forked from osmocom/wireshark
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* asn1.h
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* Common data for ASN.1
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* 2007 Anders Broman
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __ASN1_H__
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#define __ASN1_H__
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typedef enum {
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ASN1_ENC_BER, /* X.690 - BER, CER, DER */
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ASN1_ENC_PER, /* X.691 - PER */
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ASN1_ENC_ECN, /* X.692 - ECN */
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ASN1_ENC_XER /* X.693 - XER */
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} asn1_enc_e;
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#define ASN1_CTX_SIGNATURE 0x41435458 /* "ACTX" */
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typedef struct _asn1_ctx_t {
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guint32 signature;
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asn1_enc_e encoding;
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gboolean aligned;
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packet_info *pinfo;
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proto_item *created_item;
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void *value_ptr;
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void *private_data;
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struct {
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tvbuff_t *data_value_descriptor;
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int hf_index;
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tvbuff_t *direct_reference;
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gint32 indirect_reference;
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guint32 encoding;
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tvbuff_t *single_asn1_type;
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tvbuff_t *octet_aligned;
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tvbuff_t *arbitrary;
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union {
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struct {
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int (*ber_callback)(gboolean imp_tag, tvbuff_t *tvb, int offset, struct _asn1_ctx_t* ,proto_tree *tree, int hf_index );
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tvbuff_t *direct_reference;
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gint32 indirect_reference;
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guint32 encoding;
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tvbuff_t *single_asn1_type;
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tvbuff_t *octet_aligned;
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tvbuff_t *arbitrary;
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} ber;
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struct {
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int (*type_cb)(tvbuff_t*, int, struct _asn1_ctx_t*, proto_tree*, int);
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} per;
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};
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} external;
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} asn1_ctx_t;
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extern void asn1_ctx_init(asn1_ctx_t *actx, asn1_enc_e encoding, gboolean aligned, packet_info *pinfo);
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extern gboolean asn1_ctx_check_signature(asn1_ctx_t *actx);
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extern void asn1_ctx_clean_external(asn1_ctx_t *actx);
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extern double asn1_get_real(const guint8 *real_ptr, gint real_len);
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/* flags */
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#define ASN1_EXT_ROOT 0x01
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#define ASN1_EXT_EXT 0x02
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#define ASN1_OPT 0x04
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#define ASN1_DFLT 0x08
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#define ASN1_HAS_EXT(f) ((f)&(ASN1_EXT_ROOT|ASN1_EXT_EXT))
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#endif /* __ASN1_H__ */
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