From 2a287e6def5ab54037222c963ab0875faf62fc1a Mon Sep 17 00:00:00 2001
From: zotlabs <mike@macgirvin.com>
Date: Tue, 14 Jan 2020 13:29:45 -0800
Subject: event compatibility work

---
 Zotlabs/Lib/Activity.php    |  45 +++++++++---
 Zotlabs/Module/Activity.php | 175 ++++++++++++++++++++++++++++++++++++++++++++
 Zotlabs/Module/Event.php    |  76 +++++++++++++++++++
 Zotlabs/Module/Item.php     |   2 -
 Zotlabs/Module/Like.php     |   9 ++-
 include/event.php           |  10 ++-
 6 files changed, 300 insertions(+), 17 deletions(-)
 create mode 100644 Zotlabs/Module/Activity.php
 create mode 100644 Zotlabs/Module/Event.php

diff --git a/Zotlabs/Lib/Activity.php b/Zotlabs/Lib/Activity.php
index a0956c501..a99bb36e4 100644
--- a/Zotlabs/Lib/Activity.php
+++ b/Zotlabs/Lib/Activity.php
@@ -168,6 +168,10 @@ class Activity {
 		if($r) {
 			xchan_query($r,true);
 			$r = fetch_post_tags($r,true);
+			if ($r[0]['verb'] === 'Create' && $r[0]['obj_type'] === ACTIVITY_OBJ_EVENT) {
+				$r[0]['verb'] = 'Invite';
+				return self::encode_activity($r[0]);
+			}
 			return self::encode_item($r[0]);
 		}
 	}
@@ -220,7 +224,7 @@ class Activity {
 					'startTime' => (($ev['adjust']) ? datetime_convert($ev['timezone'],'UTC',$ev['dtstart'], ATOM_TIME) : datetime_convert('UTC','UTC',$ev['dtstart'],'Y-m-d\\TH:i:s-00:00')),
 					'content'   => bbcode($ev['description'], [ 'cache' => true ]),
 					'location'  => [ 'type' => 'Place', 'content' => bbcode($ev['location'], [ 'cache' => true ]) ],
-					'source'    => [ 'content' => format_event_bbcode($ev), 'mediaType' => 'text/bbcode' ],
+					'source'    => [ 'content' => format_event_bbcode($ev,true), 'mediaType' => 'text/bbcode' ],
 					'actor'     => $actor,
 				];
 				if(! $ev['nofinish']) {
@@ -825,7 +829,8 @@ class Activity {
 			'http://activitystrea.ms/schema/1.0/unfollow'  => 'Unfollow',
 			'http://purl.org/zot/activity/attendyes'       => 'Accept',
 			'http://purl.org/zot/activity/attendno'        => 'Reject',
-			'http://purl.org/zot/activity/attendmaybe'     => 'TentativeAccept'
+			'http://purl.org/zot/activity/attendmaybe'     => 'TentativeAccept',
+			'Invite'                                       => 'Invite',
 		];
 
 		call_hooks('activity_mapper',$acts);
@@ -871,7 +876,8 @@ class Activity {
 			'http://activitystrea.ms/schema/1.0/unfollow'  => 'Unfollow',
 			'http://purl.org/zot/activity/attendyes'       => 'Accept',
 			'http://purl.org/zot/activity/attendno'        => 'Reject',
-			'http://purl.org/zot/activity/attendmaybe'     => 'TentativeAccept'
+			'http://purl.org/zot/activity/attendmaybe'     => 'TentativeAccept',
+			'Invite'                                       => 'Invite',
 		];
 
 		call_hooks('activity_decode_mapper',$acts);
@@ -905,6 +911,7 @@ class Activity {
 			'http://purl.org/zot/activity/thing'                => 'Object',
 			'http://purl.org/zot/activity/file'                 => 'zot:File',
 			'http://purl.org/zot/activity/mood'                 => 'zot:Mood',
+			'Invite'                                            => 'Invite',
 		
 		];
 
@@ -944,7 +951,7 @@ class Activity {
 			'http://purl.org/zot/activity/thing'                => 'Object',
 			'http://purl.org/zot/activity/file'                 => 'zot:File',
 			'http://purl.org/zot/activity/mood'                 => 'zot:Mood',
-		
+			'Invite'                                            => 'Invite',		
 		];
 
 		call_hooks('activity_obj_mapper',$objs);
@@ -1714,28 +1721,42 @@ class Activity {
 			$s['obj_type'] = ACTIVITY_OBJ_COMMENT;
 		}
 
+		$eventptr = null;
+
+		if ($act->obj['type'] === 'Invite' && array_path_exists('object/type',$act->obj) && $act->obj['object']['type'] === 'Event') {
+			$eventptr = $act->obj['object'];
+			$s['mid'] = $s['parent_mid'] = $act->obj['id'];
+		}
+		
 		if($act->obj['type'] === 'Event') {
+			if ($act->type === 'Invite') {
+				$s['mid'] = $s['parent_mid'] = $act->id;
+			}
+			$eventptr = $act->obj;
+		}
+
+		if ($eventptr) {
 
 			$s['obj'] = [];
-			$s['obj']['asld'] = $act->obj;
+			$s['obj']['asld'] = $eventptr;
 			$s['obj']['type'] = ACTIVITY_OBJ_EVENT;
-			$s['obj']['id'] = $act->obj['id'];
-			$s['obj']['title'] = $act->obj['name'];
+			$s['obj']['id'] = $eventptr['id'];
+			$s['obj']['title'] = $eventptr['name'];
 
 			if(strpos($act->obj['startTime'],'Z'))
 				$s['obj']['adjust'] = true;
 			else
 				$s['obj']['adjust'] = false;
 
-			$s['obj']['dtstart'] = datetime_convert('UTC','UTC',$act->obj['startTime']);
+			$s['obj']['dtstart'] = datetime_convert('UTC','UTC',$eventptr['startTime']);
 			if($act->obj['endTime']) 
-				$s['obj']['dtend'] = datetime_convert('UTC','UTC',$act->obj['endTime']);
+				$s['obj']['dtend'] = datetime_convert('UTC','UTC',$eventptr['endTime']);
 			else
 				$s['obj']['nofinish'] = true;
-			$s['obj']['description'] = $act->obj['content'];
+			$s['obj']['description'] = $eventptr['content'];
 
-			if(array_path_exists('location/content',$act->obj))
-				$s['obj']['location'] = $act->obj['location']['content'];
+			if(array_path_exists('location/content',$eventptr))
+				$s['obj']['location'] = $eventptr['location']['content'];
 
 		}
 		else {
diff --git a/Zotlabs/Module/Activity.php b/Zotlabs/Module/Activity.php
new file mode 100644
index 000000000..93b5a15fc
--- /dev/null
+++ b/Zotlabs/Module/Activity.php
@@ -0,0 +1,175 @@
+<?php
+namespace Zotlabs\Module;
+
+use Zotlabs\Lib\IConfig;
+use Zotlabs\Lib\Enotify;
+use Zotlabs\Web\Controller;
+use Zotlabs\Daemon\Master;
+use Zotlabs\Lib\Activity as ZlibActivity;
+use Zotlabs\Lib\ActivityStreams;
+use Zotlabs\Lib\LDSignatures;
+use Zotlabs\Web\HTTPSig;
+use Zotlabs\Lib\Libzot;
+use Zotlabs\Lib\ThreadListener;
+use App;
+
+
+class Activity extends Controller {
+
+	function init() {
+
+		if (Libzot::is_zot_request()) {
+
+			$item_id = argv(1);
+
+			if (! $item_id)
+				http_status_exit(404, 'Not found');
+
+			$portable_id = EMPTY_STR;
+
+			$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 ";
+
+			$i = null;
+
+			// do we have the item (at all)?
+
+			$r = q("select * from item where mid = '%s' $item_normal limit 1",
+				dbesc(z_root() . '/activity/' . $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'])
+						);
+					}
+				}
+			}
+
+			// 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');
+	
+			$items = q("SELECT item.*, item.id AS item_id FROM item WHERE item.parent IN ( %s ) $item_normal ",
+				dbesc($parents_str)
+			);
+
+			if(! $items) {
+				http_status_exit(404, 'Not found');
+			}
+
+			xchan_query($items,true);
+			$items = fetch_post_tags($items,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');
+
+			$i = ZlibActivity::encode_item_collection($nitems,'conversation/' . $item_id,'OrderedCollection');
+			if($portable_id) {
+				ThreadListener::store(z_root() . '/activity/' . $item_id,$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();
+
+		}
+
+	}
+
+}
diff --git a/Zotlabs/Module/Event.php b/Zotlabs/Module/Event.php
new file mode 100644
index 000000000..22a1341cc
--- /dev/null
+++ b/Zotlabs/Module/Event.php
@@ -0,0 +1,76 @@
+<?php
+namespace Zotlabs\Module;
+
+use Zotlabs\Web\Controller;
+use Zotlabs\Lib\ActivityStreams;
+use Zotlabs\Lib\Activity;
+use Zotlabs\Lib\LDSignatures;
+use Zotlabs\Web\HTTPSig;
+
+class Event extends Controller {
+
+	function init() {
+
+		if(ActivityStreams::is_as_request()) {
+			$item_id = argv(1);
+
+			if(! $item_id)
+				return;
+
+			$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 limit 1",
+				dbesc(z_root() . '/activity/' . $item_id . '%')
+			);
+
+			if(! $r) {
+				$r = q("select * from item where mid like '%s' $item_normal limit 1",
+					dbesc(z_root() . '/activity/' . $item_id . '%')
+				);
+
+				if($r) {
+					http_status_exit(403, 'Forbidden');
+				}
+				http_status_exit(404, 'Not found');
+			}
+
+			xchan_query($r,true);
+			$items = fetch_post_tags($r,true);
+
+			$channel = channelx_by_n($items[0]['uid']);
+
+			if(! is_array($items[0]['obj'])) {
+				$obj = json_decode($items[0]['obj'],true);
+			}
+			else {
+				$obj = $items[0]['obj'];
+			}
+
+			$x = array_merge(['@context' => [
+				ACTIVITYSTREAMS_JSONLD_REV,
+				'https://w3id.org/security/v1',
+				z_root() . ZOT_APSCHEMA_REV
+				]], $obj );
+
+			$headers = [];
+			$headers['Content-Type'] = 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"' ;
+			$x['signature'] = LDSignatures::sign($x,$channel);
+			$ret = json_encode($x, JSON_UNESCAPED_SLASHES);
+			$headers['Date'] = datetime_convert('UTC','UTC', 'now', 'D, d M Y H:i:s \\G\\M\\T');
+			$headers['Digest'] = HTTPSig::generate_digest_header($ret);
+			$headers['(request-target)'] = strtolower($_SERVER['REQUEST_METHOD']) . ' ' . $_SERVER['REQUEST_URI'];
+
+			$h = HTTPSig::create_sig($headers,$channel['channel_prvkey'],channel_url($channel));
+			HTTPSig::set_headers($h);
+
+			echo $ret;
+			killme();
+
+		}
+
+	}
+
+}
\ No newline at end of file
diff --git a/Zotlabs/Module/Item.php b/Zotlabs/Module/Item.php
index 14881844d..1a25e54df 100644
--- a/Zotlabs/Module/Item.php
+++ b/Zotlabs/Module/Item.php
@@ -42,8 +42,6 @@ class Item extends Controller {
 
 		if (Libzot::is_zot_request()) {
 
-			$conversation = false;
-
 			$item_id = argv(1);
 
 			if (! $item_id)
diff --git a/Zotlabs/Module/Like.php b/Zotlabs/Module/Like.php
index 052d51d43..ff7554b7e 100644
--- a/Zotlabs/Module/Like.php
+++ b/Zotlabs/Module/Like.php
@@ -75,7 +75,12 @@ class Like extends \Zotlabs\Web\Controller {
 			return EMPTY_STR; 
 		}
 
-	
+		$is_rsvp = false;
+		if (in_array($activity, [ ACTVITY_ATTEND, ACTIVITY_ATTENDNO, ACTIVITY_ATTENDMAYBE ])) {
+			$is_rsvp = true;
+		}
+
+
 		$extended_like = false;
 		$object = $target = null;
 		$post_type = EMPTY_STR;
@@ -381,7 +386,7 @@ class Like extends \Zotlabs\Web\Controller {
 		$arr = array();
 	
 		$arr['uuid']  = $uuid;
-		$arr['mid'] = z_root() . '/item/' . $uuid;
+		$arr['mid'] = z_root() . (($is_rsvp) ? '/activity/' : '/item/') . $uuid;
 
 		if($extended_like) {
 			$arr['item_thread_top'] = 1;
diff --git a/include/event.php b/include/event.php
index 30dca2df2..59057e7d5 100644
--- a/include/event.php
+++ b/include/event.php
@@ -250,7 +250,7 @@ function format_ical_sourcetext($s) {
 }
 
 
-function format_event_bbcode($ev) {
+function format_event_bbcode($ev, $utc = false) {
 
 	$o = '';
 
@@ -258,6 +258,14 @@ function format_event_bbcode($ev) {
 		$o .= '[event]' . $ev['event_vdata'] . '[/event]';
 	}
 
+	if ($utc && $ev['event-timezone'] !== 'UTC') {
+		$ev['dtstart'] = datetime_convert($ev['timezone'],'UTC',$ev['dtstart'],ATOM_TIME);
+		if ($ev['dtend'] && ! $ev['nofinish']) {
+			$ev['dtend'] = datetime_convert($ev['timezone'],'UTC',$ev['dtend'],ATOM_TIME);
+		}
+		$ev['timezone'] = 'UTC';
+	}
+
 	if($ev['summary'])
 		$o .= '[event-summary]' . $ev['summary'] . '[/event-summary]';
 
-- 
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