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refactor: 简化Markdown白名单构建

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This commit is contained in:
sunlei 2026-06-05 16:21:25 +08:00
parent add0dc3a8c
commit f74bd14c34
2 changed files with 65 additions and 33 deletions
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72
src/common/services/markdown.service.ts
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@ -24,6 +24,34 @@ const MARKDOWN_SOURCE_PATTERN =
/<!--\s*kt-markdown-source:([A-Za-z0-9+/=]+)\s*-->/; /<!--\s*kt-markdown-source:([A-Za-z0-9+/=]+)\s*-->/;
const CONTENT_CLASS_PATTERN = const CONTENT_CLASS_PATTERN =
/^(kt-md-|wp-|align|size-|is-|has-|language-|attachment-)/; /^(kt-md-|wp-|align|size-|is-|has-|language-|attachment-)/;
const CONTENT_CLASS_ATTRIBUTE = ['className', CONTENT_CLASS_PATTERN];
const EXTRA_TAG_NAMES = ['figcaption', 'figure'];
const CONTENT_CLASS_TAG_NAMES = [
'a',
'blockquote',
'code',
'div',
'figcaption',
'figure',
'h1',
'h2',
'h3',
'h4',
'h5',
'h6',
'li',
'ol',
'p',
'pre',
'span',
'table',
'tbody',
'td',
'th',
'thead',
'tr',
'ul',
];
@Injectable() @Injectable()
export class MarkdownService { export class MarkdownService {
@ -185,49 +213,27 @@ export class MarkdownService {
private createSanitizeSchema(defaultSchema: unknown) { private createSanitizeSchema(defaultSchema: unknown) {
const schema = defaultSchema as Record<string, any>; const schema = defaultSchema as Record<string, any>;
const attributes = schema.attributes || {}; const attributes = (schema.attributes || {}) as Record<string, any[]>;
const classNameAttribute = ['className', CONTENT_CLASS_PATTERN]; const classAttributes = Object.fromEntries(
CONTENT_CLASS_TAG_NAMES.map((tagName) => [
tagName,
[...(attributes[tagName] || []), CONTENT_CLASS_ATTRIBUTE],
]),
);
return { return {
...schema, ...schema,
tagNames: [ tagNames: [
...new Set([ ...new Set([
...(schema.tagNames || []), ...(schema.tagNames || []),
'figcaption', ...EXTRA_TAG_NAMES,
'figure',
]), ]),
], ],
attributes: { attributes: {
...attributes, ...attributes,
a: [...(attributes.a || []), 'target', 'rel', classNameAttribute], ...classAttributes,
blockquote: [...(attributes.blockquote || []), classNameAttribute], a: [...(attributes.a || []), 'target', 'rel', CONTENT_CLASS_ATTRIBUTE],
code: [...(attributes.code || []), classNameAttribute], img: [...(attributes.img || []), 'loading', CONTENT_CLASS_ATTRIBUTE],
div: [...(attributes.div || []), classNameAttribute],
figcaption: [...(attributes.figcaption || []), classNameAttribute],
figure: [...(attributes.figure || []), classNameAttribute],
h1: [...(attributes.h1 || []), classNameAttribute],
h2: [...(attributes.h2 || []), classNameAttribute],
h3: [...(attributes.h3 || []), classNameAttribute],
h4: [...(attributes.h4 || []), classNameAttribute],
h5: [...(attributes.h5 || []), classNameAttribute],
h6: [...(attributes.h6 || []), classNameAttribute],
img: [
...(attributes.img || []),
'loading',
classNameAttribute,
],
li: [...(attributes.li || []), classNameAttribute],
ol: [...(attributes.ol || []), classNameAttribute],
p: [...(attributes.p || []), classNameAttribute],
pre: [...(attributes.pre || []), classNameAttribute],
span: [...(attributes.span || []), classNameAttribute],
table: [...(attributes.table || []), classNameAttribute],
tbody: [...(attributes.tbody || []), classNameAttribute],
td: [...(attributes.td || []), classNameAttribute],
th: [...(attributes.th || []), classNameAttribute],
thead: [...(attributes.thead || []), classNameAttribute],
tr: [...(attributes.tr || []), classNameAttribute],
ul: [...(attributes.ul || []), classNameAttribute],
}, },
}; };
} }

26
test/common/markdown.service.spec.ts
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@ -35,4 +35,30 @@ describe('MarkdownService', () => {
expect(html).not.toContain('onclick'); expect(html).not.toContain('onclick');
expect(html).not.toContain('<script>'); expect(html).not.toContain('<script>');
}); });
it('builds sanitizer schema for content classes and image loading', () => {
const schema = (service as any).createSanitizeSchema({
attributes: {
a: ['href'],
img: ['src'],
},
tagNames: ['p'],
});
expect(schema.tagNames).toEqual(['p', 'figcaption', 'figure']);
expect(schema.attributes.a).toEqual([
'href',
'target',
'rel',
['className', /^(kt-md-|wp-|align|size-|is-|has-|language-|attachment-)/],
]);
expect(schema.attributes.figure).toEqual([
['className', /^(kt-md-|wp-|align|size-|is-|has-|language-|attachment-)/],
]);
expect(schema.attributes.img).toEqual([
'src',
'loading',
['className', /^(kt-md-|wp-|align|size-|is-|has-|language-|attachment-)/],
]);
});
}); });