admin/roles/permissions.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Change permissions.
  19  *
  20  * @package    core_role
  21  * @copyright  2009 Petr Skoda {@link http://skodak.org}
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 require('../../config.php');
  26
  27 $contextid  = required_param('contextid', PARAM_INT);
  28
  29 $roleid     = optional_param('roleid', 0, PARAM_INT);
  30 $capability = optional_param('capability', false, PARAM_CAPABILITY);
  31 $confirm    = optional_param('confirm', 0, PARAM_BOOL);
  32 $prevent    = optional_param('prevent', 0, PARAM_BOOL);
  33 $allow      = optional_param('allow', 0, PARAM_BOOL);
  34 $unprohibit = optional_param('unprohibit', 0, PARAM_BOOL);
  35 $prohibit   = optional_param('prohibit', 0, PARAM_BOOL);
  36 $return     = optional_param('return', null, PARAM_ALPHANUMEXT);
  37
  38 list($context, $course, $cm) = get_context_info_array($contextid);
  39
  40 $url = new moodle_url('/admin/roles/permissions.php', array('contextid' => $contextid));
  41
  42 if ($course) {
  43     $isfrontpage = ($course->id == SITEID);
  44 } else {
  45     $isfrontpage = false;
  46     if ($context->contextlevel == CONTEXT_USER) {
  47         $course = $DB->get_record('course', array('id'=>optional_param('courseid', SITEID, PARAM_INT)), '*', MUST_EXIST);
  48         $user = $DB->get_record('user', array('id'=>$context->instanceid), '*', MUST_EXIST);
  49         $url->param('courseid', $course->id);
  50         $url->param('userid', $user->id);
  51     } else {
  52         $course = $SITE;
  53     }
  54 }
  55
  56 // Security first.
  57 require_login($course, false, $cm);
  58 require_capability('moodle/role:review', $context);
  59 $PAGE->set_url($url);
  60
  61 if ($context->contextlevel == CONTEXT_USER and $USER->id != $context->instanceid) {
  62     $PAGE->navigation->extend_for_user($user);
  63     $PAGE->set_context(context_course::instance($course->id));
  64 } else {
  65     $PAGE->set_context($context);
  66 }
  67
  68 $courseid = $course->id;
  69
  70
  71 // These are needed early because of tabs.php.
  72 $assignableroles = get_assignable_roles($context, ROLENAME_BOTH);
  73 list($overridableroles, $overridecounts, $nameswithcounts) = get_overridable_roles($context, ROLENAME_BOTH, true);
  74 if ($capability) {
  75     $capability = $DB->get_record('capabilities', array('name'=>$capability), '*', MUST_EXIST);
  76 }
  77
  78 $allowoverrides     = has_capability('moodle/role:override', $context);
  79 $allowsafeoverrides = has_capability('moodle/role:safeoverride', $context);
  80
  81 $contextname = $context->get_context_name();
  82 $title = get_string('permissionsincontext', 'core_role', $contextname);
  83 $straction = get_string('permissions', 'core_role'); // Used by tabs.php.
  84 $currenttab = 'permissions';
  85
  86 $PAGE->set_pagelayout('admin');
  87 $PAGE->set_title($title);
  88 switch ($context->contextlevel) {
  89     case CONTEXT_SYSTEM:
  90         print_error('cannotoverridebaserole', 'error');
  91         break;
  92     case CONTEXT_USER:
  93         $fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
  94         $PAGE->set_heading($fullname);
  95         $showroles = 1;
  96         break;
  97     case CONTEXT_COURSECAT:
  98         $PAGE->set_heading($SITE->fullname);
  99         break;
 100     case CONTEXT_COURSE:
 101         if ($isfrontpage) {
 102             $PAGE->set_heading(get_string('frontpage', 'admin'));
 103         } else {
 104             $PAGE->set_heading($course->fullname);
 105         }
 106         break;
 107     case CONTEXT_MODULE:
 108         $PAGE->set_heading($context->get_context_name(false));
 109         $PAGE->set_cacheable(false);
 110         break;
 111     case CONTEXT_BLOCK:
 112         $PAGE->set_heading($PAGE->course->fullname);
 113         break;
 114 }
 115
 116 // Handle confirmations and actions.
 117 // We have a capability and overrides are allowed or safe overrides are allowed and this is safe.
 118 if ($capability && ($allowoverrides || ($allowsafeoverrides && is_safe_capability($capability)))) {
 119     // If we already know the the role ID, it is overrideable, and we are setting prevent or unprohibit.
 120     if (isset($overridableroles[$roleid]) && ($prevent || $unprohibit)) {
 121         // We are preventing.
 122         if ($prevent) {
 123             if ($confirm && data_submitted() && confirm_sesskey()) {
 124                 role_change_permission($roleid, $context, $capability->name, CAP_PREVENT);
 125                 redirect($PAGE->url);
 126
 127             } else {
 128                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'role'=>$overridableroles[$roleid], 'context'=>$contextname);
 129                 $message = get_string('confirmroleprevent', 'core_role', $a);
 130                 $continueurl = new moodle_url($PAGE->url,
 131                     array('contextid'=>$context->id, 'roleid'=>$roleid, 'capability'=>$capability->name, 'prevent'=>1, 'sesskey'=>sesskey(), 'confirm'=>1));
 132             }
 133         }
 134         // We are unprohibiting.
 135         if ($unprohibit) {
 136             if ($confirm && data_submitted() && confirm_sesskey()) {
 137                 role_change_permission($roleid, $context, $capability->name, CAP_INHERIT);
 138                 redirect($PAGE->url);
 139             } else {
 140                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'role'=>$overridableroles[$roleid], 'context'=>$contextname);
 141                 $message = get_string('confirmroleunprohibit', 'core_role', $a);
 142                 $continueurl = new moodle_url($PAGE->url,
 143                     array('contextid'=>$context->id, 'roleid'=>$roleid, 'capability'=>$capability->name, 'unprohibit'=>1, 'sesskey'=>sesskey(), 'confirm'=>1));
 144             }
 145         }
 146         // Display and print.
 147         echo $OUTPUT->header();
 148         echo $OUTPUT->heading($title);
 149         echo $OUTPUT->confirm($message, $continueurl, $PAGE->url);
 150         echo $OUTPUT->footer();
 151         die;
 152     }
 153
 154     if ($allow || $prohibit) {
 155         if ($allow) {
 156             $mform = new core_role_permission_allow_form(null, array($context, $capability, $overridableroles));
 157             if ($mform->is_cancelled()) {
 158                 redirect($PAGE->url);
 159             } else if ($data = $mform->get_data() and !empty($data->roleid)) {
 160                 $roleid = $data->roleid;
 161                 if (isset($overridableroles[$roleid])) {
 162                     role_change_permission($roleid, $context, $capability->name, CAP_ALLOW);
 163                 }
 164                 redirect($PAGE->url);
 165             } else {
 166                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'context'=>$contextname);
 167                 $message = get_string('roleallowinfo', 'core_role', $a);
 168             }
 169         }
 170         if ($prohibit) {
 171             $mform = new core_role_permission_prohibit_form(null, array($context, $capability, $overridableroles));
 172             if ($mform->is_cancelled()) {
 173                 redirect($PAGE->url);
 174             } else if ($data = $mform->get_data() and !empty($data->roleid)) {
 175                 $roleid = $data->roleid;
 176                 if (isset($overridableroles[$roleid])) {
 177                     role_change_permission($roleid, $context, $capability->name, CAP_PROHIBIT);
 178                 }
 179                 redirect($PAGE->url);
 180             } else {
 181                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'context'=>$contextname);
 182                 $message = get_string('roleprohibitinfo', 'core_role', $a);
 183             }
 184         }
 185         echo $OUTPUT->header();
 186         echo $OUTPUT->heading($title);
 187         echo $OUTPUT->box($message);
 188         $mform->display();
 189         echo $OUTPUT->footer();
 190         die;
 191     }
 192 }
 193
 194 echo $OUTPUT->header();
 195 echo $OUTPUT->heading($title);
 196
 197 $table = new core_role_permissions_table($context, $contextname, $allowoverrides, $allowsafeoverrides, $overridableroles);
 198 echo $OUTPUT->box_start('generalbox capbox');
 199 // Print link to advanced override page.
 200 if ($overridableroles) {
 201     $overrideurl = new moodle_url('/admin/roles/override.php', array('contextid' => $context->id));
 202     $select = new single_select($overrideurl, 'roleid', $nameswithcounts);
 203     $select->label = get_string('advancedoverride', 'core_role');
 204     echo html_writer::tag('div', $OUTPUT->render($select), array('class'=>'advancedoverride'));
 205 }
 206 $table->display();
 207 echo $OUTPUT->box_end();
 208
 209
 210 if ($context->contextlevel > CONTEXT_USER) {
 211
 212     if ($context->contextlevel === CONTEXT_COURSECAT && $return === 'management') {
 213         $url = new moodle_url('/course/management.php', array('categoryid' => $context->instanceid));
 214     } else {
 215         $url = $context->get_url();
 216     }
 217
 218     echo html_writer::start_tag('div', array('class'=>'backlink'));
 219     echo html_writer::tag('a', get_string('backto', '', $contextname), array('href' => $url));
 220     echo html_writer::end_tag('div');
 221 }
 222
 223 echo $OUTPUT->footer($course);