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/*-
* Copyright 2019 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "http_context.h"
#include "http_private.h"
#include "keypair.h"
#include "keypairs_cache.h"
#include "cfg_file.h"
#include "contrib/libottery/ottery.h"
#include "rspamd.h"
static struct rspamd_http_context *default_ctx = NULL;
static void
rspamd_http_context_client_rotate_ev (gint fd, short what, void *arg)
{
struct timeval rot_tv;
struct rspamd_http_context *ctx = arg;
gpointer kp;
double_to_tv (ctx->config.client_key_rotate_time, &rot_tv);
rot_tv.tv_sec += ottery_rand_range (rot_tv.tv_sec);
event_del (&ctx->client_rotate_ev);
event_add (&ctx->client_rotate_ev, &rot_tv);
kp = ctx->client_kp;
ctx->client_kp = rspamd_keypair_new (RSPAMD_KEYPAIR_KEX,
RSPAMD_CRYPTOBOX_MODE_25519);
rspamd_keypair_unref (kp);
}
static struct rspamd_http_context*
rspamd_http_context_new_default (struct rspamd_config *cfg,
struct event_base *ev_base)
{
struct rspamd_http_context *ctx;
static const int default_kp_size = 1024;
static const gdouble default_rotate_time = 120;
static const gchar *default_user_agent = "rspamd-" RSPAMD_VERSION_FULL;
ctx = g_malloc0 (sizeof (*ctx));
ctx->config.kp_cache_size_client = default_kp_size;
ctx->config.kp_cache_size_server = default_kp_size;
ctx->config.client_key_rotate_time = default_rotate_time;
ctx->config.user_agent = default_user_agent;
if (cfg) {
ctx->ssl_ctx = cfg->libs_ctx->ssl_ctx;
ctx->ssl_ctx_noverify = cfg->libs_ctx->ssl_ctx_noverify;
}
else {
ctx->ssl_ctx = rspamd_init_ssl_ctx ();
ctx->ssl_ctx_noverify = rspamd_init_ssl_ctx_noverify ();
}
ctx->ev_base = ev_base;
return ctx;
}
static void
rspamd_http_context_init (struct rspamd_http_context *ctx)
{
if (ctx->config.kp_cache_size_client > 0) {
ctx->client_kp_cache = rspamd_keypair_cache_new (ctx->config.kp_cache_size_client);
}
if (ctx->config.kp_cache_size_client > 0) {
ctx->client_kp_cache = rspamd_keypair_cache_new (ctx->config.kp_cache_size_client);
}
if (ctx->config.client_key_rotate_time > 0 && ctx->ev_base) {
struct timeval tv;
double jittered = rspamd_time_jitter (ctx->config.client_key_rotate_time,
0);
double_to_tv (jittered, &tv);
event_set (&ctx->client_rotate_ev, -1, EV_TIMEOUT,
rspamd_http_context_client_rotate_ev, ctx);
event_base_set (ctx->ev_base, &ctx->client_rotate_ev);
event_add (&ctx->client_rotate_ev, &tv);
}
default_ctx = ctx;
}
struct rspamd_http_context*
rspamd_http_context_create (struct rspamd_config *cfg,
struct event_base *ev_base)
{
struct rspamd_http_context *ctx;
const ucl_object_t *http_obj;
ctx = rspamd_http_context_new_default (cfg, ev_base);
http_obj = ucl_object_lookup (cfg->rcl_obj, "http");
if (http_obj) {
const ucl_object_t *server_obj, *client_obj;
client_obj = ucl_object_lookup (http_obj, "client");
if (client_obj) {
const ucl_object_t *kp_size;
kp_size = ucl_object_lookup (client_obj, "cache_size");
if (kp_size) {
ctx->config.kp_cache_size_client = ucl_object_toint (kp_size);
}
const ucl_object_t *rotate_time;
rotate_time = ucl_object_lookup (client_obj, "rotate_time");
if (rotate_time) {
ctx->config.client_key_rotate_time = ucl_object_todouble (rotate_time);
}
const ucl_object_t *user_agent;
user_agent = ucl_object_lookup (client_obj, "user_agent");
if (user_agent) {
ctx->config.user_agent = ucl_object_tostring (user_agent);
if (ctx->config.user_agent && strlen (ctx->config.user_agent) == 0) {
ctx->config.user_agent = NULL;
}
}
}
server_obj = ucl_object_lookup (http_obj, "server");
if (server_obj) {
const ucl_object_t *kp_size;
kp_size = ucl_object_lookup (server_obj, "cache_size");
if (kp_size) {
ctx->config.kp_cache_size_server = ucl_object_toint (kp_size);
}
}
}
rspamd_http_context_init (ctx);
return ctx;
}
void
rspamd_http_context_free (struct rspamd_http_context *ctx)
{
if (ctx == default_ctx) {
default_ctx = NULL;
}
if (ctx->client_kp_cache) {
rspamd_keypair_cache_destroy (ctx->client_kp_cache);
}
if (ctx->server_kp_cache) {
rspamd_keypair_cache_destroy (ctx->server_kp_cache);
}
if (ctx->config.client_key_rotate_time > 0) {
/* Event is removed on base event loop termination */
/* event_del (&ctx->client_rotate_ev); */
if (ctx->client_kp) {
rspamd_keypair_unref (ctx->client_kp);
}
}
g_free (ctx);
}
struct rspamd_http_context*
rspamd_http_context_create_config (struct rspamd_http_context_cfg *cfg,
struct event_base *ev_base)
{
struct rspamd_http_context *ctx;
ctx = rspamd_http_context_new_default (NULL, ev_base);
memcpy (&ctx->config, cfg, sizeof (*cfg));
rspamd_http_context_init (ctx);
return ctx;
}
struct rspamd_http_context*
rspamd_http_context_default (void)
{
g_assert (default_ctx != NULL);
return default_ctx;
}
gint32
rspamd_keep_alive_key_hash (struct rspamd_keepalive_hash_key k)
{
gint32 h;
h = rspamd_inet_address_port_hash (k.addr);
if (k.host) {
h = rspamd_cryptobox_fast_hash (k.host, strlen (k.host), h);
}
return h;
}
bool
rspamd_keep_alive_key_equal (struct rspamd_keepalive_hash_key k1,
struct rspamd_keepalive_hash_key k2)
{
if (k1.host && k2.host) {
if (rspamd_inet_address_port_equal (k1.addr, k2.addr)) {
return strcmp (k1.host, k2.host);
}
}
else if (!k1.host && !k2.host) {
return rspamd_inet_address_port_equal (k1.addr, k2.addr);
}
/* One has host and another has no host */
return false;
}
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