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 DWORD netconn_verify_cert( PCCERT_CONTEXT cert, WCHAR *server, DWORD security_flags )
 143 {
 144     HCERTSTORE store = cert->hCertStore;
 145     BOOL ret;
 146     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
 147     PCCERT_CHAIN_CONTEXT chain;
 148     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
 149     char *server_auth[] = { oid_server_auth };
 150     DWORD err = ERROR_SUCCESS;
 151
 152     TRACE("verifying %s\n", debugstr_w( server ));
 153     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
 154     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
 155     if ((ret = CertGetCertificateChain( NULL, cert, NULL, store, &chainPara,
 156                                         CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT,
 157                                         NULL, &chain )))
 158     {
 159         if (chain->TrustStatus.dwErrorStatus)
 160         {
 161             static const DWORD supportedErrors =
 162                 CERT_TRUST_IS_NOT_TIME_VALID |
 163                 CERT_TRUST_IS_UNTRUSTED_ROOT |
 164                 CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 165
 166             if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_NOT_TIME_VALID)
 167             {
 168                 if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID))
 169                     err = ERROR_WINHTTP_SECURE_CERT_DATE_INVALID;
 170             }
 171             else if (chain->TrustStatus.dwErrorStatus &
 172                      CERT_TRUST_IS_UNTRUSTED_ROOT)
 173             {
 174                 if (!(security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA))
 175                     err = ERROR_WINHTTP_SECURE_INVALID_CA;
 176             }
 177             else if ((chain->TrustStatus.dwErrorStatus &
 178                       CERT_TRUST_IS_OFFLINE_REVOCATION) ||
 179                      (chain->TrustStatus.dwErrorStatus &
 180                       CERT_TRUST_REVOCATION_STATUS_UNKNOWN))
 181                 err = ERROR_WINHTTP_SECURE_CERT_REV_FAILED;
 182             else if (chain->TrustStatus.dwErrorStatus & CERT_TRUST_IS_REVOKED)
 183                 err = ERROR_WINHTTP_SECURE_CERT_REVOKED;
 184             else if (chain->TrustStatus.dwErrorStatus &
 185                 CERT_TRUST_IS_NOT_VALID_FOR_USAGE)
 186             {
 187                 if (!(security_flags & SECURITY_FLAG_IGNORE_CERT_WRONG_USAGE))
 188                     err = ERROR_WINHTTP_SECURE_CERT_WRONG_USAGE;
 189             }
 190             else if (chain->TrustStatus.dwErrorStatus & ~supportedErrors)
 191                 err = ERROR_WINHTTP_SECURE_INVALID_CERT;
 192         }
 193         if (!err)
 194         {
 195             CERT_CHAIN_POLICY_PARA policyPara;
 196             SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
 197             CERT_CHAIN_POLICY_STATUS policyStatus;
 198             CERT_CHAIN_CONTEXT chainCopy;
 199
 200             /* Clear chain->TrustStatus.dwErrorStatus so
 201              * CertVerifyCertificateChainPolicy will verify additional checks
 202              * rather than stopping with an existing, ignored error.
 203              */
 204             memcpy(&chainCopy, chain, sizeof(chainCopy));
 205             chainCopy.TrustStatus.dwErrorStatus = 0;
 206             sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
 207             sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
 208             sslExtraPolicyPara.pwszServerName = server;
 209             sslExtraPolicyPara.fdwChecks = security_flags;
 210             policyPara.cbSize = sizeof(policyPara);
 211             policyPara.dwFlags = 0;
 212             policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
 213             ret = CertVerifyCertificateChainPolicy( CERT_CHAIN_POLICY_SSL,
 214                                                     &chainCopy, &policyPara,
 215                                                     &policyStatus );
 216             /* Any error in the policy status indicates that the
 217              * policy couldn't be verified.
 218              */
 219             if (ret && policyStatus.dwError)
 220             {
 221                 if (policyStatus.dwError == CERT_E_CN_NO_MATCH)
 222                     err = ERROR_WINHTTP_SECURE_CERT_CN_INVALID;
 223                 else
 224                     err = ERROR_WINHTTP_SECURE_INVALID_CERT;
 225             }
 226         }
 227         CertFreeCertificateChain( chain );
 228     }
 229     else
 230         err = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 231     TRACE("returning %08x\n", err);
 232     return err;
 233 }
 234
 235 static SecHandle cred_handle;
 236 static BOOL cred_handle_initialized;
 237
 238 static CRITICAL_SECTION init_sechandle_cs;
 239 static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = {
 240     0, 0, &init_sechandle_cs,
 241     { &init_sechandle_cs_debug.ProcessLocksList,
 242       &init_sechandle_cs_debug.ProcessLocksList },
 243     0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") }
 244 };
 245 static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 };
 246
 247 static BOOL ensure_cred_handle(void)
 248 {
 249     BOOL ret = TRUE;
 250
 251     EnterCriticalSection(&init_sechandle_cs);
 252
 253     if(!cred_handle_initialized) {
 254         SECURITY_STATUS res;
 255
 256         res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, NULL,
 257                 NULL, NULL, &cred_handle, NULL);
 258         if(res == SEC_E_OK) {
 259             cred_handle_initialized = TRUE;
 260         }else {
 261             WARN("AcquireCredentialsHandleW failed: %u\n", res);
 262             ret = FALSE;
 263         }
 264     }
 265
 266     LeaveCriticalSection(&init_sechandle_cs);
 267     return ret;
 268 }
 269
 270 BOOL netconn_init( netconn_t *conn )
 271 {
 272     memset(conn, 0, sizeof(*conn));
 273     conn->socket = -1;
 274     return TRUE;
 275 }
 276
 277 void netconn_unload( void )
 278 {
 279     if(cred_handle_initialized)
 280         FreeCredentialsHandle(&cred_handle);
 281     DeleteCriticalSection(&init_sechandle_cs);
 282 #ifndef HAVE_GETADDRINFO
 283     DeleteCriticalSection(&cs_gethostbyname);
 284 #endif
 285 }
 286
 287 BOOL netconn_connected( netconn_t *conn )
 288 {
 289     return (conn->socket != -1);
 290 }
 291
 292 BOOL netconn_create( netconn_t *conn, int domain, int type, int protocol )
 293 {
 294     if ((conn->socket = socket( domain, type, protocol )) == -1)
 295     {
 296         WARN("unable to create socket (%s)\n", strerror(errno));
 297         set_last_error( sock_get_error( errno ) );
 298         return FALSE;
 299     }
 300     return TRUE;
 301 }
 302
 303 BOOL netconn_close( netconn_t *conn )
 304 {
 305     int res;
 306
 307     if (conn->secure)
 308     {
 309         heap_free( conn->peek_msg_mem );
 310         conn->peek_msg_mem = NULL;
 311         conn->peek_msg = NULL;
 312         conn->peek_len = 0;
 313         heap_free(conn->ssl_buf);
 314         conn->ssl_buf = NULL;
 315         heap_free(conn->extra_buf);
 316         conn->extra_buf = NULL;
 317         conn->extra_len = 0;
 318         DeleteSecurityContext(&conn->ssl_ctx);
 319         conn->secure = FALSE;
 320     }
 321     res = closesocket( conn->socket );
 322     conn->socket = -1;
 323     if (res == -1)
 324     {
 325         set_last_error( sock_get_error( errno ) );
 326         return FALSE;
 327     }
 328     return TRUE;
 329 }
 330
 331 BOOL netconn_connect( netconn_t *conn, const struct sockaddr *sockaddr, unsigned int addr_len, int timeout )
 332 {
 333     BOOL ret = FALSE;
 334     int res = 0;
 335     ULONG state;
 336
 337     if (timeout > 0)
 338     {
 339         state = 1;
 340         ioctlsocket( conn->socket, FIONBIO, &state );
 341     }
 342     if (connect( conn->socket, sockaddr, addr_len ) < 0)
 343     {
 344         res = sock_get_error( errno );
 345         if (res == WSAEWOULDBLOCK || res == WSAEINPROGRESS)
 346         {
 347             struct pollfd pfd;
 348
 349             pfd.fd = conn->socket;
 350             pfd.events = POLLOUT;
 351             if (poll( &pfd, 1, timeout ) > 0)
 352                 ret = TRUE;
 353             else
 354                 res = sock_get_error( errno );
 355         }
 356     }
 357     else
 358         ret = TRUE;
 359     if (timeout > 0)
 360     {
 361         state = 0;
 362         ioctlsocket( conn->socket, FIONBIO, &state );
 363     }
 364     if (!ret)
 365     {
 366         WARN("unable to connect to host (%d)\n", res);
 367         set_last_error( res );
 368     }
 369     return ret;
 370 }
 371
 372 BOOL netconn_secure_connect( netconn_t *conn, WCHAR *hostname )
 373 {
 374     SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
 375     SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
 376     BYTE *read_buf;
 377     SIZE_T read_buf_size = 2048;
 378     ULONG attrs = 0;
 379     CtxtHandle ctx;
 380     SSIZE_T size;
 381     const CERT_CONTEXT *cert;
 382     SECURITY_STATUS status;
 383     DWORD res = ERROR_SUCCESS;
 384
 385     const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
 386         |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
 387
 388     if(!ensure_cred_handle())
 389         return FALSE;
 390
 391     read_buf = heap_alloc(read_buf_size);
 392     if(!read_buf)
 393         return FALSE;
 394
 395     status = InitializeSecurityContextW(&cred_handle, NULL, hostname, isc_req_flags, 0, 0, NULL, 0,
 396             &ctx, &out_desc, &attrs, NULL);
 397
 398     assert(status != SEC_E_OK);
 399
 400     while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
 401         if(out_buf.cbBuffer) {
 402             assert(status == SEC_I_CONTINUE_NEEDED);
 403
 404             TRACE("sending %u bytes\n", out_buf.cbBuffer);
 405
 406             size = send(conn->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
 407             if(size != out_buf.cbBuffer) {
 408                 ERR("send failed\n");
 409                 res = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 410                 break;
 411             }
 412
 413             FreeContextBuffer(out_buf.pvBuffer);
 414             out_buf.pvBuffer = NULL;
 415             out_buf.cbBuffer = 0;
 416         }
 417
 418         if(status == SEC_I_CONTINUE_NEEDED) {
 419             assert(in_bufs[1].cbBuffer < read_buf_size);
 420
 421             memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
 422             in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
 423
 424             in_bufs[1].BufferType = SECBUFFER_EMPTY;
 425             in_bufs[1].cbBuffer = 0;
 426             in_bufs[1].pvBuffer = NULL;
 427         }
 428
 429         assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
 430         assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
 431
 432         if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
 433             BYTE *new_read_buf;
 434
 435             new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
 436             if(!new_read_buf) {
 437                 status = E_OUTOFMEMORY;
 438                 break;
 439             }
 440
 441             in_bufs[0].pvBuffer = read_buf = new_read_buf;
 442             read_buf_size += 1024;
 443         }
 444
 445         size = recv(conn->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
 446         if(size < 1) {
 447             WARN("recv error\n");
 448             status = ERROR_WINHTTP_SECURE_CHANNEL_ERROR;
 449             break;
 450         }
 451
 452         TRACE("recv %lu bytes\n", size);
 453
 454         in_bufs[0].cbBuffer += size;
 455         in_bufs[0].pvBuffer = read_buf;
 456         status = InitializeSecurityContextW(&cred_handle, &ctx, hostname,  isc_req_flags, 0, 0, &in_desc,
 457                 0, NULL, &out_desc, &attrs, NULL);
 458         TRACE("InitializeSecurityContext ret %08x\n", status);
 459
 460         if(status == SEC_E_OK) {
 461             if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
 462                 FIXME("SECBUFFER_EXTRA not supported\n");
 463
 464             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &conn->ssl_sizes);
 465             if(status != SEC_E_OK) {
 466                 WARN("Could not get sizes\n");
 467                 break;
 468             }
 469
 470             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
 471             if(status == SEC_E_OK) {
 472                 res = netconn_verify_cert(cert, hostname, conn->security_flags);
 473                 CertFreeCertificateContext(cert);
 474                 if(res != ERROR_SUCCESS) {
 475                     WARN("cert verify failed: %u\n", res);
 476                     break;
 477                 }
 478             }else {
 479                 WARN("Could not get cert\n");
 480                 break;
 481             }
 482
 483             conn->ssl_buf = heap_alloc(conn->ssl_sizes.cbHeader + conn->ssl_sizes.cbMaximumMessage + conn->ssl_sizes.cbTrailer);
 484             if(!conn->ssl_buf) {
 485                 res = GetLastError();
 486                 break;
 487             }
 488         }
 489     }
 490
 491
 492     if(status != SEC_E_OK || res != ERROR_SUCCESS) {
 493         WARN("Failed to initialize security context failed: %08x\n", status);
 494         heap_free(conn->ssl_buf);
 495         conn->ssl_buf = NULL;
 496         DeleteSecurityContext(&ctx);
 497         set_last_error(res ? res : ERROR_WINHTTP_SECURE_CHANNEL_ERROR);
 498         return FALSE;
 499     }
 500
 501
 502     TRACE("established SSL connection\n");
 503     conn->secure = TRUE;
 504     conn->ssl_ctx = ctx;
 505     return TRUE;
 506 }
 507
 508 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
 509 {
 510     SecBuffer bufs[4] = {
 511         {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
 512         {size,  SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
 513         {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
 514         {0, SECBUFFER_EMPTY, NULL}
 515     };
 516     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 517     SECURITY_STATUS res;
 518
 519     memcpy(bufs[1].pvBuffer, msg, size);
 520     res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
 521     if(res != SEC_E_OK) {
 522         WARN("EncryptMessage failed\n");
 523         return FALSE;
 524     }
 525
 526     if(send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
 527         WARN("send failed\n");
 528         return FALSE;
 529     }
 530
 531     return TRUE;
 532 }
 533
 534 BOOL netconn_send( netconn_t *conn, const void *msg, size_t len, int *sent )
 535 {
 536     if (!netconn_connected( conn )) return FALSE;
 537     if (conn->secure)
 538     {
 539         const BYTE *ptr = msg;
 540         size_t chunk_size;
 541
 542         *sent = 0;
 543
 544         while(len) {
 545             chunk_size = min(len, conn->ssl_sizes.cbMaximumMessage);
 546             if(!send_ssl_chunk(conn, ptr, chunk_size))
 547                 return FALSE;
 548
 549             *sent += chunk_size;
 550             ptr += chunk_size;
 551             len -= chunk_size;
 552         }
 553
 554         return TRUE;
 555     }
 556     if ((*sent = send( conn->socket, msg, len, 0 )) == -1)
 557     {
 558         set_last_error( sock_get_error( errno ) );
 559         return FALSE;
 560     }
 561     return TRUE;
 562 }
 563
 564 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *ret_size, BOOL *eof)
 565 {
 566     const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
 567     SecBuffer bufs[4];
 568     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 569     SSIZE_T size, buf_len;
 570     unsigned int i;
 571     SECURITY_STATUS res;
 572
 573     assert(conn->extra_len < ssl_buf_size);
 574
 575     if(conn->extra_len) {
 576         memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
 577         buf_len = conn->extra_len;
 578         conn->extra_len = 0;
 579         heap_free(conn->extra_buf);
 580         conn->extra_buf = NULL;
 581     }else {
 582         buf_len = recv(conn->socket, conn->ssl_buf+conn->extra_len, ssl_buf_size-conn->extra_len, 0);
 583         if(buf_len < 0) {
 584             WARN("recv failed\n");
 585             return FALSE;
 586         }
 587
 588         if(!buf_len) {
 589             *eof = TRUE;
 590             return TRUE;
 591         }
 592     }
 593
 594     *ret_size = 0;
 595     *eof = FALSE;
 596
 597     do {
 598         memset(bufs, 0, sizeof(bufs));
 599         bufs[0].BufferType = SECBUFFER_DATA;
 600         bufs[0].cbBuffer = buf_len;
 601         bufs[0].pvBuffer = conn->ssl_buf;
 602
 603         res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
 604         switch(res) {
 605         case SEC_E_OK:
 606             break;
 607         case SEC_I_CONTEXT_EXPIRED:
 608             TRACE("context expired\n");
 609             *eof = TRUE;
 610             return TRUE;
 611         case SEC_E_INCOMPLETE_MESSAGE:
 612             assert(buf_len < ssl_buf_size);
 613
 614             size = recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
 615             if(size < 1)
 616                 return FALSE;
 617
 618             buf_len += size;
 619             continue;
 620         default:
 621             WARN("failed: %08x\n", res);
 622             return FALSE;
 623         }
 624     } while(res != SEC_E_OK);
 625
 626     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 627         if(bufs[i].BufferType == SECBUFFER_DATA) {
 628             size = min(buf_size, bufs[i].cbBuffer);
 629             memcpy(buf, bufs[i].pvBuffer, size);
 630             if(size < bufs[i].cbBuffer) {
 631                 assert(!conn->peek_len);
 632                 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
 633                 if(!conn->peek_msg)
 634                     return FALSE;
 635                 conn->peek_len = bufs[i].cbBuffer-size;
 636                 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
 637             }
 638
 639             *ret_size = size;
 640         }
 641     }
 642
 643     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 644         if(bufs[i].BufferType == SECBUFFER_EXTRA) {
 645             conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
 646             if(!conn->extra_buf)
 647                 return FALSE;
 648
 649             conn->extra_len = bufs[i].cbBuffer;
 650             memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
 651         }
 652     }
 653
 654     return TRUE;
 655 }
 656
 657 BOOL netconn_recv( netconn_t *conn, void *buf, size_t len, int flags, int *recvd )
 658 {
 659     *recvd = 0;
 660     if (!netconn_connected( conn )) return FALSE;
 661     if (!len) return TRUE;
 662
 663     if (conn->secure)
 664     {
 665         SIZE_T size, cread;
 666         BOOL res, eof;
 667
 668         if (conn->peek_msg)
 669         {
 670             *recvd = min( len, conn->peek_len );
 671             memcpy( buf, conn->peek_msg, *recvd );
 672             conn->peek_len -= *recvd;
 673             conn->peek_msg += *recvd;
 674
 675             if (conn->peek_len == 0)
 676             {
 677                 heap_free( conn->peek_msg_mem );
 678                 conn->peek_msg_mem = NULL;
 679                 conn->peek_msg = NULL;
 680             }
 681             /* check if we have enough data from the peek buffer */
 682             if (!(flags & MSG_WAITALL) || *recvd == len) return TRUE;
 683         }
 684         size = *recvd;
 685
 686         do {
 687             res = read_ssl_chunk(conn, (BYTE*)buf+size, len-size, &cread, &eof);
 688             if(!res) {
 689                 WARN("read_ssl_chunk failed\n");
 690                 if(!size)
 691                     return FALSE;
 692                 break;
 693             }
 694
 695             if(eof) {
 696                 TRACE("EOF\n");
 697                 break;
 698             }
 699
 700             size += cread;
 701         }while(!size || ((flags & MSG_WAITALL) && size < len));
 702
 703         TRACE("received %ld bytes\n", size);
 704         *recvd = size;
 705         return TRUE;
 706     }
 707     if ((*recvd = recv( conn->socket, buf, len, flags )) == -1)
 708     {
 709         set_last_error( sock_get_error( errno ) );
 710         return FALSE;
 711     }
 712     return TRUE;
 713 }
 714
 715 ULONG netconn_query_data_available( netconn_t *conn )
 716 {
 717     if(!netconn_connected(conn))
 718         return 0;
 719
 720     if(conn->secure) {
 721         return conn->peek_len;
 722     }else {
 723 #ifdef FIONREAD
 724         ULONG unread;
 725
 726         if(!ioctlsocket(conn->socket, FIONREAD, &unread))
 727             return unread;
 728 #endif
 729     }
 730
 731     return 0;
 732 }
 733
 734 DWORD netconn_set_timeout( netconn_t *netconn, BOOL send, int value )
 735 {
 736     struct timeval tv;
 737
 738     /* value is in milliseconds, convert to struct timeval */
 739     tv.tv_sec = value / 1000;
 740     tv.tv_usec = (value % 1000) * 1000;
 741
 742     if (setsockopt( netconn->socket, SOL_SOCKET, send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv, sizeof(tv) ) == -1)
 743     {
 744         WARN("setsockopt failed (%s)\n", strerror( errno ));
 745         return sock_get_error( errno );
 746     }
 747     return ERROR_SUCCESS;
 748 }
 749
 750 static DWORD resolve_hostname( const WCHAR *hostnameW, INTERNET_PORT port, struct sockaddr *sa, socklen_t *sa_len )
 751 {
 752     char *hostname;
 753 #ifdef HAVE_GETADDRINFO
 754     struct addrinfo *res, hints;
 755     int ret;
 756 #else
 757     struct hostent *he;
 758     struct sockaddr_in *sin = (struct sockaddr_in *)sa;
 759 #endif
 760
 761     if (!(hostname = strdupWA( hostnameW ))) return ERROR_OUTOFMEMORY;
 762
 763 #ifdef HAVE_GETADDRINFO
 764     memset( &hints, 0, sizeof(struct addrinfo) );
 765     /* Prefer IPv4 to IPv6 addresses, since some web servers do not listen on
 766      * their IPv6 addresses even though they have IPv6 addresses in the DNS.
 767      */
 768     hints.ai_family = AF_INET;
 769
 770     ret = getaddrinfo( hostname, NULL, &hints, &res );
 771     if (ret != 0)
 772     {
 773         TRACE("failed to get IPv4 address of %s (%s), retrying with IPv6\n", debugstr_w(hostnameW), gai_strerror(ret));
 774         hints.ai_family = AF_INET6;
 775         ret = getaddrinfo( hostname, NULL, &hints, &res );
 776         if (ret != 0)
 777         {
 778             TRACE("failed to get address of %s (%s)\n", debugstr_w(hostnameW), gai_strerror(ret));
 779             heap_free( hostname );
 780             return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 781         }
 782     }
 783     heap_free( hostname );
 784     if (*sa_len < res->ai_addrlen)
 785     {
 786         WARN("address too small\n");
 787         freeaddrinfo( res );
 788         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 789     }
 790     *sa_len = res->ai_addrlen;
 791     memcpy( sa, res->ai_addr, res->ai_addrlen );
 792     /* Copy port */
 793     switch (res->ai_family)
 794     {
 795     case AF_INET:
 796         ((struct sockaddr_in *)sa)->sin_port = htons( port );
 797         break;
 798     case AF_INET6:
 799         ((struct sockaddr_in6 *)sa)->sin6_port = htons( port );
 800         break;
 801     }
 802
 803     freeaddrinfo( res );
 804     return ERROR_SUCCESS;
 805 #else
 806     EnterCriticalSection( &cs_gethostbyname );
 807
 808     he = gethostbyname( hostname );
 809     heap_free( hostname );
 810     if (!he)
 811     {
 812         TRACE("failed to get address of %s (%d)\n", debugstr_w(hostnameW), h_errno);
 813         LeaveCriticalSection( &cs_gethostbyname );
 814         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 815     }
 816     if (*sa_len < sizeof(struct sockaddr_in))
 817     {
 818         WARN("address too small\n");
 819         LeaveCriticalSection( &cs_gethostbyname );
 820         return ERROR_WINHTTP_NAME_NOT_RESOLVED;
 821     }
 822     *sa_len = sizeof(struct sockaddr_in);
 823     memset( sa, 0, sizeof(struct sockaddr_in) );
 824     memcpy( &sin->sin_addr, he->h_addr, he->h_length );
 825     sin->sin_family = he->h_addrtype;
 826     sin->sin_port = htons( port );
 827
 828     LeaveCriticalSection( &cs_gethostbyname );
 829     return ERROR_SUCCESS;
 830 #endif
 831 }
 832
 833 struct resolve_args
 834 {
 835     const WCHAR     *hostname;
 836     INTERNET_PORT    port;
 837     struct sockaddr *sa;
 838     socklen_t       *sa_len;
 839 };
 840
 841 static DWORD CALLBACK resolve_proc( LPVOID arg )
 842 {
 843     struct resolve_args *ra = arg;
 844     return resolve_hostname( ra->hostname, ra->port, ra->sa, ra->sa_len );
 845 }
 846
 847 BOOL netconn_resolve( WCHAR *hostname, INTERNET_PORT port, struct sockaddr *sa, socklen_t *sa_len, int timeout )
 848 {
 849     DWORD ret;
 850
 851     if (timeout)
 852     {
 853         DWORD status;
 854         HANDLE thread;
 855         struct resolve_args ra;
 856
 857         ra.hostname = hostname;
 858         ra.port     = port;
 859         ra.sa       = sa;
 860         ra.sa_len   = sa_len;
 861
 862         thread = CreateThread( NULL, 0, resolve_proc, &ra, 0, NULL );
 863         if (!thread) return FALSE;
 864
 865         status = WaitForSingleObject( thread, timeout );
 866         if (status == WAIT_OBJECT_0) GetExitCodeThread( thread, &ret );
 867         else ret = ERROR_WINHTTP_TIMEOUT;
 868         CloseHandle( thread );
 869     }
 870     else ret = resolve_hostname( hostname, port, sa, sa_len );
 871
 872     if (ret)
 873     {
 874         set_last_error( ret );
 875         return FALSE;
 876     }
 877     return TRUE;
 878 }
 879
 880 const void *netconn_get_certificate( netconn_t *conn )
 881 {
 882     const CERT_CONTEXT *ret;
 883     SECURITY_STATUS res;
 884
 885     if (!conn->secure) return NULL;
 886     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
 887     return res == SEC_E_OK ? ret : NULL;
 888 }
 889
 890 int netconn_get_cipher_strength( netconn_t *conn )
 891 {
 892     SecPkgContext_ConnectionInfo conn_info;
 893     SECURITY_STATUS res;
 894
 895     if (!conn->secure) return 0;
 896     res = QueryContextAttributesW(&conn->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
 897     if(res != SEC_E_OK)
 898         WARN("QueryContextAttributesW failed: %08x\n", res);
 899     return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
 900 }