mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
f803704d91
See http://www.silverstripe.org/ss-2013-005-privilege-escalation-through-apply-roles-assignment/
332 lines
11 KiB
PHP
332 lines
11 KiB
PHP
<?php
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/**
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* Shows a categorized list of available permissions (through {@link Permission::get_codes()}).
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* Permissions which are assigned to a given {@link Group} record
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* (either directly, inherited from parent groups, or through a {@link PermissionRole})
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* will be checked automatically. All checkboxes for "inherited" permissions will be readonly.
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*
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* The field can gets its assignment data either from {@link Group} or {@link PermissionRole} records.
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*
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* @package framework
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* @subpackage security
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*/
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class PermissionCheckboxSetField extends FormField {
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/**
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* @var Array Filter certain permission codes from the output.
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* Useful to simplify the interface
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*/
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protected $hiddenPermissions = array();
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/**
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* @var SS_List
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*/
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protected $records = null;
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/**
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* @var array Array Nested array in same notation as {@link CheckboxSetField}.
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*/
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protected $source = null;
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/**
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* @param String $name
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* @param String $title
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* @param String $managedClass
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* @param String $filterField
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* @param Group|SS_List $records One or more {@link Group} or {@link PermissionRole} records
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* used to determine permission checkboxes.
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* Caution: saveInto() can only be used with a single record, all inherited permissions will be marked readonly.
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* Setting multiple groups only makes sense in a readonly context. (Optional)
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*/
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public function __construct($name, $title, $managedClass, $filterField, $records = null) {
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$this->filterField = $filterField;
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$this->managedClass = $managedClass;
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if($records instanceof SS_List) {
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$this->records = $records;
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} elseif($records instanceof Group) {
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$this->records = new ArrayList(array($records));
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} elseif($records) {
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throw new InvalidArgumentException(
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'$record should be either a Group record, or a SS_List of Group records');
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}
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// Get all available codes in the system as a categorized nested array
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$this->source = Permission::get_codes(true);
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parent::__construct($name, $title);
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}
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/**
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* @param Array $codes
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*/
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public function setHiddenPermissions($codes) {
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$this->hiddenPermissions = $codes;
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}
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/**
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* @return Array
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*/
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public function getHiddenPermissions() {
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return $this->hiddenPermissions;
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}
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public function Field($properties = array()) {
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Requirements::css(FRAMEWORK_DIR . '/css/CheckboxSetField.css');
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Requirements::javascript(FRAMEWORK_DIR . '/javascript/PermissionCheckboxSetField.js');
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$uninheritedCodes = array();
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$inheritedCodes = array();
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$records = ($this->records) ? $this->records : new ArrayList();
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// Get existing values from the form record (assuming the formfield name is a join field on the record)
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if(is_object($this->form)) {
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$record = $this->form->getRecord();
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if(
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$record
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&& (is_a($record, 'Group') || is_a($record, 'PermissionRole'))
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&& !$records->find('ID', $record->ID)
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) {
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$records->push($record);
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}
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}
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// Get all 'inherited' codes not directly assigned to the group (which is stored in $values)
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foreach($records as $record) {
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// Get all uninherited permissions
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$relationMethod = $this->name;
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foreach($record->$relationMethod() as $permission) {
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if(!isset($uninheritedCodes[$permission->Code])) $uninheritedCodes[$permission->Code] = array();
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$uninheritedCodes[$permission->Code][] = _t(
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'PermissionCheckboxSetField.AssignedTo', 'assigned to "{title}"',
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array('title' => $record->Title)
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);
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}
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// Special case for Group records (not PermissionRole):
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// Determine inherited assignments
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if(is_a($record, 'Group')) {
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// Get all permissions from roles
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if ($record->Roles()->Count()) {
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foreach($record->Roles() as $role) {
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foreach($role->Codes() as $code) {
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if (!isset($inheritedCodes[$code->Code])) $inheritedCodes[$code->Code] = array();
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$inheritedCodes[$code->Code][] = _t(
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'PermissionCheckboxSetField.FromRole',
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'inherited from role "{title}"',
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'A permission inherited from a certain permission role',
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array('title' => $role->Title)
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);
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}
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}
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}
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// Get from parent groups
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$parentGroups = $record->getAncestors();
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if ($parentGroups) {
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foreach ($parentGroups as $parent) {
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if (!$parent->Roles()->Count()) continue;
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foreach($parent->Roles() as $role) {
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if ($role->Codes()) {
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foreach($role->Codes() as $code) {
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if (!isset($inheritedCodes[$code->Code])) $inheritedCodes[$code->Code] = array();
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$inheritedCodes[$code->Code][] = _t(
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'PermissionCheckboxSetField.FromRoleOnGroup',
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'inherited from role "%s" on group "%s"',
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'A permission inherited from a role on a certain group',
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array('roletitle' => $role->Title, 'grouptitle' => $parent->Title)
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);
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}
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}
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}
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if ($parent->Permissions()->Count()) {
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foreach($parent->Permissions() as $permission) {
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if (!isset($inheritedCodes[$permission->Code])) {
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$inheritedCodes[$permission->Code] = array();
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}
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$inheritedCodes[$permission->Code][] =
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_t(
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'PermissionCheckboxSetField.FromGroup',
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'inherited from group "{title}"',
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'A permission inherited from a certain group',
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array('title' => $parent->Title)
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);
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}
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}
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}
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}
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}
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}
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$odd = 0;
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$options = '';
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$globalHidden = (array)Config::inst()->get('Permission', 'hidden_permissions');
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if($this->source) {
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$privilegedPermissions = Permission::config()->privileged_permissions;
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// loop through all available categorized permissions and see if they're assigned for the given groups
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foreach($this->source as $categoryName => $permissions) {
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$options .= "<li><h5>$categoryName</h5></li>";
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foreach($permissions as $code => $permission) {
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if(in_array($code, $this->hiddenPermissions)) continue;
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if(in_array($code, $globalHidden)) continue;
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$value = $permission['name'];
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$odd = ($odd + 1) % 2;
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$extraClass = $odd ? 'odd' : 'even';
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$extraClass .= ' val' . str_replace(' ', '', $code);
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$itemID = $this->id() . '_' . preg_replace('/[^a-zA-Z0-9]+/', '', $code);
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$checked = $disabled = $inheritMessage = '';
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$checked = (isset($uninheritedCodes[$code]) || isset($inheritedCodes[$code]))
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? ' checked="checked"'
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: '';
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$title = $permission['help']
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? 'title="' . htmlentities($permission['help'], ENT_COMPAT, 'UTF-8') . '" '
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: '';
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if (isset($inheritedCodes[$code])) {
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// disable inherited codes, as any saving logic would be too complicate to express in this
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// interface
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$disabled = ' disabled="true"';
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$inheritMessage = ' (' . join(', ', $inheritedCodes[$code]) . ')';
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} elseif($this->records && $this->records->Count() > 1 && isset($uninheritedCodes[$code])) {
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// If code assignments are collected from more than one "source group",
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// show its origin automatically
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$inheritMessage = ' (' . join(', ', $uninheritedCodes[$code]).')';
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}
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// Disallow modification of "privileged" permissions unless currently logged-in user is an admin
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if(!Permission::check('ADMIN') && in_array($code, $privilegedPermissions)) {
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$disabled = ' disabled="true"';
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}
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// If the field is readonly, always mark as "disabled"
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if($this->readonly) $disabled = ' disabled="true"';
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$inheritMessage = '<small>' . $inheritMessage . '</small>';
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$icon = ($checked) ? 'accept' : 'decline';
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// If the field is readonly, add a span that will replace the disabled checkbox input
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if($this->readonly) {
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$options .= "<li class=\"$extraClass\">"
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. "<input id=\"$itemID\"$disabled name=\"$this->name[$code]\" type=\"checkbox\""
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. " value=\"$code\"$checked class=\"checkbox\" />"
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. "<label {$title}for=\"$itemID\">"
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. "<span class=\"ui-button-icon-primary ui-icon btn-icon-$icon\"></span>"
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. "$value$inheritMessage</label>"
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. "</li>\n";
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} else {
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$options .= "<li class=\"$extraClass\">"
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. "<input id=\"$itemID\"$disabled name=\"$this->name[$code]\" type=\"checkbox\""
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. " value=\"$code\"$checked class=\"checkbox\" />"
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. "<label {$title}for=\"$itemID\">$value$inheritMessage</label>"
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. "</li>\n";
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}
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}
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}
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}
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if($this->readonly) {
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return "<ul id=\"{$this->id()}\" class=\"optionset checkboxsetfield{$this->extraClass()}\">\n" .
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"<li class=\"help\">" .
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_t(
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'Permissions.UserPermissionsIntro',
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'Assigning groups to this user will adjust the permissions they have.'
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. ' See the groups section for details of permissions on individual groups.'
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) .
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"</li>" .
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$options .
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"</ul>\n";
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} else {
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return "<ul id=\"{$this->id()}\" class=\"optionset checkboxsetfield{$this->extraClass()}\">\n" .
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$options .
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"</ul>\n";
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}
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}
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/**
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* Update the permission set associated with $record DataObject
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*
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* @param DataObject $record
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*/
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public function saveInto(DataObjectInterface $record) {
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$fieldname = $this->name;
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$managedClass = $this->managedClass;
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// Remove all "privileged" permissions if the currently logged-in user is not an admin
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$privilegedPermissions = Permission::config()->privileged_permissions;
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if(!Permission::check('ADMIN')) {
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foreach($this->value as $id => $bool) {
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if(in_array($id, $privilegedPermissions)) {
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unset($this->value[$id]);
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}
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}
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}
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// remove all permissions and re-add them afterwards
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$permissions = $record->$fieldname();
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foreach ( $permissions as $permission ) {
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$permission->delete();
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}
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if($fieldname && $record && ($record->has_many($fieldname) || $record->many_many($fieldname))) {
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if(!$record->ID) $record->write(); // We need a record ID to write permissions
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$idList = array();
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if($this->value) foreach($this->value as $id => $bool) {
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if($bool) {
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$perm = new $managedClass();
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$perm->{$this->filterField} = $record->ID;
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$perm->Code = $id;
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$perm->write();
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}
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}
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}
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}
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/**
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* @return PermissionCheckboxSetField_Readonly
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*/
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public function performReadonlyTransformation() {
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$readonly = new PermissionCheckboxSetField_Readonly(
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$this->name,
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$this->title,
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$this->managedClass,
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$this->filterField,
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$this->records
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);
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return $readonly;
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}
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/**
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* Retrieves all permission codes for the currently set records
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*
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* @return array
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*/
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public function getAssignedPermissionCodes() {
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if(!$this->records) return false;
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// TODO
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return $codes;
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}
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}
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/**
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* Readonly version of a {@link PermissionCheckboxSetField} -
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* uses the same structure, but has all checkboxes disabled.
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*
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* @package framework
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* @subpackage security
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*/
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class PermissionCheckboxSetField_Readonly extends PermissionCheckboxSetField {
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protected $readonly = true;
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public function saveInto(DataObjectInterface $record) {
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return false;
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}
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}
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