host: reject malformed sx_content at write time (blog 33/33, 199 total)

Complete the malformed-post defence: instead of only degrading on read,
refuse to store a post whose body won't parse, so bad content never enters
the durable store in the first place.

- host/blog-content-ok?: empty body is allowed, otherwise it must parse
  (parse-safe non-nil).
- POST /new (form): missing title OR unparseable body -> 400 HTML page.
- POST /posts (JSON): unparseable sx_content -> 400 "invalid sx_content".
- PUT /posts/:slug (JSON): unparseable sx_content -> 400, existing post left
  intact.
- 6 new blog tests: each write path rejects "<h1 broken)" with 400 and does
  not store / does not mutate.

Verified live: malformed publish -> 400 + slug 404 (not stored); valid
publish unaffected.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
2026-06-25 22:12:03 +00:00
parent 83044ad2f0
commit 5d9cb4c6ea
2 changed files with 76 additions and 25 deletions

View File

@@ -124,6 +124,31 @@
(dream-status (host-bl-wapp (host-bl-send "DELETE" "/posts/ghost" "Bearer good" "" "")))
404)
;; -- write-time validation: malformed sx_content rejected, never stored --
;; "%3Ch1+broken%29" decodes to "<h1 broken)" — a typo'd paren the parser rejects.
(host-bl-test "form ingest malformed sx_content -> 400"
(dream-status (host-bl-wapp (host-bl-send "POST" "/new" "Bearer good"
"application/x-www-form-urlencoded"
"title=Bad+Form&sx_content=%3Ch1+broken%29&status=published")))
400)
(host-bl-test "rejected form post was not stored"
(dream-status (host-bl-wapp (host-bl-req "/bad-form/")))
404)
(host-bl-test "json create malformed sx_content -> 400"
(dream-status (host-bl-wapp (host-bl-send "POST" "/posts" "Bearer good" "application/json"
"{\"title\":\"Bad Json\",\"sx_content\":\"<h1 broken)\"}")))
400)
(host-bl-test "rejected json post was not stored"
(dream-status (host-bl-wapp (host-bl-req "/bad-json/")))
404)
(host-bl-test "json update malformed sx_content -> 400"
(dream-status (host-bl-wapp (host-bl-send "PUT" "/posts/my-first-post" "Bearer good"
"application/json" "{\"sx_content\":\"<h1 broken)\"}")))
400)
(host-bl-test "rejected update left content intact"
(contains? (dream-resp-body (host-bl-wapp (host-bl-req "/my-first-post/"))) "<h1>My First Post</h1>")
true)
;; -- experimental unguarded create-only route (POST /new, no auth) --
(define host-bl-oapp (host/make-app (list host/blog-open-create-routes host/blog-routes)))
(host/blog-use-store! (persist/open))