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Custom Scripts#

Prerequisite: Know how to use the Janssen CLI in command-line mode

Interception scripts can be used to implement custom business logic for authentication, authorization, and more in a way that is upgrade-proof and doesn't require forking the Gluu Server code. Using Janssen CLI, we can manage custom scripts as well.

Let's get the task information using below command:

/opt/jans/jans-cli/config-cli.py --info CustomScripts

In return we gets each of the sub-task details:

Operation ID: get-config-scripts
  Description: Gets a list of custom scripts.
Operation ID: post-config-scripts
  Description: Adds a new custom script.
  Schema: /components/schemas/CustomScript
Operation ID: put-config-scripts
  Description: Updates a custom script.
  Schema: /components/schemas/CustomScript
Operation ID: get-config-scripts-by-type
  Description: Gets list of scripts by type.
  url-suffix: type
Operation ID: get-config-scripts-by-inum
  Description: Gets a script by Inum.
  url-suffix: inum
Operation ID: delete-config-scripts-by-inum
  Description: Deletes a custom script.
  url-suffix: inum

To get sample schema type /opt/jans/jans-cli/config-cli.py --schema <schma>, for example /opt/jans/jans-cli/config-cli.py --schema CustomScript

Let's perform each of this operation.

Find list of Custom scripts#

get-config-scripts operation id can be used to get a list of custom scripts of the Janssen Server.

The command line is:

/opt/jans/jans-cli/config-cli.py --operation-id get-config-scripts

It returns all the custom scripts of the Janssen Server.

Adds a New Custom Script#

If we look at the description of this operation we see it supports schema:

Operation ID: post-config-scripts
  Description: Adds a new custom script.
  Schema: /components/schemas/CustomScript

So, let's get the schema first:

/opt/jans/jans-cli/config-cli.py CustomScript > /tmp/cs.json

{
  "dn": null,
  "inum": null,
  "name": "string",
  "aliases": [],
  "description": null,
  "script": "_file /root/script.py",
  "scriptType": "INTROSPECTION",
  "programmingLanguage": "PYTHON",
  "moduleProperties": {
    "value1": null,
    "value2": null,
    "description": null
  },
  "configurationProperties": {
    "value1": null,
    "value2": null,
    "description": null,
    "hide": true
  },
  "level": "integer",
  "revision": 0,
  "enabled": false,
  "scriptError": {
    "raisedAt": null,
    "stackTrace": null
  },
  "modified": false,
  "internal": false
}

We need to fill some of these properties with valid data to add this new script. 

{
  "name": "custom_script_client",
  "aliases": null,
  "description": "Testing custom script addition",
  "script": "_file /root/client_registration.py",
  "scriptType": "CLIENT_REGISTRATION",
  "programmingLanguage": "PYTHON",
  "moduleProperties": [{
    "value1": "myvalue1",
    "value2": "myvalue2",
    "description": "description for this property"
  }],
  "configurationProperties": null,
  "level": 100,
  "revision": 0,
  "enabled": false,
  "scriptError": null,
  "modified": false,
  "internal": false
}
We can remove dn, inum. As because these two items are auto generated with random value. Also we see aliases, moduleproperties and configurationProperties are the array type keys. So we need to put data into [] otherwise it will raise an error. We can also use null value if we need to skip any of them. For scriptType we can choose only selected type of script from the below list.

Name of the type of scripts#

PERSON_AUTHENTICATION, INTROSPECTION, RESOURCE_OWNER_PASSWORD_CREDENTIALS, APPLICATION_SESSION, CACHE_REFRESH, CLIENT_REGISTRATION, ID_GENERATOR, UMA_RPT_POLICY, UMA_RPT_CLAIMS, UMA_CLAIMS_GATHERING, CONSENT_GATHERING, DYNAMIC_SCOPE, SPONTANEOUS_SCOPE, END_SESSION, POST_AUTHN, SCIM, CIBA_END_USER_NOTIFICATION, PERSISTENCE_EXTENSION, IDP, UPDATE_TOKEN

Programming Language#

Two types of programming language available there. Those are Python and JavaScript. We can choose any of them regarding the script we need to add.

Alright, let's add the script using the command line we have:

/opt/jans/jans-cli/config-cli.py --operation-id post-config-scripts --data /tmp/cs.json

Getting access token for scope https://jans.io/oauth/config/scripts.write
Server Response:
{
  "dn": "inum=61aef81b-b22d-42c0-89d5-b098c976a2b7,ou=scripts,o=jans",
  "inum": "61aef81b-b22d-42c0-89d5-b098c976a2b7",
  "name": "custom_script_client",
  "aliases": null,
  "description": "Testing custom script addition",
  "script": "...",
  "scriptType": "CLIENT_REGISTRATION",
  "programmingLanguage": "PYTHON",
  "moduleProperties": [
    {
      "value1": "myvalue1",
      "value2": "myvalue2",
      "description": "description for this property"
    }
  ],
  "configurationProperties": null,
  "level": 100,
  "revision": 0,
  "enabled": false,
  "scriptError": null,
  "modified": false,
  "internal": false
}

Update an existing Custom Script#

put-config-scripts operation-id can be used to update any existing script on the Janssen server.

Operation ID: put-config-scripts
  Description: Updates a custom script.
  Schema: /components/schemas/CustomScript
As we created a custom script in the above, let's update that one. So we know the dn:inum=61aef81b-b22d-42c0-89d5-b098c976a2b7,ou=scripts,o=jans and inum:61aef81b-b22d-42c0-89d5-b098c976a2b7 here. In this case, I have modified as below:

{
  "dn": "inum=61aef81b-b22d-42c0-89d5-b098c976a2b7,ou=scripts,o=jans",
  "inum": "61aef81b-b22d-42c0-89d5-b098c976a2b7",
  "name": "custom_script_client",
  "aliases": null,
  "description": "Testing custom script addition",
  "script": "_file /root/client_registrationj.py",
  "scriptType": "CLIENT_REGISTRATION",
  "programmingLanguage": "PYTHON",
  "moduleProperties": [{
    "value1": "myvalue1",
    "value2": "myvalue2",
    "description": "description for this property"
  }],
  "configurationProperties": [{
    "value1": "testconfigvalue1",
    "value2": "testconfigvalue2",
    "description": "description for configuration property",
    "hide": true
  }],
  "level": 100,
  "revision": 0,
  "enabled": false,
  "scriptError": null,
  "modified": false,
  "internal": false
}

You can see, I have added configurationProperties for testing purpose only. In case you need to change the script, you can do that by changing the script path as well.

/opt/jans/jans-cli/config-cli.py --operation-id put-config-scripts --data /tmp/cs.json

Getting access token for scope https://jans.io/oauth/config/scripts.write
Server Response:
{
  "dn": "inum=61aef81b-b22d-42c0-89d5-b098c976a2b7,ou=scripts,o=jans",
  "inum": "61aef81b-b22d-42c0-89d5-b098c976a2b7",
  "name": "custom_script_client",
  "aliases": null,
  "description": "Testing custom script addition",
  "script": "...",
  "scriptType": "CLIENT_REGISTRATION",
  "programmingLanguage": "PYTHON",
  "moduleProperties": [
    {
      "value1": "myvalue1",
      "value2": "myvalue2",
      "description": "description for this property"
    }
  ],
  "configurationProperties": [
    {
      "value1": "testconfigvalue1",
      "value2": "testconfigvalue2",
      "description": "description for configuration property",
      "hide": true
    }
  ],
  "level": 100,
  "revision": 0,
  "enabled": false,
  "scriptError": null,
  "modified": false,
  "internal": false
}

Get Custom Script by type#

With this operation-id, we can find a specific type of scripts. It uses url-suffix to get the list of a single type scripts.

Operation ID: get-config-scripts-by-type
  Description: Gets list of scripts by type.
  url-suffix: type

The command line is: 

/opt/jans/jans-cli/config-cli.py --operation-id get-config-scripts-by-type --url-suffix type:script-type-name

For an example, let's find all the scripts of CLIENT_REGISTRATION type. So, the command line is:

/opt/jans/jans-cli/config-cli.py --operation-id get-config-scripts-by-type --url-suffix type:CLIENT_REGISTRATION

It returns all the custom scripts that are related to the CLIENT_REGISTRATION type available in the Janssen Server. You will find the name of all the types here

Get Custom Scripts by it's inum#

In case we need to find out details configuration of any custom script, we can search by its unique inum value. 

Operation ID: get-config-scripts-by-inum
  Description: Gets a script by Inum.
  url-suffix: inum

command line:

/opt/jans/jans-cli/config-cli.py --operation-id get-config-scripts-by-inum --url-suffix inum:inum_value

For example, we can show details here that we already added in the Janssen Server and we know it's inum value is 61aef81b-b22d-42c0-89d5-b098c976a2b7.

In our case, the command line is:

/opt/jans/jans-cli/config-cli.py --operation-id get-config-scripts-by-inum --url-suffix inum:61aef81b-b22d-42c0-89d5-b098c976a2b7

It returns the configuration of the custom script matched with the given inum value.

Getting access token for scope https://jans.io/oauth/config/scripts.readonly
{
  "dn": "inum=61aef81b-b22d-42c0-89d5-b098c976a2b7,ou=scripts,o=jans",
  "inum": "61aef81b-b22d-42c0-89d5-b098c976a2b7",
  "name": "custom_script_client",
  "aliases": null,
  "description": "Testing custom script addition",
  "script": "...",
  "scriptType": "CLIENT_REGISTRATION",
  "programmingLanguage": "PYTHON",
  "moduleProperties": [
    {
      "value1": "myvalue1",
      "value2": "myvalue2",
      "description": "description for this property"
    }
  ],
  "configurationProperties": [
    {
      "value1": "testconfigvalue1",
      "value2": "testconfigvalue2",
      "description": "description for configuration property",
      "hide": true
    }
  ],
  "level": 100,
  "revision": 0,
  "enabled": false,
  "scriptError": null,
  "modified": false,
  "internal": false
}

How to delete Custom Script?#

Well, we can delete any custom script also in deed. In that case, we need to remember the inum value of the custom script we want to delete. In the above we added, updated a custom script. We know the inum value, so let's delete this one.

Command line: 

/opt/jans/jans-cli/config-cli.py --operation-id delete-config-scripts-by-inum --url-suffix inum:inum_value

For example, in our case; the command line is:

/opt/jans/jans-cli/config-cli.py --operation-id delete-config-scripts-by-inum --url-suffix inum:61aef81b-b22d-42c0-89d5-b098c976a2b7

That's all for Custom Script management with CLI feature.

Last update: 2023-08-03
Created: 2021-05-31