56 lines
1.2 KiB
PHP
56 lines
1.2 KiB
PHP
<?php
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namespace Post;
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class Form {
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public $fields;
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public $action;
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public function __construct($fields) {
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$this->fields=$fields;
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}
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public function denyCsrf() {
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$this->fields["_csrf"]=new HiddenFormField();
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$this->fields["_csrf"]->setValue($this->getCsrfToken());
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}
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public function getEnctype() {
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foreach ($this->fields as $name=>$field) {
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if ($field instanceof FileUpload) {
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return "multipart/form-data";
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}
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}
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return "application/x-www-form-urlencoded";
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}
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public function reset() {
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foreach ($this->fields as $name=>$field) {
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$field->reset();
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}
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}
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public function preseedFromUrl() {
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foreach ($this->fields as $name=>$field) {
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if (isset($_GET[$name])) {
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$field->setValue($_GET[$name]);
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}
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}
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}
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public function loadFromEnv() {
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foreach ($this->fields as $name=>$field) {
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$field->loadFromEnv($name);
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}
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if (isset($this->fields['_csrf']) && $this->fields['_csrf']->getValue() !== $this->getCsrfToken()) {
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throw new CsrfException();
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}
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}
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public static function getCsrfToken() {
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if (!isset($_SESSION['csrf'])) {
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$_SESSION['csrf']=bin2hex(openssl_random_pseudo_bytes(16));
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}
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return $_SESSION['csrf'];
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}
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}
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