mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-12-19 16:40:15 +00:00
57c30117c1
[atomicio.c auth-bsdauth.c auth-chall.c auth-options.c auth-passwd.c]
[auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth-skey.c auth.c auth1.c]
[auth2-chall.c auth2-hostbased.c auth2-kbdint.c auth2-none.c]
[auth2-passwd.c auth2-pubkey.c auth2.c authfd.c authfile.c bufaux.c]
[buffer.c canohost.c channels.c cipher-3des1.c cipher-bf1.c]
[cipher-ctr.c cipher.c cleanup.c clientloop.c compat.c compress.c]
[deattack.c dh.c dispatch.c fatal.c groupaccess.c hostfile.c kex.c]
[kexdh.c kexdhc.c kexdhs.c kexgex.c kexgexc.c kexgexs.c key.c log.c]
[mac.c match.c md-sha256.c misc.c monitor.c monitor_fdpass.c]
[monitor_mm.c monitor_wrap.c msg.c nchan.c packet.c progressmeter.c]
[readconf.c readpass.c rsa.c scard.c scp.c servconf.c serverloop.c]
[session.c sftp-client.c sftp-common.c sftp-glob.c sftp-server.c]
[sftp.c ssh-add.c ssh-agent.c ssh-dss.c ssh-keygen.c ssh-keyscan.c]
[ssh-keysign.c ssh-rsa.c ssh.c sshconnect.c sshconnect1.c]
[sshconnect2.c sshd.c sshlogin.c sshpty.c sshtty.c ttymodes.c]
[uidswap.c uuencode.c xmalloc.c]
Put $OpenBSD$ tags back (as comments) to replace the RCSID()s that
Theo nuked - our scripts to sync -portable need them in the files
131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/* $OpenBSD: monitor_fdpass.c,v 1.8 2006/03/25 13:17:02 djm Exp $ */
|
|
/*
|
|
* Copyright 2001 Niels Provos <provos@citi.umich.edu>
|
|
* 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"
|
|
|
|
#include <sys/uio.h>
|
|
|
|
#include "log.h"
|
|
#include "monitor_fdpass.h"
|
|
|
|
void
|
|
mm_send_fd(int sock, int fd)
|
|
{
|
|
#if defined(HAVE_SENDMSG) && (defined(HAVE_ACCRIGHTS_IN_MSGHDR) || defined(HAVE_CONTROL_IN_MSGHDR))
|
|
struct msghdr msg;
|
|
struct iovec vec;
|
|
char ch = '\0';
|
|
ssize_t n;
|
|
#ifndef HAVE_ACCRIGHTS_IN_MSGHDR
|
|
char tmp[CMSG_SPACE(sizeof(int))];
|
|
struct cmsghdr *cmsg;
|
|
#endif
|
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
|
|
msg.msg_accrights = (caddr_t)&fd;
|
|
msg.msg_accrightslen = sizeof(fd);
|
|
#else
|
|
msg.msg_control = (caddr_t)tmp;
|
|
msg.msg_controllen = CMSG_LEN(sizeof(int));
|
|
cmsg = CMSG_FIRSTHDR(&msg);
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
|
|
cmsg->cmsg_level = SOL_SOCKET;
|
|
cmsg->cmsg_type = SCM_RIGHTS;
|
|
*(int *)CMSG_DATA(cmsg) = fd;
|
|
#endif
|
|
|
|
vec.iov_base = &ch;
|
|
vec.iov_len = 1;
|
|
msg.msg_iov = &vec;
|
|
msg.msg_iovlen = 1;
|
|
|
|
if ((n = sendmsg(sock, &msg, 0)) == -1)
|
|
fatal("%s: sendmsg(%d): %s", __func__, fd,
|
|
strerror(errno));
|
|
if (n != 1)
|
|
fatal("%s: sendmsg: expected sent 1 got %ld",
|
|
__func__, (long)n);
|
|
#else
|
|
fatal("%s: UsePrivilegeSeparation=yes not supported",
|
|
__func__);
|
|
#endif
|
|
}
|
|
|
|
int
|
|
mm_receive_fd(int sock)
|
|
{
|
|
#if defined(HAVE_RECVMSG) && (defined(HAVE_ACCRIGHTS_IN_MSGHDR) || defined(HAVE_CONTROL_IN_MSGHDR))
|
|
struct msghdr msg;
|
|
struct iovec vec;
|
|
ssize_t n;
|
|
char ch;
|
|
int fd;
|
|
#ifndef HAVE_ACCRIGHTS_IN_MSGHDR
|
|
char tmp[CMSG_SPACE(sizeof(int))];
|
|
struct cmsghdr *cmsg;
|
|
#endif
|
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
vec.iov_base = &ch;
|
|
vec.iov_len = 1;
|
|
msg.msg_iov = &vec;
|
|
msg.msg_iovlen = 1;
|
|
#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
|
|
msg.msg_accrights = (caddr_t)&fd;
|
|
msg.msg_accrightslen = sizeof(fd);
|
|
#else
|
|
msg.msg_control = tmp;
|
|
msg.msg_controllen = sizeof(tmp);
|
|
#endif
|
|
|
|
if ((n = recvmsg(sock, &msg, 0)) == -1)
|
|
fatal("%s: recvmsg: %s", __func__, strerror(errno));
|
|
if (n != 1)
|
|
fatal("%s: recvmsg: expected received 1 got %ld",
|
|
__func__, (long)n);
|
|
|
|
#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
|
|
if (msg.msg_accrightslen != sizeof(fd))
|
|
fatal("%s: no fd", __func__);
|
|
#else
|
|
cmsg = CMSG_FIRSTHDR(&msg);
|
|
if (cmsg == NULL)
|
|
fatal("%s: no message header", __func__);
|
|
#ifndef BROKEN_CMSG_TYPE
|
|
if (cmsg->cmsg_type != SCM_RIGHTS)
|
|
fatal("%s: expected type %d got %d", __func__,
|
|
SCM_RIGHTS, cmsg->cmsg_type);
|
|
#endif
|
|
fd = (*(int *)CMSG_DATA(cmsg));
|
|
#endif
|
|
return fd;
|
|
#else
|
|
fatal("%s: UsePrivilegeSeparation=yes not supported",
|
|
__func__);
|
|
#endif
|
|
}
|