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<?php
/**
*
* @function zot_new_uid($entity_id)
* @entity_id = integer id of controlling entity
* @returns string
*
*/
function zot_new_uid($entity_id) {
$rawstr = z_root() . '/' . $entity_id . '.' . mt_rand();
return(base64url_encode(hash('whirlpool',$rawstr,true),true));
}
/**
*
* Given an array of zot_uid(s), return all distinct hubs
* If primary is true, return only primary hubs
* Result is ordered by url to assist in batching.
*
*/
function zot_get_hubloc($arr,$primary) {
$tmp = '';
if(is_array($arr)) {
foreach($arr as $e) {
if(strlen($tmp))
$tmp .= ',';
$tmp .= "'" . dbesc($e) . "'" ;
}
}
if(! strlen($tmp))
return array();
$sql_extra = (($primary) ? " and hubloc_primary = 1 " : "" );
return q("select * from hubloc where hubloc_zuid in ( $tmp ) $sql_extra order by hubloc_url");
}
// Given an item and an identity, sign the data.
function zot_sign(&$item,$identity) {
$item['signed'] = str_replace(array(" ","\t","\n","\r"),array('','','',''),base64url_encode($item['body'],true));
$item['signature'] = base64url_encode(rsa_sign($item['signed'],$identity['prvkey']));
}
// Given an item and an identity, verify the signature.
function zot_verify(&$item,$identity) {
return rsa_verify($item[signed'],base64url_decode($item['signature']),$identity['pubkey']);
}
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