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Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Felix Janda <felix.janda@posteo.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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nfct_snprintf doesn't print connlabels, as they're system specific
and can easily generate lots of output.
This adds a new helper function, nfct_snprintf_labels. It behaves like
nfct_snprintf, except that the label names in the labelmap whose bits are
contained in connlabel attribute bitset are added to the buffer.
output looks like this:
output looks like this:
... mark=0 use=1 labels=eth0-in,eth1-in
or
<labels>
<label>eth0-in</label>
<label>eth1-in</label>
</labels>
Signed-off-by: Florian Westphal <fw@strlen.de>
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adds new labelmap api to create a name <-> bit mapping
from a text file (default: /etc/xtables/connlabel.conf).
nfct_labelmap_new(filename) is used to create the map,
nfct_labelmap_destroy() releases the resources allocated for the map.
Two functions are added to make map lookups:
nfct_labelmap_get_name(map, bit) returns the name of a bit,
nfct_labelmap_get_bit returns the bit associated with a name.
The connlabel attribute is represented by a nfct_bitmask object, the
nfct_bitmask api can be used to test/set/get individual bits
("labels").
The exisiting nfct_attr_get/set interfaces can be used to read or
replace the existing labels associated with a conntrack with a new set.
Signed-off-by: Florian Westphal <fw@strlen.de>
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This patch adds support to build and to parse netlink messages
from/to one user-space nf_conntrack object. It uses libmnl, thus
libnetfilter_conntrack now depends on this library.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds the infrastructure to allow filtered dumping.
See utils/conntrack_dump_filter.c for instance.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Example of the XML output:
<flow type="new">
<layer3 protonum="2" protoname="IPv4">
<expected>
<src>192.168.0.2</src>
<dst>192.168.1.2</dst>
</expected>
<mask>
<src>255.255.255.255</src>
<dst>255.255.255.255</dst>
</mask>
<master>
<src>192.168.0.2</src>
<dst>192.168.1.2</dst>
</master>
</layer3>
<layer4 protonum="6" protoname="tcp">
<expected>
<sport>0</sport>
<dport>41739</dport>
</expected>
<mask>
<sport>0</sport>
<dport>65535</dport>
</mask>
<master>
<sport>36390</sport>
<dport>21</dport>
</master>
</layer4>
<meta>
<helper-name>ftp</helper-name>
<timeout>300</timeout>
<zone>0</zone>
</meta>
</flow>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds nfexp_cmp that allows you to compare two expectation
objects.
This includes the extension of test_api for this new function.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds mask and master tuple information regarding one
expectation. This information has been not shown so far. I consider
that it is interesting because you can use this information to
troubleshoot expectation issues. Moreover, you can know which is
the master conntrack that this expectation is attached to.
This extends the text-based output for `conntrack -L exp'. This
can be considered a backward compatibily issue since existing
tools that are parsing this interface may break. But this is not
our fault, we provide an API to the conntrack table via
libnetfilter_conntrack. People should use those.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Thus, we have a fast version of nfct_copy() which allows to
copy the destination to the origin. After this call, the
destination is a clone of the origin.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This warning has been there for quite some time, fix it by relaxing the
const type checking.
callback.c: In function `__expect_callback':
callback.c:30: warning: passing argument 2 of `__parse_expect' from incompatible pointer type
../../include/internal/prototypes.h:32: note: expected `const struct nfattr **' but argument is of type `struct nfattr **'
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch cleanups the internal headers by splitting them into several
logical pieces.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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