9ffd97442b
Fails with gpg 2. Instead, use a different environment variable. The clean fix would instead be to add an annex.gpg-options configuration. But, that would be rather a lot of work and it's unlikely it would be useful for much else.
198 lines
7.4 KiB
Haskell
198 lines
7.4 KiB
Haskell
{- gpg interface
|
||
-
|
||
- Copyright 2011 Joey Hess <joey@kitenet.net>
|
||
-
|
||
- Licensed under the GNU GPL version 3 or higher.
|
||
-}
|
||
|
||
module Utility.Gpg where
|
||
|
||
import qualified Data.ByteString.Lazy.Char8 as L
|
||
import System.Posix.Types
|
||
import Control.Applicative
|
||
import Control.Concurrent
|
||
import Control.Exception (finally, bracket)
|
||
import System.Exit
|
||
import System.Posix.Env (setEnv, unsetEnv, getEnv)
|
||
|
||
import Common
|
||
|
||
newtype KeyIds = KeyIds [String]
|
||
deriving (Ord, Eq)
|
||
|
||
stdParams :: [CommandParam] -> IO [String]
|
||
stdParams params = do
|
||
-- Enable batch mode if GPG_AGENT_INFO is set, to avoid extraneous
|
||
-- gpg output about password prompts. GPG_BATCH is set by the test
|
||
-- suite for a similar reason.
|
||
e <- getEnv "GPG_AGENT_INFO"
|
||
b <- getEnv "GPG_BATCH"
|
||
let batch = if isNothing e && isNothing b
|
||
then []
|
||
else ["--batch", "--no-tty"]
|
||
return $ batch ++ defaults ++ toCommand params
|
||
where
|
||
-- be quiet, even about checking the trustdb
|
||
defaults = ["--quiet", "--trust-model", "always"]
|
||
|
||
{- Runs gpg with some params and returns its stdout, strictly. -}
|
||
readStrict :: [CommandParam] -> IO String
|
||
readStrict params = do
|
||
params' <- stdParams params
|
||
pOpen ReadFromPipe "gpg" params' hGetContentsStrict
|
||
|
||
{- Runs gpg, piping an input value to it, and returning its stdout,
|
||
- strictly. -}
|
||
pipeStrict :: [CommandParam] -> String -> IO String
|
||
pipeStrict params input = do
|
||
params' <- stdParams params
|
||
(pid, fromh, toh) <- hPipeBoth "gpg" params'
|
||
_ <- forkIO $ finally (hPutStr toh input) (hClose toh)
|
||
output <- hGetContentsStrict fromh
|
||
forceSuccess pid
|
||
return output
|
||
|
||
{- Runs gpg with some parameters, first feeding it a passphrase via
|
||
- --passphrase-fd, then feeding it an input, and passing a handle
|
||
- to its output to an action.
|
||
-
|
||
- Note that to avoid deadlock with the cleanup stage,
|
||
- the action must fully consume gpg's input before returning. -}
|
||
passphraseHandle :: [CommandParam] -> String -> IO L.ByteString -> (Handle -> IO a) -> IO a
|
||
passphraseHandle params passphrase a b = do
|
||
-- pipe the passphrase into gpg on a fd
|
||
(frompipe, topipe) <- createPipe
|
||
_ <- forkIO $ do
|
||
toh <- fdToHandle topipe
|
||
hPutStrLn toh passphrase
|
||
hClose toh
|
||
let Fd pfd = frompipe
|
||
let passphrasefd = [Param "--passphrase-fd", Param $ show pfd]
|
||
|
||
params' <- stdParams $ passphrasefd ++ params
|
||
(pid, fromh, toh) <- hPipeBoth "gpg" params'
|
||
pid2 <- forkProcess $ do
|
||
L.hPut toh =<< a
|
||
hClose toh
|
||
exitSuccess
|
||
hClose toh
|
||
ret <- b fromh
|
||
|
||
-- cleanup
|
||
forceSuccess pid
|
||
_ <- getProcessStatus True False pid2
|
||
closeFd frompipe
|
||
return ret
|
||
|
||
{- Finds gpg public keys matching some string. (Could be an email address,
|
||
- a key id, or a name. -}
|
||
findPubKeys :: String -> IO KeyIds
|
||
findPubKeys for = KeyIds . parse <$> readStrict params
|
||
where
|
||
params = [Params "--with-colons --list-public-keys", Param for]
|
||
parse = map keyIdField . filter pubKey . lines
|
||
pubKey = isPrefixOf "pub:"
|
||
keyIdField s = split ":" s !! 4
|
||
|
||
|
||
|
||
{- A test key. This is provided pre-generated since generating a new gpg
|
||
- key is too much work (requires too much entropy) for a test suite to
|
||
- do.
|
||
-
|
||
- This key was generated with no exipiration date, and a small keysize.
|
||
- It has an empty passphrase. -}
|
||
testKeyId :: String
|
||
testKeyId = "129D6E0AC537B9C7"
|
||
testKey :: String
|
||
testKey = keyBlock True
|
||
[ "mI0ETvFAZgEEAKnqwWgZqznMhi1RQExem2H8t3OyKDxaNN3rBN8T6LWGGqAYV4wT"
|
||
, "r8In5tfsnz64bKpE1Qi68JURFwYmthgUL9N48tbODU8t3xzijdjLOSaTyqkH1ik6"
|
||
, "EyulfKN63xLne9i4F9XqNwpiZzukXYbNfHkDA2yb0M6g4UFKLY/fNzGXABEBAAG0"
|
||
, "W2luc2VjdXJlIHRlc3Qga2V5ICh0aGlzIGlzIGEgdGVzdCBrZXksIGRvIG5vdCB1"
|
||
, "c2UgZm9yIGFjdHVhbCBlbmNyeXB0aW9uKSA8dGVzdEBleGFtcGxlLmNvbT6IuAQT"
|
||
, "AQgAIgUCTvFAZgIbAwYLCQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQEp1uCsU3"
|
||
, "uceQ9wP/YMd1f0+/eLLcwGXNBvGqyVhUOfAKknO1bMzGbqTsq9g60qegy/cldqee"
|
||
, "xVxNfy0VN//JeMfgdcb8+RgJYLoaMrTy9CcsUcFPxtwN9tcLmsM0V2/fNmmFBO9t"
|
||
, "v75iH+zeFbNg0/FbPkHiN6Mjw7P2gXYKQXgTvQZBWaphk8oQlBm4jQRO8UBmAQQA"
|
||
, "vdi50M/WRCkOLt2RsUve8V8brMWYTJBJTTWoHUeRr82v4NCdX7OE1BsoVK8cy/1Q"
|
||
, "Y+gLOH9PqinuGGNWRmPV2Ju/RYn5H7sdewXA8E80xWhc4phHRMJ8Jjhg/GVPamkJ"
|
||
, "8B5zeKF0jcLFl7cuVdOyQakhoeDWJd0CyfW837nmPtMAEQEAAYifBBgBCAAJBQJO"
|
||
, "8UBmAhsMAAoJEBKdbgrFN7nHclAEAKBShuP/toH03atDUQTbGE34CA4yEC9BVghi"
|
||
, "7kviOZlOz2s8xAfp/8AYsrECx1kgbXcA7JD902eNyp7NzXsdJX0zJwHqiuZW0XlD"
|
||
, "T8ZJu4qrYRYgl/790WPESZ+ValvHD/fqkR38RF4tfxvyoMhhp0roGmJY33GASIG/"
|
||
, "+gQkDF9/"
|
||
, "=1k11"
|
||
]
|
||
testSecretKey :: String
|
||
testSecretKey = keyBlock False
|
||
[ "lQHYBE7xQGYBBACp6sFoGas5zIYtUUBMXpth/Ldzsig8WjTd6wTfE+i1hhqgGFeM"
|
||
, "E6/CJ+bX7J8+uGyqRNUIuvCVERcGJrYYFC/TePLWzg1PLd8c4o3Yyzkmk8qpB9Yp"
|
||
, "OhMrpXyjet8S53vYuBfV6jcKYmc7pF2GzXx5AwNsm9DOoOFBSi2P3zcxlwARAQAB"
|
||
, "AAP+PlRboxy7Z0XjuG70N6+CrzSddQbW5KCwgPFrxYsPk7sAPFcBkmRMVlv9vZpS"
|
||
, "phbP4bvDK+MrSntM51g+9uE802yhPhSWdmEbImiWfV2ucEhlLjD8gw7JDex9XZ0a"
|
||
, "EbTOV56wOsILuedX/jF/6i6IQzy5YmuMeo+ip1XQIsIN+80CAMyXepOBJgHw/gBD"
|
||
, "VdXh/l//vUkQQlhInQYwgkKbr0POCTdr8DM1qdKLcUD9Q1khgNRp0vZGGz+5xsrc"
|
||
, "KaODUlMCANSczLJcYWa8yPqB3S14yTe7qmtDiOS362+SeVUwQA7eQ06PcHLPsN+p"
|
||
, "NtWoHRfYazxrs+g0JvmoQOYdj4xSQy0CAMq7H/l6aeG1n8tpyMxqE7OvBOsvzdu5"
|
||
, "XS7I1AnwllVFgvTadVvqgf7b+hdYd91doeHDUGqSYO78UG1GgaBHJdylqrRbaW5z"
|
||
, "ZWN1cmUgdGVzdCBrZXkgKHRoaXMgaXMgYSB0ZXN0IGtleSwgZG8gbm90IHVzZSBm"
|
||
, "b3IgYWN0dWFsIGVuY3J5cHRpb24pIDx0ZXN0QGV4YW1wbGUuY29tPoi4BBMBCAAi"
|
||
, "BQJO8UBmAhsDBgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAAKCRASnW4KxTe5x5D3"
|
||
, "A/9gx3V/T794stzAZc0G8arJWFQ58AqSc7VszMZupOyr2DrSp6DL9yV2p57FXE1/"
|
||
, "LRU3/8l4x+B1xvz5GAlguhoytPL0JyxRwU/G3A321wuawzRXb982aYUE722/vmIf"
|
||
, "7N4Vs2DT8Vs+QeI3oyPDs/aBdgpBeBO9BkFZqmGTyhCUGZ0B2ARO8UBmAQQAvdi5"
|
||
, "0M/WRCkOLt2RsUve8V8brMWYTJBJTTWoHUeRr82v4NCdX7OE1BsoVK8cy/1QY+gL"
|
||
, "OH9PqinuGGNWRmPV2Ju/RYn5H7sdewXA8E80xWhc4phHRMJ8Jjhg/GVPamkJ8B5z"
|
||
, "eKF0jcLFl7cuVdOyQakhoeDWJd0CyfW837nmPtMAEQEAAQAD/RaVtFFTkF1udun7"
|
||
, "YOwzJvQXCO9OWHZvSdEeG4BUNdAwy4YWu0oZzKkBDBS6+lWILqqb/c28U4leUJ1l"
|
||
, "H+viz5svN9BWWyj/UpI00uwUo9JaIqalemwfLx6vsh69b54L1B4exLZHYGLvy/B3"
|
||
, "5T6bT0gpOE+53BRtKcJaOh/McQeJAgDTOCBU5weWOf6Bhqnw3Vr/gRfxntAz2okN"
|
||
, "gqz/h79mWbCc/lHKoYQSsrCdMiwziHSjXwvehUrdWE/AcomtW0vbAgDmGJqJ2fNr"
|
||
, "HvdsGx4Ld/BxyiZbCURJLUQ5CwzfHGIvBu9PMT8zM26NOSncaXRjxDna2Ggh8Uum"
|
||
, "ANEwbnhxFwZpAf9L9RLYIMTtAqwBjfXJg/lHcc2R+VP0hL5c8zFz+S+w7bRqINwL"
|
||
, "ff1JstKuHT2nJnu0ustK66by8YI3T0hDFFahnNCInwQYAQgACQUCTvFAZgIbDAAK"
|
||
, "CRASnW4KxTe5x3JQBACgUobj/7aB9N2rQ1EE2xhN+AgOMhAvQVYIYu5L4jmZTs9r"
|
||
, "PMQH6f/AGLKxAsdZIG13AOyQ/dNnjcqezc17HSV9MycB6ormVtF5Q0/GSbuKq2EW"
|
||
, "IJf+/dFjxEmflWpbxw/36pEd/EReLX8b8qDIYadK6BpiWN9xgEiBv/oEJAxffw=="
|
||
, "=LDsg"
|
||
]
|
||
keyBlock :: Bool -> [String] -> String
|
||
keyBlock public ls = unlines
|
||
[ "-----BEGIN PGP "++t++" KEY BLOCK-----"
|
||
, "Version: GnuPG v1.4.11 (GNU/Linux)"
|
||
, ""
|
||
, unlines ls
|
||
, "-----END PGP "++t++" KEY BLOCK-----"
|
||
]
|
||
where
|
||
t
|
||
| public = "PUBLIC"
|
||
| otherwise = "PRIVATE"
|
||
|
||
{- Runs an action using gpg in a test harness, in which gpg does
|
||
- not use ~/.gpg/, but a directory with the test key set up to be used. -}
|
||
testHarness :: IO a -> IO a
|
||
testHarness a = do
|
||
orig <- getEnv var
|
||
bracket setup (cleanup orig) (const a)
|
||
where
|
||
var = "GNUPGHOME"
|
||
|
||
setup = do
|
||
base <- getTemporaryDirectory
|
||
dir <- mktmpdir $ base </> "gpgtmpXXXXXX"
|
||
setEnv var dir True
|
||
_ <- pipeStrict [Params "--import -q"] $ unlines
|
||
[testSecretKey, testKey]
|
||
return dir
|
||
|
||
cleanup orig tmpdir = removeDirectoryRecursive tmpdir >> reset orig
|
||
reset (Just v) = setEnv var v True
|
||
reset _ = unsetEnv var
|
||
|
||
{- Tests the test harness. -}
|
||
testTestHarness :: IO Bool
|
||
testTestHarness = do
|
||
keys <- testHarness $ findPubKeys testKeyId
|
||
return $ KeyIds [testKeyId] == keys
|