| Commit message (Collapse) | Author | Age | Files | Lines |
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Since the parser can now generate constant expressions of a specific type
not determinaed by the LHS, we need to check that relational expressions
are actually using the correct types to avoid accepting stupid things
like "tcp dport tcp".
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This fixes compilation with gcc-4.7
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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Add a table containing all available datatypes and registration/lookup functions.
This will be used to associate a stand-alone set in the kernel with the correct
type without parsing the entire ruleset.
Additionally it would now be possible to remove the global declarations for the
core types. Not done yet though.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The expression needs to be cloned so transformations don't corrupt the original
expression. This could be slightly optimized by only taking a reference and
COW'ing when necessary (which is actually quite rare).
Signed-off-by: Patrick McHardy <kaber@trash.net>
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User-defined constants can be used like this:
define allowed_hosts = { 192.168.0.0/24, 10.0.0.20-10.0.0.30 }
define udp_services = domain
define tcp_services = { ssh, domain }
ip saddr $allowed_hosts udp dport $udp_services counter accept
ip saddr $allowed_hosts tcp dport $tcp_services counter accept
Recursive definitions are possible, but currently not fully handled.
Anything requiring transformations (sets using ranges) can not be
used more than once currently since the expressions need to be COW'ed
previously.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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