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-rw-r--r--examples/Makefile.am12
-rw-r--r--examples/nfexp-mnl-dump.c87
-rw-r--r--examples/nfexp-mnl-event.c79
3 files changed, 177 insertions, 1 deletions
diff --git a/examples/Makefile.am b/examples/Makefile.am
index 684998b..55bd750 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -5,7 +5,9 @@ check_PROGRAMS = nfct-mnl-create \
nfct-mnl-dump \
nfct-mnl-event \
nfct-mnl-flush \
- nfct-mnl-get
+ nfct-mnl-get \
+ nfexp-mnl-dump \
+ nfexp-mnl-event
nfct_mnl_create_SOURCES = nfct-mnl-create.c
nfct_mnl_create_LDADD = ../src/libnetfilter_conntrack.la
@@ -30,3 +32,11 @@ nfct_mnl_flush_LDFLAGS = -dynamic -ldl -lmnl
nfct_mnl_get_SOURCES = nfct-mnl-get.c
nfct_mnl_get_LDADD = ../src/libnetfilter_conntrack.la
nfct_mnl_get_LDFLAGS = -dynamic -ldl -lmnl
+
+nfexp_mnl_dump_SOURCES = nfexp-mnl-dump.c
+nfexp_mnl_dump_LDADD = ../src/libnetfilter_conntrack.la
+nfexp_mnl_dump_LDFLAGS = -dynamic -ldl -lmnl
+
+nfexp_mnl_event_SOURCES = nfexp-mnl-event.c
+nfexp_mnl_event_LDADD = ../src/libnetfilter_conntrack.la
+nfexp_mnl_event_LDFLAGS = -dynamic -ldl -lmnl
diff --git a/examples/nfexp-mnl-dump.c b/examples/nfexp-mnl-dump.c
new file mode 100644
index 0000000..b44c7d8
--- /dev/null
+++ b/examples/nfexp-mnl-dump.c
@@ -0,0 +1,87 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <arpa/inet.h>
+
+#include <libmnl/libmnl.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct nf_expect *exp;
+ uint32_t type = NFCT_T_UNKNOWN;
+ char buf[4096];
+
+ exp = nfexp_new();
+ if (exp == NULL)
+ return MNL_CB_OK;
+
+ if (nfexp_nlmsg_parse(nlh, exp) < 0) {
+ perror("failed to parse message from kernel");
+ return MNL_CB_ERROR;
+ }
+
+ nfexp_snprintf(buf, sizeof(buf), exp, type, NFCT_O_DEFAULT, 0);
+ printf("%s\n", buf);
+
+ nfexp_destroy(exp);
+
+ return MNL_CB_OK;
+}
+
+int main(void)
+{
+ struct mnl_socket *nl;
+ char buf[MNL_SOCKET_BUFFER_SIZE];
+ struct nlmsghdr *nlh;
+ struct nfgenmsg *nfh;
+ uint32_t seq, portid;
+ int ret;
+
+ 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);
+
+ nlh = mnl_nlmsg_put_header(buf);
+ nlh->nlmsg_type = (NFNL_SUBSYS_CTNETLINK_EXP << 8) | IPCTNL_MSG_EXP_GET;
+ nlh->nlmsg_flags = NLM_F_REQUEST|NLM_F_DUMP|NLM_F_ACK;
+ nlh->nlmsg_seq = seq = time(NULL);
+
+ nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg));
+ nfh->nfgen_family = AF_INET;
+ nfh->version = NFNETLINK_V0;
+ nfh->res_id = 0;
+
+ ret = mnl_socket_sendto(nl, nlh, nlh->nlmsg_len);
+ if (ret == -1) {
+ perror("mnl_socket_recvfrom");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ while (1) {
+ ret = mnl_cb_run(buf, ret, seq, portid, data_cb, NULL);
+ if (ret <= MNL_CB_STOP)
+ break;
+
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ }
+ if (ret == -1) {
+ perror("mnl_socket_recvfrom");
+ exit(EXIT_FAILURE);
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}
diff --git a/examples/nfexp-mnl-event.c b/examples/nfexp-mnl-event.c
new file mode 100644
index 0000000..5de97ec
--- /dev/null
+++ b/examples/nfexp-mnl-event.c
@@ -0,0 +1,79 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+
+#include <libmnl/libmnl.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+
+static int data_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct nf_expect *exp;
+ uint32_t type = NFCT_T_UNKNOWN;
+ char buf[4096];
+
+ switch(nlh->nlmsg_type & 0xFF) {
+ case IPCTNL_MSG_EXP_NEW:
+ if (nlh->nlmsg_flags & (NLM_F_CREATE|NLM_F_EXCL))
+ type = NFCT_T_NEW;
+ else
+ type = NFCT_T_UPDATE;
+ break;
+ case IPCTNL_MSG_EXP_DELETE:
+ type = NFCT_T_DESTROY;
+ break;
+ }
+
+ exp = nfexp_new();
+ if (exp == NULL)
+ return MNL_CB_OK;
+
+ nfexp_nlmsg_parse(nlh, exp);
+
+ nfexp_snprintf(buf, sizeof(buf), exp,
+ type, NFCT_O_DEFAULT, 0);
+ printf("%s\n", buf);
+
+ nfexp_destroy(exp);
+
+ return MNL_CB_OK;
+}
+
+int main(void)
+{
+ struct mnl_socket *nl;
+ char buf[MNL_SOCKET_BUFFER_SIZE];
+ int ret;
+
+ nl = mnl_socket_open(NETLINK_NETFILTER);
+ if (nl == NULL) {
+ perror("mnl_socket_open");
+ exit(EXIT_FAILURE);
+ }
+
+ if (mnl_socket_bind(nl, NF_NETLINK_CONNTRACK_EXP_NEW |
+ NF_NETLINK_CONNTRACK_EXP_UPDATE |
+ NF_NETLINK_CONNTRACK_EXP_DESTROY,
+ MNL_SOCKET_AUTOPID) < 0) {
+ perror("mnl_socket_bind");
+ exit(EXIT_FAILURE);
+ }
+
+ while (1) {
+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
+ if (ret == -1) {
+ perror("mnl_socket_recvfrom");
+ exit(EXIT_FAILURE);
+ }
+
+ ret = mnl_cb_run(buf, ret, 0, 0, data_cb, NULL);
+ if (ret == -1) {
+ perror("mnl_cb_run");
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ mnl_socket_close(nl);
+
+ return 0;
+}