ObjFW  Diff

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/*
 * Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
 * Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
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    PIP_ADAPTER_ADDRESSES, PULONG);

static void
init(void)
{
	HMODULE module;

	if ((module = LoadLibrary("iphlpapi.dll")) != NULL)
	if ((module = GetModuleHandle("iphlpapi.dll")) != NULL)
		GetAdaptersAddressesFuncPtr = (WINAPI ULONG (*)(ULONG, ULONG,
		    PVOID, PIP_ADAPTER_ADDRESSES, PULONG))
		    GetProcAddress(module, "GetAdaptersAddresses");

}

static OFMutableDictionary OF_GENERIC(OFString *, OFNetworkInterface) *
networkInterfacesFromGetAdaptersAddresses(void)
{
	OFMutableDictionary *ret = [OFMutableDictionary dictionary];
	OFStringEncoding encoding = [OFLocale encoding];
	ULONG adapterAddressesSize = sizeof(IP_ADAPTER_ADDRESSES);
	PIP_ADAPTER_ADDRESSES adapterAddresses;

	if ((adapterAddresses = malloc(adapterAddressesSize)) == NULL)
		return nil;

	@try {
		OFStringEncoding encoding = [OFLocale encoding];
		ULONG error = GetAdaptersAddressesFuncPtr(AF_UNSPEC, 0, NULL,
		    adapterAddresses, &adapterAddressesSize);

		if (error == ERROR_BUFFER_OVERFLOW) {
			PIP_ADAPTER_ADDRESSES newAdapterAddresses =
			    realloc(adapterAddresses, adapterAddressesSize);

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				    OFNetworkInterfaceHardwareAddress;
				OFData *address = [OFData
				    dataWithItems: iter->PhysicalAddress
					    count: iter->PhysicalAddressLength];
				[interface setObject: address forKey: key];
			}

			for (PIP_ADAPTER_UNICAST_ADDRESS_LH addrIter =
			for (__typeof__(iter->FirstUnicastAddress) addrIter =
			    iter->FirstUnicastAddress; addrIter != NULL;
			    addrIter = addrIter->Next) {
				OFSocketAddress address;
				int length;
				OFNetworkInterfaceKey key;
				OFMutableData *addresses;

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		    iter = iter->Next) {
			OFMutableDictionary *interface;
			OFString *name, *IPString;
			OFNumber *index;
			OFSocketAddress IPv4Address;
			OFData *addresses;

			name = [OFString stringWithCString: iter->AdapterName
			name = [OFString stringWithFormat: @"%u", iter->Index];
						  encoding: encoding];

			if ((interface = [ret objectForKey: name]) == nil) {
				interface = [OFMutableDictionary dictionary];
				[ret setObject: interface forKey: name];
			}

			index = [OFNumber numberWithUnsignedInt: iter->Index];