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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_WINHTTP_NET_UTIL_H_
#define COMPONENTS_WINHTTP_NET_UTIL_H_
#include <windows.h>
#include <winhttp.h>
#include <stdint.h>
#include <string>
#include "base/check_op.h"
namespace winhttp {
// Returns the last error as an HRESULT or E_FAIL if last error is NO_ERROR.
// This is not a drop in replacement for the HRESULT_FROM_WIN32 macro.
// The macro maps a NO_ERROR to S_OK, whereas the HRESULTFromLastError maps a
// NO_ERROR to E_FAIL.
HRESULT HRESULTFromLastError();
// Returns HTTP response headers from the given request as strings.
HRESULT QueryHeadersString(HINTERNET request_handle,
uint32_t info_level,
const wchar_t* name,
std::wstring* value);
// Returns HTTP response headers from the given request as integers.
HRESULT QueryHeadersInt(HINTERNET request_handle,
uint32_t info_level,
const wchar_t* name,
int* value);
// Queries WinHTTP options for the given |handle|. Returns S_OK if the call
// is successful.
template <typename T>
HRESULT QueryOption(HINTERNET handle, uint32_t option, T* value) {
auto num_bytes = sizeof(*value);
if (!::WinHttpQueryOption(handle, option, value, &num_bytes)) {
DCHECK_EQ(sizeof(*value), num_bytes);
return HRESULTFromLastError();
}
return S_OK;
}
// Sets WinHTTP options for the given |handle|. Returns S_OK if the call
// is successful.
template <typename T>
HRESULT SetOption(HINTERNET handle, uint32_t option, T value) {
if (!::WinHttpSetOption(handle, option, &value, sizeof(value)))
return HRESULTFromLastError();
return S_OK;
}
} // namespace winhttp
#endif // COMPONENTS_WINHTTP_NET_UTIL_H_
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