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

mailnews/local/src/moz.build

@@ -0,0 +1,36 @@
+# vim: set filetype=python:
+# 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/.
+
+SOURCES += [
+    'nsLocalMailFolder.cpp',
+    'nsLocalUndoTxn.cpp',
+    'nsLocalUtils.cpp',
+    'nsMailboxProtocol.cpp',
+    'nsMailboxServer.cpp',
+    'nsMailboxService.cpp',
+    'nsMailboxUrl.cpp',
+    'nsMsgBrkMBoxStore.cpp',
+    'nsMsgLocalStoreUtils.cpp',
+    'nsMsgMaildirStore.cpp',
+    'nsNoIncomingServer.cpp',
+    'nsNoneService.cpp',
+    'nsParseMailbox.cpp',
+    'nsPop3IncomingServer.cpp',
+    'nsPop3Protocol.cpp',
+    'nsPop3Service.cpp',
+    'nsPop3Sink.cpp',
+    'nsPop3URL.cpp',
+    'nsRssIncomingServer.cpp',
+    'nsRssService.cpp',
+]
+
+if CONFIG['MOZ_MOVEMAIL']:
+    SOURCES += [
+        'nsMovemailIncomingServer.cpp',
+        'nsMovemailService.cpp',
+    ]
+
+FINAL_LIBRARY = 'mail'
+

mailnews/local/src/nsLocalMailFolder.h

@@ -0,0 +1,276 @@
+/* -*- 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/. */
+
+/**
+   Interface for representing Local Mail folders.
+*/
+
+#ifndef nsMsgLocalMailFolder_h__
+#define nsMsgLocalMailFolder_h__
+
+#include "mozilla/Attributes.h"
+#include "nsMsgDBFolder.h" /* include the interface we are going to support */
+#include "nsAutoPtr.h"
+#include "nsICopyMessageListener.h"
+#include "nsIFileStreams.h"
+#include "nsIPop3IncomingServer.h"  // need this for an interface ID
+#include "nsMsgTxn.h"
+#include "nsIMsgMessageService.h"
+#include "nsIMsgParseMailMsgState.h"
+#include "nsITransactionManager.h"
+#include "nsIMsgLocalMailFolder.h"
+#include "nsISeekableStream.h"
+#include "nsIMutableArray.h"
+#include "nsLocalUndoTxn.h"
+
+#define COPY_BUFFER_SIZE 16384
+
+class nsParseMailMessageState;
+
+struct nsLocalMailCopyState
+{
+  nsLocalMailCopyState();
+  virtual ~nsLocalMailCopyState();
+  
+  nsCOMPtr <nsIOutputStream> m_fileStream;
+  nsCOMPtr<nsIMsgPluggableStore> m_msgStore;
+  nsCOMPtr<nsISupports> m_srcSupport;
+  /// Source nsIMsgDBHdr instances.
+  nsCOMPtr<nsIArray> m_messages;
+  /// Destination nsIMsgDBHdr instances.
+  nsCOMPtr<nsIMutableArray> m_destMessages;
+  RefPtr<nsLocalMoveCopyMsgTxn> m_undoMsgTxn;
+  nsCOMPtr<nsIMsgDBHdr> m_message; // current copy message
+  nsMsgMessageFlagType m_flags; // current copy message flags
+  RefPtr<nsParseMailMessageState> m_parseMsgState;
+  nsCOMPtr<nsIMsgCopyServiceListener> m_listener;
+  nsCOMPtr<nsIMsgWindow> m_msgWindow;
+  nsCOMPtr<nsIMsgDatabase> m_destDB;
+
+  // for displaying status;
+  nsCOMPtr <nsIMsgStatusFeedback> m_statusFeedback;
+  nsCOMPtr <nsIStringBundle> m_stringBundle;
+  int64_t m_lastProgressTime;
+
+  nsMsgKey m_curDstKey;
+  uint32_t m_curCopyIndex;
+  nsCOMPtr <nsIMsgMessageService> m_messageService;
+  /// The number of messages in m_messages.
+  uint32_t m_totalMsgCount;
+  char *m_dataBuffer;
+  uint32_t m_dataBufferSize;
+  uint32_t m_leftOver;
+  bool m_isMove;
+  bool m_isFolder;   // isFolder move/copy
+  bool m_dummyEnvelopeNeeded;
+  bool m_copyingMultipleMessages;
+  bool m_fromLineSeen;
+  bool m_allowUndo;
+  bool m_writeFailed;
+  bool m_notifyFolderLoaded;
+  bool m_wholeMsgInStream;
+  nsCString    m_newMsgKeywords;
+  nsCOMPtr <nsIMsgDBHdr> m_newHdr;
+};
+
+struct nsLocalFolderScanState
+{
+  nsLocalFolderScanState();
+  ~nsLocalFolderScanState();
+
+  nsCOMPtr<nsIInputStream> m_inputStream;
+  nsCOMPtr<nsISeekableStream> m_seekableStream;
+  nsCOMPtr<nsIMsgPluggableStore> m_msgStore;
+  nsCString m_header;
+  nsCString m_accountKey;
+  const char *m_uidl; // memory is owned by m_header
+  // false if we need a new input stream for each message
+  bool m_streamReusable;
+};
+
+class nsMsgLocalMailFolder : public nsMsgDBFolder,
+                             public nsIMsgLocalMailFolder,
+                             public nsICopyMessageListener
+{
+public:
+  nsMsgLocalMailFolder(void);
+  NS_DECL_NSICOPYMESSAGELISTENER
+  NS_DECL_NSIMSGLOCALMAILFOLDER
+  NS_DECL_NSIJUNKMAILCLASSIFICATIONLISTENER
+  NS_DECL_ISUPPORTS_INHERITED
+  // nsIRDFResource methods:
+  NS_IMETHOD Init(const char *aURI) override;
+
+  // nsIUrlListener methods
+  NS_IMETHOD OnStartRunningUrl(nsIURI * aUrl) override;
+  NS_IMETHOD OnStopRunningUrl(nsIURI * aUrl, nsresult aExitCode) override;
+
+  // nsIMsgFolder methods:
+  NS_IMETHOD GetSubFolders(nsISimpleEnumerator* *aResult) override;
+  NS_IMETHOD GetMsgDatabase(nsIMsgDatabase **aMsgDatabase) override;
+
+  NS_IMETHOD OnAnnouncerGoingAway(nsIDBChangeAnnouncer *instigator) override;
+  NS_IMETHOD GetMessages(nsISimpleEnumerator **result) override;
+  NS_IMETHOD UpdateFolder(nsIMsgWindow *aWindow) override;
+
+  NS_IMETHOD CreateSubfolder(const nsAString& folderName ,nsIMsgWindow *msgWindow) override;
+
+  NS_IMETHOD Compact(nsIUrlListener *aListener, nsIMsgWindow *aMsgWindow) override;
+  NS_IMETHOD CompactAll(nsIUrlListener *aListener, nsIMsgWindow *aMsgWindow, bool aCompactOfflineAlso) override;
+  NS_IMETHOD EmptyTrash(nsIMsgWindow *msgWindow, nsIUrlListener *aListener) override;
+  NS_IMETHOD Delete () override;
+  NS_IMETHOD DeleteSubFolders(nsIArray *folders, nsIMsgWindow *msgWindow) override;
+  NS_IMETHOD CreateStorageIfMissing(nsIUrlListener* urlListener) override;
+  NS_IMETHOD Rename (const nsAString& aNewName, nsIMsgWindow *msgWindow) override;
+  NS_IMETHOD RenameSubFolders (nsIMsgWindow *msgWindow, nsIMsgFolder *oldFolder) override;
+
+  NS_IMETHOD GetPrettyName(nsAString& prettyName) override; // Override of the base, for top-level mail folder
+  NS_IMETHOD SetPrettyName(const nsAString& aName) override;
+
+  NS_IMETHOD GetFolderURL(nsACString& url) override;
+
+  NS_IMETHOD GetManyHeadersToDownload(bool *retval) override;
+
+  NS_IMETHOD GetDeletable (bool *deletable) override;
+  NS_IMETHOD GetSizeOnDisk(int64_t *size) override;
+
+  NS_IMETHOD GetDBFolderInfoAndDB(nsIDBFolderInfo **folderInfo, nsIMsgDatabase **db) override;
+
+  NS_IMETHOD DeleteMessages(nsIArray *messages, 
+                      nsIMsgWindow *msgWindow, bool
+                      deleteStorage, bool isMove,
+                      nsIMsgCopyServiceListener* listener, bool allowUndo) override;
+  NS_IMETHOD CopyMessages(nsIMsgFolder *srcFolder, nsIArray* messages,
+                          bool isMove, nsIMsgWindow *msgWindow,
+                          nsIMsgCopyServiceListener* listener, bool isFolder, bool allowUndo) override;
+  NS_IMETHOD CopyFolder(nsIMsgFolder *srcFolder, bool isMoveFolder, nsIMsgWindow *msgWindow,
+                          nsIMsgCopyServiceListener* listener) override;
+  NS_IMETHOD CopyFileMessage(nsIFile* aFile, nsIMsgDBHdr* msgToReplace,
+                             bool isDraftOrTemplate, 
+                             uint32_t newMsgFlags,
+                             const nsACString &aNewMsgKeywords,
+                             nsIMsgWindow *msgWindow,
+                             nsIMsgCopyServiceListener* listener) override;
+
+  NS_IMETHOD AddMessageDispositionState(nsIMsgDBHdr *aMessage, nsMsgDispositionState aDispositionFlag) override;
+  NS_IMETHOD MarkMessagesRead(nsIArray *aMessages, bool aMarkRead) override;
+  NS_IMETHOD MarkMessagesFlagged(nsIArray *aMessages, bool aMarkFlagged) override;
+  NS_IMETHOD MarkAllMessagesRead(nsIMsgWindow *aMsgWindow) override;
+  NS_IMETHOD MarkThreadRead(nsIMsgThread *thread) override;
+  NS_IMETHOD GetNewMessages(nsIMsgWindow *aWindow, nsIUrlListener *aListener) override;
+  NS_IMETHOD NotifyCompactCompleted() override;
+  NS_IMETHOD Shutdown(bool shutdownChildren) override;
+
+  NS_IMETHOD WriteToFolderCacheElem(nsIMsgFolderCacheElement *element) override;
+  NS_IMETHOD ReadFromFolderCacheElem(nsIMsgFolderCacheElement *element) override;
+
+  NS_IMETHOD GetName(nsAString& aName) override;
+
+  // Used when headers_only is TRUE
+  NS_IMETHOD DownloadMessagesForOffline(nsIArray *aMessages, nsIMsgWindow *aWindow) override;
+  NS_IMETHOD FetchMsgPreviewText(nsMsgKey *aKeysToFetch, uint32_t aNumKeys,
+                                                 bool aLocalOnly, nsIUrlListener *aUrlListener, 
+                                                 bool *aAsyncResults) override;
+  NS_IMETHOD AddKeywordsToMessages(nsIArray *aMessages, const nsACString& aKeywords) override;
+  NS_IMETHOD RemoveKeywordsFromMessages(nsIArray *aMessages, const nsACString& aKeywords) override;
+  NS_IMETHOD GetIncomingServerType(nsACString& serverType) override;
+
+protected:
+  virtual ~nsMsgLocalMailFolder();
+  nsresult CreateChildFromURI(const nsCString &uri, nsIMsgFolder **folder) override;
+  nsresult CopyFolderAcrossServer(nsIMsgFolder *srcFolder, nsIMsgWindow *msgWindow,nsIMsgCopyServiceListener* listener);
+
+  nsresult CreateSubFolders(nsIFile *path);
+  nsresult GetTrashFolder(nsIMsgFolder** trashFolder);
+  nsresult WriteStartOfNewMessage();
+
+  // CreateSubfolder, but without the nsIMsgFolderListener notification
+  nsresult CreateSubfolderInternal(const nsAString& folderName, nsIMsgWindow *msgWindow,
+                                   nsIMsgFolder **aNewFolder);
+
+  nsresult IsChildOfTrash(bool *result);
+  nsresult RecursiveSetDeleteIsMoveTrash(bool bVal);
+  nsresult ConfirmFolderDeletion(nsIMsgWindow *aMsgWindow, nsIMsgFolder *aFolder, bool *aResult);
+
+  nsresult DeleteMessage(nsISupports *message, nsIMsgWindow *msgWindow,
+                   bool deleteStorage, bool commit);
+  nsresult GetDatabase() override;
+  // this will set mDatabase, if successful. It will also create a .msf file
+  // for an empty local mail folder. It will leave invalid DBs in place, and
+  // return an error.
+  nsresult OpenDatabase();
+
+  // copy message helper
+  nsresult DisplayMoveCopyStatusMsg();
+
+  nsresult CopyMessageTo(nsISupports *message, nsIMsgFolder *dstFolder,
+                         nsIMsgWindow *msgWindow, bool isMove);
+
+  /**
+   * Checks if there's room in the target folder to copy message(s) into.
+   * If not, handles alerting the user, and sending the copy notifications.
+   */
+  bool CheckIfSpaceForCopy(nsIMsgWindow *msgWindow,
+                             nsIMsgFolder *srcFolder,
+                             nsISupports *srcSupports,
+                             bool isMove,
+                             int64_t totalMsgSize);
+
+  // copy multiple messages at a time from this folder
+  nsresult CopyMessagesTo(nsIArray *messages, nsTArray<nsMsgKey> &keyArray,
+                                       nsIMsgWindow *aMsgWindow,
+                                       nsIMsgFolder *dstFolder,
+                                       bool isMove);
+  nsresult InitCopyState(nsISupports* aSupport, nsIArray* messages,
+                         bool isMove, nsIMsgCopyServiceListener* listener, nsIMsgWindow *msgWindow, bool isMoveFolder, bool allowUndo);
+  nsresult InitCopyMsgHdrAndFileStream();
+  // preserve message metadata when moving or copying messages
+  void CopyPropertiesToMsgHdr(nsIMsgDBHdr *destHdr, nsIMsgDBHdr *srcHdr, bool isMove);
+  virtual nsresult CreateBaseMessageURI(const nsACString& aURI) override;
+  nsresult ChangeKeywordForMessages(nsIArray *aMessages, const nsACString& aKeyword, bool add);
+  bool GetDeleteFromServerOnMove();
+  void CopyHdrPropertiesWithSkipList(nsIMsgDBHdr *destHdr,
+                                     nsIMsgDBHdr *srcHdr,
+                                     const nsCString &skipList);
+
+protected:
+  nsLocalMailCopyState *mCopyState; //We only allow one of these at a time
+  nsCString mType;
+  bool mHaveReadNameFromDB;
+  bool mInitialized;
+  bool mCheckForNewMessagesAfterParsing;
+  bool m_parsingFolder;
+  nsCOMPtr<nsIUrlListener> mReparseListener;
+  nsTArray<nsMsgKey> mSpamKeysToMove;
+  nsresult setSubfolderFlag(const nsAString& aFolderName, uint32_t flags);
+
+  // state variables for DownloadMessagesForOffline
+
+  // Do we notify the owning window of Delete's before or after
+  // Adding the new msg?
+#define DOWNLOAD_NOTIFY_FIRST 1
+#define DOWNLOAD_NOTIFY_LAST  2
+
+#ifndef DOWNLOAD_NOTIFY_STYLE
+#define DOWNLOAD_NOTIFY_STYLE DOWNLOAD_NOTIFY_FIRST
+#endif
+
+  nsCOMArray<nsIMsgDBHdr> mDownloadMessages;
+  nsCOMPtr<nsIMsgWindow> mDownloadWindow;
+  nsMsgKey mDownloadSelectKey;
+  uint32_t mDownloadState;
+#define DOWNLOAD_STATE_NONE 0
+#define DOWNLOAD_STATE_INITED 1
+#define DOWNLOAD_STATE_GOTMSG 2
+#define DOWNLOAD_STATE_DIDSEL 3
+
+#if DOWNLOAD_NOTIFY_STYLE == DOWNLOAD_NOTIFY_LAST
+  nsMsgKey mDownloadOldKey;
+  nsMsgKey mDownloadOldParent;
+  uint32_t mDownloadOldFlags;
+#endif
+};
+
+#endif // nsMsgLocalMailFolder_h__

mailnews/local/src/nsLocalUndoTxn.cpp

@@ -0,0 +1,560 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h"
+#include "nsIMsgHdr.h"
+#include "nsLocalUndoTxn.h"
+#include "nsImapCore.h"
+#include "nsMsgImapCID.h"
+#include "nsIImapService.h"
+#include "nsIUrlListener.h"
+#include "nsIMsgLocalMailFolder.h"
+#include "nsIMsgMailSession.h"
+#include "nsIMsgFolderNotificationService.h"
+#include "nsThreadUtils.h"
+#include "nsIMsgDatabase.h"
+#include "nsIMutableArray.h"
+#include "nsServiceManagerUtils.h"
+#include "nsComponentManagerUtils.h"
+#include "nsMsgUtils.h"
+
+NS_IMPL_ISUPPORTS_INHERITED(nsLocalMoveCopyMsgTxn, nsMsgTxn, nsIFolderListener)
+
+nsLocalMoveCopyMsgTxn::nsLocalMoveCopyMsgTxn()  : m_srcIsImap4(false),
+  m_canUndelete(false)
+{
+}
+
+nsLocalMoveCopyMsgTxn::~nsLocalMoveCopyMsgTxn()
+{
+}
+
+nsresult
+nsLocalMoveCopyMsgTxn::Init(nsIMsgFolder* srcFolder, nsIMsgFolder* dstFolder,
+                            bool isMove)
+{
+    nsresult rv;
+    rv = SetSrcFolder(srcFolder);
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = SetDstFolder(dstFolder);
+    NS_ENSURE_SUCCESS(rv, rv);
+    m_isMove = isMove;
+
+    mUndoFolderListener = nullptr;
+
+    nsCString protocolType;
+    rv = srcFolder->GetURI(protocolType);
+    protocolType.SetLength(protocolType.FindChar(':'));
+    if (MsgLowerCaseEqualsLiteral(protocolType, "imap"))
+      m_srcIsImap4 = true;
+    return nsMsgTxn::Init();
+}
+nsresult 
+nsLocalMoveCopyMsgTxn::GetSrcIsImap(bool *isImap)
+{
+  *isImap = m_srcIsImap4;
+  return NS_OK;
+}
+nsresult
+nsLocalMoveCopyMsgTxn::SetSrcFolder(nsIMsgFolder* srcFolder)
+{
+  nsresult rv = NS_ERROR_NULL_POINTER;
+  if (srcFolder)
+    m_srcFolder = do_GetWeakReference(srcFolder, &rv);
+  return rv;
+}
+
+nsresult
+nsLocalMoveCopyMsgTxn::SetDstFolder(nsIMsgFolder* dstFolder)
+{
+  nsresult rv = NS_ERROR_NULL_POINTER;
+  if (dstFolder)
+    m_dstFolder = do_GetWeakReference(dstFolder, &rv);
+  return rv;
+}
+
+nsresult
+nsLocalMoveCopyMsgTxn::AddSrcKey(nsMsgKey aKey)
+{
+  m_srcKeyArray.AppendElement(aKey);
+  return NS_OK;
+}
+
+nsresult
+nsLocalMoveCopyMsgTxn::AddSrcStatusOffset(uint32_t aStatusOffset)
+{
+  m_srcStatusOffsetArray.AppendElement(aStatusOffset);
+  return NS_OK;
+}
+
+
+nsresult
+nsLocalMoveCopyMsgTxn::AddDstKey(nsMsgKey aKey)
+{
+  m_dstKeyArray.AppendElement(aKey);
+  return NS_OK;
+}
+
+nsresult
+nsLocalMoveCopyMsgTxn::AddDstMsgSize(uint32_t msgSize)
+{
+    m_dstSizeArray.AppendElement(msgSize);
+    return NS_OK;
+}
+
+nsresult
+nsLocalMoveCopyMsgTxn::UndoImapDeleteFlag(nsIMsgFolder* folder, 
+                                          nsTArray<nsMsgKey>& keyArray,
+                                          bool deleteFlag)
+{
+  nsresult rv = NS_ERROR_FAILURE;
+  if (m_srcIsImap4)
+  {
+    nsCOMPtr<nsIImapService> imapService = do_GetService(NS_IMAPSERVICE_CONTRACTID, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr<nsIUrlListener> urlListener;
+    nsCString msgIds;
+    uint32_t i, count = keyArray.Length();
+    urlListener = do_QueryInterface(folder, &rv);
+    for (i=0; i < count; i++)
+    {
+      if (!msgIds.IsEmpty())
+          msgIds.Append(',');
+      msgIds.AppendInt((int32_t) keyArray[i]);
+    }
+    // This is to make sure that we are in the selected state
+    // when executing the imap url; we don't want to load the
+    // folder so use lite select to do the trick
+    rv = imapService->LiteSelectFolder(folder,
+                                       urlListener, nullptr, nullptr);
+    if (!deleteFlag)
+        rv =imapService->AddMessageFlags(folder,
+                                         urlListener, nullptr,
+                                         msgIds,
+                                         kImapMsgDeletedFlag,
+                                         true);
+    else
+        rv = imapService->SubtractMessageFlags(folder,
+                                               urlListener, nullptr,
+                                               msgIds,
+                                               kImapMsgDeletedFlag,
+                                               true);
+    if (NS_SUCCEEDED(rv) && m_msgWindow)
+        folder->UpdateFolder(m_msgWindow);
+    rv = NS_OK; // always return NS_OK to indicate that the src is imap
+  }
+  else
+    rv = NS_ERROR_FAILURE;
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalMoveCopyMsgTxn::UndoTransaction()
+{
+  nsresult rv;
+  nsCOMPtr<nsIMsgDatabase> dstDB;
+  
+  nsCOMPtr<nsIMsgFolder> dstFolder = do_QueryReferent(m_dstFolder, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  nsCOMPtr<nsIMsgLocalMailFolder> dstlocalMailFolder = do_QueryReferent(m_dstFolder, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  dstlocalMailFolder->GetDatabaseWOReparse(getter_AddRefs(dstDB));
+
+  if (!dstDB)
+  {
+    // This will listen for the db reparse finishing, and the corresponding
+    // FolderLoadedNotification. When it gets that, it will then call
+    // UndoTransactionInternal.
+    mUndoFolderListener = new nsLocalUndoFolderListener(this, dstFolder);
+    if (!mUndoFolderListener)
+      return NS_ERROR_OUT_OF_MEMORY; 
+    NS_ADDREF(mUndoFolderListener);
+    
+    nsCOMPtr<nsIMsgMailSession> mailSession = 
+      do_GetService(NS_MSGMAILSESSION_CONTRACTID, &rv); 
+    NS_ENSURE_SUCCESS(rv,rv);
+    
+    rv = mailSession->AddFolderListener(mUndoFolderListener, nsIFolderListener::event);
+    NS_ENSURE_SUCCESS(rv,rv);
+    
+    rv = dstFolder->GetMsgDatabase(getter_AddRefs(dstDB));
+    NS_ENSURE_SUCCESS(rv,rv);
+  }
+  else
+    rv = UndoTransactionInternal();
+  return rv;
+}
+
+nsresult 
+nsLocalMoveCopyMsgTxn::UndoTransactionInternal()
+{
+  nsresult rv = NS_ERROR_FAILURE;
+
+  if (mUndoFolderListener)
+  {
+    nsCOMPtr<nsIMsgMailSession> mailSession = 
+      do_GetService(NS_MSGMAILSESSION_CONTRACTID, &rv); 
+    NS_ENSURE_SUCCESS(rv,rv);
+    
+    rv = mailSession->RemoveFolderListener(mUndoFolderListener);
+    NS_ENSURE_SUCCESS(rv,rv);
+    
+    NS_RELEASE(mUndoFolderListener);
+    mUndoFolderListener = nullptr;
+  }
+
+  nsCOMPtr<nsIMsgDatabase> srcDB;
+  nsCOMPtr<nsIMsgDatabase> dstDB;
+  nsCOMPtr<nsIMsgFolder> srcFolder = do_QueryReferent(m_srcFolder, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+  
+  nsCOMPtr<nsIMsgFolder> dstFolder = do_QueryReferent(m_dstFolder, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+  
+  rv = srcFolder->GetMsgDatabase(getter_AddRefs(srcDB));
+  if(NS_FAILED(rv)) return rv;
+
+  rv = dstFolder->GetMsgDatabase(getter_AddRefs(dstDB));
+  if (NS_FAILED(rv)) return rv;
+
+  uint32_t count = m_srcKeyArray.Length();
+  uint32_t i;
+  nsCOMPtr<nsIMsgDBHdr> oldHdr;
+  nsCOMPtr<nsIMsgDBHdr> newHdr;
+
+  // protect against a bogus undo txn without any source keys
+  // see bug #179856 for details
+  NS_ASSERTION(count, "no source keys");
+  if (!count)
+    return NS_ERROR_UNEXPECTED;
+
+  if (m_isMove)
+  {
+    if (m_srcIsImap4)
+    {
+      bool deleteFlag = true;  //message has been deleted -we are trying to undo it
+      CheckForToggleDelete(srcFolder, m_srcKeyArray[0], &deleteFlag); //there could have been a toggle.
+      rv = UndoImapDeleteFlag(srcFolder, m_srcKeyArray, deleteFlag);
+    }
+    else if (m_canUndelete)
+    {
+      nsCOMPtr<nsIMutableArray> srcMessages =
+        do_CreateInstance(NS_ARRAY_CONTRACTID);
+      nsCOMPtr<nsIMutableArray> dstMessages =
+        do_CreateInstance(NS_ARRAY_CONTRACTID);
+
+      srcDB->StartBatch();
+      for (i = 0; i < count; i++)
+      {
+        rv = dstDB->GetMsgHdrForKey(m_dstKeyArray[i], 
+                                    getter_AddRefs(oldHdr));
+        NS_ASSERTION(oldHdr, "fatal ... cannot get old msg header\n");
+        if (NS_SUCCEEDED(rv) && oldHdr)
+        {
+          rv = srcDB->CopyHdrFromExistingHdr(m_srcKeyArray[i],
+                                             oldHdr, true,
+                                             getter_AddRefs(newHdr));
+          NS_ASSERTION(newHdr, 
+                       "fatal ... cannot create new msg header\n");
+          if (NS_SUCCEEDED(rv) && newHdr)
+          {
+            newHdr->SetStatusOffset(m_srcStatusOffsetArray[i]);
+            srcDB->UndoDelete(newHdr);
+            srcMessages->AppendElement(newHdr, false);
+            // (we want to keep these two lists in sync)
+            dstMessages->AppendElement(oldHdr, false);
+          }
+        }
+      }
+      srcDB->EndBatch();
+
+      nsCOMPtr<nsIMsgFolderNotificationService>
+        notifier(do_GetService(NS_MSGNOTIFICATIONSERVICE_CONTRACTID));
+      if (notifier)
+      {
+        // Remember that we're actually moving things back from the destination
+        //  to the source!
+        notifier->NotifyMsgsMoveCopyCompleted(true, dstMessages,
+                                              srcFolder, srcMessages);
+      }
+
+      nsCOMPtr <nsIMsgLocalMailFolder> localFolder = do_QueryInterface(srcFolder);
+      if (localFolder)
+        localFolder->MarkMsgsOnPop3Server(srcMessages, POP3_NONE /*deleteMsgs*/);
+    }
+    else // undoing a move means moving the messages back.
+    {
+      nsCOMPtr<nsIMutableArray> dstMessages =
+        do_CreateInstance(NS_ARRAY_CONTRACTID);
+      m_numHdrsCopied = 0;
+      m_srcKeyArray.Clear();
+      for (i = 0; i < count; i++)
+      {
+        // GetMsgHdrForKey is not a test for whether the key exists, so check.
+        bool hasKey = false;
+        dstDB->ContainsKey(m_dstKeyArray[i], &hasKey);
+        nsCOMPtr<nsIMsgDBHdr> dstHdr;
+        if (hasKey)
+          dstDB->GetMsgHdrForKey(m_dstKeyArray[i], getter_AddRefs(dstHdr));
+        if (dstHdr)
+        {
+          nsCString messageId;
+          dstHdr->GetMessageId(getter_Copies(messageId));
+          dstMessages->AppendElement(dstHdr, false);
+          m_copiedMsgIds.AppendElement(messageId);
+        }
+        else
+        {
+          NS_WARNING("Cannot get old msg header");
+        }
+      }
+      if (m_copiedMsgIds.Length())
+      {
+        srcFolder->AddFolderListener(this);
+        m_undoing = true;
+        return srcFolder->CopyMessages(dstFolder, dstMessages,
+                                       true, nullptr, nullptr, false,
+                                       false);
+      }
+      else
+      {
+        // Nothing to do, probably because original messages were deleted.
+        NS_WARNING("Undo did not find any messages to move");
+      }
+    }
+    srcDB->SetSummaryValid(true);
+  }
+
+  dstDB->DeleteMessages(m_dstKeyArray.Length(), m_dstKeyArray.Elements(), nullptr);
+  dstDB->SetSummaryValid(true);
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalMoveCopyMsgTxn::RedoTransaction()
+{
+  nsresult rv;
+  nsCOMPtr<nsIMsgDatabase> srcDB;
+  nsCOMPtr<nsIMsgDatabase> dstDB;
+
+  nsCOMPtr<nsIMsgFolder> srcFolder = do_QueryReferent(m_srcFolder, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr<nsIMsgFolder> dstFolder = do_QueryReferent(m_dstFolder, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+  
+  rv = srcFolder->GetMsgDatabase(getter_AddRefs(srcDB));
+  if(NS_FAILED(rv)) return rv;
+  rv = dstFolder->GetMsgDatabase(getter_AddRefs(dstDB));
+  if (NS_FAILED(rv)) return rv;
+
+  uint32_t count = m_srcKeyArray.Length();
+  uint32_t i;
+  nsCOMPtr<nsIMsgDBHdr> oldHdr;
+  nsCOMPtr<nsIMsgDBHdr> newHdr;
+
+  nsCOMPtr<nsIMutableArray> srcMessages = do_CreateInstance(NS_ARRAY_CONTRACTID);
+  nsCOMPtr <nsISupports> msgSupports;
+  
+  for (i=0; i<count; i++)
+  {
+    rv = srcDB->GetMsgHdrForKey(m_srcKeyArray[i], 
+                                getter_AddRefs(oldHdr));
+    NS_ASSERTION(oldHdr, "fatal ... cannot get old msg header\n");
+
+    if (NS_SUCCEEDED(rv) && oldHdr)
+    {
+      msgSupports =do_QueryInterface(oldHdr);
+      srcMessages->AppendElement(msgSupports, false);
+      
+      if (m_canUndelete)
+      {
+      rv = dstDB->CopyHdrFromExistingHdr(m_dstKeyArray[i],
+                                         oldHdr, true,
+                                         getter_AddRefs(newHdr));
+      NS_ASSERTION(newHdr, "fatal ... cannot get new msg header\n");
+      if (NS_SUCCEEDED(rv) && newHdr)
+      {
+        if (i < m_dstSizeArray.Length())
+          rv = newHdr->SetMessageSize(m_dstSizeArray[i]);
+        dstDB->UndoDelete(newHdr);
+      }
+    }
+  }
+  }
+  dstDB->SetSummaryValid(true);
+
+  if (m_isMove)
+  {
+    if (m_srcIsImap4)
+    {
+      // protect against a bogus undo txn without any source keys
+      // see bug #179856 for details
+      NS_ASSERTION(!m_srcKeyArray.IsEmpty(), "no source keys");
+      if (m_srcKeyArray.IsEmpty())
+        return NS_ERROR_UNEXPECTED;
+    
+      bool deleteFlag = false; //message is un-deleted- we are trying to redo
+      CheckForToggleDelete(srcFolder, m_srcKeyArray[0], &deleteFlag); // there could have been a toggle
+      rv = UndoImapDeleteFlag(srcFolder, m_srcKeyArray, deleteFlag);
+    }
+    else if (m_canUndelete)
+    {
+      nsCOMPtr <nsIMsgLocalMailFolder> localFolder = do_QueryInterface(srcFolder);
+      if (localFolder)
+        localFolder->MarkMsgsOnPop3Server(srcMessages, POP3_DELETE /*deleteMsgs*/);
+
+      rv = srcDB->DeleteMessages(m_srcKeyArray.Length(), m_srcKeyArray.Elements(), nullptr);
+      srcDB->SetSummaryValid(true);
+    }
+    else
+    {
+      nsCOMPtr<nsIMsgDBHdr> srcHdr;
+      m_numHdrsCopied = 0;
+      m_dstKeyArray.Clear();
+      for (i = 0; i < count; i++)
+      {
+        srcDB->GetMsgHdrForKey(m_srcKeyArray[i], getter_AddRefs(srcHdr));
+        NS_ASSERTION(srcHdr, "fatal ... cannot get old msg header\n");
+        if (srcHdr)
+        {
+          nsCString messageId;
+          srcHdr->GetMessageId(getter_Copies(messageId));
+          m_copiedMsgIds.AppendElement(messageId);
+        }
+      }
+      dstFolder->AddFolderListener(this);
+      m_undoing = false;
+      return dstFolder->CopyMessages(srcFolder, srcMessages, true, nullptr,
+                                     nullptr, false, false);
+    }
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemAdded(nsIMsgFolder *parentItem, nsISupports *item)
+{
+  nsCOMPtr<nsIMsgDBHdr> msgHdr(do_QueryInterface(item));
+  if (msgHdr)
+  {
+    nsresult rv;
+    nsCOMPtr<nsIMsgFolder> folder = do_QueryReferent(m_undoing ? m_srcFolder :
+                                                     m_dstFolder, &rv);
+    NS_ENSURE_SUCCESS(rv,rv);
+    nsCString messageId;
+    msgHdr->GetMessageId(getter_Copies(messageId));
+    if (m_copiedMsgIds.Contains(messageId))
+    {
+      nsMsgKey msgKey;
+      msgHdr->GetMessageKey(&msgKey);
+      if (m_undoing)
+        m_srcKeyArray.AppendElement(msgKey);
+      else
+        m_dstKeyArray.AppendElement(msgKey);
+      if (++m_numHdrsCopied == m_copiedMsgIds.Length())
+      {
+        folder->RemoveFolderListener(this);
+        m_copiedMsgIds.Clear();
+      }
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemRemoved(nsIMsgFolder *parentItem, nsISupports *item)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemPropertyChanged(nsIMsgFolder *item, nsIAtom *property, const char *oldValue, const char *newValue)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemIntPropertyChanged(nsIMsgFolder *item, nsIAtom *property, int64_t oldValue, int64_t newValue)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemBoolPropertyChanged(nsIMsgFolder *item, nsIAtom *property, bool oldValue, bool newValue)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemUnicharPropertyChanged(nsIMsgFolder *item, nsIAtom *property, const char16_t *oldValue, const char16_t *newValue)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemPropertyFlagChanged(nsIMsgDBHdr *item, nsIAtom *property, uint32_t oldFlag, uint32_t newFlag)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalMoveCopyMsgTxn::OnItemEvent(nsIMsgFolder *aItem, nsIAtom *aEvent)
+{
+  return NS_OK;
+}
+
+NS_IMPL_ISUPPORTS(nsLocalUndoFolderListener, nsIFolderListener)
+
+nsLocalUndoFolderListener::nsLocalUndoFolderListener(nsLocalMoveCopyMsgTxn *aTxn, nsIMsgFolder *aFolder)
+{
+  mTxn = aTxn;
+  mFolder = aFolder;
+}
+
+nsLocalUndoFolderListener::~nsLocalUndoFolderListener()
+{
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemAdded(nsIMsgFolder *parentItem, nsISupports *item)
+{
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemRemoved(nsIMsgFolder *parentItem, nsISupports *item)
+{
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemPropertyChanged(nsIMsgFolder *item, nsIAtom *property, const char *oldValue, const char *newValue)
+{
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemIntPropertyChanged(nsIMsgFolder *item, nsIAtom *property, int64_t oldValue, int64_t newValue)
+{
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemBoolPropertyChanged(nsIMsgFolder *item, nsIAtom *property, bool oldValue, bool newValue)
+{
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemUnicharPropertyChanged(nsIMsgFolder *item, nsIAtom *property, const char16_t *oldValue, const char16_t *newValue)
+{
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemPropertyFlagChanged(nsIMsgDBHdr *item, nsIAtom *property, uint32_t oldFlag, uint32_t newFlag)
+{
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalUndoFolderListener::OnItemEvent(nsIMsgFolder *aItem, nsIAtom *aEvent)
+{
+  if (mTxn && mFolder && aItem == mFolder) {
+      bool isEqual = false;
+      aEvent->ScriptableEquals(NS_LITERAL_STRING("FolderLoaded"), &isEqual);
+      if (isEqual)
+        return mTxn->UndoTransactionInternal();
+  }
+
+  return NS_ERROR_FAILURE;
+}

mailnews/local/src/nsLocalUndoTxn.h

@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef nsLocalUndoTxn_h__
+#define nsLocalUndoTxn_h__
+
+#include "mozilla/Attributes.h"
+#include "msgCore.h"
+#include "nsIMsgFolder.h"
+#include "nsMailboxService.h"
+#include "nsMsgTxn.h"
+#include "MailNewsTypes.h"
+#include "nsTArray.h"
+#include "nsCOMPtr.h"
+#include "nsIUrlListener.h"
+#include "nsIWeakReference.h"
+#include "nsIWeakReferenceUtils.h"
+
+class nsLocalUndoFolderListener;
+
+class nsLocalMoveCopyMsgTxn : public nsIFolderListener, public nsMsgTxn
+{
+public:
+    nsLocalMoveCopyMsgTxn();
+    NS_DECL_ISUPPORTS_INHERITED
+    NS_DECL_NSIFOLDERLISTENER
+
+    // overloading nsITransaction methods
+    NS_IMETHOD UndoTransaction(void) override;
+    NS_IMETHOD RedoTransaction(void) override;
+
+    // helper
+    nsresult AddSrcKey(nsMsgKey aKey);
+    nsresult AddSrcStatusOffset(uint32_t statusOffset);
+    nsresult AddDstKey(nsMsgKey aKey);
+    nsresult AddDstMsgSize(uint32_t msgSize);
+    nsresult SetSrcFolder(nsIMsgFolder* srcFolder);
+    nsresult GetSrcIsImap(bool *isImap);
+    nsresult SetDstFolder(nsIMsgFolder* dstFolder);
+    nsresult Init(nsIMsgFolder* srcFolder,
+                  nsIMsgFolder* dstFolder, bool isMove);
+    nsresult UndoImapDeleteFlag(nsIMsgFolder* aFolder,
+                                nsTArray<nsMsgKey>& aKeyArray,
+                                bool deleteFlag);
+    nsresult UndoTransactionInternal();
+    // If the store using this undo transaction can "undelete" a message,
+    // it will call this function on the transaction; This makes undo/redo
+    // easy because message keys don't change after undo/redo. Otherwise,
+    // we need to adjust the src or dst keys after every undo/redo action
+    // to note the new keys.
+    void SetCanUndelete(bool canUndelete) {m_canUndelete = canUndelete;}
+
+private:
+    virtual ~nsLocalMoveCopyMsgTxn();
+    nsWeakPtr m_srcFolder;
+    nsTArray<nsMsgKey> m_srcKeyArray; // used when src is local or imap
+    nsTArray<uint32_t> m_srcStatusOffsetArray; // used when src is local
+    nsWeakPtr m_dstFolder;
+    nsTArray<nsMsgKey> m_dstKeyArray;
+    bool m_isMove;
+    bool m_srcIsImap4;
+    bool m_canUndelete;
+    nsTArray<uint32_t> m_dstSizeArray;
+    bool m_undoing; // if false, re-doing
+    uint32_t m_numHdrsCopied;
+    nsTArray<nsCString> m_copiedMsgIds;
+    nsLocalUndoFolderListener *mUndoFolderListener;
+};
+
+class nsLocalUndoFolderListener : public nsIFolderListener
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIFOLDERLISTENER
+
+  nsLocalUndoFolderListener(nsLocalMoveCopyMsgTxn *aTxn, nsIMsgFolder *aFolder);
+
+private:
+  virtual ~nsLocalUndoFolderListener();
+  nsLocalMoveCopyMsgTxn *mTxn;
+  nsIMsgFolder *mFolder;
+};
+
+#endif

mailnews/local/src/nsLocalUtils.cpp

@@ -0,0 +1,244 @@
+/* -*- 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 "msgCore.h"
+#include "nsLocalUtils.h"
+#include "nsIServiceManager.h"
+#include "prsystem.h"
+#include "nsCOMPtr.h"
+#include "prmem.h"
+// stuff for temporary root folder hack
+#include "nsIMsgAccountManager.h"
+#include "nsIMsgIncomingServer.h"
+#include "nsIPop3IncomingServer.h"
+#include "nsINoIncomingServer.h"
+#include "nsMsgBaseCID.h"
+#include "nsComponentManagerUtils.h"
+#include "nsServiceManagerUtils.h"
+
+#include "nsMsgUtils.h"
+#include "nsNetCID.h"
+
+// it would be really cool to:
+// - cache the last hostname->path match
+// - if no such server exists, behave like an old-style mailbox URL
+// (i.e. return the mail.directory preference or something)
+static nsresult
+nsGetMailboxServer(const char *uriStr, nsIMsgIncomingServer** aResult)
+{
+  nsresult rv = NS_OK;
+
+  nsCOMPtr<nsIURL> aUrl = do_CreateInstance(NS_STANDARDURL_CONTRACTID, &rv);
+  if (NS_FAILED(rv)) return rv;
+
+  rv = aUrl->SetSpec(nsDependentCString(uriStr));  
+  if (NS_FAILED(rv)) return rv;
+
+  // retrieve the AccountManager
+  nsCOMPtr<nsIMsgAccountManager> accountManager = 
+    do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID, &rv);
+  if (NS_FAILED(rv)) return rv;
+  
+  // find all local mail "no servers" matching the given hostname
+  nsCOMPtr<nsIMsgIncomingServer> none_server;
+  aUrl->SetScheme(NS_LITERAL_CSTRING("none"));
+  // No unescaping of username or hostname done here.
+  // The unescaping is done inside of FindServerByURI
+  rv = accountManager->FindServerByURI(aUrl, false,
+                                  getter_AddRefs(none_server));
+  if (NS_SUCCEEDED(rv)) {
+    NS_ADDREF(*aResult = none_server);
+    return rv;
+  }
+  
+  // if that fails, look for the rss hosts matching the given hostname
+  nsCOMPtr<nsIMsgIncomingServer> rss_server;
+  aUrl->SetScheme(NS_LITERAL_CSTRING("rss"));
+  rv = accountManager->FindServerByURI(aUrl, false,
+                                  getter_AddRefs(rss_server));
+  if (NS_SUCCEEDED(rv))
+  {
+     NS_ADDREF(*aResult = rss_server);
+     return rv;
+  }
+#ifdef HAVE_MOVEMAIL
+  // find all movemail "servers" matching the given hostname
+  nsCOMPtr<nsIMsgIncomingServer> movemail_server;
+  aUrl->SetScheme(NS_LITERAL_CSTRING("movemail"));
+  rv = accountManager->FindServerByURI(aUrl, false,
+                                  getter_AddRefs(movemail_server));
+  if (NS_SUCCEEDED(rv)) {
+    NS_ADDREF(*aResult = movemail_server);
+    return rv;
+  }
+#endif /* HAVE_MOVEMAIL */
+
+  // if that fails, look for the pop hosts matching the given hostname
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  if (NS_FAILED(rv)) 
+  {
+    aUrl->SetScheme(NS_LITERAL_CSTRING("pop3"));
+    rv = accountManager->FindServerByURI(aUrl, false,
+                                    getter_AddRefs(server));
+
+    // if we can't find a pop server, maybe it's a local message 
+    // in an imap hierarchy. look for an imap server.
+    if (NS_FAILED(rv)) 
+    {
+      aUrl->SetScheme(NS_LITERAL_CSTRING("imap"));
+      rv = accountManager->FindServerByURI(aUrl, false,
+                                    getter_AddRefs(server));
+    }
+  }
+  if (NS_SUCCEEDED(rv)) 
+  {
+    NS_ADDREF(*aResult = server);
+    return rv;
+  }
+
+// if you fail after looking at all "pop3", "movemail" and "none" servers, you fail.
+return rv;
+}
+
+static nsresult
+nsLocalURI2Server(const char* uriStr,
+                  nsIMsgIncomingServer ** aResult)
+{
+  nsresult rv;
+
+
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  rv = nsGetMailboxServer(uriStr, getter_AddRefs(server));
+
+  NS_IF_ADDREF(*aResult = server);
+
+  return rv;
+}
+
+// given rootURI and rootURI##folder, return on-disk path of folder
+nsresult
+nsLocalURI2Path(const char* rootURI, const char* uriStr,
+                nsCString& pathResult)
+{
+  nsresult rv;
+
+  // verify that rootURI starts with "mailbox:/" or "mailbox-message:/"
+  if ((PL_strcmp(rootURI, kMailboxRootURI) != 0) && 
+      (PL_strcmp(rootURI, kMailboxMessageRootURI) != 0)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // verify that uristr starts with rooturi
+  nsAutoCString uri(uriStr);
+  if (uri.Find(rootURI) != 0)
+    return NS_ERROR_FAILURE;
+
+
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  rv = nsLocalURI2Server(uriStr, getter_AddRefs(server));
+
+  if (NS_FAILED(rv))
+    return rv;
+
+  // now ask the server what it's root is
+  // and begin pathResult with the mailbox root
+  nsCOMPtr<nsIFile> localPath;
+  rv = server->GetLocalPath(getter_AddRefs(localPath));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCString localNativePath;
+
+  localPath->GetNativePath(localNativePath);
+  nsEscapeNativePath(localNativePath);
+  pathResult = localNativePath.get();
+  const char *curPos = uriStr + PL_strlen(rootURI);
+  if (curPos) {
+    // advance past hostname
+    while ((*curPos)=='/') curPos++;
+    while (*curPos && (*curPos)!='/') curPos++;
+
+    nsAutoCString newPath("");
+
+    // Unescape folder name
+    if (curPos) {
+      nsCString unescapedStr;
+      MsgUnescapeString(nsDependentCString(curPos), 0, unescapedStr);
+      NS_MsgCreatePathStringFromFolderURI(unescapedStr.get(), newPath, NS_LITERAL_CSTRING("none"));
+    } else
+      NS_MsgCreatePathStringFromFolderURI(curPos, newPath, NS_LITERAL_CSTRING("none"));
+
+    pathResult.Append('/');
+    pathResult.Append(newPath);
+  }
+
+  return NS_OK;
+}
+
+/* parses LocalMessageURI
+ * mailbox-message://folder1/folder2#123?header=none or
+ * mailbox-message://folder1/folder2#1234&part=1.2
+ *
+ * puts folder URI in folderURI (mailbox://folder1/folder2)
+ * message key number in key
+ */
+nsresult nsParseLocalMessageURI(const char* uri,
+                                nsCString& folderURI,
+                                nsMsgKey *key)
+{
+  if(!key)
+    return NS_ERROR_NULL_POINTER;
+
+  nsAutoCString uriStr(uri);
+  int32_t keySeparator = uriStr.FindChar('#');
+  if(keySeparator != -1)
+  {
+    int32_t keyEndSeparator = MsgFindCharInSet(uriStr, "?&", keySeparator);
+    folderURI = StringHead(uriStr, keySeparator);
+    folderURI.Cut(7, 8);    // cut out the -message part of mailbox-message:
+
+    nsAutoCString keyStr;
+    if (keyEndSeparator != -1)
+      keyStr = Substring(uriStr, keySeparator + 1,
+                         keyEndSeparator - (keySeparator + 1));
+    else
+      keyStr = StringTail(uriStr, uriStr.Length() - (keySeparator + 1));
+
+    *key = msgKeyFromInt(ParseUint64Str(keyStr.get()));
+    return NS_OK;
+  }
+  return NS_ERROR_FAILURE;
+
+}
+
+nsresult nsBuildLocalMessageURI(const char *baseURI, nsMsgKey key, nsCString& uri)
+{
+  // need to convert mailbox://hostname/.. to mailbox-message://hostname/..
+  uri.Append(baseURI);
+  uri.Append('#');
+  uri.AppendInt(key);
+  return NS_OK;
+}
+
+nsresult nsCreateLocalBaseMessageURI(const nsACString& baseURI, nsCString &baseMessageURI)
+{
+  nsAutoCString tailURI(baseURI);
+
+  // chop off mailbox:/
+  if (tailURI.Find(kMailboxRootURI) == 0)
+    tailURI.Cut(0, PL_strlen(kMailboxRootURI));
+  
+  baseMessageURI = kMailboxMessageRootURI;
+  baseMessageURI += tailURI;
+
+  return NS_OK;
+}
+
+void nsEscapeNativePath(nsCString& nativePath)
+{
+#if defined(XP_WIN)
+  nativePath.Insert('/', 0);
+  MsgReplaceChar(nativePath, '\\', '/');
+#endif
+}

mailnews/local/src/nsLocalUtils.h

@@ -0,0 +1,30 @@
+/* -*- 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/. */
+
+#ifndef NS_LOCALUTILS_H
+#define NS_LOCALUTILS_H
+
+#include "nsStringGlue.h"
+#include "nsIMsgIncomingServer.h"
+
+static const char kMailboxRootURI[] = "mailbox:/";
+static const char kMailboxMessageRootURI[] = "mailbox-message:/";
+
+nsresult
+nsLocalURI2Path(const char* rootURI, const char* uriStr, nsCString& pathResult);
+
+nsresult
+nsParseLocalMessageURI(const char* uri, nsCString& folderURI, nsMsgKey *key);
+
+nsresult 
+nsBuildLocalMessageURI(const char* baseURI, nsMsgKey key, nsCString& uri);
+
+nsresult
+nsCreateLocalBaseMessageURI(const nsACString& baseURI, nsCString &baseMessageURI);
+
+void
+nsEscapeNativePath(nsCString& nativePath);
+
+#endif //NS_LOCALUTILS_H

mailnews/local/src/nsMailboxProtocol.cpp

@@ -0,0 +1,725 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h"
+
+#include "nsMailboxProtocol.h"
+#include "nscore.h"
+#include "nsIOutputStream.h"
+#include "nsIInputStreamPump.h"
+#include "nsIMsgDatabase.h"
+#include "nsIMsgHdr.h"
+#include "nsMsgLineBuffer.h"
+#include "nsMsgDBCID.h"
+#include "nsIMsgMailNewsUrl.h"
+#include "nsICopyMsgStreamListener.h"
+#include "nsMsgMessageFlags.h"
+#include "prtime.h"
+#include "mozilla/Logging.h"
+#include "prerror.h"
+#include "prprf.h"
+#include "nspr.h"
+
+PRLogModuleInfo *MAILBOX;
+#include "nsIFileStreams.h"
+#include "nsIStreamTransportService.h"
+#include "nsIStreamConverterService.h"
+#include "nsIIOService.h"
+#include "nsNetUtil.h"
+#include "nsMsgUtils.h"
+#include "nsIMsgWindow.h"
+#include "nsIMimeHeaders.h"
+#include "nsIMsgPluggableStore.h"
+#include "nsISeekableStream.h"
+
+#include "nsIMsgMdnGenerator.h"
+
+/* the output_buffer_size must be larger than the largest possible line
+ * 2000 seems good for news
+ *
+ * jwz: I increased this to 4k since it must be big enough to hold the
+ * entire button-bar HTML, and with the new "mailto" format, that can
+ * contain arbitrarily long header fields like "references".
+ *
+ * fortezza: proxy auth is huge, buffer increased to 8k (sigh).
+ */
+#define OUTPUT_BUFFER_SIZE (4096*2)
+
+nsMailboxProtocol::nsMailboxProtocol(nsIURI * aURI)
+    : nsMsgProtocol(aURI)
+{
+  m_lineStreamBuffer =nullptr;
+
+  // initialize the pr log if it hasn't been initialiezed already
+  if (!MAILBOX)
+    MAILBOX = PR_NewLogModule("MAILBOX");
+}
+
+nsMailboxProtocol::~nsMailboxProtocol()
+{
+  // free our local state
+  delete m_lineStreamBuffer;
+}
+
+nsresult nsMailboxProtocol::OpenMultipleMsgTransport(uint64_t offset, int32_t size)
+{
+  nsresult rv;
+
+  nsCOMPtr<nsIStreamTransportService> serv =
+      do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // XXX 64-bit
+  rv = serv->CreateInputTransport(m_multipleMsgMoveCopyStream, int64_t(offset),
+                                  int64_t(size), false,
+                                  getter_AddRefs(m_transport));
+
+  return rv;
+}
+
+nsresult nsMailboxProtocol::Initialize(nsIURI * aURL)
+{
+  NS_PRECONDITION(aURL, "invalid URL passed into MAILBOX Protocol");
+  nsresult rv = NS_OK;
+  if (aURL)
+  {
+    rv = aURL->QueryInterface(NS_GET_IID(nsIMailboxUrl), (void **) getter_AddRefs(m_runningUrl));
+    if (NS_SUCCEEDED(rv) && m_runningUrl)
+    {
+      nsCOMPtr <nsIMsgWindow> window;
+      rv = m_runningUrl->GetMailboxAction(&m_mailboxAction);
+      // clear stopped flag on msg window, because we care.
+      nsCOMPtr <nsIMsgMailNewsUrl> mailnewsUrl = do_QueryInterface(m_runningUrl);
+      if (mailnewsUrl)
+      {
+        mailnewsUrl->GetMsgWindow(getter_AddRefs(window));
+        if (window)
+          window->SetStopped(false);
+      }
+
+      if (m_mailboxAction == nsIMailboxUrl::ActionParseMailbox)
+      {
+        // Set the length of the file equal to the max progress
+        nsCOMPtr<nsIFile> file;
+        GetFileFromURL(aURL, getter_AddRefs(file));
+        if (file)
+        {
+          int64_t fileSize = 0;
+          file->GetFileSize(&fileSize);
+          mailnewsUrl->SetMaxProgress(fileSize);
+        }
+
+        rv = OpenFileSocket(aURL, 0, -1 /* read in all the bytes in the file */);
+      }
+      else
+      {
+        // we need to specify a byte range to read in so we read in JUST the message we want.
+        rv = SetupMessageExtraction();
+        if (NS_FAILED(rv)) return rv;
+        uint32_t aMsgSize = 0;
+        rv = m_runningUrl->GetMessageSize(&aMsgSize);
+        NS_ASSERTION(NS_SUCCEEDED(rv), "oops....i messed something up");
+        SetContentLength(aMsgSize);
+        mailnewsUrl->SetMaxProgress(aMsgSize);
+
+        if (RunningMultipleMsgUrl())
+        {
+          // if we're running multiple msg url, we clear the event sink because the multiple
+          // msg urls will handle setting the progress.
+          mProgressEventSink = nullptr;
+        }
+
+        nsCOMPtr<nsIMsgMessageUrl> msgUrl = do_QueryInterface(m_runningUrl, &rv);
+        if (NS_SUCCEEDED(rv))
+        {
+          nsCOMPtr<nsIMsgFolder> folder;
+          nsCOMPtr<nsIMsgDBHdr> msgHdr;
+          rv = msgUrl->GetMessageHeader(getter_AddRefs(msgHdr));
+          if (NS_SUCCEEDED(rv) && msgHdr)
+          {
+            rv = msgHdr->GetFolder(getter_AddRefs(folder));
+            if (NS_SUCCEEDED(rv) && folder)
+            {
+              nsCOMPtr<nsIInputStream> stream;
+              int64_t offset = 0;
+              bool reusable = false;
+
+              rv = folder->GetMsgInputStream(msgHdr, &reusable, getter_AddRefs(stream));
+              NS_ENSURE_SUCCESS(rv, rv);
+              nsCOMPtr<nsISeekableStream> seekableStream(do_QueryInterface(stream, &rv));
+              NS_ENSURE_SUCCESS(rv, rv);
+              seekableStream->Tell(&offset);
+              // create input stream transport
+              nsCOMPtr<nsIStreamTransportService> sts =
+                  do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
+              if (NS_FAILED(rv)) return rv;
+              m_readCount = aMsgSize;
+              // Save the stream for reuse, but only for multiple URLs.
+              if (reusable && RunningMultipleMsgUrl())
+                m_multipleMsgMoveCopyStream = stream;
+              else
+                reusable = false;
+              rv = sts->CreateInputTransport(stream, offset,
+                                             int64_t(aMsgSize), !reusable,
+                                             getter_AddRefs(m_transport));
+
+              m_socketIsOpen = false;
+            }
+          }
+          if (!folder) // must be a .eml file
+            rv = OpenFileSocket(aURL, 0, aMsgSize);
+        }
+        NS_ASSERTION(NS_SUCCEEDED(rv), "oops....i messed something up");
+      }
+    }
+  }
+
+  m_lineStreamBuffer = new nsMsgLineStreamBuffer(OUTPUT_BUFFER_SIZE, true);
+
+  m_nextState = MAILBOX_READ_FOLDER;
+  m_initialState = MAILBOX_READ_FOLDER;
+  mCurrentProgress = 0;
+
+  // do we really need both?
+  m_tempMessageFile = m_tempMsgFile;
+  return rv;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////////
+// we suppport the nsIStreamListener interface
+////////////////////////////////////////////////////////////////////////////////////////////
+
+NS_IMETHODIMP nsMailboxProtocol::OnStartRequest(nsIRequest *request, nsISupports *ctxt)
+{
+  // extract the appropriate event sinks from the url and initialize them in our protocol data
+  // the URL should be queried for a nsINewsURL. If it doesn't support a news URL interface then
+  // we have an error.
+  if (m_nextState == MAILBOX_READ_FOLDER && m_mailboxParser)
+  {
+    // we need to inform our mailbox parser that it's time to start...
+    m_mailboxParser->OnStartRequest(request, ctxt);
+  }
+  return nsMsgProtocol::OnStartRequest(request, ctxt);
+}
+
+bool nsMailboxProtocol::RunningMultipleMsgUrl()
+{
+  if (m_mailboxAction == nsIMailboxUrl::ActionCopyMessage || m_mailboxAction == nsIMailboxUrl::ActionMoveMessage)
+  {
+    uint32_t numMoveCopyMsgs;
+    nsresult rv = m_runningUrl->GetNumMoveCopyMsgs(&numMoveCopyMsgs);
+    if (NS_SUCCEEDED(rv) && numMoveCopyMsgs > 1)
+      return true;
+  }
+  return false;
+}
+
+// stop binding is a "notification" informing us that the stream associated with aURL is going away.
+NS_IMETHODIMP nsMailboxProtocol::OnStopRequest(nsIRequest *request, nsISupports *ctxt, nsresult aStatus)
+{
+  nsresult rv;
+  if (m_nextState == MAILBOX_READ_FOLDER && m_mailboxParser)
+  {
+    // we need to inform our mailbox parser that there is no more incoming data...
+    m_mailboxParser->OnStopRequest(request, ctxt, aStatus);
+  }
+  else if (m_nextState == MAILBOX_READ_MESSAGE)
+  {
+    DoneReadingMessage();
+  }
+  // I'm not getting cancel status - maybe the load group still has the status.
+  bool stopped = false;
+  if (m_runningUrl)
+  {
+    nsCOMPtr <nsIMsgMailNewsUrl> mailnewsUrl = do_QueryInterface(m_runningUrl);
+    if (mailnewsUrl)
+    {
+      nsCOMPtr <nsIMsgWindow> window;
+      mailnewsUrl->GetMsgWindow(getter_AddRefs(window));
+      if (window)
+        window->GetStopped(&stopped);
+    }
+
+    if (!stopped && NS_SUCCEEDED(aStatus) && (m_mailboxAction == nsIMailboxUrl::ActionCopyMessage || m_mailboxAction == nsIMailboxUrl::ActionMoveMessage))
+    {
+      uint32_t numMoveCopyMsgs;
+      uint32_t curMoveCopyMsgIndex;
+      rv = m_runningUrl->GetNumMoveCopyMsgs(&numMoveCopyMsgs);
+      if (NS_SUCCEEDED(rv) && numMoveCopyMsgs > 0)
+      {
+        m_runningUrl->GetCurMoveCopyMsgIndex(&curMoveCopyMsgIndex);
+        if (++curMoveCopyMsgIndex < numMoveCopyMsgs)
+        {
+          if (!mSuppressListenerNotifications && m_channelListener)
+          {
+            nsCOMPtr<nsICopyMessageStreamListener> listener = do_QueryInterface(m_channelListener, &rv);
+            if (listener)
+            {
+              listener->EndCopy(ctxt, aStatus);
+              listener->StartMessage(); // start next message.
+            }
+          }
+          m_runningUrl->SetCurMoveCopyMsgIndex(curMoveCopyMsgIndex);
+          nsCOMPtr <nsIMsgDBHdr> nextMsg;
+          rv = m_runningUrl->GetMoveCopyMsgHdrForIndex(curMoveCopyMsgIndex, getter_AddRefs(nextMsg));
+          if (NS_SUCCEEDED(rv) && nextMsg)
+          {
+            uint32_t msgSize = 0;
+            nsCOMPtr <nsIMsgFolder> msgFolder;
+            nextMsg->GetFolder(getter_AddRefs(msgFolder));
+            NS_ASSERTION(msgFolder, "couldn't get folder for next msg in multiple msg local copy");
+            if (msgFolder)
+            {
+              nsCString uri;
+              msgFolder->GetUriForMsg(nextMsg, uri);
+              nsCOMPtr<nsIMsgMessageUrl> msgUrl = do_QueryInterface(m_runningUrl);
+              if (msgUrl)
+              {
+                msgUrl->SetOriginalSpec(uri.get());
+                msgUrl->SetUri(uri.get());
+
+                uint64_t msgOffset;
+                nextMsg->GetMessageOffset(&msgOffset);
+                nextMsg->GetMessageSize(&msgSize);
+                // now we have to seek to the right position in the file and
+                // basically re-initialize the transport with the correct message size.
+                // then, we have to make sure the url keeps running somehow.
+                nsCOMPtr<nsISupports> urlSupports = do_QueryInterface(m_runningUrl);
+                //
+                // put us in a state where we are always notified of incoming data
+                //
+
+                m_transport = nullptr; // open new stream transport
+                m_inputStream = nullptr;
+                m_outputStream = nullptr;
+
+                if (m_multipleMsgMoveCopyStream)
+                {
+                  rv = OpenMultipleMsgTransport(msgOffset, msgSize);
+                }
+                else
+                {
+                  nsCOMPtr<nsIInputStream> stream;
+                  bool reusable = false;
+                  rv = msgFolder->GetMsgInputStream(nextMsg, &reusable,
+                                                    getter_AddRefs(stream));
+                  NS_ASSERTION(!reusable, "We thought streams were not reusable!");
+
+                  if (NS_SUCCEEDED(rv))
+                  {
+                    // create input stream transport
+                    nsCOMPtr<nsIStreamTransportService> sts =
+                        do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv);
+
+                    if (NS_SUCCEEDED(rv))
+                    {
+                      m_readCount = msgSize;
+                      rv = sts->CreateInputTransport(stream, msgOffset,
+                                                     int64_t(msgSize), true,
+                                                     getter_AddRefs(m_transport));
+                    }
+                  }
+                }
+
+                if (NS_SUCCEEDED(rv))
+                {
+                  if (!m_inputStream)
+                    rv = m_transport->OpenInputStream(0, 0, 0, getter_AddRefs(m_inputStream));
+
+                  if (NS_SUCCEEDED(rv))
+                  {
+                    nsCOMPtr<nsIInputStreamPump> pump;
+                    rv = NS_NewInputStreamPump(getter_AddRefs(pump), m_inputStream);
+                    if (NS_SUCCEEDED(rv)) {
+                      rv = pump->AsyncRead(this, urlSupports);
+                      if (NS_SUCCEEDED(rv))
+                        m_request = pump;
+                    }
+                  }
+                }
+
+                NS_ASSERTION(NS_SUCCEEDED(rv), "AsyncRead failed");
+                if (m_loadGroup)
+                  m_loadGroup->RemoveRequest(static_cast<nsIRequest *>(this), nullptr, aStatus);
+                m_socketIsOpen = true; // mark the channel as open
+                return aStatus;
+              }
+            }
+          }
+        }
+        else
+        {
+        }
+      }
+    }
+  }
+  // and we want to mark ourselves for deletion or some how inform our protocol manager that we are
+  // available for another url if there is one.
+
+  // mscott --> maybe we should set our state to done because we don't run multiple urls in a mailbox
+  // protocol connection....
+  m_nextState = MAILBOX_DONE;
+
+  // the following is for smoke test purposes. QA is looking at this "Mailbox Done" string which
+  // is printed out to the console and determining if the mail app loaded up correctly...obviously
+  // this solution is not very good so we should look at something better, but don't remove this
+  // line before talking to me (mscott) and mailnews QA....
+
+  MOZ_LOG(MAILBOX, mozilla::LogLevel::Info, ("Mailbox Done\n"));
+
+  // when on stop binding is called, we as the protocol are done...let's close down the connection
+  // releasing all of our interfaces. It's important to remember that this on stop binding call
+  // is coming from netlib so they are never going to ping us again with on data available. This means
+  // we'll never be going through the Process loop...
+
+  if (m_multipleMsgMoveCopyStream)
+  {
+    m_multipleMsgMoveCopyStream->Close();
+    m_multipleMsgMoveCopyStream = nullptr;
+  }
+  nsMsgProtocol::OnStopRequest(request, ctxt, aStatus);
+  return CloseSocket();
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////////
+// End of nsIStreamListenerSupport
+//////////////////////////////////////////////////////////////////////////////////////////////
+
+nsresult nsMailboxProtocol::DoneReadingMessage()
+{
+  nsresult rv = NS_OK;
+  // and close the article file if it was open....
+
+  if (m_mailboxAction == nsIMailboxUrl::ActionSaveMessageToDisk && m_msgFileOutputStream)
+    rv = m_msgFileOutputStream->Close();
+
+  return rv;
+}
+
+nsresult nsMailboxProtocol::SetupMessageExtraction()
+{
+  // Determine the number of bytes we are going to need to read out of the
+  // mailbox url....
+  nsCOMPtr<nsIMsgDBHdr> msgHdr;
+  nsresult rv = NS_OK;
+
+  NS_ASSERTION(m_runningUrl, "Not running a url");
+  if (m_runningUrl)
+  {
+    uint32_t messageSize = 0;
+    m_runningUrl->GetMessageSize(&messageSize);
+    if (!messageSize)
+    {
+      nsCOMPtr<nsIMsgMessageUrl> msgUrl = do_QueryInterface(m_runningUrl, &rv);
+      NS_ENSURE_SUCCESS(rv,rv);
+      rv = msgUrl->GetMessageHeader(getter_AddRefs(msgHdr));
+      if (NS_SUCCEEDED(rv) && msgHdr)
+      {
+        msgHdr->GetMessageSize(&messageSize);
+        m_runningUrl->SetMessageSize(messageSize);
+        msgHdr->GetMessageOffset(&m_msgOffset);
+      }
+      else
+        NS_ASSERTION(false, "couldn't get message header");
+    }
+  }
+  return rv;
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////////
+// Begin protocol state machine functions...
+//////////////////////////////////////////////////////////////////////////////////////////////
+
+nsresult nsMailboxProtocol::LoadUrl(nsIURI * aURL, nsISupports * aConsumer)
+{
+  nsresult rv = NS_OK;
+  // if we were already initialized with a consumer, use it...
+  nsCOMPtr<nsIStreamListener> consumer = do_QueryInterface(aConsumer);
+  if (consumer)
+    m_channelListener = consumer;
+
+  if (aURL)
+  {
+    m_runningUrl = do_QueryInterface(aURL);
+    if (m_runningUrl)
+    {
+      // find out from the url what action we are supposed to perform...
+      rv = m_runningUrl->GetMailboxAction(&m_mailboxAction);
+
+      bool convertData = false;
+
+      // need to check if we're fetching an rfc822 part in order to
+      // quote a message.
+      if (m_mailboxAction == nsIMailboxUrl::ActionFetchMessage)
+      {
+        nsCOMPtr<nsIMsgMailNewsUrl> msgUrl = do_QueryInterface(m_runningUrl, &rv);
+        NS_ENSURE_SUCCESS(rv,rv);
+
+        nsAutoCString queryStr;
+        rv = msgUrl->GetQuery(queryStr);
+        NS_ENSURE_SUCCESS(rv,rv);
+
+        // check if this is a filter plugin requesting the message.
+        // in that case, set up a text converter
+        convertData = (queryStr.Find("header=filter") != -1 ||
+                       queryStr.Find("header=attach") != -1);
+      }
+      else if (m_mailboxAction == nsIMailboxUrl::ActionFetchPart)
+      {
+        // when fetching a part, we need to insert a converter into the listener chain order to
+        // force just the part out of the message. Our channel listener is the consumer we'll
+        // pass in to AsyncConvertData.
+        convertData = true;
+        consumer = m_channelListener;
+      }
+      if (convertData)
+      {
+          nsCOMPtr<nsIStreamConverterService> streamConverter = do_GetService("@mozilla.org/streamConverters;1", &rv);
+          NS_ENSURE_SUCCESS(rv, rv);
+          nsCOMPtr <nsIStreamListener> conversionListener;
+          nsCOMPtr<nsIChannel> channel;
+          QueryInterface(NS_GET_IID(nsIChannel), getter_AddRefs(channel));
+
+          rv = streamConverter->AsyncConvertData("message/rfc822",
+                                                 "*/*",
+                                                 consumer, channel, getter_AddRefs(m_channelListener));
+      }
+
+      if (NS_SUCCEEDED(rv))
+      {
+        switch (m_mailboxAction)
+        {
+        case nsIMailboxUrl::ActionParseMailbox:
+          // extract the mailbox parser..
+          rv = m_runningUrl->GetMailboxParser(getter_AddRefs(m_mailboxParser));
+          m_nextState = MAILBOX_READ_FOLDER;
+          break;
+        case nsIMailboxUrl::ActionSaveMessageToDisk:
+          // ohhh, display message already writes a msg to disk (as part of a hack)
+          // so we can piggy back off of that!! We just need to change m_tempMessageFile
+          // to be the name of our save message to disk file. Since save message to disk
+          // urls are run without a docshell to display the msg into, we won't be trying
+          // to display the message after we write it to disk...
+          {
+            nsCOMPtr<nsIMsgMessageUrl> messageUrl = do_QueryInterface(m_runningUrl, &rv);
+            if (NS_SUCCEEDED(rv))
+            {
+              messageUrl->GetMessageFile(getter_AddRefs(m_tempMessageFile));
+              rv = MsgNewBufferedFileOutputStream(getter_AddRefs(m_msgFileOutputStream), m_tempMessageFile, -1, 00600);
+              NS_ENSURE_SUCCESS(rv, rv);
+
+              bool addDummyEnvelope = false;
+              messageUrl->GetAddDummyEnvelope(&addDummyEnvelope);
+              if (addDummyEnvelope)
+                SetFlag(MAILBOX_MSG_PARSE_FIRST_LINE);
+              else
+                ClearFlag(MAILBOX_MSG_PARSE_FIRST_LINE);
+            }
+          }
+          m_nextState = MAILBOX_READ_MESSAGE;
+          break;
+        case nsIMailboxUrl::ActionCopyMessage:
+        case nsIMailboxUrl::ActionMoveMessage:
+        case nsIMailboxUrl::ActionFetchMessage:
+          ClearFlag(MAILBOX_MSG_PARSE_FIRST_LINE);
+          m_nextState = MAILBOX_READ_MESSAGE;
+          break;
+        case nsIMailboxUrl::ActionFetchPart:
+            m_nextState = MAILBOX_READ_MESSAGE;
+            break;
+        default:
+          break;
+        }
+      }
+
+      rv = nsMsgProtocol::LoadUrl(aURL, m_channelListener);
+
+    } // if we received an MAILBOX url...
+  } // if we received a url!
+
+  return rv;
+}
+
+int32_t nsMailboxProtocol::ReadFolderResponse(nsIInputStream * inputStream, uint64_t sourceOffset, uint32_t length)
+{
+  // okay we are doing a folder read in 8K chunks of a mail folder....
+  // this is almost too easy....we can just forward the data in this stream on to our
+  // folder parser object!!!
+
+  nsresult rv = NS_OK;
+  mCurrentProgress += length;
+
+  if (m_mailboxParser)
+  {
+    nsCOMPtr <nsIURI> url = do_QueryInterface(m_runningUrl);
+    rv = m_mailboxParser->OnDataAvailable(nullptr, url, inputStream, sourceOffset, length); // let the parser deal with it...
+  }
+  if (NS_FAILED(rv))
+  {
+    m_nextState = MAILBOX_ERROR_DONE; // drop out of the loop....
+    return -1;
+  }
+
+  // now wait for the next 8K chunk to come in.....
+  SetFlag(MAILBOX_PAUSE_FOR_READ);
+
+  // leave our state alone so when the next chunk of the mailbox comes in we jump to this state
+  // and repeat....how does this process end? Well when the file is done being read in, core net lib
+  // will issue an ::OnStopRequest to us...we'll use that as our sign to drop out of this state and to
+  // close the protocol instance...
+
+  return 0;
+}
+
+int32_t nsMailboxProtocol::ReadMessageResponse(nsIInputStream * inputStream, uint64_t sourceOffset, uint32_t length)
+{
+  char *line = nullptr;
+  uint32_t status = 0;
+  nsresult rv = NS_OK;
+  mCurrentProgress += length;
+
+  // if we are doing a move or a copy, forward the data onto the copy handler...
+  // if we want to display the message then parse the incoming data...
+
+  if (m_channelListener)
+  {
+    // just forward the data we read in to the listener...
+    rv = m_channelListener->OnDataAvailable(this, m_channelContext, inputStream, sourceOffset, length);
+  }
+  else
+  {
+    bool pauseForMoreData = false;
+    bool canonicalLineEnding = false;
+    nsCOMPtr<nsIMsgMessageUrl> msgurl = do_QueryInterface(m_runningUrl);
+
+    if (msgurl)
+      msgurl->GetCanonicalLineEnding(&canonicalLineEnding);
+
+    while ((line = m_lineStreamBuffer->ReadNextLine(inputStream, status, pauseForMoreData)) &&
+           !pauseForMoreData)
+    {
+      /* When we're sending this line to a converter (ie,
+      it's a message/rfc822) use the local line termination
+      convention, not CRLF.  This makes text articles get
+      saved with the local line terminators.  Since SMTP
+      and NNTP mandate the use of CRLF, it is expected that
+      the local system will convert that to the local line
+      terminator as it is read.
+      */
+      // mscott - the firstline hack is aimed at making sure we don't write
+      // out the dummy header when we are trying to display the message.
+      // The dummy header is the From line with the date tag on it.
+      if (m_msgFileOutputStream && TestFlag(MAILBOX_MSG_PARSE_FIRST_LINE))
+      {
+        uint32_t count = 0;
+        rv = m_msgFileOutputStream->Write(line, PL_strlen(line), &count);
+        if (NS_FAILED(rv))
+          break;
+
+        if (canonicalLineEnding)
+          rv = m_msgFileOutputStream->Write(CRLF, 2, &count);
+        else
+          rv = m_msgFileOutputStream->Write(MSG_LINEBREAK,
+                                            MSG_LINEBREAK_LEN, &count);
+
+        if (NS_FAILED(rv))
+          break;
+      }
+      else
+        SetFlag(MAILBOX_MSG_PARSE_FIRST_LINE);
+      PR_Free(line);
+    }
+    PR_Free(line);
+  }
+
+  SetFlag(MAILBOX_PAUSE_FOR_READ); // wait for more data to become available...
+  if (mProgressEventSink && m_runningUrl)
+  {
+    int64_t maxProgress;
+    nsCOMPtr<nsIMsgMailNewsUrl> mailnewsUrl(do_QueryInterface(m_runningUrl));
+    mailnewsUrl->GetMaxProgress(&maxProgress);
+    mProgressEventSink->OnProgress(this, m_channelContext,
+                                   mCurrentProgress,
+                                   maxProgress);
+  }
+
+  if (NS_FAILED(rv)) return -1;
+
+  return 0;
+}
+
+
+/*
+ * returns negative if the transfer is finished or error'd out
+ *
+ * returns zero or more if the transfer needs to be continued.
+ */
+nsresult nsMailboxProtocol::ProcessProtocolState(nsIURI * url, nsIInputStream * inputStream, uint64_t offset, uint32_t length)
+{
+  nsresult rv = NS_OK;
+  int32_t status = 0;
+  ClearFlag(MAILBOX_PAUSE_FOR_READ); /* already paused; reset */
+
+  while(!TestFlag(MAILBOX_PAUSE_FOR_READ))
+  {
+
+    switch(m_nextState)
+    {
+    case MAILBOX_READ_MESSAGE:
+      if (inputStream == nullptr)
+        SetFlag(MAILBOX_PAUSE_FOR_READ);
+      else
+        status = ReadMessageResponse(inputStream, offset, length);
+      break;
+    case MAILBOX_READ_FOLDER:
+      if (inputStream == nullptr)
+        SetFlag(MAILBOX_PAUSE_FOR_READ);   // wait for file socket to read in the next chunk...
+      else
+        status = ReadFolderResponse(inputStream, offset, length);
+      break;
+    case MAILBOX_DONE:
+    case MAILBOX_ERROR_DONE:
+      {
+        nsCOMPtr <nsIMsgMailNewsUrl> anotherUrl = do_QueryInterface(m_runningUrl);
+        rv = m_nextState == MAILBOX_DONE ? NS_OK : NS_ERROR_FAILURE;
+        anotherUrl->SetUrlState(false, rv);
+        m_nextState = MAILBOX_FREE;
+      }
+      break;
+
+    case MAILBOX_FREE:
+      // MAILBOX is a one time use connection so kill it if we get here...
+      CloseSocket();
+      return rv; /* final end */
+
+    default: /* should never happen !!! */
+      m_nextState = MAILBOX_ERROR_DONE;
+      break;
+    }
+
+    /* check for errors during load and call error
+    * state if found
+    */
+    if(status < 0 && m_nextState != MAILBOX_FREE)
+    {
+      m_nextState = MAILBOX_ERROR_DONE;
+      /* don't exit! loop around again and do the free case */
+      ClearFlag(MAILBOX_PAUSE_FOR_READ);
+    }
+  } /* while(!MAILBOX_PAUSE_FOR_READ) */
+
+  return rv;
+}
+
+nsresult nsMailboxProtocol::CloseSocket()
+{
+  // how do you force a release when closing the connection??
+  nsMsgProtocol::CloseSocket();
+  m_runningUrl = nullptr;
+  m_mailboxParser = nullptr;
+  return NS_OK;
+}
+
+// vim: ts=2 sw=2

mailnews/local/src/nsMailboxProtocol.h

@@ -0,0 +1,125 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef nsMailboxProtocol_h___
+#define nsMailboxProtocol_h___
+
+#include "mozilla/Attributes.h"
+#include "nsMsgProtocol.h"
+#include "nsCOMPtr.h"
+#include "nsIFile.h"
+#include "nsIChannel.h"
+#include "nsIInputStreamPump.h"
+#include "nsIOutputStream.h"
+#include "nsIMailboxUrl.h"
+// State Flags (Note, I use the word state in terms of storing
+// state information about the connection (authentication, have we sent
+// commands, etc. I do not intend it to refer to protocol state)
+
+#define MAILBOX_PAUSE_FOR_READ      0x00000001  /* should we pause for the next read */
+#define MAILBOX_MSG_PARSE_FIRST_LINE    0x00000002 /* have we read in the first line of the msg */
+
+/* states of the machine
+ */
+typedef enum _MailboxStatesEnum {
+  MAILBOX_READ_FOLDER,
+  MAILBOX_FINISH_OPEN_FOLDER,
+  MAILBOX_OPEN_MESSAGE,
+  MAILBOX_OPEN_STREAM,
+  MAILBOX_READ_MESSAGE,
+  MAILBOX_COMPRESS_FOLDER,
+  MAILBOX_FINISH_COMPRESS_FOLDER,
+  MAILBOX_BACKGROUND,
+  MAILBOX_NULL,
+  MAILBOX_NULL2,
+  MAILBOX_DELIVER_QUEUED,
+  MAILBOX_FINISH_DELIVER_QUEUED,
+  MAILBOX_DONE,
+  MAILBOX_ERROR_DONE,
+  MAILBOX_FREE,
+  MAILBOX_COPY_MESSAGES,
+  MAILBOX_FINISH_COPY_MESSAGES
+} MailboxStatesEnum;
+
+class nsMsgLineStreamBuffer;
+
+class nsMailboxProtocol : public nsMsgProtocol
+{
+public:
+  // Creating a protocol instance requires the URL which needs to be run AND it requires
+  // a transport layer.
+  nsMailboxProtocol(nsIURI * aURL);
+  virtual ~nsMailboxProtocol();
+
+  // initialization function given a new url and transport layer
+  nsresult Initialize(nsIURI * aURL);
+
+  // the consumer of the url might be something like an nsIDocShell....
+  virtual nsresult LoadUrl(nsIURI * aURL, nsISupports * aConsumer) override;
+
+  ////////////////////////////////////////////////////////////////////////////////////////
+  // we suppport the nsIStreamListener interface
+  ////////////////////////////////////////////////////////////////////////////////////////
+
+  NS_IMETHOD OnStartRequest(nsIRequest *request, nsISupports *ctxt) override;
+  NS_IMETHOD OnStopRequest(nsIRequest *request, nsISupports *ctxt, nsresult aStatus) override;
+
+private:
+  nsCOMPtr<nsIMailboxUrl>  m_runningUrl; // the nsIMailboxURL that is currently running
+  nsMailboxAction m_mailboxAction; // current mailbox action associated with this connnection...
+  uint64_t m_msgOffset;
+  // Event sink handles
+  nsCOMPtr<nsIStreamListener> m_mailboxParser;
+
+  // Local state for the current operation
+  nsMsgLineStreamBuffer   * m_lineStreamBuffer; // used to efficiently extract lines from the incoming data stream
+
+  // Generic state information -- What state are we in? What state do we want to go to
+  // after the next response? What was the last response code? etc.
+  MailboxStatesEnum  m_nextState;
+  MailboxStatesEnum  m_initialState;
+
+  int64_t   mCurrentProgress;
+
+        // can we just use the base class m_tempMsgFile?
+  nsCOMPtr<nsIFile> m_tempMessageFile;
+        nsCOMPtr<nsIOutputStream> m_msgFileOutputStream;
+
+  // this is used to hold the source mailbox file open when move/copying
+  // multiple messages.
+  nsCOMPtr<nsIInputStream> m_multipleMsgMoveCopyStream;
+
+  virtual nsresult ProcessProtocolState(nsIURI * url, nsIInputStream * inputStream,
+                                        uint64_t sourceOffset, uint32_t length) override;
+  virtual nsresult CloseSocket() override;
+
+  nsresult SetupMessageExtraction();
+  nsresult OpenMultipleMsgTransport(uint64_t offset, int32_t size);
+  bool RunningMultipleMsgUrl();
+
+  ////////////////////////////////////////////////////////////////////////////////////////
+  // Protocol Methods --> This protocol is state driven so each protocol method is
+  //            designed to re-act to the current "state". I've attempted to
+  //            group them together based on functionality.
+  ////////////////////////////////////////////////////////////////////////////////////////
+
+  // When parsing a mailbox folder in chunks, this protocol state reads in the current chunk
+  // and forwards it to the mailbox parser.
+  int32_t ReadFolderResponse(nsIInputStream * inputStream, uint64_t sourceOffset, uint32_t length);
+  int32_t ReadMessageResponse(nsIInputStream * inputStream, uint64_t sourceOffset, uint32_t length);
+  nsresult DoneReadingMessage();
+
+  ////////////////////////////////////////////////////////////////////////////////////////
+  // End of Protocol Methods
+  ////////////////////////////////////////////////////////////////////////////////////////
+};
+
+#endif  // nsMailboxProtocol_h___
+
+
+
+
+
+

mailnews/local/src/nsMailboxServer.cpp

@@ -0,0 +1,33 @@
+/**
+ * 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 "nsMailboxServer.h"
+#include "nsLocalMailFolder.h"
+
+NS_IMETHODIMP
+nsMailboxServer::GetLocalStoreType(nsACString& type)
+{
+  type.AssignLiteral("mailbox");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMailboxServer::GetLocalDatabaseType(nsACString& type)
+{
+  type.AssignLiteral("mailbox");
+  return NS_OK;
+}
+
+nsresult
+nsMailboxServer::CreateRootFolderFromUri(const nsCString &serverUri,
+                                         nsIMsgFolder **rootFolder)
+{
+  nsMsgLocalMailFolder *newRootFolder = new nsMsgLocalMailFolder;
+  if (!newRootFolder)
+    return NS_ERROR_OUT_OF_MEMORY;
+  NS_ADDREF(*rootFolder = newRootFolder);
+  newRootFolder->Init(serverUri.get());
+  return NS_OK;
+}

mailnews/local/src/nsMailboxServer.h

@@ -0,0 +1,22 @@
+/**
+ * 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/. */
+
+#ifndef nsMailboxServer_h__
+#define nsMailboxServer_h__
+
+#include "mozilla/Attributes.h"
+#include "nsMsgIncomingServer.h"
+
+class nsMailboxServer : public nsMsgIncomingServer
+{
+public:
+  NS_IMETHOD GetLocalStoreType(nsACString& type) override;
+  NS_IMETHOD GetLocalDatabaseType(nsACString& type) override;
+protected:
+  virtual nsresult CreateRootFolderFromUri(const nsCString &serverUri,
+                                           nsIMsgFolder **rootFolder) override;
+};
+
+#endif

mailnews/local/src/nsMailboxService.cpp

@@ -0,0 +1,677 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h"    // precompiled header...
+#include "nsCOMPtr.h"
+
+#include "nsMailboxService.h"
+#include "nsMailboxUrl.h"
+#include "nsIMsgMailNewsUrl.h"
+#include "nsMailboxProtocol.h"
+#include "nsIMsgDatabase.h"
+#include "nsMsgDBCID.h"
+#include "MailNewsTypes.h"
+#include "nsTArray.h"
+#include "nsLocalUtils.h"
+#include "nsMsgLocalCID.h"
+#include "nsMsgBaseCID.h"
+#include "nsIDocShell.h"
+#include "nsIPop3Service.h"
+#include "nsMsgUtils.h"
+#include "nsNetUtil.h"
+#include "nsIDocShellLoadInfo.h"
+#include "nsIWebNavigation.h"
+#include "prprf.h"
+#include "nsIMsgHdr.h"
+#include "nsIFileURL.h"
+#include "mozilla/RefPtr.h"
+
+nsMailboxService::nsMailboxService()
+{
+    mPrintingOperation = false;
+}
+
+nsMailboxService::~nsMailboxService()
+{}
+
+NS_IMPL_ISUPPORTS(nsMailboxService, nsIMailboxService, nsIMsgMessageService, nsIProtocolHandler, nsIMsgMessageFetchPartService)
+
+nsresult nsMailboxService::ParseMailbox(nsIMsgWindow *aMsgWindow, nsIFile *aMailboxPath, nsIStreamListener *aMailboxParser,
+                    nsIUrlListener * aUrlListener, nsIURI ** aURL)
+{
+  NS_ENSURE_ARG_POINTER(aMailboxPath);
+
+  nsresult rv;
+  nsCOMPtr<nsIMailboxUrl> mailboxurl =
+    do_CreateInstance(NS_MAILBOXURL_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv) && mailboxurl)
+  {
+    nsCOMPtr<nsIMsgMailNewsUrl> url = do_QueryInterface(mailboxurl);
+    // okay now generate the url string
+    nsCString mailboxPath;
+
+    aMailboxPath->GetNativePath(mailboxPath);
+    nsAutoCString buf;
+    MsgEscapeURL(mailboxPath,
+                 nsINetUtil::ESCAPE_URL_MINIMAL | nsINetUtil::ESCAPE_URL_FORCED, buf);
+    nsEscapeNativePath(buf);
+    url->SetUpdatingFolder(true);
+    url->SetMsgWindow(aMsgWindow);
+    nsAutoCString uriSpec("mailbox://");
+    uriSpec.Append(buf);
+    rv = url->SetSpec(uriSpec);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    mailboxurl->SetMailboxParser(aMailboxParser);
+    if (aUrlListener)
+      url->RegisterListener(aUrlListener);
+
+    rv = RunMailboxUrl(url, nullptr);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (aURL)
+    {
+      *aURL = url;
+      NS_IF_ADDREF(*aURL);
+    }
+  }
+
+  return rv;
+}
+
+nsresult nsMailboxService::CopyMessage(const char * aSrcMailboxURI,
+                              nsIStreamListener * aMailboxCopyHandler,
+                              bool moveMessage,
+                              nsIUrlListener * aUrlListener,
+                              nsIMsgWindow *aMsgWindow,
+                              nsIURI **aURL)
+{
+    nsMailboxAction mailboxAction = nsIMailboxUrl::ActionMoveMessage;
+    if (!moveMessage)
+        mailboxAction = nsIMailboxUrl::ActionCopyMessage;
+  return FetchMessage(aSrcMailboxURI, aMailboxCopyHandler, aMsgWindow, aUrlListener, nullptr, mailboxAction, nullptr, aURL);
+}
+
+nsresult nsMailboxService::CopyMessages(uint32_t aNumKeys,
+                                        nsMsgKey* aMsgKeys,
+                                        nsIMsgFolder *srcFolder,
+                                        nsIStreamListener * aMailboxCopyHandler,
+                                        bool moveMessage,
+                                        nsIUrlListener * aUrlListener,
+                                        nsIMsgWindow *aMsgWindow,
+                                        nsIURI **aURL)
+{
+  nsresult rv = NS_OK;
+  NS_ENSURE_ARG(srcFolder);
+  NS_ENSURE_ARG(aMsgKeys);
+  nsCOMPtr<nsIMailboxUrl> mailboxurl;
+
+  nsMailboxAction actionToUse = nsIMailboxUrl::ActionMoveMessage;
+  if (!moveMessage)
+     actionToUse = nsIMailboxUrl::ActionCopyMessage;
+
+  nsCOMPtr <nsIMsgDBHdr> msgHdr;
+  nsCOMPtr <nsIMsgDatabase> db;
+  srcFolder->GetMsgDatabase(getter_AddRefs(db));
+  if (db)
+  {
+    db->GetMsgHdrForKey(aMsgKeys[0], getter_AddRefs(msgHdr));
+    if (msgHdr)
+    {
+      nsCString uri;
+      srcFolder->GetUriForMsg(msgHdr, uri);
+      rv = PrepareMessageUrl(uri.get(), aUrlListener, actionToUse , getter_AddRefs(mailboxurl), aMsgWindow);
+
+      if (NS_SUCCEEDED(rv))
+      {
+        nsCOMPtr<nsIURI> url = do_QueryInterface(mailboxurl);
+        nsCOMPtr<nsIMsgMailNewsUrl> msgUrl (do_QueryInterface(url));
+        nsCOMPtr<nsIMailboxUrl> mailboxUrl (do_QueryInterface(url));
+        msgUrl->SetMsgWindow(aMsgWindow);
+
+        mailboxUrl->SetMoveCopyMsgKeys(aMsgKeys, aNumKeys);
+        rv = RunMailboxUrl(url, aMailboxCopyHandler);
+      }
+    }
+  }
+  if (aURL && mailboxurl)
+    CallQueryInterface(mailboxurl, aURL);
+
+  return rv;
+}
+
+nsresult nsMailboxService::FetchMessage(const char* aMessageURI,
+                                        nsISupports * aDisplayConsumer,
+                                        nsIMsgWindow * aMsgWindow,
+                                        nsIUrlListener * aUrlListener,
+                                        const char * aFileName, /* only used by open attachment... */
+                                        nsMailboxAction mailboxAction,
+                                        const char * aCharsetOverride,
+                                        nsIURI ** aURL)
+{
+  nsresult rv = NS_OK;
+  nsCOMPtr<nsIMailboxUrl> mailboxurl;
+  nsMailboxAction actionToUse = mailboxAction;
+  nsCOMPtr<nsIURI> url;
+  nsCOMPtr<nsIMsgMailNewsUrl> msgUrl;
+  nsAutoCString uriString(aMessageURI);
+
+  if (!strncmp(aMessageURI, "file:", 5))
+  {
+    int64_t fileSize;
+    nsCOMPtr<nsIURI> fileUri;
+    rv = NS_NewURI(getter_AddRefs(fileUri), aMessageURI);
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr <nsIFileURL> fileUrl = do_QueryInterface(fileUri, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr <nsIFile> file;
+    rv = fileUrl->GetFile(getter_AddRefs(file));
+    NS_ENSURE_SUCCESS(rv, rv);
+    file->GetFileSize(&fileSize);
+    uriString.Replace(0, 5, NS_LITERAL_CSTRING("mailbox:"));
+    uriString.Append(NS_LITERAL_CSTRING("&number=0"));
+    rv = NS_NewURI(getter_AddRefs(url), uriString);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    msgUrl = do_QueryInterface(url);
+    if (msgUrl)
+    {
+      msgUrl->SetMsgWindow(aMsgWindow);
+      nsCOMPtr <nsIMailboxUrl> mailboxUrl = do_QueryInterface(msgUrl, &rv);
+      mailboxUrl->SetMessageSize((uint32_t) fileSize);
+      nsCOMPtr <nsIMsgHeaderSink> headerSink;
+       // need to tell the header sink to capture some headers to create a fake db header
+       // so we can do reply to a .eml file or a rfc822 msg attachment.
+      if (aMsgWindow)
+        aMsgWindow->GetMsgHeaderSink(getter_AddRefs(headerSink));
+      if (headerSink)
+      {
+        nsCOMPtr <nsIMsgDBHdr> dummyHeader;
+        headerSink->GetDummyMsgHeader(getter_AddRefs(dummyHeader));
+        if (dummyHeader)
+          dummyHeader->SetMessageSize((uint32_t) fileSize);
+      }
+    }
+  }
+  else
+  {
+    // this happens with forward inline of message/rfc822 attachment
+    // opened in a stand-alone msg window.
+    int32_t typeIndex = uriString.Find("&type=application/x-message-display");
+    if (typeIndex != -1)
+    {
+      uriString.Cut(typeIndex, sizeof("&type=application/x-message-display") - 1);
+      rv = NS_NewURI(getter_AddRefs(url), uriString.get());
+      mailboxurl = do_QueryInterface(url);
+    }
+    else
+      rv = PrepareMessageUrl(aMessageURI, aUrlListener, actionToUse , getter_AddRefs(mailboxurl), aMsgWindow);
+
+    if (NS_SUCCEEDED(rv))
+    {
+      url = do_QueryInterface(mailboxurl);
+      msgUrl = do_QueryInterface(url);
+      msgUrl->SetMsgWindow(aMsgWindow);
+      if (aFileName)
+        msgUrl->SetFileName(nsDependentCString(aFileName));
+    }
+  }
+
+  nsCOMPtr<nsIMsgI18NUrl> i18nurl(do_QueryInterface(msgUrl));
+  if (i18nurl)
+    i18nurl->SetCharsetOverRide(aCharsetOverride);
+
+  // instead of running the mailbox url like we used to, let's try to run the url in the docshell...
+  nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aDisplayConsumer, &rv));
+  // if we were given a docShell, run the url in the docshell..otherwise just run it normally.
+  if (NS_SUCCEEDED(rv) && docShell)
+  {
+    nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
+    // DIRTY LITTLE HACK --> if we are opening an attachment we want the docshell to
+    // treat this load as if it were a user click event. Then the dispatching stuff will be much
+    // happier.
+    if (mailboxAction == nsIMailboxUrl::ActionFetchPart)
+    {
+      docShell->CreateLoadInfo(getter_AddRefs(loadInfo));
+      loadInfo->SetLoadType(nsIDocShellLoadInfo::loadLink);
+    }
+    rv = docShell->LoadURI(url, loadInfo, nsIWebNavigation::LOAD_FLAGS_NONE, false);
+  }
+  else
+    rv = RunMailboxUrl(url, aDisplayConsumer);
+
+  if (aURL && mailboxurl)
+    CallQueryInterface(mailboxurl, aURL);
+
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxService::FetchMimePart(nsIURI *aURI, const char *aMessageURI, nsISupports *aDisplayConsumer, nsIMsgWindow *aMsgWindow, nsIUrlListener *aUrlListener, nsIURI **aURL)
+{
+  nsresult rv;
+  nsCOMPtr<nsIMsgMailNewsUrl> msgUrl (do_QueryInterface(aURI, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  msgUrl->SetMsgWindow(aMsgWindow);
+
+  // set up the url listener
+  if (aUrlListener)
+    msgUrl->RegisterListener(aUrlListener);
+
+  return RunMailboxUrl(msgUrl, aDisplayConsumer);
+}
+
+NS_IMETHODIMP nsMailboxService::DisplayMessage(const char* aMessageURI,
+                                               nsISupports * aDisplayConsumer,
+                                               nsIMsgWindow * aMsgWindow,
+                                               nsIUrlListener * aUrlListener,
+                                               const char * aCharsetOveride,
+                                               nsIURI ** aURL)
+{
+  return FetchMessage(aMessageURI, aDisplayConsumer,
+    aMsgWindow,aUrlListener, nullptr,
+    nsIMailboxUrl::ActionFetchMessage, aCharsetOveride, aURL);
+}
+
+NS_IMETHODIMP
+nsMailboxService::StreamMessage(const char *aMessageURI,
+                                nsISupports *aConsumer,
+                                nsIMsgWindow *aMsgWindow,
+                                nsIUrlListener *aUrlListener,
+                                bool /* aConvertData */,
+                                const nsACString &aAdditionalHeader,
+                                bool aLocalOnly,
+                                nsIURI **aURL)
+{
+    // The mailbox protocol object will look for "header=filter" or
+    // "header=attach" to decide if it wants to convert the data instead of
+    // using aConvertData. It turns out to be way too hard to pass aConvertData
+    // all the way over to the mailbox protocol object.
+    nsAutoCString aURIString(aMessageURI);
+    if (!aAdditionalHeader.IsEmpty())
+    {
+      aURIString.FindChar('?') == -1 ? aURIString += "?" : aURIString += "&";
+      aURIString += "header=";
+      aURIString += aAdditionalHeader;
+    }
+
+    return FetchMessage(aURIString.get(), aConsumer, aMsgWindow, aUrlListener, nullptr,
+                                        nsIMailboxUrl::ActionFetchMessage, nullptr, aURL);
+}
+
+NS_IMETHODIMP nsMailboxService::StreamHeaders(const char *aMessageURI,
+                                              nsIStreamListener *aConsumer,
+                                              nsIUrlListener *aUrlListener,
+                                              bool aLocalOnly,
+                                              nsIURI **aURL)
+{
+  NS_ENSURE_ARG_POINTER(aMessageURI);
+  NS_ENSURE_ARG_POINTER(aConsumer);
+  nsAutoCString folderURI;
+  nsMsgKey msgKey;
+  nsCOMPtr<nsIMsgFolder> folder;
+  nsresult rv = DecomposeMailboxURI(aMessageURI, getter_AddRefs(folder), &msgKey);
+  if (msgKey == nsMsgKey_None)
+    return NS_MSG_MESSAGE_NOT_FOUND;
+
+  nsCOMPtr<nsIInputStream> inputStream;
+  int64_t messageOffset;
+  uint32_t messageSize;
+  rv = folder->GetOfflineFileStream(msgKey, &messageOffset, &messageSize, getter_AddRefs(inputStream));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // GetOfflineFileStream returns NS_OK but null inputStream when there is an error getting the database
+  if (!inputStream)
+    return NS_ERROR_FAILURE;
+  return MsgStreamMsgHeaders(inputStream, aConsumer);
+}
+
+
+NS_IMETHODIMP nsMailboxService::IsMsgInMemCache(nsIURI *aUrl,
+                                                nsIMsgFolder *aFolder,
+                                                bool *aResult)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsMailboxService::OpenAttachment(const char *aContentType,
+                                               const char *aFileName,
+                                               const char *aUrl,
+                                               const char *aMessageUri,
+                                               nsISupports *aDisplayConsumer,
+                                               nsIMsgWindow *aMsgWindow,
+                                               nsIUrlListener *aUrlListener)
+{
+  nsCOMPtr <nsIURI> URL;
+  nsAutoCString urlString(aUrl);
+  urlString += "&type=";
+  urlString += aContentType;
+  urlString += "&filename=";
+  urlString += aFileName;
+  CreateStartupUrl(urlString.get(), getter_AddRefs(URL));
+  nsresult rv;
+
+  // try to run the url in the docshell...
+  nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(aDisplayConsumer, &rv));
+  // if we were given a docShell, run the url in the docshell..otherwise just run it normally.
+  if (NS_SUCCEEDED(rv) && docShell)
+  {
+    nsCOMPtr<nsIDocShellLoadInfo> loadInfo;
+    // DIRTY LITTLE HACK --> since we are opening an attachment we want the docshell to
+    // treat this load as if it were a user click event. Then the dispatching stuff will be much
+    // happier.
+    docShell->CreateLoadInfo(getter_AddRefs(loadInfo));
+    loadInfo->SetLoadType(nsIDocShellLoadInfo::loadLink);
+    return docShell->LoadURI(URL, loadInfo, nsIWebNavigation::LOAD_FLAGS_NONE, false);
+  }
+  return RunMailboxUrl(URL, aDisplayConsumer);
+
+}
+
+
+NS_IMETHODIMP
+nsMailboxService::SaveMessageToDisk(const char *aMessageURI,
+                                    nsIFile *aFile,
+                                    bool aAddDummyEnvelope,
+                                    nsIUrlListener *aUrlListener,
+                                    nsIURI **aURL,
+                                    bool canonicalLineEnding,
+                                    nsIMsgWindow *aMsgWindow)
+{
+  nsresult rv = NS_OK;
+  nsCOMPtr<nsIMailboxUrl> mailboxurl;
+
+  rv = PrepareMessageUrl(aMessageURI, aUrlListener, nsIMailboxUrl::ActionSaveMessageToDisk, getter_AddRefs(mailboxurl), aMsgWindow);
+
+  if (NS_SUCCEEDED(rv))
+  {
+    nsCOMPtr<nsIMsgMessageUrl> msgUrl = do_QueryInterface(mailboxurl);
+    if (msgUrl)
+    {
+      msgUrl->SetMessageFile(aFile);
+      msgUrl->SetAddDummyEnvelope(aAddDummyEnvelope);
+      msgUrl->SetCanonicalLineEnding(canonicalLineEnding);
+    }
+
+    nsCOMPtr<nsIURI> url = do_QueryInterface(mailboxurl);
+    rv = RunMailboxUrl(url);
+  }
+
+  if (aURL && mailboxurl)
+    CallQueryInterface(mailboxurl, aURL);
+
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxService::GetUrlForUri(const char *aMessageURI, nsIURI **aURL, nsIMsgWindow *aMsgWindow)
+{
+  NS_ENSURE_ARG_POINTER(aURL);
+  if (!strncmp(aMessageURI, "file:", 5) || PL_strstr(aMessageURI, "type=application/x-message-display")
+    || !strncmp(aMessageURI, "mailbox:", 8))
+    return NS_NewURI(aURL, aMessageURI);
+
+  nsresult rv = NS_OK;
+  nsCOMPtr<nsIMailboxUrl> mailboxurl;
+  rv = PrepareMessageUrl(aMessageURI, nullptr, nsIMailboxUrl::ActionFetchMessage, getter_AddRefs(mailboxurl), aMsgWindow);
+  if (NS_SUCCEEDED(rv) && mailboxurl)
+    rv = CallQueryInterface(mailboxurl, aURL);
+  return rv;
+}
+
+// Takes a mailbox url, this method creates a protocol instance and loads the url
+// into the protocol instance.
+nsresult nsMailboxService::RunMailboxUrl(nsIURI * aMailboxUrl, nsISupports * aDisplayConsumer)
+{
+  // create a protocol instance to run the url..
+  nsresult rv = NS_OK;
+  nsMailboxProtocol * protocol = new nsMailboxProtocol(aMailboxUrl);
+
+  if (protocol)
+  {
+    rv = protocol->Initialize(aMailboxUrl);
+    if (NS_FAILED(rv))
+    {
+      delete protocol;
+      return rv;
+    }
+    NS_ADDREF(protocol);
+    rv = protocol->LoadUrl(aMailboxUrl, aDisplayConsumer);
+    NS_RELEASE(protocol); // after loading, someone else will have a ref cnt on the mailbox
+  }
+
+  return rv;
+}
+
+// This function takes a message uri, converts it into a file path & msgKey
+// pair. It then turns that into a mailbox url object. It also registers a url
+// listener if appropriate. AND it can take in a mailbox action and set that field
+// on the returned url as well.
+nsresult nsMailboxService::PrepareMessageUrl(const char * aSrcMsgMailboxURI, nsIUrlListener * aUrlListener,
+                                             nsMailboxAction aMailboxAction, nsIMailboxUrl ** aMailboxUrl,
+                                             nsIMsgWindow *msgWindow)
+{
+  nsresult rv = CallCreateInstance(NS_MAILBOXURL_CONTRACTID, aMailboxUrl);
+  if (NS_SUCCEEDED(rv) && aMailboxUrl && *aMailboxUrl)
+  {
+    // okay now generate the url string
+    char * urlSpec;
+    nsAutoCString folderURI;
+    nsMsgKey msgKey;
+    nsCString folderPath;
+    const char *part = PL_strstr(aSrcMsgMailboxURI, "part=");
+    const char *header = PL_strstr(aSrcMsgMailboxURI, "header=");
+    rv = nsParseLocalMessageURI(aSrcMsgMailboxURI, folderURI, &msgKey);
+    NS_ENSURE_SUCCESS(rv,rv);
+    rv = nsLocalURI2Path(kMailboxRootURI, folderURI.get(), folderPath);
+
+    if (NS_SUCCEEDED(rv))
+    {
+      // set up the url spec and initialize the url with it.
+      nsAutoCString buf;
+      MsgEscapeURL(folderPath,
+                   nsINetUtil::ESCAPE_URL_DIRECTORY | nsINetUtil::ESCAPE_URL_FORCED, buf);
+      if (mPrintingOperation)
+        urlSpec = PR_smprintf("mailbox://%s?number=%lu&header=print", buf.get(), msgKey);
+      else if (part)
+        urlSpec = PR_smprintf("mailbox://%s?number=%lu&%s", buf.get(), msgKey, part);
+      else if (header)
+        urlSpec = PR_smprintf("mailbox://%s?number=%lu&%s", buf.get(), msgKey, header);
+      else
+        urlSpec = PR_smprintf("mailbox://%s?number=%lu", buf.get(), msgKey);
+
+      nsCOMPtr <nsIMsgMailNewsUrl> url = do_QueryInterface(*aMailboxUrl);
+      rv = url->SetSpec(nsDependentCString(urlSpec));
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      PR_smprintf_free(urlSpec);
+
+      (*aMailboxUrl)->SetMailboxAction(aMailboxAction);
+
+      // set up the url listener
+      if (aUrlListener)
+        rv = url->RegisterListener(aUrlListener);
+
+      url->SetMsgWindow(msgWindow);
+      nsCOMPtr<nsIMsgMessageUrl> msgUrl = do_QueryInterface(url);
+      if (msgUrl)
+      {
+        msgUrl->SetOriginalSpec(aSrcMsgMailboxURI);
+        msgUrl->SetUri(aSrcMsgMailboxURI);
+      }
+
+    } // if we got a url
+  } // if we got a url
+
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxService::GetScheme(nsACString &aScheme)
+{
+  aScheme = "mailbox";
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxService::GetDefaultPort(int32_t *aDefaultPort)
+{
+  NS_ENSURE_ARG_POINTER(aDefaultPort);
+  *aDefaultPort = -1;  // mailbox doesn't use a port!!!!!
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxService::AllowPort(int32_t port, const char *scheme, bool *_retval)
+{
+  NS_ENSURE_ARG_POINTER(_retval);
+  // don't override anything.
+  *_retval = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxService::GetProtocolFlags(uint32_t *result)
+{
+  NS_ENSURE_ARG_POINTER(result);
+  *result = URI_STD | URI_FORBIDS_AUTOMATIC_DOCUMENT_REPLACEMENT |
+            URI_DANGEROUS_TO_LOAD | URI_FORBIDS_COOKIE_ACCESS
+#ifdef IS_ORIGIN_IS_FULL_SPEC_DEFINED
+            | ORIGIN_IS_FULL_SPEC
+#endif
+  ;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxService::NewURI(const nsACString &aSpec,
+                                       const char *aOriginCharset,
+                                       nsIURI *aBaseURI,
+                                       nsIURI **_retval)
+{
+  NS_ENSURE_ARG_POINTER(_retval);
+  *_retval = 0;
+  nsresult rv;
+  nsCOMPtr<nsIURI> aMsgUri = do_CreateInstance(NS_MAILBOXURL_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  // SetSpec calls below may fail if the mailbox url is of the form
+  // mailbox://<account>/<mailbox name>?... instead of
+  // mailbox://<path to folder>?.... This is the case for pop3 download urls.
+  // We know this, and the failure is harmless.
+  if (aBaseURI)
+  {
+    nsAutoCString newSpec;
+    rv = aBaseURI->Resolve(aSpec, newSpec);
+    NS_ENSURE_SUCCESS(rv, rv);
+    (void) aMsgUri->SetSpec(newSpec);
+  }
+  else
+  {
+    (void) aMsgUri->SetSpec(aSpec);
+  }
+  aMsgUri.swap(*_retval);
+
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxService::NewChannel(nsIURI *aURI, nsIChannel **_retval)
+{
+  return NewChannel2(aURI, nullptr, _retval);
+}
+
+NS_IMETHODIMP nsMailboxService::NewChannel2(nsIURI *aURI,
+                                            nsILoadInfo *aLoadInfo,
+                                            nsIChannel **_retval)
+{
+  NS_ENSURE_ARG_POINTER(aURI);
+  NS_ENSURE_ARG_POINTER(_retval);
+  nsresult rv = NS_OK;
+  nsAutoCString spec;
+  rv = aURI->GetSpec(spec);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (spec.Find("?uidl=") >= 0 || spec.Find("&uidl=") >= 0)
+  {
+    nsCOMPtr<nsIProtocolHandler> handler =
+             do_GetService(NS_POP3SERVICE_CONTRACTID1, &rv);
+    if (NS_SUCCEEDED(rv))
+    {
+      nsCOMPtr <nsIURI> pop3Uri;
+
+      rv = handler->NewURI(spec, "" /* ignored */, aURI, getter_AddRefs(pop3Uri));
+      NS_ENSURE_SUCCESS(rv, rv);
+      return handler->NewChannel2(pop3Uri, aLoadInfo, _retval);
+    }
+  }
+
+  RefPtr<nsMailboxProtocol> protocol = new nsMailboxProtocol(aURI);
+  if (!protocol) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  rv = protocol->Initialize(aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = protocol->SetLoadInfo(aLoadInfo);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return CallQueryInterface(protocol, _retval);
+}
+
+nsresult nsMailboxService::DisplayMessageForPrinting(const char* aMessageURI,
+                                                     nsISupports * aDisplayConsumer,
+                                                     nsIMsgWindow * aMsgWindow,
+                                                     nsIUrlListener * aUrlListener,
+                                                     nsIURI ** aURL)
+{
+  mPrintingOperation = true;
+  nsresult rv = FetchMessage(aMessageURI, aDisplayConsumer, aMsgWindow,aUrlListener, nullptr,
+    nsIMailboxUrl::ActionFetchMessage, nullptr, aURL);
+  mPrintingOperation = false;
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxService::Search(nsIMsgSearchSession *aSearchSession, nsIMsgWindow *aMsgWindow, nsIMsgFolder *aMsgFolder, const char *aMessageUri)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult
+nsMailboxService::DecomposeMailboxURI(const char * aMessageURI, nsIMsgFolder ** aFolder, nsMsgKey *aMsgKey)
+{
+  NS_ENSURE_ARG_POINTER(aMessageURI);
+  NS_ENSURE_ARG_POINTER(aFolder);
+  NS_ENSURE_ARG_POINTER(aMsgKey);
+
+  nsresult rv = NS_OK;
+  nsAutoCString folderURI;
+  rv = nsParseLocalMessageURI(aMessageURI, folderURI, aMsgKey);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr <nsIRDFService> rdf = do_GetService("@mozilla.org/rdf/rdf-service;1",&rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr<nsIRDFResource> res;
+  rv = rdf->GetResource(folderURI, getter_AddRefs(res));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = res->QueryInterface(NS_GET_IID(nsIMsgFolder), (void **) aFolder);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMailboxService::MessageURIToMsgHdr(const char *uri, nsIMsgDBHdr **_retval)
+{
+  NS_ENSURE_ARG_POINTER(uri);
+  NS_ENSURE_ARG_POINTER(_retval);
+
+  nsresult rv = NS_OK;
+
+  nsCOMPtr<nsIMsgFolder> folder;
+  nsMsgKey msgKey;
+
+  rv = DecomposeMailboxURI(uri, getter_AddRefs(folder), &msgKey);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = folder->GetMessageHeader(msgKey, _retval);
+  NS_ENSURE_SUCCESS(rv,rv);
+  return NS_OK;
+}

mailnews/local/src/nsMailboxService.h

@@ -0,0 +1,57 @@
+/* -*- 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/. */
+
+#ifndef nsMailboxService_h___
+#define nsMailboxService_h___
+
+#include "nscore.h"
+#include "nsISupports.h"
+
+#include "nsIMailboxService.h"
+#include "nsIMsgMessageService.h"
+#include "nsIMailboxUrl.h"
+#include "nsIURL.h"
+#include "nsIUrlListener.h"
+#include "nsIStreamListener.h"
+#include "nsIFile.h"
+#include "nsIProtocolHandler.h"
+#include "nsIRDFService.h"
+
+class nsMailboxService : public nsIMailboxService, public nsIMsgMessageService, public nsIMsgMessageFetchPartService, public nsIProtocolHandler
+{
+public:
+
+  nsMailboxService();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIMAILBOXSERVICE
+  NS_DECL_NSIMSGMESSAGESERVICE
+  NS_DECL_NSIMSGMESSAGEFETCHPARTSERVICE
+  NS_DECL_NSIPROTOCOLHANDLER
+
+protected:
+  virtual ~nsMailboxService();
+  bool          mPrintingOperation;
+
+  // helper functions used by the service
+  nsresult PrepareMessageUrl(const char * aSrcMsgMailboxURI, nsIUrlListener * aUrlListener,
+                 nsMailboxAction aMailboxAction, nsIMailboxUrl ** aMailboxUrl,
+                 nsIMsgWindow *msgWindow);
+
+  nsresult RunMailboxUrl(nsIURI * aMailboxUrl, nsISupports * aDisplayConsumer = nullptr);
+
+  nsresult FetchMessage(const char* aMessageURI,
+                        nsISupports * aDisplayConsumer,
+                        nsIMsgWindow * aMsgWindow,
+                        nsIUrlListener * aUrlListener,
+                        const char * aFileName, /* only used by open attachment */
+                        nsMailboxAction mailboxAction,
+                        const char * aCharsetOverride,
+                        nsIURI ** aURL);
+
+  nsresult DecomposeMailboxURI(const char * aMessageURI, nsIMsgFolder ** aFolder, nsMsgKey *aMsgKey);
+};
+
+#endif /* nsMailboxService_h___ */

mailnews/local/src/nsMailboxUrl.cpp

@@ -0,0 +1,556 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h"    // precompiled header...
+
+#include "nsIURI.h"
+#include "nsIMailboxUrl.h"
+#include "nsMailboxUrl.h"
+
+#include "nsStringGlue.h"
+#include "nsLocalUtils.h"
+#include "nsIMsgDatabase.h"
+#include "nsMsgDBCID.h"
+#include "nsMsgBaseCID.h"
+#include "nsIMsgHdr.h"
+
+#include "nsIMsgFolder.h"
+#include "prprf.h"
+#include "prmem.h"
+#include "nsIMsgMailSession.h"
+#include "nsNetUtil.h"
+#include "nsIFileURL.h"
+
+// this is totally lame and MUST be removed by M6
+// the real fix is to attach the URI to the URL as it runs through netlib
+// then grab it and use it on the other side
+#include "nsCOMPtr.h"
+#include "nsMsgBaseCID.h"
+#include "nsIMsgAccountManager.h"
+#include "nsMsgUtils.h"
+#include "mozilla/Services.h"
+
+// helper function for parsing the search field of a url
+char * extractAttributeValue(const char * searchString, const char * attributeName);
+
+nsMailboxUrl::nsMailboxUrl()
+{
+  m_mailboxAction = nsIMailboxUrl::ActionParseMailbox;
+  m_filePath = nullptr;
+  m_messageID = nullptr;
+  m_messageKey = nsMsgKey_None;
+  m_messageSize = 0;
+  m_messageFile = nullptr;
+  m_addDummyEnvelope = false;
+  m_canonicalLineEnding = false;
+  m_curMsgIndex = 0;
+}
+
+nsMailboxUrl::~nsMailboxUrl()
+{
+    PR_Free(m_messageID);
+}
+
+NS_IMPL_ADDREF_INHERITED(nsMailboxUrl, nsMsgMailNewsUrl)
+NS_IMPL_RELEASE_INHERITED(nsMailboxUrl, nsMsgMailNewsUrl)
+
+NS_INTERFACE_MAP_BEGIN(nsMailboxUrl)
+   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIMailboxUrl)
+   NS_INTERFACE_MAP_ENTRY(nsIMailboxUrl)
+   NS_INTERFACE_MAP_ENTRY(nsIMsgMessageUrl)
+   NS_INTERFACE_MAP_ENTRY(nsIMsgI18NUrl)
+NS_INTERFACE_MAP_END_INHERITING(nsMsgMailNewsUrl)
+
+////////////////////////////////////////////////////////////////////////////////////
+// Begin nsIMailboxUrl specific support
+////////////////////////////////////////////////////////////////////////////////////
+nsresult nsMailboxUrl::SetMailboxParser(nsIStreamListener * aMailboxParser)
+{
+  if (aMailboxParser)
+    m_mailboxParser = aMailboxParser;
+  return NS_OK;
+}
+
+nsresult nsMailboxUrl::GetMailboxParser(nsIStreamListener ** aConsumer)
+{
+  NS_ENSURE_ARG_POINTER(aConsumer);
+
+  NS_IF_ADDREF(*aConsumer = m_mailboxParser);
+  return  NS_OK;
+}
+
+nsresult nsMailboxUrl::SetMailboxCopyHandler(nsIStreamListener * aMailboxCopyHandler)
+{
+  if (aMailboxCopyHandler)
+    m_mailboxCopyHandler = aMailboxCopyHandler;
+  return NS_OK;
+}
+
+nsresult nsMailboxUrl::GetMailboxCopyHandler(nsIStreamListener ** aMailboxCopyHandler)
+{
+  NS_ENSURE_ARG_POINTER(aMailboxCopyHandler);
+
+  if (aMailboxCopyHandler)
+  {
+    *aMailboxCopyHandler = m_mailboxCopyHandler;
+    NS_IF_ADDREF(*aMailboxCopyHandler);
+  }
+
+  return  NS_OK;
+}
+
+nsresult nsMailboxUrl::GetMessageKey(nsMsgKey* aMessageKey)
+{
+  *aMessageKey = m_messageKey;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetMessageSize(uint32_t * aMessageSize)
+{
+  if (aMessageSize)
+  {
+    *aMessageSize = m_messageSize;
+    return NS_OK;
+  }
+  else
+    return NS_ERROR_NULL_POINTER;
+}
+
+nsresult nsMailboxUrl::SetMessageSize(uint32_t aMessageSize)
+{
+  m_messageSize = aMessageSize;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetPrincipalSpec(nsACString& aPrincipalSpec)
+{
+  nsCOMPtr<nsIMsgMailNewsUrl> mailnewsURL;
+  QueryInterface(NS_GET_IID(nsIMsgMailNewsUrl), getter_AddRefs(mailnewsURL));
+
+  nsAutoCString spec;
+  mailnewsURL->GetSpecIgnoringRef(spec);
+
+  // mailbox: URLs contain a lot of query parts. We want need a normalised form:
+  // mailbox:///path/to/folder?number=nn.
+  // We also need to translate the second form mailbox://user@domain@server/folder?number=nn.
+
+  char* messageKey = extractAttributeValue(spec.get(), "number=");
+
+  // Strip any query part beginning with ? or /;
+  int32_t ind = spec.Find("/;");
+  if (ind != kNotFound)
+    spec.SetLength(ind);
+
+  ind = spec.FindChar('?');
+  if (ind != kNotFound)
+    spec.SetLength(ind);
+
+  // Check for format lacking absolute path.
+  if (spec.Find("///") == kNotFound) {
+    nsCString folderPath;
+    nsresult rv = nsLocalURI2Path(kMailboxRootURI, spec.get(), folderPath);
+    if (NS_SUCCEEDED (rv)) {
+      nsAutoCString buf;
+      MsgEscapeURL(folderPath,
+                   nsINetUtil::ESCAPE_URL_DIRECTORY | nsINetUtil::ESCAPE_URL_FORCED, buf);
+      spec = NS_LITERAL_CSTRING("mailbox://") + buf;
+    }
+  }
+
+  spec += NS_LITERAL_CSTRING("?number=");
+  spec.Append(messageKey);
+  PR_Free(messageKey);
+
+  aPrincipalSpec.Assign(spec);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::SetUri(const char * aURI)
+{
+  mURI= aURI;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::CloneInternal(uint32_t aRefHandlingMode,
+                                          const nsACString& newRef,
+                                          nsIURI **_retval)
+{
+  nsresult rv = nsMsgMailNewsUrl::CloneInternal(aRefHandlingMode,
+                                                newRef, _retval);
+  NS_ENSURE_SUCCESS(rv, rv);
+  // also clone the mURI member, because GetUri below won't work if
+  // mURI isn't set due to nsIFile fun.
+  nsCOMPtr <nsIMsgMessageUrl> clonedUrl = do_QueryInterface(*_retval);
+  if (clonedUrl)
+    clonedUrl->SetUri(mURI.get());
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetUri(char ** aURI)
+{
+  // if we have been given a uri to associate with this url, then use it
+  // otherwise try to reconstruct a URI on the fly....
+
+  if (!mURI.IsEmpty())
+    *aURI = ToNewCString(mURI);
+  else
+  {
+    if (m_filePath)
+    {
+      nsAutoCString baseUri;
+      nsresult rv;
+      nsCOMPtr<nsIMsgAccountManager> accountManager =
+        do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID, &rv);
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      // we blow off errors here so that we can open attachments
+      // in .eml files.
+      (void) accountManager->FolderUriForPath(m_filePath, baseUri);
+      if (baseUri.IsEmpty()) {
+        rv = m_baseURL->GetSpec(baseUri);
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+      nsCString baseMessageURI;
+      nsCreateLocalBaseMessageURI(baseUri, baseMessageURI);
+      nsAutoCString uriStr;
+      nsBuildLocalMessageURI(baseMessageURI.get(), m_messageKey, uriStr);
+      *aURI = ToNewCString(uriStr);
+    }
+    else
+      *aURI = nullptr;
+  }
+
+  return NS_OK;
+}
+
+nsresult nsMailboxUrl::GetMsgHdrForKey(nsMsgKey  msgKey, nsIMsgDBHdr ** aMsgHdr)
+{
+  nsresult rv = NS_OK;
+  if (aMsgHdr && m_filePath)
+  {
+    nsCOMPtr<nsIMsgDatabase> mailDBFactory;
+    nsCOMPtr<nsIMsgDatabase> mailDB;
+    nsCOMPtr<nsIMsgDBService> msgDBService = do_GetService(NS_MSGDB_SERVICE_CONTRACTID, &rv);
+
+    if (msgDBService)
+      rv = msgDBService->OpenMailDBFromFile(m_filePath, nullptr, false,
+                                            false, getter_AddRefs(mailDB));
+    if (NS_SUCCEEDED(rv) && mailDB) // did we get a db back?
+      rv = mailDB->GetMsgHdrForKey(msgKey, aMsgHdr);
+    else
+    {
+      nsCOMPtr<nsIMsgWindow> msgWindow(do_QueryReferent(m_msgWindowWeak));
+      if (!msgWindow)
+      {
+        nsCOMPtr<nsIMsgMailSession> mailSession = do_GetService(NS_MSGMAILSESSION_CONTRACTID, &rv);
+        NS_ENSURE_SUCCESS(rv, rv);
+        mailSession->GetTopmostMsgWindow(getter_AddRefs(msgWindow));
+      }
+
+      // maybe this is .eml file we're trying to read. See if we can get a header from the header sink.
+      if (msgWindow)
+      {
+        nsCOMPtr<nsIMsgHeaderSink> headerSink;
+        msgWindow->GetMsgHeaderSink(getter_AddRefs(headerSink));
+        if (headerSink)
+        {
+          rv = headerSink->GetDummyMsgHeader(aMsgHdr);
+          if (NS_SUCCEEDED(rv))
+          {
+            int64_t fileSize = 0;
+            m_filePath->GetFileSize(&fileSize);
+            (*aMsgHdr)->SetMessageSize(fileSize);
+          }
+        }
+      }
+    }
+  }
+  else
+    rv = NS_ERROR_NULL_POINTER;
+
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetMessageHeader(nsIMsgDBHdr ** aMsgHdr)
+{
+  if (m_dummyHdr)
+  {
+    NS_IF_ADDREF(*aMsgHdr = m_dummyHdr);
+    return NS_OK;
+  }
+  return GetMsgHdrForKey(m_messageKey, aMsgHdr);
+}
+
+NS_IMETHODIMP nsMailboxUrl::SetMessageHeader(nsIMsgDBHdr *aMsgHdr)
+{
+  m_dummyHdr = aMsgHdr;
+  return NS_OK;
+}
+
+NS_IMPL_GETSET(nsMailboxUrl, AddDummyEnvelope, bool, m_addDummyEnvelope)
+NS_IMPL_GETSET(nsMailboxUrl, CanonicalLineEnding, bool, m_canonicalLineEnding)
+
+NS_IMETHODIMP
+nsMailboxUrl::GetOriginalSpec(char **aSpec)
+{
+  if (!aSpec || m_originalSpec.IsEmpty())
+    return NS_ERROR_NULL_POINTER;
+  *aSpec = ToNewCString(m_originalSpec);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMailboxUrl::SetOriginalSpec(const char *aSpec)
+{
+  m_originalSpec = aSpec;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::SetMessageFile(nsIFile * aFile)
+{
+  m_messageFile = aFile;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetMessageFile(nsIFile ** aFile)
+{
+  // why don't we return an error for null aFile?
+  if (aFile)
+    NS_IF_ADDREF(*aFile = m_messageFile);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::IsUrlType(uint32_t type, bool *isType)
+{
+  NS_ENSURE_ARG(isType);
+
+  switch(type)
+  {
+    case nsIMsgMailNewsUrl::eCopy:
+      *isType = (m_mailboxAction == nsIMailboxUrl::ActionCopyMessage);
+      break;
+    case nsIMsgMailNewsUrl::eMove:
+      *isType = (m_mailboxAction == nsIMailboxUrl::ActionMoveMessage);
+      break;
+    case nsIMsgMailNewsUrl::eDisplay:
+      *isType = (m_mailboxAction == nsIMailboxUrl::ActionFetchMessage ||
+                 m_mailboxAction == nsIMailboxUrl::ActionFetchPart);
+      break;
+    default:
+      *isType = false;
+  };
+
+  return NS_OK;
+
+}
+
+////////////////////////////////////////////////////////////////////////////////////
+// End nsIMailboxUrl specific support
+////////////////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////////////
+// possible search part phrases include: MessageID=id&number=MessageKey
+
+nsresult nsMailboxUrl::ParseSearchPart()
+{
+  nsAutoCString searchPart;
+  nsresult rv = GetQuery(searchPart);
+  // add code to this function to decompose everything past the '?'.....
+  if (NS_SUCCEEDED(rv) && !searchPart.IsEmpty())
+  {
+    // the action for this mailbox must be a display message...
+    char * msgPart = extractAttributeValue(searchPart.get(), "part=");
+    if (msgPart)  // if we have a part in the url then we must be fetching just the part.
+      m_mailboxAction = nsIMailboxUrl::ActionFetchPart;
+    else
+      m_mailboxAction = nsIMailboxUrl::ActionFetchMessage;
+
+    char * messageKey = extractAttributeValue(searchPart.get(), "number=");
+    m_messageID = extractAttributeValue(searchPart.get(),"messageid=");
+    if (messageKey)
+      m_messageKey = (nsMsgKey) ParseUint64Str(messageKey); // convert to a uint32_t...
+
+    PR_Free(msgPart);
+    PR_Free(messageKey);
+  }
+  else
+    m_mailboxAction = nsIMailboxUrl::ActionParseMailbox;
+
+  return rv;
+}
+
+// warning: don't assume when parsing the url that the protocol part is "news"...
+nsresult nsMailboxUrl::ParseUrl()
+{
+  GetFilePath(m_file);
+
+  ParseSearchPart();
+  // ### fix me.
+  // this hack is to avoid asserting on every local message loaded because the security manager
+  // is creating an empty "mailbox://" uri for every message.
+  if (m_file.Length() < 2)
+    m_filePath = nullptr;
+  else
+  {
+    nsCString fileUri("file://");
+    fileUri.Append(m_file);
+    nsresult rv;
+    nsCOMPtr<nsIIOService> ioService =
+      mozilla::services::GetIOService();
+    NS_ENSURE_TRUE(ioService, NS_ERROR_UNEXPECTED);
+    nsCOMPtr <nsIURI> uri;
+    rv = ioService->NewURI(fileUri, nullptr, nullptr, getter_AddRefs(uri));
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr <nsIFileURL> fileURL = do_QueryInterface(uri);
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr <nsIFile> fileURLFile;
+    fileURL->GetFile(getter_AddRefs(fileURLFile));
+    m_filePath = do_QueryInterface(fileURLFile, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  GetPath(m_file);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::SetSpec(const nsACString &aSpec)
+{
+  nsresult rv = nsMsgMailNewsUrl::SetSpec(aSpec);
+  if (NS_SUCCEEDED(rv))
+    rv = ParseUrl();
+  return rv;
+}
+
+NS_IMETHODIMP nsMailboxUrl::SetQuery(const nsACString &aQuery)
+{
+  nsresult rv = nsMsgMailNewsUrl::SetQuery(aQuery);
+  if (NS_SUCCEEDED(rv))
+    rv = ParseUrl();
+  return rv;
+}
+
+// takes a string like ?messageID=fooo&number=MsgKey and returns a new string
+// containing just the attribute value. i.e you could pass in this string with
+// an attribute name of messageID and I'll return fooo. Use PR_Free to delete
+// this string...
+
+// Assumption: attribute pairs in the string are separated by '&'.
+char * extractAttributeValue(const char * searchString, const char * attributeName)
+{
+  char * attributeValue = nullptr;
+
+  if (searchString && attributeName)
+  {
+    // search the string for attributeName
+    uint32_t attributeNameSize = PL_strlen(attributeName);
+    char * startOfAttribute = PL_strcasestr(searchString, attributeName);
+    if (startOfAttribute)
+    {
+      startOfAttribute += attributeNameSize; // skip over the attributeName
+      if (startOfAttribute) // is there something after the attribute name
+      {
+        char * endOfAttribute = startOfAttribute ? PL_strchr(startOfAttribute, '&') : nullptr;
+        nsDependentCString attributeValueStr;
+        if (startOfAttribute && endOfAttribute) // is there text after attribute value
+          attributeValueStr.Assign(startOfAttribute, endOfAttribute - startOfAttribute);
+        else // there is nothing left so eat up rest of line.
+          attributeValueStr.Assign(startOfAttribute);
+
+        // now unescape the string...
+        nsCString unescapedValue;
+        MsgUnescapeString(attributeValueStr, 0, unescapedValue);
+        attributeValue = PL_strdup(unescapedValue.get());
+      } // if we have a attribute value
+
+    } // if we have a attribute name
+  } // if we got non-null search string and attribute name values
+
+  return attributeValue;
+}
+
+// nsIMsgI18NUrl support
+
+nsresult nsMailboxUrl::GetFolder(nsIMsgFolder **msgFolder)
+{
+  // if we have a RDF URI, then try to get the folder for that URI and then ask the folder
+  // for it's charset....
+  nsCString uri;
+  GetUri(getter_Copies(uri));
+  NS_ENSURE_TRUE(!uri.IsEmpty(), NS_ERROR_FAILURE);
+  nsCOMPtr<nsIMsgDBHdr> msg;
+  GetMsgDBHdrFromURI(uri.get(), getter_AddRefs(msg));
+  if (!msg)
+    return NS_ERROR_FAILURE;
+  return msg->GetFolder(msgFolder);
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetFolderCharset(char ** aCharacterSet)
+{
+  NS_ENSURE_ARG_POINTER(aCharacterSet);
+  nsCOMPtr<nsIMsgFolder> folder;
+  nsresult rv = GetFolder(getter_AddRefs(folder));
+  
+  // In cases where a file is not associated with a folder, for
+  // example standalone .eml files, failure is normal.
+  if (NS_FAILED(rv))
+    return rv;
+  nsCString tmpStr;
+  folder->GetCharset(tmpStr);
+  *aCharacterSet = ToNewCString(tmpStr);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetFolderCharsetOverride(bool * aCharacterSetOverride)
+{
+  nsCOMPtr<nsIMsgFolder> folder;
+  nsresult rv = GetFolder(getter_AddRefs(folder));
+  NS_ENSURE_SUCCESS(rv,rv);
+  NS_ENSURE_TRUE(folder, NS_ERROR_FAILURE);
+  folder->GetCharsetOverride(aCharacterSetOverride);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetCharsetOverRide(char ** aCharacterSet)
+{
+  if (!mCharsetOverride.IsEmpty())
+    *aCharacterSet = ToNewCString(mCharsetOverride);
+  else
+    *aCharacterSet = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::SetCharsetOverRide(const char * aCharacterSet)
+{
+  mCharsetOverride = aCharacterSet;
+  return NS_OK;
+}
+
+/* void setMoveCopyMsgKeys (out nsMsgKey keysToFlag, in long numKeys); */
+NS_IMETHODIMP nsMailboxUrl::SetMoveCopyMsgKeys(nsMsgKey *keysToFlag, int32_t numKeys)
+{
+  m_keys.ReplaceElementsAt(0, m_keys.Length(), keysToFlag, numKeys);
+  if (!m_keys.IsEmpty() && m_messageKey == nsMsgKey_None)
+    m_messageKey = m_keys[0];
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetMoveCopyMsgHdrForIndex(uint32_t msgIndex, nsIMsgDBHdr **msgHdr)
+{
+  NS_ENSURE_ARG(msgHdr);
+  if (msgIndex < m_keys.Length())
+  {
+    nsMsgKey nextKey = m_keys[msgIndex];
+    return GetMsgHdrForKey(nextKey, msgHdr);
+  }
+  return NS_MSG_MESSAGE_NOT_FOUND;
+}
+
+NS_IMETHODIMP nsMailboxUrl::GetNumMoveCopyMsgs(uint32_t *numMsgs)
+{
+  NS_ENSURE_ARG(numMsgs);
+  *numMsgs = m_keys.Length();
+  return NS_OK;
+}

mailnews/local/src/nsMailboxUrl.h

@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef nsMailboxUrl_h__
+#define nsMailboxUrl_h__
+
+#include "mozilla/Attributes.h"
+#include "nsIMailboxUrl.h"
+#include "nsMsgMailNewsUrl.h"
+#include "nsIStreamListener.h"
+#include "nsIFile.h"
+#include "nsCOMPtr.h"
+#include "MailNewsTypes.h"
+#include "nsTArray.h"
+
+class nsMailboxUrl : public nsIMailboxUrl, public nsMsgMailNewsUrl, public nsIMsgMessageUrl, public nsIMsgI18NUrl
+{
+public:
+  // nsIURI over-ride...
+  NS_IMETHOD SetSpec(const nsACString &aSpec) override;
+  NS_IMETHOD SetQuery(const nsACString &aQuery) override;
+
+  // from nsIMailboxUrl:
+  NS_IMETHOD SetMailboxParser(nsIStreamListener * aConsumer) override;
+  NS_IMETHOD GetMailboxParser(nsIStreamListener ** aConsumer) override;
+  NS_IMETHOD SetMailboxCopyHandler(nsIStreamListener *  aConsumer) override;
+  NS_IMETHOD GetMailboxCopyHandler(nsIStreamListener ** aConsumer) override;
+
+  NS_IMETHOD GetMessageKey(nsMsgKey* aMessageKey) override;
+  NS_IMETHOD GetMessageSize(uint32_t *aMessageSize) override;
+  NS_IMETHOD SetMessageSize(uint32_t aMessageSize) override;
+  NS_IMETHOD GetMailboxAction(nsMailboxAction *result) override
+  {
+    NS_ENSURE_ARG_POINTER(result);
+    *result = m_mailboxAction;
+    return NS_OK;
+  }
+  NS_IMETHOD SetMailboxAction(nsMailboxAction aAction) override
+  {
+    m_mailboxAction = aAction;
+    return NS_OK;
+  }
+  NS_IMETHOD IsUrlType(uint32_t type, bool *isType) override;
+  NS_IMETHOD SetMoveCopyMsgKeys(nsMsgKey *keysToFlag, int32_t numKeys) override;
+  NS_IMETHOD GetMoveCopyMsgHdrForIndex(uint32_t msgIndex, nsIMsgDBHdr **msgHdr) override;
+  NS_IMETHOD GetNumMoveCopyMsgs(uint32_t *numMsgs) override;
+  NS_IMETHOD GetCurMoveCopyMsgIndex(uint32_t *result) override
+  {
+    NS_ENSURE_ARG_POINTER(result);
+    *result = m_curMsgIndex;
+    return NS_OK;
+  }
+  NS_IMETHOD SetCurMoveCopyMsgIndex(uint32_t aIndex) override
+  {
+    m_curMsgIndex = aIndex;
+    return NS_OK;
+  }
+
+  NS_IMETHOD GetFolder(nsIMsgFolder **msgFolder) override;
+
+  // nsIMsgMailNewsUrl override
+  NS_IMETHOD CloneInternal(uint32_t aRefHandlingMode,
+                           const nsACString& newRef,
+                           nsIURI **_retval) override;
+
+  // nsMailboxUrl
+  nsMailboxUrl();
+  NS_DECL_NSIMSGMESSAGEURL
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSIMSGI18NURL
+
+protected:
+  virtual ~nsMailboxUrl();
+  // protocol specific code to parse a url...
+  virtual nsresult ParseUrl();
+  nsresult GetMsgHdrForKey(nsMsgKey  msgKey, nsIMsgDBHdr ** aMsgHdr);
+
+  // mailboxurl specific state
+  nsCOMPtr<nsIStreamListener> m_mailboxParser;
+  nsCOMPtr<nsIStreamListener> m_mailboxCopyHandler;
+
+  nsMailboxAction m_mailboxAction; // the action this url represents...parse mailbox, display messages, etc.
+  nsCOMPtr <nsIFile>  m_filePath;
+  char *m_messageID;
+  uint32_t m_messageSize;
+  nsMsgKey m_messageKey;
+  nsCString m_file;
+  // This is currently only set when we're doing something with a .eml file.
+  // If that changes, we should change the name of this var.
+  nsCOMPtr<nsIMsgDBHdr> m_dummyHdr;
+
+  // used by save message to disk
+  nsCOMPtr<nsIFile> m_messageFile;
+  bool                  m_addDummyEnvelope;
+  bool                  m_canonicalLineEnding;
+  nsresult ParseSearchPart();
+
+  // for multiple msg move/copy
+  nsTArray<nsMsgKey> m_keys;
+  int32_t m_curMsgIndex;
+
+  // truncated message support
+  nsCString m_originalSpec;
+  nsCString mURI; // the RDF URI associated with this url.
+  nsCString mCharsetOverride; // used by nsIMsgI18NUrl...
+};
+
+#endif // nsMailboxUrl_h__

mailnews/local/src/nsMovemailIncomingServer.cpp

@@ -0,0 +1,178 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "nsMsgLocalCID.h"
+#include "nsMsgFolderFlags.h"
+#include "nsIMsgLocalMailFolder.h"
+#include "nsIMovemailService.h"
+#include "nsIFile.h"
+#include "msgCore.h" // pre-compiled headers
+#include "nsMovemailIncomingServer.h"
+#include "nsServiceManagerUtils.h"
+
+
+static NS_DEFINE_CID(kCMovemailServiceCID, NS_MOVEMAILSERVICE_CID);
+
+
+NS_IMPL_ISUPPORTS_INHERITED(nsMovemailIncomingServer,
+                             nsMsgIncomingServer,
+                             nsIMovemailIncomingServer,
+                             nsILocalMailIncomingServer)
+
+                            
+
+nsMovemailIncomingServer::nsMovemailIncomingServer()
+{    
+    m_canHaveFilters = true;
+}
+
+nsMovemailIncomingServer::~nsMovemailIncomingServer()
+{
+}
+
+NS_IMETHODIMP 
+nsMovemailIncomingServer::PerformBiff(nsIMsgWindow *aMsgWindow)
+{
+    nsresult rv;
+    nsCOMPtr<nsIMovemailService> movemailService(do_GetService(
+                                                 kCMovemailServiceCID, &rv));
+    if (NS_FAILED(rv)) return rv;
+    nsCOMPtr<nsIMsgFolder> inbox;
+    nsCOMPtr<nsIMsgFolder> rootMsgFolder;
+    nsCOMPtr<nsIUrlListener> urlListener;
+    rv = GetRootMsgFolder(getter_AddRefs(rootMsgFolder));
+    if(NS_SUCCEEDED(rv) && rootMsgFolder)
+    {
+         rootMsgFolder->GetFolderWithFlags(nsMsgFolderFlags::Inbox,
+                                           getter_AddRefs(inbox));
+         if (!inbox) return NS_ERROR_FAILURE;
+    }
+
+    SetPerformingBiff(true);
+    urlListener = do_QueryInterface(inbox);
+
+    bool downloadOnBiff = false;
+    rv = GetDownloadOnBiff(&downloadOnBiff);
+    if (downloadOnBiff)
+    {
+       nsCOMPtr <nsIMsgLocalMailFolder> localInbox = do_QueryInterface(inbox,
+                                                                       &rv);
+       if (localInbox && NS_SUCCEEDED(rv))
+       {
+           bool valid = false;
+           nsCOMPtr <nsIMsgDatabase> db;
+           rv = inbox->GetMsgDatabase(getter_AddRefs(db));
+           if (NS_SUCCEEDED(rv) && db)
+           {
+               rv = db->GetSummaryValid(&valid);
+           }
+           if (NS_SUCCEEDED(rv) && valid)
+           {
+               rv = movemailService->GetNewMail(aMsgWindow, urlListener, inbox,
+                                                this, nullptr);
+           }
+           else
+           {
+              bool isLocked;
+              inbox->GetLocked(&isLocked);
+              if (!isLocked)
+              {
+                 rv = localInbox->ParseFolder(aMsgWindow, urlListener);
+              }
+              if (NS_SUCCEEDED(rv))
+              {
+                 rv = localInbox->SetCheckForNewMessagesAfterParsing(true);
+              }
+           }
+       }
+    }
+    else
+    {
+        movemailService->CheckForNewMail(urlListener, inbox, this, nullptr); 
+    }
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailIncomingServer::SetFlagsOnDefaultMailboxes()
+{
+    nsCOMPtr<nsIMsgFolder> rootFolder;
+    nsresult rv = GetRootFolder(getter_AddRefs(rootFolder));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIMsgLocalMailFolder> localFolder =
+        do_QueryInterface(rootFolder, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    return localFolder->SetFlagsOnDefaultMailboxes(nsMsgFolderFlags::SpecialUse);
+}
+
+NS_IMETHODIMP nsMovemailIncomingServer::CreateDefaultMailboxes()
+{
+  nsresult rv = CreateLocalFolder(NS_LITERAL_STRING("Inbox"));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return CreateLocalFolder(NS_LITERAL_STRING("Trash"));
+}
+
+
+NS_IMETHODIMP
+nsMovemailIncomingServer::GetNewMail(nsIMsgWindow *aMsgWindow,
+                                     nsIUrlListener *aUrlListener,
+                                     nsIMsgFolder *aMsgFolder,
+                                     nsIURI **aResult)
+{
+    nsresult rv;
+    
+    nsCOMPtr<nsIMovemailService> movemailService = 
+             do_GetService(kCMovemailServiceCID, &rv);
+    
+    if (NS_FAILED(rv)) return rv;
+    
+    rv = movemailService->GetNewMail(aMsgWindow, aUrlListener,
+                                     aMsgFolder, this, aResult);
+
+    return rv;
+}        
+
+NS_IMETHODIMP
+nsMovemailIncomingServer::GetDownloadMessagesAtStartup(bool *getMessagesAtStartup)
+{
+    NS_ENSURE_ARG_POINTER(getMessagesAtStartup);
+    *getMessagesAtStartup = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailIncomingServer::GetCanBeDefaultServer(bool *aCanBeDefaultServer)
+{
+  NS_ENSURE_ARG_POINTER(aCanBeDefaultServer);
+  *aCanBeDefaultServer = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailIncomingServer::GetCanSearchMessages(bool *canSearchMessages)
+{
+    NS_ENSURE_ARG_POINTER(canSearchMessages);
+    *canSearchMessages = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsMovemailIncomingServer::GetServerRequiresPasswordForBiff(bool *aServerRequiresPasswordForBiff)
+{
+    NS_ENSURE_ARG_POINTER(aServerRequiresPasswordForBiff);
+    *aServerRequiresPasswordForBiff = false;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsMovemailIncomingServer::GetAccountManagerChrome(nsAString& aResult)
+{
+    aResult.AssignLiteral("am-main.xul");
+    return NS_OK;
+}

mailnews/local/src/nsMovemailIncomingServer.h

@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef __nsMovemailIncomingServer_h
+#define __nsMovemailIncomingServer_h
+
+#include "mozilla/Attributes.h"
+#include "msgCore.h"
+#include "nsIMovemailIncomingServer.h"
+#include "nsILocalMailIncomingServer.h"
+#include "nsMailboxServer.h"
+
+/* get some implementation from nsMsgIncomingServer */
+class nsMovemailIncomingServer : public nsMailboxServer,
+                                 public nsIMovemailIncomingServer,
+                                 public nsILocalMailIncomingServer
+
+{
+public:
+    NS_DECL_ISUPPORTS_INHERITED
+    NS_DECL_NSIMOVEMAILINCOMINGSERVER
+    NS_DECL_NSILOCALMAILINCOMINGSERVER
+
+    nsMovemailIncomingServer();
+
+    NS_IMETHOD PerformBiff(nsIMsgWindow *aMsgWindow) override;
+    NS_IMETHOD GetDownloadMessagesAtStartup(bool *getMessages) override;
+    NS_IMETHOD GetCanBeDefaultServer(bool *canBeDefaultServer) override;
+    NS_IMETHOD GetCanSearchMessages(bool *canSearchMessages) override;
+    NS_IMETHOD GetServerRequiresPasswordForBiff(bool *aServerRequiresPasswordForBiff) override;
+    NS_IMETHOD GetAccountManagerChrome(nsAString& aResult) override;
+
+private:
+    virtual ~nsMovemailIncomingServer();
+};
+
+
+#endif

mailnews/local/src/nsMovemailService.cpp

@@ -0,0 +1,694 @@
+/* -*- 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 <unistd.h>    // for link(), used in spool-file locking
+
+#include "prenv.h"
+#include "private/pprio.h"     // for our kernel-based locking
+#include "nspr.h"
+
+#include "msgCore.h"    // precompiled header...
+
+#include "nsMovemailService.h"
+#include "nsIMovemailService.h"
+#include "nsIMsgIncomingServer.h"
+#include "nsIMovemailIncomingServer.h"
+#include "nsIMsgProtocolInfo.h"
+#include "nsParseMailbox.h"
+#include "nsIMsgFolder.h"
+#include "nsIPrompt.h"
+
+#include "nsIFile.h"
+#include "nsMailDirServiceDefs.h"
+#include "nsMsgUtils.h"
+
+#include "nsCOMPtr.h"
+#include "nsMsgFolderFlags.h"
+
+#include "nsILineInputStream.h"
+#include "nsISeekableStream.h"
+#include "nsNetUtil.h"
+#include "nsAutoPtr.h"
+#include "nsIStringBundle.h"
+#include "nsIMsgPluggableStore.h"
+#include "mozilla/Services.h"
+#include "nsIInputStream.h"
+#include "nsIOutputStream.h"
+
+#include "mozilla/Logging.h"
+#if defined(PR_LOGGING)
+//
+// export NSPR_LOG_MODULES=Movemail:5
+//
+static PRLogModuleInfo *gMovemailLog = nullptr;
+#define LOG(args) MOZ_LOG(gMovemailLog, mozilla::LogLevel::Debug, args)
+#else
+#define LOG(args)
+#endif
+
+#define PREF_MAIL_ROOT_MOVEMAIL "mail.root.movemail"            // old - for backward compatibility only
+#define PREF_MAIL_ROOT_MOVEMAIL_REL "mail.root.movemail-rel"
+
+#define LOCK_SUFFIX ".lock"
+#define MOZLOCK_SUFFIX ".mozlock"
+
+const char * gDefaultSpoolPaths[] = {
+  "/var/spool/mail/",
+  "/usr/spool/mail/",
+  "/var/mail/",
+  "/usr/mail/"
+};
+#define NUM_DEFAULT_SPOOL_PATHS (sizeof(gDefaultSpoolPaths)/sizeof(gDefaultSpoolPaths[0]))
+
+namespace {
+class MOZ_STACK_CLASS SpoolLock
+{
+public:
+  /**
+   * Try to create a lock for the spool file while we operate on it.
+   *
+   * @param aSpoolName  The path to the spool file.
+   * @param aSeconds    The number of seconds to retry the locking.
+   * @param aMovemail   The movemail service requesting the lock.
+   * @param aServer     The nsIMsgIncomingServer requesting the lock.
+   */
+  SpoolLock(nsACString *aSpoolPath, int aSeconds, nsMovemailService &aMovemail,
+            nsIMsgIncomingServer *aServer);
+
+  ~SpoolLock();
+
+  bool isLocked();
+
+private:
+  bool mLocked;
+  nsCString mSpoolName;
+  bool mUsingLockFile;
+  RefPtr<nsMovemailService> mOwningService;
+  nsCOMPtr<nsIMsgIncomingServer> mServer;
+
+  bool ObtainSpoolLock(unsigned int aSeconds);
+  bool YieldSpoolLock();
+};
+
+}
+
+nsMovemailService::nsMovemailService()
+{
+#if defined(PR_LOGGING)
+  if (!gMovemailLog)
+      gMovemailLog = PR_NewLogModule("Movemail");
+#endif
+  LOG(("nsMovemailService created: 0x%x\n", this));
+}
+
+nsMovemailService::~nsMovemailService()
+{}
+
+
+NS_IMPL_ISUPPORTS(nsMovemailService,
+                   nsIMovemailService,
+                   nsIMsgProtocolInfo)
+
+
+NS_IMETHODIMP
+nsMovemailService::CheckForNewMail(nsIUrlListener * aUrlListener,
+                                   nsIMsgFolder *inbox,
+                                   nsIMovemailIncomingServer *movemailServer,
+                                   nsIURI ** aURL)
+{
+  nsresult rv = NS_OK;
+  LOG(("nsMovemailService::CheckForNewMail\n"));
+  return rv;
+}
+
+void
+nsMovemailService::Error(const char* errorCode,
+                         const char16_t **params,
+                         uint32_t length)
+{
+  if (!mMsgWindow) return;
+
+  nsCOMPtr<nsIPrompt> dialog;
+  nsresult rv = mMsgWindow->GetPromptDialog(getter_AddRefs(dialog));
+  if (NS_FAILED(rv))
+    return;
+
+  nsCOMPtr<nsIStringBundleService> bundleService =
+    mozilla::services::GetStringBundleService();
+  if (!bundleService)
+    return;
+  nsCOMPtr<nsIStringBundle> bundle;
+  rv = bundleService->CreateBundle("chrome://messenger/locale/localMsgs.properties", getter_AddRefs(bundle));
+  if (NS_FAILED(rv))
+    return;
+
+  nsString errStr;
+  // Format the error string if necessary
+  if (params)
+    bundle->FormatStringFromName(NS_ConvertASCIItoUTF16(errorCode).get(),
+                                 params, length, getter_Copies(errStr));
+  else
+    bundle->GetStringFromName(NS_ConvertASCIItoUTF16(errorCode).get(),
+                              getter_Copies(errStr));
+
+  if (!errStr.IsEmpty()) {
+    dialog->Alert(nullptr, errStr.get());
+  }
+}
+
+SpoolLock::SpoolLock(nsACString *aSpoolName, int aSeconds,
+                     nsMovemailService &aMovemail,
+                     nsIMsgIncomingServer *aServer)
+: mLocked(false),
+  mSpoolName(*aSpoolName),
+  mOwningService(&aMovemail),
+  mServer(aServer)
+{
+  if (!ObtainSpoolLock(aSeconds)) {
+    NS_ConvertUTF8toUTF16 lockFile(mSpoolName);
+    lockFile.AppendLiteral(LOCK_SUFFIX);
+    const char16_t* params[] = { lockFile.get() };
+    mOwningService->Error("movemailCantCreateLock", params, 1);
+    return;
+  }
+  mServer->SetServerBusy(true);
+  mLocked = true;
+}
+
+SpoolLock::~SpoolLock() {
+  if (mLocked && !YieldSpoolLock()) {
+    NS_ConvertUTF8toUTF16 lockFile(mSpoolName);
+    lockFile.AppendLiteral(LOCK_SUFFIX);
+    const char16_t* params[] = { lockFile.get() };
+    mOwningService->Error("movemailCantDeleteLock", params, 1);
+  }
+  mServer->SetServerBusy(false);
+}
+
+bool
+SpoolLock::isLocked() {
+  return mLocked;
+}
+
+bool
+SpoolLock::ObtainSpoolLock(unsigned int aSeconds /* number of seconds to retry */)
+{
+  /*
+   * Locking procedures:
+   * If the directory is not writable, we want to use the appropriate system
+   * utilites to lock the file.
+   * If the directory is writable, we want to go through the create-and-link
+   * locking procedures to make it atomic for certain networked file systems.
+   * This involves creating a .mozlock file and attempting to hard-link it to
+   * the customary .lock file.
+   */
+  nsCOMPtr<nsIFile> spoolFile;
+  nsresult rv = NS_NewNativeLocalFile(mSpoolName,
+                                      true,
+                                      getter_AddRefs(spoolFile));
+  NS_ENSURE_SUCCESS(rv, false);
+
+  nsCOMPtr<nsIFile> directory;
+  rv = spoolFile->GetParent(getter_AddRefs(directory));
+  NS_ENSURE_SUCCESS(rv, false);
+
+  rv = directory->IsWritable(&mUsingLockFile);
+  NS_ENSURE_SUCCESS(rv, false);
+
+  if (!mUsingLockFile) {
+    LOG(("Attempting to use kernel file lock"));
+    PRFileDesc *fd;
+    rv = spoolFile->OpenNSPRFileDesc(PR_RDWR, 0, &fd);
+    NS_ENSURE_SUCCESS(rv, false);
+    PRStatus lock_result;
+    unsigned int retry_count = 0;
+
+    do {
+      lock_result = PR_TLockFile(fd);
+  
+      retry_count++;
+      LOG(("Attempt %d of %d to lock file", retry_count, aSeconds));
+      if (aSeconds > 0 && lock_result == PR_FAILURE) {
+        // pause 1sec, waiting for .lock to go away
+        PRIntervalTime sleepTime = 1000; // 1 second
+        PR_Sleep(sleepTime);
+      }
+    } while (lock_result == PR_FAILURE && retry_count < aSeconds);
+    LOG(("Lock result: %d", lock_result));
+    PR_Close(fd);
+    return lock_result == PR_SUCCESS;
+  }
+  // How to lock using files:
+  // step 1: create SPOOLNAME.mozlock
+  //        1a: can remove it if it already exists (probably crash-droppings)
+  // step 2: hard-link SPOOLNAME.mozlock to SPOOLNAME.lock for NFS atomicity
+  //        2a: if SPOOLNAME.lock is >60sec old then nuke it from orbit
+  //        2b: repeat step 2 until retry-count expired or hard-link succeeds
+  // step 3: remove SPOOLNAME.mozlock
+  // step 4: If step 2 hard-link failed, fail hard; we do not hold the lock
+  // DONE.
+  //
+  // (step 2a not yet implemented)
+
+  nsAutoCString mozlockstr(mSpoolName);
+  mozlockstr.AppendLiteral(MOZLOCK_SUFFIX);
+  nsAutoCString lockstr(mSpoolName);
+  lockstr.AppendLiteral(LOCK_SUFFIX);
+
+  // Create nsIFile for the spool.mozlock file
+  nsCOMPtr<nsIFile> tmplocfile;
+  rv = NS_NewNativeLocalFile(mozlockstr, true, getter_AddRefs(tmplocfile));
+  NS_ENSURE_SUCCESS(rv, false);
+
+  // THOUGHT: hmm, perhaps use MakeUnique to generate us a unique mozlock?
+  // ... perhaps not, MakeUnique implementation looks racey -- use mktemp()?
+
+  // step 1: create SPOOLNAME.mozlock
+  rv = tmplocfile->Create(nsIFile::NORMAL_FILE_TYPE, 0666);
+  if (NS_FAILED(rv) && rv != NS_ERROR_FILE_ALREADY_EXISTS) {
+    // can't create our .mozlock file... game over already
+    LOG(("Failed to create file %s\n", mozlockstr.get()));
+    return false;
+  }
+
+  // step 2: hard-link .mozlock file to .lock file (this wackiness
+  //         is necessary for non-racey locking on NFS-mounted spool dirs)
+  // n.b. XPCOM utilities don't support hard-linking yet, so we
+  // skip out to <unistd.h> and the POSIX interface for link()
+  int link_result = 0;
+  unsigned int retry_count = 0;
+
+  do {
+    link_result = link(mozlockstr.get(), lockstr.get());
+
+    retry_count++;
+    LOG(("Attempt %d of %d to create lock file", retry_count, aSeconds));
+
+    if (aSeconds > 0 && link_result == -1) {
+      // pause 1sec, waiting for .lock to go away
+      PRIntervalTime sleepTime = 1000; // 1 second
+      PR_Sleep(sleepTime);
+    }
+  } while (link_result == -1 && retry_count < aSeconds);
+  LOG(("Link result: %d", link_result));
+
+  // step 3: remove .mozlock file, in any case
+  rv = tmplocfile->Remove(false /* non-recursive */);
+  if (NS_FAILED(rv)) {
+    // Could not delete our .mozlock file... very unusual, but
+    // not fatal.
+    LOG(("Unable to delete %s", mozlockstr.get()));
+  }
+
+  // step 4: now we know whether we succeeded or failed
+  return link_result == 0;
+}
+
+
+/**
+ * Remove our mail-spool-file lock (n.b. we should only try this if
+ * we're the ones who made the lock in the first place! I.e. if mLocked is true.)
+ */
+bool
+SpoolLock::YieldSpoolLock()
+{
+  LOG(("YieldSpoolLock(%s)", mSpoolName.get()));
+
+  if (!mUsingLockFile) {
+    nsCOMPtr<nsIFile> spoolFile;
+    nsresult rv = NS_NewNativeLocalFile(mSpoolName,
+                                        true,
+                                        getter_AddRefs(spoolFile));
+    NS_ENSURE_SUCCESS(rv, false);
+
+    PRFileDesc *fd;
+    rv = spoolFile->OpenNSPRFileDesc(PR_RDWR, 0, &fd);
+    NS_ENSURE_SUCCESS(rv, false);
+
+    bool unlockSucceeded = PR_UnlockFile(fd) == PR_SUCCESS;
+    PR_Close(fd);
+    if (unlockSucceeded)
+      LOG(("YieldSpoolLock was successful."));
+    return unlockSucceeded;
+  }
+
+  nsAutoCString lockstr(mSpoolName);
+  lockstr.AppendLiteral(LOCK_SUFFIX);
+
+  nsresult rv;
+
+  // Create nsIFile for the spool.lock file
+  nsCOMPtr<nsIFile> locklocfile;
+  rv = NS_NewNativeLocalFile(lockstr, true, getter_AddRefs(locklocfile));
+  NS_ENSURE_SUCCESS(rv, false);
+
+  // Check if the lock file exists
+  bool exists;
+  rv = locklocfile->Exists(&exists);
+  NS_ENSURE_SUCCESS(rv, false);
+
+  // Delete the file if it exists
+  if (exists) {
+    rv = locklocfile->Remove(false /* non-recursive */);
+    NS_ENSURE_SUCCESS(rv, false);
+  }
+
+  LOG(("YieldSpoolLock was successful."));
+
+  // Success.
+  return true;
+}
+
+static nsresult
+LocateSpoolFile(nsACString & spoolPath)
+{
+  bool isFile;
+  nsresult rv;
+
+  nsCOMPtr<nsIFile> spoolFile;
+  rv = NS_NewNativeLocalFile(EmptyCString(), true, getter_AddRefs(spoolFile));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  char * mailEnv = PR_GetEnv("MAIL");
+  char * userEnv = PR_GetEnv("USER");
+  if (!userEnv)
+    userEnv = PR_GetEnv("USERNAME");
+
+  if (mailEnv) {
+    rv = spoolFile->InitWithNativePath(nsDependentCString(mailEnv));
+    NS_ENSURE_SUCCESS(rv, rv);
+    rv = spoolFile->IsFile(&isFile);
+    if (NS_SUCCEEDED(rv) && isFile)
+      spoolPath = mailEnv;
+  }
+  else if (userEnv) {
+    // Try to build the mailbox path from the username and a number
+    // of guessed spool directory paths.
+    nsAutoCString tmpPath;
+    uint32_t i;
+    for (i = 0; i < NUM_DEFAULT_SPOOL_PATHS; i++) {
+      tmpPath = gDefaultSpoolPaths[i];
+      tmpPath += userEnv;
+      rv = spoolFile->InitWithNativePath(tmpPath);
+      NS_ENSURE_SUCCESS(rv, rv);
+      rv = spoolFile->IsFile(&isFile);
+      if (NS_SUCCEEDED(rv) && isFile) {
+        spoolPath = tmpPath;
+        break;
+      }
+    }
+  }
+
+  return rv;
+}
+
+nsresult
+nsMovemailService::GetNewMail(nsIMsgWindow *aMsgWindow,
+                              nsIUrlListener* /* aUrlListener */,
+                              nsIMsgFolder* /* aMsgFolder */,
+                              nsIMovemailIncomingServer *aMovemailServer,
+                              nsIURI ** /* aURL */)
+{
+  LOG(("nsMovemailService::GetNewMail"));
+
+  NS_ENSURE_ARG_POINTER(aMovemailServer);
+  // It is OK if aMsgWindow is null.
+  mMsgWindow = aMsgWindow;
+
+  nsresult rv;
+
+  nsCOMPtr<nsIMsgIncomingServer> in_server =
+      do_QueryInterface(aMovemailServer, &rv);
+  NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && in_server,
+    NS_MSG_INVALID_OR_MISSING_SERVER);
+
+  // Attempt to locate the mail spool file
+  nsAutoCString spoolPath;
+  rv = in_server->GetCharValue("spoolDir", spoolPath);
+  if (NS_FAILED(rv) || spoolPath.IsEmpty())
+    rv = LocateSpoolFile(spoolPath);
+  if (NS_FAILED(rv) || spoolPath.IsEmpty()) {
+    Error("movemailSpoolFileNotFound", nullptr, 0);
+    return NS_ERROR_FAILURE;
+  }
+
+  NS_ConvertUTF8toUTF16 wideSpoolPath(spoolPath);
+  const char16_t* spoolPathString[] = { wideSpoolPath.get() };
+
+  // Create an input stream for the spool file
+  nsCOMPtr<nsIFile> spoolFile;
+  rv = NS_NewNativeLocalFile(spoolPath, true, getter_AddRefs(spoolFile));
+  NS_ENSURE_SUCCESS(rv, rv);
+  nsCOMPtr<nsIInputStream> spoolInputStream;
+  rv = NS_NewLocalFileInputStream(getter_AddRefs(spoolInputStream), spoolFile);
+  if (NS_FAILED(rv)) {
+    Error("movemailCantOpenSpoolFile", spoolPathString, 1);
+    return rv;
+  }
+
+  // Get a line input interface for the spool file
+  nsCOMPtr<nsILineInputStream> lineInputStream =
+    do_QueryInterface(spoolInputStream, &rv);
+  NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && lineInputStream, rv);
+
+  nsCOMPtr<nsIMsgFolder> serverFolder;
+  nsCOMPtr<nsIMsgFolder> inbox;
+
+  rv = in_server->GetRootFolder(getter_AddRefs(serverFolder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = serverFolder->GetFolderWithFlags(nsMsgFolderFlags::Inbox,
+                                        getter_AddRefs(inbox));
+  NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && inbox, rv);
+
+  nsCOMPtr<nsIMsgPluggableStore> msgStore;
+  rv = in_server->GetMsgStore(getter_AddRefs(msgStore));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // create a new mail parser
+  RefPtr<nsParseNewMailState> newMailParser = new nsParseNewMailState;
+
+  // Try and obtain the lock for the spool file.
+  SpoolLock lock(&spoolPath, 5, *this, in_server);
+  if (!lock.isLocked())
+    return NS_ERROR_FAILURE;
+
+  nsCOMPtr<nsIMsgDBHdr> newHdr;
+  nsCOMPtr<nsIOutputStream> outputStream;
+
+  // MIDDLE of the FUN : consume the mailbox data.
+  bool isMore = true;
+  nsAutoCString buffer;
+  uint32_t bytesWritten = 0;
+  while (isMore &&
+         NS_SUCCEEDED(lineInputStream->ReadLine(buffer, &isMore)))
+  {
+    // If first string is empty and we're now at EOF then abort parsing.
+    if (buffer.IsEmpty() && !isMore && !bytesWritten) {
+      LOG(("Empty spool file"));
+      break;
+    }
+
+    buffer.AppendLiteral(MSG_LINEBREAK);
+
+    if (isMore && StringBeginsWith(buffer, NS_LITERAL_CSTRING("From "))) {
+      // Finish previous header and message, if any.
+      if (newHdr) {
+        outputStream->Flush();
+        newMailParser->PublishMsgHeader(nullptr);
+        rv = msgStore->FinishNewMessage(outputStream, newHdr);
+        NS_ENSURE_SUCCESS(rv, rv);
+        newMailParser->Clear();
+      }
+      bool reusable;
+      rv = msgStore->GetNewMsgOutputStream(inbox, getter_AddRefs(newHdr),
+                                           &reusable, getter_AddRefs(outputStream));
+      NS_ENSURE_SUCCESS(rv, rv);
+
+      rv = newMailParser->Init(serverFolder, inbox,
+                               nullptr, newHdr, outputStream);
+      NS_ENSURE_SUCCESS(rv, rv);
+    }
+    if (!outputStream) {
+      // If we do not have outputStream here, something bad happened.
+      // We probably didn't find the proper message start delimiter "From "
+      // and are now reading in the middle of a message. Bail out.
+      Error("movemailCantParseSpool", spoolPathString, 1);
+      return NS_ERROR_UNEXPECTED;
+    }
+
+    newMailParser->HandleLine(buffer.BeginWriting(), buffer.Length());
+    rv = outputStream->Write(buffer.get(), buffer.Length(), &bytesWritten);
+    NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && (bytesWritten == buffer.Length()),
+                   NS_ERROR_FAILURE);
+
+    // "From " lines delimit messages, start a new one here.
+    if (isMore && StringBeginsWith(buffer, NS_LITERAL_CSTRING("From "))) {
+      buffer.AssignLiteral("X-Mozilla-Status: 8000" MSG_LINEBREAK);
+      newMailParser->HandleLine(buffer.BeginWriting(), buffer.Length());
+      rv = outputStream->Write(buffer.get(), buffer.Length(), &bytesWritten);
+      NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && (bytesWritten == buffer.Length()),
+                     NS_ERROR_FAILURE);
+
+      buffer.AssignLiteral("X-Mozilla-Status2: 00000000" MSG_LINEBREAK);
+      newMailParser->HandleLine(buffer.BeginWriting(), buffer.Length());
+      rv = outputStream->Write(buffer.get(), buffer.Length(), &bytesWritten);
+      NS_ENSURE_TRUE(NS_SUCCEEDED(rv) && (bytesWritten == buffer.Length()),
+                     NS_ERROR_FAILURE);
+    }
+  }
+  if (outputStream) {
+    outputStream->Flush();
+    newMailParser->PublishMsgHeader(nullptr);
+    newMailParser->OnStopRequest(nullptr, nullptr, NS_OK);
+    rv = msgStore->FinishNewMessage(outputStream, newHdr);
+    NS_ENSURE_SUCCESS(rv, rv);
+    outputStream->Close();
+  }
+  // Truncate the spool file as we parsed it successfully.
+  rv = spoolFile->SetFileSize(0);
+  if (NS_FAILED(rv)) {
+    Error("movemailCantTruncateSpoolFile", spoolPathString, 1);
+  }
+
+  LOG(("GetNewMail returning rv=%d", rv));
+  return rv;
+}
+
+
+NS_IMETHODIMP
+nsMovemailService::SetDefaultLocalPath(nsIFile *aPath)
+{
+  NS_ENSURE_ARG(aPath);
+  return NS_SetPersistentFile(PREF_MAIL_ROOT_MOVEMAIL_REL, PREF_MAIL_ROOT_MOVEMAIL, aPath);
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetDefaultLocalPath(nsIFile ** aResult)
+{
+  NS_ENSURE_ARG_POINTER(aResult);
+  *aResult = nullptr;
+
+  nsresult rv;
+  bool havePref;
+  nsCOMPtr<nsIFile> localFile;
+  rv = NS_GetPersistentFile(PREF_MAIL_ROOT_MOVEMAIL_REL,
+                            PREF_MAIL_ROOT_MOVEMAIL,
+                            NS_APP_MAIL_50_DIR,
+                            havePref,
+                            getter_AddRefs(localFile));
+  if (NS_FAILED(rv)) return rv;
+
+  bool exists;
+  rv = localFile->Exists(&exists);
+  if (NS_SUCCEEDED(rv) && !exists)
+    rv = localFile->Create(nsIFile::DIRECTORY_TYPE, 0775);
+  if (NS_FAILED(rv)) return rv;
+
+  if (!havePref || !exists) {
+    rv = NS_SetPersistentFile(PREF_MAIL_ROOT_MOVEMAIL_REL, PREF_MAIL_ROOT_MOVEMAIL, localFile);
+    NS_ASSERTION(NS_SUCCEEDED(rv), "Failed to set root dir pref.");
+  }
+
+  NS_IF_ADDREF(*aResult = localFile);
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsMovemailService::GetServerIID(nsIID* *aServerIID)
+{
+  *aServerIID = new nsIID(NS_GET_IID(nsIMovemailIncomingServer));
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetRequiresUsername(bool *aRequiresUsername)
+{
+  NS_ENSURE_ARG_POINTER(aRequiresUsername);
+  *aRequiresUsername = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetPreflightPrettyNameWithEmailAddress(bool *aPreflightPrettyNameWithEmailAddress)
+{
+  NS_ENSURE_ARG_POINTER(aPreflightPrettyNameWithEmailAddress);
+  *aPreflightPrettyNameWithEmailAddress = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetCanLoginAtStartUp(bool *aCanLoginAtStartUp)
+{
+  NS_ENSURE_ARG_POINTER(aCanLoginAtStartUp);
+  *aCanLoginAtStartUp = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetCanDelete(bool *aCanDelete)
+{
+  NS_ENSURE_ARG_POINTER(aCanDelete);
+  *aCanDelete = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetCanGetMessages(bool *aCanGetMessages)
+{
+  NS_ENSURE_ARG_POINTER(aCanGetMessages);
+  *aCanGetMessages = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetCanGetIncomingMessages(bool *aCanGetIncomingMessages)
+{
+  NS_ENSURE_ARG_POINTER(aCanGetIncomingMessages);
+  *aCanGetIncomingMessages = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetCanDuplicate(bool *aCanDuplicate)
+{
+  NS_ENSURE_ARG_POINTER(aCanDuplicate);
+  *aCanDuplicate = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetDefaultDoBiff(bool *aDoBiff)
+{
+  NS_ENSURE_ARG_POINTER(aDoBiff);
+  // by default, do biff for movemail
+  *aDoBiff = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetDefaultServerPort(bool isSecure, int32_t *aDefaultPort)
+{
+  NS_ENSURE_ARG_POINTER(aDefaultPort);
+  *aDefaultPort = -1;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetShowComposeMsgLink(bool *showComposeMsgLink)
+{
+  NS_ENSURE_ARG_POINTER(showComposeMsgLink);
+  *showComposeMsgLink = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsMovemailService::GetFoldersCreatedAsync(bool *aAsyncCreation)
+{
+  NS_ENSURE_ARG_POINTER(aAsyncCreation);
+  *aAsyncCreation = false;
+  return NS_OK;
+}

mailnews/local/src/nsMovemailService.h

@@ -0,0 +1,32 @@
+/* -*- 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/. */
+
+#ifndef nsMovemailService_h___
+#define nsMovemailService_h___
+
+#include "nscore.h"
+#include "nsCOMPtr.h"
+
+#include "nsIMovemailService.h"
+#include "nsIMsgProtocolInfo.h"
+#include "nsIMsgWindow.h"
+
+class nsMovemailService : public nsIMsgProtocolInfo, public nsIMovemailService
+{
+public:
+  nsMovemailService();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIMOVEMAILSERVICE
+  NS_DECL_NSIMSGPROTOCOLINFO
+
+  void Error(const char* errorCode, const char16_t **params, uint32_t length);
+
+private:
+  virtual ~nsMovemailService();
+  nsCOMPtr<nsIMsgWindow> mMsgWindow;
+};
+
+#endif /* nsMovemailService_h___ */

mailnews/local/src/nsMsgBrkMBoxStore.h

@@ -0,0 +1,50 @@
+/* -*- 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/. */
+
+/**
+   Class for handling Berkeley Mailbox stores.
+*/
+
+#ifndef nsMsgBrkMboxStore_h__
+#define nsMsgBrkMboxStore_h__
+
+#include "nsMsgLocalStoreUtils.h"
+#include "nsIFile.h"
+#include "nsInterfaceHashtable.h"
+#include "nsISeekableStream.h"
+
+class nsMsgBrkMBoxStore final : public nsMsgLocalStoreUtils, nsIMsgPluggableStore
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIMSGPLUGGABLESTORE
+
+  nsMsgBrkMBoxStore();
+
+private:
+  ~nsMsgBrkMBoxStore();
+
+protected:
+  nsresult AddSubFolders(nsIMsgFolder *parent, nsCOMPtr<nsIFile> &path, bool deep);
+  nsresult CreateDirectoryForFolder(nsIFile *path);
+  nsresult GetOutputStream(nsIArray *aHdrArray,
+                           nsCOMPtr<nsIOutputStream> &outputStream,
+                           nsCOMPtr<nsISeekableStream> &seekableStream,
+                           int64_t &restorePos);
+  void GetMailboxModProperties(nsIMsgFolder *aFolder,
+                               int64_t *aSize, uint32_t *aDate);
+  void SetDBValid(nsIMsgDBHdr *aHdr);
+  // We don't want to keep re-opening an output stream when downloading
+  // multiple pop3 messages, or adjusting x-mozilla-status headers, so
+  // we cache output streams based on folder uri's. If the caller has closed
+  // the stream, we'll get a new one.
+  nsInterfaceHashtable<nsCStringHashKey, nsIOutputStream> m_outputStreams;
+
+#ifdef _DEBUG
+  nsCOMPtr<nsIMsgFolder> m_streamOutstandingFolder;
+#endif
+};
+
+#endif

mailnews/local/src/nsMsgLocalStoreUtils.cpp

@@ -0,0 +1,345 @@
+/* -*- 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 "msgCore.h"    // precompiled header...
+#include "nsMsgLocalStoreUtils.h"
+#include "nsIFile.h"
+#include "nsIDBFolderInfo.h"
+#include "nsIMsgDatabase.h"
+#include "prprf.h"
+
+#define EXTRA_SAFETY_SPACE 0x400000 // (4MiB)
+
+nsMsgLocalStoreUtils::nsMsgLocalStoreUtils()
+{
+}
+
+nsresult
+nsMsgLocalStoreUtils::AddDirectorySeparator(nsIFile *path)
+{
+  nsAutoString leafName;
+  path->GetLeafName(leafName);
+  leafName.AppendLiteral(FOLDER_SUFFIX);
+  return path->SetLeafName(leafName);
+}
+
+bool
+nsMsgLocalStoreUtils::nsShouldIgnoreFile(nsAString& name)
+{
+  char16_t firstChar = name.First();
+  if (firstChar == '.' || firstChar == '#' ||
+      name.CharAt(name.Length() - 1) == '~')
+    return true;
+
+  if (name.LowerCaseEqualsLiteral("msgfilterrules.dat") ||
+      name.LowerCaseEqualsLiteral("rules.dat") ||
+      name.LowerCaseEqualsLiteral("filterlog.html") ||
+      name.LowerCaseEqualsLiteral("junklog.html") ||
+      name.LowerCaseEqualsLiteral("rulesbackup.dat"))
+    return true;
+
+  // don't add summary files to the list of folders;
+  // don't add popstate files to the list either, or rules (sort.dat).
+  if (StringEndsWith(name, NS_LITERAL_STRING(".snm")) ||
+      name.LowerCaseEqualsLiteral("popstate.dat") ||
+      name.LowerCaseEqualsLiteral("sort.dat") ||
+      name.LowerCaseEqualsLiteral("mailfilt.log") ||
+      name.LowerCaseEqualsLiteral("filters.js") ||
+      StringEndsWith(name, NS_LITERAL_STRING(".toc")))
+    return true;
+
+  // ignore RSS data source files
+  if (name.LowerCaseEqualsLiteral("feeds.rdf") ||
+      name.LowerCaseEqualsLiteral("feeditems.rdf") ||
+      StringBeginsWith(name, NS_LITERAL_STRING("feeditems_error")))
+    return true;
+
+  // The .mozmsgs dir is for spotlight support
+    return (StringEndsWith(name, NS_LITERAL_STRING(".mozmsgs")) ||
+            StringEndsWith(name, NS_LITERAL_STRING(".sbd")) ||
+            StringEndsWith(name, NS_LITERAL_STRING(SUMMARY_SUFFIX)));
+}
+
+/**
+ * We're passed a stream positioned at the start of the message.
+ * We start reading lines, looking for x-mozilla-keys: headers; If we're
+ * adding the keyword and we find a header with the desired keyword already
+ * in it, we don't need to do anything. Likewise, if removing keyword and we
+ * don't find it,we don't need to do anything. Otherwise, if adding, we need
+ * to see if there's an x-mozilla-keys header with room for the new keyword.
+ *  If so, we replace the corresponding number of spaces with the keyword.
+ * If no room, we can't do anything until the folder is compacted and another
+ * x-mozilla-keys header is added. In that case, we set a property
+ * on the header, which the compaction code will check.
+ * This is not true for maildir, however, since it won't require compaction.
+ */
+
+void
+nsMsgLocalStoreUtils::ChangeKeywordsHelper(nsIMsgDBHdr *message,
+                                           uint64_t desiredOffset,
+                                           nsLineBuffer<char> *lineBuffer,
+                                           nsTArray<nsCString> &keywordArray,
+                                           bool aAdd,
+                                           nsIOutputStream *outputStream,
+                                           nsISeekableStream *seekableStream,
+                                           nsIInputStream *inputStream)
+{
+  uint32_t bytesWritten;
+
+  for (uint32_t i = 0; i < keywordArray.Length(); i++)
+  {
+    nsAutoCString header;
+    nsAutoCString keywords;
+    bool done = false;
+    uint32_t len = 0;
+    nsAutoCString keywordToWrite(" ");
+
+    keywordToWrite.Append(keywordArray[i]);
+    seekableStream->Seek(nsISeekableStream::NS_SEEK_SET, desiredOffset);
+    // need to reset lineBuffer, which is cheaper than creating a new one.
+    lineBuffer->start = lineBuffer->end = lineBuffer->buf;
+    bool inKeywordHeader = false;
+    bool foundKeyword = false;
+    int64_t offsetToAddKeyword = 0;
+    bool more;
+    message->GetMessageSize(&len);
+    // loop through
+    while (!done)
+    {
+      int64_t lineStartPos;
+      seekableStream->Tell(&lineStartPos);
+      // we need to adjust the linestart pos by how much extra the line
+      // buffer has read from the stream.
+      lineStartPos -= (lineBuffer->end - lineBuffer->start);
+      // NS_ReadLine doesn't return line termination chars.
+      nsCString keywordHeaders;
+      nsresult rv = NS_ReadLine(inputStream, lineBuffer, keywordHeaders, &more);
+      if (NS_SUCCEEDED(rv))
+      {
+        if (keywordHeaders.IsEmpty())
+          break; // passed headers; no x-mozilla-keywords header; give up.
+        if (StringBeginsWith(keywordHeaders,
+                             NS_LITERAL_CSTRING(HEADER_X_MOZILLA_KEYWORDS)))
+          inKeywordHeader = true;
+        else if (inKeywordHeader && (keywordHeaders.CharAt(0) == ' ' ||
+                                     keywordHeaders.CharAt(0) == '\t'))
+          ; // continuation header line
+        else if (inKeywordHeader)
+          break;
+        else
+          continue;
+        uint32_t keywordHdrLength = keywordHeaders.Length();
+        int32_t startOffset, keywordLength;
+        // check if we have the keyword
+        if (MsgFindKeyword(keywordArray[i], keywordHeaders, &startOffset,
+                           &keywordLength))
+        {
+          foundKeyword = true;
+          if (!aAdd) // if we're removing, remove it, and break;
+          {
+            keywordHeaders.Cut(startOffset, keywordLength);
+            for (int32_t j = keywordLength; j > 0; j--)
+              keywordHeaders.Append(' ');
+            seekableStream->Seek(nsISeekableStream::NS_SEEK_SET, lineStartPos);
+            outputStream->Write(keywordHeaders.get(), keywordHeaders.Length(),
+                                &bytesWritten);
+          }
+          offsetToAddKeyword = 0;
+          // if adding and we already have the keyword, done
+          done = true;
+          break;
+        }
+        // argh, we need to check all the lines to see if we already have the
+        // keyword, but if we don't find it, we want to remember the line and
+        // position where we have room to add the keyword.
+        if (aAdd)
+        {
+          nsAutoCString curKeywordHdr(keywordHeaders);
+          // strip off line ending spaces.
+          curKeywordHdr.Trim(" ", false, true);
+          if (!offsetToAddKeyword && curKeywordHdr.Length() +
+                keywordToWrite.Length() < keywordHdrLength)
+            offsetToAddKeyword = lineStartPos + curKeywordHdr.Length();
+        }
+      }
+    }
+    if (aAdd && !foundKeyword)
+    {
+      if (!offsetToAddKeyword)
+        message->SetUint32Property("growKeywords", 1);
+      else
+      {
+        seekableStream->Seek(nsISeekableStream::NS_SEEK_SET,
+                             offsetToAddKeyword);
+        outputStream->Write(keywordToWrite.get(), keywordToWrite.Length(),
+                            &bytesWritten);
+      }
+    }
+  }
+}
+
+nsresult
+nsMsgLocalStoreUtils::UpdateFolderFlag(nsIMsgDBHdr *mailHdr, bool bSet,
+                                       nsMsgMessageFlagType flag,
+                                       nsIOutputStream *fileStream)
+{
+  uint32_t statusOffset;
+  uint64_t msgOffset;
+  nsresult rv = mailHdr->GetStatusOffset(&statusOffset);
+  // This probably means there's no x-mozilla-status header, so
+  // we just ignore this.
+  if (NS_FAILED(rv) || (statusOffset == 0))
+    return NS_OK;
+  rv = mailHdr->GetMessageOffset(&msgOffset);
+  NS_ENSURE_SUCCESS(rv, rv);
+  uint64_t statusPos = msgOffset + statusOffset;
+  nsCOMPtr<nsISeekableStream> seekableStream(do_QueryInterface(fileStream, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+  rv = seekableStream->Seek(nsISeekableStream::NS_SEEK_SET, statusPos);
+  NS_ENSURE_SUCCESS(rv, rv);
+  char buf[50];
+  buf[0] = '\0';
+  nsCOMPtr<nsIInputStream> inputStream = do_QueryInterface(fileStream, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  uint32_t bytesRead;
+  if (NS_SUCCEEDED(inputStream->Read(buf, X_MOZILLA_STATUS_LEN + 6,
+                                     &bytesRead)))
+  {
+    buf[bytesRead] = '\0';
+    if (strncmp(buf, X_MOZILLA_STATUS, X_MOZILLA_STATUS_LEN) == 0 &&
+      strncmp(buf + X_MOZILLA_STATUS_LEN, ": ", 2) == 0 &&
+      strlen(buf) >= X_MOZILLA_STATUS_LEN + 6)
+    {
+      uint32_t flags;
+      uint32_t bytesWritten;
+      (void)mailHdr->GetFlags(&flags);
+      if (!(flags & nsMsgMessageFlags::Expunged))
+      {
+        char *p = buf + X_MOZILLA_STATUS_LEN + 2;
+
+        nsresult errorCode = NS_OK;
+        flags = nsDependentCString(p).ToInteger(&errorCode, 16);
+
+        uint32_t curFlags;
+        (void)mailHdr->GetFlags(&curFlags);
+        flags = (flags & nsMsgMessageFlags::Queued) |
+          (curFlags & ~nsMsgMessageFlags::RuntimeOnly);
+        if (bSet)
+          flags |= flag;
+        else
+          flags &= ~flag;
+      }
+      else
+      {
+        flags &= ~nsMsgMessageFlags::RuntimeOnly;
+      }
+      seekableStream->Seek(nsISeekableStream::NS_SEEK_SET, statusPos);
+      // We are filing out x-mozilla-status flags here
+      PR_snprintf(buf, sizeof(buf), X_MOZILLA_STATUS_FORMAT,
+        flags & 0x0000FFFF);
+      int32_t lineLen = PL_strlen(buf);
+      uint64_t status2Pos = statusPos + lineLen;
+      fileStream->Write(buf, lineLen, &bytesWritten);
+
+      if (flag & 0xFFFF0000)
+      {
+        // Time to update x-mozilla-status2,
+        // first find it by finding end of previous line, see bug 234935.
+        seekableStream->Seek(nsISeekableStream::NS_SEEK_SET, status2Pos);
+        do
+        {
+          rv = inputStream->Read(buf, 1, &bytesRead);
+          status2Pos++;
+        } while (NS_SUCCEEDED(rv) && (*buf == '\n' || *buf == '\r'));
+        status2Pos--;
+        seekableStream->Seek(nsISeekableStream::NS_SEEK_SET, status2Pos);
+        if (NS_SUCCEEDED(inputStream->Read(buf, X_MOZILLA_STATUS2_LEN + 10,
+                                           &bytesRead)))
+        {
+          if (strncmp(buf, X_MOZILLA_STATUS2, X_MOZILLA_STATUS2_LEN) == 0 &&
+            strncmp(buf + X_MOZILLA_STATUS2_LEN, ": ", 2) == 0 &&
+            strlen(buf) >= X_MOZILLA_STATUS2_LEN + 10)
+          {
+            uint32_t dbFlags;
+            (void)mailHdr->GetFlags(&dbFlags);
+            dbFlags &= 0xFFFF0000;
+            seekableStream->Seek(nsISeekableStream::NS_SEEK_SET, status2Pos);
+            PR_snprintf(buf, sizeof(buf), X_MOZILLA_STATUS2_FORMAT, dbFlags);
+            fileStream->Write(buf, PL_strlen(buf), &bytesWritten);
+          }
+        }
+      }
+    }
+    else
+    {
+#ifdef DEBUG
+      printf("Didn't find %s where expected at position %ld\n"
+        "instead, found %s.\n",
+        X_MOZILLA_STATUS, (long) statusPos, buf);
+#endif
+      rv = NS_ERROR_FAILURE;
+    }
+  }
+  else
+    rv = NS_ERROR_FAILURE;
+  return rv;
+}
+
+/**
+ * Returns true if there is enough space on disk.
+ *
+ * @param aFile  Any file in the message store that is on a logical
+ *               disk volume so that it can be queried for disk space.
+ * @param aSpaceRequested  The size of free space there must be on the disk
+ *                         to return true.
+ */
+bool
+nsMsgLocalStoreUtils::DiskSpaceAvailableInStore(nsIFile *aFile, uint64_t aSpaceRequested)
+{
+  int64_t diskFree;
+  nsresult rv = aFile->GetDiskSpaceAvailable(&diskFree);
+  if (NS_SUCCEEDED(rv)) {
+#ifdef DEBUG
+    printf("GetDiskSpaceAvailable returned: %lld bytes\n", (long long)diskFree);
+#endif
+    // When checking for disk space available, take into consideration
+    // possible database changes, therefore ask for a little more
+    // (EXTRA_SAFETY_SPACE) than what the requested size is. Also, due to disk
+    // sector sizes, allocation blocks, etc. The space "available" may be greater
+    // than the actual space usable.
+    return ((aSpaceRequested + EXTRA_SAFETY_SPACE) < (uint64_t) diskFree);
+  } else if (rv == NS_ERROR_NOT_IMPLEMENTED) {
+    // The call to GetDiskSpaceAvailable is not implemented!
+    // This will happen on certain platforms where GetDiskSpaceAvailable
+    // is not implemented. Since people on those platforms still need
+    // to download mail, we will simply bypass the disk-space check.
+    //
+    // We'll leave a debug message to warn people.
+#ifdef DEBUG
+    printf("Call to GetDiskSpaceAvailable FAILED because it is not implemented!\n");
+#endif
+    return true;
+  } else {
+    printf("Call to GetDiskSpaceAvailable FAILED!\n");
+    return false;
+  }
+}
+
+/**
+ * Resets forceReparse in the database.
+ *
+ * @param aMsgDb The database to reset.
+ */
+void
+nsMsgLocalStoreUtils::ResetForceReparse(nsIMsgDatabase *aMsgDB)
+{
+  if (aMsgDB)
+  {
+    nsCOMPtr<nsIDBFolderInfo> folderInfo;
+    aMsgDB->GetDBFolderInfo(getter_AddRefs(folderInfo));
+    if (folderInfo)
+      folderInfo->SetBooleanProperty("forceReparse", false);
+  }
+}

mailnews/local/src/nsMsgLocalStoreUtils.h

@@ -0,0 +1,49 @@
+/* -*- 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/. */
+#ifndef nsMsgLocalStoreUtils_h__
+#define nsMsgLocalStoreUtils_h__
+
+#include "msgCore.h"
+#include "nsIMsgPluggableStore.h"
+#include "nsStringGlue.h"
+#include "nsReadLine.h"
+#include "nsISeekableStream.h"
+#include "nsIMsgHdr.h"
+#include "nsMsgLocalFolderHdrs.h"
+#include "nsMailHeaders.h"
+#include "nsMsgUtils.h"
+#include "nsIOutputStream.h"
+#include "nsMsgMessageFlags.h"
+
+/**
+ * Utility Class for handling local mail stores. Berkeley Mailbox
+ * and MailDir stores inherit from this class to share some code.
+*/
+
+class nsMsgLocalStoreUtils
+{
+public:
+  nsMsgLocalStoreUtils();
+
+  static nsresult AddDirectorySeparator(nsIFile *path);
+  static bool nsShouldIgnoreFile(nsAString& name);
+  static void ChangeKeywordsHelper(nsIMsgDBHdr *message,
+                            uint64_t desiredOffset,
+                            nsLineBuffer<char> *lineBuffer,
+                            nsTArray<nsCString> &keywordArray,
+                            bool aAdd,
+                            nsIOutputStream *outputStream,
+                            nsISeekableStream *seekableStream,
+                            nsIInputStream *inputStream);
+  static void ResetForceReparse(nsIMsgDatabase *aMsgDB);
+
+  nsresult UpdateFolderFlag(nsIMsgDBHdr *mailHdr, bool bSet,
+                            nsMsgMessageFlagType flag,
+                            nsIOutputStream *fileStream);
+  bool DiskSpaceAvailableInStore(nsIFile *aFile,
+                                 uint64_t aSpaceRequested);
+};
+
+#endif

mailnews/local/src/nsMsgMaildirStore.h

@@ -0,0 +1,38 @@
+/* -*- 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/. */
+
+/**
+   Class for handling Maildir stores.
+*/
+
+#ifndef nsMsgMaildirStore_h__
+#define nsMsgMaildirStore_h__
+
+#include "nsMsgLocalStoreUtils.h"
+#include "nsIFile.h"
+#include "nsMsgMessageFlags.h"
+
+class nsMsgMaildirStore final : public nsMsgLocalStoreUtils, nsIMsgPluggableStore
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIMSGPLUGGABLESTORE
+
+  nsMsgMaildirStore();
+
+private:
+  ~nsMsgMaildirStore();
+
+protected:
+  nsresult GetDirectoryForFolder(nsIFile *path);
+  nsresult CreateDirectoryForFolder(nsIFile *path, bool aIsServer);
+
+  nsresult CreateMaildir(nsIFile *path);
+  nsresult AddSubFolders(nsIMsgFolder *parent, nsIFile *path, bool deep);
+  nsresult GetOutputStream(nsIMsgDBHdr *aHdr,
+                           nsCOMPtr<nsIOutputStream> &aOutputStream);
+
+};
+#endif

mailnews/local/src/nsNoIncomingServer.cpp

@@ -0,0 +1,206 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h" // pre-compiled headers
+
+#include "prmem.h"
+#include "plstr.h"
+#include "prprf.h"
+#include "nsNoIncomingServer.h"
+#include "nsMsgLocalCID.h"
+#include "nsMsgFolderFlags.h"
+#include "nsIMsgLocalMailFolder.h"
+#include "nsIMsgMailSession.h"
+#include "nsMsgBaseCID.h"
+#include "nsIMsgAccountManager.h"
+#include "nsIPop3IncomingServer.h"
+#include "nsServiceManagerUtils.h"
+#include "nsMsgUtils.h"
+
+NS_IMPL_ISUPPORTS_INHERITED(nsNoIncomingServer,
+                            nsMsgIncomingServer,
+                            nsINoIncomingServer,
+                            nsILocalMailIncomingServer)
+
+nsNoIncomingServer::nsNoIncomingServer()
+{
+}
+
+nsNoIncomingServer::~nsNoIncomingServer()
+{
+}
+
+NS_IMETHODIMP
+nsNoIncomingServer::GetLocalStoreType(nsACString& type)
+{
+  type.AssignLiteral("mailbox");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoIncomingServer::GetLocalDatabaseType(nsACString& type)
+{
+  type.AssignLiteral("mailbox");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoIncomingServer::GetAccountManagerChrome(nsAString& aResult)
+{
+  aResult.AssignLiteral("am-serverwithnoidentities.xul");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoIncomingServer::SetFlagsOnDefaultMailboxes()
+{
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  nsresult rv = GetRootFolder(getter_AddRefs(rootFolder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMsgLocalMailFolder> localFolder =
+      do_QueryInterface(rootFolder, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // None server may have an inbox if it's deferred to,
+  // or if it's the smart mailboxes account.
+  localFolder->SetFlagsOnDefaultMailboxes(nsMsgFolderFlags::SpecialUse);
+
+  return NS_OK;
+}
+
+// TODO: make this work with maildir message store, bug 890742.
+NS_IMETHODIMP nsNoIncomingServer::CopyDefaultMessages(const char *folderNameOnDisk)
+{
+  NS_ENSURE_ARG(folderNameOnDisk);
+
+  nsresult rv;
+  nsCOMPtr<nsIMsgMailSession> mailSession = do_GetService(NS_MSGMAILSESSION_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Get defaults directory for messenger files. MailSession service appends 'messenger' to the
+  // the app defaults folder and returns it. Locale will be added to the path, if there is one.
+  nsCOMPtr<nsIFile> defaultMessagesFile;
+  rv = mailSession->GetDataFilesDir("messenger", getter_AddRefs(defaultMessagesFile));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // check if bin/defaults/messenger/<folderNameOnDisk>
+  // (or bin/defaults/messenger/<locale>/<folderNameOnDisk> if we had a locale provide) exists.
+  // it doesn't have to exist.  if it doesn't, return
+  rv = defaultMessagesFile->AppendNative(nsDependentCString(folderNameOnDisk));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  bool exists;
+  rv = defaultMessagesFile->Exists(&exists);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (!exists)
+    return NS_OK;
+
+  nsCOMPtr<nsIFile> parentDir;
+  rv = GetLocalPath(getter_AddRefs(parentDir));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // check if parentDir/<folderNameOnDisk> exists
+  {
+    nsCOMPtr<nsIFile> testDir;
+    rv = parentDir->Clone(getter_AddRefs(testDir));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = testDir->AppendNative(nsDependentCString(folderNameOnDisk));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = testDir->Exists(&exists);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  // if it exists add to the end, else copy
+  if (exists)
+  {
+#ifdef DEBUG
+    printf("append default %s (unimplemented)\n", folderNameOnDisk);
+#endif
+    // todo for bug #1181 (the bug ID seems wrong...)
+    // open folderFile, seek to end
+    // read defaultMessagesFile, write to folderFile
+  }
+  else {
+#ifdef DEBUG
+    printf("copy default %s\n",folderNameOnDisk);
+#endif
+    rv = defaultMessagesFile->CopyTo(parentDir, EmptyString());
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP nsNoIncomingServer::CreateDefaultMailboxes()
+{
+  nsresult rv;
+  bool isHidden = false;
+  GetHidden(&isHidden);
+  if (isHidden)
+    return NS_OK;
+
+  // notice, no Inbox, unless we're deferred to...
+  bool isDeferredTo;
+  if (NS_SUCCEEDED(GetIsDeferredTo(&isDeferredTo)) && isDeferredTo)
+  {
+    rv = CreateLocalFolder(NS_LITERAL_STRING("Inbox"));
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  rv = CreateLocalFolder(NS_LITERAL_STRING("Trash"));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // copy the default templates into the Templates folder
+  rv = CopyDefaultMessages("Templates");
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return CreateLocalFolder(NS_LITERAL_STRING("Unsent Messages"));
+}
+
+NS_IMETHODIMP
+nsNoIncomingServer::GetNewMail(nsIMsgWindow *aMsgWindow, nsIUrlListener *aUrlListener, nsIMsgFolder *aInbox, nsIURI **aResult)
+{
+  nsCOMArray<nsIPop3IncomingServer> deferredServers;
+  nsresult rv = GetDeferredServers(this, deferredServers);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (!deferredServers.IsEmpty())
+  {
+    rv = deferredServers[0]->DownloadMailFromServers(deferredServers.Elements(),
+       deferredServers.Length(), aMsgWindow, aInbox, aUrlListener);
+  }
+  // listener might be counting on us to send a notification.
+  else if (aUrlListener)
+    aUrlListener->OnStopRunningUrl(nullptr, NS_OK);
+  return rv;
+}
+
+
+NS_IMETHODIMP
+nsNoIncomingServer::GetCanSearchMessages(bool *canSearchMessages)
+{
+  NS_ENSURE_ARG_POINTER(canSearchMessages);
+  *canSearchMessages = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoIncomingServer::GetServerRequiresPasswordForBiff(bool *aServerRequiresPasswordForBiff)
+{
+  NS_ENSURE_ARG_POINTER(aServerRequiresPasswordForBiff);
+  *aServerRequiresPasswordForBiff = false;  // for local folders, we don't require a password
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoIncomingServer::GetSortOrder(int32_t* aSortOrder)
+{
+  NS_ENSURE_ARG_POINTER(aSortOrder);
+  *aSortOrder = 200000000;
+  return NS_OK;
+}
+

mailnews/local/src/nsNoIncomingServer.h

@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef __nsNoIncomingServer_h
+#define __nsNoIncomingServer_h
+
+#include "mozilla/Attributes.h"
+#include "msgCore.h"
+#include "nsINoIncomingServer.h"
+#include "nsILocalMailIncomingServer.h"
+#include "nsMsgIncomingServer.h"
+#include "nsMailboxServer.h"
+
+/* get some implementation from nsMsgIncomingServer */
+class nsNoIncomingServer : public nsMailboxServer,
+                           public nsINoIncomingServer,
+                           public nsILocalMailIncomingServer
+
+{
+public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSINOINCOMINGSERVER
+  NS_DECL_NSILOCALMAILINCOMINGSERVER
+
+  nsNoIncomingServer();
+
+  NS_IMETHOD GetLocalStoreType(nsACString& type) override;
+  NS_IMETHOD GetLocalDatabaseType(nsACString& type) override;
+  NS_IMETHOD GetCanSearchMessages(bool *canSearchMessages) override;
+  NS_IMETHOD GetServerRequiresPasswordForBiff(bool *aServerRequiresPasswordForBiff) override;
+  NS_IMETHOD GetAccountManagerChrome(nsAString& aResult) override;
+  NS_IMETHOD GetSortOrder(int32_t* aSortOrder) override;
+
+private:
+  virtual ~nsNoIncomingServer();
+};
+
+
+#endif

mailnews/local/src/nsNoneService.cpp

@@ -0,0 +1,168 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h"    // precompiled header...
+
+#include "nsNoneService.h"
+#include "nsINoIncomingServer.h"
+#include "nsINoneService.h"
+#include "nsIMsgProtocolInfo.h"
+
+#include "nsMsgLocalCID.h"
+#include "nsMsgBaseCID.h"
+#include "nsIFile.h"
+#include "nsCOMPtr.h"
+#include "nsMsgUtils.h"
+
+#include "nsIDirectoryService.h"
+#include "nsMailDirServiceDefs.h"
+
+#define PREF_MAIL_ROOT_NONE "mail.root.none"        // old - for backward compatibility only
+#define PREF_MAIL_ROOT_NONE_REL "mail.root.none-rel"
+
+nsNoneService::nsNoneService()
+{
+}
+
+nsNoneService::~nsNoneService()
+{}
+
+NS_IMPL_ISUPPORTS(nsNoneService, nsINoneService, nsIMsgProtocolInfo)
+
+NS_IMETHODIMP
+nsNoneService::SetDefaultLocalPath(nsIFile *aPath)
+{
+    NS_ENSURE_ARG(aPath);
+    return NS_SetPersistentFile(PREF_MAIL_ROOT_NONE_REL, PREF_MAIL_ROOT_NONE, aPath);
+}     
+
+NS_IMETHODIMP
+nsNoneService::GetDefaultLocalPath(nsIFile ** aResult)
+{
+    NS_ENSURE_ARG_POINTER(aResult);
+    *aResult = nullptr;
+    
+    bool havePref;
+    nsCOMPtr<nsIFile> localFile;    
+    nsresult rv = NS_GetPersistentFile(PREF_MAIL_ROOT_NONE_REL,
+                              PREF_MAIL_ROOT_NONE,
+                              NS_APP_MAIL_50_DIR,
+                              havePref,
+                              getter_AddRefs(localFile));
+    if (NS_FAILED(rv)) return rv;
+    
+    bool exists;
+    rv = localFile->Exists(&exists);
+    if (NS_SUCCEEDED(rv) && !exists)
+        rv = localFile->Create(nsIFile::DIRECTORY_TYPE, 0775);
+    if (NS_FAILED(rv)) return rv;
+    
+    if (!havePref || !exists) 
+    {
+        rv = NS_SetPersistentFile(PREF_MAIL_ROOT_NONE_REL, PREF_MAIL_ROOT_NONE, localFile);
+        NS_ASSERTION(NS_SUCCEEDED(rv), "Failed to set root dir pref.");
+    }
+        
+    NS_IF_ADDREF(*aResult = localFile);
+    return NS_OK;
+
+}
+    
+
+NS_IMETHODIMP
+nsNoneService::GetServerIID(nsIID* *aServerIID)
+{
+    *aServerIID = new nsIID(NS_GET_IID(nsINoIncomingServer));
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoneService::GetRequiresUsername(bool *aRequiresUsername)
+{
+  NS_ENSURE_ARG_POINTER(aRequiresUsername);
+  *aRequiresUsername = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoneService::GetPreflightPrettyNameWithEmailAddress(bool *aPreflightPrettyNameWithEmailAddress)
+{
+  NS_ENSURE_ARG_POINTER(aPreflightPrettyNameWithEmailAddress);
+  *aPreflightPrettyNameWithEmailAddress = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoneService::GetCanLoginAtStartUp(bool *aCanLoginAtStartUp)
+{
+  NS_ENSURE_ARG_POINTER(aCanLoginAtStartUp);
+  *aCanLoginAtStartUp = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoneService::GetCanDelete(bool *aCanDelete)
+{
+  NS_ENSURE_ARG_POINTER(aCanDelete);
+  *aCanDelete = false;
+  return NS_OK;
+}  
+
+NS_IMETHODIMP
+nsNoneService::GetCanDuplicate(bool *aCanDuplicate)
+{
+  NS_ENSURE_ARG_POINTER(aCanDuplicate);
+  *aCanDuplicate = false;
+  return NS_OK;
+}  
+
+NS_IMETHODIMP
+nsNoneService::GetCanGetMessages(bool *aCanGetMessages)
+{
+    NS_ENSURE_ARG_POINTER(aCanGetMessages);
+    *aCanGetMessages = false;
+    return NS_OK;
+}  
+
+NS_IMETHODIMP
+nsNoneService::GetCanGetIncomingMessages(bool *aCanGetIncomingMessages)
+{
+    NS_ENSURE_ARG_POINTER(aCanGetIncomingMessages);
+    *aCanGetIncomingMessages = false;
+    return NS_OK;
+} 
+
+NS_IMETHODIMP 
+nsNoneService::GetDefaultDoBiff(bool *aDoBiff)
+{
+    NS_ENSURE_ARG_POINTER(aDoBiff);
+    // by default, don't do biff for "none" servers
+    *aDoBiff = false;    
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoneService::GetDefaultServerPort(bool isSecure, int32_t *aDefaultPort)
+{
+    NS_ENSURE_ARG_POINTER(aDefaultPort);
+    *aDefaultPort = -1;
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsNoneService::GetShowComposeMsgLink(bool *showComposeMsgLink)
+{
+    NS_ENSURE_ARG_POINTER(showComposeMsgLink);
+    *showComposeMsgLink = false;    
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNoneService::GetFoldersCreatedAsync(bool *aAsyncCreation)
+{
+  NS_ENSURE_ARG_POINTER(aAsyncCreation);
+  *aAsyncCreation = false;
+  return NS_OK;
+}

mailnews/local/src/nsNoneService.h

@@ -0,0 +1,28 @@
+/* -*- 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/. */
+
+#ifndef nsNoneService_h___
+#define nsNoneService_h___
+
+#include "nscore.h"
+
+#include "nsIMsgProtocolInfo.h"
+#include "nsINoneService.h"
+
+class nsNoneService : public nsIMsgProtocolInfo, public nsINoneService
+{
+public:
+
+  nsNoneService();
+
+  NS_DECL_ISUPPORTS
+    NS_DECL_NSIMSGPROTOCOLINFO
+  NS_DECL_NSINONESERVICE
+
+private:
+  virtual ~nsNoneService();
+};
+
+#endif /* nsNoneService_h___ */

mailnews/local/src/nsParseMailbox.h

@@ -0,0 +1,271 @@
+/* -*- 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/. */
+
+#ifndef nsParseMailbox_H
+#define nsParseMailbox_H
+
+#include "mozilla/Attributes.h"
+#include "nsIURI.h"
+#include "nsIMsgParseMailMsgState.h"
+#include "nsIStreamListener.h"
+#include "nsMsgLineBuffer.h"
+#include "nsIMsgDatabase.h"
+#include "nsIMsgHdr.h"
+#include "nsIMsgStatusFeedback.h"
+#include "nsCOMPtr.h"
+#include "nsCOMArray.h"
+#include "nsIDBChangeListener.h"
+#include "nsIWeakReference.h"
+#include "nsIWeakReferenceUtils.h"
+#include "nsIMsgWindow.h"
+#include "nsImapMoveCoalescer.h"
+#include "nsAutoPtr.h"
+#include "nsStringGlue.h"
+#include "nsIMsgFilterList.h"
+#include "nsIMsgFilter.h"
+#include "nsIMsgFilterHitNotify.h"
+#include "nsIMsgFolderNotificationService.h"
+#include "nsTArray.h"
+
+class nsByteArray;
+class nsOutputFileStream;
+class nsIOFileStream;
+class nsInputFileStream;
+class nsIMsgFilter;
+class MSG_FolderInfoMail;
+class nsIMsgFilterList;
+class nsIMsgFolder;
+
+/* Used for the various things that parse RFC822 headers...
+ */
+typedef struct message_header
+{
+  const char *value; /* The contents of a header (after ": ") */
+  int32_t length;      /* The length of the data (it is not NULL-terminated.) */
+} message_header;
+
+// This object maintains the parse state for a single mail message.
+class nsParseMailMessageState : public nsIMsgParseMailMsgState, public nsIDBChangeListener
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIMSGPARSEMAILMSGSTATE
+  NS_DECL_NSIDBCHANGELISTENER
+
+  nsParseMailMessageState();
+
+  void                  Init(uint64_t fileposition);
+  virtual nsresult      ParseFolderLine(const char *line, uint32_t lineLength);
+  virtual nsresult      StartNewEnvelope(const char *line, uint32_t lineLength);
+  nsresult              ParseHeaders();
+  nsresult              FinalizeHeaders();
+  nsresult              ParseEnvelope (const char *line, uint32_t line_size);
+  nsresult              InternSubject (struct message_header *header);
+
+  static bool    IsEnvelopeLine(const char *buf, int32_t buf_size);
+
+  nsCOMPtr<nsIMsgDBHdr> m_newMsgHdr; /* current message header we're building */
+  nsCOMPtr<nsIMsgDatabase>  m_mailDB;
+  nsCOMPtr<nsIMsgDatabase> m_backupMailDB;
+
+  nsMailboxParseState   m_state;
+  int64_t              m_position;
+  uint64_t              m_envelope_pos;
+  uint64_t              m_headerstartpos;
+  nsMsgKey              m_new_key;    // DB key for the new header.
+
+  nsByteArray           m_headers;
+
+  nsByteArray           m_envelope;
+
+  struct message_header m_message_id;
+  struct message_header m_references;
+  struct message_header m_date;
+  struct message_header m_delivery_date;
+  struct message_header m_from;
+  struct message_header m_sender;
+  struct message_header m_newsgroups;
+  struct message_header m_subject;
+  struct message_header m_status;
+  struct message_header m_mozstatus;
+  struct message_header m_mozstatus2;
+  struct message_header m_in_reply_to;
+  struct message_header m_replyTo;
+  struct message_header m_content_type;
+  struct message_header m_bccList;
+
+  // Support for having multiple To or Cc header lines in a message
+  nsTArray<struct message_header*> m_toList;
+  nsTArray<struct message_header*> m_ccList;
+  struct message_header *GetNextHeaderInAggregate (nsTArray<struct message_header*> &list);
+  void GetAggregateHeader (nsTArray<struct message_header*> &list, struct message_header *);
+  void ClearAggregateHeader (nsTArray<struct message_header*> &list);
+
+  struct message_header m_envelope_from;
+  struct message_header m_envelope_date;
+  struct message_header m_priority;
+  struct message_header m_account_key;
+  struct message_header m_keywords;
+  // Mdn support
+  struct message_header m_mdn_original_recipient;
+  struct message_header m_return_path;
+  struct message_header m_mdn_dnt; /* MDN Disposition-Notification-To: header */
+
+  PRTime m_receivedTime;
+  uint16_t              m_body_lines;
+
+  bool                  m_IgnoreXMozillaStatus;
+
+  // this enables extensions to add the values of particular headers to
+  // the .msf file as properties of nsIMsgHdr. It is initialized from a
+  // pref, mailnews.customDBHeaders
+  nsTArray<nsCString>   m_customDBHeaders;
+  struct message_header *m_customDBHeaderValues;
+  nsCString m_receivedValue; // accumulated received header
+protected:
+  virtual ~nsParseMailMessageState();
+};
+
+// This class is part of the mailbox parsing state machine
+class nsMsgMailboxParser : public nsIStreamListener, public nsParseMailMessageState, public nsMsgLineBuffer
+{
+public:
+  nsMsgMailboxParser(nsIMsgFolder *);
+  nsMsgMailboxParser();
+  nsresult Init();
+
+  bool    IsRunningUrl() { return m_urlInProgress;} // returns true if we are currently running a url and false otherwise...
+  NS_DECL_ISUPPORTS_INHERITED
+
+  ////////////////////////////////////////////////////////////////////////////////////////
+  // we suppport the nsIStreamListener interface
+  ////////////////////////////////////////////////////////////////////////////////////////
+  NS_DECL_NSIREQUESTOBSERVER
+  NS_DECL_NSISTREAMLISTENER
+
+  void    SetDB (nsIMsgDatabase *mailDB) {m_mailDB = mailDB; }
+
+  // message socket libnet callbacks, which come through folder pane
+  nsresult ProcessMailboxInputStream(nsIURI* aURL, nsIInputStream *aIStream, uint32_t aLength);
+
+  virtual void  DoneParsingFolder(nsresult status);
+  virtual void  AbortNewHeader();
+
+  // for nsMsgLineBuffer
+  virtual nsresult HandleLine(const char *line, uint32_t line_length) override;
+
+  void  UpdateDBFolderInfo();
+  void  UpdateDBFolderInfo(nsIMsgDatabase *mailDB);
+  void  UpdateStatusText(const char* stringName);
+
+  // Update the progress bar based on what we know.
+  virtual void    UpdateProgressPercent ();
+  virtual void OnNewMessage(nsIMsgWindow *msgWindow);
+
+protected:
+  virtual ~nsMsgMailboxParser();
+  nsCOMPtr<nsIMsgStatusFeedback> m_statusFeedback;
+
+  virtual int32_t     PublishMsgHeader(nsIMsgWindow *msgWindow);
+  void                FreeBuffers();
+
+  // data
+  nsString        m_folderName;
+  nsCString       m_inboxUri;
+  nsByteArray     m_inputStream;
+  int32_t         m_obuffer_size;
+  char            *m_obuffer;
+  uint64_t        m_graph_progress_total;
+  uint64_t        m_graph_progress_received;
+  bool            m_parsingDone;
+  PRTime          m_startTime;
+private:
+  // the following flag is used to determine when a url is currently being run. It is cleared on calls
+  // to ::StopBinding and it is set whenever we call Load on a url
+  bool      m_urlInProgress;
+  nsWeakPtr m_folder;
+  void ReleaseFolderLock();
+  nsresult AcquireFolderLock();
+
+};
+
+class nsParseNewMailState : public nsMsgMailboxParser
+, public nsIMsgFilterHitNotify
+{
+public:
+  nsParseNewMailState();
+  NS_DECL_ISUPPORTS_INHERITED
+
+  NS_IMETHOD FinishHeader() override;
+
+  nsresult Init(nsIMsgFolder *rootFolder, nsIMsgFolder *downloadFolder,
+                nsIMsgWindow *aMsgWindow, nsIMsgDBHdr *aHdr,
+                nsIOutputStream *aOutputStream);
+
+  virtual void  DoneParsingFolder(nsresult status) override;
+
+  void DisableFilters() {m_disableFilters = true;}
+
+  NS_DECL_NSIMSGFILTERHITNOTIFY
+
+  nsOutputFileStream *GetLogFile();
+  virtual int32_t PublishMsgHeader(nsIMsgWindow *msgWindow) override;
+  void            GetMsgWindow(nsIMsgWindow **aMsgWindow);
+  nsresult EndMsgDownload();
+
+  nsresult AppendMsgFromStream(nsIInputStream *fileStream, nsIMsgDBHdr *aHdr,
+                               uint32_t length, nsIMsgFolder *destFolder);
+
+  virtual void ApplyFilters(bool *pMoved, nsIMsgWindow *msgWindow,
+                            uint64_t msgOffset);
+  nsresult    ApplyForwardAndReplyFilter(nsIMsgWindow *msgWindow);
+  virtual void OnNewMessage(nsIMsgWindow *msgWindow) override;
+
+  // this keeps track of how many messages we downloaded that
+  // aren't new - e.g., marked read, or moved to an other server.
+  int32_t     m_numNotNewMessages;
+protected:
+  virtual ~nsParseNewMailState();
+  virtual nsresult GetTrashFolder(nsIMsgFolder **pTrashFolder);
+  virtual nsresult MoveIncorporatedMessage(nsIMsgDBHdr *mailHdr,
+                                          nsIMsgDatabase *sourceDB,
+                                          nsIMsgFolder *destIFolder,
+                                          nsIMsgFilter *filter,
+                                          nsIMsgWindow *msgWindow);
+  virtual void     MarkFilteredMessageRead(nsIMsgDBHdr *msgHdr);
+  virtual void     MarkFilteredMessageUnread(nsIMsgDBHdr *msgHdr);
+
+  nsCOMPtr <nsIMsgFilterList> m_filterList;
+  nsCOMPtr <nsIMsgFilterList> m_deferredToServerFilterList;
+  nsCOMPtr <nsIMsgFolder> m_rootFolder;
+  nsCOMPtr <nsIMsgWindow> m_msgWindow;
+  nsCOMPtr <nsIMsgFolder> m_downloadFolder;
+  nsCOMPtr<nsIOutputStream> m_outputStream;
+  nsCOMArray <nsIMsgFolder> m_filterTargetFolders;
+
+  RefPtr<nsImapMoveCoalescer> m_moveCoalescer;
+
+  bool          m_msgMovedByFilter;
+  bool          m_msgCopiedByFilter;
+  bool          m_disableFilters;
+  uint32_t      m_ibuffer_fp;
+  char          *m_ibuffer;
+  uint32_t      m_ibuffer_size;
+  // used for applying move filters, because in the case of using a temporary
+  // download file, the offset/key in the msg hdr is not right.
+  uint64_t      m_curHdrOffset;
+
+  // we have to apply the reply/forward filters in a second pass, after
+  // msg quarantining and moving to other local folders, so we remember the
+  // info we'll need to apply them with these vars.
+  // these need to be arrays in case we have multiple reply/forward filters.
+  nsTArray<nsCString> m_forwardTo;
+  nsTArray<nsCString> m_replyTemplateUri;
+  nsCOMPtr<nsIMsgDBHdr> m_msgToForwardOrReply;
+  nsCOMPtr<nsIMsgFilter> m_filter;
+  nsCOMPtr<nsIMsgRuleAction> m_ruleAction;
+};
+
+#endif

mailnews/local/src/nsPop3IncomingServer.cpp

@@ -0,0 +1,744 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "prmem.h"
+#include "plstr.h"
+#include "prprf.h"
+
+#include "nsCOMPtr.h"
+#include "nsIStringBundle.h"
+#include "nsIPop3IncomingServer.h"
+#include "nsPop3IncomingServer.h"
+#include "nsIPop3Service.h"
+#include "nsMsgBaseCID.h"
+#include "nsMsgLocalCID.h"
+#include "nsMsgFolderFlags.h"
+#include "nsPop3Protocol.h"
+#include "nsAutoPtr.h"
+#include "nsMsgKeyArray.h"
+#include "nsIMsgLocalMailFolder.h"
+#include "nsIMsgAccountManager.h"
+#include "nsIMsgMailNewsUrl.h"
+#include "nsServiceManagerUtils.h"
+#include "nsIMutableArray.h"
+#include "nsMsgUtils.h"
+#include "nsComponentManagerUtils.h"
+#include "mozilla/Likely.h"
+
+static NS_DEFINE_CID(kCPop3ServiceCID, NS_POP3SERVICE_CID);
+
+class nsPop3GetMailChainer final : public nsIUrlListener
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIURLLISTENER
+
+  nsPop3GetMailChainer();
+  nsresult GetNewMailForServers(nsIPop3IncomingServer** servers, uint32_t count,
+                                nsIMsgWindow *msgWindow,
+                                nsIMsgFolder *folderToDownloadTo, nsIUrlListener *listener);
+  nsresult RunNextGetNewMail();
+protected:
+  ~nsPop3GetMailChainer();
+  nsCOMPtr <nsIMsgFolder> m_folderToDownloadTo;
+  nsCOMPtr <nsIMsgWindow> m_downloadingMsgWindow;
+  nsCOMArray<nsIPop3IncomingServer> m_serversToGetNewMailFor;
+  nsCOMPtr <nsIUrlListener> m_listener;
+};
+
+
+
+NS_IMPL_ISUPPORTS_INHERITED(nsPop3IncomingServer,
+                             nsMsgIncomingServer,
+                             nsIPop3IncomingServer,
+                             nsILocalMailIncomingServer)
+
+nsPop3IncomingServer::nsPop3IncomingServer()
+{
+  m_capabilityFlags =
+  POP3_AUTH_MECH_UNDEFINED |
+  POP3_HAS_AUTH_USER |               // should be always there
+  POP3_GURL_UNDEFINED |
+  POP3_UIDL_UNDEFINED |
+  POP3_TOP_UNDEFINED |
+  POP3_XTND_XLST_UNDEFINED;
+
+  m_canHaveFilters = true;
+  m_authenticated = false;
+}
+
+nsPop3IncomingServer::~nsPop3IncomingServer()
+{
+}
+
+NS_IMPL_SERVERPREF_BOOL(nsPop3IncomingServer,
+                        LeaveMessagesOnServer,
+                        "leave_on_server")
+
+NS_IMPL_SERVERPREF_BOOL(nsPop3IncomingServer,
+                        HeadersOnly,
+                        "headers_only")
+
+NS_IMPL_SERVERPREF_BOOL(nsPop3IncomingServer,
+                        DeleteMailLeftOnServer,
+                        "delete_mail_left_on_server")
+
+NS_IMPL_SERVERPREF_BOOL(nsPop3IncomingServer,
+                        DotFix,
+                        "dot_fix")
+
+NS_IMPL_SERVERPREF_BOOL(nsPop3IncomingServer,
+                        DeleteByAgeFromServer,
+                        "delete_by_age_from_server")
+
+NS_IMPL_SERVERPREF_INT(nsPop3IncomingServer,
+                        NumDaysToLeaveOnServer,
+                        "num_days_to_leave_on_server")
+
+
+NS_IMPL_SERVERPREF_BOOL(nsPop3IncomingServer,
+                            DeferGetNewMail,
+                            "defer_get_new_mail")
+
+NS_IMETHODIMP nsPop3IncomingServer::GetDeferredToAccount(nsACString& aRetVal)
+{
+  nsresult rv = GetCharValue("deferred_to_account", aRetVal);
+  if (aRetVal.IsEmpty())
+    return rv;
+  // We need to repair broken profiles that defer to hidden or invalid servers,
+  // so find out if the deferred to account has a valid non-hidden server, and
+  // if not, defer to the local folders inbox.
+  nsCOMPtr<nsIMsgAccountManager> acctMgr =
+                      do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID);
+  bool invalidAccount = true;
+  if (acctMgr)
+  {
+    nsCOMPtr<nsIMsgAccount> account;
+    nsCOMPtr<nsIMsgIncomingServer> server;
+    rv = acctMgr->GetAccount(aRetVal, getter_AddRefs(account));
+    if (account)
+    {
+      account->GetIncomingServer(getter_AddRefs(server));
+      if (server)
+        server->GetHidden(&invalidAccount);
+    }
+    if (invalidAccount)
+    {
+      nsCOMPtr<nsIMsgIncomingServer> localServer;
+      nsCOMPtr<nsIMsgAccount> localAccount;
+
+      rv = acctMgr->GetLocalFoldersServer(getter_AddRefs(localServer));
+      NS_ENSURE_SUCCESS(rv, rv);
+      // Try to copy any folders that have been stranded in the hidden account
+      // into the local folders account.
+      if (server)
+      {
+        nsCOMPtr<nsIMsgFolder> hiddenRootFolder;
+        nsCOMPtr<nsIMsgFolder> localFoldersRoot;
+        server->GetRootFolder(getter_AddRefs(hiddenRootFolder));
+        localServer->GetRootFolder(getter_AddRefs(localFoldersRoot));
+        if (hiddenRootFolder && localFoldersRoot)
+        {
+          // We're going to iterate over the folders in Local Folders-1,
+          // though I suspect only the Inbox will have messages. I don't
+          // think Sent Mail could end up here, but if any folders have
+          // messages, might as well copy them to the real Local Folders
+          // account.
+          nsCOMPtr<nsISimpleEnumerator> enumerator;
+          rv = hiddenRootFolder->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> subFolder(do_QueryInterface(item));
+              if (subFolder)
+              {
+                nsCOMPtr<nsIMsgDatabase> subFolderDB;
+                subFolder->GetMsgDatabase(getter_AddRefs(subFolderDB));
+                if (subFolderDB)
+                {
+                  // Copy any messages in this sub-folder of the hidden
+                  // account to the corresponding folder in Local Folders.
+                  RefPtr<nsMsgKeyArray> keys = new nsMsgKeyArray;
+                  rv = subFolderDB->ListAllKeys(keys);
+                  nsCOMPtr<nsIMutableArray> hdrsToCopy(do_CreateInstance(NS_ARRAY_CONTRACTID));
+                  MsgGetHeadersFromKeys(subFolderDB, keys->m_keys, hdrsToCopy);
+                  uint32_t numHdrs = 0;
+                  if (hdrsToCopy)
+                    hdrsToCopy->GetLength(&numHdrs);
+                  if (numHdrs)
+                  {
+                    // Look for a folder with the same name in Local Folders.
+                    nsCOMPtr<nsIMsgFolder> dest;
+                    nsString folderName;
+                    subFolder->GetName(folderName);
+                    localFoldersRoot->GetChildNamed(folderName,
+                                                    getter_AddRefs(dest));
+                    if (dest)
+                      dest->CopyMessages(subFolder, hdrsToCopy, false,
+                                         nullptr, nullptr, false,false);
+                    // Should we copy the folder if the dest doesn't exist?
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+      rv = acctMgr->FindAccountForServer(localServer, getter_AddRefs(localAccount));
+      NS_ENSURE_SUCCESS(rv, rv);
+      if (!localAccount)
+        return NS_ERROR_NOT_AVAILABLE;
+
+      localAccount->GetKey(aRetVal);
+      // Can't call SetDeferredToAccount because it calls GetDeferredToAccount.
+      return SetCharValue("deferred_to_account", aRetVal);
+    }
+  }
+  return rv;
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::SetDeferredToAccount(const nsACString& aAccountKey)
+{
+  nsCString deferredToAccount;
+  GetDeferredToAccount(deferredToAccount);
+  m_rootMsgFolder = nullptr; // clear this so we'll recalculate it on demand.
+  //Notify listeners who listen to every folder
+
+  nsresult rv =  SetCharValue("deferred_to_account", aAccountKey);
+  NS_ENSURE_SUCCESS(rv, rv);
+  nsCOMPtr<nsIFolderListener> folderListenerManager =
+           do_GetService(NS_MSGMAILSESSION_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv))
+  {
+
+    nsCOMPtr<nsIMsgFolder> rootFolder;
+    // use GetRootFolder, because that returns the real
+    // root, not the deferred to root.
+    rv = GetRootFolder(getter_AddRefs(rootFolder));
+    if (rootFolder)
+    {
+      // if isDeferred state has changed, send notification
+      if (aAccountKey.IsEmpty() != deferredToAccount.IsEmpty())
+      {
+        nsCOMPtr <nsIAtom> deferAtom = MsgGetAtom("isDeferred");
+        nsCOMPtr <nsIAtom> canFileAtom = MsgGetAtom("CanFileMessages");
+        folderListenerManager->OnItemBoolPropertyChanged(rootFolder, deferAtom,
+                  !deferredToAccount.IsEmpty(), deferredToAccount.IsEmpty());
+        folderListenerManager->OnItemBoolPropertyChanged(rootFolder, canFileAtom,
+                  deferredToAccount.IsEmpty(), !deferredToAccount.IsEmpty());
+
+        // this hack causes the account manager ds to send notifications to the
+        // xul content builder that make the changed acct appear or disappear
+        // from the folder pane and related menus.
+        nsCOMPtr<nsIMsgAccountManager> acctMgr =
+                            do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID);
+        if (acctMgr)
+        {
+          acctMgr->NotifyServerUnloaded(this);
+          acctMgr->NotifyServerLoaded(this);
+          // check if this newly deferred to account is the local folders account
+          // and needs to have a newly created INBOX.
+          if (!aAccountKey.IsEmpty())
+          {
+            nsCOMPtr <nsIMsgAccount> account;
+            acctMgr->GetAccount(aAccountKey, getter_AddRefs(account));
+            if (account)
+            {
+              nsCOMPtr <nsIMsgIncomingServer> server;
+              account->GetIncomingServer(getter_AddRefs(server));
+              if (server)
+              {
+                nsCOMPtr <nsILocalMailIncomingServer> incomingLocalServer = do_QueryInterface(server);
+                if (incomingLocalServer)
+                {
+                  nsCOMPtr <nsIMsgFolder> rootFolder;
+                  rv = server->GetRootFolder(getter_AddRefs(rootFolder));
+                  NS_ENSURE_SUCCESS(rv, rv);
+                  // this will fail if it already exists, which is fine.
+                  rootFolder->CreateSubfolder(NS_LITERAL_STRING("Inbox"), nullptr);
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+  return rv;
+}
+
+//NS_IMPL_GETSET(nsPop3IncomingServer, Authenticated, bool, m_authenticated);
+
+NS_IMETHODIMP nsPop3IncomingServer::GetAuthenticated(bool *aAuthenticated)
+{
+  NS_ENSURE_ARG_POINTER(aAuthenticated);
+  *aAuthenticated = m_authenticated;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::SetAuthenticated(bool aAuthenticated)
+{
+  m_authenticated = aAuthenticated;
+  return NS_OK;
+}
+
+nsresult
+nsPop3IncomingServer::GetPop3CapabilityFlags(uint32_t *flags)
+{
+  *flags = m_capabilityFlags;
+  return NS_OK;
+}
+
+nsresult
+nsPop3IncomingServer::SetPop3CapabilityFlags(uint32_t flags)
+{
+  m_capabilityFlags = flags;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::GetRootMsgFolder(nsIMsgFolder **aRootMsgFolder)
+{
+  NS_ENSURE_ARG_POINTER(aRootMsgFolder);
+  nsresult rv = NS_OK;
+  if (!m_rootMsgFolder)
+  {
+    nsCString deferredToAccount;
+    GetDeferredToAccount(deferredToAccount);
+    if (deferredToAccount.IsEmpty())
+    {
+      rv = CreateRootFolder();
+      m_rootMsgFolder = m_rootFolder;
+    }
+    else
+    {
+      nsCOMPtr <nsIMsgAccountManager> accountManager = do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID, &rv);
+      NS_ENSURE_SUCCESS(rv,rv);
+      nsCOMPtr <nsIMsgAccount> account;
+      rv = accountManager->GetAccount(deferredToAccount, getter_AddRefs(account));
+      NS_ENSURE_SUCCESS(rv,rv);
+      if (account)
+      {
+        nsCOMPtr <nsIMsgIncomingServer> incomingServer;
+        rv = account->GetIncomingServer(getter_AddRefs(incomingServer));
+        NS_ENSURE_SUCCESS(rv,rv);
+        // make sure we're not deferred to ourself...
+        if (incomingServer && incomingServer != this)
+          rv = incomingServer->GetRootMsgFolder(getter_AddRefs(m_rootMsgFolder));
+        else
+          rv = NS_ERROR_FAILURE;
+      }
+    }
+  }
+
+  NS_IF_ADDREF(*aRootMsgFolder = m_rootMsgFolder);
+  return m_rootMsgFolder ? rv : NS_ERROR_FAILURE;
+}
+
+nsresult nsPop3IncomingServer::GetInbox(nsIMsgWindow *msgWindow, nsIMsgFolder **inbox)
+{
+  NS_ENSURE_ARG_POINTER(inbox);
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  nsresult rv = GetRootMsgFolder(getter_AddRefs(rootFolder));
+  if(NS_SUCCEEDED(rv) && rootFolder)
+  {
+    rootFolder->GetFolderWithFlags(nsMsgFolderFlags::Inbox, inbox);
+  }
+
+  nsCOMPtr<nsIMsgLocalMailFolder> localInbox = do_QueryInterface(*inbox, &rv);
+  if (NS_SUCCEEDED(rv) && localInbox)
+  {
+    nsCOMPtr <nsIMsgDatabase> db;
+    rv = (*inbox)->GetMsgDatabase(getter_AddRefs(db));
+    if (NS_FAILED(rv))
+    {
+      (*inbox)->SetMsgDatabase(nullptr);
+      (void) localInbox->SetCheckForNewMessagesAfterParsing(true);
+      // this will cause a reparse of the mail folder.
+      localInbox->GetDatabaseWithReparse(nullptr, msgWindow, getter_AddRefs(db));
+      rv = NS_MSG_ERROR_FOLDER_SUMMARY_OUT_OF_DATE;
+    }
+  }
+  return rv;
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::PerformBiff(nsIMsgWindow *aMsgWindow)
+{
+  nsresult rv;
+  nsCOMPtr<nsIPop3Service> pop3Service(do_GetService(kCPop3ServiceCID, &rv));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMsgFolder> inbox;
+  nsCOMPtr<nsIMsgFolder> rootMsgFolder;
+  nsCOMPtr<nsIUrlListener> urlListener;
+  rv = GetRootMsgFolder(getter_AddRefs(rootMsgFolder));
+  NS_ENSURE_TRUE(rootMsgFolder, NS_ERROR_FAILURE);
+
+  rootMsgFolder->GetFolderWithFlags(nsMsgFolderFlags::Inbox,
+                                    getter_AddRefs(inbox));
+  if (!inbox)
+    return NS_ERROR_FAILURE;
+
+  nsCOMPtr <nsIMsgIncomingServer> server;
+  inbox->GetServer(getter_AddRefs(server));
+
+  server->SetPerformingBiff(true);
+
+  urlListener = do_QueryInterface(inbox);
+
+  bool downloadOnBiff = false;
+  rv = GetDownloadOnBiff(&downloadOnBiff);
+  if (downloadOnBiff)
+  {
+    nsCOMPtr <nsIMsgLocalMailFolder> localInbox = do_QueryInterface(inbox, &rv);
+    if (localInbox && NS_SUCCEEDED(rv))
+    {
+      bool valid = false;
+      nsCOMPtr <nsIMsgDatabase> db;
+      rv = inbox->GetMsgDatabase(getter_AddRefs(db));
+      if (NS_SUCCEEDED(rv) && db)
+        rv = db->GetSummaryValid(&valid);
+      if (NS_SUCCEEDED(rv) && valid)
+        rv = pop3Service->GetNewMail(aMsgWindow, urlListener, inbox, this, nullptr);
+      else
+      {
+        bool isLocked;
+        inbox->GetLocked(&isLocked);
+        if (!isLocked)
+          rv = localInbox->GetDatabaseWithReparse(urlListener, aMsgWindow, getter_AddRefs(db));
+        if (NS_SUCCEEDED(rv))
+          rv = localInbox->SetCheckForNewMessagesAfterParsing(true);
+      }
+    }
+  }
+  else
+    rv = pop3Service->CheckForNewMail(aMsgWindow, urlListener, inbox, this, nullptr);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::SetFlagsOnDefaultMailboxes()
+{
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  nsresult rv = GetRootFolder(getter_AddRefs(rootFolder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMsgLocalMailFolder> localFolder = do_QueryInterface(rootFolder, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // pop3 gets an inbox, but no queue (unsent messages)
+  localFolder->SetFlagsOnDefaultMailboxes(nsMsgFolderFlags::SpecialUse &
+                                         ~nsMsgFolderFlags::Queue);
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP nsPop3IncomingServer::CreateDefaultMailboxes()
+{
+  nsresult rv = CreateLocalFolder(NS_LITERAL_STRING("Inbox"));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return CreateLocalFolder(NS_LITERAL_STRING("Trash"));
+}
+
+// override this so we can say that deferred accounts can't have messages
+// filed to them, which will remove them as targets of all the move/copy
+// menu items.
+NS_IMETHODIMP
+nsPop3IncomingServer::GetCanFileMessagesOnServer(bool *aCanFileMessagesOnServer)
+{
+  NS_ENSURE_ARG_POINTER(aCanFileMessagesOnServer);
+
+  nsCString deferredToAccount;
+  GetDeferredToAccount(deferredToAccount);
+  *aCanFileMessagesOnServer = deferredToAccount.IsEmpty();
+  return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsPop3IncomingServer::GetCanCreateFoldersOnServer(bool *aCanCreateFoldersOnServer)
+{
+  NS_ENSURE_ARG_POINTER(aCanCreateFoldersOnServer);
+
+  nsCString deferredToAccount;
+  GetDeferredToAccount(deferredToAccount);
+  *aCanCreateFoldersOnServer = deferredToAccount.IsEmpty();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::VerifyLogon(nsIUrlListener *aUrlListener,
+                                  nsIMsgWindow *aMsgWindow, nsIURI **aURL)
+{
+  nsresult rv;
+  nsCOMPtr<nsIPop3Service> pop3Service = do_GetService(kCPop3ServiceCID, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+  return pop3Service->VerifyLogon(this, aUrlListener, aMsgWindow, aURL);
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::DownloadMailFromServers(nsIPop3IncomingServer** aServers,
+                              uint32_t aCount,
+                              nsIMsgWindow *aMsgWindow,
+                              nsIMsgFolder *aFolder,
+                              nsIUrlListener *aUrlListener)
+{
+  nsPop3GetMailChainer *getMailChainer = new nsPop3GetMailChainer;
+  NS_ENSURE_TRUE(getMailChainer, NS_ERROR_OUT_OF_MEMORY);
+  getMailChainer->AddRef(); // this object owns itself and releases when done.
+  return getMailChainer->GetNewMailForServers(aServers, aCount, aMsgWindow, aFolder, aUrlListener);
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::GetNewMail(nsIMsgWindow *aMsgWindow,
+                                               nsIUrlListener *aUrlListener,
+                                               nsIMsgFolder *aInbox,
+                                               nsIURI **aResult)
+{
+  nsresult rv;
+  nsCOMPtr<nsIPop3Service> pop3Service = do_GetService(kCPop3ServiceCID, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+  return pop3Service->GetNewMail(aMsgWindow, aUrlListener, aInbox, this, aResult);
+}
+
+// user has clicked get new messages on this server. If other servers defer to this server,
+// we need to get new mail for them. But if this server defers to an other server,
+// I think we only get new mail for this server.
+NS_IMETHODIMP
+nsPop3IncomingServer::GetNewMessages(nsIMsgFolder *aFolder, nsIMsgWindow *aMsgWindow,
+                      nsIUrlListener *aUrlListener)
+{
+  nsresult rv;
+
+  nsCOMPtr<nsIPop3Service> pop3Service = do_GetService(kCPop3ServiceCID, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr <nsIMsgFolder> inbox;
+  rv = GetInbox(aMsgWindow, getter_AddRefs(inbox));
+  NS_ENSURE_SUCCESS(rv, rv);
+  nsCOMPtr <nsIURI> url;
+  nsCOMPtr <nsIMsgIncomingServer> server;
+  nsCOMArray<nsIPop3IncomingServer> deferredServers;
+  nsCString deferredToAccount;
+  GetDeferredToAccount(deferredToAccount);
+
+  if (deferredToAccount.IsEmpty())
+  {
+    aFolder->GetServer(getter_AddRefs(server));
+    GetDeferredServers(server, deferredServers);
+  }
+  if (deferredToAccount.IsEmpty() && !deferredServers.IsEmpty())
+  {
+    nsPop3GetMailChainer *getMailChainer = new nsPop3GetMailChainer;
+    NS_ENSURE_TRUE(getMailChainer, NS_ERROR_OUT_OF_MEMORY);
+    getMailChainer->AddRef(); // this object owns itself and releases when done.
+    deferredServers.InsertElementAt(0, this);
+    return getMailChainer->GetNewMailForServers(deferredServers.Elements(),
+          deferredServers.Length(), aMsgWindow, inbox, aUrlListener);
+  }
+  if (m_runningProtocol)
+    return NS_MSG_FOLDER_BUSY;
+
+  return pop3Service->GetNewMail(aMsgWindow, aUrlListener, inbox, this, getter_AddRefs(url));
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::GetDownloadMessagesAtStartup(bool *getMessagesAtStartup)
+{
+  NS_ENSURE_ARG_POINTER(getMessagesAtStartup);
+  // GetMessages is not automatically done for pop servers at startup.
+  // We need to trigger that action. Return true.
+  *getMessagesAtStartup = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::GetCanBeDefaultServer(bool *canBeDefaultServer)
+{
+  NS_ENSURE_ARG_POINTER(canBeDefaultServer);
+  *canBeDefaultServer = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::GetCanSearchMessages(bool *canSearchMessages)
+{
+  // this will return false if this server is deferred, which is what we want.
+  return GetCanFileMessagesOnServer(canSearchMessages);
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::CloseCachedConnections()
+{
+  nsCOMPtr<nsIRequest> channel = do_QueryInterface(m_runningProtocol);
+  if (channel)
+    channel->Cancel(NS_ERROR_ABORT);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::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_NONE;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3IncomingServer::SetRunningProtocol(nsIPop3Protocol *aProtocol)
+{
+  NS_ASSERTION(!aProtocol || !m_runningProtocol, "overriding running protocol");
+  m_runningProtocol = aProtocol;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::GetRunningProtocol(nsIPop3Protocol **aProtocol)
+{
+  NS_ENSURE_ARG_POINTER(aProtocol);
+  NS_IF_ADDREF(*aProtocol = m_runningProtocol);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::AddUidlToMark(const char *aUidl, int32_t aMark)
+{
+  NS_ENSURE_ARG_POINTER(aUidl);
+
+  Pop3UidlEntry *uidlEntry = PR_NEWZAP(Pop3UidlEntry);
+  NS_ENSURE_TRUE(uidlEntry, NS_ERROR_OUT_OF_MEMORY);
+
+  uidlEntry->uidl = strdup(aUidl);
+  if (MOZ_UNLIKELY(!uidlEntry->uidl)) {
+    PR_Free(uidlEntry);
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  uidlEntry->status = (aMark == POP3_DELETE) ? DELETE_CHAR :
+                      (aMark == POP3_FETCH_BODY) ? FETCH_BODY : KEEP;
+  m_uidlsToMark.AppendElement(uidlEntry);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3IncomingServer::MarkMessages()
+{
+  nsresult rv;
+  if (m_runningProtocol)
+    rv = m_runningProtocol->MarkMessages(&m_uidlsToMark);
+  else
+  {
+    nsCString hostName;
+    nsCString userName;
+    nsCOMPtr<nsIFile> localPath;
+
+    GetLocalPath(getter_AddRefs(localPath));
+
+    GetHostName(hostName);
+    GetUsername(userName);
+    // do it all in one fell swoop
+    rv = nsPop3Protocol::MarkMsgForHost(hostName.get(), userName.get(), localPath, m_uidlsToMark);
+  }
+  uint32_t count = m_uidlsToMark.Length();
+  for (uint32_t i = 0; i < count; i++)
+  {
+    Pop3UidlEntry *ue = m_uidlsToMark[i];
+    PR_Free(ue->uidl);
+    PR_Free(ue);
+  }
+  m_uidlsToMark.Clear();
+  return rv;
+}
+
+NS_IMPL_ISUPPORTS(nsPop3GetMailChainer, nsIUrlListener)
+
+nsPop3GetMailChainer::nsPop3GetMailChainer()
+{
+}
+nsPop3GetMailChainer::~nsPop3GetMailChainer()
+{
+}
+
+nsresult nsPop3GetMailChainer::GetNewMailForServers(nsIPop3IncomingServer** servers,
+                                uint32_t count, nsIMsgWindow *msgWindow,
+                                nsIMsgFolder *folderToDownloadTo, nsIUrlListener *listener)
+{
+  NS_ENSURE_ARG_POINTER(folderToDownloadTo);
+
+  m_serversToGetNewMailFor.AppendElements(servers, count);
+  m_folderToDownloadTo = folderToDownloadTo;
+  m_downloadingMsgWindow = msgWindow;
+  m_listener = listener;
+  nsCOMPtr <nsIMsgDatabase> destFolderDB;
+
+  nsresult rv = folderToDownloadTo->GetMsgDatabase(getter_AddRefs(destFolderDB));
+  if (NS_FAILED(rv) || !destFolderDB)
+  {
+    nsCOMPtr <nsIMsgLocalMailFolder> localFolder = do_QueryInterface(folderToDownloadTo);
+    if (localFolder)
+    {
+      localFolder->GetDatabaseWithReparse(this, msgWindow, getter_AddRefs(destFolderDB));
+      return NS_OK;
+    }
+  }
+  return RunNextGetNewMail();
+}
+
+NS_IMETHODIMP
+nsPop3GetMailChainer::OnStartRunningUrl(nsIURI *url)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3GetMailChainer::OnStopRunningUrl(nsIURI *aUrl, nsresult aExitCode)
+{
+  return RunNextGetNewMail();
+}
+
+nsresult nsPop3GetMailChainer::RunNextGetNewMail()
+{
+  nsresult rv;
+  uint32_t numServersLeft = m_serversToGetNewMailFor.Count();
+
+  for (; numServersLeft > 0;)
+  {
+    nsCOMPtr<nsIPop3IncomingServer> popServer(m_serversToGetNewMailFor[0]);
+    m_serversToGetNewMailFor.RemoveObjectAt(0);
+    numServersLeft--;
+    if (popServer)
+    {
+      bool deferGetNewMail = false;
+      nsCOMPtr <nsIMsgIncomingServer> downloadingToServer;
+      m_folderToDownloadTo->GetServer(getter_AddRefs(downloadingToServer));
+      popServer->GetDeferGetNewMail(&deferGetNewMail);
+      nsCOMPtr<nsIMsgIncomingServer> server = do_QueryInterface(popServer);
+      nsCOMPtr<nsIPop3Protocol> protocol;
+      popServer->GetRunningProtocol(getter_AddRefs(protocol));
+      if ((deferGetNewMail || downloadingToServer == server) && !protocol)
+      {
+        // have to call routine that just gets mail for one server,
+        // and ignores deferred servers...
+        if (server)
+        {
+          nsCOMPtr <nsIURI> url;
+          nsCOMPtr<nsIPop3Service> pop3Service = do_GetService(kCPop3ServiceCID, &rv);
+          NS_ENSURE_SUCCESS(rv,rv);
+          return pop3Service->GetNewMail(m_downloadingMsgWindow, this, m_folderToDownloadTo, popServer, getter_AddRefs(url));
+        }
+      }
+    }
+  }
+  rv = m_listener ? m_listener->OnStopRunningUrl(nullptr, NS_OK) : NS_OK;
+  Release(); // release ref to ourself.
+  return rv;
+}

mailnews/local/src/nsPop3IncomingServer.h

@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef __nsPop3IncomingServer_h
+#define __nsPop3IncomingServer_h
+
+#include "mozilla/Attributes.h"
+#include "msgCore.h"
+#include "nsIPop3IncomingServer.h"
+#include "nsILocalMailIncomingServer.h"
+#include "nsMsgIncomingServer.h"
+#include "nsIPop3Protocol.h"
+#include "nsIMsgWindow.h"
+#include "nsMailboxServer.h"
+
+/* get some implementation from nsMsgIncomingServer */
+class nsPop3IncomingServer : public nsMailboxServer,
+                             public nsIPop3IncomingServer,
+                             public nsILocalMailIncomingServer
+
+{
+public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSIPOP3INCOMINGSERVER
+  NS_DECL_NSILOCALMAILINCOMINGSERVER
+
+  nsPop3IncomingServer();
+
+  NS_IMETHOD PerformBiff(nsIMsgWindow *aMsgWindow) override;
+  NS_IMETHOD GetDownloadMessagesAtStartup(bool *getMessages) override;
+  NS_IMETHOD GetCanBeDefaultServer(bool *canBeDefaultServer) override;
+  NS_IMETHOD GetCanSearchMessages(bool *canSearchMessages) override;
+  NS_IMETHOD GetOfflineSupportLevel(int32_t *aSupportLevel) override;
+  NS_IMETHOD CloseCachedConnections() override;
+  NS_IMETHOD GetRootMsgFolder(nsIMsgFolder **aRootMsgFolder) override;
+  NS_IMETHOD GetCanFileMessagesOnServer(bool *aCanFileMessagesOnServer) override;
+  NS_IMETHOD GetCanCreateFoldersOnServer(bool *aCanCreateFoldersOnServer) override;
+  NS_IMETHOD VerifyLogon(nsIUrlListener *aUrlListener, nsIMsgWindow *aMsgWindow,
+                         nsIURI **aURL) override;
+  NS_IMETHOD GetNewMessages(nsIMsgFolder *aFolder, nsIMsgWindow *aMsgWindow,
+                            nsIUrlListener *aUrlListener) override;
+
+protected:
+  virtual ~nsPop3IncomingServer();
+  nsresult GetInbox(nsIMsgWindow *msgWindow, nsIMsgFolder **inbox);
+
+private:
+  uint32_t m_capabilityFlags;
+  bool m_authenticated;
+  nsCOMPtr <nsIPop3Protocol> m_runningProtocol;
+  nsCOMPtr <nsIMsgFolder> m_rootMsgFolder;
+  nsTArray<Pop3UidlEntry*> m_uidlsToMark;
+};
+
+#endif

mailnews/local/src/nsPop3Protocol.h

@@ -0,0 +1,402 @@
+/* -*- 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/. */
+
+#ifndef nsPop3Protocol_h__
+#define nsPop3Protocol_h__
+
+#include "mozilla/Attributes.h"
+#include "nsIStreamListener.h"
+#include "nsIOutputStream.h"
+#include "nsIInputStream.h"
+#include "nsIPop3URL.h"
+#include "nsIPop3Sink.h"
+#include "nsMsgLineBuffer.h"
+#include "nsMsgProtocol.h"
+#include "nsIPop3Protocol.h"
+#include "MailNewsTypes.h"
+#include "nsIStringBundle.h"
+#include "nsIMsgStatusFeedback.h"
+#include "nsIMsgFolder.h" // TO include biffState enum. Change to bool later...
+#include "nsIAuthModule.h"
+#include "nsITimer.h"
+#include "nsIMsgAsyncPrompter.h"
+
+#include "prerror.h"
+#include "plhash.h"
+#include "nsCOMPtr.h"
+
+/* A more guaranteed way of making sure that we never get duplicate messages
+is to always get each message's UIDL (if the server supports it)
+and use these for storing up deletes which were not committed on the
+server.  Based on our experience, it looks like we do NOT need to
+do this (it has performance tradeoffs, etc.).  To turn it on, three
+things need to happen: #define POP_ALWAYS_USE_UIDL_FOR_DUPLICATES, verify that
+the uidl's are correctly getting added when the delete response is received,
+and change the POP3_QUIT_RESPONSE state to flush the newly committed deletes. */
+
+/*
+ * Cannot have the following line uncommented. It is defined.
+ * #ifdef POP_ALWAYS_USE_UIDL_FOR_DUPLICATES will always be evaluated
+ * as true.
+ *
+#define POP_ALWAYS_USE_UIDL_FOR_DUPLICATES 0
+ *
+ */
+
+#define MK_OUT_OF_MEMORY -207
+#define MK_POP3_PASSWORD_UNDEFINED -313
+#define XP_NO_ANSWER 14401
+#define XP_THE_PREVIOUSLY_ENTERED_PASSWORD_IS_INVALID_ETC 14405
+#define XP_PASSWORD_FOR_POP3_USER 14590
+
+#define OUTPUT_BUFFER_SIZE 8192 // maximum size of command string
+
+/* structure to hold data pertaining to the active state of
+ * a transfer in progress.
+ *
+ */
+
+enum Pop3CapabilityEnum {
+    POP3_CAPABILITY_UNDEFINED   = 0x00000000,
+    POP3_HAS_XSENDER            = 0x00000001,
+    POP3_GURL_UNDEFINED         = 0x00000002,
+    POP3_HAS_GURL               = 0x00000004,
+    POP3_UIDL_UNDEFINED         = 0x00000008,
+    POP3_HAS_UIDL               = 0x00000010,
+    POP3_XTND_XLST_UNDEFINED    = 0x00000020,
+    POP3_HAS_XTND_XLST          = 0x00000040,
+    POP3_TOP_UNDEFINED          = 0x00000080,
+    POP3_HAS_TOP                = 0x00000100,
+    POP3_AUTH_MECH_UNDEFINED    = 0x00000200,
+    POP3_HAS_AUTH_USER          = 0x00000400,
+    POP3_HAS_AUTH_LOGIN         = 0x00000800,
+    POP3_HAS_AUTH_PLAIN         = 0x00001000,
+    POP3_HAS_AUTH_CRAM_MD5      = 0x00002000,
+    POP3_HAS_AUTH_APOP          = 0x00004000,
+    POP3_HAS_AUTH_NTLM          = 0x00008000,
+    POP3_HAS_AUTH_MSN           = 0x00010000,
+    POP3_HAS_RESP_CODES         = 0x00020000,
+    POP3_HAS_AUTH_RESP_CODE     = 0x00040000,
+    POP3_HAS_STLS               = 0x00080000,
+    POP3_HAS_AUTH_GSSAPI        = 0x00100000
+};
+
+// TODO use value > 0?
+#define POP3_HAS_AUTH_NONE        0
+#define POP3_HAS_AUTH_ANY         0x00001C00
+#define POP3_HAS_AUTH_ANY_SEC     0x0011E000
+
+enum Pop3StatesEnum {
+    POP3_READ_PASSWORD,                         // 0
+                                                //
+    POP3_START_CONNECT,                         // 1
+    POP3_FINISH_CONNECT,                        // 2
+    POP3_WAIT_FOR_RESPONSE,                     // 3
+    POP3_WAIT_FOR_START_OF_CONNECTION_RESPONSE, // 4
+    POP3_SEND_USERNAME,                         // 5
+
+    POP3_SEND_PASSWORD,                         // 6
+    POP3_SEND_STAT,                             // 7
+    POP3_GET_STAT,                              // 8
+    POP3_SEND_LIST,                             // 9
+    POP3_GET_LIST,                              // 10
+
+    POP3_SEND_UIDL_LIST,                        // 11
+    POP3_GET_UIDL_LIST,                         // 12
+    POP3_SEND_XTND_XLST_MSGID,                  // 13
+    POP3_GET_XTND_XLST_MSGID,                   // 14
+    POP3_GET_MSG,                               // 15
+
+    POP3_SEND_TOP,                              // 16
+    POP3_TOP_RESPONSE,                          // 17
+    POP3_SEND_RETR,                             // 18
+    POP3_RETR_RESPONSE,                         // 19
+    POP3_SEND_DELE,                             // 20
+
+    POP3_DELE_RESPONSE,                         // 21
+    POP3_SEND_QUIT,                             // 22
+    POP3_DONE,                                  // 23
+    POP3_ERROR_DONE,                            // 24
+    POP3_FREE,                                  // 25
+    POP3_SEND_AUTH,                             // 26
+    POP3_AUTH_RESPONSE,                         // 27
+    POP3_SEND_CAPA,                             // 28
+    POP3_CAPA_RESPONSE,                         // 29
+    POP3_PROCESS_AUTH,                          // 30
+    POP3_NEXT_AUTH_STEP,                        // 31
+
+    POP3_AUTH_LOGIN,                            // 32
+    POP3_AUTH_LOGIN_RESPONSE,                   // 33
+    POP3_AUTH_NTLM,                             // 34
+    POP3_AUTH_NTLM_RESPONSE,                    // 35
+    POP3_SEND_XSENDER,                          // 36
+    POP3_XSENDER_RESPONSE,                      // 37
+    POP3_SEND_GURL,                             // 38
+
+    POP3_GURL_RESPONSE,                         // 39
+    POP3_QUIT_RESPONSE,                         // 40
+    POP3_TLS_RESPONSE,                          // 41
+
+    POP3_AUTH_GSSAPI,                           // 42
+    POP3_AUTH_GSSAPI_FIRST,                     // 43
+    POP3_AUTH_GSSAPI_STEP,                      // 44
+
+    /**
+     * Async wait to obtain the password and deal with the result.
+     * The *PREOBTAIN* states are used for where we try and get the password
+     * before we've initiated a connection to the server.
+     */
+    POP3_OBTAIN_PASSWORD_EARLY,                 // 45
+    POP3_FINISH_OBTAIN_PASSWORD_EARLY,          // 46
+    POP3_OBTAIN_PASSWORD_BEFORE_USERNAME,       // 47
+    POP3_FINISH_OBTAIN_PASSWORD_BEFORE_USERNAME,// 48
+    POP3_OBTAIN_PASSWORD_BEFORE_PASSWORD,       // 49
+    POP3_FINISH_OBTAIN_PASSWORD_BEFORE_PASSWORD // 50
+};
+
+
+#define KEEP        'k'         /* If we want to keep this item on server. */
+#define DELETE_CHAR 'd'         /* If we want to delete this item. */
+#define TOO_BIG     'b'         /* item left on server because it was too big */
+#define FETCH_BODY  'f'         /* Fetch full body of a partial msg */
+
+typedef struct Pop3UidlEntry { /* information about this message */
+    char* uidl;
+    char  status; // KEEP=='k', DELETE='d' TOO_BIG='b' FETCH_BODY='f'
+    uint32_t dateReceived; // time message received, used for aging
+} Pop3UidlEntry;
+
+typedef struct Pop3UidlHost {
+    char* host;
+    char* user;
+    PLHashTable * hash;
+    Pop3UidlEntry* uidlEntries;
+    struct Pop3UidlHost* next;
+} Pop3UidlHost;
+
+typedef struct Pop3MsgInfo {
+    int32_t msgnum;
+    int32_t size;
+    char* uidl;
+} Pop3MsgInfo;
+
+typedef struct _Pop3ConData {
+    bool leave_on_server;     /* Whether we're supposed to leave messages
+                                   on server. */
+    bool headers_only;        /* Whether to just fetch headers on initial
+                                   downloads. */
+    int32_t size_limit;         /* Leave messages bigger than this on the
+                                   server and only download a partial
+                                   message. */
+    uint32_t capability_flags; /* What capability this server has? */
+
+    Pop3StatesEnum next_state;  /* the next state or action to be taken */
+    Pop3StatesEnum next_state_after_response;
+    bool pause_for_read;       /* Pause now for next read? */
+
+    bool command_succeeded;   /* did the last command succeed? */
+    bool list_done;    /* did we get the complete list of msgIDs? */
+    int32_t first_msg;
+
+    uint32_t obuffer_size;
+    uint32_t obuffer_fp;
+
+    int32_t  really_new_messages;
+    int32_t  real_new_counter;
+    int32_t number_of_messages;
+    Pop3MsgInfo  *msg_info;      /* Message sizes and uidls (used only if we
+                                   are playing games that involve leaving
+                                   messages on the server). */
+    int32_t last_accessed_msg;
+    int32_t cur_msg_size;
+    bool truncating_cur_msg;  /* are we using top and uidl? */
+    bool msg_del_started;     /* True if MSG_BeginMailDel...
+                                 * called
+                                 */
+    bool only_check_for_new_mail;
+    nsMsgBiffState biffstate;     /* If just checking for, what the answer is. */
+
+    bool verify_logon;        /* true if we're just seeing if we can logon */
+
+    void *msg_closure;
+
+    bool graph_progress_bytes_p; /* whether we should display info about
+                                      the bytes transferred (usually we
+                                      display info about the number of
+                                      messages instead.) */
+
+    Pop3UidlHost *uidlinfo;
+    PLHashTable *newuidl;
+    char *only_uidl;              /* If non-NULL, then load only this UIDL. */
+
+    bool get_url;
+    bool seenFromHeader;
+    int32_t parsed_bytes;
+    int32_t pop3_size;
+    bool dot_fix;
+    bool assumed_end;
+    nsresult urlStatus;
+} Pop3ConData;
+
+// State Flags (Note, I use the word state in terms of storing
+// state information about the connection (authentication, have we sent
+// commands, etc. I do not intend it to refer to protocol state)
+#define POP3_PAUSE_FOR_READ      0x00000001  /* should we pause for the next read */
+#define POP3_PASSWORD_FAILED    0x00000002
+#define POP3_STOPLOGIN              0x00000004  /* error loging in, so stop here */
+#define POP3_AUTH_FAILURE           0x00000008  /* extended code said authentication failed */
+
+
+class nsPop3Protocol : public nsMsgProtocol,
+                       public nsIPop3Protocol,
+                       public nsIMsgAsyncPromptListener
+{
+public:
+  nsPop3Protocol(nsIURI* aURL);
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSIPOP3PROTOCOL
+  NS_DECL_NSIMSGASYNCPROMPTLISTENER
+
+  nsresult Initialize(nsIURI * aURL);
+  virtual nsresult LoadUrl(nsIURI *aURL, nsISupports * aConsumer = nullptr) override;
+  void Cleanup();
+
+  const char* GetUsername() { return m_username.get(); }
+  void SetUsername(const char* name);
+
+  nsresult StartGetAsyncPassword(Pop3StatesEnum aNextState);
+
+  NS_IMETHOD OnTransportStatus(nsITransport *transport, nsresult status, int64_t progress, int64_t progressMax) override;
+  NS_IMETHOD OnStopRequest(nsIRequest *request, nsISupports * aContext, nsresult aStatus) override;
+  NS_IMETHOD Cancel(nsresult status) override;
+
+  static void MarkMsgInHashTable(PLHashTable *hashTable, const Pop3UidlEntry *uidl,
+                                  bool *changed);
+
+  static nsresult MarkMsgForHost(const char *hostName, const char *userName,
+                                      nsIFile *mailDirectory,
+                                      nsTArray<Pop3UidlEntry*> &UIDLArray);
+private:
+  virtual ~nsPop3Protocol();
+  nsCString m_ApopTimestamp;
+  nsCOMPtr<nsIStringBundle> mLocalBundle;
+
+  nsCString m_username;
+  nsCString m_senderInfo;
+  nsCString m_commandResponse;
+  nsCString m_GSSAPICache;
+
+  // Used for asynchronous password prompts to store the password temporarily.
+  nsCString m_passwordResult;
+
+  // progress state information
+  void UpdateProgressPercent(int64_t totalDone, int64_t total);
+  void UpdateStatus(const char16_t *aStatusName);
+  void UpdateStatusWithString(const char16_t *aString);
+  nsresult FormatCounterString(const nsString &stringName,
+                               uint32_t count1,
+                               uint32_t count2,
+                               nsString &resultString);
+
+  int32_t m_bytesInMsgReceived;
+  int64_t m_totalFolderSize;
+  int64_t m_totalDownloadSize;  /* Number of bytes we're going to
+                                   download.  Might be much less
+                                   than the total_folder_size. */
+  int64_t m_totalBytesReceived; // total # bytes received for the connection
+
+  virtual nsresult ProcessProtocolState(nsIURI * url, nsIInputStream * inputStream,
+                                        uint64_t sourceOffset, uint32_t length) override;
+  virtual int32_t Pop3SendData(const char * dataBuffer, bool aSuppressLogging = false);
+
+  virtual const char* GetType() override {return "pop3";}
+
+  nsCOMPtr<nsIURI> m_url;
+  nsCOMPtr<nsIPop3Sink> m_nsIPop3Sink;
+  nsCOMPtr<nsIPop3IncomingServer> m_pop3Server;
+
+  nsMsgLineStreamBuffer   * m_lineStreamBuffer; // used to efficiently extract lines from the incoming data stream
+  Pop3ConData* m_pop3ConData;
+  void FreeMsgInfo();
+  void Abort();
+
+  bool m_tlsEnabled;
+  int32_t m_socketType;
+  bool m_password_already_sent;
+  bool m_needToRerunUrl;
+
+  void SetCapFlag(uint32_t flag);
+  void ClearCapFlag(uint32_t flag);
+  bool TestCapFlag(uint32_t flag);
+  uint32_t GetCapFlags();
+
+  void    InitPrefAuthMethods(int32_t authMethodPrefValue);
+  nsresult ChooseAuthMethod();
+  void    MarkAuthMethodAsFailed(int32_t failedAuthMethod);
+  void    ResetAuthMethods();
+  int32_t m_prefAuthMethods; // set of capability flags for auth methods
+  int32_t m_failedAuthMethods; // ditto
+  int32_t m_currentAuthMethod; // exactly one capability flag, or 0
+
+  int32_t m_listpos;
+
+  nsresult HandleLine(char *line, uint32_t line_length);
+
+  nsresult GetApopTimestamp();
+
+  //////////////////////////////////////////////////////////////////////////////////////////
+      // Begin Pop3 protocol state handlers
+      //////////////////////////////////////////////////////////////////////////////////////////
+  int32_t WaitForStartOfConnectionResponse(nsIInputStream* inputStream,
+                                           uint32_t length);
+  int32_t WaitForResponse(nsIInputStream* inputStream,
+                          uint32_t length);
+  int32_t Error(const char* err_code, const char16_t **params = nullptr,
+                uint32_t length = 0);
+  int32_t SendAuth();
+  int32_t AuthResponse(nsIInputStream* inputStream, uint32_t length);
+  int32_t SendCapa();
+  int32_t CapaResponse(nsIInputStream* inputStream, uint32_t length);
+  int32_t SendTLSResponse();
+  int32_t ProcessAuth();
+  int32_t NextAuthStep();
+  int32_t AuthLogin();
+  int32_t AuthLoginResponse();
+  int32_t AuthNtlm();
+  int32_t AuthNtlmResponse();
+  int32_t AuthGSSAPI();
+  int32_t AuthGSSAPIResponse(bool first);
+  int32_t SendUsername();
+  int32_t SendPassword();
+  int32_t SendStatOrGurl(bool sendStat);
+  int32_t SendStat();
+  int32_t GetStat();
+  int32_t SendGurl();
+  int32_t GurlResponse();
+  int32_t SendList();
+  int32_t GetList(nsIInputStream* inputStream, uint32_t length);
+  int32_t HandleNoUidListAvailable();
+  int32_t SendXtndXlstMsgid();
+  int32_t GetXtndXlstMsgid(nsIInputStream* inputStream, uint32_t length);
+  int32_t SendUidlList();
+  int32_t GetUidlList(nsIInputStream* inputStream, uint32_t length);
+  int32_t GetMsg();
+  int32_t SendTop();
+  int32_t SendXsender();
+  int32_t XsenderResponse();
+  int32_t SendRetr();
+
+  int32_t RetrResponse(nsIInputStream* inputStream, uint32_t length);
+  int32_t TopResponse(nsIInputStream* inputStream, uint32_t length);
+  int32_t SendDele();
+  int32_t DeleResponse();
+  int32_t CommitState(bool remove_last_entry);
+
+  Pop3StatesEnum GetNextPasswordObtainState();
+  nsresult RerunUrl();
+};
+
+#endif /* nsPop3Protocol_h__ */

mailnews/local/src/nsPop3Service.cpp

@@ -0,0 +1,711 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h"    // precompiled header...
+
+#include "nsPop3Service.h"
+#include "nsIMsgIncomingServer.h"
+#include "nsIPop3IncomingServer.h"
+
+#include "nsPop3URL.h"
+#include "nsPop3Sink.h"
+#include "nsPop3Protocol.h"
+#include "nsMsgLocalCID.h"
+#include "nsMsgBaseCID.h"
+#include "nsCOMPtr.h"
+#include "nsIMsgWindow.h"
+#include "nsINetUtil.h"
+
+#include "nsIRDFService.h"
+#include "nsRDFCID.h"
+#include "nsIDirectoryService.h"
+#include "nsMailDirServiceDefs.h"
+#include "prprf.h"
+#include "nsMsgUtils.h"
+#include "nsIMsgAccountManager.h"
+#include "nsIMsgAccount.h"
+#include "nsLocalMailFolder.h"
+#include "nsIMailboxUrl.h"
+#include "nsIPrompt.h"
+#include "nsINetUtil.h"
+#include "nsComponentManagerUtils.h"
+#include "nsServiceManagerUtils.h"
+#include "mozilla/Services.h"
+
+#define PREF_MAIL_ROOT_POP3 "mail.root.pop3"        // old - for backward compatibility only
+#define PREF_MAIL_ROOT_POP3_REL "mail.root.pop3-rel"
+
+static NS_DEFINE_CID(kPop3UrlCID, NS_POP3URL_CID);
+static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
+
+nsPop3Service::nsPop3Service()
+{
+}
+
+nsPop3Service::~nsPop3Service()
+{}
+
+NS_IMPL_ISUPPORTS(nsPop3Service,
+                   nsIPop3Service,
+                   nsIProtocolHandler,
+                   nsIMsgProtocolInfo)
+
+NS_IMETHODIMP nsPop3Service::CheckForNewMail(nsIMsgWindow* aMsgWindow,
+                                             nsIUrlListener *aUrlListener,
+                                             nsIMsgFolder *aInbox,
+                                             nsIPop3IncomingServer *aPopServer,
+                                             nsIURI **aURL)
+{
+  return GetMail(false /* don't download, just check */,
+                 aMsgWindow, aUrlListener, aInbox, aPopServer, aURL);
+}
+
+
+nsresult nsPop3Service::GetNewMail(nsIMsgWindow *aMsgWindow,
+                                   nsIUrlListener *aUrlListener,
+                                   nsIMsgFolder *aInbox,
+                                   nsIPop3IncomingServer *aPopServer,
+                                   nsIURI **aURL)
+{
+  return GetMail(true /* download */,
+                 aMsgWindow, aUrlListener, aInbox, aPopServer, aURL);
+}
+
+nsresult nsPop3Service::GetMail(bool downloadNewMail,
+                                nsIMsgWindow *aMsgWindow,
+                                nsIUrlListener *aUrlListener,
+                                nsIMsgFolder *aInbox,
+                                nsIPop3IncomingServer *aPopServer,
+                                nsIURI **aURL)
+{
+
+  NS_ENSURE_ARG_POINTER(aInbox);
+  int32_t popPort = -1;
+
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  nsCOMPtr<nsIURI> url;
+
+  server = do_QueryInterface(aPopServer);
+  NS_ENSURE_TRUE(server, NS_MSG_INVALID_OR_MISSING_SERVER);
+
+  nsCOMPtr<nsIMsgLocalMailFolder> destLocalFolder = do_QueryInterface(aInbox);
+  if (destLocalFolder)
+  {
+    // We don't know the needed size yet, so at least check
+    // if there is some free space (1MB) in the message store.
+    bool destFolderTooBig;
+    destLocalFolder->WarnIfLocalFileTooBig(aMsgWindow, 0xFFFF, &destFolderTooBig);
+    if (destFolderTooBig)
+      return NS_MSG_ERROR_WRITING_MAIL_FOLDER;
+  }
+
+  nsCString popHost;
+  nsCString popUser;
+  nsresult rv = server->GetHostName(popHost);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (popHost.IsEmpty())
+    return NS_MSG_INVALID_OR_MISSING_SERVER;
+
+  rv = server->GetPort(&popPort);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = server->GetUsername(popUser);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (popUser.IsEmpty())
+    return NS_MSG_SERVER_USERNAME_MISSING;
+
+  nsCString escapedUsername;
+  MsgEscapeString(popUser, nsINetUtil::ESCAPE_XALPHAS, escapedUsername);
+
+  if (NS_SUCCEEDED(rv) && aPopServer)
+  {
+    // now construct a pop3 url...
+    // we need to escape the username because it may contain
+    // characters like / % or @
+    char * urlSpec = (downloadNewMail)
+      ? PR_smprintf("pop3://%s@%s:%d", escapedUsername.get(), popHost.get(), popPort)
+      : PR_smprintf("pop3://%s@%s:%d/?check", escapedUsername.get(), popHost.get(), popPort);
+    rv = BuildPop3Url(urlSpec, aInbox, aPopServer, aUrlListener, getter_AddRefs(url), aMsgWindow);
+    PR_smprintf_free(urlSpec);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  NS_ENSURE_TRUE(url, rv);
+
+  if (NS_SUCCEEDED(rv))
+    rv = RunPopUrl(server, url);
+
+  if (aURL) // we already have a ref count on pop3url...
+    NS_IF_ADDREF(*aURL = url);
+
+  return rv;
+}
+
+NS_IMETHODIMP nsPop3Service::VerifyLogon(nsIMsgIncomingServer *aServer,
+                                         nsIUrlListener *aUrlListener,
+                                         nsIMsgWindow *aMsgWindow,
+                                         nsIURI **aURL)
+{
+  NS_ENSURE_ARG_POINTER(aServer);
+  nsCString popHost;
+  nsCString popUser;
+  int32_t popPort = -1;
+
+  nsresult rv = aServer->GetHostName(popHost);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (popHost.IsEmpty())
+    return NS_MSG_INVALID_OR_MISSING_SERVER;
+
+  rv = aServer->GetPort(&popPort);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = aServer->GetUsername(popUser);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (popUser.IsEmpty())
+    return NS_MSG_SERVER_USERNAME_MISSING;
+
+  nsCString escapedUsername;
+  MsgEscapeString(popUser, nsINetUtil::ESCAPE_XALPHAS, escapedUsername);
+
+  nsCOMPtr<nsIPop3IncomingServer> popServer = do_QueryInterface(aServer, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  // now construct a pop3 url...
+  // we need to escape the username because it may contain
+  // characters like / % or @
+  char *urlSpec = PR_smprintf("pop3://%s@%s:%d/?verifyLogon",
+                              escapedUsername.get(), popHost.get(), popPort);
+  NS_ENSURE_TRUE(urlSpec, NS_ERROR_OUT_OF_MEMORY);
+
+  nsCOMPtr<nsIURI> url;
+  rv = BuildPop3Url(urlSpec, nullptr, popServer, aUrlListener,
+                    getter_AddRefs(url), aMsgWindow);
+  PR_smprintf_free(urlSpec);
+
+  if (NS_SUCCEEDED(rv) && url)
+  {
+    rv = RunPopUrl(aServer, url);
+    if (NS_SUCCEEDED(rv) && aURL)
+      url.forget(aURL);
+  }
+
+  return rv;
+}
+
+nsresult nsPop3Service::BuildPop3Url(const char *urlSpec,
+                                     nsIMsgFolder *inbox,
+                                     nsIPop3IncomingServer *server,
+                                     nsIUrlListener *aUrlListener,
+                                     nsIURI **aUrl,
+                                     nsIMsgWindow *aMsgWindow)
+{
+  nsresult rv;
+
+  nsPop3Sink *pop3Sink = new nsPop3Sink();
+
+  NS_ENSURE_TRUE(pop3Sink, NS_ERROR_OUT_OF_MEMORY);
+
+  pop3Sink->SetPopServer(server);
+  pop3Sink->SetFolder(inbox);
+
+  // now create a pop3 url and a protocol instance to run the url....
+  nsCOMPtr<nsIPop3URL> pop3Url = do_CreateInstance(kPop3UrlCID, &rv);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  pop3Url->SetPop3Sink(pop3Sink);
+
+  rv = CallQueryInterface(pop3Url, aUrl);
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  rv = (*aUrl)->SetSpec(nsDependentCString(urlSpec));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  nsCOMPtr<nsIMsgMailNewsUrl> mailnewsurl = do_QueryInterface(pop3Url);
+  if (mailnewsurl)
+  {
+    if (aUrlListener)
+      mailnewsurl->RegisterListener(aUrlListener);
+    if (aMsgWindow)
+      mailnewsurl->SetMsgWindow(aMsgWindow);
+  }
+
+  return rv;
+}
+
+nsresult nsPop3Service::RunPopUrl(nsIMsgIncomingServer *aServer, nsIURI *aUrlToRun)
+{
+
+  NS_ENSURE_ARG_POINTER(aServer);
+  NS_ENSURE_ARG_POINTER(aUrlToRun);
+
+  nsCString userName;
+
+  // load up required server information
+  // we store the username unescaped in the server
+  // so there is no need to unescape it
+  nsresult rv = aServer->GetRealUsername(userName);
+
+  // find out if the server is busy or not...if the server is busy, we are
+  // *NOT* going to run the url
+  bool serverBusy = false;
+  rv = aServer->GetServerBusy(&serverBusy);
+  NS_ENSURE_SUCCESS(rv, rv);
+  if (!serverBusy)
+  {
+    RefPtr<nsPop3Protocol> protocol = new nsPop3Protocol(aUrlToRun);
+    if (protocol)
+    {
+      // the protocol stores the unescaped username, so there is no need to escape it.
+      protocol->SetUsername(userName.get());
+      rv = protocol->LoadUrl(aUrlToRun);
+      if (NS_FAILED(rv))
+        aServer->SetServerBusy(false);
+    }
+  }
+  else
+  {
+    nsCOMPtr<nsIMsgMailNewsUrl> url = do_QueryInterface(aUrlToRun);
+    if (url)
+      AlertServerBusy(url);
+    rv = NS_ERROR_FAILURE;
+  }
+  return rv;
+}
+
+
+NS_IMETHODIMP nsPop3Service::GetScheme(nsACString &aScheme)
+{
+    aScheme.AssignLiteral("pop3");
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3Service::GetDefaultPort(int32_t *aDefaultPort)
+{
+    NS_ENSURE_ARG_POINTER(aDefaultPort);
+    *aDefaultPort = nsIPop3URL::DEFAULT_POP3_PORT;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3Service::AllowPort(int32_t port, const char *scheme, bool *_retval)
+{
+    *_retval = true; // allow pop on any port
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3Service::GetDefaultDoBiff(bool *aDoBiff)
+{
+    NS_ENSURE_ARG_POINTER(aDoBiff);
+    // by default, do biff for POP3 servers
+    *aDoBiff = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3Service::GetProtocolFlags(uint32_t *result)
+{
+    NS_ENSURE_ARG_POINTER(result);
+    *result = URI_NORELATIVE | URI_DANGEROUS_TO_LOAD | ALLOWS_PROXY |
+              URI_FORBIDS_COOKIE_ACCESS;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3Service::NewURI(const nsACString &aSpec,
+                                    const char *aOriginCharset, // ignored
+                                    nsIURI *aBaseURI,
+                                    nsIURI **_retval)
+{
+    NS_ENSURE_ARG_POINTER(_retval);
+
+    nsAutoCString folderUri(aSpec);
+    nsCOMPtr<nsIRDFResource> resource;
+    int32_t offset = folderUri.FindChar('?');
+    if (offset != kNotFound)
+      folderUri.SetLength(offset);
+
+    const char *uidl = PL_strstr(nsCString(aSpec).get(), "uidl=");
+    NS_ENSURE_TRUE(uidl, NS_ERROR_FAILURE);
+
+    nsresult rv;
+
+    nsCOMPtr<nsIRDFService> rdfService(do_GetService(kRDFServiceCID, &rv));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = rdfService->GetResource(folderUri, getter_AddRefs(resource));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIMsgFolder> folder = do_QueryInterface(resource, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIMsgIncomingServer> server;
+
+    nsLocalFolderScanState folderScanState;
+    nsCOMPtr<nsIMsgLocalMailFolder> localFolder = do_QueryInterface(folder);
+    nsCOMPtr<nsIMailboxUrl> mailboxUrl = do_QueryInterface(aBaseURI);
+
+    if (mailboxUrl && localFolder)
+    {
+      rv = localFolder->GetFolderScanState(&folderScanState);
+      NS_ENSURE_SUCCESS(rv, rv);
+      nsCOMPtr<nsIMsgDBHdr> msgHdr;
+      nsMsgKey msgKey;
+      mailboxUrl->GetMessageKey(&msgKey);
+      folder->GetMessageHeader(msgKey, getter_AddRefs(msgHdr));
+      // we do this to get the account key
+      if (msgHdr)
+        localFolder->GetUidlFromFolder(&folderScanState, msgHdr);
+      if (!folderScanState.m_accountKey.IsEmpty())
+      {
+        nsCOMPtr<nsIMsgAccountManager> accountManager =
+                 do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID, &rv);
+        if (accountManager)
+        {
+          nsCOMPtr<nsIMsgAccount> account;
+          accountManager->GetAccount(folderScanState.m_accountKey, getter_AddRefs(account));
+          if (account)
+            account->GetIncomingServer(getter_AddRefs(server));
+        }
+      }
+    }
+
+    if (!server)
+      rv = folder->GetServer(getter_AddRefs(server));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIPop3IncomingServer> popServer = do_QueryInterface(server,&rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCString hostname;
+    nsCString username;
+    server->GetHostName(hostname);
+    server->GetUsername(username);
+
+    int32_t port;
+    server->GetPort(&port);
+    if (port == -1) port = nsIPop3URL::DEFAULT_POP3_PORT;
+
+    // we need to escape the username because it may contain
+    // characters like / % or @
+    nsCString escapedUsername;
+    MsgEscapeString(username, nsINetUtil::ESCAPE_XALPHAS, escapedUsername);
+
+    nsAutoCString popSpec("pop://");
+    popSpec += escapedUsername;
+    popSpec += "@";
+    popSpec += hostname;
+    popSpec += ":";
+    popSpec.AppendInt(port);
+    popSpec += "?";
+    popSpec += uidl;
+    nsCOMPtr<nsIUrlListener> urlListener = do_QueryInterface(folder, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    rv = BuildPop3Url(popSpec.get(), folder, popServer,
+                      urlListener, _retval, nullptr);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsCOMPtr<nsIMsgMailNewsUrl> mailnewsurl = do_QueryInterface(*_retval, &rv);
+    if (NS_SUCCEEDED(rv))
+    {
+      // escape the username before we call SetUsername().  we do this because GetUsername()
+      // will unescape the username
+      mailnewsurl->SetUsername(escapedUsername);
+    }
+
+    nsCOMPtr<nsIPop3URL> popurl = do_QueryInterface(mailnewsurl, &rv);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    nsAutoCString messageUri (aSpec);
+    if (!strncmp(messageUri.get(), "mailbox:", 8))
+      messageUri.Replace(0, 8, "mailbox-message:");
+    offset = messageUri.Find("?number=");
+    if (offset != kNotFound)
+      messageUri.Replace(offset, 8, "#");
+    offset = messageUri.FindChar('&');
+    if (offset != kNotFound)
+      messageUri.SetLength(offset);
+    popurl->SetMessageUri(messageUri.get());
+    nsCOMPtr<nsIPop3Sink> pop3Sink;
+    rv = popurl->GetPop3Sink(getter_AddRefs(pop3Sink));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    pop3Sink->SetBuildMessageUri(true);
+
+    return NS_OK;
+}
+
+void nsPop3Service::AlertServerBusy(nsIMsgMailNewsUrl *url)
+{
+  nsresult rv;
+  nsCOMPtr<nsIStringBundleService> bundleService =
+    mozilla::services::GetStringBundleService();
+  if (!bundleService)
+    return;
+  nsCOMPtr<nsIStringBundle> bundle;
+  rv = bundleService->CreateBundle("chrome://messenger/locale/localMsgs.properties", getter_AddRefs(bundle));
+  NS_ENSURE_SUCCESS_VOID(rv);
+
+  nsCOMPtr<nsIMsgWindow> msgWindow;
+  nsCOMPtr<nsIPrompt> dialog;
+  rv = url->GetMsgWindow(getter_AddRefs(msgWindow)); //it is ok to have null msgWindow, for example when biffing
+  if (NS_FAILED(rv) || !msgWindow)
+    return;
+
+  rv = msgWindow->GetPromptDialog(getter_AddRefs(dialog));
+  NS_ENSURE_SUCCESS_VOID(rv);
+
+  nsString accountName;
+  nsCOMPtr<nsIMsgIncomingServer> server;
+  rv = url->GetServer(getter_AddRefs(server));
+  NS_ENSURE_SUCCESS_VOID(rv);
+  rv = server->GetPrettyName(accountName);
+  NS_ENSURE_SUCCESS_VOID(rv);
+
+  const char16_t *params[] = { accountName.get() };
+  nsString alertString;
+  nsString dialogTitle;
+  bundle->FormatStringFromName(
+    u"pop3ServerBusy",
+    params, 1, getter_Copies(alertString));
+  bundle->FormatStringFromName(
+    u"pop3ErrorDialogTitle",
+    params, 1, getter_Copies(dialogTitle));
+  if (!alertString.IsEmpty())
+    dialog->Alert(dialogTitle.get(), alertString.get());
+}
+
+NS_IMETHODIMP nsPop3Service::NewChannel(nsIURI *aURI, nsIChannel **_retval)
+{
+  return NewChannel2(aURI, nullptr, _retval);
+}
+
+NS_IMETHODIMP nsPop3Service::NewChannel2(nsIURI *aURI,
+                                         nsILoadInfo *aLoadInfo,
+                                         nsIChannel **_retval)
+{
+  NS_ENSURE_ARG_POINTER(aURI);
+  nsresult rv;
+
+  nsCOMPtr<nsIMsgMailNewsUrl> url = do_QueryInterface(aURI, &rv);
+  nsCString realUserName;
+  if (NS_SUCCEEDED(rv) && url)
+  {
+    nsCOMPtr<nsIMsgIncomingServer> server;
+    url->GetServer(getter_AddRefs(server));
+    if (server)
+    {
+      // find out if the server is busy or not...if the server is busy, we are
+      // *NOT* going to run the url. The error code isn't quite right...
+      // We might want to put up an error right here.
+      bool serverBusy = false;
+      rv = server->GetServerBusy(&serverBusy);
+      if (serverBusy)
+      {
+        AlertServerBusy(url);
+        return NS_MSG_FOLDER_BUSY;
+      }
+      server->GetRealUsername(realUserName);
+    }
+  }
+
+  RefPtr<nsPop3Protocol> protocol = new nsPop3Protocol(aURI);
+  NS_ENSURE_TRUE(protocol, NS_ERROR_OUT_OF_MEMORY);
+
+  rv = protocol->Initialize(aURI);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = protocol->SetLoadInfo(aLoadInfo);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  protocol->SetUsername(realUserName.get());
+
+  return CallQueryInterface(protocol, _retval);
+}
+
+
+NS_IMETHODIMP
+nsPop3Service::SetDefaultLocalPath(nsIFile *aPath)
+{
+    NS_ENSURE_ARG(aPath);
+    return NS_SetPersistentFile(PREF_MAIL_ROOT_POP3_REL, PREF_MAIL_ROOT_POP3, aPath);
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetDefaultLocalPath(nsIFile **aResult)
+{
+    NS_ENSURE_ARG_POINTER(aResult);
+    *aResult = nullptr;
+
+    bool havePref;
+    nsCOMPtr<nsIFile> localFile;
+    nsresult rv = NS_GetPersistentFile(PREF_MAIL_ROOT_POP3_REL,
+                                       PREF_MAIL_ROOT_POP3,
+                                       NS_APP_MAIL_50_DIR,
+                                       havePref,
+                                       getter_AddRefs(localFile));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    bool exists;
+    rv = localFile->Exists(&exists);
+    if (NS_SUCCEEDED(rv) && !exists)
+        rv = localFile->Create(nsIFile::DIRECTORY_TYPE, 0775);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (!havePref || !exists) {
+        rv = NS_SetPersistentFile(PREF_MAIL_ROOT_POP3_REL, PREF_MAIL_ROOT_POP3, localFile);
+        NS_ASSERTION(NS_SUCCEEDED(rv), "Failed to set root dir pref.");
+    }
+
+    NS_IF_ADDREF(*aResult = localFile);
+    return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsPop3Service::GetServerIID(nsIID **aServerIID)
+{
+    *aServerIID = new nsIID(NS_GET_IID(nsIPop3IncomingServer));
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetRequiresUsername(bool *aRequiresUsername)
+{
+    NS_ENSURE_ARG_POINTER(aRequiresUsername);
+    *aRequiresUsername = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetPreflightPrettyNameWithEmailAddress(bool *aPreflightPrettyNameWithEmailAddress)
+{
+    NS_ENSURE_ARG_POINTER(aPreflightPrettyNameWithEmailAddress);
+    *aPreflightPrettyNameWithEmailAddress = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetCanLoginAtStartUp(bool *aCanLoginAtStartUp)
+{
+    NS_ENSURE_ARG_POINTER(aCanLoginAtStartUp);
+    *aCanLoginAtStartUp = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetCanDelete(bool *aCanDelete)
+{
+    NS_ENSURE_ARG_POINTER(aCanDelete);
+    *aCanDelete = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetCanDuplicate(bool *aCanDuplicate)
+{
+    NS_ENSURE_ARG_POINTER(aCanDuplicate);
+    *aCanDuplicate = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetCanGetMessages(bool *aCanGetMessages)
+{
+    NS_ENSURE_ARG_POINTER(aCanGetMessages);
+    *aCanGetMessages = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetCanGetIncomingMessages(bool *aCanGetIncomingMessages)
+{
+    NS_ENSURE_ARG_POINTER(aCanGetIncomingMessages);
+    *aCanGetIncomingMessages = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetShowComposeMsgLink(bool *showComposeMsgLink)
+{
+    NS_ENSURE_ARG_POINTER(showComposeMsgLink);
+    *showComposeMsgLink = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetFoldersCreatedAsync(bool *aAsyncCreation)
+{
+  NS_ENSURE_ARG_POINTER(aAsyncCreation);
+  *aAsyncCreation = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::GetDefaultServerPort(bool isSecure, int32_t *aPort)
+{
+    NS_ENSURE_ARG_POINTER(aPort);
+
+    if (!isSecure)
+      return GetDefaultPort(aPort);
+
+    *aPort = nsIPop3URL::DEFAULT_POP3S_PORT;
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::NotifyDownloadStarted(nsIMsgFolder *aFolder)
+{
+  nsTObserverArray<nsCOMPtr<nsIPop3ServiceListener> >::ForwardIterator
+    iter(mListeners);
+  nsCOMPtr<nsIPop3ServiceListener> listener;
+  while (iter.HasMore()) {
+    listener = iter.GetNext();
+    listener->OnDownloadStarted(aFolder);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::NotifyDownloadProgress(nsIMsgFolder *aFolder,
+                                      uint32_t aNumMessages,
+                                      uint32_t aNumTotalMessages)
+{
+  nsTObserverArray<nsCOMPtr<nsIPop3ServiceListener> >::ForwardIterator
+    iter(mListeners);
+  nsCOMPtr<nsIPop3ServiceListener> listener;
+  while (iter.HasMore()) {
+    listener = iter.GetNext();
+    listener->OnDownloadProgress(aFolder, aNumMessages, aNumTotalMessages);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3Service::NotifyDownloadCompleted(nsIMsgFolder *aFolder,
+                                       uint32_t aNumMessages)
+{
+  nsTObserverArray<nsCOMPtr<nsIPop3ServiceListener> >::ForwardIterator
+    iter(mListeners);
+  nsCOMPtr<nsIPop3ServiceListener> listener;
+  while (iter.HasMore()) {
+    listener = iter.GetNext();
+    listener->OnDownloadCompleted(aFolder, aNumMessages);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3Service::AddListener(nsIPop3ServiceListener *aListener)
+{
+  NS_ENSURE_ARG_POINTER(aListener);
+  mListeners.AppendElementUnlessExists(aListener);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsPop3Service::RemoveListener(nsIPop3ServiceListener *aListener)
+{
+  NS_ENSURE_ARG_POINTER(aListener);
+  mListeners.RemoveElement(aListener);
+  return NS_OK;
+}

mailnews/local/src/nsPop3Service.h

@@ -0,0 +1,52 @@
+/* -*- 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/. */
+
+#ifndef nsPop3Service_h___
+#define nsPop3Service_h___
+
+#include "nscore.h"
+
+#include "nsIPop3Service.h"
+#include "nsIPop3URL.h"
+#include "nsIUrlListener.h"
+#include "nsIStreamListener.h"
+#include "nsIProtocolHandler.h"
+#include "nsIMsgProtocolInfo.h"
+#include "nsTObserverArray.h"
+
+class nsIMsgMailNewsUrl;
+
+class nsPop3Service : public nsIPop3Service,
+                      public nsIProtocolHandler,
+                      public nsIMsgProtocolInfo
+{
+public:
+
+  nsPop3Service();
+  
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIPOP3SERVICE
+  NS_DECL_NSIPROTOCOLHANDLER
+  NS_DECL_NSIMSGPROTOCOLINFO
+
+protected:
+  virtual ~nsPop3Service();
+  nsresult GetMail(bool downloadNewMail,
+                   nsIMsgWindow* aMsgWindow, 
+                   nsIUrlListener * aUrlListener,
+                   nsIMsgFolder *inbox, 
+                   nsIPop3IncomingServer *popServer,
+                   nsIURI ** aURL);
+  // convience function to make constructing of the pop3 url easier...
+  nsresult BuildPop3Url(const char * urlSpec, nsIMsgFolder *inbox,
+                    nsIPop3IncomingServer *, nsIUrlListener * aUrlListener,
+                    nsIURI ** aUrl, nsIMsgWindow *aMsgWindow);
+
+  nsresult RunPopUrl(nsIMsgIncomingServer * aServer, nsIURI * aUrlToRun);
+  void AlertServerBusy(nsIMsgMailNewsUrl *url);
+  nsTObserverArray<nsCOMPtr<nsIPop3ServiceListener> > mListeners;
+};
+
+#endif /* nsPop3Service_h___ */

mailnews/local/src/nsPop3Sink.h

@@ -0,0 +1,78 @@
+/* -*- 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/. */
+#ifndef nsPop3Sink_h__
+#define nsPop3Sink_h__
+
+#include "nscore.h"
+#include "nsIURL.h"
+#include "nsIPop3Sink.h"
+#include "nsIOutputStream.h"
+#include "prmem.h"
+#include "prio.h"
+#include "plstr.h"
+#include "prenv.h"
+#include "nsIMsgFolder.h"
+#include "nsAutoPtr.h"
+#include "nsTArray.h"
+#include "nsStringGlue.h"
+
+class nsParseNewMailState;
+class nsIMsgFolder;
+
+struct partialRecord
+{
+  partialRecord();
+  ~partialRecord();
+
+  nsCOMPtr<nsIMsgDBHdr> m_msgDBHdr;
+  nsCString m_uidl;
+};
+
+class nsPop3Sink : public nsIPop3Sink
+{
+public:
+    nsPop3Sink();
+
+    NS_DECL_THREADSAFE_ISUPPORTS
+    NS_DECL_NSIPOP3SINK
+    nsresult GetServerFolder(nsIMsgFolder **aFolder);
+    nsresult FindPartialMessages();
+    void CheckPartialMessages(nsIPop3Protocol *protocol);
+
+    static char*  GetDummyEnvelope(void);
+
+protected:
+    virtual ~nsPop3Sink();
+    nsresult WriteLineToMailbox(const nsACString& buffer);
+    nsresult ReleaseFolderLock();
+    nsresult HandleTempDownloadFailed(nsIMsgWindow *msgWindow);
+
+    bool m_authed;
+    nsCString m_accountUrl;
+    uint32_t m_biffState;
+    int32_t m_numNewMessages;
+    int32_t m_numNewMessagesInFolder;
+    int32_t m_numMsgsDownloaded;
+    bool m_senderAuthed;
+    nsCString m_outputBuffer;
+    nsCOMPtr<nsIPop3IncomingServer> m_popServer;
+    //Currently the folder we want to update about biff info
+    nsCOMPtr<nsIMsgFolder> m_folder;
+    RefPtr<nsParseNewMailState> m_newMailParser;
+    nsCOMPtr <nsIOutputStream> m_outFileStream; // the file we write to, which may be temporary
+    nsCOMPtr<nsIMsgPluggableStore> m_msgStore;
+    bool m_uidlDownload;
+    bool m_buildMessageUri;
+    bool m_downloadingToTempFile;
+    nsCOMPtr <nsIFile> m_tmpDownloadFile;
+    nsCOMPtr<nsIMsgWindow> m_window;
+    nsCString m_messageUri;
+    nsCString m_baseMessageUri;
+    nsCString m_origMessageUri;
+    nsCString m_accountKey;
+    nsTArray<partialRecord*> m_partialMsgsArray;
+};
+
+#endif

mailnews/local/src/nsPop3URL.cpp

@@ -0,0 +1,63 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 "msgCore.h"    // precompiled header...
+
+#include "nsIURL.h"
+#include "nsPop3URL.h"
+#include "nsPop3Protocol.h"
+#include "nsStringGlue.h"
+#include "prmem.h"
+#include "plstr.h"
+#include "prprf.h"
+
+nsPop3URL::nsPop3URL(): nsMsgMailNewsUrl()
+{
+}
+
+nsPop3URL::~nsPop3URL()
+{
+}
+
+NS_IMPL_ISUPPORTS_INHERITED(nsPop3URL, nsMsgMailNewsUrl, nsIPop3URL)
+
+
+////////////////////////////////////////////////////////////////////////////////////
+// Begin nsIPop3URL specific support
+////////////////////////////////////////////////////////////////////////////////////
+
+nsresult nsPop3URL::SetPop3Sink(nsIPop3Sink* aPop3Sink)
+{
+    if (aPop3Sink)
+        m_pop3Sink = aPop3Sink;
+    return NS_OK;
+}
+
+nsresult nsPop3URL::GetPop3Sink(nsIPop3Sink** aPop3Sink)
+{
+    if (aPop3Sink)
+    {
+        *aPop3Sink = m_pop3Sink;
+        NS_IF_ADDREF(*aPop3Sink);
+    }
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3URL::GetMessageUri(char ** aMessageUri)
+{
+    if(!aMessageUri || m_messageUri.IsEmpty())
+        return NS_ERROR_NULL_POINTER;
+    *aMessageUri = ToNewCString(m_messageUri);
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsPop3URL::SetMessageUri(const char *aMessageUri)
+{
+    if (aMessageUri)
+        m_messageUri = aMessageUri;
+    return NS_OK;
+}

mailnews/local/src/nsPop3URL.h

@@ -0,0 +1,30 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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/. */
+
+#ifndef nsPop3URL_h__
+#define nsPop3URL_h__
+
+#include "nsIPop3URL.h"
+#include "nsMsgMailNewsUrl.h"
+#include "nsIMsgIncomingServer.h"
+#include "nsCOMPtr.h"
+
+class nsPop3URL : public nsIPop3URL, public nsMsgMailNewsUrl
+{
+public:
+  NS_DECL_NSIPOP3URL
+  nsPop3URL();
+  NS_DECL_ISUPPORTS_INHERITED
+
+protected:
+  virtual ~nsPop3URL();
+
+  nsCString m_messageUri;
+
+  /* Pop3 specific event sinks */
+  nsCOMPtr<nsIPop3Sink> m_pop3Sink;
+};
+
+#endif // nsPop3URL_h__

mailnews/local/src/nsRssIncomingServer.cpp

@@ -0,0 +1,260 @@
+/* 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 "nsIRssService.h"
+#include "nsRssIncomingServer.h"
+#include "nsMsgFolderFlags.h"
+#include "nsINewsBlogFeedDownloader.h"
+#include "nsMsgBaseCID.h"
+#include "nsIFile.h"
+#include "nsIMsgFolderNotificationService.h"
+
+#include "nsIMsgLocalMailFolder.h"
+#include "nsIDBFolderInfo.h"
+#include "nsServiceManagerUtils.h"
+#include "nsComponentManagerUtils.h"
+#include "nsArrayUtils.h"
+#include "nsMsgUtils.h"
+
+nsrefcnt nsRssIncomingServer::gInstanceCount    = 0;
+
+NS_IMPL_ISUPPORTS_INHERITED(nsRssIncomingServer,
+                             nsMsgIncomingServer,
+                             nsIRssIncomingServer,
+                             nsIMsgFolderListener,
+                             nsILocalMailIncomingServer)
+
+nsRssIncomingServer::nsRssIncomingServer()
+{
+  m_canHaveFilters = true;
+
+  if (gInstanceCount == 0)
+  {
+    nsresult rv;
+    nsCOMPtr<nsIMsgFolderNotificationService> notifyService =
+      do_GetService(NS_MSGNOTIFICATIONSERVICE_CONTRACTID, &rv);
+    if (NS_SUCCEEDED(rv))
+      notifyService->AddListener(this,
+          nsIMsgFolderNotificationService::folderAdded |
+          nsIMsgFolderNotificationService::folderDeleted |
+          nsIMsgFolderNotificationService::folderMoveCopyCompleted |
+          nsIMsgFolderNotificationService::folderRenamed);
+  }
+
+  gInstanceCount++;
+}
+
+nsRssIncomingServer::~nsRssIncomingServer()
+{
+  gInstanceCount--;
+
+  if (gInstanceCount == 0)
+  {
+    nsresult rv;
+    nsCOMPtr<nsIMsgFolderNotificationService> notifyService =
+      do_GetService(NS_MSGNOTIFICATIONSERVICE_CONTRACTID, &rv);
+    if (NS_SUCCEEDED(rv))
+      notifyService->RemoveListener(this);
+  }
+}
+
+nsresult nsRssIncomingServer::FillInDataSourcePath(const nsAString& aDataSourceName,
+                                                   nsIFile ** aLocation)
+{
+  nsresult rv;
+  // Get the local path for this server.
+  nsCOMPtr<nsIFile> localFile;
+  rv = GetLocalPath(getter_AddRefs(localFile));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Append the name of the subscriptions data source.
+  rv = localFile->Append(aDataSourceName);
+  NS_IF_ADDREF(*aLocation = localFile);
+  return rv;
+}
+
+// nsIRSSIncomingServer methods
+NS_IMETHODIMP nsRssIncomingServer::GetSubscriptionsDataSourcePath(nsIFile ** aLocation)
+{
+  return FillInDataSourcePath(NS_LITERAL_STRING("feeds.rdf"), aLocation);
+}
+
+NS_IMETHODIMP nsRssIncomingServer::GetFeedItemsDataSourcePath(nsIFile ** aLocation)
+{
+  return FillInDataSourcePath(NS_LITERAL_STRING("feeditems.rdf"), aLocation);
+}
+
+NS_IMETHODIMP nsRssIncomingServer::CreateDefaultMailboxes()
+{
+  // For Feeds, all we have is Trash.
+  return CreateLocalFolder(NS_LITERAL_STRING("Trash"));
+}
+
+NS_IMETHODIMP nsRssIncomingServer::SetFlagsOnDefaultMailboxes()
+{
+  nsCOMPtr<nsIMsgFolder> rootFolder;
+  nsresult rv = GetRootFolder(getter_AddRefs(rootFolder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr<nsIMsgLocalMailFolder> localFolder = do_QueryInterface(rootFolder, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  localFolder->SetFlagsOnDefaultMailboxes(nsMsgFolderFlags::Trash);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::PerformBiff(nsIMsgWindow *aMsgWindow)
+{
+  // Get the account root (server) folder and pass it on.
+  nsCOMPtr<nsIMsgFolder> rootRSSFolder;
+  GetRootMsgFolder(getter_AddRefs(rootRSSFolder));
+  nsCOMPtr<nsIUrlListener> urlListener = do_QueryInterface(rootRSSFolder);
+  nsresult rv;
+  bool isBiff = true;
+  nsCOMPtr<nsINewsBlogFeedDownloader> rssDownloader =
+    do_GetService("@mozilla.org/newsblog-feed-downloader;1", &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rssDownloader->DownloadFeed(rootRSSFolder, urlListener, isBiff, aMsgWindow);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::GetNewMail(nsIMsgWindow *aMsgWindow,
+                                              nsIUrlListener *aUrlListener,
+                                              nsIMsgFolder *aFolder,
+                                              nsIURI **_retval)
+{
+  // Pass the selected folder on to the downloader.
+  NS_ENSURE_ARG_POINTER(aFolder);
+  nsresult rv;
+  bool isBiff = false;
+  nsCOMPtr<nsINewsBlogFeedDownloader> rssDownloader =
+    do_GetService("@mozilla.org/newsblog-feed-downloader;1", &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rssDownloader->DownloadFeed(aFolder, aUrlListener, isBiff, aMsgWindow);
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::GetAccountManagerChrome(nsAString& aResult)
+{
+  aResult.AssignLiteral("am-newsblog.xul");
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::GetOfflineSupportLevel(int32_t *aSupportLevel)
+{
+  NS_ENSURE_ARG_POINTER(aSupportLevel);
+  *aSupportLevel = OFFLINE_SUPPORT_LEVEL_NONE;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::GetSupportsDiskSpace(bool *aSupportsDiskSpace)
+{
+  NS_ENSURE_ARG_POINTER(aSupportsDiskSpace);
+  *aSupportsDiskSpace = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::GetServerRequiresPasswordForBiff(bool *aServerRequiresPasswordForBiff)
+{
+  NS_ENSURE_ARG_POINTER(aServerRequiresPasswordForBiff);
+  // For Feed folders, we don't require a password.
+  *aServerRequiresPasswordForBiff = false;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::GetCanSearchMessages(bool *canSearchMessages)
+{
+  NS_ENSURE_ARG_POINTER(canSearchMessages);
+  *canSearchMessages = true;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::MsgAdded(nsIMsgDBHdr *aMsg)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::MsgsClassified(nsIArray *aMsgs,
+                                                  bool aJunkProcessed,
+                                                  bool aTraitProcessed)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::MsgsDeleted(nsIArray *aMsgs)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::MsgsMoveCopyCompleted(bool aMove,
+                                                         nsIArray *aSrcMsgs,
+                                                         nsIMsgFolder *aDestFolder,
+  nsIArray *aDestMsgs)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::MsgKeyChanged(nsMsgKey aOldKey,
+                                                 nsIMsgDBHdr *aNewHdr)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::FolderAdded(nsIMsgFolder *aFolder)
+{
+  // Nothing to do. Not necessary for new folder adds, as a new folder never
+  // has a subscription.
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::FolderDeleted(nsIMsgFolder *aFolder)
+{
+  // Not necessary for folder deletes, which are move to Trash and handled by
+  // movecopy. Virtual folder or trash folder deletes send a folderdeleted,
+  // but these should have no subscriptions already.
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsRssIncomingServer::FolderMoveCopyCompleted(bool aMove,
+                                                           nsIMsgFolder *aSrcFolder,
+                                                           nsIMsgFolder *aDestFolder)
+{
+  return FolderChanged(aDestFolder, aSrcFolder, (aMove ? "move" : "copy"));
+}
+
+NS_IMETHODIMP nsRssIncomingServer::FolderRenamed(nsIMsgFolder *aOrigFolder,
+                                                 nsIMsgFolder *aNewFolder)
+{
+  return FolderChanged(aNewFolder, aOrigFolder, "rename");
+}
+
+NS_IMETHODIMP nsRssIncomingServer::ItemEvent(nsISupports *aItem,
+                                             const nsACString &aEvent,
+                                             nsISupports *aData)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+nsresult nsRssIncomingServer::FolderChanged(nsIMsgFolder *aFolder,
+                                            nsIMsgFolder *aOrigFolder,
+                                            const char *aAction)
+{
+  if (!aFolder)
+    return NS_OK;
+
+  nsresult rv;
+  nsCOMPtr<nsINewsBlogFeedDownloader> rssDownloader =
+    do_GetService("@mozilla.org/newsblog-feed-downloader;1", &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  rssDownloader->UpdateSubscriptionsDS(aFolder, aOrigFolder, aAction);
+  return rv;
+}
+
+NS_IMETHODIMP
+nsRssIncomingServer::GetSortOrder(int32_t* aSortOrder)
+{
+  NS_ENSURE_ARG_POINTER(aSortOrder);
+  *aSortOrder = 400000000;
+  return NS_OK;
+}

mailnews/local/src/nsRssIncomingServer.h

@@ -0,0 +1,43 @@
+/* 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/. */
+
+#ifndef __nsRssIncomingServer_h
+#define __nsRssIncomingServer_h
+
+#include "mozilla/Attributes.h"
+#include "nsIRssIncomingServer.h"
+#include "nsILocalMailIncomingServer.h"
+#include "nsMsgIncomingServer.h"
+#include "nsIMsgFolderListener.h"
+#include "nsMailboxServer.h"
+
+class nsRssIncomingServer : public nsMailboxServer,
+                            public nsIRssIncomingServer,
+                            public nsILocalMailIncomingServer,
+                            public nsIMsgFolderListener
+
+{
+public:
+    NS_DECL_ISUPPORTS_INHERITED
+    NS_DECL_NSIRSSINCOMINGSERVER
+    NS_DECL_NSILOCALMAILINCOMINGSERVER
+    NS_DECL_NSIMSGFOLDERLISTENER
+
+    NS_IMETHOD GetOfflineSupportLevel(int32_t *aSupportLevel) override;
+    NS_IMETHOD GetSupportsDiskSpace(bool *aSupportsDiskSpace) override;
+    NS_IMETHOD GetAccountManagerChrome(nsAString& aResult) override;
+    NS_IMETHOD PerformBiff(nsIMsgWindow *aMsgWindow) override;
+    NS_IMETHOD GetServerRequiresPasswordForBiff(bool *aServerRequiresPasswordForBiff) override;
+    NS_IMETHOD GetCanSearchMessages(bool *canSearchMessages) override;
+    NS_IMETHOD GetSortOrder(int32_t* aSortOrder) override;
+
+    nsRssIncomingServer();
+protected:
+    virtual ~nsRssIncomingServer();
+    nsresult FolderChanged(nsIMsgFolder *aFolder, nsIMsgFolder *aOrigFolder, const char *aAction);
+    nsresult FillInDataSourcePath(const nsAString& aDataSourceName, nsIFile ** aLocation);
+    static nsrefcnt gInstanceCount;
+};
+
+#endif /* __nsRssIncomingServer_h */

mailnews/local/src/nsRssService.cpp

@@ -0,0 +1,130 @@
+/* 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 "nsRssService.h"
+#include "nsIRssIncomingServer.h"
+#include "nsCOMPtr.h"
+#include "nsIFile.h"
+#include "nsMailDirServiceDefs.h"
+#include "nsIProperties.h"
+#include "nsServiceManagerUtils.h"
+
+nsRssService::nsRssService()
+{
+}
+
+nsRssService::~nsRssService()
+{
+}
+
+NS_IMPL_ISUPPORTS(nsRssService,
+                   nsIRssService,
+                   nsIMsgProtocolInfo)
+                   
+NS_IMETHODIMP nsRssService::GetDefaultLocalPath(nsIFile * *aDefaultLocalPath)
+{
+    NS_ENSURE_ARG_POINTER(aDefaultLocalPath);
+    *aDefaultLocalPath = nullptr;
+    
+    nsCOMPtr<nsIFile> localFile;
+    nsCOMPtr<nsIProperties> dirService(do_GetService("@mozilla.org/file/directory_service;1"));
+    if (!dirService) return NS_ERROR_FAILURE;
+    dirService->Get(NS_APP_MAIL_50_DIR, NS_GET_IID(nsIFile), getter_AddRefs(localFile));
+    if (!localFile) return NS_ERROR_FAILURE;
+
+    bool exists;
+    nsresult rv = localFile->Exists(&exists);
+    if (NS_SUCCEEDED(rv) && !exists)
+        rv = localFile->Create(nsIFile::DIRECTORY_TYPE, 0775);
+    if (NS_FAILED(rv)) return rv;
+   
+    NS_IF_ADDREF(*aDefaultLocalPath = localFile);
+    return NS_OK;
+
+}
+
+NS_IMETHODIMP nsRssService::SetDefaultLocalPath(nsIFile * aDefaultLocalPath)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssService::GetServerIID(nsIID * *aServerIID)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssService::GetRequiresUsername(bool *aRequiresUsername)
+{
+    NS_ENSURE_ARG_POINTER(aRequiresUsername);
+    *aRequiresUsername = false;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetPreflightPrettyNameWithEmailAddress(bool *aPreflightPrettyNameWithEmailAddress)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsRssService::GetCanDelete(bool *aCanDelete)
+{
+    NS_ENSURE_ARG_POINTER(aCanDelete);
+    *aCanDelete = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetCanLoginAtStartUp(bool *aCanLoginAtStartUp)
+{
+    NS_ENSURE_ARG_POINTER(aCanLoginAtStartUp);
+    *aCanLoginAtStartUp = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetCanDuplicate(bool *aCanDuplicate)
+{
+    NS_ENSURE_ARG_POINTER(aCanDuplicate);
+    *aCanDuplicate = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetDefaultServerPort(bool isSecure, int32_t *_retval)
+{
+    *_retval = -1;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetCanGetMessages(bool *aCanGetMessages)
+{
+    NS_ENSURE_ARG_POINTER(aCanGetMessages);
+    *aCanGetMessages = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetCanGetIncomingMessages(bool *aCanGetIncomingMessages)
+{
+    NS_ENSURE_ARG_POINTER(aCanGetIncomingMessages);
+    *aCanGetIncomingMessages = true;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetDefaultDoBiff(bool *aDefaultDoBiff)
+{
+    NS_ENSURE_ARG_POINTER(aDefaultDoBiff);
+    // by default, do biff for RSS feeds
+    *aDefaultDoBiff = true;    
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetShowComposeMsgLink(bool *aShowComposeMsgLink)
+{
+    NS_ENSURE_ARG_POINTER(aShowComposeMsgLink);
+    *aShowComposeMsgLink = false;    
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsRssService::GetFoldersCreatedAsync(bool *aAsyncCreation)
+{
+  NS_ENSURE_ARG_POINTER(aAsyncCreation);
+  *aAsyncCreation = false;
+  return NS_OK;
+}

mailnews/local/src/nsRssService.h

@@ -0,0 +1,25 @@
+/* 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/. */
+
+#ifndef nsRssService_h___
+#define nsRssService_h___
+
+#include "nsIRssService.h"
+#include "nsIMsgProtocolInfo.h"
+
+class nsRssService : public nsIMsgProtocolInfo, public nsIRssService
+{
+public:
+
+  nsRssService();
+  
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIRSSSERVICE
+  NS_DECL_NSIMSGPROTOCOLINFO
+
+private:
+  virtual ~nsRssService();
+};
+
+#endif /* nsRssService_h___ */