1 /* 2 Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file 3 4 This file is part of libzmq, the ZeroMQ core engine in C++. 5 6 libzmq is free software; you can redistribute it and/or modify it under 7 the terms of the GNU Lesser General Public License (LGPL) as published 8 by the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 As a special exception, the Contributors give you permission to link 12 this library with independent modules to produce an executable, 13 regardless of the license terms of these independent modules, and to 14 copy and distribute the resulting executable under terms of your choice, 15 provided that you also meet, for each linked independent module, the 16 terms and conditions of the license of that module. An independent 17 module is a module which is not derived from or based on this library. 18 If you modify this library, you must extend this exception to your 19 version of the library. 20 21 libzmq is distributed in the hope that it will be useful, but WITHOUT 22 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 23 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 24 License for more details. 25 26 You should have received a copy of the GNU Lesser General Public License 27 along with this program. If not, see <http://www.gnu.org/licenses/>. 28 */ 29 30 #ifndef __ZMQ_IPC_LISTENER_HPP_INCLUDED__ 31 #define __ZMQ_IPC_LISTENER_HPP_INCLUDED__ 32 33 #if defined ZMQ_HAVE_IPC 34 35 #include <string> 36 37 #include "fd.hpp" 38 #include "stream_listener_base.hpp" 39 40 namespace zmq 41 { 42 class ipc_listener_t ZMQ_FINAL : public stream_listener_base_t 43 { 44 public: 45 ipc_listener_t (zmq::io_thread_t *io_thread_, 46 zmq::socket_base_t *socket_, 47 const options_t &options_); 48 49 // Set address to listen on. 50 int set_local_address (const char *addr_); 51 52 protected: 53 std::string get_socket_name (fd_t fd_, socket_end_t socket_end_) const; 54 55 private: 56 // Handlers for I/O events. 57 void in_event (); 58 59 // Filter new connections if the OS provides a mechanism to get 60 // the credentials of the peer process. Called from accept(). 61 #if defined ZMQ_HAVE_SO_PEERCRED || defined ZMQ_HAVE_LOCAL_PEERCRED 62 bool filter (fd_t sock_); 63 #endif 64 65 int close (); 66 67 // Accept the new connection. Returns the file descriptor of the 68 // newly created connection. The function may return retired_fd 69 // if the connection was dropped while waiting in the listen backlog. 70 fd_t accept (); 71 72 // True, if the underlying file for UNIX domain socket exists. 73 bool _has_file; 74 75 // Name of the temporary directory (if any) that has the 76 // UNIX domain socket 77 std::string _tmp_socket_dirname; 78 79 // Name of the file associated with the UNIX domain address. 80 std::string _filename; 81 82 ZMQ_NON_COPYABLE_NOR_MOVABLE (ipc_listener_t) 83 }; 84 } 85 86 #endif 87 88 #endif 89