Require libuecc; rename cfxp to ecfxp; add some basic infrastructure for crypto implementation

1 files changed, 117 insertions, 0 deletions

diff --git a/src/method_ec25519_fhmqvc_xsalsa20_poly1305.c b/src/method_ec25519_fhmqvc_xsalsa20_poly1305.c
new file mode 100644
index 0000000..2a01ccd
--- /dev/null
+++ b/src/method_ec25519_fhmqvc_xsalsa20_poly1305.c
@@ -0,0 +1,117 @@
+/*
+  Copyright (c) 2012, Matthias Schiffer <mschiffer@universe-factory.net>
+  Partly based on QuickTun Copyright (c) 2010, Ivo Smits <Ivo@UCIS.nl>.
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the documentation
+       and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#define _GNU_SOURCE
+
+#include "fastd.h"
+#include "peer.h"
+
+#include <arpa/inet.h>
+
+#include <libuecc/ecc.h>
+#include <crypto_secretbox_xsalsa20poly1305.h>
+
+
+typedef struct _method_peer_config {
+} method_peer_config;
+
+typedef struct _method_peer_state {
+} method_peer_state;
+
+
+static bool method_check_config(fastd_context *ctx, const fastd_config *conf) {
+	return true;
+}
+
+static size_t method_max_packet_size(fastd_context *ctx) {
+	return (fastd_max_packet_size(ctx) - crypto_secretbox_xsalsa20poly1305_NONCEBYTES);
+}
+
+static char* method_peer_str(const fastd_context *ctx, const fastd_peer *peer) {
+	char addr_buf[INET6_ADDRSTRLEN] = "";
+	char *ret;
+
+	const char *temp = fastd_peer_is_temporary(peer) ? " (temporary)" : "";
+
+	switch (peer->address.sa.sa_family) {
+	case AF_UNSPEC:
+		if (asprintf(&ret, "<floating>%s", temp) > 0)
+			return ret;
+		break;
+
+	case AF_INET:
+		if (inet_ntop(AF_INET, &peer->address.in.sin_addr, addr_buf, sizeof(addr_buf))) {
+			if (asprintf(&ret, "%s:%u%s", addr_buf, ntohs(peer->address.in.sin_port), temp) > 0)
+				return ret;
+		}
+		break;
+
+	case AF_INET6:
+		if (inet_ntop(AF_INET6, &peer->address.in6.sin6_addr, addr_buf, sizeof(addr_buf))) {
+			if (asprintf(&ret, "[%s]:%u%s", addr_buf, ntohs(peer->address.in6.sin6_port), temp) > 0)
+				return ret;
+		}
+		break;
+
+	default:
+		exit_bug(ctx, "unsupported address family");
+	}
+
+	return NULL;
+}
+
+static void method_init(fastd_context *ctx, fastd_peer *peer) {
+	pr_info(ctx, "Initializing session with %P...", peer);
+}
+
+static void method_handle_recv(fastd_context *ctx, fastd_peer *peer, fastd_buffer buffer) {
+	fastd_buffer_free(buffer);
+}
+
+static void method_send(fastd_context *ctx, fastd_peer *peer, fastd_buffer buffer) {
+	fastd_buffer_free(buffer);
+}
+
+static void method_free_peer_private(fastd_context *ctx, fastd_peer *peer) {
+}
+
+
+const fastd_method fastd_method_ec25519_fhmqvc_xsalsa20_poly1305 = {
+	.name = "ec25519-fhmqvc-xsalsa20-poly1305",
+
+	.check_config = method_check_config,
+
+	.max_packet_size = method_max_packet_size,
+
+	.peer_str = method_peer_str,
+
+	.init = method_init,
+	.handle_recv = method_handle_recv,
+	.send = method_send,
+
+	.free_peer_private = method_free_peer_private,
+};