Fix missing password length check when change password (go-gitea#3039)

* fix missing password length check when change password

* add tests for change password

modules/test/context_tests.go

@@ -11,6 +11,7 @@ import (
 
 	"code.gitea.io/gitea/modules/context"
 
+	"github.com/go-macaron/session"
 	"github.com/stretchr/testify/assert"
 	macaron "gopkg.in/macaron.v1"
 )
@@ -33,6 +34,9 @@ func MockContext(t *testing.T) *context.Context {
 	macaronContext.Render = &mockRender{ResponseWriter: macaronContext.Resp}
 	return &context.Context{
 		Context: macaronContext,
+		Flash: &session.Flash{
+			Values: make(url.Values),
+		},
 	}
 }
 

routers/user/setting.go

@@ -223,7 +223,9 @@ func SettingsSecurityPost(ctx *context.Context, form auth.ChangePasswordForm) {
 		return
 	}
 
-	if ctx.User.IsPasswordSet() && !ctx.User.ValidatePassword(form.OldPassword) {
+	if len(form.Password) < setting.MinPasswordLength {
+		ctx.Flash.Error(ctx.Tr("auth.password_too_short", setting.MinPasswordLength))
+	} else if ctx.User.IsPasswordSet() && !ctx.User.ValidatePassword(form.OldPassword) {
 		ctx.Flash.Error(ctx.Tr("settings.password_incorrect"))
 	} else if form.Password != form.Retype {
 		ctx.Flash.Error(ctx.Tr("form.password_not_match"))

routers/user/setting_test.go

@@ -0,0 +1,68 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package user
+
+import (
+	"net/http"
+	"testing"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/auth"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/test"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestChangePassword(t *testing.T) {
+	oldPassword := "password"
+	setting.MinPasswordLength = 6
+
+	for _, req := range []struct {
+		OldPassword string
+		NewPassword string
+		Retype      string
+		Message     string
+	}{
+		{
+			OldPassword: oldPassword,
+			NewPassword: "123456",
+			Retype:      "123456",
+			Message:     "",
+		},
+		{
+			OldPassword: oldPassword,
+			NewPassword: "12345",
+			Retype:      "12345",
+			Message:     "auth.password_too_short",
+		},
+		{
+			OldPassword: "12334",
+			NewPassword: "123456",
+			Retype:      "123456",
+			Message:     "settings.password_incorrect",
+		},
+		{
+			OldPassword: oldPassword,
+			NewPassword: "123456",
+			Retype:      "12345",
+			Message:     "form.password_not_match",
+		},
+	} {
+		models.PrepareTestEnv(t)
+		ctx := test.MockContext(t, "user/settings/security")
+		test.LoadUser(t, ctx, 2)
+		test.LoadRepo(t, ctx, 1)
+
+		SettingsSecurityPost(ctx, auth.ChangePasswordForm{
+			OldPassword: req.OldPassword,
+			Password:    req.NewPassword,
+			Retype:      req.Retype,
+		})
+
+		assert.EqualValues(t, req.Message, ctx.Flash.ErrorMsg)
+		assert.EqualValues(t, http.StatusFound, ctx.Resp.Status())
+	}
+}