public bool Decode(byte[] data, int len, string key)
{
blf_ctx c;
uint xl, xr;
int i;
if (len % 8 != 0)
{
return(false);
}
c = new blf_ctx();
c.S = new uint[4, 256];
c.P = new uint[18];
InitBlowfish(c, key, key.Length);
for (i = 0; i < len; i += 8)
{
// memcpy(&xl, data + i, sizeof(UINT32));
// memcpy(&xr, data + i + 4, sizeof(UINT32));
xl = (uint)ConvertHelper.BytesToInt32(data, i, true);
xr = (uint)ConvertHelper.BytesToInt32(data, i + 4, true);
Blowfish_decipher(c, ref xl, ref xr);
//memcpy(data + i, &xl, sizeof(UINT32));
//memcpy(data + i + 4, &xr, sizeof(UINT32));
byte[] byteXl = ConvertHelper.Int32ToBytes((int)xl, true);
byte[] byteXr = ConvertHelper.Int32ToBytes((int)xr, true);
Array.Copy(byteXl, 0, data, i, 4);
Array.Copy(byteXr, 0, data, i + 4, 4);
}
return(true);
}
public static VideoData DecodeVideo(int len, byte[] data, byte[] before)
{
VideoData video = new VideoData();
int tmpMagic = ConvertHelper.BytesToInt32(data, 0, true);
video.NewFlag = (tmpMagic == MAGIC_NORMAL);
int locIdx = 12;
if (video.NewFlag)
{
video.Type = (enumVideoZipType)data[locIdx++];
video.Resolution = (enumVideoResolution)data[locIdx++];
video.Video = data[locIdx++];
video.NeedPhoto = data[locIdx++];
video.IsKeyImg = data[locIdx++];
video.Time = ConvertHelper.BytesToInt32(data, locIdx, true);
locIdx += 4;
video.TakeTime = ConvertHelper.BytesToInt32(data, locIdx, true);
locIdx += 4;
video.Length = ConvertHelper.BytesToInt32(data, locIdx, true);
locIdx += 4;
if (len >= locIdx)
{
video.Data = new byte[len - locIdx];
Array.Copy(data, locIdx, video.Data, 0, len - locIdx);
}
}
else
{
locIdx = 0;
video.Data = new byte[len - locIdx + before.Length];
Array.Copy(before, video.Data, before.Length);
Array.Copy(data, locIdx, video.Data, before.Length, len - locIdx);
}
//Console.WriteLine("{0}={1}", len, video.NewFlag);
//try
//{
// System.IO.MemoryStream ms2 = new System.IO.MemoryStream(video.Data);
// System.Drawing.Image img2 = System.Drawing.Image.FromStream(ms2);
// img2.Save("bbb.jpg");
//}
//catch (Exception e)
//{
// Console.WriteLine(e.Message);
//}
return(video);
}
public static NormalDataStruct DecodeData(byte[] buff)
{
NormalDataStruct data = new NormalDataStruct();
int locIdx = 4;
data.MagicNumber = ConvertHelper.BytesToInt32(buff, 0, true);
data.Code = (enumCommandType)ConvertHelper.BytesToInt16(buff, locIdx, true);
locIdx += 2;
data.contentLen = ConvertHelper.BytesToInt32(buff, locIdx, true);
locIdx += 4;
data.FillField = ConvertHelper.BytesToInt16(buff, locIdx, true);
locIdx += 2;
data.Content = new byte[data.contentLen];
Array.Copy(buff, locIdx, data.Content, 0, data.contentLen);
return(data);
}
public static WifiRespInfo DecodeWifiSearch(byte[] buff)
{
WifiRespInfo info = new WifiRespInfo();
int locIdx = 4;
info.Magic = ConvertHelper.BytesToInt32(buff, 0, true);
info.Code = (enumCommandType)buff[locIdx++];
int wifiIDLen = buff[locIdx++];
byte[] wifiIDByte = new byte[wifiIDLen];
Array.Copy(buff, locIdx, wifiIDByte, 0, wifiIDLen);
locIdx += wifiIDLen;
info.ID = ConvertHelper.BytesToString(wifiIDByte, Encoding.ASCII);
int wifiVersionLen = buff[locIdx++];
byte[] wifiVersionByte = new byte[wifiVersionLen];
Array.Copy(buff, locIdx, wifiVersionByte, 0, wifiVersionLen);
locIdx += wifiVersionLen;
info.Version = ConvertHelper.BytesToString(wifiVersionByte, Encoding.ASCII);
int wifiWebLen = buff[locIdx++];
byte[] wifiWebByte = new byte[wifiWebLen];
Array.Copy(buff, locIdx, wifiWebByte, 0, wifiWebLen);
locIdx += wifiWebLen;
info.Web = ConvertHelper.BytesToString(wifiWebByte, Encoding.ASCII);
int wifiNameLen = buff[locIdx++];
byte[] wifiNameByte = new byte[wifiNameLen];
Array.Copy(buff, locIdx, wifiNameByte, 0, wifiNameLen);
locIdx += wifiNameLen;
info.Name = ConvertHelper.BytesToString(wifiNameByte, Encoding.ASCII);
info.IP = string.Format("{0}.{1}.{2}.{3}", buff[locIdx++], buff[locIdx++], buff[locIdx++], buff[locIdx++]);
info.NetMask = string.Format("{0}.{1}.{2}.{3}", buff[locIdx++], buff[locIdx++], buff[locIdx++], buff[locIdx++]);
info.IsDhcp = buff[locIdx++] == 1;
info.IPStatic = string.Format("{0}.{1}.{2}.{3}", buff[locIdx++], buff[locIdx++], buff[locIdx++], buff[locIdx++]);
info.NetMaskStatic = string.Format("{0}.{1}.{2}.{3}", buff[locIdx++], buff[locIdx++], buff[locIdx++], buff[locIdx++]);
info.NetGateStatic = string.Format("{0}.{1}.{2}.{3}", buff[locIdx++], buff[locIdx++], buff[locIdx++], buff[locIdx++]);
info.DNS1 = string.Format("{0}.{1}.{2}.{3}", buff[locIdx++], buff[locIdx++], buff[locIdx++], buff[locIdx++]);
info.DNS2 = string.Format("{0}.{1}.{2}.{3}", buff[locIdx++], buff[locIdx++], buff[locIdx++], buff[locIdx++]);
byte[] wifiPort = new byte[2];
info.Port = ConvertHelper.BytesToInt16(buff, locIdx, true);
locIdx += 2;
info.IsHttps = buff[locIdx++] == 1;
int wifiNOLen = buff[locIdx++];
byte[] wifiNOByte = new byte[wifiNameLen];
Array.Copy(buff, locIdx, wifiNOByte, 0, wifiNOLen);
Array.Reverse(wifiNOByte);
locIdx += wifiNOLen;
info.Number = ConvertHelper.BytesToString(wifiNOByte, Encoding.ASCII);
info.Type = buff[locIdx++];
return(info);
}