source: trunk/include/functions_cookie.inc.php @ 22491

Last change on this file since 22491 was 19703, checked in by plg, 12 years ago

update Piwigo headers to 2013 (the end of the world didn't occur as expected on r12922)

  • Property svn:eol-style set to LF
File size: 4.0 KB
Line 
1<?php
2// +-----------------------------------------------------------------------+
3// | Piwigo - a PHP based photo gallery                                    |
4// +-----------------------------------------------------------------------+
5// | Copyright(C) 2008-2013 Piwigo Team                  http://piwigo.org |
6// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
7// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
8// +-----------------------------------------------------------------------+
9// | This program is free software; you can redistribute it and/or modify  |
10// | it under the terms of the GNU General Public License as published by  |
11// | the Free Software Foundation                                          |
12// |                                                                       |
13// | This program is distributed in the hope that it will be useful, but   |
14// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
15// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
16// | General Public License for more details.                              |
17// |                                                                       |
18// | You should have received a copy of the GNU General Public License     |
19// | along with this program; if not, write to the Free Software           |
20// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
21// | USA.                                                                  |
22// +-----------------------------------------------------------------------+
23
24// cookie_path returns the path to use for the Piwigo cookie.
25// If Piwigo is installed on :
26// http://domain.org/meeting/gallery/category.php
27// cookie_path will return : "/meeting/gallery"
28function cookie_path()
29{
30  if ( isset($_SERVER['REDIRECT_SCRIPT_NAME']) and
31       !empty($_SERVER['REDIRECT_SCRIPT_NAME']) )
32  {
33    $scr = $_SERVER['REDIRECT_SCRIPT_NAME'];
34  }
35  else if ( isset($_SERVER['REDIRECT_URL']) )
36  {
37    // mod_rewrite is activated for upper level directories. we must set the
38    // cookie to the path shown in the browser otherwise it will be discarded.
39    if
40      (
41        isset($_SERVER['PATH_INFO']) and !empty($_SERVER['PATH_INFO']) and
42        ($_SERVER['REDIRECT_URL'] !== $_SERVER['PATH_INFO']) and
43        (substr($_SERVER['REDIRECT_URL'],-strlen($_SERVER['PATH_INFO']))
44            == $_SERVER['PATH_INFO'])
45      )
46    {
47      $scr = substr($_SERVER['REDIRECT_URL'], 0,
48        strlen($_SERVER['REDIRECT_URL'])-strlen($_SERVER['PATH_INFO']));
49    }
50    else
51    {
52      $scr = $_SERVER['REDIRECT_URL'];
53    }
54  }
55  else
56  {
57    $scr = $_SERVER['SCRIPT_NAME'];
58  }
59
60  $scr = substr($scr,0,strrpos( $scr,'/'));
61
62  // add a trailing '/' if needed
63  if ((strlen($scr) == 0) or ($scr{strlen($scr)-1} !== '/'))
64  {
65    $scr .= '/';
66  }
67
68  if ( substr(PHPWG_ROOT_PATH,0,3)=='../')
69  { // this is maybe a plugin inside pwg directory
70    // TODO - what if it is an external script outside PWG ?
71    $scr = $scr.PHPWG_ROOT_PATH;
72    while (1)
73    {
74      $new = preg_replace('#[^/]+/\.\.(/|$)#', '', $scr);
75      if ($new==$scr)
76      {
77        break;
78      }
79      $scr=$new;
80    }
81  }
82  return $scr;
83}
84
85/**
86 * persistently stores a variable in pwg cookie
87 * @return boolean true on success
88 * @see pwg_get_cookie_var
89 */
90function pwg_set_cookie_var($var, $value, $expire=null)
91{
92  if ($value==null or $expire===0)
93  {
94    unset($_COOKIE['pwg_'.$var]);
95    return setcookie('pwg_'.$var, false, 0, cookie_path());
96
97  }
98  else
99  {
100    $_COOKIE['pwg_'.$var] = $value;
101    $expire = is_numeric($expire) ? $expire : strtotime('+10 years');
102    return setcookie('pwg_'.$var, $value, $expire, cookie_path());
103  }
104}
105
106/**
107 * retrieves the value of a persistent variable in pwg cookie
108 * @return mixed
109 * @see pwg_set_cookie_var
110 */
111function pwg_get_cookie_var($var, $default = null)
112{
113  if (isset($_COOKIE['pwg_'.$var]))
114  {
115    return $_COOKIE['pwg_'.$var];
116  }
117  else
118  {
119    return $default;
120  }
121}
122
123?>
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