unixserverstream.cpp

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#include <string>
/*
   The committers of the libsocket project, all rights reserved
   (c) 2012, dermesser <lbo@spheniscida.de>

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:

   1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
   2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

   THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS “AS IS” AND ANY
   EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#include <libunixsocket.h>
#include <exception.hpp>
#include <unixserverstream.hpp>

namespace libsocket {
using std::string;

unix_stream_server::unix_stream_server(void) {}

unix_stream_server::unix_stream_server(const char* path, int flags) {
    setup(path, flags);
}

unix_stream_server::unix_stream_server(const string& path, int flags) {
    setup(path, flags);
}

void unix_stream_server::setup(const char* path, int flags) {
    if (sfd != -1)
        throw socket_exception(
            __FILE__, __LINE__,
            "unix_stream_server::setup: Socket already set up!", false);
    if (path == NULL)
        throw socket_exception(__FILE__, __LINE__,
                               "unix_stream_server::setup: Path is NULL!",
                               false);

    sfd = create_unix_server_socket(path, LIBSOCKET_STREAM, flags);

    if (sfd < 0)
        throw socket_exception(__FILE__, __LINE__,
                               "unix_stream_server::setup: Error at creating "
                               "UNIX stream server socket!");

    _path.assign(path);
}

void unix_stream_server::setup(const string& path, int flags) {
    setup(path.c_str(), flags);
}

unix_stream_client* unix_stream_server::accept(int flags) {
    return accept2(flags).release();
}

unique_ptr<unix_stream_client> unix_stream_server::accept2(int flags) {
    int cfd;

    if (sfd == -1)
        throw socket_exception(
            __FILE__, __LINE__,
            "unix_stream_server::accept2: Socket not has not yet been set up!", false);

    unique_ptr<unix_stream_client> client(new unix_stream_client);

    cfd = accept_unix_stream_socket(sfd, flags);

    if (cfd < 0) {
        if (is_nonblocking && errno == EWOULDBLOCK)
            return unique_ptr<unix_stream_client>(nullptr);
        else
            throw socket_exception(__FILE__, __LINE__,
                                   "unix_stream_server::accept2: Error while "
                                   "accepting new connection!");
    }

    client->sfd = cfd;

    return client;
}
}  // namespace libsocket