charrua

DHCP wire frame encoder and decoder
README

charrua is an
ISC-licensed DHCP library implementation in OCaml.
It provides the following packages:

  • charrua: a library that handles wire traffic parsing

  • charrua-server: a DHCP server implementation

  • charrua-client: a library for handling DHCP client state and messages

  • charrua-unix: a Unix DHCP server implementation

Charrua

The name charrua is a reference to the, now extinct, semi-nomadic people of
southern South America.

Charrua consists of the single module Dhcp_wire responsible for parsing and
constructing DHCP messages,

You can browse the API for charrua at
https://mirage.github.io/charrua/

Features
  • Dhcp_wire provides marshalling and unmarshalling utilities for DHCP, it is the
    base for Dhcp_server.

  • Logic/sequencing is agnostic of IO and platform, so it can run on Unix as a
    process, as a Mirage unikernel or anything else.

  • All DHCP options are supported at the time of this writing.

  • Code is purely applicative.

  • It's in OCaml, so it's pretty cool.

Charrua-server

The module Dhcp_server supports a stripped down ISC dhcpd.conf, so you can
probably just use your old dhcpd.conf. It also supports manual configuration
building in OCaml.

dhcp
is a MirageOS DHCP unikernel server based on charrua,
included as a part of the MirageOS unikernel example and starting-point
repository.

Charrua-client

charrua-client is a DHCP client powered by charrua.

The base library exposes a simple state machine in Dhcp_client
for use in acquiring a DHCP lease.

charrua-client-lwt extends charrua-client with a functor Dhcp_client_lwt,
using the provided modules for timing and networking logic,
for convenient use by a program which might wish to implement a full client.

charrua-client-mirage exposes an additional Dhcp_client_mirage for direct use
with the MirageOS library operating system.

Charrua-unix Server

charrua-unix is an ISC-licensed Unix DHCP daemon based on
charrua.

Features
  • Supports a stripped down ISC dhcpd.conf. A configuration sample can be found
    here

  • Privilege dropping: the daemon doesn't run as root.

  • Almost purely-functional code.

  • Support for multiple interfaces/subnets.

Try charruad --help for options.

This project became one of the Mirage Pioneer
projects.

Install
Published
26 Nov 2020
Sources
charrua-v1.3.0.tbz
sha256=b9f59f45d2eae1253de1f7b4d42f5f2d772949b55f963a04eae40086b1936afc
sha512=426868b9cc4b861fa5e48d59d03891799cd0c4cca67adc2bcb665176c2ea47c93677868fcb2d78706eedb4aabcc0582f8b3bfe9c8f3829d4a6d5a181871eadb4
Dependencies
tcpip
>= "5.0.0" & < "7.0.0"
ethernet
>= "2.2.0" & < "3.0.0"
macaddr
>= "4.0.0"
ipaddr
>= "5.0.0"
cstruct
>= "3.0.1"
ppx_sexp_conv
>= "v0.10.0"
dune
>= "1.4.0"
ocaml
>= "4.06.0"
Reverse Dependencies