reactos/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         ret = send(fd, msg, len, flags);
 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         ret = recv(fd, msg, len, flags);
 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 static SecHandle cred_handle;
 245 static BOOL cred_handle_initialized;
 246
 247 static CRITICAL_SECTION init_sechandle_cs;
 248 static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = {
 249     0, 0, &init_sechandle_cs,
 250     { &init_sechandle_cs_debug.ProcessLocksList,
 251       &init_sechandle_cs_debug.ProcessLocksList },
 252     0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") }
 253 };
 254 static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 };
 255
 256 static BOOL ensure_cred_handle(void)
 257 {
 258     BOOL ret = TRUE;
 259
 260     EnterCriticalSection(&init_sechandle_cs);
 261
 262     if(!cred_handle_initialized) {
 263         SECURITY_STATUS res;
 264
 265         res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, NULL,
 266                 NULL, NULL, &cred_handle, NULL);
 267         if(res == SEC_E_OK) {
 268             cred_handle_initialized = TRUE;
 269         }else {
 270             WARN("AcquireCredentialsHandleW failed: %u\n", res);
 271             ret = FALSE;
 272         }
 273     }
 274
 275     LeaveCriticalSection(&init_sechandle_cs);
 276     return ret;
 277 }
 278
 279 #ifdef __REACTOS__
 280 static BOOL winsock_initialized = FALSE;
 281 BOOL netconn_init_winsock()
 282 {
 283     WSADATA wsaData;
 284     int error;
 285     if (!winsock_initialized)
 286     {
 287         error = WSAStartup(MAKEWORD(1, 1), &wsaData);
 288         if (error)
 289         {
 290             ERR("WSAStartup failed: %d\n", error);
 291             return FALSE;
 292         }
 293         else
 294             winsock_initialized = TRUE;
 295     }
 296     return winsock_initialized;
 297 }
 298
 299 #endif
 300
 301 BOOL netconn_init( netconn_t *conn )
 302 {
 303     memset(conn, 0, sizeof(*conn));
 304     conn->socket = -1;
 305     return TRUE;
 306 }
 307
 308 void netconn_unload( void )
 309 {
 310     if(cred_handle_initialized)
 311         FreeCredentialsHandle(&cred_handle);
 312     DeleteCriticalSection(&init_sechandle_cs);
 313 #ifndef HAVE_GETADDRINFO
 314     DeleteCriticalSection(&cs_gethostbyname);
 315 #endif
 316 #ifdef __REACTOS__
 317     if(winsock_initialized)
 318         WSACleanup();
 319 #endif
 320 }
 321
 322 BOOL netconn_connected( netconn_t *conn )
 323 {
 324     return (conn->socket != -1);
 325 }
 326
 327 BOOL netconn_create( netconn_t *conn, int domain, int type, int protocol )
 328 {
 329     if ((conn->socket = socket( domain, type, protocol )) == -1)
 330     {
 331         WARN("unable to create socket (%s)\n", strerror(errno));
 332         set_last_error( sock_get_error( errno ) );
 333         return FALSE;
 334     }
 335     return TRUE;
 336 }
 337
 338 BOOL netconn_close( netconn_t *conn )
 339 {
 340     int res;
 341
 342     if (conn->secure)
 343     {
 344         heap_free( conn->peek_msg_mem );
 345         conn->peek_msg_mem = NULL;
 346         conn->peek_msg = NULL;
 347         conn->peek_len = 0;
 348         heap_free(conn->ssl_buf);
 349         conn->ssl_buf = NULL;
 350         heap_free(conn->extra_buf);
 351         conn->extra_buf = NULL;
 352         conn->extra_len = 0;
 353         DeleteSecurityContext(&conn->ssl_ctx);
 354         conn->secure = FALSE;
 355     }
 356     res = closesocket( conn->socket );
 357     conn->socket = -1;
 358     if (res == -1)
 359     {
 360         set_last_error( sock_get_error( errno ) );
 361         return FALSE;
 362     }
 363     return TRUE;
 364 }
 365
 366 BOOL netconn_connect( netconn_t *conn, const struct sockaddr *sockaddr, unsigned int addr_len, int timeout )
 367 {
 368     BOOL ret = FALSE;
 369     int res = 0;
 370     ULONG state;
 371
 372     if (timeout > 0)
 373     {
 374         state = 1;
 375         ioctlsocket( conn->socket, FIONBIO, &state );
 376     }
 377     if (connect( conn->socket, sockaddr, addr_len ) < 0)
 378     {
 379         res = sock_get_error( errno );
 380         if (res == WSAEWOULDBLOCK || res == WSAEINPROGRESS)
 381         {
 382 #ifdef __REACTOS__
 383             /* ReactOS: use select instead of poll */
 384             fd_set outfd;
 385             struct timeval tv;
 386
 387             FD_ZERO(&outfd);
 388             FD_SET(conn->socket, &outfd);
 389
 390             tv.tv_sec = 0;
 391             tv.tv_usec = timeout * 1000;
 392
 393             if (select( 0, NULL, &outfd, NULL, &tv ) > 0)
 394 #else
 395             struct pollfd pfd;
 396
 397             pfd.fd = conn->socket;
 398             pfd.events = POLLOUT;
 399             if (poll( &pfd, 1, timeout ) > 0)
 400 #endif
 401                 ret = TRUE;
 402             else
 403                 res = sock_get_error( errno );
 404         }
 405     }
 406     else
 407         ret = TRUE;
 408     if (timeout > 0)
 409     {
 410         state = 0;
 411         ioctlsocket( conn->socket, FIONBIO, &state );
 412     }
 413     if (!ret)
 414     {
 415         WARN("unable to connect to host (%d)\n", res);
 416         set_last_error( res );
 417     }
 418     return ret;
 419 }
 420
 421 BOOL netconn_secure_connect( netconn_t *conn, WCHAR *hostname )
 422 {
 423     SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
 424     SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
 425     BYTE *read_buf;
 426     SIZE_T read_buf_size = 2048;
 427     ULONG attrs = 0;
 428     CtxtHandle ctx;
 429     SSIZE_T size;
 430     const CERT_CONTEXT *cert;
 431     SECURITY_STATUS status;
 432     DWORD res = ERROR_SUCCESS;
 433
 434     const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
 435         |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
 436
 437     if(!ensure_cred_handle())
 438         return FALSE;
 439
 440     read_buf = heap_alloc(read_buf_size);
 441     if(!read_buf)
 442         return FALSE;
 443
 444     status = InitializeSecurityContextW(&cred_handle, NULL, hostname, isc_req_flags, 0, 0, NULL, 0,
 445             &ctx, &out_desc, &attrs, NULL);
 446
 447     assert(status != SEC_E_OK);
 448
 449     while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
 450         if(out_buf.cbBuffer) {
 451             assert(status == SEC_I_CONTINUE_NEEDED);
 452
 453             TRACE("sending %u bytes\n", out_buf.cbBuffer);
 454
 455             size = sock_send(conn->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
 456             if(size != out_buf.cbBuffer) {
 457                 ERR("send failed\n");
 458                 res = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 459                 break;
 460             }
 461
 462             FreeContextBuffer(out_buf.pvBuffer);
 463             out_buf.pvBuffer = NULL;
 464             out_buf.cbBuffer = 0;
 465         }
 466
 467         if(status == SEC_I_CONTINUE_NEEDED) {
 468             assert(in_bufs[1].cbBuffer < read_buf_size);
 469
 470             memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
 471             in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
 472
 473             in_bufs[1].BufferType = SECBUFFER_EMPTY;
 474             in_bufs[1].cbBuffer = 0;
 475             in_bufs[1].pvBuffer = NULL;
 476         }
 477
 478         assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
 479         assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
 480
 481         if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
 482             BYTE *new_read_buf;
 483
 484             new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
 485             if(!new_read_buf) {
 486                 status = E_OUTOFMEMORY;
 487                 break;
 488             }
 489
 490             in_bufs[0].pvBuffer = read_buf = new_read_buf;
 491             read_buf_size += 1024;
 492         }
 493
 494         size = sock_recv(conn->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
 495         if(size < 1) {
 496             WARN("recv error\n");
 497             status = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 498             break;
 499         }
 500
 501         TRACE("recv %lu bytes\n", size);
 502
 503         in_bufs[0].cbBuffer += size;
 504         in_bufs[0].pvBuffer = read_buf;
 505         status = InitializeSecurityContextW(&cred_handle, &ctx, hostname,  isc_req_flags, 0, 0, &in_desc,
 506                 0, NULL, &out_desc, &attrs, NULL);
 507         TRACE("InitializeSecurityContext ret %08x\n", status);
 508
 509         if(status == SEC_E_OK) {
 510             if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
 511                 FIXME("SECBUFFER_EXTRA not supported\n");
 512
 513             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &conn->ssl_sizes);
 514             if(status != SEC_E_OK) {
 515                 WARN("Could not get sizes\n");
 516                 break;
 517             }
 518
 519             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
 520             if(status == SEC_E_OK) {
 521                 res = netconn_verify_cert(cert, hostname, conn->security_flags);
 522                 CertFreeCertificateContext(cert);
 523                 if(res != ERROR_SUCCESS) {
 524                     WARN("cert verify failed: %u\n", res);
 525                     break;
 526                 }
 527             }else {
 528                 WARN("Could not get cert\n");
 529                 break;
 530             }
 531
 532             conn->ssl_buf = heap_alloc(conn->ssl_sizes.cbHeader + conn->ssl_sizes.cbMaximumMessage + conn->ssl_sizes.cbTrailer);
 533             if(!conn->ssl_buf) {
 534                 res = GetLastError();
 535                 break;
 536             }
 537         }
 538     }
 539
 540     heap_free(read_buf);
 541
 542     if(status != SEC_E_OK || res != ERROR_SUCCESS) {
 543         WARN("Failed to initialize security context failed: %08x\n", status);
 544         heap_free(conn->ssl_buf);
 545         conn->ssl_buf = NULL;
 546         DeleteSecurityContext(&ctx);
 547         set_last_error(res ? res : ERROR_WINHTTP_SECURE_CHANNEL_ERROR);
 548         return FALSE;
 549     }
 550
 551
 552     TRACE("established SSL connection\n");
 553     conn->secure = TRUE;
 554     conn->ssl_ctx = ctx;
 555     return TRUE;
 556 }
 557
 558 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
 559 {
 560     SecBuffer bufs[4] = {
 561         {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
 562         {size,  SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
 563         {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
 564         {0, SECBUFFER_EMPTY, NULL}
 565     };
 566     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 567     SECURITY_STATUS res;
 568
 569     memcpy(bufs[1].pvBuffer, msg, size);
 570     res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
 571     if(res != SEC_E_OK) {
 572         WARN("EncryptMessage failed\n");
 573         return FALSE;
 574     }
 575
 576     if(sock_send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
 577         WARN("send failed\n");
 578         return FALSE;
 579     }
 580
 581     return TRUE;
 582 }
 583
 584 BOOL netconn_send( netconn_t *conn, const void *msg, size_t len, int *sent )
 585 {
 586     if (!netconn_connected( conn )) return FALSE;
 587     if (conn->secure)
 588     {
 589         const BYTE *ptr = msg;
 590         size_t chunk_size;
 591
 592         *sent = 0;
 593
 594         while(len) {
 595             chunk_size = min(len, conn->ssl_sizes.cbMaximumMessage);
 596             if(!send_ssl_chunk(conn, ptr, chunk_size))
 597                 return FALSE;
 598
 599             *sent += chunk_size;
 600             ptr += chunk_size;
 601             len -= chunk_size;
 602         }
 603
 604         return TRUE;
 605     }
 606     if ((*sent = sock_send( conn->socket, msg, len, 0 )) == -1)
 607     {
 608         set_last_error( sock_get_error( errno ) );
 609         return FALSE;
 610     }
 611     return TRUE;
 612 }
 613
 614 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *ret_size, BOOL *eof)
 615 {
 616     const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
 617     SecBuffer bufs[4];
 618     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 619     SSIZE_T size, buf_len;
 620     unsigned int i;
 621     SECURITY_STATUS res;
 622
 623     assert(conn->extra_len < ssl_buf_size);
 624
 625     if(conn->extra_len) {
 626         memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
 627         buf_len = conn->extra_len;
 628         conn->extra_len = 0;
 629         heap_free(conn->extra_buf);
 630         conn->extra_buf = NULL;
 631     }else {
 632         buf_len = sock_recv(conn->socket, conn->ssl_buf+conn->extra_len, ssl_buf_size-conn->extra_len, 0);
 633         if(buf_len < 0) {
 634             WARN("recv failed\n");
 635             return FALSE;
 636         }
 637
 638         if(!buf_len) {
 639             *eof = TRUE;
 640             return TRUE;
 641         }
 642     }
 643
 644     *ret_size = 0;
 645     *eof = FALSE;
 646
 647     do {
 648         memset(bufs, 0, sizeof(bufs));
 649         bufs[0].BufferType = SECBUFFER_DATA;
 650         bufs[0].cbBuffer = buf_len;
 651         bufs[0].pvBuffer = conn->ssl_buf;
 652
 653         res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
 654         switch(res) {
 655         case SEC_E_OK:
 656             break;
 657         case SEC_I_CONTEXT_EXPIRED:
 658             TRACE("context expired\n");
 659             *eof = TRUE;
 660             return TRUE;
 661         case SEC_E_INCOMPLETE_MESSAGE:
 662             assert(buf_len < ssl_buf_size);
 663
 664             size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
 665             if(size < 1)
 666                 return FALSE;
 667
 668             buf_len += size;
 669             continue;
 670         default:
 671             WARN("failed: %08x\n", res);
 672             return FALSE;
 673         }
 674     } while(res != SEC_E_OK);
 675
 676     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 677         if(bufs[i].BufferType == SECBUFFER_DATA) {
 678             size = min(buf_size, bufs[i].cbBuffer);
 679             memcpy(buf, bufs[i].pvBuffer, size);
 680             if(size < bufs[i].cbBuffer) {
 681                 assert(!conn->peek_len);
 682                 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
 683                 if(!conn->peek_msg)
 684                     return FALSE;
 685                 conn->peek_len = bufs[i].cbBuffer-size;
 686                 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
 687             }
 688
 689             *ret_size = size;
 690         }
 691     }
 692
 693     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 694         if(bufs[i].BufferType == SECBUFFER_EXTRA) {
 695             conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
 696             if(!conn->extra_buf)
 697                 return FALSE;
 698
 699             conn->extra_len = bufs[i].cbBuffer;
 700             memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
 701         }
 702     }
 703
 704     return TRUE;
 705 }
 706
 707 BOOL netconn_recv( netconn_t *conn, void *buf, size_t len, int flags, int *recvd )
 708 {
 709     *recvd = 0;
 710     if (!netconn_connected( conn )) return FALSE;
 711     if (!len) return TRUE;
 712
 713     if (conn->secure)
 714     {
 715         SIZE_T size, cread;
 716         BOOL res, eof;
 717
 718         if (conn->peek_msg)
 719         {
 720             *recvd = min( len, conn->peek_len );
 721             memcpy( buf, conn->peek_msg, *recvd );
 722             conn->peek_len -= *recvd;
 723             conn->peek_msg += *recvd;
 724
 725             if (conn->peek_len == 0)
 726             {
 727                 heap_free( conn->peek_msg_mem );
 728                 conn->peek_msg_mem = NULL;
 729                 conn->peek_msg = NULL;
 730             }
 731             /* check if we have enough data from the peek buffer */
 732             if (!(flags & MSG_WAITALL) || *recvd == len) return TRUE;
 733         }
 734         size = *recvd;
 735
 736         do {
 737             res = read_ssl_chunk(conn, (BYTE*)buf+size, len-size, &cread, &eof);
 738             if(!res) {
 739                 WARN("read_ssl_chunk failed\n");
 740                 if(!size)
 741                     return FALSE;
 742                 break;
 743             }
 744
 745             if(eof) {
 746                 TRACE("EOF\n");
 747                 break;
 748             }
 749
 750             size += cread;
 751         }while(!size || ((flags & MSG_WAITALL) && size < len));
 752
 753         TRACE("received %ld bytes\n", size);
 754         *recvd = size;
 755         return TRUE;
 756     }
 757     if ((*recvd = sock_recv( conn->socket, buf, len, flags )) == -1)
 758     {
 759         set_last_error( sock_get_error( errno ) );
 760         return FALSE;
 761     }
 762     return TRUE;
 763 }
 764
 765 ULONG netconn_query_data_available( netconn_t *conn )
 766 {
 767     if(!netconn_connected(conn))
 768         return 0;
 769
 770     if(conn->secure)
 771         return conn->peek_len;
 772
 773     return 0;
 774 }
 775
 776 DWORD netconn_set_timeout( netconn_t *netconn, BOOL send, int value )
 777 {
 778     struct timeval tv;
 779
 780     /* value is in milliseconds, convert to struct timeval */
 781     tv.tv_sec = value / 1000;
 782     tv.tv_usec = (value % 1000) * 1000;
 783
 784     if (setsockopt( netconn->socket, SOL_SOCKET, send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv, sizeof(tv) ) == -1)
 785     {
 786         WARN("setsockopt failed (%s)\n", strerror( errno ));
 787         return sock_get_error( errno );
 788     }
 789     return ERROR_SUCCESS;
 790 }
 791
 792 static DWORD resolve_hostname( const WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr *sa, socklen_t *sa_len )
 793 {
 794     char *hostname;
 795 #ifdef HAVE_GETADDRINFO
 796     struct addrinfo *res, hints;
 797     int ret;
 798 #else
 799     struct hostent *he;
 800     struct sockaddr_in *sin = (struct sockaddr_in *)sa;
 801 #endif
 802
 803     if (!(hostname = strdupWA( hostnameW ))) return ERROR_OUTOFMEMORY;
 804
 805 #ifdef HAVE_GETADDRINFO
 806     memset( &hints, 0, sizeof(struct addrinfo) );
 807     /* Prefer IPv4 to IPv6 addresses, since some web servers do not listen on
 808      * their IPv6 addresses even though they have IPv6 addresses in the DNS.
 809      */
 810     hints.ai_family = AF_INET;
 811
 812     ret = getaddrinfo( hostname, NULL, &hints, &res );
 813     if (ret != 0)
 814     {
 815         TRACE("failed to get IPv4 address of %s (%s), retrying with IPv6\n", debugstr_w(hostnameW), gai_strerror(ret));
 816         hints.ai_family = AF_INET6;
 817         ret = getaddrinfo( hostname, NULL, &hints, &res );
 818         if (ret != 0)
 819         {
 820             TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret));
 821             heap_free( hostname );
 822             return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 823         }
 824     }
 825     heap_free( hostname );
 826     if (*sa_len < res->ai_addrlen)
 827     {
 828         WARN("address too small\n");
 829         freeaddrinfo( res );
 830         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 831     }
 832     *sa_len = res->ai_addrlen;
 833     memcpy( sa, res->ai_addr, res->ai_addrlen );
 834     /* Copy port */
 835     switch (res->ai_family)
 836     {
 837     case AF_INET:
 838         ((struct sockaddr_in *)sa)->sin_port = htons( port );
 839         break;
 840     case AF_INET6:
 841         ((struct sockaddr_in6 *)sa)->sin6_port = htons( port );
 842         break;
 843     }
 844
 845     freeaddrinfo( res );
 846     return ERROR_SUCCESS;
 847 #else
 848     EnterCriticalSection( &cs_gethostbyname );
 849
 850     he = gethostbyname( hostname );
 851     heap_free( hostname );
 852     if (!he)
 853     {
 854         TRACE("failed to get address of %s (%d)\n", debugstr_w(hostnameW), h_errno);
 855         LeaveCriticalSection( &cs_gethostbyname );
 856         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 857     }
 858     if (*sa_len < sizeof(struct sockaddr_in))
 859     {
 860         WARN("address too small\n");
 861         LeaveCriticalSection( &cs_gethostbyname );
 862         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 863     }
 864     *sa_len = sizeof(struct sockaddr_in);
 865     memset( sa, 0, sizeof(struct sockaddr_in) );
 866     memcpy( &sin->sin_addr, he->h_addr, he->h_length );
 867     sin->sin_family = he->h_addrtype;
 868     sin->sin_port = htons( port );
 869
 870     LeaveCriticalSection( &cs_gethostbyname );
 871     return ERROR_SUCCESS;
 872 #endif
 873 }
 874
 875 struct resolve_args
 876 {
 877     const WCHAR     *hostname;
 878     INTERNET_PORT    port;
 879     struct sockaddr *sa;
 880     socklen_t       *sa_len;
 881 };
 882
 883 static DWORD CALLBACK resolve_proc( LPVOID arg )
 884 {
 885     struct resolve_args *ra = arg;
 886     return resolve_hostname( ra->hostname, ra->port, ra->sa, ra->sa_len );
 887 }
 888
 889 BOOL netconn_resolve( WCHAR *hostname, INTERNET_PORT port, struct sockaddr *sa, socklen_t *sa_len, int timeout )
 890 {
 891     DWORD ret;
 892
 893     if (timeout)
 894     {
 895         DWORD status;
 896         HANDLE thread;
 897         struct resolve_args ra;
 898
 899         ra.hostname = hostname;
 900         ra.port     = port;
 901         ra.sa       = sa;
 902         ra.sa_len   = sa_len;
 903
 904         thread = CreateThread( NULL, 0, resolve_proc, &ra, 0, NULL );
 905         if (!thread) return FALSE;
 906
 907         status = WaitForSingleObject( thread, timeout );
 908         if (status == WAIT_OBJECT_0) GetExitCodeThread( thread, &ret );
 909         else ret = ERROR_WINHTTP_TIMEOUT;
 910         CloseHandle( thread );
 911     }
 912     else ret = resolve_hostname( hostname, port, sa, sa_len );
 913
 914     if (ret)
 915     {
 916         set_last_error( ret );
 917         return FALSE;
 918     }
 919     return TRUE;
 920 }
 921
 922 const void *netconn_get_certificate( netconn_t *conn )
 923 {
 924     const CERT_CONTEXT *ret;
 925     SECURITY_STATUS res;
 926
 927     if (!conn->secure) return NULL;
 928     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
 929     return res == SEC_E_OK ? ret : NULL;
 930 }
 931
 932 int netconn_get_cipher_strength( netconn_t *conn )
 933 {
 934     SecPkgContext_ConnectionInfo conn_info;
 935     SECURITY_STATUS res;
 936
 937     if (!conn->secure) return 0;
 938     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
 939     if(res != SEC_E_OK)
 940         WARN("QueryContextAttributesW failed: %08x\n", res);
 941     return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
 942 }