ipc_address.cpp 2.35 KB
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/*
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    Copyright (c) 2007-2014 Contributors as noted in the AUTHORS file
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    This file is part of 0MQ.

    0MQ is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    0MQ is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "ipc_address.hpp"

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#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
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#include "err.hpp"

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#include <string>
#include <sstream>
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zmq::ipc_address_t::ipc_address_t ()
{
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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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    zmq_assert (sa && sa_len > 0);
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    memset (&address, 0, sizeof address);
    if (sa->sa_family == AF_UNIX)
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        memcpy(&address, sa, sa_len);
}

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zmq::ipc_address_t::~ipc_address_t ()
{
}

int zmq::ipc_address_t::resolve (const char *path_)
{
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    if (strlen (path_) >= sizeof address.sun_path) {
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        errno = ENAMETOOLONG;
        return -1;
    }
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    if (path_ [0] == '@' && !path_ [1]) {
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        errno = EINVAL;
        return -1;
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    }
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    address.sun_family = AF_UNIX;
    strcpy (address.sun_path, path_);
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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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    return 0;
}

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int zmq::ipc_address_t::to_string (std::string &addr_)
{
    if (address.sun_family != AF_UNIX) {
        addr_.clear ();
        return -1;
    }

    std::stringstream s;
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    s << "ipc://";
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    if (!address.sun_path [0] && address.sun_path [1])
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       s << "@" << address.sun_path + 1;
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    else
       s << address.sun_path;
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    addr_ = s.str ();
    return 0;
}

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const sockaddr *zmq::ipc_address_t::addr () const
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{
    return (sockaddr*) &address;
}

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socklen_t zmq::ipc_address_t::addrlen () const
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{
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    if (!address.sun_path [0] && address.sun_path [1])
        return (socklen_t) strlen (address.sun_path + 1) + sizeof (sa_family_t) + 1;
    return (socklen_t) sizeof address;
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}

#endif