From ab0325ae7906230f1ea82f08b27c72b075e9a13d Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Tue, 23 May 2017 17:28:12 +0200
Subject: build fixed; added lib util

---
 code/util/mknode.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 code/util/mknode.c

(limited to 'code/util/mknode.c')

diff --git a/code/util/mknode.c b/code/util/mknode.c
new file mode 100644
index 0000000..0c389dc
--- /dev/null
+++ b/code/util/mknode.c
@@ -0,0 +1,63 @@
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include <core.h>
+#include "util.h"
+
+#define FN_LEN  256
+
+static char fn_key[FN_LEN];
+static char fn_node[FN_LEN];
+
+static int v_rng(void *buf, size_t bufsize) {
+    int fd;
+    
+    if((fd = open("/dev/urandom", O_RDONLY)) < 0) return -1;
+    size_t nb = read(fd, buf, bufsize);
+    close(fd);
+    if (nb != bufsize) return -1;
+    return 0;
+}
+
+static void usage(char *arg) {
+    fprintf(stderr, "Usage: %s <name> [address]\n", arg);
+    exit(1);
+}
+
+int main(int argc, char *argv[]) {
+    int rv;
+    ECPContext ctx;
+    ECPDHKey key;
+    ECPNode node;
+    
+    if ((argc < 2) || (argc > 3)) usage(argv[0]);
+
+    if (strlen(argv[1]) > FN_LEN - 6) usage(argv[0]);
+    strcpy(fn_node, argv[1]);
+    strcpy(fn_key, argv[1]);
+    strcat(fn_key, ".priv");
+    strcat(fn_node, ".pub");
+    
+    rv = ecp_ctx_create(&ctx);
+    if (rv) goto err;
+    ctx.rng = v_rng;
+    
+    rv = ecp_dhkey_generate(&ctx, &key);
+    if (rv) goto err;
+
+    rv = ecp_node_init(&ctx, &node, &key.public, (argc == 3) ? argv[2] : NULL);
+    if (rv) goto err;
+
+    rv = ecp_util_key_save(&ctx, &key, fn_key);
+    if (rv) goto err;
+
+    rv = ecp_util_node_save(&ctx, &node, fn_node);
+    if (rv) goto err;
+
+    return 0;
+    err:
+    printf("ERR:%d\n", rv);
+    return 1;
+}
\ No newline at end of file
-- 
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