From 610201f50fdb0594e9885594b69e4ee69c71dd08 Mon Sep 17 00:00:00 2001 From: des Date: Sun, 23 Jun 2002 14:01:54 +0000 Subject: Vendor import of OpenSSH 3.3. --- crypto/openssh/monitor_fdpass.c | 96 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 crypto/openssh/monitor_fdpass.c (limited to 'crypto/openssh/monitor_fdpass.c') diff --git a/crypto/openssh/monitor_fdpass.c b/crypto/openssh/monitor_fdpass.c new file mode 100644 index 0000000..9696c86 --- /dev/null +++ b/crypto/openssh/monitor_fdpass.c @@ -0,0 +1,96 @@ +/* + * Copyright 2001 Niels Provos + * 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: monitor_fdpass.c,v 1.3 2002/06/04 23:05:49 markus Exp $"); + +#include + +#include "log.h" +#include "monitor_fdpass.h" + +void +mm_send_fd(int socket, int fd) +{ + struct msghdr msg; + char tmp[CMSG_SPACE(sizeof(int))]; + struct cmsghdr *cmsg; + struct iovec vec; + char ch = '\0'; + int n; + + memset(&msg, 0, sizeof(msg)); + 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; + + vec.iov_base = &ch; + vec.iov_len = 1; + msg.msg_iov = &vec; + msg.msg_iovlen = 1; + + if ((n = sendmsg(socket, &msg, 0)) == -1) + fatal("%s: sendmsg(%d): %s", __func__, fd, + strerror(errno)); + if (n != 1) + fatal("%s: sendmsg: expected sent 1 got %d", + __func__, n); +} + +int +mm_receive_fd(int socket) +{ + struct msghdr msg; + char tmp[CMSG_SPACE(sizeof(int))]; + struct cmsghdr *cmsg; + struct iovec vec; + char ch; + int fd, n; + + memset(&msg, 0, sizeof(msg)); + vec.iov_base = &ch; + vec.iov_len = 1; + msg.msg_iov = &vec; + msg.msg_iovlen = 1; + msg.msg_control = tmp; + msg.msg_controllen = sizeof(tmp); + + if ((n = recvmsg(socket, &msg, 0)) == -1) + fatal("%s: recvmsg: %s", __func__, strerror(errno)); + if (n != 1) + fatal("%s: recvmsg: expected received 1 got %d", + __func__, n); + + cmsg = CMSG_FIRSTHDR(&msg); + if (cmsg->cmsg_type != SCM_RIGHTS) + fatal("%s: expected type %d got %d", __func__, + SCM_RIGHTS, cmsg->cmsg_type); + fd = (*(int *)CMSG_DATA(cmsg)); + return fd; +} -- cgit v1.1