Moved `net/sendmail' code from unit to module.
This commit is contained in:
Jon Zeppieri
Eli Barzilay
parent
d034297c76
commit
9ab674fd0c
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@ -63,6 +63,10 @@ Raised when no mail recipients were specified for
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@section{Sendmail Unit}
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@margin-note{@racket[sendmail@] and @racket[sendmail^] are deprecated.
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They exist for backward-compatibility and will likely be removed in
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the future. New code should use the @racketmodname[net/sendmail] module.}
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@defmodule[net/sendmail-unit]
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@defthing[sendmail@ unit?]{
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@ -1,119 +1,8 @@
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#lang racket/unit
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#lang racket/base
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(require racket/system "sendmail-sig.rkt")
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(require racket/unit
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"sendmail-sig.rkt" "sendmail.rkt")
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(import)
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(export sendmail^)
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(define-unit-from-context sendmail@ sendmail^)
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(define-struct (no-mail-recipients exn) ())
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(define sendmail-search-path
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'("/usr/lib" "/usr/sbin"))
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(define sendmail-program-file
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(if (or (eq? (system-type) 'unix)
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(eq? (system-type) 'macosx))
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(let loop ([paths sendmail-search-path])
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(if (null? paths)
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(raise (make-exn:fail:unsupported
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"unable to find sendmail on this Unix variant"
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(current-continuation-marks)))
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(let ([p (build-path (car paths) "sendmail")])
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(if (and (file-exists? p)
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(memq 'execute (file-or-directory-permissions p)))
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p
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(loop (cdr paths))))))
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(raise (make-exn:fail:unsupported
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"sendmail only available under Unix"
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(current-continuation-marks)))))
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;; send-mail-message/port :
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;; string x string x list (string) x list (string) x list (string)
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;; [x list (string)] -> oport
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;; -- sender can be anything, though spoofing is not recommended.
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;; The recipients must all be pure email addresses. Note that
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;; everything is expected to follow RFC conventions. If any other
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;; headers are specified, they are expected to be completely
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;; formatted already. Clients are urged to use close-output-port on
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;; the port returned by this procedure as soon as the necessary text
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;; has been written, so that the sendmail process can complete.
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(define (send-mail-message/port
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sender subject to-recipients cc-recipients bcc-recipients
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. other-headers)
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(when (and (null? to-recipients) (null? cc-recipients)
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(null? bcc-recipients))
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(raise (make-no-mail-recipients
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"no mail recipients were specified"
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(current-continuation-marks))))
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(let ([return (apply process* sendmail-program-file "-i"
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(append to-recipients cc-recipients bcc-recipients))])
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(let ([reader (car return)]
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[writer (cadr return)]
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[pid (caddr return)]
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[error-reader (cadddr return)])
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(close-input-port reader)
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(close-input-port error-reader)
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(fprintf writer "From: ~a\n" sender)
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(letrec ([write-recipient-header
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(lambda (header-string recipients)
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(let ([header-space
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(+ (string-length header-string) 2)])
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(fprintf writer "~a: " header-string)
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(let loop ([to recipients] [indent header-space])
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(if (null? to)
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(newline writer)
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(let ([first (car to)]
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[rest (cdr to)])
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(let ([len (string-length first)])
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(if (>= (+ len indent) 80)
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(begin
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(fprintf writer
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(if (null? rest)
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"\n ~a"
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"\n ~a, ")
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first)
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(loop (cdr to)
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(+ len header-space 2)))
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(begin
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(fprintf writer
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(if (null? rest)
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"~a "
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"~a, ")
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first)
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(loop (cdr to)
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(+ len indent 2))))))))))])
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(write-recipient-header "To" to-recipients)
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(unless (null? cc-recipients)
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(write-recipient-header "CC" cc-recipients)))
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(fprintf writer "Subject: ~a\n" subject)
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(fprintf writer "X-Mailer: Racket (racket-lang.org)\n")
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(for-each (lambda (s)
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(display s writer)
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(newline writer))
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other-headers)
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(newline writer)
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writer)))
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;; send-mail-message :
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;; string x string x list (string) x list (string) x list (string) x
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;; list (string) [x list (string)] -> ()
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;; -- sender can be anything, though spoofing is not recommended. The
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;; recipients must all be pure email addresses. The text is expected
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;; to be pre-formatted. Note that everything is expected to follow
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;; RFC conventions. If any other headers are specified, they are
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;; expected to be completely formatted already.
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(define (send-mail-message
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sender subject to-recipients cc-recipients bcc-recipients text
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. other-headers)
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(let ([writer (apply send-mail-message/port sender subject
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to-recipients cc-recipients bcc-recipients
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other-headers)])
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(for-each (lambda (s)
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(display s writer) ; We use -i, so "." is not a problem
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(newline writer))
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text)
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(close-output-port writer)))
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(provide sendmail@)
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@ -1,6 +1,120 @@
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#lang racket/base
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(require racket/unit "sendmail-sig.rkt" "sendmail-unit.rkt")
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(define-values/invoke-unit/infer sendmail@)
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(require racket/system)
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(provide-signature-elements sendmail^)
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(provide send-mail-message/port
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send-mail-message
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(struct-out no-mail-recipients))
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(define-struct (no-mail-recipients exn) ())
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(define sendmail-search-path
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'("/usr/lib" "/usr/sbin"))
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(define sendmail-program-file
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(if (or (eq? (system-type) 'unix)
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(eq? (system-type) 'macosx))
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(let loop ([paths sendmail-search-path])
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(if (null? paths)
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(raise (make-exn:fail:unsupported
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"unable to find sendmail on this Unix variant"
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(current-continuation-marks)))
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(let ([p (build-path (car paths) "sendmail")])
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(if (and (file-exists? p)
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(memq 'execute (file-or-directory-permissions p)))
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p
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(loop (cdr paths))))))
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(raise (make-exn:fail:unsupported
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"sendmail only available under Unix"
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(current-continuation-marks)))))
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;; send-mail-message/port :
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;; string x string x list (string) x list (string) x list (string)
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;; [x list (string)] -> oport
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;; -- sender can be anything, though spoofing is not recommended.
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;; The recipients must all be pure email addresses. Note that
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;; everything is expected to follow RFC conventions. If any other
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;; headers are specified, they are expected to be completely
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;; formatted already. Clients are urged to use close-output-port on
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;; the port returned by this procedure as soon as the necessary text
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;; has been written, so that the sendmail process can complete.
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(define (send-mail-message/port
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sender subject to-recipients cc-recipients bcc-recipients
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. other-headers)
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(when (and (null? to-recipients) (null? cc-recipients)
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(null? bcc-recipients))
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(raise (make-no-mail-recipients
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"no mail recipients were specified"
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(current-continuation-marks))))
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(let ([return (apply process* sendmail-program-file "-i"
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(append to-recipients cc-recipients bcc-recipients))])
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(let ([reader (car return)]
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[writer (cadr return)]
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[pid (caddr return)]
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[error-reader (cadddr return)])
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(close-input-port reader)
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(close-input-port error-reader)
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(fprintf writer "From: ~a\n" sender)
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(letrec ([write-recipient-header
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(lambda (header-string recipients)
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(let ([header-space
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(+ (string-length header-string) 2)])
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(fprintf writer "~a: " header-string)
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(let loop ([to recipients] [indent header-space])
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(if (null? to)
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(newline writer)
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(let ([first (car to)]
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[rest (cdr to)])
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(let ([len (string-length first)])
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(if (>= (+ len indent) 80)
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(begin
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(fprintf writer
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(if (null? rest)
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"\n ~a"
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"\n ~a, ")
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first)
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(loop (cdr to)
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(+ len header-space 2)))
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(begin
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(fprintf writer
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(if (null? rest)
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"~a "
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"~a, ")
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first)
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(loop (cdr to)
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(+ len indent 2))))))))))])
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(write-recipient-header "To" to-recipients)
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(unless (null? cc-recipients)
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(write-recipient-header "CC" cc-recipients)))
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(fprintf writer "Subject: ~a\n" subject)
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(fprintf writer "X-Mailer: Racket (racket-lang.org)\n")
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(for-each (lambda (s)
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(display s writer)
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(newline writer))
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other-headers)
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(newline writer)
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writer)))
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;; send-mail-message :
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;; string x string x list (string) x list (string) x list (string) x
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;; list (string) [x list (string)] -> ()
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;; -- sender can be anything, though spoofing is not recommended. The
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;; recipients must all be pure email addresses. The text is expected
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;; to be pre-formatted. Note that everything is expected to follow
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;; RFC conventions. If any other headers are specified, they are
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;; expected to be completely formatted already.
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(define (send-mail-message
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sender subject to-recipients cc-recipients bcc-recipients text
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. other-headers)
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(let ([writer (apply send-mail-message/port sender subject
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to-recipients cc-recipients bcc-recipients
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other-headers)])
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(for-each (lambda (s)
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(display s writer) ; We use -i, so "." is not a problem
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(newline writer))
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text)
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(close-output-port writer)))
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