module updates

Zotlabs/Module/Magic.php

@@ -0,0 +1,173 @@
+<?php
+namespace Zotlabs\Module;
+
+@require_once('include/zot.php');
+
+
+class Magic extends \Zotlabs\Web\Controller {
+
+	function init() {
+	
+		$ret = array('success' => false, 'url' => '', 'message' => '');
+		logger('mod_magic: invoked', LOGGER_DEBUG);
+	
+		logger('mod_magic: args: ' . print_r($_REQUEST,true),LOGGER_DATA);
+	
+		$addr = ((x($_REQUEST,'addr')) ? $_REQUEST['addr'] : '');
+		$dest = ((x($_REQUEST,'dest')) ? $_REQUEST['dest'] : '');
+		$test = ((x($_REQUEST,'test')) ? intval($_REQUEST['test']) : 0);
+		$rev  = ((x($_REQUEST,'rev'))  ? intval($_REQUEST['rev'])  : 0);
+		$delegate = ((x($_REQUEST,'delegate')) ? $_REQUEST['delegate']  : '');
+	
+		$parsed = parse_url($dest);
+		if(! $parsed) {
+			if($test) {
+				$ret['message'] .= 'could not parse ' . $dest . EOL;
+				return($ret);
+			}
+			goaway($dest);
+		}
+	
+		$basepath = $parsed['scheme'] . '://' . $parsed['host'] . (($parsed['port']) ? ':' . $parsed['port'] : ''); 
+	
+		$x = q("select * from hubloc where hubloc_url = '%s' order by hubloc_connected desc limit 1",
+			dbesc($basepath)
+		);
+		
+		if(! $x) {
+	
+			/*
+			 * We have no records for, or prior communications with this hub. 
+			 * If an address was supplied, let's finger them to create a hub record. 
+			 * Otherwise we'll use the special address '[system]' which will return
+			 * either a system channel or the first available normal channel. We don't
+			 * really care about what channel is returned - we need the hub information 
+			 * from that response so that we can create signed auth packets destined 
+			 * for that hub.
+			 *
+			 */
+	
+			$ret = zot_finger((($addr) ? $addr : '[system]@' . $parsed['host']),null);
+			if($ret['success']) {
+				$j = json_decode($ret['body'],true);
+				if($j)
+					import_xchan($j);
+	
+				// Now try again
+	
+				$x = q("select * from hubloc where hubloc_url = '%s' order by hubloc_connected desc limit 1",
+					dbesc($basepath)
+				);
+			}
+		}
+	
+		if(! $x) {
+			if($rev)
+				goaway($dest);
+			else {
+				logger('mod_magic: no channels found for requested hub.' . print_r($_REQUEST,true));
+				if($test) {
+					$ret['message'] .= 'This site has no previous connections with ' . $basepath . EOL;
+					return $ret;
+				} 
+				notice( t('Hub not found.') . EOL);
+				return;
+			}
+		}
+	
+		// This is ready-made for a plugin that provides a blacklist or "ask me" before blindly authenticating. 
+		// By default, we'll proceed without asking.
+	
+		$arr = array(
+			'channel_id' => local_channel(),
+			'xchan' => $x[0],
+			'destination' => $dest, 
+			'proceed' => true
+		);
+	
+		call_hooks('magic_auth',$arr);
+		$dest = $arr['destination'];
+		if(! $arr['proceed']) {
+			if($test) {
+				$ret['message'] .= 'cancelled by plugin.' . EOL;
+				return $ret;
+			}
+			goaway($dest);
+		}
+	
+		if((get_observer_hash()) && ($x[0]['hubloc_url'] === z_root())) {
+			// We are already authenticated on this site and a registered observer.
+			// Just redirect.
+			if($test) {
+				$ret['success'] = true;
+				$ret['message'] .= 'Local site - you are already authenticated.' . EOL;
+				return $ret;
+			}
+	
+			$delegation_success = false;
+			if($delegate) {
+				$r = q("select * from channel left join hubloc on channel_hash = hubloc_hash where hubloc_addr = '%s' limit 1",
+					dbesc($delegate)
+				);
+	
+				if($r && intval($r[0]['channel_id'])) {
+					$allowed = perm_is_allowed($r[0]['channel_id'],get_observer_hash(),'delegate');
+					if($allowed) {
+						$_SESSION['delegate_channel'] = $r[0]['channel_id'];
+						$_SESSION['delegate'] = get_observer_hash();
+						$_SESSION['account_id'] = intval($r[0]['channel_account_id']);
+						change_channel($r[0]['channel_id']);
+	
+						$delegation_success = true;
+					}
+				}
+			}
+				
+	
+	
+			// FIXME: check and honour local delegation
+	
+	
+			goaway($dest);
+		}
+	
+		if(local_channel()) {
+			$channel = \App::get_channel();
+	
+			$token = random_string();
+			$token_sig = base64url_encode(rsa_sign($token,$channel['channel_prvkey']));
+	 
+			$channel['token'] = $token;
+			$channel['token_sig'] = $token_sig;
+	
+			\Zotlabs\Zot\Verify::create('auth',$channel['channel_id'],$token,$x[0]['hubloc_url']);
+	
+			$target_url = $x[0]['hubloc_callback'] . '/?f=&auth=' . urlencode($channel['channel_address'] . '@' . \App::get_hostname())
+				. '&sec=' . $token . '&dest=' . urlencode($dest) . '&version=' . ZOT_REVISION;
+	
+			if($delegate)
+				$target_url .= '&delegate=' . urlencode($delegate);
+	
+			logger('mod_magic: redirecting to: ' . $target_url, LOGGER_DEBUG); 
+	
+			if($test) {
+				$ret['success'] = true;
+				$ret['url'] = $target_url;
+				$ret['message'] = 'token ' . $token . ' created for channel ' . $channel['channel_id'] . ' for url ' . $x[0]['hubloc_url'] . EOL;
+				return $ret;
+			}
+	
+			goaway($target_url);
+				
+		}
+	
+		if($test) {
+			$ret['message'] = 'Not authenticated or invalid arguments to mod_magic' . EOL;
+			return $ret;
+		}
+	
+		goaway($dest);
+	
+	}
+	
+}