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(define-module (email-key-rotation serialize)
#:use-module (email-key-rotation state)
#:use-module (ice-9 exceptions)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 receive)
#:use-module (ice-9 match)
#:use-module (srfi srfi-26)
#:use-module (rnrs bytevectors)
#:use-module (oop goops)
#:export (read-state write-state)
#:declarative? #t
#:duplicates (merge-generics))
(define* (read-state #:optional (port (current-input-port)))
(with-exception-handler
(lambda (exn)
(raise-exception
(make-exception
(make-exception-with-origin 'read-state)
(make-exception-with-irritants (list port))
(make-exception-with-message
"while reading the current state file:")
exn)))
(lambda ()
(match (read port)
(('email-key-rotation-state
private-key-file
(selectors ...)
selector
current-key
expired-key)
(the-email-key-rotation-state
(make <email-key-rotation-state>
#:private-key-file private-key-file
#:selectors selectors
#:current-dkim-selector selector
#:current-dkim-private-key current-key
#:expired-dkim-private-key expired-key)))))))
(define* (write-state state #:optional (port (current-output-port)))
(with-exception-handler
(lambda (exn)
(raise-exception
(make-exception
(make-exception-with-origin 'write-state)
(make-exception-with-irritants (list state port))
(make-exception-with-message
"cannot write the new state:")
exn)))
(lambda ()
(when (file-port? port)
(chmod port #o600)
(let ((state (the-email-key-rotation-state state)))
(write `(email-key-rotation-state
,(private-key-file state)
(,@(selectors state))
,(current-dkim-selector state)
,(current-dkim-private-key state)
,(expired-dkim-private-key state))
port))))))
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