575 lines
15 KiB
C
575 lines
15 KiB
C
/*
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* Wininet - networking layer. Uses unix sockets or OpenSSL.
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*
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* Copyright 2002 TransGaming Technologies Inc.
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*
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* David Hammerton
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#include <sys/types.h>
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include "wine/library.h"
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#include "windef.h"
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#include "winbase.h"
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#include "wininet.h"
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#include "winerror.h"
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#include "wine/debug.h"
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#include "internet.h"
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#define RESPONSE_TIMEOUT 30 /* FROM internet.c */
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WINE_DEFAULT_DEBUG_CHANNEL(wininet);
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/* FIXME!!!!!!
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* This should use winsock - To use winsock the functions will have to change a bit
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* as they are designed for unix sockets.
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* SSL stuff should use crypt32.dll
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*/
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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#include <openssl/err.h>
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#ifndef SONAME_LIBSSL
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#define SONAME_LIBSSL "libssl.so"
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#endif
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#ifndef SONAME_LIBCRYPTO
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#define SONAME_LIBCRYPTO "libcrypto.so"
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#endif
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static void *OpenSSL_ssl_handle;
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static void *OpenSSL_crypto_handle;
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static SSL_METHOD *meth;
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static SSL_CTX *ctx;
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#define MAKE_FUNCPTR(f) static typeof(f) * p##f
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/* OpenSSL functions that we use */
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MAKE_FUNCPTR(SSL_library_init);
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MAKE_FUNCPTR(SSL_load_error_strings);
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MAKE_FUNCPTR(SSLv23_method);
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MAKE_FUNCPTR(SSL_CTX_new);
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MAKE_FUNCPTR(SSL_new);
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MAKE_FUNCPTR(SSL_free);
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MAKE_FUNCPTR(SSL_set_fd);
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MAKE_FUNCPTR(SSL_connect);
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MAKE_FUNCPTR(SSL_shutdown);
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MAKE_FUNCPTR(SSL_write);
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MAKE_FUNCPTR(SSL_read);
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MAKE_FUNCPTR(SSL_get_verify_result);
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MAKE_FUNCPTR(SSL_get_peer_certificate);
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MAKE_FUNCPTR(SSL_CTX_get_timeout);
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MAKE_FUNCPTR(SSL_CTX_set_timeout);
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MAKE_FUNCPTR(SSL_CTX_set_default_verify_paths);
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/* OpenSSL's libcrypto functions that we use */
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MAKE_FUNCPTR(BIO_new_fp);
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MAKE_FUNCPTR(ERR_get_error);
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MAKE_FUNCPTR(ERR_error_string);
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#undef MAKE_FUNCPTR
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#endif
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void NETCON_init(WININET_NETCONNECTION *connection, BOOL useSSL)
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{
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connection->useSSL = FALSE;
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connection->socketFD = -1;
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if (useSSL)
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{
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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TRACE("using SSL connection\n");
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if (OpenSSL_ssl_handle) /* already initilzed everything */
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return;
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OpenSSL_ssl_handle = wine_dlopen(SONAME_LIBSSL, RTLD_NOW, NULL, 0);
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if (!OpenSSL_ssl_handle)
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{
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ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
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SONAME_LIBSSL);
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connection->useSSL = FALSE;
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return;
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}
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OpenSSL_crypto_handle = wine_dlopen(SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0);
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if (!OpenSSL_crypto_handle)
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{
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ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
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SONAME_LIBCRYPTO);
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connection->useSSL = FALSE;
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return;
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}
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/* mmm nice ugly macroness */
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#define DYNSSL(x) \
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p##x = wine_dlsym(OpenSSL_ssl_handle, #x, NULL, 0); \
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if (!p##x) \
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{ \
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ERR("failed to load symbol %s\n", #x); \
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connection->useSSL = FALSE; \
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return; \
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}
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DYNSSL(SSL_library_init);
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DYNSSL(SSL_load_error_strings);
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DYNSSL(SSLv23_method);
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DYNSSL(SSL_CTX_new);
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DYNSSL(SSL_new);
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DYNSSL(SSL_free);
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DYNSSL(SSL_set_fd);
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DYNSSL(SSL_connect);
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DYNSSL(SSL_shutdown);
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DYNSSL(SSL_write);
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DYNSSL(SSL_read);
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DYNSSL(SSL_get_verify_result);
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DYNSSL(SSL_get_peer_certificate);
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DYNSSL(SSL_CTX_get_timeout);
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DYNSSL(SSL_CTX_set_timeout);
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DYNSSL(SSL_CTX_set_default_verify_paths);
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#undef DYNSSL
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#define DYNCRYPTO(x) \
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p##x = wine_dlsym(OpenSSL_crypto_handle, #x, NULL, 0); \
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if (!p##x) \
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{ \
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ERR("failed to load symbol %s\n", #x); \
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connection->useSSL = FALSE; \
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return; \
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}
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DYNCRYPTO(BIO_new_fp);
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DYNCRYPTO(ERR_get_error);
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DYNCRYPTO(ERR_error_string);
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#undef DYNCRYPTO
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pSSL_library_init();
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pSSL_load_error_strings();
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pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
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meth = pSSLv23_method();
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connection->peek_msg = NULL;
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connection->peek_msg_mem = NULL;
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#else
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FIXME("can't use SSL, not compiled in.\n");
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connection->useSSL = FALSE;
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#endif
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}
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}
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BOOL NETCON_connected(WININET_NETCONNECTION *connection)
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{
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if (connection->socketFD == -1)
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return FALSE;
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else
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return TRUE;
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}
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/******************************************************************************
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* NETCON_create
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* Basically calls 'socket()'
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*/
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BOOL NETCON_create(WININET_NETCONNECTION *connection, int domain,
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int type, int protocol)
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{
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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if (connection->useSSL)
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return FALSE;
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#endif
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connection->socketFD = socket(domain, type, protocol);
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if (connection->socketFD == -1)
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return FALSE;
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return TRUE;
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}
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/******************************************************************************
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* NETCON_close
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* Basically calls 'close()' unless we should use SSL
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*/
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BOOL NETCON_close(WININET_NETCONNECTION *connection)
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{
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int result;
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if (!NETCON_connected(connection)) return FALSE;
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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if (connection->useSSL)
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{
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HeapFree(GetProcessHeap(),0,connection->peek_msg_mem);
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connection->peek_msg = NULL;
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connection->peek_msg_mem = NULL;
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pSSL_shutdown(connection->ssl_s);
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pSSL_free(connection->ssl_s);
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connection->ssl_s = NULL;
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connection->useSSL = FALSE;
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}
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#endif
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result = closesocket(connection->socketFD);
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connection->socketFD = -1;
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if (result == -1)
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return FALSE;
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return TRUE;
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}
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static BOOL check_hostname(X509 *cert, char *hostname)
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{
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/* FIXME: implement */
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return TRUE;
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}
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/******************************************************************************
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* NETCON_secure_connect
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* Initiates a secure connection over an existing plaintext connection.
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*/
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BOOL NETCON_secure_connect(WININET_NETCONNECTION *connection, LPCWSTR hostname)
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{
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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long verify_res;
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X509 *cert;
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int len;
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char *hostname_unix;
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/* can't connect if we are already connected */
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if (connection->useSSL)
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{
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ERR("already connected\n");
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return FALSE;
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}
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ctx = pSSL_CTX_new(meth);
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if (!pSSL_CTX_set_default_verify_paths(ctx))
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{
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ERR("SSL_CTX_set_default_verify_paths failed: %s\n",
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pERR_error_string(pERR_get_error(), 0));
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return FALSE;
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}
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connection->ssl_s = pSSL_new(ctx);
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if (!connection->ssl_s)
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{
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ERR("SSL_new failed: %s\n",
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pERR_error_string(pERR_get_error(), 0));
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goto fail;
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}
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if (!pSSL_set_fd(connection->ssl_s, connection->socketFD))
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{
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ERR("SSL_set_fd failed: %s\n",
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pERR_error_string(pERR_get_error(), 0));
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goto fail;
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}
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if (pSSL_connect(connection->ssl_s) <= 0)
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{
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ERR("SSL_connect failed: %s\n",
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pERR_error_string(pERR_get_error(), 0));
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INTERNET_SetLastError(ERROR_INTERNET_SECURITY_CHANNEL_ERROR);
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goto fail;
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}
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cert = pSSL_get_peer_certificate(connection->ssl_s);
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if (!cert)
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{
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ERR("no certificate for server %s\n", debugstr_w(hostname));
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/* FIXME: is this the best error? */
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INTERNET_SetLastError(ERROR_INTERNET_INVALID_CA);
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goto fail;
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}
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verify_res = pSSL_get_verify_result(connection->ssl_s);
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if (verify_res != X509_V_OK)
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{
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ERR("couldn't verify the security of the connection, %ld\n", verify_res);
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/* FIXME: we should set an error and return, but we only warn at
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* the moment */
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}
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len = WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, NULL, 0, NULL, NULL);
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hostname_unix = HeapAlloc(GetProcessHeap(), 0, len);
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if (!hostname_unix)
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{
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INTERNET_SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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goto fail;
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}
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WideCharToMultiByte(CP_UNIXCP, 0, hostname, -1, hostname_unix, len, NULL, NULL);
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if (!check_hostname(cert, hostname_unix))
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{
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HeapFree(GetProcessHeap(), 0, hostname_unix);
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INTERNET_SetLastError(ERROR_INTERNET_SEC_CERT_CN_INVALID);
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goto fail;
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}
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HeapFree(GetProcessHeap(), 0, hostname_unix);
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connection->useSSL = TRUE;
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return TRUE;
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fail:
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if (connection->ssl_s)
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{
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pSSL_shutdown(connection->ssl_s);
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pSSL_free(connection->ssl_s);
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connection->ssl_s = NULL;
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}
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#endif
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return FALSE;
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}
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/******************************************************************************
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* NETCON_connect
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* Connects to the specified address.
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*/
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BOOL NETCON_connect(WININET_NETCONNECTION *connection, const struct sockaddr *serv_addr,
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unsigned int addrlen)
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{
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int result;
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if (!NETCON_connected(connection)) return FALSE;
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result = connect(connection->socketFD, serv_addr, addrlen);
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if (result == -1)
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{
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closesocket(connection->socketFD);
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connection->socketFD = -1;
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return FALSE;
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}
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return TRUE;
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}
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/******************************************************************************
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* NETCON_send
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* Basically calls 'send()' unless we should use SSL
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* number of chars send is put in *sent
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*/
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BOOL NETCON_send(WININET_NETCONNECTION *connection, const void *msg, size_t len, int flags,
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int *sent /* out */)
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{
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if (!NETCON_connected(connection)) return FALSE;
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if (!connection->useSSL)
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{
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*sent = send(connection->socketFD, msg, len, flags);
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if (*sent == -1)
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return FALSE;
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return TRUE;
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}
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else
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{
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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if (flags)
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FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
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*sent = pSSL_write(connection->ssl_s, msg, len);
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if (*sent < 1 && len)
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return FALSE;
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return TRUE;
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#else
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return FALSE;
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#endif
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}
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}
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/******************************************************************************
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* NETCON_recv
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* Basically calls 'recv()' unless we should use SSL
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* number of chars received is put in *recvd
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*/
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BOOL NETCON_recv(WININET_NETCONNECTION *connection, void *buf, size_t len, int flags,
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int *recvd /* out */)
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{
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if (!NETCON_connected(connection)) return FALSE;
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if (!connection->useSSL)
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{
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*recvd = recv(connection->socketFD, buf, len, flags);
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if (*recvd == -1)
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return FALSE;
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return TRUE;
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}
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else
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{
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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if (flags & (~MSG_PEEK))
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FIXME("SSL_read does not support the following flag: %08x\n", flags);
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/* this ugly hack is all for MSG_PEEK. eww gross */
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if (flags & MSG_PEEK && !connection->peek_msg)
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{
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connection->peek_msg = connection->peek_msg_mem = HeapAlloc(GetProcessHeap(), 0, (sizeof(char) * len) + 1);
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}
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else if (flags & MSG_PEEK && connection->peek_msg)
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{
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size_t peek_msg_len = strlen(connection->peek_msg);
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if (len < peek_msg_len)
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FIXME("buffer isn't big enough. Do the expect us to wrap?\n");
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memcpy(buf, connection->peek_msg, min(len,peek_msg_len+1));
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*recvd = min(len, peek_msg_len);
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return TRUE;
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}
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else if (connection->peek_msg)
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{
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size_t peek_msg_len = strlen(connection->peek_msg);
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memcpy(buf, connection->peek_msg, min(len,peek_msg_len+1));
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connection->peek_msg += *recvd = min(len, peek_msg_len);
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if (*connection->peek_msg == '\0' || *(connection->peek_msg - 1) == '\0')
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{
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HeapFree(GetProcessHeap(), 0, connection->peek_msg_mem);
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connection->peek_msg_mem = NULL;
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connection->peek_msg = NULL;
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}
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return TRUE;
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}
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*recvd = pSSL_read(connection->ssl_s, buf, len);
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if (flags & MSG_PEEK) /* must copy stuff into buffer */
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{
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if (!*recvd)
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{
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HeapFree(GetProcessHeap(), 0, connection->peek_msg_mem);
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connection->peek_msg_mem = NULL;
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connection->peek_msg = NULL;
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}
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else
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{
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memcpy(connection->peek_msg, buf, *recvd);
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connection->peek_msg[*recvd] = '\0';
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}
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}
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if (*recvd < 1 && len)
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return FALSE;
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return TRUE;
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#else
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return FALSE;
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#endif
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}
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}
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/******************************************************************************
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* NETCON_getNextLine
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*/
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BOOL NETCON_getNextLine(WININET_NETCONNECTION *connection, LPSTR lpszBuffer, LPDWORD dwBuffer)
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{
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TRACE("\n");
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if (!NETCON_connected(connection)) return FALSE;
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if (!connection->useSSL)
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{
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struct timeval tv;
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fd_set infd;
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BOOL bSuccess = FALSE;
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DWORD nRecv = 0;
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FD_ZERO(&infd);
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FD_SET(connection->socketFD, &infd);
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tv.tv_sec=RESPONSE_TIMEOUT;
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tv.tv_usec=0;
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while (nRecv < *dwBuffer)
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{
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if (select(connection->socketFD+1,&infd,NULL,NULL,&tv) > 0)
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{
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if (recv(connection->socketFD, &lpszBuffer[nRecv], 1, 0) <= 0)
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{
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INTERNET_SetLastError(ERROR_CONNECTION_ABORTED); /* fixme: right error? */
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goto lend;
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}
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if (lpszBuffer[nRecv] == '\n')
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{
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bSuccess = TRUE;
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break;
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}
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if (lpszBuffer[nRecv] != '\r')
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nRecv++;
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}
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else
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{
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INTERNET_SetLastError(ERROR_INTERNET_TIMEOUT);
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goto lend;
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}
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}
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lend: /* FIXME: don't use labels */
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if (bSuccess)
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{
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lpszBuffer[nRecv++] = '\0';
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*dwBuffer = nRecv;
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TRACE(":%lu %s\n", nRecv, lpszBuffer);
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return TRUE;
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}
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else
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{
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return FALSE;
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}
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}
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else
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{
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#if defined HAVE_OPENSSL_SSL_H && defined HAVE_OPENSSL_ERR_H
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long prev_timeout;
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DWORD nRecv = 0;
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BOOL success = TRUE;
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prev_timeout = pSSL_CTX_get_timeout(ctx);
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pSSL_CTX_set_timeout(ctx, RESPONSE_TIMEOUT);
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while (nRecv < *dwBuffer)
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{
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int recv = 1;
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if (!NETCON_recv(connection, &lpszBuffer[nRecv], 1, 0, &recv))
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{
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INTERNET_SetLastError(ERROR_CONNECTION_ABORTED);
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success = FALSE;
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}
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if (lpszBuffer[nRecv] == '\n')
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{
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success = TRUE;
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break;
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}
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if (lpszBuffer[nRecv] != '\r')
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nRecv++;
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}
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pSSL_CTX_set_timeout(ctx, prev_timeout);
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if (success)
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{
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lpszBuffer[nRecv++] = '\0';
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*dwBuffer = nRecv;
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TRACE("_SSL:%lu %s\n", nRecv, lpszBuffer);
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return TRUE;
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}
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return FALSE;
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#else
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return FALSE;
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#endif
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}
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}
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