dll/win32/winhttp/net.c

   1 /*
   2  * Copyright 2008 Hans Leidekker for CodeWeavers
   3  * Copyright 2013 Jacek Caban for CodeWeavers
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "winhttp_private.h"
  21
  22 #include <assert.h>
  23 #include <schannel.h>
  24
  25 #ifdef HAVE_SYS_SOCKET_H
  26 # include <sys/socket.h>
  27 #endif
  28 #ifdef HAVE_SYS_IOCTL_H
  29 # include <sys/ioctl.h>
  30 #endif
  31 #ifdef HAVE_SYS_FILIO_H
  32 # include <sys/filio.h>
  33 #endif
  34 #ifdef HAVE_POLL_H
  35 # include <poll.h>
  36 #endif
  37
  38 #ifndef HAVE_GETADDRINFO
  39
  40 /* critical section to protect non-reentrant gethostbyname() */
  41 static CRITICAL_SECTION cs_gethostbyname;
  42 static CRITICAL_SECTION_DEBUG critsect_debug =
  43 {
  44     0, 0, &cs_gethostbyname,
  45     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  46       0, 0, { (DWORD_PTR)(__FILE__ ": cs_gethostbyname") }
  47 };
  48 static CRITICAL_SECTION cs_gethostbyname = { &critsect_debug, -1, 0, 0, 0, 0 };
  49
  50 #endif
  51
  52 /* translate a unix error code into a winsock error code */
  53 #ifndef __REACTOS__
  54 static int sock_get_error( int err )
  55 {
  56 #if !defined(__MINGW32__) && !defined (_MSC_VER)
  57     switch (err)
  58     {
  59         case EINTR:             return WSAEINTR;
  60         case EBADF:             return WSAEBADF;
  61         case EPERM:
  62         case EACCES:            return WSAEACCES;
  63         case EFAULT:            return WSAEFAULT;
  64         case EINVAL:            return WSAEINVAL;
  65         case EMFILE:            return WSAEMFILE;
  66         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
  67         case EINPROGRESS:       return WSAEINPROGRESS;
  68         case EALREADY:          return WSAEALREADY;
  69         case ENOTSOCK:          return WSAENOTSOCK;
  70         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
  71         case EMSGSIZE:          return WSAEMSGSIZE;
  72         case EPROTOTYPE:        return WSAEPROTOTYPE;
  73         case ENOPROTOOPT:       return WSAENOPROTOOPT;
  74         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
  75         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
  76         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
  77         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
  78         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
  79         case EADDRINUSE:        return WSAEADDRINUSE;
  80         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
  81         case ENETDOWN:          return WSAENETDOWN;
  82         case ENETUNREACH:       return WSAENETUNREACH;
  83         case ENETRESET:         return WSAENETRESET;
  84         case ECONNABORTED:      return WSAECONNABORTED;
  85         case EPIPE:
  86         case ECONNRESET:        return WSAECONNRESET;
  87         case ENOBUFS:           return WSAENOBUFS;
  88         case EISCONN:           return WSAEISCONN;
  89         case ENOTCONN:          return WSAENOTCONN;
  90         case ESHUTDOWN:         return WSAESHUTDOWN;
  91         case ETOOMANYREFS:      return WSAETOOMANYREFS;
  92         case ETIMEDOUT:         return WSAETIMEDOUT;
  93         case ECONNREFUSED:      return WSAECONNREFUSED;
  94         case ELOOP:             return WSAELOOP;
  95         case ENAMETOOLONG:      return WSAENAMETOOLONG;
  96         case EHOSTDOWN:         return WSAEHOSTDOWN;
  97         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
  98         case ENOTEMPTY:         return WSAENOTEMPTY;
  99 #ifdef EPROCLIM
 100         case EPROCLIM:          return WSAEPROCLIM;
 101 #endif
 102 #ifdef EUSERS
 103         case EUSERS:            return WSAEUSERS;
 104 #endif
 105 #ifdef EDQUOT
 106         case EDQUOT:            return WSAEDQUOT;
 107 #endif
 108 #ifdef ESTALE
 109         case ESTALE:            return WSAESTALE;
 110 #endif
 111 #ifdef EREMOTE
 112         case EREMOTE:           return WSAEREMOTE;
 113 #endif
 114     default: errno = err; perror( "sock_set_error" ); return WSAEFAULT;
 115     }
 116 #endif
 117     return err;
 118 }
 119 #else
 120 #define sock_get_error(x) WSAGetLastError()
 121
 122 static inline int unix_ioctl(int filedes, long request, void *arg)
 123 {
 124     return ioctlsocket(filedes, request, arg);
 125 }
 126 #define ioctlsocket unix_ioctl
 127 #endif
 128
 129 static int sock_send(int fd, const void *msg, size_t len, int flags)
 130 {
 131     int ret;
 132     do
 133     {
 134         if ((ret = send(fd, msg, len, flags)) == -1) WARN("send error %s\n", strerror(errno));
 135     }
 136     while(ret == -1 && errno == EINTR);
 137     return ret;
 138 }
 139
 140 static int sock_recv(int fd, void *msg, size_t len, int flags)
 141 {
 142     int ret;
 143     do
 144     {
 145         if ((ret = recv(fd, msg, len, flags)) == -1) WARN("recv error %s\n", strerror(errno));
 146     }
 147     while(ret == -1 && errno == EINTR);
 148     return ret;
 149 }
 150
 151 static DWORD netconn_verify_cert( PCCERT_CONTEXT cert, WCHAR *server, DWORD security_flags )
 152 {
 153     HCERTSTORE store = cert->hCertStore;
 154     BOOL ret;
 155     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
 156     PCCERT_CHAIN_CONTEXT chain;
 157     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
 158     char *server_auth[] = { oid_server_auth };
 159     DWORD err = ERROR_SUCCESS;
 160
 161     TRACE("verifying %s\n", debugstr_w( server ));
 162     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
 163     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
 164     if ((ret = CertGetCertificateChain( NULL, cert, NULL, store, &chainPara,
 165                                         CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT,
 166                                         NULL, &chain )))
 167     {
 168         if (chain->TrustStatus.dwErrorStatus)
 169         {
 170             static const DWORD supportedErrors =
 171                 CERT_TRUST_IS_NOT_TIME_VALID |
 172                 CERT_TRUST_IS_UNTRUSTED_ROOT |
 173                 CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 174
 175             if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_NOT_TIME_VALID)
 176             {
 177                 if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID))
 178                     err = ERROR_WINHTTP_SECURE_CERT_DATE_INVALID;
 179             }
 180             else if (chain->TrustStatus.dwErrorStatus &
 181                      CERT_TRUST_IS_UNTRUSTED_ROOT)
 182             {
 183                 if (!(security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA))
 184                     err = ERROR_WINHTTP_SECURE_INVALID_CA;
 185             }
 186             else if ((chain->TrustStatus.dwErrorStatus &
 187                       CERT_TRUST_IS_OFFLINE_REVOCATION) ||
 188                      (chain->TrustStatus.dwErrorStatus &
 189                       CERT_TRUST_REVOCATION_STATUS_UNKNOWN))
 190                 err = ERROR_WINHTTP_SECURE_CERT_REV_FAILED;
 191             else if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_REVOKED)
 192                 err = ERROR_WINHTTP_SECURE_CERT_REVOKED;
 193             else if (chain->TrustStatus.dwErrorStatus &
 194                 CERT_TRUST_IS_NOT_VALID_FOR_USAGE)
 195             {
 196                 if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE))
 197                     err = ERROR_WINHTTP_SECURE_CERT_WRONG_USAGE;
 198             }
 199             else if (chain->TrustStatus.dwErrorStatus & ~supportedErrors)
 200                 err = ERROR_WINHTTP_SECURE_INVALID_CERT;
 201         }
 202         if (!err)
 203         {
 204             CERT_CHAIN_POLICY_PARA policyPara;
 205             SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
 206             CERT_CHAIN_POLICY_STATUS policyStatus;
 207             CERT_CHAIN_CONTEXT chainCopy;
 208
 209             /* Clear chain->TrustStatus.dwErrorStatus so
 210              * CertVerifyCertificateChainPolicy will verify additional checks
 211              * rather than stopping with an existing, ignored error.
 212              */
 213             memcpy(&chainCopy, chain, sizeof(chainCopy));
 214             chainCopy.TrustStatus.dwErrorStatus = 0;
 215             sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
 216             sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
 217             sslExtraPolicyPara.pwszServerName = server;
 218             sslExtraPolicyPara.fdwChecks = security_flags;
 219             policyPara.cbSize = sizeof(policyPara);
 220             policyPara.dwFlags = 0;
 221             policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
 222             ret = CertVerifyCertificateChainPolicy( CERT_CHAIN_POLICY_SSL,
 223                                                     &chainCopy, &policyPara,
 224                                                     &policyStatus );
 225             /* Any error in the policy status indicates that the
 226              * policy couldn't be verified.
 227              */
 228             if (ret && policyStatus.dwError)
 229             {
 230                 if (policyStatus.dwError == CERT_E_CN_NO_MATCH)
 231                     err = ERROR_WINHTTP_SECURE_CERT_CN_INVALID;
 232                 else
 233                     err = ERROR_WINHTTP_SECURE_INVALID_CERT;
 234             }
 235         }
 236         CertFreeCertificateChain( chain );
 237     }
 238     else
 239         err = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 240     TRACE("returning %08x\n", err);
 241     return err;
 242 }
 243
 244 #ifdef __REACTOS__
 245 static BOOL winsock_initialized = FALSE;
 246 BOOL netconn_init_winsock()
 247 {
 248     WSADATA wsaData;
 249     int error;
 250     if (!winsock_initialized)
 251     {
 252         error = WSAStartup(MAKEWORD(1, 1), &wsaData);
 253         if (error)
 254         {
 255             ERR("WSAStartup failed: %d\n", error);
 256             return FALSE;
 257         }
 258         else
 259             winsock_initialized = TRUE;
 260     }
 261     return winsock_initialized;
 262 }
 263
 264 #endif
 265
 266 void netconn_unload( void )
 267 {
 268 #ifndef HAVE_GETADDRINFO
 269     DeleteCriticalSection(&cs_gethostbyname);
 270 #endif
 271 #ifdef __REACTOS__
 272     if(winsock_initialized)
 273         WSACleanup();
 274 #endif
 275 }
 276
 277 netconn_t *netconn_create( hostdata_t *host, const struct sockaddr_storage *sockaddr, int timeout )
 278 {
 279     netconn_t *conn;
 280     unsigned int addr_len;
 281     BOOL ret = FALSE;
 282     int res;
 283     ULONG state;
 284
 285     conn = heap_alloc_zero(sizeof(*conn));
 286     if (!conn) return NULL;
 287     conn->host = host;
 288     conn->sockaddr = *sockaddr;
 289     if ((conn->socket = socket( sockaddr->ss_family, SOCK_STREAM, 0 )) == -1)
 290     {
 291         WARN("unable to create socket (%s)\n", strerror(errno));
 292         set_last_error( sock_get_error( errno ) );
 293         heap_free(conn);
 294         return NULL;
 295     }
 296
 297     switch (conn->sockaddr.ss_family)
 298     {
 299     case AF_INET:
 300         addr_len = sizeof(struct sockaddr_in);
 301         break;
 302     case AF_INET6:
 303         addr_len = sizeof(struct sockaddr_in6);
 304         break;
 305     default:
 306         assert(0);
 307     }
 308
 309     if (timeout > 0)
 310     {
 311         state = 1;
 312         ioctlsocket( conn->socket, FIONBIO, &state );
 313     }
 314
 315     for (;;)
 316     {
 317         res = 0;
 318         if (connect( conn->socket, (const struct sockaddr *)&conn->sockaddr, addr_len ) < 0)
 319         {
 320             res = sock_get_error( errno );
 321             if (res == WSAEWOULDBLOCK || res == WSAEINPROGRESS)
 322             {
 323 #ifdef __REACTOS__
 324                 /* ReactOS: use select instead of poll */
 325                 fd_set outfd;
 326                 struct timeval tv;
 327
 328                 FD_ZERO(&outfd);
 329                 FD_SET(conn->socket, &outfd);
 330
 331                 tv.tv_sec = 0;
 332                 tv.tv_usec = timeout * 1000;
 333                 for (;;)
 334                 {
 335                     res = 0;
 336
 337                     if (select( 0, NULL, &outfd, NULL, &tv ) > 0)
 338 #else
 339                 struct pollfd pfd;
 340
 341                 pfd.fd = conn->socket;
 342                 pfd.events = POLLOUT;
 343                 for (;;)
 344                 {
 345                     res = 0;
 346                     if (poll( &pfd, 1, timeout ) > 0)
 347 #endif
 348                     {
 349                         ret = TRUE;
 350                         break;
 351                     }
 352                     else
 353                     {
 354                         res = sock_get_error( errno );
 355                         if (res != WSAEINTR) break;
 356                     }
 357                 }
 358             }
 359             if (res != WSAEINTR) break;
 360         }
 361         else
 362         {
 363             ret = TRUE;
 364             break;
 365         }
 366     }
 367     if (timeout > 0)
 368     {
 369         state = 0;
 370         ioctlsocket( conn->socket, FIONBIO, &state );
 371     }
 372     if (!ret)
 373     {
 374         WARN("unable to connect to host (%d)\n", res);
 375         set_last_error( res );
 376         netconn_close( conn );
 377         return NULL;
 378     }
 379     return conn;
 380 }
 381
 382 BOOL netconn_close( netconn_t *conn )
 383 {
 384     int res;
 385
 386     if (conn->secure)
 387     {
 388         heap_free( conn->peek_msg_mem );
 389         heap_free(conn->ssl_buf);
 390         heap_free(conn->extra_buf);
 391         DeleteSecurityContext(&conn->ssl_ctx);
 392     }
 393     res = closesocket( conn->socket );
 394     release_host( conn->host );
 395     heap_free(conn);
 396     if (res == -1)
 397     {
 398         set_last_error( sock_get_error( errno ) );
 399         return FALSE;
 400     }
 401     return TRUE;
 402 }
 403
 404 BOOL netconn_secure_connect( netconn_t *conn, WCHAR *hostname, DWORD security_flags, CredHandle *cred_handle )
 405 {
 406     SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
 407     SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
 408     BYTE *read_buf;
 409     SIZE_T read_buf_size = 2048;
 410     ULONG attrs = 0;
 411     CtxtHandle ctx;
 412     SSIZE_T size;
 413     const CERT_CONTEXT *cert;
 414     SECURITY_STATUS status;
 415     DWORD res = ERROR_SUCCESS;
 416
 417     const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
 418         |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
 419
 420     read_buf = heap_alloc(read_buf_size);
 421     if(!read_buf)
 422         return FALSE;
 423
 424     status = InitializeSecurityContextW(cred_handle, NULL, hostname, isc_req_flags, 0, 0, NULL, 0,
 425             &ctx, &out_desc, &attrs, NULL);
 426
 427     assert(status != SEC_E_OK);
 428
 429     while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
 430         if(out_buf.cbBuffer) {
 431             assert(status == SEC_I_CONTINUE_NEEDED);
 432
 433             TRACE("sending %u bytes\n", out_buf.cbBuffer);
 434
 435             size = sock_send(conn->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
 436             if(size != out_buf.cbBuffer) {
 437                 ERR("send failed\n");
 438                 res = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 439                 break;
 440             }
 441
 442             FreeContextBuffer(out_buf.pvBuffer);
 443             out_buf.pvBuffer = NULL;
 444             out_buf.cbBuffer = 0;
 445         }
 446
 447         if(status == SEC_I_CONTINUE_NEEDED) {
 448             assert(in_bufs[1].cbBuffer < read_buf_size);
 449
 450             memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
 451             in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
 452
 453             in_bufs[1].BufferType = SECBUFFER_EMPTY;
 454             in_bufs[1].cbBuffer = 0;
 455             in_bufs[1].pvBuffer = NULL;
 456         }
 457
 458         assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
 459         assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
 460
 461         if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
 462             BYTE *new_read_buf;
 463
 464             new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
 465             if(!new_read_buf) {
 466                 status = E_OUTOFMEMORY;
 467                 break;
 468             }
 469
 470             in_bufs[0].pvBuffer = read_buf = new_read_buf;
 471             read_buf_size += 1024;
 472         }
 473
 474         size = sock_recv(conn->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
 475         if(size < 1) {
 476             status = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 477             break;
 478         }
 479
 480         TRACE("recv %lu bytes\n", size);
 481
 482         in_bufs[0].cbBuffer += size;
 483         in_bufs[0].pvBuffer = read_buf;
 484         status = InitializeSecurityContextW(cred_handle, &ctx, hostname,  isc_req_flags, 0, 0, &in_desc,
 485                 0, NULL, &out_desc, &attrs, NULL);
 486         TRACE("InitializeSecurityContext ret %08x\n", status);
 487
 488         if(status == SEC_E_OK) {
 489             if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
 490                 FIXME("SECBUFFER_EXTRA not supported\n");
 491
 492             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &conn->ssl_sizes);
 493             if(status != SEC_E_OK) {
 494                 WARN("Could not get sizes\n");
 495                 break;
 496             }
 497
 498             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
 499             if(status == SEC_E_OK) {
 500                 res = netconn_verify_cert(cert, hostname, security_flags);
 501                 CertFreeCertificateContext(cert);
 502                 if(res != ERROR_SUCCESS) {
 503                     WARN("cert verify failed: %u\n", res);
 504                     break;
 505                 }
 506             }else {
 507                 WARN("Could not get cert\n");
 508                 break;
 509             }
 510
 511             conn->ssl_buf = heap_alloc(conn->ssl_sizes.cbHeader + conn->ssl_sizes.cbMaximumMessage + conn->ssl_sizes.cbTrailer);
 512             if(!conn->ssl_buf) {
 513                 res = GetLastError();
 514                 break;
 515             }
 516         }
 517     }
 518
 519     heap_free(read_buf);
 520
 521     if(status != SEC_E_OK || res != ERROR_SUCCESS) {
 522         WARN("Failed to initialize security context failed: %08x\n", status);
 523         heap_free(conn->ssl_buf);
 524         conn->ssl_buf = NULL;
 525         DeleteSecurityContext(&ctx);
 526         set_last_error(res ? res : ERROR_WINHTTP_SECURE_CHANNEL_ERROR);
 527         return FALSE;
 528     }
 529
 530
 531     TRACE("established SSL connection\n");
 532     conn->secure = TRUE;
 533     conn->ssl_ctx = ctx;
 534     return TRUE;
 535 }
 536
 537 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
 538 {
 539     SecBuffer bufs[4] = {
 540         {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
 541         {size,  SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
 542         {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
 543         {0, SECBUFFER_EMPTY, NULL}
 544     };
 545     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 546     SECURITY_STATUS res;
 547
 548     memcpy(bufs[1].pvBuffer, msg, size);
 549     res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
 550     if(res != SEC_E_OK) {
 551         WARN("EncryptMessage failed\n");
 552         return FALSE;
 553     }
 554
 555     if(sock_send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
 556         WARN("send failed\n");
 557         return FALSE;
 558     }
 559
 560     return TRUE;
 561 }
 562
 563 BOOL netconn_send( netconn_t *conn, const void *msg, size_t len, int *sent )
 564 {
 565     if (conn->secure)
 566     {
 567         const BYTE *ptr = msg;
 568         size_t chunk_size;
 569
 570         *sent = 0;
 571
 572         while(len) {
 573             chunk_size = min(len, conn->ssl_sizes.cbMaximumMessage);
 574             if(!send_ssl_chunk(conn, ptr, chunk_size))
 575                 return FALSE;
 576
 577             *sent += chunk_size;
 578             ptr += chunk_size;
 579             len -= chunk_size;
 580         }
 581
 582         return TRUE;
 583     }
 584     if ((*sent = sock_send( conn->socket, msg, len, 0 )) == -1)
 585     {
 586         set_last_error( sock_get_error( errno ) );
 587         return FALSE;
 588     }
 589     return TRUE;
 590 }
 591
 592 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *ret_size, BOOL *eof)
 593 {
 594     const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
 595     SecBuffer bufs[4];
 596     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 597     SSIZE_T size, buf_len;
 598     unsigned int i;
 599     SECURITY_STATUS res;
 600
 601     assert(conn->extra_len < ssl_buf_size);
 602
 603     if(conn->extra_len) {
 604         memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
 605         buf_len = conn->extra_len;
 606         conn->extra_len = 0;
 607         heap_free(conn->extra_buf);
 608         conn->extra_buf = NULL;
 609     }else {
 610         buf_len = sock_recv(conn->socket, conn->ssl_buf+conn->extra_len, ssl_buf_size-conn->extra_len, 0);
 611         if(buf_len < 0)
 612             return FALSE;
 613
 614         if(!buf_len) {
 615             *eof = TRUE;
 616             return TRUE;
 617         }
 618     }
 619
 620     *ret_size = 0;
 621     *eof = FALSE;
 622
 623     do {
 624         memset(bufs, 0, sizeof(bufs));
 625         bufs[0].BufferType = SECBUFFER_DATA;
 626         bufs[0].cbBuffer = buf_len;
 627         bufs[0].pvBuffer = conn->ssl_buf;
 628
 629         res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
 630         switch(res) {
 631         case SEC_E_OK:
 632             break;
 633         case SEC_I_CONTEXT_EXPIRED:
 634             TRACE("context expired\n");
 635             *eof = TRUE;
 636             return TRUE;
 637         case SEC_E_INCOMPLETE_MESSAGE:
 638             assert(buf_len < ssl_buf_size);
 639
 640             size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
 641             if(size < 1)
 642                 return FALSE;
 643
 644             buf_len += size;
 645             continue;
 646         default:
 647             WARN("failed: %08x\n", res);
 648             return FALSE;
 649         }
 650     } while(res != SEC_E_OK);
 651
 652     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 653         if(bufs[i].BufferType == SECBUFFER_DATA) {
 654             size = min(buf_size, bufs[i].cbBuffer);
 655             memcpy(buf, bufs[i].pvBuffer, size);
 656             if(size < bufs[i].cbBuffer) {
 657                 assert(!conn->peek_len);
 658                 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
 659                 if(!conn->peek_msg)
 660                     return FALSE;
 661                 conn->peek_len = bufs[i].cbBuffer-size;
 662                 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
 663             }
 664
 665             *ret_size = size;
 666         }
 667     }
 668
 669     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 670         if(bufs[i].BufferType == SECBUFFER_EXTRA) {
 671             conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
 672             if(!conn->extra_buf)
 673                 return FALSE;
 674
 675             conn->extra_len = bufs[i].cbBuffer;
 676             memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
 677         }
 678     }
 679
 680     return TRUE;
 681 }
 682
 683 BOOL netconn_recv( netconn_t *conn, void *buf, size_t len, int flags, int *recvd )
 684 {
 685     *recvd = 0;
 686     if (!len) return TRUE;
 687
 688     if (conn->secure)
 689     {
 690         SIZE_T size, cread;
 691         BOOL res, eof;
 692
 693         if (conn->peek_msg)
 694         {
 695             *recvd = min( len, conn->peek_len );
 696             memcpy( buf, conn->peek_msg, *recvd );
 697             conn->peek_len -= *recvd;
 698             conn->peek_msg += *recvd;
 699
 700             if (conn->peek_len == 0)
 701             {
 702                 heap_free( conn->peek_msg_mem );
 703                 conn->peek_msg_mem = NULL;
 704                 conn->peek_msg = NULL;
 705             }
 706             /* check if we have enough data from the peek buffer */
 707             if (!(flags & MSG_WAITALL) || *recvd == len) return TRUE;
 708         }
 709         size = *recvd;
 710
 711         do {
 712             res = read_ssl_chunk(conn, (BYTE*)buf+size, len-size, &cread, &eof);
 713             if(!res) {
 714                 WARN("read_ssl_chunk failed\n");
 715                 if(!size)
 716                     return FALSE;
 717                 break;
 718             }
 719
 720             if(eof) {
 721                 TRACE("EOF\n");
 722                 break;
 723             }
 724
 725             size += cread;
 726         }while(!size || ((flags & MSG_WAITALL) && size < len));
 727
 728         TRACE("received %ld bytes\n", size);
 729         *recvd = size;
 730         return TRUE;
 731     }
 732     if ((*recvd = sock_recv( conn->socket, buf, len, flags )) == -1)
 733     {
 734         set_last_error( sock_get_error( errno ) );
 735         return FALSE;
 736     }
 737     return TRUE;
 738 }
 739
 740 ULONG netconn_query_data_available( netconn_t *conn )
 741 {
 742     return conn->secure ? conn->peek_len : 0;
 743 }
 744
 745 DWORD netconn_set_timeout( netconn_t *netconn, BOOL send, int value )
 746 {
 747     struct timeval tv;
 748
 749     /* value is in milliseconds, convert to struct timeval */
 750     tv.tv_sec = value / 1000;
 751     tv.tv_usec = (value % 1000) * 1000;
 752
 753     if (setsockopt( netconn->socket, SOL_SOCKET, send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv, sizeof(tv) ) == -1)
 754     {
 755         WARN("setsockopt failed (%s)\n", strerror( errno ));
 756         return sock_get_error( errno );
 757     }
 758     return ERROR_SUCCESS;
 759 }
 760
 761 BOOL netconn_is_alive( netconn_t *netconn )
 762 {
 763 #ifdef MSG_DONTWAIT
 764     ssize_t len;
 765     BYTE b;
 766
 767     len = recv( netconn->socket, &b, 1, MSG_PEEK | MSG_DONTWAIT );
 768     return len == 1 || (len == -1 && errno == EWOULDBLOCK);
 769 #elif defined(__MINGW32__) || defined(_MSC_VER)
 770     ULONG mode;
 771     int len;
 772     char b;
 773
 774     mode = 1;
 775     if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
 776         return FALSE;
 777
 778     len = recv(netconn->socket, &b, 1, MSG_PEEK);
 779
 780     mode = 0;
 781     if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
 782         return FALSE;
 783
 784     return len == 1 || (len == -1 && WSAGetLastError() == WSAEWOULDBLOCK);
 785 #else
 786     FIXME("not supported on this platform\n");
 787     return TRUE;
 788 #endif
 789 }
 790
 791 static DWORD resolve_hostname( const WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr_storage *sa )
 792 {
 793     char *hostname;
 794 #ifdef HAVE_GETADDRINFO
 795     struct addrinfo *res, hints;
 796     int ret;
 797 #else
 798     struct hostent *he;
 799     struct sockaddr_in *sin = (struct sockaddr_in *)sa;
 800 #endif
 801
 802     if (!(hostname = strdupWA( hostnameW ))) return ERROR_OUTOFMEMORY;
 803
 804 #ifdef HAVE_GETADDRINFO
 805     memset( &hints, 0, sizeof(struct addrinfo) );
 806     /* Prefer IPv4 to IPv6 addresses, since some web servers do not listen on
 807      * their IPv6 addresses even though they have IPv6 addresses in the DNS.
 808      */
 809     hints.ai_family = AF_INET;
 810
 811     ret = getaddrinfo( hostname, NULL, &hints, &res );
 812     if (ret != 0)
 813     {
 814         TRACE("failed to get IPv4 address of %s (%s), retrying with IPv6\n", debugstr_w(hostnameW), gai_strerror(ret));
 815         hints.ai_family = AF_INET6;
 816         ret = getaddrinfo( hostname, NULL, &hints, &res );
 817         if (ret != 0)
 818         {
 819             TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret));
 820             heap_free( hostname );
 821             return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 822         }
 823     }
 824     heap_free( hostname );
 825     memcpy( sa, res->ai_addr, res->ai_addrlen );
 826     /* Copy port */
 827     switch (res->ai_family)
 828     {
 829     case AF_INET:
 830         ((struct sockaddr_in *)sa)->sin_port = htons( port );
 831         break;
 832     case AF_INET6:
 833         ((struct sockaddr_in6 *)sa)->sin6_port = htons( port );
 834         break;
 835     }
 836
 837     freeaddrinfo( res );
 838     return ERROR_SUCCESS;
 839 #else
 840     EnterCriticalSection( &cs_gethostbyname );
 841
 842     he = gethostbyname( hostname );
 843     heap_free( hostname );
 844     if (!he)
 845     {
 846         TRACE("failed to get address of %s (%d)\n", debugstr_w(hostnameW), h_errno);
 847         LeaveCriticalSection( &cs_gethostbyname );
 848         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 849     }
 850     memset( sa, 0, sizeof(struct sockaddr_in) );
 851     memcpy( &sin->sin_addr, he->h_addr, he->h_length );
 852     sin->sin_family = he->h_addrtype;
 853     sin->sin_port = htons( port );
 854
 855     LeaveCriticalSection( &cs_gethostbyname );
 856     return ERROR_SUCCESS;
 857 #endif
 858 }
 859
 860 struct resolve_args
 861 {
 862     const WCHAR             *hostname;
 863     INTERNET_PORT            port;
 864     struct sockaddr_storage *sa;
 865 };
 866
 867 static DWORD CALLBACK resolve_proc( LPVOID arg )
 868 {
 869     struct resolve_args *ra = arg;
 870     return resolve_hostname( ra->hostname, ra->port, ra->sa );
 871 }
 872
 873 BOOL netconn_resolve( WCHAR *hostname, INTERNET_PORT port, struct sockaddr_storage *sa, int timeout )
 874 {
 875     DWORD ret;
 876
 877     if (timeout)
 878     {
 879         DWORD status;
 880         HANDLE thread;
 881         struct resolve_args ra;
 882
 883         ra.hostname = hostname;
 884         ra.port     = port;
 885         ra.sa       = sa;
 886
 887         thread = CreateThread( NULL, 0, resolve_proc, &ra, 0, NULL );
 888         if (!thread) return FALSE;
 889
 890         status = WaitForSingleObject( thread, timeout );
 891         if (status == WAIT_OBJECT_0) GetExitCodeThread( thread, &ret );
 892         else ret = ERROR_WINHTTP_TIMEOUT;
 893         CloseHandle( thread );
 894     }
 895     else ret = resolve_hostname( hostname, port, sa );
 896
 897     if (ret)
 898     {
 899         set_last_error( ret );
 900         return FALSE;
 901     }
 902     return TRUE;
 903 }
 904
 905 const void *netconn_get_certificate( netconn_t *conn )
 906 {
 907     const CERT_CONTEXT *ret;
 908     SECURITY_STATUS res;
 909
 910     if (!conn->secure) return NULL;
 911     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
 912     return res == SEC_E_OK ? ret : NULL;
 913 }
 914
 915 int netconn_get_cipher_strength( netconn_t *conn )
 916 {
 917     SecPkgContext_ConnectionInfo conn_info;
 918     SECURITY_STATUS res;
 919
 920     if (!conn->secure) return 0;
 921     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
 922     if(res != SEC_E_OK)
 923         WARN("QueryContextAttributesW failed: %08x\n", res);
 924     return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
 925 }