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
  38 #define NTLM_MAX_BUF 1904
  39 #define MIN_NTLM_AUTH_MAJOR_VERSION 3
  40 #define MIN_NTLM_AUTH_MINOR_VERSION 0
  41 #define MIN_NTLM_AUTH_MICRO_VERSION 25
  42
  43 static CHAR ntlm_auth[] = "ntlm_auth";
  44
  45 typedef struct _NtlmCredentials
  46 {
  47     HelperMode mode;
  48
  49     /* these are all in the Unix codepage */
  50     char *username_arg;
  51     char *domain_arg;
  52     char *password; /* not nul-terminated */
  53     int pwlen;
  54 } NtlmCredentials, *PNtlmCredentials;
  55
  56 /***********************************************************************
  57  *              QueryCredentialsAttributesA
  58  */
  59 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
  60         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  61 {
  62     SECURITY_STATUS ret;
  63
  64     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  65
  66     if(ulAttribute == SECPKG_ATTR_NAMES)
  67     {
  68         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  69         ret = SEC_E_UNSUPPORTED_FUNCTION;
  70     }
  71     else
  72         ret = SEC_E_UNSUPPORTED_FUNCTION;
  73
  74     return ret;
  75 }
  76
  77 /***********************************************************************
  78  *              QueryCredentialsAttributesW
  79  */
  80 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
  81         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  82 {
  83     SECURITY_STATUS ret;
  84
  85     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  86
  87     if(ulAttribute == SECPKG_ATTR_NAMES)
  88     {
  89         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  90         ret = SEC_E_UNSUPPORTED_FUNCTION;
  91     }
  92     else
  93         ret = SEC_E_UNSUPPORTED_FUNCTION;
  94
  95     return ret;
  96 }
  97
  98 static char *ntlm_GetUsernameArg(LPCWSTR userW, INT userW_length)
  99 {
 100     static const char username_arg[] = "--username=";
 101     char *user;
 102     int unixcp_size;
 103
 104     unixcp_size =  WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 105         userW, userW_length, NULL, 0, NULL, NULL) + sizeof(username_arg);
 106     user = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 107     if (!user) return NULL;
 108     memcpy(user, username_arg, sizeof(username_arg) - 1);
 109     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, userW, userW_length,
 110         user + sizeof(username_arg) - 1,
 111         unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
 112     user[unixcp_size - 1] = '\0';
 113     return user;
 114 }
 115
 116 static char *ntlm_GetDomainArg(LPCWSTR domainW, INT domainW_length)
 117 {
 118     static const char domain_arg[] = "--domain=";
 119     char *domain;
 120     int unixcp_size;
 121
 122     unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 123         domainW, domainW_length, NULL, 0,  NULL, NULL) + sizeof(domain_arg);
 124     domain = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 125     if (!domain) return NULL;
 126     memcpy(domain, domain_arg, sizeof(domain_arg) - 1);
 127     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domainW,
 128         domainW_length, domain + sizeof(domain_arg) - 1,
 129         unixcp_size - sizeof(domain) + 1, NULL, NULL);
 130     domain[unixcp_size - 1] = '\0';
 131     return domain;
 132 }
 133
 134 /***********************************************************************
 135  *              AcquireCredentialsHandleW
 136  */
 137 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
 138  SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
 139  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 140  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 141 {
 142     SECURITY_STATUS ret;
 143     PNtlmCredentials ntlm_cred = NULL;
 144     SEC_WCHAR *username = NULL, *domain = NULL;
 145
 146     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 147      debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
 148      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 149
 150     switch(fCredentialUse)
 151     {
 152         case SECPKG_CRED_INBOUND:
 153             ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 154             if (!ntlm_cred)
 155                 ret = SEC_E_INSUFFICIENT_MEMORY;
 156             else
 157             {
 158                 ntlm_cred->mode = NTLM_SERVER;
 159                 ntlm_cred->username_arg = NULL;
 160                 ntlm_cred->domain_arg = NULL;
 161                 ntlm_cred->password = NULL;
 162                 ntlm_cred->pwlen = 0;
 163                 phCredential->dwUpper = fCredentialUse;
 164                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 165                 ret = SEC_E_OK;
 166             }
 167             break;
 168         case SECPKG_CRED_OUTBOUND:
 169             {
 170                 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 171                 if (!ntlm_cred)
 172                 {
 173                     ret = SEC_E_INSUFFICIENT_MEMORY;
 174                     break;
 175                 }
 176                 ntlm_cred->mode = NTLM_CLIENT;
 177                 ntlm_cred->username_arg = NULL;
 178                 ntlm_cred->domain_arg = NULL;
 179                 ntlm_cred->password = NULL;
 180                 ntlm_cred->pwlen = 0;
 181
 182                 if(pAuthData != NULL)
 183                 {
 184                     PSEC_WINNT_AUTH_IDENTITY_W auth_data = pAuthData;
 185
 186                     TRACE("Username is %s\n", debugstr_wn(auth_data->User, auth_data->UserLength));
 187                     TRACE("Domain name is %s\n", debugstr_wn(auth_data->Domain, auth_data->DomainLength));
 188
 189                     ntlm_cred->username_arg = ntlm_GetUsernameArg(auth_data->User, auth_data->UserLength);
 190                     ntlm_cred->domain_arg = ntlm_GetDomainArg(auth_data->Domain, auth_data->DomainLength);
 191
 192                     if(auth_data->PasswordLength != 0)
 193                     {
 194                         ntlm_cred->pwlen = WideCharToMultiByte(CP_UNIXCP,
 195                                                                WC_NO_BEST_FIT_CHARS, auth_data->Password,
 196                                                                auth_data->PasswordLength, NULL, 0, NULL,
 197                                                                NULL);
 198
 199                         ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
 200                                                         ntlm_cred->pwlen);
 201
 202                         WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 203                                             auth_data->Password, auth_data->PasswordLength,
 204                                             ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
 205                     }
 206                 }
 207
 208                 phCredential->dwUpper = fCredentialUse;
 209                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 210                 TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
 211                       phCredential->dwUpper, phCredential->dwLower);
 212                 ret = SEC_E_OK;
 213                 break;
 214             }
 215         case SECPKG_CRED_BOTH:
 216             FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
 217             ret = SEC_E_UNSUPPORTED_FUNCTION;
 218             phCredential = NULL;
 219             break;
 220         default:
 221             phCredential = NULL;
 222             ret = SEC_E_UNKNOWN_CREDENTIALS;
 223     }
 224
 225     HeapFree(GetProcessHeap(), 0, username);
 226     HeapFree(GetProcessHeap(), 0, domain);
 227
 228     return ret;
 229 }
 230
 231 /***********************************************************************
 232  *              AcquireCredentialsHandleA
 233  */
 234 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
 235  SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
 236  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 237  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 238 {
 239     SECURITY_STATUS ret;
 240     int user_sizeW, domain_sizeW, passwd_sizeW;
 241
 242     SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
 243
 244     PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
 245     PSEC_WINNT_AUTH_IDENTITY_A identity  = NULL;
 246
 247     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 248      debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
 249      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 250
 251     if(pszPackage != NULL)
 252     {
 253         int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
 254                 NULL, 0);
 255
 256         package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
 257                 sizeof(SEC_WCHAR));
 258         MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
 259     }
 260
 261
 262     if(pAuthData != NULL)
 263     {
 264         identity = pAuthData;
 265
 266         if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
 267         {
 268             pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
 269                     sizeof(SEC_WINNT_AUTH_IDENTITY_W));
 270
 271             if(identity->UserLength != 0)
 272             {
 273                 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
 274                     (LPCSTR)identity->User, identity->UserLength, NULL, 0);
 275                 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
 276                         sizeof(SEC_WCHAR));
 277                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
 278                     identity->UserLength, user, user_sizeW);
 279             }
 280             else
 281             {
 282                 user_sizeW = 0;
 283             }
 284
 285             if(identity->DomainLength != 0)
 286             {
 287                 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
 288                     (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
 289                 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
 290                     * sizeof(SEC_WCHAR));
 291                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
 292                     identity->DomainLength, domain, domain_sizeW);
 293             }
 294             else
 295             {
 296                 domain_sizeW = 0;
 297             }
 298
 299             if(identity->PasswordLength != 0)
 300             {
 301                 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
 302                     (LPCSTR)identity->Password, identity->PasswordLength,
 303                     NULL, 0);
 304                 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
 305                     * sizeof(SEC_WCHAR));
 306                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
 307                     identity->PasswordLength, passwd, passwd_sizeW);
 308             }
 309             else
 310             {
 311                 passwd_sizeW = 0;
 312             }
 313
 314             pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
 315             pAuthDataW->User = user;
 316             pAuthDataW->UserLength = user_sizeW;
 317             pAuthDataW->Domain = domain;
 318             pAuthDataW->DomainLength = domain_sizeW;
 319             pAuthDataW->Password = passwd;
 320             pAuthDataW->PasswordLength = passwd_sizeW;
 321         }
 322         else
 323         {
 324             pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
 325         }
 326     }
 327
 328     ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
 329             pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
 330             ptsExpiry);
 331
 332     HeapFree(GetProcessHeap(), 0, package);
 333     HeapFree(GetProcessHeap(), 0, user);
 334     HeapFree(GetProcessHeap(), 0, domain);
 335     HeapFree(GetProcessHeap(), 0, passwd);
 336     if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
 337         HeapFree(GetProcessHeap(), 0, pAuthDataW);
 338
 339     return ret;
 340 }
 341
 342 /*************************************************************************
 343  *             ntlm_GetTokenBufferIndex
 344  * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
 345  * Returns index if found or -1 if not found.
 346  */
 347 static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
 348 {
 349     UINT i;
 350
 351     TRACE("%p\n", pMessage);
 352
 353     for( i = 0; i < pMessage->cBuffers; ++i )
 354     {
 355         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
 356             return i;
 357     }
 358
 359     return -1;
 360 }
 361
 362 /*************************************************************************
 363  *             ntlm_GetDataBufferIndex
 364  * Calculates the index of the first secbuffer with BufferType == SECBUFFER_DATA
 365  * Returns index if found or -1 if not found.
 366  */
 367 static int ntlm_GetDataBufferIndex(PSecBufferDesc pMessage)
 368 {
 369     UINT i;
 370
 371     TRACE("%p\n", pMessage);
 372
 373     for( i = 0; i < pMessage->cBuffers; ++i )
 374     {
 375         if(pMessage->pBuffers[i].BufferType == SECBUFFER_DATA)
 376             return i;
 377     }
 378
 379     return -1;
 380 }
 381
 382 static BOOL ntlm_GetCachedCredential(const SEC_WCHAR *pszTargetName, PCREDENTIALW *cred)
 383 {
 384     LPCWSTR p;
 385     LPCWSTR pszHost;
 386     LPWSTR pszHostOnly;
 387     BOOL ret;
 388
 389     if (!pszTargetName)
 390         return FALSE;
 391
 392     /* try to get the start of the hostname from service principal name (SPN) */
 393     pszHost = strchrW(pszTargetName, '/');
 394     if (pszHost)
 395     {
 396         /* skip slash character */
 397         pszHost++;
 398
 399         /* find end of host by detecting start of instance port or start of referrer */
 400         p = strchrW(pszHost, ':');
 401         if (!p)
 402             p = strchrW(pszHost, '/');
 403         if (!p)
 404             p = pszHost + strlenW(pszHost);
 405     }
 406     else /* otherwise not an SPN, just a host */
 407     {
 408         pszHost = pszTargetName;
 409         p = pszHost + strlenW(pszHost);
 410     }
 411
 412     pszHostOnly = HeapAlloc(GetProcessHeap(), 0, (p - pszHost + 1) * sizeof(WCHAR));
 413     if (!pszHostOnly)
 414         return FALSE;
 415
 416     memcpy(pszHostOnly, pszHost, (p - pszHost) * sizeof(WCHAR));
 417     pszHostOnly[p - pszHost] = '\0';
 418
 419     ret = CredReadW(pszHostOnly, CRED_TYPE_DOMAIN_PASSWORD, 0, cred);
 420
 421     HeapFree(GetProcessHeap(), 0, pszHostOnly);
 422     return ret;
 423 }
 424
 425 /***********************************************************************
 426  *              InitializeSecurityContextW
 427  */
 428 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
 429  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 430  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 431  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 432  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 433 {
 434     SECURITY_STATUS ret;
 435     PNtlmCredentials ntlm_cred = NULL;
 436     PNegoHelper helper = NULL;
 437     ULONG ctxt_attr = 0;
 438     char* buffer, *want_flags = NULL;
 439     PBYTE bin;
 440     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 441     int token_idx;
 442     SEC_CHAR *username = NULL;
 443     SEC_CHAR *domain = NULL;
 444     SEC_CHAR *password = NULL;
 445
 446     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 447      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 448      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 449
 450     /****************************************
 451      * When communicating with the client, there can be the
 452      * following reply packets:
 453      * YR <base64 blob>         should be sent to the server
 454      * PW                       should be sent back to helper with
 455      *                          base64 encoded password
 456      * AF <base64 blob>         client is done, blob should be
 457      *                          sent to server with KK prefixed
 458      * GF <string list>         A string list of negotiated flags
 459      * GK <base64 blob>         base64 encoded session key
 460      * BH <char reason>         something broke
 461      */
 462     /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
 463
 464     if(TargetDataRep == SECURITY_NETWORK_DREP){
 465         TRACE("Setting SECURITY_NETWORK_DREP\n");
 466     }
 467
 468     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 469     bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
 470
 471     if((phContext == NULL) && (pInput == NULL))
 472     {
 473         static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
 474         static CHAR credentials_argv[] = "--use-cached-creds";
 475         SEC_CHAR *client_argv[5];
 476         int pwlen = 0;
 477
 478         TRACE("First time in ISC()\n");
 479
 480         if(!phCredential)
 481         {
 482             ret = SEC_E_INVALID_HANDLE;
 483             goto isc_end;
 484         }
 485
 486         /* As the server side of sspi never calls this, make sure that
 487          * the handler is a client handler.
 488          */
 489         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 490         if(ntlm_cred->mode != NTLM_CLIENT)
 491         {
 492             TRACE("Cred mode = %d\n", ntlm_cred->mode);
 493             ret = SEC_E_INVALID_HANDLE;
 494             goto isc_end;
 495         }
 496
 497         client_argv[0] = ntlm_auth;
 498         client_argv[1] = helper_protocol;
 499         if (!ntlm_cred->username_arg && !ntlm_cred->domain_arg)
 500         {
 501             LPWKSTA_USER_INFO_1 ui = NULL;
 502             NET_API_STATUS status;
 503             PCREDENTIALW cred;
 504
 505             if (ntlm_GetCachedCredential(pszTargetName, &cred))
 506             {
 507                 LPWSTR p;
 508                 p = strchrW(cred->UserName, '\\');
 509                 if (p)
 510                 {
 511                     domain = ntlm_GetDomainArg(cred->UserName, p - cred->UserName);
 512                     p++;
 513                 }
 514                 else
 515                 {
 516                     domain = ntlm_GetDomainArg(NULL, 0);
 517                     p = cred->UserName;
 518                 }
 519
 520                 username = ntlm_GetUsernameArg(p, -1);
 521
 522                 if(cred->CredentialBlobSize != 0)
 523                 {
 524                     pwlen = WideCharToMultiByte(CP_UNIXCP,
 525                         WC_NO_BEST_FIT_CHARS, (LPWSTR)cred->CredentialBlob,
 526                         cred->CredentialBlobSize / sizeof(WCHAR), NULL, 0,
 527                         NULL, NULL);
 528
 529                     password = HeapAlloc(GetProcessHeap(), 0, pwlen);
 530
 531                     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 532                                         (LPWSTR)cred->CredentialBlob,
 533                                         cred->CredentialBlobSize / sizeof(WCHAR),
 534                                         password, pwlen, NULL, NULL);
 535                 }
 536
 537                 CredFree(cred);
 538
 539                 client_argv[2] = username;
 540                 client_argv[3] = domain;
 541                 client_argv[4] = NULL;
 542             }
 543             else
 544             {
 545                 status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
 546                 if (status != NERR_Success || ui == NULL)
 547                 {
 548                     ret = SEC_E_NO_CREDENTIALS;
 549                     goto isc_end;
 550                 }
 551                 username = ntlm_GetUsernameArg(ui->wkui1_username, -1);
 552
 553                 TRACE("using cached credentials\n");
 554
 555                 client_argv[2] = username;
 556                 client_argv[3] = credentials_argv;
 557                 client_argv[4] = NULL;
 558             }
 559         }
 560         else
 561         {
 562             client_argv[2] = ntlm_cred->username_arg;
 563             client_argv[3] = ntlm_cred->domain_arg;
 564             client_argv[4] = NULL;
 565         }
 566
 567         if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
 568             goto isc_end;
 569
 570         helper->mode = NTLM_CLIENT;
 571         helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 572         if (!helper->session_key)
 573         {
 574             cleanup_helper(helper);
 575             ret = SEC_E_INSUFFICIENT_MEMORY;
 576             goto isc_end;
 577         }
 578
 579         /* Generate the dummy session key = MD4(MD4(password))*/
 580         if(password || ntlm_cred->password)
 581         {
 582             SEC_WCHAR *unicode_password;
 583             int passwd_lenW;
 584
 585             TRACE("Converting password to unicode.\n");
 586             passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 587                                               password ? password : ntlm_cred->password,
 588                                               password ? pwlen : ntlm_cred->pwlen,
 589                                               NULL, 0);
 590             unicode_password = HeapAlloc(GetProcessHeap(), 0,
 591                                          passwd_lenW * sizeof(SEC_WCHAR));
 592             MultiByteToWideChar(CP_ACP, 0, password ? password : ntlm_cred->password,
 593                                 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
 594
 595             SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
 596                                            passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
 597
 598             HeapFree(GetProcessHeap(), 0, unicode_password);
 599         }
 600         else
 601             memset(helper->session_key, 0, 16);
 602
 603         /* Allocate space for a maximal string of
 604          * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
 605          * NTLMSSP_FEATURE_SESSION_KEY"
 606          */
 607         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 608         if(want_flags == NULL)
 609         {
 610             cleanup_helper(helper);
 611             ret = SEC_E_INSUFFICIENT_MEMORY;
 612             goto isc_end;
 613         }
 614         lstrcpyA(want_flags, "SF");
 615         if(fContextReq & ISC_REQ_CONFIDENTIALITY)
 616         {
 617             if(strstr(want_flags, "NTLMSSP_FEATURE_SEAL") == NULL)
 618                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 619         }
 620         if(fContextReq & ISC_REQ_CONNECTION)
 621             ctxt_attr |= ISC_RET_CONNECTION;
 622         if(fContextReq & ISC_REQ_EXTENDED_ERROR)
 623             ctxt_attr |= ISC_RET_EXTENDED_ERROR;
 624         if(fContextReq & ISC_REQ_INTEGRITY)
 625         {
 626             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 627                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 628         }
 629         if(fContextReq & ISC_REQ_MUTUAL_AUTH)
 630             ctxt_attr |= ISC_RET_MUTUAL_AUTH;
 631         if(fContextReq & ISC_REQ_REPLAY_DETECT)
 632         {
 633             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 634                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 635         }
 636         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 637         {
 638             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 639                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 640         }
 641         if(fContextReq & ISC_REQ_STREAM)
 642             FIXME("ISC_REQ_STREAM\n");
 643         if(fContextReq & ISC_REQ_USE_DCE_STYLE)
 644             ctxt_attr |= ISC_RET_USED_DCE_STYLE;
 645         if(fContextReq & ISC_REQ_DELEGATE)
 646             ctxt_attr |= ISC_RET_DELEGATE;
 647
 648         /* If no password is given, try to use cached credentials. Fall back to an empty
 649          * password if this failed. */
 650         if(!password && !ntlm_cred->password)
 651         {
 652             lstrcpynA(buffer, "OK", max_len-1);
 653             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 654             {
 655                 cleanup_helper(helper);
 656                 goto isc_end;
 657             }
 658             /* If the helper replied with "PW", using cached credentials failed */
 659             if(!strncmp(buffer, "PW", 2))
 660             {
 661                 TRACE("Using cached credentials failed.\n");
 662                 lstrcpynA(buffer, "PW AA==", max_len-1);
 663             }
 664             else /* Just do a noop on the next run */
 665                 lstrcpynA(buffer, "OK", max_len-1);
 666         }
 667         else
 668         {
 669             lstrcpynA(buffer, "PW ", max_len-1);
 670             if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
 671                         password ? pwlen : ntlm_cred->pwlen, buffer+3,
 672                         max_len-3, &buffer_len)) != SEC_E_OK)
 673             {
 674                 cleanup_helper(helper);
 675                 goto isc_end;
 676             }
 677
 678         }
 679
 680         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 681         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 682         {
 683             cleanup_helper(helper);
 684             goto isc_end;
 685         }
 686
 687         TRACE("Helper returned %s\n", debugstr_a(buffer));
 688
 689         if(lstrlenA(want_flags) > 2)
 690         {
 691             TRACE("Want flags are %s\n", debugstr_a(want_flags));
 692             lstrcpynA(buffer, want_flags, max_len-1);
 693             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 694                     != SEC_E_OK)
 695                 goto isc_end;
 696             if(!strncmp(buffer, "BH", 2))
 697                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
 698         }
 699
 700         lstrcpynA(buffer, "YR", max_len-1);
 701
 702         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 703         {
 704             cleanup_helper(helper);
 705             goto isc_end;
 706         }
 707
 708         TRACE("%s\n", buffer);
 709
 710         if(strncmp(buffer, "YR ", 3) != 0)
 711         {
 712             /* Something borked */
 713             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 714             ret = SEC_E_INTERNAL_ERROR;
 715             cleanup_helper(helper);
 716             goto isc_end;
 717         }
 718         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 719                         max_len-1, &bin_len)) != SEC_E_OK)
 720         {
 721             cleanup_helper(helper);
 722             goto isc_end;
 723         }
 724
 725         /* put the decoded client blob into the out buffer */
 726
 727         phNewContext->dwUpper = ctxt_attr;
 728         phNewContext->dwLower = (ULONG_PTR)helper;
 729
 730         ret = SEC_I_CONTINUE_NEEDED;
 731     }
 732     else
 733     {
 734         int input_token_idx;
 735
 736         /* handle second call here */
 737         /* encode server data to base64 */
 738         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
 739         {
 740             ret = SEC_E_INVALID_TOKEN;
 741             goto isc_end;
 742         }
 743
 744         if(!phContext)
 745         {
 746             ret = SEC_E_INVALID_HANDLE;
 747             goto isc_end;
 748         }
 749
 750         /* As the server side of sspi never calls this, make sure that
 751          * the handler is a client handler.
 752          */
 753         helper = (PNegoHelper)phContext->dwLower;
 754         if(helper->mode != NTLM_CLIENT)
 755         {
 756             TRACE("Helper mode = %d\n", helper->mode);
 757             ret = SEC_E_INVALID_HANDLE;
 758             goto isc_end;
 759         }
 760
 761         if (!pInput->pBuffers[input_token_idx].pvBuffer)
 762         {
 763             ret = SEC_E_INTERNAL_ERROR;
 764             goto isc_end;
 765         }
 766
 767         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
 768         {
 769             TRACE("pInput->pBuffers[%d].cbBuffer is: %d\n",
 770                     input_token_idx,
 771                     pInput->pBuffers[input_token_idx].cbBuffer);
 772             ret = SEC_E_INVALID_TOKEN;
 773             goto isc_end;
 774         }
 775         else
 776             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
 777
 778         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
 779
 780         lstrcpynA(buffer, "TT ", max_len-1);
 781
 782         if((ret = encodeBase64(bin, bin_len, buffer+3,
 783                         max_len-3, &buffer_len)) != SEC_E_OK)
 784             goto isc_end;
 785
 786         TRACE("Server sent: %s\n", debugstr_a(buffer));
 787
 788         /* send TT base64 blob to ntlm_auth */
 789         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 790             goto isc_end;
 791
 792         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 793
 794         if( (strncmp(buffer, "KK ", 3) != 0) &&
 795                 (strncmp(buffer, "AF ", 3) !=0))
 796         {
 797             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 798             ret = SEC_E_INVALID_TOKEN;
 799             goto isc_end;
 800         }
 801
 802         /* decode the blob and send it to server */
 803         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 804                         &bin_len)) != SEC_E_OK)
 805         {
 806             goto isc_end;
 807         }
 808
 809         phNewContext->dwUpper = ctxt_attr;
 810         phNewContext->dwLower = (ULONG_PTR)helper;
 811
 812         ret = SEC_E_OK;
 813     }
 814
 815     /* put the decoded client blob into the out buffer */
 816
 817     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
 818     {
 819         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
 820         ret = SEC_E_BUFFER_TOO_SMALL;
 821         if ((phContext == NULL) && (pInput == NULL))
 822         {
 823             cleanup_helper(helper);
 824             phNewContext->dwUpper = 0;
 825             phNewContext->dwLower = 0;
 826         }
 827         goto isc_end;
 828     }
 829
 830     if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
 831     {
 832         pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
 833         pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 834     }
 835     else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
 836     {
 837         TRACE("out buffer is NULL or has not enough space\n");
 838         ret = SEC_E_BUFFER_TOO_SMALL;
 839         if ((phContext == NULL) && (pInput == NULL))
 840         {
 841             cleanup_helper(helper);
 842             phNewContext->dwUpper = 0;
 843             phNewContext->dwLower = 0;
 844         }
 845         goto isc_end;
 846     }
 847
 848     if (!pOutput->pBuffers[token_idx].pvBuffer)
 849     {
 850         TRACE("out buffer is NULL\n");
 851         ret = SEC_E_INTERNAL_ERROR;
 852         if ((phContext == NULL) && (pInput == NULL))
 853         {
 854             cleanup_helper(helper);
 855             phNewContext->dwUpper = 0;
 856             phNewContext->dwLower = 0;
 857         }
 858         goto isc_end;
 859     }
 860
 861     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 862     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
 863
 864     if(ret == SEC_E_OK)
 865     {
 866         TRACE("Getting negotiated flags\n");
 867         lstrcpynA(buffer, "GF", max_len - 1);
 868         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 869             goto isc_end;
 870
 871         if(buffer_len < 3)
 872         {
 873             TRACE("No flags negotiated.\n");
 874             helper->neg_flags = 0l;
 875         }
 876         else
 877         {
 878             TRACE("Negotiated %s\n", debugstr_a(buffer));
 879             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
 880             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
 881         }
 882
 883         TRACE("Getting session key\n");
 884         lstrcpynA(buffer, "GK", max_len - 1);
 885         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 886             goto isc_end;
 887
 888         if(strncmp(buffer, "BH", 2) == 0)
 889             TRACE("No key negotiated.\n");
 890         else if(strncmp(buffer, "GK ", 3) == 0)
 891         {
 892             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 893                             &bin_len)) != SEC_E_OK)
 894             {
 895                 TRACE("Failed to decode session key\n");
 896             }
 897             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 898             HeapFree(GetProcessHeap(), 0, helper->session_key);
 899             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 900             if(!helper->session_key)
 901             {
 902                 TRACE("Failed to allocate memory for session key\n");
 903                 ret = SEC_E_INTERNAL_ERROR;
 904                 goto isc_end;
 905             }
 906             memcpy(helper->session_key, bin, bin_len);
 907         }
 908
 909         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 910         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 911         helper->crypt.ntlm.seq_num = 0l;
 912         SECUR32_CreateNTLMv2SubKeys(helper);
 913         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
 914         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
 915         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
 916                          helper->crypt.ntlm2.send_seal_key, 16);
 917         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
 918                          helper->crypt.ntlm2.recv_seal_key, 16);
 919         helper->crypt.ntlm2.send_seq_no = 0l;
 920         helper->crypt.ntlm2.recv_seq_no = 0l;
 921     }
 922
 923 isc_end:
 924     HeapFree(GetProcessHeap(), 0, username);
 925     HeapFree(GetProcessHeap(), 0, domain);
 926     HeapFree(GetProcessHeap(), 0, password);
 927     HeapFree(GetProcessHeap(), 0, want_flags);
 928     HeapFree(GetProcessHeap(), 0, buffer);
 929     HeapFree(GetProcessHeap(), 0, bin);
 930     return ret;
 931 }
 932
 933 /***********************************************************************
 934  *              InitializeSecurityContextA
 935  */
 936 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 937  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 938  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 939  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 940  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 941 {
 942     SECURITY_STATUS ret;
 943     SEC_WCHAR *target = NULL;
 944
 945     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 946      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 947      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 948
 949     if(pszTargetName != NULL)
 950     {
 951         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 952             strlen(pszTargetName)+1, NULL, 0);
 953         target = HeapAlloc(GetProcessHeap(), 0, target_size *
 954                 sizeof(SEC_WCHAR));
 955         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 956             target, target_size);
 957     }
 958
 959     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 960             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 961             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 962
 963     HeapFree(GetProcessHeap(), 0, target);
 964     return ret;
 965 }
 966
 967 /***********************************************************************
 968  *              AcceptSecurityContext
 969  */
 970 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 971  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 972  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 973  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 974 {
 975     SECURITY_STATUS ret;
 976     char *buffer, *want_flags = NULL;
 977     PBYTE bin;
 978     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 979     ULONG ctxt_attr = 0;
 980     PNegoHelper helper;
 981     PNtlmCredentials ntlm_cred;
 982
 983     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 984      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 985      ptsExpiry);
 986
 987     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 988     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 989
 990     if(TargetDataRep == SECURITY_NETWORK_DREP){
 991         TRACE("Using SECURITY_NETWORK_DREP\n");
 992     }
 993
 994     if(phContext == NULL)
 995     {
 996         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
 997         SEC_CHAR *server_argv[] = { ntlm_auth,
 998             server_helper_protocol,
 999             NULL };
1000
1001         if (!phCredential)
1002         {
1003             ret = SEC_E_INVALID_HANDLE;
1004             goto asc_end;
1005         }
1006
1007         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1008
1009         if(ntlm_cred->mode != NTLM_SERVER)
1010         {
1011             ret = SEC_E_INVALID_HANDLE;
1012             goto asc_end;
1013         }
1014
1015         /* This is the first call to AcceptSecurityHandle */
1016         if(pInput == NULL)
1017         {
1018             ret = SEC_E_INCOMPLETE_MESSAGE;
1019             goto asc_end;
1020         }
1021
1022         if(pInput->cBuffers < 1)
1023         {
1024             ret = SEC_E_INCOMPLETE_MESSAGE;
1025             goto asc_end;
1026         }
1027
1028         if(pInput->pBuffers[0].cbBuffer > max_len)
1029         {
1030             ret = SEC_E_INVALID_TOKEN;
1031             goto asc_end;
1032         }
1033         else
1034             bin_len = pInput->pBuffers[0].cbBuffer;
1035
1036         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1037             SEC_E_OK)
1038         {
1039             ret = SEC_E_INTERNAL_ERROR;
1040             goto asc_end;
1041         }
1042         helper->mode = NTLM_SERVER;
1043
1044         /* Handle all the flags */
1045         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1046         if(want_flags == NULL)
1047         {
1048             TRACE("Failed to allocate memory for the want_flags!\n");
1049             ret = SEC_E_INSUFFICIENT_MEMORY;
1050             cleanup_helper(helper);
1051             goto asc_end;
1052         }
1053         lstrcpyA(want_flags, "SF");
1054         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1055         {
1056             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1057         }
1058         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1059         {
1060             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1061         }
1062         if(fContextReq & ASC_REQ_CONNECTION)
1063         {
1064             /* This is default, so we'll enable it */
1065             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1066             ctxt_attr |= ASC_RET_CONNECTION;
1067         }
1068         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1069         {
1070             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1071         }
1072         if(fContextReq & ASC_REQ_INTEGRITY)
1073         {
1074             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1075         }
1076         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1077         {
1078             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1079         }
1080         if(fContextReq & ASC_REQ_REPLAY_DETECT)
1081         {
1082             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1083         }
1084         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1085         {
1086             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1087         }
1088         if(fContextReq & ISC_REQ_STREAM)
1089         {
1090             FIXME("ASC_REQ_STREAM stub\n");
1091         }
1092         /* Done with the flags */
1093
1094         if(lstrlenA(want_flags) > 3)
1095         {
1096             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1097             lstrcpynA(buffer, want_flags, max_len - 1);
1098             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1099                     SEC_E_OK)
1100             {
1101                 cleanup_helper(helper);
1102                 goto asc_end;
1103             }
1104             if(!strncmp(buffer, "BH", 2))
1105                 TRACE("Helper doesn't understand new command set\n");
1106         }
1107
1108         /* This is the YR request from the client, encode to base64 */
1109
1110         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1111
1112         lstrcpynA(buffer, "YR ", max_len-1);
1113
1114         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1115                     &buffer_len)) != SEC_E_OK)
1116         {
1117             cleanup_helper(helper);
1118             goto asc_end;
1119         }
1120
1121         TRACE("Client sent: %s\n", debugstr_a(buffer));
1122
1123         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1124                     SEC_E_OK)
1125         {
1126             cleanup_helper(helper);
1127             goto asc_end;
1128         }
1129
1130         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1131         /* The expected answer is TT <base64 blob> */
1132
1133         if(strncmp(buffer, "TT ", 3) != 0)
1134         {
1135             ret = SEC_E_INTERNAL_ERROR;
1136             cleanup_helper(helper);
1137             goto asc_end;
1138         }
1139
1140         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1141                         &bin_len)) != SEC_E_OK)
1142         {
1143             cleanup_helper(helper);
1144             goto asc_end;
1145         }
1146
1147         /* send this to the client */
1148         if(pOutput == NULL)
1149         {
1150             ret = SEC_E_INSUFFICIENT_MEMORY;
1151             cleanup_helper(helper);
1152             goto asc_end;
1153         }
1154
1155         if(pOutput->cBuffers < 1)
1156         {
1157             ret = SEC_E_INSUFFICIENT_MEMORY;
1158             cleanup_helper(helper);
1159             goto asc_end;
1160         }
1161
1162         pOutput->pBuffers[0].cbBuffer = bin_len;
1163         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1164         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1165         ret = SEC_I_CONTINUE_NEEDED;
1166
1167     }
1168     else
1169     {
1170         /* we expect a KK request from client */
1171         if(pInput == NULL)
1172         {
1173             ret = SEC_E_INCOMPLETE_MESSAGE;
1174             goto asc_end;
1175         }
1176
1177         if(pInput->cBuffers < 1)
1178         {
1179             ret = SEC_E_INCOMPLETE_MESSAGE;
1180             goto asc_end;
1181         }
1182
1183         if(!phContext)
1184         {
1185             ret = SEC_E_INVALID_HANDLE;
1186             goto asc_end;
1187         }
1188
1189         helper = (PNegoHelper)phContext->dwLower;
1190
1191         if(helper->mode != NTLM_SERVER)
1192         {
1193             ret = SEC_E_INVALID_HANDLE;
1194             goto asc_end;
1195         }
1196
1197         if(pInput->pBuffers[0].cbBuffer > max_len)
1198         {
1199             ret = SEC_E_INVALID_TOKEN;
1200             goto asc_end;
1201         }
1202         else
1203             bin_len = pInput->pBuffers[0].cbBuffer;
1204
1205         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1206
1207         lstrcpynA(buffer, "KK ", max_len-1);
1208
1209         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1210                     &buffer_len)) != SEC_E_OK)
1211         {
1212             goto asc_end;
1213         }
1214
1215         TRACE("Client sent: %s\n", debugstr_a(buffer));
1216
1217         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1218                     SEC_E_OK)
1219         {
1220             goto asc_end;
1221         }
1222
1223         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1224
1225         /* At this point, we get a NA if the user didn't authenticate, but a BH
1226          * if ntlm_auth could not connect to winbindd. Apart from running Wine
1227          * as root, there is no way to fix this for now, so just handle this as
1228          * a failed login. */
1229         if(strncmp(buffer, "AF ", 3) != 0)
1230         {
1231             if(strncmp(buffer, "NA ", 3) == 0)
1232             {
1233                 ret = SEC_E_LOGON_DENIED;
1234                 goto asc_end;
1235             }
1236             else
1237             {
1238                 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1239
1240                 if( (buffer_len >= ntlm_pipe_err_len) &&
1241                     (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1242                              ntlm_pipe_err_len) == 0))
1243                 {
1244                     TRACE("Connection to winbindd failed\n");
1245                     ret = SEC_E_LOGON_DENIED;
1246                 }
1247                 else
1248                     ret = SEC_E_INTERNAL_ERROR;
1249
1250                 goto asc_end;
1251             }
1252         }
1253         pOutput->pBuffers[0].cbBuffer = 0;
1254         ret = SEC_E_OK;
1255
1256         TRACE("Getting negotiated flags\n");
1257         lstrcpynA(buffer, "GF", max_len - 1);
1258         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1259             goto asc_end;
1260
1261         if(buffer_len < 3)
1262         {
1263             TRACE("No flags negotiated, or helper does not support GF command\n");
1264         }
1265         else
1266         {
1267             TRACE("Negotiated %s\n", debugstr_a(buffer));
1268             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
1269             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
1270         }
1271
1272         TRACE("Getting session key\n");
1273         lstrcpynA(buffer, "GK", max_len - 1);
1274         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1275             goto asc_end;
1276
1277         if(buffer_len < 3)
1278             TRACE("Helper does not support GK command\n");
1279         else
1280         {
1281             if(strncmp(buffer, "BH ", 3) == 0)
1282             {
1283                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1284                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1285                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1286                 memset(helper->session_key, 0 , 16);
1287             }
1288             else if(strncmp(buffer, "GK ", 3) == 0)
1289             {
1290                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1291                                 &bin_len)) != SEC_E_OK)
1292                 {
1293                     TRACE("Failed to decode session key\n");
1294                 }
1295                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1296                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1297                 if(!helper->session_key)
1298                 {
1299                     TRACE("Failed to allocate memory for session key\n");
1300                     ret = SEC_E_INTERNAL_ERROR;
1301                     goto asc_end;
1302                 }
1303                 memcpy(helper->session_key, bin, 16);
1304             }
1305         }
1306         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1307         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1308         helper->crypt.ntlm.seq_num = 0l;
1309     }
1310
1311     phNewContext->dwUpper = ctxt_attr;
1312     phNewContext->dwLower = (ULONG_PTR)helper;
1313
1314 asc_end:
1315     HeapFree(GetProcessHeap(), 0, want_flags);
1316     HeapFree(GetProcessHeap(), 0, buffer);
1317     HeapFree(GetProcessHeap(), 0, bin);
1318     return ret;
1319 }
1320
1321 /***********************************************************************
1322  *              CompleteAuthToken
1323  */
1324 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1325  PSecBufferDesc pToken)
1326 {
1327     /* We never need to call CompleteAuthToken anyway */
1328     TRACE("%p %p\n", phContext, pToken);
1329     if (!phContext)
1330         return SEC_E_INVALID_HANDLE;
1331
1332     return SEC_E_OK;
1333 }
1334
1335 /***********************************************************************
1336  *              DeleteSecurityContext
1337  */
1338 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1339 {
1340     PNegoHelper helper;
1341
1342     TRACE("%p\n", phContext);
1343     if (!phContext)
1344         return SEC_E_INVALID_HANDLE;
1345
1346     helper = (PNegoHelper)phContext->dwLower;
1347
1348     phContext->dwUpper = 0;
1349     phContext->dwLower = 0;
1350
1351     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1352     HeapFree(GetProcessHeap(), 0, helper->session_key);
1353     SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1354     SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1355     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1356     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1357     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1358     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1359
1360     cleanup_helper(helper);
1361
1362     return SEC_E_OK;
1363 }
1364
1365 /***********************************************************************
1366  *              QueryContextAttributesW
1367  */
1368 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1369  ULONG ulAttribute, void *pBuffer)
1370 {
1371     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1372     if (!phContext)
1373         return SEC_E_INVALID_HANDLE;
1374
1375     switch(ulAttribute)
1376     {
1377 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1378         _x(SECPKG_ATTR_ACCESS_TOKEN);
1379         _x(SECPKG_ATTR_AUTHORITY);
1380         _x(SECPKG_ATTR_DCE_INFO);
1381         case SECPKG_ATTR_FLAGS:
1382         {
1383             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1384             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1385
1386             spcf->Flags = 0;
1387             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1388                 spcf->Flags |= ISC_RET_INTEGRITY;
1389             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1390                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1391             return SEC_E_OK;
1392         }
1393         _x(SECPKG_ATTR_KEY_INFO);
1394         _x(SECPKG_ATTR_LIFESPAN);
1395         _x(SECPKG_ATTR_NAMES);
1396         _x(SECPKG_ATTR_NATIVE_NAMES);
1397         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1398         _x(SECPKG_ATTR_PACKAGE_INFO);
1399         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1400         _x(SECPKG_ATTR_SESSION_KEY);
1401         case SECPKG_ATTR_SIZES:
1402         {
1403             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1404             spcs->cbMaxToken = NTLM_MAX_BUF;
1405             spcs->cbMaxSignature = 16;
1406             spcs->cbBlockSize = 0;
1407             spcs->cbSecurityTrailer = 16;
1408             return SEC_E_OK;
1409         }
1410         _x(SECPKG_ATTR_STREAM_SIZES);
1411         _x(SECPKG_ATTR_TARGET_INFORMATION);
1412 #undef _x
1413         default:
1414             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1415     }
1416
1417     return SEC_E_UNSUPPORTED_FUNCTION;
1418 }
1419
1420 /***********************************************************************
1421  *              QueryContextAttributesA
1422  */
1423 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1424  ULONG ulAttribute, void *pBuffer)
1425 {
1426     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1427 }
1428
1429 /***********************************************************************
1430  *              ImpersonateSecurityContext
1431  */
1432 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1433 {
1434     SECURITY_STATUS ret;
1435
1436     TRACE("%p\n", phContext);
1437     if (phContext)
1438     {
1439         ret = SEC_E_UNSUPPORTED_FUNCTION;
1440     }
1441     else
1442     {
1443         ret = SEC_E_INVALID_HANDLE;
1444     }
1445     return ret;
1446 }
1447
1448 /***********************************************************************
1449  *              RevertSecurityContext
1450  */
1451 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1452 {
1453     SECURITY_STATUS ret;
1454
1455     TRACE("%p\n", phContext);
1456     if (phContext)
1457     {
1458         ret = SEC_E_UNSUPPORTED_FUNCTION;
1459     }
1460     else
1461     {
1462         ret = SEC_E_INVALID_HANDLE;
1463     }
1464     return ret;
1465 }
1466
1467 /***********************************************************************
1468  *             ntlm_CreateSignature
1469  * As both MakeSignature and VerifySignature need this, but different keys
1470  * are needed for NTLMv2, the logic goes into a helper function.
1471  * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1472  * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1473  * the signature is encrypted after the message was encrypted, so
1474  * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1475  * false.
1476  */
1477 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1478         int token_idx, SignDirection direction, BOOL encrypt_sig)
1479 {
1480     ULONG sign_version = 1;
1481     UINT i;
1482     PBYTE sig;
1483     TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1484             encrypt_sig);
1485
1486     sig = pMessage->pBuffers[token_idx].pvBuffer;
1487
1488     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1489             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1490     {
1491         BYTE digest[16];
1492         BYTE seq_no[4];
1493         HMAC_MD5_CTX hmac_md5_ctx;
1494
1495         TRACE("Signing NTLM2 style\n");
1496
1497         if(direction == NTLM_SEND)
1498         {
1499             seq_no[0] = (helper->crypt.ntlm2.send_seq_no >>  0) & 0xff;
1500             seq_no[1] = (helper->crypt.ntlm2.send_seq_no >>  8) & 0xff;
1501             seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1502             seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1503
1504             ++(helper->crypt.ntlm2.send_seq_no);
1505
1506             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1507         }
1508         else
1509         {
1510             seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >>  0) & 0xff;
1511             seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >>  8) & 0xff;
1512             seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1513             seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1514
1515             ++(helper->crypt.ntlm2.recv_seq_no);
1516
1517             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1518         }
1519
1520         HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1521         for( i = 0; i < pMessage->cBuffers; ++i )
1522         {
1523             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1524                 HMACMD5Update(&hmac_md5_ctx, pMessage->pBuffers[i].pvBuffer,
1525                         pMessage->pBuffers[i].cbBuffer);
1526         }
1527
1528         HMACMD5Final(&hmac_md5_ctx, digest);
1529
1530         if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1531         {
1532             if(direction == NTLM_SEND)
1533                 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1534             else
1535                 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1536         }
1537
1538         /* The NTLM2 signature is the sign version */
1539         sig[ 0] = (sign_version >>  0) & 0xff;
1540         sig[ 1] = (sign_version >>  8) & 0xff;
1541         sig[ 2] = (sign_version >> 16) & 0xff;
1542         sig[ 3] = (sign_version >> 24) & 0xff;
1543         /* The first 8 bytes of the digest */
1544         memcpy(sig+4, digest, 8);
1545         /* And the sequence number */
1546         memcpy(sig+12, seq_no, 4);
1547
1548         pMessage->pBuffers[token_idx].cbBuffer = 16;
1549
1550         return SEC_E_OK;
1551     }
1552     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1553     {
1554         ULONG crc = 0U;
1555         TRACE("Signing NTLM1 style\n");
1556
1557         for(i=0; i < pMessage->cBuffers; ++i)
1558         {
1559             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1560             {
1561                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1562                     pMessage->pBuffers[i].cbBuffer, crc);
1563             }
1564         }
1565
1566         sig[ 0] = (sign_version >>  0) & 0xff;
1567         sig[ 1] = (sign_version >>  8) & 0xff;
1568         sig[ 2] = (sign_version >> 16) & 0xff;
1569         sig[ 3] = (sign_version >> 24) & 0xff;
1570         memset(sig+4, 0, 4);
1571         sig[ 8] = (crc >>  0) & 0xff;
1572         sig[ 9] = (crc >>  8) & 0xff;
1573         sig[10] = (crc >> 16) & 0xff;
1574         sig[11] = (crc >> 24) & 0xff;
1575         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1576         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1577         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1578         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1579
1580         ++(helper->crypt.ntlm.seq_num);
1581
1582         if(encrypt_sig)
1583             SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1584         return SEC_E_OK;
1585     }
1586
1587     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1588     {
1589         TRACE("Creating a dummy signature.\n");
1590         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1591         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1592         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1593         pMessage->pBuffers[token_idx].cbBuffer = 16;
1594         return SEC_E_OK;
1595     }
1596
1597     return SEC_E_UNSUPPORTED_FUNCTION;
1598 }
1599
1600 /***********************************************************************
1601  *              MakeSignature
1602  */
1603 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1604  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1605 {
1606     PNegoHelper helper;
1607     int token_idx;
1608
1609     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1610     if (!phContext)
1611         return SEC_E_INVALID_HANDLE;
1612
1613     if(fQOP)
1614         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1615
1616     if(MessageSeqNo)
1617         FIXME("Ignoring MessageSeqNo\n");
1618
1619     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1620         return SEC_E_INVALID_TOKEN;
1621
1622     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1623     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1624         return SEC_E_INVALID_TOKEN;
1625
1626     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1627         return SEC_E_BUFFER_TOO_SMALL;
1628
1629     helper = (PNegoHelper)phContext->dwLower;
1630     TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1631
1632     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1633 }
1634
1635 /***********************************************************************
1636  *              VerifySignature
1637  */
1638 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1639  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1640 {
1641     PNegoHelper helper;
1642     ULONG fQOP = 0;
1643     UINT i;
1644     int token_idx;
1645     SECURITY_STATUS ret;
1646     SecBufferDesc local_desc;
1647     PSecBuffer     local_buff;
1648     BYTE          local_sig[16];
1649
1650     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1651     if(!phContext)
1652         return SEC_E_INVALID_HANDLE;
1653
1654     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1655         return SEC_E_INVALID_TOKEN;
1656
1657     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1658         return SEC_E_INVALID_TOKEN;
1659
1660     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1661         return SEC_E_BUFFER_TOO_SMALL;
1662
1663     if(MessageSeqNo)
1664         FIXME("Ignoring MessageSeqNo\n");
1665
1666     helper = (PNegoHelper)phContext->dwLower;
1667     TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1668
1669     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1670
1671     local_desc.ulVersion = SECBUFFER_VERSION;
1672     local_desc.cBuffers = pMessage->cBuffers;
1673     local_desc.pBuffers = local_buff;
1674
1675     for(i=0; i < pMessage->cBuffers; ++i)
1676     {
1677         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1678         {
1679             local_buff[i].BufferType = SECBUFFER_TOKEN;
1680             local_buff[i].cbBuffer = 16;
1681             local_buff[i].pvBuffer = local_sig;
1682         }
1683         else
1684         {
1685             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1686             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1687             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1688         }
1689     }
1690
1691     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1692         return ret;
1693
1694     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1695                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1696         ret = SEC_E_MESSAGE_ALTERED;
1697     else
1698         ret = SEC_E_OK;
1699
1700     HeapFree(GetProcessHeap(), 0, local_buff);
1701     pfQOP = &fQOP;
1702
1703     return ret;
1704
1705 }
1706
1707 /***********************************************************************
1708  *             FreeCredentialsHandle
1709  */
1710 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1711         PCredHandle phCredential)
1712 {
1713     SECURITY_STATUS ret;
1714
1715     if(phCredential){
1716         PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1717         phCredential->dwUpper = 0;
1718         phCredential->dwLower = 0;
1719         if (ntlm_cred->password)
1720             memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1721         HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1722         HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1723         HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1724         HeapFree(GetProcessHeap(), 0, ntlm_cred);
1725         ret = SEC_E_OK;
1726     }
1727     else
1728         ret = SEC_E_OK;
1729
1730     return ret;
1731 }
1732
1733 /***********************************************************************
1734  *             EncryptMessage
1735  */
1736 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1737         ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1738 {
1739     PNegoHelper helper;
1740     int token_idx, data_idx;
1741
1742     TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1743
1744     if(!phContext)
1745         return SEC_E_INVALID_HANDLE;
1746
1747     if(fQOP)
1748         FIXME("Ignoring fQOP\n");
1749
1750     if(MessageSeqNo)
1751         FIXME("Ignoring MessageSeqNo\n");
1752
1753     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1754         return SEC_E_INVALID_TOKEN;
1755
1756     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1757         return SEC_E_INVALID_TOKEN;
1758
1759     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
1760         return SEC_E_INVALID_TOKEN;
1761
1762     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1763         return SEC_E_BUFFER_TOO_SMALL;
1764
1765     helper = (PNegoHelper) phContext->dwLower;
1766
1767     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1768             helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1769     {
1770         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1771         SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1772                 pMessage->pBuffers[data_idx].pvBuffer,
1773                 pMessage->pBuffers[data_idx].cbBuffer);
1774
1775         if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1776             SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1777                     ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1778
1779
1780         return SEC_E_OK;
1781     }
1782     else
1783     {
1784         PBYTE sig;
1785         ULONG save_flags;
1786
1787         /* EncryptMessage always produces real signatures, so make sure
1788          * NTLMSSP_NEGOTIATE_SIGN is set*/
1789         save_flags = helper->neg_flags;
1790         helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1791         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1792         helper->neg_flags = save_flags;
1793
1794         sig = pMessage->pBuffers[token_idx].pvBuffer;
1795
1796         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1797                 pMessage->pBuffers[data_idx].pvBuffer,
1798                 pMessage->pBuffers[data_idx].cbBuffer);
1799         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1800
1801         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1802             memset(sig+4, 0, 4);
1803
1804     }
1805
1806     return SEC_E_OK;
1807 }
1808
1809 /***********************************************************************
1810  *             DecryptMessage
1811  */
1812 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1813         PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1814 {
1815     SECURITY_STATUS ret;
1816     ULONG ntlmssp_flags_save;
1817     PNegoHelper helper;
1818     int token_idx, data_idx;
1819     TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1820
1821     if(!phContext)
1822         return SEC_E_INVALID_HANDLE;
1823
1824     if(MessageSeqNo)
1825         FIXME("Ignoring MessageSeqNo\n");
1826
1827     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1828         return SEC_E_INVALID_TOKEN;
1829
1830     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1831         return SEC_E_INVALID_TOKEN;
1832
1833     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
1834         return SEC_E_INVALID_TOKEN;
1835
1836     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1837         return SEC_E_BUFFER_TOO_SMALL;
1838
1839     helper = (PNegoHelper) phContext->dwLower;
1840
1841     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1842     {
1843         SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1844                 pMessage->pBuffers[data_idx].pvBuffer,
1845                 pMessage->pBuffers[data_idx].cbBuffer);
1846     }
1847     else
1848     {
1849         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1850                 pMessage->pBuffers[data_idx].pvBuffer,
1851                 pMessage->pBuffers[data_idx].cbBuffer);
1852     }
1853
1854     /* Make sure we use a session key for the signature check, EncryptMessage
1855      * always does that, even in the dummy case */
1856     ntlmssp_flags_save = helper->neg_flags;
1857
1858     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1859     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1860
1861     helper->neg_flags = ntlmssp_flags_save;
1862
1863     return ret;
1864 }
1865
1866 static const SecurityFunctionTableA ntlmTableA = {
1867     1,
1868     NULL,   /* EnumerateSecurityPackagesA */
1869     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1870     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1871     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1872     NULL,   /* Reserved2 */
1873     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1874     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1875     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1876     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1877     NULL,  /* ApplyControlToken */
1878     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1879     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1880     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1881     ntlm_MakeSignature,                 /* MakeSignature */
1882     ntlm_VerifySignature,               /* VerifySignature */
1883     FreeContextBuffer,                  /* FreeContextBuffer */
1884     NULL,   /* QuerySecurityPackageInfoA */
1885     NULL,   /* Reserved3 */
1886     NULL,   /* Reserved4 */
1887     NULL,   /* ExportSecurityContext */
1888     NULL,   /* ImportSecurityContextA */
1889     NULL,   /* AddCredentialsA */
1890     NULL,   /* Reserved8 */
1891     NULL,   /* QuerySecurityContextToken */
1892     ntlm_EncryptMessage,                /* EncryptMessage */
1893     ntlm_DecryptMessage,                /* DecryptMessage */
1894     NULL,   /* SetContextAttributesA */
1895 };
1896
1897 static const SecurityFunctionTableW ntlmTableW = {
1898     1,
1899     NULL,   /* EnumerateSecurityPackagesW */
1900     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1901     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1902     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1903     NULL,   /* Reserved2 */
1904     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1905     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1906     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1907     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1908     NULL,  /* ApplyControlToken */
1909     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1910     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1911     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1912     ntlm_MakeSignature,                 /* MakeSignature */
1913     ntlm_VerifySignature,               /* VerifySignature */
1914     FreeContextBuffer,                  /* FreeContextBuffer */
1915     NULL,   /* QuerySecurityPackageInfoW */
1916     NULL,   /* Reserved3 */
1917     NULL,   /* Reserved4 */
1918     NULL,   /* ExportSecurityContext */
1919     NULL,   /* ImportSecurityContextW */
1920     NULL,   /* AddCredentialsW */
1921     NULL,   /* Reserved8 */
1922     NULL,   /* QuerySecurityContextToken */
1923     ntlm_EncryptMessage,                /* EncryptMessage */
1924     ntlm_DecryptMessage,                /* DecryptMessage */
1925     NULL,   /* SetContextAttributesW */
1926 };
1927
1928 #define NTLM_COMMENT \
1929    { 'N', 'T', 'L', 'M', ' ', \
1930      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1931      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1932
1933 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1934 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1935
1936 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1937
1938 static char ntlm_name_A[] = NTLM_NAME;
1939 static WCHAR ntlm_name_W[] = NTLM_NAME;
1940
1941 /* According to Windows, NTLM has the following capabilities.  */
1942 #define CAPS ( \
1943         SECPKG_FLAG_INTEGRITY | \
1944         SECPKG_FLAG_PRIVACY | \
1945         SECPKG_FLAG_TOKEN_ONLY | \
1946         SECPKG_FLAG_CONNECTION | \
1947         SECPKG_FLAG_MULTI_REQUIRED | \
1948         SECPKG_FLAG_IMPERSONATION | \
1949         SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1950         SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1951
1952 static const SecPkgInfoW infoW = {
1953     CAPS,
1954     1,
1955     RPC_C_AUTHN_WINNT,
1956     NTLM_MAX_BUF,
1957     ntlm_name_W,
1958     ntlm_comment_W
1959 };
1960
1961 static const SecPkgInfoA infoA = {
1962     CAPS,
1963     1,
1964     RPC_C_AUTHN_WINNT,
1965     NTLM_MAX_BUF,
1966     ntlm_name_A,
1967     ntlm_comment_A
1968 };
1969
1970 void SECUR32_initNTLMSP(void)
1971 {
1972     PNegoHelper helper;
1973     static CHAR version[] = "--version";
1974
1975     SEC_CHAR *args[] = {
1976         ntlm_auth,
1977         version,
1978         NULL };
1979
1980     if(fork_helper(&helper, ntlm_auth, args) != SEC_E_OK)
1981     {
1982         /* Cheat and allocate a helper anyway, so cleanup later will work. */
1983         helper = HeapAlloc(GetProcessHeap(),0, sizeof(NegoHelper));
1984         helper->major = helper->minor = helper->micro = -1;
1985         helper->pipe_in = helper->pipe_out = -1;
1986     }
1987     else
1988         check_version(helper);
1989
1990     if( (helper->major >  MIN_NTLM_AUTH_MAJOR_VERSION) ||
1991         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1992          helper->minor >  MIN_NTLM_AUTH_MINOR_VERSION) ||
1993         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1994          helper->minor == MIN_NTLM_AUTH_MINOR_VERSION  &&
1995          helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
1996     {
1997         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
1998         SECUR32_addPackages(provider, 1L, &infoA, &infoW);
1999     }
2000     else
2001     {
2002         ERR("%s was not found or is outdated. "
2003             "Make sure that ntlm_auth >= %d.%d.%d is in your path.\n",
2004             ntlm_auth,
2005             MIN_NTLM_AUTH_MAJOR_VERSION,
2006             MIN_NTLM_AUTH_MINOR_VERSION,
2007             MIN_NTLM_AUTH_MICRO_VERSION);
2008         ERR("Usually, you can find it in the winbind package of your "
2009             "distribution.\n");
2010
2011     }
2012     cleanup_helper(helper);
2013 }