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/**
* @file configuration_manager.h
*
* @brief Manages all configuration aspects of the daemon.
*
*/
/*
* Copyright (C) 2005 Jan Hutter, Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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.
*/
#ifndef CONFIGURATION_MANAGER_H_
#define CONFIGURATION_MANAGER_H_
#include <types.h>
#include <utils/linked_list.h>
#include <network/host.h>
#include <encoding/payloads/transform_substructure.h>
#include <transforms/prfs/prf.h>
#include <transforms/signers/signer.h>
#include <transforms/crypters/crypter.h>
typedef struct configuration_manager_t configuration_manager_t;
/**
* @brief Manages all configuration aspects of the daemon.
*
* Currently the configuration manager class does not store specific configurations.
* It is expected, that in future different configurations are stored in a linked list
* or a hash map and are managed by this class.
*
*/
struct configuration_manager_t {
/**
* Gets the remote host information for a specific configuration name.
*
* A host information consist of IP address and UDP port.
*
* @param this calling object
* @param name name of the configuration
* @param host remote host information gets stored at this location
*
* @return
* - NOT_FOUND
* - SUCCESS
*/
status_t (*get_remote_host) (configuration_manager_t *this, char *name, host_t **host);
/**
* Gets the local host information for a specific configuration name
*
* A host information consist of IP address and UDP port.
*
* @param this calling object
* @param name name of the configuration
* @param host local host information gets stored at this location
*
* @return
* - NOT_FOUND (not yet implemented)
* - SUCCESS
*/
status_t (*get_local_host) (configuration_manager_t *this, char *name, host_t **host);
/**
* Returns the DH group number to use when initiating a connection.
*
* To make sure that different group numbers are supported in case
* a group number is not supported by other peer, a priority has to get defined.
*
*
* @param this calling object
* @param name name of the configuration
* @param dh_group_number the DH group number gets stored at this location
* @param priority priority to use for selection of DH group number.
* Highest priority is 1. All higher values have lower
* priority.
*
* @return
* - FAILED (not yet implemented)
* - NOT_FOUND (not yet implemented)
* - SUCCESS
*/
status_t (*get_dh_group_number) (configuration_manager_t *this, char *name, u_int16_t *dh_group_number, u_int16_t priority);
/**
* Returns the proposals which should be used to initiate a connection with a specific
* host.
*
* The proposals of type proposal_substructure_t * are returned over the given iterator
* and have to be destroyed by the caller.
*
*
* @param this calling object
* @param host host information used to find the correct proposals
* @param list iterator where the proposals are written to
*
* @return
* - NOT_FOUND (not yet implemented)
* - SUCCESS
*/
status_t (*get_proposals_for_host) (configuration_manager_t *this, host_t *host, iterator_t *list);
/**
* Checks the suggested proposals passed as iterator in and selects one proposal to be sent as selection
* of this proposals.
*
* Currently there is no check implemented. The first suggested proposal is cloned and then as selected returned.
*
*
* @param this calling object
* @param host host information used to find the correct proposals
* @param in iterator with suggested proposals of type proposal_substructure_t *
* @param out The selected proposals of type proposal_substructure_t * are written to this iterator
*
* @return
* - FAILED
* - NOT_FOUND (not yet implemented)
* - SUCCESS
*/
status_t (*select_proposals_for_host) (configuration_manager_t *this, host_t *host, iterator_t *in, iterator_t *out);
/**
* Checks if the selected proposals of a remote hosts are valid.
*
*
* @param this calling object
* @param host host information
* @param proposals iterator with selected proposals
* @param[out] valid TRUE if selected proposals are accepted
*
* @return
* - FAILED
* - NOT_FOUND (not yet implemented)
* - SUCCESS
*/
status_t (*check_selected_proposals_for_host) (configuration_manager_t *this,
host_t *host,
iterator_t *proposals,
bool *valid);
/**
* Checks if a given dh_group number is allowed for a specific host
*
*
* @param this calling object
* @param host host information
* @param group DH group number to check if allowed
* @param[out] allowed will be set to TRUE if group number is allowed, FALSE otherwise
*
* @return
* - FAILED
* - NOT_FOUND (not yet implemented)
* - SUCCESS
*/
status_t (*is_dh_group_allowed_for_host) (configuration_manager_t *this, host_t *host, diffie_hellman_group_t group, bool *allowed);
/**
* Destroys configuration manager
*
*
* @param this calling object
* @return
* - SUCCESS
*/
status_t (*destroy) (configuration_manager_t *this);
};
/**
* Creates the mighty configuration manager
*
* @return
* - pointer to created manager object if succeeded
* - NULL if memory allocation failed
*/
configuration_manager_t *configuration_manager_create();
#endif /*CONFIGURATION_MANAGER_H_*/
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