diff options
| -rw-r--r-- | utils/.gitignore | 1 | ||||
| -rw-r--r-- | utils/Makefile.am | 4 | ||||
| -rw-r--r-- | utils/conntrack_dump_filter_tuple.c | 70 |
3 files changed, 75 insertions, 0 deletions
diff --git a/utils/.gitignore b/utils/.gitignore index 63dfcb2..0de05c0 100644 --- a/utils/.gitignore +++ b/utils/.gitignore @@ -3,6 +3,7 @@ /conntrack_delete /conntrack_dump /conntrack_dump_filter +/conntrack_dump_filter_tuple /conntrack_events /conntrack_filter /conntrack_flush diff --git a/utils/Makefile.am b/utils/Makefile.am index 69bafe6..438ca74 100644 --- a/utils/Makefile.am +++ b/utils/Makefile.am @@ -9,6 +9,7 @@ check_PROGRAMS = expect_dump expect_create expect_get expect_delete \ conntrack_master conntrack_filter \ conntrack_grp_create \ conntrack_dump_filter \ + conntrack_dump_filter_tuple \ ctexp_events conntrack_grp_create_SOURCES = conntrack_grp_create.c @@ -35,6 +36,9 @@ conntrack_dump_LDADD = ../src/libnetfilter_conntrack.la conntrack_dump_filter_SOURCES = conntrack_dump_filter.c conntrack_dump_filter_LDADD = ../src/libnetfilter_conntrack.la +conntrack_dump_filter_tuple_SOURCES = conntrack_dump_filter_tuple.c +conntrack_dump_filter_tuple_LDADD = ../src/libnetfilter_conntrack.la + conntrack_flush_SOURCES = conntrack_flush.c conntrack_flush_LDADD = ../src/libnetfilter_conntrack.la diff --git a/utils/conntrack_dump_filter_tuple.c b/utils/conntrack_dump_filter_tuple.c new file mode 100644 index 0000000..44633da --- /dev/null +++ b/utils/conntrack_dump_filter_tuple.c @@ -0,0 +1,70 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <arpa/inet.h> + +#include <libnetfilter_conntrack/libnetfilter_conntrack.h> + +static int cb(const struct nlmsghdr *nlh, + enum nf_conntrack_msg_type type, + struct nf_conntrack *ct, + void *data) +{ + char buf[1024]; + + if (!(nlh->nlmsg_flags & NLM_F_DUMP_FILTERED)) + { + fprintf(stderr, "No filtering in kernel, do filtering in userspace\n"); + return NFCT_CB_FAILURE; + } + + nfct_snprintf(buf, sizeof(buf), ct, NFCT_T_UNKNOWN, NFCT_O_DEFAULT, NFCT_OF_SHOW_LAYER3 | NFCT_OF_TIMESTAMP); + printf("%s\n", buf); + + return NFCT_CB_CONTINUE; +} + +int main(void) +{ + int ret; + struct nfct_handle *h; + + h = nfct_open(CONNTRACK, 0); + if (!h) { + perror("nfct_open"); + return -1; + } + struct nfct_filter_dump *filter_dump = nfct_filter_dump_create(); + if (filter_dump == NULL) { + perror("nfct_filter_dump_alloc"); + return -1; + } + + struct nf_conntrack *ct; + ct = nfct_new(); + if (!ct) { + perror("nfct_new"); + return 0; + } + + nfct_set_attr_u8(ct, ATTR_ORIG_L3PROTO, AF_INET); + nfct_set_attr_u8(ct, ATTR_L4PROTO, IPPROTO_ICMP); + nfct_set_attr_u32(ct, ATTR_ORIG_IPV4_DST, inet_addr("203.0.113.55")); + nfct_filter_dump_set_attr(filter_dump, NFCT_FILTER_DUMP_TUPLE, ct); + + nfct_callback_register2(h, NFCT_T_ALL, cb, NULL); + ret = nfct_query(h, NFCT_Q_DUMP_FILTER, filter_dump); + + nfct_filter_dump_destroy(filter_dump); + + printf("TEST: get conntrack "); + if (ret == -1) + printf("(%d)(%s)\n", ret, strerror(errno)); + else + printf("(OK)\n"); + + nfct_close(h); + + ret == -1 ? exit(EXIT_FAILURE) : exit(EXIT_SUCCESS); +} |