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https://github.com/adrianbrs/nest-oidc-provider

oidc-provider module for Nest framework (node.js)
https://github.com/adrianbrs/nest-oidc-provider

nest nestjs oauth2 openid openid-connect openid-provider provider server

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oidc-provider module for Nest framework (node.js)

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# nest-oidc-provider

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## Description

[oidc-provider](https://github.com/panva/node-oidc-provider) module for [Nest](https://github.com/nestjs/nest) framework (node.js)

## Installation

```bash
$ npm i --save nest-oidc-provider oidc-provider
```

OR

```bash
$ yarn add nest-oidc-provider oidc-provider
```

OR

```bash
$ pnpm add nest-oidc-provider oidc-provider
```

## Setup

> ⚠️ Version 8 of `oidc-provider` [is now ESM-only](), which is not yet supported by NestJS natively ([nest#7021](https://github.com/nestjs/nest/issues/7021), [nest#8736](https://github.com/nestjs/nest/pull/8736)). This library enables the use of the ESM-only version of `oidc-provider` for Node.js <= 20.17.x via dynamic imports. To avoid errors like [ERR_REQUIRE_ESM], all interfaces should be imported from this package, and the module should be accessed through dependency injection. Use `@InjectOidcModule()` to inject the `oidc-provider` module and `@InjectOidcProvider()` for the running instance. **You must not import anything directly from** `oidc-provider`, unless you're using Node.js >= 20.17.x with the experimental `--experimental-require-module` flag ([#54447](https://github.com/nodejs/node/pull/54447))!

### TypeScript

You need to install the `oidc-provider` @types package if you want to use the re-exported types from this library.

```bash
npm install @types/oidc-provider --save-dev
```

### Basic configuration

```ts
@Module({
imports: [
OidcModule.forRoot({
issuer: 'http://localhost:3000',
path: '/oidc',
oidc: ... // oidc-provider configuration
})
],
})
export class AppModule {}
```

### Custom factory function

You can pass a `factory` function to customize the provider instantiation.

```ts
@Module({
imports: [
OidcModule.forRoot({
issuer: 'http://localhost:3000',
path: '/oidc',
factory: ({ issuer, config, module }) => {
// `module` is the import from `oidc-provider`
const provider = new module.Provider(issuer, config);
provider.on('server_error', (ctx, err) => {...})
return provider;
},
oidc: ... // oidc-provider configuration
})
],
})
export class AppModule {}
```

### Trusting TLS offloading proxies

You can set the `proxy` option to `true` to trust TLS offloading proxies.\
For more info visit the `oidc-provider` documentation: [Trusting TLS offloading proxies](https://github.com/panva/node-oidc-provider/blob/v7.12.0/docs/README.md#trusting-tls-offloading-proxies)

```ts
@Module({
imports: [
OidcModule.forRoot({
issuer: 'http://localhost:3000',
path: '/oidc',
proxy: true, // <= trust TLS offloading proxies
oidc: {...}
})
],
})
export class AppModule {}
```

### Async configuration

#### `useFactory`

```ts
@Module({
imports: [
OidcModule.forRootAsync({
imports: [ConfigModule],
useFactory: async (configService: ConfigService) => ({
issuer: configService.get('ISSUER'),
path: configService.get('OIDC_PATH'),
oidc: ... // oidc-provider configuration
}),
inject: [ConfigService],
}),
],
})
export class AppModule {}
```

#### `useClass`

```ts
@Module({
imports: [
OidcModule.forRootAsync({
useClass: OidcConfigService,
}),
],
})
export class AppModule {}
```

Note that in this example, the `OidcConfigService` has to implement the `OidcModuleOptionsFactory` interface, as shown below.

```ts
import type { OidcModuleOptionsFactory } from 'nest-oidc-provider';

@Injectable()
export class OidcConfigService implements OidcModuleOptionsFactory {
constructor(private readonly @InjectConnection() conn: Connection) {}

createModuleOptions(): OidcModuleOptions {
return {
issuer: 'http://localhost:3001',
path: '/oidc',
oidc: ..., // oidc-provider configuration
};
}

createAdapterFactory?(): AdapterFactory {
return (modelName: string) => new MyAdapter(modelName, this.conn);
}
}
```

You can omit the `Adapter` option of oidc-provider configuration if you implement the `createAdapterFactory` method.

#### `useExisting`

```ts
@Module({
imports: [
OidcModule.forRootAsync({
imports: [OidcConfigModule],
useExisting: OidcConfigService,
}),
],
})
export class AppModule {}
```

## Custom injection decorators

To be able to access the exports of the `oidc-provider` module or the running instance, you need to use decorators or injection tokens:

```ts
import {
InjectOidcModule,
InjectOidcProvider,
type Provider,
type ProviderModule,
} from 'nest-oidc-provider';

@Controller('/some-controller')
export class SomeController {
constructor(
/** Returns exports from the `oidc-provider` module */
@InjectOidcModule() oidc: ProviderModule,
/** Returns the running `oidc-provider` instance */
@InjectOidcProvider() provider: Provider,
) {}
}
```

OR

```ts
import {
OIDC_PROVIDER,
OIDC_PROVIDER_MODULE,
type Provider,
type ProviderModule,
} from 'nest-oidc-provider';

async function bootstrap() {
const app = await NestFactory.create(AppModule);

const { Provider, errors, interactionPolicy } =
app.get(OIDC_PROVIDER_MODULE);
const provider = app.get(OIDC_PROVIDER);

await app.listen(3000);
}
```

## Custom param decorators

### `@OidcInteraction()`

Returns an instance of `InteractionHelper` class.

```ts
import { OidcInteraction, type InteractionHelper } from 'nest-oidc-provider';

@Get(':uid')
@Render('login')
async login(
@OidcInteraction() interaction: InteractionHelper
) {
const { prompt, params, uid } = await interaction.details();

const client = await this.provider.Client.find(params.client_id as string);

return { prompt, client, params, uid, ...};
}
```

The `InteractionHelper` class is just a helper that omits the `req` and `res` parameters from the existing interaction methods in `oidc-provider`.

```ts
interface InteractionHelper {
details(): Promise;

finished(
result: InteractionResults,
options?: { mergeWithLastSubmission?: boolean },
): Promise;

result(
result: InteractionResults,
options?: { mergeWithLastSubmission?: boolean },
): Promise;
}
```

### `@OidcContext()`

Returns an instance of `KoaContextWithOIDC`.

```ts
import { OidcContext, type KoaContextWithOIDC } from 'nest-oidc-provider';

@Get()
async index(@OidcContext() ctx: KoaContextWithOIDC) {
const { oidc: { provider } } = ctx;
const session = await provider.Session.get(ctx);
//...
}
```

### `@OidcSession()`

Returns the user `Session` from the current context, equivalent to retrieving the session from `KoaContextWithOIDC`.

```ts
import { OidcSession, type Session } from 'nest-oidc-provider';

@Get()
async index(@OidcSession() session: Session) {
//...
}
```

## Examples

A complete example can be found in the [example](example) directory.

## Contributing

You are welcome to contribute to this project, just open a PR.

## CHANGELOG

See [CHANGELOG](CHANGELOG.md) for more information.

## License

This project is [MIT licensed](LICENSE).