From 69a193dae543641a2db6823fa6493c02f56fafbd Mon Sep 17 00:00:00 2001
From: tobi <31960611+tsmethurst@users.noreply.github.com>
Date: Fri, 23 Sep 2022 21:27:35 +0200
Subject: [feature] Allow delivery to sharedInboxes where possible (#847)

* update Activity

* add instance-deliver-to-shared-inboxes setting

* update activity version again

* add SharedInboxURI field to accounts

* serdes for endpoints/sharedInbox

* deliver to sharedInbox if one is available

* update tests

* only assign shared inbox if shared domain

* look for shared inbox if currently nil

* go fmt

* finger to get params.RemoteAccountID if necessary

* make comments clearer

* compare dns more consistently
---
 internal/typeutils/astointernal.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'internal/typeutils/astointernal.go')

diff --git a/internal/typeutils/astointernal.go b/internal/typeutils/astointernal.go
index 7ec45335d..b69bb247e 100644
--- a/internal/typeutils/astointernal.go
+++ b/internal/typeutils/astointernal.go
@@ -23,6 +23,7 @@ import (
 	"errors"
 	"fmt"
 
+	"github.com/miekg/dns"
 	"github.com/superseriousbusiness/gotosocial/internal/ap"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
@@ -156,6 +157,19 @@ func (c *converter) ASRepresentationToAccount(ctx context.Context, accountable a
 		acct.InboxURI = accountable.GetActivityStreamsInbox().GetIRI().String()
 	}
 
+	// SharedInboxURI
+	if sharedInboxURI := ap.ExtractSharedInbox(accountable); sharedInboxURI != nil {
+		var sharedInbox string
+
+		// only trust shared inbox if it has at least two domains,
+		// from the right, in common with the domain of the account
+		if dns.CompareDomainName(acct.Domain, sharedInboxURI.Host) >= 2 {
+			sharedInbox = sharedInboxURI.String()
+		}
+
+		acct.SharedInboxURI = &sharedInbox
+	}
+
 	// OutboxURI
 	if accountable.GetActivityStreamsOutbox() != nil && accountable.GetActivityStreamsOutbox().GetIRI() != nil {
 		acct.OutboxURI = accountable.GetActivityStreamsOutbox().GetIRI().String()
-- 
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