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 = pAuthData;
 185
 186                     TRACE("Username is %s\n", debugstr_wn(auth_data->User, auth_data->UserLength));
 187                     TRACE("Domain name is %s\n", debugstr_wn(auth_data->Domain, auth_data->DomainLength));
 188
 189                     ntlm_cred->username_arg = ntlm_GetUsernameArg(auth_data->User, auth_data->UserLength);
 190                     ntlm_cred->domain_arg = ntlm_GetDomainArg(auth_data->Domain, auth_data->DomainLength);
 191
 192                     if(auth_data->PasswordLength != 0)
 193                     {
 194                         ntlm_cred->pwlen = WideCharToMultiByte(CP_UNIXCP,
 195                                                                WC_NO_BEST_FIT_CHARS, auth_data->Password,
 196                                                                auth_data->PasswordLength, NULL, 0, NULL,
 197                                                                NULL);
 198
 199                         ntlm_cred->password = HeapAlloc(GetProcessHeap(), 0,
 200                                                         ntlm_cred->pwlen);
 201
 202                         WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 203                                             auth_data->Password, auth_data->PasswordLength,
 204                                             ntlm_cred->password, ntlm_cred->pwlen, NULL, NULL);
 205                     }
 206                 }
 207
 208                 phCredential->dwUpper = fCredentialUse;
 209                 phCredential->dwLower = (ULONG_PTR)ntlm_cred;
 210                 TRACE("ACH phCredential->dwUpper: 0x%08lx, dwLower: 0x%08lx\n",
 211                       phCredential->dwUpper, phCredential->dwLower);
 212                 ret = SEC_E_OK;
 213                 break;
 214             }
 215         case SECPKG_CRED_BOTH:
 216             FIXME("AcquireCredentialsHandle: SECPKG_CRED_BOTH stub\n");
 217             ret = SEC_E_UNSUPPORTED_FUNCTION;
 218             phCredential = NULL;
 219             break;
 220         default:
 221             phCredential = NULL;
 222             ret = SEC_E_UNKNOWN_CREDENTIALS;
 223     }
 224
 225     HeapFree(GetProcessHeap(), 0, username);
 226     HeapFree(GetProcessHeap(), 0, domain);
 227
 228     return ret;
 229 }
 230
 231 /***********************************************************************
 232  *              AcquireCredentialsHandleA
 233  */
 234 static SECURITY_STATUS SEC_ENTRY ntlm_AcquireCredentialsHandleA(
 235  SEC_CHAR *pszPrincipal, SEC_CHAR *pszPackage, ULONG fCredentialUse,
 236  PLUID pLogonID, PVOID pAuthData, SEC_GET_KEY_FN pGetKeyFn,
 237  PVOID pGetKeyArgument, PCredHandle phCredential, PTimeStamp ptsExpiry)
 238 {
 239     SECURITY_STATUS ret;
 240     int user_sizeW, domain_sizeW, passwd_sizeW;
 241
 242     SEC_WCHAR *user = NULL, *domain = NULL, *passwd = NULL, *package = NULL;
 243
 244     PSEC_WINNT_AUTH_IDENTITY_W pAuthDataW = NULL;
 245     PSEC_WINNT_AUTH_IDENTITY_A identity  = NULL;
 246
 247     TRACE("(%s, %s, 0x%08x, %p, %p, %p, %p, %p, %p)\n",
 248      debugstr_a(pszPrincipal), debugstr_a(pszPackage), fCredentialUse,
 249      pLogonID, pAuthData, pGetKeyFn, pGetKeyArgument, phCredential, ptsExpiry);
 250
 251     if(pszPackage != NULL)
 252     {
 253         int package_sizeW = MultiByteToWideChar(CP_ACP, 0, pszPackage, -1,
 254                 NULL, 0);
 255
 256         package = HeapAlloc(GetProcessHeap(), 0, package_sizeW *
 257                 sizeof(SEC_WCHAR));
 258         MultiByteToWideChar(CP_ACP, 0, pszPackage, -1, package, package_sizeW);
 259     }
 260
 261
 262     if(pAuthData != NULL)
 263     {
 264         identity = pAuthData;
 265
 266         if(identity->Flags == SEC_WINNT_AUTH_IDENTITY_ANSI)
 267         {
 268             pAuthDataW = HeapAlloc(GetProcessHeap(), 0,
 269                     sizeof(SEC_WINNT_AUTH_IDENTITY_W));
 270
 271             if(identity->UserLength != 0)
 272             {
 273                 user_sizeW = MultiByteToWideChar(CP_ACP, 0,
 274                     (LPCSTR)identity->User, identity->UserLength, NULL, 0);
 275                 user = HeapAlloc(GetProcessHeap(), 0, user_sizeW *
 276                         sizeof(SEC_WCHAR));
 277                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->User,
 278                     identity->UserLength, user, user_sizeW);
 279             }
 280             else
 281             {
 282                 user_sizeW = 0;
 283             }
 284
 285             if(identity->DomainLength != 0)
 286             {
 287                 domain_sizeW = MultiByteToWideChar(CP_ACP, 0,
 288                     (LPCSTR)identity->Domain, identity->DomainLength, NULL, 0);
 289                 domain = HeapAlloc(GetProcessHeap(), 0, domain_sizeW
 290                     * sizeof(SEC_WCHAR));
 291                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Domain,
 292                     identity->DomainLength, domain, domain_sizeW);
 293             }
 294             else
 295             {
 296                 domain_sizeW = 0;
 297             }
 298
 299             if(identity->PasswordLength != 0)
 300             {
 301                 passwd_sizeW = MultiByteToWideChar(CP_ACP, 0,
 302                     (LPCSTR)identity->Password, identity->PasswordLength,
 303                     NULL, 0);
 304                 passwd = HeapAlloc(GetProcessHeap(), 0, passwd_sizeW
 305                     * sizeof(SEC_WCHAR));
 306                 MultiByteToWideChar(CP_ACP, 0, (LPCSTR)identity->Password,
 307                     identity->PasswordLength, passwd, passwd_sizeW);
 308             }
 309             else
 310             {
 311                 passwd_sizeW = 0;
 312             }
 313
 314             pAuthDataW->Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
 315             pAuthDataW->User = user;
 316             pAuthDataW->UserLength = user_sizeW;
 317             pAuthDataW->Domain = domain;
 318             pAuthDataW->DomainLength = domain_sizeW;
 319             pAuthDataW->Password = passwd;
 320             pAuthDataW->PasswordLength = passwd_sizeW;
 321         }
 322         else
 323         {
 324             pAuthDataW = (PSEC_WINNT_AUTH_IDENTITY_W)identity;
 325         }
 326     }
 327
 328     ret = ntlm_AcquireCredentialsHandleW(NULL, package, fCredentialUse,
 329             pLogonID, pAuthDataW, pGetKeyFn, pGetKeyArgument, phCredential,
 330             ptsExpiry);
 331
 332     HeapFree(GetProcessHeap(), 0, package);
 333     HeapFree(GetProcessHeap(), 0, user);
 334     HeapFree(GetProcessHeap(), 0, domain);
 335     HeapFree(GetProcessHeap(), 0, passwd);
 336     if(pAuthDataW != (PSEC_WINNT_AUTH_IDENTITY_W)identity)
 337         HeapFree(GetProcessHeap(), 0, pAuthDataW);
 338
 339     return ret;
 340 }
 341
 342 /*************************************************************************
 343  *             ntlm_GetTokenBufferIndex
 344  * Calculates the index of the secbuffer with BufferType == SECBUFFER_TOKEN
 345  * Returns index if found or -1 if not found.
 346  */
 347 static int ntlm_GetTokenBufferIndex(PSecBufferDesc pMessage)
 348 {
 349     UINT i;
 350
 351     TRACE("%p\n", pMessage);
 352
 353     for( i = 0; i < pMessage->cBuffers; ++i )
 354     {
 355         if(pMessage->pBuffers[i].BufferType == SECBUFFER_TOKEN)
 356             return i;
 357     }
 358
 359     return -1;
 360 }
 361
 362 /*************************************************************************
 363  *             ntlm_GetDataBufferIndex
 364  * Calculates the index of the first secbuffer with BufferType == SECBUFFER_DATA
 365  * Returns index if found or -1 if not found.
 366  */
 367 static int ntlm_GetDataBufferIndex(PSecBufferDesc pMessage)
 368 {
 369     UINT i;
 370
 371     TRACE("%p\n", pMessage);
 372
 373     for( i = 0; i < pMessage->cBuffers; ++i )
 374     {
 375         if(pMessage->pBuffers[i].BufferType == SECBUFFER_DATA)
 376             return i;
 377     }
 378
 379     return -1;
 380 }
 381
 382 static BOOL ntlm_GetCachedCredential(const SEC_WCHAR *pszTargetName, PCREDENTIALW *cred)
 383 {
 384     LPCWSTR p;
 385     LPCWSTR pszHost;
 386     LPWSTR pszHostOnly;
 387     BOOL ret;
 388
 389     if (!pszTargetName)
 390         return FALSE;
 391
 392     /* try to get the start of the hostname from service principal name (SPN) */
 393     pszHost = strchrW(pszTargetName, '/');
 394     if (pszHost)
 395     {
 396         /* skip slash character */
 397         pszHost++;
 398
 399         /* find end of host by detecting start of instance port or start of referrer */
 400         p = strchrW(pszHost, ':');
 401         if (!p)
 402             p = strchrW(pszHost, '/');
 403         if (!p)
 404             p = pszHost + strlenW(pszHost);
 405     }
 406     else /* otherwise not an SPN, just a host */
 407     {
 408         pszHost = pszTargetName;
 409         p = pszHost + strlenW(pszHost);
 410     }
 411
 412     pszHostOnly = HeapAlloc(GetProcessHeap(), 0, (p - pszHost + 1) * sizeof(WCHAR));
 413     if (!pszHostOnly)
 414         return FALSE;
 415
 416     memcpy(pszHostOnly, pszHost, (p - pszHost) * sizeof(WCHAR));
 417     pszHostOnly[p - pszHost] = '\0';
 418
 419     ret = CredReadW(pszHostOnly, CRED_TYPE_DOMAIN_PASSWORD, 0, cred);
 420
 421     HeapFree(GetProcessHeap(), 0, pszHostOnly);
 422     return ret;
 423 }
 424
 425 /***********************************************************************
 426  *              InitializeSecurityContextW
 427  */
 428 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextW(
 429  PCredHandle phCredential, PCtxtHandle phContext, SEC_WCHAR *pszTargetName,
 430  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 431  PSecBufferDesc pInput, ULONG Reserved2, PCtxtHandle phNewContext,
 432  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 433 {
 434     SECURITY_STATUS ret;
 435     PNtlmCredentials ntlm_cred = NULL;
 436     PNegoHelper helper = NULL;
 437     ULONG ctxt_attr = 0;
 438     char* buffer, *want_flags = NULL;
 439     PBYTE bin;
 440     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 441     int token_idx;
 442     SEC_CHAR *username = NULL;
 443     SEC_CHAR *domain = NULL;
 444     SEC_CHAR *password = NULL;
 445
 446     TRACE("%p %p %s 0x%08x %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 447      debugstr_w(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 448      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 449
 450     /****************************************
 451      * When communicating with the client, there can be the
 452      * following reply packets:
 453      * YR <base64 blob>         should be sent to the server
 454      * PW                       should be sent back to helper with
 455      *                          base64 encoded password
 456      * AF <base64 blob>         client is done, blob should be
 457      *                          sent to server with KK prefixed
 458      * GF <string list>         A string list of negotiated flags
 459      * GK <base64 blob>         base64 encoded session key
 460      * BH <char reason>         something broke
 461      */
 462     /* The squid cache size is 2010 chars, and that's what ntlm_auth uses */
 463
 464     if(TargetDataRep == SECURITY_NETWORK_DREP){
 465         TRACE("Setting SECURITY_NETWORK_DREP\n");
 466     }
 467
 468     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 469     bin = HeapAlloc(GetProcessHeap(), 0, sizeof(BYTE) * NTLM_MAX_BUF);
 470
 471     if((phContext == NULL) && (pInput == NULL))
 472     {
 473         static char helper_protocol[] = "--helper-protocol=ntlmssp-client-1";
 474         static CHAR credentials_argv[] = "--use-cached-creds";
 475         SEC_CHAR *client_argv[5];
 476         int pwlen = 0;
 477
 478         TRACE("First time in ISC()\n");
 479
 480         if(!phCredential)
 481         {
 482             ret = SEC_E_INVALID_HANDLE;
 483             goto isc_end;
 484         }
 485
 486         /* As the server side of sspi never calls this, make sure that
 487          * the handler is a client handler.
 488          */
 489         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
 490         if(ntlm_cred->mode != NTLM_CLIENT)
 491         {
 492             TRACE("Cred mode = %d\n", ntlm_cred->mode);
 493             ret = SEC_E_INVALID_HANDLE;
 494             goto isc_end;
 495         }
 496
 497         client_argv[0] = ntlm_auth;
 498         client_argv[1] = helper_protocol;
 499         if (!ntlm_cred->username_arg && !ntlm_cred->domain_arg)
 500         {
 501             LPWKSTA_USER_INFO_1 ui = NULL;
 502             NET_API_STATUS status;
 503             PCREDENTIALW cred;
 504
 505             if (ntlm_GetCachedCredential(pszTargetName, &cred))
 506             {
 507                 LPWSTR p;
 508                 p = strchrW(cred->UserName, '\\');
 509                 if (p)
 510                 {
 511                     domain = ntlm_GetDomainArg(cred->UserName, p - cred->UserName);
 512                     p++;
 513                 }
 514                 else
 515                 {
 516                     domain = ntlm_GetDomainArg(NULL, 0);
 517                     p = cred->UserName;
 518                 }
 519
 520                 username = ntlm_GetUsernameArg(p, -1);
 521
 522                 if(cred->CredentialBlobSize != 0)
 523                 {
 524                     pwlen = WideCharToMultiByte(CP_UNIXCP,
 525                         WC_NO_BEST_FIT_CHARS, (LPWSTR)cred->CredentialBlob,
 526                         cred->CredentialBlobSize / sizeof(WCHAR), NULL, 0,
 527                         NULL, NULL);
 528
 529                     password = HeapAlloc(GetProcessHeap(), 0, pwlen);
 530
 531                     WideCharToMultiByte(CP_UNIXCP, WC_NO_BEST_FIT_CHARS,
 532                                         (LPWSTR)cred->CredentialBlob,
 533                                         cred->CredentialBlobSize / sizeof(WCHAR),
 534                                         password, pwlen, NULL, NULL);
 535                 }
 536
 537                 CredFree(cred);
 538
 539                 client_argv[2] = username;
 540                 client_argv[3] = domain;
 541                 client_argv[4] = NULL;
 542             }
 543             else
 544             {
 545                 status = NetWkstaUserGetInfo(NULL, 1, (LPBYTE *)&ui);
 546                 if (status != NERR_Success || ui == NULL)
 547                 {
 548                     ret = SEC_E_NO_CREDENTIALS;
 549                     goto isc_end;
 550                 }
 551                 username = ntlm_GetUsernameArg(ui->wkui1_username, -1);
 552                 NetApiBufferFree(ui);
 553
 554                 TRACE("using cached credentials\n");
 555
 556                 client_argv[2] = username;
 557                 client_argv[3] = credentials_argv;
 558                 client_argv[4] = NULL;
 559             }
 560         }
 561         else
 562         {
 563             client_argv[2] = ntlm_cred->username_arg;
 564             client_argv[3] = ntlm_cred->domain_arg;
 565             client_argv[4] = NULL;
 566         }
 567
 568         if((ret = fork_helper(&helper, ntlm_auth, client_argv)) != SEC_E_OK)
 569             goto isc_end;
 570
 571         helper->mode = NTLM_CLIENT;
 572         helper->session_key = HeapAlloc(GetProcessHeap(), 0, 16);
 573         if (!helper->session_key)
 574         {
 575             cleanup_helper(helper);
 576             ret = SEC_E_INSUFFICIENT_MEMORY;
 577             goto isc_end;
 578         }
 579
 580         /* Generate the dummy session key = MD4(MD4(password))*/
 581         if(password || ntlm_cred->password)
 582         {
 583             SEC_WCHAR *unicode_password;
 584             int passwd_lenW;
 585
 586             TRACE("Converting password to unicode.\n");
 587             passwd_lenW = MultiByteToWideChar(CP_ACP, 0,
 588                                               password ? password : ntlm_cred->password,
 589                                               password ? pwlen : ntlm_cred->pwlen,
 590                                               NULL, 0);
 591             unicode_password = HeapAlloc(GetProcessHeap(), 0,
 592                                          passwd_lenW * sizeof(SEC_WCHAR));
 593             MultiByteToWideChar(CP_ACP, 0, password ? password : ntlm_cred->password,
 594                                 password ? pwlen : ntlm_cred->pwlen, unicode_password, passwd_lenW);
 595
 596             SECUR32_CreateNTLM1SessionKey((PBYTE)unicode_password,
 597                                           passwd_lenW * sizeof(SEC_WCHAR), helper->session_key);
 598
 599             HeapFree(GetProcessHeap(), 0, unicode_password);
 600         }
 601         else
 602             memset(helper->session_key, 0, 16);
 603
 604         /* Allocate space for a maximal string of
 605          * "SF NTLMSSP_FEATURE_SIGN NTLMSSP_FEATURE_SEAL
 606          * NTLMSSP_FEATURE_SESSION_KEY"
 607          */
 608         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
 609         if(want_flags == NULL)
 610         {
 611             cleanup_helper(helper);
 612             ret = SEC_E_INSUFFICIENT_MEMORY;
 613             goto isc_end;
 614         }
 615         lstrcpyA(want_flags, "SF");
 616         if(fContextReq & ISC_REQ_CONFIDENTIALITY)
 617         {
 618             if(strstr(want_flags, "NTLMSSP_FEATURE_SEAL") == NULL)
 619                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
 620         }
 621         if(fContextReq & ISC_REQ_CONNECTION)
 622             ctxt_attr |= ISC_RET_CONNECTION;
 623         if(fContextReq & ISC_REQ_EXTENDED_ERROR)
 624             ctxt_attr |= ISC_RET_EXTENDED_ERROR;
 625         if(fContextReq & ISC_REQ_INTEGRITY)
 626         {
 627             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 628                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 629         }
 630         if(fContextReq & ISC_REQ_MUTUAL_AUTH)
 631             ctxt_attr |= ISC_RET_MUTUAL_AUTH;
 632         if(fContextReq & ISC_REQ_REPLAY_DETECT)
 633         {
 634             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 635                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 636         }
 637         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
 638         {
 639             if(strstr(want_flags, "NTLMSSP_FEATURE_SIGN") == NULL)
 640                 lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
 641         }
 642         if(fContextReq & ISC_REQ_STREAM)
 643             FIXME("ISC_REQ_STREAM\n");
 644         if(fContextReq & ISC_REQ_USE_DCE_STYLE)
 645             ctxt_attr |= ISC_RET_USED_DCE_STYLE;
 646         if(fContextReq & ISC_REQ_DELEGATE)
 647             ctxt_attr |= ISC_RET_DELEGATE;
 648
 649         /* If no password is given, try to use cached credentials. Fall back to an empty
 650          * password if this failed. */
 651         if(!password && !ntlm_cred->password)
 652         {
 653             lstrcpynA(buffer, "OK", max_len-1);
 654             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 655             {
 656                 cleanup_helper(helper);
 657                 goto isc_end;
 658             }
 659             /* If the helper replied with "PW", using cached credentials failed */
 660             if(!strncmp(buffer, "PW", 2))
 661             {
 662                 TRACE("Using cached credentials failed.\n");
 663                 lstrcpynA(buffer, "PW AA==", max_len-1);
 664             }
 665             else /* Just do a noop on the next run */
 666                 lstrcpynA(buffer, "OK", max_len-1);
 667         }
 668         else
 669         {
 670             lstrcpynA(buffer, "PW ", max_len-1);
 671             if((ret = encodeBase64(password ? (unsigned char *)password : (unsigned char *)ntlm_cred->password,
 672                         password ? pwlen : ntlm_cred->pwlen, buffer+3,
 673                         max_len-3, &buffer_len)) != SEC_E_OK)
 674             {
 675                 cleanup_helper(helper);
 676                 goto isc_end;
 677             }
 678
 679         }
 680
 681         TRACE("Sending to helper: %s\n", debugstr_a(buffer));
 682         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 683         {
 684             cleanup_helper(helper);
 685             goto isc_end;
 686         }
 687
 688         TRACE("Helper returned %s\n", debugstr_a(buffer));
 689
 690         if(lstrlenA(want_flags) > 2)
 691         {
 692             TRACE("Want flags are %s\n", debugstr_a(want_flags));
 693             lstrcpynA(buffer, want_flags, max_len-1);
 694             if((ret = run_helper(helper, buffer, max_len, &buffer_len))
 695                     != SEC_E_OK)
 696                 goto isc_end;
 697             if(!strncmp(buffer, "BH", 2))
 698                 ERR("Helper doesn't understand new command set. Expect more things to fail.\n");
 699         }
 700
 701         lstrcpynA(buffer, "YR", max_len-1);
 702
 703         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 704         {
 705             cleanup_helper(helper);
 706             goto isc_end;
 707         }
 708
 709         TRACE("%s\n", buffer);
 710
 711         if(strncmp(buffer, "YR ", 3) != 0)
 712         {
 713             /* Something borked */
 714             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 715             ret = SEC_E_INTERNAL_ERROR;
 716             cleanup_helper(helper);
 717             goto isc_end;
 718         }
 719         if((ret = decodeBase64(buffer+3, buffer_len-3, bin,
 720                         max_len-1, &bin_len)) != SEC_E_OK)
 721         {
 722             cleanup_helper(helper);
 723             goto isc_end;
 724         }
 725
 726         /* put the decoded client blob into the out buffer */
 727
 728         phNewContext->dwUpper = ctxt_attr;
 729         phNewContext->dwLower = (ULONG_PTR)helper;
 730
 731         ret = SEC_I_CONTINUE_NEEDED;
 732     }
 733     else
 734     {
 735         int input_token_idx;
 736
 737         /* handle second call here */
 738         /* encode server data to base64 */
 739         if (!pInput || ((input_token_idx = ntlm_GetTokenBufferIndex(pInput)) == -1))
 740         {
 741             ret = SEC_E_INVALID_TOKEN;
 742             goto isc_end;
 743         }
 744
 745         if(!phContext)
 746         {
 747             ret = SEC_E_INVALID_HANDLE;
 748             goto isc_end;
 749         }
 750
 751         /* As the server side of sspi never calls this, make sure that
 752          * the handler is a client handler.
 753          */
 754         helper = (PNegoHelper)phContext->dwLower;
 755         if(helper->mode != NTLM_CLIENT)
 756         {
 757             TRACE("Helper mode = %d\n", helper->mode);
 758             ret = SEC_E_INVALID_HANDLE;
 759             goto isc_end;
 760         }
 761
 762         if (!pInput->pBuffers[input_token_idx].pvBuffer)
 763         {
 764             ret = SEC_E_INTERNAL_ERROR;
 765             goto isc_end;
 766         }
 767
 768         if(pInput->pBuffers[input_token_idx].cbBuffer > max_len)
 769         {
 770             TRACE("pInput->pBuffers[%d].cbBuffer is: %d\n",
 771                     input_token_idx,
 772                     pInput->pBuffers[input_token_idx].cbBuffer);
 773             ret = SEC_E_INVALID_TOKEN;
 774             goto isc_end;
 775         }
 776         else
 777             bin_len = pInput->pBuffers[input_token_idx].cbBuffer;
 778
 779         memcpy(bin, pInput->pBuffers[input_token_idx].pvBuffer, bin_len);
 780
 781         lstrcpynA(buffer, "TT ", max_len-1);
 782
 783         if((ret = encodeBase64(bin, bin_len, buffer+3,
 784                         max_len-3, &buffer_len)) != SEC_E_OK)
 785             goto isc_end;
 786
 787         TRACE("Server sent: %s\n", debugstr_a(buffer));
 788
 789         /* send TT base64 blob to ntlm_auth */
 790         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 791             goto isc_end;
 792
 793         TRACE("Helper replied: %s\n", debugstr_a(buffer));
 794
 795         if( (strncmp(buffer, "KK ", 3) != 0) &&
 796                 (strncmp(buffer, "AF ", 3) !=0))
 797         {
 798             TRACE("Helper returned %c%c\n", buffer[0], buffer[1]);
 799             ret = SEC_E_INVALID_TOKEN;
 800             goto isc_end;
 801         }
 802
 803         /* decode the blob and send it to server */
 804         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 805                         &bin_len)) != SEC_E_OK)
 806         {
 807             goto isc_end;
 808         }
 809
 810         phNewContext->dwUpper = ctxt_attr;
 811         phNewContext->dwLower = (ULONG_PTR)helper;
 812
 813         ret = SEC_E_OK;
 814     }
 815
 816     /* put the decoded client blob into the out buffer */
 817
 818     if (!pOutput || ((token_idx = ntlm_GetTokenBufferIndex(pOutput)) == -1))
 819     {
 820         TRACE("no SECBUFFER_TOKEN buffer could be found\n");
 821         ret = SEC_E_BUFFER_TOO_SMALL;
 822         if ((phContext == NULL) && (pInput == NULL))
 823         {
 824             HeapFree(GetProcessHeap(), 0, helper->session_key);
 825             cleanup_helper(helper);
 826             phNewContext->dwUpper = 0;
 827             phNewContext->dwLower = 0;
 828         }
 829         goto isc_end;
 830     }
 831
 832     if (fContextReq & ISC_REQ_ALLOCATE_MEMORY)
 833     {
 834         pOutput->pBuffers[token_idx].pvBuffer = HeapAlloc(GetProcessHeap(), 0, bin_len);
 835         pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 836     }
 837     else if (pOutput->pBuffers[token_idx].cbBuffer < bin_len)
 838     {
 839         TRACE("out buffer is NULL or has not enough space\n");
 840         ret = SEC_E_BUFFER_TOO_SMALL;
 841         if ((phContext == NULL) && (pInput == NULL))
 842         {
 843             HeapFree(GetProcessHeap(), 0, helper->session_key);
 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             HeapFree(GetProcessHeap(), 0, helper->session_key);
 858             cleanup_helper(helper);
 859             phNewContext->dwUpper = 0;
 860             phNewContext->dwLower = 0;
 861         }
 862         goto isc_end;
 863     }
 864
 865     pOutput->pBuffers[token_idx].cbBuffer = bin_len;
 866     memcpy(pOutput->pBuffers[token_idx].pvBuffer, bin, bin_len);
 867
 868     if(ret == SEC_E_OK)
 869     {
 870         TRACE("Getting negotiated flags\n");
 871         lstrcpynA(buffer, "GF", max_len - 1);
 872         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 873             goto isc_end;
 874
 875         if(buffer_len < 3)
 876         {
 877             TRACE("No flags negotiated.\n");
 878             helper->neg_flags = 0l;
 879         }
 880         else
 881         {
 882             TRACE("Negotiated %s\n", debugstr_a(buffer));
 883             sscanf(buffer + 3, "%x", &(helper->neg_flags));
 884             TRACE("Stored 0x%08x as flags\n", helper->neg_flags);
 885         }
 886
 887         TRACE("Getting session key\n");
 888         lstrcpynA(buffer, "GK", max_len - 1);
 889         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) != SEC_E_OK)
 890             goto isc_end;
 891
 892         if(strncmp(buffer, "BH", 2) == 0)
 893             TRACE("No key negotiated.\n");
 894         else if(strncmp(buffer, "GK ", 3) == 0)
 895         {
 896             if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
 897                             &bin_len)) != SEC_E_OK)
 898             {
 899                 TRACE("Failed to decode session key\n");
 900             }
 901             TRACE("Session key is %s\n", debugstr_a(buffer+3));
 902             HeapFree(GetProcessHeap(), 0, helper->session_key);
 903             helper->session_key = HeapAlloc(GetProcessHeap(), 0, bin_len);
 904             if(!helper->session_key)
 905             {
 906                 TRACE("Failed to allocate memory for session key\n");
 907                 ret = SEC_E_INTERNAL_ERROR;
 908                 goto isc_end;
 909             }
 910             memcpy(helper->session_key, bin, bin_len);
 911         }
 912
 913         helper->crypt.ntlm.a4i = SECUR32_arc4Alloc();
 914         SECUR32_arc4Init(helper->crypt.ntlm.a4i, helper->session_key, 16);
 915         helper->crypt.ntlm.seq_num = 0l;
 916         SECUR32_CreateNTLM2SubKeys(helper);
 917         helper->crypt.ntlm2.send_a4i = SECUR32_arc4Alloc();
 918         helper->crypt.ntlm2.recv_a4i = SECUR32_arc4Alloc();
 919         SECUR32_arc4Init(helper->crypt.ntlm2.send_a4i,
 920                          helper->crypt.ntlm2.send_seal_key, 16);
 921         SECUR32_arc4Init(helper->crypt.ntlm2.recv_a4i,
 922                          helper->crypt.ntlm2.recv_seal_key, 16);
 923         helper->crypt.ntlm2.send_seq_no = 0l;
 924         helper->crypt.ntlm2.recv_seq_no = 0l;
 925     }
 926
 927 isc_end:
 928     HeapFree(GetProcessHeap(), 0, username);
 929     HeapFree(GetProcessHeap(), 0, domain);
 930     HeapFree(GetProcessHeap(), 0, password);
 931     HeapFree(GetProcessHeap(), 0, want_flags);
 932     HeapFree(GetProcessHeap(), 0, buffer);
 933     HeapFree(GetProcessHeap(), 0, bin);
 934     return ret;
 935 }
 936
 937 /***********************************************************************
 938  *              InitializeSecurityContextA
 939  */
 940 static SECURITY_STATUS SEC_ENTRY ntlm_InitializeSecurityContextA(
 941  PCredHandle phCredential, PCtxtHandle phContext, SEC_CHAR *pszTargetName,
 942  ULONG fContextReq, ULONG Reserved1, ULONG TargetDataRep,
 943  PSecBufferDesc pInput,ULONG Reserved2, PCtxtHandle phNewContext,
 944  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 945 {
 946     SECURITY_STATUS ret;
 947     SEC_WCHAR *target = NULL;
 948
 949     TRACE("%p %p %s %d %d %d %p %d %p %p %p %p\n", phCredential, phContext,
 950      debugstr_a(pszTargetName), fContextReq, Reserved1, TargetDataRep, pInput,
 951      Reserved1, phNewContext, pOutput, pfContextAttr, ptsExpiry);
 952
 953     if(pszTargetName != NULL)
 954     {
 955         int target_size = MultiByteToWideChar(CP_ACP, 0, pszTargetName,
 956             strlen(pszTargetName)+1, NULL, 0);
 957         target = HeapAlloc(GetProcessHeap(), 0, target_size *
 958                 sizeof(SEC_WCHAR));
 959         MultiByteToWideChar(CP_ACP, 0, pszTargetName, strlen(pszTargetName)+1,
 960             target, target_size);
 961     }
 962
 963     ret = ntlm_InitializeSecurityContextW(phCredential, phContext, target,
 964             fContextReq, Reserved1, TargetDataRep, pInput, Reserved2,
 965             phNewContext, pOutput, pfContextAttr, ptsExpiry);
 966
 967     HeapFree(GetProcessHeap(), 0, target);
 968     return ret;
 969 }
 970
 971 /***********************************************************************
 972  *              AcceptSecurityContext
 973  */
 974 static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
 975  PCredHandle phCredential, PCtxtHandle phContext, PSecBufferDesc pInput,
 976  ULONG fContextReq, ULONG TargetDataRep, PCtxtHandle phNewContext,
 977  PSecBufferDesc pOutput, ULONG *pfContextAttr, PTimeStamp ptsExpiry)
 978 {
 979     SECURITY_STATUS ret;
 980     char *buffer, *want_flags = NULL;
 981     PBYTE bin;
 982     int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
 983     ULONG ctxt_attr = 0;
 984     PNegoHelper helper;
 985     PNtlmCredentials ntlm_cred;
 986
 987     TRACE("%p %p %p %d %d %p %p %p %p\n", phCredential, phContext, pInput,
 988      fContextReq, TargetDataRep, phNewContext, pOutput, pfContextAttr,
 989      ptsExpiry);
 990
 991     buffer = HeapAlloc(GetProcessHeap(), 0, sizeof(char) * NTLM_MAX_BUF);
 992     bin    = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
 993
 994     if(TargetDataRep == SECURITY_NETWORK_DREP){
 995         TRACE("Using SECURITY_NETWORK_DREP\n");
 996     }
 997
 998     if(phContext == NULL)
 999     {
1000         static CHAR server_helper_protocol[] = "--helper-protocol=squid-2.5-ntlmssp";
1001         SEC_CHAR *server_argv[] = { ntlm_auth,
1002             server_helper_protocol,
1003             NULL };
1004
1005         if (!phCredential)
1006         {
1007             ret = SEC_E_INVALID_HANDLE;
1008             goto asc_end;
1009         }
1010
1011         ntlm_cred = (PNtlmCredentials)phCredential->dwLower;
1012
1013         if(ntlm_cred->mode != NTLM_SERVER)
1014         {
1015             ret = SEC_E_INVALID_HANDLE;
1016             goto asc_end;
1017         }
1018
1019         /* This is the first call to AcceptSecurityHandle */
1020         if(pInput == NULL)
1021         {
1022             ret = SEC_E_INCOMPLETE_MESSAGE;
1023             goto asc_end;
1024         }
1025
1026         if(pInput->cBuffers < 1)
1027         {
1028             ret = SEC_E_INCOMPLETE_MESSAGE;
1029             goto asc_end;
1030         }
1031
1032         if(pInput->pBuffers[0].cbBuffer > max_len)
1033         {
1034             ret = SEC_E_INVALID_TOKEN;
1035             goto asc_end;
1036         }
1037         else
1038             bin_len = pInput->pBuffers[0].cbBuffer;
1039
1040         if( (ret = fork_helper(&helper, ntlm_auth, server_argv)) !=
1041             SEC_E_OK)
1042         {
1043             ret = SEC_E_INTERNAL_ERROR;
1044             goto asc_end;
1045         }
1046         helper->mode = NTLM_SERVER;
1047
1048         /* Handle all the flags */
1049         want_flags = HeapAlloc(GetProcessHeap(), 0, 73);
1050         if(want_flags == NULL)
1051         {
1052             TRACE("Failed to allocate memory for the want_flags!\n");
1053             ret = SEC_E_INSUFFICIENT_MEMORY;
1054             cleanup_helper(helper);
1055             goto asc_end;
1056         }
1057         lstrcpyA(want_flags, "SF");
1058         if(fContextReq & ASC_REQ_ALLOCATE_MEMORY)
1059         {
1060             FIXME("ASC_REQ_ALLOCATE_MEMORY stub\n");
1061         }
1062         if(fContextReq & ASC_REQ_CONFIDENTIALITY)
1063         {
1064             lstrcatA(want_flags, " NTLMSSP_FEATURE_SEAL");
1065         }
1066         if(fContextReq & ASC_REQ_CONNECTION)
1067         {
1068             /* This is default, so we'll enable it */
1069             lstrcatA(want_flags, " NTLMSSP_FEATURE_SESSION_KEY");
1070             ctxt_attr |= ASC_RET_CONNECTION;
1071         }
1072         if(fContextReq & ASC_REQ_EXTENDED_ERROR)
1073         {
1074             FIXME("ASC_REQ_EXTENDED_ERROR stub\n");
1075         }
1076         if(fContextReq & ASC_REQ_INTEGRITY)
1077         {
1078             lstrcatA(want_flags, " NTLMSSP_FEATURE_SIGN");
1079         }
1080         if(fContextReq & ASC_REQ_MUTUAL_AUTH)
1081         {
1082             FIXME("ASC_REQ_MUTUAL_AUTH stub\n");
1083         }
1084         if(fContextReq & ASC_REQ_REPLAY_DETECT)
1085         {
1086             FIXME("ASC_REQ_REPLAY_DETECT stub\n");
1087         }
1088         if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
1089         {
1090             FIXME("ASC_REQ_SEQUENCE_DETECT stub\n");
1091         }
1092         if(fContextReq & ISC_REQ_STREAM)
1093         {
1094             FIXME("ASC_REQ_STREAM stub\n");
1095         }
1096         /* Done with the flags */
1097
1098         if(lstrlenA(want_flags) > 3)
1099         {
1100             TRACE("Server set want_flags: %s\n", debugstr_a(want_flags));
1101             lstrcpynA(buffer, want_flags, max_len - 1);
1102             if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1103                     SEC_E_OK)
1104             {
1105                 cleanup_helper(helper);
1106                 goto asc_end;
1107             }
1108             if(!strncmp(buffer, "BH", 2))
1109                 TRACE("Helper doesn't understand new command set\n");
1110         }
1111
1112         /* This is the YR request from the client, encode to base64 */
1113
1114         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1115
1116         lstrcpynA(buffer, "YR ", max_len-1);
1117
1118         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1119                     &buffer_len)) != SEC_E_OK)
1120         {
1121             cleanup_helper(helper);
1122             goto asc_end;
1123         }
1124
1125         TRACE("Client sent: %s\n", debugstr_a(buffer));
1126
1127         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1128                     SEC_E_OK)
1129         {
1130             cleanup_helper(helper);
1131             goto asc_end;
1132         }
1133
1134         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1135         /* The expected answer is TT <base64 blob> */
1136
1137         if(strncmp(buffer, "TT ", 3) != 0)
1138         {
1139             ret = SEC_E_INTERNAL_ERROR;
1140             cleanup_helper(helper);
1141             goto asc_end;
1142         }
1143
1144         if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
1145                         &bin_len)) != SEC_E_OK)
1146         {
1147             cleanup_helper(helper);
1148             goto asc_end;
1149         }
1150
1151         /* send this to the client */
1152         if(pOutput == NULL)
1153         {
1154             ret = SEC_E_INSUFFICIENT_MEMORY;
1155             cleanup_helper(helper);
1156             goto asc_end;
1157         }
1158
1159         if(pOutput->cBuffers < 1)
1160         {
1161             ret = SEC_E_INSUFFICIENT_MEMORY;
1162             cleanup_helper(helper);
1163             goto asc_end;
1164         }
1165
1166         pOutput->pBuffers[0].cbBuffer = bin_len;
1167         pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
1168         memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
1169         ret = SEC_I_CONTINUE_NEEDED;
1170
1171     }
1172     else
1173     {
1174         /* we expect a KK request from client */
1175         if(pInput == NULL)
1176         {
1177             ret = SEC_E_INCOMPLETE_MESSAGE;
1178             goto asc_end;
1179         }
1180
1181         if(pInput->cBuffers < 1)
1182         {
1183             ret = SEC_E_INCOMPLETE_MESSAGE;
1184             goto asc_end;
1185         }
1186
1187         if(!phContext)
1188         {
1189             ret = SEC_E_INVALID_HANDLE;
1190             goto asc_end;
1191         }
1192
1193         helper = (PNegoHelper)phContext->dwLower;
1194
1195         if(helper->mode != NTLM_SERVER)
1196         {
1197             ret = SEC_E_INVALID_HANDLE;
1198             goto asc_end;
1199         }
1200
1201         if(pInput->pBuffers[0].cbBuffer > max_len)
1202         {
1203             ret = SEC_E_INVALID_TOKEN;
1204             goto asc_end;
1205         }
1206         else
1207             bin_len = pInput->pBuffers[0].cbBuffer;
1208
1209         memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
1210
1211         lstrcpynA(buffer, "KK ", max_len-1);
1212
1213         if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
1214                     &buffer_len)) != SEC_E_OK)
1215         {
1216             goto asc_end;
1217         }
1218
1219         TRACE("Client sent: %s\n", debugstr_a(buffer));
1220
1221         if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
1222                     SEC_E_OK)
1223         {
1224             goto asc_end;
1225         }
1226
1227         TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
1228
1229         /* At this point, we get a NA if the user didn't authenticate, but a BH
1230          * if ntlm_auth could not connect to winbindd. Apart from running Wine
1231          * as root, there is no way to fix this for now, so just handle this as
1232          * a failed login. */
1233         if(strncmp(buffer, "AF ", 3) != 0)
1234         {
1235             if(strncmp(buffer, "NA ", 3) == 0)
1236             {
1237                 ret = SEC_E_LOGON_DENIED;
1238                 goto asc_end;
1239             }
1240             else
1241             {
1242                 size_t ntlm_pipe_err_len = strlen("BH NT_STATUS_ACCESS_DENIED");
1243
1244                 if( (buffer_len >= ntlm_pipe_err_len) &&
1245                     (strncmp(buffer, "BH NT_STATUS_ACCESS_DENIED",
1246                              ntlm_pipe_err_len) == 0))
1247                 {
1248                     TRACE("Connection to winbindd failed\n");
1249                     ret = SEC_E_LOGON_DENIED;
1250                 }
1251                 else
1252                     ret = SEC_E_INTERNAL_ERROR;
1253
1254                 goto asc_end;
1255             }
1256         }
1257         pOutput->pBuffers[0].cbBuffer = 0;
1258         ret = SEC_E_OK;
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("%s was not found or is outdated. "
2056             "Make sure that ntlm_auth >= %d.%d.%d is in your path.\n",
2057             ntlm_auth,
2058             MIN_NTLM_AUTH_MAJOR_VERSION,
2059             MIN_NTLM_AUTH_MINOR_VERSION,
2060             MIN_NTLM_AUTH_MICRO_VERSION);
2061         ERR("Usually, you can find it in the winbind package of your "
2062             "distribution.\n");
2063
2064     }
2065     cleanup_helper(helper);
2066 }