1 files changed, 66 insertions, 0 deletions
diff --git a/contrib/wireguard-tools/wg.c b/contrib/wireguard-tools/wg.c
new file mode 100644
index 000000000000..648097061448
--- /dev/null
+++ b/contrib/wireguard-tools/wg.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "subcommands.h"
+#include "version.h"
+
+const char *PROG_NAME;
+
+static const struct {
+	const char *subcommand;
+	int (*function)(int, const char**);
+	const char *description;
+} subcommands[] = {
+	{ "show", show_main, "Shows the current configuration and device information" },
+	{ "showconf", showconf_main, "Shows the current configuration of a given WireGuard interface, for use with `setconf'" },
+	{ "set", set_main, "Change the current configuration, add peers, remove peers, or change peers" },
+	{ "setconf", setconf_main, "Applies a configuration file to a WireGuard interface" },
+	{ "addconf", setconf_main, "Appends a configuration file to a WireGuard interface" },
+	{ "syncconf", setconf_main, "Synchronizes a configuration file to a WireGuard interface" },
+	{ "genkey", genkey_main, "Generates a new private key and writes it to stdout" },
+	{ "genpsk", genkey_main, "Generates a new preshared key and writes it to stdout" },
+	{ "pubkey", pubkey_main, "Reads a private key from stdin and writes a public key to stdout" }
+};
+
+static void show_usage(FILE *file)
+{
+	fprintf(file, "Usage: %s <cmd> [<args>]\n\n", PROG_NAME);
+	fprintf(file, "Available subcommands:\n");
+	for (size_t i = 0; i < sizeof(subcommands) / sizeof(subcommands[0]); ++i)
+		fprintf(file, "  %s: %s\n", subcommands[i].subcommand, subcommands[i].description);
+	fprintf(file, "You may pass `--help' to any of these subcommands to view usage.\n");
+}
+
+int main(int argc, const char *argv[])
+{
+	PROG_NAME = argv[0];
+
+	if (argc == 2 && (!strcmp(argv[1], "-v") || !strcmp(argv[1], "--version") || !strcmp(argv[1], "version"))) {
+		printf("wireguard-tools v%s - https://git.zx2c4.com/wireguard-tools/\n", WIREGUARD_TOOLS_VERSION);
+		return 0;
+	}
+	if (argc == 2 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help") || !strcmp(argv[1], "help"))) {
+		show_usage(stdout);
+		return 0;
+	}
+
+	if (argc == 1) {
+		static const char *new_argv[] = { "show", NULL };
+		return show_main(1, new_argv);
+	}
+
+	for (size_t i = 0; i < sizeof(subcommands) / sizeof(subcommands[0]); ++i) {
+		if (!strcmp(argv[1], subcommands[i].subcommand))
+			return subcommands[i].function(argc - 1, argv + 1);
+	}
+
+	fprintf(stderr, "Invalid subcommand: `%s'\n", argv[1]);
+	show_usage(stderr);
+	return 1;
+}