function comment_validate

Validate comment data.

Parameters

$edit: An associative array containig the comment data.

Return value

The original $edit.

File

modules/comment/comment.module, line 1183

Enables users to comment on published content.

Code

function comment_validate($edit) {
  global $user;

  // Invoke other validation handlers
  comment_invoke_comment($edit, 'validate');
  if (isset($edit['date'])) {

    // As of PHP 5.1.0, strtotime returns FALSE upon failure instead of -1.
    if (strtotime($edit['date']) <= 0) {
      form_set_error('date', t('You have to specify a valid date.'));
    }
  }
  if (isset($edit['author']) && !($account = user_load(array(
    'name' => $edit['author'],
  )))) {
    form_set_error('author', t('You have to specify a valid author.'));
  }

  // Check validity of name, mail and homepage (if given)
  if (!$user->uid || isset($edit['is_anonymous'])) {
    $node = node_load($edit['nid']);
    if (variable_get('comment_anonymous_' . $node->type, COMMENT_ANONYMOUS_MAYNOT_CONTACT) > COMMENT_ANONYMOUS_MAYNOT_CONTACT) {
      if ($edit['name']) {
        $taken = db_result(db_query("SELECT COUNT(uid) FROM {users} WHERE LOWER(name) = '%s'", $edit['name']));
        if ($taken != 0) {
          form_set_error('name', t('The name you used belongs to a registered user.'));
        }
      }
      else {
        if (variable_get('comment_anonymous_' . $node->type, COMMENT_ANONYMOUS_MAYNOT_CONTACT) == COMMENT_ANONYMOUS_MUST_CONTACT) {
          form_set_error('name', t('You have to leave your name.'));
        }
      }
      if ($edit['mail']) {
        if (!valid_email_address($edit['mail'])) {
          form_set_error('mail', t('The e-mail address you specified is not valid.'));
        }
      }
      else {
        if (variable_get('comment_anonymous_' . $node->type, COMMENT_ANONYMOUS_MAYNOT_CONTACT) == COMMENT_ANONYMOUS_MUST_CONTACT) {
          form_set_error('mail', t('You have to leave an e-mail address.'));
        }
      }
      if ($edit['homepage']) {
        if (!valid_url($edit['homepage'], TRUE)) {
          form_set_error('homepage', t('The URL of your homepage is not valid. Remember that it must be fully qualified, i.e. of the form <code>http://example.com/directory</code>.'));
        }
      }
    }
  }
  return $edit;
}