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A refusal raised by a database guard is shown to anyone, so its words must be written for anyone #2557

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scout/forge:scout/723-a-refusal-raised-by-a-database-guard-is → main 3 commits fork 7 threads · 7 unresolved

  • Merged. scout/723-a-refusal-raised-by-a-database-guard-is was merged into main as 764eb47.

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11 files changed +145 −19
README.md +11
@@ -1515,3 +1515,14 @@ Not done: the SVG route is unchanged and still the card's source of truth; the
15151515 rasterizer runs on the main thread (about 100 ms once per distinct card).
15161516
15171517 Every read of a flag is counted in memory by UTC day and variant (on or off) and written in one batch every ten seconds and at exit, so a request runs no extra query. Beside each flag, Settings → Flags shows its reads per variant for the last 7 and 30 days. When one variant leads, "Make on/off the default" sets the flag to that value for everyone (user, role and percentage rules are cleared), and opens an issue on the forge's repository asking the crew to remove the losing path and the flag; if the issue cannot be opened, the flag is left as it was. The button shows only when the 30-day leader has at least 50 reads in all, the variants are not tied, and the flag's forge value is not already the leader. In the terminal the Flags screen shows the same `Uses, 7 days / 30 days` line for the flag under the cursor, and `w` does the same as the button (same admin, non-agent gate). Counts are of reads, not of people.
1518
1519 ## Writing a database guard
1520
1521 A trigger's `RAISE(ABORT, '…')` is answered as a 403 to every caller,
1522 anonymous ones included. Start the message with `forge: ` and write it for
1523 anyone: that is what is shown, verbatim. Any other message is answered with
1524 `refused` and logged in full (`refused by the database`, `reason=…`) for the
1525 operator. (The three guards of migrations 62, 70 and 81 predate the prefix and
1526 are known by name in `src/http/refusal.ts`.) The terminal's toasts follow the
1527 same rule. A guard installed by hand without the prefix answers `refused`
1528 until it is re-created with `forge: ` in front of its message.
src/core/migrations/0062-only-an-agent-is-ever.ts +3
@@ -4,6 +4,9 @@
44 // check (`REPO_WRITABLE`'s crew clause) and `onCrew` can never drift.
55 // A person already there is reported at boot (`peopleOnCrews`), never
66 // removed by a migration.
outdated

The new comment is joined onto the end of the existing line (migration.// The RAISE). Start it on its own // line.

7 // The RAISE messages below are shown to any caller, anonymous ones included
8 // (#723); they are written for anyone, and are known by name in
9 // src/http/refusal.ts because the numbered migrations' text is frozen.
710 export default `
811 CREATE TRIGGER repo_crew_agents_only BEFORE INSERT ON repo_crew
912 WHEN NOT EXISTS (SELECT 1 FROM user WHERE id = NEW.user_id AND is_agent = 1)
src/core/migrations/0070-a-sealed-repository-is-never.ts +3
@@ -1,6 +1,9 @@
11 // 70 — a sealed repository is never public, said by the database (#865's
22 // review): the rule lived in `updateRepoSettings`; these triggers hold
33 // it for every writer of `repo.visibility`, now and later.
outdated

Same here: the comment is joined onto the previous line. Put it on its own line.

4 // The RAISE messages below are shown to any caller, anonymous ones included
5 // (#723); they are written for anyone, and are known by name in
6 // src/http/refusal.ts because the numbered migrations' text is frozen.
47 export default `
58 CREATE TRIGGER repo_sealed_never_public BEFORE UPDATE OF visibility, sealed_for ON repo
69 WHEN NEW.sealed_for IS NOT NULL AND NEW.visibility = 'public'
src/core/migrations/0081-thoughts.ts +3
@@ -2,6 +2,9 @@
22 // row per thought, appended and never changed: the triggers refuse an
33 // UPDATE or DELETE, and there is no foreign key so no cascade can remove
44 // one when an account goes. The author is an id, not a reference.
outdated

Same here: the comment is joined onto the previous line. Put it on its own line.

5 // The RAISE messages below are shown to any caller, anonymous ones included
6 // (#723); they are written for anyone, and are known by name in
7 // src/http/refusal.ts because the numbered migrations' text is frozen.
58 export default `
69 CREATE TABLE thought (
710 id TEXT PRIMARY KEY,
src/http/refusal.ts added +51
@@ -0,0 +1,51 @@
1 /**
2 * What a database guard's refusal may say to the caller (#723). A trigger's
3 * `RAISE(ABORT, '…')` message is answered to anyone, anonymous callers
4 * included, so only a message that opts in is shown: it starts with
5 * `forge: ` and is written for anyone. Any other message is answered with a
6 * generic text and logged in full for the operator.
7 */
8
9 /** The prefix a guard puts on a message that is meant for the person refused. */
10 export const REFUSAL_PREFIX = "forge: ";
11
12 /** What a caller is told when a guard's message did not opt in. */
13 export const GENERIC_REFUSAL = "refused";
14
15 /**
16 * The messages this repository's own triggers (migrations 62, 70, 81) raised
17 * before the prefix existed. A migration is never rewritten once it has run,
18 * so these stay as written and are known by name.
19 */
20 const BUILT_IN = new Set([
21 "only an agent can be on a crew",
22 "a sealed repository is never public",
23 "a thought is never changed",
24 "a thought is never deleted",
25 ]);
26
27 /** The words to show for a guard's message: its own, or the generic text. */
28 export function shownRefusal(message: string): string {

This is the right rule, but only the HTTP door applies it. The tui prints thrown error.message raw (src/tui/app/app.ts:473, src/tui/screens/common.ts:999). Export one helper from here, e.g. refusalText(error) covering the SQLITE_CONSTRAINT_TRIGGER check and shownRefusal, and use it in both failure() and the tui toasts.

29 return message.startsWith(REFUSAL_PREFIX) || BUILT_IN.has(message)
30 ? message
31 : GENERIC_REFUSAL;
32 }
33
34 /**
35 * The original message of a refusal a database trigger raised
36 * (`RAISE(ABORT, '…')`), or undefined for any other error.
37 */
38 export function refusedByDatabase(error: unknown): string | undefined {
39 if (!(error instanceof Error)) return undefined;
40 const code = (error as { code?: unknown }).code;
41 return code === "SQLITE_CONSTRAINT_TRIGGER" ? error.message : undefined;
42 }
43
44 /**
45 * The words to show for a thrown error if a database trigger refused, else
46 * undefined: the one door both the page and the terminal answer through.
47 */
48 export function refusalText(error: unknown): string | undefined {
49 const refused = refusedByDatabase(error);
50 return refused === undefined ? undefined : shownRefusal(refused);
51 }
src/http/server.ts +6 −14
@@ -5,6 +5,7 @@
55 * verdict. Auth is resolved once per request and handed to handlers as data.
66 */
77
8 import { refusedByDatabase, shownRefusal } from "./refusal.ts";
89 import { NOT_A_MEMBER } from "../core/roles.ts";
910 import { signupOptions, signupPasskey } from "../web/pages/signup-passkey.ts";
1011 import { toolbarComment, toolbarPage } from "../web/studio/toolbar.ts";
@@ -1857,25 +1858,16 @@ export interface Servers {
18571858 }
18581859
18591860 /**
1860 * A refusal a database trigger raised (`RAISE(ABORT, '…')`): an operator's
1861 * guard saying no, in its own words. It is the answer, not a fault, so the
1862 * person sees the reason and a 403 rather than "internal".
1863 */
1864 function refusedByDatabase(error: unknown): string | undefined {
1865 if (!(error instanceof Error)) return undefined;
1866 const code = (error as { code?: unknown }).code;
1867 return code === "SQLITE_CONSTRAINT_TRIGGER" ? error.message : undefined;
1868 }
1869
1870 /**
1871 * What a thrown handler is answered with: the guard's own words and a 403
1861 * What a thrown handler is answered with: the guard's words (or a generic
1862 * "refused") and a 403
18721863 * when a database trigger refused, else a 500 that says nothing of the fault.
18731864 */
18741865 function failure(app: App, error: unknown): Response {
18751866 const refused = refusedByDatabase(error);
18761867 if (refused !== undefined) {
1877 app.log.warn("refused by the database", { reason: refused });
1878 return securityFloor(json({ error: "refused", message: refused }, 403));
1868 const shown = shownRefusal(refused);
1869 app.log.warn("refused by the database", { reason: refused, shown });
1870 return securityFloor(json({ error: "refused", message: shown }, 403));
18791871 }
18801872 app.log.error("unhandled request error", { error: String(error) });
18811873 return securityFloor(json({ error: "internal" }, 500));
src/tui/app/app.ts +3 −2
@@ -63,6 +63,7 @@ import {
6363 type CursorPos,
6464 } from "../ui/widgets.ts";
6565 import { binding, find, keyFor, type Binding } from "./keys.ts";
66 import { message } from "../screens/common.ts";
6667 import { Palette, type Command, type PaletteSearch } from "./palette.ts";
6768 import { truncate } from "../term/width.ts";
6869
@@ -470,7 +471,7 @@ export class App {
470471 // Every failure becomes a toast; nothing throws into the loop, and no
471472 // single bad read may drop the session.
472473 if (!entry.abort.signal.aborted)
473 this.toast(e instanceof Error ? e.message : String(e), "danger");
474 this.toast(message(e), "danger");
474475 })
475476 .finally(() => {
476477 entry.loading = false;
@@ -876,7 +877,7 @@ export class App {
876877 private run(command: Command): void {
877878 this.overlay = "none";
878879 void Promise.resolve(command.run()).catch((err: unknown) =>
879 this.toast(err instanceof Error ? err.message : String(err), "danger"),
880 this.toast(message(err), "danger"),
880881 );
881882 }
882883
src/tui/screens/common.ts +3
@@ -7,6 +7,7 @@
77 * of them. Nothing here knows about repos or issues — that is the point.
88 */
99
10 import { refusalText } from "../../http/refusal.ts";

Low (layering): the terminal now depends on src/http/refusal.ts. Nothing in refusal.ts is about HTTP, so it belongs in src/core/ (for example src/core/refusal.ts), where both doors can import it without the TUI reaching into the HTTP layer.

1011 import { NOT_A_MEMBER } from "../../core/roles.ts";
1112 import type { Ctx, Screen } from "../app/app.ts";
1213 import { binding, type Binding } from "../app/keys.ts";
@@ -996,6 +997,8 @@ export function errorText(code: string): string {
996997
997998 /** Anything thrown, as a string — the toast text of last resort. */
998999 export function message(error: unknown): string {
1000 const refused = refusalText(error);
1001 if (refused !== undefined) return refused;
9991002 return error instanceof Error ? error.message : String(error);
10001003 }
10011004
test/accounts.test.ts +36 −2
@@ -598,7 +598,7 @@ describe("accounts: the owner sees, suspends and removes", () => {
598598 test("a refusal the database raises answers 403 with its reason, not 500", async () => {
599599 // An operator's guard, the way production holds new accounts back.
600600 app.db.exec(
601 "CREATE TRIGGER test_refuse BEFORE INSERT ON repo BEGIN SELECT RAISE(ABORT, 'new repositories are paused here'); END;",
601 "CREATE TRIGGER test_refuse BEFORE INSERT ON repo BEGIN SELECT RAISE(ABORT, 'forge: new repositories are paused here'); END;",
602602 );
603603 try {
604604 const res = await api("/api/v1/repos", {
@@ -609,7 +609,7 @@ describe("accounts: the owner sees, suspends and removes", () => {
609609 expect(res.status).toBe(403);
610610 expect(await res.json()).toEqual({
611611 error: "refused",
612 message: "new repositories are paused here",
612 message: "forge: new repositories are paused here",
613613 });
614614 // The refusal leaves nothing on disk.
615615 expect(existsSync(repoDir(app.reposRoot, "olive", "guarded"))).toBe(false);
@@ -618,6 +618,40 @@ describe("accounts: the owner sees, suspends and removes", () => {
618618 }
619619 });
620620
621 test("a refusal without the forge: prefix is answered generically to anyone, and logged in full (#723)", async () => {
622 const secret = "constraint on table repo_internal_x failed";
623 app.db.exec(
624 `CREATE TRIGGER test_refuse_plain BEFORE INSERT ON repo BEGIN SELECT RAISE(ABORT, '${secret}'); END;`,
625 );
626 const logged: { message: string; fields: Record<string, unknown> | undefined }[] = [];
627 const log = app.log;
628 (app as { log: typeof log }).log = {
629 ...log,
630 warn: (message, fields) => {
631 logged.push({ message, fields });
632 log.warn(message, fields);
633 },
634 };
635 try {
636 const res = await api("/api/v1/repos", {
637 method: "POST",
638 token: ownerToken,

Low: #723's criterion says the generic text is shown "to an anonymous caller". This test uses the owner's token. The rule doesn't depend on who calls, so it holds, but either rename the test or add one sentence saying that.

639 body: JSON.stringify({ name: "guarded-plain" }),
640 });
641 expect(res.status).toBe(403);
642 expect(await res.json()).toEqual({
643 error: "refused",
644 message: "refused",
645 });
646 expect(
647 logged.some((l) => l.fields?.reason === secret),
648 ).toBe(true);
649 } finally {
650 (app as { log: typeof log }).log = log;
651 app.db.exec("DROP TRIGGER test_refuse_plain");
652 }
653 });
654
621655 test("the owner can verify a newcomer's email, and it can create at once", async () => {
622656 // Made first: the helper proves every account waiting on a link.
623657 const { token: other } = await outsider("mallet");
test/refusal.test.ts added +25
@@ -0,0 +1,25 @@
1 import { expect, test } from "bun:test";
2 import { GENERIC_REFUSAL, refusalText, shownRefusal } from "../src/http/refusal.ts";
3 import { message } from "../src/tui/screens/common.ts";
4
5 test("only a prefixed or built-in guard message is shown (#723)", () => {
6 expect(shownRefusal("forge: paused for new accounts")).toBe(
7 "forge: paused for new accounts",
8 );
9 expect(shownRefusal("a thought is never changed")).toBe(
10 "a thought is never changed",
11 );
12 expect(shownRefusal("UNIQUE failed: secret_table.col")).toBe(GENERIC_REFUSAL);
13 expect(shownRefusal("Forge: wrong case")).toBe(GENERIC_REFUSAL);
14 });
15
16 test("a terminal action that hits a guard shows the shown text, not the trigger's (#723)", () => {
17 const trigger = (text: string) =>
18 Object.assign(new Error(text), { code: "SQLITE_CONSTRAINT_TRIGGER" });
19 expect(message(trigger("secret_table.col is internal"))).toBe("refused");
20 expect(message(trigger("forge: paused for new accounts"))).toBe(
21 "forge: paused for new accounts",
22 );
23 expect(message(new Error("plain failure"))).toBe("plain failure");
24 expect(refusalText(new Error("plain failure"))).toBeUndefined();
25 });
test/sentinel.test.ts +1 −1
@@ -159,7 +159,7 @@ describe("the faults of the day", () => {
159159 // 5. a hand-installed guard that outlived its fix.
160160 app.db.exec(
161161 `CREATE TRIGGER steward_guard_repo BEFORE INSERT ON repo
162 BEGIN SELECT RAISE(ABORT, 'paused for new accounts'); END`,
162 BEGIN SELECT RAISE(ABORT, 'forge: paused for new accounts'); END`,

Nit: this edit wasn't needed. The sentinel reads the trigger's SQL from sqlite_master, not a refusal answer, and line 184's toContain("paused for new accounts") passes either way. It's harmless, but the pull description says the old text "would now be hidden", which isn't true for this test.

163163 );
164164 });
165165

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