diff options
Diffstat (limited to 'Master/tlpkg/tlperl.straw/lib/CGI/Cookie.pm')
| -rwxr-xr-x | Master/tlpkg/tlperl.straw/lib/CGI/Cookie.pm | 546 |
1 files changed, 546 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl.straw/lib/CGI/Cookie.pm b/Master/tlpkg/tlperl.straw/lib/CGI/Cookie.pm new file mode 100755 index 00000000000..85a07f0bc05 --- /dev/null +++ b/Master/tlpkg/tlperl.straw/lib/CGI/Cookie.pm @@ -0,0 +1,546 @@ +package CGI::Cookie; + +# See the bottom of this file for the POD documentation. Search for the +# string '=head'. + +# You can run this file through either pod2man or pod2html to produce pretty +# documentation in manual or html file format (these utilities are part of the +# Perl 5 distribution). + +# Copyright 1995-1999, Lincoln D. Stein. All rights reserved. +# It may be used and modified freely, but I do request that this copyright +# notice remain attached to the file. You may modify this module as you +# wish, but if you redistribute a modified version, please attach a note +# listing the modifications you have made. + +$CGI::Cookie::VERSION='1.29'; + +use CGI::Util qw(rearrange unescape escape); +use CGI; +use overload '""' => \&as_string, + 'cmp' => \&compare, + 'fallback'=>1; + +my $PERLEX = 0; +# Turn on special checking for ActiveState's PerlEx +$PERLEX++ if defined($ENV{'GATEWAY_INTERFACE'}) && $ENV{'GATEWAY_INTERFACE'} =~ /^CGI-PerlEx/; + +# Turn on special checking for Doug MacEachern's modperl +# PerlEx::DBI tries to fool DBI by setting MOD_PERL +my $MOD_PERL = 0; +if (exists $ENV{MOD_PERL} && ! $PERLEX) { + if (exists $ENV{MOD_PERL_API_VERSION} && $ENV{MOD_PERL_API_VERSION} == 2) { + $MOD_PERL = 2; + require Apache2::RequestUtil; + require APR::Table; + } else { + $MOD_PERL = 1; + require Apache; + } +} + +# fetch a list of cookies from the environment and +# return as a hash. the cookies are parsed as normal +# escaped URL data. +sub fetch { + my $class = shift; + my $raw_cookie = get_raw_cookie(@_) or return; + return $class->parse($raw_cookie); +} + +# Fetch a list of cookies from the environment or the incoming headers and +# return as a hash. The cookie values are not unescaped or altered in any way. + sub raw_fetch { + my $class = shift; + my $raw_cookie = get_raw_cookie(@_) or return; + my %results; + my($key,$value); + + my @pairs = split("[;,] ?",$raw_cookie); + foreach (@pairs) { + s/\s*(.*?)\s*/$1/; + if (/^([^=]+)=(.*)/) { + $key = $1; + $value = $2; + } + else { + $key = $_; + $value = ''; + } + $results{$key} = $value; + } + return \%results unless wantarray; + return %results; +} + +sub get_raw_cookie { + my $r = shift; + $r ||= eval { $MOD_PERL == 2 ? + Apache2::RequestUtil->request() : + Apache->request } if $MOD_PERL; + if ($r) { + $raw_cookie = $r->headers_in->{'Cookie'}; + } else { + if ($MOD_PERL && !exists $ENV{REQUEST_METHOD}) { + die "Run $r->subprocess_env; before calling fetch()"; + } + $raw_cookie = $ENV{HTTP_COOKIE} || $ENV{COOKIE}; + } +} + + +sub parse { + my ($self,$raw_cookie) = @_; + my %results; + + my @pairs = split("[;,] ?",$raw_cookie); + foreach (@pairs) { + s/\s*(.*?)\s*/$1/; + my($key,$value) = split("=",$_,2); + + # Some foreign cookies are not in name=value format, so ignore + # them. + next if !defined($value); + my @values = (); + if ($value ne '') { + @values = map unescape($_),split(/[&;]/,$value.'&dmy'); + pop @values; + } + $key = unescape($key); + # A bug in Netscape can cause several cookies with same name to + # appear. The FIRST one in HTTP_COOKIE is the most recent version. + $results{$key} ||= $self->new(-name=>$key,-value=>\@values); + } + return \%results unless wantarray; + return %results; +} + +sub new { + my $class = shift; + $class = ref($class) if ref($class); + # Ignore mod_perl request object--compatability with Apache::Cookie. + shift if ref $_[0] + && eval { $_[0]->isa('Apache::Request::Req') || $_[0]->isa('Apache') }; + my($name,$value,$path,$domain,$secure,$expires,$httponly) = + rearrange([NAME,[VALUE,VALUES],PATH,DOMAIN,SECURE,EXPIRES,HTTPONLY],@_); + + # Pull out our parameters. + my @values; + if (ref($value)) { + if (ref($value) eq 'ARRAY') { + @values = @$value; + } elsif (ref($value) eq 'HASH') { + @values = %$value; + } + } else { + @values = ($value); + } + + bless my $self = { + 'name'=>$name, + 'value'=>[@values], + },$class; + + # IE requires the path and domain to be present for some reason. + $path ||= "/"; + # however, this breaks networks which use host tables without fully qualified + # names, so we comment it out. + # $domain = CGI::virtual_host() unless defined $domain; + + $self->path($path) if defined $path; + $self->domain($domain) if defined $domain; + $self->secure($secure) if defined $secure; + $self->expires($expires) if defined $expires; + $self->httponly($httponly) if defined $httponly; +# $self->max_age($expires) if defined $expires; + return $self; +} + +sub as_string { + my $self = shift; + return "" unless $self->name; + + my(@constant_values,$domain,$path,$expires,$max_age,$secure,$httponly); + + push(@constant_values,"domain=$domain") if $domain = $self->domain; + push(@constant_values,"path=$path") if $path = $self->path; + push(@constant_values,"expires=$expires") if $expires = $self->expires; + push(@constant_values,"max-age=$max_age") if $max_age = $self->max_age; + push(@constant_values,"secure") if $secure = $self->secure; + push(@constant_values,"HttpOnly") if $httponly = $self->httponly; + + my($key) = escape($self->name); + my($cookie) = join("=",(defined $key ? $key : ''),join("&",map escape(defined $_ ? $_ : ''),$self->value)); + return join("; ",$cookie,@constant_values); +} + +sub compare { + my $self = shift; + my $value = shift; + return "$self" cmp $value; +} + +sub bake { + my ($self, $r) = @_; + + $r ||= eval { + $MOD_PERL == 2 + ? Apache2::RequestUtil->request() + : Apache->request + } if $MOD_PERL; + if ($r) { + $r->headers_out->add('Set-Cookie' => $self->as_string); + } else { + print CGI::header(-cookie => $self); + } + +} + +# accessors +sub name { + my $self = shift; + my $name = shift; + $self->{'name'} = $name if defined $name; + return $self->{'name'}; +} + +sub value { + my $self = shift; + my $value = shift; + if (defined $value) { + my @values; + if (ref($value)) { + if (ref($value) eq 'ARRAY') { + @values = @$value; + } elsif (ref($value) eq 'HASH') { + @values = %$value; + } + } else { + @values = ($value); + } + $self->{'value'} = [@values]; + } + return wantarray ? @{$self->{'value'}} : $self->{'value'}->[0] +} + +sub domain { + my $self = shift; + my $domain = shift; + $self->{'domain'} = lc $domain if defined $domain; + return $self->{'domain'}; +} + +sub secure { + my $self = shift; + my $secure = shift; + $self->{'secure'} = $secure if defined $secure; + return $self->{'secure'}; +} + +sub expires { + my $self = shift; + my $expires = shift; + $self->{'expires'} = CGI::Util::expires($expires,'cookie') if defined $expires; + return $self->{'expires'}; +} + +sub max_age { + my $self = shift; + my $expires = shift; + $self->{'max-age'} = CGI::Util::expire_calc($expires)-time() if defined $expires; + return $self->{'max-age'}; +} + +sub path { + my $self = shift; + my $path = shift; + $self->{'path'} = $path if defined $path; + return $self->{'path'}; +} + + +sub httponly { # HttpOnly + my $self = shift; + my $httponly = shift; + $self->{'httponly'} = $httponly if defined $httponly; + return $self->{'httponly'}; +} + +1; + +=head1 NAME + +CGI::Cookie - Interface to Netscape Cookies + +=head1 SYNOPSIS + + use CGI qw/:standard/; + use CGI::Cookie; + + # Create new cookies and send them + $cookie1 = new CGI::Cookie(-name=>'ID',-value=>123456); + $cookie2 = new CGI::Cookie(-name=>'preferences', + -value=>{ font => Helvetica, + size => 12 } + ); + print header(-cookie=>[$cookie1,$cookie2]); + + # fetch existing cookies + %cookies = fetch CGI::Cookie; + $id = $cookies{'ID'}->value; + + # create cookies returned from an external source + %cookies = parse CGI::Cookie($ENV{COOKIE}); + +=head1 DESCRIPTION + +CGI::Cookie is an interface to Netscape (HTTP/1.1) cookies, an +innovation that allows Web servers to store persistent information on +the browser's side of the connection. Although CGI::Cookie is +intended to be used in conjunction with CGI.pm (and is in fact used by +it internally), you can use this module independently. + +For full information on cookies see + + http://www.ics.uci.edu/pub/ietf/http/rfc2109.txt + +=head1 USING CGI::Cookie + +CGI::Cookie is object oriented. Each cookie object has a name and a +value. The name is any scalar value. The value is any scalar or +array value (associative arrays are also allowed). Cookies also have +several optional attributes, including: + +=over 4 + +=item B<1. expiration date> + +The expiration date tells the browser how long to hang on to the +cookie. If the cookie specifies an expiration date in the future, the +browser will store the cookie information in a disk file and return it +to the server every time the user reconnects (until the expiration +date is reached). If the cookie species an expiration date in the +past, the browser will remove the cookie from the disk file. If the +expiration date is not specified, the cookie will persist only until +the user quits the browser. + +=item B<2. domain> + +This is a partial or complete domain name for which the cookie is +valid. The browser will return the cookie to any host that matches +the partial domain name. For example, if you specify a domain name +of ".capricorn.com", then Netscape will return the cookie to +Web servers running on any of the machines "www.capricorn.com", +"ftp.capricorn.com", "feckless.capricorn.com", etc. Domain names +must contain at least two periods to prevent attempts to match +on top level domains like ".edu". If no domain is specified, then +the browser will only return the cookie to servers on the host the +cookie originated from. + +=item B<3. path> + +If you provide a cookie path attribute, the browser will check it +against your script's URL before returning the cookie. For example, +if you specify the path "/cgi-bin", then the cookie will be returned +to each of the scripts "/cgi-bin/tally.pl", "/cgi-bin/order.pl", and +"/cgi-bin/customer_service/complain.pl", but not to the script +"/cgi-private/site_admin.pl". By default, the path is set to "/", so +that all scripts at your site will receive the cookie. + +=item B<4. secure flag> + +If the "secure" attribute is set, the cookie will only be sent to your +script if the CGI request is occurring on a secure channel, such as SSL. + +=item B<4. httponly flag> + +If the "httponly" attribute is set, the cookie will only be accessible +through HTTP Requests. This cookie will be inaccessible via JavaScript +(to prevent XSS attacks). + +But, currently this feature only used and recognised by +MS Internet Explorer 6 Service Pack 1 and later. + +See this URL for more information: + +L<http://msdn.microsoft.com/en-us/library/ms533046%28VS.85%29.aspx> + +=back + +=head2 Creating New Cookies + + my $c = new CGI::Cookie(-name => 'foo', + -value => 'bar', + -expires => '+3M', + -domain => '.capricorn.com', + -path => '/cgi-bin/database', + -secure => 1 + ); + +Create cookies from scratch with the B<new> method. The B<-name> and +B<-value> parameters are required. The name must be a scalar value. +The value can be a scalar, an array reference, or a hash reference. +(At some point in the future cookies will support one of the Perl +object serialization protocols for full generality). + +B<-expires> accepts any of the relative or absolute date formats +recognized by CGI.pm, for example "+3M" for three months in the +future. See CGI.pm's documentation for details. + +B<-domain> points to a domain name or to a fully qualified host name. +If not specified, the cookie will be returned only to the Web server +that created it. + +B<-path> points to a partial URL on the current server. The cookie +will be returned to all URLs beginning with the specified path. If +not specified, it defaults to '/', which returns the cookie to all +pages at your site. + +B<-secure> if set to a true value instructs the browser to return the +cookie only when a cryptographic protocol is in use. + +B<-httponly> if set to a true value, the cookie will not be accessible +via JavaScript. + +For compatibility with Apache::Cookie, you may optionally pass in +a mod_perl request object as the first argument to C<new()>. It will +simply be ignored: + + my $c = new CGI::Cookie($r, + -name => 'foo', + -value => ['bar','baz']); + +=head2 Sending the Cookie to the Browser + +The simplest way to send a cookie to the browser is by calling the bake() +method: + + $c->bake; + +Under mod_perl, pass in an Apache request object: + + $c->bake($r); + +If you want to set the cookie yourself, Within a CGI script you can send +a cookie to the browser by creating one or more Set-Cookie: fields in the +HTTP header. Here is a typical sequence: + + my $c = new CGI::Cookie(-name => 'foo', + -value => ['bar','baz'], + -expires => '+3M'); + + print "Set-Cookie: $c\n"; + print "Content-Type: text/html\n\n"; + +To send more than one cookie, create several Set-Cookie: fields. + +If you are using CGI.pm, you send cookies by providing a -cookie +argument to the header() method: + + print header(-cookie=>$c); + +Mod_perl users can set cookies using the request object's header_out() +method: + + $r->headers_out->set('Set-Cookie' => $c); + +Internally, Cookie overloads the "" operator to call its as_string() +method when incorporated into the HTTP header. as_string() turns the +Cookie's internal representation into an RFC-compliant text +representation. You may call as_string() yourself if you prefer: + + print "Set-Cookie: ",$c->as_string,"\n"; + +=head2 Recovering Previous Cookies + + %cookies = fetch CGI::Cookie; + +B<fetch> returns an associative array consisting of all cookies +returned by the browser. The keys of the array are the cookie names. You +can iterate through the cookies this way: + + %cookies = fetch CGI::Cookie; + foreach (keys %cookies) { + do_something($cookies{$_}); + } + +In a scalar context, fetch() returns a hash reference, which may be more +efficient if you are manipulating multiple cookies. + +CGI.pm uses the URL escaping methods to save and restore reserved characters +in its cookies. If you are trying to retrieve a cookie set by a foreign server, +this escaping method may trip you up. Use raw_fetch() instead, which has the +same semantics as fetch(), but performs no unescaping. + +You may also retrieve cookies that were stored in some external +form using the parse() class method: + + $COOKIES = `cat /usr/tmp/Cookie_stash`; + %cookies = parse CGI::Cookie($COOKIES); + +If you are in a mod_perl environment, you can save some overhead by +passing the request object to fetch() like this: + + CGI::Cookie->fetch($r); + +=head2 Manipulating Cookies + +Cookie objects have a series of accessor methods to get and set cookie +attributes. Each accessor has a similar syntax. Called without +arguments, the accessor returns the current value of the attribute. +Called with an argument, the accessor changes the attribute and +returns its new value. + +=over 4 + +=item B<name()> + +Get or set the cookie's name. Example: + + $name = $c->name; + $new_name = $c->name('fred'); + +=item B<value()> + +Get or set the cookie's value. Example: + + $value = $c->value; + @new_value = $c->value(['a','b','c','d']); + +B<value()> is context sensitive. In a list context it will return +the current value of the cookie as an array. In a scalar context it +will return the B<first> value of a multivalued cookie. + +=item B<domain()> + +Get or set the cookie's domain. + +=item B<path()> + +Get or set the cookie's path. + +=item B<expires()> + +Get or set the cookie's expiration time. + +=back + + +=head1 AUTHOR INFORMATION + +Copyright 1997-1998, Lincoln D. Stein. All rights reserved. + +This library is free software; you can redistribute it and/or modify +it under the same terms as Perl itself. + +Address bug reports and comments to: lstein@cshl.org + +=head1 BUGS + +This section intentionally left blank. + +=head1 SEE ALSO + +L<CGI::Carp>, L<CGI> + +=cut |