| /* |
| * Copyright 2013 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. |
| */ |
| |
| /* |
| * Copyright 2016 The Netty Project |
| * |
| * The Netty Project licenses this file to you 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 org.conscrypt; |
| |
| import static javax.net.ssl.SSLEngineResult.HandshakeStatus.FINISHED; |
| import static javax.net.ssl.SSLEngineResult.HandshakeStatus.NEED_UNWRAP; |
| import static javax.net.ssl.SSLEngineResult.HandshakeStatus.NEED_WRAP; |
| import static javax.net.ssl.SSLEngineResult.HandshakeStatus.NOT_HANDSHAKING; |
| import static javax.net.ssl.SSLEngineResult.Status.BUFFER_OVERFLOW; |
| import static javax.net.ssl.SSLEngineResult.Status.BUFFER_UNDERFLOW; |
| import static javax.net.ssl.SSLEngineResult.Status.CLOSED; |
| import static javax.net.ssl.SSLEngineResult.Status.OK; |
| import static org.conscrypt.NativeConstants.SSL3_RT_HEADER_LENGTH; |
| import static org.conscrypt.NativeConstants.SSL3_RT_MAX_PACKET_SIZE; |
| import static org.conscrypt.NativeConstants.SSL3_RT_MAX_PLAIN_LENGTH; |
| import static org.conscrypt.NativeConstants.SSL_CB_HANDSHAKE_DONE; |
| import static org.conscrypt.NativeConstants.SSL_CB_HANDSHAKE_START; |
| import static org.conscrypt.NativeConstants.SSL_ERROR_WANT_READ; |
| import static org.conscrypt.NativeConstants.SSL_ERROR_WANT_WRITE; |
| import static org.conscrypt.NativeConstants.SSL_ERROR_ZERO_RETURN; |
| import static org.conscrypt.NativeConstants.SSL_RECEIVED_SHUTDOWN; |
| import static org.conscrypt.NativeConstants.SSL_SENT_SHUTDOWN; |
| import static org.conscrypt.Preconditions.checkArgument; |
| import static org.conscrypt.Preconditions.checkNotNull; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_CLOSED; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_CLOSED_INBOUND; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_CLOSED_OUTBOUND; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_HANDSHAKE_COMPLETED; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_HANDSHAKE_STARTED; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_MODE_SET; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_NEW; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_READY; |
| import static org.conscrypt.SSLUtils.EngineStates.STATE_READY_HANDSHAKE_CUT_THROUGH; |
| import static org.conscrypt.SSLUtils.calculateOutNetBufSize; |
| import static org.conscrypt.SSLUtils.toSSLHandshakeException; |
| |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.io.InterruptedIOException; |
| import java.nio.ByteBuffer; |
| import java.nio.ReadOnlyBufferException; |
| import java.security.InvalidKeyException; |
| import java.security.PrivateKey; |
| import java.security.cert.CertificateEncodingException; |
| import java.security.cert.CertificateException; |
| import java.security.interfaces.ECKey; |
| import java.security.spec.ECParameterSpec; |
| import javax.crypto.SecretKey; |
| import javax.net.ssl.SSLEngine; |
| import javax.net.ssl.SSLEngineResult; |
| import javax.net.ssl.SSLEngineResult.HandshakeStatus; |
| import javax.net.ssl.SSLEngineResult.Status; |
| import javax.net.ssl.SSLException; |
| import javax.net.ssl.SSLHandshakeException; |
| import javax.net.ssl.SSLParameters; |
| import javax.net.ssl.SSLSession; |
| import javax.net.ssl.X509ExtendedKeyManager; |
| import javax.net.ssl.X509KeyManager; |
| import javax.net.ssl.X509TrustManager; |
| import javax.security.auth.x500.X500Principal; |
| |
| /** |
| * Implements the {@link SSLEngine} API using OpenSSL's non-blocking interfaces. |
| */ |
| final class ConscryptEngine extends SSLEngine implements NativeCrypto.SSLHandshakeCallbacks, |
| SSLParametersImpl.AliasChooser, |
| SSLParametersImpl.PSKCallbacks { |
| private static final SSLEngineResult NEED_UNWRAP_OK = |
| new SSLEngineResult(OK, NEED_UNWRAP, 0, 0); |
| private static final SSLEngineResult NEED_UNWRAP_CLOSED = |
| new SSLEngineResult(CLOSED, NEED_UNWRAP, 0, 0); |
| private static final SSLEngineResult NEED_WRAP_OK = new SSLEngineResult(OK, NEED_WRAP, 0, 0); |
| private static final SSLEngineResult NEED_WRAP_CLOSED = |
| new SSLEngineResult(CLOSED, NEED_WRAP, 0, 0); |
| private static final SSLEngineResult CLOSED_NOT_HANDSHAKING = |
| new SSLEngineResult(CLOSED, NOT_HANDSHAKING, 0, 0); |
| private static final ByteBuffer EMPTY = ByteBuffer.allocateDirect(0); |
| |
| /** |
| * Hostname used with the TLS extension SNI hostname. |
| */ |
| private String peerHostname; |
| |
| private final SSLParametersImpl sslParameters; |
| |
| /** |
| * Protects {@link #engineState} and {@link #handshakeFinished}. |
| */ |
| private final Object stateLock = new Object(); |
| |
| // @GuardedBy("stateLock"); |
| private int engineState = STATE_NEW; |
| private boolean handshakeFinished; |
| |
| /** |
| * Protected by synchronizing on stateLock. Starts as 0, set by startHandshake, reset to 0 on |
| * close. |
| */ |
| // @GuardedBy("stateLock"); |
| private long sslNativePointer; |
| |
| /** |
| * Protected by synchronizing on stateLock. Starts as 0, set by startHandshake, reset to 0 on |
| * close. |
| */ |
| // @GuardedBy("stateLock"); |
| private long networkBio; |
| |
| /** |
| * Set during startHandshake. |
| */ |
| private AbstractOpenSSLSession sslSession; |
| |
| /** |
| * Used during handshake callbacks. |
| */ |
| private AbstractOpenSSLSession handshakeSession; |
| |
| /** |
| * Private key for the TLS Channel ID extension. This field is client-side only. Set during |
| * startHandshake. |
| */ |
| private OpenSSLKey channelIdPrivateKey; |
| |
| private int maxSealOverhead; |
| |
| private HandshakeListener handshakeListener; |
| |
| private final ByteBuffer[] singleSrcBuffer = new ByteBuffer[1]; |
| private final ByteBuffer[] singleDstBuffer = new ByteBuffer[1]; |
| private final PeerInfoProvider peerInfoProvider; |
| |
| private SSLException handshakeException; |
| |
| ConscryptEngine(SSLParametersImpl sslParameters) { |
| this.sslParameters = sslParameters; |
| peerInfoProvider = PeerInfoProvider.nullProvider(); |
| } |
| |
| ConscryptEngine(final String host, final int port, SSLParametersImpl sslParameters) { |
| this.sslParameters = sslParameters; |
| this.peerInfoProvider = PeerInfoProvider.forHostAndPort(host, port); |
| } |
| |
| ConscryptEngine(SSLParametersImpl sslParameters, PeerInfoProvider peerInfoProvider) { |
| this.sslParameters = sslParameters; |
| this.peerInfoProvider = checkNotNull(peerInfoProvider, "peerInfoProvider"); |
| } |
| |
| /** |
| * Returns the maximum overhead, in bytes, of sealing a record with SSL. |
| */ |
| int maxSealOverhead() { |
| return maxSealOverhead; |
| } |
| |
| /** |
| * Enables/disables TLS Channel ID for this server engine. |
| * |
| * <p>This method needs to be invoked before the handshake starts. |
| * |
| * @throws IllegalStateException if this is a client engine or if the handshake has already |
| * started. |
| */ |
| void setChannelIdEnabled(boolean enabled) { |
| synchronized (stateLock) { |
| if (getUseClientMode()) { |
| throw new IllegalStateException("Not allowed in client mode"); |
| } |
| if (isHandshakeStarted()) { |
| throw new IllegalStateException( |
| "Could not enable/disable Channel ID after the initial handshake has begun."); |
| } |
| sslParameters.channelIdEnabled = enabled; |
| } |
| } |
| |
| /** |
| * Gets the TLS Channel ID for this server engine. Channel ID is only available once the |
| * handshake completes. |
| * |
| * @return channel ID or {@code null} if not available. |
| * |
| * @throws IllegalStateException if this is a client engine or if the handshake has not yet |
| * completed. |
| * @throws SSLException if channel ID is available but could not be obtained. |
| */ |
| byte[] getChannelId() throws SSLException { |
| synchronized (stateLock) { |
| if (getUseClientMode()) { |
| throw new IllegalStateException("Not allowed in client mode"); |
| } |
| |
| if (isHandshakeStarted()) { |
| throw new IllegalStateException( |
| "Channel ID is only available after handshake completes"); |
| } |
| return NativeCrypto.SSL_get_tls_channel_id(sslNativePointer); |
| } |
| } |
| |
| /** |
| * Sets the {@link PrivateKey} to be used for TLS Channel ID by this client engine. |
| * |
| * <p>This method needs to be invoked before the handshake starts. |
| * |
| * @param privateKey private key (enables TLS Channel ID) or {@code null} for no key (disables |
| * TLS Channel ID). The private key must be an Elliptic Curve (EC) key based on the NIST |
| * P-256 curve (aka SECG secp256r1 or ANSI X9.62 prime256v1). |
| * |
| * @throws IllegalStateException if this is a server engine or if the handshake has already |
| * started. |
| */ |
| void setChannelIdPrivateKey(PrivateKey privateKey) { |
| if (!getUseClientMode()) { |
| throw new IllegalStateException("Not allowed in server mode"); |
| } |
| |
| synchronized (stateLock) { |
| if (isHandshakeStarted()) { |
| throw new IllegalStateException("Could not change Channel ID private key " |
| + "after the initial handshake has begun."); |
| } |
| |
| if (privateKey == null) { |
| sslParameters.channelIdEnabled = false; |
| channelIdPrivateKey = null; |
| return; |
| } |
| |
| sslParameters.channelIdEnabled = true; |
| try { |
| ECParameterSpec ecParams = null; |
| if (privateKey instanceof ECKey) { |
| ecParams = ((ECKey) privateKey).getParams(); |
| } |
| if (ecParams == null) { |
| // Assume this is a P-256 key, as specified in the contract of this method. |
| ecParams = |
| OpenSSLECGroupContext.getCurveByName("prime256v1").getECParameterSpec(); |
| } |
| channelIdPrivateKey = |
| OpenSSLKey.fromECPrivateKeyForTLSStackOnly(privateKey, ecParams); |
| } catch (InvalidKeyException e) { |
| // Will have error in startHandshake |
| } |
| } |
| } |
| |
| /** |
| * Sets the listener for the completion of the TLS handshake. |
| */ |
| void setHandshakeListener(HandshakeListener handshakeListener) { |
| synchronized (stateLock) { |
| if (isHandshakeStarted()) { |
| throw new IllegalStateException( |
| "Handshake listener must be set before starting the handshake."); |
| } |
| this.handshakeListener = handshakeListener; |
| } |
| } |
| |
| private boolean isHandshakeStarted() { |
| switch (engineState) { |
| case STATE_NEW: |
| case STATE_MODE_SET: |
| return false; |
| default: |
| return true; |
| } |
| } |
| |
| /** |
| * This method enables Server Name Indication (SNI) and overrides the hostname supplied |
| * during engine creation. |
| */ |
| void setHostname(String hostname) { |
| sslParameters.setUseSni(hostname != null); |
| this.peerHostname = hostname; |
| } |
| |
| /** |
| * Returns either the hostname supplied during engine creation or via |
| * {@link #setHostname(String)}. No DNS resolution is attempted before |
| * returning the hostname. |
| */ |
| String getHostname() { |
| return peerHostname; |
| } |
| |
| @Override |
| public String getPeerHost() { |
| return peerHostname != null ? peerHostname : peerInfoProvider.getHostnameOrIP(); |
| } |
| |
| @Override |
| public int getPeerPort() { |
| return peerInfoProvider.getPort(); |
| } |
| |
| @Override |
| public void beginHandshake() throws SSLException { |
| synchronized (stateLock) { |
| beginHandshakeInternal(); |
| } |
| } |
| |
| private void beginHandshakeInternal() throws SSLException { |
| switch (engineState) { |
| case STATE_MODE_SET: |
| // This is the only allowed state. |
| break; |
| case STATE_HANDSHAKE_STARTED: |
| throw new IllegalStateException("Handshake has already been started"); |
| case STATE_CLOSED_INBOUND: |
| case STATE_CLOSED_OUTBOUND: |
| case STATE_CLOSED: |
| throw new IllegalStateException("Engine has already been closed"); |
| default: |
| throw new IllegalStateException("Client/server mode must be set before handshake"); |
| } |
| |
| engineState = STATE_HANDSHAKE_STARTED; |
| |
| boolean releaseResources = true; |
| try { |
| final AbstractSessionContext sessionContext = sslParameters.getSessionContext(); |
| sslNativePointer = NativeCrypto.SSL_new(sessionContext.sslCtxNativePointer); |
| networkBio = NativeCrypto.SSL_BIO_new(sslNativePointer); |
| |
| // Allow servers to trigger renegotiation. Some inadvisable server |
| // configurations cause them to attempt to renegotiate during |
| // certain protocols. |
| NativeCrypto.SSL_accept_renegotiations(sslNativePointer); |
| |
| if (getUseClientMode()) { |
| NativeCrypto.SSL_set_connect_state(sslNativePointer); |
| |
| // Configure OCSP and CT extensions for client |
| NativeCrypto.SSL_enable_ocsp_stapling(sslNativePointer); |
| if (sslParameters.isCTVerificationEnabled(getHostname())) { |
| NativeCrypto.SSL_enable_signed_cert_timestamps(sslNativePointer); |
| } |
| } else { |
| NativeCrypto.SSL_set_accept_state(sslNativePointer); |
| |
| // Configure OCSP for server |
| if (sslParameters.getOCSPResponse() != null) { |
| NativeCrypto.SSL_enable_ocsp_stapling(sslNativePointer); |
| } |
| } |
| |
| sslSession = |
| sslParameters.getSessionToReuse(sslNativePointer, getPeerHost(), getPeerPort()); |
| |
| sslParameters.setSSLParameters(sslNativePointer, this, this, getHostname()); |
| sslParameters.setCertificateValidation(sslNativePointer); |
| sslParameters.setTlsChannelId(sslNativePointer, channelIdPrivateKey); |
| |
| maxSealOverhead = NativeCrypto.SSL_max_seal_overhead(sslNativePointer); |
| handshake(); |
| releaseResources = false; |
| } catch (IOException e) { |
| // Write CCS errors to EventLog |
| String message = e.getMessage(); |
| // Must match error reason string of SSL_R_UNEXPECTED_CCS (in ssl/ssl_err.c) |
| if (message.contains("unexpected CCS")) { |
| String logMessage = String.format("ssl_unexpected_ccs: host=%s", getPeerHost()); |
| Platform.logEvent(logMessage); |
| } |
| throw SSLUtils.toSSLHandshakeException(e); |
| } finally { |
| if (releaseResources) { |
| engineState = STATE_CLOSED; |
| shutdownAndFreeSslNative(); |
| } |
| } |
| } |
| |
| @Override |
| public void closeInbound() throws SSLException { |
| synchronized (stateLock) { |
| if (engineState == STATE_CLOSED) { |
| return; |
| } |
| if (engineState == STATE_CLOSED_OUTBOUND) { |
| engineState = STATE_CLOSED; |
| } else { |
| engineState = STATE_CLOSED_INBOUND; |
| } |
| } |
| // TODO anything else to notify OpenSSL layer? |
| } |
| |
| @Override |
| public void closeOutbound() { |
| synchronized (stateLock) { |
| if (engineState == STATE_CLOSED || engineState == STATE_CLOSED_OUTBOUND) { |
| return; |
| } |
| if (isHandshakeStarted()) { |
| shutdownAndFreeSslNative(); |
| } |
| if (engineState == STATE_CLOSED_INBOUND) { |
| engineState = STATE_CLOSED; |
| } else { |
| engineState = STATE_CLOSED_OUTBOUND; |
| } |
| } |
| shutdown(); |
| } |
| |
| @Override |
| public Runnable getDelegatedTask() { |
| // This implementation doesn't use any delegated tasks. |
| return null; |
| } |
| |
| @Override |
| public String[] getEnabledCipherSuites() { |
| return sslParameters.getEnabledCipherSuites(); |
| } |
| |
| @Override |
| public String[] getEnabledProtocols() { |
| return sslParameters.getEnabledProtocols(); |
| } |
| |
| @Override |
| public boolean getEnableSessionCreation() { |
| return sslParameters.getEnableSessionCreation(); |
| } |
| |
| @Override |
| public SSLParameters getSSLParameters() { |
| SSLParameters params = super.getSSLParameters(); |
| Platform.getSSLParameters(params, sslParameters, this); |
| return params; |
| } |
| |
| @Override |
| public void setSSLParameters(SSLParameters p) { |
| super.setSSLParameters(p); |
| Platform.setSSLParameters(p, sslParameters, this); |
| } |
| |
| @Override |
| public HandshakeStatus getHandshakeStatus() { |
| synchronized (stateLock) { |
| return getHandshakeStatusInternal(); |
| } |
| } |
| |
| private HandshakeStatus getHandshakeStatusInternal() { |
| if (handshakeFinished) { |
| return HandshakeStatus.NOT_HANDSHAKING; |
| } |
| switch (engineState) { |
| case STATE_HANDSHAKE_STARTED: |
| return pendingStatus(pendingOutboundEncryptedBytes()); |
| case STATE_HANDSHAKE_COMPLETED: |
| return HandshakeStatus.NEED_WRAP; |
| case STATE_NEW: |
| case STATE_MODE_SET: |
| case STATE_CLOSED: |
| case STATE_CLOSED_INBOUND: |
| case STATE_CLOSED_OUTBOUND: |
| case STATE_READY: |
| case STATE_READY_HANDSHAKE_CUT_THROUGH: |
| return HandshakeStatus.NOT_HANDSHAKING; |
| default: |
| break; |
| } |
| throw new IllegalStateException("Unexpected engine state: " + engineState); |
| } |
| |
| private int pendingOutboundEncryptedBytes() { |
| return NativeCrypto.SSL_pending_written_bytes_in_BIO(networkBio); |
| } |
| |
| private int pendingInboundCleartextBytes() { |
| return NativeCrypto.SSL_pending_readable_bytes(sslNativePointer); |
| } |
| |
| private static SSLEngineResult.HandshakeStatus pendingStatus(int pendingOutboundBytes) { |
| // Depending on if there is something left in the BIO we need to WRAP or UNWRAP |
| return pendingOutboundBytes > 0 ? NEED_WRAP : NEED_UNWRAP; |
| } |
| |
| @Override |
| public boolean getNeedClientAuth() { |
| return sslParameters.getNeedClientAuth(); |
| } |
| |
| @Override |
| public SSLSession getSession() { |
| if (sslSession == null) { |
| return handshakeSession != null ? Platform.wrapSSLSession(handshakeSession) |
| : SSLNullSession.getNullSession(); |
| } |
| return Platform.wrapSSLSession(sslSession); |
| } |
| |
| @Override |
| public String[] getSupportedCipherSuites() { |
| return NativeCrypto.getSupportedCipherSuites(); |
| } |
| |
| @Override |
| public String[] getSupportedProtocols() { |
| return NativeCrypto.getSupportedProtocols(); |
| } |
| |
| @Override |
| public boolean getUseClientMode() { |
| return sslParameters.getUseClientMode(); |
| } |
| |
| @Override |
| public boolean getWantClientAuth() { |
| return sslParameters.getWantClientAuth(); |
| } |
| |
| @Override |
| public boolean isInboundDone() { |
| if (sslNativePointer == 0) { |
| synchronized (stateLock) { |
| return engineState == STATE_CLOSED || engineState == STATE_CLOSED_INBOUND; |
| } |
| } |
| return (NativeCrypto.SSL_get_shutdown(sslNativePointer) & SSL_RECEIVED_SHUTDOWN) != 0; |
| } |
| |
| @Override |
| public boolean isOutboundDone() { |
| if (sslNativePointer == 0) { |
| synchronized (stateLock) { |
| return engineState == STATE_CLOSED || engineState == STATE_CLOSED_OUTBOUND; |
| } |
| } |
| return (NativeCrypto.SSL_get_shutdown(sslNativePointer) & SSL_SENT_SHUTDOWN) != 0; |
| } |
| |
| @Override |
| public void setEnabledCipherSuites(String[] suites) { |
| sslParameters.setEnabledCipherSuites(suites); |
| } |
| |
| @Override |
| public void setEnabledProtocols(String[] protocols) { |
| sslParameters.setEnabledProtocols(protocols); |
| } |
| |
| @Override |
| public void setEnableSessionCreation(boolean flag) { |
| sslParameters.setEnableSessionCreation(flag); |
| } |
| |
| @Override |
| public void setNeedClientAuth(boolean need) { |
| sslParameters.setNeedClientAuth(need); |
| } |
| |
| @Override |
| public void setUseClientMode(boolean mode) { |
| synchronized (stateLock) { |
| if (isHandshakeStarted()) { |
| throw new IllegalArgumentException( |
| "Can not change mode after handshake: engineState == " + engineState); |
| } |
| engineState = STATE_MODE_SET; |
| } |
| sslParameters.setUseClientMode(mode); |
| } |
| |
| @Override |
| public void setWantClientAuth(boolean want) { |
| sslParameters.setWantClientAuth(want); |
| } |
| |
| @Override |
| public SSLEngineResult unwrap(ByteBuffer src, ByteBuffer dst) throws SSLException { |
| synchronized (stateLock) { |
| try { |
| return unwrap(singleSrcBuffer(src), singleDstBuffer(dst)); |
| } finally { |
| resetSingleSrcBuffer(); |
| resetSingleDstBuffer(); |
| } |
| } |
| } |
| |
| @Override |
| public SSLEngineResult unwrap(ByteBuffer src, ByteBuffer[] dsts) throws SSLException { |
| synchronized (stateLock) { |
| try { |
| return unwrap(singleSrcBuffer(src), dsts); |
| } finally { |
| resetSingleSrcBuffer(); |
| } |
| } |
| } |
| |
| @Override |
| public SSLEngineResult unwrap(final ByteBuffer src, final ByteBuffer[] dsts, final int offset, |
| final int length) throws SSLException { |
| synchronized (stateLock) { |
| try { |
| return unwrap(singleSrcBuffer(src), 0, 1, dsts, offset, length); |
| } finally { |
| resetSingleSrcBuffer(); |
| } |
| } |
| } |
| |
| SSLEngineResult unwrap(final ByteBuffer[] srcs, final ByteBuffer[] dsts) throws SSLException { |
| checkArgument(srcs != null, "srcs is null"); |
| checkArgument(dsts != null, "dsts is null"); |
| return unwrap(srcs, 0, srcs.length, dsts, 0, dsts.length); |
| } |
| |
| SSLEngineResult unwrap(final ByteBuffer[] srcs, int srcsOffset, final int srcsLength, |
| final ByteBuffer[] dsts, final int dstsOffset, final int dstsLength) |
| throws SSLException { |
| checkArgument(srcs != null, "srcs is null"); |
| checkArgument(dsts != null, "dsts is null"); |
| |
| checkIndex(srcs.length, srcsOffset, srcsLength, "srcs"); |
| checkIndex(dsts.length, dstsOffset, dstsLength, "dsts"); |
| |
| // Determine the output capacity. |
| final int dstLength = calcDstsLength(dsts, dstsOffset, dstsLength); |
| final int endOffset = dstsOffset + dstsLength; |
| |
| final int srcsEndOffset = srcsOffset + srcsLength; |
| final long srcLength = calcSrcsLength(srcs, srcsOffset, srcsEndOffset); |
| |
| synchronized (stateLock) { |
| switch (engineState) { |
| case STATE_MODE_SET: |
| // Begin the handshake implicitly. |
| beginHandshakeInternal(); |
| break; |
| case STATE_CLOSED_INBOUND: |
| case STATE_CLOSED: |
| // If the inbound direction is closed. we can't send anymore. |
| return new SSLEngineResult(Status.CLOSED, getHandshakeStatusInternal(), 0, 0); |
| case STATE_NEW: |
| throw new IllegalStateException( |
| "Client/server mode must be set before calling unwrap"); |
| default: |
| break; |
| } |
| |
| HandshakeStatus handshakeStatus = HandshakeStatus.NOT_HANDSHAKING; |
| if (!handshakeFinished) { |
| handshakeStatus = handshake(); |
| if (handshakeStatus == NEED_WRAP) { |
| return NEED_WRAP_OK; |
| } |
| if (engineState == STATE_CLOSED) { |
| return NEED_WRAP_CLOSED; |
| } |
| // NEED_UNWRAP - just fall through to perform the unwrap. |
| } |
| |
| // Consume any source data. Skip this if there are unread cleartext data. |
| boolean noCleartextDataAvailable = pendingInboundCleartextBytes() <= 0; |
| int lenRemaining = 0; |
| if (srcLength > 0 && noCleartextDataAvailable) { |
| if (srcLength < SSL3_RT_HEADER_LENGTH) { |
| // Need to be able to read a full TLS header. |
| return new SSLEngineResult(BUFFER_UNDERFLOW, getHandshakeStatus(), 0, 0); |
| } |
| |
| int packetLength = SSLUtils.getEncryptedPacketLength(srcs, srcsOffset); |
| if (packetLength < 0) { |
| throw new SSLException("Unable to parse TLS packet header"); |
| } |
| |
| if (srcLength < packetLength) { |
| // We either have not enough data to read the packet header or not enough for |
| // reading the whole packet. |
| return new SSLEngineResult(BUFFER_UNDERFLOW, getHandshakeStatus(), 0, 0); |
| } |
| |
| // Limit the amount of data to be read to a single packet. |
| lenRemaining = packetLength; |
| } else if (noCleartextDataAvailable) { |
| // No pending data and nothing provided as input. Need more data. |
| return new SSLEngineResult(BUFFER_UNDERFLOW, getHandshakeStatus(), 0, 0); |
| } |
| |
| // Write all of the encrypted source data to the networkBio |
| int bytesConsumed = 0; |
| if (lenRemaining > 0 && srcsOffset < srcsEndOffset) { |
| do { |
| ByteBuffer src = srcs[srcsOffset]; |
| int remaining = src.remaining(); |
| if (remaining == 0) { |
| // We must skip empty buffers as BIO_write will return 0 if asked to |
| // write something with length 0. |
| srcsOffset++; |
| continue; |
| } |
| // Write the source encrypted data to the networkBio. |
| int written = writeEncryptedData(src, Math.min(lenRemaining, remaining)); |
| if (written > 0) { |
| bytesConsumed += written; |
| lenRemaining -= written; |
| if (lenRemaining == 0) { |
| // A whole packet has been consumed. |
| break; |
| } |
| |
| if (written == remaining) { |
| srcsOffset++; |
| } else { |
| // We were not able to write everything into the BIO so break the |
| // write loop as otherwise we will produce an error on the next |
| // write attempt, which will trigger a SSL.clearError() later. |
| break; |
| } |
| } else { |
| // BIO_write returned a negative or zero number, this means we could not |
| // complete the write operation and should retry later. |
| // We ignore BIO_* errors here as we use in memory BIO anyway and will |
| // do another SSL_* call later on in which we will produce an exception |
| // in case of an error |
| NativeCrypto.SSL_clear_error(); |
| break; |
| } |
| } while (srcsOffset < srcsEndOffset); |
| } |
| |
| // Now read any available plaintext data. |
| int bytesProduced = 0; |
| try { |
| if (dstLength > 0) { |
| // Write decrypted data to dsts buffers |
| for (int idx = dstsOffset; idx < endOffset; ++idx) { |
| ByteBuffer dst = dsts[idx]; |
| if (!dst.hasRemaining()) { |
| continue; |
| } |
| |
| int bytesRead = readPlaintextData(dst); |
| if (bytesRead > 0) { |
| bytesProduced += bytesRead; |
| if (dst.hasRemaining()) { |
| // We haven't filled this buffer fully, break out of the loop |
| // and determine the correct response status below. |
| break; |
| } |
| } else { |
| switch (bytesRead) { |
| case -SSL_ERROR_WANT_READ: |
| case -SSL_ERROR_WANT_WRITE: { |
| return newResult(bytesConsumed, bytesProduced, handshakeStatus); |
| } |
| default: { |
| // Should never get here. |
| throw shutdownWithError("SSL_read"); |
| } |
| } |
| } |
| } |
| } else { |
| // If the capacity of all destination buffers is 0 we need to trigger a SSL_read |
| // anyway to ensure everything is flushed in the BIO pair and so we can detect |
| // it in the pendingInboundCleartextBytes() call. |
| readPlaintextData(EMPTY); |
| } |
| } catch (SSLException e) { |
| if (pendingOutboundEncryptedBytes() > 0) { |
| // We need to flush any pending bytes to the remote endpoint in case |
| // there is an alert that needs to be propagated. |
| if (!handshakeFinished && handshakeException == null) { |
| // Save the handshake exception. We will re-throw during the next |
| // handshake. |
| handshakeException = e; |
| } |
| return new SSLEngineResult(OK, NEED_WRAP, bytesConsumed, bytesProduced); |
| } |
| |
| // Nothing to write, just shutdown and throw the exception. |
| shutdown(); |
| throw convertException(e); |
| } catch (InterruptedIOException e) { |
| return newResult(bytesConsumed, bytesProduced, handshakeStatus); |
| } catch (EOFException e) { |
| closeAll(); |
| throw convertException(e); |
| } catch (IOException e) { |
| shutdown(); |
| throw convertException(e); |
| } |
| |
| // There won't be any application data until we're done handshaking. |
| // We first check handshakeFinished to eliminate the overhead of extra JNI call if |
| // possible. |
| int pendingCleartextBytes = handshakeFinished ? pendingInboundCleartextBytes() : 0; |
| if (pendingCleartextBytes > 0) { |
| // We filled all buffers but there is still some data pending in the BIO buffer, |
| // return BUFFER_OVERFLOW. |
| return new SSLEngineResult(BUFFER_OVERFLOW, |
| mayFinishHandshake(handshakeStatus == FINISHED |
| ? handshakeStatus |
| : getHandshakeStatusInternal()), |
| bytesConsumed, bytesProduced); |
| } |
| |
| return newResult(bytesConsumed, bytesProduced, handshakeStatus); |
| } |
| } |
| |
| private static int calcDstsLength(ByteBuffer[] dsts, int dstsOffset, int dstsLength) { |
| int capacity = 0; |
| for (int i = 0; i < dsts.length; i++) { |
| ByteBuffer dst = dsts[i]; |
| checkArgument(dst != null, "dsts[%d] is null", i); |
| if (dst.isReadOnly()) { |
| throw new ReadOnlyBufferException(); |
| } |
| if (i >= dstsOffset && i < dstsOffset + dstsLength) { |
| capacity += dst.remaining(); |
| } |
| } |
| return capacity; |
| } |
| |
| private static long calcSrcsLength(ByteBuffer[] srcs, int srcsOffset, int srcsEndOffset) { |
| long len = 0; |
| for (int i = srcsOffset; i < srcsEndOffset; i++) { |
| ByteBuffer src = srcs[i]; |
| if (src == null) { |
| throw new IllegalArgumentException("srcs[" + i + "] is null"); |
| } |
| len += src.remaining(); |
| } |
| return len; |
| } |
| |
| private SSLEngineResult.HandshakeStatus handshake() throws SSLException { |
| long sslSessionCtx = 0L; |
| try { |
| // Only actually perform the handshake if we haven't already just completed it |
| // via BIO operations. |
| try { |
| // First, check to see if we already have a pending alert that needs to be written. |
| if (handshakeException != null) { |
| if (pendingOutboundEncryptedBytes() > 0) { |
| // Need to finish writing the alert to the remote peer. |
| return NEED_WRAP; |
| } |
| |
| // We've finished writing the alert, just throw the exception. |
| SSLException e = handshakeException; |
| handshakeException = null; |
| throw e; |
| } |
| |
| int ssl_error_code = NativeCrypto.ENGINE_SSL_do_handshake(sslNativePointer, this); |
| switch (ssl_error_code) { |
| case SSL_ERROR_WANT_READ: |
| return pendingStatus(pendingOutboundEncryptedBytes()); |
| case SSL_ERROR_WANT_WRITE: { |
| return NEED_WRAP; |
| } |
| default: { |
| // SSL_ERROR_NONE. |
| } |
| } |
| } catch (SSLException e) { |
| if (pendingOutboundEncryptedBytes() > 0) { |
| // Delay throwing the exception since we appear to have an outbound alert |
| // that needs to be written to the remote endpoint. |
| handshakeException = e; |
| return NEED_WRAP; |
| } |
| |
| // There is no pending alert to write - just shutdown and throw. |
| shutdown(); |
| throw e; |
| } catch (IOException e) { |
| shutdown(); |
| throw e; |
| } |
| |
| // Handshake is finished! |
| sslSessionCtx = NativeCrypto.SSL_get1_session(sslNativePointer); |
| if (sslSessionCtx == 0) { |
| // TODO(nathanmittler): Should we throw here? |
| // return pendingStatus(pendingOutboundBytes()); |
| throw shutdownWithError("Failed to obtain session after handshake completed"); |
| } |
| sslSession = sslParameters.setupSession(sslSessionCtx, sslNativePointer, sslSession, |
| getPeerHost(), getPeerPort(), true); |
| if (sslSession != null && engineState == STATE_HANDSHAKE_STARTED) { |
| engineState = STATE_READY_HANDSHAKE_CUT_THROUGH; |
| } else { |
| engineState = STATE_READY; |
| } |
| finishHandshake(); |
| return FINISHED; |
| } catch (Exception e) { |
| throw toSSLHandshakeException(e); |
| } finally { |
| if (sslSession == null && sslSessionCtx != 0) { |
| NativeCrypto.SSL_SESSION_free(sslSessionCtx); |
| } |
| } |
| } |
| |
| private void finishHandshake() throws SSLException { |
| handshakeFinished = true; |
| // Notify the listener, if provided. |
| if (handshakeListener != null) { |
| handshakeListener.onHandshakeFinished(); |
| } |
| } |
| /** |
| * Write plaintext data to the OpenSSL internal BIO |
| * |
| * Calling this function with src.remaining == 0 is undefined. |
| */ |
| private int writePlaintextData(final ByteBuffer src, int len) throws SSLException { |
| try { |
| final int pos = src.position(); |
| final int sslWrote; |
| |
| if (src.isDirect()) { |
| long addr = NativeCrypto.getDirectBufferAddress(src) + pos; |
| sslWrote = NativeCrypto.ENGINE_SSL_write_direct(sslNativePointer, addr, len, this); |
| } else { |
| ByteBuffer heapSrc = toHeapBuffer(src, len); |
| sslWrote = NativeCrypto.ENGINE_SSL_write_heap(sslNativePointer, heapSrc.array(), |
| heapSrc.arrayOffset() + heapSrc.position(), len, this); |
| } |
| if (sslWrote > 0) { |
| src.position(pos + sslWrote); |
| } |
| return sslWrote; |
| } catch (Exception e) { |
| throw convertException(e); |
| } |
| } |
| |
| /** |
| * Read plaintext data from the OpenSSL internal BIO |
| */ |
| private int readPlaintextData(final ByteBuffer dst) throws IOException { |
| try { |
| final int sslRead; |
| final int pos = dst.position(); |
| final int limit = dst.limit(); |
| final int len = Math.min(SSL3_RT_MAX_PACKET_SIZE, limit - pos); |
| if (dst.isDirect()) { |
| long addr = NativeCrypto.getDirectBufferAddress(dst) + pos; |
| sslRead = NativeCrypto.ENGINE_SSL_read_direct(sslNativePointer, addr, len, this); |
| if (sslRead > 0) { |
| dst.position(pos + sslRead); |
| } |
| } else if (dst.hasArray()) { |
| sslRead = NativeCrypto.ENGINE_SSL_read_heap( |
| sslNativePointer, dst.array(), dst.arrayOffset() + pos, len, this); |
| if (sslRead > 0) { |
| dst.position(pos + sslRead); |
| } |
| } else { |
| byte[] data = new byte[len]; |
| sslRead = NativeCrypto.ENGINE_SSL_read_heap(sslNativePointer, data, 0, len, this); |
| if (sslRead > 0) { |
| dst.put(data, 0, sslRead); |
| } |
| } |
| return sslRead; |
| } catch (CertificateException e) { |
| throw convertException(e); |
| } |
| } |
| |
| private SSLException convertException(Throwable e) { |
| if (e instanceof SSLHandshakeException || !handshakeFinished) { |
| return SSLUtils.toSSLHandshakeException(e); |
| } |
| return SSLUtils.toSSLException(e); |
| } |
| |
| /** |
| * Write encrypted data to the OpenSSL network BIO. |
| */ |
| private int writeEncryptedData(final ByteBuffer src, int len) throws SSLException { |
| try { |
| final int pos = src.position(); |
| final int netWrote; |
| if (src.isDirect()) { |
| long addr = NativeCrypto.getDirectBufferAddress(src) + pos; |
| netWrote = NativeCrypto.ENGINE_SSL_write_BIO_direct( |
| sslNativePointer, networkBio, addr, len, this); |
| } else { |
| ByteBuffer heapSrc = toHeapBuffer(src, len); |
| netWrote = NativeCrypto.ENGINE_SSL_write_BIO_heap(sslNativePointer, networkBio, |
| heapSrc.array(), heapSrc.arrayOffset() + heapSrc.position(), len, this); |
| } |
| |
| if (netWrote >= 0) { |
| src.position(pos + netWrote); |
| } |
| |
| return netWrote; |
| } catch (IOException e) { |
| throw new SSLException(e); |
| } |
| } |
| |
| private SSLEngineResult readPendingBytesFromBIO(ByteBuffer dst, int bytesConsumed, |
| int bytesProduced, SSLEngineResult.HandshakeStatus status) throws SSLException { |
| try { |
| // Check to see if the engine wrote data into the network BIO |
| int pendingNet = pendingOutboundEncryptedBytes(); |
| if (pendingNet > 0) { |
| // Do we have enough room in dst to write encrypted data? |
| int capacity = dst.remaining(); |
| if (capacity < pendingNet) { |
| return new SSLEngineResult(BUFFER_OVERFLOW, |
| mayFinishHandshake( |
| status == FINISHED ? status : getHandshakeStatus(pendingNet)), |
| bytesConsumed, bytesProduced); |
| } |
| |
| // Write the pending data from the network BIO into the dst buffer |
| int produced = readEncryptedData(dst, pendingNet); |
| |
| if (produced <= 0) { |
| // We ignore BIO_* errors here as we use in memory BIO anyway and will do |
| // another SSL_* call later on in which we will produce an exception in |
| // case of an error |
| NativeCrypto.SSL_clear_error(); |
| } else { |
| bytesProduced += produced; |
| pendingNet -= produced; |
| } |
| |
| return new SSLEngineResult(getEngineStatus(), |
| mayFinishHandshake( |
| status == FINISHED ? status : getHandshakeStatus(pendingNet)), |
| bytesConsumed, bytesProduced); |
| } |
| return null; |
| } catch (Exception e) { |
| throw convertException(e); |
| } |
| } |
| |
| /** |
| * Read encrypted data from the OpenSSL network BIO |
| */ |
| private int readEncryptedData(final ByteBuffer dst, final int pending) throws SSLException { |
| try { |
| int bioRead = 0; |
| if (dst.remaining() >= pending) { |
| final int pos = dst.position(); |
| final int limit = dst.limit(); |
| final int len = Math.min(pending, limit - pos); |
| if (dst.isDirect()) { |
| long addr = NativeCrypto.getDirectBufferAddress(dst) + pos; |
| bioRead = NativeCrypto.ENGINE_SSL_read_BIO_direct( |
| sslNativePointer, networkBio, addr, len, this); |
| if (bioRead > 0) { |
| dst.position(pos + bioRead); |
| return bioRead; |
| } |
| } else if (dst.hasArray()) { |
| bioRead = NativeCrypto.ENGINE_SSL_read_BIO_heap(sslNativePointer, networkBio, |
| dst.array(), dst.arrayOffset() + pos, pending, this); |
| if (bioRead > 0) { |
| dst.position(pos + bioRead); |
| return bioRead; |
| } |
| } else { |
| byte[] data = new byte[len]; |
| bioRead = NativeCrypto.ENGINE_SSL_read_BIO_heap( |
| sslNativePointer, networkBio, data, 0, pending, this); |
| if (bioRead > 0) { |
| dst.put(data, 0, bioRead); |
| return bioRead; |
| } |
| } |
| } |
| return bioRead; |
| } catch (Exception e) { |
| throw convertException(e); |
| } |
| } |
| |
| private SSLEngineResult.HandshakeStatus mayFinishHandshake( |
| SSLEngineResult.HandshakeStatus status) throws SSLException { |
| if (!handshakeFinished && status == NOT_HANDSHAKING) { |
| // If the status was NOT_HANDSHAKING and we not finished the handshake we need to call |
| // SSL_do_handshake() again |
| return handshake(); |
| } |
| return status; |
| } |
| |
| private SSLEngineResult.HandshakeStatus getHandshakeStatus(int pending) { |
| // Check if we are in the initial handshake phase or shutdown phase |
| return !handshakeFinished ? pendingStatus(pending) : NOT_HANDSHAKING; |
| } |
| |
| private SSLEngineResult.Status getEngineStatus() { |
| switch (engineState) { |
| case STATE_CLOSED_INBOUND: |
| case STATE_CLOSED_OUTBOUND: |
| case STATE_CLOSED: |
| return CLOSED; |
| default: |
| return OK; |
| } |
| } |
| |
| private void closeAll() throws SSLException { |
| closeOutbound(); |
| closeInbound(); |
| } |
| |
| private SSLEngineResult sslReadErrorResult(int err, int bytesConsumed, int bytesProduced) |
| throws SSLException { |
| if (!handshakeFinished && pendingOutboundEncryptedBytes() > 0) { |
| return new SSLEngineResult(OK, NEED_WRAP, bytesConsumed, bytesProduced); |
| } |
| throw shutdownWithError(NativeCrypto.SSL_get_error_string(err)); |
| } |
| |
| private SSLException shutdownWithError(String err) { |
| // There was an internal error -- shutdown |
| shutdown(); |
| if (!handshakeFinished) { |
| return new SSLException(err); |
| } |
| return new SSLHandshakeException(err); |
| } |
| |
| private SSLEngineResult newResult(int bytesConsumed, int bytesProduced, |
| SSLEngineResult.HandshakeStatus status) throws SSLException { |
| return new SSLEngineResult(getEngineStatus(), |
| mayFinishHandshake(status == FINISHED ? status : getHandshakeStatusInternal()), |
| bytesConsumed, bytesProduced); |
| } |
| |
| @Override |
| public final SSLEngineResult wrap(ByteBuffer src, ByteBuffer dst) throws SSLException { |
| synchronized (stateLock) { |
| try { |
| return wrap(singleSrcBuffer(src), dst); |
| } finally { |
| resetSingleSrcBuffer(); |
| } |
| } |
| } |
| |
| @Override |
| public SSLEngineResult wrap(ByteBuffer[] srcs, int offset, int length, ByteBuffer dst) |
| throws SSLException { |
| checkArgument(srcs != null, "srcs is null"); |
| checkArgument(dst != null, "dst is null"); |
| checkIndex(srcs.length, offset, length, "srcs"); |
| if (dst.isReadOnly()) { |
| throw new ReadOnlyBufferException(); |
| } |
| |
| synchronized (stateLock) { |
| switch (engineState) { |
| case STATE_MODE_SET: |
| // Begin the handshake implicitly. |
| beginHandshakeInternal(); |
| break; |
| case STATE_CLOSED_OUTBOUND: |
| case STATE_CLOSED: |
| return new SSLEngineResult(Status.CLOSED, getHandshakeStatusInternal(), 0, 0); |
| case STATE_NEW: |
| throw new IllegalStateException( |
| "Client/server mode must be set before calling wrap"); |
| default: |
| break; |
| } |
| |
| // If we haven't completed the handshake yet, just let the caller know. |
| HandshakeStatus handshakeStatus = HandshakeStatus.NOT_HANDSHAKING; |
| // Prepare OpenSSL to work in server mode and receive handshake |
| if (!handshakeFinished) { |
| handshakeStatus = handshake(); |
| if (handshakeStatus == NEED_UNWRAP) { |
| return NEED_UNWRAP_OK; |
| } |
| |
| if (engineState == STATE_CLOSED) { |
| return NEED_UNWRAP_CLOSED; |
| } |
| // NEED_WRAP - just fall through to perform the wrap. |
| } |
| |
| int srcsLen = 0; |
| final int endOffset = offset + length; |
| for (int i = offset; i < endOffset; ++i) { |
| final ByteBuffer src = srcs[i]; |
| if (src == null) { |
| throw new IllegalArgumentException("srcs[" + i + "] is null"); |
| } |
| if (srcsLen == SSL3_RT_MAX_PLAIN_LENGTH) { |
| continue; |
| } |
| |
| srcsLen += src.remaining(); |
| if (srcsLen > SSL3_RT_MAX_PLAIN_LENGTH || srcsLen < 0) { |
| // If srcLen > MAX_PLAINTEXT_LENGTH or secLen < 0 just set it to |
| // MAX_PLAINTEXT_LENGTH. |
| // This also help us to guard against overflow. |
| // We not break out here as we still need to check for null entries in srcs[]. |
| srcsLen = SSL3_RT_MAX_PLAIN_LENGTH; |
| } |
| } |
| |
| if (dst.remaining() < calculateOutNetBufSize(srcsLen)) { |
| return new SSLEngineResult( |
| Status.BUFFER_OVERFLOW, getHandshakeStatusInternal(), 0, 0); |
| } |
| |
| int bytesProduced = 0; |
| int bytesConsumed = 0; |
| loop: |
| for (int i = offset; i < endOffset; ++i) { |
| final ByteBuffer src = srcs[i]; |
| checkArgument(src != null, "srcs[%d] is null", i); |
| while (src.hasRemaining()) { |
| final SSLEngineResult pendingNetResult; |
| // Write plaintext application data to the SSL engine |
| int result = writePlaintextData(src, |
| Math.min(src.remaining(), SSL3_RT_MAX_PLAIN_LENGTH - bytesConsumed)); |
| if (result > 0) { |
| bytesConsumed += result; |
| |
| pendingNetResult = readPendingBytesFromBIO( |
| dst, bytesConsumed, bytesProduced, handshakeStatus); |
| if (pendingNetResult != null) { |
| if (pendingNetResult.getStatus() != OK) { |
| return pendingNetResult; |
| } |
| bytesProduced = pendingNetResult.bytesProduced(); |
| } |
| if (bytesConsumed == SSL3_RT_MAX_PLAIN_LENGTH) { |
| // If we consumed the maximum amount of bytes for the plaintext length |
| // break out of the loop and start to fill the dst buffer. |
| break loop; |
| } |
| } else { |
| int sslError = NativeCrypto.SSL_get_error(sslNativePointer, result); |
| switch (sslError) { |
| case SSL_ERROR_ZERO_RETURN: |
| // This means the connection was shutdown correctly, close inbound |
| // and outbound |
| closeAll(); |
| pendingNetResult = readPendingBytesFromBIO( |
| dst, bytesConsumed, bytesProduced, handshakeStatus); |
| return pendingNetResult != null ? pendingNetResult |
| : CLOSED_NOT_HANDSHAKING; |
| case SSL_ERROR_WANT_READ: |
| // If there is no pending data to read from BIO we should go back to |
| // event loop and try |
| // to read more data [1]. It is also possible that event loop will |
| // detect the socket |
| // has been closed. [1] |
| // https://www.openssl.org/docs/manmaster/ssl/SSL_write.html |
| pendingNetResult = readPendingBytesFromBIO( |
| dst, bytesConsumed, bytesProduced, handshakeStatus); |
| return pendingNetResult != null |
| ? pendingNetResult |
| : new SSLEngineResult(getEngineStatus(), NEED_UNWRAP, |
| bytesConsumed, bytesProduced); |
| case SSL_ERROR_WANT_WRITE: |
| // SSL_ERROR_WANT_WRITE typically means that the underlying |
| // transport is not writable |
| // and we should set the "want write" flag on the selector and try |
| // again when the |
| // underlying transport is writable [1]. However we are not directly |
| // writing to the |
| // underlying transport and instead writing to a BIO buffer. The |
| // OpenSsl documentation |
| // says we should do the following [1]: |
| // |
| // "When using a buffering BIO, like a BIO pair, data must be |
| // written into or retrieved |
| // out of the BIO before being able to continue." |
| // |
| // So we attempt to drain the BIO buffer below, but if there is no |
| // data this condition |
| // is undefined and we assume their is a fatal error with the |
| // openssl engine and close. |
| // [1] https://www.openssl.org/docs/manmaster/ssl/SSL_write.html |
| pendingNetResult = readPendingBytesFromBIO( |
| dst, bytesConsumed, bytesProduced, handshakeStatus); |
| return pendingNetResult != null ? pendingNetResult |
| : NEED_WRAP_CLOSED; |
| default: |
| // Everything else is considered as error |
| throw shutdownWithError("SSL_write"); |
| } |
| } |
| } |
| } |
| // We need to check if pendingWrittenBytesInBIO was checked yet, as we may not checked |
| // if the srcs was |
| // empty, or only contained empty buffers. |
| if (bytesConsumed == 0) { |
| SSLEngineResult pendingNetResult = |
| readPendingBytesFromBIO(dst, 0, bytesProduced, handshakeStatus); |
| if (pendingNetResult != null) { |
| return pendingNetResult; |
| } |
| } |
| |
| // return new SSLEngineResult(OK, getHandshakeStatusInternal(), bytesConsumed, |
| // bytesProduced); |
| return newResult(bytesConsumed, bytesProduced, handshakeStatus); |
| } |
| } |
| |
| @Override |
| public int clientPSKKeyRequested(String identityHint, byte[] identity, byte[] key) { |
| return sslParameters.clientPSKKeyRequested(identityHint, identity, key, this); |
| } |
| |
| @Override |
| public int serverPSKKeyRequested(String identityHint, String identity, byte[] key) { |
| return sslParameters.serverPSKKeyRequested(identityHint, identity, key, this); |
| } |
| |
| @Override |
| public void onSSLStateChange(int type, int val) { |
| synchronized (stateLock) { |
| switch (type) { |
| case SSL_CB_HANDSHAKE_START: { |
| // For clients, this will allow the NEED_UNWRAP status to be |
| // returned. |
| engineState = STATE_HANDSHAKE_STARTED; |
| break; |
| } |
| case SSL_CB_HANDSHAKE_DONE: { |
| if (engineState != STATE_HANDSHAKE_STARTED |
| && engineState != STATE_READY_HANDSHAKE_CUT_THROUGH) { |
| throw new IllegalStateException( |
| "Completed handshake while in mode " + engineState); |
| } |
| engineState = STATE_HANDSHAKE_COMPLETED; |
| break; |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void verifyCertificateChain(long[] certRefs, String authMethod) |
| throws CertificateException { |
| try { |
| X509TrustManager x509tm = sslParameters.getX509TrustManager(); |
| if (x509tm == null) { |
| throw new CertificateException("No X.509 TrustManager"); |
| } |
| if (certRefs == null || certRefs.length == 0) { |
| throw new SSLException("Peer sent no certificate"); |
| } |
| OpenSSLX509Certificate[] peerCertChain = |
| OpenSSLX509Certificate.createCertChain(certRefs); |
| |
| byte[] ocspData = NativeCrypto.SSL_get_ocsp_response(sslNativePointer); |
| byte[] tlsSctData = NativeCrypto.SSL_get_signed_cert_timestamp_list(sslNativePointer); |
| |
| // Used for verifyCertificateChain callback |
| handshakeSession = new OpenSSLSessionImpl( |
| NativeCrypto.SSL_get1_session(sslNativePointer), null, peerCertChain, ocspData, |
| tlsSctData, getPeerHost(), getPeerPort(), null); |
| |
| if (getUseClientMode()) { |
| Platform.checkServerTrusted(x509tm, peerCertChain, authMethod, this); |
| } else { |
| String authType = peerCertChain[0].getPublicKey().getAlgorithm(); |
| Platform.checkClientTrusted(x509tm, peerCertChain, authType, this); |
| } |
| } catch (CertificateException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new CertificateException(e); |
| } finally { |
| handshakeSession = null; |
| } |
| } |
| |
| @Override |
| public void clientCertificateRequested(byte[] keyTypeBytes, byte[][] asn1DerEncodedPrincipals) |
| throws CertificateEncodingException, SSLException { |
| sslParameters.chooseClientCertificate( |
| keyTypeBytes, asn1DerEncodedPrincipals, sslNativePointer, this); |
| } |
| |
| private void shutdown() { |
| try { |
| NativeCrypto.ENGINE_SSL_shutdown(sslNativePointer, this); |
| } catch (IOException ignored) { |
| // TODO: The RI ignores close failures in SSLSocket, but need to |
| // investigate whether it does for SSLEngine. |
| } |
| } |
| |
| private void shutdownAndFreeSslNative() { |
| try { |
| shutdown(); |
| } finally { |
| free(); |
| } |
| } |
| |
| private void free() { |
| if (sslNativePointer == 0) { |
| return; |
| } |
| NativeCrypto.SSL_free(sslNativePointer); |
| NativeCrypto.BIO_free_all(networkBio); |
| sslNativePointer = 0; |
| networkBio = 0; |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| try { |
| free(); |
| } finally { |
| super.finalize(); |
| } |
| } |
| |
| /* @Override */ |
| @SuppressWarnings("MissingOverride") // For compilation with Java 6. |
| public SSLSession getHandshakeSession() { |
| return handshakeSession; |
| } |
| |
| /** |
| * Work-around to allow this method to be called on older versions of Android. |
| */ |
| SSLSession handshakeSession() { |
| if (handshakeSession != null) { |
| return Platform.wrapSSLSession(handshakeSession); |
| } |
| return null; |
| } |
| |
| @Override |
| public String chooseServerAlias(X509KeyManager keyManager, String keyType) { |
| if (keyManager instanceof X509ExtendedKeyManager) { |
| X509ExtendedKeyManager ekm = (X509ExtendedKeyManager) keyManager; |
| return ekm.chooseEngineServerAlias(keyType, null, this); |
| } else { |
| return keyManager.chooseServerAlias(keyType, null, null); |
| } |
| } |
| |
| @Override |
| public String chooseClientAlias( |
| X509KeyManager keyManager, X500Principal[] issuers, String[] keyTypes) { |
| if (keyManager instanceof X509ExtendedKeyManager) { |
| X509ExtendedKeyManager ekm = (X509ExtendedKeyManager) keyManager; |
| return ekm.chooseEngineClientAlias(keyTypes, issuers, this); |
| } else { |
| return keyManager.chooseClientAlias(keyTypes, issuers, null); |
| } |
| } |
| |
| @Override |
| @SuppressWarnings("deprecation") // PSKKeyManager is deprecated, but in our own package |
| public String chooseServerPSKIdentityHint(PSKKeyManager keyManager) { |
| return keyManager.chooseServerKeyIdentityHint(this); |
| } |
| |
| @Override |
| @SuppressWarnings("deprecation") // PSKKeyManager is deprecated, but in our own package |
| public String chooseClientPSKIdentity(PSKKeyManager keyManager, String identityHint) { |
| return keyManager.chooseClientKeyIdentity(identityHint, this); |
| } |
| |
| @Override |
| @SuppressWarnings("deprecation") // PSKKeyManager is deprecated, but in our own package |
| public SecretKey getPSKKey(PSKKeyManager keyManager, String identityHint, String identity) { |
| return keyManager.getKey(identityHint, identity, this); |
| } |
| |
| /** |
| * This method enables session ticket support. |
| * |
| * @param useSessionTickets True to enable session tickets |
| */ |
| void setUseSessionTickets(boolean useSessionTickets) { |
| sslParameters.setUseSessionTickets(useSessionTickets); |
| } |
| |
| /** |
| * Sets the list of ALPN protocols. |
| * |
| * @param alpnProtocols the list of ALPN protocols |
| */ |
| void setAlpnProtocols(String[] alpnProtocols) { |
| sslParameters.setAlpnProtocols(alpnProtocols); |
| } |
| |
| /** |
| * Sets the list of ALPN protocols. |
| * |
| * @param alpnProtocols the list of ALPN protocols |
| */ |
| void setAlpnProtocols(byte[] alpnProtocols) { |
| sslParameters.setAlpnProtocols(alpnProtocols); |
| } |
| |
| /** |
| * Returns the protocol agreed upon by client and server, or {@code null} if no protocol was |
| * agreed upon. |
| */ |
| byte[] getAlpnSelectedProtocol() { |
| return NativeCrypto.SSL_get0_alpn_selected(sslNativePointer); |
| } |
| |
| private ByteBuffer toHeapBuffer(ByteBuffer buffer, int len) { |
| if (buffer.hasArray()) { |
| return buffer; |
| } |
| |
| // Need to copy to a heap buffer. |
| final ByteBuffer heapBuffer = ByteBuffer.allocate(len); |
| final int pos = buffer.position(); |
| final int limit = buffer.limit(); |
| buffer.limit(pos + len); |
| try { |
| heapBuffer.put(buffer); |
| heapBuffer.flip(); |
| return heapBuffer; |
| } finally { |
| buffer.limit(limit); |
| buffer.position(pos); |
| } |
| } |
| |
| private ByteBuffer[] singleSrcBuffer(ByteBuffer src) { |
| singleSrcBuffer[0] = src; |
| return singleSrcBuffer; |
| } |
| |
| private void resetSingleSrcBuffer() { |
| singleSrcBuffer[0] = null; |
| } |
| |
| private ByteBuffer[] singleDstBuffer(ByteBuffer src) { |
| singleDstBuffer[0] = src; |
| return singleDstBuffer; |
| } |
| |
| private void resetSingleDstBuffer() { |
| singleDstBuffer[0] = null; |
| } |
| |
| private static void checkIndex(int arrayLength, int offset, int length, String arrayName) { |
| if ((offset | length) < 0 || offset + length > arrayLength) { |
| throw new IndexOutOfBoundsException("offset: " + offset + ", length: " + length |
| + " (expected: offset <= offset + length <= " + arrayName + ".length (" |
| + arrayLength + "))"); |
| } |
| } |
| } |
