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/** @file
*
* Common data for ASN.1
* 2007 Anders Broman
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __ASN1_H__
#define __ASN1_H__
#include "ws_symbol_export.h"
typedef enum {
ASN1_ENC_BER, /* X.690 - BER, CER, DER */
ASN1_ENC_PER, /* X.691 - PER */
ASN1_ENC_ECN, /* X.692 - ECN */
ASN1_ENC_XER, /* X.693 - XER */
ASN1_ENC_OER /* X.696 - OER */
} asn1_enc_e;
typedef enum {
CB_ASN1_ENC,
CB_NEW_DISSECTOR,
CB_DISSECTOR_HANDLE
} asn1_cb_variant;
typedef enum {
ASN1_PAR_IRR, /* irrelevant parameter */
/* value */
ASN1_PAR_BOOLEAN,
ASN1_PAR_INTEGER,
/* type */
ASN1_PAR_TYPE
} asn1_par_type;
typedef struct _asn1_par_def_t {
const gchar *name;
asn1_par_type ptype;
} asn1_par_def_t;
typedef struct _asn1_par_t {
const gchar *name;
asn1_par_type ptype;
union {
bool v_boolean;
gint32 v_integer;
void *v_type;
} value;
struct _asn1_par_t *next;
} asn1_par_t;
typedef struct _asn1_stack_frame_t {
const gchar *name;
struct _asn1_par_t *par;
struct _asn1_stack_frame_t *next;
} asn1_stack_frame_t;
#define ASN1_CTX_SIGNATURE 0x41435458 /* "ACTX" */
typedef struct _asn1_ctx_t {
guint32 signature;
asn1_enc_e encoding;
bool aligned;
packet_info *pinfo;
proto_item *created_item;
struct _asn1_stack_frame_t *stack;
void *value_ptr;
void *private_data;
struct {
int hf_index;
bool data_value_descr_present;
bool direct_ref_present;
bool indirect_ref_present;
tvbuff_t *data_value_descriptor;
const char *direct_reference;
gint32 indirect_reference;
gint encoding;
/*
0 : single-ASN1-type,
1 : octet-aligned,
2 : arbitrary
*/
tvbuff_t *single_asn1_type;
tvbuff_t *octet_aligned;
tvbuff_t *arbitrary;
union {
struct {
int (*ber_callback)(bool imp_tag, tvbuff_t *tvb, int offset, struct _asn1_ctx_t* ,proto_tree *tree, int hf_index );
} ber;
struct {
int (*type_cb)(tvbuff_t*, int, struct _asn1_ctx_t*, proto_tree*, int);
} per;
} u;
} external;
struct {
proto_tree *tree;
proto_tree *top_tree;
void* tree_ctx;
} subtree;
struct {
int hf_index;
bool data_value_descr_present;
tvbuff_t *data_value_descriptor;
gint identification;
/*
0 : syntaxes,
1 : syntax,
2 : presentation-context-id,
3 : context-negotiation,
4 : transfer-syntax,
5 : fixed
*/
gint32 presentation_context_id;
const char *abstract_syntax;
const char *transfer_syntax;
tvbuff_t *data_value;
union {
struct {
int (*ber_callback)(bool imp_tag, tvbuff_t *tvb, int offset, struct _asn1_ctx_t* ,proto_tree *tree, int hf_index );
} ber;
struct {
int (*type_cb)(tvbuff_t*, int, struct _asn1_ctx_t*, proto_tree*, int);
} per;
} u;
} embedded_pdv;
struct _rose_ctx_t *rose_ctx;
} asn1_ctx_t;
#define ROSE_CTX_SIGNATURE 0x524F5345 /* "ROSE" */
typedef struct _rose_ctx_t {
guint32 signature;
dissector_table_t arg_global_dissector_table;
dissector_table_t arg_local_dissector_table;
dissector_table_t res_global_dissector_table;
dissector_table_t res_local_dissector_table;
dissector_table_t err_global_dissector_table;
dissector_table_t err_local_dissector_table;
/* filling in description into tree, info column, any buffer */
int apdu_depth;
bool fillin_info;
gchar *fillin_ptr;
gsize fillin_buf_size;
struct { /* "dynamic" data */
gint pdu;
/*
1 : invoke,
2 : returnResult,
3 : returnError,
4 : reject
*/
gint code;
/*
-1 : none (optional in ReturnResult)
0 : local,
1 : global
*/
gint32 code_local;
const char *code_global;
proto_item *code_item;
} d;
void *private_data;
} rose_ctx_t;
WS_DLL_PUBLIC void asn1_ctx_init(asn1_ctx_t *actx, asn1_enc_e encoding, bool aligned, packet_info *pinfo);
extern bool asn1_ctx_check_signature(asn1_ctx_t *actx);
extern void asn1_ctx_clean_external(asn1_ctx_t *actx);
extern void asn1_ctx_clean_epdv(asn1_ctx_t *actx);
extern void asn1_stack_frame_push(asn1_ctx_t *actx, const gchar *name);
extern void asn1_stack_frame_pop(asn1_ctx_t *actx, const gchar *name);
extern void asn1_stack_frame_check(asn1_ctx_t *actx, const gchar *name, const asn1_par_def_t *par_def);
extern void asn1_param_push_boolean(asn1_ctx_t *actx, bool value);
extern void asn1_param_push_integer(asn1_ctx_t *actx, gint32 value);
extern bool asn1_param_get_boolean(asn1_ctx_t *actx, const gchar *name);
extern gint32 asn1_param_get_integer(asn1_ctx_t *actx, const gchar *name);
WS_DLL_PUBLIC void rose_ctx_init(rose_ctx_t *rctx);
extern bool rose_ctx_check_signature(rose_ctx_t *rctx);
WS_DLL_PUBLIC void rose_ctx_clean_data(rose_ctx_t *rctx);
WS_DLL_PUBLIC asn1_ctx_t *get_asn1_ctx(void *ptr);
WS_DLL_PUBLIC rose_ctx_t *get_rose_ctx(void *ptr);
extern double asn1_get_real(const guint8 *real_ptr, gint len);
/* flags */
#define ASN1_EXT_ROOT 0x01
#define ASN1_EXT_EXT 0x02
#define ASN1_OPT 0x04
#define ASN1_DFLT 0x08
#define ASN1_HAS_EXT(f) ((f)&(ASN1_EXT_ROOT|ASN1_EXT_EXT))
#endif /* __ASN1_H__ */
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