diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Makefile.am | 1 | ||||
| -rw-r--r-- | src/obj/secmark.c | 159 | ||||
| -rw-r--r-- | src/object.c | 1 |
3 files changed, 161 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am index 05dbeaa..90704e6 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -66,4 +66,5 @@ libnftnl_la_SOURCES = utils.c \ obj/tunnel.c \ obj/limit.c \ obj/ct_timeout.c \ + obj/secmark.c \ libnftnl.map diff --git a/src/obj/secmark.c b/src/obj/secmark.c new file mode 100644 index 0000000..f68cb3e --- /dev/null +++ b/src/obj/secmark.c @@ -0,0 +1,159 @@ +/* + * (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, +}; diff --git a/src/object.c b/src/object.c index 434f999..f62395d 100644 --- a/src/object.c +++ b/src/object.c @@ -32,6 +32,7 @@ static struct obj_ops *obj_ops[] = { [NFT_OBJECT_LIMIT] = &obj_ops_limit, [NFT_OBJECT_TUNNEL] = &obj_ops_tunnel, [NFT_OBJECT_CT_TIMEOUT] = &obj_ops_ct_timeout, + [NFT_OBJECT_SECMARK] = &obj_ops_secmark, }; static struct obj_ops *nftnl_obj_ops_lookup(uint32_t type) |