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Android example source code file (UriPermission.java)

This example Android source code file (UriPermission.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, content, hashset, historyrecord, internet, io, net, network, string, stringbuilder, uripermission

The UriPermission.java Android example source code

/*
 * 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;

class UriPermission {
    final int uid;
    final Uri uri;
    int modeFlags = 0;
    int globalModeFlags = 0;
    final HashSet<HistoryRecord> readActivities = new HashSet();
    final HashSet<HistoryRecord> writeActivities = new HashSet();
    
    String stringName;
    
    UriPermission(int _uid, Uri _uri) {
        uid = _uid;
        uri = _uri;
    }
    
    void clearModes(int modeFlags) {
        if ((modeFlags&Intent.FLAG_GRANT_READ_URI_PERMISSION) != 0) {
            globalModeFlags &= ~Intent.FLAG_GRANT_READ_URI_PERMISSION;
            modeFlags &= ~Intent.FLAG_GRANT_READ_URI_PERMISSION;
            if (readActivities.size() > 0) {
                for (HistoryRecord r : readActivities) {
                    r.readUriPermissions.remove(this);
                    if (r.readUriPermissions.size() == 0) {
                        r.readUriPermissions = null;
                    }
                }
                readActivities.clear();
            }
        }
        if ((modeFlags&Intent.FLAG_GRANT_WRITE_URI_PERMISSION) != 0) {
            globalModeFlags &= ~Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
            modeFlags &= ~Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
            if (readActivities.size() > 0) {
                for (HistoryRecord r : readActivities) {
                    r.writeUriPermissions.remove(this);
                    if (r.writeUriPermissions.size() == 0) {
                        r.writeUriPermissions = null;
                    }
                }
                readActivities.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 (readActivities.size() != 0) {
            pw.print(prefix); pw.print("readActivities="); pw.println(readActivities);
        }
        if (writeActivities.size() != 0) {
            pw.print(prefix); pw.print("writeActivities="); pw.println(writeActivities);
        }
    }
}

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