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 WINE_DECLARE_DEBUG_CHANNEL(winediag);
  38
  39 #define NTLM_MAX_BUF 1904
  40 #define MIN_NTLM_AUTH_MAJOR_VERSION 3
  41 #define MIN_NTLM_AUTH_MINOR_VERSION 0
  42 #define MIN_NTLM_AUTH_MICRO_VERSION 25
  43
  44 static CHAR ntlm_auth[] = "ntlm_auth";
  45
  46 typedef struct _NtlmCredentials
  47 {
  48     HelperMode mode;
  49
  50     /* these are all in the Unix codepage */
  51     char *username_arg;
  52     char *domain_arg;
  53     char *password; /* not nul-terminated */
  54     int pwlen;
  55 } NtlmCredentials, *PNtlmCredentials;
  56
  57 /***********************************************************************
  58  *              QueryCredentialsAttributesA
  59  */
  60 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesA(
  61         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  62 {
  63     SECURITY_STATUS ret;
  64
  65     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  66
  67     if(ulAttribute == SECPKG_ATTR_NAMES)
  68     {
  69         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  70         ret = SEC_E_UNSUPPORTED_FUNCTION;
  71     }
  72     else
  73         ret = SEC_E_UNSUPPORTED_FUNCTION;
  74
  75     return ret;
  76 }
  77
  78 /***********************************************************************
  79  *              QueryCredentialsAttributesW
  80  */
  81 static SECURITY_STATUS SEC_ENTRY ntlm_QueryCredentialsAttributesW(
  82         PCredHandle phCredential, ULONG ulAttribute, PVOID pBuffer)
  83 {
  84     SECURITY_STATUS ret;
  85
  86     TRACE("(%p, %d, %p)\n", phCredential, ulAttribute, pBuffer);
  87
  88     if(ulAttribute == SECPKG_ATTR_NAMES)
  89     {
  90         FIXME("SECPKG_CRED_ATTR_NAMES: stub\n");
  91         ret = SEC_E_UNSUPPORTED_FUNCTION;
  92     }
  93     else
  94         ret = SEC_E_UNSUPPORTED_FUNCTION;
  95
  96     return ret;
  97 }
  98
  99 static char *ntlm_GetUsernameArg(LPCWSTR userW, INT userW_length)
 100 {
 101     static const char username_arg[] = "--username=";
 102     char *user;
 103     int unixcp_size;
 104
 105     unixcp_size =  WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 106         userW, userW_length, NULL, 0, NULL, NULL) + sizeof(username_arg);
 107     user = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 108     if (!user) return NULL;
 109     memcpy(user, username_arg, sizeof(username_arg) - 1);
 110     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, userW, userW_length,
 111         user + sizeof(username_arg) - 1,
 112         unixcp_size - sizeof(username_arg) + 1, NULL, NULL);
 113     user[unixcp_size - 1] = '\0';
 114     return user;
 115 }
 116
 117 static char *ntlm_GetDomainArg(LPCWSTR domainW, INT domainW_length)
 118 {
 119     static const char domain_arg[] = "--domain=";
 120     char *domain;
 121     int unixcp_size;
 122
 123     unixcp_size = WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 124         domainW, domainW_length, NULL, 0,  NULL, NULL) + sizeof(domain_arg);
 125     domain = HeapAlloc(GetProcessHeap(), 0, unixcp_size);
 126     if (!domain) return NULL;
 127     memcpy(domain, domain_arg, sizeof(domain_arg) - 1);
 128     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS, domainW,
 129         domainW_length, domain + sizeof(domain_arg) - 1,
 130         unixcp_size - sizeof(domain) + 1, NULL, NULL);
 131     domain[unixcp_size - 1] = '\0';
 132     return domain;
 133 }
 134
 135 /***********************************************************************
 136  *              AcquireCredentialsHandleW
 137  */
 138 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleW(
 139  SEC_WCHAR *pszPrincipal, SEC_WCHAR *pszPackage, ULONG fCredentialUse,
 140  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 141  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 142 {
 143     SECURITY_STATUS ret;
 144     PNtlmCredentials ntlm_cred = NULL;
 145     SEC_WCHAR *username = NULL, *domain = NULL;
 146
 147     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 148      debugstr_w(pszPrincipal), debugstr_w(pszPackage), fCredentialUse,
 149      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 150
 151     switch(fCredentialUse)
 152     {
 153         case SECPKG_CRED_INBOUND:
 154             ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 155             if (!ntlm_cred)
 156                 ret = SEC_E_INSUFFICIENT_MEMORY;
 157             else
 158             {
 159                 ntlm_cred->mode = NTLM_SERVER;
 160                 ntlm_cred->username_arg = NULL;
 161                 ntlm_cred->domain_arg = NULL;
 162                 ntlm_cred->password = NULL;
 163                 ntlm_cred->pwlen = 0;
 164                 phCredential->dwUpper = fCredentialUse;
 165                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 166                 ret = SEC_E_OK;
 167             }
 168             break;
 169         case SECPKG_CRED_OUTBOUND:
 170             {
 171                 ntlm_cred = HeapAlloc(GetProcessHeap(), 0, sizeof(*ntlm_cred));
 172                 if (!ntlm_cred)
 173                 {
 174                     ret = SEC_E_INSUFFICIENT_MEMORY;
 175                     break;
 176                 }
 177                 ntlm_cred->mode = NTLM_CLIENT;
 178                 ntlm_cred->username_arg = NULL;
 179                 ntlm_cred->domain_arg = NULL;
 180                 ntlm_cred->password = NULL;
 181                 ntlm_cred->pwlen = 0;
 182
 183                 if(pAuthData != NULL)
 184                 {
 185                     PSEC_WINNT_AUTH_IDENTITY_W auth_data = 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 = 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     {
 409         pszHost = pszTargetName;
 410         p = pszHost + strlenW(pszHost);
 411     }
 412
 413     pszHostOnly = HeapAlloc(GetProcessHeap(), 0, (p - pszHost + 1) * sizeof(WCHAR));
 414     if (!pszHostOnly)
 415         return FALSE;
 416
 417     memcpy(pszHostOnly, pszHost, (p - pszHost) * sizeof(WCHAR));
 418     pszHostOnly[p - pszHost] = '\0';
 419
 420     ret = CredReadW(pszHostOnly, CRED_TYPE_DOMAIN_PASSWORD, 0, cred);
 421
 422     HeapFree(GetProcessHeap(), 0, pszHostOnly);
 423     return ret;
 424 }
 425
 426 /***********************************************************************
 427  *              InitializeSecurityContextW
 428  */
 429 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
 430  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 431  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 432  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 433  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 434 {
 435     SECURITY_STATUS ret;
 436     PNtlmCredentials ntlm_cred = NULL;
 437     PNegoHelper helper = NULL;
 438     ULONG ctxt_attr = 0;
 439     char* buffer, *want_flags = NULL;
 440     PBYTE bin;
 441     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 442     int token_idx;
 443     SEC_CHAR *username = NULL;
 444     SEC_CHAR *domain = NULL;
 445     SEC_CHAR *password = NULL;
 446
 447     TRACE("%p %p %s 0x%08x %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 448      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 449      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 450
 451     /****************************************
 452      * When communicating with the client, there can be the
 453      * following reply packets:
 454      * YR <base64 blob>         should be sent to the server
 455      * PW                       should be sent back to helper with
 456      *                          base64 encoded password
 457      * AF <base64 blob>         client is done, blob should be
 458      *                          sent to server with KK prefixed
 459      * GF <string list>         A string list of negotiated flags
 460      * GK <base64 blob>         base64 encoded session key
 461      * BH <char reason>         something broke
 462      */
 463     /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
 464
 465     if(TargetDataRep == SECURITY_NETWORK_DREP){
 466         TRACE("Setting SECURITY_NETWORK_DREP\n");
 467     }
 468
 469     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 470     bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
 471
 472     if((phContext == NULL) && (pInput == NULL))
 473     {
 474         static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
 475         static CHAR credentials_argv[] = "--use-cached-creds";
 476         SEC_CHAR *client_argv[5];
 477         int pwlen = 0;
 478
 479         TRACE("First time in ISC()\n");
 480
 481         if(!phCredential)
 482         {
 483             ret = SEC_E_INVALID_HANDLE;
 484             goto isc_end;
 485         }
 486
 487         /* As the server side of sspi never calls this, make sure that
 488          * the handler is a client handler.
 489          */
 490         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 491         if(ntlm_cred->mode != NTLM_CLIENT)
 492         {
 493             TRACE("Cred mode = %d\n", ntlm_cred->mode);
 494             ret = SEC_E_INVALID_HANDLE;
 495             goto isc_end;
 496         }
 497
 498         client_argv[0] = ntlm_auth;
 499         client_argv[1] = helper_protocol;
 500         if (!ntlm_cred->username_arg && !ntlm_cred->domain_arg)
 501         {
 502             LPWKSTA_USER_INFO_1 ui = NULL;
 503             NET_API_STATUS status;
 504             PCREDENTIALW cred;
 505
 506             if (ntlm_GetCachedCredential(pszTargetName, &cred))
 507             {
 508                 LPWSTR p;
 509                 p = strchrW(cred->UserName, '\\');
 510                 if (p)
 511                 {
 512                     domain = ntlm_GetDomainArg(cred->UserName, p - cred->UserName);
 513                     p++;
 514                 }
 515                 else
 516                 {
 517                     domain = ntlm_GetDomainArg(NULL, 0);
 518                     p = cred->UserName;
 519                 }
 520
 521                 username = ntlm_GetUsernameArg(p, -1);
 522
 523                 if(cred->CredentialBlobSize != 0)
 524                 {
 525                     pwlen = WideCharToMultiByte(CP_UNIXCP,
 526                         WC_NO_BEST_FIT_CHARS, (LPWSTR)cred->CredentialBlob,
 527                         cred->CredentialBlobSize / sizeof(WCHAR), NULL, 0,
 528                         NULL, NULL);
 529
 530                     password = HeapAlloc(GetProcessHeap(), 0, pwlen);
 531
 532                     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 533                                         (LPWSTR)cred->CredentialBlob,
 534                                         cred->CredentialBlobSize / sizeof(WCHAR),
 535                                         password, pwlen, NULL, NULL);
 536                 }
 537
 538                 CredFree(cred);
 539
 540                 client_argv[2] = username;
 541                 client_argv[3] = domain;
 542                 client_argv[4] = NULL;
 543             }
 544             else
 545             {
 546                 status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
 547                 if (status != NERR_Success || ui == NULL)
 548                 {
 549                     ret = SEC_E_NO_CREDENTIALS;
 550                     goto isc_end;
 551                 }
 552                 username = ntlm_GetUsernameArg(ui->wkui1_username, -1);
 553                 NetApiBufferFree(ui);
 554
 555                 TRACE("using cached credentials\n");
 556
 557                 client_argv[2] = username;
 558                 client_argv[3] = credentials_argv;
 559                 client_argv[4] = NULL;
 560             }
 561         }
 562         else
 563         {
 564             client_argv[2] = ntlm_cred->username_arg;
 565             client_argv[3] = ntlm_cred->domain_arg;
 566             client_argv[4] = NULL;
 567         }
 568
 569         if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
 570             goto isc_end;
 571
 572         helper->mode = NTLM_CLIENT;
 573         helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 574         if (!helper->session_key)
 575         {
 576             cleanup_helper(helper);
 577             ret = SEC_E_INSUFFICIENT_MEMORY;
 578             goto isc_end;
 579         }
 580
 581         /* Generate the dummy session key = MD4(MD4(password))*/
 582         if(password || ntlm_cred->password)
 583         {
 584             SEC_WCHAR *unicode_password;
 585             int passwd_lenW;
 586
 587             TRACE("Converting password to unicode.\n");
 588             passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 589                                               password ? password : ntlm_cred->password,
 590                                               password ? pwlen : ntlm_cred->pwlen,
 591                                               NULL, 0);
 592             unicode_password = HeapAlloc(GetProcessHeap(), 0,
 593                                          passwd_lenW * sizeof(SEC_WCHAR));
 594             MultiByteToWideChar(CP_ACP, 0, password ? password : ntlm_cred->password,
 595                                 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
 596
 597             SECUR32_CreateNTLM1SessionKey((PBYTE)unicode_password,
 598                                           passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
 599
 600             HeapFree(GetProcessHeap(), 0, unicode_password);
 601         }
 602         else
 603             memset(helper->session_key, 0, 16);
 604
 605         /* Allocate space for a maximal string of
 606          * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
 607          * NTLMSSP_FEATURE_SESSION_KEY"
 608          */
 609         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 610         if(want_flags == NULL)
 611         {
 612             cleanup_helper(helper);
 613             ret = SEC_E_INSUFFICIENT_MEMORY;
 614             goto isc_end;
 615         }
 616         lstrcpyA(want_flags, "SF");
 617         if(fContextReq & ISC_REQ_CONFIDENTIALITY)
 618         {
 619             if(strstr(want_flags, "NTLMSSP_FEATURE_SEAL") == NULL)
 620                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 621         }
 622         if(fContextReq & ISC_REQ_CONNECTION)
 623             ctxt_attr |= ISC_RET_CONNECTION;
 624         if(fContextReq & ISC_REQ_EXTENDED_ERROR)
 625             ctxt_attr |= ISC_RET_EXTENDED_ERROR;
 626         if(fContextReq & ISC_REQ_INTEGRITY)
 627         {
 628             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 629                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 630         }
 631         if(fContextReq & ISC_REQ_MUTUAL_AUTH)
 632             ctxt_attr |= ISC_RET_MUTUAL_AUTH;
 633         if(fContextReq & ISC_REQ_REPLAY_DETECT)
 634         {
 635             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 636                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 637         }
 638         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 639         {
 640             if(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                 lstrcpynA(buffer, "PW AA==", max_len-1);
 665             }
 666             else /* Just do a noop on the next run */
 667                 lstrcpynA(buffer, "OK", max_len-1);
 668         }
 669         else
 670         {
 671             lstrcpynA(buffer, "PW ", max_len-1);
 672             if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
 673                         password ? pwlen : ntlm_cred->pwlen, buffer+3,
 674                         max_len-3, &buffer_len)) != SEC_E_OK)
 675             {
 676                 cleanup_helper(helper);
 677                 goto isc_end;
 678             }
 679
 680         }
 681
 682         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 683         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 684         {
 685             cleanup_helper(helper);
 686             goto isc_end;
 687         }
 688
 689         TRACE("Helper returned %s\n", debugstr_a(buffer));
 690
 691         if(lstrlenA(want_flags) > 2)
 692         {
 693             TRACE("Want flags are %s\n", debugstr_a(want_flags));
 694             lstrcpynA(buffer, want_flags, max_len-1);
 695             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 696                     != SEC_E_OK)
 697                 goto isc_end;
 698             if(!strncmp(buffer, "BH", 2))
 699                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
 700         }
 701
 702         lstrcpynA(buffer, "YR", max_len-1);
 703
 704         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 705         {
 706             cleanup_helper(helper);
 707             goto isc_end;
 708         }
 709
 710         TRACE("%s\n", buffer);
 711
 712         if(strncmp(buffer, "YR ", 3) != 0)
 713         {
 714             /* Something borked */
 715             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 716             ret = SEC_E_INTERNAL_ERROR;
 717             cleanup_helper(helper);
 718             goto isc_end;
 719         }
 720         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 721                         max_len-1, &bin_len)) != SEC_E_OK)
 722         {
 723             cleanup_helper(helper);
 724             goto isc_end;
 725         }
 726
 727         /* put the decoded client blob into the out buffer */
 728
 729         phNewContext->dwUpper = ctxt_attr;
 730         phNewContext->dwLower = (ULONG_PTR)helper;
 731
 732         ret = SEC_I_CONTINUE_NEEDED;
 733     }
 734     else
 735     {
 736         int input_token_idx;
 737
 738         /* handle second call here */
 739         /* encode server data to base64 */
 740         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
 741         {
 742             ret = SEC_E_INVALID_TOKEN;
 743             goto isc_end;
 744         }
 745
 746         if(!phContext)
 747         {
 748             ret = SEC_E_INVALID_HANDLE;
 749             goto isc_end;
 750         }
 751
 752         /* As the server side of sspi never calls this, make sure that
 753          * the handler is a client handler.
 754          */
 755         helper = (PNegoHelper)phContext->dwLower;
 756         if(helper->mode != NTLM_CLIENT)
 757         {
 758             TRACE("Helper mode = %d\n", helper->mode);
 759             ret = SEC_E_INVALID_HANDLE;
 760             goto isc_end;
 761         }
 762
 763         if (!pInput->pBuffers[input_token_idx].pvBuffer)
 764         {
 765             ret = SEC_E_INTERNAL_ERROR;
 766             goto isc_end;
 767         }
 768
 769         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
 770         {
 771             TRACE("pInput->pBuffers[%d].cbBuffer is: %d\n",
 772                     input_token_idx,
 773                     pInput->pBuffers[input_token_idx].cbBuffer);
 774             ret = SEC_E_INVALID_TOKEN;
 775             goto isc_end;
 776         }
 777         else
 778             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
 779
 780         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
 781
 782         lstrcpynA(buffer, "TT ", max_len-1);
 783
 784         if((ret = encodeBase64(bin, bin_len, buffer+3,
 785                         max_len-3, &buffer_len)) != SEC_E_OK)
 786             goto isc_end;
 787
 788         TRACE("Server sent: %s\n", debugstr_a(buffer));
 789
 790         /* send TT base64 blob to ntlm_auth */
 791         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 792             goto isc_end;
 793
 794         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 795
 796         if( (strncmp(buffer, "KK ", 3) != 0) &&
 797                 (strncmp(buffer, "AF ", 3) !=0))
 798         {
 799             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 800             ret = SEC_E_INVALID_TOKEN;
 801             goto isc_end;
 802         }
 803
 804         /* decode the blob and send it to server */
 805         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 806                         &bin_len)) != SEC_E_OK)
 807         {
 808             goto isc_end;
 809         }
 810
 811         phNewContext->dwUpper = ctxt_attr;
 812         phNewContext->dwLower = (ULONG_PTR)helper;
 813
 814         ret = SEC_E_OK;
 815     }
 816
 817     /* put the decoded client blob into the out buffer */
 818
 819     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
 820     {
 821         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
 822         ret = SEC_E_BUFFER_TOO_SMALL;
 823         if ((phContext == NULL) && (pInput == NULL))
 824         {
 825             HeapFree(GetProcessHeap(), 0, helper->session_key);
 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             HeapFree(GetProcessHeap(), 0, helper->session_key);
 845             cleanup_helper(helper);
 846             phNewContext->dwUpper = 0;
 847             phNewContext->dwLower = 0;
 848         }
 849         goto isc_end;
 850     }
 851
 852     if (!pOutput->pBuffers[token_idx].pvBuffer)
 853     {
 854         TRACE("out buffer is NULL\n");
 855         ret = SEC_E_INTERNAL_ERROR;
 856         if ((phContext == NULL) && (pInput == NULL))
 857         {
 858             HeapFree(GetProcessHeap(), 0, helper->session_key);
 859             cleanup_helper(helper);
 860             phNewContext->dwUpper = 0;
 861             phNewContext->dwLower = 0;
 862         }
 863         goto isc_end;
 864     }
 865
 866     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 867     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
 868
 869     if(ret == SEC_E_OK)
 870     {
 871         TRACE("Getting negotiated flags\n");
 872         lstrcpynA(buffer, "GF", max_len - 1);
 873         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 874             goto isc_end;
 875
 876         if(buffer_len < 3)
 877         {
 878             TRACE("No flags negotiated.\n");
 879             helper->neg_flags = 0l;
 880         }
 881         else
 882         {
 883             TRACE("Negotiated %s\n", debugstr_a(buffer));
 884             sscanf(buffer + 3, "%x", &(helper->neg_flags));
 885             TRACE("Stored 0x%08x as flags\n", helper->neg_flags);
 886         }
 887
 888         TRACE("Getting session key\n");
 889         lstrcpynA(buffer, "GK", max_len - 1);
 890         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 891             goto isc_end;
 892
 893         if(strncmp(buffer, "BH", 2) == 0)
 894             TRACE("No key negotiated.\n");
 895         else if(strncmp(buffer, "GK ", 3) == 0)
 896         {
 897             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 898                             &bin_len)) != SEC_E_OK)
 899             {
 900                 TRACE("Failed to decode session key\n");
 901             }
 902             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 903             HeapFree(GetProcessHeap(), 0, helper->session_key);
 904             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 905             if(!helper->session_key)
 906             {
 907                 TRACE("Failed to allocate memory for session key\n");
 908                 ret = SEC_E_INTERNAL_ERROR;
 909                 goto isc_end;
 910             }
 911             memcpy(helper->session_key, bin, bin_len);
 912         }
 913
 914         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 915         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 916         helper->crypt.ntlm.seq_num = 0l;
 917         SECUR32_CreateNTLM2SubKeys(helper);
 918         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
 919         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
 920         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
 921                          helper->crypt.ntlm2.send_seal_key, 16);
 922         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
 923                          helper->crypt.ntlm2.recv_seal_key, 16);
 924         helper->crypt.ntlm2.send_seq_no = 0l;
 925         helper->crypt.ntlm2.recv_seq_no = 0l;
 926     }
 927
 928 isc_end:
 929     HeapFree(GetProcessHeap(), 0, username);
 930     HeapFree(GetProcessHeap(), 0, domain);
 931     HeapFree(GetProcessHeap(), 0, password);
 932     HeapFree(GetProcessHeap(), 0, want_flags);
 933     HeapFree(GetProcessHeap(), 0, buffer);
 934     HeapFree(GetProcessHeap(), 0, bin);
 935     return ret;
 936 }
 937
 938 /***********************************************************************
 939  *              InitializeSecurityContextA
 940  */
 941 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 942  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 943  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 944  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 945  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 946 {
 947     SECURITY_STATUS ret;
 948     SEC_WCHAR *target = NULL;
 949
 950     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 951      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 952      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 953
 954     if(pszTargetName != NULL)
 955     {
 956         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 957             strlen(pszTargetName)+1, NULL, 0);
 958         target = HeapAlloc(GetProcessHeap(), 0, target_size *
 959                 sizeof(SEC_WCHAR));
 960         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 961             target, target_size);
 962     }
 963
 964     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 965             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 966             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 967
 968     HeapFree(GetProcessHeap(), 0, target);
 969     return ret;
 970 }
 971
 972 /***********************************************************************
 973  *              AcceptSecurityContext
 974  */
 975 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 976  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 977  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 978  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 979 {
 980     SECURITY_STATUS ret;
 981     char *buffer, *want_flags = NULL;
 982     PBYTE bin;
 983     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 984     ULONG ctxt_attr = 0;
 985     PNegoHelper helper;
 986     PNtlmCredentials ntlm_cred;
 987
 988     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 989      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 990      ptsExpiry);
 991
 992     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 993     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 994
 995     if(TargetDataRep == SECURITY_NETWORK_DREP){
 996         TRACE("Using SECURITY_NETWORK_DREP\n");
 997     }
 998
 999     if(phContext == NULL)
1000     {
1001         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
1002         SEC_CHAR *server_argv[] = { ntlm_auth,
1003             server_helper_protocol,
1004             NULL };
1005
1006         if (!phCredential)
1007         {
1008             ret = SEC_E_INVALID_HANDLE;
1009             goto asc_end;
1010         }
1011
1012         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1013
1014         if(ntlm_cred->mode != NTLM_SERVER)
1015         {
1016             ret = SEC_E_INVALID_HANDLE;
1017             goto asc_end;
1018         }
1019
1020         /* This is the first call to AcceptSecurityHandle */
1021         if(pInput == NULL)
1022         {
1023             ret = SEC_E_INCOMPLETE_MESSAGE;
1024             goto asc_end;
1025         }
1026
1027         if(pInput->cBuffers < 1)
1028         {
1029             ret = SEC_E_INCOMPLETE_MESSAGE;
1030             goto asc_end;
1031         }
1032
1033         if(pInput->pBuffers[0].cbBuffer > max_len)
1034         {
1035             ret = SEC_E_INVALID_TOKEN;
1036             goto asc_end;
1037         }
1038         else
1039             bin_len = pInput->pBuffers[0].cbBuffer;
1040
1041         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1042             SEC_E_OK)
1043         {
1044             ret = SEC_E_INTERNAL_ERROR;
1045             goto asc_end;
1046         }
1047         helper->mode = NTLM_SERVER;
1048
1049         /* Handle all the flags */
1050         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1051         if(want_flags == NULL)
1052         {
1053             TRACE("Failed to allocate memory for the want_flags!\n");
1054             ret = SEC_E_INSUFFICIENT_MEMORY;
1055             cleanup_helper(helper);
1056             goto asc_end;
1057         }
1058         lstrcpyA(want_flags, "SF");
1059         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1060         {
1061             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1062         }
1063         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1064         {
1065             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1066         }
1067         if(fContextReq & ASC_REQ_CONNECTION)
1068         {
1069             /* This is default, so we'll enable it */
1070             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1071             ctxt_attr |= ASC_RET_CONNECTION;
1072         }
1073         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1074         {
1075             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1076         }
1077         if(fContextReq & ASC_REQ_INTEGRITY)
1078         {
1079             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1080         }
1081         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1082         {
1083             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1084         }
1085         if(fContextReq & ASC_REQ_REPLAY_DETECT)
1086         {
1087             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1088         }
1089         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1090         {
1091             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1092         }
1093         if(fContextReq & ISC_REQ_STREAM)
1094         {
1095             FIXME("ASC_REQ_STREAM stub\n");
1096         }
1097         /* Done with the flags */
1098
1099         if(lstrlenA(want_flags) > 3)
1100         {
1101             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1102             lstrcpynA(buffer, want_flags, max_len - 1);
1103             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1104                     SEC_E_OK)
1105             {
1106                 cleanup_helper(helper);
1107                 goto asc_end;
1108             }
1109             if(!strncmp(buffer, "BH", 2))
1110                 TRACE("Helper doesn't understand new command set\n");
1111         }
1112
1113         /* This is the YR request from the client, encode to base64 */
1114
1115         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1116
1117         lstrcpynA(buffer, "YR ", max_len-1);
1118
1119         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1120                     &buffer_len)) != SEC_E_OK)
1121         {
1122             cleanup_helper(helper);
1123             goto asc_end;
1124         }
1125
1126         TRACE("Client sent: %s\n", debugstr_a(buffer));
1127
1128         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1129                     SEC_E_OK)
1130         {
1131             cleanup_helper(helper);
1132             goto asc_end;
1133         }
1134
1135         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1136         /* The expected answer is TT <base64 blob> */
1137
1138         if(strncmp(buffer, "TT ", 3) != 0)
1139         {
1140             ret = SEC_E_INTERNAL_ERROR;
1141             cleanup_helper(helper);
1142             goto asc_end;
1143         }
1144
1145         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1146                         &bin_len)) != SEC_E_OK)
1147         {
1148             cleanup_helper(helper);
1149             goto asc_end;
1150         }
1151
1152         /* send this to the client */
1153         if(pOutput == NULL)
1154         {
1155             ret = SEC_E_INSUFFICIENT_MEMORY;
1156             cleanup_helper(helper);
1157             goto asc_end;
1158         }
1159
1160         if(pOutput->cBuffers < 1)
1161         {
1162             ret = SEC_E_INSUFFICIENT_MEMORY;
1163             cleanup_helper(helper);
1164             goto asc_end;
1165         }
1166
1167         pOutput->pBuffers[0].cbBuffer = bin_len;
1168         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1169         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1170         ret = SEC_I_CONTINUE_NEEDED;
1171
1172     }
1173     else
1174     {
1175         /* we expect a KK request from client */
1176         if(pInput == NULL)
1177         {
1178             ret = SEC_E_INCOMPLETE_MESSAGE;
1179             goto asc_end;
1180         }
1181
1182         if(pInput->cBuffers < 1)
1183         {
1184             ret = SEC_E_INCOMPLETE_MESSAGE;
1185             goto asc_end;
1186         }
1187
1188         if(!phContext)
1189         {
1190             ret = SEC_E_INVALID_HANDLE;
1191             goto asc_end;
1192         }
1193
1194         helper = (PNegoHelper)phContext->dwLower;
1195
1196         if(helper->mode != NTLM_SERVER)
1197         {
1198             ret = SEC_E_INVALID_HANDLE;
1199             goto asc_end;
1200         }
1201
1202         if(pInput->pBuffers[0].cbBuffer > max_len)
1203         {
1204             ret = SEC_E_INVALID_TOKEN;
1205             goto asc_end;
1206         }
1207         else
1208             bin_len = pInput->pBuffers[0].cbBuffer;
1209
1210         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1211
1212         lstrcpynA(buffer, "KK ", max_len-1);
1213
1214         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1215                     &buffer_len)) != SEC_E_OK)
1216         {
1217             goto asc_end;
1218         }
1219
1220         TRACE("Client sent: %s\n", debugstr_a(buffer));
1221
1222         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1223                     SEC_E_OK)
1224         {
1225             goto asc_end;
1226         }
1227
1228         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1229
1230         /* At this point, we get a NA if the user didn't authenticate, but a BH
1231          * if ntlm_auth could not connect to winbindd. Apart from running Wine
1232          * as root, there is no way to fix this for now, so just handle this as
1233          * a failed login. */
1234         if(strncmp(buffer, "AF ", 3) != 0)
1235         {
1236             if(strncmp(buffer, "NA ", 3) == 0)
1237             {
1238                 ret = SEC_E_LOGON_DENIED;
1239                 goto asc_end;
1240             }
1241             else
1242             {
1243                 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1244
1245                 if( (buffer_len >= ntlm_pipe_err_len) &&
1246                     (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1247                              ntlm_pipe_err_len) == 0))
1248                 {
1249                     TRACE("Connection to winbindd failed\n");
1250                     ret = SEC_E_LOGON_DENIED;
1251                 }
1252                 else
1253                     ret = SEC_E_INTERNAL_ERROR;
1254
1255                 goto asc_end;
1256             }
1257         }
1258         pOutput->pBuffers[0].cbBuffer = 0;
1259
1260         TRACE("Getting negotiated flags\n");
1261         lstrcpynA(buffer, "GF", max_len - 1);
1262         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1263             goto asc_end;
1264
1265         if(buffer_len < 3)
1266         {
1267             TRACE("No flags negotiated, or helper does not support GF command\n");
1268         }
1269         else
1270         {
1271             TRACE("Negotiated %s\n", debugstr_a(buffer));
1272             sscanf(buffer + 3, "%x", &(helper->neg_flags));
1273             TRACE("Stored 0x%08x as flags\n", helper->neg_flags);
1274         }
1275
1276         TRACE("Getting session key\n");
1277         lstrcpynA(buffer, "GK", max_len - 1);
1278         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
1279             goto asc_end;
1280
1281         if(buffer_len < 3)
1282             TRACE("Helper does not support GK command\n");
1283         else
1284         {
1285             if(strncmp(buffer, "BH ", 3) == 0)
1286             {
1287                 TRACE("Helper sent %s\n", debugstr_a(buffer+3));
1288                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1289                 /*FIXME: Generate the dummy session key = MD4(MD4(password))*/
1290                 memset(helper->session_key, 0 , 16);
1291             }
1292             else if(strncmp(buffer, "GK ", 3) == 0)
1293             {
1294                 if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1295                                 &bin_len)) != SEC_E_OK)
1296                 {
1297                     TRACE("Failed to decode session key\n");
1298                 }
1299                 TRACE("Session key is %s\n", debugstr_a(buffer+3));
1300                 helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
1301                 if(!helper->session_key)
1302                 {
1303                     TRACE("Failed to allocate memory for session key\n");
1304                     ret = SEC_E_INTERNAL_ERROR;
1305                     goto asc_end;
1306                 }
1307                 memcpy(helper->session_key, bin, 16);
1308             }
1309         }
1310         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
1311         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
1312         helper->crypt.ntlm.seq_num = 0l;
1313     }
1314
1315     phNewContext->dwUpper = ctxt_attr;
1316     phNewContext->dwLower = (ULONG_PTR)helper;
1317
1318 asc_end:
1319     HeapFree(GetProcessHeap(), 0, want_flags);
1320     HeapFree(GetProcessHeap(), 0, buffer);
1321     HeapFree(GetProcessHeap(), 0, bin);
1322     return ret;
1323 }
1324
1325 /***********************************************************************
1326  *              CompleteAuthToken
1327  */
1328 static SECURITY_STATUS SEC_ENTRY ntlm_CompleteAuthToken(PCtxtHandle phContext,
1329  PSecBufferDesc pToken)
1330 {
1331     /* We never need to call CompleteAuthToken anyway */
1332     TRACE("%p %p\n", phContext, pToken);
1333     if (!phContext)
1334         return SEC_E_INVALID_HANDLE;
1335
1336     return SEC_E_OK;
1337 }
1338
1339 /***********************************************************************
1340  *              DeleteSecurityContext
1341  */
1342 static SECURITY_STATUS SEC_ENTRY ntlm_DeleteSecurityContext(PCtxtHandle phContext)
1343 {
1344     PNegoHelper helper;
1345
1346     TRACE("%p\n", phContext);
1347     if (!phContext)
1348         return SEC_E_INVALID_HANDLE;
1349
1350     helper = (PNegoHelper)phContext->dwLower;
1351
1352     phContext->dwUpper = 0;
1353     phContext->dwLower = 0;
1354
1355     SECUR32_arc4Cleanup(helper->crypt.ntlm.a4i);
1356     HeapFree(GetProcessHeap(), 0, helper->session_key);
1357     SECUR32_arc4Cleanup(helper->crypt.ntlm2.send_a4i);
1358     SECUR32_arc4Cleanup(helper->crypt.ntlm2.recv_a4i);
1359     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_sign_key);
1360     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.send_seal_key);
1361     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_sign_key);
1362     HeapFree(GetProcessHeap(), 0, helper->crypt.ntlm2.recv_seal_key);
1363
1364     cleanup_helper(helper);
1365
1366     return SEC_E_OK;
1367 }
1368
1369 /***********************************************************************
1370  *              QueryContextAttributesW
1371  */
1372 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesW(PCtxtHandle phContext,
1373  ULONG ulAttribute, void *pBuffer)
1374 {
1375     TRACE("%p %d %p\n", phContext, ulAttribute, pBuffer);
1376     if (!phContext)
1377         return SEC_E_INVALID_HANDLE;
1378
1379     switch(ulAttribute)
1380     {
1381 #define _x(x) case (x) : FIXME(#x" stub\n"); break
1382         _x(SECPKG_ATTR_ACCESS_TOKEN);
1383         _x(SECPKG_ATTR_AUTHORITY);
1384         _x(SECPKG_ATTR_DCE_INFO);
1385         case SECPKG_ATTR_FLAGS:
1386         {
1387             PSecPkgContext_Flags spcf = (PSecPkgContext_Flags)pBuffer;
1388             PNegoHelper helper = (PNegoHelper)phContext->dwLower;
1389
1390             spcf->Flags = 0;
1391             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1392                 spcf->Flags |= ISC_RET_INTEGRITY;
1393             if(helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1394                 spcf->Flags |= ISC_RET_CONFIDENTIALITY;
1395             return SEC_E_OK;
1396         }
1397         _x(SECPKG_ATTR_KEY_INFO);
1398         _x(SECPKG_ATTR_LIFESPAN);
1399         _x(SECPKG_ATTR_NAMES);
1400         _x(SECPKG_ATTR_NATIVE_NAMES);
1401         _x(SECPKG_ATTR_NEGOTIATION_INFO);
1402         _x(SECPKG_ATTR_PACKAGE_INFO);
1403         _x(SECPKG_ATTR_PASSWORD_EXPIRY);
1404         _x(SECPKG_ATTR_SESSION_KEY);
1405         case SECPKG_ATTR_SIZES:
1406         {
1407             PSecPkgContext_Sizes spcs = (PSecPkgContext_Sizes)pBuffer;
1408             spcs->cbMaxToken = NTLM_MAX_BUF;
1409             spcs->cbMaxSignature = 16;
1410             spcs->cbBlockSize = 0;
1411             spcs->cbSecurityTrailer = 16;
1412             return SEC_E_OK;
1413         }
1414         _x(SECPKG_ATTR_STREAM_SIZES);
1415         _x(SECPKG_ATTR_TARGET_INFORMATION);
1416 #undef _x
1417         default:
1418             TRACE("Unknown value %d passed for ulAttribute\n", ulAttribute);
1419     }
1420
1421     return SEC_E_UNSUPPORTED_FUNCTION;
1422 }
1423
1424 /***********************************************************************
1425  *              QueryContextAttributesA
1426  */
1427 static SECURITY_STATUS SEC_ENTRY ntlm_QueryContextAttributesA(PCtxtHandle phContext,
1428  ULONG ulAttribute, void *pBuffer)
1429 {
1430     return ntlm_QueryContextAttributesW(phContext, ulAttribute, pBuffer);
1431 }
1432
1433 /***********************************************************************
1434  *              ImpersonateSecurityContext
1435  */
1436 static SECURITY_STATUS SEC_ENTRY ntlm_ImpersonateSecurityContext(PCtxtHandle phContext)
1437 {
1438     SECURITY_STATUS ret;
1439
1440     TRACE("%p\n", phContext);
1441     if (phContext)
1442     {
1443         ret = SEC_E_UNSUPPORTED_FUNCTION;
1444     }
1445     else
1446     {
1447         ret = SEC_E_INVALID_HANDLE;
1448     }
1449     return ret;
1450 }
1451
1452 /***********************************************************************
1453  *              RevertSecurityContext
1454  */
1455 static SECURITY_STATUS SEC_ENTRY ntlm_RevertSecurityContext(PCtxtHandle phContext)
1456 {
1457     SECURITY_STATUS ret;
1458
1459     TRACE("%p\n", phContext);
1460     if (phContext)
1461     {
1462         ret = SEC_E_UNSUPPORTED_FUNCTION;
1463     }
1464     else
1465     {
1466         ret = SEC_E_INVALID_HANDLE;
1467     }
1468     return ret;
1469 }
1470
1471 /***********************************************************************
1472  *             ntlm_CreateSignature
1473  * As both MakeSignature and VerifySignature need this, but different keys
1474  * are needed for NTLM2, the logic goes into a helper function.
1475  * To ensure maximal reusability, we can specify the direction as NTLM_SEND for
1476  * signing/encrypting and NTLM_RECV for verfying/decrypting. When encrypting,
1477  * the signature is encrypted after the message was encrypted, so
1478  * CreateSignature shouldn't do it. In this case, encrypt_sig can be set to
1479  * false.
1480  */
1481 static SECURITY_STATUS ntlm_CreateSignature(PNegoHelper helper, PSecBufferDesc pMessage,
1482         int token_idx, SignDirection direction, BOOL encrypt_sig)
1483 {
1484     ULONG sign_version = 1;
1485     UINT i;
1486     PBYTE sig;
1487     TRACE("%p, %p, %d, %d, %d\n", helper, pMessage, token_idx, direction,
1488             encrypt_sig);
1489
1490     sig = pMessage->pBuffers[token_idx].pvBuffer;
1491
1492     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1493             helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1494     {
1495         BYTE digest[16];
1496         BYTE seq_no[4];
1497         HMAC_MD5_CTX hmac_md5_ctx;
1498
1499         TRACE("Signing NTLM2 style\n");
1500
1501         if(direction == NTLM_SEND)
1502         {
1503             seq_no[0] = (helper->crypt.ntlm2.send_seq_no >>  0) & 0xff;
1504             seq_no[1] = (helper->crypt.ntlm2.send_seq_no >>  8) & 0xff;
1505             seq_no[2] = (helper->crypt.ntlm2.send_seq_no >> 16) & 0xff;
1506             seq_no[3] = (helper->crypt.ntlm2.send_seq_no >> 24) & 0xff;
1507
1508             ++(helper->crypt.ntlm2.send_seq_no);
1509
1510             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.send_sign_key, 16);
1511         }
1512         else
1513         {
1514             seq_no[0] = (helper->crypt.ntlm2.recv_seq_no >>  0) & 0xff;
1515             seq_no[1] = (helper->crypt.ntlm2.recv_seq_no >>  8) & 0xff;
1516             seq_no[2] = (helper->crypt.ntlm2.recv_seq_no >> 16) & 0xff;
1517             seq_no[3] = (helper->crypt.ntlm2.recv_seq_no >> 24) & 0xff;
1518
1519             ++(helper->crypt.ntlm2.recv_seq_no);
1520
1521             HMACMD5Init(&hmac_md5_ctx, helper->crypt.ntlm2.recv_sign_key, 16);
1522         }
1523
1524         HMACMD5Update(&hmac_md5_ctx, seq_no, 4);
1525         for( i = 0; i < pMessage->cBuffers; ++i )
1526         {
1527             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1528                 HMACMD5Update(&hmac_md5_ctx, pMessage->pBuffers[i].pvBuffer,
1529                         pMessage->pBuffers[i].cbBuffer);
1530         }
1531
1532         HMACMD5Final(&hmac_md5_ctx, digest);
1533
1534         if(encrypt_sig && helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1535         {
1536             if(direction == NTLM_SEND)
1537                 SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i, digest, 8);
1538             else
1539                 SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i, digest, 8);
1540         }
1541
1542         /* The NTLM2 signature is the sign version */
1543         sig[ 0] = (sign_version >>  0) & 0xff;
1544         sig[ 1] = (sign_version >>  8) & 0xff;
1545         sig[ 2] = (sign_version >> 16) & 0xff;
1546         sig[ 3] = (sign_version >> 24) & 0xff;
1547         /* The first 8 bytes of the digest */
1548         memcpy(sig+4, digest, 8);
1549         /* And the sequence number */
1550         memcpy(sig+12, seq_no, 4);
1551
1552         pMessage->pBuffers[token_idx].cbBuffer = 16;
1553
1554         return SEC_E_OK;
1555     }
1556     if(helper->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
1557     {
1558         ULONG crc = 0U;
1559         TRACE("Signing NTLM1 style\n");
1560
1561         for(i=0; i < pMessage->cBuffers; ++i)
1562         {
1563             if(pMessage->pBuffers[i].BufferType & SECBUFFER_DATA)
1564             {
1565                 crc = ComputeCrc32(pMessage->pBuffers[i].pvBuffer,
1566                     pMessage->pBuffers[i].cbBuffer, crc);
1567             }
1568         }
1569
1570         sig[ 0] = (sign_version >>  0) & 0xff;
1571         sig[ 1] = (sign_version >>  8) & 0xff;
1572         sig[ 2] = (sign_version >> 16) & 0xff;
1573         sig[ 3] = (sign_version >> 24) & 0xff;
1574         memset(sig+4, 0, 4);
1575         sig[ 8] = (crc >>  0) & 0xff;
1576         sig[ 9] = (crc >>  8) & 0xff;
1577         sig[10] = (crc >> 16) & 0xff;
1578         sig[11] = (crc >> 24) & 0xff;
1579         sig[12] = (helper->crypt.ntlm.seq_num >>  0) & 0xff;
1580         sig[13] = (helper->crypt.ntlm.seq_num >>  8) & 0xff;
1581         sig[14] = (helper->crypt.ntlm.seq_num >> 16) & 0xff;
1582         sig[15] = (helper->crypt.ntlm.seq_num >> 24) & 0xff;
1583
1584         ++(helper->crypt.ntlm.seq_num);
1585
1586         if(encrypt_sig)
1587             SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1588         return SEC_E_OK;
1589     }
1590
1591     if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1592     {
1593         TRACE("Creating a dummy signature.\n");
1594         /* A dummy signature is 0x01 followed by 15 bytes of 0x00 */
1595         memset(pMessage->pBuffers[token_idx].pvBuffer, 0, 16);
1596         memset(pMessage->pBuffers[token_idx].pvBuffer, 0x01, 1);
1597         pMessage->pBuffers[token_idx].cbBuffer = 16;
1598         return SEC_E_OK;
1599     }
1600
1601     return SEC_E_UNSUPPORTED_FUNCTION;
1602 }
1603
1604 /***********************************************************************
1605  *              MakeSignature
1606  */
1607 static SECURITY_STATUS SEC_ENTRY ntlm_MakeSignature(PCtxtHandle phContext, ULONG fQOP,
1608  PSecBufferDesc pMessage, ULONG MessageSeqNo)
1609 {
1610     PNegoHelper helper;
1611     int token_idx;
1612
1613     TRACE("%p %d %p %d\n", phContext, fQOP, pMessage, MessageSeqNo);
1614     if (!phContext)
1615         return SEC_E_INVALID_HANDLE;
1616
1617     if(fQOP)
1618         FIXME("Ignoring fQOP 0x%08x\n", fQOP);
1619
1620     if(MessageSeqNo)
1621         FIXME("Ignoring MessageSeqNo\n");
1622
1623     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1624         return SEC_E_INVALID_TOKEN;
1625
1626     /* If we didn't find a SECBUFFER_TOKEN type buffer */
1627     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1628         return SEC_E_INVALID_TOKEN;
1629
1630     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1631         return SEC_E_BUFFER_TOO_SMALL;
1632
1633     helper = (PNegoHelper)phContext->dwLower;
1634     TRACE("Negotiated flags are: 0x%08x\n", helper->neg_flags);
1635
1636     return ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, TRUE);
1637 }
1638
1639 /***********************************************************************
1640  *              VerifySignature
1641  */
1642 static SECURITY_STATUS SEC_ENTRY ntlm_VerifySignature(PCtxtHandle phContext,
1643  PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1644 {
1645     PNegoHelper helper;
1646     ULONG fQOP = 0;
1647     UINT i;
1648     int token_idx;
1649     SECURITY_STATUS ret;
1650     SecBufferDesc local_desc;
1651     PSecBuffer     local_buff;
1652     BYTE          local_sig[16];
1653
1654     TRACE("%p %p %d %p\n", phContext, pMessage, MessageSeqNo, pfQOP);
1655     if(!phContext)
1656         return SEC_E_INVALID_HANDLE;
1657
1658     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1659         return SEC_E_INVALID_TOKEN;
1660
1661     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1662         return SEC_E_INVALID_TOKEN;
1663
1664     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1665         return SEC_E_BUFFER_TOO_SMALL;
1666
1667     if(MessageSeqNo)
1668         FIXME("Ignoring MessageSeqNo\n");
1669
1670     helper = (PNegoHelper)phContext->dwLower;
1671     TRACE("Negotiated flags: 0x%08x\n", helper->neg_flags);
1672
1673     local_buff = HeapAlloc(GetProcessHeap(), 0, pMessage->cBuffers * sizeof(SecBuffer));
1674
1675     local_desc.ulVersion = SECBUFFER_VERSION;
1676     local_desc.cBuffers = pMessage->cBuffers;
1677     local_desc.pBuffers = local_buff;
1678
1679     for(i=0; i < pMessage->cBuffers; ++i)
1680     {
1681         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
1682         {
1683             local_buff[i].BufferType = SECBUFFER_TOKEN;
1684             local_buff[i].cbBuffer = 16;
1685             local_buff[i].pvBuffer = local_sig;
1686         }
1687         else
1688         {
1689             local_buff[i].BufferType = pMessage->pBuffers[i].BufferType;
1690             local_buff[i].cbBuffer = pMessage->pBuffers[i].cbBuffer;
1691             local_buff[i].pvBuffer = pMessage->pBuffers[i].pvBuffer;
1692         }
1693     }
1694
1695     if((ret = ntlm_CreateSignature(helper, &local_desc, token_idx, NTLM_RECV, TRUE)) != SEC_E_OK)
1696         return ret;
1697
1698     if(memcmp(((PBYTE)local_buff[token_idx].pvBuffer) + 8,
1699                 ((PBYTE)pMessage->pBuffers[token_idx].pvBuffer) + 8, 8))
1700         ret = SEC_E_MESSAGE_ALTERED;
1701     else
1702         ret = SEC_E_OK;
1703
1704     HeapFree(GetProcessHeap(), 0, local_buff);
1705     pfQOP = &fQOP;
1706
1707     return ret;
1708
1709 }
1710
1711 /***********************************************************************
1712  *             FreeCredentialsHandle
1713  */
1714 static SECURITY_STATUS SEC_ENTRY ntlm_FreeCredentialsHandle(
1715         PCredHandle phCredential)
1716 {
1717     SECURITY_STATUS ret;
1718
1719     if(phCredential){
1720         PNtlmCredentials ntlm_cred = (PNtlmCredentials) phCredential->dwLower;
1721         phCredential->dwUpper = 0;
1722         phCredential->dwLower = 0;
1723         if (ntlm_cred->password)
1724             memset(ntlm_cred->password, 0, ntlm_cred->pwlen);
1725         HeapFree(GetProcessHeap(), 0, ntlm_cred->password);
1726         HeapFree(GetProcessHeap(), 0, ntlm_cred->username_arg);
1727         HeapFree(GetProcessHeap(), 0, ntlm_cred->domain_arg);
1728         HeapFree(GetProcessHeap(), 0, ntlm_cred);
1729         ret = SEC_E_OK;
1730     }
1731     else
1732         ret = SEC_E_OK;
1733
1734     return ret;
1735 }
1736
1737 /***********************************************************************
1738  *             EncryptMessage
1739  */
1740 static SECURITY_STATUS SEC_ENTRY ntlm_EncryptMessage(PCtxtHandle phContext,
1741         ULONG fQOP, PSecBufferDesc pMessage, ULONG MessageSeqNo)
1742 {
1743     PNegoHelper helper;
1744     int token_idx, data_idx;
1745
1746     TRACE("(%p %d %p %d)\n", phContext, fQOP, pMessage, MessageSeqNo);
1747
1748     if(!phContext)
1749         return SEC_E_INVALID_HANDLE;
1750
1751     if(fQOP)
1752         FIXME("Ignoring fQOP\n");
1753
1754     if(MessageSeqNo)
1755         FIXME("Ignoring MessageSeqNo\n");
1756
1757     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1758         return SEC_E_INVALID_TOKEN;
1759
1760     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1761         return SEC_E_INVALID_TOKEN;
1762
1763     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1 )
1764         return SEC_E_INVALID_TOKEN;
1765
1766     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1767         return SEC_E_BUFFER_TOO_SMALL;
1768
1769     helper = (PNegoHelper) phContext->dwLower;
1770
1771     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 &&
1772             helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1773     {
1774         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1775         SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1776                 pMessage->pBuffers[data_idx].pvBuffer,
1777                 pMessage->pBuffers[data_idx].cbBuffer);
1778
1779         if(helper->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCHANGE)
1780             SECUR32_arc4Process(helper->crypt.ntlm2.send_a4i,
1781                     ((BYTE *)pMessage->pBuffers[token_idx].pvBuffer)+4, 8);
1782
1783
1784         return SEC_E_OK;
1785     }
1786     else
1787     {
1788         PBYTE sig;
1789         ULONG save_flags;
1790
1791         /* EncryptMessage always produces real signatures, so make sure
1792          * NTLMSSP_NEGOTIATE_SIGN is set*/
1793         save_flags = helper->neg_flags;
1794         helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1795         ntlm_CreateSignature(helper, pMessage, token_idx, NTLM_SEND, FALSE);
1796         helper->neg_flags = save_flags;
1797
1798         sig = pMessage->pBuffers[token_idx].pvBuffer;
1799
1800         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1801                 pMessage->pBuffers[data_idx].pvBuffer,
1802                 pMessage->pBuffers[data_idx].cbBuffer);
1803         SECUR32_arc4Process(helper->crypt.ntlm.a4i, sig+4, 12);
1804
1805         if(helper->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN || helper->neg_flags == 0)
1806             memset(sig+4, 0, 4);
1807
1808     }
1809
1810     return SEC_E_OK;
1811 }
1812
1813 /***********************************************************************
1814  *             DecryptMessage
1815  */
1816 static SECURITY_STATUS SEC_ENTRY ntlm_DecryptMessage(PCtxtHandle phContext,
1817         PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP)
1818 {
1819     SECURITY_STATUS ret;
1820     ULONG ntlmssp_flags_save;
1821     PNegoHelper helper;
1822     int token_idx, data_idx;
1823     TRACE("(%p %p %d %p)\n", phContext, pMessage, MessageSeqNo, pfQOP);
1824
1825     if(!phContext)
1826         return SEC_E_INVALID_HANDLE;
1827
1828     if(MessageSeqNo)
1829         FIXME("Ignoring MessageSeqNo\n");
1830
1831     if(!pMessage || !pMessage->pBuffers || pMessage->cBuffers < 2)
1832         return SEC_E_INVALID_TOKEN;
1833
1834     if((token_idx = ntlm_GetTokenBufferIndex(pMessage)) == -1)
1835         return SEC_E_INVALID_TOKEN;
1836
1837     if((data_idx = ntlm_GetDataBufferIndex(pMessage)) ==-1)
1838         return SEC_E_INVALID_TOKEN;
1839
1840     if(pMessage->pBuffers[token_idx].cbBuffer < 16)
1841         return SEC_E_BUFFER_TOO_SMALL;
1842
1843     helper = (PNegoHelper) phContext->dwLower;
1844
1845     if(helper->neg_flags & NTLMSSP_NEGOTIATE_NTLM2 && helper->neg_flags & NTLMSSP_NEGOTIATE_SEAL)
1846     {
1847         SECUR32_arc4Process(helper->crypt.ntlm2.recv_a4i,
1848                 pMessage->pBuffers[data_idx].pvBuffer,
1849                 pMessage->pBuffers[data_idx].cbBuffer);
1850     }
1851     else
1852     {
1853         SECUR32_arc4Process(helper->crypt.ntlm.a4i,
1854                 pMessage->pBuffers[data_idx].pvBuffer,
1855                 pMessage->pBuffers[data_idx].cbBuffer);
1856     }
1857
1858     /* Make sure we use a session key for the signature check, EncryptMessage
1859      * always does that, even in the dummy case */
1860     ntlmssp_flags_save = helper->neg_flags;
1861
1862     helper->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
1863     ret = ntlm_VerifySignature(phContext, pMessage, MessageSeqNo, pfQOP);
1864
1865     helper->neg_flags = ntlmssp_flags_save;
1866
1867     return ret;
1868 }
1869
1870 static const SecurityFunctionTableA ntlmTableA = {
1871     1,
1872     NULL,   /* EnumerateSecurityPackagesA */
1873     ntlm_QueryCredentialsAttributesA,   /* QueryCredentialsAttributesA */
1874     ntlm_AcquireCredentialsHandleA,     /* AcquireCredentialsHandleA */
1875     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1876     NULL,   /* Reserved2 */
1877     ntlm_InitializeSecurityContextA,    /* InitializeSecurityContextA */
1878     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1879     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1880     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1881     NULL,  /* ApplyControlToken */
1882     ntlm_QueryContextAttributesA,       /* QueryContextAttributesA */
1883     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1884     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1885     ntlm_MakeSignature,                 /* MakeSignature */
1886     ntlm_VerifySignature,               /* VerifySignature */
1887     FreeContextBuffer,                  /* FreeContextBuffer */
1888     NULL,   /* QuerySecurityPackageInfoA */
1889     NULL,   /* Reserved3 */
1890     NULL,   /* Reserved4 */
1891     NULL,   /* ExportSecurityContext */
1892     NULL,   /* ImportSecurityContextA */
1893     NULL,   /* AddCredentialsA */
1894     NULL,   /* Reserved8 */
1895     NULL,   /* QuerySecurityContextToken */
1896     ntlm_EncryptMessage,                /* EncryptMessage */
1897     ntlm_DecryptMessage,                /* DecryptMessage */
1898     NULL,   /* SetContextAttributesA */
1899 };
1900
1901 static const SecurityFunctionTableW ntlmTableW = {
1902     1,
1903     NULL,   /* EnumerateSecurityPackagesW */
1904     ntlm_QueryCredentialsAttributesW,   /* QueryCredentialsAttributesW */
1905     ntlm_AcquireCredentialsHandleW,     /* AcquireCredentialsHandleW */
1906     ntlm_FreeCredentialsHandle,         /* FreeCredentialsHandle */
1907     NULL,   /* Reserved2 */
1908     ntlm_InitializeSecurityContextW,    /* InitializeSecurityContextW */
1909     ntlm_AcceptSecurityContext,         /* AcceptSecurityContext */
1910     ntlm_CompleteAuthToken,             /* CompleteAuthToken */
1911     ntlm_DeleteSecurityContext,         /* DeleteSecurityContext */
1912     NULL,  /* ApplyControlToken */
1913     ntlm_QueryContextAttributesW,       /* QueryContextAttributesW */
1914     ntlm_ImpersonateSecurityContext,    /* ImpersonateSecurityContext */
1915     ntlm_RevertSecurityContext,         /* RevertSecurityContext */
1916     ntlm_MakeSignature,                 /* MakeSignature */
1917     ntlm_VerifySignature,               /* VerifySignature */
1918     FreeContextBuffer,                  /* FreeContextBuffer */
1919     NULL,   /* QuerySecurityPackageInfoW */
1920     NULL,   /* Reserved3 */
1921     NULL,   /* Reserved4 */
1922     NULL,   /* ExportSecurityContext */
1923     NULL,   /* ImportSecurityContextW */
1924     NULL,   /* AddCredentialsW */
1925     NULL,   /* Reserved8 */
1926     NULL,   /* QuerySecurityContextToken */
1927     ntlm_EncryptMessage,                /* EncryptMessage */
1928     ntlm_DecryptMessage,                /* DecryptMessage */
1929     NULL,   /* SetContextAttributesW */
1930 };
1931
1932 #define NTLM_COMMENT \
1933    { 'N', 'T', 'L', 'M', ' ', \
1934      'S', 'e', 'c', 'u', 'r', 'i', 't', 'y', ' ', \
1935      'P', 'a', 'c', 'k', 'a', 'g', 'e', 0}
1936
1937 static CHAR ntlm_comment_A[] = NTLM_COMMENT;
1938 static WCHAR ntlm_comment_W[] = NTLM_COMMENT;
1939
1940 #define NTLM_NAME {'N', 'T', 'L', 'M', 0}
1941
1942 static char ntlm_name_A[] = NTLM_NAME;
1943 static WCHAR ntlm_name_W[] = NTLM_NAME;
1944
1945 /* According to Windows, NTLM has the following capabilities.  */
1946 #define CAPS ( \
1947         SECPKG_FLAG_INTEGRITY | \
1948         SECPKG_FLAG_PRIVACY | \
1949         SECPKG_FLAG_TOKEN_ONLY | \
1950         SECPKG_FLAG_CONNECTION | \
1951         SECPKG_FLAG_MULTI_REQUIRED | \
1952         SECPKG_FLAG_IMPERSONATION | \
1953         SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1954         SECPKG_FLAG_READONLY_WITH_CHECKSUM)
1955
1956 static const SecPkgInfoW infoW = {
1957     CAPS,
1958     1,
1959     RPC_C_AUTHN_WINNT,
1960     NTLM_MAX_BUF,
1961     ntlm_name_W,
1962     ntlm_comment_W
1963 };
1964
1965 static const SecPkgInfoA infoA = {
1966     CAPS,
1967     1,
1968     RPC_C_AUTHN_WINNT,
1969     NTLM_MAX_BUF,
1970     ntlm_name_A,
1971     ntlm_comment_A
1972 };
1973
1974 #define NEGO_COMMENT { 'M', 'i', 'c', 'r', 'o', 's', 'o', 'f', 't', ' ', \
1975     'P', 'a', 'c', 'k', 'a', 'g', 'e', ' ', \
1976     'N', 'e', 'g', 'o', 't', 'i', 'a', 't', 'o', 'r', 0}
1977
1978 static CHAR nego_comment_A[] = NEGO_COMMENT;
1979 static WCHAR nego_comment_W[] = NEGO_COMMENT;
1980
1981 #define NEGO_NAME {'N', 'e', 'g', 'o', 't', 'i', 'a', 't', 'e', 0}
1982
1983 static CHAR nego_name_A[] = NEGO_NAME;
1984 static WCHAR nego_name_W[] = NEGO_NAME;
1985
1986 #define NEGO_CAPS (\
1987     SECPKG_FLAG_INTEGRITY | \
1988     SECPKG_FLAG_PRIVACY | \
1989     SECPKG_FLAG_CONNECTION | \
1990     SECPKG_FLAG_MULTI_REQUIRED | \
1991     SECPKG_FLAG_EXTENDED_ERROR | \
1992     SECPKG_FLAG_IMPERSONATION | \
1993     SECPKG_FLAG_ACCEPT_WIN32_NAME | \
1994     SECPKG_FLAG_READONLY_WITH_CHECKSUM )
1995
1996 /* Not used for now, just kept here for completeness sake. We need to use the
1997  * NTLM_MAX_BUF value. If the hack works, we might want to refactor the code a
1998  * bit. */
1999 #define NEGO_MAX_TOKEN 12000
2000
2001 static const SecPkgInfoW nego_infoW = {
2002     NEGO_CAPS,
2003     1,
2004     RPC_C_AUTHN_GSS_NEGOTIATE,
2005     NTLM_MAX_BUF,
2006     nego_name_W,
2007     nego_comment_W
2008 };
2009
2010 static const SecPkgInfoA nego_infoA = {
2011     NEGO_CAPS,
2012     1,
2013     RPC_C_AUTHN_GSS_NEGOTIATE,
2014     NTLM_MAX_BUF,
2015     nego_name_A,
2016     nego_comment_A
2017 };
2018
2019 void SECUR32_initNTLMSP(void)
2020 {
2021     PNegoHelper helper;
2022     static CHAR version[] = "--version";
2023
2024     SEC_CHAR *args[] = {
2025         ntlm_auth,
2026         version,
2027         NULL };
2028
2029     if(fork_helper(&helper, ntlm_auth, args) != SEC_E_OK)
2030     {
2031         /* Cheat and allocate a helper anyway, so cleanup later will work. */
2032         helper = HeapAlloc(GetProcessHeap(),0, sizeof(NegoHelper));
2033         helper->major = helper->minor = helper->micro = -1;
2034         helper->pipe_in = helper->pipe_out = -1;
2035     }
2036     else
2037         check_version(helper);
2038
2039     if( (helper->major >  MIN_NTLM_AUTH_MAJOR_VERSION) ||
2040         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
2041          helper->minor >  MIN_NTLM_AUTH_MINOR_VERSION) ||
2042         (helper->major == MIN_NTLM_AUTH_MAJOR_VERSION  &&
2043          helper->minor == MIN_NTLM_AUTH_MINOR_VERSION  &&
2044          helper->micro >= MIN_NTLM_AUTH_MICRO_VERSION) )
2045     {
2046         SecureProvider *provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
2047         SecureProvider *nego_provider = SECUR32_addProvider(&ntlmTableA, &ntlmTableW, NULL);
2048
2049         SECUR32_addPackages(provider, 1L, &infoA, &infoW);
2050         /* HACK: Also pretend this is the Negotiate provider */
2051         SECUR32_addPackages(nego_provider, 1L, &nego_infoA, &nego_infoW);
2052     }
2053     else
2054     {
2055         ERR_(winediag)("%s was not found or is outdated. "
2056                        "Make sure that ntlm_auth >= %d.%d.%d is in your path. "
2057                        "Usually, you can find it in the winbind package of your distribution.\n",
2058                        ntlm_auth,
2059                        MIN_NTLM_AUTH_MAJOR_VERSION,
2060                        MIN_NTLM_AUTH_MINOR_VERSION,
2061                        MIN_NTLM_AUTH_MICRO_VERSION);
2062
2063     }
2064     cleanup_helper(helper);
2065 }