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/* oids.h
* Definitions for OBJECT IDENTIFIER operations
*
* $Id$
*
* (c) 2007, Luis E. Garcia Ontanon <luis.ontanon@gmail.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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.
*
* 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __OIDS_H__
#define __OIDS_H__
#define BER_TAG_ANY -1
struct _oid_bit_t {
guint offset;
int hfid;
};
typedef struct _oid_bits_info_t {
guint num;
gint ett;
struct _oid_bit_t* data;
} oid_bits_info_t;
typedef struct _oid_value_type_t {
enum ftenum ft_type;
int display;
gint8 ber_class;
gint32 ber_tag;
int min_len;
int max_len;
} oid_value_type_t;
typedef struct _oid_info_t {
guint32 subid;
char* name;
void* children; /* an emem_tree_t* */
const oid_value_type_t* value_type;
int value_hfid;
oid_bits_info_t* bits;
struct _oid_info_t* parent;
} oid_info_t;
/* init funcion called from epan.h */
extern void oid_init(void);
/*
* The objects returned by all these functions are all allocated with a
* packet lifetime and does not have have to be freed.
* However, take into account that when the packet dissection
* completes, these buffers will be automatically reclaimed/freed.
* If you need the buffer to remain for a longer scope than packet lifetime
* you must copy the content to an se_alloc() buffer.
*/
/*
* These functions convert through the various formats:
* string: is like "0.1.3.4.5.30" (not resolved)
* encoded: is BER encoded (as per X.690 section 8.19)
* subids: is an array of guint32s
*/
/* return lenght of encoded buffer */
guint oid_subid2encoded(guint len, guint32* subids, guint8** encoded_p);
guint oid_string2encoded(const gchar *oid_str, guint8** encoded_p);
/* return lenght of subid array */
guint oid_encoded2subid(const guint8 *oid, gint len, guint32** subids_p);
guint oid_string2subid(const gchar *oid_str, guint32** subids_p);
extern const gchar* oid_encoded2string(const guint8* encoded, guint len);
extern const gchar* oid_subid2string(guint32 *subids, guint len);
/* these return a formated string as human readable as posible */
extern const gchar *oid_resolved(guint len, guint32 *subids);
extern const gchar *oid_resolved_from_encoded(const guint8 *oid, gint len);
extern const gchar *oid_resolved_from_string(const gchar *oid_str);
/* these yield two formated strings one resolved and one numeric */
extern void oid_both(guint oid_len, guint32 *subids, char** resolved_p, char** numeric_p);
extern void oid_both_from_encoded(const guint8 *oid, gint oid_len, char** resolved_p, char** numeric_p);
extern void oid_both_from_string(const gchar *oid_str, char** resolved_p, char** numeric_p);
/*
* These return the info for the best match.
* *matched_p will be set to the number of nodes used by the returned oid
* *left_p will be set to the number of remaining unresolved subids
*/
extern oid_info_t* oid_get(guint oid_len, guint32 *subids, guint* matched_p, guint* left_p);
extern oid_info_t* oid_get_from_encoded(const guint8 *oid, gint oid_len, guint* matched, guint* left);
extern oid_info_t* oid_get_from_string(const gchar *oid_str, guint* matched, guint* left);
/* these are used to add oids to the collection */
extern void oid_add(char* name, guint oid_len, guint32 *subids);
extern void oid_add_from_encoded(char* name, const guint8 *oid, gint oid_len);
extern void oid_add_from_string(char* name, const gchar *oid_str);
#endif
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