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             helper->neg_flags = 0l;
 631         }
 632         else
 633         {
 634             TRACE("Negotiated %s\n", debugstr_a(buffer));
 635             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
 636             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
 637         }
 638
 639         TRACE("Getting session key\n");
 640         lstrcpynA(buffer, "GK", max_len - 1);
 641         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 642             goto isc_end;
 643
 644         if(strncmp(buffer, "BH", 2) == 0)
 645         {
 646             TRACE("Helper does not understand command or no key negotiated.\n");
 647             helper->valid_session_key = FALSE;
 648             helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 649             /*Generate the dummy session key = MD4(MD4(password))*/
 650             if(helper->password)
 651             {
 652                 SEC_WCHAR *unicode_password;
 653                 int passwd_lenW;
 654
 655                 TRACE("Converting password to unicode.\n");
 656                 passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 657                         (LPCSTR)helper->password, helper->pwlen,
 658                         NULL, 0);
 659                 unicode_password = HeapAlloc(GetProcessHeap(), 0,
 660                         passwd_lenW * sizeof(SEC_WCHAR));
 661                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)helper->password,
 662                         helper->pwlen, unicode_password, passwd_lenW);
 663
 664                 SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
 665                         lstrlenW(unicode_password) * sizeof(SEC_WCHAR), helper->session_key);
 666
 667                 HeapFree(GetProcessHeap(), 0, unicode_password);
 668             }
 669             else
 670                 memset(helper->session_key, 0, 16);
 671         }
 672         else if(strncmp(buffer, "GK ", 3) == 0)
 673         {
 674             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 675                             &bin_len)) != SEC_E_OK)
 676             {
 677                 TRACE("Failed to decode session key\n");
 678             }
 679             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 680             helper->valid_session_key = TRUE;
 681             if(!helper->session_key)
 682                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 683             if(!helper->session_key)
 684             {
 685                 TRACE("Failed to allocate memory for session key\n");
 686                 ret = SEC_E_INTERNAL_ERROR;
 687                 goto isc_end;
 688             }
 689             memcpy(helper->session_key, bin, bin_len);
 690         }
 691
 692         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 693         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 694         helper->crypt.ntlm.seq_num = 0l;
 695     }
 696
 697     if(ret != SEC_I_CONTINUE_NEEDED)
 698     {
 699         TRACE("Deleting password!\n");
 700         if(helper->password)
 701             memset(helper->password, 0, helper->pwlen-2);
 702         HeapFree(GetProcessHeap(), 0, helper->password);
 703     }
 704 isc_end:
 705     HeapFree(GetProcessHeap(), 0, want_flags);
 706     HeapFree(GetProcessHeap(), 0, buffer);
 707     HeapFree(GetProcessHeap(), 0, bin);
 708     return ret;
 709 }
 710
 711 /***********************************************************************
 712  *              InitializeSecurityContextA
 713  */
 714 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 715  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 716  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 717  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 718  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 719 {
 720     SECURITY_STATUS ret;
 721
 722     TRACE("%p %p %s %ld %ld %ld %p %ld %p %p %p %p\n", phCredential, phContext,
 723      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 724      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 725
 726     if (phCredential)
 727     {
 728         SEC_WCHAR *target = NULL;
 729         if(pszTargetName != NULL)
 730         {
 731             int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 732                 strlen(pszTargetName)+1, NULL, 0);
 733             target = HeapAlloc(GetProcessHeap(), 0, target_size *
 734                     sizeof(SEC_WCHAR));
 735             MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 736                 target, target_size);
 737         }
 738
 739         ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 740                 fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 741                 phNewContext, pOutput, pfContextAttr, ptsExpiry);
 742
 743         HeapFree(GetProcessHeap(), 0, target);
 744     }
 745     else
 746     {
 747         ret = SEC_E_INVALID_HANDLE;
 748     }
 749     return ret;
 750 }
 751
 752 /***********************************************************************
 753  *              AcceptSecurityContext
 754  */
 755 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 756  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 757  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 758  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 759 {
 760     SECURITY_STATUS ret;
 761     char *buffer, *want_flags = NULL;
 762     PBYTE bin;
 763     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 764     ULONG ctxt_attr = 0;
 765     PNegoHelper helper;
 766
 767     TRACE("%p %p %p %ld %ld %p %p %p %p\n", phCredential, phContext, pInput,
 768      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 769      ptsExpiry);
 770
 771     if (!phCredential)
 772         return SEC_E_INVALID_HANDLE;
 773
 774     helper = (PNegoHelper)phCredential->dwLower;
 775
 776     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 777     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 778
 779     if(helper->mode != NTLM_SERVER)
 780     {
 781         ret = SEC_E_INVALID_HANDLE;
 782         goto asc_end;
 783     }
 784
 785     if(TargetDataRep == SECURITY_NETWORK_DREP){
 786         TRACE("Using SECURITY_NETWORK_DREP\n");
 787     }
 788
 789     if(phContext == NULL)
 790     {
 791         /* This is the first call to AcceptSecurityHandle */
 792         if(pInput == NULL)
 793         {
 794             ret = SEC_E_INCOMPLETE_MESSAGE;
 795             goto asc_end;
 796         }
 797
 798         if(pInput->cBuffers < 1)
 799         {
 800             ret = SEC_E_INCOMPLETE_MESSAGE;
 801             goto asc_end;
 802         }
 803
 804         if(pInput->pBuffers[0].cbBuffer > max_len)
 805         {
 806             ret = SEC_E_INVALID_TOKEN;
 807             goto asc_end;
 808         }
 809         else
 810             bin_len = pInput->pBuffers[0].cbBuffer;
 811
 812         /* Handle all the flags */
 813         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 814         if(want_flags == NULL)
 815         {
 816             TRACE("Failed to allocate memory for the want_flags!\n");
 817             ret = SEC_E_INSUFFICIENT_MEMORY;
 818             goto asc_end;
 819         }
 820         lstrcpyA(want_flags, "SF");
 821         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
 822         {
 823             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
 824         }
 825         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
 826         {
 827             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 828         }
 829         if(fContextReq & ASC_REQ_CONNECTION)
 830         {
 831             /* This is default, so we'll enable it */
 832             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
 833             ctxt_attr |= ASC_RET_CONNECTION;
 834         }
 835         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
 836         {
 837             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
 838         }
 839         if(fContextReq & ASC_REQ_INTEGRITY)
 840         {
 841             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 842         }
 843         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
 844         {
 845             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
 846         }
 847         if(fContextReq & ASC_REQ_REPLAY_DETECT)
 848         {
 849             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
 850         }
 851         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 852         {
 853             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
 854         }
 855         if(fContextReq & ISC_REQ_STREAM)
 856         {
 857             FIXME("ASC_REQ_STREAM stub\n");
 858         }
 859         /* Done with the flags */
 860
 861         if(lstrlenA(want_flags) > 3)
 862         {
 863             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
 864             lstrcpynA(buffer, want_flags, max_len - 1);
 865             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
 866                     SEC_E_OK)
 867                 goto asc_end;
 868             if(!strncmp(buffer, "BH", 2))
 869                 TRACE("Helper doesn't understand new command set\n");
 870         }
 871
 872         /* This is the YR request from the client, encode to base64 */
 873
 874         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
 875
 876         lstrcpynA(buffer, "YR ", max_len-1);
 877
 878         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
 879                     &buffer_len)) != SEC_E_OK)
 880         {
 881             goto asc_end;
 882         }
 883
 884         TRACE("Client sent: %s\n", debugstr_a(buffer));
 885
 886         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
 887                     SEC_E_OK)
 888         {
 889             goto asc_end;
 890         }
 891
 892         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
 893         /* The expected answer is TT <base64 blob> */
 894
 895         if(strncmp(buffer, "TT ", 3) != 0)
 896         {
 897             ret = SEC_E_INTERNAL_ERROR;
 898             goto asc_end;
 899         }
 900
 901         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 902                         &bin_len)) != SEC_E_OK)
 903         {
 904             goto asc_end;
 905         }
 906
 907         /* send this to the client */
 908         if(pOutput == NULL)
 909         {
 910             ret = SEC_E_INSUFFICIENT_MEMORY;
 911             goto asc_end;
 912         }
 913
 914         if(pOutput->cBuffers < 1)
 915         {
 916             ret = SEC_E_INSUFFICIENT_MEMORY;
 917             goto asc_end;
 918         }
 919
 920         pOutput->pBuffers[0].cbBuffer = bin_len;
 921         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
 922         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
 923         ret = SEC_I_CONTINUE_NEEDED;
 924
 925     }
 926     else
 927     {
 928         /* we expect a KK request from client */
 929         if(pInput == NULL)
 930         {
 931             ret = SEC_E_INCOMPLETE_MESSAGE;
 932             goto asc_end;
 933         }
 934
 935         if(pInput->cBuffers < 1)
 936         {
 937             ret = SEC_E_INCOMPLETE_MESSAGE;
 938             goto asc_end;
 939         }
 940
 941         if(pInput->pBuffers[0].cbBuffer > max_len)
 942         {
 943             ret = SEC_E_INVALID_TOKEN;
 944             goto asc_end;
 945         }
 946         else
 947             bin_len = pInput->pBuffers[0].cbBuffer;
 948
 949         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
 950
 951         lstrcpynA(buffer, "KK ", max_len-1);
 952
 953         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
 954                     &buffer_len)) != SEC_E_OK)
 955         {
 956             goto asc_end;
 957         }
 958
 959         TRACE("Client sent: %s\n", debugstr_a(buffer));
 960
 961         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
 962                     SEC_E_OK)
 963         {
 964             goto asc_end;
 965         }
 966
 967         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
 968
 969         if(strncmp(buffer, "AF ", 3) != 0)
 970         {
 971             if(strncmp(buffer, "NA ", 3) == 0)
 972             {
 973                 ret = SEC_E_LOGON_DENIED;
 974                 goto asc_end;
 975             }
 976             else
 977             {
 978                 ret = SEC_E_INTERNAL_ERROR;
 979                 goto asc_end;
 980             }
 981         }
 982         pOutput->pBuffers[0].cbBuffer = 0;
 983         ret = SEC_E_OK;
 984
 985         TRACE("Getting negotiated flags\n");
 986         lstrcpynA(buffer, "GF", max_len - 1);
 987         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 988             goto asc_end;
 989
 990         if(buffer_len < 3)
 991         {
 992             TRACE("No flags negotiated, or helper does not support GF command\n");
 993         }
 994         else
 995         {
 996             TRACE("Negotiated %s\n", debugstr_a(buffer));
 997             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
 998             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
 999         }
1000
1001         TRACE("Getting session key\n");
1002         lstrcpynA(buffer, "GK", max_len - 1);
1003         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1004             goto asc_end;
1005
1006         if(buffer_len < 3)
1007             TRACE("Helper does not support GK command\n");
1008         else
1009         {
1010             if(strncmp(buffer, "BH ", 3) == 0)
1011             {
1012                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1013                 helper->valid_session_key = FALSE;
1014                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1015                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1016                 memset(helper->session_key, 0 , 16);
1017             }
1018             else if(strncmp(buffer, "GK ", 3) == 0)
1019             {
1020                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1021                                 &bin_len)) != SEC_E_OK)
1022                 {
1023                     TRACE("Failed to decode session key\n");
1024                 }
1025                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1026                 helper->valid_session_key = TRUE;
1027                 if(!helper->session_key)
1028                     helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1029                 if(!helper->session_key)
1030                 {
1031                     TRACE("Failed to allocate memory for session key\n");
1032                     ret = SEC_E_INTERNAL_ERROR;
1033                     goto asc_end;
1034                 }
1035                 memcpy(helper->session_key, bin, 16);
1036             }
1037         }
1038         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1039         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1040         helper->crypt.ntlm.seq_num = 0l;
1041     }
1042
1043     phNewContext->dwUpper = ctxt_attr;
1044     phNewContext->dwLower = (ULONG_PTR)helper;
1045
1046 asc_end:
1047     HeapFree(GetProcessHeap(), 0, want_flags);
1048     HeapFree(GetProcessHeap(), 0, buffer);
1049     HeapFree(GetProcessHeap(), 0, bin);
1050     return ret;
1051 }
1052
1053 /***********************************************************************
1054  *              CompleteAuthToken
1055  */
1056 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1057  PSecBufferDesc pToken)
1058 {
1059     /* We never need to call CompleteAuthToken anyway */
1060     TRACE("%p %p\n", phContext, pToken);
1061     if (!phContext)
1062         return SEC_E_INVALID_HANDLE;
1063
1064     return SEC_E_OK;
1065 }
1066
1067 /***********************************************************************
1068  *              DeleteSecurityContext
1069  */
1070 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1071 {
1072     SECURITY_STATUS ret;
1073
1074     TRACE("%p\n", phContext);
1075     if (phContext)
1076     {
1077         phContext->dwUpper = 0;
1078         phContext->dwLower = 0;
1079         ret = SEC_E_OK;
1080     }
1081     else
1082     {
1083         ret = SEC_E_INVALID_HANDLE;
1084     }
1085     return ret;
1086 }
1087
1088 /***********************************************************************
1089  *              QueryContextAttributesW
1090  */
1091 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1092  unsigned long ulAttribute, void *pBuffer)
1093 {
1094     TRACE("%p %ld %p\n", phContext, ulAttribute, pBuffer);
1095     if (!phContext)
1096         return SEC_E_INVALID_HANDLE;
1097
1098     switch(ulAttribute)
1099     {
1100 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1101         _x(SECPKG_ATTR_ACCESS_TOKEN);
1102         _x(SECPKG_ATTR_AUTHORITY);
1103         _x(SECPKG_ATTR_DCE_INFO);
1104         case SECPKG_ATTR_FLAGS:
1105         {
1106             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1107             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1108
1109             spcf->Flags = 0;
1110             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1111                 spcf->Flags |= ISC_RET_INTEGRITY;
1112             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1113                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1114             return SEC_E_OK;
1115         }
1116         _x(SECPKG_ATTR_KEY_INFO);
1117         _x(SECPKG_ATTR_LIFESPAN);
1118         _x(SECPKG_ATTR_NAMES);
1119         _x(SECPKG_ATTR_NATIVE_NAMES);
1120         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1121         _x(SECPKG_ATTR_PACKAGE_INFO);
1122         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1123         _x(SECPKG_ATTR_SESSION_KEY);
1124         case SECPKG_ATTR_SIZES:
1125         {
1126             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1127             spcs->cbMaxToken = NTLM_MAX_BUF;
1128             spcs->cbMaxSignature = 16;
1129             spcs->cbBlockSize = 0;
1130             spcs->cbSecurityTrailer = 16;
1131             return SEC_E_OK;
1132         }
1133         _x(SECPKG_ATTR_STREAM_SIZES);
1134         _x(SECPKG_ATTR_TARGET_INFORMATION);
1135 #undef _x
1136         default:
1137             TRACE("Unknown value %ld passed for ulAttribute\n", ulAttribute);
1138     }
1139
1140     return SEC_E_UNSUPPORTED_FUNCTION;
1141 }
1142
1143 /***********************************************************************
1144  *              QueryContextAttributesA
1145  */
1146 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1147  unsigned long ulAttribute, void *pBuffer)
1148 {
1149     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1150 }
1151
1152 /***********************************************************************
1153  *              ImpersonateSecurityContext
1154  */
1155 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1156 {
1157     SECURITY_STATUS ret;
1158
1159     TRACE("%p\n", phContext);
1160     if (phContext)
1161     {
1162         ret = SEC_E_UNSUPPORTED_FUNCTION;
1163     }
1164     else
1165     {
1166         ret = SEC_E_INVALID_HANDLE;
1167     }
1168     return ret;
1169 }
1170
1171 /***********************************************************************
1172  *              RevertSecurityContext
1173  */
1174 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1175 {
1176     SECURITY_STATUS ret;
1177
1178     TRACE("%p\n", phContext);
1179     if (phContext)
1180     {
1181         ret = SEC_E_UNSUPPORTED_FUNCTION;
1182     }
1183     else
1184     {
1185         ret = SEC_E_INVALID_HANDLE;
1186     }
1187     return ret;
1188 }
1189
1190 /***********************************************************************
1191  *              MakeSignature
1192  */
1193 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1194  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1195 {
1196     PNegoHelper helper;
1197     ULONG sign_version = 1;
1198
1199     TRACE("%p %ld %p %ld\n", phContext, fQOP, pMessage, MessageSeqNo);
1200     if (!phContext)
1201         return SEC_E_INVALID_HANDLE;
1202
1203     if(fQOP)
1204         FIXME("Ignoring fQOP 0x%08lx", fQOP);
1205
1206     if(MessageSeqNo)
1207         FIXME("Ignoring MessageSeqNo");
1208
1209     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2 ||
1210             pMessage->pBuffers[0].BufferType != SECBUFFER_TOKEN ||
1211             !pMessage->pBuffers[0].pvBuffer)
1212         return SEC_E_INVALID_TOKEN;
1213
1214     if(pMessage->pBuffers[0].cbBuffer < 16)
1215         return SEC_E_BUFFER_TOO_SMALL;
1216
1217     helper = (PNegoHelper)phContext->dwLower;
1218     TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1219     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
1220     {
1221         FIXME("Can't handle NTLMv2 signing yet. Aborting.\n");
1222         return SEC_E_UNSUPPORTED_FUNCTION;
1223     }
1224     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1225     {
1226         PBYTE sig = pMessage->pBuffers[0].pvBuffer;
1227         ULONG crc = ComputeCrc32(pMessage->pBuffers[1].pvBuffer,
1228                 pMessage->pBuffers[1].cbBuffer);
1229
1230         sig[ 0] = (sign_version >>  0) & 0xff;
1231         sig[ 1] = (sign_version >>  8) & 0xff;
1232         sig[ 2] = (sign_version >> 16) & 0xff;
1233         sig[ 3] = (sign_version >> 24) & 0xff;
1234         memset(sig+4, 0, 4);
1235         sig[ 8] = (crc >>  0) & 0xff;
1236         sig[ 9] = (crc >>  8) & 0xff;
1237         sig[10] = (crc >> 16) & 0xff;
1238         sig[11] = (crc >> 24) & 0xff;
1239         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1240         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1241         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1242         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1243
1244         ++(helper->crypt.ntlm.seq_num);
1245
1246         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1247         return SEC_E_OK;
1248     }
1249
1250     if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1251     {
1252         FIXME("Can't handle encrypted session key yet. Aborting.\n");
1253         return SEC_E_UNSUPPORTED_FUNCTION;
1254     }
1255
1256     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1257     {
1258         TRACE("Generating dummy signature\n");
1259         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1260         memset(pMessage->pBuffers[0].pvBuffer, 0, 16);
1261         memset(pMessage->pBuffers[0].pvBuffer, 0x01, 1);
1262         pMessage->pBuffers[0].cbBuffer = 16;
1263         return SEC_E_OK;
1264     }
1265
1266     return SEC_E_UNSUPPORTED_FUNCTION;
1267 }
1268
1269 /***********************************************************************
1270  *              VerifySignature
1271  */
1272 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1273  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1274 {
1275     PNegoHelper helper;
1276     ULONG fQOP = 0;
1277
1278     TRACE("%p %p %ld %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1279     if(!phContext)
1280         return SEC_E_INVALID_HANDLE;
1281
1282     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2 ||
1283             pMessage->pBuffers[0].BufferType != SECBUFFER_TOKEN ||
1284             !pMessage->pBuffers[0].pvBuffer)
1285         return SEC_E_INVALID_TOKEN;
1286
1287     if(pMessage->pBuffers[0].cbBuffer < 16)
1288         return SEC_E_BUFFER_TOO_SMALL;
1289
1290     if(MessageSeqNo)
1291         FIXME("Ignoring MessageSeqNo\n");
1292
1293     helper = (PNegoHelper)phContext->dwLower;
1294     TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1295
1296     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
1297     {
1298         FIXME("Can't handle NTLMv2 signing yet. Aborting.\n");
1299         return SEC_E_UNSUPPORTED_FUNCTION;
1300     }
1301
1302     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1303     {
1304         SecBufferDesc local_desc;
1305         SecBuffer     local_buff[2];
1306         BYTE          local_sig[16];
1307
1308         local_desc.ulVersion = SECBUFFER_VERSION;
1309         local_desc.cBuffers = 2;
1310         local_desc.pBuffers = local_buff;
1311         local_buff[0].BufferType = SECBUFFER_TOKEN;
1312         local_buff[0].cbBuffer = 16;
1313         local_buff[0].pvBuffer = local_sig;
1314         local_buff[1].BufferType = SECBUFFER_DATA;
1315         local_buff[1].cbBuffer = pMessage->pBuffers[1].cbBuffer;
1316         local_buff[1].pvBuffer = pMessage->pBuffers[1].pvBuffer;
1317
1318         ntlm_MakeSignature(phContext, fQOP, &local_desc, MessageSeqNo);
1319
1320         if(memcmp(((PBYTE)local_buff[0].pvBuffer) + 8, ((PBYTE)pMessage->pBuffers[0].pvBuffer) + 8, 8))
1321             return SEC_E_MESSAGE_ALTERED;
1322
1323         return SEC_E_OK;
1324     }
1325
1326     if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1327     {
1328         FIXME("Can't handle encrypted session keys yet. Aborting.\n");
1329         return SEC_E_UNSUPPORTED_FUNCTION;
1330     }
1331
1332     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1333     {
1334         const BYTE dummy_sig[] = {0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1335             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
1336         TRACE("Assuming dummy signature.\n");
1337         if(memcmp(pMessage->pBuffers[0].pvBuffer, dummy_sig, sizeof(dummy_sig)) != 0)
1338         {
1339             TRACE("Failed to verify the packet signature. Not a dummy signature?\n");
1340             return SEC_E_MESSAGE_ALTERED;
1341         }
1342         else
1343         {
1344             pfQOP = &fQOP;
1345             return SEC_E_OK;
1346         }
1347     }
1348
1349     return SEC_E_UNSUPPORTED_FUNCTION;
1350 }
1351
1352 /***********************************************************************
1353  *             FreeCredentialsHandle
1354  */
1355 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1356         PCredHandle phCredential)
1357 {
1358     SECURITY_STATUS ret;
1359
1360     if(phCredential){
1361         PNegoHelper helper = (PNegoHelper) phCredential->dwLower;
1362         phCredential->dwUpper = 0;
1363         phCredential->dwLower = 0;
1364         HeapFree(GetProcessHeap(), 0, helper->session_key);
1365         cleanup_helper(helper);
1366         ret = SEC_E_OK;
1367     }
1368     else
1369         ret = SEC_E_OK;
1370
1371     return ret;
1372 }
1373
1374 /***********************************************************************
1375  *             EncryptMessage
1376  */
1377 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1378         ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1379 {
1380     PNegoHelper helper;
1381     TRACE("(%p %ld %p %ld)\n", phContext, fQOP, pMessage, MessageSeqNo);
1382
1383     if(!phContext)
1384         return SEC_E_INVALID_HANDLE;
1385
1386     if(fQOP)
1387         FIXME("Ignoring fQOP\n");
1388
1389     if(MessageSeqNo)
1390         FIXME("Ignoring MessageSeqNo\n");
1391
1392     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2 ||
1393             pMessage->pBuffers[0].BufferType != SECBUFFER_TOKEN ||
1394             !pMessage->pBuffers[0].pvBuffer)
1395         return SEC_E_INVALID_TOKEN;
1396
1397     if(pMessage->pBuffers[0].cbBuffer < 16)
1398         return SEC_E_BUFFER_TOO_SMALL;
1399
1400     helper = (PNegoHelper) phContext->dwLower;
1401
1402     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
1403     {
1404         FIXME("Can't handle NTLMv2 encryption yet, aborting\n");
1405         return SEC_E_UNSUPPORTED_FUNCTION;
1406     }
1407     else
1408     {
1409         PBYTE sig = pMessage->pBuffers[0].pvBuffer;
1410         ULONG crc = ComputeCrc32(pMessage->pBuffers[1].pvBuffer,
1411                 pMessage->pBuffers[1].cbBuffer);
1412         ULONG sign_version = 1l;
1413
1414         sig[ 0] = (sign_version >>  0) & 0xff;
1415         sig[ 1] = (sign_version >>  8) & 0xff;
1416         sig[ 2] = (sign_version >> 16) & 0xff;
1417         sig[ 3] = (sign_version >> 24) & 0xff;
1418         memset(sig+4, 0, 4);
1419         sig[ 8] = (crc >>  0) & 0xff;
1420         sig[ 9] = (crc >>  8) & 0xff;
1421         sig[10] = (crc >> 16) & 0xff;
1422         sig[11] = (crc >> 24) & 0xff;
1423         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1424         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1425         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1426         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1427
1428         SECUR32_arc4Process(helper->crypt.ntlm.a4i, pMessage->pBuffers[1].pvBuffer,
1429                 pMessage->pBuffers[1].cbBuffer);
1430         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1431
1432         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1433             memset(sig+4, 0, 4);
1434
1435         ++(helper->crypt.ntlm.seq_num);
1436
1437     }
1438
1439     return SEC_E_OK;
1440 }
1441
1442 /***********************************************************************
1443  *             DecryptMessage
1444  */
1445 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1446         PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1447 {
1448     SECURITY_STATUS ret;
1449     ULONG ntlmssp_flags_save;
1450     PNegoHelper helper;
1451     TRACE("(%p %p %ld %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1452
1453     if(!phContext)
1454         return SEC_E_INVALID_HANDLE;
1455
1456     if(MessageSeqNo)
1457         FIXME("Ignoring MessageSeqNo\n");
1458
1459     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2 ||
1460             pMessage->pBuffers[0].BufferType != SECBUFFER_TOKEN ||
1461             !pMessage->pBuffers[0].pvBuffer)
1462         return SEC_E_INVALID_TOKEN;
1463
1464     if(pMessage->pBuffers[0].cbBuffer < 16)
1465         return SEC_E_BUFFER_TOO_SMALL;
1466
1467     helper = (PNegoHelper) phContext->dwLower;
1468
1469     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
1470     {
1471         FIXME("Can't handle NTLMv2 encryption yet, aborting\n");
1472         return SEC_E_UNSUPPORTED_FUNCTION;
1473     }
1474     else
1475     {
1476         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1477                 pMessage->pBuffers[1].pvBuffer, pMessage->pBuffers[1].cbBuffer);
1478     }
1479
1480     /* Make sure we use a session key for the signature check, EncryptMessage
1481      * always does that, even in the dummy case */
1482     ntlmssp_flags_save = helper->neg_flags;
1483
1484     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1485     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1486
1487     helper->neg_flags = ntlmssp_flags_save;
1488
1489     return ret;
1490 }
1491
1492 static SecurityFunctionTableA ntlmTableA = {
1493     1,
1494     NULL,   /* EnumerateSecurityPackagesA */
1495     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1496     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1497     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1498     NULL,   /* Reserved2 */
1499     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1500     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1501     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1502     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1503     NULL,  /* ApplyControlToken */
1504     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1505     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1506     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1507     ntlm_MakeSignature,                 /* MakeSignature */
1508     ntlm_VerifySignature,               /* VerifySignature */
1509     FreeContextBuffer,                  /* FreeContextBuffer */
1510     NULL,   /* QuerySecurityPackageInfoA */
1511     NULL,   /* Reserved3 */
1512     NULL,   /* Reserved4 */
1513     NULL,   /* ExportSecurityContext */
1514     NULL,   /* ImportSecurityContextA */
1515     NULL,   /* AddCredentialsA */
1516     NULL,   /* Reserved8 */
1517     NULL,   /* QuerySecurityContextToken */
1518     ntlm_EncryptMessage,                /* EncryptMessage */
1519     ntlm_DecryptMessage,                /* DecryptMessage */
1520     NULL,   /* SetContextAttributesA */
1521 };
1522
1523 static SecurityFunctionTableW ntlmTableW = {
1524     1,
1525     NULL,   /* EnumerateSecurityPackagesW */
1526     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1527     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1528     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1529     NULL,   /* Reserved2 */
1530     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1531     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1532     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1533     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1534     NULL,  /* ApplyControlToken */
1535     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1536     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1537     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1538     ntlm_MakeSignature,                 /* MakeSignature */
1539     ntlm_VerifySignature,               /* VerifySignature */
1540     FreeContextBuffer,                  /* FreeContextBuffer */
1541     NULL,   /* QuerySecurityPackageInfoW */
1542     NULL,   /* Reserved3 */
1543     NULL,   /* Reserved4 */
1544     NULL,   /* ExportSecurityContext */
1545     NULL,   /* ImportSecurityContextW */
1546     NULL,   /* AddCredentialsW */
1547     NULL,   /* Reserved8 */
1548     NULL,   /* QuerySecurityContextToken */
1549     ntlm_EncryptMessage,                /* EncryptMessage */
1550     ntlm_DecryptMessage,                /* DecryptMessage */
1551     NULL,   /* SetContextAttributesW */
1552 };
1553
1554 #define NTLM_COMMENT \
1555    { 'N', 'T', 'L', 'M', ' ', \
1556      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1557      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1558
1559 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1560 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1561
1562 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1563
1564 static char ntlm_name_A[] = NTLM_NAME;
1565 static WCHAR ntlm_name_W[] = NTLM_NAME;
1566
1567 /* According to Windows, NTLM has the following capabilities.  */
1568 #define CAPS ( \
1569         SECPKG_FLAG_INTEGRITY | \
1570         SECPKG_FLAG_PRIVACY | \
1571         SECPKG_FLAG_TOKEN_ONLY | \
1572         SECPKG_FLAG_CONNECTION | \
1573         SECPKG_FLAG_MULTI_REQUIRED | \
1574         SECPKG_FLAG_IMPERSONATION | \
1575         SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1576         SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1577
1578 static const SecPkgInfoW infoW = {
1579     CAPS,
1580     1,
1581     RPC_C_AUTHN_WINNT,
1582     NTLM_MAX_BUF,
1583     ntlm_name_W,
1584     ntlm_comment_W
1585 };
1586
1587 static const SecPkgInfoA infoA = {
1588     CAPS,
1589     1,
1590     RPC_C_AUTHN_WINNT,
1591     NTLM_MAX_BUF,
1592     ntlm_name_A,
1593     ntlm_comment_A
1594 };
1595
1596 void SECUR32_initNTLMSP(void)
1597 {
1598     SECURITY_STATUS ret;
1599     PNegoHelper helper;
1600     static CHAR ntlm_auth[] = "ntlm_auth",
1601                 version[]   = "--version";
1602
1603     SEC_CHAR *args[] = {
1604         ntlm_auth,
1605         version,
1606         NULL };
1607
1608     if((ret = fork_helper(&helper, "ntlm_auth", args)) != SEC_E_OK)
1609     {
1610         /* Cheat and allocate a helper anyway, so cleanup later will work. */
1611         helper = HeapAlloc(GetProcessHeap(),0, sizeof(PNegoHelper));
1612         helper->version = -1;
1613     }
1614     else
1615         check_version(helper);
1616
1617     if(helper->version > 2)
1618     {
1619         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
1620         SECUR32_addPackages(provider, 1L, &infoA, &infoW);
1621     }
1622     cleanup_helper(helper);
1623 }