Prevent sending emails and notifications to inactive users (#2384)

* Filter inactive users before sending emails or creating browser notifications

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* fix formatting issues

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* included requested changes

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

* optimized database queries

* rebasing new master and add tablenames for clarification in xorm queries

* remove escaped quotationmarks using backticks

Signed-off-by: David Schneiderbauer <dschneiderbauer@gmail.com>

models/migrations/migrations.go

@@ -130,6 +130,8 @@ var migrations = []Migration{
 	NewMigration("adds time tracking and stopwatches", addTimetracking),
 	// v40 -> v41
 	NewMigration("migrate protected branch struct", migrateProtectedBranchStruct),
+	// v41 -> v42
+	NewMigration("add default value to user prohibit_login", addDefaultValueToUserProhibitLogin),
 }
 
 // Migrate database to current version

models/migrations/v41.go

@@ -0,0 +1,42 @@
+// 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 migrations
+
+import (
+	"fmt"
+
+	"code.gitea.io/gitea/models"
+
+	"github.com/go-xorm/xorm"
+)
+
+func addDefaultValueToUserProhibitLogin(x *xorm.Engine) (err error) {
+	user := &models.User{
+		ProhibitLogin: false,
+	}
+
+	if _, err := x.Where("`prohibit_login` IS NULL").Cols("prohibit_login").Update(user); err != nil {
+		return err
+	}
+
+	dialect := x.Dialect().DriverName()
+
+	switch dialect {
+	case "mysql":
+		_, err = x.Exec("ALTER TABLE user MODIFY `prohibit_login` tinyint(1) NOT NULL DEFAULT 0")
+	case "postgres":
+		_, err = x.Exec("ALTER TABLE \"user\" ALTER COLUMN `prohibit_login` SET NOT NULL, ALTER COLUMN `prohibit_login` SET DEFAULT false")
+	case "mssql":
+		// xorm already set DEFAULT 0 for data type BIT in mssql
+		_, err = x.Exec(`ALTER TABLE [user] ALTER COLUMN "prohibit_login" BIT NOT NULL`)
+	case "sqlite3":
+	}
+
+	if err != nil {
+		return fmt.Errorf("Error changing user prohibit_login column definition: %v", err)
+	}
+
+	return err
+}