Merge pull request #483 from writefreely/log-gone-user-out

Log user out when authenticated as deleted user

account.go

@@ -787,6 +787,9 @@ func viewArticles(app *App, u *User, w http.ResponseWriter, r *http.Request) err
 
 	silenced, err := app.db.IsUserSilenced(u.ID)
 	if err != nil {
+		if err == ErrUserNotFound {
+			return err
+		}
 		log.Error("view articles: %v", err)
 	}
 	d := struct {
@@ -822,7 +825,10 @@ func viewCollections(app *App, u *User, w http.ResponseWriter, r *http.Request)
 
 	silenced, err := app.db.IsUserSilenced(u.ID)
 	if err != nil {
-		log.Error("view collections %v", err)
+		if err == ErrUserNotFound {
+			return err
+		}
+		log.Error("view collections: %v", err)
 		return fmt.Errorf("view collections: %v", err)
 	}
 	d := struct {
@@ -861,6 +867,9 @@ func viewEditCollection(app *App, u *User, w http.ResponseWriter, r *http.Reques
 
 	silenced, err := app.db.IsUserSilenced(u.ID)
 	if err != nil {
+		if err == ErrUserNotFound {
+			return err
+		}
 		log.Error("view edit collection %v", err)
 		return fmt.Errorf("view edit collection: %v", err)
 	}
@@ -1038,6 +1047,9 @@ func viewStats(app *App, u *User, w http.ResponseWriter, r *http.Request) error
 
 	silenced, err := app.db.IsUserSilenced(u.ID)
 	if err != nil {
+		if err == ErrUserNotFound {
+			return err
+		}
 		log.Error("view stats: %v", err)
 		return err
 	}
@@ -1071,6 +1083,9 @@ func viewStats(app *App, u *User, w http.ResponseWriter, r *http.Request) error
 func viewSettings(app *App, u *User, w http.ResponseWriter, r *http.Request) error {
 	fullUser, err := app.db.GetUserByID(u.ID)
 	if err != nil {
+		if err == ErrUserNotFound {
+			return err
+		}
 		log.Error("Unable to get user for settings: %s", err)
 		return impart.HTTPError{http.StatusInternalServerError, "Unable to retrieve user data. The humans have been alerted."}
 	}

database.go

@@ -332,7 +332,7 @@ func (db *datastore) IsUserSilenced(id int64) (bool, error) {
 	err := db.QueryRow("SELECT status FROM users WHERE id = ?", id).Scan(&u.Status)
 	switch {
 	case err == sql.ErrNoRows:
-		return false, fmt.Errorf("is user silenced: %v", ErrUserNotFound)
+		return false, ErrUserNotFound
 	case err != nil:
 		log.Error("Couldn't SELECT user status: %v", err)
 		return false, fmt.Errorf("is user silenced: %v", err)

handle.go

@@ -155,8 +155,14 @@ func (h *Handler) User(f userHandlerFunc) http.HandlerFunc {
 			err := f(h.app.App(), u, w, r)
 			if err == nil {
 				status = http.StatusOK
-			} else if err, ok := err.(impart.HTTPError); ok {
+			} else if impErr, ok := err.(impart.HTTPError); ok {
-				status = err.Status
+				status = impErr.Status
+				if impErr == ErrUserNotFound {
+					log.Info("Logged-in user not found. Logging out.")
+					sendRedirect(w, http.StatusFound, "/me/logout?to="+h.app.App().cfg.App.LandingPath())
+					// Reset err so handleHTTPError does nothing
+					err = nil
+				}
 			} else {
 				status = http.StatusInternalServerError
 			}

invites.go

@@ -78,6 +78,9 @@ func handleViewUserInvites(app *App, u *User, w http.ResponseWriter, r *http.Req
 
 	p.Silenced, err = app.db.IsUserSilenced(u.ID)
 	if err != nil {
+		if err == ErrUserNotFound {
+			return err
+		}
 		log.Error("view invites: %v", err)
 	}
 

pad.go

@@ -55,6 +55,9 @@ func handleViewPad(app *App, w http.ResponseWriter, r *http.Request) error {
 		}
 		appData.Silenced, err = app.db.IsUserSilenced(appData.User.ID)
 		if err != nil {
+			if err == ErrUserNotFound {
+				return err
+			}
 			log.Error("Unable to get user status for Pad: %v", err)
 		}
 	}

session.go

@@ -130,12 +130,13 @@ func saveUserSession(app *App, r *http.Request, w http.ResponseWriter) error {
 	return err
 }
 
-func getFullUserSession(app *App, r *http.Request) *User {
+func getFullUserSession(app *App, r *http.Request) (*User, error) {
 	u := getUserSession(app, r)
 	if u == nil {
-		return nil
+		return nil, nil
 	}
 
-	u, _ = app.db.GetUserByID(u.ID)
+	var err error
-	return u
+	u, err = app.db.GetUserByID(u.ID)
+	return u, err
 }