Authentication: Implements authentication

server/server.go

@@ -7,9 +7,23 @@ import (
 
 const VERSION = "Kordophone-2.0"
 
+const (
+	AUTH_USERNAME = "test"
+	AUTH_PASSWORD = "test"
+)
+
 type Server struct {
 	version       string
 	conversations []model.Conversation
+	authTokens    []model.AuthToken
+}
+
+type AuthError struct {
+	message string
+}
+
+func (e *AuthError) Error() string {
+	return e.message
 }
 
 func NewServer() *Server {
@@ -40,3 +54,39 @@ func (s *Server) PopulateWithTestData() {
 
 	s.conversations = cs
 }
+
+func (s *Server) Authenticate(username string, password string) (*model.AuthToken, error) {
+	if username != AUTH_USERNAME || password != AUTH_PASSWORD {
+		return nil, &AuthError{"Invalid username or password"}
+	}
+
+	token, err := model.NewAuthToken(username)
+	if err != nil {
+		return nil, err
+	}
+
+	// Register for future auth
+	s.registerAuthToken(token)
+
+	return token, nil
+}
+
+func (s *Server) CheckBearerToken(token string) bool {
+	return s.authenticateToken(token)
+}
+
+// Private
+
+func (s *Server) registerAuthToken(token *model.AuthToken) {
+	s.authTokens = append(s.authTokens, *token)
+}
+
+func (s *Server) authenticateToken(token string) bool {
+	for _, t := range s.authTokens {
+		if t.SignedToken == token {
+			return true
+		}
+	}
+
+	return false
+}