Define a new activity that lists permissions and apps using that permission with some additional details as well

First pass.

apps/Development/AndroidManifest.xml

@@ -131,5 +131,11 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
     </activity>
+    <activity android:name="PermissionDetails" android:label="Permission Info">
+            <intent-filter>
+                <action android:name="com.android.development.VIEW_PERMISSION" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+    </activity>
     </application>
 </manifest>

apps/Development/res/layout/permission_details.xml

@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2007 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.
+-->
+
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:fillViewport="true"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent">
+
+    <LinearLayout android:orientation="vertical"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:padding="4dip" >
+
+        <LinearLayout android:orientation="horizontal"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="4dip" >
+            <TextView android:id="@+id/perm_name_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/perm_name_text"
+                android:textStyle="bold" />
+            <TextView android:id="@+id/perm_name"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"/>
+        </LinearLayout>
+
+        <LinearLayout android:orientation="horizontal"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="4dip" >
+            <TextView android:id="@+id/perm_desc_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/perm_desc_text"
+                android:textStyle="bold" />
+            <TextView android:id="@+id/perm_desc"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"/>
+        </LinearLayout>
+
+        <LinearLayout android:orientation="horizontal"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="4dip" >
+            <TextView android:id="@+id/perm_group_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/perm_group_text"
+                android:textStyle="bold" />
+            <TextView android:id="@+id/perm_group"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"/>
+        </LinearLayout>
+
+        <LinearLayout android:orientation="horizontal"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="4dip" >
+            <TextView android:id="@+id/perm_protection_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/perm_protection_text"
+                android:textStyle="bold" />
+            <TextView android:id="@+id/perm_protection"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"/>
+        </LinearLayout>
+
+        <LinearLayout android:orientation="horizontal"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="4dip" >
+            <TextView android:id="@+id/perm_source_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/perm_source_text"
+                android:textStyle="bold" />
+            <TextView android:id="@+id/perm_source"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"/>
+        </LinearLayout>
+
+        <LinearLayout android:orientation="horizontal"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="4dip" >
+            <TextView android:id="@+id/source_uid_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/source_uid_text"
+                android:textStyle="bold" />
+            <TextView android:id="@+id/source_uid"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"/>
+        </LinearLayout>
+        <LinearLayout android:id="@+id/shared_pkgs_panel"
+            android:orientation="vertical"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="4dip" >
+            <TextView android:id="@+id/shared_pkgs_label"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/shared_pkgs_text"
+                android:textStyle="bold" />
+            <TextView android:id="@+id/shared_pkgs"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"/>
+        </LinearLayout>
+        <TextView android:id="@+id/perm_list_header"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:paddingBottom="3dip"
+            android:text="@string/perm_list_header_text"
+            android:textStyle="bold" />
+        <ListView android:id="@android:id/list"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"/>
+        </LinearLayout>
+</ScrollView>
+

apps/Development/res/layout/pkg_list_item.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2008, 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.
+*/
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="?android:attr/listPreferredItemHeight"
+    android:orientation="horizontal"
+    android:paddingRight="6dip"
+    android:paddingLeft="6dip"
+    android:paddingTop="5dip"
+    android:paddingBottom="5dip"
+    android:gravity="center_vertical" >
+    <TextView android:id="@+id/pkg_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textAppearance="?android:attr/textAppearanceSmall"
+        android:textStyle="bold"
+        android:singleLine="true"
+        android:ellipsize="marquee"
+        android:layout_marginBottom="2dip" />
+</LinearLayout>
+

apps/Development/res/values/strings.xml

@@ -120,4 +120,17 @@
     <string name="navigation_label">navigation:</string>
     <string name="five_way_nav_label">five way nav:</string>
     <string name="gles_version_label">GLES Version:</string>
+
+    <!-- Permission details related string attribtues -->
+    <string name="perm_name_text">Name :  </string>
+    <string name="dialog_title_error">Error</string>
+    <string name="invalid_perm_name">Invalid Permission Name</string>
+    <string name="ok">Ok</string>
+    <string name="perm_desc_text">Desc :  </string>
+    <string name="perm_group_text">Group :  </string>
+    <string name="perm_protection_text">Protection Level :  </string>
+    <string name="perm_source_text">Source package :  </string>
+    <string name="perm_list_header_text">Apps using permission  </string>
+    <string name="source_uid_text">Source uid :  </string>
+    <string name="shared_pkgs_text">Packages accessing via shared uid :  </string>
 </resources>

apps/Development/src/com/android/development/PermissionDetails.java

@@ -0,0 +1,305 @@
+/*
+**
+** Copyright 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.development;
+
+import com.android.development.R;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.DialogInterface.OnCancelListener;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PermissionInfo;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.ListView;
+import android.widget.TextView;
+import android.widget.AdapterView.OnItemClickListener;
+
+/**
+ * This activity displays permission details including
+ * the list of apps using a permission.
+ */
+public class PermissionDetails extends Activity implements OnCancelListener, OnItemClickListener {
+    private static final String TAG = "PermissionDetails";
+    PackageManager mPm;
+    // layout inflater object used to inflate views
+    private LayoutInflater mInflater;
+    private AppListAdapter mAdapter;
+
+    // Dialog related
+    private static final int DLG_BASE = 0;
+    private static final int DLG_ERROR = DLG_BASE + 1;
+    private static final String PROTECTION_NORMAL="Normal";
+    private static final String PROTECTION_DANGEROUS="Dangerous";
+    private static final String PROTECTION_SIGNATURE="Signature";
+    private static final String PROTECTION_SIGNATURE_OR_SYSTEM="SignatureOrSystem";
+
+    private static final String KEY_APPS_USING_PERM="AppsUsingPerm";
+
+    private static final int HANDLER_MSG_BASE = 0;
+    private static final int HANDLER_MSG_GET_APPS = HANDLER_MSG_BASE + 1;
+    private Handler mHandler = new Handler() {
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+            case HANDLER_MSG_GET_APPS:
+                ArrayList<PackageInfo> appList = msg.getData().getParcelableArrayList(KEY_APPS_USING_PERM);
+                createAppList(appList);
+                break;
+            }
+        }
+    };
+
+    // View Holder used when displaying views
+    static class AppViewHolder {
+        TextView pkgName;
+    }
+
+    class AppListAdapter extends BaseAdapter {
+        private List<PackageInfo> mList;
+
+        AppListAdapter(List<PackageInfo> list) {
+            mList = list;
+        }
+
+        public int getCount() {
+            return mList.size();
+        }
+
+        public Object getItem(int position) {
+            return mList.get(position);
+        }
+
+        public long getItemId(int position) {
+            return position;
+        }
+
+        public PackageInfo getPkg(int position) {
+            return mList.get(position);
+        }
+
+        public View getView(int position, View convertView, ViewGroup parent) {
+            // A ViewHolder keeps references to children views to avoid unneccessary calls
+            // to findViewById() on each row.
+            AppViewHolder holder;
+
+            // When convertView is not null, we can reuse it directly, there is no need
+            // to reinflate it. We only inflate a new View when the convertView supplied
+            // by ListView is null.
+            if (convertView == null) {
+                convertView = mInflater.inflate(R.layout.pkg_list_item, null);
+
+                // Creates a ViewHolder and store references to the two children views
+                // we want to bind data to.
+                holder = new AppViewHolder();
+                holder.pkgName = (TextView) convertView.findViewById(R.id.pkg_name);
+                convertView.setTag(holder);
+            } else {
+                // Get the ViewHolder back to get fast access to the TextView
+                // and the ImageView.
+                holder = (AppViewHolder) convertView.getTag();
+            }
+            // Bind the data efficiently with the holder
+            PackageInfo pInfo = mList.get(position);
+            holder.pkgName.setText(pInfo.packageName);
+            return convertView;
+        }
+    }
+
+    private void createAppList(List<PackageInfo> list) {
+        Log.i(TAG, "list.size=" + list.size());
+        for (PackageInfo pkg : list) {
+            Log.i(TAG, "Adding pkg : " +  pkg.packageName);
+        }
+        ListView listView = (ListView)findViewById(android.R.id.list);
+        mAdapter = new AppListAdapter(list);
+        ListView lv= (ListView) findViewById(android.R.id.list);
+        lv.setOnItemClickListener(this);
+        lv.setSaveEnabled(true);
+        lv.setItemsCanFocus(true);
+        listView.setAdapter(mAdapter);
+    }
+
+    private  void getAppsUsingPerm(PermissionInfo pInfo) {
+        List<PackageInfo> list = mPm.getInstalledPackages(PackageManager.GET_PERMISSIONS);
+        HashSet<PackageInfo> set = new HashSet<PackageInfo>();
+        for (PackageInfo pkg : list) {
+            if (pkg.requestedPermissions == null) {
+                continue;
+            }
+            for (String perm : pkg.requestedPermissions) {
+                if (perm.equalsIgnoreCase(pInfo.name)) {
+                    Log.i(TAG, "Pkg:" + pkg.packageName+" uses permission");
+                    set.add(pkg);
+                    break;
+                }
+            }
+        }
+        ArrayList<PackageInfo> retList = new ArrayList<PackageInfo>();
+        for (PackageInfo pkg : set) {
+            retList.add(pkg);
+        }
+        Message msg = mHandler.obtainMessage(HANDLER_MSG_GET_APPS);
+        Bundle data = msg.getData();
+        data.putParcelableArrayList(KEY_APPS_USING_PERM, retList);
+        mHandler.dispatchMessage(msg);
+    }
+
+    @Override
+    protected void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        setContentView(R.layout.permission_details);
+        Intent intent = getIntent();
+        String permName = intent.getStringExtra("permission");
+        if(permName == null) {
+            showDialogInner(DLG_ERROR);
+        }
+        mPm = getPackageManager();
+        mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        PermissionInfo pInfo = null;
+        try {
+            pInfo = mPm.getPermissionInfo(permName,
+                PackageManager.GET_PERMISSIONS);
+        } catch (NameNotFoundException e) {
+            showDialogInner(DLG_ERROR);
+        }
+        setTextView(R.id.perm_name, pInfo.name);
+        setTextView(R.id.perm_desc, pInfo.descriptionRes);
+        setTextView(R.id.perm_group, pInfo.group);
+        setProtectionLevel(R.id.perm_protection, pInfo.protectionLevel);
+        setTextView(R.id.perm_source, pInfo.packageName);
+        ApplicationInfo appInfo = null;
+        try {
+            appInfo =  mPm.getApplicationInfo(pInfo.packageName, 0);
+            String uidStr = mPm.getNameForUid(appInfo.uid);
+            setTextView(R.id.source_uid, uidStr);
+        } catch (NameNotFoundException e) {
+        }
+        boolean sharedVisibility = false;
+        // List of apps acquiring access via shared user id
+        LinearLayout sharedPanel = (LinearLayout) findViewById(R.id.shared_pkgs_panel);
+        if (appInfo != null) {
+            String[] sharedList = mPm.getPackagesForUid(appInfo.uid);
+            if ((sharedList != null) && (sharedList.length > 1)) {
+                sharedVisibility = true;
+                TextView label = (TextView) sharedPanel.findViewById(R.id.shared_pkgs_label);
+                TextView sharedView = (TextView) sharedPanel.findViewById(R.id.shared_pkgs);
+                label.setVisibility(View.VISIBLE);
+                StringBuilder buff = new StringBuilder();
+                buff.append(sharedList[0]);
+                for (int i = 1; i < sharedList.length; i++) {
+                    buff.append(", ");
+                    buff.append(sharedList[i]);
+                }
+                sharedView.setText(buff.toString());
+            }
+        }
+        if (sharedVisibility) {
+            sharedPanel.setVisibility(View.VISIBLE);
+        } else {
+            sharedPanel.setVisibility(View.GONE);
+        }
+        getAppsUsingPerm(pInfo);
+    }
+
+    private void setProtectionLevel(int viewId, int protectionLevel) {
+        String levelStr = "";
+        if (protectionLevel == PermissionInfo.PROTECTION_NORMAL) {
+            levelStr = PROTECTION_NORMAL;
+        } else if (protectionLevel == PermissionInfo.PROTECTION_DANGEROUS) {
+            levelStr = PROTECTION_DANGEROUS;
+        } else if (protectionLevel == PermissionInfo.PROTECTION_SIGNATURE) {
+            levelStr = PROTECTION_SIGNATURE;
+        } else if (protectionLevel == PermissionInfo.PROTECTION_SIGNATURE_OR_SYSTEM) {
+            levelStr = PROTECTION_SIGNATURE_OR_SYSTEM;
+        } else {
+            levelStr = "Invalid";
+        }
+        setTextView(viewId, levelStr);
+    }
+
+    private void setTextView(int viewId, int textId) {
+        TextView view = (TextView)findViewById(viewId);
+        view.setText(textId);
+    }
+
+    private void setTextView(int viewId, String text) {
+        TextView view = (TextView)findViewById(viewId);
+        view.setText(text);
+    }
+
+    @Override
+    public Dialog onCreateDialog(int id) {
+        if (id == DLG_ERROR) {
+            return new AlertDialog.Builder(this)
+            .setTitle(R.string.dialog_title_error)
+            .setNeutralButton(R.string.ok, new DialogInterface.OnClickListener() {
+                public void onClick(DialogInterface dialog, int which) {
+                    finish();
+                }})
+            .setMessage(R.string.invalid_perm_name)
+            .setOnCancelListener(this)
+            .create();
+        }
+        return null;
+    }
+
+    private void showDialogInner(int id) {
+        // TODO better fix for this? Remove dialog so that it gets created again
+        removeDialog(id);
+        showDialog(id);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+    }
+
+    public void onCancel(DialogInterface dialog) {
+        finish();
+    }
+
+    public void onItemClick(AdapterView<?> parent, View view, int position,
+            long id) {
+        // TODO Launch app details activity
+    }
+}