network-protocol-xmpp (empty) → 0.1
raw patch · 10 files changed
+1595/−0 lines, 10 filesdep +basedep +gsasldep +hsgnutlssetup-changed
Dependencies added: base, gsasl, hsgnutls, hxt, libxml-sax, network
Files
- License.txt +674/−0
- Network/Protocol/XMPP.hs +25/−0
- Network/Protocol/XMPP/Client.hs +115/−0
- Network/Protocol/XMPP/JID.hs +111/−0
- Network/Protocol/XMPP/SASL.hs +101/−0
- Network/Protocol/XMPP/Stanzas.hs +198/−0
- Network/Protocol/XMPP/Stream.hs +245/−0
- Network/Protocol/XMPP/Util.hs +97/−0
- Setup.hs +2/−0
- network-protocol-xmpp.cabal +27/−0
+ License.txt view
@@ -0,0 +1,674 @@+ GNU GENERAL PUBLIC LICENSE+ Version 3, 29 June 2007++ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>+ 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. By contrast,+the GNU General Public License is intended to guarantee your freedom to+share and change all versions of a program--to make sure it remains free+software for all its users. We, the Free Software Foundation, use the+GNU General Public License for most of our software; it applies also to+any other work released this way by its authors. You can apply it to+your programs, too.++ When we speak of free software, we are referring to freedom, not+price. 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+ Network/Protocol/XMPP.hs view
@@ -0,0 +1,25 @@+{- Copyright (C) 2009 John Millikin <jmillikin@gmail.com>+ + 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+ 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 <http://www.gnu.org/licenses/>.+-}++module Network.Protocol.XMPP (+ module Network.Protocol.XMPP.JID+ ,module Network.Protocol.XMPP.Client+ ,module Network.Protocol.XMPP.Stanzas+ ) where++import Network.Protocol.XMPP.JID+import Network.Protocol.XMPP.Client+import Network.Protocol.XMPP.Stanzas
+ Network/Protocol/XMPP/Client.hs view
@@ -0,0 +1,115 @@+{- Copyright (C) 2009 John Millikin <jmillikin@gmail.com>+ + 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+ 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 <http://www.gnu.org/licenses/>.+-}++module Network.Protocol.XMPP.Client (+ ConnectedClient+ ,Client+ ,clientConnect+ ,clientAuthenticate+ ,clientBind+ ,clientJID+ ,clientServerJID+ ,putTree+ ,getTree+ ,putStanza+ ) where++import Network (HostName, PortID, connectTo)+import Text.XML.HXT.Arrow ((>>>))+import qualified Text.XML.HXT.Arrow as A+import Text.XML.HXT.DOM.TypeDefs (XmlTree)+import qualified Text.XML.HXT.DOM.XmlNode as XN++import Network.Protocol.XMPP.JID (JID, jidParse, jidResource)+import qualified Network.Protocol.XMPP.SASL as SASL+import qualified Network.Protocol.XMPP.Stream as S+import Network.Protocol.XMPP.Util (mkElement, mkQName)+import Network.Protocol.XMPP.Stanzas (Stanza, stanzaXML)++data ConnectedClient = ConnectedClient JID S.Stream++data Client = Client {+ clientJID :: JID+ ,clientServerJID :: JID+ ,clientStream :: S.Stream+ }++type Username = String+type Password = String++clientConnect :: JID -> HostName -> PortID -> IO ConnectedClient+clientConnect jid host port = do+ handle <- connectTo host port+ stream <- S.beginStream jid handle+ return $ ConnectedClient jid stream++clientAuthenticate :: ConnectedClient -> JID -> Username -> Password -> IO Client+clientAuthenticate (ConnectedClient serverJID stream) jid username password = do+ authed <- SASL.authenticate stream jid serverJID username password+ case authed of+ SASL.Failure -> error "Authentication failure"+ _ -> do+ newStream <- S.restartStream stream+ return $ Client jid serverJID newStream++clientBind :: Client -> IO JID+clientBind c = do+ -- Bind+ let resourceElements = case jidResource . clientJID $ c of+ "" -> []+ resource ->+ [mkElement ("", "resource")+ []+ [XN.mkText resource]]+ + putTree c $ mkElement ("", "iq")+ [("", "type", "set")]+ [mkElement ("", "bind")+ [("", "xmlns", "urn:ietf:params:xml:ns:xmpp-bind")]+ resourceElements]+ + bindResult <- getTree c+ let [rawJID] = A.runLA (+ A.deep (A.hasQName (mkQName "urn:ietf:params:xml:ns:xmpp-bind" "jid"))+ >>> A.getChildren+ >>> A.getText) bindResult+ let jid = case jidParse rawJID of+ Just x -> x+ _ -> error "Couldn't parse server's returned JID"+ + -- Session+ putTree c $ mkElement ("", "iq")+ [("", "type", "set")]+ [mkElement ("", "session")+ [("", "xmlns", "urn:ietf:params:xml:ns:xmpp-session")]+ []]+ + getTree c+ + putTree c $ mkElement ("", "presence") [] []+ getTree c+ return jid++-------------------------------------------------------------------------------++putTree :: Client -> XmlTree -> IO ()+putTree = S.putTree . clientStream++getTree :: Client -> IO XmlTree+getTree = S.getTree . clientStream++putStanza :: (Stanza a) => Client -> a -> IO ()+putStanza c = (putTree c) . stanzaXML
+ Network/Protocol/XMPP/JID.hs view
@@ -0,0 +1,111 @@+{- Copyright (C) 2009 John Millikin <jmillikin@gmail.com>+ + 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+ 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 <http://www.gnu.org/licenses/>.+-}++module Network.Protocol.XMPP.JID (+ JID(..)+ ,JIDNode+ ,JIDDomain+ ,JIDResource+ + ,jidNodeStr+ ,jidDomainStr+ ,jidResourceStr+ + ,mkJIDNode+ ,mkJIDDomain+ ,mkJIDResource+ ,mkJID+ + ,jidNode+ ,jidDomain+ ,jidResource+ + ,jidParse+ ,jidFormat+ ) where++data JID = JID (Maybe JIDNode) JIDDomain (Maybe JIDResource)+ deriving (Eq, Show)++newtype JIDNode = JIDNode String+ deriving (Eq, Show)+ +newtype JIDDomain = JIDDomain String+ deriving (Eq, Show)+ +newtype JIDResource = JIDResource String+ deriving (Eq, Show)++jidNodeStr :: JIDNode -> String+jidNodeStr (JIDNode s) = s++jidDomainStr :: JIDDomain -> String+jidDomainStr (JIDDomain s) = s++jidResourceStr :: JIDResource -> String+jidResourceStr (JIDResource s) = s++mkJIDNode :: String -> Maybe JIDNode+mkJIDNode "" = Nothing+mkJIDNode s = Just (JIDNode s) -- TODO: stringprep, validation++mkJIDDomain :: String -> Maybe JIDDomain+mkJIDDomain "" = Nothing+mkJIDDomain s = Just (JIDDomain s) -- TODO: stringprep, validation++mkJIDResource :: String -> Maybe JIDResource+mkJIDResource "" = Nothing+mkJIDResource s = Just (JIDResource s) -- TODO: stringprep, validation++mkJID :: String -> String -> String -> Maybe JID+mkJID nodeStr domainStr resourceStr = let+ node = mkJIDNode nodeStr+ resource = mkJIDResource resourceStr+ in do+ domain <- mkJIDDomain domainStr+ Just (JID node domain resource)++jidNode :: JID -> String+jidNode (JID x _ _) = maybe "" jidNodeStr x++jidDomain :: JID -> String+jidDomain (JID _ x _) = jidDomainStr x++jidResource :: JID -> String+jidResource (JID _ _ x) = maybe "" jidResourceStr x++-- TODO: validate input according to RFC 3920, section 3.1+jidParse :: String -> Maybe JID+jidParse s = let+ (nodeStr, postNode) = if '@' `elem` s then split s '@' else ("", s)+ (domainStr, resourceStr) = if '/' `elem` postNode then split postNode '/' else (postNode, "")+ in mkJID nodeStr domainStr resourceStr++jidFormat :: JID -> String+jidFormat (JID node (JIDDomain domain) resource) = let+ nodeStr = maybe "" (\(JIDNode s) -> s ++ "@") node+ resourceStr = maybe "" (\(JIDResource s) -> "/" ++ s) resource+ in concat [nodeStr, domain, resourceStr]++split :: (Eq a) => [a] -> a -> ([a], [a])+split xs final = let+ (before, rawAfter) = span (/= final) xs+ after = safeTail rawAfter+ in (before, after)++safeTail :: [a] -> [a]+safeTail [] = []+safeTail (_:xs) = xs
+ Network/Protocol/XMPP/SASL.hs view
@@ -0,0 +1,101 @@+{- Copyright (C) 2009 John Millikin <jmillikin@gmail.com>+ + 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+ 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 <http://www.gnu.org/licenses/>.+-}++module Network.Protocol.XMPP.SASL (+ Result(..)+ ,authenticate+ ) where++import Text.XML.HXT.Arrow ((>>>))+import qualified Text.XML.HXT.Arrow as A+import qualified Text.XML.HXT.DOM.XmlNode as XN+import qualified Network.Protocol.SASL.GSASL as G++import Network.Protocol.XMPP.JID (JID, jidFormat)+import Network.Protocol.XMPP.Util (mkElement, mkQName)+import qualified Network.Protocol.XMPP.Stream as S++type Username = String+type Password = String+type Mechanism = String++data Result = Success | Failure+ deriving (Show, Eq)++authenticate :: S.Stream -> JID -> JID -> Username -> Password -> IO Result+authenticate stream userJID serverJID username password = do+ let mechanisms = (advertisedMechanisms . S.streamFeatures) stream+ let authz = jidFormat userJID+ let hostname = jidFormat serverJID+ + G.withContext $ \ctxt -> do+ + suggested <- G.clientSuggestMechanism ctxt mechanisms+ mechanism <- case suggested of+ Just m -> return m+ Nothing -> error "No supported SASL mechanisms advertised"+ + G.withSession (G.clientStart ctxt mechanism) $ \s -> do+ + G.propertySet s G.GSASL_AUTHZID authz+ G.propertySet s G.GSASL_AUTHID username+ G.propertySet s G.GSASL_PASSWORD password+ G.propertySet s G.GSASL_SERVICE "xmpp"+ G.propertySet s G.GSASL_HOSTNAME hostname+ + (b64text, rc) <- G.step64 s ""+ S.putTree stream $ mkElement ("", "auth")+ [ ("", "xmlns", "urn:ietf:params:xml:ns:xmpp-sasl")+ ,("", "mechanism", mechanism)]+ [XN.mkText b64text]+ + case rc of+ G.GSASL_OK -> saslFinish stream+ G.GSASL_NEEDS_MORE -> saslLoop stream s++saslLoop :: S.Stream -> G.Session -> IO Result+saslLoop stream session = do+ challengeText <- A.runX (+ A.arrIO (\_ -> S.getTree stream)+ >>> A.getChildren+ >>> A.hasQName (mkQName "urn:ietf:params:xml:ns:xmpp-sasl" "challenge")+ >>> A.getChildren >>> A.getText)+ + if null challengeText then return Failure+ else do+ (b64text, rc) <- G.step64 session (concat challengeText)+ S.putTree stream $ mkElement ("", "response")+ [("", "xmlns", "urn:ietf:params:xml:ns:xmpp-sasl")]+ [XN.mkText b64text]+ case rc of+ G.GSASL_OK -> saslFinish stream+ G.GSASL_NEEDS_MORE -> saslLoop stream session++saslFinish :: S.Stream -> IO Result+saslFinish stream = do+ successElem <- A.runX (+ A.arrIO (\_ -> S.getTree stream)+ >>> A.getChildren+ >>> A.hasQName (mkQName "urn:ietf:params:xml:ns:xmpp-sasl" "success"))+ + return $ if null successElem then Failure else Success++advertisedMechanisms :: [S.StreamFeature] -> [Mechanism]+advertisedMechanisms [] = []+advertisedMechanisms (f:fs) = case f of+ (S.FeatureSASL ms) -> ms+ _ -> advertisedMechanisms fs+
+ Network/Protocol/XMPP/Stanzas.hs view
@@ -0,0 +1,198 @@+{- Copyright (C) 2009 John Millikin <jmillikin@gmail.com>+ + 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+ 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 <http://www.gnu.org/licenses/>.+-}++module Network.Protocol.XMPP.Stanzas (+ Stanza(..)+ ,GenericStanza(..)+ ,Message(..)+ ,Presence(..)+ ,toStanza+ ,toMessage+ ,toPresence+ ) where++import Text.XML.HXT.DOM.Interface (XmlTree)+import Text.XML.HXT.Arrow ((>>>), (&&&))+import qualified Text.XML.HXT.Arrow as A++import Network.Protocol.XMPP.JID (JID, jidFormat, jidParse)+import Network.Protocol.XMPP.Util (mkElement, mkQName)+import qualified Text.XML.HXT.DOM.XmlNode as XN++class Stanza a where+ stanzaTo :: a -> Maybe JID+ stanzaFrom :: a -> Maybe JID+ stanzaID :: a -> String+ stanzaType :: a -> String+ stanzaLang :: a -> String+ stanzaXML :: a -> XmlTree++data GenericStanza = GenericStanza+ {+ genericStanzaTo :: Maybe JID+ ,genericStanzaFrom :: Maybe JID+ ,genericStanzaID :: String+ ,genericStanzaType :: String+ ,genericStanzaLang :: String+ ,genericStanzaXML :: XmlTree+ }++instance Stanza GenericStanza where+ stanzaTo = genericStanzaTo+ stanzaFrom = genericStanzaFrom+ stanzaID = genericStanzaID+ stanzaType = genericStanzaType+ stanzaLang = genericStanzaLang+ stanzaXML = genericStanzaXML++data Message = Message+ {+ messageTo :: JID+ ,messageFrom :: Maybe JID+ ,messageID :: String+ ,messageType :: String+ ,messageLang :: String+ ,messageBody :: String+ }+ deriving (Show, Eq)++data Presence = Presence+ {+ presenceTo :: Maybe JID+ ,presenceFrom :: Maybe JID+ ,presenceID :: String+ ,presenceType :: String+ ,presenceLang :: String+ ,presenceShow :: String+ ,presenceStatus :: String+ }+ deriving (Show, Eq)++instance Stanza Message where+ stanzaTo = Just . messageTo+ stanzaFrom = messageFrom+ stanzaID = messageID+ stanzaType = messageType+ stanzaLang = messageLang+ stanzaXML m = let+ attrs' = [+ maybeAttr "to" $ (Just . jidFormat =<<) . stanzaTo+ ,maybeAttr "from" $ (Just . jidFormat =<<) . stanzaFrom+ ,mkAttr "id" $ stanzaID+ ,mkAttr "type" $ stanzaType+ -- ,mkAttr "lang" $ stanzaLang -- TODO: namespace support?+ ]+ attrs = concat $ unmap m attrs'+ + in mkElement ("jabber:client", "message")+ attrs+ [mkElement ("jabber:client", "body") []+ [XN.mkText $ messageBody m]]++instance Stanza Presence where+ stanzaTo = presenceTo+ stanzaFrom = presenceFrom+ stanzaID = presenceID+ stanzaType = presenceType+ stanzaLang = presenceLang+ stanzaXML p = let+ attrs' = [+ maybeAttr "to" $ (Just . jidFormat =<<) . stanzaTo+ ,maybeAttr "from" $ (Just . jidFormat =<<) . stanzaFrom+ ,mkAttr "id" $ stanzaID+ ,mkAttr "type" $ stanzaType+ -- ,mkAttr "lang" $ stanzaLang -- TODO: namespace support?+ ]+ attrs = concat $ unmap p attrs'+ + showElem = case presenceShow p of+ "" -> []+ text -> [mkElement ("jabber:client", "show") []+ [XN.mkText text]]+ + statusElem = case presenceStatus p of+ "" -> []+ text -> [mkElement ("jabber:client", "status") []+ [XN.mkText text]]+ + in mkElement ("jabber:client", "presence")+ attrs+ (showElem ++ statusElem)++-------------------------------------------------------------------------------++toStanza :: XmlTree -> [GenericStanza]+toStanza t = let+ getFrom = A.getAttrValue "from" >>> A.arrL (\x -> [jidParse x])+ getTo = A.getAttrValue "to" >>> A.arrL (\x -> [jidParse x])+ getID = A.getAttrValue "id"+ getType = A.getAttrValue "type"+ getLang = A.getAttrValue "lang"+ attrArrow = (getTo &&& getFrom &&& getID &&& getType &&& getLang)+ in do+ (to, (from, (id', (type', lang)))) <- A.runLA attrArrow t+ return $ GenericStanza to from id' type' lang t++toMessage :: (Stanza a) => a -> [Message]+toMessage s = let+ getBody = (+ A.arr stanzaXML+ >>> A.hasQName (mkQName "jabber:client" "message")+ >>> A.getChildren+ >>> A.hasQName (mkQName "jabber:client" "body")+ >>> A.getChildren+ >>> A.getText+ )+ bodyText = concat (A.runLA getBody s)+ in case (bodyText, stanzaTo s) of+ ("", _) -> []+ (_, Nothing) -> []+ (_, Just to) -> [Message to (stanzaFrom s)+ (stanzaID s) (stanzaType s)+ (stanzaLang s) bodyText]++toPresence :: (Stanza a) => a -> [Presence]+toPresence s = let+ getChildText qname = (A.getChildren >>> A.hasQName qname >>>+ A.getChildren >>> A.getText)+ getShow = getChildText $ mkQName "jabber:client" "show"+ getStatus = getChildText $ mkQName "jabber:client" "status"+ getShowStatus = (+ A.arr stanzaXML+ >>> A.hasQName (mkQName "jabber:client" "presence")+ >>> A.withDefault getShow []+ &&& A.withDefault getStatus []+ )+ in case A.runLA getShowStatus s of+ [(show', status)] -> [Presence (stanzaTo s) (stanzaFrom s)+ (stanzaID s) (stanzaType s)+ (stanzaLang s) show' status]+ _ -> []+++-------------------------------------------------------------------------------++unmap :: a -> [(a -> b)] -> [b]+unmap _ [] = []+unmap x (f:fs) = (f x):(unmap x fs)++maybeAttr :: (Stanza a) => String -> (a -> Maybe String) -> a -> [(String, String, String)]+maybeAttr attr f = mkAttr attr (\s -> maybe "" id (f s))++mkAttr :: (Stanza a) => String -> (a -> String) -> a -> [(String, String, String)]+mkAttr attr f stanza = case f stanza of+ "" -> []+ text -> [("", attr, text)]
+ Network/Protocol/XMPP/Stream.hs view
@@ -0,0 +1,245 @@+{- Copyright (C) 2009 John Millikin <jmillikin@gmail.com>+ + 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+ 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 <http://www.gnu.org/licenses/>.+-}++module Network.Protocol.XMPP.Stream (+ Stream (+ streamLanguage+ ,streamVersion+ ,streamFeatures+ )+ ,StreamFeature (+ FeatureStartTLS+ ,FeatureSASL+ ,FeatureRegister+ ,FeatureBind+ ,FeatureSession+ )+ ,beginStream+ ,restartStream+ ,getTree+ ,putTree+ ) where++import qualified System.IO as IO+import Data.AssocList (lookupDef)+import Data.Char (toUpper)++-- XML Parsing+import Text.XML.HXT.Arrow ((>>>))+import qualified Text.XML.HXT.Arrow as A+import qualified Text.XML.HXT.DOM.Interface as DOM+import qualified Text.XML.HXT.DOM.XmlNode as XN+import qualified Text.XML.LibXML.SAX as SAX++-- TLS support+import qualified Network.GnuTLS as GnuTLS+import Foreign (allocaBytes)+import Foreign.C (peekCAStringLen)++import Network.Protocol.XMPP.JID (JID, jidFormat)+import qualified Network.Protocol.XMPP.Util as Util++maxXMPPVersion :: XMPPVersion+maxXMPPVersion = XMPPVersion 1 0++data Stream = Stream+ {+ streamHandle :: Handle+ ,streamJID :: JID+ ,streamParser :: SAX.Parser+ ,streamLanguage :: XMLLanguage+ ,streamVersion :: XMPPVersion+ ,streamFeatures :: [StreamFeature]+ }++data StreamFeature =+ FeatureStartTLS Bool+ | FeatureSASL [String]+ | FeatureRegister+ | FeatureBind+ | FeatureSession+ | FeatureUnknown DOM.XmlTree+ deriving (Show, Eq)++newtype XMLLanguage = XMLLanguage String+ deriving (Show, Eq)++data XMPPVersion = XMPPVersion Int Int+ deriving (Show, Eq)++data Handle =+ PlainHandle IO.Handle+ | SecureHandle IO.Handle (GnuTLS.Session GnuTLS.Client)++------------------------------------------------------------------------------++restartStream :: Stream -> IO Stream+restartStream s = beginStream' (streamJID s) (streamHandle s)++beginStream :: JID -> IO.Handle -> IO Stream+beginStream jid rawHandle = do+ IO.hSetBuffering rawHandle IO.NoBuffering+ + plainStream <- beginStream' jid (PlainHandle rawHandle)+ + putTree plainStream $ Util.mkElement ("", "starttls")+ [("", "xmlns", "urn:ietf:params:xml:ns:xmpp-tls")]+ []+ getTree plainStream+ + session <- GnuTLS.tlsClient [+ GnuTLS.handle GnuTLS.:= rawHandle+ ,GnuTLS.priorities GnuTLS.:= [GnuTLS.CrtX509]+ ,GnuTLS.credentials GnuTLS.:= GnuTLS.certificateCredentials+ ]+ GnuTLS.handshake session+ beginStream' jid (SecureHandle rawHandle session)++beginStream' :: JID -> Handle -> IO Stream+beginStream' jid h = do+ -- Since only the opening tag should be written, normal XML+ -- serialization cannot be used. Be careful to escape any embedded+ -- attributes.+ let xmlHeader =+ "<?xml version='1.0'?>\n" +++ "<stream:stream xmlns='jabber:client'" +++ " to='" ++ (DOM.attrEscapeXml . jidFormat) jid ++ "'" +++ " version='1.0'" +++ " xmlns:stream='http://etherx.jabber.org/streams'>"+ + parser <- SAX.mkParser+ hPutStr h xmlHeader+ initialEvents <- readEventsUntil startOfStream h parser+ featureTree <- getTree' h parser+ + let startStreamEvent = last initialEvents+ let (language, version) = parseStartStream startStreamEvent+ let features = parseFeatures featureTree+ + return $ Stream h jid parser language version features+ + where+ streamName = Util.mkQName "http://etherx.jabber.org/streams" "stream"+ + startOfStream depth event = case (depth, event) of+ (1, (SAX.BeginElement elemName _)) ->+ streamName == Util.convertQName elemName+ _ -> False++parseStartStream :: SAX.Event -> (XMLLanguage, XMPPVersion)+parseStartStream e = (XMLLanguage "en", XMPPVersion 1 0) -- TODO++parseFeatures :: DOM.XmlTree -> [StreamFeature]+parseFeatures t =+ A.runLA (A.getChildren+ >>> A.hasQName featuresName+ >>> A.getChildren+ >>> A.arrL (\t' -> [parseFeature t'])) t+ where+ featuresName = Util.mkQName "http://etherx.jabber.org/streams" "features"++parseFeature :: DOM.XmlTree -> StreamFeature+parseFeature t = lookupDef FeatureUnknown qname [+ (("urn:ietf:params:xml:ns:xmpp-tls", "starttls"), parseFeatureTLS)+ ,(("urn:ietf:params:xml:ns:xmpp-sasl", "mechanisms"), parseFeatureSASL)+ ,(("http://jabber.org/features/iq-register", "register"), (\_ -> FeatureRegister))+ ,(("urn:ietf:params:xml:ns:xmpp-bind", "bind"), (\_ -> FeatureBind))+ ,(("urn:ietf:params:xml:ns:xmpp-session", "session"), (\_ -> FeatureSession))+ ] t+ where+ qname = maybe ("", "") (\n -> (DOM.namespaceUri n, DOM.localPart n)) (XN.getName t)++parseFeatureTLS :: DOM.XmlTree -> StreamFeature+parseFeatureTLS t = FeatureStartTLS True -- TODO: detect whether or not required++parseFeatureSASL :: DOM.XmlTree -> StreamFeature+parseFeatureSASL t = let+ mechName = Util.mkQName "urn:ietf:params:xml:ns:xmpp-sasl" "mechanism"+ mechanisms = A.runLA (+ A.getChildren+ >>> A.hasQName mechName+ >>> A.getChildren+ >>> A.getText) t+ + in FeatureSASL $ map (map toUpper) mechanisms++-------------------------------------------------------------------------------++getTree :: Stream -> IO DOM.XmlTree+getTree s = getTree' (streamHandle s) (streamParser s)++getTree' :: Handle -> SAX.Parser -> IO DOM.XmlTree+getTree' h p = do+ events <- readEventsUntil finished h p+ return $ Util.eventsToTree events+ where+ finished 0 (SAX.EndElement _) = True+ finished _ _ = False++putTree :: Stream -> DOM.XmlTree -> IO ()+putTree s t = do+ let root = XN.mkRoot [] [t]+ let h = streamHandle s+ [text] <- A.runX (A.constA root >>> A.writeDocumentToString [+ (A.a_no_xml_pi, "1")+ ])+ hPutStr h text++-------------------------------------------------------------------------------++readEventsUntil :: (Int -> SAX.Event -> Bool) -> Handle -> SAX.Parser -> IO [SAX.Event]+readEventsUntil done h parser = readEventsUntil' done 0 [] $ do+ char <- hGetChar h+ SAX.parse parser [char] False++readEventsUntil' :: (Int -> SAX.Event -> Bool) -> Int -> [SAX.Event] -> IO [SAX.Event] -> IO [SAX.Event]+readEventsUntil' done depth accum getEvents = do+ events <- getEvents+ let (done', depth', accum') = readEventsStep done events depth accum+ if done'+ then return accum'+ else readEventsUntil' done depth' accum' getEvents++readEventsStep :: (Int -> SAX.Event -> Bool) -> [SAX.Event] -> Int -> [SAX.Event] -> (Bool, Int, [SAX.Event])+readEventsStep _ [] depth accum = (False, depth, accum)+readEventsStep done (e:es) depth accum = let+ depth' = depth + case e of+ (SAX.BeginElement _ _) -> 1+ (SAX.EndElement _) -> (- 1)+ _ -> 0+ accum' = accum ++ [e]+ in if done depth' e then (True, depth', accum')+ else readEventsStep done es depth' accum'++-------------------------------------------------------------------------------++hPutStr :: Handle -> String -> IO ()+hPutStr (PlainHandle h) = IO.hPutStr h+hPutStr (SecureHandle _ session) = GnuTLS.tlsSendString session++hGetChar :: Handle -> IO Char+hGetChar (PlainHandle h) = IO.hGetChar h+hGetChar (SecureHandle h session) = allocaBytes 1 $ \ptr -> do+ pending <- GnuTLS.tlsCheckPending session+ if pending == 0+ then do+ IO.hWaitForInput h (-1)+ return ()+ else return ()+ + len <- GnuTLS.tlsRecv session ptr 1+ [char] <- peekCAStringLen (ptr, len)+ return char
+ Network/Protocol/XMPP/Util.hs view
@@ -0,0 +1,97 @@+{- Copyright (C) 2009 John Millikin <jmillikin@gmail.com>+ + 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+ 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 <http://www.gnu.org/licenses/>.+-}++module Network.Protocol.XMPP.Util (+ eventsToTree+ ,convertAttr+ ,convertQName+ ,mkElement+ ,mkAttr+ ,mkQName+ ) where++import qualified Text.XML.HXT.DOM.XmlNode as XN+import qualified Text.XML.HXT.DOM.Interface as DOM+import qualified Text.XML.LibXML.SAX as SAX++-------------------------------------------------------------------------------+-- For converting incremental XML event lists to HXT trees+-------------------------------------------------------------------------------++-- This function assumes the input list is valid. No validation is performed.+eventsToTree :: [SAX.Event] -> DOM.XmlTree+eventsToTree es = XN.mkRoot [] (eventsToTrees es)++eventsToTrees :: [SAX.Event] -> [DOM.XmlTree]+eventsToTrees es = concatMap blockToTrees (splitBlocks es)++-- Split event list into a sequence of "blocks", which are the events including+-- and between a pair of tags. <start><start2/></start> and <start/> are both+-- single blocks.+splitBlocks :: [SAX.Event] -> [[SAX.Event]]+splitBlocks es = ret where (_, _, ret) = foldl splitBlocks' (0, [], []) es++splitBlocks' :: (Int, [SAX.Event], [[SAX.Event]])+ -> SAX.Event+ -> (Int, [SAX.Event], [[SAX.Event]])+splitBlocks' (depth, accum, allAccum) e =+ if depth' == 0 then+ (depth', [], allAccum ++ [accum'])+ else+ (depth', accum', allAccum)+ where+ accum' = accum ++ [e]+ depth' = depth + case e of+ (SAX.BeginElement _ _) -> 1+ (SAX.EndElement _) -> (- 1)+ _ -> 0++blockToTrees :: [SAX.Event] -> [DOM.XmlTree]+blockToTrees [] = []+blockToTrees (begin:rest) = let end = (last rest) in case (begin, end) of+ (SAX.BeginElement qname attrs, SAX.EndElement _) ->+ [XN.mkElement (convertQName qname)+ (map convertAttr attrs)+ (eventsToTrees (init rest))]+ (SAX.Characters s, _) -> [XN.mkText s]+ (_, SAX.ParseError text) -> error text+ _ -> []++convertAttr :: SAX.Attribute -> DOM.XmlTree+convertAttr (SAX.Attribute qname value) = XN.NTree+ (XN.mkAttrNode (convertQName qname))+ [XN.mkText value]++convertQName :: SAX.QName -> DOM.QName+convertQName (SAX.QName ns _ local) = mkQName ns local++-------------------------------------------------------------------------------+-- Utility function for building XML trees+-------------------------------------------------------------------------------++mkElement :: (String, String) -> [(String, String, String)] -> [DOM.XmlTree] -> DOM.XmlTree+mkElement (ns, localpart) attrs children = let+ qname = mkQName ns localpart+ attrs' = [mkAttr ans alp text | (ans, alp, text) <- attrs]+ in XN.mkElement qname attrs' children++mkAttr :: String -> String -> String -> DOM.XmlTree+mkAttr ns localpart text = XN.mkAttr (mkQName ns localpart) [XN.mkText text]++mkQName :: String -> String -> DOM.QName+mkQName ns localpart = case ns of+ "" -> DOM.mkName localpart+ _ -> DOM.mkNsName localpart ns
+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ network-protocol-xmpp.cabal view
@@ -0,0 +1,27 @@+name: network-protocol-xmpp+version: 0.1+synopsis: Client <-> Server communication over XMPP+license: GPL+license-file: License.txt+author: John Millikin+maintainer: jmillikin@gmail.com+build-type: Simple+cabal-version: >=1.6+category: Network+stability: experimental+bug-reports: mailto:jmillikin@gmail.com++source-repository head+ type: bzr+ location: bzr+ssh://bazaar.launchpad.net/~jmillikin/%2Bjunk/network-protocol-xmpp/++library+ build-depends: base >=3 && < 5, hxt, libxml-sax >= 0.2, hsgnutls, gsasl, network+ exposed-modules:+ Network.Protocol.XMPP+ Network.Protocol.XMPP.Client+ Network.Protocol.XMPP.JID+ Network.Protocol.XMPP.SASL+ Network.Protocol.XMPP.Stanzas+ Network.Protocol.XMPP.Stream+ Network.Protocol.XMPP.Util