--- /dev/null
+/*
+ * (C) 2017 Red Hat GmbH
+ * Author: Florian Westphal <fw@strlen.de>
+ *
+ * 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_ct_helper_set(struct nftnl_obj *e, uint16_t type,
+ const void *data, uint32_t data_len)
+{
+ struct nftnl_obj_ct_helper *helper = nftnl_obj_data(e);
+
+ switch (type) {
+ case NFTNL_OBJ_CT_HELPER_NAME:
+ snprintf(helper->name, sizeof(helper->name), "%s", (const char *)data);
+ break;
+ case NFTNL_OBJ_CT_HELPER_L3PROTO:
+ helper->l3proto = *((uint16_t *)data);
+ break;
+ case NFTNL_OBJ_CT_HELPER_L4PROTO:
+ helper->l4proto = *((uint8_t *)data);
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+static const void *nftnl_obj_ct_helper_get(const struct nftnl_obj *e,
+ uint16_t type, uint32_t *data_len)
+{
+ struct nftnl_obj_ct_helper *helper = nftnl_obj_data(e);
+
+ switch (type) {
+ case NFTNL_OBJ_CT_HELPER_NAME:
+ *data_len = strlen(helper->name);
+ return helper->name;
+ case NFTNL_OBJ_CT_HELPER_L3PROTO:
+ *data_len = sizeof(helper->l3proto);
+ return &helper->l3proto;
+ case NFTNL_OBJ_CT_HELPER_L4PROTO:
+ *data_len = sizeof(helper->l4proto);
+ return &helper->l4proto;
+ }
+ return NULL;
+}
+
+static int nftnl_obj_ct_helper_cb(const struct nlattr *attr, void *data)
+{
+ const struct nftnl_obj_ct_helper *helper = NULL;
+ int type = mnl_attr_get_type(attr);
+ const struct nlattr **tb = data;
+
+ if (mnl_attr_type_valid(attr, NFTA_CT_HELPER_MAX) < 0)
+ return MNL_CB_OK;
+
+ switch (type) {
+ case NFTA_CT_HELPER_NAME:
+ if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0)
+ abi_breakage();
+ if (mnl_attr_get_payload_len(attr) >= sizeof(helper->name))
+ abi_breakage();
+ break;
+ case NFTA_CT_HELPER_L3PROTO:
+ if (mnl_attr_validate(attr, MNL_TYPE_U16) < 0)
+ abi_breakage();
+ break;
+ case NFTA_CT_HELPER_L4PROTO:
+ if (mnl_attr_validate(attr, MNL_TYPE_U8) < 0)
+ abi_breakage();
+ break;
+ }
+
+ tb[type] = attr;
+ return MNL_CB_OK;
+}
+
+static void
+nftnl_obj_ct_helper_build(struct nlmsghdr *nlh, const struct nftnl_obj *e)
+{
+ struct nftnl_obj_ct_helper *helper = nftnl_obj_data(e);
+
+ if (e->flags & (1 << NFTNL_OBJ_CT_HELPER_NAME))
+ mnl_attr_put_str(nlh, NFTA_CT_HELPER_NAME, helper->name);
+ if (e->flags & (1 << NFTNL_OBJ_CT_HELPER_L3PROTO))
+ mnl_attr_put_u16(nlh, NFTA_CT_HELPER_L3PROTO, htons(helper->l3proto));
+ if (e->flags & (1 << NFTNL_OBJ_CT_HELPER_L4PROTO))
+ mnl_attr_put_u8(nlh, NFTA_CT_HELPER_L4PROTO, helper->l4proto);
+}
+
+static int
+nftnl_obj_ct_helper_parse(struct nftnl_obj *e, struct nlattr *attr)
+{
+ struct nftnl_obj_ct_helper *helper = nftnl_obj_data(e);
+ struct nlattr *tb[NFTA_CT_HELPER_MAX + 1] = {};
+
+ if (mnl_attr_parse_nested(attr, nftnl_obj_ct_helper_cb, tb) < 0)
+ return -1;
+
+ if (tb[NFTA_CT_HELPER_NAME]) {
+ snprintf(helper->name, sizeof(helper->name), "%s",
+ mnl_attr_get_str(tb[NFTA_CT_HELPER_NAME]));
+ e->flags |= (1 << NFTNL_OBJ_CT_HELPER_NAME);
+ }
+ if (tb[NFTA_CT_HELPER_L3PROTO]) {
+ helper->l3proto = ntohs(mnl_attr_get_u16(tb[NFTA_CT_HELPER_L3PROTO]));
+ e->flags |= (1 << NFTNL_OBJ_CT_HELPER_L3PROTO);
+ }
+ if (tb[NFTA_CT_HELPER_L4PROTO]) {
+ helper->l4proto = mnl_attr_get_u8(tb[NFTA_CT_HELPER_L4PROTO]);
+ e->flags |= (1 << NFTNL_OBJ_CT_HELPER_L4PROTO);
+ }
+
+ return 0;
+}
+
+static int
+nftnl_obj_quota_json_parse(struct nftnl_obj *e, json_t *root,
+ struct nftnl_parse_err *err)
+{
+#ifdef JSON_PARSING
+ uint64_t bytes;
+ uint32_t flags;
+
+ if (nftnl_jansson_parse_val(root, "bytes", NFTNL_TYPE_U64, &bytes,
+ err) == 0)
+ nftnl_obj_set_u64(e, NFTNL_OBJ_QUOTA_BYTES, bytes);
+ if (nftnl_jansson_parse_val(root, "consumed", NFTNL_TYPE_U64, &bytes,
+ err) == 0)
+ nftnl_obj_set_u64(e, NFTNL_OBJ_QUOTA_CONSUMED, bytes);
+ if (nftnl_jansson_parse_val(root, "flags", NFTNL_TYPE_U32, &flags,
+ err) == 0)
+ nftnl_obj_set_u32(e, NFTNL_OBJ_QUOTA_FLAGS, flags);
+
+ return 0;
+#else
+ errno = EOPNOTSUPP;
+ return -1;
+#endif
+}
+
+static int nftnl_obj_ct_helper_export(char *buf, size_t size,
+ const struct nftnl_obj *e, int type)
+{
+ struct nftnl_obj_ct_helper *helper = nftnl_obj_data(e);
+ NFTNL_BUF_INIT(b, buf, size);
+
+ if (e->flags & (1 << NFTNL_OBJ_CT_HELPER_NAME))
+ nftnl_buf_str(&b, type, helper->name, NAME);
+ if (e->flags & (1 << NFTNL_OBJ_CT_HELPER_L3PROTO))
+ nftnl_buf_u32(&b, type, helper->l3proto, FAMILY);
+ if (e->flags & (1 << NFTNL_OBJ_CT_HELPER_L4PROTO))
+ nftnl_buf_u32(&b, type, helper->l4proto, "service");
+
+ return nftnl_buf_done(&b);
+}
+
+static int nftnl_obj_ct_helper_snprintf_default(char *buf, size_t len,
+ const struct nftnl_obj *e)
+{
+ struct nftnl_obj_ct_helper *helper = nftnl_obj_data(e);
+
+ return snprintf(buf, len, "name %s family %d protocol %d ",
+ helper->name, helper->l3proto, helper->l4proto);
+}
+
+static int nftnl_obj_ct_helper_snprintf(char *buf, size_t len, uint32_t type,
+ uint32_t flags,
+ const struct nftnl_obj *e)
+{
+ switch (type) {
+ case NFTNL_OUTPUT_DEFAULT:
+ return nftnl_obj_ct_helper_snprintf_default(buf, len, e);
+ case NFTNL_OUTPUT_JSON:
+ return nftnl_obj_ct_helper_export(buf, len, e, type);
+ default:
+ break;
+ }
+ return -1;
+}
+
+struct obj_ops obj_ops_ct_helper = {
+ .name = "ct_helper",
+ .type = NFT_OBJECT_CT_HELPER,
+ .alloc_len = sizeof(struct nftnl_obj_ct_helper),
+ .max_attr = NFTA_CT_HELPER_MAX,
+ .set = nftnl_obj_ct_helper_set,
+ .get = nftnl_obj_ct_helper_get,
+ .parse = nftnl_obj_ct_helper_parse,
+ .build = nftnl_obj_ct_helper_build,
+ .snprintf = nftnl_obj_ct_helper_snprintf,
+ .json_parse = nftnl_obj_quota_json_parse,
+};
projects / thirdparty / libnftnl.git / commitdiff
