100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* WindowsInterfacePicker.cpp
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* Chooses an interface to listen on
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* Copyright (C) 2005-2010 Simon Newton
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*/
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typedef int socklen_t;
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#include <winsock2.h>
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#include <Lm.h>
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#include <iphlpapi.h>
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#include <unistd.h>
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#include <vector>
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#include "common/network/WindowsInterfacePicker.h"
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#include "ola/Logging.h"
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namespace ola {
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namespace network {
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using std::vector;
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/*
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* Return a vector of interfaces on the system.
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*/
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vector<Interface> WindowsInterfacePicker::GetInterfaces() const {
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vector<Interface> interfaces;
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PIP_ADAPTER_INFO pAdapter = NULL;
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PIP_ADAPTER_INFO pAdapterInfo;
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IP_ADDR_STRING *ipAddress;
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ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);
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unsigned long net, mask;
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while (1) {
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pAdapterInfo = reinterpret_cast<IP_ADAPTER_INFO*>(malloc(ulOutBufLen));
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if (!pAdapterInfo) {
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OLA_WARN << "Error allocating memory needed for GetAdaptersinfo";
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return interfaces;
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}
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// if ulOutBufLen isn't long enough it'll be set to the size of the buffer
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// required
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DWORD status = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen);
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if (status == NO_ERROR)
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break;
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free(pAdapterInfo);
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if (status != ERROR_BUFFER_OVERFLOW) {
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OLA_WARN << "GetAdaptersInfo failed with error: " <<
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static_cast<int>(status);
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return interfaces;
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}
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}
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for (pAdapter = pAdapterInfo;
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pAdapter && pAdapter < pAdapterInfo + ulOutBufLen;
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pAdapter = pAdapter->Next) {
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if (pAdapter->Type != MIB_IF_TYPE_ETHERNET)
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continue;
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for (ipAddress = &pAdapter->IpAddressList; ipAddress;
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ipAddress = ipAddress->Next) {
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net = inet_addr(ipAddress->IpAddress.String);
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// Windows doesn't seem to have the notion of an interface being 'up'
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// so we check if this interface has an address assigned.
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if (net) {
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Interface interface;
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interface.name = pAdapter->AdapterName; // IFNAME_SIZE
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memcpy(interface.hw_address, pAdapter->Address, MAC_LENGTH);
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struct sockaddr_in *sin = (struct sockaddr_in *) &iface->ifr_addr;
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interface.ip_address = sin->sin_addr;
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mask = inet_addr(ipAddress->IpMask.String);
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interface.bcast_addr = ((interface.ip_address & mask) |
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(0xFFFFFFFF ^ mask));
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interfaces.push_back(interface);
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}
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}
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}
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free(pAdapterInfo);
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return interfaces;
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}
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} // network
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} // ola
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