Fix incorrect pgsql conn builder behavior (#28085) (#28098)

Backport #28085 by @wxiaoguang

Fix #28083 and fix the tests

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/setting/database.go

@@ -109,7 +109,7 @@ func DBConnStr() (string, error) {
 		connStr = fmt.Sprintf("%s:%s@%s(%s)/%s%scharset=%s&parseTime=true&tls=%s",
 			Database.User, Database.Passwd, connType, Database.Host, Database.Name, paramSep, Database.MysqlCharset, tls)
 	case "postgres":
-		connStr = getPostgreSQLConnectionString(Database.Host, Database.User, Database.Passwd, Database.Name, paramSep, Database.SSLMode)
+		connStr = getPostgreSQLConnectionString(Database.Host, Database.User, Database.Passwd, Database.Name, Database.SSLMode)
 	case "mssql":
 		host, port := ParseMSSQLHostPort(Database.Host)
 		connStr = fmt.Sprintf("server=%s; port=%s; database=%s; user id=%s; password=%s;", host, port, Database.Name, Database.User, Database.Passwd)
@@ -157,7 +157,8 @@ func parsePostgreSQLHostPort(info string) (host, port string) {
 	return host, port
 }
 
-func getPostgreSQLConnectionString(dbHost, dbUser, dbPasswd, dbName, dbParam, dbsslMode string) (connStr string) {
+func getPostgreSQLConnectionString(dbHost, dbUser, dbPasswd, dbName, dbsslMode string) (connStr string) {
+	dbName, dbParam, _ := strings.Cut(dbName, "?")
 	host, port := parsePostgreSQLHostPort(dbHost)
 	connURL := url.URL{
 		Scheme:   "postgres",

modules/setting/database_test.go

@@ -59,38 +59,39 @@ func Test_parsePostgreSQLHostPort(t *testing.T) {
 func Test_getPostgreSQLConnectionString(t *testing.T) {
 	tests := []struct {
 		Host    string
-		Port    string
 		User    string
 		Passwd  string
 		Name    string
-		Param   string
 		SSLMode string
 		Output  string
 	}{
 		{
 			Host:    "/tmp/pg.sock",
-			Port:    "4321",
 			User:    "testuser",
 			Passwd:  "space space !#$%^^%^```-=?=",
 			Name:    "gitea",
-			Param:   "",
 			SSLMode: "false",
 			Output:  "postgres://testuser:space%20space%20%21%23$%25%5E%5E%25%5E%60%60%60-=%3F=@:5432/gitea?host=%2Ftmp%2Fpg.sock&sslmode=false",
 		},
 		{
 			Host:    "localhost",
-			Port:    "1234",
 			User:    "pgsqlusername",
 			Passwd:  "I love Gitea!",
 			Name:    "gitea",
-			Param:   "",
 			SSLMode: "true",
 			Output:  "postgres://pgsqlusername:I%20love%20Gitea%21@localhost:5432/gitea?sslmode=true",
 		},
+		{
+			Host:   "localhost:1234",
+			User:   "user",
+			Passwd: "pass",
+			Name:   "gitea?param=1",
+			Output: "postgres://user:pass@localhost:1234/gitea?param=1&sslmode=",
+		},
 	}
 
 	for _, test := range tests {
-		connStr := getPostgreSQLConnectionString(test.Host, test.User, test.Passwd, test.Name, test.Param, test.SSLMode)
+		connStr := getPostgreSQLConnectionString(test.Host, test.User, test.Passwd, test.Name, test.SSLMode)
 		assert.Equal(t, test.Output, connStr)
 	}
 }