Fix 2673731: Adding support for password history to Device Admin.
Change-Id: If3240048813e32b2bae79fe5cb8a73aea20ec56c
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index 35e7ee6..67992a4 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -46,7 +46,7 @@
private final Context mContext;
private final IDevicePolicyManager mService;
-
+
private final Handler mHandler;
private DevicePolicyManager(Context context, Handler handler) {
@@ -61,14 +61,14 @@
DevicePolicyManager me = new DevicePolicyManager(context, handler);
return me.mService != null ? me : null;
}
-
+
/**
* Activity action: ask the user to add a new device administrator to the system.
* The desired policy is the ComponentName of the policy in the
* {@link #EXTRA_DEVICE_ADMIN} extra field. This will invoke a UI to
* bring the user through adding the device administrator to the system (or
* allowing them to reject it).
- *
+ *
* <p>You can optionally include the {@link #EXTRA_ADD_EXPLANATION}
* field to provide the user with additional explanation (in addition
* to your component's description) about what is being added.
@@ -76,14 +76,14 @@
@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
public static final String ACTION_ADD_DEVICE_ADMIN
= "android.app.action.ADD_DEVICE_ADMIN";
-
+
/**
* The ComponentName of the administrator component.
*
* @see #ACTION_ADD_DEVICE_ADMIN
*/
public static final String EXTRA_DEVICE_ADMIN = "android.app.extra.DEVICE_ADMIN";
-
+
/**
* An optional CharSequence providing additional explanation for why the
* admin is being added.
@@ -91,22 +91,21 @@
* @see #ACTION_ADD_DEVICE_ADMIN
*/
public static final String EXTRA_ADD_EXPLANATION = "android.app.extra.ADD_EXPLANATION";
-
+
/**
- * Activity action: have the user enter a new password. This activity
- * should be launched after using {@link #setPasswordQuality(ComponentName, int)}
- * or {@link #setPasswordMinimumLength(ComponentName, int)} to have the
- * user enter a new password that meets the current requirements. You can
- * use {@link #isActivePasswordSufficient()} to determine whether you need
- * to have the user select a new password in order to meet the current
- * constraints. Upon being resumed from this activity,
- * you can check the new password characteristics to see if they are
- * sufficient.
+ * Activity action: have the user enter a new password. This activity should
+ * be launched after using {@link #setPasswordQuality(ComponentName, int)},
+ * or {@link #setPasswordMinimumLength(ComponentName, int)} to have the user
+ * enter a new password that meets the current requirements. You can use
+ * {@link #isActivePasswordSufficient()} to determine whether you need to
+ * have the user select a new password in order to meet the current
+ * constraints. Upon being resumed from this activity, you can check the new
+ * password characteristics to see if they are sufficient.
*/
@SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
public static final String ACTION_SET_NEW_PASSWORD
= "android.app.action.SET_NEW_PASSWORD";
-
+
/**
* Return true if the given administrator component is currently
* active (enabled) in the system.
@@ -121,7 +120,7 @@
}
return false;
}
-
+
/**
* Return a list of all currently active device administrator's component
* names. Note that if there are no administrators than null may be
@@ -137,7 +136,7 @@
}
return null;
}
-
+
/**
* @hide
*/
@@ -151,7 +150,7 @@
}
return false;
}
-
+
/**
* Remove a current administration component. This can only be called
* by the application that owns the administration component; if you
@@ -167,28 +166,28 @@
}
}
}
-
+
/**
* Constant for {@link #setPasswordQuality}: the policy has no requirements
* for the password. Note that quality constants are ordered so that higher
* values are more restrictive.
*/
public static final int PASSWORD_QUALITY_UNSPECIFIED = 0;
-
+
/**
* Constant for {@link #setPasswordQuality}: the policy requires some kind
* of password, but doesn't care what it is. Note that quality constants
* are ordered so that higher values are more restrictive.
*/
public static final int PASSWORD_QUALITY_SOMETHING = 0x10000;
-
+
/**
* Constant for {@link #setPasswordQuality}: the user must have entered a
* password containing at least numeric characters. Note that quality
* constants are ordered so that higher values are more restrictive.
*/
public static final int PASSWORD_QUALITY_NUMERIC = 0x20000;
-
+
/**
* Constant for {@link #setPasswordQuality}: the user must have entered a
* password containing at least alphabetic (or other symbol) characters.
@@ -196,7 +195,7 @@
* restrictive.
*/
public static final int PASSWORD_QUALITY_ALPHABETIC = 0x40000;
-
+
/**
* Constant for {@link #setPasswordQuality}: the user must have entered a
* password containing at least <em>both></em> numeric <em>and</em>
@@ -204,7 +203,7 @@
* ordered so that higher values are more restrictive.
*/
public static final int PASSWORD_QUALITY_ALPHANUMERIC = 0x50000;
-
+
/**
* Called by an application that is administering the device to set the
* password restrictions it is imposing. After setting this, the user
@@ -213,16 +212,16 @@
* will remain until the user has set a new one, so the change does not
* take place immediately. To prompt the user for a new password, use
* {@link #ACTION_SET_NEW_PASSWORD} after setting this value.
- *
+ *
* <p>Quality constants are ordered so that higher values are more restrictive;
* thus the highest requested quality constant (between the policy set here,
* the user's preference, and any other considerations) is the one that
* is in effect.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_LIMIT_PASSWORD} to be able to call
* this method; if it has not, a security exception will be thrown.
- *
+ *
* @param admin Which {@link DeviceAdminReceiver} this request is associated with.
* @param quality The new desired quality. One of
* {@link #PASSWORD_QUALITY_UNSPECIFIED}, {@link #PASSWORD_QUALITY_SOMETHING},
@@ -238,7 +237,7 @@
}
}
}
-
+
/**
* Retrieve the current minimum password quality for all admins
* or a particular one.
@@ -255,7 +254,7 @@
}
return PASSWORD_QUALITY_UNSPECIFIED;
}
-
+
/**
* Called by an application that is administering the device to set the
* minimum allowed password length. After setting this, the user
@@ -268,11 +267,11 @@
* {@link #PASSWORD_QUALITY_NUMERIC}, {@link #PASSWORD_QUALITY_ALPHABETIC},
* or {@link #PASSWORD_QUALITY_ALPHANUMERIC}
* with {@link #setPasswordQuality}.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_LIMIT_PASSWORD} to be able to call
* this method; if it has not, a security exception will be thrown.
- *
+ *
* @param admin Which {@link DeviceAdminReceiver} this request is associated with.
* @param length The new desired minimum password length. A value of 0
* means there is no restriction.
@@ -286,7 +285,7 @@
}
}
}
-
+
/**
* Retrieve the current minimum password length for all admins
* or a particular one.
@@ -303,7 +302,57 @@
}
return 0;
}
-
+
+ /**
+ * Called by an application that is administering the device to set the length
+ * of the password history. After setting this, the user will not be able to
+ * enter a new password that is the same as any password in the history. Note
+ * that the current password will remain until the user has set a new one, so
+ * the change does not take place immediately. To prompt the user for a new
+ * password, use {@link #ACTION_SET_NEW_PASSWORD} after setting this value.
+ * This constraint is only imposed if the administrator has also requested
+ * either {@link #PASSWORD_QUALITY_NUMERIC},
+ * {@link #PASSWORD_QUALITY_ALPHABETIC}, or
+ * {@link #PASSWORD_QUALITY_ALPHANUMERIC} with {@link #setPasswordQuality}.
+ *
+ * <p>
+ * The calling device admin must have requested
+ * {@link DeviceAdminInfo#USES_POLICY_LIMIT_PASSWORD} to be able to call this
+ * method; if it has not, a security exception will be thrown.
+ *
+ * @param admin Which {@link DeviceAdminReceiver} this request is associated
+ * with.
+ * @param length The new desired length of password history. A value of 0
+ * means there is no restriction.
+ */
+ public void setPasswordHistoryLength(ComponentName admin, int length) {
+ if (mService != null) {
+ try {
+ mService.setPasswordHistoryLength(admin, length);
+ } catch (RemoteException e) {
+ Log.w(TAG, "Failed talking with device policy service", e);
+ }
+ }
+ }
+
+ /**
+ * Retrieve the current password history length for all admins
+ * or a particular one.
+ * @param admin The name of the admin component to check, or null to aggregate
+ * all admins.
+ * @return The length of the password history
+ */
+ public int getPasswordHistoryLength(ComponentName admin) {
+ if (mService != null) {
+ try {
+ return mService.getPasswordHistoryLength(admin);
+ } catch (RemoteException e) {
+ Log.w(TAG, "Failed talking with device policy service", e);
+ }
+ }
+ return 0;
+ }
+
/**
* Return the maximum password length that the device supports for a
* particular password quality.
@@ -314,16 +363,16 @@
// Kind-of arbitrary.
return 16;
}
-
+
/**
* Determine whether the current password the user has set is sufficient
* to meet the policy requirements (quality, minimum length) that have been
* requested.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_LIMIT_PASSWORD} to be able to call
* this method; if it has not, a security exception will be thrown.
- *
+ *
* @return Returns true if the password meets the current requirements,
* else false.
*/
@@ -337,11 +386,11 @@
}
return false;
}
-
+
/**
* Retrieve the number of times the user has failed at entering a
* password since that last successful password entry.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_WATCH_LOGIN} to be able to call
* this method; if it has not, a security exception will be thrown.
@@ -364,14 +413,14 @@
* watching for failed passwords and wiping the device, and requires
* that you request both {@link DeviceAdminInfo#USES_POLICY_WATCH_LOGIN} and
* {@link DeviceAdminInfo#USES_POLICY_WIPE_DATA}}.
- *
+ *
* <p>To implement any other policy (e.g. wiping data for a particular
* application only, erasing or revoking credentials, or reporting the
* failure to a server), you should implement
* {@link DeviceAdminReceiver#onPasswordFailed(Context, android.content.Intent)}
* instead. Do not use this API, because if the maximum count is reached,
* the device will be wiped immediately, and your callback will not be invoked.
- *
+ *
* @param admin Which {@link DeviceAdminReceiver} this request is associated with.
* @param num The number of failed password attempts at which point the
* device will wipe its data.
@@ -385,7 +434,7 @@
}
}
}
-
+
/**
* Retrieve the current maximum number of login attempts that are allowed
* before the device wipes itself, for all admins
@@ -403,13 +452,13 @@
}
return 0;
}
-
+
/**
* Flag for {@link #resetPassword}: don't allow other admins to change
* the password again until the user has entered it.
*/
public static final int RESET_PASSWORD_REQUIRE_ENTRY = 0x0001;
-
+
/**
* Force a new device unlock password (the password needed to access the
* entire device, not for individual accounts) on the user. This takes
@@ -422,11 +471,11 @@
* that the password may be a stronger quality (containing alphanumeric
* characters when the requested quality is only numeric), in which case
* the currently active quality will be increased to match.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_RESET_PASSWORD} to be able to call
* this method; if it has not, a security exception will be thrown.
- *
+ *
* @param password The new password for the user.
* @param flags May be 0 or {@link #RESET_PASSWORD_REQUIRE_ENTRY}.
* @return Returns true if the password was applied, or false if it is
@@ -442,16 +491,16 @@
}
return false;
}
-
+
/**
* Called by an application that is administering the device to set the
* maximum time for user activity until the device will lock. This limits
* the length that the user can set. It takes effect immediately.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_FORCE_LOCK} to be able to call
* this method; if it has not, a security exception will be thrown.
- *
+ *
* @param admin Which {@link DeviceAdminReceiver} this request is associated with.
* @param timeMs The new desired maximum time to lock in milliseconds.
* A value of 0 means there is no restriction.
@@ -465,7 +514,7 @@
}
}
}
-
+
/**
* Retrieve the current maximum time to unlock for all admins
* or a particular one.
@@ -482,11 +531,11 @@
}
return 0;
}
-
+
/**
* Make the device lock immediately, as if the lock screen timeout has
* expired at the point of this call.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_FORCE_LOCK} to be able to call
* this method; if it has not, a security exception will be thrown.
@@ -500,16 +549,16 @@
}
}
}
-
+
/**
* Ask the user date be wiped. This will cause the device to reboot,
* erasing all user data while next booting up. External storage such
* as SD cards will not be erased.
- *
+ *
* <p>The calling device admin must have requested
* {@link DeviceAdminInfo#USES_POLICY_WIPE_DATA} to be able to call
* this method; if it has not, a security exception will be thrown.
- *
+ *
* @param flags Bit mask of additional options: currently must be 0.
*/
public void wipeData(int flags) {
@@ -521,7 +570,7 @@
}
}
}
-
+
/**
* @hide
*/
@@ -534,7 +583,7 @@
}
}
}
-
+
/**
* @hide
*/
@@ -547,10 +596,10 @@
Log.w(TAG, "Unable to retrieve device policy " + cn, e);
return null;
}
-
+
ResolveInfo ri = new ResolveInfo();
ri.activityInfo = ai;
-
+
try {
return new DeviceAdminInfo(mContext, ri);
} catch (XmlPullParserException e) {
@@ -561,7 +610,7 @@
return null;
}
}
-
+
/**
* @hide
*/
@@ -587,7 +636,7 @@
}
}
}
-
+
/**
* @hide
*/
@@ -600,7 +649,7 @@
}
}
}
-
+
/**
* @hide
*/