diff options
Diffstat (limited to 'core/java')
3 files changed, 559 insertions, 18 deletions
diff --git a/core/java/android/net/vcn/VcnControlPlaneIkeConfig.java b/core/java/android/net/vcn/VcnControlPlaneIkeConfig.java index de086f63b14d..22d7faf2fe18 100644 --- a/core/java/android/net/vcn/VcnControlPlaneIkeConfig.java +++ b/core/java/android/net/vcn/VcnControlPlaneIkeConfig.java @@ -19,11 +19,13 @@ package android.net.vcn; import static android.net.vcn.VcnControlPlaneConfig.CONFIG_TYPE_IKE; import android.annotation.NonNull; -import android.annotation.Nullable; import android.net.ipsec.ike.IkeSessionParams; import android.net.ipsec.ike.TunnelModeChildSessionParams; +import android.net.vcn.persistablebundleutils.IkeSessionParamsUtils; +import android.net.vcn.persistablebundleutils.TunnelModeChildSessionParamsUtils; import android.os.PersistableBundle; import android.util.ArraySet; +import android.util.Log; import java.util.Objects; @@ -38,14 +40,11 @@ import java.util.Objects; public final class VcnControlPlaneIkeConfig extends VcnControlPlaneConfig { private static final String TAG = VcnControlPlaneIkeConfig.class.getSimpleName(); - // STOPSHIP: b/163604823 Make mIkeParams and mChildParams @NonNull when it is supported to - // construct mIkeParams and mChildParams from PersistableBundles. - private static final String IKE_PARAMS_KEY = "mIkeParams"; - @Nullable private final IkeSessionParams mIkeParams; + @NonNull private final IkeSessionParams mIkeParams; private static final String CHILD_PARAMS_KEY = "mChildParams"; - @Nullable private final TunnelModeChildSessionParams mChildParams; + @NonNull private final TunnelModeChildSessionParams mChildParams; private static final ArraySet<String> BUNDLE_KEY_SET = new ArraySet<>(); @@ -80,11 +79,19 @@ public final class VcnControlPlaneIkeConfig extends VcnControlPlaneConfig { final PersistableBundle ikeParamsBundle = in.getPersistableBundle(IKE_PARAMS_KEY); final PersistableBundle childParamsBundle = in.getPersistableBundle(CHILD_PARAMS_KEY); - // STOPSHIP: b/163604823 Support constructing mIkeParams and mChildParams from - // PersistableBundles. + Objects.requireNonNull(ikeParamsBundle, "IKE Session Params was null"); + Objects.requireNonNull(childParamsBundle, "Child Session Params was null"); + + mIkeParams = IkeSessionParamsUtils.fromPersistableBundle(ikeParamsBundle); + mChildParams = TunnelModeChildSessionParamsUtils.fromPersistableBundle(childParamsBundle); + + for (String key : in.keySet()) { + if (!BUNDLE_KEY_SET.contains(key)) { + Log.w(TAG, "Found an unexpected key in the PersistableBundle: " + key); + } + } - mIkeParams = null; - mChildParams = null; + validate(); } private void validate() { @@ -101,9 +108,11 @@ public final class VcnControlPlaneIkeConfig extends VcnControlPlaneConfig { @NonNull public PersistableBundle toPersistableBundle() { final PersistableBundle result = super.toPersistableBundle(); - - // STOPSHIP: b/163604823 Support converting mIkeParams and mChildParams to - // PersistableBundles. + result.putPersistableBundle( + IKE_PARAMS_KEY, IkeSessionParamsUtils.toPersistableBundle(mIkeParams)); + result.putPersistableBundle( + CHILD_PARAMS_KEY, + TunnelModeChildSessionParamsUtils.toPersistableBundle(mChildParams)); return result; } @@ -134,10 +143,9 @@ public final class VcnControlPlaneIkeConfig extends VcnControlPlaneConfig { VcnControlPlaneIkeConfig other = (VcnControlPlaneIkeConfig) o; - // STOPSHIP: b/163604823 Also check mIkeParams and mChildParams when it is supported to - // construct mIkeParams and mChildParams from PersistableBundles. They are not checked - // now so that VcnGatewayConnectionConfigTest and VcnConfigTest can pass. - return super.equals(o); + return super.equals(o) + && Objects.equals(mIkeParams, other.mIkeParams) + && Objects.equals(mChildParams, other.mChildParams); } /** @hide */ diff --git a/core/java/android/net/vcn/persistablebundleutils/CertUtils.java b/core/java/android/net/vcn/persistablebundleutils/CertUtils.java index b6036b4a6fd1..35b318687773 100644 --- a/core/java/android/net/vcn/persistablebundleutils/CertUtils.java +++ b/core/java/android/net/vcn/persistablebundleutils/CertUtils.java @@ -18,18 +18,24 @@ package android.net.vcn.persistablebundleutils; import java.io.ByteArrayInputStream; import java.io.InputStream; +import java.security.KeyFactory; +import java.security.NoSuchAlgorithmException; import java.security.cert.CertificateException; import java.security.cert.CertificateFactory; import java.security.cert.X509Certificate; +import java.security.interfaces.RSAPrivateKey; +import java.security.spec.InvalidKeySpecException; +import java.security.spec.PKCS8EncodedKeySpec; import java.util.Objects; /** - * CertUtils provides utility methods for constructing Certificate. + * CertUtils provides utility methods for constructing Certificate and PrivateKey. * * @hide */ public class CertUtils { private static final String CERT_TYPE_X509 = "X.509"; + private static final String PRIVATE_KEY_TYPE_RSA = "RSA"; /** Decodes an ASN.1 DER encoded Certificate */ public static X509Certificate certificateFromByteArray(byte[] derEncoded) { @@ -43,4 +49,18 @@ public class CertUtils { throw new IllegalArgumentException("Fail to decode certificate", e); } } + + /** Decodes a PKCS#8 encoded RSA private key */ + public static RSAPrivateKey privateKeyFromByteArray(byte[] pkcs8Encoded) { + Objects.requireNonNull(pkcs8Encoded, "pkcs8Encoded was null"); + PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(pkcs8Encoded); + + try { + KeyFactory keyFactory = KeyFactory.getInstance(PRIVATE_KEY_TYPE_RSA); + + return (RSAPrivateKey) keyFactory.generatePrivate(privateKeySpec); + } catch (NoSuchAlgorithmException | InvalidKeySpecException e) { + throw new IllegalArgumentException("Fail to decode PrivateKey", e); + } + } } diff --git a/core/java/android/net/vcn/persistablebundleutils/IkeSessionParamsUtils.java b/core/java/android/net/vcn/persistablebundleutils/IkeSessionParamsUtils.java new file mode 100644 index 000000000000..9d3462cb0b2e --- /dev/null +++ b/core/java/android/net/vcn/persistablebundleutils/IkeSessionParamsUtils.java @@ -0,0 +1,513 @@ +/* + * Copyright (C) 2021 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 android.net.vcn.persistablebundleutils; + +import static android.system.OsConstants.AF_INET; +import static android.system.OsConstants.AF_INET6; + +import static com.android.internal.annotations.VisibleForTesting.Visibility; + +import android.annotation.NonNull; +import android.annotation.Nullable; +import android.net.InetAddresses; +import android.net.eap.EapSessionConfig; +import android.net.ipsec.ike.IkeSaProposal; +import android.net.ipsec.ike.IkeSessionParams; +import android.net.ipsec.ike.IkeSessionParams.ConfigRequestIpv4PcscfServer; +import android.net.ipsec.ike.IkeSessionParams.ConfigRequestIpv6PcscfServer; +import android.net.ipsec.ike.IkeSessionParams.IkeAuthConfig; +import android.net.ipsec.ike.IkeSessionParams.IkeAuthDigitalSignLocalConfig; +import android.net.ipsec.ike.IkeSessionParams.IkeAuthDigitalSignRemoteConfig; +import android.net.ipsec.ike.IkeSessionParams.IkeAuthEapConfig; +import android.net.ipsec.ike.IkeSessionParams.IkeAuthPskConfig; +import android.net.ipsec.ike.IkeSessionParams.IkeConfigRequest; +import android.os.PersistableBundle; +import android.util.ArraySet; + +import com.android.internal.annotations.VisibleForTesting; +import com.android.server.vcn.util.PersistableBundleUtils; + +import java.net.InetAddress; +import java.security.PrivateKey; +import java.security.cert.CertificateEncodingException; +import java.security.cert.X509Certificate; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Objects; +import java.util.Set; + +/** + * Abstract utility class to convert IkeSessionParams to/from PersistableBundle. + * + * @hide + */ +@VisibleForTesting(visibility = Visibility.PRIVATE) +public final class IkeSessionParamsUtils { + private static final String SERVER_HOST_NAME_KEY = "SERVER_HOST_NAME_KEY"; + private static final String SA_PROPOSALS_KEY = "SA_PROPOSALS_KEY"; + private static final String LOCAL_ID_KEY = "LOCAL_ID_KEY"; + private static final String REMOTE_ID_KEY = "REMOTE_ID_KEY"; + private static final String LOCAL_AUTH_KEY = "LOCAL_AUTH_KEY"; + private static final String REMOTE_AUTH_KEY = "REMOTE_AUTH_KEY"; + private static final String CONFIG_REQUESTS_KEY = "CONFIG_REQUESTS_KEY"; + private static final String RETRANS_TIMEOUTS_KEY = "RETRANS_TIMEOUTS_KEY"; + private static final String HARD_LIFETIME_SEC_KEY = "HARD_LIFETIME_SEC_KEY"; + private static final String SOFT_LIFETIME_SEC_KEY = "SOFT_LIFETIME_SEC_KEY"; + private static final String DPD_DELAY_SEC_KEY = "DPD_DELAY_SEC_KEY"; + private static final String NATT_KEEPALIVE_DELAY_SEC_KEY = "NATT_KEEPALIVE_DELAY_SEC_KEY"; + private static final String IKE_OPTIONS_KEY = "IKE_OPTIONS_KEY"; + + private static final Set<Integer> IKE_OPTIONS = new ArraySet<>(); + + static { + IKE_OPTIONS.add(IkeSessionParams.IKE_OPTION_ACCEPT_ANY_REMOTE_ID); + IKE_OPTIONS.add(IkeSessionParams.IKE_OPTION_EAP_ONLY_AUTH); + IKE_OPTIONS.add(IkeSessionParams.IKE_OPTION_MOBIKE); + } + + /** Serializes an IkeSessionParams to a PersistableBundle. */ + @NonNull + public static PersistableBundle toPersistableBundle(@NonNull IkeSessionParams params) { + if (params.getConfiguredNetwork() != null || params.getIke3gppExtension() != null) { + throw new IllegalStateException( + "Cannot convert a IkeSessionParams with a caller configured network or with" + + " 3GPP extension enabled"); + } + + final PersistableBundle result = new PersistableBundle(); + + result.putString(SERVER_HOST_NAME_KEY, params.getServerHostname()); + + final PersistableBundle saProposalBundle = + PersistableBundleUtils.fromList( + params.getSaProposals(), IkeSaProposalUtils::toPersistableBundle); + result.putPersistableBundle(SA_PROPOSALS_KEY, saProposalBundle); + + result.putPersistableBundle( + LOCAL_ID_KEY, + IkeIdentificationUtils.toPersistableBundle(params.getLocalIdentification())); + result.putPersistableBundle( + REMOTE_ID_KEY, + IkeIdentificationUtils.toPersistableBundle(params.getRemoteIdentification())); + + result.putPersistableBundle( + LOCAL_AUTH_KEY, AuthConfigUtils.toPersistableBundle(params.getLocalAuthConfig())); + result.putPersistableBundle( + REMOTE_AUTH_KEY, AuthConfigUtils.toPersistableBundle(params.getRemoteAuthConfig())); + + final List<ConfigRequest> reqList = new ArrayList<>(); + for (IkeConfigRequest req : params.getConfigurationRequests()) { + reqList.add(new ConfigRequest(req)); + } + final PersistableBundle configReqListBundle = + PersistableBundleUtils.fromList(reqList, ConfigRequest::toPersistableBundle); + result.putPersistableBundle(CONFIG_REQUESTS_KEY, configReqListBundle); + + result.putIntArray(RETRANS_TIMEOUTS_KEY, params.getRetransmissionTimeoutsMillis()); + result.putInt(HARD_LIFETIME_SEC_KEY, params.getHardLifetimeSeconds()); + result.putInt(SOFT_LIFETIME_SEC_KEY, params.getSoftLifetimeSeconds()); + result.putInt(DPD_DELAY_SEC_KEY, params.getDpdDelaySeconds()); + result.putInt(NATT_KEEPALIVE_DELAY_SEC_KEY, params.getNattKeepAliveDelaySeconds()); + + final List<Integer> enabledIkeOptions = new ArrayList<>(); + for (int option : IKE_OPTIONS) { + if (params.hasIkeOption(option)) { + enabledIkeOptions.add(option); + } + } + + final int[] optionArray = enabledIkeOptions.stream().mapToInt(i -> i).toArray(); + result.putIntArray(IKE_OPTIONS_KEY, optionArray); + + return result; + } + + /** Constructs an IkeSessionParams by deserializing a PersistableBundle. */ + @NonNull + public static IkeSessionParams fromPersistableBundle(@NonNull PersistableBundle in) { + Objects.requireNonNull(in, "PersistableBundle is null"); + + final IkeSessionParams.Builder builder = new IkeSessionParams.Builder(); + + builder.setServerHostname(in.getString(SERVER_HOST_NAME_KEY)); + + PersistableBundle proposalBundle = in.getPersistableBundle(SA_PROPOSALS_KEY); + Objects.requireNonNull(in, "SA Proposals was null"); + List<IkeSaProposal> saProposals = + PersistableBundleUtils.toList( + proposalBundle, IkeSaProposalUtils::fromPersistableBundle); + for (IkeSaProposal proposal : saProposals) { + builder.addSaProposal(proposal); + } + + builder.setLocalIdentification( + IkeIdentificationUtils.fromPersistableBundle( + in.getPersistableBundle(LOCAL_ID_KEY))); + builder.setRemoteIdentification( + IkeIdentificationUtils.fromPersistableBundle( + in.getPersistableBundle(REMOTE_ID_KEY))); + + AuthConfigUtils.setBuilderByReadingPersistableBundle( + in.getPersistableBundle(LOCAL_AUTH_KEY), + in.getPersistableBundle(REMOTE_AUTH_KEY), + builder); + + builder.setRetransmissionTimeoutsMillis(in.getIntArray(RETRANS_TIMEOUTS_KEY)); + builder.setLifetimeSeconds( + in.getInt(HARD_LIFETIME_SEC_KEY), in.getInt(SOFT_LIFETIME_SEC_KEY)); + builder.setDpdDelaySeconds(in.getInt(DPD_DELAY_SEC_KEY)); + builder.setNattKeepAliveDelaySeconds(in.getInt(NATT_KEEPALIVE_DELAY_SEC_KEY)); + + final PersistableBundle configReqListBundle = in.getPersistableBundle(CONFIG_REQUESTS_KEY); + Objects.requireNonNull(configReqListBundle, "Config request list was null"); + final List<ConfigRequest> reqList = + PersistableBundleUtils.toList(configReqListBundle, ConfigRequest::new); + for (ConfigRequest req : reqList) { + switch (req.type) { + case ConfigRequest.IPV4_P_CSCF_ADDRESS: + if (req.address == null) { + builder.addPcscfServerRequest(AF_INET); + } else { + builder.addPcscfServerRequest(req.address); + } + break; + case ConfigRequest.IPV6_P_CSCF_ADDRESS: + if (req.address == null) { + builder.addPcscfServerRequest(AF_INET6); + } else { + builder.addPcscfServerRequest(req.address); + } + break; + default: + throw new IllegalArgumentException( + "Unrecognized config request type: " + req.type); + } + } + + // Clear IKE Options that are by default enabled + for (int option : IKE_OPTIONS) { + builder.removeIkeOption(option); + } + + final int[] optionArray = in.getIntArray(IKE_OPTIONS_KEY); + for (int option : optionArray) { + builder.addIkeOption(option); + } + + return builder.build(); + } + + private static final class AuthConfigUtils { + private static final int IKE_AUTH_METHOD_PSK = 1; + private static final int IKE_AUTH_METHOD_PUB_KEY_SIGNATURE = 2; + private static final int IKE_AUTH_METHOD_EAP = 3; + + private static final String AUTH_METHOD_KEY = "AUTH_METHOD_KEY"; + + @NonNull + public static PersistableBundle toPersistableBundle(@NonNull IkeAuthConfig authConfig) { + if (authConfig instanceof IkeAuthPskConfig) { + IkeAuthPskConfig config = (IkeAuthPskConfig) authConfig; + return IkeAuthPskConfigUtils.toPersistableBundle( + config, createPersistableBundle(IKE_AUTH_METHOD_PSK)); + } else if (authConfig instanceof IkeAuthDigitalSignLocalConfig) { + IkeAuthDigitalSignLocalConfig config = (IkeAuthDigitalSignLocalConfig) authConfig; + return IkeAuthDigitalSignConfigUtils.toPersistableBundle( + config, createPersistableBundle(IKE_AUTH_METHOD_PUB_KEY_SIGNATURE)); + } else if (authConfig instanceof IkeAuthDigitalSignRemoteConfig) { + IkeAuthDigitalSignRemoteConfig config = (IkeAuthDigitalSignRemoteConfig) authConfig; + return IkeAuthDigitalSignConfigUtils.toPersistableBundle( + config, createPersistableBundle(IKE_AUTH_METHOD_PUB_KEY_SIGNATURE)); + } else if (authConfig instanceof IkeAuthEapConfig) { + IkeAuthEapConfig config = (IkeAuthEapConfig) authConfig; + return IkeAuthEapConfigUtils.toPersistableBundle( + config, createPersistableBundle(IKE_AUTH_METHOD_EAP)); + } else { + throw new IllegalStateException("Invalid IkeAuthConfig subclass"); + } + } + + private static PersistableBundle createPersistableBundle(int type) { + final PersistableBundle result = new PersistableBundle(); + result.putInt(AUTH_METHOD_KEY, type); + return result; + } + + public static void setBuilderByReadingPersistableBundle( + @NonNull PersistableBundle localAuthBundle, + @NonNull PersistableBundle remoteAuthBundle, + @NonNull IkeSessionParams.Builder builder) { + Objects.requireNonNull(localAuthBundle, "localAuthBundle was null"); + Objects.requireNonNull(remoteAuthBundle, "remoteAuthBundle was null"); + + final int localMethodType = localAuthBundle.getInt(AUTH_METHOD_KEY); + final int remoteMethodType = remoteAuthBundle.getInt(AUTH_METHOD_KEY); + switch (localMethodType) { + case IKE_AUTH_METHOD_PSK: + if (remoteMethodType != IKE_AUTH_METHOD_PSK) { + throw new IllegalArgumentException( + "Expect remote auth method to be PSK based, but was " + + remoteMethodType); + } + IkeAuthPskConfigUtils.setBuilderByReadingPersistableBundle( + localAuthBundle, remoteAuthBundle, builder); + return; + case IKE_AUTH_METHOD_PUB_KEY_SIGNATURE: + if (remoteMethodType != IKE_AUTH_METHOD_PUB_KEY_SIGNATURE) { + throw new IllegalArgumentException( + "Expect remote auth method to be digital signature based, but was " + + remoteMethodType); + } + IkeAuthDigitalSignConfigUtils.setBuilderByReadingPersistableBundle( + localAuthBundle, remoteAuthBundle, builder); + return; + case IKE_AUTH_METHOD_EAP: + if (remoteMethodType != IKE_AUTH_METHOD_PUB_KEY_SIGNATURE) { + throw new IllegalArgumentException( + "When using EAP for local authentication, expect remote auth" + + " method to be digital signature based, but was " + + remoteMethodType); + } + IkeAuthEapConfigUtils.setBuilderByReadingPersistableBundle( + localAuthBundle, remoteAuthBundle, builder); + return; + default: + throw new IllegalArgumentException( + "Invalid EAP method type " + localMethodType); + } + } + } + + private static final class IkeAuthPskConfigUtils { + private static final String PSK_KEY = "PSK_KEY"; + + @NonNull + public static PersistableBundle toPersistableBundle( + @NonNull IkeAuthPskConfig config, @NonNull PersistableBundle result) { + result.putPersistableBundle( + PSK_KEY, PersistableBundleUtils.fromByteArray(config.getPsk())); + return result; + } + + public static void setBuilderByReadingPersistableBundle( + @NonNull PersistableBundle localAuthBundle, + @NonNull PersistableBundle remoteAuthBundle, + @NonNull IkeSessionParams.Builder builder) { + Objects.requireNonNull(localAuthBundle, "localAuthBundle was null"); + Objects.requireNonNull(remoteAuthBundle, "remoteAuthBundle was null"); + + final PersistableBundle localPskBundle = localAuthBundle.getPersistableBundle(PSK_KEY); + final PersistableBundle remotePskBundle = + remoteAuthBundle.getPersistableBundle(PSK_KEY); + Objects.requireNonNull(localAuthBundle, "Local PSK was null"); + Objects.requireNonNull(remoteAuthBundle, "Remote PSK was null"); + + final byte[] localPsk = PersistableBundleUtils.toByteArray(localPskBundle); + final byte[] remotePsk = PersistableBundleUtils.toByteArray(remotePskBundle); + if (!Arrays.equals(localPsk, remotePsk)) { + throw new IllegalArgumentException("Local PSK and remote PSK are different"); + } + builder.setAuthPsk(localPsk); + } + } + + private static class IkeAuthDigitalSignConfigUtils { + private static final String END_CERT_KEY = "END_CERT_KEY"; + private static final String INTERMEDIATE_CERTS_KEY = "INTERMEDIATE_CERTS_KEY"; + private static final String PRIVATE_KEY_KEY = "PRIVATE_KEY_KEY"; + private static final String TRUST_CERT_KEY = "TRUST_CERT_KEY"; + + @NonNull + public static PersistableBundle toPersistableBundle( + @NonNull IkeAuthDigitalSignLocalConfig config, @NonNull PersistableBundle result) { + try { + result.putPersistableBundle( + END_CERT_KEY, + PersistableBundleUtils.fromByteArray( + config.getClientEndCertificate().getEncoded())); + + final List<X509Certificate> certList = config.getIntermediateCertificates(); + final List<byte[]> encodedCertList = new ArrayList<>(certList.size()); + for (X509Certificate cert : certList) { + encodedCertList.add(cert.getEncoded()); + } + + final PersistableBundle certsBundle = + PersistableBundleUtils.fromList( + encodedCertList, PersistableBundleUtils::fromByteArray); + result.putPersistableBundle(INTERMEDIATE_CERTS_KEY, certsBundle); + } catch (CertificateEncodingException e) { + throw new IllegalArgumentException("Fail to encode certificate"); + } + + // TODO: b/170670506 Consider putting PrivateKey in Android KeyStore + result.putPersistableBundle( + PRIVATE_KEY_KEY, + PersistableBundleUtils.fromByteArray(config.getPrivateKey().getEncoded())); + return result; + } + + @NonNull + public static PersistableBundle toPersistableBundle( + @NonNull IkeAuthDigitalSignRemoteConfig config, @NonNull PersistableBundle result) { + try { + X509Certificate caCert = config.getRemoteCaCert(); + if (caCert != null) { + result.putPersistableBundle( + TRUST_CERT_KEY, + PersistableBundleUtils.fromByteArray(caCert.getEncoded())); + } + } catch (CertificateEncodingException e) { + throw new IllegalArgumentException("Fail to encode the certificate"); + } + + return result; + } + + public static void setBuilderByReadingPersistableBundle( + @NonNull PersistableBundle localAuthBundle, + @NonNull PersistableBundle remoteAuthBundle, + @NonNull IkeSessionParams.Builder builder) { + Objects.requireNonNull(localAuthBundle, "localAuthBundle was null"); + Objects.requireNonNull(remoteAuthBundle, "remoteAuthBundle was null"); + + // Deserialize localAuth + final PersistableBundle endCertBundle = + localAuthBundle.getPersistableBundle(END_CERT_KEY); + Objects.requireNonNull(endCertBundle, "End cert was null"); + final byte[] encodedCert = PersistableBundleUtils.toByteArray(endCertBundle); + final X509Certificate endCert = CertUtils.certificateFromByteArray(encodedCert); + + final PersistableBundle certsBundle = + localAuthBundle.getPersistableBundle(INTERMEDIATE_CERTS_KEY); + Objects.requireNonNull(certsBundle, "Intermediate certs was null"); + final List<byte[]> encodedCertList = + PersistableBundleUtils.toList(certsBundle, PersistableBundleUtils::toByteArray); + final List<X509Certificate> certList = new ArrayList<>(encodedCertList.size()); + for (byte[] encoded : encodedCertList) { + certList.add(CertUtils.certificateFromByteArray(encoded)); + } + + final PersistableBundle privateKeyBundle = + localAuthBundle.getPersistableBundle(PRIVATE_KEY_KEY); + Objects.requireNonNull(privateKeyBundle, "PrivateKey bundle was null"); + final PrivateKey privateKey = + CertUtils.privateKeyFromByteArray( + PersistableBundleUtils.toByteArray(privateKeyBundle)); + + // Deserialize remoteAuth + final PersistableBundle trustCertBundle = + remoteAuthBundle.getPersistableBundle(TRUST_CERT_KEY); + + X509Certificate caCert = null; + if (trustCertBundle != null) { + final byte[] encodedCaCert = PersistableBundleUtils.toByteArray(trustCertBundle); + caCert = CertUtils.certificateFromByteArray(encodedCaCert); + } + + builder.setAuthDigitalSignature(caCert, endCert, certList, privateKey); + } + } + + private static final class IkeAuthEapConfigUtils { + private static final String EAP_CONFIG_KEY = "EAP_CONFIG_KEY"; + + @NonNull + public static PersistableBundle toPersistableBundle( + @NonNull IkeAuthEapConfig config, @NonNull PersistableBundle result) { + result.putPersistableBundle( + EAP_CONFIG_KEY, + EapSessionConfigUtils.toPersistableBundle(config.getEapConfig())); + return result; + } + + public static void setBuilderByReadingPersistableBundle( + @NonNull PersistableBundle localAuthBundle, + @NonNull PersistableBundle remoteAuthBundle, + @NonNull IkeSessionParams.Builder builder) { + // Deserialize localAuth + final PersistableBundle eapBundle = + localAuthBundle.getPersistableBundle(EAP_CONFIG_KEY); + Objects.requireNonNull(eapBundle, "EAP Config was null"); + final EapSessionConfig eapConfig = + EapSessionConfigUtils.fromPersistableBundle(eapBundle); + + // Deserialize remoteAuth + final PersistableBundle trustCertBundle = + remoteAuthBundle.getPersistableBundle( + IkeAuthDigitalSignConfigUtils.TRUST_CERT_KEY); + + X509Certificate serverCaCert = null; + if (trustCertBundle != null) { + final byte[] encodedCaCert = PersistableBundleUtils.toByteArray(trustCertBundle); + serverCaCert = CertUtils.certificateFromByteArray(encodedCaCert); + } + builder.setAuthEap(serverCaCert, eapConfig); + } + } + + private static final class ConfigRequest { + private static final int IPV4_P_CSCF_ADDRESS = 1; + private static final int IPV6_P_CSCF_ADDRESS = 2; + + private static final String TYPE_KEY = "type"; + private static final String ADDRESS_KEY = "address"; + + public final int type; + + // Null when it is an empty request + @Nullable public final InetAddress address; + + ConfigRequest(IkeConfigRequest config) { + if (config instanceof ConfigRequestIpv4PcscfServer) { + type = IPV4_P_CSCF_ADDRESS; + address = ((ConfigRequestIpv4PcscfServer) config).getAddress(); + } else if (config instanceof ConfigRequestIpv6PcscfServer) { + type = IPV6_P_CSCF_ADDRESS; + address = ((ConfigRequestIpv6PcscfServer) config).getAddress(); + } else { + throw new IllegalStateException("Unknown TunnelModeChildConfigRequest"); + } + } + + ConfigRequest(PersistableBundle in) { + Objects.requireNonNull(in, "PersistableBundle was null"); + + type = in.getInt(TYPE_KEY); + + String addressStr = in.getString(ADDRESS_KEY); + if (addressStr == null) { + address = null; + } else { + address = InetAddresses.parseNumericAddress(addressStr); + } + } + + @NonNull + public PersistableBundle toPersistableBundle() { + final PersistableBundle result = new PersistableBundle(); + + result.putInt(TYPE_KEY, type); + if (address != null) { + result.putString(ADDRESS_KEY, address.getHostAddress()); + } + + return result; + } + } +} |