From 14c32751713acad00c3ad01017e3464244ef709d Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sun, 15 Jan 2012 03:24:24 +0100 Subject: initial import Signed-off-by: Pablo Neira Ayuso --- examples/nfct-helper-get.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 examples/nfct-helper-get.c (limited to 'examples/nfct-helper-get.c') diff --git a/examples/nfct-helper-get.c b/examples/nfct-helper-get.c new file mode 100644 index 0000000..634062a --- /dev/null +++ b/examples/nfct-helper-get.c @@ -0,0 +1,81 @@ +/* This example is in the public domain. */ +#include +#include +#include +#include +#include + +static int nfct_helper_cb(const struct nlmsghdr *nlh, void *data) +{ + struct nfct_helper *nfct_helper; + char buf[4096]; + + nfct_helper = nfct_helper_alloc(); + if (nfct_helper == NULL) { + perror("OOM"); + goto err; + } + + if (nfct_helper_nlmsg_parse_payload(nlh, nfct_helper) < 0) { + perror("nfct_helper_parse_nl_msg"); + goto err_free; + } + + nfct_helper_snprintf(buf, sizeof(buf), nfct_helper, 0); + printf("%s\n", buf); + +err_free: + nfct_helper_free(nfct_helper); +err: + return MNL_CB_OK; +} + +int main(int argc, char *argv[]) +{ + struct mnl_socket *nl; + char buf[MNL_SOCKET_BUFFER_SIZE]; + struct nlmsghdr *nlh; + uint32_t portid, seq; + int ret, full = 1; + + if (argc != 1) { + fprintf(stderr, "Usage: %s\n", argv[0]); + exit(EXIT_FAILURE); + } + + seq = time(NULL); + nlh = nfct_helper_nlmsg_build_hdr(buf, NFNL_MSG_CTHELPER_GET, + NLM_F_DUMP, seq); + + 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); + + 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, nfct_helper_cb, &full); + if (ret <= 0) + break; + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); + } + if (ret == -1) { + perror("error"); + exit(EXIT_FAILURE); + } + mnl_socket_close(nl); + + return EXIT_SUCCESS; +} -- cgit v1.2.3