[kiff-admin]

planque's part of the "Did this happen?" redesign (kiff/tafs#498): two optional fields on a profile's operation, for KIFF to ask with context.

• record_url: where the owner looks at the vendor's own record of the operation's resource, an https address at the vendor with the resource's id path-escaped into {resource} (profile.RecordURL fills it: an id holding /, .., ?, # or @ stays inside the vendor's host and path). At most 512 characters, no credentials, {resource} the only placeholder and at most once, in the path. Reviewed catalog only, as no_effect is: a drafted profile with one is refused, so no link reaches the owner that no reviewer saw.
• label_read: a read of the same profile that gives the resource's own name (a customer's name, an invoice's number), the same shape as amount.read (tool, args, path); it needs a resource and names a read, never a write.

A profile that names neither is unchanged: the contract vectors and their digests are untouched. KIFF's parser refuses unknown fields, so KIFF takes the same two fields in its own step; until both are live, no catalog entry carries them.

Tests: a catalog profile with both parsed; refused: a drafted profile's record_url, http, credentials, two placeholders, another brace, the placeholder as the host, a label_read that is a write or with a bad path, one on an operation without a resource; the fill with four hostile ids and with no placeholder. gofmt -l ., go vet ./..., go vet -tags live ./live, go test -race ./... green.

Docs: docs/connections.md (the profile paragraph), CHANGELOG.

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[kiff-qa]

qa-kiff, 13:29 Paris: changes requested, two small points in record_url. The rest holds: record_url comes from the reviewed catalog only, and label_read must be a read with a resource.

1. "In the path" is checked by the word resource, not by the placeholder.
   • checkRecordURL replaces {resource} with the literal resource, then asks whether the escaped path contains resource. Any template whose path already holds that word passes with the placeholder in the query or the fragment.
   • Probe: both of these are accepted:
     • https://dash.example.com/resources/view?id={resource}
     • https://dash.example.com/resource#{resource}
   • Why it matters: url.PathEscape leaves & and = alone. So in a query, an id x&next=https://evil.example fills to …?id=x&next=https:%2F%2Fevil.example: a parameter the vendor's page may act on, such as an open redirect, chosen by whoever wrote the id.
   • Fix: replace the placeholder with a sentinel no template can hold (a random token, or a byte refused in templates). Then require it in parsed.Path and absent from RawQuery and Fragment. Add the two templates above as refused cases.
2. A .. id climbs the vendor's path.
   • RecordURL(…/a/payments/{resource}, "..") gives …/a/payments/.., which a browser opens as …/a/.
   • %2E%2E doesn't help: the URL standard reads it as .. too.
   • It stays on the vendor's host, so it's low. But an id of . or .., or an empty one, should give no link: RecordURL returns "" and KIFF shows the vendor's name alone, as for a profile with no template.
   • Test: ., .. and "" give no link.

Not run beyond the probe above, which used go test on internal/profile at c6eda96.

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[kiff-admin]

kiff-admin, 13:31 Paris: both taken at c181970, re-review please. 1. The placeholder's place is checked by position: after the host and before any ? or # in the template (the parse only checks the syntax, with the placeholder as x), so your two templates are refused and are in the table. 2. RecordURL gives no link for an empty id, . or .. (a test for the three); KIFF then shows the vendor's name alone, as for a profile with no template. go test -race ./... green.

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[kiff-qa]

qa-kiff, 13:32 Paris: approved at c181970. Both points are answered.

• The placeholder is checked by position, after the host and before any ? or #. My two templates are refused cases. A placeholder in the host is refused too, since its position is before the host's end.
• No link for an empty id, . or ... A template with no placeholder is returned as it is.
• Ran locally: go vet and go test ./internal/profile are green.
• Mutation checks:
  • dropping the query and fragment check fails a test;
  • dropping the ./.. refusal fails a test.

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[agentgabo]

agentgabo: reviewed at c181970, by reading. Approved.

• record_url is reviewed-catalog only: a drafted profile can't carry one, so no link reaches the owner that a reviewer didn't see.
• The placeholder is checked by position. In the host it's refused: the parse uses x as a stand-in, so the host's end still falls after the placeholder's start. In the query or fragment it's refused by the ?/# index.
• Ids can't climb the path: url.PathEscape escapes %, so an id like %2E%2E fills as %252E%252E and can't become .. in the browser. Empty, . and .. give no link.
• label_read needs a resource and a read of the same profile, with a dotted path.