Files
pad/web
xarmian 94d35509a4 feat: share links with hardened security, anonymous access, and analytics (#88)
* feat: share links with hashed tokens and /s/{token} route

Add share_links and share_link_views tables with CRUD API and
anonymous resolution route (TASK-421).

Data model:
- share_links: token_hash (SHA-256), target_type/id, permission,
  password_hash, expires_at, max_views, require_auth, view tracking
- share_link_views: per-view records with fingerprint/user tracking

Token security:
- 192-bit entropy (crypto/rand), URL-safe base64 encoding
- SHA-256 hashed at rest, raw token returned only once on creation
- Generic 404 for invalid tokens (no info leakage)
- /api/v1/s/ exempt from auth middleware for anonymous access

API endpoints:
- POST /items/{slug}/share-links — create item share link
- POST /collections/{coll}/share-links — create collection share link
- GET /items/{slug}/share-links — list share links for item
- GET /collections/{coll}/share-links — list for collection
- DELETE /share-links/{id} — revoke share link
- GET /s/{token} — resolve share link, return shared content

D8: Anonymous users are ALWAYS read-only. View count and unique
viewers tracked on each resolution.

* feat: anonymous share page + share link management UI

Add minimal-chrome share link viewer page and share link CRUD in
the share dialog (TASK-422 + TASK-425).

Share page (/s/{token}):
- New SvelteKit route at /s/[token] for anonymous viewing
- Renders item (title, fields, markdown content) or collection
  (name, item list) with no app chrome (no sidebar/topbar)
- Handles require_auth links with "Sign in to view" prompt
- Root layout bypasses auth checks for /s/ routes
- "Powered by Pad" footer

Share dialog updates:
- "Share links" section below existing grants
- Create/list/revoke share links for items and collections
- Copy-to-clipboard for share URLs
- Newly created links highlighted with "only shown once" notice
- View count and auth-required badges

API client:
- ShareLink type added
- shareLinks.* methods for CRUD
- share.get(token) for anonymous resolution

* feat: share link constraints + view analytics

Add password protection, expiry, max views, and view history
endpoints for share links (TASK-423 + TASK-424).

Constraints (TASK-423):
- CreateShareLink accepts ShareLinkOptions: password, expires_at,
  max_views, require_auth, restrict_to_email
- Password hashed with bcrypt, verified on /s/{token} resolution
- Password-protected links return {require_password: true} prompt
- Expiry and max_views already validated by ValidateShareLink

Analytics (TASK-424):
- GET /share-links/{id}/views returns view history with fingerprint,
  user ID, and timestamp
- Response includes total_views, unique_viewers, last_viewed_at
- View history stored per-view in share_link_views table

* fix: harden share links — XSS, access control, data leakage, and UX gaps

- Sanitize rendered markdown with DOMPurify before {@html} injection (XSS)
- Force require_auth=true when restrict_to_email is set (access bypass)
- Reject malformed non-empty JSON bodies with 400 instead of failing open
- Return public DTOs on share endpoints to prevent leaking internal IDs,
  creator info, assignees, schemas, and other sensitive fields
- Enforce max_views atomically via conditional UPDATE to prevent races
- Fix collection share rendering: read items from top-level response key
  and map ref/status fields correctly
- Add password prompt UI and X-Share-Password header support so
  password-protected links can actually be unlocked by the frontend

* fix: follow-up hardening for share links

- Sanitize catch fallback in rendered markdown (XSS edge case if marked throws)
- Remove query-string password fallback; accept only X-Share-Password header
  to avoid leaking passwords in logs, browser history, and referrers
- Return 500 on ListItems DB failure instead of swallowing as empty collection
- Normalize restrict_to_email with ToLower/TrimSpace on create and compare
- Fix malformed JSON check for chunked bodies (ContentLength == -1)
  by checking for io.EOF instead of ContentLength > 0
- Remove internal share_link.id from public DTO responses
- Use clientIP(r) helper for consistent fingerprinting instead of raw
  X-Forwarded-For which is spoofable and includes port in RemoteAddr
- Distinguish DB errors from not-found in share link delete handler

* fix: final hardening pass for share links

- Move auth/email gate before password check to prevent unauthenticated
  callers from probing passwords and burning bcrypt CPU
- Wrap view recording (counter increment, unique-viewer accounting, view
  insert) in a single transaction so a failed insert rolls back the
  consumed view count instead of silently losing it
- Add X-Share-Password to CORS AllowedHeaders so cross-origin
  deployments can send the custom header without preflight rejection
- Validate expires_at (RFC3339) and max_views (> 0) on share link
  creation; return 400 for invalid constraints instead of creating
  immediately-unusable links
- Cap view-history endpoint limit to 1000 to prevent unbounded queries
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Pad Web UI

SvelteKit 2 + Svelte 5 frontend for Pad, compiled to static files and embedded into the Go binary.

Development

npm install
npm run dev          # Dev server at localhost:5173 (proxies API to localhost:7777)
npm run build        # Production build to build/
npm run check        # Type checking with svelte-check

When developing, run the Go backend separately with make dev from the project root.

Building for Production

Do not build in isolation. Always use make build from the project root — this builds the web frontend, then compiles the Go binary with the build output embedded via //go:embed.

Stack

  • Svelte 5 with runes ($state, $derived, $effect)
  • SvelteKit 2 with adapter-static (SPA mode)
  • Tiptap block editor with markdown round-trip
  • svelte-dnd-action for drag-and-drop in board/list views
  • SSE for real-time updates
  • TypeScript throughout

Structure

src/
  routes/                    SvelteKit pages
    +layout.svelte           App shell (sidebar + main)
    +page.svelte             Landing/redirect
    [workspace]/
      +page.svelte           Dashboard (collections, phases, activity)
      +layout.svelte         SSE connection per workspace
      [collection]/
        +page.svelte         Collection view (board/list)
      [collection]/[item]/
        +page.svelte         Item detail + editor
      conventions/            Purpose-built conventions page
      playbooks/              Purpose-built playbooks page
      settings/               Workspace settings
  lib/
    api/client.ts            HTTP API client
    components/
      layout/                Sidebar, navigation
      editor/                Tiptap editor, raw markdown editor
      fields/                FieldEditor, relation picker
      items/                 ItemCard, ItemDetail
      collections/           BoardView, ListView
      common/                StatusBadge, badges, modals
      search/                CommandPalette
      activity/              ActivityFeed
    stores/                  Svelte 5 reactive stores
      workspace.svelte.ts    Workspace state
      collections.svelte.ts  Collection + item state
      ui.svelte.ts           Sidebar, mobile state
    types/index.ts           TypeScript types and constants
  app.css                    Global styles and design tokens