Udap.Metadata.Server 0.5.7

Udap.Metadata.Server

📦 Nuget Package: Udap.Client

This package includes a MVC controller, an extension method to load, and an implementation if ICertificateStore as FileCertificateStore so you can get a sample up and running quickly.

Program.cs could be as easy as this example.

using Udap.Common;
using Udap.Metadata.Server;

var builder = WebApplication.CreateBuilder(args);
builder.Services
    .AddControllers()
    .UseUdapMetaDataServer(builder.Configuration);

builder.Services.AddSingleton<ICertificateStore, MyCustomCertificateStore>();

Full Example

Below is a full example. Alternatively the 2023 FHIR® DevDays Tutorial is another great way to learn how to use Udap.Metadata.Server.

Add this package to your FHIR® server or any web api server to.

dotnet new sln -o WebApiProject1
cd WebApiProject1

dotnet new webapi -o WebApi1 -minimal
dotnet sln add ./WebApi1/WebApi1.csproj

cd WebApi1

dotnet add package Udap.Metadata.Server 

Or until a first release use the --prerelease tag.

dotnet add package Udap.Metadata.Server --prerelease

dotnet build

Add the UseUdapMetaDataServer service extension to program.cs

 builder.Services
    .AddControllers()
    .AddUdapMetaDataServer(builder.Configuration);

By default, AddUdapMetaDataServer registers the default IUdapMetadataOptionsProvider implmentation of UdapMetadataOptionsProvider. UdapMetadataOptionsProvider finds the UdapMetadataOptionsFile in AppSettings

"UdapMetadataOptionsFile": "udap.metadata.options.json"

udap.metadata.options.json:

{
  "UdapVersionsSupported": [ "1" ],
    "UdapProfilesSupported": [ "udap_dcr", "udap_authn", "udap_authz", "udap_to" ],
    "UdapAuthorizationExtensionsSupported": [ "hl7-b2b" ],
    "UdapAuthorizationExtensionsRequired": [ "hl7-b2b" ],
    "ScopesSupported": [ "openid", "system/*.read", "user/*.read", "patient/*.read" ],
    "UdapCertificationsSupported": [ "http://MyUdapCertification", "http://MyUdapCertification2" ],
    "UdapCertificationsRequired": [ "http://MyUdapCertification" ],
    "GrantTypesSupported": [ "authorization_code", "refresh_token", "client_credentials" ],
    //"TokenEndpointAuthSigningAlgValuesSupported": [ "RS256", "RS384", "ES256", "ES384" ],
    //"RegistrationEndpointJwtSigningAlgValuesSupported": [ "RS256", "RS384", "ES256", "ES384" ],
    
    "UdapMetadataConfigs": [
      {
        "Community": "http://localhost",
        "SignedMetadataConfig": {
          "AuthorizationEndpoint": "https://securedcontrols.net:5001/connect/authorize",
          "TokenEndpoint": "https://securedcontrols.net:5001/connect/token",
          "RegistrationEndpoint": "https://securedcontrols.net:5001/connect/register"
        }
      }
    ]
}

UDAP Metadata Options: see Required UDAP Metadata

The UdapMetadataOptions class defines the configurable properties for UDAP metadata, as seen above in udap.metadata.options.json.

Known Properties

• UdapVersionsSupported: Array of supported UDAP versions (e.g., ["1"])
• UdapProfilesSupported: Array of supported UDAP profiles (e.g., ["udap_dcr", "udap_authn"])
• UdapAuthorizationExtensionsSupported: Array of supported authorization extensions
• UdapAuthorizationExtensionsRequired: Array of required authorization extensions
• UdapCertificationsSupported: Array of supported certifications
• UdapCertificationsRequired: Array of required certifications
• GrantTypesSupported: Array of supported OAuth2 grant types
• ScopesSupported: Array of supported scopes
• TokenEndpointAuthSigningAlgValuesSupported: Array of supported signing algorithms for the token endpoint
• RegistrationEndpointJwtSigningAlgValuesSupported: Array of supported signing algorithms for the registration endpoint
• UdapMetadataConfigs: Array of community-specific metadata configurations
• CertificateResolveTimeoutSeconds: Timeout in seconds for certificate resolution (default: 10)

Extending Metadata

You can add additional custom properties to your udap.metadata.options.json file. Any extra properties not explicitly defined above will be loaded and made available in the published metadata via the ExtensionData dictionary. This allows for flexible extension of the metadata without modifying the core model.

Certificate Store

The settings in udap.metadata.options.json will match the IssuedCerts settings in UdapFileCertStoreManifest settings of the appsettings.json. See below.

To serve UDAP metadata, certificates will be loaded through an implementation of ICertificatStore. Below is the built-in file-based implementation for lab experiments.

// UDAP CertStore
builder.Services.Configure<UdapFileCertStoreManifest>(builder.Configuration.GetSection("UdapFileCertStoreManifest"));
builder.Services.AddSingleton<ICertificateStore, FileCertificateStore>();

To continue this example, copy the following files from the Udap.PKI.Generator test project output to the following directory structure at the root of the WebApi1 project. Ensure each file's "Copy to Output Directory" is set to copy.

• CertStore
  • issued
    • weatherApiClientLocalhostCert.pfx

Add configuration to AppSettings to point to the certificates.

Note From AppSettings

UdapMetadataOptions:UdapMetadataConfigs:Community value is the link to UdapFileCertStoreManifest:ResourceServers:Communities.Name. In this example the community is identified by the name http://localhost. Community names are constrained as a URI

/*   
  Normally put someplace safer like secrets.json or secured database
  and add this to Program.cs.    
*/

"UdapFileCertStoreManifest": {
  "Communities": [
    {
      "Name": "http://localhost",
      "IssuedCerts": [
        {
          "FilePath": "CertStore/issued/weatherApiClientLocalhostCert.pfx",
          "Password": "udap-test"
        }
      ]
    }
  ]    
}

dotnet run

Navigate to http://localhost:5079/.well-known/udap or http://localhost:5079/swagger.

At this point a success would result in a result similar to the following json. Ensure the signed_metadata property contains a signed JWT token.

<details open><summary><a>View Metadata</></summary>

{
  "udap_versions_supported": [
    "1"
  ],
  "udap_profiles_supported": [
    "udap_dcr",
    "udap_authn",
    "udap_authz"
  ],
  "udap_authorization_extensions_supported": [
    "hl7-b2b"
  ],
  "udap_authorization_extensions_required": [
    "hl7-b2b"
  ],
  "udap_certifications_supported": [
    "http://MyUdapCertification",
    "http://MyUdapCertification2"
  ],
  "udap_certifications_required": [
    "http://MyUdapCertification"
  ],
  "grant_types_supported": [
    "client_credentials"
  ],
  "scopes_supported": [
    "openid",
    "system/Patient.read",
    "system/AllergyIntolerance.read",
    "system/Procedures.read",
    "system/Observation.read"
  ],
  "authorization_endpoint": "https://securedcontrols.net/connect/authorize",
  "token_endpoint": "https://securedcontrols.net/connect/token",
  "token_endpoint_auth_methods_supported": [
    "private_key_jwt"
  ],
  "token_endpoint_auth_signing_alg_values_supported": [
    "RS256"
  ],
  "registration_endpoint": "https://securedcontrols.net/connect/register",
  "registration_endpoint_jwt_signing_alg_values_supported": [
    "RS256"
  ],
  "signed_metadata": "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.eyJpc3MiOiJodHRwczovL3N0YWdlLmhlYWx0aHRvZ28ubWU6ODE4MSIsInN1YiI6Imh0dHBzOi8vc3RhZ2UuaGVhbHRodG9nby5tZTo4MTgxIiwiaWF0IjoxNjc2OTM3NjI3LCJleHAiOjE2NzY5Mzc2ODcsImp0aSI6Ik95N0RaenVhXzBYbDhEaFNRXzVONzFxeHFBcllLdEI3OUdmRkVGQVFaUkUiLCJhdXRob3JpemF0aW9uX2VuZHBvaW50IjoiaHR0cHM6Ly9zZWN1cmVkY29udHJvbHMubmV0L2Nvbm5lY3QvYXV0aG9yaXplIiwidG9rZW5fZW5kcG9pbnQiOiJodHRwczovL3NlY3VyZWRjb250cm9scy5uZXQvY29ubmVjdC90b2tlbiIsInJlZ2lzdHJhdGlvbl9lbmRwb2ludCI6Imh0dHBzOi8vc2VjdXJlZGNvbnRyb2xzLm5ldC9jb25uZWN0L3JlZ2lzdGVyIn0.Y9qWVQFs9HXWipN8YDrH7gf89FoA0V7f3p9vqc6bPuqrcI0B6wgqZ2ZC3FYi46nGvpe6G_H20edXYR7zIHqcXqhtjfYNmCYoH-ceVwvq6kCAm0c4v8BXN23SM1Eh72_481Bbf7PidHUzcAIOn7fJ9DAk-LiVsT9aa7TD2Aj11cLC5ZiuoHyLCOaf6sjK-yX707ov313TEQREgLbSnl-YTwbIgmm_h3fW4eSZH2eszdr3a3Q8BWKKVBphWos5TvQ77WsYfTt60JfFHEXO8Psq7n4bGm2ZcNApzoa9PIuimmzeN8vjyaLBu7lDi93cc9jKphYz3KpLh_-8ruHF2HqmNw"
}

</details> <br/>

UDAP Resource Server Examples

• FhirLabsApi example project

• FhirLabs Published

• FhirLabs UdapEd Tool | Discovery | Registration | B2B | Patient Match | National Directory

• FHIR® is the registered trademark of HL7 and is used with the permission of HL7. Use of the FHIR trademark does not constitute endorsement of the contents of this repository by HL7.

• UDAP® and the UDAP gear logo, ecosystem gears, and green lock designs are trademarks of UDAP.org. UDAP Draft Specifications are referenced and displayed in parts of this source code to document specification implementation.