/**
* Checks if a user wants to change his email address and sends out a confirmation message
*
* @return void
*/
function security_tools_prepare_email_change()
{
$user_guid = (int) get_input("guid");
$email = get_input("email");
if (empty($user_guid)) {
$user_guid = elgg_get_logged_in_user_guid();
}
$user = get_user($user_guid);
if (empty($user) || !is_email_address($email)) {
register_error(elgg_echo("email:save:fail"));
return;
}
if (strcmp($email, $user->email) == 0) {
// no change is email address
return;
}
if (get_user_by_email($email)) {
register_error(elgg_echo("registration:dupeemail"));
return;
}
// generate validation code
$validation_code = security_tools_generate_email_code($user, $email);
if (empty($validation_code)) {
return;
}
$site = elgg_get_site_entity();
$current_email = $user->email;
// make sure notification goed to new email
$user->email = $email;
$user->save();
// build notification
$validation_url = $site->url . "email_change_confirmation?u=" . $user->getGUID() . "&c=" . $validation_code;
$subject = elgg_echo("security_tools:notify_user:email_change_request:subject", array($site->name));
$message = elgg_echo("security_tools:notify_user:email_change_request:message", array($user->name, $site->name, $validation_url));
notify_user($user->getGUID(), $site->getGUID(), $subject, $message, null, "email");
// save the validation request
// but first revoke previous request
$user->deleteAnnotations("email_change_confirmation");
$user->annotate("email_change_confirmation", $email, ACCESS_PRIVATE, $user->getGUID());
// restore current email address
$user->email = $current_email;
$user->save();
system_message(elgg_echo("security_tools:usersettings:email:request", array($email)));
}
if (empty($user_guid) || empty($validation_code)) {
register_error(elgg_echo("error:missing_data"));
forward();
}
$user = elgg_get_logged_in_user_entity();
if ($user_guid != $user->getGUID() || !$user->canEdit()) {
register_error(elgg_echo("security_tools:email_change_confirmation:error:user"));
forward();
}
$new_email = $user->getAnnotations("email_change_confirmation");
if (empty($new_email)) {
register_error(elgg_echo("security_tools:email_change_confirmation:error:request"));
forward();
}
$new_email = $new_email[0]->value;
$valid_code = security_tools_generate_email_code($user, $new_email);
if ($validation_code !== $valid_code) {
register_error(elgg_echo("security_tools:email_change_confirmation:error:code"));
forward();
}
$site = elgg_get_site_entity();
// send confirmation to old email that change occured
$subject = elgg_echo("security_tools:notify_user:email_change:subject", array($site->name));
$message = elgg_echo("security_tools:notify_user:email_change:message", array($user->name, $site->name));
notify_user($user->getGUID(), $site->getGUID(), $subject, $message, null, "email");
$user->email = $new_email;
if ($user->save()) {
$user->deleteAnnotations("email_change_confirmation");
$forward_url = $user->getURL();
system_message(elgg_echo("email:save:success"));
} else {