public static string SignCookie(string input, long timestamp = long.MinValue, IPAddress remoteIp = null, uint validTime = uint.MaxValue)
{
if (input == null)
{
throw new ArgumentNullException();
}
if (hmacKey == null)
{
throw new InvalidOperationException();
}
var dataLen = cookieEncoding.GetByteCount(input) + DataOffset;
var data = new byte[dataLen];
var encodedLength = cookieEncoding.GetBytes(input, 0, input.Length, data, DataOffset);
System.Diagnostics.Debug.Assert(encodedLength == (dataLen - DataOffset));
data.PutInt64(TsOffset, timestamp == long.MinValue ? UnixTimestamp.CurrentMillisecondTimestamp : timestamp);
data.PutUInt32(ValidityOffset, validTime);
if (remoteIp == null) //which means don't care
{
remoteIp = IPAddress.IPv6Any; //all zeroes
}
else if (remoteIp.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
remoteIp = remoteIp.MapToIPv6();
}
Array.Copy(remoteIp.GetAddressBytes(), 0, data, IpAddrOffset, IpAddrLength);
Array.Copy(hmac.Value.ComputeHash(data, SigLength, data.Length - SigLength), data, SigLength);
return(Convert.ToBase64String(data).Replace('+', '.').Replace('/', '_').Replace('=', '-'));
}
private void WriteToStream(Stream stream, string msg)
{
if (stream != null)
{
stream.Write(uniEncoding.GetBytes(msg),
0, uniEncoding.GetByteCount(msg));
}
}
/// <summary>
/// This will look at the start of the file for the BOM and process it
/// if it's found.
/// </summary>
private void CheckforAndHandleBOM()
{
byte[] utf32be = new byte[] { 0x00, 0x00, 0xfe, 0xff };
byte[] utf32le = new byte[] { 0xff, 0xfe, 0x00, 0x00 };
byte[] utf16be = new byte[] { 0xfe, 0xff };
byte[] utf16le = new byte[] { 0xff, 0xfe };
byte[] utf8 = new byte[] { 0xef, 0xbb, 0xbf };
if (IsCurrentData(utf32le) || IsCurrentData(utf32be))
{
m_foundBOM = true;
m_BOMLength = utf32be.Length;
//m_BOMEncoding = System.Text.Encoding.???; // not currently defined for 32
m_position = m_BOMLength;
}
else if (IsCurrentData(utf8))
{
m_foundBOM = true;
m_BOMLength = utf8.Length;
m_BOMEncoding = System.Text.Encoding.UTF8;
m_position = m_BOMLength;
}
else if (IsCurrentData(utf16le))
{
m_foundBOM = true;
m_BOMLength = utf16le.Length;
m_BOMEncoding = System.Text.Encoding.Unicode;
m_position = m_BOMLength;
}
else if (IsCurrentData(utf16be))
{
m_foundBOM = true;
m_BOMLength = utf16be.Length;
m_BOMEncoding = System.Text.Encoding.BigEndianUnicode;
m_position = m_BOMLength;
}
if (m_foundBOM) // has one
{
if (m_BOMEncoding == System.Text.Encoding.UTF8)
{
// no extra processing needed for UTF8 - this is the default format
}
else if (m_BOMEncoding == System.Text.Encoding.Unicode ||
m_BOMEncoding == System.Text.Encoding.BigEndianUnicode)
{
System.Text.UTF8Encoding utf8Encoder = new System.Text.UTF8Encoding(false, true);
try
{
// decode the wide Unicode byte data to wide chars
System.Text.Decoder uniDecoder = m_BOMEncoding.GetDecoder();
int charCount = uniDecoder.GetCharCount(m_FileData, 2, m_FileData.Length-2);
char[] chars = new Char[charCount];
int charsDecodedCount = uniDecoder.GetChars(m_FileData, 2, m_FileData.Length-2, chars, 0);
// decode the wide chars to utf8 bytes
int newLength = utf8Encoder.GetByteCount(chars);
m_FileData = new byte[newLength];
utf8Encoder.GetBytes(chars, 0, chars.Length, m_FileData, 0);
// log msg for user to see
if (m_Log != null)
m_Log.AddWarning(String.Format(Sfm2XmlStrings.FileConvertedFrom0To1,
m_BOMEncoding.WebName, utf8Encoder.WebName));
}
catch (System.Exception e)
{
if (m_Log != null)
{
m_Log.AddFatalError(String.Format(Sfm2XmlStrings.CannotConvertFileFrom0To1,
m_BOMEncoding.WebName, utf8Encoder.WebName));
m_Log.AddFatalError(String.Format(Sfm2XmlStrings.Exception0, e.Message));
}
m_position = 0;
m_FileData = new byte[0]; // don't process anything
}
}
else
{
m_position = 0;
m_FileData = new byte[0]; // don't process anything
if (m_Log != null)
m_Log.AddFatalError(Sfm2XmlStrings.CannotProcessUtf32Files);
}
}
}
/// <summary>
/// This will look at the start of the file for the BOM and process it
/// if it's found.
/// </summary>
private void CheckforAndHandleBOM()
{
byte[] utf32be = new byte[] { 0x00, 0x00, 0xfe, 0xff };
byte[] utf32le = new byte[] { 0xff, 0xfe, 0x00, 0x00 };
byte[] utf16be = new byte[] { 0xfe, 0xff };
byte[] utf16le = new byte[] { 0xff, 0xfe };
byte[] utf8 = new byte[] { 0xef, 0xbb, 0xbf };
if (IsCurrentData(utf32le) || IsCurrentData(utf32be))
{
m_foundBOM = true;
m_BOMLength = utf32be.Length;
//m_BOMEncoding = System.Text.Encoding.???; // not currently defined for 32
m_position = m_BOMLength;
}
else if (IsCurrentData(utf8))
{
m_foundBOM = true;
m_BOMLength = utf8.Length;
m_BOMEncoding = System.Text.Encoding.UTF8;
m_position = m_BOMLength;
}
else if (IsCurrentData(utf16le))
{
m_foundBOM = true;
m_BOMLength = utf16le.Length;
m_BOMEncoding = System.Text.Encoding.Unicode;
m_position = m_BOMLength;
}
else if (IsCurrentData(utf16be))
{
m_foundBOM = true;
m_BOMLength = utf16be.Length;
m_BOMEncoding = System.Text.Encoding.BigEndianUnicode;
m_position = m_BOMLength;
}
if (m_foundBOM) // has one
{
if (m_BOMEncoding == System.Text.Encoding.UTF8)
{
// no extra processing needed for UTF8 - this is the default format
}
else if (m_BOMEncoding == System.Text.Encoding.Unicode ||
m_BOMEncoding == System.Text.Encoding.BigEndianUnicode)
{
System.Text.UTF8Encoding utf8Encoder = new System.Text.UTF8Encoding(false, true);
try
{
// decode the wide Unicode byte data to wide chars
System.Text.Decoder uniDecoder = m_BOMEncoding.GetDecoder();
int charCount = uniDecoder.GetCharCount(m_FileData, 2, m_FileData.Length - 2);
char[] chars = new Char[charCount];
uniDecoder.GetChars(m_FileData, 2, m_FileData.Length - 2, chars, 0);
// decode the wide chars to utf8 bytes
int newLength = utf8Encoder.GetByteCount(chars);
m_FileData = new byte[newLength];
utf8Encoder.GetBytes(chars, 0, chars.Length, m_FileData, 0);
// log msg for user to see
if (m_Log != null)
{
m_Log.AddWarning(String.Format(Sfm2XmlStrings.FileConvertedFrom0To1,
m_BOMEncoding.WebName, utf8Encoder.WebName));
}
}
catch (System.Exception e)
{
if (m_Log != null)
{
m_Log.AddFatalError(String.Format(Sfm2XmlStrings.CannotConvertFileFrom0To1,
m_BOMEncoding.WebName, utf8Encoder.WebName));
m_Log.AddFatalError(String.Format(Sfm2XmlStrings.Exception0, e.Message));
}
m_position = 0;
m_FileData = new byte[0]; // don't process anything
}
}
else
{
m_position = 0;
m_FileData = new byte[0]; // don't process anything
if (m_Log != null)
{
m_Log.AddFatalError(Sfm2XmlStrings.CannotProcessUtf32Files);
}
}
}
}
