From: Pierre Pronchery <khorben@defora.org>
Date: Thu, 28 Dec 2017 07:37:09 +0000 (+0100)
Subject: Avoid a crash in "script list" (#521)
X-Git-Tag: v3.1.0~98
X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/0f112d6f19ecf6e7d443eaf3464ebf916048be59?ds=inline

Avoid a crash in "script list" (#521)

This command crashes if the path to the executable directory could not
be found.
---

diff --git a/client/cmdscript.c b/client/cmdscript.c
index 23163aa9..0d19f496 100644
--- a/client/cmdscript.c
+++ b/client/cmdscript.c
@@ -76,8 +76,11 @@ int CmdList(const char *Cmd)
 {
     DIR *dp;
     struct dirent *ep;
-	char script_directory_path[strlen(get_my_executable_directory()) + strlen(LUA_SCRIPTS_DIRECTORY) + 1];
-	strcpy(script_directory_path, get_my_executable_directory());
+	char const * exedir = get_my_executable_directory();
+	if (exedir == NULL)
+	    return 0;
+	char script_directory_path[strlen(exedir) + strlen(LUA_SCRIPTS_DIRECTORY) + 1];
+	strcpy(script_directory_path, exedir);
 	strcat(script_directory_path, LUA_SCRIPTS_DIRECTORY);
     dp = opendir(script_directory_path);