1 files changed, 42 insertions, 0 deletions
diff --git a/key2root-addkey.c b/key2root-addkey.c
new file mode 100644
index 0000000..9dab78b
--- /dev/null
+++ b/key2root-addkey.c
@@ -0,0 +1,42 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "arg.h"
+
+
+char *argv0;
+
+
+static void
+usage(void)
+{
+	fprintf(stderr, "usage: %s [-r] user key-name [crypt-parameters]\n", argv0);
+	exit(1);
+}
+
+
+int
+main(int argc, char *argv[])
+{
+	int allow_replace = 0;
+
+	ARGBEGIN {
+	case 'r':
+		allow_replace = 1;
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc < 2 || argc > 3)
+		usage();
+
+	if (isatty(STDIN_FILENO)) {
+		fprintf(stderr, "%s: standard input must not be a TTY.\n", argv0);
+		exit(1);
+	}
+
+	return 0;
+}