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* libxtables: Introduce xtables_strdup() and use it everywherePhil Sutter2021-06-071-1/+2
| | | | | | This wraps strdup(), checking for errors. Signed-off-by: Phil Sutter <phil@nwl.cc>
* libxtables: Extend MAC address printing/parsing supportPhil Sutter2020-12-031-54/+6
| | | | | | | | | | | | | | | Adding a parser which supports common names for special MAC/mask combinations and a print routine detecting those special addresses and printing the respective name allows to consolidate all the various duplicated implementations. The side-effects of this change are manageable: * arptables now accepts "BGA" as alias for the bridge group address * "mac" match now prints MAC addresses in lower-case which is consistent with the remaining code at least Signed-off-by: Phil Sutter <phil@nwl.cc>
* Revert "ebtables: use extrapositioned negation consistently"Phil Sutter2019-02-051-3/+2
| | | | | | | | | | | | | | | | | | | | | | | This reverts commit 5f508b76a0cebaf91965ffa678089222e2d47964. While attempts at unifying syntax between arp-, eb- and iptables-nft increase the opportunity for more code-sharing, they are problematic when it comes to compatibility. Accepting the old syntax on input helps, but due to the fact that neither arptables nor ebtables support --check command we must expect for users to test existence of a rule by comparing input with output. If that happens in a script, deviating from the old syntax in output has a high chance of breaking it. Therefore revert Florian's patch changing inversion character position in output and review the old code for consistency - the only thing changed on top of the actual revert is ebtables' own copy of print_iface() to make it adhere to the intrapositioned negation scheme used throughout ebtables. Added extension tests by the reverted commit have been kept. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Florian Westphal <fw@strlen.de>
* ebtables: use extrapositioned negation consistentlyFlorian Westphal2018-11-121-2/+3
| | | | | | | | | | | | | | in the iptables universe, we enforce extrapositioned negation: ! -i foo "-i ! foo" is not even supported anymore. At least make sure that ebtables prints the former syntax everywhere as well so we don't have a mix of both ways. Parsing of --option ! 42 will still work for backwards compat reasons. Signed-off-by: Florian Westphal <fw@strlen.de>
* libxtables: add and use mac print helpersFlorian Westphal2018-11-071-27/+2
| | | | | | | | | | | | This changes ebtables-nft to consistently print mac address with two characters, i.e. 00:01:02:03:04:0a, not 0:1:2:3:4:a. Will require another bump of vcurrent/vage. Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de>
* ebtables-nft: add stp matchFlorian Westphal2018-07-021-0/+391
Unfortunately no nft translation available so far. Signed-off-by: Florian Westphal <fw@strlen.de>