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Prevent exfiltration of system files via avatar picker. am: f70e351d1a am: 05ea36ddc5 am: ff5b6611cf

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Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/19745058

Change-Id: Id74cd5fe28cec05a3fd87fc5434d28fad639e1b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
This commit is contained in:
Oli Lan
2022-09-07 20:24:55 +00:00
committed by Automerger Merge Worker
parent e2815b7e11 ff5b6611cf
commit cbf1699cd7
1 changed files with 30 additions and 13 deletions
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43
src/com/android/settings/users/EditUserPhotoController.java
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@@ -21,7 +21,9 @@ import android.content.ClipData;
import android.content.ContentResolver; import android.content.ContentResolver;
import android.content.Context; import android.content.Context;
import android.content.Intent; import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager; import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.database.Cursor; import android.database.Cursor;
import android.graphics.Bitmap; import android.graphics.Bitmap;
import android.graphics.Bitmap.Config; import android.graphics.Bitmap.Config;
@@ -78,6 +80,7 @@ public class EditUserPhotoController {
private static final int REQUEST_CODE_TAKE_PHOTO = 1002; private static final int REQUEST_CODE_TAKE_PHOTO = 1002;
private static final int REQUEST_CODE_CROP_PHOTO = 1003; private static final int REQUEST_CODE_CROP_PHOTO = 1003;
private static final String PRE_CROP_PICTURE_FILE_NAME = "PreCropEditUserPhoto.jpg";
private static final String CROP_PICTURE_FILE_NAME = "CropEditUserPhoto.jpg"; private static final String CROP_PICTURE_FILE_NAME = "CropEditUserPhoto.jpg";
private static final String TAKE_PICTURE_FILE_NAME = "TakeEditUserPhoto2.jpg"; private static final String TAKE_PICTURE_FILE_NAME = "TakeEditUserPhoto2.jpg";
private static final String NEW_USER_PHOTO_FILE_NAME = "NewUserPhoto.png"; private static final String NEW_USER_PHOTO_FILE_NAME = "NewUserPhoto.png";
@@ -88,6 +91,7 @@ public class EditUserPhotoController {
private final Fragment mFragment; private final Fragment mFragment;
private final ImageView mImageView; private final ImageView mImageView;
private final Uri mPreCropPictureUri;
private final Uri mCropPictureUri; private final Uri mCropPictureUri;
private final Uri mTakePictureUri; private final Uri mTakePictureUri;
@@ -99,6 +103,8 @@ public class EditUserPhotoController {
mContext = view.getContext(); mContext = view.getContext();
mFragment = fragment; mFragment = fragment;
mImageView = view; mImageView = view;
mPreCropPictureUri = createTempImageUri(mContext, PRE_CROP_PICTURE_FILE_NAME, !waiting);
mCropPictureUri = createTempImageUri(mContext, CROP_PICTURE_FILE_NAME, !waiting); mCropPictureUri = createTempImageUri(mContext, CROP_PICTURE_FILE_NAME, !waiting);
mTakePictureUri = createTempImageUri(mContext, TAKE_PICTURE_FILE_NAME, !waiting); mTakePictureUri = createTempImageUri(mContext, TAKE_PICTURE_FILE_NAME, !waiting);
mPhotoSize = getPhotoSize(mContext); mPhotoSize = getPhotoSize(mContext);
@@ -133,7 +139,7 @@ public class EditUserPhotoController {
case REQUEST_CODE_TAKE_PHOTO: case REQUEST_CODE_TAKE_PHOTO:
case REQUEST_CODE_CHOOSE_PHOTO: case REQUEST_CODE_CHOOSE_PHOTO:
if (mTakePictureUri.equals(pictureUri)) { if (mTakePictureUri.equals(pictureUri)) {
cropPhoto(); cropPhoto(pictureUri);
} else { } else {
copyAndCropPhoto(pictureUri); copyAndCropPhoto(pictureUri);
} }
@@ -229,7 +235,7 @@ public class EditUserPhotoController {
protected Void doInBackground(Void... params) { protected Void doInBackground(Void... params) {
final ContentResolver cr = mContext.getContentResolver(); final ContentResolver cr = mContext.getContentResolver();
try (InputStream in = cr.openInputStream(pictureUri); try (InputStream in = cr.openInputStream(pictureUri);
OutputStream out = cr.openOutputStream(mTakePictureUri)) { OutputStream out = cr.openOutputStream(mPreCropPictureUri)) {
Streams.copy(in, out); Streams.copy(in, out);
} catch (IOException e) { } catch (IOException e) {
Log.w(TAG, "Failed to copy photo", e); Log.w(TAG, "Failed to copy photo", e);
@@ -240,27 +246,38 @@ public class EditUserPhotoController {
@Override @Override
protected void onPostExecute(Void result) { protected void onPostExecute(Void result) {
if (!mFragment.isAdded()) return; if (!mFragment.isAdded()) return;
cropPhoto(); cropPhoto(mPreCropPictureUri);
} }
}.execute(); }.execute();
} }
private void cropPhoto() { private void cropPhoto(final Uri pictureUri) {
// TODO: Use a public intent, when there is one. // TODO: Use a public intent, when there is one.
Intent intent = new Intent("com.android.camera.action.CROP"); Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(mTakePictureUri, "image/*"); intent.setDataAndType(pictureUri, "image/*");
appendOutputExtra(intent, mCropPictureUri); appendOutputExtra(intent, mCropPictureUri);
appendCropExtras(intent); appendCropExtras(intent);
if (intent.resolveActivity(mContext.getPackageManager()) != null) { try {
try { StrictMode.disableDeathOnFileUriExposure();
StrictMode.disableDeathOnFileUriExposure(); if (startSystemActivityForResult(intent, REQUEST_CODE_CROP_PHOTO)) {
mFragment.startActivityForResult(intent, REQUEST_CODE_CROP_PHOTO); return;
} finally {
StrictMode.enableDeathOnFileUriExposure();
} }
} else { } finally {
onPhotoCropped(mTakePictureUri, false); StrictMode.enableDeathOnFileUriExposure();
} }
onPhotoCropped(mTakePictureUri, false);
}
private boolean startSystemActivityForResult(Intent intent, int code) {
List<ResolveInfo> resolveInfos = mContext.getPackageManager()
.queryIntentActivities(intent, PackageManager.MATCH_SYSTEM_ONLY);
if (resolveInfos.isEmpty()) {
Log.w(TAG, "No system package activity could be found for code " + code);
return false;
}
intent.setPackage(resolveInfos.get(0).activityInfo.packageName);
mFragment.startActivityForResult(intent, code);
return true;
} }
private void appendOutputExtra(Intent intent, Uri pictureUri) { private void appendOutputExtra(Intent intent, Uri pictureUri) {