157 lines
3.6 KiB
C
157 lines
3.6 KiB
C
/*
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* Copyright (c) 2014 Vyronas Tsingaras (vtsingaras@it.auth.gr)
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* Copyright (C) 2014 Martin Willi
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* Copyright (C) 2014 revosec AG
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "ext_auth_plugin.h"
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#include "ext_auth_listener.h"
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#include <daemon.h>
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typedef struct private_ext_auth_plugin_t private_ext_auth_plugin_t;
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/**
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* private data of ext_auth plugin
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*/
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struct private_ext_auth_plugin_t {
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/**
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* implements plugin interface
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*/
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ext_auth_plugin_t public;
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/**
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* Listener verifying peers during authorization
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*/
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ext_auth_listener_t *listener;
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};
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METHOD(plugin_t, get_name, char*,
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private_ext_auth_plugin_t *this)
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{
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return "ext-auth";
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}
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/**
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* Create a listener instance, NULL on error
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*/
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static ext_auth_listener_t* create_listener()
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{
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char *script;
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script = lib->settings->get_str(lib->settings,
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"%s.plugins.ext-auth.script", NULL, lib->ns);
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if (!script)
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{
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DBG1(DBG_CFG, "no script for ext-auth script defined, disabled");
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return NULL;
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}
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DBG1(DBG_CFG, "using ext-auth script '%s'", script);
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return ext_auth_listener_create(script);
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}
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/**
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* Register listener
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*/
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static bool plugin_cb(private_ext_auth_plugin_t *this,
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plugin_feature_t *feature, bool reg, void *cb_data)
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{
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if (reg)
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{
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this->listener = create_listener();
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if (!this->listener)
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{
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return FALSE;
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}
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charon->bus->add_listener(charon->bus, &this->listener->listener);
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}
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else
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{
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if (this->listener)
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{
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charon->bus->remove_listener(charon->bus, &this->listener->listener);
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this->listener->destroy(this->listener);
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}
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}
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return TRUE;
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}
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METHOD(plugin_t, get_features, int,
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private_ext_auth_plugin_t *this, plugin_feature_t *features[])
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{
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static plugin_feature_t f[] = {
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PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
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PLUGIN_PROVIDE(CUSTOM, "ext_auth"),
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};
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*features = f;
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return countof(f);
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}
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METHOD(plugin_t, reload, bool,
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private_ext_auth_plugin_t *this)
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{
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ext_auth_listener_t *listener;
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/* reload new listener overlapped */
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listener = create_listener();
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if (listener)
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{
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charon->bus->add_listener(charon->bus, &listener->listener);
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}
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if (this->listener)
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{
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charon->bus->remove_listener(charon->bus, &this->listener->listener);
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this->listener->destroy(this->listener);
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}
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this->listener = listener;
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return TRUE;
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}
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METHOD(plugin_t, destroy, void,
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private_ext_auth_plugin_t *this)
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{
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free(this);
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}
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/**
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* Plugin constructor
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*/
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plugin_t *ext_auth_plugin_create()
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{
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private_ext_auth_plugin_t *this;
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INIT(this,
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.public = {
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.plugin = {
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.get_name = _get_name,
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.get_features = _get_features,
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.reload = _reload,
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.destroy = _destroy,
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},
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},
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);
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return &this->public.plugin;
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}
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