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Sweden-Number/dlls/secur32/ntlm.c

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/*
* Copyright 2005, 2006 Kai Blin
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* This file implements the NTLM security provider.
*/
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "rpc.h"
#include "sspi.h"
#include "lm.h"
#include "secur32_priv.h"
#include "hmac_md5.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
#define NTLM_MAX_BUF 1904
#define MIN_NTLM_AUTH_MAJOR_VERSION 3
#define MIN_NTLM_AUTH_MINOR_VERSION 0
#define MIN_NTLM_AUTH_MICRO_VERSION 25
static CHAR ntlm_auth[] = "ntlm_auth";
typedef struct _NtlmCredentials
{
HelperMode mode;
/* these are all in the Unix codepage */
char *username_arg;
char *domain_arg;
char *password; /* not nul-terminated */
int pwlen;
} NtlmCredentials, *PNtlmCredentials;
/***********************************************************************
* QueryCredentialsAttributesA
*/
static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
{
SECURITY_STATUS ret;
TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
if(ulAttribute == SECPKG_ATTR_NAMES)
{
FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
ret = SEC_E_UNSUPPORTED_FUNCTION;
}
else
ret = SEC_E_UNSUPPORTED_FUNCTION;
return ret;
}
/***********************************************************************
* QueryCredentialsAttributesW
*/
static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
{
SECURITY_STATUS ret;
TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
if(ulAttribute == SECPKG_ATTR_NAMES)
{
FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
ret = SEC_E_UNSUPPORTED_FUNCTION;
}
else
ret = SEC_E_UNSUPPORTED_FUNCTION;
return ret;
}
/***********************************************************************
* AcquireCredentialsHandleW
*/
static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
{
SECURITY_STATUS ret;
PNtlmCredentials ntlm_cred = NULL;
SEC_WCHAR *username = NULL, *domain = NULL;
TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
switch(fCredentialUse)
{
case SECPKG_CRED_INBOUND:
ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
if (!ntlm_cred)
ret = SEC_E_INSUFFICIENT_MEMORY;
else
{
ntlm_cred->mode = NTLM_SERVER;
ntlm_cred->username_arg = NULL;
ntlm_cred->domain_arg = NULL;
ntlm_cred->password = NULL;
ntlm_cred->pwlen = 0;
phCredential->dwUpper = fCredentialUse;
phCredential->dwLower = (ULONG_PTR)ntlm_cred;
ret = SEC_E_OK;
}
break;
case SECPKG_CRED_OUTBOUND:
{
static const char username_arg[] = "--username=";
static const char domain_arg[] = "--domain=";
int unixcp_size;
if(pAuthData == NULL)
{
LPWKSTA_USER_INFO_1 ui = NULL;
NET_API_STATUS status;
status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
if (status != NERR_Success || ui == NULL)
{
ret = SEC_E_NO_CREDENTIALS;
phCredential = NULL;
break;
}
username = HeapAlloc(GetProcessHeap(), 0,
(lstrlenW(ui->wkui1_username)+1) *
sizeof(SEC_WCHAR));
lstrcpyW(username, ui->wkui1_username);
/* same for the domain */
domain = HeapAlloc(GetProcessHeap(), 0,
(lstrlenW(ui->wkui1_logon_domain)+1) *
sizeof(SEC_WCHAR));
lstrcpyW(domain, ui->wkui1_logon_domain);
NetApiBufferFree(ui);
}
else
{
PSEC_WINNT_AUTH_IDENTITY_W auth_data =
(PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
/* Get username and domain from pAuthData */
username = HeapAlloc(GetProcessHeap(), 0,
(auth_data->UserLength + 1) * sizeof(SEC_WCHAR));
memcpy(username, auth_data->User,
auth_data->UserLength * sizeof(SEC_WCHAR));
username[auth_data->UserLength] = '\0';
domain = HeapAlloc(GetProcessHeap(), 0,
(auth_data->DomainLength + 1) * sizeof(SEC_WCHAR));
memcpy(domain, auth_data->Domain,
auth_data->DomainLength * sizeof(SEC_WCHAR));
domain[auth_data->DomainLength] = '\0';
}
ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
if (!ntlm_cred)
{
ret = SEC_E_INSUFFICIENT_MEMORY;
break;
}
ntlm_cred->mode = NTLM_CLIENT;
ntlm_cred->password = NULL;
ntlm_cred->pwlen = 0;
TRACE("Username is %s\n", debugstr_w(username));
unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
username, -1, NULL, 0, NULL, NULL) + sizeof(username_arg);
ntlm_cred->username_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
memcpy(ntlm_cred->username_arg, username_arg, sizeof(username_arg) - 1);
WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, username, -1,
ntlm_cred->username_arg + sizeof(username_arg) - 1,
unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
TRACE("Domain name is %s\n", debugstr_w(domain));
unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
domain, -1, NULL, 0, NULL, NULL) + sizeof(domain_arg);
ntlm_cred->domain_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
memcpy(ntlm_cred->domain_arg, domain_arg, sizeof(domain_arg) - 1);
WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domain,
-1, ntlm_cred->domain_arg + sizeof(domain_arg) - 1,
unixcp_size - sizeof(domain) + 1, NULL, NULL);
if(pAuthData != NULL)
{
PSEC_WINNT_AUTH_IDENTITY_W auth_data =
(PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
if(auth_data->PasswordLength != 0)
{
ntlm_cred->pwlen = WideCharToMultiByte(CP_UNIXCP,
WC_NO_BEST_FIT_CHARS, auth_data->Password,
auth_data->PasswordLength, NULL, 0, NULL,
NULL);
ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
ntlm_cred->pwlen);
WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
auth_data->Password, auth_data->PasswordLength,
ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
}
}
phCredential->dwUpper = fCredentialUse;
phCredential->dwLower = (ULONG_PTR)ntlm_cred;
TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
phCredential->dwUpper, phCredential->dwLower);
ret = SEC_E_OK;
break;
}
case SECPKG_CRED_BOTH:
FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
ret = SEC_E_UNSUPPORTED_FUNCTION;
phCredential = NULL;
break;
default:
phCredential = NULL;
ret = SEC_E_UNKNOWN_CREDENTIALS;
}
HeapFree(GetProcessHeap(), 0, username);
HeapFree(GetProcessHeap(), 0, domain);
return ret;
}
/***********************************************************************
* AcquireCredentialsHandleA
*/
static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
{
SECURITY_STATUS ret;
int user_sizeW, domain_sizeW, passwd_sizeW;
SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
PSEC_WINNT_AUTH_IDENTITY_A identity = NULL;
TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
if(pszPackage != NULL)
{
int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
NULL, 0);
package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
}
if(pAuthData != NULL)
{
identity = (PSEC_WINNT_AUTH_IDENTITY_A)pAuthData;
if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
{
pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
sizeof(SEC_WINNT_AUTH_IDENTITY_W));
if(identity->UserLength != 0)
{
user_sizeW = MultiByteToWideChar(CP_ACP, 0,
(LPCSTR)identity->User, identity->UserLength, NULL, 0);
user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
identity->UserLength, user, user_sizeW);
}
else
{
user_sizeW = 0;
}
if(identity->DomainLength != 0)
{
domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
(LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
* sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
identity->DomainLength, domain, domain_sizeW);
}
else
{
domain_sizeW = 0;
}
if(identity->PasswordLength != 0)
{
passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
(LPCSTR)identity->Password, identity->PasswordLength,
NULL, 0);
passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
* sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
identity->PasswordLength, passwd, passwd_sizeW);
}
else
{
passwd_sizeW = 0;
}
pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
pAuthDataW->User = user;
pAuthDataW->UserLength = user_sizeW;
pAuthDataW->Domain = domain;
pAuthDataW->DomainLength = domain_sizeW;
pAuthDataW->Password = passwd;
pAuthDataW->PasswordLength = passwd_sizeW;
}
else
{
pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
}
}
ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
ptsExpiry);
HeapFree(GetProcessHeap(), 0, package);
HeapFree(GetProcessHeap(), 0, user);
HeapFree(GetProcessHeap(), 0, domain);
HeapFree(GetProcessHeap(), 0, passwd);
if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
HeapFree(GetProcessHeap(), 0, pAuthDataW);
return ret;
}
/*************************************************************************
* ntlm_GetTokenBufferIndex
* Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
* Returns index if found or -1 if not found.
*/
static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
{
UINT i;
TRACE("%p\n", pMessage);
for( i = 0; i < pMessage->cBuffers; ++i )
{
if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
return i;
}
return -1;
}
/*************************************************************************
* ntlm_GetDataBufferIndex
* Calculates the index of the first secbuffer with BufferType == SECBUFFER_DATA
* Returns index if found or -1 if not found.
*/
static int ntlm_GetDataBufferIndex(PSecBufferDesc pMessage)
{
UINT i;
TRACE("%p\n", pMessage);
for( i = 0; i < pMessage->cBuffers; ++i )
{
if(pMessage->pBuffers[i].BufferType == SECBUFFER_DATA)
return i;
}
return -1;
}
/***********************************************************************
* InitializeSecurityContextW
*/
static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
{
SECURITY_STATUS ret;
PNtlmCredentials ntlm_cred = NULL;
PNegoHelper helper = NULL;
ULONG ctxt_attr = 0;
char* buffer, *want_flags = NULL;
PBYTE bin;
int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
int token_idx;
TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
/****************************************
* When communicating with the client, there can be the
* following reply packets:
* YR <base64 blob> should be sent to the server
* PW should be sent back to helper with
* base64 encoded password
* AF <base64 blob> client is done, blob should be
* sent to server with KK prefixed
* GF <string list> A string list of negotiated flags
* GK <base64 blob> base64 encoded session key
* BH <char reason> something broke
*/
/* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
if (pszTargetName)
{
TRACE("According to a MS whitepaper pszTargetName is ignored.\n");
}
if(TargetDataRep == SECURITY_NETWORK_DREP){
TRACE("Setting SECURITY_NETWORK_DREP\n");
}
buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
if((phContext == NULL) && (pInput == NULL))
{
static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
static CHAR credentials_argv[] = "--use-cached-creds";
SEC_CHAR *client_argv[6];
TRACE("First time in ISC()\n");
if(!phCredential)
{
ret = SEC_E_INVALID_HANDLE;
goto isc_end;
}
/* As the server side of sspi never calls this, make sure that
* the handler is a client handler.
*/
ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
if(ntlm_cred->mode != NTLM_CLIENT)
{
TRACE("Cred mode = %d\n", ntlm_cred->mode);
ret = SEC_E_INVALID_HANDLE;
goto isc_end;
}
client_argv[0] = ntlm_auth;
client_argv[1] = helper_protocol;
client_argv[2] = ntlm_cred->username_arg;
client_argv[3] = ntlm_cred->domain_arg;
client_argv[4] = credentials_argv;
client_argv[5] = NULL;
if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
goto isc_end;
helper->mode = NTLM_CLIENT;
helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
if (!helper->session_key)
{
cleanup_helper(helper);
ret = SEC_E_INSUFFICIENT_MEMORY;
goto isc_end;
}
/* Generate the dummy session key = MD4(MD4(password))*/
if(ntlm_cred->password)
{
SEC_WCHAR *unicode_password;
int passwd_lenW;
TRACE("Converting password to unicode.\n");
passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
(LPCSTR)ntlm_cred->password, ntlm_cred->pwlen,
NULL, 0);
unicode_password = HeapAlloc(GetProcessHeap(), 0,
passwd_lenW * sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, (LPCSTR)ntlm_cred->password,
ntlm_cred->pwlen, unicode_password, passwd_lenW);
SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
HeapFree(GetProcessHeap(), 0, unicode_password);
}
else
memset(helper->session_key, 0, 16);
/* Allocate space for a maximal string of
* "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
* NTLMSSP_FEATURE_SESSION_KEY"
*/
want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
if(want_flags == NULL)
{
cleanup_helper(helper);
ret = SEC_E_INSUFFICIENT_MEMORY;
goto isc_end;
}
lstrcpyA(want_flags, "SF");
if(fContextReq & ISC_REQ_CONFIDENTIALITY)
{
char *ptr;
if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SEAL")) == NULL)
lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
}
if(fContextReq & ISC_REQ_CONNECTION)
ctxt_attr |= ISC_RET_CONNECTION;
if(fContextReq & ISC_REQ_EXTENDED_ERROR)
ctxt_attr |= ISC_RET_EXTENDED_ERROR;
if(fContextReq & ISC_REQ_INTEGRITY)
{
char *ptr;
if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
}
if(fContextReq & ISC_REQ_MUTUAL_AUTH)
ctxt_attr |= ISC_RET_MUTUAL_AUTH;
if(fContextReq & ISC_REQ_REPLAY_DETECT)
{
char *ptr;
if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
}
if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
{
char *ptr;
if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
}
if(fContextReq & ISC_REQ_STREAM)
FIXME("ISC_REQ_STREAM\n");
if(fContextReq & ISC_REQ_USE_DCE_STYLE)
ctxt_attr |= ISC_RET_USED_DCE_STYLE;
if(fContextReq & ISC_REQ_DELEGATE)
ctxt_attr |= ISC_RET_DELEGATE;
/* If no password is given, try to use cached credentials. Fall back to an empty
* password if this failed. */
if(ntlm_cred->password == NULL)
{
lstrcpynA(buffer, "OK", max_len-1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
{
cleanup_helper(helper);
goto isc_end;
}
/* If the helper replied with "PW", using cached credentials failed */
if(!strncmp(buffer, "PW", 2))
{
TRACE("Using cached credentials failed. Using empty password.\n");
lstrcpynA(buffer, "PW AA==", max_len-1);
}
else /* Just do a noop on the next run */
lstrcpynA(buffer, "OK", max_len-1);
}
else
{
lstrcpynA(buffer, "PW ", max_len-1);
if((ret = encodeBase64((unsigned char*)ntlm_cred->password,
ntlm_cred->pwlen, buffer+3,
max_len-3, &buffer_len)) != SEC_E_OK)
{
cleanup_helper(helper);
goto isc_end;
}
}
TRACE("Sending to helper: %s\n", debugstr_a(buffer));
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
{
cleanup_helper(helper);
goto isc_end;
}
TRACE("Helper returned %s\n", debugstr_a(buffer));
if(lstrlenA(want_flags) > 2)
{
TRACE("Want flags are %s\n", debugstr_a(want_flags));
lstrcpynA(buffer, want_flags, max_len-1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len))
!= SEC_E_OK)
goto isc_end;
if(!strncmp(buffer, "BH", 2))
ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
}
lstrcpynA(buffer, "YR", max_len-1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
{
cleanup_helper(helper);
goto isc_end;
}
TRACE("%s\n", buffer);
if(strncmp(buffer, "YR ", 3) != 0)
{
/* Something borked */
TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
ret = SEC_E_INTERNAL_ERROR;
cleanup_helper(helper);
goto isc_end;
}
if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
max_len-1, &bin_len)) != SEC_E_OK)
{
cleanup_helper(helper);
goto isc_end;
}
/* put the decoded client blob into the out buffer */
phNewContext->dwUpper = ctxt_attr;
phNewContext->dwLower = (ULONG_PTR)helper;
ret = SEC_I_CONTINUE_NEEDED;
}
else
{
int input_token_idx;
/* handle second call here */
/* encode server data to base64 */
if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
{
ret = SEC_E_INVALID_TOKEN;
goto isc_end;
}
if(!phContext)
{
ret = SEC_E_INVALID_HANDLE;
goto isc_end;
}
/* As the server side of sspi never calls this, make sure that
* the handler is a client handler.
*/
helper = (PNegoHelper)phContext->dwLower;
if(helper->mode != NTLM_CLIENT)
{
TRACE("Helper mode = %d\n", helper->mode);
ret = SEC_E_INVALID_HANDLE;
goto isc_end;
}
if (!pInput->pBuffers[input_token_idx].pvBuffer)
{
ret = SEC_E_INTERNAL_ERROR;
goto isc_end;
}
if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
{
TRACE("pInput->pBuffers[%d].cbBuffer is: %ld\n",
input_token_idx,
pInput->pBuffers[input_token_idx].cbBuffer);
ret = SEC_E_INVALID_TOKEN;
goto isc_end;
}
else
bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
lstrcpynA(buffer, "TT ", max_len-1);
if((ret = encodeBase64(bin, bin_len, buffer+3,
max_len-3, &buffer_len)) != SEC_E_OK)
goto isc_end;
TRACE("Server sent: %s\n", debugstr_a(buffer));
/* send TT base64 blob to ntlm_auth */
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto isc_end;
TRACE("Helper replied: %s\n", debugstr_a(buffer));
if( (strncmp(buffer, "KK ", 3) != 0) &&
(strncmp(buffer, "AF ", 3) !=0))
{
TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
ret = SEC_E_INVALID_TOKEN;
goto isc_end;
}
/* decode the blob and send it to server */
if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
&bin_len)) != SEC_E_OK)
{
goto isc_end;
}
phNewContext->dwUpper = ctxt_attr;
phNewContext->dwLower = (ULONG_PTR)helper;
ret = SEC_E_OK;
}
/* put the decoded client blob into the out buffer */
if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
{
TRACE("no SECBUFFER_TOKEN buffer could be found\n");
ret = SEC_E_BUFFER_TOO_SMALL;
if ((phContext == NULL) && (pInput == NULL))
{
cleanup_helper(helper);
phNewContext->dwUpper = 0;
phNewContext->dwLower = 0;
}
goto isc_end;
}
if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
{
pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
pOutput->pBuffers[token_idx].cbBuffer = bin_len;
}
else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
{
TRACE("out buffer is NULL or has not enough space\n");
ret = SEC_E_BUFFER_TOO_SMALL;
if ((phContext == NULL) && (pInput == NULL))
{
cleanup_helper(helper);
phNewContext->dwUpper = 0;
phNewContext->dwLower = 0;
}
goto isc_end;
}
if (!pOutput->pBuffers[token_idx].pvBuffer)
{
TRACE("out buffer is NULL\n");
ret = SEC_E_INTERNAL_ERROR;
if ((phContext == NULL) && (pInput == NULL))
{
cleanup_helper(helper);
phNewContext->dwUpper = 0;
phNewContext->dwLower = 0;
}
goto isc_end;
}
pOutput->pBuffers[token_idx].cbBuffer = bin_len;
memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
if(ret == SEC_E_OK)
{
TRACE("Getting negotiated flags\n");
lstrcpynA(buffer, "GF", max_len - 1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto isc_end;
if(buffer_len < 3)
{
TRACE("No flags negotiated.\n");
helper->neg_flags = 0l;
}
else
{
TRACE("Negotiated %s\n", debugstr_a(buffer));
sscanf(buffer + 3, "%lx", &(helper->neg_flags));
TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
}
TRACE("Getting session key\n");
lstrcpynA(buffer, "GK", max_len - 1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto isc_end;
if(strncmp(buffer, "BH", 2) == 0)
TRACE("No key negotiated.\n");
else if(strncmp(buffer, "GK ", 3) == 0)
{
if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
&bin_len)) != SEC_E_OK)
{
TRACE("Failed to decode session key\n");
}
TRACE("Session key is %s\n", debugstr_a(buffer+3));
HeapFree(GetProcessHeap(), 0, helper->session_key);
helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
if(!helper->session_key)
{
TRACE("Failed to allocate memory for session key\n");
ret = SEC_E_INTERNAL_ERROR;
goto isc_end;
}
memcpy(helper->session_key, bin, bin_len);
}
helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
helper->crypt.ntlm.seq_num = 0l;
SECUR32_CreateNTLMv2SubKeys(helper);
helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
helper->crypt.ntlm2.send_seal_key, 16);
SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
helper->crypt.ntlm2.recv_seal_key, 16);
helper->crypt.ntlm2.send_seq_no = 0l;
helper->crypt.ntlm2.recv_seq_no = 0l;
}
isc_end:
HeapFree(GetProcessHeap(), 0, want_flags);
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
/***********************************************************************
* InitializeSecurityContextA
*/
static 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, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
{
SECURITY_STATUS ret;
SEC_WCHAR *target = NULL;
TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
if(pszTargetName != NULL)
{
int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
strlen(pszTargetName)+1, NULL, 0);
target = HeapAlloc(GetProcessHeap(), 0, target_size *
sizeof(SEC_WCHAR));
MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
target, target_size);
}
ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
phNewContext, pOutput, pfContextAttr, ptsExpiry);
HeapFree(GetProcessHeap(), 0, target);
return ret;
}
/***********************************************************************
* AcceptSecurityContext
*/
static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
{
SECURITY_STATUS ret;
char *buffer, *want_flags = NULL;
PBYTE bin;
int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
ULONG ctxt_attr = 0;
PNegoHelper helper;
PNtlmCredentials ntlm_cred;
TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
ptsExpiry);
buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
bin = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
if(TargetDataRep == SECURITY_NETWORK_DREP){
TRACE("Using SECURITY_NETWORK_DREP\n");
}
if(phContext == NULL)
{
static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
SEC_CHAR *server_argv[] = { ntlm_auth,
server_helper_protocol,
NULL };
if (!phCredential)
{
ret = SEC_E_INVALID_HANDLE;
goto asc_end;
}
ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
if(ntlm_cred->mode != NTLM_SERVER)
{
ret = SEC_E_INVALID_HANDLE;
goto asc_end;
}
/* This is the first call to AcceptSecurityHandle */
if(pInput == NULL)
{
ret = SEC_E_INCOMPLETE_MESSAGE;
goto asc_end;
}
if(pInput->cBuffers < 1)
{
ret = SEC_E_INCOMPLETE_MESSAGE;
goto asc_end;
}
if(pInput->pBuffers[0].cbBuffer > max_len)
{
ret = SEC_E_INVALID_TOKEN;
goto asc_end;
}
else
bin_len = pInput->pBuffers[0].cbBuffer;
if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
SEC_E_OK)
{
ret = SEC_E_INTERNAL_ERROR;
goto asc_end;
}
helper->mode = NTLM_SERVER;
/* Handle all the flags */
want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
if(want_flags == NULL)
{
TRACE("Failed to allocate memory for the want_flags!\n");
ret = SEC_E_INSUFFICIENT_MEMORY;
cleanup_helper(helper);
goto asc_end;
}
lstrcpyA(want_flags, "SF");
if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
{
FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
}
if(fContextReq & ASC_REQ_CONFIDENTIALITY)
{
lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
}
if(fContextReq & ASC_REQ_CONNECTION)
{
/* This is default, so we'll enable it */
lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
ctxt_attr |= ASC_RET_CONNECTION;
}
if(fContextReq & ASC_REQ_EXTENDED_ERROR)
{
FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
}
if(fContextReq & ASC_REQ_INTEGRITY)
{
lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
}
if(fContextReq & ASC_REQ_MUTUAL_AUTH)
{
FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
}
if(fContextReq & ASC_REQ_REPLAY_DETECT)
{
FIXME("ASC_REQ_REPLAY_DETECT stub\n");
}
if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
{
FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
}
if(fContextReq & ISC_REQ_STREAM)
{
FIXME("ASC_REQ_STREAM stub\n");
}
/* Done with the flags */
if(lstrlenA(want_flags) > 3)
{
TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
lstrcpynA(buffer, want_flags, max_len - 1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
SEC_E_OK)
{
cleanup_helper(helper);
goto asc_end;
}
if(!strncmp(buffer, "BH", 2))
TRACE("Helper doesn't understand new command set\n");
}
/* This is the YR request from the client, encode to base64 */
memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
lstrcpynA(buffer, "YR ", max_len-1);
if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
&buffer_len)) != SEC_E_OK)
{
cleanup_helper(helper);
goto asc_end;
}
TRACE("Client sent: %s\n", debugstr_a(buffer));
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
SEC_E_OK)
{
cleanup_helper(helper);
goto asc_end;
}
TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
/* The expected answer is TT <base64 blob> */
if(strncmp(buffer, "TT ", 3) != 0)
{
ret = SEC_E_INTERNAL_ERROR;
cleanup_helper(helper);
goto asc_end;
}
if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
&bin_len)) != SEC_E_OK)
{
cleanup_helper(helper);
goto asc_end;
}
/* send this to the client */
if(pOutput == NULL)
{
ret = SEC_E_INSUFFICIENT_MEMORY;
cleanup_helper(helper);
goto asc_end;
}
if(pOutput->cBuffers < 1)
{
ret = SEC_E_INSUFFICIENT_MEMORY;
cleanup_helper(helper);
goto asc_end;
}
pOutput->pBuffers[0].cbBuffer = bin_len;
pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
ret = SEC_I_CONTINUE_NEEDED;
}
else
{
/* we expect a KK request from client */
if(pInput == NULL)
{
ret = SEC_E_INCOMPLETE_MESSAGE;
goto asc_end;
}
if(pInput->cBuffers < 1)
{
ret = SEC_E_INCOMPLETE_MESSAGE;
goto asc_end;
}
if(!phContext)
{
ret = SEC_E_INVALID_HANDLE;
goto asc_end;
}
helper = (PNegoHelper)phContext->dwLower;
if(helper->mode != NTLM_SERVER)
{
ret = SEC_E_INVALID_HANDLE;
goto asc_end;
}
if(pInput->pBuffers[0].cbBuffer > max_len)
{
ret = SEC_E_INVALID_TOKEN;
goto asc_end;
}
else
bin_len = pInput->pBuffers[0].cbBuffer;
memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
lstrcpynA(buffer, "KK ", max_len-1);
if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
&buffer_len)) != SEC_E_OK)
{
goto asc_end;
}
TRACE("Client sent: %s\n", debugstr_a(buffer));
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
SEC_E_OK)
{
goto asc_end;
}
TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
/* At this point, we get a NA if the user didn't authenticate, but a BH
* if ntlm_auth could not connect to winbindd. Apart from running Wine
* as root, there is no way to fix this for now, so just handle this as
* a failed login. */
if(strncmp(buffer, "AF ", 3) != 0)
{
if(strncmp(buffer, "NA ", 3) == 0)
{
ret = SEC_E_LOGON_DENIED;
goto asc_end;
}
else
{
size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
if( (buffer_len >= ntlm_pipe_err_len) &&
(strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
ntlm_pipe_err_len) == 0))
{
TRACE("Connection to winbindd failed\n");
ret = SEC_E_LOGON_DENIED;
}
else
ret = SEC_E_INTERNAL_ERROR;
goto asc_end;
}
}
pOutput->pBuffers[0].cbBuffer = 0;
ret = SEC_E_OK;
TRACE("Getting negotiated flags\n");
lstrcpynA(buffer, "GF", max_len - 1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto asc_end;
if(buffer_len < 3)
{
TRACE("No flags negotiated, or helper does not support GF command\n");
}
else
{
TRACE("Negotiated %s\n", debugstr_a(buffer));
sscanf(buffer + 3, "%lx", &(helper->neg_flags));
TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
}
TRACE("Getting session key\n");
lstrcpynA(buffer, "GK", max_len - 1);
if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
goto asc_end;
if(buffer_len < 3)
TRACE("Helper does not support GK command\n");
else
{
if(strncmp(buffer, "BH ", 3) == 0)
{
TRACE("Helper sent %s\n", debugstr_a(buffer+3));
helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
/*FIXME: Generate the dummy session key = MD4(MD4(password))*/
memset(helper->session_key, 0 , 16);
}
else if(strncmp(buffer, "GK ", 3) == 0)
{
if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
&bin_len)) != SEC_E_OK)
{
TRACE("Failed to decode session key\n");
}
TRACE("Session key is %s\n", debugstr_a(buffer+3));
helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
if(!helper->session_key)
{
TRACE("Failed to allocate memory for session key\n");
ret = SEC_E_INTERNAL_ERROR;
goto asc_end;
}
memcpy(helper->session_key, bin, 16);
}
}
helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
helper->crypt.ntlm.seq_num = 0l;
}
phNewContext->dwUpper = ctxt_attr;
phNewContext->dwLower = (ULONG_PTR)helper;
asc_end:
HeapFree(GetProcessHeap(), 0, want_flags);
HeapFree(GetProcessHeap(), 0, buffer);
HeapFree(GetProcessHeap(), 0, bin);
return ret;
}
/***********************************************************************
* CompleteAuthToken
*/
static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
PSecBufferDesc pToken)
{
/* We never need to call CompleteAuthToken anyway */
TRACE("%p %p\n", phContext, pToken);
if (!phContext)
return SEC_E_INVALID_HANDLE;
return SEC_E_OK;
}
/***********************************************************************
* DeleteSecurityContext
*/
static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
{
PNegoHelper helper;
TRACE("%p\n", phContext);
if (!phContext)
return SEC_E_INVALID_HANDLE;
helper = (PNegoHelper)phContext->dwLower;
phContext->dwUpper = 0;
phContext->dwLower = 0;
SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
HeapFree(GetProcessHeap(), 0, helper->session_key);
SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
cleanup_helper(helper);
return SEC_E_OK;
}
/***********************************************************************
* QueryContextAttributesW
*/
static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
ULONG ulAttribute, void *pBuffer)
{
TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
if (!phContext)
return SEC_E_INVALID_HANDLE;
switch(ulAttribute)
{
#define _x(x) case (x) : FIXME(#x" stub\n"); break
_x(SECPKG_ATTR_ACCESS_TOKEN);
_x(SECPKG_ATTR_AUTHORITY);
_x(SECPKG_ATTR_DCE_INFO);
case SECPKG_ATTR_FLAGS:
{
PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
PNegoHelper helper = (PNegoHelper)phContext->dwLower;
spcf->Flags = 0;
if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
spcf->Flags |= ISC_RET_INTEGRITY;
if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
spcf->Flags |= ISC_RET_CONFIDENTIALITY;
return SEC_E_OK;
}
_x(SECPKG_ATTR_KEY_INFO);
_x(SECPKG_ATTR_LIFESPAN);
_x(SECPKG_ATTR_NAMES);
_x(SECPKG_ATTR_NATIVE_NAMES);
_x(SECPKG_ATTR_NEGOTIATION_INFO);
_x(SECPKG_ATTR_PACKAGE_INFO);
_x(SECPKG_ATTR_PASSWORD_EXPIRY);
_x(SECPKG_ATTR_SESSION_KEY);
case SECPKG_ATTR_SIZES:
{
PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
spcs->cbMaxToken = NTLM_MAX_BUF;
spcs->cbMaxSignature = 16;
spcs->cbBlockSize = 0;
spcs->cbSecurityTrailer = 16;
return SEC_E_OK;
}
_x(SECPKG_ATTR_STREAM_SIZES);
_x(SECPKG_ATTR_TARGET_INFORMATION);
#undef _x
default:
TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
}
return SEC_E_UNSUPPORTED_FUNCTION;
}
/***********************************************************************
* QueryContextAttributesA
*/
static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
ULONG ulAttribute, void *pBuffer)
{
return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
}
/***********************************************************************
* ImpersonateSecurityContext
*/
static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
{
SECURITY_STATUS ret;
TRACE("%p\n", phContext);
if (phContext)
{
ret = SEC_E_UNSUPPORTED_FUNCTION;
}
else
{
ret = SEC_E_INVALID_HANDLE;
}
return ret;
}
/***********************************************************************
* RevertSecurityContext
*/
static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
{
SECURITY_STATUS ret;
TRACE("%p\n", phContext);
if (phContext)
{
ret = SEC_E_UNSUPPORTED_FUNCTION;
}
else
{
ret = SEC_E_INVALID_HANDLE;
}
return ret;
}
/***********************************************************************
* ntlm_CreateSignature
* As both MakeSignature and VerifySignature need this, but different keys
* are needed for NTLMv2, the logic goes into a helper function.
* To ensure maximal reusability, we can specify the direction as NTLM_SEND for
* signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
* the signature is encrypted after the message was encrypted, so
* CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
* false.
*/
static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
int token_idx, SignDirection direction, BOOL encrypt_sig)
{
ULONG sign_version = 1;
UINT i;
PBYTE sig;
TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
encrypt_sig);
sig = pMessage->pBuffers[token_idx].pvBuffer;
if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
{
BYTE digest[16];
BYTE seq_no[4];
HMAC_MD5_CTX hmac_md5_ctx;
TRACE("Signing NTLM2 style\n");
if(direction == NTLM_SEND)
{
seq_no[0] = (helper->crypt.ntlm2.send_seq_no >> 0) & 0xff;
seq_no[1] = (helper->crypt.ntlm2.send_seq_no >> 8) & 0xff;
seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
++(helper->crypt.ntlm2.send_seq_no);
HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
}
else
{
seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >> 0) & 0xff;
seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >> 8) & 0xff;
seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
++(helper->crypt.ntlm2.recv_seq_no);
HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
}
HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
for( i = 0; i < pMessage->cBuffers; ++i )
{
if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
HMACMD5Update(&hmac_md5_ctx, (BYTE *)pMessage->pBuffers[i].pvBuffer,
pMessage->pBuffers[i].cbBuffer);
}
HMACMD5Final(&hmac_md5_ctx, digest);
if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
{
if(direction == NTLM_SEND)
SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
else
SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
}
/* The NTLM2 signature is the sign version */
sig[ 0] = (sign_version >> 0) & 0xff;
sig[ 1] = (sign_version >> 8) & 0xff;
sig[ 2] = (sign_version >> 16) & 0xff;
sig[ 3] = (sign_version >> 24) & 0xff;
/* The first 8 bytes of the digest */
memcpy(sig+4, digest, 8);
/* And the sequence number */
memcpy(sig+12, seq_no, 4);
pMessage->pBuffers[token_idx].cbBuffer = 16;
return SEC_E_OK;
}
if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
{
ULONG crc = 0U;
TRACE("Signing NTLM1 style\n");
for(i=0; i < pMessage->cBuffers; ++i)
{
if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
{
crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
pMessage->pBuffers[i].cbBuffer, crc);
}
}
sig[ 0] = (sign_version >> 0) & 0xff;
sig[ 1] = (sign_version >> 8) & 0xff;
sig[ 2] = (sign_version >> 16) & 0xff;
sig[ 3] = (sign_version >> 24) & 0xff;
memset(sig+4, 0, 4);
sig[ 8] = (crc >> 0) & 0xff;
sig[ 9] = (crc >> 8) & 0xff;
sig[10] = (crc >> 16) & 0xff;
sig[11] = (crc >> 24) & 0xff;
sig[12] = (helper->crypt.ntlm.seq_num >> 0) & 0xff;
sig[13] = (helper->crypt.ntlm.seq_num >> 8) & 0xff;
sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
++(helper->crypt.ntlm.seq_num);
if(encrypt_sig)
SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
return SEC_E_OK;
}
if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
{
TRACE("Creating a dummy signature.\n");
/* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
pMessage->pBuffers[token_idx].cbBuffer = 16;
return SEC_E_OK;
}
return SEC_E_UNSUPPORTED_FUNCTION;
}
/***********************************************************************
* MakeSignature
*/
static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
PSecBufferDesc pMessage, ULONG MessageSeqNo)
{
PNegoHelper helper;
int token_idx;
TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
if (!phContext)
return SEC_E_INVALID_HANDLE;
if(fQOP)
FIXME("Ignoring fQOP 0x%08x\n", fQOP);
if(MessageSeqNo)
FIXME("Ignoring MessageSeqNo\n");
if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
return SEC_E_INVALID_TOKEN;
/* If we didn't find a SECBUFFER_TOKEN type buffer */
if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
return SEC_E_INVALID_TOKEN;
if(pMessage->pBuffers[token_idx].cbBuffer < 16)
return SEC_E_BUFFER_TOO_SMALL;
helper = (PNegoHelper)phContext->dwLower;
TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
}
/***********************************************************************
* VerifySignature
*/
static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
{
PNegoHelper helper;
ULONG fQOP = 0;
UINT i;
int token_idx;
SECURITY_STATUS ret;
SecBufferDesc local_desc;
PSecBuffer local_buff;
BYTE local_sig[16];
TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
if(!phContext)
return SEC_E_INVALID_HANDLE;
if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
return SEC_E_INVALID_TOKEN;
if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
return SEC_E_INVALID_TOKEN;
if(pMessage->pBuffers[token_idx].cbBuffer < 16)
return SEC_E_BUFFER_TOO_SMALL;
if(MessageSeqNo)
FIXME("Ignoring MessageSeqNo\n");
helper = (PNegoHelper)phContext->dwLower;
TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
local_desc.ulVersion = SECBUFFER_VERSION;
local_desc.cBuffers = pMessage->cBuffers;
local_desc.pBuffers = local_buff;
for(i=0; i < pMessage->cBuffers; ++i)
{
if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
{
local_buff[i].BufferType = SECBUFFER_TOKEN;
local_buff[i].cbBuffer = 16;
local_buff[i].pvBuffer = local_sig;
}
else
{
local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
}
}
if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
return ret;
if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
ret = SEC_E_MESSAGE_ALTERED;
else
ret = SEC_E_OK;
HeapFree(GetProcessHeap(), 0, local_buff);
pfQOP = &fQOP;
return ret;
}
/***********************************************************************
* FreeCredentialsHandle
*/
static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
PCredHandle phCredential)
{
SECURITY_STATUS ret;
if(phCredential){
PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
phCredential->dwUpper = 0;
phCredential->dwLower = 0;
if (ntlm_cred->password)
memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
ret = SEC_E_OK;
}
else
ret = SEC_E_OK;
return ret;
}
/***********************************************************************
* EncryptMessage
*/
static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
{
PNegoHelper helper;
int token_idx, data_idx;
TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
if(!phContext)
return SEC_E_INVALID_HANDLE;
if(fQOP)
FIXME("Ignoring fQOP\n");
if(MessageSeqNo)
FIXME("Ignoring MessageSeqNo\n");
if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
return SEC_E_INVALID_TOKEN;
if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
return SEC_E_INVALID_TOKEN;
if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
return SEC_E_INVALID_TOKEN;
if(pMessage->pBuffers[token_idx].cbBuffer < 16)
return SEC_E_BUFFER_TOO_SMALL;
helper = (PNegoHelper) phContext->dwLower;
if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
{
ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
(BYTE *)pMessage->pBuffers[data_idx].pvBuffer,
pMessage->pBuffers[data_idx].cbBuffer);
if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
return SEC_E_OK;
}
else
{
PBYTE sig;
ULONG save_flags;
/* EncryptMessage always produces real signatures, so make sure
* NTLMSSP_NEGOTIATE_SIGN is set*/
save_flags = helper->neg_flags;
helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
helper->neg_flags = save_flags;
sig = pMessage->pBuffers[token_idx].pvBuffer;
SECUR32_arc4Process(helper->crypt.ntlm.a4i,
pMessage->pBuffers[data_idx].pvBuffer,
pMessage->pBuffers[data_idx].cbBuffer);
SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
memset(sig+4, 0, 4);
}
return SEC_E_OK;
}
/***********************************************************************
* DecryptMessage
*/
static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
{
SECURITY_STATUS ret;
ULONG ntlmssp_flags_save;
PNegoHelper helper;
int token_idx, data_idx;
TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
if(!phContext)
return SEC_E_INVALID_HANDLE;
if(MessageSeqNo)
FIXME("Ignoring MessageSeqNo\n");
if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
return SEC_E_INVALID_TOKEN;
if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
return SEC_E_INVALID_TOKEN;
if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
return SEC_E_INVALID_TOKEN;
if(pMessage->pBuffers[token_idx].cbBuffer < 16)
return SEC_E_BUFFER_TOO_SMALL;
helper = (PNegoHelper) phContext->dwLower;
if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
{
SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
pMessage->pBuffers[data_idx].pvBuffer,
pMessage->pBuffers[data_idx].cbBuffer);
}
else
{
SECUR32_arc4Process(helper->crypt.ntlm.a4i,
pMessage->pBuffers[data_idx].pvBuffer,
pMessage->pBuffers[data_idx].cbBuffer);
}
/* Make sure we use a session key for the signature check, EncryptMessage
* always does that, even in the dummy case */
ntlmssp_flags_save = helper->neg_flags;
helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
helper->neg_flags = ntlmssp_flags_save;
return ret;
}
static const SecurityFunctionTableA ntlmTableA = {
1,
NULL, /* EnumerateSecurityPackagesA */
ntlm_QueryCredentialsAttributesA, /* QueryCredentialsAttributesA */
ntlm_AcquireCredentialsHandleA, /* AcquireCredentialsHandleA */
ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
NULL, /* Reserved2 */
ntlm_InitializeSecurityContextA, /* InitializeSecurityContextA */
ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
ntlm_CompleteAuthToken, /* CompleteAuthToken */
ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
NULL, /* ApplyControlToken */
ntlm_QueryContextAttributesA, /* QueryContextAttributesA */
ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
ntlm_RevertSecurityContext, /* RevertSecurityContext */
ntlm_MakeSignature, /* MakeSignature */
ntlm_VerifySignature, /* VerifySignature */
FreeContextBuffer, /* FreeContextBuffer */
NULL, /* QuerySecurityPackageInfoA */
NULL, /* Reserved3 */
NULL, /* Reserved4 */
NULL, /* ExportSecurityContext */
NULL, /* ImportSecurityContextA */
NULL, /* AddCredentialsA */
NULL, /* Reserved8 */
NULL, /* QuerySecurityContextToken */
ntlm_EncryptMessage, /* EncryptMessage */
ntlm_DecryptMessage, /* DecryptMessage */
NULL, /* SetContextAttributesA */
};
static const SecurityFunctionTableW ntlmTableW = {
1,
NULL, /* EnumerateSecurityPackagesW */
ntlm_QueryCredentialsAttributesW, /* QueryCredentialsAttributesW */
ntlm_AcquireCredentialsHandleW, /* AcquireCredentialsHandleW */
ntlm_FreeCredentialsHandle, /* FreeCredentialsHandle */
NULL, /* Reserved2 */
ntlm_InitializeSecurityContextW, /* InitializeSecurityContextW */
ntlm_AcceptSecurityContext, /* AcceptSecurityContext */
ntlm_CompleteAuthToken, /* CompleteAuthToken */
ntlm_DeleteSecurityContext, /* DeleteSecurityContext */
NULL, /* ApplyControlToken */
ntlm_QueryContextAttributesW, /* QueryContextAttributesW */
ntlm_ImpersonateSecurityContext, /* ImpersonateSecurityContext */
ntlm_RevertSecurityContext, /* RevertSecurityContext */
ntlm_MakeSignature, /* MakeSignature */
ntlm_VerifySignature, /* VerifySignature */
FreeContextBuffer, /* FreeContextBuffer */
NULL, /* QuerySecurityPackageInfoW */
NULL, /* Reserved3 */
NULL, /* Reserved4 */
NULL, /* ExportSecurityContext */
NULL, /* ImportSecurityContextW */
NULL, /* AddCredentialsW */
NULL, /* Reserved8 */
NULL, /* QuerySecurityContextToken */
ntlm_EncryptMessage, /* EncryptMessage */
ntlm_DecryptMessage, /* DecryptMessage */
NULL, /* SetContextAttributesW */
};
#define NTLM_COMMENT \
{ 'N', 'T', 'L', 'M', ' ', \
'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
static CHAR ntlm_comment_A[] = NTLM_COMMENT;
static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
#define NTLM_NAME {'N', 'T', 'L', 'M', 0}
static char ntlm_name_A[] = NTLM_NAME;
static WCHAR ntlm_name_W[] = NTLM_NAME;
/* According to Windows, NTLM has the following capabilities. */
#define CAPS ( \
SECPKG_FLAG_INTEGRITY | \
SECPKG_FLAG_PRIVACY | \
SECPKG_FLAG_TOKEN_ONLY | \
SECPKG_FLAG_CONNECTION | \
SECPKG_FLAG_MULTI_REQUIRED | \
SECPKG_FLAG_IMPERSONATION | \
SECPKG_FLAG_ACCEPT_WIN32_NAME | \
SECPKG_FLAG_READONLY_WITH_CHECKSUM)
static const SecPkgInfoW infoW = {
CAPS,
1,
RPC_C_AUTHN_WINNT,
NTLM_MAX_BUF,
ntlm_name_W,
ntlm_comment_W
};
static const SecPkgInfoA infoA = {
CAPS,
1,
RPC_C_AUTHN_WINNT,
NTLM_MAX_BUF,
ntlm_name_A,
ntlm_comment_A
};
void SECUR32_initNTLMSP(void)
{
SECURITY_STATUS ret;
PNegoHelper helper;
static CHAR version[] = "--version";
SEC_CHAR *args[] = {
ntlm_auth,
version,
NULL };
if((ret = fork_helper(&helper, ntlm_auth, args)) != SEC_E_OK)
{
/* Cheat and allocate a helper anyway, so cleanup later will work. */
helper = HeapAlloc(GetProcessHeap(),0, sizeof(PNegoHelper));
helper->major = helper->minor = helper->micro = -1;
}
else
check_version(helper);
if( (helper->major > MIN_NTLM_AUTH_MAJOR_VERSION) ||
(helper->major == MIN_NTLM_AUTH_MAJOR_VERSION &&
helper->minor > MIN_NTLM_AUTH_MINOR_VERSION) ||
(helper->major == MIN_NTLM_AUTH_MAJOR_VERSION &&
helper->minor == MIN_NTLM_AUTH_MINOR_VERSION &&
helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
{
SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
SECUR32_addPackages(provider, 1L, &infoA, &infoW);
}
else
{
ERR("%s was not found or is outdated. "
"Make sure that ntlm_auth >= %d.%d.%d is in your path.\n",
ntlm_auth,
MIN_NTLM_AUTH_MAJOR_VERSION,
MIN_NTLM_AUTH_MINOR_VERSION,
MIN_NTLM_AUTH_MICRO_VERSION);
ERR("Usually, you can find it in the winbind package of your "
"distribution.\n");
}
cleanup_helper(helper);
}
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