mirror of
https://github.com/openssh/libopenssh
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ea5ceecdc2
to exist as thin wrappers around sshbuf_* doesn't yet pass regress (breakage in hostkey checking, probably related to new sshkey_* return values)
138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/* $OpenBSD: bufbn.c,v 1.6 2007/06/02 09:04:58 djm Exp $*/
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* Auxiliary functions for storing and retrieving various data types to/from
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* Buffers.
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*
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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* software must be clearly marked as such, and if the derived work is
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* incompatible with the protocol description in the RFC file, it must be
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* called by a name other than "ssh" or "Secure Shell".
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*
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*
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* SSH2 packet format added by Markus Friedl
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* Copyright (c) 2000 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <openssl/bn.h>
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#include <string.h>
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#include <stdarg.h>
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#include "xmalloc.h"
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#include "buffer.h"
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#include "log.h"
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#include "misc.h"
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#include "err.h"
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/*
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* Stores an BIGNUM in the buffer with a 2-byte msb first bit count, followed
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* by (bits+7)/8 bytes of binary data, msb first.
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*/
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int
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buffer_put_bignum_ret(Buffer *buffer, const BIGNUM *value)
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{
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int ret;
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if ((ret = sshbuf_put_bignum1(buffer, value)) != 0) {
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error("%s: %s", __func__, ssh_err(ret));
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return -1;
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}
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return 0;
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}
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void
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buffer_put_bignum(Buffer *buffer, const BIGNUM *value)
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{
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if (buffer_put_bignum_ret(buffer, value) == -1)
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fatal("buffer_put_bignum: buffer error");
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}
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/*
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* Retrieves a BIGNUM from the buffer.
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*/
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int
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buffer_get_bignum_ret(Buffer *buffer, BIGNUM *value)
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{
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int ret;
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if ((ret = sshbuf_get_bignum1(buffer, value)) != 0) {
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error("%s: %s", __func__, ssh_err(ret));
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return -1;
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}
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return 0;
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}
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void
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buffer_get_bignum(Buffer *buffer, BIGNUM *value)
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{
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if (buffer_get_bignum_ret(buffer, value) == -1)
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fatal("buffer_get_bignum: buffer error");
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}
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/*
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* Stores a BIGNUM in the buffer in SSH2 format.
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*/
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int
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buffer_put_bignum2_ret(Buffer *buffer, const BIGNUM *value)
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{
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int ret;
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if ((ret = sshbuf_put_bignum2(buffer, value)) != 0) {
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error("%s: %s", __func__, ssh_err(ret));
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return -1;
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}
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return 0;
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}
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void
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buffer_put_bignum2(Buffer *buffer, const BIGNUM *value)
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{
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if (buffer_put_bignum2_ret(buffer, value) == -1)
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fatal("buffer_put_bignum2: buffer error");
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}
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int
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buffer_get_bignum2_ret(Buffer *buffer, BIGNUM *value)
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{
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int ret;
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if ((ret = sshbuf_get_bignum2(buffer, value)) != 0) {
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error("%s: %s", __func__, ssh_err(ret));
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return -1;
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}
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return 0;
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}
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void
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buffer_get_bignum2(Buffer *buffer, BIGNUM *value)
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{
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if (buffer_get_bignum2_ret(buffer, value) == -1)
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fatal("buffer_get_bignum2: buffer error");
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}
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