/usr/share/perl5/wApua/Cache.pm is in wapua 0.06.1-3.
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 | package wApua::Cache;
# Copyright (C) 2000, 2006, 2009 by Axel Beckert <wapua@deuxchevaux.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA.
#
# You can reach the author by snail-mail at the following address:
#
# Axel Beckert
# Kuerbergstrasse 20
# 8049 Zurich, Switzerland
use strict;
# This is the RAM cache object for wApua, a WAP User Agent, mainly
# developed for debugging WML pages...
use HTTP::Response;
use HTTP::Request;
# constructor
sub new {
shift;
my $self = {};
$self->{response} = {};
$self->{ua} = shift;
$self->{ua_headers} = shift;
bless($self);
return $self;
}
# cache functions
sub addResponse { # add page to cache, needs response object as parameter
my $self = shift;
my $response = shift;
$self->{response}{$response->base} = $response;
return 1; # successfully saved
}
sub getCachedContent { # retrieve page from cache
my $self = shift;
my $url = shift;
return (exists $self->{response}{$url} ?
$self->{response}{$url}->content : 0);
}
sub getCachedResponse { # retrieve cached response object from cache
my $self = shift;
my $url = shift;
if (exists $self->{response}{$url}) {
return $self->{response}{$url};
} else {
warn "Asking for response for $url although it is not stored in cache!";
return 0;
}
}
sub getLastModified { # get last modification date of cached object
my $self = shift;
my $url = shift;
if (exists $self->{response}{$url}) {
return $self->{response}{$url}->last_modified;
} else {
warn "Asking for the last-modified-date of $url although it is not stored in cache!";
return 0;
}
}
sub getContentLength { # get last modification date of cached object
my $self = shift;
my $url = shift;
if (exists $self->{response}{$url}) {
return $self->{response}{$url}->content_length;
} else {
warn "Asking for the content length of $url although it is not stored in cache!";
return 0;
}
}
sub inCache { # is the page already cached?
my $self = shift;
my $url = shift;
return exists $self->{response}{$url};
}
sub getURLs { # get the URLs of all pages in the cache
my $self = shift;
return keys %{$self->{response}};
}
sub expired { # is it necessary to retrieve the page (again)?
my $self = shift;
my $url = shift;
my $headers = $self->{ua_headers};
if (@_) {
$headers = shift;
}
return 0;
# if (exists $self->{response}{$url}) {
# my $request = new HTTP::Request('HEAD', $url, $headers);
# print $request->as_string;
# my $response = $self->{ua}->request($request);
# print $response->as_string;
# print "HEAD: ".($response->last_modified)."\n";
# print "Cache: ".($self->{response}{$url}->last_modified)."\n";
# if ($response->last_modified > $self->{response}{$url}->last_modified) {
# return 1;
# } else {
# return 0;
# }
# } else {
# warn "Asking if $url is expired in cache although it is not stored in cache!";
# return 1;
# }
}
sub getContent { # retrieve page
my $self = shift;
my $url = shift;
return $self->getResponse()->content;
}
sub getResponse { # retrieve response
my $self = shift;
my $url = shift;
if ($self->inCache($url) && $self->expired($url)) {
return getCachedResponse($url);
} else {
my $request = new HTTP::Request('GET', $url, $self->{ua_headers});
print $request->as_string;
my $response = $self->{ua}->request($request);
print $response->as_string;
return $response;
}
}
return 1;
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