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Guard against OOB moves in media send flow.

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This commit is contained in:
Greyson Parrelli 2019-03-19 17:32:55 -07:00
parent 8a7cac7c03
commit 6e7fab40ac
1 changed files with 13 additions and 0 deletions
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13
src/org/thoughtcrime/securesms/mediasend/MediaSendViewModel.java
View File

@ -13,6 +13,7 @@ import android.text.TextUtils;
import com.annimon.stream.Stream;
import org.thoughtcrime.securesms.TransportOption;
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.mms.MediaConstraints;
import org.thoughtcrime.securesms.providers.BlobProvider;
import org.thoughtcrime.securesms.util.MediaUtil;
@ -31,6 +32,8 @@ import java.util.Map;
*/
class MediaSendViewModel extends ViewModel {
private static final String TAG = MediaSendViewModel.class.getSimpleName();
private static final int MAX_PUSH = 32;
private static final int MAX_SMS = 1;
@ -176,10 +179,20 @@ class MediaSendViewModel extends ViewModel {
}
void onPageChanged(int position) {
if (position < 0 || position >= getSelectedMediaOrDefault().size()) {
Log.w(TAG, "Tried to move to an out-of-bounds item. Size: " + getSelectedMediaOrDefault().size() + ", position: " + position);
return;
}
this.position.setValue(position);
}
void onMediaItemRemoved(@NonNull Context context, int position) {
if (position < 0 || position >= getSelectedMediaOrDefault().size()) {
Log.w(TAG, "Tried to remove an out-of-bounds item. Size: " + getSelectedMediaOrDefault().size() + ", position: " + position);
return;
}
Media removed = getSelectedMediaOrDefault().remove(position);
if (removed != null && BlobProvider.isAuthority(removed.getUri())) {