Révision 211d6cee
Ajouté par Assos Assos il y a environ 6 ans
| drupal7/sites/all/modules/hidden_captcha/hidden_captcha.module | ||
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/** |
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* @file |
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* All code for the Foo Bar module, except installation-related code.
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* All code for the Hidden CAPTCHA module, except installation-related code.
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*/ |
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/** |
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'page arguments' => array('hidden_captcha_settings_form'),
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'access arguments' => array('administer CAPTCHA settings'),
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'type' => MENU_LOCAL_TASK, |
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'weight' => -10 |
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'weight' => -10,
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); |
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return $items; |
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} |
| ... | ... | |
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$form['hidden_captcha_label'] = array( |
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'#type' => 'textfield', |
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'#title' => t('Hidden text field label'),
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'#description' => t( |
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"This is the hidden captcha form field's label, describing the expected input.<br />" . |
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"<strong>It is highly recommended to change it!</strong><br />" . |
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"The label should be as \"machine-readable\" as possible, encouraging spambots to fill in the field. An example might be a simple math challenge.<br />" . |
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"The label will only be visible to people who do not have CSS enabled and to robots." |
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), |
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'#description' => t("This is the hidden captcha form field's label, describing the expected input.<br /><strong>It is highly recommended to change it!</strong><br />The label should be as \"machine-readable\" as possible, encouraging spambots to fill in the field. An example might be a simple math challenge.<br />The label will only be visible to people who do not have CSS enabled and to robots."),
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'#default_value' => variable_get('hidden_captcha_label', 'Website URL'),
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); |
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return system_settings_form($form); |
| ... | ... | |
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*/ |
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function hidden_captcha_captcha($op, $captcha_type = '') {
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switch ($op) {
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case 'list': return array('Hidden CAPTCHA');
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case 'list': |
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return array('Hidden CAPTCHA');
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case 'generate': |
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if ($captcha_type == 'Hidden CAPTCHA') {
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$captcha = array(); |
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$captcha['solution'] = ''; |
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// Ensure this captcha is cacheable. |
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// @see https://www.drupal.org/project/captcha/issues/2449209 |
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$captcha['cacheable'] = TRUE; |
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// The CAPTCHA solution provided by hook_captcha() is updated in the |
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// 'captcha_session' table on pre-render phase of element process. |
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// @see captcha_pre_render_process() |
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// @see _captcha_update_captcha_session() |
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// However, if the cache is enabled, solution would be empty for the |
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// first attempt of the cached form. For the next attempt, there will |
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// not be any 'sid' in form_state |
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// (i.e. $form_state['captcha_info']['captcha_sid'] = null). |
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// So a new solution would get generated at captcha_element_process(). |
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// The default 'captcha_validate' function, |
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// captcha_validate_strict_equality(), would fail in this case. |
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// @see captcha_validate() |
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// Adding custom validation function to check solution is always empty. |
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$captcha['captcha_validate'] = 'hidden_captcha_captcha_validate'; |
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$captcha['form']['captcha_response'] = array( |
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'#type' => 'textfield', |
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'#title' => variable_get('hidden_captcha_label', 'Website URL'),
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| ... | ... | |
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} |
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} |
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/** |
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* CAPTCHA validation callback; checks that the response is empty. |
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*/ |
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function hidden_captcha_captcha_validate($solution, $captcha_response, $element, $form_state) {
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return $captcha_response === ''; |
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} |
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/** |
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* Implements hook_theme(). |
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*/ |
| ... | ... | |
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return array( |
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'captcha' => array( |
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'arguments' => array('element' => NULL),
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'function' => 'theme_hidden_captcha_captcha' |
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) |
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'function' => 'theme_hidden_captcha_captcha',
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),
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); |
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} |
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|
| ... | ... | |
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function theme_hidden_captcha_captcha($element) {
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$captcha = theme_captcha($element); |
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if (strncmp($element["element"]["#captcha_type"], "hidden_captcha/", 15) == 0) {
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//generate a random class name
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// Generate a random class name.
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$chars = "abcdfghjkmnpqrstvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
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$class = ""; |
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for ($i = 0; $i < 64; ++$i) $class .= substr($chars, rand(0, strlen($chars)-1), 1); |
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//hide the random class via css |
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drupal_add_css(".$class{width:0;height:0;overflow:hidden;}", "inline"); // TODO: move the random class to an external file
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//html for the captcha |
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for ($i = 0; $i < 64; ++$i) {
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$class .= substr($chars, rand(0, strlen($chars) - 1), 1); |
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} |
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// Hide the random class via CSS. |
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// @todo Move the random class to an external file. |
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drupal_add_css(".$class{width:0;height:0;overflow:hidden;}", "inline");
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// HTML for the captcha. |
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$captcha = "<div class=\"$class\">" . $captcha . "</div>"; |
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} |
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return $captcha; |
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