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/*
* Copyright (c) 2002-2012 Balabit
* Copyright (c) 1998-2012 Balázs Scheidler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "apphook.h"
#include "messages.h"
#include "children.h"
#include "dnscache.h"
#include "alarms.h"
#include "stats/stats-registry.h"
#include "logmsg/logmsg.h"
#include "timeutils.h"
#include "logsource.h"
#include "logwriter.h"
#include "afinter.h"
#include "template/templates.h"
#include "hostname.h"
#include "scratch-buffers.h"
#include "mainloop-call.h"
#include "service-management.h"
#include "crypto.h"
#include "value-pairs/value-pairs.h"
#include <iv.h>
#include <iv_work.h>
#include <resolv.h>
typedef struct _ApplicationHookEntry
{
gint type;
ApplicationHookFunc func;
gpointer user_data;
} ApplicationHookEntry;
static GList *application_hooks = NULL;
static gint current_state = AH_STARTUP;
void
register_application_hook(gint type, ApplicationHookFunc func, gpointer user_data)
{
if (current_state < type)
{
ApplicationHookEntry *entry = g_new0(ApplicationHookEntry, 1);
entry->type = type;
entry->func = func;
entry->user_data = user_data;
application_hooks = g_list_append(application_hooks, entry);
}
else
{
/* the requested hook has already passed, call the requested function immediately */
msg_debug("Application hook registered after the given point passed",
evt_tag_int("current", current_state),
evt_tag_int("hook", type));
func(type, user_data);
}
}
static void
run_application_hook(gint type)
{
GList *l, *l_next;
g_assert(current_state <= type);
msg_debug("Running application hooks", evt_tag_int("hook", type));
current_state = type;
for (l = application_hooks; l; l = l_next)
{
ApplicationHookEntry *e = l->data;
if (e->type == type)
{
l_next = l->next;
application_hooks = g_list_remove_link(application_hooks, l);
e->func(type, e->user_data);
g_free(e);
g_list_free_1(l);
}
else
{
l_next = l->next;
}
}
}
static void
app_fatal(const char *msg)
{
fprintf(stderr, "%s\n", msg);
}
void
app_startup(void)
{
msg_init(FALSE);
iv_set_fatal_msg_handler(app_fatal);
iv_init();
g_thread_init(NULL);
crypto_init();
hostname_global_init();
dns_caching_global_init();
dns_caching_thread_init();
afinter_global_init();
child_manager_init();
alarm_init();
stats_init();
tzset();
log_msg_global_init();
log_tags_global_init();
log_source_global_init();
log_template_global_init();
value_pairs_global_init();
service_management_init();
}
void
app_post_daemonized(void)
{
run_application_hook(AH_POST_DAEMONIZED);
}
void
app_pre_config_loaded(void)
{
current_state = AH_PRE_CONFIG_LOADED;
}
void
app_post_config_loaded(void)
{
run_application_hook(AH_POST_CONFIG_LOADED);
res_init();
}
void
app_shutdown(void)
{
run_application_hook(AH_SHUTDOWN);
value_pairs_global_deinit();
log_template_global_deinit();
log_tags_global_deinit();
log_msg_global_deinit();
stats_destroy();
child_manager_deinit();
g_list_foreach(application_hooks, (GFunc) g_free, NULL);
g_list_free(application_hooks);
dns_caching_thread_deinit();
dns_caching_global_deinit();
hostname_global_deinit();
crypto_deinit();
msg_deinit();
/* NOTE: the iv_deinit() call should come here, but there's some exit
* synchronization issue in libivykis that causes use-after-free with the
* thread-local-state for the main thread and iv_work_pool worker threads.
* I've dropped a mail to Lennert about the issue, but I'm commenting this
* out for now to avoid it biting someone. Bazsi, 2013/12/23.
*
*
iv_deinit();
*/
}
void
app_thread_start(void)
{
scratch_buffers_init();
dns_caching_thread_init();
main_loop_call_thread_init();
}
void
app_thread_stop(void)
{
dns_caching_thread_deinit();
scratch_buffers_free();
main_loop_call_thread_deinit();
}
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