| Commit message (Collapse) | Author | Age | Files | Lines |
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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This fixes a minor problem introduced in b245e4092c5a7f09729e64868a42e13f48a
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch uses CTA_PROTOINFO_DCCP_HANDSHAKE_SEQ instead which is the
name that is used in the Linux kernel header. Thus, both the headers
and the internal copy for the library are in sync.
This problem was probably introduced at the time that we added support
for the DCCP handshake sequence number.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch exports several low-level function that allow to build
and parse netlink messages that contain ctnetlink expectation
information. They have been in the tree for quite so long, but
they were not exported. To leave the library in a consistent state
(ctnetlink conntrack functions provide the similar functionality)
I have decided to export them.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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With this patch, the expect_events example also listens to other
sort of expectation events that were added in Linux kernel 2.6.37-rc.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch re-works the callback handling to allow the use the same socket
to send/receive commands and listen to events of both conntrack and
expectation subsystems. Now you can register one callback for conntrack
and one for expectation with the same handler with no problems (before
this patch, this was not possible, you required two different handlers).
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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This patch updates the README file and it includes the re-licensing
of this library to make it GPLv2+.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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PKG_CHECK_MODULES already produces its own (and more verbose) messsage
when a module cannot be found.
Mucking around with CFLAGS and LIBS is also not needed since pkgconfig
takes care of providing variables, so let's use them in Makefile.am.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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libtool automatically adds PIC flags as needed.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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sh -e (-x) will provide the same functionality as the run function
previously.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Similar to the commit in iptables, add Libs.private to tell about
dependencies for static linking.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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This patch adds some missing attribute checkings in the XML
output that may result in inconsistent output (thus, displaying
some attributes out of <meta dir="independent">...</meta>)
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds missing tags such as [UPDATE] and [DESTROY]
for expectation events. The Linux kernel does not support
any of this expectation events yet, but we include it for
future use.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds an example on how to set up a user-space expectation.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch changes the existing example to make it more realistic.
It also removes the timeout setup since this field is ignored by
ctnetlink if we specify a kernel-space conntrack helper to be used.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch allows to set the expectation flags from user-space.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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We also remove the reference to CTA_EXPECT_QUEUENR with was not ever
pushed into Linux kernel mainline.
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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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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PKG_CHECK_MODULES already produces its own (and more verbose) messsage
when a module cannot be found.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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There is no need to call AC_CANONICAL_SYSTEM when only AC_CANONICAL_HOST
is needed. Also, checking for $target is factually incorrect, since we
do not produce object code like a compiler. Use $host, which specifies
the triple/quadrople where the compiled program is supposed to run.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Note: the use of -i seems required, otherwise autoreconf barfs about
missing tools (depcomp, etc.). Since they are provided in the tarballs
as files anyway rather than like previously as symlinks, I do not see a
problem using -i.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Make_global.am:7: "INCLUDES" is the old name for "AM_CPPFLAGS" (or "*_CPPFLAGS")
qa/Makefile.am:1: "Make_global.am" included from here
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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automake options also need to definitely go into configure.ac, otherwise
they only apply to a single directory.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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With this patch, we put stack.c and bsf.c out of the documentation
since they are only for internal use. We also include the relevant
exported libnetfilter_*.h headers.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch bumps version to 0.9.0 and it bumps the API revision number.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes an EINVAL error that we hit in Linux kernel <= 2.6.25.
Basically, if we send an empty CTA_PROTOINFO_TCP attribute nest, the
kernel returns EINVAL. To fix this, we previously check if there is
any TCP attribute set.
Reported-by: Rui Sousa <rui.sousa@mindspeed.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Still missing several enumerations that should be documented.
You still have to look at libnetfilter_conntrack.h to check
conntrack object attributes.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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libtoolize: Consider adding `AC_CONFIG_MACRO_DIR([m4])' to configure.in and
libtoolize: rerunning libtoolize, to keep the correct libtool macros in-tree
libtoolize: Consider adding `-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Since Linux kernel 2.6.34, the attribute validation for CTA_HELP_NAME
requires that the string must be NULL terminated. I think that this
should be fixed in the kernel instead since it breaks old binaries of
the library. However, we're already in 2.6.36-rc, so let's fix it
in user-space and hope that everyone upgrades.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch bumps version to 0.0.102 and it bumps the API revision number.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes the NAT sequence adjustment setter (they were swapped!).
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes kernel-space filtering via BSF for several
network addresses. The problem is that we store the network
address of the netlink message in the ALU. Then, we perform
an AND of the network mask and the address, this operation
is stored again in the ALU. If we compare the address with
a second address, we have to reload the address to the ALU.
The following example clarifies the problem, in the following
order, we want to filter:
1) 224.0.0.0/4
2) 127.0.0.1/32
Now, we receive traffic from 127.0.0.1, it should be filtered.
However, without this patch, it is not. Let's see why:
ALU 7f000001 (addr=127.0.0.1)
AND f0000000 (cidr=4)
-------------------------------
ALU 70000000
this is stored in the ALU. Then, we check for 127.0.0.1:
ALU 70000000 (addr=127.0.0.1) <-- it should be 7f000001
AND ffffffff (cidr=32)
-------------------------------
ALU 70000000
This does not match 7f000001. To fix this, we have to reload
7f000001 to the ALU. Thus, the second comparison works fine.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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make output of nfct_snprintf() similar to /proc/net/nf_conntrack.
tcp 6 23 TIME_WAIT src=XX.208.XX.243 dst=XX.14.XX.100 sport=35917 dport=80 packets=10 bytes=2555 src=XX.14.XX.100 dst=XX.208.XX.243 sport=80 dport=35917 packets=9 bytes=1163 [ASSURED] mark=0 secmark=0 use=2 zone=1
^^^^^^
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add Patrick's zone support for libnetfilter_conntrack.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes parsing of 64 bits attributes (that are unaligned)
in ctnetlink. It would be better to add nfnl_get_uX() functions
similar to those in include/net/netlink.h to libnfnetlink to avoid
this sort of errors.
Reported-by: Jan Engelhardt <jengelh@medozas.es>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch adds the missing bits to support the modification of the
TCP window scale factor in a conntrack entry. The kernel support
has been already there since 2.6.23.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes wrong comments in the libnetfilter_conntrack.h header
file. The counters of the user-space conntrack object has always been
64-bits long (even if during some time they were 32-bits long in the
kernel). This does not break backward compatibility, but users (like
ulogd2) has to fix this to avoid truncating the counters.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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