133 lines
3.3 KiB
Perl
133 lines
3.3 KiB
Perl
package WebGUI::HTML;
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=head1 LEGAL
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-------------------------------------------------------------------
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WebGUI is Copyright 2001-2003 Plain Black LLC.
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-------------------------------------------------------------------
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Please read the legal notices (docs/legal.txt) and the license
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(docs/license.txt) that came with this distribution before using
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this software.
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-------------------------------------------------------------------
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http://www.plainblack.com info@plainblack.com
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-------------------------------------------------------------------
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=cut
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use HTML::TagFilter;
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use strict;
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use WebGUI::Macro;
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use WebGUI::Session;
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=head1 NAME
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Package WebGUI::HTML
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=head1 DESCRIPTION
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A package for manipulating and massaging HTML.
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=head1 SYNOPSIS
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use WebGUI::HTML;
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$html = WebGUI::HTML::cleanSegment($html);
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$html = WebGUI::HTML::filter($html);
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=head1 METHODS
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These methods are available from this package:
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=cut
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#-------------------------------------------------------------------
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=head2 cleanSegment ( html )
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Returns an HTML segment that has been stripped of the <BODY> tag and anything before it, as well as the </BODY> tag and anything after it.
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NOTE: This filter does have one exception, it leaves anything before the <BODY> tag that is enclosed in <STYLE></STYLE> tags.
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=over
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=item html
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The HTML segment you want cleaned.
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=back
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=cut
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sub cleanSegment {
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my ($style, $value);
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$value = $_[0];
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if ($value =~ s/\r/\n/g) {
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$value =~ s/\n\n/\n/g
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}
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$value =~ m/(\<style.*?\/style\>)/ixsg;
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$style = $1;
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$value =~ s/\A.*?\<body.*?\>(.*?)/$style$1/ixsg;
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$value =~ s/(.*?)\<\/body\>.*?\z/$1/ixsg;
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return $value;
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}
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#-------------------------------------------------------------------
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=head2 filter ( html [, filter ] )
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Returns HTML with unwanted tags filtered out.
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=over
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=item html
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The HTML content you want filtered.
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=item filter
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Choose from "all", "none", "macros", "javascript", or "most". Defaults to "most". "all" removes all HTML tags and macros; "none" removes no HTML tags; "javascript" removes all references to javacript and macros; "macros" removes all macros, but nothing else; and "most" removes all but simple formatting tags like bold and italics.
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=back
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=cut
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sub filter {
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my ($filter, $html, $type);
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$type = $_[1];
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if ($type eq "all") {
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$filter = HTML::TagFilter->new(allow=>{'none'},strip_comments=>1);
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$html = $filter->filter($_[0]);
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return WebGUI::Macro::filter($html);
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} elsif ($type eq "javascript") {
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$html = $_[0];
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$html =~ s/\<script.*?\/script\>//ixsg;
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$html =~ s/(href="??)javascript\:.*?\)/$1removed/ixsg;
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$html =~ s/onClick/removed/ixsg;
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$html =~ s/onDblClick/removed/ixsg;
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$html =~ s/onLoad/removed/ixsg;
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$html =~ s/onMouseOver/removed/ixsg;
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$html =~ s/onMouseOut/removed/ixsg;
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$html =~ s/onMouseMove/removed/ixsg;
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$html =~ s/onMouseUp/removed/ixsg;
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$html =~ s/onMouseDown/removed/ixsg;
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$html =~ s/onKeyPress/removed/ixsg;
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$html =~ s/onKeyUp/removed/ixsg;
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$html =~ s/onKeyDown/removed/ixsg;
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$html =~ s/onSubmit/removed/ixsg;
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$html =~ s/onReset/removed/ixsg;
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$html = WebGUI::Macro::filter($html);
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} elsif ($type eq "macros") {
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return WebGUI::Macro::filter($_[0]);
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} elsif ($type eq "none") {
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return $_[0];
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} else {
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$filter = HTML::TagFilter->new; # defaultly strips almost everything
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$html = $filter->filter($_[0]);
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return WebGUI::Macro::filter($html);
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}
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}
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1;
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