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/*
* (C) 2012-2016 by Pablo Neira Ayuso <pablo@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <stdio.h>
#include <stdint.h>
#include <arpa/inet.h>
#include <errno.h>
#include <inttypes.h>
#include <linux/netfilter/nf_tables.h>
#include "internal.h"
#include <libmnl/libmnl.h>
#include <libnftnl/object.h>
#include "obj.h"
static int nftnl_obj_secmark_set(struct nftnl_obj *e, uint16_t type,
const void *data, uint32_t data_len)
{
struct nftnl_obj_secmark *secmark = nftnl_obj_data(e);
switch (type) {
case NFTNL_OBJ_SECMARK_CTX:
snprintf(secmark->ctx, sizeof(secmark->ctx), "%s", (const char *)data);
break;
default:
return -1;
}
return 0;
}
static const void *nftnl_obj_secmark_get(const struct nftnl_obj *e,
uint16_t type, uint32_t *data_len)
{
struct nftnl_obj_secmark *secmark = nftnl_obj_data(e);
switch (type) {
case NFTNL_OBJ_SECMARK_CTX:
*data_len = strlen(secmark->ctx);
return secmark->ctx;
}
return NULL;
}
static int nftnl_obj_secmark_cb(const struct nlattr *attr, void *data)
{
const struct nftnl_obj_secmark *secmark = NULL;
int type = mnl_attr_get_type(attr);
const struct nlattr **tb = data;
if (mnl_attr_type_valid(attr, NFTA_SECMARK_MAX) < 0)
return MNL_CB_OK;
switch(type) {
case NFTA_SECMARK_CTX:
if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0)
abi_breakage();
if (mnl_attr_get_payload_len(attr) >= sizeof(secmark->ctx))
abi_breakage();
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static void
nftnl_obj_secmark_build(struct nlmsghdr *nlh, const struct nftnl_obj *e)
{
struct nftnl_obj_secmark *secmark = nftnl_obj_data(e);
if (e->flags & (1 << NFTNL_OBJ_SECMARK_CTX))
mnl_attr_put_str(nlh, NFTA_SECMARK_CTX, secmark->ctx);
}
static int
nftnl_obj_secmark_parse(struct nftnl_obj *e, struct nlattr *attr)
{
struct nftnl_obj_secmark *secmark = nftnl_obj_data(e);
struct nlattr *tb[NFTA_SECMARK_MAX + 1] = {};
if (mnl_attr_parse_nested(attr, nftnl_obj_secmark_cb, tb) < 0)
return -1;
if (tb[NFTA_SECMARK_CTX]) {
snprintf(secmark->ctx, sizeof(secmark->ctx), "%s",
mnl_attr_get_str(tb[NFTA_SECMARK_CTX]));
e->flags |= (1 << NFTNL_OBJ_SECMARK_CTX);
}
return 0;
}
static int
nftnl_obj_secmark_json_parse(struct nftnl_obj *e, json_t *root,
struct nftnl_parse_err *err)
{
errno = EOPNOTSUPP;
return -1;
}
static int nftnl_obj_secmark_export(char *buf, size_t size,
const struct nftnl_obj *e, int type)
{
struct nftnl_obj_secmark *secmark = nftnl_obj_data(e);
NFTNL_BUF_INIT(b, buf, size);
if (e->flags & (1 << NFTNL_OBJ_SECMARK_CTX))
nftnl_buf_str(&b, type, secmark->ctx, NAME);
return nftnl_buf_done(&b);
}
static int nftnl_obj_secmark_snprintf_default(char *buf, size_t len,
const struct nftnl_obj *e)
{
struct nftnl_obj_secmark *secmark = nftnl_obj_data(e);
return snprintf(buf, len, "context %s ", secmark->ctx);
}
static int nftnl_obj_secmark_snprintf(char *buf, size_t len, uint32_t type,
uint32_t flags,
const struct nftnl_obj *e)
{
if (len)
buf[0] = '\0';
switch (type) {
case NFTNL_OUTPUT_DEFAULT:
return nftnl_obj_secmark_snprintf_default(buf, len, e);
case NFTNL_OUTPUT_XML:
case NFTNL_OUTPUT_JSON:
return nftnl_obj_secmark_export(buf, len, e, type);
default:
break;
}
return -1;
}
struct obj_ops obj_ops_secmark = {
.name = "secmark",
.type = NFT_OBJECT_SECMARK,
.alloc_len = sizeof(struct nftnl_obj_secmark),
.max_attr = NFTA_SECMARK_MAX,
.set = nftnl_obj_secmark_set,
.get = nftnl_obj_secmark_get,
.parse = nftnl_obj_secmark_parse,
.build = nftnl_obj_secmark_build,
.snprintf = nftnl_obj_secmark_snprintf,
.json_parse = nftnl_obj_secmark_json_parse,
};
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