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/* Copyright (C) 2007-2010 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author James Riden <jamesr@europe.com>
*/
#ifndef __DECODE_PPPOE_H__
#define __DECODE_PPPOE_H__
// Session header length minus the protocol field
#define PPPOE_SESSION_HEADER_MIN_LEN 7
#define PPPOE_DISCOVERY_HEADER_MIN_LEN 6
#define PPPOE_SESSION_GET_VERSION(hdr) ((hdr)->pppoe_version_type & 0xF0) >> 4
#define PPPOE_SESSION_GET_TYPE(hdr) ((hdr)->pppoe_version_type & 0x0F)
#define PPPOE_DISCOVERY_GET_VERSION(hdr) ((hdr)->pppoe_version_type & 0xF0) >> 4
#define PPPOE_DISCOVERY_GET_TYPE(hdr) ((hdr)->pppoe_version_type & 0x0F)
typedef struct PPPOESessionHdr_
{
uint8_t pppoe_version_type;
uint8_t pppoe_code;
uint16_t session_id;
uint16_t pppoe_length;
uint16_t protocol;
} PPPOESessionHdr;
typedef struct PPPOEDiscoveryTag_
{
uint16_t pppoe_tag_type;
uint16_t pppoe_tag_length;
} __attribute__((__packed__)) PPPOEDiscoveryTag;
typedef struct PPPOEDiscoveryHdr_
{
uint8_t pppoe_version_type;
uint8_t pppoe_code;
uint16_t discovery_id;
uint16_t pppoe_length;
} __attribute__((__packed__)) PPPOEDiscoveryHdr;
/* see RFC 2516 - discovery codes */
#define PPPOE_CODE_PADI 0x09
#define PPPOE_CODE_PADO 0x07
#define PPPOE_CODE_PADR 0x19
#define PPPOE_CODE_PADS 0x65
#define PPPOE_CODE_PADT 0xa7
/* see RFC 2516 Appendix A */
#define PPPOE_TAG_END_OF_LIST 0x0000 /* End-Of-List */
#define PPPOE_TAG_SERVICE_NAME 0x0101 /* Service-Name */
#define PPPOE_TAG_AC_NAME 0x0102 /* AC-Name */
#define PPPOE_TAG_HOST_UNIQ 0x0103 /* Host-Uniq */
#define PPPOE_TAG_AC_COOKIE 0x0104 /* AC-Cookie */
#define PPPOE_TAG_VENDOR_SPECIFIC 0x0105 /* Vendor-Specific */
#define PPPOE_TAG_RELAY_SESSION_ID 0x0110 /* Relay-Session-Id */
#define PPPOE_TAG_SERVICE_NAME_ERROR 0x0201 /* Service-Name-Error */
#define PPPOE_TAG_AC_SYS_ERROR 0x0202 /* AC-System Error */
#define PPPOE_TAG_GEN_ERROR 0x0203 /* Generic-Error */
void DecodePPPOERegisterTests(void);
#endif /* __DECODE_PPPOE_H__ */
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