inetclientdgram.cpp

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#include <cstring>
#include <iostream>
#include <string>
 
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
 
// oo wrapper around libinetsocket
/*
   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 <libinetsocket.h>
#include <exception.hpp>
#include <inetclientdgram.hpp>
 
#include <fcntl.h>
#ifndef SOCK_NONBLOCK
#define SOCK_NONBLOCK O_NONBLOCK
#endif
 
namespace libsocket {
using std::string;
 
// Constructors
 
inet_dgram_client::inet_dgram_client(int proto_osi3, int flags) {
    setup(proto_osi3, flags);
}
 
inet_dgram_client::inet_dgram_client(const char* dsthost, const char* dstport,
                                     int proto_osi3, int flags) {
    setup(dsthost, dstport, proto_osi3, flags);
}
 
inet_dgram_client::inet_dgram_client(const string& dsthost,
                                     const string& dstport, int proto_osi3,
                                     int flags) {
    setup(dsthost, dstport, proto_osi3, flags);
}
 
void inet_dgram_client::setup(int proto_osi3, int flags) {
    if (-1 == (sfd = create_inet_dgram_socket(proto_osi3, flags)))
        throw socket_exception(__FILE__, __LINE__,
                               "inet_dgram_client::inet_dgram_client() - Could "
                               "not create inet dgram socket!");
    proto = proto_osi3;
 
    is_nonblocking = flags & SOCK_NONBLOCK;
}
 
void inet_dgram_client::setup(const char* dsthost, const char* dstport,
                              int proto_osi3, int flags) {
    // Retrieve address family
    if (proto_osi3 == LIBSOCKET_BOTH) proto_osi3 = get_address_family(dsthost);
 
    if (-1 == (sfd = create_inet_dgram_socket(proto_osi3, flags)))
        throw socket_exception(__FILE__, __LINE__,
                               "inet_dgram_client::inet_dgram_client() - Could "
                               "not create inet dgram socket!");
 
    inet_dgram_client::connect(dsthost, dstport);
 
    proto = proto_osi3;
    is_nonblocking = flags & SOCK_NONBLOCK;
}
 
void inet_dgram_client::setup(const string& dsthost, const string& dstport,
                              int proto_osi3, int flags) {
    setup(dsthost.c_str(), dstport.c_str(), proto_osi3, flags);
}
 
void inet_dgram_client::connect(const char* dsthost, const char* dstport) {
    if (sfd == -1)
        throw socket_exception(
            __FILE__, __LINE__,
            "inet_dgram_client::connect() - Socket has already been closed!",
            false);
    if (-1 == (connect_inet_dgram_socket(sfd, dsthost, dstport)))
        throw socket_exception(
            __FILE__, __LINE__,
            "inet_dgram_client::connect() - Could not connect dgram socket! "
            "(Maybe this socket has a wrong address family?)");
 
    host = dsthost;
    port = dstport;
    connected = true;
}
 
void inet_dgram_client::connect(const string& dsthost, const string& dstport) {
    if (sfd == -1)
        throw socket_exception(
            __FILE__, __LINE__,
            "inet_dgram_client::connect() - Socket has already been closed!",
            false);
    if (-1 ==
        (connect_inet_dgram_socket(sfd, dsthost.c_str(), dstport.c_str())))
        throw socket_exception(
            __FILE__, __LINE__,
            "inet_dgram_client::connect() - Could not connect dgram socket! "
            "(Maybe this socket has a wrong address family?)");
 
    host = dsthost;
    port = dstport;
    connected = true;
}
 
/*
 * @brief Break association to host. Does not close the socket.
 *
 * *Should actually be called 'disconnect'*
 *
 */
void inet_dgram_client::deconnect(void) {
    if (-1 == (connect_inet_dgram_socket(sfd, NULL, NULL)))
        throw socket_exception(
            __FILE__, __LINE__,
            "inet_dgram_client::deconnect() - Could not disconnect!");
 
    connected = false;
    host.clear();
    port.clear();
}
}  // namespace libsocket