chunyu/sing-box
1
0
Fork 0
mirror of https://github.com/SagerNet/sing-box.git synced 2025-06-07 19:24:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

Fix leak in hijack-dns

Browse Source
This commit is contained in:
世界 2025-06-06 14:28:09 +08:00
parent 255068fd40
commit 43a9016c83
No known key found for this signature in database
GPG Key ID: CD109927C34A63C4
2 changed files with 13 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
route/dns.go
View File

@ -31,7 +31,7 @@ func (r *Router) hijackDNSStream(ctx context.Context, conn net.Conn, metadata ad
}
}
func (r *Router) hijackDNSPacket(ctx context.Context, conn N.PacketConn, packetBuffers []*N.PacketBuffer, metadata adapter.InboundContext) {
func (r *Router) hijackDNSPacket(ctx context.Context, conn N.PacketConn, packetBuffers []*N.PacketBuffer, metadata adapter.InboundContext, onClose N.CloseHandlerFunc) {
if natConn, isNatConn := conn.(udpnat.Conn); isNatConn {
metadata.Destination = M.Socksaddr{}
for _, packet := range packetBuffers {
@ -45,10 +45,12 @@ func (r *Router) hijackDNSPacket(ctx context.Context, conn N.PacketConn, packetB
conn: conn,
ctx: ctx,
metadata: metadata,
onClose: onClose,
})
return
}
err := dnsOutbound.NewDNSPacketConnection(ctx, r, conn, packetBuffers, metadata)
N.CloseOnHandshakeFailure(conn, onClose, err)
if err != nil && !E.IsClosedOrCanceled(err) {
r.dnsLogger.ErrorContext(ctx, E.Cause(err, "process packet connection"))
}
@ -85,8 +87,16 @@ type dnsHijacker struct {
conn N.PacketConn
ctx context.Context
metadata adapter.InboundContext
onClose N.CloseHandlerFunc
}
func (h *dnsHijacker) NewPacketEx(buffer *buf.Buffer, destination M.Socksaddr) {
go ExchangeDNSPacket(h.ctx, h.router, h.conn, buffer, h.metadata, destination)
}
func (h *dnsHijacker) Close() error {
if h.onClose != nil {
h.onClose(nil)
}
return nil
}

4
route/route.go
View File

@ -120,7 +120,7 @@ func (r *Router) routeConnection(ctx context.Context, conn net.Conn, metadata ad
for _, buffer := range buffers {
conn = bufio.NewCachedConn(conn, buffer)
}
r.hijackDNSStream(ctx, conn, metadata)
N.CloseOnHandshakeFailure(conn, onClose, r.hijackDNSStream(ctx, conn, metadata))
return nil
}
}
@ -233,7 +233,7 @@ func (r *Router) routePacketConnection(ctx context.Context, conn N.PacketConn, m
N.CloseOnHandshakeFailure(conn, onClose, action.Error(ctx))
return nil
case *rule.RuleActionHijackDNS:
r.hijackDNSPacket(ctx, conn, packetBuffers, metadata)
r.hijackDNSPacket(ctx, conn, packetBuffers, metadata, onClose)
return nil
}
}