2 * RADIUS tlv construction and parsing utilites
3 * Copyright (c) 2012, Painless Security, LLC
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
15 #ifndef RADIUS_UTILS_H
16 #define RADIUS_UTILS_H
19 struct radius_parser_struct;
20 typedef struct radius_parser_struct *radius_parser;
27 * Simple utility to add a single type-length-value attribute to a buffer.
28 * Currently, there is no dictionary support: 'type' and 'len' are always
29 * assumed to be octets, and data is placed directly into buf untranslated
30 * for byte order. If vendor is zero, len should be no greater than 253
31 * otherwise, no greater than 247.
32 * returns 0 on success, -1 on failure (allocation failure or len too large)
34 int radius_add_tlv(struct wpabuf **buf, u32 type, u32 vendor, u8 *data,
38 * simple radius parser
39 * Could be made considerably simpler by dropping support for parsing multiple
40 * sub-attributes from a vsa.
44 * create parser object
46 radius_parser radius_parser_start(void *tlvdata, size_t len);
50 * There is no dictionary support; if the tlv is a vsa (attribute 26),
51 * sub-attributes are not immediately parsed: instead, the raw data is returned
53 * returns 0 on success, -1 on failure (malformed buffer or end of buffer)
55 int radius_parser_parse_tlv(radius_parser parser, u8 *type, u32 *vendor_id,
56 void **value, size_t *len);
59 * parse a single sub-attribute of a vsa: assumes octets for
61 * returns 0 on success, -1 on failure (malformed buffer or end of buffer)
63 int radius_parser_parse_vendor_specific(radius_parser parser, u8 *vendor_type,
64 void **value, size_t *len);
67 * destroy parser object
69 void radius_parser_finish(radius_parser parser);
75 #endif /* RADIUS_UTILS_H */