dlls/wininet/netconnection.c

   1 /*
   2  * Wininet - networking layer. Uses unix sockets or OpenSSL.
   3  *
   4  * Copyright 2002 TransGaming Technologies Inc.
   5  *
   6  * David Hammerton
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #if defined(__MINGW32__) || defined (_MSC_VER)
  27 #include <ws2tcpip.h>
  28 #endif
  29
  30 #include <sys/types.h>
  31 #ifdef HAVE_POLL_H
  32 #include <poll.h>
  33 #endif
  34 #ifdef HAVE_SYS_POLL_H
  35 # include <sys/poll.h>
  36 #endif
  37 #ifdef HAVE_SYS_TIME_H
  38 # include <sys/time.h>
  39 #endif
  40 #ifdef HAVE_SYS_SOCKET_H
  41 # include <sys/socket.h>
  42 #endif
  43 #ifdef HAVE_SYS_FILIO_H
  44 # include <sys/filio.h>
  45 #endif
  46 #ifdef HAVE_UNISTD_H
  47 # include <unistd.h>
  48 #endif
  49 #ifdef HAVE_SYS_IOCTL_H
  50 # include <sys/ioctl.h>
  51 #endif
  52 #include <time.h>
  53 #ifdef HAVE_NETDB_H
  54 # include <netdb.h>
  55 #endif
  56 #ifdef HAVE_NETINET_IN_H
  57 # include <netinet/in.h>
  58 #endif
  59 #ifdef HAVE_OPENSSL_SSL_H
  60 # include <openssl/ssl.h>
  61 #undef FAR
  62 #undef DSA
  63 #endif
  64
  65 #include <stdarg.h>
  66 #include <stdlib.h>
  67 #include <string.h>
  68 #include <stdio.h>
  69 #include <errno.h>
  70
  71 #include "wine/library.h"
  72 #include "windef.h"
  73 #include "winbase.h"
  74 #include "wininet.h"
  75 #include "winerror.h"
  76 #include "wincrypt.h"
  77
  78 #include "wine/debug.h"
  79 #include "internet.h"
  80
  81 /* To avoid conflicts with the Unix socket headers. we only need it for
  82  * the error codes anyway. */
  83 #define USE_WS_PREFIX
  84 #include "winsock2.h"
  85
  86 #define RESPONSE_TIMEOUT        30            /* FROM internet.c */
  87
  88
  89 WINE_DEFAULT_DEBUG_CHANNEL(wininet);
  90
  91 /* FIXME!!!!!!
  92  *    This should use winsock - To use winsock the functions will have to change a bit
  93  *        as they are designed for unix sockets.
  94  *    SSL stuff should use crypt32.dll
  95  */
  96
  97 #ifdef SONAME_LIBSSL
  98
  99 #include <openssl/err.h>
 100
 101 static void *OpenSSL_ssl_handle;
 102 static void *OpenSSL_crypto_handle;
 103
 104 static SSL_METHOD *meth;
 105 static SSL_CTX *ctx;
 106
 107 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
 108
 109 /* OpenSSL functions that we use */
 110 MAKE_FUNCPTR(SSL_library_init);
 111 MAKE_FUNCPTR(SSL_load_error_strings);
 112 MAKE_FUNCPTR(SSLv23_method);
 113 MAKE_FUNCPTR(SSL_CTX_new);
 114 MAKE_FUNCPTR(SSL_new);
 115 MAKE_FUNCPTR(SSL_free);
 116 MAKE_FUNCPTR(SSL_set_fd);
 117 MAKE_FUNCPTR(SSL_connect);
 118 MAKE_FUNCPTR(SSL_shutdown);
 119 MAKE_FUNCPTR(SSL_write);
 120 MAKE_FUNCPTR(SSL_read);
 121 MAKE_FUNCPTR(SSL_pending);
 122 MAKE_FUNCPTR(SSL_get_verify_result);
 123 MAKE_FUNCPTR(SSL_get_peer_certificate);
 124 MAKE_FUNCPTR(SSL_CTX_get_timeout);
 125 MAKE_FUNCPTR(SSL_CTX_set_timeout);
 126 MAKE_FUNCPTR(SSL_CTX_set_default_verify_paths);
 127
 128 /* OpenSSL's libcrypto functions that we use */
 129 MAKE_FUNCPTR(BIO_new_fp);
 130 MAKE_FUNCPTR(ERR_get_error);
 131 MAKE_FUNCPTR(ERR_error_string);
 132 MAKE_FUNCPTR(i2d_X509);
 133 #undef MAKE_FUNCPTR
 134
 135 #endif
 136
 137 BOOL NETCON_init(WININET_NETCONNECTION *connection, BOOL useSSL)
 138 {
 139     connection->useSSL = FALSE;
 140     connection->socketFD = -1;
 141     if (useSSL)
 142     {
 143 #if defined(SONAME_LIBSSL) && defined(SONAME_LIBCRYPTO)
 144         TRACE("using SSL connection\n");
 145         if (OpenSSL_ssl_handle) /* already initialized everything */
 146             return TRUE;
 147         OpenSSL_ssl_handle = wine_dlopen(SONAME_LIBSSL, RTLD_NOW, NULL, 0);
 148         if (!OpenSSL_ssl_handle)
 149         {
 150             ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
 151                 SONAME_LIBSSL);
 152             INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR);
 153             return FALSE;
 154         }
 155         OpenSSL_crypto_handle = wine_dlopen(SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0);
 156         if (!OpenSSL_crypto_handle)
 157         {
 158             ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
 159                 SONAME_LIBCRYPTO);
 160             INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR);
 161             return FALSE;
 162         }
 163
 164         /* mmm nice ugly macroness */
 165 #define DYNSSL(x) \
 166     p##x = wine_dlsym(OpenSSL_ssl_handle, #x, NULL, 0); \
 167     if (!p##x) \
 168     { \
 169         ERR("failed to load symbol %s\n", #x); \
 170         INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR); \
 171         return FALSE; \
 172     }
 173
 174         DYNSSL(SSL_library_init);
 175         DYNSSL(SSL_load_error_strings);
 176         DYNSSL(SSLv23_method);
 177         DYNSSL(SSL_CTX_new);
 178         DYNSSL(SSL_new);
 179         DYNSSL(SSL_free);
 180         DYNSSL(SSL_set_fd);
 181         DYNSSL(SSL_connect);
 182         DYNSSL(SSL_shutdown);
 183         DYNSSL(SSL_write);
 184         DYNSSL(SSL_read);
 185         DYNSSL(SSL_pending);
 186         DYNSSL(SSL_get_verify_result);
 187         DYNSSL(SSL_get_peer_certificate);
 188         DYNSSL(SSL_CTX_get_timeout);
 189         DYNSSL(SSL_CTX_set_timeout);
 190         DYNSSL(SSL_CTX_set_default_verify_paths);
 191 #undef DYNSSL
 192
 193 #define DYNCRYPTO(x) \
 194     p##x = wine_dlsym(OpenSSL_crypto_handle, #x, NULL, 0); \
 195     if (!p##x) \
 196     { \
 197         ERR("failed to load symbol %s\n", #x); \
 198         INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR); \
 199         return FALSE; \
 200     }
 201         DYNCRYPTO(BIO_new_fp);
 202         DYNCRYPTO(ERR_get_error);
 203         DYNCRYPTO(ERR_error_string);
 204         DYNCRYPTO(i2d_X509);
 205 #undef DYNCRYPTO
 206
 207         pSSL_library_init();
 208         pSSL_load_error_strings();
 209         pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
 210
 211         meth = pSSLv23_method();
 212 #else
 213         FIXME("can't use SSL, not compiled in.\n");
 214         INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR);
 215         return FALSE;
 216 #endif
 217     }
 218     return TRUE;
 219 }
 220
 221 BOOL NETCON_connected(WININET_NETCONNECTION *connection)
 222 {
 223     if (connection->socketFD == -1)
 224         return FALSE;
 225     else
 226         return TRUE;
 227 }
 228
 229 /* translate a unix error code into a winsock one */
 230 static int sock_get_error( int err )
 231 {
 232 #if !defined(__MINGW32__) && !defined (_MSC_VER)
 233     switch (err)
 234     {
 235         case EINTR:             return WSAEINTR;
 236         case EBADF:             return WSAEBADF;
 237         case EPERM:
 238         case EACCES:            return WSAEACCES;
 239         case EFAULT:            return WSAEFAULT;
 240         case EINVAL:            return WSAEINVAL;
 241         case EMFILE:            return WSAEMFILE;
 242         case EWOULDBLOCK:       return WSAEWOULDBLOCK;
 243         case EINPROGRESS:       return WSAEINPROGRESS;
 244         case EALREADY:          return WSAEALREADY;
 245         case ENOTSOCK:          return WSAENOTSOCK;
 246         case EDESTADDRREQ:      return WSAEDESTADDRREQ;
 247         case EMSGSIZE:          return WSAEMSGSIZE;
 248         case EPROTOTYPE:        return WSAEPROTOTYPE;
 249         case ENOPROTOOPT:       return WSAENOPROTOOPT;
 250         case EPROTONOSUPPORT:   return WSAEPROTONOSUPPORT;
 251         case ESOCKTNOSUPPORT:   return WSAESOCKTNOSUPPORT;
 252         case EOPNOTSUPP:        return WSAEOPNOTSUPP;
 253         case EPFNOSUPPORT:      return WSAEPFNOSUPPORT;
 254         case EAFNOSUPPORT:      return WSAEAFNOSUPPORT;
 255         case EADDRINUSE:        return WSAEADDRINUSE;
 256         case EADDRNOTAVAIL:     return WSAEADDRNOTAVAIL;
 257         case ENETDOWN:          return WSAENETDOWN;
 258         case ENETUNREACH:       return WSAENETUNREACH;
 259         case ENETRESET:         return WSAENETRESET;
 260         case ECONNABORTED:      return WSAECONNABORTED;
 261         case EPIPE:
 262         case ECONNRESET:        return WSAECONNRESET;
 263         case ENOBUFS:           return WSAENOBUFS;
 264         case EISCONN:           return WSAEISCONN;
 265         case ENOTCONN:          return WSAENOTCONN;
 266         case ESHUTDOWN:         return WSAESHUTDOWN;
 267         case ETOOMANYREFS:      return WSAETOOMANYREFS;
 268         case ETIMEDOUT:         return WSAETIMEDOUT;
 269         case ECONNREFUSED:      return WSAECONNREFUSED;
 270         case ELOOP:             return WSAELOOP;
 271         case ENAMETOOLONG:      return WSAENAMETOOLONG;
 272         case EHOSTDOWN:         return WSAEHOSTDOWN;
 273         case EHOSTUNREACH:      return WSAEHOSTUNREACH;
 274         case ENOTEMPTY:         return WSAENOTEMPTY;
 275 #ifdef EPROCLIM
 276         case EPROCLIM:          return WSAEPROCLIM;
 277 #endif
 278 #ifdef EUSERS
 279         case EUSERS:            return WSAEUSERS;
 280 #endif
 281 #ifdef EDQUOT
 282         case EDQUOT:            return WSAEDQUOT;
 283 #endif
 284 #ifdef ESTALE
 285         case ESTALE:            return WSAESTALE;
 286 #endif
 287 #ifdef EREMOTE
 288         case EREMOTE:           return WSAEREMOTE;
 289 #endif
 290     default: errno=err; perror("sock_set_error"); return WSAEFAULT;
 291     }
 292 #endif
 293     return err;
 294 }
 295
 296 /******************************************************************************
 297  * NETCON_create
 298  * Basically calls 'socket()'
 299  */
 300 BOOL NETCON_create(WININET_NETCONNECTION *connection, int domain,
 301               int type, int protocol)
 302 {
 303 #ifdef SONAME_LIBSSL
 304     if (connection->useSSL)
 305         return FALSE;
 306 #endif
 307
 308     connection->socketFD = socket(domain, type, protocol);
 309     if (connection->socketFD == -1)
 310     {
 311         INTERNET_SetLastError(sock_get_error(errno));
 312         return FALSE;
 313     }
 314     return TRUE;
 315 }
 316
 317 /******************************************************************************
 318  * NETCON_close
 319  * Basically calls 'close()' unless we should use SSL
 320  */
 321 BOOL NETCON_close(WININET_NETCONNECTION *connection)
 322 {
 323     int result;
 324
 325     if (!NETCON_connected(connection)) return FALSE;
 326
 327 #ifdef SONAME_LIBSSL
 328     if (connection->useSSL)
 329     {
 330         pSSL_shutdown(connection->ssl_s);
 331         pSSL_free(connection->ssl_s);
 332         connection->ssl_s = NULL;
 333
 334         connection->useSSL = FALSE;
 335     }
 336 #endif
 337
 338     result = closesocket(connection->socketFD);
 339     connection->socketFD = -1;
 340
 341     if (result == -1)
 342     {
 343         INTERNET_SetLastError(sock_get_error(errno));
 344         return FALSE;
 345     }
 346     return TRUE;
 347 }
 348 #ifdef SONAME_LIBSSL
 349 static BOOL check_hostname(X509 *cert, char *hostname)
 350 {
 351     /* FIXME: implement */
 352     return TRUE;
 353 }
 354 #endif
 355 /******************************************************************************
 356  * NETCON_secure_connect
 357  * Initiates a secure connection over an existing plaintext connection.
 358  */
 359 BOOL NETCON_secure_connect(WININET_NETCONNECTION *connection, LPCWSTR hostname)
 360 {
 361 #ifdef SONAME_LIBSSL
 362     long verify_res;
 363     X509 *cert;
 364     int len;
 365     char *hostname_unix;
 366
 367     /* can't connect if we are already connected */
 368     if (connection->useSSL)
 369     {
 370         ERR("already connected\n");
 371         return FALSE;
 372     }
 373
 374     ctx = pSSL_CTX_new(meth);
 375     if (!pSSL_CTX_set_default_verify_paths(ctx))
 376     {
 377         ERR("SSL_CTX_set_default_verify_paths failed: %s\n",
 378             pERR_error_string(pERR_get_error(), 0));
 379         INTERNET_SetLastError(ERROR_OUTOFMEMORY);
 380         return FALSE;
 381     }
 382     connection->ssl_s = pSSL_new(ctx);
 383     if (!connection->ssl_s)
 384     {
 385         ERR("SSL_new failed: %s\n",
 386             pERR_error_string(pERR_get_error(), 0));
 387         INTERNET_SetLastError(ERROR_OUTOFMEMORY);
 388         goto fail;
 389     }
 390
 391     if (!pSSL_set_fd(connection->ssl_s, connection->socketFD))
 392     {
 393         ERR("SSL_set_fd failed: %s\n",
 394             pERR_error_string(pERR_get_error(), 0));
 395         INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR);
 396         goto fail;
 397     }
 398
 399     if (pSSL_connect(connection->ssl_s) <= 0)
 400     {
 401         ERR("SSL_connect failed: %s\n",
 402             pERR_error_string(pERR_get_error(), 0));
 403         INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR);
 404         goto fail;
 405     }
 406     cert = pSSL_get_peer_certificate(connection->ssl_s);
 407     if (!cert)
 408     {
 409         ERR("no certificate for server %s\n", debugstr_w(hostname));
 410         /* FIXME: is this the best error? */
 411         INTERNET_SetLastError(ERROR_INTERNET_INVALID_CA);
 412         goto fail;
 413     }
 414     verify_res = pSSL_get_verify_result(connection->ssl_s);
 415     if (verify_res != X509_V_OK)
 416     {
 417         ERR("couldn't verify the security of the connection, %ld\n", verify_res);
 418         /* FIXME: we should set an error and return, but we only warn at
 419          * the moment */
 420     }
 421
 422     len = WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, NULL, 0, NULL, NULL);
 423     hostname_unix = HeapAlloc(GetProcessHeap(), 0, len);
 424     if (!hostname_unix)
 425     {
 426         INTERNET_SetLastError(ERROR_OUTOFMEMORY);
 427         goto fail;
 428     }
 429     WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, hostname_unix, len, NULL, NULL);
 430
 431     if (!check_hostname(cert, hostname_unix))
 432     {
 433         HeapFree(GetProcessHeap(), 0, hostname_unix);
 434         INTERNET_SetLastError(ERROR_INTERNET_SEC_CERT_CN_INVALID);
 435         goto fail;
 436     }
 437
 438     HeapFree(GetProcessHeap(), 0, hostname_unix);
 439     connection->useSSL = TRUE;
 440     return TRUE;
 441
 442 fail:
 443     if (connection->ssl_s)
 444     {
 445         pSSL_shutdown(connection->ssl_s);
 446         pSSL_free(connection->ssl_s);
 447         connection->ssl_s = NULL;
 448     }
 449 #endif
 450     return FALSE;
 451 }
 452
 453 /******************************************************************************
 454  * NETCON_connect
 455  * Connects to the specified address.
 456  */
 457 BOOL NETCON_connect(WININET_NETCONNECTION *connection, const struct sockaddr *serv_addr,
 458                     unsigned int addrlen)
 459 {
 460     int result;
 461
 462     if (!NETCON_connected(connection)) return FALSE;
 463
 464     result = connect(connection->socketFD, serv_addr, addrlen);
 465     if (result == -1)
 466     {
 467         WARN("Unable to connect to host (%s)\n", strerror(errno));
 468         INTERNET_SetLastError(sock_get_error(errno));
 469
 470         closesocket(connection->socketFD);
 471         connection->socketFD = -1;
 472         return FALSE;
 473     }
 474
 475     return TRUE;
 476 }
 477
 478 /******************************************************************************
 479  * NETCON_send
 480  * Basically calls 'send()' unless we should use SSL
 481  * number of chars send is put in *sent
 482  */
 483 BOOL NETCON_send(WININET_NETCONNECTION *connection, const void *msg, size_t len, int flags,
 484                 int *sent /* out */)
 485 {
 486     if (!NETCON_connected(connection)) return FALSE;
 487     if (!connection->useSSL)
 488     {
 489         *sent = send(connection->socketFD, msg, len, flags);
 490         if (*sent == -1)
 491         {
 492             INTERNET_SetLastError(sock_get_error(errno));
 493             return FALSE;
 494         }
 495         return TRUE;
 496     }
 497     else
 498     {
 499 #ifdef SONAME_LIBSSL
 500         if (flags)
 501             FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
 502         *sent = pSSL_write(connection->ssl_s, msg, len);
 503         if (*sent < 1 && len)
 504             return FALSE;
 505         return TRUE;
 506 #else
 507         return FALSE;
 508 #endif
 509     }
 510 }
 511
 512 /******************************************************************************
 513  * NETCON_recv
 514  * Basically calls 'recv()' unless we should use SSL
 515  * number of chars received is put in *recvd
 516  */
 517 BOOL NETCON_recv(WININET_NETCONNECTION *connection, void *buf, size_t len, int flags,
 518                 int *recvd /* out */)
 519 {
 520     *recvd = 0;
 521     if (!NETCON_connected(connection)) return FALSE;
 522     if (!len)
 523         return TRUE;
 524     if (!connection->useSSL)
 525     {
 526         *recvd = recv(connection->socketFD, buf, len, flags);
 527         if (*recvd == -1)
 528         {
 529             INTERNET_SetLastError(sock_get_error(errno));
 530             return FALSE;
 531         }
 532         return TRUE;
 533     }
 534     else
 535     {
 536 #ifdef SONAME_LIBSSL
 537         *recvd = pSSL_read(connection->ssl_s, buf, len);
 538         return *recvd > 0 || !len;
 539 #else
 540         return FALSE;
 541 #endif
 542     }
 543 }
 544
 545 /******************************************************************************
 546  * NETCON_query_data_available
 547  * Returns the number of bytes of peeked data plus the number of bytes of
 548  * queued, but unread data.
 549  */
 550 BOOL NETCON_query_data_available(WININET_NETCONNECTION *connection, DWORD *available)
 551 {
 552     *available = 0;
 553     if (!NETCON_connected(connection))
 554         return FALSE;
 555
 556     if (!connection->useSSL)
 557     {
 558 #ifdef FIONREAD
 559         int unread;
 560         int retval = ioctlsocket(connection->socketFD, FIONREAD, &unread);
 561         if (!retval)
 562         {
 563             TRACE("%d bytes of queued, but unread data\n", unread);
 564             *available += unread;
 565         }
 566 #endif
 567     }
 568     else
 569     {
 570 #ifdef SONAME_LIBSSL
 571         *available = pSSL_pending(connection->ssl_s);
 572 #endif
 573     }
 574     return TRUE;
 575 }
 576
 577 LPCVOID NETCON_GetCert(WININET_NETCONNECTION *connection)
 578 {
 579 #ifdef SONAME_LIBSSL
 580     X509* cert;
 581     unsigned char* buffer,*p;
 582     INT len;
 583     BOOL malloced = FALSE;
 584     LPCVOID r = NULL;
 585
 586     if (!connection->useSSL)
 587         return NULL;
 588
 589     cert = pSSL_get_peer_certificate(connection->ssl_s);
 590     p = NULL;
 591     len = pi2d_X509(cert,&p);
 592     /*
 593      * SSL 0.9.7 and above malloc the buffer if it is null.
 594      * however earlier version do not and so we would need to alloc the buffer.
 595      *
 596      * see the i2d_X509 man page for more details.
 597      */
 598     if (!p)
 599     {
 600         buffer = HeapAlloc(GetProcessHeap(),0,len);
 601         p = buffer;
 602         len = pi2d_X509(cert,&p);
 603     }
 604     else
 605     {
 606         buffer = p;
 607         malloced = TRUE;
 608     }
 609
 610     r = CertCreateCertificateContext(X509_ASN_ENCODING,buffer,len);
 611
 612     if (malloced)
 613         free(buffer);
 614     else
 615         HeapFree(GetProcessHeap(),0,buffer);
 616
 617     return r;
 618 #else
 619     return NULL;
 620 #endif
 621 }
 622
 623 DWORD NETCON_set_timeout(WININET_NETCONNECTION *connection, BOOL send, int value)
 624 {
 625     int result;
 626     struct timeval tv;
 627
 628     /* FIXME: we should probably store the timeout in the connection to set
 629      * when we do connect */
 630     if (!NETCON_connected(connection))
 631         return ERROR_SUCCESS;
 632
 633     /* value is in milliseconds, convert to struct timeval */
 634     tv.tv_sec = value / 1000;
 635     tv.tv_usec = (value % 1000) * 1000;
 636
 637     result = setsockopt(connection->socketFD, SOL_SOCKET,
 638                         send ? SO_SNDTIMEO : SO_RCVTIMEO, (void*)&tv,
 639                         sizeof(tv));
 640
 641     if (result == -1)
 642     {
 643         WARN("setsockopt failed (%s)\n", strerror(errno));
 644         return sock_get_error(errno);
 645     }
 646
 647     return ERROR_SUCCESS;
 648 }