Sharp.Augeas/Sharp.Augeas.Test/lens/authorized_keys.aug

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2022-11-08 20:57:02 +03:00
(*
Module: Authorized_Keys
Parses SSH authorized_keys
Author: Raphael Pinson <raphael.pinson@camptocamp.com>
About: Reference
This lens tries to keep as close as possible to `man 5 authorized_keys` where possible.
About: License
This file is licenced under the LGPL v2+, like the rest of Augeas.
About: Lens Usage
To be documented
About: Configuration files
This lens applies to SSH authorized_keys. See <filter>.
About: Examples
The <Test_Authorized_Keys> file contains various examples and tests.
*)
module Authorized_Keys =
autoload xfm
(* View: option
A key option *)
let option =
let kv_re = "command" | "environment" | "from"
| "permitopen" | "principals" | "tunnel"
in let flag_re = "cert-authority" | "no-agent-forwarding"
| "no-port-forwarding" | "no-pty" | "no-user-rc"
| "no-X11-forwarding"
in let option_value = Util.del_str "\""
. store /((\\\\")?[^\\\n"]*)+/
. Util.del_str "\""
in Build.key_value kv_re Sep.equal option_value
| Build.flag flag_re
(* View: key_options
A list of key <option>s *)
let key_options = [ label "options" . Build.opt_list option Sep.comma ]
(* View: key_type *)
let key_type =
let key_type_re = /ecdsa-sha2-nistp[0-9]+/ | /ssh-[a-z0-9]+/
in [ label "type" . store key_type_re ]
(* View: key_comment *)
let key_comment = [ label "comment" . store Rx.space_in ]
(* View: authorized_key *)
let authorized_key =
[ label "key"
. (key_options . Sep.space)?
. key_type . Sep.space
. store Rx.no_spaces
. (Sep.space . key_comment)?
. Util.eol ]
(* View: lns
The authorized_keys lens
*)
let lns = ( Util.empty | Util.comment | authorized_key)*
(* Variable: filter *)
let filter = incl (Sys.getenv("HOME") . "/.ssh/authorized_keys")
let xfm = transform lns filter