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

   1 /*
   2  * Copyright 2005, 2006 Kai Blin
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  * This file implements the NTLM security provider.
  19  */
  20
  21 #include <assert.h>
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "winnls.h"
  27 #include "rpc.h"
  28 #include "sspi.h"
  29 #include "lm.h"
  30 #include "secur32_priv.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(secur32);
  34
  35 #define NTLM_MAX_BUF 1904
  36
  37
  38 static CHAR ntlm_auth[] = "ntlm_auth";
  39
  40 /***********************************************************************
  41  *              QueryCredentialsAttributesA
  42  */
  43 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
  44         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  45 {
  46     SECURITY_STATUS ret;
  47
  48     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  49
  50     if(ulAttribute == SECPKG_ATTR_NAMES)
  51     {
  52         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  53         ret = SEC_E_UNSUPPORTED_FUNCTION;
  54     }
  55     else
  56         ret = SEC_E_UNSUPPORTED_FUNCTION;
  57
  58     return ret;
  59 }
  60
  61 /***********************************************************************
  62  *              QueryCredentialsAttributesW
  63  */
  64 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
  65         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  66 {
  67     SECURITY_STATUS ret;
  68
  69     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  70
  71     if(ulAttribute == SECPKG_ATTR_NAMES)
  72     {
  73         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  74         ret = SEC_E_UNSUPPORTED_FUNCTION;
  75     }
  76     else
  77         ret = SEC_E_UNSUPPORTED_FUNCTION;
  78
  79     return ret;
  80 }
  81
  82 /***********************************************************************
  83  *              AcquireCredentialsHandleW
  84  */
  85 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
  86  SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
  87  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
  88  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
  89 {
  90     SECURITY_STATUS ret;
  91     PNegoHelper helper = NULL;
  92     static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp",
  93                 credentials_argv[] = "--use-cached-creds";
  94
  95     SEC_CHAR *client_user_arg = NULL;
  96     SEC_CHAR *client_domain_arg = NULL;
  97     SEC_WCHAR *username = NULL, *domain = NULL;
  98
  99     SEC_CHAR *client_argv[6];
 100     SEC_CHAR *server_argv[] = { ntlm_auth,
 101         server_helper_protocol,
 102         NULL };
 103
 104     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 105      debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
 106      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 107
 108
 109     switch(fCredentialUse)
 110     {
 111         case SECPKG_CRED_INBOUND:
 112             if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
 113                     SEC_E_OK)
 114             {
 115                 phCredential = NULL;
 116                 break;
 117             }
 118             else
 119             {
 120                 helper->mode = NTLM_SERVER;
 121                 phCredential->dwUpper = fCredentialUse;
 122                 phCredential->dwLower = (ULONG_PTR)helper;
 123             }
 124             ret = SEC_E_OK;
 125             break;
 126         case SECPKG_CRED_OUTBOUND:
 127             {
 128                 static const char username_arg[] = "--username=";
 129                 static const char domain_arg[] = "--domain=";
 130                 static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
 131                 int unixcp_size;
 132
 133                 if(pAuthData == NULL)
 134                 {
 135                     LPWKSTA_USER_INFO_1 ui = NULL;
 136                     NET_API_STATUS status;
 137
 138                     status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
 139                     if (status != NERR_Success || ui == NULL)
 140                     {
 141                         ret = SEC_E_NO_CREDENTIALS;
 142                         phCredential = NULL;
 143                         break;
 144                     }
 145
 146                     username = HeapAlloc(GetProcessHeap(), 0,
 147                             (lstrlenW(ui->wkui1_username)+1) *
 148                             sizeof(SEC_WCHAR));
 149                     lstrcpyW(username, ui->wkui1_username);
 150
 151                     /* same for the domain */
 152                     domain = HeapAlloc(GetProcessHeap(), 0,
 153                             (lstrlenW(ui->wkui1_logon_domain)+1) *
 154                             sizeof(SEC_WCHAR));
 155                     lstrcpyW(domain, ui->wkui1_logon_domain);
 156                     NetApiBufferFree(ui);
 157                 }
 158                 else
 159                 {
 160                     PSEC_WINNT_AUTH_IDENTITY_W auth_data =
 161                         (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
 162
 163                     if (!auth_data->UserLength || !auth_data->DomainLength)
 164                     {
 165                         ret = SEC_E_NO_CREDENTIALS;
 166                         phCredential = NULL;
 167                         break;
 168                     }
 169                     /* Get username and domain from pAuthData */
 170                     username = HeapAlloc(GetProcessHeap(), 0,
 171                             (auth_data->UserLength + 1) * sizeof(SEC_WCHAR));
 172                     lstrcpyW(username, auth_data->User);
 173
 174                     domain = HeapAlloc(GetProcessHeap(), 0,
 175                             (auth_data->DomainLength + 1) * sizeof(SEC_WCHAR));
 176                     lstrcpyW(domain, auth_data->Domain);
 177                 }
 178                 TRACE("Username is %s\n", debugstr_w(username));
 179                 unixcp_size =  WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 180                         username, -1, NULL, 0, NULL, NULL) + sizeof(username_arg);
 181                 client_user_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 182                 lstrcpyA(client_user_arg, username_arg);
 183                 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, username, -1,
 184                         client_user_arg + sizeof(username_arg) - 1,
 185                         unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
 186
 187                 TRACE("Domain name is %s\n", debugstr_w(domain));
 188                 unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 189                         domain, -1, NULL, 0,  NULL, NULL) + sizeof(domain_arg);
 190                 client_domain_arg = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 191                 lstrcpyA(client_domain_arg, domain_arg);
 192                 WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domain,
 193                         -1, client_domain_arg + sizeof(domain_arg) - 1,
 194                         unixcp_size - sizeof(domain) + 1, NULL, NULL);
 195
 196                 client_argv[0] = ntlm_auth;
 197                 client_argv[1] = helper_protocol;
 198                 client_argv[2] = client_user_arg;
 199                 client_argv[3] = client_domain_arg;
 200                 client_argv[4] = credentials_argv;
 201                 client_argv[5] = NULL;
 202
 203                 if((ret = fork_helper(&helper, ntlm_auth, client_argv)) !=
 204                         SEC_E_OK)
 205                 {
 206                     phCredential = NULL;
 207                     break;
 208                 }
 209                 else
 210                 {
 211                     helper->mode = NTLM_CLIENT;
 212
 213                     if(pAuthData != NULL)
 214                     {
 215                         PSEC_WINNT_AUTH_IDENTITY_W auth_data =
 216                            (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
 217
 218                         if(auth_data->PasswordLength != 0)
 219                         {
 220                             helper->pwlen = WideCharToMultiByte(CP_UNIXCP,
 221                                 WC_NO_BEST_FIT_CHARS, auth_data->Password,
 222                                 auth_data->PasswordLength+1, NULL, 0, NULL, NULL);
 223
 224                             helper->password = HeapAlloc(GetProcessHeap(), 0,
 225                                     helper->pwlen);
 226
 227                             WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 228                                 auth_data->Password, auth_data->PasswordLength+1,
 229                                 helper->password, helper->pwlen, NULL, NULL);
 230                         }
 231                     }
 232
 233                     phCredential->dwUpper = fCredentialUse;
 234                     phCredential->dwLower = (ULONG_PTR)helper;
 235                     TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
 236                             phCredential->dwUpper, phCredential->dwLower);
 237                 }
 238                 ret = SEC_E_OK;
 239                 break;
 240             }
 241         case SECPKG_CRED_BOTH:
 242             FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
 243             ret = SEC_E_UNSUPPORTED_FUNCTION;
 244             phCredential = NULL;
 245             break;
 246         default:
 247             phCredential = NULL;
 248             ret = SEC_E_UNKNOWN_CREDENTIALS;
 249     }
 250
 251
 252     HeapFree(GetProcessHeap(), 0, client_user_arg);
 253     HeapFree(GetProcessHeap(), 0, client_domain_arg);
 254     HeapFree(GetProcessHeap(), 0, username);
 255     HeapFree(GetProcessHeap(), 0, domain);
 256
 257     return ret;
 258 }
 259
 260 /***********************************************************************
 261  *              AcquireCredentialsHandleA
 262  */
 263 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
 264  SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
 265  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 266  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 267 {
 268     SECURITY_STATUS ret;
 269     int user_sizeW, domain_sizeW, passwd_sizeW;
 270
 271     SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
 272
 273     PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
 274     PSEC_WINNT_AUTH_IDENTITY_A identity  = NULL;
 275
 276     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 277      debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
 278      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 279
 280     if(pszPackage != NULL)
 281     {
 282         int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
 283                 NULL, 0);
 284
 285         package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
 286                 sizeof(SEC_WCHAR));
 287         MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
 288     }
 289
 290
 291     if(pAuthData != NULL)
 292     {
 293         identity = (PSEC_WINNT_AUTH_IDENTITY_A)pAuthData;
 294
 295         if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
 296         {
 297             pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
 298                     sizeof(SEC_WINNT_AUTH_IDENTITY_W));
 299
 300             if(identity->UserLength != 0)
 301             {
 302                 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
 303                     (LPCSTR)identity->User, identity->UserLength+1, NULL, 0);
 304                 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
 305                         sizeof(SEC_WCHAR));
 306                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
 307                     identity->UserLength+1, user, user_sizeW);
 308             }
 309             else
 310             {
 311                 user_sizeW = 0;
 312             }
 313
 314             if(identity->DomainLength != 0)
 315             {
 316                 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
 317                     (LPCSTR)identity->Domain, identity->DomainLength+1, NULL, 0);
 318                 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
 319                     * sizeof(SEC_WCHAR));
 320                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
 321                     identity->DomainLength+1, domain, domain_sizeW);
 322             }
 323             else
 324             {
 325                 domain_sizeW = 0;
 326             }
 327
 328             if(identity->PasswordLength != 0)
 329             {
 330                 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
 331                     (LPCSTR)identity->Password, identity->PasswordLength+1,
 332                     NULL, 0);
 333                 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
 334                     * sizeof(SEC_WCHAR));
 335                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
 336                     identity->PasswordLength+1, passwd, passwd_sizeW);
 337             }
 338             else
 339             {
 340                 passwd_sizeW = 0;
 341             }
 342
 343             pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
 344             pAuthDataW->User = user;
 345             pAuthDataW->UserLength = user_sizeW;
 346             pAuthDataW->Domain = domain;
 347             pAuthDataW->DomainLength = domain_sizeW;
 348             pAuthDataW->Password = passwd;
 349             pAuthDataW->PasswordLength = passwd_sizeW;
 350         }
 351         else
 352         {
 353             pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
 354         }
 355     }
 356
 357     ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
 358             pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
 359             ptsExpiry);
 360
 361     HeapFree(GetProcessHeap(), 0, package);
 362     HeapFree(GetProcessHeap(), 0, user);
 363     HeapFree(GetProcessHeap(), 0, domain);
 364     HeapFree(GetProcessHeap(), 0, passwd);
 365     if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
 366         HeapFree(GetProcessHeap(), 0, pAuthDataW);
 367
 368     return ret;
 369 }
 370
 371 /***********************************************************************
 372  *              InitializeSecurityContextW
 373  */
 374 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
 375  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 376  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 377  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 378  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 379 {
 380     SECURITY_STATUS ret;
 381     PNegoHelper helper;
 382     ULONG ctxt_attr = 0;
 383     char* buffer, *want_flags = NULL;
 384     PBYTE bin;
 385     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 386
 387     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 388      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 389      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 390
 391     if(!phCredential)
 392         return SEC_E_INVALID_HANDLE;
 393
 394     /* As the server side of sspi never calls this, make sure that
 395      * the handler is a client handler.
 396      */
 397     helper = (PNegoHelper)phCredential->dwLower;
 398     if(helper->mode != NTLM_CLIENT)
 399     {
 400         TRACE("Helper mode = %d\n", helper->mode);
 401         return SEC_E_INVALID_HANDLE;
 402     }
 403
 404     /****************************************
 405      * When communicating with the client, there can be the
 406      * following reply packets:
 407      * YR <base64 blob>         should be sent to the server
 408      * PW                       should be sent back to helper with
 409      *                          base64 encoded password
 410      * AF <base64 blob>         client is done, blob should be
 411      *                          sent to server with KK prefixed
 412      * GF <string list>         A string list of negotiated flags
 413      * GK <base64 blob>         base64 encoded session key
 414      * BH <char reason>         something broke
 415      */
 416     /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
 417
 418     if (pszTargetName)
 419     {
 420         TRACE("According to a MS whitepaper pszTargetName is ignored.\n");
 421     }
 422
 423     if(TargetDataRep == SECURITY_NETWORK_DREP){
 424         TRACE("Setting SECURITY_NETWORK_DREP\n");
 425     }
 426
 427     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 428     bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
 429
 430     if((phContext == NULL) && (pInput == NULL))
 431     {
 432         TRACE("First time in ISC()\n");
 433         /* Allocate space for a maximal string of
 434          * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
 435          * NTLMSSP_FEATURE_SESSION_KEY"
 436          */
 437         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 438         if(want_flags == NULL)
 439         {
 440             ret = SEC_E_INSUFFICIENT_MEMORY;
 441             goto isc_end;
 442         }
 443         lstrcpyA(want_flags, "SF");
 444         if(fContextReq & ISC_REQ_CONFIDENTIALITY)
 445             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 446         if(fContextReq & ISC_REQ_CONNECTION)
 447         {
 448             /* This is default, so we'll enable it */
 449             ctxt_attr |= ISC_RET_CONNECTION;
 450             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
 451         }
 452         if(fContextReq & ISC_REQ_EXTENDED_ERROR)
 453             FIXME("ISC_REQ_EXTENDED_ERROR\n");
 454         if(fContextReq & ISC_REQ_INTEGRITY)
 455             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 456         if(fContextReq & ISC_REQ_MUTUAL_AUTH)
 457             FIXME("ISC_REQ_MUTUAL_AUTH\n");
 458         if(fContextReq & ISC_REQ_REPLAY_DETECT)
 459             FIXME("ISC_REQ_REPLAY_DETECT\n");
 460         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 461             FIXME("ISC_REQ_SEQUENCE_DETECT\n");
 462         if(fContextReq & ISC_REQ_STREAM)
 463             FIXME("ISC_REQ_STREAM\n");
 464
 465         /* If no password is given, try to use cached credentials. Fall back to an empty
 466          * password if this failed. */
 467         if(helper->password == NULL)
 468         {
 469             lstrcpynA(buffer, "OK", max_len-1);
 470             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 471                 goto isc_end;
 472             /* If the helper replied with "PW", using cached credentials failed */
 473             if(!strncmp(buffer, "PW", 2))
 474             {
 475                 TRACE("Using cached credentials failed. Using empty password.\n");
 476                 lstrcpynA(buffer, "PW AA==", max_len-1);
 477             }
 478             else /* Just do a noop on the next run */
 479                 lstrcpynA(buffer, "OK", max_len-1);
 480         }
 481         else
 482         {
 483             lstrcpynA(buffer, "PW ", max_len-1);
 484             if((ret = encodeBase64((unsigned char*)helper->password,
 485                         helper->pwlen-2, buffer+3,
 486                         max_len-3, &buffer_len)) != SEC_E_OK)
 487             {
 488                 TRACE("Deleting password!\n");
 489                 memset(helper->password, 0, helper->pwlen-2);
 490                 HeapFree(GetProcessHeap(), 0, helper->password);
 491                 goto isc_end;
 492             }
 493
 494         }
 495
 496         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 497         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 498             goto isc_end;
 499
 500         TRACE("Helper returned %s\n", debugstr_a(buffer));
 501
 502         if(lstrlenA(want_flags) > 2)
 503         {
 504             TRACE("Want flags are '%s'\n", debugstr_a(want_flags));
 505             lstrcpynA(buffer, want_flags, max_len-1);
 506             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 507                     != SEC_E_OK)
 508                 goto isc_end;
 509             if(!strncmp(buffer, "BH", 2))
 510                 TRACE("Helper doesn't understand new command set\n");
 511         }
 512
 513         lstrcpynA(buffer, "YR", max_len-1);
 514
 515         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 516             goto isc_end;
 517
 518         TRACE("%s\n", buffer);
 519
 520         if(strncmp(buffer, "YR ", 3) != 0)
 521         {
 522             /* Something borked */
 523             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 524             ret = SEC_E_INTERNAL_ERROR;
 525             goto isc_end;
 526         }
 527         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 528                         max_len-1, &bin_len)) != SEC_E_OK)
 529             goto isc_end;
 530
 531         /* Mask away the NTLMv2 flag, as well as the key exchange flag */
 532         bin[14] &= ~0x08;
 533         bin[15] &= ~0x40;
 534
 535         /* put the decoded client blob into the out buffer */
 536
 537         ret = SEC_I_CONTINUE_NEEDED;
 538     }
 539     else
 540     {
 541         /* handle second call here */
 542         /* encode server data to base64 */
 543         if (!pInput || !pInput->cBuffers)
 544         {
 545             ret = SEC_E_INCOMPLETE_MESSAGE;
 546             goto isc_end;
 547         }
 548
 549         if (!pInput->pBuffers[0].pvBuffer)
 550         {
 551             ret = SEC_E_INTERNAL_ERROR;
 552             goto isc_end;
 553         }
 554
 555         if(pInput->pBuffers[0].cbBuffer > max_len)
 556         {
 557             TRACE("pInput->pBuffers[0].cbBuffer is: %ld\n",
 558                     pInput->pBuffers[0].cbBuffer);
 559             ret = SEC_E_INVALID_TOKEN;
 560             goto isc_end;
 561         }
 562         else
 563             bin_len = pInput->pBuffers[0].cbBuffer;
 564
 565         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
 566
 567         lstrcpynA(buffer, "TT ", max_len-1);
 568
 569         if((ret = encodeBase64(bin, bin_len, buffer+3,
 570                         max_len-3, &buffer_len)) != SEC_E_OK)
 571             goto isc_end;
 572
 573         TRACE("Server sent: %s\n", debugstr_a(buffer));
 574
 575         /* send TT base64 blob to ntlm_auth */
 576         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 577             goto isc_end;
 578
 579         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 580
 581         if( (strncmp(buffer, "KK ", 3) != 0) &&
 582                 (strncmp(buffer, "AF ", 3) !=0))
 583         {
 584             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 585             ret = SEC_E_INVALID_TOKEN;
 586             goto isc_end;
 587         }
 588
 589         /* decode the blob and send it to server */
 590         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 591                         &bin_len)) != SEC_E_OK)
 592         {
 593             goto isc_end;
 594         }
 595
 596         phNewContext->dwUpper = ctxt_attr;
 597         phNewContext->dwLower = (ULONG_PTR)helper;
 598
 599         ret = SEC_E_OK;
 600     }
 601
 602     /* put the decoded client blob into the out buffer */
 603
 604     if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
 605     {
 606         if (pOutput)
 607         {
 608             pOutput->cBuffers = 1;
 609             pOutput->pBuffers[0].pvBuffer = SECUR32_ALLOC(bin_len);
 610             pOutput->pBuffers[0].cbBuffer = bin_len;
 611         }
 612     }
 613
 614     if (!pOutput || !pOutput->cBuffers || pOutput->pBuffers[0].cbBuffer < bin_len)
 615     {
 616         TRACE("out buffer is NULL or has not enough space\n");
 617         ret = SEC_E_BUFFER_TOO_SMALL;
 618         goto isc_end;
 619     }
 620
 621     if (!pOutput->pBuffers[0].pvBuffer)
 622     {
 623         TRACE("out buffer is NULL\n");
 624         ret = SEC_E_INTERNAL_ERROR;
 625         goto isc_end;
 626     }
 627
 628     pOutput->pBuffers[0].cbBuffer = bin_len;
 629     pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
 630     memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
 631
 632     if(ret == SEC_E_OK)
 633     {
 634         TRACE("Getting negotiated flags\n");
 635         lstrcpynA(buffer, "GF", max_len - 1);
 636         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 637             goto isc_end;
 638
 639         if(buffer_len < 3)
 640         {
 641             TRACE("No flags negotiated, or helper does not support GF command\n");
 642             helper->neg_flags = 0l;
 643         }
 644         else
 645         {
 646             TRACE("Negotiated %s\n", debugstr_a(buffer));
 647             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
 648             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
 649         }
 650
 651         TRACE("Getting session key\n");
 652         lstrcpynA(buffer, "GK", max_len - 1);
 653         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 654             goto isc_end;
 655
 656         if(strncmp(buffer, "BH", 2) == 0)
 657         {
 658             TRACE("Helper does not understand command or no key negotiated.\n");
 659             helper->valid_session_key = FALSE;
 660             helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 661             /*Generate the dummy session key = MD4(MD4(password))*/
 662             if(helper->password)
 663             {
 664                 SEC_WCHAR *unicode_password;
 665                 int passwd_lenW;
 666
 667                 TRACE("Converting password to unicode.\n");
 668                 passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 669                         (LPCSTR)helper->password, helper->pwlen,
 670                         NULL, 0);
 671                 unicode_password = HeapAlloc(GetProcessHeap(), 0,
 672                         passwd_lenW * sizeof(SEC_WCHAR));
 673                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)helper->password,
 674                         helper->pwlen, unicode_password, passwd_lenW);
 675
 676                 SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
 677                         lstrlenW(unicode_password) * sizeof(SEC_WCHAR), helper->session_key);
 678
 679                 HeapFree(GetProcessHeap(), 0, unicode_password);
 680             }
 681             else
 682                 memset(helper->session_key, 0, 16);
 683         }
 684         else if(strncmp(buffer, "GK ", 3) == 0)
 685         {
 686             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 687                             &bin_len)) != SEC_E_OK)
 688             {
 689                 TRACE("Failed to decode session key\n");
 690             }
 691             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 692             helper->valid_session_key = TRUE;
 693             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 694             if(!helper->session_key)
 695             {
 696                 TRACE("Failed to allocate memory for session key\n");
 697                 ret = SEC_E_INTERNAL_ERROR;
 698                 goto isc_end;
 699             }
 700             memcpy(helper->session_key, bin, bin_len);
 701         }
 702
 703         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 704         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 705         helper->crypt.ntlm.seq_num = 0l;
 706     }
 707
 708     if(ret != SEC_I_CONTINUE_NEEDED)
 709     {
 710         TRACE("Deleting password!\n");
 711         if(helper->password)
 712             memset(helper->password, 0, helper->pwlen-2);
 713         HeapFree(GetProcessHeap(), 0, helper->password);
 714     }
 715 isc_end:
 716     HeapFree(GetProcessHeap(), 0, want_flags);
 717     HeapFree(GetProcessHeap(), 0, buffer);
 718     HeapFree(GetProcessHeap(), 0, bin);
 719     return ret;
 720 }
 721
 722 /***********************************************************************
 723  *              InitializeSecurityContextA
 724  */
 725 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 726  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 727  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 728  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 729  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 730 {
 731     SECURITY_STATUS ret;
 732
 733     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 734      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 735      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 736
 737     if (phCredential)
 738     {
 739         SEC_WCHAR *target = NULL;
 740         if(pszTargetName != NULL)
 741         {
 742             int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 743                 strlen(pszTargetName)+1, NULL, 0);
 744             target = HeapAlloc(GetProcessHeap(), 0, target_size *
 745                     sizeof(SEC_WCHAR));
 746             MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 747                 target, target_size);
 748         }
 749
 750         ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 751                 fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 752                 phNewContext, pOutput, pfContextAttr, ptsExpiry);
 753
 754         HeapFree(GetProcessHeap(), 0, target);
 755     }
 756     else
 757     {
 758         ret = SEC_E_INVALID_HANDLE;
 759     }
 760     return ret;
 761 }
 762
 763 /***********************************************************************
 764  *              AcceptSecurityContext
 765  */
 766 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 767  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 768  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 769  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 770 {
 771     SECURITY_STATUS ret;
 772     char *buffer, *want_flags = NULL;
 773     PBYTE bin;
 774     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 775     ULONG ctxt_attr = 0;
 776     PNegoHelper helper;
 777
 778     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 779      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 780      ptsExpiry);
 781
 782     if (!phCredential)
 783         return SEC_E_INVALID_HANDLE;
 784
 785     helper = (PNegoHelper)phCredential->dwLower;
 786
 787     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 788     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 789
 790     if(helper->mode != NTLM_SERVER)
 791     {
 792         ret = SEC_E_INVALID_HANDLE;
 793         goto asc_end;
 794     }
 795
 796     if(TargetDataRep == SECURITY_NETWORK_DREP){
 797         TRACE("Using SECURITY_NETWORK_DREP\n");
 798     }
 799
 800     if(phContext == NULL)
 801     {
 802         /* This is the first call to AcceptSecurityHandle */
 803         if(pInput == NULL)
 804         {
 805             ret = SEC_E_INCOMPLETE_MESSAGE;
 806             goto asc_end;
 807         }
 808
 809         if(pInput->cBuffers < 1)
 810         {
 811             ret = SEC_E_INCOMPLETE_MESSAGE;
 812             goto asc_end;
 813         }
 814
 815         if(pInput->pBuffers[0].cbBuffer > max_len)
 816         {
 817             ret = SEC_E_INVALID_TOKEN;
 818             goto asc_end;
 819         }
 820         else
 821             bin_len = pInput->pBuffers[0].cbBuffer;
 822
 823         /* Handle all the flags */
 824         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 825         if(want_flags == NULL)
 826         {
 827             TRACE("Failed to allocate memory for the want_flags!\n");
 828             ret = SEC_E_INSUFFICIENT_MEMORY;
 829             goto asc_end;
 830         }
 831         lstrcpyA(want_flags, "SF");
 832         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
 833         {
 834             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
 835         }
 836         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
 837         {
 838             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 839         }
 840         if(fContextReq & ASC_REQ_CONNECTION)
 841         {
 842             /* This is default, so we'll enable it */
 843             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
 844             ctxt_attr |= ASC_RET_CONNECTION;
 845         }
 846         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
 847         {
 848             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
 849         }
 850         if(fContextReq & ASC_REQ_INTEGRITY)
 851         {
 852             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 853         }
 854         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
 855         {
 856             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
 857         }
 858         if(fContextReq & ASC_REQ_REPLAY_DETECT)
 859         {
 860             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
 861         }
 862         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 863         {
 864             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
 865         }
 866         if(fContextReq & ISC_REQ_STREAM)
 867         {
 868             FIXME("ASC_REQ_STREAM stub\n");
 869         }
 870         /* Done with the flags */
 871
 872         if(lstrlenA(want_flags) > 3)
 873         {
 874             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
 875             lstrcpynA(buffer, want_flags, max_len - 1);
 876             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
 877                     SEC_E_OK)
 878                 goto asc_end;
 879             if(!strncmp(buffer, "BH", 2))
 880                 TRACE("Helper doesn't understand new command set\n");
 881         }
 882
 883         /* This is the YR request from the client, encode to base64 */
 884
 885         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
 886
 887         lstrcpynA(buffer, "YR ", max_len-1);
 888
 889         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
 890                     &buffer_len)) != SEC_E_OK)
 891         {
 892             goto asc_end;
 893         }
 894
 895         TRACE("Client sent: %s\n", debugstr_a(buffer));
 896
 897         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
 898                     SEC_E_OK)
 899         {
 900             goto asc_end;
 901         }
 902
 903         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
 904         /* The expected answer is TT <base64 blob> */
 905
 906         if(strncmp(buffer, "TT ", 3) != 0)
 907         {
 908             ret = SEC_E_INTERNAL_ERROR;
 909             goto asc_end;
 910         }
 911
 912         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 913                         &bin_len)) != SEC_E_OK)
 914         {
 915             goto asc_end;
 916         }
 917
 918         /* send this to the client */
 919         if(pOutput == NULL)
 920         {
 921             ret = SEC_E_INSUFFICIENT_MEMORY;
 922             goto asc_end;
 923         }
 924
 925         if(pOutput->cBuffers < 1)
 926         {
 927             ret = SEC_E_INSUFFICIENT_MEMORY;
 928             goto asc_end;
 929         }
 930
 931         pOutput->pBuffers[0].cbBuffer = bin_len;
 932         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
 933         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
 934         ret = SEC_I_CONTINUE_NEEDED;
 935
 936     }
 937     else
 938     {
 939         /* we expect a KK request from client */
 940         if(pInput == NULL)
 941         {
 942             ret = SEC_E_INCOMPLETE_MESSAGE;
 943             goto asc_end;
 944         }
 945
 946         if(pInput->cBuffers < 1)
 947         {
 948             ret = SEC_E_INCOMPLETE_MESSAGE;
 949             goto asc_end;
 950         }
 951
 952         if(pInput->pBuffers[0].cbBuffer > max_len)
 953         {
 954             ret = SEC_E_INVALID_TOKEN;
 955             goto asc_end;
 956         }
 957         else
 958             bin_len = pInput->pBuffers[0].cbBuffer;
 959
 960         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
 961
 962         lstrcpynA(buffer, "KK ", max_len-1);
 963
 964         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
 965                     &buffer_len)) != SEC_E_OK)
 966         {
 967             goto asc_end;
 968         }
 969
 970         TRACE("Client sent: %s\n", debugstr_a(buffer));
 971
 972         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
 973                     SEC_E_OK)
 974         {
 975             goto asc_end;
 976         }
 977
 978         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
 979
 980         if(strncmp(buffer, "AF ", 3) != 0)
 981         {
 982             if(strncmp(buffer, "NA ", 3) == 0)
 983             {
 984                 ret = SEC_E_LOGON_DENIED;
 985                 goto asc_end;
 986             }
 987             else
 988             {
 989                 ret = SEC_E_INTERNAL_ERROR;
 990                 goto asc_end;
 991             }
 992         }
 993         pOutput->pBuffers[0].cbBuffer = 0;
 994         ret = SEC_E_OK;
 995
 996         TRACE("Getting negotiated flags\n");
 997         lstrcpynA(buffer, "GF", max_len - 1);
 998         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 999             goto asc_end;
1000
1001         if(buffer_len < 3)
1002         {
1003             TRACE("No flags negotiated, or helper does not support GF command\n");
1004         }
1005         else
1006         {
1007             TRACE("Negotiated %s\n", debugstr_a(buffer));
1008             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
1009             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
1010         }
1011
1012         TRACE("Getting session key\n");
1013         lstrcpynA(buffer, "GK", max_len - 1);
1014         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1015             goto asc_end;
1016
1017         if(buffer_len < 3)
1018             TRACE("Helper does not support GK command\n");
1019         else
1020         {
1021             if(strncmp(buffer, "BH ", 3) == 0)
1022             {
1023                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1024                 helper->valid_session_key = FALSE;
1025                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1026                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1027                 memset(helper->session_key, 0 , 16);
1028             }
1029             else if(strncmp(buffer, "GK ", 3) == 0)
1030             {
1031                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1032                                 &bin_len)) != SEC_E_OK)
1033                 {
1034                     TRACE("Failed to decode session key\n");
1035                 }
1036                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1037                 helper->valid_session_key = TRUE;
1038                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1039                 if(!helper->session_key)
1040                 {
1041                     TRACE("Failed to allocate memory for session key\n");
1042                     ret = SEC_E_INTERNAL_ERROR;
1043                     goto asc_end;
1044                 }
1045                 memcpy(helper->session_key, bin, 16);
1046             }
1047         }
1048         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1049         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1050         helper->crypt.ntlm.seq_num = 0l;
1051     }
1052
1053     phNewContext->dwUpper = ctxt_attr;
1054     phNewContext->dwLower = (ULONG_PTR)helper;
1055
1056 asc_end:
1057     HeapFree(GetProcessHeap(), 0, want_flags);
1058     HeapFree(GetProcessHeap(), 0, buffer);
1059     HeapFree(GetProcessHeap(), 0, bin);
1060     return ret;
1061 }
1062
1063 /***********************************************************************
1064  *              CompleteAuthToken
1065  */
1066 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1067  PSecBufferDesc pToken)
1068 {
1069     /* We never need to call CompleteAuthToken anyway */
1070     TRACE("%p %p\n", phContext, pToken);
1071     if (!phContext)
1072         return SEC_E_INVALID_HANDLE;
1073
1074     return SEC_E_OK;
1075 }
1076
1077 /***********************************************************************
1078  *              DeleteSecurityContext
1079  */
1080 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1081 {
1082     PNegoHelper helper;
1083
1084     TRACE("%p\n", phContext);
1085     if (!phContext)
1086         return SEC_E_INVALID_HANDLE;
1087
1088     helper = (PNegoHelper)phContext->dwLower;
1089
1090     phContext->dwUpper = 0;
1091     phContext->dwLower = 0;
1092
1093     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1094     HeapFree(GetProcessHeap(), 0, helper->session_key);
1095     helper->valid_session_key = FALSE;
1096
1097     return SEC_E_OK;
1098 }
1099
1100 /***********************************************************************
1101  *              QueryContextAttributesW
1102  */
1103 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1104  ULONG ulAttribute, void *pBuffer)
1105 {
1106     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1107     if (!phContext)
1108         return SEC_E_INVALID_HANDLE;
1109
1110     switch(ulAttribute)
1111     {
1112 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1113         _x(SECPKG_ATTR_ACCESS_TOKEN);
1114         _x(SECPKG_ATTR_AUTHORITY);
1115         _x(SECPKG_ATTR_DCE_INFO);
1116         case SECPKG_ATTR_FLAGS:
1117         {
1118             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1119             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1120
1121             spcf->Flags = 0;
1122             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1123                 spcf->Flags |= ISC_RET_INTEGRITY;
1124             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1125                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1126             return SEC_E_OK;
1127         }
1128         _x(SECPKG_ATTR_KEY_INFO);
1129         _x(SECPKG_ATTR_LIFESPAN);
1130         _x(SECPKG_ATTR_NAMES);
1131         _x(SECPKG_ATTR_NATIVE_NAMES);
1132         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1133         _x(SECPKG_ATTR_PACKAGE_INFO);
1134         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1135         _x(SECPKG_ATTR_SESSION_KEY);
1136         case SECPKG_ATTR_SIZES:
1137         {
1138             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1139             spcs->cbMaxToken = NTLM_MAX_BUF;
1140             spcs->cbMaxSignature = 16;
1141             spcs->cbBlockSize = 0;
1142             spcs->cbSecurityTrailer = 16;
1143             return SEC_E_OK;
1144         }
1145         _x(SECPKG_ATTR_STREAM_SIZES);
1146         _x(SECPKG_ATTR_TARGET_INFORMATION);
1147 #undef _x
1148         default:
1149             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1150     }
1151
1152     return SEC_E_UNSUPPORTED_FUNCTION;
1153 }
1154
1155 /***********************************************************************
1156  *              QueryContextAttributesA
1157  */
1158 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1159  ULONG ulAttribute, void *pBuffer)
1160 {
1161     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1162 }
1163
1164 /***********************************************************************
1165  *              ImpersonateSecurityContext
1166  */
1167 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1168 {
1169     SECURITY_STATUS ret;
1170
1171     TRACE("%p\n", phContext);
1172     if (phContext)
1173     {
1174         ret = SEC_E_UNSUPPORTED_FUNCTION;
1175     }
1176     else
1177     {
1178         ret = SEC_E_INVALID_HANDLE;
1179     }
1180     return ret;
1181 }
1182
1183 /***********************************************************************
1184  *              RevertSecurityContext
1185  */
1186 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1187 {
1188     SECURITY_STATUS ret;
1189
1190     TRACE("%p\n", phContext);
1191     if (phContext)
1192     {
1193         ret = SEC_E_UNSUPPORTED_FUNCTION;
1194     }
1195     else
1196     {
1197         ret = SEC_E_INVALID_HANDLE;
1198     }
1199     return ret;
1200 }
1201
1202 /*************************************************************************
1203  *             ntlm_GetTokenBufferIndex
1204  * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
1205  * Returns index if found or -1 if not found.
1206  */
1207 static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
1208 {
1209     UINT i;
1210
1211     TRACE("%p\n", pMessage);
1212
1213     for( i = 0; i < pMessage->cBuffers; ++i )
1214     {
1215         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1216             return i;
1217     }
1218
1219     return -1;
1220 }
1221
1222 /***********************************************************************
1223  *             ntlm_CreateSignature
1224  * As both MakeSignature and VerifySignature need this, but different keys
1225  * are needed for NTLMv2, the logic goes into a helper function.
1226  */
1227 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1228         int token_idx, SignDirection direction)
1229 {
1230     ULONG sign_version = 1;
1231     UINT i;
1232     TRACE("%p, %p, %d\n", helper, pMessage, direction);
1233
1234     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1235             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1236     {
1237         return SEC_E_UNSUPPORTED_FUNCTION;
1238     }
1239     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1240     {
1241         PBYTE sig = pMessage->pBuffers[token_idx].pvBuffer;
1242         ULONG crc = 0U;
1243
1244         for(i=0; i < pMessage->cBuffers; ++i)
1245         {
1246             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1247             {
1248                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1249                     pMessage->pBuffers[i].cbBuffer, crc);
1250             }
1251         }
1252
1253         sig[ 0] = (sign_version >>  0) & 0xff;
1254         sig[ 1] = (sign_version >>  8) & 0xff;
1255         sig[ 2] = (sign_version >> 16) & 0xff;
1256         sig[ 3] = (sign_version >> 24) & 0xff;
1257         memset(sig+4, 0, 4);
1258         sig[ 8] = (crc >>  0) & 0xff;
1259         sig[ 9] = (crc >>  8) & 0xff;
1260         sig[10] = (crc >> 16) & 0xff;
1261         sig[11] = (crc >> 24) & 0xff;
1262         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1263         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1264         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1265         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1266
1267         ++(helper->crypt.ntlm.seq_num);
1268
1269         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1270         return SEC_E_OK;
1271     }
1272
1273     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1274     {
1275         TRACE("Creating a dummy signature.\n");
1276         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1277         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1278         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1279         pMessage->pBuffers[token_idx].cbBuffer = 16;
1280         return SEC_E_OK;
1281     }
1282
1283     return SEC_E_UNSUPPORTED_FUNCTION;
1284 }
1285
1286 /***********************************************************************
1287  *              MakeSignature
1288  */
1289 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1290  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1291 {
1292     PNegoHelper helper;
1293     int token_idx;
1294
1295     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1296     if (!phContext)
1297         return SEC_E_INVALID_HANDLE;
1298
1299     if(fQOP)
1300         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1301
1302     if(MessageSeqNo)
1303         FIXME("Ignoring MessageSeqNo\n");
1304
1305     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1306         return SEC_E_INVALID_TOKEN;
1307
1308     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1309     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1310         return SEC_E_INVALID_TOKEN;
1311
1312     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1313         return SEC_E_BUFFER_TOO_SMALL;
1314
1315     helper = (PNegoHelper)phContext->dwLower;
1316     TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1317
1318     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND);
1319 }
1320
1321 /***********************************************************************
1322  *              VerifySignature
1323  */
1324 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1325  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1326 {
1327     PNegoHelper helper;
1328     ULONG fQOP = 0;
1329     UINT i;
1330     int token_idx;
1331     SECURITY_STATUS ret;
1332     SecBufferDesc local_desc;
1333     PSecBuffer     local_buff;
1334     BYTE          local_sig[16];
1335
1336     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1337     if(!phContext)
1338         return SEC_E_INVALID_HANDLE;
1339
1340     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1341         return SEC_E_INVALID_TOKEN;
1342
1343     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1344         return SEC_E_INVALID_TOKEN;
1345
1346     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1347         return SEC_E_BUFFER_TOO_SMALL;
1348
1349     if(MessageSeqNo)
1350         FIXME("Ignoring MessageSeqNo\n");
1351
1352     helper = (PNegoHelper)phContext->dwLower;
1353     TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1354
1355     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1356
1357     local_desc.ulVersion = SECBUFFER_VERSION;
1358     local_desc.cBuffers = pMessage->cBuffers;
1359     local_desc.pBuffers = local_buff;
1360
1361     for(i=0; i < pMessage->cBuffers; ++i)
1362     {
1363         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1364         {
1365             local_buff[i].BufferType = SECBUFFER_TOKEN;
1366             local_buff[i].cbBuffer = 16;
1367             local_buff[i].pvBuffer = local_sig;
1368         }
1369         else
1370         {
1371             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1372             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1373             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1374         }
1375     }
1376
1377     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV)) != SEC_E_OK)
1378         return ret;
1379
1380     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1381                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1382         ret = SEC_E_MESSAGE_ALTERED;
1383     else
1384         ret = SEC_E_OK;
1385
1386     HeapFree(GetProcessHeap(), 0, local_buff);
1387     pfQOP = &fQOP;
1388
1389     return ret;
1390
1391 }
1392
1393 /***********************************************************************
1394  *             FreeCredentialsHandle
1395  */
1396 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1397         PCredHandle phCredential)
1398 {
1399     SECURITY_STATUS ret;
1400
1401     if(phCredential){
1402         PNegoHelper helper = (PNegoHelper) phCredential->dwLower;
1403         phCredential->dwUpper = 0;
1404         phCredential->dwLower = 0;
1405         cleanup_helper(helper);
1406         ret = SEC_E_OK;
1407     }
1408     else
1409         ret = SEC_E_OK;
1410
1411     return ret;
1412 }
1413
1414 /***********************************************************************
1415  *             EncryptMessage
1416  */
1417 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1418         ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1419 {
1420     PNegoHelper helper;
1421     UINT i;
1422     int token_idx = -1;
1423
1424     TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1425
1426     if(!phContext)
1427         return SEC_E_INVALID_HANDLE;
1428
1429     if(fQOP)
1430         FIXME("Ignoring fQOP\n");
1431
1432     if(MessageSeqNo)
1433         FIXME("Ignoring MessageSeqNo\n");
1434
1435     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1436         return SEC_E_INVALID_TOKEN;
1437
1438     for(i=0; i < pMessage->cBuffers; ++i)
1439     {
1440         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1441         {
1442             token_idx = i;
1443             break;
1444         }
1445     }
1446
1447     if(token_idx == -1)
1448         return SEC_E_INVALID_TOKEN;
1449
1450     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1451         return SEC_E_BUFFER_TOO_SMALL;
1452
1453     helper = (PNegoHelper) phContext->dwLower;
1454
1455     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
1456     {
1457         FIXME("Can't handle NTLMv2 encryption yet, aborting\n");
1458         return SEC_E_UNSUPPORTED_FUNCTION;
1459     }
1460     else
1461     {
1462         PBYTE sig = pMessage->pBuffers[token_idx].pvBuffer;
1463         ULONG crc = 0U;
1464         ULONG sign_version = 1l;
1465
1466         for(i=0; i < pMessage->cBuffers; ++i)
1467         {
1468             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1469             {
1470                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1471                     pMessage->pBuffers[i].cbBuffer, crc);
1472             }
1473         }
1474
1475         sig[ 0] = (sign_version >>  0) & 0xff;
1476         sig[ 1] = (sign_version >>  8) & 0xff;
1477         sig[ 2] = (sign_version >> 16) & 0xff;
1478         sig[ 3] = (sign_version >> 24) & 0xff;
1479         memset(sig+4, 0, 4);
1480         sig[ 8] = (crc >>  0) & 0xff;
1481         sig[ 9] = (crc >>  8) & 0xff;
1482         sig[10] = (crc >> 16) & 0xff;
1483         sig[11] = (crc >> 24) & 0xff;
1484         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1485         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1486         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1487         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1488
1489         SECUR32_arc4Process(helper->crypt.ntlm.a4i, pMessage->pBuffers[1].pvBuffer,
1490                 pMessage->pBuffers[1].cbBuffer);
1491         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1492
1493         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1494             memset(sig+4, 0, 4);
1495
1496         ++(helper->crypt.ntlm.seq_num);
1497
1498     }
1499
1500     return SEC_E_OK;
1501 }
1502
1503 /***********************************************************************
1504  *             DecryptMessage
1505  */
1506 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1507         PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1508 {
1509     SECURITY_STATUS ret;
1510     ULONG ntlmssp_flags_save;
1511     PNegoHelper helper;
1512     UINT i;
1513     int token_idx = -1;
1514     TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1515
1516     if(!phContext)
1517         return SEC_E_INVALID_HANDLE;
1518
1519     if(MessageSeqNo)
1520         FIXME("Ignoring MessageSeqNo\n");
1521
1522     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1523         return SEC_E_INVALID_TOKEN;
1524
1525     for(i=0; i < pMessage->cBuffers; ++i)
1526     {
1527         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1528         {
1529             token_idx = i;
1530             break;
1531         }
1532     }
1533     if(token_idx == -1)
1534         return SEC_E_INVALID_TOKEN;
1535
1536     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1537         return SEC_E_BUFFER_TOO_SMALL;
1538
1539     helper = (PNegoHelper) phContext->dwLower;
1540
1541     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
1542     {
1543         FIXME("Can't handle NTLMv2 encryption yet, aborting\n");
1544         return SEC_E_UNSUPPORTED_FUNCTION;
1545     }
1546     else
1547     {
1548         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1549                 pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer);
1550     }
1551
1552     /* Make sure we use a session key for the signature check, EncryptMessage
1553      * always does that, even in the dummy case */
1554     ntlmssp_flags_save = helper->neg_flags;
1555
1556     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1557     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1558
1559     helper->neg_flags = ntlmssp_flags_save;
1560
1561     return ret;
1562 }
1563
1564 static SecurityFunctionTableA ntlmTableA = {
1565     1,
1566     NULL,   /* EnumerateSecurityPackagesA */
1567     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1568     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1569     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1570     NULL,   /* Reserved2 */
1571     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1572     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1573     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1574     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1575     NULL,  /* ApplyControlToken */
1576     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1577     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1578     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1579     ntlm_MakeSignature,                 /* MakeSignature */
1580     ntlm_VerifySignature,               /* VerifySignature */
1581     FreeContextBuffer,                  /* FreeContextBuffer */
1582     NULL,   /* QuerySecurityPackageInfoA */
1583     NULL,   /* Reserved3 */
1584     NULL,   /* Reserved4 */
1585     NULL,   /* ExportSecurityContext */
1586     NULL,   /* ImportSecurityContextA */
1587     NULL,   /* AddCredentialsA */
1588     NULL,   /* Reserved8 */
1589     NULL,   /* QuerySecurityContextToken */
1590     ntlm_EncryptMessage,                /* EncryptMessage */
1591     ntlm_DecryptMessage,                /* DecryptMessage */
1592     NULL,   /* SetContextAttributesA */
1593 };
1594
1595 static SecurityFunctionTableW ntlmTableW = {
1596     1,
1597     NULL,   /* EnumerateSecurityPackagesW */
1598     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1599     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1600     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1601     NULL,   /* Reserved2 */
1602     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1603     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1604     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1605     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1606     NULL,  /* ApplyControlToken */
1607     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1608     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1609     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1610     ntlm_MakeSignature,                 /* MakeSignature */
1611     ntlm_VerifySignature,               /* VerifySignature */
1612     FreeContextBuffer,                  /* FreeContextBuffer */
1613     NULL,   /* QuerySecurityPackageInfoW */
1614     NULL,   /* Reserved3 */
1615     NULL,   /* Reserved4 */
1616     NULL,   /* ExportSecurityContext */
1617     NULL,   /* ImportSecurityContextW */
1618     NULL,   /* AddCredentialsW */
1619     NULL,   /* Reserved8 */
1620     NULL,   /* QuerySecurityContextToken */
1621     ntlm_EncryptMessage,                /* EncryptMessage */
1622     ntlm_DecryptMessage,                /* DecryptMessage */
1623     NULL,   /* SetContextAttributesW */
1624 };
1625
1626 #define NTLM_COMMENT \
1627    { 'N', 'T', 'L', 'M', ' ', \
1628      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1629      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1630
1631 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1632 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1633
1634 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1635
1636 static char ntlm_name_A[] = NTLM_NAME;
1637 static WCHAR ntlm_name_W[] = NTLM_NAME;
1638
1639 /* According to Windows, NTLM has the following capabilities.  */
1640 #define CAPS ( \
1641         SECPKG_FLAG_INTEGRITY | \
1642         SECPKG_FLAG_PRIVACY | \
1643         SECPKG_FLAG_TOKEN_ONLY | \
1644         SECPKG_FLAG_CONNECTION | \
1645         SECPKG_FLAG_MULTI_REQUIRED | \
1646         SECPKG_FLAG_IMPERSONATION | \
1647         SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1648         SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1649
1650 static const SecPkgInfoW infoW = {
1651     CAPS,
1652     1,
1653     RPC_C_AUTHN_WINNT,
1654     NTLM_MAX_BUF,
1655     ntlm_name_W,
1656     ntlm_comment_W
1657 };
1658
1659 static const SecPkgInfoA infoA = {
1660     CAPS,
1661     1,
1662     RPC_C_AUTHN_WINNT,
1663     NTLM_MAX_BUF,
1664     ntlm_name_A,
1665     ntlm_comment_A
1666 };
1667
1668 void SECUR32_initNTLMSP(void)
1669 {
1670     SECURITY_STATUS ret;
1671     PNegoHelper helper;
1672     static CHAR version[] = "--version";
1673
1674     SEC_CHAR *args[] = {
1675         ntlm_auth,
1676         version,
1677         NULL };
1678
1679     if((ret = fork_helper(&helper, ntlm_auth, args)) != SEC_E_OK)
1680     {
1681         /* Cheat and allocate a helper anyway, so cleanup later will work. */
1682         helper = HeapAlloc(GetProcessHeap(),0, sizeof(PNegoHelper));
1683         helper->version = -1;
1684     }
1685     else
1686         check_version(helper);
1687
1688     if(helper->version > 2)
1689     {
1690         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
1691         SECUR32_addPackages(provider, 1L, &infoA, &infoW);
1692     }
1693     else
1694     {
1695         ERR("%s was not found or is outdated. "
1696             "Make sure that ntlm_auth >= 3.x is in your path.\n",
1697             ntlm_auth);
1698     }
1699     cleanup_helper(helper);
1700 }