1 files changed, 113 insertions, 0 deletions
diff --git a/xpcom/windbgdlg/windbgdlg.cpp b/xpcom/windbgdlg/windbgdlg.cpp
new file mode 100644
index 0000000000..2bd1139b23
--- /dev/null
+++ b/xpcom/windbgdlg/windbgdlg.cpp
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/* Windows only app to show a modal debug dialog - launched by nsDebug.cpp */
+#include <windows.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
+#  include <strsafe.h>
+#endif
+#ifdef __MINGW32__
+/* MingW currently does not implement a wide version of the
+   startup routines.  Workaround is to implement something like
+   it ourselves.  See bug 472063 */
+#  include <stdio.h>
+#  include <shellapi.h>
+int WINAPI wWinMain(HINSTANCE, HINSTANCE, LPWSTR, int);
+
+#  undef __argc
+#  undef __wargv
+
+static int __argc;
+static wchar_t** __wargv;
+
+int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
+                   LPSTR lpszCommandLine, int nCmdShow) {
+  LPWSTR commandLine = GetCommandLineW();
+
+  /* parse for __argc and __wargv for compatibility, since mingw
+   * doesn't claim to support it :(
+   */
+  __wargv = CommandLineToArgvW(commandLine, &__argc);
+  if (!__wargv) return 127;
+
+  /* need to strip off any leading whitespace plus the first argument
+   * (the executable itself) to match what should be passed to wWinMain
+   */
+  while ((*commandLine <= L' ') && *commandLine) {
+    ++commandLine;
+  }
+  if (*commandLine == L'"') {
+    ++commandLine;
+    while ((*commandLine != L'"') && *commandLine) {
+      ++commandLine;
+    }
+    if (*commandLine) {
+      ++commandLine;
+    }
+  } else {
+    while (*commandLine > L' ') {
+      ++commandLine;
+    }
+  }
+  while ((*commandLine <= L' ') && *commandLine) {
+    ++commandLine;
+  }
+
+  int result = wWinMain(hInstance, hPrevInstance, commandLine, nCmdShow);
+  LocalFree(__wargv);
+  return result;
+}
+#endif /* __MINGW32__ */
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
+                    LPWSTR lpszCmdLine, int nCmdShow) {
+  /* support for auto answering based on words in the assertion.
+   * the assertion message is sent as a series of arguements (words) to the
+   * commandline. set a "word" to 0xffffffff to let the word not affect this
+   * code. set a "word" to 0xfffffffe to show the dialog. set a "word" to 0x5 to
+   * ignore (program should continue). set a "word" to 0x4 to retry (should fall
+   * into debugger). set a "word" to 0x3 to abort (die).
+   */
+  DWORD regType;
+  DWORD regValue = -1;
+  DWORD regLength = sizeof regValue;
+  HKEY hkeyCU, hkeyLM;
+  RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\mozilla.org\\windbgdlg", 0,
+                KEY_READ, &hkeyCU);
+  RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"Software\\mozilla.org\\windbgdlg", 0,
+                KEY_READ, &hkeyLM);
+  for (int i = __argc - 1; regValue == (DWORD)-1 && i; --i) {
+    bool ok = false;
+    if (hkeyCU)
+      ok = RegQueryValueExW(hkeyCU, __wargv[i], 0, &regType, (LPBYTE)&regValue,
+                            &regLength) == ERROR_SUCCESS;
+    if (!ok && hkeyLM)
+      ok = RegQueryValueExW(hkeyLM, __wargv[i], 0, &regType, (LPBYTE)&regValue,
+                            &regLength) == ERROR_SUCCESS;
+    if (!ok) regValue = -1;
+  }
+  if (hkeyCU) RegCloseKey(hkeyCU);
+  if (hkeyLM) RegCloseKey(hkeyLM);
+  if (regValue != (DWORD)-1 && regValue != (DWORD)-2) return regValue;
+  static const int size = 4096;
+  static WCHAR msg[size];
+
+#ifdef _MSC_VER
+  StringCchPrintfW(msg,
+#else
+  snwprintf(msg,
+#endif
+                   size,
+                   L"%s\n\nClick Abort to exit the Application.\n"
+                   L"Click Retry to Debug the Application.\n"
+                   L"Click Ignore to continue running the Application.",
+                   lpszCmdLine);
+  msg[size - 1] = L'\0';
+  return MessageBoxW(
+      nullptr, msg, L"NSGlue_Assertion",
+      MB_ICONSTOP | MB_SYSTEMMODAL | MB_ABORTRETRYIGNORE | MB_DEFBUTTON3);
+}