2011-05-30 19:30:09 +00:00
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/*
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2012-08-20 20:37:08 +00:00
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* Copyright (C) 2011-2012 Andreas Steffen
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* HSR Hochschule fuer Technik Rapperswil
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2011-05-30 19:30:09 +00:00
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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 "ietf_attr_pa_tnc_error.h"
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2011-06-05 21:24:48 +00:00
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#include <pa_tnc/pa_tnc_msg.h>
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2011-06-01 14:33:09 +00:00
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#include <bio/bio_writer.h>
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2011-06-05 21:24:48 +00:00
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#include <bio/bio_reader.h>
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2011-05-30 19:30:09 +00:00
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#include <debug.h>
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ENUM(pa_tnc_error_code_names, PA_ERROR_RESERVED,
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PA_ERROR_ATTR_TYPE_NOT_SUPPORTED,
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"Reserved",
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"Invalid Parameter",
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"Version Not Supported",
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"Attribute Type Not Supported"
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);
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2011-06-01 14:33:09 +00:00
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typedef struct private_ietf_attr_pa_tnc_error_t private_ietf_attr_pa_tnc_error_t;
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2011-05-30 19:30:09 +00:00
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/**
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* PA-TNC Error Attribute Type (see section 4.2.8 of RFC 5792)
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*
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2011-07-13 20:18:32 +00:00
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* 1 2 3
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2011-05-30 19:30:09 +00:00
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Reserved | PA-TNC Error Code Vendor ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | PA-TNC Error Code |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Error Information (Variable Length) |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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2011-06-05 21:24:48 +00:00
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#define PA_ERROR_HEADER_SIZE 8
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#define PA_ERROR_RESERVED 0x00
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/**
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2011-09-01 19:00:20 +00:00
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* All IETF Error Types return the first 8 bytes of the erroneous PA-TNC message
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2011-06-05 21:24:48 +00:00
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*
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2011-07-13 20:18:32 +00:00
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* 1 2 3
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2011-06-05 21:24:48 +00:00
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Version | Copy of Reserved |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Message Identifier |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#define PA_ERROR_MSG_INFO_SIZE 8
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2011-09-01 19:00:20 +00:00
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#define PA_ERROR_MSG_INFO_MAX_SIZE 1024
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2011-06-05 21:24:48 +00:00
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2011-07-13 20:18:32 +00:00
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/**
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* "Invalid Parameter" Error Code
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* 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Offset |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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2011-06-05 21:24:48 +00:00
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/**
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* "Version Not Supported" Error Code
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*
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2011-07-13 20:18:32 +00:00
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* 1 2 3
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2011-06-05 21:24:48 +00:00
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Max Version | Min Version | Reserved |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#define PA_ERROR_VERSION_RESERVED 0x0000
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/**
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* "Attribute Type Not Supported" Error Code
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*
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* 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Flags | PA-TNC Attribute Vendor ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | PA-TNC Attribute Type |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#define PA_ERROR_ATTR_INFO_SIZE 8
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2011-05-30 19:30:09 +00:00
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/**
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* Private data of an ietf_attr_pa_tnc_error_t object.
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*/
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struct private_ietf_attr_pa_tnc_error_t {
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/**
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* Public members of ietf_attr_pa_tnc_error_t
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*/
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ietf_attr_pa_tnc_error_t public;
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/**
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2012-08-20 20:37:08 +00:00
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* Vendor-specific attribute type
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2011-05-30 19:30:09 +00:00
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*/
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2012-08-20 20:37:08 +00:00
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pen_type_t type;
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2011-05-30 19:30:09 +00:00
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/**
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* Attribute value
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*/
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chunk_t value;
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/**
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* Noskip flag
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*/
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bool noskip_flag;
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/**
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2012-08-20 20:37:08 +00:00
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* Vendor-specific error code
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2011-05-30 19:30:09 +00:00
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*/
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2012-08-20 20:37:08 +00:00
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pen_type_t error_code;
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2011-05-30 19:30:09 +00:00
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2011-06-01 14:33:09 +00:00
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/**
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2011-06-05 21:24:48 +00:00
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* First 8 bytes of erroneous PA-TNC message
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2011-06-01 14:33:09 +00:00
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*/
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2011-06-05 21:24:48 +00:00
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chunk_t msg_info;
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/**
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* First 8 bytes of unsupported PA-TNC attribute
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*/
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chunk_t attr_info;
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2011-06-03 14:39:27 +00:00
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2011-07-13 20:18:32 +00:00
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/**
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* PA-TNC error offset
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*/
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u_int32_t error_offset;
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2011-06-03 14:39:27 +00:00
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/**
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* Reference count
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*/
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refcount_t ref;
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2011-05-30 19:30:09 +00:00
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};
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2012-08-20 20:37:08 +00:00
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METHOD(pa_tnc_attr_t, get_type, pen_type_t,
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2011-05-30 19:30:09 +00:00
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private_ietf_attr_pa_tnc_error_t *this)
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{
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return this->type;
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}
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METHOD(pa_tnc_attr_t, get_value, chunk_t,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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return this->value;
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}
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METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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return this->noskip_flag;
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}
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METHOD(pa_tnc_attr_t, set_noskip_flag,void,
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private_ietf_attr_pa_tnc_error_t *this, bool noskip)
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{
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this->noskip_flag = noskip;
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}
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METHOD(pa_tnc_attr_t, build, void,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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2011-06-01 14:33:09 +00:00
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bio_writer_t *writer;
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2012-07-12 10:49:49 +00:00
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if (this->value.ptr)
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{
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return;
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}
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2011-06-05 21:24:48 +00:00
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writer = bio_writer_create(PA_ERROR_HEADER_SIZE + PA_ERROR_MSG_INFO_SIZE);
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writer->write_uint8 (writer, PA_ERROR_RESERVED);
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2012-08-20 20:37:08 +00:00
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writer->write_uint24(writer, this->error_code.vendor_id);
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writer->write_uint32(writer, this->error_code.type);
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2011-06-05 21:24:48 +00:00
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writer->write_data (writer, this->msg_info);
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2012-08-20 20:37:08 +00:00
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if (this->error_code.vendor_id == PEN_IETF)
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2011-06-05 21:24:48 +00:00
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{
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2012-08-20 20:37:08 +00:00
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switch (this->error_code.type)
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2011-09-01 19:00:20 +00:00
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{
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case PA_ERROR_INVALID_PARAMETER:
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writer->write_uint32(writer, this->error_offset);
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break;
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case PA_ERROR_VERSION_NOT_SUPPORTED:
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writer->write_uint8 (writer, PA_TNC_VERSION);
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writer->write_uint8 (writer, PA_TNC_VERSION);
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writer->write_uint16(writer, PA_ERROR_VERSION_RESERVED);
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break;
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case PA_ERROR_ATTR_TYPE_NOT_SUPPORTED:
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writer->write_data(writer, this->attr_info);
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break;
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default:
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break;
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}
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2011-06-05 21:24:48 +00:00
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}
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2011-06-01 14:33:09 +00:00
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this->value = chunk_clone(writer->get_buf(writer));
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writer->destroy(writer);
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2011-05-30 19:30:09 +00:00
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}
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METHOD(pa_tnc_attr_t, process, status_t,
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2011-07-13 20:18:32 +00:00
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private_ietf_attr_pa_tnc_error_t *this, u_int32_t *offset)
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2011-05-30 19:30:09 +00:00
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{
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2011-06-05 21:24:48 +00:00
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bio_reader_t *reader;
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u_int8_t reserved;
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2011-09-01 19:00:20 +00:00
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if (this->value.len < PA_ERROR_HEADER_SIZE)
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2011-06-05 21:24:48 +00:00
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{
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2011-09-01 19:00:20 +00:00
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DBG1(DBG_TNC, "insufficient data for PA-TNC error header");
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2011-07-13 20:18:32 +00:00
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*offset = 0;
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2011-06-05 21:24:48 +00:00
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return FAILED;
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}
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reader = bio_reader_create(this->value);
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reader->read_uint8 (reader, &reserved);
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2012-08-20 20:37:08 +00:00
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reader->read_uint24(reader, &this->error_code.vendor_id);
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reader->read_uint32(reader, &this->error_code.type);
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2011-06-05 21:24:48 +00:00
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2012-08-20 20:37:08 +00:00
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if (this->error_code.vendor_id == PEN_IETF)
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2011-09-01 19:00:20 +00:00
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{
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if (!reader->read_data(reader, PA_ERROR_MSG_INFO_SIZE, &this->msg_info))
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{
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reader->destroy(reader);
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DBG1(DBG_TNC, "insufficient data for IETF error information");
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*offset = PA_ERROR_HEADER_SIZE;
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return FAILED;
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}
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this->msg_info = chunk_clone(this->msg_info);
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2012-08-20 20:37:08 +00:00
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switch (this->error_code.type)
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2011-09-01 19:00:20 +00:00
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{
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case PA_ERROR_INVALID_PARAMETER:
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if (!reader->read_uint32(reader, &this->error_offset))
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{
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reader->destroy(reader);
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DBG1(DBG_TNC, "insufficient data for error offset field");
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*offset = PA_ERROR_HEADER_SIZE + PA_ERROR_MSG_INFO_SIZE;
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return FAILED;
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}
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break;
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case PA_ERROR_ATTR_TYPE_NOT_SUPPORTED:
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if (!reader->read_data(reader, PA_ERROR_ATTR_INFO_SIZE,
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&this->attr_info))
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{
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reader->destroy(reader);
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DBG1(DBG_TNC, "insufficient data for unsupported attribute "
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"information");
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*offset = PA_ERROR_HEADER_SIZE + PA_ERROR_MSG_INFO_SIZE;
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return FAILED;
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}
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this->attr_info = chunk_clone(this->attr_info);
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break;
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default:
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break;
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}
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}
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else
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2011-06-05 21:24:48 +00:00
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{
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2011-09-01 19:00:20 +00:00
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reader->read_data(reader, reader->remaining(reader), &this->msg_info);
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this->msg_info = chunk_clone(this->msg_info);
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2011-06-05 21:24:48 +00:00
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}
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reader->destroy(reader);
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2011-05-30 19:30:09 +00:00
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return SUCCESS;
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}
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2011-06-03 14:39:27 +00:00
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METHOD(pa_tnc_attr_t, get_ref, pa_tnc_attr_t*,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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ref_get(&this->ref);
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return &this->public.pa_tnc_attribute;
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}
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2011-05-30 19:30:09 +00:00
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METHOD(pa_tnc_attr_t, destroy, void,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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2011-06-03 14:39:27 +00:00
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if (ref_put(&this->ref))
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{
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2011-06-05 21:24:48 +00:00
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free(this->value.ptr);
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free(this->msg_info.ptr);
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free(this->attr_info.ptr);
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2011-06-03 14:39:27 +00:00
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free(this);
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}
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2011-05-30 19:30:09 +00:00
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}
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2012-08-20 20:37:08 +00:00
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METHOD(ietf_attr_pa_tnc_error_t, get_error_code, pen_type_t,
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2011-05-30 19:30:09 +00:00
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private_ietf_attr_pa_tnc_error_t *this)
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{
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return this->error_code;
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}
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2011-06-05 21:24:48 +00:00
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METHOD(ietf_attr_pa_tnc_error_t, get_msg_info, chunk_t,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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return this->msg_info;
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}
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METHOD(ietf_attr_pa_tnc_error_t, get_attr_info, chunk_t,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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return this->attr_info;
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}
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METHOD(ietf_attr_pa_tnc_error_t, set_attr_info, void,
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private_ietf_attr_pa_tnc_error_t *this, chunk_t attr_info)
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{
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this->attr_info = chunk_clone(attr_info);
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}
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2011-07-13 20:18:32 +00:00
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METHOD(ietf_attr_pa_tnc_error_t, get_offset, u_int32_t,
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private_ietf_attr_pa_tnc_error_t *this)
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{
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return this->error_offset;
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}
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2011-05-30 19:30:09 +00:00
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/**
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* Described in header.
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*/
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2012-08-20 20:37:08 +00:00
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pa_tnc_attr_t *ietf_attr_pa_tnc_error_create(pen_type_t error_code,
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2011-06-05 21:24:48 +00:00
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chunk_t msg_info)
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2011-05-30 19:30:09 +00:00
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{
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private_ietf_attr_pa_tnc_error_t *this;
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2012-08-20 20:37:08 +00:00
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if (error_code.vendor_id == PEN_IETF)
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2011-09-01 19:00:20 +00:00
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{
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msg_info.len = PA_ERROR_MSG_INFO_SIZE;
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}
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else if (msg_info.len > PA_ERROR_MSG_INFO_MAX_SIZE)
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{
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msg_info.len = PA_ERROR_MSG_INFO_MAX_SIZE;
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}
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2011-06-01 14:33:09 +00:00
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2011-05-30 19:30:09 +00:00
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INIT(this,
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.public = {
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.pa_tnc_attribute = {
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.get_type = _get_type,
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.get_value = _get_value,
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.get_noskip_flag = _get_noskip_flag,
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.set_noskip_flag = _set_noskip_flag,
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.build = _build,
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.process = _process,
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2011-06-03 14:39:27 +00:00
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.get_ref = _get_ref,
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2011-05-30 19:30:09 +00:00
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.destroy = _destroy,
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},
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.get_error_code = _get_error_code,
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2011-06-05 21:24:48 +00:00
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.get_msg_info = _get_msg_info,
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.get_attr_info = _get_attr_info,
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.set_attr_info = _set_attr_info,
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2011-07-13 20:18:32 +00:00
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.get_offset = _get_offset,
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},
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2012-08-20 20:37:08 +00:00
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.type = { PEN_IETF, IETF_ATTR_PA_TNC_ERROR },
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2011-07-13 20:18:32 +00:00
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.error_code = error_code,
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.msg_info = chunk_clone(msg_info),
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.ref = 1,
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);
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return &this->public.pa_tnc_attribute;
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}
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/**
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* Described in header.
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*/
|
2012-08-20 20:37:08 +00:00
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pa_tnc_attr_t *ietf_attr_pa_tnc_error_create_with_offset(pen_type_t error_code,
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2011-07-13 20:18:32 +00:00
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chunk_t msg_info,
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u_int32_t error_offset)
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{
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private_ietf_attr_pa_tnc_error_t *this;
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/* the first 8 bytes of the erroneous PA-TNC message are sent back */
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msg_info.len = PA_ERROR_MSG_INFO_SIZE;
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INIT(this,
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.public = {
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.pa_tnc_attribute = {
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.get_type = _get_type,
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.get_value = _get_value,
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.get_noskip_flag = _get_noskip_flag,
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.set_noskip_flag = _set_noskip_flag,
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.build = _build,
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.process = _process,
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.get_ref = _get_ref,
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.destroy = _destroy,
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},
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.get_error_code = _get_error_code,
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.get_msg_info = _get_msg_info,
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.get_attr_info = _get_attr_info,
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.set_attr_info = _set_attr_info,
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.get_offset = _get_offset,
|
2011-05-30 19:30:09 +00:00
|
|
|
},
|
2012-08-20 20:37:08 +00:00
|
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.type = { PEN_IETF, IETF_ATTR_PA_TNC_ERROR },
|
2011-05-30 19:30:09 +00:00
|
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.error_code = error_code,
|
2011-06-05 21:24:48 +00:00
|
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.msg_info = chunk_clone(msg_info),
|
2011-07-13 20:18:32 +00:00
|
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|
.error_offset = error_offset,
|
2011-06-03 14:39:27 +00:00
|
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.ref = 1,
|
2011-05-30 19:30:09 +00:00
|
|
|
);
|
|
|
|
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|
return &this->public.pa_tnc_attribute;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Described in header.
|
|
|
|
*/
|
|
|
|
pa_tnc_attr_t *ietf_attr_pa_tnc_error_create_from_data(chunk_t data)
|
|
|
|
{
|
|
|
|
private_ietf_attr_pa_tnc_error_t *this;
|
|
|
|
|
|
|
|
INIT(this,
|
|
|
|
.public = {
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|
|
|
.pa_tnc_attribute = {
|
|
|
|
.get_type = _get_type,
|
|
|
|
.get_value = _get_value,
|
|
|
|
.build = _build,
|
|
|
|
.process = _process,
|
2011-06-03 14:39:27 +00:00
|
|
|
.get_ref = _get_ref,
|
2011-05-30 19:30:09 +00:00
|
|
|
.destroy = _destroy,
|
|
|
|
},
|
|
|
|
.get_error_code = _get_error_code,
|
2011-06-05 21:24:48 +00:00
|
|
|
.get_msg_info = _get_msg_info,
|
|
|
|
.get_attr_info = _get_attr_info,
|
|
|
|
.set_attr_info = _set_attr_info,
|
2011-07-13 20:18:32 +00:00
|
|
|
.get_offset = _get_offset,
|
2011-05-30 19:30:09 +00:00
|
|
|
},
|
2012-08-20 20:37:08 +00:00
|
|
|
.type = { PEN_IETF, IETF_ATTR_PA_TNC_ERROR },
|
2011-05-30 19:30:09 +00:00
|
|
|
.value = chunk_clone(data),
|
2011-06-03 14:39:27 +00:00
|
|
|
.ref = 1,
|
2011-05-30 19:30:09 +00:00
|
|
|
);
|
|
|
|
|
|
|
|
return &this->public.pa_tnc_attribute;
|
|
|
|
}
|
|
|
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|