From d16ee557bdcdaec4fa09bcc4e7650f5f85d4f94d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ux=C3=ADo?= <ufuentefria@telecongalicia.com>
Date: Thu, 26 Feb 2015 16:14:04 +0100
Subject: [PATCH] Fixed segfault checking command line arguments

With inputs like ./hydra -l admin -P passwords/dictionary.txt
hydra gives a segmentation fault. Now checks if index < argc after
trying to access to argv[index]
---
 hydra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hydra.c b/hydra.c
index 9472fa8..33dfa8e 100644
--- a/hydra.c
+++ b/hydra.c
@@ -2382,7 +2382,7 @@ int main(int argc, char *argv[]) {
       hydra_options.service = argv[optind];
       if (optind + 2 == argc)
         hydra_options.miscptr = argv[optind + 1];
-    } else if (optind + 2 != argc && optind + 3 != argc) {
+    } else if (optind + 2 != argc && optind + 3 != argc && optind < argc) {
       // check if targetdef follow syntax <service-name>://<target>[:<port-number>][/<parameters>] or it's a syntax error 
       char *targetdef = strdup(argv[optind]);
       char *service_pos, *target_pos, *port_pos = NULL, *param_pos = NULL;