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/*
IPX support library - RIP
Copyright (C) 1994, 1995 Ales Dryak <e-mail: A.Dryak@sh.cvut.cz>
Copyright (C) 1996, Volker Lendecke <lendecke@namu01.gwdg.de>
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <sys/socket.h>
#include <netinet/in.h>
#include "ipxrip.h"
#include "ipxd.h"
int
ipx_rip_size(int n)
{
if (n>IPX_RIP_MAX_ENTRIES)
{
return 0;
}
return 2 + n * sizeof(struct rip_entry);
}
static int
ipx_rip_sendto(int sock, struct rip_packet *buffer, int size,
struct sockaddr_ipx *daddr)
{
if (ipx_rip_output_func!=NULL)
{
return ipx_rip_output_func(sock, buffer, size, daddr);
}
return 0;
}
int
ipx_rip_output_init(struct rip_output *out, IPXNet net)
{
out->entries=0;
out->send_error = 0;
out->buffer.operation=htons(IPX_RIP_OP_REQUEST);
out->dest_addr.sipx_family=AF_IPX;
out->dest_addr.sipx_type=IPX_RIP_PTYPE;
out->dest_addr.sipx_network=htonl(net);
return 0;
}
void
ipx_rip_output_flush(struct rip_output *out)
{
if (out->entries==0)
{
return;
}
if (out->send_error != 0)
{
out->entries = 0;
return;
}
if (ipx_rip_sendto(out->sk, &(out->buffer), ipx_rip_size(out->entries),
&(out->dest_addr)) < 0)
{
out->send_error = 1;
check_request = 1;
}
out->entries=0;
}
void
ipx_rip_output_request(struct rip_output *out, IPXNet net)
{
struct rip_entry *re;
if (out->entries>=IPX_RIP_MAX_ENTRIES)
{
ipx_rip_output_flush(out);
}
if (out->buffer.operation!=htons(IPX_RIP_OP_REQUEST))
{
ipx_rip_output_flush(out);
out->buffer.operation=htons(IPX_RIP_OP_REQUEST);
}
re = &(out->buffer.rip_entries[out->entries]);
re->network = htonl(net);
re->hops = 0;
re->ticks = 0;
out->entries += 1;
}
void
ipx_rip_output_response(struct rip_output *out, IPXNet net, hop_t hops,
tick_t ticks, int down_allow)
{
struct rip_entry* re;
if (hops>=IPX_RIP_NET_DOWN && !down_allow)
{
return;
}
if (out->entries>=IPX_RIP_MAX_ENTRIES)
{
ipx_rip_output_flush(out);
}
if (out->buffer.operation!=htons(IPX_RIP_OP_RESPONSE))
{
ipx_rip_output_flush(out);
out->buffer.operation=htons(IPX_RIP_OP_RESPONSE);
}
if (passive != 0)
{
return;
}
re = &(out->buffer.rip_entries[out->entries]);
re->network = htonl(net);
re->hops = htons(hops);
re->ticks = htons(ticks);
out->entries += 1;
}
void
ipx_rip_output_set_destination(struct rip_output *out, IPXNode node,
IPXPort port)
{
ipx_rip_output_flush(out);
ipx_assign_node(out->dest_addr.sipx_node,node);
out->dest_addr.sipx_port=htons(port);
}
void
ipx_rip_dump(struct rip_packet *pkt, int len)
{
ipx_rip_fdump(stdout, pkt, len);
}
void
ipx_rip_fdump(FILE *file, struct rip_packet *pkt, int len)
{
struct rip_entry *re=pkt->rip_entries;
int ent = (len-2) / sizeof(struct rip_entry);
if (len<2)
{
return;
}
fprintf(file,"Operation: %i size: %i ", ntohs(pkt->operation),len);
switch (ntohs(pkt->operation))
{
case IPX_RIP_OP_REQUEST:
fprintf(file,"(Request)\n");
if (len != ipx_rip_size(ent))
{
fprintf(file,"Warning: Bad RIP size (not 8*n+2)\n");
}
for(; ent > 0; ent -= 1)
{
fprintf(file,"RIP: Network: ");
ipx_fprint_network(file,ntohl(re->network));
fprintf(file,"\n");
re += 1;
}
break;
case IPX_RIP_OP_RESPONSE:
fprintf(file,"(Response)\n");
if (len != ipx_rip_size(ent))
{
fprintf(file,"Warning: Bad RIP size (not 8*n+2)\n");
}
for(; ent > 0; ent -= 1)
{
fprintf(file,"RIP: Network: ");
ipx_fprint_network(file,ntohl(re->network));
fprintf(file," HopCount: %u Ticks: %u\n",
ntohs(re->hops),ntohs(re->ticks));
re += 1;
}
break;
default:
fprintf(file,"(Unknown)\n");
break;
}
}
int (*ipx_rip_output_func)(int, void*, int, struct sockaddr_ipx*)=NULL;
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