env: validate environment variable size > zero

edsiper · edsiper · commit 6715ea796c6f · 2020-06-09T18:06:18.000-06:00
Signed-off-by: Eduardo Silva &lt;eduardo@treasure-data.com&gt;
diff --git a/src/flb_env.c b/src/flb_env.c
@@ -146,6 +146,10 @@ const char *flb_env_get(struct flb_env *env, const char *key)
         return NULL;
     }
 
+    if (strlen(out_buf) == 0) {
+        return NULL;
+    }
+
     return out_buf;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -146,6 +146,10 @@ const char flb_env_get(struct flb_env env, const char *key)`
`146`	`146`	`return NULL;`
`147`	`147`	`}`
`148`	`148`
	`149`	`+ if (strlen(out_buf) == 0) {`
	`150`	`+ return NULL;`
	`151`	`+ }`
	`152`	`+`
`149`	`153`	`return out_buf;`
`150`	`154`	`}`
`151`	`155`