radius_pdu.def

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/*
 * radius_pdu.def - definitions of RADIUS Accounting PDU structure
 *
 * We implement a RADIUS accounting proxy to overcome the gap in the WAP
 * stack that no MSISDN numbers are transported. Basically this is needed
 * to map client IPs of the remote WAP/MMS clients to their MSISDN for various
 * purposes. Ie. for WAP application a special HTTP header is added to identify
 * the WAP client via it's MSISDN and to allow personalization of mobile content.
 * For Kannel's MMSC we need mapping of client IP to MSISDN numbers to replace
 * MMS "From:" header to the originator MSISDN.
 *
 * References:
 *   RFC2865 "Remote Authentication Dial In User Service (RADIUS)"
 *   RFC2866 "RADIUS Accounting"
 *
 * Stipe Tolj <stolj@wapme.de>
 */

#ifndef PDU
#error Macro PDU not defined.
#endif

#ifndef INTEGER
#error Macro INTEGER not defined.
#endif

#ifndef OCTETS
#error Macro OCTETS not defined.
#endif


/*
 * All RADIUS PDUs have a common header consisting of 20 octets:
 *
 *   Code: 1 octet (identifies PDU type)
 *   Identifier: 1 octet (sort of sequence number)
 *   Length: 2 octets (full length of the PDU)
 *   Authenticator: 16 octets containing the MD5 hash 
 *
 * (see RFC2866, page 5)
 */
#ifdef HEADER
#error Macro HEADER was already defined.
#endif
#define HEADER  \
    INTEGER(code, 1) \
    INTEGER(identifier, 1) \
    INTEGER(length, 2) \
    OCTETS(authenticator, 16)

/*
 * Note: Remember that we only add attibutes that interest us for our RADIUS 
 * accounting proxy. If you need more, then add them to the corresponding PDUs.
 */

PDU(Accounting_Request,
    0x04,
    HEADER
)

PDU(Accounting_Response,
    0x05,
    HEADER
)


#undef PDU
#undef INTEGER
#undef OCTETS
#undef HEADER

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