private void OutputFile(HttpListenerContext ctx, string filename)
{
ThreadPool.QueueUserWorkItem((obj) =>
{
ctx.Response.StatusCode = 200;
ctx.Response.KeepAlive = true;
ctx.Response.AddHeader("Content-Type", GetContentType(filename));
ctx.Response.AddHeader("content-disposition", "attachment;filename=" +
HttpUtility.UrlEncode(Path.GetFileName(filename)));
Stream writer = ctx.Response.OutputStream;
FileStream fsr = new FileStream(filename, FileMode.Open, FileAccess.Read);
byte[] readBytes = new byte[BufferSize + 16];
int len = 0;
while ((len = fsr.Read(readBytes, 0, readBytes.Length)) != 0)
{
if (IsStopped)
{
break;
}
try
{
if (len < (BufferSize + 16))
{
byte[] rest = new byte[len];
Array.Copy(readBytes, rest, len);
byte[] en = SecurityUtils.AesDecrypt(Key, rest);
writer.Write(en, 0, en.Length);
}
else
{
byte[] en = SecurityUtils.AesDecrypt(Key, readBytes);
writer.Write(en, 0, en.Length);
}
writer.Flush();
}
catch (Exception ex)
{
Console.WriteLine("OutputFile error={0}", ex.Message);
break;
}
}
fsr.Close();
writer.Close();
ctx.Response.Close();
});
}
internal bool IsPasswordValid(string FileName)
{
try
{
FileStream fsr = new FileStream(FileName, FileMode.Open, FileAccess.Read);
byte[] readBytes = new byte[HttpServer.BufferSize + 16];
int len = fsr.Read(readBytes, 0, readBytes.Length);
byte[] en = SecurityUtils.AesDecrypt(Password, readBytes);
fsr.Close();
return(en == null ? false : true);
}
catch { }
return(false);
}
/*
* 以上的2个配置 CookieName, AesKey 可以自己从别的地方读取配置.
*/
/// <summary>
/// 获取票据
/// </summary>
/// <typeparam name="T">用户附加数据类型</typeparam>
/// <param name="getHeader">获取头里面的值</param>
/// <returns>登陆时设置的票据</returns>
public AuthTicket <T> GetTicket <T>(Func <string, string> getHeader)
{
var cipherText = getHeader(this.CookieName);
if (String.IsNullOrEmpty(cipherText))
{
return(null);
}
var cipherBytes = Convert.FromBase64String(cipherText);
string plainText;
try
{
plainText = SecurityUtils.AesDecrypt(cipherBytes, this.AesKey);
}
catch { return(null); }
if (String.IsNullOrWhiteSpace(plainText))
{
return(null);
}
return(plainText.ParseJson <AuthTicket <T> >());
}