dlls/secur32/secur32.c

   1 /* Copyright (C) 2004 Juan Lang
   2  *
   3  * This file implements loading of SSP DLLs.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19 #include <assert.h>
  20 #include <stdarg.h>
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "winnls.h"
  24 #include "winreg.h"
  25 #include "winternl.h"
  26 #include "shlwapi.h"
  27 #include "sspi.h"
  28 #include "secur32_priv.h"
  29 #include "secext.h"
  30 #include "ntsecapi.h"
  31 #include "thunks.h"
  32
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(secur32);
  36
  37 /**
  38  *  Type definitions
  39  */
  40
  41 typedef struct _SecurePackageTable
  42 {
  43     DWORD numPackages;
  44     DWORD numAllocated;
  45     SecurePackage table[1];
  46 } SecurePackageTable;
  47
  48 typedef struct _SecureProviderTable
  49 {
  50     DWORD numProviders;
  51     DWORD numAllocated;
  52     SecureProvider table[1];
  53 } SecureProviderTable;
  54
  55 /**
  56  *  Prototypes
  57  */
  58
  59 /* Makes sure table has space for at least howBig entries.  If table is NULL,
  60  * returns a newly allocated table.  Otherwise returns the address of the
  61  * modified table, which may not be the same was when called.
  62  */
  63 static SecurePackageTable *_resizePackageTable(SecurePackageTable *table,
  64  DWORD howBig);
  65
  66 /* Makes sure table has space for at least howBig entries.  If table is NULL,
  67  * returns a newly allocated table.  Otherwise returns the address of the
  68  * modified table, which may not be the same was when called.
  69  */
  70 static SecureProviderTable *_resizeProviderTable(SecureProviderTable *table,
  71  DWORD howBig);
  72
  73 /* Tries to load moduleName as a provider.  If successful, enumerates what
  74  * packages it can and adds them to the package and provider tables.  Resizes
  75  * tables as necessary.
  76  */
  77 static void _tryLoadProvider(PWSTR moduleName);
  78
  79 /* Initialization: read securityproviders value and attempt to open each dll
  80  * there.  For each DLL, call _tryLoadProvider to see if it's really an SSP.
  81  * Two undocumented functions, AddSecurityPackage(A/W) and
  82  * DeleteSecurityPackage(A/W), seem suspiciously like they'd register or
  83  * unregister a dll, but I'm not sure.
  84  */
  85 static void SECUR32_initializeProviders(void);
  86
  87 /* Frees all loaded packages and providers */
  88 static void SECUR32_freeProviders(void);
  89
  90 /**
  91  *  Globals
  92  */
  93
  94 static CRITICAL_SECTION cs;
  95 static SecurePackageTable *packageTable = NULL;
  96 static SecureProviderTable *providerTable = NULL;
  97
  98 static SecurityFunctionTableA securityFunctionTableA = {
  99     SECURITY_SUPPORT_PROVIDER_INTERFACE_VERSION_2,
 100     EnumerateSecurityPackagesA,
 101     QueryCredentialsAttributesA,
 102     AcquireCredentialsHandleA,
 103     FreeCredentialsHandle,
 104     NULL, /* Reserved2 */
 105     InitializeSecurityContextA,
 106     AcceptSecurityContext,
 107     CompleteAuthToken,
 108     DeleteSecurityContext,
 109     ApplyControlToken,
 110     QueryContextAttributesA,
 111     ImpersonateSecurityContext,
 112     RevertSecurityContext,
 113     MakeSignature,
 114     VerifySignature,
 115     FreeContextBuffer,
 116     QuerySecurityPackageInfoA,
 117     NULL, /* Reserved3 */
 118     NULL, /* Reserved4 */
 119     ExportSecurityContext,
 120     ImportSecurityContextA,
 121     AddCredentialsA,
 122     NULL, /* Reserved8 */
 123     QuerySecurityContextToken,
 124     EncryptMessage,
 125     DecryptMessage,
 126     SetContextAttributesA
 127 };
 128
 129 static SecurityFunctionTableW securityFunctionTableW = {
 130     SECURITY_SUPPORT_PROVIDER_INTERFACE_VERSION_2,
 131     EnumerateSecurityPackagesW,
 132     QueryCredentialsAttributesW,
 133     AcquireCredentialsHandleW,
 134     FreeCredentialsHandle,
 135     NULL, /* Reserved2 */
 136     InitializeSecurityContextW,
 137     AcceptSecurityContext,
 138     CompleteAuthToken,
 139     DeleteSecurityContext,
 140     ApplyControlToken,
 141     QueryContextAttributesW,
 142     ImpersonateSecurityContext,
 143     RevertSecurityContext,
 144     MakeSignature,
 145     VerifySignature,
 146     FreeContextBuffer,
 147     QuerySecurityPackageInfoW,
 148     NULL, /* Reserved3 */
 149     NULL, /* Reserved4 */
 150     ExportSecurityContext,
 151     ImportSecurityContextW,
 152     AddCredentialsW,
 153     NULL, /* Reserved8 */
 154     QuerySecurityContextToken,
 155     EncryptMessage,
 156     DecryptMessage,
 157     SetContextAttributesW
 158 };
 159
 160 /***********************************************************************
 161  *              InitSecurityInterfaceA (SECUR32.@)
 162  */
 163 PSecurityFunctionTableA WINAPI InitSecurityInterfaceA(void)
 164 {
 165     return &securityFunctionTableA;
 166 }
 167
 168 /***********************************************************************
 169  *              InitSecurityInterfaceW (SECUR32.@)
 170  */
 171 PSecurityFunctionTableW WINAPI InitSecurityInterfaceW(void)
 172 {
 173     return &securityFunctionTableW;
 174 }
 175
 176 /* Allocates or resizes table to have space for at least howBig packages.
 177  * Uses Heap functions, because needs to be able to reallocate.
 178  */
 179 static SecurePackageTable *_resizePackageTable(SecurePackageTable *table,
 180  DWORD howBig)
 181 {
 182     SecurePackageTable *ret;
 183
 184     EnterCriticalSection(&cs);
 185     if (table)
 186     {
 187         if (table->numAllocated < howBig)
 188         {
 189             ret = HeapReAlloc(GetProcessHeap(), 0, table,
 190              sizeof(SecurePackageTable) + (howBig - 1) * sizeof(SecurePackage));
 191             if (ret)
 192             {
 193                 ret->numAllocated = howBig;
 194                 table = ret;
 195             }
 196         }
 197         else
 198             ret = table;
 199     }
 200     else
 201     {
 202         DWORD numAllocated = (howBig > 1 ? howBig : 1);
 203
 204         ret = HeapAlloc(GetProcessHeap(), 0,
 205          sizeof(SecurePackageTable) +
 206          (numAllocated - 1) * sizeof(SecurePackage));
 207         if (ret)
 208         {
 209             ret->numAllocated = numAllocated;
 210             ret->numPackages = 0;
 211         }
 212     }
 213     LeaveCriticalSection(&cs);
 214     return ret;
 215 }
 216
 217 /* Allocates or resizes table to have space for at least howBig providers.
 218  * Uses Heap functions, because needs to be able to reallocate.
 219  */
 220 static SecureProviderTable *_resizeProviderTable(SecureProviderTable *table,
 221  DWORD howBig)
 222 {
 223     SecureProviderTable *ret;
 224
 225     EnterCriticalSection(&cs);
 226     if (table)
 227     {
 228         if (table->numAllocated < howBig)
 229         {
 230             ret = HeapReAlloc(GetProcessHeap(), 0, table,
 231              sizeof(SecureProviderTable) +
 232              (howBig - 1) * sizeof(SecureProvider));
 233             if (ret)
 234             {
 235                 ret->numAllocated = howBig;
 236                 table = ret;
 237             }
 238         }
 239         else
 240             ret = table;
 241     }
 242     else
 243     {
 244         DWORD numAllocated = (howBig > 1 ? howBig : 1);
 245
 246         ret = HeapAlloc(GetProcessHeap(), 0,
 247          sizeof(SecureProviderTable) +
 248          (numAllocated - 1) * sizeof(SecureProvider));
 249         if (ret)
 250         {
 251             ret->numAllocated = numAllocated;
 252             ret->numProviders = 0;
 253         }
 254     }
 255     LeaveCriticalSection(&cs);
 256     return ret;
 257 }
 258
 259 PWSTR SECUR32_strdupW(PCWSTR str)
 260 {
 261     PWSTR ret;
 262
 263     if (str)
 264     {
 265         ret = (PWSTR)SECUR32_ALLOC((lstrlenW(str) + 1) * sizeof(WCHAR));
 266         if (ret)
 267             lstrcpyW(ret, str);
 268     }
 269     else
 270         ret = NULL;
 271     return ret;
 272 }
 273
 274 PWSTR SECUR32_AllocWideFromMultiByte(PCSTR str)
 275 {
 276     PWSTR ret;
 277
 278     if (str)
 279     {
 280         int charsNeeded = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);
 281
 282         if (charsNeeded)
 283         {
 284             ret = (PWSTR)SECUR32_ALLOC(charsNeeded * sizeof(WCHAR));
 285             if (ret)
 286                 MultiByteToWideChar(CP_ACP, 0, str, -1, ret, charsNeeded);
 287         }
 288         else
 289             ret = NULL;
 290     }
 291     else
 292         ret = NULL;
 293     return ret;
 294 }
 295
 296 PSTR SECUR32_AllocMultiByteFromWide(PCWSTR str)
 297 {
 298     PSTR ret;
 299
 300     if (str)
 301     {
 302         int charsNeeded = WideCharToMultiByte(CP_ACP, 0, str, -1, NULL, 0,
 303          NULL, NULL);
 304
 305         if (charsNeeded)
 306         {
 307             ret = (PSTR)SECUR32_ALLOC(charsNeeded);
 308             if (ret)
 309                 WideCharToMultiByte(CP_ACP, 0, str, -1, ret, charsNeeded,
 310                  NULL, NULL);
 311         }
 312         else
 313             ret = NULL;
 314     }
 315     else
 316         ret = NULL;
 317     return ret;
 318 }
 319
 320 static void _makeFnTableA(PSecurityFunctionTableA fnTableA,
 321  const PSecurityFunctionTableA inFnTableA,
 322  const PSecurityFunctionTableW inFnTableW)
 323 {
 324     if (fnTableA)
 325     {
 326         if (inFnTableA)
 327         {
 328             /* The size of the version 1 table is based on platform sdk's
 329              * sspi.h, though the sample ssp also provided with platform sdk
 330              * implies only functions through QuerySecurityPackageInfoA are
 331              * implemented (yikes)
 332              */
 333             size_t tableSize = inFnTableA->dwVersion == 1 ?
 334              (LPBYTE)&inFnTableA->SetContextAttributesA -
 335              (LPBYTE)inFnTableA : sizeof(SecurityFunctionTableA);
 336
 337             memcpy(fnTableA, inFnTableA, tableSize);
 338             /* override this, since we can do it internally anyway */
 339             fnTableA->QuerySecurityPackageInfoA =
 340              QuerySecurityPackageInfoA;
 341         }
 342         else if (inFnTableW)
 343         {
 344             /* functions with thunks */
 345             if (inFnTableW->AcquireCredentialsHandleW)
 346                 fnTableA->AcquireCredentialsHandleA =
 347                  thunk_AcquireCredentialsHandleA;
 348             if (inFnTableW->InitializeSecurityContextW)
 349                 fnTableA->InitializeSecurityContextA =
 350                  thunk_InitializeSecurityContextA;
 351             if (inFnTableW->ImportSecurityContextW)
 352                 fnTableA->ImportSecurityContextA =
 353                  thunk_ImportSecurityContextA;
 354             if (inFnTableW->AddCredentialsW)
 355                 fnTableA->AddCredentialsA =
 356                  thunk_AddCredentialsA;
 357             if (inFnTableW->QueryCredentialsAttributesW)
 358                 fnTableA->QueryCredentialsAttributesA =
 359                  thunk_QueryCredentialsAttributesA;
 360             if (inFnTableW->QueryContextAttributesW)
 361                 fnTableA->QueryContextAttributesA =
 362                  thunk_QueryContextAttributesA;
 363             if (inFnTableW->SetContextAttributesW)
 364                 fnTableA->SetContextAttributesA =
 365                  thunk_SetContextAttributesA;
 366             /* this can't be thunked, there's no extra param to know which
 367              * package to forward to */
 368             fnTableA->EnumerateSecurityPackagesA = NULL;
 369             /* functions with no thunks needed */
 370             fnTableA->AcceptSecurityContext = inFnTableW->AcceptSecurityContext;
 371             fnTableA->CompleteAuthToken = inFnTableW->CompleteAuthToken;
 372             fnTableA->DeleteSecurityContext = inFnTableW->DeleteSecurityContext;
 373             fnTableA->ImpersonateSecurityContext =
 374              inFnTableW->ImpersonateSecurityContext;
 375             fnTableA->RevertSecurityContext = inFnTableW->RevertSecurityContext;
 376             fnTableA->MakeSignature = inFnTableW->MakeSignature;
 377             fnTableA->VerifySignature = inFnTableW->VerifySignature;
 378             fnTableA->FreeContextBuffer = inFnTableW->FreeContextBuffer;
 379             fnTableA->QuerySecurityPackageInfoA =
 380              QuerySecurityPackageInfoA;
 381             fnTableA->ExportSecurityContext =
 382              inFnTableW->ExportSecurityContext;
 383             fnTableA->QuerySecurityContextToken =
 384              inFnTableW->QuerySecurityContextToken;
 385             fnTableA->EncryptMessage = inFnTableW->EncryptMessage;
 386             fnTableA->DecryptMessage = inFnTableW->DecryptMessage;
 387         }
 388     }
 389 }
 390
 391 static void _makeFnTableW(PSecurityFunctionTableW fnTableW,
 392  const PSecurityFunctionTableA inFnTableA,
 393  const PSecurityFunctionTableW inFnTableW)
 394 {
 395     if (fnTableW)
 396     {
 397         if (inFnTableW)
 398         {
 399             /* The size of the version 1 table is based on platform sdk's
 400              * sspi.h, though the sample ssp also provided with platform sdk
 401              * implies only functions through QuerySecurityPackageInfoA are
 402              * implemented (yikes)
 403              */
 404             size_t tableSize = inFnTableW->dwVersion == 1 ?
 405              (LPBYTE)&inFnTableW->SetContextAttributesW -
 406              (LPBYTE)inFnTableW : sizeof(SecurityFunctionTableW);
 407
 408             memcpy(fnTableW, inFnTableW, tableSize);
 409             /* override this, since we can do it internally anyway */
 410             fnTableW->QuerySecurityPackageInfoW =
 411              QuerySecurityPackageInfoW;
 412         }
 413         else if (inFnTableA)
 414         {
 415             /* functions with thunks */
 416             if (inFnTableA->AcquireCredentialsHandleA)
 417                 fnTableW->AcquireCredentialsHandleW =
 418                  thunk_AcquireCredentialsHandleW;
 419             if (inFnTableA->InitializeSecurityContextA)
 420                 fnTableW->InitializeSecurityContextW =
 421                  thunk_InitializeSecurityContextW;
 422             if (inFnTableA->ImportSecurityContextA)
 423                 fnTableW->ImportSecurityContextW =
 424                  thunk_ImportSecurityContextW;
 425             if (inFnTableA->AddCredentialsA)
 426                 fnTableW->AddCredentialsW =
 427                  thunk_AddCredentialsW;
 428             if (inFnTableA->QueryCredentialsAttributesA)
 429                 fnTableW->QueryCredentialsAttributesW =
 430                  thunk_QueryCredentialsAttributesW;
 431             if (inFnTableA->QueryContextAttributesA)
 432                 fnTableW->QueryContextAttributesW =
 433                  thunk_QueryContextAttributesW;
 434             if (inFnTableA->SetContextAttributesA)
 435                 fnTableW->SetContextAttributesW =
 436                  thunk_SetContextAttributesW;
 437             /* this can't be thunked, there's no extra param to know which
 438              * package to forward to */
 439             fnTableW->EnumerateSecurityPackagesW = NULL;
 440             /* functions with no thunks needed */
 441             fnTableW->AcceptSecurityContext = inFnTableA->AcceptSecurityContext;
 442             fnTableW->CompleteAuthToken = inFnTableA->CompleteAuthToken;
 443             fnTableW->DeleteSecurityContext = inFnTableA->DeleteSecurityContext;
 444             fnTableW->ImpersonateSecurityContext =
 445              inFnTableA->ImpersonateSecurityContext;
 446             fnTableW->RevertSecurityContext = inFnTableA->RevertSecurityContext;
 447             fnTableW->MakeSignature = inFnTableA->MakeSignature;
 448             fnTableW->VerifySignature = inFnTableA->VerifySignature;
 449             fnTableW->FreeContextBuffer = inFnTableA->FreeContextBuffer;
 450             fnTableW->QuerySecurityPackageInfoW =
 451              QuerySecurityPackageInfoW;
 452             fnTableW->ExportSecurityContext =
 453              inFnTableA->ExportSecurityContext;
 454             fnTableW->QuerySecurityContextToken =
 455              inFnTableA->QuerySecurityContextToken;
 456             fnTableW->EncryptMessage = inFnTableA->EncryptMessage;
 457             fnTableW->DecryptMessage = inFnTableA->DecryptMessage;
 458         }
 459     }
 460 }
 461
 462 static void _copyPackageInfo(PSecPkgInfoW info, const SecPkgInfoA *inInfoA,
 463  const SecPkgInfoW *inInfoW)
 464 {
 465     if (info && (inInfoA || inInfoW))
 466     {
 467         /* odd, I know, but up until Name and Comment the structures are
 468          * identical
 469          */
 470         memcpy(info, inInfoW ? inInfoW : (PSecPkgInfoW)inInfoA, sizeof(*info));
 471         if (inInfoW)
 472         {
 473             info->Name = SECUR32_strdupW(inInfoW->Name);
 474             info->Comment = SECUR32_strdupW(inInfoW->Comment);
 475         }
 476         else
 477         {
 478             info->Name = SECUR32_AllocWideFromMultiByte(inInfoA->Name);
 479             info->Comment = SECUR32_AllocWideFromMultiByte(inInfoA->Comment);
 480         }
 481     }
 482 }
 483
 484 SecureProvider *SECUR32_addProvider(PSecurityFunctionTableA fnTableA,
 485  PSecurityFunctionTableW fnTableW, PWSTR moduleName)
 486 {
 487     SecureProvider *ret;
 488
 489     EnterCriticalSection(&cs);
 490     providerTable = _resizeProviderTable(providerTable,
 491      providerTable ? providerTable->numProviders + 1 : 1);
 492     if (providerTable)
 493     {
 494         ret = &providerTable->table[providerTable->numProviders++];
 495         ret->lib = NULL;
 496         if (fnTableA || fnTableW)
 497         {
 498             _makeFnTableA(&ret->fnTableA, fnTableA, fnTableW);
 499             _makeFnTableW(&ret->fnTableW, fnTableA, fnTableW);
 500             ret->loaded = TRUE;
 501         }
 502         else
 503         {
 504             ret->moduleName = SECUR32_strdupW(moduleName);
 505             ret->loaded = FALSE;
 506         }
 507     }
 508     else
 509         ret = NULL;
 510     LeaveCriticalSection(&cs);
 511     return ret;
 512 }
 513
 514 void SECUR32_addPackages(SecureProvider *provider, ULONG toAdd,
 515  const SecPkgInfoA *infoA, const SecPkgInfoW *infoW)
 516 {
 517     assert(provider);
 518     assert(infoA || infoW);
 519
 520     EnterCriticalSection(&cs);
 521     packageTable = _resizePackageTable(packageTable,
 522      packageTable ? packageTable->numPackages + toAdd : toAdd);
 523     if (packageTable)
 524     {
 525         ULONG i;
 526
 527         for (i = 0; i < toAdd; i++)
 528         {
 529             SecurePackage *package =
 530              &packageTable->table[packageTable->numPackages + i];
 531
 532             package->provider = provider;
 533             _copyPackageInfo(&package->infoW,
 534              infoA ? &infoA[i] : NULL,
 535              infoW ? &infoW[i] : NULL);
 536         }
 537         packageTable->numPackages += toAdd;
 538     }
 539     LeaveCriticalSection(&cs);
 540 }
 541
 542 static void _tryLoadProvider(PWSTR moduleName)
 543 {
 544     HMODULE lib = LoadLibraryW(moduleName);
 545
 546     if (lib)
 547     {
 548         INIT_SECURITY_INTERFACE_W pInitSecurityInterfaceW =
 549          (INIT_SECURITY_INTERFACE_W)GetProcAddress(lib,
 550          SECURITY_ENTRYPOINT_ANSIW);
 551         INIT_SECURITY_INTERFACE_A pInitSecurityInterfaceA =
 552          (INIT_SECURITY_INTERFACE_A)GetProcAddress(lib,
 553          SECURITY_ENTRYPOINT_ANSIA);
 554
 555         TRACE("loaded %s, InitSecurityInterfaceA is %p, InitSecurityInterfaceW is %p\n",
 556          debugstr_w(moduleName), pInitSecurityInterfaceA,
 557          pInitSecurityInterfaceW);
 558         if (pInitSecurityInterfaceW || pInitSecurityInterfaceA)
 559         {
 560             PSecurityFunctionTableA fnTableA = NULL;
 561             PSecurityFunctionTableW fnTableW = NULL;
 562             ULONG toAdd = 0;
 563             PSecPkgInfoA infoA = NULL;
 564             PSecPkgInfoW infoW = NULL;
 565             SECURITY_STATUS ret = SEC_E_OK;
 566
 567             if (pInitSecurityInterfaceA)
 568                 fnTableA = pInitSecurityInterfaceA();
 569             if (pInitSecurityInterfaceW)
 570                 fnTableW = pInitSecurityInterfaceW();
 571             if (fnTableW && fnTableW->EnumerateSecurityPackagesW)
 572                 ret = fnTableW->EnumerateSecurityPackagesW(&toAdd, &infoW);
 573             else if (fnTableA && fnTableA->EnumerateSecurityPackagesA)
 574                 ret = fnTableA->EnumerateSecurityPackagesA(&toAdd, &infoA);
 575             if (ret == SEC_E_OK && toAdd > 0 && (infoW || infoA))
 576             {
 577                 SecureProvider *provider = SECUR32_addProvider(NULL, NULL,
 578                  moduleName);
 579
 580                 if (provider)
 581                     SECUR32_addPackages(provider, toAdd, infoA, infoW);
 582                 if (infoW)
 583                     fnTableW->FreeContextBuffer(infoW);
 584                 else
 585                     fnTableA->FreeContextBuffer(infoA);
 586             }
 587         }
 588         FreeLibrary(lib);
 589     }
 590     else
 591         WARN("failed to load %s\n", debugstr_w(moduleName));
 592 }
 593
 594 static const WCHAR securityProvidersKeyW[] = {
 595  'S','Y','S','T','E','M','\\','C','u','r','r','e','n','t','C','o','n','t','r',
 596  'o','l','S','e','t','\\','C','o','n','t','r','o','l','\\','S','e','c','u','r',
 597  'i','t','y','P','r','o','v','i','d','e','r','s','\0'
 598  };
 599 static const WCHAR securityProvidersW[] = {
 600  'S','e','c','u','r','i','t','y','P','r','o','v','i','d','e','r','s',0
 601  };
 602
 603 static void SECUR32_initializeProviders(void)
 604 {
 605     HKEY key;
 606     long apiRet;
 607
 608     TRACE("\n");
 609     InitializeCriticalSection(&cs);
 610     /* First load built-in providers */
 611     SECUR32_initSchannelSP();
 612     /* Now load providers from registry */
 613     apiRet = RegOpenKeyExW(HKEY_LOCAL_MACHINE, securityProvidersKeyW, 0,
 614      KEY_READ, &key);
 615     if (apiRet == ERROR_SUCCESS)
 616     {
 617         WCHAR securityPkgNames[MAX_PATH]; /* arbitrary len */
 618         DWORD size = sizeof(securityPkgNames) / sizeof(WCHAR), type;
 619
 620         apiRet = RegQueryValueExW(key, securityProvidersW, NULL, &type,
 621          (PBYTE)securityPkgNames, &size);
 622         if (apiRet == ERROR_SUCCESS && type == REG_SZ)
 623         {
 624             WCHAR *ptr;
 625
 626             for (ptr = securityPkgNames;
 627              ptr < (PWSTR)((PBYTE)securityPkgNames + size); )
 628             {
 629                 WCHAR *comma;
 630
 631                 for (comma = ptr; *comma && *comma != ','; comma++)
 632                     ;
 633                 if (*comma == ',')
 634                     *comma = '\0';
 635                 for (; *ptr && isspace(*ptr) && ptr < securityPkgNames + size;
 636                  ptr++)
 637                     ;
 638                 if (*ptr)
 639                     _tryLoadProvider(ptr);
 640                 ptr += lstrlenW(ptr) + 1;
 641             }
 642         }
 643         RegCloseKey(key);
 644     }
 645 }
 646
 647 SecurePackage *SECUR32_findPackageW(PWSTR packageName)
 648 {
 649     SecurePackage *ret = NULL;
 650
 651     if (packageTable && packageName)
 652     {
 653         DWORD i;
 654
 655         for (i = 0, ret = NULL; !ret && i < packageTable->numPackages; i++)
 656             if (!lstrcmpiW(packageTable->table[i].infoW.Name, packageName))
 657                 ret = &packageTable->table[i];
 658         if (ret && ret->provider && !ret->provider->loaded)
 659         {
 660             ret->provider->lib = LoadLibraryW(ret->provider->moduleName);
 661             if (ret->provider->lib)
 662             {
 663                 INIT_SECURITY_INTERFACE_W pInitSecurityInterfaceW =
 664                  (INIT_SECURITY_INTERFACE_W)GetProcAddress(ret->provider->lib,
 665                  SECURITY_ENTRYPOINT_ANSIW);
 666                 INIT_SECURITY_INTERFACE_A pInitSecurityInterfaceA =
 667                  (INIT_SECURITY_INTERFACE_A)GetProcAddress(ret->provider->lib,
 668                  SECURITY_ENTRYPOINT_ANSIA);
 669                 PSecurityFunctionTableA fnTableA = NULL;
 670                 PSecurityFunctionTableW fnTableW = NULL;
 671
 672                 if (pInitSecurityInterfaceA)
 673                     fnTableA = pInitSecurityInterfaceA();
 674                 if (pInitSecurityInterfaceW)
 675                     fnTableW = pInitSecurityInterfaceW();
 676                 _makeFnTableA(&ret->provider->fnTableA, fnTableA, fnTableW);
 677                 _makeFnTableW(&ret->provider->fnTableW, fnTableA, fnTableW);
 678                 ret->provider->loaded = TRUE;
 679             }
 680             else
 681                 ret = NULL;
 682         }
 683     }
 684     return ret;
 685 }
 686
 687 SecurePackage *SECUR32_findPackageA(PSTR packageName)
 688 {
 689     SecurePackage *ret;
 690
 691     if (packageTable && packageName)
 692     {
 693         UNICODE_STRING package;
 694
 695         RtlCreateUnicodeStringFromAsciiz(&package, packageName);
 696         ret = SECUR32_findPackageW(package.Buffer);
 697         RtlFreeUnicodeString(&package);
 698     }
 699     else
 700         ret = NULL;
 701     return ret;
 702 }
 703
 704 static void SECUR32_freeProviders(void)
 705 {
 706     DWORD i;
 707
 708     TRACE("\n");
 709     EnterCriticalSection(&cs);
 710     if (packageTable)
 711     {
 712         for (i = 0; i < packageTable->numPackages; i++)
 713         {
 714             SECUR32_FREE(packageTable->table[i].infoW.Name);
 715             SECUR32_FREE(packageTable->table[i].infoW.Comment);
 716         }
 717         HeapFree(GetProcessHeap(), 0, packageTable);
 718         packageTable = NULL;
 719     }
 720     if (providerTable)
 721     {
 722         for (i = 0; i < providerTable->numProviders; i++)
 723         {
 724             if (providerTable->table[i].moduleName)
 725                 SECUR32_FREE(providerTable->table[i].moduleName);
 726             if (providerTable->table[i].lib)
 727                 FreeLibrary(providerTable->table[i].lib);
 728         }
 729         HeapFree(GetProcessHeap(), 0, providerTable);
 730         providerTable = NULL;
 731     }
 732     LeaveCriticalSection(&cs);
 733     DeleteCriticalSection(&cs);
 734 }
 735
 736 /***********************************************************************
 737  *              FreeContextBuffer (SECUR32.@)
 738  *
 739  * Doh--if pv was allocated by a crypto package, this may not be correct.
 740  * The sample ssp seems to use LocalAlloc/LocalFee, but there doesn't seem to
 741  * be any guarantee, nor is there an alloc function in secur32.
 742  */
 743 SECURITY_STATUS WINAPI FreeContextBuffer(PVOID pv)
 744 {
 745     SECURITY_STATUS ret;
 746
 747     /* as it turns out, SECURITY_STATUSes are actually HRESULTS */
 748     if (pv)
 749     {
 750         if (SECUR32_FREE(pv) == NULL)
 751             ret = SEC_E_OK;
 752         else
 753             ret = HRESULT_FROM_WIN32(GetLastError());
 754     }
 755     else
 756         ret = HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER);
 757     return ret;
 758 }
 759
 760 /***********************************************************************
 761  *              EnumerateSecurityPackagesW (SECUR32.@)
 762  */
 763 SECURITY_STATUS WINAPI EnumerateSecurityPackagesW(PULONG pcPackages,
 764  PSecPkgInfoW *ppPackageInfo)
 765 {
 766     SECURITY_STATUS ret = SEC_E_OK;
 767
 768     /* windows just crashes if pcPackages or ppPackageInfo is NULL, so will I */
 769     *pcPackages = 0;
 770     EnterCriticalSection(&cs);
 771     if (packageTable)
 772     {
 773         ULONG i;
 774         size_t bytesNeeded;
 775
 776         bytesNeeded = packageTable->numPackages * sizeof(SecPkgInfoW);
 777         for (i = 0; i < packageTable->numPackages; i++)
 778         {
 779             if (packageTable->table[i].infoW.Name)
 780                 bytesNeeded +=
 781                  (lstrlenW(packageTable->table[i].infoW.Name) + 1) *
 782                  sizeof(WCHAR);
 783             if (packageTable->table[i].infoW.Comment)
 784                 bytesNeeded +=
 785                  (lstrlenW(packageTable->table[i].infoW.Comment) + 1) *
 786                  sizeof(WCHAR);
 787         }
 788         if (bytesNeeded)
 789         {
 790             *ppPackageInfo = (PSecPkgInfoW)SECUR32_ALLOC(bytesNeeded);
 791             if (*ppPackageInfo)
 792             {
 793                 PWSTR nextString;
 794
 795                 *pcPackages = packageTable->numPackages;
 796                 nextString = (PWSTR)((PBYTE)*ppPackageInfo +
 797                  packageTable->numPackages * sizeof(SecPkgInfoW));
 798                 for (i = 0; i < packageTable->numPackages; i++)
 799                 {
 800                     PSecPkgInfoW pkgInfo = *ppPackageInfo + i;
 801
 802                     memcpy(pkgInfo, &packageTable->table[i].infoW,
 803                      sizeof(SecPkgInfoW));
 804                     if (packageTable->table[i].infoW.Name)
 805                     {
 806                         pkgInfo->Name = nextString;
 807                         lstrcpyW(nextString, packageTable->table[i].infoW.Name);
 808                         nextString += lstrlenW(nextString) + 1;
 809                     }
 810                     else
 811                         pkgInfo->Name = NULL;
 812                     if (packageTable->table[i].infoW.Comment)
 813                     {
 814                         pkgInfo->Comment = nextString;
 815                         lstrcpyW(nextString,
 816                          packageTable->table[i].infoW.Comment);
 817                         nextString += lstrlenW(nextString) + 1;
 818                     }
 819                     else
 820                         pkgInfo->Comment = NULL;
 821                 }
 822             }
 823             else
 824                 ret = SEC_E_INSUFFICIENT_MEMORY;
 825         }
 826     }
 827     LeaveCriticalSection(&cs);
 828     return ret;
 829 }
 830
 831 /* Converts info (which is assumed to be an array of cPackages SecPkgInfoW
 832  * structures) into an array of SecPkgInfoA structures, which it returns.
 833  */
 834 static PSecPkgInfoA thunk_PSecPkgInfoWToA(ULONG cPackages,
 835  const PSecPkgInfoW info)
 836 {
 837     PSecPkgInfoA ret;
 838
 839     if (info)
 840     {
 841         size_t bytesNeeded = cPackages * sizeof(SecPkgInfoA);
 842         ULONG i;
 843
 844         for (i = 0; i < cPackages; i++)
 845         {
 846             if (info[i].Name)
 847                 bytesNeeded += WideCharToMultiByte(CP_ACP, 0, info[i].Name,
 848                  -1, NULL, 0, NULL, NULL);
 849             if (info[i].Comment)
 850                 bytesNeeded += WideCharToMultiByte(CP_ACP, 0, info[i].Comment,
 851                  -1, NULL, 0, NULL, NULL);
 852         }
 853         ret = (PSecPkgInfoA)SECUR32_ALLOC(bytesNeeded);
 854         if (ret)
 855         {
 856             PSTR nextString;
 857
 858             nextString = (PSTR)((PBYTE)ret + cPackages * sizeof(SecPkgInfoA));
 859             for (i = 0; i < cPackages; i++)
 860             {
 861                 PSecPkgInfoA pkgInfo = ret + i;
 862                 int bytes;
 863
 864                 memcpy(pkgInfo, &info[i], sizeof(SecPkgInfoA));
 865                 if (info[i].Name)
 866                 {
 867                     pkgInfo->Name = nextString;
 868                     /* just repeat back to WideCharToMultiByte how many bytes
 869                      * it requires, since we asked it earlier
 870                      */
 871                     bytes = WideCharToMultiByte(CP_ACP, 0, info[i].Name, -1,
 872                      NULL, 0, NULL, NULL);
 873                     WideCharToMultiByte(CP_ACP, 0, info[i].Name, -1,
 874                      pkgInfo->Name, bytes, NULL, NULL);
 875                     nextString += lstrlenA(nextString) + 1;
 876                 }
 877                 else
 878                     pkgInfo->Name = NULL;
 879                 if (info[i].Comment)
 880                 {
 881                     pkgInfo->Comment = nextString;
 882                     /* just repeat back to WideCharToMultiByte how many bytes
 883                      * it requires, since we asked it earlier
 884                      */
 885                     bytes = WideCharToMultiByte(CP_ACP, 0, info[i].Comment, -1,
 886                      NULL, 0, NULL, NULL);
 887                     WideCharToMultiByte(CP_ACP, 0, info[i].Comment, -1,
 888                      pkgInfo->Comment, bytes, NULL, NULL);
 889                     nextString += lstrlenA(nextString) + 1;
 890                 }
 891                 else
 892                     pkgInfo->Comment = NULL;
 893             }
 894         }
 895     }
 896     else
 897         ret = NULL;
 898     return ret;
 899 }
 900
 901 /***********************************************************************
 902  *              EnumerateSecurityPackagesA (SECUR32.@)
 903  */
 904 SECURITY_STATUS WINAPI EnumerateSecurityPackagesA(PULONG pcPackages,
 905  PSecPkgInfoA *ppPackageInfo)
 906 {
 907     SECURITY_STATUS ret;
 908     PSecPkgInfoW info;
 909
 910     ret = EnumerateSecurityPackagesW(pcPackages, &info);
 911     if (ret == SEC_E_OK && *pcPackages && info)
 912     {
 913         *ppPackageInfo = thunk_PSecPkgInfoWToA(*pcPackages, info);
 914         if (*pcPackages && !*ppPackageInfo)
 915         {
 916             *pcPackages = 0;
 917             ret = SEC_E_INSUFFICIENT_MEMORY;
 918         }
 919         FreeContextBuffer(info);
 920     }
 921     return ret;
 922 }
 923
 924 /***********************************************************************
 925  *              GetComputerObjectNameA (SECUR32.@)
 926  */
 927 BOOLEAN WINAPI GetComputerObjectNameA(
 928   EXTENDED_NAME_FORMAT NameFormat, LPSTR lpNameBuffer, PULONG nSize)
 929 {
 930     FIXME("%d %p %p\n", NameFormat, lpNameBuffer, nSize);
 931     return FALSE;
 932 }
 933
 934 /***********************************************************************
 935  *              GetComputerObjectNameW (SECUR32.@)
 936  */
 937 BOOLEAN WINAPI GetComputerObjectNameW(
 938   EXTENDED_NAME_FORMAT NameFormat, LPWSTR lpNameBuffer, PULONG nSize)
 939 {
 940     FIXME("%d %p %p\n", NameFormat, lpNameBuffer, nSize);
 941     return FALSE;
 942 }
 943
 944 BOOLEAN WINAPI GetUserNameExA(
 945   EXTENDED_NAME_FORMAT NameFormat, LPSTR lpNameBuffer, PULONG nSize)
 946 {
 947     FIXME("%d %p %p\n", NameFormat, lpNameBuffer, nSize);
 948     return FALSE;
 949 }
 950
 951 BOOLEAN WINAPI GetUserNameExW(
 952   EXTENDED_NAME_FORMAT NameFormat, LPWSTR lpNameBuffer, PULONG nSize)
 953 {
 954     FIXME("%d %p %p\n", NameFormat, lpNameBuffer, nSize);
 955     return FALSE;
 956 }
 957
 958 NTSTATUS WINAPI LsaCallAuthenticationPackage(
 959   HANDLE LsaHandle, ULONG AuthenticationPackage, PVOID ProtocolSubmitBuffer,
 960   ULONG SubmitBufferLength, PVOID* ProtocolReturnBuffer, PULONG ReturnBufferLength,
 961   NTSTATUS *ProtocolStatus)
 962 {
 963     FIXME("%p %ld %p %ld %p %p %p\n", LsaHandle, AuthenticationPackage,
 964           ProtocolSubmitBuffer, SubmitBufferLength, ProtocolReturnBuffer,
 965           ReturnBufferLength, ProtocolStatus);
 966     return 0;
 967 }
 968
 969 NTSTATUS WINAPI LsaConnectUntrusted(PHANDLE LsaHandle)
 970 {
 971     FIXME("%p\n", LsaHandle);
 972     return 0;
 973 }
 974
 975 NTSTATUS WINAPI LsaDeregisterLogonProcess(HANDLE LsaHandle)
 976 {
 977     FIXME("%p\n", LsaHandle);
 978     return 0;
 979 }
 980
 981 BOOLEAN WINAPI TranslateNameA(
 982   LPCSTR lpAccountName, EXTENDED_NAME_FORMAT AccountNameFormat,
 983   EXTENDED_NAME_FORMAT DesiredNameFormat, LPSTR lpTranslatedName,
 984   PULONG nSize)
 985 {
 986     FIXME("%p %d %d %p %p\n", lpAccountName, AccountNameFormat,
 987           DesiredNameFormat, lpTranslatedName, nSize);
 988     return FALSE;
 989 }
 990
 991 BOOLEAN WINAPI TranslateNameW(
 992   LPCWSTR lpAccountName, EXTENDED_NAME_FORMAT AccountNameFormat,
 993   EXTENDED_NAME_FORMAT DesiredNameFormat, LPWSTR lpTranslatedName,
 994   PULONG nSize)
 995 {
 996     FIXME("%p %d %d %p %p\n", lpAccountName, AccountNameFormat,
 997           DesiredNameFormat, lpTranslatedName, nSize);
 998     return FALSE;
 999 }
1000
1001 /***********************************************************************
1002  *              DllMain (SECUR32.0)
1003  */
1004 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1005 {
1006     if (fdwReason == DLL_PROCESS_ATTACH)
1007     {
1008         DisableThreadLibraryCalls(hinstDLL);
1009         SECUR32_initializeProviders();
1010     }
1011     else if (fdwReason == DLL_PROCESS_DETACH)
1012     {
1013         SECUR32_freeProviders();
1014     }
1015
1016     return TRUE;
1017 }