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 "wincred.h"
  28 #include "rpc.h"
  29 #include "sspi.h"
  30 #include "lm.h"
  31 #include "secur32_priv.h"
  32 #include "hmac_md5.h"
  33 #include "wine/unicode.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
  37 WINE_DECLARE_DEBUG_CHANNEL(winediag);
  38
  39 #define NTLM_MAX_BUF 1904
  40 #define MIN_NTLM_AUTH_MAJOR_VERSION 3
  41 #define MIN_NTLM_AUTH_MINOR_VERSION 0
  42 #define MIN_NTLM_AUTH_MICRO_VERSION 25
  43
  44 static CHAR ntlm_auth[] = "ntlm_auth";
  45
  46 /***********************************************************************
  47  *              QueryCredentialsAttributesA
  48  */
  49 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
  50         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  51 {
  52     SECURITY_STATUS ret;
  53
  54     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  55
  56     if(ulAttribute == SECPKG_ATTR_NAMES)
  57     {
  58         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  59         ret = SEC_E_UNSUPPORTED_FUNCTION;
  60     }
  61     else
  62         ret = SEC_E_UNSUPPORTED_FUNCTION;
  63
  64     return ret;
  65 }
  66
  67 /***********************************************************************
  68  *              QueryCredentialsAttributesW
  69  */
  70 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
  71         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  72 {
  73     SECURITY_STATUS ret;
  74
  75     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  76
  77     if(ulAttribute == SECPKG_ATTR_NAMES)
  78     {
  79         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  80         ret = SEC_E_UNSUPPORTED_FUNCTION;
  81     }
  82     else
  83         ret = SEC_E_UNSUPPORTED_FUNCTION;
  84
  85     return ret;
  86 }
  87
  88 static char *ntlm_GetUsernameArg(LPCWSTR userW, INT userW_length)
  89 {
  90     static const char username_arg[] = "--username=";
  91     char *user;
  92     int unixcp_size;
  93
  94     unixcp_size =  WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
  95         userW, userW_length, NULL, 0, NULL, NULL) + sizeof(username_arg);
  96     user = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
  97     if (!user) return NULL;
  98     memcpy(user, username_arg, sizeof(username_arg) - 1);
  99     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, userW, userW_length,
 100         user + sizeof(username_arg) - 1,
 101         unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
 102     user[unixcp_size - 1] = '\0';
 103     return user;
 104 }
 105
 106 static char *ntlm_GetDomainArg(LPCWSTR domainW, INT domainW_length)
 107 {
 108     static const char domain_arg[] = "--domain=";
 109     char *domain;
 110     int unixcp_size;
 111
 112     unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 113         domainW, domainW_length, NULL, 0,  NULL, NULL) + sizeof(domain_arg);
 114     domain = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 115     if (!domain) return NULL;
 116     memcpy(domain, domain_arg, sizeof(domain_arg) - 1);
 117     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domainW,
 118         domainW_length, domain + sizeof(domain_arg) - 1,
 119         unixcp_size - sizeof(domain) + 1, NULL, NULL);
 120     domain[unixcp_size - 1] = '\0';
 121     return domain;
 122 }
 123
 124 /***********************************************************************
 125  *              AcquireCredentialsHandleW
 126  */
 127 SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
 128  SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
 129  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 130  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 131 {
 132     SECURITY_STATUS ret;
 133     PNtlmCredentials ntlm_cred;
 134
 135     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 136      debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
 137      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 138
 139     switch(fCredentialUse)
 140     {
 141         case SECPKG_CRED_INBOUND:
 142             ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 143             if (!ntlm_cred)
 144                 ret = SEC_E_INSUFFICIENT_MEMORY;
 145             else
 146             {
 147                 ntlm_cred->mode = NTLM_SERVER;
 148                 ntlm_cred->username_arg = NULL;
 149                 ntlm_cred->domain_arg = NULL;
 150                 ntlm_cred->password = NULL;
 151                 ntlm_cred->pwlen = 0;
 152                 ntlm_cred->no_cached_credentials = 0;
 153
 154                 phCredential->dwUpper = fCredentialUse;
 155                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 156                 ret = SEC_E_OK;
 157             }
 158             break;
 159         case SECPKG_CRED_OUTBOUND:
 160             {
 161                 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 162                 if (!ntlm_cred)
 163                 {
 164                     ret = SEC_E_INSUFFICIENT_MEMORY;
 165                     break;
 166                 }
 167                 ntlm_cred->mode = NTLM_CLIENT;
 168                 ntlm_cred->username_arg = NULL;
 169                 ntlm_cred->domain_arg = NULL;
 170                 ntlm_cred->password = NULL;
 171                 ntlm_cred->pwlen = 0;
 172                 ntlm_cred->no_cached_credentials = 0;
 173
 174                 if(pAuthData != NULL)
 175                 {
 176                     PSEC_WINNT_AUTH_IDENTITY_W auth_data = pAuthData;
 177
 178                     TRACE("Username is %s\n", debugstr_wn(auth_data->User, auth_data->UserLength));
 179                     TRACE("Domain name is %s\n", debugstr_wn(auth_data->Domain, auth_data->DomainLength));
 180
 181                     ntlm_cred->username_arg = ntlm_GetUsernameArg(auth_data->User, auth_data->UserLength);
 182                     ntlm_cred->domain_arg = ntlm_GetDomainArg(auth_data->Domain, auth_data->DomainLength);
 183
 184                     if(auth_data->PasswordLength != 0)
 185                     {
 186                         ntlm_cred->pwlen = WideCharToMultiByte(CP_UNIXCP,
 187                                                                WC_NO_BEST_FIT_CHARS, auth_data->Password,
 188                                                                auth_data->PasswordLength, NULL, 0, NULL,
 189                                                                NULL);
 190
 191                         ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
 192                                                         ntlm_cred->pwlen);
 193
 194                         WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 195                                             auth_data->Password, auth_data->PasswordLength,
 196                                             ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
 197                     }
 198                 }
 199
 200                 phCredential->dwUpper = fCredentialUse;
 201                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 202                 TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
 203                       phCredential->dwUpper, phCredential->dwLower);
 204                 ret = SEC_E_OK;
 205                 break;
 206             }
 207         case SECPKG_CRED_BOTH:
 208             FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
 209             ret = SEC_E_UNSUPPORTED_FUNCTION;
 210             phCredential = NULL;
 211             break;
 212         default:
 213             phCredential = NULL;
 214             ret = SEC_E_UNKNOWN_CREDENTIALS;
 215     }
 216     return ret;
 217 }
 218
 219 /***********************************************************************
 220  *              AcquireCredentialsHandleA
 221  */
 222 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
 223  SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
 224  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 225  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 226 {
 227     SECURITY_STATUS ret;
 228     int user_sizeW, domain_sizeW, passwd_sizeW;
 229
 230     SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
 231
 232     PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
 233     PSEC_WINNT_AUTH_IDENTITY_A identity  = NULL;
 234
 235     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 236      debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
 237      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 238
 239     if(pszPackage != NULL)
 240     {
 241         int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
 242                 NULL, 0);
 243
 244         package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
 245                 sizeof(SEC_WCHAR));
 246         MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
 247     }
 248
 249
 250     if(pAuthData != NULL)
 251     {
 252         identity = pAuthData;
 253
 254         if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
 255         {
 256             pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
 257                     sizeof(SEC_WINNT_AUTH_IDENTITY_W));
 258
 259             if(identity->UserLength != 0)
 260             {
 261                 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
 262                     (LPCSTR)identity->User, identity->UserLength, NULL, 0);
 263                 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
 264                         sizeof(SEC_WCHAR));
 265                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
 266                     identity->UserLength, user, user_sizeW);
 267             }
 268             else
 269             {
 270                 user_sizeW = 0;
 271             }
 272
 273             if(identity->DomainLength != 0)
 274             {
 275                 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
 276                     (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
 277                 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
 278                     * sizeof(SEC_WCHAR));
 279                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
 280                     identity->DomainLength, domain, domain_sizeW);
 281             }
 282             else
 283             {
 284                 domain_sizeW = 0;
 285             }
 286
 287             if(identity->PasswordLength != 0)
 288             {
 289                 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
 290                     (LPCSTR)identity->Password, identity->PasswordLength,
 291                     NULL, 0);
 292                 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
 293                     * sizeof(SEC_WCHAR));
 294                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
 295                     identity->PasswordLength, passwd, passwd_sizeW);
 296             }
 297             else
 298             {
 299                 passwd_sizeW = 0;
 300             }
 301
 302             pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
 303             pAuthDataW->User = user;
 304             pAuthDataW->UserLength = user_sizeW;
 305             pAuthDataW->Domain = domain;
 306             pAuthDataW->DomainLength = domain_sizeW;
 307             pAuthDataW->Password = passwd;
 308             pAuthDataW->PasswordLength = passwd_sizeW;
 309         }
 310         else
 311         {
 312             pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
 313         }
 314     }
 315
 316     ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
 317             pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
 318             ptsExpiry);
 319
 320     HeapFree(GetProcessHeap(), 0, package);
 321     HeapFree(GetProcessHeap(), 0, user);
 322     HeapFree(GetProcessHeap(), 0, domain);
 323     HeapFree(GetProcessHeap(), 0, passwd);
 324     if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
 325         HeapFree(GetProcessHeap(), 0, pAuthDataW);
 326
 327     return ret;
 328 }
 329
 330 /*************************************************************************
 331  *             ntlm_GetTokenBufferIndex
 332  * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
 333  * Returns index if found or -1 if not found.
 334  */
 335 static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
 336 {
 337     UINT i;
 338
 339     TRACE("%p\n", pMessage);
 340
 341     for( i = 0; i < pMessage->cBuffers; ++i )
 342     {
 343         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
 344             return i;
 345     }
 346
 347     return -1;
 348 }
 349
 350 /*************************************************************************
 351  *             ntlm_GetDataBufferIndex
 352  * Calculates the index of the first secbuffer with BufferType == SECBUFFER_DATA
 353  * Returns index if found or -1 if not found.
 354  */
 355 static int ntlm_GetDataBufferIndex(PSecBufferDesc pMessage)
 356 {
 357     UINT i;
 358
 359     TRACE("%p\n", pMessage);
 360
 361     for( i = 0; i < pMessage->cBuffers; ++i )
 362     {
 363         if(pMessage->pBuffers[i].BufferType == SECBUFFER_DATA)
 364             return i;
 365     }
 366
 367     return -1;
 368 }
 369
 370 static BOOL ntlm_GetCachedCredential(const SEC_WCHAR *pszTargetName, PCREDENTIALW *cred)
 371 {
 372     LPCWSTR p;
 373     LPCWSTR pszHost;
 374     LPWSTR pszHostOnly;
 375     BOOL ret;
 376
 377     if (!pszTargetName)
 378         return FALSE;
 379
 380     /* try to get the start of the hostname from service principal name (SPN) */
 381     pszHost = strchrW(pszTargetName, '/');
 382     if (pszHost)
 383     {
 384         /* skip slash character */
 385         pszHost++;
 386
 387         /* find end of host by detecting start of instance port or start of referrer */
 388         p = strchrW(pszHost, ':');
 389         if (!p)
 390             p = strchrW(pszHost, '/');
 391         if (!p)
 392             p = pszHost + strlenW(pszHost);
 393     }
 394     else /* otherwise not an SPN, just a host */
 395     {
 396         pszHost = pszTargetName;
 397         p = pszHost + strlenW(pszHost);
 398     }
 399
 400     pszHostOnly = HeapAlloc(GetProcessHeap(), 0, (p - pszHost + 1) * sizeof(WCHAR));
 401     if (!pszHostOnly)
 402         return FALSE;
 403
 404     memcpy(pszHostOnly, pszHost, (p - pszHost) * sizeof(WCHAR));
 405     pszHostOnly[p - pszHost] = '\0';
 406
 407     ret = CredReadW(pszHostOnly, CRED_TYPE_DOMAIN_PASSWORD, 0, cred);
 408
 409     HeapFree(GetProcessHeap(), 0, pszHostOnly);
 410     return ret;
 411 }
 412
 413 /***********************************************************************
 414  *              InitializeSecurityContextW
 415  */
 416 SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
 417  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 418  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 419  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 420  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 421 {
 422     SECURITY_STATUS ret;
 423     PNtlmCredentials ntlm_cred;
 424     PNegoHelper helper = NULL;
 425     ULONG ctxt_attr = 0;
 426     char* buffer, *want_flags = NULL;
 427     PBYTE bin;
 428     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 429     int token_idx;
 430     SEC_CHAR *username = NULL;
 431     SEC_CHAR *domain = NULL;
 432     SEC_CHAR *password = NULL;
 433
 434     TRACE("%p %p %s 0x%08x %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 435      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 436      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 437
 438     /****************************************
 439      * When communicating with the client, there can be the
 440      * following reply packets:
 441      * YR <base64 blob>         should be sent to the server
 442      * PW                       should be sent back to helper with
 443      *                          base64 encoded password
 444      * AF <base64 blob>         client is done, blob should be
 445      *                          sent to server with KK prefixed
 446      * GF <string list>         A string list of negotiated flags
 447      * GK <base64 blob>         base64 encoded session key
 448      * BH <char reason>         something broke
 449      */
 450     /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
 451
 452     if(TargetDataRep == SECURITY_NETWORK_DREP){
 453         TRACE("Setting SECURITY_NETWORK_DREP\n");
 454     }
 455
 456     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 457     bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
 458
 459     if((phContext == NULL) && (pInput == NULL))
 460     {
 461         static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
 462         static CHAR credentials_argv[] = "--use-cached-creds";
 463         SEC_CHAR *client_argv[5];
 464         int pwlen = 0;
 465
 466         TRACE("First time in ISC()\n");
 467
 468         if(!phCredential)
 469         {
 470             ret = SEC_E_INVALID_HANDLE;
 471             goto isc_end;
 472         }
 473
 474         /* As the server side of sspi never calls this, make sure that
 475          * the handler is a client handler.
 476          */
 477         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 478         if(ntlm_cred->mode != NTLM_CLIENT)
 479         {
 480             TRACE("Cred mode = %d\n", ntlm_cred->mode);
 481             ret = SEC_E_INVALID_HANDLE;
 482             goto isc_end;
 483         }
 484
 485         client_argv[0] = ntlm_auth;
 486         client_argv[1] = helper_protocol;
 487         if (!ntlm_cred->username_arg && !ntlm_cred->domain_arg)
 488         {
 489             LPWKSTA_USER_INFO_1 ui = NULL;
 490             NET_API_STATUS status;
 491             PCREDENTIALW cred;
 492
 493             if (ntlm_GetCachedCredential(pszTargetName, &cred))
 494             {
 495                 LPWSTR p;
 496                 p = strchrW(cred->UserName, '\\');
 497                 if (p)
 498                 {
 499                     domain = ntlm_GetDomainArg(cred->UserName, p - cred->UserName);
 500                     p++;
 501                 }
 502                 else
 503                 {
 504                     domain = ntlm_GetDomainArg(NULL, 0);
 505                     p = cred->UserName;
 506                 }
 507
 508                 username = ntlm_GetUsernameArg(p, -1);
 509
 510                 if(cred->CredentialBlobSize != 0)
 511                 {
 512                     pwlen = WideCharToMultiByte(CP_UNIXCP,
 513                         WC_NO_BEST_FIT_CHARS, (LPWSTR)cred->CredentialBlob,
 514                         cred->CredentialBlobSize / sizeof(WCHAR), NULL, 0,
 515                         NULL, NULL);
 516
 517                     password = HeapAlloc(GetProcessHeap(), 0, pwlen);
 518
 519                     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 520                                         (LPWSTR)cred->CredentialBlob,
 521                                         cred->CredentialBlobSize / sizeof(WCHAR),
 522                                         password, pwlen, NULL, NULL);
 523                 }
 524
 525                 CredFree(cred);
 526
 527                 client_argv[2] = username;
 528                 client_argv[3] = domain;
 529                 client_argv[4] = NULL;
 530             }
 531             else
 532             {
 533                 status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
 534                 if (status != NERR_Success || ui == NULL || ntlm_cred->no_cached_credentials)
 535                 {
 536                     ret = SEC_E_NO_CREDENTIALS;
 537                     goto isc_end;
 538                 }
 539                 username = ntlm_GetUsernameArg(ui->wkui1_username, -1);
 540                 NetApiBufferFree(ui);
 541
 542                 TRACE("using cached credentials\n");
 543
 544                 client_argv[2] = username;
 545                 client_argv[3] = credentials_argv;
 546                 client_argv[4] = NULL;
 547             }
 548         }
 549         else
 550         {
 551             client_argv[2] = ntlm_cred->username_arg;
 552             client_argv[3] = ntlm_cred->domain_arg;
 553             client_argv[4] = NULL;
 554         }
 555
 556         if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
 557             goto isc_end;
 558
 559         helper->mode = NTLM_CLIENT;
 560         helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 561         if (!helper->session_key)
 562         {
 563             cleanup_helper(helper);
 564             ret = SEC_E_INSUFFICIENT_MEMORY;
 565             goto isc_end;
 566         }
 567
 568         /* Generate the dummy session key = MD4(MD4(password))*/
 569         if(password || ntlm_cred->password)
 570         {
 571             SEC_WCHAR *unicode_password;
 572             int passwd_lenW;
 573
 574             TRACE("Converting password to unicode.\n");
 575             passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 576                                               password ? password : ntlm_cred->password,
 577                                               password ? pwlen : ntlm_cred->pwlen,
 578                                               NULL, 0);
 579             unicode_password = HeapAlloc(GetProcessHeap(), 0,
 580                                          passwd_lenW * sizeof(SEC_WCHAR));
 581             MultiByteToWideChar(CP_ACP, 0, password ? password : ntlm_cred->password,
 582                                 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
 583
 584             SECUR32_CreateNTLM1SessionKey((PBYTE)unicode_password,
 585                                           passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
 586
 587             HeapFree(GetProcessHeap(), 0, unicode_password);
 588         }
 589         else
 590             memset(helper->session_key, 0, 16);
 591
 592         /* Allocate space for a maximal string of
 593          * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
 594          * NTLMSSP_FEATURE_SESSION_KEY"
 595          */
 596         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 597         if(want_flags == NULL)
 598         {
 599             cleanup_helper(helper);
 600             ret = SEC_E_INSUFFICIENT_MEMORY;
 601             goto isc_end;
 602         }
 603         lstrcpyA(want_flags, "SF");
 604         if(fContextReq & ISC_REQ_CONFIDENTIALITY)
 605         {
 606             if(strstr(want_flags, "NTLMSSP_FEATURE_SEAL") == NULL)
 607                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 608         }
 609         if(fContextReq & ISC_REQ_CONNECTION)
 610             ctxt_attr |= ISC_RET_CONNECTION;
 611         if(fContextReq & ISC_REQ_EXTENDED_ERROR)
 612             ctxt_attr |= ISC_RET_EXTENDED_ERROR;
 613         if(fContextReq & ISC_REQ_INTEGRITY)
 614         {
 615             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 616                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 617         }
 618         if(fContextReq & ISC_REQ_MUTUAL_AUTH)
 619             ctxt_attr |= ISC_RET_MUTUAL_AUTH;
 620         if(fContextReq & ISC_REQ_REPLAY_DETECT)
 621         {
 622             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 623                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 624         }
 625         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 626         {
 627             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 628                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 629         }
 630         if(fContextReq & ISC_REQ_STREAM)
 631             FIXME("ISC_REQ_STREAM\n");
 632         if(fContextReq & ISC_REQ_USE_DCE_STYLE)
 633             ctxt_attr |= ISC_RET_USED_DCE_STYLE;
 634         if(fContextReq & ISC_REQ_DELEGATE)
 635             ctxt_attr |= ISC_RET_DELEGATE;
 636
 637         /* If no password is given, try to use cached credentials. Fall back to an empty
 638          * password if this failed. */
 639         if(!password && !ntlm_cred->password)
 640         {
 641             lstrcpynA(buffer, "OK", max_len-1);
 642             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 643             {
 644                 cleanup_helper(helper);
 645                 goto isc_end;
 646             }
 647             /* If the helper replied with "PW", using cached credentials failed */
 648             if(!strncmp(buffer, "PW", 2))
 649             {
 650                 TRACE("Using cached credentials failed.\n");
 651                 lstrcpynA(buffer, "PW AA==", max_len-1);
 652             }
 653             else /* Just do a noop on the next run */
 654                 lstrcpynA(buffer, "OK", max_len-1);
 655         }
 656         else
 657         {
 658             lstrcpynA(buffer, "PW ", max_len-1);
 659             if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
 660                         password ? pwlen : ntlm_cred->pwlen, buffer+3,
 661                         max_len-3, &buffer_len)) != SEC_E_OK)
 662             {
 663                 cleanup_helper(helper);
 664                 goto isc_end;
 665             }
 666
 667         }
 668
 669         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 670         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 671         {
 672             cleanup_helper(helper);
 673             goto isc_end;
 674         }
 675
 676         TRACE("Helper returned %s\n", debugstr_a(buffer));
 677
 678         if(lstrlenA(want_flags) > 2)
 679         {
 680             TRACE("Want flags are %s\n", debugstr_a(want_flags));
 681             lstrcpynA(buffer, want_flags, max_len-1);
 682             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 683                     != SEC_E_OK)
 684             {
 685                 cleanup_helper(helper);
 686                 goto isc_end;
 687             }
 688             if(!strncmp(buffer, "BH", 2))
 689                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
 690         }
 691
 692         lstrcpynA(buffer, "YR", max_len-1);
 693
 694         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 695         {
 696             cleanup_helper(helper);
 697             goto isc_end;
 698         }
 699
 700         TRACE("%s\n", buffer);
 701
 702         if(strncmp(buffer, "YR ", 3) != 0)
 703         {
 704             /* Something borked */
 705             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 706             ret = SEC_E_INTERNAL_ERROR;
 707             cleanup_helper(helper);
 708             goto isc_end;
 709         }
 710         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 711                         max_len-1, &bin_len)) != SEC_E_OK)
 712         {
 713             cleanup_helper(helper);
 714             goto isc_end;
 715         }
 716
 717         /* put the decoded client blob into the out buffer */
 718
 719         phNewContext->dwUpper = ctxt_attr;
 720         phNewContext->dwLower = (ULONG_PTR)helper;
 721
 722         ret = SEC_I_CONTINUE_NEEDED;
 723     }
 724     else
 725     {
 726         int input_token_idx;
 727
 728         /* handle second call here */
 729         /* encode server data to base64 */
 730         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
 731         {
 732             ret = SEC_E_INVALID_TOKEN;
 733             goto isc_end;
 734         }
 735
 736         if(!phContext)
 737         {
 738             ret = SEC_E_INVALID_HANDLE;
 739             goto isc_end;
 740         }
 741
 742         /* As the server side of sspi never calls this, make sure that
 743          * the handler is a client handler.
 744          */
 745         helper = (PNegoHelper)phContext->dwLower;
 746         if(helper->mode != NTLM_CLIENT)
 747         {
 748             TRACE("Helper mode = %d\n", helper->mode);
 749             ret = SEC_E_INVALID_HANDLE;
 750             goto isc_end;
 751         }
 752
 753         if (!pInput->pBuffers[input_token_idx].pvBuffer)
 754         {
 755             ret = SEC_E_INTERNAL_ERROR;
 756             goto isc_end;
 757         }
 758
 759         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
 760         {
 761             TRACE("pInput->pBuffers[%d].cbBuffer is: %d\n",
 762                     input_token_idx,
 763                     pInput->pBuffers[input_token_idx].cbBuffer);
 764             ret = SEC_E_INVALID_TOKEN;
 765             goto isc_end;
 766         }
 767         else
 768             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
 769
 770         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
 771
 772         lstrcpynA(buffer, "TT ", max_len-1);
 773
 774         if((ret = encodeBase64(bin, bin_len, buffer+3,
 775                         max_len-3, &buffer_len)) != SEC_E_OK)
 776             goto isc_end;
 777
 778         TRACE("Server sent: %s\n", debugstr_a(buffer));
 779
 780         /* send TT base64 blob to ntlm_auth */
 781         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 782             goto isc_end;
 783
 784         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 785
 786         if( (strncmp(buffer, "KK ", 3) != 0) &&
 787                 (strncmp(buffer, "AF ", 3) !=0))
 788         {
 789             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 790             ret = SEC_E_INVALID_TOKEN;
 791             goto isc_end;
 792         }
 793
 794         /* decode the blob and send it to server */
 795         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 796                         &bin_len)) != SEC_E_OK)
 797         {
 798             goto isc_end;
 799         }
 800
 801         phNewContext->dwUpper = ctxt_attr;
 802         phNewContext->dwLower = (ULONG_PTR)helper;
 803
 804         ret = SEC_E_OK;
 805     }
 806
 807     /* put the decoded client blob into the out buffer */
 808
 809     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
 810     {
 811         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
 812         ret = SEC_E_BUFFER_TOO_SMALL;
 813         if ((phContext == NULL) && (pInput == NULL))
 814         {
 815             cleanup_helper(helper);
 816             phNewContext->dwUpper = 0;
 817             phNewContext->dwLower = 0;
 818         }
 819         goto isc_end;
 820     }
 821
 822     if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
 823     {
 824         pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
 825         pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 826     }
 827     else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
 828     {
 829         TRACE("out buffer is NULL or has not enough space\n");
 830         ret = SEC_E_BUFFER_TOO_SMALL;
 831         if ((phContext == NULL) && (pInput == NULL))
 832         {
 833             cleanup_helper(helper);
 834             phNewContext->dwUpper = 0;
 835             phNewContext->dwLower = 0;
 836         }
 837         goto isc_end;
 838     }
 839
 840     if (!pOutput->pBuffers[token_idx].pvBuffer)
 841     {
 842         TRACE("out buffer is NULL\n");
 843         ret = SEC_E_INTERNAL_ERROR;
 844         if ((phContext == NULL) && (pInput == NULL))
 845         {
 846             cleanup_helper(helper);
 847             phNewContext->dwUpper = 0;
 848             phNewContext->dwLower = 0;
 849         }
 850         goto isc_end;
 851     }
 852
 853     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 854     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
 855
 856     if(ret == SEC_E_OK)
 857     {
 858         TRACE("Getting negotiated flags\n");
 859         lstrcpynA(buffer, "GF", max_len - 1);
 860         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 861             goto isc_end;
 862
 863         if(buffer_len < 3)
 864         {
 865             TRACE("No flags negotiated.\n");
 866             helper->neg_flags = 0l;
 867         }
 868         else
 869         {
 870             TRACE("Negotiated %s\n", debugstr_a(buffer));
 871             sscanf(buffer + 3, "%x", &(helper->neg_flags));
 872             TRACE("Stored 0x%08x as flags\n", helper->neg_flags);
 873         }
 874
 875         TRACE("Getting session key\n");
 876         lstrcpynA(buffer, "GK", max_len - 1);
 877         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 878             goto isc_end;
 879
 880         if(strncmp(buffer, "BH", 2) == 0)
 881             TRACE("No key negotiated.\n");
 882         else if(strncmp(buffer, "GK ", 3) == 0)
 883         {
 884             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 885                             &bin_len)) != SEC_E_OK)
 886             {
 887                 TRACE("Failed to decode session key\n");
 888             }
 889             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 890             HeapFree(GetProcessHeap(), 0, helper->session_key);
 891             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 892             if(!helper->session_key)
 893             {
 894                 ret = SEC_E_INSUFFICIENT_MEMORY;
 895                 goto isc_end;
 896             }
 897             memcpy(helper->session_key, bin, bin_len);
 898         }
 899
 900         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 901         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 902         helper->crypt.ntlm.seq_num = 0l;
 903         SECUR32_CreateNTLM2SubKeys(helper);
 904         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
 905         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
 906         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
 907                          helper->crypt.ntlm2.send_seal_key, 16);
 908         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
 909                          helper->crypt.ntlm2.recv_seal_key, 16);
 910         helper->crypt.ntlm2.send_seq_no = 0l;
 911         helper->crypt.ntlm2.recv_seq_no = 0l;
 912     }
 913
 914 isc_end:
 915     HeapFree(GetProcessHeap(), 0, username);
 916     HeapFree(GetProcessHeap(), 0, domain);
 917     HeapFree(GetProcessHeap(), 0, password);
 918     HeapFree(GetProcessHeap(), 0, want_flags);
 919     HeapFree(GetProcessHeap(), 0, buffer);
 920     HeapFree(GetProcessHeap(), 0, bin);
 921     return ret;
 922 }
 923
 924 /***********************************************************************
 925  *              InitializeSecurityContextA
 926  */
 927 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 928  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 929  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 930  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 931  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 932 {
 933     SECURITY_STATUS ret;
 934     SEC_WCHAR *target = NULL;
 935
 936     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 937      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 938      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 939
 940     if(pszTargetName != NULL)
 941     {
 942         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 943             strlen(pszTargetName)+1, NULL, 0);
 944         target = HeapAlloc(GetProcessHeap(), 0, target_size *
 945                 sizeof(SEC_WCHAR));
 946         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 947             target, target_size);
 948     }
 949
 950     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 951             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 952             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 953
 954     HeapFree(GetProcessHeap(), 0, target);
 955     return ret;
 956 }
 957
 958 /***********************************************************************
 959  *              AcceptSecurityContext
 960  */
 961 SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 962  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 963  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 964  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 965 {
 966     SECURITY_STATUS ret;
 967     char *buffer, *want_flags = NULL;
 968     PBYTE bin;
 969     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 970     ULONG ctxt_attr = 0;
 971     PNegoHelper helper;
 972     PNtlmCredentials ntlm_cred;
 973
 974     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 975      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 976      ptsExpiry);
 977
 978     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 979     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 980
 981     if(TargetDataRep == SECURITY_NETWORK_DREP){
 982         TRACE("Using SECURITY_NETWORK_DREP\n");
 983     }
 984
 985     if(phContext == NULL)
 986     {
 987         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
 988         SEC_CHAR *server_argv[] = { ntlm_auth,
 989             server_helper_protocol,
 990             NULL };
 991
 992         if (!phCredential)
 993         {
 994             ret = SEC_E_INVALID_HANDLE;
 995             goto asc_end;
 996         }
 997
 998         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 999
1000         if(ntlm_cred->mode != NTLM_SERVER)
1001         {
1002             ret = SEC_E_INVALID_HANDLE;
1003             goto asc_end;
1004         }
1005
1006         /* This is the first call to AcceptSecurityHandle */
1007         if(pInput == NULL)
1008         {
1009             ret = SEC_E_INCOMPLETE_MESSAGE;
1010             goto asc_end;
1011         }
1012
1013         if(pInput->cBuffers < 1)
1014         {
1015             ret = SEC_E_INCOMPLETE_MESSAGE;
1016             goto asc_end;
1017         }
1018
1019         if(pInput->pBuffers[0].cbBuffer > max_len)
1020         {
1021             ret = SEC_E_INVALID_TOKEN;
1022             goto asc_end;
1023         }
1024         else
1025             bin_len = pInput->pBuffers[0].cbBuffer;
1026
1027         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1028             SEC_E_OK)
1029         {
1030             ret = SEC_E_INTERNAL_ERROR;
1031             goto asc_end;
1032         }
1033         helper->mode = NTLM_SERVER;
1034
1035         /* Handle all the flags */
1036         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1037         if(want_flags == NULL)
1038         {
1039             TRACE("Failed to allocate memory for the want_flags!\n");
1040             ret = SEC_E_INSUFFICIENT_MEMORY;
1041             cleanup_helper(helper);
1042             goto asc_end;
1043         }
1044         lstrcpyA(want_flags, "SF");
1045         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1046         {
1047             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1048         }
1049         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1050         {
1051             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1052         }
1053         if(fContextReq & ASC_REQ_CONNECTION)
1054         {
1055             /* This is default, so we'll enable it */
1056             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1057             ctxt_attr |= ASC_RET_CONNECTION;
1058         }
1059         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1060         {
1061             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1062         }
1063         if(fContextReq & ASC_REQ_INTEGRITY)
1064         {
1065             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1066         }
1067         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1068         {
1069             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1070         }
1071         if(fContextReq & ASC_REQ_REPLAY_DETECT)
1072         {
1073             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1074         }
1075         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1076         {
1077             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1078         }
1079         if(fContextReq & ISC_REQ_STREAM)
1080         {
1081             FIXME("ASC_REQ_STREAM stub\n");
1082         }
1083         /* Done with the flags */
1084
1085         if(lstrlenA(want_flags) > 3)
1086         {
1087             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1088             lstrcpynA(buffer, want_flags, max_len - 1);
1089             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1090                     SEC_E_OK)
1091             {
1092                 cleanup_helper(helper);
1093                 goto asc_end;
1094             }
1095             if(!strncmp(buffer, "BH", 2))
1096                 TRACE("Helper doesn't understand new command set\n");
1097         }
1098
1099         /* This is the YR request from the client, encode to base64 */
1100
1101         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1102
1103         lstrcpynA(buffer, "YR ", max_len-1);
1104
1105         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1106                     &buffer_len)) != SEC_E_OK)
1107         {
1108             cleanup_helper(helper);
1109             goto asc_end;
1110         }
1111
1112         TRACE("Client sent: %s\n", debugstr_a(buffer));
1113
1114         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1115                     SEC_E_OK)
1116         {
1117             cleanup_helper(helper);
1118             goto asc_end;
1119         }
1120
1121         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1122         /* The expected answer is TT <base64 blob> */
1123
1124         if(strncmp(buffer, "TT ", 3) != 0)
1125         {
1126             ret = SEC_E_INTERNAL_ERROR;
1127             cleanup_helper(helper);
1128             goto asc_end;
1129         }
1130
1131         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1132                         &bin_len)) != SEC_E_OK)
1133         {
1134             cleanup_helper(helper);
1135             goto asc_end;
1136         }
1137
1138         /* send this to the client */
1139         if(pOutput == NULL)
1140         {
1141             ret = SEC_E_INSUFFICIENT_MEMORY;
1142             cleanup_helper(helper);
1143             goto asc_end;
1144         }
1145
1146         if(pOutput->cBuffers < 1)
1147         {
1148             ret = SEC_E_INSUFFICIENT_MEMORY;
1149             cleanup_helper(helper);
1150             goto asc_end;
1151         }
1152
1153         pOutput->pBuffers[0].cbBuffer = bin_len;
1154         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1155         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1156         ret = SEC_I_CONTINUE_NEEDED;
1157
1158     }
1159     else
1160     {
1161         /* we expect a KK request from client */
1162         if(pInput == NULL)
1163         {
1164             ret = SEC_E_INCOMPLETE_MESSAGE;
1165             goto asc_end;
1166         }
1167
1168         if(pInput->cBuffers < 1)
1169         {
1170             ret = SEC_E_INCOMPLETE_MESSAGE;
1171             goto asc_end;
1172         }
1173
1174         if(!phContext)
1175         {
1176             ret = SEC_E_INVALID_HANDLE;
1177             goto asc_end;
1178         }
1179
1180         helper = (PNegoHelper)phContext->dwLower;
1181
1182         if(helper->mode != NTLM_SERVER)
1183         {
1184             ret = SEC_E_INVALID_HANDLE;
1185             goto asc_end;
1186         }
1187
1188         if(pInput->pBuffers[0].cbBuffer > max_len)
1189         {
1190             ret = SEC_E_INVALID_TOKEN;
1191             goto asc_end;
1192         }
1193         else
1194             bin_len = pInput->pBuffers[0].cbBuffer;
1195
1196         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1197
1198         lstrcpynA(buffer, "KK ", max_len-1);
1199
1200         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1201                     &buffer_len)) != SEC_E_OK)
1202         {
1203             goto asc_end;
1204         }
1205
1206         TRACE("Client sent: %s\n", debugstr_a(buffer));
1207
1208         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1209                     SEC_E_OK)
1210         {
1211             goto asc_end;
1212         }
1213
1214         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1215
1216         /* At this point, we get a NA if the user didn't authenticate, but a BH
1217          * if ntlm_auth could not connect to winbindd. Apart from running Wine
1218          * as root, there is no way to fix this for now, so just handle this as
1219          * a failed login. */
1220         if(strncmp(buffer, "AF ", 3) != 0)
1221         {
1222             if(strncmp(buffer, "NA ", 3) == 0)
1223             {
1224                 ret = SEC_E_LOGON_DENIED;
1225                 goto asc_end;
1226             }
1227             else
1228             {
1229                 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1230
1231                 if( (buffer_len >= ntlm_pipe_err_len) &&
1232                     (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1233                              ntlm_pipe_err_len) == 0))
1234                 {
1235                     TRACE("Connection to winbindd failed\n");
1236                     ret = SEC_E_LOGON_DENIED;
1237                 }
1238                 else
1239                     ret = SEC_E_INTERNAL_ERROR;
1240
1241                 goto asc_end;
1242             }
1243         }
1244         pOutput->pBuffers[0].cbBuffer = 0;
1245
1246         TRACE("Getting negotiated flags\n");
1247         lstrcpynA(buffer, "GF", max_len - 1);
1248         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1249             goto asc_end;
1250
1251         if(buffer_len < 3)
1252         {
1253             TRACE("No flags negotiated, or helper does not support GF command\n");
1254         }
1255         else
1256         {
1257             TRACE("Negotiated %s\n", debugstr_a(buffer));
1258             sscanf(buffer + 3, "%x", &(helper->neg_flags));
1259             TRACE("Stored 0x%08x as flags\n", helper->neg_flags);
1260         }
1261
1262         TRACE("Getting session key\n");
1263         lstrcpynA(buffer, "GK", max_len - 1);
1264         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1265             goto asc_end;
1266
1267         if(buffer_len < 3)
1268             TRACE("Helper does not support GK command\n");
1269         else
1270         {
1271             if(strncmp(buffer, "BH ", 3) == 0)
1272             {
1273                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1274                 HeapFree(GetProcessHeap(), 0, helper->session_key);
1275                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1276                 if (!helper->session_key)
1277                 {
1278                     ret = SEC_E_INSUFFICIENT_MEMORY;
1279                     goto asc_end;
1280                 }
1281                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1282                 memset(helper->session_key, 0 , 16);
1283             }
1284             else if(strncmp(buffer, "GK ", 3) == 0)
1285             {
1286                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1287                                 &bin_len)) != SEC_E_OK)
1288                 {
1289                     TRACE("Failed to decode session key\n");
1290                 }
1291                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1292                 HeapFree(GetProcessHeap(), 0, helper->session_key);
1293                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1294                 if(!helper->session_key)
1295                 {
1296                     ret = SEC_E_INSUFFICIENT_MEMORY;
1297                     goto asc_end;
1298                 }
1299                 memcpy(helper->session_key, bin, 16);
1300             }
1301         }
1302         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1303         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1304         helper->crypt.ntlm.seq_num = 0l;
1305     }
1306
1307     phNewContext->dwUpper = ctxt_attr;
1308     phNewContext->dwLower = (ULONG_PTR)helper;
1309
1310 asc_end:
1311     HeapFree(GetProcessHeap(), 0, want_flags);
1312     HeapFree(GetProcessHeap(), 0, buffer);
1313     HeapFree(GetProcessHeap(), 0, bin);
1314     return ret;
1315 }
1316
1317 /***********************************************************************
1318  *              CompleteAuthToken
1319  */
1320 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1321  PSecBufferDesc pToken)
1322 {
1323     /* We never need to call CompleteAuthToken anyway */
1324     TRACE("%p %p\n", phContext, pToken);
1325     if (!phContext)
1326         return SEC_E_INVALID_HANDLE;
1327
1328     return SEC_E_OK;
1329 }
1330
1331 /***********************************************************************
1332  *              DeleteSecurityContext
1333  */
1334 SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1335 {
1336     PNegoHelper helper;
1337
1338     TRACE("%p\n", phContext);
1339     if (!phContext)
1340         return SEC_E_INVALID_HANDLE;
1341
1342     helper = (PNegoHelper)phContext->dwLower;
1343
1344     phContext->dwUpper = 0;
1345     phContext->dwLower = 0;
1346
1347     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1348     SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1349     SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1350     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1351     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1352     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1353     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1354
1355     cleanup_helper(helper);
1356
1357     return SEC_E_OK;
1358 }
1359
1360 /***********************************************************************
1361  *              QueryContextAttributesW
1362  */
1363 SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1364  ULONG ulAttribute, void *pBuffer)
1365 {
1366     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1367     if (!phContext)
1368         return SEC_E_INVALID_HANDLE;
1369
1370     switch(ulAttribute)
1371     {
1372 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1373         _x(SECPKG_ATTR_ACCESS_TOKEN);
1374         _x(SECPKG_ATTR_AUTHORITY);
1375         _x(SECPKG_ATTR_DCE_INFO);
1376         case SECPKG_ATTR_FLAGS:
1377         {
1378             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1379             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1380
1381             spcf->Flags = 0;
1382             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1383                 spcf->Flags |= ISC_RET_INTEGRITY;
1384             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1385                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1386             return SEC_E_OK;
1387         }
1388         _x(SECPKG_ATTR_KEY_INFO);
1389         _x(SECPKG_ATTR_LIFESPAN);
1390         _x(SECPKG_ATTR_NAMES);
1391         _x(SECPKG_ATTR_NATIVE_NAMES);
1392         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1393         _x(SECPKG_ATTR_PACKAGE_INFO);
1394         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1395         _x(SECPKG_ATTR_SESSION_KEY);
1396         case SECPKG_ATTR_SIZES:
1397         {
1398             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1399             spcs->cbMaxToken = NTLM_MAX_BUF;
1400             spcs->cbMaxSignature = 16;
1401             spcs->cbBlockSize = 0;
1402             spcs->cbSecurityTrailer = 16;
1403             return SEC_E_OK;
1404         }
1405         _x(SECPKG_ATTR_STREAM_SIZES);
1406         _x(SECPKG_ATTR_TARGET_INFORMATION);
1407 #undef _x
1408         default:
1409             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1410     }
1411
1412     return SEC_E_UNSUPPORTED_FUNCTION;
1413 }
1414
1415 /***********************************************************************
1416  *              QueryContextAttributesA
1417  */
1418 SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1419  ULONG ulAttribute, void *pBuffer)
1420 {
1421     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1422 }
1423
1424 /***********************************************************************
1425  *              ImpersonateSecurityContext
1426  */
1427 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1428 {
1429     SECURITY_STATUS ret;
1430
1431     TRACE("%p\n", phContext);
1432     if (phContext)
1433     {
1434         ret = SEC_E_UNSUPPORTED_FUNCTION;
1435     }
1436     else
1437     {
1438         ret = SEC_E_INVALID_HANDLE;
1439     }
1440     return ret;
1441 }
1442
1443 /***********************************************************************
1444  *              RevertSecurityContext
1445  */
1446 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1447 {
1448     SECURITY_STATUS ret;
1449
1450     TRACE("%p\n", phContext);
1451     if (phContext)
1452     {
1453         ret = SEC_E_UNSUPPORTED_FUNCTION;
1454     }
1455     else
1456     {
1457         ret = SEC_E_INVALID_HANDLE;
1458     }
1459     return ret;
1460 }
1461
1462 /***********************************************************************
1463  *             ntlm_CreateSignature
1464  * As both MakeSignature and VerifySignature need this, but different keys
1465  * are needed for NTLM2, the logic goes into a helper function.
1466  * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1467  * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1468  * the signature is encrypted after the message was encrypted, so
1469  * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1470  * false.
1471  */
1472 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1473         int token_idx, SignDirection direction, BOOL encrypt_sig)
1474 {
1475     ULONG sign_version = 1;
1476     UINT i;
1477     PBYTE sig;
1478     TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1479             encrypt_sig);
1480
1481     sig = pMessage->pBuffers[token_idx].pvBuffer;
1482
1483     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1484             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1485     {
1486         BYTE digest[16];
1487         BYTE seq_no[4];
1488         HMAC_MD5_CTX hmac_md5_ctx;
1489
1490         TRACE("Signing NTLM2 style\n");
1491
1492         if(direction == NTLM_SEND)
1493         {
1494             seq_no[0] = (helper->crypt.ntlm2.send_seq_no >>  0) & 0xff;
1495             seq_no[1] = (helper->crypt.ntlm2.send_seq_no >>  8) & 0xff;
1496             seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1497             seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1498
1499             ++(helper->crypt.ntlm2.send_seq_no);
1500
1501             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1502         }
1503         else
1504         {
1505             seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >>  0) & 0xff;
1506             seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >>  8) & 0xff;
1507             seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1508             seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1509
1510             ++(helper->crypt.ntlm2.recv_seq_no);
1511
1512             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1513         }
1514
1515         HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1516         for( i = 0; i < pMessage->cBuffers; ++i )
1517         {
1518             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1519                 HMACMD5Update(&hmac_md5_ctx, pMessage->pBuffers[i].pvBuffer,
1520                         pMessage->pBuffers[i].cbBuffer);
1521         }
1522
1523         HMACMD5Final(&hmac_md5_ctx, digest);
1524
1525         if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1526         {
1527             if(direction == NTLM_SEND)
1528                 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1529             else
1530                 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1531         }
1532
1533         /* The NTLM2 signature is the sign version */
1534         sig[ 0] = (sign_version >>  0) & 0xff;
1535         sig[ 1] = (sign_version >>  8) & 0xff;
1536         sig[ 2] = (sign_version >> 16) & 0xff;
1537         sig[ 3] = (sign_version >> 24) & 0xff;
1538         /* The first 8 bytes of the digest */
1539         memcpy(sig+4, digest, 8);
1540         /* And the sequence number */
1541         memcpy(sig+12, seq_no, 4);
1542
1543         pMessage->pBuffers[token_idx].cbBuffer = 16;
1544
1545         return SEC_E_OK;
1546     }
1547     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1548     {
1549         ULONG crc = 0U;
1550         TRACE("Signing NTLM1 style\n");
1551
1552         for(i=0; i < pMessage->cBuffers; ++i)
1553         {
1554             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1555             {
1556                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1557                     pMessage->pBuffers[i].cbBuffer, crc);
1558             }
1559         }
1560
1561         sig[ 0] = (sign_version >>  0) & 0xff;
1562         sig[ 1] = (sign_version >>  8) & 0xff;
1563         sig[ 2] = (sign_version >> 16) & 0xff;
1564         sig[ 3] = (sign_version >> 24) & 0xff;
1565         memset(sig+4, 0, 4);
1566         sig[ 8] = (crc >>  0) & 0xff;
1567         sig[ 9] = (crc >>  8) & 0xff;
1568         sig[10] = (crc >> 16) & 0xff;
1569         sig[11] = (crc >> 24) & 0xff;
1570         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1571         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1572         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1573         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1574
1575         ++(helper->crypt.ntlm.seq_num);
1576
1577         if(encrypt_sig)
1578             SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1579         return SEC_E_OK;
1580     }
1581
1582     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1583     {
1584         TRACE("Creating a dummy signature.\n");
1585         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1586         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1587         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1588         pMessage->pBuffers[token_idx].cbBuffer = 16;
1589         return SEC_E_OK;
1590     }
1591
1592     return SEC_E_UNSUPPORTED_FUNCTION;
1593 }
1594
1595 /***********************************************************************
1596  *              MakeSignature
1597  */
1598 SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext,
1599     ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1600 {
1601     PNegoHelper helper;
1602     int token_idx;
1603
1604     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1605     if (!phContext)
1606         return SEC_E_INVALID_HANDLE;
1607
1608     if(fQOP)
1609         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1610
1611     if(MessageSeqNo)
1612         FIXME("Ignoring MessageSeqNo\n");
1613
1614     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1615         return SEC_E_INVALID_TOKEN;
1616
1617     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1618     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1619         return SEC_E_INVALID_TOKEN;
1620
1621     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1622         return SEC_E_BUFFER_TOO_SMALL;
1623
1624     helper = (PNegoHelper)phContext->dwLower;
1625     TRACE("Negotiated flags are: 0x%08x\n", helper->neg_flags);
1626
1627     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1628 }
1629
1630 /***********************************************************************
1631  *              VerifySignature
1632  */
1633 SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1634     PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1635 {
1636     PNegoHelper helper;
1637     ULONG fQOP = 0;
1638     UINT i;
1639     int token_idx;
1640     SECURITY_STATUS ret;
1641     SecBufferDesc local_desc;
1642     PSecBuffer     local_buff;
1643     BYTE          local_sig[16];
1644
1645     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1646     if(!phContext)
1647         return SEC_E_INVALID_HANDLE;
1648
1649     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1650         return SEC_E_INVALID_TOKEN;
1651
1652     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1653         return SEC_E_INVALID_TOKEN;
1654
1655     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1656         return SEC_E_BUFFER_TOO_SMALL;
1657
1658     if(MessageSeqNo)
1659         FIXME("Ignoring MessageSeqNo\n");
1660
1661     helper = (PNegoHelper)phContext->dwLower;
1662     TRACE("Negotiated flags: 0x%08x\n", helper->neg_flags);
1663
1664     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1665
1666     local_desc.ulVersion = SECBUFFER_VERSION;
1667     local_desc.cBuffers = pMessage->cBuffers;
1668     local_desc.pBuffers = local_buff;
1669
1670     for(i=0; i < pMessage->cBuffers; ++i)
1671     {
1672         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1673         {
1674             local_buff[i].BufferType = SECBUFFER_TOKEN;
1675             local_buff[i].cbBuffer = 16;
1676             local_buff[i].pvBuffer = local_sig;
1677         }
1678         else
1679         {
1680             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1681             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1682             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1683         }
1684     }
1685
1686     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1687         return ret;
1688
1689     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1690                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1691         ret = SEC_E_MESSAGE_ALTERED;
1692     else
1693         ret = SEC_E_OK;
1694
1695     HeapFree(GetProcessHeap(), 0, local_buff);
1696     pfQOP = &fQOP;
1697
1698     return ret;
1699
1700 }
1701
1702 /***********************************************************************
1703  *             FreeCredentialsHandle
1704  */
1705 SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(PCredHandle phCredential)
1706 {
1707     SECURITY_STATUS ret;
1708
1709     if(phCredential){
1710         PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1711         phCredential->dwUpper = 0;
1712         phCredential->dwLower = 0;
1713         if (ntlm_cred->password)
1714             memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1715         HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1716         HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1717         HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1718         HeapFree(GetProcessHeap(), 0, ntlm_cred);
1719         ret = SEC_E_OK;
1720     }
1721     else
1722         ret = SEC_E_OK;
1723
1724     return ret;
1725 }
1726
1727 /***********************************************************************
1728  *             EncryptMessage
1729  */
1730 SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1731     ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1732 {
1733     PNegoHelper helper;
1734     int token_idx, data_idx;
1735
1736     TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1737
1738     if(!phContext)
1739         return SEC_E_INVALID_HANDLE;
1740
1741     if(fQOP)
1742         FIXME("Ignoring fQOP\n");
1743
1744     if(MessageSeqNo)
1745         FIXME("Ignoring MessageSeqNo\n");
1746
1747     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1748         return SEC_E_INVALID_TOKEN;
1749
1750     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1751         return SEC_E_INVALID_TOKEN;
1752
1753     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
1754         return SEC_E_INVALID_TOKEN;
1755
1756     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1757         return SEC_E_BUFFER_TOO_SMALL;
1758
1759     helper = (PNegoHelper) phContext->dwLower;
1760
1761     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1762             helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1763     {
1764         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1765         SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1766                 pMessage->pBuffers[data_idx].pvBuffer,
1767                 pMessage->pBuffers[data_idx].cbBuffer);
1768
1769         if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1770             SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1771                     ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1772     }
1773     else
1774     {
1775         PBYTE sig;
1776         ULONG save_flags;
1777
1778         /* EncryptMessage always produces real signatures, so make sure
1779          * NTLMSSP_NEGOTIATE_SIGN is set*/
1780         save_flags = helper->neg_flags;
1781         helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1782         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1783         helper->neg_flags = save_flags;
1784
1785         sig = pMessage->pBuffers[token_idx].pvBuffer;
1786
1787         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1788                 pMessage->pBuffers[data_idx].pvBuffer,
1789                 pMessage->pBuffers[data_idx].cbBuffer);
1790         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1791
1792         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1793             memset(sig+4, 0, 4);
1794     }
1795     return SEC_E_OK;
1796 }
1797
1798 /***********************************************************************
1799  *             DecryptMessage
1800  */
1801 SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1802     PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1803 {
1804     SECURITY_STATUS ret;
1805     ULONG ntlmssp_flags_save;
1806     PNegoHelper helper;
1807     int token_idx, data_idx;
1808     TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1809
1810     if(!phContext)
1811         return SEC_E_INVALID_HANDLE;
1812
1813     if(MessageSeqNo)
1814         FIXME("Ignoring MessageSeqNo\n");
1815
1816     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1817         return SEC_E_INVALID_TOKEN;
1818
1819     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1820         return SEC_E_INVALID_TOKEN;
1821
1822     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
1823         return SEC_E_INVALID_TOKEN;
1824
1825     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1826         return SEC_E_BUFFER_TOO_SMALL;
1827
1828     helper = (PNegoHelper) phContext->dwLower;
1829
1830     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1831     {
1832         SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1833                 pMessage->pBuffers[data_idx].pvBuffer,
1834                 pMessage->pBuffers[data_idx].cbBuffer);
1835     }
1836     else
1837     {
1838         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1839                 pMessage->pBuffers[data_idx].pvBuffer,
1840                 pMessage->pBuffers[data_idx].cbBuffer);
1841     }
1842
1843     /* Make sure we use a session key for the signature check, EncryptMessage
1844      * always does that, even in the dummy case */
1845     ntlmssp_flags_save = helper->neg_flags;
1846
1847     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1848     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1849
1850     helper->neg_flags = ntlmssp_flags_save;
1851
1852     return ret;
1853 }
1854
1855 static const SecurityFunctionTableA ntlmTableA = {
1856     1,
1857     NULL,   /* EnumerateSecurityPackagesA */
1858     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1859     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1860     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1861     NULL,   /* Reserved2 */
1862     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1863     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1864     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1865     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1866     NULL,  /* ApplyControlToken */
1867     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1868     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1869     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1870     ntlm_MakeSignature,                 /* MakeSignature */
1871     ntlm_VerifySignature,               /* VerifySignature */
1872     FreeContextBuffer,                  /* FreeContextBuffer */
1873     NULL,   /* QuerySecurityPackageInfoA */
1874     NULL,   /* Reserved3 */
1875     NULL,   /* Reserved4 */
1876     NULL,   /* ExportSecurityContext */
1877     NULL,   /* ImportSecurityContextA */
1878     NULL,   /* AddCredentialsA */
1879     NULL,   /* Reserved8 */
1880     NULL,   /* QuerySecurityContextToken */
1881     ntlm_EncryptMessage,                /* EncryptMessage */
1882     ntlm_DecryptMessage,                /* DecryptMessage */
1883     NULL,   /* SetContextAttributesA */
1884 };
1885
1886 static const SecurityFunctionTableW ntlmTableW = {
1887     1,
1888     NULL,   /* EnumerateSecurityPackagesW */
1889     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1890     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1891     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1892     NULL,   /* Reserved2 */
1893     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1894     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1895     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1896     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1897     NULL,  /* ApplyControlToken */
1898     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1899     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1900     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1901     ntlm_MakeSignature,                 /* MakeSignature */
1902     ntlm_VerifySignature,               /* VerifySignature */
1903     FreeContextBuffer,                  /* FreeContextBuffer */
1904     NULL,   /* QuerySecurityPackageInfoW */
1905     NULL,   /* Reserved3 */
1906     NULL,   /* Reserved4 */
1907     NULL,   /* ExportSecurityContext */
1908     NULL,   /* ImportSecurityContextW */
1909     NULL,   /* AddCredentialsW */
1910     NULL,   /* Reserved8 */
1911     NULL,   /* QuerySecurityContextToken */
1912     ntlm_EncryptMessage,                /* EncryptMessage */
1913     ntlm_DecryptMessage,                /* DecryptMessage */
1914     NULL,   /* SetContextAttributesW */
1915 };
1916
1917 #define NTLM_COMMENT \
1918    { 'N', 'T', 'L', 'M', ' ', \
1919      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1920      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1921
1922 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1923 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1924
1925 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1926
1927 static char ntlm_name_A[] = NTLM_NAME;
1928 static WCHAR ntlm_name_W[] = NTLM_NAME;
1929
1930 /* According to Windows, NTLM has the following capabilities.  */
1931 #define CAPS ( \
1932     SECPKG_FLAG_INTEGRITY  | \
1933     SECPKG_FLAG_PRIVACY    | \
1934     SECPKG_FLAG_TOKEN_ONLY | \
1935     SECPKG_FLAG_CONNECTION | \
1936     SECPKG_FLAG_MULTI_REQUIRED    | \
1937     SECPKG_FLAG_IMPERSONATION     | \
1938     SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1939     SECPKG_FLAG_NEGOTIABLE        | \
1940     SECPKG_FLAG_LOGON             | \
1941     SECPKG_FLAG_RESTRICTED_TOKENS )
1942
1943 static const SecPkgInfoW infoW = {
1944     CAPS,
1945     1,
1946     RPC_C_AUTHN_WINNT,
1947     NTLM_MAX_BUF,
1948     ntlm_name_W,
1949     ntlm_comment_W
1950 };
1951
1952 static const SecPkgInfoA infoA = {
1953     CAPS,
1954     1,
1955     RPC_C_AUTHN_WINNT,
1956     NTLM_MAX_BUF,
1957     ntlm_name_A,
1958     ntlm_comment_A
1959 };
1960
1961 SecPkgInfoA *ntlm_package_infoA = (SecPkgInfoA *)&infoA;
1962 SecPkgInfoW *ntlm_package_infoW = (SecPkgInfoW *)&infoW;
1963
1964 void SECUR32_initNTLMSP(void)
1965 {
1966     PNegoHelper helper;
1967     static CHAR version[] = "--version";
1968
1969     SEC_CHAR *args[] = {
1970         ntlm_auth,
1971         version,
1972         NULL };
1973
1974     if(fork_helper(&helper, ntlm_auth, args) != SEC_E_OK)
1975         helper = NULL;
1976     else
1977         check_version(helper);
1978
1979     if( helper &&
1980         ((helper->major >  MIN_NTLM_AUTH_MAJOR_VERSION) ||
1981          (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1982           helper->minor >  MIN_NTLM_AUTH_MINOR_VERSION) ||
1983          (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1984           helper->minor == MIN_NTLM_AUTH_MINOR_VERSION  &&
1985           helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION)) )
1986     {
1987         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
1988         SECUR32_addPackages(provider, 1L, ntlm_package_infoA, ntlm_package_infoW);
1989     }
1990     else
1991     {
1992         ERR_(winediag)("%s was not found or is outdated. "
1993                        "Make sure that ntlm_auth >= %d.%d.%d is in your path. "
1994                        "Usually, you can find it in the winbind package of your distribution.\n",
1995                        ntlm_auth,
1996                        MIN_NTLM_AUTH_MAJOR_VERSION,
1997                        MIN_NTLM_AUTH_MINOR_VERSION,
1998                        MIN_NTLM_AUTH_MICRO_VERSION);
1999
2000     }
2001     cleanup_helper(helper);
2002 }