This app provides a simple SAML Identity Provider (IdP) to test SAML 2.0 Service Providers (SPs) with the SAML 2.0 Web Browser SSO Profile or the Single Logout Profile.
This sample is not intended for use with production systems!
npm install --global saml-idpFrom inside a local copy of this repo
npm install
# or
npm linknpm install saml-idp- docker-compose build
- docker-compose up
Simply modify Dockerfile to specify your own parameters.
You must generate a self-signed certificate for the IdP.
The private key should be unique to your test IdP and not shared!
You can generate a keypair using the following command (requires openssl in your path):
openssl req -x509 -new -newkey rsa:2048 -nodes -subj '/C=US/ST=California/L=San Francisco/O=JankyCo/CN=Test Identity Provider' -keyout idp-private-key.pem -out idp-public-cert.pem -days 7300An IdP server can be started using the exported runServer function. runServer accepts a config object which matches the interface of the saml-idp command.
const {runServer} = require('saml-idp');
runServer({
acsUrl: `https://foo.okta.com/auth/saml20/assertion-consumer`,
audience: `https://foo.okta.com/auth/saml20/metadata`,
});const {runServer} = require('saml-idp');
runServer({
acsUrl: `https://foo.okta.com/auth/saml20/assertion-consumer`,
audience: `https://foo.okta.com/auth/saml20/metadata`,
config: {
user: userDefaults,
// The auth-service requires at least one AttributeStatement in the SAML assertion.
metadata: [{
id: 'email',
optional: false,
displayName: 'E-Mail Address',
description: 'The e-mail address of the user',
multiValue: false
}, {
id: "userType",
optional: true,
displayName: 'User Type',
description: 'The type of user',
options: ['Admin', 'Editor', 'Commenter']
}],
user: {
email: '[email protected]',
},
},
});saml-idp --acs {POST URL} --aud {audience}saml-idp --acs {POST URL} --slo {POST URL} --aud {audience}
Open http://localhost:7000 in your browser to start an IdP initiated flow to your SP
saml-idp --acs https://foo.okta.com/auth/saml20/example --aud https://www.okta.com/saml2/service-provider/spf5aFRRXFGIMAYXQPNV
Most parameters can be defined with the following command-line arguments:
Options:
--help Show help [boolean]
--version Show version number [boolean]
--settings Path to JSON config file
--port, -p IdP Web Server Listener Port [required] [default: 7000]
--cert IdP Signature PublicKey Certificate [required] [default: "./idp-public-cert.pem"]
--key IdP Signature PrivateKey Certificate [required] [default: "./idp-private-key.pem"]
--issuer, --iss IdP Issuer URI [required] [default: "urn:example:idp"]
--acsUrl, --acs SP Assertion Consumer URL [required]
--sloUrl, --slo SP Single Logout URL
--audience, --aud SP Audience URI [required]
--serviceProviderId, --spId SP Issuer/Entity URI [string]
--relayState, --rs Default SAML RelayState for SAMLResponse
--disableRequestAcsUrl, --static Disables ability for SP AuthnRequest to specify Assertion Consumer URL [boolean] [default: false]
--encryptAssertion, --enc Encrypts assertion with SP Public Key [boolean] [default: false]
--encryptionCert, --encCert SP Certificate (pem) for Assertion Encryption [string]
--encryptionPublicKey, --encKey SP RSA Public Key (pem) for Assertion Encryption (e.g. openssl x509 -pubkey -noout -in sp-cert.pem) [string]
--httpsPrivateKey Web Server TLS/SSL Private Key (pem) [string]
--httpsCert Web Server TLS/SSL Certificate (pem) [string]
--https Enables HTTPS Listener (requires httpsPrivateKey and httpsCert) [boolean] [required] [default: false]
--configFile, --conf Path to a SAML attribute config file [required] [default: "/Users/karl/src/saml-idp/config.js"]
--rollSession Create a new session for every authn request instead of reusing an existing session [boolean] [default: false]
--authnContextClassRef, --acr Authentication Context Class Reference [string] [default: "urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport"]
--authnContextDecl, --acd Authentication Context Declaration (XML FilePath) [string]
The default IdP issuer is urn:example:idp. You can change this with the --iss argument.
The signing certificate public key must be specified as a file path or PEM string using the cert argument
The signing certificate private key must be specified as a file path or PEM string using the key argument
Signing certificate key/cert pairs can also be passed from environment variables.
saml-idp --acs {POST URL} --aud {audience} --cert="$SAML_CERT" --key="$SAML_KEY"
Both SSO POST and Redirect bindings are available on the same endpoint which by default is http://localhost:7000/saml/sso
| Binding | URL |
|---|---|
| HTTP-Redirect | http://localhost:port/saml/sso |
| HTTP-POST | http://localhost:port/saml/sso |
Both SSO POST and Redirect bindings are available on the same endpoint which by default is http://localhost:7000/saml/slo
| Binding | URL |
|---|---|
| HTTP-Redirect | http://localhost:port/saml/slo |
| HTTP-POST | http://localhost:port/saml/slo |
IdP SAML metadata is available on http://localhost:port/metadata
The IdP mints the user's profile as a SAML Assertion Attribute Statement using the metadata property in config.js. Profile properties that match a metadata entry id property will be generated as a SAML Attribute with the same name. The IdP UI will automatically render an input for each entry defined via a metadata entry in config.js with a default value from the matching profile property.
{
"email": "[email protected]"
}{
"id": "email",
"optional": false,
"displayName": "E-Mail Address",
"description": "The e-mail address of the user",
"multiValue": false
}<saml:Attribute Name="email"><saml:AttributeValue xsi:type="xs:anyType">[email protected]</saml:AttributeValue>The default profile mappings are defined in config.js as:
| Profile Property | SAML Attribute Name |
|---|---|
| userName | Subject NameID |
| nameIdFormat | Subject NameID Format |
| nameIdNameQualifier | Subject NameID Name Qualifer |
| nameIdSPNameQualifier | Subject NameID SP Name Qualifer |
| nameIdSPProvidedID | Subject NameID SP ProvidedID |
| firstName | firstName |
| lastName | lastName |
| displayName | displayName |
email |
|
| mobilePhone | mobilePhone |
| groups | groups |
SAML attribute mappings currently default to Okta (Inbound SAML)
New attributes can be defined at runtime in the IdP UI or statically by modifying the profile and metadata objects in config.js.
-
Add metadata entry for your new attributes. The
idproperty must be the name of the SAML Attribute{ "id": "customAttribute", "optional": false, "displayName": "Custom Attribute", "description": "My custom attribute", "multiValue": false } -
Optionally add a default profile attribute value that will be used on startup
Encrypted assertions require both a certificate and public key from the target service provider in the PEM format (base64 encoding of .der, .cer, .cert, .crt). You can convert certificate formats with openssl
openssl x509 -inform der -in to-convert.der -out converted.pem
The following formats or extensions should be convertible to the pem format:
.der,.cer,.cert, `.crt
PEM files that contain the header -----BEGIN CERTIFICATE----- can also be converted to just the public key which is a file with just the -----BEGIN PUBLIC KEY----- header
openssl x509 -pubkey -noout -in cert.pem > pub.key