From ba0a3bcb2d565eec26aed30eef902d3482877cf9 Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@tinc-vpn.org>
Date: Thu, 18 Jul 2019 01:33:38 +0200
Subject: [PATCH] Don't keep an address cache in an outgoing_t.

Address caches are associated with nodes, so just use the address cache
in the node_t struct. Also ensure we always have opened an address cache in
setup_outgoing_connection().

Thanks to admincheg for finding this issue.
---
 src/net.h           |  1 -
 src/net_socket.c    | 15 +++++----------
 src/protocol_misc.c |  4 ++--
 3 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/src/net.h b/src/net.h
index 8a74d859..cf0ddc79 100644
--- a/src/net.h
+++ b/src/net.h
@@ -121,7 +121,6 @@ typedef struct listen_socket_t {
 typedef struct outgoing_t {
 	struct node_t *node;
 	int timeout;
-	struct address_cache_t *address_cache;
 	timeout_t ev;
 } outgoing_t;
 
diff --git a/src/net_socket.c b/src/net_socket.c
index a6961279..206321cd 100644
--- a/src/net_socket.c
+++ b/src/net_socket.c
@@ -527,7 +527,7 @@ bool do_outgoing_connection(outgoing_t *outgoing) {
 	int result;
 
 begin:
-	sa = get_recent_address(outgoing->address_cache);
+	sa = get_recent_address(outgoing->node->address_cache);
 
 	if(!sa) {
 		logger(DEBUG_CONNECTIONS, LOG_ERR, "Could not set up a meta connection to %s", outgoing->node->name);
@@ -632,6 +632,10 @@ void setup_outgoing_connection(outgoing_t *outgoing, bool verbose) {
 
 	node_t *n = outgoing->node;
 
+	if(!n->address_cache) {
+		n->address_cache = open_address_cache(n);
+	}
+
 	if(n->connection) {
 		logger(DEBUG_CONNECTIONS, LOG_INFO, "Already connected to %s", n->name);
 
@@ -643,10 +647,6 @@ void setup_outgoing_connection(outgoing_t *outgoing, bool verbose) {
 		}
 	}
 
-	if(!outgoing->address_cache) {
-		outgoing->address_cache = open_address_cache(n);
-	}
-
 	do_outgoing_connection(outgoing);
 	return;
 
@@ -787,11 +787,6 @@ void handle_new_unix_connection(void *data, int flags) {
 
 static void free_outgoing(outgoing_t *outgoing) {
 	timeout_del(&outgoing->ev);
-
-	if(outgoing->address_cache) {
-		close_address_cache(outgoing->address_cache);
-	}
-
 	free(outgoing);
 }
 
diff --git a/src/protocol_misc.c b/src/protocol_misc.c
index a4fcd6f7..050e30a0 100644
--- a/src/protocol_misc.c
+++ b/src/protocol_misc.c
@@ -71,9 +71,9 @@ bool pong_h(connection_t *c, const char *request) {
 
 	/* Successful connection, reset timeout if this is an outgoing connection. */
 
-	if(c->outgoing) {
+	if(c->outgoing && c->outgoing->timeout) {
 		c->outgoing->timeout = 0;
-		reset_address_cache(c->outgoing->address_cache, &c->address);
+		reset_address_cache(c->outgoing->node->address_cache, &c->address);
 	}
 
 	return true;
-- 
2.20.1