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// Copyright 2011 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "chrome/browser/net/service_providers_win.h"
#include <winsock2.h>
#include <Ws2spi.h>
#include <memory>
#include "base/containers/heap_array.h"
#include "base/notreached.h"
#include "base/values.h"
WinsockLayeredServiceProvider::WinsockLayeredServiceProvider() = default;
WinsockLayeredServiceProvider::WinsockLayeredServiceProvider(
const WinsockLayeredServiceProvider& other) = default;
WinsockLayeredServiceProvider::~WinsockLayeredServiceProvider() = default;
void GetWinsockNamespaceProviders(
WinsockNamespaceProviderList* namespace_list) {
// Find out how just how much memory is needed. If we get the expected error,
// the memory needed is written to size.
DWORD size = 0;
if (WSAEnumNameSpaceProviders(&size, nullptr) != SOCKET_ERROR ||
GetLastError() != WSAEFAULT) {
NOTREACHED();
}
auto namespace_provider_bytes = base::HeapArray<uint8_t>::WithSize(size);
WSANAMESPACE_INFO* namespace_providers =
reinterpret_cast<WSANAMESPACE_INFO*>(namespace_provider_bytes.data());
int num_namespace_providers = WSAEnumNameSpaceProviders(&size,
namespace_providers);
if (num_namespace_providers == SOCKET_ERROR) {
NOTREACHED();
}
for (int i = 0; i < num_namespace_providers; ++i) {
WinsockNamespaceProvider provider;
provider.name = namespace_providers[i].lpszIdentifier;
provider.active = TRUE == namespace_providers[i].fActive;
provider.version = namespace_providers[i].dwVersion;
provider.type = namespace_providers[i].dwNameSpace;
namespace_list->push_back(provider);
}
}
void GetWinsockLayeredServiceProviders(
WinsockLayeredServiceProviderList* service_list) {
// Find out how just how much memory is needed. If we get the expected error,
// the memory needed is written to size.
DWORD size = 0;
int error;
if (SOCKET_ERROR != WSCEnumProtocols(nullptr, nullptr, &size, &error) ||
error != WSAENOBUFS) {
NOTREACHED();
}
auto service_provider_bytes = base::HeapArray<uint8_t>::WithSize(size);
WSAPROTOCOL_INFOW* service_providers =
reinterpret_cast<WSAPROTOCOL_INFOW*>(service_provider_bytes.data());
int num_service_providers =
WSCEnumProtocols(nullptr, service_providers, &size, &error);
if (num_service_providers == SOCKET_ERROR) {
NOTREACHED();
}
for (int i = 0; i < num_service_providers; ++i) {
WinsockLayeredServiceProvider service_provider;
service_provider.name = service_providers[i].szProtocol;
service_provider.version = service_providers[i].iVersion;
service_provider.socket_type = service_providers[i].iSocketType;
service_provider.socket_protocol = service_providers[i].iProtocol;
service_provider.chain_length = service_providers[i].ProtocolChain.ChainLen;
// TODO(mmenke): Add categories under Vista and later.
// http://msdn.microsoft.com/en-us/library/ms742239%28v=VS.85%29.aspx
wchar_t path[MAX_PATH];
int path_length = std::size(path);
if (0 == WSCGetProviderPath(&service_providers[i].ProviderId, path,
&path_length, &error)) {
service_provider.path = path;
}
service_list->push_back(service_provider);
}
return;
}
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