static int
remove_entry_if_stale(struct SessionHandle *data, struct Curl_dns_entry *dns)
{
struct hostcache_prune_data user;
if( !dns || (data->set.dns_cache_timeout == -1) || !data->hostcache)
/* cache forever means never prune, and NULL hostcache means
we can't do it */
return 0;
time(&user.now);
user.cache_timeout = data->set.dns_cache_timeout;
if ( !hostcache_timestamp_remove(&user,dns) )
return 0;
/* ok, we do need to clear the cache. although we need to remove just a
single entry we clean the entire hash, as no explicit delete function
is provided */
if(data->share)
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
Curl_hash_clean_with_criterium(data->hostcache,
(void *) &user,
hostcache_timestamp_remove);
if(data->share)
Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
return 1;
}
void Curl_hostcache_clean(struct SessionHandle *data)
{
/* Entries added to the hostcache with the CURLOPT_RESOLVE function are
* still present in the cache with the inuse counter set to 1. Detect them
* and cleanup!
*/
Curl_hash_clean_with_criterium(data->dns.hostcache, data, hostcache_inuse);
}
/*
* Prune the DNS cache. This assumes that a lock has already been taken.
*/
static void
hostcache_prune( curl_hash *hostcache, int cache_timeout, time_t now ) {
struct hostcache_prune_data user;
user.cache_timeout = cache_timeout;
user.now = now;
Curl_hash_clean_with_criterium( hostcache,
(void *) &user,
hostcache_timestamp_remove );
}
/*
* Check if the entry should be pruned. Assumes a locked cache.
*/
static int
remove_entry_if_stale(struct SessionHandle *data, struct Curl_dns_entry *dns)
{
struct hostcache_prune_data user;
if( !dns || (data->set.dns_cache_timeout == -1) || !data->dns.hostcache)
/* cache forever means never prune, and NULL hostcache means
we can't do it */
return 0;
time(&user.now);
user.cache_timeout = data->set.dns_cache_timeout;
if( !hostcache_timestamp_remove(&user,dns) )
return 0;
Curl_hash_clean_with_criterium(data->dns.hostcache,
(void *) &user,
hostcache_timestamp_remove);
return 1;
}
/* Removes all the entries in the given hash.
*
* @unittest: 1602
*/
void
Curl_hash_clean(struct curl_hash *h)
{
Curl_hash_clean_with_criterium(h, NULL, NULL);
}