package charrua-core

  1. Overview
  2. Docs

Description

Charrua-core consists of two modules, a Dhcp_wire responsible for parsing and constructing DHCP messages and a Dhcp_server module used for constructing DHCP servers.

You can browse the API for charrua-core at http://mirage.github.io/charrua-core/api

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

Features

  • 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_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.

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

Published: 09 Jan 2019

README

Charrua DHCP - a DHCP client, server and wire frame encoder and decoder

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

  • charrua-core: a library that handles wire traffic parsing and a server implementation

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

  • charrua-client-lwt: a DHCP client library with timeouts and network read/write

  • charrua-client-mirage: a MirageOS-compatible set of interfaces to charrua-client-lwt

  • charrua-unix: a Unix DHCP server implementation

Charrua-core

Charrua-core consists of two modules, a Dhcp_wire responsible for parsing and constructing DHCP messages and a Dhcp_server module used for constructing DHCP servers.

You can browse the API for charrua-core at http://mirage.github.io/charrua-core/api

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

Features
  • 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_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.

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

Charrua-client

charrua-client is a DHCP client powered by charrua-core.

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-core.

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.

Dependencies (11)

  1. rresult
  2. tcpip >= "3.6.0" & < "3.7.0"
  3. macaddr
  4. ipaddr >= "3.0.0" & < "4.0.0"
  5. sexplib
  6. cstruct >= "3.0.1" & < "4.0.0"
  7. ocaml >= "4.0.3"
  8. menhir build
  9. ppx_cstruct build
  10. ppx_sexp_conv build
  11. jbuilder >= "1.0+beta7"

Dev Dependencies (2)

  1. cstruct-unix with-test
  2. io-page-unix with-test

Used by (5)

  1. charrua-client >= "0.11.0" & < "0.12.0"
  2. charrua-client-lwt >= "0.11.0" & < "0.12.0"
  3. charrua-client-mirage >= "0.11.0" & < "0.12.0"
  4. charrua-unix >= "0.5" & != "0.10" & < "0.12.0"
  5. vpnkit

Conflicts

None