int
do_get_file ()
{
int fail = 0, oldlen;
char *loadat = (char *)LOAD_ADDR;
last_ack = 0;
do_send_tftp( READ );
while (1) {
if ( le_get(buf, sizeof(buf), 5) == 0) { /* timeout occured */
if ( last_ack ) {
do_send_tftp( last_ack );
} else {
do_send_tftp( READ );
}
fail++;
if ( fail > 5 ) {
printf("\n");
return 1;
}
} else {
printf("%x \r", tftp->info.block*512);
if ((eh->ether_type != ETYPE_IP) || (iph->ip_p != IPP_UDP)) {
fail++;
continue;
}
if (servport == FTP_PORT) servport = udph->uh_sport;
if (tftp->info.op_code == FTPOP_ERR) {
printf("TFTP: Download error %d: %s\n",
tftp->info.block, tftp->data);
return 1;
}
if (tftp->info.block != last_ack + 1) { /* we recieved the wrong block */
if (tftp->info.block < last_ack +1) {
do_send_tftp(tftp->info.block); /* ackn whatever we recieved */
} else {
do_send_tftp( last_ack ); /* ackn the last confirmed block */
}
fail++;
} else { /* we got the right block */
fail = 0;
last_ack++;
oldlen = udph->uh_ulen;
do_send_tftp( last_ack );
/*printf("bcopy %x %x %d\n", &tftp->data, loadat, oldlen - 12);*/
bcopy(&tftp->data, loadat, oldlen - 12);
loadat += oldlen - 12;
if (oldlen < (8 + 4 + 512)) {
printf("\n");
return 0;
}
}
}
}
printf("\n");
return 0;
}
/* Receive and disassemble the rev_arp reply */
int
get_rev_arp(void)
{
le_get(buf, sizeof(buf), 6);
if (eh->ether_type == ETYPE_RARP && rarp->ar_op == OPCODE_REPLY) {
bcopy(rarp->arp_tpa, myip, sizeof(rarp->arp_tpa));
bcopy(rarp->arp_spa, servip, sizeof(rarp->arp_spa));
bcopy(rarp->arp_sha, servea, sizeof(rarp->arp_sha));
return (1);
}
return (0);
}
int
get_rev_arp(void)
{
le_get(buf, sizeof(buf), 6);
if (eh->ether_type == ETYPE_RARP && rarp->ar_op == OPCODE_REPLY) {
memcpy(myip, rarp->arp_tpa, sizeof(rarp->arp_tpa));
memcpy(servip, rarp->arp_spa, sizeof(rarp->arp_spa));
memcpy(servea, rarp->arp_sha, sizeof(rarp->arp_sha));
return 1;
}
return 0;
}
