From 22681875f32fa97f65c9a52e2ee666932706ce95 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Tue, 5 May 2020 18:39:28 +0300
Subject: Update mautrix-go and give crypto module access to state store

---
 matrix/matrix.go          | 18 +++++++++++++++---
 matrix/rooms/roomcache.go | 21 +++++++++++++++++++++
 2 files changed, 36 insertions(+), 3 deletions(-)

(limited to 'matrix')

diff --git a/matrix/matrix.go b/matrix/matrix.go
index 27ed053..fe1aaa5 100644
--- a/matrix/matrix.go
+++ b/matrix/matrix.go
@@ -139,7 +139,7 @@ func (c *Container) InitClient() error {
 	if err != nil {
 		return err
 	}
-	c.crypto = crypto.NewOlmMachine(c.client, cryptoLogger{}, cryptoStore)
+	c.crypto = crypto.NewOlmMachine(c.client, cryptoLogger{}, cryptoStore, c.config.Rooms)
 	err = c.crypto.Load()
 	if err != nil {
 		return err
@@ -301,7 +301,7 @@ func (c *Container) Stop() {
 		}
 		c.history = nil
 		debug.Print("Flushing crypto store")
-		err = c.crypto.Store.Flush()
+		err = c.crypto.CryptoStore.Flush()
 		if err != nil {
 			debug.Print("Error flushing crypto store:", err)
 		}
@@ -356,6 +356,9 @@ func (c *Container) OnLogin() {
 	debug.Print("Initializing syncer")
 	c.syncer = NewGomuksSyncer(c.config.Rooms)
 	c.syncer.OnSync(c.crypto.ProcessSyncResponse)
+	c.syncer.OnEventType(event.StateMember, func(source EventSource, evt *event.Event) {
+		c.crypto.HandleMemberEvent(evt)
+	})
 	c.syncer.OnEventType(event.EventMessage, c.HandleMessage)
 	c.syncer.OnEventType(event.EventEncrypted, c.HandleEncrypted)
 	c.syncer.OnEventType(event.EventSticker, c.HandleMessage)
@@ -993,11 +996,20 @@ func (c *Container) GetHistory(room *rooms.Room, limit int) ([]*muksevt.Event, e
 		return nil, err
 	}
 	debug.Printf("Loaded %d events for %s from server from %s to %s", len(resp.Chunk), room.ID, resp.Start, resp.End)
-	for _, evt := range resp.Chunk {
+	for i, evt := range resp.Chunk {
 		err := evt.Content.ParseRaw(evt.Type)
 		if err != nil {
 			debug.Printf("Failed to unmarshal content of event %s (type %s) by %s in %s: %v\n%s", evt.ID, evt.Type.Repr(), evt.Sender, evt.RoomID, err, string(evt.Content.VeryRaw))
 		}
+
+		if evt.Type == event.EventEncrypted {
+			decrypted, err := c.crypto.DecryptMegolmEvent(evt)
+			if err != nil {
+				debug.Print("Failed to decrypt event:", err)
+			} else {
+				resp.Chunk[i] = decrypted
+			}
+		}
 	}
 	for _, evt := range resp.State {
 		room.UpdateState(evt)
diff --git a/matrix/rooms/roomcache.go b/matrix/rooms/roomcache.go
index ffdcad1..d66078c 100644
--- a/matrix/rooms/roomcache.go
+++ b/matrix/rooms/roomcache.go
@@ -27,6 +27,7 @@ import (
 	sync "github.com/sasha-s/go-deadlock"
 
 	"maunium.net/go/gomuks/debug"
+	"maunium.net/go/mautrix/event"
 	"maunium.net/go/mautrix/id"
 )
 
@@ -67,6 +68,26 @@ func (cache *RoomCache) EnableUnloading() {
 	cache.noUnload = false
 }
 
+func (cache *RoomCache) IsEncrypted(roomID id.RoomID) bool {
+	room := cache.Get(roomID)
+	return room != nil && room.Encrypted
+}
+
+func (cache *RoomCache) FindSharedRooms(userID id.UserID) (shared []id.RoomID) {
+	cache.Lock()
+	for _, room := range cache.Map {
+		if !room.Encrypted {
+			continue
+		}
+		member, ok := room.GetMembers()[userID]
+		if ok && member.Membership == event.MembershipJoin {
+			shared = append(shared, room.ID)
+		}
+	}
+	cache.Unlock()
+	return
+}
+
 func (cache *RoomCache) LoadList() error {
 	cache.Lock()
 	defer cache.Unlock()
-- 
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