dlls/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 "config.h"
  21 #include "wine/port.h"
  22
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <errno.h>
  26 #include <assert.h>
  27
  28 #include <sys/types.h>
  29 #ifdef HAVE_SYS_SOCKET_H
  30 # include <sys/socket.h>
  31 #endif
  32 #ifdef HAVE_SYS_IOCTL_H
  33 # include <sys/ioctl.h>
  34 #endif
  35 #ifdef HAVE_SYS_FILIO_H
  36 # include <sys/filio.h>
  37 #endif
  38 #ifdef HAVE_POLL_H
  39 # include <poll.h>
  40 #endif
  41
  42 #define NONAMELESSUNION
  43
  44 #include "wine/debug.h"
  45 #include "wine/library.h"
  46
  47 #include "windef.h"
  48 #include "winbase.h"
  49 #include "winhttp.h"
  50 #include "wincrypt.h"
  51 #include "schannel.h"
  52
  53 #include "winhttp_private.h"
  54
  55 /* to avoid conflicts with the Unix socket headers */
  56 #define USE_WS_PREFIX
  57 #include "winsock2.h"
  58
  59 WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
  60
  61 #ifndef HAVE_GETADDRINFO
  62
  63 /* critical section to protect non-reentrant gethostbyname() */
  64 static CRITICAL_SECTION cs_gethostbyname;
  65 static CRITICAL_SECTION_DEBUG critsect_debug =
  66 {
  67     0, 0, &cs_gethostbyname,
  68     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  69       0, 0, { (DWORD_PTR)(__FILE__ ": cs_gethostbyname") }
  70 };
  71 static CRITICAL_SECTION cs_gethostbyname = { &critsect_debug, -1, 0, 0, 0, 0 };
  72
  73 #endif
  74
  75 /* translate a unix error code into a winsock error code */
  76 static int sock_get_error( int err )
  77 {
  78 #if !defined(__MINGW32__) && !defined (_MSC_VER)
  79     switch (err)
  80     {
  81         case EINTR:             return WSAEINTR;
  82         case EBADF:             return WSAEBADF;
  83         case EPERM:
  84         case EACCES:            return WSAEACCES;
  85         case EFAULT:            return WSAEFAULT;
  86         case EINVAL:            return WSAEINVAL;
  87         case EMFILE:            return WSAEMFILE;
  88         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
  89         case EINPROGRESS:       return WSAEINPROGRESS;
  90         case EALREADY:          return WSAEALREADY;
  91         case ENOTSOCK:          return WSAENOTSOCK;
  92         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
  93         case EMSGSIZE:          return WSAEMSGSIZE;
  94         case EPROTOTYPE:        return WSAEPROTOTYPE;
  95         case ENOPROTOOPT:       return WSAENOPROTOOPT;
  96         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
  97         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
  98         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
  99         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 100         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 101         case EADDRINUSE:        return WSAEADDRINUSE;
 102         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 103         case ENETDOWN:          return WSAENETDOWN;
 104         case ENETUNREACH:       return WSAENETUNREACH;
 105         case ENETRESET:         return WSAENETRESET;
 106         case ECONNABORTED:      return WSAECONNABORTED;
 107         case EPIPE:
 108         case ECONNRESET:        return WSAECONNRESET;
 109         case ENOBUFS:           return WSAENOBUFS;
 110         case EISCONN:           return WSAEISCONN;
 111         case ENOTCONN:          return WSAENOTCONN;
 112         case ESHUTDOWN:         return WSAESHUTDOWN;
 113         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 114         case ETIMEDOUT:         return WSAETIMEDOUT;
 115         case ECONNREFUSED:      return WSAECONNREFUSED;
 116         case ELOOP:             return WSAELOOP;
 117         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 118         case EHOSTDOWN:         return WSAEHOSTDOWN;
 119         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 120         case ENOTEMPTY:         return WSAENOTEMPTY;
 121 #ifdef EPROCLIM
 122         case EPROCLIM:          return WSAEPROCLIM;
 123 #endif
 124 #ifdef EUSERS
 125         case EUSERS:            return WSAEUSERS;
 126 #endif
 127 #ifdef EDQUOT
 128         case EDQUOT:            return WSAEDQUOT;
 129 #endif
 130 #ifdef ESTALE
 131         case ESTALE:            return WSAESTALE;
 132 #endif
 133 #ifdef EREMOTE
 134         case EREMOTE:           return WSAEREMOTE;
 135 #endif
 136     default: errno = err; perror( "sock_set_error" ); return WSAEFAULT;
 137     }
 138 #endif
 139     return err;
 140 }
 141
 142 static int sock_send(int fd, const void *msg, size_t len, int flags)
 143 {
 144     int ret;
 145     do
 146     {
 147         ret = send(fd, msg, len, flags);
 148     }
 149     while(ret == -1 && errno == EINTR);
 150     return ret;
 151 }
 152
 153 static int sock_recv(int fd, void *msg, size_t len, int flags)
 154 {
 155     int ret;
 156     do
 157     {
 158         ret = recv(fd, msg, len, flags);
 159     }
 160     while(ret == -1 && errno == EINTR);
 161     return ret;
 162 }
 163
 164 static DWORD netconn_verify_cert( PCCERT_CONTEXT cert, WCHAR *server, DWORD security_flags )
 165 {
 166     HCERTSTORE store = cert->hCertStore;
 167     BOOL ret;
 168     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
 169     PCCERT_CHAIN_CONTEXT chain;
 170     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
 171     char *server_auth[] = { oid_server_auth };
 172     DWORD err = ERROR_SUCCESS;
 173
 174     TRACE("verifying %s\n", debugstr_w( server ));
 175     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
 176     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
 177     if ((ret = CertGetCertificateChain( NULL, cert, NULL, store, &chainPara,
 178                                         CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT,
 179                                         NULL, &chain )))
 180     {
 181         if (chain->TrustStatus.dwErrorStatus)
 182         {
 183             static const DWORD supportedErrors =
 184                 CERT_TRUST_IS_NOT_TIME_VALID |
 185                 CERT_TRUST_IS_UNTRUSTED_ROOT |
 186                 CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 187
 188             if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_NOT_TIME_VALID)
 189             {
 190                 if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID))
 191                     err = ERROR_WINHTTP_SECURE_CERT_DATE_INVALID;
 192             }
 193             else if (chain->TrustStatus.dwErrorStatus &
 194                      CERT_TRUST_IS_UNTRUSTED_ROOT)
 195             {
 196                 if (!(security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA))
 197                     err = ERROR_WINHTTP_SECURE_INVALID_CA;
 198             }
 199             else if ((chain->TrustStatus.dwErrorStatus &
 200                       CERT_TRUST_IS_OFFLINE_REVOCATION) ||
 201                      (chain->TrustStatus.dwErrorStatus &
 202                       CERT_TRUST_REVOCATION_STATUS_UNKNOWN))
 203                 err = ERROR_WINHTTP_SECURE_CERT_REV_FAILED;
 204             else if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_REVOKED)
 205                 err = ERROR_WINHTTP_SECURE_CERT_REVOKED;
 206             else if (chain->TrustStatus.dwErrorStatus &
 207                 CERT_TRUST_IS_NOT_VALID_FOR_USAGE)
 208             {
 209                 if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE))
 210                     err = ERROR_WINHTTP_SECURE_CERT_WRONG_USAGE;
 211             }
 212             else if (chain->TrustStatus.dwErrorStatus & ~supportedErrors)
 213                 err = ERROR_WINHTTP_SECURE_INVALID_CERT;
 214         }
 215         if (!err)
 216         {
 217             CERT_CHAIN_POLICY_PARA policyPara;
 218             SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
 219             CERT_CHAIN_POLICY_STATUS policyStatus;
 220             CERT_CHAIN_CONTEXT chainCopy;
 221
 222             /* Clear chain->TrustStatus.dwErrorStatus so
 223              * CertVerifyCertificateChainPolicy will verify additional checks
 224              * rather than stopping with an existing, ignored error.
 225              */
 226             memcpy(&chainCopy, chain, sizeof(chainCopy));
 227             chainCopy.TrustStatus.dwErrorStatus = 0;
 228             sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
 229             sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
 230             sslExtraPolicyPara.pwszServerName = server;
 231             sslExtraPolicyPara.fdwChecks = security_flags;
 232             policyPara.cbSize = sizeof(policyPara);
 233             policyPara.dwFlags = 0;
 234             policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
 235             ret = CertVerifyCertificateChainPolicy( CERT_CHAIN_POLICY_SSL,
 236                                                     &chainCopy, &policyPara,
 237                                                     &policyStatus );
 238             /* Any error in the policy status indicates that the
 239              * policy couldn't be verified.
 240              */
 241             if (ret && policyStatus.dwError)
 242             {
 243                 if (policyStatus.dwError == CERT_E_CN_NO_MATCH)
 244                     err = ERROR_WINHTTP_SECURE_CERT_CN_INVALID;
 245                 else
 246                     err = ERROR_WINHTTP_SECURE_INVALID_CERT;
 247             }
 248         }
 249         CertFreeCertificateChain( chain );
 250     }
 251     else
 252         err = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 253     TRACE("returning %08x\n", err);
 254     return err;
 255 }
 256
 257 static SecHandle cred_handle;
 258 static BOOL cred_handle_initialized;
 259
 260 static CRITICAL_SECTION init_sechandle_cs;
 261 static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = {
 262     0, 0, &init_sechandle_cs,
 263     { &init_sechandle_cs_debug.ProcessLocksList,
 264       &init_sechandle_cs_debug.ProcessLocksList },
 265     0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") }
 266 };
 267 static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 };
 268
 269 static BOOL ensure_cred_handle(void)
 270 {
 271     BOOL ret = TRUE;
 272
 273     EnterCriticalSection(&init_sechandle_cs);
 274
 275     if(!cred_handle_initialized) {
 276         SECURITY_STATUS res;
 277
 278         res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, NULL,
 279                 NULL, NULL, &cred_handle, NULL);
 280         if(res == SEC_E_OK) {
 281             cred_handle_initialized = TRUE;
 282         }else {
 283             WARN("AcquireCredentialsHandleW failed: %u\n", res);
 284             ret = FALSE;
 285         }
 286     }
 287
 288     LeaveCriticalSection(&init_sechandle_cs);
 289     return ret;
 290 }
 291
 292 BOOL netconn_init( netconn_t *conn )
 293 {
 294     memset(conn, 0, sizeof(*conn));
 295     conn->socket = -1;
 296     return TRUE;
 297 }
 298
 299 void netconn_unload( void )
 300 {
 301     if(cred_handle_initialized)
 302         FreeCredentialsHandle(&cred_handle);
 303     DeleteCriticalSection(&init_sechandle_cs);
 304 #ifndef HAVE_GETADDRINFO
 305     DeleteCriticalSection(&cs_gethostbyname);
 306 #endif
 307 }
 308
 309 BOOL netconn_connected( netconn_t *conn )
 310 {
 311     return (conn->socket != -1);
 312 }
 313
 314 BOOL netconn_create( netconn_t *conn, int domain, int type, int protocol )
 315 {
 316     if ((conn->socket = socket( domain, type, protocol )) == -1)
 317     {
 318         WARN("unable to create socket (%s)\n", strerror(errno));
 319         set_last_error( sock_get_error( errno ) );
 320         return FALSE;
 321     }
 322     return TRUE;
 323 }
 324
 325 BOOL netconn_close( netconn_t *conn )
 326 {
 327     int res;
 328
 329     if (conn->secure)
 330     {
 331         heap_free( conn->peek_msg_mem );
 332         conn->peek_msg_mem = NULL;
 333         conn->peek_msg = NULL;
 334         conn->peek_len = 0;
 335         heap_free(conn->ssl_buf);
 336         conn->ssl_buf = NULL;
 337         heap_free(conn->extra_buf);
 338         conn->extra_buf = NULL;
 339         conn->extra_len = 0;
 340         DeleteSecurityContext(&conn->ssl_ctx);
 341         conn->secure = FALSE;
 342     }
 343     res = closesocket( conn->socket );
 344     conn->socket = -1;
 345     if (res == -1)
 346     {
 347         set_last_error( sock_get_error( errno ) );
 348         return FALSE;
 349     }
 350     return TRUE;
 351 }
 352
 353 BOOL netconn_connect( netconn_t *conn, const struct sockaddr *sockaddr, unsigned int addr_len, int timeout )
 354 {
 355     BOOL ret = FALSE;
 356     int res;
 357     ULONG state;
 358
 359     if (timeout > 0)
 360     {
 361         state = 1;
 362         ioctlsocket( conn->socket, FIONBIO, &state );
 363     }
 364
 365     for (;;)
 366     {
 367         res = 0;
 368         if (connect( conn->socket, sockaddr, addr_len ) < 0)
 369         {
 370             res = sock_get_error( errno );
 371             if (res == WSAEWOULDBLOCK || res == WSAEINPROGRESS)
 372             {
 373                 struct pollfd pfd;
 374
 375                 pfd.fd = conn->socket;
 376                 pfd.events = POLLOUT;
 377                 for (;;)
 378                 {
 379                     res = 0;
 380                     if (poll( &pfd, 1, timeout ) > 0)
 381                     {
 382                         ret = TRUE;
 383                         break;
 384                     }
 385                     else
 386                     {
 387                         res = sock_get_error( errno );
 388                         if (res != WSAEINTR) break;
 389                     }
 390                 }
 391             }
 392             if (res != WSAEINTR) break;
 393         }
 394         else
 395         {
 396             ret = TRUE;
 397             break;
 398         }
 399     }
 400     if (timeout > 0)
 401     {
 402         state = 0;
 403         ioctlsocket( conn->socket, FIONBIO, &state );
 404     }
 405     if (!ret)
 406     {
 407         WARN("unable to connect to host (%d)\n", res);
 408         set_last_error( res );
 409     }
 410     return ret;
 411 }
 412
 413 BOOL netconn_secure_connect( netconn_t *conn, WCHAR *hostname )
 414 {
 415     SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
 416     SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
 417     BYTE *read_buf;
 418     SIZE_T read_buf_size = 2048;
 419     ULONG attrs = 0;
 420     CtxtHandle ctx;
 421     SSIZE_T size;
 422     const CERT_CONTEXT *cert;
 423     SECURITY_STATUS status;
 424     DWORD res = ERROR_SUCCESS;
 425
 426     const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
 427         |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
 428
 429     if(!ensure_cred_handle())
 430         return FALSE;
 431
 432     read_buf = heap_alloc(read_buf_size);
 433     if(!read_buf)
 434         return FALSE;
 435
 436     status = InitializeSecurityContextW(&cred_handle, NULL, hostname, isc_req_flags, 0, 0, NULL, 0,
 437             &ctx, &out_desc, &attrs, NULL);
 438
 439     assert(status != SEC_E_OK);
 440
 441     while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
 442         if(out_buf.cbBuffer) {
 443             assert(status == SEC_I_CONTINUE_NEEDED);
 444
 445             TRACE("sending %u bytes\n", out_buf.cbBuffer);
 446
 447             size = sock_send(conn->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
 448             if(size != out_buf.cbBuffer) {
 449                 ERR("send failed\n");
 450                 res = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 451                 break;
 452             }
 453
 454             FreeContextBuffer(out_buf.pvBuffer);
 455             out_buf.pvBuffer = NULL;
 456             out_buf.cbBuffer = 0;
 457         }
 458
 459         if(status == SEC_I_CONTINUE_NEEDED) {
 460             assert(in_bufs[1].cbBuffer < read_buf_size);
 461
 462             memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
 463             in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
 464
 465             in_bufs[1].BufferType = SECBUFFER_EMPTY;
 466             in_bufs[1].cbBuffer = 0;
 467             in_bufs[1].pvBuffer = NULL;
 468         }
 469
 470         assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
 471         assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
 472
 473         if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
 474             BYTE *new_read_buf;
 475
 476             new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
 477             if(!new_read_buf) {
 478                 status = E_OUTOFMEMORY;
 479                 break;
 480             }
 481
 482             in_bufs[0].pvBuffer = read_buf = new_read_buf;
 483             read_buf_size += 1024;
 484         }
 485
 486         size = sock_recv(conn->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
 487         if(size < 1) {
 488             WARN("recv error\n");
 489             status = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 490             break;
 491         }
 492
 493         TRACE("recv %lu bytes\n", size);
 494
 495         in_bufs[0].cbBuffer += size;
 496         in_bufs[0].pvBuffer = read_buf;
 497         status = InitializeSecurityContextW(&cred_handle, &ctx, hostname,  isc_req_flags, 0, 0, &in_desc,
 498                 0, NULL, &out_desc, &attrs, NULL);
 499         TRACE("InitializeSecurityContext ret %08x\n", status);
 500
 501         if(status == SEC_E_OK) {
 502             if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
 503                 FIXME("SECBUFFER_EXTRA not supported\n");
 504
 505             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &conn->ssl_sizes);
 506             if(status != SEC_E_OK) {
 507                 WARN("Could not get sizes\n");
 508                 break;
 509             }
 510
 511             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
 512             if(status == SEC_E_OK) {
 513                 res = netconn_verify_cert(cert, hostname, conn->security_flags);
 514                 CertFreeCertificateContext(cert);
 515                 if(res != ERROR_SUCCESS) {
 516                     WARN("cert verify failed: %u\n", res);
 517                     break;
 518                 }
 519             }else {
 520                 WARN("Could not get cert\n");
 521                 break;
 522             }
 523
 524             conn->ssl_buf = heap_alloc(conn->ssl_sizes.cbHeader + conn->ssl_sizes.cbMaximumMessage + conn->ssl_sizes.cbTrailer);
 525             if(!conn->ssl_buf) {
 526                 res = GetLastError();
 527                 break;
 528             }
 529         }
 530     }
 531
 532     heap_free(read_buf);
 533
 534     if(status != SEC_E_OK || res != ERROR_SUCCESS) {
 535         WARN("Failed to initialize security context failed: %08x\n", status);
 536         heap_free(conn->ssl_buf);
 537         conn->ssl_buf = NULL;
 538         DeleteSecurityContext(&ctx);
 539         set_last_error(res ? res : ERROR_WINHTTP_SECURE_CHANNEL_ERROR);
 540         return FALSE;
 541     }
 542
 543
 544     TRACE("established SSL connection\n");
 545     conn->secure = TRUE;
 546     conn->ssl_ctx = ctx;
 547     return TRUE;
 548 }
 549
 550 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
 551 {
 552     SecBuffer bufs[4] = {
 553         {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
 554         {size,  SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
 555         {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
 556         {0, SECBUFFER_EMPTY, NULL}
 557     };
 558     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 559     SECURITY_STATUS res;
 560
 561     memcpy(bufs[1].pvBuffer, msg, size);
 562     res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
 563     if(res != SEC_E_OK) {
 564         WARN("EncryptMessage failed\n");
 565         return FALSE;
 566     }
 567
 568     if(sock_send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
 569         WARN("send failed\n");
 570         return FALSE;
 571     }
 572
 573     return TRUE;
 574 }
 575
 576 BOOL netconn_send( netconn_t *conn, const void *msg, size_t len, int *sent )
 577 {
 578     if (!netconn_connected( conn )) return FALSE;
 579     if (conn->secure)
 580     {
 581         const BYTE *ptr = msg;
 582         size_t chunk_size;
 583
 584         *sent = 0;
 585
 586         while(len) {
 587             chunk_size = min(len, conn->ssl_sizes.cbMaximumMessage);
 588             if(!send_ssl_chunk(conn, ptr, chunk_size))
 589                 return FALSE;
 590
 591             *sent += chunk_size;
 592             ptr += chunk_size;
 593             len -= chunk_size;
 594         }
 595
 596         return TRUE;
 597     }
 598     if ((*sent = sock_send( conn->socket, msg, len, 0 )) == -1)
 599     {
 600         set_last_error( sock_get_error( errno ) );
 601         return FALSE;
 602     }
 603     return TRUE;
 604 }
 605
 606 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *ret_size, BOOL *eof)
 607 {
 608     const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
 609     SecBuffer bufs[4];
 610     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 611     SSIZE_T size, buf_len;
 612     unsigned int i;
 613     SECURITY_STATUS res;
 614
 615     assert(conn->extra_len < ssl_buf_size);
 616
 617     if(conn->extra_len) {
 618         memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
 619         buf_len = conn->extra_len;
 620         conn->extra_len = 0;
 621         heap_free(conn->extra_buf);
 622         conn->extra_buf = NULL;
 623     }else {
 624         buf_len = sock_recv(conn->socket, conn->ssl_buf+conn->extra_len, ssl_buf_size-conn->extra_len, 0);
 625         if(buf_len < 0) {
 626             WARN("recv failed\n");
 627             return FALSE;
 628         }
 629
 630         if(!buf_len) {
 631             *eof = TRUE;
 632             return TRUE;
 633         }
 634     }
 635
 636     *ret_size = 0;
 637     *eof = FALSE;
 638
 639     do {
 640         memset(bufs, 0, sizeof(bufs));
 641         bufs[0].BufferType = SECBUFFER_DATA;
 642         bufs[0].cbBuffer = buf_len;
 643         bufs[0].pvBuffer = conn->ssl_buf;
 644
 645         res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
 646         switch(res) {
 647         case SEC_E_OK:
 648             break;
 649         case SEC_I_CONTEXT_EXPIRED:
 650             TRACE("context expired\n");
 651             *eof = TRUE;
 652             return TRUE;
 653         case SEC_E_INCOMPLETE_MESSAGE:
 654             assert(buf_len < ssl_buf_size);
 655
 656             size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
 657             if(size < 1)
 658                 return FALSE;
 659
 660             buf_len += size;
 661             continue;
 662         default:
 663             WARN("failed: %08x\n", res);
 664             return FALSE;
 665         }
 666     } while(res != SEC_E_OK);
 667
 668     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 669         if(bufs[i].BufferType == SECBUFFER_DATA) {
 670             size = min(buf_size, bufs[i].cbBuffer);
 671             memcpy(buf, bufs[i].pvBuffer, size);
 672             if(size < bufs[i].cbBuffer) {
 673                 assert(!conn->peek_len);
 674                 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
 675                 if(!conn->peek_msg)
 676                     return FALSE;
 677                 conn->peek_len = bufs[i].cbBuffer-size;
 678                 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
 679             }
 680
 681             *ret_size = size;
 682         }
 683     }
 684
 685     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 686         if(bufs[i].BufferType == SECBUFFER_EXTRA) {
 687             conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
 688             if(!conn->extra_buf)
 689                 return FALSE;
 690
 691             conn->extra_len = bufs[i].cbBuffer;
 692             memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
 693         }
 694     }
 695
 696     return TRUE;
 697 }
 698
 699 BOOL netconn_recv( netconn_t *conn, void *buf, size_t len, int flags, int *recvd )
 700 {
 701     *recvd = 0;
 702     if (!netconn_connected( conn )) return FALSE;
 703     if (!len) return TRUE;
 704
 705     if (conn->secure)
 706     {
 707         SIZE_T size, cread;
 708         BOOL res, eof;
 709
 710         if (conn->peek_msg)
 711         {
 712             *recvd = min( len, conn->peek_len );
 713             memcpy( buf, conn->peek_msg, *recvd );
 714             conn->peek_len -= *recvd;
 715             conn->peek_msg += *recvd;
 716
 717             if (conn->peek_len == 0)
 718             {
 719                 heap_free( conn->peek_msg_mem );
 720                 conn->peek_msg_mem = NULL;
 721                 conn->peek_msg = NULL;
 722             }
 723             /* check if we have enough data from the peek buffer */
 724             if (!(flags & MSG_WAITALL) || *recvd == len) return TRUE;
 725         }
 726         size = *recvd;
 727
 728         do {
 729             res = read_ssl_chunk(conn, (BYTE*)buf+size, len-size, &cread, &eof);
 730             if(!res) {
 731                 WARN("read_ssl_chunk failed\n");
 732                 if(!size)
 733                     return FALSE;
 734                 break;
 735             }
 736
 737             if(eof) {
 738                 TRACE("EOF\n");
 739                 break;
 740             }
 741
 742             size += cread;
 743         }while(!size || ((flags & MSG_WAITALL) && size < len));
 744
 745         TRACE("received %ld bytes\n", size);
 746         *recvd = size;
 747         return TRUE;
 748     }
 749     if ((*recvd = sock_recv( conn->socket, buf, len, flags )) == -1)
 750     {
 751         set_last_error( sock_get_error( errno ) );
 752         return FALSE;
 753     }
 754     return TRUE;
 755 }
 756
 757 ULONG netconn_query_data_available( netconn_t *conn )
 758 {
 759     if(!netconn_connected(conn))
 760         return 0;
 761
 762     if(conn->secure)
 763         return conn->peek_len;
 764
 765     return 0;
 766 }
 767
 768 DWORD netconn_set_timeout( netconn_t *netconn, BOOL send, int value )
 769 {
 770     struct timeval tv;
 771
 772     /* value is in milliseconds, convert to struct timeval */
 773     tv.tv_sec = value / 1000;
 774     tv.tv_usec = (value % 1000) * 1000;
 775
 776     if (setsockopt( netconn->socket, SOL_SOCKET, send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv, sizeof(tv) ) == -1)
 777     {
 778         WARN("setsockopt failed (%s)\n", strerror( errno ));
 779         return sock_get_error( errno );
 780     }
 781     return ERROR_SUCCESS;
 782 }
 783
 784 static DWORD resolve_hostname( const WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr *sa, socklen_t *sa_len )
 785 {
 786     char *hostname;
 787 #ifdef HAVE_GETADDRINFO
 788     struct addrinfo *res, hints;
 789     int ret;
 790 #else
 791     struct hostent *he;
 792     struct sockaddr_in *sin = (struct sockaddr_in *)sa;
 793 #endif
 794
 795     if (!(hostname = strdupWA( hostnameW ))) return ERROR_OUTOFMEMORY;
 796
 797 #ifdef HAVE_GETADDRINFO
 798     memset( &hints, 0, sizeof(struct addrinfo) );
 799     /* Prefer IPv4 to IPv6 addresses, since some web servers do not listen on
 800      * their IPv6 addresses even though they have IPv6 addresses in the DNS.
 801      */
 802     hints.ai_family = AF_INET;
 803
 804     ret = getaddrinfo( hostname, NULL, &hints, &res );
 805     if (ret != 0)
 806     {
 807         TRACE("failed to get IPv4 address of %s (%s), retrying with IPv6\n", debugstr_w(hostnameW), gai_strerror(ret));
 808         hints.ai_family = AF_INET6;
 809         ret = getaddrinfo( hostname, NULL, &hints, &res );
 810         if (ret != 0)
 811         {
 812             TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret));
 813             heap_free( hostname );
 814             return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 815         }
 816     }
 817     heap_free( hostname );
 818     if (*sa_len < res->ai_addrlen)
 819     {
 820         WARN("address too small\n");
 821         freeaddrinfo( res );
 822         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 823     }
 824     *sa_len = res->ai_addrlen;
 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     if (*sa_len < sizeof(struct sockaddr_in))
 851     {
 852         WARN("address too small\n");
 853         LeaveCriticalSection( &cs_gethostbyname );
 854         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 855     }
 856     *sa_len = sizeof(struct sockaddr_in);
 857     memset( sa, 0, sizeof(struct sockaddr_in) );
 858     memcpy( &sin->sin_addr, he->h_addr, he->h_length );
 859     sin->sin_family = he->h_addrtype;
 860     sin->sin_port = htons( port );
 861
 862     LeaveCriticalSection( &cs_gethostbyname );
 863     return ERROR_SUCCESS;
 864 #endif
 865 }
 866
 867 struct resolve_args
 868 {
 869     const WCHAR     *hostname;
 870     INTERNET_PORT    port;
 871     struct sockaddr *sa;
 872     socklen_t       *sa_len;
 873 };
 874
 875 static DWORD CALLBACK resolve_proc( LPVOID arg )
 876 {
 877     struct resolve_args *ra = arg;
 878     return resolve_hostname( ra->hostname, ra->port, ra->sa, ra->sa_len );
 879 }
 880
 881 BOOL netconn_resolve( WCHAR *hostname, INTERNET_PORT port, struct sockaddr *sa, socklen_t *sa_len, int timeout )
 882 {
 883     DWORD ret;
 884
 885     if (timeout)
 886     {
 887         DWORD status;
 888         HANDLE thread;
 889         struct resolve_args ra;
 890
 891         ra.hostname = hostname;
 892         ra.port     = port;
 893         ra.sa       = sa;
 894         ra.sa_len   = sa_len;
 895
 896         thread = CreateThread( NULL, 0, resolve_proc, &ra, 0, NULL );
 897         if (!thread) return FALSE;
 898
 899         status = WaitForSingleObject( thread, timeout );
 900         if (status == WAIT_OBJECT_0) GetExitCodeThread( thread, &ret );
 901         else ret = ERROR_WINHTTP_TIMEOUT;
 902         CloseHandle( thread );
 903     }
 904     else ret = resolve_hostname( hostname, port, sa, sa_len );
 905
 906     if (ret)
 907     {
 908         set_last_error( ret );
 909         return FALSE;
 910     }
 911     return TRUE;
 912 }
 913
 914 const void *netconn_get_certificate( netconn_t *conn )
 915 {
 916     const CERT_CONTEXT *ret;
 917     SECURITY_STATUS res;
 918
 919     if (!conn->secure) return NULL;
 920     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
 921     return res == SEC_E_OK ? ret : NULL;
 922 }
 923
 924 int netconn_get_cipher_strength( netconn_t *conn )
 925 {
 926     SecPkgContext_ConnectionInfo conn_info;
 927     SECURITY_STATUS res;
 928
 929     if (!conn->secure) return 0;
 930     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
 931     if(res != SEC_E_OK)
 932         WARN("QueryContextAttributesW failed: %08x\n", res);
 933     return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
 934 }