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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.security.tls;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
import java.util.Optional;
/**
* Utility class for retrieving {@link TransportSecurityOptions} from the system.
*
* @author bjorncs
*/
public class TransportSecurityUtils {
private static ConfigFileBasedTlsContext systemTlsContext;
public static final String CONFIG_FILE_ENVIRONMENT_VARIABLE = "VESPA_TLS_CONFIG_FILE";
public static final String INSECURE_MIXED_MODE_ENVIRONMENT_VARIABLE = "VESPA_TLS_INSECURE_MIXED_MODE";
public static final String INSECURE_AUTHORIZATION_MODE_ENVIRONMENT_VARIABLE = "VESPA_TLS_INSECURE_AUTHORIZATION_MODE";
public static final String CAPABILITIES_ENV_VAR = "VESPA_TLS_CAPABILITIES_ENFORCEMENT_MODE";
private TransportSecurityUtils() {}
public static boolean isTransportSecurityEnabled() {
return isTransportSecurityEnabled(System.getenv());
}
public static boolean isTransportSecurityEnabled(Map<String, String> envVariables) {
return getConfigFile(envVariables).isPresent();
}
public static MixedMode getInsecureMixedMode() {
return getInsecureMixedMode(System.getenv());
}
public static MixedMode getInsecureMixedMode(Map<String, String> envVariables) {
return getEnvironmentVariable(envVariables, INSECURE_MIXED_MODE_ENVIRONMENT_VARIABLE)
.map(MixedMode::fromConfigValue)
.orElse(MixedMode.defaultValue());
}
public static AuthorizationMode getInsecureAuthorizationMode() {
return getInsecureAuthorizationMode(System.getenv());
}
public static AuthorizationMode getInsecureAuthorizationMode(Map<String, String> envVariables) {
return getEnvironmentVariable(envVariables, INSECURE_AUTHORIZATION_MODE_ENVIRONMENT_VARIABLE)
.map(AuthorizationMode::fromConfigValue)
.orElse(AuthorizationMode.defaultValue());
}
public static CapabilityMode getCapabilityMode() {
return getEnvironmentVariable(System.getenv(), CAPABILITIES_ENV_VAR)
.map(CapabilityMode::fromConfigValue)
.orElse(CapabilityMode.defaultValue());
}
public static Optional<Path> getConfigFile() {
return getConfigFile(System.getenv());
}
public static Optional<Path> getConfigFile(Map<String, String> envVariables) {
return getEnvironmentVariable(envVariables, CONFIG_FILE_ENVIRONMENT_VARIABLE).map(Paths::get);
}
public static Optional<TransportSecurityOptions> getOptions() {
return getOptions(System.getenv());
}
public static Optional<TransportSecurityOptions> getOptions(Map<String, String> envVariables) {
return getConfigFile(envVariables)
.map(TransportSecurityOptions::fromJsonFile);
}
/**
* @return The shared {@link TlsContext} for the Vespa system environment
*/
public static Optional<TlsContext> getSystemTlsContext() {
synchronized (TransportSecurityUtils.class) {
Path configFile = getConfigFile().orElse(null);
if (configFile == null) return Optional.empty();
if (systemTlsContext == null) {
systemTlsContext = new SystemTlsContext(configFile);
}
return Optional.of(systemTlsContext);
}
}
/**
* @return {@link ConnectionAuthContext} instance if {@link SSLEngine} was constructed by a {@link TlsContext}.
* Only available after TLS handshake is completed.
*/
public static Optional<ConnectionAuthContext> getConnectionAuthContext(SSLSession s) {
return Optional.ofNullable((ConnectionAuthContext) s.getValue(PeerAuthorizerTrustManager.AUTH_CONTEXT_PROPERTY));
}
/** @see #getConnectionAuthContext(SSLSession) */
public static Optional<ConnectionAuthContext> getConnectionAuthContext(SSLEngine e) {
return getConnectionAuthContext(e.getSession());
}
/** @see #getConnectionAuthContext(SSLSession) */
public static Optional<ConnectionAuthContext> getConnectionAuthContext(SSLSocket s) {
return getConnectionAuthContext(s.getSession());
}
private static Optional<String> getEnvironmentVariable(Map<String, String> environmentVariables, String variableName) {
return Optional.ofNullable(environmentVariables.get(variableName))
.filter(var -> !var.isEmpty());
}
private static class SystemTlsContext extends ConfigFileBasedTlsContext {
SystemTlsContext(Path tlsOptionsConfigFile) {
super(tlsOptionsConfigFile, getInsecureAuthorizationMode());
}
@Override public void close() {}
}
}
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