1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
<?php
# Lifter002: TODO
# Lifter007: TODO
# Lifter003: TODO
# Lifter010: TODO
DEFINE ("CRS_NOTIFICATION", "1");
DEFINE ("CRS_NO_NOTIFICATION", "2");
DEFINE ("CRS_ADMIN_ROLE", "1");
DEFINE ("CRS_MEMBER_ROLE", "2");
DEFINE ("CRS_TUTOR_ROLE", "3");
DEFINE ("CRS_PASSED_VALUE", "0");
DEFINE ("OPERATION_VISIBLE", "visible");
DEFINE ("OPERATION_READ", "read");
DEFINE ("OPERATION_WRITE", "write");
DEFINE ("OPERATION_DELETE", "delete");
DEFINE ("OPERATION_CREATE_LM", "create_lm");
DEFINE ("OPERATION_CREATE_TEST", "create_tst");
DEFINE ("OPERATION_CREATE_QUESTIONS", "create_qps");
DEFINE ("OPERATION_CREATE_FILE", "create_file");
/**
* class to handle ILIAS 3 access controls
*
* This class contains methods to handle permissions on connected objects.
*
* @author Arne Schröder <schroeder@data-quest.de>
* @access public
* @modulegroup elearning_interface_modules
* @module Ilias3ConnectedPermission
* @package ELearning-Interface
*/
class Ilias3ConnectedPermissions extends ConnectedPermissions
{
var $operations;
var $allowed_operations;
var $tree_allowed_operations;
var $USER_OPERATIONS;
var $AUTHOR_OPERATIONS;
/**
* constructor
*
* init class.
* @access
* @param string $cms system-type
*/
function __construct($cms)
{
global $connected_cms;
parent::__construct($cms);
$this->readData();
if ($connected_cms[$this->cms_type]->user->isConnected())
{
$roles = $this->getUserRoles();
$connected_cms[$this->cms_type]->user->setRoles( $roles );
}
$this->USER_OPERATIONS = [OPERATION_VISIBLE, OPERATION_READ];
// $this->AUTHOR_OPERATIONS = array(OPERATION_VISIBLE, OPERATION_READ, OPERATION_CREATE_LM, OPERATION_CREATE_TEST, OPERATION_CREATE_QUESTIONS, OPERATION_CREATE_FILE);
}
/**
* read data
*
* reads acces control data from database
* @access public
*/
function readData()
{
global $connected_cms;
$this->operations = $connected_cms[$this->cms_type]->soap_client->getOperations();
}
/**
* check user permissions
*
* checks user permissions for connected course and changes setting if necessary
* @access public
* @param string $course_id course-id
* @return boolean returns false on error
*/
function checkUserPermissions($course_id)
{
global $connected_cms, $messages;
if (!$course_id) {
return false;
}
if (!$connected_cms[$this->cms_type]->user->getId()) {
return false;
}
// get course role folder and local roles
$local_roles = $connected_cms[$this->cms_type]->soap_client->getLocalRoles($course_id);
$active_role = "";
$proper_role = "";
$user_crs_role = $connected_cms[$this->cms_type]->crs_roles[$GLOBALS['perm']->get_studip_perm(Context::getId())];
if (is_array($local_roles)) {
foreach ($local_roles as $key => $role_data) { // check only if local role is il_crs_member, -tutor or -admin
if (mb_strpos($role_data["title"], "_crs_") !== false) {
if (in_array($role_data["obj_id"], $connected_cms[$this->cms_type]->user->getRoles())) {
$active_role = $role_data["obj_id"];
}
if (mb_strpos($role_data["title"], $user_crs_role) > 0) {
$proper_role = $role_data["obj_id"];
}
}
}
}
// is user already course-member? otherwise add member with proper role
$is_member = $connected_cms[$this->cms_type]->soap_client->isMember( $connected_cms[$this->cms_type]->user->getId(), $course_id);
if (!$is_member) {
$member_data["usr_id"] = $connected_cms[$this->cms_type]->user->getId();
$member_data["ref_id"] = $course_id;
$member_data["status"] = CRS_NO_NOTIFICATION;
$type = "";
switch ($user_crs_role) {
case "admin":
$member_data["role"] = CRS_ADMIN_ROLE;
$type = "Admin";
break;
case "tutor":
$member_data["role"] = CRS_TUTOR_ROLE;
$type = "Tutor";
break;
case "member":
$member_data["role"] = CRS_MEMBER_ROLE;
$type = "Member";
break;
default:
}
$member_data["passed"] = CRS_PASSED_VALUE;
if ($type != "")
{
$connected_cms[$this->cms_type]->soap_client->addMember( $connected_cms[$this->cms_type]->user->getId(), $type, $course_id );
if ($GLOBALS["debug"] == true)
echo "addMember";
}
}
// check if user has proper local role
// if not, change it
if ($active_role != $proper_role)
{
if ($active_role != "")
{
$connected_cms[$this->cms_type]->soap_client->deleteUserRoleEntry( $connected_cms[$this->cms_type]->user->getId(), $active_role);
if ($GLOBALS["debug"] == true)
echo "Role $active_role deleted.";
}
if ($proper_role != "")
{
$connected_cms[$this->cms_type]->soap_client->addUserRoleEntry( $connected_cms[$this->cms_type]->user->getId(), $proper_role);
if ($GLOBALS["debug"] == true)
echo "Role $proper_role added.";
}
}
if (!$this->getContentModulePerms($course_id)) {
$messages["info"] .= _("Für den zugeordneten ILIAS-Kurs konnten keine Berechtigungen ermittelt werden.") . "<br>";
}
return true;
}
/**
* get user roles
*
* returns roles for current user
* @access public
* @return array role-ids
*/
function getUserRoles()
{
global $connected_cms;
return $connected_cms[$this->cms_type]->soap_client->getUserRoles($connected_cms[$this->cms_type]->user->getId());
}
/**
* get permissions for content module
*
* returns allowed operations for given user and module
* @access public
* @param string $module_id module-id
* @return boolean returns false on error
*/
function getContentModulePerms($module_id)
{
global $connected_cms, $current_module;
if (is_array($connected_cms[$this->cms_type]->content_module[$current_module]->allowed_operations))
return true;
$this->allowed_operations = [];
$this->tree_allowed_operations = $connected_cms[$this->cms_type]->soap_client->getObjectTreeOperations(
$module_id,
$connected_cms[$this->cms_type]->user->getId()
);
if (!is_array($this->tree_allowed_operations)) {
return false;
}
$no_permission = false;
if (isset($current_module)) { //TODO: fixes Warning:Creating default object from empty value - possible side effects
if ((! in_array($this->operations[OPERATION_READ], $this->tree_allowed_operations)) OR (! in_array($this->operations[OPERATION_VISIBLE], $this->tree_allowed_operations)))
$no_permission = true;
if ($no_permission == false)
$connected_cms[$this->cms_type]->content_module[$current_module]->allowed_operations = $this->tree_allowed_operations;
else
$connected_cms[$this->cms_type]->content_module[$current_module]->allowed_operations = false;
}
return true;
}
/**
* get operation
*
* returns id for given operation-string
* @access public
* @param string $operation operation
* @return integer operation-id
*/
function getOperation($operation)
{
return $this->operations[$operation];
}
/**
* get operation-ids
*
* returns an array of operation-ids
* @param array $operation operation
* @return array|false operation-ids
*/
public function getOperationArray($operation)
{
if (!is_array($operation)) {
return false;
}
return array_map(
function ($operation_name) {
return $this->operations[$operation_name];
},
$operation
);
}
}
|
