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-- ====================================================================
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-- 0073_anon_rechte_minimal — anon nur noch dort, wo die Karte liest
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-- ====================================================================
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-- Sicherheitsplan M22 (24.10.2026). Supabase vergibt über seine
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-- Default-Privileges jeder neuen Tabelle volle Rechte an anon (inkl.
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-- TRUNCATE, das RLS nicht erfasst). RLS hat das bisher abgefangen; jetzt
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-- werden die Rechte selbst abgebaut. Öffentlich gelesen werden nur
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-- employees, persons und site_settings — dort gelten weiter die
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-- Spalten-Grants aus 0014/0045 ff. (ohne Geheimnis-Spalten).
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--
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-- Bewusst KEIN "revoke ... on all tables in schema public" und KEIN
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-- "alter default privileges": Auf gemeinsam genutzten Datenbanken (etwa
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-- supabase.stwhas.de) liegen fremde Tabellen derselben Eigentümerrolle im
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-- Schema public; deren Rechte dürfen sich nicht ändern. Deshalb eine
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-- ausdrückliche Liste der TeamVis-Tabellen. Neue Tabellen nehmen anon die
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-- Rechte in ihrer eigenen Migration (siehe 0060, 0072 und CLAUDE.md).
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--
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-- Ebenfalls entfernt: die Policies admin_write und public_read auf employees (ALL für
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-- authenticated, true). Sie stammt aus keiner TeamVis-Migration — TeamVis
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-- nutzt keine Supabase-Auth —, lag aber auf einer Bestandsinstanz und hätte
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-- jedem Inhaber eines authenticated-JWT Schreibzugriff gegeben.
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do $$
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declare t text;
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begin
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foreach t in array array[
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'admin_invites',
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'admin_users',
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'appointment_requests',
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'bookings',
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'calendar_connections',
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'card_leads',
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'card_view_log',
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'change_log',
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'compliance_role_bindings',
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'deputies',
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'external_parties',
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'job_description_blocks',
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'job_description_versions',
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'job_descriptions',
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'locations',
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'magic_link_tokens',
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'org_units',
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'organigram_versions',
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'portal_api_tokens',
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'position_assignments',
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'positions',
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'push_preferences',
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'push_subscriptions',
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'reception_kiosks',
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'reception_visit_audit',
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'service_relations',
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'teamvis_schema_migrations',
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'trusted_access_log',
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'visitor_preregistrations',
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'wallet_pass_registrations',
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'webhook_deliveries',
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'webhook_subscriptions'
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] loop
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if to_regclass('public.' || t) is not null then
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execute format('revoke all on table public.%I from anon', t);
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end if;
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end loop;
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end $$;
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drop policy if exists admin_write on public.employees;
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-- authenticated: dieselben engen Rechte wie anon. TeamVis nutzt keine
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-- Supabase-Auth; auf gemeinsam genutzten Datenbanken kann es aber Inhaber
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-- eines authenticated-JWT geben. Übrige Tabellen: keine Rechte; die drei
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-- Kartentabellen: genau die Lesespalten, die anon hat.
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do $$
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declare t text; cols text;
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begin
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foreach t in array array[
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'admin_invites', 'admin_users', 'appointment_requests', 'bookings',
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'calendar_connections', 'card_leads', 'card_view_log', 'change_log',
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'compliance_role_bindings', 'deputies', 'external_parties',
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'job_description_blocks', 'job_description_versions', 'job_descriptions',
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'locations', 'magic_link_tokens', 'org_units', 'organigram_versions',
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'portal_api_tokens', 'position_assignments', 'positions',
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'push_preferences', 'push_subscriptions', 'reception_kiosks',
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'reception_visit_audit', 'service_relations', 'teamvis_schema_migrations',
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'trusted_access_log', 'visitor_preregistrations',
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'wallet_pass_registrations', 'webhook_deliveries', 'webhook_subscriptions'
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] loop
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if to_regclass('public.' || t) is not null then
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execute format('revoke all on table public.%I from authenticated', t);
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end if;
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end loop;
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foreach t in array array['employees', 'persons', 'site_settings'] loop
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if to_regclass('public.' || t) is null then continue; end if;
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select string_agg(quote_ident(column_name), ', ' order by column_name) into cols
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from information_schema.column_privileges
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where table_schema = 'public' and table_name = t
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and grantee = 'anon' and privilege_type = 'SELECT';
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execute format('revoke all on table public.%I from authenticated', t);
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if cols is not null then
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execute format('grant select (%s) on public.%I to authenticated', cols, t);
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end if;
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end loop;
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end $$;
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-- Ebenfalls nicht aus TeamVis: Policy public_read (Rolle public, aktive
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-- Karten). Für anon gilt public_read_active_employees (0001/0014).
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drop policy if exists public_read on public.employees;
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do $$
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begin
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if to_regclass('public.teamvis_schema_migrations') is not null then
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alter table public.teamvis_schema_migrations enable row level security;
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revoke all on table public.teamvis_schema_migrations from anon;
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end if;
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end $$;
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TeamVis Release