diff options
Diffstat (limited to 'svr-packet.c')
| -rw-r--r-- | svr-packet.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/svr-packet.c b/svr-packet.c deleted file mode 100644 index 064f465..0000000 --- a/svr-packet.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * Dropbear - a SSH2 server - * - * Copyright (c) 2002,2003 Matt Johnston - * All rights reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. */ - -#include "includes.h" -#include "packet.h" -#include "session.h" -#include "dbutil.h" -#include "ssh.h" -#include "algo.h" -#include "buffer.h" -#include "kex.h" -#include "random.h" -#include "service.h" -#include "auth.h" -#include "channel.h" - -static void svr_process_postauth_packet(unsigned int type); - -/* process a decrypted packet, call the appropriate handler */ -void svr_process_packet() { - - unsigned char type; - - TRACE(("enter process_packet")); - - type = buf_getbyte(ses.payload); - TRACE(("process_packet: packet type = %d", type)); - - /* these packets we can receive at any time, regardless of expecting - * other packets: */ - switch(type) { - - case SSH_MSG_IGNORE: - case SSH_MSG_DEBUG: - TRACE(("received SSH_MSG_IGNORE or SSH_MSG_DEBUG")); - goto out; - - case SSH_MSG_UNIMPLEMENTED: - /* debugging XXX */ - TRACE(("SSH_MSG_UNIMPLEMENTED")); - dropbear_exit("received SSH_MSG_UNIMPLEMENTED"); - - case SSH_MSG_DISCONNECT: - /* TODO cleanup? */ - dropbear_close("Disconnect received"); - } - - /* Check if we should ignore this packet. Used currently only for - * KEX code, with first_kex_packet_follows */ - if (ses.ignorenext) { - TRACE(("Ignoring packet, type = %d", type)); - ses.ignorenext = 0; - goto out; - } - - /* check that we aren't expecting a particular packet */ - if (ses.expecting && ses.expecting != type) { - /* TODO send disconnect? */ - dropbear_exit("unexpected packet type %d, expected %d", type, - ses.expecting); - } - - /* handle the packet depending on type */ - ses.expecting = 0; - - switch (type) { - - case SSH_MSG_SERVICE_REQUEST: - recv_msg_service_request(); - break; - - case SSH_MSG_USERAUTH_REQUEST: - recv_msg_userauth_request(); - break; - - case SSH_MSG_KEXINIT: - recv_msg_kexinit(); - break; - - case SSH_MSG_KEXDH_INIT: - recv_msg_kexdh_init(); - break; - - case SSH_MSG_NEWKEYS: - recv_msg_newkeys(); - break; - - /* this is ugly, need to make a cleaner way to do it */ - case SSH_MSG_CHANNEL_DATA: - case SSH_MSG_CHANNEL_WINDOW_ADJUST: - case SSH_MSG_CHANNEL_REQUEST: - case SSH_MSG_CHANNEL_OPEN: - case SSH_MSG_CHANNEL_EOF: - case SSH_MSG_CHANNEL_CLOSE: - case SSH_MSG_CHANNEL_OPEN_CONFIRMATION: - case SSH_MSG_CHANNEL_OPEN_FAILURE: - case SSH_MSG_GLOBAL_REQUEST: - /* these should be checked for authdone below */ - svr_process_postauth_packet(type); - break; - - default: - /* TODO this possibly should be handled */ - TRACE(("preauth unknown packet")); - recv_unimplemented(); - break; - } - -out: - buf_free(ses.payload); - ses.payload = NULL; - - TRACE(("leave process_packet")); -} - -/* process a packet, and also check that auth has been done */ -static void svr_process_postauth_packet(unsigned int type) { - - /* messages following here require userauth before use */ - - /* IF YOU ADD MORE PACKET TYPES, MAKE SURE THEY'RE ALSO ADDED TO THE LIST - * IN process_packet() XXX XXX XXX */ - if (!svr_ses.authstate.authdone) { - dropbear_exit("received message %d before userauth", type); - } - - switch (type) { - - case SSH_MSG_CHANNEL_DATA: - recv_msg_channel_data(); - break; - - case SSH_MSG_CHANNEL_WINDOW_ADJUST: - recv_msg_channel_window_adjust(); - break; - -#ifndef DISABLE_REMOTETCPFWD - case SSH_MSG_GLOBAL_REQUEST: - /* currently only used for remote tcp, so we cheat a little */ - recv_msg_global_request_remotetcp(); - break; -#endif - - case SSH_MSG_CHANNEL_REQUEST: - recv_msg_channel_request(); - break; - - case SSH_MSG_CHANNEL_OPEN: - recv_msg_channel_open(); - break; - - case SSH_MSG_CHANNEL_EOF: - recv_msg_channel_eof(); - break; - - case SSH_MSG_CHANNEL_CLOSE: - recv_msg_channel_close(); - break; - -#ifdef USING_LISTENERS /* for x11, tcp fwd etc */ - case SSH_MSG_CHANNEL_OPEN_CONFIRMATION: - recv_msg_channel_open_confirmation(); - break; - - case SSH_MSG_CHANNEL_OPEN_FAILURE: - recv_msg_channel_open_failure(); - break; -#endif - - default: - TRACE(("unknown packet()")); - recv_unimplemented(); - break; - } -} |