enforce retrievalSecurityPolicy
Leveraged the existing verification code by making it also check the retrievalSecurityPolicy. Also, prevented getViaTmp from running the download action at all when the retrievalSecurityPolicy is going to prevent verifying and so storing it. Added annex.security.allow-unverified-downloads. A per-remote version would be nice to have too, but would need more plumbing, so KISS. (Bill the Cat reference not too over the top I hope. The point is to make this something the user reads the documentation for before using.) A few calls to verifyKeyContent and getViaTmp, that don't involve downloads from remotes, have RetrievalAllKeysSecure hard-coded. It was also hard-coded for P2P.Annex and Command.RecvKey, to match the values of the corresponding remotes. A few things use retrieveKeyFile/retrieveKeyFileCheap without going through getViaTmp. * Command.Fsck when downloading content from a remote to verify it. That content does not get into the annex, so this is ok. * Command.AddUrl when using a remote to download an url; this is new content being added, so this is ok. This commit was sponsored by Fernando Jimenez on Patreon.
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18 changed files with 131 additions and 34 deletions
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@ -179,7 +179,7 @@ test st r k =
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Just b -> case Backend.verifyKeyContent b of
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Nothing -> return True
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Just verifier -> verifier k (key2file k)
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get = getViaTmp (RemoteVerify r) k $ \dest ->
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get = getViaTmp (Remote.retrievalSecurityPolicy r) (RemoteVerify r) k $ \dest ->
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Remote.retrieveKeyFile r k (AssociatedFile Nothing)
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dest nullMeterUpdate
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store = Remote.storeKey r k (AssociatedFile Nothing) nullMeterUpdate
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@ -220,7 +220,7 @@ testExportTree st (Just _) ea k1 k2 =
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retrieveexport k = withTmpFile "exported" $ \tmp h -> do
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liftIO $ hClose h
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ifM (Remote.retrieveExport ea k testexportlocation tmp nullMeterUpdate)
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( verifyKeyContent AlwaysVerify UnVerified k tmp
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( verifyKeyContent RetrievalAllKeysSecure AlwaysVerify UnVerified k tmp
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, return False
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)
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checkpresentexport k = Remote.checkPresentExport ea k testexportlocation
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@ -238,10 +238,10 @@ testUnavailable st r k =
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, check (`notElem` [Right True, Right False]) "checkPresent" $
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Remote.checkPresent r k
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, check (== Right False) "retrieveKeyFile" $
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getViaTmp (RemoteVerify r) k $ \dest ->
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getViaTmp (Remote.retrievalSecurityPolicy r) (RemoteVerify r) k $ \dest ->
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Remote.retrieveKeyFile r k (AssociatedFile Nothing) dest nullMeterUpdate
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, check (== Right False) "retrieveKeyFileCheap" $
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getViaTmp (RemoteVerify r) k $ \dest -> unVerified $
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getViaTmp (Remote.retrievalSecurityPolicy r) (RemoteVerify r) k $ \dest -> unVerified $
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Remote.retrieveKeyFileCheap r k (AssociatedFile Nothing) dest
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]
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where
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