dlls/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 "config.h"
  25 #include "wine/port.h"
  26
  27 #define NONAMELESSUNION
  28
  29 #if defined(__MINGW32__) || defined (_MSC_VER)
  30 #include <ws2tcpip.h>
  31 #endif
  32
  33 #include <sys/types.h>
  34 #ifdef HAVE_POLL_H
  35 #include <poll.h>
  36 #endif
  37 #ifdef HAVE_SYS_POLL_H
  38 # include <sys/poll.h>
  39 #endif
  40 #ifdef HAVE_SYS_TIME_H
  41 # include <sys/time.h>
  42 #endif
  43 #ifdef HAVE_SYS_SOCKET_H
  44 # include <sys/socket.h>
  45 #endif
  46 #ifdef HAVE_SYS_FILIO_H
  47 # include <sys/filio.h>
  48 #endif
  49 #ifdef HAVE_UNISTD_H
  50 # include <unistd.h>
  51 #endif
  52 #ifdef HAVE_SYS_IOCTL_H
  53 # include <sys/ioctl.h>
  54 #endif
  55 #include <time.h>
  56 #ifdef HAVE_NETDB_H
  57 # include <netdb.h>
  58 #endif
  59 #ifdef HAVE_NETINET_IN_H
  60 # include <netinet/in.h>
  61 #endif
  62 #ifdef HAVE_NETINET_TCP_H
  63 # include <netinet/tcp.h>
  64 #endif
  65
  66 #include <stdarg.h>
  67 #include <stdlib.h>
  68 #include <string.h>
  69 #include <stdio.h>
  70 #include <errno.h>
  71 #include <assert.h>
  72
  73 #include "wine/library.h"
  74 #include "windef.h"
  75 #include "winbase.h"
  76 #include "wininet.h"
  77 #include "winerror.h"
  78
  79 #include "wine/debug.h"
  80 #include "internet.h"
  81
  82 /* To avoid conflicts with the Unix socket headers. we only need it for
  83  * the error codes anyway. */
  84 #define USE_WS_PREFIX
  85 #include "winsock2.h"
  86
  87 #define RESPONSE_TIMEOUT        30            /* FROM internet.c */
  88
  89
  90 WINE_DEFAULT_DEBUG_CHANNEL(wininet);
  91
  92 /* FIXME!!!!!!
  93  *    This should use winsock - To use winsock the functions will have to change a bit
  94  *        as they are designed for unix sockets.
  95  */
  96
  97 static DWORD netconn_verify_cert(netconn_t *conn, PCCERT_CONTEXT cert, HCERTSTORE store)
  98 {
  99     BOOL ret;
 100     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
 101     PCCERT_CHAIN_CONTEXT chain;
 102     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
 103     char *server_auth[] = { oid_server_auth };
 104     DWORD err = ERROR_SUCCESS, errors;
 105
 106     static const DWORD supportedErrors =
 107         CERT_TRUST_IS_NOT_TIME_VALID |
 108         CERT_TRUST_IS_UNTRUSTED_ROOT |
 109         CERT_TRUST_IS_PARTIAL_CHAIN |
 110         CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 111
 112     TRACE("verifying %s\n", debugstr_w(conn->server->name));
 113
 114     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
 115     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
 116     if (!(ret = CertGetCertificateChain(NULL, cert, NULL, store, &chainPara, 0, NULL, &chain))) {
 117         TRACE("failed\n");
 118         return GetLastError();
 119     }
 120
 121     errors = chain->TrustStatus.dwErrorStatus;
 122
 123     do {
 124         /* This seems strange, but that's what tests show */
 125         if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
 126             WARN("ERROR_INTERNET_SEC_CERT_REV_FAILED\n");
 127             err = ERROR_INTERNET_SEC_CERT_REV_FAILED;
 128             if(conn->mask_errors)
 129                 conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED;
 130             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
 131                 break;
 132         }
 133
 134         if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) {
 135             WARN("error status %x\n", chain->TrustStatus.dwErrorStatus & ~supportedErrors);
 136             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 137             errors &= supportedErrors;
 138             if(!conn->mask_errors)
 139                 break;
 140             WARN("unknown error flags\n");
 141         }
 142
 143         if(errors & CERT_TRUST_IS_NOT_TIME_VALID) {
 144             WARN("CERT_TRUST_IS_NOT_TIME_VALID\n");
 145             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID)) {
 146                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_DATE_INVALID;
 147                 if(!conn->mask_errors)
 148                     break;
 149                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_DATE;
 150             }
 151             errors &= ~CERT_TRUST_IS_NOT_TIME_VALID;
 152         }
 153
 154         if(errors & CERT_TRUST_IS_UNTRUSTED_ROOT) {
 155             WARN("CERT_TRUST_IS_UNTRUSTED_ROOT\n");
 156             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 157                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 158                 if(!conn->mask_errors)
 159                     break;
 160                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 161             }
 162             errors &= ~CERT_TRUST_IS_UNTRUSTED_ROOT;
 163         }
 164
 165         if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
 166             WARN("CERT_TRUST_IS_PARTIAL_CHAIN\n");
 167             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 168                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 169                 if(!conn->mask_errors)
 170                     break;
 171                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 172             }
 173             errors &= ~CERT_TRUST_IS_PARTIAL_CHAIN;
 174         }
 175
 176         if(errors & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) {
 177             WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE\n");
 178             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_WRONG_USAGE)) {
 179                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 180                 if(!conn->mask_errors)
 181                     break;
 182                 WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE, unknown error flags\n");
 183             }
 184             errors &= ~CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 185         }
 186
 187         if(err == ERROR_INTERNET_SEC_CERT_REV_FAILED) {
 188             assert(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION);
 189             err = ERROR_SUCCESS;
 190         }
 191     }while(0);
 192
 193     if(!err || conn->mask_errors) {
 194         CERT_CHAIN_POLICY_PARA policyPara;
 195         SSL_EXTRA_CERT_CHAIN_POLICY_PARA sslExtraPolicyPara;
 196         CERT_CHAIN_POLICY_STATUS policyStatus;
 197         CERT_CHAIN_CONTEXT chainCopy;
 198
 199         /* Clear chain->TrustStatus.dwErrorStatus so
 200          * CertVerifyCertificateChainPolicy will verify additional checks
 201          * rather than stopping with an existing, ignored error.
 202          */
 203         memcpy(&chainCopy, chain, sizeof(chainCopy));
 204         chainCopy.TrustStatus.dwErrorStatus = 0;
 205         sslExtraPolicyPara.u.cbSize = sizeof(sslExtraPolicyPara);
 206         sslExtraPolicyPara.dwAuthType = AUTHTYPE_SERVER;
 207         sslExtraPolicyPara.pwszServerName = conn->server->name;
 208         sslExtraPolicyPara.fdwChecks = conn->security_flags;
 209         policyPara.cbSize = sizeof(policyPara);
 210         policyPara.dwFlags = 0;
 211         policyPara.pvExtraPolicyPara = &sslExtraPolicyPara;
 212         ret = CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL,
 213                 &chainCopy, &policyPara, &policyStatus);
 214         /* Any error in the policy status indicates that the
 215          * policy couldn't be verified.
 216          */
 217         if(ret) {
 218             if(policyStatus.dwError == CERT_E_CN_NO_MATCH) {
 219                 WARN("CERT_E_CN_NO_MATCH\n");
 220                 if(conn->mask_errors)
 221                     conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CN;
 222                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_CN_INVALID;
 223             }else if(policyStatus.dwError) {
 224                 WARN("policyStatus.dwError %x\n", policyStatus.dwError);
 225                 if(conn->mask_errors)
 226                     WARN("unknown error flags for policy status %x\n", policyStatus.dwError);
 227                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 228             }
 229         }else {
 230             err = GetLastError();
 231         }
 232     }
 233
 234     if(err) {
 235         WARN("failed %u\n", err);
 236         CertFreeCertificateChain(chain);
 237         if(conn->server->cert_chain) {
 238             CertFreeCertificateChain(conn->server->cert_chain);
 239             conn->server->cert_chain = NULL;
 240         }
 241         if(conn->mask_errors)
 242             conn->server->security_flags |= conn->security_flags & _SECURITY_ERROR_FLAGS_MASK;
 243         return err;
 244     }
 245
 246     /* FIXME: Reuse cached chain */
 247     if(conn->server->cert_chain)
 248         CertFreeCertificateChain(chain);
 249     else
 250         conn->server->cert_chain = chain;
 251     return ERROR_SUCCESS;
 252 }
 253
 254 static SecHandle cred_handle, compat_cred_handle;
 255 static BOOL cred_handle_initialized, have_compat_cred_handle;
 256
 257 static CRITICAL_SECTION init_sechandle_cs;
 258 static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = {
 259     0, 0, &init_sechandle_cs,
 260     { &init_sechandle_cs_debug.ProcessLocksList,
 261       &init_sechandle_cs_debug.ProcessLocksList },
 262     0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") }
 263 };
 264 static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 };
 265
 266 static BOOL ensure_cred_handle(void)
 267 {
 268     SECURITY_STATUS res = SEC_E_OK;
 269
 270     EnterCriticalSection(&init_sechandle_cs);
 271
 272     if(!cred_handle_initialized) {
 273         SCHANNEL_CRED cred = {SCHANNEL_CRED_VERSION};
 274         SecPkgCred_SupportedProtocols prots;
 275
 276         res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
 277                 NULL, NULL, &cred_handle, NULL);
 278         if(res == SEC_E_OK) {
 279             res = QueryCredentialsAttributesA(&cred_handle, SECPKG_ATTR_SUPPORTED_PROTOCOLS, &prots);
 280             if(res != SEC_E_OK || (prots.grbitProtocol & SP_PROT_TLS1_1PLUS_CLIENT)) {
 281                 cred.grbitEnabledProtocols = prots.grbitProtocol & ~SP_PROT_TLS1_1PLUS_CLIENT;
 282                 res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
 283                        NULL, NULL, &compat_cred_handle, NULL);
 284                 have_compat_cred_handle = res == SEC_E_OK;
 285             }
 286         }
 287
 288         cred_handle_initialized = res == SEC_E_OK;
 289     }
 290
 291     LeaveCriticalSection(&init_sechandle_cs);
 292
 293     if(res != SEC_E_OK) {
 294         WARN("Failed: %08x\n", res);
 295         return FALSE;
 296     }
 297
 298     return TRUE;
 299 }
 300
 301 static DWORD create_netconn_socket(server_t *server, netconn_t *netconn, DWORD timeout)
 302 {
 303     int result;
 304     ULONG flag;
 305
 306     assert(server->addr_len);
 307     result = netconn->socket = socket(server->addr.ss_family, SOCK_STREAM, 0);
 308     if(result != -1) {
 309         flag = 1;
 310         ioctlsocket(netconn->socket, FIONBIO, &flag);
 311         result = connect(netconn->socket, (struct sockaddr*)&server->addr, server->addr_len);
 312         if(result == -1)
 313         {
 314             if (sock_get_error(errno) == WSAEINPROGRESS) {
 315                 struct pollfd pfd;
 316                 int res;
 317
 318                 pfd.fd = netconn->socket;
 319                 pfd.events = POLLOUT;
 320                 res = poll(&pfd, 1, timeout);
 321                 if (!res)
 322                 {
 323                     closesocket(netconn->socket);
 324                     return ERROR_INTERNET_CANNOT_CONNECT;
 325                 }
 326                 else if (res > 0)
 327                 {
 328                     int err;
 329                     socklen_t len = sizeof(err);
 330                     if (!getsockopt(netconn->socket, SOL_SOCKET, SO_ERROR, (void *)&err, &len) && !err)
 331                         result = 0;
 332                 }
 333             }
 334         }
 335         if(result == -1)
 336             closesocket(netconn->socket);
 337         else {
 338             flag = 0;
 339             ioctlsocket(netconn->socket, FIONBIO, &flag);
 340         }
 341     }
 342     if(result == -1)
 343         return ERROR_INTERNET_CANNOT_CONNECT;
 344
 345 #ifdef TCP_NODELAY
 346     flag = 1;
 347     result = setsockopt(netconn->socket, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag));
 348     if(result < 0)
 349         WARN("setsockopt(TCP_NODELAY) failed\n");
 350 #endif
 351
 352     return ERROR_SUCCESS;
 353 }
 354
 355 DWORD create_netconn(BOOL useSSL, server_t *server, DWORD security_flags, BOOL mask_errors, DWORD timeout, netconn_t **ret)
 356 {
 357     netconn_t *netconn;
 358     int result;
 359
 360     netconn = heap_alloc_zero(sizeof(*netconn));
 361     if(!netconn)
 362         return ERROR_OUTOFMEMORY;
 363
 364     netconn->socket = -1;
 365     netconn->security_flags = security_flags | server->security_flags;
 366     netconn->mask_errors = mask_errors;
 367     list_init(&netconn->pool_entry);
 368
 369     result = create_netconn_socket(server, netconn, timeout);
 370     if (result != ERROR_SUCCESS) {
 371         heap_free(netconn);
 372         return result;
 373     }
 374
 375     server_addref(server);
 376     netconn->server = server;
 377     *ret = netconn;
 378     return result;
 379 }
 380
 381 void free_netconn(netconn_t *netconn)
 382 {
 383     server_release(netconn->server);
 384
 385     if (netconn->secure) {
 386         heap_free(netconn->peek_msg_mem);
 387         netconn->peek_msg_mem = NULL;
 388         netconn->peek_msg = NULL;
 389         netconn->peek_len = 0;
 390         heap_free(netconn->ssl_buf);
 391         netconn->ssl_buf = NULL;
 392         heap_free(netconn->extra_buf);
 393         netconn->extra_buf = NULL;
 394         netconn->extra_len = 0;
 395         DeleteSecurityContext(&netconn->ssl_ctx);
 396     }
 397
 398     closesocket(netconn->socket);
 399     heap_free(netconn);
 400 }
 401
 402 void NETCON_unload(void)
 403 {
 404     if(cred_handle_initialized)
 405         FreeCredentialsHandle(&cred_handle);
 406     if(have_compat_cred_handle)
 407         FreeCredentialsHandle(&compat_cred_handle);
 408     DeleteCriticalSection(&init_sechandle_cs);
 409 }
 410
 411 /* translate a unix error code into a winsock one */
 412 int sock_get_error( int err )
 413 {
 414 #if !defined(__MINGW32__) && !defined (_MSC_VER)
 415     switch (err)
 416     {
 417         case EINTR:             return WSAEINTR;
 418         case EBADF:             return WSAEBADF;
 419         case EPERM:
 420         case EACCES:            return WSAEACCES;
 421         case EFAULT:            return WSAEFAULT;
 422         case EINVAL:            return WSAEINVAL;
 423         case EMFILE:            return WSAEMFILE;
 424         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 425         case EINPROGRESS:       return WSAEINPROGRESS;
 426         case EALREADY:          return WSAEALREADY;
 427         case ENOTSOCK:          return WSAENOTSOCK;
 428         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 429         case EMSGSIZE:          return WSAEMSGSIZE;
 430         case EPROTOTYPE:        return WSAEPROTOTYPE;
 431         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 432         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 433         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 434         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 435         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 436         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 437         case EADDRINUSE:        return WSAEADDRINUSE;
 438         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 439         case ENETDOWN:          return WSAENETDOWN;
 440         case ENETUNREACH:       return WSAENETUNREACH;
 441         case ENETRESET:         return WSAENETRESET;
 442         case ECONNABORTED:      return WSAECONNABORTED;
 443         case EPIPE:
 444         case ECONNRESET:        return WSAECONNRESET;
 445         case ENOBUFS:           return WSAENOBUFS;
 446         case EISCONN:           return WSAEISCONN;
 447         case ENOTCONN:          return WSAENOTCONN;
 448         case ESHUTDOWN:         return WSAESHUTDOWN;
 449         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 450         case ETIMEDOUT:         return WSAETIMEDOUT;
 451         case ECONNREFUSED:      return WSAECONNREFUSED;
 452         case ELOOP:             return WSAELOOP;
 453         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 454         case EHOSTDOWN:         return WSAEHOSTDOWN;
 455         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 456         case ENOTEMPTY:         return WSAENOTEMPTY;
 457 #ifdef EPROCLIM
 458         case EPROCLIM:          return WSAEPROCLIM;
 459 #endif
 460 #ifdef EUSERS
 461         case EUSERS:            return WSAEUSERS;
 462 #endif
 463 #ifdef EDQUOT
 464         case EDQUOT:            return WSAEDQUOT;
 465 #endif
 466 #ifdef ESTALE
 467         case ESTALE:            return WSAESTALE;
 468 #endif
 469 #ifdef EREMOTE
 470         case EREMOTE:           return WSAEREMOTE;
 471 #endif
 472     default: errno=err; perror("sock_set_error"); return WSAEFAULT;
 473     }
 474 #endif
 475     return err;
 476 }
 477
 478 static DWORD netcon_secure_connect_setup(netconn_t *connection, BOOL compat_mode)
 479 {
 480     SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
 481     SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
 482     SecHandle *cred = &cred_handle;
 483     BYTE *read_buf;
 484     SIZE_T read_buf_size = 2048;
 485     ULONG attrs = 0;
 486     CtxtHandle ctx;
 487     SSIZE_T size;
 488     int bits;
 489     const CERT_CONTEXT *cert;
 490     SECURITY_STATUS status;
 491     DWORD res = ERROR_SUCCESS;
 492
 493     const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
 494         |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
 495
 496     if(!ensure_cred_handle())
 497         return FALSE;
 498
 499     if(compat_mode) {
 500         if(!have_compat_cred_handle)
 501             return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 502         cred = &compat_cred_handle;
 503     }
 504
 505     read_buf = heap_alloc(read_buf_size);
 506     if(!read_buf)
 507         return ERROR_OUTOFMEMORY;
 508
 509     status = InitializeSecurityContextW(cred, NULL, connection->server->name, isc_req_flags, 0, 0, NULL, 0,
 510             &ctx, &out_desc, &attrs, NULL);
 511
 512     assert(status != SEC_E_OK);
 513
 514     while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
 515         if(out_buf.cbBuffer) {
 516             assert(status == SEC_I_CONTINUE_NEEDED);
 517
 518             TRACE("sending %u bytes\n", out_buf.cbBuffer);
 519
 520             size = send(connection->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
 521             if(size != out_buf.cbBuffer) {
 522                 ERR("send failed\n");
 523                 status = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 524                 break;
 525             }
 526
 527             FreeContextBuffer(out_buf.pvBuffer);
 528             out_buf.pvBuffer = NULL;
 529             out_buf.cbBuffer = 0;
 530         }
 531
 532         if(status == SEC_I_CONTINUE_NEEDED) {
 533             assert(in_bufs[1].cbBuffer < read_buf_size);
 534
 535             memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
 536             in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
 537
 538             in_bufs[1].BufferType = SECBUFFER_EMPTY;
 539             in_bufs[1].cbBuffer = 0;
 540             in_bufs[1].pvBuffer = NULL;
 541         }
 542
 543         assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
 544         assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
 545
 546         if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
 547             BYTE *new_read_buf;
 548
 549             new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
 550             if(!new_read_buf) {
 551                 status = E_OUTOFMEMORY;
 552                 break;
 553             }
 554
 555             in_bufs[0].pvBuffer = read_buf = new_read_buf;
 556             read_buf_size += 1024;
 557         }
 558
 559         size = recv(connection->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
 560         if(size < 1) {
 561             WARN("recv error\n");
 562             res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 563             break;
 564         }
 565
 566         TRACE("recv %lu bytes\n", size);
 567
 568         in_bufs[0].cbBuffer += size;
 569         in_bufs[0].pvBuffer = read_buf;
 570         status = InitializeSecurityContextW(cred, &ctx, connection->server->name,  isc_req_flags, 0, 0, &in_desc,
 571                 0, NULL, &out_desc, &attrs, NULL);
 572         TRACE("InitializeSecurityContext ret %08x\n", status);
 573
 574         if(status == SEC_E_OK) {
 575             if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
 576                 FIXME("SECBUFFER_EXTRA not supported\n");
 577
 578             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &connection->ssl_sizes);
 579             if(status != SEC_E_OK) {
 580                 WARN("Could not get sizes\n");
 581                 break;
 582             }
 583
 584             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
 585             if(status == SEC_E_OK) {
 586                 res = netconn_verify_cert(connection, cert, cert->hCertStore);
 587                 CertFreeCertificateContext(cert);
 588                 if(res != ERROR_SUCCESS) {
 589                     WARN("cert verify failed: %u\n", res);
 590                     break;
 591                 }
 592             }else {
 593                 WARN("Could not get cert\n");
 594                 break;
 595             }
 596
 597             connection->ssl_buf = heap_alloc(connection->ssl_sizes.cbHeader + connection->ssl_sizes.cbMaximumMessage
 598                     + connection->ssl_sizes.cbTrailer);
 599             if(!connection->ssl_buf) {
 600                 res = GetLastError();
 601                 break;
 602             }
 603         }
 604     }
 605
 606
 607     if(status != SEC_E_OK || res != ERROR_SUCCESS) {
 608         WARN("Failed to initialize security context failed: %08x\n", status);
 609         heap_free(connection->ssl_buf);
 610         connection->ssl_buf = NULL;
 611         DeleteSecurityContext(&ctx);
 612         return res ? res : ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 613     }
 614
 615
 616     TRACE("established SSL connection\n");
 617     connection->ssl_ctx = ctx;
 618
 619     connection->secure = TRUE;
 620     connection->security_flags |= SECURITY_FLAG_SECURE;
 621
 622     bits = NETCON_GetCipherStrength(connection);
 623     if (bits >= 128)
 624         connection->security_flags |= SECURITY_FLAG_STRENGTH_STRONG;
 625     else if (bits >= 56)
 626         connection->security_flags |= SECURITY_FLAG_STRENGTH_MEDIUM;
 627     else
 628         connection->security_flags |= SECURITY_FLAG_STRENGTH_WEAK;
 629
 630     if(connection->mask_errors)
 631         connection->server->security_flags = connection->security_flags;
 632     return ERROR_SUCCESS;
 633 }
 634
 635 /******************************************************************************
 636  * NETCON_secure_connect
 637  * Initiates a secure connection over an existing plaintext connection.
 638  */
 639 DWORD NETCON_secure_connect(netconn_t *connection, server_t *server)
 640 {
 641     DWORD res;
 642
 643     /* can't connect if we are already connected */
 644     if(connection->secure) {
 645         ERR("already connected\n");
 646         return ERROR_INTERNET_CANNOT_CONNECT;
 647     }
 648
 649     if(server != connection->server) {
 650         server_release(connection->server);
 651         server_addref(server);
 652         connection->server = server;
 653     }
 654
 655     /* connect with given TLS options */
 656     res = netcon_secure_connect_setup(connection, FALSE);
 657     if (res == ERROR_SUCCESS)
 658         return res;
 659
 660     /* FIXME: when got version alert and FIN from server */
 661     /* fallback to connect without TLSv1.1/TLSv1.2        */
 662     if (res == ERROR_INTERNET_SECURITY_CHANNEL_ERROR && have_compat_cred_handle)
 663     {
 664         closesocket(connection->socket);
 665         res = create_netconn_socket(connection->server, connection, 500);
 666         if (res != ERROR_SUCCESS)
 667             return res;
 668         res = netcon_secure_connect_setup(connection, TRUE);
 669     }
 670     return res;
 671 }
 672
 673 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
 674 {
 675     SecBuffer bufs[4] = {
 676         {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
 677         {size,  SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
 678         {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
 679         {0, SECBUFFER_EMPTY, NULL}
 680     };
 681     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 682     SECURITY_STATUS res;
 683
 684     memcpy(bufs[1].pvBuffer, msg, size);
 685     res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
 686     if(res != SEC_E_OK) {
 687         WARN("EncryptMessage failed\n");
 688         return FALSE;
 689     }
 690
 691     if(send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
 692         WARN("send failed\n");
 693         return FALSE;
 694     }
 695
 696     return TRUE;
 697 }
 698
 699 /******************************************************************************
 700  * NETCON_send
 701  * Basically calls 'send()' unless we should use SSL
 702  * number of chars send is put in *sent
 703  */
 704 DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags,
 705                 int *sent /* out */)
 706 {
 707     if(!connection->secure)
 708     {
 709         *sent = send(connection->socket, msg, len, flags);
 710         if (*sent == -1)
 711             return sock_get_error(errno);
 712         return ERROR_SUCCESS;
 713     }
 714     else
 715     {
 716         const BYTE *ptr = msg;
 717         size_t chunk_size;
 718
 719         *sent = 0;
 720
 721         while(len) {
 722             chunk_size = min(len, connection->ssl_sizes.cbMaximumMessage);
 723             if(!send_ssl_chunk(connection, ptr, chunk_size))
 724                 return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 725
 726             *sent += chunk_size;
 727             ptr += chunk_size;
 728             len -= chunk_size;
 729         }
 730
 731         return ERROR_SUCCESS;
 732     }
 733 }
 734
 735 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *ret_size, BOOL *eof)
 736 {
 737     const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
 738     SecBuffer bufs[4];
 739     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 740     SSIZE_T size, buf_len;
 741     int i;
 742     SECURITY_STATUS res;
 743
 744     assert(conn->extra_len < ssl_buf_size);
 745
 746     if(conn->extra_len) {
 747         memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
 748         buf_len = conn->extra_len;
 749         conn->extra_len = 0;
 750         heap_free(conn->extra_buf);
 751         conn->extra_buf = NULL;
 752     }else {
 753         buf_len = recv(conn->socket, conn->ssl_buf+conn->extra_len, ssl_buf_size-conn->extra_len, 0);
 754         if(buf_len < 0) {
 755             WARN("recv failed\n");
 756             return FALSE;
 757         }
 758
 759         if(!buf_len) {
 760             *eof = TRUE;
 761             return TRUE;
 762         }
 763     }
 764
 765     *ret_size = 0;
 766     *eof = FALSE;
 767
 768     do {
 769         memset(bufs, 0, sizeof(bufs));
 770         bufs[0].BufferType = SECBUFFER_DATA;
 771         bufs[0].cbBuffer = buf_len;
 772         bufs[0].pvBuffer = conn->ssl_buf;
 773
 774         res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
 775         switch(res) {
 776         case SEC_E_OK:
 777             break;
 778         case SEC_I_CONTEXT_EXPIRED:
 779             TRACE("context expired\n");
 780             *eof = TRUE;
 781             return TRUE;
 782         case SEC_E_INCOMPLETE_MESSAGE:
 783             assert(buf_len < ssl_buf_size);
 784
 785             size = recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
 786             if(size < 1)
 787                 return FALSE;
 788
 789             buf_len += size;
 790             continue;
 791         default:
 792             WARN("failed: %08x\n", res);
 793             return FALSE;
 794         }
 795     } while(res != SEC_E_OK);
 796
 797     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 798         if(bufs[i].BufferType == SECBUFFER_DATA) {
 799             size = min(buf_size, bufs[i].cbBuffer);
 800             memcpy(buf, bufs[i].pvBuffer, size);
 801             if(size < bufs[i].cbBuffer) {
 802                 assert(!conn->peek_len);
 803                 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
 804                 if(!conn->peek_msg)
 805                     return FALSE;
 806                 conn->peek_len = bufs[i].cbBuffer-size;
 807                 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
 808             }
 809
 810             *ret_size = size;
 811         }
 812     }
 813
 814     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 815         if(bufs[i].BufferType == SECBUFFER_EXTRA) {
 816             conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
 817             if(!conn->extra_buf)
 818                 return FALSE;
 819
 820             conn->extra_len = bufs[i].cbBuffer;
 821             memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
 822         }
 823     }
 824
 825     return TRUE;
 826 }
 827
 828 /******************************************************************************
 829  * NETCON_recv
 830  * Basically calls 'recv()' unless we should use SSL
 831  * number of chars received is put in *recvd
 832  */
 833 DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, int flags, int *recvd)
 834 {
 835     *recvd = 0;
 836     if (!len)
 837         return ERROR_SUCCESS;
 838
 839     if (!connection->secure)
 840     {
 841         *recvd = recv(connection->socket, buf, len, flags);
 842         return *recvd == -1 ? sock_get_error(errno) :  ERROR_SUCCESS;
 843     }
 844     else
 845     {
 846         SIZE_T size = 0, cread;
 847         BOOL res, eof;
 848
 849         if(connection->peek_msg) {
 850             size = min(len, connection->peek_len);
 851             memcpy(buf, connection->peek_msg, size);
 852             connection->peek_len -= size;
 853             connection->peek_msg += size;
 854
 855             if(!connection->peek_len) {
 856                 heap_free(connection->peek_msg_mem);
 857                 connection->peek_msg_mem = connection->peek_msg = NULL;
 858             }
 859             /* check if we have enough data from the peek buffer */
 860             if(!(flags & MSG_WAITALL) || size == len) {
 861                 *recvd = size;
 862                 return ERROR_SUCCESS;
 863             }
 864         }
 865
 866         do {
 867             res = read_ssl_chunk(connection, (BYTE*)buf+size, len-size, &cread, &eof);
 868             if(!res) {
 869                 WARN("read_ssl_chunk failed\n");
 870                 if(!size)
 871                     return ERROR_INTERNET_CONNECTION_ABORTED;
 872                 break;
 873             }
 874
 875             if(eof) {
 876                 TRACE("EOF\n");
 877                 break;
 878             }
 879
 880             size += cread;
 881         }while(!size || ((flags & MSG_WAITALL) && size < len));
 882
 883         TRACE("received %ld bytes\n", size);
 884         *recvd = size;
 885         return ERROR_SUCCESS;
 886     }
 887 }
 888
 889 /******************************************************************************
 890  * NETCON_query_data_available
 891  * Returns the number of bytes of peeked data plus the number of bytes of
 892  * queued, but unread data.
 893  */
 894 BOOL NETCON_query_data_available(netconn_t *connection, DWORD *available)
 895 {
 896     *available = 0;
 897
 898     if(!connection->secure)
 899     {
 900 #ifdef FIONREAD
 901         ULONG unread;
 902         int retval = ioctlsocket(connection->socket, FIONREAD, &unread);
 903         if (!retval)
 904         {
 905             TRACE("%d bytes of queued, but unread data\n", unread);
 906             *available += unread;
 907         }
 908 #endif
 909     }
 910     else
 911     {
 912         *available = connection->peek_len;
 913     }
 914     return TRUE;
 915 }
 916
 917 BOOL NETCON_is_alive(netconn_t *netconn)
 918 {
 919 #ifdef MSG_DONTWAIT
 920     ssize_t len;
 921     BYTE b;
 922
 923     len = recv(netconn->socket, &b, 1, MSG_PEEK|MSG_DONTWAIT);
 924     return len == 1 || (len == -1 && errno == EWOULDBLOCK);
 925 #elif defined(__MINGW32__) || defined(_MSC_VER)
 926     ULONG mode;
 927     int len;
 928     char b;
 929
 930     mode = 1;
 931     if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
 932         return FALSE;
 933
 934     len = recv(netconn->socket, &b, 1, MSG_PEEK);
 935
 936     mode = 0;
 937     if(!ioctlsocket(netconn->socket, FIONBIO, &mode))
 938         return FALSE;
 939
 940     return len == 1 || (len == -1 && errno == WSAEWOULDBLOCK);
 941 #else
 942     FIXME("not supported on this platform\n");
 943     return TRUE;
 944 #endif
 945 }
 946
 947 LPCVOID NETCON_GetCert(netconn_t *connection)
 948 {
 949     const CERT_CONTEXT *ret;
 950     SECURITY_STATUS res;
 951
 952     if (!connection->secure)
 953         return NULL;
 954
 955     res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
 956     return res == SEC_E_OK ? ret : NULL;
 957 }
 958
 959 int NETCON_GetCipherStrength(netconn_t *connection)
 960 {
 961     SecPkgContext_ConnectionInfo conn_info;
 962     SECURITY_STATUS res;
 963
 964     if (!connection->secure)
 965         return 0;
 966
 967     res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
 968     if(res != SEC_E_OK)
 969         WARN("QueryContextAttributesW failed: %08x\n", res);
 970     return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
 971 }
 972
 973 DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value)
 974 {
 975     int result;
 976     struct timeval tv;
 977
 978     /* value is in milliseconds, convert to struct timeval */
 979     if (value == INFINITE)
 980     {
 981         tv.tv_sec = 0;
 982         tv.tv_usec = 0;
 983     }
 984     else
 985     {
 986         tv.tv_sec = value / 1000;
 987         tv.tv_usec = (value % 1000) * 1000;
 988     }
 989     result = setsockopt(connection->socket, SOL_SOCKET,
 990                         send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
 991                         sizeof(tv));
 992     if (result == -1)
 993     {
 994         WARN("setsockopt failed (%s)\n", strerror(errno));
 995         return sock_get_error(errno);
 996     }
 997     return ERROR_SUCCESS;
 998 }