From de1a24cf818af86841e5101c96183a83fd8b3cb5 Mon Sep 17 00:00:00 2001
From: joe <joe@jerkface.net>
Date: Fri, 9 May 2014 20:44:38 -0400
Subject: remove extractPEM/splitPEM in favor of pemParser

---
 KeyRing.hs | 40 ++++------------------------------------
 1 file changed, 4 insertions(+), 36 deletions(-)

diff --git a/KeyRing.hs b/KeyRing.hs
index b0dff04..fe0f3cd 100644
--- a/KeyRing.hs
+++ b/KeyRing.hs
@@ -79,7 +79,6 @@ module KeyRing
     , getBindings
     , accBindings
     , isSubkeySignature
-    , extractPEM
     , torhash
     ) where
 
@@ -112,8 +111,8 @@ import Data.Time.Clock.POSIX ( POSIXTime )
 import Data.Bits ( Bits )
 import Data.Text.Encoding ( encodeUtf8 )
 import qualified Data.Map as Map
-import qualified Data.ByteString.Lazy as L ( unpack, pack, null, readFile, writeFile
-        , ByteString, toChunks, hGetContents, hPut, concat, fromChunks, isSuffixOf )
+import qualified Data.ByteString.Lazy as L ( unpack, null, readFile, writeFile
+        , ByteString, toChunks, hGetContents, hPut, concat, fromChunks )
 import qualified Data.ByteString      as S ( ByteString, unpack, splitAt, concat, cons, spanEnd, hGetContents, readFile)
 import qualified Crypto.Types.PubKey.ECC as ECC
 import qualified Codec.Binary.Base32 as Base32
@@ -152,6 +151,7 @@ import qualified Data.ByteString.Lazy.Char8 as Char8
 
 import TimeUtil
 import PEM
+import ScanningParser
 import qualified Hosts
 import qualified CryptoCoins
 import Base58
@@ -1386,7 +1386,7 @@ readKeyFromFile False "PEM" fname = do
     --       Therefore, we should attempt to preserve it.
     timestamp <- getInputFileTime ctx fname
     input <- readInputFileL ctx fname
-    let dta = extractPEM "RSA PRIVATE KEY" input
+    let dta = fmap pemBlob $ listToMaybe $ scanAndParse (pemParser $ Just "RSA PRIVATE KEY") $ Char8.lines input
     -- Char8.putStrLn $ "dta = " <> dta
     let rsa = do
            e <- decodeASN1 DER <$> dta
@@ -1419,38 +1419,6 @@ readKeyFromFile False "PEM" fname = do
             }
 readKeyFromFile is_public fmt filename = error ("unimplemented key type: "++fmt)
 
-extractPEM :: ByteString -> ByteString -> Maybe ByteString
-extractPEM typ pem = if L.null blob then Nothing else Just blob
- where
-    blob = pemBlob $ fst $ splitPEM (Just typ) $ Char8.lines pem
-
-splitPEM :: Maybe ByteString -> [ByteString] -> (PEMBlob,([ByteString],[ByteString]))
-splitPEM mtyp []  = (PEMBlob "" "", ([],[]))
-splitPEM mtyp pem =
-    case mblob of
-        Just blob -> (PEMBlob typ blob,(bs,drop 1 rs))
-        Nothing -> let (ret,(ts,us)) = splitPEM mtyp $ drop 1 rs
-                   in (ret, (bs++ys++ts,us))
- where
-    mblob = L.pack <$> Base64.decode (Char8.unpack dta)
-    dta = case ys of
-            _:dta_lines -> Char8.concat dta_lines
-            []          -> ""
-    (typ,(bs,xs)) =
-        case mtyp of
-            Just typ -> (typ,) $ span (/="-----BEGIN " <> typ <> "-----") pem
-            Nothing  -> (L.concat $ take 1 typs, xs0)
-                         where
-                            xs0 = span (not . ("-----BEGIN " `Char8.isPrefixOf`))
-                                       pem
-                            typs = do
-                                x0 <- fmap (Char8.drop 11) $ take 1 (fst xs0)
-                                guard $ "-----" `L.isSuffixOf` x0
-                                let typ = Char8.take (Char8.length x0 - 5) x0
-                                return typ
-    (ys,rs) = span (/="-----END " <> typ <> "-----") xs
-
-
 doImport
   :: Ord k =>
      (MappedPacket -> IO (KikiCondition Packet))
-- 
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