add config for external authenticators

config/config.go

@@ -39,9 +39,13 @@ type Configuration struct {
 		Name string `default:"admin"`
 		Pass string `default:"admin"`
 	}
-	PassStrength      int    `default:"10"`
-	UploadedImagesDir string `default:"data/images"`
-	PluginsDir        string `default:"data/plugins"`
+	PassStrength           int    `default:"10"`
+	UploadedImagesDir      string `default:"data/images"`
+	PluginsDir             string `default:"data/plugins"`
+	ExternalAuthenticators []struct {
+		Name string
+		Path string
+	}
 }
 
 // Get returns the configuration extracted from env variables or config file.

config/config_test.go

@@ -90,6 +90,9 @@ defaultuser:
   name: nicories
   pass: 12345
 pluginsdir: data/plugins
+externalauthenticators:
+  - name: ldap
+    path: auth/ldap.so
 `)
 	file.Close()
 	assert.Nil(t, err)
@@ -105,6 +108,8 @@ pluginsdir: data/plugins
 	assert.Equal(t, "GET,POST", conf.Server.ResponseHeaders["Access-Control-Allow-Methods"])
 	assert.Equal(t, []string{".+.example.com", "otherdomain.com"}, conf.Server.Stream.AllowedOrigins)
 	assert.Equal(t, "data/plugins", conf.PluginsDir)
+	assert.Len(t, conf.ExternalAuthenticators, 1)
+	assert.Equal(t, "ldap", conf.ExternalAuthenticators[0].Name)
 
 	assert.Nil(t, os.Remove("config.yml"))
 }