[feature] Read + Write tombstones for deleted Actors (#1005)

* [feature] Read + Write tombstones for deleted Actors

* copyTombstone

* update to use resultcache instead of old ttl cache

Signed-off-by: kim <grufwub@gmail.com>

* update go-cache library to fix result cache capacity / ordering bugs

Signed-off-by: kim <grufwub@gmail.com>

* bump go-cache/v3 to v3.1.6 to fix bugs

Signed-off-by: kim <grufwub@gmail.com>

* switch on status code

* better explain ErrGone reasoning

Signed-off-by: kim <grufwub@gmail.com>
Co-authored-by: kim <grufwub@gmail.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/testrig/testmodels.go b/testrig/testmodels.go
index fa2eabf04..9f987eeae 100644
--- a/testrig/testmodels.go
+++ b/testrig/testmodels.go
@@ -583,6 +583,18 @@ func NewTestAccounts() map[string]*gtsmodel.Account {
 	return accounts
 }
 
+func NewTestTombstones() map[string]*gtsmodel.Tombstone {
+	return map[string]*gtsmodel.Tombstone{
+		"https://somewhere.mysterious/users/rest_in_piss#main-key": {
+			ID:        "01GHBTVE9HQPPBDH2W5VH2DGN4",
+			CreatedAt: TimeMustParse("2021-11-09T19:33:45Z"),
+			UpdatedAt: TimeMustParse("2021-11-09T19:33:45Z"),
+			Domain:    "somewhere.mysterious",
+			URI:       "https://somewhere.mysterious/users/rest_in_piss#main-key",
+		},
+	}
+}
+
 // NewTestAttachments returns a map of attachments keyed according to which account
 // and status they belong to, and which attachment number of that status they are.
 func NewTestAttachments() map[string]*gtsmodel.MediaAttachment {
@@ -1835,6 +1847,16 @@ func NewTestActivities(accounts map[string]*gtsmodel.Account) map[string]Activit
 	)
 	announceForwarded2ZorkSig, announceForwarded2ZorkDigest, announceForwarded2ZorkDate := GetSignatureForActivity(announceForwarded2Zork, accounts["remote_account_1"].PublicKeyURI, accounts["remote_account_1"].PrivateKey, URLMustParse(accounts["local_account_1"].InboxURI))
 
+	deleteForRemoteAccount3 := newAPDelete(
+		URLMustParse("https://somewhere.mysterious/users/rest_in_piss"),
+		URLMustParse("https://somewhere.mysterious/users/rest_in_piss"),
+		TimeMustParse("2022-07-13T12:13:12+02:00"),
+		URLMustParse(accounts["local_account_1"].URI),
+	)
+	// it doesn't really matter what key we use to sign this, since we're not going to be able to verify if anyway
+	keyToSignDelete := accounts["remote_account_1"].PrivateKey
+	deleteForRemoteAccount3Sig, deleteForRemoteAccount3Digest, deleteForRemoteAccount3Date := GetSignatureForActivity(deleteForRemoteAccount3, "https://somewhere.mysterious/users/rest_in_piss#main-key", keyToSignDelete, URLMustParse(accounts["local_account_1"].InboxURI))
+
 	return map[string]ActivityWithSignature{
 		"dm_for_zork": {
 			Activity:        createDmForZork,
@@ -1878,6 +1900,12 @@ func NewTestActivities(accounts map[string]*gtsmodel.Account) map[string]Activit
 			DigestHeader:    announceForwarded2ZorkDigest,
 			DateHeader:      announceForwarded2ZorkDate,
 		},
+		"delete_https://somewhere.mysterious/users/rest_in_piss#main-key": {
+			Activity:        deleteForRemoteAccount3,
+			SignatureHeader: deleteForRemoteAccount3Sig,
+			DigestHeader:    deleteForRemoteAccount3Digest,
+			DateHeader:      deleteForRemoteAccount3Date,
+		},
 	}
 }
 
@@ -3151,3 +3179,25 @@ func newAPAnnounce(announceID *url.URL, announceActor *url.URL, announcePublishe
 
 	return announce
 }
+
+func newAPDelete(deleteTarget *url.URL, deleteActor *url.URL, deletePublished time.Time, deleteTo *url.URL) vocab.ActivityStreamsDelete {
+	delete := streams.NewActivityStreamsDelete()
+
+	objectProp := streams.NewActivityStreamsObjectProperty()
+	objectProp.AppendIRI(deleteTarget)
+	delete.SetActivityStreamsObject(objectProp)
+
+	to := streams.NewActivityStreamsToProperty()
+	to.AppendIRI(deleteTo)
+	delete.SetActivityStreamsTo(to)
+
+	actor := streams.NewActivityStreamsActorProperty()
+	actor.AppendIRI(deleteActor)
+	delete.SetActivityStreamsActor(actor)
+
+	published := streams.NewActivityStreamsPublishedProperty()
+	published.Set(deletePublished)
+	delete.SetActivityStreamsPublished(published)
+
+	return delete
+}