This file is indexed.

/usr/share/perl5/HTTP/Cookies.pm is in libhttp-cookies-perl 6.01-1.

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
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
package HTTP::Cookies;

use strict;
use HTTP::Date qw(str2time parse_date time2str);
use HTTP::Headers::Util qw(_split_header_words join_header_words);

use vars qw($VERSION $EPOCH_OFFSET);
$VERSION = "6.01";

# Legacy: because "use "HTTP::Cookies" used be the ONLY way
#  to load the class HTTP::Cookies::Netscape.
require HTTP::Cookies::Netscape;

$EPOCH_OFFSET = 0;  # difference from Unix epoch
if ($^O eq "MacOS") {
    require Time::Local;
    $EPOCH_OFFSET = Time::Local::timelocal(0,0,0,1,0,70);
}

# A HTTP::Cookies object is a hash.  The main attribute is the
# COOKIES 3 level hash:  $self->{COOKIES}{$domain}{$path}{$key}.

sub new
{
    my $class = shift;
    my $self = bless {
	COOKIES => {},
    }, $class;
    my %cnf = @_;
    for (keys %cnf) {
	$self->{lc($_)} = $cnf{$_};
    }
    $self->load;
    $self;
}


sub add_cookie_header
{
    my $self = shift;
    my $request = shift || return;
    my $url = $request->uri;
    my $scheme = $url->scheme;
    unless ($scheme =~ /^https?\z/) {
	return;
    }

    my $domain = _host($request, $url);
    $domain = "$domain.local" unless $domain =~ /\./;
    my $secure_request = ($scheme eq "https");
    my $req_path = _url_path($url);
    my $req_port = $url->port;
    my $now = time();
    _normalize_path($req_path) if $req_path =~ /%/;

    my @cval;    # cookie values for the "Cookie" header
    my $set_ver;
    my $netscape_only = 0; # An exact domain match applies to any cookie

    while ($domain =~ /\./) {
        # Checking $domain for cookies"
	my $cookies = $self->{COOKIES}{$domain};
	next unless $cookies;
	if ($self->{delayload} && defined($cookies->{'//+delayload'})) {
	    my $cookie_data = $cookies->{'//+delayload'}{'cookie'};
	    delete $self->{COOKIES}{$domain};
	    $self->load_cookie($cookie_data->[1]);
	    $cookies = $self->{COOKIES}{$domain};
	    next unless $cookies;  # should not really happen
	}

	# Want to add cookies corresponding to the most specific paths
	# first (i.e. longest path first)
	my $path;
	for $path (sort {length($b) <=> length($a) } keys %$cookies) {
	    if (index($req_path, $path) != 0) {
		next;
	    }

	    my($key,$array);
	    while (($key,$array) = each %{$cookies->{$path}}) {
		my($version,$val,$port,$path_spec,$secure,$expires) = @$array;
		if ($secure && !$secure_request) {
		    next;
		}
		if ($expires && $expires < $now) {
		    next;
		}
		if ($port) {
		    my $found;
		    if ($port =~ s/^_//) {
			# The corresponding Set-Cookie attribute was empty
			$found++ if $port eq $req_port;
			$port = "";
		    }
		    else {
			my $p;
			for $p (split(/,/, $port)) {
			    $found++, last if $p eq $req_port;
			}
		    }
		    unless ($found) {
			next;
		    }
		}
		if ($version > 0 && $netscape_only) {
		    next;
		}

		# set version number of cookie header.
	        # XXX: What should it be if multiple matching
                #      Set-Cookie headers have different versions themselves
		if (!$set_ver++) {
		    if ($version >= 1) {
			push(@cval, "\$Version=$version");
		    }
		    elsif (!$self->{hide_cookie2}) {
			$request->header(Cookie2 => '$Version="1"');
		    }
		}

		# do we need to quote the value
		if ($val =~ /\W/ && $version) {
		    $val =~ s/([\\\"])/\\$1/g;
		    $val = qq("$val");
		}

		# and finally remember this cookie
		push(@cval, "$key=$val");
		if ($version >= 1) {
		    push(@cval, qq(\$Path="$path"))     if $path_spec;
		    push(@cval, qq(\$Domain="$domain")) if $domain =~ /^\./;
		    if (defined $port) {
			my $p = '$Port';
			$p .= qq(="$port") if length $port;
			push(@cval, $p);
		    }
		}

	    }
        }

    } continue {
	# Try with a more general domain, alternately stripping
	# leading name components and leading dots.  When this
	# results in a domain with no leading dot, it is for
	# Netscape cookie compatibility only:
	#
	# a.b.c.net	Any cookie
	# .b.c.net	Any cookie
	# b.c.net	Netscape cookie only
	# .c.net	Any cookie

	if ($domain =~ s/^\.+//) {
	    $netscape_only = 1;
	}
	else {
	    $domain =~ s/[^.]*//;
	    $netscape_only = 0;
	}
    }

    if (@cval) {
	if (my $old = $request->header("Cookie")) {
	    unshift(@cval, $old);
	}
	$request->header(Cookie => join("; ", @cval));
    }

    $request;
}


sub extract_cookies
{
    my $self = shift;
    my $response = shift || return;

    my @set = _split_header_words($response->_header("Set-Cookie2"));
    my @ns_set = $response->_header("Set-Cookie");

    return $response unless @set || @ns_set;  # quick exit

    my $request = $response->request;
    my $url = $request->uri;
    my $req_host = _host($request, $url);
    $req_host = "$req_host.local" unless $req_host =~ /\./;
    my $req_port = $url->port;
    my $req_path = _url_path($url);
    _normalize_path($req_path) if $req_path =~ /%/;

    if (@ns_set) {
	# The old Netscape cookie format for Set-Cookie
	# http://curl.haxx.se/rfc/cookie_spec.html
	# can for instance contain an unquoted "," in the expires
	# field, so we have to use this ad-hoc parser.
	my $now = time();

	# Build a hash of cookies that was present in Set-Cookie2
	# headers.  We need to skip them if we also find them in a
	# Set-Cookie header.
	my %in_set2;
	for (@set) {
	    $in_set2{$_->[0]}++;
	}

	my $set;
	for $set (@ns_set) {
            $set =~ s/^\s+//;
	    my @cur;
	    my $param;
	    my $expires;
	    my $first_param = 1;
	    for $param (split(/;\s*/, $set)) {
                next unless length($param);
		my($k,$v) = split(/\s*=\s*/, $param, 2);
		if (defined $v) {
		    $v =~ s/\s+$//;
		    #print "$k => $v\n";
		}
		else {
		    $k =~ s/\s+$//;
		    #print "$k => undef";
		}
		if (!$first_param && lc($k) eq "expires") {
		    my $etime = str2time($v);
		    if (defined $etime) {
			push(@cur, "Max-Age" => $etime - $now);
			$expires++;
		    }
		    else {
			# parse_date can deal with years outside the range of time_t,
			my($year, $mon, $day, $hour, $min, $sec, $tz) = parse_date($v);
			if ($year) {
			    my $thisyear = (gmtime)[5] + 1900;
			    if ($year < $thisyear) {
				push(@cur, "Max-Age" => -1);  # any negative value will do
				$expires++;
			    }
			    elsif ($year >= $thisyear + 10) {
				# the date is at least 10 years into the future, just replace
				# it with something approximate
				push(@cur, "Max-Age" => 10 * 365 * 24 * 60 * 60);
				$expires++;
			    }
			}
		    }
		}
                elsif (!$first_param && lc($k) =~ /^(?:version|discard|ns-cookie)/) {
                    # ignore
                }
		else {
		    push(@cur, $k => $v);
		}
		$first_param = 0;
	    }
            next unless @cur;
	    next if $in_set2{$cur[0]};

#	    push(@cur, "Port" => $req_port);
	    push(@cur, "Discard" => undef) unless $expires;
	    push(@cur, "Version" => 0);
	    push(@cur, "ns-cookie" => 1);
	    push(@set, \@cur);
	}
    }

  SET_COOKIE:
    for my $set (@set) {
	next unless @$set >= 2;

	my $key = shift @$set;
	my $val = shift @$set;

	my %hash;
	while (@$set) {
	    my $k = shift @$set;
	    my $v = shift @$set;
	    my $lc = lc($k);
	    # don't loose case distinction for unknown fields
	    $k = $lc if $lc =~ /^(?:discard|domain|max-age|
                                    path|port|secure|version)$/x;
	    if ($k eq "discard" || $k eq "secure") {
		$v = 1 unless defined $v;
	    }
	    next if exists $hash{$k};  # only first value is significant
	    $hash{$k} = $v;
	};

	my %orig_hash = %hash;
	my $version   = delete $hash{version};
	$version = 1 unless defined($version);
	my $discard   = delete $hash{discard};
	my $secure    = delete $hash{secure};
	my $maxage    = delete $hash{'max-age'};
	my $ns_cookie = delete $hash{'ns-cookie'};

	# Check domain
	my $domain  = delete $hash{domain};
	$domain = lc($domain) if defined $domain;
	if (defined($domain)
	    && $domain ne $req_host && $domain ne ".$req_host") {
	    if ($domain !~ /\./ && $domain ne "local") {
		next SET_COOKIE;
	    }
	    $domain = ".$domain" unless $domain =~ /^\./;
	    if ($domain =~ /\.\d+$/) {
		next SET_COOKIE;
	    }
	    my $len = length($domain);
	    unless (substr($req_host, -$len) eq $domain) {
		next SET_COOKIE;
	    }
	    my $hostpre = substr($req_host, 0, length($req_host) - $len);
	    if ($hostpre =~ /\./ && !$ns_cookie) {
		next SET_COOKIE;
	    }
	}
	else {
	    $domain = $req_host;
	}

	my $path = delete $hash{path};
	my $path_spec;
	if (defined $path && $path ne '') {
	    $path_spec++;
	    _normalize_path($path) if $path =~ /%/;
	    if (!$ns_cookie &&
                substr($req_path, 0, length($path)) ne $path) {
		next SET_COOKIE;
	    }
	}
	else {
	    $path = $req_path;
	    $path =~ s,/[^/]*$,,;
	    $path = "/" unless length($path);
	}

	my $port;
	if (exists $hash{port}) {
	    $port = delete $hash{port};
	    if (defined $port) {
		$port =~ s/\s+//g;
		my $found;
		for my $p (split(/,/, $port)) {
		    unless ($p =~ /^\d+$/) {
			next SET_COOKIE;
		    }
		    $found++ if $p eq $req_port;
		}
		unless ($found) {
		    next SET_COOKIE;
		}
	    }
	    else {
		$port = "_$req_port";
	    }
	}
	$self->set_cookie($version,$key,$val,$path,$domain,$port,$path_spec,$secure,$maxage,$discard, \%hash)
	    if $self->set_cookie_ok(\%orig_hash);
    }

    $response;
}

sub set_cookie_ok
{
    1;
}


sub set_cookie
{
    my $self = shift;
    my($version,
       $key, $val, $path, $domain, $port,
       $path_spec, $secure, $maxage, $discard, $rest) = @_;

    # path and key can not be empty (key can't start with '$')
    return $self if !defined($path) || $path !~ m,^/, ||
	            !defined($key)  || $key  =~ m,^\$,;

    # ensure legal port
    if (defined $port) {
	return $self unless $port =~ /^_?\d+(?:,\d+)*$/;
    }

    my $expires;
    if (defined $maxage) {
	if ($maxage <= 0) {
	    delete $self->{COOKIES}{$domain}{$path}{$key};
	    return $self;
	}
	$expires = time() + $maxage;
    }
    $version = 0 unless defined $version;

    my @array = ($version, $val,$port,
		 $path_spec,
		 $secure, $expires, $discard);
    push(@array, {%$rest}) if defined($rest) && %$rest;
    # trim off undefined values at end
    pop(@array) while !defined $array[-1];

    $self->{COOKIES}{$domain}{$path}{$key} = \@array;
    $self;
}


sub save
{
    my $self = shift;
    my $file = shift || $self->{'file'} || return;
    local(*FILE);
    open(FILE, ">$file") or die "Can't open $file: $!";
    print FILE "#LWP-Cookies-1.0\n";
    print FILE $self->as_string(!$self->{ignore_discard});
    close(FILE);
    1;
}


sub load
{
    my $self = shift;
    my $file = shift || $self->{'file'} || return;
    local(*FILE, $_);
    local $/ = "\n";  # make sure we got standard record separator
    open(FILE, $file) or return;
    my $magic = <FILE>;
    unless ($magic =~ /^\#LWP-Cookies-(\d+\.\d+)/) {
	warn "$file does not seem to contain cookies";
	return;
    }
    while (<FILE>) {
	next unless s/^Set-Cookie3:\s*//;
	chomp;
	my $cookie;
	for $cookie (_split_header_words($_)) {
	    my($key,$val) = splice(@$cookie, 0, 2);
	    my %hash;
	    while (@$cookie) {
		my $k = shift @$cookie;
		my $v = shift @$cookie;
		$hash{$k} = $v;
	    }
	    my $version   = delete $hash{version};
	    my $path      = delete $hash{path};
	    my $domain    = delete $hash{domain};
	    my $port      = delete $hash{port};
	    my $expires   = str2time(delete $hash{expires});

	    my $path_spec = exists $hash{path_spec}; delete $hash{path_spec};
	    my $secure    = exists $hash{secure};    delete $hash{secure};
	    my $discard   = exists $hash{discard};   delete $hash{discard};

	    my @array =	($version,$val,$port,
			 $path_spec,$secure,$expires,$discard);
	    push(@array, \%hash) if %hash;
	    $self->{COOKIES}{$domain}{$path}{$key} = \@array;
	}
    }
    close(FILE);
    1;
}


sub revert
{
    my $self = shift;
    $self->clear->load;
    $self;
}


sub clear
{
    my $self = shift;
    if (@_ == 0) {
	$self->{COOKIES} = {};
    }
    elsif (@_ == 1) {
	delete $self->{COOKIES}{$_[0]};
    }
    elsif (@_ == 2) {
	delete $self->{COOKIES}{$_[0]}{$_[1]};
    }
    elsif (@_ == 3) {
	delete $self->{COOKIES}{$_[0]}{$_[1]}{$_[2]};
    }
    else {
	require Carp;
        Carp::carp('Usage: $c->clear([domain [,path [,key]]])');
    }
    $self;
}


sub clear_temporary_cookies
{
    my($self) = @_;

    $self->scan(sub {
        if($_[9] or        # "Discard" flag set
           not $_[8]) {    # No expire field?
            $_[8] = -1;            # Set the expire/max_age field
            $self->set_cookie(@_); # Clear the cookie
        }
      });
}


sub DESTROY
{
    my $self = shift;
    local($., $@, $!, $^E, $?);
    $self->save if $self->{'autosave'};
}


sub scan
{
    my($self, $cb) = @_;
    my($domain,$path,$key);
    for $domain (sort keys %{$self->{COOKIES}}) {
	for $path (sort keys %{$self->{COOKIES}{$domain}}) {
	    for $key (sort keys %{$self->{COOKIES}{$domain}{$path}}) {
		my($version,$val,$port,$path_spec,
		   $secure,$expires,$discard,$rest) =
		       @{$self->{COOKIES}{$domain}{$path}{$key}};
		$rest = {} unless defined($rest);
		&$cb($version,$key,$val,$path,$domain,$port,
		     $path_spec,$secure,$expires,$discard,$rest);
	    }
	}
    }
}


sub as_string
{
    my($self, $skip_discard) = @_;
    my @res;
    $self->scan(sub {
	my($version,$key,$val,$path,$domain,$port,
	   $path_spec,$secure,$expires,$discard,$rest) = @_;
	return if $discard && $skip_discard;
	my @h = ($key, $val);
	push(@h, "path", $path);
	push(@h, "domain" => $domain);
	push(@h, "port" => $port) if defined $port;
	push(@h, "path_spec" => undef) if $path_spec;
	push(@h, "secure" => undef) if $secure;
	push(@h, "expires" => HTTP::Date::time2isoz($expires)) if $expires;
	push(@h, "discard" => undef) if $discard;
	my $k;
	for $k (sort keys %$rest) {
	    push(@h, $k, $rest->{$k});
	}
	push(@h, "version" => $version);
	push(@res, "Set-Cookie3: " . join_header_words(\@h));
    });
    join("\n", @res, "");
}

sub _host
{
    my($request, $url) = @_;
    if (my $h = $request->header("Host")) {
	$h =~ s/:\d+$//;  # might have a port as well
	return lc($h);
    }
    return lc($url->host);
}

sub _url_path
{
    my $url = shift;
    my $path;
    if($url->can('epath')) {
       $path = $url->epath;    # URI::URL method
    }
    else {
       $path = $url->path;           # URI::_generic method
    }
    $path = "/" unless length $path;
    $path;
}

sub _normalize_path  # so that plain string compare can be used
{
    my $x;
    $_[0] =~ s/%([0-9a-fA-F][0-9a-fA-F])/
	         $x = uc($1);
                 $x eq "2F" || $x eq "25" ? "%$x" :
                                            pack("C", hex($x));
              /eg;
    $_[0] =~ s/([\0-\x20\x7f-\xff])/sprintf("%%%02X",ord($1))/eg;
}

1;

__END__

=head1 NAME

HTTP::Cookies - HTTP cookie jars

=head1 SYNOPSIS

  use HTTP::Cookies;
  $cookie_jar = HTTP::Cookies->new(
    file => "$ENV{'HOME'}/lwp_cookies.dat",
    autosave => 1,
  );

  use LWP;
  my $browser = LWP::UserAgent->new;
  $browser->cookie_jar($cookie_jar);

Or for an empty and temporary cookie jar:

  use LWP;
  my $browser = LWP::UserAgent->new;
  $browser->cookie_jar( {} );

=head1 DESCRIPTION

This class is for objects that represent a "cookie jar" -- that is, a
database of all the HTTP cookies that a given LWP::UserAgent object
knows about.

Cookies are a general mechanism which server side connections can use
to both store and retrieve information on the client side of the
connection.  For more information about cookies refer to
<URL:http://curl.haxx.se/rfc/cookie_spec.html> and
<URL:http://www.cookiecentral.com/>.  This module also implements the
new style cookies described in I<RFC 2965>.
The two variants of cookies are supposed to be able to coexist happily.

Instances of the class I<HTTP::Cookies> are able to store a collection
of Set-Cookie2: and Set-Cookie: headers and are able to use this
information to initialize Cookie-headers in I<HTTP::Request> objects.
The state of a I<HTTP::Cookies> object can be saved in and restored from
files.

=head1 METHODS

The following methods are provided:

=over 4

=item $cookie_jar = HTTP::Cookies->new

The constructor takes hash style parameters.  The following
parameters are recognized:

  file:            name of the file to restore cookies from and save cookies to
  autosave:        save during destruction (bool)
  ignore_discard:  save even cookies that are requested to be discarded (bool)
  hide_cookie2:    do not add Cookie2 header to requests

Future parameters might include (not yet implemented):

  max_cookies               300
  max_cookies_per_domain    20
  max_cookie_size           4096

  no_cookies   list of domain names that we never return cookies to

=item $cookie_jar->add_cookie_header( $request )

The add_cookie_header() method will set the appropriate Cookie:-header
for the I<HTTP::Request> object given as argument.  The $request must
have a valid url attribute before this method is called.

=item $cookie_jar->extract_cookies( $response )

The extract_cookies() method will look for Set-Cookie: and
Set-Cookie2: headers in the I<HTTP::Response> object passed as
argument.  Any of these headers that are found are used to update
the state of the $cookie_jar.

=item $cookie_jar->set_cookie( $version, $key, $val, $path, $domain, $port, $path_spec, $secure, $maxage, $discard, \%rest )

The set_cookie() method updates the state of the $cookie_jar.  The
$key, $val, $domain, $port and $path arguments are strings.  The
$path_spec, $secure, $discard arguments are boolean values. The $maxage
value is a number indicating number of seconds that this cookie will
live.  A value <= 0 will delete this cookie.  %rest defines
various other attributes like "Comment" and "CommentURL".

=item $cookie_jar->save

=item $cookie_jar->save( $file )

This method file saves the state of the $cookie_jar to a file.
The state can then be restored later using the load() method.  If a
filename is not specified we will use the name specified during
construction.  If the attribute I<ignore_discard> is set, then we
will even save cookies that are marked to be discarded.

The default is to save a sequence of "Set-Cookie3" lines.
"Set-Cookie3" is a proprietary LWP format, not known to be compatible
with any browser.  The I<HTTP::Cookies::Netscape> sub-class can
be used to save in a format compatible with Netscape.

=item $cookie_jar->load

=item $cookie_jar->load( $file )

This method reads the cookies from the file and adds them to the
$cookie_jar.  The file must be in the format written by the save()
method.

=item $cookie_jar->revert

This method empties the $cookie_jar and re-loads the $cookie_jar
from the last save file.

=item $cookie_jar->clear

=item $cookie_jar->clear( $domain )

=item $cookie_jar->clear( $domain, $path )

=item $cookie_jar->clear( $domain, $path, $key )

Invoking this method without arguments will empty the whole
$cookie_jar.  If given a single argument only cookies belonging to
that domain will be removed.  If given two arguments, cookies
belonging to the specified path within that domain are removed.  If
given three arguments, then the cookie with the specified key, path
and domain is removed.

=item $cookie_jar->clear_temporary_cookies

Discard all temporary cookies. Scans for all cookies in the jar
with either no expire field or a true C<discard> flag. To be
called when the user agent shuts down according to RFC 2965.

=item $cookie_jar->scan( \&callback )

The argument is a subroutine that will be invoked for each cookie
stored in the $cookie_jar.  The subroutine will be invoked with
the following arguments:

  0  version
  1  key
  2  val
  3  path
  4  domain
  5  port
  6  path_spec
  7  secure
  8  expires
  9  discard
 10  hash

=item $cookie_jar->as_string

=item $cookie_jar->as_string( $skip_discardables )

The as_string() method will return the state of the $cookie_jar
represented as a sequence of "Set-Cookie3" header lines separated by
"\n".  If $skip_discardables is TRUE, it will not return lines for
cookies with the I<Discard> attribute.

=back

=head1 SEE ALSO

L<HTTP::Cookies::Netscape>, L<HTTP::Cookies::Microsoft>

=head1 COPYRIGHT

Copyright 1997-2002 Gisle Aas

This library is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.