<?php
use Zotlabs\Zot6\HTTPSig;
function xchan_store_lowlevel($arr) {
if(! $arr['xchan_hash']) {
logger('No xchan_hash');
return false;
}
$store = [
'xchan_hash' => ((array_key_exists('xchan_hash',$arr)) ? $arr['xchan_hash'] : ''),
'xchan_portable_id' => ((array_key_exists('xchan_portable_id',$arr)) ? $arr['xchan_portable_id'] : ''),
'xchan_guid' => ((array_key_exists('xchan_guid',$arr)) ? $arr['xchan_guid'] : ''),
'xchan_guid_sig' => ((array_key_exists('xchan_guid_sig',$arr)) ? $arr['xchan_guid_sig'] : ''),
'xchan_pubkey' => ((array_key_exists('xchan_pubkey',$arr)) ? $arr['xchan_pubkey'] : ''),
'xchan_photo_mimetype' => ((array_key_exists('xchan_photo_mimetype',$arr)) ? $arr['xchan_photo_mimetype'] : ''),
'xchan_photo_l' => ((array_key_exists('xchan_photo_l',$arr)) ? $arr['xchan_photo_l'] : ''),
'xchan_photo_m' => ((array_key_exists('xchan_photo_m',$arr)) ? $arr['xchan_photo_m'] : ''),
'xchan_photo_s' => ((array_key_exists('xchan_photo_s',$arr)) ? $arr['xchan_photo_s'] : ''),
'xchan_addr' => ((array_key_exists('xchan_addr',$arr)) ? $arr['xchan_addr'] : ''),
'xchan_url' => ((array_key_exists('xchan_url',$arr)) ? $arr['xchan_url'] : ''),
'xchan_connurl' => ((array_key_exists('xchan_connurl',$arr)) ? $arr['xchan_connurl'] : ''),
'xchan_follow' => ((array_key_exists('xchan_follow',$arr)) ? $arr['xchan_follow'] : ''),
'xchan_connpage' => ((array_key_exists('xchan_connpage',$arr)) ? $arr['xchan_connpage'] : ''),
'xchan_name' => ((array_key_exists('xchan_name',$arr)) ? $arr['xchan_name'] : ''),
'xchan_network' => ((array_key_exists('xchan_network',$arr)) ? $arr['xchan_network'] : ''),
'xchan_instance_url' => ((array_key_exists('xchan_instance_url',$arr)) ? $arr['xchan_instance_url'] : ''),
'xchan_flags' => ((array_key_exists('xchan_flags',$arr)) ? intval($arr['xchan_flags']) : 0),
'xchan_photo_date' => ((array_key_exists('xchan_photo_date',$arr)) ? datetime_convert('UTC','UTC',$arr['xchan_photo_date']) : NULL_DATE),
'xchan_name_date' => ((array_key_exists('xchan_name_date',$arr)) ? datetime_convert('UTC','UTC',$arr['xchan_name_date']) : NULL_DATE),
'xchan_hidden' => ((array_key_exists('xchan_hidden',$arr)) ? intval($arr['xchan_hidden']) : 0),
'xchan_orphan' => ((array_key_exists('xchan_orphan',$arr)) ? intval($arr['xchan_orphan']) : 0),
'xchan_censored' => ((array_key_exists('xchan_censored',$arr)) ? intval($arr['xchan_censored']) : 0),
'xchan_selfcensored' => ((array_key_exists('xchan_selfcensored',$arr)) ? intval($arr['xchan_selfcensored']) : 0),
'xchan_system' => ((array_key_exists('xchan_system',$arr)) ? intval($arr['xchan_system']) : 0),
'xchan_pubforum' => ((array_key_exists('xchan_pubforum',$arr)) ? intval($arr['xchan_pubforum']) : 0),
'xchan_deleted' => ((array_key_exists('xchan_deleted',$arr)) ? intval($arr['xchan_deleted']) : 0)
];
return create_table_from_array('xchan',$store);
}
function xchan_store($arr) {
$update_photo = false;
$update_name = false;
if(! ($arr['guid'] || $arr['hash'])) {
$arr = json_decode(file_get_contents('php://input'),true);
}
logger('xchan_store: ' . print_r($arr,true));
if(! $arr['hash'])
$arr['hash'] = $arr['guid'];
if(! $arr['hash'])
return false;
$r = q("select * from xchan where xchan_hash = '%s' limit 1",
dbesc($arr['hash'])
);
if(! $r) {
$update_photo = true;
if(! $arr['network'])
$arr['network'] = 'unknown';
if(! $arr['name'])
$arr['name'] = 'unknown';
if(! $arr['url'])
$arr['url'] = z_root();
if(! $arr['photo'])
$arr['photo'] = z_root() . '/' . get_default_profile_photo();
if($arr['network'] === 'zot6') {
if((! $arr['key']) || (! Libzot::verify($arr['id'],$arr['id_sig'],$arr['key']))) {
logger('Unable to verify signature for ' . $arr['hash']);
return false;
}
}
if($arr['network'] === 'zot') {
if((! $arr['key']) || (! rsa_verify($arr['guid'],base64url_decode($arr['guid_sig']),$arr['key']))) {
logger('Unable to verify signature for ' . $arr['hash']);
return false;
}
}
$columns = db_columns('xchan');
$x = [];
foreach($arr as $k => $v) {
if($k === 'key') {
$x['xchan_pubkey'] = HTTPSig::convertKey(escape_tags($v));;
continue;
}
if($k === 'photo') {
continue;
}
if(in_array($columns,'xchan_' . $k))
$x['xchan_' . $k] = escape_tags($v);
}
$x['xchan_name_date'] = datetime_convert();
$x['xchan_photo_date'] = datetime_convert();
$x['xchan_system'] = false;
$result = xchan_store_lowlevel($x);
if(! $result)
return $result;
}
else {
if($r[0]['network'] === 'zot6') {
return true;
}
if($r[0]['xchan_photo_date'] < datetime_convert('UTC','UTC',$arr['photo_date'])) {
$update_photo = true;
}
if($r[0]['xchan_name_date'] < datetime_convert('UTC','UTC',$arr['name_date'])) {
$update_name = true;
}
}
if($update_photo && $arr['photo']) {
$photos = import_xchan_photo($arr['photo'],$arr['hash']);
$r = q("update xchan set xchan_photo_date = '%s', xchan_photo_l = '%s', xchan_photo_m = '%s', xchan_photo_s = '%s', xchan_photo_mimetype = '%s' where xchan_hash = '%s'",
dbesc(datetime_convert()),
dbesc($photos[0]),
dbesc($photos[1]),
dbesc($photos[2]),
dbesc($photos[3]),
dbesc($arr['hash'])
);
}
if($update_name && $arr['name']) {
$x = q("update xchan set xchan_name = '%s', xchan_name_date = '%s' where xchan_hash = '%s'",
dbesc(escape_tags($arr['name'])),
dbesc(datetime_convert()),
dbesc($arr['hash'])
);
}
return true;
}
function xchan_fetch($arr) {
$key = '';
if($arr['hash']) {
$key = 'xchan_hash';
$v = $arr['hash'];
}
elseif($arr['guid']) {
$key = 'xchan_guid';
$v = $arr['guid'];
}
elseif($arr['address']) {
$key = 'xchan_addr';
$v = $arr['address'];
}
if(! $key)
return false;
$r = q("select * from xchan where $key = '$v' limit 1");
if(! $r)
return false;
$ret = array();
foreach($r[0] as $k => $v) {
if($k === 'xchan_addr')
$ret['address'] = $v;
else
$ret[str_replace('xchan_','',$k)] = $v;
}
return $ret;
}
function xchan_keychange_table($table,$column,$oldxchan,$newxchan) {
$r = q("update $table set $column = '%s' where $column = '%s'",
dbesc($newxchan['xchan_hash']),
dbesc($oldxchan['xchan_hash'])
);
return $r;
}
function xchan_keychange_acl($table,$column,$oldxchan,$newxchan) {
$allow = (($table === 'channel') ? 'channel_allow_cid' : 'allow_cid');
$deny = (($table === 'channel') ? 'channel_deny_cid' : 'deny_cid');
$r = q("select $column, $allow, $deny from $table where ($allow like '%s' or $deny like '%s') ",
dbesc('<' . $oldxchan['xchan_hash'] . '>'),
dbesc('<' . $oldxchan['xchan_hash'] . '>')
);
if($r) {
foreach($r as $rv) {
$z = q("update $table set $allow = '%s', $deny = '%s' where $column = %d",
dbesc(str_replace('<' . $oldxchan['xchan_hash'] . '>', '<' . $newxchan['xchan_hash'] . '>',
$rv[$allow])),
dbesc(str_replace('<' . $oldxchan['xchan_hash'] . '>', '<' . $newxchan['xchan_hash'] . '>',
$rv[$deny])),
intval($rv[$column])
);
}
}
return $z;
}
function xchan_change_key($oldx,$newx,$data) {
$tables = [
'abook' => 'abook_xchan',
'abconfig' => 'xchan',
'pgrp_member' => 'xchan',
'chat' => 'chat_xchan',
'chatpresence' => 'cp_xchan',
'event' => 'event_xchan',
'item' => 'owner_xchan',
'item' => 'author_xchan',
'item' => 'source_xchan',
'mail' => 'from_xchan',
'mail' => 'to_xchan',
'shares' => 'share_xchan',
'source' => 'src_channel_xchan',
'source' => 'src_xchan',
'xchat' => 'xchat_xchan',
'xconfig' => 'xchan',
'xign' => 'xchan',
'xlink' => 'xlink_xchan',
'xprof' => 'xprof_hash',
'xtag' => 'xtag_hash'
];
$acls = [
'channel' => 'channel_id',
'attach' => 'id',
'chatroom' => 'cr_id',
'event' => 'id',
'item' => 'id',
'menu_item' => 'mitem_id',
'obj' => 'obj_id',
'photo' => 'id'
];
foreach($tables as $k => $v) {
xchan_keychange_table($k,$v,$oldx,$newx);
}
foreach($acls as $k => $v) {
xchan_keychange_acl($k,$v,$oldx,$newx);
}
}
