internal Lease(BinaryReader bR)
{
switch (bR.ReadByte())
{
case 1:
_type = (LeaseType)bR.ReadByte();
_clientIdentifier = DhcpOption.Parse(bR.BaseStream) as ClientIdentifierOption;
_clientIdentifier.ParseOptionValue();
_hostName = bR.ReadShortString();
if (_hostName == "")
{
_hostName = null;
}
_hardwareAddress = bR.ReadBuffer();
_address = IPAddressExtension.Parse(bR);
_leaseObtained = bR.ReadDate();
_leaseExpires = bR.ReadDate();
break;
default:
throw new InvalidDataException("Lease data format version not supported.");
}
}
public StatCounter(BinaryReader bR)
{
if (Encoding.ASCII.GetString(bR.ReadBytes(2)) != "SC") //format
{
throw new InvalidDataException("StatCounter format is invalid.");
}
byte version = bR.ReadByte();
switch (version)
{
case 1:
_totalQueries = bR.ReadInt32();
_totalNoError = bR.ReadInt32();
_totalServerFailure = bR.ReadInt32();
_totalNameError = bR.ReadInt32();
_totalRefused = bR.ReadInt32();
_totalBlocked = bR.ReadInt32();
{
int count = bR.ReadInt32();
for (int i = 0; i < count; i++)
{
_queryDomains.TryAdd(bR.ReadShortString(), new Counter(bR.ReadInt32()));
}
}
{
int count = bR.ReadInt32();
for (int i = 0; i < count; i++)
{
_queryBlockedDomains.TryAdd(bR.ReadShortString(), new Counter(bR.ReadInt32()));
}
}
{
int count = bR.ReadInt32();
for (int i = 0; i < count; i++)
{
_queryTypes.TryAdd((DnsResourceRecordType)bR.ReadUInt16(), new Counter(bR.ReadInt32()));
}
}
{
int count = bR.ReadInt32();
for (int i = 0; i < count; i++)
{
_clientIpAddresses.TryAdd(IPAddressExtension.Parse(bR), new Counter(bR.ReadInt32()));
}
}
break;
default:
throw new InvalidDataException("StatCounter version not supported.");
}
_locked = true;
}
/// <summary>
/// Creates a new account data container class instance
/// </summary>
public Account(BinaryReader binaryReader)
{
ID = binaryReader.ReadInt64();
IsBlocked = binaryReader.ReadBoolean();
Level = binaryReader.ReadByte();
Name = new Username(binaryReader);
Passhash = new Passhash(binaryReader);
EmailAddress = new EmailAddress(binaryReader);
AccessToken = new Token(binaryReader);
LastUseIpAddress = IPAddressExtension.FromBytes(binaryReader);
}
public void ChangeNetwork(IPAddress startingAddress, IPAddress endingAddress, IPAddress subnetMask)
{
if (startingAddress.AddressFamily != AddressFamily.InterNetwork)
{
throw new ArgumentException("Address family not supported.", nameof(startingAddress));
}
if (endingAddress.AddressFamily != AddressFamily.InterNetwork)
{
throw new ArgumentException("Address family not supported.", nameof(endingAddress));
}
if (subnetMask.AddressFamily != AddressFamily.InterNetwork)
{
throw new ArgumentException("Address family not supported.", nameof(subnetMask));
}
uint startingAddressNumber = startingAddress.ConvertIpToNumber();
uint endingAddressNumber = endingAddress.ConvertIpToNumber();
if (startingAddressNumber >= endingAddressNumber)
{
throw new ArgumentException("Ending address must be greater than starting address.");
}
_startingAddress = startingAddress;
_endingAddress = endingAddress;
_subnetMask = subnetMask;
//compute other parameters
uint subnetMaskNumber = _subnetMask.ConvertIpToNumber();
uint networkAddressNumber = startingAddressNumber & subnetMaskNumber;
uint broadcastAddressNumber = networkAddressNumber | ~subnetMaskNumber;
if (networkAddressNumber == startingAddressNumber)
{
throw new ArgumentException("Starting address cannot be same as the network address.");
}
if (broadcastAddressNumber == endingAddressNumber)
{
throw new ArgumentException("Ending address cannot be same as the broadcast address.");
}
_networkAddress = IPAddressExtension.ConvertNumberToIp(networkAddressNumber);
_broadcastAddress = IPAddressExtension.ConvertNumberToIp(broadcastAddressNumber);
_reverseZone = Zone.GetReverseZone(_networkAddress, _subnetMask);
lock (_lastAddressOfferedLock)
{
_lastAddressOffered = IPAddressExtension.ConvertNumberToIp(startingAddressNumber - 1u);
}
}
public DnsProvider(BinaryReader bR)
{
this.Name = bR.ReadShortString();
this.Addresses = new List <IPAddress>();
int count = bR.ReadInt32();
for (int i = 0; i < count; i++)
{
this.Addresses.Add(IPAddressExtension.Parse(bR));
}
}
public Route(Stream s)
{
int subnetMaskWidth = s.ReadByte();
if (subnetMaskWidth < 0)
{
throw new EndOfStreamException();
}
byte[] destinationBuffer = new byte[4];
s.ReadBytes(destinationBuffer, 0, Convert.ToInt32(Math.Ceiling(Convert.ToDecimal(subnetMaskWidth) / 8)));
_destination = new IPAddress(destinationBuffer);
_subnetMask = IPAddressExtension.GetSubnetMask(subnetMaskWidth);
_router = new IPAddress(s.ReadBytes(4));
}
internal Lease(BinaryReader bR)
{
byte version = bR.ReadByte();
switch (version)
{
case 1:
case 2:
_type = (LeaseType)bR.ReadByte();
_clientIdentifier = DhcpOption.Parse(bR.BaseStream) as ClientIdentifierOption;
_clientIdentifier.ParseOptionValue();
_hostName = bR.ReadShortString();
if (string.IsNullOrWhiteSpace(_hostName))
{
_hostName = null;
}
_hardwareAddress = bR.ReadBuffer();
_address = IPAddressExtension.Parse(bR);
if (version >= 2)
{
_comments = bR.ReadShortString();
if (string.IsNullOrWhiteSpace(_comments))
{
_comments = null;
}
}
_leaseObtained = bR.ReadDateTime();
_leaseExpires = bR.ReadDateTime();
break;
default:
throw new InvalidDataException("Lease data format version not supported.");
}
}
public void ByteConsversion(IPAddress value)
{
var bytes = new byte[IPAddressExtension.ByteSize];
var newValue = value;
using (var memoryStream = new MemoryStream(bytes))
{
using (var binaryWriter = new BinaryWriter(memoryStream))
{
value.ToBytes(binaryWriter);
Assert.AreEqual(IPAddressExtension.ByteSize, memoryStream.Position);
binaryWriter.Seek(0, SeekOrigin.Begin);
using (var binaryReader = new BinaryReader(memoryStream))
{
newValue = IPAddressExtension.FromBytes(binaryReader);
Assert.AreEqual(IPAddressExtension.ByteSize, memoryStream.Position);
}
}
}
Assert.AreEqual(value, newValue);
}
public Scope(BinaryReader bR)
{
if (Encoding.ASCII.GetString(bR.ReadBytes(2)) != "SC")
{
throw new InvalidDataException("DhcpServer scope file format is invalid.");
}
switch (bR.ReadByte())
{
case 1:
_name = bR.ReadShortString();
_enabled = bR.ReadBoolean();
ChangeNetwork(IPAddressExtension.Parse(bR), IPAddressExtension.Parse(bR), IPAddressExtension.Parse(bR));
_leaseTimeDays = bR.ReadUInt16();
_leaseTimeHours = bR.ReadByte();
_leaseTimeMinutes = bR.ReadByte();
_offerDelayTime = bR.ReadUInt16();
_domainName = bR.ReadShortString();
if (string.IsNullOrWhiteSpace(_domainName))
{
_domainName = null;
}
_dnsTtl = bR.ReadUInt32();
_routerAddress = IPAddressExtension.Parse(bR);
if (_routerAddress.Equals(IPAddress.Any))
{
_routerAddress = null;
}
{
int count = bR.ReadByte();
if (count > 0)
{
if (count == 255)
{
_useThisDnsServer = true;
FindThisDnsServerAddress();
}
else
{
_dnsServers = new IPAddress[count];
for (int i = 0; i < count; i++)
{
_dnsServers[i] = IPAddressExtension.Parse(bR);
}
}
}
}
{
int count = bR.ReadByte();
if (count > 0)
{
_winsServers = new IPAddress[count];
for (int i = 0; i < count; i++)
{
_winsServers[i] = IPAddressExtension.Parse(bR);
}
}
}
{
int count = bR.ReadByte();
if (count > 0)
{
_ntpServers = new IPAddress[count];
for (int i = 0; i < count; i++)
{
_ntpServers[i] = IPAddressExtension.Parse(bR);
}
}
}
{
int count = bR.ReadByte();
if (count > 0)
{
_staticRoutes = new ClasslessStaticRouteOption.Route[count];
for (int i = 0; i < count; i++)
{
_staticRoutes[i] = new ClasslessStaticRouteOption.Route(bR.BaseStream);
}
}
}
{
int count = bR.ReadByte();
if (count > 0)
{
_exclusions = new Exclusion[count];
for (int i = 0; i < count; i++)
{
_exclusions[i] = new Exclusion(IPAddressExtension.Parse(bR), IPAddressExtension.Parse(bR));
}
}
}
{
int count = bR.ReadInt32();
if (count > 0)
{
_reservedLeases = new Lease[count];
for (int i = 0; i < count; i++)
{
_reservedLeases[i] = new Lease(bR);
}
}
_allowOnlyReservedLeases = bR.ReadBoolean();
}
{
int count = bR.ReadInt32();
if (count > 0)
{
for (int i = 0; i < count; i++)
{
Lease lease = new Lease(bR);
_leases.TryAdd(lease.ClientIdentifier, lease);
}
}
}
break;
default:
throw new InvalidDataException("Scope data format version not supported.");
}
}
internal Lease GetOffer(DhcpMessage request)
{
if (_leases.TryGetValue(request.ClientIdentifier, out Lease existingLease))
{
//lease already exists
return(existingLease);
}
if (_reservedLeases != null)
{
ClientIdentifierOption clientIdentifierKey = new ClientIdentifierOption(1, request.ClientHardwareAddress);
foreach (Lease reservedLease in _reservedLeases)
{
if (reservedLease.ClientIdentifier.Equals(clientIdentifierKey))
{
//reserved address exists
IPAddress reservedLeaseAddress = reservedLease.Address;
if (!IsAddressAvailable(ref reservedLeaseAddress))
{
break; //reserved lease address is already allocated so ignore reserved lease
}
Lease reservedOffer = new Lease(LeaseType.Reserved, request.ClientIdentifier, request.HostName?.HostName, request.ClientHardwareAddress, reservedLease.Address, null, GetLeaseTime());
return(_offers.AddOrUpdate(request.ClientIdentifier, reservedOffer, delegate(ClientIdentifierOption key, Lease existingValue)
{
return reservedOffer;
}));
}
}
}
if (_allowOnlyReservedLeases)
{
throw new DhcpServerException("DHCP Server failed to offer IP address to " + request.GetClientFullIdentifier() + ": scope allows only reserved lease allocations.");
}
Lease dummyOffer = new Lease(LeaseType.None, null, null, null, null, null, 0);
Lease existingOffer = _offers.GetOrAdd(request.ClientIdentifier, dummyOffer);
if (dummyOffer != existingOffer)
{
if (existingOffer.Type == LeaseType.None)
{
return(null); //dummy offer so another thread is handling offer; do nothing
}
//offer already exists
existingOffer.ExtendLease(GetLeaseTime());
return(existingOffer);
}
//find offer ip address
IPAddress offerAddress = null;
if (request.RequestedIpAddress != null)
{
//client wish to get this address
IPAddress requestedAddress = request.RequestedIpAddress.Address;
if (IsAddressInRange(requestedAddress) && IsAddressAvailable(ref requestedAddress))
{
offerAddress = requestedAddress;
}
}
if (offerAddress == null)
{
lock (_lastAddressOfferedLock)
{
//find free address from scope
offerAddress = _lastAddressOffered;
uint endingAddressNumber = _endingAddress.ConvertIpToNumber();
bool offerAddressWasResetFromEnd = false;
while (true)
{
uint nextOfferAddressNumber = offerAddress.ConvertIpToNumber() + 1u;
if (nextOfferAddressNumber > endingAddressNumber)
{
if (offerAddressWasResetFromEnd)
{
throw new DhcpServerException("DHCP Server failed to offer IP address to " + request.GetClientFullIdentifier() + ": address unavailable due to address pool exhaustion.");
}
offerAddress = IPAddressExtension.ConvertNumberToIp(_startingAddress.ConvertIpToNumber() - 1u);
offerAddressWasResetFromEnd = true;
continue;
}
offerAddress = IPAddressExtension.ConvertNumberToIp(nextOfferAddressNumber);
if (IsAddressAvailable(ref offerAddress))
{
break;
}
}
_lastAddressOffered = offerAddress;
}
}
Lease offerLease = new Lease(LeaseType.Dynamic, request.ClientIdentifier, request.HostName?.HostName, request.ClientHardwareAddress, offerAddress, null, GetLeaseTime());
return(_offers.AddOrUpdate(request.ClientIdentifier, offerLease, delegate(ClientIdentifierOption key, Lease existingValue)
{
return offerLease;
}));
}
public AuthZoneInfo(BinaryReader bR)
{
byte version = bR.ReadByte();
switch (version)
{
case 1:
case 2:
_name = bR.ReadShortString();
_type = (AuthZoneType)bR.ReadByte();
_disabled = bR.ReadBoolean();
if (version >= 2)
{
{
_zoneTransfer = (AuthZoneTransfer)bR.ReadByte();
int count = bR.ReadByte();
if (count > 0)
{
IPAddress[] nameServers = new IPAddress[count];
for (int i = 0; i < count; i++)
{
nameServers[i] = IPAddressExtension.Parse(bR);
}
_zoneTransferNameServers = nameServers;
}
}
{
_notify = (AuthZoneNotify)bR.ReadByte();
int count = bR.ReadByte();
if (count > 0)
{
IPAddress[] nameServers = new IPAddress[count];
for (int i = 0; i < count; i++)
{
nameServers[i] = IPAddressExtension.Parse(bR);
}
_notifyNameServers = nameServers;
}
}
}
else
{
switch (_type)
{
case AuthZoneType.Primary:
_zoneTransfer = AuthZoneTransfer.AllowOnlyZoneNameServers;
_notify = AuthZoneNotify.ZoneNameServers;
break;
default:
_zoneTransfer = AuthZoneTransfer.Deny;
_notify = AuthZoneNotify.None;
break;
}
}
switch (_type)
{
case AuthZoneType.Secondary:
_expiry = bR.ReadDate();
break;
case AuthZoneType.Stub:
_expiry = bR.ReadDate();
break;
}
break;
default:
throw new InvalidDataException("AuthZoneInfo format version not supported.");
}
}
public AuthZoneInfo(BinaryReader bR)
{
byte version = bR.ReadByte();
switch (version)
{
case 1:
case 2:
case 3:
case 4:
_name = bR.ReadShortString();
_type = (AuthZoneType)bR.ReadByte();
_disabled = bR.ReadBoolean();
if (version >= 2)
{
{
_zoneTransfer = (AuthZoneTransfer)bR.ReadByte();
int count = bR.ReadByte();
if (count > 0)
{
IPAddress[] nameServers = new IPAddress[count];
for (int i = 0; i < count; i++)
{
nameServers[i] = IPAddressExtension.Parse(bR);
}
_zoneTransferNameServers = nameServers;
}
}
{
_notify = (AuthZoneNotify)bR.ReadByte();
int count = bR.ReadByte();
if (count > 0)
{
IPAddress[] nameServers = new IPAddress[count];
for (int i = 0; i < count; i++)
{
nameServers[i] = IPAddressExtension.Parse(bR);
}
_notifyNameServers = nameServers;
}
}
}
else
{
switch (_type)
{
case AuthZoneType.Primary:
_zoneTransfer = AuthZoneTransfer.AllowOnlyZoneNameServers;
_notify = AuthZoneNotify.ZoneNameServers;
break;
default:
_zoneTransfer = AuthZoneTransfer.Deny;
_notify = AuthZoneNotify.None;
break;
}
}
switch (_type)
{
case AuthZoneType.Primary:
if (version >= 3)
{
int count = bR.ReadInt32();
DnsResourceRecord[] zoneHistory = new DnsResourceRecord[count];
for (int i = 0; i < count; i++)
{
zoneHistory[i] = new DnsResourceRecord(bR.BaseStream);
zoneHistory[i].Tag = new DnsResourceRecordInfo(bR, zoneHistory[i].Type == DnsResourceRecordType.SOA);
}
_zoneHistory = zoneHistory;
}
if (version >= 4)
{
int count = bR.ReadByte();
Dictionary <string, object> tsigKeyNames = new Dictionary <string, object>(count);
for (int i = 0; i < count; i++)
{
tsigKeyNames.Add(bR.ReadShortString(), null);
}
_tsigKeyNames = tsigKeyNames;
}
break;
case AuthZoneType.Secondary:
_expiry = bR.ReadDateTime();
if (version >= 4)
{
int count = bR.ReadInt32();
DnsResourceRecord[] zoneHistory = new DnsResourceRecord[count];
for (int i = 0; i < count; i++)
{
zoneHistory[i] = new DnsResourceRecord(bR.BaseStream);
zoneHistory[i].Tag = new DnsResourceRecordInfo(bR, zoneHistory[i].Type == DnsResourceRecordType.SOA);
}
_zoneHistory = zoneHistory;
}
if (version >= 4)
{
int count = bR.ReadByte();
Dictionary <string, object> tsigKeyNames = new Dictionary <string, object>(count);
for (int i = 0; i < count; i++)
{
tsigKeyNames.Add(bR.ReadShortString(), null);
}
_tsigKeyNames = tsigKeyNames;
}
break;
case AuthZoneType.Stub:
_expiry = bR.ReadDateTime();
break;
}
break;
default:
throw new InvalidDataException("AuthZoneInfo format version not supported.");
}
}
