dlls/wininet/netconnection.c

   1 /*
   2  * Wininet - networking layer. Uses unix sockets or OpenSSL.
   3  *
   4  * Copyright 2002 TransGaming Technologies Inc.
   5  *
   6  * David Hammerton
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #define NONAMELESSUNION
  27
  28 #if defined(__MINGW32__) || defined (_MSC_VER)
  29 #include <ws2tcpip.h>
  30 #endif
  31
  32 #include <sys/types.h>
  33 #ifdef HAVE_POLL_H
  34 #include <poll.h>
  35 #endif
  36 #ifdef HAVE_SYS_POLL_H
  37 # include <sys/poll.h>
  38 #endif
  39 #ifdef HAVE_SYS_TIME_H
  40 # include <sys/time.h>
  41 #endif
  42 #ifdef HAVE_SYS_SOCKET_H
  43 # include <sys/socket.h>
  44 #endif
  45 #ifdef HAVE_SYS_FILIO_H
  46 # include <sys/filio.h>
  47 #endif
  48 #ifdef HAVE_UNISTD_H
  49 # include <unistd.h>
  50 #endif
  51 #ifdef HAVE_SYS_IOCTL_H
  52 # include <sys/ioctl.h>
  53 #endif
  54 #include <time.h>
  55 #ifdef HAVE_NETDB_H
  56 # include <netdb.h>
  57 #endif
  58 #ifdef HAVE_NETINET_IN_H
  59 # include <netinet/in.h>
  60 #endif
  61 #ifdef HAVE_NETINET_TCP_H
  62 # include <netinet/tcp.h>
  63 #endif
  64 #ifdef HAVE_OPENSSL_SSL_H
  65 # include <openssl/ssl.h>
  66 # include <openssl/opensslv.h>
  67 #undef FAR
  68 #undef DSA
  69 #endif
  70
  71 #include <stdarg.h>
  72 #include <stdlib.h>
  73 #include <string.h>
  74 #include <stdio.h>
  75 #include <errno.h>
  76 #include <assert.h>
  77
  78 #include "wine/library.h"
  79 #include "windef.h"
  80 #include "winbase.h"
  81 #include "wininet.h"
  82 #include "winerror.h"
  83 #include "wincrypt.h"
  84
  85 #include "wine/debug.h"
  86 #include "internet.h"
  87
  88 /* To avoid conflicts with the Unix socket headers. we only need it for
  89  * the error codes anyway. */
  90 #define USE_WS_PREFIX
  91 #include "winsock2.h"
  92
  93 #define RESPONSE_TIMEOUT        30            /* FROM internet.c */
  94
  95
  96 WINE_DEFAULT_DEBUG_CHANNEL(wininet);
  97
  98 /* FIXME!!!!!!
  99  *    This should use winsock - To use winsock the functions will have to change a bit
 100  *        as they are designed for unix sockets.
 101  *    SSL stuff should use crypt32.dll
 102  */
 103
 104 #ifdef SONAME_LIBSSL
 105
 106 #include <openssl/err.h>
 107
 108 static void *OpenSSL_ssl_handle;
 109 static void *OpenSSL_crypto_handle;
 110
 111 #if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER > 0x10000000)
 112 static const SSL_METHOD *meth;
 113 #else
 114 static SSL_METHOD *meth;
 115 #endif
 116 static SSL_CTX *ctx;
 117 static int error_idx;
 118 static int conn_idx;
 119
 120 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
 121
 122 /* OpenSSL functions that we use */
 123 MAKE_FUNCPTR(SSL_library_init);
 124 MAKE_FUNCPTR(SSL_load_error_strings);
 125 MAKE_FUNCPTR(SSLv23_method);
 126 MAKE_FUNCPTR(SSL_CTX_free);
 127 MAKE_FUNCPTR(SSL_CTX_new);
 128 MAKE_FUNCPTR(SSL_new);
 129 MAKE_FUNCPTR(SSL_free);
 130 MAKE_FUNCPTR(SSL_set_fd);
 131 MAKE_FUNCPTR(SSL_connect);
 132 MAKE_FUNCPTR(SSL_shutdown);
 133 MAKE_FUNCPTR(SSL_write);
 134 MAKE_FUNCPTR(SSL_read);
 135 MAKE_FUNCPTR(SSL_pending);
 136 MAKE_FUNCPTR(SSL_get_error);
 137 MAKE_FUNCPTR(SSL_get_ex_new_index);
 138 MAKE_FUNCPTR(SSL_get_ex_data);
 139 MAKE_FUNCPTR(SSL_set_ex_data);
 140 MAKE_FUNCPTR(SSL_get_ex_data_X509_STORE_CTX_idx);
 141 MAKE_FUNCPTR(SSL_get_peer_certificate);
 142 MAKE_FUNCPTR(SSL_CTX_get_timeout);
 143 MAKE_FUNCPTR(SSL_CTX_set_timeout);
 144 MAKE_FUNCPTR(SSL_CTX_set_default_verify_paths);
 145 MAKE_FUNCPTR(SSL_CTX_set_verify);
 146 MAKE_FUNCPTR(SSL_get_current_cipher);
 147 MAKE_FUNCPTR(SSL_CIPHER_get_bits);
 148
 149 /* OpenSSL's libcrypto functions that we use */
 150 MAKE_FUNCPTR(BIO_new_fp);
 151 MAKE_FUNCPTR(CRYPTO_num_locks);
 152 MAKE_FUNCPTR(CRYPTO_set_id_callback);
 153 MAKE_FUNCPTR(CRYPTO_set_locking_callback);
 154 MAKE_FUNCPTR(ERR_free_strings);
 155 MAKE_FUNCPTR(ERR_get_error);
 156 MAKE_FUNCPTR(ERR_error_string);
 157 MAKE_FUNCPTR(X509_STORE_CTX_get_ex_data);
 158 MAKE_FUNCPTR(X509_STORE_CTX_get_chain);
 159 MAKE_FUNCPTR(i2d_X509);
 160 MAKE_FUNCPTR(sk_num);
 161 MAKE_FUNCPTR(sk_value);
 162 #undef MAKE_FUNCPTR
 163
 164 static CRITICAL_SECTION *ssl_locks;
 165 static unsigned int num_ssl_locks;
 166
 167 static unsigned long ssl_thread_id(void)
 168 {
 169     return GetCurrentThreadId();
 170 }
 171
 172 static void ssl_lock_callback(int mode, int type, const char *file, int line)
 173 {
 174     if (mode & CRYPTO_LOCK)
 175         EnterCriticalSection(&ssl_locks[type]);
 176     else
 177         LeaveCriticalSection(&ssl_locks[type]);
 178 }
 179
 180 static PCCERT_CONTEXT X509_to_cert_context(X509 *cert)
 181 {
 182     unsigned char* buffer,*p;
 183     INT len;
 184     BOOL malloced = FALSE;
 185     PCCERT_CONTEXT ret;
 186
 187     p = NULL;
 188     len = pi2d_X509(cert,&p);
 189     /*
 190      * SSL 0.9.7 and above malloc the buffer if it is null.
 191      * however earlier version do not and so we would need to alloc the buffer.
 192      *
 193      * see the i2d_X509 man page for more details.
 194      */
 195     if (!p)
 196     {
 197         buffer = heap_alloc(len);
 198         p = buffer;
 199         len = pi2d_X509(cert,&p);
 200     }
 201     else
 202     {
 203         buffer = p;
 204         malloced = TRUE;
 205     }
 206
 207     ret = CertCreateCertificateContext(X509_ASN_ENCODING,buffer,len);
 208
 209     if (malloced)
 210         free(buffer);
 211     else
 212         heap_free(buffer);
 213
 214     return ret;
 215 }
 216
 217 static DWORD netconn_verify_cert(netconn_t *conn, PCCERT_CONTEXT cert, HCERTSTORE store)
 218 {
 219     BOOL ret;
 220     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
 221     PCCERT_CHAIN_CONTEXT chain;
 222     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
 223     char *server_auth[] = { oid_server_auth };
 224     DWORD err = ERROR_SUCCESS, chainFlags = 0, errors;
 225
 226     static const DWORD supportedErrors =
 227         CERT_TRUST_IS_NOT_TIME_VALID |
 228         CERT_TRUST_IS_UNTRUSTED_ROOT |
 229         CERT_TRUST_IS_PARTIAL_CHAIN |
 230         CERT_TRUST_IS_OFFLINE_REVOCATION |
 231         CERT_TRUST_REVOCATION_STATUS_UNKNOWN |
 232         CERT_TRUST_IS_REVOKED |
 233         CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 234
 235     TRACE("verifying %s\n", debugstr_w(conn->server->name));
 236
 237     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
 238     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
 239     if (!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
 240         chainFlags |= CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT;
 241
 242     if (!(ret = CertGetCertificateChain(NULL, cert, NULL, store, &chainPara, chainFlags, NULL, &chain))) {
 243         TRACE("failed\n");
 244         return GetLastError();
 245     }
 246
 247     errors = chain->TrustStatus.dwErrorStatus;
 248
 249     if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) {
 250         WARN("error status %x\n", chain->TrustStatus.dwErrorStatus & ~supportedErrors);
 251         if(conn->mask_errors)
 252             WARN("CERT_TRUST_IS_NOT_TIME_VALID, unknown error flags\n");
 253         err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 254         errors &= supportedErrors;
 255     }
 256
 257     if(errors & CERT_TRUST_IS_NOT_TIME_VALID) {
 258         WARN("CERT_TRUST_IS_NOT_TIME_VALID\n");
 259         if(conn->mask_errors)
 260             conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_DATE;
 261         if(!(conn->security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID))
 262             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_DATE_INVALID;
 263         errors &= ~CERT_TRUST_IS_NOT_TIME_VALID;
 264     }
 265
 266     if(errors & CERT_TRUST_IS_UNTRUSTED_ROOT) {
 267         WARN("CERT_TRUST_IS_UNTRUSTED_ROOT\n");
 268         if(conn->mask_errors)
 269             WARN("CERT_TRUST_IS_UNTRUSTED_ROOT, unknown flags\n");
 270         if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA))
 271             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 272         errors &= ~CERT_TRUST_IS_UNTRUSTED_ROOT;
 273     }
 274
 275     if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
 276         WARN("CERT_TRUST_IS_PARTIAL_CHAIN\n");
 277         if(conn->mask_errors)
 278             conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED;
 279         if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA))
 280             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_REV_FAILED;
 281         errors &= ~CERT_TRUST_IS_PARTIAL_CHAIN;
 282     }
 283
 284     if(errors & (CERT_TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN)) {
 285         WARN("CERT_TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN\n");
 286         if(conn->mask_errors)
 287             WARN("TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN, unknown error flags\n");
 288         if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
 289             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_NO_REV;
 290         errors &= ~(CERT_TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN);
 291     }
 292
 293     if(errors & CERT_TRUST_IS_REVOKED) {
 294         WARN("CERT_TRUST_IS_REVOKED\n");
 295         if(conn->mask_errors)
 296             WARN("TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN, unknown error flags\n");
 297         if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
 298             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_REVOKED;
 299         errors &= ~CERT_TRUST_IS_REVOKED;
 300     }
 301
 302     if(errors & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) {
 303         WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE\n");
 304         if(conn->mask_errors)
 305             WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE, unknown error flags\n");
 306         if(!(conn->security_flags & SECURITY_FLAG_IGNORE_WRONG_USAGE))
 307             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 308         errors &= ~CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 309     }
 310
 311     if(!err || conn->mask_errors) {
 312         CERT_CHAIN_POLICY_PARA policyPara;
 313         SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
 314         CERT_CHAIN_POLICY_STATUS policyStatus;
 315         CERT_CHAIN_CONTEXT chainCopy;
 316
 317         /* Clear chain->TrustStatus.dwErrorStatus so
 318          * CertVerifyCertificateChainPolicy will verify additional checks
 319          * rather than stopping with an existing, ignored error.
 320          */
 321         memcpy(&chainCopy, chain, sizeof(chainCopy));
 322         chainCopy.TrustStatus.dwErrorStatus = 0;
 323         sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
 324         sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
 325         sslExtraPolicyPara.pwszServerName = conn->server->name;
 326         sslExtraPolicyPara.fdwChecks = conn->security_flags;
 327         policyPara.cbSize = sizeof(policyPara);
 328         policyPara.dwFlags = 0;
 329         policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
 330         ret = CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL,
 331                 &chainCopy, &policyPara, &policyStatus);
 332         /* Any error in the policy status indicates that the
 333          * policy couldn't be verified.
 334          */
 335         if(ret) {
 336             if(policyStatus.dwError == CERT_E_CN_NO_MATCH) {
 337                 WARN("CERT_E_CN_NO_MATCH\n");
 338                 if(conn->mask_errors)
 339                     conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CN;
 340                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_CN_INVALID;
 341             }else if(policyStatus.dwError) {
 342                 WARN("policyStatus.dwError %x\n", policyStatus.dwError);
 343                 if(conn->mask_errors)
 344                     WARN("unknown error flags for policy status %x\n", policyStatus.dwError);
 345                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 346             }
 347         }else {
 348             err = GetLastError();
 349         }
 350     }
 351
 352     CertFreeCertificateChain(chain);
 353
 354     if(err) {
 355         WARN("failed %u\n", err);
 356         if(conn->mask_errors)
 357             conn->server->security_flags |= conn->security_flags & _SECURITY_ERROR_FLAGS_MASK;
 358         return err;
 359     }
 360
 361     return ERROR_SUCCESS;
 362 }
 363
 364 static int netconn_secure_verify(int preverify_ok, X509_STORE_CTX *ctx)
 365 {
 366     SSL *ssl;
 367     BOOL ret = FALSE;
 368     HCERTSTORE store = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
 369         CERT_STORE_CREATE_NEW_FLAG, NULL);
 370     netconn_t *conn;
 371
 372     ssl = pX509_STORE_CTX_get_ex_data(ctx,
 373         pSSL_get_ex_data_X509_STORE_CTX_idx());
 374     conn = pSSL_get_ex_data(ssl, conn_idx);
 375     if (store)
 376     {
 377         X509 *cert;
 378         int i;
 379         PCCERT_CONTEXT endCert = NULL;
 380         struct stack_st *chain = (struct stack_st *)pX509_STORE_CTX_get_chain( ctx );
 381
 382         ret = TRUE;
 383         for (i = 0; ret && i < psk_num(chain); i++)
 384         {
 385             PCCERT_CONTEXT context;
 386
 387             cert = (X509 *)psk_value(chain, i);
 388             if ((context = X509_to_cert_context(cert)))
 389             {
 390                 ret = CertAddCertificateContextToStore(store, context,
 391                         CERT_STORE_ADD_ALWAYS, i ? NULL : &endCert);
 392                 CertFreeCertificateContext(context);
 393             }
 394         }
 395         if (!endCert) ret = FALSE;
 396         if (ret)
 397         {
 398             DWORD_PTR err = netconn_verify_cert(conn, endCert, store);
 399
 400             if (err)
 401             {
 402                 pSSL_set_ex_data(ssl, error_idx, (void *)err);
 403                 ret = FALSE;
 404             }
 405         }
 406         CertFreeCertificateContext(endCert);
 407         CertCloseStore(store, 0);
 408     }
 409     return ret;
 410 }
 411
 412 #endif
 413
 414 static CRITICAL_SECTION init_ssl_cs;
 415 static CRITICAL_SECTION_DEBUG init_ssl_cs_debug =
 416 {
 417     0, 0, &init_ssl_cs,
 418     { &init_ssl_cs_debug.ProcessLocksList,
 419       &init_ssl_cs_debug.ProcessLocksList },
 420     0, 0, { (DWORD_PTR)(__FILE__ ": init_ssl_cs") }
 421 };
 422 static CRITICAL_SECTION init_ssl_cs = { &init_ssl_cs_debug, -1, 0, 0, 0, 0 };
 423
 424 static DWORD init_openssl(void)
 425 {
 426 #if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
 427     int i;
 428
 429     if(OpenSSL_ssl_handle)
 430         return ERROR_SUCCESS;
 431
 432     OpenSSL_ssl_handle = wine_dlopen(SONAME_LIBSSL, RTLD_NOW, NULL, 0);
 433     if(!OpenSSL_ssl_handle) {
 434         ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n", SONAME_LIBSSL);
 435         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 436     }
 437
 438     OpenSSL_crypto_handle = wine_dlopen(SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0);
 439     if(!OpenSSL_crypto_handle) {
 440         ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n", SONAME_LIBCRYPTO);
 441         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 442     }
 443
 444     /* mmm nice ugly macroness */
 445 #define DYNSSL(x) \
 446     p##x = wine_dlsym(OpenSSL_ssl_handle, #x, NULL, 0); \
 447     if (!p##x) { \
 448         ERR("failed to load symbol %s\n", #x); \
 449         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
 450     }
 451
 452     DYNSSL(SSL_library_init);
 453     DYNSSL(SSL_load_error_strings);
 454     DYNSSL(SSLv23_method);
 455     DYNSSL(SSL_CTX_free);
 456     DYNSSL(SSL_CTX_new);
 457     DYNSSL(SSL_new);
 458     DYNSSL(SSL_free);
 459     DYNSSL(SSL_set_fd);
 460     DYNSSL(SSL_connect);
 461     DYNSSL(SSL_shutdown);
 462     DYNSSL(SSL_write);
 463     DYNSSL(SSL_read);
 464     DYNSSL(SSL_pending);
 465     DYNSSL(SSL_get_error);
 466     DYNSSL(SSL_get_ex_new_index);
 467     DYNSSL(SSL_get_ex_data);
 468     DYNSSL(SSL_set_ex_data);
 469     DYNSSL(SSL_get_ex_data_X509_STORE_CTX_idx);
 470     DYNSSL(SSL_get_peer_certificate);
 471     DYNSSL(SSL_CTX_get_timeout);
 472     DYNSSL(SSL_CTX_set_timeout);
 473     DYNSSL(SSL_CTX_set_default_verify_paths);
 474     DYNSSL(SSL_CTX_set_verify);
 475     DYNSSL(SSL_get_current_cipher);
 476     DYNSSL(SSL_CIPHER_get_bits);
 477 #undef DYNSSL
 478
 479 #define DYNCRYPTO(x) \
 480     p##x = wine_dlsym(OpenSSL_crypto_handle, #x, NULL, 0); \
 481     if (!p##x) { \
 482         ERR("failed to load symbol %s\n", #x); \
 483         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
 484     }
 485
 486     DYNCRYPTO(BIO_new_fp);
 487     DYNCRYPTO(CRYPTO_num_locks);
 488     DYNCRYPTO(CRYPTO_set_id_callback);
 489     DYNCRYPTO(CRYPTO_set_locking_callback);
 490     DYNCRYPTO(ERR_free_strings);
 491     DYNCRYPTO(ERR_get_error);
 492     DYNCRYPTO(ERR_error_string);
 493     DYNCRYPTO(X509_STORE_CTX_get_ex_data);
 494     DYNCRYPTO(X509_STORE_CTX_get_chain);
 495     DYNCRYPTO(i2d_X509);
 496     DYNCRYPTO(sk_num);
 497     DYNCRYPTO(sk_value);
 498 #undef DYNCRYPTO
 499
 500     pSSL_library_init();
 501     pSSL_load_error_strings();
 502     pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
 503
 504     meth = pSSLv23_method();
 505     ctx = pSSL_CTX_new(meth);
 506     if(!pSSL_CTX_set_default_verify_paths(ctx)) {
 507         ERR("SSL_CTX_set_default_verify_paths failed: %s\n",
 508             pERR_error_string(pERR_get_error(), 0));
 509         return ERROR_OUTOFMEMORY;
 510     }
 511
 512     error_idx = pSSL_get_ex_new_index(0, (void *)"error index", NULL, NULL, NULL);
 513     if(error_idx == -1) {
 514         ERR("SSL_get_ex_new_index failed; %s\n", pERR_error_string(pERR_get_error(), 0));
 515         return ERROR_OUTOFMEMORY;
 516     }
 517
 518     conn_idx = pSSL_get_ex_new_index(0, (void *)"netconn index", NULL, NULL, NULL);
 519     if(conn_idx == -1) {
 520         ERR("SSL_get_ex_new_index failed; %s\n", pERR_error_string(pERR_get_error(), 0));
 521         return ERROR_OUTOFMEMORY;
 522     }
 523
 524     pSSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, netconn_secure_verify);
 525
 526     pCRYPTO_set_id_callback(ssl_thread_id);
 527     num_ssl_locks = pCRYPTO_num_locks();
 528     ssl_locks = heap_alloc(num_ssl_locks * sizeof(CRITICAL_SECTION));
 529     if(!ssl_locks)
 530         return ERROR_OUTOFMEMORY;
 531
 532     for(i = 0; i < num_ssl_locks; i++)
 533     {
 534         InitializeCriticalSection(&ssl_locks[i]);
 535         ssl_locks[i].DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ssl_locks");
 536     }
 537     pCRYPTO_set_locking_callback(ssl_lock_callback);
 538
 539     return ERROR_SUCCESS;
 540 #else
 541     FIXME("can't use SSL, not compiled in.\n");
 542     return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 543 #endif
 544 }
 545
 546 DWORD create_netconn(BOOL useSSL, server_t *server, DWORD security_flags, BOOL mask_errors, DWORD timeout, netconn_t **ret)
 547 {
 548     netconn_t *netconn;
 549     int result, flag;
 550
 551     if(useSSL) {
 552         DWORD res;
 553
 554         TRACE("using SSL connection\n");
 555
 556         EnterCriticalSection(&init_ssl_cs);
 557         res = init_openssl();
 558         LeaveCriticalSection(&init_ssl_cs);
 559         if(res != ERROR_SUCCESS)
 560             return res;
 561     }
 562
 563     netconn = heap_alloc_zero(sizeof(*netconn));
 564     if(!netconn)
 565         return ERROR_OUTOFMEMORY;
 566
 567     netconn->useSSL = useSSL;
 568     netconn->socketFD = -1;
 569     netconn->security_flags = security_flags | server->security_flags;
 570     netconn->mask_errors = mask_errors;
 571     list_init(&netconn->pool_entry);
 572
 573     assert(server->addr_len);
 574     result = netconn->socketFD = socket(server->addr.ss_family, SOCK_STREAM, 0);
 575     if(result != -1) {
 576         flag = 1;
 577         ioctlsocket(netconn->socketFD, FIONBIO, &flag);
 578         result = connect(netconn->socketFD, (struct sockaddr*)&server->addr, server->addr_len);
 579         if(result == -1)
 580         {
 581             if (sock_get_error(errno) == WSAEINPROGRESS) {
 582                 struct pollfd pfd;
 583                 int res;
 584
 585                 pfd.fd = netconn->socketFD;
 586                 pfd.events = POLLOUT;
 587                 res = poll(&pfd, 1, timeout);
 588                 if (!res)
 589                 {
 590                     closesocket(netconn->socketFD);
 591                     heap_free(netconn);
 592                     return ERROR_INTERNET_CANNOT_CONNECT;
 593                 }
 594                 else if (res > 0)
 595                 {
 596                     int err;
 597                     socklen_t len = sizeof(err);
 598                     if (!getsockopt(netconn->socketFD, SOL_SOCKET, SO_ERROR, &err, &len) && !err)
 599                         result = 0;
 600                 }
 601             }
 602         }
 603         if(result == -1)
 604             closesocket(netconn->socketFD);
 605         else {
 606             flag = 0;
 607             ioctlsocket(netconn->socketFD, FIONBIO, &flag);
 608         }
 609     }
 610     if(result == -1) {
 611         heap_free(netconn);
 612         return sock_get_error(errno);
 613     }
 614
 615 #ifdef TCP_NODELAY
 616     flag = 1;
 617     result = setsockopt(netconn->socketFD, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag));
 618     if(result < 0)
 619         WARN("setsockopt(TCP_NODELAY) failed\n");
 620 #endif
 621
 622     server_addref(server);
 623     netconn->server = server;
 624
 625     *ret = netconn;
 626     return ERROR_SUCCESS;
 627 }
 628
 629 void free_netconn(netconn_t *netconn)
 630 {
 631     server_release(netconn->server);
 632
 633 #ifdef SONAME_LIBSSL
 634     if (netconn->ssl_s) {
 635         pSSL_shutdown(netconn->ssl_s);
 636         pSSL_free(netconn->ssl_s);
 637     }
 638 #endif
 639
 640     closesocket(netconn->socketFD);
 641     heap_free(netconn);
 642 }
 643
 644 void NETCON_unload(void)
 645 {
 646 #if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
 647     if (OpenSSL_crypto_handle)
 648     {
 649         pERR_free_strings();
 650         wine_dlclose(OpenSSL_crypto_handle, NULL, 0);
 651     }
 652     if (OpenSSL_ssl_handle)
 653     {
 654         if (ctx)
 655             pSSL_CTX_free(ctx);
 656         wine_dlclose(OpenSSL_ssl_handle, NULL, 0);
 657     }
 658     if (ssl_locks)
 659     {
 660         int i;
 661         for (i = 0; i < num_ssl_locks; i++)
 662         {
 663             ssl_locks[i].DebugInfo->Spare[0] = 0;
 664             DeleteCriticalSection(&ssl_locks[i]);
 665         }
 666         heap_free(ssl_locks);
 667     }
 668 #endif
 669 }
 670
 671 /* translate a unix error code into a winsock one */
 672 int sock_get_error( int err )
 673 {
 674 #if !defined(__MINGW32__) && !defined (_MSC_VER)
 675     switch (err)
 676     {
 677         case EINTR:             return WSAEINTR;
 678         case EBADF:             return WSAEBADF;
 679         case EPERM:
 680         case EACCES:            return WSAEACCES;
 681         case EFAULT:            return WSAEFAULT;
 682         case EINVAL:            return WSAEINVAL;
 683         case EMFILE:            return WSAEMFILE;
 684         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 685         case EINPROGRESS:       return WSAEINPROGRESS;
 686         case EALREADY:          return WSAEALREADY;
 687         case ENOTSOCK:          return WSAENOTSOCK;
 688         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 689         case EMSGSIZE:          return WSAEMSGSIZE;
 690         case EPROTOTYPE:        return WSAEPROTOTYPE;
 691         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 692         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 693         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 694         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 695         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 696         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 697         case EADDRINUSE:        return WSAEADDRINUSE;
 698         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 699         case ENETDOWN:          return WSAENETDOWN;
 700         case ENETUNREACH:       return WSAENETUNREACH;
 701         case ENETRESET:         return WSAENETRESET;
 702         case ECONNABORTED:      return WSAECONNABORTED;
 703         case EPIPE:
 704         case ECONNRESET:        return WSAECONNRESET;
 705         case ENOBUFS:           return WSAENOBUFS;
 706         case EISCONN:           return WSAEISCONN;
 707         case ENOTCONN:          return WSAENOTCONN;
 708         case ESHUTDOWN:         return WSAESHUTDOWN;
 709         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 710         case ETIMEDOUT:         return WSAETIMEDOUT;
 711         case ECONNREFUSED:      return WSAECONNREFUSED;
 712         case ELOOP:             return WSAELOOP;
 713         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 714         case EHOSTDOWN:         return WSAEHOSTDOWN;
 715         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 716         case ENOTEMPTY:         return WSAENOTEMPTY;
 717 #ifdef EPROCLIM
 718         case EPROCLIM:          return WSAEPROCLIM;
 719 #endif
 720 #ifdef EUSERS
 721         case EUSERS:            return WSAEUSERS;
 722 #endif
 723 #ifdef EDQUOT
 724         case EDQUOT:            return WSAEDQUOT;
 725 #endif
 726 #ifdef ESTALE
 727         case ESTALE:            return WSAESTALE;
 728 #endif
 729 #ifdef EREMOTE
 730         case EREMOTE:           return WSAEREMOTE;
 731 #endif
 732     default: errno=err; perror("sock_set_error"); return WSAEFAULT;
 733     }
 734 #endif
 735     return err;
 736 }
 737
 738 /******************************************************************************
 739  * NETCON_secure_connect
 740  * Initiates a secure connection over an existing plaintext connection.
 741  */
 742 DWORD NETCON_secure_connect(netconn_t *connection)
 743 {
 744     DWORD res = ERROR_NOT_SUPPORTED;
 745 #ifdef SONAME_LIBSSL
 746     void *ssl_s;
 747     int bits;
 748
 749     /* can't connect if we are already connected */
 750     if (connection->ssl_s)
 751     {
 752         ERR("already connected\n");
 753         return ERROR_INTERNET_CANNOT_CONNECT;
 754     }
 755
 756     ssl_s = pSSL_new(ctx);
 757     if (!ssl_s)
 758     {
 759         ERR("SSL_new failed: %s\n",
 760             pERR_error_string(pERR_get_error(), 0));
 761         return ERROR_OUTOFMEMORY;
 762     }
 763
 764     if (!pSSL_set_fd(ssl_s, connection->socketFD))
 765     {
 766         ERR("SSL_set_fd failed: %s\n",
 767             pERR_error_string(pERR_get_error(), 0));
 768         res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 769         goto fail;
 770     }
 771
 772     if (!pSSL_set_ex_data(ssl_s, conn_idx, connection))
 773     {
 774         ERR("SSL_set_ex_data failed: %s\n",
 775             pERR_error_string(pERR_get_error(), 0));
 776         res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 777         goto fail;
 778     }
 779     if (pSSL_connect(ssl_s) <= 0)
 780     {
 781         res = (DWORD_PTR)pSSL_get_ex_data(ssl_s, error_idx);
 782         if (!res)
 783             res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 784         ERR("SSL_connect failed: %d\n", res);
 785         goto fail;
 786     }
 787
 788     connection->ssl_s = ssl_s;
 789
 790     bits = NETCON_GetCipherStrength(connection);
 791     if (bits >= 128)
 792         connection->security_flags |= SECURITY_FLAG_STRENGTH_STRONG;
 793     else if (bits >= 56)
 794         connection->security_flags |= SECURITY_FLAG_STRENGTH_MEDIUM;
 795     else
 796         connection->security_flags |= SECURITY_FLAG_STRENGTH_WEAK;
 797     connection->security_flags |= SECURITY_FLAG_SECURE;
 798
 799     if(connection->mask_errors)
 800         connection->server->security_flags = connection->security_flags;
 801     return ERROR_SUCCESS;
 802
 803 fail:
 804     if (ssl_s)
 805     {
 806         pSSL_shutdown(ssl_s);
 807         pSSL_free(ssl_s);
 808     }
 809 #endif
 810     return res;
 811 }
 812
 813 /******************************************************************************
 814  * NETCON_send
 815  * Basically calls 'send()' unless we should use SSL
 816  * number of chars send is put in *sent
 817  */
 818 DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags,
 819                 int *sent /* out */)
 820 {
 821     if (!connection->useSSL)
 822     {
 823         *sent = send(connection->socketFD, msg, len, flags);
 824         if (*sent == -1)
 825             return sock_get_error(errno);
 826         return ERROR_SUCCESS;
 827     }
 828     else
 829     {
 830 #ifdef SONAME_LIBSSL
 831         if(!connection->ssl_s) {
 832             FIXME("not connected\n");
 833             return ERROR_NOT_SUPPORTED;
 834         }
 835         if (flags)
 836             FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
 837         *sent = pSSL_write(connection->ssl_s, msg, len);
 838         if (*sent < 1 && len)
 839             return ERROR_INTERNET_CONNECTION_ABORTED;
 840         return ERROR_SUCCESS;
 841 #else
 842         return ERROR_NOT_SUPPORTED;
 843 #endif
 844     }
 845 }
 846
 847 /******************************************************************************
 848  * NETCON_recv
 849  * Basically calls 'recv()' unless we should use SSL
 850  * number of chars received is put in *recvd
 851  */
 852 DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, int flags,
 853                 int *recvd /* out */)
 854 {
 855     *recvd = 0;
 856     if (!len)
 857         return ERROR_SUCCESS;
 858     if (!connection->useSSL)
 859     {
 860         *recvd = recv(connection->socketFD, buf, len, flags);
 861         return *recvd == -1 ? sock_get_error(errno) :  ERROR_SUCCESS;
 862     }
 863     else
 864     {
 865 #ifdef SONAME_LIBSSL
 866         if(!connection->ssl_s) {
 867             FIXME("not connected\n");
 868             return ERROR_NOT_SUPPORTED;
 869         }
 870         *recvd = pSSL_read(connection->ssl_s, buf, len);
 871
 872         /* Check if EOF was received */
 873         if(!*recvd && (pSSL_get_error(connection->ssl_s, *recvd)==SSL_ERROR_ZERO_RETURN
 874                     || pSSL_get_error(connection->ssl_s, *recvd)==SSL_ERROR_SYSCALL))
 875             return ERROR_SUCCESS;
 876
 877         return *recvd > 0 ? ERROR_SUCCESS : ERROR_INTERNET_CONNECTION_ABORTED;
 878 #else
 879         return ERROR_NOT_SUPPORTED;
 880 #endif
 881     }
 882 }
 883
 884 /******************************************************************************
 885  * NETCON_query_data_available
 886  * Returns the number of bytes of peeked data plus the number of bytes of
 887  * queued, but unread data.
 888  */
 889 BOOL NETCON_query_data_available(netconn_t *connection, DWORD *available)
 890 {
 891     *available = 0;
 892
 893     if (!connection->useSSL)
 894     {
 895 #ifdef FIONREAD
 896         int unread;
 897         int retval = ioctlsocket(connection->socketFD, FIONREAD, &unread);
 898         if (!retval)
 899         {
 900             TRACE("%d bytes of queued, but unread data\n", unread);
 901             *available += unread;
 902         }
 903 #endif
 904     }
 905     else
 906     {
 907 #ifdef SONAME_LIBSSL
 908         *available = connection->ssl_s ? pSSL_pending(connection->ssl_s) : 0;
 909 #endif
 910     }
 911     return TRUE;
 912 }
 913
 914 BOOL NETCON_is_alive(netconn_t *netconn)
 915 {
 916 #ifdef MSG_DONTWAIT
 917     ssize_t len;
 918     BYTE b;
 919
 920     len = recv(netconn->socketFD, &b, 1, MSG_PEEK|MSG_DONTWAIT);
 921     return len == 1 || (len == -1 && errno == EWOULDBLOCK);
 922 #elif defined(__MINGW32__) || defined(_MSC_VER)
 923     ULONG mode;
 924     int len;
 925     char b;
 926
 927     mode = 1;
 928     if(!ioctlsocket(netconn->socketFD, FIONBIO, &mode))
 929         return FALSE;
 930
 931     len = recv(netconn->socketFD, &b, 1, MSG_PEEK);
 932
 933     mode = 0;
 934     if(!ioctlsocket(netconn->socketFD, FIONBIO, &mode))
 935         return FALSE;
 936
 937     return len == 1 || (len == -1 && errno == WSAEWOULDBLOCK);
 938 #else
 939     FIXME("not supported on this platform\n");
 940     return TRUE;
 941 #endif
 942 }
 943
 944 LPCVOID NETCON_GetCert(netconn_t *connection)
 945 {
 946 #ifdef SONAME_LIBSSL
 947     X509* cert;
 948     LPCVOID r = NULL;
 949
 950     if (!connection->ssl_s)
 951         return NULL;
 952
 953     cert = pSSL_get_peer_certificate(connection->ssl_s);
 954     r = X509_to_cert_context(cert);
 955     return r;
 956 #else
 957     return NULL;
 958 #endif
 959 }
 960
 961 int NETCON_GetCipherStrength(netconn_t *connection)
 962 {
 963 #ifdef SONAME_LIBSSL
 964 #if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x0090707f)
 965     const SSL_CIPHER *cipher;
 966 #else
 967     SSL_CIPHER *cipher;
 968 #endif
 969     int bits = 0;
 970
 971     if (!connection->ssl_s)
 972         return 0;
 973     cipher = pSSL_get_current_cipher(connection->ssl_s);
 974     if (!cipher)
 975         return 0;
 976     pSSL_CIPHER_get_bits(cipher, &bits);
 977     return bits;
 978 #else
 979     return 0;
 980 #endif
 981 }
 982
 983 DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value)
 984 {
 985     int result;
 986     struct timeval tv;
 987
 988     /* value is in milliseconds, convert to struct timeval */
 989     if (value == INFINITE)
 990     {
 991         tv.tv_sec = 0;
 992         tv.tv_usec = 0;
 993     }
 994     else
 995     {
 996         tv.tv_sec = value / 1000;
 997         tv.tv_usec = (value % 1000) * 1000;
 998     }
 999     result = setsockopt(connection->socketFD, SOL_SOCKET,
1000                         send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
1001                         sizeof(tv));
1002     if (result == -1)
1003     {
1004         WARN("setsockopt failed (%s)\n", strerror(errno));
1005         return sock_get_error(errno);
1006     }
1007     return ERROR_SUCCESS;
1008 }