/**
* 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;
}
/**
* Create a user based on Wordpress information
*
* @param string $token Wordpress access token
*
* @return bool|ElggUser
*/
function socialink_wordpress_create_user($token)
{
$result = false;
if (!empty($token) && is_array($token)) {
if ($userdata = socialink_wordpress_get_user_data_from_token($token)) {
$email = $userdata->email;
if (!get_user_by_email($email) && is_email_address($email)) {
$username = $userdata->username;
$displayname = $userdata->displayname;
// show hidden entities
$access = access_get_show_hidden_status();
access_show_hidden_entities(true);
// check if the WordPress username is available on Elgg
if (get_user_by_username($username)) {
// make a new username based on the email address
$username = socialink_create_username_from_email($email);
}
$pwd = generate_random_cleartext_password();
try {
if ($user_guid = register_user($username, $pwd, $displayname, $email)) {
if ($user = get_user($user_guid)) {
// save user tokens
elgg_set_plugin_user_setting("wordpress_userid", $userdata->ID, $user_guid, "socialink");
elgg_set_plugin_user_setting("wordpress_oauth_token", $token["oauth_token"], $user_guid, "socialink");
elgg_set_plugin_user_setting("wordpress_oauth_secret", $token["oauth_token_secret"], $user_guid, "socialink");
// trigger hook for registration
$params = array("user" => $user, "password" => $pwd, "friend_guid" => 0, "invitecode" => "");
if (elgg_trigger_plugin_hook("register", "user", $params, true) !== false) {
// return the user
$result = $user;
}
}
}
} catch (Exception $e) {
//echo $e->getMessage();
}
// restore hidden entities
access_show_hidden_entities($access);
} else {
register_error(elgg_echo("socialink:networks:create_user:error:email"));
}
}
}
return $result;
}
