reactos/dll/win32/schannel/schannel_gnutls.c

   1 /*
   2  * GnuTLS-based implementation of the schannel (SSL/TLS) provider.
   3  *
   4  * Copyright 2005 Juan Lang
   5  * Copyright 2008 Henri Verbeet
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "precomp.h"
  23
  24 #include <wine/config.h>
  25 #include <wine/port.h>
  26 #include <strsafe.h>
  27
  28 #ifdef SONAME_LIBGNUTLS
  29 #include <gnutls/gnutls.h>
  30 #include <gnutls/crypto.h>
  31 #endif
  32
  33 #define __wine_dbch_secur32 __wine_dbch_schannel
  34
  35 #if defined(SONAME_LIBGNUTLS) && !defined(HAVE_SECURITY_SECURITY_H)
  36
  37 static void *libgnutls_handle;
  38 #if (_MSC_VER >= 1600)
  39 #define MAKE_FUNCPTR(f) static decltype(f) p##f
  40 #else
  41 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
  42 #endif
  43 MAKE_FUNCPTR(gnutls_alert_get);
  44 MAKE_FUNCPTR(gnutls_alert_get_name);
  45 MAKE_FUNCPTR(gnutls_certificate_allocate_credentials);
  46 MAKE_FUNCPTR(gnutls_certificate_free_credentials);
  47 MAKE_FUNCPTR(gnutls_certificate_get_peers);
  48 MAKE_FUNCPTR(gnutls_cipher_get);
  49 MAKE_FUNCPTR(gnutls_cipher_get_key_size);
  50 MAKE_FUNCPTR(gnutls_credentials_set);
  51 MAKE_FUNCPTR(gnutls_deinit);
  52 MAKE_FUNCPTR(gnutls_global_deinit);
  53 MAKE_FUNCPTR(gnutls_global_init);
  54 MAKE_FUNCPTR(gnutls_global_set_log_function);
  55 MAKE_FUNCPTR(gnutls_global_set_log_level);
  56 MAKE_FUNCPTR(gnutls_handshake);
  57 MAKE_FUNCPTR(gnutls_init);
  58 MAKE_FUNCPTR(gnutls_kx_get);
  59 MAKE_FUNCPTR(gnutls_mac_get);
  60 MAKE_FUNCPTR(gnutls_mac_get_key_size);
  61 MAKE_FUNCPTR(gnutls_perror);
  62 MAKE_FUNCPTR(gnutls_protocol_get_version);
  63 MAKE_FUNCPTR(gnutls_priority_set_direct);
  64 MAKE_FUNCPTR(gnutls_record_get_max_size);
  65 MAKE_FUNCPTR(gnutls_record_recv);
  66 MAKE_FUNCPTR(gnutls_record_send);
  67 MAKE_FUNCPTR(gnutls_server_name_set);
  68 MAKE_FUNCPTR(gnutls_transport_get_ptr);
  69 MAKE_FUNCPTR(gnutls_transport_set_errno);
  70 MAKE_FUNCPTR(gnutls_transport_set_ptr);
  71 MAKE_FUNCPTR(gnutls_transport_set_pull_function);
  72 MAKE_FUNCPTR(gnutls_transport_set_push_function);
  73 #undef MAKE_FUNCPTR
  74
  75
  76
  77 static ssize_t schan_pull_adapter(gnutls_transport_ptr_t transport,
  78                                       void *buff, size_t buff_len)
  79 {
  80     struct schan_transport *t = (struct schan_transport*)transport;
  81     gnutls_session_t s = (gnutls_session_t)schan_session_for_transport(t);
  82
  83     int ret = schan_pull(transport, buff, &buff_len);
  84     if (ret)
  85     {
  86         pgnutls_transport_set_errno(s, ret);
  87         return -1;
  88     }
  89
  90     return buff_len;
  91 }
  92
  93 static ssize_t schan_push_adapter(gnutls_transport_ptr_t transport,
  94                                       const void *buff, size_t buff_len)
  95 {
  96     struct schan_transport *t = (struct schan_transport*)transport;
  97     gnutls_session_t s = (gnutls_session_t)schan_session_for_transport(t);
  98
  99     int ret = schan_push(transport, buff, &buff_len);
 100     if (ret)
 101     {
 102         pgnutls_transport_set_errno(s, ret);
 103         return -1;
 104     }
 105
 106     return buff_len;
 107 }
 108
 109 static const struct {
 110     DWORD enable_flag;
 111     const char *gnutls_flag;
 112 } protocol_priority_flags[] = {
 113     {SP_PROT_TLS1_2_CLIENT, "VERS-TLS1.2"},
 114     {SP_PROT_TLS1_1_CLIENT, "VERS-TLS1.1"},
 115     {SP_PROT_TLS1_0_CLIENT, "VERS-TLS1.0"},
 116     {SP_PROT_SSL3_CLIENT,   "VERS-SSL3.0"}
 117     /* {SP_PROT_SSL2_CLIENT} is not supported by GnuTLS */
 118 };
 119
 120 DWORD schan_imp_enabled_protocols(void)
 121 {
 122     /* NOTE: No support for SSL 2.0 */
 123     return SP_PROT_SSL3_CLIENT | SP_PROT_TLS1_0_CLIENT | SP_PROT_TLS1_1_CLIENT | SP_PROT_TLS1_2_CLIENT;
 124 }
 125
 126 BOOL schan_imp_create_session(schan_imp_session *session, schan_credentials *cred)
 127 {
 128     gnutls_session_t *s = (gnutls_session_t*)session;
 129     char priority[64] = "NORMAL", *p;
 130     unsigned i;
 131
 132     int err = pgnutls_init(s, cred->credential_use == SECPKG_CRED_INBOUND ? GNUTLS_SERVER : GNUTLS_CLIENT);
 133     if (err != GNUTLS_E_SUCCESS)
 134     {
 135         pgnutls_perror(err);
 136         return FALSE;
 137     }
 138
 139     p = priority + strlen(priority);
 140     for(i=0; i < sizeof(protocol_priority_flags)/sizeof(*protocol_priority_flags); i++) {
 141         *p++ = ':';
 142         *p++ = (cred->enabled_protocols & protocol_priority_flags[i].enable_flag) ? '+' : '-';
 143         strcpy(p, protocol_priority_flags[i].gnutls_flag);
 144         p += strlen(p);
 145     }
 146
 147     TRACE("Using %s priority\n", debugstr_a(priority));
 148     err = pgnutls_priority_set_direct(*s, priority, NULL);
 149     if (err != GNUTLS_E_SUCCESS)
 150     {
 151         pgnutls_perror(err);
 152         pgnutls_deinit(*s);
 153         return FALSE;
 154     }
 155
 156     err = pgnutls_credentials_set(*s, GNUTLS_CRD_CERTIFICATE,
 157                                   (gnutls_certificate_credentials_t)cred->credentials);
 158     if (err != GNUTLS_E_SUCCESS)
 159     {
 160         pgnutls_perror(err);
 161         pgnutls_deinit(*s);
 162         return FALSE;
 163     }
 164
 165     pgnutls_transport_set_pull_function(*s, schan_pull_adapter);
 166     pgnutls_transport_set_push_function(*s, schan_push_adapter);
 167
 168     return TRUE;
 169 }
 170
 171 void schan_imp_dispose_session(schan_imp_session session)
 172 {
 173     gnutls_session_t s = (gnutls_session_t)session;
 174     pgnutls_deinit(s);
 175 }
 176
 177 void schan_imp_set_session_transport(schan_imp_session session,
 178                                      struct schan_transport *t)
 179 {
 180     gnutls_session_t s = (gnutls_session_t)session;
 181     pgnutls_transport_set_ptr(s, (gnutls_transport_ptr_t)t);
 182 }
 183
 184 void schan_imp_set_session_target(schan_imp_session session, const char *target)
 185 {
 186     gnutls_session_t s = (gnutls_session_t)session;
 187
 188     pgnutls_server_name_set( s, GNUTLS_NAME_DNS, target, strlen(target) );
 189 }
 190
 191 SECURITY_STATUS schan_imp_handshake(schan_imp_session session)
 192 {
 193     gnutls_session_t s = (gnutls_session_t)session;
 194     int err;
 195
 196     while(1) {
 197         err = pgnutls_handshake(s);
 198         switch(err) {
 199         case GNUTLS_E_SUCCESS:
 200             TRACE("Handshake completed\n");
 201             return SEC_E_OK;
 202
 203         case GNUTLS_E_AGAIN:
 204             TRACE("Continue...\n");
 205             return SEC_I_CONTINUE_NEEDED;
 206
 207         case GNUTLS_E_WARNING_ALERT_RECEIVED:
 208         {
 209             gnutls_alert_description_t alert = pgnutls_alert_get(s);
 210
 211             WARN("WARNING ALERT: %d %s\n", alert, pgnutls_alert_get_name(alert));
 212
 213             switch(alert) {
 214             case GNUTLS_A_UNRECOGNIZED_NAME:
 215                 TRACE("Ignoring\n");
 216                 continue;
 217             default:
 218                 return SEC_E_INTERNAL_ERROR;
 219             }
 220         }
 221
 222         case GNUTLS_E_FATAL_ALERT_RECEIVED:
 223         {
 224             gnutls_alert_description_t alert = pgnutls_alert_get(s);
 225             WARN("FATAL ALERT: %d %s\n", alert, pgnutls_alert_get_name(alert));
 226             return SEC_E_INTERNAL_ERROR;
 227         }
 228
 229         default:
 230             pgnutls_perror(err);
 231             return SEC_E_INTERNAL_ERROR;
 232         }
 233     }
 234
 235     /* Never reached */
 236     return SEC_E_OK;
 237 }
 238
 239 static unsigned int schannel_get_cipher_block_size(gnutls_cipher_algorithm_t cipher)
 240 {
 241     const struct
 242     {
 243         gnutls_cipher_algorithm_t cipher;
 244         unsigned int block_size;
 245     }
 246     algorithms[] =
 247     {
 248         {GNUTLS_CIPHER_3DES_CBC, 8},
 249         {GNUTLS_CIPHER_AES_128_CBC, 16},
 250         {GNUTLS_CIPHER_AES_256_CBC, 16},
 251         {GNUTLS_CIPHER_ARCFOUR_128, 1},
 252         {GNUTLS_CIPHER_ARCFOUR_40, 1},
 253         {GNUTLS_CIPHER_DES_CBC, 8},
 254         {GNUTLS_CIPHER_NULL, 1},
 255         {GNUTLS_CIPHER_RC2_40_CBC, 8},
 256     };
 257     unsigned int i;
 258
 259     for (i = 0; i < sizeof(algorithms) / sizeof(*algorithms); ++i)
 260     {
 261         if (algorithms[i].cipher == cipher)
 262             return algorithms[i].block_size;
 263     }
 264
 265     FIXME("Unknown cipher %#x, returning 1\n", cipher);
 266
 267     return 1;
 268 }
 269
 270 static DWORD schannel_get_protocol(gnutls_protocol_t proto)
 271 {
 272     /* FIXME: currently schannel only implements client connections, but
 273      * there's no reason it couldn't be used for servers as well.  The
 274      * context doesn't tell us which it is, so assume client for now.
 275      */
 276     switch (proto)
 277     {
 278     case GNUTLS_SSL3: return SP_PROT_SSL3_CLIENT;
 279     case GNUTLS_TLS1_0: return SP_PROT_TLS1_0_CLIENT;
 280     case GNUTLS_TLS1_1: return SP_PROT_TLS1_1_CLIENT;
 281     case GNUTLS_TLS1_2: return SP_PROT_TLS1_2_CLIENT;
 282     default:
 283         FIXME("unknown protocol %d\n", proto);
 284         return 0;
 285     }
 286 }
 287
 288 static ALG_ID schannel_get_cipher_algid(gnutls_cipher_algorithm_t cipher)
 289 {
 290     switch (cipher)
 291     {
 292     case GNUTLS_CIPHER_UNKNOWN:
 293     case GNUTLS_CIPHER_NULL: return 0;
 294     case GNUTLS_CIPHER_ARCFOUR_40:
 295     case GNUTLS_CIPHER_ARCFOUR_128: return CALG_RC4;
 296     case GNUTLS_CIPHER_DES_CBC:
 297     case GNUTLS_CIPHER_3DES_CBC: return CALG_DES;
 298     case GNUTLS_CIPHER_AES_128_CBC:
 299     case GNUTLS_CIPHER_AES_256_CBC: return CALG_AES;
 300     case GNUTLS_CIPHER_RC2_40_CBC: return CALG_RC2;
 301     default:
 302         FIXME("unknown algorithm %d\n", cipher);
 303         return 0;
 304     }
 305 }
 306
 307 static ALG_ID schannel_get_mac_algid(gnutls_mac_algorithm_t mac)
 308 {
 309     switch (mac)
 310     {
 311     case GNUTLS_MAC_UNKNOWN:
 312     case GNUTLS_MAC_NULL: return 0;
 313     case GNUTLS_MAC_MD5: return CALG_MD5;
 314     case GNUTLS_MAC_SHA1:
 315     case GNUTLS_MAC_SHA256:
 316     case GNUTLS_MAC_SHA384:
 317     case GNUTLS_MAC_SHA512: return CALG_SHA;
 318     default:
 319         FIXME("unknown algorithm %d\n", mac);
 320         return 0;
 321     }
 322 }
 323
 324 static ALG_ID schannel_get_kx_algid(gnutls_kx_algorithm_t kx)
 325 {
 326     switch (kx)
 327     {
 328         case GNUTLS_KX_RSA: return CALG_RSA_KEYX;
 329         case GNUTLS_KX_DHE_DSS:
 330         case GNUTLS_KX_DHE_RSA: return CALG_DH_EPHEM;
 331     default:
 332         FIXME("unknown algorithm %d\n", kx);
 333         return 0;
 334     }
 335 }
 336
 337 unsigned int schan_imp_get_session_cipher_block_size(schan_imp_session session)
 338 {
 339     gnutls_session_t s = (gnutls_session_t)session;
 340     gnutls_cipher_algorithm_t cipher = pgnutls_cipher_get(s);
 341     return schannel_get_cipher_block_size(cipher);
 342 }
 343
 344 unsigned int schan_imp_get_max_message_size(schan_imp_session session)
 345 {
 346     return pgnutls_record_get_max_size((gnutls_session_t)session);
 347 }
 348
 349 SECURITY_STATUS schan_imp_get_connection_info(schan_imp_session session,
 350                                               SecPkgContext_ConnectionInfo *info)
 351 {
 352     gnutls_session_t s = (gnutls_session_t)session;
 353     gnutls_protocol_t proto = pgnutls_protocol_get_version(s);
 354     gnutls_cipher_algorithm_t alg = pgnutls_cipher_get(s);
 355     gnutls_mac_algorithm_t mac = pgnutls_mac_get(s);
 356     gnutls_kx_algorithm_t kx = pgnutls_kx_get(s);
 357
 358     info->dwProtocol = schannel_get_protocol(proto);
 359     info->aiCipher = schannel_get_cipher_algid(alg);
 360     info->dwCipherStrength = pgnutls_cipher_get_key_size(alg) * 8;
 361     info->aiHash = schannel_get_mac_algid(mac);
 362     info->dwHashStrength = pgnutls_mac_get_key_size(mac) * 8;
 363     info->aiExch = schannel_get_kx_algid(kx);
 364     /* FIXME: info->dwExchStrength? */
 365     info->dwExchStrength = 0;
 366     return SEC_E_OK;
 367 }
 368
 369 SECURITY_STATUS schan_imp_get_session_peer_certificate(schan_imp_session session, HCERTSTORE store,
 370                                                        PCCERT_CONTEXT *ret)
 371 {
 372     gnutls_session_t s = (gnutls_session_t)session;
 373     PCCERT_CONTEXT cert = NULL;
 374     const gnutls_datum_t *datum;
 375     unsigned list_size, i;
 376     BOOL res;
 377
 378     datum = pgnutls_certificate_get_peers(s, &list_size);
 379     if(!datum)
 380         return SEC_E_INTERNAL_ERROR;
 381
 382     for(i = 0; i < list_size; i++) {
 383         res = CertAddEncodedCertificateToStore(store, X509_ASN_ENCODING, datum[i].data, datum[i].size,
 384                 CERT_STORE_ADD_REPLACE_EXISTING, i ? NULL : &cert);
 385         if(!res) {
 386             if(i)
 387                 CertFreeCertificateContext(cert);
 388             return GetLastError();
 389         }
 390     }
 391
 392     *ret = cert;
 393     return SEC_E_OK;
 394 }
 395
 396 SECURITY_STATUS schan_imp_send(schan_imp_session session, const void *buffer,
 397                                SIZE_T *length)
 398 {
 399     gnutls_session_t s = (gnutls_session_t)session;
 400     ssize_t ret;
 401
 402 again:
 403     ret = pgnutls_record_send(s, buffer, *length);
 404
 405     if (ret >= 0)
 406         *length = ret;
 407     else if (ret == GNUTLS_E_AGAIN)
 408     {
 409         struct schan_transport *t = (struct schan_transport *)pgnutls_transport_get_ptr(s);
 410         SIZE_T count = 0;
 411
 412         if (schan_get_buffer(t, &t->out, &count))
 413             goto again;
 414
 415         return SEC_I_CONTINUE_NEEDED;
 416     }
 417     else
 418     {
 419         pgnutls_perror(ret);
 420         return SEC_E_INTERNAL_ERROR;
 421     }
 422
 423     return SEC_E_OK;
 424 }
 425
 426 SECURITY_STATUS schan_imp_recv(schan_imp_session session, void *buffer,
 427                                SIZE_T *length)
 428 {
 429     gnutls_session_t s = (gnutls_session_t)session;
 430     ssize_t ret;
 431
 432 again:
 433     ret = pgnutls_record_recv(s, buffer, *length);
 434
 435     if (ret >= 0)
 436         *length = ret;
 437     else if (ret == GNUTLS_E_AGAIN)
 438     {
 439         struct schan_transport *t = (struct schan_transport *)pgnutls_transport_get_ptr(s);
 440         SIZE_T count = 0;
 441
 442         if (schan_get_buffer(t, &t->in, &count))
 443             goto again;
 444
 445         return SEC_I_CONTINUE_NEEDED;
 446     }
 447     else
 448     {
 449         pgnutls_perror(ret);
 450         return SEC_E_INTERNAL_ERROR;
 451     }
 452
 453     return SEC_E_OK;
 454 }
 455
 456 BOOL schan_imp_allocate_certificate_credentials(schan_credentials *c)
 457 {
 458     int ret = pgnutls_certificate_allocate_credentials((gnutls_certificate_credentials_t*)&c->credentials);
 459     if (ret != GNUTLS_E_SUCCESS)
 460         pgnutls_perror(ret);
 461     return (ret == GNUTLS_E_SUCCESS);
 462 }
 463
 464 void schan_imp_free_certificate_credentials(schan_credentials *c)
 465 {
 466     pgnutls_certificate_free_credentials(c->credentials);
 467 }
 468
 469 static void schan_gnutls_log(int level, const char *msg)
 470 {
 471     TRACE("<%d> %s", level, msg);
 472 }
 473
 474 BOOL schan_imp_init(void)
 475 {
 476     int ret;
 477
 478 #ifndef __REACTOS__
 479     libgnutls_handle = wine_dlopen(SONAME_LIBGNUTLS, RTLD_NOW, NULL, 0);
 480     if (!libgnutls_handle)
 481     {
 482         WARN("Failed to load libgnutls.\n");
 483         return FALSE;
 484     }
 485
 486 #define LOAD_FUNCPTR(f) \
 487     if (!(p##f = wine_dlsym(libgnutls_handle, #f, NULL, 0))) \
 488     { \
 489         ERR("Failed to load %s\n", #f); \
 490         goto fail; \
 491     }
 492 #else
 493 /*
 494     static const WCHAR RosSchannelKey[] = L"Software\\ReactOS\\Schannel";
 495     static const WCHAR PathValue[] = L"GnuTLSPath";
 496     WCHAR Path[MAX_PATH];
 497     DWORD PathSize = sizeof(Path), ValueType;
 498     HKEY Key;
 499     DWORD Error;
 500
 501     Error = RegOpenKeyW(HKEY_LOCAL_MACHINE, RosSchannelKey, &Key);
 502     if(Error != ERROR_SUCCESS)
 503         return FALSE;
 504
 505     Error = RegQueryValueExW(Key, PathValue, NULL, &ValueType, (LPBYTE)Path, &PathSize);
 506     RegCloseKey(Key);
 507     if ((Error != ERROR_SUCCESS) || (ValueType != REG_SZ))
 508         return FALSE;
 509     wcscat(Path, L"\\");
 510     wcscat(Path, SONAME_LIBGNUTLS);
 511 */
 512     static const WCHAR Path[] = L"C:\\Reactos\\system32\\gnutls\\libgnutls-28.dll";
 513
 514     libgnutls_handle = LoadLibraryExW(Path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
 515     if (!libgnutls_handle)
 516     {
 517         ERR("Could not load %S.\n", Path);
 518         return FALSE;
 519     }
 520
 521 #define LOAD_FUNCPTR(f) \
 522     if (!(p##f = (void*)GetProcAddress(libgnutls_handle, #f))) \
 523     { \
 524         ERR("Failed to load %s\n", #f); \
 525         goto fail; \
 526     }
 527 #endif // __REACTOS__
 528
 529     LOAD_FUNCPTR(gnutls_alert_get)
 530     LOAD_FUNCPTR(gnutls_alert_get_name)
 531     LOAD_FUNCPTR(gnutls_certificate_allocate_credentials)
 532     LOAD_FUNCPTR(gnutls_certificate_free_credentials)
 533     LOAD_FUNCPTR(gnutls_certificate_get_peers)
 534     LOAD_FUNCPTR(gnutls_cipher_get)
 535     LOAD_FUNCPTR(gnutls_cipher_get_key_size)
 536     LOAD_FUNCPTR(gnutls_credentials_set)
 537     LOAD_FUNCPTR(gnutls_deinit)
 538     LOAD_FUNCPTR(gnutls_global_deinit)
 539     LOAD_FUNCPTR(gnutls_global_init)
 540     LOAD_FUNCPTR(gnutls_global_set_log_function)
 541     LOAD_FUNCPTR(gnutls_global_set_log_level)
 542     LOAD_FUNCPTR(gnutls_handshake)
 543     LOAD_FUNCPTR(gnutls_init)
 544     LOAD_FUNCPTR(gnutls_kx_get)
 545     LOAD_FUNCPTR(gnutls_mac_get)
 546     LOAD_FUNCPTR(gnutls_mac_get_key_size)
 547     LOAD_FUNCPTR(gnutls_perror)
 548     LOAD_FUNCPTR(gnutls_protocol_get_version)
 549     LOAD_FUNCPTR(gnutls_priority_set_direct)
 550     LOAD_FUNCPTR(gnutls_record_get_max_size);
 551     LOAD_FUNCPTR(gnutls_record_recv);
 552     LOAD_FUNCPTR(gnutls_record_send);
 553     LOAD_FUNCPTR(gnutls_server_name_set)
 554     LOAD_FUNCPTR(gnutls_transport_get_ptr)
 555     LOAD_FUNCPTR(gnutls_transport_set_errno)
 556     LOAD_FUNCPTR(gnutls_transport_set_ptr)
 557     LOAD_FUNCPTR(gnutls_transport_set_pull_function)
 558     LOAD_FUNCPTR(gnutls_transport_set_push_function)
 559 #undef LOAD_FUNCPTR
 560
 561     ret = pgnutls_global_init();
 562     if (ret != GNUTLS_E_SUCCESS)
 563     {
 564         pgnutls_perror(ret);
 565         goto fail;
 566     }
 567
 568     if (TRACE_ON(secur32))
 569     {
 570         pgnutls_global_set_log_level(4);
 571         pgnutls_global_set_log_function(schan_gnutls_log);
 572     }
 573
 574     return TRUE;
 575
 576 fail:
 577 #ifndef __REACTOS__
 578     wine_dlclose(libgnutls_handle, NULL, 0);
 579 #else
 580     FreeLibrary(libgnutls_handle);
 581 #endif
 582     libgnutls_handle = NULL;
 583     return FALSE;
 584 }
 585
 586 void schan_imp_deinit(void)
 587 {
 588     pgnutls_global_deinit();
 589 #ifndef __REACTOS__
 590     wine_dlclose(libgnutls_handle, NULL, 0);
 591 #else
 592     FreeLibrary(libgnutls_handle);
 593 #endif
 594     libgnutls_handle = NULL;
 595 }
 596
 597 #endif /* SONAME_LIBGNUTLS && !HAVE_SECURITY_SECURITY_H */