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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.am;
import android.content.Intent;
import android.net.Uri;
import java.io.PrintWriter;
import java.util.HashSet;
/**
* Description of a permission granted to an app to access a particular URI.
*
* CTS tests for this functionality can be run with "runtest cts-appsecurity".
*
* Test cases are at cts/tests/appsecurity-tests/test-apps/UsePermissionDiffCert
* /src/com/android/cts/usespermissiondiffcertapp/AccessPermissionWithDiffSigTest.java
*/
class UriPermission {
final int uid;
final Uri uri;
int modeFlags = 0;
int globalModeFlags = 0;
final HashSet<UriPermissionOwner> readOwners = new HashSet<UriPermissionOwner>();
final HashSet<UriPermissionOwner> writeOwners = new HashSet<UriPermissionOwner>();
String stringName;
UriPermission(int _uid, Uri _uri) {
uid = _uid;
uri = _uri;
}
void clearModes(int modeFlagsToClear) {
if ((modeFlagsToClear&Intent.FLAG_GRANT_READ_URI_PERMISSION) != 0) {
globalModeFlags &= ~Intent.FLAG_GRANT_READ_URI_PERMISSION;
modeFlags &= ~Intent.FLAG_GRANT_READ_URI_PERMISSION;
if (readOwners.size() > 0) {
for (UriPermissionOwner r : readOwners) {
r.removeReadPermission(this);
}
readOwners.clear();
}
}
if ((modeFlagsToClear&Intent.FLAG_GRANT_WRITE_URI_PERMISSION) != 0) {
globalModeFlags &= ~Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
modeFlags &= ~Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
if (readOwners.size() > 0) {
for (UriPermissionOwner r : writeOwners) {
r.removeWritePermission(this);
}
readOwners.clear();
}
}
}
public String toString() {
if (stringName != null) {
return stringName;
}
StringBuilder sb = new StringBuilder(128);
sb.append("UriPermission{");
sb.append(Integer.toHexString(System.identityHashCode(this)));
sb.append(' ');
sb.append(uri);
sb.append('}');
return stringName = sb.toString();
}
void dump(PrintWriter pw, String prefix) {
pw.print(prefix); pw.print("modeFlags=0x");
pw.print(Integer.toHexString(modeFlags));
pw.print(" uid="); pw.print(uid);
pw.print(" globalModeFlags=0x");
pw.println(Integer.toHexString(globalModeFlags));
if (readOwners.size() != 0) {
pw.print(prefix); pw.println("readOwners:");
for (UriPermissionOwner owner : readOwners) {
pw.print(prefix); pw.print(" * "); pw.println(owner);
}
}
if (writeOwners.size() != 0) {
pw.print(prefix); pw.println("writeOwners:");
for (UriPermissionOwner owner : writeOwners) {
pw.print(prefix); pw.print(" * "); pw.println(owner);
}
}
}
}
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