Add ChildPortServer, a MachMessageServer::Interface implementation for the child_port subsystem

util/mach/mach_message_util_test.cc

+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// 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 "util/mach/mach_message_util.h"
+
+#include "base/basictypes.h"
+#include "gtest/gtest.h"
+#include "util/mach/mach_extensions.h"
+
+namespace crashpad {
+namespace test {
+namespace {
+
+TEST(MachMessageUtil, PrepareMIGReplyFromRequest_SetMIGReplyError) {
+  mach_msg_header_t request;
+  request.msgh_bits =
+      MACH_MSGH_BITS_COMPLEX |
+      MACH_MSGH_BITS(MACH_MSG_TYPE_PORT_SEND_ONCE, MACH_MSG_TYPE_PORT_SEND);
+  request.msgh_size = 64;
+  request.msgh_remote_port = 0x01234567;
+  request.msgh_local_port = 0x89abcdef;
+  request.msgh_reserved = 0xa5a5a5a5;
+  request.msgh_id = 1011;
+
+  mig_reply_error_t reply;
+
+  // PrepareMIGReplyFromRequest() doesn’t touch this field.
+  reply.RetCode = MIG_TYPE_ERROR;
+
+  PrepareMIGReplyFromRequest(&request, &reply.Head);
+
+  EXPECT_EQ(implicit_cast<mach_msg_bits_t>(
+                MACH_MSGH_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE, 0)),
+            reply.Head.msgh_bits);
+  EXPECT_EQ(sizeof(reply), reply.Head.msgh_size);
+  EXPECT_EQ(request.msgh_remote_port, reply.Head.msgh_remote_port);
+  EXPECT_EQ(kMachPortNull, reply.Head.msgh_local_port);
+  EXPECT_EQ(0u, reply.Head.msgh_reserved);
+  EXPECT_EQ(1111, reply.Head.msgh_id);
+  EXPECT_EQ(NDR_record.mig_vers, reply.NDR.mig_vers);
+  EXPECT_EQ(NDR_record.if_vers, reply.NDR.if_vers);
+  EXPECT_EQ(NDR_record.reserved1, reply.NDR.reserved1);
+  EXPECT_EQ(NDR_record.mig_encoding, reply.NDR.mig_encoding);
+  EXPECT_EQ(NDR_record.int_rep, reply.NDR.int_rep);
+  EXPECT_EQ(NDR_record.char_rep, reply.NDR.char_rep);
+  EXPECT_EQ(NDR_record.float_rep, reply.NDR.float_rep);
+  EXPECT_EQ(NDR_record.reserved2, reply.NDR.reserved2);
+  EXPECT_EQ(MIG_TYPE_ERROR, reply.RetCode);
+
+  SetMIGReplyError(&reply.Head, MIG_BAD_ID);
+
+  EXPECT_EQ(MIG_BAD_ID, reply.RetCode);
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace crashpad