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In legacy iptables, only the last plus sign remains special, any
previous ones are taken literally. Therefore xtables-translate must not
replace all of them with asterisk but just the last one.
Fixes: e179e87a1179e ("xtables-translate: Fix for interface name corner-cases")
Signed-off-by: Phil Sutter <phil@nwl.cc>
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There are two special situations xlate_ifname() didn't cover for:
* Interface name containing '*': This went unchanged, creating a command
nft wouldn't accept. Instead translate into '\*' which doesn't change
semantics.
* Interface name being '+': Can't translate into nft wildcard character
as nft doesn't accept asterisk-only interface names. Instead decide
what to do based on 'invert' value: Skip match creation if false,
match against an invalid interface name if true.
Also add a test to make sure future changes to this behaviour are
noticed.
Signed-off-by: Phil Sutter <phil@nwl.cc>
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This uncovered broken translation of ethernet + mask.
Signed-off-by: Florian Westphal <fw@strlen.de>
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This test suite is intended to detect regressions in the translation
infrastructure. The script checks if ip[6]tables-translate produces the
expected output, otherwise it prints the wrong translation and the
expected one.
** Arguments
--all # Show also passed tests
[test] # Run only the specified test file
** Test files structure
Test files are located under extensions directory. Every file contains
tests about specific extension translations. A test file name must end
with ".txlate".
Inside the files, every single test is defined by two consecutive lines:
ip[6]tables-translate command and expected result. One blank line is left
between tests by convention.
e.g.
$ cat extensions/libxt_cpu.txlate
iptables-translate -A INPUT -p tcp --dport 80 -m cpu --cpu 0 -j ACCEPT
nft add rule ip filter INPUT tcp dport 80 cpu 0 counter accept
iptables-translate -A INPUT -p tcp --dport 80 -m cpu ! --cpu 1 -j ACCEPT
nft add rule ip filter INPUT tcp dport 80 cpu != 1 counter accept
Signed-off-by: Pablo M. Bermudo Garay <pablombg@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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