fix(web): render tel: and sms: markdown links - #6341
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Markdown links using the tel: and sms: schemes lost their href because neither react-markdown's default urlTransform nor the rehype-sanitize href protocol list allowed them. Both schemes hand off to another app and cannot run script, so treat them like the already-permitted mailto:. Link previews now only trigger for http(s) targets so a bare handoff link does not attempt a metadata fetch. Fixes #6340
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Actionable comments posted: 2
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Inline comments:
In `@web/src/components/MemoContent/constants.ts`:
- Line 85: Normalize the handoff URL scheme before allowlist matching and
returning it: update the URL transformation logic around HANDOFF_LINK_PROTOCOLS
to compare scheme.toLowerCase() and return the URL with that lowercase scheme,
preserving the remainder unchanged. Add mixed-case TEL and SMS coverage.
In `@web/tests/memo-content-paragraph.test.tsx`:
- Line 36: Update collectSingleLinkHrefs to configure its test renderer with the
production memoUrlTransform, ensuring tel: and sms: links reach
getSingleLinkHref for rejection; extend the test input with an sms: case while
preserving the existing URL assertions.
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web/src/components/MemoContent/MemoMarkdownRenderer.tsxweb/src/components/MemoContent/constants.tsweb/src/components/MemoContent/markdown/Paragraph.tsxweb/tests/memo-content-paragraph.test.tsxweb/tests/memo-content-security.test.tsx
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The paragraph preview test rendered with react-markdown's default transform, which strips tel: before getSingleLinkHref runs, so the assertion passed without the http(s) gate. Use memoUrlTransform and add an sms: case so the test fails if the gate is removed.
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Great work and fast, thanks! |
3 participants
Fixes #6340
Problem
[phone me](tel:+440000000000)rendered as<a>phone me</a>with nohref. The same happened forsms:.Two independent allowlists stripped the target:
urlTransformonly acceptshttp,https,irc,ircs,mailto, andxmpp.hrefprotocol list, which has the same set.Fix
telandsmsto the sanitizer'shrefprotocols and export amemoUrlTransformthat passes those two schemes through and defers everything else todefaultUrlTransform. Both are driven by one constant so they cannot drift.ReactMarkdownin the memo renderer.http(s)targets, so a bare<tel:…>line renders as a plain link instead of attempting a metadata fetch.Both schemes hand off to the dialer or messaging app and cannot execute script, so they are in the same class as the already-permitted
mailto:.javascript:,data:, andvbscript:remain blocked. Scheme matching stays exact-case, mirroring how the sanitizer already treatshttps:vsHTTPS:.Tests
memo-content-security.test.tsx:tel:andsms:hrefs survive; script-capable schemes are still stripped.memo-content-paragraph.test.tsx: handoff links do not get preview cards.Full web vitest suite passes (178 files, 1416 tests).