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<?php
/**
* Email user validation plugin.
* Non-admin or admin created accounts are invalid until their email address is confirmed.
*
* @package ElggUserValidationByEmail
* @author Curverider Ltd
* @link http://elgg.com/
*/
function uservalidationbyemail_init() {
global $CONFIG;
// Register page handler to validate users
// This isn't an action because security is handled by the validation codes.
register_page_handler('uservalidationbyemail', 'uservalidationbyemail_page_handler');
// Register hook listening to new users.
register_elgg_event_handler('validate', 'user', 'uservalidationbyemail_email_validation');
}
/**
* Get security token, forward to action.
*
* @param unknown_type $page
* @return unknown_type
*/
function uservalidationbyemail_page_handler($page) {
if (isset($page[0]) && $page[0] == 'confirm') {
$code = sanitise_string(get_input('c', FALSE));
$user_guid = get_input('u', FALSE);
// new users are not enabled by default.
$access_status = access_get_show_hidden_status();
access_show_hidden_entities(true);
$user = get_entity($user_guid);
if (($code) && ($user)) {
if (uservalidationbyemail_validate_email($user_guid, $code)) {
system_message(elgg_echo('email:confirm:success'));
$user = get_entity($user_guid);
$user->enable();
notify_user($user_guid, $CONFIG->site->guid, sprintf(elgg_echo('email:validate:success:subject'), $user->username), sprintf(elgg_echo('email:validate:success:body'), $user->name), NULL, 'email');
} else {
register_error(elgg_echo('email:confirm:fail'));
}
} else {
register_error(elgg_echo('email:confirm:fail'));
}
access_show_hidden_entities($access_status);
} else {
register_error(elgg_echo('email:confirm:fail'));
}
forward();
}
/**
* Request email validation.
*/
function uservalidationbyemail_email_validation($event, $object_type, $object) {
if (($object) && ($object instanceof ElggUser)) {
uservalidationbyemail_request_validation($object->guid);
}
return true;
}
/**
* Generate an email activation code.
*
* @param int $user_guid The guid of the user
* @param string $email_address Email address
* @return string
*/
function uservalidationbyemail_generate_code($user_guid, $email_address) {
global $CONFIG;
// Note I bind to site URL, this is important on multisite!
return md5($user_guid . $email_address . $CONFIG->site->url . get_site_secret());
}
/**
* Request user validation email.
* Send email out to the address and request a confirmation.
*
* @param int $user_guid The user
* @return mixed
*/
function uservalidationbyemail_request_validation($user_guid) {
global $CONFIG;
$user_guid = (int)$user_guid;
$user = get_entity($user_guid);
if (($user) && ($user instanceof ElggUser)) {
// Work out validate link
$code = uservalidationbyemail_generate_code($user_guid, $user->email);
$link = "{$CONFIG->site->url}pg/uservalidationbyemail/confirm?u=$user_guid&c=$code";
// Send validation email
$result = notify_user($user->guid, $CONFIG->site->guid, sprintf(elgg_echo('email:validate:subject'), $user->username), sprintf(elgg_echo('email:validate:body'), $user->name, $link), NULL, 'email');
if ($result) {
system_message(elgg_echo('uservalidationbyemail:registerok'));
}
return $result;
}
return FALSE;
}
/**
* Validate a user
*
* @param unknown_type $user_guid
* @param unknown_type $code
* @return unknown
*/
function uservalidationbyemail_validate_email($user_guid, $code) {
$user = get_entity($user_guid);
if ($code == uservalidationbyemail_generate_code($user_guid, $user->email)) {
return set_user_validation_status($user_guid, true, 'email');
}
return false;
}
// Initialise
register_elgg_event_handler('init', 'system', 'uservalidationbyemail_init');
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