/// <summary>
/// Creates a new instance of this class
/// </summary>
public LSAHeader()
{
iLSAge = 0;
ospfOptions = new OSPFOptionsField();
lsType = LSType.Unknown;
iLinkStateID = 0;
iAdvertisingRouter = 0;
iLSSequenceNumber = 0;
iOrigalLength = -1;
bOriginalChecksum = new byte[0];
}
public OSPFAreaVertex(uint iID, int iDistanceFromRoot, LSAHeader lAssociatedLSA, int iAge, LSType lType)
{
this.iID = iID;
this.iDistanceFromRoot = iDistanceFromRoot;
this.lsAssociatedLSA = lAssociatedLSA;
this.iAge = iAge;
lNextHops = new List <Link>();
lIPAddresses = new List <IPAddress>();
lAreas = new List <OSPFArea>();
this.lsType = lType;
}
public static ILeastSquare Create(LSType type)
{
switch (type)
{
case LSType.GeneralReal:
return(new GeneralReal());
case LSType.GeneralComplex:
return(new GeneralComplex());
case LSType.FirComplex:
return(new FirComplex());
case LSType.FirPowerApprox:
return(new FirPowerApprox());
case LSType.IirComplexApprox:
return(new IirComplexApprox());
case LSType.IirPowerApprox:
return(new IirPowerApprox());
}
return(null);
}
/// <summary>
/// Creates a new instance of this class by parsing the given data.
/// </summary>
/// <param name="bData">The data to parse</param>
/// <param name="bCreateBody">A bool indicating whether a LSA body should be created. Set this property to false for database descriptions and LS acknowledgements messages</param>
public LSAHeader(byte[] bData, bool bCreateBody)
{
iLSAge = (short)((bData[0] << 8) + bData[1]);
ospfOptions = new OSPFOptionsField(bData[2]);
lsType = (LSType)bData[3];
iLinkStateID = ((uint)bData[4] << 24) + ((uint)bData[5] << 16) + ((uint)bData[6] << 8) + bData[7];
iAdvertisingRouter = ((uint)bData[8] << 24) + ((uint)bData[9] << 16) + ((uint)bData[10] << 8) + bData[11];
iLSSequenceNumber = ((uint)bData[12] << 24) + ((uint)bData[13] << 16) + ((uint)bData[14] << 8) + bData[15];
// 2 byte checksum
int iLen = ((bData[18] << 8) + bData[19]) - 20;
if (bCreateBody)
{
iOrigalLength = -1;
bOriginalChecksum = new byte[0];
byte[] bBodyBytes = new byte[iLen];
for (int iC1 = 0; iC1 < iLen; iC1++)
{
bBodyBytes[iC1] = bData[iC1 + 20];
}
if (bBodyBytes.Length > 0)
{
if (lsType == LSType.Router)
{
fEncapsulatedFrame = new RouterLSA(bBodyBytes);
}
else if (lsType == LSType.External)
{
fEncapsulatedFrame = new ASExternalLSA(bBodyBytes);
}
else if (lsType == LSType.Network)
{
fEncapsulatedFrame = new NetworkLSA(bBodyBytes);
}
else if (lsType == LSType.Summary_IP)
{
fEncapsulatedFrame = new SummaryLSA(bBodyBytes);
}
else if (lsType == LSType.Summary_ASBR)
{
fEncapsulatedFrame = new SummaryLSA(bBodyBytes);
}
else if (lsType == LSType.NSSA)
{
fEncapsulatedFrame = new ASExternalLSA(bBodyBytes);
}
else
{
fEncapsulatedFrame = new RawDataFrame(bBodyBytes);
}
}
}
else
{
iOrigalLength = iLen + 20;
bOriginalChecksum = new byte[2];
bOriginalChecksum[0] = bData[16];
bOriginalChecksum[1] = bData[17];
}
}
public LSObject(string Name, object Value, LSType Type) : this()
{
this.Name = Name;
this.Value = Value;
ValueType = Type;
}
/// <summary>
/// Creates a new instance of this class by parsing the given data starting at a given index
/// </summary>
/// <param name="bData">The data to parse</param>
/// <param name="iStartIndex">The index from which parsing starts</param>
public LSARequestItem(byte[] bData, int iStartIndex)
{
lsType = (LSType)((int)bData[iStartIndex + 0] << 24) + ((int)bData[iStartIndex + 1] << 16) + ((int)bData[iStartIndex + 2] << 8) + bData[iStartIndex + 3];
iLinkStateID = ((int)bData[iStartIndex + 4] << 24) + ((int)bData[iStartIndex + 5] << 16) + ((int)bData[iStartIndex + 6] << 8) + bData[iStartIndex + 7];
iAdvertisingRouterID = ((int)bData[iStartIndex + 8] << 24) + ((int)bData[iStartIndex + 9] << 16) + ((int)bData[iStartIndex + 10] << 8) + bData[iStartIndex + 11];
}
/// <summary>
/// Creates a new instance of this class
/// </summary>
public LSARequestItem()
{
lsType = LSType.Unknown;
iLinkStateID = 0;
iAdvertisingRouterID = 0;
}
