fleet/orbit/pkg/augeas/lenses/pg_hba.aug
2022-12-02 10:19:54 -05:00

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(*
Module: Pg_Hba
Parses PostgreSQL's pg_hba.conf
Author: Aurelien Bompard <aurelien@bompard.org>
About: Reference
The file format is described in PostgreSQL's documentation:
http://www.postgresql.org/docs/current/static/auth-pg-hba-conf.html
About: License
This file is licensed under the LGPL v2+, like the rest of Augeas.
About: Configuration files
This lens applies to pg_hba.conf. See <filter> for exact locations.
*)
module Pg_Hba =
autoload xfm
(* Group: Generic primitives *)
let eol = Util.eol
let word = Rx.neg1
(* Variable: ipaddr
CIDR or ip+netmask *)
let ipaddr = /[0-9a-fA-F:.]+(\/[0-9]+|[ \t]+[0-9.]+)/
(* Variable: hostname
Hostname, FQDN or part of an FQDN possibly
starting with a dot. Taken from the syslog lens. *)
let hostname = /\.?[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]*[a-zA-Z0-9])?)*/
let comma_sep_list (l:string) =
let lns = [ label l . store word ] in
Build.opt_list lns Sep.comma
(* Group: Columns definitions *)
(* View: ipaddr_or_hostname *)
let ipaddr_or_hostname = ipaddr | hostname
(* View: database
TODO: support for quoted strings *)
let database = comma_sep_list "database"
(* View: user
TODO: support for quoted strings *)
let user = comma_sep_list "user"
(* View: address *)
let address = [ label "address" . store ipaddr_or_hostname ]
(* View: option
part of <method> *)
let option =
let value_start = label "value" . Sep.equal
in [ label "option" . store Rx.word
. (Quote.quote_spaces value_start)? ]
(* View: method
can contain an <option> *)
let method = [ label "method" . store /[A-Za-z][A-Za-z0-9-]+/
. ( Sep.tab . option )* ]
(* Group: Records definitions *)
(* View: record_local
when type is "local", there is no "address" field *)
let record_local = [ label "type" . store "local" ] . Sep.tab .
database . Sep.tab . user . Sep.tab . method
(* Variable: remtypes
non-local connection types *)
let remtypes = "host" | "hostssl" | "hostnossl"
(* View: record_remote *)
let record_remote = [ label "type" . store remtypes ] . Sep.tab .
database . Sep.tab . user . Sep.tab .
address . Sep.tab . method
(* View: record
A sequence of <record_local> or <record_remote> entries *)
let record = [ seq "entries" . (record_local | record_remote) . eol ]
(* View: filter
The pg_hba.conf conf file *)
let filter = (incl "/var/lib/pgsql/data/pg_hba.conf" .
incl "/var/lib/pgsql/*/data/pg_hba.conf" .
incl "/var/lib/postgresql/*/data/pg_hba.conf" .
incl "/etc/postgresql/*/*/pg_hba.conf" )
(* View: lns
The pg_hba.conf lens *)
let lns = ( record | Util.comment | Util.empty ) *
let xfm = transform lns filter