SAML2MetadataConfiguration

Metadata-based configuration of SAML login code is better than configuring URLs and certificates because it ensures certificates between a ID Provider and application stay in sync. This project provides Metadata-based configuration of the passport-wsfed-saml2 strategy, though it could also be adopted to work with other platforms.

npm install saml2-metadata-config

Basic usage:

var Saml2MetadataConfiguration= require('saml2-metadata-config') 

Saml2MetadataConfiguration.configure( {
  metadataUrl:'https://adfs.company.com/federationMetadata/2007-06/FederationMetadata.xml'     
}).then(function(options){
    //options.identityProviderUrl and options.thumbprints populated.
});

Full example:

var passport = require('passport'); //auth library for express
var WsFedSaml2Strategy= require('./node_modules/passport-wsfed-saml2/lib/passport-wsfed-saml2/index').Strategy; //WS-Federation/SAML plugin for passport
var Saml2MetadataConfiguration= require('saml2-metadata-config') //Metadata Config library


Saml2MetadataConfiguration.configure( {
  metadataUrl:'https://adfs.company.com/federationMetadata/2007-06/FederationMetadata.xml',
  realm: 'urn:your-relying-party-id,  //In ADFS this is the Relying Party Identifier - a URL or URN identifying your app
  wreply: 'https://thisapp.company.com/login/callback' //In ADFS, the root of this path (https://thisapp.company.com) must be one of the WS-Federation endpoints
}).then(function(options){
      //Configure passport to use WSFED against ADFS
      passport.use('wsfed-saml2',  new WsFedSaml2Strategy(options,
          function (profile, done) {
            //Called when the user authenticates.  We could lookup a user in DB, etc.  For now, just pass the profile as the user.  
            console.log("Auth with", profile);
            if (!profile.email) {
              return done(new Error("No email found"), null);
            }
            done(null, profile); //Profile doesn't have to = user, but for simplicity we do this here.  done(null,userFromDb) would also be possible
        }));
    },
   function(e){
      console.log(e);
     // throw "unable to configure using metadata"; //e; 
   });