From 1ff857dfc7b70c7fe544afb27ab26500237d633f Mon Sep 17 00:00:00 2001
From: Linus Nordberg <linus@nordu.net>
Date: Thu, 1 May 2014 18:04:45 +0200
Subject: Store MTL in database -- we need the meat.

---
 src/plop.erl | 48 +++++++++++++++++++++++-------------------------
 1 file changed, 23 insertions(+), 25 deletions(-)

diff --git a/src/plop.erl b/src/plop.erl
index e5432bc..b55eaff 100644
--- a/src/plop.erl
+++ b/src/plop.erl
@@ -93,29 +93,27 @@ handle_call({sth, Data}, _From,
 
 %%%%%%%%%%%%%%%%%%%%
 
+-spec do_add(timestamped_entry(), public_key:rsa_private_key(), binary(), any()) -> {any(), binary()}.
 do_add(TimestampedEntry, Privkey, LogID, Tree) ->
-    H = crypto:hash(sha256, serialise(TimestampedEntry)),
-    Record = db:find(H),
-    TmpFixm = case Record of
-                  #plop{index = I, spt = S} ->
-                      io:format("Found entry w/ index=~p, SPT: ~p~n", [I, S]),
-                      %% DB consistency check:
-                      %%Record = #plop{hash = H, spt = serialise(Data)}, % FIXME: Remove.
-                      {Tree,                    % State not changed.
-                       S};                      % Cached SPT.
-                  _ ->
-                      NewSPT = spt(LogID, Privkey, TimestampedEntry),
-                      DbData = #plop{index = ht:size(Tree) + 1,
-                                     hash = H,
-                                     spt = NewSPT},
-                      db:add(DbData),
-                      LeafData = #mtl{version = 1,
-                                      leaf_type = timestamped_entry,
-                                      entry = TimestampedEntry},
-                      {ht:append(Tree, serialise(LeafData)), % New tree.
-                       NewSPT}            % New SPT.
-              end,
-    TmpFixm.
+    MTL = #mtl{entry = TimestampedEntry},
+    MTL_text = serialise(MTL),
+    DB_hash = crypto:hash(sha256, MTL_text),
+    case db:find(DB_hash) of
+        #plop{index = I, mtl = M, spt_text = SPT} ->
+            io:format("Found entry: index=~p, MTL: ~p, SPT: ~p~n", [I, M, SPT]),
+            %% DB consistency check:
+            %%Record = #plop{hash = H, spt = serialise(Data)}, % FIXME: Remove.
+            {Tree, SPT};              % State not changed, cached SPT.
+        _ ->
+            NewSPT = spt(LogID, Privkey, TimestampedEntry),
+            DB_data = #plop{index = ht:size(Tree) + 1,
+                            hash = DB_hash,
+                            mtl = MTL,
+                            spt_text = NewSPT},
+            db:add(DB_data),
+            {ht:append(Tree, MTL_text),         % New tree.
+             NewSPT}                            % New SPT.
+    end.
     
 %% @doc Signed Plop Timestamp, conformant to an SCT in RFC6962 3.2 and
 %% RFC5246 4.7.
@@ -286,12 +284,12 @@ serialise_test_() ->
                                     signed_entry = <<"foo">>})))].
 add_test_() ->
     {ok, S} = init(["test/rsakey.pem", "sikrit"]),
-    [?_assertEqual(
-        <<"fixme">>,
+    {_Tree, SPT} =
         do_add(#timestamped_entry{
                   timestamp = 4711,
                   entry_type = test,
                   entry = <<"some data">>},
                S#state.privkey,
                S#state.logid,
-               S#state.hashtree))].
+               S#state.hashtree),
+    [?_assertEqual(<<"fixme:SPT">>, SPT)].
-- 
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