Signed-off-by: Ken-ichirou MATSUZAWA <chamas@xxxxxxxxxxxxx>
---
utils/.gitignore | 1 +
utils/Makefile.am | 6 ++-
utils/nf-log.c | 139 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 145 insertions(+), 1 deletion(-)
create mode 100644 utils/nf-log.c
diff --git a/utils/.gitignore b/utils/.gitignore
index 64e4588..01fa66d 100644
--- a/utils/.gitignore
+++ b/utils/.gitignore
@@ -1,2 +1,3 @@
/nfulnl_test
/ulog_test
+/nf-log
diff --git a/utils/Makefile.am b/utils/Makefile.am
index f961b6c..dfe5f34 100644
--- a/utils/Makefile.am
+++ b/utils/Makefile.am
@@ -1,11 +1,15 @@
include ${top_srcdir}/Make_global.am
-check_PROGRAMS = nfulnl_test
+check_PROGRAMS = nfulnl_test nf-log
nfulnl_test_SOURCES = nfulnl_test.c
nfulnl_test_LDADD = ../src/libnetfilter_log.la
nfulnl_test_LDFLAGS = -dynamic
+nf_log_SOURCES = nf-log.c
+nf_log_LDADD = ../src/libnetfilter_log.la
+nf_log_LDFLAGS = -dynamic -lmnl
+
if BUILD_IPULOG
check_PROGRAMS += ulog_test
diff --git a/utils/nf-log.c b/utils/nf-log.c
new file mode 100644
index 0000000..e044321
--- /dev/null
+++ b/utils/nf-log.c
@@ -0,0 +1,139 @@
+/* This example is placed in the public domain. */
+#include <stdio.h>
+#include <stdlib.h>
+#include <arpa/inet.h>
+
+#include <linux/netfilter/nfnetlink_log.h>
+
+#include <libmnl/libmnl.h>
+#include <libnetfilter_log/libnetfilter_log.h>
+
+static int log_cb(const struct nlmsghdr *nlh, void *data)
+{
+ char buf[NFLOG_DATA_SIZE];
+ struct nflog_data *nfad;
+ struct nfulnl_msg_packet_hdr *ph = NULL;
+ const char *prefix = NULL;
+ uint32_t mark = 0;
+ int ret;
+
+ nfad = nflog_data_init(buf);
+ if (nfad == NULL)
+ return MNL_CB_ERROR;
+ ret = nflog_nlmsg_parse(nlh, nfad);
+ if (ret != MNL_CB_OK)
+ return ret;
+
+ ph = nflog_get_msg_packet_hdr(nfad);
+ prefix = nflog_get_prefix(nfad);
+ mark = nflog_get_nfmark(nfad);
+
+ printf("log received (prefix=\"%s\" hw=0x%04x hook=%u mark=%u)\n",
+ prefix ? prefix : "", ntohs(ph->hw_protocol), ph->hook,
+ mark);
+
+ return MNL_CB_OK;
+}
+
+int main(int argc, char *argv[])
+{
+ struct mnl_socket *nl;
+ char buf[MNL_SOCKET_BUFFER_SIZE];
+ struct nlmsghdr *nlh;
+ struct nfulnl_msg_config_mode nfmode;
+ struct nfulnl_msg_config_cmd nfcmd;
+ int ret;
+ unsigned int portid, qnum;
+
+ if (argc != 2) {
+ printf("Usage: %s [queue_num]\n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+ qnum = atoi(argv[1]);
+
+ nl = mnl_socket_open(NETLINK_NETFILTER);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+ portid = mnl_socket_get_portid(nl);
+
+ /* kernels 3.8 and later is required to omit PF_(UN)BIND */
+
+ nlh = nfnl_nlmsg_put_header(buf, NFULNL_MSG_CONFIG, AF_INET, 0);
+ nfcmd.command = NFULNL_CFG_CMD_PF_UNBIND;
+ if (nfnl_attr_put_cfg_cmd(nlh, &nfcmd) < 0) {
+ perror("nfnl_attr_put_cfg_cmd");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_sendto");
+ exit(EXIT_FAILURE);
+ }
+
+ nlh = nfnl_nlmsg_put_header(buf, NFULNL_MSG_CONFIG, AF_INET, 0);
+ nfcmd.command = NFULNL_CFG_CMD_PF_BIND;
+ if (nfnl_attr_put_cfg_cmd(nlh, &nfcmd) < 0) {
+ perror("nfnl_attr_put_cfg_cmd");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_sendto");
+ exit(EXIT_FAILURE);
+ }
+
+ nlh = nfnl_nlmsg_put_header(buf, NFULNL_MSG_CONFIG, AF_INET, qnum);
+ nfcmd.command = NFULNL_CFG_CMD_BIND;
+ if (nfnl_attr_put_cfg_cmd(nlh, &nfcmd) < 0) {
+ perror("nfnl_attr_put_cfg_cmd");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_sendto");
+ exit(EXIT_FAILURE);
+ }
+
+ nlh = nfnl_nlmsg_put_header(buf, NFULNL_MSG_CONFIG, AF_UNSPEC, qnum);
+ nfmode.copy_mode = NFULNL_COPY_PACKET;
+ nfmode.copy_range = 0xFFFF;
+ if (nfnl_attr_put_cfg_mode(nlh, &nfmode) < 0) {
+ perror("nfnl_attr_put_cfg_mode");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
+ perror("mnl_socket_sendto");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ if (ret == -1) {
+ perror("mnl_socket_recvfrom");
+ exit(EXIT_FAILURE);
+ }
+ while (ret > 0) {
+ ret = mnl_cb_run(buf, ret, 0, portid, log_cb, NULL);
+ if (ret < 0){
+ perror("mnl_cb_run");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ if (ret == -1) {
+ perror("mnl_socket_recvfrom");
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
--
2.1.4
--
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