Windows/router/dynsockets.cpp

/*
 *  dynsockets.cpp - ip router
 *
 *  Basilisk II (C) 1997-2001 Christian Bauer
 *
 *  Windows platform specific code copyright (C) Lauri Pesonen
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "sysdeps.h"
#include "dynsockets.h"
#include "dump.h"
#include "main.h"


#if DEBUG
#pragma optimize("",off)
#endif


#include "debug.h"


/*
        Cannot link statically to winsock. We need ws2, but there are
        Win95 b2 users who can't (or won't) upgrade.
*/

static const char *wslib = "WS2_32.DLL";

static HMODULE hWinsock32 = 0;
static WSADATA WSAData;

int (WSAAPI *_WSAStartup) (WORD, LPWSADATA) = 0;
int (WSAAPI *_WSACleanup) (void) = 0;
int (WSAAPI *_gethostname) (char *, int) = 0;
char * (WSAAPI *_inet_ntoa) (struct in_addr) = 0;
struct hostent * (WSAAPI *_gethostbyname) (const char *) = 0;
int (WSAAPI *_send) (SOCKET, const char *, int, int) = 0;
int (WSAAPI *_sendto) (SOCKET, const char *, int, int, const struct sockaddr *, int) = 0;
int (WSAAPI *_recv) (SOCKET, char *, int, int) = 0;
int (WSAAPI *_recvfrom) (SOCKET, char *, int, int, struct sockaddr *, int *) = 0;
int (WSAAPI *_listen) (SOCKET, int) = 0;
SOCKET (WSAAPI *_accept) (SOCKET, struct sockaddr *, int *) = 0;
SOCKET (WSAAPI *_socket) (int, int, int) = 0;
int (WSAAPI *_bind) (SOCKET, const struct sockaddr *, int) = 0;
int (WSAAPI *_WSAAsyncSelect) (SOCKET, HWND, u_int, long) = 0;
int (WSAAPI *_closesocket) (SOCKET) = 0;
int (WSAAPI *_getsockname) (SOCKET, struct sockaddr *, int *) = 0;
int (WSAAPI *_WSARecvFrom) (SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, struct sockaddr *, LPINT, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE) = 0;
int (WSAAPI *_WSAGetLastError) (void) = 0;
int (WSAAPI *_WSAConnect) (SOCKET, const struct sockaddr *, int, LPWSABUF, LPWSABUF, LPQOS, LPQOS) = 0;
int (WSAAPI *_setsockopt) (SOCKET, int, int, const char *, int) = 0;
int (WSAAPI *_WSAEventSelect) (SOCKET, WSAEVENT, long) = 0;
WSAEVENT (WSAAPI *_WSACreateEvent) (void) = 0;
BOOL (WSAAPI *_WSACloseEvent) (WSAEVENT) = 0;
BOOL (WSAAPI *_WSAResetEvent) (WSAEVENT) = 0;
int (WSAAPI *_WSAEnumNetworkEvents) (SOCKET, WSAEVENT, LPWSANETWORKEVENTS) = 0;
int (WSAAPI *_shutdown) (SOCKET, int) = 0;
int (WSAAPI *_WSASend) (SOCKET, LPWSABUF, DWORD, LPDWORD, DWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE) = 0;
int (WSAAPI *_WSARecv) (SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE) = 0;
unsigned long (WSAAPI *_inet_addr) (const char *) = 0;

static bool load_sockets()
{
        bool result = false;

        hWinsock32 = LoadLibrary( wslib );
        if(!hWinsock32) {
                ErrorAlert("Could not load Winsock libraries; router module is not available. Please install Windows sockets 2.");
        } else {
                _WSAStartup = (int (WSAAPI *)(WORD, LPWSADATA))GetProcAddress( hWinsock32, "WSAStartup" );
                _WSACleanup = (int (WSAAPI *)(void))GetProcAddress( hWinsock32, "WSACleanup" );
                _gethostname = (int (WSAAPI *)(char *, int))GetProcAddress( hWinsock32, "gethostname" );
                _inet_ntoa = (char * (WSAAPI *)(struct in_addr))GetProcAddress( hWinsock32, "inet_ntoa" );
                _gethostbyname = (struct hostent * (WSAAPI *)(const char *))GetProcAddress( hWinsock32, "gethostbyname" );
                _send = (int (WSAAPI *)(SOCKET, const char *, int, int))GetProcAddress( hWinsock32, "send" );
                _sendto = (int (WSAAPI *)(SOCKET, const char *, int, int, const struct sockaddr *, int))GetProcAddress( hWinsock32, "sendto" );
                _recv = (int (WSAAPI *)(SOCKET, char *, int, int))GetProcAddress( hWinsock32, "recv" );
                _recvfrom = (int (WSAAPI *)(SOCKET, char *, int, int, struct sockaddr *, int *))GetProcAddress( hWinsock32, "recvfrom" );
                _listen = (int (WSAAPI *)(SOCKET, int))GetProcAddress( hWinsock32, "listen" );
                _accept = (SOCKET (WSAAPI *)(SOCKET, struct sockaddr *, int *))GetProcAddress( hWinsock32, "accept" );
                _socket = (SOCKET (WSAAPI *)(int, int, int))GetProcAddress( hWinsock32, "socket" );
                _bind = (int (WSAAPI *)(SOCKET, const struct sockaddr *, int))GetProcAddress( hWinsock32, "bind" );
                _WSAAsyncSelect = (int (WSAAPI *)(SOCKET, HWND, u_int, long))GetProcAddress( hWinsock32, "WSAAsyncSelect" );
                _closesocket = (int (WSAAPI *)(SOCKET))GetProcAddress( hWinsock32, "closesocket" );
                _getsockname = (int (WSAAPI *)(SOCKET, struct sockaddr *, int *))GetProcAddress( hWinsock32, "getsockname" );
                _WSARecvFrom = (int (WSAAPI *)(SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, struct sockaddr *, LPINT, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE))GetProcAddress( hWinsock32, "WSARecvFrom" );
                _WSAGetLastError = (int (WSAAPI *)(void))GetProcAddress( hWinsock32, "WSAGetLastError" );
                _WSAConnect = (int (WSAAPI *)(SOCKET, const struct sockaddr *, int, LPWSABUF, LPWSABUF, LPQOS, LPQOS))GetProcAddress( hWinsock32, "WSAConnect" );
                _setsockopt = (int (WSAAPI *)(SOCKET, int, int, const char *, int))GetProcAddress( hWinsock32, "setsockopt" );
                _WSAEventSelect = (int (WSAAPI *)(SOCKET, WSAEVENT, long))GetProcAddress( hWinsock32, "WSAEventSelect" );
                _WSACreateEvent = (WSAEVENT (WSAAPI *)(void))GetProcAddress( hWinsock32, "WSACreateEvent" );
                _WSACloseEvent = (BOOL (WSAAPI *)(WSAEVENT))GetProcAddress( hWinsock32, "WSACloseEvent" );
                _WSAResetEvent = (BOOL (WSAAPI *)(WSAEVENT))GetProcAddress( hWinsock32, "WSAResetEvent" );
                _WSAEnumNetworkEvents = (BOOL (WSAAPI *)(SOCKET, WSAEVENT, LPWSANETWORKEVENTS))GetProcAddress( hWinsock32, "WSAEnumNetworkEvents" );
                _shutdown = (int (WSAAPI *)(SOCKET, int))GetProcAddress( hWinsock32, "shutdown" );
                _WSASend = (int (WSAAPI *)(SOCKET, LPWSABUF, DWORD, LPDWORD, DWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE))GetProcAddress( hWinsock32, "WSASend" );
                _WSARecv = (int (WSAAPI *)(SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE))GetProcAddress( hWinsock32, "WSARecv" );
                _inet_addr = (unsigned long (WSAAPI *)(const char *))GetProcAddress( hWinsock32, "inet_addr" );
                
                if( _WSAStartup && _WSACleanup && _gethostname && _inet_ntoa && _gethostbyname &&
                                _send && _sendto && _recv && _recvfrom && _listen && _accept && _socket && _bind &&
                                _WSAAsyncSelect && _closesocket && _getsockname && _WSARecvFrom && _WSAGetLastError &&
                                _WSAConnect && _setsockopt && _WSAEventSelect && _WSACreateEvent && _WSACloseEvent &&
                                _WSAResetEvent && _WSAEnumNetworkEvents && _shutdown && _WSASend && _WSARecv && _inet_addr
                )
                {
                        result = true;
                } else {
                        ErrorAlert("Could not find required entry points; router module is not available. Please install Windows sockets 2.");
                }
        }

        return result;
}

bool dynsockets_init(void)
{
        bool result = false;
        if(load_sockets()) {
                if( (_WSAStartup(MAKEWORD(2,0), &WSAData)) != 0 ||
                                LOBYTE( WSAData.wVersion ) != 2 ||
        HIBYTE( WSAData.wVersion ) != 0 )
                {
                        ErrorAlert("Could not start Windows sockets version 2.");
                } else {
                        result = true;
                }
        }
        return result;
}

void dynsockets_final(void)
{
        if(hWinsock32) {
                _WSACleanup();
                FreeLibrary( hWinsock32 );
                hWinsock32 = 0;
        }
        _WSAStartup = 0;
        _WSACleanup = 0;
        _gethostname = 0;
        _inet_ntoa = 0;
        _gethostbyname = 0;
        _send = 0;
        _sendto = 0;
        _recv = 0;
        _recvfrom = 0;
        _listen = 0;
        _accept = 0;
        _socket = 0;
        _bind = 0;
        _WSAAsyncSelect = 0;
        _closesocket = 0;
        _getsockname = 0;
        _WSARecvFrom = 0;
        _WSAGetLastError = 0;
        _WSAConnect = 0;
        _setsockopt = 0;
        _WSAEventSelect = 0;
        _WSACreateEvent = 0;
        _WSACloseEvent = 0;
        _WSAResetEvent = 0;
        _WSAEnumNetworkEvents = 0;
        _shutdown = 0;
        _WSASend = 0;
        _WSARecv = 0;
        _inet_addr = 0;
}
Revision:	1.1
Committed:	2004-12-05T16:48:36Z (19 years, 11 months ago) by gbeauche
Branch:	MAIN
CVS Tags:	nigel-build-19, nigel-build-17
Log Message:	import NAT-Router code from original Basilisk II for Windows
#	User	Rev	Content
1	gbeauche	1.1	/*
2			* dynsockets.cpp - ip router
3			*
4			* Basilisk II (C) 1997-2001 Christian Bauer
5			*
6			* Windows platform specific code copyright (C) Lauri Pesonen
7			*
8			* This program is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License as published by
10			* the Free Software Foundation; either version 2 of the License, or
11			* (at your option) any later version.
12			*
13			* This program 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
16			* GNU General Public License for more details.
17			*
18			* You should have received a copy of the GNU General Public License
19			* along with this program; if not, write to the Free Software
20			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21			*/
22
23			#include "sysdeps.h"
24			#include "dynsockets.h"
25			#include "dump.h"
26			#include "main.h"
27
28
29
30			#if DEBUG
31			#pragma optimize("",off)
32			#endif
33
34
35			#include "debug.h"
36
37
38			/*
39			Cannot link statically to winsock. We need ws2, but there are
40			Win95 b2 users who can't (or won't) upgrade.
41			*/
42
43			static const char *wslib = "WS2_32.DLL";
44
45			static HMODULE hWinsock32 = 0;
46			static WSADATA WSAData;
47
48			int (WSAAPI *_WSAStartup) (WORD, LPWSADATA) = 0;
49			int (WSAAPI *_WSACleanup) (void) = 0;
50			int (WSAAPI _gethostname) (char , int) = 0;
51			char * (WSAAPI *_inet_ntoa) (struct in_addr) = 0;
52			struct hostent * (WSAAPI _gethostbyname) (const char ) = 0;
53			int (WSAAPI _send) (SOCKET, const char , int, int) = 0;
54			int (WSAAPI _sendto) (SOCKET, const char , int, int, const struct sockaddr *, int) = 0;
55			int (WSAAPI _recv) (SOCKET, char , int, int) = 0;
56			int (WSAAPI _recvfrom) (SOCKET, char , int, int, struct sockaddr , int ) = 0;
57			int (WSAAPI *_listen) (SOCKET, int) = 0;
58			SOCKET (WSAAPI _accept) (SOCKET, struct sockaddr , int *) = 0;
59			SOCKET (WSAAPI *_socket) (int, int, int) = 0;
60			int (WSAAPI _bind) (SOCKET, const struct sockaddr , int) = 0;
61			int (WSAAPI *_WSAAsyncSelect) (SOCKET, HWND, u_int, long) = 0;
62			int (WSAAPI *_closesocket) (SOCKET) = 0;
63			int (WSAAPI _getsockname) (SOCKET, struct sockaddr , int *) = 0;
64			int (WSAAPI _WSARecvFrom) (SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, struct sockaddr , LPINT, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE) = 0;
65			int (WSAAPI *_WSAGetLastError) (void) = 0;
66			int (WSAAPI _WSAConnect) (SOCKET, const struct sockaddr , int, LPWSABUF, LPWSABUF, LPQOS, LPQOS) = 0;
67			int (WSAAPI _setsockopt) (SOCKET, int, int, const char , int) = 0;
68			int (WSAAPI *_WSAEventSelect) (SOCKET, WSAEVENT, long) = 0;
69			WSAEVENT (WSAAPI *_WSACreateEvent) (void) = 0;
70			BOOL (WSAAPI *_WSACloseEvent) (WSAEVENT) = 0;
71			BOOL (WSAAPI *_WSAResetEvent) (WSAEVENT) = 0;
72			int (WSAAPI *_WSAEnumNetworkEvents) (SOCKET, WSAEVENT, LPWSANETWORKEVENTS) = 0;
73			int (WSAAPI *_shutdown) (SOCKET, int) = 0;
74			int (WSAAPI *_WSASend) (SOCKET, LPWSABUF, DWORD, LPDWORD, DWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE) = 0;
75			int (WSAAPI *_WSARecv) (SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE) = 0;
76			unsigned long (WSAAPI _inet_addr) (const char ) = 0;
77
78			static bool load_sockets()
79			{
80			bool result = false;
81
82			hWinsock32 = LoadLibrary( wslib );
83			if(!hWinsock32) {
84			ErrorAlert("Could not load Winsock libraries; router module is not available. Please install Windows sockets 2.");
85			} else {
86			_WSAStartup = (int (WSAAPI *)(WORD, LPWSADATA))GetProcAddress( hWinsock32, "WSAStartup" );
87			_WSACleanup = (int (WSAAPI *)(void))GetProcAddress( hWinsock32, "WSACleanup" );
88			_gethostname = (int (WSAAPI )(char , int))GetProcAddress( hWinsock32, "gethostname" );
89			_inet_ntoa = (char * (WSAAPI *)(struct in_addr))GetProcAddress( hWinsock32, "inet_ntoa" );
90			_gethostbyname = (struct hostent * (WSAAPI )(const char ))GetProcAddress( hWinsock32, "gethostbyname" );
91			_send = (int (WSAAPI )(SOCKET, const char , int, int))GetProcAddress( hWinsock32, "send" );
92			_sendto = (int (WSAAPI )(SOCKET, const char , int, int, const struct sockaddr *, int))GetProcAddress( hWinsock32, "sendto" );
93			_recv = (int (WSAAPI )(SOCKET, char , int, int))GetProcAddress( hWinsock32, "recv" );
94			_recvfrom = (int (WSAAPI )(SOCKET, char , int, int, struct sockaddr , int ))GetProcAddress( hWinsock32, "recvfrom" );
95			_listen = (int (WSAAPI *)(SOCKET, int))GetProcAddress( hWinsock32, "listen" );
96			_accept = (SOCKET (WSAAPI )(SOCKET, struct sockaddr , int *))GetProcAddress( hWinsock32, "accept" );
97			_socket = (SOCKET (WSAAPI *)(int, int, int))GetProcAddress( hWinsock32, "socket" );
98			_bind = (int (WSAAPI )(SOCKET, const struct sockaddr , int))GetProcAddress( hWinsock32, "bind" );
99			_WSAAsyncSelect = (int (WSAAPI *)(SOCKET, HWND, u_int, long))GetProcAddress( hWinsock32, "WSAAsyncSelect" );
100			_closesocket = (int (WSAAPI *)(SOCKET))GetProcAddress( hWinsock32, "closesocket" );
101			_getsockname = (int (WSAAPI )(SOCKET, struct sockaddr , int *))GetProcAddress( hWinsock32, "getsockname" );
102			_WSARecvFrom = (int (WSAAPI )(SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, struct sockaddr , LPINT, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE))GetProcAddress( hWinsock32, "WSARecvFrom" );
103			_WSAGetLastError = (int (WSAAPI *)(void))GetProcAddress( hWinsock32, "WSAGetLastError" );
104			_WSAConnect = (int (WSAAPI )(SOCKET, const struct sockaddr , int, LPWSABUF, LPWSABUF, LPQOS, LPQOS))GetProcAddress( hWinsock32, "WSAConnect" );
105			_setsockopt = (int (WSAAPI )(SOCKET, int, int, const char , int))GetProcAddress( hWinsock32, "setsockopt" );
106			_WSAEventSelect = (int (WSAAPI *)(SOCKET, WSAEVENT, long))GetProcAddress( hWinsock32, "WSAEventSelect" );
107			_WSACreateEvent = (WSAEVENT (WSAAPI *)(void))GetProcAddress( hWinsock32, "WSACreateEvent" );
108			_WSACloseEvent = (BOOL (WSAAPI *)(WSAEVENT))GetProcAddress( hWinsock32, "WSACloseEvent" );
109			_WSAResetEvent = (BOOL (WSAAPI *)(WSAEVENT))GetProcAddress( hWinsock32, "WSAResetEvent" );
110			_WSAEnumNetworkEvents = (BOOL (WSAAPI *)(SOCKET, WSAEVENT, LPWSANETWORKEVENTS))GetProcAddress( hWinsock32, "WSAEnumNetworkEvents" );
111			_shutdown = (int (WSAAPI *)(SOCKET, int))GetProcAddress( hWinsock32, "shutdown" );
112			_WSASend = (int (WSAAPI *)(SOCKET, LPWSABUF, DWORD, LPDWORD, DWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE))GetProcAddress( hWinsock32, "WSASend" );
113			_WSARecv = (int (WSAAPI *)(SOCKET, LPWSABUF, DWORD, LPDWORD, LPDWORD, LPWSAOVERLAPPED, LPWSAOVERLAPPED_COMPLETION_ROUTINE))GetProcAddress( hWinsock32, "WSARecv" );
114			_inet_addr = (unsigned long (WSAAPI )(const char ))GetProcAddress( hWinsock32, "inet_addr" );
115
116			if( _WSAStartup && _WSACleanup && _gethostname && _inet_ntoa && _gethostbyname &&
117			_send && _sendto && _recv && _recvfrom && _listen && _accept && _socket && _bind &&
118			_WSAAsyncSelect && _closesocket && _getsockname && _WSARecvFrom && _WSAGetLastError &&
119			_WSAConnect && _setsockopt && _WSAEventSelect && _WSACreateEvent && _WSACloseEvent &&
120			_WSAResetEvent && _WSAEnumNetworkEvents && _shutdown && _WSASend && _WSARecv && _inet_addr
121			)
122			{
123			result = true;
124			} else {
125			ErrorAlert("Could not find required entry points; router module is not available. Please install Windows sockets 2.");
126			}
127			}
128
129			return result;
130			}
131
132			bool dynsockets_init(void)
133			{
134			bool result = false;
135			if(load_sockets()) {
136			if( (_WSAStartup(MAKEWORD(2,0), &WSAData)) != 0 \|\|
137			LOBYTE( WSAData.wVersion ) != 2 \|\|
138			HIBYTE( WSAData.wVersion ) != 0 )
139			{
140			ErrorAlert("Could not start Windows sockets version 2.");
141			} else {
142			result = true;
143			}
144			}
145			return result;
146			}
147
148			void dynsockets_final(void)
149			{
150			if(hWinsock32) {
151			_WSACleanup();
152			FreeLibrary( hWinsock32 );
153			hWinsock32 = 0;
154			}
155			_WSAStartup = 0;
156			_WSACleanup = 0;
157			_gethostname = 0;
158			_inet_ntoa = 0;
159			_gethostbyname = 0;
160			_send = 0;
161			_sendto = 0;
162			_recv = 0;
163			_recvfrom = 0;
164			_listen = 0;
165			_accept = 0;
166			_socket = 0;
167			_bind = 0;
168			_WSAAsyncSelect = 0;
169			_closesocket = 0;
170			_getsockname = 0;
171			_WSARecvFrom = 0;
172			_WSAGetLastError = 0;
173			_WSAConnect = 0;
174			_setsockopt = 0;
175			_WSAEventSelect = 0;
176			_WSACreateEvent = 0;
177			_WSACloseEvent = 0;
178			_WSAResetEvent = 0;
179			_WSAEnumNetworkEvents = 0;
180			_shutdown = 0;
181			_WSASend = 0;
182			_WSARecv = 0;
183			_inet_addr = 0;
184			}