/// <summary>
/// Constructs a NS record by reading bytes from a return message
/// </summary>
/// <param name="pointer">A logical pointer to the bytes holding the record</param>
public SshFP(Pointer pointer)
{
//detect algorithm
byte a = pointer.ReadByte();
switch(a)
{
case 0: this.algorithm = "Reserved"; break;
case 1: this.algorithm = "RSA"; break;
case 2: this.algorithm = "DSS"; break;
default: this.algorithm = "Unknown"; break;
}
//detect fingerprint type
byte fpt = pointer.ReadByte();
switch(fpt)
{
case 0: this.fingerPrintType = "Reserved"; break;
case 1: this.fingerPrintType = "RSA-1"; break;
default: this.fingerPrintType = "Unknown"; break;
}
this.fingerPrint = pointer.ReadString(); //read the fingerprint (hex format)
}
/// <summary>
/// Constructs an LOC record by reading bytes from a return message
/// </summary>
/// <param name="pointer">A logical pointer to the bytes holding the record</param>
public Loc(Pointer pointer)
{
int referenceAlt = 100000 * 100;
int latval, longval, altval;
version = pointer.ReadByte();
size = pointer.ReadByte();
hPrecision = pointer.ReadByte();
vPrecision = pointer.ReadByte();
latitude = pointer.ReadInt();
longitude = pointer.ReadInt();
altitude = pointer.ReadInt();
latval = latitude - (1 << 31);
longval = longitude - (1 << 31);
if (altitude < referenceAlt)
{
//below WGS 84 spheroid
altval = referenceAlt - altitude;
altsign = -1;
}
else
{
altval = altitude - referenceAlt;
altsign = 1;
}
if (latval < 0)
{
northsouth = 'S';
latval = -latval;
}
else
northsouth = 'N';
//latitude calculation
latsecfrag = latval % 1000;
latval /= 1000;
latsec = latval % 60;
latval /= 60;
latmin = latval % 60;
latval /= 60;
latdeg = latval;
if (longval < 0)
{
eastwest = 'W';
longval = -longval;
}
else
eastwest = 'E';
//longitude calculation
longsecfrag = longval % 1000;
longval /= 1000;
longsec = longval % 60;
longval /= 60;
longmin = longval % 60;
longval /= 60;
longdeg = longval;
//altitude
altfrag = altval % 100;
altmeters = (altval / 100) * altsign;
}
/// <summary>
/// Constructs a NS record by reading bytes from a return message
/// </summary>
/// <param name="pointer">A logical pointer to the bytes holding the record</param>
public Txt(Pointer pointer, int length)
{
pointer.ReadByte(); //ignore first (NULL) byte
text = pointer.ReadString(length - 1);
}