windns (empty) → 0.1.0.0
raw patch · 7 files changed
+1145/−0 lines, 7 filesdep +basedep +bytestringdep +deepseqsetup-changed
Dependencies added: base, bytestring, deepseq
Files
- ChangeLog.md +3/−0
- LICENSE +674/−0
- Setup.hs +2/−0
- cbits/hs_windns.h +32/−0
- src/Network/DNS.hs +113/−0
- src/Network/DNS/FFI.hsc +255/−0
- windns.cabal +66/−0
+ ChangeLog.md view
@@ -0,0 +1,3 @@+## 0.1.0.0++* First version. Released on an unsuspecting world.
+ LICENSE 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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+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ cbits/hs_windns.h view
@@ -0,0 +1,32 @@+#if !defined(HS_WINDNS_H)+#define HS_WINDNS_H++#include <windows.h>+#include <windns.h>++static inline DNS_RECORDA *+hs_free_record(DNS_RECORDA *data)+{+ if (data)+ DnsRecordListFree(data, DnsFreeRecordList);+ return NULL;+}+++static inline DNS_RECORDA *+hs_dns_query(const char *hostname, WORD wtype, long *pstat)+{+ DNS_RECORDA *data = NULL;+ DNS_STATUS status = DnsQuery_A(hostname, wtype, DNS_QUERY_STANDARD, NULL, &data, NULL);++ if (pstat)+ *pstat = status;++ if (status)+ data = hs_free_record(data);++ return data;+}+++#endif
+ src/Network/DNS.hs view
@@ -0,0 +1,113 @@+{-# LANGUAGE Trustworthy #-}++-- |+-- Copyright: © 2017 Herbert Valerio Riedel+-- License: GPLv3+--+-- This module implements an API for accessing+-- the [Domain Name Service (DNS)](https://tools.ietf.org/html/rfc1035)+-- resolver service via the standard [<windns.h>/dnsapi.dll](https://msdn.microsoft.com/en-us/library/windows/desktop/ms682100\(v=vs.85\).aspx)+-- system library on Win32 systems.+--+module Network.DNS+ ( -- ** High level API+ queryA+ , queryAAAA+ , queryCNAME+ , querySRV+ , queryTXT++ -- * Types+ , Name(..)+ , CharStr(..)+ , IPv4(..)+ , IPv6(..)+ , TTL(..)+ , SRV(..)+ ) where++import Network.DNS.FFI++-- | Query @TXT@ records (see [RFC 1035, section 3.3.14](https://tools.ietf.org/html/rfc1035#section-3.3.14)).+--+-- >>> queryTXT (Name "_mirrors.hackage.haskell.org")+-- [(TTL 299,["0.urlbase=http://hackage.fpcomplete.com/",+-- "1.urlbase=http://objects-us-west-1.dream.io/hackage-mirror/"])]+--+queryTXT :: Name -> IO [(TTL, [CharStr])]+queryTXT n = do+ recs <- dnsQuery True n DnsTypeTXT+ case recs of+ Left err -> fail ("DnsQuery_A failed with " ++ show err)+ Right recs' -> return [ (ttl,ts)+ | DnsRecord { drTTL = ttl, drData = DnsDataTXT ts } <- recs'+ ]+++-- | Query @A@ record (see [RFC 1035, section 3.4.1](https://tools.ietf.org/html/rfc1035#section-3.4.1)).+--+-- This query returns only exact matches (modulo 'foldCaseName').+-- E.g. in case of @CNAME@ responses even if the+-- answer section would contain @A@ records for the hostnames pointed+-- to by the @CNAME@.+--+-- >>> queryA (Name "www.google.com")+-- [(TTL 72,IPv4 0xd83acde4)]+--+queryA :: Name -> IO [(TTL,IPv4)]+queryA n = do+ recs <- dnsQuery True n DnsTypeA+ case recs of+ Left err -> fail ("DnsQuery_A failed with " ++ show err)+ Right recs' -> return [ (ttl,ip4)+ | DnsRecord { drTTL = ttl, drData = DnsDataA ip4 } <- recs'+ ]++-- | Query @AAAA@ records (see [RFC 3596](https://tools.ietf.org/html/rfc3596)).+--+-- This query returns only exact matches (modulo 'foldCaseName').+-- E.g. in case of @CNAME@ responses even if the answer section would+-- contain @A@ records for the hostnames pointed to by the+-- @CNAME@.+--+-- >>> queryAAAA (Name "www.google.com")+-- [(TTL 299,IPv6 0x2a0014504001081e 0x2004)]+--+queryAAAA :: Name -> IO [(TTL,IPv6)]+queryAAAA n = do+ recs <- dnsQuery True n DnsTypeAAAA+ case recs of+ Left err -> fail ("DnsQuery_A failed with " ++ show err)+ Right recs' -> return [ (ttl,ip6)+ | DnsRecord { drTTL = ttl, drData = DnsDataAAAA ip6 } <- recs'+ ]+++-- | Query @CNAME@ records (see [RFC 1035, section 3.3.1](https://tools.ietf.org/html/rfc1035#section-3.3.1)).+--+-- >>> queryCNAME (Name "hackage.haskell.org")+-- [(TTL 299,Name "j.global-ssl.fastly.net.")]+--+queryCNAME :: Name -> IO [(TTL,Name)]+queryCNAME n = do+ recs <- dnsQuery True n DnsTypeCNAME+ case recs of+ Left err -> fail ("DnsQuery_A failed with " ++ show err)+ Right recs' -> return [ (ttl,cname)+ | DnsRecord { drTTL = ttl, drData = DnsDataCNAME cname } <- recs'+ ]+++-- | Query @SRV@ records (see [RFC 2782](https://tools.ietf.org/html/rfc2782)).+--+-- >>> querySRV (Name "_imap._tcp.gmail.com")+-- [(TTL 21599,SRV {srvPriority = 0, srvWeight = 0, srvPort = 0, srvTarget = Name "."})]+--+querySRV :: Name -> IO [(TTL,SRV Name)]+querySRV n = do+ recs <- dnsQuery True n DnsTypeSRV+ case recs of+ Left err -> fail ("DnsQuery_A failed with " ++ show err)+ Right recs' -> return [ (ttl,srv)+ | DnsRecord { drTTL = ttl, drData = DnsDataSRV srv } <- recs'+ ]
+ src/Network/DNS/FFI.hsc view
@@ -0,0 +1,255 @@+{-# LANGUAGE CApiFFI #-}+{-# LANGUAGE RecordWildCards #-}+{-# LANGUAGE GeneralizedNewtypeDeriving #-}+{-# LANGUAGE BangPatterns #-}+{-# LANGUAGE DeriveFoldable #-}+{-# LANGUAGE DeriveFunctor #-}+{-# LANGUAGE DeriveTraversable #-}++-- |+-- Copyright: © 2017 Herbert Valerio Riedel+-- License: GPLv3+--+module Network.DNS.FFI where++import Control.Applicative as App+import Control.DeepSeq+import Control.Exception+import Control.Monad+import Data.Bits+import Data.ByteString (ByteString)+import qualified Data.ByteString as BS+import Data.Int+import Data.Word+import Foreign.C.Types+import Foreign.Marshal.Alloc+import Foreign.Ptr+import Foreign.Storable+import Numeric (showHex)++#include <windows.h>+#include <windns.h>++type DWORD = #type DWORD+type WORD = #type WORD+type BOOL = #type BOOL++----------------------------------------------------------------------------++-- | Cache time-to-live expressed in seconds+newtype TTL = TTL Int32 deriving (Eq,Ord,Read,Show,NFData)++-- | @\<character-string\>@ as per [RFC 1035, section 3.3](https://tools.ietf.org/html/rfc1035#section-3.3).+--+-- A sequence of up to 255 octets+--+-- The limit of 255 octets is caused by the encoding which uses by a+-- prefixed octet denoting the length.+newtype CharStr = CharStr ByteString deriving (Eq,Ord,Read,Show)++instance NFData CharStr where rnf (CharStr !_) = ()++-- | @\<domain-name\>@ as per [RFC 1035, section 3.3](https://tools.ietf.org/html/rfc1035#section-3.3).+--+-- A domain-name represented as a series of labels separated by dots.+newtype Name = Name ByteString deriving (Eq,Ord,Read,Show)++instance NFData Name where rnf (Name !_) = ()+++-- | An IPv6 address+--+-- The IP address is represented in network order,+-- i.e. @2606:2800:220:1:248:1893:25c8:1946@ is+-- represented as @(IPv6 0x2606280002200001 0x248189325c81946)@.+data IPv6 = IPv6 !Word64 !Word64+ deriving (Eq,Ord,Read)++instance Show IPv6 where+ showsPrec p (IPv6 hi lo) = showParen (p >= 11) (showString "IPv6 0x" . showHex hi . showString " 0x" . showHex lo)++instance NFData IPv6 where+ rnf (IPv6 _ _) = ()++mkIPv6 :: Word32 -> Word32 -> Word32 -> Word32 -> IPv6+mkIPv6 a b c d = IPv6 (mkW64 a b) (mkW64 c d)+ where+ mkW64 x y = (fromIntegral (byteSwap32 x) `shiftL` 32) .|. fromIntegral (byteSwap32 y) :: Word64++-- | An IPv4 address+--+-- The IP address is represented in network order, i.e. @127.0.0.1@ is+-- represented as @(IPv4 0x7f000001)@.+data IPv4 = IPv4 !Word32+ deriving (Eq,Ord,Read)++instance NFData IPv4 where+ rnf (IPv4 _) = ()++mkIPv4 :: Word32 -> IPv4+mkIPv4 a = IPv4 (byteSwap32 a)++instance Show IPv4 where+ showsPrec p (IPv4 n) = showParen (p >= 11) (showString "IPv4 0x" . showHex n)++-- | @SRV@ Record data as per [RFC 2782](https://tools.ietf.org/html/rfc2782)+data SRV l = SRV { srvPriority :: !Word16+ , srvWeight :: !Word16+ , srvPort :: !Word16+ , srvTarget :: !l+ } deriving (Eq,Read,Show,Functor,Foldable,Traversable)++instance NFData l => NFData (SRV l) where+ rnf (SRV _ _ _ l) = rnf l++----------------------------------------------------------------------------++dnsQuery :: Bool -> Name -> DnsType -> IO (Either Int [DnsRecord])+dnsQuery exact (Name n) ty = do+ alloca $ \pst -> do+ BS.useAsCString n $ \n' ->+ bracket (c_dns_query n' (fromDnsType ty) pst)+ (c_free_record)+ $ \p0 -> do+ st <- peek pst+ if (st /= 0)+ then pure (Left (fromIntegral st))+ else do+ tmp <- travRecs (peekRec n') p0+ if exact+ then pure (Right [ r | (b,r) <- tmp, b ])+ else pure (Right (map snd tmp))+++foreign import capi safe "hs_windns.h hs_dns_query" c_dns_query :: Ptr CChar -> WORD -> Ptr CLong -> IO (Ptr DnsRecord)++foreign import capi unsafe "hs_windns.h hs_free_record" c_free_record :: Ptr DnsRecord -> IO (Ptr DnsRecord)++foreign import capi unsafe "hs_windns.h DnsNameCompare_A" c_dns_name_eq :: Ptr CChar -> Ptr CChar -> IO BOOL+++travRecs :: (Ptr DnsRecord -> IO a) -> Ptr DnsRecord -> IO [a]+travRecs f p0 = go [] p0+ where+ go acc p+ | p == nullPtr = App.pure (reverse acc)+ | otherwise = do+ x <- f p+ p' <- next p+ go (x:acc) p'++ next :: Ptr DnsRecord -> IO (Ptr DnsRecord)+ next = #{peek DNS_RECORDA, pNext}+++peekRec :: Ptr CChar -> Ptr DnsRecord -> IO (Bool,DnsRecord)+peekRec n0 p = do+ drNamePtr <- #{peek DNS_RECORDA, pName} p+ same <- c_dns_name_eq n0 drNamePtr+ drName <- Name <$> BS.packCString drNamePtr+ drType <- toDnsType <$> #{peek DNS_RECORDA, wType} p+ drTTL <- TTL . fromIntegral <$> (#{peek DNS_RECORDA, dwTtl} p :: IO DWORD)++ drData <- case drType of+ DnsTypeA -> DnsDataA . mkIPv4 <$> #{peek DNS_RECORDA, Data.A.IpAddress} p+ DnsTypeAAAA -> DnsDataAAAA <$> (mkIPv6 <$> #{peek DNS_RECORDA, Data.AAAA.Ip6Address.IP6Dword[0]} p+ <*> #{peek DNS_RECORDA, Data.AAAA.Ip6Address.IP6Dword[1]} p+ <*> #{peek DNS_RECORDA, Data.AAAA.Ip6Address.IP6Dword[2]} p+ <*> #{peek DNS_RECORDA, Data.AAAA.Ip6Address.IP6Dword[3]} p)+ DnsTypeTXT -> do+ cnt <- #{peek DNS_RECORDA, Data.TXT.dwStringCount} p+ let ptr0 = #{ptr DNS_RECORDA, Data.TXT.pStringArray[0]} p+ tptrs <- forM [0.. fromIntegral (cnt :: DWORD)-1] (peekElemOff ptr0)+ DnsDataTXT <$> mapM (fmap CharStr . BS.packCString) tptrs++ DnsTypeCNAME -> do+ cnamptr <- #{peek DNS_RECORDA, Data.CNAME.pNameHost} p+ DnsDataCNAME . Name <$> BS.packCString cnamptr++ DnsTypeSRV -> do+ namptr <- #{peek DNS_RECORDA, Data.SRV.pNameTarget} p+ srvTarget <- Name <$> BS.packCString namptr+ srvPort <- #{peek DNS_RECORDA, Data.SRV.wPort} p+ srvWeight <- #{peek DNS_RECORDA, Data.SRV.wWeight} p+ srvPriority <- #{peek DNS_RECORDA, Data.SRV.wPriority} p++ pure $! DnsDataSRV (SRV {..})++ DnsType w -> pure (DnsData w)++ evaluate $ force (same /= 0,DnsRecord{..})++data DnsRecord = DnsRecord+ { drName :: !Name+ , drType :: !DnsType+ , drTTL :: !TTL+ , drData :: !DnsData+ } deriving Show++instance NFData DnsRecord where+ rnf (DnsRecord n y t d) = n `deepseq` y `deepseq` t `deepseq` d `deepseq` ()+++data DnsData = DnsDataA !IPv4+ | DnsDataAAAA !IPv6+ | DnsDataTXT [CharStr]+ | DnsDataCNAME !Name+ | DnsDataSRV !(SRV Name)+ | DnsData !WORD -- unknown/unsupported+ deriving Show++instance NFData DnsData where+ rnf (DnsDataA _) = ()+ rnf (DnsDataAAAA {}) = ()+ rnf (DnsDataTXT ts) = rnf ts+ rnf (DnsDataCNAME n) = rnf n+ rnf (DnsDataSRV srv) = rnf srv+ rnf (DnsData _) = ()++dnsDataType :: DnsData -> DnsType+dnsDataType DnsDataA {} = DnsTypeA+dnsDataType DnsDataAAAA {} = DnsTypeAAAA+dnsDataType DnsDataTXT {} = DnsTypeTXT+dnsDataType DnsDataCNAME {} = DnsTypeCNAME+dnsDataType DnsDataSRV {} = DnsTypeSRV+dnsDataType (DnsData w) = DnsType w++data DnsType = DnsTypeA+ | DnsTypeAAAA+ | DnsTypeTXT+ | DnsTypeCNAME+ | DnsTypeSRV+ | DnsType !WORD+ deriving (Show)++instance NFData DnsType where rnf t = seq t ()++eqType :: DnsType -> DnsType -> Bool+eqType x y = fromDnsType x == fromDnsType y++fromDnsType :: DnsType -> WORD+fromDnsType x = case x of+ DnsTypeA -> #const DNS_TYPE_A+ DnsTypeAAAA -> #const DNS_TYPE_AAAA+ DnsTypeTXT -> #const DNS_TYPE_TEXT+ DnsTypeCNAME -> #const DNS_TYPE_CNAME+ DnsTypeSRV -> #const DNS_TYPE_SRV+ DnsType w -> w++toDnsType :: WORD -> DnsType+toDnsType w = case w of+ #{const DNS_TYPE_A } -> DnsTypeA+ #{const DNS_TYPE_AAAA} -> DnsTypeAAAA+ #{const DNS_TYPE_TEXT} -> DnsTypeTXT+ #{const DNS_TYPE_CNAME} -> DnsTypeCNAME+ #{const DNS_TYPE_SRV} -> DnsTypeSRV+ _ -> DnsType w+++#if !MIN_VERSION_base(4,7,0)+byteSwap32 :: Word32 -> Word32+byteSwap32 x = ((x .&. 0x000000FF) `shiftL` 24) .|.+ ((x .&. 0x0000FF00) `shiftL` 8) .|.+ ((x .&. 0x00FF0000) `shiftR` 8) .|.+ ((x .&. 0xFF000000) `shiftR` 24);+#endif
+ windns.cabal view
@@ -0,0 +1,66 @@+cabal-version: 1.12++name: windns+version: 0.1.0.0+synopsis: Domain Name Service (DNS) lookup via the <windns.h>/dnsapi.dll standard library+license: GPL-3+license-file: LICENSE+author: Herbert Valerio Riedel+maintainer: hvr@gnu.org+bug-reports: https://github.com/hvr/resolv/issues++category: Network+build-type: Simple+description: {++This package implements an API for accessing+the [Domain Name Service (DNS)](https://tools.ietf.org/html/rfc1035)+resolver service via the+standard [<windns.h>/dnsapi.dll](https://msdn.microsoft.com/en-us/library/windows/desktop/ms682100\(v=vs.85\).aspx)+system library on Win32 systems.+.+This package provides the high-level API-subset of the [resolv](https://hackage.haskell.org/package/resolv) package.++}++extra-source-files: ChangeLog.md+ cbits/hs_windns.h++source-repository head+ type: git+ location: https://github.com/hvr/windns.git++flag allow-non-windows+ description: Allow package to be built on @!os(windows)@+ manual: True+ default: False++library+ exposed-modules: Network.DNS+ other-modules: Network.DNS.FFI++ default-language: Haskell2010+ other-extensions: BangPatterns+ CApiFFI+ DeriveFoldable+ DeriveFunctor+ DeriveTraversable+ GeneralizedNewtypeDeriving+ RecordWildCards+ Trustworthy++ build-depends: base >= 4.5.1.0 && < 4.11+ , bytestring >= 0.9.2 && < 0.11+ , deepseq >= 1.3.0.0 && < 1.5++ build-tools: hsc2hs >= 0.67 && < 0.69++ hs-source-dirs: src+ include-dirs: cbits++ ghc-options: -Wall+ extra-libraries: dnsapi++ if !(os(windows) || flag(allow-non-windows))+ build-depends:base<0+