diff options
author | Willem de Bruijn <willemb@google.com> | 2013-03-12 05:44:12 +0000 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-04-02 00:08:49 +0200 |
commit | 1ac30c97c339957b6e3c5cf571de7bc38c827730 (patch) | |
tree | d00e6f632b49a2a3ffcae1aa8d38701db9e1ee33 /configure.ac | |
parent | e0a0dd703b3448f0f07fc59b7232bf1f1cce7b86 (diff) |
utils: nfbpf_compile
A BPF compiler to convert tcpdump expressions to the decimal format
accepted by the libxt_bpf.
Generate a file and pass that to iptables:
nfbpf_compile RAW 'udp dst port 9000' > test.bpf
iptables -A OUTPUT -m bpf --bytecode-file test.bpf -j LOG
Or pass the output directly to iptables using backticks:
iptables -A INPUT -m bpf --bytecode \
"`./nfbpf_compile RAW 'udp dst port 9000'" -j LOG
This utility depends on libpcap. The library is only compiled if the option
--enable-bpf-compiler is explicitly passed to ./configure and libpcap is
found.
Pablo has mangled the original patch to rename the utility to
nfbpf_compile. Also modified the output to match exactly what
-m bpf --bytecode needs.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'configure.ac')
-rw-r--r-- | configure.ac | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 2ba5cecb..06204665 100644 --- a/configure.ac +++ b/configure.ac @@ -50,6 +50,9 @@ AC_ARG_ENABLE([devel], [enable_devel="$enableval"], [enable_devel="yes"]) AC_ARG_ENABLE([libipq], AS_HELP_STRING([--enable-libipq], [Build and install libipq])) +AC_ARG_ENABLE([bpf-compiler], + AS_HELP_STRING([--enable-bpf-compiler], [Build bpf compiler]), + [enable_bpfc="yes"]) AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=PATH], [Path to the pkgconfig directory [[LIBDIR/pkgconfig]]]), [pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig']) @@ -88,6 +91,7 @@ AM_CONDITIONAL([ENABLE_IPV6], [test "$enable_ipv6" = "yes"]) AM_CONDITIONAL([ENABLE_LARGEFILE], [test "$enable_largefile" = "yes"]) AM_CONDITIONAL([ENABLE_DEVEL], [test "$enable_devel" = "yes"]) AM_CONDITIONAL([ENABLE_LIBIPQ], [test "$enable_libipq" = "yes"]) +AM_CONDITIONAL([ENABLE_BPFC], [test "$enable_bpfc" = "yes"]) PKG_CHECK_MODULES([libnfnetlink], [libnfnetlink >= 1.0], [nfnetlink=1], [nfnetlink=0]) |