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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>
#include <config.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#ifdef HAVE_NETAX25_AX25_H
#include <netax25/ax25.h>
#else
#include <netax25/kernel_ax25.h>
#endif
#ifdef HAVE_NETROM_NETROM_H
#include <netrom/netrom.h>
#else
#include <netax25/kernel_netrom.h>
#endif
#ifdef HAVE_NETROSE_ROSE_H
#include <netrose/rose.h>
#else
#include <netax25/kernel_rose.h>
#endif
#include <netax25/axlib.h>
#include <netax25/axconfig.h>
#include <netax25/nrconfig.h>
void alarm_handler(int sig)
{
}
void err(char *message)
{
write(STDOUT_FILENO, message, strlen(message));
exit(1);
}
int main(int argc, char **argv)
{
char buffer[512], *addr;
fd_set read_fd;
int n, s, addrlen = sizeof(struct full_sockaddr_ax25);
struct full_sockaddr_ax25 nrbind, nrconnect;
/*
* Arguments should be "netrom_call port mycall remaddr"
*/
if (argc != 4) {
strcpy(buffer, "ERROR: invalid number of parameters\r");
err(buffer);
}
if (nr_config_load_ports() == 0) {
strcpy(buffer, "ERROR: problem with nrports file\r");
err(buffer);
}
/*
* Parse the passed values for correctness.
*/
nrconnect.fsa_ax25.sax25_family = nrbind.fsa_ax25.sax25_family = AF_NETROM;
nrbind.fsa_ax25.sax25_ndigis = 1;
nrconnect.fsa_ax25.sax25_ndigis = 0;
if ((addr = nr_config_get_addr(argv[1])) == NULL) {
sprintf(buffer, "ERROR: invalid NET/ROM port name - %s\r", argv[1]);
err(buffer);
}
if (ax25_aton_entry(addr, nrbind.fsa_ax25.sax25_call.ax25_call) == -1) {
sprintf(buffer, "ERROR: invalid NET/ROM port callsign - %s\r", argv[1]);
err(buffer);
}
if (ax25_aton_entry(argv[2], nrbind.fsa_digipeater[0].ax25_call) == -1) {
sprintf(buffer, "ERROR: invalid callsign - %s\r", argv[2]);
err(buffer);
}
if ((addr = strchr(argv[3], ':')) == NULL)
addr = argv[3];
else
addr++;
if (ax25_aton_entry(addr, nrconnect.fsa_ax25.sax25_call.ax25_call) == -1) {
sprintf(buffer, "ERROR: invalid callsign - %s\r", argv[3]);
err(buffer);
}
/*
* Open the socket into the kernel.
*/
if ((s = socket(AF_NETROM, SOCK_SEQPACKET, 0)) < 0) {
sprintf(buffer, "ERROR: cannot open NET/ROM socket, %s\r", strerror(errno));
err(buffer);
}
/*
* Set our AX.25 callsign and NET/ROM callsign accordingly.
*/
if (bind(s, (struct sockaddr *)&nrbind, addrlen) != 0) {
sprintf(buffer, "ERROR: cannot bind NET/ROM socket, %s\r", strerror(errno));
err(buffer);
}
sprintf(buffer, "Connecting to %s ...\r", argv[3]);
write(STDOUT_FILENO, buffer, strlen(buffer));
/*
* If no response in 30 seconds, go away.
*/
alarm(30);
signal(SIGALRM, alarm_handler);
/*
* Lets try and connect to the far end.
*/
if (connect(s, (struct sockaddr *)&nrconnect, addrlen) != 0) {
switch (errno) {
case ECONNREFUSED:
strcpy(buffer, "*** Connection refused - aborting\r");
break;
case ENETUNREACH:
strcpy(buffer, "*** No known route - aborting\r");
break;
case EINTR:
strcpy(buffer, "*** Connection timed out - aborting\r");
break;
default:
sprintf(buffer, "ERROR: cannot connect to NET/ROM node, %s\r", strerror(errno));
break;
}
err(buffer);
}
/*
* We got there.
*/
alarm(0);
strcpy(buffer, "*** Connected\r");
write(STDOUT_FILENO, buffer, strlen(buffer));
/*
* Loop until one end of the connection goes away.
*/
for (;;) {
FD_ZERO(&read_fd);
FD_SET(STDIN_FILENO, &read_fd);
FD_SET(s, &read_fd);
select(s + 1, &read_fd, NULL, NULL, NULL);
if (FD_ISSET(s, &read_fd)) {
if ((n = read(s, buffer, 512)) == -1) {
strcpy(buffer, "\r*** Disconnected\r");
err(buffer);
}
write(STDOUT_FILENO, buffer, n);
}
if (FD_ISSET(STDIN_FILENO, &read_fd)) {
if ((n = read(STDIN_FILENO, buffer, 512)) == -1) {
close(s);
break;
}
write(s, buffer, n);
}
}
return 0;
}
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