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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 | * An interface through which all application input can be accessed. |
| 18 | */ |
| 19 | interface request_interface |
| 20 | { |
| 21 | /**#@+ |
| 22 | * Constant identifying the super global with the same name. |
| 23 | */ |
| 24 | const POST = 0; |
| 25 | const GET = 1; |
| 26 | const REQUEST = 2; |
| 27 | const COOKIE = 3; |
| 28 | const SERVER = 4; |
| 29 | const FILES = 5; |
| 30 | /**#@-*/ |
| 31 | |
| 32 | /** |
| 33 | * This function allows overwriting or setting a value in one of the super global arrays. |
| 34 | * |
| 35 | * Changes which are performed on the super globals directly will not have any effect on the results of |
| 36 | * other methods this class provides. Using this function should be avoided if possible! It will |
| 37 | * consume twice the the amount of memory of the value |
| 38 | * |
| 39 | * @param string $var_name The name of the variable that shall be overwritten |
| 40 | * @param mixed $value The value which the variable shall contain. |
| 41 | * If this is null the variable will be unset. |
| 42 | * @param int $super_global (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE) |
| 43 | * Specifies which super global shall be changed |
| 44 | */ |
| 45 | public function overwrite($var_name, $value, $super_global = request_interface::REQUEST); |
| 46 | |
| 47 | /** |
| 48 | * Central type safe input handling function. |
| 49 | * All variables in GET or POST requests should be retrieved through this function to maximise security. |
| 50 | * |
| 51 | * @param string|array $var_name The form variable's name from which data shall be retrieved. |
| 52 | * If the value is an array this may be an array of indizes which will give |
| 53 | * direct access to a value at any depth. E.g. if the value of "var" is array(1 => "a") |
| 54 | * then specifying array("var", 1) as the name will return "a". |
| 55 | * @param mixed $default A default value that is returned if the variable was not set. |
| 56 | * This function will always return a value of the same type as the default. |
| 57 | * @param bool $multibyte If $default is a string this parameter has to be true if the variable may contain any UTF-8 characters |
| 58 | * Default is false, causing all bytes outside the ASCII range (0-127) to be replaced with question marks |
| 59 | * @param int $super_global (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE) |
| 60 | * Specifies which super global shall be changed |
| 61 | * |
| 62 | * @return mixed The value of $_REQUEST[$var_name] run through {@link type_cast_helper_interface::set_var} to ensure that the type is the |
| 63 | * the same as that of $default. If the variable is not set $default is returned. |
| 64 | */ |
| 65 | public function variable($var_name, $default, $multibyte = false, $super_global = request_interface::REQUEST); |
| 66 | |
| 67 | /** |
| 68 | * Get a variable without trimming strings and without escaping. |
| 69 | * This method MUST NOT be used with queries. |
| 70 | * Same functionality as variable(), except does not run trim() on strings |
| 71 | * and does not escape input. |
| 72 | * This method should only be used when the raw input is needed without |
| 73 | * any escaping, i.e. for database password during the installation. |
| 74 | * |
| 75 | * @param string|array $var_name The form variable's name from which data shall be retrieved. |
| 76 | * If the value is an array this may be an array of indizes which will give |
| 77 | * direct access to a value at any depth. E.g. if the value of "var" is array(1 => "a") |
| 78 | * then specifying array("var", 1) as the name will return "a". |
| 79 | * @param mixed $default A default value that is returned if the variable was not set. |
| 80 | * This function will always return a value of the same type as the default. |
| 81 | * @param int $super_global (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE) |
| 82 | * Specifies which super global shall be changed |
| 83 | * |
| 84 | * @return mixed The value of $_REQUEST[$var_name] run through {@link type_cast_helper_interface::set_var} to ensure that the type is the |
| 85 | * the same as that of $default. If the variable is not set $default is returned. |
| 86 | */ |
| 87 | public function raw_variable($var_name, $default, $super_global = request_interface::REQUEST); |
| 88 | |
| 89 | /** |
| 90 | * Shortcut method to retrieve SERVER variables. |
| 91 | * |
| 92 | * @param string|array $var_name See \phpbb\request\request_interface::variable |
| 93 | * @param mixed $default See \phpbb\request\request_interface::variable |
| 94 | * |
| 95 | * @return mixed The server variable value. |
| 96 | */ |
| 97 | public function server($var_name, $default = ''); |
| 98 | |
| 99 | /** |
| 100 | * Shortcut method to retrieve the value of client HTTP headers. |
| 101 | * |
| 102 | * @param string|array $header_name The name of the header to retrieve. |
| 103 | * @param mixed $default See \phpbb\request\request_interface::variable |
| 104 | * |
| 105 | * @return mixed The header value. |
| 106 | */ |
| 107 | public function header($header_name, $default = ''); |
| 108 | |
| 109 | /** |
| 110 | * Checks whether a certain variable was sent via POST. |
| 111 | * To make sure that a request was sent using POST you should call this function |
| 112 | * on at least one variable. |
| 113 | * |
| 114 | * @param string $name The name of the form variable which should have a |
| 115 | * _p suffix to indicate the check in the code that creates the form too. |
| 116 | * |
| 117 | * @return bool True if the variable was set in a POST request, false otherwise. |
| 118 | */ |
| 119 | public function is_set_post($name); |
| 120 | |
| 121 | /** |
| 122 | * Checks whether a certain variable is set in one of the super global |
| 123 | * arrays. |
| 124 | * |
| 125 | * @param string $var Name of the variable |
| 126 | * @param int $super_global (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE) |
| 127 | * Specifies which super global shall be changed |
| 128 | * |
| 129 | * @return bool True if the variable was sent as input |
| 130 | */ |
| 131 | public function is_set($var, $super_global = request_interface::REQUEST); |
| 132 | |
| 133 | /** |
| 134 | * Checks whether the current request is an AJAX request (XMLHttpRequest) |
| 135 | * |
| 136 | * @return bool True if the current request is an ajax request |
| 137 | */ |
| 138 | public function is_ajax(); |
| 139 | |
| 140 | /** |
| 141 | * Checks if the current request is happening over HTTPS. |
| 142 | * |
| 143 | * @return bool True if the request is secure. |
| 144 | */ |
| 145 | public function is_secure(); |
| 146 | |
| 147 | /** |
| 148 | * Returns all variable names for a given super global |
| 149 | * |
| 150 | * @param int $super_global (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE) |
| 151 | * The super global from which names shall be taken |
| 152 | * |
| 153 | * @return array All variable names that are set for the super global. |
| 154 | * Pay attention when using these, they are unsanitised! |
| 155 | */ |
| 156 | public function variable_names($super_global = request_interface::REQUEST); |
| 157 | |
| 158 | /** |
| 159 | * Returns the original array of the requested super global |
| 160 | * |
| 161 | * @param int $super_global (\phpbb\request\request_interface::POST|GET|REQUEST|COOKIE) |
| 162 | * The super global which will be returned |
| 163 | * |
| 164 | * @return array The original array of the requested super global. |
| 165 | */ |
| 166 | public function get_super_global($super_global = request_interface::REQUEST); |
| 167 | |
| 168 | /** |
| 169 | * Escape a string variable. |
| 170 | * |
| 171 | * @param mixed $value The contents to fill with |
| 172 | * @param bool $multibyte Indicates whether string values may contain UTF-8 characters. |
| 173 | * Default is false, causing all bytes outside the ASCII range (0-127) to be replaced with question marks. |
| 174 | * @return string|array |
| 175 | */ |
| 176 | public function escape($value, $multibyte); |
| 177 | } |