mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-12-30 22:22:06 +00:00
9f63f22aa0
[atomicio.c atomicio.h authfd.c clientloop.c monitor_wrap.c msg.c
progressmeter.c scp.c sftp-client.c ssh-keyscan.c ssh.h sshconnect.c
sshd.c]
deal with typing of write vs read in atomicio
74 lines
2.5 KiB
C
74 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2002 Markus Friedl. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
#include "includes.h"
|
|
RCSID("$OpenBSD: msg.c,v 1.6 2003/06/28 16:23:06 deraadt Exp $");
|
|
|
|
#include "buffer.h"
|
|
#include "getput.h"
|
|
#include "log.h"
|
|
#include "atomicio.h"
|
|
#include "msg.h"
|
|
|
|
void
|
|
ssh_msg_send(int fd, u_char type, Buffer *m)
|
|
{
|
|
u_char buf[5];
|
|
u_int mlen = buffer_len(m);
|
|
|
|
debug3("ssh_msg_send: type %u", (unsigned int)type & 0xff);
|
|
|
|
PUT_32BIT(buf, mlen + 1);
|
|
buf[4] = type; /* 1st byte of payload is mesg-type */
|
|
if (atomicio(vwrite, fd, buf, sizeof(buf)) != sizeof(buf))
|
|
fatal("ssh_msg_send: write");
|
|
if (atomicio(vwrite, fd, buffer_ptr(m), mlen) != mlen)
|
|
fatal("ssh_msg_send: write");
|
|
}
|
|
|
|
int
|
|
ssh_msg_recv(int fd, Buffer *m)
|
|
{
|
|
u_char buf[4];
|
|
ssize_t res;
|
|
u_int msg_len;
|
|
|
|
debug3("ssh_msg_recv entering");
|
|
|
|
res = atomicio(read, fd, buf, sizeof(buf));
|
|
if (res != sizeof(buf)) {
|
|
if (res == 0)
|
|
return -1;
|
|
fatal("ssh_msg_recv: read: header %ld", (long)res);
|
|
}
|
|
msg_len = GET_32BIT(buf);
|
|
if (msg_len > 256 * 1024)
|
|
fatal("ssh_msg_recv: read: bad msg_len %u", msg_len);
|
|
buffer_clear(m);
|
|
buffer_append_space(m, msg_len);
|
|
res = atomicio(read, fd, buffer_ptr(m), msg_len);
|
|
if (res != msg_len)
|
|
fatal("ssh_msg_recv: read: %ld != msg_len", (long)res);
|
|
return 0;
|
|
}
|