examples: put examples files into specific directories

put examples files into specific directories according to the
Netlink bus they work with. And minor update in the readme file

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 0 insertions, 252 deletions

diff --git a/examples/nf-queue.c b/examples/nf-queue.c
deleted file mode 100644
index 1df004a..0000000
--- a/examples/nf-queue.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * (C) 2010 by Pablo Neira Ayuso <pablo@netfilter.org>
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <time.h>
-#include <arpa/inet.h>
-
-#include <libmnl/libmnl.h>
-#include <linux/netfilter.h>
-#include <linux/netfilter/nfnetlink.h>
-
-#ifndef aligned_be64
-#define aligned_be64 u_int64_t __attribute__((aligned(8)))
-#endif
-
-#include <linux/netfilter/nfnetlink_queue.h>
-
-static int parse_attr_cb(const struct nlattr *attr, void *data)
-{
-        const struct nlattr **tb = (const struct nlattr **)data;
-	int type = mnl_attr_get_type(attr);
-
-	/* skip unsupported attribute in user-space */
-	if (mnl_attr_type_valid(attr, NFQA_MAX) < 0)
-		return MNL_CB_OK;
-
-	switch(type) {
-	case NFQA_MARK:
-	case NFQA_IFINDEX_INDEV:
-	case NFQA_IFINDEX_OUTDEV:
-	case NFQA_IFINDEX_PHYSINDEV:
-	case NFQA_IFINDEX_PHYSOUTDEV:
-		if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
-			perror("mnl_attr_validate");
-			return MNL_CB_ERROR;
-		}
-		break;
-	case NFQA_TIMESTAMP:
-		if (mnl_attr_validate2(attr, MNL_TYPE_UNSPEC,
-		    sizeof(struct nfqnl_msg_packet_timestamp)) < 0) {
-			perror("mnl_attr_validate");
-			return MNL_CB_ERROR;
-		}
-		break;
-	case NFQA_HWADDR:
-		if (mnl_attr_validate2(attr, MNL_TYPE_UNSPEC,
-		    sizeof(struct nfqnl_msg_packet_hw)) < 0) {
-			perror("mnl_attr_validate");
-			return MNL_CB_ERROR;
-		}
-		break;
-	case NFQA_PAYLOAD:
-		break;
-	}
-	tb[type] = attr;
-	return MNL_CB_OK;
-}
-
-static int queue_cb(const struct nlmsghdr *nlh, void *data)
-{
-	struct nlattr *tb[NFQA_MAX+1] = {};
-	struct nfqnl_msg_packet_hdr *ph = NULL;
-	uint32_t id = 0;
-
-	mnl_attr_parse(nlh, sizeof(struct nfgenmsg), parse_attr_cb, tb);
-	if (tb[NFQA_PACKET_HDR]) {
-		ph = mnl_attr_get_payload(tb[NFQA_PACKET_HDR]);
-		id = ntohl(ph->packet_id);
-	}
-	printf("packet received (id=%u hw=0x%04x hook=%u)\n",
-		id, ntohs(ph->hw_protocol), ph->hook);
-
-	return MNL_CB_OK + id;
-}
-
-static struct nlmsghdr *
-nfq_build_cfg_pf_request(char *buf, uint8_t command)
-{
-	struct nlmsghdr *nlh = mnl_nlmsg_put_header(buf);
-	nlh->nlmsg_type	= (NFNL_SUBSYS_QUEUE << 8) | NFQNL_MSG_CONFIG;
-	nlh->nlmsg_flags = NLM_F_REQUEST;
-
-	struct nfgenmsg *nfg = mnl_nlmsg_put_extra_header(nlh, sizeof(*nfg));
-	nfg->nfgen_family = AF_UNSPEC;
-	nfg->version = NFNETLINK_V0;
-
-	struct nfqnl_msg_config_cmd cmd = {
-		.command = command,
-		.pf = htons(AF_INET),
-	};
-	mnl_attr_put(nlh, NFQA_CFG_CMD, sizeof(cmd), &cmd);
-
-	return nlh;
-}
-
-static struct nlmsghdr *
-nfq_build_cfg_request(char *buf, uint8_t command, int queue_num)
-{
-	struct nlmsghdr *nlh = mnl_nlmsg_put_header(buf);
-	nlh->nlmsg_type	= (NFNL_SUBSYS_QUEUE << 8) | NFQNL_MSG_CONFIG;
-	nlh->nlmsg_flags = NLM_F_REQUEST;
-
-	struct nfgenmsg *nfg = mnl_nlmsg_put_extra_header(nlh, sizeof(*nfg));
-	nfg->nfgen_family = AF_UNSPEC;
-	nfg->version = NFNETLINK_V0;
-	nfg->res_id = htons(queue_num);
-
-	struct nfqnl_msg_config_cmd cmd = {
-		.command = command,
-		.pf = htons(AF_INET),
-	};
-	mnl_attr_put(nlh, NFQA_CFG_CMD, sizeof(cmd), &cmd);
-
-	return nlh;
-}
-
-static struct nlmsghdr *
-nfq_build_cfg_params(char *buf, uint8_t mode, int range, int queue_num)
-{
-	struct nlmsghdr *nlh = mnl_nlmsg_put_header(buf);
-	nlh->nlmsg_type	= (NFNL_SUBSYS_QUEUE << 8) | NFQNL_MSG_CONFIG;
-	nlh->nlmsg_flags = NLM_F_REQUEST;
-
-	struct nfgenmsg *nfg = mnl_nlmsg_put_extra_header(nlh, sizeof(*nfg));
-	nfg->nfgen_family = AF_UNSPEC;
-	nfg->version = NFNETLINK_V0;
-	nfg->res_id = htons(queue_num);
-
-	struct nfqnl_msg_config_params params = {
-		.copy_range = htonl(range),
-		.copy_mode = mode,
-	};
-	mnl_attr_put(nlh, NFQA_CFG_PARAMS, sizeof(params), &params);
-
-	return nlh;
-}
-
-static struct nlmsghdr *
-nfq_build_verdict(char *buf, int id, int queue_num, int verd)
-{
-	struct nlmsghdr *nlh;
-	struct nfgenmsg *nfg;
-
-	nlh = mnl_nlmsg_put_header(buf);
-	nlh->nlmsg_type = (NFNL_SUBSYS_QUEUE << 8) | NFQNL_MSG_VERDICT;
-	nlh->nlmsg_flags = NLM_F_REQUEST;
-	nfg = mnl_nlmsg_put_extra_header(nlh, sizeof(*nfg));
-	nfg->nfgen_family = AF_UNSPEC;
-	nfg->version = NFNETLINK_V0;
-	nfg->res_id = htons(queue_num);
-
-	struct nfqnl_msg_verdict_hdr vh = {
-		.verdict = htonl(verd),
-		.id = htonl(id),
-	};
-	mnl_attr_put(nlh, NFQA_VERDICT_HDR, sizeof(vh), &vh);
-
-	return nlh;
-}
-
-int main(int argc, char *argv[])
-{
-	struct mnl_socket *nl;
-	char buf[getpagesize()];
-	struct nlmsghdr *nlh;
-	int ret;
-	unsigned int portid, queue_num;
-
-	if (argc != 2) {
-		printf("Usage: %s [queue_num]\n", argv[0]);
-		exit(EXIT_FAILURE);
-	}
-	queue_num = 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);
-
-	nlh = nfq_build_cfg_pf_request(buf, NFQNL_CFG_CMD_PF_UNBIND);
-
-	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
-		perror("mnl_socket_send");
-		exit(EXIT_FAILURE);
-	}
-
-	nlh = nfq_build_cfg_pf_request(buf, NFQNL_CFG_CMD_PF_BIND);
-
-	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
-		perror("mnl_socket_send");
-		exit(EXIT_FAILURE);
-	}
-
-	nlh = nfq_build_cfg_request(buf, NFQNL_CFG_CMD_BIND, queue_num);
-
-	if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
-		perror("mnl_socket_send");
-		exit(EXIT_FAILURE);
-	}
-
-	nlh = nfq_build_cfg_params(buf, NFQNL_COPY_PACKET, 0xFFFF, queue_num);
-
-	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));
-	if (ret == -1) {
-		perror("mnl_socket_recvfrom");
-		exit(EXIT_FAILURE);
-	}
-	while (ret > 0) {
-		uint32_t id;
-
-		ret = mnl_cb_run(buf, ret, 0, portid, queue_cb, NULL);
-		if (ret < 0){
-			perror("mnl_cb_run");
-			exit(EXIT_FAILURE);
-		}
-
-		id = ret - MNL_CB_OK;
-		nlh = nfq_build_verdict(buf, id, queue_num, NF_ACCEPT);
-		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));
-		if (ret == -1) {
-			perror("mnl_socket_recvfrom");
-			exit(EXIT_FAILURE);
-		}
-	}
-
-	mnl_socket_close(nl);
-
-	return 0;
-}