struct monitor *
monitor_init(void)
{
struct monitor *mon;
int pair[2];
mon = xmalloc(sizeof(*mon));
mon->m_pid = 0;
monitor_socketpair(pair);
mon->m_recvfd = pair[0];
mon->m_sendfd = pair[1];
/* Used to share zlib space across processes */
if (options.compression) {
mon->m_zback = mm_create(NULL, MM_MEMSIZE);
mon->m_zlib = mm_create(mon->m_zback, 20 * MM_MEMSIZE);
/* Compression needs to share state across borders */
mm_init_compression(mon->m_zlib);
}
return mon;
}
void
monitor_apply_keystate(struct monitor *pmonitor)
{
if (compat20) {
set_newkeys(MODE_IN);
set_newkeys(MODE_OUT);
} else {
packet_set_protocol_flags(child_state.ssh1protoflags);
packet_set_encryption_key(child_state.ssh1key,
child_state.ssh1keylen, child_state.ssh1cipher);
xfree(child_state.ssh1key);
}
/* for rc4 and other stateful ciphers */
packet_set_keycontext(MODE_OUT, child_state.keyout);
xfree(child_state.keyout);
packet_set_keycontext(MODE_IN, child_state.keyin);
xfree(child_state.keyin);
if (!compat20) {
packet_set_iv(MODE_OUT, child_state.ivout);
xfree(child_state.ivout);
packet_set_iv(MODE_IN, child_state.ivin);
xfree(child_state.ivin);
}
memcpy(&incoming_stream, &child_state.incoming,
sizeof(incoming_stream));
memcpy(&outgoing_stream, &child_state.outgoing,
sizeof(outgoing_stream));
/* Update with new address */
if (options.compression)
mm_init_compression(pmonitor->m_zlib);
/* Network I/O buffers */
/* XXX inefficient for large buffers, need: buffer_init_from_string */
buffer_clear(packet_get_input());
buffer_append(packet_get_input(), child_state.input, child_state.ilen);
memset(child_state.input, 0, child_state.ilen);
xfree(child_state.input);
buffer_clear(packet_get_output());
buffer_append(packet_get_output(), child_state.output,
child_state.olen);
memset(child_state.output, 0, child_state.olen);
xfree(child_state.output);
/* Roaming */
if (compat20)
roam_set_bytes(child_state.sent_bytes, child_state.recv_bytes);
}
