int main (int argc, char **argv)
{
char *fname = NULL;
char *hostname = NULL;
char *progname = argv[0];
int retval = -1;
int type = -1;
struct tftp_conn *tc;
/* Check whether the user wants to put or get a file. */
while (argc > 0) {
if (strcmp("-g", argv[0]) == 0) {
fname = argv[1];
hostname = argv[2];
type = TFTP_TYPE_GET;
break;
} else if (strcmp("-p", argv[0]) == 0) {
fname = argv[1];
hostname = argv[2];
type = TFTP_TYPE_PUT;
break;
}
argc--;
argv++;
}
/* Print usage message */
if (!fname || !hostname) {
fprintf(stderr, "Usage: %s [-g|-p] FILE HOST\n",
progname);
return -1;
}
/* Connect to the remote server */
tc = tftp_connect(type, fname, MODE_OCTET, hostname);
if (!tc) {
fprintf(stderr, "Failed to connect!\n");
return -1;
}
/* Transfer the file to or from the server */
retval = tftp_transfer(tc);
if (retval < 0) {
fprintf(stderr, "File transfer failed!\n");
}
/* We are done. Cleanup our state. */
tftp_close(tc);
return retval;
}
uint8_t udp_packet_demultiplexer(uint8_t* src, uint16_t src_port, uint8_t* dst, uint16_t dst_port, uint8_t* payload, uint16_t len)
{
uint8_t retVal;
// printf("== udp packet handler ==\n");
// printf("== SRC: %02x.%02x.%02x.%02x.%02x.%02x:%d ==\n", src[0], src[1], src[2], src[3], src[4], src[5], src_port);
// printf("== DST: %02x.%02x.%02x.%02x.%02x.%02x:%d ==\n", dst[0], dst[1], dst[2], dst[3], dst[4], dst[5], dst_port);
uint8_t different=0;
//check for address match
different=memcmp(udp_get_localhost_ip(NULL), dst, IPV4_DESTINATION_LENGTH);
if(different)
{
different=memcmp(udp_get_broadcast_ip(NULL), dst, IPV4_DESTINATION_LENGTH);
}
if(!different)
{
if(dst_port == 69)
{
// printf("tftp negotiate port\n");
retVal=tftp_negotiate(src, src_port, dst, dst_port, payload, len - 8);
if(retVal)
printf("tftp_negotiate(), error=%d\n", retVal);
}
else if(dst_port == tftp_transfer_src_port())
{
// printf("tftp transfer port\n");
retVal=tftp_transfer(src, src_port, dst, dst_port, payload, len - 8);
if(retVal)
printf("tftp_transfer(), error=%d\n", retVal);
}
else if(dst_port == HELLO_WORLD_PORT)
{
printf("New neighbour:\nIP = %d.%d.%d.%d\n", src[0], src[1], src[2], src[3]);
}
else
{
printf("packet received for unassigned port: %d from ", dst_port);
print_addr_dec(src);
}
}
else
{
//nothing to do here yet
//may be for routing purposes...
printf("packet for someone else: ");
print_addr_dec(dst);
printf("port: %d\n", dst_port);
}
return 0;
}
