1 files changed, 98 insertions, 0 deletions
diff --git a/demo-setup.c b/demo-setup.c
new file mode 100644
index 0000000..fa18c05
--- /dev/null
+++ b/demo-setup.c
@@ -0,0 +1,98 @@
+/* See LICENSE file for copyright and license details. */
+#include "libsecauth.h"
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define PEPPER "pepper"
+
+
+int
+main(int argc, char *argv[])
+{
+	struct libsecauth_spec spec;
+	char *message, *hash;
+	size_t size, off;
+	ssize_t r;
+	int fd;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s password", argv[0]);
+		return 1;
+	}
+
+	/* -- SERVER -- */
+
+	memset(&spec, 0, sizeof(spec));
+	spec.prehash = "$6$rounds=2000$salt1$";
+	spec.xferhash = "$1$salt2$";
+	spec.client_rounds = 100;
+	spec.server_rounds = 0;
+
+	size = libsecauth_format_spec(&spec, NULL, 0);
+	message = malloc(size);
+	if (!message) {
+		perror("malloc");
+		return 1;
+	}
+	libsecauth_format_spec(&spec, message, size);
+
+	/* -- CLIENT -- */
+
+	memset(&spec, 0, sizeof(spec));
+	if (libsecauth_parse_spec(&spec, message)) {
+		perror("libsecauth_parse_spec");
+		return 1;
+	}
+
+	hash = libsecauth_client_hash(&spec, argv[1]);
+	if (!hash) {
+		perror("libsecauth_client_hash");
+		return 1;
+	}
+	free(message);
+	message = hash;
+
+	/* -- SERVER -- */
+
+	memset(&spec, 0, sizeof(spec));
+	spec.prehash = "$6$rounds=2000$salt1$";
+	spec.xferhash = "$1$salt2$";
+	spec.client_rounds = 100;
+	spec.server_rounds = 0;
+	spec.posthash = "$6$rounds=1000$salt3$";
+	if (libsecauth_server_hash(&spec, message, PEPPER, &hash) < 0) {
+		perror("libsecauth_server_hash");
+		return 1;
+	}
+	spec.expected = hash;
+	free(message);
+	size = libsecauth_format_spec(&spec, NULL, 0);
+	message = malloc(size);
+	if (!message) {
+		perror("malloc");
+		return 1;
+	}
+	libsecauth_format_spec(&spec, message, size);
+	free(hash);
+
+	message[size - 1] = '\n';
+	fd = open("democonfig", O_WRONLY | O_CREAT | O_TRUNC, 0600);
+	if (fd < 0) {
+		perror("open");
+		return 1;
+	}
+	for (off = 0; off < size; off += (size_t)r) {
+		r = write(fd, &message[off], size - off);
+		if (r <= 0) {
+			perror("write");
+			return 1;
+		}
+	}
+	close(fd);
+	free(message);
+
+	return 0;
+}