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|
###################################################
# parse an ethereal conformance file
# Copyright jelmer@samba.org 2005
# released under the GNU GPL
package Parse::Pidl::Ethereal::Conformance;
require Exporter;
use vars qw($VERSION);
$VERSION = '0.01';
@ISA = qw(Exporter);
@EXPORT_OK = qw(ReadConformance);
use strict;
use Parse::Pidl::Util qw(has_property);
sub handle_type($$$$$$$$$$)
{
my ($pos,$data,$name,$dissectorname,$ft_type,$base_type,$mask,$valsstring,$alignment) = @_;
unless(defined($alignment)) {
print "$pos: error incomplete TYPE command\n";
return;
}
unless ($dissectorname =~ /.*dissect_.*/) {
print "$pos: warning: dissector name does not contain `dissect'\n";
}
unless(valid_ft_type($ft_type)) {
print "$pos: warning: invalid FT_TYPE `$ft_type'\n";
}
unless (valid_base_type($base_type)) {
print "$pos: warning: invalid BASE_TYPE `$base_type'\n";
}
$data->{types}->{$name} = {
NAME => $name,
POS => $pos,
USED => 0,
DISSECTOR_NAME => $dissectorname,
FT_TYPE => $ft_type,
BASE_TYPE => $base_type,
MASK => $mask,
VALSSTRING => $valsstring,
ALIGNMENT => $alignment
};
}
sub handle_hf_rename($$$$)
{
my ($pos,$data,$old,$new) = @_;
unless(defined($new)) {
print "$pos: error incomplete HF_RENAME command\n";
return;
}
$data->{hf_renames}->{$old} = {
OLDNAME => $old,
NEWNAME => $new,
POS => $pos,
USED => 0
};
}
sub handle_param_value($$$$)
{
my ($pos,$data,$dissector_name,$value) = @_;
unless(defined($value)) {
print "$pos: error: incomplete PARAM_VALUE command\n";
return;
}
$data->{dissectorparams}->{$dissector_name} = {
DISSECTOR => $dissector_name,
PARAM => $value,
POS => $pos,
USED => 0
};
}
sub valid_base_type($)
{
my $t = shift;
return 0 unless($t =~ /^BASE_.*/);
return 1;
}
sub valid_ft_type($)
{
my $t = shift;
return 0 unless($t =~ /^FT_.*/);
return 1;
}
sub handle_hf_field($$$$$$$$$$)
{
my ($pos,$data,$index,$name,$filter,$ft_type,$base_type,$valsstring,$mask,$blurb) = @_;
unless(defined($blurb)) {
print "$pos: error: incomplete HF_FIELD command\n";
return;
}
unless(valid_ft_type($ft_type)) {
print "$pos: warning: invalid FT_TYPE `$ft_type'\n";
}
unless(valid_base_type($base_type)) {
print "$pos: warning: invalid BASE_TYPE `$base_type'\n";
}
$data->{header_fields}->{$index} = {
INDEX => $index,
POS => $pos,
USED => 0,
NAME => $name,
FILTER => $filter,
FT_TYPE => $ft_type,
BASE_TYPE => $base_type,
VALSSTRING => $valsstring,
MASK => $mask,
BLURB => $blurb
};
}
sub handle_strip_prefix($$$)
{
my ($pos,$data,$x) = @_;
push (@{$data->{strip_prefixes}}, $x);
}
sub handle_noemit($$$)
{
my ($pos,$data) = @_;
my $type;
$type = shift if ($#_ == 1);
if (defined($type)) {
$data->{noemit}->{$type} = 1;
} else {
$data->{noemit_dissector} = 1;
}
}
sub handle_protocol($$$$$$)
{
my ($pos, $data, $name, $longname, $shortname, $filtername) = @_;
$data->{protocols}->{$name} = {
LONGNAME => $longname,
SHORTNAME => $shortname,
FILTERNAME => $filtername
};
}
sub handle_fielddescription($$$$)
{
my ($pos,$data,$field,$desc) = @_;
$data->{fielddescription}->{$field} = {
DESCRIPTION => $desc,
POS => $pos,
USED => 0
};
}
sub handle_import
{
my $pos = shift @_;
my $data = shift @_;
my $dissectorname = shift @_;
unless(defined($dissectorname)) {
print "$pos: error: no dissectorname specified\n";
return;
}
$data->{imports}->{$dissectorname} = {
NAME => $dissectorname,
DATA => join(' ', @_),
USED => 0,
POS => $pos
};
}
my %field_handlers = (
TYPE => \&handle_type,
NOEMIT => \&handle_noemit,
PARAM_VALUE => \&handle_param_value,
HF_FIELD => \&handle_hf_field,
HF_RENAME => \&handle_hf_rename,
STRIP_PREFIX => \&handle_strip_prefix,
PROTOCOL => \&handle_protocol,
FIELD_DESCRIPTION => \&handle_fielddescription,
IMPORT => \&handle_import
);
sub ReadConformance($$)
{
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;
|
