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