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<?php
/**
* @file
* Plugin to provide access control based on user permission strings.
*/
/**
* Plugins are described by creating a $plugin array which will be used
* by the system that includes this file.
*/
$plugin = array(
'title' => t("User: permission"),
'description' => t('Control access by permission string.'),
'callback' => 'ctools_perm_ctools_access_check',
'default' => array('perm' => 'access content'),
'settings form' => 'ctools_perm_ctools_access_settings',
'summary' => 'ctools_perm_ctools_access_summary',
'required context' => new ctools_context_required(t('User'), 'user'),
);
/**
* Settings form for the 'by perm' access plugin
*/
function ctools_perm_ctools_access_settings($form, &$form_state, $conf) {
$perms = array();
// Get list of permissions
foreach (module_list(FALSE, FALSE, TRUE) as $module) {
// By keeping them keyed by module we can use optgroups with the
// 'select' type.
if ($permissions = module_invoke($module, 'permission')) {
foreach ($permissions as $id => $permission) {
$perms[$module][$id] = $permission['title'];
}
}
}
$form['settings']['perm'] = array(
'#type' => 'select',
'#options' => $perms,
'#title' => t('Permission'),
'#default_value' => $conf['perm'],
'#description' => t('Only users with the selected permission flag will be able to access this.'),
);
return $form;
}
/**
* Check for access.
*/
function ctools_perm_ctools_access_check($conf, $context) {
// As far as I know there should always be a context at this point, but this
// is safe.
if (empty($context) || empty($context->data)) {
return FALSE;
}
return user_access($conf['perm'], $context->data);
}
/**
* Provide a summary description based upon the checked roles.
*/
function ctools_perm_ctools_access_summary($conf, $context) {
if (!isset($conf['perm'])) {
return t('Error, unset permission');
}
$permissions = module_invoke_all('permission');
return t('@identifier has "@perm"', array('@identifier' => $context->identifier, '@perm' => $permissions[$conf['perm']]['title']));
}
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