599f38f9 |
1 | <?php //$Id$ |
2 | |
4c8c65ec |
3 | define('BYTESERVING_BOUNDARY', 's1k2o3d4a5k6s7'); //unique string constant |
4 | |
172dd12c |
5 | require_once("$CFG->libdir/file/file_exceptions.php"); |
6 | require_once("$CFG->libdir/file/file_storage.php"); |
7 | require_once("$CFG->libdir/file/file_browser.php"); |
0b0bfa93 |
8 | |
9 | require_once("$CFG->libdir/packer/zip_packer.php"); |
172dd12c |
10 | |
74369ab5 |
11 | function get_file_url($path, $options=null, $type='coursefile') { |
12 | global $CFG; |
13 | |
172dd12c |
14 | $path = str_replace('//', '/', $path); |
74369ab5 |
15 | $path = trim($path, '/'); // no leading and trailing slashes |
16 | |
17 | // type of file |
18 | switch ($type) { |
5a254a29 |
19 | case 'questionfile': |
20 | $url = $CFG->wwwroot."/question/exportfile.php"; |
21 | break; |
22 | case 'rssfile': |
23 | $url = $CFG->wwwroot."/rss/file.php"; |
24 | break; |
25 | case 'user': |
26 | $url = $CFG->wwwroot."/user/pix.php"; |
27 | break; |
28 | case 'usergroup': |
29 | $url = $CFG->wwwroot."/user/pixgroup.php"; |
30 | break; |
31 | case 'httpscoursefile': |
32 | $url = $CFG->httpswwwroot."/file.php"; |
33 | break; |
34 | case 'coursefile': |
74369ab5 |
35 | default: |
5a254a29 |
36 | $url = $CFG->wwwroot."/file.php"; |
74369ab5 |
37 | } |
38 | |
39 | if ($CFG->slasharguments) { |
40 | $parts = explode('/', $path); |
5e19ea32 |
41 | $parts = array_map('rawurlencode', $parts); |
74369ab5 |
42 | $path = implode('/', $parts); |
5a254a29 |
43 | $ffurl = $url.'/'.$path; |
74369ab5 |
44 | $separator = '?'; |
45 | } else { |
5a254a29 |
46 | $path = rawurlencode('/'.$path); |
47 | $ffurl = $url.'?file='.$path; |
74369ab5 |
48 | $separator = '&'; |
49 | } |
50 | |
51 | if ($options) { |
52 | foreach ($options as $name=>$value) { |
53 | $ffurl = $ffurl.$separator.$name.'='.$value; |
54 | $separator = '&'; |
55 | } |
56 | } |
57 | |
58 | return $ffurl; |
59 | } |
60 | |
8546def3 |
61 | /** |
62 | * Returns empty user upload draft area information |
b933a139 |
63 | * @return int draftareaid |
8546def3 |
64 | */ |
b933a139 |
65 | function file_get_new_draftitemid() { |
8546def3 |
66 | global $DB, $USER; |
67 | |
68 | if (isguestuser() or !isloggedin()) { |
b933a139 |
69 | // guests and not-logged-in users can not be allowed to upload anything! |
8546def3 |
70 | print_error('noguest'); |
71 | } |
72 | |
73 | $contextid = get_context_instance(CONTEXT_USER, $USER->id)->id; |
74 | $filearea = 'user_draft'; |
75 | |
76 | $fs = get_file_storage(); |
77 | $draftitemid = rand(1, 999999999); |
78 | while ($files = $fs->get_area_files($contextid, $filearea, $draftitemid)) { |
79 | $draftitemid = rand(1, 999999999); |
80 | } |
81 | |
b933a139 |
82 | return $draftitemid; |
8546def3 |
83 | } |
84 | |
7983d682 |
85 | /** |
b933a139 |
86 | * Creates new draft area if not exists yet and copies files there |
87 | * @param int &$draftitemid |
7983d682 |
88 | * @param int $contextid |
89 | * @param string $filearea |
90 | * @param int $itemid |
8546def3 |
91 | * @param string $text usually html text with embedded links to draft area |
b933a139 |
92 | * @param boolean $forcehttps force https |
7983d682 |
93 | * @return string text with relative links starting with @@PLUGINFILE@@ |
94 | */ |
b933a139 |
95 | function file_prepare_draftarea(&$draftitemid, $contextid, $filearea, $itemid, $text=null, $forcehttps=false) { |
7983d682 |
96 | global $CFG, $USER; |
97 | |
8546def3 |
98 | $usercontext = get_context_instance(CONTEXT_USER, $USER->id); |
b933a139 |
99 | $fs = get_file_storage(); |
100 | |
101 | if (empty($draftitemid)) { |
102 | // create a new area and copy existing files into |
103 | $draftitemid = file_get_new_draftitemid(); |
104 | $file_record = array('contextid'=>$usercontext->id, 'filearea'=>'user_draft', 'itemid'=>$draftitemid); |
105 | if ($files = $fs->get_area_files($contextid, $filearea, $itemid)) { |
106 | foreach ($files as $file) { |
107 | $fs->create_file_from_storedfile($file_record, $file); |
108 | } |
109 | } |
110 | } else { |
111 | // nothing to do |
112 | } |
113 | |
114 | if (is_null($text)) { |
115 | return null; |
116 | } |
117 | |
118 | /// relink embedded files - editor can not handle @@PLUGINFILE@@ ! |
119 | |
120 | if ($CFG->slasharguments) { |
121 | $draftbase = "$CFG->wwwroot/draftfile.php/user_draft/$draftitemid/"; |
122 | } else { |
123 | $draftbase = "$CFG->wwwroot/draftfile.php?file=/user_draft/$draftitemid/"; |
124 | } |
8546def3 |
125 | |
b933a139 |
126 | if ($forcehttps) { |
127 | $draftbase = str_replace('http://', 'https://', $draftbase); |
128 | } |
129 | |
130 | $text = str_replace('@@PLUGINFILE@@/', $draftbase); |
131 | |
132 | return $text; |
133 | } |
134 | |
135 | /** |
136 | * Converts absolute links in text and merges draft files to target area. |
137 | * @param int $draftitemid |
138 | * @param int $contextid |
139 | * @param string $filearea |
140 | * @param int $itemid |
141 | * @param string $text usually html text with embedded links to draft area |
142 | * @param boolean $forcehttps force https |
143 | * @return string text with relative links starting with @@PLUGINFILE@@ |
144 | */ |
145 | function file_convert_draftarea($draftitemid, $contextid, $filearea, $itemid, $text=null, $forcehttps=false) { |
146 | global $CFG, $USER; |
147 | |
148 | $usercontext = get_context_instance(CONTEXT_USER, $USER->id); |
8546def3 |
149 | $fs = get_file_storage(); |
b933a139 |
150 | |
151 | $draftfiles = $fs->get_area_files($usercontext->id, 'user_draft', $draftitemid, 'id'); |
152 | $oldfiles = $fs->get_area_files($contextid, $filearea, $itemid, 'id'); |
153 | |
154 | if (count($draftfiles) < 2) { |
155 | // means there are no files - one file means root dir only ;-) |
156 | $fs->delete_area_files($contextid, $filearea, $itemid); |
157 | |
158 | } else if (count($oldfiles) < 2) { |
159 | // there were no files before - one file means root dir only ;-) |
160 | $fs->delete_area_files($contextid, $filearea, $itemid); |
8546def3 |
161 | $file_record = array('contextid'=>$contextid, 'filearea'=>$filearea, 'itemid'=>$itemid); |
b933a139 |
162 | foreach ($draftfiles as $file) { |
163 | $fs->create_file_from_storedfile($file_record, $file); |
164 | } |
165 | |
166 | } else { |
167 | // we have to merge old and new files - we want to keep file ids for files that were not changed |
168 | $file_record = array('contextid'=>$contextid, 'filearea'=>$filearea, 'itemid'=>$itemid); |
169 | foreach ($draftfiles as $file) { |
170 | $newhash = sha1($contextid.$filearea.$itemid.$file->get_filepath().$file->get_filename()); |
171 | if (isset($oldfiles[$newhash])) { |
172 | $oldfile = $oldfiles[$newhash]; |
173 | unset($oldfiles[$newhash]); // do not delete afterwards |
174 | |
175 | if (!$file->is_directory()) { |
176 | if ($file->get_contenthash() === $oldfile->get_contenthash()) { |
177 | // file was not changed at all |
178 | continue; |
179 | } else { |
180 | // file changed, delete the original |
181 | $oldfile->delete(); |
182 | } |
183 | } |
184 | } |
185 | $fs->create_file_from_storedfile($file_record, $file); |
186 | } |
187 | // cleanup deleted files and dirs |
188 | foreach ($oldfiles as $file) { |
8546def3 |
189 | $file->delete(); |
190 | } |
191 | } |
192 | |
b933a139 |
193 | // purge the draft area |
194 | $fs->delete_area_files($usercontext->id, 'user_draft', $draftitemid); |
195 | |
8546def3 |
196 | if (is_null($text)) { |
197 | return null; |
198 | } |
199 | |
b933a139 |
200 | /// relink embedded files if text submitted - no absolute links allowed in database! |
8546def3 |
201 | |
7983d682 |
202 | if ($CFG->slasharguments) { |
203 | $draftbase = "$CFG->wwwroot/draftfile.php/user_draft/$draftitemid/"; |
204 | } else { |
205 | $draftbase = "$CFG->wwwroot/draftfile.php?file=/user_draft/$draftitemid/"; |
206 | } |
207 | |
b933a139 |
208 | if ($forcehttps) { |
7983d682 |
209 | $draftbase = str_replace('http://', 'https://', $draftbase); |
210 | } |
211 | |
7983d682 |
212 | $text = str_ireplace($draftbase, '@@PLUGINFILE@@/'); |
213 | |
7983d682 |
214 | return $text; |
215 | } |
216 | |
22aa775a |
217 | /** |
b933a139 |
218 | * Finds occurences of a link to "draftfile.php" in text and replaces the |
219 | * address based on passed information. Matching is performed using the given |
220 | * current itemid, contextid and filearea and $CFG->wwwroot. This function |
221 | * replaces all the urls for one file. If more than one files were sent, it |
22aa775a |
222 | * must be called once for each file. |
223 | * |
224 | * @uses $CFG |
927ce887 |
225 | * @see file_storage::move_draft_to_final() |
22aa775a |
226 | * |
227 | * @param $text string text to modify |
237806f4 |
228 | * @param $contextid int context that the files should be assigned to |
229 | * @param $filepath string filepath under which the files should be saved |
230 | * @param $filearea string filearea into which the files should be saved |
231 | * @param $itemid int the itemid to assign to the files |
232 | * @param $currentcontextid int the current contextid of the files |
233 | * @param $currentfilearea string the current filearea of the files (defaults |
22aa775a |
234 | * to "user_draft") |
235 | * @return string modified $text, or null if an error occured. |
236 | */ |
98bc6446 |
237 | function file_rewrite_urls($text, $contextid, $filepath, $filearea, $itemid, $currentcontextid, $currentfilearea = 'user_draft') { |
22aa775a |
238 | global $CFG; |
239 | |
927ce887 |
240 | $context = get_context_instance_by_id($contextid); |
237806f4 |
241 | $currentcontext = get_context_instance_by_id($currentcontextid); |
927ce887 |
242 | $fs = get_file_storage(); |
22aa775a |
243 | |
78c809c4 |
244 | //Make sure this won't match wrong stuff, as much as possible (can probably be improved) |
245 | // * using $currentcontextid in here ensures that we're only matching files belonging to current user |
246 | // * placeholders: {wwwroot}/draftfile.php/{currentcontextid}/{currentfilearea}/{itemid}{/filepath}/{filename} |
247 | // * filepath is optional, everything else is guaranteed to be there. |
98bc6446 |
248 | $re = '|'. preg_quote($CFG->wwwroot) .'/draftfile.php/'. $currentcontextid .'/'. $currentfilearea .'/([0-9]+)(/[A-Fa-f0-9]+)?/([^\'^"^\>]+)|'; |
927ce887 |
249 | $matches = array(); |
250 | if (!preg_match_all($re, $text, $matches, PREG_SET_ORDER)) { |
98bc6446 |
251 | return $text; // no draftfile url in text, no replacement necessary. |
927ce887 |
252 | } |
253 | |
98bc6446 |
254 | $replacedfiles = array(); |
927ce887 |
255 | foreach($matches as $file) { |
98bc6446 |
256 | |
237806f4 |
257 | $currenturl = $file[0]; |
258 | $currentitemid = $file[1]; |
98bc6446 |
259 | if (!empty($file[2])) { |
260 | $currentfilepath = $file[2]; |
261 | } |
262 | $currentfilepath .= '/'; |
263 | $currentfilename = $file[3]; |
264 | |
78c809c4 |
265 | // if a new upload has the same file path/name as an existing file, but different content, we put it in a distinct path. |
266 | $existingfile = $fs->get_file($currentcontextid, $currentfilearea, $currentitemid, $currentfilepath, $currentfilename); |
267 | $uploadedfile = $fs->get_file($contextid, $filearea, $itemid, $filepath, $currentfilename); |
eb37800b |
268 | if ($existingfile && $uploadedfile && ($existingfile->get_contenthash() != $uploadedfile->get_contenthash())) { |
78c809c4 |
269 | $filepath .= $currentitemid .'/'; |
98bc6446 |
270 | } |
237806f4 |
271 | |
98bc6446 |
272 | if ($newfiles = $fs->move_draft_to_final($currentitemid, $contextid, $filearea, $itemid, $filepath, false)) { |
927ce887 |
273 | foreach($newfiles as $newfile) { |
98bc6446 |
274 | if (in_array($newfile, $replacedfiles)) { |
275 | // if a file is being used more than once, all occurences will be replaced the first time, so ignore it when it comes back. |
276 | // ..it wouldn't be in user_draft anymore anyway! |
277 | continue; |
278 | } |
279 | $replacedfiles[] = $newfile; |
237806f4 |
280 | if ($context->contextlevel == CONTEXT_USER) { |
98bc6446 |
281 | $newurl = $CFG->wwwroot .'/userfile.php/'. $contextid .'/'. $filearea . $newfile->get_filepath() . $newfile->get_filename(); |
927ce887 |
282 | } else { |
283 | $newurl = $CFG->wwwroot .'/pluginfile.php/'. $contextid .'/'. $filearea .'/'. $itemid . $newfile->get_filepath() . $newfile->get_filename(); |
284 | } |
98bc6446 |
285 | $text = str_replace('"'. $currenturl .'"', '"'. $newurl .'"', $text); |
927ce887 |
286 | } |
287 | } // else file not found, wrong file, or string is just not a file so we leave it alone. |
b933a139 |
288 | |
927ce887 |
289 | } |
290 | return $text; |
22aa775a |
291 | } |
292 | |
8ee88311 |
293 | /** |
5f8bdc17 |
294 | * Fetches content of file from Internet (using proxy if defined). Uses cURL extension if present. |
599f06cf |
295 | * Due to security concerns only downloads from http(s) sources are supported. |
296 | * |
297 | * @param string $url file url starting with http(s):// |
5ef082df |
298 | * @param array $headers http headers, null if none. If set, should be an |
299 | * associative array of header name => value pairs. |
6bf55889 |
300 | * @param array $postdata array means use POST request with given parameters |
301 | * @param bool $fullresponse return headers, responses, etc in a similar way snoopy does |
5ef082df |
302 | * (if false, just returns content) |
303 | * @param int $timeout timeout for complete download process including all file transfer |
44e02d79 |
304 | * (default 5 minutes) |
305 | * @param int $connecttimeout timeout for connection to server; this is the timeout that |
306 | * usually happens if the remote server is completely down (default 20 seconds); |
307 | * may not work when using proxy |
83947a36 |
308 | * @param bool $skipcertverify If true, the peer's SSL certificate will not be checked. Only use this when already in a trusted location. |
8ee88311 |
309 | * @return mixed false if request failed or content of the file as string if ok. |
310 | */ |
83947a36 |
311 | function download_file_content($url, $headers=null, $postdata=null, $fullresponse=false, $timeout=300, $connecttimeout=20, $skipcertverify=false) { |
e27f0765 |
312 | global $CFG; |
313 | |
599f06cf |
314 | // some extra security |
315 | $newlines = array("\r", "\n"); |
316 | if (is_array($headers) ) { |
317 | foreach ($headers as $key => $value) { |
318 | $headers[$key] = str_replace($newlines, '', $value); |
319 | } |
320 | } |
321 | $url = str_replace($newlines, '', $url); |
322 | if (!preg_match('|^https?://|i', $url)) { |
323 | if ($fullresponse) { |
324 | $response = new object(); |
325 | $response->status = 0; |
326 | $response->headers = array(); |
327 | $response->response_code = 'Invalid protocol specified in url'; |
328 | $response->results = ''; |
329 | $response->error = 'Invalid protocol specified in url'; |
330 | return $response; |
331 | } else { |
332 | return false; |
333 | } |
334 | } |
335 | |
bb2c046d |
336 | // check if proxy (if used) should be bypassed for this url |
15c31560 |
337 | $proxybypass = is_proxybypass( $url ); |
599f06cf |
338 | |
6bf55889 |
339 | if (!extension_loaded('curl') or ($ch = curl_init($url)) === false) { |
5f8bdc17 |
340 | require_once($CFG->libdir.'/snoopy/Snoopy.class.inc'); |
341 | $snoopy = new Snoopy(); |
6bf55889 |
342 | $snoopy->read_timeout = $timeout; |
44e02d79 |
343 | $snoopy->_fp_timeout = $connecttimeout; |
15c31560 |
344 | if (!$proxybypass) { |
345 | $snoopy->proxy_host = $CFG->proxyhost; |
346 | $snoopy->proxy_port = $CFG->proxyport; |
347 | if (!empty($CFG->proxyuser) and !empty($CFG->proxypassword)) { |
348 | // this will probably fail, but let's try it anyway |
349 | $snoopy->proxy_user = $CFG->proxyuser; |
350 | $snoopy->proxy_password = $CFG->proxypassword; |
351 | } |
5f8bdc17 |
352 | } |
15c31560 |
353 | |
6bf55889 |
354 | if (is_array($headers) ) { |
355 | $client->rawheaders = $headers; |
356 | } |
357 | |
358 | if (is_array($postdata)) { |
359 | $fetch = @$snoopy->fetch($url, $postdata); // use more specific debug code bellow |
360 | } else { |
361 | $fetch = @$snoopy->fetch($url); // use more specific debug code bellow |
362 | } |
363 | |
364 | if ($fetch) { |
365 | if ($fullresponse) { |
366 | //fix header line endings |
367 | foreach ($snoopy->headers as $key=>$unused) { |
368 | $snoopy->headers[$key] = trim($snoopy->headers[$key]); |
369 | } |
370 | $response = new object(); |
371 | $response->status = $snoopy->status; |
372 | $response->headers = $snoopy->headers; |
373 | $response->response_code = trim($snoopy->response_code); |
374 | $response->results = $snoopy->results; |
375 | $response->error = $snoopy->error; |
376 | return $response; |
377 | |
378 | } else if ($snoopy->status != 200) { |
5f8bdc17 |
379 | debugging("Snoopy request for \"$url\" failed, http response code: ".$snoopy->response_code, DEBUG_ALL); |
380 | return false; |
6bf55889 |
381 | |
5f8bdc17 |
382 | } else { |
383 | return $snoopy->results; |
384 | } |
385 | } else { |
6bf55889 |
386 | if ($fullresponse) { |
387 | $response = new object(); |
388 | $response->status = $snoopy->status; |
389 | $response->headers = array(); |
390 | $response->response_code = $snoopy->response_code; |
391 | $response->results = ''; |
392 | $response->error = $snoopy->error; |
393 | return $response; |
394 | } else { |
395 | debugging("Snoopy request for \"$url\" failed with: ".$snoopy->error, DEBUG_ALL); |
396 | return false; |
397 | } |
398 | } |
399 | } |
400 | |
599f06cf |
401 | // set extra headers |
6bf55889 |
402 | if (is_array($headers) ) { |
403 | $headers2 = array(); |
404 | foreach ($headers as $key => $value) { |
6bf55889 |
405 | $headers2[] = "$key: $value"; |
406 | } |
407 | curl_setopt($ch, CURLOPT_HTTPHEADER, $headers2); |
408 | } |
409 | |
bb2c046d |
410 | |
83947a36 |
411 | if ($skipcertverify) { |
412 | curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); |
413 | } |
bb2c046d |
414 | |
6bf55889 |
415 | // use POST if requested |
416 | if (is_array($postdata)) { |
417 | foreach ($postdata as $k=>$v) { |
418 | $postdata[$k] = urlencode($k).'='.urlencode($v); |
5f8bdc17 |
419 | } |
6bf55889 |
420 | $postdata = implode('&', $postdata); |
421 | curl_setopt($ch, CURLOPT_POST, true); |
422 | curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata); |
5f8bdc17 |
423 | } |
424 | |
8ee88311 |
425 | curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
6bf55889 |
426 | curl_setopt($ch, CURLOPT_HEADER, true); |
44e02d79 |
427 | curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $connecttimeout); |
428 | curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); |
6bf55889 |
429 | if (!ini_get('open_basedir') and !ini_get('safe_mode')) { |
599f06cf |
430 | // TODO: add version test for '7.10.5' |
6bf55889 |
431 | curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); |
432 | curl_setopt($ch, CURLOPT_MAXREDIRS, 5); |
433 | } |
434 | |
15c31560 |
435 | if (!empty($CFG->proxyhost) and !$proxybypass) { |
5f8bdc17 |
436 | // SOCKS supported in PHP5 only |
437 | if (!empty($CFG->proxytype) and ($CFG->proxytype == 'SOCKS5')) { |
438 | if (defined('CURLPROXY_SOCKS5')) { |
439 | curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5); |
440 | } else { |
5f8bdc17 |
441 | curl_close($ch); |
599f06cf |
442 | if ($fullresponse) { |
443 | $response = new object(); |
444 | $response->status = '0'; |
445 | $response->headers = array(); |
446 | $response->response_code = 'SOCKS5 proxy is not supported in PHP4'; |
447 | $response->results = ''; |
448 | $response->error = 'SOCKS5 proxy is not supported in PHP4'; |
449 | return $response; |
450 | } else { |
451 | debugging("SOCKS5 proxy is not supported in PHP4.", DEBUG_ALL); |
452 | return false; |
453 | } |
5f8bdc17 |
454 | } |
455 | } |
456 | |
08ec989f |
457 | curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, false); |
458 | |
8ee88311 |
459 | if (empty($CFG->proxyport)) { |
e27f0765 |
460 | curl_setopt($ch, CURLOPT_PROXY, $CFG->proxyhost); |
8ee88311 |
461 | } else { |
e27f0765 |
462 | curl_setopt($ch, CURLOPT_PROXY, $CFG->proxyhost.':'.$CFG->proxyport); |
8ee88311 |
463 | } |
5f8bdc17 |
464 | |
465 | if (!empty($CFG->proxyuser) and !empty($CFG->proxypassword)) { |
8ee88311 |
466 | curl_setopt($ch, CURLOPT_PROXYUSERPWD, $CFG->proxyuser.':'.$CFG->proxypassword); |
5f8bdc17 |
467 | if (defined('CURLOPT_PROXYAUTH')) { |
468 | // any proxy authentication if PHP 5.1 |
469 | curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC | CURLAUTH_NTLM); |
470 | } |
8ee88311 |
471 | } |
472 | } |
6bf55889 |
473 | |
599f06cf |
474 | $data = curl_exec($ch); |
08ec989f |
475 | |
599f06cf |
476 | // try to detect encoding problems |
6bf55889 |
477 | if ((curl_errno($ch) == 23 or curl_errno($ch) == 61) and defined('CURLOPT_ENCODING')) { |
478 | curl_setopt($ch, CURLOPT_ENCODING, 'none'); |
599f06cf |
479 | $data = curl_exec($ch); |
6bf55889 |
480 | } |
481 | |
08ec989f |
482 | if (curl_errno($ch)) { |
6bf55889 |
483 | $error = curl_error($ch); |
484 | $error_no = curl_errno($ch); |
485 | curl_close($ch); |
486 | |
487 | if ($fullresponse) { |
488 | $response = new object(); |
489 | if ($error_no == 28) { |
490 | $response->status = '-100'; // mimic snoopy |
491 | } else { |
492 | $response->status = '0'; |
493 | } |
494 | $response->headers = array(); |
495 | $response->response_code = $error; |
496 | $response->results = ''; |
497 | $response->error = $error; |
498 | return $response; |
499 | } else { |
599f06cf |
500 | debugging("cURL request for \"$url\" failed with: $error ($error_no)", DEBUG_ALL); |
6bf55889 |
501 | return false; |
502 | } |
5f8bdc17 |
503 | |
504 | } else { |
6bf55889 |
505 | $info = curl_getinfo($ch); |
506 | curl_close($ch); |
599f06cf |
507 | |
508 | if (empty($info['http_code'])) { |
509 | // for security reasons we support only true http connections (Location: file:// exploit prevention) |
510 | $response = new object(); |
511 | $response->status = '0'; |
512 | $response->headers = array(); |
513 | $response->response_code = 'Unknown cURL error'; |
514 | $response->results = ''; // do NOT change this! |
515 | $response->error = 'Unknown cURL error'; |
516 | |
517 | } else { |
518 | // strip redirect headers and get headers array and content |
519 | $data = explode("\r\n\r\n", $data, $info['redirect_count'] + 2); |
520 | $results = array_pop($data); |
521 | $headers = array_pop($data); |
522 | $headers = explode("\r\n", trim($headers)); |
523 | |
524 | $response = new object();; |
525 | $response->status = (string)$info['http_code']; |
526 | $response->headers = $headers; |
527 | $response->response_code = $headers[0]; |
528 | $response->results = $results; |
529 | $response->error = ''; |
530 | } |
6bf55889 |
531 | |
532 | if ($fullresponse) { |
533 | return $response; |
534 | } else if ($info['http_code'] != 200) { |
599f06cf |
535 | debugging("cURL request for \"$url\" failed, HTTP response code: ".$response->response_code, DEBUG_ALL); |
6bf55889 |
536 | return false; |
537 | } else { |
538 | return $response->results; |
5f8bdc17 |
539 | } |
08ec989f |
540 | } |
8ee88311 |
541 | } |
542 | |
3ce73b14 |
543 | /** |
76ca1ff1 |
544 | * @return List of information about file types based on extensions. |
3ce73b14 |
545 | * Associative array of extension (lower-case) to associative array |
546 | * from 'element name' to data. Current element names are 'type' and 'icon'. |
76ca1ff1 |
547 | * Unknown types should use the 'xxx' entry which includes defaults. |
3ce73b14 |
548 | */ |
549 | function get_mimetypes_array() { |
172dd12c |
550 | static $mimearray = array ( |
a370c895 |
551 | 'xxx' => array ('type'=>'document/unknown', 'icon'=>'unknown.gif'), |
552 | '3gp' => array ('type'=>'video/quicktime', 'icon'=>'video.gif'), |
553 | 'ai' => array ('type'=>'application/postscript', 'icon'=>'image.gif'), |
554 | 'aif' => array ('type'=>'audio/x-aiff', 'icon'=>'audio.gif'), |
555 | 'aiff' => array ('type'=>'audio/x-aiff', 'icon'=>'audio.gif'), |
556 | 'aifc' => array ('type'=>'audio/x-aiff', 'icon'=>'audio.gif'), |
557 | 'applescript' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
558 | 'asc' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
18bf47ef |
559 | 'asm' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
a370c895 |
560 | 'au' => array ('type'=>'audio/au', 'icon'=>'audio.gif'), |
561 | 'avi' => array ('type'=>'video/x-ms-wm', 'icon'=>'avi.gif'), |
562 | 'bmp' => array ('type'=>'image/bmp', 'icon'=>'image.gif'), |
18bf47ef |
563 | 'c' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
a370c895 |
564 | 'cct' => array ('type'=>'shockwave/director', 'icon'=>'flash.gif'), |
18bf47ef |
565 | 'cpp' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
a370c895 |
566 | 'cs' => array ('type'=>'application/x-csh', 'icon'=>'text.gif'), |
76ca1ff1 |
567 | 'css' => array ('type'=>'text/css', 'icon'=>'text.gif'), |
6ae5e482 |
568 | 'csv' => array ('type'=>'text/csv', 'icon'=>'excel.gif'), |
a370c895 |
569 | 'dv' => array ('type'=>'video/x-dv', 'icon'=>'video.gif'), |
609d84e3 |
570 | 'dmg' => array ('type'=>'application/octet-stream', 'icon'=>'dmg.gif'), |
a370c895 |
571 | 'doc' => array ('type'=>'application/msword', 'icon'=>'word.gif'), |
68da9722 |
572 | 'docx' => array ('type'=>'application/msword', 'icon'=>'docx.gif'), |
573 | 'docm' => array ('type'=>'application/msword', 'icon'=>'docm.gif'), |
574 | 'dotx' => array ('type'=>'application/msword', 'icon'=>'dotx.gif'), |
a370c895 |
575 | 'dcr' => array ('type'=>'application/x-director', 'icon'=>'flash.gif'), |
576 | 'dif' => array ('type'=>'video/x-dv', 'icon'=>'video.gif'), |
577 | 'dir' => array ('type'=>'application/x-director', 'icon'=>'flash.gif'), |
578 | 'dxr' => array ('type'=>'application/x-director', 'icon'=>'flash.gif'), |
579 | 'eps' => array ('type'=>'application/postscript', 'icon'=>'pdf.gif'), |
ee7f231d |
580 | 'fdf' => array ('type'=>'application/pdf', 'icon'=>'pdf.gif'), |
759bc3c8 |
581 | 'flv' => array ('type'=>'video/x-flv', 'icon'=>'video.gif'), |
a370c895 |
582 | 'gif' => array ('type'=>'image/gif', 'icon'=>'image.gif'), |
583 | 'gtar' => array ('type'=>'application/x-gtar', 'icon'=>'zip.gif'), |
759bc3c8 |
584 | 'tgz' => array ('type'=>'application/g-zip', 'icon'=>'zip.gif'), |
a370c895 |
585 | 'gz' => array ('type'=>'application/g-zip', 'icon'=>'zip.gif'), |
586 | 'gzip' => array ('type'=>'application/g-zip', 'icon'=>'zip.gif'), |
587 | 'h' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
18bf47ef |
588 | 'hpp' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
a370c895 |
589 | 'hqx' => array ('type'=>'application/mac-binhex40', 'icon'=>'zip.gif'), |
70ee2841 |
590 | 'htc' => array ('type'=>'text/x-component', 'icon'=>'text.gif'), |
a370c895 |
591 | 'html' => array ('type'=>'text/html', 'icon'=>'html.gif'), |
1659a998 |
592 | 'xhtml'=> array ('type'=>'application/xhtml+xml', 'icon'=>'html.gif'), |
a370c895 |
593 | 'htm' => array ('type'=>'text/html', 'icon'=>'html.gif'), |
08297dcb |
594 | 'ico' => array ('type'=>'image/vnd.microsoft.icon', 'icon'=>'image.gif'), |
4b270c4c |
595 | 'ics' => array ('type'=>'text/calendar', 'icon'=>'text.gif'), |
08297dcb |
596 | 'isf' => array ('type'=>'application/inspiration', 'icon'=>'isf.gif'), |
597 | 'ist' => array ('type'=>'application/inspiration.template', 'icon'=>'isf.gif'), |
18bf47ef |
598 | 'java' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
a00420fb |
599 | 'jcb' => array ('type'=>'text/xml', 'icon'=>'jcb.gif'), |
600 | 'jcl' => array ('type'=>'text/xml', 'icon'=>'jcl.gif'), |
601 | 'jcw' => array ('type'=>'text/xml', 'icon'=>'jcw.gif'), |
602 | 'jmt' => array ('type'=>'text/xml', 'icon'=>'jmt.gif'), |
603 | 'jmx' => array ('type'=>'text/xml', 'icon'=>'jmx.gif'), |
a370c895 |
604 | 'jpe' => array ('type'=>'image/jpeg', 'icon'=>'image.gif'), |
605 | 'jpeg' => array ('type'=>'image/jpeg', 'icon'=>'image.gif'), |
606 | 'jpg' => array ('type'=>'image/jpeg', 'icon'=>'image.gif'), |
a00420fb |
607 | 'jqz' => array ('type'=>'text/xml', 'icon'=>'jqz.gif'), |
a370c895 |
608 | 'js' => array ('type'=>'application/x-javascript', 'icon'=>'text.gif'), |
609 | 'latex'=> array ('type'=>'application/x-latex', 'icon'=>'text.gif'), |
610 | 'm' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
611 | 'mov' => array ('type'=>'video/quicktime', 'icon'=>'video.gif'), |
612 | 'movie'=> array ('type'=>'video/x-sgi-movie', 'icon'=>'video.gif'), |
613 | 'm3u' => array ('type'=>'audio/x-mpegurl', 'icon'=>'audio.gif'), |
614 | 'mp3' => array ('type'=>'audio/mp3', 'icon'=>'audio.gif'), |
615 | 'mp4' => array ('type'=>'video/mp4', 'icon'=>'video.gif'), |
616 | 'mpeg' => array ('type'=>'video/mpeg', 'icon'=>'video.gif'), |
617 | 'mpe' => array ('type'=>'video/mpeg', 'icon'=>'video.gif'), |
618 | 'mpg' => array ('type'=>'video/mpeg', 'icon'=>'video.gif'), |
5395334d |
619 | |
620 | 'odt' => array ('type'=>'application/vnd.oasis.opendocument.text', 'icon'=>'odt.gif'), |
621 | 'ott' => array ('type'=>'application/vnd.oasis.opendocument.text-template', 'icon'=>'odt.gif'), |
622 | 'oth' => array ('type'=>'application/vnd.oasis.opendocument.text-web', 'icon'=>'odt.gif'), |
e10bc440 |
623 | 'odm' => array ('type'=>'application/vnd.oasis.opendocument.text-master', 'icon'=>'odm.gif'), |
624 | 'odg' => array ('type'=>'application/vnd.oasis.opendocument.graphics', 'icon'=>'odg.gif'), |
625 | 'otg' => array ('type'=>'application/vnd.oasis.opendocument.graphics-template', 'icon'=>'odg.gif'), |
626 | 'odp' => array ('type'=>'application/vnd.oasis.opendocument.presentation', 'icon'=>'odp.gif'), |
627 | 'otp' => array ('type'=>'application/vnd.oasis.opendocument.presentation-template', 'icon'=>'odp.gif'), |
628 | 'ods' => array ('type'=>'application/vnd.oasis.opendocument.spreadsheet', 'icon'=>'ods.gif'), |
629 | 'ots' => array ('type'=>'application/vnd.oasis.opendocument.spreadsheet-template', 'icon'=>'ods.gif'), |
630 | 'odc' => array ('type'=>'application/vnd.oasis.opendocument.chart', 'icon'=>'odc.gif'), |
631 | 'odf' => array ('type'=>'application/vnd.oasis.opendocument.formula', 'icon'=>'odf.gif'), |
632 | 'odb' => array ('type'=>'application/vnd.oasis.opendocument.database', 'icon'=>'odb.gif'), |
633 | 'odi' => array ('type'=>'application/vnd.oasis.opendocument.image', 'icon'=>'odi.gif'), |
5395334d |
634 | |
a370c895 |
635 | 'pct' => array ('type'=>'image/pict', 'icon'=>'image.gif'), |
636 | 'pdf' => array ('type'=>'application/pdf', 'icon'=>'pdf.gif'), |
637 | 'php' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
638 | 'pic' => array ('type'=>'image/pict', 'icon'=>'image.gif'), |
639 | 'pict' => array ('type'=>'image/pict', 'icon'=>'image.gif'), |
640 | 'png' => array ('type'=>'image/png', 'icon'=>'image.gif'), |
641 | 'pps' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'powerpoint.gif'), |
642 | 'ppt' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'powerpoint.gif'), |
68da9722 |
643 | 'pptx' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'pptx.gif'), |
644 | 'pptm' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'pptm.gif'), |
645 | 'potx' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'potx.gif'), |
646 | 'potm' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'potm.gif'), |
647 | 'ppam' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'ppam.gif'), |
648 | 'ppsx' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'ppsx.gif'), |
649 | 'ppsm' => array ('type'=>'application/vnd.ms-powerpoint', 'icon'=>'ppsm.gif'), |
a370c895 |
650 | 'ps' => array ('type'=>'application/postscript', 'icon'=>'pdf.gif'), |
651 | 'qt' => array ('type'=>'video/quicktime', 'icon'=>'video.gif'), |
652 | 'ra' => array ('type'=>'audio/x-realaudio', 'icon'=>'audio.gif'), |
653 | 'ram' => array ('type'=>'audio/x-pn-realaudio', 'icon'=>'audio.gif'), |
a00420fb |
654 | 'rhb' => array ('type'=>'text/xml', 'icon'=>'xml.gif'), |
a370c895 |
655 | 'rm' => array ('type'=>'audio/x-pn-realaudio', 'icon'=>'audio.gif'), |
656 | 'rtf' => array ('type'=>'text/rtf', 'icon'=>'text.gif'), |
657 | 'rtx' => array ('type'=>'text/richtext', 'icon'=>'text.gif'), |
658 | 'sh' => array ('type'=>'application/x-sh', 'icon'=>'text.gif'), |
659 | 'sit' => array ('type'=>'application/x-stuffit', 'icon'=>'zip.gif'), |
660 | 'smi' => array ('type'=>'application/smil', 'icon'=>'text.gif'), |
661 | 'smil' => array ('type'=>'application/smil', 'icon'=>'text.gif'), |
a00420fb |
662 | 'sqt' => array ('type'=>'text/xml', 'icon'=>'xml.gif'), |
4db69ffb |
663 | 'svg' => array ('type'=>'image/svg+xml', 'icon'=>'image.gif'), |
664 | 'svgz' => array ('type'=>'image/svg+xml', 'icon'=>'image.gif'), |
a370c895 |
665 | 'swa' => array ('type'=>'application/x-director', 'icon'=>'flash.gif'), |
666 | 'swf' => array ('type'=>'application/x-shockwave-flash', 'icon'=>'flash.gif'), |
667 | 'swfl' => array ('type'=>'application/x-shockwave-flash', 'icon'=>'flash.gif'), |
5395334d |
668 | |
669 | 'sxw' => array ('type'=>'application/vnd.sun.xml.writer', 'icon'=>'odt.gif'), |
670 | 'stw' => array ('type'=>'application/vnd.sun.xml.writer.template', 'icon'=>'odt.gif'), |
671 | 'sxc' => array ('type'=>'application/vnd.sun.xml.calc', 'icon'=>'odt.gif'), |
672 | 'stc' => array ('type'=>'application/vnd.sun.xml.calc.template', 'icon'=>'odt.gif'), |
673 | 'sxd' => array ('type'=>'application/vnd.sun.xml.draw', 'icon'=>'odt.gif'), |
674 | 'std' => array ('type'=>'application/vnd.sun.xml.draw.template', 'icon'=>'odt.gif'), |
675 | 'sxi' => array ('type'=>'application/vnd.sun.xml.impress', 'icon'=>'odt.gif'), |
676 | 'sti' => array ('type'=>'application/vnd.sun.xml.impress.template', 'icon'=>'odt.gif'), |
677 | 'sxg' => array ('type'=>'application/vnd.sun.xml.writer.global', 'icon'=>'odt.gif'), |
678 | 'sxm' => array ('type'=>'application/vnd.sun.xml.math', 'icon'=>'odt.gif'), |
679 | |
a370c895 |
680 | 'tar' => array ('type'=>'application/x-tar', 'icon'=>'zip.gif'), |
681 | 'tif' => array ('type'=>'image/tiff', 'icon'=>'image.gif'), |
682 | 'tiff' => array ('type'=>'image/tiff', 'icon'=>'image.gif'), |
683 | 'tex' => array ('type'=>'application/x-tex', 'icon'=>'text.gif'), |
684 | 'texi' => array ('type'=>'application/x-texinfo', 'icon'=>'text.gif'), |
685 | 'texinfo' => array ('type'=>'application/x-texinfo', 'icon'=>'text.gif'), |
686 | 'tsv' => array ('type'=>'text/tab-separated-values', 'icon'=>'text.gif'), |
687 | 'txt' => array ('type'=>'text/plain', 'icon'=>'text.gif'), |
688 | 'wav' => array ('type'=>'audio/wav', 'icon'=>'audio.gif'), |
689 | 'wmv' => array ('type'=>'video/x-ms-wmv', 'icon'=>'avi.gif'), |
690 | 'asf' => array ('type'=>'video/x-ms-asf', 'icon'=>'avi.gif'), |
ee7f231d |
691 | 'xdp' => array ('type'=>'application/pdf', 'icon'=>'pdf.gif'), |
692 | 'xfd' => array ('type'=>'application/pdf', 'icon'=>'pdf.gif'), |
693 | 'xfdf' => array ('type'=>'application/pdf', 'icon'=>'pdf.gif'), |
a370c895 |
694 | 'xls' => array ('type'=>'application/vnd.ms-excel', 'icon'=>'excel.gif'), |
68da9722 |
695 | 'xlsx' => array ('type'=>'application/vnd.ms-excel', 'icon'=>'xlsx.gif'), |
696 | 'xlsm' => array ('type'=>'application/vnd.ms-excel', 'icon'=>'xlsm.gif'), |
697 | 'xltx' => array ('type'=>'application/vnd.ms-excel', 'icon'=>'xltx.gif'), |
698 | 'xltm' => array ('type'=>'application/vnd.ms-excel', 'icon'=>'xltm.gif'), |
699 | 'xlsb' => array ('type'=>'application/vnd.ms-excel', 'icon'=>'xlsb.gif'), |
700 | 'xlam' => array ('type'=>'application/vnd.ms-excel', 'icon'=>'xlam.gif'), |
a370c895 |
701 | 'xml' => array ('type'=>'application/xml', 'icon'=>'xml.gif'), |
702 | 'xsl' => array ('type'=>'text/xml', 'icon'=>'xml.gif'), |
703 | 'zip' => array ('type'=>'application/zip', 'icon'=>'zip.gif') |
f1e0649c |
704 | ); |
172dd12c |
705 | return $mimearray; |
3ce73b14 |
706 | } |
707 | |
76ca1ff1 |
708 | /** |
3ce73b14 |
709 | * Obtains information about a filetype based on its extension. Will |
710 | * use a default if no information is present about that particular |
711 | * extension. |
76ca1ff1 |
712 | * @param string $element Desired information (usually 'icon' |
3ce73b14 |
713 | * for icon filename or 'type' for MIME type) |
76ca1ff1 |
714 | * @param string $filename Filename we're looking up |
3ce73b14 |
715 | * @return string Requested piece of information from array |
716 | */ |
717 | function mimeinfo($element, $filename) { |
172dd12c |
718 | $mimeinfo = get_mimetypes_array(); |
f1e0649c |
719 | |
a370c895 |
720 | if (eregi('\.([a-z0-9]+)$', $filename, $match)) { |
f1e0649c |
721 | if (isset($mimeinfo[strtolower($match[1])][$element])) { |
722 | return $mimeinfo[strtolower($match[1])][$element]; |
723 | } else { |
a370c895 |
724 | return $mimeinfo['xxx'][$element]; // By default |
f1e0649c |
725 | } |
726 | } else { |
a370c895 |
727 | return $mimeinfo['xxx'][$element]; // By default |
f1e0649c |
728 | } |
729 | } |
730 | |
76ca1ff1 |
731 | /** |
3ce73b14 |
732 | * Obtains information about a filetype based on the MIME type rather than |
733 | * the other way around. |
734 | * @param string $element Desired information (usually 'icon') |
76ca1ff1 |
735 | * @param string $mimetype MIME type we're looking up |
3ce73b14 |
736 | * @return string Requested piece of information from array |
737 | */ |
738 | function mimeinfo_from_type($element, $mimetype) { |
172dd12c |
739 | $mimeinfo = get_mimetypes_array(); |
76ca1ff1 |
740 | |
3ce73b14 |
741 | foreach($mimeinfo as $values) { |
742 | if($values['type']==$mimetype) { |
743 | if(isset($values[$element])) { |
744 | return $values[$element]; |
745 | } |
746 | break; |
747 | } |
748 | } |
749 | return $mimeinfo['xxx'][$element]; // Default |
750 | } |
b9709b76 |
751 | |
42ead7d7 |
752 | /** |
753 | * Get information about a filetype based on the icon file. |
754 | * @param string $element Desired information (usually 'icon') |
755 | * @param string $icon Icon file path. |
0b46f19e |
756 | * @param boolean $all return all matching entries (defaults to false - last match) |
42ead7d7 |
757 | * @return string Requested piece of information from array |
758 | */ |
0b46f19e |
759 | function mimeinfo_from_icon($element, $icon, $all=false) { |
172dd12c |
760 | $mimeinfo = get_mimetypes_array(); |
42ead7d7 |
761 | |
762 | if (preg_match("/\/(.*)/", $icon, $matches)) { |
763 | $icon = $matches[1]; |
764 | } |
0b46f19e |
765 | $info = array($mimeinfo['xxx'][$element]); // Default |
42ead7d7 |
766 | foreach($mimeinfo as $values) { |
767 | if($values['icon']==$icon) { |
768 | if(isset($values[$element])) { |
0b46f19e |
769 | $info[] = $values[$element]; |
42ead7d7 |
770 | } |
771 | //No break, for example for 'excel.gif' we don't want 'csv'! |
772 | } |
773 | } |
0b46f19e |
774 | if ($all) { |
775 | return $info; |
776 | } |
777 | return array_pop($info); // Return last match (mimicking behaviour/comment inside foreach loop) |
42ead7d7 |
778 | } |
779 | |
c0381e22 |
780 | /** |
76ca1ff1 |
781 | * Obtains descriptions for file types (e.g. 'Microsoft Word document') from the |
782 | * mimetypes.php language file. |
c0381e22 |
783 | * @param string $mimetype MIME type (can be obtained using the mimeinfo function) |
784 | * @param bool $capitalise If true, capitalises first character of result |
76ca1ff1 |
785 | * @return string Text description |
c0381e22 |
786 | */ |
787 | function get_mimetype_description($mimetype,$capitalise=false) { |
788 | $result=get_string($mimetype,'mimetypes'); |
789 | // Surrounded by square brackets indicates that there isn't a string for that |
790 | // (maybe there is a better way to find this out?) |
791 | if(strpos($result,'[')===0) { |
792 | $result=get_string('document/unknown','mimetypes'); |
76ca1ff1 |
793 | } |
c0381e22 |
794 | if($capitalise) { |
795 | $result=ucfirst($result); |
796 | } |
797 | return $result; |
798 | } |
799 | |
9e5fa330 |
800 | /** |
801 | * Reprot file is not found or not accessible |
802 | * @return does not return, terminates script |
803 | */ |
804 | function send_file_not_found() { |
805 | global $CFG, $COURSE; |
806 | header('HTTP/1.0 404 not found'); |
807 | print_error('filenotfound', 'error', $CFG->wwwroot.'/course/view.php?id='.$COURSE->id); //this is not displayed on IIS?? |
808 | } |
809 | |
c87c428e |
810 | /** |
811 | * Handles the sending of temporary file to user, download is forced. |
812 | * File is deleted after abort or succesful sending. |
813 | * @param string $path path to file, preferably from moodledata/temp/something; or content of file itself |
814 | * @param string $filename proposed file name when saving file |
815 | * @param bool $path is content of file |
45c0d224 |
816 | * @return does not return, script terminated |
c87c428e |
817 | */ |
45c0d224 |
818 | function send_temp_file($path, $filename, $pathisstring=false) { |
c87c428e |
819 | global $CFG; |
820 | |
821 | // close session - not needed anymore |
822 | @session_write_close(); |
823 | |
824 | if (!$pathisstring) { |
825 | if (!file_exists($path)) { |
826 | header('HTTP/1.0 404 not found'); |
45c0d224 |
827 | print_error('filenotfound', 'error', $CFG->wwwroot.'/'); |
c87c428e |
828 | } |
829 | // executed after normal finish or abort |
830 | @register_shutdown_function('send_temp_file_finished', $path); |
831 | } |
832 | |
833 | //IE compatibiltiy HACK! |
834 | if (ini_get('zlib.output_compression')) { |
835 | ini_set('zlib.output_compression', 'Off'); |
836 | } |
837 | |
838 | // if user is using IE, urlencode the filename so that multibyte file name will show up correctly on popup |
839 | if (check_browser_version('MSIE')) { |
840 | $filename = urlencode($filename); |
841 | } |
842 | |
843 | $filesize = $pathisstring ? strlen($path) : filesize($path); |
844 | |
845 | @header('Content-Disposition: attachment; filename='.$filename); |
846 | @header('Content-Length: '.$filesize); |
847 | if (strpos($CFG->wwwroot, 'https://') === 0) { //https sites - watch out for IE! KB812935 and KB316431 |
848 | @header('Cache-Control: max-age=10'); |
849 | @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); |
850 | @header('Pragma: '); |
851 | } else { //normal http - prevent caching at all cost |
852 | @header('Cache-Control: private, must-revalidate, pre-check=0, post-check=0, max-age=0'); |
853 | @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); |
854 | @header('Pragma: no-cache'); |
855 | } |
856 | @header('Accept-Ranges: none'); // Do not allow byteserving |
857 | |
858 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
859 | if ($pathisstring) { |
860 | echo $path; |
861 | } else { |
29e3d7e2 |
862 | @readfile($path); |
c87c428e |
863 | } |
864 | |
865 | die; //no more chars to output |
866 | } |
867 | |
868 | /** |
869 | * Internal callnack function used by send_temp_file() |
870 | */ |
871 | function send_temp_file_finished($path) { |
872 | if (file_exists($path)) { |
873 | @unlink($path); |
874 | } |
875 | } |
876 | |
76ca1ff1 |
877 | /** |
878 | * Handles the sending of file data to the user's browser, including support for |
879 | * byteranges etc. |
ba75ad94 |
880 | * @param string $path Path of file on disk (including real filename), or actual content of file as string |
881 | * @param string $filename Filename to send |
882 | * @param int $lifetime Number of seconds before the file should expire from caches (default 24 hours) |
883 | * @param int $filter 0 (default)=no filtering, 1=all files, 2=html files only |
884 | * @param bool $pathisstring If true (default false), $path is the content to send and not the pathname |
885 | * @param bool $forcedownload If true (default false), forces download of file rather than view in browser/plugin |
886 | * @param string $mimetype Include to specify the MIME type; leave blank to have it guess the type from $filename |
b379f7d9 |
887 | * @param bool $dontdie - return control to caller afterwards. this is not recommended and only used for cleanup tasks. |
888 | * if this is passed as true, ignore_user_abort is called. if you don't want your processing to continue on cancel, |
29e3d7e2 |
889 | * you must detect this case when control is returned using connection_aborted. Please not that session is closed |
890 | * and should not be reopened. |
891 | * @return no return or void, script execution stopped unless $dontdie is true |
b9709b76 |
892 | */ |
b379f7d9 |
893 | function send_file($path, $filename, $lifetime = 'default' , $filter=0, $pathisstring=false, $forcedownload=false, $mimetype='', $dontdie=false) { |
6800d78e |
894 | global $CFG, $COURSE, $SESSION; |
f1e0649c |
895 | |
b379f7d9 |
896 | if ($dontdie) { |
15325f55 |
897 | ignore_user_abort(true); |
b379f7d9 |
898 | } |
899 | |
c8a5c6a4 |
900 | // MDL-11789, apply $CFG->filelifetime here |
901 | if ($lifetime === 'default') { |
902 | if (!empty($CFG->filelifetime)) { |
903 | $filetime = $CFG->filelifetime; |
904 | } else { |
905 | $filetime = 86400; |
906 | } |
907 | } |
908 | |
172dd12c |
909 | session_write_close(); // unlock session during fileserving |
910 | |
ba4e0b05 |
911 | // Use given MIME type if specified, otherwise guess it using mimeinfo. |
912 | // IE, Konqueror and Opera open html file directly in browser from web even when directed to save it to disk :-O |
913 | // only Firefox saves all files locally before opening when content-disposition: attachment stated |
914 | $isFF = check_browser_version('Firefox', '1.5'); // only FF > 1.5 properly tested |
76ca1ff1 |
915 | $mimetype = ($forcedownload and !$isFF) ? 'application/x-forcedownload' : |
ba4e0b05 |
916 | ($mimetype ? $mimetype : mimeinfo('type', $filename)); |
f1e0649c |
917 | $lastmodified = $pathisstring ? time() : filemtime($path); |
918 | $filesize = $pathisstring ? strlen($path) : filesize($path); |
919 | |
36bddcf5 |
920 | /* - MDL-13949 |
ee7f231d |
921 | //Adobe Acrobat Reader XSS prevention |
922 | if ($mimetype=='application/pdf' or mimeinfo('type', $filename)=='application/pdf') { |
923 | //please note that it prevents opening of pdfs in browser when http referer disabled |
924 | //or file linked from another site; browser caching of pdfs is now disabled too |
c57d8874 |
925 | if (!empty($_SERVER['HTTP_RANGE'])) { |
926 | //already byteserving |
76ca1ff1 |
927 | $lifetime = 1; // >0 needed for byteserving |
c57d8874 |
928 | } else if (empty($_SERVER['HTTP_REFERER']) or strpos($_SERVER['HTTP_REFERER'], $CFG->wwwroot)!==0) { |
ee7f231d |
929 | $mimetype = 'application/x-forcedownload'; |
930 | $forcedownload = true; |
931 | $lifetime = 0; |
932 | } else { |
76ca1ff1 |
933 | $lifetime = 1; // >0 needed for byteserving |
ee7f231d |
934 | } |
b8806ccc |
935 | } |
36bddcf5 |
936 | */ |
f3f7610c |
937 | |
69faecce |
938 | //IE compatibiltiy HACK! |
4c8c65ec |
939 | if (ini_get('zlib.output_compression')) { |
69faecce |
940 | ini_set('zlib.output_compression', 'Off'); |
941 | } |
942 | |
4c8c65ec |
943 | //try to disable automatic sid rewrite in cookieless mode |
8914cb82 |
944 | @ini_set("session.use_trans_sid", "false"); |
4c8c65ec |
945 | |
946 | //do not put '@' before the next header to detect incorrect moodle configurations, |
947 | //error should be better than "weird" empty lines for admins/users |
948 | //TODO: should we remove all those @ before the header()? Are all of the values supported on all servers? |
949 | header('Last-Modified: '. gmdate('D, d M Y H:i:s', $lastmodified) .' GMT'); |
950 | |
4f047de2 |
951 | // if user is using IE, urlencode the filename so that multibyte file name will show up correctly on popup |
952 | if (check_browser_version('MSIE')) { |
4638009b |
953 | $filename = rawurlencode($filename); |
4f047de2 |
954 | } |
955 | |
4c8c65ec |
956 | if ($forcedownload) { |
4638009b |
957 | @header('Content-Disposition: attachment; filename="'.$filename.'"'); |
4c8c65ec |
958 | } else { |
4638009b |
959 | @header('Content-Disposition: inline; filename="'.$filename.'"'); |
4c8c65ec |
960 | } |
961 | |
f1e0649c |
962 | if ($lifetime > 0) { |
4c8c65ec |
963 | @header('Cache-Control: max-age='.$lifetime); |
964 | @header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT'); |
f1e0649c |
965 | @header('Pragma: '); |
4c8c65ec |
966 | |
967 | if (empty($CFG->disablebyteserving) && !$pathisstring && $mimetype != 'text/plain' && $mimetype != 'text/html') { |
968 | |
969 | @header('Accept-Ranges: bytes'); |
970 | |
971 | if (!empty($_SERVER['HTTP_RANGE']) && strpos($_SERVER['HTTP_RANGE'],'bytes=') !== FALSE) { |
972 | // byteserving stuff - for acrobat reader and download accelerators |
973 | // see: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35 |
974 | // inspired by: http://www.coneural.org/florian/papers/04_byteserving.php |
975 | $ranges = false; |
976 | if (preg_match_all('/(\d*)-(\d*)/', $_SERVER['HTTP_RANGE'], $ranges, PREG_SET_ORDER)) { |
977 | foreach ($ranges as $key=>$value) { |
978 | if ($ranges[$key][1] == '') { |
979 | //suffix case |
980 | $ranges[$key][1] = $filesize - $ranges[$key][2]; |
981 | $ranges[$key][2] = $filesize - 1; |
982 | } else if ($ranges[$key][2] == '' || $ranges[$key][2] > $filesize - 1) { |
983 | //fix range length |
984 | $ranges[$key][2] = $filesize - 1; |
985 | } |
986 | if ($ranges[$key][2] != '' && $ranges[$key][2] < $ranges[$key][1]) { |
987 | //invalid byte-range ==> ignore header |
988 | $ranges = false; |
989 | break; |
990 | } |
991 | //prepare multipart header |
992 | $ranges[$key][0] = "\r\n--".BYTESERVING_BOUNDARY."\r\nContent-Type: $mimetype\r\n"; |
993 | $ranges[$key][0] .= "Content-Range: bytes {$ranges[$key][1]}-{$ranges[$key][2]}/$filesize\r\n\r\n"; |
994 | } |
995 | } else { |
996 | $ranges = false; |
997 | } |
998 | if ($ranges) { |
172dd12c |
999 | $handle = fopen($filename, 'rb'); |
1000 | byteserving_send_file($handle, $mimetype, $ranges, $filesize); |
4c8c65ec |
1001 | } |
1002 | } |
1003 | } else { |
1004 | /// Do not byteserve (disabled, strings, text and html files). |
1005 | @header('Accept-Ranges: none'); |
1006 | } |
1007 | } else { // Do not cache files in proxies and browsers |
85e00626 |
1008 | if (strpos($CFG->wwwroot, 'https://') === 0) { //https sites - watch out for IE! KB812935 and KB316431 |
1009 | @header('Cache-Control: max-age=10'); |
4c8c65ec |
1010 | @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); |
85e00626 |
1011 | @header('Pragma: '); |
1012 | } else { //normal http - prevent caching at all cost |
1013 | @header('Cache-Control: private, must-revalidate, pre-check=0, post-check=0, max-age=0'); |
4c8c65ec |
1014 | @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); |
85e00626 |
1015 | @header('Pragma: no-cache'); |
1016 | } |
4c8c65ec |
1017 | @header('Accept-Ranges: none'); // Do not allow byteserving when caching disabled |
69faecce |
1018 | } |
f1e0649c |
1019 | |
b9709b76 |
1020 | if (empty($filter)) { |
4c8c65ec |
1021 | if ($mimetype == 'text/html' && !empty($CFG->usesid) && empty($_COOKIE['MoodleSession'.$CFG->sessioncookie])) { |
1022 | //cookieless mode - rewrite links |
1023 | @header('Content-Type: text/html'); |
1024 | $path = $pathisstring ? $path : implode('', file($path)); |
6800d78e |
1025 | $path = $SESSION->sid_ob_rewrite($path); |
4c8c65ec |
1026 | $filesize = strlen($path); |
1027 | $pathisstring = true; |
1028 | } else if ($mimetype == 'text/plain') { |
810944af |
1029 | @header('Content-Type: Text/plain; charset=utf-8'); //add encoding |
f1e0649c |
1030 | } else { |
4c8c65ec |
1031 | @header('Content-Type: '.$mimetype); |
f1e0649c |
1032 | } |
4c8c65ec |
1033 | @header('Content-Length: '.$filesize); |
1034 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
f1e0649c |
1035 | if ($pathisstring) { |
1036 | echo $path; |
4c8c65ec |
1037 | } else { |
29e3d7e2 |
1038 | @readfile($path); |
f1e0649c |
1039 | } |
1040 | } else { // Try to put the file through filters |
f1e0649c |
1041 | if ($mimetype == 'text/html') { |
a17c57b5 |
1042 | $options = new object(); |
f1e0649c |
1043 | $options->noclean = true; |
a17c57b5 |
1044 | $options->nocache = true; // temporary workaround for MDL-5136 |
f1e0649c |
1045 | $text = $pathisstring ? $path : implode('', file($path)); |
76ca1ff1 |
1046 | |
3ace5ee4 |
1047 | $text = file_modify_html_header($text); |
60f9e36e |
1048 | $output = format_text($text, FORMAT_HTML, $options, $COURSE->id); |
4c8c65ec |
1049 | if (!empty($CFG->usesid) && empty($_COOKIE['MoodleSession'.$CFG->sessioncookie])) { |
1050 | //cookieless mode - rewrite links |
6800d78e |
1051 | $output = $SESSION->sid_ob_rewrite($output); |
4c8c65ec |
1052 | } |
f1e0649c |
1053 | |
4c8c65ec |
1054 | @header('Content-Length: '.strlen($output)); |
1055 | @header('Content-Type: text/html'); |
1056 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
f1e0649c |
1057 | echo $output; |
b9709b76 |
1058 | // only filter text if filter all files is selected |
1059 | } else if (($mimetype == 'text/plain') and ($filter == 1)) { |
60f9e36e |
1060 | $options = new object(); |
f1e0649c |
1061 | $options->newlines = false; |
1062 | $options->noclean = true; |
1063 | $text = htmlentities($pathisstring ? $path : implode('', file($path))); |
60f9e36e |
1064 | $output = '<pre>'. format_text($text, FORMAT_MOODLE, $options, $COURSE->id) .'</pre>'; |
4c8c65ec |
1065 | if (!empty($CFG->usesid) && empty($_COOKIE['MoodleSession'.$CFG->sessioncookie])) { |
1066 | //cookieless mode - rewrite links |
6800d78e |
1067 | $output = $SESSION->sid_ob_rewrite($output); |
4c8c65ec |
1068 | } |
f1e0649c |
1069 | |
4c8c65ec |
1070 | @header('Content-Length: '.strlen($output)); |
810944af |
1071 | @header('Content-Type: text/html; charset=utf-8'); //add encoding |
4c8c65ec |
1072 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
f1e0649c |
1073 | echo $output; |
1074 | } else { // Just send it out raw |
4c8c65ec |
1075 | @header('Content-Length: '.$filesize); |
1076 | @header('Content-Type: '.$mimetype); |
1077 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
f1e0649c |
1078 | if ($pathisstring) { |
1079 | echo $path; |
1080 | }else { |
29e3d7e2 |
1081 | @readfile($path); |
f1e0649c |
1082 | } |
1083 | } |
1084 | } |
b379f7d9 |
1085 | if ($dontdie) { |
1086 | return; |
1087 | } |
f1e0649c |
1088 | die; //no more chars to output!!! |
1089 | } |
1090 | |
172dd12c |
1091 | /** |
1092 | * Handles the sending of file data to the user's browser, including support for |
1093 | * byteranges etc. |
1094 | * @param object $stored_file local file object |
1095 | * @param int $lifetime Number of seconds before the file should expire from caches (default 24 hours) |
1096 | * @param int $filter 0 (default)=no filtering, 1=all files, 2=html files only |
1097 | * @param bool $forcedownload If true (default false), forces download of file rather than view in browser/plugin |
1098 | * @param string $filename Override filename |
1099 | * @param string $mimetype Include to specify the MIME type; leave blank to have it guess the type from $filename |
b379f7d9 |
1100 | * @param bool $dontdie - return control to caller afterwards. this is not recommended and only used for cleanup tasks. |
1101 | * if this is passed as true, ignore_user_abort is called. if you don't want your processing to continue on cancel, |
29e3d7e2 |
1102 | * you must detect this case when control is returned using connection_aborted. Please not that session is closed |
1103 | * and should not be reopened. |
1104 | * @return no return or void, script execution stopped unless $dontdie is true |
172dd12c |
1105 | */ |
b379f7d9 |
1106 | function send_stored_file($stored_file, $lifetime=86400 , $filter=0, $forcedownload=false, $filename=null, $dontdie=false) { |
172dd12c |
1107 | global $CFG, $COURSE, $SESSION; |
1108 | |
b379f7d9 |
1109 | if ($dontdie) { |
15325f55 |
1110 | ignore_user_abort(true); |
b379f7d9 |
1111 | } |
1112 | |
172dd12c |
1113 | session_write_close(); // unlock session during fileserving |
1114 | |
1115 | // Use given MIME type if specified, otherwise guess it using mimeinfo. |
1116 | // IE, Konqueror and Opera open html file directly in browser from web even when directed to save it to disk :-O |
1117 | // only Firefox saves all files locally before opening when content-disposition: attachment stated |
1118 | $filename = is_null($filename) ? $stored_file->get_filename() : $filename; |
1119 | $isFF = check_browser_version('Firefox', '1.5'); // only FF > 1.5 properly tested |
1120 | $mimetype = ($forcedownload and !$isFF) ? 'application/x-forcedownload' : |
1121 | ($stored_file->get_mimetype() ? $stored_file->get_mimetype() : mimeinfo('type', $filename)); |
1122 | $lastmodified = $stored_file->get_timemodified(); |
1123 | $filesize = $stored_file->get_filesize(); |
1124 | |
1125 | //IE compatibiltiy HACK! |
1126 | if (ini_get('zlib.output_compression')) { |
1127 | ini_set('zlib.output_compression', 'Off'); |
1128 | } |
1129 | |
1130 | //try to disable automatic sid rewrite in cookieless mode |
1131 | @ini_set("session.use_trans_sid", "false"); |
1132 | |
1133 | //do not put '@' before the next header to detect incorrect moodle configurations, |
1134 | //error should be better than "weird" empty lines for admins/users |
1135 | //TODO: should we remove all those @ before the header()? Are all of the values supported on all servers? |
1136 | header('Last-Modified: '. gmdate('D, d M Y H:i:s', $lastmodified) .' GMT'); |
1137 | |
1138 | // if user is using IE, urlencode the filename so that multibyte file name will show up correctly on popup |
1139 | if (check_browser_version('MSIE')) { |
1140 | $filename = rawurlencode($filename); |
1141 | } |
1142 | |
1143 | if ($forcedownload) { |
1144 | @header('Content-Disposition: attachment; filename="'.$filename.'"'); |
1145 | } else { |
1146 | @header('Content-Disposition: inline; filename="'.$filename.'"'); |
1147 | } |
1148 | |
1149 | if ($lifetime > 0) { |
1150 | @header('Cache-Control: max-age='.$lifetime); |
1151 | @header('Expires: '. gmdate('D, d M Y H:i:s', time() + $lifetime) .' GMT'); |
1152 | @header('Pragma: '); |
1153 | |
1154 | if (empty($CFG->disablebyteserving) && $mimetype != 'text/plain' && $mimetype != 'text/html') { |
1155 | |
1156 | @header('Accept-Ranges: bytes'); |
1157 | |
1158 | if (!empty($_SERVER['HTTP_RANGE']) && strpos($_SERVER['HTTP_RANGE'],'bytes=') !== FALSE) { |
1159 | // byteserving stuff - for acrobat reader and download accelerators |
1160 | // see: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35 |
1161 | // inspired by: http://www.coneural.org/florian/papers/04_byteserving.php |
1162 | $ranges = false; |
1163 | if (preg_match_all('/(\d*)-(\d*)/', $_SERVER['HTTP_RANGE'], $ranges, PREG_SET_ORDER)) { |
1164 | foreach ($ranges as $key=>$value) { |
1165 | if ($ranges[$key][1] == '') { |
1166 | //suffix case |
1167 | $ranges[$key][1] = $filesize - $ranges[$key][2]; |
1168 | $ranges[$key][2] = $filesize - 1; |
1169 | } else if ($ranges[$key][2] == '' || $ranges[$key][2] > $filesize - 1) { |
1170 | //fix range length |
1171 | $ranges[$key][2] = $filesize - 1; |
1172 | } |
1173 | if ($ranges[$key][2] != '' && $ranges[$key][2] < $ranges[$key][1]) { |
1174 | //invalid byte-range ==> ignore header |
1175 | $ranges = false; |
1176 | break; |
1177 | } |
1178 | //prepare multipart header |
1179 | $ranges[$key][0] = "\r\n--".BYTESERVING_BOUNDARY."\r\nContent-Type: $mimetype\r\n"; |
1180 | $ranges[$key][0] .= "Content-Range: bytes {$ranges[$key][1]}-{$ranges[$key][2]}/$filesize\r\n\r\n"; |
1181 | } |
1182 | } else { |
1183 | $ranges = false; |
1184 | } |
1185 | if ($ranges) { |
1186 | byteserving_send_file($stored_file->get_content_file_handle(), $mimetype, $ranges, $filesize); |
1187 | } |
1188 | } |
1189 | } else { |
1190 | /// Do not byteserve (disabled, strings, text and html files). |
1191 | @header('Accept-Ranges: none'); |
1192 | } |
1193 | } else { // Do not cache files in proxies and browsers |
1194 | if (strpos($CFG->wwwroot, 'https://') === 0) { //https sites - watch out for IE! KB812935 and KB316431 |
1195 | @header('Cache-Control: max-age=10'); |
1196 | @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); |
1197 | @header('Pragma: '); |
1198 | } else { //normal http - prevent caching at all cost |
1199 | @header('Cache-Control: private, must-revalidate, pre-check=0, post-check=0, max-age=0'); |
1200 | @header('Expires: '. gmdate('D, d M Y H:i:s', 0) .' GMT'); |
1201 | @header('Pragma: no-cache'); |
1202 | } |
1203 | @header('Accept-Ranges: none'); // Do not allow byteserving when caching disabled |
1204 | } |
1205 | |
1206 | if (empty($filter)) { |
1207 | $filtered = false; |
1208 | if ($mimetype == 'text/html' && !empty($CFG->usesid) && empty($_COOKIE['MoodleSession'.$CFG->sessioncookie])) { |
1209 | //cookieless mode - rewrite links |
1210 | @header('Content-Type: text/html'); |
1211 | $text = $stored_file->get_content(); |
1212 | $text = $SESSION->sid_ob_rewrite($text); |
1213 | $filesize = strlen($text); |
1214 | $filtered = true; |
1215 | } else if ($mimetype == 'text/plain') { |
1216 | @header('Content-Type: Text/plain; charset=utf-8'); //add encoding |
1217 | } else { |
1218 | @header('Content-Type: '.$mimetype); |
1219 | } |
1220 | @header('Content-Length: '.$filesize); |
1221 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
1222 | if ($filtered) { |
1223 | echo $text; |
1224 | } else { |
1225 | $stored_file->readfile(); |
1226 | } |
1227 | |
1228 | } else { // Try to put the file through filters |
1229 | if ($mimetype == 'text/html') { |
1230 | $options = new object(); |
1231 | $options->noclean = true; |
1232 | $options->nocache = true; // temporary workaround for MDL-5136 |
1233 | $text = $stored_file->get_content(); |
1234 | $text = file_modify_html_header($text); |
1235 | $output = format_text($text, FORMAT_HTML, $options, $COURSE->id); |
1236 | if (!empty($CFG->usesid) && empty($_COOKIE['MoodleSession'.$CFG->sessioncookie])) { |
1237 | //cookieless mode - rewrite links |
1238 | $output = $SESSION->sid_ob_rewrite($output); |
1239 | } |
1240 | |
1241 | @header('Content-Length: '.strlen($output)); |
1242 | @header('Content-Type: text/html'); |
1243 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
1244 | echo $output; |
1245 | // only filter text if filter all files is selected |
1246 | } else if (($mimetype == 'text/plain') and ($filter == 1)) { |
1247 | $options = new object(); |
1248 | $options->newlines = false; |
1249 | $options->noclean = true; |
1250 | $text = $stored_file->get_content(); |
1251 | $output = '<pre>'. format_text($text, FORMAT_MOODLE, $options, $COURSE->id) .'</pre>'; |
1252 | if (!empty($CFG->usesid) && empty($_COOKIE['MoodleSession'.$CFG->sessioncookie])) { |
1253 | //cookieless mode - rewrite links |
1254 | $output = $SESSION->sid_ob_rewrite($output); |
1255 | } |
1256 | |
1257 | @header('Content-Length: '.strlen($output)); |
1258 | @header('Content-Type: text/html; charset=utf-8'); //add encoding |
1259 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
1260 | echo $output; |
1261 | } else { // Just send it out raw |
1262 | @header('Content-Length: '.$filesize); |
1263 | @header('Content-Type: '.$mimetype); |
1264 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
1265 | $stored_file->readfile(); |
1266 | } |
1267 | } |
b379f7d9 |
1268 | if ($dontdie) { |
1269 | return; |
1270 | } |
172dd12c |
1271 | die; //no more chars to output!!! |
1272 | } |
1273 | |
a43b5308 |
1274 | function get_records_csv($file, $table) { |
f33e1ed4 |
1275 | global $CFG, $DB; |
599f38f9 |
1276 | |
f33e1ed4 |
1277 | if (!$metacolumns = $DB->get_columns($table)) { |
599f38f9 |
1278 | return false; |
1279 | } |
1280 | |
a77b98eb |
1281 | if(!($handle = @fopen($file, 'r'))) { |
5a2a5331 |
1282 | print_error('get_records_csv failed to open '.$file); |
599f38f9 |
1283 | } |
1284 | |
1285 | $fieldnames = fgetcsv($handle, 4096); |
1286 | if(empty($fieldnames)) { |
1287 | fclose($handle); |
1288 | return false; |
1289 | } |
1290 | |
1291 | $columns = array(); |
1292 | |
1293 | foreach($metacolumns as $metacolumn) { |
1294 | $ord = array_search($metacolumn->name, $fieldnames); |
1295 | if(is_int($ord)) { |
1296 | $columns[$metacolumn->name] = $ord; |
1297 | } |
1298 | } |
1299 | |
1300 | $rows = array(); |
1301 | |
1302 | while (($data = fgetcsv($handle, 4096)) !== false) { |
1303 | $item = new stdClass; |
1304 | foreach($columns as $name => $ord) { |
1305 | $item->$name = $data[$ord]; |
1306 | } |
1307 | $rows[] = $item; |
1308 | } |
1309 | |
1310 | fclose($handle); |
1311 | return $rows; |
1312 | } |
1313 | |
a77b98eb |
1314 | function put_records_csv($file, $records, $table = NULL) { |
f33e1ed4 |
1315 | global $CFG, $DB; |
a77b98eb |
1316 | |
a1e93da2 |
1317 | if (empty($records)) { |
a77b98eb |
1318 | return true; |
1319 | } |
1320 | |
1321 | $metacolumns = NULL; |
f33e1ed4 |
1322 | if ($table !== NULL && !$metacolumns = $DB->get_columns($table)) { |
a77b98eb |
1323 | return false; |
1324 | } |
1325 | |
a1e93da2 |
1326 | echo "x"; |
1327 | |
a77b98eb |
1328 | if(!($fp = @fopen($CFG->dataroot.'/temp/'.$file, 'w'))) { |
5a2a5331 |
1329 | print_error('put_records_csv failed to open '.$file); |
a77b98eb |
1330 | } |
1331 | |
a43b5308 |
1332 | $proto = reset($records); |
1333 | if(is_object($proto)) { |
1334 | $fields_records = array_keys(get_object_vars($proto)); |
1335 | } |
1336 | else if(is_array($proto)) { |
1337 | $fields_records = array_keys($proto); |
1338 | } |
1339 | else { |
1340 | return false; |
1341 | } |
a1e93da2 |
1342 | echo "x"; |
a77b98eb |
1343 | |
1344 | if(!empty($metacolumns)) { |
1345 | $fields_table = array_map(create_function('$a', 'return $a->name;'), $metacolumns); |
1346 | $fields = array_intersect($fields_records, $fields_table); |
1347 | } |
1348 | else { |
1349 | $fields = $fields_records; |
1350 | } |
1351 | |
1352 | fwrite($fp, implode(',', $fields)); |
1353 | fwrite($fp, "\r\n"); |
1354 | |
1355 | foreach($records as $record) { |
a43b5308 |
1356 | $array = (array)$record; |
a77b98eb |
1357 | $values = array(); |
1358 | foreach($fields as $field) { |
a43b5308 |
1359 | if(strpos($array[$field], ',')) { |
1360 | $values[] = '"'.str_replace('"', '\"', $array[$field]).'"'; |
a77b98eb |
1361 | } |
1362 | else { |
a43b5308 |
1363 | $values[] = $array[$field]; |
a77b98eb |
1364 | } |
1365 | } |
1366 | fwrite($fp, implode(',', $values)."\r\n"); |
1367 | } |
1368 | |
1369 | fclose($fp); |
1370 | return true; |
1371 | } |
1372 | |
f401cc97 |
1373 | |
34763a79 |
1374 | /** |
76ca1ff1 |
1375 | * Recursively delete the file or folder with path $location. That is, |
34763a79 |
1376 | * if it is a file delete it. If it is a folder, delete all its content |
76ca1ff1 |
1377 | * then delete it. If $location does not exist to start, that is not |
1378 | * considered an error. |
1379 | * |
34763a79 |
1380 | * @param $location the path to remove. |
1381 | */ |
4c8c65ec |
1382 | function fulldelete($location) { |
f401cc97 |
1383 | if (is_dir($location)) { |
1384 | $currdir = opendir($location); |
1385 | while (false !== ($file = readdir($currdir))) { |
1386 | if ($file <> ".." && $file <> ".") { |
1387 | $fullfile = $location."/".$file; |
4c8c65ec |
1388 | if (is_dir($fullfile)) { |
f401cc97 |
1389 | if (!fulldelete($fullfile)) { |
1390 | return false; |
1391 | } |
1392 | } else { |
1393 | if (!unlink($fullfile)) { |
1394 | return false; |
1395 | } |
4c8c65ec |
1396 | } |
f401cc97 |
1397 | } |
4c8c65ec |
1398 | } |
f401cc97 |
1399 | closedir($currdir); |
1400 | if (! rmdir($location)) { |
1401 | return false; |
1402 | } |
1403 | |
34763a79 |
1404 | } else if (file_exists($location)) { |
f401cc97 |
1405 | if (!unlink($location)) { |
1406 | return false; |
1407 | } |
1408 | } |
1409 | return true; |
1410 | } |
1411 | |
4c8c65ec |
1412 | /** |
1413 | * Send requested byterange of file. |
1414 | */ |
172dd12c |
1415 | function byteserving_send_file($handle, $mimetype, $ranges, $filesize) { |
4c8c65ec |
1416 | $chunksize = 1*(1024*1024); // 1MB chunks - must be less than 2MB! |
4c8c65ec |
1417 | if ($handle === false) { |
1418 | die; |
1419 | } |
1420 | if (count($ranges) == 1) { //only one range requested |
1421 | $length = $ranges[0][2] - $ranges[0][1] + 1; |
1422 | @header('HTTP/1.1 206 Partial content'); |
1423 | @header('Content-Length: '.$length); |
172dd12c |
1424 | @header('Content-Range: bytes '.$ranges[0][1].'-'.$ranges[0][2].'/'.$filesize); |
4c8c65ec |
1425 | @header('Content-Type: '.$mimetype); |
1426 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
1427 | $buffer = ''; |
1428 | fseek($handle, $ranges[0][1]); |
1429 | while (!feof($handle) && $length > 0) { |
68913aec |
1430 | @set_time_limit(60*60); //reset time limit to 60 min - should be enough for 1 MB chunk |
4c8c65ec |
1431 | $buffer = fread($handle, ($chunksize < $length ? $chunksize : $length)); |
1432 | echo $buffer; |
1433 | flush(); |
1434 | $length -= strlen($buffer); |
1435 | } |
1436 | fclose($handle); |
1437 | die; |
1438 | } else { // multiple ranges requested - not tested much |
1439 | $totallength = 0; |
1440 | foreach($ranges as $range) { |
aba588a7 |
1441 | $totallength += strlen($range[0]) + $range[2] - $range[1] + 1; |
4c8c65ec |
1442 | } |
aba588a7 |
1443 | $totallength += strlen("\r\n--".BYTESERVING_BOUNDARY."--\r\n"); |
4c8c65ec |
1444 | @header('HTTP/1.1 206 Partial content'); |
1445 | @header('Content-Length: '.$totallength); |
1446 | @header('Content-Type: multipart/byteranges; boundary='.BYTESERVING_BOUNDARY); |
1447 | //TODO: check if "multipart/x-byteranges" is more compatible with current readers/browsers/servers |
1448 | while (@ob_end_flush()); //flush the buffers - save memory and disable sid rewrite |
1449 | foreach($ranges as $range) { |
1450 | $length = $range[2] - $range[1] + 1; |
1451 | echo $range[0]; |
1452 | $buffer = ''; |
1453 | fseek($handle, $range[1]); |
1454 | while (!feof($handle) && $length > 0) { |
68913aec |
1455 | @set_time_limit(60*60); //reset time limit to 60 min - should be enough for 1 MB chunk |
4c8c65ec |
1456 | $buffer = fread($handle, ($chunksize < $length ? $chunksize : $length)); |
1457 | echo $buffer; |
1458 | flush(); |
1459 | $length -= strlen($buffer); |
1460 | } |
1461 | } |
1462 | echo "\r\n--".BYTESERVING_BOUNDARY."--\r\n"; |
1463 | fclose($handle); |
1464 | die; |
1465 | } |
1466 | } |
f401cc97 |
1467 | |
3ace5ee4 |
1468 | /** |
1469 | * add includes (js and css) into uploaded files |
1470 | * before returning them, useful for themes and utf.js includes |
1471 | * @param string text - text to search and replace |
1472 | * @return string - text with added head includes |
1473 | */ |
1474 | function file_modify_html_header($text) { |
1475 | // first look for <head> tag |
1476 | global $CFG; |
76ca1ff1 |
1477 | |
3ace5ee4 |
1478 | $stylesheetshtml = ''; |
1479 | foreach ($CFG->stylesheets as $stylesheet) { |
1480 | $stylesheetshtml .= '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'" />'."\n"; |
76ca1ff1 |
1481 | } |
1482 | |
3ace5ee4 |
1483 | $filters = explode(",", $CFG->textfilters); |
1484 | if (in_array('filter/mediaplugin', $filters)) { |
76ca1ff1 |
1485 | // this script is needed by most media filter plugins. |
1486 | $ufo = "\n".'<script type="text/javascript" src="'.$CFG->wwwroot.'/lib/ufo.js"></script>'."\n"; |
3ace5ee4 |
1487 | } else { |
76ca1ff1 |
1488 | $ufo = ''; |
3ace5ee4 |
1489 | } |
76ca1ff1 |
1490 | |
3ace5ee4 |
1491 | preg_match('/\<head\>|\<HEAD\>/', $text, $matches); |
1492 | if ($matches) { |
1493 | $replacement = '<head>'.$ufo.$stylesheetshtml; |
1494 | $text = preg_replace('/\<head\>|\<HEAD\>/', $replacement, $text, 1); |
76ca1ff1 |
1495 | return $text; |
3ace5ee4 |
1496 | } |
76ca1ff1 |
1497 | |
3ace5ee4 |
1498 | // if not, look for <html> tag, and stick <head> right after |
1499 | preg_match('/\<html\>|\<HTML\>/', $text, $matches); |
1500 | if ($matches) { |
1501 | // replace <html> tag with <html><head>includes</head> |
13534ef7 |
1502 | $replacement = '<html>'."\n".'<head>'.$ufo.$stylesheetshtml.'</head>'; |
3ace5ee4 |
1503 | $text = preg_replace('/\<html\>|\<HTML\>/', $replacement, $text, 1); |
76ca1ff1 |
1504 | return $text; |
3ace5ee4 |
1505 | } |
76ca1ff1 |
1506 | |
3ace5ee4 |
1507 | // if not, look for <body> tag, and stick <head> before body |
1508 | preg_match('/\<body\>|\<BODY\>/', $text, $matches); |
1509 | if ($matches) { |
13534ef7 |
1510 | $replacement = '<head>'.$ufo.$stylesheetshtml.'</head>'."\n".'<body>'; |
3ace5ee4 |
1511 | $text = preg_replace('/\<body\>|\<BODY\>/', $replacement, $text, 1); |
76ca1ff1 |
1512 | return $text; |
1513 | } |
1514 | |
3ace5ee4 |
1515 | // if not, just stick a <head> tag at the beginning |
1516 | $text = '<head>'.$ufo.$stylesheetshtml.'</head>'."\n".$text; |
1517 | return $text; |
1518 | } |
1519 | |
bb2c046d |
1520 | /** |
1521 | * RESTful cURL class |
1522 | * |
1523 | * This is a wrapper class for curl, it is quite easy to use: |
1524 | * |
1525 | * $c = new curl; |
1526 | * // enable cache |
1527 | * $c = new curl(array('cache'=>true)); |
1528 | * // enable cookie |
1529 | * $c = new curl(array('cookie'=>true)); |
1530 | * // enable proxy |
1531 | * $c = new curl(array('proxy'=>true)); |
1532 | * |
1533 | * // HTTP GET Method |
1534 | * $html = $c->get('http://example.com'); |
1535 | * // HTTP POST Method |
1536 | * $html = $c->post('http://example.com/', array('q'=>'words', 'name'=>'moodle')); |
1537 | * // HTTP PUT Method |
1538 | * $html = $c->put('http://example.com/', array('file'=>'/var/www/test.txt'); |
1539 | * |
1540 | * @author Dongsheng Cai <dongsheng@cvs.moodle.org> |
1541 | * @version 0.4 dev |
1542 | * @license http://www.gnu.org/copyleft/gpl.html GNU Public License |
1543 | */ |
1544 | |
1545 | class curl { |
1546 | public $cache = false; |
1547 | public $proxy = false; |
1548 | public $version = '0.4 dev'; |
1549 | public $response = array(); |
1550 | public $header = array(); |
1551 | public $info; |
1552 | public $error; |
1553 | |
1554 | private $options; |
1555 | private $proxy_host = ''; |
1556 | private $proxy_auth = ''; |
1557 | private $proxy_type = ''; |
1558 | private $debug = false; |
1559 | private $cookie = false; |
1560 | |
1561 | public function __construct($options = array()){ |
1562 | global $CFG; |
1563 | if (!function_exists('curl_init')) { |
1564 | $this->error = 'cURL module must be enabled!'; |
1565 | trigger_error($this->error, E_USER_ERROR); |
1566 | return false; |
1567 | } |
1568 | // the options of curl should be init here. |
1569 | $this->resetopt(); |
1570 | if (!empty($options['debug'])) { |
1571 | $this->debug = true; |
1572 | } |
1573 | if(!empty($options['cookie'])) { |
1574 | if($options['cookie'] === true) { |
1575 | $this->cookie = $CFG->dataroot.'/curl_cookie.txt'; |
1576 | } else { |
1577 | $this->cookie = $options['cookie']; |
1578 | } |
1579 | } |
1580 | if (!empty($options['cache'])) { |
1581 | if (class_exists('curl_cache')) { |
1582 | $this->cache = new curl_cache; |
1583 | } |
1584 | } |
1585 | if (!empty($options['proxy'])) { |
1586 | if (!empty($CFG->proxyhost)) { |
1587 | if (empty($CFG->proxyport)) { |
1588 | $this->proxy_host = $CFG->proxyhost; |
1589 | } else { |
1590 | $this->proxy_host = $CFG->proxyhost.':'.$CFG->proxyport; |
1591 | } |
1592 | if (!empty($CFG->proxyuser) and !empty($CFG->proxypassword)) { |
1593 | $this->proxy_auth = $CFG->proxyuser.':'.$CFG->proxypassword; |
1594 | $this->setopt(array( |
1595 | 'proxyauth'=> CURLAUTH_BASIC | CURLAUTH_NTLM, |
1596 | 'proxyuserpwd'=>$this->proxy_auth)); |
1597 | } |
1598 | if (!empty($CFG->proxytype)) { |
1599 | if ($CFG->proxytype == 'SOCKS5') { |
1600 | $this->proxy_type = CURLPROXY_SOCKS5; |
1601 | } else { |
1602 | $this->proxy_type = CURLPROXY_HTTP; |
1603 | $this->setopt(array('httpproxytunnel'=>true)); |
1604 | } |
1605 | $this->setopt(array('proxytype'=>$this->proxy_type)); |
1606 | } |
1607 | } |
1608 | if (!empty($this->proxy_host)) { |
1609 | $this->proxy = array('proxy'=>$this->proxy_host); |
1610 | } |
1611 | } |
1612 | } |
1613 | public function resetopt(){ |
1614 | $this->options = array(); |
1615 | $this->options['CURLOPT_USERAGENT'] = 'MoodleBot/1.0'; |
1616 | // True to include the header in the output |
1617 | $this->options['CURLOPT_HEADER'] = 0; |
1618 | // True to Exclude the body from the output |
1619 | $this->options['CURLOPT_NOBODY'] = 0; |
1620 | // TRUE to follow any "Location: " header that the server |
1621 | // sends as part of the HTTP header (note this is recursive, |
1622 | // PHP will follow as many "Location: " headers that it is sent, |
1623 | // unless CURLOPT_MAXREDIRS is set). |
1624 | $this->options['CURLOPT_FOLLOWLOCATION'] = 1; |
1625 | $this->options['CURLOPT_MAXREDIRS'] = 10; |
1626 | $this->options['CURLOPT_ENCODING'] = ''; |
1627 | // TRUE to return the transfer as a string of the return |
1628 | // value of curl_exec() instead of outputting it out directly. |
1629 | $this->options['CURLOPT_RETURNTRANSFER'] = 1; |
1630 | $this->options['CURLOPT_BINARYTRANSFER'] = 0; |
1631 | $this->options['CURLOPT_SSL_VERIFYPEER'] = 0; |
1632 | $this->options['CURLOPT_SSL_VERIFYHOST'] = 2; |
6135bd45 |
1633 | $this->options['CURLOPT_CONNECTTIMEOUT'] = 30; |
bb2c046d |
1634 | } |
1635 | |
1636 | /** |
1637 | * Reset Cookie |
1638 | * |
1639 | * @param array $options If array is null, this function will |
1640 | * reset the options to default value. |
1641 | * |
1642 | */ |
1643 | public function resetcookie() { |
1644 | if (!empty($this->cookie)) { |
1645 | if (is_file($this->cookie)) { |
1646 | $fp = fopen($this->cookie, 'w'); |
1647 | if (!empty($fp)) { |
1648 | fwrite($fp, ''); |
1649 | fclose($fp); |
1650 | } |
1651 | } |
1652 | } |
1653 | } |
1654 | |
1655 | /** |
1656 | * Set curl options |
1657 | * |
1658 | * @param array $options If array is null, this function will |
1659 | * reset the options to default value. |
1660 | * |
1661 | */ |
1662 | public function setopt($options = array()) { |
1663 | if (is_array($options)) { |
1664 | foreach($options as $name => $val){ |
1665 | if (stripos($name, 'CURLOPT_') === false) { |
1666 | $name = strtoupper('CURLOPT_'.$name); |
1667 | } |
1668 | $this->options[$name] = $val; |
1669 | } |
1670 | } |
1671 | } |
1672 | /** |
1673 | * Reset http method |
1674 | * |
1675 | */ |
1676 | public function cleanopt(){ |
1677 | unset($this->options['CURLOPT_HTTPGET']); |
1678 | unset($this->options['CURLOPT_POST']); |
1679 | unset($this->options['CURLOPT_POSTFIELDS']); |
1680 | unset($this->options['CURLOPT_PUT']); |
1681 | unset($this->options['CURLOPT_INFILE']); |
1682 | unset($this->options['CURLOPT_INFILESIZE']); |
1683 | unset($this->options['CURLOPT_CUSTOMREQUEST']); |
1684 | } |
1685 | |
1686 | /** |
1687 | * Set HTTP Request Header |
1688 | * |
1689 | * @param array $headers |
1690 | * |
1691 | */ |
1692 | public function setHeader($header) { |
1693 | if (is_array($header)){ |
1694 | foreach ($header as $v) { |
1695 | $this->setHeader($v); |
1696 | } |
1697 | } else { |
1698 | $this->header[] = $header; |
1699 | } |
1700 | } |
1701 | /** |
1702 | * Set HTTP Response Header |
1703 | * |
1704 | */ |
1705 | public function getResponse(){ |
1706 | return $this->response; |
1707 | } |
1708 | /** |
1709 | * private callback function |
1710 | * Formatting HTTP Response Header |
1711 | * |
1712 | */ |
1713 | private function formatHeader($ch, $header) |
1714 | { |
1715 | $this->count++; |
1716 | if (strlen($header) > 2) { |
1717 | list($key, $value) = explode(" ", rtrim($header, "\r\n"), 2); |
1718 | $key = rtrim($key, ':'); |
1719 | if (!empty($this->response[$key])) { |
1720 | if (is_array($this->response[$key])){ |
1721 | $this->response[$key][] = $value; |
1722 | } else { |
1723 | $tmp = $this->response[$key]; |
1724 | $this->response[$key] = array(); |
1725 | $this->response[$key][] = $tmp; |
1726 | $this->response[$key][] = $value; |
1727 | |
1728 | } |
1729 | } else { |
1730 | $this->response[$key] = $value; |
1731 | } |
1732 | } |
1733 | return strlen($header); |
1734 | } |
1735 | |
1736 | /** |
1737 | * Set options for individual curl instance |
1738 | */ |
1739 | private function apply_opt($curl, $options) { |
1740 | // Clean up |
1741 | $this->cleanopt(); |
1742 | // set cookie |
1743 | if (!empty($this->cookie) || !empty($options['cookie'])) { |
1744 | $this->setopt(array('cookiejar'=>$this->cookie, |
1745 | 'cookiefile'=>$this->cookie |
1746 | )); |
1747 | } |
1748 | |
1749 | // set proxy |
1750 | if (!empty($this->proxy) || !empty($options['proxy'])) { |
1751 | $this->setopt($this->proxy); |
1752 | } |
1753 | $this->setopt($options); |
1754 | // reset before set options |
1755 | curl_setopt($curl, CURLOPT_HEADERFUNCTION, array(&$this,'formatHeader')); |
1756 | // set headers |
1757 | if (empty($this->header)){ |
1758 | $this->setHeader(array( |
1759 | 'User-Agent: MoodleBot/1.0', |
1760 | 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7', |
1761 | 'Connection: keep-alive' |
1762 | )); |
1763 | } |
1764 | curl_setopt($curl, CURLOPT_HTTPHEADER, $this->header); |
1765 | |
1766 | if ($this->debug){ |
1767 | echo '<h1>Options</h1>'; |
1768 | var_dump($this->options); |
1769 | echo '<h1>Header</h1>'; |
1770 | var_dump($this->header); |
1771 | } |
1772 | |
1773 | // set options |
1774 | foreach($this->options as $name => $val) { |
1775 | if (is_string($name)) { |
1776 | $name = constant(strtoupper($name)); |
1777 | } |
1778 | curl_setopt($curl, $name, $val); |
1779 | } |
1780 | return $curl; |
1781 | } |
1782 | /* |
1783 | * Download multiple files in parallel |
1784 | * $c = new curl; |
1785 | * $c->download(array( |
172dd12c |
1786 | * array('url'=>'http://localhost/', 'file'=>fopen('a', 'wb')), |
bb2c046d |
1787 | * array('url'=>'http://localhost/20/', 'file'=>fopen('b', 'wb')) |
1788 | * )); |
1789 | */ |
1790 | public function download($requests, $options = array()) { |
1791 | $options['CURLOPT_BINARYTRANSFER'] = 1; |
1792 | $options['RETURNTRANSFER'] = false; |
1793 | return $this->multi($requests, $options); |
1794 | } |
1795 | /* |
1796 | * Mulit HTTP Requests |
1797 | * This function could run multi-requests in parallel. |
1798 | */ |
1799 | protected function multi($requests, $options = array()) { |
1800 | $count = count($requests); |
1801 | $handles = array(); |
1802 | $results = array(); |
1803 | $main = curl_multi_init(); |
1804 | for ($i = 0; $i < $count; $i++) { |
1805 | $url = $requests[$i]; |
1806 | foreach($url as $n=>$v){ |
1807 | $options[$n] = $url[$n]; |
1808 | } |
1809 | $handles[$i] = curl_init($url['url']); |
1810 | $this->apply_opt($handles[$i], $options); |
1811 | curl_multi_add_handle($main, $handles[$i]); |
1812 | } |
1813 | $running = 0; |
1814 | do { |
1815 | curl_multi_exec($main, $running); |
1816 | } while($running > 0); |
1817 | for ($i = 0; $i < $count; $i++) { |
1818 | if (!empty($optins['CURLOPT_RETURNTRANSFER'])) { |
1819 | $results[] = true; |
1820 | } else { |
1821 | $results[] = curl_multi_getcontent($handles[$i]); |
1822 | } |
1823 | curl_multi_remove_handle($main, $handles[$i]); |
1824 | } |
1825 | curl_multi_close($main); |
1826 | return $results; |
1827 | } |
1828 | /** |
1829 | * Single HTTP Request |
1830 | */ |
1831 | protected function request($url, $options = array()){ |
1832 | // create curl instance |
1833 | $curl = curl_init($url); |
1834 | $options['url'] = $url; |
1835 | $this->apply_opt($curl, $options); |
1836 | if ($this->cache && $ret = $this->cache->get($this->options)) { |
1837 | return $ret; |
1838 | } else { |
6135bd45 |
1839 | $ret = curl_exec($curl); |
bb2c046d |
1840 | if ($this->cache) { |
1841 | $this->cache->set($this->options, $ret); |
1842 | } |
1843 | } |
1844 | |
1845 | $this->info = curl_getinfo($curl); |
1846 | $this->error = curl_error($curl); |
1847 | |
1848 | if ($this->debug){ |
1849 | echo '<h1>Return Data</h1>'; |
1850 | var_dump($ret); |
1851 | echo '<h1>Info</h1>'; |
1852 | var_dump($this->info); |
1853 | echo '<h1>Error</h1>'; |
1854 | var_dump($this->error); |
1855 | } |
1856 | |
1857 | curl_close($curl); |
1858 | |
6135bd45 |
1859 | if (empty($this->error)){ |
bb2c046d |
1860 | return $ret; |
1861 | } else { |
6135bd45 |
1862 | throw new moodle_exception($this->error, 'curl'); |
bb2c046d |
1863 | } |
1864 | } |
1865 | |
1866 | /** |
1867 | * HTTP HEAD method |
1868 | */ |
1869 | public function head($url, $options = array()){ |
1870 | $options['CURLOPT_HTTPGET'] = 0; |
1871 | $options['CURLOPT_HEADER'] = 1; |
1872 | $options['CURLOPT_NOBODY'] = 1; |
1873 | return $this->request($url, $options); |
1874 | } |
1875 | |
1876 | /** |
1877 | * HTTP POST method |
1878 | */ |
1879 | public function post($url, $params = array(), $options = array()){ |
1880 | $options['CURLOPT_POST'] = 1; |
5035a8b4 |
1881 | $this->_tmp_file_post_params = array(); |
1882 | foreach ($params as $key => $value) { |
1883 | if ($value instanceof stored_file) { |
1884 | $value->add_to_curl_request($this, $key); |
1885 | } else { |
1886 | $this->_tmp_file_post_params[$key] = $value; |
1887 | } |
1888 | } |
1889 | $options['CURLOPT_POSTFIELDS'] = $this->_tmp_file_post_params; |
1890 | unset($this->_tmp_file_post_params); |
bb2c046d |
1891 | return $this->request($url, $options); |
1892 | } |
1893 | |
1894 | /** |
1895 | * HTTP GET method |
1896 | */ |
1897 | public function get($url, $params = array(), $options = array()){ |
1898 | $options['CURLOPT_HTTPGET'] = 1; |
1899 | |
1900 | if (!empty($params)){ |
1901 | $url .= (stripos($url, '?') !== false) ? '&' : '?'; |
1902 | $url .= http_build_query($params, '', '&'); |
1903 | } |
1904 | return $this->request($url, $options); |
1905 | } |
1906 | |
1907 | /** |
1908 | * HTTP PUT method |
1909 | */ |
1910 | public function put($url, $params = array(), $options = array()){ |
1911 | $file = $params['file']; |
1912 | if (!is_file($file)){ |
1913 | return null; |
1914 | } |
1915 | $fp = fopen($file, 'r'); |
1916 | $size = filesize($file); |
1917 | $options['CURLOPT_PUT'] = 1; |
1918 | $options['CURLOPT_INFILESIZE'] = $size; |
1919 | $options['CURLOPT_INFILE'] = $fp; |
1920 | if (!isset($this->options['CURLOPT_USERPWD'])){ |
1921 | $this->setopt(array('CURLOPT_USERPWD'=>'anonymous: noreply@moodle.org')); |
1922 | } |
1923 | $ret = $this->request($url, $options); |
1924 | fclose($fp); |
1925 | return $ret; |
1926 | } |
1927 | |
1928 | /** |
1929 | * HTTP DELETE method |
1930 | */ |
1931 | public function delete($url, $param = array(), $options = array()){ |
1932 | $options['CURLOPT_CUSTOMREQUEST'] = 'DELETE'; |
1933 | if (!isset($options['CURLOPT_USERPWD'])) { |
1934 | $options['CURLOPT_USERPWD'] = 'anonymous: noreply@moodle.org'; |
1935 | } |
1936 | $ret = $this->request($url, $options); |
1937 | return $ret; |
1938 | } |
1939 | /** |
1940 | * HTTP TRACE method |
1941 | */ |
1942 | public function trace($url, $options = array()){ |
1943 | $options['CURLOPT_CUSTOMREQUEST'] = 'TRACE'; |
1944 | $ret = $this->request($url, $options); |
1945 | return $ret; |
1946 | } |
1947 | /** |
1948 | * HTTP OPTIONS method |
1949 | */ |
1950 | public function options($url, $options = array()){ |
1951 | $options['CURLOPT_CUSTOMREQUEST'] = 'OPTIONS'; |
1952 | $ret = $this->request($url, $options); |
1953 | return $ret; |
1954 | } |
1955 | } |
1956 | |
1957 | /** |
1958 | * This class is used by cURL class, use case: |
1959 | * |
1960 | * $CFG->repository_cache_expire = 120; |
1961 | * $c = new curl(array('cache'=>true)); |
1962 | * $ret = $c->get('http://www.google.com'); |
1963 | * |
1964 | */ |
1965 | class curl_cache { |
1966 | public $dir = ''; |
1967 | function __construct(){ |
1968 | global $CFG; |
c9260130 |
1969 | if (!file_exists($CFG->dataroot.'/cache/repository/')) { |
1970 | mkdir($CFG->dataroot.'/cache/repository/', 0777, true); |
bb2c046d |
1971 | } |
c9260130 |
1972 | if(is_dir($CFG->dataroot.'/cache/repository/')) { |
1973 | $this->dir = $CFG->dataroot.'/cache/repository/'; |
bb2c046d |
1974 | } |
d7e122d6 |
1975 | if (empty($CFG->repository_cache_expire)) { |
1976 | $CFG->repository_cache_expire = 120; |
b933a139 |
1977 | } |
bb2c046d |
1978 | } |
1979 | public function get($param){ |
aae85978 |
1980 | global $CFG, $USER; |
c9260130 |
1981 | $this->cleanup($CFG->repository_cache_expire); |
aae85978 |
1982 | $filename = 'u'.$USER->id.'_'.md5(serialize($param)); |
bb2c046d |
1983 | if(file_exists($this->dir.$filename)) { |
1984 | $lasttime = filemtime($this->dir.$filename); |
d7e122d6 |
1985 | if(time()-$lasttime > $CFG->repository_cache_expire) |
1986 | { |
bb2c046d |
1987 | return false; |
1988 | } else { |
1989 | $fp = fopen($this->dir.$filename, 'r'); |
1990 | $size = filesize($this->dir.$filename); |
1991 | $content = fread($fp, $size); |
1992 | return unserialize($content); |
1993 | } |
1994 | } |
1995 | return false; |
1996 | } |
1997 | public function set($param, $val){ |
aae85978 |
1998 | global $CFG, $USER; |
1999 | $filename = 'u'.$USER->id.'_'.md5(serialize($param)); |
bb2c046d |
2000 | $fp = fopen($this->dir.$filename, 'w'); |
2001 | fwrite($fp, serialize($val)); |
2002 | fclose($fp); |
2003 | } |
2004 | public function cleanup($expire){ |
2005 | if($dir = opendir($this->dir)){ |
2006 | while (false !== ($file = readdir($dir))) { |
2007 | if(!is_dir($file) && $file != '.' && $file != '..') { |
2008 | $lasttime = @filemtime($this->dir.$file); |
2009 | if(time() - $lasttime > $expire){ |
2010 | @unlink($this->dir.$file); |
2011 | } |
2012 | } |
2013 | } |
2014 | } |
2015 | } |
aae85978 |
2016 | /** |
2017 | * delete current user's cache file |
2018 | * |
2019 | * @return null |
2020 | */ |
2021 | public function refresh(){ |
2022 | global $CFG, $USER; |
2023 | if($dir = opendir($this->dir)){ |
2024 | while (false !== ($file = readdir($dir))) { |
2025 | if(!is_dir($file) && $file != '.' && $file != '..') { |
2026 | if(strpos($file, 'u'.$USER->id.'_')!==false){ |
2027 | @unlink($this->dir.$file); |
2028 | } |
2029 | } |
2030 | } |
2031 | } |
2032 | } |
bb2c046d |
2033 | } |