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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/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/netrc.cabal b/netrc.cabal new file mode 100644 --- /dev/null +++ b/netrc.cabal @@ -0,0 +1,74 @@ +name: netrc +version: 0.1.0.0 +synopsis: Parser for .netrc files +homepage: https://github.com/hvr/netrc +license: GPL-3 +license-file: LICENSE +author: Herbert Valerio Riedel +maintainer: hvr@gnu.org +copyright: © 2015 Herbert Valerio Riedel +category: Network +build-type: Simple +cabal-version: >=1.10 +tested-with: GHC ==7.10.1, GHC ==7.8.4, GHC ==7.6.3, GHC ==7.4.2 +description: + See manual page for more + information about @.netrc@ files. + +extra-source-files: + src-tests/data/*.netrc + src-tests/data/*.netrc.out + +Flag bytestring_has_builder + description: whether bytestring is 0.10.4 or newer + default: True + +library + default-language: Haskell2010 + other-extensions: + BangPatterns + CPP + DeriveDataTypeable + DeriveGeneric + OverloadedStrings + RecordWildCards + + build-depends: + base >=4.5 && <4.9, + deepseq >=1.3 && <1.5, + bytestring >=0.9.2.1 && <0.11, + parsec >=3.1 && <3.2 + + -- GHC.Generics lived in `ghc-prim` for GHC 7.2 & GHC 7.4 + if impl(ghc < 7.6) + build-depends: ghc-prim == 0.2.* + + if flag(bytestring_has_builder) + build-depends: bytestring >= 0.10.4 + else + build-depends: + bytestring <0.10.4, + bytestring-builder >=0.10.4.1.2 && <0.11 + + hs-source-dirs: src + exposed-modules: Network.NetRc + + ghc-options: -Wall + +test-suite test-netrc + default-language: Haskell2010 + type: exitcode-stdio-1.0 + hs-source-dirs: src-tests + main-is: test-netrc.hs + + build-depends: + netrc, + base, + bytestring, + tasty == 0.10.*, + tasty-golden == 2.3.*, + tasty-quickcheck == 0.8.* + +source-repository head + type: git + location: https://github.com/hvr/netrc.git diff --git a/src-tests/data/test0a.netrc b/src-tests/data/test0a.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test0a.netrc diff --git a/src-tests/data/test0a.netrc.out b/src-tests/data/test0a.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test0a.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] []) diff --git a/src-tests/data/test0b.netrc b/src-tests/data/test0b.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test0b.netrc @@ -0,0 +1,1 @@ + diff --git a/src-tests/data/test0b.netrc.out b/src-tests/data/test0b.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test0b.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] []) diff --git a/src-tests/data/test0c.netrc b/src-tests/data/test0c.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test0c.netrc @@ -0,0 +1,1 @@ +# diff --git a/src-tests/data/test0c.netrc.out b/src-tests/data/test0c.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test0c.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] []) diff --git a/src-tests/data/test0d.netrc b/src-tests/data/test0d.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test0d.netrc @@ -0,0 +1,1 @@ +# diff --git a/src-tests/data/test0d.netrc.out b/src-tests/data/test0d.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test0d.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] []) diff --git a/src-tests/data/test0e.netrc b/src-tests/data/test0e.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test0e.netrc @@ -0,0 +1,5 @@ +# some +# comments + +# and empty lines + diff --git a/src-tests/data/test0e.netrc.out b/src-tests/data/test0e.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test0e.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] []) diff --git a/src-tests/data/test1a.netrc b/src-tests/data/test1a.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test1a.netrc @@ -0,0 +1,2 @@ +machine host1.domain.com login log1 password pass1 account acct1 +default login log2 password pass2 diff --git a/src-tests/data/test1a.netrc.out b/src-tests/data/test1a.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test1a.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "host1.domain.com", nrhLogin = "log1", nrhPassword = "pass1", nrhAccount = "acct1"},NetRcHost {nrhName = "", nrhLogin = "log2", nrhPassword = "pass2", nrhAccount = ""}] []) diff --git a/src-tests/data/test2a.netrc b/src-tests/data/test2a.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test2a.netrc @@ -0,0 +1,1 @@ +machine host.domain.com login log password #pass account acct diff --git a/src-tests/data/test2a.netrc.out b/src-tests/data/test2a.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test2a.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "host.domain.com", nrhLogin = "log", nrhPassword = "#pass", nrhAccount = "acct"}] []) diff --git a/src-tests/data/test2b.netrc b/src-tests/data/test2b.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test2b.netrc @@ -0,0 +1,1 @@ +machine host.domain.com login log password pass# account acct diff --git a/src-tests/data/test2b.netrc.out b/src-tests/data/test2b.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test2b.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "host.domain.com", nrhLogin = "log", nrhPassword = "pass#", nrhAccount = "acct"}] []) diff --git a/src-tests/data/test2c.netrc b/src-tests/data/test2c.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test2c.netrc @@ -0,0 +1,1 @@ +machine host.domain.com login log password pa#ss account acct diff --git a/src-tests/data/test2c.netrc.out b/src-tests/data/test2c.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test2c.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "host.domain.com", nrhLogin = "log", nrhPassword = "pa#ss", nrhAccount = "acct"}] []) diff --git a/src-tests/data/test3a.netrc b/src-tests/data/test3a.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test3a.netrc @@ -0,0 +1,3 @@ +# comment +machine foo.domain.com login bar password pass +machine bar.domain.com login foo password pass diff --git a/src-tests/data/test3a.netrc.out b/src-tests/data/test3a.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test3a.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "foo.domain.com", nrhLogin = "bar", nrhPassword = "pass", nrhAccount = ""},NetRcHost {nrhName = "bar.domain.com", nrhLogin = "foo", nrhPassword = "pass", nrhAccount = ""}] []) diff --git a/src-tests/data/test3b.netrc b/src-tests/data/test3b.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test3b.netrc @@ -0,0 +1,3 @@ +#comment +machine foo.domain.com login bar password pass +machine bar.domain.com login foo password pass diff --git a/src-tests/data/test3b.netrc.out b/src-tests/data/test3b.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test3b.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "foo.domain.com", nrhLogin = "bar", nrhPassword = "pass", nrhAccount = ""},NetRcHost {nrhName = "bar.domain.com", nrhLogin = "foo", nrhPassword = "pass", nrhAccount = ""}] []) diff --git a/src-tests/data/test3c.netrc b/src-tests/data/test3c.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test3c.netrc @@ -0,0 +1,3 @@ +# +machine foo.domain.com login bar password pass +machine bar.domain.com login foo password pass diff --git a/src-tests/data/test3c.netrc.out b/src-tests/data/test3c.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test3c.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "foo.domain.com", nrhLogin = "bar", nrhPassword = "pass", nrhAccount = ""},NetRcHost {nrhName = "bar.domain.com", nrhLogin = "foo", nrhPassword = "pass", nrhAccount = ""}] []) diff --git a/src-tests/data/test3e.netrc b/src-tests/data/test3e.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test3e.netrc @@ -0,0 +1,2 @@ +machine foo.domain.com login bar password pass # comment +machine bar.domain.com login foo password pass diff --git a/src-tests/data/test3e.netrc.out b/src-tests/data/test3e.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test3e.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "foo.domain.com", nrhLogin = "bar", nrhPassword = "pass", nrhAccount = ""},NetRcHost {nrhName = "bar.domain.com", nrhLogin = "foo", nrhPassword = "pass", nrhAccount = ""}] []) diff --git a/src-tests/data/test3f.netrc b/src-tests/data/test3f.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test3f.netrc @@ -0,0 +1,2 @@ +machine foo.domain.com login bar password pass #comment +machine bar.domain.com login foo password pass diff --git a/src-tests/data/test3f.netrc.out b/src-tests/data/test3f.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test3f.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "foo.domain.com", nrhLogin = "bar", nrhPassword = "pass", nrhAccount = ""},NetRcHost {nrhName = "bar.domain.com", nrhLogin = "foo", nrhPassword = "pass", nrhAccount = ""}] []) diff --git a/src-tests/data/test3g.netrc b/src-tests/data/test3g.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test3g.netrc @@ -0,0 +1,2 @@ +machine foo.domain.com login bar password #pass #comment +machine bar.domain.com login foo password pass diff --git a/src-tests/data/test3g.netrc.out b/src-tests/data/test3g.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test3g.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "foo.domain.com", nrhLogin = "bar", nrhPassword = "#pass", nrhAccount = ""},NetRcHost {nrhName = "bar.domain.com", nrhLogin = "foo", nrhPassword = "pass", nrhAccount = ""}] []) diff --git a/src-tests/data/test4a.netrc b/src-tests/data/test4a.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test4a.netrc @@ -0,0 +1,6 @@ +macdef macro1 +line1 +line2 +macdef macro2 +line3 +line4 diff --git a/src-tests/data/test4a.netrc.out b/src-tests/data/test4a.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test4a.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\nmacdef macro2\nline3\nline4\n"}]) diff --git a/src-tests/data/test4b.netrc b/src-tests/data/test4b.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test4b.netrc @@ -0,0 +1,7 @@ +macdef macro1 +line1 +line2 +# +macdef macro2 +line3 +line4 diff --git a/src-tests/data/test4b.netrc.out b/src-tests/data/test4b.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test4b.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\n#\nmacdef macro2\nline3\nline4\n"}]) diff --git a/src-tests/data/test4c.netrc b/src-tests/data/test4c.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test4c.netrc @@ -0,0 +1,7 @@ +macdef macro1 +line1 +line2 + +macdef macro2 +line3 +line4 diff --git a/src-tests/data/test4c.netrc.out b/src-tests/data/test4c.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test4c.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\n"},NetRcMacDef {nrmName = "macro2", nrmBody = "line3\nline4\n"}]) diff --git a/src-tests/data/test4d.netrc b/src-tests/data/test4d.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test4d.netrc @@ -0,0 +1,7 @@ +macdef macro1 +line1 +line2 + + macdef macro2 +line3 +line4 diff --git a/src-tests/data/test4d.netrc.out b/src-tests/data/test4d.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test4d.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\n"},NetRcMacDef {nrmName = "macro2", nrmBody = "line3\nline4\n"}]) diff --git a/src-tests/data/test4e.netrc b/src-tests/data/test4e.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test4e.netrc @@ -0,0 +1,6 @@ +macdef macro1 +line1 +line2 + +line3 +line4 diff --git a/src-tests/data/test4e.netrc.out b/src-tests/data/test4e.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test4e.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\n \nline3\nline4\n"}]) diff --git a/src-tests/data/test4f.netrc b/src-tests/data/test4f.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test4f.netrc @@ -0,0 +1,6 @@ +macdef macro1 +line1 +line2 +# +line3 +line4 diff --git a/src-tests/data/test4f.netrc.out b/src-tests/data/test4f.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test4f.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\n#\nline3\nline4\n"}]) diff --git a/src-tests/data/test5a.netrc b/src-tests/data/test5a.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test5a.netrc @@ -0,0 +1,9 @@ +macdef macro1 +line1 +line2 + +default login anon password blah + +macdef macro2 +line3 +line4 diff --git a/src-tests/data/test5a.netrc.out b/src-tests/data/test5a.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test5a.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [NetRcHost {nrhName = "", nrhLogin = "anon", nrhPassword = "blah", nrhAccount = ""}] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\n"},NetRcMacDef {nrmName = "macro2", nrmBody = "line3\nline4\n"}]) diff --git a/src-tests/data/test5b.netrc b/src-tests/data/test5b.netrc new file mode 100644 --- /dev/null +++ b/src-tests/data/test5b.netrc @@ -0,0 +1,14 @@ +# some macro +macdef macro1 +line1 +line2 + +default login anon password blah # comment +# + +# +macdef macro2 +line3 +line4 + +# EOF diff --git a/src-tests/data/test5b.netrc.out b/src-tests/data/test5b.netrc.out new file mode 100644 --- /dev/null +++ b/src-tests/data/test5b.netrc.out @@ -0,0 +1,1 @@ +Right (NetRc [] [NetRcMacDef {nrmName = "macro1", nrmBody = "line1\nline2\n \ndefault login anon password blah # comment\n# \n"},NetRcMacDef {nrmName = "macro2", nrmBody = "line3\nline4\n"}]) diff --git a/src-tests/test-netrc.hs b/src-tests/test-netrc.hs new file mode 100644 --- /dev/null +++ b/src-tests/test-netrc.hs @@ -0,0 +1,79 @@ +{-# LANGUAGE BangPatterns #-} +{-# LANGUAGE OverloadedStrings #-} + +module Main (main) where + +import qualified Network.NetRc as IUT + +import Control.Applicative +import Data.ByteString (ByteString) +import qualified Data.ByteString as B +import qualified Data.ByteString.Char8 as BC +import qualified Data.ByteString.Lazy as LB +import qualified Data.ByteString.Lazy.Char8 as LBC +import Data.List +import Data.Maybe + +import Test.Tasty +import Test.Tasty.Golden +import Test.Tasty.QuickCheck + +doGoTest :: FilePath -> IO LB.ByteString +doGoTest fp = do + raw <- B.readFile fp + let !retval = IUT.parseNetRc fp raw + return (LBC.pack $ show retval) + +main :: IO () +main = do + netrcFiles <- findByExtension [".netrc"] "src-tests/data" + + let goTests = testGroup "golden" + [ goldenVsString tn (fp++".out") (doGoTest fp) + | fp <- sort netrcFiles + , let Just tn = stripPrefix "src-tests/data/" fp + ] + + defaultMain $ testGroup "Tests" [goTests, qcTests] + + where + + qcTests = testGroup "QC" [testProperty "roundtrip" propRoundtrip] + + propRoundtrip :: IUT.NetRc -> Bool + propRoundtrip rc0 = Right rc0 == IUT.parseNetRc "" b + where + b = IUT.netRcToByteString rc0 + +-- | Represent suitable token values (i.e. containing no TAB/SP/LF chars) +-- only 7bit characters w/o NUL are generated +newtype Token = Token { fromToken :: ByteString } + deriving (Show,Read,Eq,Ord) + +instance Arbitrary Token where + arbitrary = Token . B.pack <$> listOf c + where + c = choose (1,127) `suchThat` (`notElem` [9,10,32]) + +-- | Line suitable for macdef bodies +newtype Line = Line { fromLine :: ByteString } + deriving (Show,Read,Eq,Ord) + +instance Arbitrary Line where + arbitrary = Line . B.pack <$> listOf1 c + where + c = choose (1,127) `suchThat` (/= 10) + +instance Arbitrary IUT.NetRc where + arbitrary = IUT.NetRc <$> arbitrary <*> arbitrary + +instance Arbitrary IUT.NetRcMacDef where + arbitrary = IUT.NetRcMacDef <$> (tok `suchThat` (/= "")) <*> body + where + tok = fromToken <$> arbitrary + body = BC.unlines <$> (listOf (fromLine <$> arbitrary)) + +instance Arbitrary IUT.NetRcHost where + arbitrary = IUT.NetRcHost <$> tok <*> tok <*> tok <*> tok + where + tok = fromToken <$> arbitrary diff --git a/src/Network/NetRc.hs b/src/Network/NetRc.hs new file mode 100644 --- /dev/null +++ b/src/Network/NetRc.hs @@ -0,0 +1,241 @@ +{-# LANGUAGE BangPatterns #-} +{-# LANGUAGE CPP #-} +{-# LANGUAGE DeriveDataTypeable #-} +{-# LANGUAGE DeriveGeneric #-} +{-# LANGUAGE OverloadedStrings #-} +{-# LANGUAGE RecordWildCards #-} + +-- | Provides parser for @$HOME/.netrc@ files +-- +-- The implemented grammar is approximately: +-- +-- > NETRC := (WS|)* (ENTRY (WS+ *)+)* ENTRY? +-- > +-- > ENTRY := 'machine' WS+ WS+ ((account|username|password) WS+ )* +-- > | 'default' WS+ (('account'|'username'|'password') WS+ )* +-- > | 'macdef' LF ( LF)* LF +-- > +-- > WS := (LF|SPC|TAB) +-- > +-- > := !LF+ +-- > := !WS+ +-- > := '#' !LF* LF +-- +-- As an extension to the @.netrc@-format as described in .e.g. +-- , @#@-style comments are +-- supported. For simplicity, such comments are only allowed between +-- entries. +-- +module Network.NetRc + ( -- * Types + NetRc(..) + , NetRcHost(..) + , NetRcMacDef(..) + + -- * Formatters + , netRcToBuilder + , netRcToByteString + + -- * Parsers + , netRcParsec + , parseNetRc + + -- * Utilities + , readUserNetRc + ) where + +import Control.Applicative +import Control.DeepSeq +import Control.Monad +import Data.ByteString (ByteString) +import qualified Data.ByteString as B +import qualified Data.ByteString.Builder as BB +import qualified Data.ByteString.Char8 as BC +import qualified Data.ByteString.Lazy as LB +import Data.Data +import Data.Either (partitionEithers) +import Data.List (intersperse, foldl') +import Data.Monoid +import GHC.Generics +import System.Environment +import System.IO.Error +import qualified Text.Parsec as P +import qualified Text.Parsec.ByteString as P + +-- | @machine@ and @default@ entries describe remote accounts +-- +-- __Invariant__: fields must not contain any @TAB@s, @SPACE@, or @LF@s. +data NetRcHost = NetRcHost + { nrhName :: !ByteString -- ^ Remote machine name (@""@ for @default@-entries) + , nrhLogin :: !ByteString -- ^ @login@ property (@""@ if missing) + , nrhPassword :: !ByteString -- ^ @password@ property (@""@ if missing) + , nrhAccount :: !ByteString -- ^ @account@ property (@""@ if missing) + } deriving (Eq,Ord,Show,Typeable,Data,Generic) + +instance NFData NetRcHost where rnf !_ = () + +-- | @macdef@ entries defining @ftp@ macros +data NetRcMacDef = NetRcMacDef + { nrmName :: !ByteString -- ^ Name of @macdef@ entry (__Invariant__: must not contain any @TAB@s, @SPACE@, or @LF@s) + , nrmBody :: !ByteString -- ^ Raw @macdef@ body (__Invariant__: must not contain null-lines) + } deriving (Eq,Ord,Show,Typeable,Data,Generic) + +instance NFData NetRcMacDef where rnf !_ = () + +-- | Represents (semantic) contents of a @.netrc@ file +data NetRc = NetRc [NetRcHost] [NetRcMacDef] + deriving (Eq,Ord,Show,Typeable,Data,Generic) + +instance NFData NetRc where + rnf (NetRc ms ds) = ms `deepseq` ds `deepseq` () + +-- | Construct a 'ByteString' 'BB.Builder' +netRcToBuilder :: NetRc -> BB.Builder +netRcToBuilder (NetRc ms ds) = + mconcat . intersperse nl $ map netRcHostToBuilder ms <> map netRcMacDefToBuilder ds + where + netRcHostToBuilder (NetRcHost {..}) + = mconcat + [ mline + , prop "login" nrhLogin + , prop "password" nrhPassword + , prop "account" nrhAccount + , nl + ] + where + mline | B.null nrhName = BB.byteString "default" + | otherwise = BB.byteString "machine" <> spc <> BB.byteString nrhName + + prop lab val | B.null val = mempty + | otherwise = spc <> BB.byteString lab <> spc <> BB.byteString val + + netRcMacDefToBuilder (NetRcMacDef {..}) + = BB.byteString "macdef" <> spc <> BB.byteString nrmName <> + (if B.null nrmBody then mempty else nl <> BB.byteString nrmBody) <> + nl + + spc = BB.charUtf8 ' ' + nl = BB.charUtf8 '\n' + +-- | Format 'NetRc' into a 'ByteString' +-- +-- This is currently just a convenience wrapper around 'netRcToBuilder' +netRcToByteString :: NetRc -> ByteString +#if MIN_VERSION_bytestring(0,10,0) +netRcToByteString = LB.toStrict . BB.toLazyByteString . netRcToBuilder +#else +netRcToByteString = B.concat . LB.toChunks . BB.toLazyByteString . netRcToBuilder +#endif + + +-- | Convenience wrapper for 'netRcParsec' parser +-- +-- This is basically just +-- +-- @ +-- 'parseNetRc' = 'P.parse' ('netRcParsec' <* 'P.eof') +-- @ +-- +-- This wrapper is mostly useful for avoiding to have to import Parsec +-- modules (and to build-depend explicitly on @parsec@). +-- +parseNetRc :: P.SourceName -> ByteString -> Either P.ParseError NetRc +parseNetRc = P.parse (netRcParsec <* P.eof) + + +-- | Reads and parses default @$HOME/.netrc@ +-- +-- Returns 'Nothing' if @$HOME@ variable undefined and/or if @.netrc@ if missing. +-- Throws standard IO exceptions in case of other filesystem-errors. +-- +-- __Note__: This function performs no permission sanity-checking on +-- the @.netrc@ file +readUserNetRc :: IO (Maybe (Either P.ParseError NetRc)) +readUserNetRc = do + mhome <- lookupEnv "HOME" + case mhome of + Nothing -> return Nothing + Just "" -> return Nothing + Just ho -> do + let fn = ho ++ "/.netrc" + ret <- tryIOError (B.readFile fn) + case ret of + Left e | isDoesNotExistError e -> return Nothing + | otherwise -> ioError e + Right b -> return $! Just $! parseNetRc fn b +#if !(MIN_VERSION_base(4,6,0)) + where + lookupEnv k = lookup k <$> getEnvironment +#endif + +-- | "Text.Parsec.ByteString" 'P.Parser' for @.netrc@ grammar +netRcParsec :: P.Parser NetRc +netRcParsec = (uncurry NetRc . partitionEithers) <$> (wsOrComments0 *> P.sepEndBy netrcEnt wsOrComments1) + where + wsOrComments0 = P.skipMany comment >> P.skipMany (wsChars1 >> P.skipMany comment) + wsOrComments1 = P.skipMany1 (wsChars1 >> P.skipMany comment) + + netrcEnt = (Left <$> hostEnt) <|> (Right <$> macDefEnt) + +macDefEnt :: P.Parser NetRcMacDef +macDefEnt = do + void $ P.try (P.string "macdef") + wsChars1 + n <- tok P. "macdef-name" + P.skipMany (P.oneOf "\t ") + lf + bodyLines <- P.sepEndBy neline lf + return $! NetRcMacDef n (BC.pack $ unlines bodyLines) + where + neline = P.many1 (P.noneOf "\n") + +hostEnt :: P.Parser NetRcHost +hostEnt = do + nam <- mac <|> def + ps <- P.many (P.try (wsChars1 *> pval)) + return $! foldl' setFld (NetRcHost nam "" "" "") ps + where + def = P.try (P.string "default") *> pure "" + + mac = do + P.try (void $ P.string "machine") + wsChars1 + tok P. "hostname" + + -- pval := ((account|username|password) WS+ ) + pval = hlp "login" "loginname" PValLogin <|> + hlp "account" "accountname" PValAccount <|> + hlp "password" "password" PValPassword + where + hlp tnam vnam cons = P.try (P.string tnam) *> wsChars1 *> (cons <$> tok P. vnam) + + setFld n (PValLogin v) = n { nrhLogin = v } + setFld n (PValAccount v) = n { nrhAccount = v } + setFld n (PValPassword v) = n { nrhPassword = v } + +tok :: P.Parser ByteString +tok = BC.pack <$> P.many1 notWsChar P. "token" + +data PVal = PValLogin !ByteString + | PValAccount !ByteString + | PValPassword !ByteString + deriving Show + +lf, wsChar, wsChars1 :: P.Parser () +lf = void (P.char '\n') P. "line-feed" +wsChar = void (P.oneOf "\t \n") +wsChars1 = P.skipMany1 wsChar + +-- | Any 'Char' not parsed by 'wsChar' +notWsChar :: P.Parser Char +notWsChar = P.noneOf "\t \n" + +-- | Comments (where allowed) go till rest of line +comment :: P.Parser () +comment = (P.char '#' *> skipToEol) P. "comment" + +-- | Consume/skip rest of line +skipToEol :: P.Parser () +skipToEol = P.skipMany notlf <* (lf <|> P.eof) + where + notlf = P.noneOf "\n"