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{- Copyright 2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
-- | Gpg keyrings for debug-me
module Gpg.Keyring where
import Gpg
import qualified Gpg.Wot
import System.FilePath
import Data.Char
import System.Directory
import Data.Time.Clock
import Data.Time.Format
import System.Process
import System.Exit
keyringDir :: FilePath
keyringDir = "/usr/share/debug-me/keyring"
data Keyring = Keyring FilePath UTCTime
keyringToDeveloperDesc :: Maybe (Gpg.Wot.WotStats) -> Keyring -> String
keyringToDeveloperDesc mws (Keyring f mtime) =
name ++ " is " ++ desc ++ " \t(as of " ++ showtime mtime ++ ")"
where
name = maybe "This person" Gpg.Wot.wotStatName mws
desc = map sanitize $ dropExtension $ takeFileName f
sanitize '_' = ' '
sanitize c
| isAlphaNum c || c `elem` "-+" = c
| otherwise = '?'
showtime = formatTime defaultTimeLocale "%c"
findKeyringsContaining :: GpgKeyId -> IO [Keyring]
findKeyringsContaining k =
go [] . map (keyringDir </>) =<< getDirectoryContents keyringDir
where
go c [] = return c
go c (f:fs) = do
isfile <- doesFileExist f
if isfile && takeExtension f == ".gpg"
then do
inkeyring <- isInKeyring k f
if inkeyring
then do
mtime <- getModificationTime f
let keyring = Keyring f mtime
go (keyring : c) fs
else go c fs
else go c fs
-- | Check if the gpg key is included in the keyring file.
--
-- Similar to gpgv, this does not check if the key is revoked or expired,
-- only if it's included in the keyring.
isInKeyring :: GpgKeyId -> FilePath -> IO Bool
isInKeyring (GpgKeyId k) f = do
-- gpg assumes non-absolute keyring files are relative to ~/.gnupg/
absf <- makeAbsolute f
let p = proc "gpg"
-- Avoid reading any keyrings except the specified one.
[ "--no-options"
, "--no-default-keyring"
, "--no-auto-check-trustdb"
, "--keyring", absf
, "--list-key", k
]
(exitcode, _, _) <- readCreateProcessWithExitCode p ""
return (exitcode == ExitSuccess)
|
