struct infra_cache*
infra_create(struct config_file* cfg)
{
struct infra_cache* infra = (struct infra_cache*)calloc(1,
sizeof(struct infra_cache));
size_t maxmem = cfg->infra_cache_numhosts * (sizeof(struct infra_key)+
sizeof(struct infra_data)+INFRA_BYTES_NAME);
infra->hosts = slabhash_create(cfg->infra_cache_slabs,
INFRA_HOST_STARTSIZE, maxmem, &infra_sizefunc, &infra_compfunc,
&infra_delkeyfunc, &infra_deldatafunc, NULL);
if(!infra->hosts) {
free(infra);
return NULL;
}
infra->host_ttl = cfg->host_ttl;
name_tree_init(&infra->domain_limits);
infra_dp_ratelimit = cfg->ratelimit;
if(cfg->ratelimit != 0) {
infra->domain_rates = slabhash_create(cfg->ratelimit_slabs,
INFRA_HOST_STARTSIZE, cfg->ratelimit_size,
&rate_sizefunc, &rate_compfunc, &rate_delkeyfunc,
&rate_deldatafunc, NULL);
if(!infra->domain_rates) {
infra_delete(infra);
return NULL;
}
/* insert config data into ratelimits */
if(!infra_ratelimit_cfg_insert(infra, cfg)) {
infra_delete(infra);
return NULL;
}
name_tree_init_parents(&infra->domain_limits);
}
return infra;
}
void
ub_ctx_delete(struct ub_ctx* ctx)
{
struct alloc_cache* a, *na;
int do_stop = 1;
if(!ctx) return;
/* see if bg thread is created and if threads have been killed */
/* no locks, because those may be held by terminated threads */
/* for processes the read pipe is closed and we see that on read */
#ifdef HAVE_PTHREAD
if(ctx->created_bg && ctx->dothread) {
if(pthread_kill(ctx->bg_tid, 0) == ESRCH) {
/* thread has been killed */
do_stop = 0;
}
}
#endif /* HAVE_PTHREAD */
if(do_stop)
ub_stop_bg(ctx);
libworker_delete_event(ctx->event_worker);
modstack_desetup(&ctx->mods, ctx->env);
a = ctx->alloc_list;
while(a) {
na = a->super;
a->super = &ctx->superalloc;
alloc_clear(a);
free(a);
a = na;
}
local_zones_delete(ctx->local_zones);
lock_basic_destroy(&ctx->qqpipe_lock);
lock_basic_destroy(&ctx->rrpipe_lock);
lock_basic_destroy(&ctx->cfglock);
tube_delete(ctx->qq_pipe);
tube_delete(ctx->rr_pipe);
if(ctx->env) {
slabhash_delete(ctx->env->msg_cache);
rrset_cache_delete(ctx->env->rrset_cache);
infra_delete(ctx->env->infra_cache);
config_delete(ctx->env->cfg);
edns_known_options_delete(ctx->env);
auth_zones_delete(ctx->env->auth_zones);
free(ctx->env);
}
ub_randfree(ctx->seed_rnd);
alloc_clear(&ctx->superalloc);
traverse_postorder(&ctx->queries, delq, NULL);
free(ctx);
#ifdef USE_WINSOCK
WSACleanup();
#endif
}
struct infra_cache*
infra_adjust(struct infra_cache* infra, struct config_file* cfg)
{
size_t maxmem;
if(!infra)
return infra_create(cfg);
infra->host_ttl = cfg->host_ttl;
maxmem = cfg->infra_cache_numhosts * (sizeof(struct infra_key)+
sizeof(struct infra_data)+INFRA_BYTES_NAME);
if(maxmem != slabhash_get_size(infra->hosts) ||
cfg->infra_cache_slabs != infra->hosts->size) {
infra_delete(infra);
infra = infra_create(cfg);
}
return infra;
}
void
ub_ctx_delete(struct ub_ctx* ctx)
{
struct alloc_cache* a, *na;
if(!ctx) return;
/* stop the bg thread */
lock_basic_lock(&ctx->cfglock);
if(ctx->created_bg) {
uint8_t* msg;
uint32_t len;
uint32_t cmd = UB_LIBCMD_QUIT;
lock_basic_unlock(&ctx->cfglock);
lock_basic_lock(&ctx->qqpipe_lock);
(void)tube_write_msg(ctx->qq_pipe, (uint8_t*)&cmd,
(uint32_t)sizeof(cmd), 0);
lock_basic_unlock(&ctx->qqpipe_lock);
lock_basic_lock(&ctx->rrpipe_lock);
while(tube_read_msg(ctx->rr_pipe, &msg, &len, 0)) {
/* discard all results except a quit confirm */
if(context_serial_getcmd(msg, len) == UB_LIBCMD_QUIT) {
free(msg);
break;
}
free(msg);
}
lock_basic_unlock(&ctx->rrpipe_lock);
/* if bg worker is a thread, wait for it to exit, so that all
* resources are really gone. */
lock_basic_lock(&ctx->cfglock);
if(ctx->dothread) {
lock_basic_unlock(&ctx->cfglock);
ub_thread_join(ctx->bg_tid);
} else {
lock_basic_unlock(&ctx->cfglock);
}
}
else {
lock_basic_unlock(&ctx->cfglock);
}
modstack_desetup(&ctx->mods, ctx->env);
a = ctx->alloc_list;
while(a) {
na = a->super;
a->super = &ctx->superalloc;
alloc_clear(a);
free(a);
a = na;
}
local_zones_delete(ctx->local_zones);
lock_basic_destroy(&ctx->qqpipe_lock);
lock_basic_destroy(&ctx->rrpipe_lock);
lock_basic_destroy(&ctx->cfglock);
tube_delete(ctx->qq_pipe);
tube_delete(ctx->rr_pipe);
if(ctx->env) {
slabhash_delete(ctx->env->msg_cache);
rrset_cache_delete(ctx->env->rrset_cache);
infra_delete(ctx->env->infra_cache);
config_delete(ctx->env->cfg);
free(ctx->env);
}
ub_randfree(ctx->seed_rnd);
alloc_clear(&ctx->superalloc);
traverse_postorder(&ctx->queries, delq, NULL);
free(ctx);
#ifdef USE_WINSOCK
WSACleanup();
#endif
}
void
daemon_delete(struct daemon* daemon)
{
size_t i;
if(!daemon)
return;
modstack_desetup(&daemon->mods, daemon->env);
daemon_remote_delete(daemon->rc);
for(i = 0; i < daemon->num_ports; i++)
listening_ports_free(daemon->ports[i]);
free(daemon->ports);
listening_ports_free(daemon->rc_ports);
if(daemon->env) {
slabhash_delete(daemon->env->msg_cache);
rrset_cache_delete(daemon->env->rrset_cache);
infra_delete(daemon->env->infra_cache);
edns_known_options_delete(daemon->env);
auth_zones_delete(daemon->env->auth_zones);
}
ub_randfree(daemon->rand);
alloc_clear(&daemon->superalloc);
acl_list_delete(daemon->acl);
free(daemon->chroot);
free(daemon->pidfile);
free(daemon->env);
#ifdef HAVE_SSL
SSL_CTX_free((SSL_CTX*)daemon->listen_sslctx);
SSL_CTX_free((SSL_CTX*)daemon->connect_sslctx);
#endif
free(daemon);
#ifdef LEX_HAS_YYLEX_DESTROY
/* lex cleanup */
ub_c_lex_destroy();
#endif
/* libcrypto cleanup */
#ifdef HAVE_SSL
# if defined(USE_GOST) && defined(HAVE_LDNS_KEY_EVP_UNLOAD_GOST)
sldns_key_EVP_unload_gost();
# endif
# if HAVE_DECL_SSL_COMP_GET_COMPRESSION_METHODS && HAVE_DECL_SK_SSL_COMP_POP_FREE
# ifndef S_SPLINT_S
# if OPENSSL_VERSION_NUMBER < 0x10100000
sk_SSL_COMP_pop_free(comp_meth, (void(*)())CRYPTO_free);
# endif
# endif
# endif
# ifdef HAVE_OPENSSL_CONFIG
EVP_cleanup();
# if OPENSSL_VERSION_NUMBER < 0x10100000
ENGINE_cleanup();
# endif
CONF_modules_free();
# endif
# ifdef HAVE_CRYPTO_CLEANUP_ALL_EX_DATA
CRYPTO_cleanup_all_ex_data(); /* safe, no more threads right now */
# endif
# ifdef HAVE_ERR_FREE_STRINGS
ERR_free_strings();
# endif
# if OPENSSL_VERSION_NUMBER < 0x10100000
RAND_cleanup();
# endif
# if defined(HAVE_SSL) && defined(OPENSSL_THREADS) && !defined(THREADS_DISABLED)
ub_openssl_lock_delete();
# endif
#ifndef HAVE_ARC4RANDOM
_ARC4_LOCK_DESTROY();
#endif
#elif defined(HAVE_NSS)
NSS_Shutdown();
#endif /* HAVE_SSL or HAVE_NSS */
checklock_stop();
#ifdef USE_WINSOCK
if(WSACleanup() != 0) {
log_err("Could not WSACleanup: %s",
wsa_strerror(WSAGetLastError()));
}
#endif
}
