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agent: more strict parsing of TransportHost, tests (#629)

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This commit is contained in:
Evgeny Poberezkin
2023-02-04 22:59:28 +00:00
committed by GitHub
parent cfe995325a
commit ee2a764f93
2 changed files with 41 additions and 4 deletions
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src/Simplex/Messaging/Transport/Client.hs
+7 -3
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@@ -26,6 +26,7 @@ import Data.Aeson (FromJSON (..), ToJSON (..))
import qualified Data.Attoparsec.ByteString.Char8 as A
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as B
import Data.Char (isAsciiLower, isDigit)
import Data.Default (def)
import Data.List.NonEmpty (NonEmpty (..))
import qualified Data.List.NonEmpty as L
@@ -70,11 +71,14 @@ instance StrEncoding TransportHost where
strP =
A.choice
[ THIPv4 <$> ((,,,) <$> ipNum <*> ipNum <*> ipNum <*> A.decimal),
THOnionHost <$> ((<>) <$> A.takeTill (== '.') <*> A.string ".onion"),
THDomainName . B.unpack <$> A.takeWhile1 (A.notInClass ":#,;/ ")
THOnionHost <$> ((<>) <$> A.takeWhile (\c -> isAsciiLower c || isDigit c) <*> A.string ".onion"),
THDomainName . B.unpack <$> (notOnion <$?> A.takeWhile1 (A.notInClass ":#,;/ \n\r\t"))
]
where
ipNum = A.decimal <* A.char '.'
ipNum = validIP <$?> (A.decimal <* A.char '.')
validIP :: Int -> Either String Word8
validIP n = if 0 <= n && n <= 255 then Right $ fromIntegral n else Left "invalid IP address"
notOnion s = if ".onion" `B.isSuffixOf` s then Left "invalid onion host" else Right s
instance ToJSON TransportHost where
toEncoding = strToJEncoding