Fix call to chmod to include octal formatting.

options.go

@@ -23,7 +23,7 @@ type ProxyConfig struct {
 
 type ProxyInstance struct {
 	UnixSocketPath        string                `json:"unixSocketPath" envconfig:"UNIX_SOCKET_PATH" desc:"The path to the Unix socket."`
-	UnixSocketPermissions int                   `json:"unixSocketPermissions" envconfig:"UNIX_SOCKET_PERMISSIONS" default:"755" desc:"The permissions to set on the Unix socket. Defaults to 0755"`
+	UnixSocketPermissions string                `json:"unixSocketPermissions" envconfig:"UNIX_SOCKET_PERMISSIONS" default:"0755" desc:"The permissions to set on the Unix socket. Defaults to 0755"`
 	UnixSocketEnabled     bool                  `json:"unixSocketEnabled" envconfig:"UNIX_SOCKET_ENABLED" default:"false" desc:"Whether to enable the Unix socket. Defaults to false."`
 	HTTPPort              int                   `json:"httpPort" envconfig:"HTTP_PORT" default:"8080" desc:"The port to listen on for HTTP requests. Defaults to 8080."`
 	HTTPEnabled           bool                  `json:"httpEnabled" envconfig:"HTTP_ENABLED" default:"true" desc:"Whether to enable the HTTP server. Defaults to true."`
@@ -85,8 +85,8 @@ func (i *ProxyInstance) Default() {
 		if i.UnixSocketPath == "" {
 			i.UnixSocketPath = "/tmp/devcycle.sock"
 		}
-		if i.UnixSocketPermissions == 0 {
-			i.UnixSocketPermissions = 755
+		if i.UnixSocketPermissions == "" {
+			i.UnixSocketPermissions = "0755"
 		}
 	}
 }
@@ -196,7 +196,7 @@ func SampleProxyConfig() ProxyConfig {
 			UnixSocketPath:        "/tmp/devcycle.sock",
 			HTTPPort:              8080,
 			UnixSocketEnabled:     false,
-			UnixSocketPermissions: 755,
+			UnixSocketPermissions: "0755",
 			HTTPEnabled:           true,
 			SDKKey:                "",
 			PlatformData: devcycle.PlatformData{

options_test.go

@@ -36,7 +36,7 @@ func TestParseConfig(t *testing.T) {
 				Instances: []*ProxyInstance{
 					{
 						UnixSocketPath:        "",
-						UnixSocketPermissions: 755,
+						UnixSocketPermissions: "0755",
 						HTTPPort:              8080,
 						UnixSocketEnabled:     false,
 						HTTPEnabled:           true,
@@ -79,7 +79,7 @@ func TestParseConfig(t *testing.T) {
 						UnixSocketPath:        "/tmp/dvc2.sock",
 						HTTPPort:              1234,
 						UnixSocketEnabled:     true,
-						UnixSocketPermissions: 755,
+						UnixSocketPermissions: "0755",
 						HTTPEnabled:           false,
 						SDKKey:                "dvc-test-key",
 						LogFile:               "/var/log/devcycle.log",

proxy.go

@@ -71,15 +71,19 @@ func NewBucketingProxyInstance(instance *ProxyInstance) (*ProxyInstance, error)
 				log.Printf("Error running Unix socket server: %s", err)
 			}
 		}()
-		fileMode := os.FileMode(instance.UnixSocketPermissions)
 		_, err = os.Stat(instance.UnixSocketPath)
 		for ; err != nil; _, err = os.Stat(instance.UnixSocketPath) {
 			time.Sleep(1 * time.Second)
 		}
-		if err = os.Chmod(instance.UnixSocketPath, fileMode); err != nil {
+		fileModeOctal, err := strconv.ParseUint(instance.UnixSocketPermissions, 8, 32)
+		if err != nil {
+			log.Printf("error parsing Unix socket permissions: %s", err)
+			return nil, err
+		}
+		if err = os.Chmod(instance.UnixSocketPath, os.FileMode(fileModeOctal)); err != nil {
 			log.Printf("Error setting Unix socket permissions: %s", err)
 		}
-		log.Printf("Running on unix socket: %s with file permissions %d", instance.UnixSocketPath, instance.UnixSocketPermissions)
+		log.Printf("Running on unix socket: %s with file permissions %s", instance.UnixSocketPath, instance.UnixSocketPermissions)
 	}
 	return instance, err
 }