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* src: remove nftnl_rule_cmp() and nftnl_expr_cmp()Pablo Neira Ayuso2018-10-241-22/+0
| | | | | | | | | | | | | | These functions are not very useful, rule comparison from this layer does not work well with implicit set definitions. This infrastructure was added as an attempt to support for deletion by name from this layer, which should be done from higher level libnftables library. Finally, we never had a client for this code in git.netfilter.org. Let's remove it and bump libversion for safety reasons. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: Use memcpy() to handle potentially unaligned dataMatt Turner2018-10-191-3/+3
| | | | | | | | | | | | Rolf Eike Beer <eike@sf-mail.de> reported that nft-expr_quota-test fails with a SIGBUS on SPARC due to unaligned accesses. This patch resolves that and fixes additional sources of unaligned accesses matching the same pattern. Both nft-expr_quota-test and nft-expr_objref-test generated unaligned accesses on DEC Alpha. Bug: https://bugs.gentoo.org/666448 Signed-off-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: remove json supportPablo Neira Ayuso2018-10-151-47/+0
| | | | | | We have better json support in libnftables these days. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: objref: do not print idPablo Neira Ayuso2018-04-111-2/+2
| | | | | | | The lookup expression does not do this either, so let's be consistent and remove it. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: no need to nul-terminate buffer from expression ->snprintf indirectionPablo Neira Ayuso2017-10-041-3/+0
| | | | | | | ->snprintf() is always called via nftnl_expr_snprintf() wrapper, which is already dealing with this corner case for us. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: Buffer is null terminated.Varsha Rao2017-09-271-0/+3
| | | | | | | In _snprintf() functions definition the buffer is null terminated. Signed-off-by: Varsha Rao <rvarsha016@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: objref: add support for stateful object mapsPablo Neira Ayuso2016-12-091-2/+70
| | | | | | | | If the NFT_SET_OBJECT flag is set, then this set stores a mapping between any random user-defined arbitrary key and one stateful object. Very useful for performance lookups. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* expr: add stateful object reference expressionPablo Neira Ayuso2016-12-091-0/+215
This patch adds a new "objref" expression that you can use to refer to stateful objects from rules. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>