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https://github.com/sbrl/Pepperminty-Wiki.git
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704 lines
22 KiB
PHP
704 lines
22 KiB
PHP
<?php
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/**
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* Get the actual absolute origin of the request sent by the user.
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* @package core
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* @param array $s The $_SERVER variable contents. Defaults to $_SERVER.
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* @param bool $use_forwarded_host Whether to utilise the X-Forwarded-Host header when calculating the actual origin.
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* @return string The actual origin of the user's request.
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*/
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function url_origin( $s = false, $use_forwarded_host = false )
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{
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if($s === false) $s = $_SERVER;
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$ssl = ( ! empty( $s['HTTPS'] ) && $s['HTTPS'] == 'on' );
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$sp = strtolower( $s['SERVER_PROTOCOL'] );
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$protocol = substr( $sp, 0, strpos( $sp, '/' ) ) . ( ( $ssl ) ? 's' : '' );
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$port = $s['SERVER_PORT'];
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$port = ( ( ! $ssl && $port=='80' ) || ( $ssl && $port=='443' ) ) ? '' : ':'.$port;
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$host = ( $use_forwarded_host && isset( $s['HTTP_X_FORWARDED_HOST'] ) ) ? $s['HTTP_X_FORWARDED_HOST'] : ( isset( $s['HTTP_HOST'] ) ? $s['HTTP_HOST'] : null );
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$host = isset( $host ) ? $host : $s['SERVER_NAME'] . $port;
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return $protocol . '://' . $host;
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}
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/**
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* Get the full url, as requested by the client.
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* @package core
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* @see http://stackoverflow.com/a/8891890/1460422 This Stackoverflow answer.
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* @param array $s The $_SERVER variable. Defaults to $_SERVER.
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* @param bool $use_forwarded_host Whether to take the X-Forwarded-Host header into account.
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* @return string The full url, as requested by the client.
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*/
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function full_url( $s = false, $use_forwarded_host = false )
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{
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if($s == false) $s = $_SERVER;
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return url_origin( $s, $use_forwarded_host ) . $s['REQUEST_URI'];
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}
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/**
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* Converts a filesize into a human-readable string.
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* @package core
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* @see http://php.net/manual/en/function.filesize.php#106569 The original source
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* @author rommel
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* @author Edited by Starbeamrainbowlabs
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* @param int $bytes The number of bytes to convert.
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* @param int $decimals The number of decimal places to preserve.
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* @return string A human-readable filesize.
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*/
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function human_filesize($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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* @package core
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* @see http://goo.gl/zpgLgq The original source. No longer exists, maybe the wayback machine caught it :-(
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* @param int $time The timestamp to convert.
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* @return string The time since the given timestamp as a human-readable string.
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*/
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function human_time_since($time)
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{
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return human_time(time() - $time);
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}
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/**
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* Renders a given number of seconds as something that humans can understand more easily.
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* @package core
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* @param int $seconds The number of seconds to render.
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* @return string The rendered time.
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*/
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function human_time($seconds)
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{
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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 => $text) {
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if ($seconds < $unit) continue;
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$numberOfUnits = floor($seconds / $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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* @package core
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* @see http://in.php.net/manual/en/function.glob.php#106595 The original source
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* @author Mike
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* @param string $pattern The glob pattern to use to find filenames.
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* @param int $flags The glob flags to use when finding filenames.
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* @return array An array of the filepaths that match the given glob.
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*/
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function glob_recursive($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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* Resolves a relative path against a given base directory.
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* @apiVersion 0.20.0
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* @source https://stackoverflow.com/a/44312137/1460422
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* @param string $path The relative path to resolve.
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* @param string|null $basePath The base directory to resolve against.
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* @return string An absolute path.
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*/
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function path_resolve(string $path, string $basePath = null) {
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// Make absolute path
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if (substr($path, 0, 1) !== DIRECTORY_SEPARATOR) {
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if ($basePath === null) {
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// Get PWD first to avoid getcwd() resolving symlinks if in symlinked folder
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$path=(getenv('PWD') ?: getcwd()).DIRECTORY_SEPARATOR.$path;
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} elseif (strlen($basePath)) {
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$path=$basePath.DIRECTORY_SEPARATOR.$path;
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}
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}
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// Resolve '.' and '..'
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$components=array();
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foreach(explode(DIRECTORY_SEPARATOR, rtrim($path, DIRECTORY_SEPARATOR)) as $name) {
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if ($name === '..') {
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array_pop($components);
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} elseif ($name !== '.' && !(count($components) && $name === '')) {
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// … && !(count($components) && $name === '') - we want to keep initial '/' for abs paths
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$components[]=$name;
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}
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}
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return implode(DIRECTORY_SEPARATOR, $components);
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}
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/**
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* Gets the name of the parent page to the specified page.
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* @apiVersion 0.15.0
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* @package core
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* @param string $pagename The child page to get the parent
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* page name for.
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* @return string|bool
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*/
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function get_page_parent($pagename) {
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if(mb_strpos($pagename, "/") === false)
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return false;
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return mb_substr($pagename, 0, mb_strrpos($pagename, "/"));
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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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* @package core
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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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* @package core
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* @param string $pagename The pagename to check.
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*/
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function check_subpage_parents(string $pagename)
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{
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global $pageindex, $paths, $env;
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// Save the new pageindex and return if there aren't any more parent pages to check
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if(strpos($pagename, "/") === false)
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return save_pageindex();
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$parent_pagename = substr($pagename, 0, strrpos($pagename, "/"));
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$parent_page_filename = "$parent_pagename.md";
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if(!file_exists($env->storage_prefix . $parent_page_filename))
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{
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// This parent page doesn't exist! Create it and add it to the page index.
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touch($env->storage_prefix . $parent_page_filename, 0);
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$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 (or page name) safe.
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* A safe path / page name may not contain:
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* Forward-slashes at the beginning
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* Multiple dots in a row
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* Odd characters (e.g. ?%*:|"<>() etc.)
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* A safe path may, however, contain unicode characters such as éôà etc.
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* @package core
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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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// Old restrictive system
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//$string = preg_replace("/[^0-9a-zA-Z\_\-\ \/\.]/i", "", $string);
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// Remove reserved characters
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$string = preg_replace("/[?%*:|\"><()\\[\\]]/i", "", $string);
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// Collapse multiple dots into a single dot
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$string = preg_replace("/\.+/", ".", $string);
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// Don't allow slashes at the beginning
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$string = ltrim($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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* @todo Make this more clevererer :D
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* @package core
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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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* @package core
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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 bool Whether $needle can be found at the beginning of $haystack.
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*/
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function starts_with($haystack, $needle) {
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$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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* @package core
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* @see http://www.pontikis.net/tip/?id=16 the source
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* @see http://www.php.net/manual/en/function.strpos.php#87061 the source that the above was based on
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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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$i = mb_stripos($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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* Tests whether a string starts with a specified substring.
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* @package core
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* @param string $haystack The string to check against.
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* @param string $needle The substring to look for.
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* @return bool Whether the string starts with the specified substring.
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*/
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function startsWith($haystack, $needle) {
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return $needle === "" || strrpos($haystack, $needle, -strlen($haystack)) !== false;
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}
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/**
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* Tests whether a string ends with a given substring.
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* @package core
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* @param string $whole The string to test against.
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* @param string $end The substring test for.
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* @return bool Whether $whole ends in $end.
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*/
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function endsWith($whole, $end) {
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return (strpos($whole, $end, strlen($whole) - strlen($end)) !== false);
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}
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/**
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* Replaces the first occurrence of $find with $replace.
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* @package core
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* @param string $find The string to search for.
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* @param string $replace The string to replace the search string with.
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* @param string $subject The string ot perform the search and replace on.
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* @return string The source string after the find and replace has been performed.
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*/
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function str_replace_once($find, $replace, $subject) {
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$index = strpos($subject, $find);
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if($index !== false)
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return substr_replace($subject, $replace, $index, strlen($find));
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return $subject;
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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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* @package core
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* @see http://stackoverflow.com/a/1147952/1460422 From this stackoverflow answer
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* @author chaos
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* @author 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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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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* @package core
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* @see http://stackoverflow.com/a/1147952/1460422 From this stackoverflow answer
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* @author chaos
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* @author 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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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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* @package core
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* @see http://stackoverflow.com/a/1147952/1460422 From this stackoverflow answer
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* @author chaos
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* @author 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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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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* @package core
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* @see http://stackoverflow.com/a/1147952/1460422 From this stackoverflow answer
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* @author chaos
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* @author 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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* @package core
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* @param bool $log_trace Whether to send the stack trace to the error log.
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* @param bool $full Whether to output a full description of all the variables involved.
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* @return string A string prepresentation of a stack trace.
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*/
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function stack_trace($log_trace = true, $full = false)
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{
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$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 - $i) . ": ";
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$result .= (isset($stackEntry["file"]) ? $stackEntry["file"] : "(unknown file)") . ":" . (isset($stackEntry["line"]) ? $stackEntry["line"] : "(unknown line)") . " - ";
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if(isset($stackEntry["function"]))
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{
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$result .= "(calling " . $stackEntry["function"];
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if(isset($stackEntry["args"]) && count($stackEntry["args"]))
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{
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$result .= ": ";
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$result .= implode(", ", array_map($full ? "var_dump_ret" : "var_dump_short", $stackEntry["args"]));
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}
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}
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$result .= ")\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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* Calls var_dump() and returns the output.
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* @package core
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* @param mixed $var The thing to pass to var_dump().
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* @return string The output captured from var_dump().
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*/
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function var_dump_ret($var)
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{
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ob_start();
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var_dump($var);
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return ob_get_clean();
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}
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/**
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* Calls var_dump(), shortening the output for various types.
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* @package core
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* @param mixed $var The thing to pass to var_dump().
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* @return string A shortened version of the var_dump() output.
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*/
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function var_dump_short($var)
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{
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$result = trim(var_dump_ret($var));
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if(substr($result, 0, 6) === "object" || substr($result, 0, 5) === "array")
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{
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$result = substr($result, 0, strpos($result, " ")) . " { ... }";
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}
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return $result;
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}
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if (!function_exists('getallheaders')) {
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/**
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* Polyfill for PHP's native getallheaders() function on platforms that
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* don't have it.
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* @package core
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* @todo Identify which platforms don't have it and whether we still need this
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*/
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function getallheaders() {
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if (!is_array($_SERVER))
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return [];
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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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* Renders a timestamp in HTML.
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* @package core
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* @param int $timestamp The timestamp to render.
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* @return string HTML representing the given timestamp.
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*/
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function render_timestamp($timestamp) {
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return "<time class='cursor-query' title='" . date("l jS \of F Y \a\\t h:ia T", $timestamp) . "'>" . human_time_since($timestamp) . "</time>";
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}
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/**
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* Renders a page name in HTML.
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* @package core
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* @param object $rchange The recent change to render as a page name
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* @return string HTML representing the name of the given page.
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*/
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function render_pagename($rchange) {
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global $pageindex;
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$pageDisplayName = $rchange->page;
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if(isset($pageindex->$pageDisplayName) and !empty($pageindex->$pageDisplayName->redirect))
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$pageDisplayName = "<em>$pageDisplayName</em>";
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$pageDisplayLink = "<a href='?page=" . rawurlencode($rchange->page) . "'>$pageDisplayName</a>";
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return $pageDisplayName;
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}
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/**
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* Renders an editor's or a group of editors name(s) in HTML.
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* @package core
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* @param string $editorName The name of the editor to render.
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* @return string HTML representing the given editor's name.
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*/
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function render_editor($editorName) {
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return "<span class='editor'>✎ $editorName</span>";
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}
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/**
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* Minifies CSS. Uses simple computationally-cheap optimisations to reduce size.
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* CSS Minification ideas by Jean from catswhocode.com
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* @source http://www.catswhocode.com/blog/3-ways-to-compress-css-files-using-php
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* @apiVersion 0.20.0
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* @param string $css_str The string of CSS to minify.
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* @return string The minified CSS string.
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*/
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|
function minify_css($css_str) {
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// Remove comments
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$result = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', "", $css_str);
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// Cut down whitespace
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$result = preg_replace('/\s+/', " ", $result);
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// Remove whitespace after colons and semicolons
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|
$result = str_replace([
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" :", ": ", "; ",
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" { ", " } ", "{ ", " {", "} ", " }"
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], [
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":", ":", ";",
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"{", "}", "{", "{", "}", "}"
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], $result);
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return $result;
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}
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|
|
|
/**
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|
* Saves the settings file back to peppermint.json.
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|
* @package core
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|
* @return bool Whether the settings were saved successfully.
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|
*/
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|
function save_settings() {
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|
global $paths, $settings;
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|
return file_put_contents($paths->settings_file, json_encode($settings, JSON_PRETTY_PRINT)) !== false;
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|
}
|
|
/**
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|
* Save the page index back to disk, respecting $settings->minify_pageindex
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|
* @package core
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|
* @return bool Whether the page index was saved successfully or not.
|
|
*/
|
|
function save_pageindex() {
|
|
global $paths, $settings, $pageindex;
|
|
return file_put_contents(
|
|
$paths->pageindex,
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json_encode($pageindex, $settings->minify_pageindex ? 0 : JSON_PRETTY_PRINT)
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);
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|
}
|
|
|
|
/**
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|
* Saves the currently logged in user's data back to peppermint.json.
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|
* @package core
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|
* @return bool Whether the user's data was saved successfully. Returns false if the user isn't logged in.
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|
*/
|
|
function save_userdata() {
|
|
global $env, $settings, $paths;
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|
|
|
if(!$env->is_logged_in)
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|
return false;
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|
|
|
$settings->users->{$env->user} = $env->user_data;
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|
|
|
return save_settings();
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|
}
|
|
|
|
/**
|
|
* Figures out the path to the user page for a given username.
|
|
* Does not check to make sure the user acutally exists.
|
|
* @package core
|
|
* @param string $username The username to get the path to their user page for.
|
|
* @return string The path to the given user's page.
|
|
*/
|
|
function get_user_pagename($username) {
|
|
global $settings;
|
|
return "$settings->user_page_prefix/$username";
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|
}
|
|
/**
|
|
* Extracts a username from a user page path.
|
|
* @package core
|
|
* @param string $userPagename The suer page path to extract from.
|
|
* @return string The name of the user that the user page belongs to.
|
|
*/
|
|
function extract_user_from_userpage($userPagename) {
|
|
global $settings;
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|
$matches = [];
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|
preg_match("/$settings->user_page_prefix\\/([^\\/]+)\\/?/", $userPagename, $matches);
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|
|
|
return $matches[1];
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|
}
|
|
|
|
/**
|
|
* Sends a plain text email to a user, replacing {username} with the specified username.
|
|
* @package core
|
|
* @param string $username The username to send the email to.
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|
* @param string $subject The subject of the email.
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|
* @param string $body The body of the email.
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|
* @return bool Whether the email was sent successfully or not. Currently, this may fail if the user doesn't have a registered email address.
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|
*/
|
|
function email_user($username, $subject, $body)
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|
{
|
|
global $version, $settings;
|
|
|
|
// If the user doesn't have an email address, then we can't email them :P
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|
if(empty($settings->users->{$username}->emailAddress))
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|
return false;
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|
|
|
$subject = str_replace("{username}", $username, $subject);
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|
$body = str_replace("{username}", $username, $body);
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|
|
|
$headers = [
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|
"content-type" => "text/plain",
|
|
"x-mailer" => "$settings->sitename Pepperminty-Wiki/$version PHP/" . phpversion(),
|
|
"reply-to" => "$settings->admindetails_name <$settings->admindetails_email>"
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|
];
|
|
$compiled_headers = "";
|
|
foreach($headers as $header => $value)
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|
$compiled_headers .= "$header: $value\r\n";
|
|
|
|
return mail($settings->users->{$username}->emailAddress, $subject, $body, $compiled_headers, "-t");
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|
}
|
|
/**
|
|
* Sends a plain text email to a list of users, replacing {username} with each user's name.
|
|
* @package core
|
|
* @param string[] $usernames A list of usernames to email.
|
|
* @param string $subject The subject of the email.
|
|
* @param string $body The body of the email.
|
|
* @return int The number of emails sent successfully.
|
|
*/
|
|
function email_users($usernames, $subject, $body)
|
|
{
|
|
$emailsSent = 0;
|
|
foreach($usernames as $username)
|
|
{
|
|
$emailsSent += email_user($username, $subject, $body) ? 1 : 0;
|
|
}
|
|
return $emailsSent;
|
|
}
|
|
|
|
/**
|
|
* Recursively deletes a directory and it's contents.
|
|
* Adapted by Starbeamrainbowlabs
|
|
* @param string $path The path to the directory to delete.
|
|
* @param bool $delete_self Whether to delete the top-level directory. Set this to false to delete only a directory's contents
|
|
* @source https://stackoverflow.com/questions/4490637/recursive-delete
|
|
*/
|
|
function delete_recursive($path, $delete_self = true) {
|
|
$it = new RecursiveIteratorIterator(
|
|
new RecursiveDirectoryIterator($path),
|
|
RecursiveIteratorIterator::CHILD_FIRST
|
|
);
|
|
foreach ($it as $file) {
|
|
if (in_array($file->getBasename(), [".", ".."]))
|
|
continue;
|
|
if($file->isDir())
|
|
rmdir($file->getPathname());
|
|
else
|
|
unlink($file->getPathname());
|
|
}
|
|
if($delete_self) rmdir($path);
|
|
}
|