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docs/modules/ROOT/pages/servlet/appendix/namespace/authentication-manager.adoc
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[[nsa-authentication]] | ||
= Authentication Services | ||
Before Spring Security 3.0, an `AuthenticationManager` was automatically registered internally. | ||
Now you must register one explicitly using the `<authentication-manager>` element. | ||
This creates an instance of Spring Security's `ProviderManager` class, which needs to be configured with a list of one or more `AuthenticationProvider` instances. | ||
These can either be created using syntax elements provided by the namespace, or they can be standard bean definitions, marked for addition to the list using the `authentication-provider` element. | ||
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[[nsa-authentication-manager]] | ||
== <authentication-manager> | ||
Every Spring Security application which uses the namespace must have include this element somewhere. | ||
It is responsible for registering the `AuthenticationManager` which provides authentication services to the application. | ||
All elements which create `AuthenticationProvider` instances should be children of this element. | ||
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[[nsa-authentication-manager-attributes]] | ||
=== <authentication-manager> Attributes | ||
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[[nsa-authentication-manager-alias]] | ||
* **alias** | ||
This attribute allows you to define an alias name for the internal instance for use in your own configuration. | ||
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[[nsa-authentication-manager-erase-credentials]] | ||
* **erase-credentials** | ||
If set to true, the AuthenticationManager will attempt to clear any credentials data in the returned Authentication object, once the user has been authenticated. | ||
Literally it maps to the `eraseCredentialsAfterAuthentication` property of the xref:servlet/authentication/architecture.adoc#servlet-authentication-providermanager[`ProviderManager`]. | ||
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[[nsa-authentication-manager-id]] | ||
* **id** | ||
This attribute allows you to define an id for the internal instance for use in your own configuration. | ||
It is the same as the alias element, but provides a more consistent experience with elements that use the id attribute. | ||
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[[nsa-authentication-manager-children]] | ||
=== Child Elements of <authentication-manager> | ||
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* <<nsa-authentication-provider,authentication-provider>> | ||
* xref:servlet/appendix/namespace/ldap.adoc#nsa-ldap-authentication-provider[ldap-authentication-provider] | ||
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[[nsa-authentication-provider]] | ||
== <authentication-provider> | ||
Unless used with a `ref` attribute, this element is shorthand for configuring a `DaoAuthenticationProvider`. | ||
`DaoAuthenticationProvider` loads user information from a `UserDetailsService` and compares the username/password combination with the values supplied at login. | ||
The `UserDetailsService` instance can be defined either by using an available namespace element (`jdbc-user-service` or by using the `user-service-ref` attribute to point to a bean defined elsewhere in the application context). | ||
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[[nsa-authentication-provider-parents]] | ||
=== Parent Elements of <authentication-provider> | ||
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* <<nsa-authentication-manager,authentication-manager>> | ||
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[[nsa-authentication-provider-attributes]] | ||
=== <authentication-provider> Attributes | ||
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[[nsa-authentication-provider-ref]] | ||
* **ref** | ||
Defines a reference to a Spring bean that implements `AuthenticationProvider`. | ||
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If you have written your own `AuthenticationProvider` implementation (or want to configure one of Spring Security's own implementations as a traditional bean for some reason, then you can use the following syntax to add it to the internal list of `ProviderManager`: | ||
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[source,xml] | ||
---- | ||
<security:authentication-manager> | ||
<security:authentication-provider ref="myAuthenticationProvider" /> | ||
</security:authentication-manager> | ||
<bean id="myAuthenticationProvider" class="com.something.MyAuthenticationProvider"/> | ||
---- | ||
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[[nsa-authentication-provider-user-service-ref]] | ||
* **user-service-ref** | ||
A reference to a bean that implements UserDetailsService that may be created using the standard bean element or the custom user-service element. | ||
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[[nsa-authentication-provider-children]] | ||
=== Child Elements of <authentication-provider> | ||
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* <<nsa-jdbc-user-service,jdbc-user-service>> | ||
* xref:servlet/appendix/namespace/ldap.adoc#nsa-ldap-user-service[ldap-user-service] | ||
* <<nsa-password-encoder,password-encoder>> | ||
* <<nsa-user-service,user-service>> | ||
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[[nsa-jdbc-user-service]] | ||
== <jdbc-user-service> | ||
Causes creation of a JDBC-based UserDetailsService. | ||
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[[nsa-jdbc-user-service-attributes]] | ||
=== <jdbc-user-service> Attributes | ||
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[[nsa-jdbc-user-service-authorities-by-username-query]] | ||
* **authorities-by-username-query** | ||
An SQL statement to query for a user's granted authorities given a username. | ||
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The default is | ||
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[source] | ||
---- | ||
select username, authority from authorities where username = ? | ||
---- | ||
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[[nsa-jdbc-user-service-cache-ref]] | ||
* **cache-ref** | ||
Defines a reference to a cache for use with a UserDetailsService. | ||
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[[nsa-jdbc-user-service-data-source-ref]] | ||
* **data-source-ref** | ||
The bean ID of the DataSource which provides the required tables. | ||
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[[nsa-jdbc-user-service-group-authorities-by-username-query]] | ||
* **group-authorities-by-username-query** | ||
An SQL statement to query user's group authorities given a username. | ||
The default is | ||
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+ | ||
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[source] | ||
---- | ||
select | ||
g.id, g.group_name, ga.authority | ||
from | ||
groups g, group_members gm, group_authorities ga | ||
where | ||
gm.username = ? and g.id = ga.group_id and g.id = gm.group_id | ||
---- | ||
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[[nsa-jdbc-user-service-id]] | ||
* **id** | ||
A bean identifier, used for referring to the bean elsewhere in the context. | ||
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[[nsa-jdbc-user-service-role-prefix]] | ||
* **role-prefix** | ||
A non-empty string prefix that will be added to role strings loaded from persistent storage (default is "ROLE_"). | ||
Use the value "none" for no prefix in cases where the default is non-empty. | ||
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[[nsa-jdbc-user-service-users-by-username-query]] | ||
* **users-by-username-query** | ||
An SQL statement to query a username, password, and enabled status given a username. | ||
The default is | ||
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[source] | ||
---- | ||
select username, password, enabled from users where username = ? | ||
---- | ||
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[[nsa-password-encoder]] | ||
== <password-encoder> | ||
Authentication providers can optionally be configured to use a password encoder as described in the xref:features/authentication/password-storage.adoc#authentication-password-storage[Password Storage]. | ||
This will result in the bean being injected with the appropriate `PasswordEncoder` instance. | ||
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[[nsa-password-encoder-parents]] | ||
=== Parent Elements of <password-encoder> | ||
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* <<nsa-authentication-provider,authentication-provider>> | ||
* xref:servlet/appendix/namespace/authentication-manager.adoc#nsa-password-compare[password-compare] | ||
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[[nsa-password-encoder-attributes]] | ||
=== <password-encoder> Attributes | ||
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[[nsa-password-encoder-hash]] | ||
* **hash** | ||
Defines the hashing algorithm used on user passwords. | ||
We recommend strongly against using MD4, as it is a very weak hashing algorithm. | ||
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[[nsa-password-encoder-ref]] | ||
* **ref** | ||
Defines a reference to a Spring bean that implements `PasswordEncoder`. | ||
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[[nsa-user-service]] | ||
== <user-service> | ||
Creates an in-memory UserDetailsService from a properties file or a list of "user" child elements. | ||
Usernames are converted to lower-case internally to allow for case-insensitive lookups, so this should not be used if case-sensitivity is required. | ||
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[[nsa-user-service-attributes]] | ||
=== <user-service> Attributes | ||
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[[nsa-user-service-id]] | ||
* **id** | ||
A bean identifier, used for referring to the bean elsewhere in the context. | ||
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[[nsa-user-service-properties]] | ||
* **properties** | ||
The location of a Properties file where each line is in the format of | ||
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+ | ||
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[source] | ||
---- | ||
username=password,grantedAuthority[,grantedAuthority][,enabled|disabled] | ||
---- | ||
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[[nsa-user-service-children]] | ||
=== Child Elements of <user-service> | ||
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* <<nsa-user,user>> | ||
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[[nsa-user]] | ||
== <user> | ||
Represents a user in the application. | ||
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[[nsa-user-parents]] | ||
=== Parent Elements of <user> | ||
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* <<nsa-user-service,user-service>> | ||
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[[nsa-user-attributes]] | ||
=== <user> Attributes | ||
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[[nsa-user-authorities]] | ||
* **authorities** | ||
One of more authorities granted to the user. | ||
Separate authorities with a comma (but no space). | ||
For example, "ROLE_USER,ROLE_ADMINISTRATOR" | ||
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[[nsa-user-disabled]] | ||
* **disabled** | ||
Can be set to "true" to mark an account as disabled and unusable. | ||
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[[nsa-user-locked]] | ||
* **locked** | ||
Can be set to "true" to mark an account as locked and unusable. | ||
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[[nsa-user-name]] | ||
* **name** | ||
The username assigned to the user. | ||
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[[nsa-user-password]] | ||
* **password** | ||
The password assigned to the user. | ||
This may be hashed if the corresponding authentication provider supports hashing (remember to set the "hash" attribute of the "user-service" element). | ||
This attribute be omitted in the case where the data will not be used for authentication, but only for accessing authorities. | ||
If omitted, the namespace will generate a random value, preventing its accidental use for authentication. | ||
Cannot be empty. |
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