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 "api/types/Socket/Socket.h"
00019 #include "api/types/Socket/Endpoint.h"
00020 #include <cstring>
00021 #include <cstdio>
00022 
00023 
00024 
00025 /*************************************************************************************************/
00026 Endpoint::Endpoint()
00027 {
00028     reset_address();
00029 }
00030 
00031 /*************************************************************************************************/
00032 Endpoint::~Endpoint() {}
00033 
00034 /*************************************************************************************************/
00035 void Endpoint::reset_address(void)
00036 {
00037     std::memset(&_remoteHost, 0, sizeof(struct sockaddr_in));
00038     _ipAddress[0] = '\0';
00039 }
00040 
00041 /*************************************************************************************************/
00042 int Endpoint::set_address(const char* host, const int port)
00043 {
00044     reset_address();
00045 
00046     // IP Address
00047     char address[5];
00048     char *p_address = address;
00049 
00050     // Dot-decimal notation
00051     int result = std::sscanf(host, "%3u.%3u.%3u.%3u",
00052         (unsigned int*)&address[0], (unsigned int*)&address[1],
00053         (unsigned int*)&address[2], (unsigned int*)&address[3]);
00054 
00055     if (result != 4)
00056     {
00057         // Resolve address with DNS
00058         struct hostent *host_address = gethostbyname(host);
00059         if (host_address == NULL)
00060             return -1; //Could not resolve address
00061         p_address = (char*)host_address->h_addr_list[0];
00062     }
00063     std::memcpy((char*)&_remoteHost.sin_addr.s_addr, p_address, 4);
00064 
00065     // Address family
00066     _remoteHost.sin_family = AF_INET;
00067 
00068     // Set port
00069     _remoteHost.sin_port = htons(port);
00070 
00071     return 0;
00072 }
00073 
00074 /*************************************************************************************************/
00075 char* Endpoint::get_address()
00076 {
00077     if ((_ipAddress[0] == '\0') && (_remoteHost.sin_addr.s_addr != 0))
00078             inet_ntoa_r(_remoteHost.sin_addr, _ipAddress, sizeof(_ipAddress));
00079     return _ipAddress;
00080 }
00081 
00082 /*************************************************************************************************/
00083 int   Endpoint::get_port()
00084 {
00085     return ntohs(_remoteHost.sin_port);
00086 }