- andreas@cvs.openbsd.org 2009/06/27 09:29:06
[packet.h packet.c]
packet_bacup_state() and packet_restore_state() will be used to
temporarily save the current state ren resuming a suspended connection.
ok markus@
diff --git a/packet.c b/packet.c
index 0e9993b..600e015 100644
--- a/packet.c
+++ b/packet.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: packet.c,v 1.165 2009/06/12 20:58:32 andreas Exp $ */
+/* $OpenBSD: packet.c,v 1.166 2009/06/27 09:29:06 andreas Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -194,7 +194,7 @@
TAILQ_HEAD(, packet) outgoing;
};
-static struct session_state *active_state;
+static struct session_state *active_state, *backup_state;
static struct session_state *
alloc_session_state(void)
@@ -1887,3 +1887,50 @@
{
return (void *)active_state->newkeys[mode];
}
+
+/*
+ * Save the state for the real connection, and use a separate state when
+ * resuming a suspended connection.
+ */
+void
+packet_backup_state(void)
+{
+ struct session_state *tmp;
+
+ close(active_state->connection_in);
+ active_state->connection_in = -1;
+ close(active_state->connection_out);
+ active_state->connection_out = -1;
+ if (backup_state)
+ tmp = backup_state;
+ else
+ tmp = alloc_session_state();
+ backup_state = active_state;
+ active_state = tmp;
+}
+
+/*
+ * Swap in the old state when resuming a connecion.
+ */
+void
+packet_restore_state(void)
+{
+ struct session_state *tmp;
+ void *buf;
+ u_int len;
+
+ tmp = backup_state;
+ backup_state = active_state;
+ active_state = tmp;
+ active_state->connection_in = backup_state->connection_in;
+ backup_state->connection_in = -1;
+ active_state->connection_out = backup_state->connection_out;
+ backup_state->connection_out = -1;
+ len = buffer_len(&backup_state->input);
+ if (len > 0) {
+ buf = buffer_ptr(&backup_state->input);
+ buffer_append(&active_state->input, buf, len);
+ buffer_clear(&backup_state->input);
+ add_recv_bytes(len);
+ }
+}