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