/// <summary>
/// Create an verification trailer with commands parameter passed in to the method.
/// </summary>
/// <param name="commands">
/// A list of commands to be contained in the verification trailer.<para/>
/// Flag SEC_VT_COMMAND_END is ignored by input, and will be added to
/// the last command automatically.
/// </param>
/// <returns>
/// Created verification trailer. Pad is not added until appending to stub.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Thrown when commands is null.
/// </exception>
/// <exception cref="InvalidOperationException">
/// Thrown when a SEC_VT_COMMAND is invalid, or NDR/NDR64 was not negotiated.
/// </exception>
public verification_trailer_t CreateVerificationTrailer(
params SEC_VT_COMMAND[] commands)
{
if (commands == null)
{
throw new ArgumentNullException("commands");
}
verification_trailer_t verificationTrailer = new verification_trailer_t();
verificationTrailer.header = new rpc_sec_verification_trailer();
verificationTrailer.header.signature = BitConverter.GetBytes(verification_trailer_t.SIGNATURE);
List <SEC_VT> secVtList = new List <SEC_VT>();
for (int i = 0; i < commands.Length; i++)
{
switch (commands[i]
& ~(SEC_VT_COMMAND.SEC_VT_COMMAND_END | SEC_VT_COMMAND.SEC_VT_MUST_PROCESS_COMMAND))
{
case SEC_VT_COMMAND.SEC_VT_COMMAND_BITMASK_1:
rpc_sec_vt_bitmask secVtBitmask = new rpc_sec_vt_bitmask();
secVtBitmask.command = commands[i];
//length: MUST be 0x0004.
secVtBitmask.length = verification_trailer_t.SEC_VT_BITMASK_LENGTH;
//bits: The bits field is a bitmask.
//A server MUST ignore bits it does not understand.
//Currently, there is only one bit defined: CLIENT_SUPPORT_HEADER_SIGNING
//(bitmask of 0x00000001). If this bit is set, the PFC_SUPPORT_HEADER_SIGN
//bit, as specified in section 2.2.2.3, MUST be present in the PDU header
//for the bind PDU on this connection.
secVtBitmask.bits = context.SupportsHeaderSign ? (uint)0x00000001 : 0;
secVtList.Add(secVtBitmask);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_HEADER2:
rpc_sec_vt_header2 secVtHeader2 = new rpc_sec_vt_header2();
secVtHeader2.command = commands[i];
//length: MUST be 0x0010.
secVtHeader2.length = verification_trailer_t.SEC_VT_HEADER2_LENGTH;
//PTYPE: MUST be the same as the PTYPE field in the request PDU header.
secVtHeader2.PTYPE = PTYPE;
secVtHeader2.reserved1 = 0;
secVtHeader2.reserved2 = 0;
secVtHeader2.drep = packed_drep;
secVtHeader2.call_id = call_id;
secVtHeader2.p_cont_id = p_cont_id;
secVtHeader2.opnum = opnum;
secVtList.Add(secVtHeader2);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_PCONTEXT:
rpc_sec_vt_pcontext secVtPcontext = new rpc_sec_vt_pcontext();
secVtPcontext.command = commands[i];
//length: MUST be set to 0x28.
secVtPcontext.length = verification_trailer_t.SEC_VT_PCONTEXT_LENGTH;
secVtPcontext.interfaceId = new p_syntax_id_t();
secVtPcontext.interfaceId.if_uuid = context.InterfaceId;
secVtPcontext.interfaceId.if_vers_major = context.InterfaceMajorVersion;
secVtPcontext.interfaceId.if_vers_minor = context.InterfaceMinorVersion;
secVtPcontext.transferSyntax = new p_syntax_id_t();
if (context.NdrVersion == RpceNdrVersion.NDR)
{
secVtPcontext.transferSyntax.if_uuid = RpceUtility.NDR_INTERFACE_UUID;
secVtPcontext.transferSyntax.if_vers_major = RpceUtility.NDR_INTERFACE_MAJOR_VERSION;
secVtPcontext.transferSyntax.if_vers_minor = RpceUtility.NDR_INTERFACE_MINOR_VERSION;
}
else if (context.NdrVersion == RpceNdrVersion.NDR64)
{
secVtPcontext.transferSyntax.if_uuid = RpceUtility.NDR64_INTERFACE_UUID;
secVtPcontext.transferSyntax.if_vers_major = RpceUtility.NDR64_INTERFACE_MAJOR_VERSION;
secVtPcontext.transferSyntax.if_vers_minor = RpceUtility.NDR64_INTERFACE_MINOR_VERSION;
}
else
{
throw new InvalidOperationException("Neither NDR nore NDR64 was negotiated.");
}
secVtList.Add(secVtPcontext);
break;
default:
throw new InvalidOperationException("Invalid SEC_VT_COMMAND.");
}
}
verificationTrailer.commands = secVtList.ToArray();
return(verificationTrailer);
}
/// <summary>
/// Unmarshal a verification trailer from byte array.
/// </summary>
/// <param name="verificationTrailerBuffer">byte array.</param>
public void FromBytes(byte[] verificationTrailerBuffer)
{
int padLength = -1;
for (int i = 0; i < verificationTrailerBuffer.Length; i++)
{
if ((verificationTrailerBuffer.Length - i) >= Marshal.SizeOf(verification_trailer_t.SIGNATURE) &&
BitConverter.ToUInt64(verificationTrailerBuffer, i) == verification_trailer_t.SIGNATURE)
{
padLength = i;
}
}
if (padLength < 0)
{
throw new InvalidOperationException("verification_trailer not found.");
}
using (BinaryReader reader = new BinaryReader(new MemoryStream(verificationTrailerBuffer)))
{
pad = reader.ReadBytes(padLength);
header.signature = reader.ReadBytes(sizeof(ulong));
List <SEC_VT> secVtList = new List <SEC_VT>();
while (reader.BaseStream.Position < verificationTrailerBuffer.Length)
{
if ((verificationTrailerBuffer.Length - reader.BaseStream.Position) < SEC_VT_HEADER_LENGTH)
{
break;
}
SEC_VT_COMMAND command = (SEC_VT_COMMAND)reader.ReadUInt16();
ushort length = reader.ReadUInt16();
if ((verificationTrailerBuffer.Length - reader.BaseStream.Position) < length)
{
//length of remain bytes is less than expected.
break;
}
switch (command
& ~(SEC_VT_COMMAND.SEC_VT_MUST_PROCESS_COMMAND | SEC_VT_COMMAND.SEC_VT_COMMAND_END))
{
case SEC_VT_COMMAND.SEC_VT_COMMAND_BITMASK_1:
rpc_sec_vt_bitmask secVtBitmask = new rpc_sec_vt_bitmask();
secVtBitmask.command = command;
secVtBitmask.length = length;
secVtBitmask.bits = reader.ReadUInt32();
secVtList.Add(secVtBitmask);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_PCONTEXT:
rpc_sec_vt_pcontext secVtPcontext = new rpc_sec_vt_pcontext();
secVtPcontext.command = command;
secVtPcontext.length = length;
secVtPcontext.interfaceId = new p_syntax_id_t();
secVtPcontext.interfaceId.if_uuid = new Guid(reader.ReadBytes(RpceUtility.GUID_SIZE));
secVtPcontext.interfaceId.if_vers_major = reader.ReadUInt16();
secVtPcontext.interfaceId.if_vers_minor = reader.ReadUInt16();
secVtPcontext.transferSyntax = new p_syntax_id_t();
secVtPcontext.transferSyntax.if_uuid = new Guid(reader.ReadBytes(RpceUtility.GUID_SIZE));
secVtPcontext.transferSyntax.if_vers_major = reader.ReadUInt16();
secVtPcontext.transferSyntax.if_vers_minor = reader.ReadUInt16();
secVtList.Add(secVtPcontext);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_HEADER2:
rpc_sec_vt_header2 secVtHeader2 = new rpc_sec_vt_header2();
secVtHeader2.command = command;
secVtHeader2.length = length;
secVtHeader2.PTYPE = (RpcePacketType)reader.ReadByte();
secVtHeader2.reserved1 = reader.ReadByte();
secVtHeader2.reserved2 = reader.ReadUInt16();
secVtHeader2.drep = new DataRepresentationFormatLabel();
secVtHeader2.drep.dataRepFormat = (RpceDataRepresentationFormat)reader.ReadUInt16();
secVtHeader2.drep.reserved = reader.ReadUInt16();
secVtHeader2.call_id = reader.ReadUInt32();
secVtHeader2.p_cont_id = reader.ReadUInt16();
secVtHeader2.opnum = reader.ReadUInt16();
secVtList.Add(secVtHeader2);
break;
default:
//do nothing
break;
}
}
commands = secVtList.ToArray();
}
}
/// <summary>
/// Create an verification trailer with commands parameter passed in to the method.
/// </summary>
/// <param name="commands">
/// A list of commands to be contained in the verification trailer.<para/>
/// Flag SEC_VT_COMMAND_END is ignored by input, and will be added to
/// the last command automatically.
/// </param>
/// <returns>
/// Created verification trailer. Pad is not added until appending to stub.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Thrown when commands is null.
/// </exception>
/// <exception cref="InvalidOperationException">
/// Thrown when a SEC_VT_COMMAND is invalid, or NDR/NDR64 was not negotiated.
/// </exception>
public verification_trailer_t CreateVerificationTrailer(
params SEC_VT_COMMAND[] commands)
{
if (commands == null)
{
throw new ArgumentNullException("commands");
}
verification_trailer_t verificationTrailer = new verification_trailer_t();
verificationTrailer.header = new rpc_sec_verification_trailer();
verificationTrailer.header.signature = BitConverter.GetBytes(verification_trailer_t.SIGNATURE);
List<SEC_VT> secVtList = new List<SEC_VT>();
for (int i = 0; i < commands.Length; i++)
{
switch (commands[i]
& ~(SEC_VT_COMMAND.SEC_VT_COMMAND_END | SEC_VT_COMMAND.SEC_VT_MUST_PROCESS_COMMAND))
{
case SEC_VT_COMMAND.SEC_VT_COMMAND_BITMASK_1:
rpc_sec_vt_bitmask secVtBitmask = new rpc_sec_vt_bitmask();
secVtBitmask.command = commands[i];
//length: MUST be 0x0004.
secVtBitmask.length = verification_trailer_t.SEC_VT_BITMASK_LENGTH;
//bits: The bits field is a bitmask.
//A server MUST ignore bits it does not understand.
//Currently, there is only one bit defined: CLIENT_SUPPORT_HEADER_SIGNING
//(bitmask of 0x00000001). If this bit is set, the PFC_SUPPORT_HEADER_SIGN
//bit, as specified in section 2.2.2.3, MUST be present in the PDU header
//for the bind PDU on this connection.
secVtBitmask.bits = context.SupportsHeaderSign ? (uint)0x00000001 : 0;
secVtList.Add(secVtBitmask);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_HEADER2:
rpc_sec_vt_header2 secVtHeader2 = new rpc_sec_vt_header2();
secVtHeader2.command = commands[i];
//length: MUST be 0x0010.
secVtHeader2.length = verification_trailer_t.SEC_VT_HEADER2_LENGTH;
//PTYPE: MUST be the same as the PTYPE field in the request PDU header.
secVtHeader2.PTYPE = PTYPE;
secVtHeader2.reserved1 = 0;
secVtHeader2.reserved2 = 0;
secVtHeader2.drep = packed_drep;
secVtHeader2.call_id = call_id;
secVtHeader2.p_cont_id = p_cont_id;
secVtHeader2.opnum = opnum;
secVtList.Add(secVtHeader2);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_PCONTEXT:
rpc_sec_vt_pcontext secVtPcontext = new rpc_sec_vt_pcontext();
secVtPcontext.command = commands[i];
//length: MUST be set to 0x28.
secVtPcontext.length = verification_trailer_t.SEC_VT_PCONTEXT_LENGTH;
secVtPcontext.interfaceId = new p_syntax_id_t();
secVtPcontext.interfaceId.if_uuid = context.InterfaceId;
secVtPcontext.interfaceId.if_vers_major = context.InterfaceMajorVersion;
secVtPcontext.interfaceId.if_vers_minor = context.InterfaceMinorVersion;
secVtPcontext.transferSyntax = new p_syntax_id_t();
if (context.NdrVersion == RpceNdrVersion.NDR)
{
secVtPcontext.transferSyntax.if_uuid = RpceUtility.NDR_INTERFACE_UUID;
secVtPcontext.transferSyntax.if_vers_major = RpceUtility.NDR_INTERFACE_MAJOR_VERSION;
secVtPcontext.transferSyntax.if_vers_minor = RpceUtility.NDR_INTERFACE_MINOR_VERSION;
}
else if (context.NdrVersion == RpceNdrVersion.NDR64)
{
secVtPcontext.transferSyntax.if_uuid = RpceUtility.NDR64_INTERFACE_UUID;
secVtPcontext.transferSyntax.if_vers_major = RpceUtility.NDR64_INTERFACE_MAJOR_VERSION;
secVtPcontext.transferSyntax.if_vers_minor = RpceUtility.NDR64_INTERFACE_MINOR_VERSION;
}
else
{
throw new InvalidOperationException("Neither NDR nore NDR64 was negotiated.");
}
secVtList.Add(secVtPcontext);
break;
default:
throw new InvalidOperationException("Invalid SEC_VT_COMMAND.");
}
}
verificationTrailer.commands = secVtList.ToArray();
return verificationTrailer;
}
/// <summary>
/// Marshal the verification trailer to a byte array.
/// </summary>
/// <returns>
/// A byte array.
/// </returns>
public byte[] ToBytes()
{
byte[] buf = new byte[GetSize()];
using (BinaryWriter writer = new BinaryWriter(new MemoryStream(buf)))
{
if (pad != null)
{
writer.Write(pad);
}
if (header.signature != null)
{
writer.Write(header.signature);
}
if (commands != null)
{
for (int i = 0; i < commands.Length; i++)
{
if (commands[i] != null)
{
Type type = commands[i].GetType();
if (type == typeof(rpc_sec_vt_bitmask))
{
rpc_sec_vt_bitmask secVtBitmask = (rpc_sec_vt_bitmask)commands[i];
writer.Write((ushort)secVtBitmask.command);
writer.Write(secVtBitmask.length);
writer.Write(secVtBitmask.bits);
}
else if (type == typeof(rpc_sec_vt_header2))
{
rpc_sec_vt_header2 secVtHeader2 = (rpc_sec_vt_header2)commands[i];
writer.Write((ushort)secVtHeader2.command);
writer.Write(secVtHeader2.length);
writer.Write((byte)secVtHeader2.PTYPE);
writer.Write(secVtHeader2.reserved1);
writer.Write(secVtHeader2.reserved2);
writer.Write((ushort)secVtHeader2.drep.dataRepFormat);
writer.Write(secVtHeader2.drep.reserved);
writer.Write(secVtHeader2.call_id);
writer.Write(secVtHeader2.p_cont_id);
writer.Write(secVtHeader2.opnum);
}
else if (type == typeof(rpc_sec_vt_pcontext))
{
rpc_sec_vt_pcontext secVtPcontext = (rpc_sec_vt_pcontext)commands[i];
writer.Write((ushort)secVtPcontext.command);
writer.Write(secVtPcontext.length);
writer.Write(secVtPcontext.interfaceId.if_uuid.ToByteArray());
writer.Write(secVtPcontext.interfaceId.if_vers_major);
writer.Write(secVtPcontext.interfaceId.if_vers_minor);
writer.Write(secVtPcontext.transferSyntax.if_uuid.ToByteArray());
writer.Write(secVtPcontext.transferSyntax.if_vers_major);
writer.Write(secVtPcontext.transferSyntax.if_vers_minor);
}
else
{
// we called GetSize() before, this won't happen.
throw new InvalidOperationException("Invalid SEC_VT type.");
}
}
}
}
}
return(buf);
}
/// <summary>
/// Unmarshal a verification trailer from byte array.
/// </summary>
/// <param name="verificationTrailerBuffer">byte array.</param>
public void FromBytes(byte[] verificationTrailerBuffer)
{
int padLength = -1;
for (int i = 0; i < verificationTrailerBuffer.Length; i++)
{
if ((verificationTrailerBuffer.Length - i) >= Marshal.SizeOf(verification_trailer_t.SIGNATURE)
&& BitConverter.ToUInt64(verificationTrailerBuffer, i) == verification_trailer_t.SIGNATURE)
{
padLength = i;
}
}
if (padLength < 0)
{
throw new InvalidOperationException("verification_trailer not found.");
}
using (BinaryReader reader = new BinaryReader(new MemoryStream(verificationTrailerBuffer)))
{
pad = reader.ReadBytes(padLength);
header.signature = reader.ReadBytes(sizeof(ulong));
List<SEC_VT> secVtList = new List<SEC_VT>();
while (reader.BaseStream.Position < verificationTrailerBuffer.Length)
{
if ((verificationTrailerBuffer.Length - reader.BaseStream.Position) < SEC_VT_HEADER_LENGTH)
{
break;
}
SEC_VT_COMMAND command = (SEC_VT_COMMAND)reader.ReadUInt16();
ushort length = reader.ReadUInt16();
if ((verificationTrailerBuffer.Length - reader.BaseStream.Position) < length)
{
//length of remain bytes is less than expected.
break;
}
switch (command
& ~(SEC_VT_COMMAND.SEC_VT_MUST_PROCESS_COMMAND | SEC_VT_COMMAND.SEC_VT_COMMAND_END))
{
case SEC_VT_COMMAND.SEC_VT_COMMAND_BITMASK_1:
rpc_sec_vt_bitmask secVtBitmask = new rpc_sec_vt_bitmask();
secVtBitmask.command = command;
secVtBitmask.length = length;
secVtBitmask.bits = reader.ReadUInt32();
secVtList.Add(secVtBitmask);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_PCONTEXT:
rpc_sec_vt_pcontext secVtPcontext = new rpc_sec_vt_pcontext();
secVtPcontext.command = command;
secVtPcontext.length = length;
secVtPcontext.interfaceId = new p_syntax_id_t();
secVtPcontext.interfaceId.if_uuid = new Guid(reader.ReadBytes(RpceUtility.GUID_SIZE));
secVtPcontext.interfaceId.if_vers_major = reader.ReadUInt16();
secVtPcontext.interfaceId.if_vers_minor = reader.ReadUInt16();
secVtPcontext.transferSyntax = new p_syntax_id_t();
secVtPcontext.transferSyntax.if_uuid = new Guid(reader.ReadBytes(RpceUtility.GUID_SIZE));
secVtPcontext.transferSyntax.if_vers_major = reader.ReadUInt16();
secVtPcontext.transferSyntax.if_vers_minor = reader.ReadUInt16();
secVtList.Add(secVtPcontext);
break;
case SEC_VT_COMMAND.SEC_VT_COMMAND_HEADER2:
rpc_sec_vt_header2 secVtHeader2 = new rpc_sec_vt_header2();
secVtHeader2.command = command;
secVtHeader2.length = length;
secVtHeader2.PTYPE = (RpcePacketType)reader.ReadByte();
secVtHeader2.reserved1 = reader.ReadByte();
secVtHeader2.reserved2 = reader.ReadUInt16();
secVtHeader2.drep = new DataRepresentationFormatLabel();
secVtHeader2.drep.dataRepFormat = (RpceDataRepresentationFormat)reader.ReadUInt16();
secVtHeader2.drep.reserved = reader.ReadUInt16();
secVtHeader2.call_id = reader.ReadUInt32();
secVtHeader2.p_cont_id = reader.ReadUInt16();
secVtHeader2.opnum = reader.ReadUInt16();
secVtList.Add(secVtHeader2);
break;
default:
//do nothing
break;
}
}
commands = secVtList.ToArray();
}
}