mime-mail (empty) → 0.0.0

raw patch · 4 files changed

+298/−0 lines, 4 filesdep +basedep +blaze-builderdep +bytestringsetup-changed

Dependencies added: base, blaze-builder, bytestring, dataenc, process, random, text

Files

• LICENSE +30/−0
• Network/Mail/Mime.hs +232/−0
• Setup.lhs +7/−0
• mime-mail.cabal +29/−0

@@ -0,0 +1,30 @@+Copyright (c)2010, Michael Snoyman++All rights reserved.++Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are met:++    * Redistributions of source code must retain the above copyright+      notice, this list of conditions and the following disclaimer.++    * Redistributions in binary form must reproduce the above+      copyright notice, this list of conditions and the following+      disclaimer in the documentation and/or other materials provided+      with the distribution.++    * Neither the name of Michael Snoyman nor the names of other+      contributors may be used to endorse or promote products derived+      from this software without specific prior written permission.++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

@@ -0,0 +1,232 @@+{-# LANGUAGE OverloadedStrings #-}+module Network.Mail.Mime+    ( -- * Datatypes+      Boundary (..)+    , Mail (..)+    , Alternatives+    , Part (..)+    , Encoding (..)+      -- * Render a message+    , renderMail+    , renderMail'+      -- * Sending messages+    , sendmail+    , renderSendMail+      -- * High-level 'Mail' creation+    , simpleMail+      -- * Utilities+    , randomString+    ) where++import qualified Data.ByteString.Lazy as L+import Text.Blaze.Builder.Utf8+import Text.Blaze.Builder.Core+import Data.Monoid+import System.Random+import Control.Arrow+import System.Process+import System.IO+import System.Exit+import Codec.Binary.Base64 (encode)+import Control.Monad ((<=<), forM)+import Data.List (intersperse)+import qualified Data.Text.Lazy as LT+import qualified Data.Text.Lazy.Encoding as LT++-- | Generates a random sequence of alphanumerics of the given length.+randomString :: RandomGen d => Int -> d -> (String, d)+randomString len =+    first (map toChar) . sequence' (replicate len (randomR (0, 61)))+  where+    sequence' [] g = ([], g)+    sequence' (f:fs) g =+        let (f', g') = f g+            (fs', g'') = sequence' fs g'+         in (f' : fs', g'')+    toChar i+        | i < 26 = toEnum $ i + fromEnum 'A'+        | i < 52 = toEnum $ i + fromEnum 'a' - 26+        | otherwise = toEnum $ i + fromEnum '0' - 52++-- | MIME boundary between parts of a message.+newtype Boundary = Boundary { unBoundary :: String }+instance Random Boundary where+    randomR = const random+    random = first Boundary . randomString 10++-- | An entire mail message.+data Mail = Mail+    { mailHeaders :: [(String, String)] -- ^ All headers, including to, from subject.+    -- | A list of different sets of alternatives. As a concrete example:+    --+    -- > mailParts = [ [textVersion, htmlVersion], [attachment1], [attachment1]]+    --+    -- Make sure when specifying alternatives to place the most preferred+    -- version last.+    , mailParts :: [Alternatives]+    }++-- | How to encode a single part. You should use 'Base64' for binary data.+data Encoding = None | Base64++-- | Multiple alternative representations of the same data. For example, you+-- could provide a plain-text and HTML version of a message.+type Alternatives = [Part]++-- | A single part of a multipart message.+data Part = Part+    { partType :: String -- ^ content type+    , partEncoding :: Encoding+    -- | The filename for this part, if it is to be sent with an attachemnt+    -- disposition.+    , partFilename :: Maybe String+    , partContent :: L.ByteString+    }++type Headers = [(String, String)]+type Pair = (Headers, Builder)++partToPair :: Part -> Pair+partToPair (Part contentType encoding disposition content) =+    (headers, builder)+  where+    headers =+        ((:) ("Content-Type", contentType))+      $ (case encoding of+            None -> id+            Base64 -> (:) ("Content-Transfer-Encoding", "base64"))+      $ (case disposition of+            Nothing -> id+            Just fn ->+                (:) ("Content-Disposition", "attachment; filename=" ++ fn))+      $ []+    builder =+        case encoding of+            None -> writeList writeByteString $ L.toChunks content+            Base64 -> writeList writeByte $ map (toEnum . fromEnum)+                    $ encode $ L.unpack content++showPairs :: RandomGen g+          => String -- ^ multipart type, eg mixed, alternative+          -> [Pair]+          -> g+          -> (Pair, g)+showPairs _ [] _ = error "renderParts called with null parts"+showPairs _ [pair] gen = (pair, gen)+showPairs mtype parts gen =+    ((headers, builder), gen')+  where+    (Boundary b, gen') = random gen+    headers =+        [ ("Content-Type", concat+            [ "multipart/"+            , mtype+            , "; boundary=\""+            , b+            , "\""+            ])+        ]+    builder = mconcat+        [ mconcat $ intersperse (fromByteString "\n")+                  $ map (showBoundPart $ Boundary b) parts+        , showBoundEnd $ Boundary b+        ]++-- | Render a 'Mail' with a given 'RandomGen' for producing boundaries.+renderMail :: RandomGen g => g -> Mail -> (L.ByteString, g)+renderMail g0 (Mail headers parts) =+    (toLazyByteString builder, g'')+  where+    pairs = map (map partToPair) parts+    (pairs', g') = helper g0 $ map (showPairs "alternative") pairs+    helper :: g -> [g -> (x, g)] -> ([x], g)+    helper g [] = ([], g)+    helper g (x:xs) =+        let (b, g') = x g+            (bs, g'') = helper g' xs+         in (b : bs, g'')+    ((finalHeaders, finalBuilder), g'') = showPairs "mixed" pairs' g'+    builder = mconcat+        [ mconcat $ map showHeader headers+        , showHeader ("MIME-Version", "1.0")+        , mconcat $ map showHeader finalHeaders+        , fromByteString "\n"+        , finalBuilder+        ]++showHeader (k, v) = mconcat+    [ fromString k+    , fromByteString ": "+    , fromString v+    , fromByteString "\n"+    ]++showBoundPart (Boundary b) (headers, content) = mconcat+    [ fromByteString "--"+    , fromString b+    , fromByteString "\n"+    , mconcat $ map showHeader headers+    , fromByteString "\n"+    , content+    ]++showBoundEnd (Boundary b) = mconcat+    [ fromByteString "\n--"+    , fromString b+    , fromByteString "--"+    ]++-- | Like 'renderMail', but generates a random boundary.+renderMail' :: Mail -> IO L.ByteString+renderMail' m = do+    g <- getStdGen+    let (lbs, g') = renderMail g m+    setStdGen g'+    return lbs++-- | Send a fully-formed email message via the sendmail executable.+sendmail :: L.ByteString -> IO ()+sendmail lbs = do+    (Just hin, _, _, phandle) <- createProcess $ (proc+        "/usr/sbin/sendmail" ["-t"]) { std_in = CreatePipe }+    L.hPut hin lbs+    hClose hin+    exitCode <- waitForProcess phandle+    case exitCode of+        ExitSuccess -> return ()+        _ -> error $ "sendmail exited with error code " ++ show exitCode++-- | Render an email message and send via 'sendmail'.+renderSendMail :: Mail -> IO ()+renderSendMail = sendmail <=< renderMail'++-- | A simple interface for generating an email with HTML and plain-text+-- alternatives and some file attachments.+--+-- Note that we use lazy IO for reading in the attachment contents.+simpleMail :: String -- ^ to+           -> String -- ^ from+           -> String -- ^ subject+           -> LT.Text -- ^ plain body+           -> LT.Text -- ^ HTML body+           -> [(String, FilePath)] -- ^ content type and path of attachments+           -> IO Mail+simpleMail to from subject plainBody htmlBody attachments = do+    as <- forM attachments $ \(ct, fn) -> do+        content <- L.readFile fn+        return (ct, fn, content)+    return Mail {+        mailHeaders =+            [ ("To", to)+            , ("From", from)+            , ("Subject", subject)+            ]+        , mailParts =+            [ Part "text/plain; charset=utf-8" None Nothing+            $ LT.encodeUtf8 plainBody+            , Part "text/html; charset=utf-8" None Nothing+            $ LT.encodeUtf8 htmlBody+            ] :+            (map (\(ct, fn, content) -> [Part ct Base64 (Just fn) content])+                              as)+        }

@@ -0,0 +1,7 @@+#!/usr/bin/env runhaskell++> module Main where+> import Distribution.Simple++> main :: IO ()+> main = defaultMain

@@ -0,0 +1,29 @@+Name:                mime-mail+Version:             0.0.0+Synopsis:            Compose MIME email messages.+Description:         This package provides some high-level datatypes for declaring MIME email messages, functions for automatically composing these into bytestrings, and the ability to send bytestrings via the sendmail executable. You can also use any other library you wish to send via different methods, eg directly to SMTP.+Homepage:            http://github.com/snoyberg/mime-mail+License:             BSD3+License-file:        LICENSE+Author:              Michael Snoyman <michael@snoyman.com>+Maintainer:          Michael Snoyman <michael@snoyman.com>+Category:            Email+Build-type:          Simple++-- Constraint on the version of Cabal needed to build this package.+Cabal-version:       >=1.6+++Library+  Exposed-modules: Network.Mail.Mime+  Build-depends:   base                >= 4          && < 5+                 , dataenc             >= 0.13.0.4   && < 0.14+                 , process             >= 1.0        && < 1.1+                 , random              >= 1.0        && < 1.1+                 , blaze-builder       >= 0.1        && < 0.2+                 , bytestring          >= 0.9.1      && < 0.10+                 , text                >= 0.7        && < 0.10++source-repository head+  type:     git+  location: git://github.com/snoyberg/mime-mail.git