static long gettoken (token *t, char *p) {
unsigned j;
sbuff_reset(&t->s);
j = 0;
/* read a meta */
if (!p[j]) {
t->m = EXIT;
return j;
}
if (p[j] == '*') {
t->m = WILD_MANY;
} else if (p[j] == '?') {
t->m = WILD_ONCE;
} else {
sbuff_push(&t->s, p[j]);
t->m = EXACT;
}
j++;
/* read a sub string */
while (p[j]) {
if (p[j] == '*' || p[j] == '?') {
if (t->s.len && sbuff_head(&t->s) == '\\') {
sbuff_xchg(&t->s, p[j]);
j += 1;
} else {
break;
}
} else {
sbuff_push(&t->s, p[j++]);
}
}
return j;
}
static void reply(struct netdevice* dev, mac target, uint32_t ip, int broadcast) {
sbuff * buf = raw_sbuff_alloc(sizeof(struct ethernet_frame) + sizeof(struct arp_packet));
add_ref(buf);
sbuff_push(buf, sizeof(struct ethernet_frame));
struct arp_packet * arp = (struct arp_packet*)buf->head;
arp->htype = ntos(1);
arp->ptype = ntos(0x0800);
arp->hlen = 6;
arp->plen = 4;
arp->operation = ntos(2);
memcpy(arp->senderMac, dev->mac, 6);
arp->senderIp = ntol(dev->ip);
memcpy(arp->targetMac, target, 6);
arp->targetIp = ntol(ip);
ethernet_send(buf, 0x0806, broadcast ? BROADCAST_MAC : target, dev);
release_ref(buf, sbuff_free);
}
