238 lines
6.1 KiB
C
238 lines
6.1 KiB
C
/* $Id: ipx_bsd.c,v 1.7 2003-10-12 09:17:47 btb Exp $ */
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/*
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*
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* IPX driver using BSD style sockets
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* Mostly taken from dosemu
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <conf.h>
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <string.h>
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#ifdef HAVE_NETIPX_IPX_H
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#include <netipx/ipx.h>
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#else
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# include <linux/ipx.h>
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# ifndef IPX_TYPE
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# define IPX_TYPE 1
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# endif
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#endif
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#include <netinet/in.h>
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#include <unistd.h>
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#include <errno.h>
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#include "pstypes.h"
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#include "ipx_drv.h"
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#include "ipx_bsd.h"
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#ifndef DOSEMU
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#include "mono.h"
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#define n_printf(format, args...) mprintf((1, format, ## args))
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#define enter_priv_on()
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#define leave_priv_setting()
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#endif
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static int ipx_bsd_GetMyAddress(void)
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{
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int sock;
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struct sockaddr_ipx ipxs;
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struct sockaddr_ipx ipxs2;
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int len;
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int i;
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sock=socket(AF_IPX,SOCK_DGRAM,PF_IPX);
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if (sock == -1) {
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n_printf("IPX: could not open socket in GetMyAddress\n");
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return(-1);
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}
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/* bind this socket to network 0 */
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ipxs.sipx_family=AF_IPX;
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#ifdef IPX_MANUAL_ADDRESS
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memcpy(&ipxs.sipx_network, ipx_MyAddress, 4);
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#else
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ipxs.sipx_network=0;
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#endif
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ipxs.sipx_port=0;
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if (bind(sock,(struct sockaddr *)&ipxs,sizeof(ipxs)) == -1) {
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n_printf("IPX: could bind to network 0 in GetMyAddress\n");
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close( sock );
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return(-1);
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}
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len = sizeof(ipxs2);
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if (getsockname(sock,(struct sockaddr *)&ipxs2,&len) < 0) {
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n_printf("IPX: could not get socket name in GetMyAddress\n");
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close( sock );
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return(-1);
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}
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memcpy(ipx_MyAddress, &ipxs2.sipx_network, 4);
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for (i = 0; i < 6; i++) {
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ipx_MyAddress[4+i] = ipxs2.sipx_node[i];
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}
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close( sock );
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return(0);
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}
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static int ipx_bsd_OpenSocket(ipx_socket_t *sk, int port)
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{
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int sock; /* sock here means Linux socket handle */
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int opt;
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struct sockaddr_ipx ipxs;
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int len;
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struct sockaddr_ipx ipxs2;
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/* DANG_FIXTHIS - kludge to support broken linux IPX stack */
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/* need to convert dynamic socket open into a real socket number */
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/*
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if (port == 0) {
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n_printf("IPX: using socket %x\n", nextDynamicSocket);
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port = nextDynamicSocket++;
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}
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*/
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/* do a socket call, then bind to this port */
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sock = socket(AF_IPX, SOCK_DGRAM, PF_IPX);
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if (sock == -1) {
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n_printf("IPX: could not open IPX socket.\n");
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return -1;
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}
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#ifdef DOSEMU
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opt = 1;
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/* turn on socket debugging */
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if (d.network) {
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enter_priv_on();
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if (setsockopt(sock, SOL_SOCKET, SO_DEBUG, &opt, sizeof(opt)) == -1) {
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leave_priv_setting();
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n_printf("IPX: could not set socket option for debugging.\n");
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return -1;
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}
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leave_priv_setting();
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}
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#endif
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opt = 1;
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/* Permit broadcast output */
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enter_priv_on();
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if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST,
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&opt, sizeof(opt)) == -1) {
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leave_priv_setting();
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n_printf("IPX: could not set socket option for broadcast.\n");
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return -1;
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}
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#ifdef DOSEMU
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/* allow setting the type field in the IPX header */
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opt = 1;
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#if 0 /* this seems to be wrong: IPX_TYPE can only be set on level SOL_IPX */
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if (setsockopt(sock, SOL_SOCKET, IPX_TYPE, &opt, sizeof(opt)) == -1) {
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#else
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/* the socket _is_ an IPX socket, hence it first passes ipx_setsockopt()
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* in file linux/net/ipx/af_ipx.c. This one handles SOL_IPX itself and
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* passes SOL_SOCKET-levels down to sock_setsockopt().
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* Hence I guess the below is correct (can somebody please verify this?)
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* -- Hans, June 14 1997
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*/
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if (setsockopt(sock, SOL_IPX, IPX_TYPE, &opt, sizeof(opt)) == -1) {
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#endif
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leave_priv_setting();
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n_printf("IPX: could not set socket option for type.\n");
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return -1;
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}
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#endif
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ipxs.sipx_family = AF_IPX;
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ipxs.sipx_network = *((unsigned int *)&ipx_MyAddress[0]);
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/* ipxs.sipx_network = htonl(MyNetwork); */
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bzero(ipxs.sipx_node, 6); /* Please fill in my node name */
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ipxs.sipx_port = htons(port);
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/* now bind to this port */
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if (bind(sock, (struct sockaddr *) &ipxs, sizeof(ipxs)) == -1) {
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n_printf("IPX: could not bind socket to address\n");
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close( sock );
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leave_priv_setting();
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return -1;
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}
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if( port==0 ) {
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len = sizeof(ipxs2);
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if (getsockname(sock,(struct sockaddr *)&ipxs2,&len) < 0) {
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n_printf("IPX: could not get socket name in IPXOpenSocket\n");
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close( sock );
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leave_priv_setting();
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return -1;
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} else {
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port = htons(ipxs2.sipx_port);
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n_printf("IPX: opened dynamic socket %04x\n", port);
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}
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}
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leave_priv_setting();
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sk->fd = sock;
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sk->socket = port;
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return 0;
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}
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static void ipx_bsd_CloseSocket(ipx_socket_t *mysock) {
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/* now close the file descriptor for the socket, and free it */
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n_printf("IPX: closing file descriptor on socket %x\n", mysock->socket);
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close(mysock->fd);
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}
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static int ipx_bsd_SendPacket(ipx_socket_t *mysock, IPXPacket_t *IPXHeader,
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u_char *data, int dataLen) {
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struct sockaddr_ipx ipxs;
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ipxs.sipx_family = AF_IPX;
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/* get destination address from IPX packet header */
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memcpy(&ipxs.sipx_network, IPXHeader->Destination.Network, 4);
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/* if destination address is 0, then send to my net */
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if (ipxs.sipx_network == 0) {
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ipxs.sipx_network = *((unsigned int *)&ipx_MyAddress[0]);
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/* ipxs.sipx_network = htonl(MyNetwork); */
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}
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memcpy(&ipxs.sipx_node, IPXHeader->Destination.Node, 6);
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memcpy(&ipxs.sipx_port, IPXHeader->Destination.Socket, 2);
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ipxs.sipx_type = IPXHeader->PacketType;
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/* ipxs.sipx_port=htons(0x452); */
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return sendto(mysock->fd, data, dataLen, 0,
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(struct sockaddr *) &ipxs, sizeof(ipxs));
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}
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static int ipx_bsd_ReceivePacket(ipx_socket_t *s, char *buffer, int bufsize,
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struct ipx_recv_data *rd) {
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int sz, size;
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struct sockaddr_ipx ipxs;
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sz = sizeof(ipxs);
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if ((size = recvfrom(s->fd, buffer, bufsize, 0,
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(struct sockaddr *) &ipxs, &sz)) <= 0)
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return size;
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memcpy(rd->src_network, &ipxs.sipx_network, 4);
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memcpy(rd->src_node, ipxs.sipx_node, 6);
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rd->src_socket = ipxs.sipx_port;
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rd->dst_socket = s->socket;
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rd->pkt_type = ipxs.sipx_type;
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return size;
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}
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struct ipx_driver ipx_bsd = {
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ipx_bsd_GetMyAddress,
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ipx_bsd_OpenSocket,
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ipx_bsd_CloseSocket,
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ipx_bsd_SendPacket,
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ipx_bsd_ReceivePacket,
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ipx_general_PacketReady,
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NULL, // InitNetgameAuxData
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NULL, // HandleNetgameAuxData
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NULL, // HandleLeaveGame
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NULL // SendGamePacket
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};
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