wpstream / streamify / streamify.php

streamify.php in WpStream – Live Streaming, Video on Demand, Pay Per View 4.9.2, at streamify/streamify.php

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1	<?php
2
3	define('WPSTREAMIFY_CACHE_DIR', WP_CONTENT_DIR . '/uploads/wpstreamify_cache/');
4
5	function wpstreamify_register_query_vars($vars) {
6	$vars[] = 'wpstreamify_path';
7	return $vars;
8	}
9	add_filter('query_vars', 'wpstreamify_register_query_vars');
10
11	function wpstreamify_proxy_handler() {
12	$path = get_query_var('wpstreamify_path');
13	if (!$path) {
14	return;
15	}
16
17	$originHost = 'https://basicstreaming.wpstream.live/';
18	$remoteUrl = $originHost . $path;
19	$cacheFile = WPSTREAMIFY_CACHE_DIR . basename($path);
20	$fileExtension = pathinfo($path, PATHINFO_EXTENSION);
21
22	if ($fileExtension === 'ts' \|\| $fileExtension === 'm3u8') {
23	wpstreamify_process_hls_request($fileExtension, $cacheFile, $remoteUrl);
24	} else {
25	wpstreamify_serve_404();
26	}
27	}
28
29	function wpstreamify_process_hls_request($fileExtension, $cacheFile, $remoteUrl) {
30	if (file_exists($cacheFile)) {
31	if ($fileExtension === 'm3u8' && wpstreamify_file_is_expired($cacheFile, 2)) {
32	if (!@unlink($cacheFile)) {
33	error_log(sprintf(
34	'wpstreamify_process_hls_request: Failed to delete expired cache file: %s',
35	$cacheFile
36	));
37	}
38	} else {
39	wpstreamify_serve_cached_file($fileExtension, $cacheFile, 'HIT');
40	exit;
41	}
42	}
43
44	$lockFile = $cacheFile . '.lock';
45	if (file_exists($lockFile)){
46	wpstreamify_wait_for_lock($lockFile, $cacheFile, $fileExtension);
47	wpstreamify_serve_cached_file($fileExtension, $cacheFile, 'WAIT');
48	exit;
49	}
50	else if (wpstreamify_fetch_and_cache_file($lockFile, $cacheFile, $remoteUrl)) {
51	wpstreamify_serve_cached_file($fileExtension, $cacheFile, 'MISS');
52	} else {
53	wpstreamify_serve_500();
54	}
55	exit;
56	}
57
58	function wpstreamify_file_is_expired($filePath, $expirySeconds) {
59	$lastModified = filemtime($filePath);
60	if ($lastModified === false) {
61	error_log(sprintf(
62	'wpstreamify_file_is_expired: Failed to retrieve last modified time for file: %s',
63	$filePath
64	));
65	return true; // Consider files with unknown modification time as expired
66	}
67	$currentTime = time();
68	return ($currentTime - $lastModified) > $expirySeconds;
69	}
70
71	function wpstreamify_wait_for_lock($lockFile, $cacheFile, $fileExtension) {
72	$cycles = 0;
73	while (file_exists($lockFile) && $cycles++ <= 200) {
74	usleep(100 * 1000);
75	}
76	if (file_exists($cacheFile)) {
77	return true;
78	}
79	else {
80	error_log(sprintf(
81	'wpstreamify_wait_for_lock: Cached file not found after waiting for lock: %s, Lock file: %s',
82	$cacheFile,
83	$lockFile
84	));
85	return false;
86	}
87	}
88
89	function wpstreamify_serve_cached_file($fileExtension, $cacheFile, $cacheStatus) {
90	header("Access-Control-Allow-Origin: *");
91	header("Access-Control-Allow-Methods: GET, OPTIONS");
92	header("Access-Control-Allow-Headers: Content-Type, Authorization");
93
94	if (!file_exists($cacheFile)) {
95	error_log(sprintf(
96	'wpstreamify_serve_cached_file: Cache file does not exist: %s',
97	$cacheFile
98	));
99	wpstreamify_serve_404();
100	exit;
101	}
102
103	if (!is_readable($cacheFile)) {
104	error_log(sprintf(
105	'wpstreamify_serve_cached_file: Cache file is not readable: %s',
106	$cacheFile
107	));
108	wpstreamify_serve_500();
109	exit;
110	}
111
112	if ($fileExtension === 'ts') {
113	header('Content-Type: video/mp2t');
114	header('Cache-Control: public, max-age=300');
115	header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 300) . ' GMT');
116	} elseif ($fileExtension === 'm3u8') {
117	header('Content-Type: application/vnd.apple.mpegurl');
118	header('Cache-Control: public, max-age=2, must-revalidate');
119	header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 2) . ' GMT');
120	}
121
122	header("WPS-Cache-Status: $cacheStatus");
123	status_header(200);
124	$lastModified = filemtime($cacheFile);
125	if ($lastModified === false) {
126	error_log(sprintf(
127	'wpstreamify_serve_cached_file: Failed to retrieve last modified time for cache file: %s',
128	$cacheFile
129	));
130	wpstreamify_serve_500();
131	exit;
132	}
133	header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $lastModified) . ' GMT');
134
135	if (!@readfile($cacheFile)) {
136	error_log(sprintf(
137	'wpstreamify_serve_cached_file: Failed to read and output cache file: %s',
138	$cacheFile
139	));
140	wpstreamify_serve_500();
141	exit;
142	}
143	}
144
145
146	function wpstreamify_fetch_and_cache_file($lockFile, $cacheFile, $remoteUrl) {
147	ignore_user_abort(true);
148
149	$lockHandle = fopen($lockFile, 'w');
150	if (!$lockHandle) {
151	error_log(sprintf(
152	'wpstreamify_fetch_and_cache_file: Failed to create or open lock file: %s',
153	$lockFile
154	));
155	return false;
156	}
157
158	if (flock($lockHandle, LOCK_EX)) {
159	try {
160	$response = wpstreamify_fetch_remote_content($remoteUrl);
161
162	if ($response === false) {
163	error_log(sprintf(
164	'wpstreamify_fetch_and_cache_file: Failed to fetch content from remote URL: %s',
165	$remoteUrl
166	));
167	} else {
168	if (file_put_contents($cacheFile, $response) === false) {
169	error_log(sprintf(
170	'wpstreamify_fetch_and_cache_file: Failed to write content to cache file: %s',
171	$cacheFile
172	));
173	}
174	}
175	} catch (Exception $e) {
176	error_log(sprintf(
177	'wpstreamify_fetch_and_cache_file: Exception during fetch and cache process. Remote URL: %s, Error: %s',
178	$remoteUrl,
179	$e->getMessage()
180	));
181	} finally {
182	flock($lockHandle, LOCK_UN);
183	fclose($lockHandle);
184	if (!@unlink($lockFile)) {
185	error_log(sprintf(
186	'wpstreamify_fetch_and_cache_file: Failed to delete lock file: %s',
187	$lockFile
188	));
189	}
190	}
191	return true;
192	}
193	else {
194	error_log(sprintf(
195	'wpstreamify_fetch_and_cache_file: Failed to acquire lock on file: %s',
196	$lockFile
197	));
198	if (!@unlink($lockFile)) {
199	error_log(sprintf(
200	'wpstreamify_fetch_and_cache_file: Failed to delete lock file after failing to acquire lock: %s',
201	$lockFile
202	));
203	}
204	return false;
205	}
206	}
207
208	function wpstreamify_serve_404() {
209	status_header(404);
210	header('HTTP/1.1 404 Not Found');
211	echo 'Resource not found...';
212	exit;
213	}
214
215	function wpstreamify_serve_500() {
216	status_header(500);
217	header('HTTP/1.1 500 Internal Server Error');
218	echo 'An unexpected error occurred.';
219	exit;
220	}
221
222	add_action('template_redirect', 'wpstreamify_proxy_handler');
223
224	function wpstreamify_fetch_remote_content($url) {
225	$ch = curl_init();
226
227	if ($ch === false) {
228	error_log(sprintf(
229	'wpstreamify_fetch_remote_content: Failed to initialize cURL for URL: %s',
230	$url
231	));
232	return false;
233	}
234
235	curl_setopt($ch, CURLOPT_URL, $url);
236	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
237	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
238	curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
239	curl_setopt($ch, CURLOPT_USERAGENT, "WpStreamIfy/1.0");
240	curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
241	curl_setopt($ch, CURLOPT_TIMEOUT, 15);
242
243	$response = curl_exec($ch);
244
245	if ($response === false) {
246	error_log(sprintf(
247	'wpstreamify_fetch_remote_content: cURL error for URL: %s. Error: %s',
248	$url,
249	curl_error($ch)
250	));
251	} else {
252	$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
253	if ($httpCode >= 400) {
254	error_log(sprintf(
255	'wpstreamify_fetch_remote_content: HTTP error for URL: %s. Status Code: %d',
256	$url,
257	$httpCode
258	));
259	$response = false;
260	}
261	}
262
263	curl_close($ch);
264	return $response;
265	}
266
267
268	define('WPSTREAMIFY_CACHE_CLEANUP_THRESHOLD', 300);
269
270	function wpstreamify_custom_cron_intervals($schedules) {
271	$schedules['every_ten_minutes'] = array(
272	'interval' => 600,
273	'display' => __('Every 10 Minutes')
274	);
275	return $schedules;
276	}
277	add_filter('cron_schedules', 'wpstreamify_custom_cron_intervals');
278
279	function wpstreamify_delete_old_hls_files() {
280	if (!defined('WPSTREAMIFY_CACHE_DIR') \|\| !is_dir(WPSTREAMIFY_CACHE_DIR)) {
281	error_log('wpstreamify_delete_old_hls_files: Cache directory is not defined or does not exist.');
282	return;
283	}
284
285	$current_time = time();
286	$files = glob(WPSTREAMIFY_CACHE_DIR . '*');
287
288	if ($files === false) {
289	error_log('wpstreamify_delete_old_hls_files: Failed to read cache directory: ' . WPSTREAMIFY_CACHE_DIR);
290	return;
291	}
292
293	foreach ($files as $file) {
294	if (is_file($file)) {
295	$file_modification_time = filemtime($file);
296	if ($file_modification_time === false) {
297	error_log(sprintf(
298	'wpstreamify_delete_old_hls_files: Failed to get modification time for file: %s',
299	$file
300	));
301	continue;
302	}
303
304	if ($current_time - $file_modification_time > WPSTREAMIFY_CACHE_CLEANUP_THRESHOLD) {
305	if (!unlink($file)) {
306	error_log(sprintf(
307	'wpstreamify_delete_old_hls_files: Failed to delete file: %s',
308	$file
309	));
310	}
311	}
312	} else {
313	error_log(sprintf(
314	'wpstreamify_delete_old_hls_files: Skipped non-file entry: %s',
315	$file
316	));
317	}
318	}
319	}
320
321
322	function wpstreamify_schedule_cleanup_event() {
323	if (!wp_next_scheduled('wpstreamify_cleanup_event')) {
324	if (!wp_schedule_event(time(), 'every_ten_minutes', 'wpstreamify_cleanup_event')) {
325	error_log('wpstreamify_schedule_cleanup_event: Failed to schedule cleanup event.');
326	}
327	}
328	}
329	add_action('wp', 'wpstreamify_schedule_cleanup_event');
330
331	add_action('wpstreamify_cleanup_event', 'wpstreamify_delete_old_hls_files');
332
333	function wpstreamify_unschedule_cleanup_event() {
334	$timestamp = wp_next_scheduled('wpstreamify_cleanup_event');
335	if ($timestamp) {
336	if (!wp_unschedule_event($timestamp, 'wpstreamify_cleanup_event')) {
337	error_log('wpstreamify_unschedule_cleanup_event: Failed to unschedule cleanup event.');
338	}
339	}
340	}
341	register_deactivation_hook(WP_PLUGIN_DIR . '/' . WPSTREAM_PLUGIN_BASE, 'wpstreamify_unschedule_cleanup_event');
342
343	function wpstreamify_add_rewrite_rules() {
344	$rewrite_rules = get_option('rewrite_rules');
345	$rule_pattern = '^wpstreamify/(.+)$';
346	$rule_target = 'index.php?wpstreamify_path=$matches[1]';
347
348	// Check if the rewrite rule already exists
349	if (!isset($rewrite_rules[$rule_pattern]) \|\| $rewrite_rules[$rule_pattern] !== $rule_target) {
350	add_rewrite_rule($rule_pattern, $rule_target, 'top');
351	flush_rewrite_rules();
352	}
353	}
354	add_action('init', 'wpstreamify_add_rewrite_rules');
355
356	function wpstreamify_flush_rewrite_rules() {
357	if (!flush_rewrite_rules()) {
358	error_log('wpstreamify_flush_rewrite_rules: Failed to flush rewrite rules.');
359	}
360	}
361	register_activation_hook(WP_PLUGIN_DIR . '/' . WPSTREAM_PLUGIN_BASE, 'wpstreamify_flush_rewrite_rules');
362	register_deactivation_hook(WP_PLUGIN_DIR . '/' . WPSTREAM_PLUGIN_BASE, 'wpstreamify_flush_rewrite_rules');
363
364	function wpstreamify_disable_hls_canonical_redirect($redirect_url, $requested_url) {
365	if (get_query_var('wpstreamify_path')) {
366	$parsed_url = parse_url($requested_url);
367
368	if ($parsed_url === false) {
369	error_log(sprintf(
370	'wpstreamify_disable_hls_canonical_redirect: Failed to parse requested URL: %s',
371	$requested_url
372	));
373	return $redirect_url;
374	}
375
376	$path = isset($parsed_url['path']) ? $parsed_url['path'] : '';
377	$fileExtension = pathinfo($path, PATHINFO_EXTENSION);
378
379	if (!$fileExtension) {
380	error_log(sprintf(
381	'wpstreamify_disable_hls_canonical_redirect: Unable to determine file extension for path: %s',
382	$path
383	));
384	return $redirect_url;
385	}
386
387	if (in_array($fileExtension, ['ts', 'm3u8'], true)) {
388	return false;
389	}
390	}
391	return $redirect_url;
392	}
393	add_filter('redirect_canonical', 'wpstreamify_disable_hls_canonical_redirect', 10, 2);
394
395
396	function wpstreamify_create_cache_dir() {
397	if (!file_exists(WPSTREAMIFY_CACHE_DIR)) {
398	if (!mkdir(WPSTREAMIFY_CACHE_DIR, 0755, true)) {
399	error_log('wpstreamify_create_cache_dir: Failed to create HLS cache directory: ' . WPSTREAMIFY_CACHE_DIR);
400	} elseif (!is_dir(WPSTREAMIFY_CACHE_DIR)) {
401	error_log('wpstreamify_create_cache_dir: Path exists but is not a directory: ' . WPSTREAMIFY_CACHE_DIR);
402	}
403	} elseif (!is_writable(WPSTREAMIFY_CACHE_DIR)) {
404	error_log('wpstreamify_create_cache_dir: Cache directory exists but is not writable: ' . WPSTREAMIFY_CACHE_DIR);
405	}
406	}
407	register_activation_hook(WP_PLUGIN_DIR . '/' . WPSTREAM_PLUGIN_BASE, 'wpstreamify_create_cache_dir');
408
409	function wpstreamify_remove_cache_dir() {
410	if (file_exists(WPSTREAMIFY_CACHE_DIR) && is_dir(WPSTREAMIFY_CACHE_DIR)) {
411	$files = array_diff(scandir(WPSTREAMIFY_CACHE_DIR), ['.', '..']);
412
413	if ($files === false) {
414	error_log('wpstreamify_remove_cache_dir: Failed to scan directory: ' . WPSTREAMIFY_CACHE_DIR);
415	return;
416	}
417
418	foreach ($files as $file) {
419	$filePath = WPSTREAMIFY_CACHE_DIR . DIRECTORY_SEPARATOR . $file;
420	if (is_file($filePath)) {
421	if (!unlink($filePath)) {
422	error_log('wpstreamify_remove_cache_dir: Failed to delete file: ' . $filePath);
423	error_log('Error: ' . json_encode(error_get_last()));
424	}
425	} elseif (is_dir($filePath)) {
426	error_log('wpstreamify_remove_cache_dir: Unexpected directory found inside cache directory: ' . $filePath);
427	} else {
428	error_log('wpstreamify_remove_cache_dir: Skipped unknown entry: ' . $filePath);
429	}
430	}
431
432	if (!rmdir(WPSTREAMIFY_CACHE_DIR)) {
433	error_log('wpstreamify_remove_cache_dir: Failed to remove directory: ' . WPSTREAMIFY_CACHE_DIR);
434	error_log('Error: ' . json_encode(error_get_last()));
435	}
436	} else {
437	error_log('wpstreamify_remove_cache_dir: Cache directory does not exist or is not a directory: ' . WPSTREAMIFY_CACHE_DIR);
438	}
439	}
440	register_deactivation_hook(WP_PLUGIN_DIR . '/' . WPSTREAM_PLUGIN_BASE, 'wpstreamify_remove_cache_dir');
441