1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | Piwigo - a PHP based picture gallery | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | Copyright(C) 2008-2010 Piwigo Team http://piwigo.org | |
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6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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8 | // +-----------------------------------------------------------------------+ |
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9 | // | This program is free software; you can redistribute it and/or modify | |
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10 | // | it under the terms of the GNU General Public License as published by | |
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11 | // | the Free Software Foundation | |
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12 | // | | |
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13 | // | This program is distributed in the hope that it will be useful, but | |
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14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 | // | General Public License for more details. | |
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17 | // | | |
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18 | // | You should have received a copy of the GNU General Public License | |
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19 | // | along with this program; if not, write to the Free Software | |
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20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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21 | // | USA. | |
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22 | // +-----------------------------------------------------------------------+ |
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23 | |
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24 | // cookie_path returns the path to use for the Piwigo cookie. |
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25 | // If Piwigo is installed on : |
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26 | // http://domain.org/meeting/gallery/category.php |
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27 | // cookie_path will return : "/meeting/gallery" |
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28 | function cookie_path() |
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29 | { |
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30 | if ( isset($_SERVER['REDIRECT_SCRIPT_NAME']) and |
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31 | !empty($_SERVER['REDIRECT_SCRIPT_NAME']) ) |
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32 | { |
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33 | $scr = $_SERVER['REDIRECT_SCRIPT_NAME']; |
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34 | } |
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35 | else if ( isset($_SERVER['REDIRECT_URL']) ) |
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36 | { |
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37 | // mod_rewrite is activated for upper level directories. we must set the |
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38 | // cookie to the path shown in the browser otherwise it will be discarded. |
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39 | if |
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40 | ( |
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41 | isset($_SERVER['PATH_INFO']) and !empty($_SERVER['PATH_INFO']) and |
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42 | ($_SERVER['REDIRECT_URL'] !== $_SERVER['PATH_INFO']) and |
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43 | (substr($_SERVER['REDIRECT_URL'],-strlen($_SERVER['PATH_INFO'])) |
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44 | == $_SERVER['PATH_INFO']) |
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45 | ) |
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46 | { |
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47 | $scr = substr($_SERVER['REDIRECT_URL'], 0, |
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48 | strlen($_SERVER['REDIRECT_URL'])-strlen($_SERVER['PATH_INFO'])); |
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49 | } |
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50 | else |
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51 | { |
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52 | $scr = $_SERVER['REDIRECT_URL']; |
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53 | } |
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54 | } |
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55 | else |
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56 | { |
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57 | $scr = $_SERVER['SCRIPT_NAME']; |
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58 | } |
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59 | |
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60 | $scr = substr($scr,0,strrpos( $scr,'/')); |
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61 | |
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62 | // add a trailing '/' if needed |
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63 | if ((strlen($scr) == 0) or ($scr{strlen($scr)-1} !== '/')) |
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64 | { |
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65 | $scr .= '/'; |
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66 | } |
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67 | |
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68 | if ( substr(PHPWG_ROOT_PATH,0,3)=='../') |
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69 | { // this is maybe a plugin inside pwg directory |
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70 | // TODO - what if it is an external script outside PWG ? |
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71 | $scr = $scr.PHPWG_ROOT_PATH; |
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72 | while (1) |
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73 | { |
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74 | $new = preg_replace('#[^/]+/\.\.(/|$)#', '', $scr); |
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75 | if ($new==$scr) |
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76 | { |
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77 | break; |
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78 | } |
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79 | $scr=$new; |
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80 | } |
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81 | } |
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82 | return $scr; |
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83 | } |
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84 | |
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85 | /** |
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86 | * persistently stores a variable in pwg cookie |
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87 | * @return boolean true on success |
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88 | * @see pwg_get_cookie_var |
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89 | */ |
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90 | function pwg_set_cookie_var($var, $value, $expire=null) |
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91 | { |
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92 | if ($value==null or $expire===0) |
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93 | { |
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94 | unset($_COOKIE['pwg_'.$var]); |
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95 | return setcookie('pwg_'.$var, false, 0, cookie_path()); |
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96 | |
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97 | } |
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98 | else |
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99 | { |
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100 | $_COOKIE['pwg_'.$var] = $value; |
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101 | $expire = is_numeric($expire) ? $expire : strtotime('+10 years'); |
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102 | return setcookie('pwg_'.$var, $value, $expire, cookie_path()); |
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103 | } |
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104 | } |
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105 | |
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106 | /** |
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107 | * retrieves the value of a persistent variable in pwg cookie |
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108 | * @return mixed |
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109 | * @see pwg_set_cookie_var |
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110 | */ |
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111 | function pwg_get_cookie_var($var, $default = null) |
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112 | { |
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113 | if (isset($_COOKIE['pwg_'.$var])) |
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114 | { |
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115 | return $_COOKIE['pwg_'.$var]; |
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116 | } |
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117 | else |
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118 | { |
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119 | return $default; |
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120 | } |
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121 | } |
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122 | |
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123 | ?> |
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