diff options
Diffstat (limited to 'com/android/server/slice/SliceProviderPermissions.java')
| -rw-r--r-- | com/android/server/slice/SliceProviderPermissions.java | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/com/android/server/slice/SliceProviderPermissions.java b/com/android/server/slice/SliceProviderPermissions.java new file mode 100644 index 00000000..6e602d59 --- /dev/null +++ b/com/android/server/slice/SliceProviderPermissions.java @@ -0,0 +1,204 @@ +/* + * 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()); + } + } +} |