From 89c561c9cf381a1068e4d78dd9ff1f42f709c4ce Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Thu, 16 Sep 2010 14:43:27 -0700
Subject: [PATCH] Ticket #2731: Fix for regression in posting to remote groups
 (regression in 2d4e0693c88bb8cad47f917db3ac5ecfacf28619)

Changes in 2d4e0693c88bb8cad47f917db3ac5ecfacf28619 changed Ostatus_profile::filterReplies() (which sorts out the local, remote, and group recipients on incoming remote messages) from checking for remote profiles with a safe call to Ostatus_profile::staticGet() to calls through Ostatus_profile::ensureProfileURL() and Ostatus_profile::ensureWebfinger(), which throw exceptions and thus abort processing.
Since this was done before checking for local groups, the filter would fail when the ensure* functions determined it was looking at a local group and rightfully refused to create a remote group profile for it.

Changing the calls to the ensure* functions was done so we can record remote reply recipients for future reply-to-reply processing (the staticGet() call was a cheaper way to do a lookup when we knew we only actually had to process groups that somebody signed up to); most important fix is simply to actually check for the exception! :)

Here I'm changing the order of processing so we do the local group lookup first -- where it's nice and safe -- and then when we do the remote checks, we'll go ahead and gracefully skip that entry if the full remote lookup fails, so we'll still process any following recipients.
---
 plugins/OStatus/classes/Ostatus_profile.php | 33 ++++++++++-----------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/plugins/OStatus/classes/Ostatus_profile.php b/plugins/OStatus/classes/Ostatus_profile.php
index 19fe5169b4..11ca67b25c 100644
--- a/plugins/OStatus/classes/Ostatus_profile.php
+++ b/plugins/OStatus/classes/Ostatus_profile.php
@@ -703,23 +703,7 @@ class Ostatus_profile extends Memcached_DataObject
                 continue;
             }
 
-            // Is the recipient a remote group?
-            $oprofile = Ostatus_profile::ensureProfileURI($recipient);
-
-            if ($oprofile) {
-                if ($oprofile->isGroup()) {
-                    // Deliver to local members of this remote group.
-                    // @fixme sender verification?
-                    $groups[] = $oprofile->group_id;
-                } else {
-                    // may be canonicalized or something
-                    $replies[] = $oprofile->uri;
-                }
-                continue;
-            }
-
             // Is the recipient a local group?
-            // @fixme uri on user_group isn't reliable yet
             // $group = User_group::staticGet('uri', $recipient);
             $id = OStatusPlugin::localGroupFromUrl($recipient);
             if ($id) {
@@ -738,7 +722,22 @@ class Ostatus_profile extends Memcached_DataObject
                 }
             }
 
-            common_log(LOG_DEBUG, "Skipping reply to unrecognized profile $recipient");
+            // Is the recipient a remote user or group?
+            try {
+                $oprofile = Ostatus_profile::ensureProfileURI($recipient);
+                if ($oprofile->isGroup()) {
+                    // Deliver to local members of this remote group.
+                    // @fixme sender verification?
+                    $groups[] = $oprofile->group_id;
+                } else {
+                    // may be canonicalized or something
+                    $replies[] = $oprofile->uri;
+                }
+                continue;
+            } catch (Exception $e) {
+                // Neither a recognizable local nor remote user!
+                common_log(LOG_DEBUG, "Skipping reply to unrecognized profile $recipient: " . $e->getMessage());
+            }
 
         }
         $attention_uris = $replies;