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https://github.com/clearml/dropbear
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Makefile.in contains updated files required
--HG-- extra : convert_revision : cc8a8c49dc70e632c352853a39801089b08149be
This commit is contained in:
Matt Johnston
176
session.h
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176
session.h
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/*
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* Dropbear - a SSH2 server
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*
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* Copyright (c) 2002,2003 Matt Johnston
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE. */
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#ifndef _SESSION_H_
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#define _SESSION_H_
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#include "includes.h"
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#include "buffer.h"
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#include "signkey.h"
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#include "kex.h"
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#include "auth.h"
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#include "channel.h"
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#include "queue.h"
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#include "runopts.h"
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#include "remotetcpfwd.h"
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extern int sessinitdone; /* Is set to 0 somewhere */
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extern int exitflag;
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void common_session_init(int sock, runopts *opts);
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void common_session_cleanup();
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void checktimeouts();
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void session_identification();
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extern void(*session_remoteclosed)();
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/* Server */
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void svr_session(int sock, runopts *opts, int childpipe,
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struct sockaddr *remoteaddr);
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struct key_context {
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const struct dropbear_cipher *recv_algo_crypt; /* NULL for none */
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const struct dropbear_cipher *trans_algo_crypt; /* NULL for none */
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const struct dropbear_hash *recv_algo_mac; /* NULL for none */
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const struct dropbear_hash *trans_algo_mac; /* NULL for none */
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char algo_kex;
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char algo_hostkey;
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char recv_algo_comp; /* compression */
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char trans_algo_comp;
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#ifndef DISABLE_ZLIB
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z_streamp recv_zstream;
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z_streamp trans_zstream;
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#endif
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/* actual keys */
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symmetric_CBC recv_symmetric_struct;
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symmetric_CBC trans_symmetric_struct;
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unsigned char recvmackey[MAX_MAC_KEY];
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unsigned char transmackey[MAX_MAC_KEY];
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};
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struct sshsession {
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/* Is it a client or server? */
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unsigned char isserver;
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runopts * opts; /* runtime options, incl hostkey, banner etc */
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long connecttimeout; /* time to disconnect if we have a timeout (for
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userauth etc), or 0 for no timeout */
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int sock;
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struct sockaddr *remoteaddr;
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unsigned char *remotehost; /* the peer hostname */
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unsigned char *remoteident;
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int maxfd; /* the maximum file descriptor to check with select() */
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/* Packet buffers/values etc */
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buffer *writepayload; /* Unencrypted payload to write - this is used
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throughout the code, as handlers fill out this
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buffer with the packet to send. */
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struct Queue writequeue; /* A queue of encrypted packets to send */
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buffer *readbuf; /* Encrypted */
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buffer *decryptreadbuf; /* Post-decryption */
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buffer *payload; /* Post-decompression, the actual SSH packet */
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unsigned int transseq, recvseq; /* Sequence IDs */
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/* Packet-handling flags */
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unsigned dataallowed : 1; /* whether we can send data packets or we are in
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the middle of a KEX or something */
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unsigned char expecting; /* byte indicating what packet we expect next,
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or 0x00 for any */
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unsigned char ignorenext; /* whether to ignore the next packet,
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used for kex_follows stuff */
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/* KEX/encryption related */
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struct KEXState kexstate;
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struct key_context *keys;
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struct key_context *newkeys;
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unsigned char *session_id; /* this is the hash from the first kex */
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/* The below are used temorarily during kex, are freed after use */
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mp_int * dh_K; /* SSH_MSG_KEXDH_REPLY and sending SSH_MSH_NEWKEYS */
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unsigned char hash[SHA1_HASH_SIZE]; /* the hash*/
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buffer* kexhashbuf; /* session hash buffer calculated from various packets*/
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buffer* transkexinit; /* the kexinit packet we send should be kept so we
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can add it to the hash when generating keys */
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/* Channel related */
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struct Channel ** channels; /* these pointers may be null */
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unsigned int chansize; /* the number of Channel*s allocated for channels */
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struct ChanType **chantypes; /* The valid channel types */
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/* TCP forwarding - where manage listeners */
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#ifndef DISABLE_REMOTETCPFWD
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struct TCPListener ** tcplisteners;
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unsigned int tcplistensize;
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#endif
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};
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struct serversession {
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/* Server specific options */
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int childpipe; /* kept open until we successfully authenticate */
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/* userauth */
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struct AuthState authstate;
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struct ChildPid * childpids; /* array of mappings childpid<->channel */
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unsigned int childpidsize;
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};
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struct clientsession {
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int something; /* XXX */
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};
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/* Global structs storing the state */
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extern struct sshsession ses;
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#ifdef DROPBEAR_SERVER
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extern struct serversession svr_ses;
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#endif /* DROPBEAR_SERVER */
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#ifdef DROPBEAR_CLIENT
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extern struct serversession cli_ses;
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#endif /* DROPBEAR_CLIENT */
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#endif /* _SESSION_H_ */
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