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<?php
/**
* Helper functions
*
* @package Elgg.Core.Plugin
* @subpackage UserValidationByEmail
*/
/**
* 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";
$site = $CONFIG->site;
// Send validation email
$subject = elgg_echo('email:validate:subject', array($user->name, $site->name));
$body = elgg_echo('email:validate:body', array($user->name, $site->name, $link, $site->name, $site->url));
$result = notify_user($user->guid, $CONFIG->site->guid, $subject, $body, NULL, 'email');
if ($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, $user->email)) {
return uservalidationbyemail_set_user_validation_status($user_guid, true, 'email');
}
return false;
}
/**
* Set the validation status for a user.
*
* @param bool $status Validated (true) or false
* @param string $method Optional method to say how a user was validated
* @return bool
*/
function uservalidationbyemail_set_user_validation_status($user_guid, $status, $method = '') {
if (!$status) {
$method = '';
}
if ($status) {
if (
(create_metadata($user_guid, 'validated', $status,'', 0, ACCESS_PUBLIC)) &&
(create_metadata($user_guid, 'validated_method', $method,'', 0, ACCESS_PUBLIC))
) {
return TRUE;
}
} else {
$validated = get_metadata_byname($user_guid, 'validated');
$validated_method = get_metadata_byname($user_guid, 'validated_method');
if (
($validated) &&
($validated_method) &&
(delete_metadata($validated->id)) &&
(delete_metadata($validated_method->id))
)
return TRUE;
}
return FALSE;
}
/**
* Returns the validation status of a user.
*
* @param unknown_type $user_guid
* @return int|null
*/
function uservalidationbyemail_get_user_validation_status($user_guid) {
$md = get_metadata_byname($user_guid, 'validated');
if ($md && $md->value) {
return TRUE;
}
return FALSE;
}
/**
* Returns all users who haven't been validated.
*
* "Unvalidated" means metadata of validated is not set or not truthy.
* We can't use the elgg_get_entities_from_metadata() because you can't say
* "where the entity has metadata set OR it's not equal to 1".
*
* This doesn't include any security, so should be called ONLY be admin users!
* @return array
*/
function uservalidationbyemail_get_unvalidated_users_sql_where() {
global $CONFIG;
$validated_id = get_metastring_id('validated');
$one_id = get_metastring_id(1);
// thanks to daveb@freenode for the SQL tips!
$where = "NOT EXISTS (
SELECT 1 FROM {$CONFIG->dbprefix}metadata md
WHERE md.entity_guid = e.guid
AND md.name_id = $validated_id
AND md.value_id = $one_id)";
return $where;
}
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