1098 lines
30 KiB
C
1098 lines
30 KiB
C
/**
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* WinPR: Windows Portable Runtime
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* NTLM Security Package
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*
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* Copyright 2011-2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <time.h>
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#include <openssl/des.h>
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#include <openssl/md4.h>
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#include <openssl/hmac.h>
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#include <openssl/rand.h>
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#include <openssl/engine.h>
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#include <winpr/crt.h>
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#include <winpr/sspi.h>
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#include <winpr/print.h>
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#include <winpr/sysinfo.h>
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#include <winpr/registry.h>
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#include "ntlm.h"
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#include "../sspi.h"
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#include "ntlm_message.h"
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char* NTLM_PACKAGE_NAME = "NTLM";
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int ntlm_SetContextWorkstation(NTLM_CONTEXT* context, char* Workstation)
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{
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int status;
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DWORD nSize = 0;
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char* ws = Workstation;
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if (!Workstation)
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{
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GetComputerNameExA(ComputerNameNetBIOS, NULL, &nSize);
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ws = (char*) malloc(nSize);
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if (!ws)
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return -1;
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if (!GetComputerNameExA(ComputerNameNetBIOS, ws, &nSize))
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return 0;
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}
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context->Workstation.Buffer = NULL;
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status = ConvertToUnicode(CP_UTF8, 0, ws, -1, &context->Workstation.Buffer, 0);
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free(ws);
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if (status <= 0)
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return -1;
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context->Workstation.Length = (USHORT) (status - 1);
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context->Workstation.Length *= 2;
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if (!Workstation)
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free(Workstation);
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return 1;
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}
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int ntlm_SetContextServicePrincipalNameW(NTLM_CONTEXT* context, LPWSTR ServicePrincipalName)
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{
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if (!ServicePrincipalName)
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{
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context->ServicePrincipalName.Buffer = NULL;
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context->ServicePrincipalName.Length = 0;
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return 1;
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}
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context->ServicePrincipalName.Length = _wcslen(ServicePrincipalName) * 2;
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context->ServicePrincipalName.Buffer = (PWSTR) malloc(context->ServicePrincipalName.Length + 2);
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if (!context->ServicePrincipalName.Buffer)
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return -1;
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CopyMemory(context->ServicePrincipalName.Buffer, ServicePrincipalName, context->ServicePrincipalName.Length + 2);
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return 1;
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}
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int ntlm_SetContextServicePrincipalNameA(NTLM_CONTEXT* context, char* ServicePrincipalName)
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{
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int status;
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context->ServicePrincipalName.Buffer = NULL;
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status = ConvertToUnicode(CP_UTF8, 0, ServicePrincipalName, -1, &context->ServicePrincipalName.Buffer, 0);
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if (status <= 0)
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return -1;
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context->ServicePrincipalName.Length = (USHORT) ((status - 1) * 2);
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return 1;
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}
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int ntlm_SetContextTargetName(NTLM_CONTEXT* context, char* TargetName)
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{
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int status;
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DWORD nSize = 0;
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char* name = TargetName;
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if (!TargetName)
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{
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if (!GetComputerNameExA(ComputerNameDnsHostname, NULL, &nSize))
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return -1;
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name = (char*) malloc(nSize);
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if (!name)
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return -1;
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if (!GetComputerNameExA(ComputerNameDnsHostname, name, &nSize))
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return -1;
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CharUpperA(TargetName);
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}
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context->TargetName.pvBuffer = NULL;
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status = ConvertToUnicode(CP_UTF8, 0, name, -1, (LPWSTR*) &context->TargetName.pvBuffer, 0);
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if (status <= 0)
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return -1;
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context->TargetName.cbBuffer = (USHORT) ((status - 1) * 2);
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if (!TargetName)
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free(name);
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return 1;
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}
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NTLM_CONTEXT* ntlm_ContextNew()
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{
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HKEY hKey;
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LONG status;
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DWORD dwType;
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DWORD dwSize;
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DWORD dwValue;
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NTLM_CONTEXT* context;
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context = (NTLM_CONTEXT*) calloc(1, sizeof(NTLM_CONTEXT));
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if (!context)
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return NULL;
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context->NTLMv2 = TRUE;
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context->UseMIC = FALSE;
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context->SendVersionInfo = TRUE;
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context->SendSingleHostData = FALSE;
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context->SendWorkstationName = TRUE;
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context->NegotiateKeyExchange = TRUE;
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context->UseSamFileDatabase = TRUE;
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status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("Software\\WinPR\\NTLM"), 0, KEY_READ | KEY_WOW64_64KEY, &hKey);
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if (status == ERROR_SUCCESS)
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{
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if (RegQueryValueEx(hKey, _T("NTLMv2"), NULL, &dwType, (BYTE*) &dwValue, &dwSize) == ERROR_SUCCESS)
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context->NTLMv2 = dwValue ? 1 : 0;
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if (RegQueryValueEx(hKey, _T("UseMIC"), NULL, &dwType, (BYTE*) &dwValue, &dwSize) == ERROR_SUCCESS)
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context->UseMIC = dwValue ? 1 : 0;
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if (RegQueryValueEx(hKey, _T("SendVersionInfo"), NULL, &dwType, (BYTE*) &dwValue, &dwSize) == ERROR_SUCCESS)
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context->SendVersionInfo = dwValue ? 1 : 0;
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if (RegQueryValueEx(hKey, _T("SendSingleHostData"), NULL, &dwType, (BYTE*) &dwValue, &dwSize) == ERROR_SUCCESS)
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context->SendSingleHostData = dwValue ? 1 : 0;
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if (RegQueryValueEx(hKey, _T("SendWorkstationName"), NULL, &dwType, (BYTE*) &dwValue, &dwSize) == ERROR_SUCCESS)
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context->SendWorkstationName = dwValue ? 1 : 0;
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if (RegQueryValueEx(hKey, _T("WorkstationName"), NULL, &dwType, NULL, &dwSize) == ERROR_SUCCESS)
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{
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char* workstation = (char*) malloc(dwSize + 1);
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if (!workstation)
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return NULL;
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status = RegQueryValueExA(hKey, "WorkstationName", NULL, &dwType, (BYTE*) workstation, &dwSize);
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workstation[dwSize] = '\0';
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if (ntlm_SetContextWorkstation(context, workstation) < 0)
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return NULL;
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free(workstation);
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}
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RegCloseKey(hKey);
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}
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/*
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* Extended Protection is enabled by default in Windows 7,
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* but enabling it in WinPR breaks TS Gateway at this point
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*/
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context->SuppressExtendedProtection = FALSE;
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status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("System\\CurrentControlSet\\Control\\LSA"), 0, KEY_READ | KEY_WOW64_64KEY, &hKey);
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if (status == ERROR_SUCCESS)
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{
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if (RegQueryValueEx(hKey, _T("SuppressExtendedProtection"), NULL, &dwType, (BYTE*) &dwValue, &dwSize) == ERROR_SUCCESS)
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context->SuppressExtendedProtection = dwValue ? 1 : 0;
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RegCloseKey(hKey);
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}
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context->NegotiateFlags = 0;
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context->LmCompatibilityLevel = 3;
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context->state = NTLM_STATE_INITIAL;
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FillMemory(context->MachineID, sizeof(context->MachineID), 0xAA);
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if (context->NTLMv2)
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context->UseMIC = TRUE;
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return context;
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}
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void ntlm_ContextFree(NTLM_CONTEXT* context)
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{
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if (!context)
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return;
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sspi_SecBufferFree(&context->NegotiateMessage);
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sspi_SecBufferFree(&context->ChallengeMessage);
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sspi_SecBufferFree(&context->AuthenticateMessage);
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sspi_SecBufferFree(&context->ChallengeTargetInfo);
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sspi_SecBufferFree(&context->TargetName);
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sspi_SecBufferFree(&context->NtChallengeResponse);
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sspi_SecBufferFree(&context->LmChallengeResponse);
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free(context->ServicePrincipalName.Buffer);
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free(context->Workstation.Buffer);
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free(context);
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}
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SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(SEC_WCHAR* pszPrincipal, SEC_WCHAR* pszPackage,
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ULONG fCredentialUse, void* pvLogonID, void* pAuthData, SEC_GET_KEY_FN pGetKeyFn,
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void* pvGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
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{
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SSPI_CREDENTIALS* credentials;
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SEC_WINNT_AUTH_IDENTITY* identity;
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if ((fCredentialUse != SECPKG_CRED_OUTBOUND) &&
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(fCredentialUse != SECPKG_CRED_INBOUND) &&
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(fCredentialUse != SECPKG_CRED_BOTH))
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{
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return SEC_E_INVALID_PARAMETER;
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}
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credentials = sspi_CredentialsNew();
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if (!credentials)
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return SEC_E_INTERNAL_ERROR;
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credentials->fCredentialUse = fCredentialUse;
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credentials->pGetKeyFn = pGetKeyFn;
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credentials->pvGetKeyArgument = pvGetKeyArgument;
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identity = (SEC_WINNT_AUTH_IDENTITY*) pAuthData;
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if (identity)
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sspi_CopyAuthIdentity(&(credentials->identity), identity);
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sspi_SecureHandleSetLowerPointer(phCredential, (void*) credentials);
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sspi_SecureHandleSetUpperPointer(phCredential, (void*) NTLM_PACKAGE_NAME);
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return SEC_E_OK;
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}
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SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(SEC_CHAR* pszPrincipal, SEC_CHAR* pszPackage,
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ULONG fCredentialUse, void* pvLogonID, void* pAuthData, SEC_GET_KEY_FN pGetKeyFn,
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void* pvGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
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{
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SSPI_CREDENTIALS* credentials;
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SEC_WINNT_AUTH_IDENTITY* identity;
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if ((fCredentialUse != SECPKG_CRED_OUTBOUND) &&
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(fCredentialUse != SECPKG_CRED_INBOUND) &&
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(fCredentialUse != SECPKG_CRED_BOTH))
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{
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return SEC_E_INVALID_PARAMETER;
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}
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credentials = sspi_CredentialsNew();
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if (!credentials)
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return SEC_E_INTERNAL_ERROR;
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credentials->fCredentialUse = fCredentialUse;
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credentials->pGetKeyFn = pGetKeyFn;
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credentials->pvGetKeyArgument = pvGetKeyArgument;
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identity = (SEC_WINNT_AUTH_IDENTITY*) pAuthData;
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if (identity)
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sspi_CopyAuthIdentity(&(credentials->identity), identity);
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sspi_SecureHandleSetLowerPointer(phCredential, (void*) credentials);
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sspi_SecureHandleSetUpperPointer(phCredential, (void*) NTLM_PACKAGE_NAME);
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return SEC_E_OK;
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}
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SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(PCredHandle phCredential)
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{
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SSPI_CREDENTIALS* credentials;
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if (!phCredential)
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return SEC_E_INVALID_HANDLE;
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credentials = (SSPI_CREDENTIALS*) sspi_SecureHandleGetLowerPointer(phCredential);
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if (!credentials)
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return SEC_E_INVALID_HANDLE;
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sspi_CredentialsFree(credentials);
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return SEC_E_OK;
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}
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SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(PCredHandle phCredential, ULONG ulAttribute, void* pBuffer)
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{
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if (ulAttribute == SECPKG_CRED_ATTR_NAMES)
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{
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return SEC_E_OK;
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}
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return SEC_E_UNSUPPORTED_FUNCTION;
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}
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SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(PCredHandle phCredential, ULONG ulAttribute, void* pBuffer)
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{
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return ntlm_QueryCredentialsAttributesW(phCredential, ulAttribute, pBuffer);
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}
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/**
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* @see http://msdn.microsoft.com/en-us/library/windows/desktop/aa374707
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*/
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SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(PCredHandle phCredential, PCtxtHandle phContext,
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PSecBufferDesc pInput, ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
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PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsTimeStamp)
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{
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NTLM_CONTEXT* context;
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SECURITY_STATUS status;
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SSPI_CREDENTIALS* credentials;
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PSecBuffer input_buffer;
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PSecBuffer output_buffer;
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context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
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if (!context)
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{
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context = ntlm_ContextNew();
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if (!context)
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return SEC_E_INSUFFICIENT_MEMORY;
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context->server = TRUE;
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if (fContextReq & ASC_REQ_CONFIDENTIALITY)
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context->confidentiality = TRUE;
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credentials = (SSPI_CREDENTIALS*) sspi_SecureHandleGetLowerPointer(phCredential);
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context->credentials = credentials;
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ntlm_SetContextTargetName(context, NULL);
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sspi_SecureHandleSetLowerPointer(phNewContext, context);
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sspi_SecureHandleSetUpperPointer(phNewContext, (void*) NTLM_PACKAGE_NAME);
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}
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if (context->state == NTLM_STATE_INITIAL)
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{
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context->state = NTLM_STATE_NEGOTIATE;
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if (!pInput)
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return SEC_E_INVALID_TOKEN;
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if (pInput->cBuffers < 1)
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return SEC_E_INVALID_TOKEN;
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input_buffer = sspi_FindSecBuffer(pInput, SECBUFFER_TOKEN);
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if (!input_buffer)
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return SEC_E_INVALID_TOKEN;
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if (input_buffer->cbBuffer < 1)
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return SEC_E_INVALID_TOKEN;
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status = ntlm_read_NegotiateMessage(context, input_buffer);
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if (context->state == NTLM_STATE_CHALLENGE)
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{
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if (!pOutput)
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return SEC_E_INVALID_TOKEN;
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if (pOutput->cBuffers < 1)
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return SEC_E_INVALID_TOKEN;
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output_buffer = sspi_FindSecBuffer(pOutput, SECBUFFER_TOKEN);
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if (!output_buffer->BufferType)
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return SEC_E_INVALID_TOKEN;
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if (output_buffer->cbBuffer < 1)
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return SEC_E_INSUFFICIENT_MEMORY;
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return ntlm_write_ChallengeMessage(context, output_buffer);
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}
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return SEC_E_OUT_OF_SEQUENCE;
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}
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else if (context->state == NTLM_STATE_AUTHENTICATE)
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{
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if (!pInput)
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return SEC_E_INVALID_TOKEN;
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if (pInput->cBuffers < 1)
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return SEC_E_INVALID_TOKEN;
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input_buffer = sspi_FindSecBuffer(pInput, SECBUFFER_TOKEN);
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if (!input_buffer)
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return SEC_E_INVALID_TOKEN;
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if (input_buffer->cbBuffer < 1)
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return SEC_E_INVALID_TOKEN;
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status = ntlm_read_AuthenticateMessage(context, input_buffer);
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if (pOutput)
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{
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ULONG i;
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for (i = 0; i < pOutput->cBuffers; i++)
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{
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pOutput->pBuffers[i].cbBuffer = 0;
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pOutput->pBuffers[i].BufferType = SECBUFFER_TOKEN;
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}
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}
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return status;
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}
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return SEC_E_OUT_OF_SEQUENCE;
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}
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SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
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{
|
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return SEC_E_OK;
|
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}
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SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(PCredHandle phCredential, PCtxtHandle phContext,
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SEC_WCHAR* pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
|
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PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
|
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PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsExpiry)
|
|
{
|
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NTLM_CONTEXT* context;
|
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SECURITY_STATUS status;
|
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SSPI_CREDENTIALS* credentials;
|
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PSecBuffer input_buffer = NULL;
|
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PSecBuffer output_buffer = NULL;
|
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PSecBuffer channel_bindings = NULL;
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context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
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if (!context)
|
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{
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context = ntlm_ContextNew();
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|
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if (!context)
|
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return SEC_E_INSUFFICIENT_MEMORY;
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|
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if (fContextReq & ISC_REQ_CONFIDENTIALITY)
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context->confidentiality = TRUE;
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credentials = (SSPI_CREDENTIALS*) sspi_SecureHandleGetLowerPointer(phCredential);
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context->credentials = credentials;
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if (context->Workstation.Length < 1)
|
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{
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if (ntlm_SetContextWorkstation(context, NULL) < 0)
|
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return SEC_E_INTERNAL_ERROR;
|
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}
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if (ntlm_SetContextServicePrincipalNameW(context, pszTargetName) < 0)
|
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return SEC_E_INTERNAL_ERROR;
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|
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sspi_SecureHandleSetLowerPointer(phNewContext, context);
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sspi_SecureHandleSetUpperPointer(phNewContext, (void*) NTLM_PACKAGE_NAME);
|
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}
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if ((!pInput) || (context->state == NTLM_STATE_AUTHENTICATE))
|
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{
|
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if (!pOutput)
|
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return SEC_E_INVALID_TOKEN;
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|
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if (pOutput->cBuffers < 1)
|
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return SEC_E_INVALID_TOKEN;
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|
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output_buffer = sspi_FindSecBuffer(pOutput, SECBUFFER_TOKEN);
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|
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if (!output_buffer)
|
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return SEC_E_INVALID_TOKEN;
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|
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if (output_buffer->cbBuffer < 1)
|
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return SEC_E_INVALID_TOKEN;
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|
|
if (context->state == NTLM_STATE_INITIAL)
|
|
context->state = NTLM_STATE_NEGOTIATE;
|
|
|
|
if (context->state == NTLM_STATE_NEGOTIATE)
|
|
return ntlm_write_NegotiateMessage(context, output_buffer);
|
|
|
|
return SEC_E_OUT_OF_SEQUENCE;
|
|
}
|
|
else
|
|
{
|
|
if (pInput->cBuffers < 1)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
input_buffer = sspi_FindSecBuffer(pInput, SECBUFFER_TOKEN);
|
|
|
|
if (!input_buffer)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
if (input_buffer->cbBuffer < 1)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
channel_bindings = sspi_FindSecBuffer(pInput, SECBUFFER_CHANNEL_BINDINGS);
|
|
|
|
if (channel_bindings)
|
|
{
|
|
context->Bindings.BindingsLength = channel_bindings->cbBuffer;
|
|
context->Bindings.Bindings = (SEC_CHANNEL_BINDINGS*) channel_bindings->pvBuffer;
|
|
}
|
|
|
|
if (context->state == NTLM_STATE_CHALLENGE)
|
|
{
|
|
status = ntlm_read_ChallengeMessage(context, input_buffer);
|
|
|
|
if (!pOutput)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
if (pOutput->cBuffers < 1)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
output_buffer = sspi_FindSecBuffer(pOutput, SECBUFFER_TOKEN);
|
|
|
|
if (!output_buffer)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
if (output_buffer->cbBuffer < 1)
|
|
return SEC_E_INSUFFICIENT_MEMORY;
|
|
|
|
if (context->state == NTLM_STATE_AUTHENTICATE)
|
|
return ntlm_write_AuthenticateMessage(context, output_buffer);
|
|
}
|
|
|
|
return SEC_E_OUT_OF_SEQUENCE;
|
|
}
|
|
|
|
return SEC_E_OUT_OF_SEQUENCE;
|
|
}
|
|
|
|
/**
|
|
* @see http://msdn.microsoft.com/en-us/library/windows/desktop/aa375512%28v=vs.85%29.aspx
|
|
*/
|
|
SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(PCredHandle phCredential, PCtxtHandle phContext,
|
|
SEC_CHAR* pszTargetName, ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
|
|
PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
|
|
PSecBufferDesc pOutput, PULONG pfContextAttr, PTimeStamp ptsExpiry)
|
|
{
|
|
SECURITY_STATUS status;
|
|
SEC_WCHAR* pszTargetNameW = NULL;
|
|
|
|
if (pszTargetName)
|
|
{
|
|
if (ConvertToUnicode(CP_UTF8, 0, pszTargetName, -1, &pszTargetNameW, 0) <= 0)
|
|
return SEC_E_INTERNAL_ERROR;
|
|
}
|
|
|
|
status = ntlm_InitializeSecurityContextW(phCredential, phContext, pszTargetNameW, fContextReq,
|
|
Reserved1, TargetDataRep, pInput, Reserved2, phNewContext, pOutput, pfContextAttr, ptsExpiry);
|
|
|
|
if (pszTargetNameW)
|
|
free(pszTargetNameW);
|
|
|
|
return status;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext, PSecBufferDesc pToken)
|
|
{
|
|
NTLM_CONTEXT* context;
|
|
SECURITY_STATUS status = SEC_E_OK;
|
|
|
|
context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
|
|
|
|
if (!context)
|
|
return SEC_E_INVALID_HANDLE;
|
|
|
|
if (context->server)
|
|
{
|
|
status = ntlm_server_AuthenticateComplete(context);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/* http://msdn.microsoft.com/en-us/library/windows/desktop/aa375354 */
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
|
|
{
|
|
NTLM_CONTEXT* context;
|
|
|
|
context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
|
|
|
|
if (!context)
|
|
return SEC_E_INVALID_HANDLE;
|
|
|
|
ntlm_ContextFree(context);
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
/* http://msdn.microsoft.com/en-us/library/windows/desktop/aa379337/ */
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer)
|
|
{
|
|
NTLM_CONTEXT* context;
|
|
|
|
if (!phContext)
|
|
return SEC_E_INVALID_HANDLE;
|
|
|
|
if (!pBuffer)
|
|
return SEC_E_INSUFFICIENT_MEMORY;
|
|
|
|
context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
|
|
|
|
if (ulAttribute == SECPKG_ATTR_SIZES)
|
|
{
|
|
SecPkgContext_Sizes* ContextSizes = (SecPkgContext_Sizes*) pBuffer;
|
|
|
|
ContextSizes->cbMaxToken = 2010;
|
|
ContextSizes->cbMaxSignature = 16;
|
|
ContextSizes->cbBlockSize = 0;
|
|
ContextSizes->cbSecurityTrailer = 16;
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
else if (ulAttribute == SECPKG_ATTR_AUTH_IDENTITY)
|
|
{
|
|
int status;
|
|
char* UserA = NULL;
|
|
char* DomainA = NULL;
|
|
SSPI_CREDENTIALS* credentials;
|
|
SecPkgContext_AuthIdentity* AuthIdentity = (SecPkgContext_AuthIdentity*) pBuffer;
|
|
|
|
context->UseSamFileDatabase = FALSE;
|
|
|
|
credentials = context->credentials;
|
|
ZeroMemory(AuthIdentity, sizeof(SecPkgContext_AuthIdentity));
|
|
|
|
UserA = AuthIdentity->User;
|
|
status = ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) credentials->identity.User,
|
|
credentials->identity.UserLength,
|
|
&UserA, 256, NULL, NULL);
|
|
|
|
if (status <= 0)
|
|
return SEC_E_INTERNAL_ERROR;
|
|
|
|
DomainA = AuthIdentity->Domain;
|
|
status = ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) credentials->identity.Domain,
|
|
credentials->identity.DomainLength,
|
|
&DomainA, 256, NULL, NULL);
|
|
|
|
if (status <= 0)
|
|
return SEC_E_INTERNAL_ERROR;
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
return SEC_E_UNSUPPORTED_FUNCTION;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer)
|
|
{
|
|
return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_SetContextAttributesW(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer, ULONG cbBuffer)
|
|
{
|
|
NTLM_CONTEXT* context;
|
|
|
|
if (!phContext)
|
|
return SEC_E_INVALID_HANDLE;
|
|
|
|
if (!pBuffer)
|
|
return SEC_E_INVALID_PARAMETER;
|
|
|
|
context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
|
|
|
|
if (ulAttribute == SECPKG_ATTR_AUTH_NTLM_HASH)
|
|
{
|
|
SecPkgContext_AuthNtlmHash* AuthNtlmHash = (SecPkgContext_AuthNtlmHash*) pBuffer;
|
|
|
|
if (cbBuffer < sizeof(SecPkgContext_AuthNtlmHash))
|
|
return SEC_E_INVALID_PARAMETER;
|
|
|
|
if (AuthNtlmHash->Version == 1)
|
|
CopyMemory(context->NtlmHash, AuthNtlmHash->NtlmHash, 16);
|
|
else if (AuthNtlmHash->Version == 2)
|
|
CopyMemory(context->NtlmV2Hash, AuthNtlmHash->NtlmHash, 16);
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
else if (ulAttribute == SECPKG_ATTR_AUTH_NTLM_MESSAGE)
|
|
{
|
|
SecPkgContext_AuthNtlmMessage* AuthNtlmMessage = (SecPkgContext_AuthNtlmMessage*) pBuffer;
|
|
|
|
if (cbBuffer < sizeof(SecPkgContext_AuthNtlmMessage))
|
|
return SEC_E_INVALID_PARAMETER;
|
|
|
|
if (AuthNtlmMessage->type == 1)
|
|
{
|
|
sspi_SecBufferFree(&context->NegotiateMessage);
|
|
sspi_SecBufferAlloc(&context->NegotiateMessage, AuthNtlmMessage->length);
|
|
CopyMemory(context->NegotiateMessage.pvBuffer, AuthNtlmMessage->buffer, AuthNtlmMessage->length);
|
|
}
|
|
else if (AuthNtlmMessage->type == 2)
|
|
{
|
|
sspi_SecBufferFree(&context->ChallengeMessage);
|
|
sspi_SecBufferAlloc(&context->ChallengeMessage, AuthNtlmMessage->length);
|
|
CopyMemory(context->ChallengeMessage.pvBuffer, AuthNtlmMessage->buffer, AuthNtlmMessage->length);
|
|
}
|
|
else if (AuthNtlmMessage->type == 3)
|
|
{
|
|
sspi_SecBufferFree(&context->AuthenticateMessage);
|
|
sspi_SecBufferAlloc(&context->AuthenticateMessage, AuthNtlmMessage->length);
|
|
CopyMemory(context->AuthenticateMessage.pvBuffer, AuthNtlmMessage->buffer, AuthNtlmMessage->length);
|
|
}
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
else if (ulAttribute == SECPKG_ATTR_AUTH_NTLM_TIMESTAMP)
|
|
{
|
|
SecPkgContext_AuthNtlmTimestamp* AuthNtlmTimestamp = (SecPkgContext_AuthNtlmTimestamp*) pBuffer;
|
|
|
|
if (cbBuffer < sizeof(SecPkgContext_AuthNtlmTimestamp))
|
|
return SEC_E_INVALID_PARAMETER;
|
|
|
|
if (AuthNtlmTimestamp->ChallengeOrResponse)
|
|
CopyMemory(context->ChallengeTimestamp, AuthNtlmTimestamp->Timestamp, 8);
|
|
else
|
|
CopyMemory(context->Timestamp, AuthNtlmTimestamp->Timestamp, 8);
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
else if (ulAttribute == SECPKG_ATTR_AUTH_NTLM_CLIENT_CHALLENGE)
|
|
{
|
|
SecPkgContext_AuthNtlmClientChallenge* AuthNtlmClientChallenge = (SecPkgContext_AuthNtlmClientChallenge*) pBuffer;
|
|
|
|
if (cbBuffer < sizeof(SecPkgContext_AuthNtlmClientChallenge))
|
|
return SEC_E_INVALID_PARAMETER;
|
|
|
|
CopyMemory(context->ClientChallenge, AuthNtlmClientChallenge->ClientChallenge, 8);
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
else if (ulAttribute == SECPKG_ATTR_AUTH_NTLM_SERVER_CHALLENGE)
|
|
{
|
|
SecPkgContext_AuthNtlmServerChallenge* AuthNtlmServerChallenge = (SecPkgContext_AuthNtlmServerChallenge*) pBuffer;
|
|
|
|
if (cbBuffer < sizeof(SecPkgContext_AuthNtlmServerChallenge))
|
|
return SEC_E_INVALID_PARAMETER;
|
|
|
|
CopyMemory(context->ServerChallenge, AuthNtlmServerChallenge->ServerChallenge, 8);
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
return SEC_E_UNSUPPORTED_FUNCTION;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_SetContextAttributesA(PCtxtHandle phContext, ULONG ulAttribute, void* pBuffer, ULONG cbBuffer)
|
|
{
|
|
return ntlm_SetContextAttributesW(phContext, ulAttribute, pBuffer, cbBuffer);
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
|
|
{
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
|
|
{
|
|
int index;
|
|
int length;
|
|
void* data;
|
|
UINT32 SeqNo;
|
|
HMAC_CTX hmac;
|
|
BYTE digest[16];
|
|
BYTE checksum[8];
|
|
BYTE* signature;
|
|
ULONG version = 1;
|
|
NTLM_CONTEXT* context;
|
|
PSecBuffer data_buffer = NULL;
|
|
PSecBuffer signature_buffer = NULL;
|
|
|
|
SeqNo = MessageSeqNo;
|
|
context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
|
|
|
|
for (index = 0; index < (int) pMessage->cBuffers; index++)
|
|
{
|
|
if (pMessage->pBuffers[index].BufferType == SECBUFFER_DATA)
|
|
data_buffer = &pMessage->pBuffers[index];
|
|
else if (pMessage->pBuffers[index].BufferType == SECBUFFER_TOKEN)
|
|
signature_buffer = &pMessage->pBuffers[index];
|
|
}
|
|
|
|
if (!data_buffer)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
if (!signature_buffer)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
/* Copy original data buffer */
|
|
length = data_buffer->cbBuffer;
|
|
data = malloc(length);
|
|
|
|
if (!data)
|
|
return SEC_E_INSUFFICIENT_MEMORY;
|
|
|
|
CopyMemory(data, data_buffer->pvBuffer, length);
|
|
|
|
/* Compute the HMAC-MD5 hash of ConcatenationOf(seq_num,data) using the client signing key */
|
|
HMAC_CTX_init(&hmac);
|
|
HMAC_Init_ex(&hmac, context->SendSigningKey, 16, EVP_md5(), NULL);
|
|
HMAC_Update(&hmac, (void*) &(SeqNo), 4);
|
|
HMAC_Update(&hmac, (void*) data, length);
|
|
HMAC_Final(&hmac, digest, NULL);
|
|
HMAC_CTX_cleanup(&hmac);
|
|
|
|
/* Encrypt message using with RC4, result overwrites original buffer */
|
|
|
|
if (context->confidentiality)
|
|
RC4(&context->SendRc4Seal, length, (BYTE*) data, (BYTE*) data_buffer->pvBuffer);
|
|
else
|
|
CopyMemory(data_buffer->pvBuffer, data, length);
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
fprintf(stderr, "Data Buffer (length = %d)\n", length);
|
|
winpr_HexDump(data, length);
|
|
fprintf(stderr, "\n");
|
|
|
|
fprintf(stderr, "Encrypted Data Buffer (length = %d)\n", (int) data_buffer->cbBuffer);
|
|
winpr_HexDump(data_buffer->pvBuffer, data_buffer->cbBuffer);
|
|
fprintf(stderr, "\n");
|
|
#endif
|
|
|
|
free(data);
|
|
|
|
/* RC4-encrypt first 8 bytes of digest */
|
|
RC4(&context->SendRc4Seal, 8, digest, checksum);
|
|
|
|
signature = (BYTE*) signature_buffer->pvBuffer;
|
|
|
|
/* Concatenate version, ciphertext and sequence number to build signature */
|
|
CopyMemory(signature, (void*) &version, 4);
|
|
CopyMemory(&signature[4], (void*) checksum, 8);
|
|
CopyMemory(&signature[12], (void*) &(SeqNo), 4);
|
|
context->SendSeqNum++;
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
fprintf(stderr, "Signature (length = %d)\n", (int) signature_buffer->cbBuffer);
|
|
winpr_HexDump(signature_buffer->pvBuffer, signature_buffer->cbBuffer);
|
|
fprintf(stderr, "\n");
|
|
#endif
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext, PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
|
|
{
|
|
int index;
|
|
int length;
|
|
void* data;
|
|
UINT32 SeqNo;
|
|
HMAC_CTX hmac;
|
|
BYTE digest[16];
|
|
BYTE checksum[8];
|
|
UINT32 version = 1;
|
|
NTLM_CONTEXT* context;
|
|
BYTE expected_signature[16];
|
|
PSecBuffer data_buffer = NULL;
|
|
PSecBuffer signature_buffer = NULL;
|
|
|
|
SeqNo = (UINT32) MessageSeqNo;
|
|
context = (NTLM_CONTEXT*) sspi_SecureHandleGetLowerPointer(phContext);
|
|
|
|
for (index = 0; index < (int) pMessage->cBuffers; index++)
|
|
{
|
|
if (pMessage->pBuffers[index].BufferType == SECBUFFER_DATA)
|
|
data_buffer = &pMessage->pBuffers[index];
|
|
else if (pMessage->pBuffers[index].BufferType == SECBUFFER_TOKEN)
|
|
signature_buffer = &pMessage->pBuffers[index];
|
|
}
|
|
|
|
if (!data_buffer)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
if (!signature_buffer)
|
|
return SEC_E_INVALID_TOKEN;
|
|
|
|
/* Copy original data buffer */
|
|
length = data_buffer->cbBuffer;
|
|
data = malloc(length);
|
|
|
|
if (!data)
|
|
return SEC_E_INSUFFICIENT_MEMORY;
|
|
|
|
CopyMemory(data, data_buffer->pvBuffer, length);
|
|
|
|
/* Decrypt message using with RC4, result overwrites original buffer */
|
|
|
|
if (context->confidentiality)
|
|
RC4(&context->RecvRc4Seal, length, (BYTE*) data, (BYTE*) data_buffer->pvBuffer);
|
|
else
|
|
CopyMemory(data_buffer->pvBuffer, data, length);
|
|
|
|
/* Compute the HMAC-MD5 hash of ConcatenationOf(seq_num,data) using the client signing key */
|
|
HMAC_CTX_init(&hmac);
|
|
HMAC_Init_ex(&hmac, context->RecvSigningKey, 16, EVP_md5(), NULL);
|
|
HMAC_Update(&hmac, (void*) &(SeqNo), 4);
|
|
HMAC_Update(&hmac, (void*) data_buffer->pvBuffer, data_buffer->cbBuffer);
|
|
HMAC_Final(&hmac, digest, NULL);
|
|
HMAC_CTX_cleanup(&hmac);
|
|
|
|
#ifdef WITH_DEBUG_NTLM
|
|
fprintf(stderr, "Encrypted Data Buffer (length = %d)\n", length);
|
|
winpr_HexDump(data, length);
|
|
fprintf(stderr, "\n");
|
|
|
|
fprintf(stderr, "Data Buffer (length = %d)\n", (int) data_buffer->cbBuffer);
|
|
winpr_HexDump(data_buffer->pvBuffer, data_buffer->cbBuffer);
|
|
fprintf(stderr, "\n");
|
|
#endif
|
|
|
|
free(data);
|
|
|
|
/* RC4-encrypt first 8 bytes of digest */
|
|
RC4(&context->RecvRc4Seal, 8, digest, checksum);
|
|
|
|
/* Concatenate version, ciphertext and sequence number to build signature */
|
|
CopyMemory(expected_signature, (void*) &version, 4);
|
|
CopyMemory(&expected_signature[4], (void*) checksum, 8);
|
|
CopyMemory(&expected_signature[12], (void*) &(SeqNo), 4);
|
|
context->RecvSeqNum++;
|
|
|
|
if (memcmp(signature_buffer->pvBuffer, expected_signature, 16) != 0)
|
|
{
|
|
/* signature verification failed! */
|
|
fprintf(stderr, "signature verification failed, something nasty is going on!\n");
|
|
|
|
fprintf(stderr, "Expected Signature:\n");
|
|
winpr_HexDump(expected_signature, 16);
|
|
fprintf(stderr, "Actual Signature:\n");
|
|
winpr_HexDump((BYTE*) signature_buffer->pvBuffer, 16);
|
|
|
|
return SEC_E_MESSAGE_ALTERED;
|
|
}
|
|
|
|
return SEC_E_OK;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
|
|
{
|
|
return SEC_E_UNSUPPORTED_FUNCTION;
|
|
}
|
|
|
|
SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext, PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
|
|
{
|
|
return SEC_E_UNSUPPORTED_FUNCTION;
|
|
}
|
|
|
|
const SecurityFunctionTableA NTLM_SecurityFunctionTableA =
|
|
{
|
|
1, /* dwVersion */
|
|
NULL, /* EnumerateSecurityPackages */
|
|
ntlm_QueryCredentialsAttributesA, /* QueryCredentialsAttributes */
|
|
ntlm_AcquireCredentialsHandleA, /* AcquireCredentialsHandle */
|
|
ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
|
|
NULL, /* Reserved2 */
|
|
ntlm_InitializeSecurityContextA, /* InitializeSecurityContext */
|
|
ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
|
|
ntlm_CompleteAuthToken, /* CompleteAuthToken */
|
|
ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
|
|
NULL, /* ApplyControlToken */
|
|
ntlm_QueryContextAttributesA, /* QueryContextAttributes */
|
|
ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
|
|
ntlm_RevertSecurityContext, /* RevertSecurityContext */
|
|
ntlm_MakeSignature, /* MakeSignature */
|
|
ntlm_VerifySignature, /* VerifySignature */
|
|
NULL, /* FreeContextBuffer */
|
|
NULL, /* QuerySecurityPackageInfo */
|
|
NULL, /* Reserved3 */
|
|
NULL, /* Reserved4 */
|
|
NULL, /* ExportSecurityContext */
|
|
NULL, /* ImportSecurityContext */
|
|
NULL, /* AddCredentials */
|
|
NULL, /* Reserved8 */
|
|
NULL, /* QuerySecurityContextToken */
|
|
ntlm_EncryptMessage, /* EncryptMessage */
|
|
ntlm_DecryptMessage, /* DecryptMessage */
|
|
ntlm_SetContextAttributesA, /* SetContextAttributes */
|
|
};
|
|
|
|
const SecurityFunctionTableW NTLM_SecurityFunctionTableW =
|
|
{
|
|
1, /* dwVersion */
|
|
NULL, /* EnumerateSecurityPackages */
|
|
ntlm_QueryCredentialsAttributesW, /* QueryCredentialsAttributes */
|
|
ntlm_AcquireCredentialsHandleW, /* AcquireCredentialsHandle */
|
|
ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
|
|
NULL, /* Reserved2 */
|
|
ntlm_InitializeSecurityContextW, /* InitializeSecurityContext */
|
|
ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
|
|
ntlm_CompleteAuthToken, /* CompleteAuthToken */
|
|
ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
|
|
NULL, /* ApplyControlToken */
|
|
ntlm_QueryContextAttributesW, /* QueryContextAttributes */
|
|
ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
|
|
ntlm_RevertSecurityContext, /* RevertSecurityContext */
|
|
ntlm_MakeSignature, /* MakeSignature */
|
|
ntlm_VerifySignature, /* VerifySignature */
|
|
NULL, /* FreeContextBuffer */
|
|
NULL, /* QuerySecurityPackageInfo */
|
|
NULL, /* Reserved3 */
|
|
NULL, /* Reserved4 */
|
|
NULL, /* ExportSecurityContext */
|
|
NULL, /* ImportSecurityContext */
|
|
NULL, /* AddCredentials */
|
|
NULL, /* Reserved8 */
|
|
NULL, /* QuerySecurityContextToken */
|
|
ntlm_EncryptMessage, /* EncryptMessage */
|
|
ntlm_DecryptMessage, /* DecryptMessage */
|
|
ntlm_SetContextAttributesA, /* SetContextAttributes */
|
|
};
|
|
|
|
const SecPkgInfoA NTLM_SecPkgInfoA =
|
|
{
|
|
0x00082B37, /* fCapabilities */
|
|
1, /* wVersion */
|
|
0x000A, /* wRPCID */
|
|
0x00000B48, /* cbMaxToken */
|
|
"NTLM", /* Name */
|
|
"NTLM Security Package" /* Comment */
|
|
};
|
|
|
|
WCHAR NTLM_SecPkgInfoW_Name[] = { 'N','T','L','M','\0' };
|
|
|
|
WCHAR NTLM_SecPkgInfoW_Comment[] =
|
|
{
|
|
'N','T','L','M',' ',
|
|
'S','e','c','u','r','i','t','y',' ',
|
|
'P','a','c','k','a','g','e','\0'
|
|
};
|
|
|
|
const SecPkgInfoW NTLM_SecPkgInfoW =
|
|
{
|
|
0x00082B37, /* fCapabilities */
|
|
1, /* wVersion */
|
|
0x000A, /* wRPCID */
|
|
0x00000B48, /* cbMaxToken */
|
|
NTLM_SecPkgInfoW_Name, /* Name */
|
|
NTLM_SecPkgInfoW_Comment /* Comment */
|
|
};
|