From: Guus Sliepen <guus@meshlink.io>
Date: Thu, 22 Apr 2021 22:47:15 +0000 (+0200)
Subject: Fix a potential segmentation fault when log level is set to DEBUG.
X-Git-Url: http://git.meshlink.io/?p=meshlink;a=commitdiff_plain;h=777055274c4a1959318330800e449a2bc27835fb

Fix a potential segmentation fault when log level is set to DEBUG.
---

diff --git a/src/protocol_key.c b/src/protocol_key.c
index b2ba50fe..25dbc55e 100644
--- a/src/protocol_key.c
+++ b/src/protocol_key.c
@@ -278,7 +278,7 @@ static bool req_key_ext_h(meshlink_handle_t *mesh, connection_t *c, const char *
 		char *canonical_address;
 		xasprintf(&canonical_address, "%s %s", host, port);
 
-		if(mesh->log_level <= MESHLINK_DEBUG && strcmp(from->canonical_address, canonical_address)) {
+		if(mesh->log_level <= MESHLINK_DEBUG && (!from->canonical_address || strcmp(from->canonical_address, canonical_address))) {
 			logger(mesh, MESHLINK_DEBUG, "Updating canonical address of %s to %s", from->name, canonical_address);
 		}