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