static struct uloop_timeout reconnect;
char *iface_name = "eth0";
-static int
-parse_answer(struct interface *iface, uint8_t *buffer, int len, uint8_t **b, int *rlen, int cache)
-{
- char *name = dns_consume_name(buffer, len, b, rlen);
- struct dns_answer *a;
- uint8_t *rdata;
-
- if (!name) {
- fprintf(stderr, "dropping: bad question\n");
- return -1;
- }
-
- a = dns_consume_answer(b, rlen);
- if (!a) {
- fprintf(stderr, "dropping: bad question\n");
- return -1;
- }
-
- rdata = *b;
- if (a->rdlength > *rlen) {
- fprintf(stderr, "dropping: bad question\n");
- return -1;
- }
-
- *rlen -= a->rdlength;
- *b += a->rdlength;
-
- if (cache)
- cache_answer(iface, buffer, len, name, a, rdata);
-
- return 0;
-}
-
-static void
-parse_question(struct interface *iface, char *name, struct dns_question *q)
-{
- char *host;
-
- DBG(1, "Q -> %s %s\n", dns_type_string(q->type), name);
-
- switch (q->type) {
- case TYPE_ANY:
- host = service_name("local");
- if (!strcmp(name, host))
- service_reply(iface, NULL);
- break;
-
- case TYPE_PTR:
- service_announce_services(iface, name);
- service_reply(iface, name);
- break;
-
- case TYPE_AAAA:
- case TYPE_A:
- host = strstr(name, ".local");
- if (host)
- *host = '\0';
- if (!strcmp(hostname, name))
- service_reply_a(iface, q->type);
- break;
- };
-}
-
static void
read_socket(struct uloop_fd *u, unsigned int events)
{
struct interface *iface = container_of(u, struct interface, fd);
static uint8_t buffer[8 * 1024];
- uint8_t *b = buffer;
- struct dns_header *h;
- int len, rlen;
+ int len;
if (u->eof) {
uloop_fd_delete(u);
return;
}
- rlen = len = read(u->fd, buffer, sizeof(buffer));
+ len = read(u->fd, buffer, sizeof(buffer));
if (len < 1) {
fprintf(stderr, "read failed: %s\n", strerror(errno));
return;
}
- h = dns_consume_header(&b, &rlen);
- if (!h) {
- fprintf(stderr, "dropping: bad header\n");
- return;
- }
-
- while (h->questions-- > 0) {
- char *name = dns_consume_name(buffer, len, &b, &rlen);
- struct dns_question *q;
-
- if (!name) {
- fprintf(stderr, "dropping: bad name\n");
- return;
- }
-
- q = dns_consume_question(&b, &rlen);
- if (!q) {
- fprintf(stderr, "dropping: bad question\n");
- return;
- }
-
- if (!(h->flags & FLAG_RESPONSE))
- parse_question(iface, name, q);
- }
-
- if (!(h->flags & FLAG_RESPONSE))
- return;
-
- while (h->answers-- > 0)
- parse_answer(iface, buffer, len, &b, &rlen, 1);
-
- while (h->authority-- > 0)
- parse_answer(iface, buffer, len, &b, &rlen, 0);
-
- while (h->additional-- > 0)
- parse_answer(iface, buffer, len, &b, &rlen, 1);
+ dns_handle_packet(iface, buffer, len);
}
static void