saracen/zipextra
GitHub: saracen/zipextra
Stars: 7 | Forks: 1
# zipextra
[](http://godoc.org/github.com/saracen/zipextra)
`zipextra` is a library for encoding and decoding ZIP archive format's
"Extra Fields".
Contributions are welcome.
## Supported Fields
| Identifier | Name |
| ---------- | -------------------------- |
| `0x000a` | NTFS |
| `0x6375` | Info-ZIP's Unicode Comment |
| `0x7875` | Info-ZIP's New Unix |
### Example
func ExampleZipExtra() {
// create temporary file
w, err := ioutil.TempFile("", "zipextra-example")
if err != nil {
panic(err)
}
// create new zip writer
zw := zip.NewWriter(w)
// create a new zip file header
fh := &zip.FileHeader{Name: "test_file.txt"}
// add some extra fields
fh.Extra = append(fh.Extra, zipextra.NewInfoZIPNewUnix(big.NewInt(1000), big.NewInt(1000)).Encode()...)
fh.Extra = append(fh.Extra, zipextra.NewInfoZIPUnicodeComment("Hello, 世界").Encode()...)
// create the file
fw, err := zw.CreateHeader(fh)
if err != nil {
panic(err)
}
fw.Write([]byte("foobar"))
zw.Close()
// open the newly created zip
zr, err := zip.OpenReader(w.Name())
if err != nil {
panic(err)
}
defer zr.Close()
// parse extra fields
fields, err := zipextra.Parse(zr.File[0].Extra)
if err != nil {
panic(err)
}
// print extra field information
for id, field := range fields {
switch id {
case zipextra.ExtraFieldUnixN:
unix, _ := field.InfoZIPNewUnix()
fmt.Printf("UID: %d, GID: %d\n", unix.Uid, unix.Gid)
case zipextra.ExtraFieldUCom:
ucom, _ := field.InfoZIPUnicodeComment()
fmt.Printf("Comment: %s\n", ucom.Comment)
}
}
// Output:
// UID: 1000, GID: 1000
// Comment: Hello, 世界
}
标签：EVTX分析