Add client-cert parameters of the Go pq driver to the Vikunja config (#1161)

Co-authored-by: tuxthepenguin <tux@saturnv.uphus-internal.de>
Reviewed-on: https://kolaente.dev/vikunja/api/pulls/1161
Reviewed-by: konrad <k@knt.li>
Co-authored-by: tuxthepenguin <tuxthepenguin@noreply.kolaente.de>
Co-committed-by: tuxthepenguin <tuxthepenguin@noreply.kolaente.de>

pkg/config/config.go

@@ -78,6 +78,9 @@ const (
 	DatabaseMaxIdleConnections    Key = `database.maxidleconnections`
 	DatabaseMaxConnectionLifetime Key = `database.maxconnectionlifetime`
 	DatabaseSslMode               Key = `database.sslmode`
+	DatabaseSslCert               Key = `database.sslcert`
+	DatabaseSslKey                Key = `database.sslkey`
+	DatabaseSslRootCert           Key = `database.sslrootcert`
 	DatabaseTLS                   Key = `database.tls`
 
 	CacheEnabled        Key = `cache.enabled`
@@ -268,6 +271,9 @@ func InitDefaultConfig() {
 	DatabaseMaxIdleConnections.setDefault(50)
 	DatabaseMaxConnectionLifetime.setDefault(10000)
 	DatabaseSslMode.setDefault("disable")
+	DatabaseSslCert.setDefault("")
+	DatabaseSslKey.setDefault("")
+	DatabaseSslRootCert.setDefault("")
 	DatabaseTLS.setDefault("false")
 
 	// Cacher

pkg/db/db.go

@@ -150,13 +150,16 @@ func parsePostgreSQLHostPort(info string) (string, string) {
 
 func initPostgresEngine() (engine *xorm.Engine, err error) {
 	host, port := parsePostgreSQLHostPort(config.DatabaseHost.GetString())
-	connStr := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=%s",
+	connStr := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=%s sslcert=%s sslkey=%s sslrootcert=%s",
 		host,
 		port,
 		url.PathEscape(config.DatabaseUser.GetString()),
 		url.PathEscape(config.DatabasePassword.GetString()),
 		config.DatabaseDatabase.GetString(),
 		config.DatabaseSslMode.GetString(),
+		config.DatabaseSslCert.GetString(),
+		config.DatabaseSslKey.GetString(),
+		config.DatabaseSslRootCert.GetString(),
 	)
 
 	engine, err = xorm.NewEngine("postgres", connStr)