Implement compatibility support for WRITE_SDCARD permission.

Now old applications will automatically be granted it.  Also renamed it from
SDCARD_WRITE to WRITE_SDCARD to be consistent with our other permissions,
and re-arranged how we do targetSdkVersion to actually be usuable for this
kind of stuff.

Note that right now this results in basically all apps being given the
WRITE_SDCARD permission, because their targetSdkVersion is not set.  I will
be dealing with that in a future change.

2 files changed, 56 insertions, 16 deletions

diff --git a/core/java/android/content/pm/ApplicationInfo.java b/core/java/android/content/pm/ApplicationInfo.java
index 88ac04c..ad022e7 100644
--- a/core/java/android/content/pm/ApplicationInfo.java
+++ b/core/java/android/content/pm/ApplicationInfo.java
@@ -123,13 +123,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
      * Value for {@link #flags}: this is set of the application has set
      * its android:targetSdkVersion to something >= the current SDK version.
      */
-    public static final int FLAG_TARGETS_SDK = 1<<8;
-
-    /**
-     * Value for {@link #flags}: this is set of the application has set
-     * its android:targetSdkVersion to something >= the current SDK version.
-     */
-    public static final int FLAG_TEST_ONLY = 1<<9;
+    public static final int FLAG_TEST_ONLY = 1<<8;
 
     /**
      * Flags associated with the application.  Any combination of
@@ -137,7 +131,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
      * {@link #FLAG_PERSISTENT}, {@link #FLAG_FACTORY_TEST}, and
      * {@link #FLAG_ALLOW_TASK_REPARENTING}
      * {@link #FLAG_ALLOW_CLEAR_USER_DATA}, {@link #FLAG_UPDATED_SYSTEM_APP},
-     * {@link #FLAG_TARGETS_SDK}.
+     * {@link #FLAG_TEST_ONLY}.
      */
     public int flags = 0;
     
@@ -182,6 +176,16 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
     public int[] supportsDensities;
 
     /**
+     * The minimum SDK version this application targets.  It may run on earilier
+     * versions, but it knows how to work with any new behavior added at this
+     * version.  Will be {@link android.os.Build.VERSION_CODES#CUR_DEVELOPMENT}
+     * if this is a development build and the app is targeting that.  You should
+     * compare that this number is >= the SDK version number at which your
+     * behavior was introduced.
+     */
+    public int targetSdkVersion;
+    
+    /**
      * When false, indicates that all components within this application are
      * considered disabled, regardless of their individually set enabled status.
      */
@@ -200,6 +204,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         pw.println(prefix + "publicSourceDir=" + publicSourceDir);
         pw.println(prefix + "sharedLibraryFiles=" + sharedLibraryFiles);
         pw.println(prefix + "dataDir=" + dataDir);
+        pw.println(prefix + "targetSdkVersion=" + targetSdkVersion);
         pw.println(prefix + "enabled=" + enabled);
         pw.println(prefix + "manageSpaceActivityName="+manageSpaceActivityName);
         pw.println(prefix + "description=0x"+Integer.toHexString(descriptionRes));
@@ -246,6 +251,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         sharedLibraryFiles = orig.sharedLibraryFiles;
         dataDir = orig.dataDir;
         uid = orig.uid;
+        targetSdkVersion = orig.targetSdkVersion;
         enabled = orig.enabled;
         manageSpaceActivityName = orig.manageSpaceActivityName;
         descriptionRes = orig.descriptionRes;
@@ -276,6 +282,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         dest.writeStringArray(sharedLibraryFiles);
         dest.writeString(dataDir);
         dest.writeInt(uid);
+        dest.writeInt(targetSdkVersion);
         dest.writeInt(enabled ? 1 : 0);
         dest.writeString(manageSpaceActivityName);
         dest.writeInt(descriptionRes);
@@ -305,6 +312,7 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         sharedLibraryFiles = source.readStringArray();
         dataDir = source.readString();
         uid = source.readInt();
+        targetSdkVersion = source.readInt();
         enabled = source.readInt() != 0;
         manageSpaceActivityName = source.readString();
         descriptionRes = source.readInt();
diff --git a/core/java/android/content/pm/PackageParser.java b/core/java/android/content/pm/PackageParser.java
index 88907c1..78462f1 100644
--- a/core/java/android/content/pm/PackageParser.java
+++ b/core/java/android/content/pm/PackageParser.java
@@ -55,6 +55,30 @@ import java.util.jar.JarFile;
  * {@hide}
  */
 public class PackageParser {
+    /** @hide */
+    public static class NewPermissionInfo {
+        public final String name;
+        public final int sdkVersion;
+        public final int fileVersion;
+        
+        public NewPermissionInfo(String name, int sdkVersion, int fileVersion) {
+            this.name = name;
+            this.sdkVersion = sdkVersion;
+            this.fileVersion = fileVersion;
+        }
+    }
+    
+    /**
+     * 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.
+     * @hide
+     */
+    public static final PackageParser.NewPermissionInfo NEW_PERMISSIONS[] = new PackageParser.NewPermissionInfo[] {
+        new PackageParser.NewPermissionInfo(android.Manifest.permission.WRITE_SDCARD,
+                android.os.Build.VERSION_CODES.DONUT,
+                0)
+    };
 
     private String mArchiveSourcePath;
     private String[] mSeparateProcesses;
@@ -616,7 +640,6 @@ public class PackageParser {
 
         final Package pkg = new Package(pkgName);
         boolean foundApp = false;
-        boolean targetsSdk = false;
         
         TypedArray sa = res.obtainAttributes(attrs,
                 com.android.internal.R.styleable.AndroidManifest);
@@ -774,11 +797,10 @@ public class PackageParser {
                             return null;
                         }
                         // If the code matches, it definitely targets this SDK.
-                        targetsSdk = true;
-                    } else if (targetVers >= mSdkVersion) {
-                        // If they have explicitly targeted our current version
-                        // or something after it, then note this.
-                        targetsSdk = true;
+                        pkg.applicationInfo.targetSdkVersion
+                                = android.os.Build.VERSION_CODES.CUR_DEVELOPMENT;
+                    } else {
+                        pkg.applicationInfo.targetSdkVersion = targetVers;
                     }
                     
                     if (minVers > mSdkVersion) {
@@ -824,8 +846,18 @@ public class PackageParser {
             mParseError = PackageManager.INSTALL_PARSE_FAILED_MANIFEST_EMPTY;
         }
 
-        if (targetsSdk) {
-            pkg.applicationInfo.flags |= ApplicationInfo.FLAG_TARGETS_SDK;
+        final int NP = PackageParser.NEW_PERMISSIONS.length;
+        for (int ip=0; ip<NP; ip++) {
+            final PackageParser.NewPermissionInfo npi
+                    = PackageParser.NEW_PERMISSIONS[ip];
+            if (pkg.applicationInfo.targetSdkVersion >= npi.sdkVersion) {
+                break;
+            }
+            if (!pkg.requestedPermissions.contains(npi.name)) {
+                Log.i(TAG, "Impliciting adding " + npi.name + " to old pkg "
+                        + pkg.packageName);
+                pkg.requestedPermissions.add(npi.name);
+            }
         }
         
         if (pkg.usesLibraries.size() > 0) {