ILIAS  release_6 Revision v6.24-5-g0c8bfefb3b8
class.ilObjFileBasedLMAccess.php
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1<?php
2
3/* Copyright (c) 1998-2011 ILIAS open source, Extended GPL, see docs/LICENSE */
4
5include_once("./Services/Object/classes/class.ilObjectAccess.php");
6
17{
21 protected $user;
22
26 protected $lng;
27
31 protected $rbacsystem;
32
36 protected $access;
37
38
42 public function __construct()
43 {
44 global $DIC;
45
46 $this->user = $DIC->user();
47 $this->lng = $DIC->language();
48 $this->rbacsystem = $DIC->rbac()->system();
49 $this->access = $DIC->access();
50 }
51
52 public static $startfile;
53
66 public function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = "")
67 {
70 $ilAccess = $this->access;
71
72 if ($a_user_id == "") {
73 $a_user_id = $ilUser->getId();
74 }
75
76 switch ($a_permission) {
77 case "read":
78
79 if (ilObjFileBasedLMAccess::_determineStartUrl($a_obj_id) == "") {
80 $ilAccess->addInfoItem(IL_NO_OBJECT_ACCESS, $lng->txt("offline"));
81 return false;
82 }
83 break;
84 }
85 return true;
86 }
87
100 public static function _getCommands()
101 {
102 $commands = array(
103 array("permission" => "read", "cmd" => "view", "lang_var" => "show",
104 "default" => true),
105 array("permission" => "write", "cmd" => "edit", "lang_var" => "edit_content"),
106 array("permission" => "write", "cmd" => "properties", "lang_var" => "settings")
107 );
108
109 return $commands;
110 }
111
112 //
113 // access relevant methods
114 //
115
119 public static function _determineStartUrl($a_id)
120 {
121 global $DIC;
122
123 $ilDB = $DIC->database();
124
125 if (isset(self::$startfile[$a_id])) {
126 $start_file = self::$startfile[$a_id];
127 } else {
128 $q = "SELECT startfile FROM file_based_lm WHERE id = " . $ilDB->quote($a_id, "integer");
129 $set = $ilDB->query($q);
130 $rec = $ilDB->fetchAssoc($set);
131 $start_file = $rec["startfile"];
132 self::$startfile[$a_id] = $start_file . "";
133 }
134
135 $dir = ilUtil::getWebspaceDir() . "/lm_data/lm_" . $a_id;
136
137 if (($start_file != "") &&
138 (@is_file($dir . "/" . $start_file))) {
139 return "./" . $dir . "/" . $start_file;
140 } elseif (@is_file($dir . "/index.html")) {
141 return "./" . $dir . "/index.html";
142 } elseif (@is_file($dir . "/index.htm")) {
143 return "./" . $dir . "/index.htm";
144 }
145
146 return "";
147 }
148
152 public static function _checkGoto($a_target)
153 {
154 global $DIC;
155
156 $ilAccess = $DIC->access();
157
158 $t_arr = explode("_", $a_target);
159
160 if ($t_arr[0] != "htlm" || ((int) $t_arr[1]) <= 0) {
161 return false;
162 }
163
164 if ($ilAccess->checkAccess("visible", "", $t_arr[1]) ||
165 $ilAccess->checkAccess("read", "", $t_arr[1])) {
166 return true;
167 }
168 return false;
169 }
170
176 public static function _lookupDiskUsage($a_id)
177 {
178 $lm_data_dir = ilUtil::getWebspaceDir('filesystem') . "/lm_data";
179 $lm_dir = $lm_data_dir . DIRECTORY_SEPARATOR . "lm_" . $a_id;
180
181 return file_exists($lm_dir) ? ilUtil::dirsize($lm_dir) : 0;
182 }
183
184
190 public static function _preloadData($a_obj_ids, $a_ref_ids)
191 {
192 global $DIC;
193
194 $ilDB = $DIC->database();
195
196 $q = "SELECT id, startfile FROM file_based_lm WHERE " .
197 $ilDB->in("id", $a_obj_ids, false, "integer");
198
199 $lm_set = $ilDB->query($q);
200 while ($rec = $ilDB->fetchAssoc($lm_set)) {
201 self::$startfile[$rec["id"]] = $rec["startfile"] . "";
202 }
203 }
204}
user()
Definition: user.php:4
An exception for terminatinating execution or to throw for unit testing.
const IL_NO_OBJECT_ACCESS
Class ilFileBasedLMAccess.
_checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id="")
checks wether a user may invoke a command or not (this method is called by ilAccessHandler::checkAcce...
static _preloadData($a_obj_ids, $a_ref_ids)
Preload data.
static _checkGoto($a_target)
check whether goto script will succeed
static _determineStartUrl($a_id)
determine start url
static _lookupDiskUsage($a_id)
Returns the number of bytes used on the harddisk by the learning module with the specified object id.
Class ilObjectAccess.
static getWebspaceDir($mode="filesystem")
get webspace directory
static dirsize($directory)
get size of a directory or a file.
global $ilDB
$lm_set
$ilUser
Definition: imgupload.php:18
$DIC
Definition: xapitoken.php:46