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                 ret = SEC_E_NO_CREDENTIALS;
 663                 goto isc_end;
 664             }
 665             else /* Just do a noop on the next run */
 666                 lstrcpynA(buffer, "OK", max_len-1);
 667         }
 668         else
 669         {
 670             lstrcpynA(buffer, "PW ", max_len-1);
 671             if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
 672                         password ? pwlen : ntlm_cred->pwlen, buffer+3,
 673                         max_len-3, &buffer_len)) != SEC_E_OK)
 674             {
 675                 cleanup_helper(helper);
 676                 goto isc_end;
 677             }
 678
 679         }
 680
 681         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 682         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 683         {
 684             cleanup_helper(helper);
 685             goto isc_end;
 686         }
 687
 688         TRACE("Helper returned %s\n", debugstr_a(buffer));
 689
 690         if(lstrlenA(want_flags) > 2)
 691         {
 692             TRACE("Want flags are %s\n", debugstr_a(want_flags));
 693             lstrcpynA(buffer, want_flags, max_len-1);
 694             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 695                     != SEC_E_OK)
 696                 goto isc_end;
 697             if(!strncmp(buffer, "BH", 2))
 698                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
 699         }
 700
 701         lstrcpynA(buffer, "YR", max_len-1);
 702
 703         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 704         {
 705             cleanup_helper(helper);
 706             goto isc_end;
 707         }
 708
 709         TRACE("%s\n", buffer);
 710
 711         if(strncmp(buffer, "YR ", 3) != 0)
 712         {
 713             /* Something borked */
 714             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 715             ret = SEC_E_INTERNAL_ERROR;
 716             cleanup_helper(helper);
 717             goto isc_end;
 718         }
 719         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 720                         max_len-1, &bin_len)) != SEC_E_OK)
 721         {
 722             cleanup_helper(helper);
 723             goto isc_end;
 724         }
 725
 726         /* put the decoded client blob into the out buffer */
 727
 728         phNewContext->dwUpper = ctxt_attr;
 729         phNewContext->dwLower = (ULONG_PTR)helper;
 730
 731         ret = SEC_I_CONTINUE_NEEDED;
 732     }
 733     else
 734     {
 735         int input_token_idx;
 736
 737         /* handle second call here */
 738         /* encode server data to base64 */
 739         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
 740         {
 741             ret = SEC_E_INVALID_TOKEN;
 742             goto isc_end;
 743         }
 744
 745         if(!phContext)
 746         {
 747             ret = SEC_E_INVALID_HANDLE;
 748             goto isc_end;
 749         }
 750
 751         /* As the server side of sspi never calls this, make sure that
 752          * the handler is a client handler.
 753          */
 754         helper = (PNegoHelper)phContext->dwLower;
 755         if(helper->mode != NTLM_CLIENT)
 756         {
 757             TRACE("Helper mode = %d\n", helper->mode);
 758             ret = SEC_E_INVALID_HANDLE;
 759             goto isc_end;
 760         }
 761
 762         if (!pInput->pBuffers[input_token_idx].pvBuffer)
 763         {
 764             ret = SEC_E_INTERNAL_ERROR;
 765             goto isc_end;
 766         }
 767
 768         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
 769         {
 770             TRACE("pInput->pBuffers[%d].cbBuffer is: %d\n",
 771                     input_token_idx,
 772                     pInput->pBuffers[input_token_idx].cbBuffer);
 773             ret = SEC_E_INVALID_TOKEN;
 774             goto isc_end;
 775         }
 776         else
 777             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
 778
 779         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
 780
 781         lstrcpynA(buffer, "TT ", max_len-1);
 782
 783         if((ret = encodeBase64(bin, bin_len, buffer+3,
 784                         max_len-3, &buffer_len)) != SEC_E_OK)
 785             goto isc_end;
 786
 787         TRACE("Server sent: %s\n", debugstr_a(buffer));
 788
 789         /* send TT base64 blob to ntlm_auth */
 790         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 791             goto isc_end;
 792
 793         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 794
 795         if( (strncmp(buffer, "KK ", 3) != 0) &&
 796                 (strncmp(buffer, "AF ", 3) !=0))
 797         {
 798             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 799             ret = SEC_E_INVALID_TOKEN;
 800             goto isc_end;
 801         }
 802
 803         /* decode the blob and send it to server */
 804         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 805                         &bin_len)) != SEC_E_OK)
 806         {
 807             goto isc_end;
 808         }
 809
 810         phNewContext->dwUpper = ctxt_attr;
 811         phNewContext->dwLower = (ULONG_PTR)helper;
 812
 813         ret = SEC_E_OK;
 814     }
 815
 816     /* put the decoded client blob into the out buffer */
 817
 818     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
 819     {
 820         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
 821         ret = SEC_E_BUFFER_TOO_SMALL;
 822         if ((phContext == NULL) && (pInput == NULL))
 823         {
 824             cleanup_helper(helper);
 825             phNewContext->dwUpper = 0;
 826             phNewContext->dwLower = 0;
 827         }
 828         goto isc_end;
 829     }
 830
 831     if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
 832     {
 833         pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
 834         pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 835     }
 836     else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
 837     {
 838         TRACE("out buffer is NULL or has not enough space\n");
 839         ret = SEC_E_BUFFER_TOO_SMALL;
 840         if ((phContext == NULL) && (pInput == NULL))
 841         {
 842             cleanup_helper(helper);
 843             phNewContext->dwUpper = 0;
 844             phNewContext->dwLower = 0;
 845         }
 846         goto isc_end;
 847     }
 848
 849     if (!pOutput->pBuffers[token_idx].pvBuffer)
 850     {
 851         TRACE("out buffer is NULL\n");
 852         ret = SEC_E_INTERNAL_ERROR;
 853         if ((phContext == NULL) && (pInput == NULL))
 854         {
 855             cleanup_helper(helper);
 856             phNewContext->dwUpper = 0;
 857             phNewContext->dwLower = 0;
 858         }
 859         goto isc_end;
 860     }
 861
 862     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 863     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
 864
 865     if(ret == SEC_E_OK)
 866     {
 867         TRACE("Getting negotiated flags\n");
 868         lstrcpynA(buffer, "GF", max_len - 1);
 869         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 870             goto isc_end;
 871
 872         if(buffer_len < 3)
 873         {
 874             TRACE("No flags negotiated.\n");
 875             helper->neg_flags = 0l;
 876         }
 877         else
 878         {
 879             TRACE("Negotiated %s\n", debugstr_a(buffer));
 880             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
 881             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
 882         }
 883
 884         TRACE("Getting session key\n");
 885         lstrcpynA(buffer, "GK", max_len - 1);
 886         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 887             goto isc_end;
 888
 889         if(strncmp(buffer, "BH", 2) == 0)
 890             TRACE("No key negotiated.\n");
 891         else if(strncmp(buffer, "GK ", 3) == 0)
 892         {
 893             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 894                             &bin_len)) != SEC_E_OK)
 895             {
 896                 TRACE("Failed to decode session key\n");
 897             }
 898             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 899             HeapFree(GetProcessHeap(), 0, helper->session_key);
 900             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 901             if(!helper->session_key)
 902             {
 903                 TRACE("Failed to allocate memory for session key\n");
 904                 ret = SEC_E_INTERNAL_ERROR;
 905                 goto isc_end;
 906             }
 907             memcpy(helper->session_key, bin, bin_len);
 908         }
 909
 910         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 911         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 912         helper->crypt.ntlm.seq_num = 0l;
 913         SECUR32_CreateNTLMv2SubKeys(helper);
 914         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
 915         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
 916         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
 917                          helper->crypt.ntlm2.send_seal_key, 16);
 918         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
 919                          helper->crypt.ntlm2.recv_seal_key, 16);
 920         helper->crypt.ntlm2.send_seq_no = 0l;
 921         helper->crypt.ntlm2.recv_seq_no = 0l;
 922     }
 923
 924 isc_end:
 925     HeapFree(GetProcessHeap(), 0, username);
 926     HeapFree(GetProcessHeap(), 0, domain);
 927     HeapFree(GetProcessHeap(), 0, password);
 928     HeapFree(GetProcessHeap(), 0, want_flags);
 929     HeapFree(GetProcessHeap(), 0, buffer);
 930     HeapFree(GetProcessHeap(), 0, bin);
 931     return ret;
 932 }
 933
 934 /***********************************************************************
 935  *              InitializeSecurityContextA
 936  */
 937 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 938  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 939  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 940  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 941  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 942 {
 943     SECURITY_STATUS ret;
 944     SEC_WCHAR *target = NULL;
 945
 946     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 947      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 948      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 949
 950     if(pszTargetName != NULL)
 951     {
 952         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 953             strlen(pszTargetName)+1, NULL, 0);
 954         target = HeapAlloc(GetProcessHeap(), 0, target_size *
 955                 sizeof(SEC_WCHAR));
 956         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 957             target, target_size);
 958     }
 959
 960     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 961             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 962             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 963
 964     HeapFree(GetProcessHeap(), 0, target);
 965     return ret;
 966 }
 967
 968 /***********************************************************************
 969  *              AcceptSecurityContext
 970  */
 971 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 972  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 973  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 974  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 975 {
 976     SECURITY_STATUS ret;
 977     char *buffer, *want_flags = NULL;
 978     PBYTE bin;
 979     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 980     ULONG ctxt_attr = 0;
 981     PNegoHelper helper;
 982     PNtlmCredentials ntlm_cred;
 983
 984     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 985      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 986      ptsExpiry);
 987
 988     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 989     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 990
 991     if(TargetDataRep == SECURITY_NETWORK_DREP){
 992         TRACE("Using SECURITY_NETWORK_DREP\n");
 993     }
 994
 995     if(phContext == NULL)
 996     {
 997         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
 998         SEC_CHAR *server_argv[] = { ntlm_auth,
 999             server_helper_protocol,
1000             NULL };
1001
1002         if (!phCredential)
1003         {
1004             ret = SEC_E_INVALID_HANDLE;
1005             goto asc_end;
1006         }
1007
1008         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1009
1010         if(ntlm_cred->mode != NTLM_SERVER)
1011         {
1012             ret = SEC_E_INVALID_HANDLE;
1013             goto asc_end;
1014         }
1015
1016         /* This is the first call to AcceptSecurityHandle */
1017         if(pInput == NULL)
1018         {
1019             ret = SEC_E_INCOMPLETE_MESSAGE;
1020             goto asc_end;
1021         }
1022
1023         if(pInput->cBuffers < 1)
1024         {
1025             ret = SEC_E_INCOMPLETE_MESSAGE;
1026             goto asc_end;
1027         }
1028
1029         if(pInput->pBuffers[0].cbBuffer > max_len)
1030         {
1031             ret = SEC_E_INVALID_TOKEN;
1032             goto asc_end;
1033         }
1034         else
1035             bin_len = pInput->pBuffers[0].cbBuffer;
1036
1037         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1038             SEC_E_OK)
1039         {
1040             ret = SEC_E_INTERNAL_ERROR;
1041             goto asc_end;
1042         }
1043         helper->mode = NTLM_SERVER;
1044
1045         /* Handle all the flags */
1046         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1047         if(want_flags == NULL)
1048         {
1049             TRACE("Failed to allocate memory for the want_flags!\n");
1050             ret = SEC_E_INSUFFICIENT_MEMORY;
1051             cleanup_helper(helper);
1052             goto asc_end;
1053         }
1054         lstrcpyA(want_flags, "SF");
1055         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1056         {
1057             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1058         }
1059         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1060         {
1061             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1062         }
1063         if(fContextReq & ASC_REQ_CONNECTION)
1064         {
1065             /* This is default, so we'll enable it */
1066             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1067             ctxt_attr |= ASC_RET_CONNECTION;
1068         }
1069         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1070         {
1071             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1072         }
1073         if(fContextReq & ASC_REQ_INTEGRITY)
1074         {
1075             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1076         }
1077         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1078         {
1079             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1080         }
1081         if(fContextReq & ASC_REQ_REPLAY_DETECT)
1082         {
1083             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1084         }
1085         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1086         {
1087             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1088         }
1089         if(fContextReq & ISC_REQ_STREAM)
1090         {
1091             FIXME("ASC_REQ_STREAM stub\n");
1092         }
1093         /* Done with the flags */
1094
1095         if(lstrlenA(want_flags) > 3)
1096         {
1097             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1098             lstrcpynA(buffer, want_flags, max_len - 1);
1099             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1100                     SEC_E_OK)
1101             {
1102                 cleanup_helper(helper);
1103                 goto asc_end;
1104             }
1105             if(!strncmp(buffer, "BH", 2))
1106                 TRACE("Helper doesn't understand new command set\n");
1107         }
1108
1109         /* This is the YR request from the client, encode to base64 */
1110
1111         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1112
1113         lstrcpynA(buffer, "YR ", max_len-1);
1114
1115         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1116                     &buffer_len)) != SEC_E_OK)
1117         {
1118             cleanup_helper(helper);
1119             goto asc_end;
1120         }
1121
1122         TRACE("Client sent: %s\n", debugstr_a(buffer));
1123
1124         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1125                     SEC_E_OK)
1126         {
1127             cleanup_helper(helper);
1128             goto asc_end;
1129         }
1130
1131         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1132         /* The expected answer is TT <base64 blob> */
1133
1134         if(strncmp(buffer, "TT ", 3) != 0)
1135         {
1136             ret = SEC_E_INTERNAL_ERROR;
1137             cleanup_helper(helper);
1138             goto asc_end;
1139         }
1140
1141         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1142                         &bin_len)) != SEC_E_OK)
1143         {
1144             cleanup_helper(helper);
1145             goto asc_end;
1146         }
1147
1148         /* send this to the client */
1149         if(pOutput == NULL)
1150         {
1151             ret = SEC_E_INSUFFICIENT_MEMORY;
1152             cleanup_helper(helper);
1153             goto asc_end;
1154         }
1155
1156         if(pOutput->cBuffers < 1)
1157         {
1158             ret = SEC_E_INSUFFICIENT_MEMORY;
1159             cleanup_helper(helper);
1160             goto asc_end;
1161         }
1162
1163         pOutput->pBuffers[0].cbBuffer = bin_len;
1164         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1165         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1166         ret = SEC_I_CONTINUE_NEEDED;
1167
1168     }
1169     else
1170     {
1171         /* we expect a KK request from client */
1172         if(pInput == NULL)
1173         {
1174             ret = SEC_E_INCOMPLETE_MESSAGE;
1175             goto asc_end;
1176         }
1177
1178         if(pInput->cBuffers < 1)
1179         {
1180             ret = SEC_E_INCOMPLETE_MESSAGE;
1181             goto asc_end;
1182         }
1183
1184         if(!phContext)
1185         {
1186             ret = SEC_E_INVALID_HANDLE;
1187             goto asc_end;
1188         }
1189
1190         helper = (PNegoHelper)phContext->dwLower;
1191
1192         if(helper->mode != NTLM_SERVER)
1193         {
1194             ret = SEC_E_INVALID_HANDLE;
1195             goto asc_end;
1196         }
1197
1198         if(pInput->pBuffers[0].cbBuffer > max_len)
1199         {
1200             ret = SEC_E_INVALID_TOKEN;
1201             goto asc_end;
1202         }
1203         else
1204             bin_len = pInput->pBuffers[0].cbBuffer;
1205
1206         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1207
1208         lstrcpynA(buffer, "KK ", max_len-1);
1209
1210         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1211                     &buffer_len)) != SEC_E_OK)
1212         {
1213             goto asc_end;
1214         }
1215
1216         TRACE("Client sent: %s\n", debugstr_a(buffer));
1217
1218         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1219                     SEC_E_OK)
1220         {
1221             goto asc_end;
1222         }
1223
1224         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1225
1226         /* At this point, we get a NA if the user didn't authenticate, but a BH
1227          * if ntlm_auth could not connect to winbindd. Apart from running Wine
1228          * as root, there is no way to fix this for now, so just handle this as
1229          * a failed login. */
1230         if(strncmp(buffer, "AF ", 3) != 0)
1231         {
1232             if(strncmp(buffer, "NA ", 3) == 0)
1233             {
1234                 ret = SEC_E_LOGON_DENIED;
1235                 goto asc_end;
1236             }
1237             else
1238             {
1239                 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1240
1241                 if( (buffer_len >= ntlm_pipe_err_len) &&
1242                     (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1243                              ntlm_pipe_err_len) == 0))
1244                 {
1245                     TRACE("Connection to winbindd failed\n");
1246                     ret = SEC_E_LOGON_DENIED;
1247                 }
1248                 else
1249                     ret = SEC_E_INTERNAL_ERROR;
1250
1251                 goto asc_end;
1252             }
1253         }
1254         pOutput->pBuffers[0].cbBuffer = 0;
1255         ret = SEC_E_OK;
1256
1257         TRACE("Getting negotiated flags\n");
1258         lstrcpynA(buffer, "GF", max_len - 1);
1259         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1260             goto asc_end;
1261
1262         if(buffer_len < 3)
1263         {
1264             TRACE("No flags negotiated, or helper does not support GF command\n");
1265         }
1266         else
1267         {
1268             TRACE("Negotiated %s\n", debugstr_a(buffer));
1269             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
1270             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
1271         }
1272
1273         TRACE("Getting session key\n");
1274         lstrcpynA(buffer, "GK", max_len - 1);
1275         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1276             goto asc_end;
1277
1278         if(buffer_len < 3)
1279             TRACE("Helper does not support GK command\n");
1280         else
1281         {
1282             if(strncmp(buffer, "BH ", 3) == 0)
1283             {
1284                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1285                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1286                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1287                 memset(helper->session_key, 0 , 16);
1288             }
1289             else if(strncmp(buffer, "GK ", 3) == 0)
1290             {
1291                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1292                                 &bin_len)) != SEC_E_OK)
1293                 {
1294                     TRACE("Failed to decode session key\n");
1295                 }
1296                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1297                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1298                 if(!helper->session_key)
1299                 {
1300                     TRACE("Failed to allocate memory for session key\n");
1301                     ret = SEC_E_INTERNAL_ERROR;
1302                     goto asc_end;
1303                 }
1304                 memcpy(helper->session_key, bin, 16);
1305             }
1306         }
1307         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1308         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1309         helper->crypt.ntlm.seq_num = 0l;
1310     }
1311
1312     phNewContext->dwUpper = ctxt_attr;
1313     phNewContext->dwLower = (ULONG_PTR)helper;
1314
1315 asc_end:
1316     HeapFree(GetProcessHeap(), 0, want_flags);
1317     HeapFree(GetProcessHeap(), 0, buffer);
1318     HeapFree(GetProcessHeap(), 0, bin);
1319     return ret;
1320 }
1321
1322 /***********************************************************************
1323  *              CompleteAuthToken
1324  */
1325 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1326  PSecBufferDesc pToken)
1327 {
1328     /* We never need to call CompleteAuthToken anyway */
1329     TRACE("%p %p\n", phContext, pToken);
1330     if (!phContext)
1331         return SEC_E_INVALID_HANDLE;
1332
1333     return SEC_E_OK;
1334 }
1335
1336 /***********************************************************************
1337  *              DeleteSecurityContext
1338  */
1339 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1340 {
1341     PNegoHelper helper;
1342
1343     TRACE("%p\n", phContext);
1344     if (!phContext)
1345         return SEC_E_INVALID_HANDLE;
1346
1347     helper = (PNegoHelper)phContext->dwLower;
1348
1349     phContext->dwUpper = 0;
1350     phContext->dwLower = 0;
1351
1352     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1353     HeapFree(GetProcessHeap(), 0, helper->session_key);
1354     SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1355     SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1356     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1357     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1358     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1359     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1360
1361     cleanup_helper(helper);
1362
1363     return SEC_E_OK;
1364 }
1365
1366 /***********************************************************************
1367  *              QueryContextAttributesW
1368  */
1369 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1370  ULONG ulAttribute, void *pBuffer)
1371 {
1372     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1373     if (!phContext)
1374         return SEC_E_INVALID_HANDLE;
1375
1376     switch(ulAttribute)
1377     {
1378 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1379         _x(SECPKG_ATTR_ACCESS_TOKEN);
1380         _x(SECPKG_ATTR_AUTHORITY);
1381         _x(SECPKG_ATTR_DCE_INFO);
1382         case SECPKG_ATTR_FLAGS:
1383         {
1384             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1385             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1386
1387             spcf->Flags = 0;
1388             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1389                 spcf->Flags |= ISC_RET_INTEGRITY;
1390             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1391                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1392             return SEC_E_OK;
1393         }
1394         _x(SECPKG_ATTR_KEY_INFO);
1395         _x(SECPKG_ATTR_LIFESPAN);
1396         _x(SECPKG_ATTR_NAMES);
1397         _x(SECPKG_ATTR_NATIVE_NAMES);
1398         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1399         _x(SECPKG_ATTR_PACKAGE_INFO);
1400         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1401         _x(SECPKG_ATTR_SESSION_KEY);
1402         case SECPKG_ATTR_SIZES:
1403         {
1404             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1405             spcs->cbMaxToken = NTLM_MAX_BUF;
1406             spcs->cbMaxSignature = 16;
1407             spcs->cbBlockSize = 0;
1408             spcs->cbSecurityTrailer = 16;
1409             return SEC_E_OK;
1410         }
1411         _x(SECPKG_ATTR_STREAM_SIZES);
1412         _x(SECPKG_ATTR_TARGET_INFORMATION);
1413 #undef _x
1414         default:
1415             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1416     }
1417
1418     return SEC_E_UNSUPPORTED_FUNCTION;
1419 }
1420
1421 /***********************************************************************
1422  *              QueryContextAttributesA
1423  */
1424 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1425  ULONG ulAttribute, void *pBuffer)
1426 {
1427     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1428 }
1429
1430 /***********************************************************************
1431  *              ImpersonateSecurityContext
1432  */
1433 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1434 {
1435     SECURITY_STATUS ret;
1436
1437     TRACE("%p\n", phContext);
1438     if (phContext)
1439     {
1440         ret = SEC_E_UNSUPPORTED_FUNCTION;
1441     }
1442     else
1443     {
1444         ret = SEC_E_INVALID_HANDLE;
1445     }
1446     return ret;
1447 }
1448
1449 /***********************************************************************
1450  *              RevertSecurityContext
1451  */
1452 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1453 {
1454     SECURITY_STATUS ret;
1455
1456     TRACE("%p\n", phContext);
1457     if (phContext)
1458     {
1459         ret = SEC_E_UNSUPPORTED_FUNCTION;
1460     }
1461     else
1462     {
1463         ret = SEC_E_INVALID_HANDLE;
1464     }
1465     return ret;
1466 }
1467
1468 /***********************************************************************
1469  *             ntlm_CreateSignature
1470  * As both MakeSignature and VerifySignature need this, but different keys
1471  * are needed for NTLMv2, the logic goes into a helper function.
1472  * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1473  * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1474  * the signature is encrypted after the message was encrypted, so
1475  * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1476  * false.
1477  */
1478 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1479         int token_idx, SignDirection direction, BOOL encrypt_sig)
1480 {
1481     ULONG sign_version = 1;
1482     UINT i;
1483     PBYTE sig;
1484     TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1485             encrypt_sig);
1486
1487     sig = pMessage->pBuffers[token_idx].pvBuffer;
1488
1489     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1490             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1491     {
1492         BYTE digest[16];
1493         BYTE seq_no[4];
1494         HMAC_MD5_CTX hmac_md5_ctx;
1495
1496         TRACE("Signing NTLM2 style\n");
1497
1498         if(direction == NTLM_SEND)
1499         {
1500             seq_no[0] = (helper->crypt.ntlm2.send_seq_no >>  0) & 0xff;
1501             seq_no[1] = (helper->crypt.ntlm2.send_seq_no >>  8) & 0xff;
1502             seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1503             seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1504
1505             ++(helper->crypt.ntlm2.send_seq_no);
1506
1507             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1508         }
1509         else
1510         {
1511             seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >>  0) & 0xff;
1512             seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >>  8) & 0xff;
1513             seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1514             seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1515
1516             ++(helper->crypt.ntlm2.recv_seq_no);
1517
1518             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1519         }
1520
1521         HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1522         for( i = 0; i < pMessage->cBuffers; ++i )
1523         {
1524             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1525                 HMACMD5Update(&hmac_md5_ctx, pMessage->pBuffers[i].pvBuffer,
1526                         pMessage->pBuffers[i].cbBuffer);
1527         }
1528
1529         HMACMD5Final(&hmac_md5_ctx, digest);
1530
1531         if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1532         {
1533             if(direction == NTLM_SEND)
1534                 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1535             else
1536                 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1537         }
1538
1539         /* The NTLM2 signature is the sign version */
1540         sig[ 0] = (sign_version >>  0) & 0xff;
1541         sig[ 1] = (sign_version >>  8) & 0xff;
1542         sig[ 2] = (sign_version >> 16) & 0xff;
1543         sig[ 3] = (sign_version >> 24) & 0xff;
1544         /* The first 8 bytes of the digest */
1545         memcpy(sig+4, digest, 8);
1546         /* And the sequence number */
1547         memcpy(sig+12, seq_no, 4);
1548
1549         pMessage->pBuffers[token_idx].cbBuffer = 16;
1550
1551         return SEC_E_OK;
1552     }
1553     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1554     {
1555         ULONG crc = 0U;
1556         TRACE("Signing NTLM1 style\n");
1557
1558         for(i=0; i < pMessage->cBuffers; ++i)
1559         {
1560             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1561             {
1562                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1563                     pMessage->pBuffers[i].cbBuffer, crc);
1564             }
1565         }
1566
1567         sig[ 0] = (sign_version >>  0) & 0xff;
1568         sig[ 1] = (sign_version >>  8) & 0xff;
1569         sig[ 2] = (sign_version >> 16) & 0xff;
1570         sig[ 3] = (sign_version >> 24) & 0xff;
1571         memset(sig+4, 0, 4);
1572         sig[ 8] = (crc >>  0) & 0xff;
1573         sig[ 9] = (crc >>  8) & 0xff;
1574         sig[10] = (crc >> 16) & 0xff;
1575         sig[11] = (crc >> 24) & 0xff;
1576         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1577         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1578         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1579         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1580
1581         ++(helper->crypt.ntlm.seq_num);
1582
1583         if(encrypt_sig)
1584             SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1585         return SEC_E_OK;
1586     }
1587
1588     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1589     {
1590         TRACE("Creating a dummy signature.\n");
1591         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1592         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1593         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1594         pMessage->pBuffers[token_idx].cbBuffer = 16;
1595         return SEC_E_OK;
1596     }
1597
1598     return SEC_E_UNSUPPORTED_FUNCTION;
1599 }
1600
1601 /***********************************************************************
1602  *              MakeSignature
1603  */
1604 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1605  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1606 {
1607     PNegoHelper helper;
1608     int token_idx;
1609
1610     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1611     if (!phContext)
1612         return SEC_E_INVALID_HANDLE;
1613
1614     if(fQOP)
1615         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1616
1617     if(MessageSeqNo)
1618         FIXME("Ignoring MessageSeqNo\n");
1619
1620     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1621         return SEC_E_INVALID_TOKEN;
1622
1623     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1624     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1625         return SEC_E_INVALID_TOKEN;
1626
1627     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1628         return SEC_E_BUFFER_TOO_SMALL;
1629
1630     helper = (PNegoHelper)phContext->dwLower;
1631     TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1632
1633     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1634 }
1635
1636 /***********************************************************************
1637  *              VerifySignature
1638  */
1639 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1640  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1641 {
1642     PNegoHelper helper;
1643     ULONG fQOP = 0;
1644     UINT i;
1645     int token_idx;
1646     SECURITY_STATUS ret;
1647     SecBufferDesc local_desc;
1648     PSecBuffer     local_buff;
1649     BYTE          local_sig[16];
1650
1651     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1652     if(!phContext)
1653         return SEC_E_INVALID_HANDLE;
1654
1655     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1656         return SEC_E_INVALID_TOKEN;
1657
1658     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1659         return SEC_E_INVALID_TOKEN;
1660
1661     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1662         return SEC_E_BUFFER_TOO_SMALL;
1663
1664     if(MessageSeqNo)
1665         FIXME("Ignoring MessageSeqNo\n");
1666
1667     helper = (PNegoHelper)phContext->dwLower;
1668     TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1669
1670     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1671
1672     local_desc.ulVersion = SECBUFFER_VERSION;
1673     local_desc.cBuffers = pMessage->cBuffers;
1674     local_desc.pBuffers = local_buff;
1675
1676     for(i=0; i < pMessage->cBuffers; ++i)
1677     {
1678         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1679         {
1680             local_buff[i].BufferType = SECBUFFER_TOKEN;
1681             local_buff[i].cbBuffer = 16;
1682             local_buff[i].pvBuffer = local_sig;
1683         }
1684         else
1685         {
1686             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1687             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1688             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1689         }
1690     }
1691
1692     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1693         return ret;
1694
1695     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1696                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1697         ret = SEC_E_MESSAGE_ALTERED;
1698     else
1699         ret = SEC_E_OK;
1700
1701     HeapFree(GetProcessHeap(), 0, local_buff);
1702     pfQOP = &fQOP;
1703
1704     return ret;
1705
1706 }
1707
1708 /***********************************************************************
1709  *             FreeCredentialsHandle
1710  */
1711 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1712         PCredHandle phCredential)
1713 {
1714     SECURITY_STATUS ret;
1715
1716     if(phCredential){
1717         PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1718         phCredential->dwUpper = 0;
1719         phCredential->dwLower = 0;
1720         if (ntlm_cred->password)
1721             memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1722         HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1723         HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1724         HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
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 }