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authorIngela Anderton Andin <ingela@erlang.org>2012-05-23 10:49:40 +0200
committerIngela Anderton Andin <ingela@erlang.org>2012-06-08 16:52:06 +0200
commit68a055e261d70d3053694efddc1e5a26bf3553f1 (patch)
treec40c234839c5a93a8166f0e9b94987662141ef9f /lib/ssl/src
parentb334632a0fb241d60cfe6c69fb0800047cd598ff (diff)
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ssl: Simpler PEM cache
Diffstat (limited to 'lib/ssl/src')
-rw-r--r--lib/ssl/src/ssl_certificate_db.erl193
-rw-r--r--lib/ssl/src/ssl_connection.erl75
-rw-r--r--lib/ssl/src/ssl_manager.erl108
3 files changed, 211 insertions, 165 deletions
diff --git a/lib/ssl/src/ssl_certificate_db.erl b/lib/ssl/src/ssl_certificate_db.erl
index ed6e94d445..80fdc5201a 100644
--- a/lib/ssl/src/ssl_certificate_db.erl
+++ b/lib/ssl/src/ssl_certificate_db.erl
@@ -24,13 +24,18 @@
-module(ssl_certificate_db).
-include("ssl_internal.hrl").
-include_lib("public_key/include/public_key.hrl").
+-include_lib("kernel/include/file.hrl").
-export([create/0, remove/1, add_trusted_certs/3,
- remove_trusted_certs/2, lookup_trusted_cert/4, foldl/3,
- lookup_cached_certs/2, cache_pem_file/4, uncache_pem_file/2, lookup/2]).
+ remove_trusted_certs/2, insert/3, remove/2, clean/1,
+ ref_count/3, lookup_trusted_cert/4, foldl/3,
+ lookup_cached_pem/2, cache_pem_file/3, cache_pem_file/4,
+ lookup/2]).
-type time() :: {non_neg_integer(), non_neg_integer(), non_neg_integer()}.
+-define(NOT_TO_BIG, 10).
+
%%====================================================================
%% Internal application API
%%====================================================================
@@ -43,9 +48,14 @@
%% the process that called create may call the other functions.
%%--------------------------------------------------------------------
create() ->
- [ets:new(ssl_otp_certificate_db, [set, protected]),
- ets:new(ssl_file_to_ref, [set, protected]),
- ets:new(ssl_pid_to_file, [bag, private])].
+ [%% Let connection process delete trusted certs
+ %% that can only belong to one connection. (Supplied directly
+ %% on DER format to ssl:connect/listen.)
+ ets:new(ssl_otp_cacertificate_db, [set, public]),
+ %% Let connection processes call ref_count/3 directly
+ ets:new(ssl_otp_ca_file_ref, [set, public]),
+ ets:new(ssl_otp_pem_cache, [set, protected])
+ ].
%%--------------------------------------------------------------------
-spec remove([db_handle()]) -> term().
@@ -53,7 +63,9 @@ create() ->
%% Description: Removes database db
%%--------------------------------------------------------------------
remove(Dbs) ->
- lists:foreach(fun(Db) -> true = ets:delete(Db) end, Dbs).
+ lists:foreach(fun(Db) ->
+ true = ets:delete(Db)
+ end, Dbs).
%%--------------------------------------------------------------------
-spec lookup_trusted_cert(db_handle(), certdb_ref(), serialnumber(), issuer()) ->
@@ -72,8 +84,10 @@ lookup_trusted_cert(DbHandle, Ref, SerialNumber, Issuer) ->
{ok, Certs}
end.
-lookup_cached_certs(DbHandle, File) ->
- ets:lookup(DbHandle, {file, crypto:md5(File)}).
+lookup_cached_pem([_, _, PemChache], MD5) ->
+ lookup_cached_pem(PemChache, MD5);
+lookup_cached_pem(PemChache, MD5) ->
+ lookup(MD5, PemChache).
%%--------------------------------------------------------------------
-spec add_trusted_certs(pid(), string() | {der, list()}, [db_handle()]) -> {ok, [db_handle()]}.
@@ -86,84 +100,68 @@ add_trusted_certs(_Pid, {der, DerList}, [CerDb, _,_]) ->
NewRef = make_ref(),
add_certs_from_der(DerList, NewRef, CerDb),
{ok, NewRef};
-add_trusted_certs(Pid, File, [CertsDb, FileToRefDb, PidToFileDb]) ->
+
+add_trusted_certs(_Pid, File, [CertsDb, RefDb, PemChache] = Db) ->
+ {ok, #file_info{mtime = LastWrite}} = file:read_file_info(File),
MD5 = crypto:md5(File),
- Ref = case lookup(MD5, FileToRefDb) of
- undefined ->
- NewRef = make_ref(),
- add_certs_from_file(File, NewRef, CertsDb),
- insert(MD5, NewRef, 1, FileToRefDb),
- NewRef;
- [OldRef] ->
- ref_count(MD5,FileToRefDb,1),
- OldRef
- end,
- insert(Pid, MD5, PidToFileDb),
- {ok, Ref}.
+ case lookup_cached_pem(Db, MD5) of
+ [{Mtime, Content}] ->
+ case LastWrite of
+ Mtime ->
+ Ref0 = make_ref(),
+ insert(Ref0, [], 1, RefDb),
+ insert(MD5, {Mtime, Content, Ref0}, PemChache),
+ add_certs_from_pem(Content, Ref0, CertsDb),
+ {ok, Ref0};
+ _ ->
+ new_trusted_cert_entry(File, LastWrite, Db)
+ end;
+ [{Mtime, _Content, Ref0}] ->
+ case LastWrite of
+ Mtime ->
+ ref_count(Ref0, RefDb, 1),
+ {ok, Ref0};
+ _ ->
+ new_trusted_cert_entry(File, LastWrite, Db)
+ end;
+ undefined ->
+ new_trusted_cert_entry(File, LastWrite, Db)
+ end.
%%--------------------------------------------------------------------
--spec cache_pem_file(pid(), string(), time(), [db_handle()]) -> term().
+-spec cache_pem_file(string(), time(), [db_handle()]) -> term().
+-spec cache_pem_file(reference(), string(), time(), [db_handle()]) -> term().
%%
%% Description: Cache file as binary in DB
%%--------------------------------------------------------------------
-cache_pem_file(Pid, File, Time, [CertsDb, _FileToRefDb, PidToFileDb]) ->
+cache_pem_file(File, Time, [_CertsDb, _RefDb, PemChache]) ->
{ok, PemBin} = file:read_file(File),
Content = public_key:pem_decode(PemBin),
MD5 = crypto:md5(File),
- insert({file, MD5}, {Time, Content}, CertsDb),
- insert(Pid, MD5, PidToFileDb),
+ insert(MD5, {Time, Content}, PemChache),
{ok, Content}.
-%--------------------------------------------------------------------
--spec uncache_pem_file(string(), [db_handle()]) -> no_return().
-%%
-%% Description: If a cached file is no longer valid (changed on disk)
-%% we must terminate the connections using the old file content, and
-%% when those processes are finish the cache will be cleaned. It is
-%% a rare but possible case a new ssl client/server is started with
-%% a filename with the same name as previously started client/server
-%% but with different content.
-%% --------------------------------------------------------------------
-uncache_pem_file(File, [_CertsDb, _FileToRefDb, PidToFileDb]) ->
- Pids = select(PidToFileDb, [{{'$1', crypto:md5(File)},[],['$$']}]),
- lists:foreach(fun([Pid]) ->
- exit(Pid, shutdown)
- end, Pids).
-
-%%--------------------------------------------------------------------
--spec remove_trusted_certs(pid(), [db_handle()]) -> term().
-
-%%
-%% Description: Removes trusted certs originating from
-%% the file associated to Pid from the runtime database.
-%%--------------------------------------------------------------------
-remove_trusted_certs(Pid, [CertsDb, FileToRefDb, PidToFileDb]) ->
- FileMD5s = lookup(Pid, PidToFileDb),
- delete(Pid, PidToFileDb),
- Clear = fun(MD5) ->
- delete({file,MD5}, CertsDb),
- try
- 0 = ref_count(MD5, FileToRefDb, -1),
- case lookup(MD5, FileToRefDb) of
- [Ref] when is_reference(Ref) ->
- remove_certs(Ref, CertsDb);
- _ -> ok
- end,
- delete(MD5, FileToRefDb)
- catch _:_ ->
- ok
- end
- end,
- case FileMD5s of
- undefined -> ok;
- _ ->
- [Clear(FileMD5) || FileMD5 <- FileMD5s],
- ok
- end.
+cache_pem_file(Ref, File, Time, [_CertsDb, _RefDb, PemChache]) ->
+ {ok, PemBin} = file:read_file(File),
+ Content = public_key:pem_decode(PemBin),
+ MD5 = crypto:md5(File),
+ insert(MD5, {Time, Content, Ref}, PemChache),
+ {ok, Content}.
+
+remove_trusted_certs(Ref, CertsDb) ->
+ remove_certs(Ref, CertsDb).
+
+%%--------------------------------------------------------------------
+-spec remove(term(), db_handle()) -> term().
+%%
+%% Description: Removes an element in a <Db>.
+%%--------------------------------------------------------------------
+remove(Key, Db) ->
+ _ = ets:delete(Db, Key).
%%--------------------------------------------------------------------
-spec lookup(term(), db_handle()) -> term() | undefined.
%%
-%% Description: Looks up an element in a certificat <Db>.
+%% Description: Looks up an element in a <Db>.
%%--------------------------------------------------------------------
lookup(Key, Db) ->
case ets:lookup(Db, Key) of
@@ -186,25 +184,43 @@ lookup(Key, Db) ->
%%--------------------------------------------------------------------
foldl(Fun, Acc0, Cache) ->
ets:foldl(Fun, Acc0, Cache).
-
+
%%--------------------------------------------------------------------
-%%% Internal functions
+-spec ref_count(term(), db_handle(), integer()) -> integer().
+%%
+%% Description: Updates a reference counter in a <Db>.
+%%--------------------------------------------------------------------
+ref_count(Key, Db, N) ->
+ ets:update_counter(Db,Key,N).
+
+%%--------------------------------------------------------------------
+-spec clean(db_handle()) -> term().
+%%
+%% Description: Updates a reference counter in a <Db>.
+%%--------------------------------------------------------------------
+clean(Db) ->
+ case ets:info(Db, size) of
+ N when N < ?NOT_TO_BIG ->
+ ok;
+ _ ->
+ ets:delete_all_objects(Db)
+ end.
+%%--------------------------------------------------------------------
+%%-spec insert(Key::term(), Data::term(), Db::db_handle()) -> no_return().
+%%
+%% Description: Inserts data into <Db>
%%--------------------------------------------------------------------
insert(Key, Data, Db) ->
true = ets:insert(Db, {Key, Data}).
+%%--------------------------------------------------------------------
+%%% Internal functions
+%%--------------------------------------------------------------------
+insert(Key, [], Count, Db) ->
+ true = ets:insert(Db, {Key, Count});
insert(Key, Data, Count, Db) ->
true = ets:insert(Db, {Key, Count, Data}).
-ref_count(Key, Db,N) ->
- ets:update_counter(Db,Key,N).
-
-delete(Key, Db) ->
- _ = ets:delete(Db, Key).
-
-select(Db, MatchSpec)->
- ets:select(Db, MatchSpec).
-
remove_certs(Ref, CertsDb) ->
ets:match_delete(CertsDb, {{Ref, '_', '_'}, '_'}).
@@ -212,10 +228,8 @@ add_certs_from_der(DerList, Ref, CertsDb) ->
Add = fun(Cert) -> add_certs(Cert, Ref, CertsDb) end,
[Add(Cert) || Cert <- DerList].
-add_certs_from_file(File, Ref, CertsDb) ->
+add_certs_from_pem(PemEntries, Ref, CertsDb) ->
Add = fun(Cert) -> add_certs(Cert, Ref, CertsDb) end,
- {ok, PemBin} = file:read_file(File),
- PemEntries = public_key:pem_decode(PemBin),
[Add(Cert) || {'Certificate', Cert, not_encrypted} <- PemEntries].
add_certs(Cert, Ref, CertsDb) ->
@@ -231,3 +245,10 @@ add_certs(Cert, Ref, CertsDb) ->
"it could not be correctly decoded.~n", []),
error_logger:info_report(Report)
end.
+
+new_trusted_cert_entry(File, LastWrite, [CertsDb,RefDb,PemChache] = Db) ->
+ Ref = make_ref(),
+ insert(Ref, [], 1, RefDb),
+ {ok, Content} = cache_pem_file(Ref, File, LastWrite, Db),
+ add_certs_from_pem(Content, Ref, CertsDb),
+ {ok, Ref}.
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index 38dad1c381..2abe2d3a6c 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -83,7 +83,8 @@
diffie_hellman_params, % PKIX: #'DHParameter'{} relevant for server side
diffie_hellman_keys, % {PublicKey, PrivateKey}
premaster_secret, %
- cert_db_ref, % ets_table()
+ file_ref_db, % ets()
+ cert_db_ref, % ref()
from, % term(), where to reply
bytes_to_read, % integer(), # bytes to read in passive mode
user_data_buffer, % binary()
@@ -305,11 +306,12 @@ init([Role, Host, Port, Socket, {SSLOpts0, _} = Options, User, CbInfo]) ->
Hashes0 = ssl_handshake:init_hashes(),
TimeStamp = calendar:datetime_to_gregorian_seconds({date(), time()}),
try ssl_init(SSLOpts0, Role) of
- {ok, Ref, CertDbHandle, CacheHandle, OwnCert, Key, DHParams} ->
+ {ok, Ref, CertDbHandle, FileRefHandle, CacheHandle, OwnCert, Key, DHParams} ->
Session = State0#state.session,
State = State0#state{tls_handshake_hashes = Hashes0,
session = Session#session{own_certificate = OwnCert,
time_stamp = TimeStamp},
+ file_ref_db = FileRefHandle,
cert_db_ref = Ref,
cert_db = CertDbHandle,
session_cache = CacheHandle,
@@ -1000,16 +1002,19 @@ terminate(Reason, connection, #state{negotiated_version = Version,
connection_states = ConnectionStates,
transport_cb = Transport,
socket = Socket, send_queue = SendQueue,
- renegotiation = Renegotiate}) ->
+ renegotiation = Renegotiate} = State) ->
+ handle_trusted_certs_db(State),
notify_senders(SendQueue),
notify_renegotiater(Renegotiate),
BinAlert = terminate_alert(Reason, Version, ConnectionStates),
Transport:send(Socket, BinAlert),
workaround_transport_delivery_problems(Socket, Transport, Reason),
Transport:close(Socket);
+
terminate(Reason, _StateName, #state{transport_cb = Transport,
socket = Socket, send_queue = SendQueue,
- renegotiation = Renegotiate}) ->
+ renegotiation = Renegotiate} = State) ->
+ handle_trusted_certs_db(State),
notify_senders(SendQueue),
notify_renegotiater(Renegotiate),
workaround_transport_delivery_problems(Socket, Transport, Reason),
@@ -1057,12 +1062,12 @@ ssl_init(SslOpts, Role) ->
init_manager_name(SslOpts#ssl_options.erl_dist),
- {ok, CertDbRef, CertDbHandle, CacheHandle, OwnCert} = init_certificates(SslOpts, Role),
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle, OwnCert} = init_certificates(SslOpts, Role),
PrivateKey =
- init_private_key(CertDbHandle, SslOpts#ssl_options.key, SslOpts#ssl_options.keyfile,
+ init_private_key(PemCacheHandle, SslOpts#ssl_options.key, SslOpts#ssl_options.keyfile,
SslOpts#ssl_options.password, Role),
- DHParams = init_diffie_hellman(CertDbHandle, SslOpts#ssl_options.dh, SslOpts#ssl_options.dhfile, Role),
- {ok, CertDbRef, CertDbHandle, CacheHandle, OwnCert, PrivateKey, DHParams}.
+ DHParams = init_diffie_hellman(PemCacheHandle, SslOpts#ssl_options.dh, SslOpts#ssl_options.dhfile, Role),
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, CacheHandle, OwnCert, PrivateKey, DHParams}.
init_manager_name(false) ->
put(ssl_manager, ssl_manager);
@@ -1073,7 +1078,7 @@ init_certificates(#ssl_options{cacerts = CaCerts,
cacertfile = CACertFile,
certfile = CertFile,
cert = Cert}, Role) ->
- {ok, CertDbRef, CertDbHandle, CacheHandle} =
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle} =
try
Certs = case CaCerts of
undefined ->
@@ -1081,36 +1086,36 @@ init_certificates(#ssl_options{cacerts = CaCerts,
_ ->
{der, CaCerts}
end,
- {ok, _, _, _} = ssl_manager:connection_init(Certs, Role)
+ {ok, _, _, _, _, _} = ssl_manager:connection_init(Certs, Role)
catch
Error:Reason ->
handle_file_error(?LINE, Error, Reason, CACertFile, ecacertfile,
erlang:get_stacktrace())
end,
- init_certificates(Cert, CertDbRef, CertDbHandle, CacheHandle, CertFile, Role).
+ init_certificates(Cert, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle, CertFile, Role).
-init_certificates(undefined, CertDbRef, CertDbHandle, CacheHandle, "", _) ->
- {ok, CertDbRef, CertDbHandle, CacheHandle, undefined};
+init_certificates(undefined, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle, "", _) ->
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle, undefined};
-init_certificates(undefined, CertDbRef, CertDbHandle, CacheHandle, CertFile, client) ->
+init_certificates(undefined, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle, CertFile, client) ->
try
- [OwnCert] = ssl_certificate:file_to_certificats(CertFile, CertDbHandle),
- {ok, CertDbRef, CertDbHandle, CacheHandle, OwnCert}
+ [OwnCert] = ssl_certificate:file_to_certificats(CertFile, PemCacheHandle),
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle, OwnCert}
catch _Error:_Reason ->
- {ok, CertDbRef, CertDbHandle, CacheHandle, undefined}
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheHandle, undefined}
end;
-init_certificates(undefined, CertDbRef, CertDbHandle, CacheRef, CertFile, server) ->
+init_certificates(undefined, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheRef, CertFile, server) ->
try
- [OwnCert] = ssl_certificate:file_to_certificats(CertFile, CertDbHandle),
- {ok, CertDbRef, CertDbHandle, CacheRef, OwnCert}
+ [OwnCert] = ssl_certificate:file_to_certificats(CertFile, PemCacheHandle),
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheRef, OwnCert}
catch
Error:Reason ->
handle_file_error(?LINE, Error, Reason, CertFile, ecertfile,
erlang:get_stacktrace())
end;
-init_certificates(Cert, CertDbRef, CertDbHandle, CacheRef, _, _) ->
- {ok, CertDbRef, CertDbHandle, CacheRef, Cert}.
+init_certificates(Cert, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheRef, _, _) ->
+ {ok, CertDbRef, CertDbHandle, FileRefHandle, PemCacheHandle, CacheRef, Cert}.
init_private_key(_, undefined, "", _Password, _Client) ->
undefined;
@@ -1259,7 +1264,7 @@ verify_client_cert(#state{client_certificate_requested = false} = State) ->
State.
do_server_hello(Type, #state{negotiated_version = Version,
- session = #session{session_id = SessId} = Session,
+ session = #session{session_id = SessId},
connection_states = ConnectionStates0,
renegotiation = {Renegotiation, _}}
= State0) when is_atom(Type) ->
@@ -1273,7 +1278,7 @@ do_server_hello(Type, #state{negotiated_version = Version,
new ->
new_server_hello(ServerHello, State);
resumed ->
- resumed_server_hello(State)
+ resumed_server_hello(State)
end.
new_server_hello(#server_hello{cipher_suite = CipherSuite,
@@ -2367,3 +2372,25 @@ get_timeout(#state{ssl_options=#ssl_options{hibernate_after = undefined}}) ->
infinity;
get_timeout(#state{ssl_options=#ssl_options{hibernate_after = HibernateAfter}}) ->
HibernateAfter.
+
+handle_trusted_certs_db(#state{ssl_options = #ssl_options{cacertfile = ""}}) ->
+ %% No trusted certs specified
+ ok;
+handle_trusted_certs_db(#state{cert_db_ref = Ref,
+ cert_db = CertDb,
+ ssl_options = #ssl_options{cacertfile = undefined}}) ->
+ %% Certs provided as DER directly can not be shared
+ %% with other connections and it is safe to delete them when the connection ends.
+ ssl_certificate_db:remove_trusted_certs(Ref, CertDb);
+handle_trusted_certs_db(#state{file_ref_db = undefined}) ->
+ %% Something went wrong early (typically cacertfile does not exist) so there is nothing to handle
+ ok;
+handle_trusted_certs_db(#state{cert_db_ref = Ref,
+ file_ref_db = RefDb,
+ ssl_options = #ssl_options{cacertfile = File}}) ->
+ case ssl_certificate_db:ref_count(Ref, RefDb, -1) of
+ 0 ->
+ ssl_manager:clean_cert_db(Ref, File);
+ _ ->
+ ok
+ end.
diff --git a/lib/ssl/src/ssl_manager.erl b/lib/ssl/src/ssl_manager.erl
index 7ee8f6e9d6..e3bf0a1f92 100644
--- a/lib/ssl/src/ssl_manager.erl
+++ b/lib/ssl/src/ssl_manager.erl
@@ -30,7 +30,7 @@
-export([start_link/1, start_link_dist/1,
connection_init/2, cache_pem_file/2,
lookup_trusted_cert/4,
- new_session_id/1,
+ new_session_id/1, clean_cert_db/2,
register_session/2, register_session/3, invalidate_session/2,
invalidate_session/3]).
@@ -58,8 +58,9 @@
-define('24H_in_sec', 8640).
-define(GEN_UNIQUE_ID_MAX_TRIES, 10).
-define(SESSION_VALIDATION_INTERVAL, 60000).
--define(CERTIFICATE_CACHE_CLEANUP, 30000).
+-define(PEM_CACHE_CLEANUP, 120000).
-define(CLEAN_SESSION_DB, 60000).
+-define(CLEAN_CERT_DB, 500).
%%====================================================================
%% API
@@ -120,6 +121,9 @@ lookup_trusted_cert(DbHandle, Ref, SerialNumber, Issuer) ->
new_session_id(Port) ->
call({new_session_id, Port}).
+clean_cert_db(Ref, File) ->
+ erlang:send_after(?CLEAN_CERT_DB, self(), {clean_cert_db, Ref, File}).
+
%%--------------------------------------------------------------------
-spec register_session(inet:port_number(), #session{}) -> ok.
-spec register_session(host(), inet:port_number(), #session{}) -> ok.
@@ -166,6 +170,7 @@ init([Name, Opts]) ->
SessionCache = CacheCb:init(proplists:get_value(session_cb_init_args, Opts, [])),
Timer = erlang:send_after(SessionLifeTime * 1000,
self(), validate_sessions),
+ erlang:send_after(?PEM_CACHE_CLEANUP, self(), clean_pem_cache),
{ok, #state{certificate_db = CertDb,
session_cache = SessionCache,
session_cache_cb = CacheCb,
@@ -183,21 +188,19 @@ init([Name, Opts]) ->
%%
%% Description: Handling call messages
%%--------------------------------------------------------------------
-handle_call({{connection_init, "", _Role}, Pid}, _From,
- #state{certificate_db = [CertDb |_],
+handle_call({{connection_init, "", _Role}, _Pid}, _From,
+ #state{certificate_db = [CertDb, FileRefDb, PemChace],
session_cache = Cache} = State) ->
- erlang:monitor(process, Pid),
- Result = {ok, make_ref(),CertDb, Cache},
+ Result = {ok, make_ref(),CertDb, FileRefDb, PemChace, Cache},
{reply, Result, State};
handle_call({{connection_init, Trustedcerts, _Role}, Pid}, _From,
- #state{certificate_db = [CertDb|_] =Db,
+ #state{certificate_db = [CertDb, FileRefDb, PemChace] = Db,
session_cache = Cache} = State) ->
- erlang:monitor(process, Pid),
Result =
try
{ok, Ref} = ssl_certificate_db:add_trusted_certs(Pid, Trustedcerts, Db),
- {ok, Ref, CertDb, Cache}
+ {ok, Ref, CertDb, FileRefDb, PemChace, Cache}
catch
_:Reason ->
{error, Reason}
@@ -210,20 +213,16 @@ handle_call({{new_session_id,Port}, _},
Id = new_id(Port, ?GEN_UNIQUE_ID_MAX_TRIES, Cache, CacheCb),
{reply, Id, State};
-handle_call({{cache_pem, File, LastWrite}, Pid}, _,
+
+handle_call({{cache_pem, File, LastWrite}, _Pid}, _,
#state{certificate_db = Db} = State) ->
- try ssl_certificate_db:cache_pem_file(Pid, File, LastWrite, Db) of
+ try ssl_certificate_db:cache_pem_file(File, LastWrite, Db) of
Result ->
{reply, Result, State}
catch
_:Reason ->
{reply, {error, Reason}, State}
- end;
-handle_call({{recache_pem, File, LastWrite}, Pid}, From,
- #state{certificate_db = Db} = State) ->
- ssl_certificate_db:uncache_pem_file(File, Db),
- cast({recache_pem, File, LastWrite, Pid, From}),
- {noreply, State}.
+ end.
%%--------------------------------------------------------------------
-spec handle_cast(msg(), #state{}) -> {noreply, #state{}}.
@@ -259,22 +258,7 @@ handle_cast({invalidate_session, Host, Port,
handle_cast({invalidate_session, Port, #session{session_id = ID} = Session},
#state{session_cache = Cache,
session_cache_cb = CacheCb} = State) ->
- invalidate_session(Cache, CacheCb, {Port, ID}, Session, State);
-
-handle_cast({recache_pem, File, LastWrite, Pid, From},
- #state{certificate_db = [_, FileToRefDb, _]} = State0) ->
- case ssl_certificate_db:lookup(File, FileToRefDb) of
- undefined ->
- {reply, Msg, State} =
- handle_call({{cache_pem, File, LastWrite}, Pid}, From, State0),
- gen_server:reply(From, Msg),
- {noreply, State};
- _ -> %% Send message to self letting cleanup messages be handled
- %% first so that no reference to the old version of file
- %% exists when we cache the new one.
- cast({recache_pem, File, LastWrite, Pid, From}),
- {noreply, State0}
- end.
+ invalidate_session(Cache, CacheCb, {Port, ID}, Session, State).
%%--------------------------------------------------------------------
-spec handle_info(msg(), #state{}) -> {noreply, #state{}}.
@@ -299,23 +283,32 @@ handle_info({delayed_clean_session, Key}, #state{session_cache = Cache,
CacheCb:delete(Cache, Key),
{noreply, State};
-handle_info({'EXIT', _, _}, State) ->
- %% Session validator died!! Do we need to take any action?
- %% maybe error log
+handle_info(clean_pem_cache, #state{certificate_db = [_,_,PemChace]} = State) ->
+ ssl_certificate_db:clean(PemChace),
+ erlang:send_after(?PEM_CACHE_CLEANUP, self(), clean_pem_cache),
{noreply, State};
-handle_info({'DOWN', _Ref, _Type, _Pid, ecacertfile}, State) ->
+handle_info({clean_cert_db, Ref, File},
+ #state{certificate_db = [CertDb,RefDb, PemCache]} = State) ->
+ case ssl_certificate_db:ref_count(Ref, RefDb, 0) of
+ 0 ->
+ MD5 = crypto:md5(File),
+ case ssl_certificate_db:lookup_cached_pem(MD5, PemCache) of
+ [{Mtime, Content, Ref}] ->
+ ssl_certificate_db:insert(MD5, {Mtime, Content}, PemCache);
+ undefined ->
+ ok
+ end,
+ ssl_certificate_db:remove(Ref, RefDb),
+ ssl_certificate_db:remove_trusted_certs(Ref, CertDb);
+ _ ->
+ ok
+ end,
{noreply, State};
-handle_info({'DOWN', _Ref, _Type, Pid, shutdown}, State) ->
- handle_info({remove_trusted_certs, Pid}, State);
-handle_info({'DOWN', _Ref, _Type, Pid, _Reason}, State) ->
- erlang:send_after(?CERTIFICATE_CACHE_CLEANUP, self(),
- {remove_trusted_certs, Pid}),
- {noreply, State};
-handle_info({remove_trusted_certs, Pid},
- #state{certificate_db = Db} = State) ->
- ssl_certificate_db:remove_trusted_certs(Pid, Db),
+handle_info({'EXIT', _, _}, State) ->
+ %% Session validator died!! Do we need to take any action?
+ %% maybe error log
{noreply, State};
handle_info(_Info, State) ->
@@ -388,15 +381,20 @@ session_validation({{Port, _}, Session}, LifeTime) ->
LifeTime.
cache_pem_file(File, LastWrite, DbHandle) ->
- case ssl_certificate_db:lookup_cached_certs(DbHandle,File) of
- [{_, {Mtime, Content}}] ->
- case LastWrite of
- Mtime ->
- {ok, Content};
- _ ->
- call({recache_pem, File, LastWrite})
- end;
- [] ->
+ case ssl_certificate_db:lookup_cached_pem(DbHandle,crypto:md5(File)) of
+ [{Mtime, Content}] ->
+ handle_cached_entry(File, LastWrite, Mtime, Content);
+ [{Mtime, Content,_}] ->
+ handle_cached_entry(File, LastWrite, Mtime, Content);
+ undefined ->
+ call({cache_pem, File, LastWrite})
+ end.
+
+handle_cached_entry(File, LastWrite, Time, Content) ->
+ case LastWrite of
+ Time ->
+ {ok, Content};
+ _ ->
call({cache_pem, File, LastWrite})
end.