| /* |
| * Copyright (C) 2018 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.slice; |
| |
| import android.annotation.NonNull; |
| import android.util.ArrayMap; |
| import android.util.ArraySet; |
| import android.util.Slog; |
| |
| import com.android.server.slice.DirtyTracker.Persistable; |
| import com.android.server.slice.SlicePermissionManager.PkgUser; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Objects; |
| |
| public class SliceProviderPermissions implements DirtyTracker, Persistable { |
| |
| private static final String TAG = "SliceProviderPermissions"; |
| |
| static final String TAG_PROVIDER = "provider"; |
| private static final String TAG_AUTHORITY = "authority"; |
| private static final String TAG_PKG = "pkg"; |
| private static final String NAMESPACE = null; |
| |
| private static final String ATTR_PKG = "pkg"; |
| private static final String ATTR_AUTHORITY = "authority"; |
| |
| private final PkgUser mPkg; |
| private final ArrayMap<String, SliceAuthority> mAuths = new ArrayMap<>(); |
| private final DirtyTracker mTracker; |
| |
| public SliceProviderPermissions(@NonNull PkgUser pkg, @NonNull DirtyTracker tracker) { |
| mPkg = pkg; |
| mTracker = tracker; |
| } |
| |
| public PkgUser getPkg() { |
| return mPkg; |
| } |
| |
| public synchronized Collection<SliceAuthority> getAuthorities() { |
| return new ArrayList<>(mAuths.values()); |
| } |
| |
| public synchronized SliceAuthority getOrCreateAuthority(String authority) { |
| SliceAuthority ret = mAuths.get(authority); |
| if (ret == null) { |
| ret = new SliceAuthority(authority, this); |
| mAuths.put(authority, ret); |
| onPersistableDirty(ret); |
| } |
| return ret; |
| } |
| |
| @Override |
| public void onPersistableDirty(Persistable obj) { |
| mTracker.onPersistableDirty(this); |
| } |
| |
| @Override |
| public String getFileName() { |
| return getFileName(mPkg); |
| } |
| |
| public synchronized void writeTo(XmlSerializer out) throws IOException { |
| out.startTag(NAMESPACE, TAG_PROVIDER); |
| out.attribute(NAMESPACE, ATTR_PKG, mPkg.toString()); |
| |
| final int N = mAuths.size(); |
| for (int i = 0; i < N; i++) { |
| out.startTag(NAMESPACE, TAG_AUTHORITY); |
| out.attribute(NAMESPACE, ATTR_AUTHORITY, mAuths.valueAt(i).mAuthority); |
| |
| mAuths.valueAt(i).writeTo(out); |
| |
| out.endTag(NAMESPACE, TAG_AUTHORITY); |
| } |
| |
| out.endTag(NAMESPACE, TAG_PROVIDER); |
| } |
| |
| public static SliceProviderPermissions createFrom(XmlPullParser parser, DirtyTracker tracker) |
| throws XmlPullParserException, IOException { |
| // Get to the beginning of the provider. |
| while (parser.getEventType() != XmlPullParser.START_TAG |
| || !TAG_PROVIDER.equals(parser.getName())) { |
| parser.next(); |
| } |
| int depth = parser.getDepth(); |
| PkgUser pkgUser = new PkgUser(parser.getAttributeValue(NAMESPACE, ATTR_PKG)); |
| SliceProviderPermissions provider = new SliceProviderPermissions(pkgUser, tracker); |
| parser.next(); |
| |
| while (parser.getDepth() > depth) { |
| if (parser.getEventType() == XmlPullParser.START_TAG |
| && TAG_AUTHORITY.equals(parser.getName())) { |
| try { |
| SliceAuthority authority = new SliceAuthority( |
| parser.getAttributeValue(NAMESPACE, ATTR_AUTHORITY), provider); |
| authority.readFrom(parser); |
| provider.mAuths.put(authority.getAuthority(), authority); |
| } catch (IllegalArgumentException e) { |
| Slog.e(TAG, "Couldn't read PkgUser", e); |
| } |
| } |
| |
| parser.next(); |
| } |
| return provider; |
| } |
| |
| public static String getFileName(PkgUser pkg) { |
| return String.format("provider_%s", pkg.toString()); |
| } |
| |
| public static class SliceAuthority implements Persistable { |
| private final String mAuthority; |
| private final DirtyTracker mTracker; |
| private final ArraySet<PkgUser> mPkgs = new ArraySet<>(); |
| |
| public SliceAuthority(String authority, DirtyTracker tracker) { |
| mAuthority = authority; |
| mTracker = tracker; |
| } |
| |
| public String getAuthority() { |
| return mAuthority; |
| } |
| |
| public synchronized void addPkg(PkgUser pkg) { |
| if (mPkgs.add(pkg)) { |
| mTracker.onPersistableDirty(this); |
| } |
| } |
| |
| public synchronized void removePkg(PkgUser pkg) { |
| if (mPkgs.remove(pkg)) { |
| mTracker.onPersistableDirty(this); |
| } |
| } |
| |
| public synchronized Collection<PkgUser> getPkgs() { |
| return new ArraySet<>(mPkgs); |
| } |
| |
| @Override |
| public String getFileName() { |
| return null; |
| } |
| |
| public synchronized void writeTo(XmlSerializer out) throws IOException { |
| final int N = mPkgs.size(); |
| for (int i = 0; i < N; i++) { |
| out.startTag(NAMESPACE, TAG_PKG); |
| out.text(mPkgs.valueAt(i).toString()); |
| out.endTag(NAMESPACE, TAG_PKG); |
| } |
| } |
| |
| public synchronized void readFrom(XmlPullParser parser) |
| throws IOException, XmlPullParserException { |
| parser.next(); |
| int depth = parser.getDepth(); |
| while (parser.getDepth() >= depth) { |
| if (parser.getEventType() == XmlPullParser.START_TAG |
| && TAG_PKG.equals(parser.getName())) { |
| mPkgs.add(new PkgUser(parser.nextText())); |
| } |
| parser.next(); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (!getClass().equals(obj != null ? obj.getClass() : null)) return false; |
| SliceAuthority other = (SliceAuthority) obj; |
| return Objects.equals(mAuthority, other.mAuthority) |
| && Objects.equals(mPkgs, other.mPkgs); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("(%s: %s)", mAuthority, mPkgs.toString()); |
| } |
| } |
| } |