bring some Zot6 libraries and interfaces to red/hubzilla

1 files changed, 266 insertions, 0 deletions

diff --git a/Zotlabs/Zot6/Zot6Handler.php b/Zotlabs/Zot6/Zot6Handler.php
new file mode 100644
index 000000000..5597921cc
--- /dev/null
+++ b/Zotlabs/Zot6/Zot6Handler.php
@@ -0,0 +1,266 @@
+<?php
+
+namespace Zotlabs\Zot6;
+
+use Zotlabs\Lib\Libzot;
+use Zotlabs\Lib\Queue;
+
+class Zot6Handler implements IHandler {
+
+	function Notify($data,$hub) {
+		return self::reply_notify($data,$hub);
+	}
+
+	function Request($data,$hub) {
+		return self::reply_message_request($data,$hub);
+	}
+
+	function Rekey($sender,$data,$hub) {
+		return self::reply_rekey_request($sender,$data,$hub);
+	}
+
+	function Refresh($sender,$recipients,$hub) {
+		return self::reply_refresh($sender,$recipients,$hub);
+	}
+
+	function Purge($sender,$recipients,$hub) {
+		return self::reply_purge($sender,$recipients,$hub);
+	}
+
+
+	// Implementation of specific methods follows;
+	// These generally do a small amout of validation and call Libzot 
+	// to do any heavy lifting
+
+	static function reply_notify($data,$hub) {
+
+		$ret = [ 'success' => false ];
+
+		logger('notify received from ' . $hub['hubloc_url']);
+
+		$x = Libzot::fetch($data);
+		$ret['delivery_report'] = $x;
+	
+
+		$ret['success'] = true;
+		return $ret;
+	}
+
+
+
+	/**
+	 * @brief Remote channel info (such as permissions or photo or something)
+	 * has been updated. Grab a fresh copy and sync it.
+	 *
+	 * The difference between refresh and force_refresh is that force_refresh
+	 * unconditionally creates a directory update record, even if no changes were
+	 * detected upon processing.
+	 *
+	 * @param array $sender
+	 * @param array $recipients
+	 *
+	 * @return json_return_and_die()
+	 */
+
+	static function reply_refresh($sender, $recipients,$hub) {
+		$ret = array('success' => false);
+
+		if($recipients) {
+
+			// This would be a permissions update, typically for one connection
+
+			foreach ($recipients as $recip) {
+				$r = q("select channel.*,xchan.* from channel
+					left join xchan on channel_hash = xchan_hash
+					where channel_hash ='%s' limit 1",
+					dbesc($recip)
+				);
+
+				$x = Libzot::refresh( [ 'hubloc_id_url' => $hub['hubloc_id_url'] ], $r[0], (($msgtype === 'force_refresh') ? true : false));
+			}
+		}
+		else {
+			// system wide refresh
+
+			$x = Libzot::refresh( [ 'hubloc_id_url' => $hub['hubloc_id_url'] ], null, (($msgtype === 'force_refresh') ? true : false));
+		}
+
+		$ret['success'] = true;
+		return $ret;
+	}
+
+
+
+	/**
+	 * @brief Process a message request.
+	 *
+	 * If a site receives a comment to a post but finds they have no parent to attach it with, they
+	 * may send a 'request' packet containing the message_id of the missing parent. This is the handler
+	 * for that packet. We will create a message_list array of the entire conversation starting with
+	 * the missing parent and invoke delivery to the sender of the packet.
+	 *
+	 * Zotlabs/Daemon/Deliver.php (for local delivery) and 
+	 * mod/post.php???? @fixme (for web delivery) detect the existence of
+	 * this 'message_list' at the destination and split it into individual messages which are
+	 * processed/delivered in order.
+	 *
+	 *
+	 * @param array $data
+	 * @return array
+	 */
+	
+	static function reply_message_request($data,$hub) {
+		$ret = [ 'success' => false ];
+
+		$message_id = EMPTY_STR;
+
+		if(array_key_exists('data',$data))
+		$ptr = $data['data'];
+		if(is_array($ptr) && array_key_exists(0,$ptr)) {
+			$ptr = $ptr[0];
+		}
+		if(is_string($ptr)) {
+			$message_id = $ptr;
+		}
+		if(is_array($ptr) && array_key_exists('id',$ptr)) {
+			$message_id = $ptr['id'];
+		}
+
+		if (! $message_id) {
+			$ret['message'] = 'no message_id';
+			logger('no message_id');
+			return $ret;
+		}
+
+		$sender = $hub['hubloc_hash'];
+
+		/*
+		 * Find the local channel in charge of this post (the first and only recipient of the request packet)
+		 */
+
+		$arr = $data['recipients'][0];
+
+		$c = q("select * from channel left join xchan on channel_hash = xchan_hash where channel_hash = '%s' limit 1",
+			dbesc($arr['portable_id'])
+		);
+		if (! $c) {
+			logger('recipient channel not found.');
+			$ret['message'] .= 'recipient not found.' . EOL;
+			return $ret;
+		}
+
+		/*
+		 * fetch the requested conversation
+		 */
+
+		$messages = zot_feed($c[0]['channel_id'],$sender_hash, [ 'message_id' => $data['message_id'], 'encoding' => 'activitystreams' ]);
+
+		return (($messages) ? : [] );
+
+	}
+
+	static function rekey_request($sender,$data,$hub) {
+
+		$ret = array('success' => false);
+
+		//	newsig is newkey signed with oldkey
+
+		// The original xchan will remain. In Zot/Receiver we will have imported the new xchan and hubloc to verify
+		// the packet authenticity. What we will do now is verify that the keychange operation was signed by the
+		// oldkey, and if so change all the abook, abconfig, group, and permission elements which reference the
+		// old xchan_hash.
+
+		if((! $data['old_key']) && (! $data['new_key']) && (! $data['new_sig']))
+			return $ret;
+
+
+		$old = null;
+
+		if(Libzot::verify($data['old_guid'],$data['old_guid_sig'],$data['old_key'])) {
+			$oldhash = make_xchan_hash($data['old_guid'],$data['old_key']);
+			$old = q("select * from xchan where xchan_hash = '%s' limit 1",
+				dbesc($oldhash)
+			);
+		}
+		else 
+			return $ret;
+
+
+		if(! $old) {
+			return $ret;
+		}
+
+		$xchan = $old[0];
+
+		if(! Libzot::verify($data['new_key'],$data['new_sig'],$xchan['xchan_pubkey'])) {
+			return $ret;
+		}
+
+		$r = q("select * from xchan where xchan_hash = '%s' limit 1",
+			dbesc($sender)
+		);
+
+		$newxchan = $r[0];
+
+		// @todo
+		// if ! $update create a linked identity
+
+
+		xchan_change_key($xchan,$newxchan,$data);
+
+		$ret['success'] = true;
+		return $ret;
+	}
+
+
+	/**
+	 * @brief
+	 *
+	 * @param array $sender
+	 * @param array $recipients
+	 *
+	 * return json_return_and_die()
+	 */
+
+	static function reply_purge($sender, $recipients, $hub) {
+
+		$ret = array('success' => false);
+
+		if ($recipients) {
+			// basically this means "unfriend"
+			foreach ($recipients as $recip) {
+				$r = q("select channel.*,xchan.* from channel
+					left join xchan on channel_hash = xchan_hash
+					where channel_hash = '%s' and channel_guid_sig = '%s' limit 1",
+					dbesc($recip)
+				);
+				if ($r) {
+					$r = q("select abook_id from abook where uid = %d and abook_xchan = '%s' limit 1",
+						intval($r[0]['channel_id']),
+						dbesc($sender)
+					);
+					if ($r) {
+						contact_remove($r[0]['channel_id'],$r[0]['abook_id']);
+					}
+				}
+			}
+			$ret['success'] = true;
+		}
+		else {
+
+			// Unfriend everybody - basically this means the channel has committed suicide
+
+			remove_all_xchan_resources($sender);
+
+			$ret['success'] = true;
+		}
+
+		return $ret;
+	}
+
+
+
+
+
+
+}