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Commit f1977b45 authored by Christopher Tate's avatar Christopher Tate
Browse files

Expand install observer semantics 

...and now fail conservatively when two apps both attempt to define
the same permission.  Apps signed with the same certificate are
permitted to redefine permissions.

We also finally have a (hidden) interface class for observing package
installation so that we can now rev the interface without breaking
existing callers.

Bug 13551375

Change-Id: Ifa4e59154dcccbb286ee46a35a6f25e4ad0f0f01
parent 9ad8a533

Android.mk

+1 −0
Original line number Diff line number Diff line
@@ -120,6 +120,7 @@ LOCAL_SRC_FILES += \ 
	core/java/android/content/pm/IPackageDataObserver.aidl \

	core/java/android/content/pm/IPackageDeleteObserver.aidl \

	core/java/android/content/pm/IPackageInstallObserver.aidl \

	core/java/android/content/pm/IPackageInstallObserver2.aidl \

	core/java/android/content/pm/IPackageManager.aidl \

	core/java/android/content/pm/IPackageMoveObserver.aidl \

	core/java/android/content/pm/IPackageStatsObserver.aidl \

cmds/pm/src/com/android/commands/pm/Pm.java

+27 −7
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ import android.content.pm.ContainerEncryptionParams; 
import android.content.pm.FeatureInfo;

import android.content.pm.IPackageDataObserver;

import android.content.pm.IPackageDeleteObserver;

import android.content.pm.IPackageInstallObserver;

import android.content.pm.IPackageInstallObserver2;

import android.content.pm.IPackageManager;

import android.content.pm.InstrumentationInfo;

import android.content.pm.PackageInfo;
@@ -39,6 +39,7 @@ import android.content.pm.VerificationParams; 
import android.content.res.AssetManager;

import android.content.res.Resources;

import android.net.Uri;

import android.os.Bundle;

import android.os.IUserManager;

import android.os.Process;

import android.os.RemoteException;
@@ -700,14 +701,23 @@ public final class Pm { 
        ActivityManager.dumpPackageStateStatic(FileDescriptor.out, pkg);

    }



    class PackageInstallObserver extends IPackageInstallObserver.Stub {

    class PackageInstallObserver extends IPackageInstallObserver2.Stub {

        boolean finished;

        int result;

        String extraPermission;

        String extraPackage;



        public void packageInstalled(String name, int status) {

        @Override

        public void packageInstalled(String name, Bundle extras, int status) {

            synchronized( this) {

                finished = true;

                result = status;

                if (status == PackageManager.INSTALL_FAILED_DUPLICATE_PERMISSION) {

                    extraPermission = extras.getString(

                            PackageManager.EXTRA_FAILURE_EXISTING_PERMISSION);

                    extraPackage = extras.getString(

                            PackageManager.EXTRA_FAILURE_EXISTING_PACKAGE);

                }

                notifyAll();

            }

        }
@@ -717,7 +727,8 @@ public final class Pm { 
     * Converts a failure code into a string by using reflection to find a matching constant

     * in PackageManager.

     */

    private String installFailureToString(int result) {

    private String installFailureToString(PackageInstallObserver obs) {

        final int result = obs.result;

        Field[] fields = PackageManager.class.getFields();

        for (Field f: fields) {

            if (f.getType() == int.class) {
@@ -732,7 +743,16 @@ public final class Pm { 
                        // get the int value and compare it to result.

                        try {

                            if (result == f.getInt(null)) {

                                return fieldName;

                                StringBuilder sb = new StringBuilder(64);

                                sb.append(fieldName);

                                if (obs.extraPermission != null) {

                                    sb.append(" perm=");

                                    sb.append(obs.extraPermission);

                                }

                                if (obs.extraPackage != null) {

                                    sb.append(" pkg=" + obs.extraPackage);

                                }

                                return sb.toString();

                            }

                        } catch (IllegalAccessException e) {

                            // this shouldn't happen since we only look for public static fields.
@@ -956,7 +976,7 @@ public final class Pm { 
            VerificationParams verificationParams = new VerificationParams(verificationURI,

                    originatingURI, referrerURI, VerificationParams.NO_UID, null);



            mPm.installPackageWithVerificationAndEncryption(apkURI, obs, installFlags,

            mPm.installPackageWithVerificationAndEncryptionEtc(apkURI, null, obs, installFlags,

                    installerPackageName, verificationParams, encryptionParams);



            synchronized (obs) {
@@ -970,7 +990,7 @@ public final class Pm { 
                    System.out.println("Success");

                } else {

                    System.err.println("Failure ["

                            + installFailureToString(obs.result)

                            + installFailureToString(obs)

                            + "]");

                }

            }

core/java/android/app/ApplicationPackageManager.java

+44 −5
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ import android.content.pm.FeatureInfo; 
import android.content.pm.IPackageDataObserver;

import android.content.pm.IPackageDeleteObserver;

import android.content.pm.IPackageInstallObserver;

import android.content.pm.IPackageInstallObserver2;

import android.content.pm.IPackageManager;

import android.content.pm.IPackageMoveObserver;

import android.content.pm.IPackageStatsObserver;
@@ -1073,7 +1074,7 @@ final class ApplicationPackageManager extends PackageManager { 
    public void installPackage(Uri packageURI, IPackageInstallObserver observer, int flags,

                               String installerPackageName) {

        try {

            mPM.installPackage(packageURI, observer, flags, installerPackageName);

            mPM.installPackageEtc(packageURI, observer, null, flags, installerPackageName);

        } catch (RemoteException e) {

            // Should never happen!

        }
@@ -1084,8 +1085,8 @@ final class ApplicationPackageManager extends PackageManager { 
            int flags, String installerPackageName, Uri verificationURI,

            ManifestDigest manifestDigest, ContainerEncryptionParams encryptionParams) {

        try {

            mPM.installPackageWithVerification(packageURI, observer, flags, installerPackageName,

                    verificationURI, manifestDigest, encryptionParams);

            mPM.installPackageWithVerificationEtc(packageURI, observer, null, flags,

                    installerPackageName, verificationURI, manifestDigest, encryptionParams);

        } catch (RemoteException e) {

            // Should never happen!

        }
@@ -1096,8 +1097,46 @@ final class ApplicationPackageManager extends PackageManager { 
            IPackageInstallObserver observer, int flags, String installerPackageName,

            VerificationParams verificationParams, ContainerEncryptionParams encryptionParams) {

        try {

            mPM.installPackageWithVerificationAndEncryption(packageURI, observer, flags,

                    installerPackageName, verificationParams, encryptionParams);

            mPM.installPackageWithVerificationAndEncryptionEtc(packageURI, observer, null,

                    flags, installerPackageName, verificationParams, encryptionParams);

        } catch (RemoteException e) {

            // Should never happen!

        }

    }



    // Expanded observer-API versions

    @Override

    public void installPackage(Uri packageURI, PackageInstallObserver observer,

            int flags, String installerPackageName) {

        try {

            mPM.installPackageEtc(packageURI, null, observer.mObserver,

                    flags, installerPackageName);

        } catch (RemoteException e) {

            // Should never happen!

        }

    }



    @Override

    public void installPackageWithVerification(Uri packageURI,

            PackageInstallObserver observer, int flags, String installerPackageName,

            Uri verificationURI, ManifestDigest manifestDigest,

            ContainerEncryptionParams encryptionParams) {

        try {

            mPM.installPackageWithVerificationEtc(packageURI, null, observer.mObserver, flags,

                    installerPackageName, verificationURI, manifestDigest, encryptionParams);

        } catch (RemoteException e) {

            // Should never happen!

        }

    }



    @Override

    public void installPackageWithVerificationAndEncryption(Uri packageURI,

            PackageInstallObserver observer, int flags, String installerPackageName,

            VerificationParams verificationParams, ContainerEncryptionParams encryptionParams) {

        try {

            mPM.installPackageWithVerificationAndEncryptionEtc(packageURI, null,

                    observer.mObserver, flags, installerPackageName, verificationParams,

                    encryptionParams);

        } catch (RemoteException e) {

            // Should never happen!

        }

core/java/android/app/PackageInstallObserver.java

0 → 100644
+49 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2014 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 android.app;



import android.content.pm.IPackageInstallObserver2;

import android.os.Bundle;

import android.os.RemoteException;



/**

 * @hide

 *

 * New-style observer for package installers to use.

 */

public class PackageInstallObserver {

    IPackageInstallObserver2.Stub mObserver = new IPackageInstallObserver2.Stub() {

        @Override

        public void packageInstalled(String pkgName, Bundle extras, int result)

                throws RemoteException {

            PackageInstallObserver.this.packageInstalled(pkgName, extras, result);

        }

    };



    /**

     * This method will be called to report the result of the package installation attempt.

     *

     * @param pkgName Name of the package whose installation was attempted

     * @param extras If non-null, this Bundle contains extras providing additional information

     *        about an install failure.  See {@link android.content.pm.PackageManager} for

     *        documentation about which extras apply to various failures; in particular the

     *        strings named EXTRA_FAILURE_*.

     * @param result The numeric success or failure code indicating the basic outcome

     */

    public void packageInstalled(String pkgName, Bundle extras, int result) {

    }

}

core/java/android/content/pm/IPackageInstallObserver2.aidl

0 → 100644
+45 −0
Original line number Diff line number Diff line 
/*

**

** Copyright 2014, 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 android.content.pm;



import android.os.Bundle;



/**

 * API for installation callbacks from the Package Manager.  In certain result cases

 * additional information will be provided.

 * @hide

 */

oneway interface IPackageInstallObserver2 {

    /**

     * The install operation has completed.  {@code returnCode} holds a numeric code

     * indicating success or failure.  In certain cases the {@code extras} Bundle will

     * contain additional details:

     *

     * <p><table>

     * <tr>

     *   <td>INSTALL_FAILED_DUPLICATE_PERMISSION</td>

     *   <td>Two strings are provided in the extras bundle: EXTRA_EXISTING_PERMISSION

     *       is the name of the permission that the app is attempting to define, and

     *       EXTRA_EXISTING_PACKAGE is the package name of the app which has already

     *       defined the permission.</td>

     * </tr>

     * </table>

     */

    void packageInstalled(in String packageName, in Bundle extras, int returnCode);

}