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MLpcap - 0.9
------------
MLpcap implements ocaml stubs to libpcap.
It is distributed under the Lesser GPL.
Libpcap is available at www.tcpdump.org.
tests/ contains code snippets showing the usage of MLpcap functions.
Software requirements
---------------------
libpcap 0.7-0.8.x: http://www.tcpdump.org/
CamlIDL: http://caml.inria.fr/camlidl/
Download: http://caml.inria.fr/distrib/bazar-ocaml/
FFCall: http://www.gnu.org/directory/libs/c/ffcall.html
Download: ftp://ftp.santafe.edu/pub/gnu/
Building the library
--------------------
Run the configure script with the appropriate paths to ffcall and
camlidl (read INSTALL) and type 'make' afterwards.
MLpcap vs. libpcap types
------------------------
pcap_handle <-> pcap_t*
pcap_pkthdr <-> struct pcap_pkthdr
pcap_stat <-> struct pcap_stat
pcap_dumper <-> struct pcap_dumper*
pcap_if <-> struct pcap_if
bpf_program <-> struct bpf_program*
Differences to the original libpcap
-----------------------------------
- All functions which return values,structs etc as one of its arguments
in the C version use N-tuple return values in ocaml.
E.g. pcap_stats defined in C:
int pcap_stats(pcap_t *p, struct pcap_stat *ps)
and in OCaml:
pcap_stats : pcap_handle -> int * pcap_stat
- All functions containing an errbuf argument in its C version don't
use errbuf as argument in MLpcap. If an error occurs the function raises
an exception Failure with errbuf as argument.
These functions are: pcap_open_live, pcap_open_offline, pcap_setnonblock,
pcap_getnonblock, pcap_findalldevs, pcap_lookupnet
- pcap_dump is called pcap_dump_direct and must be used as shown in
tests/pcap_dump_direct.ml
- pcap_next/pcap_next_ex has not been implemented since it's only a
wrapper to pcap_dispatch and can be implemented as shown in
tests/pcap_next.ml
Comments and Bugreports
-----------------------
Comments, Suggestions etc are welcome. Write me to: jonny@drugphish.ch
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