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