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 #if defined(__MINGW32__) || defined (_MSC_VER)
  27 #include <ws2tcpip.h>
  28 #endif
  29
  30 #include <sys/types.h>
  31 #ifdef HAVE_POLL_H
  32 #include <poll.h>
  33 #endif
  34 #ifdef HAVE_SYS_POLL_H
  35 # include <sys/poll.h>
  36 #endif
  37 #ifdef HAVE_SYS_TIME_H
  38 # include <sys/time.h>
  39 #endif
  40 #ifdef HAVE_SYS_SOCKET_H
  41 # include <sys/socket.h>
  42 #endif
  43 #ifdef HAVE_SYS_FILIO_H
  44 # include <sys/filio.h>
  45 #endif
  46 #ifdef HAVE_UNISTD_H
  47 # include <unistd.h>
  48 #endif
  49 #ifdef HAVE_SYS_IOCTL_H
  50 # include <sys/ioctl.h>
  51 #endif
  52 #include <time.h>
  53 #ifdef HAVE_NETDB_H
  54 # include <netdb.h>
  55 #endif
  56 #ifdef HAVE_NETINET_IN_H
  57 # include <netinet/in.h>
  58 #endif
  59 #ifdef HAVE_OPENSSL_SSL_H
  60 # include <openssl/ssl.h>
  61 #undef FAR
  62 #undef DSA
  63 #endif
  64
  65 #include <stdarg.h>
  66 #include <stdlib.h>
  67 #include <string.h>
  68 #include <stdio.h>
  69 #include <errno.h>
  70
  71 #include "wine/library.h"
  72 #include "windef.h"
  73 #include "winbase.h"
  74 #include "wininet.h"
  75 #include "winerror.h"
  76 #include "wincrypt.h"
  77
  78 #include "wine/debug.h"
  79 #include "internet.h"
  80
  81 /* To avoid conflicts with the Unix socket headers. we only need it for
  82  * the error codes anyway. */
  83 #define USE_WS_PREFIX
  84 #include "winsock2.h"
  85
  86 #define RESPONSE_TIMEOUT        30            /* FROM internet.c */
  87
  88
  89 WINE_DEFAULT_DEBUG_CHANNEL(wininet);
  90
  91 /* FIXME!!!!!!
  92  *    This should use winsock - To use winsock the functions will have to change a bit
  93  *        as they are designed for unix sockets.
  94  *    SSL stuff should use crypt32.dll
  95  */
  96
  97 #ifdef SONAME_LIBSSL
  98
  99 #include <openssl/err.h>
 100
 101 static CRITICAL_SECTION init_ssl_cs;
 102 static CRITICAL_SECTION_DEBUG init_ssl_cs_debug =
 103 {
 104     0, 0, &init_ssl_cs,
 105     { &init_ssl_cs_debug.ProcessLocksList,
 106       &init_ssl_cs_debug.ProcessLocksList },
 107     0, 0, { (DWORD_PTR)(__FILE__ ": init_ssl_cs") }
 108 };
 109 static CRITICAL_SECTION init_ssl_cs = { &init_ssl_cs_debug, -1, 0, 0, 0, 0 };
 110
 111 static void *OpenSSL_ssl_handle;
 112 static void *OpenSSL_crypto_handle;
 113
 114 static SSL_METHOD *meth;
 115 static SSL_CTX *ctx;
 116
 117 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
 118
 119 /* OpenSSL functions that we use */
 120 MAKE_FUNCPTR(SSL_library_init);
 121 MAKE_FUNCPTR(SSL_load_error_strings);
 122 MAKE_FUNCPTR(SSLv23_method);
 123 MAKE_FUNCPTR(SSL_CTX_free);
 124 MAKE_FUNCPTR(SSL_CTX_new);
 125 MAKE_FUNCPTR(SSL_new);
 126 MAKE_FUNCPTR(SSL_free);
 127 MAKE_FUNCPTR(SSL_set_fd);
 128 MAKE_FUNCPTR(SSL_connect);
 129 MAKE_FUNCPTR(SSL_shutdown);
 130 MAKE_FUNCPTR(SSL_write);
 131 MAKE_FUNCPTR(SSL_read);
 132 MAKE_FUNCPTR(SSL_pending);
 133 MAKE_FUNCPTR(SSL_get_verify_result);
 134 MAKE_FUNCPTR(SSL_get_peer_certificate);
 135 MAKE_FUNCPTR(SSL_CTX_get_timeout);
 136 MAKE_FUNCPTR(SSL_CTX_set_timeout);
 137 MAKE_FUNCPTR(SSL_CTX_set_default_verify_paths);
 138
 139 /* OpenSSL's libcrypto functions that we use */
 140 MAKE_FUNCPTR(BIO_new_fp);
 141 MAKE_FUNCPTR(CRYPTO_num_locks);
 142 MAKE_FUNCPTR(CRYPTO_set_id_callback);
 143 MAKE_FUNCPTR(CRYPTO_set_locking_callback);
 144 MAKE_FUNCPTR(ERR_get_error);
 145 MAKE_FUNCPTR(ERR_error_string);
 146 MAKE_FUNCPTR(i2d_X509);
 147 #undef MAKE_FUNCPTR
 148
 149 static CRITICAL_SECTION *ssl_locks;
 150
 151 static unsigned long ssl_thread_id(void)
 152 {
 153     return GetCurrentThreadId();
 154 }
 155
 156 static void ssl_lock_callback(int mode, int type, const char *file, int line)
 157 {
 158     if (mode & CRYPTO_LOCK)
 159         EnterCriticalSection(&ssl_locks[type]);
 160     else
 161         LeaveCriticalSection(&ssl_locks[type]);
 162 }
 163
 164 #endif
 165
 166 DWORD NETCON_init(WININET_NETCONNECTION *connection, BOOL useSSL)
 167 {
 168     connection->useSSL = FALSE;
 169     connection->socketFD = -1;
 170     if (useSSL)
 171     {
 172 #if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
 173         int i;
 174
 175         TRACE("using SSL connection\n");
 176         EnterCriticalSection(&init_ssl_cs);
 177         if (OpenSSL_ssl_handle) /* already initialized everything */
 178         {
 179             LeaveCriticalSection(&init_ssl_cs);
 180             return ERROR_SUCCESS;
 181         }
 182         OpenSSL_ssl_handle = wine_dlopen(SONAME_LIBSSL, RTLD_NOW, NULL, 0);
 183         if (!OpenSSL_ssl_handle)
 184         {
 185             ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
 186                 SONAME_LIBSSL);
 187             LeaveCriticalSection(&init_ssl_cs);
 188             return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 189         }
 190         OpenSSL_crypto_handle = wine_dlopen(SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0);
 191         if (!OpenSSL_crypto_handle)
 192         {
 193             ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
 194                 SONAME_LIBCRYPTO);
 195             LeaveCriticalSection(&init_ssl_cs);
 196             return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 197         }
 198
 199         /* mmm nice ugly macroness */
 200 #define DYNSSL(x) \
 201     p##x = wine_dlsym(OpenSSL_ssl_handle, #x, NULL, 0); \
 202     if (!p##x) \
 203     { \
 204         ERR("failed to load symbol %s\n", #x); \
 205         LeaveCriticalSection(&init_ssl_cs); \
 206         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
 207     }
 208
 209         DYNSSL(SSL_library_init);
 210         DYNSSL(SSL_load_error_strings);
 211         DYNSSL(SSLv23_method);
 212         DYNSSL(SSL_CTX_free);
 213         DYNSSL(SSL_CTX_new);
 214         DYNSSL(SSL_new);
 215         DYNSSL(SSL_free);
 216         DYNSSL(SSL_set_fd);
 217         DYNSSL(SSL_connect);
 218         DYNSSL(SSL_shutdown);
 219         DYNSSL(SSL_write);
 220         DYNSSL(SSL_read);
 221         DYNSSL(SSL_pending);
 222         DYNSSL(SSL_get_verify_result);
 223         DYNSSL(SSL_get_peer_certificate);
 224         DYNSSL(SSL_CTX_get_timeout);
 225         DYNSSL(SSL_CTX_set_timeout);
 226         DYNSSL(SSL_CTX_set_default_verify_paths);
 227 #undef DYNSSL
 228
 229 #define DYNCRYPTO(x) \
 230     p##x = wine_dlsym(OpenSSL_crypto_handle, #x, NULL, 0); \
 231     if (!p##x) \
 232     { \
 233         ERR("failed to load symbol %s\n", #x); \
 234         LeaveCriticalSection(&init_ssl_cs); \
 235         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR; \
 236     }
 237         DYNCRYPTO(BIO_new_fp);
 238         DYNCRYPTO(CRYPTO_num_locks);
 239         DYNCRYPTO(CRYPTO_set_id_callback);
 240         DYNCRYPTO(CRYPTO_set_locking_callback);
 241         DYNCRYPTO(ERR_get_error);
 242         DYNCRYPTO(ERR_error_string);
 243         DYNCRYPTO(i2d_X509);
 244 #undef DYNCRYPTO
 245
 246         pSSL_library_init();
 247         pSSL_load_error_strings();
 248         pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
 249
 250         meth = pSSLv23_method();
 251         ctx = pSSL_CTX_new(meth);
 252         if (!pSSL_CTX_set_default_verify_paths(ctx))
 253         {
 254             ERR("SSL_CTX_set_default_verify_paths failed: %s\n",
 255                 pERR_error_string(pERR_get_error(), 0));
 256             LeaveCriticalSection(&init_ssl_cs);
 257             return ERROR_OUTOFMEMORY;
 258         }
 259
 260         pCRYPTO_set_id_callback(ssl_thread_id);
 261         ssl_locks = HeapAlloc(GetProcessHeap(), 0,
 262                 pCRYPTO_num_locks() * sizeof(CRITICAL_SECTION));
 263         if (!ssl_locks)
 264         {
 265             LeaveCriticalSection(&init_ssl_cs);
 266             return ERROR_OUTOFMEMORY;
 267         }
 268         for (i = 0; i < pCRYPTO_num_locks(); i++)
 269             InitializeCriticalSection(&ssl_locks[i]);
 270         pCRYPTO_set_locking_callback(ssl_lock_callback);
 271         LeaveCriticalSection(&init_ssl_cs);
 272 #else
 273         FIXME("can't use SSL, not compiled in.\n");
 274         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 275 #endif
 276     }
 277     return ERROR_SUCCESS;
 278 }
 279
 280 void NETCON_unload(void)
 281 {
 282 #if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
 283     if (OpenSSL_crypto_handle)
 284     {
 285         wine_dlclose(OpenSSL_crypto_handle, NULL, 0);
 286     }
 287     if (OpenSSL_ssl_handle)
 288     {
 289         if (ctx)
 290             pSSL_CTX_free(ctx);
 291         wine_dlclose(OpenSSL_ssl_handle, NULL, 0);
 292     }
 293     if (ssl_locks)
 294     {
 295         int i;
 296         for (i = 0; i < pCRYPTO_num_locks(); i++) DeleteCriticalSection(&ssl_locks[i]);
 297         HeapFree(GetProcessHeap(), 0, ssl_locks);
 298     }
 299 #endif
 300 }
 301
 302 BOOL NETCON_connected(WININET_NETCONNECTION *connection)
 303 {
 304     if (connection->socketFD == -1)
 305         return FALSE;
 306     else
 307         return TRUE;
 308 }
 309
 310 /* translate a unix error code into a winsock one */
 311 int sock_get_error( int err )
 312 {
 313 #if !defined(__MINGW32__) && !defined (_MSC_VER)
 314     switch (err)
 315     {
 316         case EINTR:             return WSAEINTR;
 317         case EBADF:             return WSAEBADF;
 318         case EPERM:
 319         case EACCES:            return WSAEACCES;
 320         case EFAULT:            return WSAEFAULT;
 321         case EINVAL:            return WSAEINVAL;
 322         case EMFILE:            return WSAEMFILE;
 323         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 324         case EINPROGRESS:       return WSAEINPROGRESS;
 325         case EALREADY:          return WSAEALREADY;
 326         case ENOTSOCK:          return WSAENOTSOCK;
 327         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 328         case EMSGSIZE:          return WSAEMSGSIZE;
 329         case EPROTOTYPE:        return WSAEPROTOTYPE;
 330         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 331         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 332         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 333         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 334         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 335         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 336         case EADDRINUSE:        return WSAEADDRINUSE;
 337         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 338         case ENETDOWN:          return WSAENETDOWN;
 339         case ENETUNREACH:       return WSAENETUNREACH;
 340         case ENETRESET:         return WSAENETRESET;
 341         case ECONNABORTED:      return WSAECONNABORTED;
 342         case EPIPE:
 343         case ECONNRESET:        return WSAECONNRESET;
 344         case ENOBUFS:           return WSAENOBUFS;
 345         case EISCONN:           return WSAEISCONN;
 346         case ENOTCONN:          return WSAENOTCONN;
 347         case ESHUTDOWN:         return WSAESHUTDOWN;
 348         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 349         case ETIMEDOUT:         return WSAETIMEDOUT;
 350         case ECONNREFUSED:      return WSAECONNREFUSED;
 351         case ELOOP:             return WSAELOOP;
 352         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 353         case EHOSTDOWN:         return WSAEHOSTDOWN;
 354         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 355         case ENOTEMPTY:         return WSAENOTEMPTY;
 356 #ifdef EPROCLIM
 357         case EPROCLIM:          return WSAEPROCLIM;
 358 #endif
 359 #ifdef EUSERS
 360         case EUSERS:            return WSAEUSERS;
 361 #endif
 362 #ifdef EDQUOT
 363         case EDQUOT:            return WSAEDQUOT;
 364 #endif
 365 #ifdef ESTALE
 366         case ESTALE:            return WSAESTALE;
 367 #endif
 368 #ifdef EREMOTE
 369         case EREMOTE:           return WSAEREMOTE;
 370 #endif
 371     default: errno=err; perror("sock_set_error"); return WSAEFAULT;
 372     }
 373 #endif
 374     return err;
 375 }
 376
 377 /******************************************************************************
 378  * NETCON_create
 379  * Basically calls 'socket()'
 380  */
 381 DWORD NETCON_create(WININET_NETCONNECTION *connection, int domain,
 382               int type, int protocol)
 383 {
 384 #ifdef SONAME_LIBSSL
 385     if (connection->useSSL)
 386         return ERROR_NOT_SUPPORTED;
 387 #endif
 388
 389     connection->socketFD = socket(domain, type, protocol);
 390     if (connection->socketFD == -1)
 391         return sock_get_error(errno);
 392
 393     return ERROR_SUCCESS;
 394 }
 395
 396 /******************************************************************************
 397  * NETCON_close
 398  * Basically calls 'close()' unless we should use SSL
 399  */
 400 DWORD NETCON_close(WININET_NETCONNECTION *connection)
 401 {
 402     int result;
 403
 404     if (!NETCON_connected(connection)) return ERROR_SUCCESS;
 405
 406 #ifdef SONAME_LIBSSL
 407     if (connection->useSSL)
 408     {
 409         pSSL_shutdown(connection->ssl_s);
 410         pSSL_free(connection->ssl_s);
 411         connection->ssl_s = NULL;
 412
 413         connection->useSSL = FALSE;
 414     }
 415 #endif
 416
 417     result = closesocket(connection->socketFD);
 418     connection->socketFD = -1;
 419
 420     if (result == -1)
 421         return sock_get_error(errno);
 422     return ERROR_SUCCESS;
 423 }
 424 #ifdef SONAME_LIBSSL
 425 static BOOL check_hostname(X509 *cert, char *hostname)
 426 {
 427     /* FIXME: implement */
 428     return TRUE;
 429 }
 430 #endif
 431 /******************************************************************************
 432  * NETCON_secure_connect
 433  * Initiates a secure connection over an existing plaintext connection.
 434  */
 435 DWORD NETCON_secure_connect(WININET_NETCONNECTION *connection, LPCWSTR hostname)
 436 {
 437     DWORD res = ERROR_NOT_SUPPORTED;
 438 #ifdef SONAME_LIBSSL
 439     long verify_res;
 440     X509 *cert;
 441     int len;
 442     char *hostname_unix;
 443
 444     /* can't connect if we are already connected */
 445     if (connection->useSSL)
 446     {
 447         ERR("already connected\n");
 448         return ERROR_INTERNET_CANNOT_CONNECT;
 449     }
 450
 451     connection->ssl_s = pSSL_new(ctx);
 452     if (!connection->ssl_s)
 453     {
 454         ERR("SSL_new failed: %s\n",
 455             pERR_error_string(pERR_get_error(), 0));
 456         res = ERROR_OUTOFMEMORY;
 457         goto fail;
 458     }
 459
 460     if (!pSSL_set_fd(connection->ssl_s, connection->socketFD))
 461     {
 462         ERR("SSL_set_fd failed: %s\n",
 463             pERR_error_string(pERR_get_error(), 0));
 464         res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 465         goto fail;
 466     }
 467
 468     if (pSSL_connect(connection->ssl_s) <= 0)
 469     {
 470         ERR("SSL_connect failed: %s\n",
 471             pERR_error_string(pERR_get_error(), 0));
 472         res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 473         goto fail;
 474     }
 475     cert = pSSL_get_peer_certificate(connection->ssl_s);
 476     if (!cert)
 477     {
 478         ERR("no certificate for server %s\n", debugstr_w(hostname));
 479         /* FIXME: is this the best error? */
 480         res = ERROR_INTERNET_INVALID_CA;
 481         goto fail;
 482     }
 483     verify_res = pSSL_get_verify_result(connection->ssl_s);
 484     if (verify_res != X509_V_OK)
 485     {
 486         ERR("couldn't verify the security of the connection, %ld\n", verify_res);
 487         /* FIXME: we should set an error and return, but we only warn at
 488          * the moment */
 489     }
 490
 491     len = WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, NULL, 0, NULL, NULL);
 492     hostname_unix = HeapAlloc(GetProcessHeap(), 0, len);
 493     if (!hostname_unix)
 494     {
 495         res = ERROR_OUTOFMEMORY;
 496         goto fail;
 497     }
 498     WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, hostname_unix, len, NULL, NULL);
 499
 500     if (!check_hostname(cert, hostname_unix))
 501     {
 502         HeapFree(GetProcessHeap(), 0, hostname_unix);
 503         res = ERROR_INTERNET_SEC_CERT_CN_INVALID;
 504         goto fail;
 505     }
 506
 507     HeapFree(GetProcessHeap(), 0, hostname_unix);
 508     connection->useSSL = TRUE;
 509     return ERROR_SUCCESS;
 510
 511 fail:
 512     if (connection->ssl_s)
 513     {
 514         pSSL_shutdown(connection->ssl_s);
 515         pSSL_free(connection->ssl_s);
 516         connection->ssl_s = NULL;
 517     }
 518 #endif
 519     return res;
 520 }
 521
 522 /******************************************************************************
 523  * NETCON_connect
 524  * Connects to the specified address.
 525  */
 526 DWORD NETCON_connect(WININET_NETCONNECTION *connection, const struct sockaddr *serv_addr,
 527                     unsigned int addrlen)
 528 {
 529     int result;
 530
 531     result = connect(connection->socketFD, serv_addr, addrlen);
 532     if (result == -1)
 533     {
 534         WARN("Unable to connect to host (%s)\n", strerror(errno));
 535
 536         closesocket(connection->socketFD);
 537         connection->socketFD = -1;
 538         return sock_get_error(errno);
 539     }
 540
 541     return ERROR_SUCCESS;
 542 }
 543
 544 /******************************************************************************
 545  * NETCON_send
 546  * Basically calls 'send()' unless we should use SSL
 547  * number of chars send is put in *sent
 548  */
 549 DWORD NETCON_send(WININET_NETCONNECTION *connection, const void *msg, size_t len, int flags,
 550                 int *sent /* out */)
 551 {
 552     if (!NETCON_connected(connection)) return ERROR_INTERNET_CONNECTION_ABORTED;
 553     if (!connection->useSSL)
 554     {
 555         *sent = send(connection->socketFD, msg, len, flags);
 556         if (*sent == -1)
 557             return sock_get_error(errno);
 558         return ERROR_SUCCESS;
 559     }
 560     else
 561     {
 562 #ifdef SONAME_LIBSSL
 563         if (flags)
 564             FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
 565         *sent = pSSL_write(connection->ssl_s, msg, len);
 566         if (*sent < 1 && len)
 567             return ERROR_INTERNET_CONNECTION_ABORTED;
 568         return ERROR_SUCCESS;
 569 #else
 570         return ERROR_NOT_SUPPORTED;
 571 #endif
 572     }
 573 }
 574
 575 /******************************************************************************
 576  * NETCON_recv
 577  * Basically calls 'recv()' unless we should use SSL
 578  * number of chars received is put in *recvd
 579  */
 580 DWORD NETCON_recv(WININET_NETCONNECTION *connection, void *buf, size_t len, int flags,
 581                 int *recvd /* out */)
 582 {
 583     *recvd = 0;
 584     if (!NETCON_connected(connection)) return ERROR_INTERNET_CONNECTION_ABORTED;
 585     if (!len)
 586         return ERROR_SUCCESS;
 587     if (!connection->useSSL)
 588     {
 589         *recvd = recv(connection->socketFD, buf, len, flags);
 590         return *recvd == -1 ? sock_get_error(errno) :  ERROR_SUCCESS;
 591     }
 592     else
 593     {
 594 #ifdef SONAME_LIBSSL
 595         *recvd = pSSL_read(connection->ssl_s, buf, len);
 596         return *recvd > 0 ? ERROR_SUCCESS : ERROR_INTERNET_CONNECTION_ABORTED;
 597 #else
 598         return ERROR_NOT_SUPPORTED;
 599 #endif
 600     }
 601 }
 602
 603 /******************************************************************************
 604  * NETCON_query_data_available
 605  * Returns the number of bytes of peeked data plus the number of bytes of
 606  * queued, but unread data.
 607  */
 608 BOOL NETCON_query_data_available(WININET_NETCONNECTION *connection, DWORD *available)
 609 {
 610     *available = 0;
 611     if (!NETCON_connected(connection))
 612         return FALSE;
 613
 614     if (!connection->useSSL)
 615     {
 616 #ifdef FIONREAD
 617         int unread;
 618         int retval = ioctlsocket(connection->socketFD, FIONREAD, &unread);
 619         if (!retval)
 620         {
 621             TRACE("%d bytes of queued, but unread data\n", unread);
 622             *available += unread;
 623         }
 624 #endif
 625     }
 626     else
 627     {
 628 #ifdef SONAME_LIBSSL
 629         *available = pSSL_pending(connection->ssl_s);
 630 #endif
 631     }
 632     return TRUE;
 633 }
 634
 635 LPCVOID NETCON_GetCert(WININET_NETCONNECTION *connection)
 636 {
 637 #ifdef SONAME_LIBSSL
 638     X509* cert;
 639     unsigned char* buffer,*p;
 640     INT len;
 641     BOOL malloced = FALSE;
 642     LPCVOID r = NULL;
 643
 644     if (!connection->useSSL)
 645         return NULL;
 646
 647     cert = pSSL_get_peer_certificate(connection->ssl_s);
 648     p = NULL;
 649     len = pi2d_X509(cert,&p);
 650     /*
 651      * SSL 0.9.7 and above malloc the buffer if it is null.
 652      * however earlier version do not and so we would need to alloc the buffer.
 653      *
 654      * see the i2d_X509 man page for more details.
 655      */
 656     if (!p)
 657     {
 658         buffer = HeapAlloc(GetProcessHeap(),0,len);
 659         p = buffer;
 660         len = pi2d_X509(cert,&p);
 661     }
 662     else
 663     {
 664         buffer = p;
 665         malloced = TRUE;
 666     }
 667
 668     r = CertCreateCertificateContext(X509_ASN_ENCODING,buffer,len);
 669
 670     if (malloced)
 671         free(buffer);
 672     else
 673         HeapFree(GetProcessHeap(),0,buffer);
 674
 675     return r;
 676 #else
 677     return NULL;
 678 #endif
 679 }
 680
 681 DWORD NETCON_set_timeout(WININET_NETCONNECTION *connection, BOOL send, int value)
 682 {
 683     int result;
 684     struct timeval tv;
 685
 686     /* FIXME: we should probably store the timeout in the connection to set
 687      * when we do connect */
 688     if (!NETCON_connected(connection))
 689         return ERROR_SUCCESS;
 690
 691     /* value is in milliseconds, convert to struct timeval */
 692     tv.tv_sec = value / 1000;
 693     tv.tv_usec = (value % 1000) * 1000;
 694
 695     result = setsockopt(connection->socketFD, SOL_SOCKET,
 696                         send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
 697                         sizeof(tv));
 698
 699     if (result == -1)
 700     {
 701         WARN("setsockopt failed (%s)\n", strerror(errno));
 702         return sock_get_error(errno);
 703     }
 704
 705     return ERROR_SUCCESS;
 706 }