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Added OpenFile to get a *squashfs.File instead of fs.File

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Added -e to extract only specific files/folders
Only require the filename for -l, -ll, and -lln
This commit is contained in:
Caleb Gardner
2025-05-21 01:11:24 -05:00
parent f32cb520dc
commit ada61a391c
2 changed files with 38 additions and 14 deletions
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cmd/go-unsquashfs/main.go
+32 -12
View File
@@ -36,7 +36,7 @@ func groupName(gid int, numeric bool) string {
return gs
}
func printEntry(root, path string, d fs.DirEntry, numeric bool) {
func printEntry(path string, d fs.DirEntry, numeric bool) {
fi, _ := d.Info()
sfi := fi.(squashfs.FileInfo)
owner := fmt.Sprintf("%s/%s",
@@ -50,7 +50,7 @@ func printEntry(root, path string, d fs.DirEntry, numeric bool) {
strings.ToLower(fi.Mode().String()),
owner, 26-len(owner), fi.Size(),
fi.ModTime().Format("2006-01-02 15:04"),
filepath.Join(root, path), link)
filepath.Join(path), link)
}
func main() {
@@ -60,8 +60,12 @@ func main() {
numeric := flag.Bool("lln", false, "List with attributes and numeric ids")
offset := flag.Int64("o", 0, "Offset")
ignore := flag.Bool("ip", false, "Ignore Permissions and extract all files/folders with 0755")
file := flag.String("e", "", "File or folder to extract")
flag.Parse()
if len(flag.Args()) < 2 {
if (*list || *long || *numeric) && flag.NArg() < 1 {
fmt.Println("Please provide a file name")
os.Exit(0)
} else if (!*list && !*long && !*numeric) && flag.NArg() < 2 {
fmt.Println("Please provide a file name and extraction path")
os.Exit(0)
}
@@ -73,26 +77,42 @@ func main() {
if err != nil {
panic(err)
}
extractFil := r.File()
if *file != "" {
extractFil, err = r.OpenFile(*file)
if err != nil {
panic(err)
}
}
if *list || *long || *numeric {
root := flag.Arg(1)
fs.WalkDir(r, ".", func(path string, d fs.DirEntry, err error) error {
if extractFil.IsDir() {
var filFs squashfs.FS
filFs, err = extractFil.FS()
if err != nil {
panic(err)
}
if *long || *numeric {
printEntry(root, path, d, *numeric)
} else {
fmt.Println(filepath.Join(root, path))
err = fs.WalkDir(filFs, ".", func(path string, d fs.DirEntry, err error) error {
if err != nil {
panic(err)
}
if *long || *numeric {
printEntry(path, d, *numeric)
} else {
fmt.Println(filepath.Clean(path))
}
return nil
})
if err != nil {
panic(err)
}
return nil
})
}
return
}
op := squashfs.DefaultOptions()
op.Verbose = *verbose
op.IgnorePerm = *ignore
n := time.Now()
err = r.ExtractWithOptions(flag.Arg(1), op)
err = extractFil.ExtractWithOptions(flag.Arg(1), op)
if err != nil {
panic(err)
}