/* $OpenBSD: buffer.c,v 1.36 2014/04/30 05:29:56 djm Exp $ */
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/*
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* Copyright (c) 2012 Damien Miller <djm@mindrot.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Emulation wrappers for legacy OpenSSH buffer API atop sshbuf */
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#include "includes.h"
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#include <sys/types.h>
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#include "buffer.h"
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#include "log.h"
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#include "ssherr.h"
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void
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buffer_append(Buffer *buffer, const void *data, u_int len)
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{
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int ret;
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if ((ret = sshbuf_put(buffer, data, len)) != 0)
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fatal("%s: %s", __func__, ssh_err(ret));
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}
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void *
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buffer_append_space(Buffer *buffer, u_int len)
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{
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int ret;
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u_char *p;
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if ((ret = sshbuf_reserve(buffer, len, &p)) != 0)
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fatal("%s: %s", __func__, ssh_err(ret));
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return p;
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}
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int
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buffer_check_alloc(Buffer *buffer, u_int len)
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{
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int ret = sshbuf_check_reserve(buffer, len);
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if (ret == 0)
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return 1;
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if (ret == SSH_ERR_NO_BUFFER_SPACE)
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return 0;
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fatal("%s: %s", __func__, ssh_err(ret));
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}
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int
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buffer_get_ret(Buffer *buffer, void *buf, u_int len)
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{
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int ret;
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if ((ret = sshbuf_get(buffer, buf, len)) != 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(Buffer *buffer, void *buf, u_int len)
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{
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if (buffer_get_ret(buffer, buf, len) == -1)
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fatal("%s: buffer error", __func__);
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}
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int
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buffer_consume_ret(Buffer *buffer, u_int bytes)
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{
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int ret = sshbuf_consume(buffer, bytes);
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if (ret == 0)
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return 0;
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if (ret == SSH_ERR_MESSAGE_INCOMPLETE)
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return -1;
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fatal("%s: %s", __func__, ssh_err(ret));
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}
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void
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buffer_consume(Buffer *buffer, u_int bytes)
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{
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if (buffer_consume_ret(buffer, bytes) == -1)
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fatal("%s: buffer error", __func__);
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}
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int
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buffer_consume_end_ret(Buffer *buffer, u_int bytes)
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{
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int ret = sshbuf_consume_end(buffer, bytes);
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if (ret == 0)
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return 0;
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if (ret == SSH_ERR_MESSAGE_INCOMPLETE)
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return -1;
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fatal("%s: %s", __func__, ssh_err(ret));
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}
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void
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buffer_consume_end(Buffer *buffer, u_int bytes)
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{
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if (buffer_consume_end_ret(buffer, bytes) == -1)
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fatal("%s: buffer error", __func__);
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}
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