Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

features/unsupported/net/lwip/Socket/Endpoint.cpp@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

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elessair 0:f269e3021894 1 /* Copyright (C) 2012 mbed.org, MIT License
elessair 0:f269e3021894 2 *
elessair 0:f269e3021894 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
elessair 0:f269e3021894 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
elessair 0:f269e3021894 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
elessair 0:f269e3021894 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
elessair 0:f269e3021894 7 * furnished to do so, subject to the following conditions:
elessair 0:f269e3021894 8 *
elessair 0:f269e3021894 9 * The above copyright notice and this permission notice shall be included in all copies or
elessair 0:f269e3021894 10 * substantial portions of the Software.
elessair 0:f269e3021894 11 *
elessair 0:f269e3021894 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
elessair 0:f269e3021894 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
elessair 0:f269e3021894 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
elessair 0:f269e3021894 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
elessair 0:f269e3021894 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
elessair 0:f269e3021894 17 */
elessair 0:f269e3021894 18 #include "Socket/Socket.h"
elessair 0:f269e3021894 19 #include "Socket/Endpoint.h"
elessair 0:f269e3021894 20 #include <cstring>
elessair 0:f269e3021894 21 #include <cstdio>
elessair 0:f269e3021894 22
elessair 0:f269e3021894 23 Endpoint::Endpoint() {
elessair 0:f269e3021894 24 reset_address();
elessair 0:f269e3021894 25 }
elessair 0:f269e3021894 26 Endpoint::~Endpoint() {}
elessair 0:f269e3021894 27
elessair 0:f269e3021894 28 void Endpoint::reset_address(void) {
elessair 0:f269e3021894 29 std::memset(&_remoteHost, 0, sizeof(struct sockaddr_in));
elessair 0:f269e3021894 30 _ipAddress[0] = '\0';
elessair 0:f269e3021894 31 }
elessair 0:f269e3021894 32
elessair 0:f269e3021894 33 #include "stdio.h"
elessair 0:f269e3021894 34
elessair 0:f269e3021894 35 int Endpoint::set_address(const char* host, const int port) {
elessair 0:f269e3021894 36 reset_address();
elessair 0:f269e3021894 37
elessair 0:f269e3021894 38 // IP Address
elessair 0:f269e3021894 39 char address[5];
elessair 0:f269e3021894 40 char *p_address = address;
elessair 0:f269e3021894 41
elessair 0:f269e3021894 42 // Dot-decimal notation
elessair 0:f269e3021894 43 int result = std::sscanf(host, "%3u.%3u.%3u.%3u",
elessair 0:f269e3021894 44 (unsigned int*)&address[0], (unsigned int*)&address[1],
elessair 0:f269e3021894 45 (unsigned int*)&address[2], (unsigned int*)&address[3]);
elessair 0:f269e3021894 46
elessair 0:f269e3021894 47 if (result != 4) {
elessair 0:f269e3021894 48 // Resolve address with DNS
elessair 0:f269e3021894 49 struct hostent *host_address = lwip_gethostbyname(host);
elessair 0:f269e3021894 50 if (host_address == NULL)
elessair 0:f269e3021894 51 return -1; //Could not resolve address
elessair 0:f269e3021894 52 p_address = (char*)host_address->h_addr_list[0];
elessair 0:f269e3021894 53 }
elessair 0:f269e3021894 54 std::memcpy((char*)&_remoteHost.sin_addr.s_addr, p_address, 4);
elessair 0:f269e3021894 55
elessair 0:f269e3021894 56 // Address family
elessair 0:f269e3021894 57 _remoteHost.sin_family = AF_INET;
elessair 0:f269e3021894 58
elessair 0:f269e3021894 59 // Set port
elessair 0:f269e3021894 60 _remoteHost.sin_port = htons(port);
elessair 0:f269e3021894 61
elessair 0:f269e3021894 62 return 0;
elessair 0:f269e3021894 63 }
elessair 0:f269e3021894 64
elessair 0:f269e3021894 65 char* Endpoint::get_address() {
elessair 0:f269e3021894 66 if ((_ipAddress[0] == '\0') && (_remoteHost.sin_addr.s_addr != 0))
elessair 0:f269e3021894 67 inet_ntoa_r(_remoteHost.sin_addr, _ipAddress, sizeof(_ipAddress));
elessair 0:f269e3021894 68 return _ipAddress;
elessair 0:f269e3021894 69 }
elessair 0:f269e3021894 70
elessair 0:f269e3021894 71 int Endpoint::get_port() {
elessair 0:f269e3021894 72 return ntohs(_remoteHost.sin_port);
elessair 0:f269e3021894 73 }