/// <summary>
/// Encodes ONC/RPC authentication information in form of a credential
/// and a verifier when sending an ONC/RPC call message.
/// </summary>
/// <remarks>
/// Encodes ONC/RPC authentication information in form of a credential
/// and a verifier when sending an ONC/RPC call message. The
/// <code>AUTH_UNIX</code> authentication method only uses the credential
/// but no verifier. If the ONC/RPC server sent a <code>AUTH_SHORT</code>
/// "shorthand" credential together with the previous reply message, it
/// is used instead of the original credential.
/// </remarks>
/// <param name="xdr">
/// XDR stream where to encode the credential and the verifier
/// to.
/// </param>
/// <exception cref="OncRpcException">if an ONC/RPC error occurs.</exception>
/// <exception cref="System.IO.IOException">if an I/O error occurs.</exception>
/// <exception cref="org.acplt.oncrpc.OncRpcException"></exception>
internal override void xdrEncodeCredVerf(org.acplt.oncrpc.XdrEncodingStream xdr)
{
if (shorthandCred == null)
{
//
// Encode the credential, which contains some unsecure information
// about user and group ID, etc. Note that the credential itself
// is encoded as a variable-sized bunch of octets.
//
if ((gids.Length > org.acplt.oncrpc.OncRpcAuthConstants.ONCRPC_MAX_GROUPS) || (machinename
.Length > org.acplt.oncrpc.OncRpcAuthConstants.ONCRPC_MAX_MACHINE_NAME))
{
throw (new org.acplt.oncrpc.OncRpcAuthenticationException(org.acplt.oncrpc.OncRpcAuthStatus
.ONCRPC_AUTH_FAILED));
}
xdr.xdrEncodeInt(org.acplt.oncrpc.OncRpcAuthType.ONCRPC_AUTH_UNIX);
int len = 4 + ((machinename.Length + 7) & ~3) + 4 + 4 + gids.Length * 4 + 4;
// length of stamp
// len string incl. len
// length of uid
// length of gid
// length of vector of gids incl. len
if (len > org.acplt.oncrpc.OncRpcAuthConstants.ONCRPC_MAX_AUTH_BYTES)
{
throw (new org.acplt.oncrpc.OncRpcAuthenticationException(org.acplt.oncrpc.OncRpcAuthStatus
.ONCRPC_AUTH_FAILED));
}
xdr.xdrEncodeInt(len);
xdr.xdrEncodeInt(stamp);
xdr.xdrEncodeString(machinename);
xdr.xdrEncodeInt(uid);
xdr.xdrEncodeInt(gid);
xdr.xdrEncodeIntVector(gids);
}
else
{
//
// Use shorthand credential instead of original credential.
//
xdr.xdrEncodeInt(org.acplt.oncrpc.OncRpcAuthType.ONCRPC_AUTH_SHORT);
xdr.xdrEncodeDynamicOpaque(shorthandCred);
}
//
// We also need to encode the verifier, which is always of
// type AUTH_NONE.
//
xdr.xdrEncodeInt(org.acplt.oncrpc.OncRpcAuthType.ONCRPC_AUTH_NONE);
xdr.xdrEncodeInt(0);
}
