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a4dbdb614e
Solution: move compat redefinition to compat.hpp header so that it can be used from msg.cpp
121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.hpp"
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#include "compat.hpp"
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#include "ipc_address.hpp"
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#if defined ZMQ_HAVE_IPC
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#include "err.hpp"
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#include <string>
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zmq::ipc_address_t::ipc_address_t ()
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{
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memset (&_address, 0, sizeof _address);
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}
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zmq::ipc_address_t::ipc_address_t (const sockaddr *sa_, socklen_t sa_len_) :
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_addrlen (sa_len_)
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{
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zmq_assert (sa_ && sa_len_ > 0);
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memset (&_address, 0, sizeof _address);
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if (sa_->sa_family == AF_UNIX)
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memcpy (&_address, sa_, sa_len_);
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}
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zmq::ipc_address_t::~ipc_address_t ()
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{
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}
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int zmq::ipc_address_t::resolve (const char *path_)
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{
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const size_t path_len = strlen (path_);
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if (path_len >= sizeof _address.sun_path) {
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errno = ENAMETOOLONG;
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return -1;
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}
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if (path_[0] == '@' && !path_[1]) {
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errno = EINVAL;
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return -1;
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}
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_address.sun_family = AF_UNIX;
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memcpy (_address.sun_path, path_, path_len + 1);
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/* Abstract sockets start with '\0' */
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if (path_[0] == '@')
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*_address.sun_path = '\0';
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_addrlen =
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static_cast<socklen_t> (offsetof (sockaddr_un, sun_path) + path_len);
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return 0;
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}
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int zmq::ipc_address_t::to_string (std::string &addr_) const
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{
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if (_address.sun_family != AF_UNIX) {
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addr_.clear ();
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return -1;
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}
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const char prefix[] = "ipc://";
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char buf[sizeof prefix + sizeof _address.sun_path];
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char *pos = buf;
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memcpy (pos, prefix, sizeof prefix - 1);
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pos += sizeof prefix - 1;
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const char *src_pos = _address.sun_path;
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if (!_address.sun_path[0] && _address.sun_path[1]) {
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*pos++ = '@';
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src_pos++;
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}
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// according to http://man7.org/linux/man-pages/man7/unix.7.html, NOTES
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// section, address.sun_path might not always be null-terminated; therefore,
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// we calculate the length based of addrlen
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const size_t src_len =
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strnlen (src_pos, _addrlen - offsetof (sockaddr_un, sun_path)
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- (src_pos - _address.sun_path));
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memcpy (pos, src_pos, src_len);
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addr_.assign (buf, pos - buf + src_len);
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return 0;
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}
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const sockaddr *zmq::ipc_address_t::addr () const
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{
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return reinterpret_cast<const sockaddr *> (&_address);
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}
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socklen_t zmq::ipc_address_t::addrlen () const
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{
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return _addrlen;
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}
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#endif
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