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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
###################################################
# parse an ethereal conformance file
# Copyright jelmer@samba.org 2005
# released under the GNU GPL
package Parse::Pidl::Ethereal::Conformance;
require Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(ReadConformance);
use strict;
use Parse::Pidl::Util qw(has_property);
sub handle_type($$$$$$$$$$)
{
my ($pos,$data,$name,$dissectorname,$ft_type,$base_type,$mask,$valsstring,$alignment) = @_;
unless(defined($alignment)) {
print "$pos: error incomplete TYPE command\n";
return;
}
unless ($dissectorname =~ /.*dissect_.*/) {
print "$pos: warning: dissector name does not contain `dissect'\n";
}
unless(valid_ft_type($ft_type)) {
print "$pos: warning: invalid FT_TYPE `$ft_type'\n";
}
unless(alid_base_type($base_type)) {
print "$pos: warning: invalid BASE_TYPE `$base_type'\n";
}
$data->{types}->{$name} = {
NAME => $name,
POS => $pos,
USED => 0,
DISSECTOR_NAME => $dissectorname,
FT_TYPE => $ft_type,
BASE_TYPE => $base_type,
MASK => $mask,
VALSSTRING => $valsstring,
ALIGNMENT => $alignment
};
}
sub handle_hf_rename($$$$)
{
my ($pos,$data,$old,$new) = @_;
unless(defined($new)) {
print "$pos: error incomplete HF_RENAME command\n";
return;
}
$data->{hf_renames}->{$old} = $new;
}
sub handle_param_value($$$$)
{
my ($pos,$data,$dissector_name,$value) = @_;
unless(defined($value)) {
print "$pos: error: incomplete PARAM_VALUE command\n";
return;
}
$data->{dissectorparams}->{$dissector_name} = $value;
}
sub valid_base_type($)
{
my $t = shift;
return 0 unless($t =~ /^BASE_.*/);
return 1;
}
sub valid_ft_type($)
{
my $t = shift;
return 0 unless($t =~ /^FT_.*/);
return 1;
}
sub handle_hf_field($$$$$$$$$$)
{
my ($pos,$data,$index,$name,$filter,$ft_type,$base_type,$valsstring,$mask,$blurb) = @_;
unless(defined($blurb)) {
print "$pos: error: incomplete HF_FIELD command\n";
return;
}
unless(valid_ft_type($ft_type)) {
print "$pos: warning: invalid FT_TYPE `$ft_type'\n";
}
unless(valid_base_type($base_type)) {
print "$pos: warning: invalid BASE_TYPE `$base_type'\n";
}
$data->{header_fields}->{$index} = {
INDEX => $index,
POS => $pos,
USED => 0,
NAME => $name,
FILTER => $filter,
FT_TYPE => $ft_type,
BASE_TYPE => $base_type,
VALSSTRING => $valsstring,
MASK => $mask,
BLURB => $blurb
};
}
sub handle_strip_prefix($$$)
{
my ($pos,$data,$x) = @_;
push (@{$data->{strip_prefixes}}, $x);
}
sub handle_noemit($$$)
{
my ($pos,$data) = @_;
my $type;
$type = shift if ($#_ == 1);
if (defined($type)) {
$data->{noemit}->{$type} = 1;
} else {
$data->{noemit_dissector} = 1;
}
}
sub handle_protocol($$$$$$)
{
my ($pos, $data, $name, $longname, $shortname, $filtername) = @_;
$data->{protocols}->{$name} = {
LONGNAME => $longname,
SHORTNAME => $shortname,
FILTERNAME => $filtername
};
}
sub handle_fielddescription($$$$)
{
my ($pos,$data,$field,$desc) = @_;
$data->{fielddescription}->{$field} = $desc;
}
sub handle_import
{
my $pos = shift @_;
my $data = shift @_;
my $dissectorname = shift @_;
unless(defined($dissectorname)) {
print "$pos: error: no dissectorname specified\n";
return;
}
$data->{imports}->{$dissectorname} = join(' ', @_);
}
my %field_handlers = (
TYPE => \&handle_type,
NOEMIT => \&handle_noemit,
PARAM_VALUE => \&handle_param_value,
HF_FIELD => \&handle_hf_field,
HF_RENAME => \&handle_hf_rename,
STRIP_PREFIX => \&handle_strip_prefix,
PROTOCOL => \&handle_protocol,
FIELD_DESCRIPTION => \&handle_fielddescription,
IMPORT => \&handle_import
);
sub ReadConformance($$)
{
my ($f,$data) = @_;
$data->{override} = "";
my $incodeblock = 0;
open(IN,"<$f") or return undef;
my $ln = 0;
foreach (<IN>) {
$ln++;
next if (/^#.*$/);
next if (/^$/);
s/[\r\n]//g;
if ($_ eq "CODE START") {
$incodeblock = 1;
next;
} elsif ($incodeblock and $_ eq "CODE END") {
$incodeblock = 0;
next;
} elsif ($incodeblock) {
$data->{override}.="$_\n";
next;
}
my @fields = /([^ "]+|"[^"]+")/g;
my $cmd = $fields[0];
shift @fields;
if (not defined($field_handlers{$cmd})) {
print "$f:$ln: Warning: Unknown command `$cmd'\n";
next;
}
$field_handlers{$cmd}("$f:$ln", $data, @fields);
}
close(IN);
}
1;
|
