| /* |
| * Copyright (C) 2017 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.server.wifi.hotspot2; |
| |
| import android.annotation.Nullable; |
| import android.net.wifi.hotspot2.PasspointConfiguration; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import com.android.server.wifi.WifiCarrierInfoManager; |
| import com.android.server.wifi.WifiConfigStore; |
| import com.android.server.wifi.WifiKeyStore; |
| import com.android.server.wifi.util.WifiConfigStoreEncryptionUtil; |
| import com.android.server.wifi.util.XmlUtil; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * Responsible for Passpoint specific configuration store data. There are two types of |
| * configuration data, system wide and user specific. The system wide configurations are stored |
| * in the share store and user specific configurations are store in the user store. |
| * |
| * Below are the current configuration data for each respective store file, the list will |
| * probably grow in the future. |
| * |
| * Share Store (system wide configurations) |
| * - Current provider index - use for assigning provider ID during provider creation, to make |
| * sure each provider will have an unique ID across all users. |
| * |
| * User Store (user specific configurations) |
| * - Provider list - list of Passpoint provider configurations |
| * |
| */ |
| public class PasspointConfigUserStoreData implements WifiConfigStore.StoreData { |
| private static final String TAG = "PasspointConfigUserStoreData"; |
| private static final String XML_TAG_SECTION_HEADER_PASSPOINT_CONFIG_DATA = |
| "PasspointConfigData"; |
| private static final String XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER_LIST = |
| "ProviderList"; |
| private static final String XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER = |
| "Provider"; |
| private static final String XML_TAG_SECTION_HEADER_PASSPOINT_CONFIGURATION = |
| "Configuration"; |
| |
| private static final String XML_TAG_PROVIDER_ID = "ProviderID"; |
| private static final String XML_TAG_CREATOR_UID = "CreatorUID"; |
| private static final String XML_TAG_PACKAGE_NAME = "PackageName"; |
| private static final String XML_TAG_CA_CERTIFICATE_ALIASES = "CaCertificateAliases"; |
| private static final String XML_TAG_CA_CERTIFICATE_ALIAS = "CaCertificateAlias"; |
| private static final String XML_TAG_CLIENT_PRIVATE_KEY_AND_CERT_ALIAS = "ClientPrivateKeyAlias"; |
| private static final String XML_TAG_REMEDIATION_CA_CERTIFICATE_ALIAS = |
| "RemediationCaCertificateAlias"; |
| |
| private static final String XML_TAG_HAS_EVER_CONNECTED = "HasEverConnected"; |
| private static final String XML_TAG_IS_FROM_SUGGESTION = "IsFromSuggestion"; |
| private static final String XML_TAG_IS_TRUSTED = "IsTrusted"; |
| |
| private final WifiKeyStore mKeyStore; |
| private final WifiCarrierInfoManager mWifiCarrierInfoManager; |
| private final DataSource mDataSource; |
| |
| /** |
| * Interface define the data source for the Passpoint configuration store data. |
| */ |
| public interface DataSource { |
| /** |
| * Retrieve the provider list from the data source. |
| * |
| * @return List of {@link PasspointProvider} |
| */ |
| List<PasspointProvider> getProviders(); |
| |
| /** |
| * Set the provider list in the data source. |
| * |
| * @param providers The list of providers |
| */ |
| void setProviders(List<PasspointProvider> providers); |
| } |
| |
| PasspointConfigUserStoreData(WifiKeyStore keyStore, |
| WifiCarrierInfoManager wifiCarrierInfoManager, DataSource dataSource) { |
| mKeyStore = keyStore; |
| mWifiCarrierInfoManager = wifiCarrierInfoManager; |
| mDataSource = dataSource; |
| } |
| |
| @Override |
| public void serializeData(XmlSerializer out, |
| @Nullable WifiConfigStoreEncryptionUtil encryptionUtil) |
| throws XmlPullParserException, IOException { |
| serializeUserData(out); |
| } |
| |
| @Override |
| public void deserializeData(XmlPullParser in, int outerTagDepth, |
| @WifiConfigStore.Version int version, |
| @Nullable WifiConfigStoreEncryptionUtil encryptionUtil) |
| throws XmlPullParserException, IOException { |
| // Ignore empty reads. |
| if (in == null) { |
| return; |
| } |
| deserializeUserData(in, outerTagDepth); |
| } |
| |
| /** |
| * Reset user data (user specific Passpoint configurations). |
| */ |
| @Override |
| public void resetData() { |
| mDataSource.setProviders(new ArrayList<PasspointProvider>()); |
| } |
| |
| @Override |
| public boolean hasNewDataToSerialize() { |
| // always persist. |
| return true; |
| } |
| |
| @Override |
| public String getName() { |
| return XML_TAG_SECTION_HEADER_PASSPOINT_CONFIG_DATA; |
| } |
| |
| @Override |
| public @WifiConfigStore.StoreFileId int getStoreFileId() { |
| // Shared general store. |
| return WifiConfigStore.STORE_FILE_USER_GENERAL; |
| } |
| |
| /** |
| * Serialize user data (user specific Passpoint configurations) to a XML block. |
| * |
| * @param out The output stream to serialize data to |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private void serializeUserData(XmlSerializer out) throws XmlPullParserException, IOException { |
| serializeProviderList(out, mDataSource.getProviders()); |
| } |
| |
| /** |
| * Serialize the list of Passpoint providers from the data source to a XML block. |
| * |
| * @param out The output stream to serialize data to |
| * @param providerList The list of providers to serialize |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private void serializeProviderList(XmlSerializer out, List<PasspointProvider> providerList) |
| throws XmlPullParserException, IOException { |
| if (providerList == null) { |
| return; |
| } |
| XmlUtil.writeNextSectionStart(out, XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER_LIST); |
| for (PasspointProvider provider : providerList) { |
| serializeProvider(out, provider); |
| } |
| XmlUtil.writeNextSectionEnd(out, XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER_LIST); |
| } |
| |
| /** |
| * Serialize a Passpoint provider to a XML block. |
| * |
| * @param out The output stream to serialize data to |
| * @param provider The provider to serialize |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private void serializeProvider(XmlSerializer out, PasspointProvider provider) |
| throws XmlPullParserException, IOException { |
| XmlUtil.writeNextSectionStart(out, XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER); |
| XmlUtil.writeNextValue(out, XML_TAG_PROVIDER_ID, provider.getProviderId()); |
| XmlUtil.writeNextValue(out, XML_TAG_CREATOR_UID, provider.getCreatorUid()); |
| if (provider.getPackageName() != null) { |
| XmlUtil.writeNextValue(out, XML_TAG_PACKAGE_NAME, provider.getPackageName()); |
| } |
| XmlUtil.writeNextValue(out, XML_TAG_CA_CERTIFICATE_ALIASES, |
| provider.getCaCertificateAliases()); |
| XmlUtil.writeNextValue(out, XML_TAG_CLIENT_PRIVATE_KEY_AND_CERT_ALIAS, |
| provider.getClientPrivateKeyAndCertificateAlias()); |
| XmlUtil.writeNextValue(out, XML_TAG_HAS_EVER_CONNECTED, provider.getHasEverConnected()); |
| XmlUtil.writeNextValue(out, XML_TAG_IS_FROM_SUGGESTION, provider.isFromSuggestion()); |
| XmlUtil.writeNextValue(out, XML_TAG_IS_TRUSTED, provider.isTrusted()); |
| if (provider.getConfig() != null) { |
| XmlUtil.writeNextSectionStart(out, XML_TAG_SECTION_HEADER_PASSPOINT_CONFIGURATION); |
| PasspointXmlUtils.serializePasspointConfiguration(out, provider.getConfig()); |
| XmlUtil.writeNextSectionEnd(out, XML_TAG_SECTION_HEADER_PASSPOINT_CONFIGURATION); |
| } |
| XmlUtil.writeNextValue(out, XML_TAG_REMEDIATION_CA_CERTIFICATE_ALIAS, |
| provider.getRemediationCaCertificateAlias()); |
| XmlUtil.writeNextSectionEnd(out, XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER); |
| } |
| |
| /** |
| * Deserialize user data (user specific Passpoint configurations) from the input stream. |
| * |
| * @param in The input stream to read data from |
| * @param outerTagDepth The tag depth of the current XML section |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private void deserializeUserData(XmlPullParser in, int outerTagDepth) |
| throws XmlPullParserException, IOException { |
| String[] headerName = new String[1]; |
| while (XmlUtil.gotoNextSectionOrEnd(in, headerName, outerTagDepth)) { |
| switch (headerName[0]) { |
| case XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER_LIST: |
| mDataSource.setProviders(deserializeProviderList(in, outerTagDepth + 1)); |
| break; |
| default: |
| Log.w(TAG, "Ignoring unknown Passpoint user store data " + headerName[0]); |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Deserialize a list of Passpoint providers from the input stream. |
| * |
| * @param in The input stream to read data form |
| * @param outerTagDepth The tag depth of the current XML section |
| * @return List of {@link PasspointProvider} |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private List<PasspointProvider> deserializeProviderList(XmlPullParser in, int outerTagDepth) |
| throws XmlPullParserException, IOException { |
| List<PasspointProvider> providerList = new ArrayList<>(); |
| while (XmlUtil.gotoNextSectionWithNameOrEnd(in, XML_TAG_SECTION_HEADER_PASSPOINT_PROVIDER, |
| outerTagDepth)) { |
| providerList.add(deserializeProvider(in, outerTagDepth + 1)); |
| } |
| return providerList; |
| } |
| |
| /** |
| * Deserialize a Passpoint provider from the input stream. |
| * |
| * @param in The input stream to read data from |
| * @param outerTagDepth The tag depth of the current XML section |
| * @return {@link PasspointProvider} |
| * @throws XmlPullParserException |
| * @throws IOException |
| */ |
| private PasspointProvider deserializeProvider(XmlPullParser in, int outerTagDepth) |
| throws XmlPullParserException, IOException { |
| long providerId = Long.MIN_VALUE; |
| int creatorUid = Integer.MIN_VALUE; |
| List<String> caCertificateAliases = null; |
| String caCertificateAlias = null; |
| String clientPrivateKeyAndCertificateAlias = null; |
| String remediationCaCertificateAlias = null; |
| String packageName = null; |
| boolean hasEverConnected = false; |
| boolean isFromSuggestion = false; |
| boolean shared = false; |
| boolean isTrusted = true; |
| PasspointConfiguration config = null; |
| while (XmlUtil.nextElementWithin(in, outerTagDepth)) { |
| if (in.getAttributeValue(null, "name") != null) { |
| // Value elements. |
| String[] name = new String[1]; |
| Object value = XmlUtil.readCurrentValue(in, name); |
| switch (name[0]) { |
| case XML_TAG_PROVIDER_ID: |
| providerId = (long) value; |
| break; |
| case XML_TAG_CREATOR_UID: |
| creatorUid = (int) value; |
| break; |
| case XML_TAG_PACKAGE_NAME: |
| packageName = (String) value; |
| break; |
| case XML_TAG_CA_CERTIFICATE_ALIASES: |
| caCertificateAliases = (List) value; |
| break; |
| case XML_TAG_CA_CERTIFICATE_ALIAS: |
| // Backwards compatibility: for the case that installs a profile that |
| // uses this alias. |
| caCertificateAlias = (String) value; |
| break; |
| case XML_TAG_CLIENT_PRIVATE_KEY_AND_CERT_ALIAS: |
| clientPrivateKeyAndCertificateAlias = (String) value; |
| break; |
| case XML_TAG_REMEDIATION_CA_CERTIFICATE_ALIAS: |
| remediationCaCertificateAlias = (String) value; |
| break; |
| case XML_TAG_HAS_EVER_CONNECTED: |
| hasEverConnected = (boolean) value; |
| break; |
| case XML_TAG_IS_FROM_SUGGESTION: |
| isFromSuggestion = (boolean) value; |
| break; |
| case XML_TAG_IS_TRUSTED: |
| isTrusted = (boolean) value; |
| break; |
| default: |
| Log.w(TAG, "Ignoring unknown value name found " + name[0]); |
| break; |
| } |
| } else { |
| if (TextUtils.equals(in.getName(), |
| XML_TAG_SECTION_HEADER_PASSPOINT_CONFIGURATION)) { |
| config = PasspointXmlUtils.deserializePasspointConfiguration(in, |
| outerTagDepth + 1); |
| } else { |
| Log.w(TAG, "Ignoring unexpected section under Provider: " |
| + in.getName()); |
| } |
| } |
| } |
| if (providerId == Long.MIN_VALUE) { |
| throw new XmlPullParserException("Missing provider ID"); |
| } |
| |
| if (caCertificateAliases != null && caCertificateAlias != null) { |
| throw new XmlPullParserException( |
| "Should not have valid entry for caCertificateAliases and caCertificateAlias " |
| + "at the same time"); |
| } |
| |
| if (caCertificateAlias != null) { |
| caCertificateAliases = Arrays.asList(caCertificateAlias); |
| } |
| if (config == null) { |
| throw new XmlPullParserException("Missing Passpoint configuration"); |
| } |
| PasspointProvider provider = new PasspointProvider(config, mKeyStore, |
| mWifiCarrierInfoManager, |
| providerId, creatorUid, packageName, isFromSuggestion, caCertificateAliases, |
| clientPrivateKeyAndCertificateAlias, remediationCaCertificateAlias, |
| hasEverConnected, shared); |
| if (isFromSuggestion) { |
| provider.setTrusted(isTrusted); |
| } |
| return provider; |
| } |
| } |
| |