
+	if(!c->outbuf.len && event_initialized(&c->outevent))
 		event_del(&c->outevent);
 }
 
@@ -476,7 +476,8 @@ void setup_outgoing_connection(outgoing_t *outgoing) {
 	connection_t *c;
 	node_t *n;
 
-	event_del(&outgoing->ev);
+	if(event_initialized(&outgoing->ev))
+		event_del(&outgoing->ev);
 
 	n = lookup_node(outgoing->name);
 
diff --git a/src/node.c b/src/node.c
index 1f1f94d9..3ec9fab1 100644
--- a/src/node.c
+++ b/src/node.c
@@ -85,7 +85,8 @@ void free_node(node_t *n) {
 	cipher_close(&n->outcipher);
 	digest_close(&n->outdigest);
 
-	event_del(&n->mtuevent);
+	if(timeout_initialized(&n->mtuevent))
+		event_del(&n->mtuevent);
 	
 	if(n->hostname)
 		free(n->hostname);
diff --git a/src/protocol.c b/src/protocol.c
index e866e316..6cb29bf7 100644
--- a/src/protocol.c
+++ b/src/protocol.c
@@ -228,5 +228,6 @@ void init_requests(void) {
 void exit_requests(void) {
 	splay_delete_tree(past_request_tree);
 
-	event_del(&past_request_event);
+	if(timeout_initialized(&past_request_event))
+		event_del(&past_request_event);
 }
-- 
2.20.1