Endpoint.cpp

00001 /* Copyright (C) 2012 mbed.org, MIT License
00002  *
00003  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00004  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00005  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00006  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00007  * furnished to do so, subject to the following conditions:
00008  *
00009  * The above copyright notice and this permission notice shall be included in all copies or
00010  * substantial portions of the Software.
00011  *
00012  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00013  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00014  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00015  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00016  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017  */
00018 #include "Socket/Socket.h"
00019 #include "Socket/Endpoint.h"
00020 #include <cstring>
00021 
00022 using std::memset;
00023 
00024 Endpoint::Endpoint()  {
00025     reset_address();
00026 }
00027 Endpoint::~Endpoint() {}
00028 
00029 void Endpoint::reset_address(void) {
00030     memset(&_remoteHost, 0, sizeof(struct sockaddr_in));
00031     _ipAddress[0] = '\0';
00032 }
00033 
00034 int Endpoint::set_address(const char* host, const int port) {
00035     //Resolve DNS address or populate hard-coded IP address
00036     struct hostent *server = ::gethostbyname(host);
00037     if (server == NULL)
00038         return -1; //Could not resolve address
00039     
00040     reset_address();
00041     
00042     // Set IP address
00043     std::memcpy((char*) &_remoteHost.sin_addr.s_addr,
00044                 (char*) server->h_addr_list[0], server->h_length);
00045     _remoteHost.sin_family = AF_INET;
00046     
00047     // Set port
00048     _remoteHost.sin_port = htons(port);
00049     
00050     return 0;
00051 }
00052 
00053 char* Endpoint::get_address() {
00054     if ((_ipAddress[0] == '\0') && (_remoteHost.sin_addr.s_addr != 0))
00055             inet_ntoa_r(_remoteHost.sin_addr, _ipAddress, sizeof(_ipAddress));
00056     return _ipAddress;
00057 }
00058 
00059 int   Endpoint::get_port() {
00060     return ntohs(_remoteHost.sin_port);
00061 }