Return error 400 if mandatory param is missing in HTTP request

README.md

@@ -51,6 +51,7 @@ GET /auth?jid=user%40host%2fresource&domain=example.org&method=POST&transaction_
 
 This will send a request to the given JID, then return HTTP code depending on what appended.
  * 200 : User accept the request
+ * 400 : One or more mandatory parameter(s) is missing
  * 401 : User deny the request
  * 504 : User do not provide an answer (timeout)
  * 520 : Unknown error append

http/http.go

@@ -53,10 +53,17 @@ func authHandler(w http.ResponseWriter, r *http.Request) {
 	jid := strings.Join(r.Form[PARAM_JID], "")
 	method := strings.Join(r.Form[METHOD_ACCESS], "")
 	domain := strings.Join(r.Form[DOMAIN_ACCESS], "")
+
+	if jid == "" || method == "" || domain == "" {
+		// If mandatory params is missing
+		log.Printf("%sMandatory params is missing", LogInfo)
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
 	transaction := strings.Join(r.Form[TRANSACTION_ID], "")
 	timeoutStr := strings.Join(r.Form[TIMEOUTE], "")
-	log.Printf("%sAuth %s", LogDebug, jid)
-
+	log.Printf("%sAuth %s", LogInfo, jid)
 	timeout, err := strconv.Atoi(timeoutStr)
 	if err != nil || timeout <= 0 {
 		timeout = TimeoutSec

main.go

@@ -15,7 +15,7 @@ import (
 )
 
 const (
-	Version               = "v0.2"
+	Version               = "v0.3"
 	configurationFilePath = "httpAuth.cfg"
 
 	default_xmpp_server_address = "127.0.0.1"
@@ -27,6 +27,8 @@ var (
 )
 
 func init() {
+	log.Printf("Running HTTP-Auth %v", Version)
+
 	err := cfg.Load(configurationFilePath, mapConfig)
 	if err != nil {
 		log.Fatal("Failed to load configuration file.", err)