intial import of libnetfilter_acct

1 files changed, 154 insertions, 0 deletions

diff --git a/src/libnetfilter_acct.c b/src/libnetfilter_acct.c
new file mode 100644
index 0000000..5311430
--- /dev/null
+++ b/src/libnetfilter_acct.c
@@ -0,0 +1,154 @@
+/*
+ * (C) 2011 by Pablo Neira Ayuso <pablo@netfilter.org>
+ * (C) 2011 by Intra2net AG <http://www.intra2net.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the Lesser GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#include "internal.h"
+
+#include <time.h>
+#include <libmnl/libmnl.h>
+#include <linux/netfilter/nfnetlink.h>
+#include <linux/netfilter/nfnetlink_acct.h>
+
+#include <libnetfilter_acct/libnetfilter_acct.h>
+
+struct nlmsghdr *nfacct_add(char *buf, struct nfacct *nfacct)
+{
+	struct nlmsghdr *nlh;
+	struct nfgenmsg *nfh;
+
+	nlh = mnl_nlmsg_put_header(buf);
+	nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_NEW;
+	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
+	nlh->nlmsg_seq = time(NULL);
+
+	nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
+	nfh->nfgen_family = AF_UNSPEC;
+	nfh->version = NFNETLINK_V0;
+	nfh->res_id = 0;
+
+	mnl_attr_put_strz(nlh, NFACCT_NAME, nfacct->name);
+	mnl_attr_put_u64(nlh, NFACCT_PKTS, nfacct->pkts);
+	mnl_attr_put_u64(nlh, NFACCT_PKTS, nfacct->bytes);
+
+	return nlh;
+}
+EXPORT_SYMBOL(nfacct_add);
+
+struct nlmsghdr *nfacct_list(char *buf)
+{
+	struct nlmsghdr *nlh;
+	struct nfgenmsg *nfh;
+
+	nlh = mnl_nlmsg_put_header(buf);
+	nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_GET;
+	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+	nlh->nlmsg_seq = time(NULL);
+
+	nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
+	nfh->nfgen_family = AF_UNSPEC;
+	nfh->version = NFNETLINK_V0;
+	nfh->res_id = 0;
+
+	return nlh;
+}
+EXPORT_SYMBOL(nfacct_list);
+
+static int nfacct_list_attr_cb(const struct nlattr *attr, void *data)
+{
+	const struct nlattr **tb = data;
+	int type = mnl_attr_get_type(attr);
+
+	if (mnl_attr_type_valid(attr, NFACCT_MAX) < 0)
+		return MNL_CB_OK;
+
+	switch(type) {
+	case NFACCT_NAME:
+		if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) {
+			perror("mnl_attr_validate");
+			return MNL_CB_ERROR;
+		}
+		break;
+	case NFACCT_PKTS:
+		if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0) {
+			perror("mnl_attr_validate");
+			return MNL_CB_ERROR;
+		}
+		break;
+	case NFACCT_BYTES:
+		if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0) {
+			perror("mnl_attr_validate");
+			return MNL_CB_ERROR;
+		}
+		break;
+	}
+	tb[type] = attr;
+	return MNL_CB_OK;
+}
+
+int nfacct_list_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct nlattr *tb[NFACCT_MAX+1] = {};
+	struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
+	bool *full = data;
+
+	mnl_attr_parse(nlh, sizeof(*nfg), nfacct_list_attr_cb, tb);
+	if (!tb[NFACCT_NAME] && !tb[NFACCT_PKTS] && !tb[NFACCT_BYTES])
+		return MNL_CB_OK;
+
+	if (*full) {
+		printf("%s = { pkts = %.12llu,\tbytes = %.12llu }; \n",
+			mnl_attr_get_str(tb[NFACCT_NAME]),
+			mnl_attr_get_u64(tb[NFACCT_PKTS]),
+			mnl_attr_get_u64(tb[NFACCT_BYTES]));
+	} else {
+		printf("%s\n", mnl_attr_get_str(tb[NFACCT_NAME]));
+	}
+
+	return MNL_CB_OK;
+}
+EXPORT_SYMBOL(nfacct_list_cb);
+
+struct nlmsghdr *nfacct_flush(char *buf)
+{
+	struct nlmsghdr *nlh;
+	struct nfgenmsg *nfh;
+
+	nlh = mnl_nlmsg_put_header(buf);
+	nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_DEL;
+	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
+	nlh->nlmsg_seq = time(NULL);
+
+	nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
+	nfh->nfgen_family = AF_UNSPEC;
+	nfh->version = NFNETLINK_V0;
+	nfh->res_id = 0;
+
+	return nlh;
+}
+EXPORT_SYMBOL(nfacct_flush);
+
+struct nlmsghdr *nfacct_delete(char *buf, const char *filter_name)
+{
+	struct nlmsghdr *nlh;
+	struct nfgenmsg *nfh;
+
+	nlh = mnl_nlmsg_put_header(buf);
+	nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_DEL;
+	nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK;
+	nlh->nlmsg_seq = time(NULL);
+
+	nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
+	nfh->nfgen_family = AF_UNSPEC;
+	nfh->version = NFNETLINK_V0;
+	nfh->res_id = 0;
+
+	mnl_attr_put_strz(nlh, NFACCT_NAME, filter_name);
+
+	return nlh;
+}
+EXPORT_SYMBOL(nfacct_delete);