| // Copyright 2020 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/proxy_resolution/win/winhttp_proxy_resolver_functions.h" |
| |
| namespace net { |
| |
| WinHttpProxyResolverFunctions::WinHttpProxyResolverFunctions() { |
| HMODULE winhttp_module = |
| LoadLibraryEx(L"winhttp.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32); |
| if (winhttp_module) { |
| create_proxy_resolver = reinterpret_cast<WinHttpCreateProxyResolverFunc>( |
| ::GetProcAddress(winhttp_module, "WinHttpCreateProxyResolver")); |
| get_proxy_for_url_ex = reinterpret_cast<WinHttpGetProxyForUrlExFunc>( |
| ::GetProcAddress(winhttp_module, "WinHttpGetProxyForUrlEx")); |
| get_proxy_result = reinterpret_cast<WinHttpGetProxyResultFunc>( |
| ::GetProcAddress(winhttp_module, "WinHttpGetProxyResult")); |
| free_proxy_result = reinterpret_cast<WinHttpFreeProxyResultFunc>( |
| ::GetProcAddress(winhttp_module, "WinHttpFreeProxyResult")); |
| } |
| } |
| |
| // Never called due to base::NoDestructor. |
| WinHttpProxyResolverFunctions::~WinHttpProxyResolverFunctions() = default; |
| |
| bool WinHttpProxyResolverFunctions::are_all_functions_loaded() const { |
| return create_proxy_resolver && get_proxy_for_url_ex && get_proxy_result && |
| free_proxy_result; |
| } |
| |
| // static |
| const WinHttpProxyResolverFunctions& |
| WinHttpProxyResolverFunctions::GetInstance() { |
| // This is a singleton for performance reasons. This avoids having to load |
| // proxy resolver functions multiple times. |
| static base::NoDestructor<WinHttpProxyResolverFunctions> instance; |
| return *instance; |
| } |
| |
| } // namespace net |
