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