PhoenixCGI

A small CGI controller for Phoenix.

Setup

Add PhoenixCGI to your deps in mix.exs:

defp deps do
  [
    {:phoenix_cgi, "~> 0.1"},
    ...
  ]
end

then, and that's really important, in your endpoint.ex, add the following body_reader in your plug Plug.Parsers:

plug Plug.Parsers,
  body_reader: {PhoenixCGI.CacheRawBody, :read_body, []},
  ...

This will cause the body of your request to be saved in a private field, so that we will be able to pass it to the CGI scripts.

Usage

You will then be able to use PhoenixCGI as any controller. For instance, if you want to serve git-http-backend on a /git/ to serve all repositories in /opt/git/repos/, you can setup as follows:

match :*, "/git/*path", PhoenixCGI,
  binary: "/usr/lib/git-core/git-http-backend",
  extra_env: %{
    GIT_PROJECT_ROOT: "/opt/git/repos/",
    GIT_HTTP_EXPORT_ALL: "1"
  }

You can also define a plug that will define, for instance, which project to serve, with assign/3.

defp set_repo(conn) do
  assign(conn, :extra_env, %{
    GIT_PROJECT_ROOT: "/opt/git/repos/demo.git",
    GIT_HTTP_EXPORT_ALL: "1"
  })
end

and then use it

pipeline :git do
  plug :set_repo
end

scope "/" do
  pipe_through :git

  match :*, "/git/*path", PhoenixCGI,
    binary: "/usr/lib/git-core/git-http-backend"
end