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