Adding upstream version 1:9.2p1.upstream/1%9.2p1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 94 insertions, 0 deletions

diff --git a/msg.c b/msg.c
new file mode 100644
index 0000000..d22c4e4
--- /dev/null
+++ b/msg.c
@@ -0,0 +1,94 @@
+/* $OpenBSD: msg.c,v 1.20 2020/10/18 11:32:01 djm Exp $ */
+/*
+ * 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"
+
+#include <sys/types.h>
+#include <sys/uio.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdarg.h>
+
+#include "sshbuf.h"
+#include "ssherr.h"
+#include "log.h"
+#include "atomicio.h"
+#include "msg.h"
+#include "misc.h"
+
+int
+ssh_msg_send(int fd, u_char type, struct sshbuf *m)
+{
+	u_char buf[5];
+	u_int mlen = sshbuf_len(m);
+
+	debug3_f("type %u", (unsigned int)type & 0xff);
+
+	put_u32(buf, mlen + 1);
+	buf[4] = type;		/* 1st byte of payload is mesg-type */
+	if (atomicio(vwrite, fd, buf, sizeof(buf)) != sizeof(buf)) {
+		error_f("write: %s", strerror(errno));
+		return (-1);
+	}
+	if (atomicio(vwrite, fd, sshbuf_mutable_ptr(m), mlen) != mlen) {
+		error_f("write: %s", strerror(errno));
+		return (-1);
+	}
+	return (0);
+}
+
+int
+ssh_msg_recv(int fd, struct sshbuf *m)
+{
+	u_char buf[4], *p;
+	u_int msg_len;
+	int r;
+
+	debug3("ssh_msg_recv entering");
+
+	if (atomicio(read, fd, buf, sizeof(buf)) != sizeof(buf)) {
+		if (errno != EPIPE)
+			error_f("read header: %s", strerror(errno));
+		return (-1);
+	}
+	msg_len = get_u32(buf);
+	if (msg_len > sshbuf_max_size(m)) {
+		error_f("read: bad msg_len %u", msg_len);
+		return (-1);
+	}
+	sshbuf_reset(m);
+	if ((r = sshbuf_reserve(m, msg_len, &p)) != 0) {
+		error_fr(r, "reserve");
+		return -1;
+	}
+	if (atomicio(read, fd, p, msg_len) != msg_len) {
+		error_f("read: %s", strerror(errno));
+		return (-1);
+	}
+	return (0);
+}