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#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "rip98d.h"
static int build_header(unsigned char *message)
{
message[0] = RIPCMD_RESPONSE;
message[1] = RIP_VERSION_98;
message[2] = 0;
message[3] = 0;
return RIP98_HEADER;
}
void transmit_routes(int s)
{
unsigned char message[500];
struct route_struct *route;
struct sockaddr_in rem_addr;
int mess_len;
int size;
int i;
size = sizeof(struct sockaddr_in);
for (i = 0; i < dest_count; i++) {
if (debug && logging)
syslog(LOG_DEBUG, "transmit_routes: sending routing message to %s\n", inet_ntoa(dest_list[i].dest_addr));
memset((char *)&rem_addr, 0, sizeof(rem_addr));
rem_addr.sin_family = AF_INET;
rem_addr.sin_addr = dest_list[i].dest_addr;
rem_addr.sin_port = htons(RIP_PORT);
route = first_route;
while (route != NULL) {
mess_len = build_header(message);
while (mess_len < 184 && route != NULL) {
if (route->action != DEL_ROUTE) {
memcpy(message + mess_len + 0, (char *)&route->addr, sizeof(struct in_addr));
message[mess_len + 4] = route->bits;
message[mess_len + 5] = route->metric;
mess_len += RIP98_ENTRY;
}
route = route->next;
}
if (mess_len > RIP98_HEADER) {
if (sendto(s, message, mess_len, 0, (struct sockaddr *)&rem_addr, size) < 0) {
if (logging)
syslog(LOG_ERR, "sendto: %m");
}
}
}
}
}
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