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/*
* Copyright 2014 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 io.netty.handler.ssl;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.UnpooledByteBufAllocator;
import io.netty.internal.tcnative.Buffer;
import io.netty.internal.tcnative.Library;
import io.netty.internal.tcnative.SSL;
import io.netty.internal.tcnative.SSLContext;
import io.netty.util.CharsetUtil;
import io.netty.util.ReferenceCountUtil;
import io.netty.util.ReferenceCounted;
import io.netty.util.internal.NativeLibraryLoader;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.SystemPropertyUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import java.io.ByteArrayInputStream;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import static io.netty.handler.ssl.SslUtils.*;
/**
* Tells if {@code netty-tcnative} and its OpenSSL support
* are available.
*/
public final class OpenSsl {
private static final InternalLogger logger = InternalLoggerFactory.getInstance(OpenSsl.class);
private static final Throwable UNAVAILABILITY_CAUSE;
static final List DEFAULT_CIPHERS;
static final Set AVAILABLE_CIPHER_SUITES;
private static final Set AVAILABLE_OPENSSL_CIPHER_SUITES;
private static final Set AVAILABLE_JAVA_CIPHER_SUITES;
private static final boolean SUPPORTS_KEYMANAGER_FACTORY;
private static final boolean USE_KEYMANAGER_FACTORY;
private static final boolean SUPPORTS_OCSP;
private static final boolean TLSV13_SUPPORTED;
private static final boolean IS_BORINGSSL;
static final Set SUPPORTED_PROTOCOLS_SET;
// self-signed certificate for netty.io and the matching private-key
private static final String CERT = "-----BEGIN CERTIFICATE-----\n" +
"MIICrjCCAZagAwIBAgIIdSvQPv1QAZQwDQYJKoZIhvcNAQELBQAwFjEUMBIGA1UEAxMLZXhhbXBs\n" +
"ZS5jb20wIBcNMTgwNDA2MjIwNjU5WhgPOTk5OTEyMzEyMzU5NTlaMBYxFDASBgNVBAMTC2V4YW1w\n" +
"bGUuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAggbWsmDQ6zNzRZ5AW8E3eoGl\n" +
"qWvOBDb5Fs1oBRrVQHuYmVAoaqwDzXYJ0LOwa293AgWEQ1jpcbZ2hpoYQzqEZBTLnFhMrhRFlH6K\n" +
"bJND8Y33kZ/iSVBBDuGbdSbJShlM+4WwQ9IAso4MZ4vW3S1iv5fGGpLgbtXRmBf/RU8omN0Gijlv\n" +
"WlLWHWijLN8xQtySFuBQ7ssW8RcKAary3pUm6UUQB+Co6lnfti0Tzag8PgjhAJq2Z3wbsGRnP2YS\n" +
"vYoaK6qzmHXRYlp/PxrjBAZAmkLJs4YTm/XFF+fkeYx4i9zqHbyone5yerRibsHaXZWLnUL+rFoe\n" +
"MdKvr0VS3sGmhQIDAQABMA0GCSqGSIb3DQEBCwUAA4IBAQADQi441pKmXf9FvUV5EHU4v8nJT9Iq\n" +
"yqwsKwXnr7AsUlDGHBD7jGrjAXnG5rGxuNKBQ35wRxJATKrUtyaquFUL6H8O6aGQehiFTk6zmPbe\n" +
"12Gu44vqqTgIUxnv3JQJiox8S2hMxsSddpeCmSdvmalvD6WG4NthH6B9ZaBEiep1+0s0RUaBYn73\n" +
"I7CCUaAtbjfR6pcJjrFk5ei7uwdQZFSJtkP2z8r7zfeANJddAKFlkaMWn7u+OIVuB4XPooWicObk\n" +
"NAHFtP65bocUYnDpTVdiyvn8DdqyZ/EO8n1bBKBzuSLplk2msW4pdgaFgY7Vw/0wzcFXfUXmL1uy\n" +
"G8sQD/wx\n" +
"-----END CERTIFICATE-----";
private static final String KEY = "-----BEGIN PRIVATE KEY-----\n" +
"MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCCBtayYNDrM3NFnkBbwTd6gaWp\n" +
"a84ENvkWzWgFGtVAe5iZUChqrAPNdgnQs7Brb3cCBYRDWOlxtnaGmhhDOoRkFMucWEyuFEWUfops\n" +
"k0PxjfeRn+JJUEEO4Zt1JslKGUz7hbBD0gCyjgxni9bdLWK/l8YakuBu1dGYF/9FTyiY3QaKOW9a\n" +
"UtYdaKMs3zFC3JIW4FDuyxbxFwoBqvLelSbpRRAH4KjqWd+2LRPNqDw+COEAmrZnfBuwZGc/ZhK9\n" +
"ihorqrOYddFiWn8/GuMEBkCaQsmzhhOb9cUX5+R5jHiL3OodvKid7nJ6tGJuwdpdlYudQv6sWh4x\n" +
"0q+vRVLewaaFAgMBAAECggEAP8tPJvFtTxhNJAkCloHz0D0vpDHqQBMgntlkgayqmBqLwhyb18pR\n" +
"i0qwgh7HHc7wWqOOQuSqlEnrWRrdcI6TSe8R/sErzfTQNoznKWIPYcI/hskk4sdnQ//Yn9/Jvnsv\n" +
"U/BBjOTJxtD+sQbhAl80JcA3R+5sArURQkfzzHOL/YMqzAsn5hTzp7HZCxUqBk3KaHRxV7NefeOE\n" +
"xlZuWSmxYWfbFIs4kx19/1t7h8CHQWezw+G60G2VBtSBBxDnhBWvqG6R/wpzJ3nEhPLLY9T+XIHe\n" +
"ipzdMOOOUZorfIg7M+pyYPji+ZIZxIpY5OjrOzXHciAjRtr5Y7l99K1CG1LguQKBgQDrQfIMxxtZ\n" +
"vxU/1cRmUV9l7pt5bjV5R6byXq178LxPKVYNjdZ840Q0/OpZEVqaT1xKVi35ohP1QfNjxPLlHD+K\n" +
"iDAR9z6zkwjIrbwPCnb5kuXy4lpwPcmmmkva25fI7qlpHtbcuQdoBdCfr/KkKaUCMPyY89LCXgEw\n" +
"5KTDj64UywKBgQCNfbO+eZLGzhiHhtNJurresCsIGWlInv322gL8CSfBMYl6eNfUTZvUDdFhPISL\n" +
"UljKWzXDrjw0ujFSPR0XhUGtiq89H+HUTuPPYv25gVXO+HTgBFZEPl4PpA+BUsSVZy0NddneyqLk\n" +
"42Wey9omY9Q8WsdNQS5cbUvy0uG6WFoX7wKBgQDZ1jpW8pa0x2bZsQsm4vo+3G5CRnZlUp+XlWt2\n" +
"dDcp5dC0xD1zbs1dc0NcLeGDOTDv9FSl7hok42iHXXq8AygjEm/QcuwwQ1nC2HxmQP5holAiUs4D\n" +
"WHM8PWs3wFYPzE459EBoKTxeaeP/uWAn+he8q7d5uWvSZlEcANs/6e77eQKBgD21Ar0hfFfj7mK8\n" +
"9E0FeRZBsqK3omkfnhcYgZC11Xa2SgT1yvs2Va2n0RcdM5kncr3eBZav2GYOhhAdwyBM55XuE/sO\n" +
"eokDVutNeuZ6d5fqV96TRaRBpvgfTvvRwxZ9hvKF4Vz+9wfn/JvCwANaKmegF6ejs7pvmF3whq2k\n" +
"drZVAoGAX5YxQ5XMTD0QbMAl7/6qp6S58xNoVdfCkmkj1ZLKaHKIjS/benkKGlySVQVPexPfnkZx\n" +
"p/Vv9yyphBoudiTBS9Uog66ueLYZqpgxlM/6OhYg86Gm3U2ycvMxYjBM1NFiyze21AqAhI+HX+Ot\n" +
"mraV2/guSgDgZAhukRZzeQ2RucI=\n" +
"-----END PRIVATE KEY-----";
static {
Throwable cause = null;
if (SystemPropertyUtil.getBoolean("io.netty.handler.ssl.noOpenSsl", false)) {
cause = new UnsupportedOperationException(
"OpenSSL was explicit disabled with -Dio.netty.handler.ssl.noOpenSsl=true");
logger.debug(
"netty-tcnative explicit disabled; " +
OpenSslEngine.class.getSimpleName() + " will be unavailable.", cause);
} else {
// Test if netty-tcnative is in the classpath first.
try {
Class.forName("io.netty.internal.tcnative.SSL", false, OpenSsl.class.getClassLoader());
} catch (ClassNotFoundException t) {
cause = t;
logger.debug(
"netty-tcnative not in the classpath; " +
OpenSslEngine.class.getSimpleName() + " will be unavailable.");
}
// If in the classpath, try to load the native library and initialize netty-tcnative.
if (cause == null) {
try {
// The JNI library was not already loaded. Load it now.
loadTcNative();
} catch (Throwable t) {
cause = t;
logger.debug(
"Failed to load netty-tcnative; " +
OpenSslEngine.class.getSimpleName() + " will be unavailable, unless the " +
"application has already loaded the symbols by some other means. " +
"See https://netty.io/wiki/forked-tomcat-native.html for more information.", t);
}
try {
String engine = SystemPropertyUtil.get("io.netty.handler.ssl.openssl.engine", null);
if (engine == null) {
logger.debug("Initialize netty-tcnative using engine: 'default'");
} else {
logger.debug("Initialize netty-tcnative using engine: '{}'", engine);
}
initializeTcNative(engine);
// The library was initialized successfully. If loading the library failed above,
// reset the cause now since it appears that the library was loaded by some other
// means.
cause = null;
} catch (Throwable t) {
if (cause == null) {
cause = t;
}
logger.debug(
"Failed to initialize netty-tcnative; " +
OpenSslEngine.class.getSimpleName() + " will be unavailable. " +
"See https://netty.io/wiki/forked-tomcat-native.html for more information.", t);
}
}
}
UNAVAILABILITY_CAUSE = cause;
if (cause == null) {
logger.debug("netty-tcnative using native library: {}", SSL.versionString());
final List defaultCiphers = new ArrayList();
final Set availableOpenSslCipherSuites = new LinkedHashSet(128);
boolean supportsKeyManagerFactory = false;
boolean useKeyManagerFactory = false;
boolean tlsv13Supported = false;
IS_BORINGSSL = "BoringSSL".equals(versionString());
try {
final long sslCtx = SSLContext.make(SSL.SSL_PROTOCOL_ALL, SSL.SSL_MODE_SERVER);
long certBio = 0;
long keyBio = 0;
long cert = 0;
long key = 0;
try {
try {
StringBuilder tlsv13Ciphers = new StringBuilder();
for (String cipher: TLSV13_CIPHERS) {
String converted = CipherSuiteConverter.toOpenSsl(cipher, IS_BORINGSSL);
if (converted != null) {
tlsv13Ciphers.append(converted).append(':');
}
}
if (tlsv13Ciphers.length() == 0) {
tlsv13Supported = false;
} else {
tlsv13Ciphers.setLength(tlsv13Ciphers.length() - 1);
SSLContext.setCipherSuite(sslCtx, tlsv13Ciphers.toString() , true);
tlsv13Supported = true;
}
} catch (Exception ignore) {
tlsv13Supported = false;
}
SSLContext.setCipherSuite(sslCtx, "ALL", false);
final long ssl = SSL.newSSL(sslCtx, true);
try {
for (String c: SSL.getCiphers(ssl)) {
// Filter out bad input.
if (c == null || c.isEmpty() || availableOpenSslCipherSuites.contains(c) ||
// Filter out TLSv1.3 ciphers if not supported.
!tlsv13Supported && isTLSv13Cipher(c)) {
continue;
}
availableOpenSslCipherSuites.add(c);
}
if (IS_BORINGSSL) {
// Currently BoringSSL does not include these when calling SSL.getCiphers() even when these
// are supported.
Collections.addAll(availableOpenSslCipherSuites,
"TLS_AES_128_GCM_SHA256",
"TLS_AES_256_GCM_SHA384" ,
"TLS_CHACHA20_POLY1305_SHA256",
"AEAD-AES128-GCM-SHA256",
"AEAD-AES256-GCM-SHA384",
"AEAD-CHACHA20-POLY1305-SHA256");
}
PemEncoded privateKey = PemPrivateKey.valueOf(KEY.getBytes(CharsetUtil.US_ASCII));
try {
// Let's check if we can set a callback, which may not work if the used OpenSSL version
// is to old.
SSLContext.setCertificateCallback(sslCtx, null);
X509Certificate certificate = selfSignedCertificate();
certBio = ReferenceCountedOpenSslContext.toBIO(ByteBufAllocator.DEFAULT, certificate);
cert = SSL.parseX509Chain(certBio);
keyBio = ReferenceCountedOpenSslContext.toBIO(
UnpooledByteBufAllocator.DEFAULT, privateKey.retain());
key = SSL.parsePrivateKey(keyBio, null);
SSL.setKeyMaterial(ssl, cert, key);
supportsKeyManagerFactory = true;
try {
boolean propertySet = SystemPropertyUtil.contains(
"io.netty.handler.ssl.openssl.useKeyManagerFactory");
if (!IS_BORINGSSL) {
useKeyManagerFactory = SystemPropertyUtil.getBoolean(
"io.netty.handler.ssl.openssl.useKeyManagerFactory", true);
if (propertySet) {
logger.info("System property " +
"'io.netty.handler.ssl.openssl.useKeyManagerFactory'" +
" is deprecated and so will be ignored in the future");
}
} else {
useKeyManagerFactory = true;
if (propertySet) {
logger.info("System property " +
"'io.netty.handler.ssl.openssl.useKeyManagerFactory'" +
" is deprecated and will be ignored when using BoringSSL");
}
}
} catch (Throwable ignore) {
logger.debug("Failed to get useKeyManagerFactory system property.");
}
} catch (Error ignore) {
logger.debug("KeyManagerFactory not supported.");
} finally {
privateKey.release();
}
} finally {
SSL.freeSSL(ssl);
if (certBio != 0) {
SSL.freeBIO(certBio);
}
if (keyBio != 0) {
SSL.freeBIO(keyBio);
}
if (cert != 0) {
SSL.freeX509Chain(cert);
}
if (key != 0) {
SSL.freePrivateKey(key);
}
}
} finally {
SSLContext.free(sslCtx);
}
} catch (Exception e) {
logger.warn("Failed to get the list of available OpenSSL cipher suites.", e);
}
AVAILABLE_OPENSSL_CIPHER_SUITES = Collections.unmodifiableSet(availableOpenSslCipherSuites);
final Set availableJavaCipherSuites = new LinkedHashSet(
AVAILABLE_OPENSSL_CIPHER_SUITES.size() * 2);
for (String cipher: AVAILABLE_OPENSSL_CIPHER_SUITES) {
// Included converted but also openssl cipher name
if (!isTLSv13Cipher(cipher)) {
availableJavaCipherSuites.add(CipherSuiteConverter.toJava(cipher, "TLS"));
availableJavaCipherSuites.add(CipherSuiteConverter.toJava(cipher, "SSL"));
} else {
// TLSv1.3 ciphers have the correct format.
availableJavaCipherSuites.add(cipher);
}
}
addIfSupported(availableJavaCipherSuites, defaultCiphers, DEFAULT_CIPHER_SUITES);
addIfSupported(availableJavaCipherSuites, defaultCiphers, TLSV13_CIPHER_SUITES);
useFallbackCiphersIfDefaultIsEmpty(defaultCiphers, availableJavaCipherSuites);
DEFAULT_CIPHERS = Collections.unmodifiableList(defaultCiphers);
AVAILABLE_JAVA_CIPHER_SUITES = Collections.unmodifiableSet(availableJavaCipherSuites);
final Set availableCipherSuites = new LinkedHashSet(
AVAILABLE_OPENSSL_CIPHER_SUITES.size() + AVAILABLE_JAVA_CIPHER_SUITES.size());
availableCipherSuites.addAll(AVAILABLE_OPENSSL_CIPHER_SUITES);
availableCipherSuites.addAll(AVAILABLE_JAVA_CIPHER_SUITES);
AVAILABLE_CIPHER_SUITES = availableCipherSuites;
SUPPORTS_KEYMANAGER_FACTORY = supportsKeyManagerFactory;
USE_KEYMANAGER_FACTORY = useKeyManagerFactory;
Set protocols = new LinkedHashSet(6);
// Seems like there is no way to explicitly disable SSLv2Hello in openssl so it is always enabled
protocols.add(PROTOCOL_SSL_V2_HELLO);
if (doesSupportProtocol(SSL.SSL_PROTOCOL_SSLV2, SSL.SSL_OP_NO_SSLv2)) {
protocols.add(PROTOCOL_SSL_V2);
}
if (doesSupportProtocol(SSL.SSL_PROTOCOL_SSLV3, SSL.SSL_OP_NO_SSLv3)) {
protocols.add(PROTOCOL_SSL_V3);
}
if (doesSupportProtocol(SSL.SSL_PROTOCOL_TLSV1, SSL.SSL_OP_NO_TLSv1)) {
protocols.add(PROTOCOL_TLS_V1);
}
if (doesSupportProtocol(SSL.SSL_PROTOCOL_TLSV1_1, SSL.SSL_OP_NO_TLSv1_1)) {
protocols.add(PROTOCOL_TLS_V1_1);
}
if (doesSupportProtocol(SSL.SSL_PROTOCOL_TLSV1_2, SSL.SSL_OP_NO_TLSv1_2)) {
protocols.add(PROTOCOL_TLS_V1_2);
}
// This is only supported by java11 and later.
if (tlsv13Supported && doesSupportProtocol(SSL.SSL_PROTOCOL_TLSV1_3, SSL.SSL_OP_NO_TLSv1_3)) {
protocols.add(PROTOCOL_TLS_V1_3);
TLSV13_SUPPORTED = true;
} else {
TLSV13_SUPPORTED = false;
}
SUPPORTED_PROTOCOLS_SET = Collections.unmodifiableSet(protocols);
SUPPORTS_OCSP = doesSupportOcsp();
if (logger.isDebugEnabled()) {
logger.debug("Supported protocols (OpenSSL): {} ", SUPPORTED_PROTOCOLS_SET);
logger.debug("Default cipher suites (OpenSSL): {}", DEFAULT_CIPHERS);
}
} else {
DEFAULT_CIPHERS = Collections.emptyList();
AVAILABLE_OPENSSL_CIPHER_SUITES = Collections.emptySet();
AVAILABLE_JAVA_CIPHER_SUITES = Collections.emptySet();
AVAILABLE_CIPHER_SUITES = Collections.emptySet();
SUPPORTS_KEYMANAGER_FACTORY = false;
USE_KEYMANAGER_FACTORY = false;
SUPPORTED_PROTOCOLS_SET = Collections.emptySet();
SUPPORTS_OCSP = false;
TLSV13_SUPPORTED = false;
IS_BORINGSSL = false;
}
}
/**
* Returns a self-signed {@link X509Certificate} for {@code netty.io}.
*/
static X509Certificate selfSignedCertificate() throws CertificateException {
return (X509Certificate) SslContext.X509_CERT_FACTORY.generateCertificate(
new ByteArrayInputStream(CERT.getBytes(CharsetUtil.US_ASCII))
);
}
private static boolean doesSupportOcsp() {
boolean supportsOcsp = false;
if (version() >= 0x10002000L) {
long sslCtx = -1;
try {
sslCtx = SSLContext.make(SSL.SSL_PROTOCOL_TLSV1_2, SSL.SSL_MODE_SERVER);
SSLContext.enableOcsp(sslCtx, false);
supportsOcsp = true;
} catch (Exception ignore) {
// ignore
} finally {
if (sslCtx != -1) {
SSLContext.free(sslCtx);
}
}
}
return supportsOcsp;
}
private static boolean doesSupportProtocol(int protocol, int opt) {
if (opt == 0) {
// If the opt is 0 the protocol is not supported. This is for example the case with BoringSSL and SSLv2.
return false;
}
long sslCtx = -1;
try {
sslCtx = SSLContext.make(protocol, SSL.SSL_MODE_COMBINED);
return true;
} catch (Exception ignore) {
return false;
} finally {
if (sslCtx != -1) {
SSLContext.free(sslCtx);
}
}
}
/**
* Returns {@code true} if and only if
* {@code netty-tcnative} and its OpenSSL support
* are available.
*/
public static boolean isAvailable() {
return UNAVAILABILITY_CAUSE == null;
}
/**
* Returns {@code true} if the used version of openssl supports
* ALPN.
*/
public static boolean isAlpnSupported() {
return version() >= 0x10002000L;
}
/**
* Returns {@code true} if the used version of OpenSSL supports OCSP stapling.
*/
public static boolean isOcspSupported() {
return SUPPORTS_OCSP;
}
/**
* Returns the version of the used available OpenSSL library or {@code -1} if {@link #isAvailable()}
* returns {@code false}.
*/
public static int version() {
return isAvailable() ? SSL.version() : -1;
}
/**
* Returns the version string of the used available OpenSSL library or {@code null} if {@link #isAvailable()}
* returns {@code false}.
*/
public static String versionString() {
return isAvailable() ? SSL.versionString() : null;
}
/**
* Ensure that {@code netty-tcnative} and
* its OpenSSL support are available.
*
* @throws UnsatisfiedLinkError if unavailable
*/
public static void ensureAvailability() {
if (UNAVAILABILITY_CAUSE != null) {
throw (Error) new UnsatisfiedLinkError(
"failed to load the required native library").initCause(UNAVAILABILITY_CAUSE);
}
}
/**
* Returns the cause of unavailability of
* {@code netty-tcnative} and its OpenSSL support.
*
* @return the cause if unavailable. {@code null} if available.
*/
public static Throwable unavailabilityCause() {
return UNAVAILABILITY_CAUSE;
}
/**
* @deprecated use {@link #availableOpenSslCipherSuites()}
*/
@Deprecated
public static Set availableCipherSuites() {
return availableOpenSslCipherSuites();
}
/**
* Returns all the available OpenSSL cipher suites.
* Please note that the returned array may include the cipher suites that are insecure or non-functional.
*/
public static Set availableOpenSslCipherSuites() {
return AVAILABLE_OPENSSL_CIPHER_SUITES;
}
/**
* Returns all the available cipher suites (Java-style).
* Please note that the returned array may include the cipher suites that are insecure or non-functional.
*/
public static Set availableJavaCipherSuites() {
return AVAILABLE_JAVA_CIPHER_SUITES;
}
/**
* Returns {@code true} if and only if the specified cipher suite is available in OpenSSL.
* Both Java-style cipher suite and OpenSSL-style cipher suite are accepted.
*/
public static boolean isCipherSuiteAvailable(String cipherSuite) {
String converted = CipherSuiteConverter.toOpenSsl(cipherSuite, IS_BORINGSSL);
if (converted != null) {
cipherSuite = converted;
}
return AVAILABLE_OPENSSL_CIPHER_SUITES.contains(cipherSuite);
}
/**
* Returns {@code true} if {@link javax.net.ssl.KeyManagerFactory} is supported when using OpenSSL.
*/
public static boolean supportsKeyManagerFactory() {
return SUPPORTS_KEYMANAGER_FACTORY;
}
/**
* Always returns {@code true} if {@link #isAvailable()} returns {@code true}.
*
* @deprecated Will be removed because hostname validation is always done by a
* {@link javax.net.ssl.TrustManager} implementation.
*/
@Deprecated
public static boolean supportsHostnameValidation() {
return isAvailable();
}
static boolean useKeyManagerFactory() {
return USE_KEYMANAGER_FACTORY;
}
static long memoryAddress(ByteBuf buf) {
assert buf.isDirect();
return buf.hasMemoryAddress() ? buf.memoryAddress() : Buffer.address(buf.nioBuffer());
}
private OpenSsl() { }
private static void loadTcNative() throws Exception {
String os = PlatformDependent.normalizedOs();
String arch = PlatformDependent.normalizedArch();
Set libNames = new LinkedHashSet(4);
String staticLibName = "netty_tcnative";
// First, try loading the platform-specific library. Platform-specific
// libraries will be available if using a tcnative uber jar.
libNames.add(staticLibName + "_" + os + '_' + arch);
if ("linux".equalsIgnoreCase(os)) {
// Fedora SSL lib so naming (libssl.so.10 vs libssl.so.1.0.0)..
libNames.add(staticLibName + "_" + os + '_' + arch + "_fedora");
}
libNames.add(staticLibName + "_" + arch);
libNames.add(staticLibName);
NativeLibraryLoader.loadFirstAvailable(SSL.class.getClassLoader(),
libNames.toArray(new String[0]));
}
private static boolean initializeTcNative(String engine) throws Exception {
return Library.initialize("provided", engine);
}
static void releaseIfNeeded(ReferenceCounted counted) {
if (counted.refCnt() > 0) {
ReferenceCountUtil.safeRelease(counted);
}
}
static boolean isTlsv13Supported() {
return TLSV13_SUPPORTED;
}
static boolean isBoringSSL() {
return IS_BORINGSSL;
}
}
