initial import

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 468 insertions, 0 deletions

diff --git a/src/nfacct.c b/src/nfacct.c
new file mode 100644
index 0000000..a1bb47e
--- /dev/null
+++ b/src/nfacct.c
@@ -0,0 +1,468 @@
+/*
+ * (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 GNU Affero General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <time.h>
+#include <errno.h>
+
+#include <libmnl/libmnl.h>
+#include <libnetfilter_acct/libnetfilter_acct.h>
+
+enum {
+	NFACCT_CMD_NONE = 0,
+	NFACCT_CMD_LIST,
+	NFACCT_CMD_ADD,
+	NFACCT_CMD_DELETE,
+	NFACCT_CMD_GET,
+	NFACCT_CMD_FLUSH,
+	NFACCT_CMD_VERSION,
+	NFACCT_CMD_HELP,
+};
+
+static int nfacct_cmd_list(int argc, char *argv[]);
+static int nfacct_cmd_add(int argc, char *argv[]);
+static int nfacct_cmd_delete(int argc, char *argv[]);
+static int nfacct_cmd_get(int argc, char *argv[]);
+static int nfacct_cmd_flush(int argc, char *argv[]);
+static int nfacct_cmd_version(int argc, char *argv[]);
+static int nfacct_cmd_help(int argc, char *argv[]);
+
+static void usage(char *argv[])
+{
+	fprintf(stderr, "Usage: %s command [parameters]...\n", argv[0]);
+}
+
+static void nfacct_perror(const char *msg)
+{
+	if (errno == 0) {
+		fprintf(stderr, "nfacct v%s: %s\n", VERSION, msg);
+	} else {
+		fprintf(stderr, "nfacct v%s: %s: %s\n",
+			VERSION, msg, strerror(errno));
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	int cmd = NFACCT_CMD_NONE, ret = 0;
+
+	if (argc < 2) {
+		usage(argv);
+		exit(EXIT_FAILURE);
+	}
+
+	if (strncmp(argv[1], "list", strlen(argv[1])) == 0)
+		cmd = NFACCT_CMD_LIST;
+	else if (strncmp(argv[1], "add", strlen(argv[1])) == 0)
+		cmd = NFACCT_CMD_ADD;
+	else if (strncmp(argv[1], "delete", strlen(argv[1])) == 0)
+		cmd = NFACCT_CMD_DELETE;
+	else if (strncmp(argv[1], "get", strlen(argv[1])) == 0)
+		cmd = NFACCT_CMD_GET;
+	else if (strncmp(argv[1], "flush", strlen(argv[1])) == 0)
+		cmd = NFACCT_CMD_FLUSH;
+	else if (strncmp(argv[1], "version", strlen(argv[1])) == 0)
+		cmd = NFACCT_CMD_VERSION;
+	else if (strncmp(argv[1], "help", strlen(argv[1])) == 0)
+		cmd = NFACCT_CMD_HELP;
+	else {
+		fprintf(stderr, "nfacct v%s: Unknown command: %s\n",
+			VERSION, argv[1]);
+		usage(argv);
+		exit(EXIT_FAILURE);
+	}
+
+	switch(cmd) {
+	case NFACCT_CMD_LIST:
+		ret = nfacct_cmd_list(argc, argv);
+		break;
+	case NFACCT_CMD_ADD:
+		ret = nfacct_cmd_add(argc, argv);
+		break;
+	case NFACCT_CMD_DELETE:
+		ret = nfacct_cmd_delete(argc, argv);
+		break;
+	case NFACCT_CMD_GET:
+		ret = nfacct_cmd_get(argc, argv);
+		break;
+	case NFACCT_CMD_FLUSH:
+		ret = nfacct_cmd_flush(argc, argv);
+		break;
+	case NFACCT_CMD_VERSION:
+		ret = nfacct_cmd_version(argc, argv);
+		break;
+	case NFACCT_CMD_HELP:
+		ret = nfacct_cmd_help(argc, argv);
+		break;
+	}
+	return ret < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}
+
+static int nfacct_cb(const struct nlmsghdr *nlh, void *data)
+{
+	struct nfacct *nfacct;
+	char buf[4096];
+
+	nfacct = nfacct_alloc();
+	if (nfacct == NULL) {
+		nfacct_perror("OOM");
+		goto err;
+	}
+
+	if (nfacct_nlmsg_parse_payload(nlh, nfacct) < 0) {
+		nfacct_perror("nfacct_parse_nl_msg");
+		goto err_free;
+	}
+
+	nfacct_snprintf(buf, sizeof(buf), nfacct, NFACCT_SNPRINTF_F_FULL);
+	printf("%s\n", buf);
+
+err_free:
+	nfacct_free(nfacct);
+err:
+	return MNL_CB_OK;
+}
+
+static int nfacct_cmd_list(int argc, char *argv[])
+{
+	bool zeroctr = false;
+	struct mnl_socket *nl;
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	struct nlmsghdr *nlh;
+	unsigned int seq, portid;
+	int ret;
+
+	if (argc == 3) {
+		if (strncmp(argv[2], "reset", strlen(argv[2])) == 0) {
+			zeroctr = true;
+		}
+	}
+
+	seq = time(NULL);
+	nlh = nfacct_nlmsg_build_hdr(buf, zeroctr ?
+					NFNL_MSG_ACCT_GET_CTRZERO :
+					NFNL_MSG_ACCT_GET,
+				     NLM_F_DUMP, seq);
+
+	nl = mnl_socket_open(NETLINK_NETFILTER);
+	if (nl == NULL) {
+		nfacct_perror("mnl_socket_open");
+		return -1;
+	}
+
+	if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+		nfacct_perror("mnl_socket_bind");
+		return -1;
+	}
+	portid = mnl_socket_get_portid(nl);
+
+	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+		perror("mnl_socket_send");
+		exit(EXIT_FAILURE);
+	}
+
+	ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	while (ret > 0) {
+		ret = mnl_cb_run(buf, ret, seq, portid, nfacct_cb, NULL);
+		if (ret <= 0)
+			break;
+		ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	}
+	if (ret == -1) {
+		nfacct_perror("error");
+		return -1;
+	}
+	mnl_socket_close(nl);
+
+	return 0;
+}
+
+static int nfacct_cmd_add(int argc, char *argv[])
+{
+	struct mnl_socket *nl;
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	struct nlmsghdr *nlh;
+	uint32_t portid, seq;
+	struct nfacct *nfacct;
+	int ret;
+
+	if (argc < 3) {
+		nfacct_perror("missing object name");
+		exit(EXIT_FAILURE);
+	}
+
+	nfacct = nfacct_alloc();
+	if (nfacct == NULL) {
+		nfacct_perror("OOM");
+		exit(EXIT_FAILURE);
+	}
+
+	nfacct_attr_set(nfacct, NFACCT_ATTR_NAME, argv[2]);
+
+	seq = time(NULL);
+	nlh = nfacct_nlmsg_build_hdr(buf, NFNL_MSG_ACCT_NEW,
+				     NLM_F_CREATE | NLM_F_ACK, seq);
+	nfacct_nlmsg_build_payload(nlh, nfacct);
+
+	nfacct_free(nfacct);
+
+	nl = mnl_socket_open(NETLINK_NETFILTER);
+	if (nl == NULL) {
+		nfacct_perror("mnl_socket_open");
+		return -1;
+	}
+
+	if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+		nfacct_perror("mnl_socket_bind");
+		return -1;
+	}
+	portid = mnl_socket_get_portid(nl);
+
+	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+		nfacct_perror("mnl_socket_send");
+		return -1;
+	}
+
+	ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	while (ret > 0) {
+		ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
+		if (ret <= 0)
+			break;
+		ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	}
+	if (ret == -1) {
+		nfacct_perror("error");
+		return -1;
+	}
+	mnl_socket_close(nl);
+
+	return 0;
+}
+
+static int nfacct_cmd_delete(int argc, char *argv[])
+{
+	struct mnl_socket *nl;
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	struct nlmsghdr *nlh;
+	uint32_t portid, seq;
+	struct nfacct *nfacct;
+	int ret;
+
+	if (argc < 3) {
+		nfacct_perror("missing object name");
+		return -1;
+	}
+
+	nfacct = nfacct_alloc();
+	if (nfacct == NULL) {
+		nfacct_perror("OOM");
+		return -1;
+	}
+
+	nfacct_attr_set(nfacct, NFACCT_ATTR_NAME, argv[2]);
+
+	seq = time(NULL);
+	nlh = nfacct_nlmsg_build_hdr(buf, NFNL_MSG_ACCT_DEL,
+				     NLM_F_ACK, seq);
+	nfacct_nlmsg_build_payload(nlh, nfacct);
+
+	nfacct_free(nfacct);
+
+	nl = mnl_socket_open(NETLINK_NETFILTER);
+	if (nl == NULL) {
+		nfacct_perror("mnl_socket_open");
+		return -1;
+	}
+
+	if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+		nfacct_perror("mnl_socket_bind");
+		return -1;
+	}
+	portid = mnl_socket_get_portid(nl);
+
+	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+		nfacct_perror("mnl_socket_send");
+		return -1;
+	}
+
+	ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	while (ret > 0) {
+		ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
+		if (ret <= 0)
+			break;
+		ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	}
+	if (ret == -1) {
+		nfacct_perror("error");
+		return -1;
+	}
+
+	mnl_socket_close(nl);
+
+	return 0;
+}
+
+static int nfacct_cmd_get(int argc, char *argv[])
+{
+	bool zeroctr = false;
+	struct mnl_socket *nl;
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	struct nlmsghdr *nlh;
+	uint32_t portid, seq;
+	struct nfacct *nfacct;
+	int ret;
+
+	if (argc < 3) {
+		nfacct_perror("missing object name");
+		exit(EXIT_FAILURE);
+	}
+
+	if (argc == 4) {
+		if (strncmp(argv[3], "reset", strlen(argv[3])) == 0) {
+			zeroctr = true;
+		}
+	}
+
+	nfacct = nfacct_alloc();
+	if (nfacct == NULL) {
+		nfacct_perror("OOM");
+		exit(EXIT_FAILURE);
+	}
+	nfacct_attr_set(nfacct, NFACCT_ATTR_NAME, argv[2]);
+
+	seq = time(NULL);
+	nlh = nfacct_nlmsg_build_hdr(buf, zeroctr ?
+					NFNL_MSG_ACCT_GET_CTRZERO :
+					NFNL_MSG_ACCT_GET,
+				     NLM_F_ACK, seq);
+
+	nfacct_nlmsg_build_payload(nlh, nfacct);
+
+	nfacct_free(nfacct);
+
+	nl = mnl_socket_open(NETLINK_NETFILTER);
+	if (nl == NULL) {
+		nfacct_perror("mnl_socket_open");
+		return -1;
+	}
+
+	if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+		nfacct_perror("mnl_socket_bind");
+		return -1;
+	}
+	portid = mnl_socket_get_portid(nl);
+
+	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+		nfacct_perror("mnl_socket_send");
+		return -1;
+	}
+
+	ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	while (ret > 0) {
+		ret = mnl_cb_run(buf, ret, seq, portid, nfacct_cb, NULL);
+		if (ret <= 0)
+			break;
+		ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	}
+	if (ret == -1) {
+		nfacct_perror("error");
+		return -1;
+	}
+	mnl_socket_close(nl);
+
+	return 0;
+}
+
+static int nfacct_cmd_flush(int argc, char *argv[])
+{
+	struct mnl_socket *nl;
+	char buf[MNL_SOCKET_BUFFER_SIZE];
+	struct nlmsghdr *nlh;
+	uint32_t portid, seq;
+	int ret;
+
+	seq = time(NULL);
+	nlh = nfacct_nlmsg_build_hdr(buf, NFNL_MSG_ACCT_DEL, NLM_F_ACK, seq);
+
+	nl = mnl_socket_open(NETLINK_NETFILTER);
+	if (nl == NULL) {
+		nfacct_perror("mnl_socket_open");
+		return -1;
+	}
+
+	if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+		nfacct_perror("mnl_socket_bind");
+		return -1;
+	}
+	portid = mnl_socket_get_portid(nl);
+
+	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+		nfacct_perror("mnl_socket_send");
+		return -1;
+	}
+
+	ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	while (ret > 0) {
+		ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
+		if (ret <= 0)
+			break;
+		ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+	}
+	if (ret == -1) {
+		nfacct_perror("error");
+		return -1;
+	}
+
+	mnl_socket_close(nl);
+
+	return 0;
+}
+
+static const char version_msg[] =
+	"nfacct v%s: utility for the Netfilter extended accounting "
+	"infrastructure\n"
+	"Copyright (C) 2011 Pablo Neira Ayuso <pablo@netfilter.org>\n"
+	"Copyright (C) 2011 Intra2net AG <http://www.intra2net.com>\n"
+	"This program comes with ABSOLUTELY NO WARRANTY.\n"
+	"This is free software, and you are welcome to redistribute it under "
+	"certain \nconditions; see LICENSE file distributed in this package "
+	"for details.\n";
+
+static int nfacct_cmd_version(int argc, char *argv[])
+{
+	printf(version_msg, VERSION);
+	return 0;
+}
+
+static const char help_msg[] =
+	"nfacct v%s: utility for the Netfilter extended accounting "
+	"infrastructure\n"
+	"Usage: %s command [parameters]...\n\n"
+	"Commands:\n"
+	"  list [reset]\t\tList the accounting object table (and reset)\n"
+	"  add object-name\tAdd new accounting object to table\n"
+	"  delete object-name\tDelete existing accounting object\n"
+	"  get object-name\tGet existing accounting object\n"
+	"  flush\t\t\tFlush accounting object table\n"
+	"  version\t\tDisplay version and disclaimer\n"
+	"  help\t\t\tDisplay this help message\n";
+
+static int nfacct_cmd_help(int argc, char *argv[])
+{
+	printf(help_msg, VERSION, argv[0]);
+	return 0;
+}