Add m-esr52 at 52.6.0

1 files changed, 883 insertions, 0 deletions

diff --git a/uriloader/exthandler/win/nsMIMEInfoWin.cpp b/uriloader/exthandler/win/nsMIMEInfoWin.cpp
new file mode 100644
index 000000000..2c7171c87
--- /dev/null
+++ b/uriloader/exthandler/win/nsMIMEInfoWin.cpp
@@ -0,0 +1,883 @@
+/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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 "nsArrayEnumerator.h"
+#include "nsCOMArray.h"
+#include "nsLocalFile.h"
+#include "nsMIMEInfoWin.h"
+#include "nsNetUtil.h"
+#include <windows.h>
+#include <shellapi.h>
+#include "nsAutoPtr.h"
+#include "nsIMutableArray.h"
+#include "nsTArray.h"
+#include "shlobj.h"
+#include "windows.h"
+#include "nsIWindowsRegKey.h"
+#include "nsIProcess.h"
+#include "nsUnicharUtils.h"
+#include "nsITextToSubURI.h"
+#include "nsVariant.h"
+#include "mozilla/UniquePtrExtensions.h"
+
+#define RUNDLL32_EXE L"\\rundll32.exe"
+
+
+NS_IMPL_ISUPPORTS_INHERITED(nsMIMEInfoWin, nsMIMEInfoBase, nsIPropertyBag)
+
+nsMIMEInfoWin::~nsMIMEInfoWin()
+{
+}
+
+nsresult
+nsMIMEInfoWin::LaunchDefaultWithFile(nsIFile* aFile)
+{
+  // Launch the file, unless it is an executable.
+  bool executable = true;
+  aFile->IsExecutable(&executable);
+  if (executable)
+    return NS_ERROR_FAILURE;
+
+  return aFile->Launch();
+}
+
+NS_IMETHODIMP
+nsMIMEInfoWin::LaunchWithFile(nsIFile* aFile)
+{
+  nsresult rv;
+
+  // it doesn't make any sense to call this on protocol handlers
+  NS_ASSERTION(mClass == eMIMEInfo,
+               "nsMIMEInfoBase should have mClass == eMIMEInfo");
+
+  if (mPreferredAction == useSystemDefault) {
+    return LaunchDefaultWithFile(aFile);
+  }
+
+  if (mPreferredAction == useHelperApp) {
+    if (!mPreferredApplication)
+      return NS_ERROR_FILE_NOT_FOUND;
+
+    // at the moment, we only know how to hand files off to local handlers
+    nsCOMPtr<nsILocalHandlerApp> localHandler = 
+      do_QueryInterface(mPreferredApplication, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIFile> executable;
+    rv = localHandler->GetExecutable(getter_AddRefs(executable));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsAutoString path;
+    aFile->GetPath(path);
+
+    // Deal with local dll based handlers
+    nsCString filename;
+    executable->GetNativeLeafName(filename);
+    if (filename.Length() > 4) {
+      nsCString extension(Substring(filename, filename.Length() - 4, 4));
+
+      if (extension.LowerCaseEqualsLiteral(".dll")) {
+        nsAutoString args;
+
+        // executable is rundll32, everything else is a list of parameters, 
+        // including the dll handler.
+        if (!GetDllLaunchInfo(executable, aFile, args, false))
+          return NS_ERROR_INVALID_ARG;
+
+        WCHAR rundll32Path[MAX_PATH + sizeof(RUNDLL32_EXE) / sizeof(WCHAR) + 1] = {L'\0'};
+        if (!GetSystemDirectoryW(rundll32Path, MAX_PATH)) {
+          return NS_ERROR_FILE_NOT_FOUND;
+        }
+        lstrcatW(rundll32Path, RUNDLL32_EXE);
+
+        SHELLEXECUTEINFOW seinfo;
+        memset(&seinfo, 0, sizeof(seinfo));
+        seinfo.cbSize = sizeof(SHELLEXECUTEINFOW);
+        seinfo.fMask  = 0;
+        seinfo.hwnd   = nullptr;
+        seinfo.lpVerb = nullptr;
+        seinfo.lpFile = rundll32Path;
+        seinfo.lpParameters =  args.get();
+        seinfo.lpDirectory  = nullptr;
+        seinfo.nShow  = SW_SHOWNORMAL;
+        if (ShellExecuteExW(&seinfo))
+          return NS_OK;
+
+        switch ((LONG_PTR)seinfo.hInstApp) {
+          case 0:
+          case SE_ERR_OOM:
+            return NS_ERROR_OUT_OF_MEMORY;
+          case SE_ERR_ACCESSDENIED:
+            return NS_ERROR_FILE_ACCESS_DENIED;
+          case SE_ERR_ASSOCINCOMPLETE:
+          case SE_ERR_NOASSOC:
+            return NS_ERROR_UNEXPECTED;
+          case SE_ERR_DDEBUSY:
+          case SE_ERR_DDEFAIL:
+          case SE_ERR_DDETIMEOUT:
+            return NS_ERROR_NOT_AVAILABLE;
+          case SE_ERR_DLLNOTFOUND:
+            return NS_ERROR_FAILURE;
+          case SE_ERR_SHARE:
+            return NS_ERROR_FILE_IS_LOCKED;
+          default:
+            switch(GetLastError()) {
+              case ERROR_FILE_NOT_FOUND:
+                return NS_ERROR_FILE_NOT_FOUND;
+              case ERROR_PATH_NOT_FOUND:
+                return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+              case ERROR_BAD_FORMAT:
+                return NS_ERROR_FILE_CORRUPTED;
+            }
+
+        }
+        return NS_ERROR_FILE_EXECUTION_FAILED;
+      }
+    }
+    return LaunchWithIProcess(executable, path);
+  }
+
+  return NS_ERROR_INVALID_ARG;
+}
+
+NS_IMETHODIMP
+nsMIMEInfoWin::GetHasDefaultHandler(bool * _retval)
+{
+  // We have a default application if we have a description
+  // We can ShellExecute anything; however, callers are probably interested if
+  // there is really an application associated with this type of file
+  *_retval = !mDefaultAppDescription.IsEmpty();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMIMEInfoWin::GetEnumerator(nsISimpleEnumerator* *_retval)
+{
+  nsCOMArray<nsIVariant> properties;
+
+  nsCOMPtr<nsIVariant> variant;
+  GetProperty(NS_LITERAL_STRING("defaultApplicationIconURL"), getter_AddRefs(variant));
+  if (variant)
+    properties.AppendObject(variant);
+
+  GetProperty(NS_LITERAL_STRING("customApplicationIconURL"), getter_AddRefs(variant));
+  if (variant)
+    properties.AppendObject(variant);
+
+  return NS_NewArrayEnumerator(_retval, properties);
+}
+
+static nsresult GetIconURLVariant(nsIFile* aApplication, nsIVariant* *_retval)
+{
+  nsAutoCString fileURLSpec;
+  NS_GetURLSpecFromFile(aApplication, fileURLSpec);
+  nsAutoCString iconURLSpec; iconURLSpec.AssignLiteral("moz-icon://");
+  iconURLSpec += fileURLSpec;
+  RefPtr<nsVariant> writable(new nsVariant());
+  writable->SetAsAUTF8String(iconURLSpec);
+  writable.forget(_retval);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMIMEInfoWin::GetProperty(const nsAString& aName, nsIVariant* *_retval)
+{
+  nsresult rv;
+  if (mDefaultApplication && aName.EqualsLiteral(PROPERTY_DEFAULT_APP_ICON_URL)) {
+    rv = GetIconURLVariant(mDefaultApplication, _retval);
+    NS_ENSURE_SUCCESS(rv, rv);    
+  } else if (mPreferredApplication && 
+             aName.EqualsLiteral(PROPERTY_CUSTOM_APP_ICON_URL)) {
+    nsCOMPtr<nsILocalHandlerApp> localHandler =
+      do_QueryInterface(mPreferredApplication, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+    
+    nsCOMPtr<nsIFile> executable;
+    rv = localHandler->GetExecutable(getter_AddRefs(executable));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = GetIconURLVariant(executable, _retval);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  return NS_OK;
+}
+
+// this implementation was pretty much copied verbatime from 
+// Tony Robinson's code in nsExternalProtocolWin.cpp
+nsresult
+nsMIMEInfoWin::LoadUriInternal(nsIURI * aURL)
+{
+  nsresult rv = NS_OK;
+
+  // 1. Find the default app for this protocol
+  // 2. Set up the command line
+  // 3. Launch the app.
+
+  // For now, we'll just cheat essentially, check for the command line
+  // then just call ShellExecute()!
+
+  if (aURL)
+  {
+    // extract the url spec from the url
+    nsAutoCString urlSpec;
+    aURL->GetAsciiSpec(urlSpec);
+ 
+    // Unescape non-ASCII characters in the URL
+    nsAutoCString urlCharset;
+    nsAutoString utf16Spec;
+    rv = aURL->GetOriginCharset(urlCharset);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsITextToSubURI> textToSubURI = do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (NS_FAILED(textToSubURI->UnEscapeNonAsciiURI(urlCharset, urlSpec, utf16Spec))) {
+      CopyASCIItoUTF16(urlSpec, utf16Spec);
+    }
+
+    static const wchar_t cmdVerb[] = L"open";
+    SHELLEXECUTEINFOW sinfo;
+    memset(&sinfo, 0, sizeof(sinfo));
+    sinfo.cbSize   = sizeof(sinfo);
+    sinfo.fMask    = SEE_MASK_FLAG_DDEWAIT |
+      SEE_MASK_FLAG_NO_UI;
+    sinfo.hwnd     = nullptr;
+    sinfo.lpVerb   = (LPWSTR)&cmdVerb;
+    sinfo.nShow    = SW_SHOWNORMAL;
+    
+    LPITEMIDLIST pidl = nullptr;
+    SFGAOF sfgao;
+    
+    // Bug 394974
+    if (SUCCEEDED(SHParseDisplayName(utf16Spec.get(), nullptr,
+                                     &pidl, 0, &sfgao))) {
+      sinfo.lpIDList = pidl;
+      sinfo.fMask |= SEE_MASK_INVOKEIDLIST;
+    } else {
+      // SHParseDisplayName failed. Bailing out as work around for
+      // Microsoft Security Bulletin MS07-061
+      rv = NS_ERROR_FAILURE;
+    }
+    if (NS_SUCCEEDED(rv)) {
+      BOOL result = ShellExecuteExW(&sinfo);
+      if (!result || ((LONG_PTR)sinfo.hInstApp) < 32)
+        rv = NS_ERROR_FAILURE;
+    }
+    if (pidl)
+      CoTaskMemFree(pidl);
+  }
+  
+  return rv;
+}
+
+// Given a path to a local file, return its nsILocalHandlerApp instance.
+bool nsMIMEInfoWin::GetLocalHandlerApp(const nsAString& aCommandHandler,
+                                         nsCOMPtr<nsILocalHandlerApp>& aApp)
+{
+  nsCOMPtr<nsIFile> locfile;
+  nsresult rv = 
+    NS_NewLocalFile(aCommandHandler, true, getter_AddRefs(locfile));
+  if (NS_FAILED(rv))
+    return false;
+
+  aApp = do_CreateInstance("@mozilla.org/uriloader/local-handler-app;1");
+  if (!aApp) 
+    return false;
+
+  aApp->SetExecutable(locfile);
+  return true;
+}
+
+// Return the cleaned up file path associated with a command verb 
+// located in root/Applications.
+bool nsMIMEInfoWin::GetAppsVerbCommandHandler(const nsAString& appExeName,
+                                                nsAString& applicationPath,
+                                                bool edit)
+{
+  nsCOMPtr<nsIWindowsRegKey> appKey = 
+    do_CreateInstance("@mozilla.org/windows-registry-key;1");
+  if (!appKey) 
+    return false; 
+
+  // HKEY_CLASSES_ROOT\Applications\iexplore.exe
+  nsAutoString applicationsPath;
+  applicationsPath.AppendLiteral("Applications\\");
+  applicationsPath.Append(appExeName);
+
+  nsresult rv = appKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                             applicationsPath,
+                             nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+  if (NS_FAILED(rv)) 
+    return false;
+
+  // Check for the NoOpenWith flag, if it exists
+  uint32_t value;
+  if (NS_SUCCEEDED(appKey->ReadIntValue(
+      NS_LITERAL_STRING("NoOpenWith"), &value)) &&
+      value == 1)
+    return false;
+
+  nsAutoString dummy;
+  if (NS_SUCCEEDED(appKey->ReadStringValue(
+        NS_LITERAL_STRING("NoOpenWith"), dummy)))
+    return false;
+
+  appKey->Close();
+
+  // HKEY_CLASSES_ROOT\Applications\iexplore.exe\shell\open\command
+  applicationsPath.AssignLiteral("Applications\\");
+  applicationsPath.Append(appExeName);
+  if (!edit)
+    applicationsPath.AppendLiteral("\\shell\\open\\command");
+  else
+    applicationsPath.AppendLiteral("\\shell\\edit\\command");
+
+
+  rv = appKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                    applicationsPath,
+                    nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+  if (NS_FAILED(rv)) 
+    return false;
+
+  nsAutoString appFilesystemCommand;
+  if (NS_SUCCEEDED(appKey->ReadStringValue(EmptyString(), 
+                                           appFilesystemCommand))) {
+    
+    // Expand environment vars, clean up any misc.
+    if (!nsLocalFile::CleanupCmdHandlerPath(appFilesystemCommand))
+      return false;
+    
+    applicationPath = appFilesystemCommand;
+    return true;
+  }
+  return false;
+}
+
+// Return a fully populated command string based on
+// passing information. Used in launchWithFile to trace
+// back to the full handler path based on the dll.
+// (dll, targetfile, return args, open/edit)
+bool nsMIMEInfoWin::GetDllLaunchInfo(nsIFile * aDll,
+                                       nsIFile * aFile,
+                                       nsAString& args,
+                                       bool edit)
+{
+  if (!aDll || !aFile) 
+    return false;
+
+  nsString appExeName;
+  aDll->GetLeafName(appExeName);
+
+  nsCOMPtr<nsIWindowsRegKey> appKey = 
+    do_CreateInstance("@mozilla.org/windows-registry-key;1");
+  if (!appKey) 
+    return false; 
+
+  // HKEY_CLASSES_ROOT\Applications\iexplore.exe
+  nsAutoString applicationsPath;
+  applicationsPath.AppendLiteral("Applications\\");
+  applicationsPath.Append(appExeName);
+
+  nsresult rv = appKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                             applicationsPath,
+                             nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+  if (NS_FAILED(rv))
+    return false;
+
+  // Check for the NoOpenWith flag, if it exists
+  uint32_t value;
+  rv = appKey->ReadIntValue(NS_LITERAL_STRING("NoOpenWith"), &value);
+  if (NS_SUCCEEDED(rv) && value == 1)
+    return false;
+
+  nsAutoString dummy;
+  if (NS_SUCCEEDED(appKey->ReadStringValue(NS_LITERAL_STRING("NoOpenWith"), 
+                                           dummy)))
+    return false;
+
+  appKey->Close();
+
+  // HKEY_CLASSES_ROOT\Applications\iexplore.exe\shell\open\command
+  applicationsPath.AssignLiteral("Applications\\");
+  applicationsPath.Append(appExeName);
+  if (!edit)
+    applicationsPath.AppendLiteral("\\shell\\open\\command");
+  else
+    applicationsPath.AppendLiteral("\\shell\\edit\\command");
+
+  rv = appKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                    applicationsPath,
+                    nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+  if (NS_FAILED(rv))
+    return false;
+
+  nsAutoString appFilesystemCommand;
+  if (NS_SUCCEEDED(appKey->ReadStringValue(EmptyString(),
+                                           appFilesystemCommand))) {
+    // Replace embedded environment variables.
+    uint32_t bufLength = 
+      ::ExpandEnvironmentStringsW(appFilesystemCommand.get(),
+                                  L"", 0);
+    if (bufLength == 0) // Error
+      return false;
+
+    auto destination = mozilla::MakeUniqueFallible<wchar_t[]>(bufLength);
+    if (!destination)
+      return false;
+    if (!::ExpandEnvironmentStringsW(appFilesystemCommand.get(),
+                                     destination.get(),
+                                     bufLength))
+      return false;
+
+    appFilesystemCommand.Assign(destination.get());
+
+    // C:\Windows\System32\rundll32.exe "C:\Program Files\Windows 
+    // Photo Gallery\PhotoViewer.dll", ImageView_Fullscreen %1
+    nsAutoString params;
+    NS_NAMED_LITERAL_STRING(rundllSegment, "rundll32.exe ");
+    int32_t index = appFilesystemCommand.Find(rundllSegment);
+    if (index > kNotFound) {
+      params.Append(Substring(appFilesystemCommand,
+                    index + rundllSegment.Length()));
+    } else {
+      params.Append(appFilesystemCommand);
+    }
+
+    // check to make sure we have a %1 and fill it
+    NS_NAMED_LITERAL_STRING(percentOneParam, "%1");
+    index = params.Find(percentOneParam);
+    if (index == kNotFound) // no parameter
+      return false;
+
+    nsString target;
+    aFile->GetTarget(target);
+    params.Replace(index, 2, target);
+
+    args = params;
+
+    return true;
+  }
+  return false;
+}
+
+// Return the cleaned up file path associated with a progid command 
+// verb located in root.
+bool nsMIMEInfoWin::GetProgIDVerbCommandHandler(const nsAString& appProgIDName,
+                                                  nsAString& applicationPath,
+                                                  bool edit)
+{
+  nsCOMPtr<nsIWindowsRegKey> appKey =
+    do_CreateInstance("@mozilla.org/windows-registry-key;1");
+  if (!appKey) 
+    return false; 
+
+  nsAutoString appProgId(appProgIDName);
+
+  // HKEY_CLASSES_ROOT\Windows.XPSReachViewer\shell\open\command
+  if (!edit)
+    appProgId.AppendLiteral("\\shell\\open\\command");
+  else
+    appProgId.AppendLiteral("\\shell\\edit\\command");
+
+  nsresult rv = appKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                             appProgId,
+                             nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+  if (NS_FAILED(rv))
+    return false;
+
+  nsAutoString appFilesystemCommand;
+  if (NS_SUCCEEDED(appKey->ReadStringValue(EmptyString(), appFilesystemCommand))) {
+    
+    // Expand environment vars, clean up any misc.
+    if (!nsLocalFile::CleanupCmdHandlerPath(appFilesystemCommand))
+      return false;
+    
+    applicationPath = appFilesystemCommand;
+    return true;
+  }
+  return false;
+}
+
+// Helper routine used in tracking app lists. Converts path
+// entries to lower case and stores them in the trackList array.
+void nsMIMEInfoWin::ProcessPath(nsCOMPtr<nsIMutableArray>& appList,
+                                nsTArray<nsString>& trackList,
+                                const nsAString& appFilesystemCommand)
+{
+  nsAutoString lower(appFilesystemCommand);
+  ToLowerCase(lower);
+
+  // Don't include firefox.exe in the list
+  WCHAR exe[MAX_PATH+1];
+  uint32_t len = GetModuleFileNameW(nullptr, exe, MAX_PATH);
+  if (len < MAX_PATH && len != 0) {
+    uint32_t index = lower.Find(exe);
+    if (index != -1)
+      return;
+  }
+
+  nsCOMPtr<nsILocalHandlerApp> aApp;
+  if (!GetLocalHandlerApp(appFilesystemCommand, aApp))
+    return;
+
+  // Save in our main tracking arrays
+  appList->AppendElement(aApp, false);
+  trackList.AppendElement(lower);
+}
+
+// Helper routine that handles a compare between a path
+// and an array of paths.
+static bool IsPathInList(nsAString& appPath,
+                           nsTArray<nsString>& trackList)
+{
+  // trackList data is always lowercase, see ProcessPath
+  // above.
+  nsAutoString tmp(appPath);
+  ToLowerCase(tmp);
+
+  for (uint32_t i = 0; i < trackList.Length(); i++) {
+    if (tmp.Equals(trackList[i]))
+      return true;
+  }
+  return false;
+}
+
+/** 
+ * Returns a list of nsILocalHandlerApp objects containing local 
+ * handlers associated with this mimeinfo. Implemented per 
+ * platform using information in this object to generate the
+ * best list. Typically used for an "open with" style user 
+ * option.
+ * 
+ * @return nsIArray of nsILocalHandlerApp
+ */
+NS_IMETHODIMP
+nsMIMEInfoWin::GetPossibleLocalHandlers(nsIArray **_retval)
+{
+  nsresult rv;
+
+  *_retval = nullptr;
+
+  nsCOMPtr<nsIMutableArray> appList =
+    do_CreateInstance("@mozilla.org/array;1");
+
+  if (!appList)
+    return NS_ERROR_FAILURE;
+
+  nsTArray<nsString> trackList;
+
+  nsAutoCString fileExt;
+  GetPrimaryExtension(fileExt);
+
+  nsCOMPtr<nsIWindowsRegKey> regKey =
+    do_CreateInstance("@mozilla.org/windows-registry-key;1");
+  if (!regKey) 
+    return NS_ERROR_FAILURE; 
+  nsCOMPtr<nsIWindowsRegKey> appKey =
+    do_CreateInstance("@mozilla.org/windows-registry-key;1");
+  if (!appKey) 
+    return NS_ERROR_FAILURE; 
+
+  nsAutoString workingRegistryPath;
+
+  bool extKnown = false;
+  if (fileExt.IsEmpty()) {
+    extKnown = true;
+    // Mime type discovery is possible in some cases, through 
+    // HKEY_CLASSES_ROOT\MIME\Database\Content Type, however, a number
+    // of file extensions related to mime type are simply not defined,
+    // (application/rss+xml & application/atom+xml are good examples)
+    // in which case we can only provide a generic list.
+    nsAutoCString mimeType;
+    GetMIMEType(mimeType);
+    if (!mimeType.IsEmpty()) {
+      workingRegistryPath.AppendLiteral("MIME\\Database\\Content Type\\");
+      workingRegistryPath.Append(NS_ConvertASCIItoUTF16(mimeType));
+            
+      rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                        workingRegistryPath,
+                        nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+      if(NS_SUCCEEDED(rv)) {
+        nsAutoString mimeFileExt;
+        if (NS_SUCCEEDED(regKey->ReadStringValue(EmptyString(), mimeFileExt))) {
+          CopyUTF16toUTF8(mimeFileExt, fileExt);
+          extKnown = false;
+        }
+      }
+    }
+  }
+
+  nsAutoString fileExtToUse;
+  if (fileExt.First() != '.')
+    fileExtToUse = char16_t('.');
+  fileExtToUse.Append(NS_ConvertUTF8toUTF16(fileExt));
+
+  // Note, the order in which these occur has an effect on the 
+  // validity of the resulting display list.
+
+  if (!extKnown) {
+    // 1) Get the default handler if it exists
+    workingRegistryPath = fileExtToUse;
+
+    rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                      workingRegistryPath,
+                      nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+    if (NS_SUCCEEDED(rv)) {
+      nsAutoString appProgId;
+      if (NS_SUCCEEDED(regKey->ReadStringValue(EmptyString(), appProgId))) {
+        // Bug 358297 - ignore the embedded internet explorer handler
+        if (appProgId != NS_LITERAL_STRING("XPSViewer.Document")) {
+          nsAutoString appFilesystemCommand;
+          if (GetProgIDVerbCommandHandler(appProgId,
+                                          appFilesystemCommand,
+                                          false) &&
+              !IsPathInList(appFilesystemCommand, trackList)) {
+            ProcessPath(appList, trackList, appFilesystemCommand);
+          }
+        }
+      }
+      regKey->Close();
+    }
+
+
+    // 2) list HKEY_CLASSES_ROOT\.ext\OpenWithList
+    
+    workingRegistryPath = fileExtToUse;
+    workingRegistryPath.AppendLiteral("\\OpenWithList");
+
+    rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                      workingRegistryPath,
+                      nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+    if (NS_SUCCEEDED(rv)) {
+      uint32_t count = 0;
+      if (NS_SUCCEEDED(regKey->GetValueCount(&count)) && count > 0) {
+        for (uint32_t index = 0; index < count; index++) {
+          nsAutoString appName;
+          if (NS_FAILED(regKey->GetValueName(index, appName)))
+            continue;
+
+          // HKEY_CLASSES_ROOT\Applications\firefox.exe = "path params"
+          nsAutoString appFilesystemCommand;
+          if (!GetAppsVerbCommandHandler(appName,
+                                         appFilesystemCommand,
+                                         false) ||
+              IsPathInList(appFilesystemCommand, trackList))
+            continue;
+          ProcessPath(appList, trackList, appFilesystemCommand);
+        }
+      }
+      regKey->Close();
+    }
+
+
+    // 3) List HKEY_CLASSES_ROOT\.ext\OpenWithProgids, with the
+    // different step of resolving the progids for the command handler.
+
+    workingRegistryPath = fileExtToUse;
+    workingRegistryPath.AppendLiteral("\\OpenWithProgids");
+
+    rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                      workingRegistryPath,
+                      nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+    if (NS_SUCCEEDED(rv)) {
+      uint32_t count = 0;
+      if (NS_SUCCEEDED(regKey->GetValueCount(&count)) && count > 0) {
+        for (uint32_t index = 0; index < count; index++) {
+          // HKEY_CLASSES_ROOT\.ext\OpenWithProgids\Windows.XPSReachViewer
+          nsAutoString appProgId;
+          if (NS_FAILED(regKey->GetValueName(index, appProgId)))
+            continue;
+
+          nsAutoString appFilesystemCommand;
+          if (!GetProgIDVerbCommandHandler(appProgId,
+                                           appFilesystemCommand,
+                                           false) ||
+              IsPathInList(appFilesystemCommand, trackList))
+            continue;
+          ProcessPath(appList, trackList, appFilesystemCommand);
+        }
+      }
+      regKey->Close();
+    }
+
+
+    // 4) Add any non configured applications located in the MRU list
+
+    // HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion
+    // \Explorer\FileExts\.ext\OpenWithList
+    workingRegistryPath =
+      NS_LITERAL_STRING("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\FileExts\\");
+    workingRegistryPath += fileExtToUse;
+    workingRegistryPath.AppendLiteral("\\OpenWithList");
+
+    rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
+                      workingRegistryPath,
+                      nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+    if (NS_SUCCEEDED(rv)) {
+      uint32_t count = 0;
+      if (NS_SUCCEEDED(regKey->GetValueCount(&count)) && count > 0) {
+        for (uint32_t index = 0; index < count; index++) {
+          nsAutoString appName, appValue;
+          if (NS_FAILED(regKey->GetValueName(index, appName)))
+            continue;
+          if (appName.EqualsLiteral("MRUList"))
+            continue;
+          if (NS_FAILED(regKey->ReadStringValue(appName, appValue)))
+            continue;
+          
+          // HKEY_CLASSES_ROOT\Applications\firefox.exe = "path params"
+          nsAutoString appFilesystemCommand;
+          if (!GetAppsVerbCommandHandler(appValue,
+                                         appFilesystemCommand,
+                                         false) ||
+              IsPathInList(appFilesystemCommand, trackList))
+            continue;
+          ProcessPath(appList, trackList, appFilesystemCommand);
+        }
+      }
+    }
+    
+
+    // 5) Add any non configured progids in the MRU list, with the
+    // different step of resolving the progids for the command handler.
+    
+    // HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion
+    // \Explorer\FileExts\.ext\OpenWithProgids
+    workingRegistryPath =
+      NS_LITERAL_STRING("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\FileExts\\");
+    workingRegistryPath += fileExtToUse;
+    workingRegistryPath.AppendLiteral("\\OpenWithProgids");
+
+    regKey->Open(nsIWindowsRegKey::ROOT_KEY_CURRENT_USER,
+                 workingRegistryPath,
+                 nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+    if (NS_SUCCEEDED(rv)) {
+      uint32_t count = 0;
+      if (NS_SUCCEEDED(regKey->GetValueCount(&count)) && count > 0) {
+        for (uint32_t index = 0; index < count; index++) {
+          nsAutoString appIndex, appProgId;
+          if (NS_FAILED(regKey->GetValueName(index, appProgId)))
+            continue;
+
+          nsAutoString appFilesystemCommand;
+          if (!GetProgIDVerbCommandHandler(appProgId,
+                                           appFilesystemCommand,
+                                           false) ||
+              IsPathInList(appFilesystemCommand, trackList))
+            continue;
+          ProcessPath(appList, trackList, appFilesystemCommand);
+        }
+      }
+      regKey->Close();
+    }
+
+
+    // 6) Check the perceived type value, and use this to lookup the perceivedtype
+    // open with list.
+    // http://msdn2.microsoft.com/en-us/library/aa969373.aspx
+
+    workingRegistryPath = fileExtToUse;
+
+    regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                 workingRegistryPath,
+                 nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+    if (NS_SUCCEEDED(rv)) {
+      nsAutoString perceivedType;
+      rv = regKey->ReadStringValue(NS_LITERAL_STRING("PerceivedType"),
+                                   perceivedType);
+      if (NS_SUCCEEDED(rv)) {
+        nsAutoString openWithListPath(NS_LITERAL_STRING("SystemFileAssociations\\"));
+        openWithListPath.Append(perceivedType); // no period
+        openWithListPath.AppendLiteral("\\OpenWithList");
+
+        nsresult rv = appKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                                   openWithListPath,
+                                   nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+        if (NS_SUCCEEDED(rv)) {
+          uint32_t count = 0;
+          if (NS_SUCCEEDED(regKey->GetValueCount(&count)) && count > 0) {
+            for (uint32_t index = 0; index < count; index++) {
+              nsAutoString appName;
+              if (NS_FAILED(regKey->GetValueName(index, appName)))
+                continue;
+              
+              // HKEY_CLASSES_ROOT\Applications\firefox.exe = "path params"
+              nsAutoString appFilesystemCommand;
+              if (!GetAppsVerbCommandHandler(appName, appFilesystemCommand, 
+                                             false) ||
+                  IsPathInList(appFilesystemCommand, trackList))
+                continue;
+              ProcessPath(appList, trackList, appFilesystemCommand);
+            }
+          }
+        }
+      }
+    }
+  } // extKnown == false
+
+
+  // 7) list global HKEY_CLASSES_ROOT\*\OpenWithList
+  // Listing general purpose handlers, not specific to a mime type or file extension
+
+  workingRegistryPath = NS_LITERAL_STRING("*\\OpenWithList");
+
+  rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                    workingRegistryPath,
+                    nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+  if (NS_SUCCEEDED(rv)) {
+    uint32_t count = 0;
+    if (NS_SUCCEEDED(regKey->GetValueCount(&count)) && count > 0) {
+      for (uint32_t index = 0; index < count; index++) {
+        nsAutoString appName;
+        if (NS_FAILED(regKey->GetValueName(index, appName)))
+          continue;
+
+        // HKEY_CLASSES_ROOT\Applications\firefox.exe = "path params"
+        nsAutoString appFilesystemCommand;
+        if (!GetAppsVerbCommandHandler(appName, appFilesystemCommand,
+                                       false) ||
+            IsPathInList(appFilesystemCommand, trackList))
+          continue;
+        ProcessPath(appList, trackList, appFilesystemCommand);
+      }
+    }
+    regKey->Close();
+  }
+
+
+  // 8) General application's list - not file extension specific on windows
+  workingRegistryPath = NS_LITERAL_STRING("Applications");
+
+  rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
+                    workingRegistryPath,
+                    nsIWindowsRegKey::ACCESS_ENUMERATE_SUB_KEYS|
+                    nsIWindowsRegKey::ACCESS_QUERY_VALUE);
+  if (NS_SUCCEEDED(rv)) {
+    uint32_t count = 0;
+    if (NS_SUCCEEDED(regKey->GetChildCount(&count)) && count > 0) {
+      for (uint32_t index = 0; index < count; index++) {
+        nsAutoString appName;
+        if (NS_FAILED(regKey->GetChildName(index, appName)))
+          continue;
+
+        // HKEY_CLASSES_ROOT\Applications\firefox.exe = "path params"
+        nsAutoString appFilesystemCommand;
+        if (!GetAppsVerbCommandHandler(appName, appFilesystemCommand,
+                                       false) ||
+            IsPathInList(appFilesystemCommand, trackList))
+          continue;
+        ProcessPath(appList, trackList, appFilesystemCommand);
+      }
+    }
+  }
+
+  // Return to the caller
+  *_retval = appList;
+  NS_ADDREF(*_retval);
+
+  return NS_OK;
+}