hackerbase/src/mailman.scm

154 lines
4.2 KiB
Scheme

;;
;; mailman.scm
;;
;; Mailman management interface
;;
;; ISC License
;;
;; Copyright 2023 Brmlab, z.s.
;; Dominik Pantůček <dominik.pantucek@trustica.cz>
;;
;; Permission to use, copy, modify, and/or distribute this software
;; for any purpose with or without fee is hereby granted, provided
;; that the above copyright notice and this permission notice appear
;; in all copies.
;;
;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
;;
(declare (unit mailman))
(module
mailman
(
*mailman-bin*
list-mailman-lists
list-mailman-list-members
load-mailman-list
load-mailman-lists
find-mailman-list
mailman-list-name
mailman-list-members
mailman-sync-members
)
(import scheme
(chicken base)
(chicken pathname)
(chicken string)
(chicken sort)
(chicken format)
utils
progress)
;; Where does the mailman binaries reside
(define *mailman-bin* (make-parameter "/usr/lib/mailman/bin"))
;; Returns full path to given mailman binary
(define (mailman-bin bin)
(make-pathname (*mailman-bin*) bin))
;; Mailman-specific process output lines capture
(define (get-mailman-output-lines bin . args)
(get-process-output-lines
(string-intersperse
(cons (mailman-bin bin)
args)
" ")))
;; Returns the list of available lists
(define (list-mailman-lists)
(get-mailman-output-lines "list_lists" "-b"))
;; Returns the list of members of given list
(define (list-mailman-list-members lst)
(sort
(get-mailman-output-lines "list_members" lst)
string-ci<?))
;; Creates a representation of basic mailman list information
(define (make-mailman-list name members)
(cons name
members))
;; Simple accessors
(define mailman-list-name car)
(define mailman-list-members cdr)
;; Loads a single mailman list as mailman structure, if
;; unsuccessfull, returns only a list with ML name and no member
;; emails.
(define (load-mailman-list name)
(make-mailman-list name
(list-mailman-list-members name)))
;; Loads all lists and members
(define (load-mailman-lists)
(with-progress%
#t "Mailman"
(progress%-advance 0)
(let* ((lists (list-mailman-lists))
(total (length lists)))
(let loop ((lsts lists)
(res '())
(idx 0))
(if (null? lsts)
(let ()
(progress%-advance 1)
;; Will be prepended, therefore reversing result is a
;; bad idea!
res)
(let ((mln (car lsts)))
(progress%-advance (/ idx total))
(loop (cdr lsts)
(cons (load-mailman-list mln) res)
(add1 idx))))))))
;; List of lists, returns the whole list record (including name)
(define (find-mailman-list lsts name)
(assoc name lsts))
;; Returns #t if the email is in given ml
(define (email-in-mailman-list? ml email)
(if (member email (mailman-list-members ml))
#t
#f))
;; Adds given email to given listname
(define (add-email-to-mailman-list listname email)
(let ((result
(get-mailman-output-lines
"add_members" "-r" "-" listname
(sprintf "<<<\"~A\"" email))))
(print result)))
;; Removes given email from given listname
(define (remove-email-from-mailman-list listname email)
(let ((result
(get-mailman-output-lines
"remove_members" (car listname)
(sprintf "\"~A\"" email))))
(print result)))
;; Ensures given email is in given ML
(define (mailman-ensure-member ml email)
(when (not (email-in-mailman-list? ml email))
(add-email-to-mailman-list (mailman-list-name ml) email)))
;; Makes sure given member is removed
(define (mailman-ensure-not-member ml email)
(when (email-in-mailman-list? ml email)
(remove-email-from-mailman-list (mailman-list-name ml) email)))
;; Ensures given ML subscribers are exactly what is in emails list
(define (mailman-sync-members ml emails)
#f)
)