mirror of https://github.com/BOINC/boinc.git
273 lines
9.7 KiB
PHP
273 lines
9.7 KiB
PHP
<?php
|
|
// This file is part of BOINC.
|
|
// http://boinc.berkeley.edu
|
|
// Copyright (C) 2008 University of California
|
|
//
|
|
// BOINC 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 3 of the License, or (at your option) any later version.
|
|
//
|
|
// BOINC 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 BOINC. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
require_once('../inc/sanitize_html.inc');
|
|
|
|
// Functions that process user-supplied text (e.g. messages)
|
|
// prior to displaying it to users.
|
|
// Goals:
|
|
// - Security (don't send evil javascript)
|
|
// - obey user preferences
|
|
// - improve formatting (e.g., convert newlines to <br> tags)
|
|
|
|
class output_options {
|
|
var $bb2html; // BBCode as HTML? (on)
|
|
var $images_as_links; // Images as hyperlinks? (off)
|
|
var $link_popup; // Links in new windows? (off)
|
|
var $nl2br; // Convert newlines to <br>'s? (on)
|
|
var $htmlitems; // Convert special chars to HTML entities? (on)
|
|
var $htmlscrub; // Scrub "bad" HTML tags? (off)
|
|
var $highlight_terms;// Array of terms to be highlighted (off)
|
|
|
|
// Constructor - set the defaults.
|
|
|
|
function output_options() {
|
|
$this->bb2html = 1;
|
|
$this->images_as_links = 0;
|
|
$this->link_popup = 0;
|
|
$this->nl2br = 1;
|
|
$this->htmlitems = 1;
|
|
$this->htmlscrub = 0;
|
|
$this->highlight_terms = 0;
|
|
return true;
|
|
}
|
|
|
|
// Define the terms to be highlighted (for use with searches and such)
|
|
|
|
function setHighlightTerms($terms) {
|
|
if (is_array($terms)) {
|
|
$this->highlight_terms = $terms;
|
|
} else {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Do the actual transformation of the text.
|
|
// TODO: Make this part of the above class.
|
|
|
|
function output_transform($text, $options = NULL) {
|
|
// Options is a output_options object, defined above
|
|
if (!$options) {
|
|
$options = new output_options; // Defaults in the class definition
|
|
}
|
|
if ($options->htmlitems) {
|
|
//$text = htmlentities($text);
|
|
$text = htmlspecialchars($text);
|
|
}
|
|
if (is_array($options->highlight_terms)) {
|
|
$text = highlight_terms($text, $options->highlight_terms);
|
|
}
|
|
// if ($options->htmlscrub) {
|
|
// $text = sanitize_html($text);
|
|
// }
|
|
if ($options->nl2br) {
|
|
$text = nl2br($text);
|
|
}
|
|
if ($options->bb2html) {
|
|
$text = bb2html($text);
|
|
}
|
|
if ($options->images_as_links) {
|
|
$text = image_as_link($text);
|
|
}
|
|
if ($options->link_popup) {
|
|
$text = externalize_links($text);
|
|
}
|
|
return $text;
|
|
}
|
|
|
|
function get_output_options($user) {
|
|
$options = new output_options();
|
|
if ($user) {
|
|
if ($user->prefs->images_as_links) $options->images_as_links = 1;
|
|
if ($user->prefs->link_popup) $options->link_popup = 1;
|
|
}
|
|
return $options;
|
|
}
|
|
|
|
// Converts bbcode to proper HTML
|
|
// If $export is true, don't use BOINC CSS
|
|
|
|
function bb2html($text, $export=false) {
|
|
$urlregex = "(?:\"?)(?:(http\:\/\/)?)([^\[\"<\ ]+)(?:\"?)";
|
|
$httpsregex = "(?:\"?)https\:\/\/([^\[\"<\ ]+)(?:\"?)";
|
|
// List of allowable tags
|
|
$bbtags = array (
|
|
"@\[pre\](.*?)\[/pre\]@eis",
|
|
"@\[code\](.*?)\[/code\]@eis",
|
|
"@\[b\](.*?)\[/b\]@is",
|
|
"@\[i\](.*?)\[/i\]@is",
|
|
"@\[u\](.*?)\[/u\]@is",
|
|
"@\[sup\](.*?)\[/sup\]@is",
|
|
"@\[url=$httpsregex\](.*?)\[/url\]@is",
|
|
"@\[url\]$httpsregex\[/url\]@is",
|
|
"@\[link=$urlregex\](.*?)\[/link\]@is",
|
|
"@\[link\]$urlregex\[/link\]@is",
|
|
"@\[url=$urlregex\](.*?)\[/url\]@is",
|
|
"@\[url\]$urlregex\[/url\]@is",
|
|
"@\[quote=(.*?)\](.*?)\[/quote\]@is",
|
|
"@\[quote\](.*?)\[/quote\]@is",
|
|
"@\[list\](.*?)\[/list\]@is",
|
|
"@\[list=1\](.*?)\[/list\]@is",
|
|
"@\[img\]$urlregex\[/img\]@is",
|
|
"@\[color=(?:\"?)(.{3,8})(?:\"?)\](.*?)\[/color\]@is",
|
|
"@((?:<ol>|<ul>).*?)\n\*([^\n]+)\n(.*?(</ol>|</ul>))@is",
|
|
"@\[size=([1-9]|[0-2][0-9])\](.*?)\[/size\]@is",
|
|
"@\[mailto\](.*?)\[/mailto\]@is",
|
|
"@\[email\](.*?)\[/email\]@is",
|
|
"@\[trac\](?:\#|ticket:)(\d+)\[/trac\]@is",
|
|
"@\[trac\]wiki:(.*?)\[/trac\]@is",
|
|
"@\[trac\]changeset:(\d+)\[/trac\]@is"
|
|
//Note: The above list array member ensures we're within a list
|
|
//when doing list item transformations.
|
|
//TODO: Make sure we're not between two lists
|
|
);
|
|
|
|
// What the above tags are turned in to
|
|
if ($export) {
|
|
$htmltags = array (
|
|
"'<pre>'.stop_recursion(remove_br('\\1')).'</pre>'",
|
|
"'<code>'.stop_recursion('\\1').'</code>'",
|
|
"<b>\\1</b>",
|
|
"<i>\\1</i>",
|
|
"<u>\\1</u>",
|
|
"<sup>\\1</sup>",
|
|
"<a href=\"https://\\1\" rel=\"nofollow\">\\2</a>",
|
|
"<a href=\"https://\\1\" rel=\"nofollow\">https://\\1</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">\\3</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">http://\\2</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">\\3</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">http://\\2</a>",
|
|
"<i>\\1 wrote:</i><blockquote>\\2</blockquote>",
|
|
"<blockquote>\\1</blockquote>",
|
|
"<ul>\\1</ul><p>",
|
|
"<ol>\\1</ol><p>",
|
|
"<img hspace=\"8\" src=\"http://\\2\"> ",
|
|
"<font color=\"\\1\">\\2</font>",
|
|
"\\1<li>\\2\n\\3",
|
|
"<span style=\"font-size: \\1px;\">\\2</span>",
|
|
"<a href=\"mailto:\\1\">\\1</a>",
|
|
"<a href=\"mailto:\\1\">\\1</a>",
|
|
"<a href=\"http://boinc.berkeley.edu/trac/ticket/\\1\">#\\1</a>",
|
|
"<a href=\"http://boinc.berkeley.edu/trac/wiki/\\1\">\\1</a>",
|
|
"<a href=\"http://boinc.berkeley.edu/trac/changeset/\\1\">[\\1]</a>"
|
|
);
|
|
} else {
|
|
$htmltags = array (
|
|
"'<div class=\"pre\">'.stop_recursion(remove_br('\\1')).'</div>'",
|
|
"'<div class=\"code\">'.stop_recursion('\\1').'</div>'",
|
|
"<b>\\1</b>",
|
|
"<i>\\1</i>",
|
|
"<u>\\1</u>",
|
|
"<sup>\\1</sup>",
|
|
"<a href=\"https://\\1\" rel=\"nofollow\">\\2</a>",
|
|
"<a href=\"https://\\1\" rel=\"nofollow\">https://\\1</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">\\3</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">http://\\2</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">\\3</a>",
|
|
"<a href=\"http://\\2\" rel=\"nofollow\">http://\\2</a>",
|
|
"<div style='font-style: oblique'>\\1 wrote:</div><blockquote class='postbody'>\\2</blockquote>",
|
|
"<blockquote class='postbody'>\\1</blockquote>",
|
|
"<ul>\\1</ul><p>",
|
|
"<ol>\\1</ol><p>",
|
|
"<img hspace=\"8\" src=\"http://\\2\"> ",
|
|
"<font color=\"\\1\">\\2</font>",
|
|
"\\1<li>\\2\n\\3",
|
|
"<span style=\"font-size: \\1px;\">\\2</span>",
|
|
"<a href=\"mailto:\\1\">\\1</a>",
|
|
"<a href=\"mailto:\\1\">\\1</a>",
|
|
"<a href=\"http://boinc.berkeley.edu/trac/ticket/\\1\">#\\1</a>",
|
|
"<a href=\"http://boinc.berkeley.edu/trac/wiki/\\1\">\\1</a>",
|
|
"<a href=\"http://boinc.berkeley.edu/trac/changeset/\\1\">[\\1]</a>"
|
|
);
|
|
}
|
|
|
|
// Do the actual replacing - iterations for nested items
|
|
$lasttext = "";
|
|
$i = 0;
|
|
// $i<1000 to prevent DoS
|
|
while ($text != $lasttext && $i<1000) {
|
|
$lasttext = $text;
|
|
$text = preg_replace($bbtags,$htmltags,$text);
|
|
$i = $i + 1;
|
|
}
|
|
return $text;
|
|
}
|
|
|
|
// Removes any <br> tags added by nl2br which are not wanted,
|
|
// for example inside <pre> containers
|
|
// The original \n was retained after the br when it was added
|
|
//
|
|
function remove_br($text){
|
|
return str_replace("<br />", "", $text);
|
|
}
|
|
|
|
|
|
// Stops recursion of BBCode by escaping any [ in the given text
|
|
// @param $text The text to stop recursion in
|
|
// @return A text that no longer can cause recursion
|
|
//
|
|
function stop_recursion($text){
|
|
return str_replace("[", "[", $text);
|
|
}
|
|
|
|
// Make links open in new windows.
|
|
function externalize_links($text) {
|
|
// TODO: Convert this to PCRE
|
|
$i=0;$linkpos=true;
|
|
while (true){ //Find a link
|
|
$linkpos=strpos($text,"<a ",$i);
|
|
if ($linkpos===false) break;
|
|
$out.= substr($text,$i,$linkpos-$i)."<a target=\"_new\" "; //Replace with target='_new'
|
|
$i=$linkpos+3;
|
|
}
|
|
$out.=substr($text,$i);
|
|
return $out;
|
|
}
|
|
|
|
// Converts image tags to links to the images.
|
|
|
|
function image_as_link($text){
|
|
/* This function depends on sanitized HTML */
|
|
// Build some regex (should be a *lot* faster)
|
|
$pattern = '@<img([\S\s]+?)src=([^>]+?)>@si';
|
|
$replacement = '<a href=${2}>[Image link]</a>'; // Turns that URL into a hyperlink
|
|
$text = preg_replace($pattern, $replacement, $text);
|
|
return $text;
|
|
}
|
|
|
|
// Highlight terms in text (most likely used with searches)
|
|
|
|
function highlight_terms($text, $terms) {
|
|
$search = $terms;
|
|
$replace = array();
|
|
|
|
foreach ($search as $key => $value) {
|
|
$replace[$key] = "<span class=\"highlight\">".$value."</span>";
|
|
}
|
|
if (substr(phpversion(), 0, 1) > 4) { // PHP 4.x doesn't support str_ireplace
|
|
return str_ireplace($search, $replace, $text);
|
|
} else {
|
|
return str_replace($search, $replace, $text);
|
|
}
|
|
}
|
|
|
|
$cvs_version_tracker[]="\$Id$"; //Generated automatically - do not edit
|
|
?>
|