Issue #1258 - Part 1: Import mailnews, ldap, and mork from comm-esr52.9.1

1 files changed, 3708 insertions, 0 deletions

diff --git a/mailnews/base/src/nsMsgAccountManager.cpp b/mailnews/base/src/nsMsgAccountManager.cpp
new file mode 100644
index 000000000..5dd3893b6
--- /dev/null
+++ b/mailnews/base/src/nsMsgAccountManager.cpp
@@ -0,0 +1,3708 @@
+/* -*- Mode: C++; tab-width: 4; 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/. */
+
+/*
+ * The account manager service - manages all accounts, servers, and identities
+ */
+
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+// Disable deprecation warnings generated by nsISupportsArray and associated
+// classes.
+#if defined(__GNUC__)
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#elif defined(_MSC_VER)
+#pragma warning (disable : 4996)
+#endif
+#include "nsISupportsArray.h"
+#include "nsIArray.h"
+#include "nsArrayUtils.h"
+#include "nsMsgAccountManager.h"
+#include "nsMsgBaseCID.h"
+#include "nsMsgCompCID.h"
+#include "nsMsgDBCID.h"
+#include "prmem.h"
+#include "prcmon.h"
+#include "prthread.h"
+#include "plstr.h"
+#include "nsStringGlue.h"
+#include "nsUnicharUtils.h"
+#include "nscore.h"
+#include "prprf.h"
+#include "nsIMsgFolderCache.h"
+#include "nsMsgUtils.h"
+#include "nsIFile.h"
+#include "nsIURL.h"
+#include "nsNetCID.h"
+#include "nsIPrefService.h"
+#include "nsIPrefBranch.h"
+#include "nsISmtpService.h"
+#include "nsIMsgBiffManager.h"
+#include "nsIMsgPurgeService.h"
+#include "nsIObserverService.h"
+#include "nsINoIncomingServer.h"
+#include "nsIMsgMailSession.h"
+#include "nsIDirectoryService.h"
+#include "nsAppDirectoryServiceDefs.h"
+#include "nsMailDirServiceDefs.h"
+#include "nsMsgFolderFlags.h"
+#include "nsIRDFService.h"
+#include "nsRDFCID.h"
+#include "nsIMsgFolderNotificationService.h"
+#include "nsIImapIncomingServer.h"
+#include "nsIImapUrl.h"
+#include "nsIMessengerOSIntegration.h"
+#include "nsICategoryManager.h"
+#include "nsISupportsPrimitives.h"
+#include "nsIMsgFilterService.h"
+#include "nsIMsgFilter.h"
+#include "nsIMsgSearchSession.h"
+#include "nsIMsgSearchTerm.h"
+#include "nsIMutableArray.h"
+#include "nsIDBFolderInfo.h"
+#include "nsIMsgHdr.h"
+#include "nsILineInputStream.h"
+#include "nsThreadUtils.h"
+#include "nsNetUtil.h"
+#include "nsIStringBundle.h"
+#include "nsMsgMessageFlags.h"
+#include "nsIMsgFilterList.h"
+#include "nsDirectoryServiceUtils.h"
+#include "mozilla/Services.h"
+#include <algorithm>
+#include "nsIFileStreams.h"
+#include "nsIOutputStream.h"
+#include "nsISafeOutputStream.h"
+
+#define PREF_MAIL_ACCOUNTMANAGER_ACCOUNTS "mail.accountmanager.accounts"
+#define PREF_MAIL_ACCOUNTMANAGER_DEFAULTACCOUNT "mail.accountmanager.defaultaccount"
+#define PREF_MAIL_ACCOUNTMANAGER_LOCALFOLDERSSERVER "mail.accountmanager.localfoldersserver"
+#define PREF_MAIL_SERVER_PREFIX "mail.server."
+#define ACCOUNT_PREFIX "account"
+#define SERVER_PREFIX "server"
+#define ID_PREFIX "id"
+#define ABOUT_TO_GO_OFFLINE_TOPIC "network:offline-about-to-go-offline"
+#define ACCOUNT_DELIMITER ','
+#define APPEND_ACCOUNTS_VERSION_PREF_NAME "append_preconfig_accounts.version"
+#define MAILNEWS_ROOT_PREF "mailnews."
+#define PREF_MAIL_ACCOUNTMANAGER_APPEND_ACCOUNTS "mail.accountmanager.appendaccounts"
+
+static NS_DEFINE_CID(kMsgAccountCID, NS_MSGACCOUNT_CID);
+static NS_DEFINE_CID(kMsgFolderCacheCID, NS_MSGFOLDERCACHE_CID);
+
+#define SEARCH_FOLDER_FLAG "searchFolderFlag"
+#define SEARCH_FOLDER_FLAG_LEN (sizeof(SEARCH_FOLDER_FLAG) - 1)
+
+const char *kSearchFolderUriProp = "searchFolderUri";
+
+bool nsMsgAccountManager::m_haveShutdown = false;
+bool nsMsgAccountManager::m_shutdownInProgress = false;
+
+NS_IMPL_ISUPPORTS(nsMsgAccountManager,
+                              nsIMsgAccountManager,
+                              nsIObserver,
+                              nsISupportsWeakReference,
+                              nsIUrlListener,
+                              nsIFolderListener)
+
+nsMsgAccountManager::nsMsgAccountManager() :
+  m_accountsLoaded(false),
+  m_emptyTrashInProgress(false),
+  m_cleanupInboxInProgress(false),
+  m_userAuthenticated(false),
+  m_loadingVirtualFolders(false),
+  m_virtualFoldersLoaded(false)
+{
+}
+
+nsMsgAccountManager::~nsMsgAccountManager()
+{
+  if(!m_haveShutdown)
+  {
+    Shutdown();
+    //Don't remove from Observer service in Shutdown because Shutdown also gets called
+    //from xpcom shutdown observer.  And we don't want to remove from the service in that case.
+    nsCOMPtr<nsIObserverService> observerService =
+      mozilla::services::GetObserverService();
+    if (observerService)
+    {
+      observerService->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID);
+      observerService->RemoveObserver(this, "quit-application-granted");
+      observerService->RemoveObserver(this, ABOUT_TO_GO_OFFLINE_TOPIC);
+      observerService->RemoveObserver(this, "sleep_notification");
+    }
+  }
+}
+
+nsresult nsMsgAccountManager::Init()
+{
+  nsresult rv;
+
+  m_prefs = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIObserverService> observerService =
+           mozilla::services::GetObserverService();
+  if (observerService)
+  {
+    observerService->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, true);
+    observerService->AddObserver(this, "quit-application-granted" , true);
+    observerService->AddObserver(this, ABOUT_TO_GO_OFFLINE_TOPIC, true);
+    observerService->AddObserver(this, "profile-before-change", true);
+    observerService->AddObserver(this, "sleep_notification", true);
+  }
+
+  // Make sure PSM gets initialized before any accounts use certificates.
+  net_EnsurePSMInit();
+
+  return NS_OK;
+}
+
+nsresult nsMsgAccountManager::Shutdown()
+{
+  if (m_haveShutdown)     // do not shutdown twice
+    return NS_OK;
+
+  nsresult rv;
+
+  SaveVirtualFolders();
+
+  nsCOMPtr<nsIMsgDBService> msgDBService = do_GetService(NS_MSGDB_SERVICE_CONTRACTID, &rv);
+  if (msgDBService)
+  {
+    nsTObserverArray<RefPtr<VirtualFolderChangeListener> >::ForwardIterator iter(m_virtualFolderListeners);
+    RefPtr<VirtualFolderChangeListener> listener;
+
+    while (iter.HasMore())
+    {
+      listener = iter.GetNext();
+      msgDBService->UnregisterPendingListener(listener);
+    }
+  }
+  if(m_msgFolderCache)
+    WriteToFolderCache(m_msgFolderCache);
+  (void)ShutdownServers();
+  (void)UnloadAccounts();
+
+  //shutdown removes nsIIncomingServer listener from biff manager, so do it after accounts have been unloaded
+  nsCOMPtr<nsIMsgBiffManager> biffService = do_GetService(NS_MSGBIFFMANAGER_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv) && biffService)
+    biffService->Shutdown();
+
+  //shutdown removes nsIIncomingServer listener from purge service, so do it after accounts have been unloaded
+  nsCOMPtr<nsIMsgPurgeService> purgeService = do_GetService(NS_MSGPURGESERVICE_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv) && purgeService)
+    purgeService->Shutdown();
+
+  m_msgFolderCache = nullptr;
+  m_haveShutdown = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetShutdownInProgress(bool *_retval)
+{
+    NS_ENSURE_ARG_POINTER(_retval);
+    *_retval = m_shutdownInProgress;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetUserNeedsToAuthenticate(bool *aRetval)
+{
+  NS_ENSURE_ARG_POINTER(aRetval);
+  if (!m_userAuthenticated)
+    return m_prefs->GetBoolPref("mail.password_protect_local_cache", aRetval);
+  *aRetval = !m_userAuthenticated;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::SetUserNeedsToAuthenticate(bool aUserNeedsToAuthenticate)
+{
+  m_userAuthenticated = !aUserNeedsToAuthenticate;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::Observe(nsISupports *aSubject, const char *aTopic, const char16_t *someData)
+{
+  if(!strcmp(aTopic,NS_XPCOM_SHUTDOWN_OBSERVER_ID))
+  {
+    Shutdown();
+    return NS_OK;
+  }
+  if (!strcmp(aTopic, "quit-application-granted"))
+  {
+    // CleanupOnExit will set m_shutdownInProgress to true.
+    CleanupOnExit();
+    return NS_OK;
+  }
+  if (!strcmp(aTopic, ABOUT_TO_GO_OFFLINE_TOPIC))
+  {
+    nsAutoString dataString(NS_LITERAL_STRING("offline"));
+    if (someData)
+    {
+      nsAutoString someDataString(someData);
+      if (dataString.Equals(someDataString))
+        CloseCachedConnections();
+    }
+    return NS_OK;
+  }
+  if (!strcmp(aTopic, "sleep_notification"))
+    return CloseCachedConnections();
+
+  if (!strcmp(aTopic, "profile-before-change"))
+  {
+    Shutdown();
+    return NS_OK;
+  }
+
+ return NS_OK;
+}
+
+void
+nsMsgAccountManager::getUniqueAccountKey(nsCString& aResult)
+{
+  int32_t lastKey = 0;
+  nsresult rv;
+  nsCOMPtr<nsIPrefService> prefservice(do_GetService(NS_PREFSERVICE_CONTRACTID,
+                                       &rv));
+  if (NS_SUCCEEDED(rv)) {
+    nsCOMPtr<nsIPrefBranch> prefBranch;
+    prefservice->GetBranch("", getter_AddRefs(prefBranch));
+
+    rv = prefBranch->GetIntPref("mail.account.lastKey", &lastKey);
+    if (NS_FAILED(rv) || lastKey == 0) {
+      // If lastKey pref does not contain a valid value, loop over existing
+      // pref names mail.account.* .
+      nsCOMPtr<nsIPrefBranch> prefBranchAccount;
+      rv = prefservice->GetBranch("mail.account.", getter_AddRefs(prefBranchAccount));
+      if (NS_SUCCEEDED(rv)) {
+        uint32_t prefCount;
+        char **prefList;
+        rv = prefBranchAccount->GetChildList("", &prefCount, &prefList);
+        if (NS_SUCCEEDED(rv)) {
+          // Pref names are of the format accountX.
+          // Find the maximum value of 'X' used so far.
+          for (uint32_t i = 0; i < prefCount; i++) {
+            nsCString prefName;
+            prefName.Assign(prefList[i]);
+            if (StringBeginsWith(prefName, NS_LITERAL_CSTRING(ACCOUNT_PREFIX))) {
+              int32_t dotPos = prefName.FindChar('.');
+              if (dotPos != kNotFound) {
+                nsCString keyString(Substring(prefName, strlen(ACCOUNT_PREFIX),
+                                              dotPos - strlen(ACCOUNT_PREFIX)));
+                int32_t thisKey = keyString.ToInteger(&rv);
+                if (NS_SUCCEEDED(rv))
+                  lastKey = std::max(lastKey, thisKey);
+              }
+            }
+          }
+          NS_FREE_XPCOM_ALLOCATED_POINTER_ARRAY(prefCount, prefList);
+        }
+      }
+    }
+
+    // Use next available key and store the value in the pref.
+    aResult.Assign(ACCOUNT_PREFIX);
+    aResult.AppendInt(++lastKey);
+    rv = prefBranch->SetIntPref("mail.account.lastKey", lastKey);
+  } else {
+    // If pref service is not working, try to find a free accountX key
+    // by checking which keys exist.
+    int32_t i = 1;
+    nsCOMPtr<nsIMsgAccount> account;
+
+    do {
+      aResult = ACCOUNT_PREFIX;
+      aResult.AppendInt(i++);
+      GetAccount(aResult, getter_AddRefs(account));
+    } while (account);
+  }
+}
+
+void
+nsMsgAccountManager::GetUniqueServerKey(nsACString& aResult)
+{
+  nsAutoCString prefResult;
+  bool usePrefsScan = true;
+  nsresult rv;
+  nsCOMPtr<nsIPrefService> prefService(do_GetService(NS_PREFSERVICE_CONTRACTID,
+                                       &rv));
+  if (NS_FAILED(rv))
+    usePrefsScan = false;
+
+  // Loop over existing pref names mail.server.server(lastKey).type
+  nsCOMPtr<nsIPrefBranch> prefBranchServer;
+  if (prefService)
+  {
+    rv = prefService->GetBranch(PREF_MAIL_SERVER_PREFIX, getter_AddRefs(prefBranchServer));
+    if (NS_FAILED(rv))
+      usePrefsScan = false;
+  }
+
+  if (usePrefsScan)
+  {
+    nsAutoCString type;
+    nsAutoCString typeKey;
+    for (uint32_t lastKey = 1; ; lastKey++)
+    {
+      aResult.AssignLiteral(SERVER_PREFIX);
+      aResult.AppendInt(lastKey);
+      typeKey.Assign(aResult);
+      typeKey.AppendLiteral(".type");
+      prefBranchServer->GetCharPref(typeKey.get(), getter_Copies(type));
+      if (type.IsEmpty()) // a server slot with no type is considered empty
+        return;
+    }
+  }
+  else
+  {
+    // If pref service fails, try to find a free serverX key
+    // by checking which keys exist.
+    nsAutoCString internalResult;
+    nsCOMPtr<nsIMsgIncomingServer> server;
+    uint32_t i = 1;
+    do {
+      aResult.AssignLiteral(SERVER_PREFIX);
+      aResult.AppendInt(i++);
+      m_incomingServers.Get(aResult, getter_AddRefs(server));
+    } while (server);
+    return;
+  }
+}
+
+nsresult
+nsMsgAccountManager::CreateIdentity(nsIMsgIdentity **_retval)
+{
+  NS_ENSURE_ARG_POINTER(_retval);
+  nsresult rv;
+  nsAutoCString key;
+  nsCOMPtr<nsIMsgIdentity> identity;
+  int32_t i = 1;
+  do {
+    key.AssignLiteral(ID_PREFIX);
+    key.AppendInt(i++);
+    m_identities.Get(key, getter_AddRefs(identity));
+  } while (identity);
+
+  rv = createKeyedIdentity(key, _retval);
+  return rv;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetIdentity(const nsACString& key, nsIMsgIdentity **_retval)
+{
+  NS_ENSURE_ARG_POINTER(_retval);
+  nsresult rv = NS_OK;
+  *_retval = nullptr;
+
+  if (!key.IsEmpty())
+  {
+    nsCOMPtr<nsIMsgIdentity> identity;
+    m_identities.Get(key, getter_AddRefs(identity));
+    if (identity)
+      identity.swap(*_retval);
+    else // identity doesn't exist. create it.
+      rv = createKeyedIdentity(key, _retval);
+  }
+
+  return rv;
+}
+
+/*
+ * the shared identity-creation code
+ * create an identity and add it to the accountmanager's list.
+ */
+nsresult
+nsMsgAccountManager::createKeyedIdentity(const nsACString& key,
+                                         nsIMsgIdentity ** aIdentity)
+{
+  nsresult rv;
+  nsCOMPtr<nsIMsgIdentity> identity =
+      do_CreateInstance(NS_MSGIDENTITY_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  identity->SetKey(key);
+  m_identities.Put(key, identity);
+  identity.swap(*aIdentity);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::CreateIncomingServer(const nsACString&  username,
+                                          const nsACString& hostname,
+                                          const nsACString& type,
+                                          nsIMsgIncomingServer **_retval)
+{
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoCString key;
+  GetUniqueServerKey(key);
+  rv = createKeyedServer(key, username, hostname, type, _retval);
+  if (*_retval)
+  {
+    nsCString defaultStore;
+    m_prefs->GetCharPref("mail.serverDefaultStoreContractID", getter_Copies(defaultStore));
+    (*_retval)->SetCharValue("storeContractID", defaultStore);
+
+    // From when we first create the account until we have created some folders,
+    // we can change the store type.
+    (*_retval)->SetBoolValue("canChangeStoreType", true);
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetIncomingServer(const nsACString& key,
+                                       nsIMsgIncomingServer **_retval)
+{
+  NS_ENSURE_ARG_POINTER(_retval);
+  nsresult rv;
+
+  if (m_incomingServers.Get(key, _retval))
+    return NS_OK;
+
+  // server doesn't exist, so create it
+  // this is really horrible because we are doing our own prefname munging
+  // instead of leaving it up to the incoming server.
+  // this should be fixed somehow so that we can create the incoming server
+  // and then read from the incoming server's attributes
+
+  // in order to create the right kind of server, we have to look
+  // at the pref for this server to get the username, hostname, and type
+  nsAutoCString serverPrefPrefix(PREF_MAIL_SERVER_PREFIX);
+  serverPrefPrefix.Append(key);
+
+  nsCString serverType;
+  nsAutoCString serverPref (serverPrefPrefix);
+  serverPref.AppendLiteral(".type");
+  rv = m_prefs->GetCharPref(serverPref.get(), getter_Copies(serverType));
+  NS_ENSURE_SUCCESS(rv, NS_ERROR_NOT_INITIALIZED);
+
+  //
+  // .userName
+  serverPref = serverPrefPrefix;
+  serverPref.AppendLiteral(".userName");
+  nsCString username;
+  rv = m_prefs->GetCharPref(serverPref.get(), getter_Copies(username));
+
+  // .hostname
+  serverPref = serverPrefPrefix;
+  serverPref.AppendLiteral(".hostname");
+  nsCString hostname;
+  rv = m_prefs->GetCharPref(serverPref.get(), getter_Copies(hostname));
+  NS_ENSURE_SUCCESS(rv, NS_ERROR_NOT_INITIALIZED);
+
+  return createKeyedServer(key, username, hostname, serverType, _retval);
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::RemoveIncomingServer(nsIMsgIncomingServer *aServer,
+                                          bool aRemoveFiles)
+{
+  NS_ENSURE_ARG_POINTER(aServer);
+
+  nsCString serverKey;
+  nsresult rv = aServer->GetKey(serverKey);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  LogoutOfServer(aServer); // close cached connections and forget session password
+
+  // invalidate the FindServer() cache if we are removing the cached server
+  if (m_lastFindServerResult == aServer)
+    SetLastServerFound(nullptr, EmptyCString(), EmptyCString(), 0, EmptyCString());
+
+  m_incomingServers.Remove(serverKey);
+
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  nsCOMPtr<nsIArray> allDescendants;
+
+  rv = aServer->GetRootFolder(getter_AddRefs(rootFolder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = rootFolder->GetDescendants(getter_AddRefs(allDescendants));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  uint32_t cnt = 0;
+  rv = allDescendants->GetLength(&cnt);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMsgFolderNotificationService> notifier =
+           do_GetService(NS_MSGNOTIFICATIONSERVICE_CONTRACTID);
+  nsCOMPtr<nsIFolderListener> mailSession =
+           do_GetService(NS_MSGMAILSESSION_CONTRACTID);
+
+  for (uint32_t i = 0; i < cnt; i++)
+  {
+    nsCOMPtr<nsIMsgFolder> folder = do_QueryElementAt(allDescendants, i);
+    if (folder)
+    {
+      folder->ForceDBClosed();
+      if (notifier)
+        notifier->NotifyFolderDeleted(folder);
+      if (mailSession)
+      {
+        nsCOMPtr<nsIMsgFolder> parentFolder;
+        folder->GetParent(getter_AddRefs(parentFolder));
+        mailSession->OnItemRemoved(parentFolder, folder);
+      }
+    }
+  }
+  if (notifier)
+    notifier->NotifyFolderDeleted(rootFolder);
+  if (mailSession)
+    mailSession->OnItemRemoved(nullptr, rootFolder);
+
+  removeListenersFromFolder(rootFolder);
+  NotifyServerUnloaded(aServer);
+  if (aRemoveFiles)
+  {
+    rv = aServer->RemoveFiles();
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  // now clear out the server once and for all.
+  // watch out! could be scary
+  aServer->ClearAllValues();
+  rootFolder->Shutdown(true);
+  return rv;
+}
+
+/*
+ * create a server when you know the key and the type
+ */
+nsresult
+nsMsgAccountManager::createKeyedServer(const nsACString& key,
+                                       const nsACString& username,
+                                       const nsACString& hostname,
+                                       const nsACString& type,
+                                       nsIMsgIncomingServer ** aServer)
+{
+  nsresult rv;
+  *aServer = nullptr;
+
+  //construct the contractid
+  nsAutoCString serverContractID(NS_MSGINCOMINGSERVER_CONTRACTID_PREFIX);
+  serverContractID += type;
+
+  // finally, create the server
+  // (This will fail if type is from an extension that has been removed)
+  nsCOMPtr<nsIMsgIncomingServer> server =
+           do_CreateInstance(serverContractID.get(), &rv);
+  NS_ENSURE_SUCCESS(rv, NS_ERROR_NOT_AVAILABLE);
+
+  int32_t port;
+  nsCOMPtr <nsIMsgIncomingServer> existingServer;
+  server->SetKey(key);
+  server->SetType(type);
+  server->SetUsername(username);
+  server->SetHostName(hostname);
+  server->GetPort(&port);
+  FindRealServer(username, hostname, type, port, getter_AddRefs(existingServer));
+  // don't allow duplicate servers.
+  if (existingServer)
+    return NS_ERROR_FAILURE;
+
+  m_incomingServers.Put(key, server);
+
+  // now add all listeners that are supposed to be
+  // waiting on root folders
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  rv = server->GetRootFolder(getter_AddRefs(rootFolder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsTObserverArray<nsCOMPtr<nsIFolderListener> >::ForwardIterator iter(mFolderListeners);
+  while (iter.HasMore())
+  {
+    rootFolder->AddFolderListener(iter.GetNext());
+  }
+
+  server.swap(*aServer);
+  return NS_OK;
+}
+
+void
+nsMsgAccountManager::removeListenersFromFolder(nsIMsgFolder *aFolder)
+{
+  nsTObserverArray<nsCOMPtr<nsIFolderListener> >::ForwardIterator iter(mFolderListeners);
+  while (iter.HasMore())
+  {
+    aFolder->RemoveFolderListener(iter.GetNext());
+  }
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::RemoveAccount(nsIMsgAccount *aAccount,
+                                   bool aRemoveFiles = false)
+{
+  NS_ENSURE_ARG_POINTER(aAccount);
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool accountRemoved = m_accounts.RemoveElement(aAccount);
+
+  rv  = OutputAccountsPref();
+  // If we couldn't write out the pref, restore the account.
+  if (NS_FAILED(rv) && accountRemoved)
+  {
+    m_accounts.AppendElement(aAccount);
+    return rv;
+  }
+
+  // if it's the default, clear the default account
+  if (m_defaultAccount.get() == aAccount)
+    SetDefaultAccount(nullptr);
+
+  // XXX - need to figure out if this is the last time this server is
+  // being used, and only send notification then.
+  // (and only remove from hashtable then too!)
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  rv = aAccount->GetIncomingServer(getter_AddRefs(server));
+  if (NS_SUCCEEDED(rv) && server)
+    RemoveIncomingServer(server, aRemoveFiles);
+
+  nsCOMPtr<nsIArray> identityArray;
+  rv = aAccount->GetIdentities(getter_AddRefs(identityArray));
+  if (NS_SUCCEEDED(rv)) {
+    uint32_t count = 0;
+    identityArray->GetLength(&count);
+    uint32_t i;
+    for (i = 0; i < count; i++)
+    {
+      nsCOMPtr<nsIMsgIdentity> identity( do_QueryElementAt(identityArray, i, &rv));
+      bool identityStillUsed = false;
+      // for each identity, see if any existing account still uses it,
+      // and if not, clear it.
+      // Note that we are also searching here accounts with missing servers from
+      //  unloaded extension types.
+      if (NS_SUCCEEDED(rv))
+      {
+        uint32_t index;
+        for (index = 0; index < m_accounts.Length() && !identityStillUsed; index++)
+        {
+          nsCOMPtr<nsIArray> existingIdentitiesArray;
+
+          rv = m_accounts[index]->GetIdentities(getter_AddRefs(existingIdentitiesArray));
+          uint32_t pos;
+          if (NS_SUCCEEDED(existingIdentitiesArray->IndexOf(0, identity, &pos)))
+          {
+            identityStillUsed = true;
+            break;
+          }
+        }
+      }
+      // clear out all identity information if no other account uses it.
+      if (!identityStillUsed)
+        identity->ClearAllValues();
+    }
+  }
+
+  // It is not a critical problem if this fails as the account was already
+  // removed from the list of accounts so should not ever be referenced.
+  // Just print it out for debugging.
+  rv = aAccount->ClearAllValues();
+  NS_ASSERTION(NS_SUCCEEDED(rv), "removing of account prefs failed");
+  return NS_OK;
+}
+
+nsresult
+nsMsgAccountManager::OutputAccountsPref()
+{
+  nsCString accountKey;
+  mAccountKeyList.Truncate();
+
+  for (uint32_t index = 0; index < m_accounts.Length(); index++)
+  {
+    m_accounts[index]->GetKey(accountKey);
+    if (index)
+      mAccountKeyList.Append(ACCOUNT_DELIMITER);
+    mAccountKeyList.Append(accountKey);
+  }
+  return m_prefs->SetCharPref(PREF_MAIL_ACCOUNTMANAGER_ACCOUNTS,
+                                mAccountKeyList.get());
+}
+
+/* get the default account. If no default account, pick the first account */
+NS_IMETHODIMP
+nsMsgAccountManager::GetDefaultAccount(nsIMsgAccount **aDefaultAccount)
+{
+  NS_ENSURE_ARG_POINTER(aDefaultAccount);
+
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (!m_defaultAccount) {
+    uint32_t count = m_accounts.Length();
+    if (!count) {
+      *aDefaultAccount = nullptr;
+      return NS_ERROR_FAILURE;
+    }
+
+    nsCString defaultKey;
+    rv = m_prefs->GetCharPref(PREF_MAIL_ACCOUNTMANAGER_DEFAULTACCOUNT, getter_Copies(defaultKey));
+
+    if (NS_SUCCEEDED(rv))
+      rv = GetAccount(defaultKey, getter_AddRefs(m_defaultAccount));
+
+    if (NS_FAILED(rv) || !m_defaultAccount) {
+      nsCOMPtr<nsIMsgAccount> firstAccount;
+      uint32_t index;
+      bool foundValidDefaultAccount = false;
+      for (index = 0; index < count; index++) {
+        nsCOMPtr<nsIMsgAccount> account(m_accounts[index]);
+
+        // get incoming server
+        nsCOMPtr <nsIMsgIncomingServer> server;
+        // server could be null if created by an unloaded extension
+        (void) account->GetIncomingServer(getter_AddRefs(server));
+
+        bool canBeDefaultServer = false;
+        if (server)
+        {
+          server->GetCanBeDefaultServer(&canBeDefaultServer);
+          if (!firstAccount)
+            firstAccount = account;
+        }
+
+        // if this can serve as default server, set it as default and
+        // break out of the loop.
+        if (canBeDefaultServer) {
+          SetDefaultAccount(account);
+          foundValidDefaultAccount = true;
+          break;
+        }
+      }
+
+      if (!foundValidDefaultAccount) {
+        // Get the first account and use it.
+        // We need to fix this scenario, e.g. in bug 342632.
+        NS_WARNING("No valid default account found.");
+        if (firstAccount) {
+          NS_WARNING("Just using the first one (FIXME).");
+          SetDefaultAccount(firstAccount);
+        }
+      }
+    }
+  }
+
+  if (!m_defaultAccount) {
+    // Absolutely no usable account found. Error out.
+    NS_ERROR("Default account is null, when not expected!");
+    *aDefaultAccount = nullptr;
+    return NS_ERROR_FAILURE;
+  }
+  NS_ADDREF(*aDefaultAccount = m_defaultAccount);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::SetDefaultAccount(nsIMsgAccount *aDefaultAccount)
+{
+  if (m_defaultAccount != aDefaultAccount)
+  {
+    nsCOMPtr<nsIMsgAccount> oldAccount = m_defaultAccount;
+    m_defaultAccount = aDefaultAccount;
+    (void) setDefaultAccountPref(aDefaultAccount);
+    (void) notifyDefaultServerChange(oldAccount, aDefaultAccount);
+  }
+  return NS_OK;
+}
+
+// fire notifications
+nsresult
+nsMsgAccountManager::notifyDefaultServerChange(nsIMsgAccount *aOldAccount,
+                                               nsIMsgAccount *aNewAccount)
+{
+  nsresult rv;
+
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+
+  // first tell old server it's no longer the default
+  if (aOldAccount) {
+    rv = aOldAccount->GetIncomingServer(getter_AddRefs(server));
+    if (NS_SUCCEEDED(rv) && server) {
+      rv = server->GetRootFolder(getter_AddRefs(rootFolder));
+      if (NS_SUCCEEDED(rv) && rootFolder)
+        rootFolder->NotifyBoolPropertyChanged(kDefaultServerAtom,
+                                              true, false);
+    }
+  }
+
+    // now tell new server it is.
+  if (aNewAccount) {
+    rv = aNewAccount->GetIncomingServer(getter_AddRefs(server));
+    if (NS_SUCCEEDED(rv) && server) {
+      rv = server->GetRootFolder(getter_AddRefs(rootFolder));
+      if (NS_SUCCEEDED(rv) && rootFolder)
+        rootFolder->NotifyBoolPropertyChanged(kDefaultServerAtom,
+                                              false, true);
+    }
+  }
+
+  if (aOldAccount && aNewAccount)  //only notify if the user goes and changes default account
+  {
+    nsCOMPtr<nsIObserverService> observerService =
+      mozilla::services::GetObserverService();
+
+    if (observerService)
+      observerService->NotifyObservers(nullptr,"mailDefaultAccountChanged",nullptr);
+  }
+
+  return NS_OK;
+}
+
+nsresult
+nsMsgAccountManager::setDefaultAccountPref(nsIMsgAccount* aDefaultAccount)
+{
+  nsresult rv;
+
+  if (aDefaultAccount) {
+    nsCString key;
+    rv = aDefaultAccount->GetKey(key);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = m_prefs->SetCharPref(PREF_MAIL_ACCOUNTMANAGER_DEFAULTACCOUNT, key.get());
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+  else
+    m_prefs->ClearUserPref(PREF_MAIL_ACCOUNTMANAGER_DEFAULTACCOUNT);
+
+  return NS_OK;
+}
+
+void nsMsgAccountManager::LogoutOfServer(nsIMsgIncomingServer *aServer)
+{
+  if (!aServer)
+    return;
+  mozilla::DebugOnly<nsresult> rv = aServer->Shutdown();
+  NS_ASSERTION(NS_SUCCEEDED(rv), "Shutdown of server failed");
+  rv = aServer->ForgetSessionPassword();
+  NS_ASSERTION(NS_SUCCEEDED(rv), "failed to remove the password associated with server");
+}
+
+NS_IMETHODIMP nsMsgAccountManager::GetFolderCache(nsIMsgFolderCache* *aFolderCache)
+{
+  NS_ENSURE_ARG_POINTER(aFolderCache);
+  nsresult rv = NS_OK;
+
+  if (!m_msgFolderCache)
+  {
+    m_msgFolderCache = do_CreateInstance(kMsgFolderCacheCID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIFile> cacheFile;
+    rv = NS_GetSpecialDirectory(NS_APP_MESSENGER_FOLDER_CACHE_50_FILE,
+                                getter_AddRefs(cacheFile));
+    NS_ENSURE_SUCCESS(rv, rv);
+    m_msgFolderCache->Init(cacheFile);
+  }
+
+  NS_IF_ADDREF(*aFolderCache = m_msgFolderCache);
+  return rv;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetAccounts(nsIArray **_retval)
+{
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMutableArray> accounts(do_CreateInstance(NS_ARRAY_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  for (uint32_t index = 0; index < m_accounts.Length(); index++)
+  {
+    nsCOMPtr<nsIMsgAccount> existingAccount(m_accounts[index]);
+    nsCOMPtr<nsIMsgIncomingServer> server;
+    existingAccount->GetIncomingServer(getter_AddRefs(server));
+    if (!server)
+      continue;
+    if (server)
+    {
+      bool hidden = false;
+      server->GetHidden(&hidden);
+      if (hidden)
+        continue;
+    }
+    accounts->AppendElement(existingAccount, false);
+  }
+  NS_IF_ADDREF(*_retval = accounts);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetAllIdentities(nsIArray **_retval)
+{
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMutableArray> result(do_CreateInstance(NS_ARRAY_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIArray> identities;
+
+  for (uint32_t i = 0; i < m_accounts.Length(); ++i) {
+    rv = m_accounts[i]->GetIdentities(getter_AddRefs(identities));
+    if (NS_FAILED(rv))
+      continue;
+
+    uint32_t idCount;
+    rv = identities->GetLength(&idCount);
+    if (NS_FAILED(rv))
+      continue;
+
+    for (uint32_t j = 0; j < idCount; ++j) {
+      nsCOMPtr<nsIMsgIdentity> identity(do_QueryElementAt(identities, j, &rv));
+      if (NS_FAILED(rv))
+        continue;
+
+      nsAutoCString key;
+      rv = identity->GetKey(key);
+      if (NS_FAILED(rv))
+        continue;
+
+      uint32_t resultCount;
+      rv = result->GetLength(&resultCount);
+      if (NS_FAILED(rv))
+        continue;
+
+      bool found = false;
+      for (uint32_t k = 0; k < resultCount && !found; ++k) {
+        nsCOMPtr<nsIMsgIdentity> thisIdentity(do_QueryElementAt(result, k, &rv));
+        if (NS_FAILED(rv))
+          continue;
+
+        nsAutoCString thisKey;
+        rv = thisIdentity->GetKey(thisKey);
+        if (NS_FAILED(rv))
+          continue;
+
+        if (key == thisKey)
+          found = true;
+      }
+
+      if (!found)
+        result->AppendElement(identity, false);
+    }
+  }
+  result.forget(_retval);
+  return rv;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetAllServers(nsIArray **_retval)
+{
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMutableArray> servers(do_CreateInstance(NS_ARRAY_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();
+    if (!server)
+      continue;
+
+    bool hidden = false;
+    server->GetHidden(&hidden);
+    if (hidden)
+      continue;
+
+    nsCString type;
+    if (NS_FAILED(server->GetType(type))) {
+      NS_WARNING("server->GetType() failed");
+      continue;
+    }
+
+    if (!type.EqualsLiteral("im")) {
+      servers->AppendElement(server, false);
+    }
+  }
+
+  servers.forget(_retval);
+  return rv;
+}
+
+nsresult
+nsMsgAccountManager::LoadAccounts()
+{
+  nsresult rv;
+
+  // for now safeguard multiple calls to this function
+  if (m_accountsLoaded)
+    return NS_OK;
+
+  nsCOMPtr<nsIMsgMailSession> mailSession = do_GetService(NS_MSGMAILSESSION_CONTRACTID, &rv);
+
+  if (NS_SUCCEEDED(rv))
+    mailSession->AddFolderListener(this, nsIFolderListener::added |
+                                         nsIFolderListener::removed |
+                                         nsIFolderListener::intPropertyChanged);
+  // If we have code trying to do things after we've unloaded accounts,
+  // ignore it.
+  if (m_shutdownInProgress || m_haveShutdown)
+    return NS_ERROR_FAILURE;
+
+  kDefaultServerAtom = MsgGetAtom("DefaultServer");
+  mFolderFlagAtom = MsgGetAtom("FolderFlag");
+
+  //Ensure biff service has started
+  nsCOMPtr<nsIMsgBiffManager> biffService =
+           do_GetService(NS_MSGBIFFMANAGER_CONTRACTID, &rv);
+
+  if (NS_SUCCEEDED(rv))
+    biffService->Init();
+
+  //Ensure purge service has started
+  nsCOMPtr<nsIMsgPurgeService> purgeService =
+           do_GetService(NS_MSGPURGESERVICE_CONTRACTID, &rv);
+
+  if (NS_SUCCEEDED(rv))
+    purgeService->Init();
+
+  nsCOMPtr<nsIPrefService> prefservice(do_GetService(NS_PREFSERVICE_CONTRACTID,
+                                       &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Ensure messenger OS integration service has started
+  // note, you can't expect the integrationService to be there
+  // we don't have OS integration on all platforms.
+  nsCOMPtr<nsIMessengerOSIntegration> integrationService =
+           do_GetService(NS_MESSENGEROSINTEGRATION_CONTRACTID, &rv);
+
+  // mail.accountmanager.accounts is the main entry point for all accounts
+  nsCString accountList;
+  rv = m_prefs->GetCharPref(PREF_MAIL_ACCOUNTMANAGER_ACCOUNTS, getter_Copies(accountList));
+
+  /**
+   * Check to see if we need to add pre-configured accounts.
+   * Following prefs are important to note in understanding the procedure here.
+   *
+   * 1. pref("mailnews.append_preconfig_accounts.version", version number);
+   * This pref registers the current version in the user prefs file. A default value
+   * is stored in mailnews.js file. If a given vendor needs to add more preconfigured
+   * accounts, the default version number can be increased. Comparing version
+   * number from user's prefs file and the default one from mailnews.js, we
+   * can add new accounts and any other version level changes that need to be done.
+   *
+   * 2. pref("mail.accountmanager.appendaccounts", <comma separated account list>);
+   * This pref contains the list of pre-configured accounts that ISP/Vendor wants to
+   * to add to the existing accounts list.
+   */
+  nsCOMPtr<nsIPrefBranch> defaultsPrefBranch;
+  rv = prefservice->GetDefaultBranch(MAILNEWS_ROOT_PREF, getter_AddRefs(defaultsPrefBranch));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIPrefBranch> prefBranch;
+  rv = prefservice->GetBranch(MAILNEWS_ROOT_PREF, getter_AddRefs(prefBranch));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  int32_t appendAccountsCurrentVersion=0;
+  int32_t appendAccountsDefaultVersion=0;
+  rv = prefBranch->GetIntPref(APPEND_ACCOUNTS_VERSION_PREF_NAME, &appendAccountsCurrentVersion);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = defaultsPrefBranch->GetIntPref(APPEND_ACCOUNTS_VERSION_PREF_NAME, &appendAccountsDefaultVersion);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Update the account list if needed
+  if ((appendAccountsCurrentVersion <= appendAccountsDefaultVersion)) {
+
+    // Get a list of pre-configured accounts
+    nsCString appendAccountList;
+    rv = m_prefs->GetCharPref(PREF_MAIL_ACCOUNTMANAGER_APPEND_ACCOUNTS,
+                              getter_Copies(appendAccountList));
+    appendAccountList.StripWhitespace();
+
+    // If there are pre-configured accounts, we need to add them to the
+    // existing list.
+    if (!appendAccountList.IsEmpty())
+    {
+      if (!accountList.IsEmpty())
+      {
+        // Tokenize the data and add each account
+        // in the user's current mailnews account list
+        nsTArray<nsCString> accountsArray;
+        ParseString(accountList, ACCOUNT_DELIMITER, accountsArray);
+        uint32_t i = accountsArray.Length();
+
+        // Append each account in the pre-configured account list
+        ParseString(appendAccountList, ACCOUNT_DELIMITER, accountsArray);
+
+        // Now add each account that does not already appear in the list
+        for (; i < accountsArray.Length(); i++)
+        {
+          if (accountsArray.IndexOf(accountsArray[i]) == i)
+          {
+            accountList.Append(ACCOUNT_DELIMITER);
+            accountList.Append(accountsArray[i]);
+          }
+        }
+      }
+      else
+      {
+        accountList = appendAccountList;
+      }
+      // Increase the version number so that updates will happen as and when needed
+      rv = prefBranch->SetIntPref(APPEND_ACCOUNTS_VERSION_PREF_NAME, appendAccountsCurrentVersion + 1);
+    }
+  }
+
+  // It is ok to return null accounts like when we create new profile.
+  m_accountsLoaded = true;
+  m_haveShutdown = false;
+
+  if (accountList.IsEmpty())
+      return NS_OK;
+
+  /* parse accountList and run loadAccount on each string, comma-separated */
+  nsCOMPtr<nsIMsgAccount> account;
+  // Tokenize the data and add each account
+  // in the user's current mailnews account list
+  nsTArray<nsCString> accountsArray;
+  ParseString(accountList, ACCOUNT_DELIMITER, accountsArray);
+
+  // These are the duplicate accounts we found. We keep track of these
+  // because if any other server defers to one of these accounts, we need
+  // to defer to the correct account.
+  nsCOMArray<nsIMsgAccount> dupAccounts;
+
+  // Now add each account that does not already appear in the list
+  for (uint32_t i = 0; i < accountsArray.Length(); i++)
+  {
+    // if we've already seen this exact account, advance to the next account.
+    // After the loop, we'll notice that we don't have as many actual accounts
+    // as there were accounts in the pref, and rewrite the pref.
+    if (accountsArray.IndexOf(accountsArray[i]) != i)
+      continue;
+
+    // get the "server" pref to see if we already have an account with this
+    // server. If we do, we ignore this account.
+    nsAutoCString serverKeyPref("mail.account.");
+    serverKeyPref += accountsArray[i];
+
+    nsCOMPtr<nsIPrefBranch> accountPrefBranch;
+    rv = prefservice->GetBranch(serverKeyPref.get(),
+                                getter_AddRefs(accountPrefBranch));
+    NS_ENSURE_SUCCESS(rv,rv);
+
+    serverKeyPref += ".server";
+    nsCString serverKey;
+    rv = m_prefs->GetCharPref(serverKeyPref.get(), getter_Copies(serverKey));
+    if (NS_FAILED(rv))
+      continue;
+
+    nsCOMPtr<nsIMsgAccount> serverAccount;
+    findAccountByServerKey(serverKey, getter_AddRefs(serverAccount));
+    // If we have an existing account with the same server, ignore this account
+    if (serverAccount)
+      continue;
+
+    if (NS_FAILED(createKeyedAccount(accountsArray[i],
+                                     getter_AddRefs(account))) || !account)
+    {
+      NS_WARNING("unexpected entry in account list; prefs corrupt?");
+      continue;
+    }
+
+    // See nsIMsgAccount.idl for a description of the secondsToLeaveUnavailable
+    //  and timeFoundUnavailable preferences
+    nsAutoCString toLeavePref(PREF_MAIL_SERVER_PREFIX);
+    toLeavePref.Append(serverKey);
+    nsAutoCString unavailablePref(toLeavePref); // this is the server-specific prefix
+    unavailablePref.AppendLiteral(".timeFoundUnavailable");
+    toLeavePref.AppendLiteral(".secondsToLeaveUnavailable");
+    int32_t secondsToLeave = 0;
+    int32_t timeUnavailable = 0;
+
+    m_prefs->GetIntPref(toLeavePref.get(), &secondsToLeave);
+
+    // force load of accounts (need to find a better way to do this)
+    nsCOMPtr<nsIArray> identities;
+    account->GetIdentities(getter_AddRefs(identities));
+
+    rv = account->CreateServer();
+    bool deleteAccount = NS_FAILED(rv);
+
+    if (secondsToLeave)
+    { // we need to process timeUnavailable
+      if (NS_SUCCEEDED(rv)) // clear the time if server is available
+      {
+        m_prefs->ClearUserPref(unavailablePref.get());
+      }
+      // NS_ERROR_NOT_AVAILABLE signifies a server that could not be
+      // instantiated, presumably because of an invalid type.
+      else if (rv == NS_ERROR_NOT_AVAILABLE)
+      {
+        m_prefs->GetIntPref(unavailablePref.get(), &timeUnavailable);
+        if (!timeUnavailable)
+        { // we need to set it, this must be the first time unavailable
+          uint32_t nowSeconds;
+          PRTime2Seconds(PR_Now(), &nowSeconds);
+          m_prefs->SetIntPref(unavailablePref.get(), nowSeconds);
+          deleteAccount = false;
+        }
+      }
+    }
+
+    if (rv == NS_ERROR_NOT_AVAILABLE && timeUnavailable != 0)
+    { // Our server is still unavailable. Have we timed out yet?
+      uint32_t nowSeconds;
+      PRTime2Seconds(PR_Now(), &nowSeconds);
+      if ((int32_t)nowSeconds < timeUnavailable + secondsToLeave)
+        deleteAccount = false;
+    }
+
+    if (deleteAccount)
+    {
+      dupAccounts.AppendObject(account);
+      m_accounts.RemoveElement(account);
+    }
+  }
+
+  // Check if we removed one or more of the accounts in the pref string.
+  // If so, rewrite the pref string.
+  if (accountsArray.Length() != m_accounts.Length())
+    OutputAccountsPref();
+
+  int32_t cnt = dupAccounts.Count();
+  nsCOMPtr<nsIMsgAccount> dupAccount;
+
+  // Go through the accounts seeing if any existing server is deferred to
+  // an account we removed. If so, fix the deferral. Then clean up the prefs
+  // for the removed account.
+  for (int32_t i = 0; i < cnt; i++)
+  {
+    dupAccount = dupAccounts[i];
+    for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+      /*
+       * This loop gets run for every incoming server, and is passed a
+       * duplicate account. It checks that the server is not deferred to the
+       * duplicate account. If it is, then it looks up the information for the
+       * duplicate account's server (username, hostName, type), and finds an
+       * account with a server with the same username, hostname, and type, and
+       * if it finds one, defers to that account instead. Generally, this will
+       * be a Local Folders account, since 2.0 has a bug where duplicate Local
+       * Folders accounts are created.
+       */
+      nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();    // njn: rename
+      nsCString type;
+      server->GetType(type);
+      if (type.EqualsLiteral("pop3"))
+      {
+        nsCString deferredToAccount;
+        // Get the pref directly, because the GetDeferredToAccount accessor
+        // attempts to fix broken deferrals, but we know more about what the
+        // deferred to account was.
+        server->GetCharValue("deferred_to_account", deferredToAccount);
+        if (!deferredToAccount.IsEmpty())
+        {
+          nsCString dupAccountKey;
+          dupAccount->GetKey(dupAccountKey);
+          if (deferredToAccount.Equals(dupAccountKey))
+          {
+            nsresult rv;
+            nsCString accountPref("mail.account.");
+            nsCString dupAccountServerKey;
+            accountPref.Append(dupAccountKey);
+            accountPref.Append(".server");
+            nsCOMPtr<nsIPrefService> prefservice(
+              do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
+            if (NS_FAILED(rv)) {
+              continue;
+            }
+            nsCOMPtr<nsIPrefBranch> prefBranch(
+              do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
+            if (NS_FAILED(rv)) {
+              continue;
+            }
+            rv = prefBranch->GetCharPref(accountPref.get(),
+                                         getter_Copies(dupAccountServerKey));
+            if (NS_FAILED(rv)) {
+              continue;
+            }
+            nsCOMPtr<nsIPrefBranch> serverPrefBranch;
+            nsCString serverKeyPref(PREF_MAIL_SERVER_PREFIX);
+            serverKeyPref.Append(dupAccountServerKey);
+            serverKeyPref.Append(".");
+            rv = prefservice->GetBranch(serverKeyPref.get(),
+                                        getter_AddRefs(serverPrefBranch));
+            if (NS_FAILED(rv)) {
+              continue;
+            }
+            nsCString userName;
+            nsCString hostName;
+            nsCString type;
+            serverPrefBranch->GetCharPref("userName", getter_Copies(userName));
+            serverPrefBranch->GetCharPref("hostname", getter_Copies(hostName));
+            serverPrefBranch->GetCharPref("type", getter_Copies(type));
+            // Find a server with the same info.
+            nsCOMPtr<nsIMsgAccountManager> accountManager =
+                     do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID, &rv);
+            if (NS_FAILED(rv)) {
+              continue;
+            }
+            nsCOMPtr<nsIMsgIncomingServer> server;
+            accountManager->FindServer(userName, hostName, type,
+                                       getter_AddRefs(server));
+            if (server)
+            {
+              nsCOMPtr<nsIMsgAccount> replacement;
+              accountManager->FindAccountForServer(server,
+                                                   getter_AddRefs(replacement));
+              if (replacement)
+              {
+                nsCString accountKey;
+                replacement->GetKey(accountKey);
+                if (!accountKey.IsEmpty())
+                  server->SetCharValue("deferred_to_account", accountKey);
+              }
+            }
+          }
+        }
+      }
+    }
+
+    nsAutoCString accountKeyPref("mail.account.");
+    nsCString dupAccountKey;
+    dupAccount->GetKey(dupAccountKey);
+    if (dupAccountKey.IsEmpty())
+      continue;
+    accountKeyPref += dupAccountKey;
+
+    nsCOMPtr<nsIPrefBranch> accountPrefBranch;
+    rv = prefservice->GetBranch(accountKeyPref.get(),
+                                getter_AddRefs(accountPrefBranch));
+    if (accountPrefBranch)
+      accountPrefBranch->DeleteBranch("");
+  }
+
+  // Make sure we have an account that points at the local folders server
+  nsCString localFoldersServerKey;
+  rv = m_prefs->GetCharPref(PREF_MAIL_ACCOUNTMANAGER_LOCALFOLDERSSERVER,
+                            getter_Copies(localFoldersServerKey));
+
+  if (!localFoldersServerKey.IsEmpty())
+  {
+    nsCOMPtr<nsIMsgIncomingServer> server;
+    rv = GetIncomingServer(localFoldersServerKey, getter_AddRefs(server));
+    if (server)
+    {
+      nsCOMPtr<nsIMsgAccount> localFoldersAccount;
+      findAccountByServerKey(localFoldersServerKey, getter_AddRefs(localFoldersAccount));
+      // If we don't have an existing account pointing at the local folders
+      // server, we're going to add one.
+      if (!localFoldersAccount)
+      {
+        nsCOMPtr<nsIMsgAccount> account;
+        (void) CreateAccount(getter_AddRefs(account));
+        if (account)
+          account->SetIncomingServer(server);
+      }
+    }
+  }
+  return NS_OK;
+}
+
+// this routine goes through all the identities and makes sure
+// that the special folders for each identity have the
+// correct special folder flags set, e.g, the Sent folder has
+// the sent flag set.
+//
+// it also goes through all the spam settings for each account
+// and makes sure the folder flags are set there, too
+NS_IMETHODIMP
+nsMsgAccountManager::SetSpecialFolders()
+{
+  nsresult rv;
+  nsCOMPtr<nsIRDFService> rdf = do_GetService("@mozilla.org/rdf/rdf-service;1", &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr<nsIArray> identities;
+  GetAllIdentities(getter_AddRefs(identities));
+
+  uint32_t idCount = 0;
+  identities->GetLength(&idCount);
+
+  uint32_t id;
+  nsCString identityKey;
+
+  for (id = 0; id < idCount; id++)
+  {
+    nsCOMPtr<nsIMsgIdentity> thisIdentity(do_QueryElementAt(identities, id, &rv));
+    if (NS_FAILED(rv))
+      continue;
+
+    if (NS_SUCCEEDED(rv) && thisIdentity)
+    {
+      nsCString folderUri;
+      nsCOMPtr<nsIRDFResource> res;
+      nsCOMPtr<nsIMsgFolder> folder;
+      thisIdentity->GetFccFolder(folderUri);
+      if (!folderUri.IsEmpty() && NS_SUCCEEDED(rdf->GetResource(folderUri, getter_AddRefs(res))))
+      {
+        folder = do_QueryInterface(res, &rv);
+        nsCOMPtr <nsIMsgFolder> parent;
+        if (folder && NS_SUCCEEDED(rv))
+        {
+          rv = folder->GetParent(getter_AddRefs(parent));
+          if (NS_SUCCEEDED(rv) && parent)
+            rv = folder->SetFlag(nsMsgFolderFlags::SentMail);
+        }
+      }
+      thisIdentity->GetDraftFolder(folderUri);
+      if (!folderUri.IsEmpty() && NS_SUCCEEDED(rdf->GetResource(folderUri, getter_AddRefs(res))))
+      {
+        folder = do_QueryInterface(res, &rv);
+        nsCOMPtr <nsIMsgFolder> parent;
+        if (folder && NS_SUCCEEDED(rv))
+        {
+          rv = folder->GetParent(getter_AddRefs(parent));
+          if (NS_SUCCEEDED(rv) && parent)
+            rv = folder->SetFlag(nsMsgFolderFlags::Drafts);
+        }
+      }
+      thisIdentity->GetArchiveFolder(folderUri);
+      if (!folderUri.IsEmpty() && NS_SUCCEEDED(rdf->GetResource(folderUri, getter_AddRefs(res))))
+      {
+        folder = do_QueryInterface(res, &rv);
+        nsCOMPtr <nsIMsgFolder> parent;
+        if (folder && NS_SUCCEEDED(rv))
+        {
+          rv = folder->GetParent(getter_AddRefs(parent));
+          if (NS_SUCCEEDED(rv) && parent)
+          {
+            bool archiveEnabled;
+            thisIdentity->GetArchiveEnabled(&archiveEnabled);
+            if (archiveEnabled)
+              rv = folder->SetFlag(nsMsgFolderFlags::Archive);
+            else
+              rv = folder->ClearFlag(nsMsgFolderFlags::Archive);
+          }
+        }
+      }
+      thisIdentity->GetStationeryFolder(folderUri);
+      if (!folderUri.IsEmpty() && NS_SUCCEEDED(rdf->GetResource(folderUri, getter_AddRefs(res))))
+      {
+        folder = do_QueryInterface(res, &rv);
+        if (folder && NS_SUCCEEDED(rv))
+        {
+          nsCOMPtr <nsIMsgFolder> parent;
+          rv = folder->GetParent(getter_AddRefs(parent));
+          if (NS_SUCCEEDED(rv) && parent) // only set flag if folder is real
+            rv = folder->SetFlag(nsMsgFolderFlags::Templates);
+        }
+      }
+    }
+  }
+
+  // XXX todo
+  // get all servers
+  // get all spam settings for each server
+  // set the JUNK folder flag on the spam folders, right?
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::UnloadAccounts()
+{
+  // release the default account
+  kDefaultServerAtom = nullptr;
+  mFolderFlagAtom = nullptr;
+
+  m_defaultAccount=nullptr;
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();
+    if (!server)
+      continue;
+    nsresult rv;
+    NotifyServerUnloaded(server);
+
+    nsCOMPtr<nsIMsgFolder> rootFolder;
+    rv = server->GetRootFolder(getter_AddRefs(rootFolder));
+    if (NS_SUCCEEDED(rv)) {
+      removeListenersFromFolder(rootFolder);
+
+      rootFolder->Shutdown(true);
+    }
+  }
+
+  m_accounts.Clear();          // will release all elements
+  m_identities.Clear();
+  m_incomingServers.Clear();
+  mAccountKeyList.Truncate();
+  SetLastServerFound(nullptr, EmptyCString(), EmptyCString(), 0, EmptyCString());
+
+  if (m_accountsLoaded)
+  {
+    nsCOMPtr<nsIMsgMailSession> mailSession =
+      do_GetService(NS_MSGMAILSESSION_CONTRACTID);
+    if (mailSession)
+      mailSession->RemoveFolderListener(this);
+    m_accountsLoaded = false;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::ShutdownServers()
+{
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();
+    if (server)
+      server->Shutdown();
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::CloseCachedConnections()
+{
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();
+    if (server)
+      server->CloseCachedConnections();
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::CleanupOnExit()
+{
+  // This can get called multiple times, and potentially re-entrantly.
+  // So add some protection against that.
+  if (m_shutdownInProgress)
+    return NS_OK;
+
+  m_shutdownInProgress = true;
+
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();
+
+    bool emptyTrashOnExit = false;
+    bool cleanupInboxOnExit = false;
+    nsresult rv;
+
+    if (WeAreOffline())
+      break;
+
+    if (!server)
+      continue;
+
+    server->GetEmptyTrashOnExit(&emptyTrashOnExit);
+    nsCOMPtr <nsIImapIncomingServer> imapserver = do_QueryInterface(server);
+    if (imapserver)
+    {
+      imapserver->GetCleanupInboxOnExit(&cleanupInboxOnExit);
+      imapserver->SetShuttingDown(true);
+    }
+    if (emptyTrashOnExit || cleanupInboxOnExit)
+    {
+      nsCOMPtr<nsIMsgFolder> root;
+      server->GetRootFolder(getter_AddRefs(root));
+      nsCString type;
+      server->GetType(type);
+      if (root)
+      {
+        nsCOMPtr<nsIMsgFolder> folder;
+        folder = do_QueryInterface(root);
+        if (folder)
+        {
+          nsCString passwd;
+          bool serverRequiresPasswordForAuthentication = true;
+          bool isImap = type.EqualsLiteral("imap");
+          if (isImap)
+          {
+            server->GetServerRequiresPasswordForBiff(&serverRequiresPasswordForAuthentication);
+            server->GetPassword(passwd);
+          }
+          if (!isImap || (isImap && (!serverRequiresPasswordForAuthentication || !passwd.IsEmpty())))
+          {
+            nsCOMPtr<nsIUrlListener> urlListener;
+            nsCOMPtr<nsIMsgAccountManager> accountManager =
+                     do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID, &rv);
+            if (NS_FAILED(rv))
+              continue;
+
+            if (isImap)
+              urlListener = do_QueryInterface(accountManager, &rv);
+
+            if (isImap && cleanupInboxOnExit)
+            {
+              nsCOMPtr<nsISimpleEnumerator> enumerator;
+              rv = folder->GetSubFolders(getter_AddRefs(enumerator));
+              if (NS_SUCCEEDED(rv))
+              {
+                bool hasMore;
+                while (NS_SUCCEEDED(enumerator->HasMoreElements(&hasMore)) &&
+                       hasMore)
+                {
+                  nsCOMPtr<nsISupports> item;
+                  enumerator->GetNext(getter_AddRefs(item));
+
+                  nsCOMPtr<nsIMsgFolder> inboxFolder(do_QueryInterface(item));
+                  if (!inboxFolder)
+                    continue;
+
+                  uint32_t flags;
+                  inboxFolder->GetFlags(&flags);
+                  if (flags & nsMsgFolderFlags::Inbox)
+                  {
+                    rv = inboxFolder->Compact(urlListener, nullptr /* msgwindow */);
+                    if (NS_SUCCEEDED(rv))
+                      accountManager->SetFolderDoingCleanupInbox(inboxFolder);
+                    break;
+                  }
+                }
+              }
+            }
+
+            if (emptyTrashOnExit)
+            {
+              rv = folder->EmptyTrash(nullptr, urlListener);
+              if (isImap && NS_SUCCEEDED(rv))
+                accountManager->SetFolderDoingEmptyTrash(folder);
+            }
+
+            if (isImap && urlListener)
+            {
+              nsCOMPtr<nsIThread> thread(do_GetCurrentThread());
+
+              bool inProgress = false;
+              if (cleanupInboxOnExit)
+              {
+                int32_t loopCount = 0; // used to break out after 5 seconds
+                accountManager->GetCleanupInboxInProgress(&inProgress);
+                while (inProgress && loopCount++ < 5000)
+                {
+                  accountManager->GetCleanupInboxInProgress(&inProgress);
+                  PR_CEnterMonitor(folder);
+                  PR_CWait(folder, PR_MicrosecondsToInterval(1000UL));
+                  PR_CExitMonitor(folder);
+                  NS_ProcessPendingEvents(thread, PR_MicrosecondsToInterval(1000UL));
+                }
+              }
+              if (emptyTrashOnExit)
+              {
+                accountManager->GetEmptyTrashInProgress(&inProgress);
+                int32_t loopCount = 0;
+                while (inProgress && loopCount++ < 5000)
+                {
+                  accountManager->GetEmptyTrashInProgress(&inProgress);
+                  PR_CEnterMonitor(folder);
+                  PR_CWait(folder, PR_MicrosecondsToInterval(1000UL));
+                  PR_CExitMonitor(folder);
+                  NS_ProcessPendingEvents(thread, PR_MicrosecondsToInterval(1000UL));
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  // Try to do this early on in the shutdown process before
+  // necko shuts itself down.
+  CloseCachedConnections();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::WriteToFolderCache(nsIMsgFolderCache *folderCache)
+{
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    iter.Data()->WriteToFolderCache(folderCache);
+  }
+  return folderCache ? folderCache->Close() : NS_ERROR_FAILURE;
+}
+
+nsresult
+nsMsgAccountManager::createKeyedAccount(const nsCString& key,
+                                        nsIMsgAccount ** aAccount)
+{
+
+  nsresult rv;
+  nsCOMPtr<nsIMsgAccount> account = do_CreateInstance(kMsgAccountCID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  account->SetKey(key);
+
+  m_accounts.AppendElement(account);
+
+  // add to string list
+  if (mAccountKeyList.IsEmpty())
+    mAccountKeyList = key;
+  else {
+    mAccountKeyList.Append(',');
+    mAccountKeyList.Append(key);
+  }
+
+  m_prefs->SetCharPref(PREF_MAIL_ACCOUNTMANAGER_ACCOUNTS, mAccountKeyList.get());
+  account.swap(*aAccount);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::CreateAccount(nsIMsgAccount **_retval)
+{
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsAutoCString key;
+  getUniqueAccountKey(key);
+
+  return createKeyedAccount(key, _retval);
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetAccount(const nsACString& aKey, nsIMsgAccount **aAccount)
+{
+  NS_ENSURE_ARG_POINTER(aAccount);
+  *aAccount = nullptr;
+
+  for (uint32_t i = 0; i < m_accounts.Length(); ++i)
+  {
+    nsCOMPtr<nsIMsgAccount> account(m_accounts[i]);
+    nsCString key;
+    account->GetKey(key);
+    if (key.Equals(aKey))
+    {
+      account.swap(*aAccount);
+      break;
+    }
+  }
+
+  // If not found, create on demand.
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::FindServerIndex(nsIMsgIncomingServer* server, int32_t* result)
+{
+  NS_ENSURE_ARG_POINTER(server);
+  NS_ENSURE_ARG_POINTER(result);
+
+  nsCString key;
+  nsresult rv = server->GetKey(key);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // do this by account because the account list is in order
+  uint32_t i;
+  for (i = 0; i < m_accounts.Length(); ++i)
+  {
+    nsCOMPtr<nsIMsgIncomingServer> server;
+    rv = m_accounts[i]->GetIncomingServer(getter_AddRefs(server));
+    if (!server || NS_FAILED(rv))
+      continue;
+
+    nsCString serverKey;
+    rv = server->GetKey(serverKey);
+    if (NS_FAILED(rv))
+      continue;
+
+    // stop when found,
+    // index will be set to the current index
+    if (serverKey.Equals(key))
+      break;
+  }
+
+  // Even if the search failed, we can return index.
+  // This means that all servers not in the array return an index higher
+  // than all "registered" servers.
+  *result = i;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::AddIncomingServerListener(nsIIncomingServerListener *serverListener)
+{
+  m_incomingServerListeners.AppendObject(serverListener);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::RemoveIncomingServerListener(nsIIncomingServerListener *serverListener)
+{
+  m_incomingServerListeners.RemoveObject(serverListener);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::NotifyServerLoaded(nsIMsgIncomingServer *server)
+{
+  int32_t count = m_incomingServerListeners.Count();
+  for(int32_t i = 0; i < count; i++)
+  {
+    nsIIncomingServerListener* listener = m_incomingServerListeners[i];
+    listener->OnServerLoaded(server);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::NotifyServerUnloaded(nsIMsgIncomingServer *server)
+{
+  NS_ENSURE_ARG_POINTER(server);
+
+  int32_t count = m_incomingServerListeners.Count();
+  server->SetFilterList(nullptr); // clear this to cut shutdown leaks. we are always passing valid non-null server here.
+
+  for(int32_t i = 0; i < count; i++)
+  {
+    nsIIncomingServerListener* listener = m_incomingServerListeners[i];
+    listener->OnServerUnloaded(server);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::NotifyServerChanged(nsIMsgIncomingServer *server)
+{
+  int32_t count = m_incomingServerListeners.Count();
+  for(int32_t i = 0; i < count; i++)
+  {
+    nsIIncomingServerListener* listener = m_incomingServerListeners[i];
+    listener->OnServerChanged(server);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::FindServerByURI(nsIURI *aURI, bool aRealFlag,
+                                nsIMsgIncomingServer** aResult)
+{
+  NS_ENSURE_ARG_POINTER(aURI);
+
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Get username and hostname and port so we can get the server
+  nsAutoCString username;
+  nsAutoCString escapedUsername;
+  rv = aURI->GetUserPass(escapedUsername);
+  if (NS_SUCCEEDED(rv) && !escapedUsername.IsEmpty())
+    MsgUnescapeString(escapedUsername, 0,  username);
+
+  nsAutoCString hostname;
+  nsAutoCString escapedHostname;
+  rv = aURI->GetHost(escapedHostname);
+  if (NS_SUCCEEDED(rv) && !escapedHostname.IsEmpty())
+    MsgUnescapeString(escapedHostname, 0, hostname);
+
+  nsAutoCString type;
+  rv = aURI->GetScheme(type);
+  if (NS_SUCCEEDED(rv) && !type.IsEmpty())
+  {
+    // now modify type if pop or news
+    if (type.EqualsLiteral("pop"))
+      type.AssignLiteral("pop3");
+    // we use "nntp" in the server list so translate it here.
+    else if (type.EqualsLiteral("news"))
+      type.AssignLiteral("nntp");
+    // we use "any" as the wildcard type.
+    else if (type.EqualsLiteral("any"))
+      type.Truncate();
+  }
+
+  int32_t port = 0;
+  // check the port of the scheme is not 'none' or blank
+  if (!(type.EqualsLiteral("none") || type.IsEmpty()))
+  {
+    rv = aURI->GetPort(&port);
+    // Set the port to zero if we got a -1 (use default)
+    if (NS_SUCCEEDED(rv) && (port == -1))
+      port = 0;
+  }
+
+  return findServerInternal(username, hostname, type, port, aRealFlag, aResult);
+}
+
+nsresult
+nsMsgAccountManager::findServerInternal(const nsACString& username,
+                                        const nsACString& hostname,
+                                        const nsACString& type,
+                                        int32_t port,
+                                        bool aRealFlag,
+                                        nsIMsgIncomingServer** aResult)
+{
+  // If 'aRealFlag' is set then we want to scan all existing accounts
+  // to make sure there's no duplicate including those whose host and/or
+  // user names have been changed.
+  if (!aRealFlag &&
+      (m_lastFindServerUserName.Equals(username)) &&
+      (m_lastFindServerHostName.Equals(hostname)) &&
+      (m_lastFindServerType.Equals(type)) &&
+      (m_lastFindServerPort == port) &&
+      m_lastFindServerResult)
+  {
+    NS_ADDREF(*aResult = m_lastFindServerResult);
+    return NS_OK;
+  }
+
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    // Find matching server by user+host+type+port.
+    nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();
+
+    if (!server)
+      continue;
+
+    nsresult rv;
+    nsCString thisHostname;
+    if (aRealFlag)
+      rv = server->GetRealHostName(thisHostname);
+    else
+      rv = server->GetHostName(thisHostname);
+    if (NS_FAILED(rv))
+      continue;
+
+    nsCString thisUsername;
+    if (aRealFlag)
+      rv = server->GetRealUsername(thisUsername);
+    else
+      rv = server->GetUsername(thisUsername);
+    if (NS_FAILED(rv))
+      continue;
+
+    nsCString thisType;
+    rv = server->GetType(thisType);
+    if (NS_FAILED(rv))
+      continue;
+
+    int32_t thisPort = -1; // use the default port identifier
+    // Don't try and get a port for the 'none' scheme
+    if (!thisType.EqualsLiteral("none"))
+    {
+      rv = server->GetPort(&thisPort);
+      if (NS_FAILED(rv)) {
+        continue;
+      }
+    }
+
+    // treat "" as a wild card, so if the caller passed in "" for the desired attribute
+    // treat it as a match
+    if ((type.IsEmpty() || thisType.Equals(type)) &&
+        (hostname.IsEmpty() || thisHostname.Equals(hostname, nsCaseInsensitiveCStringComparator())) &&
+        (!(port != 0) || (port == thisPort)) &&
+        (username.IsEmpty() || thisUsername.Equals(username)))
+    {
+      // stop on first find; cache for next time
+      if (!aRealFlag)
+        SetLastServerFound(server, hostname, username, port, type);
+
+      NS_ADDREF(*aResult = server);
+      return NS_OK;
+    }
+  }
+
+  return NS_ERROR_UNEXPECTED;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::FindServer(const nsACString& username,
+                                const nsACString& hostname,
+                                const nsACString& type,
+                                nsIMsgIncomingServer** aResult)
+{
+  return findServerInternal(username, hostname, type, 0, false, aResult);
+}
+
+// Interface called by UI js only (always return true).
+NS_IMETHODIMP
+nsMsgAccountManager::FindRealServer(const nsACString& username,
+                                    const nsACString& hostname,
+                                    const nsACString& type,
+                                    int32_t port,
+                                    nsIMsgIncomingServer** aResult)
+{
+  *aResult = nullptr;
+  findServerInternal(username, hostname, type, port, true, aResult);
+  return NS_OK;
+}
+
+void
+nsMsgAccountManager::findAccountByServerKey(const nsCString &aKey,
+                                            nsIMsgAccount **aResult)
+{
+  *aResult = nullptr;
+
+  for (uint32_t i = 0; i < m_accounts.Length(); ++i)
+  {
+    nsCOMPtr<nsIMsgIncomingServer> server;
+    nsresult rv = m_accounts[i]->GetIncomingServer(getter_AddRefs(server));
+    if (!server || NS_FAILED(rv))
+      continue;
+
+    nsCString key;
+    rv = server->GetKey(key);
+    if (NS_FAILED(rv))
+      continue;
+
+    // if the keys are equal, the servers are equal
+    if (key.Equals(aKey))
+    {
+      NS_ADDREF(*aResult = m_accounts[i]);
+      break; // stop on first found account
+    }
+  }
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::FindAccountForServer(nsIMsgIncomingServer *server,
+                                            nsIMsgAccount **aResult)
+{
+  NS_ENSURE_ARG_POINTER(aResult);
+
+  if (!server)
+  {
+    (*aResult) = nullptr;
+    return NS_OK;
+  }
+
+  nsresult rv;
+
+  nsCString key;
+  rv = server->GetKey(key);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  findAccountByServerKey(key, aResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetFirstIdentityForServer(nsIMsgIncomingServer *aServer, nsIMsgIdentity **aIdentity)
+{
+  NS_ENSURE_ARG_POINTER(aServer);
+  NS_ENSURE_ARG_POINTER(aIdentity);
+
+  nsCOMPtr<nsIArray> identities;
+  nsresult rv = GetIdentitiesForServer(aServer, getter_AddRefs(identities));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // not all servers have identities
+  // for example, Local Folders
+  uint32_t numIdentities;
+  rv = identities->GetLength(&numIdentities);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (numIdentities > 0)
+  {
+    nsCOMPtr<nsIMsgIdentity> identity(do_QueryElementAt(identities, 0, &rv));
+    NS_ENSURE_SUCCESS(rv, rv);
+    identity.swap(*aIdentity);
+  }
+  else
+    *aIdentity = nullptr;
+  return rv;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetIdentitiesForServer(nsIMsgIncomingServer *server,
+                                            nsIArray **_retval)
+{
+  NS_ENSURE_ARG_POINTER(server);
+  NS_ENSURE_ARG_POINTER(_retval);
+  nsresult rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMutableArray> identities(do_CreateInstance(NS_ARRAY_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoCString serverKey;
+  rv = server->GetKey(serverKey);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  for (uint32_t i = 0; i < m_accounts.Length(); ++i)
+  {
+    nsCOMPtr<nsIMsgAccount> account(m_accounts[i]);
+
+    nsCOMPtr<nsIMsgIncomingServer> thisServer;
+    rv = account->GetIncomingServer(getter_AddRefs(thisServer));
+    if (NS_FAILED(rv) || !thisServer)
+      continue;
+
+    nsAutoCString thisServerKey;
+    rv = thisServer->GetKey(thisServerKey);
+    if (serverKey.Equals(thisServerKey))
+    {
+      nsCOMPtr<nsIArray> theseIdentities;
+      rv = account->GetIdentities(getter_AddRefs(theseIdentities));
+      if (NS_SUCCEEDED(rv))
+      {
+        uint32_t theseLength;
+        rv = theseIdentities->GetLength(&theseLength);
+        if (NS_SUCCEEDED(rv))
+        {
+          for (uint32_t j = 0; j < theseLength; ++j)
+          {
+            nsCOMPtr<nsISupports> id(do_QueryElementAt(theseIdentities, j, &rv));
+            if (NS_SUCCEEDED(rv))
+              identities->AppendElement(id, false);
+          }
+        }
+      }
+    }
+  }
+
+  identities.forget(_retval);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetServersForIdentity(nsIMsgIdentity *aIdentity,
+                                           nsIArray **_retval)
+{
+  NS_ENSURE_ARG_POINTER(aIdentity);
+
+  nsresult rv;
+  rv = LoadAccounts();
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMutableArray> servers(do_CreateInstance(NS_ARRAY_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  for (uint32_t i = 0; i < m_accounts.Length(); ++i)
+  {
+    nsCOMPtr<nsIArray> identities;
+    if (NS_FAILED(m_accounts[i]->GetIdentities(getter_AddRefs(identities))))
+      continue;
+
+    uint32_t idCount = 0;
+    if (NS_FAILED(identities->GetLength(&idCount)))
+      continue;
+
+    uint32_t id;
+    nsCString identityKey;
+    rv = aIdentity->GetKey(identityKey);
+    for (id = 0; id < idCount; id++)
+    {
+      nsCOMPtr<nsIMsgIdentity> thisIdentity(do_QueryElementAt(identities, id, &rv));
+      if (NS_SUCCEEDED(rv))
+      {
+        nsCString thisIdentityKey;
+        rv = thisIdentity->GetKey(thisIdentityKey);
+
+        if (NS_SUCCEEDED(rv) && identityKey.Equals(thisIdentityKey))
+        {
+          nsCOMPtr<nsIMsgIncomingServer> thisServer;
+          rv = m_accounts[i]->GetIncomingServer(getter_AddRefs(thisServer));
+          if (thisServer && NS_SUCCEEDED(rv))
+          {
+            servers->AppendElement(thisServer, false);
+            break;
+          }
+        }
+      }
+    }
+  }
+  servers.forget(_retval);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::AddRootFolderListener(nsIFolderListener *aListener)
+{
+  NS_ENSURE_TRUE(aListener, NS_OK);
+  mFolderListeners.AppendElement(aListener);
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgFolder> rootFolder;
+    nsresult rv = iter.Data()->GetRootFolder(getter_AddRefs(rootFolder));
+    if (NS_FAILED(rv)) {
+      continue;
+    }
+    rv = rootFolder->AddFolderListener(aListener);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::RemoveRootFolderListener(nsIFolderListener *aListener)
+{
+  NS_ENSURE_TRUE(aListener, NS_OK);
+  mFolderListeners.RemoveElement(aListener);
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgFolder> rootFolder;
+    nsresult rv = iter.Data()->GetRootFolder(getter_AddRefs(rootFolder));
+    if (NS_FAILED(rv)) {
+      continue;
+    }
+    rv = rootFolder->RemoveFolderListener(aListener);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::SetLocalFoldersServer(nsIMsgIncomingServer *aServer)
+{
+  NS_ENSURE_ARG_POINTER(aServer);
+  nsCString key;
+  nsresult rv = aServer->GetKey(key);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return m_prefs->SetCharPref(PREF_MAIL_ACCOUNTMANAGER_LOCALFOLDERSSERVER, key.get());
+}
+
+NS_IMETHODIMP nsMsgAccountManager::GetLocalFoldersServer(nsIMsgIncomingServer **aServer)
+{
+  NS_ENSURE_ARG_POINTER(aServer);
+
+  nsCString serverKey;
+
+  nsresult rv = m_prefs->GetCharPref(PREF_MAIL_ACCOUNTMANAGER_LOCALFOLDERSSERVER, getter_Copies(serverKey));
+
+  if (NS_SUCCEEDED(rv) && !serverKey.IsEmpty())
+  {
+    rv = GetIncomingServer(serverKey, aServer);
+    if (NS_SUCCEEDED(rv))
+      return rv;
+    // otherwise, we're going to fall through to looking for an existing local
+    // folders account, because now we fail creating one if one already exists.
+  }
+
+  // try ("nobody","Local Folders","none"), and work down to any "none" server.
+  rv = FindServer(NS_LITERAL_CSTRING("nobody"), NS_LITERAL_CSTRING("Local Folders"),
+                  NS_LITERAL_CSTRING("none"), aServer);
+  if (NS_FAILED(rv) || !*aServer)
+  {
+      rv = FindServer(NS_LITERAL_CSTRING("nobody"), EmptyCString(), NS_LITERAL_CSTRING("none"), aServer);
+      if (NS_FAILED(rv) || !*aServer)
+      {
+          rv = FindServer(EmptyCString(), NS_LITERAL_CSTRING("Local Folders"),
+                          NS_LITERAL_CSTRING("none"), aServer);
+          if (NS_FAILED(rv) || !*aServer)
+              rv = FindServer(EmptyCString(), EmptyCString(), NS_LITERAL_CSTRING("none"), aServer);
+      }
+  }
+
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (!*aServer)
+    return NS_ERROR_FAILURE;
+
+  // we don't want the Smart Mailboxes server to be the local server.
+  bool hidden;
+  (*aServer)->GetHidden(&hidden);
+  if (hidden)
+    return NS_ERROR_FAILURE;
+
+  rv = SetLocalFoldersServer(*aServer);
+  return rv;
+}
+
+nsresult nsMsgAccountManager::GetLocalFoldersPrettyName(nsString &localFoldersName)
+{
+  // we don't want "nobody at Local Folders" to show up in the
+  // folder pane, so we set the pretty name to a localized "Local Folders"
+  nsCOMPtr<nsIStringBundle> bundle;
+  nsresult rv;
+  nsCOMPtr<nsIStringBundleService> sBundleService =
+    mozilla::services::GetStringBundleService();
+  NS_ENSURE_TRUE(sBundleService, NS_ERROR_UNEXPECTED);
+
+  rv = sBundleService->CreateBundle("chrome://messenger/locale/messenger.properties",
+                                    getter_AddRefs(bundle));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return bundle->GetStringFromName(u"localFolders", getter_Copies(localFoldersName));
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::CreateLocalMailAccount()
+{
+  // create the server
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  nsresult rv = CreateIncomingServer(NS_LITERAL_CSTRING("nobody"),
+                            NS_LITERAL_CSTRING("Local Folders"),
+                            NS_LITERAL_CSTRING("none"), getter_AddRefs(server));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsString localFoldersName;
+  rv = GetLocalFoldersPrettyName(localFoldersName);
+  NS_ENSURE_SUCCESS(rv, rv);
+  server->SetPrettyName(localFoldersName);
+
+  nsCOMPtr<nsINoIncomingServer> noServer;
+  noServer = do_QueryInterface(server, &rv);
+  if (NS_FAILED(rv)) return rv;
+
+  // create the directory structure for old 4.x "Local Mail"
+  // under <profile dir>/Mail/Local Folders or
+  // <"mail.directory" pref>/Local Folders
+  nsCOMPtr <nsIFile> mailDir;
+  nsCOMPtr <nsIFile> localFile;
+  bool dirExists;
+
+  // we want <profile>/Mail
+  rv = NS_GetSpecialDirectory(NS_APP_MAIL_50_DIR, getter_AddRefs(mailDir));
+  if (NS_FAILED(rv)) return rv;
+  localFile = do_QueryInterface(mailDir);
+
+  rv = mailDir->Exists(&dirExists);
+  if (NS_SUCCEEDED(rv) && !dirExists)
+    rv = mailDir->Create(nsIFile::DIRECTORY_TYPE, 0775);
+  if (NS_FAILED(rv)) return rv;
+
+  // set the default local path for "none"
+  rv = server->SetDefaultLocalPath(localFile);
+  if (NS_FAILED(rv)) return rv;
+
+  // Create an account when valid server values are established.
+  // This will keep the status of accounts sane by avoiding the addition of incomplete accounts.
+  nsCOMPtr<nsIMsgAccount> account;
+  rv = CreateAccount(getter_AddRefs(account));
+  if (NS_FAILED(rv)) return rv;
+
+  // notice, no identity for local mail
+  // hook the server to the account
+  // after we set the server's local path
+  // (see bug #66018)
+  account->SetIncomingServer(server);
+
+  // remember this as the local folders server
+  return SetLocalFoldersServer(server);
+}
+
+  // nsIUrlListener methods
+
+NS_IMETHODIMP
+nsMsgAccountManager::OnStartRunningUrl(nsIURI * aUrl)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::OnStopRunningUrl(nsIURI * aUrl, nsresult aExitCode)
+{
+  if (aUrl)
+  {
+    nsCOMPtr<nsIImapUrl> imapUrl = do_QueryInterface(aUrl);
+    if (imapUrl)
+    {
+      nsImapAction imapAction = nsIImapUrl::nsImapTest;
+      imapUrl->GetImapAction(&imapAction);
+      switch(imapAction)
+      {
+        case nsIImapUrl::nsImapExpungeFolder:
+          if (m_folderDoingCleanupInbox)
+          {
+            PR_CEnterMonitor(m_folderDoingCleanupInbox);
+            PR_CNotifyAll(m_folderDoingCleanupInbox);
+            m_cleanupInboxInProgress = false;
+            PR_CExitMonitor(m_folderDoingCleanupInbox);
+            m_folderDoingCleanupInbox=nullptr;   //reset to nullptr
+          }
+          break;
+        case nsIImapUrl::nsImapDeleteAllMsgs:
+          if (m_folderDoingEmptyTrash)
+          {
+            PR_CEnterMonitor(m_folderDoingEmptyTrash);
+            PR_CNotifyAll(m_folderDoingEmptyTrash);
+            m_emptyTrashInProgress = false;
+            PR_CExitMonitor(m_folderDoingEmptyTrash);
+            m_folderDoingEmptyTrash = nullptr;  //reset to nullptr;
+          }
+          break;
+        default:
+          break;
+       }
+     }
+   }
+   return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::SetFolderDoingEmptyTrash(nsIMsgFolder *folder)
+{
+  m_folderDoingEmptyTrash = folder;
+  m_emptyTrashInProgress = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetEmptyTrashInProgress(bool *bVal)
+{
+  NS_ENSURE_ARG_POINTER(bVal);
+  *bVal = m_emptyTrashInProgress;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::SetFolderDoingCleanupInbox(nsIMsgFolder *folder)
+{
+  m_folderDoingCleanupInbox = folder;
+  m_cleanupInboxInProgress = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetCleanupInboxInProgress(bool *bVal)
+{
+  NS_ENSURE_ARG_POINTER(bVal);
+  *bVal = m_cleanupInboxInProgress;
+  return NS_OK;
+}
+
+void
+nsMsgAccountManager::SetLastServerFound(nsIMsgIncomingServer *server, const nsACString& hostname,
+                                        const nsACString& username, const int32_t port, const nsACString& type)
+{
+  m_lastFindServerResult = server;
+  m_lastFindServerHostName = hostname;
+  m_lastFindServerUserName = username;
+  m_lastFindServerPort = port;
+  m_lastFindServerType = type;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::SaveAccountInfo()
+{
+  nsresult rv;
+  nsCOMPtr<nsIPrefService> pref(do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv,rv);
+  return pref->SavePrefFile(nullptr);
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetChromePackageName(const nsACString& aExtensionName, nsACString& aChromePackageName)
+{
+  nsresult rv;
+  nsCOMPtr<nsICategoryManager> catman = do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr<nsISimpleEnumerator> e;
+  rv = catman->EnumerateCategory(MAILNEWS_ACCOUNTMANAGER_EXTENSIONS, getter_AddRefs(e));
+  if(NS_SUCCEEDED(rv) && e) {
+    while (true) {
+      nsCOMPtr<nsISupports> supports;
+      rv = e->GetNext(getter_AddRefs(supports));
+      nsCOMPtr<nsISupportsCString> catEntry = do_QueryInterface(supports);
+      if (NS_FAILED(rv) || !catEntry)
+        break;
+
+      nsAutoCString entryString;
+      rv = catEntry->GetData(entryString);
+      if (NS_FAILED(rv))
+         break;
+
+      nsCString contractidString;
+      rv = catman->GetCategoryEntry(MAILNEWS_ACCOUNTMANAGER_EXTENSIONS, entryString.get(),
+                                    getter_Copies(contractidString));
+      if (NS_FAILED(rv))
+        break;
+
+      nsCOMPtr <nsIMsgAccountManagerExtension> extension = do_GetService(contractidString.get(), &rv);
+      if (NS_FAILED(rv) || !extension)
+        break;
+
+      nsCString name;
+      rv = extension->GetName(name);
+      if (NS_FAILED(rv))
+        break;
+
+      if (name.Equals(aExtensionName))
+        return extension->GetChromePackageName(aChromePackageName);
+    }
+  }
+  return NS_ERROR_UNEXPECTED;
+}
+
+class VFChangeListenerEvent : public mozilla::Runnable
+{
+public:
+  VFChangeListenerEvent(VirtualFolderChangeListener *vfChangeListener,
+                        nsIMsgFolder *virtFolder, nsIMsgDatabase *virtDB)
+    : mVFChangeListener(vfChangeListener), mFolder(virtFolder), mDB(virtDB)
+  {}
+
+  NS_IMETHOD Run()
+  {
+    if (mVFChangeListener)
+      mVFChangeListener->ProcessUpdateEvent(mFolder, mDB);
+    return NS_OK;
+  }
+
+private:
+  RefPtr<VirtualFolderChangeListener> mVFChangeListener;
+  nsCOMPtr<nsIMsgFolder> mFolder;
+  nsCOMPtr<nsIMsgDatabase> mDB;
+};
+
+NS_IMPL_ISUPPORTS(VirtualFolderChangeListener, nsIDBChangeListener)
+
+VirtualFolderChangeListener::VirtualFolderChangeListener() :
+  m_searchOnMsgStatus(false), m_batchingEvents(false)
+{}
+
+nsresult VirtualFolderChangeListener::Init()
+{
+  nsCOMPtr <nsIMsgDatabase> msgDB;
+  nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+
+  nsresult rv = m_virtualFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo), getter_AddRefs(msgDB));
+  if (NS_SUCCEEDED(rv) && msgDB)
+  {
+    nsCString searchTermString;
+    dbFolderInfo->GetCharProperty("searchStr", searchTermString);
+    nsCOMPtr<nsIMsgFilterService> filterService = do_GetService(NS_MSGFILTERSERVICE_CONTRACTID, &rv);
+    nsCOMPtr<nsIMsgFilterList> filterList;
+    rv = filterService->GetTempFilterList(m_virtualFolder, getter_AddRefs(filterList));
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr <nsIMsgFilter> tempFilter;
+    filterList->CreateFilter(NS_LITERAL_STRING("temp"), getter_AddRefs(tempFilter));
+    NS_ENSURE_SUCCESS(rv, rv);
+    filterList->ParseCondition(tempFilter, searchTermString.get());
+    NS_ENSURE_SUCCESS(rv, rv);
+    m_searchSession = do_CreateInstance(NS_MSGSEARCHSESSION_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsISupportsArray> searchTerms;
+    rv = tempFilter->GetSearchTerms(getter_AddRefs(searchTerms));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // we add the search scope right before we match the header,
+    // because we don't want the search scope caching the body input
+    // stream, because that holds onto the mailbox file, breaking
+    // compaction.
+
+    // add each item in termsArray to the search session
+    uint32_t numTerms;
+    searchTerms->Count(&numTerms);
+    for (uint32_t i = 0; i < numTerms; i++)
+    {
+      nsCOMPtr <nsIMsgSearchTerm> searchTerm (do_QueryElementAt(searchTerms, i));
+      nsMsgSearchAttribValue attrib;
+      searchTerm->GetAttrib(&attrib);
+      if (attrib == nsMsgSearchAttrib::MsgStatus)
+        m_searchOnMsgStatus = true;
+      m_searchSession->AppendTerm(searchTerm);
+    }
+  }
+  return rv;
+}
+
+  /**
+   * nsIDBChangeListener
+   */
+
+NS_IMETHODIMP
+VirtualFolderChangeListener::OnHdrPropertyChanged(nsIMsgDBHdr *aHdrChanged, bool aPreChange, uint32_t *aStatus,
+                                                 nsIDBChangeListener *aInstigator)
+{
+  const uint32_t kMatch = 0x1;
+  const uint32_t kRead = 0x2;
+  const uint32_t kNew = 0x4;
+  NS_ENSURE_ARG_POINTER(aHdrChanged);
+  NS_ENSURE_ARG_POINTER(aStatus);
+
+  uint32_t flags;
+  bool match;
+  nsCOMPtr<nsIMsgDatabase> msgDB;
+  nsresult rv = m_folderWatching->GetMsgDatabase(getter_AddRefs(msgDB));
+  NS_ENSURE_SUCCESS(rv, rv);
+  // we don't want any early returns from this function, until we've
+  // called ClearScopes on the search session.
+  m_searchSession->AddScopeTerm(nsMsgSearchScope::offlineMail, m_folderWatching);
+  rv = m_searchSession->MatchHdr(aHdrChanged, msgDB, &match);
+  m_searchSession->ClearScopes();
+  NS_ENSURE_SUCCESS(rv, rv);
+  aHdrChanged->GetFlags(&flags);
+
+  if (aPreChange) // We're looking at the old header, save status
+  {
+    *aStatus = 0;
+    if (match)
+      *aStatus |= kMatch;
+    if (flags & nsMsgMessageFlags::Read)
+      *aStatus |= kRead;
+    if (flags & nsMsgMessageFlags::New)
+      *aStatus |= kNew;
+    return NS_OK;
+  }
+
+  // This is the post change section where changes are detected
+
+  bool wasMatch = *aStatus & kMatch;
+  if (!match && !wasMatch) // header not in virtual folder
+    return NS_OK;
+
+  int32_t totalDelta = 0, unreadDelta = 0, newDelta = 0;
+
+  if (match) {
+    totalDelta++;
+    if (!(flags & nsMsgMessageFlags::Read))
+      unreadDelta++;
+    if (flags & nsMsgMessageFlags::New)
+      newDelta++;
+  }
+
+  if (wasMatch) {
+    totalDelta--;
+    if (!(*aStatus & kRead)) unreadDelta--;
+    if (*aStatus & kNew) newDelta--;
+  }
+
+  if ( !(unreadDelta || totalDelta || newDelta) )
+    return NS_OK;
+
+  nsCOMPtr<nsIMsgDatabase> virtDatabase;
+  nsCOMPtr<nsIDBFolderInfo> dbFolderInfo;
+  rv = m_virtualFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo),
+                        getter_AddRefs(virtDatabase));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (unreadDelta)
+    dbFolderInfo->ChangeNumUnreadMessages(unreadDelta);
+
+  if (newDelta)
+  {
+    int32_t numNewMessages;
+    m_virtualFolder->GetNumNewMessages(false, &numNewMessages);
+    m_virtualFolder->SetNumNewMessages(numNewMessages + newDelta);
+    m_virtualFolder->SetHasNewMessages(numNewMessages + newDelta > 0);
+  }
+
+  if (totalDelta)
+  {
+    dbFolderInfo->ChangeNumMessages(totalDelta);
+    nsCString searchUri;
+    m_virtualFolder->GetURI(searchUri);
+    msgDB->UpdateHdrInCache(searchUri.get(), aHdrChanged, totalDelta == 1);
+  }
+
+    PostUpdateEvent(m_virtualFolder, virtDatabase);
+
+  return NS_OK;
+}
+
+void VirtualFolderChangeListener::DecrementNewMsgCount()
+{
+  int32_t numNewMessages;
+  m_virtualFolder->GetNumNewMessages(false, &numNewMessages);
+  if (numNewMessages > 0)
+    numNewMessages--;
+  m_virtualFolder->SetNumNewMessages(numNewMessages);
+  if (!numNewMessages)
+    m_virtualFolder->SetHasNewMessages(false);
+}
+
+NS_IMETHODIMP VirtualFolderChangeListener::OnHdrFlagsChanged(nsIMsgDBHdr *aHdrChanged, uint32_t aOldFlags, uint32_t aNewFlags, nsIDBChangeListener *aInstigator)
+{
+  nsCOMPtr <nsIMsgDatabase> msgDB;
+
+  nsresult rv = m_folderWatching->GetMsgDatabase(getter_AddRefs(msgDB));
+  bool oldMatch = false, newMatch = false;
+  // we don't want any early returns from this function, until we've
+  // called ClearScopes 0n the search session.
+  m_searchSession->AddScopeTerm(nsMsgSearchScope::offlineMail, m_folderWatching);
+  rv = m_searchSession->MatchHdr(aHdrChanged, msgDB, &newMatch);
+  if (NS_SUCCEEDED(rv) && m_searchOnMsgStatus)
+  {
+    // if status is a search criteria, check if the header matched before
+    // it changed, in order to determine if we need to bump the counts.
+    aHdrChanged->SetFlags(aOldFlags);
+    rv = m_searchSession->MatchHdr(aHdrChanged, msgDB, &oldMatch);
+    aHdrChanged->SetFlags(aNewFlags); // restore new flags even on match failure.
+  }
+  else
+    oldMatch = newMatch;
+  m_searchSession->ClearScopes();
+  NS_ENSURE_SUCCESS(rv, rv);
+  // we don't want to change the total counts if this virtual folder is open in a view,
+  // because we won't remove the header from view while it's open. On the other hand,
+  // it's hard to fix the count when the user clicks away to another folder, w/o re-running
+  // the search, or setting some sort of pending count change.
+  // Maybe this needs to be handled in the view code...the view could do the same calculation
+  // and also keep track of the counts changed. Then, when the view was closed, if it's a virtual
+  // folder, it could update the counts for the db.
+  if (oldMatch != newMatch || (oldMatch && (aOldFlags & nsMsgMessageFlags::Read) != (aNewFlags & nsMsgMessageFlags::Read)))
+  {
+    nsCOMPtr <nsIMsgDatabase> virtDatabase;
+    nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+
+    rv = m_virtualFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo), getter_AddRefs(virtDatabase));
+    NS_ENSURE_SUCCESS(rv, rv);
+    int32_t totalDelta = 0,  unreadDelta = 0;
+    if (oldMatch != newMatch)
+    {
+ //     bool isOpen = false;
+//      nsCOMPtr <nsIMsgMailSession> mailSession = do_GetService(NS_MSGMAILSESSION_CONTRACTID);
+//      if (mailSession && aFolder)
+//        mailSession->IsFolderOpenInWindow(m_virtualFolder, &isOpen);
+      // we can't remove headers that no longer match - but we might add headers that newly match, someday.
+//      if (!isOpen)
+        totalDelta = (oldMatch) ? -1 : 1;
+    }
+    bool msgHdrIsRead;
+    aHdrChanged->GetIsRead(&msgHdrIsRead);
+    if (oldMatch == newMatch) // read flag changed state
+      unreadDelta = (msgHdrIsRead) ? -1 : 1;
+    else if (oldMatch) // else header should removed
+      unreadDelta = (aOldFlags & nsMsgMessageFlags::Read) ? 0 : -1;
+    else               // header should be added
+      unreadDelta = (aNewFlags & nsMsgMessageFlags::Read) ? 0 : 1;
+    if (unreadDelta)
+      dbFolderInfo->ChangeNumUnreadMessages(unreadDelta);
+    if (totalDelta)
+      dbFolderInfo->ChangeNumMessages(totalDelta);
+    if (unreadDelta == -1 && aOldFlags & nsMsgMessageFlags::New)
+      DecrementNewMsgCount();
+
+    if (totalDelta)
+    {
+      nsCString searchUri;
+      m_virtualFolder->GetURI(searchUri);
+      msgDB->UpdateHdrInCache(searchUri.get(), aHdrChanged, totalDelta == 1);
+    }
+
+    PostUpdateEvent(m_virtualFolder, virtDatabase);
+  }
+  else if (oldMatch && (aOldFlags & nsMsgMessageFlags::New) &&
+           !(aNewFlags & nsMsgMessageFlags::New))
+    DecrementNewMsgCount();
+
+  return rv;
+}
+
+NS_IMETHODIMP VirtualFolderChangeListener::OnHdrDeleted(nsIMsgDBHdr *aHdrDeleted, nsMsgKey aParentKey, int32_t aFlags, nsIDBChangeListener *aInstigator)
+{
+  nsCOMPtr <nsIMsgDatabase> msgDB;
+
+  nsresult rv = m_folderWatching->GetMsgDatabase(getter_AddRefs(msgDB));
+  NS_ENSURE_SUCCESS(rv, rv);
+  bool match = false;
+  m_searchSession->AddScopeTerm(nsMsgSearchScope::offlineMail, m_folderWatching);
+  // Since the notifier went to the trouble of passing in the msg flags,
+  // we should use them when doing the match.
+  uint32_t msgFlags;
+  aHdrDeleted->GetFlags(&msgFlags);
+  aHdrDeleted->SetFlags(aFlags);
+  rv = m_searchSession->MatchHdr(aHdrDeleted, msgDB, &match);
+  aHdrDeleted->SetFlags(msgFlags);
+  m_searchSession->ClearScopes();
+  if (match)
+  {
+    nsCOMPtr <nsIMsgDatabase> virtDatabase;
+    nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+
+    rv = m_virtualFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo), getter_AddRefs(virtDatabase));
+    NS_ENSURE_SUCCESS(rv, rv);
+    bool msgHdrIsRead;
+    aHdrDeleted->GetIsRead(&msgHdrIsRead);
+    if (!msgHdrIsRead)
+      dbFolderInfo->ChangeNumUnreadMessages(-1);
+    dbFolderInfo->ChangeNumMessages(-1);
+    if (aFlags & nsMsgMessageFlags::New)
+    {
+      int32_t numNewMessages;
+      m_virtualFolder->GetNumNewMessages(false, &numNewMessages);
+      m_virtualFolder->SetNumNewMessages(numNewMessages - 1);
+      if (numNewMessages == 1)
+        m_virtualFolder->SetHasNewMessages(false);
+    }
+
+    nsCString searchUri;
+    m_virtualFolder->GetURI(searchUri);
+    msgDB->UpdateHdrInCache(searchUri.get(), aHdrDeleted, false);
+
+    PostUpdateEvent(m_virtualFolder, virtDatabase);
+  }
+  return rv;
+}
+
+NS_IMETHODIMP VirtualFolderChangeListener::OnHdrAdded(nsIMsgDBHdr *aNewHdr, nsMsgKey aParentKey, int32_t aFlags, nsIDBChangeListener *aInstigator)
+{
+  nsCOMPtr<nsIMsgDatabase> msgDB;
+
+  nsresult rv = m_folderWatching->GetMsgDatabase(getter_AddRefs(msgDB));
+  NS_ENSURE_SUCCESS(rv, rv);
+  bool match = false;
+  if (!m_searchSession)
+    return NS_ERROR_NULL_POINTER;
+
+  m_searchSession->AddScopeTerm(nsMsgSearchScope::offlineMail, m_folderWatching);
+  rv = m_searchSession->MatchHdr(aNewHdr, msgDB, &match);
+  m_searchSession->ClearScopes();
+  if (match)
+  {
+    nsCOMPtr <nsIMsgDatabase> virtDatabase;
+    nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+
+    rv = m_virtualFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo), getter_AddRefs(virtDatabase));
+    NS_ENSURE_SUCCESS(rv, rv);
+    bool msgHdrIsRead;
+    uint32_t msgFlags;
+    aNewHdr->GetIsRead(&msgHdrIsRead);
+    aNewHdr->GetFlags(&msgFlags);
+    if (!msgHdrIsRead)
+      dbFolderInfo->ChangeNumUnreadMessages(1);
+    if (msgFlags & nsMsgMessageFlags::New)
+    {
+      int32_t numNewMessages;
+      m_virtualFolder->GetNumNewMessages(false, &numNewMessages);
+      m_virtualFolder->SetHasNewMessages(true);
+      m_virtualFolder->SetNumNewMessages(numNewMessages + 1);
+    }
+    nsCString searchUri;
+    m_virtualFolder->GetURI(searchUri);
+    msgDB->UpdateHdrInCache(searchUri.get(), aNewHdr, true);
+    dbFolderInfo->ChangeNumMessages(1);
+    PostUpdateEvent(m_virtualFolder, virtDatabase);
+  }
+  return rv;
+}
+
+NS_IMETHODIMP VirtualFolderChangeListener::OnParentChanged(nsMsgKey aKeyChanged, nsMsgKey oldParent, nsMsgKey newParent, nsIDBChangeListener *aInstigator)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP VirtualFolderChangeListener::OnAnnouncerGoingAway(nsIDBChangeAnnouncer *instigator)
+{
+  nsCOMPtr <nsIMsgDatabase> msgDB = do_QueryInterface(instigator);
+  if (msgDB)
+    msgDB->RemoveListener(this);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+VirtualFolderChangeListener::OnEvent(nsIMsgDatabase *aDB, const char *aEvent)
+{
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP VirtualFolderChangeListener::OnReadChanged(nsIDBChangeListener *aInstigator)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP VirtualFolderChangeListener::OnJunkScoreChanged(nsIDBChangeListener *aInstigator)
+{
+  return NS_OK;
+}
+
+nsresult VirtualFolderChangeListener::PostUpdateEvent(nsIMsgFolder *virtualFolder,
+                                                  nsIMsgDatabase *virtDatabase)
+{
+  if (m_batchingEvents)
+    return NS_OK;
+  m_batchingEvents = true;
+  nsCOMPtr<nsIRunnable> event = new VFChangeListenerEvent(this, virtualFolder,
+                                                          virtDatabase);
+  return NS_DispatchToCurrentThread(event);
+}
+
+void VirtualFolderChangeListener::ProcessUpdateEvent(nsIMsgFolder *virtFolder,
+                                                     nsIMsgDatabase *virtDB)
+{
+  m_batchingEvents = false;
+  virtFolder->UpdateSummaryTotals(true); // force update from db.
+  virtDB->Commit(nsMsgDBCommitType::kLargeCommit);
+}
+
+nsresult nsMsgAccountManager::GetVirtualFoldersFile(nsCOMPtr<nsIFile>& file)
+{
+  nsCOMPtr<nsIFile> profileDir;
+  nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR, getter_AddRefs(profileDir));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = profileDir->AppendNative(nsDependentCString("virtualFolders.dat"));
+  if (NS_SUCCEEDED(rv))
+    file = do_QueryInterface(profileDir, &rv);
+  return rv;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::LoadVirtualFolders()
+{
+  nsCOMPtr <nsIFile> file;
+  GetVirtualFoldersFile(file);
+  if (!file)
+    return NS_ERROR_FAILURE;
+
+  if (m_virtualFoldersLoaded)
+    return NS_OK;
+
+  m_loadingVirtualFolders = true;
+
+  nsresult rv;
+  nsCOMPtr<nsIMsgDBService> msgDBService = do_GetService(NS_MSGDB_SERVICE_CONTRACTID, &rv);
+  if (msgDBService)
+  {
+     NS_ENSURE_SUCCESS(rv, rv);
+     nsCOMPtr<nsIFileInputStream> fileStream = do_CreateInstance(NS_LOCALFILEINPUTSTREAM_CONTRACTID, &rv);
+     NS_ENSURE_SUCCESS(rv, rv);
+
+     rv = fileStream->Init(file,  PR_RDONLY, 0664, false);
+     nsCOMPtr <nsILineInputStream> lineInputStream(do_QueryInterface(fileStream));
+
+    bool isMore = true;
+    nsAutoCString buffer;
+    int32_t version = -1;
+    nsCOMPtr <nsIMsgFolder> virtualFolder;
+    nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+    nsCOMPtr<nsIRDFResource> resource;
+    nsCOMPtr<nsIRDFService> rdf(do_GetService("@mozilla.org/rdf/rdf-service;1", &rv));
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr<nsIArray> allFolders;
+
+    while (isMore &&
+           NS_SUCCEEDED(lineInputStream->ReadLine(buffer, &isMore)))
+    {
+      if (!buffer.IsEmpty())
+      {
+        if (version == -1)
+        {
+          buffer.Cut(0, 8);
+          nsresult irv;
+          version = buffer.ToInteger(&irv);
+          continue;
+        }
+        if (Substring(buffer, 0, 4).Equals("uri="))
+        {
+          buffer.Cut(0, 4);
+          dbFolderInfo = nullptr;
+
+          rv = rdf->GetResource(buffer, getter_AddRefs(resource));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          virtualFolder = do_QueryInterface(resource);
+          if (!virtualFolder)
+            NS_WARNING("Failed to QI virtual folder, is this leftover from an optional account type?");
+          else
+          {
+            nsCOMPtr <nsIMsgFolder> grandParent;
+            nsCOMPtr <nsIMsgFolder> oldParent;
+            nsCOMPtr <nsIMsgFolder> parentFolder;
+            bool isServer;
+            do
+            {
+              // need to add the folder as a sub-folder of its parent.
+              int32_t lastSlash = buffer.RFindChar('/');
+              if (lastSlash == kNotFound)
+                break;
+              nsDependentCSubstring parentUri(buffer, 0, lastSlash);
+              // hold a reference so it won't get deleted before it's parented.
+              oldParent = parentFolder;
+
+              rdf->GetResource(parentUri, getter_AddRefs(resource));
+              parentFolder = do_QueryInterface(resource);
+              if (parentFolder)
+              {
+                nsAutoString currentFolderNameStr;
+                nsAutoCString currentFolderNameCStr;
+                MsgUnescapeString(nsCString(Substring(buffer, lastSlash + 1, buffer.Length())), 0, currentFolderNameCStr);
+                CopyUTF8toUTF16(currentFolderNameCStr, currentFolderNameStr);
+                nsCOMPtr <nsIMsgFolder> childFolder;
+                nsCOMPtr <nsIMsgDatabase> db;
+                // force db to get created.
+                virtualFolder->SetParent(parentFolder);
+                rv = virtualFolder->GetMsgDatabase(getter_AddRefs(db));
+                if (rv == NS_MSG_ERROR_FOLDER_SUMMARY_MISSING)
+                  msgDBService->CreateNewDB(virtualFolder, getter_AddRefs(db));
+                if (db)
+                  rv = db->GetDBFolderInfo(getter_AddRefs(dbFolderInfo));
+                else
+                  break;
+
+                parentFolder->AddSubfolder(currentFolderNameStr, getter_AddRefs(childFolder));
+                virtualFolder->SetFlag(nsMsgFolderFlags::Virtual);
+                if (childFolder)
+                  parentFolder->NotifyItemAdded(childFolder);
+                // here we make sure if our parent is rooted - if not, we're
+                // going to loop and add our parent as a child of its grandparent
+                // and repeat until we get to the server, or a folder that
+                // has its parent set.
+                parentFolder->GetParent(getter_AddRefs(grandParent));
+                parentFolder->GetIsServer(&isServer);
+                buffer.SetLength(lastSlash);
+              }
+              else
+                break;
+            } while (!grandParent && !isServer);
+          }
+        }
+        else if (dbFolderInfo && Substring(buffer, 0, 6).Equals("scope="))
+        {
+          buffer.Cut(0, 6);
+          // if this is a cross folder virtual folder, we have a list of folders uris,
+          // and we have to add a pending listener for each of them.
+          if (!buffer.IsEmpty())
+          {
+            ParseAndVerifyVirtualFolderScope(buffer, rdf);
+            dbFolderInfo->SetCharProperty(kSearchFolderUriProp, buffer);
+            AddVFListenersForVF(virtualFolder, buffer, rdf, msgDBService);
+          }
+        }
+        else if (dbFolderInfo && Substring(buffer, 0, 6).Equals("terms="))
+        {
+          buffer.Cut(0, 6);
+          dbFolderInfo->SetCharProperty("searchStr", buffer);
+        }
+        else if (dbFolderInfo && Substring(buffer, 0, 13).Equals("searchOnline="))
+        {
+          buffer.Cut(0, 13);
+          dbFolderInfo->SetBooleanProperty("searchOnline", buffer.Equals("true"));
+        }
+        else if (dbFolderInfo &&
+                 Substring(buffer, 0, SEARCH_FOLDER_FLAG_LEN + 1)
+                   .Equals(SEARCH_FOLDER_FLAG"="))
+        {
+          buffer.Cut(0, SEARCH_FOLDER_FLAG_LEN + 1);
+          dbFolderInfo->SetCharProperty(SEARCH_FOLDER_FLAG, buffer);
+        }
+      }
+    }
+  }
+
+  m_loadingVirtualFolders = false;
+  m_virtualFoldersLoaded = true;
+  return rv;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::SaveVirtualFolders()
+{
+  if (!m_virtualFoldersLoaded)
+    return NS_OK;
+
+  nsCOMPtr<nsIFile> file;
+  GetVirtualFoldersFile(file);
+
+  // Open a buffered, safe output stream
+  nsCOMPtr<nsIOutputStream> outStream;
+  nsresult rv = MsgNewSafeBufferedFileOutputStream(getter_AddRefs(outStream),
+                                                   file,
+                                                   PR_CREATE_FILE | PR_WRONLY | PR_TRUNCATE,
+                                                   0664);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  WriteLineToOutputStream("version=", "1", outStream);
+  for (auto iter = m_incomingServers.Iter(); !iter.Done(); iter.Next()) {
+    nsCOMPtr<nsIMsgIncomingServer>& server = iter.Data();
+    if (server)
+    {
+      nsCOMPtr <nsIMsgFolder> rootFolder;
+      server->GetRootFolder(getter_AddRefs(rootFolder));
+      if (rootFolder)
+      {
+        nsCOMPtr <nsIArray> virtualFolders;
+        nsresult rv = rootFolder->GetFoldersWithFlags(nsMsgFolderFlags::Virtual,
+                                             getter_AddRefs(virtualFolders));
+        if (NS_FAILED(rv)) {
+          continue;
+        }
+        uint32_t vfCount;
+        virtualFolders->GetLength(&vfCount);
+        for (uint32_t folderIndex = 0; folderIndex < vfCount; folderIndex++)
+        {
+          nsCOMPtr <nsIRDFResource> folderRes (do_QueryElementAt(virtualFolders, folderIndex));
+          nsCOMPtr <nsIMsgFolder> msgFolder = do_QueryInterface(folderRes);
+          const char *uri;
+          nsCOMPtr <nsIMsgDatabase> db;
+          nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+          rv = msgFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo), getter_AddRefs(db)); // force db to get created.
+          if (dbFolderInfo)
+          {
+            nsCString srchFolderUri;
+            nsCString searchTerms;
+            nsCString regexScope;
+            nsCString vfFolderFlag;
+            bool searchOnline = false;
+            dbFolderInfo->GetBooleanProperty("searchOnline", false, &searchOnline);
+            dbFolderInfo->GetCharProperty(kSearchFolderUriProp, srchFolderUri);
+            dbFolderInfo->GetCharProperty("searchStr", searchTerms);
+            // logically searchFolderFlag is an int, but since we want to
+            // write out a string, get it as a string.
+            dbFolderInfo->GetCharProperty(SEARCH_FOLDER_FLAG, vfFolderFlag);
+            folderRes->GetValueConst(&uri);
+            if (!srchFolderUri.IsEmpty() && !searchTerms.IsEmpty())
+            {
+              WriteLineToOutputStream("uri=", uri, outStream);
+              if (!vfFolderFlag.IsEmpty())
+                WriteLineToOutputStream(SEARCH_FOLDER_FLAG"=", vfFolderFlag.get(), outStream);
+              WriteLineToOutputStream("scope=", srchFolderUri.get(), outStream);
+              WriteLineToOutputStream("terms=", searchTerms.get(), outStream);
+              WriteLineToOutputStream("searchOnline=", searchOnline ? "true" : "false", outStream);
+            }
+          }
+        }
+      }
+    }
+  }
+
+  nsCOMPtr<nsISafeOutputStream> safeStream = do_QueryInterface(outStream, &rv);
+  NS_ASSERTION(safeStream, "expected a safe output stream!");
+  if (safeStream) {
+    rv = safeStream->Finish();
+    if (NS_FAILED(rv)) {
+      NS_WARNING("failed to save personal dictionary file! possible data loss");
+    }
+  }
+  return rv;
+}
+
+nsresult nsMsgAccountManager::WriteLineToOutputStream(const char *prefix, const char * line, nsIOutputStream *outputStream)
+{
+  uint32_t writeCount;
+  outputStream->Write(prefix, strlen(prefix), &writeCount);
+  outputStream->Write(line, strlen(line), &writeCount);
+  outputStream->Write("\n", 1, &writeCount);
+  return NS_OK;
+}
+
+/**
+ * Parse the '|' separated folder uri string into individual folders, verify
+ * that the folders are real. If we were to add things like wildcards, we
+ * could implement the expansion into real folders here.
+ *
+ * @param buffer On input, list of folder uri's, on output, verified list.
+ * @param rdf rdf service
+ */
+void nsMsgAccountManager::ParseAndVerifyVirtualFolderScope(nsCString &buffer,
+                                                           nsIRDFService *rdf)
+{
+  nsCString verifiedFolders;
+  nsTArray<nsCString> folderUris;
+  ParseString(buffer, '|', folderUris);
+  nsCOMPtr <nsIRDFResource> resource;
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  nsCOMPtr<nsIMsgFolder> parent;
+
+  for (uint32_t i = 0; i < folderUris.Length(); i++)
+  {
+    rdf->GetResource(folderUris[i], getter_AddRefs(resource));
+    nsCOMPtr <nsIMsgFolder> realFolder = do_QueryInterface(resource);
+    if (!realFolder)
+      continue;
+    realFolder->GetParent(getter_AddRefs(parent));
+    if (!parent)
+      continue;
+    realFolder->GetServer(getter_AddRefs(server));
+    if (!server)
+      continue;
+    if (!verifiedFolders.IsEmpty())
+      verifiedFolders.Append('|');
+    verifiedFolders.Append(folderUris[i]);
+  }
+  buffer.Assign(verifiedFolders);
+}
+
+// This conveniently works to add a single folder as well.
+nsresult nsMsgAccountManager::AddVFListenersForVF(nsIMsgFolder *virtualFolder,
+                                                  const nsCString& srchFolderUris,
+                                                  nsIRDFService *rdf,
+                                                  nsIMsgDBService *msgDBService)
+{
+  nsTArray<nsCString> folderUris;
+  ParseString(srchFolderUris, '|', folderUris);
+  nsCOMPtr <nsIRDFResource> resource;
+
+  for (uint32_t i = 0; i < folderUris.Length(); i++)
+  {
+    rdf->GetResource(folderUris[i], getter_AddRefs(resource));
+    nsCOMPtr <nsIMsgFolder> realFolder = do_QueryInterface(resource);
+    if (!realFolder)
+      continue;
+    RefPtr<VirtualFolderChangeListener> dbListener = new VirtualFolderChangeListener();
+    NS_ENSURE_TRUE(dbListener, NS_ERROR_OUT_OF_MEMORY);
+    dbListener->m_virtualFolder = virtualFolder;
+    dbListener->m_folderWatching = realFolder;
+    if (NS_FAILED(dbListener->Init()))
+    {
+      dbListener = nullptr;
+      continue;
+    }
+    m_virtualFolderListeners.AppendElement(dbListener);
+    msgDBService->RegisterPendingListener(realFolder, dbListener);
+  }
+  return NS_OK;
+}
+
+// This is called if a folder that's part of the scope of a saved search
+// has gone away.
+nsresult nsMsgAccountManager::RemoveVFListenerForVF(nsIMsgFolder *virtualFolder,
+                                                    nsIMsgFolder *folder)
+{
+  nsresult rv;
+  nsCOMPtr<nsIMsgDBService> msgDBService(do_GetService(NS_MSGDB_SERVICE_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsTObserverArray<RefPtr<VirtualFolderChangeListener> >::ForwardIterator iter(m_virtualFolderListeners);
+  RefPtr<VirtualFolderChangeListener> listener;
+
+  while (iter.HasMore())
+  {
+    listener = iter.GetNext();
+    if (listener->m_folderWatching == folder &&
+        listener->m_virtualFolder == virtualFolder)
+    {
+      msgDBService->UnregisterPendingListener(listener);
+      m_virtualFolderListeners.RemoveElement(listener);
+      break;
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::GetAllFolders(nsIArray **aAllFolders)
+{
+  NS_ENSURE_ARG_POINTER(aAllFolders);
+
+  nsCOMPtr<nsIArray> servers;
+  nsresult rv = GetAllServers(getter_AddRefs(servers));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  uint32_t numServers = 0;
+  rv = servers->GetLength(&numServers);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMutableArray> allFolders(do_CreateInstance(NS_ARRAY_CONTRACTID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  uint32_t i;
+  for (i = 0; i < numServers; i++)
+  {
+    nsCOMPtr<nsIMsgIncomingServer> server = do_QueryElementAt(servers, i);
+    if (server)
+    {
+      nsCOMPtr<nsIMsgFolder> rootFolder;
+      server->GetRootFolder(getter_AddRefs(rootFolder));
+      if (rootFolder)
+        rootFolder->ListDescendants(allFolders);
+    }
+  }
+
+  allFolders.forget(aAllFolders);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::OnItemAdded(nsIMsgFolder *parentItem, nsISupports *item)
+{
+  nsCOMPtr<nsIMsgFolder> folder = do_QueryInterface(item);
+  // just kick out with a success code if the item in question is not a folder
+  if (!folder)
+    return NS_OK;
+
+  uint32_t folderFlags;
+  folder->GetFlags(&folderFlags);
+  bool addToSmartFolders = false;
+  folder->IsSpecialFolder(nsMsgFolderFlags::Inbox |
+                          nsMsgFolderFlags::Templates |
+                          nsMsgFolderFlags::Trash |
+                          nsMsgFolderFlags::Drafts, false,
+                          &addToSmartFolders);
+  // For Sent/Archives/Trash, we treat sub-folders of those folders as
+  // "special", and want to add them the smart folders search scope.
+  // So we check if this is a sub-folder of one of those special folders
+  // and set the corresponding folderFlag if so.
+  if (!addToSmartFolders)
+  {
+    bool isSpecial = false;
+    folder->IsSpecialFolder(nsMsgFolderFlags::SentMail, true, &isSpecial);
+    if (isSpecial)
+    {
+      addToSmartFolders = true;
+      folderFlags |= nsMsgFolderFlags::SentMail;
+    }
+    folder->IsSpecialFolder(nsMsgFolderFlags::Archive, true, &isSpecial);
+    if (isSpecial)
+    {
+      addToSmartFolders = true;
+      folderFlags |= nsMsgFolderFlags::Archive;
+    }
+    folder->IsSpecialFolder(nsMsgFolderFlags::Trash, true, &isSpecial);
+    if (isSpecial)
+    {
+      addToSmartFolders = true;
+      folderFlags |= nsMsgFolderFlags::Trash;
+    }
+  }
+  nsresult rv = NS_OK;
+  // if this is a special folder, check if we have a saved search over
+  // folders with this flag, and if so, add this folder to the scope.
+  if (addToSmartFolders)
+  {
+    // quick way to enumerate the saved searches.
+    nsTObserverArray<RefPtr<VirtualFolderChangeListener> >::ForwardIterator iter(m_virtualFolderListeners);
+    RefPtr<VirtualFolderChangeListener> listener;
+
+    while (iter.HasMore())
+    {
+      listener = iter.GetNext();
+      nsCOMPtr <nsIMsgDatabase> db;
+      nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+      listener->m_virtualFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo),
+                                                      getter_AddRefs(db));
+      if (dbFolderInfo)
+      {
+        uint32_t vfFolderFlag;
+        dbFolderInfo->GetUint32Property("searchFolderFlag", 0, & vfFolderFlag);
+        // found a saved search over folders w/ the same flag as the new folder.
+        if (vfFolderFlag & folderFlags)
+        {
+          nsCString searchURI;
+          dbFolderInfo->GetCharProperty(kSearchFolderUriProp, searchURI);
+
+          // "normalize" searchURI so we can search for |folderURI|.
+          if (!searchURI.IsEmpty())
+          {
+            searchURI.Insert('|', 0);
+            searchURI.Append('|');
+          }
+          nsCString folderURI;
+          folder->GetURI(folderURI);
+
+          int32_t index = searchURI.Find(folderURI);
+          if (index == kNotFound)
+          {
+            searchURI.Cut(0, 1);
+            searchURI.Append(folderURI);
+            dbFolderInfo->SetCharProperty(kSearchFolderUriProp, searchURI);
+            break;
+          }
+          // New sent or archive folder, need to add sub-folders to smart folder.
+          if (vfFolderFlag & (nsMsgFolderFlags::Archive | nsMsgFolderFlags::SentMail))
+          {
+            nsCOMPtr<nsIArray> allDescendants;
+            rv = folder->GetDescendants(getter_AddRefs(allDescendants));
+            NS_ENSURE_SUCCESS(rv, rv);
+
+            uint32_t cnt = 0;
+            rv = allDescendants->GetLength(&cnt);
+            NS_ENSURE_SUCCESS(rv, rv);
+
+            nsCOMPtr<nsIMsgFolder> parent;
+            for (uint32_t j = 0; j < cnt; j++)
+            {
+              nsCOMPtr<nsIMsgFolder> subFolder = do_QueryElementAt(allDescendants, j);
+              if (subFolder)
+              {
+                subFolder->GetParent(getter_AddRefs(parent));
+                OnItemAdded(parent, subFolder);
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  // need to make sure this isn't happening during loading of virtualfolders.dat
+  if (folderFlags & nsMsgFolderFlags::Virtual && !m_loadingVirtualFolders)
+  {
+    // When a new virtual folder is added, need to create a db Listener for it.
+    nsCOMPtr<nsIMsgDBService> msgDBService = do_GetService(NS_MSGDB_SERVICE_CONTRACTID, &rv);
+    if (msgDBService)
+    {
+      nsCOMPtr <nsIMsgDatabase> virtDatabase;
+      nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+      rv = folder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo), getter_AddRefs(virtDatabase));
+      NS_ENSURE_SUCCESS(rv, rv);
+      nsCString srchFolderUri;
+      dbFolderInfo->GetCharProperty(kSearchFolderUriProp, srchFolderUri);
+      nsCOMPtr<nsIRDFService> rdf(do_GetService("@mozilla.org/rdf/rdf-service;1", &rv));
+      AddVFListenersForVF(folder, srchFolderUri, rdf, msgDBService);
+    }
+    rv = SaveVirtualFolders();
+  }
+  return rv;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::OnItemRemoved(nsIMsgFolder *parentItem, nsISupports *item)
+{
+  nsCOMPtr<nsIMsgFolder> folder = do_QueryInterface(item);
+  // just kick out with a success code if the item in question is not a folder
+  if (!folder)
+    return NS_OK;
+  nsresult rv = NS_OK;
+  uint32_t folderFlags;
+  folder->GetFlags(&folderFlags);
+  if (folderFlags & nsMsgFolderFlags::Virtual) // if we removed a VF, flush VF list to disk.
+  {
+    rv = SaveVirtualFolders();
+    // clear flags on deleted folder if it's a virtual folder, so that creating a new folder
+    // with the same name doesn't cause confusion.
+    folder->SetFlags(0);
+    return rv;
+  }
+  // need to update the saved searches to check for a few things:
+  // 1. Folder removed was in the scope of a saved search - if so, remove the
+  //    uri from the scope of the saved search.
+  // 2. If the scope is now empty, remove the saved search.
+
+  // build a "normalized" uri that we can do a find on.
+  nsCString removedFolderURI;
+  folder->GetURI(removedFolderURI);
+  removedFolderURI.Insert('|', 0);
+  removedFolderURI.Append('|');
+
+  // Enumerate the saved searches.
+  nsTObserverArray<RefPtr<VirtualFolderChangeListener> >::ForwardIterator iter(m_virtualFolderListeners);
+  RefPtr<VirtualFolderChangeListener> listener;
+
+  while (iter.HasMore())
+  {
+    listener = iter.GetNext();
+    nsCOMPtr<nsIMsgDatabase> db;
+    nsCOMPtr<nsIDBFolderInfo> dbFolderInfo;
+    nsCOMPtr<nsIMsgFolder> savedSearch = listener->m_virtualFolder;
+    savedSearch->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo),
+                                      getter_AddRefs(db));
+    if (dbFolderInfo)
+    {
+      nsCString searchURI;
+      dbFolderInfo->GetCharProperty(kSearchFolderUriProp, searchURI);
+      // "normalize" searchURI so we can search for |folderURI|.
+      searchURI.Insert('|', 0);
+      searchURI.Append('|');
+      int32_t index = searchURI.Find(removedFolderURI);
+      if (index != kNotFound)
+      {
+        RemoveVFListenerForVF(savedSearch, folder);
+
+        // remove |folderURI
+        searchURI.Cut(index, removedFolderURI.Length() - 1);
+        // remove last '|' we added
+        searchURI.SetLength(searchURI.Length() - 1);
+
+        // if saved search is empty now, delete it.
+        if (searchURI.IsEmpty())
+        {
+          db = nullptr;
+          dbFolderInfo = nullptr;
+
+          nsCOMPtr<nsIMsgFolder> parent;
+          rv = savedSearch->GetParent(getter_AddRefs(parent));
+          NS_ENSURE_SUCCESS(rv, rv);
+
+          if (!parent)
+            continue;
+          parent->PropagateDelete(savedSearch, true, nullptr);
+        }
+        else
+        {
+        // remove leading '|' we added (or one after |folderURI, if first URI)
+          searchURI.Cut(0, 1);
+          dbFolderInfo->SetCharProperty(kSearchFolderUriProp, searchURI);
+        }
+      }
+    }
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::OnItemPropertyChanged(nsIMsgFolder *item, nsIAtom *property, const char *oldValue, const char *newValue)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::OnItemIntPropertyChanged(nsIMsgFolder *aFolder,
+                                              nsIAtom *aProperty,
+                                              int64_t oldValue,
+                                              int64_t newValue)
+{
+  if (aProperty == mFolderFlagAtom)
+  {
+    uint32_t smartFlagsChanged = (oldValue ^ newValue) &
+      (nsMsgFolderFlags::SpecialUse & ~nsMsgFolderFlags::Queue);
+    if (smartFlagsChanged)
+    {
+      if (smartFlagsChanged & newValue)
+      {
+        // if the smart folder flag was set, calling OnItemAdded will
+        // do the right thing.
+        nsCOMPtr<nsIMsgFolder> parent;
+        aFolder->GetParent(getter_AddRefs(parent));
+        return OnItemAdded(parent, aFolder);
+      }
+      RemoveFolderFromSmartFolder(aFolder, smartFlagsChanged);
+      // sent|archive flag removed, remove sub-folders from smart folder.
+      if (smartFlagsChanged & (nsMsgFolderFlags::Archive | nsMsgFolderFlags::SentMail))
+      {
+        nsCOMPtr<nsIArray> allDescendants;
+        nsresult rv = aFolder->GetDescendants(getter_AddRefs(allDescendants));
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        uint32_t cnt = 0;
+        rv = allDescendants->GetLength(&cnt);
+        NS_ENSURE_SUCCESS(rv, rv);
+
+        nsCOMPtr<nsIMsgFolder> parent;
+        for (uint32_t j = 0; j < cnt; j++)
+        {
+          nsCOMPtr<nsIMsgFolder> subFolder = do_QueryElementAt(allDescendants, j);
+          if (subFolder)
+            RemoveFolderFromSmartFolder(subFolder, smartFlagsChanged);
+        }
+      }
+    }
+  }
+  return NS_OK;
+}
+
+nsresult
+nsMsgAccountManager::RemoveFolderFromSmartFolder(nsIMsgFolder *aFolder,
+                                                 uint32_t flagsChanged)
+{
+  nsCString removedFolderURI;
+  aFolder->GetURI(removedFolderURI);
+  removedFolderURI.Insert('|', 0);
+  removedFolderURI.Append('|');
+  uint32_t flags;
+  aFolder->GetFlags(&flags);
+  NS_ASSERTION(!(flags & flagsChanged), "smart folder flag should not be set");
+  // Flag was removed. Look for smart folder based on that flag,
+  // and remove this folder from its scope.
+  nsTObserverArray<RefPtr<VirtualFolderChangeListener> >::ForwardIterator iter(m_virtualFolderListeners);
+  RefPtr<VirtualFolderChangeListener> listener;
+
+  while (iter.HasMore())
+  {
+    listener = iter.GetNext();
+    nsCOMPtr <nsIMsgDatabase> db;
+    nsCOMPtr <nsIDBFolderInfo> dbFolderInfo;
+    listener->m_virtualFolder->GetDBFolderInfoAndDB(getter_AddRefs(dbFolderInfo),
+                                                    getter_AddRefs(db));
+    if (dbFolderInfo)
+    {
+      uint32_t vfFolderFlag;
+      dbFolderInfo->GetUint32Property("searchFolderFlag", 0, & vfFolderFlag);
+      // found a smart folder over the removed flag
+      if (vfFolderFlag & flagsChanged)
+      {
+        nsCString searchURI;
+        dbFolderInfo->GetCharProperty(kSearchFolderUriProp, searchURI);
+        // "normalize" searchURI so we can search for |folderURI|.
+        searchURI.Insert('|', 0);
+        searchURI.Append('|');
+        int32_t index = searchURI.Find(removedFolderURI);
+        if (index != kNotFound)
+        {
+          RemoveVFListenerForVF(listener->m_virtualFolder, aFolder);
+
+          // remove |folderURI
+          searchURI.Cut(index, removedFolderURI.Length() - 1);
+          // remove last '|' we added
+          searchURI.SetLength(searchURI.Length() - 1);
+
+          // remove leading '|' we added (or one after |folderURI, if first URI)
+          searchURI.Cut(0, 1);
+          dbFolderInfo->SetCharProperty(kSearchFolderUriProp, searchURI);
+        }
+      }
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::OnItemBoolPropertyChanged(nsIMsgFolder *item, nsIAtom *property, bool oldValue, bool newValue)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::OnItemUnicharPropertyChanged(nsIMsgFolder *item, nsIAtom *property, const char16_t *oldValue, const char16_t *newValue)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+NS_IMETHODIMP nsMsgAccountManager::OnItemPropertyFlagChanged(nsIMsgDBHdr *item, nsIAtom *property, uint32_t oldFlag, uint32_t newFlag)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsMsgAccountManager::OnItemEvent(nsIMsgFolder *aFolder, nsIAtom *aEvent)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::FolderUriForPath(nsIFile *aLocalPath,
+                                               nsACString &aMailboxUri)
+{
+  NS_ENSURE_ARG_POINTER(aLocalPath);
+  bool equals;
+  if (m_lastPathLookedUp &&
+      NS_SUCCEEDED(aLocalPath->Equals(m_lastPathLookedUp, &equals)) && equals)
+  {
+    aMailboxUri = m_lastFolderURIForPath;
+    return NS_OK;
+  }
+  nsCOMPtr<nsIArray> folderArray;
+  nsresult rv = GetAllFolders(getter_AddRefs(folderArray));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  uint32_t count;
+  rv = folderArray->GetLength(&count);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  for (uint32_t i = 0; i < count; i++)
+  {
+    nsCOMPtr<nsIMsgFolder> folder(do_QueryElementAt(folderArray, i, &rv));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIFile> folderPath;
+    rv = folder->GetFilePath(getter_AddRefs(folderPath));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    // Check if we're equal
+    rv = folderPath->Equals(aLocalPath, &equals);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (equals)
+    {
+      rv = folder->GetURI(aMailboxUri);
+      m_lastFolderURIForPath = aMailboxUri;
+      aLocalPath->Clone(getter_AddRefs(m_lastPathLookedUp));
+      return rv;
+    }
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsMsgAccountManager::GetSortOrder(nsIMsgIncomingServer* aServer, int32_t* aSortOrder)
+{
+  NS_ENSURE_ARG_POINTER(aServer);
+  NS_ENSURE_ARG_POINTER(aSortOrder);
+
+  // If the passed in server is the default, return its sort order as 0 regardless
+  // of its server sort order.
+
+  nsCOMPtr<nsIMsgAccount> defaultAccount;
+  nsresult rv = GetDefaultAccount(getter_AddRefs(defaultAccount));
+  if (NS_SUCCEEDED(rv) && defaultAccount) {
+    nsCOMPtr<nsIMsgIncomingServer> defaultServer;
+    rv = m_defaultAccount->GetIncomingServer(getter_AddRefs(defaultServer));
+    if (NS_SUCCEEDED(rv) && defaultServer && (aServer == defaultServer)) {
+      *aSortOrder = 0;
+      return NS_OK;
+    }
+    // It is OK if there is no default account.
+  }
+
+  // This function returns the sort order by querying the server object for its
+  // sort order value and then incrementing it by the position of the server in
+  // the accounts list. This ensures that even when several accounts have the
+  // same sort order value, the returned value is not the same and keeps
+  // their relative order in the account list when and unstable sort is run
+  // on the returned sort order values.
+  int32_t sortOrder;
+  int32_t serverIndex;
+
+  rv = aServer->GetSortOrder(&sortOrder);
+  if (NS_SUCCEEDED(rv))
+    rv = FindServerIndex(aServer, &serverIndex);
+
+  if (NS_FAILED(rv)) {
+    *aSortOrder = 999999999;
+  } else {
+    *aSortOrder = sortOrder + serverIndex;
+  }
+
+  return NS_OK;
+}