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Tidying up incorrectly rendered program listing
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Luke Taylor
parent
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commit
f4954d0eda
@ -1,10 +1,8 @@
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<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="jaas"><info><title>Java Authentication and Authorization Service (JAAS)
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Provider</title></info>
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<section xml:id="jaas-overview"><info><title>Overview</title></info>
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<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="jaas">
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<info><title>Java Authentication and Authorization Service (JAAS) Provider</title></info>
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<section xml:id="jaas-overview">
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<info><title>Overview</title></info>
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<para>Spring Security provides a package able to delegate
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authentication requests to the Java Authentication and Authorization
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Service (JAAS). This package is discussed in detail below.</para>
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@ -16,9 +14,8 @@
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syntax in order to understand this section.</para>
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</section>
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<section xml:id="jaas-config"><info><title>Configuration</title></info>
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<section xml:id="jaas-config">
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<info><title>Configuration</title></info>
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<para>The <literal>JaasAuthenticationProvider</literal> attempts to
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authenticate a user’s principal and credentials through JAAS.</para>
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@ -36,34 +33,31 @@
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above JAAS login configuration file:</para>
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<para><programlisting>
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&lt;bean id="jaasAuthenticationProvider"
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class="org.springframework.security.providers.jaas.JaasAuthenticationProvider"&gt;
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&lt;property name="loginConfig"&gt;
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&lt;value&gt;/WEB-INF/login.conf&lt;/value&gt;
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&lt;/property&gt;
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&lt;property name="loginContextName"&gt;
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&lt;value&gt;JAASTest&lt;/value&gt;
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&lt;/property&gt;
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&lt;property name="callbackHandlers"&gt;
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&lt;list&gt;
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&lt;bean class="org.springframework.security.providers.jaas.JaasNameCallbackHandler"/&gt;
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&lt;bean class="org.springframework.security.providers.jaas.JaasPasswordCallbackHandler"/&gt;
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&lt;/list&gt;
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&lt;/property&gt;
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&lt;property name="authorityGranters"&gt;
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&lt;list&gt;
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&lt;bean class="org.springframework.security.providers.jaas.TestAuthorityGranter"/&gt;
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&lt;/list&gt;
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&lt;/property&gt;
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&lt;/bean&gt;
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<![CDATA[
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<bean id="jaasAuthenticationProvider"
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class="org.springframework.security.providers.jaas.JaasAuthenticationProvider">
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<property name="loginConfig" value="/WEB-INF/login.conf"/>
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<property name="loginContextName" value="JAASTest"/>
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<property name="callbackHandlers">
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<list>
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<bean class="org.springframework.security.providers.jaas.JaasNameCallbackHandler"/>
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<bean class="org.springframework.security.providers.jaas.JaasPasswordCallbackHandler"/>
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</list>
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</property>
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<property name="authorityGranters">
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<list>
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<bean class="org.springframework.security.providers.jaas.TestAuthorityGranter"/>
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</list>
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</property>
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</bean>
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]]>
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</programlisting></para>
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<para>The <literal>CallbackHandler</literal>s and
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<literal>AuthorityGranter</literal>s are discussed below.</para>
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<section xml:id="jaas-callbackhandler"><info><title xml:id="jaas-callback-handler">JAAS CallbackHandler</title></info>
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<section xml:id="jaas-callbackhandler">
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<info><title xml:id="jaas-callback-handler">JAAS CallbackHandler</title></info>
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<para>Most JAAS <literal>LoginModule</literal>s require a callback
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of some sort. These callbacks are usually used to obtain the
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@ -102,7 +96,8 @@
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being wrapped.</para>
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</section>
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<section xml:id="jaas-authoritygranter"><info><title xml:id="jaas-authority-granter">JAAS AuthorityGranter</title></info>
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<section xml:id="jaas-authoritygranter">
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<info><title xml:id="jaas-authority-granter">JAAS AuthorityGranter</title></info>
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<para>JAAS works with principals. Even "roles" are represented as
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@ -1,7 +1,11 @@
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<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="ldap"><info><title>LDAP Authentication</title></info>
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<section xml:id="ldap-overview"><info><title>Overview</title></info>
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<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="ldap">
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<info>
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<title>LDAP Authentication</title>
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</info>
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<section xml:id="ldap-overview">
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<info>
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<title>Overview</title>
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</info>
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<para>LDAP is often used by organizations as a central repository for user information and
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as an authentication service. It can also be used to store the role information for
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application users.</para>
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@ -11,143 +15,205 @@
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configured to handle a wide range of situations.</para>
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<para>You should be familiar with LDAP before trying to use it with Spring Security. The
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following link provides a good introduction to the concepts involved and a guide to
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setting up a directory using the free LDAP server OpenLDAP: <uri xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.zytrax.com/books/ldap/">http://www.zytrax.com/books/ldap/</uri>. Some familiarity with the JNDI APIs used
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to access LDAP from Java may also be useful. We don't use any third-party LDAP libraries
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setting up a directory using the free LDAP server OpenLDAP:
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<uri xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.zytrax.com/books/ldap/">http://www.zytrax.com/books/ldap/</uri>.
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Some familiarity with the JNDI APIs used to access LDAP from Java may also be useful. We don't use any third-party LDAP libraries
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(Mozilla, JLDAP etc.) in the LDAP provider, but extensive use is made of Spring LDAP, so
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some familiarity with that project may be useful if you plan on adding your own
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customizations.</para>
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</section>
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<section><info><title>Using LDAP with Spring Security</title></info>
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<para> LDAP authentication in Spring Security can be roughly divided into the following
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stages. <orderedlist inheritnum="ignore" continuation="restarts">
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<section>
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<info>
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<title>Using LDAP with Spring Security</title>
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</info>
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<para>
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LDAP authentication in Spring Security can be roughly divided into the following stages.
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<orderedlist inheritnum="ignore" continuation="restarts">
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<listitem>
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<para>Obtaining the unique LDAP <quote>Distinguished Name</quote>, or DN, from
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the login name. This will often mean performing a search in the directory,
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unless the exact mapping of usernames to DNs is known in advance.</para>
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<para>Obtaining the unique LDAP
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<quote>Distinguished Name</quote>, or DN, from the login name. This will
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often mean performing a search in the directory, unless the exact mapping of
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usernames to DNs is known in advance.</para>
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</listitem>
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<listitem>
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<para>Authenticating the user, either by binding as that user or by performing a
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remote <quote>compare</quote> operation of the user's password against the
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password attribute in the directory entry for the DN.</para>
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remote
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<quote>compare</quote>
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operation of the user's password against the password attribute in the
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directory entry for the DN.</para>
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</listitem>
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<listitem>
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<para>Loading the list of authorities for the user.</para>
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</listitem>
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</orderedlist> The exception is when the LDAP directory is just being used to retrieve
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user information and authenticate against it locally. This may not be possible as
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directories are often set up with limited read access for attributes such as user
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passwords. </para>
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<para> We will look at some configuration scenarios below. For full information on available
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</orderedlist>
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The exception is when the LDAP directory is just being used to retrieve user information
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and authenticate against it locally. This may not be possible as directories are often
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set up with limited read access for attributes such as user passwords.
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</para>
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<para>
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We will look at some configuration scenarios below. For full information on available
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configuration options, please consult the security namespace schema (information from
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which should be available in your XML editor). </para>
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which should be available in your XML editor).
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</para>
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</section>
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<section><info><title>Configuring an LDAP Server</title></info>
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<para> The first thing you need to do is configure the server against which authentication
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should take place. This is done using the <literal><ldap-server></literal> element
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from the security namespace. This can be configured to point at an external LDAP server,
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using the <literal>url</literal> attribute: <programlisting>
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<ldap-server url="ldap://springframework.org:389/dc=springframework,dc=org" />
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</programlisting></para>
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<section><info><title>Using an Embedded Test Server</title></info>
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<para> The <literal><ldap-server></literal> element can also be used to create an
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embedded server, which can be very useful for testing and demonstrations. In this
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case you use it without the <literal>url</literal> attribute: <programlisting>
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<ldap-server root="dc=springframework,dc=org"/>
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</programlisting> Here we've specified that the root DIT of the directory should be
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<quote>dc=springframework,dc=org</quote>, which is the default. Used this way,
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the namespace parser will create an embedded Apache Directory server and scan the
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<section>
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<info>
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<title>Configuring an LDAP Server</title>
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</info>
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<para>
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The first thing you need to do is configure the server against which authentication
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should take place. This is done using the
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<literal><ldap-server></literal>
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element from the security namespace. This can be configured to point at an external LDAP
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server, using the
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<literal>url</literal>
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attribute:
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<programlisting><![CDATA[
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<ldap-server url="ldap://springframework.org:389/dc=springframework,dc=org" />
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]]>
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</programlisting>
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</para>
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<section>
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<info>
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<title>Using an Embedded Test Server</title>
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</info>
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<para>
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The
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<literal><ldap-server></literal>
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element can also be used to create an embedded server, which can be very useful for
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testing and demonstrations. In this case you use it without the
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<literal>url</literal>
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attribute:
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<programlisting><![CDATA[
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<ldap-server root="dc=springframework,dc=org"/>
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]]>
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</programlisting>
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Here we've specified that the root DIT of the directory should be
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<quote>dc=springframework,dc=org</quote>, which is the default. Used this way, the
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namespace parser will create an embedded Apache Directory server and scan the
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classpath for any LDIF files, which it will attempt to load into the server. You can
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customize this behaviour using the <literal>ldif</literal> attribute, which defines
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an LDIF resource to be loaded: <programlisting>
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<ldap-server ldif="classpath:users.ldif" />
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</programlisting> This makes it a lot easier to get up and running with LDAP, since it can be
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customize this behaviour using the
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<literal>ldif</literal>
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attribute, which defines an LDIF resource to be loaded:
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<programlisting><![CDATA[
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<ldap-server ldif="classpath:users.ldif" />
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]]></programlisting>
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This makes it a lot easier to get up and running with LDAP, since it can be
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inconvenient to work all the time with an external server. It also insulates the
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user from the complex bean configuration needed to wire up an Apache Directory
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server. Using plain Spring Beans the configuration would be much more cluttered. You
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must have the necessary Apache Directory dependency jars available for your
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application to use. These can be obtained from the LDAP sample application. </para>
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application to use. These can be obtained from the LDAP sample application.
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</para>
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</section>
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<section><info><title>Using Bind Authentication</title></info>
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<para> This is the most common LDAP authentication scenario. <programlisting>
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<ldap-authentication-provider user-dn-pattern="uid={0},ou=people"/>
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</programlisting> This simple example would obtain the DN for the user by
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substituting the user login name in the supplied pattern and attempting to bind as
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that user with the login password. This is OK if all your users are stored under a
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single node in the directory. If instead you wished to configure an LDAP search
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filter to locate the user, you could use the following: <programlisting>
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<ldap-authentication-provider user-search-filter="(uid={0})" user-search-base="ou=people"/>
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</programlisting> If used with the server definition above, this would
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perform a search under the DN <literal>ou=people,dc=springframework,dc=org</literal>
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using the value of the <literal>user-search-filter</literal> attribute as a filter.
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Again the user login name is substituted for the parameter in the filter name. If
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<literal>user-search-base</literal> isn't supplied, the search will be performed
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from the root. </para>
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<section>
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<info>
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<title>Using Bind Authentication</title>
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</info>
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<para>
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This is the most common LDAP authentication scenario.
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<programlisting>
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<![CDATA[<ldap-authentication-provider user-dn-pattern="uid={0},ou=people"/>
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]]></programlisting>
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This simple example would obtain the DN for the user by substituting the user login
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name in the supplied pattern and attempting to bind as that user with the login
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password. This is OK if all your users are stored under a single node in the
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directory. If instead you wished to configure an LDAP search filter to locate the
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user, you could use the following:
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<programlisting><![CDATA[
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<ldap-authentication-provider user-search-filter="(uid={0})" user-search-base="ou=people"/>
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]]></programlisting>
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If used with the server definition above, this would perform a search under the DN
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<literal>ou=people,dc=springframework,dc=org</literal>
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using the value of the
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<literal>user-search-filter</literal>
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attribute as a filter. Again the user login name is substituted for the parameter in
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the filter name. If
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<literal>user-search-base</literal>
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isn't supplied, the search will be performed from the root.
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</para>
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</section>
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<section><info><title>Loading Authorities</title></info>
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<para> How authorities are loaded from groups in the LDAP directory is controlled by the
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following attributes. <itemizedlist>
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<section>
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<info>
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<title>Loading Authorities</title>
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</info>
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<para>
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How authorities are loaded from groups in the LDAP directory is controlled by the
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following attributes.
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<itemizedlist>
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<listitem>
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<para><literal>group-search-base</literal>. Defines the part of the
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directory tree under which group searches should be performed.</para>
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<para>
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<literal>group-search-base</literal>. Defines the part of the directory
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tree under which group searches should be performed.</para>
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</listitem>
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<listitem>
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<para><literal>group-role-attribute</literal>. The attribute which contains
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<para>
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<literal>group-role-attribute</literal>. The attribute which contains
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the name of the authority defined by the group entry. Defaults to
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<literal>cn</literal></para>
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<literal>cn</literal>
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</para>
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</listitem>
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<listitem>
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<para><literal>group-search-filter</literal>. The filter which is used to
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search for group membership. The default is <literal>uniqueMember={0}</literal>, corresponding to the <literal>groupOfUniqueMembers</literal> LDAP class. In this case, the
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substituted parameter is the full distinguished name of the user. The
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parameter <literal>{1}</literal> can be used if you want to filter on
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the login name.</para>
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<para>
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<literal>group-search-filter</literal>. The filter which is used to
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search for group membership. The default is
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<literal>uniqueMember={0}</literal>, corresponding to the
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<literal>groupOfUniqueMembers</literal>
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LDAP class. In this case, the substituted parameter is the full
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distinguished name of the user. The parameter
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<literal>{1}</literal>
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can be used if you want to filter on the login name.</para>
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</listitem>
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</itemizedlist> So if we used the following configuration <programlisting>
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<ldap-authentication-provider user-dn-pattern="uid={0},ou=people group-search-base="ou=groups" />
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</programlisting> and authenticated successfully as user <quote>ben</quote>,
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the subsequent loading of authorities would perform a search under the directory
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entry <literal>ou=groups,dc=springframework,dc=org</literal>, looking for entries
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which contain the attribute <literal>uniqueMember</literal> with value <literal>uid=ben,ou=people,dc=springframework,dc=org</literal>. For more information on
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loading authorities, see the Javadoc for the
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<classname>DefaultLdapAuthoritiesPopulator</classname> class. </para>
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</itemizedlist>
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So if we used the following configuration
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<programlisting><![CDATA[
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<ldap-authentication-provider user-dn-pattern="uid={0},ou=people group-search-base="ou=groups" />
|
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]]></programlisting>
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and authenticated successfully as user
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<quote>ben</quote>, the subsequent loading of authorities would perform a search
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under the directory entry
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<literal>ou=groups,dc=springframework,dc=org</literal>, looking for entries which
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contain the attribute
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<literal>uniqueMember</literal>
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with value
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<literal>uid=ben,ou=people,dc=springframework,dc=org</literal>. For more information
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on loading authorities, see the Javadoc for the
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<classname>DefaultLdapAuthoritiesPopulator</classname>
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class.
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</para>
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</section>
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</section>
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<section><info><title>Implementation Classes</title></info>
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<section>
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<info>
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<title>Implementation Classes</title>
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</info>
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<para>The namespace configuration options we've used above are simple to use and much more
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concise than using Spring beans explicitly. There are situations when you may need to
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know how to configure Spring Security LDAP directly in your application context. You may
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wish to customize the behaviour of some of the classes, for example. If you're happy using
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namespace configuration then you can skip this section and the next one.
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wish to customize the behaviour of some of the classes, for example. If you're happy
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using namespace configuration then you can skip this section and the next one.
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</para>
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<para>
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The main LDAP
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provider class is
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<classname>org.springframework.security.providers.ldap.LdapAuthenticationProvider</classname>.
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The main LDAP provider class is
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<classname>org.springframework.security.providers.ldap.LdapAuthenticationProvider</classname>.
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This bean doesn't actually do much itself but delegates the work to two other beans, an
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<interfacename>LdapAuthenticator</interfacename> and an
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<interfacename>LdapAuthoritiesPopulator</interfacename> which are responsible for
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authenticating the user and retrieving the user's set of
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<interfacename>LdapAuthenticator</interfacename>
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and an
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<interfacename>LdapAuthoritiesPopulator</interfacename>
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which are responsible for authenticating the user and retrieving the user's set of
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<interfacename>GrantedAuthority</interfacename>s respectively.</para>
|
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<section xml:id="ldap-ldap-authenticators"><info><title>LdapAuthenticator Implementations</title></info>
|
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<section xml:id="ldap-ldap-authenticators">
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<info>
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<title>LdapAuthenticator Implementations</title>
|
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</info>
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<para>The authenticator is also responsible for retrieving any required user attributes.
|
||||
This is because the permissions on the attributes may depend on the type of
|
||||
authentication being used. For example, if binding as the user, it may be necessary
|
||||
to read them with the user's own permissions.</para>
|
||||
<para>There are currently two authentication strategies supplied with Spring Security: <itemizedlist>
|
||||
<para>There are currently two authentication strategies supplied with Spring Security:
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>Authentication directly to the LDAP server ("bind"
|
||||
authentication).</para>
|
||||
<para>Authentication directly to the LDAP server ("bind" authentication).</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Password comparison, where the password supplied by the user is
|
||||
@ -157,127 +223,167 @@
|
||||
password is passed to the server for comparison and the real password
|
||||
value is never retrieved.</para>
|
||||
</listitem>
|
||||
</itemizedlist></para>
|
||||
<section xml:id="ldap-ldap-authenticators-common"><info><title>Common Functionality</title></info>
|
||||
|
||||
</itemizedlist>
|
||||
</para>
|
||||
<section xml:id="ldap-ldap-authenticators-common">
|
||||
<info>
|
||||
<title>Common Functionality</title>
|
||||
</info>
|
||||
<para>Before it is possible to authenticate a user (by either strategy), the
|
||||
distinguished name (DN) has to be obtained from the login name supplied to the
|
||||
application. This can be done either by simple pattern-matching (by setting the
|
||||
<property>setUserDnPatterns</property> array property) or by setting the
|
||||
<property>userSearch</property> property. For the DN pattern-matching
|
||||
approach, a standard Java pattern format is used, and the login name will be
|
||||
substituted for the parameter <parameter>{0}</parameter>. The pattern should be
|
||||
relative to the DN that the configured
|
||||
<interfacename>InitialDirContextFactory</interfacename> will bind to (see the
|
||||
section on <link linkend="ldap-context-source">connecting to the LDAP
|
||||
server</link> for more information on this). For example, if you are using an
|
||||
LDAP server with the URL <literal>ldap://monkeymachine.co.uk/dc=springframework,dc=org</literal>, and have a
|
||||
pattern <literal>uid={0},ou=greatapes</literal>, then a login name of "gorilla"
|
||||
will map to a DN <literal>uid=gorilla,ou=greatapes,dc=springframework,dc=org</literal>. Each configured
|
||||
DN pattern will be tried in turn until a match is found. For information on
|
||||
using a search, see the section on <link linkend="ldap-searchobjects">search
|
||||
objects</link> below. A combination of the two approaches can also be used -
|
||||
the patterns will be checked first and if no matching DN is found, the search
|
||||
will be used.</para>
|
||||
<property>setUserDnPatterns</property>
|
||||
array property) or by setting the
|
||||
<property>userSearch</property>
|
||||
property. For the DN pattern-matching approach, a standard Java pattern format
|
||||
is used, and the login name will be substituted for the parameter
|
||||
<parameter>{0}</parameter>. The pattern should be relative to the DN that the
|
||||
configured
|
||||
<interfacename>InitialDirContextFactory</interfacename>
|
||||
will bind to (see the section on
|
||||
<link linkend="ldap-context-source">connecting to the LDAP server</link>
|
||||
for more information on this). For example, if you are using an LDAP server with
|
||||
the URL
|
||||
<literal>ldap://monkeymachine.co.uk/dc=springframework,dc=org</literal>, and
|
||||
have a pattern
|
||||
<literal>uid={0},ou=greatapes</literal>, then a login name of "gorilla" will map
|
||||
to a DN
|
||||
<literal>uid=gorilla,ou=greatapes,dc=springframework,dc=org</literal>. Each
|
||||
configured DN pattern will be tried in turn until a match is found. For
|
||||
information on using a search, see the section on
|
||||
<link linkend="ldap-searchobjects">search objects</link>
|
||||
below. A combination of the two approaches can also be used - the patterns will
|
||||
be checked first and if no matching DN is found, the search will be used.</para>
|
||||
</section>
|
||||
<section xml:id="ldap-ldap-authenticators-bind"><info><title>BindAuthenticator</title></info>
|
||||
|
||||
<section xml:id="ldap-ldap-authenticators-bind">
|
||||
<info>
|
||||
<title>BindAuthenticator</title>
|
||||
</info>
|
||||
<para>The class
|
||||
<classname>org.springframework.security.providers.ldap.authenticator.BindAuthenticator</classname>
|
||||
<classname>org.springframework.security.providers.ldap.authenticator.BindAuthenticator</classname>
|
||||
implements the bind authentication strategy. It simply attempts to bind as the
|
||||
user.</para>
|
||||
</section>
|
||||
<section xml:id="ldap-ldap-authenticators-password"><info><title>PasswordComparisonAuthenticator</title></info>
|
||||
|
||||
<section xml:id="ldap-ldap-authenticators-password">
|
||||
<info>
|
||||
<title>PasswordComparisonAuthenticator</title>
|
||||
</info>
|
||||
<para>The class
|
||||
<classname>org.springframework.security.providers.ldap.authenticator.PasswordComparisonAuthenticator</classname>
|
||||
<classname>org.springframework.security.providers.ldap.authenticator.PasswordComparisonAuthenticator</classname>
|
||||
implements the password comparison authentication strategy.</para>
|
||||
</section>
|
||||
<section xml:id="ldap-ldap-authenticators-active-directory"><info><title>Active Directory Authentication</title></info>
|
||||
|
||||
<section xml:id="ldap-ldap-authenticators-active-directory">
|
||||
<info>
|
||||
<title>Active Directory Authentication</title>
|
||||
</info>
|
||||
<para>In addition to standard LDAP authentication (binding with a DN), Active
|
||||
Directory has its own non-standard syntax for user authentication.</para>
|
||||
</section>
|
||||
</section>
|
||||
<section xml:id="ldap-context-source"><info><title>Connecting to the LDAP Server</title></info>
|
||||
|
||||
<section xml:id="ldap-context-source">
|
||||
<info>
|
||||
<title>Connecting to the LDAP Server</title>
|
||||
</info>
|
||||
<para>The beans discussed above have to be able to connect to the server. They both have
|
||||
to be supplied with a <interfacename>SpringSecurityContextSource</interfacename>
|
||||
which is an extension of Spring LDAP's <interfacename>ContextSource</interfacename>.
|
||||
Unless you have special requirements, you will usually
|
||||
configure a <classname>DefaultSpringSecurityContextSource</classname> bean, which can be
|
||||
configured with the URL of your LDAP server and optionally with the username and
|
||||
password of a "manager" user which will be used by default when binding to the
|
||||
server (instead of binding anonymously). For more information read the Javadoc for
|
||||
this class and for Spring LDAP's <classname>AbstractContextSource</classname>.
|
||||
to be supplied with a
|
||||
<interfacename>SpringSecurityContextSource</interfacename>
|
||||
which is an extension of Spring LDAP's
|
||||
<interfacename>ContextSource</interfacename>. Unless you have special requirements,
|
||||
you will usually configure a
|
||||
<classname>DefaultSpringSecurityContextSource</classname>
|
||||
bean, which can be configured with the URL of your LDAP server and optionally with
|
||||
the username and password of a "manager" user which will be used by default when
|
||||
binding to the server (instead of binding anonymously). For more information read
|
||||
the Javadoc for this class and for Spring LDAP's
|
||||
<classname>AbstractContextSource</classname>.
|
||||
</para>
|
||||
</section>
|
||||
<section xml:id="ldap-searchobjects"><info><title>LDAP Search Objects</title></info>
|
||||
|
||||
<section xml:id="ldap-searchobjects">
|
||||
<info>
|
||||
<title>LDAP Search Objects</title>
|
||||
</info>
|
||||
<para>Often more a more complicated strategy than simple DN-matching is required to
|
||||
locate a user entry in the directory. This can be encapsulated in an
|
||||
<interfacename>LdapUserSearch</interfacename> instance which can be supplied to
|
||||
the authenticator implementations, for example, to allow them to locate a user. The
|
||||
supplied implementation is <classname>FilterBasedLdapUserSearch</classname>.</para>
|
||||
<section xml:id="ldap-searchobjects-filter"><info><title xml:id="ldap-searchobjects-filter-based"><classname>FilterBasedLdapUserSearch</classname></title></info>
|
||||
|
||||
<interfacename>LdapUserSearch</interfacename>
|
||||
instance which can be supplied to the authenticator implementations, for example, to
|
||||
allow them to locate a user. The supplied implementation is
|
||||
<classname>FilterBasedLdapUserSearch</classname>.</para>
|
||||
<section xml:id="ldap-searchobjects-filter">
|
||||
<info>
|
||||
<title xml:id="ldap-searchobjects-filter-based">
|
||||
<classname>FilterBasedLdapUserSearch</classname>
|
||||
</title>
|
||||
</info>
|
||||
<para>This bean uses an LDAP filter to match the user object in the directory. The
|
||||
process is explained in the Javadoc for the corresponding search method on the
|
||||
<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://java.sun.com/j2se/1.4.2/docs/api/javax/naming/directory/DirContext.html#search(javax.naming.Name,%20java.lang.String,%20java.lang.Object[],%20javax.naming.directory.SearchControls)">JDK DirContext class</link>. As explained there, the search filter can be
|
||||
supplied with parameters. For this class, the only valid parameter is <parameter>{0}</parameter> which will be replaced with the user's login name.</para>
|
||||
<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://java.sun.com/j2se/1.4.2/docs/api/javax/naming/directory/DirContext.html#search(javax.naming.Name,%20java.lang.String,%20java.lang.Object[],%20javax.naming.directory.SearchControls)">JDK
|
||||
DirContext class</link>.
|
||||
As explained there, the search filter can be supplied with parameters. For this class, the only valid parameter is
|
||||
<parameter>{0}</parameter>
|
||||
which will be replaced with the user's login name.</para>
|
||||
</section>
|
||||
</section>
|
||||
<section xml:id="ldap-bean-config"><info><title>Spring Bean Configuration</title></info>
|
||||
|
||||
<section xml:id="ldap-bean-config">
|
||||
<info>
|
||||
<title>Spring Bean Configuration</title>
|
||||
</info>
|
||||
<para>A typical configuration, using some of the beans we've discussed here, might look
|
||||
like this: <programlisting>
|
||||
|
||||
<bean id="contextSource"
|
||||
class="org.springframework.security.ldap.DefaultSpringSecurityContextSource">
|
||||
<constructor-arg value="ldap://monkeymachine:389/dc=springframework,dc=org"/>
|
||||
<property name="userDn" value="cn=manager,dc=springframework,dc=org"/>
|
||||
<property name="password" value="password"/>
|
||||
</bean>
|
||||
like this:
|
||||
<programlisting>
|
||||
<![CDATA[
|
||||
<bean id="contextSource"
|
||||
class="org.springframework.security.ldap.DefaultSpringSecurityContextSource">
|
||||
<constructor-arg value="ldap://monkeymachine:389/dc=springframework,dc=org"/>
|
||||
<property name="userDn" value="cn=manager,dc=springframework,dc=org"/>
|
||||
<property name="password" value="password"/>
|
||||
</bean>
|
||||
|
||||
<bean id="ldapAuthProvider"
|
||||
class="org.springframework.security.providers.ldap.LdapAuthenticationProvider">
|
||||
<constructor-arg>
|
||||
<bean class="org.springframework.security.providers.ldap.authenticator.BindAuthenticator">
|
||||
<constructor-arg ref="contextSource"/>
|
||||
<property name="userDnPatterns"><list><value>uid={0},ou=people</value></list></property>
|
||||
</bean>
|
||||
</constructor-arg>
|
||||
<constructor-arg>
|
||||
<bean class="org.springframework.security.ldap.populator.DefaultLdapAuthoritiesPopulator">
|
||||
<constructor-arg ref="contextSource"/>
|
||||
<constructor-arg value="ou=groups"/>
|
||||
<property name="groupRoleAttribute" value="ou"/>
|
||||
</bean>
|
||||
</constructor-arg>
|
||||
</bean>
|
||||
|
||||
</programlisting> This would set up the provider to access an LDAP server with URL
|
||||
<bean id="ldapAuthProvider"
|
||||
class="org.springframework.security.providers.ldap.LdapAuthenticationProvider">
|
||||
<constructor-arg>
|
||||
<bean class="org.springframework.security.providers.ldap.authenticator.BindAuthenticator">
|
||||
<constructor-arg ref="contextSource"/>
|
||||
<property name="userDnPatterns"><list><value>uid={0},ou=people</value></list></property>
|
||||
</bean>
|
||||
</constructor-arg>
|
||||
<constructor-arg>
|
||||
<bean class="org.springframework.security.ldap.populator.DefaultLdapAuthoritiesPopulator">
|
||||
<constructor-arg ref="contextSource"/>
|
||||
<constructor-arg value="ou=groups"/>
|
||||
<property name="groupRoleAttribute" value="ou"/>
|
||||
</bean>
|
||||
</constructor-arg>
|
||||
</bean>]]>
|
||||
</programlisting>
|
||||
This would set up the provider to access an LDAP server with URL
|
||||
<literal>ldap://monkeymachine:389/dc=springframework,dc=org</literal>.
|
||||
Authentication will be performed by attempting to bind with the DN <literal>uid=<user-login-name>,ou=people,dc=springframework,dc=org</literal>. After
|
||||
successful authentication, roles will be assigned to the user by searching under the DN
|
||||
<literal>ou=groups,dc=springframework,dc=org</literal> with the default filter
|
||||
Authentication will be performed by attempting to bind with the DN
|
||||
<literal>uid=<user-login-name>,ou=people,dc=springframework,dc=org</literal>.
|
||||
After successful authentication, roles will be assigned to the user by searching
|
||||
under the DN
|
||||
<literal>ou=groups,dc=springframework,dc=org</literal>
|
||||
with the default filter
|
||||
<literal>(member=<user's-DN>)</literal>. The role name will be taken from the
|
||||
<quote>ou</quote> attribute of each match.</para>
|
||||
<quote>ou</quote>
|
||||
attribute of each match.</para>
|
||||
<para>To configurae a user search object, which uses the filter
|
||||
<literal>(uid=<user-login-name>)</literal> for use instead of the
|
||||
DN-pattern (or in addition to it), you would configure the following bean
|
||||
<literal>(uid=<user-login-name>)</literal>
|
||||
for use instead of the DN-pattern (or in addition to it), you would configure the
|
||||
following bean
|
||||
<programlisting>
|
||||
<bean id="userSearch"
|
||||
class="org.springframework.security.ldap.search.FilterBasedLdapUserSearch">
|
||||
<constructor-arg index="0" value=""/>
|
||||
<constructor-arg index="1" value="(uid={0})"/>
|
||||
<constructor-arg index="2" ref="contextSource" />
|
||||
<property name="searchSubtree" value="true"/>
|
||||
</bean>
|
||||
</programlisting>
|
||||
and use it by setting the authenticator's <property>userSearch</property> property. The authenticator
|
||||
would then call the search object to obtain the correct user's DN before attempting to bind as this user.</para>
|
||||
<![CDATA[
|
||||
<bean id="userSearch"
|
||||
class="org.springframework.security.ldap.search.FilterBasedLdapUserSearch">
|
||||
<constructor-arg index="0" value=""/>
|
||||
<constructor-arg index="1" value="(uid={0})"/>
|
||||
<constructor-arg index="2" ref="contextSource" />
|
||||
<property name="searchSubtree" value="true"/>
|
||||
</bean> ]]>
|
||||
</programlisting>
|
||||
and use it by setting the authenticator's
|
||||
<property>userSearch</property>
|
||||
property. The authenticator would then call the search object to obtain the correct
|
||||
user's DN before attempting to bind as this user.</para>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
</chapter>
|
||||
Loading…
x
Reference in New Issue
Block a user