privdata/relocate

better than symlinks because this way no conflict can ever occur

and, commit from hook

1 files changed, 18 insertions, 2 deletions

diff --git a/src/Propellor/PrivData/Paths.hs b/src/Propellor/PrivData/Paths.hs
index 3d0d8a58..7410370b 100644
--- a/src/Propellor/PrivData/Paths.hs
+++ b/src/Propellor/PrivData/Paths.hs
@@ -1,15 +1,31 @@
 module Propellor.PrivData.Paths where
 
+import Utility.Exception
 import System.FilePath
+import Control.Applicative
+import Prelude
 
 privDataDir :: FilePath
 privDataDir = "privdata"
 
-privDataFile :: FilePath
-privDataFile = privDataDir </> "privdata.gpg"
+privDataFile :: IO FilePath
+privDataFile = allowRelocate $ privDataDir </> "privdata.gpg"
+
+privDataKeyring :: IO FilePath
+privDataKeyring = allowRelocate $ privDataDir </> "keyring.gpg"
 
 privDataLocal :: FilePath
 privDataLocal = privDataDir </> "local"
 
 privDataRelay :: String -> FilePath
 privDataRelay host = privDataDir </> "relay" </> host
+
+-- Allow relocating files in privdata, by checking for a file
+-- privdata/relocate, which contains the path to a subdirectory that
+-- contains the files.
+allowRelocate :: FilePath -> IO FilePath
+allowRelocate f = reloc . lines
+	<$> catchDefaultIO "" (readFile (privDataDir </> "relocate"))
+  where
+	reloc (p:_) | not (null p) = privDataDir </> p </> takeFileName f
+	reloc _ = f