From 3388d7df304f26617c4487418c05734ae4fce5b8 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Wed, 28 Dec 2011 20:16:46 +0100 Subject: src: major API redesign This patch reworks the initial API. Now it provides functions to: - allocate/release accounting objects. - set/unset/get attributes of accounting objects. - build one netlink message from one accounting object. - parse one netlink message to one accounting object. - print one accounting object into a buffer. Binary layout of nfacct objects are opaque. This is good for extensibility without breaking backward compatibility. Signed-off-by: Pablo Neira Ayuso --- examples/nfacct-get.c | 34 +++++++++++++++++++++++++++++++--- 1 file changed, 31 insertions(+), 3 deletions(-) (limited to 'examples/nfacct-get.c') diff --git a/examples/nfacct-get.c b/examples/nfacct-get.c index 7b22352..fffa3ec 100644 --- a/examples/nfacct-get.c +++ b/examples/nfacct-get.c @@ -4,6 +4,31 @@ #include #include +static int nfacct_cb(const struct nlmsghdr *nlh, void *data) +{ + struct nfacct *nfacct; + char buf[4096]; + + nfacct = nfacct_alloc(); + if (nfacct == NULL) { + perror("OOM"); + goto err; + } + + if (nfacct_nlmsg_parse_payload(nlh, nfacct) < 0) { + 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; +} + int main(int argc, char *argv[]) { struct mnl_socket *nl; @@ -21,8 +46,11 @@ int main(int argc, char *argv[]) if (argc == 2 && strncmp(argv[1], "-z", strlen("-z")) == 0) zeroctr = true; - nlh = nfacct_list(buf, zeroctr); - seq = nlh->nlmsg_seq = time(NULL); + 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) { @@ -43,7 +71,7 @@ int main(int argc, char *argv[]) ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); while (ret > 0) { - ret = mnl_cb_run(buf, ret, seq, portid, nfacct_list_cb, &full); + ret = mnl_cb_run(buf, ret, seq, portid, nfacct_cb, &full); if (ret <= 0) break; ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); -- cgit v1.2.3