/* Start watching event for all maps */
void
rspamd_map_watch (struct rspamd_config *cfg,
struct event_base *ev_base,
struct rspamd_dns_resolver *resolver)
{
GList *cur = cfg->maps;
struct rspamd_map *map;
/* First of all do synced read of data */
while (cur) {
map = cur->data;
map->ev_base = ev_base;
map->r = resolver;
if (!g_atomic_int_compare_and_exchange (map->locked, 0, 1)) {
msg_debug_map (
"don't try to reread map as it is locked by other process, "
"will reread it later");
rspamd_map_schedule_periodic (map, TRUE, TRUE, FALSE);
}
else {
rspamd_map_schedule_periodic (map, FALSE, TRUE, FALSE);
}
cur = g_list_next (cur);
}
}
static void
rspamd_map_schedule_periodic (struct rspamd_map *map,
gboolean locked, gboolean initial, gboolean errored)
{
const gdouble error_mult = 20.0, lock_mult = 0.1;
gdouble jittered_sec;
gdouble timeout;
struct map_periodic_cbdata *cbd;
timeout = map->poll_timeout;
if (initial) {
timeout = 0.0;
}
if (errored) {
timeout = map->poll_timeout * error_mult;
}
else if (locked) {
timeout = lock_mult;
}
cbd = g_slice_alloc0 (sizeof (*cbd));
cbd->cbdata.state = 0;
cbd->cbdata.prev_data = *map->user_data;
cbd->cbdata.cur_data = NULL;
cbd->cbdata.map = map;
cbd->map = map;
REF_INIT_RETAIN (cbd, rspamd_map_periodic_dtor);
if (initial) {
evtimer_set (&map->ev, rspamd_map_periodic_callback, cbd);
event_base_set (map->ev_base, &map->ev);
}
else {
evtimer_del (&map->ev);
evtimer_set (&map->ev, rspamd_map_periodic_callback, cbd);
event_base_set (map->ev_base, &map->ev);
}
jittered_sec = rspamd_time_jitter (timeout, 0);
msg_debug_map ("schedule new periodic event %p in %.2f seconds", cbd, jittered_sec);
double_to_tv (jittered_sec, &map->tv);
evtimer_add (&map->ev, &map->tv);
}
static void
rspamd_map_periodic_dtor (struct map_periodic_cbdata *periodic)
{
struct rspamd_map *map;
map = periodic->map;
msg_debug_map ("periodic dtor %p", periodic);
if (periodic->need_modify) {
/* We are done */
periodic->map->fin_callback (&periodic->cbdata);
*periodic->map->user_data = periodic->cbdata.cur_data;
}
else {
/* Not modified */
}
if (periodic->locked) {
rspamd_map_schedule_periodic (periodic->map, FALSE, FALSE, FALSE);
g_atomic_int_set (periodic->map->locked, 0);
}
g_slice_free1 (sizeof (*periodic), periodic);
}
static void
rspamd_map_periodic_callback (gint fd, short what, void *ud)
{
struct rspamd_map_backend *bk;
struct map_periodic_cbdata *cbd = ud;
struct rspamd_map *map;
map = cbd->map;
if (!cbd->locked) {
if (!g_atomic_int_compare_and_exchange (cbd->map->locked, 0, 1)) {
msg_debug_map (
"don't try to reread map as it is locked by other process, "
"will reread it later");
rspamd_map_schedule_periodic (map, TRUE, FALSE, FALSE);
MAP_RELEASE (cbd, "periodic");
return;
}
else {
cbd->locked = TRUE;
}
}
if (cbd->errored) {
/* We should not check other backends if some backend has failed */
rspamd_map_schedule_periodic (cbd->map, FALSE, FALSE, TRUE);
if (cbd->locked) {
g_atomic_int_set (cbd->map->locked, 0);
}
MAP_RELEASE (cbd, "periodic");
return;
}
/* For each backend we need to check for modifications */
if (cbd->cur_backend >= cbd->map->backends->len) {
/* Last backend */
MAP_RELEASE (cbd, "periodic");
return;
}
bk = g_ptr_array_index (cbd->map->backends, cbd->cur_backend);
g_assert (bk != NULL);
if (cbd->need_modify) {
/* Load data from the next backend */
if (bk->protocol == MAP_PROTO_HTTP || bk->protocol == MAP_PROTO_HTTPS) {
rspamd_map_http_read_callback (fd, what, cbd);
}
else {
rspamd_map_file_read_callback (fd, what, cbd);
}
}
else {
/* Check the next backend */
if (bk->protocol == MAP_PROTO_HTTP || bk->protocol == MAP_PROTO_HTTPS) {
rspamd_map_http_check_callback (fd, what, cbd);
}
else {
rspamd_map_file_check_callback (fd, what, cbd);
}
}
}
/**
* Async HTTP callback
*/
static void
rspamd_map_common_http_callback (struct rspamd_map *map, struct rspamd_map_backend *bk,
struct map_periodic_cbdata *periodic, gboolean check)
{
struct http_map_data *data;
struct http_callback_data *cbd;
data = bk->data.hd;
if (g_atomic_int_get (&map->cache->available) == 1) {
/* Read cached data */
if (check) {
if (data->last_checked < map->cache->last_checked) {
periodic->need_modify = TRUE;
/* Reset the whole chain */
periodic->cur_backend = 0;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, periodic);
}
return;
}
else if (rspamd_map_read_cached (map, periodic, data->host)) {
/* Switch to the next backend */
periodic->cur_backend ++;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, periodic);
data->last_checked = map->cache->last_checked;
return;
}
}
cbd = g_slice_alloc0 (sizeof (struct http_callback_data));
cbd->ev_base = map->ev_base;
cbd->map = map;
cbd->data = data;
cbd->fd = -1;
cbd->check = check;
cbd->periodic = periodic;
MAP_RETAIN (periodic, "periodic");
cbd->bk = bk;
MAP_RETAIN (bk, "rspamd_map_backend");
cbd->stage = map_resolve_host2;
double_to_tv (map->cfg->map_timeout, &cbd->tv);
REF_INIT_RETAIN (cbd, free_http_cbdata);
msg_debug_map ("%s map data from %s", check ? "checking" : "reading",
data->host);
/* Send both A and AAAA requests */
if (map->r->r) {
if (rdns_make_request_full (map->r->r, rspamd_map_dns_callback, cbd,
map->cfg->dns_timeout, map->cfg->dns_retransmits, 1,
data->host, RDNS_REQUEST_A)) {
MAP_RETAIN (cbd, "http_callback_data");
}
if (rdns_make_request_full (map->r->r, rspamd_map_dns_callback, cbd,
map->cfg->dns_timeout, map->cfg->dns_retransmits, 1,
data->host, RDNS_REQUEST_AAAA)) {
MAP_RETAIN (cbd, "http_callback_data");
}
map->dtor = free_http_cbdata_dtor;
map->dtor_data = cbd;
}
else {
msg_warn_map ("cannot load map: DNS resolver is not initialized");
cbd->periodic->errored = TRUE;
}
/* We don't need own ref as it is now ref counted by DNS handlers */
MAP_RELEASE (cbd, "http_callback_data");
}
static int
http_map_finish (struct rspamd_http_connection *conn,
struct rspamd_http_message *msg)
{
struct http_callback_data *cbd = conn->ud;
struct rspamd_map *map;
struct rspamd_map_backend *bk;
guchar *aux_data, *in = NULL;
gsize inlen = 0, dlen = 0;
map = cbd->map;
bk = cbd->bk;
if (msg->code == 200) {
if (cbd->check) {
cbd->periodic->need_modify = TRUE;
/* Reset the whole chain */
cbd->periodic->cur_backend = 0;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, cbd->periodic);
MAP_RELEASE (cbd, "http_callback_data");
return 0;
}
if (cbd->stage == map_load_file) {
if (msg->last_modified) {
cbd->data->last_checked = msg->last_modified;
}
else {
cbd->data->last_checked = msg->date;
}
/* Maybe we need to check signature ? */
if (bk->is_signed) {
if (bk->trusted_pubkey) {
/* No need to load key */
cbd->stage = map_load_signature;
cbd->pk = rspamd_pubkey_ref (bk->trusted_pubkey);
}
else {
cbd->stage = map_load_pubkey;
}
cbd->shmem_data = rspamd_http_message_shmem_ref (msg);
cbd->data_len = msg->body_buf.len;
rspamd_http_connection_reset (cbd->conn);
write_http_request (cbd);
MAP_RELEASE (cbd, "http_callback_data");
return 0;
}
else {
/* Unsinged version - just open file */
cbd->shmem_data = rspamd_http_message_shmem_ref (msg);
cbd->data_len = msg->body_buf.len;
goto read_data;
}
}
else if (cbd->stage == map_load_pubkey) {
/* We now can load pubkey */
cbd->shmem_pubkey = rspamd_http_message_shmem_ref (msg);
cbd->pubkey_len = msg->body_buf.len;
aux_data = rspamd_shmem_xmap (cbd->shmem_pubkey->shm_name,
PROT_READ, &inlen);
if (aux_data == NULL) {
msg_err_map ("cannot map pubkey file %s: %s",
cbd->shmem_pubkey->shm_name, strerror (errno));
goto err;
}
if (inlen < cbd->pubkey_len) {
msg_err_map ("cannot map pubkey file %s: %s",
cbd->shmem_pubkey->shm_name, strerror (errno));
munmap (aux_data, inlen);
goto err;
}
cbd->pk = rspamd_pubkey_from_base32 (aux_data, cbd->pubkey_len,
RSPAMD_KEYPAIR_SIGN, RSPAMD_CRYPTOBOX_MODE_25519);
munmap (aux_data, inlen);
if (cbd->pk == NULL) {
msg_err_map ("cannot load pubkey file %s: bad pubkey",
cbd->shmem_pubkey->shm_name);
goto err;
}
cbd->stage = map_load_signature;
rspamd_http_connection_reset (cbd->conn);
write_http_request (cbd);
MAP_RELEASE (cbd, "http_callback_data");
return 0;
}
else if (cbd->stage == map_load_signature) {
/* We can now check signature */
cbd->shmem_sig = rspamd_http_message_shmem_ref (msg);
cbd->sig_len = msg->body_buf.len;
aux_data = rspamd_shmem_xmap (cbd->shmem_sig->shm_name,
PROT_READ, &inlen);
if (aux_data == NULL) {
msg_err_map ("cannot map signature file %s: %s",
cbd->shmem_sig->shm_name, strerror (errno));
goto err;
}
if (inlen < cbd->sig_len) {
msg_err_map ("cannot map pubkey file %s: %s",
cbd->shmem_pubkey->shm_name, strerror (errno));
munmap (aux_data, inlen);
goto err;
}
in = rspamd_shmem_xmap (cbd->shmem_data->shm_name, PROT_READ, &dlen);
if (in == NULL) {
msg_err_map ("cannot read tempfile %s: %s",
cbd->shmem_data->shm_name,
strerror (errno));
munmap (aux_data, inlen);
goto err;
}
if (!rspamd_map_check_sig_pk_mem (aux_data, cbd->sig_len, map, in,
cbd->data_len, cbd->pk)) {
munmap (aux_data, inlen);
munmap (in, dlen);
goto err;
}
munmap (in, dlen);
}
read_data:
g_assert (cbd->shmem_data != NULL);
in = rspamd_shmem_xmap (cbd->shmem_data->shm_name, PROT_READ, &dlen);
if (in == NULL) {
msg_err_map ("cannot read tempfile %s: %s",
cbd->shmem_data->shm_name,
strerror (errno));
goto err;
}
map->read_callback (in, cbd->data_len, &cbd->periodic->cbdata, TRUE);
msg_info_map ("read map data from %s", cbd->data->host);
/*
* We know that a map is in the locked state
*/
if (g_atomic_int_compare_and_exchange (&map->cache->available, 0, 1)) {
/* Store cached data */
struct rspamd_http_map_cached_cbdata *cache_cbd;
struct timeval tv;
rspamd_strlcpy (map->cache->shmem_name, cbd->shmem_data->shm_name,
sizeof (map->cache->shmem_name));
map->cache->len = cbd->data_len;
map->cache->last_checked = cbd->data->last_checked;
cache_cbd = g_slice_alloc0 (sizeof (*cache_cbd));
cache_cbd->shm = cbd->shmem_data;
cache_cbd->map = map;
MAP_RETAIN (cache_cbd->shm, "shmem_data");
event_set (&cache_cbd->timeout, -1, EV_TIMEOUT, rspamd_map_cache_cb,
cache_cbd);
event_base_set (cbd->ev_base, &cache_cbd->timeout);
double_to_tv (map->poll_timeout, &tv);
event_add (&cache_cbd->timeout, &tv);
}
cbd->periodic->cur_backend ++;
munmap (in, dlen);
rspamd_map_periodic_callback (-1, EV_TIMEOUT, cbd->periodic);
}
else if (msg->code == 304 && (cbd->check && cbd->stage == map_load_file)) {
msg_debug_map ("data is not modified for server %s",
cbd->data->host);
if (msg->last_modified) {
cbd->data->last_checked = msg->last_modified;
}
else {
cbd->data->last_checked = msg->date;
}
cbd->periodic->cur_backend ++;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, cbd->periodic);
}
else {
msg_info_map ("cannot load map %s from %s: HTTP error %d",
bk->uri, cbd->data->host, msg->code);
}
MAP_RELEASE (cbd, "http_callback_data");
return 0;
err:
cbd->periodic->errored = 1;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, cbd->periodic);
MAP_RELEASE (cbd, "http_callback_data");
return 0;
}
/**
* Async HTTP callback
*/
static void
rspamd_map_common_http_callback (struct rspamd_map *map, struct rspamd_map_backend *bk,
struct map_periodic_cbdata *periodic, gboolean check)
{
struct http_map_data *data;
struct http_callback_data *cbd;
gchar tmpbuf[PATH_MAX];
data = bk->data.hd;
cbd = g_slice_alloc0 (sizeof (struct http_callback_data));
rspamd_snprintf (tmpbuf, sizeof (tmpbuf),
"%s" G_DIR_SEPARATOR_S "rspamd_map%d-XXXXXX",
map->cfg->temp_dir, map->id);
cbd->out_fd = mkstemp (tmpbuf);
if (cbd->out_fd == -1) {
msg_err_map ("cannot create tempfile: %s", strerror (errno));
g_atomic_int_set (map->locked, 0);
g_slice_free1 (sizeof (*cbd), cbd);
periodic->errored = TRUE;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, periodic);
return;
}
cbd->tmpfile = g_strdup (tmpbuf);
cbd->ev_base = map->ev_base;
cbd->map = map;
cbd->data = data;
cbd->fd = -1;
cbd->check = check;
cbd->periodic = periodic;
MAP_RETAIN (periodic);
cbd->bk = bk;
MAP_RETAIN (bk);
cbd->stage = map_resolve_host2;
double_to_tv (map->cfg->map_timeout, &cbd->tv);
REF_INIT_RETAIN (cbd, free_http_cbdata);
msg_debug_map ("%s map data from %s", check ? "checking" : "reading",
data->host);
/* Send both A and AAAA requests */
if (map->r->r) {
if (rdns_make_request_full (map->r->r, rspamd_map_dns_callback, cbd,
map->cfg->dns_timeout, map->cfg->dns_retransmits, 1,
data->host, RDNS_REQUEST_A)) {
MAP_RETAIN (cbd);
}
if (rdns_make_request_full (map->r->r, rspamd_map_dns_callback, cbd,
map->cfg->dns_timeout, map->cfg->dns_retransmits, 1,
data->host, RDNS_REQUEST_AAAA)) {
MAP_RETAIN (cbd);
}
map->dtor = free_http_cbdata_dtor;
map->dtor_data = cbd;
}
else {
msg_warn_map ("cannot load map: DNS resolver is not initialized");
cbd->periodic->errored = TRUE;
}
/* We don't need own ref as it is now ref counted by DNS handlers */
MAP_RELEASE (cbd);
}
static int
http_map_finish (struct rspamd_http_connection *conn,
struct rspamd_http_message *msg)
{
struct http_callback_data *cbd = conn->ud;
struct rspamd_map *map;
struct rspamd_map_backend *bk;
char fpath[PATH_MAX];
guchar *aux_data, *in = NULL;
gsize inlen = 0;
struct stat st;
map = cbd->map;
bk = cbd->bk;
if (msg->code == 200) {
if (cbd->check) {
cbd->periodic->need_modify = TRUE;
/* Reset the whole chain */
cbd->periodic->cur_backend = 0;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, cbd->periodic);
MAP_RELEASE (cbd);
return 0;
}
if (cbd->stage == map_load_file) {
if (msg->last_modified) {
cbd->data->last_checked = msg->last_modified;
}
else {
cbd->data->last_checked = msg->date;
}
/* Maybe we need to check signature ? */
if (bk->is_signed) {
close (cbd->out_fd);
if (bk->trusted_pubkey) {
/* No need to load key */
cbd->stage = map_load_signature;
cbd->pk = rspamd_pubkey_ref (bk->trusted_pubkey);
rspamd_snprintf (fpath, sizeof (fpath), "%s.sig",
cbd->tmpfile);
}
else {
rspamd_snprintf (fpath, sizeof (fpath), "%s.pub",
cbd->tmpfile);
cbd->stage = map_load_pubkey;
}
cbd->out_fd = rspamd_file_xopen (fpath, O_RDWR|O_CREAT, 00644);
if (cbd->out_fd == -1) {
msg_err_map ("cannot open pubkey file %s for writing: %s",
fpath, strerror (errno));
goto err;
}
rspamd_http_connection_reset (cbd->conn);
write_http_request (cbd);
MAP_RELEASE (cbd);
return 0;
}
else {
/* Unsinged version - just open file */
in = rspamd_file_xmap (cbd->tmpfile, PROT_READ, &inlen);
if (in == NULL) {
msg_err_map ("cannot read tempfile %s: %s", cbd->tmpfile,
strerror (errno));
goto err;
}
}
}
else if (cbd->stage == map_load_pubkey) {
/* We now can load pubkey */
(void)lseek (cbd->out_fd, 0, SEEK_SET);
if (fstat (cbd->out_fd, &st) == -1) {
msg_err_map ("cannot stat pubkey file %s: %s",
fpath, strerror (errno));
goto err;
}
aux_data = mmap (NULL, st.st_size, PROT_READ, MAP_SHARED,
cbd->out_fd, 0);
close (cbd->out_fd);
cbd->out_fd = -1;
if (aux_data == MAP_FAILED) {
msg_err_map ("cannot map pubkey file %s: %s",
fpath, strerror (errno));
goto err;
}
cbd->pk = rspamd_pubkey_from_base32 (aux_data, st.st_size,
RSPAMD_KEYPAIR_SIGN, RSPAMD_CRYPTOBOX_MODE_25519);
munmap (aux_data, st.st_size);
if (cbd->pk == NULL) {
msg_err_map ("cannot load pubkey file %s: bad pubkey",
fpath);
goto err;
}
rspamd_snprintf (fpath, sizeof (fpath), "%s.sig", cbd->tmpfile);
cbd->out_fd = rspamd_file_xopen (fpath, O_RDWR|O_CREAT, 00644);
if (cbd->out_fd == -1) {
msg_err_map ("cannot open signature file %s for writing: %s",
fpath, strerror (errno));
goto err;
}
cbd->stage = map_load_signature;
rspamd_http_connection_reset (cbd->conn);
write_http_request (cbd);
MAP_RELEASE (cbd);
return 0;
}
else if (cbd->stage == map_load_signature) {
/* We can now check signature */
close (cbd->out_fd);
cbd->out_fd = -1;
in = rspamd_file_xmap (cbd->tmpfile, PROT_READ, &inlen);
if (in == NULL) {
msg_err_map ("cannot read tempfile %s: %s", cbd->tmpfile,
strerror (errno));
goto err;
}
if (!rspamd_map_check_sig_pk (cbd->tmpfile, map, in, inlen, cbd->pk)) {
goto err;
}
}
g_assert (in != NULL);
map->read_callback (in, inlen, &cbd->periodic->cbdata, TRUE);
msg_info_map ("read map data from %s", cbd->data->host);
cbd->periodic->cur_backend ++;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, cbd->periodic);
}
else if (msg->code == 304 && (cbd->check && cbd->stage == map_load_file)) {
msg_debug_map ("data is not modified for server %s",
cbd->data->host);
if (msg->last_modified) {
cbd->data->last_checked = msg->last_modified;
}
else {
cbd->data->last_checked = msg->date;
}
}
else {
msg_info_map ("cannot load map %s from %s: HTTP error %d",
bk->uri, cbd->data->host, msg->code);
}
MAP_RELEASE (cbd);
return 0;
err:
cbd->periodic->errored = 1;
rspamd_map_periodic_callback (-1, EV_TIMEOUT, cbd->periodic);
MAP_RELEASE (cbd);
return 0;
}
