/usr/share/perl5/Config/Model/Backend/Dpkg/Control.pm is in libconfig-model-dpkg-perl 2.090.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 | package Config::Model::Backend::Dpkg::Control ;
use strict;
use warnings;
use 5.20.1;
use Mouse ;
use feature qw/postderef signatures/;
no warnings qw/experimental::postderef experimental::signatures/;
extends 'Config::Model::Backend::Any';
with 'Config::Model::Backend::DpkgSyntax';
with 'Config::Model::Backend::DpkgStoreRole';
use Carp;
use Config::Model::Exception ;
use File::Path;
use Log::Log4perl qw(get_logger :levels);
use Config::Model::Dpkg::Dependency;
my $logger = get_logger("Backend::Dpkg::Control") ;
sub suffix { return '' ; }
sub read {
my $self = shift ;
my %args = @_ ;
# args is:
# object => $obj, # Config::Model::Node object
# root => './my_test', # fake root directory, userd for tests
# config_dir => /etc/foo', # absolute path
# file => 'foo.conf', # file name
# file_path => './my_test/etc/foo/foo.conf'
# io_handle => $io # IO::File object
# check => yes|no|skip
return 0 unless defined $args{io_handle} ;
$logger->info("Parsing $args{file_path}");
# load dpkgctrl file
my $c = $self -> parse_dpkg_file ($args{file_path}, $args{io_handle}, $args{check}, 1 ) ;
# fix Debian #735000: ask for infos for all packages not in cache in one go.
$self->fill_package_cache ($c);
my $root = $args{object} ;
my $check = $args{check} ;
my $file;
$logger->debug("Reading control source info");
# first section is source package, following sections are binary package
my $node = $root->fetch_element(name => 'source', check => $check) ;
$self->read_sections ($node, shift @$c, shift @$c, $check);
$logger->debug("Reading binary package names");
# we assume that package name is the first item in the section data
while (@$c ) {
my ($section_line,$section) = splice @$c,0,2 ;
my $package_name;
foreach (my $i = 0; $i < $#$section; $i += 2) {
next unless $section->[$i] =~ /^package$/i;
$package_name = $section->[ $i+1 ][0][0];
splice @$section,$i,2 ;
last ;
}
if (not defined $package_name) {
my $msg = "Cannot find package_name in section beginning at line $section_line";
Config::Model::Exception::Syntax
-> throw (object => $root, error => $msg, parsed_line => $section_line) ;
}
$node = $root->grab("binary:$package_name") ;
$self->read_sections ($node, $section_line, $section, $args{check});
}
return 1 ;
}
sub fill_package_cache ($self, $c) {
# scan data to find package name and query madison for info for all packages in a single call
my %packages; # use a hash to eliminate duplicates
foreach my $s (@$c) {
next unless ref $s eq 'ARRAY' ;
my %section = @$s ; # don't care about order
foreach my $found (keys %section) {
if ($found =~ /Depends|Suggests|Recommends|Enhances|Breaks|Conflicts|Replaces/) {
# $section{found} array is [ [ dep, line_nb, altered_value , comment ], ..]
map { $packages{$_} = 1 }
grep { not /\$/ } # skip debhelper variables
map {
chomp;
s/\[.*\]//g; # remove arch details
s/<.*>//; # remove build profile
s/\(.*\)//; # remove version details
s/\s//g;
s/,\s*$//; # remove trailing comma
$_;
}
map { split /\s*[,|]\s*/ , $_->[0] } # extract dependency info from array ref
grep { ref $_ } # skip emtpy data
$section{$found}->@*;
}
}
}
my @pkgs = keys %packages;
Config::Model::Dpkg::Dependency::cache_info_from_madison ($self->node->instance,@pkgs);
}
sub read_sections {
my $self = shift ;
my $node = shift;
my $section_line = shift ;
my $section = shift;
my $check = shift || 'yes';
my %sections ;
for (my $i=0; $i < @$section ; $i += 2 ) {
my $key = $section->[$i];
my $lc_key = lc($key); # key are not key sensitive
$sections{$lc_key} = [ $key , $section->[$i+1] ];
}
foreach my $key ($node->get_element_name) {
my $ref = delete $sections{lc($key)} ;
next unless defined $ref ;
$self->store_section_element_in_tree ($node,$check, @$ref);
}
# leftover sections should be either accepted or rejected
foreach my $lc_key (keys %sections) {
my $ref = delete $sections{$lc_key} ;
$self->store_section_element_in_tree ($node,$check, @$ref);
}
}
#
# New subroutine "store_section_element_in_tree" extracted - Mon Jul 4 13:35:50 2011.
#
sub store_section_element_in_tree {
my $self = shift;
my $node = shift;
my $check = shift;
my $key = shift;
my $v_ref = shift;
$logger->info( "reading key '$key' from control file (for node "
. $node->location
. ")" );
# control parameters are case insensitive. Falling back on $key
# means $key is unknown. fetch_element will trigger a meaningful
# error message
my $found = $node->find_element( $key, case => 'any' ) || $key;
# v_ref is a list of ($value, $line_nb ,$note,@comment) = @$v_ref;
my $elt_obj = $node->fetch_element( name => $found, check => $check );
my $type = $node->element_type($found);
if ( $type eq 'list' ) {
$self->store_section_list_element ( $logger, $elt_obj, $check, $v_ref);
}
elsif ($found eq 'Description' and $elt_obj) {
my ($synopsis_ref, @desc_ref) = $v_ref->@*;
$self->store_section_leaf_element ( $logger, $node->fetch_element('Synopsis'), $check, [$synopsis_ref]);
$self->store_section_leaf_element ( $logger, $node->fetch_element('Description'), $check, \@desc_ref);
}
elsif ($elt_obj ) {
$self->store_section_leaf_element ( $logger, $elt_obj, $check, $v_ref);
}
else {
# try anyway to trigger an error message
my $unexpected_obj = $node->fetch_element($key);
$self->store_section_leaf_element ( $logger, $unexpected_obj, $check, $v_ref);
}
}
sub write {
my $self = shift ;
my %args = @_ ;
# args is:
# object => $obj, # Config::Model::Node object
# root => './my_test', # fake root directory, userd for tests
# config_dir => /etc/foo', # absolute path
# file => 'foo.conf', # file name
# file_path => './my_test/etc/foo/foo.conf'
# io_handle => $io # IO::File object
croak "Undefined file handle to write"
unless defined $args{io_handle} ;
my $node = $args{object} ;
my $ioh = $args{io_handle} ;
my @sections = [ $self-> package_spec($node->fetch_element('source')) ];
my $binary_hash = $node->fetch_element('binary') ;
foreach my $binary_name ( $binary_hash -> fetch_all_indexes ) {
my $ref = [ Package => $binary_name ,
$self->package_spec($binary_hash->fetch_with_id($binary_name)) ];
push @sections, $ref ;
}
$self->write_dpkg_file($ioh, \@sections,",\n" ) ;
return 1;
}
sub package_spec {
my ( $self, $node ) = @_ ;
my @section ;
my $description_ref ;
foreach my $elt ($node->get_element_name ) {
my $type = $node->element_type($elt) ;
my $elt_obj = $node->fetch_element($elt) ;
my $c = $elt_obj->annotation ;
push @section, map {'# '.$_} split /\n/,$c if $c ;
if ($type eq 'hash') {
die "package_spec: unexpected hash type in ".$node->name." element $elt\n" ;
}
elsif ($type eq 'list') {
my @v;
my @indexes = $elt_obj->fetch_all_indexes;
foreach my $idx (@indexes) {
my $value_obj = $elt_obj->fetch_with_id($idx);
my $value = $value_obj->fetch;
next unless defined $value;
my $note = $value_obj->annotation;
my $comment = $note ? join ("\n",map {'# '.$_} split /\n/,$note ) : undef;
push @v, $comment ? [ $value, $comment ] : $value;
}
push @section, $elt , \@v if @v;
}
elsif ($elt eq 'Synopsis') {
my $v = $node->fetch_element_value($elt) ;
push @section, 'Description' , $v ; # mandatory field
$description_ref = \$section[$#section] ;
}
elsif ($elt eq 'Description') {
$$description_ref .= "\n".$node->fetch_element_value($elt) ; # mandatory field
}
else {
my $v = $node->fetch_element_value($elt) ;
push @section, $elt , $v if $v ;
}
}
return @section ;
}
1;
__END__
=head1 NAME
Config::Model::Backend::Dpkg::Control - Read and write Debian Dpkg control information
=head1 SYNOPSIS
No synopsis. This class is dedicated to configuration class C<Dpkg::Control>
=head1 DESCRIPTION
This module is used directly by L<Config::Model> to read or write the
content of Debian C<control> file.
All C<control> files keyword are read in a case-insensitive manner.
=head1 CONSTRUCTOR
=head2 new ( node => $node_obj, name => 'Dpkg::Control' ) ;
Inherited from L<Config::Model::Backend::Any>. The constructor will be
called by L<Config::Model::AutoRead>.
=head2 read ( io_handle => ... )
Of all parameters passed to this read call-back, only C<io_handle> is
used. This parameter must be L<IO::File> object already opened for
read.
It can also be undef. In this case, C<read()> will return 0.
When a file is read, C<read()> will return 1.
=head2 write ( io_handle => ... )
Of all parameters passed to this write call-back, only C<io_handle> is
used. This parameter must be L<IO::File> object already opened for
write.
C<write()> will return 1.
=head1 AUTHOR
Dominique Dumont, (ddumont at cpan dot org)
=head1 SEE ALSO
L<Config::Model>,
L<Config::Model::AutoRead>,
L<Config::Model::Backend::Any>,
=cut
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