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moodle/admin/roles/permissions.php

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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* This script serves draft files of current user
*
* @package moodlecore
* @subpackage role
* @copyright 2009 Petr Skoda (skodak) info@skodak.org
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require('../../config.php');
require_once("$CFG->dirroot/$CFG->admin/roles/lib.php");
require_once("permissions_forms.php");
$contextid = required_param('contextid',PARAM_INT);
$roleid = optional_param('roleid', 0, PARAM_INT);
$capability = optional_param('capability', false, PARAM_CAPABILITY);
$confirm = optional_param('confirm', 0, PARAM_BOOL);
$prevent = optional_param('prevent', 0, PARAM_BOOL);
$allow = optional_param('allow', 0, PARAM_BOOL);
$unprohibit = optional_param('unprohibit', 0, PARAM_BOOL);
$prohibit = optional_param('prohibit', 0, PARAM_BOOL);
list($context, $course, $cm) = get_context_info_array($contextid);
$url = new moodle_url('/admin/roles/permissions.php', array('contextid' => $contextid));
if (!$course) {
if ($context->contextlevel == CONTEXT_USER) {
$course = $DB->get_record('course', array('id'=>optional_param('courseid', SITEID, PARAM_INT)), '*', MUST_EXIST);
$user = $DB->get_record('user', array('id'=>$context->instanceid), '*', MUST_EXIST);
$url->param('courseid', $course->id);
$url->param('userid', $user->id);
} else {
$course = $SITE;
}
}
// security first
require_login($course, false, $cm);
require_capability('moodle/role:review', $context);
$PAGE->set_url($url);
$PAGE->set_context($context);
$courseid = $course->id;
$isfrontpage = ($course->id == SITEID);
// These are needed early because of tabs.php
$assignableroles = get_assignable_roles($context, ROLENAME_BOTH);
list($overridableroles, $overridecounts, $nameswithcounts) = get_overridable_roles($context, ROLENAME_BOTH, true);
if ($capability) {
$capability = $DB->get_record('capabilities', array('name'=>$capability), '*', MUST_EXIST);
}
$allowoverrides = has_capability('moodle/role:override', $context);
$allowsafeoverrides = has_capability('moodle/role:safeoverride', $context);
$contextname = print_context_name($context);
$title = get_string('permissionsincontext', 'role', $contextname);
$straction = get_string('permissions', 'role'); // Used by tabs.php
$tabfile = $CFG->dirroot.'/'.$CFG->admin.'/roles/tabs.php';
$currenttab = 'permissions';
$PAGE->set_pagelayout('admin');
$PAGE->set_title($title);
switch ($context->contextlevel) {
case CONTEXT_SYSTEM:
print_error('cannotoverridebaserole', 'error');
break;
case CONTEXT_USER:
$tabfile = $CFG->dirroot.'/user/tabs.php';
if ($isfrontpage) {
$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
$PAGE->set_heading($fullname);
} else {
$PAGE->set_heading($course->fullname);
}
$showroles = 1;
break;
case CONTEXT_COURSECAT:
$PAGE->set_heading("$SITE->fullname: ".get_string("categories"));
break;
case CONTEXT_COURSE:
if ($isfrontpage) {
admin_externalpage_setup('frontpageroles', '', array(), $PAGE->url);
} else {
$PAGE->set_heading($course->fullname);
}
break;
case CONTEXT_MODULE:
$PAGE->set_heading(print_context_name($context, false));
$PAGE->set_cacheable(false);
break;
case CONTEXT_BLOCK:
$PAGE->set_heading($PAGE->course->fullname);
break;
}
// handle confirmations and actions
// We have a capability and overrides are allowed or safe overrides are allowed and this is safe
if ($capability && ($allowoverrides || ($allowsafeoverrides && is_safe_capability($capability)))) {
// If we already know the the role ID, it is overrideable, and we are setting prevent or unprohibit
if (isset($overridableroles[$roleid]) && ($prevent || $unprohibit)) {
// We are preventing
if ($prevent) {
if ($confirm && data_submitted() && confirm_sesskey()) {
role_change_permission($roleid, $context, $capability->name, CAP_PREVENT);
redirect($PAGE->url);
} else {
$a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'role'=>$overridableroles[$roleid], 'context'=>$contextname);
$message = get_string('confirmroleprevent', 'role', $a);
$continueurl = new moodle_url($PAGE->url, array('contextid'=>$context->id, 'roleid'=>$roleid, 'capability'=>$capability->name, 'prevent'=>1, 'sesskey'=>sesskey(), 'confirm'=>1));
}
}
// We are unprohibiting
if ($unprohibit) {
if ($confirm && data_submitted() && confirm_sesskey()) {
role_change_permission($roleid, $context, $capability->name, CAP_INHERIT);
redirect($PAGE->url);
} else {
$a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'role'=>$overridableroles[$roleid], 'context'=>$contextname);
$message = get_string('confirmroleunprohibit', 'role', $a);
$continueurl = new moodle_url($PAGE->url, array('contextid'=>$context->id, 'roleid'=>$roleid, 'capability'=>$capability->name, 'unprohibit'=>1, 'sesskey'=>sesskey(), 'confirm'=>1));
}
}
// Display and print
echo $OUTPUT->header();
include($tabfile);
echo $OUTPUT->heading($title);
echo $OUTPUT->confirm($message, $continueurl, $PAGE->url);
echo $OUTPUT->footer();
die;
}
if ($allow || $prohibit) {
if ($allow) {
$mform = new role_allow_form(null, array($context, $capability, $overridableroles));
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} else if ($data = $mform->get_data() and !empty($data->roleid)) {
$roleid = $data->roleid;
if (isset($overridableroles[$roleid])) {
role_change_permission($roleid, $context, $capability->name, CAP_ALLOW);
}
redirect($PAGE->url);
} else {
$a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'context'=>$contextname);
$message = get_string('roleallowinfo', 'role', $a);
}
}
if ($prohibit) {
$mform = new role_prohibit_form(null, array($context, $capability, $overridableroles));
if ($mform->is_cancelled()) {
redirect($PAGE->url);
} else if ($data = $mform->get_data() and !empty($data->roleid)) {
$roleid = $data->roleid;
if (isset($overridableroles[$roleid])) {
role_change_permission($roleid, $context, $capability->name, CAP_PROHIBIT);
}
redirect($PAGE->url);
} else {
$a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'context'=>$contextname);
$message = get_string('roleprohibitinfo', 'role', $a);
}
}
echo $OUTPUT->header();
include($tabfile);
echo $OUTPUT->heading($title);
echo $OUTPUT->box($message);
$mform->display();
echo $OUTPUT->footer();
die;
}
}
echo $OUTPUT->header();
include($tabfile);
echo $OUTPUT->heading($title);
$table = new permissions_table($context, $contextname, $allowoverrides, $allowsafeoverrides, $overridableroles);
echo $OUTPUT->box_start('generalbox capbox');
// print link to advanced override page
if ($overridableroles) {
$overrideurl = new moodle_url('/admin/roles/override.php', array('contextid' => $context->id));
$select = new single_select($overrideurl, 'roleid', $nameswithcounts);
$select->label = get_string('advancedoverride', 'role');
echo html_writer::tag('div', $OUTPUT->render($select), array('class'=>'advancedoverride'));
}
$table->display();
echo $OUTPUT->box_end();
if ($context->contextlevel > CONTEXT_USER) {
echo html_writer::start_tag('div', array('class'=>'backlink'));
echo html_writer::tag('a', get_string('backto', '', $contextname), array('href'=>get_context_url($context)));
echo html_writer::end_tag('div');
}
echo $OUTPUT->footer($course);
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