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https://github.com/sbrl/Pepperminty-Wiki.git
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1103 lines
36 KiB
PHP
1103 lines
36 KiB
PHP
<?php
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$start_time = microtime(true);
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{settings}
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///////////////////////////////////////////////////////////////////////////////////////////////
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/////////////// Do not edit below this line unless you know what you are doing! ///////////////
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///////////////////////////////////////////////////////////////////////////////////////////////
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$version = "{version}";
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/// Environment ///
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$env = new stdClass();
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$env->action = $settings->defaultaction;
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$env->page = "";
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$env->user = "Anonymous";
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$env->is_logged_in = false;
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$env->is_admin = false;
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$env->storage_prefix = $settings->data_storage_dir . DIRECTORY_SEPARATOR;
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/// Paths ///
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$paths = new stdClass();
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$paths->pageindex = "pageindex.json"; // The pageindex
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$paths->searchindex = "invindex.json"; // The inverted index used for searching
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$paths->idindex = "idindex.json"; // The index that converts ids to page names
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// Prepend the storage data directory to all the defined paths.
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foreach ($paths as &$path) {
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$path = $env->storage_prefix . $path;
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}
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$paths->upload_file_prefix = "Files/"; // The prefix to append to uploaded files
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session_start();
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///////// Login System /////////
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// Clear expired sessions
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if(isset($_SESSION["$settings->sessionprefix-expiretime"]) and
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$_SESSION["$settings->sessionprefix-expiretime"] < time())
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{
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// Clear the session variables
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$_SESSION = [];
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session_destroy();
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$env->is_logged_in = false;
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$env->user = "Anonymous";
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}
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if(!isset($_SESSION[$settings->sessionprefix . "-user"]) and
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!isset($_SESSION[$settings->sessionprefix . "-pass"]))
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{
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// The user is not logged in
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$env->is_logged_in = false;
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}
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else
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{
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$env->user = $_SESSION[$settings->sessionprefix . "-user"];
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$env->pass = $_SESSION[$settings->sessionprefix . "-pass"];
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if($settings->users[$env->user] == $env->pass)
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{
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// The user is logged in
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$env->is_logged_in = true;
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}
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else
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{
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// The user's login details are invalid (what is going on here?)
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// Unset the session variables, treat them as an anonymous user,
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// and get out of here
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$env->is_logged_in = false;
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$env->user = "Anonymous";
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$env->pass = "";
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// Clear the session data
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$_SESSION = []; //delete all the variables
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session_destroy(); //destroy the session
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}
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}
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//check to see if the currently logged in user is an admin
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$env->is_admin = false;
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if($env->is_logged_in)
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{
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foreach($settings->admins as $admin_username)
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{
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if($admin_username == $env->user)
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{
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$env->is_admin = true;
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break;
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}
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}
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}
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/////// Login System End ///////
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///////////////////////////////////////////////////////////////////////////////
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////////////////////////////////// Functions //////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////
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/**
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* Converts a filesize into a human-readable string.
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* From http://php.net/manual/en/function.filesize.php#106569
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* Edited by Starbeamrainbowlabs.
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* @param number $bytes The number of bytes to convert.
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* @param number $decimals The number of decimal places to preserve.
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* @return string A human-readable filesize.
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*/
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function human_filesize($bytes, $decimals = 2)
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{
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$sz = ["b", "kb", "mb", "gb", "tb", "pb", "eb", "yb", "zb"];
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$factor = floor((strlen($bytes) - 1) / 3);
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$result = round($bytes / pow(1024, $factor), $decimals);
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return $result . @$sz[$factor];
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}
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/**
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* Calculates the time since a particular timestamp and returns a
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* human-readable result.
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* From http://goo.gl/zpgLgq.
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* @param integer $time The timestamp to convert.
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* @return string The time since the given timestamp as
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* a human-readable string.
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*/
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function human_time_since($time)
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{
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$timediff = time() - $time;
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$tokens = array (
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31536000 => 'year',
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2592000 => 'month',
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604800 => 'week',
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86400 => 'day',
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3600 => 'hour',
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60 => 'minute',
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1 => 'second'
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);
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foreach ($tokens as $unit => $text) {
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if ($timediff < $unit) continue;
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$numberOfUnits = floor($timediff / $unit);
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return $numberOfUnits.' '.$text.(($numberOfUnits>1)?'s':'').' ago';
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}
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}
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/**
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* A recursive glob() function.
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* From http://in.php.net/manual/en/function.glob.php#106595
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* @param string $pattern The glob pattern to use to find filenames.
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* @param integer $flags The glob flags to use when finding filenames.
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* @return array An array of the filepaths that match the given glob.
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*/
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function glob_recursive($pattern, $flags = 0)
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{
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$files = glob($pattern, $flags);
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foreach (glob(dirname($pattern).'/*', GLOB_ONLYDIR|GLOB_NOSORT) as $dir)
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{
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$prefix = "$dir/";
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// Remove the "./" from the beginning if it exists
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if(substr($prefix, 0, 2) == "./") $prefix = substr($prefix, 2);
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$files = array_merge($files, glob_recursive($prefix . basename($pattern), $flags));
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}
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return $files;
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}
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/**
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* Gets a list of all the sub pages of the current page.
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* @param object $pageindex The pageindex to use to search.
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* @param string $pagename The name of the page to list the sub pages of.
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* @return object An object containing all the subpages and their
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* respective distances from the given page name in the pageindex tree.
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*/
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function get_subpages($pageindex, $pagename)
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{
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$pagenames = get_object_vars($pageindex);
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$result = new stdClass();
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$stem = "$pagename/";
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$stem_length = strlen($stem);
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foreach($pagenames as $entry => $value)
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{
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if(substr($entry, 0, $stem_length) == $stem)
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{
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// We found a subpage
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// Extract the subpage's key relative to the page that we are searching for
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$subpage_relative_key = substr($entry, $stem_length, -3);
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// Calculate how many times removed the current subpage is from the current page. 0 = direct descendant.
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$times_removed = substr_count($subpage_relative_key, "/");
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// Store the name of the subpage we found
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$result->$entry = $times_removed;
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}
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}
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unset($pagenames);
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return $result;
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}
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/**
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* Makes sure that a subpage's parents exist.
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* Note this doesn't check the pagename itself.
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* @param The pagename to check.
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*/
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function check_subpage_parents($pagename)
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{
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global $pageindex, $paths;
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// Save the new pageindex and return if there aren't any more parent pages to check
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if(strpos($pagename, "/") === false)
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{
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file_put_contents($paths->pageindex, json_encode($pageindex, JSON_PRETTY_PRINT));
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return;
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}
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$parent_pagename = substr($pagename, 0, strrpos($pagename, "/"));
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$parent_page_filename = "$parent_pagename.md";
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if(!file_exists($parent_page_filename))
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{
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// This parent page doesn't exist! Create it and add it to the page index.
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touch($parent_page_filename, 0);
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$newentry = new stdClass();
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$newentry->filename = $parent_page_filename;
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$newentry->size = 0;
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$newentry->lastmodified = 0;
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$newentry->lasteditor = "none";
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$pageindex->$parent_pagename = $newentry;
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}
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check_subpage_parents($parent_pagename);
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}
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/**
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* Makes a path safe.
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* Paths may only contain alphanumeric characters, spaces, underscores, and
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* dashes.
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* @param string $string The string to make safe.
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* @return string A safe version of the given string.
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*/
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function makepathsafe($string)
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{
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$string = preg_replace("/[^0-9a-zA-Z\_\-\ \/\.]/i", "", $string);
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$string = preg_replace("/\.+/", ".", $string);
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return $string;
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}
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/**
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* Hides an email address from bots by adding random html entities.
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* @param string $str The original email address
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* @return string The mangled email address.
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*/
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function hide_email($str)
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{
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$hidden_email = "";
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for($i = 0; $i < strlen($str); $i++)
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{
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if($str[$i] == "@")
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{
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$hidden_email .= "&#" . ord("@") . ";";
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continue;
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}
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if(rand(0, 1) == 0)
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$hidden_email .= $str[$i];
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else
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$hidden_email .= "&#" . ord($str[$i]) . ";";
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}
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return $hidden_email;
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}
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/**
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* Checks to see if $haystack starts with $needle.
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* @param string $haystack The string to search.
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* @param string $needle The string to search for at the beginning
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* of $haystack.
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* @return boolean Whether $needle can be found at the beginning
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* of $haystack.
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*/
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function starts_with($haystack, $needle)
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{
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$length = strlen($needle);
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return (substr($haystack, 0, $length) === $needle);
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}
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/**
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* Case-insensitively finds all occurrences of $needle in $haystack. Handles
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* UTF-8 characters correctly.
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* From http://www.pontikis.net/tip/?id=16, and
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* based on http://www.php.net/manual/en/function.strpos.php#87061
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* @param string $haystack The string to search.
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* @param string $needle The string to find.
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* @return array || false An array of match indices, or false if
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* nothing was found.
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*/
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function mb_stripos_all($haystack, $needle) {
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$s = 0; $i = 0;
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while(is_integer($i)) {
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$i = function_exists("mb_stripos") ? mb_stripos($haystack, $needle, $s) : stripos($haystack, $needle, $s);
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if(is_integer($i)) {
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$aStrPos[] = $i;
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$s = $i + (function_exists("mb_strlen") ? mb_strlen($needle) : strlen($needle));
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}
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}
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if(isset($aStrPos))
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return $aStrPos;
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else
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return false;
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}
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/**
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* Returns the system's mime type mappings, considering the first extension
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* listed to be cacnonical.
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* From http://stackoverflow.com/a/1147952/1460422 by chaos.
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* Edited by Starbeamrainbowlabs.
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* @return array An array of mime type mappings.
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*/
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function system_mime_type_extensions()
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{
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global $settings;
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$out = array();
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$file = fopen($settings->mime_extension_mappings_location, 'r');
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while(($line = fgets($file)) !== false) {
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$line = trim(preg_replace('/#.*/', '', $line));
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if(!$line)
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continue;
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$parts = preg_split('/\s+/', $line);
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if(count($parts) == 1)
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continue;
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$type = array_shift($parts);
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if(!isset($out[$type]))
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$out[$type] = array_shift($parts);
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}
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fclose($file);
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return $out;
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}
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/**
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* Converts a given mime type to it's associated file extension.
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* From http://stackoverflow.com/a/1147952/1460422 by chaos.
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* Edited by Starbeamrainbowlabs.
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* @param string $type The mime type to convert.
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* @return string The extension for the given mime type.
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*/
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function system_mime_type_extension($type)
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{
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static $exts;
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if(!isset($exts))
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$exts = system_mime_type_extensions();
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return isset($exts[$type]) ? $exts[$type] : null;
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}
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/**
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* Returns the system MIME type mapping of extensions to MIME types.
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* From http://stackoverflow.com/a/1147952/1460422 by chaos.
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* Edited by Starbeamrainbowlabs.
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* @return array An array mapping file extensions to their associated mime types.
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*/
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function system_extension_mime_types()
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{
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global $settings;
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$out = array();
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$file = fopen($settings->mime_extension_mappings_location, 'r');
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while(($line = fgets($file)) !== false) {
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$line = trim(preg_replace('/#.*/', '', $line));
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if(!$line)
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continue;
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$parts = preg_split('/\s+/', $line);
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if(count($parts) == 1)
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continue;
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$type = array_shift($parts);
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foreach($parts as $part)
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$out[$part] = $type;
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}
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fclose($file);
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return $out;
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}
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/**
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* Converts a given file extension to it's associated mime type.
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* From http://stackoverflow.com/a/1147952/1460422 by chaos.
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* Edited by Starbeamrainbowlabs.
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* @param string $ext The extension to convert.
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* @return string The mime type associated with the given extension.
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*/
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function system_extension_mime_type($ext) {
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static $types;
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if(!isset($types))
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$types = system_extension_mime_types();
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$ext = strtolower($ext);
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return isset($types[$ext]) ? $types[$ext] : null;
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}
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/**
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* Generates a stack trace.
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* @param bool $log_trace Whether to send the stack trace to the error log.
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* @return string A string prepresentation of a stack trace.
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*/
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function stack_trace($log_trace = true)
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{
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$result = "";
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$stackTrace = debug_backtrace();
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$stackHeight = count($stackTrace);
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foreach ($stackTrace as $i => $stackEntry)
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{
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$result .= "#" . ($stackHeight - $i) . " - " . $stackEntry["file"] . ":" . $stackEntry["line"] . " (" . $stackEntry["function"] . ":" . count($stackEntry["args"]) . ")\n";
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}
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if($log_trace)
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error_log($result);
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return $result;
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}
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/**
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* Polyfill getallheaders()
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*/
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if (!function_exists('getallheaders')) {
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function getallheaders()
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{
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if (!is_array($_SERVER)) {
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return array();
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}
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$headers = array();
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foreach ($_SERVER as $name => $value) {
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if (substr($name, 0, 5) == 'HTTP_') {
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$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
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}
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}
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return $headers;
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////
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////////////////////// Security and Consistency Measures //////////////////////
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///////////////////////////////////////////////////////////////////////////////
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/*
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* Sort out the pageindex. Create it if it doesn't exist, and load + parse it
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* if it does.
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*/
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if(!file_exists($paths->pageindex))
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{
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$glob_str = $env->storage_prefix . "*.md";
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$existingpages = glob_recursive($glob_str);
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// Debug statements. Uncomment when debugging the pageindex regenerator.
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// var_dump($env->storage_prefix);
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// var_dump($glob_str);
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// var_dump($existingpages);
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$pageindex = new stdClass();
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// We use a for loop here because foreach doesn't loop over new values inserted
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// while we were looping
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for($i = 0; $i < count($existingpages); $i++)
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{
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$pagefilename = $existingpages[$i];
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// Create a new entry
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$newentry = new stdClass();
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$newentry->filename = utf8_encode(substr( // Store the filename, whilst trimming the storage prefix
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$pagefilename,
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strlen(preg_replace("/^\.\//i", "", $env->storage_prefix)) // glob_recursive trim the ./ from returned filenames , so we need to as well
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));
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// Remove the `./` from the beginning if it's still hanging around
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if(substr($newentry->filename, 0, 2) == "./")
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$newentry->filename = substr($newentry->filename, 2);
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$newentry->size = filesize($pagefilename); // Store the page size
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$newentry->lastmodified = filemtime($pagefilename); // Store the date last modified
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// Todo find a way to keep the last editor independent of the page index
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$newentry->lasteditor = utf8_encode("unknown"); // Set the editor to "unknown"
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// Extract the name of the (sub)page without the ".md"
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$pagekey = utf8_encode(substr($newentry->filename, 0, -3));
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if(file_exists($env->storage_prefix . $pagekey) && // If it exists...
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!is_dir($env->storage_prefix . $pagekey)) // ...and isn't a directory
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{
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// This page (potentially) has an associated file!
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// Let's investigate.
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// Blindly add the file to the pageindex for now.
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// Future We might want to do a security check on the file later on.
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// File a bug if you think we should do this.
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$newentry->uploadedfile = true; // Yes this page does have an uploaded file associated with it
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$newentry->uploadedfilepath = $pagekey; // It's stored here
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// Work out what kind of file it really is
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$mimechecker = finfo_open(FILEINFO_MIME_TYPE);
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$newentry->uploadedfilemime = finfo_file($mimechecker, $env->storage_prefix . $pagekey);
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}
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// Debug statements. Uncomment when debugging the pageindex regenerator.
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// echo("pagekey: ");
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// var_dump($pagekey);
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// echo("newentry: ");
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// var_dump($newentry);
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// Subpage parent checker
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if(strpos($pagekey, "/") !== false)
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{
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// We have a sub page people
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// Work out what our direct parent's key must be in order to check to
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// make sure that it actually exists. If it doesn't, then we need to
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// create it.
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$subpage_parent_key = substr($pagekey, 0, strrpos($pagekey, "/"));
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$subpage_parent_filename = "$env->storage_prefix$subpage_parent_key.md";
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if(array_search($subpage_parent_filename, $existingpages) === false)
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{
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// Our parent page doesn't actually exist - create it
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touch($subpage_parent_filename, 0);
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// Furthermore, we should add this page to the list of existing pages
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// in order for it to be indexed
|
|
$existingpages[] = $subpage_parent_filename;
|
|
}
|
|
}
|
|
|
|
// Store the new entry in the new page index
|
|
$pageindex->$pagekey = $newentry;
|
|
}
|
|
file_put_contents($paths->pageindex, json_encode($pageindex, JSON_PRETTY_PRINT));
|
|
unset($existingpages);
|
|
}
|
|
else
|
|
{
|
|
$pageindex_read_start = microtime(true);
|
|
$pageindex = json_decode(file_get_contents($paths->pageindex));
|
|
header("x-pageindex-decode-time: " . round((microtime(true) - $pageindex_read_start)*1000, 3) . "ms");
|
|
}
|
|
|
|
//////////////////////////
|
|
///// Page id system /////
|
|
//////////////////////////
|
|
if(!file_exists($paths->idindex))
|
|
file_put_contents($paths->idindex, "{}");
|
|
$idindex = json_decode(file_get_contents($paths->idindex));
|
|
class ids
|
|
{
|
|
/*
|
|
* @summary Gets the page id associated with the given pagename.
|
|
*/
|
|
public static function getid($pagename)
|
|
{
|
|
global $idindex;
|
|
|
|
foreach ($idindex as $id => $entry)
|
|
{
|
|
if($entry == $pagename)
|
|
return $id;
|
|
}
|
|
|
|
// This pagename doesn't have an id - assign it one quick!
|
|
return self::assign($pagename);
|
|
}
|
|
|
|
/*
|
|
* @summary Gets the page name associated with the given page id.
|
|
*/
|
|
public static function getpagename($id)
|
|
{
|
|
global $idindex;
|
|
|
|
if(!isset($idindex->$id))
|
|
return false;
|
|
else
|
|
return $idindex->$id;
|
|
}
|
|
|
|
/*
|
|
* @summary Moves a page in the id index from $oldpagename to $newpagename.
|
|
* Note that this function doesn't perform any special checks to
|
|
* make sure that the destination name doesn't already exist.
|
|
*/
|
|
public static function movepagename($oldpagename, $newpagename)
|
|
{
|
|
global $idindex, $paths;
|
|
|
|
$pageid = self::getid($oldpagename);
|
|
$idindex->$pageid = $newpagename;
|
|
|
|
file_put_contents($paths->idindex, json_encode($idindex));
|
|
}
|
|
|
|
/*
|
|
* @summary Removes the given page name from the id index. Note that this
|
|
* function doesn't handle multiple entries with the same name.
|
|
*/
|
|
public static function deletepagename($pagename)
|
|
{
|
|
global $idindex, $paths;
|
|
|
|
// Get the id of the specified page
|
|
$pageid = self::getid($pagename);
|
|
// Remove it from the pageindex
|
|
unset($idindex->$pageid);
|
|
// Save the id index
|
|
file_put_contents($paths->idindex, json_encode($idindex));
|
|
}
|
|
|
|
/*
|
|
* @summary Assigns an id to a pagename. Doesn't check to make sure that
|
|
* pagename doesn't exist in the pageindex.
|
|
*/
|
|
protected static function assign($pagename)
|
|
{
|
|
global $idindex, $paths;
|
|
|
|
$nextid = count(array_keys(get_object_vars($idindex)));
|
|
|
|
if(isset($idindex->$nextid))
|
|
throw new Exception("The pageid is corrupt! Pepperminty Wiki generated the id $nextid, but that id is already in use.");
|
|
|
|
// Update the id index
|
|
$idindex->$nextid = utf8_encode($pagename);
|
|
|
|
// Save the id index
|
|
file_put_contents($paths->idindex, json_encode($idindex));
|
|
|
|
return $nextid;
|
|
}
|
|
}
|
|
//////////////////////////
|
|
//////////////////////////
|
|
|
|
// Work around an Opera + Syntaxtic bug where there is no margin at the left
|
|
// hand side if there isn't a query string when accessing a .php file.
|
|
if(!isset($_GET["action"]) and !isset($_GET["page"]))
|
|
{
|
|
http_response_code(302);
|
|
header("location: index.php?action=$settings->defaultaction&page=$settings->defaultpage");
|
|
exit();
|
|
}
|
|
|
|
// Make sure that the action is set
|
|
if(!isset($_GET["action"]))
|
|
$_GET["action"] = $settings->defaultaction;
|
|
// Make sure that the page is set
|
|
if(!isset($_GET["page"]) or strlen($_GET["page"]) === 0)
|
|
$_GET["page"] = $settings->defaultpage;
|
|
|
|
// Redirect the user to the safe version of the path if they entered an unsafe character
|
|
if(makepathsafe($_GET["page"]) !== $_GET["page"])
|
|
{
|
|
http_response_code(301);
|
|
header("location: index.php?action=" . rawurlencode($_GET["action"]) . "&page=" . makepathsafe($_GET["page"]));
|
|
header("x-requested-page: " . $_GET["page"]);
|
|
header("x-actual-page: " . makepathsafe($_GET["page"]));
|
|
exit();
|
|
}
|
|
|
|
// Finish setting up the environment object
|
|
$env->page = $_GET["page"];
|
|
$env->action = strtolower($_GET["action"]);
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//////////////////////////////// HTML fragments ////////////////////////////////
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
class page_renderer
|
|
{
|
|
public static $html_template = "<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset='utf-8' />
|
|
<title>{title}</title>
|
|
<meta name='viewport' content='width=device-width, initial-scale=1' />
|
|
<link rel='shortcut-icon' href='{favicon-url}' />
|
|
<link rel='icon' href='{favicon-url}' />
|
|
{header-html}
|
|
</head>
|
|
<body>
|
|
{body}
|
|
<!-- Took {generation-time-taken}ms to generate -->
|
|
</body>
|
|
</html>
|
|
";
|
|
|
|
public static $main_content_template = "{navigation-bar}
|
|
<h1 class='sitename'>{sitename}</h1>
|
|
<main>
|
|
{content}
|
|
</main>
|
|
|
|
<footer>
|
|
<p>{footer-message}</p>
|
|
<p>Powered by Pepperminty Wiki {version}, which was built by <a href='//starbeamrainbowlabs.com/'>Starbeamrainbowlabs</a>. Send bugs to 'bugs at starbeamrainbowlabs dot com' or <a href='//github.com/sbrl/Pepperminty-Wiki' title='Github Issue Tracker'>open an issue</a>.</p>
|
|
<p>Your local friendly administrators are {admins-name-list}.</p>
|
|
<p>This wiki is managed by <a href='mailto:{admin-details-email}'>{admin-details-name}</a>.</p>
|
|
</footer>
|
|
{navigation-bar-bottom}
|
|
{all-pages-datalist}";
|
|
public static $minimal_content_template = "<main class='printable'>{content}</main>
|
|
<footer class='printable'>
|
|
<hr class='footerdivider' />
|
|
<p><em>From {sitename}, which is managed by {admin-details-name}.</em></p>
|
|
<p>{footer-message}</p>
|
|
<p><em>Timed at {generation-date}</em></p>
|
|
<p><em>Powered by Pepperminty Wiki {version}.</em></p>
|
|
</footer>";
|
|
|
|
// An array of functions that have been registered to process the
|
|
// find / replace array before the page is rendered. Note that the function
|
|
// should take a *reference* to an array as its only argument.
|
|
protected static $part_processors = [];
|
|
|
|
// Registers a function as a part post processor.
|
|
public static function register_part_preprocessor($function)
|
|
{
|
|
global $settings;
|
|
|
|
// Make sure that the function we are about to register is valid
|
|
if(!is_callable($function))
|
|
{
|
|
http_response_code(500);
|
|
$admin_name = $settings->admindetails["name"];
|
|
$admin_email = hide_email($settings->admindetails["email"]);
|
|
exit(page_renderer::render("$settings->sitename - Module Error", "<p>$settings->sitename has got a misbehaving module installed that tried to register an invalid HTML handler with the page renderer. Please contact $settings->sitename's administrator $admin_name at <a href='mailto:$admin_email'>$admin_email</a>."));
|
|
}
|
|
|
|
self::$part_processors[] = $function;
|
|
|
|
return true;
|
|
}
|
|
|
|
public static function render($title, $content, $body_template = false)
|
|
{
|
|
global $settings, $start_time, $version;
|
|
|
|
if($body_template === false)
|
|
$body_template = self::$main_content_template;
|
|
|
|
if(strlen($settings->logo_url) > 0)
|
|
{
|
|
// A logo url has been specified
|
|
$logo_html = "<img class='logo" . (isset($_GET["printable"]) ? " small" : "") . "' src='$settings->logo_url' />";
|
|
switch($settings->logo_position)
|
|
{
|
|
case "left":
|
|
$logo_html = "$logo_html $settings->sitename";
|
|
break;
|
|
case "right":
|
|
$logo_html .= " $settings->sitename";
|
|
break;
|
|
default:
|
|
throw new Exception("Invalid logo_position '$settings->logo_position'. Valid values are either \"left\" or \"right\" and are case sensitive.");
|
|
}
|
|
}
|
|
|
|
$parts = [
|
|
"{body}" => $body_template,
|
|
|
|
"{sitename}" => $logo_html,
|
|
"{version}" => $version,
|
|
"{favicon-url}" => $settings->favicon,
|
|
"{header-html}" => self::get_header_html(),
|
|
|
|
"{navigation-bar}" => self::render_navigation_bar($settings->nav_links, $settings->nav_links_extra, "top"),
|
|
"{navigation-bar-bottom}" => self::render_navigation_bar($settings->nav_links_bottom, [], "bottom"),
|
|
|
|
"{admin-details-name}" => $settings->admindetails["name"],
|
|
"{admin-details-email}" => $settings->admindetails["email"],
|
|
|
|
"{admins-name-list}" => implode(", ", $settings->admins),
|
|
|
|
"{generation-date}" => date("l jS \of F Y \a\\t h:ia T"),
|
|
|
|
"{all-pages-datalist}" => self::generate_all_pages_datalist(),
|
|
|
|
"{footer-message}" => $settings->footer_message,
|
|
|
|
/// Secondary Parts ///
|
|
|
|
"{content}" => $content,
|
|
"{title}" => $title,
|
|
];
|
|
|
|
// Pass the parts through the part processors
|
|
foreach(self::$part_processors as $function)
|
|
{
|
|
$function($parts);
|
|
}
|
|
|
|
$result = self::$html_template;
|
|
|
|
$result = str_replace(array_keys($parts), array_values($parts), $result);
|
|
|
|
$result = str_replace([
|
|
|
|
], [
|
|
], $result);
|
|
|
|
$result = str_replace("{generation-time-taken}", round((microtime(true) - $start_time)*1000, 2), $result);
|
|
return $result;
|
|
}
|
|
public static function render_main($title, $content)
|
|
{
|
|
return self::render($title, $content, self::$main_content_template);
|
|
}
|
|
public static function render_minimal($title, $content)
|
|
{
|
|
return self::render($title, $content, self::$minimal_content_template);
|
|
}
|
|
|
|
public static function get_header_html()
|
|
{
|
|
global $settings;
|
|
$result = self::get_css_as_html();
|
|
|
|
if(!empty($settings->enable_math_rendering))
|
|
$result .= "<script type='text/x-mathjax-config'>
|
|
MathJax.Hub.Config({
|
|
tex2jax: {
|
|
inlineMath: [ ['$','$'], ['\\\\(','\\\\)'] ],
|
|
processEscapes: true,
|
|
skipTags: ['script','noscript','style','textarea','pre','code']
|
|
}
|
|
});
|
|
</script>
|
|
<script async src='https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-MML-AM_CHTML'></script>";
|
|
|
|
return $result;
|
|
}
|
|
public static function get_css_as_html()
|
|
{
|
|
global $settings;
|
|
|
|
if(preg_match("/^[^\/]*\/\/|^\//", $settings->css))
|
|
return "<link rel='stylesheet' href='$settings->css' />";
|
|
else
|
|
{
|
|
$css = $settings->css;
|
|
if(!empty($settings->optimize_pages))
|
|
{
|
|
// CSS Minification ideas by Jean from catswhocode.com
|
|
// Link: http://www.catswhocode.com/blog/3-ways-to-compress-css-files-using-php
|
|
// Remove comments
|
|
$css = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', "", $css);
|
|
// Cut down whitespace
|
|
$css = preg_replace('/\s+/', " ", $css);
|
|
// Remove whitespace after colons and semicolons
|
|
$css = str_replace([
|
|
" :",
|
|
": ",
|
|
"; ",
|
|
" { ",
|
|
" } "
|
|
], [
|
|
":",
|
|
":",
|
|
";",
|
|
"{",
|
|
"}"
|
|
], $css);
|
|
|
|
}
|
|
return "<style>$css</style>";
|
|
}
|
|
}
|
|
|
|
public static $nav_divider = "<span class='nav-divider inflexible'> | </span>";
|
|
|
|
/**
|
|
* Renders a navigation bar from an array of links. See
|
|
* $settings->nav_links for format information.
|
|
* @param array $nav_links The links to add to the navigation bar.
|
|
* @param array $nav_links_extra The extra nav links to add to
|
|
* the "More..." menu.
|
|
*/
|
|
public static function render_navigation_bar($nav_links, $nav_links_extra, $class = "")
|
|
{
|
|
global $settings, $env;
|
|
$result = "<nav class='$class'>\n";
|
|
|
|
// Loop over all the navigation links
|
|
foreach($nav_links as $item)
|
|
{
|
|
if(is_string($item))
|
|
{
|
|
// The item is a string
|
|
switch($item)
|
|
{
|
|
//keywords
|
|
case "user-status":
|
|
if($env->is_logged_in)
|
|
{
|
|
$result .= "<span class='inflexible'>Logged in as " . self::render_username($env->user) . ".</span> "/* . page_renderer::$nav_divider*/;
|
|
$result .= "<span><a href='index.php?action=logout'>Logout</a></span>";
|
|
$result .= page_renderer::$nav_divider;
|
|
}
|
|
else
|
|
$result .= "<span class='inflexible'>Browsing as Anonymous.</span>" . /*page_renderer::$nav_divider . */"<span><a href='index.php?action=login&returnto=" . rawurlencode($_SERVER["REQUEST_URI"]) . "'>Login</a></span>" . page_renderer::$nav_divider;
|
|
break;
|
|
|
|
case "search": // Displays a search bar
|
|
$result .= "<span class='inflexible'><form method='get' action='index.php' style='display: inline;'><input type='search' name='page' list='allpages' placeholder='Type a page name here and hit enter' /><input type='hidden' name='search-redirect' value='true' /></form></span>";
|
|
break;
|
|
|
|
case "divider": // Displays a divider
|
|
$result .= page_renderer::$nav_divider;
|
|
break;
|
|
|
|
case "menu":
|
|
$result .= "<span class='inflexible nav-more'><label for='more-menu-toggler'>More...</label>
|
|
<input type='checkbox' class='off-screen' id='more-menu-toggler' />";
|
|
$result .= page_renderer::render_navigation_bar($nav_links_extra, [], "nav-more-menu");
|
|
$result .= "</span>";
|
|
break;
|
|
|
|
// It isn't a keyword, so just output it directly
|
|
default:
|
|
$result .= "<span>$item</span>";
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Output the item as a link to a url
|
|
$result .= "<span><a href='" . str_replace("{page}", $env->page, $item[1]) . "'>$item[0]</a></span>";
|
|
}
|
|
}
|
|
|
|
$result .= "</nav>";
|
|
return $result;
|
|
}
|
|
public static function render_username($name)
|
|
{
|
|
global $settings;
|
|
$result = "";
|
|
if(in_array($name, $settings->admins))
|
|
$result .= $settings->admindisplaychar;
|
|
$result .= $name;
|
|
|
|
return $result;
|
|
}
|
|
|
|
public static function generate_all_pages_datalist()
|
|
{
|
|
global $pageindex;
|
|
$arrayPageIndex = get_object_vars($pageindex);
|
|
ksort($arrayPageIndex);
|
|
$result = "<datalist id='allpages'>\n";
|
|
foreach($arrayPageIndex as $pagename => $pagedetails)
|
|
{
|
|
$result .= "\t\t\t<option value='$pagename' />\n";
|
|
}
|
|
$result .= "\t\t</datalist>";
|
|
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////
|
|
///// Extra consistency measures /////
|
|
//////////////////////////////////////
|
|
// Redirect to the search page if there isn't a page with the requested name
|
|
if(!isset($pageindex->{$env->page}) and isset($_GET["search-redirect"]))
|
|
{
|
|
http_response_code(307);
|
|
$url = "?action=search&query=" . rawurlencode($env->page);
|
|
header("location: $url");
|
|
exit(page_renderer::render("Non existent page - $settings->sitename", "<p>There isn't a page on $settings->sitename with that name. However, you could <a href='$url'>search for this page name</a> in other pages.</p>
|
|
<p>Alternatively, you could <a href='?action=edit&page=" . rawurlencode($env->page) . "&create=true'>create this page</a>.</p>"));
|
|
}
|
|
|
|
// Redirect the user to the login page if:
|
|
// - A login is required to view this wiki
|
|
// - The user isn't already requesting the login page
|
|
// Note we use $_GET here because $env->action isn't populated at this point
|
|
if($settings->require_login_view === true && // If this site requires a login in order to view pages
|
|
!$env->is_logged_in && // And the user isn't logged in
|
|
!in_array($_GET["action"], [ "login", "checklogin" ])) // And the user isn't trying to login
|
|
{
|
|
// Redirect the user to the login page
|
|
http_response_code(307);
|
|
$url = "?action=login&returnto=" . rawurlencode($_SERVER["REQUEST_URI"]) . "&required=true";
|
|
header("location: $url");
|
|
exit(page_renderer::render("Login required - $settings->sitename", "<p>$settings->sitename requires that you login before you are able to access it.</p>
|
|
<p><a href='$url'>Login</a>.</p>"));
|
|
}
|
|
//////////////////////////////////////
|
|
//////////////////////////////////////
|
|
|
|
//////////////////////////
|
|
/// Module functions ///
|
|
//////////////////////////
|
|
// These functions are //
|
|
// used by modules to //
|
|
// register themselves //
|
|
// or new pages. //
|
|
//////////////////////////
|
|
$modules = []; // List that contains all the loaded modules
|
|
// Function to register a module
|
|
function register_module($moduledata)
|
|
{
|
|
global $modules;
|
|
//echo("registering module\n");
|
|
//var_dump($moduledata);
|
|
$modules[] = $moduledata;
|
|
}
|
|
/**
|
|
* Checks to see whether a module with the given id exists.
|
|
* @param string $id The id to search for.
|
|
* @return bool Whether a module is currently loaded with the given id.
|
|
*/
|
|
function module_exists($id)
|
|
{
|
|
global $modules;
|
|
foreach($modules as $module)
|
|
{
|
|
if($module["id"] == $id)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Function to register an action handler
|
|
$actions = new stdClass();
|
|
function add_action($action_name, $func)
|
|
{
|
|
global $actions;
|
|
$actions->$action_name = $func;
|
|
}
|
|
|
|
$parsers = [
|
|
"none" => function() {
|
|
throw new Exception("No parser registered!");
|
|
}
|
|
];
|
|
/**
|
|
* Registers a new parser.
|
|
* @param string $name The name of the new parser to register.
|
|
* @param function $parser_code The function to register as a new parser.
|
|
*/
|
|
function add_parser($name, $parser_code)
|
|
{
|
|
global $parsers;
|
|
if(isset($parsers[$name]))
|
|
throw new Exception("Can't register parser with name '$name' because a parser with that name already exists.");
|
|
|
|
$parsers[$name] = $parser_code;
|
|
}
|
|
function parse_page_source($source)
|
|
{
|
|
global $settings, $parsers;
|
|
if(!isset($parsers[$settings->parser]))
|
|
exit(page_renderer::render_main("Parsing error - $settings->sitename", "<p>Parsing some page source data failed. This is most likely because $settings->sitename has the parser setting set incorrectly. Please contact <a href='mailto:" . hide_email($settings->admindetails["email"]) . "'>" . $settings->admindetails["name"] . "</a>, your $settings->sitename Administrator."));
|
|
|
|
/* Not needed atm because escaping happens when saving, not when rendering *
|
|
if($settings->clean_raw_html)
|
|
$source = htmlentities($source, ENT_QUOTES | ENT_HTML5);
|
|
*/
|
|
return $parsers[$settings->parser]($source);
|
|
}
|
|
|
|
// Function to
|
|
$save_preprocessors = [];
|
|
/**
|
|
* Register a new proprocessor that will be executed just before
|
|
* an edit is saved.
|
|
* @param function $func The function to register.
|
|
*/
|
|
function register_save_preprocessor($func)
|
|
{
|
|
global $save_preprocessors;
|
|
$save_preprocessors[] = $func;
|
|
}
|
|
|
|
$help_sections = [];
|
|
/**
|
|
* Adds a new help section to the help page.
|
|
* @param string $index The string to index the new section under.
|
|
* @param string $title The title to display above the section.
|
|
* @param string $content The content to display.
|
|
*/
|
|
function add_help_section($index, $title, $content)
|
|
{
|
|
global $help_sections;
|
|
|
|
$help_sections[$index] = [
|
|
"title" => $title,
|
|
"content" => $content
|
|
];
|
|
}
|
|
|
|
if(!empty($settings->enable_math_rendering))
|
|
add_help_section("22-Mathematical-Expressions", "Methematical Expressions", "<p>$settings->sitename supports rendering of mathematical expressions. Mathematical expressions can be included practically anywhere in your page. Expressions should be written in LaTeX and enclosed in dollar signs like this: <code>$x^2$</code>.</p>
|
|
<p>Note that expression parsing is done on the viewer's computer with javascript (specifically MathJax) and not by $settings->sitename directly (also called client side rendering).</p>");
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
|
|
// %next_module% //
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
|
|
// Execute each module's code
|
|
foreach($modules as $moduledata)
|
|
{
|
|
$moduledata["code"]();
|
|
}
|
|
// Make sure that the credits page exists
|
|
if(!isset($actions->credits))
|
|
{
|
|
exit(page_renderer::render_main("Error - $settings->$sitename", "<p>No credits page detected. The credits page is a required module!</p>"));
|
|
}
|
|
|
|
// Perform the appropriate action
|
|
$action_name = $env->action;
|
|
if(isset($actions->$action_name))
|
|
{
|
|
$req_action_data = $actions->$action_name;
|
|
$req_action_data();
|
|
}
|
|
else
|
|
{
|
|
exit(page_renderer::render_main("Error - $settings->sitename", "<p>No action called " . strtolower($_GET["action"]) ." has been registered. Perhaps you are missing a module?</p>"));
|
|
}
|
|
|
|
?>
|