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authorPablo Neira Ayuso <pablo@netfilter.org>2014-04-27 15:04:07 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2014-05-02 18:31:13 +0200
commitc179ee88d91a84fc75dc4602cca500e8fa72ed66 (patch)
treeb6b149622e02c81265a673145d6b9a260776f799 /src/fd.c
initial commit
This patch bootstrap the new nft-sync software. Basically, this software aims to support two different setups: 1) Rule-set repository server. The software serves the nft rule-set to clients that request the ruleset. Basically from the system that acts as repository, you have to run: # nft-sync -c ../contrib/nft-sync.conf.server Then, from the client: # nft-sync -c ../contrib/nft-sync.conf.client --fetch Which displays the nft rule-set in the standard output, so you can inspect the nft rule-set. Alternatively, the client can also retrieve and apply the nft rule-set using the pull command instead: # nft-sync -c ../contrib/nft-sync.conf.client --pull [ Note that this command above does not work in this bootstrap yet ] 2) Rule-set synchronization: In case of primary-backup and multiprimary firewall configurations, the software makes sure that the firewall cluster is deploying the same filtering policy. In this case, you have to launch the process: # nft-sync -c ../contrib/nft-sync.conf --sync [ Note that this command above does not work in this bootstrap yet ] This bootstrap provides the basic infrastructure as a proof-of-concept. Many of the necessary features are still lacking: * Implement --sync and --pull commands. * Interaction with nft through libnftnl, which allows the software to retrieve the local nft rule-set, as well as to parse it and apply it. * SSL support, specifically the repository mode needs it to make sure nobody can steal your filtering policy from the network. * IPv6 support. * Allow to serve different rule-sets in the repository mode. And many others that will be added progressively. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/fd.c')
-rw-r--r--src/fd.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/src/fd.c b/src/fd.c
new file mode 100644
index 0000000..46b443a
--- /dev/null
+++ b/src/fd.c
@@ -0,0 +1,57 @@
+/*
+ * (C) 2014 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
+ * 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.
+ */
+
+#include <stdlib.h>
+#include <event.h>
+#include <stdint.h>
+#include <fd.h>
+
+static void nft_fd_cb(int _fd, short mask, void *data)
+{
+ struct nft_fd *nfd = data;
+
+ nfd->cb(nfd, mask);
+}
+
+void nft_fd_setup(struct nft_fd *nfd, int fd,
+ void (*cb)(struct nft_fd *fd, uint32_t mask), void *data)
+{
+ /* add assertion */
+
+ nfd->fd = fd;
+ nfd->cb = cb;
+ nfd->data = data;
+}
+
+void nft_fd_register(struct nft_fd *nfd, uint32_t events)
+{
+ unsigned short mask = events;
+
+ /* add assertion */
+
+ event_set(&nfd->event, nfd->fd, mask, nft_fd_cb, nfd);
+ event_add(&nfd->event, NULL);
+}
+
+void nft_fd_unregister(struct nft_fd *fd)
+{
+ /* add assertion */
+ event_del(&fd->event);
+ fd->fd = -1;
+}
+
+struct nft_fd *nft_fd_alloc(void)
+{
+ return calloc(1, sizeof(struct nft_fd));
+}
+
+void nft_fd_free(struct nft_fd *nfd)
+{
+ free(nfd);
+}