Configure GAS to support SAML SSO

Follow these steps to setup Genero SAML service.

Before you can use SAML Single sign-on (SSO) with the GAS, a circle of trust must be established between the service providers (the GAS) and one or more SAML identity providers (an entity in charge of managing and authenticating the users). This is established via SAML metadata exchange, where each party imports the metadata from the other party. Each party's metadata defines how to communicate with it.

An X.509 certificate authority file can also be exchanged in order to validate SAML signatures.

If the GAS is located behind a proxy, configure the proxy in the SAML FGLPROFILE.
Uncomment and set correct values for the entries proxy.http.location and proxy.https.location.
Create an X.509 Certificate and its private key.
SAML requires digital signatures. See the Create the client certificate page in Genero Business Development Language User Guide for information on creating the certificate and its private key.
Modify the SAML configuration file and enter the X.509 certificate and private key information.
The SAML configuration file is located in $FGLDIR/web_utilities/services/saml/res.

Set values for the entries xml.saml_signature.x509 and xml.saml_signature.key.

If your Genero Web application must be accessible in HTTP, you must also use that key and certificate for XML-Encryption to be fully secure. Uncomment and set the same values for the entries xml.saml_encryption.x509 and xml.saml_encryption.key.
Create a circle of trust between the GAS and a SAML provider. Import the IdP metadata file into the GAS SAML service provider.
In this step you are configuring the GAS to trust the IdP you are going to access via SAML.
1. Set the SAML environment.
  On UNIX™ (using sh as shell script):
```
cd $FGLDIR/web_utilities/services/saml
. ./envsaml.sh
```
  On Windows®:
```
cd "%FGLDIR%\web_utilities\services\saml"
envsaml.bat
```
2. Register the SAML IdP with Genero SAML by launching the ImportIdP application with the SAML IdP URL.
  Refer to the IdP documentation for information on generating the metadata file (or the URL) from the SAML identity provider.
  Example:
  On UNIX:
```
cd $FGLDIR/web_utilities/services/saml/bin
fglrun ImportIdp --import http[s]://host:port/openam_954/saml2/jsp/exportmetadata.jsp
```
  On Windows:
```
cd "%FGLDIR%\web_utilities\services\saml\bin"
fglrun ImportIdp --import http[s]://host:port/openam_954/saml2/jsp/exportmetadata.jsp
```
3. Retrieve the SAML provider Certificate and add it as a trusted certificate in the SAML configuration file (if needed).
  Uncomment and set the correct values for the entry xml.keystore.calist; see Certificate authority for more details.
  
  Refer to the SAML Identity Provider (IdP) documentation for information about retrieving its X.509 certificate.
Create a circle of trust between the SAML provider and the GAS.
In this step you are integrating the IdP with the GAS so that trust is established.
1. Start the dispatcher (if needed).
2. Log in to your SAML provider and create a circle of trust based on the GAS SAML metadata.
  Generate the metadata from this URL:
```
http[s]://host:port/gas/ws/r/services/SAMLServiceProvider/Metadata
```
  An XML descriptor page should open. If the page fails to open, make sure you have the certificates (.crt and .pem) in $FGLDIR/web_utilities/services/saml/res/crt as specified in the $FGLDIR/web_utilities/services/saml/res/configuration file.
  - For instance, you may need to configure URLs in the IdP with URLs specified in the Genero SAML metadata page. Refer to the SAML Identity Provider (IdP) documentation for information about importing the Genero SAML metadata.
  - Make sure Genero applications are configured to use HTTPS.
  - GAS default SAML identity name is "urn:genero". If needed, you can change the identifier by modifying the saml.entityID entry in the SAML configuration file.

The GAS is ready to support SAML SSO.