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/* Copyright (c) 2010-2011, Vsevolod Stakhov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "main.h"
#include "message.h"
#include "lua/lua_common.h"
extern struct rspamd_main *rspamd_main;
/**
* Return worker's control structure by its type
* @param type
* @return worker's control structure or NULL
*/
worker_t*
rspamd_get_worker_by_type (GQuark type)
{
worker_t **cur;
cur = &workers[0];
while (*cur) {
if (g_quark_from_string ((*cur)->name) == type) {
return *cur;
}
cur ++;
}
return NULL;
}
double
rspamd_set_counter (const gchar *name, guint32 value)
{
struct counter_data *cd;
double alpha;
gchar *key;
cd = rspamd_hash_lookup (rspamd_main->counters, (gpointer) name);
if (cd == NULL) {
cd = rspamd_mempool_alloc_shared (rspamd_main->counters->pool, sizeof (struct counter_data));
cd->value = value;
cd->number = 0;
key = rspamd_mempool_strdup_shared (rspamd_main->counters->pool, name);
rspamd_hash_insert (rspamd_main->counters, (gpointer) key, (gpointer) cd);
}
else {
/* Calculate new value */
rspamd_mempool_wlock_rwlock (rspamd_main->counters->lock);
alpha = 2. / (++cd->number + 1);
cd->value = cd->value * (1. - alpha) + value * alpha;
rspamd_mempool_wunlock_rwlock (rspamd_main->counters->lock);
}
return cd->value;
}
sig_atomic_t wanna_die = 0;
#ifndef HAVE_SA_SIGINFO
static void
worker_sig_handler (gint signo)
#else
static void
worker_sig_handler (gint signo, siginfo_t * info, void *unused)
#endif
{
struct timeval tv;
switch (signo) {
case SIGINT:
case SIGTERM:
if (!wanna_die) {
wanna_die = 1;
tv.tv_sec = 0;
tv.tv_usec = 0;
event_loopexit (&tv);
#ifdef WITH_GPERF_TOOLS
ProfilerStop ();
#endif
}
break;
}
}
/*
* Config reload is designed by sending sigusr2 to active workers and pending shutdown of them
*/
static void
worker_sigusr2_handler (gint fd, short what, void *arg)
{
struct rspamd_worker *worker = (struct rspamd_worker *) arg;
/* Do not accept new connections, preparing to end worker's process */
struct timeval tv;
if (!wanna_die) {
tv.tv_sec = SOFT_SHUTDOWN_TIME;
tv.tv_usec = 0;
event_del (&worker->sig_ev_usr1);
event_del (&worker->sig_ev_usr2);
rspamd_worker_stop_accept (worker);
msg_info ("worker's shutdown is pending in %d sec", SOFT_SHUTDOWN_TIME);
event_loopexit (&tv);
}
return;
}
/*
* Reopen log is designed by sending sigusr1 to active workers and pending shutdown of them
*/
static void
worker_sigusr1_handler (gint fd, short what, void *arg)
{
struct rspamd_worker *worker = (struct rspamd_worker *) arg;
reopen_log (worker->srv->logger);
return;
}
struct event_base *
rspamd_prepare_worker (struct rspamd_worker *worker, const char *name,
void (*accept_handler)(int, short, void *))
{
struct event_base *ev_base;
struct event *accept_event;
struct sigaction signals;
GList *cur;
gint listen_socket;
#ifdef WITH_PROFILER
extern void _start (void), etext (void);
monstartup ((u_long) & _start, (u_long) & etext);
#endif
gperf_profiler_init (worker->srv->cfg, name);
worker->srv->pid = getpid ();
ev_base = event_init ();
init_signals (&signals, worker_sig_handler);
sigprocmask (SIG_UNBLOCK, &signals.sa_mask, NULL);
/* Accept all sockets */
cur = worker->cf->listen_socks;
while (cur) {
listen_socket = GPOINTER_TO_INT (cur->data);
if (listen_socket != -1) {
accept_event = g_slice_alloc0 (sizeof (struct event));
event_set (accept_event, listen_socket, EV_READ | EV_PERSIST,
accept_handler, worker);
event_base_set (ev_base, accept_event);
event_add (accept_event, NULL);
worker->accept_events = g_list_prepend (worker->accept_events, accept_event);
}
cur = g_list_next (cur);
}
/* SIGUSR2 handler */
signal_set (&worker->sig_ev_usr2, SIGUSR2, worker_sigusr2_handler,
(void *) worker);
event_base_set (ev_base, &worker->sig_ev_usr2);
signal_add (&worker->sig_ev_usr2, NULL);
/* SIGUSR1 handler */
signal_set (&worker->sig_ev_usr1, SIGUSR1, worker_sigusr1_handler,
(void *) worker);
event_base_set (ev_base, &worker->sig_ev_usr1);
signal_add (&worker->sig_ev_usr1, NULL);
return ev_base;
}
void
rspamd_worker_stop_accept (struct rspamd_worker *worker)
{
GList *cur;
struct event *event;
/* Remove all events */
cur = worker->accept_events;
while (cur) {
event = cur->data;
event_del (event);
cur = g_list_next (cur);
g_slice_free1 (sizeof (struct event), event);
}
if (worker->accept_events != NULL) {
g_list_free (worker->accept_events);
}
}
void
rspamd_controller_send_error (struct rspamd_http_connection_entry *entry,
gint code,
const gchar *error_msg)
{
struct rspamd_http_message *msg;
msg = rspamd_http_new_message (HTTP_RESPONSE);
msg->date = time (NULL);
msg->code = code;
msg->body = g_string_sized_new (128);
msg->status = g_string_new (error_msg);
rspamd_printf_gstring (msg->body, "{\"error\":\"%s\"}", error_msg);
rspamd_http_connection_reset (entry->conn);
rspamd_http_connection_write_message (entry->conn, msg, NULL,
"application/json", entry, entry->conn->fd, entry->rt->ptv, entry->rt->ev_base);
entry->is_reply = TRUE;
}
void
rspamd_controller_send_string (struct rspamd_http_connection_entry *entry,
const gchar *str)
{
struct rspamd_http_message *msg;
msg = rspamd_http_new_message (HTTP_RESPONSE);
msg->date = time (NULL);
msg->code = 200;
msg->body = g_string_new (str);
rspamd_http_connection_reset (entry->conn);
rspamd_http_connection_write_message (entry->conn, msg, NULL,
"application/json", entry, entry->conn->fd, entry->rt->ptv, entry->rt->ev_base);
entry->is_reply = TRUE;
}
void
rspamd_controller_send_ucl (struct rspamd_http_connection_entry *entry,
ucl_object_t *obj)
{
struct rspamd_http_message *msg;
msg = rspamd_http_new_message (HTTP_RESPONSE);
msg->date = time (NULL);
msg->code = 200;
msg->body = g_string_sized_new (BUFSIZ);
rspamd_ucl_emit_gstring (obj, UCL_EMIT_JSON_COMPACT, msg->body);
rspamd_http_connection_reset (entry->conn);
rspamd_http_connection_write_message (entry->conn, msg, NULL,
"application/json", entry, entry->conn->fd, entry->rt->ptv, entry->rt->ev_base);
entry->is_reply = TRUE;
}
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