diff options
Diffstat (limited to 'packet.c')
| -rw-r--r-- | packet.c | 51 |
1 files changed, 49 insertions, 2 deletions
@@ -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 @@ struct session_state { 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 @@ packet_get_newkeys(int mode) { 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); + } +} |