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Don't copy column to sqlcipher db if it doesn't exist there

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Fixes #7386
This commit is contained in:
Moxie Marlinspike 2018-02-05 14:04:56 -08:00
parent 2b651ee323
commit 0bbe83f8f2
1 changed files with 23 additions and 5 deletions
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28
src/org/thoughtcrime/securesms/database/helpers/SQLCipherMigrationHelper.java
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@ -25,6 +25,8 @@ import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.whispersystems.libsignal.InvalidMessageException;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
public class SQLCipherMigrationHelper {
@ -180,6 +182,8 @@ public class SQLCipherMigrationHelper {
@NonNull net.sqlcipher.database.SQLiteDatabase modernDb,
@Nullable BiFunction<ContentValues, Pair<Integer, Integer>, ContentValues> transformer)
{
Set<String> destinationColumns = getTableColumns(tableName, modernDb);
try (Cursor cursor = legacyDb.query(tableName, null, null, null, null, null, null)) {
int count = (cursor != null) ? cursor.getCount() : 0;
int progress = 1;
@ -190,11 +194,13 @@ public class SQLCipherMigrationHelper {
for (int i=0;i<cursor.getColumnCount();i++) {
String columnName = cursor.getColumnName(i);
switch (cursor.getType(i)) {
case Cursor.FIELD_TYPE_STRING: row.put(columnName, cursor.getString(i)); break;
case Cursor.FIELD_TYPE_FLOAT: row.put(columnName, cursor.getFloat(i)); break;
case Cursor.FIELD_TYPE_INTEGER: row.put(columnName, cursor.getLong(i)); break;
case Cursor.FIELD_TYPE_BLOB: row.put(columnName, cursor.getBlob(i)); break;
if (destinationColumns.contains(columnName)) {
switch (cursor.getType(i)) {
case Cursor.FIELD_TYPE_STRING: row.put(columnName, cursor.getString(i)); break;
case Cursor.FIELD_TYPE_FLOAT: row.put(columnName, cursor.getFloat(i)); break;
case Cursor.FIELD_TYPE_INTEGER: row.put(columnName, cursor.getLong(i)); break;
case Cursor.FIELD_TYPE_BLOB: row.put(columnName, cursor.getBlob(i)); break;
}
}
}
@ -227,6 +233,18 @@ public class SQLCipherMigrationHelper {
return new Pair<>(type, body);
}
private static Set<String> getTableColumns(String tableName, net.sqlcipher.database.SQLiteDatabase database) {
Set<String> results = new HashSet<>();
try (Cursor cursor = database.rawQuery("PRAGMA table_info(" + tableName + ")", null)) {
while (cursor != null && cursor.moveToNext()) {
results.add(cursor.getString(1));
}
}
return results;
}
private static int getTotalProgress(int sectionOffset, int sectionProgress, int sectionTotal) {
double percentOfSectionComplete = ((double)sectionProgress) / ((double)sectionTotal);
return sectionOffset + (int)(((double)1000) * percentOfSectionComplete);