Add archive/zip from go1.7rc5 tag
In preparation to patch in some custom functionality (parallel compression and zero-decompress zip to zip copying) Change-Id: I96a36efc09c715f6b55290af40ebfdde9ae72e33
This commit is contained in:
Dan Willemsen
parent
1317701114
commit
25a4e07df8
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@ -0,0 +1,93 @@
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// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package zip_test
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import (
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"archive/zip"
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"bytes"
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"compress/flate"
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"fmt"
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"io"
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"log"
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"os"
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)
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func ExampleWriter() {
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// Create a buffer to write our archive to.
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buf := new(bytes.Buffer)
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// Create a new zip archive.
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w := zip.NewWriter(buf)
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// Add some files to the archive.
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var files = []struct {
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Name, Body string
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}{
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{"readme.txt", "This archive contains some text files."},
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{"gopher.txt", "Gopher names:\nGeorge\nGeoffrey\nGonzo"},
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{"todo.txt", "Get animal handling licence.\nWrite more examples."},
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}
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for _, file := range files {
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f, err := w.Create(file.Name)
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if err != nil {
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log.Fatal(err)
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}
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_, err = f.Write([]byte(file.Body))
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if err != nil {
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log.Fatal(err)
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}
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}
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// Make sure to check the error on Close.
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err := w.Close()
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if err != nil {
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log.Fatal(err)
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}
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}
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func ExampleReader() {
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// Open a zip archive for reading.
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r, err := zip.OpenReader("testdata/readme.zip")
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if err != nil {
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log.Fatal(err)
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}
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defer r.Close()
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// Iterate through the files in the archive,
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// printing some of their contents.
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for _, f := range r.File {
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fmt.Printf("Contents of %s:\n", f.Name)
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rc, err := f.Open()
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if err != nil {
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log.Fatal(err)
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}
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_, err = io.CopyN(os.Stdout, rc, 68)
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if err != nil {
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log.Fatal(err)
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}
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rc.Close()
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fmt.Println()
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}
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// Output:
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// Contents of README:
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// This is the source code repository for the Go programming language.
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}
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func ExampleWriter_RegisterCompressor() {
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// Override the default Deflate compressor with a higher compression level.
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// Create a buffer to write our archive to.
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buf := new(bytes.Buffer)
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// Create a new zip archive.
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w := zip.NewWriter(buf)
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// Register a custom Deflate compressor.
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w.RegisterCompressor(zip.Deflate, func(out io.Writer) (io.WriteCloser, error) {
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return flate.NewWriter(out, flate.BestCompression)
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})
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// Proceed to add files to w.
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}
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@ -0,0 +1,527 @@
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package zip
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import (
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"bufio"
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"encoding/binary"
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"errors"
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"fmt"
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"hash"
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"hash/crc32"
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"io"
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"os"
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)
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var (
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ErrFormat = errors.New("zip: not a valid zip file")
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ErrAlgorithm = errors.New("zip: unsupported compression algorithm")
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ErrChecksum = errors.New("zip: checksum error")
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)
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type Reader struct {
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r io.ReaderAt
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File []*File
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Comment string
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decompressors map[uint16]Decompressor
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}
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type ReadCloser struct {
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f *os.File
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Reader
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}
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type File struct {
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FileHeader
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zip *Reader
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zipr io.ReaderAt
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zipsize int64
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headerOffset int64
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}
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func (f *File) hasDataDescriptor() bool {
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return f.Flags&0x8 != 0
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}
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// OpenReader will open the Zip file specified by name and return a ReadCloser.
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func OpenReader(name string) (*ReadCloser, error) {
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f, err := os.Open(name)
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if err != nil {
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return nil, err
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}
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fi, err := f.Stat()
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if err != nil {
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f.Close()
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return nil, err
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}
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r := new(ReadCloser)
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if err := r.init(f, fi.Size()); err != nil {
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f.Close()
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return nil, err
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}
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r.f = f
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return r, nil
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}
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// NewReader returns a new Reader reading from r, which is assumed to
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// have the given size in bytes.
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func NewReader(r io.ReaderAt, size int64) (*Reader, error) {
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zr := new(Reader)
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if err := zr.init(r, size); err != nil {
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return nil, err
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}
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return zr, nil
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}
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func (z *Reader) init(r io.ReaderAt, size int64) error {
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end, err := readDirectoryEnd(r, size)
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if err != nil {
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return err
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}
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if end.directoryRecords > uint64(size)/fileHeaderLen {
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return fmt.Errorf("archive/zip: TOC declares impossible %d files in %d byte zip", end.directoryRecords, size)
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}
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z.r = r
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z.File = make([]*File, 0, end.directoryRecords)
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z.Comment = end.comment
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rs := io.NewSectionReader(r, 0, size)
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if _, err = rs.Seek(int64(end.directoryOffset), io.SeekStart); err != nil {
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return err
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}
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buf := bufio.NewReader(rs)
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// The count of files inside a zip is truncated to fit in a uint16.
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// Gloss over this by reading headers until we encounter
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// a bad one, and then only report a ErrFormat or UnexpectedEOF if
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// the file count modulo 65536 is incorrect.
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for {
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f := &File{zip: z, zipr: r, zipsize: size}
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err = readDirectoryHeader(f, buf)
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if err == ErrFormat || err == io.ErrUnexpectedEOF {
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break
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}
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if err != nil {
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return err
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}
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z.File = append(z.File, f)
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}
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if uint16(len(z.File)) != uint16(end.directoryRecords) { // only compare 16 bits here
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// Return the readDirectoryHeader error if we read
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// the wrong number of directory entries.
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return err
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}
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return nil
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}
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// RegisterDecompressor registers or overrides a custom decompressor for a
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// specific method ID. If a decompressor for a given method is not found,
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// Reader will default to looking up the decompressor at the package level.
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func (z *Reader) RegisterDecompressor(method uint16, dcomp Decompressor) {
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if z.decompressors == nil {
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z.decompressors = make(map[uint16]Decompressor)
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}
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z.decompressors[method] = dcomp
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}
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func (z *Reader) decompressor(method uint16) Decompressor {
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dcomp := z.decompressors[method]
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if dcomp == nil {
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dcomp = decompressor(method)
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}
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return dcomp
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}
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// Close closes the Zip file, rendering it unusable for I/O.
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func (rc *ReadCloser) Close() error {
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return rc.f.Close()
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}
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// DataOffset returns the offset of the file's possibly-compressed
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// data, relative to the beginning of the zip file.
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//
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// Most callers should instead use Open, which transparently
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// decompresses data and verifies checksums.
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func (f *File) DataOffset() (offset int64, err error) {
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bodyOffset, err := f.findBodyOffset()
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if err != nil {
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return
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}
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return f.headerOffset + bodyOffset, nil
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}
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// Open returns a ReadCloser that provides access to the File's contents.
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// Multiple files may be read concurrently.
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func (f *File) Open() (io.ReadCloser, error) {
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bodyOffset, err := f.findBodyOffset()
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if err != nil {
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return nil, err
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}
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size := int64(f.CompressedSize64)
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r := io.NewSectionReader(f.zipr, f.headerOffset+bodyOffset, size)
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dcomp := f.zip.decompressor(f.Method)
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if dcomp == nil {
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return nil, ErrAlgorithm
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}
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var rc io.ReadCloser = dcomp(r)
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var desr io.Reader
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if f.hasDataDescriptor() {
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desr = io.NewSectionReader(f.zipr, f.headerOffset+bodyOffset+size, dataDescriptorLen)
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}
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rc = &checksumReader{
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rc: rc,
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hash: crc32.NewIEEE(),
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f: f,
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desr: desr,
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}
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return rc, nil
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}
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type checksumReader struct {
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rc io.ReadCloser
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hash hash.Hash32
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nread uint64 // number of bytes read so far
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f *File
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desr io.Reader // if non-nil, where to read the data descriptor
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err error // sticky error
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}
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func (r *checksumReader) Read(b []byte) (n int, err error) {
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if r.err != nil {
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return 0, r.err
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}
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n, err = r.rc.Read(b)
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r.hash.Write(b[:n])
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r.nread += uint64(n)
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if err == nil {
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return
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}
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if err == io.EOF {
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if r.nread != r.f.UncompressedSize64 {
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return 0, io.ErrUnexpectedEOF
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}
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if r.desr != nil {
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if err1 := readDataDescriptor(r.desr, r.f); err1 != nil {
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if err1 == io.EOF {
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err = io.ErrUnexpectedEOF
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} else {
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err = err1
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}
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} else if r.hash.Sum32() != r.f.CRC32 {
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err = ErrChecksum
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}
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} else {
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// If there's not a data descriptor, we still compare
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// the CRC32 of what we've read against the file header
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// or TOC's CRC32, if it seems like it was set.
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if r.f.CRC32 != 0 && r.hash.Sum32() != r.f.CRC32 {
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err = ErrChecksum
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}
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}
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}
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r.err = err
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return
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}
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func (r *checksumReader) Close() error { return r.rc.Close() }
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// findBodyOffset does the minimum work to verify the file has a header
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// and returns the file body offset.
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func (f *File) findBodyOffset() (int64, error) {
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var buf [fileHeaderLen]byte
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if _, err := f.zipr.ReadAt(buf[:], f.headerOffset); err != nil {
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return 0, err
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}
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b := readBuf(buf[:])
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if sig := b.uint32(); sig != fileHeaderSignature {
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return 0, ErrFormat
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}
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b = b[22:] // skip over most of the header
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filenameLen := int(b.uint16())
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extraLen := int(b.uint16())
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return int64(fileHeaderLen + filenameLen + extraLen), nil
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}
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// readDirectoryHeader attempts to read a directory header from r.
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// It returns io.ErrUnexpectedEOF if it cannot read a complete header,
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// and ErrFormat if it doesn't find a valid header signature.
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func readDirectoryHeader(f *File, r io.Reader) error {
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var buf [directoryHeaderLen]byte
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if _, err := io.ReadFull(r, buf[:]); err != nil {
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return err
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}
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b := readBuf(buf[:])
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if sig := b.uint32(); sig != directoryHeaderSignature {
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return ErrFormat
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}
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f.CreatorVersion = b.uint16()
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f.ReaderVersion = b.uint16()
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f.Flags = b.uint16()
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f.Method = b.uint16()
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f.ModifiedTime = b.uint16()
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f.ModifiedDate = b.uint16()
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f.CRC32 = b.uint32()
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f.CompressedSize = b.uint32()
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f.UncompressedSize = b.uint32()
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f.CompressedSize64 = uint64(f.CompressedSize)
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f.UncompressedSize64 = uint64(f.UncompressedSize)
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filenameLen := int(b.uint16())
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extraLen := int(b.uint16())
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commentLen := int(b.uint16())
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b = b[4:] // skipped start disk number and internal attributes (2x uint16)
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f.ExternalAttrs = b.uint32()
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f.headerOffset = int64(b.uint32())
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d := make([]byte, filenameLen+extraLen+commentLen)
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if _, err := io.ReadFull(r, d); err != nil {
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return err
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}
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f.Name = string(d[:filenameLen])
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f.Extra = d[filenameLen : filenameLen+extraLen]
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f.Comment = string(d[filenameLen+extraLen:])
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needUSize := f.UncompressedSize == ^uint32(0)
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needCSize := f.CompressedSize == ^uint32(0)
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needHeaderOffset := f.headerOffset == int64(^uint32(0))
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if len(f.Extra) > 0 {
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// Best effort to find what we need.
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// Other zip authors might not even follow the basic format,
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// and we'll just ignore the Extra content in that case.
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b := readBuf(f.Extra)
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for len(b) >= 4 { // need at least tag and size
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tag := b.uint16()
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size := b.uint16()
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if int(size) > len(b) {
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break
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}
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if tag == zip64ExtraId {
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// update directory values from the zip64 extra block.
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// They should only be consulted if the sizes read earlier
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// are maxed out.
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// See golang.org/issue/13367.
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eb := readBuf(b[:size])
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if needUSize {
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needUSize = false
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if len(eb) < 8 {
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return ErrFormat
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}
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f.UncompressedSize64 = eb.uint64()
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}
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if needCSize {
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needCSize = false
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if len(eb) < 8 {
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return ErrFormat
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}
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f.CompressedSize64 = eb.uint64()
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}
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if needHeaderOffset {
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needHeaderOffset = false
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if len(eb) < 8 {
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return ErrFormat
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}
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f.headerOffset = int64(eb.uint64())
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}
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break
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}
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b = b[size:]
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}
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}
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// Assume that uncompressed size 2³²-1 could plausibly happen in
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// an old zip32 file that was sharding inputs into the largest chunks
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// possible (or is just malicious; search the web for 42.zip).
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// If needUSize is true still, it means we didn't see a zip64 extension.
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// As long as the compressed size is not also 2³²-1 (implausible)
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// and the header is not also 2³²-1 (equally implausible),
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// accept the uncompressed size 2³²-1 as valid.
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// If nothing else, this keeps archive/zip working with 42.zip.
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_ = needUSize
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if needCSize || needHeaderOffset {
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return ErrFormat
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}
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return nil
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}
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func readDataDescriptor(r io.Reader, f *File) error {
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var buf [dataDescriptorLen]byte
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// The spec says: "Although not originally assigned a
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// signature, the value 0x08074b50 has commonly been adopted
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// as a signature value for the data descriptor record.
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// Implementers should be aware that ZIP files may be
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// encountered with or without this signature marking data
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// descriptors and should account for either case when reading
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// ZIP files to ensure compatibility."
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//
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// dataDescriptorLen includes the size of the signature but
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// first read just those 4 bytes to see if it exists.
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if _, err := io.ReadFull(r, buf[:4]); err != nil {
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return err
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}
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off := 0
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maybeSig := readBuf(buf[:4])
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if maybeSig.uint32() != dataDescriptorSignature {
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// No data descriptor signature. Keep these four
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// bytes.
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off += 4
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}
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if _, err := io.ReadFull(r, buf[off:12]); err != nil {
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return err
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}
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b := readBuf(buf[:12])
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if b.uint32() != f.CRC32 {
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return ErrChecksum
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}
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// The two sizes that follow here can be either 32 bits or 64 bits
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// but the spec is not very clear on this and different
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// interpretations has been made causing incompatibilities. We
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// already have the sizes from the central directory so we can
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// just ignore these.
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return nil
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}
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func readDirectoryEnd(r io.ReaderAt, size int64) (dir *directoryEnd, err error) {
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// look for directoryEndSignature in the last 1k, then in the last 65k
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var buf []byte
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var directoryEndOffset int64
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for i, bLen := range []int64{1024, 65 * 1024} {
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if bLen > size {
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bLen = size
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}
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buf = make([]byte, int(bLen))
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if _, err := r.ReadAt(buf, size-bLen); err != nil && err != io.EOF {
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return nil, err
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}
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if p := findSignatureInBlock(buf); p >= 0 {
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buf = buf[p:]
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directoryEndOffset = size - bLen + int64(p)
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break
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}
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if i == 1 || bLen == size {
|
||||
return nil, ErrFormat
|
||||
}
|
||||
}
|
||||
|
||||
// read header into struct
|
||||
b := readBuf(buf[4:]) // skip signature
|
||||
d := &directoryEnd{
|
||||
diskNbr: uint32(b.uint16()),
|
||||
dirDiskNbr: uint32(b.uint16()),
|
||||
dirRecordsThisDisk: uint64(b.uint16()),
|
||||
directoryRecords: uint64(b.uint16()),
|
||||
directorySize: uint64(b.uint32()),
|
||||
directoryOffset: uint64(b.uint32()),
|
||||
commentLen: b.uint16(),
|
||||
}
|
||||
l := int(d.commentLen)
|
||||
if l > len(b) {
|
||||
return nil, errors.New("zip: invalid comment length")
|
||||
}
|
||||
d.comment = string(b[:l])
|
||||
|
||||
// These values mean that the file can be a zip64 file
|
||||
if d.directoryRecords == 0xffff || d.directorySize == 0xffff || d.directoryOffset == 0xffffffff {
|
||||
p, err := findDirectory64End(r, directoryEndOffset)
|
||||
if err == nil && p >= 0 {
|
||||
err = readDirectory64End(r, p, d)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
// Make sure directoryOffset points to somewhere in our file.
|
||||
if o := int64(d.directoryOffset); o < 0 || o >= size {
|
||||
return nil, ErrFormat
|
||||
}
|
||||
return d, nil
|
||||
}
|
||||
|
||||
// findDirectory64End tries to read the zip64 locator just before the
|
||||
// directory end and returns the offset of the zip64 directory end if
|
||||
// found.
|
||||
func findDirectory64End(r io.ReaderAt, directoryEndOffset int64) (int64, error) {
|
||||
locOffset := directoryEndOffset - directory64LocLen
|
||||
if locOffset < 0 {
|
||||
return -1, nil // no need to look for a header outside the file
|
||||
}
|
||||
buf := make([]byte, directory64LocLen)
|
||||
if _, err := r.ReadAt(buf, locOffset); err != nil {
|
||||
return -1, err
|
||||
}
|
||||
b := readBuf(buf)
|
||||
if sig := b.uint32(); sig != directory64LocSignature {
|
||||
return -1, nil
|
||||
}
|
||||
if b.uint32() != 0 { // number of the disk with the start of the zip64 end of central directory
|
||||
return -1, nil // the file is not a valid zip64-file
|
||||
}
|
||||
p := b.uint64() // relative offset of the zip64 end of central directory record
|
||||
if b.uint32() != 1 { // total number of disks
|
||||
return -1, nil // the file is not a valid zip64-file
|
||||
}
|
||||
return int64(p), nil
|
||||
}
|
||||
|
||||
// readDirectory64End reads the zip64 directory end and updates the
|
||||
// directory end with the zip64 directory end values.
|
||||
func readDirectory64End(r io.ReaderAt, offset int64, d *directoryEnd) (err error) {
|
||||
buf := make([]byte, directory64EndLen)
|
||||
if _, err := r.ReadAt(buf, offset); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
b := readBuf(buf)
|
||||
if sig := b.uint32(); sig != directory64EndSignature {
|
||||
return ErrFormat
|
||||
}
|
||||
|
||||
b = b[12:] // skip dir size, version and version needed (uint64 + 2x uint16)
|
||||
d.diskNbr = b.uint32() // number of this disk
|
||||
d.dirDiskNbr = b.uint32() // number of the disk with the start of the central directory
|
||||
d.dirRecordsThisDisk = b.uint64() // total number of entries in the central directory on this disk
|
||||
d.directoryRecords = b.uint64() // total number of entries in the central directory
|
||||
d.directorySize = b.uint64() // size of the central directory
|
||||
d.directoryOffset = b.uint64() // offset of start of central directory with respect to the starting disk number
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func findSignatureInBlock(b []byte) int {
|
||||
for i := len(b) - directoryEndLen; i >= 0; i-- {
|
||||
// defined from directoryEndSignature in struct.go
|
||||
if b[i] == 'P' && b[i+1] == 'K' && b[i+2] == 0x05 && b[i+3] == 0x06 {
|
||||
// n is length of comment
|
||||
n := int(b[i+directoryEndLen-2]) | int(b[i+directoryEndLen-1])<<8
|
||||
if n+directoryEndLen+i <= len(b) {
|
||||
return i
|
||||
}
|
||||
}
|
||||
}
|
||||
return -1
|
||||
}
|
||||
|
||||
type readBuf []byte
|
||||
|
||||
func (b *readBuf) uint16() uint16 {
|
||||
v := binary.LittleEndian.Uint16(*b)
|
||||
*b = (*b)[2:]
|
||||
return v
|
||||
}
|
||||
|
||||
func (b *readBuf) uint32() uint32 {
|
||||
v := binary.LittleEndian.Uint32(*b)
|
||||
*b = (*b)[4:]
|
||||
return v
|
||||
}
|
||||
|
||||
func (b *readBuf) uint64() uint64 {
|
||||
v := binary.LittleEndian.Uint64(*b)
|
||||
*b = (*b)[8:]
|
||||
return v
|
||||
}
|
||||
|
|
@ -0,0 +1,859 @@
|
|||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package zip
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"encoding/hex"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"regexp"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
type ZipTest struct {
|
||||
Name string
|
||||
Source func() (r io.ReaderAt, size int64) // if non-nil, used instead of testdata/<Name> file
|
||||
Comment string
|
||||
File []ZipTestFile
|
||||
Error error // the error that Opening this file should return
|
||||
}
|
||||
|
||||
type ZipTestFile struct {
|
||||
Name string
|
||||
Mode os.FileMode
|
||||
Mtime string // optional, modified time in format "mm-dd-yy hh:mm:ss"
|
||||
|
||||
// Information describing expected zip file content.
|
||||
// First, reading the entire content should produce the error ContentErr.
|
||||
// Second, if ContentErr==nil, the content should match Content.
|
||||
// If content is large, an alternative to setting Content is to set File,
|
||||
// which names a file in the testdata/ directory containing the
|
||||
// uncompressed expected content.
|
||||
// If content is very large, an alternative to setting Content or File
|
||||
// is to set Size, which will then be checked against the header-reported size
|
||||
// but will bypass the decompressing of the actual data.
|
||||
// This last option is used for testing very large (multi-GB) compressed files.
|
||||
ContentErr error
|
||||
Content []byte
|
||||
File string
|
||||
Size uint64
|
||||
}
|
||||
|
||||
// Caution: The Mtime values found for the test files should correspond to
|
||||
// the values listed with unzip -l <zipfile>. However, the values
|
||||
// listed by unzip appear to be off by some hours. When creating
|
||||
// fresh test files and testing them, this issue is not present.
|
||||
// The test files were created in Sydney, so there might be a time
|
||||
// zone issue. The time zone information does have to be encoded
|
||||
// somewhere, because otherwise unzip -l could not provide a different
|
||||
// time from what the archive/zip package provides, but there appears
|
||||
// to be no documentation about this.
|
||||
|
||||
var tests = []ZipTest{
|
||||
{
|
||||
Name: "test.zip",
|
||||
Comment: "This is a zipfile comment.",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "test.txt",
|
||||
Content: []byte("This is a test text file.\n"),
|
||||
Mtime: "09-05-10 12:12:02",
|
||||
Mode: 0644,
|
||||
},
|
||||
{
|
||||
Name: "gophercolor16x16.png",
|
||||
File: "gophercolor16x16.png",
|
||||
Mtime: "09-05-10 15:52:58",
|
||||
Mode: 0644,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "test-trailing-junk.zip",
|
||||
Comment: "This is a zipfile comment.",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "test.txt",
|
||||
Content: []byte("This is a test text file.\n"),
|
||||
Mtime: "09-05-10 12:12:02",
|
||||
Mode: 0644,
|
||||
},
|
||||
{
|
||||
Name: "gophercolor16x16.png",
|
||||
File: "gophercolor16x16.png",
|
||||
Mtime: "09-05-10 15:52:58",
|
||||
Mode: 0644,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "r.zip",
|
||||
Source: returnRecursiveZip,
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "r/r.zip",
|
||||
Content: rZipBytes(),
|
||||
Mtime: "03-04-10 00:24:16",
|
||||
Mode: 0666,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "symlink.zip",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "symlink",
|
||||
Content: []byte("../target"),
|
||||
Mode: 0777 | os.ModeSymlink,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "readme.zip",
|
||||
},
|
||||
{
|
||||
Name: "readme.notzip",
|
||||
Error: ErrFormat,
|
||||
},
|
||||
{
|
||||
Name: "dd.zip",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "filename",
|
||||
Content: []byte("This is a test textfile.\n"),
|
||||
Mtime: "02-02-11 13:06:20",
|
||||
Mode: 0666,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
// created in windows XP file manager.
|
||||
Name: "winxp.zip",
|
||||
File: crossPlatform,
|
||||
},
|
||||
{
|
||||
// created by Zip 3.0 under Linux
|
||||
Name: "unix.zip",
|
||||
File: crossPlatform,
|
||||
},
|
||||
{
|
||||
// created by Go, before we wrote the "optional" data
|
||||
// descriptor signatures (which are required by OS X)
|
||||
Name: "go-no-datadesc-sig.zip",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "foo.txt",
|
||||
Content: []byte("foo\n"),
|
||||
Mtime: "03-08-12 16:59:10",
|
||||
Mode: 0644,
|
||||
},
|
||||
{
|
||||
Name: "bar.txt",
|
||||
Content: []byte("bar\n"),
|
||||
Mtime: "03-08-12 16:59:12",
|
||||
Mode: 0644,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
// created by Go, after we wrote the "optional" data
|
||||
// descriptor signatures (which are required by OS X)
|
||||
Name: "go-with-datadesc-sig.zip",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "foo.txt",
|
||||
Content: []byte("foo\n"),
|
||||
Mode: 0666,
|
||||
},
|
||||
{
|
||||
Name: "bar.txt",
|
||||
Content: []byte("bar\n"),
|
||||
Mode: 0666,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "Bad-CRC32-in-data-descriptor",
|
||||
Source: returnCorruptCRC32Zip,
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "foo.txt",
|
||||
Content: []byte("foo\n"),
|
||||
Mode: 0666,
|
||||
ContentErr: ErrChecksum,
|
||||
},
|
||||
{
|
||||
Name: "bar.txt",
|
||||
Content: []byte("bar\n"),
|
||||
Mode: 0666,
|
||||
},
|
||||
},
|
||||
},
|
||||
// Tests that we verify (and accept valid) crc32s on files
|
||||
// with crc32s in their file header (not in data descriptors)
|
||||
{
|
||||
Name: "crc32-not-streamed.zip",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "foo.txt",
|
||||
Content: []byte("foo\n"),
|
||||
Mtime: "03-08-12 16:59:10",
|
||||
Mode: 0644,
|
||||
},
|
||||
{
|
||||
Name: "bar.txt",
|
||||
Content: []byte("bar\n"),
|
||||
Mtime: "03-08-12 16:59:12",
|
||||
Mode: 0644,
|
||||
},
|
||||
},
|
||||
},
|
||||
// Tests that we verify (and reject invalid) crc32s on files
|
||||
// with crc32s in their file header (not in data descriptors)
|
||||
{
|
||||
Name: "crc32-not-streamed.zip",
|
||||
Source: returnCorruptNotStreamedZip,
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "foo.txt",
|
||||
Content: []byte("foo\n"),
|
||||
Mtime: "03-08-12 16:59:10",
|
||||
Mode: 0644,
|
||||
ContentErr: ErrChecksum,
|
||||
},
|
||||
{
|
||||
Name: "bar.txt",
|
||||
Content: []byte("bar\n"),
|
||||
Mtime: "03-08-12 16:59:12",
|
||||
Mode: 0644,
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "zip64.zip",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "README",
|
||||
Content: []byte("This small file is in ZIP64 format.\n"),
|
||||
Mtime: "08-10-12 14:33:32",
|
||||
Mode: 0644,
|
||||
},
|
||||
},
|
||||
},
|
||||
// Another zip64 file with different Extras fields. (golang.org/issue/7069)
|
||||
{
|
||||
Name: "zip64-2.zip",
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "README",
|
||||
Content: []byte("This small file is in ZIP64 format.\n"),
|
||||
Mtime: "08-10-12 14:33:32",
|
||||
Mode: 0644,
|
||||
},
|
||||
},
|
||||
},
|
||||
// Largest possible non-zip64 file, with no zip64 header.
|
||||
{
|
||||
Name: "big.zip",
|
||||
Source: returnBigZipBytes,
|
||||
File: []ZipTestFile{
|
||||
{
|
||||
Name: "big.file",
|
||||
Content: nil,
|
||||
Size: 1<<32 - 1,
|
||||
Mode: 0666,
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
var crossPlatform = []ZipTestFile{
|
||||
{
|
||||
Name: "hello",
|
||||
Content: []byte("world \r\n"),
|
||||
Mode: 0666,
|
||||
},
|
||||
{
|
||||
Name: "dir/bar",
|
||||
Content: []byte("foo \r\n"),
|
||||
Mode: 0666,
|
||||
},
|
||||
{
|
||||
Name: "dir/empty/",
|
||||
Content: []byte{},
|
||||
Mode: os.ModeDir | 0777,
|
||||
},
|
||||
{
|
||||
Name: "readonly",
|
||||
Content: []byte("important \r\n"),
|
||||
Mode: 0444,
|
||||
},
|
||||
}
|
||||
|
||||
func TestReader(t *testing.T) {
|
||||
for _, zt := range tests {
|
||||
readTestZip(t, zt)
|
||||
}
|
||||
}
|
||||
|
||||
func readTestZip(t *testing.T, zt ZipTest) {
|
||||
var z *Reader
|
||||
var err error
|
||||
if zt.Source != nil {
|
||||
rat, size := zt.Source()
|
||||
z, err = NewReader(rat, size)
|
||||
} else {
|
||||
var rc *ReadCloser
|
||||
rc, err = OpenReader(filepath.Join("testdata", zt.Name))
|
||||
if err == nil {
|
||||
defer rc.Close()
|
||||
z = &rc.Reader
|
||||
}
|
||||
}
|
||||
if err != zt.Error {
|
||||
t.Errorf("%s: error=%v, want %v", zt.Name, err, zt.Error)
|
||||
return
|
||||
}
|
||||
|
||||
// bail if file is not zip
|
||||
if err == ErrFormat {
|
||||
return
|
||||
}
|
||||
|
||||
// bail here if no Files expected to be tested
|
||||
// (there may actually be files in the zip, but we don't care)
|
||||
if zt.File == nil {
|
||||
return
|
||||
}
|
||||
|
||||
if z.Comment != zt.Comment {
|
||||
t.Errorf("%s: comment=%q, want %q", zt.Name, z.Comment, zt.Comment)
|
||||
}
|
||||
if len(z.File) != len(zt.File) {
|
||||
t.Fatalf("%s: file count=%d, want %d", zt.Name, len(z.File), len(zt.File))
|
||||
}
|
||||
|
||||
// test read of each file
|
||||
for i, ft := range zt.File {
|
||||
readTestFile(t, zt, ft, z.File[i])
|
||||
}
|
||||
|
||||
// test simultaneous reads
|
||||
n := 0
|
||||
done := make(chan bool)
|
||||
for i := 0; i < 5; i++ {
|
||||
for j, ft := range zt.File {
|
||||
go func(j int, ft ZipTestFile) {
|
||||
readTestFile(t, zt, ft, z.File[j])
|
||||
done <- true
|
||||
}(j, ft)
|
||||
n++
|
||||
}
|
||||
}
|
||||
for ; n > 0; n-- {
|
||||
<-done
|
||||
}
|
||||
}
|
||||
|
||||
func readTestFile(t *testing.T, zt ZipTest, ft ZipTestFile, f *File) {
|
||||
if f.Name != ft.Name {
|
||||
t.Errorf("%s: name=%q, want %q", zt.Name, f.Name, ft.Name)
|
||||
}
|
||||
|
||||
if ft.Mtime != "" {
|
||||
mtime, err := time.Parse("01-02-06 15:04:05", ft.Mtime)
|
||||
if err != nil {
|
||||
t.Error(err)
|
||||
return
|
||||
}
|
||||
if ft := f.ModTime(); !ft.Equal(mtime) {
|
||||
t.Errorf("%s: %s: mtime=%s, want %s", zt.Name, f.Name, ft, mtime)
|
||||
}
|
||||
}
|
||||
|
||||
testFileMode(t, zt.Name, f, ft.Mode)
|
||||
|
||||
size := uint64(f.UncompressedSize)
|
||||
if size == uint32max {
|
||||
size = f.UncompressedSize64
|
||||
} else if size != f.UncompressedSize64 {
|
||||
t.Errorf("%v: UncompressedSize=%#x does not match UncompressedSize64=%#x", f.Name, size, f.UncompressedSize64)
|
||||
}
|
||||
|
||||
r, err := f.Open()
|
||||
if err != nil {
|
||||
t.Errorf("%s: %v", zt.Name, err)
|
||||
return
|
||||
}
|
||||
|
||||
// For very large files, just check that the size is correct.
|
||||
// The content is expected to be all zeros.
|
||||
// Don't bother uncompressing: too big.
|
||||
if ft.Content == nil && ft.File == "" && ft.Size > 0 {
|
||||
if size != ft.Size {
|
||||
t.Errorf("%v: uncompressed size %#x, want %#x", ft.Name, size, ft.Size)
|
||||
}
|
||||
r.Close()
|
||||
return
|
||||
}
|
||||
|
||||
var b bytes.Buffer
|
||||
_, err = io.Copy(&b, r)
|
||||
if err != ft.ContentErr {
|
||||
t.Errorf("%s: copying contents: %v (want %v)", zt.Name, err, ft.ContentErr)
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
r.Close()
|
||||
|
||||
if g := uint64(b.Len()); g != size {
|
||||
t.Errorf("%v: read %v bytes but f.UncompressedSize == %v", f.Name, g, size)
|
||||
}
|
||||
|
||||
var c []byte
|
||||
if ft.Content != nil {
|
||||
c = ft.Content
|
||||
} else if c, err = ioutil.ReadFile("testdata/" + ft.File); err != nil {
|
||||
t.Error(err)
|
||||
return
|
||||
}
|
||||
|
||||
if b.Len() != len(c) {
|
||||
t.Errorf("%s: len=%d, want %d", f.Name, b.Len(), len(c))
|
||||
return
|
||||
}
|
||||
|
||||
for i, b := range b.Bytes() {
|
||||
if b != c[i] {
|
||||
t.Errorf("%s: content[%d]=%q want %q", f.Name, i, b, c[i])
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func testFileMode(t *testing.T, zipName string, f *File, want os.FileMode) {
|
||||
mode := f.Mode()
|
||||
if want == 0 {
|
||||
t.Errorf("%s: %s mode: got %v, want none", zipName, f.Name, mode)
|
||||
} else if mode != want {
|
||||
t.Errorf("%s: %s mode: want %v, got %v", zipName, f.Name, want, mode)
|
||||
}
|
||||
}
|
||||
|
||||
func TestInvalidFiles(t *testing.T) {
|
||||
const size = 1024 * 70 // 70kb
|
||||
b := make([]byte, size)
|
||||
|
||||
// zeroes
|
||||
_, err := NewReader(bytes.NewReader(b), size)
|
||||
if err != ErrFormat {
|
||||
t.Errorf("zeroes: error=%v, want %v", err, ErrFormat)
|
||||
}
|
||||
|
||||
// repeated directoryEndSignatures
|
||||
sig := make([]byte, 4)
|
||||
binary.LittleEndian.PutUint32(sig, directoryEndSignature)
|
||||
for i := 0; i < size-4; i += 4 {
|
||||
copy(b[i:i+4], sig)
|
||||
}
|
||||
_, err = NewReader(bytes.NewReader(b), size)
|
||||
if err != ErrFormat {
|
||||
t.Errorf("sigs: error=%v, want %v", err, ErrFormat)
|
||||
}
|
||||
}
|
||||
|
||||
func messWith(fileName string, corrupter func(b []byte)) (r io.ReaderAt, size int64) {
|
||||
data, err := ioutil.ReadFile(filepath.Join("testdata", fileName))
|
||||
if err != nil {
|
||||
panic("Error reading " + fileName + ": " + err.Error())
|
||||
}
|
||||
corrupter(data)
|
||||
return bytes.NewReader(data), int64(len(data))
|
||||
}
|
||||
|
||||
func returnCorruptCRC32Zip() (r io.ReaderAt, size int64) {
|
||||
return messWith("go-with-datadesc-sig.zip", func(b []byte) {
|
||||
// Corrupt one of the CRC32s in the data descriptor:
|
||||
b[0x2d]++
|
||||
})
|
||||
}
|
||||
|
||||
func returnCorruptNotStreamedZip() (r io.ReaderAt, size int64) {
|
||||
return messWith("crc32-not-streamed.zip", func(b []byte) {
|
||||
// Corrupt foo.txt's final crc32 byte, in both
|
||||
// the file header and TOC. (0x7e -> 0x7f)
|
||||
b[0x11]++
|
||||
b[0x9d]++
|
||||
|
||||
// TODO(bradfitz): add a new test that only corrupts
|
||||
// one of these values, and verify that that's also an
|
||||
// error. Currently, the reader code doesn't verify the
|
||||
// fileheader and TOC's crc32 match if they're both
|
||||
// non-zero and only the second line above, the TOC,
|
||||
// is what matters.
|
||||
})
|
||||
}
|
||||
|
||||
// rZipBytes returns the bytes of a recursive zip file, without
|
||||
// putting it on disk and triggering certain virus scanners.
|
||||
func rZipBytes() []byte {
|
||||
s := `
|
||||
0000000 50 4b 03 04 14 00 00 00 08 00 08 03 64 3c f9 f4
|
||||
0000010 89 64 48 01 00 00 b8 01 00 00 07 00 00 00 72 2f
|
||||
0000020 72 2e 7a 69 70 00 25 00 da ff 50 4b 03 04 14 00
|
||||
0000030 00 00 08 00 08 03 64 3c f9 f4 89 64 48 01 00 00
|
||||
0000040 b8 01 00 00 07 00 00 00 72 2f 72 2e 7a 69 70 00
|
||||
0000050 2f 00 d0 ff 00 25 00 da ff 50 4b 03 04 14 00 00
|
||||
0000060 00 08 00 08 03 64 3c f9 f4 89 64 48 01 00 00 b8
|
||||
0000070 01 00 00 07 00 00 00 72 2f 72 2e 7a 69 70 00 2f
|
||||
0000080 00 d0 ff c2 54 8e 57 39 00 05 00 fa ff c2 54 8e
|
||||
0000090 57 39 00 05 00 fa ff 00 05 00 fa ff 00 14 00 eb
|
||||
00000a0 ff c2 54 8e 57 39 00 05 00 fa ff 00 05 00 fa ff
|
||||
00000b0 00 14 00 eb ff 42 88 21 c4 00 00 14 00 eb ff 42
|
||||
00000c0 88 21 c4 00 00 14 00 eb ff 42 88 21 c4 00 00 14
|
||||
00000d0 00 eb ff 42 88 21 c4 00 00 14 00 eb ff 42 88 21
|
||||
00000e0 c4 00 00 00 00 ff ff 00 00 00 ff ff 00 34 00 cb
|
||||
00000f0 ff 42 88 21 c4 00 00 00 00 ff ff 00 00 00 ff ff
|
||||
0000100 00 34 00 cb ff 42 e8 21 5e 0f 00 00 00 ff ff 0a
|
||||
0000110 f0 66 64 12 61 c0 15 dc e8 a0 48 bf 48 af 2a b3
|
||||
0000120 20 c0 9b 95 0d c4 67 04 42 53 06 06 06 40 00 06
|
||||
0000130 00 f9 ff 6d 01 00 00 00 00 42 e8 21 5e 0f 00 00
|
||||
0000140 00 ff ff 0a f0 66 64 12 61 c0 15 dc e8 a0 48 bf
|
||||
0000150 48 af 2a b3 20 c0 9b 95 0d c4 67 04 42 53 06 06
|
||||
0000160 06 40 00 06 00 f9 ff 6d 01 00 00 00 00 50 4b 01
|
||||
0000170 02 14 00 14 00 00 00 08 00 08 03 64 3c f9 f4 89
|
||||
0000180 64 48 01 00 00 b8 01 00 00 07 00 00 00 00 00 00
|
||||
0000190 00 00 00 00 00 00 00 00 00 00 00 72 2f 72 2e 7a
|
||||
00001a0 69 70 50 4b 05 06 00 00 00 00 01 00 01 00 35 00
|
||||
00001b0 00 00 6d 01 00 00 00 00`
|
||||
s = regexp.MustCompile(`[0-9a-f]{7}`).ReplaceAllString(s, "")
|
||||
s = regexp.MustCompile(`\s+`).ReplaceAllString(s, "")
|
||||
b, err := hex.DecodeString(s)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
func returnRecursiveZip() (r io.ReaderAt, size int64) {
|
||||
b := rZipBytes()
|
||||
return bytes.NewReader(b), int64(len(b))
|
||||
}
|
||||
|
||||
// biggestZipBytes returns the bytes of a zip file biggest.zip
|
||||
// that contains a zip file bigger.zip that contains a zip file
|
||||
// big.zip that contains big.file, which contains 2³²-1 zeros.
|
||||
// The big.zip file is interesting because it has no zip64 header,
|
||||
// much like the innermost zip files in the well-known 42.zip.
|
||||
//
|
||||
// biggest.zip was generated by changing isZip64 to use > uint32max
|
||||
// instead of >= uint32max and then running this program:
|
||||
//
|
||||
// package main
|
||||
//
|
||||
// import (
|
||||
// "archive/zip"
|
||||
// "bytes"
|
||||
// "io"
|
||||
// "io/ioutil"
|
||||
// "log"
|
||||
// )
|
||||
//
|
||||
// type zeros struct{}
|
||||
//
|
||||
// func (zeros) Read(b []byte) (int, error) {
|
||||
// for i := range b {
|
||||
// b[i] = 0
|
||||
// }
|
||||
// return len(b), nil
|
||||
// }
|
||||
//
|
||||
// func main() {
|
||||
// bigZip := makeZip("big.file", io.LimitReader(zeros{}, 1<<32-1))
|
||||
// if err := ioutil.WriteFile("/tmp/big.zip", bigZip, 0666); err != nil {
|
||||
// log.Fatal(err)
|
||||
// }
|
||||
//
|
||||
// biggerZip := makeZip("big.zip", bytes.NewReader(bigZip))
|
||||
// if err := ioutil.WriteFile("/tmp/bigger.zip", biggerZip, 0666); err != nil {
|
||||
// log.Fatal(err)
|
||||
// }
|
||||
//
|
||||
// biggestZip := makeZip("bigger.zip", bytes.NewReader(biggerZip))
|
||||
// if err := ioutil.WriteFile("/tmp/biggest.zip", biggestZip, 0666); err != nil {
|
||||
// log.Fatal(err)
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// func makeZip(name string, r io.Reader) []byte {
|
||||
// var buf bytes.Buffer
|
||||
// w := zip.NewWriter(&buf)
|
||||
// wf, err := w.Create(name)
|
||||
// if err != nil {
|
||||
// log.Fatal(err)
|
||||
// }
|
||||
// if _, err = io.Copy(wf, r); err != nil {
|
||||
// log.Fatal(err)
|
||||
// }
|
||||
// if err := w.Close(); err != nil {
|
||||
// log.Fatal(err)
|
||||
// }
|
||||
// return buf.Bytes()
|
||||
// }
|
||||
//
|
||||
// The 4 GB of zeros compresses to 4 MB, which compresses to 20 kB,
|
||||
// which compresses to 1252 bytes (in the hex dump below).
|
||||
//
|
||||
// It's here in hex for the same reason as rZipBytes above: to avoid
|
||||
// problems with on-disk virus scanners or other zip processors.
|
||||
//
|
||||
func biggestZipBytes() []byte {
|
||||
s := `
|
||||
0000000 50 4b 03 04 14 00 08 00 08 00 00 00 00 00 00 00
|
||||
0000010 00 00 00 00 00 00 00 00 00 00 0a 00 00 00 62 69
|
||||
0000020 67 67 65 72 2e 7a 69 70 ec dc 6b 4c 53 67 18 07
|
||||
0000030 f0 16 c5 ca 65 2e cb b8 94 20 61 1f 44 33 c7 cd
|
||||
0000040 c0 86 4a b5 c0 62 8a 61 05 c6 cd 91 b2 54 8c 1b
|
||||
0000050 63 8b 03 9c 1b 95 52 5a e3 a0 19 6c b2 05 59 44
|
||||
0000060 64 9d 73 83 71 11 46 61 14 b9 1d 14 09 4a c3 60
|
||||
0000070 2e 4c 6e a5 60 45 02 62 81 95 b6 94 9e 9e 77 e7
|
||||
0000080 d0 43 b6 f8 71 df 96 3c e7 a4 69 ce bf cf e9 79
|
||||
0000090 ce ef 79 3f bf f1 31 db b6 bb 31 76 92 e7 f3 07
|
||||
00000a0 8b fc 9c ca cc 08 cc cb cc 5e d2 1c 88 d9 7e bb
|
||||
00000b0 4f bb 3a 3f 75 f1 5d 7f 8f c2 68 67 77 8f 25 ff
|
||||
00000c0 84 e2 93 2d ef a4 95 3d 71 4e 2c b9 b0 87 c3 be
|
||||
00000d0 3d f8 a7 60 24 61 c5 ef ae 9e c8 6c 6d 4e 69 c8
|
||||
00000e0 67 65 34 f8 37 76 2d 76 5c 54 f3 95 65 49 c7 0f
|
||||
00000f0 18 71 4b 7e 5b 6a d1 79 47 61 41 b0 4e 2a 74 45
|
||||
0000100 43 58 12 b2 5a a5 c6 7d 68 55 88 d4 98 75 18 6d
|
||||
0000110 08 d1 1f 8f 5a 9e 96 ee 45 cf a4 84 4e 4b e8 50
|
||||
0000120 a7 13 d9 06 de 52 81 97 36 b2 d7 b8 fc 2b 5f 55
|
||||
0000130 23 1f 32 59 cf 30 27 fb e2 8a b9 de 45 dd 63 9c
|
||||
0000140 4b b5 8b 96 4c 7a 62 62 cc a1 a7 cf fa f1 fe dd
|
||||
0000150 54 62 11 bf 36 78 b3 c7 b1 b5 f2 61 4d 4e dd 66
|
||||
0000160 32 2e e6 70 34 5f f4 c9 e6 6c 43 6f da 6b c6 c3
|
||||
0000170 09 2c ce 09 57 7f d2 7e b4 23 ba 7c 1b 99 bc 22
|
||||
0000180 3e f1 de 91 2f e3 9c 1b 82 cc c2 84 39 aa e6 de
|
||||
0000190 b4 69 fc cc cb 72 a6 61 45 f0 d3 1d 26 19 7c 8d
|
||||
00001a0 29 c8 66 02 be 77 6a f9 3d 34 79 17 19 c8 96 24
|
||||
00001b0 a3 ac e4 dd 3b 1a 8e c6 fe 96 38 6b bf 67 5a 23
|
||||
00001c0 f4 16 f4 e6 8a b4 fc c2 cd bf 95 66 1d bb 35 aa
|
||||
00001d0 92 7d 66 d8 08 8d a5 1f 54 2a af 09 cf 61 ff d2
|
||||
00001e0 85 9d 8f b6 d7 88 07 4a 86 03 db 64 f3 d9 92 73
|
||||
00001f0 df ec a7 fc 23 4c 8d 83 79 63 2a d9 fd 8d b3 c8
|
||||
0000200 8f 7e d4 19 85 e6 8d 1c 76 f0 8b 58 32 fd 9a d6
|
||||
0000210 85 e2 48 ad c3 d5 60 6f 7e 22 dd ef 09 49 7c 7f
|
||||
0000220 3a 45 c3 71 b7 df f3 4c 63 fb b5 d9 31 5f 6e d6
|
||||
0000230 24 1d a4 4a fe 32 a7 5c 16 48 5c 3e 08 6b 8a d3
|
||||
0000240 25 1d a2 12 a5 59 24 ea 20 5f 52 6d ad 94 db 6b
|
||||
0000250 94 b9 5d eb 4b a7 5c 44 bb 1e f2 3c 6b cf 52 c9
|
||||
0000260 e9 e5 ba 06 b9 c4 e5 0a d0 00 0d d0 00 0d d0 00
|
||||
0000270 0d d0 00 0d d0 00 0d d0 00 0d d0 00 0d d0 00 0d
|
||||
0000280 d0 00 0d d0 00 0d d0 00 0d d0 00 0d d0 00 0d d0
|
||||
0000290 00 0d d0 00 0d d0 00 0d d0 00 0d d0 00 0d d0 00
|
||||
00002a0 0d d0 00 cd ff 9e 46 86 fa a7 7d 3a 43 d7 8e 10
|
||||
00002b0 52 e9 be e6 6e cf eb 9e 85 4d 65 ce cc 30 c1 44
|
||||
00002c0 c0 4e af bc 9c 6c 4b a0 d7 54 ff 1d d5 5c 89 fb
|
||||
00002d0 b5 34 7e c4 c2 9e f5 a0 f6 5b 7e 6e ca 73 c7 ef
|
||||
00002e0 5d be de f9 e8 81 eb a5 0a a5 63 54 2c d7 1c d1
|
||||
00002f0 89 17 85 f8 16 94 f2 8a b2 a3 f5 b6 6d df 75 cd
|
||||
0000300 90 dd 64 bd 5d 55 4e f2 55 19 1b b7 cc ef 1b ea
|
||||
0000310 2e 05 9c f4 aa 1e a8 cd a6 82 c7 59 0f 5e 9d e0
|
||||
0000320 bb fc 6c d6 99 23 eb 36 ad c6 c5 e1 d8 e1 e2 3e
|
||||
0000330 d9 90 5a f7 91 5d 6f bc 33 6d 98 47 d2 7c 2e 2f
|
||||
0000340 99 a4 25 72 85 49 2c be 0b 5b af 8f e5 6e 81 a6
|
||||
0000350 a3 5a 6f 39 53 3a ab 7a 8b 1e 26 f7 46 6c 7d 26
|
||||
0000360 53 b3 22 31 94 d3 83 f2 18 4d f5 92 33 27 53 97
|
||||
0000370 0f d3 e6 55 9c a6 c5 31 87 6f d3 f3 ae 39 6f 56
|
||||
0000380 10 7b ab 7e d0 b4 ca f2 b8 05 be 3f 0e 6e 5a 75
|
||||
0000390 ab 0c f5 37 0e ba 8e 75 71 7a aa ed 7a dd 6a 63
|
||||
00003a0 be 9b a0 97 27 6a 6f e7 d3 8b c4 7c ec d3 91 56
|
||||
00003b0 d9 ac 5e bf 16 42 2f 00 1f 93 a2 23 87 bd e2 59
|
||||
00003c0 a0 de 1a 66 c8 62 eb 55 8f 91 17 b4 61 42 7a 50
|
||||
00003d0 40 03 34 40 03 34 40 03 34 40 03 34 40 03 34 40
|
||||
00003e0 03 34 40 03 34 40 03 34 40 03 34 40 03 34 40 03
|
||||
00003f0 34 40 03 34 40 03 34 ff 85 86 90 8b ea 67 90 0d
|
||||
0000400 e1 42 1b d2 61 d6 79 ec fd 3e 44 28 a4 51 6c 5c
|
||||
0000410 fc d2 72 ca ba 82 18 46 16 61 cd 93 a9 0f d1 24
|
||||
0000420 17 99 e2 2c 71 16 84 0c c8 7a 13 0f 9a 5e c5 f0
|
||||
0000430 79 64 e2 12 4d c8 82 a1 81 19 2d aa 44 6d 87 54
|
||||
0000440 84 71 c1 f6 d4 ca 25 8c 77 b9 08 c7 c8 5e 10 8a
|
||||
0000450 8f 61 ed 8c ba 30 1f 79 9a c7 60 34 2b b9 8c f8
|
||||
0000460 18 a6 83 1b e3 9f ad 79 fe fd 1b 8b f1 fc 41 6f
|
||||
0000470 d4 13 1f e3 b8 83 ba 64 92 e7 eb e4 77 05 8f ba
|
||||
0000480 fa 3b 00 00 ff ff 50 4b 07 08 a6 18 b1 91 5e 04
|
||||
0000490 00 00 e4 47 00 00 50 4b 01 02 14 00 14 00 08 00
|
||||
00004a0 08 00 00 00 00 00 a6 18 b1 91 5e 04 00 00 e4 47
|
||||
00004b0 00 00 0a 00 00 00 00 00 00 00 00 00 00 00 00 00
|
||||
00004c0 00 00 00 00 62 69 67 67 65 72 2e 7a 69 70 50 4b
|
||||
00004d0 05 06 00 00 00 00 01 00 01 00 38 00 00 00 96 04
|
||||
00004e0 00 00 00 00`
|
||||
s = regexp.MustCompile(`[0-9a-f]{7}`).ReplaceAllString(s, "")
|
||||
s = regexp.MustCompile(`\s+`).ReplaceAllString(s, "")
|
||||
b, err := hex.DecodeString(s)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
func returnBigZipBytes() (r io.ReaderAt, size int64) {
|
||||
b := biggestZipBytes()
|
||||
for i := 0; i < 2; i++ {
|
||||
r, err := NewReader(bytes.NewReader(b), int64(len(b)))
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
f, err := r.File[0].Open()
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
b, err = ioutil.ReadAll(f)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
return bytes.NewReader(b), int64(len(b))
|
||||
}
|
||||
|
||||
func TestIssue8186(t *testing.T) {
|
||||
// Directory headers & data found in the TOC of a JAR file.
|
||||
dirEnts := []string{
|
||||
"PK\x01\x02\n\x00\n\x00\x00\b\x00\x004\x9d3?\xaa\x1b\x06\xf0\x81\x02\x00\x00\x81\x02\x00\x00-\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00res/drawable-xhdpi-v4/ic_actionbar_accept.png\xfe\xca\x00\x00\x00",
|
||||
"PK\x01\x02\n\x00\n\x00\x00\b\x00\x004\x9d3?\x90K\x89\xc7t\n\x00\x00t\n\x00\x00\x0e\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd1\x02\x00\x00resources.arsc\x00\x00\x00",
|
||||
"PK\x01\x02\x14\x00\x14\x00\b\b\b\x004\x9d3?\xff$\x18\xed3\x03\x00\x00\xb4\b\x00\x00\x13\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00t\r\x00\x00AndroidManifest.xml",
|
||||
"PK\x01\x02\x14\x00\x14\x00\b\b\b\x004\x9d3?\x14\xc5K\xab\x192\x02\x00\xc8\xcd\x04\x00\v\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe8\x10\x00\x00classes.dex",
|
||||
"PK\x01\x02\x14\x00\x14\x00\b\b\b\x004\x9d3?E\x96\nD\xac\x01\x00\x00P\x03\x00\x00&\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00:C\x02\x00res/layout/actionbar_set_wallpaper.xml",
|
||||
"PK\x01\x02\x14\x00\x14\x00\b\b\b\x004\x9d3?Ļ\x14\xe3\xd8\x01\x00\x00\xd8\x03\x00\x00 \x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00:E\x02\x00res/layout/wallpaper_cropper.xml",
|
||||
"PK\x01\x02\x14\x00\x14\x00\b\b\b\x004\x9d3?}\xc1\x15\x9eZ\x01\x00\x00!\x02\x00\x00\x14\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00`G\x02\x00META-INF/MANIFEST.MF",
|
||||
"PK\x01\x02\x14\x00\x14\x00\b\b\b\x004\x9d3?\xe6\x98Ьo\x01\x00\x00\x84\x02\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfcH\x02\x00META-INF/CERT.SF",
|
||||
"PK\x01\x02\x14\x00\x14\x00\b\b\b\x004\x9d3?\xbfP\x96b\x86\x04\x00\x00\xb2\x06\x00\x00\x11\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa9J\x02\x00META-INF/CERT.RSA",
|
||||
}
|
||||
for i, s := range dirEnts {
|
||||
var f File
|
||||
err := readDirectoryHeader(&f, strings.NewReader(s))
|
||||
if err != nil {
|
||||
t.Errorf("error reading #%d: %v", i, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Verify we return ErrUnexpectedEOF when length is short.
|
||||
func TestIssue10957(t *testing.T) {
|
||||
data := []byte("PK\x03\x040000000PK\x01\x0200000" +
|
||||
"0000000000000000000\x00" +
|
||||
"\x00\x00\x00\x00\x00000000000000PK\x01" +
|
||||
"\x020000000000000000000" +
|
||||
"00000\v\x00\x00\x00\x00\x00000000000" +
|
||||
"00000000000000PK\x01\x0200" +
|
||||
"00000000000000000000" +
|
||||
"00\v\x00\x00\x00\x00\x00000000000000" +
|
||||
"00000000000PK\x01\x020000<" +
|
||||
"0\x00\x0000000000000000\v\x00\v" +
|
||||
"\x00\x00\x00\x00\x0000000000\x00\x00\x00\x00000" +
|
||||
"00000000PK\x01\x0200000000" +
|
||||
"0000000000000000\v\x00\x00\x00" +
|
||||
"\x00\x0000PK\x05\x06000000\x05\x000000" +
|
||||
"\v\x00\x00\x00\x00\x00")
|
||||
z, err := NewReader(bytes.NewReader(data), int64(len(data)))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for i, f := range z.File {
|
||||
r, err := f.Open()
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
if f.UncompressedSize64 < 1e6 {
|
||||
n, err := io.Copy(ioutil.Discard, r)
|
||||
if i == 3 && err != io.ErrUnexpectedEOF {
|
||||
t.Errorf("File[3] error = %v; want io.ErrUnexpectedEOF", err)
|
||||
}
|
||||
if err == nil && uint64(n) != f.UncompressedSize64 {
|
||||
t.Errorf("file %d: bad size: copied=%d; want=%d", i, n, f.UncompressedSize64)
|
||||
}
|
||||
}
|
||||
r.Close()
|
||||
}
|
||||
}
|
||||
|
||||
// Verify the number of files is sane.
|
||||
func TestIssue10956(t *testing.T) {
|
||||
data := []byte("PK\x06\x06PK\x06\a0000\x00\x00\x00\x00\x00\x00\x00\x00" +
|
||||
"0000PK\x05\x06000000000000" +
|
||||
"0000\v\x00000\x00\x00\x00\x00\x00\x00\x000")
|
||||
_, err := NewReader(bytes.NewReader(data), int64(len(data)))
|
||||
const want = "TOC declares impossible 3472328296227680304 files in 57 byte"
|
||||
if err == nil && !strings.Contains(err.Error(), want) {
|
||||
t.Errorf("error = %v; want %q", err, want)
|
||||
}
|
||||
}
|
||||
|
||||
// Verify we return ErrUnexpectedEOF when reading truncated data descriptor.
|
||||
func TestIssue11146(t *testing.T) {
|
||||
data := []byte("PK\x03\x040000000000000000" +
|
||||
"000000\x01\x00\x00\x000\x01\x00\x00\xff\xff0000" +
|
||||
"0000000000000000PK\x01\x02" +
|
||||
"0000\b0\b\x00000000000000" +
|
||||
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x000000PK\x05\x06\x00\x00" +
|
||||
"\x00\x0000\x01\x0000008\x00\x00\x00\x00\x00")
|
||||
z, err := NewReader(bytes.NewReader(data), int64(len(data)))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
r, err := z.File[0].Open()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
_, err = ioutil.ReadAll(r)
|
||||
if err != io.ErrUnexpectedEOF {
|
||||
t.Errorf("File[0] error = %v; want io.ErrUnexpectedEOF", err)
|
||||
}
|
||||
r.Close()
|
||||
}
|
||||
|
||||
// Verify we do not treat non-zip64 archives as zip64
|
||||
func TestIssue12449(t *testing.T) {
|
||||
data := []byte{
|
||||
0x50, 0x4b, 0x03, 0x04, 0x14, 0x00, 0x08, 0x00,
|
||||
0x00, 0x00, 0x6b, 0xb4, 0xba, 0x46, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x03, 0x00, 0x18, 0x00, 0xca, 0x64,
|
||||
0x55, 0x75, 0x78, 0x0b, 0x00, 0x50, 0x4b, 0x05,
|
||||
0x06, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
|
||||
0x00, 0x49, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00,
|
||||
0x00, 0x31, 0x31, 0x31, 0x32, 0x32, 0x32, 0x0a,
|
||||
0x50, 0x4b, 0x07, 0x08, 0x1d, 0x88, 0x77, 0xb0,
|
||||
0x07, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00,
|
||||
0x50, 0x4b, 0x01, 0x02, 0x14, 0x03, 0x14, 0x00,
|
||||
0x08, 0x00, 0x00, 0x00, 0x6b, 0xb4, 0xba, 0x46,
|
||||
0x1d, 0x88, 0x77, 0xb0, 0x07, 0x00, 0x00, 0x00,
|
||||
0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x18, 0x00,
|
||||
0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0xa0, 0x81, 0x00, 0x00, 0x00, 0x00, 0xca, 0x64,
|
||||
0x55, 0x75, 0x78, 0x0b, 0x00, 0x50, 0x4b, 0x05,
|
||||
0x06, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
|
||||
0x00, 0x49, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00,
|
||||
0x00, 0x97, 0x2b, 0x49, 0x23, 0x05, 0xc5, 0x0b,
|
||||
0xa7, 0xd1, 0x52, 0xa2, 0x9c, 0x50, 0x4b, 0x06,
|
||||
0x07, 0xc8, 0x19, 0xc1, 0xaf, 0x94, 0x9c, 0x61,
|
||||
0x44, 0xbe, 0x94, 0x19, 0x42, 0x58, 0x12, 0xc6,
|
||||
0x5b, 0x50, 0x4b, 0x05, 0x06, 0x00, 0x00, 0x00,
|
||||
0x00, 0x01, 0x00, 0x01, 0x00, 0x69, 0x00, 0x00,
|
||||
0x00, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
}
|
||||
// Read in the archive.
|
||||
_, err := NewReader(bytes.NewReader([]byte(data)), int64(len(data)))
|
||||
if err != nil {
|
||||
t.Errorf("Error reading the archive: %v", err)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,153 @@
|
|||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package zip
|
||||
|
||||
import (
|
||||
"compress/flate"
|
||||
"errors"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"sync"
|
||||
)
|
||||
|
||||
// A Compressor returns a new compressing writer, writing to w.
|
||||
// The WriteCloser's Close method must be used to flush pending data to w.
|
||||
// The Compressor itself must be safe to invoke from multiple goroutines
|
||||
// simultaneously, but each returned writer will be used only by
|
||||
// one goroutine at a time.
|
||||
type Compressor func(w io.Writer) (io.WriteCloser, error)
|
||||
|
||||
// A Decompressor returns a new decompressing reader, reading from r.
|
||||
// The ReadCloser's Close method must be used to release associated resources.
|
||||
// The Decompressor itself must be safe to invoke from multiple goroutines
|
||||
// simultaneously, but each returned reader will be used only by
|
||||
// one goroutine at a time.
|
||||
type Decompressor func(r io.Reader) io.ReadCloser
|
||||
|
||||
var flateWriterPool sync.Pool
|
||||
|
||||
func newFlateWriter(w io.Writer) io.WriteCloser {
|
||||
fw, ok := flateWriterPool.Get().(*flate.Writer)
|
||||
if ok {
|
||||
fw.Reset(w)
|
||||
} else {
|
||||
fw, _ = flate.NewWriter(w, 5)
|
||||
}
|
||||
return &pooledFlateWriter{fw: fw}
|
||||
}
|
||||
|
||||
type pooledFlateWriter struct {
|
||||
mu sync.Mutex // guards Close and Write
|
||||
fw *flate.Writer
|
||||
}
|
||||
|
||||
func (w *pooledFlateWriter) Write(p []byte) (n int, err error) {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
if w.fw == nil {
|
||||
return 0, errors.New("Write after Close")
|
||||
}
|
||||
return w.fw.Write(p)
|
||||
}
|
||||
|
||||
func (w *pooledFlateWriter) Close() error {
|
||||
w.mu.Lock()
|
||||
defer w.mu.Unlock()
|
||||
var err error
|
||||
if w.fw != nil {
|
||||
err = w.fw.Close()
|
||||
flateWriterPool.Put(w.fw)
|
||||
w.fw = nil
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
var flateReaderPool sync.Pool
|
||||
|
||||
func newFlateReader(r io.Reader) io.ReadCloser {
|
||||
fr, ok := flateReaderPool.Get().(io.ReadCloser)
|
||||
if ok {
|
||||
fr.(flate.Resetter).Reset(r, nil)
|
||||
} else {
|
||||
fr = flate.NewReader(r)
|
||||
}
|
||||
return &pooledFlateReader{fr: fr}
|
||||
}
|
||||
|
||||
type pooledFlateReader struct {
|
||||
mu sync.Mutex // guards Close and Read
|
||||
fr io.ReadCloser
|
||||
}
|
||||
|
||||
func (r *pooledFlateReader) Read(p []byte) (n int, err error) {
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
if r.fr == nil {
|
||||
return 0, errors.New("Read after Close")
|
||||
}
|
||||
return r.fr.Read(p)
|
||||
}
|
||||
|
||||
func (r *pooledFlateReader) Close() error {
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
var err error
|
||||
if r.fr != nil {
|
||||
err = r.fr.Close()
|
||||
flateReaderPool.Put(r.fr)
|
||||
r.fr = nil
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
var (
|
||||
mu sync.RWMutex // guards compressor and decompressor maps
|
||||
|
||||
compressors = map[uint16]Compressor{
|
||||
Store: func(w io.Writer) (io.WriteCloser, error) { return &nopCloser{w}, nil },
|
||||
Deflate: func(w io.Writer) (io.WriteCloser, error) { return newFlateWriter(w), nil },
|
||||
}
|
||||
|
||||
decompressors = map[uint16]Decompressor{
|
||||
Store: ioutil.NopCloser,
|
||||
Deflate: newFlateReader,
|
||||
}
|
||||
)
|
||||
|
||||
// RegisterDecompressor allows custom decompressors for a specified method ID.
|
||||
// The common methods Store and Deflate are built in.
|
||||
func RegisterDecompressor(method uint16, dcomp Decompressor) {
|
||||
mu.Lock()
|
||||
defer mu.Unlock()
|
||||
|
||||
if _, ok := decompressors[method]; ok {
|
||||
panic("decompressor already registered")
|
||||
}
|
||||
decompressors[method] = dcomp
|
||||
}
|
||||
|
||||
// RegisterCompressor registers custom compressors for a specified method ID.
|
||||
// The common methods Store and Deflate are built in.
|
||||
func RegisterCompressor(method uint16, comp Compressor) {
|
||||
mu.Lock()
|
||||
defer mu.Unlock()
|
||||
|
||||
if _, ok := compressors[method]; ok {
|
||||
panic("compressor already registered")
|
||||
}
|
||||
compressors[method] = comp
|
||||
}
|
||||
|
||||
func compressor(method uint16) Compressor {
|
||||
mu.RLock()
|
||||
defer mu.RUnlock()
|
||||
return compressors[method]
|
||||
}
|
||||
|
||||
func decompressor(method uint16) Decompressor {
|
||||
mu.RLock()
|
||||
defer mu.RUnlock()
|
||||
return decompressors[method]
|
||||
}
|
||||
|
|
@ -0,0 +1,313 @@
|
|||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
/*
|
||||
Package zip provides support for reading and writing ZIP archives.
|
||||
|
||||
See: https://www.pkware.com/documents/casestudies/APPNOTE.TXT
|
||||
|
||||
This package does not support disk spanning.
|
||||
|
||||
A note about ZIP64:
|
||||
|
||||
To be backwards compatible the FileHeader has both 32 and 64 bit Size
|
||||
fields. The 64 bit fields will always contain the correct value and
|
||||
for normal archives both fields will be the same. For files requiring
|
||||
the ZIP64 format the 32 bit fields will be 0xffffffff and the 64 bit
|
||||
fields must be used instead.
|
||||
*/
|
||||
package zip
|
||||
|
||||
import (
|
||||
"os"
|
||||
"path"
|
||||
"time"
|
||||
)
|
||||
|
||||
// Compression methods.
|
||||
const (
|
||||
Store uint16 = 0
|
||||
Deflate uint16 = 8
|
||||
)
|
||||
|
||||
const (
|
||||
fileHeaderSignature = 0x04034b50
|
||||
directoryHeaderSignature = 0x02014b50
|
||||
directoryEndSignature = 0x06054b50
|
||||
directory64LocSignature = 0x07064b50
|
||||
directory64EndSignature = 0x06064b50
|
||||
dataDescriptorSignature = 0x08074b50 // de-facto standard; required by OS X Finder
|
||||
fileHeaderLen = 30 // + filename + extra
|
||||
directoryHeaderLen = 46 // + filename + extra + comment
|
||||
directoryEndLen = 22 // + comment
|
||||
dataDescriptorLen = 16 // four uint32: descriptor signature, crc32, compressed size, size
|
||||
dataDescriptor64Len = 24 // descriptor with 8 byte sizes
|
||||
directory64LocLen = 20 //
|
||||
directory64EndLen = 56 // + extra
|
||||
|
||||
// Constants for the first byte in CreatorVersion
|
||||
creatorFAT = 0
|
||||
creatorUnix = 3
|
||||
creatorNTFS = 11
|
||||
creatorVFAT = 14
|
||||
creatorMacOSX = 19
|
||||
|
||||
// version numbers
|
||||
zipVersion20 = 20 // 2.0
|
||||
zipVersion45 = 45 // 4.5 (reads and writes zip64 archives)
|
||||
|
||||
// limits for non zip64 files
|
||||
uint16max = (1 << 16) - 1
|
||||
uint32max = (1 << 32) - 1
|
||||
|
||||
// extra header id's
|
||||
zip64ExtraId = 0x0001 // zip64 Extended Information Extra Field
|
||||
)
|
||||
|
||||
// FileHeader describes a file within a zip file.
|
||||
// See the zip spec for details.
|
||||
type FileHeader struct {
|
||||
// Name is the name of the file.
|
||||
// It must be a relative path: it must not start with a drive
|
||||
// letter (e.g. C:) or leading slash, and only forward slashes
|
||||
// are allowed.
|
||||
Name string
|
||||
|
||||
CreatorVersion uint16
|
||||
ReaderVersion uint16
|
||||
Flags uint16
|
||||
Method uint16
|
||||
ModifiedTime uint16 // MS-DOS time
|
||||
ModifiedDate uint16 // MS-DOS date
|
||||
CRC32 uint32
|
||||
CompressedSize uint32 // Deprecated: Use CompressedSize64 instead.
|
||||
UncompressedSize uint32 // Deprecated: Use UncompressedSize64 instead.
|
||||
CompressedSize64 uint64
|
||||
UncompressedSize64 uint64
|
||||
Extra []byte
|
||||
ExternalAttrs uint32 // Meaning depends on CreatorVersion
|
||||
Comment string
|
||||
}
|
||||
|
||||
// FileInfo returns an os.FileInfo for the FileHeader.
|
||||
func (h *FileHeader) FileInfo() os.FileInfo {
|
||||
return headerFileInfo{h}
|
||||
}
|
||||
|
||||
// headerFileInfo implements os.FileInfo.
|
||||
type headerFileInfo struct {
|
||||
fh *FileHeader
|
||||
}
|
||||
|
||||
func (fi headerFileInfo) Name() string { return path.Base(fi.fh.Name) }
|
||||
func (fi headerFileInfo) Size() int64 {
|
||||
if fi.fh.UncompressedSize64 > 0 {
|
||||
return int64(fi.fh.UncompressedSize64)
|
||||
}
|
||||
return int64(fi.fh.UncompressedSize)
|
||||
}
|
||||
func (fi headerFileInfo) IsDir() bool { return fi.Mode().IsDir() }
|
||||
func (fi headerFileInfo) ModTime() time.Time { return fi.fh.ModTime() }
|
||||
func (fi headerFileInfo) Mode() os.FileMode { return fi.fh.Mode() }
|
||||
func (fi headerFileInfo) Sys() interface{} { return fi.fh }
|
||||
|
||||
// FileInfoHeader creates a partially-populated FileHeader from an
|
||||
// os.FileInfo.
|
||||
// Because os.FileInfo's Name method returns only the base name of
|
||||
// the file it describes, it may be necessary to modify the Name field
|
||||
// of the returned header to provide the full path name of the file.
|
||||
func FileInfoHeader(fi os.FileInfo) (*FileHeader, error) {
|
||||
size := fi.Size()
|
||||
fh := &FileHeader{
|
||||
Name: fi.Name(),
|
||||
UncompressedSize64: uint64(size),
|
||||
}
|
||||
fh.SetModTime(fi.ModTime())
|
||||
fh.SetMode(fi.Mode())
|
||||
if fh.UncompressedSize64 > uint32max {
|
||||
fh.UncompressedSize = uint32max
|
||||
} else {
|
||||
fh.UncompressedSize = uint32(fh.UncompressedSize64)
|
||||
}
|
||||
return fh, nil
|
||||
}
|
||||
|
||||
type directoryEnd struct {
|
||||
diskNbr uint32 // unused
|
||||
dirDiskNbr uint32 // unused
|
||||
dirRecordsThisDisk uint64 // unused
|
||||
directoryRecords uint64
|
||||
directorySize uint64
|
||||
directoryOffset uint64 // relative to file
|
||||
commentLen uint16
|
||||
comment string
|
||||
}
|
||||
|
||||
// msDosTimeToTime converts an MS-DOS date and time into a time.Time.
|
||||
// The resolution is 2s.
|
||||
// See: http://msdn.microsoft.com/en-us/library/ms724247(v=VS.85).aspx
|
||||
func msDosTimeToTime(dosDate, dosTime uint16) time.Time {
|
||||
return time.Date(
|
||||
// date bits 0-4: day of month; 5-8: month; 9-15: years since 1980
|
||||
int(dosDate>>9+1980),
|
||||
time.Month(dosDate>>5&0xf),
|
||||
int(dosDate&0x1f),
|
||||
|
||||
// time bits 0-4: second/2; 5-10: minute; 11-15: hour
|
||||
int(dosTime>>11),
|
||||
int(dosTime>>5&0x3f),
|
||||
int(dosTime&0x1f*2),
|
||||
0, // nanoseconds
|
||||
|
||||
time.UTC,
|
||||
)
|
||||
}
|
||||
|
||||
// timeToMsDosTime converts a time.Time to an MS-DOS date and time.
|
||||
// The resolution is 2s.
|
||||
// See: http://msdn.microsoft.com/en-us/library/ms724274(v=VS.85).aspx
|
||||
func timeToMsDosTime(t time.Time) (fDate uint16, fTime uint16) {
|
||||
t = t.In(time.UTC)
|
||||
fDate = uint16(t.Day() + int(t.Month())<<5 + (t.Year()-1980)<<9)
|
||||
fTime = uint16(t.Second()/2 + t.Minute()<<5 + t.Hour()<<11)
|
||||
return
|
||||
}
|
||||
|
||||
// ModTime returns the modification time in UTC.
|
||||
// The resolution is 2s.
|
||||
func (h *FileHeader) ModTime() time.Time {
|
||||
return msDosTimeToTime(h.ModifiedDate, h.ModifiedTime)
|
||||
}
|
||||
|
||||
// SetModTime sets the ModifiedTime and ModifiedDate fields to the given time in UTC.
|
||||
// The resolution is 2s.
|
||||
func (h *FileHeader) SetModTime(t time.Time) {
|
||||
h.ModifiedDate, h.ModifiedTime = timeToMsDosTime(t)
|
||||
}
|
||||
|
||||
const (
|
||||
// Unix constants. The specification doesn't mention them,
|
||||
// but these seem to be the values agreed on by tools.
|
||||
s_IFMT = 0xf000
|
||||
s_IFSOCK = 0xc000
|
||||
s_IFLNK = 0xa000
|
||||
s_IFREG = 0x8000
|
||||
s_IFBLK = 0x6000
|
||||
s_IFDIR = 0x4000
|
||||
s_IFCHR = 0x2000
|
||||
s_IFIFO = 0x1000
|
||||
s_ISUID = 0x800
|
||||
s_ISGID = 0x400
|
||||
s_ISVTX = 0x200
|
||||
|
||||
msdosDir = 0x10
|
||||
msdosReadOnly = 0x01
|
||||
)
|
||||
|
||||
// Mode returns the permission and mode bits for the FileHeader.
|
||||
func (h *FileHeader) Mode() (mode os.FileMode) {
|
||||
switch h.CreatorVersion >> 8 {
|
||||
case creatorUnix, creatorMacOSX:
|
||||
mode = unixModeToFileMode(h.ExternalAttrs >> 16)
|
||||
case creatorNTFS, creatorVFAT, creatorFAT:
|
||||
mode = msdosModeToFileMode(h.ExternalAttrs)
|
||||
}
|
||||
if len(h.Name) > 0 && h.Name[len(h.Name)-1] == '/' {
|
||||
mode |= os.ModeDir
|
||||
}
|
||||
return mode
|
||||
}
|
||||
|
||||
// SetMode changes the permission and mode bits for the FileHeader.
|
||||
func (h *FileHeader) SetMode(mode os.FileMode) {
|
||||
h.CreatorVersion = h.CreatorVersion&0xff | creatorUnix<<8
|
||||
h.ExternalAttrs = fileModeToUnixMode(mode) << 16
|
||||
|
||||
// set MSDOS attributes too, as the original zip does.
|
||||
if mode&os.ModeDir != 0 {
|
||||
h.ExternalAttrs |= msdosDir
|
||||
}
|
||||
if mode&0200 == 0 {
|
||||
h.ExternalAttrs |= msdosReadOnly
|
||||
}
|
||||
}
|
||||
|
||||
// isZip64 reports whether the file size exceeds the 32 bit limit
|
||||
func (fh *FileHeader) isZip64() bool {
|
||||
return fh.CompressedSize64 >= uint32max || fh.UncompressedSize64 >= uint32max
|
||||
}
|
||||
|
||||
func msdosModeToFileMode(m uint32) (mode os.FileMode) {
|
||||
if m&msdosDir != 0 {
|
||||
mode = os.ModeDir | 0777
|
||||
} else {
|
||||
mode = 0666
|
||||
}
|
||||
if m&msdosReadOnly != 0 {
|
||||
mode &^= 0222
|
||||
}
|
||||
return mode
|
||||
}
|
||||
|
||||
func fileModeToUnixMode(mode os.FileMode) uint32 {
|
||||
var m uint32
|
||||
switch mode & os.ModeType {
|
||||
default:
|
||||
m = s_IFREG
|
||||
case os.ModeDir:
|
||||
m = s_IFDIR
|
||||
case os.ModeSymlink:
|
||||
m = s_IFLNK
|
||||
case os.ModeNamedPipe:
|
||||
m = s_IFIFO
|
||||
case os.ModeSocket:
|
||||
m = s_IFSOCK
|
||||
case os.ModeDevice:
|
||||
if mode&os.ModeCharDevice != 0 {
|
||||
m = s_IFCHR
|
||||
} else {
|
||||
m = s_IFBLK
|
||||
}
|
||||
}
|
||||
if mode&os.ModeSetuid != 0 {
|
||||
m |= s_ISUID
|
||||
}
|
||||
if mode&os.ModeSetgid != 0 {
|
||||
m |= s_ISGID
|
||||
}
|
||||
if mode&os.ModeSticky != 0 {
|
||||
m |= s_ISVTX
|
||||
}
|
||||
return m | uint32(mode&0777)
|
||||
}
|
||||
|
||||
func unixModeToFileMode(m uint32) os.FileMode {
|
||||
mode := os.FileMode(m & 0777)
|
||||
switch m & s_IFMT {
|
||||
case s_IFBLK:
|
||||
mode |= os.ModeDevice
|
||||
case s_IFCHR:
|
||||
mode |= os.ModeDevice | os.ModeCharDevice
|
||||
case s_IFDIR:
|
||||
mode |= os.ModeDir
|
||||
case s_IFIFO:
|
||||
mode |= os.ModeNamedPipe
|
||||
case s_IFLNK:
|
||||
mode |= os.ModeSymlink
|
||||
case s_IFREG:
|
||||
// nothing to do
|
||||
case s_IFSOCK:
|
||||
mode |= os.ModeSocket
|
||||
}
|
||||
if m&s_ISGID != 0 {
|
||||
mode |= os.ModeSetgid
|
||||
}
|
||||
if m&s_ISUID != 0 {
|
||||
mode |= os.ModeSetuid
|
||||
}
|
||||
if m&s_ISVTX != 0 {
|
||||
mode |= os.ModeSticky
|
||||
}
|
||||
return mode
|
||||
}
|
||||
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
After Width: | Height: | Size: 785 B |
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
|
@ -0,0 +1,392 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package zip
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"hash"
|
||||
"hash/crc32"
|
||||
"io"
|
||||
)
|
||||
|
||||
// TODO(adg): support zip file comments
|
||||
|
||||
// Writer implements a zip file writer.
|
||||
type Writer struct {
|
||||
cw *countWriter
|
||||
dir []*header
|
||||
last *fileWriter
|
||||
closed bool
|
||||
compressors map[uint16]Compressor
|
||||
}
|
||||
|
||||
type header struct {
|
||||
*FileHeader
|
||||
offset uint64
|
||||
}
|
||||
|
||||
// NewWriter returns a new Writer writing a zip file to w.
|
||||
func NewWriter(w io.Writer) *Writer {
|
||||
return &Writer{cw: &countWriter{w: bufio.NewWriter(w)}}
|
||||
}
|
||||
|
||||
// SetOffset sets the offset of the beginning of the zip data within the
|
||||
// underlying writer. It should be used when the zip data is appended to an
|
||||
// existing file, such as a binary executable.
|
||||
// It must be called before any data is written.
|
||||
func (w *Writer) SetOffset(n int64) {
|
||||
if w.cw.count != 0 {
|
||||
panic("zip: SetOffset called after data was written")
|
||||
}
|
||||
w.cw.count = n
|
||||
}
|
||||
|
||||
// Flush flushes any buffered data to the underlying writer.
|
||||
// Calling Flush is not normally necessary; calling Close is sufficient.
|
||||
func (w *Writer) Flush() error {
|
||||
return w.cw.w.(*bufio.Writer).Flush()
|
||||
}
|
||||
|
||||
// Close finishes writing the zip file by writing the central directory.
|
||||
// It does not (and cannot) close the underlying writer.
|
||||
func (w *Writer) Close() error {
|
||||
if w.last != nil && !w.last.closed {
|
||||
if err := w.last.close(); err != nil {
|
||||
return err
|
||||
}
|
||||
w.last = nil
|
||||
}
|
||||
if w.closed {
|
||||
return errors.New("zip: writer closed twice")
|
||||
}
|
||||
w.closed = true
|
||||
|
||||
// write central directory
|
||||
start := w.cw.count
|
||||
for _, h := range w.dir {
|
||||
var buf [directoryHeaderLen]byte
|
||||
b := writeBuf(buf[:])
|
||||
b.uint32(uint32(directoryHeaderSignature))
|
||||
b.uint16(h.CreatorVersion)
|
||||
b.uint16(h.ReaderVersion)
|
||||
b.uint16(h.Flags)
|
||||
b.uint16(h.Method)
|
||||
b.uint16(h.ModifiedTime)
|
||||
b.uint16(h.ModifiedDate)
|
||||
b.uint32(h.CRC32)
|
||||
if h.isZip64() || h.offset >= uint32max {
|
||||
// the file needs a zip64 header. store maxint in both
|
||||
// 32 bit size fields (and offset later) to signal that the
|
||||
// zip64 extra header should be used.
|
||||
b.uint32(uint32max) // compressed size
|
||||
b.uint32(uint32max) // uncompressed size
|
||||
|
||||
// append a zip64 extra block to Extra
|
||||
var buf [28]byte // 2x uint16 + 3x uint64
|
||||
eb := writeBuf(buf[:])
|
||||
eb.uint16(zip64ExtraId)
|
||||
eb.uint16(24) // size = 3x uint64
|
||||
eb.uint64(h.UncompressedSize64)
|
||||
eb.uint64(h.CompressedSize64)
|
||||
eb.uint64(h.offset)
|
||||
h.Extra = append(h.Extra, buf[:]...)
|
||||
} else {
|
||||
b.uint32(h.CompressedSize)
|
||||
b.uint32(h.UncompressedSize)
|
||||
}
|
||||
b.uint16(uint16(len(h.Name)))
|
||||
b.uint16(uint16(len(h.Extra)))
|
||||
b.uint16(uint16(len(h.Comment)))
|
||||
b = b[4:] // skip disk number start and internal file attr (2x uint16)
|
||||
b.uint32(h.ExternalAttrs)
|
||||
if h.offset > uint32max {
|
||||
b.uint32(uint32max)
|
||||
} else {
|
||||
b.uint32(uint32(h.offset))
|
||||
}
|
||||
if _, err := w.cw.Write(buf[:]); err != nil {
|
||||
return err
|
||||
}
|
||||
if _, err := io.WriteString(w.cw, h.Name); err != nil {
|
||||
return err
|
||||
}
|
||||
if _, err := w.cw.Write(h.Extra); err != nil {
|
||||
return err
|
||||
}
|
||||
if _, err := io.WriteString(w.cw, h.Comment); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
end := w.cw.count
|
||||
|
||||
records := uint64(len(w.dir))
|
||||
size := uint64(end - start)
|
||||
offset := uint64(start)
|
||||
|
||||
if records > uint16max || size > uint32max || offset > uint32max {
|
||||
var buf [directory64EndLen + directory64LocLen]byte
|
||||
b := writeBuf(buf[:])
|
||||
|
||||
// zip64 end of central directory record
|
||||
b.uint32(directory64EndSignature)
|
||||
b.uint64(directory64EndLen - 12) // length minus signature (uint32) and length fields (uint64)
|
||||
b.uint16(zipVersion45) // version made by
|
||||
b.uint16(zipVersion45) // version needed to extract
|
||||
b.uint32(0) // number of this disk
|
||||
b.uint32(0) // number of the disk with the start of the central directory
|
||||
b.uint64(records) // total number of entries in the central directory on this disk
|
||||
b.uint64(records) // total number of entries in the central directory
|
||||
b.uint64(size) // size of the central directory
|
||||
b.uint64(offset) // offset of start of central directory with respect to the starting disk number
|
||||
|
||||
// zip64 end of central directory locator
|
||||
b.uint32(directory64LocSignature)
|
||||
b.uint32(0) // number of the disk with the start of the zip64 end of central directory
|
||||
b.uint64(uint64(end)) // relative offset of the zip64 end of central directory record
|
||||
b.uint32(1) // total number of disks
|
||||
|
||||
if _, err := w.cw.Write(buf[:]); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// store max values in the regular end record to signal that
|
||||
// that the zip64 values should be used instead
|
||||
records = uint16max
|
||||
size = uint32max
|
||||
offset = uint32max
|
||||
}
|
||||
|
||||
// write end record
|
||||
var buf [directoryEndLen]byte
|
||||
b := writeBuf(buf[:])
|
||||
b.uint32(uint32(directoryEndSignature))
|
||||
b = b[4:] // skip over disk number and first disk number (2x uint16)
|
||||
b.uint16(uint16(records)) // number of entries this disk
|
||||
b.uint16(uint16(records)) // number of entries total
|
||||
b.uint32(uint32(size)) // size of directory
|
||||
b.uint32(uint32(offset)) // start of directory
|
||||
// skipped size of comment (always zero)
|
||||
if _, err := w.cw.Write(buf[:]); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return w.cw.w.(*bufio.Writer).Flush()
|
||||
}
|
||||
|
||||
// Create adds a file to the zip file using the provided name.
|
||||
// It returns a Writer to which the file contents should be written.
|
||||
// The name must be a relative path: it must not start with a drive
|
||||
// letter (e.g. C:) or leading slash, and only forward slashes are
|
||||
// allowed.
|
||||
// The file's contents must be written to the io.Writer before the next
|
||||
// call to Create, CreateHeader, or Close.
|
||||
func (w *Writer) Create(name string) (io.Writer, error) {
|
||||
header := &FileHeader{
|
||||
Name: name,
|
||||
Method: Deflate,
|
||||
}
|
||||
return w.CreateHeader(header)
|
||||
}
|
||||
|
||||
// CreateHeader adds a file to the zip file using the provided FileHeader
|
||||
// for the file metadata.
|
||||
// It returns a Writer to which the file contents should be written.
|
||||
//
|
||||
// The file's contents must be written to the io.Writer before the next
|
||||
// call to Create, CreateHeader, or Close. The provided FileHeader fh
|
||||
// must not be modified after a call to CreateHeader.
|
||||
func (w *Writer) CreateHeader(fh *FileHeader) (io.Writer, error) {
|
||||
if w.last != nil && !w.last.closed {
|
||||
if err := w.last.close(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
if len(w.dir) > 0 && w.dir[len(w.dir)-1].FileHeader == fh {
|
||||
// See https://golang.org/issue/11144 confusion.
|
||||
return nil, errors.New("archive/zip: invalid duplicate FileHeader")
|
||||
}
|
||||
|
||||
fh.Flags |= 0x8 // we will write a data descriptor
|
||||
|
||||
fh.CreatorVersion = fh.CreatorVersion&0xff00 | zipVersion20 // preserve compatibility byte
|
||||
fh.ReaderVersion = zipVersion20
|
||||
|
||||
fw := &fileWriter{
|
||||
zipw: w.cw,
|
||||
compCount: &countWriter{w: w.cw},
|
||||
crc32: crc32.NewIEEE(),
|
||||
}
|
||||
comp := w.compressor(fh.Method)
|
||||
if comp == nil {
|
||||
return nil, ErrAlgorithm
|
||||
}
|
||||
var err error
|
||||
fw.comp, err = comp(fw.compCount)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
fw.rawCount = &countWriter{w: fw.comp}
|
||||
|
||||
h := &header{
|
||||
FileHeader: fh,
|
||||
offset: uint64(w.cw.count),
|
||||
}
|
||||
w.dir = append(w.dir, h)
|
||||
fw.header = h
|
||||
|
||||
if err := writeHeader(w.cw, fh); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
w.last = fw
|
||||
return fw, nil
|
||||
}
|
||||
|
||||
func writeHeader(w io.Writer, h *FileHeader) error {
|
||||
var buf [fileHeaderLen]byte
|
||||
b := writeBuf(buf[:])
|
||||
b.uint32(uint32(fileHeaderSignature))
|
||||
b.uint16(h.ReaderVersion)
|
||||
b.uint16(h.Flags)
|
||||
b.uint16(h.Method)
|
||||
b.uint16(h.ModifiedTime)
|
||||
b.uint16(h.ModifiedDate)
|
||||
b.uint32(0) // since we are writing a data descriptor crc32,
|
||||
b.uint32(0) // compressed size,
|
||||
b.uint32(0) // and uncompressed size should be zero
|
||||
b.uint16(uint16(len(h.Name)))
|
||||
b.uint16(uint16(len(h.Extra)))
|
||||
if _, err := w.Write(buf[:]); err != nil {
|
||||
return err
|
||||
}
|
||||
if _, err := io.WriteString(w, h.Name); err != nil {
|
||||
return err
|
||||
}
|
||||
_, err := w.Write(h.Extra)
|
||||
return err
|
||||
}
|
||||
|
||||
// RegisterCompressor registers or overrides a custom compressor for a specific
|
||||
// method ID. If a compressor for a given method is not found, Writer will
|
||||
// default to looking up the compressor at the package level.
|
||||
func (w *Writer) RegisterCompressor(method uint16, comp Compressor) {
|
||||
if w.compressors == nil {
|
||||
w.compressors = make(map[uint16]Compressor)
|
||||
}
|
||||
w.compressors[method] = comp
|
||||
}
|
||||
|
||||
func (w *Writer) compressor(method uint16) Compressor {
|
||||
comp := w.compressors[method]
|
||||
if comp == nil {
|
||||
comp = compressor(method)
|
||||
}
|
||||
return comp
|
||||
}
|
||||
|
||||
type fileWriter struct {
|
||||
*header
|
||||
zipw io.Writer
|
||||
rawCount *countWriter
|
||||
comp io.WriteCloser
|
||||
compCount *countWriter
|
||||
crc32 hash.Hash32
|
||||
closed bool
|
||||
}
|
||||
|
||||
func (w *fileWriter) Write(p []byte) (int, error) {
|
||||
if w.closed {
|
||||
return 0, errors.New("zip: write to closed file")
|
||||
}
|
||||
w.crc32.Write(p)
|
||||
return w.rawCount.Write(p)
|
||||
}
|
||||
|
||||
func (w *fileWriter) close() error {
|
||||
if w.closed {
|
||||
return errors.New("zip: file closed twice")
|
||||
}
|
||||
w.closed = true
|
||||
if err := w.comp.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// update FileHeader
|
||||
fh := w.header.FileHeader
|
||||
fh.CRC32 = w.crc32.Sum32()
|
||||
fh.CompressedSize64 = uint64(w.compCount.count)
|
||||
fh.UncompressedSize64 = uint64(w.rawCount.count)
|
||||
|
||||
if fh.isZip64() {
|
||||
fh.CompressedSize = uint32max
|
||||
fh.UncompressedSize = uint32max
|
||||
fh.ReaderVersion = zipVersion45 // requires 4.5 - File uses ZIP64 format extensions
|
||||
} else {
|
||||
fh.CompressedSize = uint32(fh.CompressedSize64)
|
||||
fh.UncompressedSize = uint32(fh.UncompressedSize64)
|
||||
}
|
||||
|
||||
// Write data descriptor. This is more complicated than one would
|
||||
// think, see e.g. comments in zipfile.c:putextended() and
|
||||
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7073588.
|
||||
// The approach here is to write 8 byte sizes if needed without
|
||||
// adding a zip64 extra in the local header (too late anyway).
|
||||
var buf []byte
|
||||
if fh.isZip64() {
|
||||
buf = make([]byte, dataDescriptor64Len)
|
||||
} else {
|
||||
buf = make([]byte, dataDescriptorLen)
|
||||
}
|
||||
b := writeBuf(buf)
|
||||
b.uint32(dataDescriptorSignature) // de-facto standard, required by OS X
|
||||
b.uint32(fh.CRC32)
|
||||
if fh.isZip64() {
|
||||
b.uint64(fh.CompressedSize64)
|
||||
b.uint64(fh.UncompressedSize64)
|
||||
} else {
|
||||
b.uint32(fh.CompressedSize)
|
||||
b.uint32(fh.UncompressedSize)
|
||||
}
|
||||
_, err := w.zipw.Write(buf)
|
||||
return err
|
||||
}
|
||||
|
||||
type countWriter struct {
|
||||
w io.Writer
|
||||
count int64
|
||||
}
|
||||
|
||||
func (w *countWriter) Write(p []byte) (int, error) {
|
||||
n, err := w.w.Write(p)
|
||||
w.count += int64(n)
|
||||
return n, err
|
||||
}
|
||||
|
||||
type nopCloser struct {
|
||||
io.Writer
|
||||
}
|
||||
|
||||
func (w nopCloser) Close() error {
|
||||
return nil
|
||||
}
|
||||
|
||||
type writeBuf []byte
|
||||
|
||||
func (b *writeBuf) uint16(v uint16) {
|
||||
binary.LittleEndian.PutUint16(*b, v)
|
||||
*b = (*b)[2:]
|
||||
}
|
||||
|
||||
func (b *writeBuf) uint32(v uint32) {
|
||||
binary.LittleEndian.PutUint32(*b, v)
|
||||
*b = (*b)[4:]
|
||||
}
|
||||
|
||||
func (b *writeBuf) uint64(v uint64) {
|
||||
binary.LittleEndian.PutUint64(*b, v)
|
||||
*b = (*b)[8:]
|
||||
}
|
||||
|
|
@ -0,0 +1,205 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package zip
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"math/rand"
|
||||
"os"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// TODO(adg): a more sophisticated test suite
|
||||
|
||||
type WriteTest struct {
|
||||
Name string
|
||||
Data []byte
|
||||
Method uint16
|
||||
Mode os.FileMode
|
||||
}
|
||||
|
||||
var writeTests = []WriteTest{
|
||||
{
|
||||
Name: "foo",
|
||||
Data: []byte("Rabbits, guinea pigs, gophers, marsupial rats, and quolls."),
|
||||
Method: Store,
|
||||
Mode: 0666,
|
||||
},
|
||||
{
|
||||
Name: "bar",
|
||||
Data: nil, // large data set in the test
|
||||
Method: Deflate,
|
||||
Mode: 0644,
|
||||
},
|
||||
{
|
||||
Name: "setuid",
|
||||
Data: []byte("setuid file"),
|
||||
Method: Deflate,
|
||||
Mode: 0755 | os.ModeSetuid,
|
||||
},
|
||||
{
|
||||
Name: "setgid",
|
||||
Data: []byte("setgid file"),
|
||||
Method: Deflate,
|
||||
Mode: 0755 | os.ModeSetgid,
|
||||
},
|
||||
{
|
||||
Name: "symlink",
|
||||
Data: []byte("../link/target"),
|
||||
Method: Deflate,
|
||||
Mode: 0755 | os.ModeSymlink,
|
||||
},
|
||||
}
|
||||
|
||||
func TestWriter(t *testing.T) {
|
||||
largeData := make([]byte, 1<<17)
|
||||
for i := range largeData {
|
||||
largeData[i] = byte(rand.Int())
|
||||
}
|
||||
writeTests[1].Data = largeData
|
||||
defer func() {
|
||||
writeTests[1].Data = nil
|
||||
}()
|
||||
|
||||
// write a zip file
|
||||
buf := new(bytes.Buffer)
|
||||
w := NewWriter(buf)
|
||||
|
||||
for _, wt := range writeTests {
|
||||
testCreate(t, w, &wt)
|
||||
}
|
||||
|
||||
if err := w.Close(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// read it back
|
||||
r, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for i, wt := range writeTests {
|
||||
testReadFile(t, r.File[i], &wt)
|
||||
}
|
||||
}
|
||||
|
||||
func TestWriterOffset(t *testing.T) {
|
||||
largeData := make([]byte, 1<<17)
|
||||
for i := range largeData {
|
||||
largeData[i] = byte(rand.Int())
|
||||
}
|
||||
writeTests[1].Data = largeData
|
||||
defer func() {
|
||||
writeTests[1].Data = nil
|
||||
}()
|
||||
|
||||
// write a zip file
|
||||
buf := new(bytes.Buffer)
|
||||
existingData := []byte{1, 2, 3, 1, 2, 3, 1, 2, 3}
|
||||
n, _ := buf.Write(existingData)
|
||||
w := NewWriter(buf)
|
||||
w.SetOffset(int64(n))
|
||||
|
||||
for _, wt := range writeTests {
|
||||
testCreate(t, w, &wt)
|
||||
}
|
||||
|
||||
if err := w.Close(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// read it back
|
||||
r, err := NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for i, wt := range writeTests {
|
||||
testReadFile(t, r.File[i], &wt)
|
||||
}
|
||||
}
|
||||
|
||||
func TestWriterFlush(t *testing.T) {
|
||||
var buf bytes.Buffer
|
||||
w := NewWriter(struct{ io.Writer }{&buf})
|
||||
_, err := w.Create("foo")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if buf.Len() > 0 {
|
||||
t.Fatalf("Unexpected %d bytes already in buffer", buf.Len())
|
||||
}
|
||||
if err := w.Flush(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if buf.Len() == 0 {
|
||||
t.Fatal("No bytes written after Flush")
|
||||
}
|
||||
}
|
||||
|
||||
func testCreate(t *testing.T, w *Writer, wt *WriteTest) {
|
||||
header := &FileHeader{
|
||||
Name: wt.Name,
|
||||
Method: wt.Method,
|
||||
}
|
||||
if wt.Mode != 0 {
|
||||
header.SetMode(wt.Mode)
|
||||
}
|
||||
f, err := w.CreateHeader(header)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
_, err = f.Write(wt.Data)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func testReadFile(t *testing.T, f *File, wt *WriteTest) {
|
||||
if f.Name != wt.Name {
|
||||
t.Fatalf("File name: got %q, want %q", f.Name, wt.Name)
|
||||
}
|
||||
testFileMode(t, wt.Name, f, wt.Mode)
|
||||
rc, err := f.Open()
|
||||
if err != nil {
|
||||
t.Fatal("opening:", err)
|
||||
}
|
||||
b, err := ioutil.ReadAll(rc)
|
||||
if err != nil {
|
||||
t.Fatal("reading:", err)
|
||||
}
|
||||
err = rc.Close()
|
||||
if err != nil {
|
||||
t.Fatal("closing:", err)
|
||||
}
|
||||
if !bytes.Equal(b, wt.Data) {
|
||||
t.Errorf("File contents %q, want %q", b, wt.Data)
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkCompressedZipGarbage(b *testing.B) {
|
||||
b.ReportAllocs()
|
||||
var buf bytes.Buffer
|
||||
bigBuf := bytes.Repeat([]byte("a"), 1<<20)
|
||||
for i := 0; i <= b.N; i++ {
|
||||
buf.Reset()
|
||||
zw := NewWriter(&buf)
|
||||
for j := 0; j < 3; j++ {
|
||||
w, _ := zw.CreateHeader(&FileHeader{
|
||||
Name: "foo",
|
||||
Method: Deflate,
|
||||
})
|
||||
w.Write(bigBuf)
|
||||
}
|
||||
zw.Close()
|
||||
if i == 0 {
|
||||
// Reset the timer after the first time through.
|
||||
// This effectively discards the very large initial flate setup cost,
|
||||
// as well as the initialization of bigBuf.
|
||||
b.ResetTimer()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,450 @@
|
|||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// Tests that involve both reading and writing.
|
||||
|
||||
package zip
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"hash"
|
||||
"internal/testenv"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"sort"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func TestOver65kFiles(t *testing.T) {
|
||||
if testing.Short() && testenv.Builder() == "" {
|
||||
t.Skip("skipping in short mode")
|
||||
}
|
||||
buf := new(bytes.Buffer)
|
||||
w := NewWriter(buf)
|
||||
const nFiles = (1 << 16) + 42
|
||||
for i := 0; i < nFiles; i++ {
|
||||
_, err := w.CreateHeader(&FileHeader{
|
||||
Name: fmt.Sprintf("%d.dat", i),
|
||||
Method: Store, // avoid Issue 6136 and Issue 6138
|
||||
})
|
||||
if err != nil {
|
||||
t.Fatalf("creating file %d: %v", i, err)
|
||||
}
|
||||
}
|
||||
if err := w.Close(); err != nil {
|
||||
t.Fatalf("Writer.Close: %v", err)
|
||||
}
|
||||
s := buf.String()
|
||||
zr, err := NewReader(strings.NewReader(s), int64(len(s)))
|
||||
if err != nil {
|
||||
t.Fatalf("NewReader: %v", err)
|
||||
}
|
||||
if got := len(zr.File); got != nFiles {
|
||||
t.Fatalf("File contains %d files, want %d", got, nFiles)
|
||||
}
|
||||
for i := 0; i < nFiles; i++ {
|
||||
want := fmt.Sprintf("%d.dat", i)
|
||||
if zr.File[i].Name != want {
|
||||
t.Fatalf("File(%d) = %q, want %q", i, zr.File[i].Name, want)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestModTime(t *testing.T) {
|
||||
var testTime = time.Date(2009, time.November, 10, 23, 45, 58, 0, time.UTC)
|
||||
fh := new(FileHeader)
|
||||
fh.SetModTime(testTime)
|
||||
outTime := fh.ModTime()
|
||||
if !outTime.Equal(testTime) {
|
||||
t.Errorf("times don't match: got %s, want %s", outTime, testTime)
|
||||
}
|
||||
}
|
||||
|
||||
func testHeaderRoundTrip(fh *FileHeader, wantUncompressedSize uint32, wantUncompressedSize64 uint64, t *testing.T) {
|
||||
fi := fh.FileInfo()
|
||||
fh2, err := FileInfoHeader(fi)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if got, want := fh2.Name, fh.Name; got != want {
|
||||
t.Errorf("Name: got %s, want %s\n", got, want)
|
||||
}
|
||||
if got, want := fh2.UncompressedSize, wantUncompressedSize; got != want {
|
||||
t.Errorf("UncompressedSize: got %d, want %d\n", got, want)
|
||||
}
|
||||
if got, want := fh2.UncompressedSize64, wantUncompressedSize64; got != want {
|
||||
t.Errorf("UncompressedSize64: got %d, want %d\n", got, want)
|
||||
}
|
||||
if got, want := fh2.ModifiedTime, fh.ModifiedTime; got != want {
|
||||
t.Errorf("ModifiedTime: got %d, want %d\n", got, want)
|
||||
}
|
||||
if got, want := fh2.ModifiedDate, fh.ModifiedDate; got != want {
|
||||
t.Errorf("ModifiedDate: got %d, want %d\n", got, want)
|
||||
}
|
||||
|
||||
if sysfh, ok := fi.Sys().(*FileHeader); !ok && sysfh != fh {
|
||||
t.Errorf("Sys didn't return original *FileHeader")
|
||||
}
|
||||
}
|
||||
|
||||
func TestFileHeaderRoundTrip(t *testing.T) {
|
||||
fh := &FileHeader{
|
||||
Name: "foo.txt",
|
||||
UncompressedSize: 987654321,
|
||||
ModifiedTime: 1234,
|
||||
ModifiedDate: 5678,
|
||||
}
|
||||
testHeaderRoundTrip(fh, fh.UncompressedSize, uint64(fh.UncompressedSize), t)
|
||||
}
|
||||
|
||||
func TestFileHeaderRoundTrip64(t *testing.T) {
|
||||
fh := &FileHeader{
|
||||
Name: "foo.txt",
|
||||
UncompressedSize64: 9876543210,
|
||||
ModifiedTime: 1234,
|
||||
ModifiedDate: 5678,
|
||||
}
|
||||
testHeaderRoundTrip(fh, uint32max, fh.UncompressedSize64, t)
|
||||
}
|
||||
|
||||
type repeatedByte struct {
|
||||
off int64
|
||||
b byte
|
||||
n int64
|
||||
}
|
||||
|
||||
// rleBuffer is a run-length-encoded byte buffer.
|
||||
// It's an io.Writer (like a bytes.Buffer) and also an io.ReaderAt,
|
||||
// allowing random-access reads.
|
||||
type rleBuffer struct {
|
||||
buf []repeatedByte
|
||||
}
|
||||
|
||||
func (r *rleBuffer) Size() int64 {
|
||||
if len(r.buf) == 0 {
|
||||
return 0
|
||||
}
|
||||
last := &r.buf[len(r.buf)-1]
|
||||
return last.off + last.n
|
||||
}
|
||||
|
||||
func (r *rleBuffer) Write(p []byte) (n int, err error) {
|
||||
var rp *repeatedByte
|
||||
if len(r.buf) > 0 {
|
||||
rp = &r.buf[len(r.buf)-1]
|
||||
// Fast path, if p is entirely the same byte repeated.
|
||||
if lastByte := rp.b; len(p) > 0 && p[0] == lastByte {
|
||||
all := true
|
||||
for _, b := range p {
|
||||
if b != lastByte {
|
||||
all = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if all {
|
||||
rp.n += int64(len(p))
|
||||
return len(p), nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for _, b := range p {
|
||||
if rp == nil || rp.b != b {
|
||||
r.buf = append(r.buf, repeatedByte{r.Size(), b, 1})
|
||||
rp = &r.buf[len(r.buf)-1]
|
||||
} else {
|
||||
rp.n++
|
||||
}
|
||||
}
|
||||
return len(p), nil
|
||||
}
|
||||
|
||||
func (r *rleBuffer) ReadAt(p []byte, off int64) (n int, err error) {
|
||||
if len(p) == 0 {
|
||||
return
|
||||
}
|
||||
skipParts := sort.Search(len(r.buf), func(i int) bool {
|
||||
part := &r.buf[i]
|
||||
return part.off+part.n > off
|
||||
})
|
||||
parts := r.buf[skipParts:]
|
||||
if len(parts) > 0 {
|
||||
skipBytes := off - parts[0].off
|
||||
for len(parts) > 0 {
|
||||
part := parts[0]
|
||||
for i := skipBytes; i < part.n; i++ {
|
||||
if n == len(p) {
|
||||
return
|
||||
}
|
||||
p[n] = part.b
|
||||
n++
|
||||
}
|
||||
parts = parts[1:]
|
||||
skipBytes = 0
|
||||
}
|
||||
}
|
||||
if n != len(p) {
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Just testing the rleBuffer used in the Zip64 test above. Not used by the zip code.
|
||||
func TestRLEBuffer(t *testing.T) {
|
||||
b := new(rleBuffer)
|
||||
var all []byte
|
||||
writes := []string{"abcdeee", "eeeeeee", "eeeefghaaiii"}
|
||||
for _, w := range writes {
|
||||
b.Write([]byte(w))
|
||||
all = append(all, w...)
|
||||
}
|
||||
if len(b.buf) != 10 {
|
||||
t.Fatalf("len(b.buf) = %d; want 10", len(b.buf))
|
||||
}
|
||||
|
||||
for i := 0; i < len(all); i++ {
|
||||
for j := 0; j < len(all)-i; j++ {
|
||||
buf := make([]byte, j)
|
||||
n, err := b.ReadAt(buf, int64(i))
|
||||
if err != nil || n != len(buf) {
|
||||
t.Errorf("ReadAt(%d, %d) = %d, %v; want %d, nil", i, j, n, err, len(buf))
|
||||
}
|
||||
if !bytes.Equal(buf, all[i:i+j]) {
|
||||
t.Errorf("ReadAt(%d, %d) = %q; want %q", i, j, buf, all[i:i+j])
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// fakeHash32 is a dummy Hash32 that always returns 0.
|
||||
type fakeHash32 struct {
|
||||
hash.Hash32
|
||||
}
|
||||
|
||||
func (fakeHash32) Write(p []byte) (int, error) { return len(p), nil }
|
||||
func (fakeHash32) Sum32() uint32 { return 0 }
|
||||
|
||||
func TestZip64(t *testing.T) {
|
||||
if testing.Short() {
|
||||
t.Skip("slow test; skipping")
|
||||
}
|
||||
const size = 1 << 32 // before the "END\n" part
|
||||
buf := testZip64(t, size)
|
||||
testZip64DirectoryRecordLength(buf, t)
|
||||
}
|
||||
|
||||
func TestZip64EdgeCase(t *testing.T) {
|
||||
if testing.Short() {
|
||||
t.Skip("slow test; skipping")
|
||||
}
|
||||
// Test a zip file with uncompressed size 0xFFFFFFFF.
|
||||
// That's the magic marker for a 64-bit file, so even though
|
||||
// it fits in a 32-bit field we must use the 64-bit field.
|
||||
// Go 1.5 and earlier got this wrong,
|
||||
// writing an invalid zip file.
|
||||
const size = 1<<32 - 1 - int64(len("END\n")) // before the "END\n" part
|
||||
buf := testZip64(t, size)
|
||||
testZip64DirectoryRecordLength(buf, t)
|
||||
}
|
||||
|
||||
func testZip64(t testing.TB, size int64) *rleBuffer {
|
||||
const chunkSize = 1024
|
||||
chunks := int(size / chunkSize)
|
||||
// write size bytes plus "END\n" to a zip file
|
||||
buf := new(rleBuffer)
|
||||
w := NewWriter(buf)
|
||||
f, err := w.CreateHeader(&FileHeader{
|
||||
Name: "huge.txt",
|
||||
Method: Store,
|
||||
})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
f.(*fileWriter).crc32 = fakeHash32{}
|
||||
chunk := make([]byte, chunkSize)
|
||||
for i := range chunk {
|
||||
chunk[i] = '.'
|
||||
}
|
||||
for i := 0; i < chunks; i++ {
|
||||
_, err := f.Write(chunk)
|
||||
if err != nil {
|
||||
t.Fatal("write chunk:", err)
|
||||
}
|
||||
}
|
||||
if frag := int(size % chunkSize); frag > 0 {
|
||||
_, err := f.Write(chunk[:frag])
|
||||
if err != nil {
|
||||
t.Fatal("write chunk:", err)
|
||||
}
|
||||
}
|
||||
end := []byte("END\n")
|
||||
_, err = f.Write(end)
|
||||
if err != nil {
|
||||
t.Fatal("write end:", err)
|
||||
}
|
||||
if err := w.Close(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// read back zip file and check that we get to the end of it
|
||||
r, err := NewReader(buf, int64(buf.Size()))
|
||||
if err != nil {
|
||||
t.Fatal("reader:", err)
|
||||
}
|
||||
f0 := r.File[0]
|
||||
rc, err := f0.Open()
|
||||
if err != nil {
|
||||
t.Fatal("opening:", err)
|
||||
}
|
||||
rc.(*checksumReader).hash = fakeHash32{}
|
||||
for i := 0; i < chunks; i++ {
|
||||
_, err := io.ReadFull(rc, chunk)
|
||||
if err != nil {
|
||||
t.Fatal("read:", err)
|
||||
}
|
||||
}
|
||||
if frag := int(size % chunkSize); frag > 0 {
|
||||
_, err := io.ReadFull(rc, chunk[:frag])
|
||||
if err != nil {
|
||||
t.Fatal("read:", err)
|
||||
}
|
||||
}
|
||||
gotEnd, err := ioutil.ReadAll(rc)
|
||||
if err != nil {
|
||||
t.Fatal("read end:", err)
|
||||
}
|
||||
if !bytes.Equal(gotEnd, end) {
|
||||
t.Errorf("End of zip64 archive %q, want %q", gotEnd, end)
|
||||
}
|
||||
err = rc.Close()
|
||||
if err != nil {
|
||||
t.Fatal("closing:", err)
|
||||
}
|
||||
if size+int64(len("END\n")) >= 1<<32-1 {
|
||||
if got, want := f0.UncompressedSize, uint32(uint32max); got != want {
|
||||
t.Errorf("UncompressedSize %#x, want %#x", got, want)
|
||||
}
|
||||
}
|
||||
|
||||
if got, want := f0.UncompressedSize64, uint64(size)+uint64(len(end)); got != want {
|
||||
t.Errorf("UncompressedSize64 %#x, want %#x", got, want)
|
||||
}
|
||||
|
||||
return buf
|
||||
}
|
||||
|
||||
// Issue 9857
|
||||
func testZip64DirectoryRecordLength(buf *rleBuffer, t *testing.T) {
|
||||
d := make([]byte, 1024)
|
||||
if _, err := buf.ReadAt(d, buf.Size()-int64(len(d))); err != nil {
|
||||
t.Fatal("read:", err)
|
||||
}
|
||||
|
||||
sigOff := findSignatureInBlock(d)
|
||||
dirOff, err := findDirectory64End(buf, buf.Size()-int64(len(d))+int64(sigOff))
|
||||
if err != nil {
|
||||
t.Fatal("findDirectory64End:", err)
|
||||
}
|
||||
|
||||
d = make([]byte, directory64EndLen)
|
||||
if _, err := buf.ReadAt(d, dirOff); err != nil {
|
||||
t.Fatal("read:", err)
|
||||
}
|
||||
|
||||
b := readBuf(d)
|
||||
if sig := b.uint32(); sig != directory64EndSignature {
|
||||
t.Fatalf("Expected directory64EndSignature (%d), got %d", directory64EndSignature, sig)
|
||||
}
|
||||
|
||||
size := b.uint64()
|
||||
if size != directory64EndLen-12 {
|
||||
t.Fatalf("Expected length of %d, got %d", directory64EndLen-12, size)
|
||||
}
|
||||
}
|
||||
|
||||
func testValidHeader(h *FileHeader, t *testing.T) {
|
||||
var buf bytes.Buffer
|
||||
z := NewWriter(&buf)
|
||||
|
||||
f, err := z.CreateHeader(h)
|
||||
if err != nil {
|
||||
t.Fatalf("error creating header: %v", err)
|
||||
}
|
||||
if _, err := f.Write([]byte("hi")); err != nil {
|
||||
t.Fatalf("error writing content: %v", err)
|
||||
}
|
||||
if err := z.Close(); err != nil {
|
||||
t.Fatalf("error closing zip writer: %v", err)
|
||||
}
|
||||
|
||||
b := buf.Bytes()
|
||||
zf, err := NewReader(bytes.NewReader(b), int64(len(b)))
|
||||
if err != nil {
|
||||
t.Fatalf("got %v, expected nil", err)
|
||||
}
|
||||
zh := zf.File[0].FileHeader
|
||||
if zh.Name != h.Name || zh.Method != h.Method || zh.UncompressedSize64 != uint64(len("hi")) {
|
||||
t.Fatalf("got %q/%d/%d expected %q/%d/%d", zh.Name, zh.Method, zh.UncompressedSize64, h.Name, h.Method, len("hi"))
|
||||
}
|
||||
}
|
||||
|
||||
// Issue 4302.
|
||||
func TestHeaderInvalidTagAndSize(t *testing.T) {
|
||||
const timeFormat = "20060102T150405.000.txt"
|
||||
|
||||
ts := time.Now()
|
||||
filename := ts.Format(timeFormat)
|
||||
|
||||
h := FileHeader{
|
||||
Name: filename,
|
||||
Method: Deflate,
|
||||
Extra: []byte(ts.Format(time.RFC3339Nano)), // missing tag and len, but Extra is best-effort parsing
|
||||
}
|
||||
h.SetModTime(ts)
|
||||
|
||||
testValidHeader(&h, t)
|
||||
}
|
||||
|
||||
func TestHeaderTooShort(t *testing.T) {
|
||||
h := FileHeader{
|
||||
Name: "foo.txt",
|
||||
Method: Deflate,
|
||||
Extra: []byte{zip64ExtraId}, // missing size and second half of tag, but Extra is best-effort parsing
|
||||
}
|
||||
testValidHeader(&h, t)
|
||||
}
|
||||
|
||||
func TestHeaderIgnoredSize(t *testing.T) {
|
||||
h := FileHeader{
|
||||
Name: "foo.txt",
|
||||
Method: Deflate,
|
||||
Extra: []byte{zip64ExtraId & 0xFF, zip64ExtraId >> 8, 24, 0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8}, // bad size but shouldn't be consulted
|
||||
}
|
||||
testValidHeader(&h, t)
|
||||
}
|
||||
|
||||
// Issue 4393. It is valid to have an extra data header
|
||||
// which contains no body.
|
||||
func TestZeroLengthHeader(t *testing.T) {
|
||||
h := FileHeader{
|
||||
Name: "extadata.txt",
|
||||
Method: Deflate,
|
||||
Extra: []byte{
|
||||
85, 84, 5, 0, 3, 154, 144, 195, 77, // tag 21589 size 5
|
||||
85, 120, 0, 0, // tag 30805 size 0
|
||||
},
|
||||
}
|
||||
testValidHeader(&h, t)
|
||||
}
|
||||
|
||||
// Just benchmarking how fast the Zip64 test above is. Not related to
|
||||
// our zip performance, since the test above disabled CRC32 and flate.
|
||||
func BenchmarkZip64Test(b *testing.B) {
|
||||
for i := 0; i < b.N; i++ {
|
||||
testZip64(b, 1<<26)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue