zmq::ctx_t::~ctx_t ()
{
// Check that there are no remaining sockets.
zmq_assert (sockets.empty ());
// Ask I/O threads to terminate. If stop signal wasn't sent to I/O
// thread subsequent invocation of destructor would hang-up.
for (io_threads_t::size_type i = 0; i != io_threads.size (); i++) {
io_threads [i]->stop ();
}
// Wait till I/O threads actually terminate.
for (io_threads_t::size_type i = 0; i != io_threads.size (); i++) {
LIBZMQ_DELETE(io_threads [i]);
}
// Deallocate the reaper thread object.
LIBZMQ_DELETE(reaper);
// Deallocate the array of mailboxes. No special work is
// needed as mailboxes themselves were deallocated with their
// corresponding io_thread/socket objects.
free (slots);
// If we've done any Curve encryption, we may have a file handle
// to /dev/urandom open that needs to be cleaned up.
#ifdef ZMQ_HAVE_CURVE
randombytes_close ();
#endif
// Remove the tag, so that the object is considered dead.
tag = ZMQ_CTX_TAG_VALUE_BAD;
}
static int impl_tests(void)
{
#ifndef __native_client__
randombytes_implementation impl = randombytes_sysrandom_implementation;
#else
randombytes_implementation impl = randombytes_nativeclient_implementation;
#endif
uint32_t v = randombytes_random();
impl.uniform = randombytes_uniform_impl;
randombytes_close();
randombytes_set_implementation(&impl);
assert(randombytes_uniform(v) == v);
assert(randombytes_uniform(v) == v);
assert(randombytes_uniform(v) == v);
assert(randombytes_uniform(v) == v);
randombytes_close();
impl.close = NULL;
randombytes_close();
return 0;
}
void
fDns_close(void)
{
fDns_lua_close();
fDns_close_lmdb(&fDns_db_drw);
fDns_close_lmdb(&fDns_db_shared);
randombytes_close();
fDns_notify_deinit();
if (fDns_notify_fd != -1)
(void) close(fDns_notify_fd);
// fDns_logstat_close();
}
static int randombytes_tests(void)
{
unsigned int f = 0U;
unsigned int i;
uint32_t n;
#ifdef __EMSCRIPTEN__
assert(strcmp(randombytes_implementation_name(), "sysrandom"));
#else
assert(strcmp(randombytes_implementation_name(), "js"));
#endif
randombytes(x, 1U);
do {
n = randombytes_random();
f |= ((n >> 24) > 1);
f |= ((n >> 16) > 1) << 1;
f |= ((n >> 8) > 1) << 2;
f |= ((n ) > 1) << 3;
f |= (n > 0x7fffffff) << 4;
} while (f != 0x1f);
randombytes_close();
for (i = 0; i < 256; ++i) {
freq[i] = 0;
}
for (i = 0; i < 65536; ++i) {
++freq[randombytes_uniform(256)];
}
for (i = 0; i < 256; ++i) {
if (!freq[i]) {
printf("randombytes_uniform() test failed\n");
}
}
assert(randombytes_uniform(1U) == 0U);
randombytes_close();
#ifndef __EMSCRIPTEN__
randombytes_set_implementation(&randombytes_salsa20_implementation);
assert(strcmp(randombytes_implementation_name(), "salsa20") == 0);
#endif
randombytes_stir();
for (i = 0; i < 256; ++i) {
freq[i] = 0;
}
for (i = 0; i < 65536; ++i) {
++freq[randombytes_uniform(256)];
}
for (i = 0; i < 256; ++i) {
if (!freq[i]) {
printf("randombytes_uniform() test failed\n");
}
}
memset(x, 0, sizeof x);
randombytes_buf(x, sizeof x);
for (i = 0; i < 256; ++i) {
freq[i] = 0;
}
for (i = 0; i < sizeof x; ++i) {
++freq[255 & (int)x[i]];
}
for (i = 0; i < 256; ++i) {
if (!freq[i]) {
printf("randombytes_buf() test failed\n");
}
}
assert(randombytes_uniform(1U) == 0U);
randombytes_close();
randombytes(x, 1U);
randombytes_close();
return 0;
}
int
dnscrypt_proxy_main(int argc, char *argv[])
{
ProxyContext proxy_context;
setvbuf(stdout, NULL, _IOLBF, BUFSIZ);
stack_trace_on_crash();
#ifdef PLUGINS
if ((app_context.dcps_context = plugin_support_context_new()) == NULL) {
logger_noformat(NULL, LOG_ERR, "Unable to setup plugin support");
exit(2);
}
#endif
if (proxy_context_init(&proxy_context, argc, argv) != 0) {
logger_noformat(NULL, LOG_ERR, "Unable to start the proxy");
exit(1);
}
#ifdef USE_ONLY_PORTABLE_IMPLEMENTATIONS
randombytes_stir();
#else
logger_noformat(&proxy_context, LOG_INFO,
"Initializing libsodium for optimal performance");
if (sodium_init() != 0) {
exit(1);
}
#endif
randombytes_set_implementation(&randombytes_salsa20_implementation);
#ifdef PLUGINS
if (plugin_support_context_load(app_context.dcps_context) != 0) {
logger_noformat(NULL, LOG_ERR, "Unable to load plugins");
exit(2);
}
#endif
app_context.proxy_context = &proxy_context;
logger_noformat(&proxy_context, LOG_INFO, "Generating a new key pair");
dnscrypt_client_init_with_new_key_pair(&proxy_context.dnscrypt_client);
logger_noformat(&proxy_context, LOG_INFO, "Done");
if (cert_updater_init(&proxy_context) != 0 ||
udp_listener_bind(&proxy_context) != 0 ||
tcp_listener_bind(&proxy_context) != 0) {
exit(1);
}
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN);
#endif
revoke_privileges(&proxy_context);
if (cert_updater_start(&proxy_context) != 0) {
exit(1);
}
if (skip_dispatch == 0) {
event_base_dispatch(proxy_context.event_loop);
}
logger_noformat(&proxy_context, LOG_INFO, "Stopping proxy");
cert_updater_free(&proxy_context);
udp_listener_stop(&proxy_context);
tcp_listener_stop(&proxy_context);
event_base_free(proxy_context.event_loop);
#ifdef PLUGINS
plugin_support_context_free(app_context.dcps_context);
#endif
proxy_context_free(&proxy_context);
app_context.proxy_context = NULL;
randombytes_close();
return 0;
}
/**
* Close the random file descriptor.
*/
void crypto_close (void)
{
randombytes_close();
}