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(* Module: Ntpd Parses OpenNTPD's ntpd.conf Author: Jasper Lievisse Adriaanse <jasper@jasper.la> About: Reference This lens is used to parse OpenNTPD's configuration file, ntpd.conf. http://openntpd.org/ About: Usage Example To be documented About: License This file is licensed under the LGPL v2+, like the rest of Augeas. About: Configuration files This lens applies to /etc/ntpd.conf. See <filter>. *) module Ntpd = autoload xfm (************************************************************************ * Group: Utility variables/functions ************************************************************************) (* View: comment *) let comment = Util.comment (* View: empty *) let empty = Util.empty (* View: eol *) let eol = Util.eol (* View: space *) let space = Sep.space (* View: word *) let word = Rx.word (* View: device_re *) let device_re = Rx.device_name | /\*/ (* View: address_re *) let address_re = Rx.ip | /\*/ | Rx.hostname (* View: stratum_re value between 1 and 15 *) let stratum_re = /1[0-5]|[1-9]/ (* View: refid_re string with length < 5 *) let refid_re = /[A-Za-z0-9_.-]{1,5}/ (* View: weight_re value between 1 and 10 *) let weight_re = /10|[1-9]/ (* View: rtable_re 0 - RT_TABLE_MAX *) let rtable_re = Rx.byte (* View: correction_re should actually only match between -127000000 and 127000000 *) let correction_re = Rx.relinteger_noplus (************************************************************************ * View: key_opt_rtable_line * A subnode with a keyword, an optional routing table id and an end * of line. * * Parameters: * kw:regexp - the pattern to match as key * sto:lens - the storing lens ************************************************************************) let key_opt_rtable_line (kw:regexp) (sto:lens) = let rtable = [ Util.del_str "rtable" . space . label "rtable" . store rtable_re ] in [ key kw . space . sto . (space . rtable)? . eol ] (************************************************************************ * View: key_opt_weight_rtable_line * A subnode with a keyword, an optional routing table id, an optional * weight-value and an end of line. * of line. * * Parameters: * kw:regexp - the pattern to match as key * sto:lens - the storing lens ************************************************************************) let key_opt_weight_rtable_line (kw:regexp) (sto:lens) = let rtable = [ Util.del_str "rtable" . space . label "rtable" . store rtable_re ] in let weight = [ Util.del_str "weight" . space . label "weight" . store weight_re ] in [ key kw . space . sto . (space . weight)? . (space . rtable)? . eol ] (************************************************************************ * View: opt_value * A subnode for optional values. * * Parameters: * s:string - the option name and subtree label * r:regexp - the pattern to match as store ************************************************************************) let opt_value (s:string) (r:regexp) = Build.key_value s space (store r) (************************************************************************ * Group: Keywords ************************************************************************) (* View: listen listen on address [rtable table-id] *) let listen = let addr = [ label "address" . store address_re ] in key_opt_rtable_line "listen on" addr (* View: server server address [weight weight-value] [rtable table-id] *) let server = let addr = [ label "address" . store address_re ] in key_opt_weight_rtable_line "server" addr (* View: servers servers address [weight weight-value] [rtable table-id] *) let servers = let addr = [ label "address" . store address_re ] in key_opt_weight_rtable_line "servers" addr (* View: sensor sensor device [correction microseconds] [weight weight-value] [refid string] [stratum stratum-value] *) let sensor = let device = [ label "device" . store device_re ] in let correction = opt_value "correction" correction_re in let weight = opt_value "weight" weight_re in let refid = opt_value "refid" refid_re in let stratum = opt_value "stratum" stratum_re in [ key "sensor" . space . device . (space . correction)? . (space . weight)? . (space . refid)? . (space . stratum)? . eol ] (************************************************************************ * Group: Lens ************************************************************************) (* View: keyword *) let keyword = listen | server | servers | sensor (* View: lns *) let lns = ( empty | comment | keyword )* (* View: filter *) let filter = (incl "/etc/ntpd.conf") let xfm = transform lns filter