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|
/*-
* Copyright 2016 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 "config.h"
#include "rspamd.h"
#include "stat_internal.h"
#include "upstream.h"
#include "lua/lua_common.h"
#ifdef WITH_HIREDIS
#include "hiredis.h"
#include "adapters/libevent.h"
#include "ref.h"
#define REDIS_CTX(p) (struct redis_stat_ctx *)(p)
#define REDIS_RUNTIME(p) (struct redis_stat_runtime *)(p)
#define REDIS_BACKEND_TYPE "redis"
#define REDIS_DEFAULT_PORT 6379
#define REDIS_DEFAULT_OBJECT "%s%l"
#define REDIS_DEFAULT_USERS_OBJECT "%s%l%r"
#define REDIS_DEFAULT_TIMEOUT 0.5
#define REDIS_STAT_TIMEOUT 30
struct redis_stat_ctx {
struct rspamd_statfile_config *stcf;
struct upstream_list *read_servers;
struct upstream_list *write_servers;
struct rspamd_stat_async_elt *stat_elt;
const gchar *redis_object;
const gchar *password;
const gchar *dbname;
gdouble timeout;
gboolean enable_users;
gint cbref_user;
};
enum rspamd_redis_connection_state {
RSPAMD_REDIS_DISCONNECTED = 0,
RSPAMD_REDIS_CONNECTED,
RSPAMD_REDIS_REQUEST_SENT,
RSPAMD_REDIS_TIMEDOUT,
RSPAMD_REDIS_TERMINATED
};
struct redis_stat_runtime {
struct redis_stat_ctx *ctx;
struct rspamd_task *task;
struct upstream *selected;
struct event timeout_event;
GArray *results;
struct rspamd_statfile_config *stcf;
gchar *redis_object_expanded;
redisAsyncContext *redis;
guint64 learned;
gint id;
gboolean has_event;
};
/* Used to get statistics from redis */
struct rspamd_redis_stat_cbdata;
struct rspamd_redis_stat_elt {
struct redis_stat_ctx *ctx;
struct rspamd_stat_async_elt *async;
struct event_base *ev_base;
ucl_object_t *stat;
struct rspamd_redis_stat_cbdata *cbdata;
};
struct rspamd_redis_stat_cbdata {
struct rspamd_redis_stat_elt *elt;
redisAsyncContext *redis;
ucl_object_t *cur;
GPtrArray *cur_keys;
struct upstream *selected;
guint inflight;
gboolean wanna_die;
};
#define GET_TASK_ELT(task, elt) (task == NULL ? NULL : (task)->elt)
static GQuark
rspamd_redis_stat_quark (void)
{
return g_quark_from_static_string ("redis-statistics");
}
/*
* Non-static for lua unit testing
*/
gsize
rspamd_redis_expand_object (const gchar *pattern,
struct redis_stat_ctx *ctx,
struct rspamd_task *task,
gchar **target)
{
gsize tlen = 0;
const gchar *p = pattern, *elt;
gchar *d, *end;
enum {
just_char,
percent_char,
mod_char
} state = just_char;
struct rspamd_statfile_config *stcf;
lua_State *L = NULL;
struct rspamd_task **ptask;
GString *tb;
const gchar *rcpt = NULL;
gint err_idx;
g_assert (ctx != NULL);
stcf = ctx->stcf;
if (task) {
L = task->cfg->lua_state;
}
if (ctx->enable_users) {
if (ctx->cbref_user == -1) {
rcpt = rspamd_task_get_principal_recipient (task);
}
else if (L) {
/* Execute lua function to get userdata */
lua_pushcfunction (L, &rspamd_lua_traceback);
err_idx = lua_gettop (L);
lua_rawgeti (L, LUA_REGISTRYINDEX, ctx->cbref_user);
ptask = lua_newuserdata (L, sizeof (struct rspamd_task *));
*ptask = task;
rspamd_lua_setclass (L, "rspamd{task}", -1);
if (lua_pcall (L, 1, 1, err_idx) != 0) {
tb = lua_touserdata (L, -1);
msg_err_task ("call to user extraction script failed: %v", tb);
g_string_free (tb, TRUE);
}
else {
rcpt = rspamd_mempool_strdup (task->task_pool, lua_tostring (L, -1));
}
/* Result + error function */
lua_pop (L, 2);
}
if (rcpt) {
rspamd_mempool_set_variable (task->task_pool, "stat_user",
(gpointer)rcpt, NULL);
}
}
/* Length calculation */
while (*p) {
switch (state) {
case just_char:
if (*p == '%') {
state = percent_char;
}
else {
tlen ++;
}
p ++;
break;
case percent_char:
switch (*p) {
case '%':
tlen ++;
state = just_char;
break;
case 'u':
elt = GET_TASK_ELT (task, user);
if (elt) {
tlen += strlen (elt);
}
break;
case 'r':
if (rcpt == NULL) {
elt = rspamd_task_get_principal_recipient (task);
}
else {
elt = rcpt;
}
if (elt) {
tlen += strlen (elt);
}
break;
case 'l':
if (stcf->label) {
tlen += strlen (stcf->label);
}
break;
case 's':
if (stcf->symbol) {
tlen += strlen (stcf->symbol);
}
break;
default:
state = just_char;
tlen ++;
break;
}
if (state == percent_char) {
state = mod_char;
}
p ++;
break;
case mod_char:
switch (*p) {
case 'd':
p ++;
state = just_char;
break;
default:
state = just_char;
break;
}
break;
}
}
if (target == NULL || task == NULL) {
return tlen;
}
*target = rspamd_mempool_alloc (task->task_pool, tlen + 1);
d = *target;
end = d + tlen + 1;
d[tlen] = '\0';
p = pattern;
state = just_char;
/* Expand string */
while (*p && d < end) {
switch (state) {
case just_char:
if (*p == '%') {
state = percent_char;
}
else {
*d++ = *p;
}
p ++;
break;
case percent_char:
switch (*p) {
case '%':
*d++ = *p;
state = just_char;
break;
case 'u':
elt = GET_TASK_ELT (task, user);
if (elt) {
d += rspamd_strlcpy (d, elt, end - d);
}
break;
case 'r':
if (rcpt == NULL) {
elt = rspamd_task_get_principal_recipient (task);
}
else {
elt = rcpt;
}
if (elt) {
d += rspamd_strlcpy (d, elt, end - d);
}
break;
case 'l':
if (stcf->label) {
d += rspamd_strlcpy (d, stcf->label, end - d);
}
break;
case 's':
if (stcf->symbol) {
d += rspamd_strlcpy (d, stcf->symbol, end - d);
}
break;
default:
state = just_char;
*d++ = *p;
break;
}
if (state == percent_char) {
state = mod_char;
}
p ++;
break;
case mod_char:
switch (*p) {
case 'd':
/* TODO: not supported yet */
p ++;
state = just_char;
break;
default:
state = just_char;
break;
}
break;
}
}
return tlen;
}
static void
rspamd_redis_maybe_auth (struct redis_stat_ctx *ctx, redisAsyncContext *redis)
{
if (ctx->password) {
redisAsyncCommand (redis, NULL, NULL, "AUTH %s", ctx->password);
}
if (ctx->dbname) {
redisAsyncCommand (redis, NULL, NULL, "SELECT %s", ctx->dbname);
}
}
static rspamd_fstring_t *
rspamd_redis_tokens_to_query (struct rspamd_task *task, GPtrArray *tokens,
const gchar *arg0, const gchar *arg1, gboolean learn, gint idx,
gboolean intvals)
{
rspamd_fstring_t *out;
rspamd_token_t *tok;
gchar n0[64], n1[64];
guint i, l0, l1, larg0, larg1;
guint64 num;
g_assert (tokens != NULL);
larg0 = strlen (arg0);
larg1 = strlen (arg1);
out = rspamd_fstring_sized_new (1024);
if (!learn) {
rspamd_printf_fstring (&out, ""
"*%d\r\n"
"$%d\r\n"
"%s\r\n"
"$%d\r\n"
"%s\r\n",
(tokens->len + 2),
larg0, arg0,
larg1, arg1);
}
for (i = 0; i < tokens->len; i ++) {
tok = g_ptr_array_index (tokens, i);
memcpy (&num, tok->data, sizeof (num));
if (learn) {
rspamd_printf_fstring (&out, ""
"*4\r\n"
"$%d\r\n"
"%s\r\n"
"$%d\r\n"
"%s\r\n",
larg0, arg0,
larg1, arg1);
l0 = rspamd_snprintf (n0, sizeof (n0), "%uL", num);
if (intvals) {
l1 = rspamd_snprintf (n1, sizeof (n1), "%L",
(gint64)tok->values[idx]);
}
else {
l1 = rspamd_snprintf (n1, sizeof (n1), "%f",
tok->values[idx]);
}
rspamd_printf_fstring (&out, ""
"$%d\r\n"
"%s\r\n"
"$%d\r\n"
"%s\r\n", l0, n0, l1, n1);
}
else {
l0 = rspamd_snprintf (n0, sizeof (n0), "%uL", num);
rspamd_printf_fstring (&out, ""
"$%d\r\n"
"%s\r\n", l0, n0);
}
}
return out;
}
static void
rspamd_redis_async_cbdata_cleanup (struct rspamd_redis_stat_cbdata *cbdata)
{
guint i;
gchar *k;
if (cbdata && !cbdata->wanna_die) {
/* Avoid double frees */
cbdata->wanna_die = TRUE;
redisAsyncFree (cbdata->redis);
for (i = 0; i < cbdata->cur_keys->len; i ++) {
k = g_ptr_array_index (cbdata->cur_keys, i);
g_free (k);
}
g_ptr_array_free (cbdata->cur_keys, TRUE);
if (cbdata->elt) {
cbdata->elt->cbdata = NULL;
/* Re-enable parent event */
cbdata->elt->async->enabled = TRUE;
/* Replace ucl object */
if (cbdata->cur) {
if (cbdata->elt->stat) {
ucl_object_unref (cbdata->elt->stat);
}
cbdata->elt->stat = cbdata->cur;
cbdata->cur = NULL;
}
}
if (cbdata->cur) {
ucl_object_unref (cbdata->cur);
}
g_slice_free1 (sizeof (*cbdata), cbdata);
}
}
/* Called when we get number of learns for a specific key */
static void
rspamd_redis_stat_learns (redisAsyncContext *c, gpointer r, gpointer priv)
{
struct rspamd_redis_stat_cbdata *cbdata = priv;
redisReply *reply = r;
ucl_object_t *obj;
gulong num = 0;
if (cbdata->wanna_die) {
return;
}
cbdata->inflight --;
if (c->err == 0 && r != NULL) {
if (G_LIKELY (reply->type == REDIS_REPLY_INTEGER)) {
num = reply->integer;
}
else if (reply->type == REDIS_REPLY_STRING) {
rspamd_strtoul (reply->str, reply->len, &num);
}
obj = (ucl_object_t *)ucl_object_lookup (cbdata->cur, "revision");
if (obj) {
obj->value.iv += num;
}
}
if (cbdata->inflight == 0) {
rspamd_redis_async_cbdata_cleanup (cbdata);
}
}
/* Called when we get number of elements for a specific key */
static void
rspamd_redis_stat_key (redisAsyncContext *c, gpointer r, gpointer priv)
{
struct rspamd_redis_stat_cbdata *cbdata = priv;
redisReply *reply = r;
ucl_object_t *obj;
glong num = 0;
if (cbdata->wanna_die) {
return;
}
cbdata->inflight --;
if (c->err == 0 && r != NULL) {
if (G_LIKELY (reply->type == REDIS_REPLY_INTEGER)) {
num = reply->integer;
}
else if (reply->type == REDIS_REPLY_STRING) {
rspamd_strtol (reply->str, reply->len, &num);
}
if (num < 0) {
msg_err ("bad learns count: %L", (gint64)num);
num = 0;
}
obj = (ucl_object_t *)ucl_object_lookup (cbdata->cur, "used");
if (obj) {
obj->value.iv += num;
}
obj = (ucl_object_t *)ucl_object_lookup (cbdata->cur, "total");
if (obj) {
obj->value.iv += num;
}
obj = (ucl_object_t *)ucl_object_lookup (cbdata->cur, "size");
if (obj) {
/* Size of key + size of int64_t */
obj->value.iv += num * (sizeof (G_STRINGIFY (G_MAXINT64)) +
sizeof (guint64) + sizeof (gpointer));
}
}
if (cbdata->inflight == 0) {
rspamd_redis_async_cbdata_cleanup (cbdata);
}
}
/* Called when we have connected to the redis server and got keys to check */
static void
rspamd_redis_stat_keys (redisAsyncContext *c, gpointer r, gpointer priv)
{
struct rspamd_redis_stat_cbdata *cbdata = priv;
redisReply *reply = r, *elt;
gchar **pk, *k;
guint i, processed = 0;
if (cbdata->wanna_die) {
return;
}
cbdata->inflight --;
if (c->err == 0 && r != NULL) {
if (reply->type == REDIS_REPLY_ARRAY) {
g_ptr_array_set_size (cbdata->cur_keys, reply->elements);
for (i = 0; i < reply->elements; i ++) {
elt = reply->element[i];
if (elt->type == REDIS_REPLY_STRING) {
pk = (gchar **)&g_ptr_array_index (cbdata->cur_keys, i);
*pk = g_malloc (elt->len + 1);
rspamd_strlcpy (*pk, elt->str, elt->len + 1);
processed ++;
}
}
if (processed) {
for (i = 0; i < cbdata->cur_keys->len; i ++) {
k = (gchar *)g_ptr_array_index (cbdata->cur_keys, i);
if (k) {
redisAsyncCommand (cbdata->redis, rspamd_redis_stat_key,
cbdata,
"HLEN %s",
k);
redisAsyncCommand (cbdata->redis, rspamd_redis_stat_learns,
cbdata,
"HGET %s learns",
k);
cbdata->inflight += 2;
}
}
}
}
/* Set up the required keys */
ucl_object_insert_key (cbdata->cur,
ucl_object_typed_new (UCL_INT), "revision", 0, false);
ucl_object_insert_key (cbdata->cur,
ucl_object_typed_new (UCL_INT), "used", 0, false);
ucl_object_insert_key (cbdata->cur,
ucl_object_typed_new (UCL_INT), "total", 0, false);
ucl_object_insert_key (cbdata->cur,
ucl_object_typed_new (UCL_INT), "size", 0, false);
ucl_object_insert_key (cbdata->cur,
ucl_object_fromstring (cbdata->elt->ctx->stcf->symbol),
"symbol", 0, false);
ucl_object_insert_key (cbdata->cur, ucl_object_fromstring ("redis"),
"type", 0, false);
ucl_object_insert_key (cbdata->cur, ucl_object_fromint (0),
"languages", 0, false);
ucl_object_insert_key (cbdata->cur, ucl_object_fromint (processed),
"users", 0, false);
rspamd_upstream_ok (cbdata->selected);
}
else {
msg_err ("cannot get keys to gather stat");
rspamd_upstream_fail (cbdata->selected);
rspamd_redis_async_cbdata_cleanup (cbdata);
}
if (cbdata->inflight == 0) {
rspamd_redis_async_cbdata_cleanup (cbdata);
}
}
static void
rspamd_redis_async_stat_cb (struct rspamd_stat_async_elt *elt, gpointer d)
{
struct redis_stat_ctx *ctx;
struct rspamd_redis_stat_elt *redis_elt = elt->ud;
struct rspamd_redis_stat_cbdata *cbdata;
rspamd_inet_addr_t *addr;
g_assert (redis_elt != NULL);
ctx = redis_elt->ctx;
if (redis_elt->cbdata) {
/* We have some other process pending */
rspamd_redis_async_cbdata_cleanup (redis_elt->cbdata);
}
/* Disable further events unless needed */
elt->enabled = FALSE;
cbdata = g_slice_alloc0 (sizeof (*cbdata));
cbdata->selected = rspamd_upstream_get (ctx->read_servers,
RSPAMD_UPSTREAM_ROUND_ROBIN,
NULL,
0);
g_assert (cbdata->selected != NULL);
addr = rspamd_upstream_addr (cbdata->selected);
g_assert (addr != NULL);
cbdata->redis = redisAsyncConnect (rspamd_inet_address_to_string (addr),
rspamd_inet_address_get_port (addr));
g_assert (cbdata->redis != NULL);
redisLibeventAttach (cbdata->redis, redis_elt->ev_base);
cbdata->inflight = 1;
cbdata->cur = ucl_object_typed_new (UCL_OBJECT);
cbdata->elt = redis_elt;
cbdata->cur_keys = g_ptr_array_new ();
redis_elt->cbdata = cbdata;
/* XXX: deal with timeouts maybe */
/* Get keys in redis that match our symbol */
rspamd_redis_maybe_auth (ctx, cbdata->redis);
redisAsyncCommand (cbdata->redis, rspamd_redis_stat_keys, cbdata,
"SMEMBERS %s_keys",
ctx->stcf->symbol);
}
static void
rspamd_redis_async_stat_fin (struct rspamd_stat_async_elt *elt, gpointer d)
{
struct rspamd_redis_stat_elt *redis_elt = elt->ud;
rspamd_redis_async_cbdata_cleanup (redis_elt->cbdata);
}
/* Called on connection termination */
static void
rspamd_redis_fin (gpointer data)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (data);
redisAsyncContext *redis;
rt->has_event = FALSE;
/* Stop timeout */
if (event_get_base (&rt->timeout_event)) {
event_del (&rt->timeout_event);
}
if (rt->redis) {
redis = rt->redis;
rt->redis = NULL;
/* This calls for all callbacks pending */
redisAsyncFree (redis);
}
}
static void
rspamd_redis_fin_learn (gpointer data)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (data);
redisAsyncContext *redis;
rt->has_event = FALSE;
/* Stop timeout */
if (event_get_base (&rt->timeout_event)) {
event_del (&rt->timeout_event);
}
if (rt->redis) {
redis = rt->redis;
rt->redis = NULL;
/* This calls for all callbacks pending */
redisAsyncFree (redis);
}
}
static void
rspamd_redis_timeout (gint fd, short what, gpointer d)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (d);
struct rspamd_task *task;
redisAsyncContext *redis;
task = rt->task;
msg_err_task_check ("connection to redis server %s timed out",
rspamd_upstream_name (rt->selected));
rspamd_upstream_fail (rt->selected);
if (rt->redis) {
redis = rt->redis;
rt->redis = NULL;
/* This calls for all callbacks pending */
redisAsyncFree (redis);
}
}
/* Called when we have connected to the redis server and got stats */
static void
rspamd_redis_connected (redisAsyncContext *c, gpointer r, gpointer priv)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (priv);
redisReply *reply = r;
struct rspamd_task *task;
glong val = 0;
task = rt->task;
if (c->err == 0) {
if (r != NULL) {
if (G_LIKELY (reply->type == REDIS_REPLY_INTEGER)) {
val = reply->integer;
}
else if (reply->type == REDIS_REPLY_STRING) {
rspamd_strtol (reply->str, reply->len, &val);
}
else {
if (reply->type != REDIS_REPLY_NIL) {
msg_err_task ("bad learned type for %s: %d",
rt->stcf->symbol, reply->type);
}
val = 0;
}
if (val < 0) {
msg_warn_task ("invalid number of learns for %s: %L",
rt->stcf->symbol, val);
val = 0;
}
rt->learned = val;
msg_debug_task ("connected to redis server, tokens learned for %s: %uL",
rt->redis_object_expanded, rt->learned);
rspamd_upstream_ok (rt->selected);
}
}
else {
msg_err_task ("error getting reply from redis server %s: %s",
rspamd_upstream_name (rt->selected), c->errstr);
rspamd_upstream_fail (rt->selected);
}
}
/* Called when we have received tokens values from redis */
static void
rspamd_redis_processed (redisAsyncContext *c, gpointer r, gpointer priv)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (priv);
redisReply *reply = r, *elt;
struct rspamd_task *task;
rspamd_token_t *tok;
guint i, processed = 0, found = 0;
gulong val;
gdouble float_val;
task = rt->task;
if (c->err == 0) {
if (r != NULL) {
if (reply->type == REDIS_REPLY_ARRAY) {
if (reply->elements == task->tokens->len) {
for (i = 0; i < reply->elements; i ++) {
tok = g_ptr_array_index (task->tokens, i);
elt = reply->element[i];
if (G_LIKELY (elt->type == REDIS_REPLY_INTEGER)) {
tok->values[rt->id] = elt->integer;
found ++;
}
else if (elt->type == REDIS_REPLY_STRING) {
if (rt->stcf->clcf->flags &
RSPAMD_FLAG_CLASSIFIER_INTEGER) {
rspamd_strtoul (elt->str, elt->len, &val);
tok->values[rt->id] = val;
}
else {
float_val = strtod (elt->str, NULL);
tok->values[rt->id] = float_val;
}
found ++;
}
else {
tok->values[rt->id] = 0;
}
processed ++;
}
if (rt->stcf->is_spam) {
task->flags |= RSPAMD_TASK_FLAG_HAS_SPAM_TOKENS;
}
else {
task->flags |= RSPAMD_TASK_FLAG_HAS_HAM_TOKENS;
}
}
else {
msg_err_task_check ("got invalid length of reply vector from redis: "
"%d, expected: %d",
(gint)reply->elements,
(gint)task->tokens->len);
}
}
else {
msg_err_task_check ("got invalid reply from redis: %d",
reply->type);
}
msg_debug_task_check ("received tokens for %s: %d processed, %d found",
rt->redis_object_expanded, processed, found);
rspamd_upstream_ok (rt->selected);
}
}
else {
msg_err_task ("error getting reply from redis server %s: %s",
rspamd_upstream_name (rt->selected), c->errstr);
if (rt->redis) {
rspamd_upstream_fail (rt->selected);
}
}
if (rt->has_event) {
rspamd_session_remove_event (task->s, rspamd_redis_fin, rt);
}
}
/* Called when we have set tokens during learning */
static void
rspamd_redis_learned (redisAsyncContext *c, gpointer r, gpointer priv)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (priv);
struct rspamd_task *task;
task = rt->task;
if (c->err == 0) {
rspamd_upstream_ok (rt->selected);
}
else {
msg_err_task_check ("error getting reply from redis server %s: %s",
rspamd_upstream_name (rt->selected), c->errstr);
if (rt->redis) {
rspamd_upstream_fail (rt->selected);
}
}
if (rt->has_event) {
rspamd_session_remove_event (task->s, rspamd_redis_fin_learn, rt);
}
}
static gboolean
rspamd_redis_try_ucl (struct redis_stat_ctx *backend,
const ucl_object_t *obj,
struct rspamd_config *cfg,
const gchar *symbol)
{
const ucl_object_t *elt, *relt, *users_enabled;
const gchar *lua_script;
elt = ucl_object_lookup_any (obj, "read_servers", "servers", NULL);
if (elt == NULL) {
return FALSE;
}
backend->read_servers = rspamd_upstreams_create (cfg->ups_ctx);
if (!rspamd_upstreams_from_ucl (backend->read_servers, elt,
REDIS_DEFAULT_PORT, NULL)) {
msg_err ("statfile %s cannot get read servers configuration",
symbol);
return FALSE;
}
relt = elt;
elt = ucl_object_lookup (obj, "write_servers");
if (elt == NULL) {
/* Use read servers as write ones */
g_assert (relt != NULL);
backend->write_servers = rspamd_upstreams_create (cfg->ups_ctx);
if (!rspamd_upstreams_from_ucl (backend->write_servers, relt,
REDIS_DEFAULT_PORT, NULL)) {
msg_err ("statfile %s cannot get write servers configuration",
symbol);
return FALSE;
}
}
else {
backend->write_servers = rspamd_upstreams_create (cfg->ups_ctx);
if (!rspamd_upstreams_from_ucl (backend->write_servers, elt,
REDIS_DEFAULT_PORT, NULL)) {
msg_err ("statfile %s cannot get write servers configuration",
symbol);
rspamd_upstreams_destroy (backend->write_servers);
backend->write_servers = NULL;
}
}
elt = ucl_object_lookup (obj, "prefix");
if (elt == NULL || ucl_object_type (elt) != UCL_STRING) {
/* Default non-users statistics */
backend->redis_object = REDIS_DEFAULT_OBJECT;
/*
* Make redis backend compatible with sqlite3 backend in users settings
*/
users_enabled = ucl_object_lookup_any (obj, "per_user",
"users_enabled", NULL);
if (users_enabled != NULL) {
if (ucl_object_type (users_enabled) == UCL_BOOLEAN) {
backend->enable_users = ucl_object_toboolean (users_enabled);
backend->cbref_user = -1;
if (backend->enable_users) {
backend->redis_object = REDIS_DEFAULT_USERS_OBJECT;
}
}
else if (ucl_object_type (users_enabled) == UCL_STRING) {
lua_script = ucl_object_tostring (users_enabled);
if (luaL_dostring (cfg->lua_state, lua_script) != 0) {
msg_err_config ("cannot execute lua script for users "
"extraction: %s", lua_tostring (cfg->lua_state, -1));
}
else {
if (lua_type (cfg->lua_state, -1) == LUA_TFUNCTION) {
backend->enable_users = TRUE;
backend->cbref_user = luaL_ref (cfg->lua_state,
LUA_REGISTRYINDEX);
}
else {
msg_err_config ("lua script must return "
"function(task) and not %s",
lua_typename (cfg->lua_state, lua_type (
cfg->lua_state, -1)));
}
}
}
}
else {
backend->enable_users = FALSE;
}
}
else {
/* XXX: sanity check */
backend->redis_object = ucl_object_tostring (elt);
}
elt = ucl_object_lookup (obj, "timeout");
if (elt) {
backend->timeout = ucl_object_todouble (elt);
}
else {
backend->timeout = REDIS_DEFAULT_TIMEOUT;
}
elt = ucl_object_lookup (obj, "password");
if (elt) {
backend->password = ucl_object_tostring (elt);
}
else {
backend->password = NULL;
}
elt = ucl_object_lookup_any (obj, "db", "database", "dbname", NULL);
if (elt) {
backend->dbname = ucl_object_tostring (elt);
}
else {
backend->dbname = NULL;
}
return TRUE;
}
gpointer
rspamd_redis_init (struct rspamd_stat_ctx *ctx,
struct rspamd_config *cfg, struct rspamd_statfile *st)
{
struct redis_stat_ctx *backend;
struct rspamd_statfile_config *stf = st->stcf;
struct rspamd_redis_stat_elt *st_elt;
const ucl_object_t *obj;
gboolean ret = FALSE;
backend = g_slice_alloc0 (sizeof (*backend));
/* First search in backend configuration */
obj = ucl_object_lookup (st->classifier->cfg->opts, "backend");
if (obj != NULL && ucl_object_type (obj) == UCL_OBJECT) {
ret = rspamd_redis_try_ucl (backend, obj, cfg, stf->symbol);
}
/* Now try statfiles config */
if (!ret) {
ret = rspamd_redis_try_ucl (backend, stf->opts, cfg, stf->symbol);
}
/* Now try classifier config */
if (!ret) {
ret = rspamd_redis_try_ucl (backend, st->classifier->cfg->opts, cfg,
stf->symbol);
}
/* Now try global redis settings */
if (!ret) {
obj = ucl_object_lookup (cfg->rcl_obj, "redis");
if (obj) {
const ucl_object_t *specific_obj;
specific_obj = ucl_object_lookup (obj, "statistics");
if (specific_obj) {
ret = rspamd_redis_try_ucl (backend, specific_obj, cfg,
stf->symbol);
}
else {
ret = rspamd_redis_try_ucl (backend, obj, cfg,
stf->symbol);
}
}
}
if (!ret) {
msg_err_config ("cannot init redis backend for %s", stf->symbol);
g_slice_free1 (sizeof (*backend), backend);
return NULL;
}
stf->clcf->flags |= RSPAMD_FLAG_CLASSIFIER_INCREMENTING_BACKEND;
backend->stcf = stf;
st_elt = g_slice_alloc0 (sizeof (*st_elt));
st_elt->ev_base = ctx->ev_base;
st_elt->ctx = backend;
backend->stat_elt = rspamd_stat_ctx_register_async (
rspamd_redis_async_stat_cb,
rspamd_redis_async_stat_fin,
st_elt,
REDIS_STAT_TIMEOUT);
st_elt->async = backend->stat_elt;
return (gpointer)backend;
}
gpointer
rspamd_redis_runtime (struct rspamd_task *task,
struct rspamd_statfile_config *stcf,
gboolean learn, gpointer c)
{
struct redis_stat_ctx *ctx = REDIS_CTX (c);
struct redis_stat_runtime *rt;
struct upstream *up;
rspamd_inet_addr_t *addr;
g_assert (ctx != NULL);
g_assert (stcf != NULL);
if (learn && ctx->write_servers == NULL) {
msg_err_task ("no write servers defined for %s, cannot learn", stcf->symbol);
return NULL;
}
if (learn) {
up = rspamd_upstream_get (ctx->write_servers,
RSPAMD_UPSTREAM_MASTER_SLAVE,
NULL,
0);
}
else {
up = rspamd_upstream_get (ctx->read_servers,
RSPAMD_UPSTREAM_ROUND_ROBIN,
NULL,
0);
}
if (up == NULL) {
msg_err_task ("no upstreams reachable");
return NULL;
}
rt = rspamd_mempool_alloc0 (task->task_pool, sizeof (*rt));
rspamd_redis_expand_object (ctx->redis_object, ctx, task,
&rt->redis_object_expanded);
rt->selected = up;
rt->task = task;
rt->ctx = ctx;
rt->stcf = stcf;
addr = rspamd_upstream_addr (up);
g_assert (addr != NULL);
rt->redis = redisAsyncConnect (rspamd_inet_address_to_string (addr),
rspamd_inet_address_get_port (addr));
if (rt->redis == NULL) {
msg_err_task ("cannot connect redis");
return NULL;
}
redisLibeventAttach (rt->redis, task->ev_base);
rspamd_redis_maybe_auth (ctx, rt->redis);
return rt;
}
void
rspamd_redis_close (gpointer p)
{
struct redis_stat_ctx *ctx = REDIS_CTX (p);
if (ctx->read_servers) {
rspamd_upstreams_destroy (ctx->read_servers);
}
if (ctx->write_servers) {
rspamd_upstreams_destroy (ctx->write_servers);
}
g_slice_free1 (sizeof (*ctx), ctx);
}
gboolean
rspamd_redis_process_tokens (struct rspamd_task *task,
GPtrArray *tokens,
gint id, gpointer p)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (p);
rspamd_fstring_t *query;
struct timeval tv;
gint ret;
if (tokens == NULL || tokens->len == 0 || rt->redis == NULL) {
return FALSE;
}
rt->id = id;
if (redisAsyncCommand (rt->redis, rspamd_redis_connected, rt, "HGET %s %s",
rt->redis_object_expanded, "learns") == REDIS_OK) {
rspamd_session_add_event (task->s, rspamd_redis_fin, rt,
rspamd_redis_stat_quark ());
rt->has_event = TRUE;
if (event_get_base (&rt->timeout_event)) {
event_del (&rt->timeout_event);
}
event_set (&rt->timeout_event, -1, EV_TIMEOUT, rspamd_redis_timeout, rt);
event_base_set (task->ev_base, &rt->timeout_event);
double_to_tv (rt->ctx->timeout, &tv);
event_add (&rt->timeout_event, &tv);
query = rspamd_redis_tokens_to_query (task, tokens,
"HMGET", rt->redis_object_expanded, FALSE, -1,
rt->stcf->clcf->flags & RSPAMD_FLAG_CLASSIFIER_INTEGER);
g_assert (query != NULL);
rspamd_mempool_add_destructor (task->task_pool,
(rspamd_mempool_destruct_t)rspamd_fstring_free, query);
ret = redisAsyncFormattedCommand (rt->redis, rspamd_redis_processed, rt,
query->str, query->len);
if (ret == REDIS_OK) {
return TRUE;
}
else {
msg_err_task ("call to redis failed: %s", rt->redis->errstr);
}
}
return FALSE;
}
void
rspamd_redis_finalize_process (struct rspamd_task *task, gpointer runtime,
gpointer ctx)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (runtime);
redisAsyncContext *redis;
if (event_get_base (&rt->timeout_event)) {
event_del (&rt->timeout_event);
}
if (rt->redis) {
redis = rt->redis;
rt->redis = NULL;
redisAsyncFree (redis);
}
}
gboolean
rspamd_redis_learn_tokens (struct rspamd_task *task, GPtrArray *tokens,
gint id, gpointer p)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (p);
struct upstream *up;
rspamd_inet_addr_t *addr;
struct timeval tv;
rspamd_fstring_t *query;
const gchar *redis_cmd;
rspamd_token_t *tok;
gint ret;
up = rspamd_upstream_get (rt->ctx->write_servers,
RSPAMD_UPSTREAM_MASTER_SLAVE,
NULL,
0);
if (up == NULL) {
msg_err_task ("no upstreams reachable");
return FALSE;
}
rt->selected = up;
addr = rspamd_upstream_addr (up);
g_assert (addr != NULL);
rt->redis = redisAsyncConnect (rspamd_inet_address_to_string (addr),
rspamd_inet_address_get_port (addr));
g_assert (rt->redis != NULL);
redisLibeventAttach (rt->redis, task->ev_base);
rspamd_redis_maybe_auth (rt->ctx, rt->redis);
/*
* Add the current key to the set of learned keys
*/
redisAsyncCommand (rt->redis, NULL, NULL, "SADD %s_keys %s",
rt->stcf->symbol, rt->redis_object_expanded);
if (rt->stcf->clcf->flags & RSPAMD_FLAG_CLASSIFIER_INTEGER) {
redis_cmd = "HINCRBY";
}
else {
redis_cmd = "HINCRBYFLOAT";
}
rt->id = id;
query = rspamd_redis_tokens_to_query (task, tokens,
redis_cmd, rt->redis_object_expanded, TRUE, id,
rt->stcf->clcf->flags & RSPAMD_FLAG_CLASSIFIER_INTEGER);
g_assert (query != NULL);
/*
* XXX:
* Dirty hack: we get a token and check if it's value is -1 or 1, so
* we could understand that we are learning or unlearning
*/
tok = g_ptr_array_index (task->tokens, 0);
if (tok->values[id] > 0) {
rspamd_printf_fstring (&query, ""
"*4\r\n"
"$7\r\n"
"HINCRBY\r\n"
"$%d\r\n"
"%s\r\n"
"$6\r\n"
"learns\r\n"
"$1\r\n"
"1\r\n",
(gint)strlen (rt->redis_object_expanded),
rt->redis_object_expanded);
}
else {
rspamd_printf_fstring (&query, ""
"*4\r\n"
"$7\r\n"
"HINCRBY\r\n"
"$%d\r\n"
"%s\r\n"
"$6\r\n"
"learns\r\n"
"$2\r\n"
"-1\r\n",
(gint)strlen (rt->redis_object_expanded),
rt->redis_object_expanded);
}
rspamd_mempool_add_destructor (task->task_pool,
(rspamd_mempool_destruct_t)rspamd_fstring_free, query);
ret = redisAsyncFormattedCommand (rt->redis, rspamd_redis_learned, rt,
query->str, query->len);
if (ret == REDIS_OK) {
rspamd_session_add_event (task->s, rspamd_redis_fin_learn, rt,
rspamd_redis_stat_quark ());
rt->has_event = TRUE;
/* Set timeout */
if (event_get_base (&rt->timeout_event)) {
event_del (&rt->timeout_event);
}
event_set (&rt->timeout_event, -1, EV_TIMEOUT, rspamd_redis_timeout, rt);
event_base_set (task->ev_base, &rt->timeout_event);
double_to_tv (rt->ctx->timeout, &tv);
event_add (&rt->timeout_event, &tv);
return TRUE;
}
else {
msg_err_task ("call to redis failed: %s", rt->redis->errstr);
}
return FALSE;
}
void
rspamd_redis_finalize_learn (struct rspamd_task *task, gpointer runtime,
gpointer ctx)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (runtime);
redisAsyncContext *redis;
if (event_get_base (&rt->timeout_event)) {
event_del (&rt->timeout_event);
}
if (rt->redis) {
redis = rt->redis;
rt->redis = NULL;
redisAsyncFree (redis);
}
}
gulong
rspamd_redis_total_learns (struct rspamd_task *task, gpointer runtime,
gpointer ctx)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (runtime);
return rt->learned;
}
gulong
rspamd_redis_inc_learns (struct rspamd_task *task, gpointer runtime,
gpointer ctx)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (runtime);
/* XXX: may cause races */
return rt->learned + 1;
}
gulong
rspamd_redis_dec_learns (struct rspamd_task *task, gpointer runtime,
gpointer ctx)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (runtime);
/* XXX: may cause races */
return rt->learned + 1;
}
gulong
rspamd_redis_learns (struct rspamd_task *task, gpointer runtime,
gpointer ctx)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (runtime);
return rt->learned;
}
ucl_object_t *
rspamd_redis_get_stat (gpointer runtime,
gpointer ctx)
{
struct redis_stat_runtime *rt = REDIS_RUNTIME (runtime);
struct rspamd_redis_stat_elt *st;
redisAsyncContext *redis;
if (rt->ctx->stat_elt) {
st = rt->ctx->stat_elt->ud;
if (rt->redis) {
redis = rt->redis;
rt->redis = NULL;
redisAsyncFree (redis);
}
if (st->stat) {
return ucl_object_ref (st->stat);
}
}
return NULL;
}
gpointer
rspamd_redis_load_tokenizer_config (gpointer runtime,
gsize *len)
{
return NULL;
}
#endif
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