diff options
Diffstat (limited to 'java')
| -rw-r--r-- | java/src/com/android/inputmethod/dictionarypack/MD5Calculator.java | 2 | ||||
| -rw-r--r-- | java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java | 14 |
2 files changed, 13 insertions, 3 deletions
diff --git a/java/src/com/android/inputmethod/dictionarypack/MD5Calculator.java b/java/src/com/android/inputmethod/dictionarypack/MD5Calculator.java index e47e86e4b..ccd054c84 100644 --- a/java/src/com/android/inputmethod/dictionarypack/MD5Calculator.java +++ b/java/src/com/android/inputmethod/dictionarypack/MD5Calculator.java @@ -20,7 +20,7 @@ import java.io.InputStream; import java.io.IOException; import java.security.MessageDigest; -final class MD5Calculator { +public final class MD5Calculator { private MD5Calculator() {} // This helper class is not instantiable public static String checksum(final InputStream in) throws IOException { diff --git a/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java b/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java index 669ad09dd..72757e086 100644 --- a/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java +++ b/java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java @@ -28,6 +28,7 @@ import android.text.TextUtils; import android.util.Log; import com.android.inputmethod.dictionarypack.DictionaryPackConstants; +import com.android.inputmethod.dictionarypack.MD5Calculator; import com.android.inputmethod.latin.utils.CollectionUtils; import com.android.inputmethod.latin.utils.DictionaryInfoUtils; import com.android.inputmethod.latin.utils.DictionaryInfoUtils.DictionaryInfo; @@ -38,6 +39,7 @@ import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.Closeable; import java.io.File; +import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; @@ -218,7 +220,8 @@ public final class BinaryDictionaryFileDumper { * and creating it (and its containing directory) if necessary. */ private static void cacheWordList(final String wordlistId, final String locale, - final ContentProviderClient providerClient, final Context context) { + final String rawChecksum, final ContentProviderClient providerClient, + final Context context) { final int COMPRESSED_CRYPTED_COMPRESSED = 0; final int CRYPTED_COMPRESSED = 1; final int COMPRESSED_CRYPTED = 2; @@ -300,6 +303,13 @@ public final class BinaryDictionaryFileDumper { checkMagicAndCopyFileTo(bufferedInputStream, bufferedOutputStream); bufferedOutputStream.flush(); bufferedOutputStream.close(); + final String actualRawChecksum = MD5Calculator.checksum( + new BufferedInputStream(new FileInputStream(outputFile))); + Log.i(TAG, "Computed checksum for downloaded dictionary. Expected = " + rawChecksum + + " ; actual = " + actualRawChecksum); + if (!TextUtils.isEmpty(rawChecksum) && !rawChecksum.equals(actualRawChecksum)) { + throw new IOException("Could not decode the file correctly : checksum differs"); + } final File finalFile = new File(finalFileName); finalFile.delete(); if (!outputFile.renameTo(finalFile)) { @@ -409,7 +419,7 @@ public final class BinaryDictionaryFileDumper { final List<WordListInfo> idList = getWordListWordListInfos(locale, context, hasDefaultWordList); for (WordListInfo id : idList) { - cacheWordList(id.mId, id.mLocale, providerClient, context); + cacheWordList(id.mId, id.mLocale, id.mRawChecksum, providerClient, context); } } finally { providerClient.release(); |