Golang 1.2:解压缩密码保护的zip文件? [英] Golang 1.2: Unzip password protected zip file?

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本文介绍了Golang 1.2:解压缩密码保护的zip文件?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

查看最新版本(1.2)zip包 - 如何解压缩受密码保护的文件(使用7zip,AES-256编码)?我没有看到在那里/如何添加这些信息。一个简单的例子会很棒!

解决方案

/ zip 包似乎只提供基本的zip功能。
我会使用7zip解压缩使用 os / exec 包的受密码保护的zip文件。



Online 7位用户指南



理解7zip的最佳指南是7-zip.chm,它位于windows的zip文件中命令行



以下代码不是最佳选择,但它会告诉您如何完成工作。



使用7zip提取密码保护zip的代码

pre $ func extractZipWithPassword(
fmt .Printf(将%s解压缩到目录`%s`\\\
,zip_path,extract_path)
commandString:= fmt.Sprintf(`7za e%s -o%s -p%s -aoa`,zip_path,extract_path,zip_password)
commandSlice:= strings.Fields(commandString)
fmt.Println(commandString)
c:= exec.Command(commandSlice [0],commandSlice [ 1:] ...)
e:= c.Run()
checkError(e)
}



示例程序

  //显示如何使用7zip提取passsword加密zip文件。 
// By Larry Battle< https://github.com/LarryBattle>
//回答http://stackoverflow.com/questions/20330210/golang-1-2-unzip-password-protected-zip-file
// 7-zip.chm - http:/ /sevenzip.sourceforge.jp/chm/cmdline/switches/index.htm
//有效的Golang - http://golang.org/doc/effective_go.html
包裹主

导入(
fmt
os
os / exec
路径/文件路径
字符串


var(
txt_content =创建示例文件。
txt_filename =name.txt
zip_filename =sample.zip
zip_password =42
zip_encryptType =AES256
base_path =./

test_path = filepath.Join(base_path,test)
src_path = filepath.Join test_path,src)
extract_path = filepath.Join(test_path,extract)
extracted_txt_path = filepath.Join(extract_path,txt_filename)
txt_path = filepath.Join(src_path,txt_filename)
zip_path = filepath.Join(src_path,zip_filename)

var txt_fileSize int64

func checkError(e error){
if e!= nil {
恐慌(e)
}
}
func setupTestDir(){
fmt.Printf(删除`%s`\\\
,test_path)
var e错误
os.Remove(test_path)
fmt.Printf(Creating`%s`,`%s`\\\
,extract_path,src_path)
e = os.MkdirAll(src_path, os.ModeDir | os.ModePerm)
checkError(e)
e = os.MkdirAll(extract_path,os.ModeDir | os.ModePerm)
checkError(e)
}
func createSampleFile(){
fmt.Println(Creating,txt_path)
文件,e:= os.Create(txt_path)
checkError(e)
推迟文件.close()
_,e = file.WriteString(txt_content)
checkError(e)
fi,e:= file.Stat()
txt_fileSize = fi.Size )

func createZipWithPassword(){
fmt.Println(Creating,zip_path)
commandString:= fmt.Sprintf(`7za a%s%s -p %s-mem =%s`,zip_path,txt_path,zip_password,zip_encryptType)
commandSlice:= strings.Fields(commandString)
fmt.Println(commandString)
c:= exec.Command (commandSlice [0],commandSlice [1:] ...)
e:= c.Run()
checkError(e)
}
func extractZipWithPassword(){
fmt.Printf(将`%s`解压缩到目录`%s`\\\
,zip_path,extract_path)
commandString:= fmt.Sprintf(`7za e%s -o%s -p %s-aoa,zip_path,extract_path,zip_password)
commandSlice:= strings.Fields(commandString)
fmt.Println(commandString)
c:= exec.Command(commandSlice [0] ,commandSlice [1:] ...)
e:= c.Run()
checkError(e)
}
func checkFor7Zip(){
_,e := exec.LookPath(7za)
if e!= nil {
fmt.Println(确保7zip已安装并包含您的路径。)
}
checkError(e)
}
func checkExtractedFile(){
fmt.Println(Reading,extracted_txt_path)
文件e:= os.Open(extracted_txt_path)
checkError(e)
推迟file.Close()
buf:= make([] byte,txt_fileSize)
n,e:= file.Read(buf)
checkError(e)
if!strings.Contains(string(buf [:n]),strings.Fields(txt_content)[0]){
panic(fmt.Sprintf(File`%s` is corrupted.\\\
,extracted_txt_path))
}
}
func main(){
fmt.Println(#Setup)
checkFor7Zip()
setupTestDir()
createSampleFile()
createZipWithPassword()
fmt.Println(#Answer to question ...)
extractZipWithPassword()
checkExtractedFile()
fmt.Println(完成。)
}
pre>

输出



 #设置
删除`test `
创建`test / extract`,`test / src`
创建test / src / name.txt
创建test / src / sample.zip
7za test / src /sample.zip test / src / name.txt -p42-mem = AES256
#对问题的回答...
将`test / src / sample.zip'解压缩到`test / extract`目录
7za e test /src/sample.zip -stat / extracted -p42-aoa
读取测试/提取/ name.txt
完成。


Looking at the latest release (1.2) zip package - how can I unzip a file that was password protected (using 7zip, AES-256 encoding)? I don't see where/how to add in that information. A simple example would be great!

解决方案

The archive/zip package seems to only provide basic zip functionality. I would use 7zip to unzip password protected zip files using the os/exec package.

Online 7-zip user guide

The best guide for understanding 7zip is 7-zip.chm, which is in the zip file for the windows command line.

The following code isn't optimal but it shows you how to get the job done.

Code for extracting a password protected zip using 7zip

func extractZipWithPassword() {
    fmt.Printf("Unzipping `%s` to directory `%s`\n", zip_path, extract_path)
    commandString := fmt.Sprintf(`7za e %s -o%s -p"%s" -aoa`, zip_path, extract_path, zip_password)
    commandSlice := strings.Fields(commandString)
    fmt.Println(commandString)
    c := exec.Command(commandSlice[0], commandSlice[1:]...)
    e := c.Run()
    checkError(e)
}

Example Program

// Shows how to extract an passsword encrypted zip file using 7zip.
// By Larry Battle <https://github.com/LarryBattle>
// Answer to http://stackoverflow.com/questions/20330210/golang-1-2-unzip-password-protected-zip-file
// 7-zip.chm - http://sevenzip.sourceforge.jp/chm/cmdline/switches/index.htm
// Effective Golang - http://golang.org/doc/effective_go.html
package main

import (
    "fmt"
    "os"
    "os/exec"
    "path/filepath"
    "strings"
)

var (
    txt_content     = "Sample file created."
    txt_filename    = "name.txt"
    zip_filename    = "sample.zip"
    zip_password    = "42"
    zip_encryptType = "AES256"
    base_path       = "./"

    test_path          = filepath.Join(base_path, "test")
    src_path           = filepath.Join(test_path, "src")
    extract_path       = filepath.Join(test_path, "extracted")
    extracted_txt_path = filepath.Join(extract_path, txt_filename)
    txt_path           = filepath.Join(src_path, txt_filename)
    zip_path           = filepath.Join(src_path, zip_filename)
)
var txt_fileSize int64

func checkError(e error) {
    if e != nil {
        panic(e)
    }
}
func setupTestDir() {
    fmt.Printf("Removing `%s`\n", test_path)
    var e error
    os.Remove(test_path)
    fmt.Printf("Creating `%s`,`%s`\n", extract_path, src_path)
    e = os.MkdirAll(src_path, os.ModeDir|os.ModePerm)
    checkError(e)
    e = os.MkdirAll(extract_path, os.ModeDir|os.ModePerm)
    checkError(e)
}
func createSampleFile() {
    fmt.Println("Creating", txt_path)
    file, e := os.Create(txt_path)
    checkError(e)
    defer file.Close()
    _, e = file.WriteString(txt_content)
    checkError(e)
    fi, e := file.Stat()
    txt_fileSize = fi.Size()
}
func createZipWithPassword() {
    fmt.Println("Creating", zip_path)
    commandString := fmt.Sprintf(`7za a %s %s -p"%s" -mem=%s`, zip_path, txt_path, zip_password, zip_encryptType)
    commandSlice := strings.Fields(commandString)
    fmt.Println(commandString)
    c := exec.Command(commandSlice[0], commandSlice[1:]...)
    e := c.Run()
    checkError(e)
}
func extractZipWithPassword() {
    fmt.Printf("Unzipping `%s` to directory `%s`\n", zip_path, extract_path)
    commandString := fmt.Sprintf(`7za e %s -o%s -p"%s" -aoa`, zip_path, extract_path, zip_password)
    commandSlice := strings.Fields(commandString)
    fmt.Println(commandString)
    c := exec.Command(commandSlice[0], commandSlice[1:]...)
    e := c.Run()
    checkError(e)
}
func checkFor7Zip() {
    _, e := exec.LookPath("7za")
    if e != nil {
        fmt.Println("Make sure 7zip is install and include your path.")
    }
    checkError(e)
}
func checkExtractedFile() {
    fmt.Println("Reading", extracted_txt_path)
    file, e := os.Open(extracted_txt_path)
    checkError(e)
    defer file.Close()
    buf := make([]byte, txt_fileSize)
    n, e := file.Read(buf)
    checkError(e)
    if !strings.Contains(string(buf[:n]), strings.Fields(txt_content)[0]) {
        panic(fmt.Sprintf("File`%s` is corrupted.\n", extracted_txt_path))
    }
}
func main() {
    fmt.Println("# Setup")
    checkFor7Zip()
    setupTestDir()
    createSampleFile()
    createZipWithPassword()
    fmt.Println("# Answer to question...")
    extractZipWithPassword()
    checkExtractedFile()
    fmt.Println("Done.")
}

Output

# Setup
Removing `test`
Creating `test/extracted`,`test/src`
Creating test/src/name.txt
Creating test/src/sample.zip
7za a test/src/sample.zip test/src/name.txt -p"42" -mem=AES256
# Answer to question...
Unzipping `test/src/sample.zip` to directory `test/extracted`
7za e test/src/sample.zip -otest/extracted -p"42" -aoa
Reading test/extracted/name.txt
Done.

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