static void
external_acl_cache_delete(external_acl * def, external_acl_entry * entry)
{
hash_remove_link(def->cache, &entry->hash);
dlinkDelete(&entry->lru, &def->lru_list);
def->cache_entries -= 1;
cbdataFree(entry);
}
static void
identClose(int fdnotused, void *data)
{
IdentStateData *state = data;
identCallback(state, NULL);
comm_close(state->fd);
hash_remove_link(ident_hash, (hash_link *) state);
cbdataFree(state);
}
void remove_file(hash_table *hash, const char *modname,const char * const url,const char * const client_addr) {
tmpfile_hash_link* lp;
if((lp=query_hash(hash, modname, url, client_addr)) !=NULL) {
hash_remove_link(hash, (hash_link*) lp);
unlink(lp->filename);
xfree((void*) lp->hash.key);
xfree((void*) lp->filename);
xfree((void*) lp);
}
}
static void
netdbHashDelete(const char *key)
{
hash_link *hptr = hash_lookup(addr_table, key);
if (hptr == NULL) {
debug_trap("netdbHashDelete: key not found");
return;
}
hash_remove_link(addr_table, hptr);
}
void *
leakFreeFL(void *p, const char *file, int line)
{
ptr *c = (ptr *) hash_lookup(htable, p);
assert(p);
assert(c != NULL);
hash_remove_link(htable, (hash_link *) c);
leakCount--;
xfree(c);
return p;
}
static void
authDigestNoncePurge(digest_nonce_h * nonce)
{
if (!nonce)
return;
if (!nonce->flags.incache)
return;
hash_remove_link(digest_nonce_cache, &nonce->hash);
nonce->flags.incache = 0;
/* the cache's link */
authDigestNonceUnlink(nonce);
}
static void
pconnDelete(struct _pconn *p)
{
debug(48, 3) ("pconnDelete: deleting %s\n", hashKeyStr(&p->hash));
hash_remove_link(table, (hash_link *) p);
if (p->nfds_alloc == PCONN_FDS_SZ)
memPoolFree(pconn_fds_pool, p->fds);
else
xfree(p->fds);
xfree(p->hash.key);
memPoolFree(pconn_data_pool, p);
}
static void
cbdataReallyFree(cbdata * c)
{
CBDUNL *unlock_func = c->unlock_func;
void *p = (void *) c->key;
int id = c->id;
hash_remove_link(htable, (hash_link *) c);
cbdataCount--;
xfree(c);
debug(45, 3) ("cbdataReallyFree: Freeing %p\n", p);
if (unlock_func)
unlock_func(p, id);
}
static void
authenticateDigestNonceDelete(digest_nonce_h * nonce)
{
if (nonce) {
assert(nonce->references == 0);
#if UNREACHABLECODE
if (nonce->flags.incache)
hash_remove_link(digest_nonce_cache, &nonce->hash);
#endif
assert(nonce->flags.incache == 0);
safe_free(nonce->hash.key);
memPoolFree(digest_nonce_pool, nonce);
}
}
static void
cachePurge(Cache * cache, storeSwapLogData * s, int update_digest)
{
CacheEntry *olde = (CacheEntry *) hash_lookup(cache->hash, s->key);
if (!olde) {
cache->bad_del_count++;
} else {
assert(cache->count);
hash_remove_link(cache->hash, (hash_link *) olde);
if (update_digest)
cacheDigestDel(cache->digest, s->key);
cacheEntryDestroy(olde);
cache->count--;
}
}
static void
cacheIndexDestroy(CacheIndex * idx)
{
hash_link *hashr = NULL;
if (idx) {
/* destroy hash list contents */
hash_first(idx->hash);
while (hashr = hash_next(idx->hash)) {
hash_remove_link(idx->hash, hashr);
cacheEntryDestroy((CacheEntry *) hashr);
}
/* destroy the hash table itself */
hashFreeMemory(idx->hash);
xfree(idx);
}
}
static void
authenticateAuthUserRequestUnlinkIp(const struct in_addr ipaddr)
{
auth_user_request_ip_hash_t *hash_entry;
if (!auth_user_request_ip_hash)
return;
hash_entry = hash_lookup(auth_user_request_ip_hash, &ipaddr);
if (hash_entry)
{
hash_remove_link(auth_user_request_ip_hash, &hash_entry->hash);
authenticateAuthUserRequestUnlock(hash_entry->auth_user_request);
memPoolFree(auth_user_request_ip_pool, hash_entry);
}
}
static void
netdbHostDelete(const net_db_name * x)
{
netdbEntry *n;
net_db_name **X;
assert(x != NULL);
assert(x->net_db_entry != NULL);
n = x->net_db_entry;
n->link_count--;
for (X = &n->hosts; *X; X = &(*X)->next) {
if (*X == x) {
*X = x->next;
break;
}
}
hash_remove_link(host_table, (hash_link *) x);
xfree(x->hash.key);
memFree((void *) x, MEM_NET_DB_NAME);
}
static void
cacheDestroy(Cache * cache)
{
CacheEntry *e = NULL;
hash_table *hash;
assert(cache);
hash = cache->hash;
/* destroy hash table contents */
hash_first(hash);
while (e = hash_next(hash)) {
hash_remove_link(hash, (hash_link *) e);
cacheEntryDestroy(e);
}
/* destroy the hash table itself */
hashFreeMemory(hash);
if (cache->digest)
cacheDigestDestroy(cache->digest);
xfree(cache);
}
void
delayUnregisterDelayIdPtr(delay_id * loc)
{
hash_link *lnk;
if (!delay_id_ptr_hash)
return;
/*
* If we went through a reconfigure, then all the delay_id's
* got set to zero, and they were removed from our hash
* table.
*/
if (*loc == 0)
return;
lnk = hash_lookup(delay_id_ptr_hash, loc);
assert(lnk);
hash_remove_link(delay_id_ptr_hash, lnk);
xxfree(lnk);
memory_used -= sizeof(*lnk);
}
void
authenticateFreeProxyAuthUser(void *data)
{
auth_user_t *u = data;
auth_user_request_t *auth_user_request;
dlink_node *link, *tmplink;
assert(data != NULL);
debug(29, 5) ("authenticateFreeProxyAuthUser: Freeing auth_user '%p' with refcount '%ld'.\n", u, (long int) u->references);
assert(u->references == 0);
/* were they linked in by username ? */
if (u->usernamehash)
{
assert(u->usernamehash->auth_user == u);
debug(29, 5) ("authenticateFreeProxyAuthUser: removing usernamehash entry '%p'\n", u->usernamehash);
hash_remove_link(proxy_auth_username_cache,
(hash_link *) u->usernamehash);
/* don't free the key as we use the same user string as the auth_user
* structure */
memFree(u->usernamehash, MEM_AUTH_USER_HASH);
}
/* remove any outstanding requests */
link = u->requests.head;
while (link)
{
debug(29, 5) ("authenticateFreeProxyAuthUser: removing request entry '%p'\n", link->data);
auth_user_request = link->data;
tmplink = link;
link = link->next;
dlinkDelete(tmplink, &u->requests);
dlinkNodeDelete(tmplink);
authenticateAuthUserRequestFree(auth_user_request);
}
/* free cached acl results */
aclCacheMatchFlush(&u->proxy_match_cache);
/* free seen ip address's */
authenticateAuthUserClearIp(u);
if (u->scheme_data && u->auth_module > 0)
authscheme_list[u->auth_module - 1].FreeUser(u);
/* prevent accidental reuse */
u->auth_type = AUTH_UNKNOWN;
memFree(u, MEM_AUTH_USER_T);
}
static void
clientdbGC(void *unused)
{
static int bucket = 0;
hash_link *link_next;
link_next = hash_get_bucket(client_table, bucket++);
while (link_next != NULL) {
ClientInfo *c = (ClientInfo *) link_next;
int age = squid_curtime - c->last_seen;
link_next = link_next->next;
if (c->n_established)
continue;
if (age < 24 * 3600 && c->Http.n_requests > 100)
continue;
if (age < 4 * 3600 && (c->Http.n_requests > 10 || c->Icp.n_requests > 10))
continue;
if (age < 5 * 60 && (c->Http.n_requests > 1 || c->Icp.n_requests > 1))
continue;
if (age < 60)
continue;
hash_remove_link(client_table, &c->hash);
clientdbFreeItem(c);
statCounter.client_http.clients--;
cleanup_removed++;
}
if (bucket < CLIENT_DB_HASH_SIZE)
eventAdd("client_db garbage collector", clientdbGC, NULL, 0.15, 0);
else {
bucket = 0;
cleanup_running = 0;
max_clients = statCounter.client_http.clients * 3 / 2;
if (!cleanup_scheduled) {
cleanup_scheduled = 1;
eventAdd("client_db garbage collector", clientdbScheduledGC, NULL, 3 * 3600, 0);
}
debug(49, 2) ("clientdbGC: Removed %d entries\n", cleanup_removed);
}
}
static void
idnsCallback(idns_query * q, rfc1035_rr * answers, int n, const char *error)
{
int valid;
valid = cbdataValid(q->callback_data);
cbdataUnlock(q->callback_data);
if (valid)
q->callback(q->callback_data, answers, n, error);
while (q->queue) {
idns_query *q2 = q->queue;
q->queue = q2->queue;
valid = cbdataValid(q2->callback_data);
cbdataUnlock(q2->callback_data);
if (valid)
q2->callback(q2->callback_data, answers, n, error);
cbdataFree(q2);
}
if (q->hash.key) {
hash_remove_link(idns_lookup_hash, &q->hash);
q->hash.key = NULL;
}
}
static int
cacheIndexScan(CacheIndex * idx, const char *fname, FILE * file)
{
int count = 0;
storeSwapLogData s;
fprintf(stderr, "%s scanning\n", fname);
while (fread(&s, sizeof(s), 1, file) == 1) {
count++;
idx->scanned_count++;
/* if (s.op <= SWAP_LOG_NOP || s.op >= SWAP_LOG_MAX)
* continue; */
if (s.op == SWAP_LOG_ADD) {
CacheEntry *olde = (CacheEntry *) hash_lookup(idx->hash, s.key);
if (olde) {
idx->bad_add_count++;
} else {
CacheEntry *e = cacheEntryCreate(&s);
hash_join(idx->hash, (hash_link *) e);
idx->count++;
}
} else if (s.op == SWAP_LOG_DEL) {
CacheEntry *olde = (CacheEntry *) hash_lookup(idx->hash, s.key);
if (!olde)
idx->bad_del_count++;
else {
assert(idx->count);
hash_remove_link(idx->hash, (hash_link *) olde);
cacheEntryDestroy(olde);
idx->count--;
}
} else {
fprintf(stderr, "%s:%d: unknown swap log action\n", fname, count);
exit(-3);
}
}
fprintf(stderr, "%s:%d: scanned (size: %d bytes)\n",
fname, count, (int) (count * sizeof(CacheEntry)));
return count;
}
static void
idnsGrokReply(const char *buf, size_t sz)
{
int n;
rfc1035_message *message = NULL;
idns_query *q;
n = rfc1035MessageUnpack(buf,
sz,
&message);
if (message == NULL) {
debug(78, 2) ("idnsGrokReply: Malformed DNS response\n");
return;
}
debug(78, 3) ("idnsGrokReply: ID %#hx, %d answers\n", message->id, n);
q = idnsFindQuery(message->id);
if (q == NULL) {
debug(78, 3) ("idnsGrokReply: Late response\n");
rfc1035MessageDestroy(message);
return;
}
if (rfc1035QueryCompare(&q->query, message->query) != 0) {
debug(78, 3) ("idnsGrokReply: Query mismatch (%s != %s)\n", q->query.name, message->query->name);
rfc1035MessageDestroy(message);
return;
}
dlinkDelete(&q->lru, &lru_list);
if (message->tc && q->tcp_socket == -1) {
debug(78, 2) ("idnsGrokReply: Response for %s truncated. Retrying using TCP\n", message->query->name);
rfc1035MessageDestroy(message);
idnsRetryTcp(q);
return;
}
idnsRcodeCount(n, q->attempt);
q->error = NULL;
if (n < 0) {
debug(78, 3) ("idnsGrokReply: error %s (%d)\n", rfc1035_error_message, rfc1035_errno);
q->error = rfc1035_error_message;
q->rcode = -n;
if (q->rcode == 2 && ++q->attempt < MAX_ATTEMPT) {
/*
* RCODE 2 is "Server failure - The name server was
* unable to process this query due to a problem with
* the name server."
*/
rfc1035MessageDestroy(message);
q->start_t = current_time;
q->id = idnsQueryID();
rfc1035SetQueryID(q->buf, q->id);
idnsSendQuery(q);
return;
}
if (q->rcode == 3 && q->do_searchpath && q->attempt < MAX_ATTEMPT) {
strcpy(q->name, q->orig);
if (q->domain < npc) {
strcat(q->name, ".");
strcat(q->name, searchpath[q->domain].domain);
debug(78, 3) ("idnsGrokReply: searchpath used for %s\n",
q->name);
q->domain++;
} else {
q->attempt++;
}
rfc1035MessageDestroy(message);
if (q->hash.key) {
hash_remove_link(idns_lookup_hash, &q->hash);
q->hash.key = NULL;
}
q->start_t = current_time;
q->id = idnsQueryID();
rfc1035SetQueryID(q->buf, q->id);
q->sz = rfc1035BuildAQuery(q->name, q->buf, sizeof(q->buf), q->id,
&q->query);
idnsCacheQuery(q);
idnsSendQuery(q);
return;
}
}
idnsCallback(q, message->answer, n, q->error);
rfc1035MessageDestroy(message);
idnsTcpCleanup(q);
cbdataFree(q);
}