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 $returnurl  = optional_param('returnurl', null, PARAM_LOCALURL);
  37
  38 list($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', $context);
  59
  60 navigation_node::override_active_url($url);
  61 $pageurl = new moodle_url($url);
  62 if ($returnurl) {
  63     $pageurl->param('returnurl', $returnurl);
  64 }
  65 $PAGE->set_url($pageurl);
  66
  67 if ($context->contextlevel == CONTEXT_USER and $USER->id != $context->instanceid) {
  68     $PAGE->navbar->includesettingsbase = true;
  69     $PAGE->navigation->extend_for_user($user);
  70     $PAGE->set_context(context_user::instance($user->id));
  71 } else {
  72     $PAGE->set_context($context);
  73 }
  74
  75 $courseid = $course->id;
  76
  77
  78 // These are needed early because of tabs.php.
  79 $assignableroles = get_assignable_roles($context, ROLENAME_BOTH);
  80 list($overridableroles, $overridecounts, $nameswithcounts) = get_overridable_roles($context, ROLENAME_BOTH, true);
  81 if ($capability) {
  82     $capability = $DB->get_record('capabilities', array('name'=>$capability), '*', MUST_EXIST);
  83 }
  84
  85 $allowoverrides     = has_capability('moodle/role:override', $context);
  86 $allowsafeoverrides = has_capability('moodle/role:safeoverride', $context);
  87
  88 $contextname = $context->get_context_name();
  89 $title = get_string('permissionsincontext', 'core_role', $contextname);
  90 $straction = get_string('permissions', 'core_role'); // Used by tabs.php.
  91 $currenttab = 'permissions';
  92
  93 $PAGE->set_pagelayout('admin');
  94 if ($context->contextlevel == CONTEXT_BLOCK) {
  95     // Do not show blocks when changing block's settings, it is confusing.
  96     $PAGE->blocks->show_only_fake_blocks(true);
  97 }
  98
  99 $PAGE->set_title($title);
 100 switch ($context->contextlevel) {
 101     case CONTEXT_SYSTEM:
 102         print_error('cannotoverridebaserole', 'error');
 103         break;
 104     case CONTEXT_USER:
 105         $fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
 106         $PAGE->set_heading($fullname);
 107         $showroles = 1;
 108         break;
 109     case CONTEXT_COURSECAT:
 110         $PAGE->set_heading($SITE->fullname);
 111         break;
 112     case CONTEXT_COURSE:
 113         if ($isfrontpage) {
 114             $PAGE->set_heading(get_string('frontpage', 'admin'));
 115         } else {
 116             $PAGE->set_heading($course->fullname);
 117         }
 118         break;
 119     case CONTEXT_MODULE:
 120         $PAGE->set_heading($context->get_context_name(false));
 121         $PAGE->set_cacheable(false);
 122         break;
 123     case CONTEXT_BLOCK:
 124         $PAGE->set_heading($PAGE->course->fullname);
 125         break;
 126 }
 127
 128 // Handle confirmations and actions.
 129 // We have a capability and overrides are allowed or safe overrides are allowed and this is safe.
 130 if ($capability && ($allowoverrides || ($allowsafeoverrides && is_safe_capability($capability)))) {
 131     // If we already know the the role ID, it is overrideable, and we are setting prevent or unprohibit.
 132     if (isset($overridableroles[$roleid]) && ($prevent || $unprohibit)) {
 133         // We are preventing.
 134         if ($prevent) {
 135             if ($confirm && data_submitted() && confirm_sesskey()) {
 136                 role_change_permission($roleid, $context, $capability->name, CAP_PREVENT);
 137                 redirect($PAGE->url);
 138
 139             } else {
 140                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'role'=>$overridableroles[$roleid], 'context'=>$contextname);
 141                 $message = get_string('confirmroleprevent', 'core_role', $a);
 142                 $continueurl = new moodle_url($PAGE->url,
 143                     array('contextid'=>$context->id, 'roleid'=>$roleid, 'capability'=>$capability->name, 'prevent'=>1, 'sesskey'=>sesskey(), 'confirm'=>1));
 144             }
 145         }
 146         // We are unprohibiting.
 147         if ($unprohibit) {
 148             if ($confirm && data_submitted() && confirm_sesskey()) {
 149                 role_change_permission($roleid, $context, $capability->name, CAP_INHERIT);
 150                 redirect($PAGE->url);
 151             } else {
 152                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'role'=>$overridableroles[$roleid], 'context'=>$contextname);
 153                 $message = get_string('confirmroleunprohibit', 'core_role', $a);
 154                 $continueurl = new moodle_url($PAGE->url,
 155                     array('contextid'=>$context->id, 'roleid'=>$roleid, 'capability'=>$capability->name, 'unprohibit'=>1, 'sesskey'=>sesskey(), 'confirm'=>1));
 156             }
 157         }
 158         // Display and print.
 159         echo $OUTPUT->header();
 160         echo $OUTPUT->heading($title);
 161         echo $OUTPUT->confirm($message, $continueurl, $PAGE->url);
 162         echo $OUTPUT->footer();
 163         die;
 164     }
 165
 166     if ($allow || $prohibit) {
 167         if ($allow) {
 168             $mform = new core_role_permission_allow_form(null, array($context, $capability, $overridableroles));
 169             if ($mform->is_cancelled()) {
 170                 redirect($PAGE->url);
 171             } else if ($data = $mform->get_data() and !empty($data->roleid)) {
 172                 $roleid = $data->roleid;
 173                 if (isset($overridableroles[$roleid])) {
 174                     role_change_permission($roleid, $context, $capability->name, CAP_ALLOW);
 175                 }
 176                 redirect($PAGE->url);
 177             } else {
 178                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'context'=>$contextname);
 179                 $message = get_string('roleallowinfo', 'core_role', $a);
 180             }
 181         }
 182         if ($prohibit) {
 183             $mform = new core_role_permission_prohibit_form(null, array($context, $capability, $overridableroles));
 184             if ($mform->is_cancelled()) {
 185                 redirect($PAGE->url);
 186             } else if ($data = $mform->get_data() and !empty($data->roleid)) {
 187                 $roleid = $data->roleid;
 188                 if (isset($overridableroles[$roleid])) {
 189                     role_change_permission($roleid, $context, $capability->name, CAP_PROHIBIT);
 190                 }
 191                 redirect($PAGE->url);
 192             } else {
 193                 $a = (object)array('cap'=>get_capability_docs_link($capability)." ($capability->name)", 'context'=>$contextname);
 194                 $message = get_string('roleprohibitinfo', 'core_role', $a);
 195             }
 196         }
 197         echo $OUTPUT->header();
 198         echo $OUTPUT->heading($title);
 199         echo $OUTPUT->box($message);
 200         $mform->display();
 201         echo $OUTPUT->footer();
 202         die;
 203     }
 204 }
 205
 206 echo $OUTPUT->header();
 207 echo $OUTPUT->heading($title);
 208
 209 $adminurl = new moodle_url('/admin/');
 210 $arguments = array('contextid' => $contextid,
 211                 'contextname' => $contextname,
 212                 'adminurl' => $adminurl->out());
 213 $PAGE->requires->strings_for_js(
 214                                 array('roleprohibitinfo', 'roleprohibitheader', 'roleallowinfo', 'roleallowheader',
 215                                     'confirmunassigntitle', 'confirmroleunprohibit', 'confirmroleprevent', 'confirmunassignyes',
 216                                     'confirmunassignno', 'deletexrole'), 'core_role');
 217 $PAGE->requires->js_call_amd('core/permissionmanager', 'initialize', array($arguments));
 218 $table = new core_role_permissions_table($context, $contextname, $allowoverrides, $allowsafeoverrides, $overridableroles);
 219 echo $OUTPUT->box_start('generalbox capbox');
 220 // Print link to advanced override page.
 221 if ($overridableroles) {
 222     $overrideurl = new moodle_url('/admin/roles/override.php', array('contextid' => $context->id));
 223     $select = new single_select($overrideurl, 'roleid', $nameswithcounts);
 224     $select->label = get_string('advancedoverride', 'core_role');
 225     echo html_writer::tag('div', $OUTPUT->render($select), array('class'=>'advancedoverride'));
 226 }
 227 $table->display();
 228 echo $OUTPUT->box_end();
 229
 230
 231 if ($context->contextlevel > CONTEXT_USER) {
 232
 233     if ($returnurl) {
 234         $url = new moodle_url($returnurl);
 235     } else {
 236         $url = $context->get_url();
 237     }
 238
 239     echo html_writer::start_tag('div', array('class'=>'backlink'));
 240     echo html_writer::tag('a', get_string('backto', '', $contextname), array('href' => $url));
 241     echo html_writer::end_tag('div');
 242 }
 243
 244 echo $OUTPUT->footer($course);