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garrytan
30d2904c66
evals.yml wraps collector-outcomes failures in a fixed three-backtick fence for the PR comment, so those lines (and eval:pass-rates output meant for the tracking issue) go through sanitizeFixedFenceLine: cleaned like every published line, with backticks turned into quotes. Inline published text also neutralizes backticks.
78 lines
3.3 KiB
TypeScript
78 lines
3.3 KiB
TypeScript
/**
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* The published-text sanitizer (plan 0.3): adversarial model or fixture text
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* reaching a public issue, PR comment or committed report cannot ping people,
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* break out of its fence, inject HTML or images, leak a credential, or flood.
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*/
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import { describe, expect, test } from 'bun:test';
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import { publishedFence, sanitizeFixedFenceLine, sanitizePublishedText, PUBLISHED_TEXT_MAX } from '../scripts/lib/published-text';
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// Built at runtime so this file never contains a credential-shaped literal.
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const GHP = ['ghp', '_', 'A1b2C3d4E5f6G7h8I9j0K1l2M3n4O5p6Q7r8'].join('');
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const SK = ['sk', '-ant-api03-', 'Zx9'.repeat(30)].join('');
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const ADVERSARIAL = [
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'ping @garrytan and @gstack/maintainers',
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'close ``` the fence ```` here',
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'</details><img src=x onerror=alert(1)>',
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' [click](https://evil.example)',
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`token ${GHP} and key ${SK}`,
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'bell\u0007 escape\u001b[31m bidi\u202eevil',
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];
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describe('sanitizePublishedText (inline)', () => {
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const out = ADVERSARIAL.map(line => sanitizePublishedText(line));
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test('mentions are neutralized', () => {
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expect(out[0]).not.toMatch(/@[A-Za-z]/);
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expect(out[0]).toContain('@\u200bgarrytan');
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});
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test('HTML and Markdown links or images cannot render', () => {
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expect(out[2]).not.toContain('<');
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expect(out[2]).toContain('</details>');
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expect(out[3]).not.toMatch(/!?\[[^\]]*\]\(/);
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});
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test('credential-scan patterns are redacted', () => {
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expect(out[4]).not.toContain(GHP);
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expect(out[4]).not.toContain(SK);
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});
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test('control and bidi characters are stripped', () => {
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// eslint-disable-next-line no-control-regex
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expect(out[5]).not.toMatch(/[\u0000-\u001f\u007f\u202e]/);
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});
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test('backticks cannot open a code span or close an enclosing fence', () => {
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expect(out[1]).not.toContain('`');
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});
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test('length is capped', () => {
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expect(sanitizePublishedText('x'.repeat(10 * 1024))).toHaveLength(PUBLISHED_TEXT_MAX);
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});
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});
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describe('publishedFence (blocks)', () => {
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const block = publishedFence([...ADVERSARIAL, 'y'.repeat(10 * 1024)]);
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test('the fence is longer than any backtick run inside it, so nothing closes it early', () => {
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const fence = block[0]!;
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expect(block.at(-1)).toBe(fence);
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expect(fence).toMatch(/^`{5,}$/);
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for (const line of block.slice(1, -1)) {
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for (const run of line.match(/`+/g) ?? []) expect(run.length).toBeLessThan(fence.length);
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}
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});
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test('content stays literal inside the fence but loses mentions, credentials, control characters and length', () => {
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const body = block.slice(1, -1).join('\n');
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expect(body).not.toMatch(/@[A-Za-z]/);
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expect(body).not.toContain(GHP);
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expect(body).not.toContain(SK);
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expect(body).not.toContain('\u202e');
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expect(block.at(-2)).toHaveLength(PUBLISHED_TEXT_MAX);
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expect(body).toContain('</details>');
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});
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});
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describe('sanitizeFixedFenceLine (lines a workflow wraps in a fixed fence)', () => {
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test('no backtick survives, and the rest is cleaned like every published line', () => {
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const out = ADVERSARIAL.map(line => sanitizeFixedFenceLine(line)).join('\n');
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expect(out).not.toContain('`');
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expect(out).not.toMatch(/@[A-Za-z]/);
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expect(out).not.toContain(GHP);
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expect(sanitizeFixedFenceLine('z'.repeat(10 * 1024))).toHaveLength(PUBLISHED_TEXT_MAX);
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});
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});
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