Better error handling in two web app modules

modules/exploits/multi/http/horde_href_backdoor.rb

@@ -85,8 +85,8 @@ class Metasploit3 < Msf::Exploit::Remote
 			}
 		}) #default timeout, we don't care about the response
 
-		if (res)
-			print_status("The server returned: #{res.code} #{res.message}")
+		if not res
+			fail_with(Exploit::Failure::NotFound, 'The server did not respond to our request')
 		end
 
 		resp = res.body.split(key)

modules/exploits/unix/http/lifesize_room.rb

@@ -63,9 +63,8 @@ class Metasploit3 < Msf::Exploit::Remote
 			'method'    => 'GET',
 		}, 10)
 
-		if not res.headers['set-cookie']
-			print_error('Could Not Obtain A Session ID')
-			return
+		if not (res and res.headers['set-cookie'])
+			fail_with(Exploit::Failure::NotFound, 'Could not obtain a Session ID')
 		end
 
 		sessionid = 'PHPSESSID=' << res.headers['set-cookie'].split('PHPSESSID=')[1].split('; ')[0]
@@ -93,7 +92,7 @@ class Metasploit3 < Msf::Exploit::Remote
 		}, 10)
 
 		if not res
-			print_error('Could Not Validate The Session ID')
+			fail_with(Exploit::Failure::NotFound, 'Could not validate the Session ID')
 			return
 		end