From 1ac30c97c339957b6e3c5cf571de7bc38c827730 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Tue, 12 Mar 2013 05:44:12 +0000 Subject: 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 Signed-off-by: Pablo Neira Ayuso --- utils/Makefile.am | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'utils/Makefile.am') diff --git a/utils/Makefile.am b/utils/Makefile.am index f1bbfc52..bfafd1d0 100644 --- a/utils/Makefile.am +++ b/utils/Makefile.am @@ -4,7 +4,17 @@ AM_CFLAGS = ${regular_CFLAGS} AM_CPPFLAGS = ${regular_CPPFLAGS} -I${top_builddir}/include \ -I${top_srcdir}/include ${libnfnetlink_CFLAGS} -sbin_PROGRAMS = nfnl_osf -pkgdata_DATA = pf.os +sbin_PROGRAMS = +pkgdata_DATA = + +if HAVE_LIBNFNETLINK +sbin_PROGRAMS += nfnl_osf +pkgdata_DATA += pf.os nfnl_osf_LDADD = -lnfnetlink +endif + +if ENABLE_BPFC +sbin_PROGRAMS += nfbpf_compile +nfbpf_compile_LDADD = -lpcap +endif -- cgit v1.2.3