Mercurial > dropbear
view kex.h @ 1499:2d450c1056e3
options: Complete the transition to numeric toggles (`#if')
For the sake of review, this commit alters only the code; the affiliated
comments within the source files also need to be updated, but doing so
now would obscure the operational changes that have been made here.
* All on/off options have been switched to the numeric `#if' variant;
that is the only way to make this `default_options.h.in' thing work
in a reasonable manner.
* There is now some very minor compile-time checking of the user's
choice of options.
* NO_FAST_EXPTMOD doesn't seem to be used, so it has been removed.
* ENABLE_USER_ALGO_LIST was supposed to be renamed DROPBEAR_USER_ALGO_LIST,
and this commit completes that work.
* DROPBEAR_FUZZ seems to be a relatively new, as-yet undocumented option,
which was added by the following commit:
commit 6e0b539e9ca0b5628c6c5a3d118ad6a2e79e8039
Author: Matt Johnston <[email protected]>
Date: Tue May 23 22:29:21 2017 +0800
split out checkpubkey_line() separately
It has now been added to `sysoptions.h' and defined as `0' by default.
* The configuration option `DROPBEAR_PASSWORD_ENV' is no longer listed in
`default_options.h.in'; it is no longer meant to be set by the user, and
is instead left to be defined in `sysoptions.h' (where it was already being
defined) as merely the name of the environment variable in question:
DROPBEAR_PASSWORD
To enable or disable use of that environment variable, the user must now
toggle `DROPBEAR_USE_DROPBEAR_PASSWORD'.
* The sFTP support is now toggled by setting `DROPBEAR_SFTPSERVER', and the
path of the sFTP server program is set independently through the usual
SFTPSERVER_PATH.
author | Michael Witten <mfwitten@gmail.com> |
---|---|
date | Thu, 20 Jul 2017 19:38:26 +0000 |
parents | 06d52bcb8094 |
children | 5916af64acd4 |
line wrap: on
line source
/* * 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. */ #ifndef DROPBEAR_KEX_H_ #define DROPBEAR_KEX_H_ #include "includes.h" #include "algo.h" #include "signkey.h" void send_msg_kexinit(void); void recv_msg_kexinit(void); void send_msg_newkeys(void); void recv_msg_newkeys(void); void kexfirstinitialise(void); struct kex_dh_param *gen_kexdh_param(void); void free_kexdh_param(struct kex_dh_param *param); void kexdh_comb_key(struct kex_dh_param *param, mp_int *dh_pub_them, sign_key *hostkey); #if DROPBEAR_ECDH struct kex_ecdh_param *gen_kexecdh_param(void); void free_kexecdh_param(struct kex_ecdh_param *param); void kexecdh_comb_key(struct kex_ecdh_param *param, buffer *pub_them, sign_key *hostkey); #endif #if DROPBEAR_CURVE25519 struct kex_curve25519_param *gen_kexcurve25519_param(void); void free_kexcurve25519_param(struct kex_curve25519_param *param); void kexcurve25519_comb_key(const struct kex_curve25519_param *param, const buffer *pub_them, sign_key *hostkey); #endif #ifndef DISABLE_ZLIB int is_compress_trans(void); int is_compress_recv(void); #endif void recv_msg_kexdh_init(void); /* server */ void send_msg_kexdh_init(void); /* client */ void recv_msg_kexdh_reply(void); /* client */ struct KEXState { unsigned sentkexinit : 1; /*set when we've sent/recv kexinit packet */ unsigned recvkexinit : 1; unsigned them_firstfollows : 1; /* true when first_kex_packet_follows is set */ unsigned sentnewkeys : 1; /* set once we've send MSG_NEWKEYS (will be cleared once we have also received */ unsigned recvnewkeys : 1; /* set once we've received MSG_NEWKEYS (cleared once we have also sent */ unsigned donefirstkex : 1; /* Set to 1 after the first kex has completed, ie the transport layer has been set up */ unsigned our_first_follows_matches : 1; time_t lastkextime; /* time of the last kex */ unsigned int datatrans; /* data transmitted since last kex */ unsigned int datarecv; /* data received since last kex */ }; struct kex_dh_param { mp_int pub; /* e */ mp_int priv; /* x */ }; #if DROPBEAR_ECDH struct kex_ecdh_param { ecc_key key; }; #endif #if DROPBEAR_CURVE25519 #define CURVE25519_LEN 32 struct kex_curve25519_param { unsigned char priv[CURVE25519_LEN]; unsigned char pub[CURVE25519_LEN]; }; /* No header file for curve25519_donna */ int curve25519_donna(unsigned char *out, const unsigned char *secret, const unsigned char *other); #endif #define MAX_KEXHASHBUF 2000 #endif /* DROPBEAR_KEX_H_ */