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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\request; |
| 15 | |
| 16 | /** |
| 17 | * Replacement for a superglobal (like $_GET or $_POST) which calls |
| 18 | * trigger_error on all operations but isset, overloads the [] operator with SPL. |
| 19 | */ |
| 20 | class deactivated_super_global implements \ArrayAccess, \Countable, \IteratorAggregate |
| 21 | { |
| 22 | /** |
| 23 | * @var string Holds the name of the superglobal this is replacing. |
| 24 | */ |
| 25 | private $name; |
| 26 | |
| 27 | /** |
| 28 | * @var int (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE) Super global constant. |
| 29 | */ |
| 30 | private $super_global; |
| 31 | |
| 32 | /** |
| 33 | * @var request_interface The request class instance holding the actual request data. |
| 34 | */ |
| 35 | private $request; |
| 36 | |
| 37 | /** |
| 38 | * Constructor generates an error message fitting the super global to be used within the other functions. |
| 39 | * |
| 40 | * @param request_interface $request A request class instance holding the real super global data. |
| 41 | * @param string $name Name of the super global this is a replacement for - e.g. '_GET'. |
| 42 | * @param int $super_global The variable's super global constant (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE). |
| 43 | */ |
| 44 | public function __construct(request_interface $request, string $name, int $super_global) |
| 45 | { |
| 46 | $this->request = $request; |
| 47 | $this->name = $name; |
| 48 | $this->super_global = $super_global; |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Calls trigger_error with the file and line number the super global was used in. |
| 53 | */ |
| 54 | private function error() |
| 55 | { |
| 56 | $file = ''; |
| 57 | $line = 0; |
| 58 | |
| 59 | $message = 'Illegal use of $' . $this->name . '. You must use the request class to access input data. Found in %s on line %d. This error message was generated by deactivated_super_global.'; |
| 60 | |
| 61 | $backtrace = debug_backtrace(); |
| 62 | if (isset($backtrace[1])) |
| 63 | { |
| 64 | $file = $backtrace[1]['file']; |
| 65 | $line = $backtrace[1]['line']; |
| 66 | } |
| 67 | trigger_error(sprintf($message, $file, $line), E_USER_ERROR); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Redirects isset to the correct request class call. |
| 72 | * |
| 73 | * @param mixed $offset The key of the super global being accessed. |
| 74 | * |
| 75 | * @return bool Whether the key on the super global exists. |
| 76 | */ |
| 77 | public function offsetExists(mixed $offset): bool |
| 78 | { |
| 79 | return $this->request->is_set($offset, $this->super_global); |
| 80 | } |
| 81 | |
| 82 | /**#@+ |
| 83 | * Part of the \ArrayAccess implementation, will always result in a FATAL error. |
| 84 | */ |
| 85 | #[\ReturnTypeWillChange] public function offsetGet($offset): void |
| 86 | { |
| 87 | $this->error(); |
| 88 | } |
| 89 | |
| 90 | #[\ReturnTypeWillChange] public function offsetSet($offset, $value): void |
| 91 | { |
| 92 | $this->error(); |
| 93 | } |
| 94 | |
| 95 | #[\ReturnTypeWillChange] public function offsetUnset($offset): void |
| 96 | { |
| 97 | $this->error(); |
| 98 | } |
| 99 | /**#@-*/ |
| 100 | |
| 101 | /** |
| 102 | * Part of the \Countable implementation, will always result in a FATAL error |
| 103 | * @return void |
| 104 | */ |
| 105 | #[\ReturnTypeWillChange] public function count(): void |
| 106 | { |
| 107 | $this->error(); |
| 108 | } |
| 109 | |
| 110 | /** |
| 111 | * Part of the Traversable/IteratorAggregate implementation, will always result in a FATAL error |
| 112 | * @return void |
| 113 | */ |
| 114 | #[\ReturnTypeWillChange] public function getIterator(): void |
| 115 | { |
| 116 | $this->error(); |
| 117 | } |
| 118 | } |