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authorDamien Miller <djm@mindrot.org>2002-03-13 12:47:54 +1100
committerDamien Miller <djm@mindrot.org>2002-03-13 12:47:54 +1100
commit646e7cf3d7e7d4231c2d97d27c09fe5fe1d749e2 (patch)
treea693368c47d2d044514878fbb1516f87b487f78b /monitor_fdpass.c
parent29bdd2c9bca2737e7a246ed50fd827a6ccba0c61 (diff)
Import of Niels Provos' 20020312 ssh-complete.diff
PAM, Cygwin and OSF SIA will not work for sure
Diffstat (limited to 'monitor_fdpass.c')
-rw-r--r--monitor_fdpass.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/monitor_fdpass.c b/monitor_fdpass.c
new file mode 100644
index 00000000..46087ae6
--- /dev/null
+++ b/monitor_fdpass.c
@@ -0,0 +1,89 @@
+/*
+ * 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"
+RCSID("$OpenBSD$");
+
+#include <sys/uio.h>
+
+#include "ssh.h"
+#include "log.h"
+#include "xmalloc.h"
+#include "misc.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;
+
+ 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 (sendmsg(socket, &msg, 0) == -1)
+ fatal("%s: sendmsg(%d)", __FUNCTION__, fd);
+}
+
+int
+mm_receive_fd(int socket)
+{
+ struct msghdr msg;
+ char tmp[CMSG_SPACE(sizeof(int))];
+ struct cmsghdr *cmsg;
+ struct iovec vec;
+ char ch;
+
+ 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 (recvmsg(socket, &msg, 0) == -1)
+ fatal("%s: recvmsg", __FUNCTION__);
+
+ cmsg = CMSG_FIRSTHDR(&msg);
+ if (cmsg->cmsg_type != SCM_RIGHTS)
+ fatal("%s: expected type %d got %d", __FUNCTION__,
+ SCM_RIGHTS, cmsg->cmsg_type);
+ return (*(int *)CMSG_DATA(cmsg));
+}