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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, 2009, Control Yourself, 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.'/extlib/facebook/facebook.php';
require_once INSTALLDIR.'/lib/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
$status = null;
$fbuid = $flink->foreign_id;
$user = $flink->getUser();
$attachments = $notice->attachments();
try {
// Get the status 'verb' (prefix) the user has set
// XXX: Does this call count against our per user FB request limit?
// If so we should consider storing verb elsewhere or not storing
$prefix = $facebook->api_client->data_getUserPreference(FACEBOOK_NOTICE_PREFIX,
$fbuid);
$status = "$prefix $notice->content";
$can_publish = $facebook->api_client->users_hasAppPermission('publish_stream',
$fbuid);
$can_update = $facebook->api_client->users_hasAppPermission('status_update',
$fbuid);
if (!empty($attachments) && $can_publish == 1) {
$fbattachment = format_attachments($attachments);
$facebook->api_client->stream_publish($status, $fbattachment,
null, null, $fbuid);
common_log(LOG_INFO,
"Posted notice $notice->id w/attachment " .
"to Facebook user's stream (fbuid = $fbuid).");
} elseif ($can_update == 1 || $can_publish == 1) {
$facebook->api_client->users_setStatus($status, $fbuid, false, true);
common_log(LOG_INFO,
"Posted notice $notice->id to Facebook " .
"as a status update (fbuid = $fbuid).");
} else {
$msg = "Not sending notice $notice->id to Facebook " .
"because user $user->nickname hasn't given the " .
'Facebook app \'status_update\' or \'publish_stream\' permission.';
common_log(LOG_WARNING, $msg);
}
// Finally, attempt to update the user's profile box
if ($can_publish == 1 || $can_update == 1) {
updateProfileBox($facebook, $flink, $notice);
}
} catch (FacebookRestClientException $e) {
$code = $e->getCode();
common_log(LOG_WARNING, 'Facebook returned error code ' .
$code . ': ' . $e->getMessage());
common_log(LOG_WARNING,
'Unable to update Facebook status for ' .
"$user->nickname (user id: $user->id)!");
if ($code == 200 || $code == 250) {
// 200 The application does not have permission to operate on the passed in uid parameter.
// 250 Updating status requires the extended permission status_update or publish_stream.
// see: http://wiki.developers.facebook.com/index.php/Users.setStatus#Example_Return_XML
remove_facebook_app($flink);
} else {
// Try sending again later.
return false;
}
}
}
return true;
}
function updateProfileBox($facebook, $flink, $notice) {
$fbaction = new FacebookAction($output = 'php://output',
$indent = true, $facebook, $flink);
$fbaction->updateProfileBox($notice);
}
function format_attachments($attachments)
{
$fbattachment = array();
$fbattachment['media'] = array();
// Facebook only supports one attachment per item
$attachment = $attachments[0];
$fbmedia = array();
if (strncmp($attachment->mimetype, 'image/', strlen('image/')) == 0) {
$fbmedia['type'] = 'image';
$fbmedia['src'] = $attachment->url;
$fbmedia['href'] = $attachment->url;
$fbattachment['media'][] = $fbmedia;
} else if ($attachment->mimetype == 'audio/mpeg') {
$fbmedia['type'] = 'mp3';
$fbmedia['src'] = $attachment->url;
$fbattachment['media'][] = $fbmedia;
}else if ($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;
$fbattachment['media'][] = $fbmedia;
}else{
$fbattachment['name'] = ($attachment->title ?
$attachment->title : $attachment->url);
$fbattachment['href'] = $attachment->url;
}
return $fbattachment;
}
function remove_facebook_app($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);
}
}
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