Add setup, start command

1 files changed, 50 insertions, 0 deletions

diff --git a/setup.c b/setup.c
new file mode 100644
index 0000000..5517d7e
--- /dev/null
+++ b/setup.c
@@ -0,0 +1,50 @@
+/* Copyright (c) 2018, Curtis McEnroe <programble@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/syslimits.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+int main(int argc, char *argv[]) {
+    if (argc < 2) return EX_USAGE;
+
+    uint32_t key[4];
+    char public[PATH_MAX];
+    char private[PATH_MAX];
+
+    snprintf(public, sizeof(public), "public/%s", argv[1]);
+    arc4random_buf(key, sizeof(key));
+    snprintf(
+        private, sizeof(private),
+        "private/%08x%08x%08x%08x",
+        key[0], key[1], key[2], key[3]
+    );
+
+    int fd = open(public, O_CREAT | O_EXCL, 0644);
+    if (fd < 0) err(EX_CANTCREAT, "%s", public);
+
+    snprintf(public, sizeof(public), "../public/%s", argv[1]);
+    int error = symlink(public, private);
+    if (error) err(EX_CANTCREAT, "%s", private);
+
+    printf("%08x%08x%08x%08x\n", key[0], key[1], key[2], key[3]);
+    return EX_OK;
+}