feat: config import

License: MIT
Signed-off-by: Henrique Dias <hacdias@gmail.com>

auth/json.go

@@ -26,7 +26,7 @@ type JSONAuth struct {
 }
 
 // Auth authenticates the user via a json in content body.
-func (a *JSONAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users.User, error) {
+func (a JSONAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users.User, error) {
 	var cred jsonCred
 
 	if r.Body == nil {

auth/none.go

@@ -14,6 +14,6 @@ const MethodNoAuth settings.AuthMethod = "noauth"
 type NoAuth struct{}
 
 // Auth uses authenticates user 1.
-func (a *NoAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users.User, error) {
+func (a NoAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users.User, error) {
 	return sto.Get(root, 1)
 }

auth/proxy.go

@@ -18,7 +18,7 @@ type ProxyAuth struct {
 }
 
 // Auth authenticates the user via an HTTP header.
-func (a *ProxyAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users.User, error) {
+func (a ProxyAuth) Auth(r *http.Request, sto *users.Storage, root string) (*users.User, error) {
 	username := r.Header.Get(a.Header)
 	user, err := sto.Get(root, username)
 	if err == errors.ErrNotExist {

cmd/config_export.go

@@ -12,16 +12,26 @@ func init() {
 }
 
 var configExportCmd = &cobra.Command{
-	Use:   "export",
+	Use:   "export <filename>",
-	Short: "Export the config.",
+	Short: "Export the configuration to a file.",
-	Args:  cobra.NoArgs,
+	Args:  cobra.ExactArgs(1),
 	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
 		settings, err := d.store.Settings.Get()
 		checkErr(err)
 
-		encoder := json.NewEncoder(os.Stdout)
+		auther, err := d.store.Auth.Get(settings.AuthMethod)
+		checkErr(err)
+
+		fd, err := os.Create(args[0])
+		checkErr(err)
+		defer fd.Close()
+
+		encoder := json.NewEncoder(fd)
 		encoder.SetIndent("", "    ")
-		encoder.Encode(settings)
+		encoder.Encode(&settingsFile{
+			Settings: settings,
+			Auther:   auther,
+		})
 
 	}, pythonConfig{}),
 }

cmd/config_import.go

@@ -0,0 +1,81 @@
+package cmd
+
+import (
+	"encoding/json"
+	"errors"
+	"os"
+	"reflect"
+
+	"github.com/filebrowser/filebrowser/v2/auth"
+	"github.com/filebrowser/filebrowser/v2/settings"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	configCmd.AddCommand(configImportCmd)
+}
+
+type settingsFile struct {
+	Settings *settings.Settings `json:"settings"`
+	Auther   interface{}        `json:"auther"`
+}
+
+var configImportCmd = &cobra.Command{
+	Use: "import <filename>",
+	Short: `Import a configuration file. This will replace all the existing
+configuration. Can be used with or without unexisting databases.
+If used with a nonexisting database, a key will be generated
+automatically. Otherwise the key will be kept the same as in the
+database.`,
+	Args: cobra.ExactArgs(1),
+	Run: python(func(cmd *cobra.Command, args []string, d pythonData) {
+		var key []byte
+		if d.hadDB {
+			settings, err := d.store.Settings.Get()
+			checkErr(err)
+			key = settings.Key
+		} else {
+			key = generateRandomBytes(64)
+		}
+
+		fd, err := os.Open(args[0])
+		checkErr(err)
+		defer fd.Close()
+
+		file := settingsFile{}
+		err = json.NewDecoder(fd).Decode(&file)
+		checkErr(err)
+
+		file.Settings.Key = key
+
+		err = d.store.Settings.Save(file.Settings)
+		checkErr(err)
+
+		var auther auth.Auther
+		switch file.Settings.AuthMethod {
+		case auth.MethodJSONAuth:
+			auther = getAuther(auth.JSONAuth{}, file.Auther).(*auth.JSONAuth)
+		case auth.MethodNoAuth:
+			auther = getAuther(auth.NoAuth{}, file.Auther).(*auth.NoAuth)
+		case auth.MethodProxyAuth:
+			auther = getAuther(auth.ProxyAuth{}, file.Auther).(*auth.ProxyAuth)
+		default:
+			checkErr(errors.New("invalid auth method"))
+		}
+
+		err = d.store.Auth.Save(auther)
+		checkErr(err)
+		printSettings(file.Settings, auther)
+	}, pythonConfig{allowNoDB: true}),
+}
+
+func getAuther(sample auth.Auther, data interface{}) interface{} {
+	authType := reflect.TypeOf(sample)
+	auther := reflect.New(authType).Interface()
+
+	bytes, err := json.Marshal(data)
+	checkErr(err)
+	err = json.Unmarshal(bytes, &auther)
+
+	return auther
+}