aboutsummaryrefslogtreecommitdiffstats
path: root/mayor-orig/www/include/share/facebook/Facebook.php
blob: 2e789ca2aa3948d9fec0174a50629b591536734f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
<?php
/**
 * Copyright 2017 Facebook, Inc.
 *
 * You are hereby granted a non-exclusive, worldwide, royalty-free license to
 * use, copy, modify, and distribute this software in source code or binary
 * form for use in connection with the web services and APIs provided by
 * Facebook.
 *
 * As with any software that integrates with the Facebook platform, your use
 * of this software is subject to the Facebook Developer Principles and
 * Policies [http://developers.facebook.com/policy/]. This copyright notice
 * shall be included in all copies or substantial portions of the software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */
namespace Facebook;

use Facebook\Authentication\AccessToken;
use Facebook\Authentication\OAuth2Client;
use Facebook\FileUpload\FacebookFile;
use Facebook\FileUpload\FacebookResumableUploader;
use Facebook\FileUpload\FacebookTransferChunk;
use Facebook\FileUpload\FacebookVideo;
use Facebook\GraphNodes\GraphEdge;
use Facebook\Url\UrlDetectionInterface;
use Facebook\Url\FacebookUrlDetectionHandler;
use Facebook\PseudoRandomString\PseudoRandomStringGeneratorFactory;
use Facebook\PseudoRandomString\PseudoRandomStringGeneratorInterface;
use Facebook\HttpClients\HttpClientsFactory;
use Facebook\PersistentData\PersistentDataFactory;
use Facebook\PersistentData\PersistentDataInterface;
use Facebook\Helpers\FacebookCanvasHelper;
use Facebook\Helpers\FacebookJavaScriptHelper;
use Facebook\Helpers\FacebookPageTabHelper;
use Facebook\Helpers\FacebookRedirectLoginHelper;
use Facebook\Exceptions\FacebookSDKException;

/**
 * Class Facebook
 *
 * @package Facebook
 */
class Facebook
{
    /**
     * @const string Version number of the Facebook PHP SDK.
     */
    const VERSION = '5.6.3';

    /**
     * @const string Default Graph API version for requests.
     */
    const DEFAULT_GRAPH_VERSION = 'v2.10';

    /**
     * @const string The name of the environment variable that contains the app ID.
     */
    const APP_ID_ENV_NAME = 'FACEBOOK_APP_ID';

    /**
     * @const string The name of the environment variable that contains the app secret.
     */
    const APP_SECRET_ENV_NAME = 'FACEBOOK_APP_SECRET';

    /**
     * @var FacebookApp The FacebookApp entity.
     */
    protected $app;

    /**
     * @var FacebookClient The Facebook client service.
     */
    protected $client;

    /**
     * @var OAuth2Client The OAuth 2.0 client service.
     */
    protected $oAuth2Client;

    /**
     * @var UrlDetectionInterface|null The URL detection handler.
     */
    protected $urlDetectionHandler;

    /**
     * @var PseudoRandomStringGeneratorInterface|null The cryptographically secure pseudo-random string generator.
     */
    protected $pseudoRandomStringGenerator;

    /**
     * @var AccessToken|null The default access token to use with requests.
     */
    protected $defaultAccessToken;

    /**
     * @var string|null The default Graph version we want to use.
     */
    protected $defaultGraphVersion;

    /**
     * @var PersistentDataInterface|null The persistent data handler.
     */
    protected $persistentDataHandler;

    /**
     * @var FacebookResponse|FacebookBatchResponse|null Stores the last request made to Graph.
     */
    protected $lastResponse;

    /**
     * Instantiates a new Facebook super-class object.
     *
     * @param array $config
     *
     * @throws FacebookSDKException
     */
    public function __construct(array $config = [])
    {
        $config = array_merge([
            'app_id' => getenv(static::APP_ID_ENV_NAME),
            'app_secret' => getenv(static::APP_SECRET_ENV_NAME),
            'default_graph_version' => static::DEFAULT_GRAPH_VERSION,
            'enable_beta_mode' => false,
            'http_client_handler' => null,
            'persistent_data_handler' => null,
            'pseudo_random_string_generator' => null,
            'url_detection_handler' => null,
        ], $config);

        if (!$config['app_id']) {
            throw new FacebookSDKException('Required "app_id" key not supplied in config and could not find fallback environment variable "' . static::APP_ID_ENV_NAME . '"');
        }
        if (!$config['app_secret']) {
            throw new FacebookSDKException('Required "app_secret" key not supplied in config and could not find fallback environment variable "' . static::APP_SECRET_ENV_NAME . '"');
        }

        $this->app = new FacebookApp($config['app_id'], $config['app_secret']);
        $this->client = new FacebookClient(
            HttpClientsFactory::createHttpClient($config['http_client_handler']),
            $config['enable_beta_mode']
        );
        $this->pseudoRandomStringGenerator = PseudoRandomStringGeneratorFactory::createPseudoRandomStringGenerator(
            $config['pseudo_random_string_generator']
        );
        $this->setUrlDetectionHandler($config['url_detection_handler'] ?: new FacebookUrlDetectionHandler());
        $this->persistentDataHandler = PersistentDataFactory::createPersistentDataHandler(
            $config['persistent_data_handler']
        );

        if (isset($config['default_access_token'])) {
            $this->setDefaultAccessToken($config['default_access_token']);
        }

        // @todo v6: Throw an InvalidArgumentException if "default_graph_version" is not set
        $this->defaultGraphVersion = $config['default_graph_version'];
    }

    /**
     * Returns the FacebookApp entity.
     *
     * @return FacebookApp
     */
    public function getApp()
    {
        return $this->app;
    }

    /**
     * Returns the FacebookClient service.
     *
     * @return FacebookClient
     */
    public function getClient()
    {
        return $this->client;
    }

    /**
     * Returns the OAuth 2.0 client service.
     *
     * @return OAuth2Client
     */
    public function getOAuth2Client()
    {
        if (!$this->oAuth2Client instanceof OAuth2Client) {
            $app = $this->getApp();
            $client = $this->getClient();
            $this->oAuth2Client = new OAuth2Client($app, $client, $this->defaultGraphVersion);
        }

        return $this->oAuth2Client;
    }

    /**
     * Returns the last response returned from Graph.
     *
     * @return FacebookResponse|FacebookBatchResponse|null
     */
    public function getLastResponse()
    {
        return $this->lastResponse;
    }

    /**
     * Returns the URL detection handler.
     *
     * @return UrlDetectionInterface
     */
    public function getUrlDetectionHandler()
    {
        return $this->urlDetectionHandler;
    }

    /**
     * Changes the URL detection handler.
     *
     * @param UrlDetectionInterface $urlDetectionHandler
     */
    private function setUrlDetectionHandler(UrlDetectionInterface $urlDetectionHandler)
    {
        $this->urlDetectionHandler = $urlDetectionHandler;
    }

    /**
     * Returns the default AccessToken entity.
     *
     * @return AccessToken|null
     */
    public function getDefaultAccessToken()
    {
        return $this->defaultAccessToken;
    }

    /**
     * Sets the default access token to use with requests.
     *
     * @param AccessToken|string $accessToken The access token to save.
     *
     * @throws \InvalidArgumentException
     */
    public function setDefaultAccessToken($accessToken)
    {
        if (is_string($accessToken)) {
            $this->defaultAccessToken = new AccessToken($accessToken);

            return;
        }

        if ($accessToken instanceof AccessToken) {
            $this->defaultAccessToken = $accessToken;

            return;
        }

        throw new \InvalidArgumentException('The default access token must be of type "string" or Facebook\AccessToken');
    }

    /**
     * Returns the default Graph version.
     *
     * @return string
     */
    public function getDefaultGraphVersion()
    {
        return $this->defaultGraphVersion;
    }

    /**
     * Returns the redirect login helper.
     *
     * @return FacebookRedirectLoginHelper
     */
    public function getRedirectLoginHelper()
    {
        return new FacebookRedirectLoginHelper(
            $this->getOAuth2Client(),
            $this->persistentDataHandler,
            $this->urlDetectionHandler,
            $this->pseudoRandomStringGenerator
        );
    }

    /**
     * Returns the JavaScript helper.
     *
     * @return FacebookJavaScriptHelper
     */
    public function getJavaScriptHelper()
    {
        return new FacebookJavaScriptHelper($this->app, $this->client, $this->defaultGraphVersion);
    }

    /**
     * Returns the canvas helper.
     *
     * @return FacebookCanvasHelper
     */
    public function getCanvasHelper()
    {
        return new FacebookCanvasHelper($this->app, $this->client, $this->defaultGraphVersion);
    }

    /**
     * Returns the page tab helper.
     *
     * @return FacebookPageTabHelper
     */
    public function getPageTabHelper()
    {
        return new FacebookPageTabHelper($this->app, $this->client, $this->defaultGraphVersion);
    }

    /**
     * Sends a GET request to Graph and returns the result.
     *
     * @param string                  $endpoint
     * @param AccessToken|string|null $accessToken
     * @param string|null             $eTag
     * @param string|null             $graphVersion
     *
     * @return FacebookResponse
     *
     * @throws FacebookSDKException
     */
    public function get($endpoint, $accessToken = null, $eTag = null, $graphVersion = null)
    {
        return $this->sendRequest(
            'GET',
            $endpoint,
            $params = [],
            $accessToken,
            $eTag,
            $graphVersion
        );
    }

    /**
     * Sends a POST request to Graph and returns the result.
     *
     * @param string                  $endpoint
     * @param array                   $params
     * @param AccessToken|string|null $accessToken
     * @param string|null             $eTag
     * @param string|null             $graphVersion
     *
     * @return FacebookResponse
     *
     * @throws FacebookSDKException
     */
    public function post($endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
    {
        return $this->sendRequest(
            'POST',
            $endpoint,
            $params,
            $accessToken,
            $eTag,
            $graphVersion
        );
    }

    /**
     * Sends a DELETE request to Graph and returns the result.
     *
     * @param string                  $endpoint
     * @param array                   $params
     * @param AccessToken|string|null $accessToken
     * @param string|null             $eTag
     * @param string|null             $graphVersion
     *
     * @return FacebookResponse
     *
     * @throws FacebookSDKException
     */
    public function delete($endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
    {
        return $this->sendRequest(
            'DELETE',
            $endpoint,
            $params,
            $accessToken,
            $eTag,
            $graphVersion
        );
    }

    /**
     * Sends a request to Graph for the next page of results.
     *
     * @param GraphEdge $graphEdge The GraphEdge to paginate over.
     *
     * @return GraphEdge|null
     *
     * @throws FacebookSDKException
     */
    public function next(GraphEdge $graphEdge)
    {
        return $this->getPaginationResults($graphEdge, 'next');
    }

    /**
     * Sends a request to Graph for the previous page of results.
     *
     * @param GraphEdge $graphEdge The GraphEdge to paginate over.
     *
     * @return GraphEdge|null
     *
     * @throws FacebookSDKException
     */
    public function previous(GraphEdge $graphEdge)
    {
        return $this->getPaginationResults($graphEdge, 'previous');
    }

    /**
     * Sends a request to Graph for the next page of results.
     *
     * @param GraphEdge $graphEdge The GraphEdge to paginate over.
     * @param string    $direction The direction of the pagination: next|previous.
     *
     * @return GraphEdge|null
     *
     * @throws FacebookSDKException
     */
    public function getPaginationResults(GraphEdge $graphEdge, $direction)
    {
        $paginationRequest = $graphEdge->getPaginationRequest($direction);
        if (!$paginationRequest) {
            return null;
        }

        $this->lastResponse = $this->client->sendRequest($paginationRequest);

        // Keep the same GraphNode subclass
        $subClassName = $graphEdge->getSubClassName();
        $graphEdge = $this->lastResponse->getGraphEdge($subClassName, false);

        return count($graphEdge) > 0 ? $graphEdge : null;
    }

    /**
     * Sends a request to Graph and returns the result.
     *
     * @param string                  $method
     * @param string                  $endpoint
     * @param array                   $params
     * @param AccessToken|string|null $accessToken
     * @param string|null             $eTag
     * @param string|null             $graphVersion
     *
     * @return FacebookResponse
     *
     * @throws FacebookSDKException
     */
    public function sendRequest($method, $endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
    {
        $accessToken = $accessToken ?: $this->defaultAccessToken;
        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;
        $request = $this->request($method, $endpoint, $params, $accessToken, $eTag, $graphVersion);

        return $this->lastResponse = $this->client->sendRequest($request);
    }

    /**
     * Sends a batched request to Graph and returns the result.
     *
     * @param array                   $requests
     * @param AccessToken|string|null $accessToken
     * @param string|null             $graphVersion
     *
     * @return FacebookBatchResponse
     *
     * @throws FacebookSDKException
     */
    public function sendBatchRequest(array $requests, $accessToken = null, $graphVersion = null)
    {
        $accessToken = $accessToken ?: $this->defaultAccessToken;
        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;
        $batchRequest = new FacebookBatchRequest(
            $this->app,
            $requests,
            $accessToken,
            $graphVersion
        );

        return $this->lastResponse = $this->client->sendBatchRequest($batchRequest);
    }

    /**
     * Instantiates an empty FacebookBatchRequest entity.
     *
     * @param  AccessToken|string|null $accessToken  The top-level access token. Requests with no access token
     *                                               will fallback to this.
     * @param  string|null             $graphVersion The Graph API version to use.
     * @return FacebookBatchRequest
     */
    public function newBatchRequest($accessToken = null, $graphVersion = null)
    {
        $accessToken = $accessToken ?: $this->defaultAccessToken;
        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;

        return new FacebookBatchRequest(
            $this->app,
            [],
            $accessToken,
            $graphVersion
        );
    }

    /**
     * Instantiates a new FacebookRequest entity.
     *
     * @param string                  $method
     * @param string                  $endpoint
     * @param array                   $params
     * @param AccessToken|string|null $accessToken
     * @param string|null             $eTag
     * @param string|null             $graphVersion
     *
     * @return FacebookRequest
     *
     * @throws FacebookSDKException
     */
    public function request($method, $endpoint, array $params = [], $accessToken = null, $eTag = null, $graphVersion = null)
    {
        $accessToken = $accessToken ?: $this->defaultAccessToken;
        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;

        return new FacebookRequest(
            $this->app,
            $accessToken,
            $method,
            $endpoint,
            $params,
            $eTag,
            $graphVersion
        );
    }

    /**
     * Factory to create FacebookFile's.
     *
     * @param string $pathToFile
     *
     * @return FacebookFile
     *
     * @throws FacebookSDKException
     */
    public function fileToUpload($pathToFile)
    {
        return new FacebookFile($pathToFile);
    }

    /**
     * Factory to create FacebookVideo's.
     *
     * @param string $pathToFile
     *
     * @return FacebookVideo
     *
     * @throws FacebookSDKException
     */
    public function videoToUpload($pathToFile)
    {
        return new FacebookVideo($pathToFile);
    }

    /**
     * Upload a video in chunks.
     *
     * @param int $target The id of the target node before the /videos edge.
     * @param string $pathToFile The full path to the file.
     * @param array $metadata The metadata associated with the video file.
     * @param string|null $accessToken The access token.
     * @param int $maxTransferTries The max times to retry a failed upload chunk.
     * @param string|null $graphVersion The Graph API version to use.
     *
     * @return array
     *
     * @throws FacebookSDKException
     */
    public function uploadVideo($target, $pathToFile, $metadata = [], $accessToken = null, $maxTransferTries = 5, $graphVersion = null)
    {
        $accessToken = $accessToken ?: $this->defaultAccessToken;
        $graphVersion = $graphVersion ?: $this->defaultGraphVersion;

        $uploader = new FacebookResumableUploader($this->app, $this->client, $accessToken, $graphVersion);
        $endpoint = '/'.$target.'/videos';
        $file = $this->videoToUpload($pathToFile);
        $chunk = $uploader->start($endpoint, $file);

        do {
            $chunk = $this->maxTriesTransfer($uploader, $endpoint, $chunk, $maxTransferTries);
        } while (!$chunk->isLastChunk());

        return [
          'video_id' => $chunk->getVideoId(),
          'success' => $uploader->finish($endpoint, $chunk->getUploadSessionId(), $metadata),
        ];
    }

    /**
     * Attempts to upload a chunk of a file in $retryCountdown tries.
     *
     * @param FacebookResumableUploader $uploader
     * @param string $endpoint
     * @param FacebookTransferChunk $chunk
     * @param int $retryCountdown
     *
     * @return FacebookTransferChunk
     *
     * @throws FacebookSDKException
     */
    private function maxTriesTransfer(FacebookResumableUploader $uploader, $endpoint, FacebookTransferChunk $chunk, $retryCountdown)
    {
        $newChunk = $uploader->transfer($endpoint, $chunk, $retryCountdown < 1);

        if ($newChunk !== $chunk) {
            return $newChunk;
        }

        $retryCountdown--;

        // If transfer() returned the same chunk entity, the transfer failed but is resumable.
        return $this->maxTriesTransfer($uploader, $endpoint, $chunk, $retryCountdown);
    }
}