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b0fb6872ed
[atomicio.c auth-bsdauth.c auth-chall.c auth-krb5.c auth-options.c]
[auth-pam.c auth-passwd.c auth-rh-rsa.c auth-rhosts.c auth-rsa.c]
[auth-shadow.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-acss.c cipher-aes.c]
[cipher-bf1.c cipher-ctr.c cipher.c cleanup.c clientloop.c compat.c]
[compress.c deattack.c dh.c dispatch.c dns.c entropy.c fatal.c]
[groupaccess.c hostfile.c includes.h kex.c kexdh.c kexdhc.c]
[kexdhs.c kexgex.c kexgexc.c kexgexs.c key.c log.c loginrec.c]
[loginrec.h logintest.c mac.c match.c md-sha256.c md5crypt.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-rand-helper.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 openbsd-compat/bsd-arc4random.c]
[openbsd-compat/bsd-closefrom.c openbsd-compat/bsd-cygwin_util.c]
[openbsd-compat/bsd-getpeereid.c openbsd-compat/bsd-misc.c]
[openbsd-compat/bsd-nextstep.c openbsd-compat/bsd-snprintf.c]
[openbsd-compat/bsd-waitpid.c openbsd-compat/fake-rfc2553.c]
RCSID() can die
130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*
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* Copyright 2001 Niels Provos <provos@citi.umich.edu>
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* 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 "includes.h"
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#include <sys/uio.h>
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#include "log.h"
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#include "monitor_fdpass.h"
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void
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mm_send_fd(int sock, int fd)
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{
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#if defined(HAVE_SENDMSG) && (defined(HAVE_ACCRIGHTS_IN_MSGHDR) || defined(HAVE_CONTROL_IN_MSGHDR))
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struct msghdr msg;
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struct iovec vec;
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char ch = '\0';
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ssize_t n;
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#ifndef HAVE_ACCRIGHTS_IN_MSGHDR
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char tmp[CMSG_SPACE(sizeof(int))];
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struct cmsghdr *cmsg;
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#endif
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memset(&msg, 0, sizeof(msg));
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#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
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msg.msg_accrights = (caddr_t)&fd;
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msg.msg_accrightslen = sizeof(fd);
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#else
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msg.msg_control = (caddr_t)tmp;
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msg.msg_controllen = CMSG_LEN(sizeof(int));
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cmsg = CMSG_FIRSTHDR(&msg);
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cmsg->cmsg_len = CMSG_LEN(sizeof(int));
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cmsg->cmsg_level = SOL_SOCKET;
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cmsg->cmsg_type = SCM_RIGHTS;
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*(int *)CMSG_DATA(cmsg) = fd;
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#endif
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vec.iov_base = &ch;
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vec.iov_len = 1;
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msg.msg_iov = &vec;
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msg.msg_iovlen = 1;
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if ((n = sendmsg(sock, &msg, 0)) == -1)
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fatal("%s: sendmsg(%d): %s", __func__, fd,
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strerror(errno));
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if (n != 1)
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fatal("%s: sendmsg: expected sent 1 got %ld",
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__func__, (long)n);
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#else
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fatal("%s: UsePrivilegeSeparation=yes not supported",
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__func__);
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#endif
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}
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int
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mm_receive_fd(int sock)
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{
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#if defined(HAVE_RECVMSG) && (defined(HAVE_ACCRIGHTS_IN_MSGHDR) || defined(HAVE_CONTROL_IN_MSGHDR))
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struct msghdr msg;
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struct iovec vec;
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ssize_t n;
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char ch;
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int fd;
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#ifndef HAVE_ACCRIGHTS_IN_MSGHDR
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char tmp[CMSG_SPACE(sizeof(int))];
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struct cmsghdr *cmsg;
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#endif
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memset(&msg, 0, sizeof(msg));
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vec.iov_base = &ch;
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vec.iov_len = 1;
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msg.msg_iov = &vec;
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msg.msg_iovlen = 1;
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#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
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msg.msg_accrights = (caddr_t)&fd;
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msg.msg_accrightslen = sizeof(fd);
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#else
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msg.msg_control = tmp;
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msg.msg_controllen = sizeof(tmp);
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#endif
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if ((n = recvmsg(sock, &msg, 0)) == -1)
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fatal("%s: recvmsg: %s", __func__, strerror(errno));
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if (n != 1)
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fatal("%s: recvmsg: expected received 1 got %ld",
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__func__, (long)n);
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#ifdef HAVE_ACCRIGHTS_IN_MSGHDR
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if (msg.msg_accrightslen != sizeof(fd))
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fatal("%s: no fd", __func__);
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#else
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cmsg = CMSG_FIRSTHDR(&msg);
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if (cmsg == NULL)
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fatal("%s: no message header", __func__);
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#ifndef BROKEN_CMSG_TYPE
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if (cmsg->cmsg_type != SCM_RIGHTS)
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fatal("%s: expected type %d got %d", __func__,
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SCM_RIGHTS, cmsg->cmsg_type);
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#endif
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fd = (*(int *)CMSG_DATA(cmsg));
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#endif
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return fd;
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#else
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fatal("%s: UsePrivilegeSeparation=yes not supported",
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__func__);
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#endif
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}
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