windows-nt/Source/XPSP1/NT/net/rras/ras/ppp/raschap/slsa.c

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2020-09-26 03:20:57 -05:00
/* Copyright (c) 1993, Microsoft Corporation, all rights reserved
**
** slsa.c
** Server-side LSA Authentication Utilities
**
** 11/10/93 MikeSa Pulled from NT 3.1 RAS authentication.
** 11/12/93 SteveC Do clear-text authentication when Challenge is NULL
*/
#define UNICODE
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <ntlsa.h>
#include <ntmsv1_0.h>
#include <ntsamp.h>
#include <crypt.h>
#include <windows.h>
#include <lmcons.h>
#include <lmapibuf.h>
#include <lmaccess.h>
#include <rasfmsub.h>
#include <stdlib.h>
#include <rtutils.h>
#include <lmcons.h>
#include <lmaccess.h>
#include <lmapibuf.h>
#include <mprapi.h>
#include <rasman.h>
#include <rasauth.h>
#include <pppcp.h>
#include <raserror.h>
#include <stdio.h>
#include <md5.h>
#define INCL_MISC
#include <ppputil.h>
#include "raschap.h"
static DWORD g_dwAuthPkgId;
//**
//
// Call:
//
// Returns: NO_ERROR - Success
// Non-zero returns - Failure
//
// Description:
//
DWORD
InitLSA(
VOID
)
{
NTSTATUS ntstatus;
STRING PackageName;
//
// To be able to call into NTLM, we need a handle to the LSA.
//
ntstatus = LsaConnectUntrusted(&g_hLsa);
if ( ntstatus != STATUS_SUCCESS )
{
return( RtlNtStatusToDosError( ntstatus ) );
}
//
// We use the MSV1_0 authentication package for LM2.x logons. We get
// to MSV1_0 via the Lsa. So we call Lsa to get MSV1_0's package id,
// which we'll use in later calls to Lsa.
//
RtlInitString(&PackageName, MSV1_0_PACKAGE_NAME);
ntstatus = LsaLookupAuthenticationPackage(g_hLsa, &PackageName, &g_dwAuthPkgId);
return( RtlNtStatusToDosError( ntstatus ) );
}
//**
//
// Call:
//
// Returns: NO_ERROR - Success
// Non-zero returns - Failure
//
// Description:
//
VOID
EndLSA(
VOID
)
{
LsaDeregisterLogonProcess( g_hLsa );
}
//** -GetChallenge
//
// Function:
// Calls Lsa to get LM 2.0 challenge to send client during
// authentication
//
// Returns:
// 0 - success
// 1 - Lsa error
//
// History:
// 05/18/92 - Michael Salamone (MikeSa) - Original Version 1.0
//**
DWORD GetChallenge(
OUT PBYTE pChallenge
)
{
MSV1_0_LM20_CHALLENGE_REQUEST ChallengeRequest;
PMSV1_0_LM20_CHALLENGE_RESPONSE pChallengeResponse;
DWORD dwChallengeResponseLength;
NTSTATUS Status;
NTSTATUS PStatus;
ChallengeRequest.MessageType = MsV1_0Lm20ChallengeRequest;
Status = LsaCallAuthenticationPackage(
g_hLsa,
g_dwAuthPkgId,
&ChallengeRequest,
sizeof(MSV1_0_LM20_CHALLENGE_REQUEST),
(PVOID) &pChallengeResponse,
&dwChallengeResponseLength,
&PStatus
);
if ( Status != STATUS_SUCCESS )
{
return( RtlNtStatusToDosError( Status ) );
}
else if ( PStatus != STATUS_SUCCESS )
{
return( RtlNtStatusToDosError( PStatus ) );
}
else
{
RtlMoveMemory(pChallenge, pChallengeResponse->ChallengeToClient,
MSV1_0_CHALLENGE_LENGTH);
LsaFreeReturnBuffer(pChallengeResponse);
return (0);
}
}