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Sweden-Number/dlls/wininet/netconnection.c

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/*
* Wininet - networking layer. Uses unix sockets or OpenSSL.
*
* Copyright 2002 TransGaming Technologies Inc.
*
* David Hammerton
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdlib.h>
#include <string.h>
#include "wine/library.h"
#include "windef.h"
#include "winbase.h"
#include "wininet.h"
#include "winerror.h"
#include "wine/debug.h"
#include "internet.h"
#define RESPONSE_TIMEOUT 30 /* FROM internet.c */
WINE_DEFAULT_DEBUG_CHANNEL(wininet);
/* FIXME!!!!!!
* This should use winsock - To use winsock the funtions will have to change a bit
* as they are designed for unix sockets.
* SSL stuff should use crypt32.dll
*/
#ifdef HAVE_OPENSSL_SSL_H
#ifndef SONAME_LIBSSL
#define SONAME_LIBSSL "libssl.so"
#endif
#ifndef SONAME_LIBCRYPTO
#define SONAME_LIBCRYPTO "libcrypto.so"
#endif
static void *OpenSSL_ssl_handle;
static void *OpenSSL_crypto_handle;
static SSL_METHOD *meth;
static SSL_CTX *ctx;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
/* OpenSSL funtions that we use */
MAKE_FUNCPTR(SSL_library_init);
MAKE_FUNCPTR(SSL_load_error_strings);
MAKE_FUNCPTR(SSLv23_method);
MAKE_FUNCPTR(SSL_CTX_new);
MAKE_FUNCPTR(SSL_new);
MAKE_FUNCPTR(SSL_set_bio);
MAKE_FUNCPTR(SSL_connect);
MAKE_FUNCPTR(SSL_write);
MAKE_FUNCPTR(SSL_read);
MAKE_FUNCPTR(SSL_CTX_get_timeout);
MAKE_FUNCPTR(SSL_CTX_set_timeout);
/* OpenSSL's libcrypto functions that we use */
MAKE_FUNCPTR(BIO_new_socket);
MAKE_FUNCPTR(BIO_new_fp);
#undef MAKE_FUNCPTR
#endif
void NETCON_init(WININET_NETCONNECTION *connection, BOOL useSSL)
{
connection->useSSL = useSSL;
connection->socketFD = -1;
if (connection->useSSL)
{
#ifdef HAVE_OPENSSL_SSL_H
TRACE("using SSL connection\n");
connection->ssl_sock = -1;
if (OpenSSL_ssl_handle) /* already initilzed everything */
return;
OpenSSL_ssl_handle = wine_dlopen(SONAME_LIBSSL, RTLD_NOW, NULL, 0);
if (!OpenSSL_ssl_handle)
{
ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
SONAME_LIBSSL);
connection->useSSL = FALSE;
return;
}
OpenSSL_crypto_handle = wine_dlopen(SONAME_LIBCRYPTO, RTLD_NOW, NULL, 0);
if (!OpenSSL_crypto_handle)
{
ERR("trying to use a SSL connection, but couldn't load %s. Expect trouble.\n",
SONAME_LIBCRYPTO);
connection->useSSL = FALSE;
return;
}
/* mmm nice ugly macroness */
#define DYNSSL(x) \
p##x = wine_dlsym(OpenSSL_ssl_handle, #x, NULL, 0); \
if (!p##x) \
{ \
ERR("failed to load symbol %s\n", #x); \
connection->useSSL = FALSE; \
return; \
}
DYNSSL(SSL_library_init);
DYNSSL(SSL_load_error_strings);
DYNSSL(SSLv23_method);
DYNSSL(SSL_CTX_new);
DYNSSL(SSL_new);
DYNSSL(SSL_set_bio);
DYNSSL(SSL_connect);
DYNSSL(SSL_write);
DYNSSL(SSL_read);
DYNSSL(SSL_CTX_get_timeout);
DYNSSL(SSL_CTX_set_timeout);
#undef DYNSSL
#define DYNCRYPTO(x) \
p##x = wine_dlsym(OpenSSL_crypto_handle, #x, NULL, 0); \
if (!p##x) \
{ \
ERR("failed to load symbol %s\n", #x); \
connection->useSSL = FALSE; \
return; \
}
DYNCRYPTO(BIO_new_fp);
DYNCRYPTO(BIO_new_socket);
#undef DYNCRYPTO
pSSL_library_init();
pSSL_load_error_strings();
pBIO_new_fp(stderr, BIO_NOCLOSE); /* FIXME: should use winedebug stuff */
meth = pSSLv23_method();
/* FIXME: SECURITY PROBLEM! WE ARN'T VERIFYING THE HOSTS CERTIFICATES OR ANYTHING */
#else
FIXME("can't use SSL, not compiled in.\n");
connection->useSSL = FALSE;
#endif
}
}
BOOL NETCON_connected(WININET_NETCONNECTION *connection)
{
if (!connection->useSSL)
{
if (connection->socketFD == -1)
return FALSE;
return TRUE;
}
else
{
#ifdef HAVE_OPENSSL_SSL_H
if (connection->ssl_sock == -1)
return FALSE;
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_create
* Basically calls 'socket()' unless useSSL is supplised,
* in which case we do other things.
*/
BOOL NETCON_create(WININET_NETCONNECTION *connection, int domain,
int type, int protocol)
{
if (!connection->useSSL)
{
connection->socketFD = socket(domain, type, protocol);
if (connection->socketFD == -1)
return FALSE;
return TRUE;
}
else
{
#ifdef HAVE_OPENSSL_SSL_H
connection->ssl_sock = socket(domain, type, protocol);
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_close
* Basically calls 'close()' unless we should use SSL
*/
BOOL NETCON_close(WININET_NETCONNECTION *connection)
{
if (!NETCON_connected) return FALSE;
if (!connection->useSSL)
{
int result;
result = close(connection->socketFD);
connection->socketFD = -1;
if (result == -1)
return FALSE;
return TRUE;
}
else
{
#ifdef HAVE_OPENSSL_SSL_H
close(connection->ssl_sock);
connection->ssl_sock = -1;
/* FIXME should we call SSL_shutdown here?? Probably on whatever is the
* opposite of NETCON_init.... */
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_connect
* Basically calls 'connect()' unless we should use SSL
*/
BOOL NETCON_connect(WININET_NETCONNECTION *connection, const struct sockaddr *serv_addr,
socklen_t addrlen)
{
if (!NETCON_connected) return FALSE;
if (!connection->useSSL)
{
int result;
result = connect(connection->socketFD, serv_addr, addrlen);
if (result == -1)
return FALSE;
return TRUE;
}
else
{
#ifdef HAVE_OPENSSL_SSL_H
BIO *sbio;
ctx = pSSL_CTX_new(meth);
connection->ssl_s = pSSL_new(ctx);
if (connect(connection->ssl_sock, serv_addr, addrlen) == -1)
return FALSE;
sbio = pBIO_new_socket(connection->ssl_sock, BIO_NOCLOSE);
pSSL_set_bio(connection->ssl_s, sbio, sbio);
if (pSSL_connect(connection->ssl_s) <= 0)
{
ERR("ssl couldn't connect\n");
return FALSE;
}
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_send
* Basically calls 'send()' unless we should use SSL
* number of chars send is put in *sent
*/
BOOL NETCON_send(WININET_NETCONNECTION *connection, const void *msg, size_t len, int flags,
int *sent /* out */)
{
if (!NETCON_connected) return FALSE;
if (!connection->useSSL)
{
*sent = send(connection->socketFD, msg, len, flags);
if (*sent == -1)
return FALSE;
return TRUE;
}
else
{
#ifdef HAVE_OPENSSL_SSL_H
if (flags)
FIXME("SSL_write doesn't support any flags (%08x)\n", flags);
*sent = pSSL_write(connection->ssl_s, msg, len);
if (*sent < 1 && len)
return FALSE;
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_recv
* Basically calls 'recv()' unless we should use SSL
* number of chars receieved is put in *recvd
*/
BOOL NETCON_recv(WININET_NETCONNECTION *connection, void *buf, size_t len, int flags,
int *recvd /* out */)
{
if (!NETCON_connected) return FALSE;
if (!connection->useSSL)
{
*recvd = recv(connection->socketFD, buf, len, flags);
if (*recvd == -1)
return FALSE;
return TRUE;
}
else
{
#ifdef HAVE_OPENSSL_SSL_H
static char *peek_msg = NULL;
static char *peek_msg_mem = NULL;
if (flags & (~MSG_PEEK))
FIXME("SSL_read does not support the following flag: %08x\n", flags);
/* this ugly hack is all for MSG_PEEK. eww gross */
if (flags & MSG_PEEK && !peek_msg)
{
peek_msg = peek_msg_mem = HeapAlloc(GetProcessHeap(), 0, (sizeof(char) * len) + 1);
}
else if (flags & MSG_PEEK && peek_msg)
{
if (len < strlen(peek_msg))
FIXME("buffer isn't big enough. Do the expect us to wrap?\n");
strncpy(buf, peek_msg, len);
*recvd = (strlen(peek_msg) <= len ? strlen(peek_msg) : len);
return TRUE;
}
else if (peek_msg)
{
strncpy(buf, peek_msg, len);
peek_msg += *recvd = min(len, strlen(peek_msg));
if (*peek_msg == '\0' || *(peek_msg - 1) == '\0')
{
HeapFree(GetProcessHeap(), 0, peek_msg_mem);
peek_msg_mem = NULL;
peek_msg = NULL;
}
return TRUE;
}
*recvd = pSSL_read(connection->ssl_s, buf, len);
if (flags & MSG_PEEK) /* must copy stuff into buffer */
{
if (!*recvd)
{
HeapFree(GetProcessHeap(), 0, peek_msg_mem);
peek_msg_mem = NULL;
peek_msg = NULL;
}
else
{
strncpy(peek_msg, buf, *recvd);
peek_msg[*recvd] = '\0';
}
}
if (*recvd < 1 && len)
return FALSE;
return TRUE;
#else
return FALSE;
#endif
}
}
/******************************************************************************
* NETCON_getNextLine
*/
BOOL NETCON_getNextLine(WININET_NETCONNECTION *connection, LPSTR lpszBuffer, LPDWORD dwBuffer)
{
TRACE("\n");
if (!NETCON_connected(connection)) return FALSE;
if (!connection->useSSL)
{
struct timeval tv;
fd_set infd;
BOOL bSuccess = FALSE;
INT nRecv = 0;
FD_ZERO(&infd);
FD_SET(connection->socketFD, &infd);
tv.tv_sec=RESPONSE_TIMEOUT;
tv.tv_usec=0;
while (nRecv < *dwBuffer)
{
if (select(connection->socketFD+1,&infd,NULL,NULL,&tv) > 0)
{
if (recv(connection->socketFD, &lpszBuffer[nRecv], 1, 0) <= 0)
{
INTERNET_SetLastError(ERROR_CONNECTION_ABORTED); /* fixme: right error? */
goto lend;
}
if (lpszBuffer[nRecv] == '\n')
{
bSuccess = TRUE;
break;
}
if (lpszBuffer[nRecv] != '\r')
nRecv++;
}
else
{
INTERNET_SetLastError(ERROR_INTERNET_TIMEOUT);
goto lend;
}
}
lend: /* FIXME: don't use labels */
if (bSuccess)
{
lpszBuffer[nRecv] = '\0';
*dwBuffer = nRecv - 1;
TRACE(":%d %s\n", nRecv, lpszBuffer);
return TRUE;
}
else
{
return FALSE;
}
}
else
{
#ifdef HAVE_OPENSSL_SSL_H
long prev_timeout;
INT nRecv = 0;
BOOL success = TRUE;
prev_timeout = pSSL_CTX_get_timeout(ctx);
pSSL_CTX_set_timeout(ctx, RESPONSE_TIMEOUT);
while (nRecv < *dwBuffer)
{
int recv = 1;
if (!NETCON_recv(connection, &lpszBuffer[nRecv], 1, 0, &recv))
{
INTERNET_SetLastError(ERROR_CONNECTION_ABORTED);
success = FALSE;
}
if (lpszBuffer[nRecv] == '\n')
{
success = TRUE;
break;
}
if (lpszBuffer[nRecv] != '\r')
nRecv++;
}
pSSL_CTX_set_timeout(ctx, prev_timeout);
if (success)
{
lpszBuffer[nRecv] = '\0';
*dwBuffer = nRecv - 1;
TRACE("_SSL:%d %s\n", nRecv, lpszBuffer);
return TRUE;
}
return FALSE;
#else
return FALSE;
#endif
}
}
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