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<?php
namespace Zotlabs\Module;
/**
*
* Controller for responding to x-zot: protocol requests
* x-zot:_jkfRG85nJ-714zn-LW_VbTFW8jSjGAhAydOcJzHxqHkvEHWG2E0RbA_pbch-h4R63RG1YJZifaNzgccoLa3MQ/453c1678-1a79-4af7-ab65-6b012f6cab77
*
*/
use Zotlabs\Lib\Activity;
use Zotlabs\Lib\ActivityStreams;
use Zotlabs\Lib\LDSignatures;
use Zotlabs\Zot6\HTTPSig;
use Zotlabs\Web\Controller;
use Zotlabs\Lib\Libzot;
use Zotlabs\Lib\ThreadListener;
use Zotlabs\Lib\IConfig;
use Zotlabs\Lib\Enotify;
use App;
require_once('include/attach.php');
require_once('include/bbcode.php');
require_once('include/security.php');
class Id extends Controller {
function init() {
if(Libzot::is_zot_request()) {
$conversation = false;
$request_portable_id = argv(1);
if(argc() > 2) {
$item_id = argv(2);
}
$portable_id = EMPTY_STR;
$sigdata = HTTPSig::verify(EMPTY_STR);
if($sigdata['portable_id'] && $sigdata['header_valid']) {
$portable_id = $sigdata['portable_id'];
}
$r = q("select channel_id, channel_address from channel where channel_hash = '%s' limit 1",
dbesc($request_portable_id)
);
if($r) {
$channel_id = $r[0]['channel_id'];
if(! $item_id) {
$handler = new Channel();
App::$argc = 2;
App::$argv[0] = 'channel';
App::$argv[1] = $r[0]['channel_address'];
$handler->init();
}
}
else {
http_status_exit(404, 'Not found');
}
$item_normal = " and item.item_hidden = 0 and item.item_type = 0 and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_blocked = 0 ";
$sql_extra = item_permissions_sql(0);
$r = q("select * from item where mid like '%s' $item_normal $sql_extra and uid = %d limit 1",
dbesc('%/' . $item_id),
intval($channel_id)
);
if(! $r) {
$r = q("select * from item where mid like '%s' $item_normal and uid = %d limit 1",
dbesc('%/' . $item_id),
intval($channel_id)
);
if($r) {
http_status_exit(403, 'Forbidden');
}
http_status_exit(404, 'Not found');
}
$items = q("select parent as item_id from item where mid = '%s' and uid = %d $item_normal $sql_extra ",
dbesc($r[0]['parent_mid']),
intval($r[0]['uid'])
);
if(! $items) {
http_status_exit(404, 'Not found');
}
$r = $items;
$parents_str = ids_to_querystr($r,'item_id');
$items = q("SELECT item.*, item.id AS item_id FROM item WHERE item.parent IN ( %s ) $item_normal $sql_extra ",
dbesc($parents_str)
);
if(! $items) {
http_status_exit(404, 'Not found');
}
$r = $items;
xchan_query($r,true);
$items = fetch_post_tags($r,true);
$observer = App::get_observer();
$parent = $items[0];
$recips = (($parent['owner']['xchan_network'] === 'activitypub') ? get_iconfig($parent['id'],'activitypub','recips', []) : []);
$to = (($recips && array_key_exists('to',$recips) && is_array($recips['to'])) ? $recips['to'] : null);
$nitems = [];
foreach($items as $i) {
$mids = [];
if(intval($i['item_private'])) {
if(! $observer) {
continue;
}
// ignore private reshare, possibly from hubzilla
if($i['verb'] === 'Announce') {
if(! in_array($i['thr_parent'],$mids)) {
$mids[] = $i['thr_parent'];
}
continue;
}
// also ignore any children of the private reshares
if(in_array($i['thr_parent'],$mids)) {
continue;
}
if((! $to) || (! in_array($observer['xchan_url'],$to))) {
continue;
}
}
$nitems[] = $i;
}
if(! $nitems)
http_status_exit(404, 'Not found');
$chan = channelx_by_n($nitems[0]['uid']);
if(! $chan)
http_status_exit(404, 'Not found');
if(! perm_is_allowed($chan['channel_id'],get_observer_hash(),'view_stream'))
http_status_exit(403, 'Forbidden');
$i = Activity::encode_item_collection($nitems,'conversation/' . $item_id,'OrderedCollection',( defined('NOMADIC') ? false : true));
if($portable_id) {
ThreadListener::store(z_root() . '/item/' . $item_id,$portable_id);
}
if(! $i)
http_status_exit(404, 'Not found');
$x = array_merge(['@context' => [
ACTIVITYSTREAMS_JSONLD_REV,
'https://w3id.org/security/v1',
z_root() . ZOT_APSCHEMA_REV
]], $i);
$headers = [];
$headers['Content-Type'] = 'application/x-zot+json' ;
$x['signature'] = LDSignatures::sign($x,$chan);
$ret = json_encode($x, JSON_UNESCAPED_SLASHES);
$headers['Digest'] = HTTPSig::generate_digest_header($ret);
$headers['(request-target)'] = strtolower($_SERVER['REQUEST_METHOD']) . ' ' . $_SERVER['REQUEST_URI'];
$h = HTTPSig::create_sig($headers,$chan['channel_prvkey'],channel_url($chan));
HTTPSig::set_headers($h);
echo $ret;
killme();
}
}
}
|
