feat(auth): Allow users to attach GH profile via social auth#53767
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Piccirello
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| def sso_login(request: HttpRequest, backend: str) -> HttpResponse: | ||
| request.session.flush() |
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If I understand correctly, redirecting to /login/<backend>/ now silently links the social provider to the existing user. This is a pretty big behavior change with side effects from just visiting/being redirected to a GET url. We should show the user an explicit confirmation page, like we do during OAuth connection for ex, so that they can confirm this action.
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You're right, we should still flush by default.
For the PH Code linking case, I don't think we should have an extra confirmation screen though. But this is simple - we can only do the "link social auth provider to the existing, currently-logged-in PostHog user" thing when the connect_from arg is set.
Implemented this change, so there is no blast radius here.
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You're right, we should still flush by default.
For the PH Code linking case, I don't think we should have an extra confirmation screen though.
Can you tell me more about this case? IMO we should have an explicit confirmation dialog whenever linking a third party to an existing account.
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Pinged you in Slack which already has a bit of that context :)
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Discussed offline - the account linking will have already occurred by this point. We should still show an explicit confirmation dialog, but that's out of scope of this change.
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Apr 9, 2026
| logger.info(f"social_create_user_is_not_new") | ||
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| if not user.is_email_verified and user.password is not None: | ||
| if not user.is_email_verified: |
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It feels kinda fishy, as the social email of the user could differ from their PostHog email, but I assume if they are already authentificated it's alright.
Is it technically possible for me to create an account with bill.gates@posthog.com, and then add my GitHub, so my email will be marked confirmed? :)
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Indeed, this part is not needed or good here. I think this was left over from a slightly different approach earlier. Reverted
| def get_github_login(self, instance: User) -> Optional[str]: | ||
| # Use all() to hit the prefetch cache from get_queryset; filter in Python | ||
| for sa in instance.social_auth.all(): | ||
| if sa.provider == "github" and isinstance(sa.extra_data, dict): |
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We can't have more than one GitHub sync, right? Like, technically we can, in the DB, but not practically?
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Yeah, there's no user flow to do that. I think if you do through the GH login route with the PH Code-only connect_from param twice with two different GitHub accounts, this can technically result in two GH accounts being connected. But there isn't really a way to get into that situation, and it's not a problem, that works because it's natively supported by django-social-auth
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| def get_github_login(self, instance: User) -> Optional[str]: | ||
| # Use all() to hit the prefetch cache from get_queryset; filter in Python | ||
| for sa in instance.social_auth.all(): |
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Nit: UserSocialAuth.objects.filter(user_id="bla-bla", provider='github').values_list('extra_data__login', flat=True).first() to avoid getting blobs if we need only login?
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Yup, great point, this should be at the prefetch level. Narrowed that down
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Now with the change I described in PostHog/code#1561, we're now also fetching Integration to determine github_login - so moved this altogether to its own GET action on the user, as we only need this in PH Code
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| def sso_login(request: HttpRequest, backend: str) -> HttpResponse: | ||
| request.session.flush() |
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Discussed offline - the account linking will have already occurred by this point. We should still show an explicit confirmation dialog, but that's out of scope of this change.
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…nking - Add `github_login` field to UserSerializer, returning the GitHub username from UserSocialAuth (or null). - Allow authenticated users to link social auth accounts via /login/<backend>/ by skipping session flush when already logged in. - Preserve password when linking a social account to an existing authenticated user (previously wiped for unverified emails). Generated-By: PostHog Code Task-Id: 3089dc72-e26f-4715-8999-1a194fc7030c
Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>
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## Summary Adds a floating banner at the bottom of the inbox report list pane showing GitHub connection status. The button links to `/login/github/` to start the OAuth linking flow & refetches user data when the app window regains focus. Companion backend PR: PostHog/posthog#53767 --- *Created with [PostHog Code](https://posthog.com/code?ref=pr)*
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## Problem Unknowingly duplicated `GITHUB_APP_CLIENT_ID` as `GITHUB_APP_OAUTH_CLIENT_ID` in #53767. ## Changes `GITHUB_APP_OAUTH_CLIENT_ID` → the pre-existing `GITHUB_APP_CLIENT_ID` `GITHUB_APP_OAUTH_CLIENT_SECRET` → just `GITHUB_APP_CLIENT_SECRET` Companion: PostHog/charts#9900
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## Problem Unknowingly duplicated `GITHUB_APP_CLIENT_ID` as `GITHUB_APP_OAUTH_CLIENT_ID` in #53767. ## Changes `GITHUB_APP_OAUTH_CLIENT_ID` → the pre-existing `GITHUB_APP_CLIENT_ID` `GITHUB_APP_OAUTH_CLIENT_SECRET` → just `GITHUB_APP_CLIENT_SECRET` Companion: PostHog/charts#9900
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Problem
PostHog needs to know a mapping of PostHog user to GH user, which we can do via social auth.
Changes
Addsig
github_loginread-only field toUserSerializer, returning the GitHub username fromUserSocialAuth(ornull). Then, allowing authenticated users to link social auth accounts via/login/<backend>/by skipping session flush when already logged in. This preserves password when linking a social account to an existing authenticated user (previously wiped for unverified emails). Also, adding a new scene to neatly tell the user to go back to PH Code.EDIT: This now also reuses the info on who was the user adding the GitHub integration on the project, BUT that requires two new env vars:
GITHUB_APP_OAUTH_CLIENT_IDandGITHUB_APP_OAUTH_CLIENT_SECRET.Created with PostHog Code