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/*
* (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 <endian.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, htobe64(nfacct->pkts));
mnl_attr_put_u64(nlh, NFACCT_PKTS, htobe64(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]),
(unsigned long long)
be64toh(mnl_attr_get_u64(tb[NFACCT_PKTS])),
(unsigned long long)
be64toh(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);
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