diff options
Diffstat (limited to 'Zotlabs/Module/Conversation.php')
| -rw-r--r-- | Zotlabs/Module/Conversation.php | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/Zotlabs/Module/Conversation.php b/Zotlabs/Module/Conversation.php new file mode 100644 index 000000000..86ce66caa --- /dev/null +++ b/Zotlabs/Module/Conversation.php @@ -0,0 +1,188 @@ +<?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)); + } +} |