(*

Module: Pagekite

  Parses /etc/pagekite.d/

Author: Michael Pimmer <blubb@fonfon.at>

About: License

   This file is licenced under the LGPL v2+, like the rest of Augeas.

*)

module Pagekite =

autoload xfm

(* View: lns *)

(* Variables *)

let equals = del /[ \t]*=[ \t]*/ "="

let neg2 = /[^# \n\t]+/

let neg3 = /[^# \:\n\t]+/

let eol = del /\n/ "\n"

(* Match everything from here to eol, cropping whitespace at both ends *)

let to_eol  = /[^ \t\n](.*[^ \t\n])?/

(* A key followed by comma-separated values 

  k: name of the key

  key_sep: separator between key and values

  value_sep: separator between values

  sto: store for values

*)

let key_csv_line (k:string) (key_sep:lens) (value_sep:lens) (sto:lens) = 

  [ key k . key_sep . [ seq k . sto ] .

    [ seq k . value_sep . sto ]* . Util.eol ]

(* entries for pagekite.d/10_account.rc *)

let domain = [ key "domain" . equals . store neg2 . Util.comment_or_eol ]

let frontend = Build.key_value_line ("frontend" | "frontends") 

                                       equals (store Rx.neg1)

let host = Build.key_value_line "host" equals (store Rx.ip)

let ports = key_csv_line "ports" equals Sep.comma (store Rx.integer)

let protos = key_csv_line "protos" equals Sep.comma (store Rx.word)

(* entries for pagekite.d/20_frontends.rc *)

let kitesecret = Build.key_value_line "kitesecret" equals (store Rx.space_in)

let kv_frontend = Build.key_value_line ( "kitename" | "fe_certname" | 

                                         "ca_certs" | "tls_endpoint" ) 

                                       equals (store Rx.neg1)

(* entries for services like 80_httpd.rc *)

let service_colon = del /[ \t]*:[ \t]*/ " : "

let service_on = [ key "service_on" . [ seq "service_on" . equals .

                   [ label "protocol" . store neg3 ] . service_colon .

                   [ label "kitename" . (store neg3) ] . service_colon .

                   [ label "backend_host" . (store neg3) ] . service_colon .

                   [ label "backend_port" . (store neg3) ] . service_colon . (

                     [ label "secret" . (store Rx.no_spaces) . Util.eol ] | eol

                   ) ] ]

let service_cfg = [ key "service_cfg" . equals . store to_eol . eol ]

let flags = ( "defaults" | "isfrontend" | "abort_not_configured" | "insecure" )

let entries = Build.flag_line flags

        | domain

        | frontend

        | host

        | ports

        | protos

        | kv_frontend

        | kitesecret

        | service_on

        | service_cfg

let lns = ( entries | Util.empty | Util.comment )*

(* View: filter *)

let filter = incl "/etc/pagekite.d/*.rc"

        . Util.stdexcl

let xfm = transform lns filter