ims-volte-vowifi
/
strongswan
9
0
Fork 0
Code Pull Requests Releases Activity

Added a simple led plugin to control Linux LEDs based on IKE activity

This commit is contained in:
Martin Willi 2010-09-08 11:59:00 +02:00
parent 51b385d44d
commit 30cd31fb69
7 changed files with 426 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
configure.in
View File

@ -156,6 +156,7 @@ ARG_ENABL_SET([uci], [enable OpenWRT UCI configuration plugin.])
ARG_ENABL_SET([android], [enable Android specific plugin.])
ARG_ENABL_SET([nm], [enable NetworkManager plugin.])
ARG_ENABL_SET([ha], [enable high availability cluster plugin.])
ARG_ENABL_SET([led], [enable plugin to control LEDs on IKEv2 activity using the Linux kernel LED subsystem.])
ARG_ENABL_SET([vstr], [enforce using the Vstr string library to replace glibc-like printf hooks.])
ARG_ENABL_SET([monolithic], [build monolithic version of libstrongswan that includes all enabled plugins. Similarly, the plugins of charon are assembled in libcharon.])
@ -759,6 +760,7 @@ ADD_PLUGIN([nm], [c libcharon])
ADD_PLUGIN([dhcp], [c libcharon])
ADD_PLUGIN([android], [c libcharon])
ADD_PLUGIN([ha], [c libcharon])
ADD_PLUGIN([led], [c libcharon])
ADD_PLUGIN([uci], [c libcharon])
ADD_PLUGIN([addrblock], [c libcharon])
ADD_PLUGIN([unit-tester], [c libcharon])
@ -832,6 +834,7 @@ AM_CONDITIONAL(USE_DHCP, test x$dhcp = xtrue)
AM_CONDITIONAL(USE_UNIT_TESTS, test x$unit_tests = xtrue)
AM_CONDITIONAL(USE_LOAD_TESTER, test x$load_tester = xtrue)
AM_CONDITIONAL(USE_HA, test x$ha = xtrue)
AM_CONDITIONAL(USE_LED, test x$led = xtrue)
AM_CONDITIONAL(USE_EAP_SIM, test x$eap_sim = xtrue)
AM_CONDITIONAL(USE_EAP_SIM_FILE, test x$eap_sim_file = xtrue)
AM_CONDITIONAL(USE_EAP_SIMAKA_SQL, test x$eap_simaka_sql = xtrue)
@ -995,6 +998,7 @@ AC_OUTPUT(
src/libcharon/plugins/addrblock/Makefile
src/libcharon/plugins/uci/Makefile
src/libcharon/plugins/ha/Makefile
src/libcharon/plugins/led/Makefile
src/libcharon/plugins/android/Makefile
src/libcharon/plugins/stroke/Makefile
src/libcharon/plugins/updown/Makefile

7
src/libcharon/Makefile.am
View File

@ -354,6 +354,13 @@ if MONOLITHIC
endif
endif
if USE_LED
SUBDIRS += plugins/led
if MONOLITHIC
libcharon_la_LIBADD += plugins/led/libstrongswan-led.la
endif
endif
if USE_UCI
SUBDIRS += plugins/uci
if MONOLITHIC

16
src/libcharon/plugins/led/Makefile.am Normal file
View File

@ -0,0 +1,16 @@
INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \
-I$(top_srcdir)/src/libcharon
AM_CFLAGS = -rdynamic
if MONOLITHIC
noinst_LTLIBRARIES = libstrongswan-led.la
else
plugin_LTLIBRARIES = libstrongswan-led.la
endif
libstrongswan_led_la_SOURCES = led_plugin.h led_plugin.c \
led_listener.h led_listener.c
libstrongswan_led_la_LDFLAGS = -module -avoid-version

241
src/libcharon/plugins/led/led_listener.c Normal file
View File

@ -0,0 +1,241 @@
/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
#include "led_listener.h"
#include <errno.h>
#include <daemon.h>
#include <threading/mutex.h>
#include <processing/jobs/callback_job.h>
typedef struct private_led_listener_t private_led_listener_t;
/**
* Private data of an led_listener_t object.
*/
struct private_led_listener_t {
/**
* Public led_listener_t interface.
*/
led_listener_t public;
/**
* Mutex
*/
mutex_t *mutex;
/**
* Number of established IKE_SAs
*/
int count;
/**
* LED blink on/off time, in ms
*/
int blink_time;
/**
* Activity LED fd, if any
*/
FILE *activity;
/**
* Activity LED maximum brightness
*/
int activity_max;
};
/**
* Open a LED brightness control file, get max brightness
*/
static FILE *open_led(char *name, int *max_brightness)
{
char path[PATH_MAX];
FILE *f;
if (!name)
{
return NULL;
}
*max_brightness = 1;
snprintf(path, sizeof(path), "/sys/class/leds/%s/max_brightness", name);
f = fopen(path, "r");
if (f)
{
if (fscanf(f, "%d\n", max_brightness) != 1)
{
DBG1(DBG_CFG, "reading max brightness for '%s' failed: %s, using 1",
name, strerror(errno));
}
fclose(f);
}
else
{
DBG1(DBG_CFG, "reading max_brightness for '%s' failed: %s, using 1",
name, strerror(errno));
}
snprintf(path, sizeof(path), "/sys/class/leds/%s/brightness", name);
f = fopen(path, "w");
if (!f)
{
DBG1(DBG_CFG, "opening LED file '%s' failed: %s", path, strerror(errno));
}
return f;
}
/**
* Set a LED to a given brightness
*/
static void set_led(FILE *led, int brightness)
{
if (led)
{
if (fprintf(led, "%d\n", brightness) <= 0 ||
fflush(led) != 0)
{
DBG1(DBG_CFG, "setting LED brightness failed: %s", strerror(errno));
}
}
}
/**
* Plugin unloaded?
*/
static bool plugin_gone = FALSE;
/**
* Reset activity LED after timeout
*/
static job_requeue_t reset_activity_led(private_led_listener_t *this)
{
if (!plugin_gone)
{ /* TODO: fix race */
this->mutex->lock(this->mutex);
if (this->count)
{
set_led(this->activity, this->activity_max);
}
else
{
set_led(this->activity, 0);
}
this->mutex->unlock(this->mutex);
}
return JOB_REQUEUE_NONE;
}
/**
* Blink the activity LED
*/
static void blink_activity(private_led_listener_t *this)
{
if (this->activity)
{
this->mutex->lock(this->mutex);
if (this->count)
{
set_led(this->activity, 0);
}
else
{
set_led(this->activity, this->activity_max);
}
lib->scheduler->schedule_job_ms(lib->scheduler,
(job_t*)callback_job_create((callback_job_cb_t)reset_activity_led,
this, NULL, NULL), this->blink_time);
this->mutex->unlock(this->mutex);
}
}
METHOD(listener_t, ike_state_change, bool,
private_led_listener_t *this, ike_sa_t *ike_sa, ike_sa_state_t state)
{
this->mutex->lock(this->mutex);
if (state == IKE_ESTABLISHED && ike_sa->get_state(ike_sa) != IKE_ESTABLISHED)
{
this->count++;
if (this->count == 1)
{
set_led(this->activity, this->activity_max);
}
}
if (ike_sa->get_state(ike_sa) == IKE_ESTABLISHED && state != IKE_ESTABLISHED)
{
this->count--;
if (this->count == 0)
{
set_led(this->activity, 0);
}
}
this->mutex->unlock(this->mutex);
return TRUE;
}
METHOD(listener_t, message_hook, bool,
private_led_listener_t *this, ike_sa_t *ike_sa,
message_t *message, bool incoming)
{
if (incoming || message->get_request(message))
{
blink_activity(this);
}
return TRUE;
}
METHOD(led_listener_t, destroy, void,
private_led_listener_t *this)
{
this->mutex->lock(this->mutex);
set_led(this->activity, 0);
plugin_gone = TRUE;
this->mutex->unlock(this->mutex);
if (this->activity)
{
fclose(this->activity);
}
this->mutex->destroy(this->mutex);
free(this);
}
/**
* See header
*/
led_listener_t *led_listener_create()
{
private_led_listener_t *this;
INIT(this,
.public = {
.listener = {
.ike_state_change = _ike_state_change,
.message = _message_hook,
},
.destroy = _destroy,
},
.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
.blink_time = lib->settings->get_int(lib->settings,
"charon.plugins.led.blink_time", 50),
);
this->activity = open_led(lib->settings->get_str(lib->settings,
"charon.plugins.led.activity_led", NULL), &this->activity_max);
set_led(this->activity, 0);
return &this->public;
}

49
src/libcharon/plugins/led/led_listener.h Normal file
View File

@ -0,0 +1,49 @@
/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
/**
* @defgroup led_listener led_listener
* @{ @ingroup led
*/
#ifndef LED_LISTENER_H_
#define LED_LISTENER_H_
#include <bus/listeners/listener.h>
typedef struct led_listener_t led_listener_t;
/**
* Listener to register the set of IPs we spoof ARP responses for.
*/
struct led_listener_t {
/**
* Implements listener_t interface.
*/
listener_t listener;
/**
* Destroy a led_listener_t.
*/
void (*destroy)(led_listener_t *this);
};
/**
* Create a led_listener instance.
*/
led_listener_t *led_listener_create();
#endif /** LED_LISTENER_H_ @}*/

67
src/libcharon/plugins/led/led_plugin.c Normal file
View File

@ -0,0 +1,67 @@
/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
#include "led_plugin.h"
#include "led_listener.h"
#include <daemon.h>
typedef struct private_led_plugin_t private_led_plugin_t;
/**
* private data of led plugin
*/
struct private_led_plugin_t {
/**
* implements plugin interface
*/
led_plugin_t public;
/**
* Listener controlling LEDs
*/
led_listener_t *listener;
};
METHOD(plugin_t, destroy, void,
private_led_plugin_t *this)
{
charon->bus->remove_listener(charon->bus, &this->listener->listener);
this->listener->destroy(this->listener);
free(this);
}
/**
* Plugin constructor
*/
plugin_t *led_plugin_create()
{
private_led_plugin_t *this;
INIT(this,
.public = {
.plugin = {
.destroy = _destroy,
},
},
.listener = led_listener_create(),
);
charon->bus->add_listener(charon->bus, &this->listener->listener);
return &this->public.plugin;
}

42
src/libcharon/plugins/led/led_plugin.h Normal file
View File

@ -0,0 +1,42 @@
/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program 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 General Public License
* for more details.
*/
/**
* @defgroup led led
* @ingroup cplugins
*
* @defgroup led_plugin led_plugin
* @{ @ingroup led
*/
#ifndef LED_PLUGIN_H_
#define LED_PLUGIN_H_
#include <plugins/plugin.h>
typedef struct led_plugin_t led_plugin_t;
/**
* Linux LED control based on IKE activity/state.
*/
struct led_plugin_t {
/**
* implements plugin interface
*/
plugin_t plugin;
};
#endif /** LED_PLUGIN_H_ @}*/