summaryrefslogtreecommitdiffstats
path: root/src/protocol_null.c
diff options
context:
space:
mode:
authorMatthias Schiffer <mschiffer@universe-factory.net>2012-03-24 22:32:24 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2012-03-24 22:32:24 +0100
commit359e9b6c2b0cc4817b55338f0b89638945d98c50 (patch)
tree731b1b59a96f9ff84a6a5b531964418bee634815 /src/protocol_null.c
parent4ffc28ecd6d914f9c1e5aaf5d5921ee4827bb289 (diff)
downloadfastd-359e9b6c2b0cc4817b55338f0b89638945d98c50.tar
fastd-359e9b6c2b0cc4817b55338f0b89638945d98c50.zip
Rename methods to protocols; fix some command line parse bugs; implement most of the config file parser
Diffstat (limited to 'src/protocol_null.c')
-rw-r--r--src/protocol_null.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/src/protocol_null.c b/src/protocol_null.c
new file mode 100644
index 0000000..f365228
--- /dev/null
+++ b/src/protocol_null.c
@@ -0,0 +1,144 @@
+/*
+ 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 "task.h"
+#include "peer.h"
+
+#include <arpa/inet.h>
+
+
+static bool protocol_handle_config(fastd_context *ctx, const fastd_config *conf, const char *option) {
+ return false;
+}
+
+static bool protocol_check_config(fastd_context *ctx, const fastd_config *conf) {
+ if (conf->n_floating > 1) {
+ pr_error(ctx, "with protocol `null' use can't define more than one floating peer");
+ return false;
+ }
+
+ return true;
+}
+
+static size_t protocol_max_packet_size(fastd_context *ctx) {
+ return fastd_max_packet_size(ctx);
+}
+
+static char* protocol_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 protocol_init(fastd_context *ctx, fastd_peer *peer) {
+ pr_info(ctx, "Connection with %P established.", peer);
+
+ fastd_task_put_send(ctx, peer, fastd_buffer_alloc(0, 0, 0));
+}
+
+static void protocol_handle_recv(fastd_context *ctx, fastd_peer *peer, fastd_buffer buffer) {
+ if (!fastd_peer_is_established(peer)) {
+ pr_info(ctx, "Connection with %P established.", peer);
+
+ fastd_peer_set_established(ctx, peer);
+ }
+
+ if (fastd_peer_is_temporary(peer)) {
+ fastd_peer *perm_peer;
+ for (perm_peer = ctx->peers; perm_peer; perm_peer = perm_peer->next) {
+ if (fastd_peer_is_floating(perm_peer))
+ break;
+ }
+
+ if (!perm_peer) {
+ fastd_buffer_free(buffer);
+ return;
+ }
+
+ peer = fastd_peer_merge(ctx, perm_peer, peer);
+ }
+
+ if (buffer.len)
+ fastd_task_put_handle_recv(ctx, peer, buffer);
+ else
+ fastd_buffer_free(buffer);
+}
+
+static void protocol_send(fastd_context *ctx, fastd_peer *peer, fastd_buffer buffer) {
+ fastd_task_put_send(ctx, peer, buffer);
+}
+
+static void protocol_free_peer_private(fastd_context *ctx, fastd_peer *peer) {
+}
+
+
+const fastd_protocol fastd_protocol_null = {
+ .name = "null",
+
+ .handle_config = protocol_handle_config,
+ .check_config = protocol_check_config,
+
+ .max_packet_size = protocol_max_packet_size,
+
+ .peer_str = protocol_peer_str,
+
+ .init = protocol_init,
+ .handle_recv = protocol_handle_recv,
+ .send = protocol_send,
+
+ .free_peer_private = protocol_free_peer_private,
+};