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 #define USE_WINSOCK
  31 #endif
  32
  33 #ifdef USE_WINSOCK
  34 #include <ws2tcpip.h>
  35 #endif
  36
  37 #include <sys/types.h>
  38 #ifdef HAVE_POLL_H
  39 #include <poll.h>
  40 #endif
  41 #ifdef HAVE_SYS_POLL_H
  42 # include <sys/poll.h>
  43 #endif
  44 #ifdef HAVE_SYS_TIME_H
  45 # include <sys/time.h>
  46 #endif
  47 #ifdef HAVE_SYS_SOCKET_H
  48 # include <sys/socket.h>
  49 #endif
  50 #ifdef HAVE_SYS_FILIO_H
  51 # include <sys/filio.h>
  52 #endif
  53 #ifdef HAVE_UNISTD_H
  54 # include <unistd.h>
  55 #endif
  56 #ifdef HAVE_SYS_IOCTL_H
  57 # include <sys/ioctl.h>
  58 #endif
  59 #include <time.h>
  60 #ifdef HAVE_NETDB_H
  61 # include <netdb.h>
  62 #endif
  63 #ifdef HAVE_NETINET_IN_H
  64 # include <netinet/in.h>
  65 #endif
  66 #ifdef HAVE_NETINET_TCP_H
  67 # include <netinet/tcp.h>
  68 #endif
  69 #ifndef USE_WINSOCK
  70 #include <errno.h>
  71 #endif
  72
  73 #include <stdarg.h>
  74 #include <stdlib.h>
  75 #include <string.h>
  76 #include <stdio.h>
  77 #include <assert.h>
  78
  79 #include "wine/library.h"
  80 #include "windef.h"
  81 #include "winbase.h"
  82 #include "wininet.h"
  83 #include "winerror.h"
  84
  85 #include "wine/debug.h"
  86 #include "internet.h"
  87
  88 /* To avoid conflicts with the Unix socket headers. we only need it for
  89  * the error codes anyway. */
  90 #define USE_WS_PREFIX
  91 #include "winsock2.h"
  92
  93 #define RESPONSE_TIMEOUT        30            /* FROM internet.c */
  94
  95 #ifdef MSG_DONTWAIT
  96 #define WINE_MSG_DONTWAIT MSG_DONTWAIT
  97 #else
  98 #define WINE_MSG_DONTWAIT 0
  99 #endif
 100
 101 WINE_DEFAULT_DEBUG_CHANNEL(wininet);
 102
 103 /* FIXME!!!!!!
 104  *    This should use winsock - To use winsock the functions will have to change a bit
 105  *        as they are designed for unix sockets.
 106  */
 107
 108 static DWORD netconn_verify_cert(netconn_t *conn, PCCERT_CONTEXT cert, HCERTSTORE store)
 109 {
 110     BOOL ret;
 111     CERT_CHAIN_PARA chainPara = { sizeof(chainPara), { 0 } };
 112     PCCERT_CHAIN_CONTEXT chain;
 113     char oid_server_auth[] = szOID_PKIX_KP_SERVER_AUTH;
 114     char *server_auth[] = { oid_server_auth };
 115     DWORD err = ERROR_SUCCESS, errors;
 116
 117     static const DWORD supportedErrors =
 118         CERT_TRUST_IS_NOT_TIME_VALID |
 119         CERT_TRUST_IS_UNTRUSTED_ROOT |
 120         CERT_TRUST_IS_PARTIAL_CHAIN |
 121         CERT_TRUST_IS_NOT_SIGNATURE_VALID |
 122         CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 123
 124     TRACE("verifying %s\n", debugstr_w(conn->server->name));
 125
 126     chainPara.RequestedUsage.Usage.cUsageIdentifier = 1;
 127     chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = server_auth;
 128     if (!(ret = CertGetCertificateChain(NULL, cert, NULL, store, &chainPara, 0, NULL, &chain))) {
 129         TRACE("failed\n");
 130         return GetLastError();
 131     }
 132
 133     errors = chain->TrustStatus.dwErrorStatus;
 134
 135     do {
 136         /* This seems strange, but that's what tests show */
 137         if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
 138             WARN("ERROR_INTERNET_SEC_CERT_REV_FAILED\n");
 139             err = ERROR_INTERNET_SEC_CERT_REV_FAILED;
 140             if(conn->mask_errors)
 141                 conn->security_flags |= _SECURITY_FLAG_CERT_REV_FAILED;
 142             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION))
 143                 break;
 144         }
 145
 146         if (chain->TrustStatus.dwErrorStatus & ~supportedErrors) {
 147             WARN("error status %x\n", chain->TrustStatus.dwErrorStatus & ~supportedErrors);
 148             err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 149             errors &= supportedErrors;
 150             if(!conn->mask_errors)
 151                 break;
 152             WARN("unknown error flags\n");
 153         }
 154
 155         if(errors & CERT_TRUST_IS_NOT_TIME_VALID) {
 156             WARN("CERT_TRUST_IS_NOT_TIME_VALID\n");
 157             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_CERT_DATE_INVALID)) {
 158                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_DATE_INVALID;
 159                 if(!conn->mask_errors)
 160                     break;
 161                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_DATE;
 162             }
 163             errors &= ~CERT_TRUST_IS_NOT_TIME_VALID;
 164         }
 165
 166         if(errors & CERT_TRUST_IS_UNTRUSTED_ROOT) {
 167             WARN("CERT_TRUST_IS_UNTRUSTED_ROOT\n");
 168             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 169                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 170                 if(!conn->mask_errors)
 171                     break;
 172                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 173             }
 174             errors &= ~CERT_TRUST_IS_UNTRUSTED_ROOT;
 175         }
 176
 177         if(errors & CERT_TRUST_IS_PARTIAL_CHAIN) {
 178             WARN("CERT_TRUST_IS_PARTIAL_CHAIN\n");
 179             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 180                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 181                 if(!conn->mask_errors)
 182                     break;
 183                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 184             }
 185             errors &= ~CERT_TRUST_IS_PARTIAL_CHAIN;
 186         }
 187
 188         if(errors & CERT_TRUST_IS_NOT_SIGNATURE_VALID) {
 189             WARN("CERT_TRUST_IS_NOT_SIGNATURE_VALID\n");
 190             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_UNKNOWN_CA)) {
 191                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_INVALID_CA;
 192                 if(!conn->mask_errors)
 193                     break;
 194                 conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CA;
 195             }
 196             errors &= ~CERT_TRUST_IS_NOT_SIGNATURE_VALID;
 197         }
 198
 199         if(errors & CERT_TRUST_IS_NOT_VALID_FOR_USAGE) {
 200             WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE\n");
 201             if(!(conn->security_flags & SECURITY_FLAG_IGNORE_WRONG_USAGE)) {
 202                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 203                 if(!conn->mask_errors)
 204                     break;
 205                 WARN("CERT_TRUST_IS_NOT_VALID_FOR_USAGE, unknown error flags\n");
 206             }
 207             errors &= ~CERT_TRUST_IS_NOT_VALID_FOR_USAGE;
 208         }
 209
 210         if(err == ERROR_INTERNET_SEC_CERT_REV_FAILED) {
 211             assert(conn->security_flags & SECURITY_FLAG_IGNORE_REVOCATION);
 212             err = ERROR_SUCCESS;
 213         }
 214     }while(0);
 215
 216     if(!err || conn->mask_errors) {
 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 = conn->server->name;
 231         sslExtraPolicyPara.fdwChecks = conn->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, &policyStatus);
 237         /* Any error in the policy status indicates that the
 238          * policy couldn't be verified.
 239          */
 240         if(ret) {
 241             if(policyStatus.dwError == CERT_E_CN_NO_MATCH) {
 242                 WARN("CERT_E_CN_NO_MATCH\n");
 243                 if(conn->mask_errors)
 244                     conn->security_flags |= _SECURITY_FLAG_CERT_INVALID_CN;
 245                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_CERT_CN_INVALID;
 246             }else if(policyStatus.dwError) {
 247                 WARN("policyStatus.dwError %x\n", policyStatus.dwError);
 248                 if(conn->mask_errors)
 249                     WARN("unknown error flags for policy status %x\n", policyStatus.dwError);
 250                 err = conn->mask_errors && err ? ERROR_INTERNET_SEC_CERT_ERRORS : ERROR_INTERNET_SEC_INVALID_CERT;
 251             }
 252         }else {
 253             err = GetLastError();
 254         }
 255     }
 256
 257     if(err) {
 258         WARN("failed %u\n", err);
 259         CertFreeCertificateChain(chain);
 260         if(conn->server->cert_chain) {
 261             CertFreeCertificateChain(conn->server->cert_chain);
 262             conn->server->cert_chain = NULL;
 263         }
 264         if(conn->mask_errors)
 265             conn->server->security_flags |= conn->security_flags & _SECURITY_ERROR_FLAGS_MASK;
 266         return err;
 267     }
 268
 269     /* FIXME: Reuse cached chain */
 270     if(conn->server->cert_chain)
 271         CertFreeCertificateChain(chain);
 272     else
 273         conn->server->cert_chain = chain;
 274     return ERROR_SUCCESS;
 275 }
 276
 277 static SecHandle cred_handle, compat_cred_handle;
 278 static BOOL cred_handle_initialized, have_compat_cred_handle;
 279
 280 static CRITICAL_SECTION init_sechandle_cs;
 281 static CRITICAL_SECTION_DEBUG init_sechandle_cs_debug = {
 282     0, 0, &init_sechandle_cs,
 283     { &init_sechandle_cs_debug.ProcessLocksList,
 284       &init_sechandle_cs_debug.ProcessLocksList },
 285     0, 0, { (DWORD_PTR)(__FILE__ ": init_sechandle_cs") }
 286 };
 287 static CRITICAL_SECTION init_sechandle_cs = { &init_sechandle_cs_debug, -1, 0, 0, 0, 0 };
 288
 289 static BOOL ensure_cred_handle(void)
 290 {
 291     SECURITY_STATUS res = SEC_E_OK;
 292
 293     EnterCriticalSection(&init_sechandle_cs);
 294
 295     if(!cred_handle_initialized) {
 296         SCHANNEL_CRED cred = {SCHANNEL_CRED_VERSION};
 297         SecPkgCred_SupportedProtocols prots;
 298
 299         res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
 300                 NULL, NULL, &cred_handle, NULL);
 301         if(res == SEC_E_OK) {
 302             res = QueryCredentialsAttributesA(&cred_handle, SECPKG_ATTR_SUPPORTED_PROTOCOLS, &prots);
 303             if(res != SEC_E_OK || (prots.grbitProtocol & SP_PROT_TLS1_1PLUS_CLIENT)) {
 304                 cred.grbitEnabledProtocols = prots.grbitProtocol & ~SP_PROT_TLS1_1PLUS_CLIENT;
 305                 res = AcquireCredentialsHandleW(NULL, (WCHAR*)UNISP_NAME_W, SECPKG_CRED_OUTBOUND, NULL, &cred,
 306                        NULL, NULL, &compat_cred_handle, NULL);
 307                 have_compat_cred_handle = res == SEC_E_OK;
 308             }
 309         }
 310
 311         cred_handle_initialized = res == SEC_E_OK;
 312     }
 313
 314     LeaveCriticalSection(&init_sechandle_cs);
 315
 316     if(res != SEC_E_OK) {
 317         WARN("Failed: %08x\n", res);
 318         return FALSE;
 319     }
 320
 321     return TRUE;
 322 }
 323
 324 #ifdef USE_WINSOCK
 325 static BOOL winsock_loaded = FALSE;
 326
 327 static BOOL WINAPI winsock_startup(INIT_ONCE *once, void *param, void **context)
 328 {
 329     WSADATA wsa_data;
 330     DWORD res;
 331
 332     res = WSAStartup(MAKEWORD(1,1), &wsa_data);
 333     if(res == ERROR_SUCCESS)
 334         winsock_loaded = TRUE;
 335     else
 336         ERR("WSAStartup failed: %u\n", res);
 337     return TRUE;
 338 }
 339 #endif
 340
 341 void init_winsock(void)
 342 {
 343 #ifdef USE_WINSOCK
 344     static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT;
 345     InitOnceExecuteOnce(&init_once, winsock_startup, NULL, NULL);
 346 #endif
 347 }
 348
 349 static void set_socket_blocking(int socket, blocking_mode_t mode)
 350 {
 351 #ifdef USE_WINSOCK
 352     ULONG arg = mode == BLOCKING_DISALLOW;
 353     ioctlsocket(socket, FIONBIO, &arg);
 354 #endif
 355 }
 356
 357 static DWORD create_netconn_socket(server_t *server, netconn_t *netconn, DWORD timeout)
 358 {
 359     int result;
 360     ULONG flag;
 361     DWORD res;
 362
 363     init_winsock();
 364
 365     assert(server->addr_len);
 366     result = netconn->socket = socket(server->addr.ss_family, SOCK_STREAM, 0);
 367     if(result != -1) {
 368         set_socket_blocking(netconn->socket, BLOCKING_DISALLOW);
 369         result = connect(netconn->socket, (struct sockaddr*)&server->addr, server->addr_len);
 370         if(result == -1)
 371         {
 372             res = sock_get_error();
 373             if (res == WSAEINPROGRESS || res == WSAEWOULDBLOCK) {
 374                 struct pollfd pfd;
 375                 int res;
 376
 377                 pfd.fd = netconn->socket;
 378                 pfd.events = POLLOUT;
 379                 res = poll(&pfd, 1, timeout);
 380                 if (!res)
 381                 {
 382                     closesocket(netconn->socket);
 383                     netconn->socket = -1;
 384                     return ERROR_INTERNET_CANNOT_CONNECT;
 385                 }
 386                 else if (res > 0)
 387                 {
 388                     int err;
 389                     socklen_t len = sizeof(err);
 390                     if (!getsockopt(netconn->socket, SOL_SOCKET, SO_ERROR, (void *)&err, &len) && !err)
 391                         result = 0;
 392                 }
 393             }
 394         }
 395         if(result == -1)
 396         {
 397             closesocket(netconn->socket);
 398             netconn->socket = -1;
 399         }
 400         else {
 401             set_socket_blocking(netconn->socket, BLOCKING_ALLOW);
 402         }
 403     }
 404     if(result == -1)
 405         return ERROR_INTERNET_CANNOT_CONNECT;
 406
 407 #ifdef TCP_NODELAY
 408     flag = 1;
 409     result = setsockopt(netconn->socket, IPPROTO_TCP, TCP_NODELAY, (void*)&flag, sizeof(flag));
 410     if(result < 0)
 411         WARN("setsockopt(TCP_NODELAY) failed\n");
 412 #endif
 413
 414     return ERROR_SUCCESS;
 415 }
 416
 417 DWORD create_netconn(BOOL useSSL, server_t *server, DWORD security_flags, BOOL mask_errors, DWORD timeout, netconn_t **ret)
 418 {
 419     netconn_t *netconn;
 420     int result;
 421
 422     netconn = heap_alloc_zero(sizeof(*netconn));
 423     if(!netconn)
 424         return ERROR_OUTOFMEMORY;
 425
 426     netconn->socket = -1;
 427     netconn->security_flags = security_flags | server->security_flags;
 428     netconn->mask_errors = mask_errors;
 429     list_init(&netconn->pool_entry);
 430     SecInvalidateHandle(&netconn->ssl_ctx);
 431
 432     result = create_netconn_socket(server, netconn, timeout);
 433     if (result != ERROR_SUCCESS) {
 434         heap_free(netconn);
 435         return result;
 436     }
 437
 438     server_addref(server);
 439     netconn->server = server;
 440     *ret = netconn;
 441     return result;
 442 }
 443
 444 BOOL is_valid_netconn(netconn_t *netconn)
 445 {
 446     return netconn && netconn->socket != -1;
 447 }
 448
 449 void close_netconn(netconn_t *netconn)
 450 {
 451     closesocket(netconn->socket);
 452     netconn->socket = -1;
 453 }
 454
 455 void free_netconn(netconn_t *netconn)
 456 {
 457     server_release(netconn->server);
 458
 459     if (netconn->secure) {
 460         heap_free(netconn->peek_msg_mem);
 461         netconn->peek_msg_mem = NULL;
 462         netconn->peek_msg = NULL;
 463         netconn->peek_len = 0;
 464         heap_free(netconn->ssl_buf);
 465         netconn->ssl_buf = NULL;
 466         heap_free(netconn->extra_buf);
 467         netconn->extra_buf = NULL;
 468         netconn->extra_len = 0;
 469         if (SecIsValidHandle(&netconn->ssl_ctx))
 470             DeleteSecurityContext(&netconn->ssl_ctx);
 471     }
 472
 473     heap_free(netconn);
 474 }
 475
 476 void NETCON_unload(void)
 477 {
 478     if(cred_handle_initialized)
 479         FreeCredentialsHandle(&cred_handle);
 480     if(have_compat_cred_handle)
 481         FreeCredentialsHandle(&compat_cred_handle);
 482     DeleteCriticalSection(&init_sechandle_cs);
 483
 484 #ifdef USE_WINSOCK
 485     WSACleanup();
 486 #endif
 487 }
 488
 489 /* translate a unix error code into a winsock one */
 490 int sock_get_error(void)
 491 {
 492 #ifdef USE_WINSOCK
 493     return WSAGetLastError();
 494 #else
 495     switch (errno)
 496     {
 497         case EINTR:             return WSAEINTR;
 498         case EBADF:             return WSAEBADF;
 499         case EPERM:
 500         case EACCES:            return WSAEACCES;
 501         case EFAULT:            return WSAEFAULT;
 502         case EINVAL:            return WSAEINVAL;
 503         case EMFILE:            return WSAEMFILE;
 504 #if EAGAIN != EWOULDBLOCK
 505         case EAGAIN:
 506 #endif
 507         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 508         case EINPROGRESS:       return WSAEINPROGRESS;
 509         case EALREADY:          return WSAEALREADY;
 510         case ENOTSOCK:          return WSAENOTSOCK;
 511         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 512         case EMSGSIZE:          return WSAEMSGSIZE;
 513         case EPROTOTYPE:        return WSAEPROTOTYPE;
 514         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 515         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 516         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 517         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 518         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 519         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 520         case EADDRINUSE:        return WSAEADDRINUSE;
 521         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 522         case ENETDOWN:          return WSAENETDOWN;
 523         case ENETUNREACH:       return WSAENETUNREACH;
 524         case ENETRESET:         return WSAENETRESET;
 525         case ECONNABORTED:      return WSAECONNABORTED;
 526         case EPIPE:
 527         case ECONNRESET:        return WSAECONNRESET;
 528         case ENOBUFS:           return WSAENOBUFS;
 529         case EISCONN:           return WSAEISCONN;
 530         case ENOTCONN:          return WSAENOTCONN;
 531         case ESHUTDOWN:         return WSAESHUTDOWN;
 532         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 533         case ETIMEDOUT:         return WSAETIMEDOUT;
 534         case ECONNREFUSED:      return WSAECONNREFUSED;
 535         case ELOOP:             return WSAELOOP;
 536         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 537         case EHOSTDOWN:         return WSAEHOSTDOWN;
 538         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 539         case ENOTEMPTY:         return WSAENOTEMPTY;
 540 #ifdef EPROCLIM
 541         case EPROCLIM:          return WSAEPROCLIM;
 542 #endif
 543 #ifdef EUSERS
 544         case EUSERS:            return WSAEUSERS;
 545 #endif
 546 #ifdef EDQUOT
 547         case EDQUOT:            return WSAEDQUOT;
 548 #endif
 549 #ifdef ESTALE
 550         case ESTALE:            return WSAESTALE;
 551 #endif
 552 #ifdef EREMOTE
 553         case EREMOTE:           return WSAEREMOTE;
 554 #endif
 555     default: perror("sock_get_error"); return WSAEFAULT;
 556     }
 557 #endif
 558 }
 559
 560 int sock_send(int fd, const void *msg, size_t len, int flags)
 561 {
 562     int ret;
 563     do
 564     {
 565         ret = send(fd, msg, len, flags);
 566     }
 567     while(ret == -1 && sock_get_error() == WSAEINTR);
 568     return ret;
 569 }
 570
 571 int sock_recv(int fd, void *msg, size_t len, int flags)
 572 {
 573     int ret;
 574     do
 575     {
 576         ret = recv(fd, msg, len, flags);
 577     }
 578     while(ret == -1 && sock_get_error() == WSAEINTR);
 579     return ret;
 580 }
 581
 582 static DWORD netcon_secure_connect_setup(netconn_t *connection, BOOL compat_mode)
 583 {
 584     SecBuffer out_buf = {0, SECBUFFER_TOKEN, NULL}, in_bufs[2] = {{0, SECBUFFER_TOKEN}, {0, SECBUFFER_EMPTY}};
 585     SecBufferDesc out_desc = {SECBUFFER_VERSION, 1, &out_buf}, in_desc = {SECBUFFER_VERSION, 2, in_bufs};
 586     SecHandle *cred = &cred_handle;
 587     BYTE *read_buf;
 588     SIZE_T read_buf_size = 2048;
 589     ULONG attrs = 0;
 590     CtxtHandle ctx;
 591     SSIZE_T size;
 592     int bits;
 593     const CERT_CONTEXT *cert;
 594     SECURITY_STATUS status;
 595     DWORD res = ERROR_SUCCESS;
 596
 597     const DWORD isc_req_flags = ISC_REQ_ALLOCATE_MEMORY|ISC_REQ_USE_SESSION_KEY|ISC_REQ_CONFIDENTIALITY
 598         |ISC_REQ_SEQUENCE_DETECT|ISC_REQ_REPLAY_DETECT|ISC_REQ_MANUAL_CRED_VALIDATION;
 599
 600     if(!ensure_cred_handle())
 601         return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 602
 603     if(compat_mode) {
 604         if(!have_compat_cred_handle)
 605             return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 606         cred = &compat_cred_handle;
 607     }
 608
 609     read_buf = heap_alloc(read_buf_size);
 610     if(!read_buf)
 611         return ERROR_OUTOFMEMORY;
 612
 613     status = InitializeSecurityContextW(cred, NULL, connection->server->name, isc_req_flags, 0, 0, NULL, 0,
 614             &ctx, &out_desc, &attrs, NULL);
 615
 616     assert(status != SEC_E_OK);
 617
 618     while(status == SEC_I_CONTINUE_NEEDED || status == SEC_E_INCOMPLETE_MESSAGE) {
 619         if(out_buf.cbBuffer) {
 620             assert(status == SEC_I_CONTINUE_NEEDED);
 621
 622             TRACE("sending %u bytes\n", out_buf.cbBuffer);
 623
 624             size = sock_send(connection->socket, out_buf.pvBuffer, out_buf.cbBuffer, 0);
 625             if(size != out_buf.cbBuffer) {
 626                 ERR("send failed\n");
 627                 status = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 628                 break;
 629             }
 630
 631             FreeContextBuffer(out_buf.pvBuffer);
 632             out_buf.pvBuffer = NULL;
 633             out_buf.cbBuffer = 0;
 634         }
 635
 636         if(status == SEC_I_CONTINUE_NEEDED) {
 637             assert(in_bufs[1].cbBuffer < read_buf_size);
 638
 639             memmove(read_buf, (BYTE*)in_bufs[0].pvBuffer+in_bufs[0].cbBuffer-in_bufs[1].cbBuffer, in_bufs[1].cbBuffer);
 640             in_bufs[0].cbBuffer = in_bufs[1].cbBuffer;
 641
 642             in_bufs[1].BufferType = SECBUFFER_EMPTY;
 643             in_bufs[1].cbBuffer = 0;
 644             in_bufs[1].pvBuffer = NULL;
 645         }
 646
 647         assert(in_bufs[0].BufferType == SECBUFFER_TOKEN);
 648         assert(in_bufs[1].BufferType == SECBUFFER_EMPTY);
 649
 650         if(in_bufs[0].cbBuffer + 1024 > read_buf_size) {
 651             BYTE *new_read_buf;
 652
 653             new_read_buf = heap_realloc(read_buf, read_buf_size + 1024);
 654             if(!new_read_buf) {
 655                 status = E_OUTOFMEMORY;
 656                 break;
 657             }
 658
 659             in_bufs[0].pvBuffer = read_buf = new_read_buf;
 660             read_buf_size += 1024;
 661         }
 662
 663         size = sock_recv(connection->socket, read_buf+in_bufs[0].cbBuffer, read_buf_size-in_bufs[0].cbBuffer, 0);
 664         if(size < 1) {
 665             WARN("recv error\n");
 666             res = ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 667             break;
 668         }
 669
 670         TRACE("recv %lu bytes\n", size);
 671
 672         in_bufs[0].cbBuffer += size;
 673         in_bufs[0].pvBuffer = read_buf;
 674         status = InitializeSecurityContextW(cred, &ctx, connection->server->name,  isc_req_flags, 0, 0, &in_desc,
 675                 0, NULL, &out_desc, &attrs, NULL);
 676         TRACE("InitializeSecurityContext ret %08x\n", status);
 677
 678         if(status == SEC_E_OK) {
 679             if(SecIsValidHandle(&connection->ssl_ctx))
 680                 DeleteSecurityContext(&connection->ssl_ctx);
 681             connection->ssl_ctx = ctx;
 682
 683             if(in_bufs[1].BufferType == SECBUFFER_EXTRA)
 684                 FIXME("SECBUFFER_EXTRA not supported\n");
 685
 686             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_STREAM_SIZES, &connection->ssl_sizes);
 687             if(status != SEC_E_OK) {
 688                 WARN("Could not get sizes\n");
 689                 break;
 690             }
 691
 692             status = QueryContextAttributesW(&ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&cert);
 693             if(status == SEC_E_OK) {
 694                 res = netconn_verify_cert(connection, cert, cert->hCertStore);
 695                 CertFreeCertificateContext(cert);
 696                 if(res != ERROR_SUCCESS) {
 697                     WARN("cert verify failed: %u\n", res);
 698                     break;
 699                 }
 700             }else {
 701                 WARN("Could not get cert\n");
 702                 break;
 703             }
 704
 705             connection->ssl_buf = heap_alloc(connection->ssl_sizes.cbHeader + connection->ssl_sizes.cbMaximumMessage
 706                     + connection->ssl_sizes.cbTrailer);
 707             if(!connection->ssl_buf) {
 708                 res = GetLastError();
 709                 break;
 710             }
 711         }
 712     }
 713
 714     heap_free(read_buf);
 715
 716     if(status != SEC_E_OK || res != ERROR_SUCCESS) {
 717         WARN("Failed to establish SSL connection: %08x (%u)\n", status, res);
 718         heap_free(connection->ssl_buf);
 719         connection->ssl_buf = NULL;
 720         return res ? res : ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 721     }
 722
 723     TRACE("established SSL connection\n");
 724     connection->secure = TRUE;
 725     connection->security_flags |= SECURITY_FLAG_SECURE;
 726
 727     bits = NETCON_GetCipherStrength(connection);
 728     if (bits >= 128)
 729         connection->security_flags |= SECURITY_FLAG_STRENGTH_STRONG;
 730     else if (bits >= 56)
 731         connection->security_flags |= SECURITY_FLAG_STRENGTH_MEDIUM;
 732     else
 733         connection->security_flags |= SECURITY_FLAG_STRENGTH_WEAK;
 734
 735     if(connection->mask_errors)
 736         connection->server->security_flags = connection->security_flags;
 737     return ERROR_SUCCESS;
 738 }
 739
 740 /******************************************************************************
 741  * NETCON_secure_connect
 742  * Initiates a secure connection over an existing plaintext connection.
 743  */
 744 DWORD NETCON_secure_connect(netconn_t *connection, server_t *server)
 745 {
 746     DWORD res;
 747
 748     /* can't connect if we are already connected */
 749     if(connection->secure) {
 750         ERR("already connected\n");
 751         return ERROR_INTERNET_CANNOT_CONNECT;
 752     }
 753
 754     if(server != connection->server) {
 755         server_release(connection->server);
 756         server_addref(server);
 757         connection->server = server;
 758     }
 759
 760     /* connect with given TLS options */
 761     res = netcon_secure_connect_setup(connection, FALSE);
 762     if (res == ERROR_SUCCESS)
 763         return res;
 764
 765     /* FIXME: when got version alert and FIN from server */
 766     /* fallback to connect without TLSv1.1/TLSv1.2        */
 767     if (res == ERROR_INTERNET_SECURITY_CHANNEL_ERROR && have_compat_cred_handle)
 768     {
 769         closesocket(connection->socket);
 770         res = create_netconn_socket(connection->server, connection, 500);
 771         if (res != ERROR_SUCCESS)
 772             return res;
 773         res = netcon_secure_connect_setup(connection, TRUE);
 774     }
 775     return res;
 776 }
 777
 778 static BOOL send_ssl_chunk(netconn_t *conn, const void *msg, size_t size)
 779 {
 780     SecBuffer bufs[4] = {
 781         {conn->ssl_sizes.cbHeader, SECBUFFER_STREAM_HEADER, conn->ssl_buf},
 782         {size,  SECBUFFER_DATA, conn->ssl_buf+conn->ssl_sizes.cbHeader},
 783         {conn->ssl_sizes.cbTrailer, SECBUFFER_STREAM_TRAILER, conn->ssl_buf+conn->ssl_sizes.cbHeader+size},
 784         {0, SECBUFFER_EMPTY, NULL}
 785     };
 786     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 787     SECURITY_STATUS res;
 788
 789     memcpy(bufs[1].pvBuffer, msg, size);
 790     res = EncryptMessage(&conn->ssl_ctx, 0, &buf_desc, 0);
 791     if(res != SEC_E_OK) {
 792         WARN("EncryptMessage failed\n");
 793         return FALSE;
 794     }
 795
 796     if(sock_send(conn->socket, conn->ssl_buf, bufs[0].cbBuffer+bufs[1].cbBuffer+bufs[2].cbBuffer, 0) < 1) {
 797         WARN("send failed\n");
 798         return FALSE;
 799     }
 800
 801     return TRUE;
 802 }
 803
 804 /******************************************************************************
 805  * NETCON_send
 806  * Basically calls 'send()' unless we should use SSL
 807  * number of chars send is put in *sent
 808  */
 809 DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags,
 810                 int *sent /* out */)
 811 {
 812     if(!connection->secure)
 813     {
 814         *sent = sock_send(connection->socket, msg, len, flags);
 815         return *sent == -1 ? sock_get_error() : ERROR_SUCCESS;
 816     }
 817     else
 818     {
 819         const BYTE *ptr = msg;
 820         size_t chunk_size;
 821
 822         *sent = 0;
 823
 824         while(len) {
 825             chunk_size = min(len, connection->ssl_sizes.cbMaximumMessage);
 826             if(!send_ssl_chunk(connection, ptr, chunk_size))
 827                 return ERROR_INTERNET_SECURITY_CHANNEL_ERROR;
 828
 829             *sent += chunk_size;
 830             ptr += chunk_size;
 831             len -= chunk_size;
 832         }
 833
 834         return ERROR_SUCCESS;
 835     }
 836 }
 837
 838 static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, blocking_mode_t mode, SIZE_T *ret_size, BOOL *eof)
 839 {
 840     const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
 841     SecBuffer bufs[4];
 842     SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
 843     SSIZE_T size, buf_len = 0;
 844     blocking_mode_t tmp_mode;
 845     int i;
 846     SECURITY_STATUS res;
 847
 848     assert(conn->extra_len < ssl_buf_size);
 849
 850     /* BLOCKING_WAITALL is handled by caller */
 851     if(mode == BLOCKING_WAITALL)
 852         mode = BLOCKING_ALLOW;
 853
 854     if(conn->extra_len) {
 855         memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
 856         buf_len = conn->extra_len;
 857         conn->extra_len = 0;
 858         heap_free(conn->extra_buf);
 859         conn->extra_buf = NULL;
 860     }
 861
 862     tmp_mode = buf_len ? BLOCKING_DISALLOW : mode;
 863     set_socket_blocking(conn->socket, tmp_mode);
 864     size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, tmp_mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT);
 865     if(size < 0) {
 866         if(!buf_len) {
 867             if(sock_get_error() == WSAEWOULDBLOCK) {
 868                 TRACE("would block\n");
 869                 return WSAEWOULDBLOCK;
 870             }
 871             WARN("recv failed\n");
 872             return ERROR_INTERNET_CONNECTION_ABORTED;
 873         }
 874     }else {
 875         buf_len += size;
 876     }
 877
 878     *ret_size = buf_len;
 879
 880     if(!buf_len) {
 881         *eof = TRUE;
 882         return ERROR_SUCCESS;
 883     }
 884
 885     *eof = FALSE;
 886
 887     do {
 888         memset(bufs, 0, sizeof(bufs));
 889         bufs[0].BufferType = SECBUFFER_DATA;
 890         bufs[0].cbBuffer = buf_len;
 891         bufs[0].pvBuffer = conn->ssl_buf;
 892
 893         res = DecryptMessage(&conn->ssl_ctx, &buf_desc, 0, NULL);
 894         switch(res) {
 895         case SEC_E_OK:
 896             break;
 897         case SEC_I_CONTEXT_EXPIRED:
 898             TRACE("context expired\n");
 899             *eof = TRUE;
 900             return ERROR_SUCCESS;
 901         case SEC_E_INCOMPLETE_MESSAGE:
 902             assert(buf_len < ssl_buf_size);
 903
 904             set_socket_blocking(conn->socket, mode);
 905             size = sock_recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT);
 906             if(size < 1) {
 907                 if(size < 0 && sock_get_error() == WSAEWOULDBLOCK) {
 908                     TRACE("would block\n");
 909
 910                     /* FIXME: Optimize extra_buf usage. */
 911                     conn->extra_buf = heap_alloc(buf_len);
 912                     if(!conn->extra_buf)
 913                         return ERROR_NOT_ENOUGH_MEMORY;
 914
 915                     conn->extra_len = buf_len;
 916                     memcpy(conn->extra_buf, conn->ssl_buf, conn->extra_len);
 917                     return WSAEWOULDBLOCK;
 918                 }
 919
 920                 return ERROR_INTERNET_CONNECTION_ABORTED;
 921             }
 922
 923             buf_len += size;
 924             continue;
 925         default:
 926             WARN("failed: %08x\n", res);
 927             return ERROR_INTERNET_CONNECTION_ABORTED;
 928         }
 929     } while(res != SEC_E_OK);
 930
 931     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 932         if(bufs[i].BufferType == SECBUFFER_DATA) {
 933             size = min(buf_size, bufs[i].cbBuffer);
 934             memcpy(buf, bufs[i].pvBuffer, size);
 935             if(size < bufs[i].cbBuffer) {
 936                 assert(!conn->peek_len);
 937                 conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
 938                 if(!conn->peek_msg)
 939                     return ERROR_NOT_ENOUGH_MEMORY;
 940                 conn->peek_len = bufs[i].cbBuffer-size;
 941                 memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
 942             }
 943
 944             *ret_size = size;
 945         }
 946     }
 947
 948     for(i=0; i < sizeof(bufs)/sizeof(*bufs); i++) {
 949         if(bufs[i].BufferType == SECBUFFER_EXTRA) {
 950             conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
 951             if(!conn->extra_buf)
 952                 return ERROR_NOT_ENOUGH_MEMORY;
 953
 954             conn->extra_len = bufs[i].cbBuffer;
 955             memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
 956         }
 957     }
 958
 959     return ERROR_SUCCESS;
 960 }
 961
 962 /******************************************************************************
 963  * NETCON_recv
 964  * Basically calls 'recv()' unless we should use SSL
 965  * number of chars received is put in *recvd
 966  */
 967 DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, blocking_mode_t mode, int *recvd)
 968 {
 969     *recvd = 0;
 970     if (!len)
 971         return ERROR_SUCCESS;
 972
 973     if (!connection->secure)
 974     {
 975         int flags = 0;
 976
 977         switch(mode) {
 978         case BLOCKING_ALLOW:
 979             break;
 980         case BLOCKING_DISALLOW:
 981             flags = WINE_MSG_DONTWAIT;
 982             break;
 983         case BLOCKING_WAITALL:
 984             flags = MSG_WAITALL;
 985             break;
 986         }
 987
 988         set_socket_blocking(connection->socket, mode);
 989         *recvd = sock_recv(connection->socket, buf, len, flags);
 990         return *recvd == -1 ? sock_get_error() :  ERROR_SUCCESS;
 991     }
 992     else
 993     {
 994         SIZE_T size = 0, cread;
 995         BOOL eof;
 996         DWORD res;
 997
 998         if(connection->peek_msg) {
 999             size = min(len, connection->peek_len);
1000             memcpy(buf, connection->peek_msg, size);
1001             connection->peek_len -= size;
1002             connection->peek_msg += size;
1003
1004             if(!connection->peek_len) {
1005                 heap_free(connection->peek_msg_mem);
1006                 connection->peek_msg_mem = connection->peek_msg = NULL;
1007             }
1008             /* check if we have enough data from the peek buffer */
1009             if(mode != BLOCKING_WAITALL || size == len) {
1010                 *recvd = size;
1011                 return ERROR_SUCCESS;
1012             }
1013
1014             mode = BLOCKING_DISALLOW;
1015         }
1016
1017         do {
1018             res = read_ssl_chunk(connection, (BYTE*)buf+size, len-size, mode, &cread, &eof);
1019             if(res != ERROR_SUCCESS) {
1020                 if(res == WSAEWOULDBLOCK) {
1021                     if(size)
1022                         res = ERROR_SUCCESS;
1023                 }else {
1024                     WARN("read_ssl_chunk failed\n");
1025                 }
1026                 break;
1027             }
1028
1029             if(eof) {
1030                 TRACE("EOF\n");
1031                 break;
1032             }
1033
1034             size += cread;
1035         }while(!size || (mode == BLOCKING_WAITALL && size < len));
1036
1037         TRACE("received %ld bytes\n", size);
1038         *recvd = size;
1039         return res;
1040     }
1041 }
1042
1043 /******************************************************************************
1044  * NETCON_query_data_available
1045  * Returns the number of bytes of peeked data plus the number of bytes of
1046  * queued, but unread data.
1047  */
1048 BOOL NETCON_query_data_available(netconn_t *connection, DWORD *available)
1049 {
1050     *available = 0;
1051
1052     if(!connection->secure)
1053     {
1054 #ifdef FIONREAD
1055         ULONG unread;
1056         int retval = ioctlsocket(connection->socket, FIONREAD, &unread);
1057         if (!retval)
1058         {
1059             TRACE("%d bytes of queued, but unread data\n", unread);
1060             *available += unread;
1061         }
1062 #endif
1063     }
1064     else
1065     {
1066         *available = connection->peek_len;
1067     }
1068     return TRUE;
1069 }
1070
1071 BOOL NETCON_is_alive(netconn_t *netconn)
1072 {
1073 #ifdef MSG_DONTWAIT
1074     ssize_t len;
1075     BYTE b;
1076
1077     len = sock_recv(netconn->socket, &b, 1, MSG_PEEK|MSG_DONTWAIT);
1078     return len == 1 || (len == -1 && sock_get_error() == WSAEWOULDBLOCK);
1079 #elif defined(USE_WINSOCK)
1080     int len;
1081     char b;
1082
1083     set_socket_blocking(netconn->socket, BLOCKING_DISALLOW);
1084     len = sock_recv(netconn->socket, &b, 1, MSG_PEEK);
1085     set_socket_blocking(netconn->socket, BLOCKING_ALLOW);
1086
1087     return len == 1 || (len == -1 && sock_get_error() == WSAEWOULDBLOCK);
1088 #else
1089     FIXME("not supported on this platform\n");
1090     return TRUE;
1091 #endif
1092 }
1093
1094 LPCVOID NETCON_GetCert(netconn_t *connection)
1095 {
1096     const CERT_CONTEXT *ret;
1097     SECURITY_STATUS res;
1098
1099     res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (void*)&ret);
1100     return res == SEC_E_OK ? ret : NULL;
1101 }
1102
1103 int NETCON_GetCipherStrength(netconn_t *connection)
1104 {
1105     SecPkgContext_ConnectionInfo conn_info;
1106     SECURITY_STATUS res;
1107
1108     if (!connection->secure)
1109         return 0;
1110
1111     res = QueryContextAttributesW(&connection->ssl_ctx, SECPKG_ATTR_CONNECTION_INFO, (void*)&conn_info);
1112     if(res != SEC_E_OK)
1113         WARN("QueryContextAttributesW failed: %08x\n", res);
1114     return res == SEC_E_OK ? conn_info.dwCipherStrength : 0;
1115 }
1116
1117 DWORD NETCON_set_timeout(netconn_t *connection, BOOL send, DWORD value)
1118 {
1119     int result;
1120     struct timeval tv;
1121
1122     /* value is in milliseconds, convert to struct timeval */
1123     if (value == INFINITE)
1124     {
1125         tv.tv_sec = 0;
1126         tv.tv_usec = 0;
1127     }
1128     else
1129     {
1130         tv.tv_sec = value / 1000;
1131         tv.tv_usec = (value % 1000) * 1000;
1132     }
1133     result = setsockopt(connection->socket, SOL_SOCKET,
1134                         send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
1135                         sizeof(tv));
1136     if (result == -1)
1137     {
1138         WARN("setsockopt failed\n");
1139         return sock_get_error();
1140     }
1141     return ERROR_SUCCESS;
1142 }