mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-11-15 04:24:57 +01:00
828 lines
26 KiB
PHP
828 lines
26 KiB
PHP
<?php
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/**
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* Error code for a missing driver configuration.
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*/
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define('HORDE_ERROR_DRIVER_CONFIG_MISSING', 1);
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/**
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* Error code for an incomplete driver configuration.
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*/
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define('HORDE_ERROR_DRIVER_CONFIG', 2);
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/**
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* The Util:: class provides generally useful methods of different kinds.
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*
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* $Horde: framework/Util/Util.php,v 1.388 2005/01/12 15:51:12 chuck Exp $
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*
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* Copyright 1999-2005 Chuck Hagenbuch <chuck@horde.org>
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* Copyright 1999-2005 Jon Parise <jon@horde.org>
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*
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* See the enclosed file COPYING for license information (LGPL). If you
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* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
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*
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* @author Chuck Hagenbuch <chuck@horde.org>
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* @author Jon Parise <jon@horde.org>
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* @since Horde 3.0
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* @package Horde_Util
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*/
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class Util {
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/**
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* Returns an object's clone.
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*
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* @param object &$obj The object to clone.
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*
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* @return object The cloned object.
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*/
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function &cloneObject(&$obj)
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{
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if (version_compare(zend_version(), '2', '>')) {
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return clone($obj);
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} else {
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$newObj = $obj;
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return $newObj;
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}
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}
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/**
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* Buffers the output from a function call, like readfile() or
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* highlight_string(), that prints the output directly, so that instead it
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* can be returned as a string and used.
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*
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* @access public
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*
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* @param string $function The function to run.
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* @param mixed $arg1 First argument to $function().
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* @param mixed $arg2 Second argument to $function().
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* @param mixed $arg... ...
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* @param mixed $argN Nth argument to $function().
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*
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* @return string The output of the function.
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*/
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function bufferOutput()
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{
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if (func_num_args() == 0) {
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return false;
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}
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$eval = false;
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$args = func_get_args();
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$function = array_shift($args);
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if (is_array($function)) {
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if (!is_callable($function)) {
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return false;
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}
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} elseif (($function == 'include') ||
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($function == 'include_once') ||
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($function == 'require') ||
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($function == 'require_once')) {
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$eval = true;
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} elseif (!function_exists($function) &&
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($function != 'eval')) {
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return false;
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}
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ob_start();
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if ($eval) {
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eval($function . " '" . implode(',', $args) . "';");
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} elseif ($function == 'eval') {
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eval($args[0]);
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} else {
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call_user_func_array($function, $args);
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}
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$output = ob_get_contents();
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ob_end_clean();
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return $output;
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}
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/**
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* Checks to see if a value has been set by the script and not by GET,
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* POST, or cookie input. The value being checked MUST be in the global
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* scope.
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*
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* @access public
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*
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* @param string $varname The variable name to check.
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*
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* @return mixed Null if the var is in user input, the variable value
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* otherwise.
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*/
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function nonInputVar($varname)
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{
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if (isset($_GET[$varname]) ||
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isset($_POST[$varname]) ||
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isset($_COOKIE[$varname])) {
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return null;
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} else {
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return isset($GLOBALS[$varname]) ? $GLOBALS[$varname] : null;
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}
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}
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/**
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* Adds a name=value pair to the end of an URL, taking care of whether
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* there are existing parameters and whether to use ?, & or & as the
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* glue. All data will be urlencoded.
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*
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* @access public
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*
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* @param string $url The URL to modify
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* @param mixed $parameter Either the name=value pair to add
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* (DEPRECATED) -or-
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* the name value -or-
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* an array of name/value pairs.
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* @param string $value If specified, the value part ($parameter is
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* then assumed to just be the parameter name).
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* @param boolean $encode If true, and we don't have argument separators
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* yet, the argument separator gets encoded.
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*
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* @return string The modified URL.
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*
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* @since Horde 2.1
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*/
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function addParameter($url, $parameter, $value = null, $encode = true)
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{
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if (empty($parameter)) {
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return $url;
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}
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if (!is_array($parameter)) {
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/* This is deprecated should be removed in the future. */
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if (is_null($value)) {
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@list($parameter, $value) = explode('=', $parameter, 2);
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}
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$add = array($parameter => $value);
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} else {
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$add = $parameter;
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}
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$arg = $encode ? '&' : '&';
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if (($pos = strpos($url, '?')) === false) {
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$glue = '?';
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} else {
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/* Check if the argument separator has been already
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* htmlentities-ized in the URL. */
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$query = substr($url, $pos + 1);
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if (preg_match('/=.*?&.*?=/', $query)) {
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$arg = '&';
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$query = strtr($query, array_flip(get_html_translation_table(HTML_ENTITIES)));
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} elseif (preg_match('/=.*?&.*?=/', $query)) {
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$arg = '&';
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}
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$pairs = explode($arg, $query);
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$params = array();
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foreach ($pairs as $pair) {
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$pair = explode('=', $pair, 2);
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$params[$pair[0]] = count($pair) == 2 ? $pair[1] : '';
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}
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$glue = $arg;
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}
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$url_params = array();
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foreach ($add as $parameter => $value) {
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if (!isset($params[$parameter])) {
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if (is_array($value)) {
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foreach ($value as $val) {
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$url_params[] = urlencode($parameter) . '[]=' . urlencode($val);
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}
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} else {
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$url_params[] = urlencode($parameter) . '=' . urlencode($value);
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}
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}
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}
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if (count($url_params)) {
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return $url . $glue . implode($arg, $url_params);
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} else {
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return $url;
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}
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}
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/**
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* Removes name=value pairs from a URL.
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*
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* @access public
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*
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* @param string $url The URL to modify.
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* @param mixed $remove Either a single parameter to remove or an array
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* of parameters to remove.
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*
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* @return string The modified URL.
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*
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* @since Horde 2.2
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*/
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function removeParameter($url, $remove)
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{
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if (!is_array($remove)) {
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$remove = array($remove);
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}
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/* Return immediately if there are no parameters to remove. */
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if (($pos = strpos($url, '?')) === false) {
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return $url;
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}
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$entities = false;
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list($url, $query) = explode('?', $url, 2);
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/* Check if the argument separator has been already
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* htmlentities-ized in the URL. */
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if (preg_match('/=.*?&.*?=/', $query)) {
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$entities = true;
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$query = strtr($query, array_flip(get_html_translation_table(HTML_ENTITIES)));
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}
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/* Get the list of parameters. */
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$pairs = explode('&', $query);
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$params = array();
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foreach ($pairs as $pair) {
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$pair = explode('=', $pair, 2);
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$params[$pair[0]] = count($pair) == 2 ? $pair[1] : '';
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}
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/* Remove the parameters. */
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foreach ($remove as $param) {
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unset($params[$param]);
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}
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if (!count($params)) {
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return $url;
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}
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/* Flatten arrays.
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* FIXME: should handle more than one array level somehow. */
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$add = array();
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foreach ($params as $key => $val) {
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if (is_array($val)) {
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foreach ($val as $v) {
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$add[] = $key . '[]=' . $v;
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}
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} else {
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$add[] = $key . '=' . $val;
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}
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}
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$query = implode('&', $add);
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if ($entities) {
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$query = htmlentities($query);
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}
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return $url . '?' . $query;
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}
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/**
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* Returns a url with the 'nocache' parameter added, if the browser is
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* buggy and caches old URLs.
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*
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* @access public
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*
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* @param string $url The URL to modify.
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*
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* @return string The requested URI.
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*/
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function nocacheUrl($url)
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{
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static $rand_num;
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require_once 'Horde/Browser.php';
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$browser = &Browser::singleton();
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/* We may need to set a dummy parameter 'nocache' since some
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* browsers do not always honor the 'no-cache' header. */
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if ($browser->hasQuirk('cache_same_url')) {
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if (!isset($rand_num)) {
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$rand_num = base_convert(microtime(), 10, 36);
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}
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return Util::addParameter($url, 'nocache', $rand_num);
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} else {
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return $url;
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}
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}
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/**
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* Returns a hidden form input containing the session name and id.
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*
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* @access public
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*
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* @param boolean $append_session 0 = only if needed, 1 = always.
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*
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* @return string The hidden form input, if needed/requested.
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*/
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function formInput($append_session = 0)
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{
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if ($append_session == 1 ||
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!isset($_COOKIE[session_name()])) {
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return '<input type="hidden" name="' . htmlspecialchars(session_name()) . '" value="' . htmlspecialchars(session_id()) . "\" />\n";
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} else {
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return '';
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}
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}
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/**
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* Prints a hidden form input containing the session name and id.
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*
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* @access public
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*
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* @param boolean $append_session 0 = only if needed, 1 = always.
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*/
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function pformInput($append_session = 0)
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{
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echo Util::formInput($append_session);
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}
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/**
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* If magic_quotes_gpc is in use, run stripslashes() on $var.
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*
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* @access public
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*
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* @param string &$var The string to un-quote, if necessary.
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*
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* @return string $var, minus any magic quotes.
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*/
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function dispelMagicQuotes(&$var)
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{
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static $magic_quotes;
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if (!isset($magic_quotes)) {
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$magic_quotes = get_magic_quotes_gpc();
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}
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if ($magic_quotes) {
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if (!is_array($var)) {
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$var = stripslashes($var);
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} else {
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array_walk($var, array('Util', 'dispelMagicQuotes'));
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}
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}
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return $var;
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}
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/**
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* Gets a form variable from GET or POST data, stripped of magic quotes if
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* necessary. If the variable is somehow set in both the GET data and the
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* POST data, the value from the POST data will be returned and the GET
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* value will be ignored.
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*
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* @access public
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*
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* @param string $var The name of the form variable to look for.
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* @param string $default The value to return if the variable is not
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* there.
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*
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* @return string The cleaned form variable, or $default.
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*/
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function getFormData($var, $default = null)
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{
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return (($val = Util::getPost($var)) !== null)
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? $val : Util::getGet($var, $default);
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}
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/**
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* Gets a form variable from GET data, stripped of magic quotes if
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* necessary. This function will NOT return a POST variable.
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*
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* @access public
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*
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* @param string $var The name of the form variable to look for.
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* @param string $default The value to return if the variable is not
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* there.
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*
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* @return string The cleaned form variable, or $default.
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*
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* @since Horde 2.2
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*/
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function getGet($var, $default = null)
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{
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return (isset($_GET[$var]))
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? Util::dispelMagicQuotes($_GET[$var])
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: $default;
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}
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/**
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* Gets a form variable from POST data, stripped of magic quotes if
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* necessary. This function will NOT return a GET variable.
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*
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* @access public
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*
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* @param string $var The name of the form variable to look for.
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* @param string $default The value to return if the variable is not
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* there.
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*
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* @return string The cleaned form variable, or $default.
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*
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* @since Horde 2.2
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*/
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function getPost($var, $default = null)
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{
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return (isset($_POST[$var]))
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? Util::dispelMagicQuotes($_POST[$var])
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: $default;
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}
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/**
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* Determines the location of the system temporary directory.
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*
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* @access public
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*
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* @return string A directory name which can be used for temp files.
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* Returns false if one could not be found.
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*/
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function getTempDir()
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{
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/* First, try PHP's upload_tmp_dir directive. */
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$tmp = ini_get('upload_tmp_dir');
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/* Otherwise, try to determine the TMPDIR environment
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* variable. */
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if (empty($tmp)) {
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$tmp = getenv('TMPDIR');
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}
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/* If we still cannot determine a value, then cycle through a
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* list of preset possibilities. */
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$tmp_locations = array('/tmp', '/var/tmp', 'c:\WUTemp', 'c:\temp',
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'c:\windows\temp', 'c:\winnt\temp');
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while (empty($tmp) && count($tmp_locations)) {
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$tmp_check = array_shift($tmp_locations);
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if (@is_dir($tmp_check)) {
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$tmp = $tmp_check;
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}
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}
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|
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/* If it is still empty, we have failed, so return false;
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* otherwise return the directory determined. */
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return empty($tmp) ? false : $tmp;
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}
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|
|
|
/**
|
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* Creates a temporary filename for the lifetime of the script, and
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* (optionally) register it to be deleted at request shutdown.
|
|
*
|
|
* @param string $prefix Prefix to make the temporary name more
|
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* recognizable.
|
|
* @param boolean $delete Delete the file at the end of the request?
|
|
* @param string $dir Directory to create the temporary file in.
|
|
* @param boolean $secure If deleting file, should we securely delete the
|
|
* file?
|
|
*
|
|
* @return string Returns the full path-name to the temporary file.
|
|
* Returns false if a temp file could not be created.
|
|
*/
|
|
function getTempFile($prefix = '', $delete = true, $dir = '', $secure = false)
|
|
{
|
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if (empty($dir) || !is_dir($dir)) {
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$tmp_dir = Util::getTempDir();
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} else {
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$tmp_dir = $dir;
|
|
}
|
|
|
|
if (empty($tmp_dir)) {
|
|
return false;
|
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}
|
|
|
|
$tmp_file = tempnam($tmp_dir, $prefix);
|
|
|
|
/* If the file was created, then register it for deletion and return */
|
|
if (empty($tmp_file)) {
|
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return false;
|
|
} else {
|
|
if ($delete) {
|
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Util::deleteAtShutdown($tmp_file, true, $secure);
|
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}
|
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return $tmp_file;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a temporary directory in the system's temporary directory.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param boolean $delete Delete the temporary directory at the end of
|
|
* the request?
|
|
* @param string $temp_dir Use this temporary directory as the directory
|
|
* where the temporary directory will be created.
|
|
*
|
|
* @return string The pathname to the new temporary directory.
|
|
* Returns false if directory not created.
|
|
*/
|
|
function createTempDir($delete = true, $temp_dir = null)
|
|
{
|
|
if (is_null($temp_dir)) {
|
|
$temp_dir = Util::getTempDir();
|
|
}
|
|
|
|
if (empty($temp_dir)) {
|
|
return false;
|
|
}
|
|
|
|
/* Get the first 8 characters of a random string to use as a temporary
|
|
directory name. */
|
|
do {
|
|
$temp_dir .= '/' . substr(base_convert(mt_rand() . microtime(), 10, 36), 0, 8);
|
|
} while (file_exists($temp_dir));
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|
|
|
$old_umask = umask(0000);
|
|
if (!mkdir($temp_dir, 0700)) {
|
|
$temp_dir = false;
|
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} elseif ($delete) {
|
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Util::deleteAtShutdown($temp_dir);
|
|
}
|
|
umask($old_umask);
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|
|
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return $temp_dir;
|
|
}
|
|
|
|
/**
|
|
* Removes given elements at request shutdown.
|
|
*
|
|
* If called with a filename will delete that file at request shutdown; if
|
|
* called with a directory will remove that directory and all files in that
|
|
* directory at request shutdown.
|
|
*
|
|
* If called with no arguments, return all elements to be deleted (this
|
|
* should only be done by Util::_deleteAtShutdown).
|
|
*
|
|
* The first time it is called, it initializes the array and registers
|
|
* Util::_deleteAtShutdown() as a shutdown function - no need to do so
|
|
* manually.
|
|
*
|
|
* The second parameter allows the unregistering of previously registered
|
|
* elements.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $filename The filename to be deleted at the end of the
|
|
* request.
|
|
* @param boolean $register If true, then register the element for
|
|
* deletion, otherwise, unregister it.
|
|
* @param boolean $secure If deleting file, should we securely delete
|
|
* the file?
|
|
*/
|
|
function deleteAtShutdown($filename = false, $register = true,
|
|
$secure = false)
|
|
{
|
|
static $dirs, $files, $securedel;
|
|
|
|
/* Initialization of variables and shutdown functions. */
|
|
if (is_null($dirs)){
|
|
$dirs = array();
|
|
$files = array();
|
|
$securedel = array();
|
|
register_shutdown_function(array('Util', '_deleteAtShutdown'));
|
|
}
|
|
|
|
if ($filename) {
|
|
if ($register) {
|
|
if (@is_dir($filename)) {
|
|
$dirs[$filename] = true;
|
|
} else {
|
|
$files[$filename] = true;
|
|
}
|
|
if ($secure) {
|
|
$securedel[$filename] = true;
|
|
}
|
|
} else {
|
|
unset($dirs[$filename]);
|
|
unset($files[$filename]);
|
|
unset($securedel[$filename]);
|
|
}
|
|
} else {
|
|
return array($dirs, $files, $securedel);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Deletes registered files at request shutdown.
|
|
*
|
|
* This function should never be called manually; it is registered as a
|
|
* shutdown function by Util::deleteAtShutdown() and called automatically
|
|
* at the end of the request. It will retrieve the list of folders and
|
|
* files to delete from Util::deleteAtShutdown()'s static array, and then
|
|
* iterate through, deleting folders recursively.
|
|
*
|
|
* Contains code from gpg_functions.php.
|
|
* Copyright (c) 2002-2003 Braverock Ventures
|
|
*
|
|
* @access private
|
|
*/
|
|
function _deleteAtShutdown()
|
|
{
|
|
$registered = Util::deleteAtShutdown();
|
|
$dirs = $registered[0];
|
|
$files = $registered[1];
|
|
$secure = $registered[2];
|
|
|
|
foreach ($files as $file => $val) {
|
|
/* Delete files */
|
|
if ($val && @file_exists($file)) {
|
|
/* Should we securely delete the file by overwriting the
|
|
data with a random string? */
|
|
if (isset($secure[$file])) {
|
|
$random_str = '';
|
|
for ($i = 0; $i < filesize($file); $i++) {
|
|
$random_str .= chr(mt_rand(0, 255));
|
|
}
|
|
$fp = fopen($file, 'r+');
|
|
fwrite($fp, $random_str);
|
|
fclose($fp);
|
|
}
|
|
@unlink($file);
|
|
}
|
|
}
|
|
|
|
foreach ($dirs as $dir => $val) {
|
|
/* Delete directories */
|
|
if ($val && @file_exists($dir)) {
|
|
/* Make sure directory is empty. */
|
|
$dir_class = dir($dir);
|
|
while (false !== ($entry = $dir_class->read())) {
|
|
if ($entry != '.' && $entry != '..') {
|
|
@unlink($dir . '/' . $entry);
|
|
}
|
|
}
|
|
$dir_class->close();
|
|
@rmdir($dir);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Outputs javascript code to close the current window.
|
|
*
|
|
* @access public
|
|
*
|
|
* @param string $code Any addtional javascript code to run before
|
|
* closing the window.
|
|
*/
|
|
function closeWindowJS($code = '')
|
|
{
|
|
echo '<script language="JavaScript" type="text/javascript">' . $code .
|
|
'window.close();</script>';
|
|
}
|
|
|
|
/**
|
|
* Caches the result of extension_loaded() calls.
|
|
*
|
|
* @access private
|
|
*
|
|
* @param string $ext The extension name.
|
|
*
|
|
* @return boolean Is the extension loaded?
|
|
*/
|
|
function extensionExists($ext)
|
|
{
|
|
static $cache = array();
|
|
|
|
if (!isset($cache[$ext])) {
|
|
$cache[$ext] = extension_loaded($ext);
|
|
}
|
|
|
|
return $cache[$ext];
|
|
}
|
|
|
|
/**
|
|
* Tries to load a PHP extension, behaving correctly for all operating
|
|
* systems.
|
|
*
|
|
* @param string $ext The extension to load.
|
|
*
|
|
* @return boolean True if the extension is now loaded, false if not.
|
|
* True can mean that the extension was already loaded,
|
|
* OR was loaded dynamically.
|
|
*/
|
|
function loadExtension($ext)
|
|
{
|
|
/* If $ext is already loaded, our work is done. */
|
|
if (Util::extensionExists($ext)) {
|
|
return true;
|
|
}
|
|
|
|
/* See if we can call dl() at all, by the current ini settings. */
|
|
if ((ini_get('enable_dl') != 1) || (ini_get('safe_mode') == 1)) {
|
|
return false;
|
|
}
|
|
|
|
if (substr(PHP_OS, 0, 3) == 'WIN') {
|
|
$suffix = 'dll';
|
|
} else {
|
|
switch (PHP_OS) {
|
|
case 'HP-UX':
|
|
$suffix = 'sl';
|
|
break;
|
|
|
|
case 'AIX':
|
|
$suffix = 'a';
|
|
break;
|
|
|
|
case 'OSX':
|
|
$suffix = 'bundle';
|
|
break;
|
|
|
|
default:
|
|
$suffix = 'so';
|
|
}
|
|
}
|
|
|
|
return @dl($ext . '.' . $suffix) || @dl('php_' . $ext . '.' . $suffix);
|
|
}
|
|
|
|
/**
|
|
* Checks if all necessary parameters for a driver's configuration are set
|
|
* and returns a PEAR_Error if something is missing.
|
|
*
|
|
* @param array $params The configuration array with all parameters.
|
|
* @param array $fields An array with mandatory parameter names for this
|
|
* driver.
|
|
* @param string $name The clear text name of the driver. If not
|
|
* specified, the application name will be used.
|
|
* @param array $info A hash containing detailed information about the
|
|
* driver. Will be passed as the userInfo to the
|
|
* PEAR_Error.
|
|
*/
|
|
function assertDriverConfig($params, $fields, $name, $info = array())
|
|
{
|
|
$info = array_merge($info,
|
|
array('params' => $params,
|
|
'fields' => $fields,
|
|
'name' => $name));
|
|
|
|
if (!is_array($params) || !count($params)) {
|
|
require_once 'PEAR.php';
|
|
return PEAR::throwError(sprintf(_("No configuration information specified for %s."), $name),
|
|
HORDE_ERROR_DRIVER_CONFIG_MISSING,
|
|
$info);
|
|
}
|
|
|
|
foreach ($fields as $field) {
|
|
if (!isset($params[$field])) {
|
|
require_once 'PEAR.php';
|
|
return PEAR::throwError(sprintf(_("Required '%s' not specified in configuration."), $field, $name),
|
|
HORDE_ERROR_DRIVER_CONFIG,
|
|
$info);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a format string to be used by strftime().
|
|
*
|
|
* @param string $format A format string as used by date().
|
|
*
|
|
* @return string A format string as similar as possible to $format.
|
|
*/
|
|
function date2strftime($format)
|
|
{
|
|
$dateSymbols = array('a', 'A', 'd', 'D', 'F', 'g', 'G', 'h', 'H', 'i', 'j', 'l', 'm', 'M', 'n', 'r', 's', 'T', 'w', 'W', 'y', 'Y', 'z', 'm/d/Y', 'M', "\n", 'g:i a', 'G:i', "\t", 'H:i:s', '%');
|
|
$strftimeSymbols = array('%p', '%p', '%d', '%a', '%B', '%I', '%H', '%I', '%H', '%M', '%e', '%A', '%m', '%b', '%m', '%a, %e %b %Y %T %Z', '%S', '%Z', '%w', '%V', '%y', '%Y', '%j', '%D', '%h', '%n', '%r', '%R', '%t', '%T', '%%');
|
|
|
|
$result = '';
|
|
for ($pos = 0; $pos < strlen($format);) {
|
|
for ($symbol = 0; $symbol < count($dateSymbols); $symbol++) {
|
|
if (strpos($format, $dateSymbols[$symbol], $pos) === $pos) {
|
|
$result .= $strftimeSymbols[$symbol];
|
|
$pos += strlen($dateSymbols[$symbol]);
|
|
continue 2;
|
|
}
|
|
}
|
|
$result .= substr($format, $pos, 1);
|
|
$pos++;
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Returns a format string to be used by date().
|
|
*
|
|
* @param string $format A format string as used by strftime().
|
|
*
|
|
* @return string A format string as similar as possible to $format.
|
|
*/
|
|
function strftime2date($format)
|
|
{
|
|
$dateSymbols = array('a', 'A', 'd', 'D', 'F', 'g', 'G', 'h', 'H', 'i', 'j', 'l', 'm', 'M', 'n', 'r', 's', 'T', 'w', 'W', 'y', 'Y', 'z', 'm/d/Y', 'M', "\n", 'g:i a', 'G:i', "\t", 'H:i:s', '%');
|
|
$strftimeSymbols = array('%p', '%p', '%d', '%a', '%B', '%I', '%H', '%I', '%H', '%M', '%e', '%A', '%m', '%b', '%m', '%a, %e %b %Y %T %Z', '%S', '%Z', '%w', '%V', '%y', '%Y', '%j', '%D', '%h', '%n', '%r', '%R', '%t', '%T', '%%');
|
|
|
|
return str_replace($strftimeSymbols, $dateSymbols, $format);
|
|
}
|
|
|
|
}
|
|
|
|
if (!function_exists('_')) {
|
|
function _($string)
|
|
{
|
|
return $string;
|
|
}
|
|
|
|
function bindtextdomain()
|
|
{
|
|
}
|
|
|
|
function textdomain()
|
|
{
|
|
}
|
|
|
|
}
|