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<?php
/**
* Utilities for collecting data from config files
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Harry Fuecks <hfuecks@gmail.com>
*/
/*
* line prefix used to negate single value config items
* (scheme.conf & stopwords.conf), e.g.
* !gopher
*/
use dokuwiki\Extension\AuthPlugin;
use dokuwiki\Extension\Event;
const DOKU_CONF_NEGATION = '!';
/**
* Returns the (known) extension and mimetype of a given filename
*
* If $knownonly is true (the default), then only known extensions
* are returned.
*
* @author Andreas Gohr <andi@splitbrain.org>
*
* @param string $file file name
* @param bool $knownonly
* @return array with extension, mimetype and if it should be downloaded
*/
function mimetype($file, $knownonly = true)
{
$mtypes = getMimeTypes(); // known mimetypes
$ext = strrpos($file, '.');
if ($ext === false) {
return [false, false, false];
}
$ext = strtolower(substr($file, $ext + 1));
if (!isset($mtypes[$ext])) {
if ($knownonly) {
return [false, false, false];
} else {
return [$ext, 'application/octet-stream', true];
}
}
if ($mtypes[$ext][0] == '!') {
return [$ext, substr($mtypes[$ext], 1), true];
} else {
return [$ext, $mtypes[$ext], false];
}
}
/**
* returns a hash of mimetypes
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function getMimeTypes()
{
static $mime = null;
if (!$mime) {
$mime = retrieveConfig('mime', 'confToHash');
$mime = array_filter($mime);
}
return $mime;
}
/**
* returns a hash of acronyms
*
* @author Harry Fuecks <hfuecks@gmail.com>
*/
function getAcronyms()
{
static $acronyms = null;
if (!$acronyms) {
$acronyms = retrieveConfig('acronyms', 'confToHash');
$acronyms = array_filter($acronyms, 'strlen');
}
return $acronyms;
}
/**
* returns a hash of smileys
*
* @author Harry Fuecks <hfuecks@gmail.com>
*/
function getSmileys()
{
static $smileys = null;
if (!$smileys) {
$smileys = retrieveConfig('smileys', 'confToHash');
$smileys = array_filter($smileys, 'strlen');
}
return $smileys;
}
/**
* returns a hash of entities
*
* @author Harry Fuecks <hfuecks@gmail.com>
*/
function getEntities()
{
static $entities = null;
if (!$entities) {
$entities = retrieveConfig('entities', 'confToHash');
$entities = array_filter($entities, 'strlen');
}
return $entities;
}
/**
* returns a hash of interwikilinks
*
* @author Harry Fuecks <hfuecks@gmail.com>
*/
function getInterwiki()
{
static $wikis = null;
if (!$wikis) {
$wikis = retrieveConfig('interwiki', 'confToHash', [true]);
$wikis = array_filter($wikis, 'strlen');
//add sepecial case 'this'
$wikis['this'] = DOKU_URL . '{NAME}';
}
return $wikis;
}
/**
* Returns the jquery script URLs for the versions defined in lib/scripts/jquery/versions
*
* @trigger CONFUTIL_CDN_SELECT
* @return array
*/
function getCdnUrls()
{
global $conf;
// load version info
$versions = [];
$lines = file(DOKU_INC . 'lib/scripts/jquery/versions');
foreach ($lines as $line) {
$line = trim(preg_replace('/#.*$/', '', $line));
if ($line === '') continue;
[$key, $val] = sexplode('=', $line, 2, '');
$key = trim($key);
$val = trim($val);
$versions[$key] = $val;
}
$src = [];
$data = ['versions' => $versions, 'src' => &$src];
$event = new Event('CONFUTIL_CDN_SELECT', $data);
if ($event->advise_before()) {
10BC8
if (!$conf['jquerycdn']) {
$jqmod = md5(implode('-', $versions));
$src[] = DOKU_BASE . 'lib/exe/jquery.php' . '?tseed=' . $jqmod;
} elseif ($conf['jquerycdn'] == 'jquery') {
$src[] = sprintf('https://code.jquery.com/jquery-%s.min.js', $versions['JQ_VERSION']);
$src[] = sprintf('https://code.jquery.com/ui/%s/jquery-ui.min.js', $versions['JQUI_VERSION']);
} elseif ($conf['jquerycdn'] == 'cdnjs') {
$src[] = sprintf(
'https://cdnjs.cloudflare.com/ajax/libs/jquery/%s/jquery.min.js',
$versions['JQ_VERSION']
);
$src[] = sprintf(
'https://cdnjs.cloudflare.com/ajax/libs/jqueryui/%s/jquery-ui.min.js',
$versions['JQUI_VERSION']
);
}
}
$event->advise_after();
return $src;
}
/**
* returns array of wordblock patterns
*
*/
function getWordblocks()
{
static $wordblocks = null;
if (!$wordblocks) {
$wordblocks = retrieveConfig('wordblock', 'file', null, 'array_merge_with_removal');
}
return $wordblocks;
}
/**
* Gets the list of configured schemes
*
* @return array the schemes
*/
function getSchemes()
{
static $schemes = null;
if (!$schemes) {
$schemes = retrieveConfig('scheme', 'file', null, 'array_merge_with_removal');
$schemes = array_map('trim', $schemes);
$schemes = preg_replace('/^#.*/', '', $schemes);
$schemes = array_filter($schemes);
}
return $schemes;
}
/**
* Builds a hash from an array of lines
*
* If $lower is set to true all hash keys are converted to
* lower case.
*
* @author Harry Fuecks <hfuecks@gmail.com>
* @author Andreas Gohr <andi@splitbrain.org>
* @author Gina Haeussge <gina@foosel.net>
*
* @param array $lines
* @param bool $lower
*
* @return array
*/
function linesToHash($lines, $lower = false)
{
$conf = [];
// remove BOM
if (isset($lines[0]) && str_starts_with($lines[0], pack('CCC', 0xef, 0xbb, 0xbf)))
$lines[0] = substr($lines[0], 3);
foreach ($lines as $line) {
//ignore comments (except escaped ones)
$line = preg_replace('/(?<![&\\\\])#.*$/', '', $line);
$line = str_replace('\\#', '#', $line);
$line = trim($line);
if ($line === '') continue;
$line = preg_split('/\s+/', $line, 2);
$line = array_pad($line, 2, '');
// Build the associative array
if ($lower) {
$conf[strtolower($line[0])] = $line[1];
} else {
$conf[$line[0]] = $line[1];
}
}
return $conf;
}
/**
* Builds a hash from a configfile
*
* If $lower is set to true all hash keys are converted to
* lower case.
*
* @author Harry Fuecks <hfuecks@gmail.com>
* @author Andreas Gohr <andi@splitbrain.org>
* @author Gina Haeussge <gina@foosel.net>
*
* @param string $file
* @param bool $lower
*
* @return array
*/
function confToHash($file, $lower = false)
{
$conf = [];
$lines = @file($file);
if (!$lines) return $conf;
return linesToHash($lines, $lower);
}
/**
* Read a json config file into an array
*
* @param string $file
* @return array
* @throws JsonException
*/
function jsonToArray($file)
{
$json = file_get_contents($file);
$conf = json_decode($json, true, 512, JSON_THROW_ON_ERROR);
if ($conf === null) {
return [];
}
return $conf;
}
/**
* Retrieve the requested configuration information
*
* @author Chris Smith <chris@jalakai.co.uk>
*
* @param string $type the configuration settings to be read, must correspond to a key/array in $config_cascade
* @param callback $fn the function used to process the configuration file into an array
* @param array $params optional additional params to pass to the callback
* @param callback $combine the function used to combine arrays of values read from different configuration files;
* the function takes two parameters,
* $combined - the already read & merged configuration values
* $new - array of config values from the config cascade file being currently processed
* and returns an array of the merged configuration values.
* @return array configuration values
*/
function retrieveConfig($type, $fn, $params = null, $combine = 'array_merge')
{
global $config_cascade;
if (!is_array($params)) $params = [];
$combined = [];
if (!is_array($config_cascade[$type])) trigger_error('Missing config cascade for "' . $type . '"', E_USER_WARNING);
foreach (['default', 'local', 'protected'] as $config_group) {
if (empty($config_cascade[$type][$config_group])) continue;
foreach ($config_cascade[$type][$config_group] as $file) {
if (file_exists($file)) {
$config = call_user_func_array($fn, array_merge([$file], $params));
$combined = $combine($combined, $config);
}
}
}
return $combined;
}
/**
* Include the requested configuration information
*
* @author Chris Smith <chris@jalakai.co.uk>
*
* @param string $type the configuration settings to be read, must correspond to a key/array in $config_cascade
* @return array list of files, default before local before protected
*/
function getConfigFiles($type)
{
global $config_cascade;
$files = [];
if (!is_array($config_cascade[$type])) trigger_error('Missing config cascade for "' . $type . '"', E_USER_WARNING);
foreach (['default', 'local', 'protected'] as $config_group) {
if (empty($config_cascade[$type][$config_group])) continue;
$files = array_merge($files, $config_cascade[$type][$config_group]);
}
return $files;
}
/**
* check if the given action was disabled in config
*
* @author Andreas Gohr <andi@splitbrain.org>
* @param string $action
* @returns boolean true if enabled, false if disabled
*/
function actionOK($action)
{
static $disabled = null;
if (is_null($disabled) || defined('SIMPLE_TEST')) {
global $conf;
/** @var AuthPlugin $auth */
global $auth;
// prepare disabled actions array and handle legacy options
$disabled = explode(',', $conf['disableactions']);
$disabled = array_map('trim', $disabled);
if (
(isset($conf['openregister']) && !$conf['openregister']) || !$auth instanceof AuthPlugin
|| !$auth->canDo('addUser')
) {
$disabled[] = 'register';
}
if (
(isset($conf['resendpasswd']) && !$conf['resendpasswd']) || !$auth instanceof AuthPlugin
|| !$auth->canDo('modPass')
) {
$disabled[] = 'resendpwd';
}
if ((isset($conf['subscribers']) && !$conf['subscribers']) || !$auth instanceof AuthPlugin) {
$disabled[] = 'subscribe';
}
if (!$auth instanceof AuthPlugin || !$auth->canDo('Profile')) {
$disabled[] = 'profile';
}
if (!$auth instanceof AuthPlugin || !$auth->canDo('delUser')) {
$disabled[] = 'profile_delete';
}
if (!$auth instanceof AuthPlugin) {
$disabled[] = 'login';
}
if (!$auth instanceof AuthPlugin || !$auth->canDo('logout')) {
$disabled[] = 'logout';
}
$disabled = array_unique($disabled);
}
return !in_array($action, $disabled);
}
/**
* check if headings should be used as link text for the specified link type
*
* @author Chris Smith <chris@jalakai.co.uk>
*
* @param string $linktype 'content'|'navigation', content applies to links in wiki text
* navigation applies to all other links
* @return boolean true if headings should be used for $linktype, false otherwise
*/
function useHeading($linktype)
{
static $useHeading = null;
if (defined('DOKU_UNITTEST')) $useHeading = null; // don't cache during unit tests
if (is_null($useHeading)) {
global $conf;
if (!empty($conf['useheading'])) {
switch ($conf['useheading']) {
case 'content':
$useHeading['content'] = true;
break;
case 'navigation':
$useHeading['navigation'] = true;
break;
default:
$useHeading['content'] = true;
$useHeading['navigation'] = true;
}
} else {
$useHeading = [];
}
}
return (!empty($useHeading[$linktype]));
}
/**
* obscure config data so information isn't plain text
*
* @param string $str data to be encoded
* @param string $code encoding method, values: plain, base64, uuencode.
* @return string the encoded value
*/
function conf_encodeString($str, $code)
{
switch ($code) {
case 'base64':
return '<b>' . base64_encode($str);
case 'uuencode':
return '<u>' . convert_uuencode($str);
case 'plain':
default:
return $str;
}
}
/**
* return obscured data as plain text
*
* @param string $str encoded data
* @return string plain text
*/
function conf_decodeString($str)
{
switch (substr($str, 0, 3)) {
case '<b>':
return base64_decode(substr($str, 3));
case '<u>':
return convert_uudecode(substr($str, 3));
default: // not encoded (or unknown)
return $str;
}
}
/**
* array combination function to remove negated values (prefixed by !)
*
* @param array $current
* @param array $new
*
* @return array the combined array, numeric keys reset
*/
function array_merge_with_removal($current, $new)
{
foreach ($new as $val) {
if (str_starts_with($val, DOKU_CONF_NEGATION)) {
$idx = array_search(trim(substr($val, 1)), $current);
if ($idx !== false) {
unset($current[$idx]);
}
} else {
$current[] = trim($val);
}
}
return array_slice($current, 0);
}
//Setup VIM: ex: et ts=4 :