diff options
Diffstat (limited to 'src/expr/byteorder.c')
| -rw-r--r-- | src/expr/byteorder.c | 65 |
1 files changed, 21 insertions, 44 deletions
diff --git a/src/expr/byteorder.c b/src/expr/byteorder.c index efdfa2b..baa11a1 100644 --- a/src/expr/byteorder.c +++ b/src/expr/byteorder.c @@ -1,11 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * (C) 2012-2013 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. - * * This code has been sponsored by Sophos Astaro <http://www.sophos.com> */ @@ -31,28 +27,26 @@ struct nftnl_expr_byteorder { static int nftnl_expr_byteorder_set(struct nftnl_expr *e, uint16_t type, - const void *data, uint32_t data_len) + const void *data, uint32_t data_len, uint32_t byteorderp) { struct nftnl_expr_byteorder *byteorder = nftnl_expr_data(e); switch(type) { case NFTNL_EXPR_BYTEORDER_SREG: - memcpy(&byteorder->sreg, data, sizeof(byteorder->sreg)); + memcpy(&byteorder->sreg, data, data_len); break; case NFTNL_EXPR_BYTEORDER_DREG: - memcpy(&byteorder->dreg, data, sizeof(byteorder->dreg)); + memcpy(&byteorder->dreg, data, data_len); break; case NFTNL_EXPR_BYTEORDER_OP: - memcpy(&byteorder->op, data, sizeof(byteorder->op)); + memcpy(&byteorder->op, data, data_len); break; case NFTNL_EXPR_BYTEORDER_LEN: - memcpy(&byteorder->len, data, sizeof(byteorder->len)); + memcpy(&byteorder->len, data, data_len); break; case NFTNL_EXPR_BYTEORDER_SIZE: - memcpy(&byteorder->size, data, sizeof(byteorder->size)); + memcpy(&byteorder->size, data, data_len); break; - default: - return -1; } return 0; } @@ -185,23 +179,12 @@ static const char *bo2str(uint32_t type) return expr_byteorder_str[type]; } -static inline int nftnl_str2ntoh(const char *op) -{ - if (strcmp(op, "ntoh") == 0) - return NFT_BYTEORDER_NTOH; - else if (strcmp(op, "hton") == 0) - return NFT_BYTEORDER_HTON; - else { - errno = EINVAL; - return -1; - } -} - -static int nftnl_expr_byteorder_snprintf_default(char *buf, size_t size, - const struct nftnl_expr *e) +static int +nftnl_expr_byteorder_snprintf(char *buf, size_t remain, + uint32_t flags, const struct nftnl_expr *e) { struct nftnl_expr_byteorder *byteorder = nftnl_expr_data(e); - int remain = size, offset = 0, ret; + int offset = 0, ret; ret = snprintf(buf, remain, "reg %u = %s(reg %u, %u, %u) ", byteorder->dreg, bo2str(byteorder->op), @@ -211,28 +194,22 @@ static int nftnl_expr_byteorder_snprintf_default(char *buf, size_t size, return offset; } -static int -nftnl_expr_byteorder_snprintf(char *buf, size_t size, uint32_t type, - uint32_t flags, const struct nftnl_expr *e) -{ - switch (type) { - case NFTNL_OUTPUT_DEFAULT: - return nftnl_expr_byteorder_snprintf_default(buf, size, e); - case NFTNL_OUTPUT_XML: - case NFTNL_OUTPUT_JSON: - default: - break; - } - return -1; -} +static struct attr_policy byteorder_attr_policy[__NFTNL_EXPR_BYTEORDER_MAX] = { + [NFTNL_EXPR_BYTEORDER_DREG] = { .maxlen = sizeof(uint32_t) }, + [NFTNL_EXPR_BYTEORDER_SREG] = { .maxlen = sizeof(uint32_t) }, + [NFTNL_EXPR_BYTEORDER_OP] = { .maxlen = sizeof(uint32_t) }, + [NFTNL_EXPR_BYTEORDER_LEN] = { .maxlen = sizeof(uint32_t) }, + [NFTNL_EXPR_BYTEORDER_SIZE] = { .maxlen = sizeof(uint32_t) }, +}; struct expr_ops expr_ops_byteorder = { .name = "byteorder", .alloc_len = sizeof(struct nftnl_expr_byteorder), - .max_attr = NFTA_BYTEORDER_MAX, + .nftnl_max_attr = __NFTNL_EXPR_BYTEORDER_MAX - 1, + .attr_policy = byteorder_attr_policy, .set = nftnl_expr_byteorder_set, .get = nftnl_expr_byteorder_get, .parse = nftnl_expr_byteorder_parse, .build = nftnl_expr_byteorder_build, - .snprintf = nftnl_expr_byteorder_snprintf, + .output = nftnl_expr_byteorder_snprintf, }; |