text: // 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/child_port_server.h"
  
  #include <iterator>
  
  #include "util/mach/child_portServer.h"
  #include "util/mach/mach_message.h"
  
  namespace {
  
  // There is no predefined constant for this.
  enum MachMessageID : mach_msg_id_t {
    kMachMessageIDChildPortCheckIn = 10011,
  };
  
  // The MIG-generated __MIG_check__Request__*() functions are not declared as
  // accepting const data, but they could have been because they in fact do not
  // modify the data. This wrapper function is provided to bridge the const gap
  // between the code in this file, which is const-correct and treats request
  // message data as const, and the generated function.
  
  kern_return_t MIGCheckRequestChildPortCheckIn(
      const __Request__child_port_check_in_t* in_request) {
    using Request = __Request__child_port_check_in_t;
    return __MIG_check__Request__child_port_check_in_t(
        const_cast<Request*>(in_request));
  }
  
  }  // namespace
  
  namespace crashpad {
  
  ChildPortServer::ChildPortServer(ChildPortServer::Interface* interface)
      : MachMessageServer::Interface(),
        interface_(interface) {
  }
  
  bool ChildPortServer::MachMessageServerFunction(
      const mach_msg_header_t* in_header,
      mach_msg_header_t* out_header,
      bool* destroy_complex_request) {
    PrepareMIGReplyFromRequest(in_header, out_header);
  
    const mach_msg_trailer_t* in_trailer =
        MachMessageTrailerFromHeader(in_header);
  
    switch (in_header->msgh_id) {
      case kMachMessageIDChildPortCheckIn: {
        // child_port_check_in(), handle_child_port_check_in().
        using Request = __Request__child_port_check_in_t;
        const Request* in_request = reinterpret_cast<const Request*>(in_header);
        kern_return_t kr = MIGCheckRequestChildPortCheckIn(in_request);
        if (kr != MACH_MSG_SUCCESS) {
          SetMIGReplyError(out_header, kr);
          return true;
        }
  
        using Reply = __Reply__child_port_check_in_t;
        Reply* out_reply = reinterpret_cast<Reply*>(out_header);
        out_reply->RetCode =
            interface_->HandleChildPortCheckIn(in_header->msgh_local_port,
                                               in_request->token,
                                               in_request->port.name,
                                               in_request->port.disposition,
                                               in_trailer,
                                               destroy_complex_request);
        return true;
      }
  
      default: {
        SetMIGReplyError(out_header, MIG_BAD_ID);
        return false;
      }
    }
  }
  
  std::set<mach_msg_id_t> ChildPortServer::MachMessageServerRequestIDs() {
    static constexpr mach_msg_id_t request_ids[] =
        {kMachMessageIDChildPortCheckIn};
    return std::set<mach_msg_id_t>(&request_ids[0],
                                   &request_ids[std::size(request_ids)]);
  }
  
  mach_msg_size_t ChildPortServer::MachMessageServerRequestSize() {
    return sizeof(__RequestUnion__handle_child_port_subsystem);
  }
  
  mach_msg_size_t ChildPortServer::MachMessageServerReplySize() {
    return sizeof(__ReplyUnion__handle_child_port_subsystem);
  }
  
  }  // namespace crashpad
  