129 lines
3.3 KiB
PHP
129 lines
3.3 KiB
PHP
<?php
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/**
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*
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* @function zot_new_uid($entity_nick)
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* @entity_id = unique nickname of controlling entity
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* @returns string
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*
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*/
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function zot_new_uid($entity_nick) {
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$rawstr = z_root() . '/' . $entity_nick . '.' . mt_rand();
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return(base64url_encode(hash('whirlpool',$rawstr,true),true));
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}
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/**
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*
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* Given an array of zot_uid(s), return all distinct hubs
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* If primary is true, return only primary hubs
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* Result is ordered by url to assist in batching.
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* Return only the first primary hub as there should only be one.
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*
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*/
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function zot_get_hubloc($arr,$primary = false) {
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$tmp = '';
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if(is_array($arr)) {
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foreach($arr as $e) {
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if(strlen($tmp))
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$tmp .= ',';
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$tmp .= "'" . dbesc($e) . "'" ;
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}
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}
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if(! strlen($tmp))
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return array();
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$sql_extra = (($primary) ? " and hubloc_flags & " . intval(HUBLOC_FLAGS_PRIMARY) : "" );
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$limit = (($primary) ? " limit 1 " : "");
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return q("select * from hubloc where hubloc_guid in ( $tmp ) $sql_extra order by hubloc_url $limit");
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}
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// Given an item and an identity, sign the data.
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function zot_sign(&$item,$identity) {
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$item['signed'] = str_replace(array(" ","\t","\n","\r"),array('','','',''),base64url_encode($item['body'],true));
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$item['signature'] = base64url_encode(rsa_sign($item['signed'],$identity['prvkey']));
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}
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// Given an item and an identity, verify the signature.
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function zot_verify(&$item,$identity) {
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return rsa_verify($item['signed'],base64url_decode($item['signature']),$identity['pubkey']);
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}
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function zot_notify($entity,$url) {
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$x = z_post_url($url, array(
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'type' => 'notify',
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'guid' => $entity['entity_global_id'],
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'guid_sig' => base64url_encode($guid,$entity['prvkey']),
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'hub' => z_root(),
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'hub_sig' => base64url_encode(z_root,$entity['prvkey']),
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'callback' => '/post',
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'spec' => ZOT_REVISION)
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);
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return($x);
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}
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function zot_gethub($arr) {
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if((x($arr,'guid')) && (x($arr,'guid_sig')) && (x($arr,'hub')) && (x($arr,'hub_sig'))) {
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$r = q("select * from hubloc
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where hubloc_guid = '%s' and hubloc_guid_sig = '%s'
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and hubloc_url = '%s' and hubloc_url_sig = '%s'
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limit 1",
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dbesc($arr['guid']),
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dbesc($arr['guid_sig']),
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dbesc($arr['hub']),
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dbesc($arr['hub_sig'])
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);
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if($r && count($r))
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return $r[0];
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}
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return null;
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}
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function zot_register_hub($arr) {
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$total = 0;
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if((x($arr,'hub')) && (x($arr,'guid'))) {
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$x = z_fetch_url($arr['hub'] . '/.well-known/zot-guid/' . $arr['guid']);
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if($x['success']) {
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$record = json_decode($x['body']);
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if($record->hub && count($record->hub)) {
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foreach($record->hub as $h) {
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// store any hubs we don't know about
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if( ! zot_gethub(
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array('guid' => $arr['guid'],
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'guid_sig' => $arr['guid_sig'],
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'hub' => $h->url,
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'hub_sig' => $h->url_sig))) {
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$r = q("insert into hubloc (hubloc_guid, hubloc_guid_sig, hubloc_flags, hubloc_url,
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hubloc_url_sig, hubloc_callback, hubloc_sitekey, hubloc_key)
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values ( '%s', '%s', %d, '%s', '%s', '%s', '%s', '%s' )",
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dbesc($arr['guid']),
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dbesc($arr['guid_sig']),
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intval((($h->primary) ? HUBLOC_FLAGS_PRIMARY : 0) | HUBLOC_FLAGS_UNVERIFIED ),
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dbesc($h->url),
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dbesc($h->url_sig),
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dbesc($h->callback),
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dbesc($h->sitekey),
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dbesc($record->key)
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);
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if($r)
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$total ++;
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}
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}
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}
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}
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}
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return $total;
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}
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