Change DBssl to string

app.go

@@ -11,6 +11,7 @@ import (
 	"os"
 	"os/signal"
 	"sort"
+	"strconv"
 	"strings"
 	"sync"
 	"syscall"
@@ -127,9 +128,13 @@ func NewHeadscale(cfg *Config) (*Headscale, error) {
 			cfg.DBuser,
 		)
 
-		if !cfg.DBssl {
+		if s, err := strconv.ParseBool(cfg.DBssl); err == nil {
+			if !s {
 				dbString += " sslmode=disable"
 			}
+		} else {
+			dbString += fmt.Sprintf(" sslmode=%s", cfg.DBssl)
+		}
 
 		if cfg.DBport != 0 {
 			dbString += fmt.Sprintf(" port=%d", cfg.DBport)

config.go

@@ -51,7 +51,7 @@ type Config struct {
 	DBname string
 	DBuser string
 	DBpass string
-	DBssl  bool
+	DBssl  string
 
 	TLS TLSConfig
 
@@ -545,7 +545,7 @@ func GetHeadscaleConfig() (*Config, error) {
 		DBname: viper.GetString("db_name"),
 		DBuser: viper.GetString("db_user"),
 		DBpass: viper.GetString("db_pass"),
-		DBssl:  viper.GetBool("db_ssl"),
+		DBssl:  viper.GetString("db_ssl"),
 
 		TLS: GetTLSConfig(),