Support for FB Real-Time Updates according to http://developers.facebook.com/docs/reference/api/realtime/ . Plugin needs to be deactivated and activated again in order to enable the settings

This commit is contained in:
Tobias Hößl 2012-02-26 14:45:26 +00:00
parent 2e6e68c242
commit c51ae6551d

View file

@ -76,10 +76,90 @@ function facebook_module() {}
/* If a->argv[1] is a nickname, this is a callback from Facebook oauth requests. */
// If a->argv[1] is a nickname, this is a callback from Facebook oauth requests.
// If $_REQUEST["realtime_cb"] is set, this is a callback from the Real-Time Updates API
function facebook_init(&$a) {
if (x($_REQUEST, "realtime_cb") && x($_REQUEST, "realtime_cb")) {
logger("facebook_init: Facebook Real-Time callback called", LOGGER_DEBUG);
if (x($_REQUEST["hub_verify_token"])) {
// this is the verification callback while registering for real time updates
$verify_token = get_config('facebook', 'cb_verify_token');
if ($verify_token != $_REQUEST["hub_verify_token"]) {
logger('facebook_init: Wrong Facebook Callback Verifier - expected ' . $verify_token . ', got ' . $_REQUEST["hub_verify_token"]);
return;
}
if (x($_REQUEST, "hub_challenge")) {
logger('facebook_init: Answering Challenge: ' . $_REQUEST["hub_challenge"], LOGGER_DATA);
echo $_REQUEST["hub_challenge"];
die();
}
}
require_once('include/items.php');
// this is a status update
$content = file_get_contents("php://input");
if (is_numeric($content)) $content = file_get_contents("php://input");
$js = json_decode($content);
logger(print_r($js, true), LOGGER_DATA);
if (!isset($js->object) || $js->object != "user" || !isset($js->entry)) {
logger('facebook_init: Could not parse Real-Time Update data', LOGGER_DEBUG);
return;
}
$affected_users = array("feed" => array(), "friends" => array(), "activities" => array());
foreach ($js->entry as $entry) {
$fbuser = $entry->uid;
foreach ($entry->changed_fields as $field) {
if (!isset($affected_users[$field])) {
logger('facebook_init: Unknown field "' . $field . '"');
continue;
}
if (in_array($fbuser, $affected_users[$field])) continue;
switch ($field) {
case "feed":
logger('facebook_init: FB-User ' . $fbuser . ' / feed', LOGGER_DEBUG);
$r = q("SELECT `uid` FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'self_id' AND `v` = '%s' LIMIT 1", dbesc($fbuser));
if(! count($r))
continue;
$uid = $r[0]['uid'];
$access_token = get_pconfig($uid,'facebook','access_token');
if(! $access_token)
return;
if(! get_pconfig($uid,'facebook','no_wall')) {
$private_wall = intval(get_pconfig($uid,'facebook','private_wall'));
$s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
if($s) {
$j = json_decode($s);
logger('facebook_init: wall: ' . print_r($j,true), LOGGER_DATA);
fb_consume_stream($uid,$j,($private_wall) ? false : true);
}
}
break;
case "friend":
// @TODO
break;
case "activities":
//@TODO
break;
}
$affected_users[$field][] = $fbuser;
}
}
}
if($a->argc != 2)
return;
$nick = $a->argv[1];
@ -479,6 +559,32 @@ function facebook_plugin_settings(&$a,&$b) {
}
function facebook_plugin_admin(&$a, &$o){
$activated = false;
$access_token = fb_get_app_access_token();
if ($access_token) {
$ret = facebook_subscriptions_get();
if (is_array($ret)) foreach ($ret as $re) if (is_object($re) && $re->object == "user") $activated = true;
}
if ($activated) {
$o = t('Real-Time Updates are activated.') . '<br><br>';
$o .= '<input type="submit" name="real_time_deactivate" value="' . t('Deactivate Real-Time Updates') . '">';
} else {
$o = t('Real-Time Updates not activated.') . '<br><input type="submit" name="real_time_activate" value="' . t('Activate Real-Time Updates') . '">';
}
}
function facebook_plugin_admin_post(&$a, &$o){
if (x($_REQUEST,'real_time_activate')) {
facebook_subscription_add_users();
}
if (x($_REQUEST,'real_time_deactivate')) {
facebook_subscription_del_users();
}
}
function facebook_jot_nets(&$a,&$b) {
if(! local_user())
return;
@ -1153,3 +1259,178 @@ function fb_consume_stream($uid,$j,$wall = false) {
}
}
function fb_get_app_access_token() {
$acc_token = get_config('facebook','app_access_token');
if ($acc_token !== false) return $acc_token;
$appid = get_config('facebook','appid');
$appsecret = get_config('facebook', 'appsecret');
if ($appid === false || $appsecret === false) {
logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
return false;
}
$x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . "&grant_type=client_credentials");
if(strpos($x,'access_token=') !== false) {
logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
$token = str_replace('access_token=', '', $x);
if(strpos($token,'&') !== false)
$token = substr($token,0,strpos($token,'&'));
if ($token == "") {
logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
return false;
}
set_config('facebook','app_access_token',$token);
return $token;
} else {
logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
return false;
}
}
function facebook_subscription_del_users() {
$a = get_app();
$access_token = fb_get_app_access_token();
$url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
delete_url($url);
}
function facebook_subscription_add_users() {
$a = get_app();
$access_token = fb_get_app_access_token();
$url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
list($usec, $sec) = explode(" ", microtime());
$verify_token = sha1($usec . $sec . rand(0, 999999999));
set_config('facebook', 'cb_verify_token', $verify_token);
$cb = $a->get_baseurl() . '/facebook/?realtime_cb=1';
$j = post_url($url,array(
"object" => "user",
"fields" => "feed,friends,activities",
"callback_url" => $cb,
"verify_token" => $verify_token,
));
del_config('facebook', 'cb_verify_token');
if ($j) {
logger("Facebook reponse: " . $j, LOGGER_DATA);
};
}
function facebook_subscriptions_get() {
$access_token = fb_get_app_access_token();
$url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
$j = fetch_url($url);
$ret = null;
if ($j) {
$x = json_decode($j);
if (isset($x->data)) $ret = $x->data;
}
return $ret;
}
// DELETE-request to $url
if(! function_exists('delete_url')) {
function delete_url($url,$headers = null, &$redirects = 0, $timeout = 0) {
$a = get_app();
$ch = curl_init($url);
if(($redirects > 8) || (! $ch))
return false;
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
curl_setopt($ch, CURLOPT_USERAGENT, "Friendica");
if(intval($timeout)) {
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
}
else {
$curl_time = intval(get_config('system','curl_timeout'));
curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
}
if(defined('LIGHTTPD')) {
if(!is_array($headers)) {
$headers = array('Expect:');
} else {
if(!in_array('Expect:', $headers)) {
array_push($headers, 'Expect:');
}
}
}
if($headers)
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$check_cert = get_config('system','verifyssl');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
$prx = get_config('system','proxy');
if(strlen($prx)) {
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
curl_setopt($ch, CURLOPT_PROXY, $prx);
$prxusr = get_config('system','proxyuser');
if(strlen($prxusr))
curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
}
$a->set_curl_code(0);
// don't let curl abort the entire application
// if it throws any errors.
$s = @curl_exec($ch);
$base = $s;
$curl_info = curl_getinfo($ch);
$http_code = $curl_info['http_code'];
$header = '';
// Pull out multiple headers, e.g. proxy and continuation headers
// allow for HTTP/2.x without fixing code
while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$base)) {
$chunk = substr($base,0,strpos($base,"\r\n\r\n")+4);
$header .= $chunk;
$base = substr($base,strlen($chunk));
}
if($http_code == 301 || $http_code == 302 || $http_code == 303) {
$matches = array();
preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
$url = trim(array_pop($matches));
$url_parsed = @parse_url($url);
if (isset($url_parsed)) {
$redirects++;
return delete_url($url,$headers,$redirects,$timeout);
}
}
$a->set_curl_code($http_code);
$body = substr($s,strlen($header));
$a->set_curl_headers($header);
curl_close($ch);
return($body);
}}