540 lines
14 KiB
PHP
540 lines
14 KiB
PHP
<?php
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require_once('include/crypto.php');
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/**
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*
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* @function zot_new_uid($channel_nick)
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* @channel_id = unique nickname of controlling entity
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* @returns string
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*
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*/
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function zot_new_uid($channel_nick) {
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$rawstr = z_root() . '/' . $channel_nick . '.' . mt_rand();
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return(base64url_encode(hash('whirlpool',$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_hash in ( $tmp ) $sql_extra order by hubloc_url $limit");
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}
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function zot_notify($channel,$url,$type = 'notify',$recipients = null, $remote_key = null) {
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// FIXME json encode all params
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// build the packet externally so that here we really are doing just a zot of the packet.
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$params = array(
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'type' => $type,
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'sender' => json_encode(array(
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'guid' => $channel['channel_guid'],
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'guid_sig' => base64url_encode(rsa_sign($channel['channel_guid'],$channel['channel_prvkey'])),
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'url' => z_root(),
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'url_sig' => base64url_encode(rsa_sign(z_root(),$channel['channel_prvkey']))
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)),
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'callback' => '/post',
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'version' => ZOT_REVISION
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);
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if($recipients)
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$params['recipients'] = json_encode($recipients);
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// Hush-hush ultra top-secret mode
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if($remote_key) {
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$params = aes_encapsulate($params,$remote_key);
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}
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$x = z_post_url($url,$params);
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return($x);
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}
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/*
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*
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* zot_build_packet builds a notification packet that you can either
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* store in the queue with a message array or call zot_zot to immediately
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* zot it to the other side
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*
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*/
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function zot_build_packet($channel,$type = 'notify',$recipients = null, $remote_key = null) {
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$data = array(
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'type' => $type,
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'sender' => array(
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'guid' => $channel['channel_guid'],
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'guid_sig' => base64url_encode(rsa_sign($channel['channel_guid'],$channel['channel_prvkey'])),
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'url' => z_root(),
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'url_sig' => base64url_encode(rsa_sign(z_root(),$channel['channel_prvkey']))
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),
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'callback' => '/post',
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'version' => ZOT_REVISION
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);
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if($recipients)
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$data['recipients'] = $recipients;
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// Hush-hush ultra top-secret mode
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if($remote_key) {
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$data = aes_encapsulate($data,$remote_key);
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}
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return json_encode($data);
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}
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function zot_zot($url,$data) {
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return z_post_url($url,array('data' => $data));
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}
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function zot_finger($webbie,$channel) {
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if(strpos($webbie,'@') === false) {
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$address = $webbie;
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$host = get_app()->get_hostname();
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}
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else {
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$address = substr($webbie,0,strpos($webbie,'@'));
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$host = substr($webbie,strpos($webbie,'@')+1);
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}
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$xchan_addr = $address . '@' . $host;
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$r = q("select xchan.*, hubloc.* from xchan
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left join hubloc on xchan_hash = hubloc_hash
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where xchan_addr = '%s' and (hubloc_flags & %d) limit 1",
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dbesc($xchan_address),
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intval(HUBLOC_FLAGS_PRIMARY)
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);
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if($r) {
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$url = $r[0]['hubloc_url'];
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}
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else {
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$url = 'https://' . $host;
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}
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$rhs = '/.well-known/zot-info';
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if($channel) {
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$postvars = array(
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'address' => $address,
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'target' => $channel['channel_guid'],
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'target_sig' => $channel['channel_guid_sig'],
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'key' => $channel['channel_pubkey']
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);
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$result = z_post_url($url . $rhs,$postvars);
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if(! $result['success'])
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$result = z_post_url('http://' . $host . $rhs,$postvars);
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}
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else {
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$rhs .= 'address=' . urlencode($address);
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$result = z_fetch_url($url . $rhs);
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if(! $result['success'])
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$result = z_fetch_url('http://' . $host . $rhs);
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}
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return $result;
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}
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function zot_refresh($them,$channel = null) {
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if($them['hubloc_url'])
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$url = $them['hubloc_url'];
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else {
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$r = q("select hubloc_url from hubloc where hubloc_hash = '%s' and hubloc_flags & %d limit 1",
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dbesc($them['xchan_hash']),
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intval(HUBLOC_FLAGS_PRIMARY)
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);
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if($r)
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$url = $r[0]['hubloc_url'];
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}
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if(! $url)
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return;
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$postvars = array();
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if($channel) {
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$postvars['target'] = $channel['channel_guid'];
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$postvars['target_sig'] = $channel['channel_guid_sig'];
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$postvars['key'] = $channel['channel_pubkey'];
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}
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if(array_key_exists('xchan_addr',$them) && $them['xchan_addr'])
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$postvars['address'] = $them['xchan_addr'];
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if(array_key_exists('xchan_hash',$them) && $them['xchan_hash'])
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$postvars['guid_hash'] = $them['xchan_hash'];
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if(array_key_exists('xchan_guid',$them) && $them['xchan_guid']
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&& array_key_exists('xchan_guid_sig',$them) && $them['xchan_guid_sig']) {
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$postvars['guid'] = $them['xchan_guid'];
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$postvars['guid_sig'] = $them['xchan_guid_sig'];
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}
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$rhs = '/.well-known/zot-info';
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$result = z_post_url($url . $rhs,$postvars);
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if($result['success']) {
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$j = json_decode($result['body']);
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$x = import_xchan_from_json($j);
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if(! $x['success'])
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return $x;
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$xchan_hash = $x['hash'];
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$their_perms = 0;
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if($channel) {
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$global_perms = get_perms();
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if($j->permissions->data) {
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$permissions = aes_unencapsulate(array(
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'data' => $j->permissions->data,
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'key' => $j->permissions->key,
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'iv' => $j->permissions->iv),
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$channel['channel_prvkey']);
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if($permissions)
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$permissions = json_decode($permissions);
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logger('decrypted permissions: ' . print_r($permissions,true), LOGGER_DATA);
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}
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else
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$permissions = $j->permissions;
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foreach($permissions as $k => $v) {
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if($v) {
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$their_perms = $their_perms | intval($global_perms[$k][1]);
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}
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}
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$r = q("update abook set abook_their_perms = %d
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where abook_xchan = '%s' and abook_channel = %d
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and not (abook_flags & %d) limit 1",
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intval($their_perms),
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dbesc($x['hash']),
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intval($channel['channel_id']),
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intval(ABOOK_FLAG_SELF)
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);
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if(! $r)
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logger('abook update failed');
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}
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return true;
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}
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return false;
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}
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function zot_gethub($jarr) {
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if($jarr->guid && $jarr->guid_sig && $jarr->url && $jarr->url_sig) {
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$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($jarr->guid),
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dbesc($jarr->guid_sig),
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dbesc($jarr->url),
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dbesc($jarr->url_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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$result = array('success' => false);
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if($arr->hub && $arr->hub_sig && $arr->guid && $arr->guid_sig) {
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$guid_hash = base64url_encode(hash('whirlpool',$arr->guid . $arr->guid_sig, true));
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$x = z_fetch_url($arr->hub . '/.well-known/zot-info/?f=&hash=' . $guid_hash);
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if($x['success']) {
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$record = json_decode($x['body']);
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$c = import_xchan_from_json($record);
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if($c['success'])
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$result['success'] = true;
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}
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}
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return $result;
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}
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// Takes a json array from zot_finger and imports the xchan and hublocs
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// If the xchan already exists, update the name and photo if these have changed.
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//
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function import_xchan_from_json($j) {
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$ret = array('success' => false);
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$xchan_hash = base64url_encode(hash('whirlpool',$j->guid . $j->guid_sig, true));
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$import_photos = false;
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if(! rsa_verify($j->guid,base64url_decode($j->guid_sig),$j->key)) {
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logger('import_xchan_from_json: Unable to verify channel signature for ' . $j->address);
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$ret['message'] = t('Unable to verify channel signature');
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return $ret;
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}
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$r = q("select * from xchan where xchan_hash = '%s' limit 1",
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dbesc($xchan_hash)
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);
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if($r) {
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if($r[0]['xchan_photo_date'] != $j->photo_updated)
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$update_photos = true;
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if($r[0]['xchan_name_date'] != $j->name_updated) {
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$r = q("update xchan set xchan_name = '%s', xchan_name_date = '%s' where xchan_hash = '%s' limit 1",
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dbesc($j->name),
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dbesc($j->name_updated),
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dbesc($xchan_hash)
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);
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}
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}
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else {
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$import_photos = true;
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$x = q("insert into xchan ( xchan_hash, xchan_guid, xchan_guid_sig, xchan_pubkey, xchan_photo_mimetype,
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xchan_photo_l, xchan_addr, xchan_url, xchan_name, xchan_network, xchan_photo_date, xchan_name_date)
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values ( '%s', '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
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dbesc($xchan_hash),
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dbesc($j->guid),
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dbesc($j->guid_sig),
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dbesc($j->key),
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dbesc($j->photo_mimetype),
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dbesc($j->photo),
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dbesc($j->address),
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dbesc($j->url),
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dbesc($j->name),
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dbesc('zot'),
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dbesc($j->photo_updated),
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dbesc($j->name_updated)
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);
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}
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if($import_photos) {
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require_once("Photo.php");
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$photos = import_profile_photo($j->photo,0,$xchan_hash);
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$r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s'
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where xchan_hash = '%s' limit 1",
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dbesc($j->photo_updated),
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dbesc($photos[0]),
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dbesc($photos[1]),
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dbesc($photos[2]),
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dbesc($photos[3]),
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dbesc($xchan_hash)
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);
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}
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if($j->locations) {
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foreach($j->locations as $location) {
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if(! rsa_verify($location->url,base64url_decode($location->url_sig),$j->key)) {
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logger('import_xchan_from_json: Unable to verify site signature for ' . $location->url);
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$ret['message'] .= sprintf( t('Unable to verify site signature for %s'), $location->url) . EOL;
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continue;
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}
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$r = q("select * from hubloc where hubloc_hash = '%s' and hubloc_url = '%s' limit 1",
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dbesc($xchan_hash),
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dbesc($location->url)
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);
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if($r) {
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if(($r[0]['hubloc_flags'] & HUBLOC_FLAGS_PRIMARY) && (! $location->primary)) {
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$r = q("update hubloc set hubloc_flags = (hubloc_flags ^ %d) where hubloc_id = %d limit 1",
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intval(HUBLOC_FLAGS_PRIMARY),
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intval($r[0]['hubloc_id'])
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);
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}
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continue;
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}
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$r = q("insert into hubloc ( hubloc_guid, hubloc_guid_sig, hubloc_hash, hubloc_addr, hubloc_flags, hubloc_url, hubloc_url_sig, hubloc_host, hubloc_callback, hubloc_sitekey)
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values ( '%s','%s','%s','%s', %d ,'%s','%s','%s','%s','%s')",
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dbesc($j->guid),
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dbesc($j->guid_sig),
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dbesc($xchan_hash),
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dbesc($location->address),
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intval((intval($location->primary)) ? HUBLOC_FLAGS_PRIMARY : 0),
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dbesc($location->url),
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dbesc($location->url_sig),
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dbesc($location->host),
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dbesc($location->callback),
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dbesc($location->sitekey)
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);
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}
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}
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if(! x($ret,'message')) {
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$ret['success'] = true;
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$ret['hash'] = $xchan_hash;
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}
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return $ret;
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}
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// Takes a json associative array from zot_finger and imports the xchan and hublocs
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// If the xchan already exists, update the name and photo if these have changed.
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//
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function import_xchan($j) {
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$ret = array('success' => false);
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$xchan_hash = base64url_encode(hash('whirlpool',$j['guid'] . $j['guid_sig'], true));
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$import_photos = false;
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if(! rsa_verify($j['guid'],base64url_decode($j['guid_sig']),$j['key'])) {
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logger('import_xchan_from_json: Unable to verify channel signature for ' . $j['address']);
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$ret['message'] = t('Unable to verify channel signature');
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return $ret;
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}
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$r = q("select * from xchan where xchan_hash = '%s' limit 1",
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dbesc($xchan_hash)
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);
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if($r) {
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if($r[0]['xchan_photo_date'] != $j['photo_updated'])
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$update_photos = true;
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if($r[0]['xchan_name_date'] != $j['name_updated']) {
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$r = q("update xchan set xchan_name = '%s', xchan_name_date = '%s' where xchan_hash = '%s' limit 1",
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dbesc($j['name']),
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dbesc($j['name_updated']),
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dbesc($xchan_hash)
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);
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}
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}
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else {
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$import_photos = true;
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$x = q("insert into xchan ( xchan_hash, xchan_guid, xchan_guid_sig, xchan_pubkey, xchan_photo_mimetype,
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xchan_photo_l, xchan_addr, xchan_url, xchan_name, xchan_network, xchan_photo_date, xchan_name_date)
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values ( '%s', '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s') ",
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dbesc($xchan_hash),
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dbesc($j['guid']),
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dbesc($j['guid_sig']),
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dbesc($j['key']),
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dbesc($j['photo_mimetype']),
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dbesc($j['photo']),
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dbesc($j['address']),
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dbesc($j['url']),
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dbesc($j['name']),
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dbesc('zot'),
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dbesc($j['photo_updated']),
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dbesc($j['name_updated'])
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);
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}
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if($import_photos) {
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require_once("Photo.php");
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$photos = import_profile_photo($j['photo'],0,$xchan_hash);
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$r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s'
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where xchan_hash = '%s' limit 1",
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dbesc($j['photo_updated']),
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dbesc($photos[0]),
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dbesc($photos[1]),
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dbesc($photos[2]),
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dbesc($photos[3]),
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dbesc($xchan_hash)
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);
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}
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if($j['locations']) {
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foreach($j['locations'] as $location) {
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if(! rsa_verify($location['url'],base64url_decode($location['url_sig']),$j['key'])) {
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logger('import_xchan_from_json: Unable to verify site signature for ' . $location['url']);
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$ret['message'] .= sprintf( t('Unable to verify site signature for %s'), $location['url']) . EOL;
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continue;
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}
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$r = q("select * from hubloc where hubloc_hash = '%s' and hubloc_url = '%s' limit 1",
|
|
dbesc($xchan_hash),
|
|
dbesc($location['url'])
|
|
);
|
|
if($r) {
|
|
if(($r[0]['hubloc_flags'] & HUBLOC_FLAGS_PRIMARY) && (! $location['primary'])) {
|
|
$r = q("update hubloc set hubloc_flags = (hubloc_flags ^ %d) where hubloc_id = %d limit 1",
|
|
intval(HUBLOC_FLAGS_PRIMARY),
|
|
intval($r[0]['hubloc_id'])
|
|
);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
$r = q("insert into hubloc ( hubloc_guid, hubloc_guid_sig, hubloc_hash, hubloc_addr, hubloc_flags, hubloc_url, hubloc_url_sig, hubloc_host, hubloc_callback, hubloc_sitekey)
|
|
values ( '%s','%s','%s','%s', %d ,'%s','%s','%s','%s','%s')",
|
|
dbesc($j['guid']),
|
|
dbesc($j['guid_sig']),
|
|
dbesc($xchan_hash),
|
|
dbesc($location['address']),
|
|
intval((intval($location['primary'])) ? HUBLOC_FLAGS_PRIMARY : 0),
|
|
dbesc($location['url']),
|
|
dbesc($location['url_sig']),
|
|
dbesc($location['host']),
|
|
dbesc($location['callback']),
|
|
dbesc($location['sitekey'])
|
|
);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if(! x($ret,'message')) {
|
|
$ret['success'] = true;
|
|
$ret['hash'] = $xchan_hash;
|
|
}
|
|
return $ret;
|
|
}
|
|
|