diff --git a/DAV.cabal b/DAV.cabal new file mode 100644 --- /dev/null +++ b/DAV.cabal @@ -0,0 +1,55 @@ +name: DAV +version: 0.0 +synopsis: RFC 4918 WebDAV support +description: + This is a library for the Web Distributed Authoring and Versioning + (WebDAV) extensions to HTTP. At present it supports a very small + subset of client functionality. + . + In addition, there is an executable, hdav, which can be used for + command-line operation. + +homepage: http://floss.scru.org/hDAV +bug-reports: mailto:clint@debian.org +license: GPL-3 +license-file: LICENSE +author: Clint Adams +maintainer: clint@debian.org +copyright: Copyright (C) 2012 Clint Adams +category: Web +build-type: Simple +cabal-version: >=1.8 + +library + exposed-modules: Network.Protocol.HTTP.DAV + other-modules: Network.Protocol.HTTP.DAV.TH + ghc-options: -Wall + build-depends: base ==4.5.* + , bytestring + , case-insensitive >= 0.4 + , http-conduit >= 1.4 + , http-types >= 0.6 + , lens >= 2.4 + , lifted-base >= 0.1 + , mtl >= 2.1 + , resourcet >= 0.3 + , transformers >= 0.3 + , xml-conduit >= 0.7 && <= 0.7.0.3 + , xml-hamlet >= 0.3 && <= 0.3.0.1 +executable hdav + main-is: hdav.hs + ghc-options: -Wall + build-depends: base ==4.5.* + , bytestring + , case-insensitive >= 0.4 + , cmdargs >= 0.9 + , http-conduit >= 1.4 + , http-types >= 0.6 + , lens >= 2.4 + , lifted-base >= 0.1 + , mtl >= 2.1 + , network >= 2.3 + , resourcet >= 0.3 + , transformers >= 0.3 + , xml-conduit >= 0.7 && <= 0.7.0.3 + , xml-hamlet >= 0.3 && <= 0.3.0.1 diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,675 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + diff --git a/Network/Protocol/HTTP/DAV.hs b/Network/Protocol/HTTP/DAV.hs new file mode 100644 --- /dev/null +++ b/Network/Protocol/HTTP/DAV.hs @@ -0,0 +1,190 @@ +-- DAV.hs: WebDAV client library +-- Copyright © 2012 Clint Adams +-- +-- 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 3 of the License, 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, see . + +{-# LANGUAGE OverloadedStrings, ConstraintKinds, FlexibleContexts, QuasiQuotes #-} + +module Network.Protocol.HTTP.DAV ( + DAVState + , DAVContext(..) + , getPropsAndContent + , putContentAndProps + , module Network.Protocol.HTTP.DAV.TH +) where + +import Network.Protocol.HTTP.DAV.TH + +import Control.Applicative (liftA2) +import Control.Exception.Lifted (catchJust, finally) +import Control.Lens ((.~), (^.)) +import Control.Monad (when) +import Control.Monad.Trans (lift) +import Control.Monad.Trans.Resource (MonadResourceBase, ResourceT, runResourceT, allocate) +import Control.Monad.Trans.State.Lazy (evalStateT, StateT, get, modify) + +import qualified Data.ByteString as B +import qualified Data.ByteString.Lazy as BL + +import Data.Maybe (fromMaybe) + +import Network.HTTP.Conduit (httpLbs, parseUrl, applyBasicAuth, Request(..), RequestBody(..), Response(..), newManager, closeManager, ManagerSettings(..), def, HttpException(..)) +import Network.HTTP.Types (headerContentType, Method, RequestHeaders, unauthorized401) + +import qualified Text.XML as XML +import Text.XML.Cursor (($/), (&/), element, node, fromDocument, checkName) +import Text.Hamlet.XML (xml) + +import Data.CaseInsensitive (mk) + +type DAVState m a = StateT (DAVContext m) (ResourceT m) a + +initialDS :: String -> B.ByteString -> B.ByteString -> ManagerSettings -> IO (DAVContext a) +initialDS u username password s = do + mgr <- newManager s + req <- parseUrl u + return $ DAVContext [] req [] mgr Nothing username password + +closeDS :: DAVContext a -> IO () +closeDS = closeManager . _httpManager + +withDS :: MonadResourceBase m => String -> B.ByteString -> B.ByteString -> DAVState m a -> m a +withDS url username password f = runResourceT $ do + (_, ds) <- allocate (initialDS url username password def) closeDS + evalStateT f ds + +davRequest :: MonadResourceBase m => Method -> RequestHeaders -> RequestBody (ResourceT m) -> DAVState m (Response BL.ByteString) +davRequest meth addlhdrs rbody = do + ctx <- get + let req = (ctx ^. baseRequest) { method = meth, requestHeaders = (mk "User-Agent", "hDav 9.0"):addlhdrs, requestBody = rbody } + let authreq = applyBasicAuth (ctx ^. basicusername) (ctx ^. basicpassword) req + resp <- lift (catchJust (is401Exception) + (httpLbs req (ctx ^. httpManager)) + (\_ -> httpLbs authreq (ctx ^. httpManager))) + return resp + +is401Exception :: HttpException -> Maybe () +is401Exception (StatusCodeException s _) = if s == unauthorized401 then Just () else Nothing +is401Exception _ = Nothing + +emptyBody :: RequestBody m +emptyBody = RequestBodyLBS BL.empty + +xmlBody :: XML.Document -> RequestBody m +xmlBody = RequestBodyLBS . XML.renderLBS XML.def + +getOptions :: MonadResourceBase m => DAVState m () +getOptions = do + optresp <- davRequest "OPTIONS" [] emptyBody + let meths = (B.splitWith (==(fromIntegral . fromEnum) ',') . fromMaybe B.empty . lookup "Allow" . responseHeaders) optresp + let cclass = (B.splitWith (==(fromIntegral . fromEnum) ',') . fromMaybe B.empty . lookup "DAV" . responseHeaders) optresp + modify (complianceClasses .~ cclass) + modify (allowedMethods .~ meths) + +lockResource :: MonadResourceBase m => Bool -> DAVState m () +lockResource nocreate = do + let ahs' = [headerContentType "application/xml; charset=\"utf-8\"", (mk "Depth", "0"), (mk "Timeout", "Second-300")] + let ahs = if nocreate then (mk "If-Match", "*"):ahs' else ahs' + lockresp <- davRequest "LOCK" ahs (xmlBody locky) + let hdrtoken = (lookup "Lock-Token" . responseHeaders) lockresp + modify (lockToken .~ hdrtoken) + +unlockResource :: MonadResourceBase m => DAVState m () +unlockResource = do + d <- get + case _lockToken d of + Nothing -> return () + Just tok -> do let ahs = [(mk "Lock-Token", tok)] + _ <- davRequest "UNLOCK" ahs emptyBody + modify (lockToken .~ Nothing) + +supportsLocking :: DAVContext a -> Bool +supportsLocking = liftA2 (&&) ("LOCK" `elem`) ("UNLOCK" `elem`) . _allowedMethods + +getAllProps :: MonadResourceBase m => DAVState m XML.Document +getAllProps = do + let ahs = [headerContentType "application/xml; charset=\"utf-8\""] + propresp <- davRequest "PROPFIND" ahs (xmlBody propname) + return $ (XML.parseLBS_ def . responseBody) propresp + +getContent :: MonadResourceBase m => DAVState m (Maybe B.ByteString, BL.ByteString) +getContent = do + resp <- davRequest "GET" [] emptyBody + let ct = lookup (mk "Content-Type") (responseHeaders resp) + return $ (ct, responseBody resp) + +putContent :: MonadResourceBase m => (Maybe B.ByteString, BL.ByteString) -> DAVState m () +putContent (ct, body) = do + d <- get + let ahs' = fromMaybe [] (fmap (return . (,) (mk "If") . parenthesize) (d ^. lockToken)) + let ahs = ahs' ++ fromMaybe [] (fmap (return . (,) (mk "Content-Type")) ct) + _ <- davRequest "PUT" ahs (RequestBodyLBS body) + return () + +parenthesize :: B.ByteString -> B.ByteString +parenthesize x = B.concat ["(", x, ")"] + +putProps :: MonadResourceBase m => XML.Document -> DAVState m () +putProps props = do + d <- get + let ah' = headerContentType "application/xml; charset=\"utf-8\"" + let ahs = ah':fromMaybe [] (fmap (return . (,) (mk "If") . parenthesize) (_lockToken d)) + _ <- davRequest "PROPPATCH" ahs ((RequestBodyLBS . props2patch) props) -- FIXME: should diff and remove props from target + return () + +props2patch :: XML.Document -> BL.ByteString +props2patch = XML.renderLBS XML.def . patch . props . fromDocument + where + props cursor = map node (cursor $/ element "{DAV:}response" &/ element "{DAV:}propstat" &/ element "{DAV:}prop" &/ checkName (not . flip elem ["{DAV:}creationdate", "{DAV:}displayname", "{DAV:}getcontentlength", "{DAV:}getcontenttype", "{DAV:}getetag", "{DAV:}getlastmodified", "{DAV:}lockdiscovery", "{DAV:}resourcetype", "{DAV:}supportedlock"])) + patch prop = XML.Document (XML.Prologue [] Nothing []) (root prop) [] + root prop = XML.Element "D:propertyupdate" [("xmlns:D", "DAV:")] + [ XML.NodeElement $ XML.Element "D:set" [] + [ XML.NodeElement $ XML.Element "D:prop" [] prop ] + ] + +getPropsAndContent :: String -> B.ByteString -> B.ByteString -> IO (XML.Document, (Maybe B.ByteString, BL.ByteString)) +getPropsAndContent url username password = withDS url username password $ do + getOptions + o <- get + when (supportsLocking o) (lockResource True) + (do props <- getAllProps + body <- getContent + return (props, body)) `finally` when (supportsLocking o) (unlockResource) + +putContentAndProps :: String -> B.ByteString -> B.ByteString -> (XML.Document, (Maybe B.ByteString, BL.ByteString)) -> IO () +putContentAndProps url username password (p, b) = withDS url username password $ do + getOptions + o <- get + when (supportsLocking o) (lockResource False) + (do putContent b + putProps p) `finally` when (supportsLocking o) (unlockResource) + +propname :: XML.Document +propname = XML.Document (XML.Prologue [] Nothing []) root [] + where + root = XML.Element "D:propfind" [("xmlns:D", "DAV:")] [xml| + +|] + +locky :: XML.Document +locky = XML.Document (XML.Prologue [] Nothing []) root [] + where + root = XML.Element "D:lockinfo" [("xmlns:D", "DAV:")] [xml| + + + + +Haskell DAV user +|] + diff --git a/Network/Protocol/HTTP/DAV/TH.hs b/Network/Protocol/HTTP/DAV/TH.hs new file mode 100644 --- /dev/null +++ b/Network/Protocol/HTTP/DAV/TH.hs @@ -0,0 +1,34 @@ +-- TH.hs: WebDAV client library - bits using TH +-- Copyright © 2012 Clint Adams +-- +-- 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 3 of the License, 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, see . + +{-# LANGUAGE TemplateHaskell #-} + +module Network.Protocol.HTTP.DAV.TH where + +import Control.Lens (makeLenses) +import qualified Data.ByteString as B +import Network.HTTP.Conduit (Manager, Request) + +data DAVContext a = DAVContext { + _allowedMethods :: [B.ByteString] + , _baseRequest :: Request a + , _complianceClasses :: [B.ByteString] + , _httpManager :: Manager + , _lockToken :: Maybe B.ByteString + , _basicusername :: B.ByteString + , _basicpassword :: B.ByteString +} +makeLenses ''DAVContext diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/hdav.hs b/hdav.hs new file mode 100644 --- /dev/null +++ b/hdav.hs @@ -0,0 +1,71 @@ +-- hdav.hs: WebDAV client +-- Copyright © 2012 Clint Adams +-- +-- 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 3 of the License, 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, see . + +import qualified Data.ByteString.Char8 as BC8 + +import Data.Maybe (fromMaybe, fromJust) + +import Network (withSocketsDo) + +import qualified System.Console.CmdArgs.Explicit as CA + +import Network.Protocol.HTTP.DAV (getPropsAndContent, putContentAndProps) + +doCopy :: [(String, String)] -> IO () +doCopy as = do + let url1 = fromJust . lookup "sourceurl" $ as + let url2 = fromJust . lookup "targeturl" $ as + let sourceUsername = BC8.pack . fromMaybe "" . lookup "source-username" $ as + let sourcePassword = BC8.pack . fromMaybe "" . lookup "source-password" $ as + let targetUsername = BC8.pack . fromMaybe "" . lookup "target-username" $ as + let targetPassword = BC8.pack . fromMaybe "" . lookup "target-password" $ as + (p, b) <- getPropsAndContent url1 sourceUsername sourcePassword + putContentAndProps url2 targetUsername targetPassword (p, b) + +dispatch :: String -> [(String, String)] -> IO () +dispatch m as + | m == "copy" = doCopy as + | otherwise = fail "Unexpected condition." + +showHelp :: IO () +showHelp = print $ CA.helpText [] CA.HelpFormatDefault arguments + +main :: IO () +main = withSocketsDo $ do + putStrLn "hDAV version 0.0.0, Copyright (C) 2012 Clint Adams\n\ + \hDAV comes with ABSOLUTELY NO WARRANTY.\n\ + \This is free software, and you are welcome to redistribute it\n\ + \under certain conditions.\n\n" + + as <- CA.processArgs arguments + if ("help","") `elem` as then showHelp else dispatch' as + + where dispatch' as = case lookup "mode" as of + Nothing -> showHelp + Just m -> dispatch m as + +arguments :: CA.Mode [(String,String)] +arguments = CA.modes "hdav" [] "hdav WebDAV client" [ + (CA.mode "copy" [("mode", "copy")] "copy" (CA.flagArg (upd "sourceurl") "SOURCEURL") [ + CA.flagReq ["source-username"] (upd "source-username") "USERNAME" "username for source URL" + , CA.flagReq ["source-password"] (upd "source-password") "PASSWORD" "password for source URL" + , CA.flagReq ["target-username"] (upd "target-username") "USERNAME" "username for target URL" + , CA.flagReq ["target-password"] (upd "target-password") "PASSWORD" "password for target URL" + , CA.flagHelpSimple (("help",""):)]) { CA.modeArgs = ([(CA.flagArg (upd "sourceurl") "SOURCEURL") { CA.argRequire = True }, (CA.flagArg (upd "targeturl") "TARGETURL") { CA.argRequire = True }], Nothing) } + ] + where upd msg x v = Right $ (msg,x):v + +-- vim: set softtabstop=4 shiftwidth=4 expandtab