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/*
* Copyright (C) 2011 Martin Willi
* Copyright (C) 2011 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 "coupling_plugin.h"
#include "coupling_validator.h"
#include <daemon.h>
typedef struct private_coupling_plugin_t private_coupling_plugin_t;
/**
* private data of coupling plugin
*/
struct private_coupling_plugin_t {
/**
* implements plugin interface
*/
coupling_plugin_t public;
/**
* validator controlling couplings
*/
coupling_validator_t *validator;
};
METHOD(plugin_t, get_name, char*,
private_coupling_plugin_t *this)
{
return "coupling";
}
/**
* Since the validator instantiates a hasher we create it as plugin feature.
* The default is SHA1 which we soft depend but depending on the plugin order
* there is no guarantee that the configured algorithm is registered.
*/
static bool plugin_cb(private_coupling_plugin_t *this,
plugin_feature_t *feature, bool reg, void *cb_data)
{
if (reg)
{
this->validator = coupling_validator_create();
if (!this->validator)
{
return FALSE;
}
lib->credmgr->add_validator(lib->credmgr, &this->validator->validator);
}
else
{
lib->credmgr->remove_validator(lib->credmgr,
&this->validator->validator);
this->validator->destroy(this->validator);
}
return TRUE;
}
METHOD(plugin_t, get_features, int,
private_coupling_plugin_t *this, plugin_feature_t *features[])
{
static plugin_feature_t f[] = {
PLUGIN_CALLBACK((plugin_feature_callback_t)plugin_cb, NULL),
PLUGIN_PROVIDE(CUSTOM, "coupling"),
PLUGIN_SDEPEND(HASHER, HASH_SHA1),
};
*features = f;
return countof(f);
}
METHOD(plugin_t, destroy, void,
private_coupling_plugin_t *this)
{
free(this);
}
/**
* Plugin constructor
*/
plugin_t *coupling_plugin_create()
{
private_coupling_plugin_t *this;
INIT(this,
.public = {
.plugin = {
.get_name = _get_name,
.get_features = _get_features,
.destroy = _destroy,
},
},
);
return &this->public.plugin;
}
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