1 files changed, 81 insertions, 0 deletions
diff --git a/toolkit/mozapps/defaultagent/common.cpp b/toolkit/mozapps/defaultagent/common.cpp
new file mode 100644
index 0000000000..588ede5d91
--- /dev/null
+++ b/toolkit/mozapps/defaultagent/common.cpp
@@ -0,0 +1,81 @@
+/* -*- 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);
+}