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authorSergey Poznyakoff <gray@gnu.org.ua>2002-04-19 12:31:22 +0000
committerSergey Poznyakoff <gray@gnu.org.ua>2002-04-19 12:31:22 +0000
commit6fab28ed5d7022c5ef248b849996e6296b113d6f (patch)
tree238c87de741305b67528ec17a6b5e3a4d181c90f /guimb
parent9c0caf82fe4e87624c395060e9f6a607d4ebef34 (diff)
downloadmailutils-6fab28ed5d7022c5ef248b849996e6296b113d6f.tar.gz
mailutils-6fab28ed5d7022c5ef248b849996e6296b113d6f.tar.bz2
Implements "mimeheader" extension test. The test is similar to
"header" but works on multipart MIME messages also.
Diffstat (limited to 'guimb')
-rw-r--r--guimb/scm/mimeheader.scm83
1 files changed, 83 insertions, 0 deletions
diff --git a/guimb/scm/mimeheader.scm b/guimb/scm/mimeheader.scm
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+;;;; GNU mailutils - a suite of utilities for electronic mail
+;;;; Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+;;;;
+;;;; This program is free software; you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation; either version 2, or (at your option)
+;;;; any later version.
+;;;;
+;;;; This program is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with this program; if not, write to the Free Software
+;;;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;;; This module provides GNU extension test "mimeheader".
+
+;;;; Syntax: mimeheader [COMPARATOR] [MATCH-TYPE]
+;;;; <header-names: string-list> <key-list: string-list>
+;;;;
+;;;; The "mimeheader" test evaluates to true if in any part of the
+;;;; multipart MIME message a header name from <header-names> list
+;;;; matches any key from <key-list>. If the message is not multipart,
+;;;; "mimeheader" test is equivalent to "header" test.
+;;;;
+;;;; The arguments to "mimeheader" test are the same as to "header" test.
+
+;;;; Example:
+;;;;
+;;;; require [ "mimeheader", "reject"];
+;;;; if mimeheader :matches "Content-Type" "*application/msword;*" {
+;;;; reject "Please do not send data in a proprietary format.";
+;;;; }
+
+(define (test-mimeheader header-list key-list . opt-args)
+ (if (mu-message-multipart? sieve-current-message)
+ (let ((mime-count (mu-message-get-num-parts sieve-current-message))
+ (comp (find-comp opt-args))
+ (match (find-match opt-args)))
+ (call-with-current-continuation
+ (lambda (exit)
+ (do ((n 1 (1+ n)))
+ ((> n mime-count) #f)
+ (let ((msg (mu-message-get-part sieve-current-message n)))
+ (if msg
+ (for-each
+ (lambda (key)
+ (let ((header-fields (mu-message-get-header-fields
+ msg
+ header-list))
+ (rx (if (eq? match #:matches)
+ (make-regexp (sieve-regexp-to-posix key)
+ (if (eq? comp string-ci=?)
+ regexp/icase
+ '()))
+ #f)))
+ (for-each
+ (lambda (h)
+ (let ((hdr (cdr h)))
+ (if hdr
+ (case match
+ ((#:is)
+ (if (comp hdr key)
+ (exit #t)))
+ ((#:contains)
+ (if (sieve-str-str hdr key comp)
+ (exit #t)))
+ ((#:matches)
+ (if (regexp-exec rx hdr)
+ (exit #t)))))))
+ header-fields)))
+ key-list)
+ #f))))))
+ (apply test-header header-list key-list opt-args)))
+
+;;; Register the test at compile time
+(if sieve-parser
+ (sieve-register-test "mimeheader"
+ test-mimeheader
+ (append comparator match-type)
+ (list 'string-list 'string-list)))

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