* fix(mcp): stop assuming http://localhost:7000 for the OAuth callback
The MCP OAuth callback origin is wrong on any install not reached at
http://localhost:7000, and on Docker it cannot be corrected at all.
Three sites, one assumption:
- The redirect base fell back to a fixed port 7000. The app binds APP_PORT
natively (app.py, launcher.py) and the macOS launcher defaults to 7860,
where 7000 is AirPlay Receiver, so the callback lands on another service
entirely. The fallback now follows APP_PORT. The hostname stays localhost
rather than internal_api_base()'s 127.0.0.1: this URI is registered with
the authorization server, so changing the host would invalidate the
registrations that already exist.
- The paste-back form hardcoded an http:// action. Serving the page over
HTTPS, Chrome raises its insecure-form interstitial, and overriding that
posts plain HTTP at a TLS port, which fails too. Either way the
authorization code never reaches Odysseus. The action now carries the
scheme the request arrived on.
- OAUTH_REDIRECT_BASE_URL is the only fix available to a Docker install,
because the container listens on 7000 and cannot see the host port map,
but compose never forwarded it and nothing documented it. Both fixed.
* fix(mcp): make the paste-back form action relative and export APP_PORT
Answers the review on #6032. Three of the fixes did not survive contact with
the deployments they targeted.
- The form action derived its scheme from request.url.scheme. uvicorn only
honours X-Forwarded-Proto from a peer inside --forwarded-allow-ips, which
defaults to 127.0.0.1; the Dockerfile CMD sets no override, so a proxy
arriving over the Docker bridge is untrusted and the scheme stays http.
That is mixed content on exactly the HTTPS installs paste-back exists for.
A relative action is resolved by the browser against the origin the page
came from, which is right under every proxy setup, and it drops the Host
header from the page entirely.
- The APP_PORT fallback never fired for the shipped launchers. start-macos.sh,
the generated .app launcher and launch-windows.ps1 all pass --port to
uvicorn without putting the value in the environment, so the motivating
case, macOS on 7860, still registered localhost:7000. Each now exports it.
internal_api_base() and companion pairing read APP_PORT too and were wrong
in the same way.
- .env.example pointed Google MCP servers at OAUTH_REDIRECT_BASE_URL.
add_server writes Desktop App credentials, and Google only accepts loopback
redirects for that client type, so a public origin comes back as
redirect_uri_mismatch. The variable is for the DCR flow; Google stays on the
loopback default and finishes remotely through paste-back.
The Host header is no longer reflected into the page, so the escaping
regression test asserts its absence instead of its escaping.
Find-GitBash accepted the Microsoft Store / WSL bash.exe alias and only probed <root>\Git, so it never detected per-user Git for Windows installs under %LocalAppData%\Programs\Git and could skip the launcher's "install Git Bash" note even when no usable Git Bash was present.
Reject the WSL stub (system32/sysnative/windowsapps) and also probe %LocalAppData%\Programs\Git, mirroring core/platform_compat.find_bash.
Refs #3740
Léo