<?php namespace Zotlabs\Module; use Zotlabs\Web\Controller; use Zotlabs\Lib\ActivityStreams; use Zotlabs\Lib\Activity; use Zotlabs\Lib\Libzot; use Zotlabs\Web\HTTPSig; use Zotlabs\Lib\LDSignatures; use Zotlabs\Lib\ThreadListener; use Zotlabs\Lib\Config; use App; class Conversation extends Controller { public function init() { if (ActivityStreams::is_as_request()) { $item_id = argv(1); if (!$item_id) { http_status_exit(404, 'Not found'); } $portable_id = EMPTY_STR; $item_normal_extra = sprintf(" and not verb in ('%s', '%s') ", dbesc(ACTIVITY_FOLLOW), dbesc(ACTIVITY_UNFOLLOW) ); $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 $item_normal_extra "; $i = null; // do we have the item (at all)? $r = q("select parent_mid from item where mid = '%s' or uuid = '%s' $item_normal order by item_wall desc limit 1", dbesc(z_root() . '/item/' . $item_id), dbesc($item_id) ); if (!$r) { http_status_exit(404, 'Not found'); } // process an authenticated fetch $sigdata = HTTPSig::verify(EMPTY_STR); if ($sigdata['portable_id'] && $sigdata['header_valid']) { $portable_id = $sigdata['portable_id']; observer_auth($portable_id); // first see if we have a copy of this item's parent owned by the current signer // include xchans for all zot-like networks - these will have the same guid and public key $x = q( "select * from xchan where xchan_hash = '%s'", dbesc($sigdata['portable_id']) ); if ($x) { $xchans = q( "select xchan_hash from xchan where xchan_hash = '%s' OR ( xchan_guid = '%s' AND xchan_pubkey = '%s' ) ", dbesc($sigdata['portable_id']), dbesc($x[0]['xchan_guid']), dbesc($x[0]['xchan_pubkey']) ); if ($xchans) { $hashes = ids_to_querystr($xchans, 'xchan_hash', true); $i = q( "select id as item_id from item where mid = '%s' $item_normal and owner_xchan in ( " . protect_sprintf($hashes) . " ) limit 1", dbesc($r[0]['parent_mid']) ); } } } elseif (Config::get('system', 'require_authenticated_fetch', false)) { http_status_exit(403, 'Permission denied'); } // if we don't have a parent id belonging to the signer see if we can obtain one as a visitor that we have permission to access // with a bias towards those items owned by channels on this site (item_wall = 1) $sql_extra = item_permissions_sql(0); if (!$i) { $i = q("select id as item_id from item where mid = '%s' $item_normal $sql_extra order by item_wall desc limit 1", dbesc($r[0]['parent_mid']) ); } if (!$i) { http_status_exit(403, 'Forbidden'); } $parents_str = ids_to_querystr($i, 'item_id'); $itemspage = 30; $page = $_REQUEST['page'] ?? 1; $offset = (intval($page) - 1) * $itemspage; $items = dbq("SELECT item.*, item.id AS item_id, (SELECT count(*) FROM item WHERE item.parent IN ( $parents_str ) $item_normal) AS total FROM item WHERE item.parent IN ( $parents_str ) $item_normal order by item.id LIMIT $itemspage OFFSET $offset" ); if (!$items) { http_status_exit(404, 'Not found'); } xchan_query($items, true); $items = fetch_post_tags($items); $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'); } App::set_pager_total($nitems[0]['total']); App::set_pager_itemspage($itemspage); $channel = channelx_by_n($nitems[0]['uid']); if (!$channel) { http_status_exit(404, 'Not found'); } if (!perm_is_allowed($channel['channel_id'], get_observer_hash(), 'view_stream')) { http_status_exit(403, 'Forbidden'); } $i = Activity::encode_item_collection($nitems, App::$query_string, 'OrderedCollection', $nitems[0]['total']); if (!$i) { http_status_exit(404, 'Not found'); } if ($portable_id && (!intval($nitems[0]['item_private']))) { $c = q("select abook_id from abook where abook_channel = %d and abook_xchan = '%s'", intval($nitems[0]['uid']), dbesc($portable_id) ); if (!$c) { ThreadListener::store(z_root() . '/item/' . $item_id, $portable_id); } } as_return_and_die($i, $channel); } goaway(z_root() . '/item/' . argv(1)); } }