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acternabnc.c
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acternabnc.c
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/*
ActernaBNC: Bouncer tool to use the Acterna TestPad FST-2802 with
with a Linux Loopback Device
(C) 2011 - Unilogic Networks B.V.
Cliff Albert <cliff@unilogicnetworks.net>
License - BEERWARE+ (buy me a beer, but not schultenbrau, amstel, heineken, oranjeboom
lindeboom, oettinger, grolsch, bavaria, dommelsch or any beer brewn
in the United States of America)
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <string.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <unistd.h>
#define MAXFRAME_SIZE 1514
#define SND_FRAME_LEN 1480
#define VERSION "0.3.1"
int main(int argc, char *argv[])
{
/*
DEFINITIONS
*/
int s; /*socketdescriptor*/
struct sockaddr_storage peer_addr;
socklen_t peer_addr_len;
ssize_t returnsendto;
unsigned char* sbuffer = (unsigned char*)malloc(SND_FRAME_LEN);
unsigned char* buffer = (unsigned char*)malloc(MAXFRAME_SIZE);
int length = 0; /*length of the received frame*/
struct sockaddr_in si_other;
socklen_t slen=sizeof(si_other);
/*
CODE
*/
printf ("Acterna TestPad FST-2802 Linux Loopback\n");
printf ("(c) 2011 Unilogic Networks B.V.\n");
printf ("Release: August 12th 2011\n");
if (argc != 2) {
printf ("Usage: acternabnc <ip remote unit>\n");
exit(EXIT_FAILURE);
}
printf ("Remote Tester IP: %s \n",argv[1]);
s = socket(AF_INET, SOCK_RAW, 0xFE);
if (s == -1) { printf("ERROR BINDING SOCKET...\n"); exit(0); }
memset(buffer, '\0', MAXFRAME_SIZE);
memset(sbuffer, '\0', SND_FRAME_LEN);
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = 0xFE;
inet_aton(argv[1], &si_other.sin_addr);
peer_addr_len = sizeof(struct sockaddr_storage);
while(1){
length = recvfrom(s, buffer, MAXFRAME_SIZE, 0, (struct sockaddr *) &peer_addr, &peer_addr_len);
/*
printf ("Length of Packet: %i\n",length);
*/
sbuffer = buffer+20;
returnsendto = sendto(s, sbuffer, length - 20, 0, (struct sockaddr *) &si_other, slen);
memset(buffer, '\0', MAXFRAME_SIZE);
}
close(s);
}