1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/* packet-ber.h
* Helpers for ASN.1/BER dissection
* Ronnie Sahlberg (C) 2004
*
* $Id: packet-ber.h,v 1.1 2004/02/20 10:04:10 sahlberg Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* 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.
*/
typedef int (*ber_callback)(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset);
#define BER_CLASS_UNI 0x00
#define BER_CLASS_APP 0x01
#define BER_CLASS_CON 0x02
#define BER_CLASS_PRI 0x03
#define BER_UNI_TAG_BOOLEAN 0x01
#define BER_UNI_TAG_INTEGER 0x02
#define BER_UNI_TAG_BITSTRING 0x03
#define BER_UNI_TAG_OCTETSTRING 0x04
#define BER_UNI_TAG_SEQUENCE 0x10
#define BER_UNI_TAG_GENTIME 0x18
#define BER_UNI_TAG_GENSTR 0x1b
/* this function dissects the identifier octer of the BER TLV.
* We only handle TAGs (and LENGTHs) that fit inside 32 bit integers.
*/
int dissect_ber_identifier(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, guint8 *class, gboolean *pc, guint32 *tag);
/* this function dissects the identifier octer of the BER TLV.
* We only handle (TAGs and) LENGTHs that fit inside 32 bit integers.
*/
int dissect_ber_length(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, guint32 *length);
/* func is NULL normally but
* if the octet string contains an ber encode struct we provide func as the
* dissector for that struct
*/
int dissect_ber_octet_string(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_id, ber_callback func);
int dissect_ber_integer(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_id, guint32 *value);
int dissect_ber_boolean(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_id);
#define BER_FLAGS_OPTIONAL 0x00000001
typedef struct _ber_sequence {
guint8 class;
guint32 tag;
guint32 flags;
ber_callback func;
} ber_sequence;
/* this function dissects a BER sequence
*/
int dissect_ber_sequence(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset, ber_sequence *seq, gint hf_id, gint ett_id);
typedef struct _ber_choice {
guint8 class;
guint32 tag;
ber_callback func;
} ber_choice;
/* this function dissects a BER choice
*/
int dissect_ber_choice(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset, const ber_choice *ch, gint hf_id, gint ett_id);
/* this function dissects a BER GeneralString
*/
int dissect_ber_GeneralString(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_id, char *name_string, int name_len);
/* this function dissects a BER sequence of
*/
int dissect_ber_sequence_of(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset, ber_callback func, gint hf_id, gint ett_id);
int dissect_ber_generalized_time(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_id);
/* this function dissects a BER BIT-STRING
*/
int dissect_ber_bitstring(packet_info *pinfo, proto_tree *parent_tree, tvbuff_t *tvb, int offset, gint hf_id, gint ett_id, unsigned char *bitstring, int bitstring_len, proto_item **it, proto_tree **tr);
extern proto_item *ber_last_created_item;
|
