Add options to check certificate types.

Reviewed-by: NEmilia Käsper <emilia@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2224)

test/README.ssltest.md

@@ -89,6 +89,9 @@ handshake.
 
 * ExpectedTmpKeyType - the expected algorithm or curve of server temp key
 
+* ExpectedServerKeyType, ExpectedClientKeyType - the expected algorithm or
+  curve of server or client certificate
+
 ## Configuring the client and server
 
 The client and server configurations can be any valid `SSL_CTX`

test/handshake_helper.c

@@ -847,6 +847,32 @@ static char *dup_str(const unsigned char *in, size_t len)
     return ret;
 }
 
+static int pkey_type(EVP_PKEY *pkey)
+{
+    int nid = EVP_PKEY_id(pkey);
+
+#ifndef OPENSSL_NO_EC
+    if (nid == EVP_PKEY_EC) {
+        const EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
+        return EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
+    }
+#endif
+    return nid;
+}
+
+static int peer_pkey_type(SSL *s)
+{
+    X509 *x = SSL_get_peer_certificate(s);
+
+    if (x != NULL) {
+        int nid = pkey_type(X509_get0_pubkey(x));
+
+        X509_free(x);
+        return nid;
+    }
+    return NID_undef;
+}
+
 /*
  * Note that |extra| points to the correct client/server configuration
  * within |test_ctx|. When configuring the handshake, general mode settings
@@ -1040,18 +1066,13 @@ static HANDSHAKE_RESULT *do_handshake_internal(
         *session_out = SSL_get1_session(client.ssl);
 
     if (SSL_get_server_tmp_key(client.ssl, &tmp_key)) {
-        int nid = EVP_PKEY_id(tmp_key);
-
-#ifndef OPENSSL_NO_EC
-        if (nid == EVP_PKEY_EC) {
-            EC_KEY *ec = EVP_PKEY_get0_EC_KEY(tmp_key);
-            nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
-        }
-#endif
+        ret->tmp_key_type = pkey_type(tmp_key);
         EVP_PKEY_free(tmp_key);
-        ret->tmp_key_type = nid;
     }
 
+    ret->server_cert_type = peer_pkey_type(client.ssl);
+    ret->client_cert_type = peer_pkey_type(server.ssl);
+
     ctx_data_free_data(&server_ctx_data);
     ctx_data_free_data(&server2_ctx_data);
     ctx_data_free_data(&client_ctx_data);

test/handshake_helper.h

@@ -45,6 +45,10 @@ typedef struct handshake_result {
     int server_resumed;
     /* Temporary key type */
     int tmp_key_type;
+    /* server certificate key type */
+    int server_cert_type;
+    /* client certificate key type */
+    int client_cert_type;
 } HANDSHAKE_RESULT;
 
 HANDSHAKE_RESULT *HANDSHAKE_RESULT_new(void);

test/ssl_test.c

@@ -187,17 +187,38 @@ static int check_resumption(HANDSHAKE_RESULT *result, SSL_TEST_CTX *test_ctx)
     return 1;
 }
 
-static int check_tmp_key(HANDSHAKE_RESULT *result, SSL_TEST_CTX *test_ctx)
+static int check_key_type(const char *name,int expected_key_type, int key_type)
 {
-    if (test_ctx->expected_tmp_key_type == 0
-        || test_ctx->expected_tmp_key_type == result->tmp_key_type)
+    if (expected_key_type == 0 || expected_key_type == key_type)
         return 1;
-    fprintf(stderr, "Tmp key type mismatch, %s vs %s\n",
-            OBJ_nid2ln(test_ctx->expected_tmp_key_type),
-            OBJ_nid2ln(result->tmp_key_type));
+    fprintf(stderr, "%s type mismatch, %s vs %s\n",
+            name, OBJ_nid2ln(expected_key_type),
+            key_type == NID_undef ? "absent" : OBJ_nid2ln(key_type));
     return 0;
 }
 
+static int check_tmp_key(HANDSHAKE_RESULT *result, SSL_TEST_CTX *test_ctx)
+{
+    return check_key_type("Tmp key", test_ctx->expected_tmp_key_type,
+                          result->tmp_key_type);
+}
+
+static int check_server_cert_type(HANDSHAKE_RESULT *result,
+                                  SSL_TEST_CTX *test_ctx)
+{
+    return check_key_type("Server certificate",
+                          test_ctx->expected_server_cert_type,
+                          result->server_cert_type);
+}
+
+static int check_client_cert_type(HANDSHAKE_RESULT *result,
+                                  SSL_TEST_CTX *test_ctx)
+{
+    return check_key_type("Client certificate",
+                          test_ctx->expected_client_cert_type,
+                          result->client_cert_type);
+}
+
 /*
  * This could be further simplified by constructing an expected
  * HANDSHAKE_RESULT, and implementing comparison methods for
@@ -219,6 +240,8 @@ static int check_test(HANDSHAKE_RESULT *result, SSL_TEST_CTX *test_ctx)
         ret &= check_alpn(result, test_ctx);
         ret &= check_resumption(result, test_ctx);
         ret &= check_tmp_key(result, test_ctx);
+        ret &= check_server_cert_type(result, test_ctx);
+        ret &= check_client_cert_type(result, test_ctx);
     }
     return ret;
 }

test/ssl_test_ctx.c

@@ -433,17 +433,21 @@ IMPLEMENT_SSL_TEST_INT_OPTION(SSL_TEST_CTX, test, app_data_size)
 IMPLEMENT_SSL_TEST_INT_OPTION(SSL_TEST_CTX, test, max_fragment_size)
 
 /***********************/
-/* ExpectedTmpKeyType  */
+/* Expected key types  */
 /***********************/
 
-__owur static int parse_expected_tmp_key_type(SSL_TEST_CTX *test_ctx,
-                                              const char *value)
+__owur static int parse_expected_key_type(int *ptype, const char *value)
 {
     int nid;
+    const EVP_PKEY_ASN1_METHOD *ameth;
 
     if (value == NULL)
         return 0;
-    nid = OBJ_sn2nid(value);
+    ameth = EVP_PKEY_asn1_find_str(NULL, value, -1);
+    if (ameth != NULL)
+        EVP_PKEY_asn1_get0_info(&nid, NULL, NULL, NULL, NULL, ameth);
+    else
+        nid = OBJ_sn2nid(value);
     if (nid == NID_undef)
         nid = OBJ_ln2nid(value);
 #ifndef OPENSSL_NO_EC
@@ -452,10 +456,30 @@ __owur static int parse_expected_tmp_key_type(SSL_TEST_CTX *test_ctx,
 #endif
     if (nid == NID_undef)
         return 0;
-    test_ctx->expected_tmp_key_type = nid;
+    *ptype = nid;
     return 1;
 }
 
+__owur static int parse_expected_tmp_key_type(SSL_TEST_CTX *test_ctx,
+                                              const char *value)
+{
+    return parse_expected_key_type(&test_ctx->expected_tmp_key_type, value);
+}
+
+__owur static int parse_expected_server_cert_type(SSL_TEST_CTX *test_ctx,
+                                                  const char *value)
+{
+    return parse_expected_key_type(&test_ctx->expected_server_cert_type,
+                                   value);
+}
+
+__owur static int parse_expected_client_cert_type(SSL_TEST_CTX *test_ctx,
+                                                  const char *value)
+{
+    return parse_expected_key_type(&test_ctx->expected_client_cert_type,
+                                   value);
+}
+
 /*************************************************************/
 /* Known test options and their corresponding parse methods. */
 /*************************************************************/
@@ -481,6 +505,8 @@ static const ssl_test_ctx_option ssl_test_ctx_options[] = {
     { "ApplicationData", &parse_test_app_data_size },
     { "MaxFragmentSize", &parse_test_max_fragment_size },
     { "ExpectedTmpKeyType", &parse_expected_tmp_key_type },
+    { "ExpectedServerCertType", &parse_expected_server_cert_type },
+    { "ExpectedClientCertType", &parse_expected_client_cert_type },
 };
 
 /* Nested client options. */

test/ssl_test_ctx.h

@@ -161,6 +161,10 @@ typedef struct {
     int resumption_expected;
     /* Expected temporary key type */
     int expected_tmp_key_type;
+    /* Expected server certificate key type */
+    int expected_server_cert_type;
+    /* Expected client certificate key type */
+    int expected_client_cert_type;
 } SSL_TEST_CTX;
 
 const char *ssl_test_result_name(ssl_test_result_t result);