Closes #833: Kses now built as module

git-svn-id: https://code.elgg.org/elgg/trunk@3222 36083f99-b078-4883-b0ff-0f9b5a30f544

18 files changed, 4903 insertions, 0 deletions

diff --git a/mod/kses/vendors/kses/AUTHORS b/mod/kses/vendors/kses/AUTHORS
new file mode 100644
index 000000000..2e034090f
--- /dev/null
+++ b/mod/kses/vendors/kses/AUTHORS
@@ -0,0 +1,26 @@
+kses AUTHORS
+============
+
+* Ulf Harnhammar (main coder, project leader)
+  metaur at users dot sourceforge dot net
+  http://www.advogato.org/person/metaur/
+
+* Richard R. Vásquez, Jr. (coder of object-oriented kses)
+  contact him at http://chaos.org/contact/
+
+
+THANKS TO
+=========
+
+* Peter Valach (code review and feature suggestions)
+* Simon Cornelius P. Umacob (testing)
+* unitedhacker2000@yahoo.com (bug report)
+* Dirk Haun (feature suggestion)
+* Hendy Irawan (bug report and documentation suggestion)
+* dude21 (feature suggestion)
+* Christian Bolstad (documentation suggestion)
+* SourceForge (project hosting)
+
+Thanks also go to a lot of people who posted to the Bugtraq and
+Webappsec mailing lists about XSS or HTML filters. They gave us some
+valuable insights.
diff --git a/mod/kses/vendors/kses/COPYING b/mod/kses/vendors/kses/COPYING
new file mode 100644
index 000000000..d60c31a97
--- /dev/null
+++ b/mod/kses/vendors/kses/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
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diff --git a/mod/kses/vendors/kses/ChangeLog b/mod/kses/vendors/kses/ChangeLog
new file mode 100644
index 000000000..7102396ce
--- /dev/null
+++ b/mod/kses/vendors/kses/ChangeLog
@@ -0,0 +1,168 @@
+kses ChangeLog
+==============
+
+* 0.2.2 and 0.2.2-rc1
+
+0.2.2 was released on the 7th of February 2005. We also had a release
+candidate, 0.2.2-rc1, that was released on the 30th of January 2005.
+
+I (Ulf) am sorry for this long delay, but I lost interest in kses for a
+while and worked on auditing C/C++ code for buffer overflows and format
+string bugs in the Debian Security Audit Project instead
+( http://www.debian.org/security/audit/ ).
+
+This version has the following changes:
+
+- Richard contributed an additional object-oriented kses version for
+  PHP 5, which takes advantage of that PHP version's improved object
+  orientation. You can find it in the oop/ directory.
+
+- Richard added RemoveProtocol(), RemoveProtocols() and SetProtocols()
+  methods to both object-oriented kses versions. This closes SourceForge
+  bug #892477.
+
+- Richard also did other smaller changes to the object-oriented kses
+  versions. See oop/oop.kses.changelog.txt for the gory details.
+
+- The code that checks whether used elements and attributes are allowed
+  now uses isset() to avoid notices under certain configurations. This
+  hopefully closes SourceForge bug #918493.
+
+- The check for the Opera extra whitespace character #173 was moved so
+  it only affects attribute values and nothing else. This is helpful for
+  Asian kses users, who use that character in writing. (This is just a
+  temporary solution. A better one will show up in the next version, when
+  the parser is rewritten.) This closes SourceForge bug #834645, kind of.
+
+- Now the program will not even look at attributes and closing XHTML
+  slashes for closing HTML elements. This will make kses execute faster
+  and it won't accept atrocities like </br /> anymore.
+
+- Moved references in examples/test.php from function calls to the function
+  definition, making it better PHP.
+
+- The output of examples/test.php and examples/filter.php now conform fully
+  to W3C's HTML specification.
+
+- From now on, kses releases will be distributed both as .tar.gz and .zip
+  archives to please our Wintendo users. This closes SourceForge feature
+  request #900380.
+
+- Changed to new copyright year and paper mail address.
+
+
+* 0.2.1
+
+0.2.1 was released on the 29th of September 2003.
+It has the following changes:
+
+
+- There is now an additional version of kses, using the object-oriented
+  paradigm. Thanks a lot to Richard R. Vasquez, Jr., who created it! Anyone
+  who wants to make functional programming, logical programming or spaghetti
+  programming versions of kses as well (or any other programming paradigm that
+  you like), go ahead! All the people who like old procedural programming for
+  web applications shouldn't despair, though, as both versions will be
+  maintained with each release.
+
+- kses now has some new attribute value checks: minlen, minval and valueless.
+  See docs/attribute-value-checks for an explanation.
+
+- For some reason, the Opera developers decided to make chr(173) a whitespace
+  character in URL protocols, both when it occurs raw and in an entity. kses
+  now handles this.
+
+- The URL protocol whitelisting system now decodes entities before removing
+  NULLs and whitespaces.
+
+
+* 0.2.0
+
+0.2.0 was released on the 25th of July 2003.
+It has the following changes:
+
+
+- kses now supports checking of attribute values, and not just element names
+  and attribute names. The attribute value checks that exist so far are
+  'maxlen' (checks how long attribute values are, to avoid Buffer Overflows)
+  and 'maxval' (checks how big an integer value is, to avoid Denial of Service
+  attacks).
+
+  Buffer Overflows could both be a problem for WWW clients and different
+  servers on the Internet that an HTML document links to. One example is
+  <frame src="ftp://ftp.v1ct1m.com/AAAAAA..thousands_of_A's...">.
+
+  Denial of Service attacks can take the form of too big sizes of iframes or
+  other things. One example is <iframe src="http://some.web.server/"
+  width="20000" height="2000">, which makes some client machines completely
+  overloaded.
+
+- kses' old feature of removing "javascript:" from attribute values has been
+  improved. It now has a whole system for white listing of URL protocols, so
+  you can specify that it's acceptable with http:, https:, ftp: and gopher:,
+  but no other protocols in attribute values. The system tries pretty hard to
+  do the right thing with whitespace, upper/lower case, HTML entities
+  ("jav&#97;script:") and repeated entries ("javascript:javascript:alert(57)").
+
+- kses now supports both HTML and XHTML code, by allowing " /" at the end of
+  tags.
+
+- kses now removes Netscape 4's JavaScript entities, having the form
+  "&{alert(57)};". They don't even seem to work on all versions of Netscape 4,
+  but for completeness' sake it seemed like a good feature to add.
+
+- A bug with NULLs in javascript: URLs was fixed.
+  (Reported by Simon Cornelius P. Umacob - thanks!)
+
+- As a nice side effect of the white listing of URL protocols, kses now also
+  normalizes all HTML entities in documents. It will change HTML code with bad
+  entities to the right form, for example "AT&T" will be converted to
+  "AT&amp;T" and "<a href='lyrics.php?band=ladytron&lyrics=playgirl'>" will be
+  converted to "<a href='lyrics.php?band=ladytron&amp;lyrics=playgirl'>".
+  "&#000058;" will be converted to "&#58;", "&#XYZZY;" will be converted to
+  "&amp;#XYZZY;", "&auml!;" will be converted to "&amp;auml!;" and so on.
+
+  As shown above, it will process HTML entities that it doesn't understand.
+  It will also deal with too big numbers in numeric HTML entities, which is
+  helpful as many browsers seem to wrap them around at 2 ** 32, so the
+  characters 58, 58 + (2 ** 32), 58 + (2 ** 64) etcetera are all colons to the
+  web browser.
+
+- You can now use upper case letters in your $allowed_html array, in element
+  names, attribute names and attribute value check names. Version 0.1.0
+  required everything in that array to be in lower case, but that's not
+  necessary any more. You can also use upper case letters in
+  $allowed_protocols.
+
+- The "Really malformed thing" bug from the TODO file was fixed.
+  It used to convert this string:
+  x > 5 <a href="blah">
+  to:
+  x &gt; 5 &lt;a href=&quot;blah&quot;&gt;
+  and now it converts it to:
+  x &gt; 5 <a href="blah">
+
+- The "Weird malformed thing" bug from the TODO file was fixed.
+  It used to convert this string:
+  <a href="5 href=6>
+  to:
+  <a href="6">
+  because of the way kses restarts after a parse error in kses_hair(). Now it
+  converts it to:
+  <a>
+
+- A problem with slashes in HTML tags was fixed.
+
+- examples/filter.php used to use $SCRIPT_NAME, which doesn't work on
+  Windows.
+  (Reported by Simon Cornelius P. Umacob - thanks!)
+
+- kses now allows dashes in attribute names, for things like
+  <meta http-equiv=..>.
+
+
+* 0.1.0, first public version
+
+0.1.0 was released on the 9th of June 2003.
+It was announced on three security related mailing lists on Friday the 13th
+of June (nothing bad happened to it though).
diff --git a/mod/kses/vendors/kses/README b/mod/kses/vendors/kses/README
new file mode 100644
index 000000000..192524c9f
--- /dev/null
+++ b/mod/kses/vendors/kses/README
@@ -0,0 +1,206 @@
+kses 0.2.2 README  [kses strips evil scripts!]
+=================
+
+
+* INTRODUCTION *
+
+
+Welcome to kses - an HTML/XHTML filter written in PHP. It removes all unwanted
+HTML elements and attributes, no matter how malformed HTML input you give it.
+It also does several checks on attribute values. kses can be used to avoid
+Cross-Site Scripting (XSS), Buffer Overflows and Denial of Service attacks,
+among other things.
+
+The program is released under the terms of the GNU General Public License. You
+should look into what that means, before using kses in your programs. You can
+find the full text of the license in the file COPYING.
+
+
+* FEATURES *
+
+
+Some of kses' current features are:
+
+* It will only allow the HTML elements and attributes that it was explicitly
+told to allow.
+
+* Element and attribute names are case-insensitive (a href vs A HREF).
+
+* It will understand and process whitespace correctly.
+
+* Attribute values can be surrounded with quotes, apostrophes or nothing.
+
+* It will accept valueless attributes with just names and no values (selected).
+
+* It will accept XHTML's closing " /" marks.
+
+* Attribute values that are surrounded with nothing will get quotes to avoid
+producing non-W3C conforming HTML
+(<a href=http://sourceforge.net/projects/kses> works but isn't valid HTML).
+
+* It handles lots of types of malformed HTML, by interpreting the existing
+code the best it can and then rebuilding new code from it. That's a better
+approach than trying to process existing code, as you're bound to forget about
+some weird special case somewhere. It handles problems like never-ending
+quotes and tags gracefully.
+
+* It will remove additional "<" and ">" characters that people may try to
+sneak in somewhere.
+
+* It supports checking attribute values for minimum/maximum length and
+minimum/maximum value, to protect against Buffer Overflows and Denial of
+Service attacks against WWW clients and various servers. You can stop
+<iframe src= width= height=> from having too high values for width and height,
+for instance.
+
+* It has got a system for whitelisting URL protocols. You can say that
+attribute values may only start with http:, https:, ftp: and gopher:, but no
+other URL protocols (javascript:, java:, about:, telnet:..). The functions that
+do this work handle whitespace, upper/lower case, HTML entities
+("jav&#97;script:") and repeated entries ("javascript:javascript:alert(57)").
+It also normalizes HTML entities as a nice side effect.
+
+* It removes Netscape 4's JavaScript entities ("&{alert(57)};").
+
+* It handles NULL bytes and Opera's chr(173) whitespace characters.
+
+* There is a procedural version and two object-oriented versions (for PHP 4
+  and PHP 5) of kses.
+
+
+* USE IT *
+
+
+It's very easy to use kses in your own PHP web application! Basic usage looks
+like this:
+
+
+<?php
+
+include 'kses.php';
+
+$allowed = array('b' => array(),
+                 'i' => array(),
+                 'a' => array('href' => 1, 'title' => 1),
+                 'p' => array('align' => 1),
+                 'br' => array());
+
+$val = $_POST['val'];
+if (get_magic_quotes_gpc())
+  $val = stripslashes($val);
+# You must strip slashes from magic quotes, or kses will get confused.
+
+$val = kses($val, $allowed); # The filtering takes place here.
+
+# Do something with $val.
+
+?>
+
+
+This definition of $allowed means that only the elements B, I, A, P and BR are
+allowed (along with their closing tags /B, /I, /A, /P and /BR). B, I and BR
+may not have any attributes. A may only have the attributes HREF and TITLE,
+while P may only have the attribute ALIGN. You can list the elements and
+attributes in the array in any mixture of upper and lower case. kses will also
+recognize HTML code that uses both lower and upper case.
+
+It's important to select the right allowed attributes, so you won't open up
+an XSS hole by mistake. Some important attributes that you mustn't allow
+include but are not limited to: 1) style, and 2) all intrinsic events
+attributes (onMouseOver and so on, on* really). I'll write more about this in
+the documentation that will be distributed with future versions of kses.
+
+It's also important to note that kses' HTML input must be cleaned of all
+slashes coming from magic quotes. If the rest of your code requires these
+slashes to be present, you can always add them again after calling kses with
+a simple addslashes() call.
+
+You should take a look at the documentation in the docs/ directory and the
+examples in the examples/ directory, to get more information on how to use
+kses. The object-oriented versions of kses are also worth checking out, and
+they're included in the oop/ directory.
+
+
+* UPGRADING TO 0.2.2 *
+
+
+kses 0.2.2 is backwards compatible with all previous releases, so upgrading
+should just be a matter of using a new version of kses.php instead of an old
+one.
+
+
+* NEW VERSIONS, MAILING LISTS AND BUG REPORTS *
+
+
+If you want to download new versions, subscribe to the kses-general mailing
+list or even take part in the development of kses, we refer you to its
+homepage at  http://sourceforge.net/projects/kses . New developers and beta
+testers are more than welcome!
+
+If you have any bug reports, suggestions for improvement or simply want to tell
+us that you use kses for some project, feel free to post to the kses-general
+mailing list. If you have found any security problems (particularly XSS,
+naturally) in kses, please contact Ulf privately at  metaur at users dot
+sourceforge dot net  so he can correct it before you or someone else tells the
+public about it.
+
+(No, it's not a security problem in kses if some program that uses it allows a
+bad attribute, silly. If kses is told to accept the element body with the
+attributes style and onLoad, it will accept them, even if that's a really bad
+idea, securitywise.)
+
+
+* OTHER HTML FILTERS *
+
+
+Here are the other stand-alone, open source HTML filters that we currently know
+of:
+
+* Htmlfilter for PHP - the filter from Squirrelmail
+  PHP
+  Konstantin Riabitsev
+  http://linux.duke.edu/projects/mini/htmlfilter/
+
+* HTML::StripScripts and related CPAN modules
+  Perl
+  Nick Cleaton
+  http://search.cpan.org/perldoc?HTML%3A%3AStripScripts
+
+* SafeHtmlChecker [is this really open source?]
+  PHP
+  Simon Willison
+  http://simon.incutio.com/archive/2003/02/23/safeHtmlChecker
+
+There are also a lot of HTML filters that were written specifically for some
+program. Some of them are better than others.
+
+Please write to the kses-general mailing list if you know of any other
+stand-alone, open-source filters.
+
+
+* DEDICATION *
+
+
+kses 0.2.2 is dedicated to Audrey Tautou and Jean-Pierre Jeunet.
+
+
+* MISC *
+
+
+The kses code is based on an HTML filter that Ulf wrote on his own back in 2002
+for the open-source project Gnuheter ( http://savannah.nongnu.org/projects/
+gnuheter ). Gnuheter is a fork from PHP-Nuke. The HTML filter has been
+improved a lot since then.
+
+To stop people from having sleepless nights, we feel the urgent need to state
+that kses doesn't have anything to do with the KDE project, despite having a
+name that starts with a K.
+
+In case someone was wondering, Ulf is available for kses-related consulting.
+
+Finally, the name kses comes from the terms XSS and access. It's also a
+recursive acronym (every open-source project should have one!) for "kses
+strips evil scripts".
+
+
+// Ulf and the kses development group, February 2005
diff --git a/mod/kses/vendors/kses/TODO b/mod/kses/vendors/kses/TODO
new file mode 100644
index 000000000..93652d46a
--- /dev/null
+++ b/mod/kses/vendors/kses/TODO
@@ -0,0 +1,40 @@
+kses TODO
+=========
+
+* create a nice homepage with interactive kses testing
+
+* remove stuff in between <script>..</script> and <style>..</style>
+
+* better fix for chr(173) bug and try to allow for "style:" where people
+  want to use it
+
+* XHTML tags of the style <br/> instead of <br />
+  This is related to a small bug with <a href="blah />
+  Solution: rewrite parser.
+
+(* rewrite document to XHTML or HTML)
+
+* more attribute value checks
+
+* more types of hooks
+
+* return array of removed elements and attributes
+
+* give the option of turning unacceptable elements to entities instead of
+  removing them (and turn unacceptable attributes to their own tag, which is
+  then turned to entities?) .. perhaps turn to comments as well?
+
+* ">" in HTML tags
+  <img src="blah.gif" alt="x > 5">
+  Not very important, but..
+
+(* make document well-formed.. there is HTML Tidy, but perhaps we want this
+   functionality in kses itself?)
+
+* port to other programming languages to achieve world domination
+
+* lots of testing
+
+* write better documentation
+
+* feedback from users
diff --git a/mod/kses/vendors/kses/docs/attribute-value-checks b/mod/kses/vendors/kses/docs/attribute-value-checks
new file mode 100644
index 000000000..8b0d645ee
--- /dev/null
+++ b/mod/kses/vendors/kses/docs/attribute-value-checks
@@ -0,0 +1,68 @@
+kses attribute value checks
+===========================
+
+As you've probably already read in the README file, an $allowed_html array
+normally looks like this:
+
+$allowed = array('b' => array(),
+                 'i' => array(),
+                 'a' => array('href' => 1,
+                              'title' => 1),
+                 'p' => array('align' => 1),
+                 'br' => array());
+
+This sets what elements and attributes are allowed.
+
+From kses 0.2.0, you can also perform some checks on the attribute values. You
+do it like this:
+
+$allowed = array('b' => array(),
+                 'i' => array(),
+                 'a' => array('href' =>
+                                array('maxlen' => 100),
+                              'title' => 1),
+                 'p' => array('align' => 1),
+                 'font' => array('size' =>
+                                array('maxval' => 20)),
+                 'br' => array());
+
+This means that kses should perform the maxlen check with the value 100 on the
+<a href=> value, as well as the maxval check with the value 20 on the <font
+size=> value.
+
+The currently implemented checks (with more to come) are 'maxlen', 'maxval',
+'minlen', 'minval' and 'valueless'.
+
+'maxlen' checks that the length of the attribute value is not greater than the
+given value. It is helpful against Buffer Overflows in WWW clients and various
+servers on the Internet. In my example above, it would mean that
+"<a href='ftp://ftp.v1ct1m.com/AAAA..thousands_of_A's...'>" wouldn't be
+accepted.
+
+Of course, this problem is even worse if you put that long URL in a <frame>
+tag instead, so the WWW client will fetch it automatically without a user
+having to click it.
+
+'maxval' checks that the attribute value is an integer greater than or equal to
+zero, that it doesn't have an unreasonable amount of zeroes or whitespace (to
+avoid Buffer Overflows), and that it is not greater than the given value. In
+my example above, it would mean that "<font size='20'>" is accepted but
+"<font size='21'>" is not. This check helps against Denial of Service attacks
+against WWW clients.
+
+One example of this DoS problem is <iframe src="http://some.web.server/"
+width="20000" height="2000">, which makes some client machines completely
+overloaded.
+
+'minlen' and 'minval' works the same as 'maxlen' and 'maxval', except that they
+check for minimum lengths and values instead of maximum ones.
+
+'valueless' checks if an attribute has a value (like <a href="blah">) or not
+(<option selected>). If the given value is a "y" or a "Y", the attribute must
+not have a value to be accepted. If the given value is an "n" or an "N", the
+attribute must have a value. Note that <a href=""> is considered to have a
+value, so there's a difference between valueless attributes and attribute
+values with the length zero.
+
+You can combine more than one check, by putting one after the other in the
+inner array.
diff --git a/mod/kses/vendors/kses/docs/hooks b/mod/kses/vendors/kses/docs/hooks
new file mode 100644
index 000000000..971ff1ca4
--- /dev/null
+++ b/mod/kses/vendors/kses/docs/hooks
@@ -0,0 +1,7 @@
+kses hooks
+==========
+
+Sometimes you want to perform one more action on all data that kses will
+filter. There is a special function for that purpose called kses_hook(). kses
+calls it from its main function kses(), so if you insert some code in
+kses_hook(), it will always be called to change all data that kses sees.
diff --git a/mod/kses/vendors/kses/docs/stripping-everything b/mod/kses/vendors/kses/docs/stripping-everything
new file mode 100644
index 000000000..f11742b7c
--- /dev/null
+++ b/mod/kses/vendors/kses/docs/stripping-everything
@@ -0,0 +1,7 @@
+kses stripping everything
+=========================
+
+Sometimes you want to use kses for stripping all (X)HTML tags from a document.
+You do it by calling kses like this:
+
+$doc = kses($doc, array());
diff --git a/mod/kses/vendors/kses/docs/supported-formats b/mod/kses/vendors/kses/docs/supported-formats
new file mode 100644
index 000000000..c0a9d9740
--- /dev/null
+++ b/mod/kses/vendors/kses/docs/supported-formats
@@ -0,0 +1,6 @@
+kses supported formats
+======================
+
+It should be noted that kses doesn't deal with any smiley plus newline plus
+HTML format. It uses HTML or XHTML, both as input and as output.
+Conversions from the preferred format to or from HTML or XHTML is up to you.
diff --git a/mod/kses/vendors/kses/docs/whitelisted-url-protocols b/mod/kses/vendors/kses/docs/whitelisted-url-protocols
new file mode 100644
index 000000000..a0032c4cc
--- /dev/null
+++ b/mod/kses/vendors/kses/docs/whitelisted-url-protocols
@@ -0,0 +1,15 @@
+kses whitelisted URL protocols
+==============================
+
+From kses 0.2.0, it has a function that checks all attribute values for URL
+protocols and only allows the protocols given in a whitelist.
+
+If you call kses the old way with two parameters - a string and an
+$allowed_html array - it will take its own default array, which whitelists the
+protocols http, https, ftp, news, nntp, telnet, gopher and mailto. Pretty
+reasonable, but anyone who wants to change it just calls the kses() function
+with a third parameter, like this:
+
+$string = kses($string, $allowed_html, array('http', 'https'));
+
+Note that you shouldn't include any colon after http or other protocol names.
diff --git a/mod/kses/vendors/kses/examples/filter.php b/mod/kses/vendors/kses/examples/filter.php
new file mode 100644
index 000000000..9a026795b
--- /dev/null
+++ b/mod/kses/vendors/kses/examples/filter.php
@@ -0,0 +1,138 @@
+<?php
+
+# filter - simple example script for kses
+# Copyright (C) 2003, 2005  Ulf Harnhammar
+#
+# This program is free software and open source software; you can redistribute
+# it and/or modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of the License,
+# or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  or visit
+# http://www.gnu.org/licenses/gpl.html
+#
+# *** CONTACT INFORMATION ***
+#
+# E-mail:      metaur at users dot sourceforge dot net
+# Web page:    http://sourceforge.net/projects/kses
+# Paper mail:  Ulf Harnhammar
+#              Ymergatan 17 C
+#              753 25  Uppsala
+#              SWEDEN
+
+# *** INCLUDE kses, DEFINE ELEMENTS+ATTRIBUTES, STRIP MAGIC QUOTES ***
+
+include '../kses.php';
+
+$allowed = array('b' => array(),
+                 'i' => array(),
+                 'a' => array('href'  => array('minlen' => 3, 'maxlen' => 50),
+                              'title' => array('valueless' => 'n')),
+                 'p' => array('align' => 1,
+                              'dummy' => array('valueless' => 'y')),
+                 'img' => array('src' => 1), # FIXME
+                 'font' => array('size' =>
+                                         array('minval' => 4, 'maxval' => 20)),
+                 'br' => array());
+
+$val = $_POST['val'];
+if (get_magic_quotes_gpc())
+  $val = stripslashes($val);
+
+# *** PRINT SOME HTML CODE ***
+
+?>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<title>kses example: HTML filter</title>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+</head>
+
+<body>
+
+<?php
+
+# *** SHOW THE USER'S INPUT ***
+
+?>
+<h1>Input</h1>
+
+<pre><?= htmlspecialchars($val); ?></pre>
+
+<?php
+
+# *** SHOW IT AFTER FILTERING ***
+
+?>
+<h1>Output</h1>
+
+<pre><?php
+
+$val = kses($val, $allowed, array('http', 'https'));
+# The filtering takes place on the line above.
+echo htmlspecialchars($val);
+
+?></pre>
+
+<?php
+
+# *** DISPLAY A TEXTAREA FOR THE USER TO TYPE IN ***
+
+?>
+<h1>Type something</h1>
+
+<form method="POST" action="filter.php">
+<textarea name="val" rows=5 cols=50><?= htmlspecialchars($val); ?></textarea>
+<br>
+<input type="submit" value="Send it!">
+</form>
+
+<?php
+
+# *** SHOW ALLOWED ELEMENTS+ATTRIBUTES ***
+
+?>
+<p>
+Only the following HTML elements and attributes are allowed:
+</p>
+
+<p>
+<?php
+$first = 1;
+foreach ($allowed as $htmlkey => $htmlval)
+{
+  if (!$first)
+    echo ' ';
+  $first = 0;
+
+  echo "&lt;$htmlkey"; # element
+
+  foreach ($htmlval as $html2key => $html2val)
+    echo " <i>$html2key=</i>"; # attribute
+
+  echo "&gt;";
+}
+
+?>
+
+</p>
+
+<p>
+&lt;a href=&gt; must have a length in the range 3 to 50.<br>
+&lt;a title=&gt; must not be valueless.<br>
+&lt;p dummy&gt; must be valueless.<br>
+&lt;font size=&gt; must have a value in the range 4 to 20.<br>
+Only the URL protocols "http" and "https" are allowed.
+</p>
+
+</body>
+</html>
diff --git a/mod/kses/vendors/kses/examples/test.php b/mod/kses/vendors/kses/examples/test.php
new file mode 100644
index 000000000..e0c6695c8
--- /dev/null
+++ b/mod/kses/vendors/kses/examples/test.php
@@ -0,0 +1,224 @@
+<?php
+
+# test - checks if a kses installation is working
+# Copyright (C) 2003, 2005  Ulf Harnhammar
+#
+# This program is free software and open source 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.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  or visit
+# http://www.gnu.org/licenses/gpl.html
+#
+# *** CONTACT INFORMATION ***
+#
+# E-mail:      metaur at users dot sourceforge dot net
+# Web page:    http://sourceforge.net/projects/kses
+# Paper mail:  Ulf Harnhammar
+#              Ymergatan 17 C
+#              753 25  Uppsala
+#              SWEDEN
+
+include '../kses.php';
+
+?>
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<title>kses test</title>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+</head>
+
+<body>
+<h1>kses test</h1>
+<p>
+
+<?php
+
+
+# *** FUNCTION DEFINITIONS ***
+
+
+function onetest($htmlbefore, $htmlafter, &$score, &$max, $allowed)
+###############################################################################
+# This function performs one kses test.
+###############################################################################
+{
+  $max++;
+
+  $htmlkses = kses($htmlbefore, $allowed);
+#  echo "htmlkses --".htmlspecialchars($htmlkses)."--<br>\n";
+
+  if ($htmlkses == $htmlafter)
+  {
+    echo 'OK';
+    $score++;
+  }
+  else
+    echo 'not OK';
+
+  echo "<br>\n";
+} # function onetest
+
+
+# *** MAIN PROGRAM ***
+
+
+$max = $score = 0;
+
+# Test #1
+
+echo 'Test #1.. ';
+$htmlbefore = 'kses \'kses\' kses "kses" kses \\kses\\';
+$htmlafter =  $htmlbefore;
+onetest($htmlbefore, $htmlafter, $score, $max, array());
+
+# Test #2
+
+echo 'Test #2.. ';
+$htmlbefore = 'kses <br>';
+$htmlafter =  'kses ';
+onetest($htmlbefore, $htmlafter, $score, $max, array());
+
+# Test #3
+
+echo 'Test #3.. ';
+$htmlbefore = 'kses <  BR  >';
+$htmlafter =  'kses <BR>';
+onetest($htmlbefore, $htmlafter, $score, $max, array('br' => array()));
+
+# Test #4
+
+echo 'Test #4.. ';
+$htmlbefore = 'kses > 5 <br>';
+$htmlafter =  'kses &gt; 5 <br>';
+onetest($htmlbefore, $htmlafter, $score, $max, array('br' => array()));
+
+# Test #5
+
+echo 'Test #5.. ';
+$htmlbefore = 'kses <  br';
+$htmlafter =  'kses <br>';
+onetest($htmlbefore, $htmlafter, $score, $max, array('br' => array()));
+
+# Test #6
+
+echo 'Test #6.. ';
+$htmlbefore = 'kses <a href=5>';
+$htmlafter =  'kses <a>';
+onetest($htmlbefore, $htmlafter, $score, $max, array('br' => array(),
+        'a' => array()));
+
+# Test #7
+
+echo 'Test #7.. ';
+$htmlbefore = 'kses <a href=5>';
+$htmlafter =  'kses <a href="5">';
+onetest($htmlbefore, $htmlafter, $score, $max,
+         array('a' => array('href' => 1)));
+
+# Test #8
+
+echo 'Test #8.. ';
+$htmlbefore = 'kses <a href>';
+$htmlafter =  $htmlbefore;
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => 1)));
+
+# Test #9
+
+echo 'Test #9.. ';
+$htmlbefore = 'kses <a href href=5 href=\'5\' href="5" dummy>';
+$htmlafter =  'kses <a href href="5" href=\'5\' href="5">';
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => 1)));
+
+# Test #10
+
+echo 'Test #10.. ';
+$htmlbefore = 'kses <a href="kses\\\\kses">';
+$htmlafter =  $htmlbefore;
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => 1)));
+
+# Test #11
+
+echo 'Test #11.. ';
+$htmlbefore = 'kses <a href="xxxxxx">';
+$htmlafter =  $htmlbefore;
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => array('maxlen' => 6))));
+
+# Test #12
+
+echo 'Test #12.. ';
+$htmlbefore = 'kses <a href="xxxxxxx">';
+$htmlafter =  'kses <a>';
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => array('maxlen' => 6))));
+
+# Test #13
+
+echo 'Test #13.. ';
+$htmlbefore = 'kses <a href="687">';
+$htmlafter =  'kses <a>';
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => array('maxval' => 686))));
+
+# Test #14
+
+echo 'Test #14.. ';
+$htmlbefore = 'kses <a href="xx"   /  >';
+$htmlafter =  'kses <a href="xx" />';
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => array('maxlen' => 6))));
+
+# Test #15
+
+echo 'Test #15.. ';
+$htmlbefore = 'kses <a href="JAVA java scrIpt : SCRIPT  :  alert(57)">';
+$htmlafter =  'kses <a href="alert(57)">';
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => 1)));
+
+# Test #16
+
+echo 'Test #16.. ';
+$htmlbefore = 'kses <a href="htt&#32; &#173;&#Xad;'.chr(173).'P://ulf">';
+$htmlafter =  'kses <a href="http://ulf">';
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => 1)));
+
+# Test #17
+
+echo 'Test #17.. ';
+$htmlbefore = 'kses <a href="/start.php"> kses <a href="start.php">';
+$htmlafter =  $htmlbefore;
+onetest($htmlbefore, $htmlafter, $score, $max,
+        array('a' => array('href' => 1)));
+
+
+# finished
+
+echo "<br>Score $score out of $max\n";
+
+if ($score != $max)
+  echo '<br>Something is wrong! Please contact '.
+       '<a href="mailto:kses-general@lists.sourceforge.net">'.
+       'the kses-general mailing list</a>, and tell us what '.
+       "operating system and PHP version you use.\n";
+
+?>
+
+</p>
+</body>
+</html>
diff --git a/mod/kses/vendors/kses/kses.php b/mod/kses/vendors/kses/kses.php
new file mode 100644
index 000000000..65da29599
--- /dev/null
+++ b/mod/kses/vendors/kses/kses.php
@@ -0,0 +1,555 @@
+<?php
+
+# kses 0.2.2 - HTML/XHTML filter that only allows some elements and attributes
+# Copyright (C) 2002, 2003, 2005  Ulf Harnhammar
+#
+# This program is free software and open source software; you can redistribute
+# it and/or modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of the License,
+# or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  or visit
+# http://www.gnu.org/licenses/gpl.html
+#
+# *** CONTACT INFORMATION ***
+#
+# E-mail:      metaur at users dot sourceforge dot net
+# Web page:    http://sourceforge.net/projects/kses
+# Paper mail:  Ulf Harnhammar
+#              Ymergatan 17 C
+#              753 25  Uppsala
+#              SWEDEN
+#
+# [kses strips evil scripts!]
+
+
+function kses($string, $allowed_html, $allowed_protocols =
+               array('http', 'https', 'ftp', 'news', 'nntp', 'telnet',
+                     'gopher', 'mailto'))
+###############################################################################
+# This function makes sure that only the allowed HTML element names, attribute
+# names and attribute values plus only sane HTML entities will occur in
+# $string. You have to remove any slashes from PHP's magic quotes before you
+# call this function.
+###############################################################################
+{
+  $string = kses_no_null($string);
+  $string = kses_js_entities($string);
+  $string = kses_normalize_entities($string);
+  $string = kses_hook($string);
+  $allowed_html_fixed = kses_array_lc($allowed_html);
+  return kses_split($string, $allowed_html_fixed, $allowed_protocols);
+} # function kses
+
+
+function kses_hook($string)
+###############################################################################
+# You add any kses hooks here.
+###############################################################################
+{
+  return $string;
+} # function kses_hook
+
+
+function kses_version()
+###############################################################################
+# This function returns kses' version number.
+###############################################################################
+{
+  return '0.2.2';
+} # function kses_version
+
+
+function kses_split($string, $allowed_html, $allowed_protocols)
+###############################################################################
+# This function searches for HTML tags, no matter how malformed. It also
+# matches stray ">" characters.
+###############################################################################
+{
+  return preg_replace('%(<'.   # EITHER: <
+                      '[^>]*'. # things that aren't >
+                      '(>|$)'. # > or end of string
+                      '|>)%e', # OR: just a >
+                      "kses_split2('\\1', \$allowed_html, ".
+                      '$allowed_protocols)',
+                      $string);
+} # function kses_split
+
+
+function kses_split2($string, $allowed_html, $allowed_protocols)
+###############################################################################
+# This function does a lot of work. It rejects some very malformed things
+# like <:::>. It returns an empty string, if the element isn't allowed (look
+# ma, no strip_tags()!). Otherwise it splits the tag into an element and an
+# attribute list.
+###############################################################################
+{
+  $string = kses_stripslashes($string);
+
+  if (substr($string, 0, 1) != '<')
+    return '&gt;';
+    # It matched a ">" character
+
+  if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $string, $matches))
+    return '';
+    # It's seriously malformed
+
+  $slash = trim($matches[1]);
+  $elem = $matches[2];
+  $attrlist = $matches[3];
+
+  if (!@isset($allowed_html[strtolower($elem)]))
+    return '';
+    # They are using a not allowed HTML element
+
+  if ($slash != '')
+    return "<$slash$elem>";
+  # No attributes are allowed for closing elements
+
+  return kses_attr("$slash$elem", $attrlist, $allowed_html,
+                   $allowed_protocols);
+} # function kses_split2
+
+
+function kses_attr($element, $attr, $allowed_html, $allowed_protocols)
+###############################################################################
+# This function removes all attributes, if none are allowed for this element.
+# If some are allowed it calls kses_hair() to split them further, and then it
+# builds up new HTML code from the data that kses_hair() returns. It also
+# removes "<" and ">" characters, if there are any left. One more thing it
+# does is to check if the tag has a closing XHTML slash, and if it does,
+# it puts one in the returned code as well.
+###############################################################################
+{
+# Is there a closing XHTML slash at the end of the attributes?
+
+  $xhtml_slash = '';
+  if (preg_match('%\s/\s*$%', $attr))
+    $xhtml_slash = ' /';
+
+# Are any attributes allowed at all for this element?
+
+  if (@count($allowed_html[strtolower($element)]) == 0)
+    return "<$element$xhtml_slash>";
+
+# Split it
+
+  $attrarr = kses_hair($attr, $allowed_protocols);
+
+# Go through $attrarr, and save the allowed attributes for this element
+# in $attr2
+
+  $attr2 = '';
+
+  foreach ($attrarr as $arreach)
+  {
+    if (!@isset($allowed_html[strtolower($element)]
+                            [strtolower($arreach['name'])]))
+      continue; # the attribute is not allowed
+
+    $current = $allowed_html[strtolower($element)]
+                            [strtolower($arreach['name'])];
+
+    if (!is_array($current))
+      $attr2 .= ' '.$arreach['whole'];
+    # there are no checks
+
+    else
+    {
+    # there are some checks
+      $ok = true;
+      foreach ($current as $currkey => $currval)
+        if (!kses_check_attr_val($arreach['value'], $arreach['vless'],
+                                 $currkey, $currval))
+        { $ok = false; break; }
+
+      if ($ok)
+        $attr2 .= ' '.$arreach['whole']; # it passed them
+    } # if !is_array($current)
+  } # foreach
+
+# Remove any "<" or ">" characters
+
+  $attr2 = preg_replace('/[<>]/', '', $attr2);
+
+  return "<$element$attr2$xhtml_slash>";
+} # function kses_attr
+
+
+function kses_hair($attr, $allowed_protocols)
+###############################################################################
+# This function does a lot of work. It parses an attribute list into an array
+# with attribute data, and tries to do the right thing even if it gets weird
+# input. It will add quotes around attribute values that don't have any quotes
+# or apostrophes around them, to make it easier to produce HTML code that will
+# conform to W3C's HTML specification. It will also remove bad URL protocols
+# from attribute values.
+###############################################################################
+{
+  $attrarr = array();
+  $mode = 0;
+  $attrname = '';
+
+# Loop through the whole attribute list
+
+  while (strlen($attr) != 0)
+  {
+    $working = 0; # Was the last operation successful?
+
+    switch ($mode)
+    {
+      case 0: # attribute name, href for instance
+
+        if (preg_match('/^([-a-zA-Z]+)/', $attr, $match))
+        {
+          $attrname = $match[1];
+          $working = $mode = 1;
+          $attr = preg_replace('/^[-a-zA-Z]+/', '', $attr);
+        }
+
+        break;
+
+      case 1: # equals sign or valueless ("selected")
+
+        if (preg_match('/^\s*=\s*/', $attr)) # equals sign
+        {
+          $working = 1; $mode = 2;
+          $attr = preg_replace('/^\s*=\s*/', '', $attr);
+          break;
+        }
+
+        if (preg_match('/^\s+/', $attr)) # valueless
+        {
+          $working = 1; $mode = 0;
+          $attrarr[] = array
+                        ('name'  => $attrname,
+                         'value' => '',
+                         'whole' => $attrname,
+                         'vless' => 'y');
+          $attr = preg_replace('/^\s+/', '', $attr);
+        }
+
+        break;
+
+      case 2: # attribute value, a URL after href= for instance
+
+        if (preg_match('/^"([^"]*)"(\s+|$)/', $attr, $match))
+         # "value"
+        {
+          $thisval = kses_bad_protocol($match[1], $allowed_protocols);
+
+          $attrarr[] = array
+                        ('name'  => $attrname,
+                         'value' => $thisval,
+                         'whole' => "$attrname=\"$thisval\"",
+                         'vless' => 'n');
+          $working = 1; $mode = 0;
+          $attr = preg_replace('/^"[^"]*"(\s+|$)/', '', $attr);
+          break;
+        }
+
+        if (preg_match("/^'([^']*)'(\s+|$)/", $attr, $match))
+         # 'value'
+        {
+          $thisval = kses_bad_protocol($match[1], $allowed_protocols);
+
+          $attrarr[] = array
+                        ('name'  => $attrname,
+                         'value' => $thisval,
+                         'whole' => "$attrname='$thisval'",
+                         'vless' => 'n');
+          $working = 1; $mode = 0;
+          $attr = preg_replace("/^'[^']*'(\s+|$)/", '', $attr);
+          break;
+        }
+
+        if (preg_match("%^([^\s\"']+)(\s+|$)%", $attr, $match))
+         # value
+        {
+          $thisval = kses_bad_protocol($match[1], $allowed_protocols);
+
+          $attrarr[] = array
+                        ('name'  => $attrname,
+                         'value' => $thisval,
+                         'whole' => "$attrname=\"$thisval\"",
+                         'vless' => 'n');
+                         # We add quotes to conform to W3C's HTML spec.
+          $working = 1; $mode = 0;
+          $attr = preg_replace("%^[^\s\"']+(\s+|$)%", '', $attr);
+        }
+
+        break;
+    } # switch
+
+    if ($working == 0) # not well formed, remove and try again
+    {
+      $attr = kses_html_error($attr);
+      $mode = 0;
+    }
+  } # while
+
+  if ($mode == 1)
+  # special case, for when the attribute list ends with a valueless
+  # attribute like "selected"
+    $attrarr[] = array
+                  ('name'  => $attrname,
+                   'value' => '',
+                   'whole' => $attrname,
+                   'vless' => 'y');
+
+  return $attrarr;
+} # function kses_hair
+
+
+function kses_check_attr_val($value, $vless, $checkname, $checkvalue)
+###############################################################################
+# This function performs different checks for attribute values. The currently
+# implemented checks are "maxlen", "minlen", "maxval", "minval" and "valueless"
+# with even more checks to come soon.
+###############################################################################
+{
+  $ok = true;
+
+  switch (strtolower($checkname))
+  {
+    case 'maxlen':
+    # The maxlen check makes sure that the attribute value has a length not
+    # greater than the given value. This can be used to avoid Buffer Overflows
+    # in WWW clients and various Internet servers.
+
+      if (strlen($value) > $checkvalue)
+        $ok = false;
+      break;
+
+    case 'minlen':
+    # The minlen check makes sure that the attribute value has a length not
+    # smaller than the given value.
+
+      if (strlen($value) < $checkvalue)
+        $ok = false;
+      break;
+
+    case 'maxval':
+    # The maxval check does two things: it checks that the attribute value is
+    # an integer from 0 and up, without an excessive amount of zeroes or
+    # whitespace (to avoid Buffer Overflows). It also checks that the attribute
+    # value is not greater than the given value.
+    # This check can be used to avoid Denial of Service attacks.
+
+      if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
+        $ok = false;
+      if ($value > $checkvalue)
+        $ok = false;
+      break;
+
+    case 'minval':
+    # The minval check checks that the attribute value is a positive integer,
+    # and that it is not smaller than the given value.
+
+      if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))
+        $ok = false;
+      if ($value < $checkvalue)
+        $ok = false;
+      break;
+
+    case 'valueless':
+    # The valueless check checks if the attribute has a value
+    # (like <a href="blah">) or not (<option selected>). If the given value
+    # is a "y" or a "Y", the attribute must not have a value.
+    # If the given value is an "n" or an "N", the attribute must have one.
+
+      if (strtolower($checkvalue) != $vless)
+        $ok = false;
+      break;
+  } # switch
+
+  return $ok;
+} # function kses_check_attr_val
+
+
+function kses_bad_protocol($string, $allowed_protocols)
+###############################################################################
+# This function removes all non-allowed protocols from the beginning of
+# $string. It ignores whitespace and the case of the letters, and it does
+# understand HTML entities. It does its work in a while loop, so it won't be
+# fooled by a string like "javascript:javascript:alert(57)".
+###############################################################################
+{
+  $string = kses_no_null($string);
+  $string = preg_replace('/\xad+/', '', $string); # deals with Opera "feature"
+  $string2 = $string.'a';
+
+  while ($string != $string2)
+  {
+    $string2 = $string;
+    $string = kses_bad_protocol_once($string, $allowed_protocols);
+  } # while
+
+  return $string;
+} # function kses_bad_protocol
+
+
+function kses_no_null($string)
+###############################################################################
+# This function removes any NULL characters in $string.
+###############################################################################
+{
+  $string = preg_replace('/\0+/', '', $string);
+  $string = preg_replace('/(\\\\0)+/', '', $string);
+
+  return $string;
+} # function kses_no_null
+
+
+function kses_stripslashes($string)
+###############################################################################
+# This function changes the character sequence  \"  to just  "
+# It leaves all other slashes alone. It's really weird, but the quoting from
+# preg_replace(//e) seems to require this.
+###############################################################################
+{
+  return preg_replace('%\\\\"%', '"', $string);
+} # function kses_stripslashes
+
+
+function kses_array_lc($inarray)
+###############################################################################
+# This function goes through an array, and changes the keys to all lower case.
+###############################################################################
+{
+  $outarray = array();
+

+  if (sizeof($inarray))
+  foreach ($inarray as $inkey => $inval)
+  {
+    $outkey = strtolower($inkey);
+    $outarray[$outkey] = array();
+
+    foreach ($inval as $inkey2 => $inval2)
+    {
+      $outkey2 = strtolower($inkey2);
+      $outarray[$outkey][$outkey2] = $inval2;
+    } # foreach $inval
+  } # foreach $inarray
+
+  return $outarray;
+} # function kses_array_lc
+
+
+function kses_js_entities($string)
+###############################################################################
+# This function removes the HTML JavaScript entities found in early versions of
+# Netscape 4.
+###############################################################################
+{
+  return preg_replace('%&\s*\{[^}]*(\}\s*;?|$)%', '', $string);
+} # function kses_js_entities
+
+
+function kses_html_error($string)
+###############################################################################
+# This function deals with parsing errors in kses_hair(). The general plan is
+# to remove everything to and including some whitespace, but it deals with
+# quotes and apostrophes as well.
+###############################################################################
+{
+  return preg_replace('/^("[^"]*("|$)|\'[^\']*(\'|$)|\S)*\s*/', '', $string);
+} # function kses_html_error
+
+
+function kses_bad_protocol_once($string, $allowed_protocols)
+###############################################################################
+# This function searches for URL protocols at the beginning of $string, while
+# handling whitespace and HTML entities.
+###############################################################################
+{
+  return preg_replace('/^((&[^;]*;|[\sA-Za-z0-9])*)'.
+                      '(:|&#58;|&#[Xx]3[Aa];)\s*/e',
+                      'kses_bad_protocol_once2("\\1", $allowed_protocols)',
+                      $string);
+} # function kses_bad_protocol_once
+
+
+function kses_bad_protocol_once2($string, $allowed_protocols)
+###############################################################################
+# This function processes URL protocols, checks to see if they're in the white-
+# list or not, and returns different data depending on the answer.
+###############################################################################
+{
+  $string2 = kses_decode_entities($string);
+  $string2 = preg_replace('/\s/', '', $string2);
+  $string2 = kses_no_null($string2);
+  $string2 = preg_replace('/\xad+/', '', $string2);
+   # deals with Opera "feature"
+  $string2 = strtolower($string2);
+
+  $allowed = false;
+  foreach ($allowed_protocols as $one_protocol)
+    if (strtolower($one_protocol) == $string2)
+    {
+      $allowed = true;
+      break;
+    }
+
+  if ($allowed)
+    return "$string2:";
+  else
+    return '';
+} # function kses_bad_protocol_once2
+
+
+function kses_normalize_entities($string)
+###############################################################################
+# This function normalizes HTML entities. It will convert "AT&T" to the correct
+# "AT&amp;T", "&#00058;" to "&#58;", "&#XYZZY;" to "&amp;#XYZZY;" and so on.
+###############################################################################
+{
+# Disarm all entities by converting & to &amp;
+
+  // $string = str_replace('&', '&amp;', $string); // [Marcus Povey 20090212: Commented out in ref #561. Needs a better solution. ]
+
+# Change back the allowed entities in our entity whitelist
+
+  $string = preg_replace('/&amp;([A-Za-z][A-Za-z0-9]{0,19});/',
+                         '&\\1;', $string);
+  $string = preg_replace('/&amp;#0*([0-9]{1,5});/e',
+                         'kses_normalize_entities2("\\1")', $string);
+  $string = preg_replace('/&amp;#([Xx])0*(([0-9A-Fa-f]{2}){1,2});/',
+                         '&#\\1\\2;', $string);
+
+  return $string;
+} # function kses_normalize_entities
+
+
+function kses_normalize_entities2($i)
+###############################################################################
+# This function helps kses_normalize_entities() to only accept 16 bit values
+# and nothing more for &#number; entities.
+###############################################################################
+{
+  return (($i > 65535) ? "&amp;#$i;" : "&#$i;");
+} # function kses_normalize_entities2
+
+
+function kses_decode_entities($string)
+###############################################################################
+# This function decodes numeric HTML entities (&#65; and &#x41;). It doesn't
+# do anything with other entities like &auml;, but we don't need them in the
+# URL protocol whitelisting system anyway.
+###############################################################################
+{
+  $string = preg_replace('/&#([0-9]+);/e', 'chr("\\1")', $string);
+  $string = preg_replace('/&#[Xx]([0-9A-Fa-f]+);/e', 'chr(hexdec("\\1"))',
+                         $string);
+
+  return $string;
+} # function kses_decode_entities
+
+?>
diff --git a/mod/kses/vendors/kses/oop/oop.kses.changelog.txt b/mod/kses/vendors/kses/oop/oop.kses.changelog.txt
new file mode 100644
index 000000000..a82daf4fe
--- /dev/null
+++ b/mod/kses/vendors/kses/oop/oop.kses.changelog.txt
@@ -0,0 +1,204 @@
+kses ChangeLog

+==============

+

+KSES5

+	* 1.0.2

+KSES4

+	* 0.2.2

+	- Folded in code from kses 0.2.2.

+

+KSES5

+	* 1.0.1rc

+KSES4

+	* 0.2.2rc

+	- Added SetProtocols() to make protocol replacement a single step

+	  to fully answer concerns in bug #892477

+	  

+KSES5

+	* 1.0.0

+	- Turned many methods private

+	

+	- Now using __construct default constructor

+	

+	- Only runs in PHP5 or better

+	

+	- All method names changed to reflect verb status

+	

+	- Folded sinlge line functions into calling methods

+	

+	- Deprecated _hook(), Protocols()

+	

+	- Added AddProtocols() to replace Protocols()

+	

+	- Added filterKsesTextHook() to replace _hook()

+	

+	- Added RemoveProtocol() and RemoveProtocols() to remove protocols

+	  singly, or batch.  This should clear bug #892477

+

+	- Version number is 1.0.0

+

+KSES4

+	* 0.2.1

+	- Synced version number to procedural code

+	

+	- Deprecated _hook(), Protocols()

+	

+	- Added AddProtocols() to replace Protocols()

+	

+	- Added filterKsesTextHook() to replace _hook()

+	

+	- Added RemoveProtocol() and RemoveProtocols() to remove protocols singly,

+	  or batch.  This should clear bug #892477

+

+OOP

+	- Forked code into PHP4 and PHP5 versions.  Use '$myKses = new kses[45]'

+	  from now on.

+	

+	- Modified code to run in E_STRICT.  This should clear bug #918493

+	

+	- Added phpDoc commenting

+

+OOP

+	* 0.0.2

+	- Fixed a bug in AddProtocol that wasn't adding new protocols to

+	  $this->allowed_protocols

+

+	- Modified internal methods to correspond to kses 0.2.1 modifications.

+

+	- Created a basic test suite that can be run via web or CLI.

+

+	- Started CVSing the code.

+

+OOP

+	* 0.0.1

+	- Turned all the kses_function_name functions to _function_name methods.

+

+	- Added a couple of properties (allowed_protocols, allowed_html) with

+	  $this->allowed_protocols defaulting to the lion's share of usual

+	  protocols.

+

+	- Modified the applicable use of preg_replace() functions to point to

+	  internal class methods.

+

+	- Reduced the parameter list of some methods since internal properties

+	  are now being used.

+

+	- Added "public" methods to set up the allowed protocols and HTML.

+

+Procedural

+	* 0.2.1

+

+	0.2.1 was released on the 29th of September 2003.

+	It has the following changes:

+

+	- There is now an additional version of kses, using the object-oriented

+	  paradigm. Thanks a lot to Richard R. Vasquez, Jr., who created it!

+	  Anyone who wants to make functional programming, logical programming or

+	  spaghetti programming versions of kses as well (or any other programming

+	  paradigm that you like), go ahead! All the people who like old

+	  procedural programming for web applications shouldn't despair, though,

+	  as both versions will be maintained with each release.

+

+	- kses now has some new attribute value checks: minlen, minval and

+	  valueless.  See docs/attribute-value-checks for an explanation.

+

+	- For some reason, the Opera developers decided to make chr(173) a

+	  whitespace character in URL protocols, both when it occurs raw and in an

+	  entity. kses now handles this.

+

+	- The URL protocol whitelisting system now decodes entities before

+	  removing NULLs and whitespaces.

+

+Procedural

+	* 0.2.0

+

+	0.2.0 was released on the 25th of July 2003.

+	It has the following changes:

+

+	- kses now supports checking of attribute values, and not just element

+	  names and attribute names. The attribute value checks that exist so far

+	  are 'maxlen' (checks how long attribute values are, to avoid Buffer

+	  Overflows) and 'maxval' (checks how big an integer value is, to avoid

+	  Denial of Service attacks).

+

+	  Buffer Overflows could both be a problem for WWW clients and different

+	  servers on the Internet that an HTML document links to. One example is

+	  <frame src="ftp://ftp.v1ct1m.com/AAAAAA..thousands_of_A's...">.

+

+	  Denial of Service attacks can take the form of too big sizes of iframes

+	  or other things. One example is <iframe src="http://some.web.server/"

+	  width="20000" height="2000">, which makes some client machines

+	  completely overloaded.

+

+	- kses' old feature of removing "javascript:" from attribute values has

+	  been improved. It now has a whole system for white listing of URL

+	  protocols, so you can specify that it's acceptable with http:, https:,

+	  ftp: and gopher:, but no other protocols in attribute values. The system

+	  tries pretty hard to do the right thing with whitespace, upper/lower

+	  case, HTML entities ("jav&#97;script:") and repeated entries

+	  ("javascript:javascript:alert(57)").

+

+	- kses now supports both HTML and XHTML code, by allowing " /" at the end

+	  of tags.

+

+	- kses now removes Netscape 4's JavaScript entities, having the form

+	  "&{alert(57)};". They don't even seem to work on all versions of

+	  Netscape 4, but for completeness' sake it seemed like a good feature to

+	  add.

+

+	- A bug with NULLs in javascript: URLs was fixed.

+	  (Reported by Simon Cornelius P. Umacob - thanks!)

+

+	- As a nice side effect of the white listing of URL protocols, kses now

+	  also normalizes all HTML entities in documents. It will change HTML code

+	  with bad entities to the right form, for example "AT&T" will be

+	  converted to "AT&amp;T" and "<a href='lyrics.php?band=ladytron&lyrics=

+	  playgirl'>" will be converted to "<a href='lyrics.php?band=

+	  ladytron&amp;lyrics=playgirl'>". "&#000058;" will be converted to

+	  "&#58;", "&#XYZZY;" will be converted to "&amp;#XYZZY;", "&auml!;" will

+	  be converted to "&amp;auml!;" and so on.

+

+	  As shown above, it will process HTML entities that it doesn't

+	  understand.  It will also deal with too big numbers in numeric HTML

+	  entities, which is helpful as many browsers seem to wrap them around at

+	  2 ** 32, so the characters 58, 58 + (2 ** 32), 58 + (2 ** 64) etcetera

+	  are all colons to the web browser.

+

+	- You can now use upper case letters in your $allowed_html array, in

+	  element names, attribute names and attribute value check names. Version

+	  0.1.0 required everything in that array to be in lower case, but that's

+	  not necessary any more. You can also use upper case letters in

+	  $allowed_protocols.

+

+	- The "Really malformed thing" bug from the TODO file was fixed.

+	  It used to convert this string:

+	  x > 5 <a href="blah">

+	  to:

+	  x &gt; 5 &lt;a href=&quot;blah&quot;&gt;

+	  and now it converts it to:

+	  x &gt; 5 <a href="blah">

+

+	- The "Weird malformed thing" bug from the TODO file was fixed.

+	  It used to convert this string:

+	  <a href="5 href=6>

+	  to:

+	  <a href="6">

+	  because of the way kses restarts after a parse error in kses_hair().

+	  Now it converts it to:

+	  <a>

+

+	- A problem with slashes in HTML tags was fixed.

+

+	- examples/filter.php used to use $SCRIPT_NAME, which doesn't work on

+	  Windows.

+	  (Reported by Simon Cornelius P. Umacob - thanks!)

+

+	- kses now allows dashes in attribute names, for things like

+	  <meta http-equiv=..>.

+

+Procedural

+	* 0.1.0, first public version

+

+	0.1.0 was released on the 9th of June 2003.

+	It was announced on three security related mailing lists on Friday the

+	13th of June (nothing bad happened to it though).

diff --git a/mod/kses/vendors/kses/oop/oop.simple.api.txt b/mod/kses/vendors/kses/oop/oop.simple.api.txt
new file mode 100644
index 000000000..144308a93
--- /dev/null
+++ b/mod/kses/vendors/kses/oop/oop.simple.api.txt
@@ -0,0 +1,58 @@
+Parse($string = "")

+	The basic function of kses.  Give it a $string, and it will strip

+	out the unwanted HTML and attributes.

+

+AddProtocols()

+	Add a protocol or list of protocols to the kses object to be

+	considered valid during a Parse().  The parameter can be a string

+	containing a single protocol, or an array of strings, each

+	containing a single protocol.

+

+Protocols()

+	Deprecated.  Use AddProtocols()

+

+AddProtocol($protocol = "")

+	Adds a single protocol to the kses object that will be considered

+	valid during a Parse().

+

+SetProtocols()

+	This is a straight setting/overwrite of existing protocols in the

+	kses object.  All existing protocols are removed, and the parameter

+	is used to determine what protocol(s) the kses object will consider

+	valid.  The parameter can be a string containing a single protocol,

+	or an array of strings, each constaining a single protocol.

+

+DumpProtocols()

+	This returns an indexed array of the valid protocols contained in

+	the kses object.

+

+DumpElements()

+	This returns an associative array of the valid (X)HTML elements in

+	the kses object along with attributes for each element, and tests

+	that will be performed on each attribute.

+

+AddHTML($tag = "", $attribs = array())

+	This allows the end user to add a single (X)HTML element to the

+	kses object along with the (if any) attributes that the specific

+	(X)HTML element is allowed to have.

+	

+	See the file 'attribute-value-checks' for more information as to

+	the format of the data to be provided to this method.

+

+RemoveProtocol($protocol = "")

+	This allows for the removal of a single protocol from the list of

+	valid protocols in the kses object.

+

+RemoveProtocols()

+	This allows for the single or batch removal of protocols from the

+	kses object.  The parameter is either a string containing a

+	protocol to be removed, or an array of strings that each contain

+	a protocol.

+

+filterKsesTextHook($string)

+	For the OOP version of kses, this is an additional hook that allows

+	the end user to perform additional postprocessing of a string

+	that's being run through Parse().

+

+_hook()

+	Deprecated.  Use filterKsesTextHook().
\ No newline at end of file
diff --git a/mod/kses/vendors/kses/oop/php4.class.kses.php b/mod/kses/vendors/kses/oop/php4.class.kses.php
new file mode 100644
index 000000000..acb06cc59
--- /dev/null
+++ b/mod/kses/vendors/kses/oop/php4.class.kses.php
@@ -0,0 +1,1162 @@
+<?php

+	/*

+	 * ==========================================================================================

+	 *

+	 * This program is free software and open source 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.,

+	 * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  or visit

+	 * http://www.gnu.org/licenses/gpl.html

+	 *

+	 * ==========================================================================================

+	 */

+

+	/**

+	*	Class file for PHP4 OOP version of kses

+	*

+	*	This is an updated version of kses to work with PHP4 that works under E_STRICT.

+	*

+	*	This upgrade provides the following:

+	*	+ Version number synced to procedural version number

+	*	+ PHPdoc style documentation has been added to the class.  See http://www.phpdoc.org/ for more info.

+	*	+ Some methods are now deprecated due to nomenclature style change.  See method documentation for specifics.

+	*	+ Kses4 now works in E_STRICT

+	*	+ Addition of methods AddProtocols(), filterKsestextHook(), RemoveProtocol() and RemoveProtocols()

+	*	+ Deprecated _hook(), Protocols()

+	*	+ Integrated code from kses 0.2.2 into class.

+	*	+ Added methods DumpProtocols(), DumpMethods()

+	*

+	*	@package    kses

+	*	@subpackage kses4

+	*/

+

+	if(substr(phpversion(), 0, 1) < 4)

+	{

+		die("Class kses requires PHP 4 or higher.");

+	}

+

+	/**

+	*	Only install KSES4 once

+	*/

+	if(!defined('KSES_CLASS_PHP4'))

+	{

+		define('KSES_CLASS_PHP4', true);

+

+	/**

+	*	Kses strips evil scripts!

+	*

+	*	This class provides the capability for removing unwanted HTML/XHTML, attributes from

+	*	tags, and protocols contained in links.  The net result is a much more powerful tool

+	*	than the PHP internal strip_tags()

+	*

+	*	This is a fork of a slick piece of procedural code called 'kses' written by Ulf Harnhammar

+	*	The entire set of functions was wrapped in a PHP object with some internal modifications

+	*	by Richard Vasquez (http://www.chaos.org/) 7/25/2003

+	*

+	*	This upgrade provides the following:

+	*	+ Version number synced to procedural version number

+	*	+ PHPdoc style documentation has been added to the class.  See http://www.phpdoc.org/ for more info.

+	*	+ Some methods are now deprecated due to nomenclature style change.  See method documentation for specifics.

+	*	+ Kses4 now works in E_STRICT

+	*	+ Addition of methods AddProtocols(), filterKsestextHook(), RemoveProtocol(), RemoveProtocols() and SetProtocols()

+	*	+ Deprecated _hook(), Protocols()

+	*	+ Integrated code from kses 0.2.2 into class.

+	*

+	*	@author     Richard R. Vásquez, Jr. (Original procedural code by Ulf Härnhammar)

+	*	@link       http://sourceforge.net/projects/kses/ Home Page for Kses

+	*	@link       http://chaos.org/contact/ Contact page with current email address for Richard Vasquez

+	*	@copyright  Richard R. Vásquez, Jr. 2003-2005

+	*	@version    PHP4 OOP 0.2.2

+	*	@license    http://www.gnu.org/licenses/gpl.html GNU Public License

+	*	@package    kses

+	*/

+		class kses4

+		{

+			/**#@+

+			 *	@access private

+			 *	@var array

+			 */

+			var $allowed_protocols = array();

+			var $allowed_html      = array();

+			/**#@-*/

+

+			/**

+			 *	Constructor for kses.

+			 *

+			 *	This sets a default collection of protocols allowed in links, and creates an

+			 *	empty set of allowed HTML tags.

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function kses4()

+			{

+				/**

+				 *	You could add protocols such as ftp, new, gopher, mailto, irc, etc.

+				 *

+				 *	The base values the original kses provided were:

+				 *		'http', 'https', 'ftp', 'news', 'nntp', 'telnet', 'gopher', 'mailto'

+				 */

+				$this->allowed_protocols = array('http', 'ftp', 'mailto');

+				$this->allowed_html      = array();

+			}

+

+			/**

+			 *	Basic task of kses - parses $string and strips it as required.

+			 *

+			 *	This method strips all the disallowed (X)HTML tags, attributes

+			 *	and protocols from the input $string.

+			 *

+			 *	@access public

+			 *	@param string $string String to be stripped of 'evil scripts'

+			 *	@return string The stripped string

+			 *	@since PHP4 OOP 0.2.1

+			 */

+			function Parse($string = "")

+			{

+				if (get_magic_quotes_gpc())

+				{

+					$string = stripslashes($string);

+				}

+				$string = $this->_no_null($string);

+				$string = $this->_js_entities($string);

+				$string = $this->_normalize_entities($string);

+				$string = $this->filterKsesTextHook($string);

+				return    $this->_split($string);

+			}

+

+			/**

+			 *	Allows for single/batch addition of protocols

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	The argument will be processed, and each string will be added

+			 *	via AddProtocol().

+			 *

+			 *	@access public

+			 *	@param mixed , A string or array of protocols that will be added to the internal list of allowed protocols.

+			 *	@return bool Status of adding valid protocols.

+			 *	@see AddProtocol()

+			 *	@since PHP4 OOP 0.2.1

+			 */

+			function AddProtocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					trigger_error("kses4::AddProtocols() did not receive an argument.", E_USER_WARNING);

+					return false;

+				}

+

+				$protocol_data = func_get_arg(0);

+

+				if(is_array($protocol_data) && count($protocol_data) > 0)

+				{

+					foreach($protocol_data as $protocol)

+					{

+						$this->AddProtocol($protocol);

+					}

+					return true;

+				}

+				elseif(is_string($protocol_data))

+				{

+					$this->AddProtocol($protocol_data);

+					return true;

+				}

+				else

+				{

+					trigger_error("kses4::AddProtocols() did not receive a string or an array.", E_USER_WARNING);

+					return false;

+				}

+			}

+

+			/**

+			 *	Allows for single/batch addition of protocols

+			 *

+			 *	@deprecated Use AddProtocols()

+			 *	@see AddProtocols()

+			 *	@return bool

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function Protocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					trigger_error("kses4::Protocols() did not receive an argument.", E_USER_WARNING);

+					return false;

+				}

+

+				return $this->AddProtocols(func_get_arg(0));

+			}

+

+			/**

+			 *	Adds a single protocol to $this->allowed_protocols.

+			 *

+			 *	This method accepts a string argument and adds it to

+			 *	the list of allowed protocols to keep when performing

+			 *	Parse().

+			 *

+			 *	@access public

+			 *	@param string $protocol The name of the protocol to be added.

+			 *	@return bool Status of adding valid protocol.

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function AddProtocol($protocol = "")

+			{

+				if(!is_string($protocol))

+				{

+					trigger_error("kses4::AddProtocol() requires a string.", E_USER_WARNING);

+					return false;

+				}

+

+				$protocol = strtolower(trim($protocol));

+				if($protocol == "")

+				{

+					trigger_error("kses4::AddProtocol() tried to add an empty/NULL protocol.", E_USER_WARNING);

+					return false;

+				}

+

+				// Remove any inadvertent ':' at the end of the protocol.

+				if(substr($protocol, strlen($protocol) - 1, 1) == ":")

+				{

+					$protocol = substr($protocol, 0, strlen($protocol) - 1);

+				}

+

+				if(!in_array($protocol, $this->allowed_protocols))

+				{

+					array_push($this->allowed_protocols, $protocol);

+					sort($this->allowed_protocols);

+				}

+				return true;

+			}

+

+			/**

+			 *	Allows for single/batch replacement of protocols

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	Existing protocols will be removed, then the argument will be

+			 *	processed, and each string will be added via AddProtocol().

+			 *

+			 *	@access public

+			 *	@param mixed , A string or array of protocols that will be the new internal list of allowed protocols.

+			 *	@return bool Status of replacing valid protocols.

+			 *	@since PHP4 OOP 0.2.2

+			 *	@see AddProtocol()

+			 */

+			function SetProtocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					trigger_error("kses4::SetProtocols() did not receive an argument.", E_USER_WARNING);

+					return false;

+				}

+

+				$protocol_data = func_get_arg(0);

+

+				if(is_array($protocol_data) && count($protocol_data) > 0)

+				{

+					$this->allowed_protocols = array();

+					foreach($protocol_data as $protocol)

+					{

+						$this->AddProtocol($protocol);

+					}

+					return true;

+				}

+				elseif(is_string($protocol_data))

+				{

+					$this->allowed_protocols = array();

+					$this->AddProtocol($protocol_data);

+					return true;

+				}

+				else

+				{

+					trigger_error("kses4::SetProtocols() did not receive a string or an array.", E_USER_WARNING);

+					return false;

+				}

+			}

+

+			/**

+			 *	Raw dump of allowed protocols

+			 *

+			 *	This returns an indexed array of allowed protocols for a particular KSES

+			 *	instantiation.

+			 *

+			 *	@access public

+			 *	@return array The list of allowed protocols.

+			 *	@since PHP4 OOP 0.2.2

+			 */

+			function DumpProtocols()

+			{

+				return $this->allowed_protocols;

+			}

+

+			/**

+			 *	Raw dump of allowed (X)HTML elements

+			 *

+			 *	This returns an indexed array of allowed (X)HTML elements and attributes

+			 *	for a particular KSES instantiation.

+			 *

+			 *	@access public

+			 *	@return array The list of allowed elements.

+			 *	@since PHP4 OOP 0.2.2

+			 */

+			function DumpElements()

+			{

+				return $this->allowed_html;

+			}

+

+			/**

+			 *	Adds valid (X)HTML with corresponding attributes that will be kept when stripping 'evil scripts'.

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	@access public

+			 *	@param string $tag (X)HTML tag that will be allowed after stripping text.

+			 *	@param array $attribs Associative array of allowed attributes - key => attribute name - value => attribute parameter

+			 *	@return bool Status of Adding (X)HTML and attributes.

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function AddHTML($tag = "", $attribs = array())

+			{

+				if(!is_string($tag))

+				{

+					trigger_error("kses4::AddHTML() requires the tag to be a string", E_USER_WARNING);

+					return false;

+				}

+

+				$tag = strtolower(trim($tag));

+				if($tag == "")

+				{

+					trigger_error("kses4::AddHTML() tried to add an empty/NULL tag", E_USER_WARNING);

+					return false;

+				}

+

+				if(!is_array($attribs))

+				{

+					trigger_error("kses4::AddHTML() requires an array (even an empty one) of attributes for '$tag'", E_USER_WARNING);

+					return false;

+				}

+

+				$new_attribs = array();

+				if(is_array($attribs) && count($attribs) > 0)

+				{

+					foreach($attribs as $idx1 => $val1)

+					{

+						$new_idx1 = strtolower($idx1);

+						$new_val1 = $attribs[$idx1];

+

+						if(is_array($new_val1) && count($new_val1) > 0)

+						{

+							$tmp_val = array();

+							foreach($new_val1 as $idx2 => $val2)

+							{

+								$new_idx2 = strtolower($idx2);

+								$tmp_val[$new_idx2] = $val2;

+							}

+							$new_val1 = $tmp_val;

+						}

+

+						$new_attribs[$new_idx1] = $new_val1;

+					}

+				}

+

+				$this->allowed_html[$tag] = $new_attribs;

+				return true;

+			}

+

+			/**

+			 *	Removes a single protocol from $this->allowed_protocols.

+			 *

+			 *	This method accepts a string argument and removes it from

+			 *	the list of allowed protocols to keep when performing

+			 *	Parse().

+			 *

+			 *	@access public

+			 *	@param string $protocol The name of the protocol to be removed.

+			 *	@return bool Status of removing valid protocol.

+			 *	@since PHP4 OOP 0.2.1

+			 */

+			function RemoveProtocol($protocol = "")

+			{

+				if(!is_string($protocol))

+				{

+					trigger_error("kses4::RemoveProtocol() requires a string.", E_USER_WARNING);

+					return false;

+				}

+

+				// Remove any inadvertent ':' at the end of the protocol.

+				if(substr($protocol, strlen($protocol) - 1, 1) == ":")

+				{

+					$protocol = substr($protocol, 0, strlen($protocol) - 1);

+				}

+

+				$protocol = strtolower(trim($protocol));

+				if($protocol == "")

+				{

+					trigger_error("kses4::RemoveProtocol() tried to remove an empty/NULL protocol.", E_USER_WARNING);

+					return false;

+				}

+

+				//	Ensures that the protocol exists before removing it.

+				if(in_array($protocol, $this->allowed_protocols))

+				{

+					$this->allowed_protocols = array_diff($this->allowed_protocols, array($protocol));

+					sort($this->allowed_protocols);

+				}

+

+				return true;

+			}

+

+			/**

+			 *	Allows for single/batch removal of protocols

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	The argument will be processed, and each string will be removed

+			 *	via RemoveProtocol().

+			 *

+			 *	@access public

+			 *	@param mixed , A string or array of protocols that will be removed from the internal list of allowed protocols.

+			 *	@return bool Status of removing valid protocols.

+			 *	@see RemoveProtocol()

+			 *	@since PHP5 OOP 0.2.1

+			 */

+			function RemoveProtocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					return false;

+				}

+

+				$protocol_data = func_get_arg(0);

+

+				if(is_array($protocol_data) && count($protocol_data) > 0)

+				{

+					foreach($protocol_data as $protocol)

+					{

+						$this->RemoveProtocol($protocol);

+					}

+				}

+				elseif(is_string($protocol_data))

+				{

+					$this->RemoveProtocol($protocol_data);

+					return true;

+				}

+				else

+				{

+					trigger_error("kses4::RemoveProtocols() did not receive a string or an array.", E_USER_WARNING);

+					return false;

+				}

+			}

+

+			/**

+			 *	This method removes any NULL or characters in $string.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string String without any NULL/chr(173)

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _no_null($string)

+			{

+				$string = preg_replace('/\0+/', '', $string);

+				$string = preg_replace('/(\\\\0)+/', '', $string);

+				return $string;

+			}

+

+			/**

+			 *	This function removes the HTML JavaScript entities found in early versions of

+			 *	Netscape 4.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string String without any NULL/chr(173)

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _js_entities($string)

+			{

+			  return preg_replace('%&\s*\{[^}]*(\}\s*;?|$)%', '', $string);

+			}

+

+			/**

+			 *	Normalizes HTML entities

+			 *

+			 *	This function normalizes HTML entities. It will convert "AT&T" to the correct

+			 *	"AT&amp;T", "&#00058;" to "&#58;", "&#XYZZY;" to "&amp;#XYZZY;" and so on.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string String with normalized entities

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _normalize_entities($string)

+			{

+				# Disarm all entities by converting & to &amp;

+			  $string = str_replace('&', '&amp;', $string);

+

+				# Change back the allowed entities in our entity white list

+

+			  $string = preg_replace('/&amp;([A-Za-z][A-Za-z0-9]{0,19});/', '&\\1;', $string);

+			  $string = preg_replace('/&amp;#0*([0-9]{1,5});/e', '\$this->_normalize_entities2("\\1")', $string);

+			  $string = preg_replace('/&amp;#([Xx])0*(([0-9A-Fa-f]{2}){1,2});/', '&#\\1\\2;', $string);

+

+			  return $string;

+			}

+

+			/**

+			 *	Helper method used by normalizeEntites()

+			 *

+			 *	This method helps normalizeEntities() to only accept 16 bit values

+			 *	and nothing more for &#number; entities.

+			 *

+			 *	This method helps normalize_entities() during a preg_replace()

+			 *	where a &#(0)*XXXXX; occurs.  The '(0)*XXXXXX' value is converted to

+			 *	a number and the result is returned as a numeric entity if the number

+			 *	is less than 65536.  Otherwise, the value is returned 'as is'.

+			 *

+			 *	@access private

+			 *	@param string $i

+			 *	@return string Normalized numeric entity

+			 *	@see _normalize_entities()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _normalize_entities2($i)

+			{

+			  return (($i > 65535) ? "&amp;#$i;" : "&#$i;");

+			}

+

+			/**

+			 *	Allows for additional user defined modifications to text.

+			 *

+			 *	@deprecated use filterKsesTextHook()

+			 *	@param string $string

+			 *	@see filterKsesTextHook()

+			 *	@return string

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _hook($string)

+			{

+			  return $this->filterKsesTextHook($string);

+			}

+

+			/**

+			 *	Allows for additional user defined modifications to text.

+			 *

+			 *	This method allows for additional modifications to be performed on

+			 *	a string that's being run through Parse().  Currently, it returns the

+			 *	input string 'as is'.

+			 *

+			 *	This method is provided for users to extend the kses class for their own

+			 *	requirements.

+			 *

+			 *	@access public

+			 *	@param string $string String to perfrom additional modifications on.

+			 *	@return string User modified string.

+			 *	@see Parse()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			function filterKsesTextHook($string)

+			{

+			  return $string;

+			}

+

+			/**

+			 *	This method goes through an array, and changes the keys to all lower case.

+			 *

+			 *	@access private

+			 *	@param array $in_array Associative array

+			 *	@return array Modified array

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _array_lc($inarray)

+			{

+			  $outarray = array();

+

+				if(is_array($inarray) && count($inarray) > 0)

+				{

+					foreach ($inarray as $inkey => $inval)

+					{

+						$outkey = strtolower($inkey);

+						$outarray[$outkey] = array();

+

+						if(is_array($inval) && count($inval) > 0)

+						{

+							foreach ($inval as $inkey2 => $inval2)

+							{

+								$outkey2 = strtolower($inkey2);

+								$outarray[$outkey][$outkey2] = $inval2;

+							}

+						}

+					}

+				}

+

+			  return $outarray;

+			}

+

+			/**

+			 *	This method searched for HTML tags, no matter how malformed.  It also

+			 *	matches stray ">" characters.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string HTML tags

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _split($string)

+			{

+				return preg_replace(

+					'%(<'.   # EITHER: <

+					'[^>]*'. # things that aren't >

+					'(>|$)'. # > or end of string

+					'|>)%e', # OR: just a >

+					"\$this->_split2('\\1')",

+					$string);

+			}

+

+			/**

+			 *	This method strips out disallowed and/or mangled (X)HTML tags along with assigned attributes.

+			 *

+			 *	This method does a lot of work. It rejects some very malformed things

+			 *	like <:::>. It returns an empty string if the element isn't allowed (look

+			 *	ma, no strip_tags()!). Otherwise it splits the tag into an element and an

+			 *	allowed attribute list.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string Modified string minus disallowed/mangled (X)HTML and attributes

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _split2($string)

+			{

+				$string = $this->_stripslashes($string);

+

+				if (substr($string, 0, 1) != '<')

+				{

+					# It matched a ">" character

+					return '&gt;';

+				}

+

+				if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $string, $matches))

+				{

+					# It's seriously malformed

+					return '';

+				}

+

+				$slash    = trim($matches[1]);

+				$elem     = $matches[2];

+				$attrlist = $matches[3];

+

+				if (

+					!isset($this->allowed_html[strtolower($elem)]) ||

+					!is_array($this->allowed_html[strtolower($elem)])

+				)

+				{

+					# They are using a not allowed HTML element

+					return '';

+				}

+

+				if ($slash != '')

+				{

+					return "<$slash$elem>";

+				}

+				# No attributes are allowed for closing elements

+

+				return $this->_attr("$slash$elem", $attrlist);

+			}

+

+			/**

+			 *	This method strips out disallowed attributes for (X)HTML tags.

+			 *

+			 *	This method removes all attributes if none are allowed for this element.

+			 *	If some are allowed it calls $this->_hair() to split them further, and then it

+			 *	builds up new HTML code from the data that $this->_hair() returns. It also

+			 *	removes "<" and ">" characters, if there are any left. One more thing it

+			 *	does is to check if the tag has a closing XHTML slash, and if it does,

+			 *	it puts one in the returned code as well.

+			 *

+			 *	@access private

+			 *	@param string $element (X)HTML tag to check

+			 *	@param string $attr Text containing attributes to check for validity.

+			 *	@return string Resulting valid (X)HTML or ''

+			 *	@see _hair()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _attr($element, $attr)

+			{

+				# Is there a closing XHTML slash at the end of the attributes?

+				$xhtml_slash = '';

+				if (preg_match('%\s/\s*$%', $attr))

+				{

+					$xhtml_slash = ' /';

+				}

+

+				# Are any attributes allowed at all for this element?

+				if (

+					!isset($this->allowed_html[strtolower($element)]) ||

+					count($this->allowed_html[strtolower($element)]) == 0

+				)

+				{

+					return "<$element$xhtml_slash>";

+				}

+

+				# Split it

+				$attrarr = $this->_hair($attr);

+

+				# Go through $attrarr, and save the allowed attributes for this element

+				# in $attr2

+				$attr2 = '';

+				if(is_array($attrarr) && count($attrarr) > 0)

+				{

+					foreach ($attrarr as $arreach)

+					{

+						if(!isset($this->allowed_html[strtolower($element)][strtolower($arreach['name'])]))

+						{

+							continue;

+						}

+

+						$current = $this->allowed_html[strtolower($element)][strtolower($arreach['name'])];

+						if ($current == '')

+						{

+							# the attribute is not allowed

+							continue;

+						}

+

+						if (!is_array($current))

+						{

+							# there are no checks

+							$attr2 .= ' '.$arreach['whole'];

+						}

+						else

+						{

+							# there are some checks

+							$ok = true;

+							if(is_array($current) && count($current) > 0)

+							{

+								foreach ($current as $currkey => $currval)

+								{

+									if (!$this->_check_attr_val($arreach['value'], $arreach['vless'], $currkey, $currval))

+									{

+										$ok = false;

+										break;

+									}

+								}

+

+								if ($ok)

+								{

+									# it passed them

+									$attr2 .= ' '.$arreach['whole'];

+								}

+							}

+						}

+					}

+				}

+

+				# Remove any "<" or ">" characters

+				$attr2 = preg_replace('/[<>]/', '', $attr2);

+				return "<$element$attr2$xhtml_slash>";

+			}

+

+			/**

+			 *	This method combs through an attribute list string and returns an associative array of attributes and values.

+			 *

+			 *	This method does a lot of work. It parses an attribute list into an array

+			 *	with attribute data, and tries to do the right thing even if it gets weird

+			 *	input. It will add quotes around attribute values that don't have any quotes

+			 *	or apostrophes around them, to make it easier to produce HTML code that will

+			 *	conform to W3C's HTML specification. It will also remove bad URL protocols

+			 *	from attribute values.

+			 *

+			 *	@access private

+			 *	@param string $attr Text containing tag attributes for parsing

+			 *	@return array Associative array containing data on attribute and value

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _hair($attr)

+			{

+				$attrarr  = array();

+				$mode     = 0;

+				$attrname = '';

+

+				# Loop through the whole attribute list

+

+				while (strlen($attr) != 0)

+				{

+					# Was the last operation successful?

+					$working = 0;

+

+					switch ($mode)

+					{

+						case 0:	# attribute name, href for instance

+							if (preg_match('/^([-a-zA-Z]+)/', $attr, $match))

+							{

+								$attrname = $match[1];

+								$working = $mode = 1;

+								$attr = preg_replace('/^[-a-zA-Z]+/', '', $attr);

+							}

+							break;

+						case 1:	# equals sign or valueless ("selected")

+							if (preg_match('/^\s*=\s*/', $attr)) # equals sign

+							{

+								$working = 1;

+								$mode    = 2;

+								$attr    = preg_replace('/^\s*=\s*/', '', $attr);

+								break;

+							}

+							if (preg_match('/^\s+/', $attr)) # valueless

+							{

+								$working   = 1;

+								$mode      = 0;

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => '',

+									'whole' => $attrname,

+									'vless' => 'y'

+								);

+								$attr      = preg_replace('/^\s+/', '', $attr);

+							}

+							break;

+						case 2: # attribute value, a URL after href= for instance

+							if (preg_match('/^"([^"]*)"(\s+|$)/', $attr, $match)) # "value"

+							{

+								$thisval   = $this->_bad_protocol($match[1]);

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => $thisval,

+									'whole' => "$attrname=\"$thisval\"",

+									'vless' => 'n'

+								);

+								$working   = 1;

+								$mode      = 0;

+								$attr      = preg_replace('/^"[^"]*"(\s+|$)/', '', $attr);

+								break;

+							}

+							if (preg_match("/^'([^']*)'(\s+|$)/", $attr, $match)) # 'value'

+							{

+								$thisval   = $this->_bad_protocol($match[1]);

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => $thisval,

+									'whole' => "$attrname='$thisval'",

+									'vless' => 'n'

+								);

+								$working   = 1;

+								$mode      = 0;

+								$attr      = preg_replace("/^'[^']*'(\s+|$)/", '', $attr);

+								break;

+							}

+							if (preg_match("%^([^\s\"']+)(\s+|$)%", $attr, $match)) # value

+							{

+								$thisval   = $this->_bad_protocol($match[1]);

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => $thisval,

+									'whole' => "$attrname=\"$thisval\"",

+									'vless' => 'n'

+								);

+								# We add quotes to conform to W3C's HTML spec.

+								$working   = 1;

+								$mode      = 0;

+								$attr      = preg_replace("%^[^\s\"']+(\s+|$)%", '', $attr);

+							}

+							break;

+					}

+

+					if ($working == 0) # not well formed, remove and try again

+					{

+						$attr = $this->_html_error($attr);

+						$mode = 0;

+					}

+				}

+

+				# special case, for when the attribute list ends with a valueless

+				# attribute like "selected"

+				if ($mode == 1)

+				{

+					$attrarr[] = array(

+						'name'  => $attrname,

+						'value' => '',

+						'whole' => $attrname,

+						'vless' => 'y'

+					);

+				}

+

+				return $attrarr;

+			}

+

+			/**

+			 *	This method removes disallowed protocols.

+			 *

+			 *	This method removes all non-allowed protocols from the beginning of

+			 *	$string. It ignores whitespace and the case of the letters, and it does

+			 *	understand HTML entities. It does its work in a while loop, so it won't be

+			 *	fooled by a string like "javascript:javascript:alert(57)".

+			 *

+			 *	@access private

+			 *	@param string $string String to check for protocols

+			 *	@return string String with removed protocols

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _bad_protocol($string)

+			{

+				$string  = $this->_no_null($string);

+				$string = preg_replace('/\xad+/', '', $string); # deals with Opera "feature"

+				$string2 = $string.'a';

+

+				while ($string != $string2)

+				{

+					$string2 = $string;

+					$string  = $this->_bad_protocol_once($string);

+				} # while

+

+				return $string;

+			}

+

+			/**

+			 *	Helper method used by _bad_protocol()

+			 *

+			 *	This function searches for URL protocols at the beginning of $string, while

+			 *	handling whitespace and HTML entities.

+			 *

+			 *	@access private

+			 *	@param string $string String to check for protocols

+			 *	@return string String with removed protocols

+			 *	@see _bad_protocol()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _bad_protocol_once($string)

+			{

+				return preg_replace(

+					'/^((&[^;]*;|[\sA-Za-z0-9])*)'.

+					'(:|&#58;|&#[Xx]3[Aa];)\s*/e',

+					'\$this->_bad_protocol_once2("\\1")',

+					$string

+				);

+			}

+

+			/**

+			 *	Helper method used by _bad_protocol_once() regex

+			 *

+			 *	This function processes URL protocols, checks to see if they're in the white-

+			 *	list or not, and returns different data depending on the answer.

+			 *

+			 *	@access private

+			 *	@param string $string String to check for protocols

+			 *	@return string String with removed protocols

+			 *	@see _bad_protocol()

+			 *	@see _bad_protocol_once()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _bad_protocol_once2($string)

+			{

+				$string = $this->_decode_entities($string);

+				$string = preg_replace('/\s/', '', $string);

+				$string = $this->_no_null($string);

+				$string = preg_replace('/\xad+/', '', $string); # deals with Opera "feature"

+				$string = strtolower($string);

+

+				$allowed = false;

+				if(is_array($this->allowed_protocols) && count($this->allowed_protocols) > 0)

+				{

+					foreach ($this->allowed_protocols as $one_protocol)

+					{

+						if (strtolower($one_protocol) == $string)

+						{

+							$allowed = true;

+							break;

+						}

+					}

+				}

+

+				if ($allowed)

+				{

+					return "$string:";

+				}

+				else

+				{

+					return '';

+				}

+			}

+

+			/**

+			 *	This function performs different checks for attribute values.

+			 *

+			 *	The currently implemented checks are "maxlen", "minlen", "maxval",

+			 *	"minval" and "valueless" with even more checks to come soon.

+			 *

+			 *	@access private

+			 *	@param string $value The value of the attribute to be checked.

+			 *	@param string $vless Indicates whether the the value is supposed to be valueless

+			 *	@param string $checkname The check to be performed

+			 *	@param string $checkvalue The value that is to be checked against

+			 *	@return bool Indicates whether the check passed or not

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _check_attr_val($value, $vless, $checkname, $checkvalue)

+			{

+				$ok = true;

+

+				switch (strtolower($checkname))

+				{

+					/**

+					*	The maxlen check makes sure that the attribute value has a length not

+					*	greater than the given value. This can be used to avoid Buffer Overflows

+					*	in WWW clients and various Internet servers.

+					*/

+					case 'maxlen':

+						if (strlen($value) > $checkvalue)

+						{

+							$ok = false;

+						}

+						break;

+

+					/**

+					*	The minlen check makes sure that the attribute value has a length not

+					*	smaller than the given value.

+					*/

+					case 'minlen':

+						if (strlen($value) < $checkvalue)

+						{

+							$ok = false;

+						}

+						break;

+

+					/**

+					*	The maxval check does two things: it checks that the attribute value is

+					*	an integer from 0 and up, without an excessive amount of zeroes or

+					*	whitespace (to avoid Buffer Overflows). It also checks that the attribute

+					*	value is not greater than the given value.

+					*	This check can be used to avoid Denial of Service attacks.

+					*/

+					case 'maxval':

+						if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))

+						{

+							$ok = false;

+						}

+						if ($value > $checkvalue)

+						{

+							$ok = false;

+						}

+						break;

+

+					/**

+					*	The minval check checks that the attribute value is a positive integer,

+					*	and that it is not smaller than the given value.

+					*/

+					case 'minval':

+						if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))

+						{

+							$ok = false;

+						}

+						if ($value < $checkvalue)

+						{

+							$ok = false;

+						}

+						break;

+

+					/**

+					*	The valueless check checks if the attribute has a value

+					*	(like <a href="blah">) or not (<option selected>). If the given value

+					*	is a "y" or a "Y", the attribute must not have a value.

+					*	If the given value is an "n" or an "N", the attribute must have one.

+					*/

+					case 'valueless':

+					if (strtolower($checkvalue) != $vless)

+					{

+						$ok = false;

+					}

+					break;

+

+				}

+

+				return $ok;

+			}

+

+			/**

+			 *	Changes \" to "

+			 *

+			 *	This function changes the character sequence  \"  to just  "

+			 *	It leaves all other slashes alone. It's really weird, but the quoting from

+			 *	preg_replace(//e) seems to require this.

+			 *

+			 *	@access private

+			 *	@param string $string The string to be stripped.

+			 *	@return string string stripped of \"

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _stripslashes($string)

+			{

+				return preg_replace('%\\\\"%', '"', $string);

+			}

+

+			/**

+			 *	helper method for _hair()

+			 *

+			 *	This function deals with parsing errors in _hair(). The general plan is

+			 *	to remove everything to and including some whitespace, but it deals with

+			 *	quotes and apostrophes as well.

+			 *

+			 *	@access private

+			 *	@param string $string The string to be stripped.

+			 *	@return string string stripped of whitespace

+			 *	@see _hair()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _html_error($string)

+			{

+				return preg_replace('/^("[^"]*("|$)|\'[^\']*(\'|$)|\S)*\s*/', '', $string);

+			}

+

+			/**

+			 *	Decodes numeric HTML entities

+			 *

+			 *	This method decodes numeric HTML entities (&#65; and &#x41;). It doesn't

+			 *	do anything with other entities like &auml;, but we don't need them in the

+			 *	URL protocol white listing system anyway.

+			 *

+			 *	@access private

+			 *	@param string $value The entitiy to be decoded.

+			 *	@return string Decoded entity

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _decode_entities($string)

+			{

+				$string = preg_replace('/&#([0-9]+);/e', 'chr("\\1")', $string);

+				$string = preg_replace('/&#[Xx]([0-9A-Fa-f]+);/e', 'chr(hexdec("\\1"))', $string);

+				return $string;

+			}

+

+			/**

+			 *	Returns PHP4 OOP version # of kses.

+			 *

+			 *	Since this class has been refactored and documented and proven to work,

+			 *	I'm syncing the version number to procedural kses.

+			 *

+			 *	@access public

+			 *	@return string Version number

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			function _version()

+			{

+				return 'PHP4 0.2.2 (OOP fork of procedural kses 0.2.2)';

+			}

+		}

+

+

+

+	}

+?>
\ No newline at end of file
diff --git a/mod/kses/vendors/kses/oop/php5.class.kses.php b/mod/kses/vendors/kses/oop/php5.class.kses.php
new file mode 100644
index 000000000..541f1bd1e
--- /dev/null
+++ b/mod/kses/vendors/kses/oop/php5.class.kses.php
@@ -0,0 +1,1172 @@
+<?php

+

+	/*

+	 * ==========================================================================================

+	 *

+	 * This program is free software and open source 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.,

+	 * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA  or visit

+	 * http://www.gnu.org/licenses/gpl.html

+	 *

+	 * ==========================================================================================

+	 */

+

+	/**

+	*	Class file for PHP5 OOP version of kses

+	*

+	*	This is an updated version of kses to work with PHP5 that works under E_STRICT.

+	*

+	*	This version is a bit of a rewrite to match my own coding style and use some of the

+	*	capabilities allowed in PHP5.  Since this was a significant rewrite, but it still

+	*	maintains backward compatibility syntax-wise, the version number is now 1.0.0.  Any

+	*	minor changes that do not break compatibility will be indicated in the second or third

+	*	digits.  Anything that breaks compatibility will change the major version number.

+	*

+	*	PHP5 specific changes:

+	*	+ Private methods are now in place

+	*	+ __construct() is now used rather then the standard class name 'kses()'

+	*	+ Kses will not load in any version less that PHP5

+	*	Other modifications:

+	*	+ PHPdoc style documentation has been added to the class.  See http://www.phpdoc.org/ for more info.

+	*	+ Method names have been changed to reflect status as verbs

+	*	+ One line methods have been folded into the code

+	*	+ Some methods are now deprecated due to nomenclature style change.  See method documentation for specifics.

+	*	+ Kses5 now works in E_STRICT

+	*	+ Version number is 1.0.0 to reflect serious code changes

+	*	+ Addition of methods AddProtocols(), filterKsestextHook(), RemoveProtocol(), RemoveProtocols() and SetProtocols()

+	*	+ Deprecated _hook(), Protocols()

+	*

+	*	@package    kses

+	*	@subpackage kses5

+	*/

+

+	if(substr(phpversion(), 0, 1) < 5)

+	{

+		die("Class kses requires PHP 5 or higher.");

+	}

+

+	/**

+	*	Only install KSES5 once

+	*/

+	if(!defined('KSES_CLASS_PHP5'))

+	{

+		define('KSES_CLASS_PHP5', true);

+

+	/**

+	*	Kses strips evil scripts!

+	*

+	*	This class provides the capability for removing unwanted HTML/XHTML, attributes from

+	*	tags, and protocols contained in links.  The net result is a much more powerful tool

+	*	than the PHP internal strip_tags()

+	*

+	*	This is a fork of a slick piece of procedural code called 'kses' written by Ulf Harnhammar.

+	*

+	*	The original class for PHP4 was basically a wrapper around all of the functions in

+	*	the procedural code written by Ulf, and was released 7/25/2003.

+	*

+	*	This version is a bit of a rewrite to match my own coding style and use some of the

+	*	capabilities allowed in PHP5.  Since this was a significant rewrite, but it still

+	*	maintains backward compatibility syntax-wise, the version number is now 1.0.0.  Any

+	*	minor changes that do not break compatibility will be indicated in the second or third

+	*	digits.  Anything that breaks compatibility will change the major version number.

+	*

+	*	PHP5 specific changes:

+	*	+ Private methods are now in place

+	*	+ __construct() is now used rather then the standard class name 'kses()'

+	*	+ Kses5 will not load in any version less that PHP5

+	*	Other modifications:

+	*	+ PHPdoc style documentation has been added to the class.  See http://www.phpdoc.org/ for more info.

+	*	+ Method names have been changed to reflect status as verbs

+	*	+ One line methods have been folded into the code

+	*	+ Some methods are now deprecated due to nomenclature style change.  See method documentation for specifics.

+	*	+ Kses now works in E_STRICT

+	*	+ Initial Version number set to 1.0.0 to reflect serious code changes

+	*	+ Addition of methods AddProtocols(), filterKsestextHook(), RemoveProtocol(), RemoveProtocols() and SetProtocols()

+	*	+ Deprecated _hook(), Protocols()

+	*	+ Integrated code from kses 0.2.2 into class.

+	*	+ Added methods DumpProtocols(), DumpMethods()

+	*

+	*	@author     Richard R. Vásquez, Jr. (Original procedural code by Ulf Härnhammar)

+	*	@link       http://sourceforge.net/projects/kses/ Home Page for Kses

+	*	@link       http://chaos.org/contact/ Contact page with current email address for Richard Vasquez

+	*	@copyright  Richard R. Vásquez, Jr. 2005

+	*	@version    PHP5 OOP 1.0.2

+	*	@license    http://www.gnu.org/licenses/gpl.html GNU Public License

+	*	@package    kses

+	*/

+		class kses5

+		{

+			/**#@+

+			 *	@access private

+			 *	@var array

+			 */

+			private $allowed_protocols;

+			private $allowed_html;

+			/**#@-*/

+

+			/**

+			 *	Constructor for kses.

+			 *

+			 *	This sets a default collection of protocols allowed in links, and creates an

+			 *	empty set of allowed HTML tags.

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			public function __construct()

+			{

+				/**

+				 *	You could add protocols such as ftp, new, gopher, mailto, irc, etc.

+				 *

+				 *	The base values the original kses provided were:

+				 *		'http', 'https', 'ftp', 'news', 'nntp', 'telnet', 'gopher', 'mailto'

+				 */

+				$this->allowed_protocols = array('http', 'ftp', 'mailto');

+				$this->allowed_html      = array();

+			}

+

+			/**

+			 *	Basic task of kses - parses $string and strips it as required.

+			 *

+			 *	This method strips all the disallowed (X)HTML tags, attributes

+			 *	and protocols from the input $string.

+			 *

+			 *	@access public

+			 *	@param string $string String to be stripped of 'evil scripts'

+			 *	@return string The stripped string

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			public function Parse($string = "")

+			{

+				if (get_magic_quotes_gpc())

+				{

+					$string = stripslashes($string);

+				}

+				$string = $this->removeNulls($string);

+				//	Remove JavaScript entities from early Netscape 4 versions

+				$string = preg_replace('%&\s*\{[^}]*(\}\s*;?|$)%', '', $string);

+				$string = $this->normalizeEntities($string);

+				$string = $this->filterKsesTextHook($string);

+				$string = preg_replace('%(<' . '[^>]*' . '(>|$)' . '|>)%e', "\$this->stripTags('\\1')", $string);

+				return $string;

+			}

+

+			/**

+			 *	Allows for single/batch addition of protocols

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	The argument will be processed, and each string will be added

+			 *	via AddProtocol().

+			 *

+			 *	@access public

+			 *	@param mixed , A string or array of protocols that will be added to the internal list of allowed protocols.

+			 *	@return bool Status of adding valid protocols.

+			 *	@see AddProtocol()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			public function AddProtocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					trigger_error("kses5::AddProtocols() did not receive an argument.", E_USER_WARNING);

+					return false;

+				}

+

+				$protocol_data = func_get_arg(0);

+

+				if(is_array($protocol_data) && count($protocol_data) > 0)

+				{

+					foreach($protocol_data as $protocol)

+					{

+						$this->AddProtocol($protocol);

+					}

+					return true;

+				}

+				elseif(is_string($protocol_data))

+				{

+					$this->AddProtocol($protocol_data);

+					return true;

+				}

+				else

+				{

+					trigger_error("kses5::AddProtocols() did not receive a string or an array.", E_USER_WARNING);

+					return false;

+				}

+			}

+

+			/**

+			 *	Allows for single/batch addition of protocols

+			 *

+			 *	@deprecated Use AddProtocols()

+			 *	@see AddProtocols()

+			 *	@return bool

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			public function Protocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					trigger_error("kses5::Protocols() did not receive an argument.", E_USER_WARNING);

+					return false;

+				}

+

+				return $this->AddProtocols(func_get_arg(0));

+			}

+

+			/**

+			 *	Adds a single protocol to $this->allowed_protocols.

+			 *

+			 *	This method accepts a string argument and adds it to

+			 *	the list of allowed protocols to keep when performing

+			 *	Parse().

+			 *

+			 *	@access public

+			 *	@param string $protocol The name of the protocol to be added.

+			 *	@return bool Status of adding valid protocol.

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			public function AddProtocol($protocol = "")

+			{

+				if(!is_string($protocol))

+				{

+					trigger_error("kses5::AddProtocol() requires a string.", E_USER_WARNING);

+					return false;

+				}

+

+				// Remove any inadvertent ':' at the end of the protocol.

+				if(substr($protocol, strlen($protocol) - 1, 1) == ":")

+				{

+					$protocol = substr($protocol, 0, strlen($protocol) - 1);

+				}

+

+				$protocol = strtolower(trim($protocol));

+				if($protocol == "")

+				{

+					trigger_error("kses5::AddProtocol() tried to add an empty/NULL protocol.", E_USER_WARNING);

+					return false;

+				}

+

+				//	prevent duplicate protocols from being added.

+				if(!in_array($protocol, $this->allowed_protocols))

+				{

+					array_push($this->allowed_protocols, $protocol);

+					sort($this->allowed_protocols);

+				}

+				return true;

+			}

+

+			/**

+			 *	Removes a single protocol from $this->allowed_protocols.

+			 *

+			 *	This method accepts a string argument and removes it from

+			 *	the list of allowed protocols to keep when performing

+			 *	Parse().

+			 *

+			 *	@access public

+			 *	@param string $protocol The name of the protocol to be removed.

+			 *	@return bool Status of removing valid protocol.

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			public function RemoveProtocol($protocol = "")

+			{

+				if(!is_string($protocol))

+				{

+					trigger_error("kses5::RemoveProtocol() requires a string.", E_USER_WARNING);

+					return false;

+				}

+

+				// Remove any inadvertent ':' at the end of the protocol.

+				if(substr($protocol, strlen($protocol) - 1, 1) == ":")

+				{

+					$protocol = substr($protocol, 0, strlen($protocol) - 1);

+				}

+

+				$protocol = strtolower(trim($protocol));

+				if($protocol == "")

+				{

+					trigger_error("kses5::RemoveProtocol() tried to remove an empty/NULL protocol.", E_USER_WARNING);

+					return false;

+				}

+

+				//	Ensures that the protocol exists before removing it.

+				if(in_array($protocol, $this->allowed_protocols))

+				{

+					$this->allowed_protocols = array_diff($this->allowed_protocols, array($protocol));

+					sort($this->allowed_protocols);

+				}

+

+				return true;

+			}

+

+			/**

+			 *	Allows for single/batch removal of protocols

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	The argument will be processed, and each string will be removed

+			 *	via RemoveProtocol().

+			 *

+			 *	@access public

+			 *	@param mixed , A string or array of protocols that will be removed from the internal list of allowed protocols.

+			 *	@return bool Status of removing valid protocols.

+			 *	@see RemoveProtocol()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			public function RemoveProtocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					return false;

+				}

+

+				$protocol_data = func_get_arg(0);

+

+				if(is_array($protocol_data) && count($protocol_data) > 0)

+				{

+					foreach($protocol_data as $protocol)

+					{

+						$this->RemoveProtocol($protocol);

+					}

+				}

+				elseif(is_string($protocol_data))

+				{

+					$this->RemoveProtocol($protocol_data);

+					return true;

+				}

+				else

+				{

+					trigger_error("kses5::RemoveProtocols() did not receive a string or an array.", E_USER_WARNING);

+					return false;

+				}

+			}

+

+			/**

+			 *	Allows for single/batch replacement of protocols

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	Existing protocols will be removed, then the argument will be

+			 *	processed, and each string will be added via AddProtocol().

+			 *

+			 *	@access public

+			 *	@param mixed , A string or array of protocols that will be the new internal list of allowed protocols.

+			 *	@return bool Status of replacing valid protocols.

+			 *	@since PHP5 OOP 1.0.1

+			 *	@see AddProtocol()

+			 */

+			public function SetProtocols()

+			{

+				$c_args = func_num_args();

+				if($c_args != 1)

+				{

+					trigger_error("kses5::SetProtocols() did not receive an argument.", E_USER_WARNING);

+					return false;

+				}

+

+				$protocol_data = func_get_arg(0);

+

+				if(is_array($protocol_data) && count($protocol_data) > 0)

+				{

+					$this->allowed_protocols = array();

+					foreach($protocol_data as $protocol)

+					{

+						$this->AddProtocol($protocol);

+					}

+					return true;

+				}

+				elseif(is_string($protocol_data))

+				{

+					$this->allowed_protocols = array();

+					$this->AddProtocol($protocol_data);

+					return true;

+				}

+				else

+				{

+					trigger_error("kses5::SetProtocols() did not receive a string or an array.", E_USER_WARNING);

+					return false;

+				}

+			}

+

+			/**

+			 *	Raw dump of allowed protocols

+			 *

+			 *	This returns an indexed array of allowed protocols for a particular KSES

+			 *	instantiation.

+			 *

+			 *	@access public

+			 *	@return array The list of allowed protocols.

+			 *	@since PHP5 OOP 1.0.2

+			 */

+			public function DumpProtocols()

+			{

+				return $this->allowed_protocols;

+			}

+

+			/**

+			 *	Raw dump of allowed (X)HTML elements

+			 *

+			 *	This returns an indexed array of allowed (X)HTML elements and attributes

+			 *	for a particular KSES instantiation.

+			 *

+			 *	@access public

+			 *	@return array The list of allowed elements.

+			 *	@since PHP5 OOP 1.0.2

+			 */

+			public function DumpElements()

+			{

+				return $this->allowed_html;

+			}

+

+

+			/**

+			 *	Adds valid (X)HTML with corresponding attributes that will be kept when stripping 'evil scripts'.

+			 *

+			 *	This method accepts one argument that can be either a string

+			 *	or an array of strings.  Invalid data will be ignored.

+			 *

+			 *	@access public

+			 *	@param string $tag (X)HTML tag that will be allowed after stripping text.

+			 *	@param array $attribs Associative array of allowed attributes - key => attribute name - value => attribute parameter

+			 *	@return bool Status of Adding (X)HTML and attributes.

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			public function AddHTML($tag = "", $attribs = array())

+			{

+				if(!is_string($tag))

+				{

+					trigger_error("kses5::AddHTML() requires the tag to be a string", E_USER_WARNING);

+					return false;

+				}

+

+				$tag = strtolower(trim($tag));

+				if($tag == "")

+				{

+					trigger_error("kses5::AddHTML() tried to add an empty/NULL tag", E_USER_WARNING);

+					return false;

+				}

+

+				if(!is_array($attribs))

+				{

+					trigger_error("kses5::AddHTML() requires an array (even an empty one) of attributes for '$tag'", E_USER_WARNING);

+					return false;

+				}

+

+				$new_attribs = array();

+				if(is_array($attribs) && count($attribs) > 0)

+				{

+					foreach($attribs as $idx1 => $val1)

+					{

+						$new_idx1 = strtolower($idx1);

+						$new_val1 = $attribs[$idx1];

+

+						if(is_array($new_val1) && count($attribs) > 0)

+						{

+							$tmp_val = array();

+							foreach($new_val1 as $idx2 => $val2)

+							{

+								$new_idx2 = strtolower($idx2);

+								$tmp_val[$new_idx2] = $val2;

+							}

+							$new_val1 = $tmp_val;

+						}

+

+						$new_attribs[$new_idx1] = $new_val1;

+					}

+				}

+

+				$this->allowed_html[$tag] = $new_attribs;

+				return true;

+			}

+

+			/**

+			 *	This method removes any NULL characters in $string.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string String without any NULL/chr(173)

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function removeNulls($string)

+			{

+				$string = preg_replace('/\0+/', '', $string);

+				$string = preg_replace('/(\\\\0)+/', '', $string);

+				return $string;

+			}

+

+			/**

+			 *	Normalizes HTML entities

+			 *

+			 *	This function normalizes HTML entities. It will convert "AT&T" to the correct

+			 *	"AT&amp;T", "&#00058;" to "&#58;", "&#XYZZY;" to "&amp;#XYZZY;" and so on.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string String with normalized entities

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function normalizeEntities($string)

+			{

+				# Disarm all entities by converting & to &amp;

+				$string = str_replace('&', '&amp;', $string);

+

+				#	TODO: Change back (Keep?) the allowed entities in our entity white list

+

+				#	Keeps entities that start with [A-Za-z]

+				$string = preg_replace(

+					'/&amp;([A-Za-z][A-Za-z0-9]{0,19});/',

+					'&\\1;',

+					$string

+				);

+

+				#	Change numeric entities to valid 16 bit values

+

+				$string = preg_replace(

+					'/&amp;#0*([0-9]{1,5});/e',

+					'\$this->normalizeEntities16bit("\\1")',

+					$string

+				);

+

+				#	Change &XHHHHHHH (Hex digits) to 16 bit hex values

+				$string = preg_replace(

+					'/&amp;#([Xx])0*(([0-9A-Fa-f]{2}){1,2});/',

+					'&#\\1\\2;',

+					$string

+				);

+

+				return $string;

+			}

+

+			/**

+			 *	Helper method used by normalizeEntites()

+			 *

+			 *	This method helps normalizeEntities() to only accept 16 bit values

+			 *	and nothing more for &#number; entities.

+			 *

+			 *	This method helps normalize_entities() during a preg_replace()

+			 *	where a &#(0)*XXXXX; occurs.  The '(0)*XXXXXX' value is converted to

+			 *	a number and the result is returned as a numeric entity if the number

+			 *	is less than 65536.  Otherwise, the value is returned 'as is'.

+			 *

+			 *	@access private

+			 *	@param string $i

+			 *	@return string Normalized numeric entity

+			 *	@see normalizeEntities()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function normalizeEntities16bit($i)

+			{

+			  return (($i > 65535) ? "&amp;#$i;" : "&#$i;");

+			}

+

+			/**

+			 *	Allows for additional user defined modifications to text.

+			 *

+			 *	This method allows for additional modifications to be performed on

+			 *	a string that's being run through Parse().  Currently, it returns the

+			 *	input string 'as is'.

+			 *

+			 *	This method is provided for users to extend the kses class for their own

+			 *	requirements.

+			 *

+			 *	@access public

+			 *	@param string $string String to perfrom additional modifications on.

+			 *	@return string User modified string.

+			 *	@see Parse()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			private function filterKsesTextHook($string)

+			{

+			  return $string;

+			}

+

+			/**

+			 *	Allows for additional user defined modifications to text.

+			 *

+			 *	@deprecated use filterKsesTextHook()

+			 *	@param string $string

+			 *	@return string

+			 *	@see filterKsesTextHook()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function _hook($string)

+			{

+				return $this->filterKsesTextHook($string);

+			}

+

+			/**

+			 *	This method goes through an array, and changes the keys to all lower case.

+			 *

+			 *	@access private

+			 *	@param array $in_array Associative array

+			 *	@return array Modified array

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function makeArrayKeysLowerCase($in_array)

+			{

+				$out_array = array();

+

+				if(is_array($in_array) && count($in_array) > 0)

+				{

+					foreach ($in_array as $in_key => $in_val)

+					{

+						$out_key = strtolower($in_key);

+						$out_array[$out_key] = array();

+

+						if(is_array($in_val) && count($in_val) > 0)

+						{

+							foreach ($in_val as $in_key2 => $in_val2)

+							{

+								$out_key2 = strtolower($in_key2);

+								$out_array[$out_key][$out_key2] = $in_val2;

+							}

+						}

+					}

+				}

+

+				return $out_array;

+			}

+

+			/**

+			 *	This method strips out disallowed and/or mangled (X)HTML tags along with assigned attributes.

+			 *

+			 *	This method does a lot of work. It rejects some very malformed things

+			 *	like <:::>. It returns an empty string if the element isn't allowed (look

+			 *	ma, no strip_tags()!). Otherwise it splits the tag into an element and an

+			 *	allowed attribute list.

+			 *

+			 *	@access private

+			 *	@param string $string

+			 *	@return string Modified string minus disallowed/mangled (X)HTML and attributes

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function stripTags($string)

+			{

+				$string = preg_replace('%\\\\"%', '"', $string);

+

+				if (substr($string, 0, 1) != '<')

+				{

+					# It matched a ">" character

+					return '&gt;';

+				}

+

+				if (!preg_match('%^<\s*(/\s*)?([a-zA-Z0-9]+)([^>]*)>?$%', $string, $matches))

+				{

+					# It's seriously malformed

+					return '';

+				}

+

+				$slash    = trim($matches[1]);

+				$elem     = $matches[2];

+				$attrlist = $matches[3];

+

+				if (

+					!isset($this->allowed_html[strtolower($elem)]) ||

+					!is_array($this->allowed_html[strtolower($elem)]))

+				{

+					#	Found an HTML element not in the white list

+					return '';

+				}

+

+				if ($slash != '')

+				{

+					return "<$slash$elem>";

+				}

+				# No attributes are allowed for closing elements

+

+				return $this->stripAttributes("$slash$elem", $attrlist);

+			}

+

+			/**

+			 *	This method strips out disallowed attributes for (X)HTML tags.

+			 *

+			 *	This method removes all attributes if none are allowed for this element.

+			 *	If some are allowed it calls combAttributes() to split them further, and then it

+			 *	builds up new HTML code from the data that combAttributes() returns. It also

+			 *	removes "<" and ">" characters, if there are any left. One more thing it

+			 *	does is to check if the tag has a closing XHTML slash, and if it does,

+			 *	it puts one in the returned code as well.

+			 *

+			 *	@access private

+			 *	@param string $element (X)HTML tag to check

+			 *	@param string $attr Text containing attributes to check for validity.

+			 *	@return string Resulting valid (X)HTML or ''

+			 *	@see combAttributes()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function stripAttributes($element, $attr)

+			{

+				# Is there a closing XHTML slash at the end of the attributes?

+				$xhtml_slash = '';

+				if (preg_match('%\s/\s*$%', $attr))

+				{

+					$xhtml_slash = ' /';

+				}

+

+				# Are any attributes allowed at all for this element?

+				if (

+					!isset($this->allowed_html[strtolower($element)]) ||

+					count($this->allowed_html[strtolower($element)]) == 0

+				)

+				{

+					return "<$element$xhtml_slash>";

+				}

+

+				# Split it

+				$attrarr = $this->combAttributes($attr);

+

+				# Go through $attrarr, and save the allowed attributes for this element

+				# in $attr2

+				$attr2 = '';

+				if(is_array($attrarr) && count($attrarr) > 0)

+				{

+					foreach ($attrarr as $arreach)

+					{

+						if(!isset($this->allowed_html[strtolower($element)][strtolower($arreach['name'])]))

+						{

+							continue;

+						}

+

+						$current = $this->allowed_html[strtolower($element)][strtolower($arreach['name'])];

+

+						if (!is_array($current))

+						{

+							# there are no checks

+							$attr2 .= ' '.$arreach['whole'];

+						}

+						else

+						{

+							# there are some checks

+							$ok = true;

+							if(is_array($current) && count($current) > 0)

+							{

+								foreach ($current as $currkey => $currval)

+								{

+									if (!$this->checkAttributeValue($arreach['value'], $arreach['vless'], $currkey, $currval))

+									{

+										$ok = false;

+										break;

+									}

+								}

+							}

+

+							if ($ok)

+							{

+								# it passed them

+								$attr2 .= ' '.$arreach['whole'];

+							}

+						}

+					}

+				}

+

+				# Remove any "<" or ">" characters

+				$attr2 = preg_replace('/[<>]/', '', $attr2);

+				return "<$element$attr2$xhtml_slash>";

+			}

+

+			/**

+			 *	This method combs through an attribute list string and returns an associative array of attributes and values.

+			 *

+			 *	This method does a lot of work. It parses an attribute list into an array

+			 *	with attribute data, and tries to do the right thing even if it gets weird

+			 *	input. It will add quotes around attribute values that don't have any quotes

+			 *	or apostrophes around them, to make it easier to produce HTML code that will

+			 *	conform to W3C's HTML specification. It will also remove bad URL protocols

+			 *	from attribute values.

+			 *

+			 *	@access private

+			 *	@param string $attr Text containing tag attributes for parsing

+			 *	@return array Associative array containing data on attribute and value

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function combAttributes($attr)

+			{

+				$attrarr  = array();

+				$mode     = 0;

+				$attrname = '';

+

+				# Loop through the whole attribute list

+

+				while (strlen($attr) != 0)

+				{

+					# Was the last operation successful?

+					$working = 0;

+

+					switch ($mode)

+					{

+						case 0:	# attribute name, href for instance

+							if (preg_match('/^([-a-zA-Z]+)/', $attr, $match))

+							{

+								$attrname = $match[1];

+								$working = $mode = 1;

+								$attr = preg_replace('/^[-a-zA-Z]+/', '', $attr);

+							}

+							break;

+						case 1:	# equals sign or valueless ("selected")

+							if (preg_match('/^\s*=\s*/', $attr)) # equals sign

+							{

+								$working = 1;

+								$mode    = 2;

+								$attr    = preg_replace('/^\s*=\s*/', '', $attr);

+								break;

+							}

+							if (preg_match('/^\s+/', $attr)) # valueless

+							{

+								$working   = 1;

+								$mode      = 0;

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => '',

+									'whole' => $attrname,

+									'vless' => 'y'

+								);

+								$attr      = preg_replace('/^\s+/', '', $attr);

+							}

+							break;

+						case 2: # attribute value, a URL after href= for instance

+							if (preg_match('/^"([^"]*)"(\s+|$)/', $attr, $match)) # "value"

+							{

+								$thisval   = $this->removeBadProtocols($match[1]);

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => $thisval,

+									'whole' => $attrname . '="' . $thisval . '"',

+									'vless' => 'n'

+								);

+								$working   = 1;

+								$mode      = 0;

+								$attr      = preg_replace('/^"[^"]*"(\s+|$)/', '', $attr);

+								break;

+							}

+							if (preg_match("/^'([^']*)'(\s+|$)/", $attr, $match)) # 'value'

+							{

+								$thisval   = $this->removeBadProtocols($match[1]);

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => $thisval,

+									'whole' => "$attrname='$thisval'",

+									'vless' => 'n'

+								);

+								$working   = 1;

+								$mode      = 0;

+								$attr      = preg_replace("/^'[^']*'(\s+|$)/", '', $attr);

+								break;

+							}

+							if (preg_match("%^([^\s\"']+)(\s+|$)%", $attr, $match)) # value

+							{

+								$thisval   = $this->removeBadProtocols($match[1]);

+								$attrarr[] = array(

+									'name'  => $attrname,

+									'value' => $thisval,

+									'whole' => $attrname . '="' . $thisval . '"',

+									'vless' => 'n'

+								);

+								# We add quotes to conform to W3C's HTML spec.

+								$working   = 1;

+								$mode      = 0;

+								$attr      = preg_replace("%^[^\s\"']+(\s+|$)%", '', $attr);

+							}

+							break;

+					}

+

+					if ($working == 0) # not well formed, remove and try again

+					{

+						$attr = preg_replace('/^("[^"]*("|$)|\'[^\']*(\'|$)|\S)*\s*/', '', $attr);

+						$mode = 0;

+					}

+				}

+

+				# special case, for when the attribute list ends with a valueless

+				# attribute like "selected"

+				if ($mode == 1)

+				{

+					$attrarr[] = array(

+						'name'  => $attrname,

+						'value' => '',

+						'whole' => $attrname,

+						'vless' => 'y'

+					);

+				}

+

+				return $attrarr;

+			}

+

+			/**

+			 *	This method removes disallowed protocols.

+			 *

+			 *	This method removes all non-allowed protocols from the beginning of

+			 *	$string. It ignores whitespace and the case of the letters, and it does

+			 *	understand HTML entities. It does its work in a while loop, so it won't be

+			 *	fooled by a string like "javascript:javascript:alert(57)".

+			 *

+			 *	@access private

+			 *	@param string $string String to check for protocols

+			 *	@return string String with removed protocols

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function removeBadProtocols($string)

+			{

+				$string  = $this->RemoveNulls($string);

+				$string = preg_replace('/\xad+/', '', $string); # deals with Opera "feature"

+				$string2 = $string . 'a';

+

+				while ($string != $string2)

+				{

+					$string2 = $string;

+					$string  =  preg_replace(

+										'/^((&[^;]*;|[\sA-Za-z0-9])*)'.

+										'(:|&#58;|&#[Xx]3[Aa];)\s*/e',

+										'\$this->filterProtocols("\\1")',

+										$string

+									);

+				}

+

+				return $string;

+			}

+

+			/**

+			 *	Helper method used by removeBadProtocols()

+			 *

+			 *	This function processes URL protocols, checks to see if they're in the white-

+			 *	list or not, and returns different data depending on the answer.

+			 *

+			 *	@access private

+			 *	@param string $string String to check for protocols

+			 *	@return string String with removed protocols

+			 *	@see removeBadProtocols()

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function filterProtocols($string)

+			{

+				$string = $this->decodeEntities($string);

+				$string = preg_replace('/\s/', '', $string);

+				$string = $this->removeNulls($string);

+				$string = preg_replace('/\xad+/', '', $string2); # deals with Opera "feature"

+				$string = strtolower($string);

+

+				if(is_array($this->allowed_protocols) && count($this->allowed_protocols) > 0)

+				{

+					foreach ($this->allowed_protocols as $one_protocol)

+					{

+						if (strtolower($one_protocol) == $string)

+						{

+							return "$string:";

+						}

+					}

+				}

+

+				return '';

+			}

+

+			/**

+			 *	Controller method for performing checks on attribute values.

+			 *

+			 *	This method calls the appropriate method as specified by $checkname with

+			 *	the parameters $value, $vless, and $checkvalue, and returns the result

+			 *	of the call.

+			 *

+			 *	This method's functionality can be expanded by creating new methods

+			 *	that would match checkAttributeValue[$checkname].

+			 *

+			 *	Current checks implemented are: "maxlen", "minlen", "maxval", "minval" and "valueless"

+			 *

+			 *	@access private

+			 *	@param string $value The value of the attribute to be checked.

+			 *	@param string $vless Indicates whether the the value is supposed to be valueless

+			 *	@param string $checkname The check to be performed

+			 *	@param string $checkvalue The value that is to be checked against

+			 *	@return bool Indicates whether the check passed or not

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			private function checkAttributeValue($value, $vless, $checkname, $checkvalue)

+			{

+				$ok = true;

+				$check_attribute_method_name  = 'checkAttributeValue' . ucfirst(strtolower($checkname));

+				if(method_exists($this, $check_attribute_method_name))

+				{

+					$ok = $this->$check_attribute_method_name($value, $checkvalue, $vless);

+				}

+

+				return $ok;

+			}

+

+			/**

+			 *	Helper method invoked by checkAttributeValue().

+			 *

+			 *	The maxlen check makes sure that the attribute value has a length not

+			 *	greater than the given value. This can be used to avoid Buffer Overflows

+			 *	in WWW clients and various Internet servers.

+			 *

+			 *	@access private

+			 *	@param string $value The value of the attribute to be checked.

+			 *	@param int $checkvalue The maximum value allowed

+			 *	@return bool Indicates whether the check passed or not

+			 *	@see checkAttributeValue()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			private function checkAttributeValueMaxlen($value, $checkvalue)

+			{

+				if (strlen($value) > intval($checkvalue))

+				{

+					return false;

+				}

+				return true;

+			}

+

+			/**

+			 *	Helper method invoked by checkAttributeValue().

+			 *

+			 *	The minlen check makes sure that the attribute value has a length not

+			 *	smaller than the given value.

+			 *

+			 *	@access private

+			 *	@param string $value The value of the attribute to be checked.

+			 *	@param int $checkvalue The minimum value allowed

+			 *	@return bool Indicates whether the check passed or not

+			 *	@see checkAttributeValue()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			private function checkAttributeValueMinlen($value, $checkvalue)

+			{

+				if (strlen($value) < intval($checkvalue))

+				{

+					return false;

+				}

+				return true;

+			}

+

+			/**

+			 *	Helper method invoked by checkAttributeValue().

+			 *

+			 *	The maxval check does two things: it checks that the attribute value is

+			 *	an integer from 0 and up, without an excessive amount of zeroes or

+			 *	whitespace (to avoid Buffer Overflows). It also checks that the attribute

+			 *	value is not greater than the given value.

+			 *

+			 *	This check can be used to avoid Denial of Service attacks.

+			 *

+			 *	@access private

+			 *	@param int $value The value of the attribute to be checked.

+			 *	@param int $checkvalue The maximum numeric value allowed

+			 *	@return bool Indicates whether the check passed or not

+			 *	@see checkAttributeValue()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			private function checkAttributeValueMaxval($value, $checkvalue)

+			{

+				if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))

+				{

+					return false;

+				}

+				if (intval($value) > intval($checkvalue))

+				{

+					return false;

+				}

+				return true;

+			}

+

+			/**

+			 *	Helper method invoked by checkAttributeValue().

+			 *

+			 *	The minval check checks that the attribute value is a positive integer,

+			 *	and that it is not smaller than the given value.

+			 *

+			 *	@access private

+			 *	@param int $value The value of the attribute to be checked.

+			 *	@param int $checkvalue The minimum numeric value allowed

+			 *	@return bool Indicates whether the check passed or not

+			 *	@see checkAttributeValue()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			private function checkAttributeValueMinval($value, $checkvalue)

+			{

+				if (!preg_match('/^\s{0,6}[0-9]{1,6}\s{0,6}$/', $value))

+				{

+					return false;

+				}

+				if (intval($value) < ($checkvalue))

+				{

+					return false;

+				}

+				return true;

+			}

+

+			/**

+			 *	Helper method invoked by checkAttributeValue().

+			 *

+			 *	The valueless check checks if the attribute has a value

+			 *	(like <a href="blah">) or not (<option selected>). If the given value

+			 *	is a "y" or a "Y", the attribute must not have a value.

+			 *

+			 *	If the given value is an "n" or an "N", the attribute must have one.

+			 *

+			 *	@access private

+			 *	@param int $value The value of the attribute to be checked.

+			 *	@param mixed $checkvalue This variable is ignored for this test

+			 *	@param string $vless Flag indicating if this attribute is not supposed to have an attribute

+			 *	@return bool Indicates whether the check passed or not

+			 *	@see checkAttributeValue()

+			 *	@since PHP5 OOP 1.0.0

+			 */

+			private function checkAttributeValueValueless($value, $checkvalue, $vless)

+			{

+				if (strtolower($checkvalue) != $vless)

+				{

+					return false;

+				}

+				return true;

+			}

+

+			/**

+			 *	Decodes numeric HTML entities

+			 *

+			 *	This method decodes numeric HTML entities (&#65; and &#x41;). It doesn't

+			 *	do anything with other entities like &auml;, but we don't need them in the

+			 *	URL protocol white listing system anyway.

+			 *

+			 *	@access private

+			 *	@param string $value The entitiy to be decoded.

+			 *	@return string Decoded entity

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			private function decodeEntities($string)

+			{

+				$string = preg_replace('/&#([0-9]+);/e', 'chr("\\1")', $string);

+				$string = preg_replace('/&#[Xx]([0-9A-Fa-f]+);/e', 'chr(hexdec("\\1"))', $string);

+				return $string;

+			}

+

+			/**

+			 *	Returns PHP5 OOP version # of kses.

+			 *

+			 *	Since this class has been refactored and documented and proven to work,

+			 *	I'm fixing the version number at 1.0.0.

+			 *

+			 *	This version is syntax compatible with the PHP4 OOP version 0.0.2.  Future

+			 *	versions may not be syntax compatible.

+			 *

+			 *	@access public

+			 *	@return string Version number

+			 *	@since PHP4 OOP 0.0.1

+			 */

+			public function Version()

+			{

+				return 'PHP5 OOP 1.0.2';

+			}

+		}

+	}

+?>
\ No newline at end of file
diff --git a/mod/kses/vendors/kses/oop/test.oop.kses.php b/mod/kses/vendors/kses/oop/test.oop.kses.php
new file mode 100644
index 000000000..8c6e885d8
--- /dev/null
+++ b/mod/kses/vendors/kses/oop/test.oop.kses.php
@@ -0,0 +1,507 @@
+<?php

+

+	//	This is a q&d program that shows some of the results of

+	//	running KSES.  If you have further questions, check the

+	//	current valid email address at http://chaos.org/contact/

+

+	//	Make sure we're in a usable PHP environment

+	if(substr(phpversion(), 0, 1) < 4)

+	{

+		define('KSESTEST_VER', 0);

+	}

+	elseif(substr(phpversion(), 0, 1) >= 5)

+	{

+		define('KSESTEST_VER', 5);

+	}

+	else

+	{

+		define('KSESTEST_VER', 4);

+	}

+

+	//	See if we're in command line or web

+	if($_SERVER["DOCUMENT_ROOT"] == "")

+	{

+		define('KSESTEST_ENV', 'CLI');

+	}

+	else

+	{

+		define('KSESTEST_ENV', 'WEB');

+	}

+

+	if(KSESTEST_VER == 0)

+	{

+		$message = array(

+			"Error: Not using a current version of PHP!",

+			"You are using PHP version " . phpversion() . ".",

+			"KSES Class version requires PHP4 or better.",

+			"KSES test program ending."

+			);

+

+		displayPage(

+			array("title" => "Error running KSES test", "message" => $message)

+		);

+

+		exit();

+	}

+

+	$include_file = "php" . KSESTEST_VER . ".class.kses.php";

+	if(file_exists($include_file) && is_readable($include_file))

+	{

+		include_once($include_file);

+	}

+	else

+	{

+		$message = array(

+			"Error:  Unable to find '" . $include_file . "'.",

+			"Please check your include path and make sure the file is available.",

+			"Path: " . ini_get('include_path')

+		);

+

+		displayPage(

+			array('title' => 'Unable to include ' . $include_file, 'message' => $message)

+		);

+

+		exit();

+	}

+

+	$kses_type = "kses" . KSESTEST_VER;

+	$myKses = new $kses_type;

+

+	$test_text = array();

+	$test_text = test1_protocols($myKses);

+	$test_text = array_merge($test_text, test1_html($myKses));

+	$test_text = array_merge($test_text, test1_kses($myKses));

+

+	displayPage(

+		array('title' => 'New Test', 'message' => $test_text)

+	);

+

+	function test1_kses(&$myKses)

+	{

+		$out = array(output_hr(), "Testing current configuration");

+

+		$test_tags = array(

+			'<a href="http://www.chaos.org/">www.chaos.org</a>',

+			'<a name="X">Short \'a name\' tag</a>',

+			'<td colspan="3" rowspan="5">Foo</td>',

+			'<td rowspan="2" class="mugwump" style="background-color: rgb(255, 204 204);">Bar</td>',

+			'<td nowrap>Very Long String running to 1000 characters...</td>',

+			'<td bgcolor="#00ff00" nowrap>Very Long String with a blue background</td>',

+			'<a href="proto1://www.foo.com">New protocol test</a>',

+			'<img src="proto2://www.foo.com" />',

+			'<a href="javascript:javascript:javascript:javascript:javascript:alert(\'Boo!\');">bleep</a>',

+			'<a href="proto4://abc.xyz.foo.com">Another new protocol</a>',

+			'<a href="proto9://foo.foo.foo.foo.foo.org/">Test of "proto9"</a>',

+			'<td width="75">Bar!</td>',

+			'<td width="200">Long Cell</td>'

+		);

+

+		$out_li = array();

+		// Keep only allowed HTML from the presumed 'form'.

+		foreach($test_tags as $tag)

+		{

+			$temp  = $myKses->Parse($tag);

+			$check = ($temp == $tag) ? true : false;

+			$text  = ($temp == $tag) ? 'pass' : 'fail';

+

+			$li_text  = output_testresult($check, $text) . output_newline();

+			$li_text .= "Input: &nbsp;" . output_translate($tag) . output_newline();

+			$li_text .= "Output: " . output_translate($temp);

+			if(KSESTEST_ENV == 'CLI')

+			{

+				$li_text .= output_newline();

+			}

+

+			array_push($out_li, output_code_wrap($li_text));

+		}

+

+		$out = array_merge($out, array(output_ul($out_li)));

+		array_push($out, output_hr());

+		array_push($out, "Testing is now finished.");

+		return $out;

+	}

+

+	function output_code_wrap($text)

+	{

+		if(KSESTEST_ENV == 'CLI')

+		{

+			return $text;

+		}

+		else

+		{

+			return "<code>\n$text<code>\n";

+		}

+	}

+

+	function output_translate($text)

+	{

+		if(KSESTEST_ENV == 'CLI')

+		{

+			return $text;

+		}

+		else

+		{

+			return htmlentities($text);

+		}

+	}

+

+	function output_testresult($pass = false, $text = "")

+	{

+		if(KSESTEST_ENV == 'CLI')

+		{

+			return '[' . $text . ']';

+		}

+		else

+		{

+			if($pass == true)

+			{

+				return '<span style="color: green;">[' . $text . ']</span>';

+			}

+			else

+			{

+				return '<span style="color: red;">[' . $text . ']</span>';

+			}

+		}

+	}

+

+	function output_spaces()

+	{

+		if(KSESTEST_ENV == 'WEB')

+		{

+			$out = "&nbsp;&nbsp;&nbsp;";

+		}

+		else

+		{

+			$out = "   ";

+		}

+

+		return $out;

+	}

+

+	function output_newline()

+	{

+		if(KSESTEST_ENV == 'WEB')

+		{

+			$out = "<br />\n";

+		}

+		else

+		{

+			$out = "\n";

+		}

+

+		return $out;

+	}

+

+	function displayPage($data = array())

+	{

+		$title   = ($data['title'] == '') ? 'No title' : $data['title'];

+		$message = ($data['message'] == '') ? array('No message') : $data['message'];

+

+		$out = "";

+

+		foreach($message as $text)

+		{

+			if(KSESTEST_ENV == 'WEB')

+			{

+				$header = "\t\t<h1>$title</h1>\n\t\t<hr />\n";

+				$out .= "\t\t<p>\n";

+				$out .= "\t\t\t$text\n";

+				$out .= "\t\t</p>\n";

+			}

+			else

+			{

+				$header = "$title\n" . str_repeat('-', 60) . "\n\n";

+				$out .= "\t$text\n\n";

+			}

+		}

+

+		if(KSESTEST_ENV == 'WEB')

+		{

+			echo "<html>\n";

+			echo "\t<head>\n";

+			echo "\t\t<title>$title</title>\n";

+			echo "\t</head>\n";

+			echo "\t<body>\n";

+			echo $header;

+			echo $out;

+			echo "\t</body>\n";

+			echo "</html>\n";

+		}

+		else

+		{

+			echo $header;

+			echo $out;

+		}

+	}

+

+	function output_hr()

+	{

+		if(KSESTEST_ENV == 'WEB')

+		{

+			return "\t\t\t<hr />\n";

+		}

+		else

+		{

+			return str_repeat(60, '-') . "\n";

+		}

+	}

+

+	function output_ul($data = array(), $padding = "")

+	{

+		if(!is_array($data) || count($data) < 1)

+		{

+			return "";

+		}

+

+		$text = "";

+		if(KSESTEST_ENV == 'WEB')

+		{

+			$text = "\t\t\t<ul>\n";

+			foreach($data as $li)

+			{

+				$text .= "\t\t\t\t<li>$li</li>\n";

+			}

+			$text .= "\t\t\t</ul>\n";

+		}

+		else

+		{

+			foreach($data as $li)

+			{

+				$text .= $padding . "   * $li\n";

+			}

+		}

+

+		return $text;

+	}

+

+	function test1_protocols(&$myKses)

+	{

+		$default_prots = $myKses->dumpProtocols();

+		$out_text = array();

+		if(count($default_prots) > 0)

+		{

+			array_push($out_text, "Initial protocols from KSES" . KSESTEST_VER . ":");

+			array_push($out_text, output_ul($default_prots));

+			array_push($out_text, output_hr());

+		}

+

+		$myKses->AddProtocols(array("proto1", "proto2:", "proto3"));   // Add a list of protocols

+		$myKses->AddProtocols("proto4:");  // Add a single protocol (Note ':' is optional at end)

+		$myKses->AddProtocol("proto9", "mystery:", "anarchy");

+		$myKses->AddProtocol("alpha", "beta", "gamma:");

+

+		$add_protocol  = "\t\t\t<ol>\n";

+		$add_protocol .= "\t\t\t\t" . '<li>$myKses->AddProtocols(array("proto1", "proto2:", "proto3"));</li>' . "\n";

+		$add_protocol .= "\t\t\t\t" . '<li>$myKses->AddProtocols("proto4:");</li>' . "\n";

+		$add_protocol .= "\t\t\t\t" . '<li>$myKses->AddProtocols("proto4:");</li>' . "\n";

+		$add_protocol .= "\t\t\t\t" . '<li>$myKses->AddProtocol("proto9", "mystery:", "anarchy");</li>' . "\n";

+		$add_protocol .= "\t\t\t\t" . '<li>$myKses->AddProtocol("alpha", "beta", "gamma:");</li>' . "\n";

+		$add_protocol .= "\t\t\t</ol>\n";

+

+		array_push($out_text, $add_protocol);

+

+		$new_prots = $myKses->dumpProtocols();

+		if(count($new_prots) > 0)

+		{

+			array_push($out_text, "New protocols from KSES" . KSESTEST_VER . " after using AddProtocol(s):");

+			array_push($out_text, output_ul($new_prots));

+			array_push($out_text, output_hr());

+		}

+

+		$myKses->RemoveProtocols(array("mystery", "anarchy:"));

+		$myKses->RemoveProtocols("alpha:");

+		$myKses->RemoveProtocol("beta:");

+		$myKses->RemoveProtocol("gamma");

+

+		$remove_protocol  = "\t\t\t<ol>\n";

+		$remove_protocol .= "\t\t\t\t" . '<li>$myKses->RemoveProtocols(array("mystery", "anarchy:"));</li>' . "\n";

+		$remove_protocol .= "\t\t\t\t" . '<li>$myKses->RemoveProtocols("alpha:");</li>' . "\n";

+		$remove_protocol .= "\t\t\t\t" . '<li>$myKses->RemoveProtocol("beta:");</li>' . "\n";

+		$remove_protocol .= "\t\t\t\t" . '<li>$myKses->RemoveProtocol("gamma");</li>' . "\n";

+		$remove_protocol .= "\t\t\t</ol>\n";

+		array_push($out_text, $remove_protocol);

+

+		$new_prots = $myKses->dumpProtocols();

+		if(count($new_prots) > 0)

+		{

+			array_push($out_text, "Resulting protocols from KSES" . KSESTEST_VER . " after using RemoveProtocol(s):");

+			array_push($out_text, output_ul($new_prots));

+			array_push($out_text, output_hr());

+		}

+

+		$myKses->SetProtocols(array("https", "gopher", "news"));

+		$set_protocol  = "\t\t\t<ol>\n";

+		$set_protocol .= "\t\t\t\t" . '<li>$myKses->SetProtocols(array("https", "gopher", "news"));</li>' . "\n";

+		$set_protocol .= "\t\t\t</ol>\n";

+		array_push($out_text, $set_protocol);

+

+		$new_prots = $myKses->dumpProtocols();

+		if(count($new_prots) > 0)

+		{

+			array_push($out_text, "Resulting protocols from KSES" . KSESTEST_VER . " after using SetProtocols:");

+			array_push($out_text, output_ul($new_prots));

+			array_push($out_text, output_hr());

+		}

+

+		//	Invisible reset

+		$myKses->SetProtocols(array("http", "proto1", "proto2", "proto9"));

+

+		return $out_text;

+	}

+

+	function test1_html(&$myKses)

+	{

+		$out = array();

+

+		//	Allows <p>|</p> tag

+		$myKses->AddHTML("p");

+

+		//	Allows 'a' tag with href|name attributes,

+		//	href has minlen of 10 chars, and maxlen of 25 chars

+		//	name has minlen of  2 chars

+		$myKses->AddHTML(

+			"a",

+			array(

+				"href" => array('maxlen' => 25, 'minlen' => 10),

+				"name" => array('minlen' => 2)

+			)

+		);

+

+		//	Allows 'td' tag with colspan|rowspan|class|style|width|nowrap attributes,

+		//		colspan has minval of   2       and maxval of 5

+		//		rowspan has minval of   3       and maxval of 6

+		//		class   has minlen of   1 char  and maxlen of   10 chars

+		//		style   has minlen of  10 chars and maxlen of 100 chars

+		//		width   has maxval of 100

+		//		nowrap  is valueless

+		$myKses->AddHTML(

+			"td",

+			array(

+				"colspan" => array('minval' =>   2, 'maxval' =>   5),

+				"rowspan" => array('minval' =>   3, 'maxval' =>   6),

+				"class"   => array("minlen" =>   1, 'maxlen' =>  10),

+				"width"   => array("maxval" => 100),

+				"style"   => array('minlen' =>  10, 'maxlen' => 100),

+				"nowrap"  => array('valueless' => 'y')

+			)

+		);

+

+		array_push($out, "Modifying HTML Tests:");

+		$code_text  = "<pre>\n";

+		$code_text .= "      //   Allows &lt;p&gt;|&lt;/p&gt; tag\n";

+		$code_text .= "      \$myKses-&gt;AddHTML(\"p\");\n";

+		$code_text .= "\n";

+		$code_text .= "      //   Allows 'a' tag with href|name attributes,\n";

+		$code_text .= "      //   href has minlen of 10 chars, and maxlen of 25 chars\n";

+		$code_text .= "      //   name has minlen of  2 chars\n";

+		$code_text .= "      \$myKses-&gt;AddHTML(\n";

+		$code_text .= "         \"a\",\n";

+		$code_text .= "         array(\n";

+		$code_text .= "            \"href\" =&gt; array('maxlen' =&gt; 25, 'minlen' =&gt; 10),\n";

+		$code_text .= "            \"name\" =&gt; array('minlen' =&gt; 2)\n";

+		$code_text .= "         )\n";

+		$code_text .= "      );\n";

+		$code_text .= "\n";

+		$code_text .= "      //   Allows 'td' tag with colspan|rowspan|class|style|width|nowrap attributes,\n";

+		$code_text .= "      //      colspan has minval of   2       and maxval of 5\n";

+		$code_text .= "      //      rowspan has minval of   3       and maxval of 6\n";

+		$code_text .= "      //      class   has minlen of   1 char  and maxlen of   10 chars\n";

+		$code_text .= "      //      style   has minlen of  10 chars and maxlen of 100 chars\n";

+		$code_text .= "      //      width   has maxval of 100\n";

+		$code_text .= "      //      nowrap  is valueless\n";

+		$code_text .= "      \$myKses-&gt;AddHTML(\n";

+		$code_text .= "         \"td\",\n";

+		$code_text .= "         array(\n";

+		$code_text .= "            \"colspan\" =&gt; array('minval' =&gt;   2, 'maxval' =&gt;   5),\n";

+		$code_text .= "            \"rowspan\" =&gt; array('minval' =&gt;   3, 'maxval' =&gt;   6),\n";

+		$code_text .= "            \"class\"   =&gt; array(\"minlen\" =&gt;   1, 'maxlen' =&gt;  10),\n";

+		$code_text .= "            \"width\"   =&gt; array(\"maxval\" =&gt; 100),\n";

+		$code_text .= "            \"style\"   =&gt; array('minlen' =&gt;  10, 'maxlen' =&gt; 100),\n";

+		$code_text .= "            \"nowrap\"  =&gt; array('valueless' =&gt; 'y')\n";

+		$code_text .= "         )\n";

+		$code_text .= "      );\n";

+		$code_text .= "</pre>\n";

+

+		array_push($out, $code_text);

+		array_push($out, output_hr());

+		array_push($out, "Net results:");

+

+		$out_elems = $myKses->DumpElements();

+		if(count($out_elems) > 0)

+		{

+			//array_push($out, "\t\t\t<ul>\n");

+			foreach($out_elems as $tag => $attr_data)

+			{

+				$out_li_elems = array();

+				$elem_text = "(X)HTML element $tag";

+				$allow = "";

+				if(isset($attr_data) && is_array($attr_data) && count($attr_data) > 0)

+				{

+					$allow = " allows attribute";

+					if(count($attr_data) > 1)

+					{

+						$allow .= "s";

+					}

+					$allow .= ":\n";

+				}

+

+				array_push($out_li_elems, "$elem_text$allow");

+

+				$attr_test_li = array();

+				if(isset($attr_data) && is_array($attr_data) && count($attr_data) > 0)

+				{

+					foreach($attr_data as $attr_name => $attr_tests)

+					{

+						$li_text = $attr_name;

+						if(isset($attr_tests) && count($attr_tests) > 0)

+						{

+							foreach($attr_tests as $test_name => $test_val)

+							{

+								switch($test_name)

+								{

+									case "maxlen":

+										$li_text .= " - maximum length of '" . $test_val . "' characters";

+										break;

+									case "minlen":

+										$li_text .= " - minimum length of '" . $test_val . "' characters";

+										break;

+									case "minval":

+										$li_text .= " - minimum value of '" . $test_val . "'";

+										break;

+									case "maxval":

+										$li_text .= " - maximum value of '" . $test_val . "'";

+										break;

+									case "valueless":

+										switch(strtolower($test_val))

+										{

+											case 'n':

+												$li_text .= " - must not be valueless";

+												break;

+											case 'y':

+												$li_text .= " - must be valueless";

+												break;

+											default:

+												break;

+										}

+										break;

+									default:

+										break;

+								}

+							}

+						}

+						array_push($attr_test_li, $li_text);

+					}

+					if(count($attr_test_li) > 0)

+					{

+						$attr_test_li = output_ul($attr_test_li, "   ");

+						$out_li_elems = array("$elem_text$allow$attr_test_li");

+					}

+				}

+				$out = array_merge($out, $out_li_elems);

+			}

+		}

+

+		return $out;

+	}

+

+?>
\ No newline at end of file