From f3aaae101dc2e2094b1a584756e6fee3775f4961 Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Sun, 18 Nov 2001 08:41:16 +0000
Subject: [PATCH] return "" instead of NULL for <RRD::GETENV UNKNOWN_VARIABLE>
 -- Michael <sysadmin@qsl.net>

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@55 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 src/rrd_cgi.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/rrd_cgi.c b/src/rrd_cgi.c
index e79ecb7..14ce2d4 100644
--- a/src/rrd_cgi.c
+++ b/src/rrd_cgi.c
@@ -211,8 +211,13 @@ char* rrdsetenv(long argc, char **args){
 char* rrdgetenv(long argc, char **args){
   if (argc != 1) {
     return stralloc("[ERROR: getenv faild because it did not get 1 argument only]");
-  };
-  return stralloc(getenv(args[0]));
+  }
+  else if (getenv(args[0]) == NULL) {
+    return stralloc("");
+  }
+  else {
+    return stralloc(getenv(args[0]));
+  }
 }
 
 char* rrdgoodfor(long argc, char **args){
-- 
2.11.0