make chmod paths configurable from localstack

cmd/localstack/file_utils.go

@@ -1,11 +1,37 @@
 package main
 
 import (
+	"encoding/json"
+	log "github.com/sirupsen/logrus"
 	"io"
 	"os"
 	"path/filepath"
+	"strconv"
 )
 
+type Chmod struct {
+	Path string `json:"path"`
+	Mode string `json:"mode"`
+}
+
+func AdaptFilesystemPermissions(chmodInfoString string) error {
+	var chmodInfo []Chmod
+	err := json.Unmarshal([]byte(chmodInfoString), &chmodInfo)
+	if err != nil {
+		return err
+	}
+	for _, chmod := range chmodInfo {
+		mode, err := strconv.ParseInt(chmod.Mode, 0, 32)
+		if err != nil {
+			return err
+		}
+		if err := ChmodRecursively(chmod.Path, os.FileMode(mode)); err != nil {
+			log.Warnf("Could not change file mode recursively of directory %s: %s\n", chmod.Path, err)
+		}
+	}
+	return nil
+}
+
 // Inspired by https://stackoverflow.com/questions/73864379/golang-change-permission-os-chmod-and-os-chowm-recursively
 // but using the more efficient WalkDir API
 func ChmodRecursively(root string, mode os.FileMode) error {

cmd/localstack/main.go

@@ -23,6 +23,7 @@ type LsOpts struct {
 	CodeArchives        string
 	HotReloadingPaths   []string
 	FileWatcherStrategy string
+	ChmodPaths          string
 	LocalstackIP        string
 	InitLogLevel        string
 	EdgePort            string
@@ -59,6 +60,7 @@ func InitLsOpts() *LsOpts {
 		EnableXRayTelemetry: os.Getenv("LOCALSTACK_ENABLE_XRAY_TELEMETRY"),
 		LocalstackIP:        os.Getenv("LOCALSTACK_HOSTNAME"),
 		PostInvokeWaitMS:    os.Getenv("LOCALSTACK_POST_INVOKE_WAIT_MS"),
+		ChmodPaths:          GetenvWithDefault("LOCALSTACK_CHMOD_PATHS", "[]"),
 	}
 }
 
@@ -73,12 +75,12 @@ func UnsetLsEnvs() {
 		"LOCALSTACK_USER",
 		"LOCALSTACK_CODE_ARCHIVES",
 		"LOCALSTACK_HOT_RELOADING_PATHS",
-		"LOCALSTACK_ENABLE_DNS_SERVER",
 		"LOCALSTACK_ENABLE_XRAY_TELEMETRY",
 		"LOCALSTACK_INIT_LOG_LEVEL",
 		"LOCALSTACK_POST_INVOKE_WAIT_MS",
 		"LOCALSTACK_FUNCTION_ACCOUNT_ID",
 		"LOCALSTACK_MAX_PAYLOAD_SIZE",
+		"LOCALSTACK_CHMOD_PATHS",
 
 		// Docker container ID
 		"HOSTNAME",
@@ -142,6 +144,10 @@ func main() {
 		log.Fatal("Failed to download code archives: " + err.Error())
 	}
 
+	if err := AdaptFilesystemPermissions(lsOpts.ChmodPaths); err != nil {
+		log.Warnln("Could not change file mode of code directories:", err)
+	}
+
 	// set file permissions of the tmp directory for better AWS parity
 	if err := ChmodRecursively("/tmp", 0700); err != nil {
 		log.Warnln("Could not change file mode recursively of directory /tmp:", err)