Sweden-Number/dlls/mswsock/mswsock.c

169 lines
5.8 KiB
C

/*
* MSWSOCK specific functions
*
* Copyright (C) 2003 André Johansen
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winsock2.h"
#include "mswsock.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(mswsock);
static LPFN_ACCEPTEX acceptex_fn;
static LPFN_GETACCEPTEXSOCKADDRS acceptexsockaddrs_fn;
static LPFN_TRANSMITFILE transmitfile_fn;
static BOOL initialised;
/* Get pointers to the ws2_32 implementations.
* NOTE: This assumes that ws2_32 contains only one implementation
* of these functions, i.e. that you cannot get different functions
* back by passing another socket in. If that ever changes, we'll need
* to think about associating the functions with the socket and
* exposing that information to this dll somehow.
*/
static void get_fn(SOCKET s, GUID* guid, FARPROC* fn)
{
FARPROC func;
DWORD len;
if (!WSAIoctl(s, SIO_GET_EXTENSION_FUNCTION_POINTER, guid, sizeof(*guid),
&func, sizeof(func), &len, NULL, NULL))
*fn = func;
}
static void get_fn_pointers(SOCKET s)
{
GUID acceptex_guid = WSAID_ACCEPTEX;
GUID acceptexsockaddrs_guid = WSAID_GETACCEPTEXSOCKADDRS;
GUID transmitfile_guid = WSAID_TRANSMITFILE;
get_fn(s, &acceptex_guid, (FARPROC*)&acceptex_fn);
get_fn(s, &acceptexsockaddrs_guid, (FARPROC*)&acceptexsockaddrs_fn);
get_fn(s, &transmitfile_guid, (FARPROC*)&transmitfile_fn);
initialised = TRUE;
}
/***********************************************************************
* AcceptEx (MSWSOCK.@)
*
* Accept a new connection, retrieving the connected addresses and initial data.
*
* listener [I] Listening socket
* acceptor [I] Socket to accept on
* dest [O] Destination for initial data
* dest_len [I] Size of dest in bytes
* local_addr_len [I] Number of bytes reserved in dest for local address
* rem_addr_len [I] Number of bytes reserved in dest for remote address
* received [O] Destination for number of bytes of initial data
* overlapped [I] For asynchronous execution
*
* RETURNS
* Success: TRUE
* Failure: FALSE. Use WSAGetLastError() for details of the error.
*/
BOOL WINAPI AcceptEx(SOCKET listener, SOCKET acceptor, PVOID dest, DWORD dest_len,
DWORD local_addr_len, DWORD rem_addr_len, LPDWORD received,
LPOVERLAPPED overlapped)
{
if (!initialised)
get_fn_pointers(acceptor);
if (!acceptex_fn)
return FALSE;
return acceptex_fn(listener, acceptor, dest, dest_len, local_addr_len,
rem_addr_len, received, overlapped);
}
/***********************************************************************
* GetAcceptExSockaddrs (MSWSOCK.@)
*
* Get information about an accepted socket.
*
* data [O] Destination for the first block of data from AcceptEx()
* data_len [I] length of data in bytes
* local_len [I] Bytes reserved for local addrinfo
* rem_len [I] Bytes reserved for remote addrinfo
* local_addr [O] Destination for local sockaddr
* local_addr_len [I] Size of local_addr
* rem_addr [O] Destination for remote sockaddr
* rem_addr_len [I] Size of rem_addr
*
* RETURNS
* Nothing.
*/
VOID WINAPI GetAcceptExSockaddrs(PVOID data, DWORD data_len, DWORD local_len, DWORD rem_len,
struct sockaddr **local_addr, LPINT local_addr_len,
struct sockaddr **rem_addr, LPINT rem_addr_len)
{
if (acceptexsockaddrs_fn)
acceptexsockaddrs_fn(data, data_len, local_len, rem_len,
local_addr, local_addr_len, rem_addr, rem_addr_len);
}
/***********************************************************************
* TransmitFile (MSWSOCK.@)
*
* Transmit a file over a socket.
*
* PARAMS
* s [I] Handle to a connected socket
* file [I] Opened file handle for file to send
* total_len [I] Total number of file bytes to send
* chunk_len [I] Chunk size to send file in (0=default)
* overlapped [I] For asynchronous operation
* buffers [I] Head/tail data, or NULL if none
* flags [I] TF_ Flags from mswsock.h
*
* RETURNS
* Success: TRUE
* Failure: FALSE. Use WSAGetLastError() for details of the error.
*/
BOOL WINAPI TransmitFile(SOCKET s, HANDLE file, DWORD total_len,
DWORD chunk_len, LPOVERLAPPED overlapped,
LPTRANSMIT_FILE_BUFFERS buffers, DWORD flags)
{
if (!initialised)
get_fn_pointers(s);
if (!transmitfile_fn)
return FALSE;
return transmitfile_fn(s, file, total_len, chunk_len, overlapped, buffers, flags);
}
/***********************************************************************
* WSARecvEx (MSWSOCK.@)
*/
INT WINAPI WSARecvEx(
SOCKET s, /* [in] Descriptor identifying a connected socket */
char *buf, /* [out] Buffer for the incoming data */
INT len, /* [in] Length of buf, in bytes */
INT *flags) /* [in/out] Indicator specifying whether the message is
fully or partially received for datagram sockets */
{
FIXME("not implemented\n");
return SOCKET_ERROR;
}