Revert "Add Basilisk"

This reverts commit e72ef92b5bdc43cd2584198e2e54e951b70299e8.

1 files changed, 0 insertions, 608 deletions

diff --git a/application/basilisk/components/migration/ESEDBReader.jsm b/application/basilisk/components/migration/ESEDBReader.jsm
deleted file mode 100644
index 6192c8667..000000000
--- a/application/basilisk/components/migration/ESEDBReader.jsm
+++ /dev/null
@@ -1,608 +0,0 @@
-/* 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/. */
-
-"use strict";
-
-this.EXPORTED_SYMBOLS = ["ESEDBReader"]; /* exported ESEDBReader */
-
-const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
-
-Cu.import("resource://gre/modules/ctypes.jsm");
-Cu.import("resource://gre/modules/XPCOMUtils.jsm");
-Cu.import("resource://gre/modules/Services.jsm");
-XPCOMUtils.defineLazyGetter(this, "log", () => {
-  let ConsoleAPI = Cu.import("resource://gre/modules/Console.jsm", {}).ConsoleAPI;
-  let consoleOptions = {
-    maxLogLevelPref: "browser.esedbreader.loglevel",
-    prefix: "ESEDBReader",
-  };
-  return new ConsoleAPI(consoleOptions);
-});
-
-XPCOMUtils.defineLazyModuleGetter(this, "OS", "resource://gre/modules/osfile.jsm");
-
-// We have a globally unique identifier for ESE instances. A new one
-// is used for each different database opened.
-let gESEInstanceCounter = 0;
-
-// We limit the length of strings that we read from databases.
-const MAX_STR_LENGTH = 64 * 1024;
-
-// Kernel-related types:
-const KERNEL = {};
-KERNEL.FILETIME = new ctypes.StructType("FILETIME", [
-  {dwLowDateTime: ctypes.uint32_t},
-  {dwHighDateTime: ctypes.uint32_t}
-]);
-KERNEL.SYSTEMTIME = new ctypes.StructType("SYSTEMTIME", [
-  {wYear: ctypes.uint16_t},
-  {wMonth: ctypes.uint16_t},
-  {wDayOfWeek: ctypes.uint16_t},
-  {wDay: ctypes.uint16_t},
-  {wHour: ctypes.uint16_t},
-  {wMinute: ctypes.uint16_t},
-  {wSecond: ctypes.uint16_t},
-  {wMilliseconds: ctypes.uint16_t}
-]);
-
-// DB column types, cribbed from the ESE header
-var COLUMN_TYPES = {
-  JET_coltypBit:           1, /* True, False, or NULL */
-  JET_coltypUnsignedByte:  2, /* 1-byte integer, unsigned */
-  JET_coltypShort:         3, /* 2-byte integer, signed */
-  JET_coltypLong:          4, /* 4-byte integer, signed */
-  JET_coltypCurrency:      5, /* 8 byte integer, signed */
-  JET_coltypIEEESingle:    6, /* 4-byte IEEE single precision */
-  JET_coltypIEEEDouble:    7, /* 8-byte IEEE double precision */
-  JET_coltypDateTime:      8, /* Integral date, fractional time */
-  JET_coltypBinary:        9, /* Binary data, < 255 bytes */
-  JET_coltypText:         10, /* ANSI text, case insensitive, < 255 bytes */
-  JET_coltypLongBinary:   11, /* Binary data, long value */
-  JET_coltypLongText:     12, /* ANSI text, long value */
-
-  JET_coltypUnsignedLong: 14, /* 4-byte unsigned integer */
-  JET_coltypLongLong:     15, /* 8-byte signed integer */
-  JET_coltypGUID:         16, /* 16-byte globally unique identifier */
-};
-
-// Not very efficient, but only used for error messages
-function getColTypeName(numericValue) {
-  return Object.keys(COLUMN_TYPES).find(t => COLUMN_TYPES[t] == numericValue) || "unknown";
-}
-
-// All type constants and method wrappers go on this object:
-const ESE = {};
-ESE.JET_ERR = ctypes.long;
-ESE.JET_PCWSTR = ctypes.char16_t.ptr;
-// The ESE header calls this JET_API_PTR, but because it isn't ever used as a
-// pointer and because OS.File code implies that the name you give a type
-// matters, I opted for a different name.
-// Note that this is defined differently on 32 vs. 64-bit in the header.
-ESE.JET_API_ITEM = ctypes.voidptr_t.size == 4 ? ctypes.unsigned_long : ctypes.uint64_t;
-ESE.JET_INSTANCE = ESE.JET_API_ITEM;
-ESE.JET_SESID = ESE.JET_API_ITEM;
-ESE.JET_TABLEID = ESE.JET_API_ITEM;
-ESE.JET_COLUMNID = ctypes.unsigned_long;
-ESE.JET_GRBIT = ctypes.unsigned_long;
-ESE.JET_COLTYP = ctypes.unsigned_long;
-ESE.JET_DBID = ctypes.unsigned_long;
-
-ESE.JET_COLUMNDEF = new ctypes.StructType("JET_COLUMNDEF", [
-  {"cbStruct": ctypes.unsigned_long},
-  {"columnid": ESE.JET_COLUMNID	},
-  {"coltyp": ESE.JET_COLTYP },
-  {"wCountry": ctypes.unsigned_short }, // sepcifies the country/region for the column definition
-  {"langid": ctypes.unsigned_short },
-  {"cp": ctypes.unsigned_short },
-  {"wCollate": ctypes.unsigned_short }, /* Must be 0 */
-  {"cbMax": ctypes.unsigned_long },
-  {"grbit": ESE.JET_GRBIT }
-]);
-
-// Track open databases
-let gOpenDBs = new Map();
-
-// Track open libraries
-let gLibs = {};
-this.ESE = ESE; // Required for tests.
-this.KERNEL = KERNEL; // ditto
-this.gLibs = gLibs; // ditto
-
-function convertESEError(errorCode) {
-  switch (errorCode) {
-    case -1213 /* JET_errPageSizeMismatch */:
-    case -1002 /* JET_errInvalidName*/:
-    case -1507 /* JET_errColumnNotFound */:
-      // The DB format has changed and we haven't updated this migration code:
-      return "The database format has changed, error code: " + errorCode;
-    case -1032 /* JET_errFileAccessDenied */:
-    case -1207 /* JET_errDatabaseLocked */:
-    case -1302 /* JET_errTableLocked */:
-      return "The database or table is locked, error code: " + errorCode;
-    case -1809 /* JET_errPermissionDenied*/:
-    case -1907 /* JET_errAccessDenied */:
-      return "Access or permission denied, error code: " + errorCode;
-    case -1044 /* JET_errInvalidFilename */:
-      return "Invalid file name";
-    case -1811 /* JET_errFileNotFound */:
-      return "File not found";
-    case -550 /* JET_errDatabaseDirtyShutdown */:
-      return "Database in dirty shutdown state (without the requisite logs?)";
-    case -514 /* JET_errBadLogVersion */:
-      return "Database log version does not match the version of ESE in use.";
-    default:
-      return "Unknown error: " + errorCode;
-  }
-}
-
-function handleESEError(method, methodName, shouldThrow = true, errorLog = true) {
-  return function() {
-    let rv;
-    try {
-      rv = method.apply(null, arguments);
-    } catch (ex) {
-      log.error("Error calling into ctypes method", methodName, ex);
-      throw ex;
-    }
-    let resultCode = parseInt(rv.toString(10), 10);
-    if (resultCode < 0) {
-      if (errorLog) {
-        log.error("Got error " + resultCode + " calling " + methodName);
-      }
-      if (shouldThrow) {
-        throw new Error(convertESEError(rv));
-      }
-    } else if (resultCode > 0 && errorLog) {
-      log.warn("Got warning " + resultCode + " calling " + methodName);
-    }
-    return resultCode;
-  };
-}
-
-
-function declareESEFunction(methodName, ...args) {
-  let declaration = ["Jet" + methodName, ctypes.winapi_abi, ESE.JET_ERR].concat(args);
-  let ctypeMethod = gLibs.ese.declare.apply(gLibs.ese, declaration);
-  ESE[methodName] = handleESEError(ctypeMethod, methodName);
-  ESE["FailSafe" + methodName] = handleESEError(ctypeMethod, methodName, false);
-  ESE["Manual" + methodName] = handleESEError(ctypeMethod, methodName, false, false);
-}
-
-function declareESEFunctions() {
-  declareESEFunction("GetDatabaseFileInfoW", ESE.JET_PCWSTR, ctypes.voidptr_t,
-                     ctypes.unsigned_long, ctypes.unsigned_long);
-
-  declareESEFunction("GetSystemParameterW", ESE.JET_INSTANCE, ESE.JET_SESID,
-                     ctypes.unsigned_long, ESE.JET_API_ITEM.ptr,
-                     ESE.JET_PCWSTR, ctypes.unsigned_long);
-  declareESEFunction("SetSystemParameterW", ESE.JET_INSTANCE.ptr,
-                     ESE.JET_SESID, ctypes.unsigned_long, ESE.JET_API_ITEM,
-                     ESE.JET_PCWSTR);
-  declareESEFunction("CreateInstanceW", ESE.JET_INSTANCE.ptr, ESE.JET_PCWSTR);
-  declareESEFunction("Init", ESE.JET_INSTANCE.ptr);
-
-  declareESEFunction("BeginSessionW", ESE.JET_INSTANCE, ESE.JET_SESID.ptr,
-                     ESE.JET_PCWSTR, ESE.JET_PCWSTR);
-  declareESEFunction("AttachDatabaseW", ESE.JET_SESID, ESE.JET_PCWSTR,
-                     ESE.JET_GRBIT);
-  declareESEFunction("DetachDatabaseW", ESE.JET_SESID, ESE.JET_PCWSTR);
-  declareESEFunction("OpenDatabaseW", ESE.JET_SESID, ESE.JET_PCWSTR,
-                     ESE.JET_PCWSTR, ESE.JET_DBID.ptr, ESE.JET_GRBIT);
-  declareESEFunction("OpenTableW", ESE.JET_SESID, ESE.JET_DBID, ESE.JET_PCWSTR,
-                     ctypes.voidptr_t, ctypes.unsigned_long, ESE.JET_GRBIT,
-                     ESE.JET_TABLEID.ptr);
-
-  declareESEFunction("GetColumnInfoW", ESE.JET_SESID, ESE.JET_DBID,
-                     ESE.JET_PCWSTR, ESE.JET_PCWSTR, ctypes.voidptr_t,
-                     ctypes.unsigned_long, ctypes.unsigned_long);
-
-  declareESEFunction("Move", ESE.JET_SESID, ESE.JET_TABLEID, ctypes.long,
-                     ESE.JET_GRBIT);
-
-  declareESEFunction("RetrieveColumn", ESE.JET_SESID, ESE.JET_TABLEID,
-                     ESE.JET_COLUMNID, ctypes.voidptr_t, ctypes.unsigned_long,
-                     ctypes.unsigned_long.ptr, ESE.JET_GRBIT, ctypes.voidptr_t);
-
-  declareESEFunction("CloseTable", ESE.JET_SESID, ESE.JET_TABLEID);
-  declareESEFunction("CloseDatabase", ESE.JET_SESID, ESE.JET_DBID,
-                     ESE.JET_GRBIT);
-
-  declareESEFunction("EndSession", ESE.JET_SESID, ESE.JET_GRBIT);
-
-  declareESEFunction("Term", ESE.JET_INSTANCE);
-}
-
-function unloadLibraries() {
-  log.debug("Unloading");
-  if (gOpenDBs.size) {
-    log.error("Shouldn't unload libraries before DBs are closed!");
-    for (let db of gOpenDBs.values()) {
-      db._close();
-    }
-  }
-  for (let k of Object.keys(ESE)) {
-    delete ESE[k];
-  }
-  gLibs.ese.close();
-  gLibs.kernel.close();
-  delete gLibs.ese;
-  delete gLibs.kernel;
-}
-
-function loadLibraries() {
-  Services.obs.addObserver(unloadLibraries, "xpcom-shutdown", false);
-  gLibs.ese = ctypes.open("esent.dll");
-  gLibs.kernel = ctypes.open("kernel32.dll");
-  KERNEL.FileTimeToSystemTime = gLibs.kernel.declare("FileTimeToSystemTime",
-    ctypes.default_abi, ctypes.int, KERNEL.FILETIME.ptr, KERNEL.SYSTEMTIME.ptr);
-
-  declareESEFunctions();
-}
-
-function ESEDB(rootPath, dbPath, logPath) {
-  log.info("Created db");
-  this.rootPath = rootPath;
-  this.dbPath = dbPath;
-  this.logPath = logPath;
-  this._references = 0;
-  this._init();
-}
-
-ESEDB.prototype = {
-  rootPath: null,
-  dbPath: null,
-  logPath: null,
-  _opened: false,
-  _attached: false,
-  _sessionCreated: false,
-  _instanceCreated: false,
-  _dbId: null,
-  _sessionId: null,
-  _instanceId: null,
-
-  _init() {
-    if (!gLibs.ese) {
-      loadLibraries();
-    }
-    this.incrementReferenceCounter();
-    this._internalOpen();
-  },
-
-  _internalOpen() {
-    try {
-      let dbinfo = new ctypes.unsigned_long();
-      ESE.GetDatabaseFileInfoW(this.dbPath, dbinfo.address(),
-                               ctypes.unsigned_long.size, 17);
-
-      let pageSize = ctypes.UInt64.lo(dbinfo.value);
-      ESE.SetSystemParameterW(null, 0, 64 /* JET_paramDatabasePageSize*/,
-                              pageSize, null);
-
-      this._instanceId = new ESE.JET_INSTANCE();
-      ESE.CreateInstanceW(this._instanceId.address(),
-                          "firefox-dbreader-" + (gESEInstanceCounter++));
-      this._instanceCreated = true;
-
-      ESE.SetSystemParameterW(this._instanceId.address(), 0,
-                              0 /* JET_paramSystemPath*/, 0, this.rootPath);
-      ESE.SetSystemParameterW(this._instanceId.address(), 0,
-                              1 /* JET_paramTempPath */, 0, this.rootPath);
-      ESE.SetSystemParameterW(this._instanceId.address(), 0,
-                              2 /* JET_paramLogFilePath*/, 0, this.logPath);
-
-      // Shouldn't try to call JetTerm if the following call fails.
-      this._instanceCreated = false;
-      ESE.Init(this._instanceId.address());
-      this._instanceCreated = true;
-      this._sessionId = new ESE.JET_SESID();
-      ESE.BeginSessionW(this._instanceId, this._sessionId.address(), null,
-                        null);
-      this._sessionCreated = true;
-
-      const JET_bitDbReadOnly = 1;
-      ESE.AttachDatabaseW(this._sessionId, this.dbPath, JET_bitDbReadOnly);
-      this._attached = true;
-      this._dbId = new ESE.JET_DBID();
-      ESE.OpenDatabaseW(this._sessionId, this.dbPath, null,
-                        this._dbId.address(), JET_bitDbReadOnly);
-      this._opened = true;
-    } catch (ex) {
-      try {
-        this._close();
-      } catch (innerException) {
-        Cu.reportError(innerException);
-      }
-      // Make sure caller knows we failed.
-      throw ex;
-    }
-    gOpenDBs.set(this.dbPath, this);
-  },
-
-  checkForColumn(tableName, columnName) {
-    if (!this._opened) {
-      throw new Error("The database was closed!");
-    }
-
-    let columnInfo;
-    try {
-      columnInfo = this._getColumnInfo(tableName, [{name: columnName}]);
-    } catch (ex) {
-      return null;
-    }
-    return columnInfo[0];
-  },
-
-  tableExists(tableName) {
-    if (!this._opened) {
-      throw new Error("The database was closed!");
-    }
-
-    let tableId = new ESE.JET_TABLEID();
-    let rv = ESE.ManualOpenTableW(this._sessionId, this._dbId, tableName, null,
-                                  0, 4 /* JET_bitTableReadOnly */,
-                                  tableId.address());
-    if (rv == -1305 /* JET_errObjectNotFound */) {
-      return false;
-    }
-    if (rv < 0) {
-      log.error("Got error " + rv + " calling OpenTableW");
-      throw new Error(convertESEError(rv));
-    }
-
-    if (rv > 0) {
-      log.error("Got warning " + rv + " calling OpenTableW");
-    }
-    ESE.FailSafeCloseTable(this._sessionId, tableId);
-    return true;
-  },
-
-  *tableItems(tableName, columns) {
-    if (!this._opened) {
-      throw new Error("The database was closed!");
-    }
-
-    let tableOpened = false;
-    let tableId;
-    try {
-      tableId = this._openTable(tableName);
-      tableOpened = true;
-
-      let columnInfo = this._getColumnInfo(tableName, columns);
-
-      let rv = ESE.ManualMove(this._sessionId, tableId,
-                              -2147483648 /* JET_MoveFirst */, 0);
-      if (rv == -1603 /* JET_errNoCurrentRecord */) {
-        // There are no rows in the table.
-        this._closeTable(tableId);
-        return;
-      }
-      if (rv != 0) {
-        throw new Error(convertESEError(rv));
-      }
-
-      do {
-        let rowContents = {};
-        for (let column of columnInfo) {
-          let [buffer, bufferSize] = this._getBufferForColumn(column);
-          // We handle errors manually so we accurately deal with NULL values.
-          let err = ESE.ManualRetrieveColumn(this._sessionId, tableId,
-                                             column.id, buffer.address(),
-                                             bufferSize, null, 0, null);
-          rowContents[column.name] = this._convertResult(column, buffer, err);
-        }
-        yield rowContents;
-      } while (ESE.ManualMove(this._sessionId, tableId, 1 /* JET_MoveNext */, 0) === 0);
-    } catch (ex) {
-      if (tableOpened) {
-        this._closeTable(tableId);
-      }
-      throw ex;
-    }
-    this._closeTable(tableId);
-  },
-
-  _openTable(tableName) {
-    let tableId = new ESE.JET_TABLEID();
-    ESE.OpenTableW(this._sessionId, this._dbId, tableName, null,
-                   0, 4 /* JET_bitTableReadOnly */, tableId.address());
-    return tableId;
-  },
-
-  _getBufferForColumn(column) {
-    let buffer;
-    if (column.type == "string") {
-      let wchar_tArray = ctypes.ArrayType(ctypes.char16_t);
-      // size on the column is in bytes, 2 bytes to a wchar, so:
-      let charCount = column.dbSize >> 1;
-      buffer = new wchar_tArray(charCount);
-    } else if (column.type == "boolean") {
-      buffer = new ctypes.uint8_t();
-    } else if (column.type == "date") {
-      buffer = new KERNEL.FILETIME();
-    } else if (column.type == "guid") {
-      let byteArray = ctypes.ArrayType(ctypes.uint8_t);
-      buffer = new byteArray(column.dbSize);
-    } else {
-      throw new Error("Unknown type " + column.type);
-    }
-    return [buffer, buffer.constructor.size];
-  },
-
-  _convertResult(column, buffer, err) {
-    if (err != 0) {
-      if (err == 1004) {
-        // Deal with null values:
-        buffer = null;
-      } else {
-        Cu.reportError("Unexpected JET error: " + err + ";" + " retrieving value for column " + column.name);
-        throw new Error(convertESEError(err));
-      }
-    }
-    if (column.type == "string") {
-      return buffer ? buffer.readString() : "";
-    }
-    if (column.type == "boolean") {
-      return buffer ? (buffer.value == 255) : false;
-    }
-    if (column.type == "guid") {
-      if (buffer.length != 16) {
-        Cu.reportError("Buffer size for guid field " + column.id + " should have been 16!");
-        return "";
-      }
-      let rv = "{";
-      for (let i = 0; i < 16; i++) {
-        if (i == 4 || i == 6 || i == 8 || i == 10) {
-          rv += "-";
-        }
-        let byteValue = buffer.addressOfElement(i).contents;
-        // Ensure there's a leading 0
-        rv += ("0" + byteValue.toString(16)).substr(-2);
-      }
-      return rv + "}";
-    }
-    if (column.type == "date") {
-      if (!buffer) {
-        return null;
-      }
-      let systemTime = new KERNEL.SYSTEMTIME();
-      let result = KERNEL.FileTimeToSystemTime(buffer.address(), systemTime.address());
-      if (result == 0) {
-        throw new Error(ctypes.winLastError);
-      }
-
-      // System time is in UTC, so we use Date.UTC to get milliseconds from epoch,
-      // then divide by 1000 to get seconds, and round down:
-      return new Date(Date.UTC(systemTime.wYear,
-                                 systemTime.wMonth - 1,
-                                 systemTime.wDay,
-                                 systemTime.wHour,
-                                 systemTime.wMinute,
-                                 systemTime.wSecond,
-                                 systemTime.wMilliseconds));
-    }
-    return undefined;
-  },
-
-  _getColumnInfo(tableName, columns) {
-    let rv = [];
-    for (let column of columns) {
-      let columnInfoFromDB = new ESE.JET_COLUMNDEF();
-      ESE.GetColumnInfoW(this._sessionId, this._dbId, tableName, column.name,
-                         columnInfoFromDB.address(), ESE.JET_COLUMNDEF.size, 0 /* JET_ColInfo */);
-      let dbType = parseInt(columnInfoFromDB.coltyp.toString(10), 10);
-      let dbSize = parseInt(columnInfoFromDB.cbMax.toString(10), 10);
-      if (column.type == "string") {
-        if (dbType != COLUMN_TYPES.JET_coltypLongText &&
-            dbType != COLUMN_TYPES.JET_coltypText) {
-          throw new Error("Invalid column type for column " + column.name +
-                          "; expected text type, got type " + getColTypeName(dbType));
-        }
-        if (dbSize > MAX_STR_LENGTH) {
-          throw new Error("Column " + column.name + " has more than 64k data in it. This API is not designed to handle data that large.");
-        }
-      } else if (column.type == "boolean") {
-        if (dbType != COLUMN_TYPES.JET_coltypBit) {
-          throw new Error("Invalid column type for column " + column.name +
-                          "; expected bit type, got type " + getColTypeName(dbType));
-        }
-      } else if (column.type == "date") {
-        if (dbType != COLUMN_TYPES.JET_coltypLongLong) {
-          throw new Error("Invalid column type for column " + column.name +
-                          "; expected long long type, got type " + getColTypeName(dbType));
-        }
-      } else if (column.type == "guid") {
-        if (dbType != COLUMN_TYPES.JET_coltypGUID) {
-          throw new Error("Invalid column type for column " + column.name +
-                          "; expected guid type, got type " + getColTypeName(dbType));
-        }
-      } else if (column.type) {
-        throw new Error("Unknown column type " + column.type + " requested for column " +
-                        column.name + ", don't know what to do.");
-      }
-
-      rv.push({name: column.name, id: columnInfoFromDB.columnid, type: column.type, dbSize, dbType});
-    }
-    return rv;
-  },
-
-  _closeTable(tableId) {
-    ESE.FailSafeCloseTable(this._sessionId, tableId);
-  },
-
-  _close() {
-    this._internalClose();
-    gOpenDBs.delete(this.dbPath);
-  },
-
-  _internalClose() {
-    if (this._opened) {
-      log.debug("close db");
-      ESE.FailSafeCloseDatabase(this._sessionId, this._dbId, 0);
-      log.debug("finished close db");
-      this._opened = false;
-    }
-    if (this._attached) {
-      log.debug("detach db");
-      ESE.FailSafeDetachDatabaseW(this._sessionId, this.dbPath);
-      this._attached = false;
-    }
-    if (this._sessionCreated) {
-      log.debug("end session");
-      ESE.FailSafeEndSession(this._sessionId, 0);
-      this._sessionCreated = false;
-    }
-    if (this._instanceCreated) {
-      log.debug("term");
-      ESE.FailSafeTerm(this._instanceId);
-      this._instanceCreated = false;
-    }
-  },
-
-  incrementReferenceCounter() {
-    this._references++;
-  },
-
-  decrementReferenceCounter() {
-    this._references--;
-    if (this._references <= 0) {
-      this._close();
-    }
-  },
-};
-
-let ESEDBReader = {
-  openDB(rootDir, dbFile, logDir) {
-    let dbFilePath = dbFile.path;
-    if (gOpenDBs.has(dbFilePath)) {
-      let db = gOpenDBs.get(dbFilePath);
-      db.incrementReferenceCounter();
-      return db;
-    }
-    // ESE is really picky about the trailing slashes according to the docs,
-    // so we do as we're told and ensure those are there:
-    return new ESEDB(rootDir.path + "\\", dbFilePath, logDir.path + "\\");
-  },
-
-  async dbLocked(dbFile) {
-    let options = {winShare: OS.Constants.Win.FILE_SHARE_READ};
-    let locked = true;
-    await OS.File.open(dbFile.path, {read: true}, options).then(fileHandle => {
-      locked = false;
-      // Return the close promise so we wait for the file to be closed again.
-      // Otherwise the file might still be kept open by this handle by the time
-      // that we try to use the ESE APIs to access it.
-      return fileHandle.close();
-    }, () => {
-      Cu.reportError("ESE DB at " + dbFile.path + " is locked.");
-    });
-    return locked;
-  },
-
-  closeDB(db) {
-    db.decrementReferenceCounter();
-  },
-
-  COLUMN_TYPES,
-};
-