Added logout and some logging

auth/auth.go

@@ -1,5 +1,9 @@
 package auth
 
+import "fmt"
+
+var ErrInvalidSession = fmt.Errorf(`invalid session token`)
+
 type User interface {
 	GetUsername() string
 	GetName() string

auth/ldap.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"log"
 	"net/http"
 	"path"
 	"time"
@@ -59,15 +60,22 @@ func (a *LDAPAuthService) doGetRequest(url string, response interface{}) error {
 	)
 
 	if err != nil {
+		log.Printf(`GET %q resulted in %v`, url, err)
 		return err
 	}
 
 	res, err := http.DefaultClient.Do(req)
 	if err != nil {
+		log.Printf(`GET %q resulted in %v`, url, err)
 		return err
 	}
 
-	return json.NewDecoder(res.Body).Decode(response)
+	if err := json.NewDecoder(res.Body).Decode(response); err != nil {
+		log.Printf(`GET %q resulted in %v`, url, err)
+		return err
+	}
+
+	return nil
 }
 
 func (a *LDAPAuthService) doPostRequest(url string, request interface{}, response interface{}) error {

auth/memory.go

@@ -89,7 +89,7 @@ func (m *Memory) GetUsers() ([]User, error) {
 func (m *Memory) GetSession(token string) (Session, error) {
 	session, ok := m.Sessions[token]
 	if !ok {
-		return nil, fmt.Errorf(`invalid session token`)
+		return nil, ErrInvalidSession
 	}
 
 	return session, nil