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cache: make cname ttl countdown

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This commit is contained in:
Nick Peng
2022-02-16 19:02:37 +08:00
parent e98cf5b711
commit 75d91096ca
3 changed files with 45 additions and 2 deletions
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32
src/dns_cache.c
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@@ -412,7 +412,37 @@ int dns_cache_get_ttl(struct dns_cache *dns_cache)
return ttl;
}
int dns_cache_is_soa(struct dns_cache *dns_cache) {
int dns_cache_get_cname_ttl(struct dns_cache *dns_cache)
{
time_t now;
int ttl = 0;
time(&now);
struct dns_cache_addr *cache_addr = (struct dns_cache_addr *)dns_cache_get_data(dns_cache);
if (cache_addr->head.cache_type != CACHE_TYPE_ADDR) {
return 0;
}
ttl = dns_cache->info.insert_time + cache_addr->addr_data.cname_ttl - now;
if (ttl < 0) {
return 0;
}
int addr_ttl = dns_cache_get_ttl(dns_cache);
if (ttl < addr_ttl) {
return addr_ttl;
}
if (ttl < 0) {
return 0;
}
return ttl;
}
int dns_cache_is_soa(struct dns_cache *dns_cache)
{
if (dns_cache == NULL) {
return 0;
}