This file is indexed.

/usr/share/php/Cache/Lite/Function.php is in php-cache-lite 1.7.16-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
<?php

/**
* This class extends Cache_Lite and can be used to cache the result and output of functions/methods
*
* This class is completly inspired from Sebastian Bergmann's
* PEAR/Cache_Function class. This is only an adaptation to
* Cache_Lite
*
* There are some examples in the 'docs/examples' file
* Technical choices are described in the 'docs/technical' file
*
* @package Cache_Lite
* @author Sebastian BERGMANN <sb@sebastian-bergmann.de>
* @author Fabien MARTY <fab@php.net>
*/

require_once('Cache/Lite.php');

class Cache_Lite_Function extends Cache_Lite
{

    // --- Private properties ---

    /**
     * Default cache group for function caching
     *
     * @var string $_defaultGroup
     */
    var $_defaultGroup = 'Cache_Lite_Function';

    /**
     * Don't cache the method call when its output contains the string "NOCACHE"
     *
     * if set to true, the output of the method will never be displayed (because the output is used
     * to control the cache)
     *
     * @var boolean $_dontCacheWhenTheOutputContainsNOCACHE
     */
    var $_dontCacheWhenTheOutputContainsNOCACHE = false;

    /**
     * Don't cache the method call when its result is false
     *
     * @var boolean $_dontCacheWhenTheResultIsFalse
     */
    var $_dontCacheWhenTheResultIsFalse = false;

    /**
     * Don't cache the method call when its result is null
     *
     * @var boolean $_dontCacheWhenTheResultIsNull
     */
    var $_dontCacheWhenTheResultIsNull = false;

    /**
     * Debug the Cache_Lite_Function caching process
     *
     * @var boolean $_debugCacheLiteFunction
     */
    var $_debugCacheLiteFunction = false;

    // --- Public methods ----

    /**
    * Constructor
    *
    * $options is an assoc. To have a look at availables options,
    * see the constructor of the Cache_Lite class in 'Cache_Lite.php'
    *
    * Comparing to Cache_Lite constructor, there is another option :
    * $options = array(
    *     (...) see Cache_Lite constructor
    *     'debugCacheLiteFunction' => (bool) debug the caching process,
    *     'defaultGroup' => default cache group for function caching (string),
    *     'dontCacheWhenTheOutputContainsNOCACHE' => (bool) don't cache when the function output contains "NOCACHE",
    *     'dontCacheWhenTheResultIsFalse' => (bool) don't cache when the function result is false,
    *     'dontCacheWhenTheResultIsNull' => (bool don't cache when the function result is null
    * );
    *
    * @param array $options options
    * @access public
    */
    function __construct($options = array(NULL))
    {
        $availableOptions = array('debugCacheLiteFunction', 'defaultGroup', 'dontCacheWhenTheOutputContainsNOCACHE', 'dontCacheWhenTheResultIsFalse', 'dontCacheWhenTheResultIsNull');
        while (list($name, $value) = each($options)) {
            if (in_array($name, $availableOptions)) {
                $property = '_'.$name;
                $this->$property = $value;
            }
        }
        reset($options);
        parent::__construct($options);
    }

    /**
    * Calls a cacheable function or method (or not if there is already a cache for it)
    *
    * Arguments of this method are read with func_get_args. So it doesn't appear
    * in the function definition. Synopsis :
    * call('functionName', $arg1, $arg2, ...)
    * (arg1, arg2... are arguments of 'functionName')
    *
    * @return mixed result of the function/method
    * @access public
    */
    function call()
    {
        $arguments = func_get_args();
        $id = $this->_makeId($arguments);
        $data = $this->get($id, $this->_defaultGroup);
        if ($data !== false) {
            if ($this->_debugCacheLiteFunction) {
                echo "Cache hit !\n";
            }
            $array = unserialize($data);
            $output = $array['output'];
            $result = $array['result'];
        } else {
            if ($this->_debugCacheLiteFunction) {
                echo "Cache missed !\n";
            }
            ob_start();
            ob_implicit_flush(false);
            $target = array_shift($arguments);
            if (is_array($target)) {
                // in this case, $target is for example array($obj, 'method')
                $object = $target[0];
                $method = $target[1];
                $result = call_user_func_array(array(&$object, $method), $arguments);
            } else {
                if (strstr($target, '::')) { // classname::staticMethod
                    list($class, $method) = explode('::', $target);
                    $result = call_user_func_array(array($class, $method), $arguments);
                } else if (strstr($target, '->')) { // object->method
                    // use a stupid name ($objet_123456789 because) of problems where the object
                    // name is the same as this var name
                    list($object_123456789, $method) = explode('->', $target);
                    global $$object_123456789;
                    $result = call_user_func_array(array($$object_123456789, $method), $arguments);
                } else { // function
                    $result = call_user_func_array($target, $arguments);
                }
            }
            $output = ob_get_contents();
            ob_end_clean();
            if ($this->_dontCacheWhenTheResultIsFalse) {
                if ((is_bool($result)) && (!($result))) {
                    echo($output);
                    return $result;
                }
            }
            if ($this->_dontCacheWhenTheResultIsNull) {
                if (is_null($result)) {
                    echo($output);
                    return $result;
                }
            }
            if ($this->_dontCacheWhenTheOutputContainsNOCACHE) {
                if (strpos($output, 'NOCACHE') > -1) {
                    return $result;
                }
            }
            $array['output'] = $output;
            $array['result'] = $result;
            $this->save(serialize($array), $id, $this->_defaultGroup);
        }
        echo($output);
        return $result;
    }

    /**
    * Drop a cache file
    *
    * Arguments of this method are read with func_get_args. So it doesn't appear
    * in the function definition. Synopsis :
    * remove('functionName', $arg1, $arg2, ...)
    * (arg1, arg2... are arguments of 'functionName')
    *
    * @return boolean true if no problem
    * @access public
    */
    function drop()
    {
        $id = $this->_makeId(func_get_args());
        return $this->remove($id, $this->_defaultGroup);
    }

    /**
    * Make an id for the cache
    *
    * @var array result of func_get_args for the call() or the remove() method
    * @return string id
    * @access private
    */
    function _makeId($arguments)
    {
        $id = serialize($arguments); // Generate a cache id
        if (!$this->_fileNameProtection) {
            $id = md5($id);
            // if fileNameProtection is set to false, then the id has to be hashed
            // because it's a very bad file name in most cases
        }
        return $id;
    }

}