利用ICSharpCode.SharpZipLib.dll解析 出错：“Wrong Local header signature: 0xFF8”

分析原因

利用ICSharpCode.SharpZipLib.dll解析APK时，进入APK的AndroidXml获取时出现报错

出错代码

using (ICSharpCode.SharpZipLib.Zip.ZipInputStream zip = new ICSharpCode.SharpZipLib.Zip.ZipInputStream(File.OpenRead(path))) 
{
  using (var filestream = new FileStream(path, FileMode.Open, FileAccess.Read)) 
  {
    ICSharpCode.SharpZipLib.Zip.ZipFile zipfile = new ICSharpCode.SharpZipLib.Zip.ZipFile(filestream);
    ICSharpCode.SharpZipLib.Zip.ZipEntry item;
        // 出错部分
    while ((item = zip.GetNextEntry()) != null) 
    {
      if (item.Name.ToLower() == "androidmanifest.xml") 
      {
        manifestData = new byte[50 * 1024];
        using (Stream strm = zipfile.GetInputStream(item)) 
        {
          strm.Read(manifestData, 0, manifestData.Length);
        }
      }
      if (item.Name.ToLower() == "resources.arsc") 
      {
        using (Stream strm = zipfile.GetInputStream(item)) 
        {
          using (BinaryReader s = new BinaryReader(strm)) 
          {
            resourcesData = s.ReadBytes((int)s.BaseStream.Length);
          }
        }
      }
    }
  }

解决方法

经过查阅资料，解决方法如下

using (ZipInputStream zip = new ZipInputStream(File.OpenRead(path))) 
{
  using (var filestream = new FileStream(path, FileMode.Open, FileAccess.Read)) 
  {
    System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
    ZipFile zipfile = new ZipFile(filestream);
        // 代码更换部分
    foreach (ZipEntry entry in zipfile) 
    {
      if (entry != null) 
      {
        if (entry.Name.ToLower() == "androidmanifest.xml") 
        {
          manifestData = new byte[50 * 1024];
          Stream strm = zipfile.GetInputStream(entry);
          strm.Read(manifestData, 0, manifestData.Length);
        }
        if (entry.Name.ToLower() == "resources.arsc") 
        {
          Stream strm = zipfile.GetInputStream(entry);
          using (BinaryReader s = new BinaryReader(strm)) 
          {
            resourcesData = s.ReadBytes((int)entry.Size);
          }
        }
      }
    }
  }
}

参考链接

​​Wrong Local header signature: 0xFF8https://github.com/hylander0/Iteedee.ApkReader/issues/20​​