|
1
|
<?php
|
|
2
|
|
|
3
|
/**
|
|
4
|
* @file
|
|
5
|
* Home of the FeedsHTTPFetcher and related classes.
|
|
6
|
*/
|
|
7
|
|
|
8
|
feeds_include_library('PuSHSubscriber.inc', 'PuSHSubscriber');
|
|
9
|
|
|
10
|
/**
|
|
11
|
* Result of FeedsHTTPFetcher::fetch().
|
|
12
|
*/
|
|
13
|
class FeedsHTTPFetcherResult extends FeedsFetcherResult {
|
|
14
|
|
|
15
|
/**
|
|
16
|
* The URL of the feed being fetched.
|
|
17
|
*
|
|
18
|
* @var string
|
|
19
|
*/
|
|
20
|
protected $url;
|
|
21
|
|
|
22
|
/**
|
|
23
|
* The timeout in seconds to wait for a download.
|
|
24
|
*
|
|
25
|
* @var int
|
|
26
|
*/
|
|
27
|
protected $timeout;
|
|
28
|
|
|
29
|
/**
|
|
30
|
*
|
|
31
|
* Whether to ignore SSL validation errors.
|
|
32
|
*
|
|
33
|
* @var bool
|
|
34
|
*/
|
|
35
|
protected $acceptInvalidCert;
|
|
36
|
|
|
37
|
/**
|
|
38
|
* Constructor.
|
|
39
|
*/
|
|
40
|
public function __construct($url = NULL) {
|
|
41
|
$this->url = $url;
|
|
42
|
}
|
|
43
|
|
|
44
|
/**
|
|
45
|
* Overrides FeedsFetcherResult::getRaw();
|
|
46
|
*/
|
|
47
|
public function getRaw() {
|
|
48
|
if (!isset($this->raw)) {
|
|
49
|
feeds_include_library('http_request.inc', 'http_request');
|
|
50
|
$result = http_request_get($this->url, NULL, NULL, $this->acceptInvalidCert, $this->timeout);
|
|
51
|
if (!in_array($result->code, array(200, 201, 202, 203, 204, 205, 206))) {
|
|
52
|
throw new Exception(t('Download of @url failed with code !code.', array('@url' => $this->url, '!code' => $result->code)));
|
|
53
|
}
|
|
54
|
$this->raw = $result->data;
|
|
55
|
}
|
|
56
|
|
|
57
|
return $this->sanitizeRaw($this->raw);
|
|
58
|
}
|
|
59
|
|
|
60
|
public function getTimeout() {
|
|
61
|
return $this->timeout;
|
|
62
|
}
|
|
63
|
|
|
64
|
public function setTimeout($timeout) {
|
|
65
|
$this->timeout = $timeout;
|
|
66
|
}
|
|
67
|
|
|
68
|
/**
|
|
69
|
* Sets the accept invalid certificates option.
|
|
70
|
*
|
|
71
|
* @param bool $accept_invalid_cert
|
|
72
|
* Whether to accept invalid certificates.
|
|
73
|
*/
|
|
74
|
public function setAcceptInvalidCert($accept_invalid_cert) {
|
|
75
|
$this->acceptInvalidCert = (bool) $accept_invalid_cert;
|
|
76
|
}
|
|
77
|
|
|
78
|
}
|
|
79
|
|
|
80
|
/**
|
|
81
|
* Fetches data via HTTP.
|
|
82
|
*/
|
|
83
|
class FeedsHTTPFetcher extends FeedsFetcher {
|
|
84
|
|
|
85
|
/**
|
|
86
|
* Implements FeedsFetcher::fetch().
|
|
87
|
*/
|
|
88
|
public function fetch(FeedsSource $source) {
|
|
89
|
$source_config = $source->getConfigFor($this);
|
|
90
|
if ($this->config['use_pubsubhubbub'] && ($raw = $this->subscriber($source->feed_nid)->receive())) {
|
|
91
|
return new FeedsFetcherResult($raw);
|
|
92
|
}
|
|
93
|
$fetcher_result = new FeedsHTTPFetcherResult($source_config['source']);
|
|
94
|
// When request_timeout is empty, the global value is used.
|
|
95
|
$fetcher_result->setTimeout($this->config['request_timeout']);
|
|
96
|
$fetcher_result->setAcceptInvalidCert($this->config['accept_invalid_cert']);
|
|
97
|
return $fetcher_result;
|
|
98
|
}
|
|
99
|
|
|
100
|
/**
|
|
101
|
* Clear caches.
|
|
102
|
*/
|
|
103
|
public function clear(FeedsSource $source) {
|
|
104
|
$source_config = $source->getConfigFor($this);
|
|
105
|
$url = $source_config['source'];
|
|
106
|
feeds_include_library('http_request.inc', 'http_request');
|
|
107
|
http_request_clear_cache($url);
|
|
108
|
}
|
|
109
|
|
|
110
|
/**
|
|
111
|
* Implements FeedsFetcher::request().
|
|
112
|
*/
|
|
113
|
public function request($feed_nid = 0) {
|
|
114
|
feeds_dbg($_GET);
|
|
115
|
@feeds_dbg(file_get_contents('php://input'));
|
|
116
|
// A subscription verification has been sent, verify.
|
|
117
|
if (isset($_GET['hub_challenge'])) {
|
|
118
|
$this->subscriber($feed_nid)->verifyRequest();
|
|
119
|
}
|
|
120
|
// No subscription notification has ben sent, we are being notified.
|
|
121
|
else {
|
|
122
|
try {
|
|
123
|
feeds_source($this->id, $feed_nid)->existing()->import();
|
|
124
|
}
|
|
125
|
catch (Exception $e) {
|
|
126
|
// In case of an error, respond with a 503 Service (temporary) unavailable.
|
|
127
|
header('HTTP/1.1 503 "Not Found"', NULL, 503);
|
|
128
|
drupal_exit();
|
|
129
|
}
|
|
130
|
}
|
|
131
|
// Will generate the default 200 response.
|
|
132
|
header('HTTP/1.1 200 "OK"', NULL, 200);
|
|
133
|
drupal_exit();
|
|
134
|
}
|
|
135
|
|
|
136
|
/**
|
|
137
|
* Override parent::configDefaults().
|
|
138
|
*/
|
|
139
|
public function configDefaults() {
|
|
140
|
return array(
|
|
141
|
'auto_detect_feeds' => FALSE,
|
|
142
|
'use_pubsubhubbub' => FALSE,
|
|
143
|
'designated_hub' => '',
|
|
144
|
'request_timeout' => NULL,
|
|
145
|
'auto_scheme' => 'http',
|
|
146
|
'accept_invalid_cert' => FALSE,
|
|
147
|
);
|
|
148
|
}
|
|
149
|
|
|
150
|
/**
|
|
151
|
* Override parent::configForm().
|
|
152
|
*/
|
|
153
|
public function configForm(&$form_state) {
|
|
154
|
$form = array();
|
|
155
|
$form['auto_detect_feeds'] = array(
|
|
156
|
'#type' => 'checkbox',
|
|
157
|
'#title' => t('Auto detect feeds'),
|
|
158
|
'#description' => t('If the supplied URL does not point to a feed but an HTML document, attempt to extract a feed URL from the document.'),
|
|
159
|
'#default_value' => $this->config['auto_detect_feeds'],
|
|
160
|
);
|
|
161
|
$form['use_pubsubhubbub'] = array(
|
|
162
|
'#type' => 'checkbox',
|
|
163
|
'#title' => t('Use PubSubHubbub'),
|
|
164
|
'#description' => t('Attempt to use a <a href="http://en.wikipedia.org/wiki/PubSubHubbub">PubSubHubbub</a> subscription if available.'),
|
|
165
|
'#default_value' => $this->config['use_pubsubhubbub'],
|
|
166
|
);
|
|
167
|
$form['advanced'] = array(
|
|
168
|
'#title' => t('Advanced settings'),
|
|
169
|
'#type' => 'fieldset',
|
|
170
|
'#collapsible' => TRUE,
|
|
171
|
'#collapsed' => TRUE,
|
|
172
|
);
|
|
173
|
$form['advanced']['auto_scheme'] = array(
|
|
174
|
'#type' => 'textfield',
|
|
175
|
'#title' => t('Automatically add scheme'),
|
|
176
|
'#description' => t('If the supplied URL does not contain the scheme, use this one automatically. Keep empty to force the user to input the scheme.'),
|
|
177
|
'#default_value' => $this->config['auto_scheme'],
|
|
178
|
);
|
|
179
|
$form['advanced']['designated_hub'] = array(
|
|
180
|
'#type' => 'textfield',
|
|
181
|
'#title' => t('Designated hub'),
|
|
182
|
'#description' => t('Enter the URL of a designated PubSubHubbub hub (e. g. superfeedr.com). If given, this hub will be used instead of the hub specified in the actual feed.'),
|
|
183
|
'#default_value' => $this->config['designated_hub'],
|
|
184
|
'#states' => array(
|
|
185
|
'visible' => array(':input[name="use_pubsubhubbub"]' => array('checked' => TRUE)),
|
|
186
|
),
|
|
187
|
);
|
|
188
|
// Per importer override of global http request timeout setting.
|
|
189
|
$form['advanced']['request_timeout'] = array(
|
|
190
|
'#type' => 'textfield',
|
|
191
|
'#title' => t('Request timeout'),
|
|
192
|
'#description' => t('Timeout in seconds to wait for an HTTP get request to finish.</br>' .
|
|
193
|
'<b>Note:</b> this setting will override the global setting.</br>' .
|
|
194
|
'When left empty, the global value is used.'),
|
|
195
|
'#default_value' => $this->config['request_timeout'],
|
|
196
|
'#element_validate' => array('element_validate_integer_positive'),
|
|
197
|
'#maxlength' => 3,
|
|
198
|
'#size'=> 30,
|
|
199
|
);
|
|
200
|
$form['advanced']['accept_invalid_cert'] = array(
|
|
201
|
'#type' => 'checkbox',
|
|
202
|
'#title' => t('Accept invalid SSL certificates'),
|
|
203
|
'#description' => t('<strong>IMPORTANT:</strong> This setting will force cURL to completely ignore all SSL errors. This is a <strong>major security risk</strong> and should only be used during development.'),
|
|
204
|
'#default_value' => $this->config['accept_invalid_cert'],
|
|
205
|
);
|
|
206
|
|
|
207
|
return $form;
|
|
208
|
}
|
|
209
|
|
|
210
|
/**
|
|
211
|
* Expose source form.
|
|
212
|
*/
|
|
213
|
public function sourceForm($source_config) {
|
|
214
|
$form = array();
|
|
215
|
$form['source'] = array(
|
|
216
|
'#type' => 'textfield',
|
|
217
|
'#title' => t('URL'),
|
|
218
|
'#description' => t('Enter a feed URL.'),
|
|
219
|
'#default_value' => isset($source_config['source']) ? $source_config['source'] : '',
|
|
220
|
'#maxlength' => NULL,
|
|
221
|
'#required' => TRUE,
|
|
222
|
);
|
|
223
|
return $form;
|
|
224
|
}
|
|
225
|
|
|
226
|
/**
|
|
227
|
* Override parent::sourceFormValidate().
|
|
228
|
*/
|
|
229
|
public function sourceFormValidate(&$values) {
|
|
230
|
$values['source'] = trim($values['source']);
|
|
231
|
|
|
232
|
// Keep a copy for error messages.
|
|
233
|
$original_url = $values['source'];
|
|
234
|
|
|
235
|
$parts = parse_url($values['source']);
|
|
236
|
if (empty($parts['scheme']) && $this->config['auto_scheme']) {
|
|
237
|
$values['source'] = $this->config['auto_scheme'] . '://' . $values['source'];
|
|
238
|
}
|
|
239
|
|
|
240
|
if (!feeds_valid_url($values['source'], TRUE)) {
|
|
241
|
$form_key = 'feeds][' . get_class($this) . '][source';
|
|
242
|
form_set_error($form_key, t('The URL %source is invalid.', array('%source' => $original_url)));
|
|
243
|
}
|
|
244
|
elseif ($this->config['auto_detect_feeds']) {
|
|
245
|
feeds_include_library('http_request.inc', 'http_request');
|
|
246
|
$url = http_request_get_common_syndication($values['source'], array(
|
|
247
|
'accept_invalid_cert' => $this->config['accept_invalid_cert'],
|
|
248
|
));
|
|
249
|
if ($url) {
|
|
250
|
$values['source'] = $url;
|
|
251
|
}
|
|
252
|
}
|
|
253
|
}
|
|
254
|
|
|
255
|
/**
|
|
256
|
* Override sourceSave() - subscribe to hub.
|
|
257
|
*/
|
|
258
|
public function sourceSave(FeedsSource $source) {
|
|
259
|
if ($this->config['use_pubsubhubbub']) {
|
|
260
|
// If this is a feeds node we want to delay the subscription to
|
|
261
|
// feeds_exit() to avoid transaction race conditions.
|
|
262
|
if ($source->feed_nid) {
|
|
263
|
$job = array('fetcher' => $this, 'source' => $source);
|
|
264
|
feeds_set_subscription_job($job);
|
|
265
|
}
|
|
266
|
else {
|
|
267
|
$this->subscribe($source);
|
|
268
|
}
|
|
269
|
}
|
|
270
|
}
|
|
271
|
|
|
272
|
/**
|
|
273
|
* Override sourceDelete() - unsubscribe from hub.
|
|
274
|
*/
|
|
275
|
public function sourceDelete(FeedsSource $source) {
|
|
276
|
if ($this->config['use_pubsubhubbub']) {
|
|
277
|
// If we're in a feed node, queue the unsubscribe,
|
|
278
|
// else process immediately.
|
|
279
|
if ($source->feed_nid) {
|
|
280
|
$job = array(
|
|
281
|
'type' => $source->id,
|
|
282
|
'id' => $source->feed_nid,
|
|
283
|
'period' => 0,
|
|
284
|
'periodic' => FALSE,
|
|
285
|
);
|
|
286
|
JobScheduler::get('feeds_push_unsubscribe')->set($job);
|
|
287
|
}
|
|
288
|
else {
|
|
289
|
$this->unsubscribe($source);
|
|
290
|
}
|
|
291
|
}
|
|
292
|
}
|
|
293
|
|
|
294
|
/**
|
|
295
|
* Implement FeedsFetcher::subscribe() - subscribe to hub.
|
|
296
|
*/
|
|
297
|
public function subscribe(FeedsSource $source) {
|
|
298
|
$source_config = $source->getConfigFor($this);
|
|
299
|
$this->subscriber($source->feed_nid)->subscribe($source_config['source'], url($this->path($source->feed_nid), array('absolute' => TRUE)), valid_url($this->config['designated_hub']) ? $this->config['designated_hub'] : '');
|
|
300
|
}
|
|
301
|
|
|
302
|
/**
|
|
303
|
* Implement FeedsFetcher::unsubscribe() - unsubscribe from hub.
|
|
304
|
*/
|
|
305
|
public function unsubscribe(FeedsSource $source) {
|
|
306
|
$source_config = $source->getConfigFor($this);
|
|
307
|
$this->subscriber($source->feed_nid)->unsubscribe($source_config['source'], url($this->path($source->feed_nid), array('absolute' => TRUE)));
|
|
308
|
}
|
|
309
|
|
|
310
|
/**
|
|
311
|
* Implement FeedsFetcher::importPeriod().
|
|
312
|
*/
|
|
313
|
public function importPeriod(FeedsSource $source) {
|
|
314
|
if ($this->subscriber($source->feed_nid)->subscribed()) {
|
|
315
|
return 259200; // Delay for three days if there is a successful subscription.
|
|
316
|
}
|
|
317
|
}
|
|
318
|
|
|
319
|
/**
|
|
320
|
* Convenience method for instantiating a subscriber object.
|
|
321
|
*/
|
|
322
|
protected function subscriber($subscriber_id) {
|
|
323
|
return PushSubscriber::instance($this->id, $subscriber_id, 'PuSHSubscription', PuSHEnvironment::instance());
|
|
324
|
}
|
|
325
|
}
|
|
326
|
|
|
327
|
/**
|
|
328
|
* Implement a PuSHSubscriptionInterface.
|
|
329
|
*/
|
|
330
|
class PuSHSubscription implements PuSHSubscriptionInterface {
|
|
331
|
public $domain;
|
|
332
|
public $subscriber_id;
|
|
333
|
public $hub;
|
|
334
|
public $topic;
|
|
335
|
public $status;
|
|
336
|
public $secret;
|
|
337
|
public $post_fields;
|
|
338
|
public $timestamp;
|
|
339
|
|
|
340
|
/**
|
|
341
|
* Load a subscription.
|
|
342
|
*/
|
|
343
|
public static function load($domain, $subscriber_id) {
|
|
344
|
if ($v = db_query("SELECT * FROM {feeds_push_subscriptions} WHERE domain = :domain AND subscriber_id = :sid", array(':domain' => $domain, ':sid' => $subscriber_id))->fetchAssoc()) {
|
|
345
|
$v['post_fields'] = unserialize($v['post_fields']);
|
|
346
|
return new PuSHSubscription($v['domain'], $v['subscriber_id'], $v['hub'], $v['topic'], $v['secret'], $v['status'], $v['post_fields'], $v['timestamp']);
|
|
347
|
}
|
|
348
|
}
|
|
349
|
|
|
350
|
/**
|
|
351
|
* Create a subscription.
|
|
352
|
*/
|
|
353
|
public function __construct($domain, $subscriber_id, $hub, $topic, $secret, $status = '', $post_fields = '') {
|
|
354
|
$this->domain = $domain;
|
|
355
|
$this->subscriber_id = $subscriber_id;
|
|
356
|
$this->hub = $hub;
|
|
357
|
$this->topic = $topic;
|
|
358
|
$this->status = $status;
|
|
359
|
$this->secret = $secret;
|
|
360
|
$this->post_fields = $post_fields;
|
|
361
|
}
|
|
362
|
|
|
363
|
/**
|
|
364
|
* Save a subscription.
|
|
365
|
*/
|
|
366
|
public function save() {
|
|
367
|
$this->timestamp = time();
|
|
368
|
$this->delete($this->domain, $this->subscriber_id);
|
|
369
|
drupal_write_record('feeds_push_subscriptions', $this);
|
|
370
|
}
|
|
371
|
|
|
372
|
/**
|
|
373
|
* Delete a subscription.
|
|
374
|
*/
|
|
375
|
public function delete() {
|
|
376
|
db_delete('feeds_push_subscriptions')
|
|
377
|
->condition('domain', $this->domain)
|
|
378
|
->condition('subscriber_id', $this->subscriber_id)
|
|
379
|
->execute();
|
|
380
|
}
|
|
381
|
}
|
|
382
|
|
|
383
|
/**
|
|
384
|
* Provide environmental functions to the PuSHSubscriber library.
|
|
385
|
*/
|
|
386
|
class PuSHEnvironment implements PuSHSubscriberEnvironmentInterface {
|
|
387
|
/**
|
|
388
|
* Singleton.
|
|
389
|
*/
|
|
390
|
public static function instance() {
|
|
391
|
static $env;
|
|
392
|
if (empty($env)) {
|
|
393
|
$env = new PuSHEnvironment();
|
|
394
|
}
|
|
395
|
return $env;
|
|
396
|
}
|
|
397
|
|
|
398
|
/**
|
|
399
|
* Implements PuSHSubscriberEnvironmentInterface::msg().
|
|
400
|
*/
|
|
401
|
public function msg($msg, $level = 'status') {
|
|
402
|
drupal_set_message(check_plain($msg), $level);
|
|
403
|
}
|
|
404
|
|
|
405
|
/**
|
|
406
|
* Implements PuSHSubscriberEnvironmentInterface::log().
|
|
407
|
*/
|
|
408
|
public function log($msg, $level = 'status') {
|
|
409
|
switch ($level) {
|
|
410
|
case 'error':
|
|
411
|
$severity = WATCHDOG_ERROR;
|
|
412
|
break;
|
|
413
|
case 'warning':
|
|
414
|
$severity = WATCHDOG_WARNING;
|
|
415
|
break;
|
|
416
|
default:
|
|
417
|
$severity = WATCHDOG_NOTICE;
|
|
418
|
break;
|
|
419
|
}
|
|
420
|
feeds_dbg($msg);
|
|
421
|
watchdog('FeedsHTTPFetcher', $msg, array(), $severity);
|
|
422
|
}
|
|
423
|
}
|
