1 files changed, 138 insertions, 0 deletions
diff --git a/network_cmds/ifconfig.tproj/iffake.c b/network_cmds/ifconfig.tproj/iffake.c
new file mode 100644
index 0000000..c8065a2
--- /dev/null
+++ b/network_cmds/ifconfig.tproj/iffake.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2017 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ * 
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+/*
+ * iffake.c
+ * - manage fake interfaces that pretend to be e.g. ethernet
+ */
+
+/*
+ * Modification History:
+ *
+ * January 17, 2017	Dieter Siegmund (dieter@apple.com)
+ * - created
+ */
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_fake_var.h>
+
+#include <net/route.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <err.h>
+#include <errno.h>
+
+#include "ifconfig.h"
+
+static void
+fake_status(int s)
+{
+	struct ifdrv			ifd;
+	struct if_fake_request		iffr;
+
+	bzero((char *)&ifd, sizeof(ifd));
+	bzero((char *)&iffr, sizeof(iffr));
+	strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
+	ifd.ifd_cmd = IF_FAKE_G_CMD_GET_PEER;
+	ifd.ifd_len = sizeof(iffr);
+	ifd.ifd_data = &iffr;
+	if (ioctl(s, SIOCGDRVSPEC, &ifd) < 0) {
+		return;
+	}
+	if (iffr.iffr_peer_name[0] == '\0') {
+		printf("\tpeer: <none>\n");
+	} else {
+		printf("\tpeer: %s\n", iffr.iffr_peer_name);
+	}
+	return;
+}
+
+static void
+set_peer(int s, const char * operation, const char * val)
+{
+	struct ifdrv			ifd;
+	struct if_fake_request		iffr;
+
+	bzero((char *)&ifd, sizeof(ifd));
+	bzero((char *)&iffr, sizeof(iffr));
+	strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
+	ifd.ifd_cmd = IF_FAKE_S_CMD_SET_PEER;
+	ifd.ifd_len = sizeof(iffr);
+	ifd.ifd_data = &iffr;
+	if (val != NULL) {
+		strlcpy(iffr.iffr_peer_name, val, sizeof(iffr.iffr_peer_name));
+	}
+	if (ioctl(s, SIOCSDRVSPEC, &ifd) < 0) {
+		err(1, "SIOCDRVSPEC %s peer", operation);
+	}
+	return;
+}
+
+static
+DECL_CMD_FUNC(setpeer, val, d)
+{
+	set_peer(s, "set", val);
+	return;
+}
+
+static
+DECL_CMD_FUNC(unsetpeer, val, d)
+{
+	set_peer(s, "unset", NULL);
+	return;
+}
+
+static struct cmd fake_cmds[] = {
+	DEF_CLONE_CMD_ARG("peer",		setpeer),
+	DEF_CMD_OPTARG("-peer",			unsetpeer),
+};
+static struct afswtch af_fake = {
+	.af_name	= "af_fake",
+	.af_af		= AF_UNSPEC,
+	.af_other_status = fake_status,
+};
+
+static __constructor void
+fake_ctor(void)
+{
+#define	N(a)	(sizeof(a) / sizeof(a[0]))
+	int i;
+	
+	for (i = 0; i < N(fake_cmds);  i++)
+		cmd_register(&fake_cmds[i]);
+	af_register(&af_fake);
+#undef N
+}
+