From 259ce08f81eaaaa087b6b1994fce7dde81820c52 Mon Sep 17 00:00:00 2001
From: Wilmer van der Gaast <wilmer@gaast.net>
Date: Sun, 22 Feb 2015 23:51:27 +0000
Subject: [PATCH] Fix segfault in HTTP handler.

dump1090 crashes when a non-existent file with no dot in its name is requested.
strrchr() will return NULL, not an empty string, when there is no match.
---
 net_io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net_io.c b/net_io.c
index a979883f5..52eaddc0e 100644
--- a/net_io.c
+++ b/net_io.c
@@ -796,7 +796,7 @@ int handleHTTPRequest(struct client *c, char *p) {
     snprintf(ctype, sizeof ctype, MODES_CONTENT_TYPE_HTML); // Default content type
     ext = strrchr(getFile, '.');
 
-    if (strlen(ext) > 0) {
+    if (ext) {
         if (strstr(ext, ".json")) {
             snprintf(ctype, sizeof ctype, MODES_CONTENT_TYPE_JSON);
         } else if (strstr(ext, ".css")) {