1
|
|
|
<?php |
2
|
|
|
/* For licensing terms, see /license.txt */ |
3
|
|
|
|
4
|
|
|
class CcBase |
5
|
|
|
{ |
6
|
|
|
public const CC_TYPE_FORUM = 'imsdt_xmlv1p3'; |
7
|
|
|
public const CC_TYPE_QUIZ = 'imsqti_xmlv1p3/imscc_xmlv1p3/assessment'; |
8
|
|
|
public const CC_TYPE_QUESTION_BANK = 'imsqti_xmlv1p3/imscc_xmlv1p3/question-bank'; |
9
|
|
|
public const CC_TYPE_WEBLINK = 'imswl_xmlv1p3'; |
10
|
|
|
public const CC_TYPE_WEBCONTENT = 'webcontent'; |
11
|
|
|
public const CC_TYPE_ASSOCIATED_CONTENT = 'associatedcontent/imscc_xmlv1p3/learning-application-resource'; |
12
|
|
|
public const CC_TYPE_EMPTY = ''; |
13
|
|
|
|
14
|
|
|
public static $restypes = ['associatedcontent/imscc_xmlv1p0/learning-application-resource', 'webcontent']; |
15
|
|
|
public static $forumns = ['dt' => 'http://www.imsglobal.org/xsd/imsdt_v1p0']; |
16
|
|
|
public static $quizns = ['xmlns' => 'http://www.imsglobal.org/xsd/ims_qtiasiv1p2']; |
17
|
|
|
public static $resourcens = ['wl' => 'http://www.imsglobal.org/xsd/imswl_v1p0']; |
18
|
|
|
|
19
|
|
|
public static $instances = []; |
20
|
|
|
public static $manifest; |
21
|
|
|
public static $pathToManifestFolder; |
22
|
|
|
|
23
|
|
|
public static $namespaces = ['imscc' => 'http://www.imsglobal.org/xsd/imscc/imscp_v1p1', |
24
|
|
|
'lomimscc' => 'http://ltsc.ieee.org/xsd/imscc/LOM', |
25
|
|
|
'lom' => 'http://ltsc.ieee.org/xsd/LOM', |
26
|
|
|
'voc' => 'http://ltsc.ieee.org/xsd/LOM/vocab', |
27
|
|
|
'xsi' => 'http://www.w3.org/2001/XMLSchema-instance', |
28
|
|
|
'cc' => 'http://www.imsglobal.org/xsd/imsccauth_v1p0', ]; |
29
|
|
|
|
30
|
|
|
public function __construct($path_to_manifest) |
31
|
|
|
{ |
32
|
|
|
static::$manifest = new DOMDocument(); |
33
|
|
|
static::$manifest->validateOnParse = false; |
34
|
|
|
|
35
|
|
|
static::$pathToManifestFolder = dirname($path_to_manifest); |
36
|
|
|
|
37
|
|
|
static::logAction('Proccess start'); |
38
|
|
|
static::logAction('Load the manifest file: '.$path_to_manifest); |
39
|
|
|
|
40
|
|
|
if (!static::$manifest->load($path_to_manifest, LIBXML_NONET)) { |
41
|
|
|
static::logAction('Cannot load the manifest file: '.$path_to_manifest, true); |
42
|
|
|
} |
43
|
|
|
} |
44
|
|
|
|
45
|
|
|
/** |
46
|
|
|
* @return array |
47
|
|
|
*/ |
48
|
|
|
public static function getquizns() |
49
|
|
|
{ |
50
|
|
|
return static::$quizns; |
51
|
|
|
} |
52
|
|
|
|
53
|
|
|
/** |
54
|
|
|
* @return array |
55
|
|
|
*/ |
56
|
|
|
public static function getforumns() |
57
|
|
|
{ |
58
|
|
|
return static::$forumns; |
59
|
|
|
} |
60
|
|
|
|
61
|
|
|
/** |
62
|
|
|
* @return array |
63
|
|
|
*/ |
64
|
|
|
public static function getresourcens() |
65
|
|
|
{ |
66
|
|
|
return static::$resourcens; |
67
|
|
|
} |
68
|
|
|
|
69
|
|
|
/** |
70
|
|
|
* Find the imsmanifest.xml file inside the given folder and return its path |
71
|
|
|
* @param string $folder Full path name of the folder in which we expect to find imsmanifest.xml |
72
|
|
|
* @return false|string |
73
|
|
|
*/ |
74
|
|
|
public static function getManifest(string $folder) |
75
|
|
|
{ |
76
|
|
|
if (!is_dir($folder)) { |
77
|
|
|
return false; |
78
|
|
|
} |
79
|
|
|
|
80
|
|
|
// Before iterate over directories, try to find one manifest at top level |
81
|
|
|
if (file_exists($folder.'/imsmanifest.xml')) { |
82
|
|
|
return $folder.'/imsmanifest.xml'; |
83
|
|
|
} |
84
|
|
|
|
85
|
|
|
$result = false; |
86
|
|
|
try { |
87
|
|
|
$dirIter = new RecursiveDirectoryIterator($folder, RecursiveDirectoryIterator::KEY_AS_PATHNAME); |
88
|
|
|
$recIter = new RecursiveIteratorIterator($dirIter, RecursiveIteratorIterator::CHILD_FIRST); |
89
|
|
|
foreach ($recIter as $info) { |
90
|
|
|
if ($info->isFile() && ($info->getFilename() == 'imsmanifest.xml')) { |
91
|
|
|
$result = $info->getPathname(); |
92
|
|
|
break; |
93
|
|
|
} |
94
|
|
|
} |
95
|
|
|
} catch (Exception $e) { |
|
|
|
|
96
|
|
|
} |
97
|
|
|
|
98
|
|
|
return $result; |
99
|
|
|
} |
100
|
|
|
|
101
|
|
|
public function isAuth() |
102
|
|
|
{ |
103
|
|
|
$xpath = static::newxPath(static::$manifest, static::$namespaces); |
104
|
|
|
|
105
|
|
|
$count_auth = $xpath->evaluate('count(/imscc:manifest/cc:authorizations)'); |
106
|
|
|
|
107
|
|
|
if ($count_auth > 0) { |
108
|
|
|
$response = true; |
109
|
|
|
} else { |
110
|
|
|
$response = false; |
111
|
|
|
} |
112
|
|
|
|
113
|
|
|
return $response; |
114
|
|
|
} |
115
|
|
|
|
116
|
|
|
public function getNodesByCriteria($key, $value) |
117
|
|
|
{ |
118
|
|
|
$response = []; |
119
|
|
|
|
120
|
|
|
if (array_key_exists('index', static::$instances)) { |
121
|
|
|
foreach (static::$instances['index'] as $item) { |
122
|
|
|
if ($item[$key] == $value) { |
123
|
|
|
$response[] = $item; |
124
|
|
|
} |
125
|
|
|
} |
126
|
|
|
} |
127
|
|
|
|
128
|
|
|
return $response; |
129
|
|
|
} |
130
|
|
|
|
131
|
|
|
public function countInstances($type) |
132
|
|
|
{ |
133
|
|
|
$quantity = 0; |
134
|
|
|
|
135
|
|
|
if (array_key_exists('index', static::$instances)) { |
136
|
|
|
if (static::$instances['index'] && $type) { |
137
|
|
|
foreach (static::$instances['index'] as $instance) { |
138
|
|
|
if (!empty($instance['tool_type'])) { |
139
|
|
|
$types[] = $instance['tool_type']; |
140
|
|
|
} |
141
|
|
|
} |
142
|
|
|
|
143
|
|
|
$quantityInstances = array_count_values($types); |
|
|
|
|
144
|
|
|
$quantity = array_key_exists($type, $quantityInstances) ? $quantityInstances[$type] : 0; |
145
|
|
|
} |
146
|
|
|
} |
147
|
|
|
|
148
|
|
|
return $quantity; |
149
|
|
|
} |
150
|
|
|
|
151
|
|
|
public function getItemCcType($identifier) |
152
|
|
|
{ |
153
|
|
|
$xpath = static::newxPath(static::$manifest, static::$namespaces); |
154
|
|
|
|
155
|
|
|
$nodes = $xpath->query('/imscc:manifest/imscc:resources/imscc:resource[@identifier="'.$identifier.'"]/@type'); |
156
|
|
|
|
157
|
|
|
if ($nodes && !empty($nodes->item(0)->nodeValue)) { |
158
|
|
|
return $nodes->item(0)->nodeValue; |
159
|
|
|
} else { |
160
|
|
|
return ''; |
161
|
|
|
} |
162
|
|
|
} |
163
|
|
|
|
164
|
|
|
public function getItemHref($identifier) |
165
|
|
|
{ |
166
|
|
|
$xpath = static::newxPath(static::$manifest, static::$namespaces); |
167
|
|
|
|
168
|
|
|
$nodes = $xpath->query('/imscc:manifest/imscc:resources/imscc:resource[@identifier="'.$identifier.'"]/imscc:file/@href'); |
169
|
|
|
|
170
|
|
|
if ($nodes && !empty($nodes->item(0)->nodeValue)) { |
171
|
|
|
return $nodes->item(0)->nodeValue; |
172
|
|
|
} else { |
173
|
|
|
return ''; |
174
|
|
|
} |
175
|
|
|
} |
176
|
|
|
|
177
|
|
|
public static function newxPath(DOMDocument $manifest, $namespaces = '') |
178
|
|
|
{ |
179
|
|
|
$xpath = new DOMXPath($manifest); |
180
|
|
|
|
181
|
|
|
if (!empty($namespaces)) { |
182
|
|
|
foreach ($namespaces as $prefix => $ns) { |
183
|
|
|
if (!$xpath->registerNamespace($prefix, $ns)) { |
184
|
|
|
static::logAction('Cannot register the namespace: '.$prefix.':'.$ns, true); |
185
|
|
|
} |
186
|
|
|
} |
187
|
|
|
} |
188
|
|
|
|
189
|
|
|
return $xpath; |
190
|
|
|
} |
191
|
|
|
|
192
|
|
|
public static function logFile() |
193
|
|
|
{ |
194
|
|
|
return static::$pathToManifestFolder.DIRECTORY_SEPARATOR.'cc_import.log'; |
195
|
|
|
} |
196
|
|
|
|
197
|
|
|
public static function logAction($text, $criticalError = false) |
198
|
|
|
{ |
199
|
|
|
$full_message = strtoupper(date("j/n/Y g:i:s a"))." - ".$text."\r"; |
200
|
|
|
|
201
|
|
|
file_put_contents(static::logFile(), $full_message, FILE_APPEND); |
202
|
|
|
|
203
|
|
|
if ($criticalError) { |
204
|
|
|
static::criticalError($text); |
205
|
|
|
} |
206
|
|
|
} |
207
|
|
|
|
208
|
|
|
public function convertToToolType($ccType) |
209
|
|
|
{ |
210
|
|
|
$type = TYPE_UNKNOWN; |
211
|
|
|
|
212
|
|
|
if ($ccType == static::CC_TYPE_FORUM) { |
213
|
|
|
$type = TOOL_TYPE_FORUM; |
214
|
|
|
} |
215
|
|
|
|
216
|
|
|
if ($ccType == static::CC_TYPE_QUIZ) { |
217
|
|
|
$type = TOOL_TYPE_QUIZ; |
218
|
|
|
} |
219
|
|
|
|
220
|
|
|
if ($ccType == static::CC_TYPE_WEBLINK) { |
221
|
|
|
$type = TOOL_TYPE_WEBLINK; |
222
|
|
|
} |
223
|
|
|
|
224
|
|
|
if ($ccType == static::CC_TYPE_WEBCONTENT) { |
225
|
|
|
$type = TOOL_TYPE_DOCUMENT; |
226
|
|
|
} |
227
|
|
|
|
228
|
|
|
return $type; |
229
|
|
|
} |
230
|
|
|
|
231
|
|
|
protected function getMetadata($section, $key) |
232
|
|
|
{ |
233
|
|
|
$xpath = static::newxPath(static::$manifest, static::$namespaces); |
234
|
|
|
|
235
|
|
|
$metadata = $xpath->query('/imscc:manifest/imscc:metadata/lomimscc:lom/lomimscc:'.$section.'/lomimscc:'.$key.'/lomimscc:string'); |
236
|
|
|
$value = !empty($metadata->item(0)->nodeValue) ? $metadata->item(0)->nodeValue : ''; |
237
|
|
|
|
238
|
|
|
return $value; |
239
|
|
|
} |
240
|
|
|
|
241
|
|
|
/** |
242
|
|
|
* Is activity visible or not. |
243
|
|
|
* |
244
|
|
|
* @param string $identifier |
245
|
|
|
* |
246
|
|
|
* @return number |
247
|
|
|
*/ |
248
|
|
|
protected function getModuleVisible($identifier) |
249
|
|
|
{ |
250
|
|
|
//Should item be hidden or not |
251
|
|
|
$mod_visible = 1; |
252
|
|
|
if (!empty($identifier)) { |
253
|
|
|
$xpath = static::newxPath(static::$manifest, static::$namespaces); |
254
|
|
|
$query = '/imscc:manifest/imscc:resources/imscc:resource[@identifier="'.$identifier.'"]'; |
255
|
|
|
$query .= '//lom:intendedEndUserRole/voc:vocabulary/lom:value'; |
256
|
|
|
$intendeduserrole = $xpath->query($query); |
257
|
|
|
if (!empty($intendeduserrole) && ($intendeduserrole->length > 0)) { |
258
|
|
|
$role = trim($intendeduserrole->item(0)->nodeValue); |
259
|
|
|
if (strcasecmp('Instructor', $role) == 0) { |
260
|
|
|
$mod_visible = 0; |
261
|
|
|
} |
262
|
|
|
} |
263
|
|
|
} |
264
|
|
|
|
265
|
|
|
return $mod_visible; |
266
|
|
|
} |
267
|
|
|
|
268
|
|
|
protected function createInstances($items, $level = 0, &$array_index = 0, $index_root = 0) |
269
|
|
|
{ |
270
|
|
|
$level++; |
271
|
|
|
$i = 1; |
272
|
|
|
|
273
|
|
|
if ($items) { |
274
|
|
|
$xpath = self::newxPath(static::$manifest, static::$namespaces); |
275
|
|
|
|
276
|
|
|
foreach ($items as $item) { |
277
|
|
|
$array_index++; |
278
|
|
|
$title = $path = $tool_type = $identifierref = ''; |
279
|
|
|
if ($item->nodeName == 'item') { |
280
|
|
|
if ($item->hasAttribute('identifierref')) { |
281
|
|
|
$identifierref = $item->getAttribute('identifierref'); |
282
|
|
|
} |
283
|
|
|
|
284
|
|
|
$titles = $xpath->query('imscc:title', $item); |
285
|
|
|
if ($titles->length > 0) { |
286
|
|
|
$title = $titles->item(0)->nodeValue; |
287
|
|
|
} |
288
|
|
|
|
289
|
|
|
$ccType = $this->getItemCcType($identifierref); |
290
|
|
|
$tool_type = $this->convertToToolType($ccType); |
291
|
|
|
//Fix the label issue - MDL-33523 |
292
|
|
|
if (empty($identifierref) && empty($title)) { |
293
|
|
|
$tool_type = TYPE_UNKNOWN; |
294
|
|
|
} |
295
|
|
|
} elseif ($item->nodeName == 'resource') { |
296
|
|
|
$identifierref = $xpath->query('@identifier', $item); |
297
|
|
|
$identifierref = !empty($identifierref->item(0)->nodeValue) ? $identifierref->item(0)->nodeValue : ''; |
298
|
|
|
|
299
|
|
|
$ccType = $this->getItemCcType($identifierref); |
300
|
|
|
$tool_type = $this->convertToToolType($ccType); |
301
|
|
|
if (self::CC_TYPE_WEBCONTENT == $ccType) { |
302
|
|
|
$path = $this->getItemHref($identifierref); |
303
|
|
|
$title = basename($path); |
304
|
|
|
} else { // A resource but not a file... we assume it's a quiz bank and its assigned identifier is irrelevant to its name |
305
|
|
|
$title = 'Quiz Bank '.($this->countInstances($tool_type) + 1); |
306
|
|
|
} |
307
|
|
|
} |
308
|
|
|
|
309
|
|
|
if ($level == ROOT_DEEP) { |
310
|
|
|
$index_root = $array_index; |
311
|
|
|
} |
312
|
|
|
|
313
|
|
|
static::$instances['index'][$array_index] = [ |
314
|
|
|
'common_cartridge_type' => $ccType, |
|
|
|
|
315
|
|
|
'tool_type' => $tool_type, |
316
|
|
|
'title' => $title ? $title : '', |
317
|
|
|
'root_parent' => $index_root, |
318
|
|
|
'index' => $array_index, |
319
|
|
|
'deep' => $level, |
320
|
|
|
'instance' => $this->countInstances($tool_type), |
321
|
|
|
'resource_identifier' => $identifierref, |
322
|
|
|
]; |
323
|
|
|
|
324
|
|
|
static::$instances['instances'][$tool_type][] = [ |
325
|
|
|
'title' => $title, |
326
|
|
|
'instance' => static::$instances['index'][$array_index]['instance'], |
327
|
|
|
'common_cartridge_type' => $ccType, |
328
|
|
|
'resource_identifier' => $identifierref, |
329
|
|
|
'deep' => $level, |
330
|
|
|
'src' => $path, |
331
|
|
|
]; |
332
|
|
|
|
333
|
|
|
$more_items = $xpath->query('imscc:item', $item); |
334
|
|
|
|
335
|
|
|
if ($more_items->length > 0) { |
336
|
|
|
$this->createInstances($more_items, $level, $array_index, $index_root); |
337
|
|
|
} |
338
|
|
|
|
339
|
|
|
$i++; |
340
|
|
|
} |
341
|
|
|
} |
342
|
|
|
} |
343
|
|
|
|
344
|
|
|
protected static function criticalError($text) |
345
|
|
|
{ |
346
|
|
|
$path_to_log = static::logFile(); |
347
|
|
|
|
348
|
|
|
echo ' |
349
|
|
|
|
350
|
|
|
<p> |
351
|
|
|
<hr />A critical error has been found! |
352
|
|
|
|
353
|
|
|
<p>'.$text.'</p> |
354
|
|
|
|
355
|
|
|
|
356
|
|
|
<p> |
357
|
|
|
The process has been stopped. Please see the <a href="'.$path_to_log.'">log file</a> for more information.</p> |
358
|
|
|
|
359
|
|
|
<p>Log: '.$path_to_log.'</p> |
360
|
|
|
|
361
|
|
|
<hr /> |
362
|
|
|
|
363
|
|
|
</p> |
364
|
|
|
'; |
365
|
|
|
|
366
|
|
|
exit(); |
|
|
|
|
367
|
|
|
} |
368
|
|
|
|
369
|
|
|
protected function createCourseCode($title) |
370
|
|
|
{ |
371
|
|
|
//Making sure that text of the short name does not go over the DB limit. |
372
|
|
|
//and leaving the space to add additional characters by the platform |
373
|
|
|
$code = substr(strtoupper(str_replace(' ', '', trim($title))), 0, 94); |
374
|
|
|
|
375
|
|
|
return $code; |
376
|
|
|
} |
377
|
|
|
} |
378
|
|
|
|