X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fmdnsd.git;a=blobdiff_plain;f=cache.c;h=123925afde4c80831600425004f258066807d483;hp=b5653dd4f02bac38d6598498817da82409e225d4;hb=431db651f04d18d2ee454e49d14806f08283f28c;hpb=7075533129612c48d2fbca84f45a465c31276b2e diff --git a/cache.c b/cache.c index b5653dd..123925a 100644 --- a/cache.c +++ b/cache.c @@ -39,12 +39,10 @@ #include "cache.h" #include "util.h" #include "dns.h" +#include "interface.h" static struct uloop_timeout cache_gc; struct avl_tree records, entries, hosts; -static struct blob_buf b; - -static struct kvlist types; static void cache_record_free(struct cache_record *r) @@ -91,37 +89,14 @@ cache_gc_timer(struct uloop_timeout *timeout) uloop_timeout_set(timeout, 10000); } -static void -cache_load_services(void) -{ - struct blob_attr *cur; - int rem; - - blob_buf_init(&b, 0); - - if (!blobmsg_add_json_from_file(&b, "/lib/mdns/service-types")) - return; - - blob_for_each_attr(cur, b.head, rem) - kvlist_set(&types, blobmsg_name(cur), blobmsg_get_string(cur)); -} - -char* -cache_lookup_name(const char *key) -{ - return kvlist_get(&types, key); -} - int cache_init(void) { - kvlist_init(&types, kvlist_strlen); avl_init(&entries, avl_strcmp, true, NULL); avl_init(&records, avl_strcmp, true, NULL); cache_gc.cb = cache_gc_timer; uloop_timeout_set(&cache_gc, 10000); - cache_load_services(); return 0; } @@ -144,11 +119,11 @@ cache_scan(void) struct cache_entry *s; avl_for_each_element(&entries, s, avl) - dns_send_question(&listener, s->entry, TYPE_PTR); + dns_send_question(cur_iface, s->entry, TYPE_PTR); } static struct cache_entry* -cache_entry(struct uloop_fd *u, char *entry, int hlen, int ttl) +cache_entry(struct interface *iface, char *entry, int hlen, int ttl) { struct cache_entry *s; char *entry_buf; @@ -178,7 +153,7 @@ cache_entry(struct uloop_fd *u, char *entry, int hlen, int ttl) avl_insert(&entries, &s->avl); if (!hlen) - dns_send_question(u, entry, TYPE_PTR); + dns_send_question(iface, entry, TYPE_PTR); return s; } @@ -240,7 +215,7 @@ cache_host_is_known(char *record) } void -cache_answer(struct uloop_fd *u, uint8_t *base, int blen, char *name, struct dns_answer *a, uint8_t *rdata) +cache_answer(struct interface *iface, uint8_t *base, int blen, char *name, struct dns_answer *a, uint8_t *rdata) { struct dns_srv_data *dsd = (struct dns_srv_data *) rdata; struct cache_record *r; @@ -248,6 +223,7 @@ cache_answer(struct uloop_fd *u, uint8_t *base, int blen, char *name, struct dns char *p = NULL; char *name_buf; void *rdata_ptr, *txt_ptr; + int host_len = 0; if (!(a->class & CLASS_IN)) return; @@ -268,15 +244,11 @@ cache_answer(struct uloop_fd *u, uint8_t *base, int blen, char *name, struct dns rdlength = strlen(rdata_buffer); - if (!strcmp(C_DNS_SD, name)) { - cache_entry(u, rdata_buffer, 0, a->ttl); - return; - } - - if ((rdlength < nlen) && (rdlength - nlen - 1 > 0)) - return; + if (strcmp(C_DNS_SD, name) != 0 && + nlen + 1 < rdlength && !strcmp(rdata_buffer + rdlength - nlen, name)) + host_len = rdlength - nlen - 1; - cache_entry(u, rdata_buffer, rdlength - nlen - 1, a->ttl); + cache_entry(iface, rdata_buffer, host_len, a->ttl); return; case TYPE_SRV: @@ -306,14 +278,14 @@ cache_answer(struct uloop_fd *u, uint8_t *base, int blen, char *name, struct dns break; case TYPE_A: - cache_entry(u, name, strlen(name), a->ttl); + cache_entry(iface, name, strlen(name), a->ttl); if (a->rdlength != 4) return; dlen = 4; break; case TYPE_AAAA: - cache_entry(u, name, strlen(name), a->ttl); + cache_entry(iface, name, strlen(name), a->ttl); if (a->rdlength != 16) return; dlen = 16;