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
  84 #include "wine/debug.h"
  85 #include "internet.h"
  86
  87 /* To avoid conflicts with the Unix socket headers. we only need it for
  88  * the error codes anyway. */
  89 #define USE_WS_PREFIX
  90 #include "winsock2.h"
  91
  92 #define RESPONSE_TIMEOUT        30            /* FROM internet.c */
  93
  94
  95 WINE_DEFAULT_DEBUG_CHANNEL(wininet);
  96
  97 /* FIXME!!!!!!
  98  *    This should use winsock - To use winsock the functions will have to change a bit
  99  *        as they are designed for unix sockets.
 100  *    SSL stuff should use crypt32.dll
 101  */
 102
 103 #ifdef SONAME_LIBSSL
 104
 105 #include <openssl/err.h>
 106
 107 static void *OpenSSL_ssl_handle;
 108 static void *OpenSSL_crypto_handle;
 109
 110 #if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER > 0x10000000)
 111 static const SSL_METHOD *meth;
 112 #else
 113 static SSL_METHOD *meth;
 114 #endif
 115 static SSL_CTX *ctx;
 116 static int error_idx;
 117 static int conn_idx;
 118
 119 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
 120
 121 /* OpenSSL functions that we use */
 122 MAKE_FUNCPTR(SSL_library_init);
 123 MAKE_FUNCPTR(SSL_load_error_strings);
 124 MAKE_FUNCPTR(SSLv23_method);
 125 MAKE_FUNCPTR(SSL_CTX_free);
 126 MAKE_FUNCPTR(SSL_CTX_new);
 127 MAKE_FUNCPTR(SSL_new);
 128 MAKE_FUNCPTR(SSL_free);
 129 MAKE_FUNCPTR(SSL_set_fd);
 130 MAKE_FUNCPTR(SSL_connect);
 131 MAKE_FUNCPTR(SSL_shutdown);
 132 MAKE_FUNCPTR(SSL_write);
 133 MAKE_FUNCPTR(SSL_read);
 134 MAKE_FUNCPTR(SSL_pending);
 135 MAKE_FUNCPTR(SSL_get_error);
 136 MAKE_FUNCPTR(SSL_get_ex_new_index);
 137 MAKE_FUNCPTR(SSL_get_ex_data);
 138 MAKE_FUNCPTR(SSL_set_ex_data);
 139 MAKE_FUNCPTR(SSL_get_ex_data_X509_STORE_CTX_idx);
 140 MAKE_FUNCPTR(SSL_get_peer_certificate);
 141 MAKE_FUNCPTR(SSL_CTX_get_timeout);
 142 MAKE_FUNCPTR(SSL_CTX_set_timeout);
 143 MAKE_FUNCPTR(SSL_CTX_set_default_verify_paths);
 144 MAKE_FUNCPTR(SSL_CTX_set_verify);
 145 MAKE_FUNCPTR(SSL_get_current_cipher);
 146 MAKE_FUNCPTR(SSL_CIPHER_get_bits);
 147
 148 /* OpenSSL's libcrypto functions that we use */
 149 MAKE_FUNCPTR(BIO_new_fp);
 150 MAKE_FUNCPTR(CRYPTO_num_locks);
 151 MAKE_FUNCPTR(CRYPTO_set_id_callback);
 152 MAKE_FUNCPTR(CRYPTO_set_locking_callback);
 153 MAKE_FUNCPTR(ERR_free_strings);
 154 MAKE_FUNCPTR(ERR_get_error);
 155 MAKE_FUNCPTR(ERR_error_string);
 156 MAKE_FUNCPTR(X509_STORE_CTX_get_ex_data);
 157 MAKE_FUNCPTR(X509_STORE_CTX_get_chain);
 158 MAKE_FUNCPTR(i2d_X509);
 159 MAKE_FUNCPTR(sk_num);
 160 MAKE_FUNCPTR(sk_value);
 161 #undef MAKE_FUNCPTR
 162
 163 static CRITICAL_SECTION *ssl_locks;
 164 static unsigned int num_ssl_locks;
 165
 166 static unsigned long ssl_thread_id(void)
 167 {
 168     return GetCurrentThreadId();
 169 }
 170
 171 static void ssl_lock_callback(int mode, int type, const char *file, int line)
 172 {
 173     if (mode & CRYPTO_LOCK)
 174         EnterCriticalSection(&ssl_locks[type]);
 175     else
 176         LeaveCriticalSection(&ssl_locks[type]);
 177 }
 178
 179 static PCCERT_CONTEXT X509_to_cert_context(X509 *cert)
 180 {
 181     unsigned char* buffer,*p;
 182     INT len;
 183     BOOL malloced = FALSE;
 184     PCCERT_CONTEXT ret;
 185
 186     p = NULL;
 187     len = pi2d_X509(cert,&p);
 188     /*
 189      * SSL 0.9.7 and above malloc the buffer if it is null.
 190      * however earlier version do not and so we would need to alloc the buffer.
 191      *
 192      * see the i2d_X509 man page for more details.
 193      */
 194     if (!p)
 195     {
 196         buffer = heap_alloc(len);
 197         p = buffer;
 198         len = pi2d_X509(cert,&p);
 199     }
 200     else
 201     {
 202         buffer = p;
 203         malloced = TRUE;
 204     }
 205
 206     ret = CertCreateCertificateContext(X509_ASN_ENCODING,buffer,len);
 207
 208     if (malloced)
 209         free(buffer);
 210     else
 211         heap_free(buffer);
 212
 213     return ret;
 214 }
 215
 216 static DWORD netconn_verify_cert(netconn_t *conn, PCCERT_CONTEXT cert, HCERTSTORE store)
 217 {
 218     BOOL ret;
 219     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
 220     PCCERT_CHAIN_CONTEXT chain;
 221     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
 222     char *server_auth[] = { oid_server_auth };
 223     DWORD err = ERROR_SUCCESS, chainFlags = 0, errors;
 224
 225     static const DWORD supportedErrors =
 226         CERT_TRUST_IS_NOT_TIME_VALID |
 227         CERT_TRUST_IS_UNTRUSTED_ROOT |
 228         CERT_TRUST_IS_PARTIAL_CHAIN |
 229         CERT_TRUST_IS_OFFLINE_REVOCATION |
 230         CERT_TRUST_REVOCATION_STATUS_UNKNOWN |
 231         CERT_TRUST_IS_REVOKED |
 232         CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 233
 234     TRACE("verifying %s\n", debugstr_w(conn->server->name));
 235
 236     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
 237     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
 238     if (!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
 239         chainFlags |= CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT;
 240
 241     if (!(ret = CertGetCertificateChain(NULL, cert, NULL, store, &chainPara, chainFlags, NULL, &chain))) {
 242         TRACE("failed\n");
 243         return GetLastError();
 244     }
 245
 246     errors = chain->TrustStatus.dwErrorStatus;
 247
 248     do {
 249         /* This seems strange, but that's what tests show */
 250         if(errors & (CERT_TRUST_IS_PARTIAL_CHAIN|CERT_TRUST_IS_OFFLINE_REVOCATION)) {
 251             WARN("ERROR_INTERNET_SEC_CERT_REV_FAILED\n");
 252             err = ERROR_INTERNET_SEC_CERT_REV_FAILED;
 253             if(conn->mask_errors)
 254                 conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED;
 255             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
 256                 break;
 257         }
 258
 259         if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) {
 260             WARN("error status %x\n", chain->TrustStatus.dwErrorStatus & ~supportedErrors);
 261             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 262             errors &= supportedErrors;
 263             if(!conn->mask_errors)
 264                 break;
 265             WARN("unknown error flags\n");
 266         }
 267
 268         if(errors & CERT_TRUST_IS_NOT_TIME_VALID) {
 269             WARN("CERT_TRUST_IS_NOT_TIME_VALID\n");
 270             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID)) {
 271                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_DATE_INVALID;
 272                 if(!conn->mask_errors)
 273                     break;
 274                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_DATE;
 275             }
 276             errors &= ~CERT_TRUST_IS_NOT_TIME_VALID;
 277         }
 278
 279         if(errors & CERT_TRUST_IS_UNTRUSTED_ROOT) {
 280             WARN("CERT_TRUST_IS_UNTRUSTED_ROOT\n");
 281             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 282                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 283                 if(!conn->mask_errors)
 284                     break;
 285                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 286             }
 287             errors &= ~CERT_TRUST_IS_UNTRUSTED_ROOT;
 288         }
 289
 290         if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
 291             WARN("CERT_TRUST_IS_PARTIAL_CHAIN\n");
 292             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 293                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 294                 if(!conn->mask_errors)
 295                     break;
 296                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 297             }
 298             errors &= ~CERT_TRUST_IS_PARTIAL_CHAIN;
 299         }
 300
 301         if(errors & (CERT_TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN)) {
 302             WARN("CERT_TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN\n");
 303             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION)) {
 304                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_NO_REV;
 305                 if(!conn->mask_errors)
 306                     break;
 307                 conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED;
 308             }
 309             errors &= ~(CERT_TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN);
 310         }
 311
 312         if(errors & CERT_TRUST_IS_REVOKED) {
 313             WARN("CERT_TRUST_IS_REVOKED\n");
 314             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION)) {
 315                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_REVOKED;
 316                 if(!conn->mask_errors)
 317                     break;
 318                 WARN("TRUST_IS_OFFLINE_REVOCATION | CERT_TRUST_REVOCATION_STATUS_UNKNOWN, unknown error flags\n");
 319             }
 320             errors &= ~CERT_TRUST_IS_REVOKED;
 321         }
 322
 323         if(errors & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) {
 324             WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE\n");
 325             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_WRONG_USAGE)) {
 326                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 327                 if(!conn->mask_errors)
 328                     break;
 329                 WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE, unknown error flags\n");
 330             }
 331             errors &= ~CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 332         }
 333
 334         if(err == ERROR_INTERNET_SEC_CERT_REV_FAILED) {
 335             assert(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION);
 336             err = ERROR_SUCCESS;
 337         }
 338     }while(0);
 339
 340     if(!err || conn->mask_errors) {
 341         CERT_CHAIN_POLICY_PARA policyPara;
 342         SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
 343         CERT_CHAIN_POLICY_STATUS policyStatus;
 344         CERT_CHAIN_CONTEXT chainCopy;
 345
 346         /* Clear chain->TrustStatus.dwErrorStatus so
 347          * CertVerifyCertificateChainPolicy will verify additional checks
 348          * rather than stopping with an existing, ignored error.
 349          */
 350         memcpy(&chainCopy, chain, sizeof(chainCopy));
 351         chainCopy.TrustStatus.dwErrorStatus = 0;
 352         sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
 353         sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
 354         sslExtraPolicyPara.pwszServerName = conn->server->name;
 355         sslExtraPolicyPara.fdwChecks = conn->security_flags;
 356         policyPara.cbSize = sizeof(policyPara);
 357         policyPara.dwFlags = 0;
 358         policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
 359         ret = CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL,
 360                 &chainCopy, &policyPara, &policyStatus);
 361         /* Any error in the policy status indicates that the
 362          * policy couldn't be verified.
 363          */
 364         if(ret) {
 365             if(policyStatus.dwError == CERT_E_CN_NO_MATCH) {
 366                 WARN("CERT_E_CN_NO_MATCH\n");
 367                 if(conn->mask_errors)
 368                     conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CN;
 369                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_CN_INVALID;
 370             }else if(policyStatus.dwError) {
 371                 WARN("policyStatus.dwError %x\n", policyStatus.dwError);
 372                 if(conn->mask_errors)
 373                     WARN("unknown error flags for policy status %x\n", policyStatus.dwError);
 374                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 375             }
 376         }else {
 377             err = GetLastError();
 378         }
 379     }
 380
 381     if(err) {
 382         WARN("failed %u\n", err);
 383         CertFreeCertificateChain(chain);
 384         if(conn->server->cert_chain) {
 385             CertFreeCertificateChain(conn->server->cert_chain);
 386             conn->server->cert_chain = NULL;
 387         }
 388         if(conn->mask_errors)
 389             conn->server->security_flags |= conn->security_flags & _SECURITY_ERROR_FLAGS_MASK;
 390         return err;
 391     }
 392
 393     /* FIXME: Reuse cached chain */
 394     if(conn->server->cert_chain)
 395         CertFreeCertificateChain(chain);
 396     else
 397         conn->server->cert_chain = chain;
 398     return ERROR_SUCCESS;
 399 }
 400
 401 static int netconn_secure_verify(int preverify_ok, X509_STORE_CTX *ctx)
 402 {
 403     SSL *ssl;
 404     BOOL ret = FALSE;
 405     HCERTSTORE store = CertOpenStore(CERT_STORE_PROV_MEMORY, 0, 0,
 406         CERT_STORE_CREATE_NEW_FLAG, NULL);
 407     netconn_t *conn;
 408
 409     ssl = pX509_STORE_CTX_get_ex_data(ctx,
 410         pSSL_get_ex_data_X509_STORE_CTX_idx());
 411     conn = pSSL_get_ex_data(ssl, conn_idx);
 412     if (store)
 413     {
 414         X509 *cert;
 415         int i;
 416         PCCERT_CONTEXT endCert = NULL;
 417         struct stack_st *chain = (struct stack_st *)pX509_STORE_CTX_get_chain( ctx );
 418
 419         ret = TRUE;
 420         for (i = 0; ret && i < psk_num(chain); i++)
 421         {
 422             PCCERT_CONTEXT context;
 423
 424             cert = (X509 *)psk_value(chain, i);
 425             if ((context = X509_to_cert_context(cert)))
 426             {
 427                 ret = CertAddCertificateContextToStore(store, context,
 428                         CERT_STORE_ADD_ALWAYS, i ? NULL : &endCert);
 429                 CertFreeCertificateContext(context);
 430             }
 431         }
 432         if (!endCert) ret = FALSE;
 433         if (ret)
 434         {
 435             DWORD_PTR err = netconn_verify_cert(conn, endCert, store);
 436
 437             if (err)
 438             {
 439                 pSSL_set_ex_data(ssl, error_idx, (void *)err);
 440                 ret = FALSE;
 441             }
 442         }
 443         CertFreeCertificateContext(endCert);
 444         CertCloseStore(store, 0);
 445     }
 446     return ret;
 447 }
 448
 449 #endif
 450
 451 static CRITICAL_SECTION init_ssl_cs;
 452 static CRITICAL_SECTION_DEBUG init_ssl_cs_debug =
 453 {
 454     0, 0, &init_ssl_cs,
 455     { &init_ssl_cs_debug.ProcessLocksList,
 456       &init_ssl_cs_debug.ProcessLocksList },
 457     0, 0, { (DWORD_PTR)(__FILE__ ": init_ssl_cs") }
 458 };
 459 static CRITICAL_SECTION init_ssl_cs = { &init_ssl_cs_debug, -1, 0, 0, 0, 0 };
 460
 461 static DWORD init_openssl(void)
 462 {
 463 #if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
 464     int i;
 465
 466     if(OpenSSL_ssl_handle)
 467         return ERROR_SUCCESS;
 468
 469     OpenSSL_ssl_handle = wine_dlopen(SONAME_LIBSSL, RTLD_NOW, NULL, 0);
 470     if(!OpenSSL_ssl_handle) {
 471         ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n", SONAME_LIBSSL);
 472         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 473     }
 474
 475     OpenSSL_crypto_handle = wine_dlopen(SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0);
 476     if(!OpenSSL_crypto_handle) {
 477         ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n", SONAME_LIBCRYPTO);
 478         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 479     }
 480
 481     /* mmm nice ugly macroness */
 482 #define DYNSSL(x) \
 483     p##x = wine_dlsym(OpenSSL_ssl_handle, #x, NULL, 0); \
 484     if (!p##x) { \
 485         ERR("failed to load symbol %s\n", #x); \
 486         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
 487     }
 488
 489     DYNSSL(SSL_library_init);
 490     DYNSSL(SSL_load_error_strings);
 491     DYNSSL(SSLv23_method);
 492     DYNSSL(SSL_CTX_free);
 493     DYNSSL(SSL_CTX_new);
 494     DYNSSL(SSL_new);
 495     DYNSSL(SSL_free);
 496     DYNSSL(SSL_set_fd);
 497     DYNSSL(SSL_connect);
 498     DYNSSL(SSL_shutdown);
 499     DYNSSL(SSL_write);
 500     DYNSSL(SSL_read);
 501     DYNSSL(SSL_pending);
 502     DYNSSL(SSL_get_error);
 503     DYNSSL(SSL_get_ex_new_index);
 504     DYNSSL(SSL_get_ex_data);
 505     DYNSSL(SSL_set_ex_data);
 506     DYNSSL(SSL_get_ex_data_X509_STORE_CTX_idx);
 507     DYNSSL(SSL_get_peer_certificate);
 508     DYNSSL(SSL_CTX_get_timeout);
 509     DYNSSL(SSL_CTX_set_timeout);
 510     DYNSSL(SSL_CTX_set_default_verify_paths);
 511     DYNSSL(SSL_CTX_set_verify);
 512     DYNSSL(SSL_get_current_cipher);
 513     DYNSSL(SSL_CIPHER_get_bits);
 514 #undef DYNSSL
 515
 516 #define DYNCRYPTO(x) \
 517     p##x = wine_dlsym(OpenSSL_crypto_handle, #x, NULL, 0); \
 518     if (!p##x) { \
 519         ERR("failed to load symbol %s\n", #x); \
 520         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
 521     }
 522
 523     DYNCRYPTO(BIO_new_fp);
 524     DYNCRYPTO(CRYPTO_num_locks);
 525     DYNCRYPTO(CRYPTO_set_id_callback);
 526     DYNCRYPTO(CRYPTO_set_locking_callback);
 527     DYNCRYPTO(ERR_free_strings);
 528     DYNCRYPTO(ERR_get_error);
 529     DYNCRYPTO(ERR_error_string);
 530     DYNCRYPTO(X509_STORE_CTX_get_ex_data);
 531     DYNCRYPTO(X509_STORE_CTX_get_chain);
 532     DYNCRYPTO(i2d_X509);
 533     DYNCRYPTO(sk_num);
 534     DYNCRYPTO(sk_value);
 535 #undef DYNCRYPTO
 536
 537     pSSL_library_init();
 538     pSSL_load_error_strings();
 539     pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
 540
 541     meth = pSSLv23_method();
 542     ctx = pSSL_CTX_new(meth);
 543     if(!pSSL_CTX_set_default_verify_paths(ctx)) {
 544         ERR("SSL_CTX_set_default_verify_paths failed: %s\n",
 545             pERR_error_string(pERR_get_error(), 0));
 546         return ERROR_OUTOFMEMORY;
 547     }
 548
 549     error_idx = pSSL_get_ex_new_index(0, (void *)"error index", NULL, NULL, NULL);
 550     if(error_idx == -1) {
 551         ERR("SSL_get_ex_new_index failed; %s\n", pERR_error_string(pERR_get_error(), 0));
 552         return ERROR_OUTOFMEMORY;
 553     }
 554
 555     conn_idx = pSSL_get_ex_new_index(0, (void *)"netconn index", NULL, NULL, NULL);
 556     if(conn_idx == -1) {
 557         ERR("SSL_get_ex_new_index failed; %s\n", pERR_error_string(pERR_get_error(), 0));
 558         return ERROR_OUTOFMEMORY;
 559     }
 560
 561     pSSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, netconn_secure_verify);
 562
 563     pCRYPTO_set_id_callback(ssl_thread_id);
 564     num_ssl_locks = pCRYPTO_num_locks();
 565     ssl_locks = heap_alloc(num_ssl_locks * sizeof(CRITICAL_SECTION));
 566     if(!ssl_locks)
 567         return ERROR_OUTOFMEMORY;
 568
 569     for(i = 0; i < num_ssl_locks; i++)
 570     {
 571         InitializeCriticalSection(&ssl_locks[i]);
 572         ssl_locks[i].DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ssl_locks");
 573     }
 574     pCRYPTO_set_locking_callback(ssl_lock_callback);
 575
 576     return ERROR_SUCCESS;
 577 #else
 578     FIXME("can't use SSL, not compiled in.\n");
 579     return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 580 #endif
 581 }
 582
 583 DWORD create_netconn(BOOL useSSL, server_t *server, DWORD security_flags, BOOL mask_errors, DWORD timeout, netconn_t **ret)
 584 {
 585     netconn_t *netconn;
 586     int result, flag;
 587
 588     if(useSSL) {
 589         DWORD res;
 590
 591         TRACE("using SSL connection\n");
 592
 593         EnterCriticalSection(&init_ssl_cs);
 594         res = init_openssl();
 595         LeaveCriticalSection(&init_ssl_cs);
 596         if(res != ERROR_SUCCESS)
 597             return res;
 598     }
 599
 600     netconn = heap_alloc_zero(sizeof(*netconn));
 601     if(!netconn)
 602         return ERROR_OUTOFMEMORY;
 603
 604     netconn->useSSL = useSSL;
 605     netconn->socketFD = -1;
 606     netconn->security_flags = security_flags | server->security_flags;
 607     netconn->mask_errors = mask_errors;
 608     list_init(&netconn->pool_entry);
 609
 610     assert(server->addr_len);
 611     result = netconn->socketFD = socket(server->addr.ss_family, SOCK_STREAM, 0);
 612     if(result != -1) {
 613         flag = 1;
 614         ioctlsocket(netconn->socketFD, FIONBIO, &flag);
 615         result = connect(netconn->socketFD, (struct sockaddr*)&server->addr, server->addr_len);
 616         if(result == -1)
 617         {
 618             if (sock_get_error(errno) == WSAEINPROGRESS) {
 619                 struct pollfd pfd;
 620                 int res;
 621
 622                 pfd.fd = netconn->socketFD;
 623                 pfd.events = POLLOUT;
 624                 res = poll(&pfd, 1, timeout);
 625                 if (!res)
 626                 {
 627                     closesocket(netconn->socketFD);
 628                     heap_free(netconn);
 629                     return ERROR_INTERNET_CANNOT_CONNECT;
 630                 }
 631                 else if (res > 0)
 632                 {
 633                     int err;
 634                     socklen_t len = sizeof(err);
 635                     if (!getsockopt(netconn->socketFD, SOL_SOCKET, SO_ERROR, &err, &len) && !err)
 636                         result = 0;
 637                 }
 638             }
 639         }
 640         if(result == -1)
 641             closesocket(netconn->socketFD);
 642         else {
 643             flag = 0;
 644             ioctlsocket(netconn->socketFD, FIONBIO, &flag);
 645         }
 646     }
 647     if(result == -1) {
 648         heap_free(netconn);
 649         return sock_get_error(errno);
 650     }
 651
 652 #ifdef TCP_NODELAY
 653     flag = 1;
 654     result = setsockopt(netconn->socketFD, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag));
 655     if(result < 0)
 656         WARN("setsockopt(TCP_NODELAY) failed\n");
 657 #endif
 658
 659     server_addref(server);
 660     netconn->server = server;
 661
 662     *ret = netconn;
 663     return ERROR_SUCCESS;
 664 }
 665
 666 void free_netconn(netconn_t *netconn)
 667 {
 668     server_release(netconn->server);
 669
 670 #ifdef SONAME_LIBSSL
 671     if (netconn->ssl_s) {
 672         pSSL_shutdown(netconn->ssl_s);
 673         pSSL_free(netconn->ssl_s);
 674     }
 675 #endif
 676
 677     closesocket(netconn->socketFD);
 678     heap_free(netconn);
 679 }
 680
 681 void NETCON_unload(void)
 682 {
 683 #if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
 684     if (OpenSSL_crypto_handle)
 685     {
 686         pERR_free_strings();
 687         wine_dlclose(OpenSSL_crypto_handle, NULL, 0);
 688     }
 689     if (OpenSSL_ssl_handle)
 690     {
 691         if (ctx)
 692             pSSL_CTX_free(ctx);
 693         wine_dlclose(OpenSSL_ssl_handle, NULL, 0);
 694     }
 695     if (ssl_locks)
 696     {
 697         int i;
 698         for (i = 0; i < num_ssl_locks; i++)
 699         {
 700             ssl_locks[i].DebugInfo->Spare[0] = 0;
 701             DeleteCriticalSection(&ssl_locks[i]);
 702         }
 703         heap_free(ssl_locks);
 704     }
 705 #endif
 706 }
 707
 708 /* translate a unix error code into a winsock one */
 709 int sock_get_error( int err )
 710 {
 711 #if !defined(__MINGW32__) && !defined (_MSC_VER)
 712     switch (err)
 713     {
 714         case EINTR:             return WSAEINTR;
 715         case EBADF:             return WSAEBADF;
 716         case EPERM:
 717         case EACCES:            return WSAEACCES;
 718         case EFAULT:            return WSAEFAULT;
 719         case EINVAL:            return WSAEINVAL;
 720         case EMFILE:            return WSAEMFILE;
 721         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 722         case EINPROGRESS:       return WSAEINPROGRESS;
 723         case EALREADY:          return WSAEALREADY;
 724         case ENOTSOCK:          return WSAENOTSOCK;
 725         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 726         case EMSGSIZE:          return WSAEMSGSIZE;
 727         case EPROTOTYPE:        return WSAEPROTOTYPE;
 728         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 729         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 730         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 731         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 732         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 733         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 734         case EADDRINUSE:        return WSAEADDRINUSE;
 735         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 736         case ENETDOWN:          return WSAENETDOWN;
 737         case ENETUNREACH:       return WSAENETUNREACH;
 738         case ENETRESET:         return WSAENETRESET;
 739         case ECONNABORTED:      return WSAECONNABORTED;
 740         case EPIPE:
 741         case ECONNRESET:        return WSAECONNRESET;
 742         case ENOBUFS:           return WSAENOBUFS;
 743         case EISCONN:           return WSAEISCONN;
 744         case ENOTCONN:          return WSAENOTCONN;
 745         case ESHUTDOWN:         return WSAESHUTDOWN;
 746         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 747         case ETIMEDOUT:         return WSAETIMEDOUT;
 748         case ECONNREFUSED:      return WSAECONNREFUSED;
 749         case ELOOP:             return WSAELOOP;
 750         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 751         case EHOSTDOWN:         return WSAEHOSTDOWN;
 752         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 753         case ENOTEMPTY:         return WSAENOTEMPTY;
 754 #ifdef EPROCLIM
 755         case EPROCLIM:          return WSAEPROCLIM;
 756 #endif
 757 #ifdef EUSERS
 758         case EUSERS:            return WSAEUSERS;
 759 #endif
 760 #ifdef EDQUOT
 761         case EDQUOT:            return WSAEDQUOT;
 762 #endif
 763 #ifdef ESTALE
 764         case ESTALE:            return WSAESTALE;
 765 #endif
 766 #ifdef EREMOTE
 767         case EREMOTE:           return WSAEREMOTE;
 768 #endif
 769     default: errno=err; perror("sock_set_error"); return WSAEFAULT;
 770     }
 771 #endif
 772     return err;
 773 }
 774
 775 /******************************************************************************
 776  * NETCON_secure_connect
 777  * Initiates a secure connection over an existing plaintext connection.
 778  */
 779 DWORD NETCON_secure_connect(netconn_t *connection)
 780 {
 781     DWORD res = ERROR_NOT_SUPPORTED;
 782 #ifdef SONAME_LIBSSL
 783     void *ssl_s;
 784     int bits;
 785
 786     /* can't connect if we are already connected */
 787     if (connection->ssl_s)
 788     {
 789         ERR("already connected\n");
 790         return ERROR_INTERNET_CANNOT_CONNECT;
 791     }
 792
 793     ssl_s = pSSL_new(ctx);
 794     if (!ssl_s)
 795     {
 796         ERR("SSL_new failed: %s\n",
 797             pERR_error_string(pERR_get_error(), 0));
 798         return ERROR_OUTOFMEMORY;
 799     }
 800
 801     if (!pSSL_set_fd(ssl_s, connection->socketFD))
 802     {
 803         ERR("SSL_set_fd failed: %s\n",
 804             pERR_error_string(pERR_get_error(), 0));
 805         res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 806         goto fail;
 807     }
 808
 809     if (!pSSL_set_ex_data(ssl_s, conn_idx, connection))
 810     {
 811         ERR("SSL_set_ex_data failed: %s\n",
 812             pERR_error_string(pERR_get_error(), 0));
 813         res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 814         goto fail;
 815     }
 816     if (pSSL_connect(ssl_s) <= 0)
 817     {
 818         res = (DWORD_PTR)pSSL_get_ex_data(ssl_s, error_idx);
 819         if (!res)
 820             res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 821         ERR("SSL_connect failed: %d\n", res);
 822         goto fail;
 823     }
 824
 825     connection->ssl_s = ssl_s;
 826
 827     bits = NETCON_GetCipherStrength(connection);
 828     if (bits >= 128)
 829         connection->security_flags |= SECURITY_FLAG_STRENGTH_STRONG;
 830     else if (bits >= 56)
 831         connection->security_flags |= SECURITY_FLAG_STRENGTH_MEDIUM;
 832     else
 833         connection->security_flags |= SECURITY_FLAG_STRENGTH_WEAK;
 834     connection->security_flags |= SECURITY_FLAG_SECURE;
 835
 836     if(connection->mask_errors)
 837         connection->server->security_flags = connection->security_flags;
 838     return ERROR_SUCCESS;
 839
 840 fail:
 841     if (ssl_s)
 842     {
 843         pSSL_shutdown(ssl_s);
 844         pSSL_free(ssl_s);
 845     }
 846 #endif
 847     return res;
 848 }
 849
 850 /******************************************************************************
 851  * NETCON_send
 852  * Basically calls 'send()' unless we should use SSL
 853  * number of chars send is put in *sent
 854  */
 855 DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags,
 856                 int *sent /* out */)
 857 {
 858     if (!connection->useSSL)
 859     {
 860         *sent = send(connection->socketFD, msg, len, flags);
 861         if (*sent == -1)
 862             return sock_get_error(errno);
 863         return ERROR_SUCCESS;
 864     }
 865     else
 866     {
 867 #ifdef SONAME_LIBSSL
 868         if(!connection->ssl_s) {
 869             FIXME("not connected\n");
 870             return ERROR_NOT_SUPPORTED;
 871         }
 872         if (flags)
 873             FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
 874         *sent = pSSL_write(connection->ssl_s, msg, len);
 875         if (*sent < 1 && len)
 876             return ERROR_INTERNET_CONNECTION_ABORTED;
 877         return ERROR_SUCCESS;
 878 #else
 879         return ERROR_NOT_SUPPORTED;
 880 #endif
 881     }
 882 }
 883
 884 /******************************************************************************
 885  * NETCON_recv
 886  * Basically calls 'recv()' unless we should use SSL
 887  * number of chars received is put in *recvd
 888  */
 889 DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, int flags,
 890                 int *recvd /* out */)
 891 {
 892     *recvd = 0;
 893     if (!len)
 894         return ERROR_SUCCESS;
 895     if (!connection->useSSL)
 896     {
 897         *recvd = recv(connection->socketFD, buf, len, flags);
 898         return *recvd == -1 ? sock_get_error(errno) :  ERROR_SUCCESS;
 899     }
 900     else
 901     {
 902 #ifdef SONAME_LIBSSL
 903         if(!connection->ssl_s) {
 904             FIXME("not connected\n");
 905             return ERROR_NOT_SUPPORTED;
 906         }
 907         *recvd = pSSL_read(connection->ssl_s, buf, len);
 908
 909         /* Check if EOF was received */
 910         if(!*recvd && (pSSL_get_error(connection->ssl_s, *recvd)==SSL_ERROR_ZERO_RETURN
 911                     || pSSL_get_error(connection->ssl_s, *recvd)==SSL_ERROR_SYSCALL))
 912             return ERROR_SUCCESS;
 913
 914         return *recvd > 0 ? ERROR_SUCCESS : ERROR_INTERNET_CONNECTION_ABORTED;
 915 #else
 916         return ERROR_NOT_SUPPORTED;
 917 #endif
 918     }
 919 }
 920
 921 /******************************************************************************
 922  * NETCON_query_data_available
 923  * Returns the number of bytes of peeked data plus the number of bytes of
 924  * queued, but unread data.
 925  */
 926 BOOL NETCON_query_data_available(netconn_t *connection, DWORD *available)
 927 {
 928     *available = 0;
 929
 930     if (!connection->useSSL)
 931     {
 932 #ifdef FIONREAD
 933         int unread;
 934         int retval = ioctlsocket(connection->socketFD, FIONREAD, &unread);
 935         if (!retval)
 936         {
 937             TRACE("%d bytes of queued, but unread data\n", unread);
 938             *available += unread;
 939         }
 940 #endif
 941     }
 942     else
 943     {
 944 #ifdef SONAME_LIBSSL
 945         *available = connection->ssl_s ? pSSL_pending(connection->ssl_s) : 0;
 946 #endif
 947     }
 948     return TRUE;
 949 }
 950
 951 BOOL NETCON_is_alive(netconn_t *netconn)
 952 {
 953 #ifdef MSG_DONTWAIT
 954     ssize_t len;
 955     BYTE b;
 956
 957     len = recv(netconn->socketFD, &b, 1, MSG_PEEK|MSG_DONTWAIT);
 958     return len == 1 || (len == -1 && errno == EWOULDBLOCK);
 959 #elif defined(__MINGW32__) || defined(_MSC_VER)
 960     ULONG mode;
 961     int len;
 962     char b;
 963
 964     mode = 1;
 965     if(!ioctlsocket(netconn->socketFD, FIONBIO, &mode))
 966         return FALSE;
 967
 968     len = recv(netconn->socketFD, &b, 1, MSG_PEEK);
 969
 970     mode = 0;
 971     if(!ioctlsocket(netconn->socketFD, FIONBIO, &mode))
 972         return FALSE;
 973
 974     return len == 1 || (len == -1 && errno == WSAEWOULDBLOCK);
 975 #else
 976     FIXME("not supported on this platform\n");
 977     return TRUE;
 978 #endif
 979 }
 980
 981 LPCVOID NETCON_GetCert(netconn_t *connection)
 982 {
 983 #ifdef SONAME_LIBSSL
 984     X509* cert;
 985     LPCVOID r = NULL;
 986
 987     if (!connection->ssl_s)
 988         return NULL;
 989
 990     cert = pSSL_get_peer_certificate(connection->ssl_s);
 991     r = X509_to_cert_context(cert);
 992     return r;
 993 #else
 994     return NULL;
 995 #endif
 996 }
 997
 998 int NETCON_GetCipherStrength(netconn_t *connection)
 999 {
1000 #ifdef SONAME_LIBSSL
1001 #if defined(OPENSSL_VERSION_NUMBER) && (OPENSSL_VERSION_NUMBER >= 0x0090707f)
1002     const SSL_CIPHER *cipher;
1003 #else
1004     SSL_CIPHER *cipher;
1005 #endif
1006     int bits = 0;
1007
1008     if (!connection->ssl_s)
1009         return 0;
1010     cipher = pSSL_get_current_cipher(connection->ssl_s);
1011     if (!cipher)
1012         return 0;
1013     pSSL_CIPHER_get_bits(cipher, &bits);
1014     return bits;
1015 #else
1016     return 0;
1017 #endif
1018 }
1019
1020 DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value)
1021 {
1022     int result;
1023     struct timeval tv;
1024
1025     /* value is in milliseconds, convert to struct timeval */
1026     if (value == INFINITE)
1027     {
1028         tv.tv_sec = 0;
1029         tv.tv_usec = 0;
1030     }
1031     else
1032     {
1033         tv.tv_sec = value / 1000;
1034         tv.tv_usec = (value % 1000) * 1000;
1035     }
1036     result = setsockopt(connection->socketFD, SOL_SOCKET,
1037                         send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
1038                         sizeof(tv));
1039     if (result == -1)
1040     {
1041         WARN("setsockopt failed (%s)\n", strerror(errno));
1042         return sock_get_error(errno);
1043     }
1044     return ERROR_SUCCESS;
1045 }