protected void checkKeyIntent(
int authUid,
Intent intent) throws SecurityException {
+ intent.setFlags(intent.getFlags() & ~(Intent.FLAG_GRANT_READ_URI_PERMISSION
+ | Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+ | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION
+ | Intent.FLAG_GRANT_PREFIX_URI_PERMISSION));
long bid = Binder.clearCallingIdentity();
try {
PackageManager pm = mContext.getPackageManager();
return -1;
}
+ // Bail early if system is trying to hand out permissions directly; it
+ // must always grant permissions on behalf of someone explicit.
+ final int callingAppId = UserHandle.getAppId(callingUid);
+ if ((callingAppId == SYSTEM_UID) || (callingAppId == ROOT_UID)) {
+ if ("com.android.settings.files".equals(grantUri.uri.getAuthority())) {
+ // Exempted authority for cropping user photos in Settings app
+ } else {
+ Slog.w(TAG, "For security reasons, the system cannot issue a Uri permission"
+ + " grant to " + grantUri + "; use startActivityAsCaller() instead");
+ return -1;
+ }
+ }
+
final String authority = grantUri.uri.getAuthority();
final ProviderInfo pi = getProviderInfoLocked(authority, grantUri.sourceUserId,
MATCH_DEBUG_TRIAGED_MISSING);
// Third... does the caller itself have permission to access
// this uri?
- final int callingAppId = UserHandle.getAppId(callingUid);
- if ((callingAppId == SYSTEM_UID) || (callingAppId == ROOT_UID)) {
- if ("com.android.settings.files".equals(grantUri.uri.getAuthority())) {
- // Exempted authority for cropping user photos in Settings app
- } else {
- Slog.w(TAG, "For security reasons, the system cannot issue a Uri permission"
- + " grant to " + grantUri + "; use startActivityAsCaller() instead");
- return -1;
- }
- }
if (!checkHoldingPermissionsLocked(pm, pi, grantUri, callingUid, modeFlags)) {
// Require they hold a strong enough Uri permission
if (!checkUriPermissionLocked(grantUri, callingUid, modeFlags)) {