Search code examples
gounzipzip

Unzip password zip using golang


I'm trying to decompress a zip file in golang (with password).

    r, err := zip.OpenReader("./path/to/the.zip")
    if err != nil {
        log.Fatal(err)
    }
    defer r.Close()

    for _, f := range r.File {
        if f.IsEncrypted() {
            f.SetPassword("$83?Lu{5nKbXxncjdH/_B)+}C`")
        }
        r, err := f.Open()
        if err != nil {
            log.Fatal(err)
        }

        buf, err := ioutil.ReadAll(r)
        if err != nil {
            log.Fatal(err)
        }
        defer r.Close()

        fmt.Printf("Size of %v: %v byte(s)\n", f.Name, len(buf))
    }

I'm at this point where using the repository https://github.com/yeka/zip I get the following output:

Size of cmxxxgapi/: 0 byte(s)
Size of cmxpi/vxxxxxxxx.yml: 326 byte(s)
Size of cmxxxpi/valxxxxxxe.yml: 379 byte(s)
Size of validations_javxxxo_mxxxxxxxon.yml: 722 byte(s)
Size of validations_xxx_mxxxxxxxxo.yml: 4322 byte(s)
Size of validations_xxxxse.yml: 65 byte(s)

How can I decompress all those files and have them accessible from my binary.

Thank you very much.

Ps. I can't use exec.


Solution

  • I finally managed to decompress the contents of the zip. I wasn't getting all the files correctly because it didn't differentiate from the paths to the files directly.

    I have solved it in the following way:

    r, err := zip.OpenReader("./path/to/the.zip")
    if err != nil {
        log.Fatal(err)
    }
    defer r.Close()
    
    for _, f := range r.File {
        if f.IsEncrypted() {
            f.SetPassword("$83?ksdfkjsdKJHJKjdH/_B)+}C`")
        }
        r, err := f.Open()
        if err != nil {
            log.Fatal(err)
        }
    
        buf, err := ioutil.ReadAll(r)
        if err != nil {
            log.Fatal(err)
        }
        defer r.Close()
    
        if f.FileInfo().IsDir() {
            // Make Folder
            os.MkdirAll(fpath, os.ModePerm)
        } else {
            ioutil.WriteFile("./sentinel/validations/"+f.Name, buf ,os.ModePerm)
        }
    }