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// Copyright 2019 The Gitea Authors. All rights reserved.// SPDX-License-Identifier: MIT package setting import (	"errors"	"fmt"	"net"	"net/url"	"os"	"path/filepath"	"strings"	"time") var (	// SupportedDatabaseTypes includes all XORM supported databases type, sqlite3 maybe added by `database_sqlite3.go`	SupportedDatabaseTypes = []string{"mysql", "postgres"}	// DatabaseTypeNames contains the friendly names for all database types	DatabaseTypeNames = map[string]string{"mysql": "MySQL", "postgres": "PostgreSQL", "sqlite3": "SQLite3"} 	// EnableSQLite3 use SQLite3, set by build flag	EnableSQLite3 bool 	// Database holds the database settings	Database = struct {		Type               DatabaseType		Host               string		Name               string		User               string		Passwd             string		Schema             string		SSLMode            string		Path               string		LogSQL             bool		MysqlCharset       string		CharsetCollation   string		Timeout            int // seconds		SQLiteJournalMode  string		DBConnectRetries   int		DBConnectBackoff   time.Duration		MaxIdleConns       int		MaxOpenConns       int		ConnMaxIdleTime    time.Duration		ConnMaxLifetime    time.Duration		IterateBufferSize  int		AutoMigration      bool		SlowQueryThreshold time.Duration	}{		Timeout:           500,		IterateBufferSize: 50,	}) // LoadDBSetting loads the database settingsfunc LoadDBSetting() {	loadDBSetting(CfgProvider)} func loadDBSetting(rootCfg ConfigProvider) {	sec := rootCfg.Section("database")	Database.Type = DatabaseType(sec.Key("DB_TYPE").String()) 	Database.Host = sec.Key("HOST").String()	Database.Name = sec.Key("NAME").String()	Database.User = sec.Key("USER").String()	if len(Database.Passwd) == 0 {		Database.Passwd = sec.Key("PASSWD").String()	}	Database.Schema = sec.Key("SCHEMA").String()	Database.SSLMode = sec.Key("SSL_MODE").MustString("disable")	Database.CharsetCollation = sec.Key("CHARSET_COLLATION").String() 	Database.Path = sec.Key("PATH").MustString(filepath.Join(AppDataPath, "forgejo.db"))	Database.Timeout = sec.Key("SQLITE_TIMEOUT").MustInt(500)	Database.SQLiteJournalMode = sec.Key("SQLITE_JOURNAL_MODE").MustString("") 	Database.MaxIdleConns = sec.Key("MAX_IDLE_CONNS").MustInt(2)	if Database.Type.IsMySQL() {		Database.ConnMaxLifetime = sec.Key("CONN_MAX_LIFETIME").MustDuration(3 * time.Second)	} else {		Database.ConnMaxLifetime = sec.Key("CONN_MAX_LIFETIME").MustDuration(0)	}	Database.ConnMaxIdleTime = sec.Key("CONN_MAX_IDLETIME").MustDuration(0)	Database.MaxOpenConns = sec.Key("MAX_OPEN_CONNS").MustInt(100) 	Database.IterateBufferSize = sec.Key("ITERATE_BUFFER_SIZE").MustInt(50)	Database.LogSQL = sec.Key("LOG_SQL").MustBool(false)	Database.DBConnectRetries = sec.Key("DB_RETRIES").MustInt(10)	Database.DBConnectBackoff = sec.Key("DB_RETRY_BACKOFF").MustDuration(3 * time.Second)	Database.AutoMigration = sec.Key("AUTO_MIGRATION").MustBool(true) 	deprecatedSetting(rootCfg, "database", "SLOW_QUERY_TRESHOLD", "database", "SLOW_QUERY_THRESHOLD", "1.23")	if sec.HasKey("SLOW_QUERY_TRESHOLD") && !sec.HasKey("SLOW_QUERY_THRESHOLD") {		Database.SlowQueryThreshold = sec.Key("SLOW_QUERY_TRESHOLD").MustDuration(5 * time.Second)	} else {		Database.SlowQueryThreshold = sec.Key("SLOW_QUERY_THRESHOLD").MustDuration(5 * time.Second)	}} // DBConnStr returns database connection stringfunc DBConnStr() (string, error) {	var connStr string	paramSep := "?"	if strings.Contains(Database.Name, paramSep) {		paramSep = "&"	}	switch Database.Type {	case "mysql":		connType := "tcp"		if len(Database.Host) > 0 && Database.Host[0] == '/' { // looks like a unix socket			connType = "unix"		}		tls := Database.SSLMode		if tls == "disable" { // allow (Postgres-inspired) default value to work in MySQL			tls = "false"		}		connStr = fmt.Sprintf("%s:%s@%s(%s)/%s%sparseTime=true&tls=%s",			Database.User, Database.Passwd, connType, Database.Host, Database.Name, paramSep, tls)	case "postgres":		connStr = getPostgreSQLConnectionString(Database.Host, Database.User, Database.Passwd, Database.Name, Database.SSLMode)	case "sqlite3":		if !EnableSQLite3 {			return "", errors.New("this Gitea binary was not built with SQLite3 support")		}		if err := os.MkdirAll(filepath.Dir(Database.Path), os.ModePerm); err != nil {			return "", fmt.Errorf("Failed to create directories: %w", err)		}		journalMode := ""		if Database.SQLiteJournalMode != "" {			journalMode = "&_journal_mode=" + Database.SQLiteJournalMode		}		connStr = fmt.Sprintf("file:%s?cache=shared&mode=rwc&_busy_timeout=%d&_txlock=immediate%s",			Database.Path, Database.Timeout, journalMode)	default:		return "", fmt.Errorf("unknown database type: %s", Database.Type)	} 	return connStr, nil} // parsePostgreSQLHostPort parses given input in various forms defined in// https://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING// and returns proper host and port number.func parsePostgreSQLHostPort(info string) (host, port string) {	if h, p, err := net.SplitHostPort(info); err == nil {		host, port = h, p	} else {		// treat the "info" as "host", if it's an IPv6 address, remove the wrapper		host = info		if strings.HasPrefix(host, "[") && strings.HasSuffix(host, "]") {			host = host[1 : len(host)-1]		}	} 	// set fallback values	if host == "" {		host = "127.0.0.1"	}	if port == "" {		port = "5432"	}	return host, port} func getPostgreSQLConnectionString(dbHost, dbUser, dbPasswd, dbName, dbsslMode string) (connStr string) {	dbName, dbParam, _ := strings.Cut(dbName, "?")	host, port := parsePostgreSQLHostPort(dbHost)	connURL := url.URL{		Scheme:   "postgres",		User:     url.UserPassword(dbUser, dbPasswd),		Host:     net.JoinHostPort(host, port),		Path:     dbName,		OmitHost: false,		RawQuery: dbParam,	}	query := connURL.Query()	if strings.HasPrefix(host, "/") { // looks like a unix socket		query.Add("host", host)		connURL.Host = ":" + port	}	query.Set("sslmode", dbsslMode)	connURL.RawQuery = query.Encode()	return connURL.String()} type DatabaseType string func (t DatabaseType) String() string {	return string(t)} func (t DatabaseType) IsSQLite3() bool {	return t == "sqlite3"} func (t DatabaseType) IsMySQL() bool {	return t == "mysql"} func (t DatabaseType) IsPostgreSQL() bool {	return t == "postgres"}