pixa/TODO.md

Workflow

• branch (from main)
• do the work in Next Step
• move Next Step to the top of Completed Steps
• move the top item of Future Steps into Next Step
• commit (TODO.md changes in the same commit as the work)
• merge to main if the branch is not protected, otherwise open a PR
• push

Status

pre-1.0. No git tags exist. main (6b4a1d7, 2026-04-07) is current with origin; recent work extracted the internal/magic and internal/allowlist packages. The 10 gosec findings from the 2026-07-06 morning survey are NOT fixed on main: the newest gosec/lint fix commits are from 2026-02-25 (85729d9, ce6db76) and nothing since touches gosec, so those findings remain open.

Next Step

Fix the 10 open gosec lint findings so make check passes on main again (main must always be green; no gosec fix commits have landed since 2026-02-25). No blanket suppressions; fix or justify each finding individually.

Completed Steps

• 2026-07-07 Adopted scripts-to-rule-them-all: script/ entrypoints, Makefile shims, README Entrypoints section
• 2026-04-07 extract magic byte detection into internal/magic (#42)
• 2026-03-25 extract allowlist package from internal/imgcache (#41)
• 2026-03-25 move schema_migrations table creation into 000.sql (#36)
• 2026-03-20 enforce and document exact-match-only signature verification (#40)
• 2026-03-20 bound imageprocessor.Process input read to prevent unbounded memory use (#37); consolidate appname into an internal/globals constant (#34)
• 2026-03-18 parse version prefix from migration filenames (#33)
• 2026-03-15 QA audit fixes for 1.0/MVP readiness (#25)
• 2026-03-02 split Dockerfile with pre-built golangci-lint stage for faster CI (#23)
• 2026-02-25 repo policy compliance: CI workflow, hash-pinned images, golangci-lint and gosec fixes of that date (#14); arm64 Docker build fix (#16)
• 2026-01-08 WebP and AVIF encoding support via govips (both former P0 image processing items, now done)

Future Steps

• P0: manual test pass of the auth and encrypted URL flows, then commit the checked-off results to TODO.md: visit / and see the login form; wrong key shows an error; correct signing key shows the generator form; a generated encrypted URL serves the image; an expired URL (short TTL) returns 410; logout redirects back to login
• P0: implement cache size management and eviction so the disk cannot fill up
• P0: validate configuration on startup, fail fast on bad config
• P1: implement blocked networks configuration to extend SSRF protection
• P1: rate limit global concurrent upstream fetches to prevent resource exhaustion
• P1: strip EXIF and other metadata from processed images (privacy)
• P2: security
  • referer blacklist
  • per-IP rate limiting
  • per-origin rate limiting
• P2: HTTP response handling
  • Last-Modified headers
  • Vary header for content negotiation
  • X-Request-ID propagation
• P2: auto format selection (format=auto based on Accept header)
• P2: configuration
  • add all configuration options from README
  • environment variable overrides
  • YAML config file support
• P2: operational
  • optional Sentry error reporting
  • comprehensive request logging
  • Prometheus performance metrics
  • integration tests for the image proxy flow
  • load tests to verify the 1k to 5k req/s target
• P2: documentation
  • configuration options
  • API endpoints
  • deployment guide
  • example nginx or caddy reverse proxy config