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Moved `net/sendmail' code from unit to module.

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original commit: 9ab674fd0cf1d857534e402f7867cd54412c0dc8
This commit is contained in:
Jon Zeppieri 2011-08-29 21:53:26 -04:00 committed by Eli Barzilay
parent bddc8c4ae5
commit 72a2be1b88
1 changed files with 5 additions and 116 deletions
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121
collects/net/sendmail-unit.rkt
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@ -1,119 +1,8 @@
#lang racket/unit
#lang racket/base
(require racket/system "sendmail-sig.rkt")
(require racket/unit
"sendmail-sig.rkt" "sendmail.rkt")
(import)
(export sendmail^)
(define-unit-from-context sendmail@ sendmail^)
(define-struct (no-mail-recipients exn) ())
(define sendmail-search-path
'("/usr/lib" "/usr/sbin"))
(define sendmail-program-file
(if (or (eq? (system-type) 'unix)
(eq? (system-type) 'macosx))
(let loop ([paths sendmail-search-path])
(if (null? paths)
(raise (make-exn:fail:unsupported
"unable to find sendmail on this Unix variant"
(current-continuation-marks)))
(let ([p (build-path (car paths) "sendmail")])
(if (and (file-exists? p)
(memq 'execute (file-or-directory-permissions p)))
p
(loop (cdr paths))))))
(raise (make-exn:fail:unsupported
"sendmail only available under Unix"
(current-continuation-marks)))))
;; send-mail-message/port :
;; string x string x list (string) x list (string) x list (string)
;; [x list (string)] -> oport
;; -- sender can be anything, though spoofing is not recommended.
;; The recipients must all be pure email addresses. Note that
;; everything is expected to follow RFC conventions. If any other
;; headers are specified, they are expected to be completely
;; formatted already. Clients are urged to use close-output-port on
;; the port returned by this procedure as soon as the necessary text
;; has been written, so that the sendmail process can complete.
(define (send-mail-message/port
sender subject to-recipients cc-recipients bcc-recipients
. other-headers)
(when (and (null? to-recipients) (null? cc-recipients)
(null? bcc-recipients))
(raise (make-no-mail-recipients
"no mail recipients were specified"
(current-continuation-marks))))
(let ([return (apply process* sendmail-program-file "-i"
(append to-recipients cc-recipients bcc-recipients))])
(let ([reader (car return)]
[writer (cadr return)]
[pid (caddr return)]
[error-reader (cadddr return)])
(close-input-port reader)
(close-input-port error-reader)
(fprintf writer "From: ~a\n" sender)
(letrec ([write-recipient-header
(lambda (header-string recipients)
(let ([header-space
(+ (string-length header-string) 2)])
(fprintf writer "~a: " header-string)
(let loop ([to recipients] [indent header-space])
(if (null? to)
(newline writer)
(let ([first (car to)]
[rest (cdr to)])
(let ([len (string-length first)])
(if (>= (+ len indent) 80)
(begin
(fprintf writer
(if (null? rest)
"\n ~a"
"\n ~a, ")
first)
(loop (cdr to)
(+ len header-space 2)))
(begin
(fprintf writer
(if (null? rest)
"~a "
"~a, ")
first)
(loop (cdr to)
(+ len indent 2))))))))))])
(write-recipient-header "To" to-recipients)
(unless (null? cc-recipients)
(write-recipient-header "CC" cc-recipients)))
(fprintf writer "Subject: ~a\n" subject)
(fprintf writer "X-Mailer: Racket (racket-lang.org)\n")
(for-each (lambda (s)
(display s writer)
(newline writer))
other-headers)
(newline writer)
writer)))
;; send-mail-message :
;; string x string x list (string) x list (string) x list (string) x
;; list (string) [x list (string)] -> ()
;; -- sender can be anything, though spoofing is not recommended. The
;; recipients must all be pure email addresses. The text is expected
;; to be pre-formatted. Note that everything is expected to follow
;; RFC conventions. If any other headers are specified, they are
;; expected to be completely formatted already.
(define (send-mail-message
sender subject to-recipients cc-recipients bcc-recipients text
. other-headers)
(let ([writer (apply send-mail-message/port sender subject
to-recipients cc-recipients bcc-recipients
other-headers)])
(for-each (lambda (s)
(display s writer) ; We use -i, so "." is not a problem
(newline writer))
text)
(close-output-port writer)))
(provide sendmail@)