156 lines
4.0 KiB
Plaintext
156 lines
4.0 KiB
Plaintext
(*
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Module: Cron
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Parses /etc/cron.d/*, /etc/crontab
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Author: Raphael Pinson <raphink@gmail.com>
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About: Reference
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This lens tries to keep as close as possible to `man 5 crontab` where
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possible.
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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: Lens Usage
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Sample usage of this lens in augtool
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* Get the entry that launches '/usr/bin/ls'
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> match '/files/etc/crontab/entry[. = "/usr/bin/ls"]'
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About: Configuration files
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This lens applies to /etc/cron.d/* and /etc/crontab. See <filter>.
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*)
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module Cron =
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autoload xfm
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(************************************************************************
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* Group: USEFUL PRIMITIVES
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*************************************************************************)
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(* Group: Generic primitives *)
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(* Variable: eol *)
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let eol = Util.eol
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(* Variable: indent *)
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let indent = Util.indent
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(* Variable: comment *)
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let comment = Util.comment
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(* Variable: empty *)
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let empty = Util.empty
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(* Variable: num *)
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let num = /[0-9*][0-9\/,*-]*/
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(* Variable: alpha *)
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let alpha = /[A-Za-z]{3}/
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(* Variable: alphanum *)
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let alphanum = (num|alpha) . ("-" . (num|alpha))?
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(* Variable: entry_prefix *)
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let entry_prefix = /-/
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(* Group: Separators *)
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(* Variable: sep_spc *)
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let sep_spc = Util.del_ws_spc
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(* Variable: sep_eq *)
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let sep_eq = Util.del_str "="
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(************************************************************************
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* Group: ENTRIES
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*************************************************************************)
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(************************************************************************
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* View: shellvar
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* A shell variable in crontab
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*************************************************************************)
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let shellvar =
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let key_re = /[A-Za-z1-9_-]+(\[[0-9]+\])?/ - "entry" in
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let sto_to_eol = store /[^\n]*[^ \t\n]/ in
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[ key key_re . sep_eq . sto_to_eol . eol ]
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(* View: - prefix of an entry *)
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let prefix = [ label "prefix" . store entry_prefix ]
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(* View: minute *)
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let minute = [ label "minute" . store num ]
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(* View: hour *)
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let hour = [ label "hour" . store num ]
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(* View: dayofmonth *)
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let dayofmonth = [ label "dayofmonth" . store num ]
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(* View: month *)
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let month = [ label "month" . store alphanum ]
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(* View: dayofweek *)
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let dayofweek = [ label "dayofweek" . store alphanum ]
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(* View: user *)
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let user = [ label "user" . store Rx.word ]
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(************************************************************************
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* View: time
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* Time in the format "minute hour dayofmonth month dayofweek"
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*************************************************************************)
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let time = [ label "time" .
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minute . sep_spc . hour . sep_spc . dayofmonth
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. sep_spc . month . sep_spc . dayofweek ]
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(* Variable: the valid values for schedules *)
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let schedule_re = "reboot" | "yearly" | "annually" | "monthly"
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| "weekly" | "daily" | "midnight" | "hourly"
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(************************************************************************
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* View: schedule
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* Time in the format "@keyword"
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*************************************************************************)
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let schedule = [ label "schedule" . Util.del_str "@"
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. store schedule_re ]
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(************************************************************************
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* View: entry
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* A crontab entry
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*************************************************************************)
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let entry = [ label "entry" . indent
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. prefix?
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. ( time | schedule )
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. sep_spc . user
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. sep_spc . store Rx.space_in . eol ]
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(*
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* View: lns
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* The cron lens
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*)
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let lns = ( empty | comment | shellvar | entry )*
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(* Variable: filter *)
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let filter =
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incl "/etc/cron.d/*" .
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incl "/etc/crontab" .
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incl "/etc/crontabs/*" .
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excl "/etc/cron.d/at.allow" .
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excl "/etc/cron.d/at.deny" .
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excl "/etc/cron.d/cron.allow" .
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excl "/etc/cron.d/cron.deny" .
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Util.stdexcl
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let xfm = transform lns filter
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