git.oblomov.eu Git - wine/blob - dlls/secur32/ntlm.c

   1 /*
   2  * Copyright 2005, 2006 Kai Blin
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  * This file implements the NTLM security provider.
  19  */
  20
  21 #include <assert.h>
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "winnls.h"
  27 #include "rpc.h"
  28 #include "sspi.h"
  29 #include "lm.h"
  30 #include "secur32_priv.h"
  31 #include "hmac_md5.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
  35
  36 #define NTLM_MAX_BUF 1904
  37 #define MIN_NTLM_AUTH_MAJOR_VERSION 3
  38 #define MIN_NTLM_AUTH_MINOR_VERSION 0
  39 #define MIN_NTLM_AUTH_MICRO_VERSION 25
  40
  41 static CHAR ntlm_auth[] = "ntlm_auth";
  42
  43 typedef struct _NtlmCredentials
  44 {
  45     HelperMode mode;
  46
  47     /* these are all in the Unix codepage */
  48     char *username_arg;
  49     char *domain_arg;
  50     char *password; /* not nul-terminated */
  51     int pwlen;
  52 } NtlmCredentials, *PNtlmCredentials;
  53
  54 /***********************************************************************
  55  *              QueryCredentialsAttributesA
  56  */
  57 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
  58         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  59 {
  60     SECURITY_STATUS ret;
  61
  62     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  63
  64     if(ulAttribute == SECPKG_ATTR_NAMES)
  65     {
  66         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  67         ret = SEC_E_UNSUPPORTED_FUNCTION;
  68     }
  69     else
  70         ret = SEC_E_UNSUPPORTED_FUNCTION;
  71
  72     return ret;
  73 }
  74
  75 /***********************************************************************
  76  *              QueryCredentialsAttributesW
  77  */
  78 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
  79         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  80 {
  81     SECURITY_STATUS ret;
  82
  83     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  84
  85     if(ulAttribute == SECPKG_ATTR_NAMES)
  86     {
  87         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  88         ret = SEC_E_UNSUPPORTED_FUNCTION;
  89     }
  90     else
  91         ret = SEC_E_UNSUPPORTED_FUNCTION;
  92
  93     return ret;
  94 }
  95
  96 /***********************************************************************
  97  *              AcquireCredentialsHandleW
  98  */
  99 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
 100  SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
 101  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 102  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 103 {
 104     SECURITY_STATUS ret;
 105     PNtlmCredentials ntlm_cred = NULL;
 106     SEC_WCHAR *username = NULL, *domain = NULL;
 107
 108     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 109      debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
 110      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 111
 112     switch(fCredentialUse)
 113     {
 114         case SECPKG_CRED_INBOUND:
 115             ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 116             if (!ntlm_cred)
 117                 ret = SEC_E_INSUFFICIENT_MEMORY;
 118             else
 119             {
 120                 ntlm_cred->mode = NTLM_SERVER;
 121                 ntlm_cred->username_arg = NULL;
 122                 ntlm_cred->domain_arg = NULL;
 123                 ntlm_cred->password = NULL;
 124                 ntlm_cred->pwlen = 0;
 125                 phCredential->dwUpper = fCredentialUse;
 126                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 127                 ret = SEC_E_OK;
 128             }
 129             break;
 130         case SECPKG_CRED_OUTBOUND:
 131             {
 132                 static const char username_arg[] = "--username=";
 133                 static const char domain_arg[] = "--domain=";
 134                 int unixcp_size;
 135
 136                 if(pAuthData == NULL)
 137                 {
 138                     LPWKSTA_USER_INFO_1 ui = NULL;
 139                     NET_API_STATUS status;
 140
 141                     status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
 142                     if (status != NERR_Success || ui == NULL)
 143                     {
 144                         ret = SEC_E_NO_CREDENTIALS;
 145                         phCredential = NULL;
 146                         break;
 147                     }
 148
 149                     username = HeapAlloc(GetProcessHeap(), 0,
 150                             (lstrlenW(ui->wkui1_username)+1) *
 151                             sizeof(SEC_WCHAR));
 152                     lstrcpyW(username, ui->wkui1_username);
 153
 154                     /* same for the domain */
 155                     domain = HeapAlloc(GetProcessHeap(), 0,
 156                             (lstrlenW(ui->wkui1_logon_domain)+1) *
 157                             sizeof(SEC_WCHAR));
 158                     lstrcpyW(domain, ui->wkui1_logon_domain);
 159                     NetApiBufferFree(ui);
 160                 }
 161                 else
 162                 {
 163                     PSEC_WINNT_AUTH_IDENTITY_W auth_data =
 164                         (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
 165
 166                     /* Get username and domain from pAuthData */
 167                     username = HeapAlloc(GetProcessHeap(), 0,
 168                             (auth_data->UserLength + 1) * sizeof(SEC_WCHAR));
 169                     memcpy(username, auth_data->User,
 170                            auth_data->UserLength * sizeof(SEC_WCHAR));
 171                     username[auth_data->UserLength] = '\0';
 172
 173                     domain = HeapAlloc(GetProcessHeap(), 0,
 174                             (auth_data->DomainLength + 1) * sizeof(SEC_WCHAR));
 175                     memcpy(domain, auth_data->Domain,
 176                            auth_data->DomainLength * sizeof(SEC_WCHAR));
 177                     domain[auth_data->DomainLength] = '\0';
 178                 }
 179
 180                 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 181                 if (!ntlm_cred)
 182                 {
 183                     ret = SEC_E_INSUFFICIENT_MEMORY;
 184                     break;
 185                 }
 186                 ntlm_cred->mode = NTLM_CLIENT;
 187                 ntlm_cred->password = NULL;
 188                 ntlm_cred->pwlen = 0;
 189
 190                 TRACE("Username is %s\n", debugstr_w(username));
 191                 unixcp_size =  WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 192                         username, -1, NULL, 0, NULL, NULL) + sizeof(username_arg);
 193                 ntlm_cred->username_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 194                 memcpy(ntlm_cred->username_arg, username_arg, sizeof(username_arg) - 1);
 195                 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, username, -1,
 196                         ntlm_cred->username_arg + sizeof(username_arg) - 1,
 197                         unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
 198
 199                 TRACE("Domain name is %s\n", debugstr_w(domain));
 200                 unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 201                         domain, -1, NULL, 0,  NULL, NULL) + sizeof(domain_arg);
 202                 ntlm_cred->domain_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 203                 memcpy(ntlm_cred->domain_arg, domain_arg, sizeof(domain_arg) - 1);
 204                 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domain,
 205                         -1, ntlm_cred->domain_arg + sizeof(domain_arg) - 1,
 206                         unixcp_size - sizeof(domain) + 1, NULL, NULL);
 207
 208                 if(pAuthData != NULL)
 209                 {
 210                     PSEC_WINNT_AUTH_IDENTITY_W auth_data =
 211                     (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
 212
 213                     if(auth_data->PasswordLength != 0)
 214                     {
 215                         ntlm_cred->pwlen = WideCharToMultiByte(CP_UNIXCP,
 216                                                                WC_NO_BEST_FIT_CHARS, auth_data->Password,
 217                                                                auth_data->PasswordLength, NULL, 0, NULL,
 218                                                                NULL);
 219
 220                         ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
 221                                                         ntlm_cred->pwlen);
 222
 223                         WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 224                                             auth_data->Password, auth_data->PasswordLength,
 225                                             ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
 226                     }
 227                 }
 228
 229                 phCredential->dwUpper = fCredentialUse;
 230                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 231                 TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
 232                       phCredential->dwUpper, phCredential->dwLower);
 233                 ret = SEC_E_OK;
 234                 break;
 235             }
 236         case SECPKG_CRED_BOTH:
 237             FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
 238             ret = SEC_E_UNSUPPORTED_FUNCTION;
 239             phCredential = NULL;
 240             break;
 241         default:
 242             phCredential = NULL;
 243             ret = SEC_E_UNKNOWN_CREDENTIALS;
 244     }
 245
 246     HeapFree(GetProcessHeap(), 0, username);
 247     HeapFree(GetProcessHeap(), 0, domain);
 248
 249     return ret;
 250 }
 251
 252 /***********************************************************************
 253  *              AcquireCredentialsHandleA
 254  */
 255 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
 256  SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
 257  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 258  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 259 {
 260     SECURITY_STATUS ret;
 261     int user_sizeW, domain_sizeW, passwd_sizeW;
 262
 263     SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
 264
 265     PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
 266     PSEC_WINNT_AUTH_IDENTITY_A identity  = NULL;
 267
 268     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 269      debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
 270      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 271
 272     if(pszPackage != NULL)
 273     {
 274         int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
 275                 NULL, 0);
 276
 277         package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
 278                 sizeof(SEC_WCHAR));
 279         MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
 280     }
 281
 282
 283     if(pAuthData != NULL)
 284     {
 285         identity = (PSEC_WINNT_AUTH_IDENTITY_A)pAuthData;
 286
 287         if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
 288         {
 289             pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
 290                     sizeof(SEC_WINNT_AUTH_IDENTITY_W));
 291
 292             if(identity->UserLength != 0)
 293             {
 294                 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
 295                     (LPCSTR)identity->User, identity->UserLength, NULL, 0);
 296                 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
 297                         sizeof(SEC_WCHAR));
 298                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
 299                     identity->UserLength, user, user_sizeW);
 300             }
 301             else
 302             {
 303                 user_sizeW = 0;
 304             }
 305
 306             if(identity->DomainLength != 0)
 307             {
 308                 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
 309                     (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
 310                 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
 311                     * sizeof(SEC_WCHAR));
 312                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
 313                     identity->DomainLength, domain, domain_sizeW);
 314             }
 315             else
 316             {
 317                 domain_sizeW = 0;
 318             }
 319
 320             if(identity->PasswordLength != 0)
 321             {
 322                 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
 323                     (LPCSTR)identity->Password, identity->PasswordLength,
 324                     NULL, 0);
 325                 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
 326                     * sizeof(SEC_WCHAR));
 327                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
 328                     identity->PasswordLength, passwd, passwd_sizeW);
 329             }
 330             else
 331             {
 332                 passwd_sizeW = 0;
 333             }
 334
 335             pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
 336             pAuthDataW->User = user;
 337             pAuthDataW->UserLength = user_sizeW;
 338             pAuthDataW->Domain = domain;
 339             pAuthDataW->DomainLength = domain_sizeW;
 340             pAuthDataW->Password = passwd;
 341             pAuthDataW->PasswordLength = passwd_sizeW;
 342         }
 343         else
 344         {
 345             pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
 346         }
 347     }
 348
 349     ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
 350             pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
 351             ptsExpiry);
 352
 353     HeapFree(GetProcessHeap(), 0, package);
 354     HeapFree(GetProcessHeap(), 0, user);
 355     HeapFree(GetProcessHeap(), 0, domain);
 356     HeapFree(GetProcessHeap(), 0, passwd);
 357     if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
 358         HeapFree(GetProcessHeap(), 0, pAuthDataW);
 359
 360     return ret;
 361 }
 362
 363 /*************************************************************************
 364  *             ntlm_GetTokenBufferIndex
 365  * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
 366  * Returns index if found or -1 if not found.
 367  */
 368 static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
 369 {
 370     UINT i;
 371
 372     TRACE("%p\n", pMessage);
 373
 374     for( i = 0; i < pMessage->cBuffers; ++i )
 375     {
 376         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
 377             return i;
 378     }
 379
 380     return -1;
 381 }
 382
 383 /***********************************************************************
 384  *              InitializeSecurityContextW
 385  */
 386 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
 387  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 388  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 389  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 390  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 391 {
 392     SECURITY_STATUS ret;
 393     PNtlmCredentials ntlm_cred = NULL;
 394     PNegoHelper helper = NULL;
 395     ULONG ctxt_attr = 0;
 396     char* buffer, *want_flags = NULL;
 397     PBYTE bin;
 398     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 399     int token_idx;
 400
 401     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 402      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 403      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 404
 405     /****************************************
 406      * When communicating with the client, there can be the
 407      * following reply packets:
 408      * YR <base64 blob>         should be sent to the server
 409      * PW                       should be sent back to helper with
 410      *                          base64 encoded password
 411      * AF <base64 blob>         client is done, blob should be
 412      *                          sent to server with KK prefixed
 413      * GF <string list>         A string list of negotiated flags
 414      * GK <base64 blob>         base64 encoded session key
 415      * BH <char reason>         something broke
 416      */
 417     /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
 418
 419     if (pszTargetName)
 420     {
 421         TRACE("According to a MS whitepaper pszTargetName is ignored.\n");
 422     }
 423
 424     if(TargetDataRep == SECURITY_NETWORK_DREP){
 425         TRACE("Setting SECURITY_NETWORK_DREP\n");
 426     }
 427
 428     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 429     bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
 430
 431     if((phContext == NULL) && (pInput == NULL))
 432     {
 433         static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
 434         static CHAR credentials_argv[] = "--use-cached-creds";
 435         SEC_CHAR *client_argv[6];
 436
 437         TRACE("First time in ISC()\n");
 438
 439         if(!phCredential)
 440             return SEC_E_INVALID_HANDLE;
 441
 442         /* As the server side of sspi never calls this, make sure that
 443          * the handler is a client handler.
 444          */
 445         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 446         if(ntlm_cred->mode != NTLM_CLIENT)
 447         {
 448             TRACE("Cred mode = %d\n", ntlm_cred->mode);
 449             return SEC_E_INVALID_HANDLE;
 450         }
 451
 452         client_argv[0] = ntlm_auth;
 453         client_argv[1] = helper_protocol;
 454         client_argv[2] = ntlm_cred->username_arg;
 455         client_argv[3] = ntlm_cred->domain_arg;
 456         client_argv[4] = credentials_argv;
 457         client_argv[5] = NULL;
 458
 459         if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
 460             goto isc_end;
 461
 462         helper->mode = NTLM_CLIENT;
 463         helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 464         if (!helper->session_key)
 465         {
 466             cleanup_helper(helper);
 467             ret = SEC_E_INSUFFICIENT_MEMORY;
 468             goto isc_end;
 469         }
 470
 471         /* Generate the dummy session key = MD4(MD4(password))*/
 472         if(ntlm_cred->password)
 473         {
 474             SEC_WCHAR *unicode_password;
 475             int passwd_lenW;
 476
 477             TRACE("Converting password to unicode.\n");
 478             passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 479                                               (LPCSTR)ntlm_cred->password, ntlm_cred->pwlen,
 480                                               NULL, 0);
 481             unicode_password = HeapAlloc(GetProcessHeap(), 0,
 482                                          passwd_lenW * sizeof(SEC_WCHAR));
 483             MultiByteToWideChar(CP_ACP, 0, (LPCSTR)ntlm_cred->password,
 484                                 ntlm_cred->pwlen, unicode_password, passwd_lenW);
 485
 486             SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
 487                                            passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
 488
 489             HeapFree(GetProcessHeap(), 0, unicode_password);
 490         }
 491         else
 492             memset(helper->session_key, 0, 16);
 493
 494         /* Allocate space for a maximal string of
 495          * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
 496          * NTLMSSP_FEATURE_SESSION_KEY"
 497          */
 498         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 499         if(want_flags == NULL)
 500         {
 501             cleanup_helper(helper);
 502             ret = SEC_E_INSUFFICIENT_MEMORY;
 503             goto isc_end;
 504         }
 505         lstrcpyA(want_flags, "SF");
 506         if(fContextReq & ISC_REQ_CONFIDENTIALITY)
 507         {
 508             char *ptr;
 509             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SEAL")) == NULL)
 510                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 511         }
 512         if(fContextReq & ISC_REQ_CONNECTION)
 513             ctxt_attr |= ISC_RET_CONNECTION;
 514         if(fContextReq & ISC_REQ_EXTENDED_ERROR)
 515             ctxt_attr |= ISC_RET_EXTENDED_ERROR;
 516         if(fContextReq & ISC_REQ_INTEGRITY)
 517         {
 518             char *ptr;
 519             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
 520                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 521         }
 522         if(fContextReq & ISC_REQ_MUTUAL_AUTH)
 523             ctxt_attr |= ISC_RET_MUTUAL_AUTH;
 524         if(fContextReq & ISC_REQ_REPLAY_DETECT)
 525         {
 526             char *ptr;
 527             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
 528                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 529         }
 530         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 531         {
 532             char *ptr;
 533             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
 534                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 535         }
 536         if(fContextReq & ISC_REQ_STREAM)
 537             FIXME("ISC_REQ_STREAM\n");
 538         if(fContextReq & ISC_REQ_USE_DCE_STYLE)
 539             ctxt_attr |= ISC_RET_USED_DCE_STYLE;
 540         if(fContextReq & ISC_REQ_DELEGATE)
 541             ctxt_attr |= ISC_RET_DELEGATE;
 542
 543         /* If no password is given, try to use cached credentials. Fall back to an empty
 544          * password if this failed. */
 545         if(ntlm_cred->password == NULL)
 546         {
 547             lstrcpynA(buffer, "OK", max_len-1);
 548             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 549             {
 550                 cleanup_helper(helper);
 551                 goto isc_end;
 552             }
 553             /* If the helper replied with "PW", using cached credentials failed */
 554             if(!strncmp(buffer, "PW", 2))
 555             {
 556                 TRACE("Using cached credentials failed. Using empty password.\n");
 557                 lstrcpynA(buffer, "PW AA==", max_len-1);
 558             }
 559             else /* Just do a noop on the next run */
 560                 lstrcpynA(buffer, "OK", max_len-1);
 561         }
 562         else
 563         {
 564             lstrcpynA(buffer, "PW ", max_len-1);
 565             if((ret = encodeBase64((unsigned char*)ntlm_cred->password,
 566                         ntlm_cred->pwlen, buffer+3,
 567                         max_len-3, &buffer_len)) != SEC_E_OK)
 568             {
 569                 cleanup_helper(helper);
 570                 goto isc_end;
 571             }
 572
 573         }
 574
 575         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 576         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 577         {
 578             cleanup_helper(helper);
 579             goto isc_end;
 580         }
 581
 582         TRACE("Helper returned %s\n", debugstr_a(buffer));
 583
 584         if(lstrlenA(want_flags) > 2)
 585         {
 586             TRACE("Want flags are %s\n", debugstr_a(want_flags));
 587             lstrcpynA(buffer, want_flags, max_len-1);
 588             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 589                     != SEC_E_OK)
 590                 goto isc_end;
 591             if(!strncmp(buffer, "BH", 2))
 592                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
 593         }
 594
 595         lstrcpynA(buffer, "YR", max_len-1);
 596
 597         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 598         {
 599             cleanup_helper(helper);
 600             goto isc_end;
 601         }
 602
 603         TRACE("%s\n", buffer);
 604
 605         if(strncmp(buffer, "YR ", 3) != 0)
 606         {
 607             /* Something borked */
 608             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 609             ret = SEC_E_INTERNAL_ERROR;
 610             cleanup_helper(helper);
 611             goto isc_end;
 612         }
 613         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 614                         max_len-1, &bin_len)) != SEC_E_OK)
 615         {
 616             cleanup_helper(helper);
 617             goto isc_end;
 618         }
 619
 620         /* put the decoded client blob into the out buffer */
 621
 622         phNewContext->dwUpper = ctxt_attr;
 623         phNewContext->dwLower = (ULONG_PTR)helper;
 624
 625         ret = SEC_I_CONTINUE_NEEDED;
 626     }
 627     else
 628     {
 629         int input_token_idx;
 630
 631         /* handle second call here */
 632         /* encode server data to base64 */
 633         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
 634         {
 635             ret = SEC_E_INVALID_TOKEN;
 636             goto isc_end;
 637         }
 638
 639         if(!phContext)
 640             return SEC_E_INVALID_HANDLE;
 641
 642         /* As the server side of sspi never calls this, make sure that
 643          * the handler is a client handler.
 644          */
 645         helper = (PNegoHelper)phContext->dwLower;
 646         if(helper->mode != NTLM_CLIENT)
 647         {
 648             TRACE("Helper mode = %d\n", helper->mode);
 649             return SEC_E_INVALID_HANDLE;
 650         }
 651
 652         if (!pInput->pBuffers[input_token_idx].pvBuffer)
 653         {
 654             ret = SEC_E_INTERNAL_ERROR;
 655             goto isc_end;
 656         }
 657
 658         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
 659         {
 660             TRACE("pInput->pBuffers[%d].cbBuffer is: %ld\n",
 661                     input_token_idx,
 662                     pInput->pBuffers[input_token_idx].cbBuffer);
 663             ret = SEC_E_INVALID_TOKEN;
 664             goto isc_end;
 665         }
 666         else
 667             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
 668
 669         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
 670
 671         lstrcpynA(buffer, "TT ", max_len-1);
 672
 673         if((ret = encodeBase64(bin, bin_len, buffer+3,
 674                         max_len-3, &buffer_len)) != SEC_E_OK)
 675             goto isc_end;
 676
 677         TRACE("Server sent: %s\n", debugstr_a(buffer));
 678
 679         /* send TT base64 blob to ntlm_auth */
 680         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 681             goto isc_end;
 682
 683         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 684
 685         if( (strncmp(buffer, "KK ", 3) != 0) &&
 686                 (strncmp(buffer, "AF ", 3) !=0))
 687         {
 688             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 689             ret = SEC_E_INVALID_TOKEN;
 690             goto isc_end;
 691         }
 692
 693         /* decode the blob and send it to server */
 694         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 695                         &bin_len)) != SEC_E_OK)
 696         {
 697             goto isc_end;
 698         }
 699
 700         phNewContext->dwUpper = ctxt_attr;
 701         phNewContext->dwLower = (ULONG_PTR)helper;
 702
 703         ret = SEC_E_OK;
 704     }
 705
 706     /* put the decoded client blob into the out buffer */
 707
 708     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
 709     {
 710         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
 711         ret = SEC_E_BUFFER_TOO_SMALL;
 712         if ((phContext == NULL) && (pInput == NULL))
 713         {
 714             cleanup_helper(helper);
 715             phNewContext->dwUpper = 0;
 716             phNewContext->dwLower = 0;
 717         }
 718         goto isc_end;
 719     }
 720
 721     if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
 722     {
 723         pOutput->pBuffers[token_idx].pvBuffer = SECUR32_ALLOC(bin_len);
 724         pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 725     }
 726     else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
 727     {
 728         TRACE("out buffer is NULL or has not enough space\n");
 729         ret = SEC_E_BUFFER_TOO_SMALL;
 730         if ((phContext == NULL) && (pInput == NULL))
 731         {
 732             cleanup_helper(helper);
 733             phNewContext->dwUpper = 0;
 734             phNewContext->dwLower = 0;
 735         }
 736         goto isc_end;
 737     }
 738
 739     if (!pOutput->pBuffers[token_idx].pvBuffer)
 740     {
 741         TRACE("out buffer is NULL\n");
 742         ret = SEC_E_INTERNAL_ERROR;
 743         if ((phContext == NULL) && (pInput == NULL))
 744         {
 745             cleanup_helper(helper);
 746             phNewContext->dwUpper = 0;
 747             phNewContext->dwLower = 0;
 748         }
 749         goto isc_end;
 750     }
 751
 752     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 753     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
 754
 755     if(ret == SEC_E_OK)
 756     {
 757         TRACE("Getting negotiated flags\n");
 758         lstrcpynA(buffer, "GF", max_len - 1);
 759         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 760             goto isc_end;
 761
 762         if(buffer_len < 3)
 763         {
 764             TRACE("No flags negotiated.\n");
 765             helper->neg_flags = 0l;
 766         }
 767         else
 768         {
 769             TRACE("Negotiated %s\n", debugstr_a(buffer));
 770             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
 771             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
 772         }
 773
 774         TRACE("Getting session key\n");
 775         lstrcpynA(buffer, "GK", max_len - 1);
 776         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 777             goto isc_end;
 778
 779         if(strncmp(buffer, "BH", 2) == 0)
 780             TRACE("No key negotiated.\n");
 781         else if(strncmp(buffer, "GK ", 3) == 0)
 782         {
 783             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 784                             &bin_len)) != SEC_E_OK)
 785             {
 786                 TRACE("Failed to decode session key\n");
 787             }
 788             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 789             HeapFree(GetProcessHeap(), 0, helper->session_key);
 790             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 791             if(!helper->session_key)
 792             {
 793                 TRACE("Failed to allocate memory for session key\n");
 794                 ret = SEC_E_INTERNAL_ERROR;
 795                 goto isc_end;
 796             }
 797             memcpy(helper->session_key, bin, bin_len);
 798         }
 799
 800         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 801         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 802         helper->crypt.ntlm.seq_num = 0l;
 803         SECUR32_CreateNTLMv2SubKeys(helper);
 804         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
 805         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
 806         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
 807                 (BYTE *)helper->crypt.ntlm2.send_seal_key, 16);
 808         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
 809                (BYTE *)helper->crypt.ntlm2.recv_seal_key, 16);
 810         helper->crypt.ntlm2.send_seq_no = 0l;
 811         helper->crypt.ntlm2.recv_seq_no = 0l;
 812     }
 813
 814 isc_end:
 815     HeapFree(GetProcessHeap(), 0, want_flags);
 816     HeapFree(GetProcessHeap(), 0, buffer);
 817     HeapFree(GetProcessHeap(), 0, bin);
 818     return ret;
 819 }
 820
 821 /***********************************************************************
 822  *              InitializeSecurityContextA
 823  */
 824 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 825  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 826  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 827  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 828  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 829 {
 830     SECURITY_STATUS ret;
 831     SEC_WCHAR *target = NULL;
 832
 833     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 834      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 835      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 836
 837     if(pszTargetName != NULL)
 838     {
 839         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 840             strlen(pszTargetName)+1, NULL, 0);
 841         target = HeapAlloc(GetProcessHeap(), 0, target_size *
 842                 sizeof(SEC_WCHAR));
 843         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 844             target, target_size);
 845     }
 846
 847     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 848             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 849             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 850
 851     HeapFree(GetProcessHeap(), 0, target);
 852     return ret;
 853 }
 854
 855 /***********************************************************************
 856  *              AcceptSecurityContext
 857  */
 858 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 859  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 860  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 861  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 862 {
 863     SECURITY_STATUS ret;
 864     char *buffer, *want_flags = NULL;
 865     PBYTE bin;
 866     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 867     ULONG ctxt_attr = 0;
 868     PNegoHelper helper;
 869     PNtlmCredentials ntlm_cred;
 870
 871     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 872      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 873      ptsExpiry);
 874
 875     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 876     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 877
 878     if(TargetDataRep == SECURITY_NETWORK_DREP){
 879         TRACE("Using SECURITY_NETWORK_DREP\n");
 880     }
 881
 882     if(phContext == NULL)
 883     {
 884         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
 885         SEC_CHAR *server_argv[] = { ntlm_auth,
 886             server_helper_protocol,
 887             NULL };
 888
 889         if (!phCredential)
 890         {
 891             ret = SEC_E_INVALID_HANDLE;
 892             goto asc_end;
 893         }
 894
 895         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 896
 897         if(ntlm_cred->mode != NTLM_SERVER)
 898         {
 899             ret = SEC_E_INVALID_HANDLE;
 900             goto asc_end;
 901         }
 902
 903         /* This is the first call to AcceptSecurityHandle */
 904         if(pInput == NULL)
 905         {
 906             ret = SEC_E_INCOMPLETE_MESSAGE;
 907             goto asc_end;
 908         }
 909
 910         if(pInput->cBuffers < 1)
 911         {
 912             ret = SEC_E_INCOMPLETE_MESSAGE;
 913             goto asc_end;
 914         }
 915
 916         if(pInput->pBuffers[0].cbBuffer > max_len)
 917         {
 918             ret = SEC_E_INVALID_TOKEN;
 919             goto asc_end;
 920         }
 921         else
 922             bin_len = pInput->pBuffers[0].cbBuffer;
 923
 924         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
 925             SEC_E_OK)
 926         {
 927             ret = SEC_E_INTERNAL_ERROR;
 928             goto asc_end;
 929         }
 930         helper->mode = NTLM_SERVER;
 931
 932         /* Handle all the flags */
 933         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 934         if(want_flags == NULL)
 935         {
 936             TRACE("Failed to allocate memory for the want_flags!\n");
 937             ret = SEC_E_INSUFFICIENT_MEMORY;
 938             cleanup_helper(helper);
 939             goto asc_end;
 940         }
 941         lstrcpyA(want_flags, "SF");
 942         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
 943         {
 944             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
 945         }
 946         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
 947         {
 948             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 949         }
 950         if(fContextReq & ASC_REQ_CONNECTION)
 951         {
 952             /* This is default, so we'll enable it */
 953             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
 954             ctxt_attr |= ASC_RET_CONNECTION;
 955         }
 956         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
 957         {
 958             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
 959         }
 960         if(fContextReq & ASC_REQ_INTEGRITY)
 961         {
 962             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 963         }
 964         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
 965         {
 966             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
 967         }
 968         if(fContextReq & ASC_REQ_REPLAY_DETECT)
 969         {
 970             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
 971         }
 972         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 973         {
 974             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
 975         }
 976         if(fContextReq & ISC_REQ_STREAM)
 977         {
 978             FIXME("ASC_REQ_STREAM stub\n");
 979         }
 980         /* Done with the flags */
 981
 982         if(lstrlenA(want_flags) > 3)
 983         {
 984             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
 985             lstrcpynA(buffer, want_flags, max_len - 1);
 986             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
 987                     SEC_E_OK)
 988             {
 989                 cleanup_helper(helper);
 990                 goto asc_end;
 991             }
 992             if(!strncmp(buffer, "BH", 2))
 993                 TRACE("Helper doesn't understand new command set\n");
 994         }
 995
 996         /* This is the YR request from the client, encode to base64 */
 997
 998         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
 999
1000         lstrcpynA(buffer, "YR ", max_len-1);
1001
1002         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1003                     &buffer_len)) != SEC_E_OK)
1004         {
1005             cleanup_helper(helper);
1006             goto asc_end;
1007         }
1008
1009         TRACE("Client sent: %s\n", debugstr_a(buffer));
1010
1011         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1012                     SEC_E_OK)
1013         {
1014             cleanup_helper(helper);
1015             goto asc_end;
1016         }
1017
1018         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1019         /* The expected answer is TT <base64 blob> */
1020
1021         if(strncmp(buffer, "TT ", 3) != 0)
1022         {
1023             ret = SEC_E_INTERNAL_ERROR;
1024             cleanup_helper(helper);
1025             goto asc_end;
1026         }
1027
1028         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1029                         &bin_len)) != SEC_E_OK)
1030         {
1031             cleanup_helper(helper);
1032             goto asc_end;
1033         }
1034
1035         /* send this to the client */
1036         if(pOutput == NULL)
1037         {
1038             ret = SEC_E_INSUFFICIENT_MEMORY;
1039             cleanup_helper(helper);
1040             goto asc_end;
1041         }
1042
1043         if(pOutput->cBuffers < 1)
1044         {
1045             ret = SEC_E_INSUFFICIENT_MEMORY;
1046             cleanup_helper(helper);
1047             goto asc_end;
1048         }
1049
1050         pOutput->pBuffers[0].cbBuffer = bin_len;
1051         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1052         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1053         ret = SEC_I_CONTINUE_NEEDED;
1054
1055     }
1056     else
1057     {
1058         /* we expect a KK request from client */
1059         if(pInput == NULL)
1060         {
1061             ret = SEC_E_INCOMPLETE_MESSAGE;
1062             goto asc_end;
1063         }
1064
1065         if(pInput->cBuffers < 1)
1066         {
1067             ret = SEC_E_INCOMPLETE_MESSAGE;
1068             goto asc_end;
1069         }
1070
1071         if(!phContext)
1072         {
1073             ret = SEC_E_INVALID_HANDLE;
1074             goto asc_end;
1075         }
1076
1077         helper = (PNegoHelper)phContext->dwLower;
1078
1079         if(helper->mode != NTLM_SERVER)
1080         {
1081             ret = SEC_E_INVALID_HANDLE;
1082             goto asc_end;
1083         }
1084
1085         if(pInput->pBuffers[0].cbBuffer > max_len)
1086         {
1087             ret = SEC_E_INVALID_TOKEN;
1088             goto asc_end;
1089         }
1090         else
1091             bin_len = pInput->pBuffers[0].cbBuffer;
1092
1093         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1094
1095         lstrcpynA(buffer, "KK ", max_len-1);
1096
1097         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1098                     &buffer_len)) != SEC_E_OK)
1099         {
1100             goto asc_end;
1101         }
1102
1103         TRACE("Client sent: %s\n", debugstr_a(buffer));
1104
1105         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1106                     SEC_E_OK)
1107         {
1108             goto asc_end;
1109         }
1110
1111         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1112
1113         if(strncmp(buffer, "AF ", 3) != 0)
1114         {
1115             if(strncmp(buffer, "NA ", 3) == 0)
1116             {
1117                 ret = SEC_E_LOGON_DENIED;
1118                 goto asc_end;
1119             }
1120             else
1121             {
1122                 ret = SEC_E_INTERNAL_ERROR;
1123                 goto asc_end;
1124             }
1125         }
1126         pOutput->pBuffers[0].cbBuffer = 0;
1127         ret = SEC_E_OK;
1128
1129         TRACE("Getting negotiated flags\n");
1130         lstrcpynA(buffer, "GF", max_len - 1);
1131         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1132             goto asc_end;
1133
1134         if(buffer_len < 3)
1135         {
1136             TRACE("No flags negotiated, or helper does not support GF command\n");
1137         }
1138         else
1139         {
1140             TRACE("Negotiated %s\n", debugstr_a(buffer));
1141             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
1142             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
1143         }
1144
1145         TRACE("Getting session key\n");
1146         lstrcpynA(buffer, "GK", max_len - 1);
1147         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1148             goto asc_end;
1149
1150         if(buffer_len < 3)
1151             TRACE("Helper does not support GK command\n");
1152         else
1153         {
1154             if(strncmp(buffer, "BH ", 3) == 0)
1155             {
1156                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1157                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1158                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1159                 memset(helper->session_key, 0 , 16);
1160             }
1161             else if(strncmp(buffer, "GK ", 3) == 0)
1162             {
1163                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1164                                 &bin_len)) != SEC_E_OK)
1165                 {
1166                     TRACE("Failed to decode session key\n");
1167                 }
1168                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1169                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1170                 if(!helper->session_key)
1171                 {
1172                     TRACE("Failed to allocate memory for session key\n");
1173                     ret = SEC_E_INTERNAL_ERROR;
1174                     goto asc_end;
1175                 }
1176                 memcpy(helper->session_key, bin, 16);
1177             }
1178         }
1179         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1180         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1181         helper->crypt.ntlm.seq_num = 0l;
1182     }
1183
1184     phNewContext->dwUpper = ctxt_attr;
1185     phNewContext->dwLower = (ULONG_PTR)helper;
1186
1187 asc_end:
1188     HeapFree(GetProcessHeap(), 0, want_flags);
1189     HeapFree(GetProcessHeap(), 0, buffer);
1190     HeapFree(GetProcessHeap(), 0, bin);
1191     return ret;
1192 }
1193
1194 /***********************************************************************
1195  *              CompleteAuthToken
1196  */
1197 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1198  PSecBufferDesc pToken)
1199 {
1200     /* We never need to call CompleteAuthToken anyway */
1201     TRACE("%p %p\n", phContext, pToken);
1202     if (!phContext)
1203         return SEC_E_INVALID_HANDLE;
1204
1205     return SEC_E_OK;
1206 }
1207
1208 /***********************************************************************
1209  *              DeleteSecurityContext
1210  */
1211 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1212 {
1213     PNegoHelper helper;
1214
1215     TRACE("%p\n", phContext);
1216     if (!phContext)
1217         return SEC_E_INVALID_HANDLE;
1218
1219     helper = (PNegoHelper)phContext->dwLower;
1220
1221     phContext->dwUpper = 0;
1222     phContext->dwLower = 0;
1223
1224     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1225     HeapFree(GetProcessHeap(), 0, helper->session_key);
1226     SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1227     SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1228     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1229     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1230     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1231     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1232
1233     cleanup_helper(helper);
1234
1235     return SEC_E_OK;
1236 }
1237
1238 /***********************************************************************
1239  *              QueryContextAttributesW
1240  */
1241 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1242  ULONG ulAttribute, void *pBuffer)
1243 {
1244     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1245     if (!phContext)
1246         return SEC_E_INVALID_HANDLE;
1247
1248     switch(ulAttribute)
1249     {
1250 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1251         _x(SECPKG_ATTR_ACCESS_TOKEN);
1252         _x(SECPKG_ATTR_AUTHORITY);
1253         _x(SECPKG_ATTR_DCE_INFO);
1254         case SECPKG_ATTR_FLAGS:
1255         {
1256             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1257             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1258
1259             spcf->Flags = 0;
1260             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1261                 spcf->Flags |= ISC_RET_INTEGRITY;
1262             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1263                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1264             return SEC_E_OK;
1265         }
1266         _x(SECPKG_ATTR_KEY_INFO);
1267         _x(SECPKG_ATTR_LIFESPAN);
1268         _x(SECPKG_ATTR_NAMES);
1269         _x(SECPKG_ATTR_NATIVE_NAMES);
1270         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1271         _x(SECPKG_ATTR_PACKAGE_INFO);
1272         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1273         _x(SECPKG_ATTR_SESSION_KEY);
1274         case SECPKG_ATTR_SIZES:
1275         {
1276             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1277             spcs->cbMaxToken = NTLM_MAX_BUF;
1278             spcs->cbMaxSignature = 16;
1279             spcs->cbBlockSize = 0;
1280             spcs->cbSecurityTrailer = 16;
1281             return SEC_E_OK;
1282         }
1283         _x(SECPKG_ATTR_STREAM_SIZES);
1284         _x(SECPKG_ATTR_TARGET_INFORMATION);
1285 #undef _x
1286         default:
1287             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1288     }
1289
1290     return SEC_E_UNSUPPORTED_FUNCTION;
1291 }
1292
1293 /***********************************************************************
1294  *              QueryContextAttributesA
1295  */
1296 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1297  ULONG ulAttribute, void *pBuffer)
1298 {
1299     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1300 }
1301
1302 /***********************************************************************
1303  *              ImpersonateSecurityContext
1304  */
1305 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1306 {
1307     SECURITY_STATUS ret;
1308
1309     TRACE("%p\n", phContext);
1310     if (phContext)
1311     {
1312         ret = SEC_E_UNSUPPORTED_FUNCTION;
1313     }
1314     else
1315     {
1316         ret = SEC_E_INVALID_HANDLE;
1317     }
1318     return ret;
1319 }
1320
1321 /***********************************************************************
1322  *              RevertSecurityContext
1323  */
1324 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1325 {
1326     SECURITY_STATUS ret;
1327
1328     TRACE("%p\n", phContext);
1329     if (phContext)
1330     {
1331         ret = SEC_E_UNSUPPORTED_FUNCTION;
1332     }
1333     else
1334     {
1335         ret = SEC_E_INVALID_HANDLE;
1336     }
1337     return ret;
1338 }
1339
1340 /***********************************************************************
1341  *             ntlm_CreateSignature
1342  * As both MakeSignature and VerifySignature need this, but different keys
1343  * are needed for NTLMv2, the logic goes into a helper function.
1344  * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1345  * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1346  * the signature is encrypted after the message was encrypted, so
1347  * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1348  * false.
1349  */
1350 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1351         int token_idx, SignDirection direction, BOOL encrypt_sig)
1352 {
1353     ULONG sign_version = 1;
1354     UINT i;
1355     PBYTE sig;
1356     TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1357             encrypt_sig);
1358
1359     sig = pMessage->pBuffers[token_idx].pvBuffer;
1360
1361     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1362             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1363     {
1364         BYTE digest[16];
1365         BYTE seq_no[4];
1366         HMAC_MD5_CTX hmac_md5_ctx;
1367
1368         TRACE("Signing NTLM2 style\n");
1369
1370         if(direction == NTLM_SEND)
1371         {
1372             seq_no[0] = (helper->crypt.ntlm2.send_seq_no >>  0) & 0xff;
1373             seq_no[1] = (helper->crypt.ntlm2.send_seq_no >>  8) & 0xff;
1374             seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1375             seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1376
1377             ++(helper->crypt.ntlm2.send_seq_no);
1378
1379             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1380         }
1381         else
1382         {
1383             seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >>  0) & 0xff;
1384             seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >>  8) & 0xff;
1385             seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1386             seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1387
1388             ++(helper->crypt.ntlm2.recv_seq_no);
1389
1390             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1391         }
1392
1393         HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1394         for( i = 0; i < pMessage->cBuffers; ++i )
1395         {
1396             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1397                 HMACMD5Update(&hmac_md5_ctx, (BYTE *)pMessage->pBuffers[i].pvBuffer,
1398                         pMessage->pBuffers[i].cbBuffer);
1399         }
1400
1401         HMACMD5Final(&hmac_md5_ctx, digest);
1402
1403         if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1404         {
1405             if(direction == NTLM_SEND)
1406                 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1407             else
1408                 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1409         }
1410
1411         /* The NTLM2 signature is the sign version */
1412         sig[ 0] = (sign_version >>  0) & 0xff;
1413         sig[ 1] = (sign_version >>  8) & 0xff;
1414         sig[ 2] = (sign_version >> 16) & 0xff;
1415         sig[ 3] = (sign_version >> 24) & 0xff;
1416         /* The first 8 bytes of the digest */
1417         memcpy(sig+4, digest, 8);
1418         /* And the sequence number */
1419         memcpy(sig+12, seq_no, 4);
1420
1421         pMessage->pBuffers[token_idx].cbBuffer = 16;
1422
1423         return SEC_E_OK;
1424     }
1425     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1426     {
1427         ULONG crc = 0U;
1428         TRACE("Signing NTLM1 style\n");
1429
1430         for(i=0; i < pMessage->cBuffers; ++i)
1431         {
1432             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1433             {
1434                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1435                     pMessage->pBuffers[i].cbBuffer, crc);
1436             }
1437         }
1438
1439         sig[ 0] = (sign_version >>  0) & 0xff;
1440         sig[ 1] = (sign_version >>  8) & 0xff;
1441         sig[ 2] = (sign_version >> 16) & 0xff;
1442         sig[ 3] = (sign_version >> 24) & 0xff;
1443         memset(sig+4, 0, 4);
1444         sig[ 8] = (crc >>  0) & 0xff;
1445         sig[ 9] = (crc >>  8) & 0xff;
1446         sig[10] = (crc >> 16) & 0xff;
1447         sig[11] = (crc >> 24) & 0xff;
1448         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1449         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1450         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1451         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1452
1453         ++(helper->crypt.ntlm.seq_num);
1454
1455         if(encrypt_sig)
1456             SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1457         return SEC_E_OK;
1458     }
1459
1460     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1461     {
1462         TRACE("Creating a dummy signature.\n");
1463         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1464         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1465         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1466         pMessage->pBuffers[token_idx].cbBuffer = 16;
1467         return SEC_E_OK;
1468     }
1469
1470     return SEC_E_UNSUPPORTED_FUNCTION;
1471 }
1472
1473 /***********************************************************************
1474  *              MakeSignature
1475  */
1476 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1477  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1478 {
1479     PNegoHelper helper;
1480     int token_idx;
1481
1482     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1483     if (!phContext)
1484         return SEC_E_INVALID_HANDLE;
1485
1486     if(fQOP)
1487         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1488
1489     if(MessageSeqNo)
1490         FIXME("Ignoring MessageSeqNo\n");
1491
1492     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1493         return SEC_E_INVALID_TOKEN;
1494
1495     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1496     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1497         return SEC_E_INVALID_TOKEN;
1498
1499     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1500         return SEC_E_BUFFER_TOO_SMALL;
1501
1502     helper = (PNegoHelper)phContext->dwLower;
1503     TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1504
1505     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1506 }
1507
1508 /***********************************************************************
1509  *              VerifySignature
1510  */
1511 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1512  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1513 {
1514     PNegoHelper helper;
1515     ULONG fQOP = 0;
1516     UINT i;
1517     int token_idx;
1518     SECURITY_STATUS ret;
1519     SecBufferDesc local_desc;
1520     PSecBuffer     local_buff;
1521     BYTE          local_sig[16];
1522
1523     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1524     if(!phContext)
1525         return SEC_E_INVALID_HANDLE;
1526
1527     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1528         return SEC_E_INVALID_TOKEN;
1529
1530     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1531         return SEC_E_INVALID_TOKEN;
1532
1533     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1534         return SEC_E_BUFFER_TOO_SMALL;
1535
1536     if(MessageSeqNo)
1537         FIXME("Ignoring MessageSeqNo\n");
1538
1539     helper = (PNegoHelper)phContext->dwLower;
1540     TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1541
1542     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1543
1544     local_desc.ulVersion = SECBUFFER_VERSION;
1545     local_desc.cBuffers = pMessage->cBuffers;
1546     local_desc.pBuffers = local_buff;
1547
1548     for(i=0; i < pMessage->cBuffers; ++i)
1549     {
1550         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1551         {
1552             local_buff[i].BufferType = SECBUFFER_TOKEN;
1553             local_buff[i].cbBuffer = 16;
1554             local_buff[i].pvBuffer = local_sig;
1555         }
1556         else
1557         {
1558             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1559             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1560             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1561         }
1562     }
1563
1564     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1565         return ret;
1566
1567     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1568                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1569         ret = SEC_E_MESSAGE_ALTERED;
1570     else
1571         ret = SEC_E_OK;
1572
1573     HeapFree(GetProcessHeap(), 0, local_buff);
1574     pfQOP = &fQOP;
1575
1576     return ret;
1577
1578 }
1579
1580 /***********************************************************************
1581  *             FreeCredentialsHandle
1582  */
1583 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1584         PCredHandle phCredential)
1585 {
1586     SECURITY_STATUS ret;
1587
1588     if(phCredential){
1589         PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1590         phCredential->dwUpper = 0;
1591         phCredential->dwLower = 0;
1592         if (ntlm_cred->password)
1593             memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1594         HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1595         HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1596         HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1597         ret = SEC_E_OK;
1598     }
1599     else
1600         ret = SEC_E_OK;
1601
1602     return ret;
1603 }
1604
1605 /***********************************************************************
1606  *             EncryptMessage
1607  */
1608 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1609         ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1610 {
1611     PNegoHelper helper;
1612     int token_idx;
1613
1614     TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1615
1616     if(!phContext)
1617         return SEC_E_INVALID_HANDLE;
1618
1619     if(fQOP)
1620         FIXME("Ignoring fQOP\n");
1621
1622     if(MessageSeqNo)
1623         FIXME("Ignoring MessageSeqNo\n");
1624
1625     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1626         return SEC_E_INVALID_TOKEN;
1627
1628     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1629         return SEC_E_INVALID_TOKEN;
1630
1631     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1632         return SEC_E_BUFFER_TOO_SMALL;
1633
1634     helper = (PNegoHelper) phContext->dwLower;
1635
1636     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1637             helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1638     {
1639         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1640         SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1641                 (BYTE *)pMessage->pBuffers[1].pvBuffer,
1642                 pMessage->pBuffers[1].cbBuffer);
1643
1644         if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1645             SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1646                     ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1647
1648
1649         return SEC_E_OK;
1650     }
1651     else
1652     {
1653         PBYTE sig;
1654         ULONG save_flags;
1655
1656         /* EncryptMessage always produces real signatures, so make sure
1657          * NTLMSSP_NEGOTIATE_SIGN is set*/
1658         save_flags = helper->neg_flags;
1659         helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1660         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1661         helper->neg_flags = save_flags;
1662
1663         sig = pMessage->pBuffers[token_idx].pvBuffer;
1664
1665         SECUR32_arc4Process(helper->crypt.ntlm.a4i, pMessage->pBuffers[1].pvBuffer,
1666                 pMessage->pBuffers[1].cbBuffer);
1667         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1668
1669         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1670             memset(sig+4, 0, 4);
1671
1672     }
1673
1674     return SEC_E_OK;
1675 }
1676
1677 /***********************************************************************
1678  *             DecryptMessage
1679  */
1680 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1681         PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1682 {
1683     SECURITY_STATUS ret;
1684     ULONG ntlmssp_flags_save;
1685     PNegoHelper helper;
1686     int token_idx;
1687     TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1688
1689     if(!phContext)
1690         return SEC_E_INVALID_HANDLE;
1691
1692     if(MessageSeqNo)
1693         FIXME("Ignoring MessageSeqNo\n");
1694
1695     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1696         return SEC_E_INVALID_TOKEN;
1697
1698     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1699         return SEC_E_INVALID_TOKEN;
1700
1701     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1702         return SEC_E_BUFFER_TOO_SMALL;
1703
1704     helper = (PNegoHelper) phContext->dwLower;
1705
1706     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1707     {
1708         SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1709                 pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer);
1710     }
1711     else
1712     {
1713         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1714                 pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer);
1715     }
1716
1717     /* Make sure we use a session key for the signature check, EncryptMessage
1718      * always does that, even in the dummy case */
1719     ntlmssp_flags_save = helper->neg_flags;
1720
1721     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1722     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1723
1724     helper->neg_flags = ntlmssp_flags_save;
1725
1726     return ret;
1727 }
1728
1729 static const SecurityFunctionTableA ntlmTableA = {
1730     1,
1731     NULL,   /* EnumerateSecurityPackagesA */
1732     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1733     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1734     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1735     NULL,   /* Reserved2 */
1736     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1737     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1738     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1739     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1740     NULL,  /* ApplyControlToken */
1741     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1742     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1743     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1744     ntlm_MakeSignature,                 /* MakeSignature */
1745     ntlm_VerifySignature,               /* VerifySignature */
1746     FreeContextBuffer,                  /* FreeContextBuffer */
1747     NULL,   /* QuerySecurityPackageInfoA */
1748     NULL,   /* Reserved3 */
1749     NULL,   /* Reserved4 */
1750     NULL,   /* ExportSecurityContext */
1751     NULL,   /* ImportSecurityContextA */
1752     NULL,   /* AddCredentialsA */
1753     NULL,   /* Reserved8 */
1754     NULL,   /* QuerySecurityContextToken */
1755     ntlm_EncryptMessage,                /* EncryptMessage */
1756     ntlm_DecryptMessage,                /* DecryptMessage */
1757     NULL,   /* SetContextAttributesA */
1758 };
1759
1760 static const SecurityFunctionTableW ntlmTableW = {
1761     1,
1762     NULL,   /* EnumerateSecurityPackagesW */
1763     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1764     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1765     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1766     NULL,   /* Reserved2 */
1767     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1768     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1769     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1770     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1771     NULL,  /* ApplyControlToken */
1772     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1773     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1774     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1775     ntlm_MakeSignature,                 /* MakeSignature */
1776     ntlm_VerifySignature,               /* VerifySignature */
1777     FreeContextBuffer,                  /* FreeContextBuffer */
1778     NULL,   /* QuerySecurityPackageInfoW */
1779     NULL,   /* Reserved3 */
1780     NULL,   /* Reserved4 */
1781     NULL,   /* ExportSecurityContext */
1782     NULL,   /* ImportSecurityContextW */
1783     NULL,   /* AddCredentialsW */
1784     NULL,   /* Reserved8 */
1785     NULL,   /* QuerySecurityContextToken */
1786     ntlm_EncryptMessage,                /* EncryptMessage */
1787     ntlm_DecryptMessage,                /* DecryptMessage */
1788     NULL,   /* SetContextAttributesW */
1789 };
1790
1791 #define NTLM_COMMENT \
1792    { 'N', 'T', 'L', 'M', ' ', \
1793      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1794      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1795
1796 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1797 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1798
1799 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1800
1801 static char ntlm_name_A[] = NTLM_NAME;
1802 static WCHAR ntlm_name_W[] = NTLM_NAME;
1803
1804 /* According to Windows, NTLM has the following capabilities.  */
1805 #define CAPS ( \
1806         SECPKG_FLAG_INTEGRITY | \
1807         SECPKG_FLAG_PRIVACY | \
1808         SECPKG_FLAG_TOKEN_ONLY | \
1809         SECPKG_FLAG_CONNECTION | \
1810         SECPKG_FLAG_MULTI_REQUIRED | \
1811         SECPKG_FLAG_IMPERSONATION | \
1812         SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1813         SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1814
1815 static const SecPkgInfoW infoW = {
1816     CAPS,
1817     1,
1818     RPC_C_AUTHN_WINNT,
1819     NTLM_MAX_BUF,
1820     ntlm_name_W,
1821     ntlm_comment_W
1822 };
1823
1824 static const SecPkgInfoA infoA = {
1825     CAPS,
1826     1,
1827     RPC_C_AUTHN_WINNT,
1828     NTLM_MAX_BUF,
1829     ntlm_name_A,
1830     ntlm_comment_A
1831 };
1832
1833 void SECUR32_initNTLMSP(void)
1834 {
1835     SECURITY_STATUS ret;
1836     PNegoHelper helper;
1837     static CHAR version[] = "--version";
1838
1839     SEC_CHAR *args[] = {
1840         ntlm_auth,
1841         version,
1842         NULL };
1843
1844     if((ret = fork_helper(&helper, ntlm_auth, args)) != SEC_E_OK)
1845     {
1846         /* Cheat and allocate a helper anyway, so cleanup later will work. */
1847         helper = HeapAlloc(GetProcessHeap(),0, sizeof(PNegoHelper));
1848         helper->major = helper->minor = helper->micro = -1;
1849     }
1850     else
1851         check_version(helper);
1852
1853     if( (helper->major >  MIN_NTLM_AUTH_MAJOR_VERSION) ||
1854         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1855          helper->minor >  MIN_NTLM_AUTH_MINOR_VERSION) ||
1856         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1857          helper->minor == MIN_NTLM_AUTH_MINOR_VERSION  &&
1858          helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
1859     {
1860         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
1861         SECUR32_addPackages(provider, 1L, &infoA, &infoW);
1862     }
1863     else
1864     {
1865         ERR("%s was not found or is outdated. "
1866             "Make sure that ntlm_auth >= %d.%d.%d is in your path.\n",
1867             ntlm_auth,
1868             MIN_NTLM_AUTH_MAJOR_VERSION,
1869             MIN_NTLM_AUTH_MINOR_VERSION,
1870             MIN_NTLM_AUTH_MICRO_VERSION);
1871         ERR("Usually, you can find it in the winbind package of your "
1872             "distribution.\n");
1873
1874     }
1875     cleanup_helper(helper);
1876 }