Unsigned/unencrypted assertions

For examples of the federation configuration files, refer to Example fedlet files. To set up multiple SPs, work through this page and SAML 2.0 and multiple applications.

Set up the network:

Add sp.example.com to your /etc/hosts file:
```
127.0.0.1 localhost am.example.com ig.example.com app.example.com sp.example.com
```
Traffic to the application is proxied through PingGateway, using the host name sp.example.com.

Configure a Java Fedlet:

The SAML library component validates the SP’s AssertionConsumerService Location against the incoming IDP SAML Assertion, based on the request information, including the port. In sp.xml, always specify the port in the Location value of AssertionConsumerService, even when using defaults of 443 or 80, as follows:

<AssertionConsumerService isDefault="true"
                          index="0"
                          Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
                          Location="https://sp.example.com:443/fedletapplication" />

For more information about Java Fedlets, refer to Creating and configuring the Fedlet in AM’s SAML v2.0 guide.

Copy and unzip the fedlet zip file, Fedlet-7.5.0.zip, delivered with the AM installation, into a local directory.

$ unzip $HOME/openam/Fedlet-7.5.0.zip

Archive:  Fedlet-7.5.0.zip
creating: conf/
inflating: README
inflating: conf/FederationConfig.properties
inflating: conf/fedlet.cot-template
inflating: conf/idp-extended.xml-template
inflating: conf/sp-extended.xml-template
inflating: conf/sp.xml-template
inflating: fedlet.war

In each file, search and replace the following properties:

Replace this With this

Replace this	With this
`IDP_ENTITY_ID`	`openam`
`FEDLET_ENTITY_ID`	`sp`
`FEDLET_PROTOCOL://FEDLET_HOST:FEDLET_PORT/FEDLET_DEPLOY_URI`	`http://sp.example.com:8080/saml`
`fedletcot` and `FEDLET_COT`	`Circle of Trust`
`sp.example.com:8080/saml/fedletapplication`	`sp.example.com:8080/saml/fedletapplication/metaAlias/sp`

IDP_ENTITY_ID

openam

FEDLET_ENTITY_ID

sp

FEDLET_PROTOCOL://FEDLET_HOST:FEDLET_PORT/FEDLET_DEPLOY_URI

http://sp.example.com:8080/saml

fedletcot and FEDLET_COT

Circle of Trust

sp.example.com:8080/saml/fedletapplication

sp.example.com:8080/saml/fedletapplication/metaAlias/sp

Save the files as .xml, without the -template extension, so that the directory looks like this:
```
conf
├── FederationConfig.properties
├── fedlet.cot
├── idp-extended.xml
├── sp-extended.xml
└── sp.xml
```
By default, AM as an IDP uses the NameID format urn:oasis:names:tc:SAML:2.0:nameid-format:transient to communicate about a user. For information about using a different NameID format, refer to Non-transient NameID format.

Set up AM:
1. In the AM admin UI, select Identities, select the user demo, and change the last name to Ch4ng31t. Note that, for this example, the last name must be the same as the password.
2. Select Applications > Federation > Circles of Trust, and add a circle of trust called Circle of Trust, with the default settings.
3. Set up a remote service provider:
  1. Select Applications > Federation > Entity Providers, and add a remote entity provider.
  2. Drag in or import sp.xml created in the previous step.
  3. Select Circles of Trust: Circle of Trust.
4. Set up a hosted identity provider:
  1. Select Applications > Federation > Entity Providers, and add a hosted entity provider with the following values:
    
    Entity ID: openam
    
    Entity Provider Base URL: http://am.example.com:8088/openam
    
    Identity Provider Meta Alias: idp
    
    Circles of Trust: Circle of Trust
  2. Select Assertion Processing > Attribute Mapper, map the following SAML attribute keys and values, and then save your changes:
    
    SAML Attribute: cn, Local Attribute: cn
    
    SAML Attribute: sn, Local Attribute: sn
  3. In a terminal, export the XML-based metadata for the IDP:
    
    $ curl -v \ --output idp.xml \ "http://am.example.com:8088/openam/saml2/jsp/exportmetadata.jsp?entityid=openam"
    
    The idp.xml file is created locally.

Set up PingGateway:

Copy the edited fedlet files, and the exported idp.xml file into the PingGateway configuration, at $HOME/.openig/SAML.
```
$ ls -l $HOME/.openig/SAML

FederationConfig.properties
fedlet.cot
idp-extended.xml
idp.xml
sp-extended.xml
sp.xml
```
In config.json, comment out or remove the baseURI:
```
{
  "handler": {
    "_baseURI": "http://app.example.com:8081",
    ...
  }
}
```
Requests to the SamlFederationHandler must not be rebased, because the request URI must match the endpoint in the SAML metadata.

Add the following route to PingGateway to serve the sample application .css and other static resources:

Linux
Windows

$HOME/.openig/config/routes/00-static-resources.json

%appdata%\OpenIG\config\routes\00-static-resources.json

{
  "name" : "00-static-resources",
  "baseURI" : "http://app.example.com:8081",
  "condition": "${find(request.uri.path,'^/css') or matchesWithRegex(request.uri.path, '^/.*\\\\.ico$') or matchesWithRegex(request.uri.path, '^/.*\\\\.gif$')}",
  "handler": "ReverseProxyHandler"
}

Add the following route to PingGateway:
- Linux
- Windows
$HOME/.openig/config/routes/saml-handler.json
%appdata%\OpenIG\config\routes\saml-handler.json
```
{
  "name": "saml-handler",
  "condition": "${find(request.uri.path, '^/saml')}",
  "handler": {
    "type": "SamlFederationHandler",
    "config": {
      "useOriginalUri": true,
      "assertionMapping": {
        "username": "cn",
        "password": "sn"
      },
      "subjectMapping": "sp-subject-name",
      "redirectURI": "/home/federate"
    }
  }
}
```
Notice the following features of the route:
- The route matches requests to /saml.
- After authentication, the SamlFederationHandler extracts cn and sn from the SAML assertion, and maps them to the SessionContext, at session.username and session.password.
- The handler stores the subject name as a string in the session field session.sp-subject-name, which is named by the subjectMapping property. By default, the subject name is stored in the session field session.subjectName.
- The handler redirects the request to the /federate route.

Add the following route to PingGateway:

Linux
Windows

$HOME/.openig/config/routes/federate-handler.json

%appdata%\OpenIG\config\routes\federate-handler.json

{
  "name": "federate-handler",
  "condition": "${find(request.uri.path, '^/home/federate')}",
  "baseURI": "http://app.example.com:8081",
  "handler": {
    "type": "DispatchHandler",
    "config": {
      "bindings": [
        {
          "condition": "${empty session.username}",
          "handler": {
            "type": "StaticResponseHandler",
            "config": {
              "status": 302,
              "headers": {
                "Location": [
                  "http://sp.example.com:8080/saml/SPInitiatedSSO?metaAlias=/sp"
                ]
              }
            }
          }
        },
        {
          "handler": {
            "type": "Chain",
            "config": {
              "filters": [
                {
                  "type": "HeaderFilter",
                  "config": {
                    "messageType": "REQUEST",
                    "add": {
                      "x-username": ["${session.username[0]}"],
                      "x-password": ["${session.password[0]}"]
                    }
                  }
                }
              ],
              "handler": "ReverseProxyHandler"
            }
          }
        }
      ]
    }
  }
}

Notice the following features of the route:

The route matches requests to /home/federate.
If the user is not authenticated with AM, the username is not populated in the context. The DispatchHandler then dispatches the request to the StaticResponseHandler, which redirects it to the SP-initiated SSO endpoint.

If the credentials are in the context, or after successful authentication, the DispatchHandler dispatches the request to the Chain.
The HeaderFilter adds headers for the first value for the username and password attributes of the SAML assertion.

Restart PingGateway.

Test the setup:
1. Log out of AM, and test the setup with the following links:
  - IDP-initiated SSO
  - SP-initiated SSO
2. Log in to AM with username demo and password Ch4ng31t.
  
  PingGateway returns the response page showing that the the demo user has logged in.

For more control over the URL where the user agent is redirected, use the RelayState query string parameter in the URL of the redirect Location header. RelayState specifies where to redirect the user when the SAML 2.0 web browser SSO process is complete. It overrides the redirectURI set in the SamlFederationHandler.

The RelayState value must be URL-encoded. When using an expression, use a function to encode the value. For example, use ${urlEncodeQueryParameterNameOrValue(contexts.router.originalUri)}.

In the following example, the user is finally redirected to the original URI from the request:

"headers": {
  "Location": [
    "http://ig.example.com:8080/saml/SPInitiatedSSO?RelayState=${urlEncodeQueryParameterNameOrValue(contexts.router.originalUri)}"
  ]
}

PingGateway 2024.11

Unsigned/unencrypted assertions