urlencode dereferrer links

lib/Uris.hs

@@ -24,7 +24,7 @@ import           GHC.Generics            (Generic)
 import           GHC.TypeLits            (KnownSymbol, symbolVal)
 import           Text.Regex.TDFA         ((=~))
 import Witherable (mapMaybe)
-
+import Network.URI.Encode as URI
 
 data Substitution =
     Prefixed { prefix :: Text, blocked :: [Text], allowed :: [Text], scope :: [String] }
@@ -98,7 +98,7 @@ applySubsts s substs uri =  do
         Prefixed {..}
           | domain `elem` blocked -> Left IsBlocked
           | domain `elem` allowed -> Right uri
-          | otherwise -> Right (prefix <> domain <> rest)
+          | otherwise -> Right (prefix <> URI.encodeText uri)
         Allowed _ domains -> if domain `elem` domains
           then Right uri
           else Left (DomainIsBlocked domains)

walint.cabal

@@ -56,7 +56,8 @@ library
                       extra,
                       witherable,
                       dotgen,
-                      text-metrics
+                      text-metrics,
+                      uri-encode
 
 -- TODO: move more stuff into lib, these dependencies are silly
 executable walint