1 files changed, 103 insertions, 0 deletions
diff --git a/test/core/handshake/readahead_handshaker_server_ssl.cc b/test/core/handshake/readahead_handshaker_server_ssl.cc
new file mode 100644
index 0000000000..2810082837
--- /dev/null
+++ b/test/core/handshake/readahead_handshaker_server_ssl.cc
@@ -0,0 +1,103 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <arpa/inet.h>
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <grpc/grpc.h>
+#include <grpc/grpc_security.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/sync.h>
+#include <grpc/support/thd.h>
+#include "src/core/lib/iomgr/load_file.h"
+#include "test/core/util/port.h"
+#include "test/core/util/test_config.h"
+
+#include "src/core/lib/channel/handshaker_factory.h"
+#include "src/core/lib/channel/handshaker_registry.h"
+#include "src/core/lib/security/transport/security_handshaker.h"
+
+#include "test/core/handshake/server_ssl_common.h"
+
+/* The purpose of this test is to exercise the case when a
+ * grpc *security_handshaker* begins its handshake with data already
+ * in the read buffer of the handshaker arg. This scenario is created by
+ * adding a fake "readahead" handshaker at the beginning of the server's
+ * handshaker list, which just reads from the connection and then places
+ * read bytes into the read buffer of the handshake arg (to be passed down
+ * to the security_handshaker). This test is meant to protect code relying on
+ * this functionality that lives outside of this repo. */
+
+static void readahead_handshaker_destroy(grpc_exec_ctx* ctx,
+                                         grpc_handshaker* handshaker) {
+  gpr_free(handshaker);
+}
+
+static void readahead_handshaker_shutdown(grpc_exec_ctx* ctx,
+                                          grpc_handshaker* handshaker,
+                                          grpc_error* error) {}
+
+static void readahead_handshaker_do_handshake(
+    grpc_exec_ctx* ctx, grpc_handshaker* handshaker,
+    grpc_tcp_server_acceptor* acceptor, grpc_closure* on_handshake_done,
+    grpc_handshaker_args* args) {
+  grpc_endpoint_read(ctx, args->endpoint, args->read_buffer, on_handshake_done);
+}
+
+const grpc_handshaker_vtable readahead_handshaker_vtable = {
+    readahead_handshaker_destroy, readahead_handshaker_shutdown,
+    readahead_handshaker_do_handshake};
+
+static grpc_handshaker* readahead_handshaker_create(grpc_exec_ctx* ctx) {
+  grpc_handshaker* h = (grpc_handshaker*)gpr_zalloc(sizeof(grpc_handshaker));
+  grpc_handshaker_init(&readahead_handshaker_vtable, h);
+  return h;
+}
+
+static void readahead_handshaker_factory_add_handshakers(
+    grpc_exec_ctx* exec_ctx, grpc_handshaker_factory* hf,
+    const grpc_channel_args* args, grpc_handshake_manager* handshake_mgr) {
+  grpc_handshake_manager_add(handshake_mgr,
+                             readahead_handshaker_create(exec_ctx));
+}
+
+static void readahead_handshaker_factory_destroy(
+    grpc_exec_ctx* exec_ctx, grpc_handshaker_factory* handshaker_factory) {}
+
+static const grpc_handshaker_factory_vtable
+    readahead_handshaker_factory_vtable = {
+        readahead_handshaker_factory_add_handshakers,
+        readahead_handshaker_factory_destroy};
+
+int main(int argc, char* argv[]) {
+  grpc_handshaker_factory readahead_handshaker_factory = {
+      &readahead_handshaker_factory_vtable};
+  grpc_init();
+  grpc_handshaker_factory_register(true /* at_start */, HANDSHAKER_SERVER,
+                                   &readahead_handshaker_factory);
+  const char* full_alpn_list[] = {"grpc-exp", "h2"};
+  GPR_ASSERT(server_ssl_test(full_alpn_list, 2, "grpc-exp"));
+  grpc_shutdown();
+  return 0;
+}