New SSL test framework

Currently, SSL tests are configured via command-line switches to
ssltest.c. This results in a lot of duplication between ssltest.c and
apps, and a complex setup. ssltest.c is also simply old and needs
maintenance.

Instead, we already have a way to configure SSL servers and clients, so
we leverage that. SSL tests can now be configured from a configuration
file. Test servers and clients are configured using the standard
ssl_conf module. Additional test settings are configured via a test
configuration.

Moreover, since the CONF language involves unnecessary boilerplate, the
test conf itself is generated from a shorter Perl syntax.

The generated testcase files are checked in to the repo to make
it easier to verify that the intended test cases are in fact run; and to
simplify debugging failures.

To demonstrate the approach, min/max protocol tests are converted to the
new format. This change also fixes MinProtocol and MaxProtocol
handling. It was previously requested that an SSL_CTX have both the
server and client flags set for these commands; this clearly can never work.

Guide to this PR:
 - test/ssl_test.c - test framework
 - test/ssl_test_ctx.* - test configuration structure
 - test/handshake_helper.* - new SSL test handshaking code
 - test/ssl-tests/ - test configurations
 - test/generate_ssl_tests.pl - script for generating CONF-style test
   configurations from perl inputs

Reviewed-by: Richard Levitte <levitte@openssl.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/test/handshake_helper.h b/test/handshake_helper.h
new file mode 100644
index 0000000000..56dfb197e2
--- /dev/null
+++ b/test/handshake_helper.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
+ */
+
+#ifndef HEADER_HANDSHAKE_HELPER_H
+#define HEADER_HANDSHAKE_HELPER_H
+
+#include "ssl_test_ctx.h"
+
+typedef struct handshake_result {
+    ssl_test_result_t result;
+    /* These alerts are in the 2-byte format returned by the info_callback. */
+    /* Alert sent by the client; 0 if no alert. */
+    int client_alert_sent;
+    /* Alert received by the server; 0 if no alert. */
+    int client_alert_received;
+    /* Alert sent by the server; 0 if no alert. */
+    int server_alert_sent;
+    /* Alert received by the client; 0 if no alert. */
+    int server_alert_received;
+    /* Negotiated protocol. On success, these should always match. */
+    int server_protocol;
+    int client_protocol;
+} HANDSHAKE_RESULT;
+
+/* Do a handshake and report some information about the result. */
+HANDSHAKE_RESULT do_handshake(SSL_CTX *server_ctx, SSL_CTX *client_ctx);
+
+#endif  /* HEADER_HANDSHAKE_HELPER_H */