mirror of
https://github.com/openssh/libopenssh
synced 2026-04-16 17:56:33 +00:00
ea5ceecdc2
to exist as thin wrappers around sshbuf_* doesn't yet pass regress (breakage in hostkey checking, probably related to new sshkey_* return values)
117 lines
2.4 KiB
C
117 lines
2.4 KiB
C
/* $OpenBSD: buffer.c,v 1.32 2010/02/09 03:56:28 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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* Functions for manipulating fifo buffers (that can grow if needed).
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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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#include <sys/param.h>
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#include <stdio.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 "err.h"
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/* Appends data to the buffer, expanding it if necessary. */
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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("buffer_get: buffer error");
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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("buffer_consume: buffer error");
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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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