Token.php
126 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * ====================================================================== |
| 5 | * LICENSE: This file is subject to the terms and conditions defined in * |
| 6 | * file 'license.txt', which is part of this source code package. * |
| 7 | * ====================================================================== |
| 8 | */ |
| 9 | |
| 10 | /** |
| 11 | * AAM core policy token evaluator |
| 12 | * |
| 13 | * @package AAM |
| 14 | * @author Vasyl Martyniuk <vasyl@vasyltech.com> |
| 15 | * @since AAM v5.8.2 |
| 16 | */ |
| 17 | final class AAM_Core_Policy_Token { |
| 18 | |
| 19 | /** |
| 20 | * Literal map token's type to the executable method that returns actual value |
| 21 | * |
| 22 | * @var array |
| 23 | * |
| 24 | * @access protected |
| 25 | * @static |
| 26 | */ |
| 27 | protected static $map = array( |
| 28 | 'USER' => 'AAM_Core_Policy_Token::getUserValue', |
| 29 | 'DATETIME' => 'AAM_Core_Policy_Token::getDateTimeValue', |
| 30 | 'GET' => 'AAM_Core_Request::get', |
| 31 | 'POST' => 'AAM_Core_Request::post', |
| 32 | 'COOKIE' => 'AAM_Core_Request::cookie' |
| 33 | ); |
| 34 | |
| 35 | /** |
| 36 | * Evaluate collection of tokens and replace them with values |
| 37 | * |
| 38 | * @param string $part String with tokens |
| 39 | * @param array $tokens Extracted token |
| 40 | * |
| 41 | * @return string |
| 42 | * |
| 43 | * @access public |
| 44 | * @static |
| 45 | */ |
| 46 | public static function evaluate($part, array $tokens) { |
| 47 | foreach($tokens as $token) { |
| 48 | $part = str_replace( |
| 49 | $token, |
| 50 | self::getValue(preg_replace('/^\$\{([^}]+)\}$/', '${1}', $token)), |
| 51 | $part |
| 52 | ); |
| 53 | } |
| 54 | |
| 55 | return $part; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Get token value |
| 60 | * |
| 61 | * @param string $token |
| 62 | * @param mixed $value |
| 63 | * |
| 64 | * @return mixed |
| 65 | * |
| 66 | * @access protected |
| 67 | * @static |
| 68 | */ |
| 69 | protected static function getValue($token, $value = null) { |
| 70 | $parts = explode('.', $token); |
| 71 | |
| 72 | if (isset(self::$map[$parts[0]])) { |
| 73 | $value = call_user_func(self::$map[$parts[0]], $parts[1], $value); |
| 74 | } elseif ($parts[0] === 'CALLBACK' && is_callable($parts[1])) { |
| 75 | $value = call_user_func($parts[1], $value); |
| 76 | } |
| 77 | |
| 78 | return $value; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Get USER's value |
| 83 | * |
| 84 | * @param string $prop |
| 85 | * |
| 86 | * @return mixed |
| 87 | * |
| 88 | * @access protected |
| 89 | * @static |
| 90 | */ |
| 91 | protected static function getUserValue($prop) { |
| 92 | $user = AAM::api()->getUser(); |
| 93 | |
| 94 | switch(strtolower($prop)) { |
| 95 | case 'ip': |
| 96 | case 'ipaddress': |
| 97 | $value = AAM_Core_Request::server('REMOTE_ADDR'); |
| 98 | break; |
| 99 | |
| 100 | case 'authenticated': |
| 101 | $value = $user->isVisitor() ? false : true; |
| 102 | break; |
| 103 | |
| 104 | default: |
| 105 | $value = $user->{$prop}; |
| 106 | break; |
| 107 | } |
| 108 | |
| 109 | return $value; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Get current datetime value |
| 114 | * |
| 115 | * @param string $prop |
| 116 | * |
| 117 | * @return string |
| 118 | * |
| 119 | * @access protected |
| 120 | * @static |
| 121 | */ |
| 122 | protected static function getDateTimeValue($prop) { |
| 123 | return date($prop); |
| 124 | } |
| 125 | |
| 126 | } |