/**
* Get called during system init
*
* @return void
*/
function socialink_init()
{
// register classes
elgg_register_classes(dirname(__FILE__) . "/vendors/oauth/classes");
elgg_register_class("LinkedIn", dirname(__FILE__) . "/vendors/simple_linkedin/linkedin_3.1.1.class.php");
// register SociaLink libraries
elgg_register_library("socialink:facebook", dirname(__FILE__) . "/lib/networks/facebook.php");
elgg_register_library("socialink:linkedin", dirname(__FILE__) . "/lib/networks/linkedin.php");
elgg_register_library("socialink:twitter", dirname(__FILE__) . "/lib/networks/twitter.php");
elgg_register_library("socialink:wordpress", dirname(__FILE__) . "/lib/networks/wordpress.php");
// extend CSS
elgg_extend_view("css/elgg", "socialink/css/site");
elgg_extend_view("css/admin", "socialink/css/admin");
// extend JS
elgg_extend_view("js/elgg", "socialink/js");
// extend login box
elgg_extend_view("forms/login", "socialink/login");
// register page handler
elgg_register_page_handler("socialink", "socialink_page_handler");
// register event handlers
//register_elgg_event_handler("create", "object", "socialink_create_object_handler");
elgg_register_event_handler("login:after", "user", "socialink_login_user_handler", 450);
// hooks
elgg_register_plugin_hook_handler("socialink:sync", "user", "socialink_sync_network_hook");
elgg_register_plugin_hook_handler("public_pages", "walled_garden", "socialink_walled_garden_hook");
elgg_register_plugin_hook_handler("register", "user", "socialink_register_user_hook", 450);
// register actions
elgg_register_action("socialink/remove", dirname(__FILE__) . "/actions/remove.php");
elgg_register_action("socialink/create_user", dirname(__FILE__) . "/actions/create_user.php", "public");
elgg_register_action("socialink/share", dirname(__FILE__) . "/actions/share.php");
// load necesary files
socialink_load_networks();
// twitter in
if (elgg_is_active_plugin("thewire") && socialink_is_available_network("twitter")) {
$setting = elgg_get_plugin_setting("twitter_allow_in", "socialink");
switch ($setting) {
case "fifteenmin":
case "halfhour":
elgg_register_plugin_hook_handler("cron", $setting, "socialink_twitter_in_cron_hook");
break;
}
}
}
/**
* Listen to the login event
*
* @param string $event the name of the event
* @param string $type the type of the event
* @param ElggUser $entity supplied entity
*
* @return void
*/
function socialink_login_user_handler($event, $type, $entity)
{
if (empty($entity) || !elgg_instanceof($entity, "user")) {
return;
}
// check if the user wishes to link a network
$link_network = get_input("socialink_link_network");
if (!empty($link_network) && socialink_is_available_network($link_network)) {
switch ($link_network) {
case "twitter":
socialink_twitter_authorize($entity->getGUID());
break;
case "facebook":
socialink_facebook_authorize($entity->getGUID());
break;
case "linkedin":
socialink_linkedin_authorize($entity->getGUID());
break;
case "wordpress":
socialink_wordpress_authorize($entity->getGUID());
break;
}
unset($_SESSION["socialink_token"]);
// sync network data
elgg_trigger_plugin_hook("socialink:sync", "user", array("user" => $entity, "network" => $link_network));
}
// check if network connections are still valid
$networks = socialink_get_user_networks($entity->getGUID());
if (empty($networks)) {
return;
}
foreach ($networks as $network) {
$response = socialink_validate_network($network, $entity->getGUID());
if ($response === false) {
// disconnect from this network and report to user
$function = "socialink_" . $network . "_remove_connection";
if (is_callable($function)) {
call_user_func($function, $entity->getGUID());
register_error(sprintf(elgg_echo("socialink:network_invalid"), elgg_echo("socialink:network:" . $network)));
}
}
}
}
/**
* Synchronize social network information to a profile
*
* @param string $hook_name the name of the hook
* @param string $entity_type the type of the hook
* @param mixed $return_value current return value
* @param array $params supplied params
*
* @return void
*/
function socialink_sync_network_hook($hook_name, $entity_type, $return_value, $params)
{
if (!empty($params) && is_array($params)) {
if (isset($params["user"]) && isset($params["network"])) {
$user = $params["user"];
$network = $params["network"];
if (socialink_is_available_network($network)) {
switch ($network) {
case "twitter":
socialink_twitter_sync_profile_metadata($user->getGUID());
break;
case "linkedin":
socialink_linkedin_sync_profile_metadata($user->getGUID());
break;
case "facebook":
socialink_facebook_sync_profile_metadata($user->getGUID());
break;
}
}
}
}
}
/**
* The socialink page handler
*
* @param array $page page elements
*
* @return bool
*/
function socialink_page_handler($page)
{
$result = false;
switch ($page[0]) {
case "authorize":
elgg_gatekeeper();
$user = elgg_get_logged_in_user_entity();
switch ($page[1]) {
case "twitter":
case "linkedin":
case "facebook":
case "wordpress":
if (call_user_func("socialink_" . $page[1] . "_authorize")) {
system_message(elgg_echo("socialink:authorize:success", array(elgg_echo("socialink:network:" . $page[1]))));
} else {
register_error(elgg_echo("socialink:authorize:failed", array(elgg_echo("socialink:network:" . $page[1]))));
}
break;
}
if (!empty($page[1]) && socialink_is_available_network($page[1])) {
elgg_trigger_plugin_hook("socialink:sync", "user", array("user" => $user, "network" => $page[1]));
}
forward("settings/plugins/" . $user->username . "/socialink");
break;
case "login":
if (elgg_is_logged_in() || !isset($page[1])) {
// invalid input
forward();
}
$network = $page[1];
$network_name = elgg_echo("socialink:network:" . $network);
$error_msg_no_user = elgg_echo("socialink:login:error:no_user", array($network_name, $network_name));
if (!socialink_is_available_network($network)) {
// unavailable network
forward();
}
// find hidden users (just created)
$access_status = access_get_show_hidden_status();
access_show_hidden_entities(true);
switch ($network) {
case "twitter":
$token = socialink_twitter_get_access_token(get_input("oauth_verifier"));
if (!isset($token["oauth_token"]) || !isset($token["oauth_token_secret"])) {
register_error($error_msg_no_user);
break;
}
$params = array("type" => "user", "limit" => 1, "site_guids" => false, "plugin_id" => "socialink", "plugin_user_setting_name_value_pairs" => array("twitter_oauth_token" => $token["oauth_token"], "twitter_oauth_secret" => $token["oauth_token_secret"]));
$users = elgg_get_entities_from_plugin_user_settings($params);
if (!empty($users)) {
$user = $users[0];
} else {
$_SESSION["socialink_token"] = $token;
forward("socialink/no_linked_account/twitter");
}
break;
case "linkedin":
$token = socialink_linkedin_get_access_token(get_input("oauth_verifier"));
if (!isset($token["oauth_token"]) || !isset($token["oauth_token_secret"])) {
register_error($error_msg_no_user);
break;
}
$params = array("type" => "user", "limit" => 1, "site_guids" => false, "plugin_id" => "socialink", "plugin_user_setting_name_value_pairs" => array("linkedin_oauth_token" => $token["oauth_token"], "linkedin_oauth_secret" => $token["oauth_token_secret"]));
$users = elgg_get_entities_from_plugin_user_settings($params);
if (!empty($users)) {
$user = $users[0];
} else {
$_SESSION["socialink_token"] = $token;
forward("socialink/no_linked_account/linkedin");
}
break;
case "facebook":
$token = socialink_facebook_get_access_token();
if (empty($token)) {
register_error($error_msg_no_user);
break;
}
$user_id = socialink_facebook_get_user_id_from_access_token($token);
if (empty($user_id)) {
register_error($error_msg_no_user);
break;
}
$params = array("type" => "user", "limit" => 1, "site_guids" => false, "plugin_id" => "socialink", "plugin_user_setting_name_value_pairs" => array("facebook_user_id" => $user_id));
$users = elgg_get_entities_from_plugin_user_settings($params);
if (!empty($users)) {
$user = $users[0];
} else {
$_SESSION["socialink_token"] = $token;
forward("socialink/no_linked_account/facebook");
}
break;
case "wordpress":
$token = socialink_wordpress_get_access_token(get_input("oauth_token"));
if (isset($token['oauth_token']) && isset($token['oauth_token_secret'])) {
if ($userdata = socialink_wordpress_get_user_data_from_token($token)) {
$params = array("type" => "user", "limit" => 1, "site_guids" => false, "plugin_id" => "socialink", "plugin_user_setting_name_value_pairs" => array("wordpress_userid" => $userdata->ID));
if ($users = elgg_get_entities_from_plugin_user_settings($params)) {
$user = $users[0];
socialink_wordpress_update_connection($token, $user->getGUID());
} else {
$_SESSION["socialink_token"] = $token;
forward("socialink/no_linked_account/wordpress");
}
}
} else {
register_error($error_msg_no_user);
}
break;
}
if (!empty($user) && elgg_instanceof($user, "user")) {
try {
// permanent login
login($user, true);
// log last network
elgg_set_plugin_user_setting("last_login_network", $network, $user->getGUID(), "socialink");
// sync network data
elgg_trigger_plugin_hook("socialink:sync", "user", array("user" => $user, "network" => $network));
// set message and forward to correct page
system_message(elgg_echo("loginok"));
if (isset($_SESSION["last_forward_from"]) && $_SESSION["last_forward_from"]) {
$forward_url = $_SESSION["last_forward_from"];
unset($_SESSION["last_forward_from"]);
forward($forward_url);
} elseif (get_input("returntoreferer")) {
forward(REFERER);
} else {
forward();
}
} catch (LoginException $e) {
// validation mechanisme should report that you are not authenticated. Currently uservalidation by email doesn't do that
//register_error($e->getMessage());
forward();
}
}
// restore hidden status
access_show_hidden_entities($access_status);
forward();
break;
case "no_linked_account":
if (elgg_is_logged_in()) {
forward();
}
switch ($page[1]) {
case "linkedin":
case "facebook":
case "twitter":
case "wordpress":
$result = true;
set_input("network", $page[1]);
include dirname(dirname(__FILE__)) . "/pages/no_linked_account.php";
break;
}
break;
case "share":
elgg_gatekeeper();
$result = true;
include dirname(dirname(__FILE__)) . "/pages/share.php";
break;
case "forward":
if (!isset($page[1]) && !isset($page[2])) {
// invalid input
break;
}
$network = $page[1];
$action = $page[2];
$allowed_actions = array("login", "authorize");
if (!socialink_is_available_network($network) || !in_array($action, $allowed_actions)) {
// unavailable network or unsupported action
break;
}
if ($action == "login") {
socialink_prepare_login();
}
$callback_url = elgg_get_site_url() . "socialink/" . $action . "/" . $network;
$forward_url = "";
switch ($network) {
case "linkedin":
$forward_url = socialink_linkedin_get_authorize_url($callback_url);
break;
case "facebook":
$forward_url = socialink_facebook_get_authorize_url($callback_url);
break;
case "twitter":
$forward_url = socialink_twitter_get_authorize_url($callback_url);
break;
case "wordpress":
$forward_url = socialink_wordpress_get_authorize_url($callback_url);
break;
}
forward($forward_url);
break;
}
return $result;
}
<?php
gatekeeper();
$service = get_input("service");
if (socialink_is_supported_network($service)) {
$network_string = elgg_echo("socialink:network:" . $service);
if (socialink_is_available_network($service)) {
if (call_user_func("socialink_" . $service . "_is_connected")) {
if (call_user_func("socialink_" . $service . "_remove_connection")) {
system_message(elgg_echo("socialink:actions:remove:success", array($network_string)));
} else {
register_error(elgg_echo("socialink:actions:remove:error:remove", array($network_string)));
}
} else {
register_error(elgg_echo("socialink:actions:remove:error:connected", array($network_string)));
}
} else {
register_error(elgg_echo("socialink:actions:remove:error:unavailable", array($network_string)));
}
} else {
register_error(elgg_echo("socialink:actions:remove:error:unknown_service"));
}
forward(REFERER);
/**
* Get the profile field configuration for a social network
*
* @param string $network the name of the social network
*
* @return bool|array
*/
function socialink_get_configured_network_fields($network)
{
$result = false;
if (!empty($network) && socialink_is_available_network($network)) {
if (($fields = socialink_get_network_fields($network)) && !empty($fields)) {
$temp = array();
foreach ($fields as $setting_name => $network_name) {
if (($profile_field = elgg_get_plugin_setting($network . "_profile_" . $setting_name, "socialink")) && !empty($profile_field)) {
$result[$setting_name] = $profile_field;
}
}
if (!empty($temp)) {
$result = $temp;
}
}
}
return $result;
}
