summaryrefslogtreecommitdiff
path: root/plugins/Facebook/facebookutil.php
blob: e78856f7c474eb0733e90109c685afcd5e88a1e8 (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
<?php
/*
 * StatusNet - the distributed open-source microblogging tool
 * Copyright (C) 2008, 2009, StatusNet, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

require_once INSTALLDIR . '/plugins/Facebook/facebook/facebook.php';
require_once INSTALLDIR . '/plugins/Facebook/facebookaction.php';
require_once INSTALLDIR . '/lib/noticelist.php';

define("FACEBOOK_SERVICE", 2); // Facebook is foreign_service ID 2
define("FACEBOOK_NOTICE_PREFIX", 1);
define("FACEBOOK_PROMPTED_UPDATE_PREF", 2);

function getFacebook()
{
    static $facebook = null;

    $apikey = common_config('facebook', 'apikey');
    $secret = common_config('facebook', 'secret');

    if ($facebook === null) {
        $facebook = new Facebook($apikey, $secret);
    }

    if (empty($facebook)) {
        common_log(LOG_ERR, 'Could not make new Facebook client obj!',
            __FILE__);
    }

    return $facebook;
}

function isFacebookBound($notice, $flink) {
    if (empty($flink)) {
        return false;
    }

    // Avoid a loop
    if ($notice->source == 'Facebook') {
        common_log(LOG_INFO, "Skipping notice $notice->id because its " .
                   'source is Facebook.');
        return false;
    }

    // If the user does not want to broadcast to Facebook, move along
    if (!($flink->noticesync & FOREIGN_NOTICE_SEND == FOREIGN_NOTICE_SEND)) {
        common_log(LOG_INFO, "Skipping notice $notice->id " .
            'because user has FOREIGN_NOTICE_SEND bit off.');
        return false;
    }

    // If it's not a reply, or if the user WANTS to send @-replies,
    // then, yeah, it can go to Facebook.
    if (!preg_match('/@[a-zA-Z0-9_]{1,15}\b/u', $notice->content) ||
        ($flink->noticesync & FOREIGN_NOTICE_SEND_REPLY)) {
        return true;
    }

    return false;
}

function facebookBroadcastNotice($notice)
{
    $facebook = getFacebook();
    $flink = Foreign_link::getByUserID(
        $notice->profile_id,
        FACEBOOK_SERVICE
    );

    if (isFacebookBound($notice, $flink)) {
        // Okay, we're good to go, update the FB status
        $fbuid = $flink->foreign_id;
        $user = $flink->getUser();

        try {
            // Check permissions
            common_debug(
                'FacebookPlugin - checking for publish_stream permission for user '
                . "$user->nickname ($user->id), Facebook UID: $fbuid"
            );

            // NOTE: $facebook->api_client->users_hasAppPermission('publish_stream', $fbuid)
            // has been returning bogus results, so we're using FQL to check for
            // publish_stream permission now
            $fql = "SELECT publish_stream FROM permissions WHERE uid = $fbuid";
            $result = $facebook->api_client->fql_query($fql);

            $canPublish = 0;

            if (!empty($result)) {
                $canPublish = $result[0]['publish_stream'];
            }

            if ($canPublish == 1) {
                common_debug(
                    "FacebookPlugin - $user->nickname ($user->id), Facebook UID: $fbuid "
                    . 'has publish_stream permission.'
                );
            } else {
                common_debug(
                    "FacebookPlugin - $user->nickname ($user->id), Facebook UID: $fbuid "
                    . 'does NOT have publish_stream permission. Facebook '
                    . 'returned: ' . var_export($result, true)
                );
            }

            common_debug(
                'FacebookPlugin - checking for status_update permission for user '
                . "$user->nickname ($user->id), Facebook UID: $fbuid. "
            );

            $canUpdate = $facebook->api_client->users_hasAppPermission(
                'status_update',
                $fbuid
            );

            if ($canUpdate == 1) {
                common_debug(
                    "FacebookPlugin - $user->nickname ($user->id), Facebook UID: $fbuid "
                    . 'has status_update permission.'
                );
            } else {
                common_debug(
                    "FacebookPlugin - $user->nickname ($user->id), Facebook UID: $fbuid "
                    .'does NOT have status_update permission. Facebook '
                    . 'returned: ' . var_export($canPublish, true)
                );
            }

            // Post to Facebook
            if ($notice->hasAttachments() && $canPublish == 1) {
                publishStream($notice, $user, $fbuid);
            } elseif ($canUpdate == 1 || $canPublish == 1) {
                statusUpdate($notice, $user, $fbuid);
            } else {
                $msg = "FacebookPlugin - Not sending notice $notice->id to Facebook " .
                  "because user $user->nickname has not given the " .
                  'Facebook app \'status_update\' or \'publish_stream\' permission.';
                common_log(LOG_WARNING, $msg);
            }

            // Finally, attempt to update the user's profile box
            if ($canPublish == 1 || $canUpdate == 1) {
                updateProfileBox($facebook, $flink, $notice, $user);
            }

        } catch (FacebookRestClientException $e) {
            return handleFacebookError($e, $notice, $flink);
        }
    }

    return true;
}

function handleFacebookError($e, $notice, $flink)
{
    $fbuid  = $flink->foreign_id;
    $user   = $flink->getUser();
    $code   = $e->getCode();
    $errmsg = $e->getMessage();

    // XXX: Check for any others?
    switch($code) {
     case 100: // Invalid parameter
        $msg = "FacebookPlugin - Facebook claims notice %d was posted with an invalid parameter (error code 100):"
            . "\"%s\" (Notice details: nickname=%s, user ID=%d, Facebook ID=%d, notice content=\"%s\"). "
            . "Removing notice from the Facebook queue for safety.";
        common_log(
            LOG_ERR, sprintf(
                $msg,
                $notice->id,
                $errmsg,
                $user->nickname,
                $user->id,
                $fbuid,
                $notice->content
            )
        );
        return true;
        break;
     case 200: // Permissions error
     case 250: // Updating status requires the extended permission status_update
        remove_facebook_app($flink);
        return true; // dequeue
        break;
     case 341: // Feed action request limit reached
            $msg = "FacebookPlugin - User %s (User ID=%d, Facebook ID=%d) has exceeded "
                   . "his/her limit for posting notices to Facebook today. Dequeuing "
                   . "notice %d.";
            common_log(
                LOG_INFO, sprintf(
                    $msg,
                    $user->nickname,
                    $user->id,
                    $fbuid,
                    $notice->id
                )
            );
	// @fixme: We want to rety at a later time when the throttling has expired
	// instead of just giving up.
        return true;
        break;
     default:
        $msg = "FacebookPlugin - Facebook returned an error we don't know how to deal with while trying to "
            . "post notice %d. Error code: %d, error message: \"%s\". (Notice details: "
            . "nickname=%s, user ID=%d, Facebook ID=%d, notice content=\"%s\"). Removing notice "
	    . "from the Facebook queue for safety.";
        common_log(
            LOG_ERR, sprintf(
                $msg,
                $notice->id,
                $code,
                $errmsg,
                $user->nickname,
                $user->id,
                $fbuid,
                $notice->content
            )
        );
        return true; // dequeue
        break;
    }
}

function statusUpdate($notice, $user, $fbuid)
{
    common_debug(
        "FacebookPlugin - Attempting to post notice $notice->id "
        . "as a status update for $user->nickname ($user->id), "
        . "Facebook UID: $fbuid"
    );

    $facebook = getFacebook();
    $result = $facebook->api_client->users_setStatus(
         $notice->content,
         $fbuid,
         false,
         true
    );

    common_debug('Facebook returned: ' . var_export($result, true));

    common_log(
        LOG_INFO,
        "FacebookPlugin - Posted notice $notice->id as a status "
        . "update for $user->nickname ($user->id), "
        . "Facebook UID: $fbuid"
    );
}

function publishStream($notice, $user, $fbuid)
{
    common_debug(
        "FacebookPlugin - Attempting to post notice $notice->id "
        . "as stream item with attachment for $user->nickname ($user->id), "
        . "Facebook UID: $fbuid"
    );

    $fbattachment = format_attachments($notice->attachments());

    $facebook = getFacebook();
    $facebook->api_client->stream_publish(
        $notice->content,
        $fbattachment,
        null,
        null,
        $fbuid
    );

    common_log(
        LOG_INFO,
        "FacebookPlugin - Posted notice $notice->id as a stream "
        . "item with attachment for $user->nickname ($user->id), "
        . "Facebook UID: $fbuid"
    );
}

function updateProfileBox($facebook, $flink, $notice, $user) {

    $facebook = getFacebook();
    $fbaction = new FacebookAction(
        $output = 'php://output',
        $indent = null,
        $facebook,
        $flink
    );

    $fbuid = $flink->foreign_id;

    common_debug(
          'FacebookPlugin - Attempting to update profile box with '
          . "content from notice $notice->id for $user->nickname ($user->id), "
          . "Facebook UID: $fbuid"
    );

    $fbaction->updateProfileBox($notice);

    common_debug(
        'FacebookPlugin - finished updating profile box for '
        . "$user->nickname ($user->id) Facebook UID: $fbuid"
    );

}

function format_attachments($attachments)
{
    $fbattachment          = array();
    $fbattachment['media'] = array();

    foreach($attachments as $attachment)
    {
        if($enclosure = $attachment->getEnclosure()){
            $fbmedia = get_fbmedia_for_attachment($enclosure);
        }else{
            $fbmedia = get_fbmedia_for_attachment($attachment);
        }
        if($fbmedia){
            $fbattachment['media'][]=$fbmedia;
        }else{
            $fbattachment['name'] = ($attachment->title ?
                                  $attachment->title : $attachment->url);
            $fbattachment['href'] = $attachment->url;
        }
    }
    if(count($fbattachment['media'])>0){
        unset($fbattachment['name']);
        unset($fbattachment['href']);
    }
    return $fbattachment;
}

/**
* given an File objects, returns an associative array suitable for Facebook media
*/
function get_fbmedia_for_attachment($attachment)
{
    $fbmedia    = array();

    if (strncmp($attachment->mimetype, 'image/', strlen('image/')) == 0) {
        $fbmedia['type']         = 'image';
        $fbmedia['src']          = $attachment->url;
        $fbmedia['href']         = $attachment->url;
    } else if ($attachment->mimetype == 'audio/mpeg') {
        $fbmedia['type']         = 'mp3';
        $fbmedia['src']          = $attachment->url;
    }else if ($attachment->mimetype == 'application/x-shockwave-flash') {
        $fbmedia['type']         = 'flash';

        // http://wiki.developers.facebook.com/index.php/Attachment_%28Streams%29
        // says that imgsrc is required... but we have no value to put in it
        // $fbmedia['imgsrc']='';

        $fbmedia['swfsrc']       = $attachment->url;
    }else{
        return false;
    }
    return $fbmedia;
}

function remove_facebook_app($flink)
{

    $user = $flink->getUser();

    common_log(LOG_INFO, 'Removing Facebook App Foreign link for ' .
        "user $user->nickname (user id: $user->id).");

    $result = $flink->delete();

    if (empty($result)) {
        common_log(LOG_ERR, 'Could not remove Facebook App ' .
            "Foreign_link for $user->nickname (user id: $user->id)!");
        common_log_db_error($flink, 'DELETE', __FILE__);
    }

    // Notify the user that we are removing their FB app access

    $result = mail_facebook_app_removed($user);

    if (!$result) {

        $msg = 'Unable to send email to notify ' .
            "$user->nickname (user id: $user->id) " .
            'that their Facebook app link was ' .
            'removed!';

        common_log(LOG_WARNING, $msg);
    }
}

/**
 * Send a mail message to notify a user that her Facebook Application
 * access has been removed.
 *
 * @param User $user   user whose Facebook app link has been removed
 *
 * @return boolean success flag
 */
function mail_facebook_app_removed($user)
{
    $profile = $user->getProfile();

    $site_name = common_config('site', 'name');

    common_switch_locale($user->language);

    $subject = sprintf(
        _m('Your %1$s Facebook application access has been disabled.',
            $site_name));

    $body = sprintf(_m("Hi, %1\$s. We're sorry to inform you that we are " .
        'unable to update your Facebook status from %2$s, and have disabled ' .
        'the Facebook application for your account. This may be because ' .
        'you have removed the Facebook application\'s authorization, or ' .
        'have deleted your Facebook account.  You can re-enable the ' .
        'Facebook application and automatic status updating by ' .
        "re-installing the %2\$s Facebook application.\n\nRegards,\n\n%2\$s"),
        $user->nickname, $site_name);

    common_switch_locale();
    return mail_to_user($user, $subject, $body);
}