void
rspamd_dns_test_func ()
{
struct rspamd_config *cfg;
rspamd_mempool_t *pool;
struct rspamd_async_session *s;
cfg = (struct rspamd_config *)g_malloc (sizeof (struct rspamd_config));
bzero (cfg, sizeof (struct rspamd_config));
cfg->cfg_pool = rspamd_mempool_new (rspamd_mempool_suggest_size ());
cfg->dns_retransmits = 2;
cfg->dns_timeout = 0.5;
pool = rspamd_mempool_new (rspamd_mempool_suggest_size ());
s = new_async_session (pool, session_fin, NULL, NULL, NULL);
resolver = dns_resolver_init (NULL, base, cfg);
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_A, "google.com"));
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_PTR, "81.19.70.3"));
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_MX, "rambler.ru"));
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_TXT, "rambler.ru"));
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_TXT, "google.com"));
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_SPF, "rambler.ru"));
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_SRV, "_xmpp-server._tcp.jabber.org"));
requests ++;
g_assert (make_dns_request (resolver, s, pool, test_dns_cb, NULL, RDNS_REQUEST_TXT, "non-existent.arpa"));
g_assert (resolver != NULL);
event_loop (0);
}
/***
* @function rspamd_tcp.request({params})
* This function creates and sends TCP request to the specified host and port,
* resolves hostname (if needed) and invokes continuation callback upon data received
* from the remote peer. This function accepts table of arguments with the following
* attributes
*
* - `task`: rspamd task objects (implies `pool`, `session`, `ev_base` and `resolver` arguments)
* - `ev_base`: event base (if no task specified)
* - `resolver`: DNS resolver (no task)
* - `session`: events session (no task)
* - `pool`: memory pool (no task)
* - `host`: IP or name of the peer (required)
* - `port`: remote port to use (required)
* - `data`: a table of strings or `rspamd_text` objects that contains data pieces
* - `callback`: continuation function (required)
* - `timeout`: floating point value that specifies timeout for IO operations in seconds
* - `partial`: boolean flag that specifies that callback should be called on any data portion received
* - `stop_pattern`: stop reading on finding a certain pattern (e.g. \r\n.\r\n for smtp)
* @return {boolean} true if request has been sent
*/
static gint
lua_tcp_request (lua_State *L)
{
const gchar *host;
gchar *stop_pattern = NULL;
guint port;
gint cbref, tp;
struct event_base *ev_base;
struct lua_tcp_cbdata *cbd;
struct rspamd_dns_resolver *resolver;
struct rspamd_async_session *session;
struct rspamd_task *task = NULL;
rspamd_mempool_t *pool;
struct iovec *iov = NULL;
guint niov = 0, total_out;
gdouble timeout = default_tcp_timeout;
gboolean partial = FALSE;
if (lua_type (L, 1) == LUA_TTABLE) {
lua_pushstring (L, "host");
lua_gettable (L, -2);
host = luaL_checkstring (L, -1);
lua_pop (L, 1);
lua_pushstring (L, "port");
lua_gettable (L, -2);
port = luaL_checknumber (L, -1);
lua_pop (L, 1);
lua_pushstring (L, "callback");
lua_gettable (L, -2);
if (host == NULL || lua_type (L, -1) != LUA_TFUNCTION) {
lua_pop (L, 1);
msg_err ("tcp request has bad params");
lua_pushboolean (L, FALSE);
return 1;
}
cbref = luaL_ref (L, LUA_REGISTRYINDEX);
lua_pushstring (L, "task");
lua_gettable (L, -2);
if (lua_type (L, -1) == LUA_TUSERDATA) {
task = lua_check_task (L, -1);
ev_base = task->ev_base;
resolver = task->resolver;
session = task->s;
pool = task->task_pool;
}
lua_pop (L, 1);
if (task == NULL) {
lua_pushstring (L, "ev_base");
lua_gettable (L, -2);
if (luaL_checkudata (L, -1, "rspamd{ev_base}")) {
ev_base = *(struct event_base **)lua_touserdata (L, -1);
}
else {
ev_base = NULL;
}
lua_pop (L, 1);
lua_pushstring (L, "pool");
lua_gettable (L, -2);
if (luaL_checkudata (L, -1, "rspamd{mempool}")) {
pool = *(rspamd_mempool_t **)lua_touserdata (L, -1);
}
else {
pool = NULL;
}
lua_pop (L, 1);
lua_pushstring (L, "resolver");
lua_gettable (L, -2);
if (luaL_checkudata (L, -1, "rspamd{resolver}")) {
resolver = *(struct rspamd_dns_resolver **)lua_touserdata (L, -1);
}
else {
resolver = lua_tcp_global_resolver (ev_base);
}
lua_pop (L, 1);
lua_pushstring (L, "session");
lua_gettable (L, -2);
if (luaL_checkudata (L, -1, "rspamd{session}")) {
session = *(struct rspamd_async_session **)lua_touserdata (L, -1);
}
else {
session = NULL;
}
lua_pop (L, 1);
}
lua_pushstring (L, "timeout");
lua_gettable (L, -2);
if (lua_type (L, -1) == LUA_TNUMBER) {
timeout = lua_tonumber (L, -1) * 1000.;
}
lua_pop (L, 1);
lua_pushstring (L, "stop_pattern");
lua_gettable (L, -2);
if (lua_type (L, -1) == LUA_TSTRING) {
stop_pattern = rspamd_mempool_strdup (pool, lua_tostring (L, -1));
}
lua_pop (L, 1);
lua_pushstring (L, "partial");
lua_gettable (L, -2);
if (lua_type (L, -1) == LUA_TBOOLEAN) {
partial = lua_toboolean (L, -1);
}
lua_pop (L, 1);
if (pool == NULL) {
lua_pop (L, 1);
msg_err ("tcp request has no memory pool associated");
lua_pushboolean (L, FALSE);
return 1;
}
lua_pushstring (L, "data");
lua_gettable (L, -2);
total_out = 0;
tp = lua_type (L, -1);
if (tp == LUA_TSTRING || tp == LUA_TUSERDATA) {
iov = rspamd_mempool_alloc (pool, sizeof (*iov));
niov = 1;
if (!lua_tcp_arg_toiovec (L, -1, pool, iov)) {
lua_pop (L, 1);
msg_err ("tcp request has bad data argument");
lua_pushboolean (L, FALSE);
return 1;
}
total_out = iov[0].iov_len;
}
else if (tp == LUA_TTABLE) {
/* Count parts */
lua_pushnil (L);
while (lua_next (L, -2) != 0) {
niov ++;
lua_pop (L, 1);
}
iov = rspamd_mempool_alloc (pool, sizeof (*iov) * niov);
lua_pushnil (L);
niov = 0;
while (lua_next (L, -2) != 0) {
if (!lua_tcp_arg_toiovec (L, -1, pool, &iov[niov])) {
lua_pop (L, 2);
msg_err ("tcp request has bad data argument at pos %d", niov);
lua_pushboolean (L, FALSE);
return 1;
}
total_out += iov[niov].iov_len;
niov ++;
lua_pop (L, 1);
}
}
lua_pop (L, 1);
}
else {
msg_err ("tcp request has bad params");
lua_pushboolean (L, FALSE);
return 1;
}
cbd = g_slice_alloc0 (sizeof (*cbd));
cbd->L = L;
cbd->cbref = cbref;
cbd->ev_base = ev_base;
msec_to_tv (timeout, &cbd->tv);
cbd->fd = -1;
cbd->pool = pool;
cbd->partial = partial;
cbd->iov = iov;
cbd->iovlen = niov;
cbd->total = total_out;
cbd->pos = 0;
cbd->port = port;
cbd->stop_pattern = stop_pattern;
if (session) {
cbd->session = session;
rspamd_session_add_event (session,
(event_finalizer_t)lua_tcp_fin,
cbd,
g_quark_from_static_string ("lua tcp"));
}
if (rspamd_parse_inet_address (&cbd->addr, host)) {
rspamd_inet_address_set_port (cbd->addr, port);
/* Host is numeric IP, no need to resolve */
if (!lua_tcp_make_connection (cbd)) {
lua_tcp_maybe_free (cbd);
lua_pushboolean (L, FALSE);
return 1;
}
}
else {
if (task == NULL) {
if (!make_dns_request (resolver, session, NULL, lua_tcp_dns_handler, cbd,
RDNS_REQUEST_A, host)) {
lua_tcp_push_error (cbd, "cannot resolve host");
lua_tcp_maybe_free (cbd);
}
}
else {
if (!make_dns_request_task (task, lua_tcp_dns_handler, cbd,
RDNS_REQUEST_A, host)) {
lua_tcp_push_error (cbd, "cannot resolve host");
lua_tcp_maybe_free (cbd);
}
}
}
lua_pushboolean (L, TRUE);
return 1;
}
