On Sun, Jan 27, 2013 at 10:30 AM, Markus Amend <[email protected]> wrote:
> latest version of libpcap works. Thanks for testing. On Monday, I'll try to find a solution how it can be made compatible with older versions, until then for these two days, a newer libpcap version must be enough. ;-) > -----Ursprüngliche Nachricht----- > Von: [email protected] [mailto:[email protected]] Im > Auftrag von Daniel Borkmann > Gesendet: Samstag, 26. Januar 2013 20:02 > An: [email protected] > Betreff: Re: [netsniff-ng] Bpfc questions > > On Sat, Jan 26, 2013 at 4:13 PM, Markus Amend <[email protected]> > wrote: >> First: >unrecognized command line option >> "-Wunused-but-set-parameter"<, I have to comment it out >> Second: I have the same issue with libpcap-dev 0.8 installod on Ubuntu >> 10.04 >> 64bit: >> >> make netsniff-ng >> /home/markus/.bashrc: 13: shopt: not found >> /home/markus/.bashrc: 21: shopt: not found >> /home/markus/.bashrc: 99: shopt: not found >> /etc/bash_completion: 33: [[: not found >> /etc/bash_completion: 39: [[: not found >> /etc/bash_completion: 52: Bad substitution NACL_LIB_DIR/NACL_INC_DIR >> is undefined, building libnacl with curvetun! >> Building netsniff-ng: >> -e CC hash.c >> -e CC dissector.c >> -e CC dissector_eth.c >> -e CC dissector_80211.c >> -e CC proto_arp.c >> -e CC proto_ethernet.c >> -e CC proto_icmpv4.c >> -e CC proto_icmpv6.c >> -e CC proto_igmp.c >> -e CC proto_ip_authentication_hdr.c >> -e CC proto_ip_esp.c >> -e CC proto_ipv4.c >> -e CC proto_ipv6.c >> -e CC proto_ipv6_dest_opts.c >> -e CC proto_ipv6_fragm.c >> -e CC proto_ipv6_hop_by_hop.c >> -e CC proto_ipv6_in_ipv4.c >> -e CC proto_ipv6_mobility_hdr.c >> -e CC proto_ipv6_no_nxt_hdr.c >> -e CC proto_ipv6_routing.c >> -e CC proto_none.c >> -e CC proto_tcp.c >> -e CC proto_udp.c >> -e CC proto_vlan.c >> -e CC proto_vlan_q_in_q.c >> -e CC proto_mpls_unicast.c >> -e CC proto_80211_mac_hdr.c >> -e CC xio.c >> -e CC xutils.c >> -e CC xmalloc.c >> -e CC bpf.c >> bpf.c: In function ‘bpf_parse_rules’: >> bpf.c:780: error: storage size of ‘bpfp’ isn’t known >> bpf.c:788: error: ‘PCAP_NETMASK_UNKNOWN’ undeclared (first use in this >> function) >> bpf.c:788: error: (Each undeclared identifier is reported only once >> bpf.c:788: error: for each function it appears in.) >> bpf.c:780: warning: unused variable ‘bpfp’ >> make: *** [netsniff-ng/bpf.o] Error 1 > > Would it work, if you download and install the latest pcap? > > https://github.com/mcr/libpcap > >> -----Ursprüngliche Nachricht----- >> Von: [email protected] >> [mailto:[email protected]] Im Auftrag von Daniel Borkmann >> Gesendet: Samstag, 26. Januar 2013 11:10 >> An: [email protected] >> Betreff: Re: [netsniff-ng] Bpfc questions >> >> On Sat, Jan 26, 2013 at 1:35 AM, Jon Schipp <[email protected]> wrote: >>> Grabbed the latest: >>> >>> Building netsniff-ng toolkit (0.5.8-rc0) for x86_64-linux-gnu: >>> Building netsniff-ng: >>> -e CC bpf.c >>> bpf.c: In function ‘bpf_parse_rules’: >>> bpf.c:780:21: error: storage size of ‘bpfp’ isn’t known >>> bpf.c:780:21: warning: unused variable ‘bpfp’ [-Wunused-variable] >>> make: *** [netsniff-ng/bpf.o] Error 1 >> >> Hmm, compilation works fine for me on Fedora. Do you have >> libpcap-dev/devel installed? It's used (only) to generate a >> tcpdump-like BPF filter. Do you have this file? >> >> * /usr/include/pcap/pcap.h >> >> Would it work if you change the include in bpf.c to <pcap.h> only? >> >> Let me know. >> >>> On Fri, Jan 25, 2013 at 9:53 AM, Daniel Borkmann >>> <[email protected]> >> wrote: >>>> On Fri, Jan 25, 2013 at 4:27 AM, Jon Schipp <[email protected]> wrote: >>>> >>>>> I'm confused about the the terminology here too. I imagine that >>>>> "-L|--lla Compile low-level BPF" means compile to >>>>> low-level BPF rather than _output_ a low-level filter. I think it's >>>>> just the ambiguous wording because mnemonics like ld, jeq look >>>>> higher level than 0x20, 0x28. >>>> >>>> Right, I've just removed that in upstream. >>>> >>>> Also, for a better user experience, I've decided to add support for >>>> tcpdump-like filtering syntax. >>>> >>>> For netsniff-ng this means, e.g.: >>>> >>>> - netsniff-ng -i eth0 udp or tcp >>>> - netsniff-ng -i eth0 -f "udp or tcp" -V -o out.pcap --silent >>>> - netsniff-ng -i eth0 -f filter.bpfo -V -o out.pcap --silent >>>> >>>> Where ``cat filter.bpfo'' contains sth. like these opcodes ... >>>> >>>> { 0x20, 0, 0, 0x00000008 }, >>>> { 0x15, 0, 3, 0xccddeeff }, >>>> { 0x28, 0, 0, 0x00000006 }, >>>> { 0x15, 0, 1, 0x0000aabb }, >>>> { 0x6, 0, 0, 0xffffffff }, >>>> { 0x6, 0, 0, 0x00000000 }, >>>> >>>> .... that were produced by bpfc. This means, now you have the full >>>> program. ;-) For low-level debugging or advanced filtering (i.e. >>>> Linux socket filter extensions), you can use bpfc, compile it into a >>>> file, pass it to netsniff-ng, for high-level filtering everyone >>>> knows tcpdump-like syntax, so you can pass this as well via -f. >>>> Internally, it's checked if the parameter you've passed is a file or > not. >>> >>> -- >>> >>> >> >> -- >> >> >> >> -- >> >> > > -- > > > --
