Apache Camel: Camel Configuration Utilities

JSSE Utility

The JSSE Utility, available as of 2.8, allows you to easily configure aspects of the Java Secure Socket Extension (JSSE) API in order to greatly simplify the use of custom transport layer security (TLS) settings on Camel components.

Supported Components

The following Camel components directly support the use of this configuration utility:

The following Camel components indirectly support the use of this configuration utility:

Configuration

The key component in configuring TLS through the JSSE API is the SSLContext. The SSLContext provides socket factories for both client-side and server-side sockets as well as another component called an SSLEngine that is used by non-blocking IO to support TLS. The JSSE configuration utility provides an easy to use builder for configuring these JSSE components, among others, in a manner that allows you to provide all configuration options up front during the initialization of your application such that you don't have to customize library code or dig though the inner workings of a third-party library in order to inject hooks for the configuration of each component in the JSSE API. The central builder in the JSSE configuration utility is the SSLContextParameters. This class serves as the entry point for most configuration in the JSSE utility.

All non-native classes are in the org.apache.camel.util.jsse package. All non-W3C schema defined types are in the http://camel.apache.org/schema/spring or http://camel.apache.org/schema/blueprint namespaces for Spring and Blueprint based configuration, respectively.

SSLContextParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
cipherSuites - CipherSuitesParameters	sslContextParameters/ciphersuites - CipherSuitesParameters	This optional property represents a collection of explicitly named cipher suites to enable on both the client and server side as well as in the SSLEngine. These values take precedence over filters supplied in cipherSuitesFilter. The utility attempts to enable the listed cipher suites regardless of whether or not the JSSE provider actually supports them or not. This behavior guarantees that listed cipher suites are always enabled when listed. For a more lenient option, use cipherSuitesFilter.
cipherSuitesFilter - FilterParameters	sslContextParameters/cipherSuitesFilter - FilterParameters	This optional property represents a collection of include and exclude patterns for cipher suites to enable on both the client and server side as well as in the SSLEngine. The patterns are applied over only the available cipher suites. The exclude patterns have precedence over the include patterns. If no cipherSuites and no cipherSuitesFilter are present, the default patterns applied are: Includes `.` Excludes `._NULL_.` `._anon_.` `._DES_.` Camel 2.15.4* `._EXPORT_.` Camel 2.15.4
secureSocketProtocols - SecureSocketProtocolsParameters	sslContextParameters/secureSocketProtocols - SecureSocketProtocolsParameters	This optional property represents a collection of explicitly named secure socket protocols, such as SSLv3/TLS/etc., to enable on both the client and server side as well as in the SSLEngine. These values take precedence over filters supplied in secureSocketProtocolsFilter. The utility attempts to enable the listed protocols regardless of whether or not the JSSE provider actually supports them or not. This behavior guarantees that listed protocols are always enabled when listed. For a more lenient option, use secureSocketProtocolsFilter.
secureSocketProtocolsFilter - FilterParameters	sslContextParameters/secureSocketProtocolsFilter - FilterParameters	This optional property represents a collection of include and exclude patterns for secure socket protocols to enable on both the client and server side as well as in the SSLEngine. The patterns are applied over only the available protocols. The exclude patterns have precedence over the include patterns. If no secureSocketProtocols and no secureSocketProtocolsFilter are present, the default patterns applied are: Includes `.*`
sessionTimeout - java.lang.String	sslContextParameters/@sessionTimeout - xsd:string	This optional property defines the timeout period, in seconds, for sessions on both the client and server side as well as in the SSLEngine.
keyManagers - KeyManagersParameters	sslContextParameters/keyManagers - KeyManagersParameters	This optional property configures the source of key material for providing identity of client and server side connections as well as in the SSLEngine. If omitted, no source of key material is provided and the SSLContext is suitable only for client-side usage when mutual authentication is not in use. You typically configure this property with a key store containing a client or server private key.
trustManagers - TrustManagersParameters	sslContextParameters/trustManagers - TrustManagersParameters	This optional property configures the source of material for verifying trust of key material used in the handshake process. If omitted, the default trust manager is automatically used. See the JSSE documentation for more information on how the default trust manager is configured. You typically configure this property with a key store containing trusted CA certificates.
secureRandom - SecureRandomParameters	sslContextParameters/secureRandom - SecureRandomParameters	This optional property configures the secure random number generator used by the client and server side as well as in the SSLEngine. If omitted, the default secure random number generator is used.
clientParameters - SSLContextClientParameters	sslContextParameters/clientParameters - SSLContextClientParameters	This optional property configures additional settings that apply only to the client side aspects of the SSLContext. If present, these settings override the settings specified at the SSLContextParameters level.
serverParameters - SSLContextServerParameters	sslContextParameters/serverParameters - SSLContextServerParameters	This optional property configures additional settings that apply only to the server side aspects of the SSLContext. If present, these settings override the settings specified at the SSLContextParameters level.
provider - java.lang.String	sslContextParameters/@provider - xsd:string	The optional provider identifier for the JSSE implementation to use when constructing the SSLContext. If omitted, the standard provider look-up mechanism is used to resolve the provider.
secureSocketProtocol - java.lang.String	sslContextParameters/@secureSocketProtocol - xsd:string	The optional secure socket protocol. See Appendix A in the Java Secure Socket Extension Reference Guide for information about standard protocol names. If omitted, TLS is used by default. Note that this property is related to but distinctly different from the secureSocketProtocols and secureSocketProtocolsFilter properties.
certAlias - java.lang.String	sslContextParameters/@certAlias - xsd:string	Camel 2.13: An optional certificate alias to use. This is useful when the keystore has multiple certificates.

KeyManagersParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
keyStore- KeyStoreParameters	keyStore - KeyStoreParameters	This optional property represents the key store that provides key material to the key manager. This is typically configured with a key store containing a user or server private key. In some cases, such as when using PKCS#11, the key store is omitted entirely.
keyPassword - java.lang.String	@keyPassword - xsd:string	The optional password for recovering/accessing the private key in the key store. This is typically the password for the private key in the configured key store; however, in some cases, such as when using PKCS#11, the key password may be provided through other means and is omitted entirely in this configuration.
provider - java.lang.String	@provider - xsd:string	The optional provider identifier for the KeyManagerFactory used to create the KeyManagers represented by this object's configuration. If omitted, the default look-up behavior is used.
algorithm - java.lang.String	@algorithm - xsd:string	The optional algorithm name for the KeyManagerFactory used to create the KeyManager represented by this object's configuration. See the Java Secure Socket Extension Reference Guide for information about standard algorithm names.
trustManager - java.lang.String	@trustManager - xsd:string	Camel 2.17:To use a existing configured trust manager instead of using TrustManagerFactory to get the TrustManager.

TrustManagersParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
keyStore- KeyStoreParameters	keyStore - KeyStoreParameters	This optional property represents the key store that provides key material to the trust manager. This is typically configured with a key store containing trusted CA certificates / public keys. In some cases, such as when using PKCS#11, the key store is omitted entirely.
provider - java.lang.String	@provider - xsd:string	The optional provider identifier for the TrustManagerFactory used to create the TrustManagers represented by this object's configuration. If omitted, the default look-up behavior is used.
algorithm - java.lang.String	@algorithm - xsd:string	The optional algorithm name for the TrustManagerFactory used to create the TrustManager represented by this object's configuration. See the Java Secure Socket Extension Reference Guide for information about standard algorithm names.

KeyStoreParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
resource- java.lang.String	keyStore/@resource - xsd:string	This optional property represents the location of the key store resource to load the key store from. In some cases, the resource is omitted as the key store content is provided by other means. The loading of the resource, if provided, is attempted by treating the resource as a file path, a class path resource, and a URL in that order. An exception is thrown if the resource cannot be resolved to readable input stream using any of the above methods. OSGi Usage For programmatic and Spring based XML configuration in OSGi, a resource specified as a classpath resource path may be accessible in the bundle containing the XML configuration file or in a package that is imported by that bundle. As Blueprint does not define the thread context classloader behavior, only classpath resources in the bundle containing the XML configuration file may be resolved from a Blueprint based XML configuration.
password - java.lang.String	keyStore/@password - xsd:string	The optional password for reading/opening/verifying the key store.
type - java.lang.String	keyStore/@type - xsd:string	The optional type of the key store. See Appendix A in the Java Cryptography Architecture Standard Algorithm Name Documentation for more information on standard names. If omitted, defaults to the default lookup mechanism as defined by KeyStore.getDefaultType().
provider - java.lang.String	keyStore/@provider - xsd:string	The optional provider identifier for the provider used to create the KeyStores represented by this object's configuration. If omitted, the default look-up behavior is used.

FilterParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
include - java.util.List<java.lang.String>	include - xsd:string	This optional property represents zero or more regular expression patterns for which matching values should be included. The list of excludes takes precedence over the include patterns.
exclude - java.util.List<java.lang.String>	exclude - xsd:string	This optional property represents zero or more regular expression patterns for which matching values should be included. The list of excludes takes precedence over the include patterns.

SecureRandomParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
algorithm - java.lang.String	@algorithm - xsd:string	This optionap property represents the Random Number Generator (RNG) algorithm identifier for the SecureRandom factory method used to create the SecureRandom represented by this object's configuration. See Appendix A in the Java Cryptography Architecture API Specification & Reference for information about standard RNG algorithm names.
provider - java.lang.String	@provider - xsd:string	The optional provider identifier for the SecureRandom factory method used to create the SecureRandom represented by this object's configuration. If omitted, the default look-up behavior is used.

SSLContextServerParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
cipherSuites - CipherSuitesParameters	sslContextClientParameters/ciphersuites - CipherSuitesParameters	This optional property represents a collection of explicitly named cipher suites to enable on the server side only (SSLServerSocketFactory/SSLServerSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. These values take precedence over filters supplied in cipherSuitesFilter. The utility attempts to enable the listed cipher suites regardless of whether or not the JSSE provider actually supports them or not. This behavior guarantees that listed cipher suites are always enabled when listed. For a more lenient option, use cipherSuitesFilter.
cipherSuitesFilter - FilterParameters	sslContextClientParameters/cipherSuitesFilter - FilterParameters	This optional property represents a collection of include and exclude patterns for cipher suites to enable on the server side only (SSLServerSocketFactory/SSLServerSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. The patterns are applied over only the available cipher suites. The exclude patterns have precedence over the include patterns. See SSLContextParameters for details of the behavior if this option and cipherSuites is omitted at this level.
secureSocketProtocols - SecureSocketProtocolsParameters	sslContextClientParameters/secureSocketProtocols - SecureSocketProtocolsParameters	This optional property represents a collection of explicitly named secure socket protocols, such as SSLv3/TLS/etc., to enable on the server side only (SSLServerSocketFactory/SSLServerSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. These values take precedence over filters supplied in secureSocketProtocolsFilter. The utility attempts to enable the listed protocols regardless of whether or not the JSSE provider actually supports them or not. This behavior guarantees that listed protocols aree always enabled when listed. For a more lenient option, use secureSocketProtocolsFilter.
secureSocketProtocolsFilter - FilterParameters	sslContextClientParameters/secureSocketProtocolsFilter - FilterParameters	This optional property represents a collection of include and exclude patterns for secure socket protocols to enable on theserver side only (SSLServerSocketFactory/SSLServerSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. The patterns are applied over only the available protocols. The exclude patterns have precedence over the include patterns. See SSLContextParameters for details of the behavior if this option and/or secureSocketProtocols is omitted at this level.
sessionTimeout - java.lang.String	sslContextServerParameters/@sessionTimeout - xsd:string	This optional property defines the timeout period, in seconds, for sessions on the server side. This setting affects both the SSLServerSocketFactory/SSLServerSocket as well as the server side of the SSLEngine.
clientAuthentication - java.lang.String	sslContextServerParameters/@clientAuthentication - xsd:string	This optional property indicates if the server side does not request, requests, or requires clients to provide authentication credentials during the handshake process. This is commonly referred to as mutual authentication, two direction SSL/TLS, or two-legged SSL/TLS. Valid values are: NONE, WANT, REQUIRE

SSLContextClientParameters

Java Field Name and Class	XML Attribute/Element and Type	Description
cipherSuites - CipherSuitesParameters	sslContextClientParameters/ciphersuites - CipherSuitesParameters	This optional property represents a collection of explicitly named cipher suites to enable on theclient side only (SSLSocketFactory/SSLSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. These values take precedence over filters supplied in cipherSuitesFilter. The utility attempts to enable the listed cipher suites regardless of whether or not the JSSE provider actually supports them or not. This behavior guarantees that listed cipher suites are always enabled when listed. For a more lenient option, use cipherSuitesFilter.
cipherSuitesFilter - FilterParameters	sslContextClientParameters/cipherSuitesFilter - FilterParameters	This optional property represents a collection of include and exclude patterns for cipher suites to enable on the client side only (SSLSocketFactory/SSLSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. The patterns are applied over only the available cipher suites. The exclude patterns have precedence over the include patterns. See SSLContextParameters for details of the behavior if this option and cipherSuites is omitted at this level.
secureSocketProtocols - SecureSocketProtocolsParameters	sslContextClientParameters/secureSocketProtocols - SecureSocketProtocolsParameters	This optional property represents a collection of explicitly named secure socket protocols, such as SSLv3/TLS/etc., to enable on the client side only (SSLSocketFactory/SSLSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. These values take precedence over filters supplied in secureSocketProtocolsFilter. The utility attempts to enable the listed protocols regardless of whether or not the JSSE provider actually supports them or not. This behavior guarantees that listed protocols aree always enabled when listed. For a more lenient option, use secureSocketProtocolsFilter.
secureSocketProtocolsFilter - FilterParameters	sslContextClientParameters/secureSocketProtocolsFilter - FilterParameters	This optional property represents a collection of include and exclude patterns for secure socket protocols to enable on the client side only (SSLSocketFactory/SSLSocket) by overriding the value of this setting in the SSLContextParameters. This option has no affect on the SSLEngine configuration. The patterns are applied over only the available protocols. The exclude patterns have precedence over the include patterns. See SSLContextParameters for details of the behavior if this option and/or secureSocketProtocols is omitted at this level.
sessionTimeout - java.lang.String	sslContextServerParameters/@sessionTimeout - xsd:string	This optional property defines the timeout period, in seconds, for sessions on the client side This setting affects both the SSLSocketFactory/SSLSocket as well as the client side of the SSLEngine.
sniHostNames	sslContextClientParameters/sniHostNames	Since 2.18.0. You can use this optional property to set multiple sniHostName (xsd:string) elements to set the SNIHostNames to be used when communicating over TLS. For more information see https://en.wikipedia.org/wiki/Server_Name_Indication

Examples

Programmatic Usage

Setting Client Authentication On the Server Side

This configuration sets the server side aspects of the TLS configuration to require client authentication during the handshake process. This configuration uses the default trust store and a custom key store to provide key material for both the server and client sides of the SSLContext.

KeyStoreParameters ksp = new KeyStoreParameters();
ksp.setResource("/users/home/server/keystore.jks");
ksp.setPassword("keystorePassword");

KeyManagersParameters kmp = new KeyManagersParameters();
kmp.setKeyStore(ksp);
kmp.setKeyPassword("keyPassword");

SSLContextServerParameters scsp = new SSLContextServerParameters();
scsp.setClientAuthentication(ClientAuthentication.REQUIRE);
SSLContextParameters scp = new SSLContextParameters();
scp.setServerParameters(scsp);
scp.setKeyManagers(kmp);

SSLContext context = scp.createSSLContext();
SSLEngine engine = scp.createSSLEngine();

Configuring Different Options on the Client and Server Side

In this example, both the client and server sides share the same custom key store; however, the client side allows any supported cipher suite while the server side will use the default cipher suite filter and exclude any cipher suites that match the patterns .*NULL.* and .*anon.*.

KeyStoreParameters ksp = new KeyStoreParameters();
ksp.setResource("/users/home/server/keystore.jks");
ksp.setPassword("keystorePassword");

KeyManagersParameters kmp = new KeyManagersParameters();
kmp.setKeyStore(ksp);
kmp.setKeyPassword("keyPassword");

FilterParameters filter = new FilterParameters();
filter.getInclude().add(".*");

SSLContextClientParameters sccp = new SSLContextClientParameters();
sccp.setCipherSuitesFilter(filter);

SSLContextParameters scp = new SSLContextParameters();
scp.setClientParameters(sccp);
scp.setKeyManagers(kmp);

SSLContext context = scp.createSSLContext();
SSLEngine engine = scp.createSSLEngine();

Using Camel Property Placeholders

This configuration utility fully supports the use of property placeholders (see Using PropertyPlaceholder) in all configuration fields. In order to support this feature, the configuration utility objects must be configured with a reference to a Camel context. All of the utility classes except for CipherSuitesParameters and SecureSocketProtocolsParameters provide a setter method for providing the context reference. Do not confuse the lack of a setter on CipherSuitesParameters and SecureSocketProtocolsParameters as an indication that you cannot use property placeholders when configuring these classes. The lack of a setter is an internal implementation detail and full placeholder support is available for both of the configuration classes.

The following example code demonstrates how to create a KeyStore instance based on configuration options provided by the Camel Properties Component and property placeholder support.

PropertiesComponent pc = new PropertiesComponent();
pc.setLocation("file:./jsse-test.properties");

CamelContext context = new DefaultCamelContext();
context.addComponent("properties", pc);

KeyStoreParameters ksp = new KeyStoreParameters();
ksp.setContext(camelContext);
ksp.setType("{{keyStoreParameters.type}}");
ksp.setProvider("{{keyStoreParameters.provider}}");
ksp.setResource("{{keyStoreParameters.resource}}");
ksp.setPassword("{{keyStoreParamerers.password}}");

KeyStore keyStore = ksp.createKeyStore();

XML Configuration

Note that XML configuration is supported in both Spring and Blueprint format.

Setting Client Authentication On the Server Side

This configuration sets the server side aspects of the TLS configuration to require client authentication during the handshake process. This configuration uses the default trust store and a custom key store to provide key material for both the server and client sides of the SSLContext.

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:camel="http://camel.apache.org/schema/spring"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">

  <camel:sslContextParameters
      id="mySslContext">

    <camel:keyManagers
        keyPassword="keyPassword">
      <camel:keyStore
          resource="/users/home/server/keystore.jks"
          password="keystorePassword"/>
    </camel:keyManagers>

    <camel:serverParameters
        clientAuthentication="WANT"/>

  </camel:sslContextParameters>

</beans>

Configuring Different Options on the Client and Server Side

In this example, both the client and server sides share the same custom key store; however, the client side allows any supported cipher suite while the server side will use the default cipher suite filter and exclude any cipher suites that match the patterns .*NULL.* and .*anon.*.

<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">
       xmlns:camel="http://camel.apache.org/schema/blueprint">

  <camel:sslContextParameters
      id="mySslContext">

    <camel:keyManagers
        keyPassword="keyPassword">
      <camel:keyStore
          resource="/users/home/server/keystore.jks"
          password="keystorePassword"/>
    </camel:keyManagers>

    <camel:clientParameters>
      <camel:cipherSuitesFilter>
        <camel:include>.*</camel:include>
      </camel:cipherSuitesFilter>
    </camel:clientParameters>

  </camel:sslContextParameters>

</blueprint>

Using Camel Property Placeholders

This configuration utility fully supports the use of property placeholders (see Using PropertyPlaceholder) in all configuration fields for XML based configuration as well. In order to support this feature, the configuration utility objects must be configured with a reference to a Camel context. The Spring and Blueprint namespace handlers will automatically inject the reference to the context for you when there is one Camel context in scope. If you have more than one Camel context instance in your XML defined context, you can indicate which context reference to configure by specifying the camelContextId attribute in the top-level XML element.

The following example code demonstrates how to create a KeyStore instance based on configuration options provided by the Camel Properties Component and property placeholder support. The Camel context with the ID example is used to resolve the property placeholders.

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:camel="http://camel.apache.org/schema/spring"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">

  <camel:camelContext id="example"/>

  <camel:camelContext id="example2"/>

  <camel:keyStoreParameters
    id="ksp"
    camelContextId="example"
    resource="{{keyStoreParameters.resource}}"
    type="{{keyStoreParameters.type}}"
    provider="{{keyStoreParameters.provider}}"
    password="{{keyStoreParamerers.password}}"/>

</beans>

JSSE Utility

Supported Components

Configuration

SSLContextParameters

KeyManagersParameters

TrustManagersParameters

KeyStoreParameters

FilterParameters

SecureRandomParameters

SSLContextServerParameters

SSLContextClientParameters

Examples

Programmatic Usage

Setting Client Authentication On the Server Side

Configuring Different Options on the Client and Server Side

Using Camel Property Placeholders

XML Configuration

Setting Client Authentication On the Server Side

Configuring Different Options on the Client and Server Side

Using Camel Property Placeholders

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