Relative redirect URLs are now normalized before validation. Paths
containing backslashes (including percent-encoded %5c) are rejected,
closing a bypass where /../\evil.com passed checks but http.Redirect
normalized to /\evil.com.
Reported by Fushuling and RacerZ.
Signed-off-by: Bryan Frimin <bryan@probo.com>
SafeRedirect previously matched against a single static host string,
so OIDC callbacks always fell back to the console instead of
redirecting back to compliance pages on custom domains. Refactor
AllowedHost into a dynamic AllowedHostFunc and wire a trust-service
lookup into the connect handler so custom domain hosts are accepted.
Signed-off-by: Bryan Frimin <bryan@getprobo.com>
