/* * Copyright (c) 2000-2001,2003-2004 Apple Computer, Inc. All Rights Reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ // // fdmover - send/receive file descriptors over a UNIX domain socket connection // // An FdMover object is a very specialized Socket: // It must be bound to a UNIX domain address // #ifndef _H_FDMOVER #define _H_FDMOVER #include "ip++.h" #include <vector> using namespace UnixPlusPlus; namespace Security { namespace IPPlusPlus { // an ordered list of file descriptors typedef std::vector<FileDesc> FdVector; // // An FdMover - a specialized Socket for transferring file descriptors // across UNIX domain sockets. // class FdMover : public Socket { private: class Element : public cmsghdr { public: void *operator new (size_t base, size_t more); void operator delete (void *addr, size_t size); Element() { } Element(int level, int type); template <class T> T &payload() { return *reinterpret_cast<T *>(CMSG_DATA(this)); } size_t payloadSize() const { return cmsg_len - ((caddr_t)CMSG_DATA(this) - (caddr_t)this); } }; class Message : public msghdr { public: Message(const void *data, size_t length); void set(Element *elem); Element *element() const { return (Element *)msg_control; } Element *next(Element *elem) const { return (Element *)CMSG_NXTHDR(this, elem); } public: IOVec iovec; }; public: FdMover() { } FdMover(Socket s) : Socket(s) { } size_t send(const void *data, size_t length, const FdVector &fds); size_t receive(void *data, size_t length, FdVector &fds); private: }; } // end namespace IPPlusPlus } // end namespace Security #endif //_H_FDMOVER