fix(install): fixed installing symlinks

install.go

@@ -1,14 +1,16 @@
 package main
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
+	"github.com/codeclysm/extract/v3"
+	"io"
 	"io/fs"
 	"net"
 	"os"
 	"path/filepath"
-
-	"github.com/mholt/archiver/v4"
+	"strings"
 )
 
 func installMap(conn net.Conn, instance string, objmap map[string]interface{}) error {
@@ -34,19 +36,31 @@ func install(conn net.Conn, instance string, package_path string) error {
 		}
 	}
 
+	err = os.MkdirAll(unpack_path, 0775)
+	if err != nil {
+		return err
+	}
+
 	package_path, err = filepath.Abs(package_path)
 	if err != nil {
 		return err
 	}
 
-	fsys, err := archiver.FileSystem(nil, package_path, nil)
-	if err != nil {
-		return err
-	}
+	if is_dir, _ := is_directory(package_path); is_dir {
+		err = copy_directory(unpack_path, package_path)
+		if err != nil {
+			return err
+		}
+	} else {
+		archive, err := os.Open(package_path)
+		if err != nil {
+			return err
+		}
 
-	err = os.CopyFS(unpack_path, fsys)
-	if err != nil {
-		return err
+		err = extract.Archive(context.TODO(), archive, unpack_path, nil)
+		if err != nil {
+			return err
+		}
 	}
 
 	dir, _, err := find_infofile(unpack_path)
@@ -83,7 +97,12 @@ func install(conn net.Conn, instance string, package_path string) error {
 		}
 	}
 
-	err = os.CopyFS(package_path, os.DirFS(dir))
+	err = os.MkdirAll(package_path, 0775)
+	if err != nil {
+		return err
+	}
+
+	err = copy_directory(package_path, dir)
 	if err != nil {
 		return err
 	}
@@ -216,3 +235,65 @@ func find_infofile(source string) (string, string, error) {
 		return "", "", errors.New("no infofile found")
 	}
 }
+
+// Stolen from https://stackoverflow.com/a/72246196/19680146
+func copy_directory(dst, src string) error {
+
+	return filepath.Walk(src, func(path string, info fs.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+
+		// copy to this path
+		outpath := filepath.Join(dst, strings.TrimPrefix(path, src))
+
+		if info.IsDir() {
+			os.MkdirAll(outpath, info.Mode())
+			return nil // means recursive
+		}
+
+		// handle irregular files
+		if !info.Mode().IsRegular() {
+			switch info.Mode().Type() & os.ModeType {
+			case os.ModeSymlink:
+				link, err := os.Readlink(path)
+				if err != nil {
+					return err
+				}
+				return os.Symlink(link, outpath)
+			}
+			return nil
+		}
+
+		// copy contents of regular file efficiently
+
+		// open input
+		in, _ := os.Open(path)
+		if err != nil {
+			return err
+		}
+		defer in.Close()
+
+		// create output
+		fh, err := os.Create(outpath)
+		if err != nil {
+			return err
+		}
+		defer fh.Close()
+
+		// make it the same
+		fh.Chmod(info.Mode())
+
+		// copy content
+		_, err = io.Copy(fh, in)
+		return err
+	})
+}
+
+func is_directory(path string) (bool, error) {
+	fileInfo, err := os.Stat(path)
+	if err != nil {
+		return false, err
+	}
+	return fileInfo.IsDir(), err
+}