Provide a fallback channel to probe for magic-auth when we have no prior communications with a site.

This will be a system channel if one exists, otherwise any channel will do. We'll try to use the first
valid channel on the site because that was probably created when the site was installed and is the
closest thing to a system channel we've got.

1 files changed, 22 insertions, 15 deletions

diff --git a/mod/magic.php b/mod/magic.php
index 03d09e70d..aead559a7 100644
--- a/mod/magic.php
+++ b/mod/magic.php
@@ -33,21 +33,28 @@ function magic_init(&$a) {
 	
 	if(! $x) {
 
-		// Somebody new? Finger them if they've never been seen here before
-
-		if($addr) {
-			$ret = zot_finger($addr,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)
-				);
-			}
+		/*
+		 * 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)
+			);
 		}
 	}