GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/ssh/lib/../msg.c Lines: 0 30 0.0 %
Date: 2017-11-13 Branches: 0 14 0.0 %

Line Branch Exec Source
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/* $OpenBSD: msg.c,v 1.16 2015/01/15 09:40:00 djm Exp $ */
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/*
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 * Copyright (c) 2002 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 <sys/uio.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include "sshbuf.h"
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#include "ssherr.h"
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#include "log.h"
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#include "atomicio.h"
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#include "msg.h"
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#include "misc.h"
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int
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ssh_msg_send(int fd, u_char type, struct sshbuf *m)
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{
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	u_char buf[5];
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	u_int mlen = sshbuf_len(m);
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	debug3("ssh_msg_send: type %u", (unsigned int)type & 0xff);
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	put_u32(buf, mlen + 1);
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	buf[4] = type;		/* 1st byte of payload is mesg-type */
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	if (atomicio(vwrite, fd, buf, sizeof(buf)) != sizeof(buf)) {
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		error("ssh_msg_send: write");
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		return (-1);
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	}
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	if (atomicio(vwrite, fd, (u_char *)sshbuf_ptr(m), mlen) != mlen) {
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		error("ssh_msg_send: write");
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		return (-1);
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	}
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	return (0);
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}
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int
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ssh_msg_recv(int fd, struct sshbuf *m)
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{
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	u_char buf[4], *p;
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	u_int msg_len;
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	int r;
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	debug3("ssh_msg_recv entering");
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	if (atomicio(read, fd, buf, sizeof(buf)) != sizeof(buf)) {
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		if (errno != EPIPE)
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			error("ssh_msg_recv: read: header");
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		return (-1);
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	}
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	msg_len = get_u32(buf);
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	if (msg_len > 256 * 1024) {
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		error("ssh_msg_recv: read: bad msg_len %u", msg_len);
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		return (-1);
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	}
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	sshbuf_reset(m);
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	if ((r = sshbuf_reserve(m, msg_len, &p)) != 0) {
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		error("%s: buffer error: %s", __func__, ssh_err(r));
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		return -1;
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	}
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	if (atomicio(read, fd, p, msg_len) != msg_len) {
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		error("ssh_msg_recv: read: %s", strerror(errno));
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		return (-1);
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	}
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	return (0);
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}