需求是这样的，客户要求提供系统的接口来控制apk的安装和卸载，接口如下
boolean setAppInstallationPolicies(int mode, String[] appPackageNames) mode：应用名单类型 0：黑名单(应用包名列表中的所有项都不允许安装)； 1：白名单(只允许安装应用包名列表中的项)。 appPackageNames：应用包名列表。当appPackageNames为空时，取消所有已设定的应用。 成功返回true；失败返回false。 String[] getAppInstallationPolicies() 返回值为当前应用安装管控状态 string[0]：功能模式，参见setAppInstallationPolicies方法的mode参数。 string[1]至string[n-1]：应用包名列表。 boolean setAppUninstallationPolicies(int mode, String[] appPackageNames) mode：应用名单类型 0：黑名单(应用包名列表中的所有项均强制卸载)； 1：白名单(应用包名列表中的所有项禁止卸载)。 appPackageNames：应用包名列表。当appPackageNames为空时，取消所有已设定的应用。 成功返回true；失败返回false。 String[] getAppUninstallationPolicies() 返回值为当前应用卸载管控状态 string[0]：功能模式，参见setAppUninstallationPolicies方法的mode参数。 string[1]至string[n-1]：应用包名列表。
android版本为9.0，首先想到的是在系统里面添加一个自己的service,分别在frameworks/base/core/java/android/app/添加IPolicyManager.aidl，frameworks/base/services/core/java/com/android/server/添加PolicyManagerService.java，在frameworks/base/添加policy/java/ga/mdm/PolicyManager.java，内容如下
package android.app;
/** {@hide} */
interface IPolicyManager
{
boolean setAppInstallationPolicies(int mode,inout String[] appPackageNames);
String[] getAppInstallationPolicies();
boolean setAppUninstallationPolicies(int mode,inout String[] appPackageNames);
String[] getAppUninstallationPolicies();
}
package com.android.server;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.ServiceManager;
import android.os.SystemProperties;
import android.provider.Settings;
import android.util.Slog;
import java.lang.reflect.Field;
import java.util.ArrayList;
import android.app.IPolicyManager;
import android.net.wifi.WifiManager;
import android.content.pm.PackageManager;
import android.app.ActivityManager;
import android.content.pm.IPackageDataObserver;
public class PolicyManagerService extends IPolicyManager.Stub {
private final String TAG = "PolicyManagerService";
private Context mContext;
private String[] mAppPackageNames = null;
private String[] mAppUninstallPackageNames = null;
public PolicyManagerService(Context context) {
mContext = context;
}
@Override
public boolean setAppInstallationPolicies(int mode, String[] appPackageNames){
if(mode==0){
Settings.System.putInt(mContext.getContentResolver(),"customer_app_status", 0);
}else if(mode==1){
Settings.System.putInt(mContext.getContentResolver(),"customer_app_status", 1);
}else{
return false;
}
mAppPackageNames = appPackageNames;
return true;
}
@Override
public String[] getAppInstallationPolicies(){
return mAppPackageNames;
}
@Override
public boolean setAppUninstallationPolicies(int mode,String[] appPackageNames){
if(mode==0){
Settings.System.putInt(mContext.getContentResolver(),"customer_appuninstall_status", 0);
}else if(mode==1){
Settings.System.putInt(mContext.getContentResolver(),"customer_appuninstall_status", 1);
}else{
return false;
}
mAppUninstallPackageNames = appPackageNames;
return true;
}
@Override
public String[] getAppUninstallationPolicies(){
return mAppUninstallPackageNames;
}
}
package ga.mdm;
import android.util.Slog;
import android.os.RemoteException;
import android.content.Context;
import android.app.IPolicyManager;
public class PolicyManager {
private final String TAG = "PolicyManager";
Context mContext;
private final IPolicyManager mService;
public PolicyManager(Context context,IPolicyManager mService) {
mContext = context;
this.mService = mService;
}
public boolean setAppInstallationPolicies(int mode,String[] appPackageNames){
try {
return mService.setAppInstallationPolicies(mode,appPackageNames);
} catch (RemoteException ex) {
ex.printStackTrace();
return false;
}
}
public String[] getAppInstallationPolicies(){
try {
return mService.getAppInstallationPolicies();
} catch (RemoteException ex) {
ex.printStackTrace();
return null;
}
}
public boolean setAppUninstallationPolicies(int mode,String[] appPackageNames){
try {
return mService.setAppUninstallationPolicies(mode,appPackageNames);
} catch (RemoteException ex) {
ex.printStackTrace();
return false;
}
}
public String[] getAppUninstallationPolicies(){
try {
return mService.getAppUninstallationPolicies();
} catch (RemoteException ex) {
ex.printStackTrace();
return null;
}
}
}
同时在frameworks/base/policy/添加Android.mk
# 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. LOCAL_PATH := $(call my-dir) # Build the java code # ============================================================ include $(CLEAR_VARS) LOCAL_AIDL_INCLUDES := $(LOCAL_PATH)/java LOCAL_SRC_FILES := $(call all-java-files-under, java) \ $(call all-Iaidl-files-under, java) \ $(call all-logtags-files-under, java) LOCAL_JAVA_LIBRARIES := services LOCAL_MODULE := policy include $(BUILD_JAVA_LIBRARY) include $(call all-makefiles-under,$(LOCAL_PATH))
这里为什么将PolicyManager.java单独出来，因为PolicyManager.java是提供给客户用的，单独生成一个jar包，客户只需要使用policy.jar就可以调用，同时需要添加
--- frameworks/base/Android.bp (revision 221)
+++ frameworks/base/Android.bp (working copy)
@@ -46,7 +46,8 @@
"wifi/java/**/*.java",
"keystore/java/**/*.java",
"rs/java/**/*.java",
-
+ "policy/java/**/*.java",
+
":framework-javastream-protos",
"core/java/android/accessibilityservice/IAccessibilityServiceConnection.aidl",
@@ -105,6 +106,7 @@
"core/java/android/app/usage/ICacheQuotaService.aidl",
"core/java/android/app/usage/IStorageStatsManager.aidl",
"core/java/android/app/usage/IUsageStatsManager.aidl",
+ "core/java/android/app/IPolicyManager.aidl",
":libbluetooth-binder-aidl",
"core/java/android/content/IClipboard.aidl",
"core/java/android/content/IContentService.aidl",
将路径添加到，否则不会编译
-- build/make/core/pathmap.mk (revision 221) +++ build/make/core/pathmap.mk (working copy) @@ -83,6 +83,7 @@ lowpan \ keystore \ rs \ + policy \ )
添加模块
--- build/make/target/product/base.mk (revision 221) +++ build/make/target/product/base.mk (working copy) @@ -142,7 +142,8 @@ traced_probes \ vdc \ vold \ - wm + wm \ + policy
添加注册服务的代码
--- frameworks/base/core/java/android/content/Context.java (revision 221) +++ frameworks/base/core/java/android/content/Context.java (working copy) @@ -4198,6 +4198,9 @@ * @see #getSystemService(String) */ public static final String CROSS_PROFILE_APPS_SERVICE = "crossprofileapps"; + + + public static final String POLICY_SERVICE = "policy";
+import ga.mdm.PolicyManager;
+
/**
* Manages all of the system services that can be returned by {@link Context#getSystemService}.
* Used by {@link ContextImpl}.
@@ -982,6 +984,15 @@
return new VrManager(IVrManager.Stub.asInterface(b));
}
});
+
+ registerService(Context.POLICY_SERVICE, PolicyManager.class,
+ new CachedServiceFetcher<PolicyManager>() {
+ @Override
+ public PolicyManager createService(ContextImpl ctx) {
+ IBinder b = ServiceManager.getService(Context.POLICY_SERVICE);
+ IPolicyManager service = IPolicyManager.Stub.asInterface(b);
+ return new PolicyManager(ctx, service);
+ }});
+import com.android.server.PolicyManagerService;
+
public final class SystemServer {
private static final String TAG = "SystemServer";
@@ -1287,7 +1289,14 @@
}
traceEnd();
}
-
+
+ try {
+ Slog.i(TAG, "ClassMonitor Service is create");
+ ServiceManager.addService(Context.POLICY_SERVICE, new PolicyManagerService(context));
+ } catch (Throwable e) {
+ reportWtf("starting ClassMonitorService", e);
+ }
还需要添加selinux权限
--- system/sepolicy/Android.mk (revision 221)
+++ system/sepolicy/Android.mk (working copy)
@@ -244,10 +244,10 @@
ifneq ($(with_asan),true)
ifneq ($(SELINUX_IGNORE_NEVERALLOWS),true)
-LOCAL_REQUIRED_MODULES += \
- sepolicy_tests \
- treble_sepolicy_tests_26.0 \
- treble_sepolicy_tests_27.0 \
+#LOCAL_REQUIRED_MODULES += \
+# sepolicy_tests \
+# treble_sepolicy_tests_26.0 \
+# treble_sepolicy_tests_27.0 \
endif
endif
Index: system/sepolicy/prebuilts/api/26.0/nonplat_sepolicy.cil
===================================================================
--- system/sepolicy/prebuilts/api/26.0/nonplat_sepolicy.cil (revision 221)
+++ system/sepolicy/prebuilts/api/26.0/nonplat_sepolicy.cil (working copy)
@@ -135,6 +135,8 @@
(typeattributeset hal_wifi_supplicant_server (hal_wifi_supplicant_default))
(typeattribute adbd_26_0)
(roletype object_r adbd_26_0)
+(typeattribute policy_service_26_0)
+(roletype object_r policy_service_26_0)
(typeattribute audioserver_26_0)
(roletype object_r audioserver_26_0)
(typeattribute blkid_26_0)
Index: system/sepolicy/prebuilts/api/27.0/nonplat_sepolicy.cil
===================================================================
--- system/sepolicy/prebuilts/api/27.0/nonplat_sepolicy.cil (revision 221)
+++ system/sepolicy/prebuilts/api/27.0/nonplat_sepolicy.cil (working copy)
@@ -267,6 +267,8 @@
(typeattributeset hal_wifi_supplicant_server (hal_wifi_supplicant_default))
(typeattribute adbd_27_0)
(roletype object_r adbd_27_0)
+(typeattribute policy_service_26_0)
+(roletype object_r policy_service_26_0)
(typeattribute adbd_exec_27_0)
(roletype object_r adbd_exec_27_0)
(typeattribute audioserver_27_0)
Index: system/sepolicy/prebuilts/api/28.0/private/app_neverallows.te
===================================================================
--- system/sepolicy/prebuilts/api/28.0/private/app_neverallows.te (revision 221)
+++ system/sepolicy/prebuilts/api/28.0/private/app_neverallows.te (working copy)
@@ -128,7 +128,6 @@
proc_stat
proc_swaps
proc_uptime
- proc_version
proc_vmallocinfo
proc_vmstat
}:file { no_rw_file_perms no_x_file_perms };
Index: system/sepolicy/prebuilts/api/28.0/private/compat/26.0/26.0.cil
===================================================================
--- system/sepolicy/prebuilts/api/28.0/private/compat/26.0/26.0.cil (revision 221)
+++ system/sepolicy/prebuilts/api/28.0/private/compat/26.0/26.0.cil (working copy)
@@ -15,6 +15,7 @@
(type rild)
(typeattributeset accessibility_service_26_0 (accessibility_service))
+(typeattributeset policy_service_26_0 (policy_service))
(typeattributeset account_service_26_0 (account_service))
(typeattributeset activity_service_26_0 (activity_service))
(typeattributeset adbd_26_0 (adbd))
Index: system/sepolicy/prebuilts/api/28.0/private/compat/27.0/27.0.cil
===================================================================
--- system/sepolicy/prebuilts/api/28.0/private/compat/27.0/27.0.cil (revision 221)
+++ system/sepolicy/prebuilts/api/28.0/private/compat/27.0/27.0.cil (working copy)
@@ -718,6 +718,7 @@
(expandtypeattribute (zygote_exec_27_0) true)
(expandtypeattribute (zygote_socket_27_0) true)
(typeattributeset accessibility_service_27_0 (accessibility_service))
+(typeattributeset policy_service_27_0 (policy_service))
(typeattributeset account_service_27_0 (account_service))
(typeattributeset activity_service_27_0 (activity_service))
(typeattributeset adbd_27_0 (adbd))
Index: system/sepolicy/prebuilts/api/28.0/private/service_contexts
===================================================================
--- system/sepolicy/prebuilts/api/28.0/private/service_contexts (revision 221)
+++ system/sepolicy/prebuilts/api/28.0/private/service_contexts (working copy)
@@ -186,3 +186,4 @@
wifirtt u:object_r:rttmanager_service:s0
window u:object_r:window_service:s0
* u:object_r:default_android_service:s0
+policy u:object_r:policy_service:s0
Index: system/sepolicy/prebuilts/api/28.0/private/system_server.te
===================================================================
--- system/sepolicy/prebuilts/api/28.0/private/system_server.te (revision 221)
+++ system/sepolicy/prebuilts/api/28.0/private/system_server.te (working copy)
@@ -806,7 +806,7 @@
# Do not allow opening files from external storage as unsafe ejection
# could cause the kernel to kill the system_server.
neverallow system_server sdcard_type:dir { open read write };
-neverallow system_server sdcard_type:file rw_file_perms;
+# neverallow system_server sdcard_type:file rw_file_perms;
# system server should never be operating on zygote spawned app data
# files directly. Rather, they should always be passed via a
Index: system/sepolicy/prebuilts/api/28.0/public/service.te
===================================================================
--- system/sepolicy/prebuilts/api/28.0/public/service.te (revision 221)
+++ system/sepolicy/prebuilts/api/28.0/public/service.te (working copy)
@@ -32,6 +32,7 @@
type virtual_touchpad_service, service_manager_type;
type vold_service, service_manager_type;
type vr_hwc_service, service_manager_type;
+type policy_service, system_api_service, system_server_service, service_manager_type;
# system_server_services broken down
type accessibility_service, app_api_service, ephemeral_app_api_service, system_server_service, service_manager_type;
Index: system/sepolicy/private/app_neverallows.te
===================================================================
--- system/sepolicy/private/app_neverallows.te (revision 221)
+++ system/sepolicy/private/app_neverallows.te (working copy)
@@ -128,7 +128,6 @@
proc_stat
proc_swaps
proc_uptime
- proc_version
proc_vmallocinfo
proc_vmstat
}:file { no_rw_file_perms no_x_file_perms };
Index: system/sepolicy/private/compat/26.0/26.0.cil
===================================================================
--- system/sepolicy/private/compat/26.0/26.0.cil (revision 221)
+++ system/sepolicy/private/compat/26.0/26.0.cil (working copy)
@@ -15,6 +15,7 @@
(type rild)
(typeattributeset accessibility_service_26_0 (accessibility_service))
+(typeattributeset policy_service_26_0 (policy_service))
(typeattributeset account_service_26_0 (account_service))
(typeattributeset activity_service_26_0 (activity_service))
(typeattributeset adbd_26_0 (adbd))
Index: system/sepolicy/private/compat/27.0/27.0.cil
===================================================================
--- system/sepolicy/private/compat/27.0/27.0.cil (revision 221)
+++ system/sepolicy/private/compat/27.0/27.0.cil (working copy)
@@ -718,6 +718,7 @@
(expandtypeattribute (zygote_exec_27_0) true)
(expandtypeattribute (zygote_socket_27_0) true)
(typeattributeset accessibility_service_27_0 (accessibility_service))
+(typeattributeset policy_service_27_0 (policy_service))
(typeattributeset account_service_27_0 (account_service))
(typeattributeset activity_service_27_0 (activity_service))
(typeattributeset adbd_27_0 (adbd))
Index: system/sepolicy/private/service_contexts
===================================================================
--- system/sepolicy/private/service_contexts (revision 221)
+++ system/sepolicy/private/service_contexts (working copy)
@@ -186,3 +186,4 @@
wifirtt u:object_r:rttmanager_service:s0
window u:object_r:window_service:s0
* u:object_r:default_android_service:s0
+policy u:object_r:policy_service:s0
Index: system/sepolicy/private/system_server.te
===================================================================
--- system/sepolicy/private/system_server.te (revision 221)
+++ system/sepolicy/private/system_server.te (working copy)
@@ -806,7 +806,7 @@
# Do not allow opening files from external storage as unsafe ejection
# could cause the kernel to kill the system_server.
neverallow system_server sdcard_type:dir { open read write };
-neverallow system_server sdcard_type:file rw_file_perms;
+# neverallow system_server sdcard_type:file rw_file_perms;
# system server should never be operating on zygote spawned app data
# files directly. Rather, they should always be passed via a
Index: system/sepolicy/public/service.te
===================================================================
--- system/sepolicy/public/service.te (revision 221)
+++ system/sepolicy/public/service.te (working copy)
@@ -32,6 +32,7 @@
type virtual_touchpad_service, service_manager_type;
type vold_service, service_manager_type;
type vr_hwc_service, service_manager_type;
+type policy_service, system_api_service, system_server_service, service_manager_type;
# system_server_services broken down
type accessibility_service, app_api_service, ephemeral_app_api_service, system_server_service, service_manager_type;
这样就行了，烧录重新开机使用adb shell service list可以看到添加的service
policy: [android.app.IPolicyManager]
在\out\target\common\obj\JAVA_LIBRARIES\policy_intermediates找到classes.jar，这就是提供给客户用的jar
具体的禁止和卸载方法如下：
禁止安装可以修改PackageManagerService.java，在handleStartCopy方法中添加下面的代码
public void handleStartCopy() throws RemoteException {
int ret = PackageManager.INSTALL_SUCCEEDED;
// If we're already staged, we've firmly committed to an install location
if (origin.staged) {
if (origin.file != null) {
installFlags |= PackageManager.INSTALL_INTERNAL;
installFlags &= ~PackageManager.INSTALL_EXTERNAL;
} else {
throw new IllegalStateException("Invalid stage location");
}
}
final boolean onSd = (installFlags & PackageManager.INSTALL_EXTERNAL) != 0;
final boolean onInt = (installFlags & PackageManager.INSTALL_INTERNAL) != 0;
final boolean ephemeral = (installFlags & PackageManager.INSTALL_INSTANT_APP) != 0;
PackageInfoLite pkgLite = null;
if (onInt && onSd) {
// Check if both bits are set.
Slog.w(TAG, "Conflicting flags specified for installing on both internal and external");
ret = PackageManager.INSTALL_FAILED_INVALID_INSTALL_LOCATION;
} else if (onSd && ephemeral) {
Slog.w(TAG, "Conflicting flags specified for installing ephemeral on external");
ret = PackageManager.INSTALL_FAILED_INVALID_INSTALL_LOCATION;
} else {
pkgLite = mContainerService.getMinimalPackageInfo(origin.resolvedPath, installFlags,
packageAbiOverride);
//add by jueme
PolicyManager policyManager = (PolicyManager)mContext.getSystemService("policy");
String[] appNames = policyManager.getAppInstallationPolicies();
if(appNames!=null && appNames.length>0){
int app_status = android.provider.Settings.System.getInt(mContext.getContentResolver(),"customer_app_status", -1);
Slog.w(TAG,"app_status "+app_status);
if(app_status==0){
for (int i = 0; i < appNames.length; i++) {
Slog.w(TAG,"appNames 0 "+appNames[i]);
if (pkgLite.packageName.equals(appNames[i])){
ret = PackageManager.INSTALL_FAILED_INVALID_INSTALL_LOCATION;
break;
}
}
}else if(app_status==1){
for (int i = 0; i < appNames.length; i++) {
Slog.w(TAG,"appNames 1 "+appNames[i]);
if (pkgLite.packageName.equals(appNames[i])){
ret = PackageManager.INSTALL_SUCCEEDED;
break;
}else{
ret = PackageManager.INSTALL_FAILED_INVALID_INSTALL_LOCATION;
}
}
}
}
//add end
这样在安装时候就会报安装位置不对的信息。
接着是禁止卸载，在PackageInstallerService.java的uninstall添加下面的方法。
@Override
public void uninstall(VersionedPackage versionedPackage, String callerPackageName, int flags,
IntentSender statusReceiver, int userId) throws RemoteException {
//add by jueme
PolicyManager policyManager = (PolicyManager)mContext.getSystemService("policy");
String[] appNames = policyManager.getAppUninstallationPolicies();
if(appNames!=null && appNames.length>0){
int appuninstall_status = android.provider.Settings.System.getInt(mContext.getContentResolver(),"customer_appuninstall_status", -1);
Slog.w(TAG,"appuninstall_status "+appuninstall_status+" mInstallerPackageName "+versionedPackage.getPackageName());
boolean isUninstall = true;//默认都是可卸载
if(appuninstall_status==0){
for (int i = 0; i < appNames.length; i++) {
if (versionedPackage.getPackageName().equals(appNames[i])){
isUninstall = true;
break;
}else{
isUninstall = false;
}
}
if(!isUninstall){
return;
}
}else if(appuninstall_status==1){
//应用包名列表中的所有项禁止卸载
for (int i = 0; i < appNames.length; i++) {
if (versionedPackage.getPackageName().equals(appNames[i])){
isUninstall = false;
break;
}else{
isUninstall = true;
}
}
if(!isUninstall){
return;
}
}
}
//add end
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