static void
rspamd_map_dns_callback (struct rdns_reply *reply, void *arg)
{
struct http_callback_data *cbd = arg;
struct rspamd_map *map;
guint flags = RSPAMD_HTTP_CLIENT_SIMPLE|RSPAMD_HTTP_CLIENT_SHARED;
map = cbd->map;
if (reply->code == RDNS_RC_NOERROR) {
/*
* We just get the first address hoping that a resolver performs
* round-robin rotation well
*/
if (cbd->addr == NULL) {
cbd->addr = rspamd_inet_address_from_rnds (reply->entries);
if (cbd->addr != NULL) {
rspamd_inet_address_set_port (cbd->addr, cbd->data->port);
/* Try to open a socket */
cbd->fd = rspamd_inet_address_connect (cbd->addr, SOCK_STREAM,
TRUE);
if (cbd->fd != -1) {
cbd->stage = map_load_file;
cbd->conn = rspamd_http_connection_new (NULL,
http_map_error,
http_map_finish,
flags,
RSPAMD_HTTP_CLIENT,
NULL,
cbd->map->cfg->libs_ctx->ssl_ctx);
write_http_request (cbd);
}
else {
rspamd_inet_address_destroy (cbd->addr);
cbd->addr = NULL;
}
}
}
}
else if (cbd->stage < map_load_file) {
if (cbd->stage == map_resolve_host2) {
/* We have still one request pending */
cbd->stage = map_resolve_host1;
}
else {
/* We could not resolve host, so cowardly fail here */
msg_err_map ("cannot resolve %s", cbd->data->host);
}
}
MAP_RELEASE (cbd, "http_callback_data");
}
/**
* Async HTTP callback
*/
static void
http_callback (gint fd, short what, void *ud)
{
struct rspamd_map *map = ud;
struct http_map_data *data;
gint sock;
struct http_callback_data *cbd;
rspamd_mempool_t *pool;
data = map->map_data;
pool = map->pool;
if (g_atomic_int_get (map->locked)) {
msg_info_pool (
"don't try to reread map as it is locked by other process, will reread it later");
if (data->conn->ud == NULL) {
jitter_timeout_event (map, TRUE, TRUE);
}
else {
jitter_timeout_event (map, TRUE, FALSE);
}
return;
}
g_atomic_int_inc (map->locked);
jitter_timeout_event (map, FALSE, FALSE);
/* Connect asynced */
if ((sock = connect_http (map, data, TRUE)) == -1) {
g_atomic_int_set (map->locked, 0);
return;
}
else {
/* Plan event */
cbd = g_slice_alloc (sizeof (struct http_callback_data));
cbd->ev_base = map->ev_base;
cbd->map = map;
cbd->data = data;
cbd->remain_buf = NULL;
cbd->cbdata.state = 0;
cbd->cbdata.prev_data = *cbd->map->user_data;
cbd->cbdata.cur_data = NULL;
cbd->cbdata.map = cbd->map;
cbd->tv.tv_sec = HTTP_CONNECT_TIMEOUT;
cbd->tv.tv_usec = 0;
cbd->fd = sock;
data->conn->ud = cbd;
msg_debug_pool ("reading map data from %s", data->host);
write_http_request (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;
rspamd_mempool_t *pool;
char fpath[PATH_MAX];
guchar *aux_data, *in = NULL;
gsize inlen = 0;
struct stat st;
map = cbd->map;
pool = cbd->map->pool;
if (msg->code == 200) {
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 (map->is_signed) {
close (cbd->out_fd);
if (map->trusted_pubkey) {
/* No need to load key */
cbd->stage = map_load_signature;
cbd->pk = rspamd_pubkey_ref (map->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_pool ("cannot open pubkey file %s for writing: %s",
fpath, strerror (errno));
goto end;
}
rspamd_http_connection_reset (cbd->conn);
write_http_request (cbd);
goto end;
}
else {
/* Unsinged version - just open file */
in = rspamd_file_xmap (cbd->tmpfile, PROT_READ, &inlen);
if (in == NULL) {
msg_err_pool ("cannot read tempfile %s: %s", cbd->tmpfile,
strerror (errno));
goto end;
}
}
}
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_pool ("cannot stat pubkey file %s: %s",
fpath, strerror (errno));
goto end;
}
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_pool ("cannot map pubkey file %s: %s",
fpath, strerror (errno));
goto end;
}
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_pool ("cannot load pubkey file %s: bad pubkey",
fpath);
goto end;
}
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_pool ("cannot open signature file %s for writing: %s",
fpath, strerror (errno));
goto end;
}
cbd->stage = map_load_signature;
rspamd_http_connection_reset (cbd->conn);
write_http_request (cbd);
goto end;
}
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_pool ("cannot read tempfile %s: %s", cbd->tmpfile,
strerror (errno));
goto end;
}
if (!rspamd_map_check_sig_pk (cbd->tmpfile, map, in, inlen, cbd->pk)) {
goto end;
}
}
g_assert (in != NULL);
map->read_callback (map->pool, in, inlen, &cbd->cbdata, TRUE);
map->fin_callback (map->pool, &cbd->cbdata);
*map->user_data = cbd->cbdata.cur_data;
msg_info_pool ("read map data from %s", cbd->data->host);
}
else if (msg->code == 304 && cbd->stage == map_load_file) {
msg_debug_pool ("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_pool ("cannot load map %s from %s: HTTP error %d",
map->uri, cbd->data->host, msg->code);
}
end:
REF_RELEASE (cbd);
return 0;
}
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;
}
