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Commit 1b861278 authored by Jeff Sharkey's avatar Jeff Sharkey
Browse files

Teach NetworkPolicyManager how to dumpsys itself. 

Includes details on all internally known UIDs, which can be used for
debugging purposes.

Change-Id: I340d25212e3c7a76a57de0a94ffeea34b6748941
parent 751fb110

core/java/android/net/NetworkPolicyManager.java

+21 −0
Original line number Diff line number Diff line
@@ -19,6 +19,8 @@ package android.net; 
import android.content.Context;

import android.os.RemoteException;



import java.io.PrintWriter;



/**

 * Manager for creating and modifying network policy rules.

 *
@@ -69,4 +71,23 @@ public class NetworkPolicyManager { 
            return POLICY_NONE;

        }

    }

    

    /** {@hide} */

    public static void dumpPolicy(PrintWriter fout, int policy) {

        fout.write("[");

        if ((policy & POLICY_REJECT_PAID_BACKGROUND) != 0) {

            fout.write("REJECT_PAID_BACKGROUND");

        }

        fout.write("]");

    }



    /** {@hide} */

    public static void dumpRules(PrintWriter fout, int rules) {

        fout.write("[");

        if ((rules & RULE_REJECT_PAID) != 0) {

            fout.write("REJECT_PAID");

        }

        fout.write("]");

    }



}

services/java/com/android/server/net/NetworkPolicyManagerService.java

+77 −0
Original line number Diff line number Diff line
@@ -16,12 +16,15 @@ 


package com.android.server.net;



import static android.Manifest.permission.DUMP;

import static android.Manifest.permission.MANAGE_APP_TOKENS;

import static android.Manifest.permission.UPDATE_DEVICE_STATS;

import static android.net.NetworkPolicyManager.POLICY_NONE;

import static android.net.NetworkPolicyManager.POLICY_REJECT_PAID_BACKGROUND;

import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;

import static android.net.NetworkPolicyManager.RULE_REJECT_PAID;

import static android.net.NetworkPolicyManager.dumpPolicy;

import static android.net.NetworkPolicyManager.dumpRules;



import android.app.IActivityManager;

import android.app.IProcessObserver;
@@ -41,6 +44,9 @@ import android.util.SparseArray; 
import android.util.SparseBooleanArray;

import android.util.SparseIntArray;



import java.io.FileDescriptor;

import java.io.PrintWriter;



/**

 * Service that maintains low-level network policy rules and collects usage

 * statistics to drive those rules.
@@ -219,6 +225,53 @@ public class NetworkPolicyManagerService extends INetworkPolicyManager.Stub { 
        mListeners.unregister(listener);

    }



    @Override

    protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) {

        mContext.enforceCallingOrSelfPermission(DUMP, "requires DUMP permission");



        synchronized (mRulesLock) {

            fout.println("Policy status for known UIDs:");



            final SparseBooleanArray knownUids = new SparseBooleanArray();

            collectKeys(mUidPolicy, knownUids);

            collectKeys(mUidForeground, knownUids);

            collectKeys(mUidRules, knownUids);



            final int size = knownUids.size();

            for (int i = 0; i < size; i++) {

                final int uid = knownUids.keyAt(i);

                fout.print("  UID=");

                fout.print(uid);



                fout.print(" policy=");

                final int policyIndex = mUidPolicy.indexOfKey(uid);

                if (policyIndex < 0) {

                    fout.print("UNKNOWN");

                } else {

                    dumpPolicy(fout, mUidPolicy.valueAt(policyIndex));

                }



                fout.print(" foreground=");

                final int foregroundIndex = mUidPidForeground.indexOfKey(uid);

                if (foregroundIndex < 0) {

                    fout.print("UNKNOWN");

                } else {

                    dumpSparseBooleanArray(fout, mUidPidForeground.valueAt(foregroundIndex));

                }



                fout.print(" rules=");

                final int rulesIndex = mUidRules.indexOfKey(uid);

                if (rulesIndex < 0) {

                    fout.print("UNKNOWN");

                } else {

                    dumpRules(fout, mUidRules.valueAt(rulesIndex));

                }



                fout.println();

            }

        }

    }

    

    private boolean isUidForegroundL(int uid) {

        // only really in foreground when screen is also on

        return mUidForeground.get(uid, false) && mScreenOn;
@@ -309,4 +362,28 @@ public class NetworkPolicyManagerService extends INetworkPolicyManager.Stub { 
        }

        return value;

    }

    

    private static void collectKeys(SparseIntArray source, SparseBooleanArray target) {

        final int size = source.size();

        for (int i = 0; i < size; i++) {

            target.put(source.keyAt(i), true);

        }

    }



    private static void collectKeys(SparseBooleanArray source, SparseBooleanArray target) {

        final int size = source.size();

        for (int i = 0; i < size; i++) {

            target.put(source.keyAt(i), true);

        }

    }



    private static void dumpSparseBooleanArray(PrintWriter fout, SparseBooleanArray value) {

        fout.print("[");

        final int size = value.size();

        for (int i = 0; i < size; i++) {

            fout.print(value.keyAt(i) + "=" + value.valueAt(i));

            if (i < size - 1) fout.print(",");

        }

        fout.print("]");

    }

}