org.wildfly.naming.client.ProviderEnvironment Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2017 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 org.wildfly.naming.client;
import static java.security.AccessController.doPrivileged;
import static org.jboss.naming.remote.client.InitialContextFactory.CALLBACK_HANDLER_KEY;
import static org.jboss.naming.remote.client.InitialContextFactory.PASSWORD_BASE64_KEY;
import static org.jboss.naming.remote.client.InitialContextFactory.REALM_KEY;
import static org.wildfly.naming.client.util.EnvironmentUtils.CONNECT_OPTIONS;
import static org.wildfly.naming.client.util.EnvironmentUtils.EJB_CALLBACK_HANDLER_CLASS_KEY;
import static org.wildfly.naming.client.util.EnvironmentUtils.EJB_HOST_KEY;
import static org.wildfly.naming.client.util.EnvironmentUtils.EJB_PASSWORD_BASE64_KEY;
import static org.wildfly.naming.client.util.EnvironmentUtils.EJB_PASSWORD_KEY;
import static org.wildfly.naming.client.util.EnvironmentUtils.EJB_PORT_KEY;
import static org.wildfly.naming.client.util.EnvironmentUtils.EJB_REMOTE_CONNECTION_PROVIDER_PREFIX;
import static org.wildfly.naming.client.util.EnvironmentUtils.EJB_USERNAME_KEY;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.function.Supplier;
import javax.naming.ConfigurationException;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.security.auth.callback.CallbackHandler;
import org.jboss.remoting3.RemotingOptions;
import org.wildfly.common.Assert;
import org.wildfly.common.expression.Expression;
import org.wildfly.naming.client._private.Messages;
import org.wildfly.naming.client.util.EnvironmentUtils;
import org.wildfly.naming.client.util.NetworkUtils;
import org.wildfly.security.auth.client.AuthenticationConfiguration;
import org.wildfly.security.auth.client.AuthenticationContext;
import org.wildfly.security.auth.client.MatchRule;
import org.wildfly.security.auth.server.IdentityCredentials;
import org.wildfly.security.sasl.localuser.LocalUserClient;
import org.wildfly.common.iteration.CodePointIterator;
import org.xnio.Option;
import org.xnio.OptionMap;
import org.xnio.Options;
import org.xnio.Property;
import org.xnio.Sequence;
/**
* Environmental information pertaining to a naming provider.
*
* @author David M. Lloyd
*/
public final class ProviderEnvironment {
private static final long BACKOFF_MASK = 0x7FFF;
public static final long TIME_MASK = ~BACKOFF_MASK;
private final List providerUris;
private final ConcurrentHashMap blocklist = new ConcurrentHashMap<>(0);
private final Supplier authenticationContextSupplier;
@SuppressWarnings({ "Convert2Lambda", "Anonymous2MethodRef" })
static final Supplier DEFAULT_AUTH_CTXT_SUPPLIER = new Supplier() {
public AuthenticationContext get() {
return AuthenticationContext.captureCurrent();
}
};
ProviderEnvironment(Builder builder) {
final List providerUris = builder.getProviderUris();
this.providerUris = providerUris.isEmpty() ? Collections.emptyList() : providerUris.size() == 1 ? Collections.singletonList(providerUris.get(0)) : Collections.unmodifiableList(new ArrayList<>(providerUris));
this.authenticationContextSupplier = builder.getAuthenticationContextSupplier();
}
/**
* Get the list of provider URLs.
*
* @return the list of provider URLs (not {@code null})
*/
public List getProviderUris() {
return providerUris;
}
/**
* Gets the blocklist for this provider. The map should generally not be
* mutated, with updates instead going through {@link #updateBlocklist(URI)}
* and {@link #dropFromBlocklist(URI)}.
*
* The map is keyed by destination URI, as specified by
* PROVIDER_URL. The value is a long that loosely corresponds
* to an expiration timestamp. More specifically the time portion is the
* first 49 bits, retrievable using a bitwise AND on {@link #TIME_MASK}. The
* remaining bits are used to store the current back-off multiplier. These
* are typically not of interest to a user or provider implementor, as
* {@link #updateBlocklist(URI)} will update them accordingly.
*
*
* A simple provider implementation would perform the falling
* pseudo-code when selecting a destination:
*
* {@code
*
* URI location = ...
* Long timeout = env.getBlackList().get(location);
* if (timeout == null || time >= (timeout & TIME_MASK)) {
* // blocklist entry expired!!
* } else {
* // Ignoring, still blocklisted!
* }
*
* }
*
* @return a concurrent map representing the blocklist
*
* @deprecated replaced by {@link #getBlocklist()}
*/
@Deprecated
public ConcurrentMap getBlackList() {
return blocklist;
}
/**
* Gets the blocklist for this provider. The map should generally not be
* mutated, with updates instead going through {@link #updateBlocklist(URI)}
* and {@link #dropFromBlocklist(URI)}.
*
* The map is keyed by destination URI, as specified by
* PROVIDER_URL. The value is a long that loosely corresponds
* to an expiration timestamp. More specifically the time portion is the
* first 49 bits, retrievable using a bitwise AND on {@link #TIME_MASK}. The
* remaining bits are used to store the current back-off multiplier. These
* are typically not of interest to a user or provider implementor, as
* {@link #updateBlocklist(URI)} will update them accordingly.
*
*
* A simple provider implementation would perform the falling
* pseudo-code when selecting a destination:
*
* {@code
*
* URI location = ...
* Long timeout = env.getBlocklist().get(location);
* if (timeout == null || time >= (timeout & TIME_MASK)) {
* // blocklist entry expired!!
* } else {
* // Ignoring, still blocklisted!
* }
*
* }
*
* @return a concurrent map representing the blocklist
*/
public ConcurrentMap getBlocklist() {
return blocklist;
}
/**
* Adds location to blocklist, or extends it's back-off value if already
* present in the blocklist. Each call doubles the back-off time, as well
* as resets the starting time. Providers should call this method anytime
* a location is non-responsive.
*
* @param location the URI to blocklist.
*
* @deprecated replaced by {@link #updateBlocklist(URI)}
*/
@Deprecated
public void updateBlacklist(URI location) {
updateBlocklist(location);
}
/**
* Adds location to blocklist, or extends it's back-off value if already
* present in the blocklist. Each call doubles the back-off time, as well
* as resets the starting time. Providers should call this method anytime
* a location is non-responsive.
*
* @param location the URI to blocklist.
*/
public void updateBlocklist(URI location) {
// blocklist entry value format =
// 49 bits truncated ceiling timestamp | 15 bits backoff multiplier
// Loss of 15 bits corresponds to roughly a minute (65535 millis)
// multiplier doubles each update, adding a rough delay of 2^16 to 2^29
// millis (around 1 minute to 6 days). LSB is used to pad for ceiling.
for (;;) {
long time = System.currentTimeMillis();
Long entry = blocklist.get(location);
if (entry == null) {
// Ceiling + roughly 1.5 minutes (starting point)
long next = (((time >>> 15) + 3L) << 15) | 2L;
entry = blocklist.putIfAbsent(location, next);
if (entry == null) {
return;
}
}
int backoff = (int) ((entry & BACKOFF_MASK) << 1);
backoff = backoff > BACKOFF_MASK ? backoff >> 1 : backoff;
long next = (((time >>> 15) + backoff + 1) << 15) | backoff;
if (blocklist.replace(location, entry, next)) {
return;
}
}
}
/**
* Removes the specified location from the blocklist, allowing it to be
* used again.
*
* @param location the location to remove
*
* @deprecated replaced by {@link #dropFromBlocklist(URI)}
*/
@Deprecated
public void dropFromBlacklist(URI location) {
blocklist.remove(location);
}
/**
* Removes the specified location from the blocklist, allowing it to be
* used again.
*
* @param location the location to remove
*/
public void dropFromBlocklist(URI location) {
blocklist.remove(location);
}
/**
* Get the authentication context supplier to use. The default supplier simply captures the current context from
* the calling thread, but this behavior can be modified by establishing authentication information on the
* environment of the initial context or by individual naming providers.
*
* @return the authentication context supplier to use (must not be {@code null})
*/
public Supplier getAuthenticationContextSupplier() {
return authenticationContextSupplier;
}
/**
* The builder for {@code ProviderEnvironment} instances.
*/
public static final class Builder {
private final List providerUris = new ArrayList<>();
private final Set encounteredUris = new HashSet<>();
private Supplier authenticationContextSupplier = DEFAULT_AUTH_CTXT_SUPPLIER;
/**
* Construct a new instance.
*/
public Builder() {
}
/**
* Add a provider URL to the environment being built.
*
* @param uri the URI of the provider (must not be {@code null})
* @return this builder
*/
public Builder addProviderUri(URI uri) {
Assert.checkNotNullParam("uri", uri);
if (! encounteredUris.add(uri)) {
Messages.log.ignoringDuplicateDestination(uri);
}
providerUris.add(uri);
return this;
}
/**
* Add a provider URL to the environment being built.
*
* @param uris the URIs of the provider(s) (must not be {@code null} or have {@code null} members)
* @return this builder
*/
public Builder addProviderUris(Collection uris) {
Assert.checkNotNullParam("uris", uris);
for (URI uri : uris) {
Assert.checkNotNullParam("uri", uri);
providerUris.add(uri);
}
return this;
}
/**
* Set the authentication context supplier to use.
*
* @param authenticationContextSupplier the authentication context supplier to use (must not be {@code null})
* @return this builder
*/
public Builder setAuthenticationContextSupplier(final Supplier authenticationContextSupplier) {
Assert.checkNotNullParam("authenticationContextSupplier", authenticationContextSupplier);
this.authenticationContextSupplier = authenticationContextSupplier;
return this;
}
List getProviderUris() {
return providerUris;
}
Supplier getAuthenticationContextSupplier() {
return authenticationContextSupplier;
}
/**
* Populate this builder from the given JNDI environment map. The following information will be populated:
*
*
* - Provider URLs by reading standard and compatibility properties
* -
* Authentication information including:
*
* - Authentication name
* - Credential(s)
*
*
*
*
* @param environment the environment map (must not be {@code null})
* @return this builder (populated from the map)
* @throws ConfigurationException if the given environment is invalid for some reason
* @throws NamingException if some other error occurred
*/
public Builder populateFromEnvironment(Map environment) throws NamingException {
Assert.checkNotNullParam("environment", environment);
final ClassLoader classLoader = secureGetContextClassLoader();
// Start with the simple ones
final String userName = getEnvString(environment, Context.SECURITY_PRINCIPAL, null, true);
// Get provider URLs
boolean gotProviders = populateProviderUris(environment);
// Check for top-level authentication defaults
final String securityProtocol = getEnvString(environment, Context.SECURITY_PROTOCOL, null, true);
final String globalSslEnabledOption = getEnvString(environment, EJB_REMOTE_CONNECTION_PROVIDER_PREFIX + Options.SSL_ENABLED, null, true);
final boolean isSsl = globalSslEnabledOption != null ? Boolean.parseBoolean(globalSslEnabledOption) : securityProtocol != null && "ssl".equalsIgnoreCase(securityProtocol.trim());
final String callbackClass = getEnvString(environment, CALLBACK_HANDLER_KEY, null, true);
final IdentityCredentials credentials = EnvironmentUtils.getSecurityCredentials(environment);
final String passwordBase64 = getEnvString(environment, PASSWORD_BASE64_KEY, null, false);
final String securityRealm = getEnvString(environment, REALM_KEY, null, true);
if (callbackClass != null && (userName != null || credentials != null || passwordBase64 != null)) {
throw Messages.log.callbackHandlerAndUsernameAndPasswordSpecified();
}
// we definitely must override default auth if any of these are given; we _may_ have to do so if compat props are given
boolean overrideDefaultAuth = credentials != null || passwordBase64 != null || callbackClass != null || securityRealm != null || userName != null;
CallbackHandler callbackHandler = null;
if (callbackClass != null) {
try {
final Class clazz = Class.forName(callbackClass, true, classLoader);
callbackHandler = (CallbackHandler) clazz.newInstance();
} catch (ClassNotFoundException e) {
throw Messages.log.failedToLoadCallbackHandlerClass(e, callbackClass);
} catch (Exception e) {
throw Messages.log.failedToInstantiateCallbackHandlerInstance(e, callbackClass);
}
}
OptionMap remotingOptions = getOptionMap(environment, CONNECT_OPTIONS_PREFIX, Builder.class.getClassLoader());
if (callbackHandler != null || userName != null) {
// disable quiet local auth
remotingOptions = setQuietLocalAuth(remotingOptions, false);
}
AuthenticationConfiguration globalAuthConf = RemotingOptions.mergeOptionsIntoAuthenticationConfiguration(remotingOptions, AuthenticationConfiguration.empty());
if (userName != null) {
globalAuthConf = globalAuthConf.useName(userName);
}
if (callbackHandler != null) {
globalAuthConf = globalAuthConf.useCallbackHandler(callbackHandler);
}
if (credentials != null) {
globalAuthConf = globalAuthConf.useCredentials(credentials);
} else if (passwordBase64 != null) {
globalAuthConf = globalAuthConf.usePassword(CodePointIterator.ofString(passwordBase64).base64Decode().asUtf8String().drainToString());
}
if (securityRealm != null) {
globalAuthConf = globalAuthConf.useRealm(securityRealm);
}
// ===
// at this point on, we are only processing legacy configuration; this may be dropped in some future version.
// ===
// now, spin through the environment to scan for legacy properties; they are defined on a per-connection basis
Set connections = null;
for (String key : environment.keySet()) {
String name = connectionNameOf(key);
if (name != null) {
// this is it...
if (gotProviders) {
Messages.log.ignoringLegacyProperties();
// don't actually process any
break;
}
Messages.log.deprecatedProperties();
if (connections == null) {
connections = new HashSet<>();
}
connections.add(name);
}
}
Map overrides = null;
if (! gotProviders && connections != null) {
// now process each defined connection to synthesize compatibility provider URIs
for (String connection : connections) {
final String connectionPrefix = REMOTE_CONNECTION_PREFIX + connection + ".";
final String connUserName = getEnvString(environment, connectionPrefix + EJB_USERNAME_KEY, null, true);
final String rawHostString = getEnvString(environment, connectionPrefix + EJB_HOST_KEY, null, true);
final String connHostName = NetworkUtils.formatPossibleIpv6Address(rawHostString);
final String connPassword = getEnvString(environment, connectionPrefix + EJB_PASSWORD_KEY, null, true);
final String connPasswordBase64 = getEnvString(environment, connectionPrefix + EJB_PASSWORD_BASE64_KEY, null, true);
final String connCallbackHandlerClass = getEnvString(environment, connectionPrefix + EJB_CALLBACK_HANDLER_CLASS_KEY, null, true);
final boolean sslEnabled = Boolean.parseBoolean(getEnvString(environment, connectionPrefix + CONNECT_OPTIONS + Options.SSL_ENABLED, Boolean.toString(isSsl), true));
final String protocol = getEnvString(environment, connectionPrefix + "protocol", sslEnabled ? "remote+https" : "remote+http", true);
final int connPort = getEnvInt(environment, connectionPrefix + EJB_PORT_KEY, sslEnabled ? 443 : 80, true);
if (connCallbackHandlerClass != null && (connUserName != null || connPassword != null || connPasswordBase64 != null)) {
throw Messages.log.callbackHandlerAndUsernameAndPasswordSpecified();
}
CallbackHandler connCallbackHandler = null;
if (connCallbackHandlerClass != null) {
try {
final Class clazz = Class.forName(connCallbackHandlerClass, true, classLoader);
connCallbackHandler = (CallbackHandler) clazz.newInstance();
} catch (ClassNotFoundException e) {
throw Messages.log.failedToLoadCallbackHandlerClass(e, connCallbackHandlerClass);
} catch (Exception e) {
throw Messages.log.failedToInstantiateCallbackHandlerInstance(e, connCallbackHandlerClass);
}
}
OptionMap connRemotingOptions = getOptionMap(environment, connectionPrefix + CONNECT_OPTIONS, Builder.class.getClassLoader());
if (connCallbackHandler != null || connUserName != null) {
// disable quiet local auth
connRemotingOptions = setQuietLocalAuth(connRemotingOptions, false);
}
if (connHostName != null) {
// we have a proper host, which is the minimum
final URI uri;
try {
uri = new URI(
protocol,
null,
connHostName,
connPort,
null,
null,
null
);
} catch (URISyntaxException e) {
throw Messages.log.invalidProviderGenerated(e);
}
if (connPassword != null || connPasswordBase64 != null || connCallbackHandler != null || connUserName != null) {
if (overrides == null) {
overrides = new HashMap<>();
}
AuthenticationConfiguration authConfig = RemotingOptions.mergeOptionsIntoAuthenticationConfiguration(connRemotingOptions, AuthenticationConfiguration.empty());
if (connUserName != null) {
authConfig = authConfig.useName(connUserName);
}
if (connCallbackHandler != null) {
authConfig = authConfig.useCallbackHandler(connCallbackHandler);
}
if (connPassword != null) {
authConfig = authConfig.usePassword(connPassword);
} else if (connPasswordBase64 != null) {
authConfig = authConfig.usePassword(CodePointIterator.ofString(connPasswordBase64).base64Decode().asUtf8String().drainToString());
}
overrides.putIfAbsent(uri, authConfig);
}
addProviderUri(uri);
}
}
}
AuthenticationContext context = AuthenticationContext.empty();
if (overrides != null) {
// we have to add our config on a per-call basis, to overlay the inherited env
for (Map.Entry entry : overrides.entrySet()) {
final URI key = entry.getKey();
final AuthenticationConfiguration configuration = entry.getValue();
final MatchRule rule = ruleFromLocation(key);
context = context.with(rule, configuration);
}
}
if (overrideDefaultAuth) {
// lastly, add the default rule
context = context.with(MatchRule.ALL, globalAuthConf);
}
if (overrideDefaultAuth || overrides != null) {
setAuthenticationContextSupplier(new FixedAuthenticationContextSupplier(context, ! overrideDefaultAuth));
}
return this;
}
private OptionMap getOptionMap(final Map environment, final String prefix, final ClassLoader classLoader) {
OptionMap.Builder builder = OptionMap.builder();
builder.set(Options.SASL_POLICY_NOANONYMOUS, false);
for (String name : environment.keySet()) {
if (name.startsWith(prefix)) {
final String optionName = name.substring(prefix.length());
final Option option = Option.fromString(optionName, classLoader);
final Object valueObj = environment.get(name);
if (valueObj != null) builder.parse(option, valueObj.toString(), classLoader);
}
}
return builder.getMap();
}
private static MatchRule ruleFromLocation(final URI uri) {
MatchRule rule = MatchRule.ALL;
final String scheme = uri.getScheme();
if (scheme != null) {
rule = rule.matchProtocol(scheme);
}
final String host = uri.getHost();
if (host != null) {
rule = rule.matchHost(host);
}
final int port = uri.getPort();
if (port != -1) {
rule = rule.matchPort(port);
}
final String path = uri.getPath();
if (path != null && ! path.isEmpty()) {
rule = rule.matchPath(path);
}
if (path == null && port == -1 && host == null) {
final String schemeSpecificPart = uri.getSchemeSpecificPart();
if (schemeSpecificPart != null) {
rule = rule.matchUrnName(schemeSpecificPart);
}
}
return rule;
}
private static final String REMOTE_CONNECTION_PREFIX = "remote.connection.";
private static final int REMOTE_CONNECTION_PREFIX_LEN = REMOTE_CONNECTION_PREFIX.length();
private static final String CONNECT_OPTIONS_PREFIX = "jboss.naming.client.connect.options.";
private static String connectionNameOf(String key) {
if (key.startsWith(REMOTE_CONNECTION_PREFIX)) {
int idx = key.indexOf('.', REMOTE_CONNECTION_PREFIX_LEN);
final String connectionName = (idx == - 1 ? key.substring(REMOTE_CONNECTION_PREFIX_LEN) : key.substring(REMOTE_CONNECTION_PREFIX_LEN, idx)).trim();
if (! connectionName.isEmpty()) {
return connectionName;
}
}
return null;
}
private boolean populateProviderUris(Map env) throws ConfigurationException {
Object urlString = env.get(Context.PROVIDER_URL);
if (urlString != null) {
String providerUriString = Expression.compile(urlString.toString(), Expression.Flag.LENIENT_SYNTAX).evaluateWithPropertiesAndEnvironment(false);
if (! providerUriString.isEmpty()) {
final String[] urls = providerUriString.split(",");
for (String url : urls) {
URI providerUri;
try {
providerUri = new URI(url.trim());
} catch (URISyntaxException e) {
throw Messages.log.invalidProviderUri(e, url);
}
addProviderUri(providerUri);
}
return true;
}
}
return false;
}
/**
* Build the provider environment from a point-in-time snapshot of the values in this builder.
*
* @return the new provider environment
*/
public ProviderEnvironment build() {
return new ProviderEnvironment(this);
}
private static String getEnvString(final Map env, final String propertyName, final String defaultValue, final boolean expand) {
final Object obj = env.get(propertyName);
if (obj == null) {
return defaultValue;
}
final String str = obj.toString();
if (expand) {
final Expression expression = Expression.compile(str, Expression.Flag.LENIENT_SYNTAX);
return expression.evaluateWithPropertiesAndEnvironment(false);
} else {
return str.trim();
}
}
private static int getEnvInt(final Map env, final String propertyName, final int defaultValue, final boolean expand) throws ConfigurationException {
final Object obj = env.get(propertyName);
if (obj == null) {
return defaultValue;
}
if (obj instanceof Number) {
return ((Number) obj).intValue();
}
final String str = obj.toString();
final String resultStr;
if (expand) {
final Expression expression = Expression.compile(str, Expression.Flag.LENIENT_SYNTAX);
resultStr = expression.evaluateWithPropertiesAndEnvironment(false);
} else {
resultStr = str.trim();
}
try {
return Integer.parseInt(resultStr);
} catch (NumberFormatException e) {
throw Messages.log.invalidNumericProperty(e, propertyName, resultStr);
}
}
/**
* Set the quiet local auth property to the given value if the user hasn't already set this property.
*
* @param optionMap the option map
* @param useQuietAuth the value to set the quiet local auth property to
* @return the option map with the quiet local auth property set to the given value if the user hasn't already set this property
*/
private static OptionMap setQuietLocalAuth(final OptionMap optionMap, final boolean useQuietAuth) {
final Sequence existingSaslProps = optionMap.get(Options.SASL_PROPERTIES);
if (existingSaslProps != null) {
for (Property prop : existingSaslProps) {
final String propKey = prop.getKey();
if (propKey.equals(LocalUserClient.QUIET_AUTH) || propKey.equals(LocalUserClient.LEGACY_QUIET_AUTH)) {
// quiet local auth property was already set, do not override it
return optionMap;
}
}
// set the quiet local auth property since it wasn't already set in SASL_PROPERTIES
existingSaslProps.add(Property.of(LocalUserClient.QUIET_AUTH, Boolean.toString(useQuietAuth)));
return optionMap;
}
// set the quiet local auth property since no SASL_PROPERTIES were set
final OptionMap.Builder updatedOptionMapBuilder = OptionMap.builder().addAll(optionMap);
updatedOptionMapBuilder.set(Options.SASL_PROPERTIES, Sequence.of(Property.of(LocalUserClient.QUIET_AUTH, Boolean.toString(useQuietAuth))));
return updatedOptionMapBuilder.getMap();
}
private static ClassLoader secureGetContextClassLoader() {
final ClassLoader contextClassLoader;
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
contextClassLoader = doPrivileged((PrivilegedAction) Builder::getContextClassLoader);
} else {
contextClassLoader = getContextClassLoader();
}
return contextClassLoader;
}
private static ClassLoader getContextClassLoader() {
return Thread.currentThread().getContextClassLoader();
}
}
static final class FixedAuthenticationContextSupplier implements Supplier {
private final AuthenticationContext context;
private final boolean inherit;
FixedAuthenticationContextSupplier(final AuthenticationContext context, final boolean inherit) {
this.context = context;
this.inherit = inherit;
}
public AuthenticationContext get() {
return inherit ? context.with(AuthenticationContext.captureCurrent()) : context;
}
}
}