add per-remote-type info

Now `git annex info $remote` shows info specific to the type of the remote,
for example, it shows the rsync url.

Remote types that support encryption or chunking also include that in their
info.

This commit was sponsored by Ævar Arnfjörð Bjarmason.

4 files changed, 28 insertions, 0 deletions

diff --git a/Remote/Helper/Chunked.hs b/Remote/Helper/Chunked.hs
index eb5dbc793..806fab542 100644
--- a/Remote/Helper/Chunked.hs
+++ b/Remote/Helper/Chunked.hs
@@ -8,6 +8,7 @@
 module Remote.Helper.Chunked (
 	ChunkSize,
 	ChunkConfig(..),
+	describeChunkConfig,
 	getChunkConfig,
 	storeChunks,
 	removeChunks,
@@ -34,6 +35,14 @@ data ChunkConfig
 	| LegacyChunks ChunkSize
 	deriving (Show)
 
+describeChunkConfig :: ChunkConfig -> String
+describeChunkConfig NoChunks = "none"
+describeChunkConfig (UnpaddedChunks sz) = describeChunkSize sz ++ "chunks"
+describeChunkConfig (LegacyChunks sz) = describeChunkSize sz ++ " chunks (old style)"
+
+describeChunkSize :: ChunkSize -> String
+describeChunkSize sz = roughSize storageUnits False (fromIntegral sz)
+
 noChunks :: ChunkConfig -> Bool
 noChunks NoChunks = True
 noChunks _ = False
diff --git a/Remote/Helper/Encryptable.hs b/Remote/Helper/Encryptable.hs
index 9a8e9ba5b..5e342803d 100644
--- a/Remote/Helper/Encryptable.hs
+++ b/Remote/Helper/Encryptable.hs
@@ -16,6 +16,7 @@ module Remote.Helper.Encryptable (
 	cipherKey,
 	storeCipher,
 	extractCipher,
+	describeEncryption,
 ) where
 
 import qualified Data.Map as M
@@ -157,3 +158,10 @@ extractCipher c = case (M.lookup "cipher" c,
 	_ -> Nothing
   where
 	readkeys = KeyIds . split ","
+
+describeEncryption :: RemoteConfig -> String
+describeEncryption c = case extractCipher c of
+	Nothing -> "not encrypted"
+	(Just (SharedCipher _)) -> "encrypted (encryption key stored in git repository)"
+	(Just (EncryptedCipher _ _ (KeyIds { keyIds = ks }))) ->
+		"encrypted (to gpg keys: " ++ unwords ks ++ ")"
diff --git a/Remote/Helper/Git.hs b/Remote/Helper/Git.hs
index b405fd358..156d7ac28 100644
--- a/Remote/Helper/Git.hs
+++ b/Remote/Helper/Git.hs
@@ -30,3 +30,8 @@ guardUsable :: Git.Repo -> Annex a -> Annex a -> Annex a
 guardUsable r fallback a
 	| Git.repoIsLocalUnknown r = fallback
 	| otherwise = a
+
+gitRepoInfo :: Git.Repo -> [(String, String)]
+gitRepoInfo r =
+	[ ("repository location", Git.repoLocation r)
+	]
diff --git a/Remote/Helper/Special.hs b/Remote/Helper/Special.hs
index 4738180a8..181d7548f 100644
--- a/Remote/Helper/Special.hs
+++ b/Remote/Helper/Special.hs
@@ -168,6 +168,12 @@ specialRemote' cfg c preparestorer prepareretriever prepareremover preparecheckp
 			(cost baser)
 			(const $ cost baser + encryptedRemoteCostAdj)
 			(extractCipher c)
+		, getInfo = do
+			l <- getInfo baser
+			return $ l ++
+				[ ("encryption", describeEncryption c)
+				, ("chunking", describeChunkConfig (chunkConfig cfg))
+				]
 		}
 	cip = cipherKey c
 	gpgopts = getGpgEncParams encr