Add new READ_EXTERNAL_STORAGE permission.

Also adds some initial compatibility code for dealing with it.

Change-Id: I104bff11798349e4aaa6da9b7be787b257daa1bb

3 files changed, 59 insertions, 2 deletions

diff --git a/core/java/android/content/pm/PackageParser.java b/core/java/android/content/pm/PackageParser.java
index e88ee02..207f077 100644
--- a/core/java/android/content/pm/PackageParser.java
+++ b/core/java/android/content/pm/PackageParser.java
@@ -89,11 +89,25 @@ public class PackageParser {
             this.fileVersion = fileVersion;
         }
     }
-    
+
+    /** @hide */
+    public static class SplitPermissionInfo {
+        public final String rootPerm;
+        public final String[] newPerms;
+
+        public SplitPermissionInfo(String rootPerm, String[] newPerms) {
+            this.rootPerm = rootPerm;
+            this.newPerms = newPerms;
+        }
+    }
+
     /**
      * List of new permissions that have been added since 1.0.
      * NOTE: These must be declared in SDK version order, with permissions
      * added to older SDKs appearing before those added to newer SDKs.
+     * If sdkVersion is 0, then this is not a permission that we want to
+     * automatically add to older apps, but we do want to allow it to be
+     * granted during a platform update.
      * @hide
      */
     public static final PackageParser.NewPermissionInfo NEW_PERMISSIONS[] =
@@ -104,6 +118,17 @@ public class PackageParser {
                     android.os.Build.VERSION_CODES.DONUT, 0)
     };
 
+    /**
+     * List of permissions that have been split into more granular or dependent
+     * permissions.
+     * @hide
+     */
+    public static final PackageParser.SplitPermissionInfo SPLIT_PERMISSIONS[] =
+        new PackageParser.SplitPermissionInfo[] {
+            new PackageParser.SplitPermissionInfo(android.Manifest.permission.WRITE_EXTERNAL_STORAGE,
+                    new String[] { android.Manifest.permission.READ_EXTERNAL_STORAGE })
+    };
+
     private String mArchiveSourcePath;
     private String[] mSeparateProcesses;
     private boolean mOnlyCoreApps;
@@ -1245,7 +1270,23 @@ public class PackageParser {
         if (implicitPerms != null) {
             Slog.i(TAG, implicitPerms.toString());
         }
-        
+
+        final int NS = PackageParser.SPLIT_PERMISSIONS.length;
+        for (int is=0; is<NS; is++) {
+            final PackageParser.SplitPermissionInfo spi
+                    = PackageParser.SPLIT_PERMISSIONS[is];
+            if (!pkg.requestedPermissions.contains(spi.rootPerm)) {
+                break;
+            }
+            for (int in=0; in<spi.newPerms.length; in++) {
+                final String perm = spi.newPerms[in];
+                if (!pkg.requestedPermissions.contains(perm)) {
+                    pkg.requestedPermissions.add(perm);
+                    pkg.requestedPermissionsRequired.add(Boolean.TRUE);
+                }
+            }
+        }
+
         if (supportsSmallScreens < 0 || (supportsSmallScreens > 0
                 && pkg.applicationInfo.targetSdkVersion
                         >= android.os.Build.VERSION_CODES.DONUT)) {
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 17d2212..8f03fe0 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -639,6 +639,13 @@
         android:label="@string/permgrouplab_storage"
         android:description="@string/permgroupdesc_storage" />
 
+    <!-- Allows an application to read from external storage -->
+    <permission android:name="android.permission.READ_EXTERNAL_STORAGE"
+        android:permissionGroup="android.permission-group.STORAGE"
+        android:label="@string/permlab_sdcardRead"
+        android:description="@string/permdesc_sdcardRead"
+        android:protectionLevel="dangerous" />
+
     <!-- Allows an application to write to external storage -->
     <permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
         android:permissionGroup="android.permission-group.STORAGE"
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index c8df649..7137b7c 100755
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -1429,6 +1429,15 @@
       user dictionary.</string>
 
     <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. [CHAR LIMIT=30] -->
+    <string name="permlab_sdcardRead" product="nosdcard">read USB storage contents</string>
+    <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
+    <string name="permlab_sdcardRead" product="default">read SD card contents</string>
+    <!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. [CHAR LIMIT=30] -->
+    <string name="permdesc_sdcardRead" product="nosdcard">Allows the app to read contents of USB storage.</string>
+    <!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
+    <string name="permdesc_sdcardRead" product="default">Allows the app to read contents of SD card.</string>
+
+    <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. [CHAR LIMIT=30] -->
     <string name="permlab_sdcardWrite" product="nosdcard">modify/delete USB storage contents</string>
     <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
     <string name="permlab_sdcardWrite" product="default">modify/delete SD card contents</string>