410eb9612e
Make r_basicprofile opt-in via LINKEDIN_EXTRA_SCOPES so self-hosted users
unblock by default and ops with legacy/enterprise products keep working.
Why
---
LinkedIn rejects OAuth authorize requests with a generic "Bummer,
something went wrong" page when an app asks for a scope it can't grant.
`r_basicprofile` is a legacy scope deprecated in 2018; new LinkedIn dev
apps don't have it, so every self-hosted user hits the rejection
immediately on `/connect/linkedin`.
The two products LinkedIn actually grants to standard apps today are:
- Sign In with LinkedIn using OpenID Connect → `openid profile email`
- Share on LinkedIn → `w_member_social`
That set is enough for the connect flow. The only piece of data
`r_basicprofile` was buying us is `/v2/me`'s `vanityName` (pretty
`linkedin.com/in/<slug>`). `fetchVanityName()` already handles HTTP
failure gracefully (returns null), and the only downstream consumer —
`LinkedInPagePublisher`'s post-URL builder — already falls back to a
numeric `linkedin.com/feed/update/<id>` URL when `$account->username`
is null.
Backward compatibility
----------------------
Ops with legacy or enterprise LinkedIn products approved on their dev
app (so they DO have `r_basicprofile`) can opt back in via env:
LINKEDIN_EXTRA_SCOPES=r_basicprofile
`LinkedInController::resolveScopes()` merges this comma-separated list
into the default scope array. The connect flow's `Socialite::scopes()`
call then includes the legacy scope, preserving the pre-PR behaviour
end-to-end (including `vanityName` lookup).
Net effect for users without `r_basicprofile`:
- Connect flow works (was previously rejected by LinkedIn).
- Posts publish exactly the same way.
- Generated post URLs use the numeric form instead of the vanity slug.
Tests
-----
- `linkedin connect requests the default scope set when LINKEDIN_EXTRA_SCOPES is unset`
- `linkedin connect appends LINKEDIN_EXTRA_SCOPES to the default scope set`
- Existing `splits comma-separated approvedScopes` fixture updated to
match the new default set.
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