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Code Issues Releases Wiki Activity

add mimetype and streamtype support in TemporaryStorageProvider

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This commit is contained in:
Vincent Breitmoser 2015-06-20 05:03:40 +02:00
parent d11b7b58f1
commit 3b791f6633
1 changed files with 52 additions and 4 deletions
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56
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/provider/TemporaryStorageProvider.java
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@ -18,14 +18,17 @@
package org.sufficientlysecure.keychain.provider;
import android.content.ClipDescription;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.content.res.AssetFileDescriptor;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.net.Uri;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.provider.OpenableColumns;
@ -45,12 +48,20 @@ public class TemporaryStorageProvider extends ContentProvider {
private static final String COLUMN_ID = "id";
private static final String COLUMN_NAME = "name";
private static final String COLUMN_TIME = "time";
private static final String COLUMN_TYPE = "mimetype";
public static final String CONTENT_AUTHORITY = Constants.TEMPSTORAGE_AUTHORITY;
private static final Uri BASE_URI = Uri.parse("content://" + CONTENT_AUTHORITY);
private static final int DB_VERSION = 2;
private static final int DB_VERSION = 3;
private static File cacheDir;
public static Uri createFile(Context context, String targetName, String mimeType) {
ContentValues contentValues = new ContentValues();
contentValues.put(COLUMN_NAME, targetName);
contentValues.put(COLUMN_TYPE, mimeType);
return context.getContentResolver().insert(BASE_URI, contentValues);
}
public static Uri createFile(Context context, String targetName) {
ContentValues contentValues = new ContentValues();
contentValues.put(COLUMN_NAME, targetName);
@ -78,6 +89,7 @@ public class TemporaryStorageProvider extends ContentProvider {
db.execSQL("CREATE TABLE IF NOT EXISTS " + TABLE_FILES + " (" +
COLUMN_ID + " TEXT PRIMARY KEY, " +
COLUMN_NAME + " TEXT, " +
COLUMN_TYPE + " TEXT, " +
COLUMN_TIME + " INTEGER" +
");");
}
@ -94,6 +106,8 @@ public class TemporaryStorageProvider extends ContentProvider {
COLUMN_NAME + " TEXT, " +
COLUMN_TIME + " INTEGER" +
");");
case 2:
db.execSQL("ALTER TABLE files ADD COLUMN " + COLUMN_TYPE + " TEXT");
}
}
}
@ -144,11 +158,32 @@ public class TemporaryStorageProvider extends ContentProvider {
@Override
public String getType(Uri uri) {
// Note: If we can find a files mime type, we can decrypt it to temp storage and open it after
// encryption. The mime type is needed, else UI really sucks and some apps break.
Cursor cursor = db.getReadableDatabase().query(TABLE_FILES,
new String[]{ COLUMN_TYPE }, COLUMN_ID + "=?",
new String[]{ uri.getLastPathSegment() }, null, null, null);
if (cursor != null) {
try {
if (cursor.moveToNext()) {
if (!cursor.isNull(0)) {
return cursor.getString(0);
}
}
} finally {
cursor.close();
}
}
return "*/*";
}
@Override
public String[] getStreamTypes(Uri uri, String mimeTypeFilter) {
String type = getType(uri);
if (ClipDescription.compareMimeTypes(type, mimeTypeFilter)) {
return new String[] { type };
}
return null;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
if (!values.containsKey(COLUMN_TIME)) {
@ -183,9 +218,22 @@ public class TemporaryStorageProvider extends ContentProvider {
return 0;
}
public int setMimeType(Uri uri, String mimetype) {
ContentValues values = new ContentValues();
values.put(COLUMN_TYPE, mimetype);
return update(uri, values, null, null);
}
@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
throw new UnsupportedOperationException("Update not supported");
if (values.size() != 1 || !values.containsKey(COLUMN_TYPE)) {
throw new UnsupportedOperationException("Update supported only for type field!");
}
if (selection != null || selectionArgs != null) {
throw new UnsupportedOperationException("Update supported only for plain uri!");
}
return db.getWritableDatabase().update(TABLE_FILES, values,
COLUMN_ID + " = ?", new String[]{ uri.getLastPathSegment() });
}
@Override