diff options
author | Pablo Neira Ayuso <pablo@netfilter.org> | 2011-10-16 17:50:55 +0200 |
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committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2011-10-16 21:28:13 +0200 |
commit | 1cfe3cf24db29bd9274c2e59587cc0960e9db47c (patch) | |
tree | 4e71628daab46e7197d15960cbfd7618a5976db2 /src |
intial import of libnetfilter_acct
Diffstat (limited to 'src')
-rw-r--r-- | src/Makefile.am | 8 | ||||
-rw-r--r-- | src/internal.h | 12 | ||||
-rw-r--r-- | src/libnetfilter_acct.c | 154 | ||||
-rw-r--r-- | src/libnetfilter_acct.map | 15 |
4 files changed, 189 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am new file mode 100644 index 0000000..bbcfe51 --- /dev/null +++ b/src/Makefile.am @@ -0,0 +1,8 @@ +include $(top_srcdir)/Make_global.am +lib_LTLIBRARIES = libnetfilter_acct.la + +libnetfilter_acct_la_LIBADD = ${LIBMNL_LIBS} +libnetfilter_acct_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libnetfilter_acct.map -version-info $(LIBVERSION) +libnetfilter_acct_la_SOURCES = libnetfilter_acct.c \ + libnetfilter_acct.map \ + internal.h diff --git a/src/internal.h b/src/internal.h new file mode 100644 index 0000000..3a88d1a --- /dev/null +++ b/src/internal.h @@ -0,0 +1,12 @@ +#ifndef INTERNAL_H +#define INTERNAL_H 1 + +#include "config.h" +#ifdef HAVE_VISIBILITY_HIDDEN +# define __visible __attribute__((visibility("default"))) +# define EXPORT_SYMBOL(x) typeof(x) (x) __visible +#else +# define EXPORT_SYMBOL +#endif + +#endif 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); diff --git a/src/libnetfilter_acct.map b/src/libnetfilter_acct.map new file mode 100644 index 0000000..f5c3172 --- /dev/null +++ b/src/libnetfilter_acct.map @@ -0,0 +1,15 @@ +LIBNETFILTER_ACCT_1.0 { +global: + nfacct_add; + nfacct_list; + nfacct_list_cb; + nfacct_flush; + nfacct_delete; + nfacct_list; + +local: *; +}; + +#LIBNETFILTER_ACCT_1.1 { +# _my_new_func; +#} LIBNETFILTER_ACCT_1.0; |