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// Copyright (c) 2018-2018 Josh Blum
// SPDX-License-Identifier: BSL-1.0
//----------------------------------------------------------
//-- https://docs.microsoft.com/en-us/windows/desktop/api/iphlpapi/nf-iphlpapi-getadaptersaddresses
//----------------------------------------------------------
#include "SoapyIfAddrs.hpp"
#include "SoapySocketDefs.hpp"
#include "SoapyURLUtils.hpp"
#include <ciso646>
#include <iostream>
#include <vector>
#include <map>
#include <winsock2.h>
#include <iphlpapi.h>
#include <stdio.h>
#include <stdlib.h>
// Link with Iphlpapi.lib
#pragma comment(lib, "IPHLPAPI.lib")
#define WORKING_BUFFER_SIZE 15000
#define MAX_TRIES 3
#define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
#define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
std::vector<SoapyIfAddr> listSoapyIfAddrs(void)
{
std::vector<SoapyIfAddr> result;
//nothing but simplicity https://msdn.microsoft.com/en-us/library/aa365915.aspx
DWORD dwSize = 0;
DWORD dwRetVal = 0;
unsigned int i = 0;
// Set the flags to pass to GetAdaptersAddresses
ULONG flags = GAA_FLAG_INCLUDE_PREFIX;
// default to unspecified address family (both)
ULONG family = AF_UNSPEC;
LPVOID lpMsgBuf = NULL;
PIP_ADAPTER_ADDRESSES pAddresses = NULL;
ULONG outBufLen = 0;
ULONG Iterations = 0;
PIP_ADAPTER_ADDRESSES pCurrAddresses = NULL;
// Allocate a 15 KB buffer to start with.
outBufLen = WORKING_BUFFER_SIZE;
do {
pAddresses = (IP_ADAPTER_ADDRESSES *) MALLOC(outBufLen);
if (pAddresses == NULL) {
printf
("Memory allocation failed for IP_ADAPTER_ADDRESSES struct\n");
return result;
}
dwRetVal =
GetAdaptersAddresses(family, flags, NULL, pAddresses, &outBufLen);
if (dwRetVal == ERROR_BUFFER_OVERFLOW) {
FREE(pAddresses);
pAddresses = NULL;
} else {
break;
}
Iterations++;
} while ((dwRetVal == ERROR_BUFFER_OVERFLOW) && (Iterations < MAX_TRIES));
if (dwRetVal == NO_ERROR) {
// If successful, output some information from the data we received
pCurrAddresses = pAddresses;
while (pCurrAddresses) {
SoapyIfAddr ifAddr;
ifAddr.isUp = pCurrAddresses->OperStatus == IfOperStatusUp;
ifAddr.isLoopback = pCurrAddresses->IfType == IF_TYPE_SOFTWARE_LOOPBACK;
ifAddr.isMulticast = pCurrAddresses->NoMulticast == 0;
ifAddr.ethno = pCurrAddresses->Ipv6IfIndex;
ifAddr.name = pCurrAddresses->AdapterName;
for (auto addr_i = pCurrAddresses->FirstUnicastAddress; addr_i != NULL; addr_i = addr_i->Next)
{
const auto a = addr_i->Address.lpSockaddr;
switch(a->sa_family)
{
case AF_INET: ifAddr.ipVer = 4; break;
case AF_INET6: ifAddr.ipVer = 6; break;
default: break;
}
if (ifAddr.ipVer == 0) continue;
ifAddr.addr = SoapyURL(a).getNode();
result.push_back(ifAddr);
}
pCurrAddresses = pCurrAddresses->Next;
}
} else {
printf("Call to GetAdaptersAddresses failed with error: %d\n",
dwRetVal);
if (dwRetVal == ERROR_NO_DATA)
printf("\tNo addresses were found for the requested parameters\n");
else {
if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, dwRetVal, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
// Default language
(LPTSTR) & lpMsgBuf, 0, NULL)) {
printf("\tError: %s", (const char *)lpMsgBuf);
LocalFree(lpMsgBuf);
if (pAddresses)
FREE(pAddresses);
return result;
}
}
}
if (pAddresses) {
FREE(pAddresses);
}
return result;
}
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