ssl: File handling optimization

Avoid cach validation with file:file_info/2 as this i too expensive and
causes a bottleneck in the file server. Instead we expose a new API function
ssl:clear_pem_cache/0 to deal with the problem. As we think it will be
of occasional use and the normal case is that the cache will be valid we think
it is the right thing to do.

Convert file paths to binary representation in the ssl API module to
avoid uncessarry calls in file later on.

Also add sanity checks for openssl versions in testsuite due to new
openssl bugs.

2 files changed, 16 insertions, 1 deletions

diff --git a/lib/ssl/test/ssl_basic_SUITE.erl b/lib/ssl/test/ssl_basic_SUITE.erl
index 590ecf33ca..0618628df2 100644
--- a/lib/ssl/test/ssl_basic_SUITE.erl
+++ b/lib/ssl/test/ssl_basic_SUITE.erl
@@ -3649,6 +3649,8 @@ no_reuses_session_server_restart_new_cert_file(Config) when is_list(Config) ->
     ssl_test_lib:close(Server),
     ssl_test_lib:close(Client0),
 
+    ssl:clear_pem_cache(),
+
     NewServerOpts = new_config(PrivDir, DsaServerOpts),
 
     Server1 =
diff --git a/lib/ssl/test/ssl_to_openssl_SUITE.erl b/lib/ssl/test/ssl_to_openssl_SUITE.erl
index 01fca1f166..8197e14b64 100644
--- a/lib/ssl/test/ssl_to_openssl_SUITE.erl
+++ b/lib/ssl/test/ssl_to_openssl_SUITE.erl
@@ -112,6 +112,9 @@ special_init(TestCase, Config)
 special_init(ssl2_erlang_server_openssl_client, Config) ->
     check_sane_openssl_sslv2(Config);
 
+special_init(ciphers_dsa_signed_certs, Config) ->
+    check_sane_openssl_dsa(Config);
+
 special_init(_, Config) ->
     Config.
     
@@ -1440,14 +1443,24 @@ check_sane_openssl_renegotaite(Config) ->
 	    {skip, "Known renegotiation bug in OppenSSL"};
 	"OpenSSL 0.9.7" ++ _ ->
 	    {skip, "Known renegotiation bug in OppenSSL"};
+	"OpenSSL 1.0.1c" ++ _ ->
+	    {skip, "Known renegotiation bug in OppenSSL"};
 	_ ->
 	    Config
     end.
 
 check_sane_openssl_sslv2(Config) ->
     case os:cmd("openssl version") of
-	"OpenSSL 1.0.0" ++ _ ->
+	"OpenSSL 1." ++ _ ->
 	    {skip, "sslv2 by default turned of in 1.*"};
 	_ ->
 	    Config
     end.
+
+check_sane_openssl_dsa(Config) ->
+    case os:cmd("openssl version") of
+	"OpenSSL 1.0.1" ++ _ ->
+	    {skip, "known dsa bug in openssl"};
+	_ ->
+	    Config
+    end.