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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "common.h"
#include "EventLog.h"
#include <windows.h>
ULONGLONG GetCurrentTimestamp() {
FILETIME filetime;
GetSystemTimeAsFileTime(&filetime);
ULARGE_INTEGER integerTime;
integerTime.u.LowPart = filetime.dwLowDateTime;
integerTime.u.HighPart = filetime.dwHighDateTime;
return integerTime.QuadPart;
}
// Passing a zero as the second argument (or omitting it) causes the function
// to get the current time rather than using a passed value.
ULONGLONG SecondsPassedSince(ULONGLONG initialTime,
ULONGLONG currentTime /* = 0 */) {
if (currentTime == 0) {
currentTime = GetCurrentTimestamp();
}
// Since this is returning an unsigned value, let's make sure we don't try to
// return anything negative
if (initialTime >= currentTime) {
return 0;
}
// These timestamps are expressed in 100-nanosecond intervals
return (currentTime - initialTime) / 10 // To microseconds
/ 1000 // To milliseconds
/ 1000; // To seconds
}
FilePathResult GenerateUUIDStr() {
UUID uuid;
RPC_STATUS status = UuidCreate(&uuid);
if (status != RPC_S_OK) {
HRESULT hr = MAKE_HRESULT(1, FACILITY_RPC, status);
LOG_ERROR(hr);
return FilePathResult(mozilla::WindowsError::FromHResult(hr));
}
// 39 == length of a UUID string including braces and NUL.
wchar_t guidBuf[39] = {};
if (StringFromGUID2(uuid, guidBuf, 39) != 39) {
LOG_ERROR(HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER));
return FilePathResult(
mozilla::WindowsError::FromWin32Error(ERROR_INSUFFICIENT_BUFFER));
}
// Remove the curly braces.
return std::wstring(guidBuf + 1, guidBuf + 37);
}
FilePathResult GetRelativeBinaryPath(const wchar_t* suffix) {
// The Path* functions don't set LastError, but this is the only thing that
// can really cause them to fail, so if they ever do we assume this is why.
HRESULT hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
mozilla::UniquePtr<wchar_t[]> thisBinaryPath = mozilla::GetFullBinaryPath();
if (!PathRemoveFileSpecW(thisBinaryPath.get())) {
LOG_ERROR(hr);
return FilePathResult(mozilla::WindowsError::FromHResult(hr));
}
wchar_t relativePath[MAX_PATH] = L"";
if (!PathCombineW(relativePath, thisBinaryPath.get(), suffix)) {
LOG_ERROR(hr);
return FilePathResult(mozilla::WindowsError::FromHResult(hr));
}
return std::wstring(relativePath);
}
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