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<?php
/**
* This module needs a lot of work.
*
* - setting/storing preferences
* - documentation on how to obtain FB API keys for your site
* - ensuring a valid FB login session
* - requesting permissions within the FB login session to post on your behalf until permission revoked.
*
*/
define('FACEBOOK_MAXPOSTLEN', 420);
/* declare the facebook_module function so that /facebook url requests will land here */
function facebook_module() {}
/* Callback from Facebook oauth requests. */
function facebook_init(&$a) {
if($a->argc != 2)
return;
$nick = $a->argv[1];
if(strlen($nick))
$r = q("SELECT `uid` FROM `user` WHERE `nickname` = '%s' LIMIT 1",
dbesc($nick)
);
if(! count($r))
return;
$uid = $r[0]['uid'];
$auth_code = (($_GET['code']) ? $_GET['code'] : '');
$error = (($_GET['error_description']) ? $_GET['error_description'] : '');
if($auth_code && $uid) {
$appid = get_config('facebook','appid');
$appsecret = get_config('facebook', 'appsecret');
$x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id='
. $appid . '&client_secret=' . $appsecret . '&redirect_uri='
. urlencode($a->get_baseurl() . '/facebook/' . $nick)
. '&code=' . $auth_code);
if(strpos($x,'access_token=') !== false) {
$token = str_replace('access_token=', '', $x);
if(strpos($token,'&') !== false)
$token = substr('$token,0,strpos($token,'&'));
set_pconfig($uid,'facebook','access_token',$token);
}
// todo: is this a browser session or a server session? where do we go?
}
}
function facebook_content(&$a) {
$o = "facebook module loaded";
return $o;
}
function facebook_install() {
register_hook('post_local_end', 'addon/facebook/facebook.php', 'facebook_post_hook');
}
function facebook_uninstall() {
unregister_hook('post_local_end', 'addon/facebook/facebook.php', 'facebook_post_hook');
}
function facebook_post_hook(&$a,&$b) {
/**
* Post to Facebook stream
*/
if((local_user()) && (local_user() == $b['uid']) && (! $b['private']) && (! $b['parent'])) {
$appid = get_config('facebook', 'appid' );
$secret = get_config('facebook', 'appsecret' );
if($appid && $secret) {
$fb_post = get_pconfig(local_user(),'facebook','post');
$fb_token = get_pconfig(local_user(),'facebook','access_token');
if($fb_post && $fb_token) {
require_once('library/facebook.php');
require_once('include/bbcode.php');
// make links readable before we strip the code
$msg = preg_replace('\[url\=(.?*)\](.?*)\[\/url\]/is','$2 ($1)',$msg);
$msg = preg_replace('\[img\](.?*)\[\/img\]/is', t('Image: ') . '$1',$msg);
$msg = trim(strip_tags(bbcode($b['body'])));
if (strlen($msg) > FACEBOOK_MAXPOSTLEN) {
$shortlink = "";
require_once('addon/twitter/slinky.php');
$display_url = $a->get_baseurl() . '/display/' . $a->user['nickname'] . '/' . $b['id'];
$slinky = new Slinky( $posturl );
// setup a cascade of shortening services
// try to get a short link from these services
// in the order ur1.ca, trim, id.gd, tinyurl
$slinky->set_cascade( array( new Slinky_UR1ca(), new Slinky_Trim(), new Slinky_IsGd(), new Slinky_TinyURL() ) );
$shortlink = $slinky->short();
// the new message will be shortened such that "... $shortlink"
// will fit into the character limit
$msg = substr($msg, 0, FACEBOOK_MAXPOSTLEN - strlen($shortlink) - 4);
$msg .= '... ' . $shortlink;
}
if(! strlen($msg))
return;
$facebook = new Facebook(array(
'appId' => $appid,
'secret' => $secret,
'cookie' => true
));
try {
$statusUpdate = $facebook->api('/me/feed', 'post', array('message'=> bbcode($b['body']), 'cb' => ''));
}
catch (FacebookApiException $e) {
notice( t('Facebook status update failed.') . EOL);
}
}
}
}
}
|
