From a88f40d7e39a46dc10c4aaf42f4c1b2301caec33 Mon Sep 17 00:00:00 2001
From: Karl DeBisschop <kdebisschop@users.sourceforge.net>
Date: Sat, 31 May 2003 14:04:05 +0000
Subject: trap null or empty returns from nslookup

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/branches/release-1.3.0@524 f882894a-f735-0410-b71e-b25c423dba1c

diff --git a/plugins/check_dns.c b/plugins/check_dns.c
index 19649f5..df8359c 100644
--- a/plugins/check_dns.c
+++ b/plugins/check_dns.c
@@ -136,12 +136,14 @@ main (int argc, char **argv)
 				/* Strip leading spaces */
 				for (; *temp_buffer != '\0' && *temp_buffer == ' '; temp_buffer++)
 					/* NOOP */;
-				address = strscpy (address, temp_buffer);
+				address = strdup (temp_buffer);
 				strip (address);
+				if (address==NULL || strlen(address)==0)
+					terminate (STATE_CRITICAL, "DNS CRITICAL - '%s' returned empty host name string", %s);
 				result = STATE_OK;
 			}
 			else {
-				output = strscpy (output, "Unknown error (plugin)");
+				output = strdup ("Unknown error (plugin)");
 				result = STATE_WARNING;
 			}
 
@@ -176,9 +178,9 @@ main (int argc, char **argv)
 
 	/* compare to expected address */
 	if (result == STATE_OK && match_expected_address && strcmp(address, expected_address)) {
-	        result = STATE_CRITICAL;
-	        asprintf(&output, "expected %s but got %s", expected_address, address);
-		}
+		result = STATE_CRITICAL;
+		asprintf(&output, "expected %s but got %s", expected_address, address);
+	}
 	
 	(void) time (&end_time);
 
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