This commit is contained in:
Martin Willi
@@ -1,74 +0,0 @@
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/**
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* @file encodings.c
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*
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* @brief Type definitions for parser and generator,
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* also payload types are defined here.
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*
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* Header is parsed like a payload and gets its one payload_id
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* from PRIVATE USE space. Also the substructures
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* of specific payload types get their own payload_id
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* from PRIVATE_USE space. See RFC for mor informations.
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include <stdlib.h>
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#include "../types.h"
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#include "encodings.h"
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#include "ike_header.h"
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extern payload_info_t ike_header_info;
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/*
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* build the mappings for payload_type_t
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*/
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mapping_t payload_type_t_mappings[] = {
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{NO_PAYLOAD, "NO_PAYLOAD"},
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{SECURITY_ASSOCIATION, "SECURITY_ASSOCIATION"},
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{KEY_EXCHANGE, "KEY_EXCHANGE"},
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{ID_INITIATOR, "ID_INITIATOR"},
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{ID_RESPONDER, "ID_RESPONDER"},
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{CERTIFICATE, "CERTIFICATE"},
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{CERTIFICATE_REQUEST, "CERTIFICATE_REQUEST"},
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{AUTHENTICATION, "AUTHENTICATION"},
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{NONCE, "NONCE"},
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{NOTIFY, "NOTIFY"},
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{DELETE, "DELETE"},
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{VENDOR_ID, "VENDOR_ID"},
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{TRAFFIC_SELECTOR_INITIATOR, "TRAFFIC_SELECTOR_INITIATOR"},
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{TRAFFIC_SELECTOR_RESPONDER, "TRAFFIC_SELECTOR_RESPONDER"},
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{ENCRYPTED, "ENCRYPTED"},
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{CONFIGURATION, "CONFIGURATION"},
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{EXTENSIBLE_AUTHENTICATION, "EXTENSIBLE_AUTHENTICATION"},
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{HEADER, "HEADER"},
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{MAPPING_END, NULL}
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};
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/**
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* List containing all payload informations
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* supported by parser and generator.
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*
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* @warning This list must be NULL terminated.
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*/
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payload_info_t *payload_infos[] = {
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&ike_header_info,
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NULL
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};
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@@ -1,331 +0,0 @@
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/**
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* @file encodings.h
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*
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* @brief Type definitions for parser and generator,
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* also payload types are defined here.
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*
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* Header is parsed like a payload and gets its one payload_id
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* from PRIVATE USE space. Also the substructures
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* of specific payload types get their own payload_id
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* from PRIVATE_USE space. See RFC for mor informations.
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef ENCODINGS_H_
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#define ENCODINGS_H_
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#include "../types.h"
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#include "../definitions.h"
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/**
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* @brief All different kinds of encoding types.
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*
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* Each field of an IKEv2-Message (in header or payload)
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* which has to be parsed or generated differently has its own
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* type defined here.
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*/
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typedef enum encoding_type_e encoding_type_t;
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enum encoding_type_e{
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/**
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* Representing a 4 Bit unsigned int value
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*
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*
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* When generating it must be changed from host to network order.
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* The value is read from the associated data struct.
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* The current write position is moved 4 bit forward afterwards.
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*
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* When parsing it must be changed from network to host order.
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* The value is written to the associated data struct.
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* The current read pointer is moved 4 bit forward afterwards.
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*/
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U_INT_4,
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/**
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* Representing a 8 Bit unsigned int value
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*
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*
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* When generating it must be changed from host to network order.
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* The value is read from the associated data struct.
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* The current write position is moved 8 bit forward afterwards.
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*
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* When parsing it must be changed from network to host order.
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* The value is written to the associated data struct.
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* The current read pointer is moved 8 bit forward afterwards.
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*/
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U_INT_8,
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/**
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* Representing a 16 Bit unsigned int value
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*
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*
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* When generating it must be changed from host to network order.
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* The value is read from the associated data struct.
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* The current write position is moved 16 bit forward afterwards.
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*
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* When parsing it must be changed from network to host order.
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* The value is written to the associated data struct.
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* The current read pointer is moved 16 bit forward afterwards.
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*/
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U_INT_16,
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/**
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* Representing a 32 Bit unsigned int value
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*
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* When generating it must be changed from host to network order.
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* The value is read from the associated data struct.
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* The current write position is moved 32 bit forward afterwards.
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*
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* When parsing it must be changed from network to host order.
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* The value is written to the associated data struct.
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* The current read pointer is moved 32 bit forward afterwards.
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*/
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U_INT_32,
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/**
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* Representing a 64 Bit unsigned int value
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*
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* When generating it must be changed from host to network order.
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* The value is read from the associated data struct.
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* The current write position is moved 64 bit forward afterwards.
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*
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* When parsing it must be changed from network to host order.
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* The value is written to the associated data struct.
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* The current read pointer is moved 64 bit forward afterwards.
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*/
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U_INT_64,
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/**
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* @brief represents a RESERVED_BIT used in FLAG-Bytes
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*
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* When generating, the next bit is set to zero and the current write
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* position is moved one bit forward.
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* No value is read from the associated data struct.
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* The current write position is moved 1 bit forward afterwards.
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*
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* When parsing, the current read pointer is moved one bit forward.
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* No value is written to the associated data struct.
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* The current read pointer is moved 1 bit forward afterwards.
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*/
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RESERVED_BIT,
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/**
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* @brief represents a RESERVED_BYTE
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*
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* When generating, the next byte is set to zero and the current write
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* position is moved one byte forward.
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* No value is read from the associated data struct.
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* The current write position is moved 1 byte forward afterwards.
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*
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* When parsing, the current read pointer is moved one byte forward.
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* No value is written to the associated data struct.
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* The current read pointer is moved 1 byte forward afterwards.
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*/
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RESERVED_BYTE,
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/**
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* Representing a 1 Bit flag.
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*
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* When generation, the next bit is set to 1 if the associated value
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* in the data struct is TRUE, 0 otherwise. The current write position
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* is moved 1 bit forward afterwards.
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*
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* When parsing, the next bit is read and stored in the associated data
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* struct. 0 means FALSE, 1 means TRUE, The current read pointer
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* is moved 1 bit forward afterwards
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*/
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FLAG,
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/**
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* Representating a length field
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*
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* When generating it must be changed from host to network order.
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* The value is read from the associated data struct.
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* The current write position is moved 32 bit forward afterwards.
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*
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* When parsing it must be changed from network to host order.
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* The value is written to the associated data struct.
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* The current read pointer is moved 32 bit forward afterwards.
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*/
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LENGTH,
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/**
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* Representating a spi size field
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*
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* When generating it must be changed from host to network order.
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* The value is read from the associated data struct.
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* The current write position is moved 32 bit forward afterwards.
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*
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* When parsing it must be changed from network to host order.
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* The value is written to the associated data struct.
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* The current read pointer is moved 32 bit forward afterwards.
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*/
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SPI_SIZE
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};
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/**
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* An encoding rule is a mapping of a specific encoding type to
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* a location in the data struct where the current field is stored to
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* or read from.
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*
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* For examples see directory encodings/.
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*
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* This rules are used by parser and generator.
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*/
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typedef struct encoding_rule_s encoding_rule_t;
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struct encoding_rule_s{
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/**
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* Encoding type
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*/
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encoding_type_t type;
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/**
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* Offset in the data struct
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*
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* When parsing, data are written to this offset of the
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* data struct.
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*
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* When generating, data are read from this offset in the
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* data struct.
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*/
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u_int32_t offset;
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};
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/**
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* Payload-Types of a IKEv2-Message
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*
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*
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* Header and substructures are also defined as
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* payload types with values from PRIVATE USE space.
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*/
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typedef enum payload_type_e payload_type_t;
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enum payload_type_e{
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/**
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* NO_PAYLOAD
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*/
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NO_PAYLOAD = 0,
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/**
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* SA
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*/
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SECURITY_ASSOCIATION = 33,
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/**
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* KE
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*/
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KEY_EXCHANGE = 34,
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/**
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* IDi
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*/
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ID_INITIATOR = 35,
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/**
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* IDr
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*/
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ID_RESPONDER = 36,
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/**
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* CERT
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||||
*/
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CERTIFICATE = 37,
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/**
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* CERTREQ
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*/
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CERTIFICATE_REQUEST = 38,
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/**
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* AUTH
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||||
*/
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AUTHENTICATION = 39,
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/**
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* Ni, Nr
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*/
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NONCE = 40,
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/**
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* N
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||||
*/
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NOTIFY = 41,
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/**
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* D
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||||
*/
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||||
DELETE = 42,
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||||
/**
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||||
* V
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||||
*/
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||||
VENDOR_ID = 43,
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||||
/**
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||||
* TSi
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||||
*/
|
||||
TRAFFIC_SELECTOR_INITIATOR = 44,
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||||
/**
|
||||
* TSr
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||||
*/
|
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TRAFFIC_SELECTOR_RESPONDER = 45,
|
||||
/**
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||||
* E
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||||
*/
|
||||
ENCRYPTED = 46,
|
||||
/**
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||||
* CP
|
||||
*/
|
||||
CONFIGURATION = 47,
|
||||
/**
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||||
* EAP
|
||||
*/
|
||||
EXTENSIBLE_AUTHENTICATION = 48,
|
||||
|
||||
/**
|
||||
* Header has value 140 of PRIVATE USE space
|
||||
*
|
||||
* This payload type is not send over wire and just
|
||||
* used internally to handle IKEv2-Header like a payload.
|
||||
*/
|
||||
HEADER = 140
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* build string mapping array for payload_type_t
|
||||
*/
|
||||
extern mapping_t payload_type_t_mappings[];
|
||||
|
||||
/**
|
||||
* Information of a specific payload are stored in this struct
|
||||
*
|
||||
* The following informations are needed for each payload
|
||||
* - payload type
|
||||
* - length of its associated data struct in bytes
|
||||
* - encoding rules array
|
||||
* - encoding rules count
|
||||
*/
|
||||
typedef struct payload_info_s payload_info_t;
|
||||
|
||||
struct payload_info_s{
|
||||
/**
|
||||
* Type of payload
|
||||
*/
|
||||
payload_type_t payload_type;
|
||||
/**
|
||||
* Length of associated data struct in bytes
|
||||
*/
|
||||
size_t data_struct_length;
|
||||
|
||||
/**
|
||||
* Pointer to the encoding rules array
|
||||
*/
|
||||
encoding_rule_t *ecoding_rules;
|
||||
|
||||
/**
|
||||
* Number of encoding rules for the specific payload_type
|
||||
*/
|
||||
size_t encoding_rules_count;
|
||||
};
|
||||
|
||||
#endif /*ENCODINGS_H_*/
|
||||
@@ -1,73 +0,0 @@
|
||||
/**
|
||||
* @file ike_header.c
|
||||
*
|
||||
* @brief Definition of the encoding rules used when parsing or generating
|
||||
* an IKEv2-Header
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/* offsetof macro */
|
||||
#include <stddef.h>
|
||||
|
||||
#include "encodings.h"
|
||||
#include "ike_header.h"
|
||||
|
||||
/**
|
||||
* Encoding rules to parse or generate a IKEv2-Header
|
||||
*
|
||||
* The defined offsets are the positions in a struct of type
|
||||
* ike_header_t.
|
||||
*
|
||||
*/
|
||||
encoding_rule_t ike_header_encodings[] = {
|
||||
/* 8 Byte SPI, stored in the field initiator_spi */
|
||||
{ U_INT_64, offsetof(ike_header_t, initiator_spi) },
|
||||
/* 8 Byte SPI, stored in the field responder_spi */
|
||||
{ U_INT_64, offsetof(ike_header_t, responder_spi) },
|
||||
/* 1 Byte next payload type, stored in the field next_payload */
|
||||
{ U_INT_8, offsetof(ike_header_t, next_payload) },
|
||||
/* 4 Bit major version, stored in the field maj_version */
|
||||
{ U_INT_4, offsetof(ike_header_t, maj_version) },
|
||||
/* 4 Bit minor version, stored in the field min_version */
|
||||
{ U_INT_4, offsetof(ike_header_t, min_version) },
|
||||
/* 8 Bit for the exchange type */
|
||||
{ U_INT_8, offsetof(ike_header_t, exchange_type) },
|
||||
/* 2 Bit reserved bits, nowhere stored */
|
||||
{ RESERVED_BIT, 0 },
|
||||
{ RESERVED_BIT, 0 },
|
||||
/* 3 Bit flags, stored in the fields response, version and initiator */
|
||||
{ FLAG, offsetof(ike_header_t, flags.response) },
|
||||
{ FLAG, offsetof(ike_header_t, flags.version) },
|
||||
{ FLAG, offsetof(ike_header_t, flags.initiator) },
|
||||
/* 3 Bit reserved bits, nowhere stored */
|
||||
{ RESERVED_BIT, 0 },
|
||||
{ RESERVED_BIT, 0 },
|
||||
{ RESERVED_BIT, 0 },
|
||||
/* 4 Byte message id, stored in the field message_id */
|
||||
{ U_INT_32, offsetof(ike_header_t, message_id) },
|
||||
/* 4 Byte length fied, stored in the field length */
|
||||
{ LENGTH, offsetof(ike_header_t, length) }
|
||||
};
|
||||
|
||||
/**
|
||||
* This informations are needed for autmatic parsing of header content
|
||||
*/
|
||||
payload_info_t ike_header_info = {HEADER,
|
||||
sizeof(ike_header_t),
|
||||
ike_header_encodings,
|
||||
(sizeof(ike_header_encodings)/sizeof(encoding_rule_t))};
|
||||
@@ -1,96 +0,0 @@
|
||||
/**
|
||||
* @file ike_header.h
|
||||
*
|
||||
* @brief Declaration of the data struct ike_header_t.
|
||||
*
|
||||
* The data of a parsed header are stored in a struct of this type.
|
||||
*
|
||||
*/
|
||||
|
||||
/*
|
||||
* 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 IKE_HEADER_H_
|
||||
#define IKE_HEADER_H_
|
||||
|
||||
#include "../types.h"
|
||||
|
||||
/**
|
||||
* Data structure to hold the data of an IKEv2-Header
|
||||
*
|
||||
* The header format of an IKEv2-Message is compatible to the
|
||||
* ISAKMP-Header format to allow implementations supporting
|
||||
* both versions of the IKE-protocol.
|
||||
*
|
||||
*/
|
||||
typedef struct ike_header_s ike_header_t;
|
||||
|
||||
struct ike_header_s{
|
||||
/**
|
||||
* SPI of the initiator
|
||||
*/
|
||||
u_int64_t initiator_spi;
|
||||
/**
|
||||
* SPI of the responder
|
||||
*/
|
||||
u_int64_t responder_spi;
|
||||
/**
|
||||
* next payload type
|
||||
*/
|
||||
u_int8_t next_payload;
|
||||
/**
|
||||
* IKE major version
|
||||
*/
|
||||
u_int8_t maj_version;
|
||||
|
||||
/**
|
||||
* IKE minor version
|
||||
*/
|
||||
u_int8_t min_version;
|
||||
|
||||
/**
|
||||
* Exchange type
|
||||
*/
|
||||
u_int8_t exchange_type;
|
||||
|
||||
/**
|
||||
* Flags of the Message
|
||||
*
|
||||
*/
|
||||
struct {
|
||||
/**
|
||||
* Sender is initiator of the associated IKE_SA_INIT-Exchange
|
||||
*/
|
||||
bool initiator;
|
||||
/**
|
||||
* is protocol supporting higher version?
|
||||
*/
|
||||
bool version;
|
||||
/**
|
||||
* TRUE, if this is a response, FALSE if its a Request
|
||||
*/
|
||||
bool response;
|
||||
} flags;
|
||||
/**
|
||||
* Associated Message-ID
|
||||
*/
|
||||
u_int32_t message_id;
|
||||
/**
|
||||
* Length of the whole IKEv2-Message (header and all payloads)
|
||||
*/
|
||||
u_int32_t length;
|
||||
};
|
||||
|
||||
#endif /*IKE_HEADER_H_*/
|
||||
Reference in New Issue
Block a user