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

   1 /*
   2  * Copyright 2005, 2006 Kai Blin
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  * This file implements the NTLM security provider.
  19  */
  20
  21 #include <assert.h>
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "winnls.h"
  27 #include "wincred.h"
  28 #include "rpc.h"
  29 #include "sspi.h"
  30 #include "lm.h"
  31 #include "secur32_priv.h"
  32 #include "hmac_md5.h"
  33 #include "wine/unicode.h"
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
  37
  38 #define NTLM_MAX_BUF 1904
  39 #define MIN_NTLM_AUTH_MAJOR_VERSION 3
  40 #define MIN_NTLM_AUTH_MINOR_VERSION 0
  41 #define MIN_NTLM_AUTH_MICRO_VERSION 25
  42
  43 static CHAR ntlm_auth[] = "ntlm_auth";
  44
  45 typedef struct _NtlmCredentials
  46 {
  47     HelperMode mode;
  48
  49     /* these are all in the Unix codepage */
  50     char *username_arg;
  51     char *domain_arg;
  52     char *password; /* not nul-terminated */
  53     int pwlen;
  54 } NtlmCredentials, *PNtlmCredentials;
  55
  56 /***********************************************************************
  57  *              QueryCredentialsAttributesA
  58  */
  59 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
  60         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  61 {
  62     SECURITY_STATUS ret;
  63
  64     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  65
  66     if(ulAttribute == SECPKG_ATTR_NAMES)
  67     {
  68         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  69         ret = SEC_E_UNSUPPORTED_FUNCTION;
  70     }
  71     else
  72         ret = SEC_E_UNSUPPORTED_FUNCTION;
  73
  74     return ret;
  75 }
  76
  77 /***********************************************************************
  78  *              QueryCredentialsAttributesW
  79  */
  80 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
  81         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  82 {
  83     SECURITY_STATUS ret;
  84
  85     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  86
  87     if(ulAttribute == SECPKG_ATTR_NAMES)
  88     {
  89         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  90         ret = SEC_E_UNSUPPORTED_FUNCTION;
  91     }
  92     else
  93         ret = SEC_E_UNSUPPORTED_FUNCTION;
  94
  95     return ret;
  96 }
  97
  98 static char *ntlm_GetUsernameArg(LPCWSTR userW, INT userW_length)
  99 {
 100     static const char username_arg[] = "--username=";
 101     char *user;
 102     int unixcp_size;
 103
 104     unixcp_size =  WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 105         userW, userW_length, NULL, 0, NULL, NULL) + sizeof(username_arg);
 106     user = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 107     if (!user) return NULL;
 108     memcpy(user, username_arg, sizeof(username_arg) - 1);
 109     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, userW, userW_length,
 110         user + sizeof(username_arg) - 1,
 111         unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
 112     user[unixcp_size - 1] = '\0';
 113     return user;
 114 }
 115
 116 static char *ntlm_GetDomainArg(LPCWSTR domainW, INT domainW_length)
 117 {
 118     static const char domain_arg[] = "--domain=";
 119     char *domain;
 120     int unixcp_size;
 121
 122     unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 123         domainW, domainW_length, NULL, 0,  NULL, NULL) + sizeof(domain_arg);
 124     domain = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 125     if (!domain) return NULL;
 126     memcpy(domain, domain_arg, sizeof(domain_arg) - 1);
 127     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domainW,
 128         domainW_length, domain + sizeof(domain_arg) - 1,
 129         unixcp_size - sizeof(domain) + 1, NULL, NULL);
 130     domain[unixcp_size - 1] = '\0';
 131     return domain;
 132 }
 133
 134 /***********************************************************************
 135  *              AcquireCredentialsHandleW
 136  */
 137 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
 138  SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
 139  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 140  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 141 {
 142     SECURITY_STATUS ret;
 143     PNtlmCredentials ntlm_cred = NULL;
 144     SEC_WCHAR *username = NULL, *domain = NULL;
 145
 146     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 147      debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
 148      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 149
 150     switch(fCredentialUse)
 151     {
 152         case SECPKG_CRED_INBOUND:
 153             ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 154             if (!ntlm_cred)
 155                 ret = SEC_E_INSUFFICIENT_MEMORY;
 156             else
 157             {
 158                 ntlm_cred->mode = NTLM_SERVER;
 159                 ntlm_cred->username_arg = NULL;
 160                 ntlm_cred->domain_arg = NULL;
 161                 ntlm_cred->password = NULL;
 162                 ntlm_cred->pwlen = 0;
 163                 phCredential->dwUpper = fCredentialUse;
 164                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 165                 ret = SEC_E_OK;
 166             }
 167             break;
 168         case SECPKG_CRED_OUTBOUND:
 169             {
 170                 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 171                 if (!ntlm_cred)
 172                 {
 173                     ret = SEC_E_INSUFFICIENT_MEMORY;
 174                     break;
 175                 }
 176                 ntlm_cred->mode = NTLM_CLIENT;
 177                 ntlm_cred->username_arg = NULL;
 178                 ntlm_cred->domain_arg = NULL;
 179                 ntlm_cred->password = NULL;
 180                 ntlm_cred->pwlen = 0;
 181
 182                 if(pAuthData != NULL)
 183                 {
 184                     PSEC_WINNT_AUTH_IDENTITY_W auth_data =
 185                         (PSEC_WINNT_AUTH_IDENTITY_W)pAuthData;
 186
 187                     TRACE("Username is %s\n", debugstr_wn(auth_data->User, auth_data->UserLength));
 188                     TRACE("Domain name is %s\n", debugstr_wn(auth_data->Domain, auth_data->DomainLength));
 189
 190                     ntlm_cred->username_arg = ntlm_GetUsernameArg(auth_data->User, auth_data->UserLength);
 191                     ntlm_cred->domain_arg = ntlm_GetDomainArg(auth_data->Domain, auth_data->DomainLength);
 192
 193                     if(auth_data->PasswordLength != 0)
 194                     {
 195                         ntlm_cred->pwlen = WideCharToMultiByte(CP_UNIXCP,
 196                                                                WC_NO_BEST_FIT_CHARS, auth_data->Password,
 197                                                                auth_data->PasswordLength, NULL, 0, NULL,
 198                                                                NULL);
 199
 200                         ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
 201                                                         ntlm_cred->pwlen);
 202
 203                         WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 204                                             auth_data->Password, auth_data->PasswordLength,
 205                                             ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
 206                     }
 207                 }
 208
 209                 phCredential->dwUpper = fCredentialUse;
 210                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 211                 TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
 212                       phCredential->dwUpper, phCredential->dwLower);
 213                 ret = SEC_E_OK;
 214                 break;
 215             }
 216         case SECPKG_CRED_BOTH:
 217             FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
 218             ret = SEC_E_UNSUPPORTED_FUNCTION;
 219             phCredential = NULL;
 220             break;
 221         default:
 222             phCredential = NULL;
 223             ret = SEC_E_UNKNOWN_CREDENTIALS;
 224     }
 225
 226     HeapFree(GetProcessHeap(), 0, username);
 227     HeapFree(GetProcessHeap(), 0, domain);
 228
 229     return ret;
 230 }
 231
 232 /***********************************************************************
 233  *              AcquireCredentialsHandleA
 234  */
 235 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
 236  SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
 237  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 238  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 239 {
 240     SECURITY_STATUS ret;
 241     int user_sizeW, domain_sizeW, passwd_sizeW;
 242
 243     SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
 244
 245     PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
 246     PSEC_WINNT_AUTH_IDENTITY_A identity  = NULL;
 247
 248     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 249      debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
 250      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 251
 252     if(pszPackage != NULL)
 253     {
 254         int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
 255                 NULL, 0);
 256
 257         package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
 258                 sizeof(SEC_WCHAR));
 259         MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
 260     }
 261
 262
 263     if(pAuthData != NULL)
 264     {
 265         identity = (PSEC_WINNT_AUTH_IDENTITY_A)pAuthData;
 266
 267         if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
 268         {
 269             pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
 270                     sizeof(SEC_WINNT_AUTH_IDENTITY_W));
 271
 272             if(identity->UserLength != 0)
 273             {
 274                 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
 275                     (LPCSTR)identity->User, identity->UserLength, NULL, 0);
 276                 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
 277                         sizeof(SEC_WCHAR));
 278                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
 279                     identity->UserLength, user, user_sizeW);
 280             }
 281             else
 282             {
 283                 user_sizeW = 0;
 284             }
 285
 286             if(identity->DomainLength != 0)
 287             {
 288                 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
 289                     (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
 290                 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
 291                     * sizeof(SEC_WCHAR));
 292                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
 293                     identity->DomainLength, domain, domain_sizeW);
 294             }
 295             else
 296             {
 297                 domain_sizeW = 0;
 298             }
 299
 300             if(identity->PasswordLength != 0)
 301             {
 302                 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
 303                     (LPCSTR)identity->Password, identity->PasswordLength,
 304                     NULL, 0);
 305                 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
 306                     * sizeof(SEC_WCHAR));
 307                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
 308                     identity->PasswordLength, passwd, passwd_sizeW);
 309             }
 310             else
 311             {
 312                 passwd_sizeW = 0;
 313             }
 314
 315             pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
 316             pAuthDataW->User = user;
 317             pAuthDataW->UserLength = user_sizeW;
 318             pAuthDataW->Domain = domain;
 319             pAuthDataW->DomainLength = domain_sizeW;
 320             pAuthDataW->Password = passwd;
 321             pAuthDataW->PasswordLength = passwd_sizeW;
 322         }
 323         else
 324         {
 325             pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
 326         }
 327     }
 328
 329     ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
 330             pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
 331             ptsExpiry);
 332
 333     HeapFree(GetProcessHeap(), 0, package);
 334     HeapFree(GetProcessHeap(), 0, user);
 335     HeapFree(GetProcessHeap(), 0, domain);
 336     HeapFree(GetProcessHeap(), 0, passwd);
 337     if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
 338         HeapFree(GetProcessHeap(), 0, pAuthDataW);
 339
 340     return ret;
 341 }
 342
 343 /*************************************************************************
 344  *             ntlm_GetTokenBufferIndex
 345  * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
 346  * Returns index if found or -1 if not found.
 347  */
 348 static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
 349 {
 350     UINT i;
 351
 352     TRACE("%p\n", pMessage);
 353
 354     for( i = 0; i < pMessage->cBuffers; ++i )
 355     {
 356         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
 357             return i;
 358     }
 359
 360     return -1;
 361 }
 362
 363 /*************************************************************************
 364  *             ntlm_GetDataBufferIndex
 365  * Calculates the index of the first secbuffer with BufferType == SECBUFFER_DATA
 366  * Returns index if found or -1 if not found.
 367  */
 368 static int ntlm_GetDataBufferIndex(PSecBufferDesc pMessage)
 369 {
 370     UINT i;
 371
 372     TRACE("%p\n", pMessage);
 373
 374     for( i = 0; i < pMessage->cBuffers; ++i )
 375     {
 376         if(pMessage->pBuffers[i].BufferType == SECBUFFER_DATA)
 377             return i;
 378     }
 379
 380     return -1;
 381 }
 382
 383 static BOOL ntlm_GetCachedCredential(const SEC_WCHAR *pszTargetName, PCREDENTIALW *cred)
 384 {
 385     LPCWSTR p;
 386     LPCWSTR pszHost;
 387     LPWSTR pszHostOnly;
 388     BOOL ret;
 389
 390     if (!pszTargetName)
 391         return FALSE;
 392
 393     /* try to get the start of the hostname from service principal name (SPN) */
 394     pszHost = strchrW(pszTargetName, '/');
 395     if (pszHost)
 396     {
 397         /* skip slash character */
 398         pszHost++;
 399
 400         /* find end of host by detecting start of instance port or start of referrer */
 401         p = strchrW(pszHost, ':');
 402         if (!p)
 403             p = strchrW(pszHost, '/');
 404         if (!p)
 405             p = pszHost + strlenW(pszHost);
 406     }
 407     else /* otherwise not an SPN, just a host */
 408         p = pszHost + strlenW(pszHost);
 409
 410     pszHostOnly = HeapAlloc(GetProcessHeap(), 0, (p - pszHost + 1) * sizeof(WCHAR));
 411     if (!pszHostOnly)
 412         return FALSE;
 413
 414     memcpy(pszHostOnly, pszHost, (p - pszHost) * sizeof(WCHAR));
 415     pszHostOnly[p - pszHost] = '\0';
 416
 417     ret = CredReadW(pszHostOnly, CRED_TYPE_DOMAIN_PASSWORD, 0, cred);
 418
 419     HeapFree(GetProcessHeap(), 0, pszHostOnly);
 420     return ret;
 421 }
 422
 423 /***********************************************************************
 424  *              InitializeSecurityContextW
 425  */
 426 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
 427  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 428  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 429  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 430  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 431 {
 432     SECURITY_STATUS ret;
 433     PNtlmCredentials ntlm_cred = NULL;
 434     PNegoHelper helper = NULL;
 435     ULONG ctxt_attr = 0;
 436     char* buffer, *want_flags = NULL;
 437     PBYTE bin;
 438     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 439     int token_idx;
 440     SEC_CHAR *username = NULL;
 441     SEC_CHAR *domain = NULL;
 442     SEC_CHAR *password = NULL;
 443
 444     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 445      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 446      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 447
 448     /****************************************
 449      * When communicating with the client, there can be the
 450      * following reply packets:
 451      * YR <base64 blob>         should be sent to the server
 452      * PW                       should be sent back to helper with
 453      *                          base64 encoded password
 454      * AF <base64 blob>         client is done, blob should be
 455      *                          sent to server with KK prefixed
 456      * GF <string list>         A string list of negotiated flags
 457      * GK <base64 blob>         base64 encoded session key
 458      * BH <char reason>         something broke
 459      */
 460     /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
 461
 462     if(TargetDataRep == SECURITY_NETWORK_DREP){
 463         TRACE("Setting SECURITY_NETWORK_DREP\n");
 464     }
 465
 466     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 467     bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
 468
 469     if((phContext == NULL) && (pInput == NULL))
 470     {
 471         static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
 472         static CHAR credentials_argv[] = "--use-cached-creds";
 473         SEC_CHAR *client_argv[5];
 474         int pwlen = 0;
 475
 476         TRACE("First time in ISC()\n");
 477
 478         if(!phCredential)
 479         {
 480             ret = SEC_E_INVALID_HANDLE;
 481             goto isc_end;
 482         }
 483
 484         /* As the server side of sspi never calls this, make sure that
 485          * the handler is a client handler.
 486          */
 487         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 488         if(ntlm_cred->mode != NTLM_CLIENT)
 489         {
 490             TRACE("Cred mode = %d\n", ntlm_cred->mode);
 491             ret = SEC_E_INVALID_HANDLE;
 492             goto isc_end;
 493         }
 494
 495         client_argv[0] = ntlm_auth;
 496         client_argv[1] = helper_protocol;
 497         if (!ntlm_cred->username_arg && !ntlm_cred->domain_arg)
 498         {
 499             LPWKSTA_USER_INFO_1 ui = NULL;
 500             NET_API_STATUS status;
 501             PCREDENTIALW cred;
 502
 503             if (ntlm_GetCachedCredential(pszTargetName, &cred))
 504             {
 505                 LPWSTR p;
 506                 p = strchrW(cred->UserName, '\\');
 507                 if (p)
 508                 {
 509                     domain = ntlm_GetDomainArg(cred->UserName, p - cred->UserName);
 510                     p++;
 511                 }
 512                 else
 513                 {
 514                     domain = ntlm_GetDomainArg(NULL, 0);
 515                     p = cred->UserName;
 516                 }
 517
 518                 username = ntlm_GetUsernameArg(p, -1);
 519
 520                 if(cred->CredentialBlobSize != 0)
 521                 {
 522                     pwlen = WideCharToMultiByte(CP_UNIXCP,
 523                         WC_NO_BEST_FIT_CHARS, (LPWSTR)cred->CredentialBlob,
 524                         cred->CredentialBlobSize / sizeof(WCHAR), NULL, 0,
 525                         NULL, NULL);
 526
 527                     password = HeapAlloc(GetProcessHeap(), 0, pwlen);
 528
 529                     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 530                                         (LPWSTR)cred->CredentialBlob,
 531                                         cred->CredentialBlobSize / sizeof(WCHAR),
 532                                         password, pwlen, NULL, NULL);
 533                 }
 534
 535                 CredFree(cred);
 536
 537                 client_argv[2] = username;
 538                 client_argv[3] = domain;
 539                 client_argv[4] = NULL;
 540             }
 541             else
 542             {
 543                 status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
 544                 if (status != NERR_Success || ui == NULL)
 545                 {
 546                     ret = SEC_E_NO_CREDENTIALS;
 547                     goto isc_end;
 548                 }
 549                 username = ntlm_GetUsernameArg(ui->wkui1_username, -1);
 550
 551                 TRACE("using cached credentials\n");
 552
 553                 client_argv[2] = username;
 554                 client_argv[3] = credentials_argv;
 555                 client_argv[4] = NULL;
 556             }
 557         }
 558         else
 559         {
 560             client_argv[2] = ntlm_cred->username_arg;
 561             client_argv[3] = ntlm_cred->domain_arg;
 562             client_argv[4] = NULL;
 563         }
 564
 565         if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
 566             goto isc_end;
 567
 568         helper->mode = NTLM_CLIENT;
 569         helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 570         if (!helper->session_key)
 571         {
 572             cleanup_helper(helper);
 573             ret = SEC_E_INSUFFICIENT_MEMORY;
 574             goto isc_end;
 575         }
 576
 577         /* Generate the dummy session key = MD4(MD4(password))*/
 578         if(password || ntlm_cred->password)
 579         {
 580             SEC_WCHAR *unicode_password;
 581             int passwd_lenW;
 582
 583             TRACE("Converting password to unicode.\n");
 584             passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 585                                               password ? (LPCSTR)password : (LPCSTR)ntlm_cred->password,
 586                                               password ? pwlen : ntlm_cred->pwlen,
 587                                               NULL, 0);
 588             unicode_password = HeapAlloc(GetProcessHeap(), 0,
 589                                          passwd_lenW * sizeof(SEC_WCHAR));
 590             MultiByteToWideChar(CP_ACP, 0, password ? (LPCSTR)password : (LPCSTR)ntlm_cred->password,
 591                                 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
 592
 593             SECUR32_CreateNTLMv1SessionKey((PBYTE)unicode_password,
 594                                            passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
 595
 596             HeapFree(GetProcessHeap(), 0, unicode_password);
 597         }
 598         else
 599             memset(helper->session_key, 0, 16);
 600
 601         /* Allocate space for a maximal string of
 602          * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
 603          * NTLMSSP_FEATURE_SESSION_KEY"
 604          */
 605         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 606         if(want_flags == NULL)
 607         {
 608             cleanup_helper(helper);
 609             ret = SEC_E_INSUFFICIENT_MEMORY;
 610             goto isc_end;
 611         }
 612         lstrcpyA(want_flags, "SF");
 613         if(fContextReq & ISC_REQ_CONFIDENTIALITY)
 614         {
 615             char *ptr;
 616             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SEAL")) == NULL)
 617                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 618         }
 619         if(fContextReq & ISC_REQ_CONNECTION)
 620             ctxt_attr |= ISC_RET_CONNECTION;
 621         if(fContextReq & ISC_REQ_EXTENDED_ERROR)
 622             ctxt_attr |= ISC_RET_EXTENDED_ERROR;
 623         if(fContextReq & ISC_REQ_INTEGRITY)
 624         {
 625             char *ptr;
 626             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
 627                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 628         }
 629         if(fContextReq & ISC_REQ_MUTUAL_AUTH)
 630             ctxt_attr |= ISC_RET_MUTUAL_AUTH;
 631         if(fContextReq & ISC_REQ_REPLAY_DETECT)
 632         {
 633             char *ptr;
 634             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
 635                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 636         }
 637         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 638         {
 639             char *ptr;
 640             if((ptr = strstr(want_flags, "NTLMSSP_FEATURE_SIGN")) == NULL)
 641                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 642         }
 643         if(fContextReq & ISC_REQ_STREAM)
 644             FIXME("ISC_REQ_STREAM\n");
 645         if(fContextReq & ISC_REQ_USE_DCE_STYLE)
 646             ctxt_attr |= ISC_RET_USED_DCE_STYLE;
 647         if(fContextReq & ISC_REQ_DELEGATE)
 648             ctxt_attr |= ISC_RET_DELEGATE;
 649
 650         /* If no password is given, try to use cached credentials. Fall back to an empty
 651          * password if this failed. */
 652         if(!password && !ntlm_cred->password)
 653         {
 654             lstrcpynA(buffer, "OK", max_len-1);
 655             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 656             {
 657                 cleanup_helper(helper);
 658                 goto isc_end;
 659             }
 660             /* If the helper replied with "PW", using cached credentials failed */
 661             if(!strncmp(buffer, "PW", 2))
 662             {
 663                 TRACE("Using cached credentials failed.\n");
 664                 ret = SEC_E_NO_CREDENTIALS;
 665                 goto isc_end;
 666             }
 667             else /* Just do a noop on the next run */
 668                 lstrcpynA(buffer, "OK", max_len-1);
 669         }
 670         else
 671         {
 672             lstrcpynA(buffer, "PW ", max_len-1);
 673             if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
 674                         password ? pwlen : ntlm_cred->pwlen, buffer+3,
 675                         max_len-3, &buffer_len)) != SEC_E_OK)
 676             {
 677                 cleanup_helper(helper);
 678                 goto isc_end;
 679             }
 680
 681         }
 682
 683         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 684         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 685         {
 686             cleanup_helper(helper);
 687             goto isc_end;
 688         }
 689
 690         TRACE("Helper returned %s\n", debugstr_a(buffer));
 691
 692         if(lstrlenA(want_flags) > 2)
 693         {
 694             TRACE("Want flags are %s\n", debugstr_a(want_flags));
 695             lstrcpynA(buffer, want_flags, max_len-1);
 696             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 697                     != SEC_E_OK)
 698                 goto isc_end;
 699             if(!strncmp(buffer, "BH", 2))
 700                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
 701         }
 702
 703         lstrcpynA(buffer, "YR", max_len-1);
 704
 705         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 706         {
 707             cleanup_helper(helper);
 708             goto isc_end;
 709         }
 710
 711         TRACE("%s\n", buffer);
 712
 713         if(strncmp(buffer, "YR ", 3) != 0)
 714         {
 715             /* Something borked */
 716             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 717             ret = SEC_E_INTERNAL_ERROR;
 718             cleanup_helper(helper);
 719             goto isc_end;
 720         }
 721         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 722                         max_len-1, &bin_len)) != SEC_E_OK)
 723         {
 724             cleanup_helper(helper);
 725             goto isc_end;
 726         }
 727
 728         /* put the decoded client blob into the out buffer */
 729
 730         phNewContext->dwUpper = ctxt_attr;
 731         phNewContext->dwLower = (ULONG_PTR)helper;
 732
 733         ret = SEC_I_CONTINUE_NEEDED;
 734     }
 735     else
 736     {
 737         int input_token_idx;
 738
 739         /* handle second call here */
 740         /* encode server data to base64 */
 741         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
 742         {
 743             ret = SEC_E_INVALID_TOKEN;
 744             goto isc_end;
 745         }
 746
 747         if(!phContext)
 748         {
 749             ret = SEC_E_INVALID_HANDLE;
 750             goto isc_end;
 751         }
 752
 753         /* As the server side of sspi never calls this, make sure that
 754          * the handler is a client handler.
 755          */
 756         helper = (PNegoHelper)phContext->dwLower;
 757         if(helper->mode != NTLM_CLIENT)
 758         {
 759             TRACE("Helper mode = %d\n", helper->mode);
 760             ret = SEC_E_INVALID_HANDLE;
 761             goto isc_end;
 762         }
 763
 764         if (!pInput->pBuffers[input_token_idx].pvBuffer)
 765         {
 766             ret = SEC_E_INTERNAL_ERROR;
 767             goto isc_end;
 768         }
 769
 770         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
 771         {
 772             TRACE("pInput->pBuffers[%d].cbBuffer is: %ld\n",
 773                     input_token_idx,
 774                     pInput->pBuffers[input_token_idx].cbBuffer);
 775             ret = SEC_E_INVALID_TOKEN;
 776             goto isc_end;
 777         }
 778         else
 779             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
 780
 781         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
 782
 783         lstrcpynA(buffer, "TT ", max_len-1);
 784
 785         if((ret = encodeBase64(bin, bin_len, buffer+3,
 786                         max_len-3, &buffer_len)) != SEC_E_OK)
 787             goto isc_end;
 788
 789         TRACE("Server sent: %s\n", debugstr_a(buffer));
 790
 791         /* send TT base64 blob to ntlm_auth */
 792         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 793             goto isc_end;
 794
 795         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 796
 797         if( (strncmp(buffer, "KK ", 3) != 0) &&
 798                 (strncmp(buffer, "AF ", 3) !=0))
 799         {
 800             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 801             ret = SEC_E_INVALID_TOKEN;
 802             goto isc_end;
 803         }
 804
 805         /* decode the blob and send it to server */
 806         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 807                         &bin_len)) != SEC_E_OK)
 808         {
 809             goto isc_end;
 810         }
 811
 812         phNewContext->dwUpper = ctxt_attr;
 813         phNewContext->dwLower = (ULONG_PTR)helper;
 814
 815         ret = SEC_E_OK;
 816     }
 817
 818     /* put the decoded client blob into the out buffer */
 819
 820     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
 821     {
 822         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
 823         ret = SEC_E_BUFFER_TOO_SMALL;
 824         if ((phContext == NULL) && (pInput == NULL))
 825         {
 826             cleanup_helper(helper);
 827             phNewContext->dwUpper = 0;
 828             phNewContext->dwLower = 0;
 829         }
 830         goto isc_end;
 831     }
 832
 833     if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
 834     {
 835         pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
 836         pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 837     }
 838     else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
 839     {
 840         TRACE("out buffer is NULL or has not enough space\n");
 841         ret = SEC_E_BUFFER_TOO_SMALL;
 842         if ((phContext == NULL) && (pInput == NULL))
 843         {
 844             cleanup_helper(helper);
 845             phNewContext->dwUpper = 0;
 846             phNewContext->dwLower = 0;
 847         }
 848         goto isc_end;
 849     }
 850
 851     if (!pOutput->pBuffers[token_idx].pvBuffer)
 852     {
 853         TRACE("out buffer is NULL\n");
 854         ret = SEC_E_INTERNAL_ERROR;
 855         if ((phContext == NULL) && (pInput == NULL))
 856         {
 857             cleanup_helper(helper);
 858             phNewContext->dwUpper = 0;
 859             phNewContext->dwLower = 0;
 860         }
 861         goto isc_end;
 862     }
 863
 864     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 865     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
 866
 867     if(ret == SEC_E_OK)
 868     {
 869         TRACE("Getting negotiated flags\n");
 870         lstrcpynA(buffer, "GF", max_len - 1);
 871         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 872             goto isc_end;
 873
 874         if(buffer_len < 3)
 875         {
 876             TRACE("No flags negotiated.\n");
 877             helper->neg_flags = 0l;
 878         }
 879         else
 880         {
 881             TRACE("Negotiated %s\n", debugstr_a(buffer));
 882             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
 883             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
 884         }
 885
 886         TRACE("Getting session key\n");
 887         lstrcpynA(buffer, "GK", max_len - 1);
 888         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 889             goto isc_end;
 890
 891         if(strncmp(buffer, "BH", 2) == 0)
 892             TRACE("No key negotiated.\n");
 893         else if(strncmp(buffer, "GK ", 3) == 0)
 894         {
 895             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 896                             &bin_len)) != SEC_E_OK)
 897             {
 898                 TRACE("Failed to decode session key\n");
 899             }
 900             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 901             HeapFree(GetProcessHeap(), 0, helper->session_key);
 902             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 903             if(!helper->session_key)
 904             {
 905                 TRACE("Failed to allocate memory for session key\n");
 906                 ret = SEC_E_INTERNAL_ERROR;
 907                 goto isc_end;
 908             }
 909             memcpy(helper->session_key, bin, bin_len);
 910         }
 911
 912         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 913         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 914         helper->crypt.ntlm.seq_num = 0l;
 915         SECUR32_CreateNTLMv2SubKeys(helper);
 916         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
 917         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
 918         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
 919                          helper->crypt.ntlm2.send_seal_key, 16);
 920         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
 921                          helper->crypt.ntlm2.recv_seal_key, 16);
 922         helper->crypt.ntlm2.send_seq_no = 0l;
 923         helper->crypt.ntlm2.recv_seq_no = 0l;
 924     }
 925
 926 isc_end:
 927     HeapFree(GetProcessHeap(), 0, username);
 928     HeapFree(GetProcessHeap(), 0, domain);
 929     HeapFree(GetProcessHeap(), 0, password);
 930     HeapFree(GetProcessHeap(), 0, want_flags);
 931     HeapFree(GetProcessHeap(), 0, buffer);
 932     HeapFree(GetProcessHeap(), 0, bin);
 933     return ret;
 934 }
 935
 936 /***********************************************************************
 937  *              InitializeSecurityContextA
 938  */
 939 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 940  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 941  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 942  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 943  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 944 {
 945     SECURITY_STATUS ret;
 946     SEC_WCHAR *target = NULL;
 947
 948     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 949      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 950      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 951
 952     if(pszTargetName != NULL)
 953     {
 954         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 955             strlen(pszTargetName)+1, NULL, 0);
 956         target = HeapAlloc(GetProcessHeap(), 0, target_size *
 957                 sizeof(SEC_WCHAR));
 958         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 959             target, target_size);
 960     }
 961
 962     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 963             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 964             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 965
 966     HeapFree(GetProcessHeap(), 0, target);
 967     return ret;
 968 }
 969
 970 /***********************************************************************
 971  *              AcceptSecurityContext
 972  */
 973 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 974  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 975  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 976  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 977 {
 978     SECURITY_STATUS ret;
 979     char *buffer, *want_flags = NULL;
 980     PBYTE bin;
 981     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 982     ULONG ctxt_attr = 0;
 983     PNegoHelper helper;
 984     PNtlmCredentials ntlm_cred;
 985
 986     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 987      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 988      ptsExpiry);
 989
 990     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 991     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 992
 993     if(TargetDataRep == SECURITY_NETWORK_DREP){
 994         TRACE("Using SECURITY_NETWORK_DREP\n");
 995     }
 996
 997     if(phContext == NULL)
 998     {
 999         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
1000         SEC_CHAR *server_argv[] = { ntlm_auth,
1001             server_helper_protocol,
1002             NULL };
1003
1004         if (!phCredential)
1005         {
1006             ret = SEC_E_INVALID_HANDLE;
1007             goto asc_end;
1008         }
1009
1010         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1011
1012         if(ntlm_cred->mode != NTLM_SERVER)
1013         {
1014             ret = SEC_E_INVALID_HANDLE;
1015             goto asc_end;
1016         }
1017
1018         /* This is the first call to AcceptSecurityHandle */
1019         if(pInput == NULL)
1020         {
1021             ret = SEC_E_INCOMPLETE_MESSAGE;
1022             goto asc_end;
1023         }
1024
1025         if(pInput->cBuffers < 1)
1026         {
1027             ret = SEC_E_INCOMPLETE_MESSAGE;
1028             goto asc_end;
1029         }
1030
1031         if(pInput->pBuffers[0].cbBuffer > max_len)
1032         {
1033             ret = SEC_E_INVALID_TOKEN;
1034             goto asc_end;
1035         }
1036         else
1037             bin_len = pInput->pBuffers[0].cbBuffer;
1038
1039         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1040             SEC_E_OK)
1041         {
1042             ret = SEC_E_INTERNAL_ERROR;
1043             goto asc_end;
1044         }
1045         helper->mode = NTLM_SERVER;
1046
1047         /* Handle all the flags */
1048         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1049         if(want_flags == NULL)
1050         {
1051             TRACE("Failed to allocate memory for the want_flags!\n");
1052             ret = SEC_E_INSUFFICIENT_MEMORY;
1053             cleanup_helper(helper);
1054             goto asc_end;
1055         }
1056         lstrcpyA(want_flags, "SF");
1057         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1058         {
1059             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1060         }
1061         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1062         {
1063             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1064         }
1065         if(fContextReq & ASC_REQ_CONNECTION)
1066         {
1067             /* This is default, so we'll enable it */
1068             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1069             ctxt_attr |= ASC_RET_CONNECTION;
1070         }
1071         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1072         {
1073             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1074         }
1075         if(fContextReq & ASC_REQ_INTEGRITY)
1076         {
1077             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1078         }
1079         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1080         {
1081             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1082         }
1083         if(fContextReq & ASC_REQ_REPLAY_DETECT)
1084         {
1085             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1086         }
1087         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1088         {
1089             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1090         }
1091         if(fContextReq & ISC_REQ_STREAM)
1092         {
1093             FIXME("ASC_REQ_STREAM stub\n");
1094         }
1095         /* Done with the flags */
1096
1097         if(lstrlenA(want_flags) > 3)
1098         {
1099             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1100             lstrcpynA(buffer, want_flags, max_len - 1);
1101             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1102                     SEC_E_OK)
1103             {
1104                 cleanup_helper(helper);
1105                 goto asc_end;
1106             }
1107             if(!strncmp(buffer, "BH", 2))
1108                 TRACE("Helper doesn't understand new command set\n");
1109         }
1110
1111         /* This is the YR request from the client, encode to base64 */
1112
1113         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1114
1115         lstrcpynA(buffer, "YR ", max_len-1);
1116
1117         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1118                     &buffer_len)) != SEC_E_OK)
1119         {
1120             cleanup_helper(helper);
1121             goto asc_end;
1122         }
1123
1124         TRACE("Client sent: %s\n", debugstr_a(buffer));
1125
1126         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1127                     SEC_E_OK)
1128         {
1129             cleanup_helper(helper);
1130             goto asc_end;
1131         }
1132
1133         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1134         /* The expected answer is TT <base64 blob> */
1135
1136         if(strncmp(buffer, "TT ", 3) != 0)
1137         {
1138             ret = SEC_E_INTERNAL_ERROR;
1139             cleanup_helper(helper);
1140             goto asc_end;
1141         }
1142
1143         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1144                         &bin_len)) != SEC_E_OK)
1145         {
1146             cleanup_helper(helper);
1147             goto asc_end;
1148         }
1149
1150         /* send this to the client */
1151         if(pOutput == NULL)
1152         {
1153             ret = SEC_E_INSUFFICIENT_MEMORY;
1154             cleanup_helper(helper);
1155             goto asc_end;
1156         }
1157
1158         if(pOutput->cBuffers < 1)
1159         {
1160             ret = SEC_E_INSUFFICIENT_MEMORY;
1161             cleanup_helper(helper);
1162             goto asc_end;
1163         }
1164
1165         pOutput->pBuffers[0].cbBuffer = bin_len;
1166         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1167         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1168         ret = SEC_I_CONTINUE_NEEDED;
1169
1170     }
1171     else
1172     {
1173         /* we expect a KK request from client */
1174         if(pInput == NULL)
1175         {
1176             ret = SEC_E_INCOMPLETE_MESSAGE;
1177             goto asc_end;
1178         }
1179
1180         if(pInput->cBuffers < 1)
1181         {
1182             ret = SEC_E_INCOMPLETE_MESSAGE;
1183             goto asc_end;
1184         }
1185
1186         if(!phContext)
1187         {
1188             ret = SEC_E_INVALID_HANDLE;
1189             goto asc_end;
1190         }
1191
1192         helper = (PNegoHelper)phContext->dwLower;
1193
1194         if(helper->mode != NTLM_SERVER)
1195         {
1196             ret = SEC_E_INVALID_HANDLE;
1197             goto asc_end;
1198         }
1199
1200         if(pInput->pBuffers[0].cbBuffer > max_len)
1201         {
1202             ret = SEC_E_INVALID_TOKEN;
1203             goto asc_end;
1204         }
1205         else
1206             bin_len = pInput->pBuffers[0].cbBuffer;
1207
1208         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1209
1210         lstrcpynA(buffer, "KK ", max_len-1);
1211
1212         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1213                     &buffer_len)) != SEC_E_OK)
1214         {
1215             goto asc_end;
1216         }
1217
1218         TRACE("Client sent: %s\n", debugstr_a(buffer));
1219
1220         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1221                     SEC_E_OK)
1222         {
1223             goto asc_end;
1224         }
1225
1226         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1227
1228         /* At this point, we get a NA if the user didn't authenticate, but a BH
1229          * if ntlm_auth could not connect to winbindd. Apart from running Wine
1230          * as root, there is no way to fix this for now, so just handle this as
1231          * a failed login. */
1232         if(strncmp(buffer, "AF ", 3) != 0)
1233         {
1234             if(strncmp(buffer, "NA ", 3) == 0)
1235             {
1236                 ret = SEC_E_LOGON_DENIED;
1237                 goto asc_end;
1238             }
1239             else
1240             {
1241                 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1242
1243                 if( (buffer_len >= ntlm_pipe_err_len) &&
1244                     (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1245                              ntlm_pipe_err_len) == 0))
1246                 {
1247                     TRACE("Connection to winbindd failed\n");
1248                     ret = SEC_E_LOGON_DENIED;
1249                 }
1250                 else
1251                     ret = SEC_E_INTERNAL_ERROR;
1252
1253                 goto asc_end;
1254             }
1255         }
1256         pOutput->pBuffers[0].cbBuffer = 0;
1257         ret = SEC_E_OK;
1258
1259         TRACE("Getting negotiated flags\n");
1260         lstrcpynA(buffer, "GF", max_len - 1);
1261         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1262             goto asc_end;
1263
1264         if(buffer_len < 3)
1265         {
1266             TRACE("No flags negotiated, or helper does not support GF command\n");
1267         }
1268         else
1269         {
1270             TRACE("Negotiated %s\n", debugstr_a(buffer));
1271             sscanf(buffer + 3, "%lx", &(helper->neg_flags));
1272             TRACE("Stored 0x%08lx as flags\n", helper->neg_flags);
1273         }
1274
1275         TRACE("Getting session key\n");
1276         lstrcpynA(buffer, "GK", max_len - 1);
1277         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1278             goto asc_end;
1279
1280         if(buffer_len < 3)
1281             TRACE("Helper does not support GK command\n");
1282         else
1283         {
1284             if(strncmp(buffer, "BH ", 3) == 0)
1285             {
1286                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1287                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1288                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1289                 memset(helper->session_key, 0 , 16);
1290             }
1291             else if(strncmp(buffer, "GK ", 3) == 0)
1292             {
1293                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1294                                 &bin_len)) != SEC_E_OK)
1295                 {
1296                     TRACE("Failed to decode session key\n");
1297                 }
1298                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1299                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1300                 if(!helper->session_key)
1301                 {
1302                     TRACE("Failed to allocate memory for session key\n");
1303                     ret = SEC_E_INTERNAL_ERROR;
1304                     goto asc_end;
1305                 }
1306                 memcpy(helper->session_key, bin, 16);
1307             }
1308         }
1309         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1310         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1311         helper->crypt.ntlm.seq_num = 0l;
1312     }
1313
1314     phNewContext->dwUpper = ctxt_attr;
1315     phNewContext->dwLower = (ULONG_PTR)helper;
1316
1317 asc_end:
1318     HeapFree(GetProcessHeap(), 0, want_flags);
1319     HeapFree(GetProcessHeap(), 0, buffer);
1320     HeapFree(GetProcessHeap(), 0, bin);
1321     return ret;
1322 }
1323
1324 /***********************************************************************
1325  *              CompleteAuthToken
1326  */
1327 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1328  PSecBufferDesc pToken)
1329 {
1330     /* We never need to call CompleteAuthToken anyway */
1331     TRACE("%p %p\n", phContext, pToken);
1332     if (!phContext)
1333         return SEC_E_INVALID_HANDLE;
1334
1335     return SEC_E_OK;
1336 }
1337
1338 /***********************************************************************
1339  *              DeleteSecurityContext
1340  */
1341 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1342 {
1343     PNegoHelper helper;
1344
1345     TRACE("%p\n", phContext);
1346     if (!phContext)
1347         return SEC_E_INVALID_HANDLE;
1348
1349     helper = (PNegoHelper)phContext->dwLower;
1350
1351     phContext->dwUpper = 0;
1352     phContext->dwLower = 0;
1353
1354     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1355     HeapFree(GetProcessHeap(), 0, helper->session_key);
1356     SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1357     SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1358     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1359     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1360     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1361     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1362
1363     cleanup_helper(helper);
1364
1365     return SEC_E_OK;
1366 }
1367
1368 /***********************************************************************
1369  *              QueryContextAttributesW
1370  */
1371 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1372  ULONG ulAttribute, void *pBuffer)
1373 {
1374     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1375     if (!phContext)
1376         return SEC_E_INVALID_HANDLE;
1377
1378     switch(ulAttribute)
1379     {
1380 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1381         _x(SECPKG_ATTR_ACCESS_TOKEN);
1382         _x(SECPKG_ATTR_AUTHORITY);
1383         _x(SECPKG_ATTR_DCE_INFO);
1384         case SECPKG_ATTR_FLAGS:
1385         {
1386             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1387             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1388
1389             spcf->Flags = 0;
1390             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1391                 spcf->Flags |= ISC_RET_INTEGRITY;
1392             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1393                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1394             return SEC_E_OK;
1395         }
1396         _x(SECPKG_ATTR_KEY_INFO);
1397         _x(SECPKG_ATTR_LIFESPAN);
1398         _x(SECPKG_ATTR_NAMES);
1399         _x(SECPKG_ATTR_NATIVE_NAMES);
1400         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1401         _x(SECPKG_ATTR_PACKAGE_INFO);
1402         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1403         _x(SECPKG_ATTR_SESSION_KEY);
1404         case SECPKG_ATTR_SIZES:
1405         {
1406             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1407             spcs->cbMaxToken = NTLM_MAX_BUF;
1408             spcs->cbMaxSignature = 16;
1409             spcs->cbBlockSize = 0;
1410             spcs->cbSecurityTrailer = 16;
1411             return SEC_E_OK;
1412         }
1413         _x(SECPKG_ATTR_STREAM_SIZES);
1414         _x(SECPKG_ATTR_TARGET_INFORMATION);
1415 #undef _x
1416         default:
1417             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1418     }
1419
1420     return SEC_E_UNSUPPORTED_FUNCTION;
1421 }
1422
1423 /***********************************************************************
1424  *              QueryContextAttributesA
1425  */
1426 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1427  ULONG ulAttribute, void *pBuffer)
1428 {
1429     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1430 }
1431
1432 /***********************************************************************
1433  *              ImpersonateSecurityContext
1434  */
1435 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1436 {
1437     SECURITY_STATUS ret;
1438
1439     TRACE("%p\n", phContext);
1440     if (phContext)
1441     {
1442         ret = SEC_E_UNSUPPORTED_FUNCTION;
1443     }
1444     else
1445     {
1446         ret = SEC_E_INVALID_HANDLE;
1447     }
1448     return ret;
1449 }
1450
1451 /***********************************************************************
1452  *              RevertSecurityContext
1453  */
1454 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1455 {
1456     SECURITY_STATUS ret;
1457
1458     TRACE("%p\n", phContext);
1459     if (phContext)
1460     {
1461         ret = SEC_E_UNSUPPORTED_FUNCTION;
1462     }
1463     else
1464     {
1465         ret = SEC_E_INVALID_HANDLE;
1466     }
1467     return ret;
1468 }
1469
1470 /***********************************************************************
1471  *             ntlm_CreateSignature
1472  * As both MakeSignature and VerifySignature need this, but different keys
1473  * are needed for NTLMv2, the logic goes into a helper function.
1474  * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1475  * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1476  * the signature is encrypted after the message was encrypted, so
1477  * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1478  * false.
1479  */
1480 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1481         int token_idx, SignDirection direction, BOOL encrypt_sig)
1482 {
1483     ULONG sign_version = 1;
1484     UINT i;
1485     PBYTE sig;
1486     TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1487             encrypt_sig);
1488
1489     sig = pMessage->pBuffers[token_idx].pvBuffer;
1490
1491     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1492             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1493     {
1494         BYTE digest[16];
1495         BYTE seq_no[4];
1496         HMAC_MD5_CTX hmac_md5_ctx;
1497
1498         TRACE("Signing NTLM2 style\n");
1499
1500         if(direction == NTLM_SEND)
1501         {
1502             seq_no[0] = (helper->crypt.ntlm2.send_seq_no >>  0) & 0xff;
1503             seq_no[1] = (helper->crypt.ntlm2.send_seq_no >>  8) & 0xff;
1504             seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1505             seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1506
1507             ++(helper->crypt.ntlm2.send_seq_no);
1508
1509             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1510         }
1511         else
1512         {
1513             seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >>  0) & 0xff;
1514             seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >>  8) & 0xff;
1515             seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1516             seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1517
1518             ++(helper->crypt.ntlm2.recv_seq_no);
1519
1520             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1521         }
1522
1523         HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1524         for( i = 0; i < pMessage->cBuffers; ++i )
1525         {
1526             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1527                 HMACMD5Update(&hmac_md5_ctx, (BYTE *)pMessage->pBuffers[i].pvBuffer,
1528                         pMessage->pBuffers[i].cbBuffer);
1529         }
1530
1531         HMACMD5Final(&hmac_md5_ctx, digest);
1532
1533         if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1534         {
1535             if(direction == NTLM_SEND)
1536                 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1537             else
1538                 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1539         }
1540
1541         /* The NTLM2 signature is the sign version */
1542         sig[ 0] = (sign_version >>  0) & 0xff;
1543         sig[ 1] = (sign_version >>  8) & 0xff;
1544         sig[ 2] = (sign_version >> 16) & 0xff;
1545         sig[ 3] = (sign_version >> 24) & 0xff;
1546         /* The first 8 bytes of the digest */
1547         memcpy(sig+4, digest, 8);
1548         /* And the sequence number */
1549         memcpy(sig+12, seq_no, 4);
1550
1551         pMessage->pBuffers[token_idx].cbBuffer = 16;
1552
1553         return SEC_E_OK;
1554     }
1555     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1556     {
1557         ULONG crc = 0U;
1558         TRACE("Signing NTLM1 style\n");
1559
1560         for(i=0; i < pMessage->cBuffers; ++i)
1561         {
1562             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1563             {
1564                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1565                     pMessage->pBuffers[i].cbBuffer, crc);
1566             }
1567         }
1568
1569         sig[ 0] = (sign_version >>  0) & 0xff;
1570         sig[ 1] = (sign_version >>  8) & 0xff;
1571         sig[ 2] = (sign_version >> 16) & 0xff;
1572         sig[ 3] = (sign_version >> 24) & 0xff;
1573         memset(sig+4, 0, 4);
1574         sig[ 8] = (crc >>  0) & 0xff;
1575         sig[ 9] = (crc >>  8) & 0xff;
1576         sig[10] = (crc >> 16) & 0xff;
1577         sig[11] = (crc >> 24) & 0xff;
1578         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1579         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1580         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1581         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1582
1583         ++(helper->crypt.ntlm.seq_num);
1584
1585         if(encrypt_sig)
1586             SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1587         return SEC_E_OK;
1588     }
1589
1590     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1591     {
1592         TRACE("Creating a dummy signature.\n");
1593         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1594         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1595         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1596         pMessage->pBuffers[token_idx].cbBuffer = 16;
1597         return SEC_E_OK;
1598     }
1599
1600     return SEC_E_UNSUPPORTED_FUNCTION;
1601 }
1602
1603 /***********************************************************************
1604  *              MakeSignature
1605  */
1606 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1607  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1608 {
1609     PNegoHelper helper;
1610     int token_idx;
1611
1612     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1613     if (!phContext)
1614         return SEC_E_INVALID_HANDLE;
1615
1616     if(fQOP)
1617         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1618
1619     if(MessageSeqNo)
1620         FIXME("Ignoring MessageSeqNo\n");
1621
1622     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1623         return SEC_E_INVALID_TOKEN;
1624
1625     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1626     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1627         return SEC_E_INVALID_TOKEN;
1628
1629     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1630         return SEC_E_BUFFER_TOO_SMALL;
1631
1632     helper = (PNegoHelper)phContext->dwLower;
1633     TRACE("Negotiated flags are: 0x%08lx\n", helper->neg_flags);
1634
1635     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1636 }
1637
1638 /***********************************************************************
1639  *              VerifySignature
1640  */
1641 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1642  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1643 {
1644     PNegoHelper helper;
1645     ULONG fQOP = 0;
1646     UINT i;
1647     int token_idx;
1648     SECURITY_STATUS ret;
1649     SecBufferDesc local_desc;
1650     PSecBuffer     local_buff;
1651     BYTE          local_sig[16];
1652
1653     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1654     if(!phContext)
1655         return SEC_E_INVALID_HANDLE;
1656
1657     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1658         return SEC_E_INVALID_TOKEN;
1659
1660     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1661         return SEC_E_INVALID_TOKEN;
1662
1663     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1664         return SEC_E_BUFFER_TOO_SMALL;
1665
1666     if(MessageSeqNo)
1667         FIXME("Ignoring MessageSeqNo\n");
1668
1669     helper = (PNegoHelper)phContext->dwLower;
1670     TRACE("Negotiated flags: 0x%08lx\n", helper->neg_flags);
1671
1672     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1673
1674     local_desc.ulVersion = SECBUFFER_VERSION;
1675     local_desc.cBuffers = pMessage->cBuffers;
1676     local_desc.pBuffers = local_buff;
1677
1678     for(i=0; i < pMessage->cBuffers; ++i)
1679     {
1680         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1681         {
1682             local_buff[i].BufferType = SECBUFFER_TOKEN;
1683             local_buff[i].cbBuffer = 16;
1684             local_buff[i].pvBuffer = local_sig;
1685         }
1686         else
1687         {
1688             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1689             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1690             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1691         }
1692     }
1693
1694     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1695         return ret;
1696
1697     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1698                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1699         ret = SEC_E_MESSAGE_ALTERED;
1700     else
1701         ret = SEC_E_OK;
1702
1703     HeapFree(GetProcessHeap(), 0, local_buff);
1704     pfQOP = &fQOP;
1705
1706     return ret;
1707
1708 }
1709
1710 /***********************************************************************
1711  *             FreeCredentialsHandle
1712  */
1713 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1714         PCredHandle phCredential)
1715 {
1716     SECURITY_STATUS ret;
1717
1718     if(phCredential){
1719         PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1720         phCredential->dwUpper = 0;
1721         phCredential->dwLower = 0;
1722         if (ntlm_cred->password)
1723             memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1724         HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1725         HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1726         HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1727         ret = SEC_E_OK;
1728     }
1729     else
1730         ret = SEC_E_OK;
1731
1732     return ret;
1733 }
1734
1735 /***********************************************************************
1736  *             EncryptMessage
1737  */
1738 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1739         ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1740 {
1741     PNegoHelper helper;
1742     int token_idx, data_idx;
1743
1744     TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1745
1746     if(!phContext)
1747         return SEC_E_INVALID_HANDLE;
1748
1749     if(fQOP)
1750         FIXME("Ignoring fQOP\n");
1751
1752     if(MessageSeqNo)
1753         FIXME("Ignoring MessageSeqNo\n");
1754
1755     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1756         return SEC_E_INVALID_TOKEN;
1757
1758     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1759         return SEC_E_INVALID_TOKEN;
1760
1761     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
1762         return SEC_E_INVALID_TOKEN;
1763
1764     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1765         return SEC_E_BUFFER_TOO_SMALL;
1766
1767     helper = (PNegoHelper) phContext->dwLower;
1768
1769     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1770             helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1771     {
1772         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1773         SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1774                 (BYTE *)pMessage->pBuffers[data_idx].pvBuffer,
1775                 pMessage->pBuffers[data_idx].cbBuffer);
1776
1777         if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1778             SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1779                     ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1780
1781
1782         return SEC_E_OK;
1783     }
1784     else
1785     {
1786         PBYTE sig;
1787         ULONG save_flags;
1788
1789         /* EncryptMessage always produces real signatures, so make sure
1790          * NTLMSSP_NEGOTIATE_SIGN is set*/
1791         save_flags = helper->neg_flags;
1792         helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1793         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1794         helper->neg_flags = save_flags;
1795
1796         sig = pMessage->pBuffers[token_idx].pvBuffer;
1797
1798         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1799                 pMessage->pBuffers[data_idx].pvBuffer,
1800                 pMessage->pBuffers[data_idx].cbBuffer);
1801         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1802
1803         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1804             memset(sig+4, 0, 4);
1805
1806     }
1807
1808     return SEC_E_OK;
1809 }
1810
1811 /***********************************************************************
1812  *             DecryptMessage
1813  */
1814 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1815         PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1816 {
1817     SECURITY_STATUS ret;
1818     ULONG ntlmssp_flags_save;
1819     PNegoHelper helper;
1820     int token_idx, data_idx;
1821     TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1822
1823     if(!phContext)
1824         return SEC_E_INVALID_HANDLE;
1825
1826     if(MessageSeqNo)
1827         FIXME("Ignoring MessageSeqNo\n");
1828
1829     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1830         return SEC_E_INVALID_TOKEN;
1831
1832     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1833         return SEC_E_INVALID_TOKEN;
1834
1835     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
1836         return SEC_E_INVALID_TOKEN;
1837
1838     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1839         return SEC_E_BUFFER_TOO_SMALL;
1840
1841     helper = (PNegoHelper) phContext->dwLower;
1842
1843     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1844     {
1845         SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1846                 pMessage->pBuffers[data_idx].pvBuffer,
1847                 pMessage->pBuffers[data_idx].cbBuffer);
1848     }
1849     else
1850     {
1851         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1852                 pMessage->pBuffers[data_idx].pvBuffer,
1853                 pMessage->pBuffers[data_idx].cbBuffer);
1854     }
1855
1856     /* Make sure we use a session key for the signature check, EncryptMessage
1857      * always does that, even in the dummy case */
1858     ntlmssp_flags_save = helper->neg_flags;
1859
1860     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1861     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1862
1863     helper->neg_flags = ntlmssp_flags_save;
1864
1865     return ret;
1866 }
1867
1868 static const SecurityFunctionTableA ntlmTableA = {
1869     1,
1870     NULL,   /* EnumerateSecurityPackagesA */
1871     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1872     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1873     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1874     NULL,   /* Reserved2 */
1875     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1876     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1877     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1878     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1879     NULL,  /* ApplyControlToken */
1880     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1881     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1882     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1883     ntlm_MakeSignature,                 /* MakeSignature */
1884     ntlm_VerifySignature,               /* VerifySignature */
1885     FreeContextBuffer,                  /* FreeContextBuffer */
1886     NULL,   /* QuerySecurityPackageInfoA */
1887     NULL,   /* Reserved3 */
1888     NULL,   /* Reserved4 */
1889     NULL,   /* ExportSecurityContext */
1890     NULL,   /* ImportSecurityContextA */
1891     NULL,   /* AddCredentialsA */
1892     NULL,   /* Reserved8 */
1893     NULL,   /* QuerySecurityContextToken */
1894     ntlm_EncryptMessage,                /* EncryptMessage */
1895     ntlm_DecryptMessage,                /* DecryptMessage */
1896     NULL,   /* SetContextAttributesA */
1897 };
1898
1899 static const SecurityFunctionTableW ntlmTableW = {
1900     1,
1901     NULL,   /* EnumerateSecurityPackagesW */
1902     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1903     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1904     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1905     NULL,   /* Reserved2 */
1906     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1907     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1908     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1909     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1910     NULL,  /* ApplyControlToken */
1911     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1912     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1913     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1914     ntlm_MakeSignature,                 /* MakeSignature */
1915     ntlm_VerifySignature,               /* VerifySignature */
1916     FreeContextBuffer,                  /* FreeContextBuffer */
1917     NULL,   /* QuerySecurityPackageInfoW */
1918     NULL,   /* Reserved3 */
1919     NULL,   /* Reserved4 */
1920     NULL,   /* ExportSecurityContext */
1921     NULL,   /* ImportSecurityContextW */
1922     NULL,   /* AddCredentialsW */
1923     NULL,   /* Reserved8 */
1924     NULL,   /* QuerySecurityContextToken */
1925     ntlm_EncryptMessage,                /* EncryptMessage */
1926     ntlm_DecryptMessage,                /* DecryptMessage */
1927     NULL,   /* SetContextAttributesW */
1928 };
1929
1930 #define NTLM_COMMENT \
1931    { 'N', 'T', 'L', 'M', ' ', \
1932      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1933      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1934
1935 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1936 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1937
1938 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1939
1940 static char ntlm_name_A[] = NTLM_NAME;
1941 static WCHAR ntlm_name_W[] = NTLM_NAME;
1942
1943 /* According to Windows, NTLM has the following capabilities.  */
1944 #define CAPS ( \
1945         SECPKG_FLAG_INTEGRITY | \
1946         SECPKG_FLAG_PRIVACY | \
1947         SECPKG_FLAG_TOKEN_ONLY | \
1948         SECPKG_FLAG_CONNECTION | \
1949         SECPKG_FLAG_MULTI_REQUIRED | \
1950         SECPKG_FLAG_IMPERSONATION | \
1951         SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1952         SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1953
1954 static const SecPkgInfoW infoW = {
1955     CAPS,
1956     1,
1957     RPC_C_AUTHN_WINNT,
1958     NTLM_MAX_BUF,
1959     ntlm_name_W,
1960     ntlm_comment_W
1961 };
1962
1963 static const SecPkgInfoA infoA = {
1964     CAPS,
1965     1,
1966     RPC_C_AUTHN_WINNT,
1967     NTLM_MAX_BUF,
1968     ntlm_name_A,
1969     ntlm_comment_A
1970 };
1971
1972 void SECUR32_initNTLMSP(void)
1973 {
1974     SECURITY_STATUS ret;
1975     PNegoHelper helper;
1976     static CHAR version[] = "--version";
1977
1978     SEC_CHAR *args[] = {
1979         ntlm_auth,
1980         version,
1981         NULL };
1982
1983     if((ret = fork_helper(&helper, ntlm_auth, args)) != SEC_E_OK)
1984     {
1985         /* Cheat and allocate a helper anyway, so cleanup later will work. */
1986         helper = HeapAlloc(GetProcessHeap(),0, sizeof(PNegoHelper));
1987         helper->major = helper->minor = helper->micro = -1;
1988     }
1989     else
1990         check_version(helper);
1991
1992     if( (helper->major >  MIN_NTLM_AUTH_MAJOR_VERSION) ||
1993         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1994          helper->minor >  MIN_NTLM_AUTH_MINOR_VERSION) ||
1995         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
1996          helper->minor == MIN_NTLM_AUTH_MINOR_VERSION  &&
1997          helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
1998     {
1999         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
2000         SECUR32_addPackages(provider, 1L, &infoA, &infoW);
2001     }
2002     else
2003     {
2004         ERR("%s was not found or is outdated. "
2005             "Make sure that ntlm_auth >= %d.%d.%d is in your path.\n",
2006             ntlm_auth,
2007             MIN_NTLM_AUTH_MAJOR_VERSION,
2008             MIN_NTLM_AUTH_MINOR_VERSION,
2009             MIN_NTLM_AUTH_MICRO_VERSION);
2010         ERR("Usually, you can find it in the winbind package of your "
2011             "distribution.\n");
2012
2013     }
2014     cleanup_helper(helper);
2015 }