diff --git a/java/src/com/android/inputmethod/dictionarypack/ActionBatch.java b/java/src/com/android/inputmethod/dictionarypack/ActionBatch.java index 706bdea8e..3f69cedee 100644 --- a/java/src/com/android/inputmethod/dictionarypack/ActionBatch.java +++ b/java/src/com/android/inputmethod/dictionarypack/ActionBatch.java @@ -325,8 +325,9 @@ public final class ActionBatch { MetadataDbHelper.TYPE_BULK, MetadataDbHelper.STATUS_AVAILABLE, mWordList.mId, mWordList.mLocale, mWordList.mDescription, null == mWordList.mLocalFilename ? "" : mWordList.mLocalFilename, - mWordList.mRemoteFilename, mWordList.mLastUpdate, mWordList.mChecksum, - mWordList.mFileSize, mWordList.mVersion, mWordList.mFormatVersion); + mWordList.mRemoteFilename, mWordList.mLastUpdate, mWordList.mRawChecksum, + mWordList.mChecksum, mWordList.mFileSize, mWordList.mVersion, + mWordList.mFormatVersion); PrivateLog.log("Insert 'available' record for " + mWordList.mDescription + " and locale " + mWordList.mLocale); db.insert(MetadataDbHelper.METADATA_TABLE_NAME, null, values); @@ -374,7 +375,7 @@ public final class ActionBatch { final ContentValues values = MetadataDbHelper.makeContentValues(0, MetadataDbHelper.TYPE_BULK, MetadataDbHelper.STATUS_INSTALLED, mWordList.mId, mWordList.mLocale, mWordList.mDescription, - "", mWordList.mRemoteFilename, mWordList.mLastUpdate, + "", mWordList.mRemoteFilename, mWordList.mLastUpdate, mWordList.mRawChecksum, mWordList.mChecksum, mWordList.mFileSize, mWordList.mVersion, mWordList.mFormatVersion); PrivateLog.log("Insert 'preinstalled' record for " + mWordList.mDescription @@ -416,8 +417,9 @@ public final class ActionBatch { oldValues.getAsInteger(MetadataDbHelper.STATUS_COLUMN), mWordList.mId, mWordList.mLocale, mWordList.mDescription, oldValues.getAsString(MetadataDbHelper.LOCAL_FILENAME_COLUMN), - mWordList.mRemoteFilename, mWordList.mLastUpdate, mWordList.mChecksum, - mWordList.mFileSize, mWordList.mVersion, mWordList.mFormatVersion); + mWordList.mRemoteFilename, mWordList.mLastUpdate, mWordList.mRawChecksum, + mWordList.mChecksum, mWordList.mFileSize, mWordList.mVersion, + mWordList.mFormatVersion); PrivateLog.log("Updating record for " + mWordList.mDescription + " and locale " + mWordList.mLocale); db.update(MetadataDbHelper.METADATA_TABLE_NAME, values, diff --git a/java/src/com/android/inputmethod/dictionarypack/MetadataDbHelper.java b/java/src/com/android/inputmethod/dictionarypack/MetadataDbHelper.java index 4a8fa51ee..668eb925b 100644 --- a/java/src/com/android/inputmethod/dictionarypack/MetadataDbHelper.java +++ b/java/src/com/android/inputmethod/dictionarypack/MetadataDbHelper.java @@ -20,6 +20,7 @@ import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; +import android.database.sqlite.SQLiteException; import android.database.sqlite.SQLiteOpenHelper; import android.text.TextUtils; import android.util.Log; @@ -46,7 +47,7 @@ public class MetadataDbHelper extends SQLiteOpenHelper { // used to identify the versions for upgrades. This should never change going forward. private static final int METADATA_DATABASE_VERSION_WITH_CLIENTID = 6; // The current database version. - private static final int CURRENT_METADATA_DATABASE_VERSION = 7; + private static final int CURRENT_METADATA_DATABASE_VERSION = 8; private final static long NOT_A_DOWNLOAD_ID = -1; @@ -66,7 +67,8 @@ public class MetadataDbHelper extends SQLiteOpenHelper { public static final String VERSION_COLUMN = "version"; public static final String FORMATVERSION_COLUMN = "formatversion"; public static final String FLAGS_COLUMN = "flags"; - public static final int COLUMN_COUNT = 13; + public static final String RAW_CHECKSUM_COLUMN = "rawChecksum"; + public static final int COLUMN_COUNT = 14; private static final String CLIENT_CLIENT_ID_COLUMN = "clientid"; private static final String CLIENT_METADATA_URI_COLUMN = "uri"; @@ -119,8 +121,9 @@ public class MetadataDbHelper extends SQLiteOpenHelper { + CHECKSUM_COLUMN + " TEXT, " + FILESIZE_COLUMN + " INTEGER, " + VERSION_COLUMN + " INTEGER," - + FORMATVERSION_COLUMN + " INTEGER," - + FLAGS_COLUMN + " INTEGER," + + FORMATVERSION_COLUMN + " INTEGER, " + + FLAGS_COLUMN + " INTEGER, " + + RAW_CHECKSUM_COLUMN + " TEXT," + "PRIMARY KEY (" + WORDLISTID_COLUMN + "," + VERSION_COLUMN + "));"; private static final String METADATA_CREATE_CLIENT_TABLE = "CREATE TABLE IF NOT EXISTS " + CLIENT_TABLE_NAME + " (" @@ -136,7 +139,8 @@ public class MetadataDbHelper extends SQLiteOpenHelper { static final String[] METADATA_TABLE_COLUMNS = { PENDINGID_COLUMN, TYPE_COLUMN, STATUS_COLUMN, WORDLISTID_COLUMN, LOCALE_COLUMN, DESCRIPTION_COLUMN, LOCAL_FILENAME_COLUMN, REMOTE_FILENAME_COLUMN, DATE_COLUMN, CHECKSUM_COLUMN, - FILESIZE_COLUMN, VERSION_COLUMN, FORMATVERSION_COLUMN, FLAGS_COLUMN }; + FILESIZE_COLUMN, VERSION_COLUMN, FORMATVERSION_COLUMN, FLAGS_COLUMN, + RAW_CHECKSUM_COLUMN }; // List of all client table columns. static final String[] CLIENT_TABLE_COLUMNS = { CLIENT_CLIENT_ID_COLUMN, CLIENT_METADATA_URI_COLUMN, CLIENT_PENDINGID_COLUMN, FLAGS_COLUMN }; @@ -215,6 +219,17 @@ public class MetadataDbHelper extends SQLiteOpenHelper { createClientTable(db); } + private void addRawChecksumColumnUnlessPresent(final SQLiteDatabase db, final String clientId) { + try { + db.execSQL("SELECT " + RAW_CHECKSUM_COLUMN + " FROM " + + METADATA_TABLE_NAME + " LIMIT 0;"); + } catch (SQLiteException e) { + Log.i(TAG, "No " + RAW_CHECKSUM_COLUMN + " column : creating it"); + db.execSQL("ALTER TABLE " + METADATA_TABLE_NAME + " ADD COLUMN " + + RAW_CHECKSUM_COLUMN + " TEXT;"); + } + } + /** * Upgrade the database. Upgrade from version 3 is supported. * Version 3 has a DB named METADATA_DATABASE_NAME_STEM containing a table METADATA_TABLE_NAME. @@ -260,6 +275,12 @@ public class MetadataDbHelper extends SQLiteOpenHelper { db.execSQL("DROP TABLE IF EXISTS " + CLIENT_TABLE_NAME); onCreate(db); } + // A rawChecksum column that did not exist in the previous versions was added that + // corresponds to the md5 checksum of the file after decompression/decryption. This is to + // strengthen the system against corrupted dictionary files. + // The most secure way to upgrade a database is to just test for the column presence, and + // add it if it's not there. + addRawChecksumColumnUnlessPresent(db, mClientId); } /** @@ -431,7 +452,7 @@ public class MetadataDbHelper extends SQLiteOpenHelper { public static ContentValues makeContentValues(final int pendingId, final int type, final int status, final String wordlistId, final String locale, final String description, final String filename, final String url, final long date, - final String checksum, final long filesize, final int version, + final String rawChecksum, final String checksum, final long filesize, final int version, final int formatVersion) { final ContentValues result = new ContentValues(COLUMN_COUNT); result.put(PENDINGID_COLUMN, pendingId); @@ -443,6 +464,7 @@ public class MetadataDbHelper extends SQLiteOpenHelper { result.put(LOCAL_FILENAME_COLUMN, filename); result.put(REMOTE_FILENAME_COLUMN, url); result.put(DATE_COLUMN, date); + result.put(RAW_CHECKSUM_COLUMN, rawChecksum); result.put(CHECKSUM_COLUMN, checksum); result.put(FILESIZE_COLUMN, filesize); result.put(VERSION_COLUMN, version); @@ -478,6 +500,8 @@ public class MetadataDbHelper extends SQLiteOpenHelper { if (null == result.get(REMOTE_FILENAME_COLUMN)) result.put(REMOTE_FILENAME_COLUMN, ""); // 0 for the update date : 1970/1/1. Unless specified. if (null == result.get(DATE_COLUMN)) result.put(DATE_COLUMN, 0); + // Raw checksum unknown unless specified + if (null == result.get(RAW_CHECKSUM_COLUMN)) result.put(RAW_CHECKSUM_COLUMN, ""); // Checksum unknown unless specified if (null == result.get(CHECKSUM_COLUMN)) result.put(CHECKSUM_COLUMN, ""); // No filesize unless specified @@ -525,6 +549,7 @@ public class MetadataDbHelper extends SQLiteOpenHelper { putStringResult(result, cursor, LOCAL_FILENAME_COLUMN); putStringResult(result, cursor, REMOTE_FILENAME_COLUMN); putIntResult(result, cursor, DATE_COLUMN); + putStringResult(result, cursor, RAW_CHECKSUM_COLUMN); putStringResult(result, cursor, CHECKSUM_COLUMN); putIntResult(result, cursor, FILESIZE_COLUMN); putIntResult(result, cursor, VERSION_COLUMN); diff --git a/java/src/com/android/inputmethod/dictionarypack/MetadataHandler.java b/java/src/com/android/inputmethod/dictionarypack/MetadataHandler.java index 5c2289911..63e419871 100644 --- a/java/src/com/android/inputmethod/dictionarypack/MetadataHandler.java +++ b/java/src/com/android/inputmethod/dictionarypack/MetadataHandler.java @@ -52,6 +52,8 @@ public class MetadataHandler { final int idIndex = results.getColumnIndex(MetadataDbHelper.WORDLISTID_COLUMN); final int updateIndex = results.getColumnIndex(MetadataDbHelper.DATE_COLUMN); final int fileSizeIndex = results.getColumnIndex(MetadataDbHelper.FILESIZE_COLUMN); + final int rawChecksumIndex = + results.getColumnIndex(MetadataDbHelper.RAW_CHECKSUM_COLUMN); final int checksumIndex = results.getColumnIndex(MetadataDbHelper.CHECKSUM_COLUMN); final int localFilenameIndex = results.getColumnIndex(MetadataDbHelper.LOCAL_FILENAME_COLUMN); @@ -66,6 +68,7 @@ public class MetadataHandler { results.getString(descriptionColumn), results.getLong(updateIndex), results.getLong(fileSizeIndex), + results.getString(rawChecksumIndex), results.getString(checksumIndex), results.getString(localFilenameIndex), results.getString(remoteFilenameIndex), diff --git a/java/src/com/android/inputmethod/dictionarypack/MetadataParser.java b/java/src/com/android/inputmethod/dictionarypack/MetadataParser.java index 27670fddf..a88173e8e 100644 --- a/java/src/com/android/inputmethod/dictionarypack/MetadataParser.java +++ b/java/src/com/android/inputmethod/dictionarypack/MetadataParser.java @@ -37,6 +37,7 @@ public class MetadataParser { private static final String DESCRIPTION_FIELD_NAME = MetadataDbHelper.DESCRIPTION_COLUMN; private static final String UPDATE_FIELD_NAME = "update"; private static final String FILESIZE_FIELD_NAME = MetadataDbHelper.FILESIZE_COLUMN; + private static final String RAW_CHECKSUM_FIELD_NAME = MetadataDbHelper.RAW_CHECKSUM_COLUMN; private static final String CHECKSUM_FIELD_NAME = MetadataDbHelper.CHECKSUM_COLUMN; private static final String REMOTE_FILENAME_FIELD_NAME = MetadataDbHelper.REMOTE_FILENAME_COLUMN; @@ -80,6 +81,7 @@ public class MetadataParser { arguments.get(DESCRIPTION_FIELD_NAME), Long.parseLong(arguments.get(UPDATE_FIELD_NAME)), Long.parseLong(arguments.get(FILESIZE_FIELD_NAME)), + arguments.get(RAW_CHECKSUM_FIELD_NAME), arguments.get(CHECKSUM_FIELD_NAME), null, arguments.get(REMOTE_FILENAME_FIELD_NAME), diff --git a/java/src/com/android/inputmethod/dictionarypack/WordListMetadata.java b/java/src/com/android/inputmethod/dictionarypack/WordListMetadata.java index 69bff9597..9e510a68b 100644 --- a/java/src/com/android/inputmethod/dictionarypack/WordListMetadata.java +++ b/java/src/com/android/inputmethod/dictionarypack/WordListMetadata.java @@ -30,6 +30,7 @@ public class WordListMetadata { public final String mDescription; public final long mLastUpdate; public final long mFileSize; + public final String mRawChecksum; public final String mChecksum; public final String mLocalFilename; public final String mRemoteFilename; @@ -50,13 +51,15 @@ public class WordListMetadata { public WordListMetadata(final String id, final int type, final String description, final long lastUpdate, final long fileSize, - final String checksum, final String localFilename, final String remoteFilename, - final int version, final int formatVersion, final int flags, final String locale) { + final String rawChecksum, final String checksum, final String localFilename, + final String remoteFilename, final int version, final int formatVersion, + final int flags, final String locale) { mId = id; mType = type; mDescription = description; mLastUpdate = lastUpdate; // In milliseconds mFileSize = fileSize; + mRawChecksum = rawChecksum; mChecksum = checksum; mLocalFilename = localFilename; mRemoteFilename = remoteFilename; @@ -77,6 +80,7 @@ public class WordListMetadata { final String description = values.getAsString(MetadataDbHelper.DESCRIPTION_COLUMN); final Long lastUpdate = values.getAsLong(MetadataDbHelper.DATE_COLUMN); final Long fileSize = values.getAsLong(MetadataDbHelper.FILESIZE_COLUMN); + final String rawChecksum = values.getAsString(MetadataDbHelper.RAW_CHECKSUM_COLUMN); final String checksum = values.getAsString(MetadataDbHelper.CHECKSUM_COLUMN); final String localFilename = values.getAsString(MetadataDbHelper.LOCAL_FILENAME_COLUMN); final String remoteFilename = values.getAsString(MetadataDbHelper.REMOTE_FILENAME_COLUMN); @@ -98,8 +102,8 @@ public class WordListMetadata { || null == locale) { throw new IllegalArgumentException(); } - return new WordListMetadata(id, type, description, lastUpdate, fileSize, checksum, - localFilename, remoteFilename, version, formatVersion, flags, locale); + return new WordListMetadata(id, type, description, lastUpdate, fileSize, rawChecksum, + checksum, localFilename, remoteFilename, version, formatVersion, flags, locale); } @Override @@ -110,6 +114,7 @@ public class WordListMetadata { sb.append("\nDescription : ").append(mDescription); sb.append("\nLastUpdate : ").append(mLastUpdate); sb.append("\nFileSize : ").append(mFileSize); + sb.append("\nRawChecksum : ").append(mRawChecksum); sb.append("\nChecksum : ").append(mChecksum); sb.append("\nLocalFilename : ").append(mLocalFilename); sb.append("\nRemoteFilename : ").append(mRemoteFilename);