Revert submission

am: ff23d602c7

Change-Id: Iffdbf3da933887dfceac8e199edd1603d0b57ca1

7 files changed, 31 insertions, 314 deletions

diff --git a/service/java/com/android/server/wifi/ConfigurationMap.java b/service/java/com/android/server/wifi/ConfigurationMap.java
index 443eef879..a5cd18f2a 100644
--- a/service/java/com/android/server/wifi/ConfigurationMap.java
+++ b/service/java/com/android/server/wifi/ConfigurationMap.java
@@ -126,30 +126,6 @@ public class ConfigurationMap {
                 ScanResultMatchInfo.fromScanResult(scanResult));
     }
 
-    /**
-     * Retrieves a |WifiConfiguration| object with PSK key management, that is matching the provided
-     * |scanResult| SSID from the internal map.
-     * Used for upgrading WPA2-Personal networks to WPA3-Personal, when AP is in transition mode.
-     */
-    public WifiConfiguration getPskNetworkByScanResultForCurrentUser(ScanResult scanResult) {
-        // Check if WPA2-Personal saved network is available
-        ScanResultMatchInfo matchInfo = ScanResultMatchInfo.fromScanResult(scanResult);
-        matchInfo.networkType = WifiConfiguration.SECURITY_TYPE_PSK;
-        return mScanResultMatchInfoMapForCurrentUser.get(matchInfo);
-    }
-
-    /**
-     * Retrieves a |WifiConfiguration| object with no security, that is matching the provided
-     * |scanResult| SSID from the internal map.
-     * Used for upgrading Open networks to OWE, when AP is in transition mode.
-     */
-    public WifiConfiguration getOpenNetworkByScanResultForCurrentUser(ScanResult scanResult) {
-        // Check if Open saved network is available
-        ScanResultMatchInfo matchInfo = ScanResultMatchInfo.fromScanResult(scanResult);
-        matchInfo.networkType = WifiConfiguration.SECURITY_TYPE_OPEN;
-        return mScanResultMatchInfoMapForCurrentUser.get(matchInfo);
-    }
-
     public Collection<WifiConfiguration> valuesForAllUsers() {
         return mPerID.values();
     }
diff --git a/service/java/com/android/server/wifi/ScanResultMatchInfo.java b/service/java/com/android/server/wifi/ScanResultMatchInfo.java
index 1e15a3ecc..b3d10cc38 100644
--- a/service/java/com/android/server/wifi/ScanResultMatchInfo.java
+++ b/service/java/com/android/server/wifi/ScanResultMatchInfo.java
@@ -131,8 +131,26 @@ public class ScanResultMatchInfo {
             return false;
         }
         ScanResultMatchInfo other = (ScanResultMatchInfo) otherObj;
-        return Objects.equals(networkSsid, other.networkSsid)
-                && networkType == other.networkType;
+        if (!Objects.equals(networkSsid, other.networkSsid)) {
+            return false;
+        }
+        boolean networkTypeEquals;
+
+        // Detect <SSID, PSK+SAE> scan result and say it is equal to <SSID, PSK> configuration
+        if (other.pskSaeInTransitionMode && networkType == WifiConfiguration.SECURITY_TYPE_PSK
+                || (pskSaeInTransitionMode
+                && other.networkType == WifiConfiguration.SECURITY_TYPE_PSK)) {
+            networkTypeEquals = true;
+        } else if ((networkType == WifiConfiguration.SECURITY_TYPE_OPEN
+                && other.oweInTransitionMode) || (oweInTransitionMode
+                && other.networkType == WifiConfiguration.SECURITY_TYPE_OPEN)) {
+            // Special case we treat Enhanced Open and Open as equals. This is done to support the
+            // case where a saved network is Open but we found an OWE in transition network.
+            networkTypeEquals = true;
+        } else {
+            networkTypeEquals = networkType == other.networkType;
+        }
+        return networkTypeEquals;
     }
 
     @Override
diff --git a/service/java/com/android/server/wifi/WifiConfigManager.java b/service/java/com/android/server/wifi/WifiConfigManager.java
index c027675ce..533155d0c 100644
--- a/service/java/com/android/server/wifi/WifiConfigManager.java
+++ b/service/java/com/android/server/wifi/WifiConfigManager.java
@@ -1117,7 +1117,6 @@ public class WifiConfigManager {
         if (randomizedMac != null) {
             newInternalConfig.setRandomizedMacAddress(randomizedMac);
         }
-        newInternalConfig.clonedNetworkConfigKey = externalConfig.clonedNetworkConfigKey;
         return newInternalConfig;
     }
 
@@ -1402,27 +1401,6 @@ public class WifiConfigManager {
             Log.e(TAG, "Failed to remove network " + config.getPrintableSsid());
             return false;
         }
-
-        // Remove any cloned networks
-        if (config.clonedNetworkConfigKey != null) {
-            WifiConfiguration clonedConfig = getConfiguredNetwork(config.clonedNetworkConfigKey);
-
-            if (clonedConfig != null) {
-                Log.d(TAG, "Removing cloned network " + clonedConfig.getPrintableSsid());
-                if (!removeNetworkInternal(clonedConfig, uid)) {
-                    Log.e(TAG, "Failed to remove network " + clonedConfig.getPrintableSsid());
-                    return false;
-                }
-
-                if (clonedConfig.networkId == mLastSelectedNetworkId) {
-                    clearLastSelectedNetwork();
-                }
-            } else {
-                Log.w(TAG, "Could not find a cloned network with key "
-                        + config.clonedNetworkConfigKey);
-            }
-        }
-
         if (networkId == mLastSelectedNetworkId) {
             clearLastSelectedNetwork();
         }
@@ -2287,24 +2265,6 @@ public class WifiConfigManager {
         } catch (IllegalArgumentException e) {
             Log.e(TAG, "Failed to lookup network from config map", e);
         }
-        if (config == null) {
-            /**
-             * Special case for WPA3-Personal and OWE in transition mode.
-             * These networks will be treated as WPA3/OWE with a special flag that indicates
-             * transition mode enabled. If we have a matching WPA2/Open saved network, create a new
-             * upgraded WPA3/OWE network and use it to connect.
-             */
-            ScanResultMatchInfo matchInfo = ScanResultMatchInfo.fromScanResult(scanResult);
-            if (matchInfo.pskSaeInTransitionMode || matchInfo.oweInTransitionMode) {
-                if (handleTransitionNetwork(scanResult, matchInfo.pskSaeInTransitionMode)) {
-                    try {
-                        config = mConfiguredNetworks.getByScanResultForCurrentUser(scanResult);
-                    } catch (IllegalArgumentException e) {
-                        Log.e(TAG, "Failed to lookup network from config map", e);
-                    }
-                }
-            }
-        }
         if (config != null) {
             if (mVerboseLoggingEnabled) {
                 Log.v(TAG, "getSavedNetworkFromScanDetail Found " + config.configKey()
@@ -2314,41 +2274,6 @@ public class WifiConfigManager {
         return config;
     }
 
-    private boolean handleTransitionNetwork(ScanResult scanResult, boolean isPskSae) {
-        WifiConfiguration config;
-
-        if (isPskSae) {
-            config = mConfiguredNetworks.getPskNetworkByScanResultForCurrentUser(scanResult);
-        } else {
-            config = mConfiguredNetworks.getOpenNetworkByScanResultForCurrentUser(scanResult);
-        }
-
-        if (config != null) {
-            // Create a new WPA3-Personal or OWE connection
-            WifiConfiguration newConfig = new WifiConfiguration(config);
-            newConfig.networkId = WifiConfiguration.INVALID_NETWORK_ID;
-            newConfig.clonedNetworkConfigKey = config.configKey();
-            if (isPskSae) {
-                newConfig.setSecurityParams(WifiConfiguration.SECURITY_TYPE_SAE);
-            } else {
-                newConfig.setSecurityParams(WifiConfiguration.SECURITY_TYPE_OWE);
-            }
-            NetworkUpdateResult res = addOrUpdateNetwork(newConfig, config.creatorUid,
-                    config.creatorName);
-
-            if (!res.isSuccess()) {
-                Log.e(TAG, "Failed to add new configuration for " + newConfig.SSID);
-                return false;
-            }
-            config.clonedNetworkConfigKey = newConfig.configKey();
-            addOrUpdateNetwork(config, config.creatorUid);
-            enableNetwork(res.netId, false, config.creatorUid);
-            return true;
-        }
-
-        return false;
-    }
-
     /**
      * Retrieves a configured network corresponding to the provided scan detail if one exists and
      * caches the provided |scanDetail| into the corresponding scan detail cache entry
diff --git a/tests/wifitests/src/com/android/server/wifi/ConfigurationMapTest.java b/tests/wifitests/src/com/android/server/wifi/ConfigurationMapTest.java
index b866b965b..97141c496 100644
--- a/tests/wifitests/src/com/android/server/wifi/ConfigurationMapTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/ConfigurationMapTest.java
@@ -276,7 +276,6 @@ public class ConfigurationMapTest {
         verifyScanResultMatchWithNetwork(WifiConfigurationTestUtil.createPskNetwork());
         verifyScanResultMatchWithNetwork(WifiConfigurationTestUtil.createWepNetwork());
         verifyScanResultMatchWithNetwork(WifiConfigurationTestUtil.createEapNetwork());
-        verifyScanResultMatchWithNetwork(WifiConfigurationTestUtil.createSaeNetwork());
     }
 
     /**
@@ -329,54 +328,4 @@ public class ConfigurationMapTest {
         mConfigs.clear();
         assertNull(mConfigs.getByScanResultForCurrentUser(scanResult));
     }
-
-    /**
-     * Verifies that {@link ConfigurationMap#getPskNetworkByScanResultForCurrentUser(ScanResult)}
-     * can positively match a PSK network for transition mode AP.
-     */
-    @Test
-    public void testFindPskNetworkFromSaeScanResult() {
-        final String wpa2Wpa3TransitionSsid = "\"WPA3-Transition\"";
-        WifiConfiguration saePskConfig =
-                WifiConfigurationTestUtil.createSaeNetwork(wpa2Wpa3TransitionSsid);
-        WifiConfiguration pskConfig =
-                WifiConfigurationTestUtil.createPskNetwork(wpa2Wpa3TransitionSsid);
-        mConfigs.put(saePskConfig);
-        mConfigs.put(pskConfig);
-
-        ScanDetail scanDetail = WifiConfigurationTestUtil
-                .createScanDetailForWpa2Wpa3TransitionModeNetwork(saePskConfig,
-                        "AA:BB:CC:DD:CC:BB", -40, 2402, 0, 1);
-        ScanResult scanResult = scanDetail.getScanResult();
-
-        WifiConfiguration retrievedConfig =
-                mConfigs.getPskNetworkByScanResultForCurrentUser(scanResult);
-        assertNotNull(retrievedConfig);
-        assertEquals(pskConfig.configKey(), retrievedConfig.configKey());
-    }
-
-    /**
-     * Verifies that {@link ConfigurationMap#getOpenNetworkByScanResultForCurrentUser(ScanResult)}
-     * can positively match a PSK network for transition mode AP.
-     */
-    @Test
-    public void testFindOpenNetworkFromOweScanResult() {
-        final String oweTransitionSsid = "\"OWE-Transition\"";
-        WifiConfiguration oweOpenConfig =
-                WifiConfigurationTestUtil.createOweNetwork(oweTransitionSsid);
-        WifiConfiguration openConfig =
-                WifiConfigurationTestUtil.createOpenNetwork(oweTransitionSsid);
-        mConfigs.put(oweOpenConfig);
-        mConfigs.put(openConfig);
-
-        ScanDetail scanDetail = WifiConfigurationTestUtil
-                .createScanDetailForOweTransitionModeNetwork(oweOpenConfig,
-                        "AA:BB:CC:DD:CC:BB", -40, 2402, 0, 1);
-        ScanResult scanResult = scanDetail.getScanResult();
-
-        WifiConfiguration retrievedConfig =
-                mConfigs.getOpenNetworkByScanResultForCurrentUser(scanResult);
-        assertNotNull(retrievedConfig);
-        assertEquals(openConfig.configKey(), retrievedConfig.configKey());
-    }
 }
diff --git a/tests/wifitests/src/com/android/server/wifi/ScanResultMatchInfoTest.java b/tests/wifitests/src/com/android/server/wifi/ScanResultMatchInfoTest.java
index b931e3f5b..2712ce077 100644
--- a/tests/wifitests/src/com/android/server/wifi/ScanResultMatchInfoTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/ScanResultMatchInfoTest.java
@@ -92,7 +92,7 @@ public class ScanResultMatchInfoTest {
     @Test
     public void testEqualityRulesForTransitionMode() {
         WifiConfiguration wifiConfiguration =
-                WifiConfigurationTestUtil.createSaeNetwork("\"Transition is Hard\"");
+                WifiConfigurationTestUtil.createPskNetwork("\"Transition is Hard\"");
         ScanDetail scanDetail = createScanDetailForWpa2Wpa3TransitionModeNetwork(wifiConfiguration,
                 "AA:BB:CC:DD:CC:BB");
 
diff --git a/tests/wifitests/src/com/android/server/wifi/WifiConfigManagerTest.java b/tests/wifitests/src/com/android/server/wifi/WifiConfigManagerTest.java
index c3b90d36c..c4cbc6e50 100644
--- a/tests/wifitests/src/com/android/server/wifi/WifiConfigManagerTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/WifiConfigManagerTest.java
@@ -185,8 +185,6 @@ public class WifiConfigManagerTest {
                     return TEST_NO_PERM_NAME;
                 } else if (uid == Process.WIFI_UID) {
                     return TEST_WIFI_NAME;
-                } else if (uid == Process.SYSTEM_UID) {
-                    return TEST_WIFI_NAME;
                 }
                 fail("Unexpected UID: " + uid);
                 return "";
@@ -5351,133 +5349,4 @@ public class WifiConfigManagerTest {
         assertFalse(mWifiConfigManager.getConfiguredNetwork(networkId)
                     .getNetworkSelectionStatus().isNetworkTemporaryDisabled());
     }
-
-    /**
-     * Verifies that when scanning a WPA3 in transition mode AP, and there is a matching WPA2 saved
-     * network, {@link WifiConfigManager#getConfiguredNetworkForScanDetailAndCache(ScanDetail)}
-     * clones a new WPA3 saved network that will be used to connect to it.
-     *
-     * The test also verifies that the new network is marked as cloned.
-     */
-    @Test
-    public void testCloningPskNetworkForTransitionMode() {
-        final String wpa2Wpa3TransitionSsid = "\"WPA3-Transition\"";
-        WifiConfiguration saeNetwork = WifiConfigurationTestUtil
-                .createSaeNetwork(wpa2Wpa3TransitionSsid);
-        WifiConfiguration pskNetwork = WifiConfigurationTestUtil
-                .createPskNetwork(wpa2Wpa3TransitionSsid);
-
-        // First add the WPA2 saved network.
-        verifyAddNetworkToWifiConfigManager(pskNetwork);
-
-        // Now create a dummy scan detail for WPA3-Transition.
-        ScanDetail scanDetail = WifiConfigurationTestUtil
-                .createScanDetailForWpa2Wpa3TransitionModeNetwork(saeNetwork,
-                        "AA:BB:CC:DD:CC:BB", -40, 2402, 0, 1);
-
-
-        WifiConfiguration retrievedNetwork =
-                mWifiConfigManager.getConfiguredNetworkForScanDetailAndCache(scanDetail);
-        // Retrieve the network with password data for comparison.
-        retrievedNetwork =
-                mWifiConfigManager.getConfiguredNetworkWithPassword(retrievedNetwork.networkId);
-
-        // Verify cloned network matches the expected WPA3 network
-        assertEquals(saeNetwork.SSID, retrievedNetwork.SSID);
-        assertEquals(saeNetwork.BSSID, retrievedNetwork.BSSID);
-        assertEquals(saeNetwork.preSharedKey, retrievedNetwork.preSharedKey);
-        assertEquals(saeNetwork.requirePMF, retrievedNetwork.requirePMF);
-        assertEquals(saeNetwork.allowedKeyManagement, retrievedNetwork.allowedKeyManagement);
-        assertNotNull(retrievedNetwork.clonedNetworkConfigKey);
-        assertEquals(retrievedNetwork.clonedNetworkConfigKey, pskNetwork.configKey());
-    }
-
-    /**
-     * Verifies that when scanning a WPA3 in transition mode AP, and there is a matching WPA2 saved
-     * network, {@link WifiConfigManager#getConfiguredNetworkForScanDetailAndCache(ScanDetail)}
-     * clones a new WPA3 saved network that will be used to connect to it.
-     *
-     * The test also verifies that the new network is marked as cloned.
-     */
-    @Test
-    public void testCloningOweNetworkForTransitionMode() {
-        final String oweTransitionSsid = "\"OWE-Transition\"";
-        WifiConfiguration oweNetwork = WifiConfigurationTestUtil
-                .createOweNetwork(oweTransitionSsid);
-        WifiConfiguration openNetwork = WifiConfigurationTestUtil
-                .createOpenNetwork(oweTransitionSsid);
-
-        // First add the Open saved network.
-        verifyAddNetworkToWifiConfigManager(openNetwork);
-
-        // Now create a dummy scan detail for OWE-Transition.
-        ScanDetail scanDetail = WifiConfigurationTestUtil
-                .createScanDetailForOweTransitionModeNetwork(oweNetwork,
-                        "AA:BB:CC:DD:CC:BB", -40, 2402, 0, 1);
-
-
-        WifiConfiguration retrievedNetwork =
-                mWifiConfigManager.getConfiguredNetworkForScanDetailAndCache(scanDetail);
-        // Retrieve the network with password data for comparison.
-        retrievedNetwork =
-                mWifiConfigManager.getConfiguredNetworkWithPassword(retrievedNetwork.networkId);
-
-        // Verify cloned network matches the expected OWE network
-        assertEquals(oweNetwork.SSID, retrievedNetwork.SSID);
-        assertEquals(oweNetwork.BSSID, retrievedNetwork.BSSID);
-        assertEquals(oweNetwork.preSharedKey, retrievedNetwork.preSharedKey);
-        assertEquals(oweNetwork.requirePMF, retrievedNetwork.requirePMF);
-        assertEquals(oweNetwork.allowedKeyManagement, retrievedNetwork.allowedKeyManagement);
-        assertNotNull(retrievedNetwork.clonedNetworkConfigKey);
-        assertEquals(retrievedNetwork.clonedNetworkConfigKey, openNetwork.configKey());
-    }
-
-    /**
-     * Verifies that when a cloned network is removed, its original pair is removed as well
-     * {@link WifiConfigManager#removeNetwork(int)}
-     */
-    @Test
-    public void testRemoveClonedSaeNetwork() {
-        final String wpa2Wpa3TransitionSsid = "\"WPA3-Transition\"";
-        WifiConfiguration saeNetwork = WifiConfigurationTestUtil
-                .createSaeNetwork(wpa2Wpa3TransitionSsid);
-        WifiConfiguration pskNetwork = WifiConfigurationTestUtil
-                .createPskNetwork(wpa2Wpa3TransitionSsid);
-
-        // First add the WPA2 saved network.
-        NetworkUpdateResult result = verifyAddNetworkToWifiConfigManager(pskNetwork);
-        verify(mWcmListener).onSavedNetworkAdded(result.netId);
-        reset(mWcmListener);
-
-        // Now create a dummy scan detail for WPA3-Transition.
-        ScanDetail scanDetail = WifiConfigurationTestUtil
-                .createScanDetailForWpa2Wpa3TransitionModeNetwork(saeNetwork,
-                        "AA:BB:CC:DD:CC:BB", -40, 2402, 0, 1);
-
-        WifiConfiguration retrievedNetwork =
-                mWifiConfigManager.getConfiguredNetworkForScanDetailAndCache(scanDetail);
-        // Retrieve the network with password data for comparison.
-        retrievedNetwork =
-                mWifiConfigManager.getConfiguredNetworkWithPassword(retrievedNetwork.networkId);
-
-        // Verify cloned network matches the expected WPA3 network
-        assertEquals(saeNetwork.SSID, retrievedNetwork.SSID);
-        assertEquals(saeNetwork.BSSID, retrievedNetwork.BSSID);
-        assertEquals(saeNetwork.preSharedKey, retrievedNetwork.preSharedKey);
-        assertEquals(saeNetwork.requirePMF, retrievedNetwork.requirePMF);
-        assertEquals(saeNetwork.allowedKeyManagement, retrievedNetwork.allowedKeyManagement);
-        assertNotNull(retrievedNetwork.clonedNetworkConfigKey);
-        assertEquals(retrievedNetwork.clonedNetworkConfigKey, pskNetwork.configKey());
-
-        // Ensure that configured network list is not empty.
-        assertTrue(mWifiConfigManager.getConfiguredNetworks().size() == 2);
-        verify(mWcmListener).onSavedNetworkAdded(retrievedNetwork.networkId);
-        reset(mWcmListener);
-
-        assertTrue(mWifiConfigManager.removeNetwork(retrievedNetwork.networkId, TEST_CREATOR_UID));
-
-        // Ensure that configured network list is empty now.
-        assertTrue(mWifiConfigManager.getConfiguredNetworks().isEmpty());
-        verify(mWcmListener).onSavedNetworkRemoved(retrievedNetwork.networkId);
-    }
 }
diff --git a/tests/wifitests/src/com/android/server/wifi/WifiConfigurationTestUtil.java b/tests/wifitests/src/com/android/server/wifi/WifiConfigurationTestUtil.java
index 826250497..056df7c37 100644
--- a/tests/wifitests/src/com/android/server/wifi/WifiConfigurationTestUtil.java
+++ b/tests/wifitests/src/com/android/server/wifi/WifiConfigurationTestUtil.java
@@ -248,11 +248,8 @@ public class WifiConfigurationTestUtil {
     }
 
     public static WifiConfiguration createOweNetwork(String ssid) {
-        WifiConfiguration configuration =  generateWifiConfig(TEST_NETWORK_ID, TEST_UID, ssid,
-                true, true, null, null, SECURITY_OWE);
-
-        configuration.requirePMF = true;
-        return configuration;
+        return generateWifiConfig(TEST_NETWORK_ID, TEST_UID, ssid, true, true, null,
+                null, SECURITY_OWE);
     }
 
     public static WifiConfiguration createOpenNetwork() {
@@ -277,7 +274,14 @@ public class WifiConfigurationTestUtil {
     }
 
     public static WifiConfiguration createSaeNetwork() {
-        return createSaeNetwork(createNewSSID());
+        WifiConfiguration configuration =
+                generateWifiConfig(TEST_NETWORK_ID, TEST_UID, createNewSSID(), true, true, null,
+                        null, SECURITY_SAE);
+
+        // SAE password uses the same member.
+        configuration.preSharedKey = TEST_PSK;
+        configuration.requirePMF = true;
+        return configuration;
     }
 
     public static WifiConfiguration createPskNetwork() {
@@ -300,10 +304,6 @@ public class WifiConfigurationTestUtil {
         WifiConfiguration configuration =
                 generateWifiConfig(TEST_NETWORK_ID, TEST_UID, ssid, true, true, null,
                         null, SECURITY_SAE);
-
-        // SAE password uses the same member.
-        configuration.preSharedKey = TEST_PSK;
-        configuration.requirePMF = true;
         return configuration;
     }
 
@@ -515,15 +515,6 @@ public class WifiConfigurationTestUtil {
     }
 
     /**
-     * Gets scan result capabilities for a WPA2/WPA3-Transition mode network configuration
-     */
-    private static String
-            getScanResultCapsForOweTransitionNetwork(WifiConfiguration configuration) {
-        String caps = "[OWE_TRANSITION-CCMP]";
-        return caps;
-    }
-
-    /**
      * Creates a scan detail corresponding to the provided network and given BSSID, etc.
      */
     public static ScanDetail createScanDetailForNetwork(
@@ -546,17 +537,6 @@ public class WifiConfigurationTestUtil {
         return new ScanDetail(ssid, bssid, caps, level, frequency, tsf, seen);
     }
 
-    /**
-     * Creates a scan detail corresponding to the provided network and given BSSID, but sets
-     * the capabilities to OWE-Transition mode network.
-     */
-    public static ScanDetail createScanDetailForOweTransitionModeNetwork(
-            WifiConfiguration configuration, String bssid, int level, int frequency,
-            long tsf, long seen) {
-        String caps = getScanResultCapsForOweTransitionNetwork(configuration);
-        WifiSsid ssid = WifiSsid.createFromAsciiEncoded(configuration.getPrintableSsid());
-        return new ScanDetail(ssid, bssid, caps, level, frequency, tsf, seen);
-    }
 
     /**
      * Asserts that the 2 WifiConfigurations are equal in the elements saved for both backup/restore