Fixes an issue in utils/untar.go

Author: grussorusso

docs/writing-functions.md

@@ -69,8 +69,7 @@ WASI platform in Python at the following [link](https://github.com/brettcannon/c
 
 Serverledge assumes the structure of the `python.tar` file to be the following:
 
-- `func.py`: this can also be in a sub-directory and is specified in the
-  `handler` argument of the function creation
+- `func.py`: this can also be in a sub-directory and is specified in the `handler` argument of the function creation
 - `python.wasm`
 - `lib/`
 

internal/api/api.go

@@ -152,6 +152,7 @@ func CreateFunction(c echo.Context) error {
 	if f.Runtime != container.CUSTOM_RUNTIME && f.Runtime != container.WASI_RUNTIME {
 		_, ok := container.RuntimeToInfo[f.Runtime]
 		if !ok {
+			log.Printf("Creation request with invalid runtime: %s\n", f.Runtime)
 			return c.JSON(http.StatusNotFound, "Invalid runtime.")
 		}
 	}

internal/cli/cli.go

@@ -198,6 +198,7 @@ func create(cmd *cobra.Command, args []string) {
 	if runtime != "custom" {
 		var srcContent []byte
 		u, err := url.ParseRequestURI(src)
+		fmt.Println(u)
 		if err == nil && u.Scheme != "" && u.Host != "" {
 			// src is a URL
 			srcContent = []byte(src)

utils/untar.go

@@ -2,10 +2,10 @@ package utils
 
 import (
 	"archive/tar"
+	"fmt"
 	"io"
 	"os"
 	"path/filepath"
-	"strings"
 )
 
 // Modified from: https://github.com/golang/build/blob/master/internal/untar/untar.go
@@ -24,15 +24,7 @@ func Untar(r io.Reader, dir string) (err error) {
 			return err
 		}
 
-		// Strip the first component from the header name
-		components := strings.SplitN(header.Name, "/", 2)
-		var target string
-
-		if len(components) > 1 {
-			target = filepath.Join(dir, components[1]) // Skip the first component
-		} else {
-			target = filepath.Join(dir, header.Name) // No components to strip
-		}
+		target := filepath.Join(dir, header.Name)
 
 		// Check the file type
 		switch header.Typeflag {
@@ -42,6 +34,14 @@ func Untar(r io.Reader, dir string) (err error) {
 				return err
 			}
 		case tar.TypeReg:
+
+			// check if parent dirs exist
+			parentDir := filepath.Dir(target)
+			err := os.MkdirAll(parentDir, os.ModePerm) // os.ModePerm = 0777
+			if err != nil {
+				return fmt.Errorf("failed to create parent directories: %w", err)
+			}
+
 			// Create file
 			file, err := os.OpenFile(target, os.O_CREATE|os.O_RDWR, os.FileMode(header.Mode))
 			if err != nil {