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75 lines
3.7 KiB
Markdown
75 lines
3.7 KiB
Markdown
---
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id: auth-gotrue
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title: 'Part Four: GoTrue'
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description: 'Supabase Deep Dive Part 4: Gotrue Overview'
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---
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### About
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How to restrict table access to authenticated users, row level policies, and email domain based access.
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### Watch
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<div class="video-container">
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<iframe src="https://www.youtube.com/embed/neqfYym_84k" frameBorder="1" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowFullScreen></iframe>
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</div>
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### Gotrue Server
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Gotrue is an auth API server written in Go by the Netlify team, find the Supabase fork here: https://github.com/supabase/gotrue. The list of available API endpoints is available [here](https://github.com/supabase/gotrue#endpoints).
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When you deploy a new Supabase project, we deploy a new instance of this server alongside your database, and also inject your database with the required `auth` schema.
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It makes it super easy to, for example, send magic link emails which your users can use to login:
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```bash
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# replace <project-ref> with your own project reference
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# and SUPABASE_KEY with your anon api key
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curl -X POST 'https://<project-ref>.supabase.co/auth/v1/magiclink' \
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-H "apikey: SUPABASE_KEY" \
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-H "Content-Type: application/json" \
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-d '{
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"email": "someone@email.com"
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}'
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```
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Gotrue is responsible for issuing access tokens for your users, sends confirmation, magic-link, and password recovery emails (by default we send these from a Supabase SMTP server, but you can easily plug in your own inside the dashboard at Auth > Settings) and also transacting with third party OAuth providers to get basic user data.
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The community even recently built in the functionality to request custom OAuth scopes, if your users need to interact more closely with the provider. See the scopes parameter here: [https://github.com/supabase/gotrue#get-authorize](https://github.com/supabase/gotrue#get-authorize).
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So let's say you want to send emails on behalf of a user via gmail, you might request the gmail.send scope by directing them to:
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```
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https://sjvwsaokcugktsdaxxze.supabase.co/auth/v1/authorize?provider=google&https://www.googleapis.com/auth/gmail.send
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```
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You'll have to make sure your google app is verified of course in order to request these advanced scopes.
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[Gotrue-js](https://github.com/supabase/gotrue-js) (and also [gotrue-csharp](https://github.com/supabase/gotrue-csharp), [gotrue-py](https://github.com/j0/gotrue-py), [gotrue-kt](https://github.com/supabase/gotrue-kt), and [gotrue-dart](https://github.com/supabase/gotrue-dart)) are all wrappers around the gotrue API endpoints, and make for easier session management inside your client.
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But all the functionality of gotrue-js is also available in supabase-js, which uses gotrue-js internally when you do things like:
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```jsx
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const { user, session, error } = await supabase.auth.signIn({
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email: 'example@email.com',
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password: 'example-password',
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})
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```
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If you want to request a feature, or contribute to the project directly, just head to https://github.com/supabase/gotrue and open some issues/PRs, we're always open to help.
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In the next guide we'll be looking at how to setup external OAuth providers: Watch [Part Five: Google Oauth](../../learn/auth-deep-dive/auth-google-oauth)
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### Resources
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- JWT debugger: https://jwt.io
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### Next steps
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- Watch [Part One: JWTs](../../learn/auth-deep-dive/auth-deep-dive-jwts)
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- Watch [Part Two: Row Level Security](../../learn/auth-deep-dive/auth-row-level-security)
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- Watch [Part Three: Policies](../../learn/auth-deep-dive/auth-policies)
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<!-- - Watch [Part Four: GoTrue](../../learn/auth-deep-dive/auth-gotrue) -->
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- Watch [Part Five: Google Oauth](../../learn/auth-deep-dive/auth-google-oauth)
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- Sign up for Supabase: [app.supabase.com](https://app.supabase.com)
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