forked from friendica/friendica-addons
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
parent
2e6e68c242
commit
c51ae6551d
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@ -76,10 +76,90 @@ function facebook_module() {}
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/* If a->argv[1] is a nickname, this is a callback from Facebook oauth requests. */
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// If a->argv[1] is a nickname, this is a callback from Facebook oauth requests.
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// If $_REQUEST["realtime_cb"] is set, this is a callback from the Real-Time Updates API
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function facebook_init(&$a) {
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if (x($_REQUEST, "realtime_cb") && x($_REQUEST, "realtime_cb")) {
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logger("facebook_init: Facebook Real-Time callback called", LOGGER_DEBUG);
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if (x($_REQUEST["hub_verify_token"])) {
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// this is the verification callback while registering for real time updates
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$verify_token = get_config('facebook', 'cb_verify_token');
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if ($verify_token != $_REQUEST["hub_verify_token"]) {
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logger('facebook_init: Wrong Facebook Callback Verifier - expected ' . $verify_token . ', got ' . $_REQUEST["hub_verify_token"]);
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return;
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}
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if (x($_REQUEST, "hub_challenge")) {
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logger('facebook_init: Answering Challenge: ' . $_REQUEST["hub_challenge"], LOGGER_DATA);
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echo $_REQUEST["hub_challenge"];
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die();
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}
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}
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require_once('include/items.php');
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// this is a status update
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$content = file_get_contents("php://input");
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if (is_numeric($content)) $content = file_get_contents("php://input");
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$js = json_decode($content);
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logger(print_r($js, true), LOGGER_DATA);
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if (!isset($js->object) || $js->object != "user" || !isset($js->entry)) {
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logger('facebook_init: Could not parse Real-Time Update data', LOGGER_DEBUG);
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return;
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}
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$affected_users = array("feed" => array(), "friends" => array(), "activities" => array());
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foreach ($js->entry as $entry) {
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$fbuser = $entry->uid;
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foreach ($entry->changed_fields as $field) {
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if (!isset($affected_users[$field])) {
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logger('facebook_init: Unknown field "' . $field . '"');
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continue;
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}
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if (in_array($fbuser, $affected_users[$field])) continue;
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switch ($field) {
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case "feed":
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logger('facebook_init: FB-User ' . $fbuser . ' / feed', LOGGER_DEBUG);
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$r = q("SELECT `uid` FROM `pconfig` WHERE `cat` = 'facebook' AND `k` = 'self_id' AND `v` = '%s' LIMIT 1", dbesc($fbuser));
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if(! count($r))
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continue;
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$uid = $r[0]['uid'];
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$access_token = get_pconfig($uid,'facebook','access_token');
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if(! $access_token)
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return;
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if(! get_pconfig($uid,'facebook','no_wall')) {
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$private_wall = intval(get_pconfig($uid,'facebook','private_wall'));
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$s = fetch_url('https://graph.facebook.com/me/feed?access_token=' . $access_token);
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if($s) {
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$j = json_decode($s);
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logger('facebook_init: wall: ' . print_r($j,true), LOGGER_DATA);
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fb_consume_stream($uid,$j,($private_wall) ? false : true);
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}
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}
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break;
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case "friend":
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// @TODO
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break;
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case "activities":
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//@TODO
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break;
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}
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$affected_users[$field][] = $fbuser;
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}
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}
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}
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if($a->argc != 2)
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return;
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$nick = $a->argv[1];
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@ -479,6 +559,32 @@ function facebook_plugin_settings(&$a,&$b) {
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}
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function facebook_plugin_admin(&$a, &$o){
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$activated = false;
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$access_token = fb_get_app_access_token();
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if ($access_token) {
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$ret = facebook_subscriptions_get();
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if (is_array($ret)) foreach ($ret as $re) if (is_object($re) && $re->object == "user") $activated = true;
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}
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if ($activated) {
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$o = t('Real-Time Updates are activated.') . '<br><br>';
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$o .= '<input type="submit" name="real_time_deactivate" value="' . t('Deactivate Real-Time Updates') . '">';
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} else {
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$o = t('Real-Time Updates not activated.') . '<br><input type="submit" name="real_time_activate" value="' . t('Activate Real-Time Updates') . '">';
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}
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}
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function facebook_plugin_admin_post(&$a, &$o){
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if (x($_REQUEST,'real_time_activate')) {
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facebook_subscription_add_users();
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}
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if (x($_REQUEST,'real_time_deactivate')) {
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facebook_subscription_del_users();
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}
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}
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function facebook_jot_nets(&$a,&$b) {
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if(! local_user())
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return;
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@ -1153,3 +1259,178 @@ function fb_consume_stream($uid,$j,$wall = false) {
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}
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}
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function fb_get_app_access_token() {
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$acc_token = get_config('facebook','app_access_token');
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if ($acc_token !== false) return $acc_token;
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$appid = get_config('facebook','appid');
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$appsecret = get_config('facebook', 'appsecret');
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if ($appid === false || $appsecret === false) {
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logger('fb_get_app_access_token: appid and/or appsecret not set', LOGGER_DEBUG);
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return false;
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}
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$x = fetch_url('https://graph.facebook.com/oauth/access_token?client_id=' . $appid . '&client_secret=' . $appsecret . "&grant_type=client_credentials");
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if(strpos($x,'access_token=') !== false) {
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logger('fb_get_app_access_token: returned access token: ' . $x, LOGGER_DATA);
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$token = str_replace('access_token=', '', $x);
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if(strpos($token,'&') !== false)
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$token = substr($token,0,strpos($token,'&'));
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if ($token == "") {
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logger('fb_get_app_access_token: empty token: ' . $x, LOGGER_DEBUG);
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return false;
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}
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set_config('facebook','app_access_token',$token);
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return $token;
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} else {
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logger('fb_get_app_access_token: response did not contain an access_token: ' . $x, LOGGER_DATA);
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return false;
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}
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}
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function facebook_subscription_del_users() {
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$a = get_app();
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$access_token = fb_get_app_access_token();
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$url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
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delete_url($url);
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}
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function facebook_subscription_add_users() {
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$a = get_app();
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$access_token = fb_get_app_access_token();
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$url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
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list($usec, $sec) = explode(" ", microtime());
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$verify_token = sha1($usec . $sec . rand(0, 999999999));
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set_config('facebook', 'cb_verify_token', $verify_token);
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$cb = $a->get_baseurl() . '/facebook/?realtime_cb=1';
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$j = post_url($url,array(
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"object" => "user",
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"fields" => "feed,friends,activities",
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"callback_url" => $cb,
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"verify_token" => $verify_token,
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));
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del_config('facebook', 'cb_verify_token');
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if ($j) {
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logger("Facebook reponse: " . $j, LOGGER_DATA);
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};
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}
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function facebook_subscriptions_get() {
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$access_token = fb_get_app_access_token();
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$url = "https://graph.facebook.com/" . get_config('facebook', 'appid' ) . "/subscriptions?access_token=" . $access_token;
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$j = fetch_url($url);
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$ret = null;
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if ($j) {
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$x = json_decode($j);
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if (isset($x->data)) $ret = $x->data;
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}
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return $ret;
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}
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// DELETE-request to $url
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if(! function_exists('delete_url')) {
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function delete_url($url,$headers = null, &$redirects = 0, $timeout = 0) {
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$a = get_app();
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$ch = curl_init($url);
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if(($redirects > 8) || (! $ch))
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return false;
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curl_setopt($ch, CURLOPT_HEADER, true);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
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curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "DELETE");
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curl_setopt($ch, CURLOPT_USERAGENT, "Friendica");
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if(intval($timeout)) {
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curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
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}
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else {
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$curl_time = intval(get_config('system','curl_timeout'));
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curl_setopt($ch, CURLOPT_TIMEOUT, (($curl_time !== false) ? $curl_time : 60));
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}
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if(defined('LIGHTTPD')) {
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if(!is_array($headers)) {
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$headers = array('Expect:');
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} else {
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if(!in_array('Expect:', $headers)) {
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array_push($headers, 'Expect:');
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}
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}
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}
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if($headers)
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curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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$check_cert = get_config('system','verifyssl');
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, (($check_cert) ? true : false));
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$prx = get_config('system','proxy');
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if(strlen($prx)) {
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curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
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curl_setopt($ch, CURLOPT_PROXY, $prx);
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$prxusr = get_config('system','proxyuser');
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if(strlen($prxusr))
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curl_setopt($ch, CURLOPT_PROXYUSERPWD, $prxusr);
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}
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$a->set_curl_code(0);
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// don't let curl abort the entire application
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// if it throws any errors.
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$s = @curl_exec($ch);
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$base = $s;
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$curl_info = curl_getinfo($ch);
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$http_code = $curl_info['http_code'];
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$header = '';
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// Pull out multiple headers, e.g. proxy and continuation headers
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// allow for HTTP/2.x without fixing code
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while(preg_match('/^HTTP\/[1-2].+? [1-5][0-9][0-9]/',$base)) {
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$chunk = substr($base,0,strpos($base,"\r\n\r\n")+4);
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$header .= $chunk;
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$base = substr($base,strlen($chunk));
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}
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if($http_code == 301 || $http_code == 302 || $http_code == 303) {
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$matches = array();
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preg_match('/(Location:|URI:)(.*?)\n/', $header, $matches);
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$url = trim(array_pop($matches));
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$url_parsed = @parse_url($url);
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if (isset($url_parsed)) {
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$redirects++;
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return delete_url($url,$headers,$redirects,$timeout);
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}
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}
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$a->set_curl_code($http_code);
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$body = substr($s,strlen($header));
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$a->set_curl_headers($header);
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curl_close($ch);
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return($body);
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}}
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