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

1 files changed, 2162 insertions, 0 deletions

diff --git a/mailnews/news/src/nsNntpIncomingServer.cpp b/mailnews/news/src/nsNntpIncomingServer.cpp
new file mode 100644
index 0000000000..7c3fcad4be
--- /dev/null
+++ b/mailnews/news/src/nsNntpIncomingServer.cpp
@@ -0,0 +1,2162 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsNntpIncomingServer.h"
+#include "nsIPrefBranch.h"
+#include "nsIPrefService.h"
+#include "nsNewsFolder.h"
+#include "nsIMsgFolder.h"
+#include "nsIFile.h"
+#include "nsCOMPtr.h"
+#include "nsINntpService.h"
+#include "nsINNTPProtocol.h"
+#include "nsMsgNewsCID.h"
+#include "nsNNTPProtocol.h"
+#include "nsIDirectoryService.h"
+#include "nsMailDirServiceDefs.h"
+#include "nsMsgUtils.h"
+#include "nsIPrompt.h"
+#include "nsIStringBundle.h"
+#include "nntpCore.h"
+#include "nsIWindowWatcher.h"
+#include "nsITreeColumns.h"
+#include "nsIDOMElement.h"
+#include "nsMsgFolderFlags.h"
+#include "nsMsgI18N.h"
+#include "nsUnicharUtils.h"
+#include "nsILineInputStream.h"
+#include "nsNetUtil.h"
+#include "nsISimpleEnumerator.h"
+#include "nsMsgUtils.h"
+#include "mozilla/Services.h"
+#include "nsITreeBoxObject.h"
+
+#define INVALID_VERSION         0
+#define VALID_VERSION           2
+#define NEW_NEWS_DIR_NAME       "News"
+#define PREF_MAIL_NEWSRC_ROOT   "mail.newsrc_root"
+#define PREF_MAIL_NEWSRC_ROOT_REL "mail.newsrc_root-rel"
+#define PREF_MAILNEWS_VIEW_DEFAULT_CHARSET "mailnews.view_default_charset"
+#define HOSTINFO_FILE_NAME      "hostinfo.dat"
+
+#define NEWS_DELIMITER          '.'
+
+// this platform specific junk is so the newsrc filenames we create
+// will resemble the migrated newsrc filenames.
+#if defined(XP_UNIX)
+#define NEWSRC_FILE_PREFIX "newsrc-"
+#define NEWSRC_FILE_SUFFIX ""
+#else
+#define NEWSRC_FILE_PREFIX ""
+#define NEWSRC_FILE_SUFFIX ".rc"
+#endif /* XP_UNIX */
+
+// ###tw  This really ought to be the most
+// efficient file reading size for the current
+// operating system.
+#define HOSTINFO_FILE_BUFFER_SIZE 1024
+
+#include "nsMsgUtils.h"
+
+/**
+ * A comparator class to do cases insensitive comparisons for nsTArray.Sort()
+ */
+class nsCStringLowerCaseComparator
+{
+public:
+  bool Equals(const nsCString &a, const nsCString &b) const
+  {
+    return a.Equals(b, nsCaseInsensitiveCStringComparator());
+  }
+
+  bool LessThan(const nsCString &a, const nsCString &b) const
+  {
+    return Compare(a, b, nsCaseInsensitiveCStringComparator()) < 0;
+  }
+};
+
+static NS_DEFINE_CID(kSubscribableServerCID, NS_SUBSCRIBABLESERVER_CID);
+
+NS_IMPL_ADDREF_INHERITED(nsNntpIncomingServer, nsMsgIncomingServer)
+NS_IMPL_RELEASE_INHERITED(nsNntpIncomingServer, nsMsgIncomingServer)
+
+NS_INTERFACE_MAP_BEGIN(nsNntpIncomingServer)
+    NS_INTERFACE_MAP_ENTRY(nsINntpIncomingServer)
+    NS_INTERFACE_MAP_ENTRY(nsIUrlListener)
+    NS_INTERFACE_MAP_ENTRY(nsISubscribableServer)
+    NS_INTERFACE_MAP_ENTRY(nsITreeView)
+NS_INTERFACE_MAP_END_INHERITING(nsMsgIncomingServer)
+
+nsNntpIncomingServer::nsNntpIncomingServer()
+{
+  mNewsrcHasChanged = false;
+
+  mGetOnlyNew = true;
+
+  mHostInfoLoaded = false;
+  mHostInfoHasChanged = false;
+  mVersion = INVALID_VERSION;
+
+  mLastGroupDate = 0;
+  mUniqueId = 0;
+  mHasSeenBeginGroups = false;
+  mPostingAllowed = false;
+  mLastUpdatedTime = 0;
+
+  // these atoms are used for subscribe search
+  mSubscribedAtom = MsgGetAtom("subscribed");
+  mNntpAtom = MsgGetAtom("nntp");
+
+  // we have server wide and per group filters
+  m_canHaveFilters = true;
+
+  SetupNewsrcSaveTimer();
+}
+
+nsNntpIncomingServer::~nsNntpIncomingServer()
+{
+    mozilla::DebugOnly<nsresult> rv;
+
+    if (mNewsrcSaveTimer) {
+        mNewsrcSaveTimer->Cancel();
+        mNewsrcSaveTimer = nullptr;
+    }
+    rv = ClearInner();
+    NS_ASSERTION(NS_SUCCEEDED(rv), "ClearInner failed");
+
+    rv = CloseCachedConnections();
+    NS_ASSERTION(NS_SUCCEEDED(rv), "CloseCachedConnections failed");
+}
+
+NS_IMPL_SERVERPREF_BOOL(nsNntpIncomingServer, NotifyOn, "notify.on")
+NS_IMPL_SERVERPREF_BOOL(nsNntpIncomingServer, MarkOldRead, "mark_old_read")
+NS_IMPL_SERVERPREF_BOOL(nsNntpIncomingServer, Abbreviate, "abbreviate")
+NS_IMPL_SERVERPREF_BOOL(nsNntpIncomingServer, PushAuth, "always_authenticate")
+NS_IMPL_SERVERPREF_BOOL(nsNntpIncomingServer, SingleSignon, "singleSignon")
+NS_IMPL_SERVERPREF_INT(nsNntpIncomingServer, MaxArticles, "max_articles")
+
+nsresult
+nsNntpIncomingServer::CreateRootFolderFromUri(const nsCString &serverUri,
+                                              nsIMsgFolder **rootFolder)
+{
+  nsMsgNewsFolder *newRootFolder = new nsMsgNewsFolder;
+  if (!newRootFolder)
+    return NS_ERROR_OUT_OF_MEMORY;
+  NS_ADDREF(*rootFolder = newRootFolder);
+  newRootFolder->Init(serverUri.get());
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetNewsrcFilePath(nsIFile **aNewsrcFilePath)
+{
+  nsresult rv;
+  if (mNewsrcFilePath)
+  {
+    *aNewsrcFilePath = mNewsrcFilePath;
+    NS_IF_ADDREF(*aNewsrcFilePath);
+    return NS_OK;
+  }
+
+  rv = GetFileValue("newsrc.file-rel", "newsrc.file", aNewsrcFilePath);
+  if (NS_SUCCEEDED(rv) && *aNewsrcFilePath)
+  {
+    mNewsrcFilePath = *aNewsrcFilePath;
+    return rv;
+  }
+
+  rv = GetNewsrcRootPath(getter_AddRefs(mNewsrcFilePath));
+  if (NS_FAILED(rv)) return rv;
+
+  nsCString hostname;
+  rv = GetHostName(hostname);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsAutoCString newsrcFileName(NEWSRC_FILE_PREFIX);
+  newsrcFileName.Append(hostname);
+  newsrcFileName.Append(NEWSRC_FILE_SUFFIX);
+  rv = mNewsrcFilePath->AppendNative(newsrcFileName);
+  rv = mNewsrcFilePath->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0644);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = SetNewsrcFilePath(mNewsrcFilePath);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  NS_ADDREF(*aNewsrcFilePath = mNewsrcFilePath);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetNewsrcFilePath(nsIFile *aFile)
+{
+    NS_ENSURE_ARG_POINTER(aFile);
+
+    bool exists;
+    nsresult rv = aFile->Exists(&exists);
+    if (!exists)
+    {
+      rv = aFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0664);
+      if (NS_FAILED(rv)) return rv;
+    }
+    return SetFileValue("newsrc.file-rel", "newsrc.file", aFile);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetLocalStoreType(nsACString& type)
+{
+  type.AssignLiteral("news");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetLocalDatabaseType(nsACString& type)
+{
+  type.AssignLiteral("news");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetNewsrcRootPath(nsIFile *aNewsrcRootPath)
+{
+    NS_ENSURE_ARG(aNewsrcRootPath);
+    return NS_SetPersistentFile(PREF_MAIL_NEWSRC_ROOT_REL, PREF_MAIL_NEWSRC_ROOT, aNewsrcRootPath);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetNewsrcRootPath(nsIFile **aNewsrcRootPath)
+{
+    NS_ENSURE_ARG_POINTER(aNewsrcRootPath);
+    *aNewsrcRootPath = nullptr;
+
+    bool havePref;
+    nsresult rv = NS_GetPersistentFile(PREF_MAIL_NEWSRC_ROOT_REL,
+                              PREF_MAIL_NEWSRC_ROOT,
+                              NS_APP_NEWS_50_DIR,
+                              havePref,
+                              aNewsrcRootPath);
+
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    bool exists;
+    rv = (*aNewsrcRootPath)->Exists(&exists);
+    if (NS_SUCCEEDED(rv) && !exists)
+        rv = (*aNewsrcRootPath)->Create(nsIFile::DIRECTORY_TYPE, 0775);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (!havePref || !exists)
+    {
+        rv = NS_SetPersistentFile(PREF_MAIL_NEWSRC_ROOT_REL, PREF_MAIL_NEWSRC_ROOT, *aNewsrcRootPath);
+        NS_ASSERTION(NS_SUCCEEDED(rv), "Failed to set root dir pref.");
+    }
+    return rv;
+}
+
+/* static */ void nsNntpIncomingServer::OnNewsrcSaveTimer(nsITimer *timer, void *voidIncomingServer)
+{
+  nsNntpIncomingServer *incomingServer = (nsNntpIncomingServer*)voidIncomingServer;
+  incomingServer->WriteNewsrcFile();
+}
+
+nsresult nsNntpIncomingServer::SetupNewsrcSaveTimer()
+{
+  int64_t ms(300000);   // hard code, 5 minutes.
+  //Convert biffDelay into milliseconds
+  uint32_t timeInMSUint32 = (uint32_t)ms;
+  //Can't currently reset a timer when it's in the process of
+  //calling Notify. So, just release the timer here and create a new one.
+  if(mNewsrcSaveTimer)
+    mNewsrcSaveTimer->Cancel();
+  mNewsrcSaveTimer = do_CreateInstance("@mozilla.org/timer;1");
+  mNewsrcSaveTimer->InitWithFuncCallback(OnNewsrcSaveTimer, (void*)this, timeInMSUint32,
+                                           nsITimer::TYPE_REPEATING_SLACK);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetCharset(const nsACString & aCharset)
+{
+  return SetCharValue("charset", aCharset);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetCharset(nsACString & aCharset)
+{
+  //first we get the per-server settings mail.server.<serverkey>.charset
+  nsresult rv = GetCharValue("charset", aCharset);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  //if the per-server setting is empty,we get the default charset from
+  //mailnews.view_default_charset setting and set it as per-server preference.
+  if (aCharset.IsEmpty()) {
+    nsString defaultCharset;
+    rv = NS_GetLocalizedUnicharPreferenceWithDefault(nullptr,
+         PREF_MAILNEWS_VIEW_DEFAULT_CHARSET,
+         NS_LITERAL_STRING("ISO-8859-1"), defaultCharset);
+    NS_ENSURE_SUCCESS(rv, rv);
+    LossyCopyUTF16toASCII(defaultCharset, aCharset);
+    SetCharset(aCharset);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::WriteNewsrcFile()
+{
+    nsresult rv;
+
+    bool newsrcHasChanged;
+    rv = GetNewsrcHasChanged(&newsrcHasChanged);
+    if (NS_FAILED(rv)) return rv;
+
+#ifdef DEBUG_NEWS
+  nsCString hostname;
+  rv = GetHostName(hostname);
+  if (NS_FAILED(rv)) return rv;
+#endif /* DEBUG_NEWS */
+
+    if (newsrcHasChanged) {
+#ifdef DEBUG_NEWS
+        printf("write newsrc file for %s\n", hostname.get());
+#endif
+        nsCOMPtr <nsIFile> newsrcFile;
+        rv = GetNewsrcFilePath(getter_AddRefs(newsrcFile));
+        if (NS_FAILED(rv)) return rv;
+
+        nsCOMPtr<nsIOutputStream> newsrcStream;
+        nsresult rv = MsgNewBufferedFileOutputStream(getter_AddRefs(newsrcStream), newsrcFile, -1, 00600);
+        if (NS_FAILED(rv))
+          return rv;
+
+        nsCOMPtr<nsISimpleEnumerator> subFolders;
+        nsCOMPtr<nsIMsgFolder> rootFolder;
+        rv = GetRootFolder(getter_AddRefs(rootFolder));
+        if (NS_FAILED(rv)) return rv;
+
+        nsCOMPtr <nsIMsgNewsFolder> newsFolder = do_QueryInterface(rootFolder, &rv);
+        if (NS_FAILED(rv)) return rv;
+
+        uint32_t bytesWritten;
+        nsCString optionLines;
+        rv = newsFolder->GetOptionLines(optionLines);
+        if (NS_SUCCEEDED(rv) && !optionLines.IsEmpty()) {
+          newsrcStream->Write(optionLines.get(), optionLines.Length(), &bytesWritten);
+#ifdef DEBUG_NEWS
+               printf("option lines:\n%s", optionLines.get());
+#endif /* DEBUG_NEWS */
+        }
+#ifdef DEBUG_NEWS
+        else {
+            printf("no option lines to write out\n");
+        }
+#endif /* DEBUG_NEWS */
+
+        nsCString unsubscribedLines;
+        rv = newsFolder->GetUnsubscribedNewsgroupLines(unsubscribedLines);
+        if (NS_SUCCEEDED(rv) && !unsubscribedLines.IsEmpty()) {
+          newsrcStream->Write(unsubscribedLines.get(), unsubscribedLines.Length(), &bytesWritten);
+#ifdef DEBUG_NEWS
+               printf("unsubscribedLines:\n%s", unsubscribedLines.get());
+#endif /* DEBUG_NEWS */
+        }
+#ifdef DEBUG_NEWS
+        else {
+            printf("no unsubscribed lines to write out\n");
+        }
+#endif /* DEBUG_NEWS */
+
+        rv = rootFolder->GetSubFolders(getter_AddRefs(subFolders));
+        if (NS_FAILED(rv)) return rv;
+
+        bool moreFolders;
+
+        while (NS_SUCCEEDED(subFolders->HasMoreElements(&moreFolders)) &&
+               moreFolders) {
+            nsCOMPtr<nsISupports> child;
+            rv = subFolders->GetNext(getter_AddRefs(child));
+            if (NS_SUCCEEDED(rv) && child) {
+                newsFolder = do_QueryInterface(child, &rv);
+                if (NS_SUCCEEDED(rv) && newsFolder) {
+                    nsCString newsrcLine;
+                    rv = newsFolder->GetNewsrcLine(newsrcLine);
+                    if (NS_SUCCEEDED(rv) && !newsrcLine.IsEmpty()) {
+                        // write the line to the newsrc file
+                        newsrcStream->Write(newsrcLine.get(), newsrcLine.Length(), &bytesWritten);
+                    }
+                }
+            }
+        }
+
+        newsrcStream->Close();
+
+        rv = SetNewsrcHasChanged(false);
+        if (NS_FAILED(rv)) return rv;
+    }
+#ifdef DEBUG_NEWS
+    else {
+        printf("no need to write newsrc file for %s, it was not dirty\n", (hostname.get()));
+    }
+#endif /* DEBUG_NEWS */
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetNewsrcHasChanged(bool aNewsrcHasChanged)
+{
+    mNewsrcHasChanged = aNewsrcHasChanged;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetNewsrcHasChanged(bool *aNewsrcHasChanged)
+{
+    if (!aNewsrcHasChanged) return NS_ERROR_NULL_POINTER;
+
+    *aNewsrcHasChanged = mNewsrcHasChanged;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::CloseCachedConnections()
+{
+  nsresult rv;
+  nsCOMPtr<nsINNTPProtocol> connection;
+
+  // iterate through the connection cache and close the connections.
+  int32_t cnt = mConnectionCache.Count();
+
+  for (int32_t i = 0; i < cnt; ++i)
+  {
+    connection = mConnectionCache[0];
+    if (connection)
+    {
+      rv = connection->CloseConnection();
+      // We need to do this instead of RemoveObjectAt(0) because the
+      // above call will likely cause the object to be removed from the
+      // array anyway
+      mConnectionCache.RemoveObject(connection);
+    }
+  }
+
+  rv = WriteNewsrcFile();
+  if (NS_FAILED(rv)) return rv;
+
+  if (!mGetOnlyNew && !mHostInfoLoaded)
+  {
+    rv = WriteHostInfoFile();
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetMaximumConnectionsNumber(int32_t *aMaxConnections)
+{
+  NS_ENSURE_ARG_POINTER(aMaxConnections);
+
+  nsresult rv = GetIntValue("max_cached_connections", aMaxConnections);
+  // Get our maximum connection count. We need at least 1. If the value is 0,
+  // we use the default. If it's negative, we treat that as 1.
+  if (NS_SUCCEEDED(rv) && *aMaxConnections > 0)
+    return NS_OK;
+
+  *aMaxConnections = (NS_FAILED(rv) || (*aMaxConnections == 0)) ? 2 : 1;
+  (void)SetMaximumConnectionsNumber(*aMaxConnections);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetMaximumConnectionsNumber(int32_t aMaxConnections)
+{
+  return SetIntValue("max_cached_connections", aMaxConnections);
+}
+
+bool
+nsNntpIncomingServer::ConnectionTimeOut(nsINNTPProtocol* aConnection)
+{
+    bool retVal = false;
+    if (!aConnection)
+      return retVal;
+
+    PRTime lastActiveTimeStamp;
+    if (NS_FAILED(aConnection->GetLastActiveTimeStamp(&lastActiveTimeStamp)))
+      return retVal;
+
+    if (PR_Now() - lastActiveTimeStamp >= PRTime(170) * PR_USEC_PER_SEC)
+    {
+#ifdef DEBUG_seth
+      printf("XXX connection timed out, close it, and remove it from the connection cache\n");
+#endif
+      aConnection->CloseConnection();
+      mConnectionCache.RemoveObject(aConnection);
+      retVal = true;
+    }
+    return retVal;
+}
+
+
+nsresult
+nsNntpIncomingServer::CreateProtocolInstance(nsINNTPProtocol ** aNntpConnection, nsIURI *url,
+                                             nsIMsgWindow *aMsgWindow)
+{
+  // create a new connection and add it to the connection cache
+  // we may need to flag the protocol connection as busy so we don't get
+  // a race
+  // condition where someone else goes through this code
+  nsNNTPProtocol *protocolInstance = new nsNNTPProtocol(this, url, aMsgWindow);
+  if (!protocolInstance)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  nsresult rv = protocolInstance->QueryInterface(NS_GET_IID(nsINNTPProtocol), (void **) aNntpConnection);
+  // take the protocol instance and add it to the connectionCache
+  if (NS_SUCCEEDED(rv) && *aNntpConnection)
+    mConnectionCache.AppendObject(*aNntpConnection);
+  return rv;
+}
+
+
+nsresult
+nsNntpIncomingServer::GetNntpConnection(nsIURI * aUri, nsIMsgWindow *aMsgWindow,
+                                        nsINNTPProtocol ** aNntpConnection)
+{
+  int32_t maxConnections;
+  (void)GetMaximumConnectionsNumber(&maxConnections);
+
+  // Find a non-busy connection
+  nsCOMPtr<nsINNTPProtocol> connection;
+  int32_t cnt = mConnectionCache.Count();
+  for (int32_t i = 0; i < cnt; i++)
+  {
+    connection = mConnectionCache[i];
+    if (connection)
+    {
+      bool isBusy;
+      connection->GetIsBusy(&isBusy);
+      if (!isBusy)
+        break;
+      connection = nullptr;
+    }
+  }
+
+  if (ConnectionTimeOut(connection))
+  {
+    connection = nullptr;
+    // We have one less connection, since we closed this one.
+    --cnt;
+  }
+
+  if (connection)
+  {
+    NS_IF_ADDREF(*aNntpConnection = connection);
+    connection->SetIsCachedConnection(true);
+  }
+  else if (cnt < maxConnections)
+  {
+    // We have room for another connection. Create this connection and return
+    // it to the caller.
+    nsresult rv = CreateProtocolInstance(aNntpConnection, aUri, aMsgWindow);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+  else
+  {
+    // We maxed out our connection count. The caller must therefore enqueue the
+    // call.
+    *aNntpConnection = nullptr;
+    return NS_OK;
+  }
+
+  // Initialize the URI here and now.
+  return (*aNntpConnection)->Initialize(aUri, aMsgWindow);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetNntpChannel(nsIURI *aURI, nsIMsgWindow *aMsgWindow,
+                                     nsIChannel **aChannel)
+{
+  NS_ENSURE_ARG_POINTER(aChannel);
+
+  nsCOMPtr<nsINNTPProtocol> protocol;
+  nsresult rv = GetNntpConnection(aURI, aMsgWindow, getter_AddRefs(protocol));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (protocol)
+    return CallQueryInterface(protocol, aChannel);
+
+  // No protocol? We need our mock channel.
+  nsNntpMockChannel *channel = new nsNntpMockChannel(aURI, aMsgWindow);
+  if (!channel)
+    return NS_ERROR_OUT_OF_MEMORY;
+  NS_ADDREF(*aChannel = channel);
+
+  m_queuedChannels.AppendElement(channel);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::LoadNewsUrl(nsIURI *aURI, nsIMsgWindow *aMsgWindow,
+                                  nsISupports *aConsumer)
+{
+  nsCOMPtr<nsINNTPProtocol> protocol;
+  nsresult rv = GetNntpConnection(aURI, aMsgWindow, getter_AddRefs(protocol));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (protocol)
+    return protocol->LoadNewsUrl(aURI, aConsumer);
+
+  // No protocol? We need our mock channel.
+  nsNntpMockChannel *channel = new nsNntpMockChannel(aURI, aMsgWindow,
+                                                     aConsumer);
+  if (!channel)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  m_queuedChannels.AppendElement(channel);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::PrepareForNextUrl(nsNNTPProtocol *aConnection)
+{
+  NS_ENSURE_ARG(aConnection);
+
+  // Start the connection on the next URL in the queue. If it can't get a URL to
+  // work, drop that URL (the channel will handle failure notification) and move
+  // on.
+  while (m_queuedChannels.Length() > 0)
+  {
+    RefPtr<nsNntpMockChannel> channel = m_queuedChannels[0];
+    m_queuedChannels.RemoveElementAt(0);
+    nsresult rv = channel->AttachNNTPConnection(*aConnection);
+    // If this succeeded, the connection is now running the URL.
+    if (NS_SUCCEEDED(rv))
+      return NS_OK;
+  }
+  
+  // No queued uris.
+  return NS_OK;
+}
+
+/* void RemoveConnection (in nsINNTPProtocol aNntpConnection); */
+NS_IMETHODIMP nsNntpIncomingServer::RemoveConnection(nsINNTPProtocol *aNntpConnection)
+{
+  if (aNntpConnection)
+    mConnectionCache.RemoveObject(aNntpConnection);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::PerformExpand(nsIMsgWindow *aMsgWindow)
+{
+  // Get news.update_unread_on_expand pref
+  nsresult rv;
+  bool updateUnreadOnExpand = true;
+  nsCOMPtr<nsIPrefBranch> prefBranch = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv))
+    prefBranch->GetBoolPref("news.update_unread_on_expand", &updateUnreadOnExpand);
+
+  // Only if news.update_unread_on_expand is true do we update the unread counts
+  if (updateUnreadOnExpand)
+    return DownloadMail(aMsgWindow);
+  return NS_OK;
+}
+
+nsresult
+nsNntpIncomingServer::DownloadMail(nsIMsgWindow *aMsgWindow)
+{
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  nsresult rv = GetRootFolder(getter_AddRefs(rootFolder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsISimpleEnumerator> groups;
+  rv = rootFolder->GetSubFolders(getter_AddRefs(groups));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool hasNext;
+  while (NS_SUCCEEDED(rv = groups->HasMoreElements(&hasNext)) && hasNext)
+  {
+    nsCOMPtr<nsISupports> nextGroup;
+    rv = groups->GetNext(getter_AddRefs(nextGroup));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIMsgFolder> group(do_QueryInterface(nextGroup));
+    rv = group->GetNewMessages(aMsgWindow, nullptr);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::DisplaySubscribedGroup(nsIMsgNewsFolder *aMsgFolder, int32_t aFirstMessage, int32_t aLastMessage, int32_t aTotalMessages)
+{
+  nsresult rv;
+
+  if (!aMsgFolder) return NS_ERROR_NULL_POINTER;
+#ifdef DEBUG_NEWS
+  printf("DisplaySubscribedGroup(...,%ld,%ld,%ld)\n",aFirstMessage,aLastMessage,aTotalMessages);
+#endif
+  rv = aMsgFolder->UpdateSummaryFromNNTPInfo(aFirstMessage,aLastMessage,aTotalMessages);
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::PerformBiff(nsIMsgWindow *aMsgWindow)
+{
+  // Biff will force a download of the messages. If the user doesn't want this
+  // (e.g., there is a lot of high-traffic newsgroups), the better option is to
+  // just ignore biff.
+  return PerformExpand(aMsgWindow);
+}
+
+NS_IMETHODIMP nsNntpIncomingServer::GetServerRequiresPasswordForBiff(bool *aServerRequiresPasswordForBiff)
+{
+  NS_ENSURE_ARG_POINTER(aServerRequiresPasswordForBiff);
+  *aServerRequiresPasswordForBiff = false;  // for news, biff is getting the unread counts
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::OnStartRunningUrl(nsIURI *url)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::OnStopRunningUrl(nsIURI *url, nsresult exitCode)
+{
+  nsresult rv;
+  rv = UpdateSubscribed();
+  if (NS_FAILED(rv)) return rv;
+
+  rv = StopPopulating(mMsgWindow);
+  if (NS_FAILED(rv)) return rv;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::ContainsNewsgroup(const nsACString &aName,
+                                        bool *containsGroup)
+{
+    NS_ENSURE_ARG_POINTER(containsGroup);
+    NS_ENSURE_FALSE(aName.IsEmpty(), NS_ERROR_FAILURE);
+
+    if (mSubscribedNewsgroups.Length() == 0)
+    {
+      // If this is empty, we may need to discover folders
+      nsCOMPtr<nsIMsgFolder> rootFolder;
+      GetRootFolder(getter_AddRefs(rootFolder));
+      if (rootFolder)
+      {
+        nsCOMPtr<nsISimpleEnumerator> subfolders;
+        rootFolder->GetSubFolders(getter_AddRefs(subfolders));
+      }
+    }
+    nsAutoCString unescapedName;
+    MsgUnescapeString(aName, 0, unescapedName);
+    *containsGroup = mSubscribedNewsgroups.Contains(aName);
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SubscribeToNewsgroup(const nsACString &aName)
+{
+    NS_ASSERTION(!aName.IsEmpty(), "no name");
+    NS_ENSURE_FALSE(aName.IsEmpty(), NS_ERROR_FAILURE);
+
+    // If we already have this newsgroup, do nothing and report success.
+    bool containsGroup = false;
+    nsresult rv = ContainsNewsgroup(aName, &containsGroup);
+    NS_ENSURE_SUCCESS(rv, rv);
+    if (containsGroup)
+      return NS_OK;
+
+    nsCOMPtr<nsIMsgFolder> msgfolder;
+    rv = GetRootMsgFolder(getter_AddRefs(msgfolder));
+    NS_ENSURE_SUCCESS(rv, rv);
+    NS_ENSURE_TRUE(msgfolder, NS_ERROR_FAILURE);
+
+    return msgfolder->CreateSubfolder(NS_ConvertUTF8toUTF16(aName), nullptr);
+}
+
+bool
+writeGroupToHostInfoFile(nsCString &aElement, void *aData)
+{
+    nsIOutputStream *stream;
+    stream = (nsIOutputStream *)aData;
+    NS_ASSERTION(stream, "no stream");
+    if (!stream) {
+        // stop, something is bad.
+        return false;
+    }
+    return true;
+}
+
+void nsNntpIncomingServer::WriteLine(nsIOutputStream *stream, nsCString &str)
+{
+  uint32_t bytesWritten;
+  str.Append(MSG_LINEBREAK);
+  stream->Write(str.get(), str.Length(), &bytesWritten);
+}
+nsresult
+nsNntpIncomingServer::WriteHostInfoFile()
+{
+  if (!mHostInfoHasChanged)
+    return NS_OK;
+
+  mLastUpdatedTime = uint32_t(PR_Now() / PR_USEC_PER_SEC);
+
+  nsCString hostname;
+  nsresult rv = GetHostName(hostname);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  if (!mHostInfoFile)
+    return NS_ERROR_UNEXPECTED;
+  nsCOMPtr<nsIOutputStream> hostInfoStream;
+  rv = MsgNewBufferedFileOutputStream(getter_AddRefs(hostInfoStream), mHostInfoFile, -1, 00600);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // XXX TODO: missing some formatting, see the 4.x code
+  nsAutoCString header("# News host information file.");
+  WriteLine(hostInfoStream, header);
+  header.Assign("# This is a generated file!  Do not edit.");
+  WriteLine(hostInfoStream, header);
+  header.Truncate();
+  WriteLine(hostInfoStream, header);
+  nsAutoCString version("version=");
+  version.AppendInt(VALID_VERSION);
+  WriteLine(hostInfoStream, version);
+  nsAutoCString newsrcname("newsrcname=");
+  newsrcname.Append(hostname);
+  WriteLine(hostInfoStream, hostname);
+  nsAutoCString dateStr("lastgroupdate=");
+  dateStr.AppendInt(mLastUpdatedTime);
+  WriteLine(hostInfoStream, dateStr);
+  dateStr = "uniqueid=";
+  dateStr.AppendInt(mUniqueId);
+  WriteLine(hostInfoStream, dateStr);
+  header.Assign(MSG_LINEBREAK"begingroups");
+  WriteLine(hostInfoStream, header);
+
+  // XXX TODO: sort groups first?
+  uint32_t length = mGroupsOnServer.Length();
+  for (uint32_t i = 0; i < length; ++i)
+  {
+    uint32_t bytesWritten;
+    hostInfoStream->Write(mGroupsOnServer[i].get(), mGroupsOnServer[i].Length(),
+                          &bytesWritten);
+    hostInfoStream->Write(MSG_LINEBREAK, MSG_LINEBREAK_LEN, &bytesWritten);
+  }
+
+  hostInfoStream->Close();
+  mHostInfoHasChanged = false;
+  return NS_OK;
+}
+
+nsresult
+nsNntpIncomingServer::LoadHostInfoFile()
+{
+  nsresult rv;
+  // we haven't loaded it yet
+  mHostInfoLoaded = false;
+
+  rv = GetLocalPath(getter_AddRefs(mHostInfoFile));
+  if (NS_FAILED(rv)) return rv;
+  if (!mHostInfoFile) return NS_ERROR_FAILURE;
+
+  rv = mHostInfoFile->AppendNative(NS_LITERAL_CSTRING(HOSTINFO_FILE_NAME));
+  if (NS_FAILED(rv)) return rv;
+
+  bool exists;
+  rv = mHostInfoFile->Exists(&exists);
+  if (NS_FAILED(rv)) return rv;
+
+  // it is ok if the hostinfo.dat file does not exist.
+  if (!exists) return NS_OK;
+
+  nsCOMPtr<nsIInputStream> fileStream;
+  rv = NS_NewLocalFileInputStream(getter_AddRefs(fileStream), mHostInfoFile);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsILineInputStream> lineInputStream(do_QueryInterface(fileStream, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool more = true;
+  nsCString line;
+
+  while (more && NS_SUCCEEDED(rv))
+  {
+    rv = lineInputStream->ReadLine(line, &more);
+    if (line.IsEmpty())
+      continue;
+    HandleLine(line.get(), line.Length());
+  }
+  mHasSeenBeginGroups = false;
+  fileStream->Close();
+
+  return UpdateSubscribed();
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::StartPopulatingWithUri(nsIMsgWindow *aMsgWindow, bool aForceToServer, const char *uri)
+{
+#ifdef DEBUG_seth
+  printf("StartPopulatingWithUri(%s)\n",uri);
+#endif
+
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  rv = mInner->StartPopulatingWithUri(aMsgWindow, aForceToServer, uri);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = StopPopulating(mMsgWindow);
+  if (NS_FAILED(rv)) return rv;
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SubscribeCleanup()
+{
+  nsresult rv = NS_OK;
+    rv = ClearInner();
+    NS_ENSURE_SUCCESS(rv,rv);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::StartPopulating(nsIMsgWindow *aMsgWindow, bool aForceToServer, bool aGetOnlyNew)
+{
+  mMsgWindow = aMsgWindow;
+
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = mInner->StartPopulating(aMsgWindow, aForceToServer, aGetOnlyNew);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = SetDelimiter(NEWS_DELIMITER);
+  if (NS_FAILED(rv)) return rv;
+
+  rv = SetShowFullName(true);
+  if (NS_FAILED(rv)) return rv;
+
+  nsCOMPtr<nsINntpService> nntpService = do_GetService(NS_NNTPSERVICE_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  mHostInfoLoaded = false;
+  mVersion = INVALID_VERSION;
+  mGroupsOnServer.Clear();
+  mGetOnlyNew = aGetOnlyNew;
+
+  if (!aForceToServer) {
+  rv = LoadHostInfoFile();
+    if (NS_FAILED(rv)) return rv;
+  }
+
+  // mHostInfoLoaded can be false if we failed to load anything
+  if (aForceToServer || !mHostInfoLoaded || (mVersion != VALID_VERSION)) {
+    // set these to true, so when we are done and we call WriteHostInfoFile()
+    // we'll write out to hostinfo.dat
+  mHostInfoHasChanged = true;
+  mVersion = VALID_VERSION;
+
+  mGroupsOnServer.Clear();
+  rv = nntpService->GetListOfGroupsOnServer(this, aMsgWindow, aGetOnlyNew);
+  if (NS_FAILED(rv)) return rv;
+  }
+  else {
+  rv = StopPopulating(aMsgWindow);
+  if (NS_FAILED(rv)) return rv;
+  }
+
+  return NS_OK;
+}
+
+/**
+ * This method is the entry point for |nsNNTPProtocol| class. |aName| is now
+ * encoded in the serverside character encoding, but we need to handle
+ * newsgroup names in UTF-8 internally, So we convert |aName| to
+ * UTF-8 here for later use.
+ **/
+NS_IMETHODIMP
+nsNntpIncomingServer::AddNewsgroupToList(const char *aName)
+{
+    nsresult rv;
+
+    nsAutoString newsgroupName;
+    nsAutoCString dataCharset;
+    rv = GetCharset(dataCharset);
+    NS_ENSURE_SUCCESS(rv,rv);
+
+    rv = nsMsgI18NConvertToUnicode(dataCharset.get(),
+                                   nsDependentCString(aName),
+                                   newsgroupName);
+#ifdef DEBUG_jungshik
+    NS_ASSERTION(NS_SUCCEEDED(rv), "newsgroup name conversion failed");
+#endif
+    if (NS_FAILED(rv)) {
+        CopyASCIItoUTF16(nsDependentCString(aName), newsgroupName);
+    }
+
+    rv = AddTo(NS_ConvertUTF16toUTF8(newsgroupName),
+               false, true, true);
+    if (NS_FAILED(rv)) return rv;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetIncomingServer(nsIMsgIncomingServer *aServer)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->SetIncomingServer(aServer);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetShowFullName(bool showFullName)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->SetShowFullName(showFullName);
+}
+
+nsresult
+nsNntpIncomingServer::ClearInner()
+{
+  nsresult rv = NS_OK;
+
+  if (mInner) {
+    rv = mInner->SetSubscribeListener(nullptr);
+    NS_ENSURE_SUCCESS(rv,rv);
+
+    rv = mInner->SetIncomingServer(nullptr);
+    NS_ENSURE_SUCCESS(rv,rv);
+
+    mInner = nullptr;
+  }
+  return NS_OK;
+}
+
+nsresult
+nsNntpIncomingServer::EnsureInner()
+{
+  nsresult rv = NS_OK;
+
+  if (mInner)
+    return NS_OK;
+
+  mInner = do_CreateInstance(kSubscribableServerCID,&rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+  if (!mInner)
+    return NS_ERROR_FAILURE;
+
+  rv = SetIncomingServer(this);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetDelimiter(char *aDelimiter)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->GetDelimiter(aDelimiter);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetDelimiter(char aDelimiter)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->SetDelimiter(aDelimiter);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetAsSubscribed(const nsACString &path)
+{
+  mTempSubscribed.AppendElement(path);
+  if (mGetOnlyNew && (!mGroupsOnServer.Contains(path)))
+    return NS_OK;
+
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->SetAsSubscribed(path);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::UpdateSubscribed()
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  mTempSubscribed.Clear();
+  uint32_t length = mSubscribedNewsgroups.Length();
+  for (uint32_t i = 0; i < length; ++i)
+    SetAsSubscribed(mSubscribedNewsgroups[i]);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::AddTo(const nsACString &aName, bool addAsSubscribed,
+                            bool aSubscribable, bool changeIfExists)
+{
+  NS_ASSERTION(MsgIsUTF8(aName), "Non-UTF-8 newsgroup name");
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = AddGroupOnServer(aName);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = mInner->AddTo(aName, addAsSubscribed, aSubscribable, changeIfExists);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::StopPopulating(nsIMsgWindow *aMsgWindow)
+{
+  nsresult rv = NS_OK;
+
+  nsCOMPtr<nsISubscribeListener> listener;
+  rv = GetSubscribeListener(getter_AddRefs(listener));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  if (!listener)
+    return NS_ERROR_FAILURE;
+
+  rv = listener->OnDonePopulating();
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  rv = mInner->StopPopulating(aMsgWindow);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  if (!mGetOnlyNew && !mHostInfoLoaded)
+  {
+    rv = WriteHostInfoFile();
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+
+  // XXX TODO: when do I set this to null?
+  // rv = ClearInner();
+  // NS_ENSURE_SUCCESS(rv,rv);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetSubscribeListener(nsISubscribeListener *aListener)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->SetSubscribeListener(aListener);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetSubscribeListener(nsISubscribeListener **aListener)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->GetSubscribeListener(aListener);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::Subscribe(const char16_t *aUnicharName)
+{
+  return SubscribeToNewsgroup(NS_ConvertUTF16toUTF8(aUnicharName));
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::Unsubscribe(const char16_t *aUnicharName)
+{
+  NS_ENSURE_ARG_POINTER(aUnicharName);
+
+  nsresult rv;
+
+  nsCOMPtr <nsIMsgFolder> serverFolder;
+  rv = GetRootMsgFolder(getter_AddRefs(serverFolder));
+  if (NS_FAILED(rv))
+    return rv;
+
+  if (!serverFolder)
+    return NS_ERROR_FAILURE;
+
+  // to handle non-ASCII newsgroup names, we store them internally as escaped.
+  // so we need to escape and encode the name, in order to find it.
+  nsAutoCString escapedName;
+  rv = NS_MsgEscapeEncodeURLPath(nsDependentString(aUnicharName), escapedName);
+
+  nsCOMPtr <nsIMsgFolder> newsgroupFolder;
+  rv = serverFolder->FindSubFolder(escapedName,
+                                   getter_AddRefs(newsgroupFolder));
+
+  if (NS_FAILED(rv))
+    return rv;
+
+  if (!newsgroupFolder)
+    return NS_ERROR_FAILURE;
+
+  rv = serverFolder->PropagateDelete(newsgroupFolder, true /* delete storage */, nullptr);
+  if (NS_FAILED(rv))
+    return rv;
+
+  // since we've unsubscribed to a newsgroup, the newsrc needs to be written out
+  rv = SetNewsrcHasChanged(true);
+  if (NS_FAILED(rv))
+    return rv;
+
+  return NS_OK;
+}
+
+nsresult
+nsNntpIncomingServer::HandleLine(const char* line, uint32_t line_size)
+{
+  NS_ASSERTION(line, "line is null");
+  if (!line)
+    return NS_OK;
+
+  // skip blank lines and comments
+  if (line[0] == '#' || line[0] == '\0')
+    return NS_OK;
+  // XXX TODO: make this truly const, maybe pass in an nsCString &
+
+  if (mHasSeenBeginGroups) {
+    // v1 hostinfo files had additional data fields delimited by commas.
+    // with v2 hostinfo files, the additional data fields are removed.
+    char *commaPos = (char *) PL_strchr(line,',');
+    if (commaPos) *commaPos = 0;
+
+        // newsrc entries are all in UTF-8
+#ifdef DEBUG_jungshik
+    NS_ASSERTION(MsgIsUTF8(nsDependentCString(line)), "newsrc line is not utf-8");
+#endif
+    nsresult rv = AddTo(nsDependentCString(line), false, true, true);
+    NS_ASSERTION(NS_SUCCEEDED(rv),"failed to add line");
+    if (NS_SUCCEEDED(rv)) {
+      // since we've seen one group, we can claim we've loaded the
+      // hostinfo file
+      mHostInfoLoaded = true;
+    }
+  }
+  else {
+    if (PL_strncmp(line,"begingroups", 11) == 0) {
+      mHasSeenBeginGroups = true;
+    }
+    char*equalPos = (char *) PL_strchr(line, '=');
+    if (equalPos) {
+      *equalPos++ = '\0';
+      if (PL_strcmp(line, "lastgroupdate") == 0) {
+        mLastUpdatedTime = strtoul(equalPos, nullptr, 10);
+      } else if (PL_strcmp(line, "uniqueid") == 0) {
+        mUniqueId = strtol(equalPos, nullptr, 16);
+      } else if (PL_strcmp(line, "version") == 0) {
+        mVersion = strtol(equalPos, nullptr, 16);
+      }
+    }
+  }
+
+  return NS_OK;
+}
+
+nsresult
+nsNntpIncomingServer::AddGroupOnServer(const nsACString &aName)
+{
+  mGroupsOnServer.AppendElement(aName);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::AddNewsgroup(const nsAString &aName)
+{
+  // handle duplicates?
+  mSubscribedNewsgroups.AppendElement(NS_ConvertUTF16toUTF8(aName));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::RemoveNewsgroup(const nsAString &aName)
+{
+  // handle duplicates?
+  mSubscribedNewsgroups.RemoveElement(NS_ConvertUTF16toUTF8(aName));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetState(const nsACString &path, bool state,
+                               bool *stateChanged)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = mInner->SetState(path, state, stateChanged);
+  if (*stateChanged) {
+    if (state)
+      mTempSubscribed.AppendElement(path);
+    else
+      mTempSubscribed.RemoveElement(path);
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::HasChildren(const nsACString &path, bool *aHasChildren)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->HasChildren(path, aHasChildren);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsSubscribed(const nsACString &path,
+                                   bool *aIsSubscribed)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->IsSubscribed(path, aIsSubscribed);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsSubscribable(const nsACString &path,
+                                     bool *aIsSubscribable)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->IsSubscribable(path, aIsSubscribable);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetLeafName(const nsACString &path, nsAString &aLeafName)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->GetLeafName(path, aLeafName);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetFirstChildURI(const nsACString &path, nsACString &aResult)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->GetFirstChildURI(path, aResult);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetChildren(const nsACString &aPath,
+                                  nsISimpleEnumerator **aResult)
+{
+  nsresult rv = EnsureInner();
+  NS_ENSURE_SUCCESS(rv,rv);
+  return mInner->GetChildren(aPath, aResult);
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::CommitSubscribeChanges()
+{
+  // we force the newrc to be dirty, so it will get written out when
+  // we call WriteNewsrcFile()
+  nsresult rv = SetNewsrcHasChanged(true);
+  NS_ENSURE_SUCCESS(rv,rv);
+  return WriteNewsrcFile();
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::ForgetPassword()
+{
+  // clear password of root folder (for the news account)
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  nsresult rv = GetRootFolder(getter_AddRefs(rootFolder));
+  NS_ENSURE_SUCCESS(rv,rv);
+  if (!rootFolder) return NS_ERROR_FAILURE;
+
+  nsCOMPtr <nsIMsgNewsFolder> newsFolder = do_QueryInterface(rootFolder, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+  if (!newsFolder) return NS_ERROR_FAILURE;
+
+  rv = newsFolder->ForgetAuthenticationCredentials();
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  // clear password of all child folders
+  nsCOMPtr<nsISimpleEnumerator> subFolders;
+
+  rv = rootFolder->GetSubFolders(getter_AddRefs(subFolders));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  bool moreFolders = false;
+
+  nsresult return_rv = NS_OK;
+
+  while (NS_SUCCEEDED(subFolders->HasMoreElements(&moreFolders)) &&
+         moreFolders) {
+    nsCOMPtr<nsISupports> child;
+    rv = subFolders->GetNext(getter_AddRefs(child));
+    if (NS_SUCCEEDED(rv) && child) {
+      newsFolder = do_QueryInterface(child, &rv);
+      if (NS_SUCCEEDED(rv) && newsFolder) {
+        rv = newsFolder->ForgetAuthenticationCredentials();
+        if (NS_FAILED(rv))
+          return_rv = rv;
+      }
+      else {
+        return_rv = NS_ERROR_FAILURE;
+      }
+    }
+  }
+
+  return return_rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetSupportsExtensions(bool *aSupportsExtensions)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetSupportsExtensions(bool aSupportsExtensions)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::AddExtension(const char *extension)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::QueryExtension(const char *extension, bool *result)
+{
+#ifdef DEBUG_seth
+  printf("no extension support yet\n");
+#endif
+  *result = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetPostingAllowed(bool *aPostingAllowed)
+{
+  *aPostingAllowed = mPostingAllowed;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetPostingAllowed(bool aPostingAllowed)
+{
+  mPostingAllowed = aPostingAllowed;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetLastUpdatedTime(uint32_t *aLastUpdatedTime)
+{
+  *aLastUpdatedTime = mLastUpdatedTime;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetLastUpdatedTime(uint32_t aLastUpdatedTime)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::AddPropertyForGet(const char *name, const char *value)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::QueryPropertyForGet(const char *name, char **value)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::AddSearchableGroup(const nsAString &name)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::QuerySearchableGroup(const nsAString &name, bool *result)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::AddSearchableHeader(const char *name)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::QuerySearchableHeader(const char *name, bool *result)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::FindGroup(const nsACString &name, nsIMsgNewsFolder **result)
+{
+  NS_ENSURE_ARG_POINTER(result);
+
+  nsresult rv;
+  nsCOMPtr <nsIMsgFolder> serverFolder;
+  rv = GetRootMsgFolder(getter_AddRefs(serverFolder));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  if (!serverFolder) return NS_ERROR_FAILURE;
+
+  // Escape the name for using FindSubFolder
+  nsAutoCString escapedName;
+  rv = MsgEscapeString(name, nsINetUtil::ESCAPE_URL_PATH, escapedName);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr <nsIMsgFolder> subFolder;
+  rv = serverFolder->FindSubFolder(escapedName, getter_AddRefs(subFolder));
+  NS_ENSURE_SUCCESS(rv,rv);
+  if (!subFolder) return NS_ERROR_FAILURE;
+
+  rv = subFolder->QueryInterface(NS_GET_IID(nsIMsgNewsFolder), (void**)result);
+  NS_ENSURE_SUCCESS(rv,rv);
+  if (!*result) return NS_ERROR_FAILURE;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetFirstGroupNeedingExtraInfo(nsACString &result)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetGroupNeedsExtraInfo(const nsACString &name,
+                                             bool needsExtraInfo)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GroupNotFound(nsIMsgWindow *aMsgWindow,
+                                    const nsAString &aName, bool aOpening)
+{
+  nsresult rv;
+  nsCOMPtr <nsIPrompt> prompt;
+
+  if (aMsgWindow) {
+    rv = aMsgWindow->GetPromptDialog(getter_AddRefs(prompt));
+    NS_ASSERTION(NS_SUCCEEDED(rv), "no prompt from the msg window");
+  }
+
+  if (!prompt) {
+    nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
+    rv = wwatch->GetNewPrompter(nullptr, getter_AddRefs(prompt));
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+
+  nsCOMPtr <nsIStringBundleService> bundleService =
+    mozilla::services::GetStringBundleService();
+  NS_ENSURE_TRUE(bundleService, NS_ERROR_UNEXPECTED);
+
+  nsCOMPtr <nsIStringBundle> bundle;
+  rv = bundleService->CreateBundle(NEWS_MSGS_URL, getter_AddRefs(bundle));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCString hostname;
+  rv = GetRealHostName(hostname);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  NS_ConvertUTF8toUTF16 hostStr(hostname);
+
+  nsString groupName(aName);
+  const char16_t *formatStrings[2] = { groupName.get(), hostStr.get() };
+  nsString confirmText;
+  rv = bundle->FormatStringFromName(
+                    u"autoUnsubscribeText",
+                    formatStrings, 2,
+                    getter_Copies(confirmText));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  bool confirmResult = false;
+  rv = prompt->Confirm(nullptr, confirmText.get(), &confirmResult);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  if (confirmResult) {
+    rv = Unsubscribe(groupName.get());
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetPrettyNameForGroup(const nsAString &name,
+                                            const nsAString &prettyName)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetCanSearchMessages(bool *canSearchMessages)
+{
+  NS_ENSURE_ARG_POINTER(canSearchMessages);
+  *canSearchMessages = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetOfflineSupportLevel(int32_t *aSupportLevel)
+{
+  NS_ENSURE_ARG_POINTER(aSupportLevel);
+  nsresult rv;
+
+  rv = GetIntValue("offline_support_level", aSupportLevel);
+  if (*aSupportLevel != OFFLINE_SUPPORT_LEVEL_UNDEFINED) return rv;
+
+  // set default value
+  *aSupportLevel = OFFLINE_SUPPORT_LEVEL_EXTENDED;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetDefaultCopiesAndFoldersPrefsToServer(bool *aCopiesAndFoldersOnServer)
+{
+  NS_ENSURE_ARG_POINTER(aCopiesAndFoldersOnServer);
+
+  /**
+   * When a news account is created, the copies and folder prefs for the
+   * associated identity don't point to folders on the server.
+   * This makes sense, since there is no "Drafts" folder on a news server.
+   * They'll point to the ones on "Local Folders"
+   */
+
+  *aCopiesAndFoldersOnServer = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetCanCreateFoldersOnServer(bool *aCanCreateFoldersOnServer)
+{
+  NS_ENSURE_ARG_POINTER(aCanCreateFoldersOnServer);
+
+  // No folder creation on news servers. Return false.
+  *aCanCreateFoldersOnServer = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetSearchValue(const nsAString &aSearchValue)
+{
+  nsCString searchValue = NS_ConvertUTF16toUTF8(aSearchValue);
+  MsgCompressWhitespace(searchValue);
+
+  if (mTree) {
+    mTree->BeginUpdateBatch();
+    mTree->RowCountChanged(0, -static_cast<int32_t>(mSubscribeSearchResult.Length()));
+  }
+
+  nsTArray<nsCString> searchStringParts;
+  if (!searchValue.IsEmpty())
+    ParseString(searchValue, ' ', searchStringParts);
+
+  mSubscribeSearchResult.Clear();
+  uint32_t length = mGroupsOnServer.Length();
+  for (uint32_t i = 0; i < length; i++)
+  {
+    // check that all parts of the search string occur
+    bool found = true;
+    for (uint32_t j = 0; j < searchStringParts.Length(); ++j) {
+      if (MsgFind(mGroupsOnServer[i], searchStringParts[j], true, 0) == kNotFound) {
+        found = false;
+        break;
+      }
+    }
+
+    if (found)
+      mSubscribeSearchResult.AppendElement(mGroupsOnServer[i]);
+  }
+
+  nsCStringLowerCaseComparator comparator;
+  mSubscribeSearchResult.Sort(comparator);
+
+  if (mTree)
+  {
+    mTree->RowCountChanged(0, mSubscribeSearchResult.Length());
+    mTree->EndUpdateBatch();
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetSupportsSubscribeSearch(bool *retVal)
+{
+  *retVal = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetRowCount(int32_t *aRowCount)
+{
+  *aRowCount = mSubscribeSearchResult.Length();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetSelection(nsITreeSelection * *aSelection)
+{
+  *aSelection = mTreeSelection;
+  NS_IF_ADDREF(*aSelection);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetSelection(nsITreeSelection * aSelection)
+{
+  mTreeSelection = aSelection;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetRowProperties(int32_t index, nsAString& properties)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetCellProperties(int32_t row, nsITreeColumn* col, nsAString& properties)
+{
+  if (!IsValidRow(row))
+    return NS_ERROR_UNEXPECTED;
+
+  NS_ENSURE_ARG_POINTER(col);
+
+  const char16_t* colID;
+  col->GetIdConst(&colID);
+  if (colID[0] == 's') {
+    // if <name> is in our temporary list of subscribed groups
+    // add the "subscribed" property so the check mark shows up
+    // in the "subscribedCol"
+    if (mSearchResultSortDescending)
+      row = mSubscribeSearchResult.Length() - 1 - row;
+    if (mTempSubscribed.Contains(mSubscribeSearchResult.ElementAt(row))) {
+      properties.AssignLiteral("subscribed");
+    }
+  }
+  else if (colID[0] == 'n') {
+    // add the "nntp" property to the "nameCol"
+    // so we get the news folder icon in the search view
+    properties.AssignLiteral("nntp");
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetColumnProperties(nsITreeColumn* col, nsAString& properties)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsContainer(int32_t index, bool *_retval)
+{
+  *_retval = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsContainerOpen(int32_t index, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsContainerEmpty(int32_t index, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsSeparator(int32_t index, bool *_retval)
+{
+  *_retval = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsSorted(bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::CanDrop(int32_t index,
+                              int32_t orientation,
+                              nsIDOMDataTransfer *dataTransfer,
+                              bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::Drop(int32_t row,
+                           int32_t orientation,
+                           nsIDOMDataTransfer *dataTransfer)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetParentIndex(int32_t rowIndex, int32_t *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::HasNextSibling(int32_t rowIndex, int32_t afterIndex, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetLevel(int32_t index, int32_t *_retval)
+{
+  *_retval = 0;
+  return NS_OK;
+}
+
+bool
+nsNntpIncomingServer::IsValidRow(int32_t row)
+{
+  return ((row >= 0) && (row < (int32_t)mSubscribeSearchResult.Length()));
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetImageSrc(int32_t row, nsITreeColumn* col, nsAString& _retval)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetProgressMode(int32_t row, nsITreeColumn* col, int32_t* _retval)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetCellValue(int32_t row, nsITreeColumn* col, nsAString& _retval)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetCellText(int32_t row, nsITreeColumn* col, nsAString& _retval)
+{
+  if (!IsValidRow(row))
+    return NS_ERROR_UNEXPECTED;
+
+  NS_ENSURE_ARG_POINTER(col);
+
+  const char16_t* colID;
+  col->GetIdConst(&colID);
+
+  nsresult rv = NS_OK;
+  if (colID[0] == 'n') {
+    nsAutoCString str;
+    if (mSearchResultSortDescending)
+      row = mSubscribeSearchResult.Length() - 1 - row;
+    // some servers have newsgroup names that are non ASCII.  we store
+    // those as escaped. unescape here so the UI is consistent
+    rv = NS_MsgDecodeUnescapeURLPath(mSubscribeSearchResult.ElementAt(row), _retval);
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetTree(nsITreeBoxObject *tree)
+{
+  mTree = tree;
+  if (!tree)
+    return NS_OK;
+
+  nsCOMPtr<nsITreeColumns> cols;
+  tree->GetColumns(getter_AddRefs(cols));
+  if (!cols)
+    return NS_OK;
+
+  nsCOMPtr<nsITreeColumn> col;
+  cols->GetKeyColumn(getter_AddRefs(col));
+  if (!col)
+    return NS_OK;
+
+  nsCOMPtr<nsIDOMElement> element;
+  col->GetElement(getter_AddRefs(element));
+  if (!element)
+    return NS_OK;
+
+  nsAutoString dir;
+  element->GetAttribute(NS_LITERAL_STRING("sortDirection"), dir);
+  mSearchResultSortDescending = dir.EqualsLiteral("descending");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::ToggleOpenState(int32_t index)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::CycleHeader(nsITreeColumn* col)
+{
+  NS_ENSURE_ARG_POINTER(col);
+
+  bool cycler;
+  col->GetCycler(&cycler);
+  if (!cycler) {
+    NS_NAMED_LITERAL_STRING(dir, "sortDirection");
+    nsCOMPtr<nsIDOMElement> element;
+    col->GetElement(getter_AddRefs(element));
+    mSearchResultSortDescending = !mSearchResultSortDescending;
+    element->SetAttribute(dir, mSearchResultSortDescending ?
+      NS_LITERAL_STRING("descending") : NS_LITERAL_STRING("ascending"));
+    mTree->Invalidate();
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SelectionChanged()
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::CycleCell(int32_t row, nsITreeColumn* col)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsEditable(int32_t row, nsITreeColumn* col, bool *_retval)
+{
+  *_retval = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::IsSelectable(int32_t row, nsITreeColumn* col, bool *_retval)
+{
+  *_retval = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetCellValue(int32_t row, nsITreeColumn* col, const nsAString& value)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetCellText(int32_t row, nsITreeColumn* col, const nsAString& value)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::PerformAction(const char16_t *action)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::PerformActionOnRow(const char16_t *action, int32_t row)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::PerformActionOnCell(const char16_t *action, int32_t row, nsITreeColumn* col)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetCanFileMessagesOnServer(bool *aCanFileMessagesOnServer)
+{
+  NS_ENSURE_ARG_POINTER(aCanFileMessagesOnServer);
+
+  // No folder creation on news servers. Return false.
+  *aCanFileMessagesOnServer = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetFilterScope(nsMsgSearchScopeValue *filterScope)
+{
+  NS_ENSURE_ARG_POINTER(filterScope);
+
+  *filterScope = nsMsgSearchScope::newsFilter;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetSearchScope(nsMsgSearchScopeValue *searchScope)
+{
+  NS_ENSURE_ARG_POINTER(searchScope);
+
+  if (WeAreOffline()) {
+    // This value is set to the localNewsBody scope to be compatible with
+    // the legacy default value.
+    *searchScope = nsMsgSearchScope::localNewsBody;
+  }
+  else {
+    *searchScope = nsMsgSearchScope::news;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetSocketType(int32_t *aSocketType)
+{
+  NS_ENSURE_ARG_POINTER(aSocketType);
+  if (!mPrefBranch)
+    return NS_ERROR_NOT_INITIALIZED;
+
+  nsresult rv = mPrefBranch->GetIntPref("socketType", aSocketType);
+  if (NS_FAILED(rv))
+  {
+    if (!mDefPrefBranch)
+      return NS_ERROR_NOT_INITIALIZED;
+    rv = mDefPrefBranch->GetIntPref("socketType", aSocketType);
+    if (NS_FAILED(rv))
+      *aSocketType = nsMsgSocketType::plain;
+  }
+
+  // nsMsgIncomingServer::GetSocketType migrates old isSecure to socketType
+  // style for mail. Unfortunately, a bug caused news socketType 0 to be stored
+  // in the prefs even for isSecure true, so the migration wouldn't happen :(
+
+  // Now that we know the socket, make sure isSecure true + socketType 0
+  // doesn't mix. Migrate if that's the case here.
+  if (*aSocketType == nsMsgSocketType::plain)
+  {
+    bool isSecure = false;
+    nsresult rv2 = mPrefBranch->GetBoolPref("isSecure", &isSecure);
+    if (NS_SUCCEEDED(rv2) && isSecure)
+    {
+      *aSocketType = nsMsgSocketType::SSL;
+      // Don't call virtual method in case overrides call GetSocketType.
+      nsMsgIncomingServer::SetSocketType(*aSocketType);
+    }
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::SetSocketType(int32_t aSocketType)
+{
+  if (!mPrefBranch)
+    return NS_ERROR_NOT_INITIALIZED;
+  nsresult rv = nsMsgIncomingServer::SetSocketType(aSocketType);
+  if (NS_SUCCEEDED(rv))
+  {
+    bool isSecure = false;
+    if (NS_SUCCEEDED(mPrefBranch->GetBoolPref("isSecure", &isSecure)))
+    {
+      // Must keep isSecure in sync since we migrate based on it... if it's set.
+      rv = mPrefBranch->SetBoolPref("isSecure",
+                                    aSocketType == nsMsgSocketType::SSL);
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::OnUserOrHostNameChanged(const nsACString& oldName,
+                                              const nsACString& newName,
+                                              bool hostnameChanged)
+{
+  nsresult rv;
+  // 1. Do common things in the base class.
+  rv = nsMsgIncomingServer::OnUserOrHostNameChanged(oldName, newName, hostnameChanged);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  // 2. Remove file hostinfo.dat so that the new subscribe
+  //    list will be reloaded from the new server.
+  nsCOMPtr <nsIFile> hostInfoFile;
+  rv = GetLocalPath(getter_AddRefs(hostInfoFile));
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = hostInfoFile->AppendNative(NS_LITERAL_CSTRING(HOSTINFO_FILE_NAME));
+  NS_ENSURE_SUCCESS(rv, rv);
+  hostInfoFile->Remove(false);
+
+  // 3.Unsubscribe and then subscribe the existing groups to clean up the article numbers
+  //   in the rc file (this is because the old and new servers may maintain different
+  //   numbers for the same articles if both servers handle the same groups).
+  nsCOMPtr <nsIMsgFolder> serverFolder;
+  rv = GetRootMsgFolder(getter_AddRefs(serverFolder));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr<nsISimpleEnumerator> subFolders;
+  rv = serverFolder->GetSubFolders(getter_AddRefs(subFolders));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsTArray<nsString> groupList;
+  nsString folderName;
+
+  // Prepare the group list
+  bool hasMore;
+  while (NS_SUCCEEDED(subFolders->HasMoreElements(&hasMore)) && hasMore)
+  {
+    nsCOMPtr<nsISupports> item;
+    subFolders->GetNext(getter_AddRefs(item));
+    nsCOMPtr<nsIMsgFolder> newsgroupFolder(do_QueryInterface(item));
+    if (!newsgroupFolder)
+      continue;
+
+    rv = newsgroupFolder->GetName(folderName);
+    NS_ENSURE_SUCCESS(rv,rv);
+    groupList.AppendElement(folderName);
+  }
+
+  // If nothing subscribed then we're done.
+  if (groupList.Length() == 0)
+    return NS_OK;
+
+  // Now unsubscribe & subscribe.
+  uint32_t i;
+  uint32_t cnt = groupList.Length();
+  nsAutoCString cname;
+  for (i = 0; i < cnt; i++)
+  {
+    // unsubscribe.
+    rv = Unsubscribe(groupList[i].get());
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+
+  for (i = 0; i < cnt; i++)
+  {
+    // subscribe.
+    rv = SubscribeToNewsgroup(NS_ConvertUTF16toUTF8(groupList[i]));
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+
+  // Force updating the rc file.
+  return CommitSubscribeChanges();
+}
+
+NS_IMETHODIMP
+nsNntpIncomingServer::GetSortOrder(int32_t* aSortOrder)
+{
+  NS_ENSURE_ARG_POINTER(aSortOrder);
+  *aSortOrder = 500000000;
+  return NS_OK;
+}