projects / apple / security.git / blame
| Commit | Line | Data |
|---|---|---|
| b1ab9ed8 | 1 | /* |
| d8f41ccd | 2 | * Copyright (c) 2000-2001,2003-2004,2011,2014 Apple Inc. All Rights Reserved. |
| b1ab9ed8 A |
3 | * |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 12 | * | |
| 13 | * The Original Code and all software distributed under the License are | |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| 20 | * | |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | ||
| 24 | ||
| 25 | // | |
| 26 | // fdmover - send/receive file descriptors over a UNIX domain socket connection | |
| 27 | // | |
| 28 | // An FdMover object is a very specialized Socket: | |
| 29 | // It must be bound to a UNIX domain address | |
| 30 | // | |
| 31 | #ifndef _H_FDMOVER | |
| 32 | #define _H_FDMOVER | |
| 33 | ||
| 34 | #include "ip++.h" | |
| 35 | #include <vector> | |
| 36 | ||
| 37 | using namespace UnixPlusPlus; | |
| 38 | ||
| 39 | ||
| 40 | namespace Security { | |
| 41 | namespace IPPlusPlus { | |
| 42 | ||
| 43 | ||
| 44 | // an ordered list of file descriptors | |
| 45 | typedef std::vector<FileDesc> FdVector; | |
| 46 | ||
| 47 | ||
| 48 | // | |
| 49 | // An FdMover - a specialized Socket for transferring file descriptors | |
| 50 | // across UNIX domain sockets. | |
| 51 | // | |
| 52 | class FdMover : public Socket { | |
| 53 | private: | |
| 54 | class Element : public cmsghdr { | |
| 55 | public: | |
| 56 | void *operator new (size_t base, size_t more); | |
| 57 | void operator delete (void *addr, size_t size); | |
| 58 | ||
| 59 | Element() { } | |
| 60 | Element(int level, int type); | |
| 61 | ||
| 62 | template <class T> T &payload() { return *reinterpret_cast<T *>(CMSG_DATA(this)); } | |
| 63 | size_t payloadSize() const { return cmsg_len - ((caddr_t)CMSG_DATA(this) - (caddr_t)this); } | |
| 64 | }; | |
| 65 | ||
| 66 | class Message : public msghdr { | |
| 67 | public: | |
| 68 | Message(const void *data, size_t length); | |
| 69 | void set(Element *elem); | |
| 70 | Element *element() const { return (Element *)msg_control; } | |
| 71 | Element *next(Element *elem) const { return (Element *)CMSG_NXTHDR(this, elem); } | |
| 72 | ||
| 73 | public: | |
| 74 | IOVec iovec; | |
| 75 | }; | |
| 76 | ||
| 77 | public: | |
| 78 | FdMover() { } | |
| 79 | FdMover(Socket s) : Socket(s) { } | |
| 80 | ||
| 81 | size_t send(const void *data, size_t length, const FdVector &fds); | |
| 82 | size_t receive(void *data, size_t length, FdVector &fds); | |
| 83 | ||
| 84 | private: | |
| 85 | ||
| 86 | }; | |
| 87 | ||
| 88 | ||
| 89 | } // end namespace IPPlusPlus | |
| 90 | } // end namespace Security | |
| 91 | ||
| 92 | ||
| 93 | #endif //_H_FDMOVER |