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- implemented and tested ts_payload_t

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This commit is contained in:
Jan Hutter
2005-11-29 15:23:04 +00:00
parent 346af6f3de
commit 7da522ba73
18 changed files with 1391 additions and 15 deletions
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Source/charon/encoding/payloads/traffic_selector_substructure.c
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/**
* @file traffic_selector_substructure.c
*
* @brief Interface of traffic_selector_substructure_t.
*
*/
/*
* 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.
*/
#include "traffic_selector_substructure.h"
#include <encoding/payloads/encodings.h>
#include <utils/allocator.h>
#include <utils/linked_list.h>
/**
* String mappings for ts_type_t.
*/
mapping_t ts_type_m[] = {
{TS_IPV4_ADDR_RANGE, "TS_IPV4_ADDR_RANGE"},
{TS_IPV6_ADDR_RANGE, "TS_IPV6_ADDR_RANGE"},
{MAPPING_END, NULL}
};
typedef struct private_traffic_selector_substructure_t private_traffic_selector_substructure_t;
/**
* Private data of an traffic_selector_substructure_t object.
*
*/
struct private_traffic_selector_substructure_t {
/**
* Public traffic_selector_substructure_t interface.
*/
traffic_selector_substructure_t public;
/**
* Type of traffic selector.
*/
u_int8_t ts_type;
/**
* IP Protocol ID.
*/
u_int8_t ip_protocol_id;
/**
* Length of this payload.
*/
u_int16_t payload_length;
/**
* Start port number.
*/
u_int16_t start_port;
/**
* End port number.
*/
u_int16_t end_port;
/**
* Starting address.
*/
chunk_t starting_address;
/**
* Ending address.
*/
chunk_t ending_address;
};
/**
* Encoding rules to parse or generate a TS payload
*
* The defined offsets are the positions in a object of type
* private_traffic_selector_substructure_t.
*
*/
encoding_rule_t traffic_selector_substructure_encodings[] = {
/* 1 Byte next ts type*/
{ TS_TYPE, offsetof(private_traffic_selector_substructure_t, ts_type) },
/* 1 Byte IP protocol id*/
{ U_INT_8, offsetof(private_traffic_selector_substructure_t, ip_protocol_id) },
/* Length of the whole payload*/
{ PAYLOAD_LENGTH, offsetof(private_traffic_selector_substructure_t, payload_length) },
/* 2 Byte start port*/
{ U_INT_16, offsetof(private_traffic_selector_substructure_t, start_port) },
/* 2 Byte end port*/
{ U_INT_16, offsetof(private_traffic_selector_substructure_t, end_port) },
/* starting address is either 4 or 16 byte */
{ ADDRESS, offsetof(private_traffic_selector_substructure_t, starting_address) },
/* ending address is either 4 or 16 byte */
{ ADDRESS, offsetof(private_traffic_selector_substructure_t, ending_address) }
};
/*
1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! TS Type !IP Protocol ID*| Selector Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Start Port* | End Port* |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! !
~ Starting Address* ~
! !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! !
~ Ending Address* ~
! !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
/**
* Implementation of payload_t.verify.
*/
static status_t verify(private_traffic_selector_substructure_t *this)
{
if (this->start_port > this->end_port)
{
return FAILED;
}
switch (this->ts_type)
{
case TS_IPV4_ADDR_RANGE:
{
if ((this->starting_address.len != 4) ||
(this->ending_address.len != 4))
{
/* ipv4 address must be 4 bytes long */
return FAILED;
}
break;
}
case TS_IPV6_ADDR_RANGE:
default:
{
/* not supported ts type */
return FAILED;
}
}
return SUCCESS;
}
/**
* Implementation of traffic_selector_substructure_t.get_encoding_rules.
*/
static void get_encoding_rules(private_traffic_selector_substructure_t *this, encoding_rule_t **rules, size_t *rule_count)
{
*rules = traffic_selector_substructure_encodings;
*rule_count = sizeof(traffic_selector_substructure_encodings) / sizeof(encoding_rule_t);
}
/**
* Implementation of payload_t.get_type.
*/
static payload_type_t get_payload_type(private_traffic_selector_substructure_t *this)
{
return TRAFFIC_SELECTOR_SUBSTRUCTURE;
}
/**
* Implementation of payload_t.get_next_type.
*/
static payload_type_t get_next_type(private_traffic_selector_substructure_t *this)
{
return 0;
}
/**
* Implementation of payload_t.set_next_type.
*/
static void set_next_type(private_traffic_selector_substructure_t *this,payload_type_t type)
{
}
/**
* Implementation of payload_t.get_length.
*/
static size_t get_length(private_traffic_selector_substructure_t *this)
{
return this->payload_length;
}
/**
* Implementation of traffic_selector_substructure_t.get_ts_type.
*/
static ts_type_t get_ts_type (private_traffic_selector_substructure_t *this)
{
return this->ts_type;
}
/**
* Implementation of traffic_selector_substructure_t.set_ts_type.
*/
static void set_ts_type (private_traffic_selector_substructure_t *this,ts_type_t ts_type)
{
this->ts_type = ts_type;
}
/**
* Implementation of traffic_selector_substructure_t.get_protocol_id.
*/
static u_int8_t get_protocol_id (private_traffic_selector_substructure_t *this)
{
return this->ip_protocol_id;
}
/**
* Implementation of traffic_selector_substructure_t.set_protocol_id.
*/
static void set_protocol_id (private_traffic_selector_substructure_t *this,u_int8_t protocol_id)
{
this->ip_protocol_id = protocol_id;
}
/**
* Implementation of traffic_selector_substructure_t.get_start_host.
*/
static host_t * get_start_host (private_traffic_selector_substructure_t *this)
{
return (host_create_from_chunk(AF_INET,this->starting_address, this->start_port));
}
/**
* Implementation of traffic_selector_substructure_t.set_start_host.
*/
static void set_start_host (private_traffic_selector_substructure_t *this,host_t *start_host)
{
this->start_port = start_host->get_port(start_host);
if (this->starting_address.ptr != NULL)
{
allocator_free_chunk(&(this->starting_address));
}
this->starting_address = start_host->get_address_as_chunk(start_host);
this->payload_length = TRAFFIC_SELECTOR_HEADER_LENGTH + this->starting_address.len + this->ending_address.len;
}
/**
* Implementation of traffic_selector_substructure_t.get_end_host.
*/
static host_t *get_end_host (private_traffic_selector_substructure_t *this)
{
return (host_create_from_chunk(AF_INET,this->ending_address, this->end_port));
}
/**
* Implementation of traffic_selector_substructure_t.set_end_host.
*/
static void set_end_host (private_traffic_selector_substructure_t *this,host_t *end_host)
{
this->end_port = end_host->get_port(end_host);
if (this->ending_address.ptr != NULL)
{
allocator_free_chunk(&(this->ending_address));
}
this->ending_address = end_host->get_address_as_chunk(end_host);
this->payload_length = TRAFFIC_SELECTOR_HEADER_LENGTH + this->starting_address.len + this->ending_address.len;
}
/**
* Implementation of payload_t.destroy and traffic_selector_substructure_t.destroy.
*/
static void destroy(private_traffic_selector_substructure_t *this)
{
if (this->starting_address.ptr != NULL)
{
allocator_free_chunk(&(this->starting_address));
}
if (this->ending_address.ptr != NULL)
{
allocator_free_chunk(&(this->ending_address));
}
allocator_free(this);
}
/*
* Described in header
*/
traffic_selector_substructure_t *traffic_selector_substructure_create(bool is_initiator)
{
private_traffic_selector_substructure_t *this = allocator_alloc_thing(private_traffic_selector_substructure_t);
/* interface functions */
this->public.payload_interface.verify = (status_t (*) (payload_t *))verify;
this->public.payload_interface.get_encoding_rules = (void (*) (payload_t *, encoding_rule_t **, size_t *) ) get_encoding_rules;
this->public.payload_interface.get_length = (size_t (*) (payload_t *)) get_length;
this->public.payload_interface.get_next_type = (payload_type_t (*) (payload_t *)) get_next_type;
this->public.payload_interface.set_next_type = (void (*) (payload_t *,payload_type_t)) set_next_type;
this->public.payload_interface.get_type = (payload_type_t (*) (payload_t *)) get_payload_type;
this->public.payload_interface.destroy = (void (*) (payload_t *))destroy;
/* public functions */
this->public.destroy = (void (*) (traffic_selector_substructure_t *)) destroy;
this->public.get_ts_type = (ts_type_t (*) (traffic_selector_substructure_t *)) get_ts_type;
this->public.set_ts_type = (void (*) (traffic_selector_substructure_t *,ts_type_t)) set_ts_type;
this->public.get_protocol_id = (u_int8_t (*) (traffic_selector_substructure_t *)) get_protocol_id;
this->public.set_protocol_id = (void (*) (traffic_selector_substructure_t *,u_int8_t)) set_protocol_id;
this->public.get_start_host = (host_t * (*) (traffic_selector_substructure_t *))get_start_host;
this->public.set_start_host = (void (*) (traffic_selector_substructure_t *, host_t *))set_start_host;
this->public.get_end_host = (host_t * (*) (traffic_selector_substructure_t *))get_end_host;
this->public.set_end_host = (void (*) (traffic_selector_substructure_t *, host_t *))set_end_host;
/* private variables */
this->payload_length =TRAFFIC_SELECTOR_HEADER_LENGTH;
this->start_port = 0;
this->end_port = 0;
this->starting_address = CHUNK_INITIALIZER;
this->ending_address = CHUNK_INITIALIZER;
this->ip_protocol_id = 0;
/* must be set to be valid */
this->ts_type = TS_IPV4_ADDR_RANGE;
return (&(this->public));
}