Verify that database entry actually contains the certificate

1 files changed, 41 insertions, 0 deletions

diff --git a/verifycert.erl b/verifycert.erl
new file mode 100755
index 0000000..e501d6d
--- /dev/null
+++ b/verifycert.erl
@@ -0,0 +1,41 @@
+#!/usr/bin/env escript
+%% -*- erlang -*-
+%%! -pa ebin -pa lib/catlfish-0.2.0-dev.ez/catlfish-0.2.0-dev/ebin -pa lib/lager-2.1.1.ez/lager-2.1.1/ebin
+
+write_reply(Bin) ->
+    Length = size(Bin),
+    file:write(standard_io, <<Length:32, Bin/binary>>).
+
+verify(Certs, DBEntry) ->
+    try
+        Chain = catlfish:chain_from_entry(DBEntry),
+        %% XXX: doesn't verify that MTL is derived from Chain
+        case x509:normalise_chain(Certs, Chain) of
+            {ok, _} ->
+                write_reply(<<0:8>>);
+            {error, Reason} ->
+                ReasonBin = list_to_binary(io_lib:format("~p", [Reason])),
+            write_reply(<<1:8, ReasonBin/binary>>)
+        end
+    catch
+        Type:What ->
+            [CrashFunction | Stack] = erlang:get_stacktrace(),
+            ErrorBin = list_to_binary(io_lib:format("Crash: ~p ~p~n~p~n~p~n", [Type, What, CrashFunction, Stack])),
+            write_reply(<<2:8, ErrorBin/binary>>)
+    end.
+
+loop(Certs) ->
+    {ok, LengthBin} = file:read(standard_io, 4),
+    <<Length:32>> = list_to_binary(LengthBin),
+    case Length of
+        0 ->
+            none;
+        _ ->
+            {ok, DBEntry} = file:read(standard_io, Length),
+            verify(Certs, list_to_binary(DBEntry)),
+            loop(Certs)
+    end.
+
+main(_) ->
+    Certs = x509:read_pemfiles_from_dir("tests/known_roots/"),
+    loop(Certs).