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EasyPeasyICS.php000064400000007736151157643660007552 0ustar00<?php
/**
* EasyPeasyICS Simple ICS/vCal data generator.
* @author Marcus Bointon <phpmailer@synchromedia.co.uk>
* @author Manuel Reinhard <manu@sprain.ch>
*
* Built with inspiration from
*
http://stackoverflow.com/questions/1463480/how-can-i-use-php-to-dynamically-publish-an-ical-file-to-be-read-by-google-calend/1464355#1464355
* History:
* 2010/12/17 - Manuel Reinhard - when it all started
* 2014 PHPMailer project becomes maintainer
*/
/**
* Class EasyPeasyICS.
* Simple ICS data generator
* @package phpmailer
* @subpackage easypeasyics
*/
class EasyPeasyICS
{
/**
* The name of the calendar
* @var string
*/
protected $calendarName;
/**
* The array of events to add to this calendar
* @var array
*/
protected $events = array();
/**
* Constructor
* @param string $calendarName
*/
public function __construct($calendarName = "")
{
$this->calendarName = $calendarName;
}
/**
* Add an event to this calendar.
* @param string $start The start date and time as a unix timestamp
* @param string $end The end date and time as a unix timestamp
* @param string $summary A summary or title for the event
* @param string $description A description of the event
* @param string $url A URL for the event
* @param string $uid A unique identifier for the event - generated
automatically if not provided
* @return array An array of event details, including any generated UID
*/
public function addEvent($start, $end, $summary = '',
$description = '', $url = '', $uid = '')
{
if (empty($uid)) {
$uid = md5(uniqid(mt_rand(), true)) .
'@EasyPeasyICS';
}
$event = array(
'start' => gmdate('Ymd', $start) .
'T' . gmdate('His', $start) . 'Z',
'end' => gmdate('Ymd', $end) .
'T' . gmdate('His', $end) . 'Z',
'summary' => $summary,
'description' => $description,
'url' => $url,
'uid' => $uid
);
$this->events[] = $event;
return $event;
}
/**
* @return array Get the array of events.
*/
public function getEvents()
{
return $this->events;
}
/**
* Clear all events.
*/
public function clearEvents()
{
$this->events = array();
}
/**
* Get the name of the calendar.
* @return string
*/
public function getName()
{
return $this->calendarName;
}
/**
* Set the name of the calendar.
* @param $name
*/
public function setName($name)
{
$this->calendarName = $name;
}
/**
* Render and optionally output a vcal string.
* @param bool $output Whether to output the calendar data directly
(the default).
* @return string The complete rendered vlal
*/
public function render($output = true)
{
//Add header
$ics = 'BEGIN:VCALENDAR
METHOD:PUBLISH
VERSION:2.0
X-WR-CALNAME:' . $this->calendarName . '
PRODID:-//hacksw/handcal//NONSGML v1.0//EN';
//Add events
foreach ($this->events as $event) {
$ics .= '
BEGIN:VEVENT
UID:' . $event['uid'] . '
DTSTAMP:' . gmdate('Ymd') . 'T' .
gmdate('His') . 'Z
DTSTART:' . $event['start'] . '
DTEND:' . $event['end'] . '
SUMMARY:' . str_replace("\n", "\\n",
$event['summary']) . '
DESCRIPTION:' . str_replace("\n", "\\n",
$event['description']) . '
URL;VALUE=URI:' . $event['url'] . '
END:VEVENT';
}
//Add footer
$ics .= '
END:VCALENDAR';
if ($output) {
//Output
$filename = $this->calendarName;
//Filename needs quoting if it contains spaces
if (strpos($filename, ' ') !== false) {
$filename =
'"'.$filename.'"';
}
header('Content-type: text/calendar; charset=utf-8');
header('Content-Disposition: inline; filename=' .
$filename . '.ics');
echo $ics;
}
return $ics;
}
}
htmlfilter.php000064400000114543151157643660007455 0ustar00<?php
/**
* htmlfilter.inc
* ---------------
* This set of functions allows you to filter html in order to remove
* any malicious tags from it. Useful in cases when you need to filter
* user input for any cross-site-scripting attempts.
*
* Copyright (C) 2002-2004 by Duke University
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* @Author Konstantin Riabitsev <icon@linux.duke.edu>
* @Author Jim Jagielski <jim@jaguNET.com / jimjag@gmail.com>
* @Version 1.1 ($Date$)
*/
/**
* This function returns the final tag out of the tag name, an array
* of attributes, and the type of the tag. This function is called by
* tln_sanitize internally.
*
* @param string $tagname the name of the tag.
* @param array $attary the array of attributes and their values
* @param integer $tagtype The type of the tag (see in comments).
* @return string A string with the final tag representation.
*/
function tln_tagprint($tagname, $attary, $tagtype)
{
if ($tagtype == 2) {
$fulltag = '</' . $tagname . '>';
} else {
$fulltag = '<' . $tagname;
if (is_array($attary) && sizeof($attary)) {
$atts = array();
foreach($attary as $attname => $attvalue) {
array_push($atts, "$attname=$attvalue");
}
$fulltag .= ' ' . join(' ', $atts);
}
if ($tagtype == 3) {
$fulltag .= ' /';
}
$fulltag .= '>';
}
return $fulltag;
}
/**
* A small helper function to use with array_walk. Modifies a by-ref
* value and makes it lowercase.
*
* @param string $val a value passed by-ref.
* @return void since it modifies a by-ref value.
*/
function tln_casenormalize(&$val)
{
$val = strtolower($val);
}
/**
* This function skips any whitespace from the current position within
* a string and to the next non-whitespace value.
*
* @param string $body the string
* @param integer $offset the offset within the string where we should
start
* looking for the next non-whitespace character.
* @return integer the location within the $body where the next
* non-whitespace char is located.
*/
function tln_skipspace($body, $offset)
{
preg_match('/^(\s*)/s', substr($body, $offset), $matches);
if (sizeof($matches[1])) {
$count = strlen($matches[1]);
$offset += $count;
}
return $offset;
}
/**
* This function looks for the next character within a string. It's
* really just a glorified "strpos", except it catches the
failures
* nicely.
*
* @param string $body The string to look for needle in.
* @param integer $offset Start looking from this position.
* @param string $needle The character/string to look for.
* @return integer location of the next occurrence of the needle,
or
* strlen($body) if needle wasn't found.
*/
function tln_findnxstr($body, $offset, $needle)
{
$pos = strpos($body, $needle, $offset);
if ($pos === false) {
$pos = strlen($body);
}
return $pos;
}
/**
* This function takes a PCRE-style regexp and tries to match it
* within the string.
*
* @param string $body The string to look for needle in.
* @param integer $offset Start looking from here.
* @param string $reg A PCRE-style regex to match.
* @return array|boolean Returns a false if no matches found, or an array
* with the following members:
* - integer with the location of the match within $body
* - string with whatever content between offset and the match
* - string with whatever it is we matched
*/
function tln_findnxreg($body, $offset, $reg)
{
$matches = array();
$retarr = array();
$preg_rule = '%^(.*?)(' . $reg . ')%s';
preg_match($preg_rule, substr($body, $offset), $matches);
if (!isset($matches[0]) || !$matches[0]) {
$retarr = false;
} else {
$retarr[0] = $offset + strlen($matches[1]);
$retarr[1] = $matches[1];
$retarr[2] = $matches[2];
}
return $retarr;
}
/**
* This function looks for the next tag.
*
* @param string $body String where to look for the next tag.
* @param integer $offset Start looking from here.
* @return array|boolean false if no more tags exist in the body, or
* an array with the following members:
* - string with the name of the tag
* - array with attributes and their values
* - integer with tag type (1, 2, or 3)
* - integer where the tag starts (starting "<")
* - integer where the tag ends (ending ">")
* first three members will be false, if the tag is invalid.
*/
function tln_getnxtag($body, $offset)
{
if ($offset > strlen($body)) {
return false;
}
$lt = tln_findnxstr($body, $offset, '<');
if ($lt == strlen($body)) {
return false;
}
/**
* We are here:
* blah blah <tag attribute="value">
* \---------^
*/
$pos = tln_skipspace($body, $lt + 1);
if ($pos >= strlen($body)) {
return array(false, false, false, $lt, strlen($body));
}
/**
* There are 3 kinds of tags:
* 1. Opening tag, e.g.:
* <a href="blah">
* 2. Closing tag, e.g.:
* </a>
* 3. XHTML-style content-less tag, e.g.:
* <img src="blah"/>
*/
switch (substr($body, $pos, 1)) {
case '/':
$tagtype = 2;
$pos++;
break;
case '!':
/**
* A comment or an SGML declaration.
*/
if (substr($body, $pos + 1, 2) == '--') {
$gt = strpos($body, '-->', $pos);
if ($gt === false) {
$gt = strlen($body);
} else {
$gt += 2;
}
return array(false, false, false, $lt, $gt);
} else {
$gt = tln_findnxstr($body, $pos, '>');
return array(false, false, false, $lt, $gt);
}
break;
default:
/**
* Assume tagtype 1 for now. If it's type 3, we'll switch
values
* later.
*/
$tagtype = 1;
break;
}
/**
* Look for next [\W-_], which will indicate the end of the tag name.
*/
$regary = tln_findnxreg($body, $pos, '[^\w\-_]');
if ($regary == false) {
return array(false, false, false, $lt, strlen($body));
}
list($pos, $tagname, $match) = $regary;
$tagname = strtolower($tagname);
/**
* $match can be either of these:
* '>' indicating the end of the tag entirely.
* '\s' indicating the end of the tag name.
* '/' indicating that this is type-3 xhtml tag.
*
* Whatever else we find there indicates an invalid tag.
*/
switch ($match) {
case '/':
/**
* This is an xhtml-style tag with a closing / at the
* end, like so: <img src="blah"/>. Check if
it's followed
* by the closing bracket. If not, then this tag is invalid
*/
if (substr($body, $pos, 2) == '/>') {
$pos++;
$tagtype = 3;
} else {
$gt = tln_findnxstr($body, $pos, '>');
$retary = array(false, false, false, $lt, $gt);
return $retary;
}
//intentional fall-through
case '>':
return array($tagname, false, $tagtype, $lt, $pos);
break;
default:
/**
* Check if it's whitespace
*/
if (!preg_match('/\s/', $match)) {
/**
* This is an invalid tag! Look for the next closing
">".
*/
$gt = tln_findnxstr($body, $lt, '>');
return array(false, false, false, $lt, $gt);
}
break;
}
/**
* At this point we're here:
* <tagname attribute='blah'>
* \-------^
*
* At this point we loop in order to find all attributes.
*/
$attary = array();
while ($pos <= strlen($body)) {
$pos = tln_skipspace($body, $pos);
if ($pos == strlen($body)) {
/**
* Non-closed tag.
*/
return array(false, false, false, $lt, $pos);
}
/**
* See if we arrived at a ">" or "/>",
which means that we reached
* the end of the tag.
*/
$matches = array();
if (preg_match('%^(\s*)(>|/>)%s', substr($body,
$pos), $matches)) {
/**
* Yep. So we did.
*/
$pos += strlen($matches[1]);
if ($matches[2] == '/>') {
$tagtype = 3;
$pos++;
}
return array($tagname, $attary, $tagtype, $lt, $pos);
}
/**
* There are several types of attributes, with optional
* [:space:] between members.
* Type 1:
* attrname[:space:]=[:space:]'CDATA'
* Type 2:
* attrname[:space:]=[:space:]"CDATA"
* Type 3:
* attr[:space:]=[:space:]CDATA
* Type 4:
* attrname
*
* We leave types 1 and 2 the same, type 3 we check for
* '"' and convert to """ if
needed, then wrap in
* double quotes. Type 4 we convert into:
* attrname="yes".
*/
$regary = tln_findnxreg($body, $pos, '[^\w\-_]');
if ($regary == false) {
/**
* Looks like body ended before the end of tag.
*/
return array(false, false, false, $lt, strlen($body));
}
list($pos, $attname, $match) = $regary;
$attname = strtolower($attname);
/**
* We arrived at the end of attribute name. Several things possible
* here:
* '>' means the end of the tag and this is attribute
type 4
* '/' if followed by '>' means the same
thing as above
* '\s' means a lot of things -- look what it's
followed by.
* anything else means the attribute is invalid.
*/
switch ($match) {
case '/':
/**
* This is an xhtml-style tag with a closing / at the
* end, like so: <img src="blah"/>. Check if
it's followed
* by the closing bracket. If not, then this tag is invalid
*/
if (substr($body, $pos, 2) == '/>') {
$pos++;
$tagtype = 3;
} else {
$gt = tln_findnxstr($body, $pos, '>');
$retary = array(false, false, false, $lt, $gt);
return $retary;
}
//intentional fall-through
case '>':
$attary{$attname} = '"yes"';
return array($tagname, $attary, $tagtype, $lt, $pos);
break;
default:
/**
* Skip whitespace and see what we arrive at.
*/
$pos = tln_skipspace($body, $pos);
$char = substr($body, $pos, 1);
/**
* Two things are valid here:
* '=' means this is attribute type 1 2 or 3.
* \w means this was attribute type 4.
* anything else we ignore and re-loop. End of tag and
* invalid stuff will be caught by our checks at the beginning
* of the loop.
*/
if ($char == '=') {
$pos++;
$pos = tln_skipspace($body, $pos);
/**
* Here are 3 possibilities:
* "'" attribute type 1
* '"' attribute type 2
* everything else is the content of tag type 3
*/
$quot = substr($body, $pos, 1);
if ($quot == '\'') {
$regary = tln_findnxreg($body, $pos + 1,
'\'');
if ($regary == false) {
return array(false, false, false, $lt,
strlen($body));
}
list($pos, $attval, $match) = $regary;
$pos++;
$attary{$attname} = '\'' . $attval .
'\'';
} elseif ($quot == '"') {
$regary = tln_findnxreg($body, $pos + 1,
'\"');
if ($regary == false) {
return array(false, false, false, $lt,
strlen($body));
}
list($pos, $attval, $match) = $regary;
$pos++;
$attary{$attname} = '"' .
$attval . '"';
} else {
/**
* These are hateful. Look for \s, or >.
*/
$regary = tln_findnxreg($body, $pos,
'[\s>]');
if ($regary == false) {
return array(false, false, false, $lt,
strlen($body));
}
list($pos, $attval, $match) = $regary;
/**
* If it's ">" it will be caught at
the top.
*/
$attval = preg_replace('/\"/s',
'"', $attval);
$attary{$attname} = '"' . $attval .
'"';
}
} elseif (preg_match('|[\w/>]|', $char)) {
/**
* That was attribute type 4.
*/
$attary{$attname} = '"yes"';
} else {
/**
* An illegal character. Find next '>' and
return.
*/
$gt = tln_findnxstr($body, $pos, '>');
return array(false, false, false, $lt, $gt);
}
break;
}
}
/**
* The fact that we got here indicates that the tag end was never
* found. Return invalid tag indication so it gets stripped.
*/
return array(false, false, false, $lt, strlen($body));
}
/**
* Translates entities into literal values so they can be checked.
*
* @param string $attvalue the by-ref value to check.
* @param string $regex the regular expression to check against.
* @param boolean $hex whether the entities are hexadecimal.
* @return boolean True or False depending on whether there were
matches.
*/
function tln_deent(&$attvalue, $regex, $hex = false)
{
preg_match_all($regex, $attvalue, $matches);
if (is_array($matches) && sizeof($matches[0]) > 0) {
$repl = array();
for ($i = 0; $i < sizeof($matches[0]); $i++) {
$numval = $matches[1][$i];
if ($hex) {
$numval = hexdec($numval);
}
$repl{$matches[0][$i]} = chr($numval);
}
$attvalue = strtr($attvalue, $repl);
return true;
} else {
return false;
}
}
/**
* This function checks attribute values for entity-encoded values
* and returns them translated into 8-bit strings so we can run
* checks on them.
*
* @param string $attvalue A string to run entity check against.
*/
function tln_defang(&$attvalue)
{
/**
* Skip this if there aren't ampersands or backslashes.
*/
if (strpos($attvalue, '&') === false
&& strpos($attvalue, '\\') === false
) {
return;
}
do {
$m = false;
$m = $m || tln_deent($attvalue, '/\�*(\d+);*/s');
$m = $m || tln_deent($attvalue,
'/\�*((\d|[a-f])+);*/si', true);
$m = $m || tln_deent($attvalue, '/\\\\(\d+)/s', true);
} while ($m == true);
$attvalue = stripslashes($attvalue);
}
/**
* Kill any tabs, newlines, or carriage returns. Our friends the
* makers of the browser with 95% market value decided that it'd
* be funny to make "java[tab]script" be just as good as
"javascript".
*
* @param string $attvalue The attribute value before extraneous spaces
removed.
*/
function tln_unspace(&$attvalue)
{
if (strcspn($attvalue, "\t\r\n\0 ") != strlen($attvalue)) {
$attvalue = str_replace(
array("\t", "\r", "\n",
"\0", " "),
array('', '', '', '',
''),
$attvalue
);
}
}
/**
* This function runs various checks against the attributes.
*
* @param string $tagname String with the name of the tag.
* @param array $attary Array with all tag attributes.
* @param array $rm_attnames See description for tln_sanitize
* @param array $bad_attvals See description for tln_sanitize
* @param array $add_attr_to_tag See description for tln_sanitize
* @param string $trans_image_path
* @param boolean $block_external_images
* @return array with modified attributes.
*/
function tln_fixatts(
$tagname,
$attary,
$rm_attnames,
$bad_attvals,
$add_attr_to_tag,
$trans_image_path,
$block_external_images
) {
foreach($attary as $attname => $attvalue) {
/**
* See if this attribute should be removed.
*/
foreach ($rm_attnames as $matchtag => $matchattrs) {
if (preg_match($matchtag, $tagname)) {
foreach ($matchattrs as $matchattr) {
if (preg_match($matchattr, $attname)) {
unset($attary{$attname});
continue;
}
}
}
}
/**
* Remove any backslashes, entities, or extraneous whitespace.
*/
$oldattvalue = $attvalue;
tln_defang($attvalue);
if ($attname == 'style' && $attvalue !==
$oldattvalue) {
$attvalue = "idiocy";
$attary{$attname} = $attvalue;
}
tln_unspace($attvalue);
/**
* Now let's run checks on the attvalues.
* I don't expect anyone to comprehend this. If you do,
* get in touch with me so I can drive to where you live and
* shake your hand personally. :)
*/
foreach ($bad_attvals as $matchtag => $matchattrs) {
if (preg_match($matchtag, $tagname)) {
foreach ($matchattrs as $matchattr => $valary) {
if (preg_match($matchattr, $attname)) {
/**
* There are two arrays in valary.
* First is matches.
* Second one is replacements
*/
list($valmatch, $valrepl) = $valary;
$newvalue = preg_replace($valmatch, $valrepl,
$attvalue);
if ($newvalue != $attvalue) {
$attary{$attname} = $newvalue;
$attvalue = $newvalue;
}
}
}
}
}
if ($attname == 'style') {
if (preg_match('/[\0-\37\200-\377]+/', $attvalue)) {
$attary{$attname} = '"disallowed
character"';
}
preg_match_all("/url\s*\((.+)\)/si", $attvalue,
$aMatch);
if (count($aMatch)) {
foreach($aMatch[1] as $sMatch) {
$urlvalue = $sMatch;
tln_fixurl($attname, $urlvalue, $trans_image_path,
$block_external_images);
$attary{$attname} = str_replace($sMatch, $urlvalue,
$attvalue);
}
}
}
}
/**
* See if we need to append any attributes to this tag.
*/
foreach ($add_attr_to_tag as $matchtag => $addattary) {
if (preg_match($matchtag, $tagname)) {
$attary = array_merge($attary, $addattary);
}
}
return $attary;
}
function tln_fixurl($attname, &$attvalue, $trans_image_path,
$block_external_images)
{
$sQuote = '"';
$attvalue = trim($attvalue);
if ($attvalue && ($attvalue[0] =='"'||
$attvalue[0] == "'")) {
// remove the double quotes
$sQuote = $attvalue[0];
$attvalue = trim(substr($attvalue,1,-1));
}
/**
* Replace empty src tags with the blank image. src is only used
* for frames, images, and image inputs. Doing a replace should
* not affect them working as should be, however it will stop
* IE from being kicked off when src for img tags are not set
*/
if ($attvalue == '') {
$attvalue = $sQuote . $trans_image_path . $sQuote;
} else {
// first, disallow 8 bit characters and control characters
if (preg_match('/[\0-\37\200-\377]+/',$attvalue)) {
switch ($attname) {
case 'href':
$attvalue = $sQuote .
'http://invalid-stuff-detected.example.com' . $sQuote;
break;
default:
$attvalue = $sQuote . $trans_image_path . $sQuote;
break;
}
} else {
$aUrl = parse_url($attvalue);
if (isset($aUrl['scheme'])) {
switch(strtolower($aUrl['scheme'])) {
case 'mailto':
case 'http':
case 'https':
case 'ftp':
if ($attname != 'href') {
if ($block_external_images == true) {
$attvalue = $sQuote . $trans_image_path .
$sQuote;
} else {
if (!isset($aUrl['path'])) {
$attvalue = $sQuote . $trans_image_path
. $sQuote;
}
}
} else {
$attvalue = $sQuote . $attvalue . $sQuote;
}
break;
case 'outbind':
$attvalue = $sQuote . $attvalue . $sQuote;
break;
case 'cid':
$attvalue = $sQuote . $attvalue . $sQuote;
break;
default:
$attvalue = $sQuote . $trans_image_path . $sQuote;
break;
}
} else {
if (!isset($aUrl['path']) ||
$aUrl['path'] != $trans_image_path) {
$$attvalue = $sQuote . $trans_image_path . $sQuote;
}
}
}
}
}
function tln_fixstyle($body, $pos, $trans_image_path,
$block_external_images)
{
// workaround for </style> in between comments
$content = '';
$sToken = '';
$bSucces = false;
$bEndTag = false;
for ($i=$pos,$iCount=strlen($body);$i<$iCount;++$i) {
$char = $body{$i};
switch ($char) {
case '<':
$sToken = $char;
break;
case '/':
if ($sToken == '<') {
$sToken .= $char;
$bEndTag = true;
} else {
$content .= $char;
}
break;
case '>':
if ($bEndTag) {
$sToken .= $char;
if
(preg_match('/\<\/\s*style\s*\>/i',$sToken,$aMatch)) {
$newpos = $i + 1;
$bSucces = true;
break 2;
} else {
$content .= $sToken;
}
$bEndTag = false;
} else {
$content .= $char;
}
break;
case '!':
if ($sToken == '<') {
// possible comment
if (isset($body{$i+2}) && substr($body,$i,3) ==
'!--') {
$i = strpos($body,'-->',$i+3);
if ($i === false) { // no end comment
$i = strlen($body);
}
$sToken = '';
}
} else {
$content .= $char;
}
break;
default:
if ($bEndTag) {
$sToken .= $char;
} else {
$content .= $char;
}
break;
}
}
if ($bSucces == FALSE){
return array(FALSE, strlen($body));
}
/**
* First look for general BODY style declaration, which would be
* like so:
* body {background: blah-blah}
* and change it to .bodyclass so we can just assign it to a
<div>
*/
$content = preg_replace("|body(\s*\{.*?\})|si",
".bodyclass\\1", $content);
/**
* Fix url('blah') declarations.
*/
// $content =
preg_replace("|url\s*\(\s*([\'\"])\s*\S+script\s*:.*?([\'\"])\s*\)|si",
// "url(\\1$trans_image_path\\2)",
$content);
// first check for 8bit sequences and disallowed control characters
if (preg_match('/[\16-\37\200-\377]+/',$content)) {
$content = '<!-- style block removed by html filter due to
presence of 8bit characters -->';
return array($content, $newpos);
}
// remove @import line
$content =
preg_replace("/^\s*(@import.*)$/mi","\n<!-- @import rules
forbidden -->\n",$content);
$content = preg_replace("/(\\\\)?u(\\\\)?r(\\\\)?l(\\\\)?/i",
'url', $content);
preg_match_all("/url\s*\((.+)\)/si",$content,$aMatch);
if (count($aMatch)) {
$aValue = $aReplace = array();
foreach($aMatch[1] as $sMatch) {
// url value
$urlvalue = $sMatch;
tln_fixurl('style',$urlvalue, $trans_image_path,
$block_external_images);
$aValue[] = $sMatch;
$aReplace[] = $urlvalue;
}
$content = str_replace($aValue,$aReplace,$content);
}
/**
* Remove any backslashes, entities, and extraneous whitespace.
*/
$contentTemp = $content;
tln_defang($contentTemp);
tln_unspace($contentTemp);
$match = array('/\/\*.*\*\//',
'/expression/i',
'/behaviou*r/i',
'/binding/i',
'/include-source/i',
'/javascript/i',
'/script/i',
'/position/i');
$replace = array('','idiocy', 'idiocy',
'idiocy', 'idiocy', 'idiocy',
'idiocy', '');
$contentNew = preg_replace($match, $replace, $contentTemp);
if ($contentNew !== $contentTemp) {
$content = $contentNew;
}
return array($content, $newpos);
}
function tln_body2div($attary, $trans_image_path)
{
$divattary = array('class' =>
"'bodyclass'");
$text = '#000000';
$has_bgc_stl = $has_txt_stl = false;
$styledef = '';
if (is_array($attary) && sizeof($attary) > 0){
foreach ($attary as $attname=>$attvalue){
$quotchar = substr($attvalue, 0, 1);
$attvalue = str_replace($quotchar, "", $attvalue);
switch ($attname){
case 'background':
$styledef .= "background-image:
url('$trans_image_path'); ";
break;
case 'bgcolor':
$has_bgc_stl = true;
$styledef .= "background-color: $attvalue; ";
break;
case 'text':
$has_txt_stl = true;
$styledef .= "color: $attvalue; ";
break;
}
}
// Outlook defines a white bgcolor and no text color. This can lead
to
// white text on a white bg with certain themes.
if ($has_bgc_stl && !$has_txt_stl) {
$styledef .= "color: $text; ";
}
if (strlen($styledef) > 0){
$divattary{"style"} =
"\"$styledef\"";
}
}
return $divattary;
}
/**
*
* @param string $body The HTML you wish to filter
* @param array $tag_list see description above
* @param array $rm_tags_with_content see description above
* @param array $self_closing_tags see description above
* @param boolean $force_tag_closing see description above
* @param array $rm_attnames see description above
* @param array $bad_attvals see description above
* @param array $add_attr_to_tag see description above
* @param string $trans_image_path
* @param boolean $block_external_images
* @return string Sanitized html safe to show on your
pages.
*/
function tln_sanitize(
$body,
$tag_list,
$rm_tags_with_content,
$self_closing_tags,
$force_tag_closing,
$rm_attnames,
$bad_attvals,
$add_attr_to_tag,
$trans_image_path,
$block_external_images
) {
/**
* Normalize rm_tags and rm_tags_with_content.
*/
$rm_tags = array_shift($tag_list);
@array_walk($tag_list, 'tln_casenormalize');
@array_walk($rm_tags_with_content, 'tln_casenormalize');
@array_walk($self_closing_tags, 'tln_casenormalize');
/**
* See if tag_list is of tags to remove or tags to allow.
* false means remove these tags
* true means allow these tags
*/
$curpos = 0;
$open_tags = array();
$trusted = "<!-- begin tln_sanitized html -->\n";
$skip_content = false;
/**
* Take care of netscape's stupid javascript entities like
* &{alert('boo')};
*/
$body = preg_replace('/&(\{.*?\};)/si',
'&\\1', $body);
while (($curtag = tln_getnxtag($body, $curpos)) != false) {
list($tagname, $attary, $tagtype, $lt, $gt) = $curtag;
$free_content = substr($body, $curpos, $lt-$curpos);
/**
* Take care of <style>
*/
if ($tagname == "style" && $tagtype == 1){
list($free_content, $curpos) =
tln_fixstyle($body, $gt+1, $trans_image_path,
$block_external_images);
if ($free_content != FALSE){
if ( !empty($attary) ) {
$attary = tln_fixatts($tagname,
$attary,
$rm_attnames,
$bad_attvals,
$add_attr_to_tag,
$trans_image_path,
$block_external_images
);
}
$trusted .= tln_tagprint($tagname, $attary, $tagtype);
$trusted .= $free_content;
$trusted .= tln_tagprint($tagname, null, 2);
}
continue;
}
if ($skip_content == false){
$trusted .= $free_content;
}
if ($tagname != false) {
if ($tagtype == 2) {
if ($skip_content == $tagname) {
/**
* Got to the end of tag we needed to remove.
*/
$tagname = false;
$skip_content = false;
} else {
if ($skip_content == false) {
if ($tagname == "body") {
$tagname = "div";
}
if (isset($open_tags{$tagname}) &&
$open_tags{$tagname} > 0
) {
$open_tags{$tagname}--;
} else {
$tagname = false;
}
}
}
} else {
/**
* $rm_tags_with_content
*/
if ($skip_content == false) {
/**
* See if this is a self-closing type and change
* tagtype appropriately.
*/
if ($tagtype == 1
&& in_array($tagname, $self_closing_tags)
) {
$tagtype = 3;
}
/**
* See if we should skip this tag and any content
* inside it.
*/
if ($tagtype == 1
&& in_array($tagname,
$rm_tags_with_content)
) {
$skip_content = $tagname;
} else {
if (($rm_tags == false
&& in_array($tagname, $tag_list)) ||
($rm_tags == true
&& !in_array($tagname, $tag_list))
) {
$tagname = false;
} else {
/**
* Convert body into div.
*/
if ($tagname == "body"){
$tagname = "div";
$attary = tln_body2div($attary,
$trans_image_path);
}
if ($tagtype == 1) {
if (isset($open_tags{$tagname})) {
$open_tags{$tagname}++;
} else {
$open_tags{$tagname} = 1;
}
}
/**
* This is where we run other checks.
*/
if (is_array($attary) &&
sizeof($attary) > 0) {
$attary = tln_fixatts(
$tagname,
$attary,
$rm_attnames,
$bad_attvals,
$add_attr_to_tag,
$trans_image_path,
$block_external_images
);
}
}
}
}
}
if ($tagname != false && $skip_content == false) {
$trusted .= tln_tagprint($tagname, $attary, $tagtype);
}
}
$curpos = $gt + 1;
}
$trusted .= substr($body, $curpos, strlen($body) - $curpos);
if ($force_tag_closing == true) {
foreach ($open_tags as $tagname => $opentimes) {
while ($opentimes > 0) {
$trusted .= '</' . $tagname .
'>';
$opentimes--;
}
}
$trusted .= "\n";
}
$trusted .= "<!-- end tln_sanitized html -->\n";
return $trusted;
}
//
// Use the nifty htmlfilter library
//
function HTMLFilter($body, $trans_image_path, $block_external_images =
false)
{
$tag_list = array(
false,
"object",
"meta",
"html",
"head",
"base",
"link",
"frame",
"iframe",
"plaintext",
"marquee"
);
$rm_tags_with_content = array(
"script",
"applet",
"embed",
"title",
"frameset",
"xmp",
"xml"
);
$self_closing_tags = array(
"img",
"br",
"hr",
"input",
"outbind"
);
$force_tag_closing = true;
$rm_attnames = array(
"/.*/" =>
array(
// "/target/i",
"/^on.*/i",
"/^dynsrc/i",
"/^data.*/i",
"/^lowsrc.*/i"
)
);
$bad_attvals = array(
"/.*/" =>
array(
"/^src|background/i" =>
array(
array(
'/^([\'"])\s*\S+script\s*:.*([\'"])/si',
'/^([\'"])\s*mocha\s*:*.*([\'"])/si',
'/^([\'"])\s*about\s*:.*([\'"])/si'
),
array(
"\\1$trans_image_path\\2",
"\\1$trans_image_path\\2",
"\\1$trans_image_path\\2"
)
),
"/^href|action/i" =>
array(
array(
'/^([\'"])\s*\S+script\s*:.*([\'"])/si',
'/^([\'"])\s*mocha\s*:*.*([\'"])/si',
'/^([\'"])\s*about\s*:.*([\'"])/si'
),
array(
"\\1#\\1",
"\\1#\\1",
"\\1#\\1"
)
),
"/^style/i" =>
array(
array(
"/\/\*.*\*\//",
"/expression/i",
"/binding/i",
"/behaviou*r/i",
"/include-source/i",
'/position\s*:/i',
'/(\\\\)?u(\\\\)?r(\\\\)?l(\\\\)?/i',
'/url\s*\(\s*([\'"])\s*\S+script\s*:.*([\'"])\s*\)/si',
'/url\s*\(\s*([\'"])\s*mocha\s*:.*([\'"])\s*\)/si',
'/url\s*\(\s*([\'"])\s*about\s*:.*([\'"])\s*\)/si',
'/(.*)\s*:\s*url\s*\(\s*([\'"]*)\s*\S+script\s*:.*([\'"]*)\s*\)/si'
),
array(
"",
"idiocy",
"idiocy",
"idiocy",
"idiocy",
"idiocy",
"url",
"url(\\1#\\1)",
"url(\\1#\\1)",
"url(\\1#\\1)",
"\\1:url(\\2#\\3)"
)
)
)
);
if ($block_external_images) {
array_push(
$bad_attvals{'/.*/'}{'/^src|background/i'}[0],
'/^([\'\"])\s*https*:.*([\'\"])/si'
);
array_push(
$bad_attvals{'/.*/'}{'/^src|background/i'}[1],
"\\1$trans_image_path\\1"
);
array_push(
$bad_attvals{'/.*/'}{'/^style/i'}[0],
'/url\(([\'\"])\s*https*:.*([\'\"])\)/si'
);
array_push(
$bad_attvals{'/.*/'}{'/^style/i'}[1],
"url(\\1$trans_image_path\\1)"
);
}
$add_attr_to_tag = array(
"/^a$/i" =>
array('target' => '"_blank"')
);
$trusted = tln_sanitize(
$body,
$tag_list,
$rm_tags_with_content,
$self_closing_tags,
$force_tag_closing,
$rm_attnames,
$bad_attvals,
$add_attr_to_tag,
$trans_image_path,
$block_external_images
);
return $trusted;
}
ntlm_sasl_client.php000064400000014773151157643660010641 0ustar00<?php
/*
* ntlm_sasl_client.php
*
* @(#) $Id: ntlm_sasl_client.php,v 1.3 2004/11/17 08:00:37 mlemos Exp $
*
*/
define("SASL_NTLM_STATE_START", 0);
define("SASL_NTLM_STATE_IDENTIFY_DOMAIN", 1);
define("SASL_NTLM_STATE_RESPOND_CHALLENGE", 2);
define("SASL_NTLM_STATE_DONE", 3);
define("SASL_FAIL", -1);
define("SASL_CONTINUE", 1);
class ntlm_sasl_client_class
{
public $credentials = array();
public $state = SASL_NTLM_STATE_START;
public function initialize(&$client)
{
if (!function_exists($function = "mcrypt_encrypt")
|| !function_exists($function = "mhash")
) {
$extensions = array(
"mcrypt_encrypt" => "mcrypt",
"mhash" => "mhash"
);
$client->error = "the extension " .
$extensions[$function] .
" required by the NTLM SASL client class is not
available in this PHP configuration";
return (0);
}
return (1);
}
public function ASCIIToUnicode($ascii)
{
for ($unicode = "", $a = 0; $a < strlen($ascii); $a++)
{
$unicode .= substr($ascii, $a, 1) . chr(0);
}
return ($unicode);
}
public function typeMsg1($domain, $workstation)
{
$domain_length = strlen($domain);
$workstation_length = strlen($workstation);
$workstation_offset = 32;
$domain_offset = $workstation_offset + $workstation_length;
return (
"NTLMSSP\0" .
"\x01\x00\x00\x00" .
"\x07\x32\x00\x00" .
pack("v", $domain_length) .
pack("v", $domain_length) .
pack("V", $domain_offset) .
pack("v", $workstation_length) .
pack("v", $workstation_length) .
pack("V", $workstation_offset) .
$workstation .
$domain
);
}
public function NTLMResponse($challenge, $password)
{
$unicode = $this->ASCIIToUnicode($password);
$md4 = mhash(MHASH_MD4, $unicode);
$padded = $md4 . str_repeat(chr(0), 21 - strlen($md4));
$iv_size = mcrypt_get_iv_size(MCRYPT_DES, MCRYPT_MODE_ECB);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
for ($response = "", $third = 0; $third < 21; $third
+= 7) {
for ($packed = "", $p = $third; $p < $third + 7;
$p++) {
$packed .= str_pad(decbin(ord(substr($padded, $p, 1))), 8,
"0", STR_PAD_LEFT);
}
for ($key = "", $p = 0; $p < strlen($packed); $p
+= 7) {
$s = substr($packed, $p, 7);
$b = $s . ((substr_count($s, "1") % 2) ?
"0" : "1");
$key .= chr(bindec($b));
}
$ciphertext = mcrypt_encrypt(MCRYPT_DES, $key, $challenge,
MCRYPT_MODE_ECB, $iv);
$response .= $ciphertext;
}
return $response;
}
public function typeMsg3($ntlm_response, $user, $domain, $workstation)
{
$domain_unicode = $this->ASCIIToUnicode($domain);
$domain_length = strlen($domain_unicode);
$domain_offset = 64;
$user_unicode = $this->ASCIIToUnicode($user);
$user_length = strlen($user_unicode);
$user_offset = $domain_offset + $domain_length;
$workstation_unicode = $this->ASCIIToUnicode($workstation);
$workstation_length = strlen($workstation_unicode);
$workstation_offset = $user_offset + $user_length;
$lm = "";
$lm_length = strlen($lm);
$lm_offset = $workstation_offset + $workstation_length;
$ntlm = $ntlm_response;
$ntlm_length = strlen($ntlm);
$ntlm_offset = $lm_offset + $lm_length;
$session = "";
$session_length = strlen($session);
$session_offset = $ntlm_offset + $ntlm_length;
return (
"NTLMSSP\0" .
"\x03\x00\x00\x00" .
pack("v", $lm_length) .
pack("v", $lm_length) .
pack("V", $lm_offset) .
pack("v", $ntlm_length) .
pack("v", $ntlm_length) .
pack("V", $ntlm_offset) .
pack("v", $domain_length) .
pack("v", $domain_length) .
pack("V", $domain_offset) .
pack("v", $user_length) .
pack("v", $user_length) .
pack("V", $user_offset) .
pack("v", $workstation_length) .
pack("v", $workstation_length) .
pack("V", $workstation_offset) .
pack("v", $session_length) .
pack("v", $session_length) .
pack("V", $session_offset) .
"\x01\x02\x00\x00" .
$domain_unicode .
$user_unicode .
$workstation_unicode .
$lm .
$ntlm
);
}
public function start(&$client, &$message, &$interactions)
{
if ($this->state != SASL_NTLM_STATE_START) {
$client->error = "NTLM authentication state is not at
the start";
return (SASL_FAIL);
}
$this->credentials = array(
"user" => "",
"password" => "",
"realm" => "",
"workstation" => ""
);
$defaults = array();
$status = $client->GetCredentials($this->credentials,
$defaults, $interactions);
if ($status == SASL_CONTINUE) {
$this->state = SASL_NTLM_STATE_IDENTIFY_DOMAIN;
}
unset($message);
return ($status);
}
public function step(&$client, $response, &$message,
&$interactions)
{
switch ($this->state) {
case SASL_NTLM_STATE_IDENTIFY_DOMAIN:
$message =
$this->typeMsg1($this->credentials["realm"],
$this->credentials["workstation"]);
$this->state = SASL_NTLM_STATE_RESPOND_CHALLENGE;
break;
case SASL_NTLM_STATE_RESPOND_CHALLENGE:
$ntlm_response = $this->NTLMResponse(substr($response,
24, 8), $this->credentials["password"]);
$message = $this->typeMsg3(
$ntlm_response,
$this->credentials["user"],
$this->credentials["realm"],
$this->credentials["workstation"]
);
$this->state = SASL_NTLM_STATE_DONE;
break;
case SASL_NTLM_STATE_DONE:
$client->error = "NTLM authentication was finished
without success";
return (SASL_FAIL);
default:
$client->error = "invalid NTLM authentication step
state";
return (SASL_FAIL);
}
return (SASL_CONTINUE);
}
}