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- Implemented and tested eap_payload_t

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This commit is contained in:
Jan Hutter
2005-12-05 18:56:22 +00:00
parent 7ba3f707df
commit c81eb6e77c
14 changed files with 482 additions and 21 deletions
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Source/charon/encoding/generator.c
+5
View File
@@ -49,6 +49,7 @@
#include <encoding/payloads/vendor_id_payload.h>
#include <encoding/payloads/cp_payload.h>
#include <encoding/payloads/configuration_attribute.h>
#include <encoding/payloads/eap_payload.h>
typedef struct private_generator_t private_generator_t;
@@ -750,6 +751,7 @@ static void generate_payload (private_generator_t *this,payload_t *payload)
case SPIS:
case CONFIGURATION_ATTRIBUTE_VALUE:
case VID_DATA:
case EAP_MESSAGE:
{
u_int32_t payload_length_position_offset;
u_int16_t length_of_payload;
@@ -788,6 +790,9 @@ static void generate_payload (private_generator_t *this,payload_t *payload)
case CONFIGURATION_ATTRIBUTE_VALUE:
header_length = CONFIGURATION_ATTRIBUTE_HEADER_LENGTH;
break;
case EAP_MESSAGE:
header_length = EAP_PAYLOAD_HEADER_LENGTH;
break;
default:
break;
}
Source/charon/encoding/parser.c
+11
View File
@@ -50,6 +50,7 @@
#include <encoding/payloads/vendor_id_payload.h>
#include <encoding/payloads/cp_payload.h>
#include <encoding/payloads/configuration_attribute.h>
#include <encoding/payloads/eap_payload.h>
typedef struct private_parser_t private_parser_t;
@@ -873,6 +874,16 @@ static status_t parse_payload(private_parser_t *this, payload_type_t payload_typ
}
break;
}
case EAP_MESSAGE:
{
size_t data_length = payload_length - EAP_PAYLOAD_HEADER_LENGTH;
if (this->parse_chunk(this, rule_number, output + rule->offset, data_length) != SUCCESS)
{
pld->destroy(pld);
return PARSE_ERROR;
}
break;
}
case SPIS:
{
size_t data_length = payload_length - DELETE_PAYLOAD_HEADER_LENGTH;
Source/charon/encoding/payloads/Makefile.payloads
+3
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@@ -66,6 +66,9 @@ OBJS+= $(BUILD_DIR)configuration_attribute.o
$(BUILD_DIR)configuration_attribute.o : $(PAYLOADS_DIR)configuration_attribute.c $(PAYLOADS_DIR)configuration_attribute.h
$(CC) $(CFLAGS) -c -o $@ $<
OBJS+= $(BUILD_DIR)eap_payload.o
$(BUILD_DIR)eap_payload.o : $(PAYLOADS_DIR)eap_payload.c $(PAYLOADS_DIR)eap_payload.h
$(CC) $(CFLAGS) -c -o $@ $<
OBJS+= $(BUILD_DIR)ts_payload.o
$(BUILD_DIR)ts_payload.o : $(PAYLOADS_DIR)ts_payload.c $(PAYLOADS_DIR)ts_payload.h
Source/charon/encoding/payloads/eap_payload.c
+232
View File
@@ -0,0 +1,232 @@
/**
* @file eap_payload.c
*
* @brief Implementation of eap_payload_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 "eap_payload.h"
#include <utils/allocator.h>
typedef struct private_eap_payload_t private_eap_payload_t;
/**
* Private data of an eap_payload_t object.
*
*/
struct private_eap_payload_t {
/**
* Public eap_payload_t interface.
*/
eap_payload_t public;
/**
* Next payload type.
*/
u_int8_t next_payload;
/**
* Critical flag.
*/
bool critical;
/**
* Length of this payload.
*/
u_int16_t payload_length;
/**
* The contained message.
*/
chunk_t message;
};
/**
* Encoding rules to parse or generate a EAP payload.
*
* The defined offsets are the positions in a object of type
* private_eap_payload_t.
*
*/
encoding_rule_t eap_payload_encodings[] = {
/* 1 Byte next payload type, stored in the field next_payload */
{ U_INT_8, offsetof(private_eap_payload_t, next_payload) },
/* the critical bit */
{ FLAG, offsetof(private_eap_payload_t, critical) },
/* 7 Bit reserved bits, nowhere stored */
{ RESERVED_BIT, 0 },
{ RESERVED_BIT, 0 },
{ RESERVED_BIT, 0 },
{ RESERVED_BIT, 0 },
{ RESERVED_BIT, 0 },
{ RESERVED_BIT, 0 },
{ RESERVED_BIT, 0 },
/* Length of the whole payload*/
{ PAYLOAD_LENGTH, offsetof(private_eap_payload_t, payload_length)},
/* some eap data bytes, length is defined in PAYLOAD_LENGTH */
{ EAP_MESSAGE, offsetof(private_eap_payload_t, message) }
};
/*
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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! Next Payload !C! RESERVED ! Payload Length !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! !
~ EAP Message ~
! !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
/**
* Implementation of payload_t.verify.
*/
static status_t verify(private_eap_payload_t *this)
{
if (this->critical)
{
/* critical bit is set! */
return FAILED;
}
return SUCCESS;
}
/**
* Implementation of eap_payload_t.get_encoding_rules.
*/
static void get_encoding_rules(private_eap_payload_t *this, encoding_rule_t **rules, size_t *rule_count)
{
*rules = eap_payload_encodings;
*rule_count = sizeof(eap_payload_encodings) / sizeof(encoding_rule_t);
}
/**
* Implementation of payload_t.get_type.
*/
static payload_type_t get_payload_type(private_eap_payload_t *this)
{
return EXTENSIBLE_AUTHENTICATION;
}
/**
* Implementation of payload_t.get_next_type.
*/
static payload_type_t get_next_type(private_eap_payload_t *this)
{
return (this->next_payload);
}
/**
* Implementation of payload_t.set_next_type.
*/
static void set_next_type(private_eap_payload_t *this,payload_type_t type)
{
this->next_payload = type;
}
/**
* Implementation of payload_t.get_length.
*/
static size_t get_length(private_eap_payload_t *this)
{
return this->payload_length;
}
/**
* Implementation of eap_payload_t.set_message.
*/
static void set_message (private_eap_payload_t *this, chunk_t message)
{
if (this->message.ptr != NULL)
{
allocator_free_chunk(&(this->message));
}
this->message.ptr = allocator_clone_bytes(message.ptr,message.len);
this->message.len = message.len;
this->payload_length = EAP_PAYLOAD_HEADER_LENGTH + this->message.len;
}
/**
* Implementation of eap_payload_t.get_message.
*/
static chunk_t get_message (private_eap_payload_t *this)
{
return (this->message);
}
/**
* Implementation of eap_payload_t.get_data_clone.
*/
static chunk_t get_message_clone (private_eap_payload_t *this)
{
chunk_t cloned_message;
if (this->message.ptr == NULL)
{
return (this->message);
}
cloned_message.ptr = allocator_clone_bytes(this->message.ptr,this->message.len);
cloned_message.len = this->message.len;
return cloned_message;
}
/**
* Implementation of payload_t.destroy and eap_payload_t.destroy.
*/
static void destroy(private_eap_payload_t *this)
{
if (this->message.ptr != NULL)
{
allocator_free_chunk(&(this->message));
}
allocator_free(this);
}
/*
* Described in header
*/
eap_payload_t *eap_payload_create()
{
private_eap_payload_t *this = allocator_alloc_thing(private_eap_payload_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 (*) (eap_payload_t *)) destroy;
this->public.set_message = (void (*) (eap_payload_t *,chunk_t)) set_message;
this->public.get_message_clone = (chunk_t (*) (eap_payload_t *)) get_message_clone;
this->public.get_message = (chunk_t (*) (eap_payload_t *)) get_message;
/* private variables */
this->critical = FALSE;
this->next_payload = NO_PAYLOAD;
this->payload_length = EAP_PAYLOAD_HEADER_LENGTH;
this->message = CHUNK_INITIALIZER;
return (&(this->public));
}
Source/charon/encoding/payloads/eap_payload.h
+101
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@@ -0,0 +1,101 @@
/**
* @file eap_payload.h
*
* @brief Interface of eap_payload_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.
*/
#ifndef _EAP_PAYLOAD_H_
#define _EAP_PAYLOAD_H_
#include <types.h>
#include <encoding/payloads/payload.h>
/**
* Length of a EAP payload without the EAP Message in bytes.
*
* @ingroup payloads
*/
#define EAP_PAYLOAD_HEADER_LENGTH 4
typedef struct eap_payload_t eap_payload_t;
/**
* Object representing an IKEv2 EAP payload.
*
* The EAP payload format is described in draft section 3.16.
*
* @ingroup payloads
*
*/
struct eap_payload_t {
/**
* The payload_t interface.
*/
payload_t payload_interface;
/**
* @brief Set the EAP Message.
*
* Data are getting cloned.
*
* @param this calling eap_payload_t object
* @param message EAP message as chunk_t
*/
void (*set_message) (eap_payload_t *this, chunk_t message);
/**
* @brief Get the EAP message.
*
* Returned data are a copy of the internal one.
*
* @param this calling eap_payload_t object
* @return EAP message as chunk_t
*/
chunk_t (*get_message_clone) (eap_payload_t *this);
/**
* @brief Get the EAP message.
*
* Returned data are NOT copied.
*
* @param this calling eap_payload_t object
* @return EAP message as chunk_t
*/
chunk_t (*get_message) (eap_payload_t *this);
/**
* @brief Destroys an eap_payload_t object.
*
* @param this eap_payload_t object to destroy
*/
void (*destroy) (eap_payload_t *this);
};
/**
* @brief Creates an empty eap_payload_t object.
*
* @return created eap_payload_t object
*
* @ingroup payloads
*/
eap_payload_t *eap_payload_create();
#endif //_EAP_PAYLOAD_H_
Source/charon/encoding/payloads/encodings.c
+1 -1
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@@ -62,6 +62,6 @@ mapping_t encoding_type_m[] = {
{CONFIGURATION_ATTRIBUTES, "CONFIGURATION_ATTRIBUTES"},
{CONFIGURATION_ATTRIBUTE_LENGTH, "CONFIGURATION_ATTRIBUTE_LENGTH"},
{CONFIGURATION_ATTRIBUTE_VALUE, "CONFIGURATION_ATTRIBUTE_VALUE"},
{EAP_MESSAGE, "EAP_MESSAGE"},
{MAPPING_END, NULL}
};
Source/charon/encoding/payloads/encodings.h
+10
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@@ -425,6 +425,16 @@ enum encoding_type_t{
*/
CERTREQ_DATA,
/**
* Representating an EAP message field.
*
* When generating the content of the chunkt pointing to
* is written.
*
* When parsing (Payload Length - 4) bytes are read and written into the chunk pointing to.
*/
EAP_MESSAGE,
/**
* Representating the SPIS field in a DELETE payload.
*
Source/charon/encoding/payloads/payload.c
+3
View File
@@ -39,6 +39,7 @@
#include <encoding/payloads/vendor_id_payload.h>
#include <encoding/payloads/cp_payload.h>
#include <encoding/payloads/configuration_attribute.h>
#include <encoding/payloads/eap_payload.h>
/*
* build the mappings for payload_type_t
@@ -117,6 +118,8 @@ payload_t *payload_create(payload_type_t type)
return (payload_t*)cp_payload_create();
case CONFIGURATION_ATTRIBUTE:
return (payload_t*)configuration_attribute_create();
case EXTENSIBLE_AUTHENTICATION:
return (payload_t*)eap_payload_create();
case ENCRYPTED:
return (payload_t*)encryption_payload_create();
default: