Implement SASL method parsing

1 files changed, 29 insertions, 1 deletions

diff --git a/xmpp/routing.go b/xmpp/routing.go
index 34136f4..55ec135 100644
--- a/xmpp/routing.go
+++ b/xmpp/routing.go
@@ -95,7 +95,35 @@ type elementRoutingTable []struct {
 }
 
 func streamFeatures(b []xml.Token) error {
-	log.Println("Received stream features")
+	err := sendSaslAuth(b)
+	if err != nil {
+		return err
+	}
 
 	return nil
 }
+
+func sendSaslAuth(b []xml.Token) error {
+	mechanisms := make([]string, 0)
+	for i, v := range(b) {
+		switch token := v.(type) {
+		case xml.StartElement:
+			expected := xml.Name{"urn:ietf:params:xml:ns:xmpp-sasl", "mechanism"}
+			if token.Name == expected {
+				if i >= (len(b)-1) { continue }
+				switch payload := b[i+1].(type) {
+				case xml.CharData:
+					mechanisms = append(mechanisms, string(payload))
+				}
+			}
+		}
+	}
+
+	for _, v := range(mechanisms) {
+		if v == "PLAIN" {
+			return nil
+		}
+	}
+
+	return errors.New("No compatible SASL mechanism given")
+}