266 lines
6.4 KiB
C
266 lines
6.4 KiB
C
#define DO_IPX_SEND_TEST 1
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/* emutli.c 04-Oct-96 */
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/*
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* One short try to emulate TLI with SOCKETS.
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*/
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/* (C)opyright (C) 1993,1996 Martin Stover, Marburg, Germany
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <linux/config.h>
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#include <linux/sockios.h>
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#include "net.h"
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#include <linux/if.h>
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#include <linux/route.h>
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#include <linux/in.h>
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#include <signal.h>
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#include <string.h>
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#include <errno.h>
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static int locipxdebug=0;
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void set_locipxdebug(int debug)
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{
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locipxdebug = debug;
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}
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void set_sock_debug(int sock)
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{
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if (setsockopt(sock, SOL_SOCKET, SO_DEBUG, &locipxdebug, sizeof(int))==-1){
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errorp(0, "setsockopt SO_DEBUG", NULL);
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}
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}
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#define sock2ipxadr(i, so) \
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{ \
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memcpy((i)->net, &(so)->sipx_network, IPX_NET_SIZE + IPX_NODE_SIZE); \
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(i)->sock[0] = ((uint8*)(&(so)->sipx_port))[0]; \
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(i)->sock[1] = ((uint8*)(&(so)->sipx_port))[1]; \
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}
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#define ipx2sockadr(so, i) \
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{ \
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memcpy(&(so)->sipx_network, (i)->net, IPX_NET_SIZE + IPX_NODE_SIZE); \
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((uint8*)(&(so)->sipx_port))[0] = (i)->sock[0]; \
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((uint8*)(&(so)->sipx_port))[1] = (i)->sock[1]; \
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}
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void set_emu_tli(void)
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{
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int i = get_ini_int(100);
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if (i > -1) locipxdebug = i;
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}
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int t_open(char *name, int open_mode, char * p)
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{
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int opt=1;
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int sock = socket(AF_IPX, SOCK_DGRAM, AF_IPX);
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if (sock < 0) return(sock);
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set_sock_debug(sock); /* debug switch */
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/* Now allow broadcast */
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if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &opt,sizeof(opt))==-1){
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errorp(0, "setsockopt SO_BROADCAST", NULL);
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close(sock);
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return(-1);
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}
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return(sock);
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}
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int t_bind(int sock, struct t_bind *a_in, struct t_bind *a_out)
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{
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struct sockaddr_ipx ipxs;
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int maxplen=sizeof(struct sockaddr_ipx);
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memset((char*)&ipxs, 0, sizeof(struct sockaddr_ipx));
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ipxs.sipx_family=AF_IPX;
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if (a_in != (struct t_bind*) NULL
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&& a_in->addr.len == sizeof(ipxAddr_t))
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ipx2sockadr(&ipxs, (ipxAddr_t*) (a_in->addr.buf));
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ipxs.sipx_network = 0L; /* allways default net */
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memset(ipxs.sipx_node, 0, IPX_NODE_SIZE); /* allways default node */
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/* Hi Volker :) */
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if (bind(sock, (struct sockaddr*)&ipxs, sizeof(struct sockaddr_ipx))==-1) {
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errorp(0, "TLI-BIND", "socket Nr:0x%x", (int)GET_BE16(&(ipxs.sipx_port)));
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return(-1);
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}
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if (a_out != (struct t_bind*) NULL) {
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if (getsockname(sock, (struct sockaddr*)&ipxs, &maxplen) == -1){
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errorp(0, "TLI-GETSOCKNAME", NULL);
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return(-1);
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}
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sock2ipxadr((ipxAddr_t*) (a_out->addr.buf), &ipxs);
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XDPRINTF((2,0,"T_BIND ADR=%s", visable_ipx_adr((ipxAddr_t *) a_out->addr.buf ) ));
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}
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return(0);
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}
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int t_unbind(int sock)
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{
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return(0);
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}
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int t_errno=0;
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void t_error(char *s)
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{
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errorp(0, "t_error", s);
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t_errno=0;
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}
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int t_close(int fd)
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{
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return(close(fd));
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}
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int poll( struct pollfd *fds, unsigned long nfds, int timeout)
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/* only POLL-IN */
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{
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fd_set readfs;
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/*
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fd_set writefs;
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fd_set exceptfs;
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*/
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struct pollfd *p = fds;
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struct timeval time_out;
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int k = (int)nfds;
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int result=-1;
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int high_f=0;
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FD_ZERO(&readfs);
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/*
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FD_ZERO(&writefs);
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FD_ZERO(&exceptfs);
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*/
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while (k--){
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if (p->fd > -1 && (p->events & POLLIN)) {
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FD_SET(p->fd, &readfs);
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if (p->fd > high_f) high_f = p->fd;
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}
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p->revents=0;
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p++;
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}
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if (timeout > 1000) {
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time_out.tv_sec = timeout / 1000;
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time_out.tv_usec = 0;
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} else {
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time_out.tv_sec = 0;
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time_out.tv_usec = timeout*1000;
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}
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if (0 > (result = select(high_f+1, &readfs, NULL, NULL, &time_out)))
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return(-1);
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if (result) {
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int rest=result;
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k = (int)nfds;
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p = fds;
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while (k--){
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if (p->fd > -1 && FD_ISSET(p->fd, &readfs)){
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p->revents = POLLIN;
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if (! --rest) break; /* ready */
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}
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p++;
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}
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}
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return(result);
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}
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inline int t_rcvudata(int fd, struct t_unitdata *ud, int *flags)
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{
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struct sockaddr_ipx ipxs;
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int sz = sizeof(struct sockaddr_ipx);
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int result;
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ipxs.sipx_family=AF_IPX;
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if (ud->addr.maxlen < sizeof(ipxAddr_t)) return(-1);
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result = recvfrom(fd, ud->udata.buf, ud->udata.maxlen, 0,
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(struct sockaddr *) &ipxs, &sz);
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if (result < 0) return(result);
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if (ud->opt.maxlen) {
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*((uint8*)ud->opt.buf) = ipxs.sipx_type;
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ud->opt.len = 1;
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}
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ud->udata.len=result;
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sock2ipxadr((ipxAddr_t*) (ud->addr.buf), &ipxs);
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ud->addr.len = sizeof(ipxAddr_t);
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return(result);
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}
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#if DO_IPX_SEND_TEST
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static int new_try;
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static int anz_tries;
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static struct t_unitdata *test_ud;
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static void sig_alarm(int rsig)
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{
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signal(rsig, SIG_IGN);
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XDPRINTF((0, 0,"GOT ALARM try=%d, sendto=%s",
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anz_tries+1, visable_ipx_adr((ipxAddr_t *) test_ud->addr.buf) ));
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if (anz_tries++ < 10) new_try++;
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}
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#endif
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inline int t_sndudata(int fd, struct t_unitdata *ud)
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{
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int result;
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struct sockaddr_ipx ipxs;
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if (ud->addr.len != sizeof(ipxAddr_t)) return(-1);
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#if DO_IPX_SEND_TEST
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{
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anz_tries=1;
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test_ud =ud;
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do {
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void (*old_sig)(int rsig) = signal(SIGALRM, sig_alarm);
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new_try = 0;
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alarm(1+anz_tries);
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#endif
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memset(&ipxs, 0, sizeof(struct sockaddr_ipx));
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ipxs.sipx_family=AF_IPX;
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ipx2sockadr(&ipxs, (ipxAddr_t*) (ud->addr.buf));
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ipxs.sipx_type = (ud->opt.len) ? (uint8) *((uint8*)(ud->opt.buf)) : 0;
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result = sendto(fd,(void *)ud->udata.buf,
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ud->udata.len, 0, (struct sockaddr *) &ipxs, sizeof(ipxs));
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#if DO_IPX_SEND_TEST
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alarm(0);
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signal(SIGALRM, old_sig);
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} while (new_try);
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}
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#endif
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return(result);
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}
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int t_rcvuderr(int fd, struct t_uderr *ud)
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{
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return(0);
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}
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