dll/win32/wininet/netconnection.c

   1 /*
   2  * Wininet - networking layer. Uses unix sockets.
   3  *
   4  * Copyright 2002 TransGaming Technologies Inc.
   5  * Copyright 2013 Jacek Caban for CodeWeavers
   6  *
   7  * David Hammerton
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include "internet.h"
  25
  26 #include <sys/types.h>
  27 #ifdef HAVE_POLL_H
  28 #include <poll.h>
  29 #endif
  30 #ifdef HAVE_SYS_FILIO_H
  31 # include <sys/filio.h>
  32 #endif
  33 #ifdef HAVE_NETINET_TCP_H
  34 # include <netinet/tcp.h>
  35 #endif
  36
  37 #include <errno.h>
  38
  39 #define RESPONSE_TIMEOUT        30            /* FROM internet.c */
  40
  41 #ifdef MSG_DONTWAIT
  42 #define WINE_MSG_DONTWAIT MSG_DONTWAIT
  43 #else
  44 #define WINE_MSG_DONTWAIT 0
  45 #endif
  46
  47 /* FIXME!!!!!!
  48  *    This should use winsock - To use winsock the functions will have to change a bit
  49  *        as they are designed for unix sockets.
  50  */
  51
  52 static DWORD netconn_verify_cert(netconn_t *conn, PCCERT_CONTEXT cert, HCERTSTORE store)
  53 {
  54     BOOL ret;
  55     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
  56     PCCERT_CHAIN_CONTEXT chain;
  57     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
  58     char *server_auth[] = { oid_server_auth };
  59     DWORD err = ERROR_SUCCESS, errors;
  60
  61     static const DWORD supportedErrors =
  62         CERT_TRUST_IS_NOT_TIME_VALID |
  63         CERT_TRUST_IS_UNTRUSTED_ROOT |
  64         CERT_TRUST_IS_PARTIAL_CHAIN |
  65         CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
  66
  67     TRACE("verifying %s\n", debugstr_w(conn->server->name));
  68
  69     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
  70     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
  71     if (!(ret = CertGetCertificateChain(NULL, cert, NULL, store, &chainPara, 0, NULL, &chain))) {
  72         TRACE("failed\n");
  73         return GetLastError();
  74     }
  75
  76     errors = chain->TrustStatus.dwErrorStatus;
  77
  78     do {
  79         /* This seems strange, but that's what tests show */
  80         if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
  81             WARN("ERROR_INTERNET_SEC_CERT_REV_FAILED\n");
  82             err = ERROR_INTERNET_SEC_CERT_REV_FAILED;
  83             if(conn->mask_errors)
  84                 conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED;
  85             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
  86                 break;
  87         }
  88
  89         if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) {
  90             WARN("error status %x\n", chain->TrustStatus.dwErrorStatus & ~supportedErrors);
  91             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
  92             errors &= supportedErrors;
  93             if(!conn->mask_errors)
  94                 break;
  95             WARN("unknown error flags\n");
  96         }
  97
  98         if(errors & CERT_TRUST_IS_NOT_TIME_VALID) {
  99             WARN("CERT_TRUST_IS_NOT_TIME_VALID\n");
 100             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID)) {
 101                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_DATE_INVALID;
 102                 if(!conn->mask_errors)
 103                     break;
 104                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_DATE;
 105             }
 106             errors &= ~CERT_TRUST_IS_NOT_TIME_VALID;
 107         }
 108
 109         if(errors & CERT_TRUST_IS_UNTRUSTED_ROOT) {
 110             WARN("CERT_TRUST_IS_UNTRUSTED_ROOT\n");
 111             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 112                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 113                 if(!conn->mask_errors)
 114                     break;
 115                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 116             }
 117             errors &= ~CERT_TRUST_IS_UNTRUSTED_ROOT;
 118         }
 119
 120         if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
 121             WARN("CERT_TRUST_IS_PARTIAL_CHAIN\n");
 122             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 123                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 124                 if(!conn->mask_errors)
 125                     break;
 126                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 127             }
 128             errors &= ~CERT_TRUST_IS_PARTIAL_CHAIN;
 129         }
 130
 131         if(errors & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) {
 132             WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE\n");
 133             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_WRONG_USAGE)) {
 134                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 135                 if(!conn->mask_errors)
 136                     break;
 137                 WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE, unknown error flags\n");
 138             }
 139             errors &= ~CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 140         }
 141
 142         if(err == ERROR_INTERNET_SEC_CERT_REV_FAILED) {
 143             assert(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION);
 144             err = ERROR_SUCCESS;
 145         }
 146     }while(0);
 147
 148     if(!err || conn->mask_errors) {
 149         CERT_CHAIN_POLICY_PARA policyPara;
 150         SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
 151         CERT_CHAIN_POLICY_STATUS policyStatus;
 152         CERT_CHAIN_CONTEXT chainCopy;
 153
 154         /* Clear chain->TrustStatus.dwErrorStatus so
 155          * CertVerifyCertificateChainPolicy will verify additional checks
 156          * rather than stopping with an existing, ignored error.
 157          */
 158         memcpy(&chainCopy, chain, sizeof(chainCopy));
 159         chainCopy.TrustStatus.dwErrorStatus = 0;
 160         sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
 161         sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
 162         sslExtraPolicyPara.pwszServerName = conn->server->name;
 163         sslExtraPolicyPara.fdwChecks = conn->security_flags;
 164         policyPara.cbSize = sizeof(policyPara);
 165         policyPara.dwFlags = 0;
 166         policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
 167         ret = CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL,
 168                 &chainCopy, &policyPara, &policyStatus);
 169         /* Any error in the policy status indicates that the
 170          * policy couldn't be verified.
 171          */
 172         if(ret) {
 173             if(policyStatus.dwError == CERT_E_CN_NO_MATCH) {
 174                 WARN("CERT_E_CN_NO_MATCH\n");
 175                 if(conn->mask_errors)
 176                     conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CN;
 177                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_CN_INVALID;
 178             }else if(policyStatus.dwError) {
 179                 WARN("policyStatus.dwError %x\n", policyStatus.dwError);
 180                 if(conn->mask_errors)
 181                     WARN("unknown error flags for policy status %x\n", policyStatus.dwError);
 182                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 183             }
 184         }else {
 185             err = GetLastError();
 186         }
 187     }
 188
 189     if(err) {
 190         WARN("failed %u\n", err);
 191         CertFreeCertificateChain(chain);
 192         if(conn->server->cert_chain) {
 193             CertFreeCertificateChain(conn->server->cert_chain);
 194             conn->server->cert_chain = NULL;
 195         }
 196         if(conn->mask_errors)
 197             conn->server->security_flags |= conn->security_flags & _SECURITY_ERROR_FLAGS_MASK;
 198         return err;
 199     }
 200
 201     /* FIXME: Reuse cached chain */
 202     if(conn->server->cert_chain)
 203         CertFreeCertificateChain(chain);
 204     else
 205         conn->server->cert_chain = chain;
 206     return ERROR_SUCCESS;
 207 }
 208
 209 static SecHandle cred_handle, compat_cred_handle;
 210 static BOOL cred_handle_initialized, have_compat_cred_handle;
 211
 212 static CRITICAL_SECTION init_sechandle_cs;
 213 static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = {
 214     0, 0, &init_sechandle_cs,
 215     { &init_sechandle_cs_debug.ProcessLocksList,
 216       &init_sechandle_cs_debug.ProcessLocksList },
 217     0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") }
 218 };
 219 static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 };
 220
 221 static BOOL ensure_cred_handle(void)
 222 {
 223     SECURITY_STATUS res = SEC_E_OK;
 224
 225     EnterCriticalSection(&init_sechandle_cs);
 226
 227     if(!cred_handle_initialized) {
 228         SCHANNEL_CRED cred = {SCHANNEL_CRED_VERSION};
 229         SecPkgCred_SupportedProtocols prots;
 230
 231         res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
 232                 NULL, NULL, &cred_handle, NULL);
 233         if(res == SEC_E_OK) {
 234             res = QueryCredentialsAttributesA(&cred_handle, SECPKG_ATTR_SUPPORTED_PROTOCOLS, &prots);
 235             if(res != SEC_E_OK || (prots.grbitProtocol & SP_PROT_TLS1_1PLUS_CLIENT)) {
 236                 cred.grbitEnabledProtocols = prots.grbitProtocol & ~SP_PROT_TLS1_1PLUS_CLIENT;
 237                 res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
 238                        NULL, NULL, &compat_cred_handle, NULL);
 239                 have_compat_cred_handle = res == SEC_E_OK;
 240             }
 241         }
 242
 243         cred_handle_initialized = res == SEC_E_OK;
 244     }
 245
 246     LeaveCriticalSection(&init_sechandle_cs);
 247
 248     if(res != SEC_E_OK) {
 249         WARN("Failed: %08x\n", res);
 250         return FALSE;
 251     }
 252
 253     return TRUE;
 254 }
 255
 256 static DWORD create_netconn_socket(server_t *server, netconn_t *netconn, DWORD timeout)
 257 {
 258     int result;
 259     ULONG flag;
 260
 261     assert(server->addr_len);
 262     result = netconn->socket = socket(server->addr.ss_family, SOCK_STREAM, 0);
 263     if(result != -1) {
 264         flag = 1;
 265         ioctlsocket(netconn->socket, FIONBIO, &flag);
 266         result = connect(netconn->socket, (struct sockaddr*)&server->addr, server->addr_len);
 267         if(result == -1)
 268         {
 269             if (sock_get_error(errno) == WSAEINPROGRESS) {
 270                 // ReactOS: use select instead of poll
 271                 fd_set outfd;
 272                 struct timeval tv;
 273                 int res;
 274
 275                 FD_ZERO(&outfd);
 276                 FD_SET(netconn->socket, &outfd);
 277                 tv.tv_sec = timeout / 1000;
 278                 tv.tv_usec = (timeout % 1000) * 1000;
 279                 res = select(0, NULL, &outfd, NULL, &tv);
 280                 if (!res)
 281                 {
 282                     closesocket(netconn->socket);
 283                     return ERROR_INTERNET_CANNOT_CONNECT;
 284                 }
 285                 else if (res > 0)
 286                 {
 287                     int err;
 288                     socklen_t len = sizeof(err);
 289                     if (!getsockopt(netconn->socket, SOL_SOCKET, SO_ERROR, (void *)&err, &len) && !err)
 290                         result = 0;
 291                 }
 292             }
 293         }
 294         if(result == -1)
 295         {
 296             closesocket(netconn->socket);
 297             netconn->socket = -1;
 298         }
 299         else {
 300             flag = 0;
 301             ioctlsocket(netconn->socket, FIONBIO, &flag);
 302         }
 303     }
 304     if(result == -1)
 305         return ERROR_INTERNET_CANNOT_CONNECT;
 306
 307 #ifdef TCP_NODELAY
 308     flag = 1;
 309     result = setsockopt(netconn->socket, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag));
 310     if(result < 0)
 311         WARN("setsockopt(TCP_NODELAY) failed\n");
 312 #endif
 313
 314     return ERROR_SUCCESS;
 315 }
 316
 317 DWORD create_netconn(BOOL useSSL, server_t *server, DWORD security_flags, BOOL mask_errors, DWORD timeout, netconn_t **ret)
 318 {
 319     netconn_t *netconn;
 320     int result;
 321
 322     netconn = heap_alloc_zero(sizeof(*netconn));
 323     if(!netconn)
 324         return ERROR_OUTOFMEMORY;
 325
 326     netconn->socket = -1;
 327     netconn->security_flags = security_flags | server->security_flags;
 328     netconn->mask_errors = mask_errors;
 329     list_init(&netconn->pool_entry);
 330     SecInvalidateHandle(&netconn->ssl_ctx);
 331
 332     result = create_netconn_socket(server, netconn, timeout);
 333     if (result != ERROR_SUCCESS) {
 334         heap_free(netconn);
 335         return result;
 336     }
 337
 338     server_addref(server);
 339     netconn->server = server;
 340     *ret = netconn;
 341     return result;
 342 }
 343
 344 BOOL is_valid_netconn(netconn_t *netconn)
 345 {
 346     return netconn && netconn->socket != -1;
 347 }
 348
 349 void close_netconn(netconn_t *netconn)
 350 {
 351     closesocket(netconn->socket);
 352     netconn->socket = -1;
 353 }
 354
 355 void free_netconn(netconn_t *netconn)
 356 {
 357     server_release(netconn->server);
 358
 359     if (netconn->secure) {
 360         heap_free(netconn->peek_msg_mem);
 361         netconn->peek_msg_mem = NULL;
 362         netconn->peek_msg = NULL;
 363         netconn->peek_len = 0;
 364         heap_free(netconn->ssl_buf);
 365         netconn->ssl_buf = NULL;
 366         heap_free(netconn->extra_buf);
 367         netconn->extra_buf = NULL;
 368         netconn->extra_len = 0;
 369         if (SecIsValidHandle(&netconn->ssl_ctx))
 370             DeleteSecurityContext(&netconn->ssl_ctx);
 371     }
 372
 373     heap_free(netconn);
 374 }
 375
 376 void NETCON_unload(void)
 377 {
 378     if(cred_handle_initialized)
 379         FreeCredentialsHandle(&cred_handle);
 380     if(have_compat_cred_handle)
 381         FreeCredentialsHandle(&compat_cred_handle);
 382     DeleteCriticalSection(&init_sechandle_cs);
 383 }
 384
 385 #ifndef __REACTOS__
 386 /* translate a unix error code into a winsock one */
 387 int sock_get_error( int err )
 388 {
 389 #if !defined(__MINGW32__) && !defined (_MSC_VER)
 390     switch (err)
 391     {
 392         case EINTR:             return WSAEINTR;
 393         case EBADF:             return WSAEBADF;
 394         case EPERM:
 395         case EACCES:            return WSAEACCES;
 396         case EFAULT:            return WSAEFAULT;
 397         case EINVAL:            return WSAEINVAL;
 398         case EMFILE:            return WSAEMFILE;
 399         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 400         case EINPROGRESS:       return WSAEINPROGRESS;
 401         case EALREADY:          return WSAEALREADY;
 402         case ENOTSOCK:          return WSAENOTSOCK;
 403         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 404         case EMSGSIZE:          return WSAEMSGSIZE;
 405         case EPROTOTYPE:        return WSAEPROTOTYPE;
 406         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 407         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 408         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 409         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 410         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 411         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 412         case EADDRINUSE:        return WSAEADDRINUSE;
 413         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 414         case ENETDOWN:          return WSAENETDOWN;
 415         case ENETUNREACH:       return WSAENETUNREACH;
 416         case ENETRESET:         return WSAENETRESET;
 417         case ECONNABORTED:      return WSAECONNABORTED;
 418         case EPIPE:
 419         case ECONNRESET:        return WSAECONNRESET;
 420         case ENOBUFS:           return WSAENOBUFS;
 421         case EISCONN:           return WSAEISCONN;
 422         case ENOTCONN:          return WSAENOTCONN;
 423         case ESHUTDOWN:         return WSAESHUTDOWN;
 424         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 425         case ETIMEDOUT:         return WSAETIMEDOUT;
 426         case ECONNREFUSED:      return WSAECONNREFUSED;
 427         case ELOOP:             return WSAELOOP;
 428         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 429         case EHOSTDOWN:         return WSAEHOSTDOWN;
 430         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 431         case ENOTEMPTY:         return WSAENOTEMPTY;
 432 #ifdef EPROCLIM
 433         case EPROCLIM:          return WSAEPROCLIM;
 434 #endif
 435 #ifdef EUSERS
 436         case EUSERS:            return WSAEUSERS;
 437 #endif
 438 #ifdef EDQUOT
 439         case EDQUOT:            return WSAEDQUOT;
 440 #endif
 441 #ifdef ESTALE
 442         case ESTALE:            return WSAESTALE;
 443 #endif
 444 #ifdef EREMOTE
 445         case EREMOTE:           return WSAEREMOTE;
 446 #endif
 447     default: errno=err; perror("sock_set_error"); return WSAEFAULT;
 448     }
 449 #endif
 450     return err;
 451 }
 452 #endif
 453
 454 static void set_socket_blocking(int socket, blocking_mode_t mode)
 455 {
 456 #if defined(__MINGW32__) || defined (_MSC_VER)
 457     ULONG arg = mode == BLOCKING_DISALLOW;
 458     ioctlsocket(socket, FIONBIO, &arg);
 459 #endif
 460 }
 461
 462 static DWORD netcon_secure_connect_setup(netconn_t *connection, BOOL compat_mode)
 463 {
 464     SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
 465     SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
 466     SecHandle *cred = &cred_handle;
 467     BYTE *read_buf;
 468     SIZE_T read_buf_size = 2048;
 469     ULONG attrs = 0;
 470     CtxtHandle ctx;
 471     SSIZE_T size;
 472     int bits;
 473     const CERT_CONTEXT *cert;
 474     SECURITY_STATUS status;
 475     DWORD res = ERROR_SUCCESS;
 476
 477     const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
 478         |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
 479
 480     if(!ensure_cred_handle())
 481         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 482
 483     if(compat_mode) {
 484         if(!have_compat_cred_handle)
 485             return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 486         cred = &compat_cred_handle;
 487     }
 488
 489     read_buf = heap_alloc(read_buf_size);
 490     if(!read_buf)
 491         return ERROR_OUTOFMEMORY;
 492
 493     status = InitializeSecurityContextW(cred, NULL, connection->server->name, isc_req_flags, 0, 0, NULL, 0,
 494             &ctx, &out_desc, &attrs, NULL);
 495
 496     assert(status != SEC_E_OK);
 497
 498     while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
 499         if(out_buf.cbBuffer) {
 500             assert(status == SEC_I_CONTINUE_NEEDED);
 501
 502             TRACE("sending %u bytes\n", out_buf.cbBuffer);
 503
 504             size = send(connection->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
 505             if(size != out_buf.cbBuffer) {
 506                 ERR("send failed\n");
 507                 status = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 508                 break;
 509             }
 510
 511             FreeContextBuffer(out_buf.pvBuffer);
 512             out_buf.pvBuffer = NULL;
 513             out_buf.cbBuffer = 0;
 514         }
 515
 516         if(status == SEC_I_CONTINUE_NEEDED) {
 517             assert(in_bufs[1].cbBuffer < read_buf_size);
 518
 519             memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
 520             in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
 521
 522             in_bufs[1].BufferType = SECBUFFER_EMPTY;
 523             in_bufs[1].cbBuffer = 0;
 524             in_bufs[1].pvBuffer = NULL;
 525         }
 526
 527         assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
 528         assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
 529
 530         if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
 531             BYTE *new_read_buf;
 532
 533             new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
 534             if(!new_read_buf) {
 535                 status = E_OUTOFMEMORY;
 536                 break;
 537             }
 538
 539             in_bufs[0].pvBuffer = read_buf = new_read_buf;
 540             read_buf_size += 1024;
 541         }
 542
 543         size = recv(connection->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
 544         if(size < 1) {
 545             WARN("recv error\n");
 546             res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 547             break;
 548         }
 549
 550         TRACE("recv %lu bytes\n", size);
 551
 552         in_bufs[0].cbBuffer += size;
 553         in_bufs[0].pvBuffer = read_buf;
 554         status = InitializeSecurityContextW(cred, &ctx, connection->server->name,  isc_req_flags, 0, 0, &in_desc,
 555                 0, NULL, &out_desc, &attrs, NULL);
 556         TRACE("InitializeSecurityContext ret %08x\n", status);
 557
 558         if(status == SEC_E_OK) {
 559             if(SecIsValidHandle(&connection->ssl_ctx))
 560                 DeleteSecurityContext(&connection->ssl_ctx);
 561             connection->ssl_ctx = ctx;
 562
 563             if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
 564                 FIXME("SECBUFFER_EXTRA not supported\n");
 565
 566             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &connection->ssl_sizes);
 567             if(status != SEC_E_OK) {
 568                 WARN("Could not get sizes\n");
 569                 break;
 570             }
 571
 572             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
 573             if(status == SEC_E_OK) {
 574                 res = netconn_verify_cert(connection, cert, cert->hCertStore);
 575                 CertFreeCertificateContext(cert);
 576                 if(res != ERROR_SUCCESS) {
 577                     WARN("cert verify failed: %u\n", res);
 578                     break;
 579                 }
 580             }else {
 581                 WARN("Could not get cert\n");
 582                 break;
 583             }
 584
 585             connection->ssl_buf = heap_alloc(connection->ssl_sizes.cbHeader + connection->ssl_sizes.cbMaximumMessage
 586                     + connection->ssl_sizes.cbTrailer);
 587             if(!connection->ssl_buf) {
 588                 res = GetLastError();
 589                 break;
 590             }
 591         }
 592     }
 593
 594     if(status != SEC_E_OK || res != ERROR_SUCCESS) {
 595         WARN("Failed to establish SSL connection: %08x (%u)\n", status, res);
 596         heap_free(connection->ssl_buf);
 597         connection->ssl_buf = NULL;
 598         return res ? res : ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 599     }
 600
 601     TRACE("established SSL connection\n");
 602     connection->secure = TRUE;
 603     connection->security_flags |= SECURITY_FLAG_SECURE;
 604
 605     bits = NETCON_GetCipherStrength(connection);
 606     if (bits >= 128)
 607         connection->security_flags |= SECURITY_FLAG_STRENGTH_STRONG;
 608     else if (bits >= 56)
 609         connection->security_flags |= SECURITY_FLAG_STRENGTH_MEDIUM;
 610     else
 611         connection->security_flags |= SECURITY_FLAG_STRENGTH_WEAK;
 612
 613     if(connection->mask_errors)
 614         connection->server->security_flags = connection->security_flags;
 615     return ERROR_SUCCESS;
 616 }
 617
 618 /******************************************************************************
 619  * NETCON_secure_connect
 620  * Initiates a secure connection over an existing plaintext connection.
 621  */
 622 DWORD NETCON_secure_connect(netconn_t *connection, server_t *server)
 623 {
 624     DWORD res;
 625
 626     /* can't connect if we are already connected */
 627     if(connection->secure) {
 628         ERR("already connected\n");
 629         return ERROR_INTERNET_CANNOT_CONNECT;
 630     }
 631
 632     if(server != connection->server) {
 633         server_release(connection->server);
 634         server_addref(server);
 635         connection->server = server;
 636     }
 637
 638     /* connect with given TLS options */
 639     res = netcon_secure_connect_setup(connection, FALSE);
 640     if (res == ERROR_SUCCESS)
 641         return res;
 642
 643     /* FIXME: when got version alert and FIN from server */
 644     /* fallback to connect without TLSv1.1/TLSv1.2        */
 645     if (res == ERROR_INTERNET_SECURITY_CHANNEL_ERROR && have_compat_cred_handle)
 646     {
 647         closesocket(connection->socket);
 648         res = create_netconn_socket(connection->server, connection, 500);
 649         if (res != ERROR_SUCCESS)
 650             return res;
 651         res = netcon_secure_connect_setup(connection, TRUE);
 652     }
 653     return res;
 654 }
 655
 656 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
 657 {
 658     SecBuffer bufs[4] = {
 659         {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
 660         {size,  SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
 661         {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
 662         {0, SECBUFFER_EMPTY, NULL}
 663     };
 664     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 665     SECURITY_STATUS res;
 666
 667     memcpy(bufs[1].pvBuffer, msg, size);
 668     res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
 669     if(res != SEC_E_OK) {
 670         WARN("EncryptMessage failed\n");
 671         return FALSE;
 672     }
 673
 674     if(send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
 675         WARN("send failed\n");
 676         return FALSE;
 677     }
 678
 679     return TRUE;
 680 }
 681
 682 /******************************************************************************
 683  * NETCON_send
 684  * Basically calls 'send()' unless we should use SSL
 685  * number of chars send is put in *sent
 686  */
 687 DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags,
 688                 int *sent /* out */)
 689 {
 690     if(!connection->secure)
 691     {
 692         *sent = send(connection->socket, msg, len, flags);
 693         if (*sent == -1)
 694             return sock_get_error(errno);
 695         return ERROR_SUCCESS;
 696     }
 697     else
 698     {
 699         const BYTE *ptr = msg;
 700         size_t chunk_size;
 701
 702         *sent = 0;
 703
 704         while(len) {
 705             chunk_size = min(len, connection->ssl_sizes.cbMaximumMessage);
 706             if(!send_ssl_chunk(connection, ptr, chunk_size))
 707                 return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 708
 709             *sent += chunk_size;
 710             ptr += chunk_size;
 711             len -= chunk_size;
 712         }
 713
 714         return ERROR_SUCCESS;
 715     }
 716 }
 717
 718 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, blocking_mode_t mode, SIZE_T *ret_size, BOOL *eof)
 719 {
 720     const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
 721     SecBuffer bufs[4];
 722     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 723     SSIZE_T size, buf_len = 0;
 724     blocking_mode_t tmp_mode;
 725     int i;
 726     SECURITY_STATUS res;
 727
 728     assert(conn->extra_len < ssl_buf_size);
 729
 730     /* BLOCKING_WAITALL is handled by caller */
 731     if(mode == BLOCKING_WAITALL)
 732         mode = BLOCKING_ALLOW;
 733
 734     if(conn->extra_len) {
 735         memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
 736         buf_len = conn->extra_len;
 737         conn->extra_len = 0;
 738         heap_free(conn->extra_buf);
 739         conn->extra_buf = NULL;
 740     }
 741
 742     tmp_mode = buf_len ? BLOCKING_DISALLOW : mode;
 743     set_socket_blocking(conn->socket, tmp_mode);
 744     size = recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, tmp_mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT);
 745     if(size < 0) {
 746         if(!buf_len) {
 747             if(errno == EAGAIN || errno == EWOULDBLOCK) {
 748                 TRACE("would block\n");
 749                 return WSAEWOULDBLOCK;
 750             }
 751             WARN("recv failed\n");
 752             return ERROR_INTERNET_CONNECTION_ABORTED;
 753         }
 754     }else {
 755         buf_len += size;
 756     }
 757
 758     *ret_size = buf_len;
 759
 760     if(!buf_len) {
 761         *eof = TRUE;
 762         return ERROR_SUCCESS;
 763     }
 764
 765     *eof = FALSE;
 766
 767     do {
 768         memset(bufs, 0, sizeof(bufs));
 769         bufs[0].BufferType = SECBUFFER_DATA;
 770         bufs[0].cbBuffer = buf_len;
 771         bufs[0].pvBuffer = conn->ssl_buf;
 772
 773         res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
 774         switch(res) {
 775         case SEC_E_OK:
 776             break;
 777         case SEC_I_CONTEXT_EXPIRED:
 778             TRACE("context expired\n");
 779             *eof = TRUE;
 780             return ERROR_SUCCESS;
 781         case SEC_E_INCOMPLETE_MESSAGE:
 782             assert(buf_len < ssl_buf_size);
 783
 784             set_socket_blocking(conn->socket, mode);
 785             size = recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT);
 786             if(size < 1) {
 787                 if(size < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) {
 788                     TRACE("would block\n");
 789
 790                     /* FIXME: Optimize extra_buf usage. */
 791                     conn->extra_buf = heap_alloc(buf_len);
 792                     if(!conn->extra_buf)
 793                         return ERROR_NOT_ENOUGH_MEMORY;
 794
 795                     conn->extra_len = buf_len;
 796                     memcpy(conn->extra_buf, conn->ssl_buf, conn->extra_len);
 797                     return WSAEWOULDBLOCK;
 798                 }
 799
 800                 return ERROR_INTERNET_CONNECTION_ABORTED;
 801             }
 802
 803             buf_len += size;
 804             continue;
 805         default:
 806             WARN("failed: %08x\n", res);
 807             return ERROR_INTERNET_CONNECTION_ABORTED;
 808         }
 809     } while(res != SEC_E_OK);
 810
 811     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 812         if(bufs[i].BufferType == SECBUFFER_DATA) {
 813             size = min(buf_size, bufs[i].cbBuffer);
 814             memcpy(buf, bufs[i].pvBuffer, size);
 815             if(size < bufs[i].cbBuffer) {
 816                 assert(!conn->peek_len);
 817                 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
 818                 if(!conn->peek_msg)
 819                     return ERROR_NOT_ENOUGH_MEMORY;
 820                 conn->peek_len = bufs[i].cbBuffer-size;
 821                 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
 822             }
 823
 824             *ret_size = size;
 825         }
 826     }
 827
 828     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 829         if(bufs[i].BufferType == SECBUFFER_EXTRA) {
 830             conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
 831             if(!conn->extra_buf)
 832                 return ERROR_NOT_ENOUGH_MEMORY;
 833
 834             conn->extra_len = bufs[i].cbBuffer;
 835             memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
 836         }
 837     }
 838
 839     return ERROR_SUCCESS;
 840 }
 841
 842 /******************************************************************************
 843  * NETCON_recv
 844  * Basically calls 'recv()' unless we should use SSL
 845  * number of chars received is put in *recvd
 846  */
 847 DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, blocking_mode_t mode, int *recvd)
 848 {
 849     *recvd = 0;
 850     if (!len)
 851         return ERROR_SUCCESS;
 852
 853     if (!connection->secure)
 854     {
 855         int flags = 0;
 856
 857         switch(mode) {
 858         case BLOCKING_ALLOW:
 859             break;
 860         case BLOCKING_DISALLOW:
 861             flags = WINE_MSG_DONTWAIT;
 862             break;
 863         case BLOCKING_WAITALL:
 864             flags = MSG_WAITALL;
 865             break;
 866         }
 867
 868         set_socket_blocking(connection->socket, mode);
 869         *recvd = recv(connection->socket, buf, len, flags);
 870         return *recvd == -1 ? sock_get_error(errno) :  ERROR_SUCCESS;
 871     }
 872     else
 873     {
 874         SIZE_T size = 0, cread;
 875         BOOL eof;
 876         DWORD res;
 877
 878         if(connection->peek_msg) {
 879             size = min(len, connection->peek_len);
 880             memcpy(buf, connection->peek_msg, size);
 881             connection->peek_len -= size;
 882             connection->peek_msg += size;
 883
 884             if(!connection->peek_len) {
 885                 heap_free(connection->peek_msg_mem);
 886                 connection->peek_msg_mem = connection->peek_msg = NULL;
 887             }
 888             /* check if we have enough data from the peek buffer */
 889             if(mode != BLOCKING_WAITALL || size == len) {
 890                 *recvd = size;
 891                 return ERROR_SUCCESS;
 892             }
 893
 894             mode = BLOCKING_DISALLOW;
 895         }
 896
 897         do {
 898             res = read_ssl_chunk(connection, (BYTE*)buf+size, len-size, mode, &cread, &eof);
 899             if(res != ERROR_SUCCESS) {
 900                 if(res == WSAEWOULDBLOCK) {
 901                     if(size)
 902                         res = ERROR_SUCCESS;
 903                 }else {
 904                     WARN("read_ssl_chunk failed\n");
 905                 }
 906                 break;
 907             }
 908
 909             if(eof) {
 910                 TRACE("EOF\n");
 911                 break;
 912             }
 913
 914             size += cread;
 915         }while(!size || (mode == BLOCKING_WAITALL && size < len));
 916
 917         TRACE("received %ld bytes\n", size);
 918         *recvd = size;
 919         return res;
 920     }
 921 }
 922
 923 /******************************************************************************
 924  * NETCON_query_data_available
 925  * Returns the number of bytes of peeked data plus the number of bytes of
 926  * queued, but unread data.
 927  */
 928 BOOL NETCON_query_data_available(netconn_t *connection, DWORD *available)
 929 {
 930     *available = 0;
 931
 932     if(!connection->secure)
 933     {
 934 #ifdef FIONREAD
 935         ULONG unread;
 936         int retval = ioctlsocket(connection->socket, FIONREAD, &unread);
 937         if (!retval)
 938         {
 939             TRACE("%d bytes of queued, but unread data\n", unread);
 940             *available += unread;
 941         }
 942 #endif
 943     }
 944     else
 945     {
 946         *available = connection->peek_len;
 947     }
 948     return TRUE;
 949 }
 950
 951 BOOL NETCON_is_alive(netconn_t *netconn)
 952 {
 953 #ifdef MSG_DONTWAIT
 954     ssize_t len;
 955     BYTE b;
 956
 957     len = recv(netconn->socket, &b, 1, MSG_PEEK|MSG_DONTWAIT);
 958     return len == 1 || (len == -1 && errno == EWOULDBLOCK);
 959 #elif defined(__MINGW32__) || defined(_MSC_VER)
 960     ULONG mode;
 961     int len;
 962     char b;
 963
 964     mode = 1;
 965     if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
 966         return FALSE;
 967
 968     len = recv(netconn->socket, &b, 1, MSG_PEEK);
 969
 970     mode = 0;
 971     if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
 972         return FALSE;
 973
 974     return len == 1 || (len == -1 && errno == WSAEWOULDBLOCK);
 975 #else
 976     FIXME("not supported on this platform\n");
 977     return TRUE;
 978 #endif
 979 }
 980
 981 LPCVOID NETCON_GetCert(netconn_t *connection)
 982 {
 983     const CERT_CONTEXT *ret;
 984     SECURITY_STATUS res;
 985
 986     res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
 987     return res == SEC_E_OK ? ret : NULL;
 988 }
 989
 990 int NETCON_GetCipherStrength(netconn_t *connection)
 991 {
 992     SecPkgContext_ConnectionInfo conn_info;
 993     SECURITY_STATUS res;
 994
 995     if (!connection->secure)
 996         return 0;
 997
 998     res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
 999     if(res != SEC_E_OK)
1000         WARN("QueryContextAttributesW failed: %08x\n", res);
1001     return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
1002 }
1003
1004 DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value)
1005 {
1006     int result;
1007     struct timeval tv;
1008
1009     /* value is in milliseconds, convert to struct timeval */
1010     if (value == INFINITE)
1011     {
1012         tv.tv_sec = 0;
1013         tv.tv_usec = 0;
1014     }
1015     else
1016     {
1017         tv.tv_sec = value / 1000;
1018         tv.tv_usec = (value % 1000) * 1000;
1019     }
1020     result = setsockopt(connection->socket, SOL_SOCKET,
1021                         send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
1022                         sizeof(tv));
1023     if (result == -1)
1024     {
1025         WARN("setsockopt failed (%s)\n", strerror(errno));
1026         return sock_get_error(errno);
1027     }
1028     return ERROR_SUCCESS;
1029 }