╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ web.zig ──────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭e773cb53..╮ e773cb53.. see-em: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────────╯ (613) user
╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯
.. embed/ event/ test/ ui/ command.zig diff3.zig event.zig find.zig fork.zig lib.zig main.zig main_wasm.zig markdown.zig patch.zig progress.zig push.zig search.zig search_commit.zig search_thread.zig serve.zig serve_common.zig serve_http.zig serve_ssh.zig serve_ssh_protocol.zig test.zig testnet.zig try.zig ui.zig ╭─────────────────────────────────╮ │web.zig │ ╰─────────────────────────────────╯
135 const path = uri.path.percent_encoded; 136 137 // POST routes can be scoped by any page, so they can redirect using 138 // the base of the URL. this allows logging in to keep you on the page 139 // you were on. local mode has no accounts, so only the repo routes. 140 if (method == .POST) { 141 switch (host) { 142 .server => |server| { 143 const PostRoute = enum { login, logout, ansi, @"new-repo", new, edit, remove, open, close, resolve, publish, merge, squash, attach, undo, clear }; 144 inline for (@typeInfo(PostRoute).@"enum".fields) |field| { 145 const suffix = "/" ++ field.name; 146 if (std.mem.endsWith(u8, path, suffix)) { 147 const base = path[0 .. path.len - suffix.len]; 148 return switch (@field(PostRoute, field.name)) { 149 .login => handleLogin(io, request, allocator, base, server.admin_repo_path, server.session_store), 150 .logout => handleLogout(request, base, server.session_store), 151 .ansi => handleAnsi(io, request, allocator, base, server.admin_repo_path, server.users_dir, server.session_store), 152 .@"new-repo" => handleRepoNew(io, request, allocator, path, server.admin_repo_path, server.users_dir, server.session_store), 153 .new => handleNew(io, request, allocator, base, host), 154 .edit => handleEdit(io, request, allocator, base, host), 155 .remove => handleRemove(io, request, allocator, base, host), 156 .open => handleThreadStatus(io, request, allocator, base, host, true), 157 .close => handleThreadStatus(io, request, allocator, base, host, false), 158 .resolve => handleThreadResolve(io, request, allocator, base, host), 159 .publish => handlePatchPublish(io, request, allocator, base, host), 160 .merge => handlePatchMerge(io, request, allocator, base, host, .source), 161 .squash => handlePatchMerge(io, request, allocator, base, host, .squash), 162 .undo => handleUndo(io, request, allocator, base, host, .undo), 163 .clear => handleUndo(io, request, allocator, base, host, .clear), 164 .attach => handleAttach(io, request, allocator, base, host), 165 }; 166 } 167 } 168 }, 169 .local => |local| { 170 const PostRoute = enum { new, edit, remove, open, close, resolve, sync, attach, undo, clear }; 171 inline for (@typeInfo(PostRoute).@"enum".fields) |field| { 172 const suffix = "/" ++ field.name; 173 if (std.mem.endsWith(u8, path, suffix)) { 174 const base = path[0 .. path.len - suffix.len]; 175 return switch (@field(PostRoute, field.name)) { 176 .new => handleNew(io, request, allocator, base, host), 177 .edit => handleEdit(io, request, allocator, base, host), 178 .remove => handleRemove(io, request, allocator, base, host), 179 .open => handleThreadStatus(io, request, allocator, base, host, true), 180 .close => handleThreadStatus(io, request, allocator, base, host, false), 181 .resolve => handleThreadResolve(io, request, allocator, base, host), 182 .sync => handleSync(io, request, allocator, base, local), 183 .undo => handleUndo(io, request, allocator, base, host, .undo), 184 .clear => handleUndo(io, request, allocator, base, host, .clear), 185 .attach => handleAttach(io, request, allocator, base, host), 186 }; 187 } 188 } 189 }, 190 } 191 } 192 193 const get_or_head = method == .GET or method == .HEAD; 194 if (!get_or_head) { 195 try request.respond("method not allowed", .{ 196 .status = .method_not_allowed, 197 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 198 }); 199 return; 200 } 201 202 if (std.mem.eql(u8, path, "/favicon.ico")) { 203 try request.respond("", .{ 204 .status = .no_content, 205 .extra_headers = &.{.{ .name = "content-type", .value = "image/x-icon" }}, 206 }); 207 return; 208 } 209 210 // an attachment serves raw bytes rather than a page, so it is matched 211 // before the routable pages 212 if (attachmentRequest(path)) |attachment| return serveAttachment(io, request, allocator, attachment, host); 213 214 const route_maybe = switch (host) { 215 .server => ui.RoutablePage.fromUrl(path), 216 .local => ui.RoutablePage.fromUrlLocal(path), 217 }; 218 // a path that's neither a page nor an embed gets the not-found page 219 if (route_maybe == null) if (findEmbed(path)) |embed| { 220 // the embeds change with every build, so the browser must revalidate 221 // rather than heuristically cache them across server restarts 222 try request.respond(embed.body, .{ 223 .extra_headers = &.{ 224 .{ .name = "content-type", .value = embed.content_type }, 225 .{ .name = "cache-control", .value = "no-cache" }, 226 }, 227 }); 228 return; 229 }; 230 { 231 const current_page = route_maybe orelse .not_found; 232 // resolve the haxy_session cookie's token to a user_id via the 233 // store. user_id_buf lives on the stack for the rest of handleRequest, 234 // which is plenty for renderIndexHtml to consume. local mode has no 235 // accounts, so it is always logged out. 236 var user_id_buf: [evt.event_id_size]u8 = undefined; 237 var user_id: ?[]const u8 = null; 238 // the session token that named the user, so a stale one can be revoked 239 var token_buf: [SessionStore.token_hex_len]u8 = undefined; 240 var session_token: ?[]const u8 = null; 241 var form_arena = std.heap.ArenaAllocator.init(allocator); 242 defer form_arena.deinit(); 243 var form_feedback: ?ui.Session.FormFeedback = null; 244 var form_cookie_seen = false; 245 var local_flash_seen = false; 246 var sync_failure: ?[]const u8 = null; 247 var sync_failure_allocated: ?[]u8 = null; 248 defer if (sync_failure_allocated) |value| allocator.free(value); 249 // backs the cookie a claimed auto-login sets 250 var cookie_buf: [256]u8 = undefined; 251 var session_cookie: ?[]const u8 = null; 252 switch (host) { 253 .server => |server| { 254 user_id = blk: { 255 const token = getCookieValue(request, cookie_name) orelse break :blk null; 256 if (!server.session_store.lookup(token, &user_id_buf)) break :blk null; 257 session_token = token; 258 break :blk user_id_buf[0..evt.event_id_size]; 259 }; 260 // whoever seeded the store may have left a session to claim 261 if (user_id == null) { 262 if (server.session_store.autoLogin(&token_buf) and server.session_store.lookup(&token_buf, &user_id_buf)) { 263 session_cookie = try std.fmt.bufPrint(&cookie_buf, session_cookie_fmt, .{token_buf}); 264 session_token = &token_buf; 265 user_id = user_id_buf[0..evt.event_id_size]; 266 } 267 } 268 if (getCookieValue(request, form_flash_cookie)) |token| { 269 form_cookie_seen = true; 270 form_feedback = server.session_store.takeFlash(form_arena.allocator(), token); 271 } 272 }, 273 .local => { 274 if (getCookieValue(request, local_flash_cookie)) |raw| { 275 local_flash_seen = true; 276 if (std.mem.startsWith(u8, raw, local_required_title_prefix)) { 277 const tag = std.meta.stringToEnum(std.meta.Tag(ui.Session.FormFeedback), raw[local_required_title_prefix.len..]); 278 form_feedback = if (tag) |feedback_tag| switch (feedback_tag) { 279 .issue => .{ .issue = .{ .failure = .required_title } }, 280 .patch => .{ .patch = .{ .failure = .required_title } }, 281 .discussion => .{ .discussion = .{ .failure = .required_title } }, 282 else => null, 283 } else null; 284 } else if (std.mem.startsWith(u8, raw, local_sync_failure_prefix)) { 285 const value = try allocator.dupe(u8, raw[local_sync_failure_prefix.len..]); 286 sync_failure_allocated = value; 287 sync_failure = std.Uri.percentDecodeInPlace(value); 288 } 289 } 290 }, 291 } 292 293 const git_http_port: ?u16, const git_ssh_port: ?u16, const git_ssh_prefix: []const u8 = switch (host) { 294 .server => |server| .{ server.git_http_port, server.git_ssh_port, server.git_ssh_prefix }, 295 .local => .{ null, null, "" }, 296 }; 297 var session_data: ui.Session.Data = .{ 298 .user_id = user_id, 299 .form_feedback = form_feedback, 300 .sync_failure = sync_failure, 301 .current_page = current_page, 302 .host_kind = std.meta.activeTag(host), 303 .git_http_port = git_http_port, 304 .git_ssh_port = git_ssh_port, 305 .git_ssh_prefix = git_ssh_prefix, 306 }; 307 // a page that can't be built shows the not-found page instead 308 const html = renderIndexHtml(io, allocator, host, session_token, session_data) catch |err| switch (err) { 309 error.NotFound => blk: { 310 session_data.current_page = .not_found; 311 break :blk try renderIndexHtml(io, allocator, host, session_token, session_data); 312 }, 313 else => |e| return e, 314 }; 315 defer allocator.free(html); 316 317 const expired_form_cookie = if (form_cookie_seen) 318 try std.fmt.allocPrint(allocator, form_flash_cookie ++ "=; Path={s}; Max-Age=0", .{path}) 319 else 320 null; 321 defer if (expired_form_cookie) |cookie| allocator.free(cookie); 322 var header_buf: [4]std.http.Header = undefined; 323 var headers: std.ArrayList(std.http.Header) = .initBuffer(&header_buf); 324 headers.appendAssumeCapacity(.{ .name = "content-type", .value = "text/html; charset=utf-8" }); 325 if (expired_form_cookie) |cookie| headers.appendAssumeCapacity(.{ .name = "set-cookie", .value = cookie }); 326 if (local_flash_seen) headers.appendAssumeCapacity(.{ .name = "set-cookie", .value = local_flash_cookie ++ "=; Path=/; Max-Age=0" }); 327 if (session_cookie) |cookie| headers.appendAssumeCapacity(.{ .name = "set-cookie", .value = cookie }); 328 try request.respond(html, .{ 329 .status = if (session_data.current_page == .not_found) .not_found else .ok, 330 .extra_headers = headers.items, 331 }); 332 } 333 } 334 335 fn handleLogin( 336 io: std.Io, 337 request: *std.http.Server.Request, 338 allocator: std.mem.Allocator, 339 base: []const u8, 340 admin_repo_path: []const u8, 341 session_store: SessionStore, 342 ) !void { 343 const body = try readFormBody(request, allocator); 344 defer allocator.free(body); 345 346 const username = (try parseFormField(allocator, body, "username")) orelse try allocator.dupe(u8, ""); 347 defer allocator.free(username); 348 const password = (try parseFormField(allocator, body, "password")) orelse try allocator.dupe(u8, ""); 349 defer allocator.free(password); 350 351 const Repo = rp.Repo(.xit, evt.admin_repo_opts); 352 var repo = try Repo.open(io, allocator, .{ .path = admin_repo_path }); 353 defer repo.deinit(io, allocator); 354 355 var arena = std.heap.ArenaAllocator.init(allocator); 356 defer arena.deinit(); 357 358 const haxy_moment = try evt.currentMoment(evt.admin_repo_opts, &repo); 359 const result = try evt.User.verifyCredentials(evt.AdminDB, evt.admin_repo_opts.hash, haxy_moment, &arena, username, password); 360 361 // on success, return to the page the login came from (base, or "/" at the 362 // root); on failure, stay on its auth tab to surface the error. 363 const success_location: []const u8 = if (base.len == 0) "/" else base; 364 const failure_location = try std.fmt.allocPrint(arena.allocator(), "{s}/auth", .{base}); 365 366 switch (result) { 367 .success => |user_id| { 368 const token = try session_store.create(&user_id); 369 var cookie_buf: [256]u8 = undefined; 370 const cookie = try std.fmt.bufPrint(&cookie_buf, session_cookie_fmt, .{token}); 371 try request.respond("", .{ 372 .status = .see_other, 373 .extra_headers = &.{ 374 .{ .name = "location", .value = success_location }, 375 .{ .name = "set-cookie", .value = cookie }, 376 }, 377 }); 378 }, 379 .unknown_user => try respondFormFailure(request, allocator, session_store, failure_location, .{ .login = .{ .failure = .unknown_user, .username = username } }), 380 .wrong_password => try respondFormFailure(request, allocator, session_store, failure_location, .{ .login = .{ .failure = .wrong_password, .username = username } }), 381 } 382 } 383 384 fn respondFormFailure(request: *std.http.Server.Request, allocator: std.mem.Allocator, session_store: SessionStore, location: []const u8, feedback: ui.Session.FormFeedback) !void { 385 const token = try session_store.createFlash(allocator, feedback); 386 const cookie = try std.fmt.allocPrint(allocator, form_flash_cookie ++ "={s}; Path={s}; HttpOnly; SameSite=Strict", .{ token, location }); 387 defer allocator.free(cookie); 388 try request.respond("", .{ 389 .status = .see_other, 390 .extra_headers = &.{ 391 .{ .name = "location", .value = location }, 392 .{ .name = "set-cookie", .value = cookie }, 393 }, 394 }); 395 } 396 397 fn respondThreadFormFailure(request: *std.http.Server.Request, allocator: std.mem.Allocator, host: Host, location: []const u8, feedback: ui.Session.FormFeedback) !void { 398 return switch (host) { 399 .server => |server| respondFormFailure(request, allocator, server.session_store, location, feedback), 400 .local => { 401 const tag = std.meta.activeTag(feedback); 402 const required_title = switch (feedback) { 403 .issue => |value| value.failure == .required_title, 404 .discussion => |value| value.failure == .required_title, 405 .patch => |value| value.failure == .required_title, 406 else => false, 407 }; 408 if (!required_title) return error.InvalidFormFeedback; 409 const cookie = try std.fmt.allocPrint(allocator, local_flash_cookie ++ "=" ++ local_required_title_prefix ++ "{s}; Path=/; HttpOnly; SameSite=Strict", .{@tagName(tag)}); 410 defer allocator.free(cookie); 411 try request.respond("", .{ 412 .status = .see_other, 413 .extra_headers = &.{ 414 .{ .name = "location", .value = location }, 415 .{ .name = "set-cookie", .value = cookie }, 416 }, 417 }); 418 }, 419 }; 420 } 421 422 fn requiredTitleFeedback(kind: evt.EventKind, title: []const u8, labels: []const u8, description: []const u8, target_branch: []const u8, source_branch: ?[]const u8) ui.Session.FormFeedback { 423 return switch (kind) { 424 .issue => .{ .issue = .{ .failure = .required_title, .fields = .{ 425 .title = title, 426 .labels = labels, 427 .description = description, 428 } } }, 429 .patch => patchFeedback(.required_title, title, labels, description, target_branch, source_branch), 430 .discuss => .{ .discussion = .{ .failure = .required_title, .fields = .{ 431 .title = title, 432 .labels = labels, 433 .description = description, 434 } } }, 435 else => unreachable, 436 }; 437 } 438 439 fn patchFeedback(failure: ui.Session.FormFeedback.PatchFailure, title: []const u8, labels: []const u8, description: []const u8, target_branch: []const u8, source_branch: ?[]const u8) ui.Session.FormFeedback { 440 return .{ .patch = .{ .failure = failure, .fields = .{ 441 .title = title, 442 .labels = labels, 443 .description = description, 444 .target_branch = target_branch, 445 .source_branch = source_branch orelse "", 446 .source_kind = if (source_branch != null) .branch else .fork, 447 } } }; 448 } 449 450 fn handleLogout(request: *std.http.Server.Request, base: []const u8, session_store: SessionStore) !void { 451 // revoke the session server-side so the cookie is dead for anyone holding 452 // a copy, not just this browser. 453 if (getCookieValue(request, cookie_name)) |token| session_store.remove(token); 454 // return to the page the logout came from (base, or "/" at the root). 455 const location: []const u8 = if (base.len == 0) "/" else base; 456 // close the connection instead of keeping it alive: we don't read the 457 // request body, and respond()'s keep-alive path would otherwise try to 458 // discard it — which asserts on a bodyless POST that carries no 459 // content-length, and would block on one with no framing at all. a logout 460 // is just a redirect, so the browser reconnects for the follow-up GET. 461 try request.respond("", .{ 462 .status = .see_other, 463 .keep_alive = false, 464 .extra_headers = &.{ 465 .{ .name = "location", .value = location }, 466 .{ .name = "set-cookie", .value = cookie_name ++ "=; Path=/; HttpOnly; SameSite=Strict; Max-Age=0" }, 467 }, 468 }); 469 } 470 471 fn handleAnsi( 472 io: std.Io, 473 request: *std.http.Server.Request, 474 allocator: std.mem.Allocator, 475 base: []const u8, 476 admin_repo_path: []const u8, 477 users_dir: []const u8, 478 session_store: SessionStore, 479 ) !void { 480 // the toggle re-emits the user's own event, so it takes a logged-in user 481 var user_id: [evt.event_id_size]u8 = undefined; 482 const token = getCookieValue(request, cookie_name) orelse return respondLoginRequired(request); 483 if (!session_store.lookup(token, &user_id)) return respondLoginRequired(request); 484 485 { 486 const Repo = rp.Repo(.xit, evt.admin_repo_opts); 487 var repo = try Repo.open(io, allocator, .{ .path = admin_repo_path }); 488 defer repo.deinit(io, allocator); 489 490 try evt.User.toggleAnsi(evt.admin_repo_opts, io, allocator, &repo, users_dir, &user_id); 491 } 492 493 // return to the auth tab the toggle came from so the change is visible. 494 const location = try std.fmt.allocPrint(allocator, "{s}/auth", .{base}); 495 defer allocator.free(location); 496 497 // like logout, this is a bodyless POST, so close the connection rather than 498 // letting the keep-alive path try to discard a body that isn't framed. 499 try request.respond("", .{ 500 .status = .see_other, 501 .keep_alive = false, 502 .extra_headers = &.{ 503 .{ .name = "location", .value = location }, 504 }, 505 }); 506 } 507 508 // the actor for a write to the repo `repo_base` names with at least `min_role`, 509 // or null once the refusal has been sent. local mode always writes. 510 fn authorizeWrite( 511 io: std.Io, 512 allocator: std.mem.Allocator, 513 arena: *std.heap.ArenaAllocator, 514 request: *std.http.Server.Request, 515 host: Host, 516 repo_base: []const u8, 517 min_role: evt.Repo.Role, 518 ) !?ui.Actor { 519 const server = switch (host) { 520 .server => |server| server, 521 .local => |src| return .{ .author = try ui.localAuthor(src, io, allocator, arena), .role = .owner }, 522 }; 523 const authorization: ui.Authorization = blk: { 524 const user_id = requestUserId(request, server.session_store) orelse break :blk .login_required; 525 526 const repo_prefix = "/repo/"; 527 if (!std.mem.startsWith(u8, repo_base, repo_prefix)) break :blk .repo_not_found; 528 529 var admin_repo = try rp.Repo(.xit, evt.admin_repo_opts).open(io, allocator, .{ .path = server.admin_repo_path }); 530 defer admin_repo.deinit(io, allocator); 531 const moment = try evt.currentMoment(evt.admin_repo_opts, &admin_repo); 532 break :blk try ui.authorizeUser(io, moment, arena, server.users_dir, user_id, repo_base[repo_prefix.len..], min_role); 533 }; 534 switch (authorization) { 535 .actor => |actor| return actor, 536 .login_required => try respondLoginRequired(request), 537 .repo_not_found => try respondRepoNotFound(request), 538 .forbidden => try respondForbidden(request), 539 } 540 return null; 541 } 542 543 // whether the request may read the repo `repo_base` names. local mode always 544 // may. 545 fn mayRead( 546 io: std.Io, 547 allocator: std.mem.Allocator, 548 request: *std.http.Server.Request, 549 host: Host, 550 repo_base: []const u8, 551 ) !bool { 552 const server = switch (host) { 553 .server => |server| server, 554 .local => return true, 555 }; 556 const repo_prefix = "/repo/"; 557 if (!std.mem.startsWith(u8, repo_base, repo_prefix)) return false; 558 559 var admin_repo = try rp.Repo(.xit, evt.admin_repo_opts).open(io, allocator, .{ .path = server.admin_repo_path }); 560 defer admin_repo.deinit(io, allocator); 561 var arena = std.heap.ArenaAllocator.init(allocator); 562 defer arena.deinit(); 563 const moment = try evt.currentMoment(evt.admin_repo_opts, &admin_repo); 564 const user_id = blk: { 565 const id = requestUserId(request, server.session_store) orelse break :blk null; 566 break :blk if (try ui.activeUser(moment, &arena, id) != null) id else null; 567 }; 568 const owner_repo = evt.parseOwnerRepoPath(repo_base[repo_prefix.len..]) orelse return false; 569 const repo = (try evt.readRepoByOwnerAndName(io, allocator, &arena, moment, server.users_dir, owner_repo.owner, owner_repo.name)) orelse return false; 570 return evt.Repo.roleOf(repo.repo, user_id) != .none; 571 } 572 573 // the logged-in user the request's session cookie names 574 fn requestUserId(request: *std.http.Server.Request, session_store: SessionStore) ?[evt.event_id_size]u8 { 575 const token = getCookieValue(request, cookie_name) orelse return null; 576 var user_id: [evt.event_id_size]u8 = undefined; 577 return if (session_store.lookup(token, &user_id)) user_id else null; 578 } 579 580 // refuse a write from a request with no logged-in user. the body goes unread, 581 // so the connection closes. 582 fn respondLoginRequired(request: *std.http.Server.Request) !void { 583 try request.respond("log in to make changes", .{ 584 .status = .forbidden, 585 .keep_alive = false, 586 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 587 }); 588 } 589 590 // refuse a write the user's role in the repo doesn't allow 591 fn respondForbidden(request: *std.http.Server.Request) !void { 592 try request.respond("you don't have permission to do that", .{ 593 .status = .forbidden, 594 .keep_alive = false, 595 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 596 }); 597 } 598 599 fn respondRepoNotFound(request: *std.http.Server.Request) !void { 600 try request.respond("repo not found", .{ 601 .status = .not_found, 602 .keep_alive = false, 603 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 604 }); 605 } 606 607 // new actions share a suffix; the base identifies whether the form creates a 608 // thread or comment. 609 fn handleNew( 610 io: std.Io, 611 request: *std.http.Server.Request, 612 allocator: std.mem.Allocator, 613 base: []const u8, 614 host: Host, 615 ) !void { 616 if (commentBaseParts(base) != null) return handleCommentNew(io, request, allocator, base, host); 617 618 const issues_suffix = "/issues"; 619 if (std.mem.endsWith(u8, base, issues_suffix)) 620 return handleThreadNew(io, request, allocator, base[0 .. base.len - issues_suffix.len], host, .issue); 621 const discussions_suffix = "/discussions"; 622 if (std.mem.endsWith(u8, base, discussions_suffix)) 623 return handleThreadNew(io, request, allocator, base[0 .. base.len - discussions_suffix.len], host, .discuss); 624 const patches_suffix = "/patches"; 625 if (std.mem.endsWith(u8, base, patches_suffix)) 626 return handleThreadNew(io, request, allocator, base[0 .. base.len - patches_suffix.len], host, .patch); 627 628 try request.respond("new event target not found", .{ 629 .status = .not_found, 630 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 631 }); 632 } 633 634 // create a repo for the logged-in user and redirect to it. a failure goes 635 // back to the new-repo page that posted the form. 636 fn handleRepoNew( 637 io: std.Io, 638 request: *std.http.Server.Request, 639 allocator: std.mem.Allocator, 640 form_location: []const u8, 641 admin_repo_path: []const u8, 642 users_dir: []const u8, 643 session_store: SessionStore, 644 ) !void { 645 const user_id = requestUserId(request, session_store) orelse return respondLoginRequired(request); 646 var arena = std.heap.ArenaAllocator.init(allocator); 647 defer arena.deinit(); 648 const user = blk: { 649 var admin_repo = try rp.Repo(.xit, evt.admin_repo_opts).open(io, allocator, .{ .path = admin_repo_path }); 650 defer admin_repo.deinit(io, allocator); 651 const moment = try evt.currentMoment(evt.admin_repo_opts, &admin_repo); 652 break :blk (try ui.activeUser(moment, &arena, user_id)) orelse return respondLoginRequired(request); 653 }; 654 655 const body = try readFormBody(request, allocator); 656 defer allocator.free(body); 657 const name = (try parseFormField(allocator, body, "name")) orelse try allocator.dupe(u8, ""); 658 defer allocator.free(name); 659 const description = (try parseFormField(allocator, body, "description")) orelse try allocator.dupe(u8, ""); 660 defer allocator.free(description); 661 const hash_value = (try parseFormField(allocator, body, "hash")) orelse try allocator.dupe(u8, ""); 662 defer allocator.free(hash_value); 663 const access_value = (try parseFormField(allocator, body, "access")) orelse try allocator.dupe(u8, ""); 664 defer allocator.free(access_value); 665 const bad_request: std.http.Server.Request.RespondOptions = .{ .status = .bad_request, .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }} }; 666 const hash_kind = std.meta.stringToEnum(hash.HashKind, hash_value) orelse return request.respond("invalid hash", bad_request); 667 const access = std.meta.stringToEnum(evt.Repo.Access, access_value) orelse return request.respond("invalid access", bad_request); 668 669 _ = evt.createRepo(io, allocator, users_dir, &user_id, .{ .name = user.event.name, .email = user.event.email }, name, description, access, hash_kind) catch |err| { 670 const failure = ui.Session.FormFeedback.RepoFailure.fromError(err) orelse return err; 671 return respondFormFailure(request, allocator, session_store, form_location, .{ .repo = .{ .failure = failure, .fields = .{ 672 .name = name, 673 .description = description, 674 .hash = hash_kind, 675 .access = access, 676 } } }); 677 }; 678 679 const location = try std.fmt.allocPrint(allocator, "/repo/{s}/{s}", .{ user.event.name, name }); 680 defer allocator.free(location); 681 try request.respond("", .{ 682 .status = .see_other, 683 .extra_headers = &.{.{ .name = "location", .value = location }}, 684 }); 685 } 686 687 // create a thread in the repo the form's page names and redirect to it. 688 fn handleThreadNew( 689 io: std.Io, 690 request: *std.http.Server.Request, 691 allocator: std.mem.Allocator, 692 base: []const u8, 693 host: Host, 694 kind: evt.EventKind, 695 ) !void { 696 var author_arena = std.heap.ArenaAllocator.init(allocator); 697 defer author_arena.deinit(); 698 const actor = (try authorizeWrite(io, allocator, &author_arena, request, host, base, .read)) orelse return; 699 const author = actor.author; 700 const body = try readFormBody(request, allocator); 701 defer allocator.free(body); 702 703 const title = (try parseFormField(allocator, body, "title")) orelse try allocator.dupe(u8, ""); 704 defer allocator.free(title); 705 const labels = (try parseFormField(allocator, body, "labels")) orelse try allocator.dupe(u8, ""); 706 defer allocator.free(labels); 707 const description_crlf = (try parseFormField(allocator, body, "description")) orelse try allocator.dupe(u8, ""); 708 defer allocator.free(description_crlf); 709 // form submission normalizes textarea line breaks to CRLF; store plain 710 // newlines so the text renders the same on every host 711 const description = try std.mem.replaceOwned(u8, allocator, description_crlf, "\r\n", "\n"); 712 defer allocator.free(description); 713 const target_branch = (try parseFormField(allocator, body, "target_branch")) orelse try allocator.dupe(u8, ""); 714 defer allocator.free(target_branch); 715 716 const source_branch = if (kind == .patch) try parseFormField(allocator, body, "source_branch") else null; 717 defer if (source_branch) |branch| allocator.free(branch); 718 719 const valid = switch (kind) { 720 .issue => evt.Issue.fieldsValid(title, labels), 721 .patch => evt.Patch.fieldsValid(title, labels), 722 .discuss => evt.Discussion.fieldsValid(title, labels), 723 else => unreachable, 724 }; 725 if (!valid) { 726 const list_name: []const u8 = switch (kind) { 727 .issue => "issues", 728 .patch => "patches", 729 .discuss => "discussions", 730 else => unreachable, 731 }; 732 const form_location = try std.fmt.allocPrint(allocator, "{s}/{s}/new", .{ base, list_name }); 733 defer allocator.free(form_location); 734 if (!evt.titleValid(title)) { 735 return respondThreadFormFailure(request, allocator, host, form_location, requiredTitleFeedback(kind, title, labels, description, target_branch, source_branch)); 736 } 737 try request.respond("", .{ 738 .status = .see_other, 739 .extra_headers = &.{.{ .name = "location", .value = form_location }}, 740 }); 741 return; 742 } 743 744 var id_bytes: [evt.event_id_size]u8 = undefined; 745 io.random(&id_bytes); 746 const event_id_hex = std.fmt.bytesToHex(id_bytes, .lower); 747 748 const not_found = "repo not found"; 749 const request_repo = (try requestRepoSource(io, allocator, host, base)) orelse { 750 try request.respond(not_found, .{ 751 .status = .not_found, 752 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 753 }); 754 return; 755 }; 756 defer request_repo.deinit(allocator); 757 const source = request_repo.source; 758 if (kind == .patch and source_branch == null) { 759 const server = switch (host) { 760 .server => |server| server, 761 .local => return respondRemoveNotFound(request), 762 }; 763 const user_id = actor.user_id orelse return respondLoginRequired(request); 764 if (!evt.Patch.branchValid(target_branch) or !try request_repo.source.hasBranch(io, allocator, target_branch)) { 765 const form_location = try std.fmt.allocPrint(allocator, "{s}/patches/new", .{base}); 766 defer allocator.free(form_location); 767 return respondThreadFormFailure(request, allocator, host, form_location, patchFeedback(.invalid_target_branch, title, labels, description, target_branch, null)); 768 } 769 const repo_id = evt.parseEventId(std.fs.path.basename(request_repo.source.path)) catch return respondRemoveNotFound(request); 770 const repo_user_id = actor.repo_user_id orelse unreachable; 771 const fork_path = try fork.create(.{}, io, allocator, server.users_dir, .{ 772 .id = event_id_hex, 773 .user_id = user_id, 774 .repo_id = repo_id, 775 .repo_user_id = repo_user_id, 776 .title = title, 777 .description = description, 778 .labels = labels, 779 .target_branch = target_branch, 780 .author = author, 781 .timestamp = @intCast(std.Io.Timestamp.now(io, .real).toSeconds()), 782 }); 783 defer allocator.free(fork_path); 784 } else { 785 const event = evt.EventWithId{ 786 .id = event_id_hex, 787 .timestamp = @intCast(std.Io.Timestamp.now(io, .real).toSeconds()), 788 .author = author, 789 .event = switch (kind) { 790 .issue => .{ .issue = .{ .title = title, .description = description, .labels = labels } }, 791 .patch => .{ .patch = .{ .title = title, .description = description, .labels = labels, .target_branch = target_branch, .source_branch = source_branch } }, 792 .discuss => .{ .discuss = .{ .title = title, .description = description, .labels = labels } }, 793 else => unreachable, 794 }, 795 }; 796 797 switch (source.repo_kind) { 798 inline else => |repo_kind| { 799 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 800 defer any_repo.deinit(io, allocator); 801 switch (any_repo) { 802 inline else => |*repo| { 803 const result = if (kind == .patch) 804 pch.writeBranchPatch(host.event(), repo_kind, repo.self_repo_opts, io, allocator, repo, event_id_hex, event.event.patch orelse unreachable, null, author) 805 else 806 evt.consume(host.event(), .repo, repo_kind, repo.self_repo_opts, io, allocator, repo, evt.events_ref, &.{event}); 807 result catch |err| { 808 if (kind != .patch) return err; 809 const failure = ui.Session.FormFeedback.PatchFailure.fromError(err) orelse return err; 810 const form_location = try std.fmt.allocPrint(allocator, "{s}/patches/new", .{base}); 811 defer allocator.free(form_location); 812 return respondThreadFormFailure(request, allocator, host, form_location, patchFeedback(failure, title, labels, description, target_branch, source_branch)); 813 }; 814 }, 815 } 816 }, 817 } 818 } 819 820 const location = try std.fmt.allocPrint(allocator, "{s}/{s}:{s}", .{ base, @tagName(kind), &event_id_hex }); 821 defer allocator.free(location); 822 try request.respond("", .{ 823 .status = .see_other, 824 .extra_headers = &.{.{ .name = "location", .value = location }}, 825 }); 826 } 827 828 const CommentBaseParts = struct { 829 repo_base: []const u8, 830 thread_kind: evt.EventKind, 831 thread_id: [evt.event_id_size]u8, 832 comment_id: ?[evt.event_id_size]u8, 833 }; 834 835 fn commentBaseParts(base: []const u8) ?CommentBaseParts { 836 const route = ui.RoutablePage.fromUrl(base) orelse ui.RoutablePage.fromUrlLocal(base) orelse return null; 837 const identity, const thread_kind, const thread_hex, const comment_hex = switch (route) { 838 .repo_issues => |*issue| .{ issue.name.slice(), evt.EventKind.issue, issue.selected.slice(), issue.comment.slice() }, 839 .repo_patches => |*patch| .{ patch.name.slice(), evt.EventKind.patch, patch.selected.slice(), patch.comment.slice() }, 840 .repo_discussions => |*discussion| .{ discussion.name.slice(), evt.EventKind.discuss, discussion.selected.slice(), discussion.comment.slice() }, 841 else => return null, 842 }; 843 const thread_id = evt.parseEventId(thread_hex) catch return null; 844 const comment_id = if (comment_hex.len == 0) null else evt.parseEventId(comment_hex) catch return null; 845 const repo_base_len = if (identity.len == 0) 0 else "/repo/".len + identity.len; 846 return .{ .repo_base = base[0..repo_base_len], .thread_kind = thread_kind, .thread_id = thread_id, .comment_id = comment_id }; 847 } 848 849 fn handlePatchPublish( 850 io: std.Io, 851 request: *std.http.Server.Request, 852 allocator: std.mem.Allocator, 853 base: []const u8, 854 host: Host, 855 ) !void { 856 const parts = commentBaseParts(base) orelse return respondRemoveNotFound(request); 857 if (parts.thread_kind != .patch or parts.comment_id != null) return respondRemoveNotFound(request); 858 const server = switch (host) { 859 .server => |server| server, 860 .local => return respondRemoveNotFound(request), 861 }; 862 var author_arena = std.heap.ArenaAllocator.init(allocator); 863 defer author_arena.deinit(); 864 // only the draft's author may publish it, which publish checks 865 const actor = (try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .read)) orelse return; 866 const user_id = actor.user_id orelse return respondLoginRequired(request); 867 const author = actor.author; 868 869 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return respondRemoveNotFound(request); 870 defer request_repo.deinit(allocator); 871 const repo_id = evt.parseEventId(std.fs.path.basename(request_repo.source.path)) catch return respondRemoveNotFound(request); 872 var target_repo = try rp.AnyRepo(.xit, .{}).open(io, allocator, request_repo.source.localInitOpts()); 873 defer target_repo.deinit(io, allocator); 874 var admin_repo = try rp.Repo(.xit, evt.admin_repo_opts).open(io, allocator, .{ .path = server.admin_repo_path }); 875 defer admin_repo.deinit(io, allocator); 876 const id = std.fmt.bytesToHex(parts.thread_id, .lower); 877 switch (target_repo) { 878 inline else => |*repo| try pch.publish(repo.self_repo_opts, io, allocator, server.users_dir, &admin_repo, repo, .{ 879 .id = id, 880 .user_id = user_id, 881 .repo_id = repo_id, 882 .author = author, 883 .timestamp = @intCast(std.Io.Timestamp.now(io, .real).toSeconds()), 884 }), 885 } 886 try request.respond("", .{ 887 .status = .see_other, 888 .extra_headers = &.{.{ .name = "location", .value = base }}, 889 }); 890 } 891 892 fn handlePatchMerge( 893 io: std.Io, 894 request: *std.http.Server.Request, 895 allocator: std.mem.Allocator, 896 base: []const u8, 897 host: Host, 898 revision: evt.Patch.MergeRevision, 899 ) !void { 900 const parts = commentBaseParts(base) orelse return respondRemoveNotFound(request); 901 if (parts.thread_kind != .patch or parts.comment_id != null) return respondRemoveNotFound(request); 902 const server = switch (host) { 903 .server => |server| server, 904 .local => return respondRemoveNotFound(request), 905 }; 906 var author_arena = std.heap.ArenaAllocator.init(allocator); 907 defer author_arena.deinit(); 908 const author = ((try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .write)) orelse return).author; 909 910 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return respondRemoveNotFound(request); 911 defer request_repo.deinit(allocator); 912 var target_repo = try rp.AnyRepo(.xit, .{}).open(io, allocator, request_repo.source.localInitOpts()); 913 defer target_repo.deinit(io, allocator); 914 915 const id = std.fmt.bytesToHex(parts.thread_id, .lower); 916 const merged = switch (target_repo) { 917 inline else => |*repo| pch.mergeAndRemoveFork(repo.self_repo_opts, io, allocator, server.users_dir, repo, .{ 918 .id = id, 919 .revision = revision, 920 .author = author, 921 .timestamp = @intCast(std.Io.Timestamp.now(io, .real).toSeconds()), 922 }), 923 }; 924 merged catch |err| switch (err) { 925 error.MergeConflict => return request.respond("merge conflict", .{ 926 .status = .conflict, 927 .keep_alive = false, 928 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 929 }), 930 error.MergeCheckUnavailable, error.PatchOutOfDate, error.PatchDataUnavailable => {}, 931 else => return err, 932 }; 933 934 const location = try std.fmt.allocPrint(allocator, "{s}/patch:{s}", .{ parts.repo_base, &id }); 935 defer allocator.free(location); 936 try request.respond("", .{ 937 .status = .see_other, 938 .keep_alive = false, 939 .extra_headers = &.{.{ .name = "location", .value = location }}, 940 }); 941 } 942 943 // create a reply and redirect to its permalink. 944 fn handleCommentNew( 945 io: std.Io, 946 request: *std.http.Server.Request, 947 allocator: std.mem.Allocator, 948 base: []const u8, 949 host: Host, 950 ) !void { 951 const not_found = "comment parent not found"; 952 const parts = commentBaseParts(base) orelse { 953 try request.respond(not_found, .{ 954 .status = .not_found, 955 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 956 }); 957 return; 958 }; 959 960 var author_arena = std.heap.ArenaAllocator.init(allocator); 961 defer author_arena.deinit(); 962 const author = ((try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .read)) orelse return).author; 963 964 const form_body = try readFormBody(request, allocator); 965 defer allocator.free(form_body); 966 const body_crlf = (try parseFormField(allocator, form_body, "body")) orelse try allocator.dupe(u8, ""); 967 defer allocator.free(body_crlf); 968 const body = try std.mem.replaceOwned(u8, allocator, body_crlf, "\r\n", "\n"); 969 defer allocator.free(body); 970 971 if (!evt.Comment.fieldsValid(body)) { 972 const form_location = try std.fmt.allocPrint(allocator, "{s}/new", .{base}); 973 defer allocator.free(form_location); 974 try request.respond("", .{ 975 .status = .see_other, 976 .extra_headers = &.{.{ .name = "location", .value = form_location }}, 977 }); 978 return; 979 } 980 981 const thread_id_hex = std.fmt.bytesToHex(parts.thread_id, .lower); 982 const parent_id_hex = std.fmt.bytesToHex(parts.comment_id orelse parts.thread_id, .lower); 983 984 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse { 985 try request.respond(not_found, .{ 986 .status = .not_found, 987 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 988 }); 989 return; 990 }; 991 defer request_repo.deinit(allocator); 992 const source = request_repo.source; 993 var event_id_hex: [evt.event_id_size * 2]u8 = undefined; 994 switch (source.repo_kind) { 995 inline else => |repo_kind| { 996 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 997 defer any_repo.deinit(io, allocator); 998 switch (any_repo) { 999 inline else => |*repo| event_id_hex = try evt.Comment.create(host.event(), repo_kind, repo.self_repo_opts, io, allocator, repo, &thread_id_hex, &parent_id_hex, body, author), 1000 } 1001 }, 1002 } 1003 1004 const location = try std.fmt.allocPrint(allocator, "{s}/{s}:{s}/comment:{s}", .{ parts.repo_base, @tagName(parts.thread_kind), &thread_id_hex, &event_id_hex }); 1005 defer allocator.free(location); 1006 try request.respond("", .{ 1007 .status = .see_other, 1008 .extra_headers = &.{.{ .name = "location", .value = location }}, 1009 }); 1010 } 1011 1012 const AttachmentRequest = struct { 1013 repo_base: []const u8, 1014 id: [evt.event_id_size]u8, 1015 }; 1016 1017 // an attachment url is its repo's base and the attachment's event id 1018 fn attachmentRequest(path: []const u8) ?AttachmentRequest { 1019 const infix = "/attachment:"; 1020 const at = std.mem.lastIndexOf(u8, path, infix) orelse return null; 1021 const tail = path[at + infix.len ..]; 1022 const id = evt.parseEventId(tail) catch return null; 1023 return .{ .repo_base = path[0..at], .id = id }; 1024 } 1025 1026 // serve an attachment's bytes from the repo its url names 1027 fn serveAttachment( 1028 io: std.Io, 1029 request: *std.http.Server.Request, 1030 allocator: std.mem.Allocator, 1031 attachment: AttachmentRequest, 1032 host: Host, 1033 ) !void { 1034 if (!try mayRead(io, allocator, request, host, attachment.repo_base)) return respondAttachmentNotFound(request); 1035 const request_repo = (try requestRepoSource(io, allocator, host, attachment.repo_base)) orelse return respondAttachmentNotFound(request); 1036 defer request_repo.deinit(allocator); 1037 const source = request_repo.source; 1038 switch (source.repo_kind) { 1039 inline else => |repo_kind| { 1040 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 1041 defer any_repo.deinit(io, allocator); 1042 switch (any_repo) { 1043 inline else => |*repo| try sendAttachment(repo_kind, repo.self_repo_opts, io, request, allocator, repo, &attachment.id), 1044 } 1045 }, 1046 } 1047 } 1048 1049 fn sendAttachment( 1050 comptime repo_kind: rp.RepoKind, 1051 comptime repo_opts: rp.RepoOpts(repo_kind), 1052 io: std.Io, 1053 request: *std.http.Server.Request, 1054 allocator: std.mem.Allocator, 1055 repo: *rp.Repo(repo_kind, repo_opts), 1056 id: *const [evt.event_id_size]u8, 1057 ) !void { 1058 var arena = std.heap.ArenaAllocator.init(allocator); 1059 defer arena.deinit(); 1060 1061 const DB = evt.EventDB(repo_opts.hash); 1062 var event_db_maybe: ?evt.LocalEventDB(repo_opts.hash) = if (repo_kind == .git) try evt.LocalEventDB(repo_opts.hash).openReadOnly(io, allocator, repo.core.repo_dir) else null; 1063 defer if (event_db_maybe) |*event_db| event_db.deinit(io, allocator); 1064 const haxy_moment = (if (event_db_maybe) |*event_db| 1065 evt.currentMomentFromDb(repo_opts.hash, event_db.db) 1066 else if (repo_kind == .git) 1067 return respondAttachmentNotFound(request) 1068 else 1069 evt.currentMoment(repo_opts, repo)) catch return respondAttachmentNotFound(request); 1070 1071 const record = (try evt.Attachment.readById(DB, repo_opts.hash, haxy_moment, &arena, id)) orelse return respondAttachmentNotFound(request); 1072 if (record.removed) return respondAttachmentNotFound(request); 1073 if (record.blob_oid.len != hash.hexLen(repo_opts.hash)) return respondAttachmentNotFound(request); 1074 const blob_oid: *const [hash.hexLen(repo_opts.hash)]u8 = @ptrCast(record.blob_oid.ptr); 1075 1076 var moment = repo.core.latestMoment() catch return respondAttachmentNotFound(request); 1077 const state = rp.Repo(repo_kind, repo_opts).State(.read_only){ .core = &repo.core, .extra = .{ .moment = &moment } }; 1078 var object_reader = obj.ObjectReader(repo_kind, repo_opts).init(state, io, allocator, blob_oid) catch return respondAttachmentNotFound(request); 1079 defer object_reader.deinit(); 1080 if (object_reader.header().kind != .blob) return respondAttachmentNotFound(request); 1081 1082 const content_type = attachmentContentType(record.name); 1083 const encoded_name = try ui.urlEncodeRef(allocator, record.name); 1084 defer allocator.free(encoded_name); 1085 const disposition = try std.fmt.allocPrint(allocator, "{s}; filename*=UTF-8''{s}", .{ if (content_type == null) "attachment" else "inline", encoded_name }); 1086 defer allocator.free(disposition); 1087 1088 var send_buf: [8192]u8 = undefined; 1089 var body = try request.respondStreaming(&send_buf, .{ 1090 .content_length = object_reader.header().size, 1091 .respond_options = .{ 1092 .extra_headers = &.{ 1093 .{ .name = "content-type", .value = content_type orelse "application/octet-stream" }, 1094 .{ .name = "content-disposition", .value = disposition }, 1095 // uploaded bytes are never sniffed into a type that could run 1096 // as script on this origin 1097 .{ .name = "x-content-type-options", .value = "nosniff" }, 1098 }, 1099 }, 1100 }); 1101 _ = try object_reader.interface.streamRemaining(&body.writer); 1102 try body.end(); 1103 } 1104 1105 // the images a browser renders safely inline. anything else downloads as 1106 // opaque bytes, so an uploaded page can't run on this origin. 1107 fn attachmentContentType(name: []const u8) ?[]const u8 { 1108 const types = [_]struct { ext: []const u8, value: []const u8 }{ 1109 .{ .ext = ".png", .value = "image/png" }, 1110 .{ .ext = ".jpg", .value = "image/jpeg" }, 1111 .{ .ext = ".jpeg", .value = "image/jpeg" }, 1112 .{ .ext = ".gif", .value = "image/gif" }, 1113 .{ .ext = ".webp", .value = "image/webp" }, 1114 }; 1115 for (types) |entry| { 1116 if (name.len > entry.ext.len and std.ascii.eqlIgnoreCase(name[name.len - entry.ext.len ..], entry.ext)) return entry.value; 1117 } 1118 return null; 1119 } 1120 1121 fn respondAttachmentNotFound(request: *std.http.Server.Request) !void { 1122 try request.respond("attachment not found", .{ 1123 .status = .not_found, 1124 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1125 }); 1126 } 1127 1128 fn respondAttachmentParentNotFound(request: *std.http.Server.Request) !void { 1129 try request.respond("attachment parent not found", .{ 1130 .status = .not_found, 1131 .keep_alive = false, 1132 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1133 }); 1134 } 1135 1136 // the upload declares its file's name here, since the body is the file itself 1137 const attachment_name_header = "x-attachment-name"; 1138 1139 const AttachParentParts = struct { 1140 repo_base: []const u8, 1141 kind: evt.EventKind, 1142 id_bytes: [evt.event_id_size]u8, 1143 }; 1144 1145 // what an attachment hangs off: the `<kind>:<id>` segment the form's page ends 1146 // with, whatever kind that is 1147 fn attachParentParts(base: []const u8) ?AttachParentParts { 1148 const segment_at = std.mem.lastIndexOfScalar(u8, base, '/') orelse return null; 1149 const segment = base[segment_at + 1 ..]; 1150 const colon_at = std.mem.lastIndexOfScalar(u8, segment, ':') orelse return null; 1151 const kind = std.meta.stringToEnum(evt.EventKind, segment[0..colon_at]) orelse return null; 1152 const id_bytes = evt.parseEventId(segment[colon_at + 1 ..]) catch return null; 1153 return .{ .repo_base = base[0..segment_at], .kind = kind, .id_bytes = id_bytes }; 1154 } 1155 1156 // attach the uploaded file to the event the url names, then reload. the file is 1157 // the whole request body, so it streams from the socket into the object store 1158 // without being buffered. 1159 fn handleAttach( 1160 io: std.Io, 1161 request: *std.http.Server.Request, 1162 allocator: std.mem.Allocator, 1163 base: []const u8, 1164 host: Host, 1165 ) !void { 1166 const parts = attachParentParts(base) orelse return respondAttachmentParentNotFound(request); 1167 1168 var author_arena = std.heap.ArenaAllocator.init(allocator); 1169 defer author_arena.deinit(); 1170 const actor = (try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .read)) orelse return; 1171 const author = actor.author; 1172 // an attachment changes the event it hangs off 1173 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return respondAttachmentParentNotFound(request); 1174 defer request_repo.deinit(allocator); 1175 const source = request_repo.source; 1176 if (!try source.canModify(io, allocator, actor, parts.kind, &parts.id_bytes)) return respondForbidden(request); 1177 1178 const name = (try attachmentName(allocator, request)) orelse return respondUploadError(request, .bad_request, "attachment needs a name"); 1179 defer allocator.free(name); 1180 if (!evt.Attachment.nameValid(name)) return respondUploadError(request, .bad_request, "invalid attachment name"); 1181 1182 const size = request.head.content_length orelse return respondUploadError(request, .length_required, "attachments must declare a content length"); 1183 if (size == 0) return respondUploadError(request, .bad_request, "attachment is empty"); 1184 if (size > evt.Attachment.max_size) return respondUploadError(request, .payload_too_large, "attachment is too large"); 1185 1186 const parent_id_hex = std.fmt.bytesToHex(parts.id_bytes, .lower); 1187 1188 var body_buf: [4096]u8 = undefined; 1189 const blob: evt.Blob = .{ .name = name, .size = size, .reader = try request.readerExpectContinue(&body_buf) }; 1190 1191 switch (source.repo_kind) { 1192 inline else => |repo_kind| { 1193 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 1194 defer any_repo.deinit(io, allocator); 1195 switch (any_repo) { 1196 inline else => |*repo| _ = evt.Attachment.create(host.event(), repo_kind, repo.self_repo_opts, io, allocator, repo, &parent_id_hex, blob, author) catch |err| switch (err) { 1197 error.ParentNotFound => return respondAttachmentParentNotFound(request), 1198 else => return err, 1199 }, 1200 } 1201 }, 1202 } 1203 1204 // the client reloads the page itself 1205 try request.respond("", .{ .status = .no_content, .keep_alive = false }); 1206 } 1207 1208 // the name the upload declares for its file, percent-encoded so it survives a 1209 // header 1210 fn attachmentName(allocator: std.mem.Allocator, request: *std.http.Server.Request) !?[]u8 { 1211 var iter = request.iterateHeaders(); 1212 while (iter.next()) |header| { 1213 if (!std.ascii.eqlIgnoreCase(header.name, attachment_name_header)) continue; 1214 return try decodeFormValue(allocator, header.value); 1215 } 1216 return null; 1217 } 1218 1219 // an upload that failed leaves the body partly read, so the connection closes 1220 fn respondUploadError(request: *std.http.Server.Request, status: std.http.Status, message: []const u8) !void { 1221 try request.respond(message, .{ 1222 .status = status, 1223 .keep_alive = false, 1224 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1225 }); 1226 } 1227 1228 // re-emit the comment `parts` names with a new body, in the repo the host 1229 // resolves the base to. 1230 fn updateComment( 1231 io: std.Io, 1232 allocator: std.mem.Allocator, 1233 host: Host, 1234 parts: CommentBaseParts, 1235 body: []const u8, 1236 author: evt.CommitAuthor, 1237 ) !void { 1238 const comment_id = parts.comment_id orelse return error.NotFound; 1239 const thread_id = std.fmt.bytesToHex(parts.thread_id, .lower); 1240 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return error.NotFound; 1241 defer request_repo.deinit(allocator); 1242 const source = request_repo.source; 1243 switch (source.repo_kind) { 1244 inline else => |repo_kind| { 1245 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 1246 defer any_repo.deinit(io, allocator); 1247 switch (any_repo) { 1248 inline else => |*repo| try evt.Comment.update(host.event(), repo_kind, repo.self_repo_opts, io, allocator, repo, &thread_id, &comment_id, body, author), 1249 } 1250 }, 1251 } 1252 } 1253 1254 // edit actions share a suffix; the base identifies the event being edited. 1255 fn handleEdit( 1256 io: std.Io, 1257 request: *std.http.Server.Request, 1258 allocator: std.mem.Allocator, 1259 base: []const u8, 1260 host: Host, 1261 ) !void { 1262 const parts = commentBaseParts(base) orelse return respondRemoveNotFound(request); 1263 if (parts.comment_id != null) return handleCommentEdit(io, request, allocator, base, host, parts); 1264 return handleThreadEdit(io, request, allocator, base, host, parts); 1265 } 1266 1267 // replace the body of the comment the url names, then redirect to its 1268 // permalink. 1269 fn handleCommentEdit( 1270 io: std.Io, 1271 request: *std.http.Server.Request, 1272 allocator: std.mem.Allocator, 1273 base: []const u8, 1274 host: Host, 1275 parts: CommentBaseParts, 1276 ) !void { 1277 var author_arena = std.heap.ArenaAllocator.init(allocator); 1278 defer author_arena.deinit(); 1279 const actor = (try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .read)) orelse return; 1280 const author = actor.author; 1281 // edits only reach here for a comment 1282 const comment_id = parts.comment_id orelse unreachable; 1283 { 1284 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return respondRemoveNotFound(request); 1285 defer request_repo.deinit(allocator); 1286 if (!try request_repo.source.canModify(io, allocator, actor, .comment, &comment_id)) return respondForbidden(request); 1287 } 1288 1289 const form_body = try readFormBody(request, allocator); 1290 defer allocator.free(form_body); 1291 const body_crlf = (try parseFormField(allocator, form_body, "body")) orelse try allocator.dupe(u8, ""); 1292 defer allocator.free(body_crlf); 1293 const body = try std.mem.replaceOwned(u8, allocator, body_crlf, "\r\n", "\n"); 1294 defer allocator.free(body); 1295 1296 if (!evt.Comment.fieldsValid(body)) { 1297 const form_location = try std.fmt.allocPrint(allocator, "{s}/edit", .{base}); 1298 defer allocator.free(form_location); 1299 try request.respond("", .{ 1300 .status = .see_other, 1301 .extra_headers = &.{.{ .name = "location", .value = form_location }}, 1302 }); 1303 return; 1304 } 1305 1306 const not_found = "comment not found"; 1307 updateComment(io, allocator, host, parts, body, author) catch |err| switch (err) { 1308 error.NotFound => { 1309 try request.respond(not_found, .{ 1310 .status = .not_found, 1311 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1312 }); 1313 return; 1314 }, 1315 else => |e| return e, 1316 }; 1317 1318 try request.respond("", .{ 1319 .status = .see_other, 1320 .extra_headers = &.{.{ .name = "location", .value = base }}, 1321 }); 1322 } 1323 1324 fn updateThread( 1325 comptime Event: type, 1326 io: std.Io, 1327 allocator: std.mem.Allocator, 1328 host: Host, 1329 repo_base: []const u8, 1330 id: *const [evt.event_id_size]u8, 1331 update: Event.Update, 1332 author: evt.CommitAuthor, 1333 ) !void { 1334 const request_repo = (try requestRepoSource(io, allocator, host, repo_base)) orelse return error.NotFound; 1335 defer request_repo.deinit(allocator); 1336 const source = request_repo.source; 1337 switch (source.repo_kind) { 1338 inline else => |repo_kind| { 1339 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 1340 defer any_repo.deinit(io, allocator); 1341 switch (any_repo) { 1342 inline else => |*repo| try Event.update(host.event(), repo_kind, repo.self_repo_opts, io, allocator, repo, id, update, author), 1343 } 1344 }, 1345 } 1346 } 1347 1348 const RemoveParts = struct { 1349 repo_base: []const u8, 1350 kind: evt.EventKind, 1351 id: [evt.event_id_size]u8, 1352 }; 1353 1354 // split a remove url into the repo and event it names 1355 fn removeParts(base: []const u8) ?RemoveParts { 1356 if (attachmentRequest(base)) |attachment| { 1357 const parent = attachParentParts(attachment.repo_base) orelse return null; 1358 return .{ 1359 .repo_base = parent.repo_base, 1360 .kind = .attach, 1361 .id = attachment.id, 1362 }; 1363 } 1364 if (commentBaseParts(base)) |thread| return .{ 1365 .repo_base = thread.repo_base, 1366 .kind = if (thread.comment_id != null) .comment else thread.thread_kind, 1367 .id = thread.comment_id orelse thread.thread_id, 1368 }; 1369 return null; 1370 } 1371 1372 // remove the event named by the form's url 1373 fn handleRemove( 1374 io: std.Io, 1375 request: *std.http.Server.Request, 1376 allocator: std.mem.Allocator, 1377 base: []const u8, 1378 host: Host, 1379 ) !void { 1380 const parts = removeParts(base) orelse return respondRemoveNotFound(request); 1381 1382 var author_arena = std.heap.ArenaAllocator.init(allocator); 1383 defer author_arena.deinit(); 1384 const actor = (try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .read)) orelse return; 1385 const author = actor.author; 1386 1387 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return respondRemoveNotFound(request); 1388 defer request_repo.deinit(allocator); 1389 const source = request_repo.source; 1390 1391 if (parts.kind == .patch) switch (host) { 1392 .server => |server| { 1393 const user_id = actor.user_id orelse return respondLoginRequired(request); 1394 1395 // a draft lives in its author's user repo 1396 if (try evt.readForkById(io, allocator, &author_arena, server.users_dir, &user_id, &parts.id)) |fork_record| { 1397 const repo_id = evt.parseEventId(std.fs.path.basename(source.path)) catch return respondRemoveNotFound(request); 1398 if (!fork_record.removed and fork_record.event.stage == .draft and std.mem.eql(u8, fork_record.event.repo_id, &repo_id)) { 1399 const id = std.fmt.bytesToHex(parts.id, .lower); 1400 try fork.remove(io, allocator, server.users_dir, &user_id, &id, author); 1401 1402 const location = try std.fmt.allocPrint(allocator, "{s}/patches/drafts", .{parts.repo_base}); 1403 defer allocator.free(location); 1404 try request.respond("", .{ 1405 .status = .see_other, 1406 .keep_alive = false, 1407 .extra_headers = &.{.{ .name = "location", .value = location }}, 1408 }); 1409 return; 1410 } 1411 } 1412 }, 1413 .local => {}, 1414 }; 1415 1416 // a draft is its author's alone, which its removal above checks 1417 if (!try source.canModify(io, allocator, actor, parts.kind, &parts.id)) return respondForbidden(request); 1418 1419 switch (source.repo_kind) { 1420 inline else => |repo_kind| { 1421 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 1422 defer any_repo.deinit(io, allocator); 1423 switch (any_repo) { 1424 inline else => |*repo| evt.remove(host.event(), .repo, repo_kind, repo.self_repo_opts, io, allocator, repo, &parts.id, parts.kind, author) catch |err| switch (err) { 1425 error.EventNotFound => return respondRemoveNotFound(request), 1426 else => |e| return e, 1427 }, 1428 } 1429 }, 1430 } 1431 1432 const id = std.fmt.bytesToHex(parts.id, .lower); 1433 const location = try std.fmt.allocPrint(allocator, "{s}/event:{s}/kind:{s}", .{ parts.repo_base, &id, @tagName(parts.kind) }); 1434 defer allocator.free(location); 1435 try request.respond("", .{ 1436 .status = .see_other, 1437 .keep_alive = false, 1438 .extra_headers = &.{.{ .name = "location", .value = location }}, 1439 }); 1440 } 1441 1442 fn respondRemoveNotFound(request: *std.http.Server.Request) !void { 1443 try request.respond("event not found", .{ 1444 .status = .not_found, 1445 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1446 }); 1447 } 1448 1449 fn updateDiscussion( 1450 io: std.Io, 1451 allocator: std.mem.Allocator, 1452 host: Host, 1453 repo_base: []const u8, 1454 id: *const [evt.event_id_size]u8, 1455 title: []const u8, 1456 labels: []const u8, 1457 description: []const u8, 1458 author: evt.CommitAuthor, 1459 ) !void { 1460 const request_repo = (try requestRepoSource(io, allocator, host, repo_base)) orelse return error.NotFound; 1461 defer request_repo.deinit(allocator); 1462 const source = request_repo.source; 1463 switch (source.repo_kind) { 1464 inline else => |repo_kind| { 1465 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, source.localInitOpts()); 1466 defer any_repo.deinit(io, allocator); 1467 switch (any_repo) { 1468 inline else => |*repo| try evt.Discussion.update(host.event(), repo_kind, repo.self_repo_opts, io, allocator, repo, id, title, labels, description, author), 1469 } 1470 }, 1471 } 1472 } 1473 1474 // set the status of the issue the url names (base is 1475 // "/repo/<owner>/<name>/issue:<id>", identity elided in local mode) by 1476 // re-emitting its event, then redirect back to it 1477 fn handleThreadStatus( 1478 io: std.Io, 1479 request: *std.http.Server.Request, 1480 allocator: std.mem.Allocator, 1481 base: []const u8, 1482 host: Host, 1483 open: bool, 1484 ) !void { 1485 const not_found = "thread not found"; 1486 const parts = commentBaseParts(base) orelse { 1487 try request.respond(not_found, .{ 1488 .status = .not_found, 1489 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1490 }); 1491 return; 1492 }; 1493 1494 var author_arena = std.heap.ArenaAllocator.init(allocator); 1495 defer author_arena.deinit(); 1496 const actor = (try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .read)) orelse return; 1497 const author = actor.author; 1498 { 1499 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return respondRemoveNotFound(request); 1500 defer request_repo.deinit(allocator); 1501 if (!try request_repo.source.canModify(io, allocator, actor, parts.thread_kind, &parts.thread_id)) return respondForbidden(request); 1502 } 1503 1504 (switch (parts.thread_kind) { 1505 .issue => updateThread(evt.Issue, io, allocator, host, parts.repo_base, &parts.thread_id, .{ .status = if (open) .open else .closed }, author), 1506 .patch => updateThread(evt.Patch, io, allocator, host, parts.repo_base, &parts.thread_id, .{ .status = if (open) .open else .closed }, author), 1507 else => return respondRemoveNotFound(request), 1508 }) catch |err| switch (err) { 1509 error.NotFound => { 1510 try request.respond(not_found, .{ 1511 .status = .not_found, 1512 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1513 }); 1514 return; 1515 }, 1516 else => |e| return e, 1517 }; 1518 1519 // like logout, this is a bodyless POST, so close the connection rather than 1520 // letting the keep-alive path try to discard a body that isn't framed. 1521 try request.respond("", .{ 1522 .status = .see_other, 1523 .keep_alive = false, 1524 .extra_headers = &.{.{ .name = "location", .value = base }}, 1525 }); 1526 } 1527 1528 // replace a thread's editable fields. 1529 fn handleThreadEdit( 1530 io: std.Io, 1531 request: *std.http.Server.Request, 1532 allocator: std.mem.Allocator, 1533 base: []const u8, 1534 host: Host, 1535 parts: CommentBaseParts, 1536 ) !void { 1537 var author_arena = std.heap.ArenaAllocator.init(allocator); 1538 defer author_arena.deinit(); 1539 const actor = (try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .read)) orelse return; 1540 const author = actor.author; 1541 1542 const body = try readFormBody(request, allocator); 1543 defer allocator.free(body); 1544 1545 const title = (try parseFormField(allocator, body, "title")) orelse try allocator.dupe(u8, ""); 1546 defer allocator.free(title); 1547 const labels = (try parseFormField(allocator, body, "labels")) orelse try allocator.dupe(u8, ""); 1548 defer allocator.free(labels); 1549 const description_crlf = (try parseFormField(allocator, body, "description")) orelse try allocator.dupe(u8, ""); 1550 defer allocator.free(description_crlf); 1551 // form submission normalizes textarea line breaks to CRLF; store plain 1552 // newlines so the text renders the same on every host 1553 const description = try std.mem.replaceOwned(u8, allocator, description_crlf, "\r\n", "\n"); 1554 defer allocator.free(description); 1555 const target_branch = (try parseFormField(allocator, body, "target_branch")) orelse try allocator.dupe(u8, ""); 1556 defer allocator.free(target_branch); 1557 1558 // invalid fields send the user back to the edit form 1559 const valid = switch (parts.thread_kind) { 1560 .issue => evt.Issue.fieldsValid(title, labels), 1561 .patch => evt.Patch.fieldsValid(title, labels), 1562 .discuss => evt.Discussion.fieldsValid(title, labels), 1563 else => unreachable, 1564 }; 1565 if (!valid) { 1566 const form_location = try std.fmt.allocPrint(allocator, "{s}/edit", .{base}); 1567 defer allocator.free(form_location); 1568 if (!evt.titleValid(title)) { 1569 return respondThreadFormFailure(request, allocator, host, form_location, requiredTitleFeedback(parts.thread_kind, title, labels, description, target_branch, null)); 1570 } 1571 try request.respond("", .{ 1572 .status = .see_other, 1573 .extra_headers = &.{.{ .name = "location", .value = form_location }}, 1574 }); 1575 return; 1576 } 1577 1578 const request_repo = (try requestRepoSource(io, allocator, host, parts.repo_base)) orelse return respondRemoveNotFound(request); 1579 defer request_repo.deinit(allocator); 1580 1581 const draft_user_id = if (parts.thread_kind == .patch) actor.user_id else null; 1582 if (draft_user_id) |user_id| { 1583 const server = switch (host) { 1584 .server => |server| server, 1585 .local => unreachable, 1586 }; 1587 if (!evt.Patch.branchValid(target_branch) or !try request_repo.source.hasBranch(io, allocator, target_branch)) { 1588 const form_location = try std.fmt.allocPrint(allocator, "{s}/edit", .{base}); 1589 defer allocator.free(form_location); 1590 return respondThreadFormFailure(request, allocator, host, form_location, patchFeedback(.invalid_target_branch, title, labels, description, target_branch, null)); 1591 } 1592 const repo_id = evt.parseEventId(std.fs.path.basename(request_repo.source.path)) catch return respondRemoveNotFound(request); 1593 var admin_repo = try rp.Repo(.xit, evt.admin_repo_opts).open(io, allocator, .{ .path = server.admin_repo_path }); 1594 defer admin_repo.deinit(io, allocator); 1595 const id = std.fmt.bytesToHex(parts.thread_id, .lower); 1596 if (try pch.editDraft(.{}, io, allocator, server.users_dir, &admin_repo, .{ 1597 .id = id, 1598 .user_id = user_id, 1599 .repo_id = repo_id, 1600 .title = title, 1601 .labels = labels, 1602 .description = description, 1603 .target_branch = target_branch, 1604 .author = author, 1605 .timestamp = @intCast(std.Io.Timestamp.now(io, .real).toSeconds()), 1606 })) { 1607 try request.respond("", .{ 1608 .status = .see_other, 1609 .extra_headers = &.{.{ .name = "location", .value = base }}, 1610 }); 1611 return; 1612 } 1613 } 1614 1615 // a draft is its author's alone, which its edit above checks 1616 if (!try request_repo.source.canModify(io, allocator, actor, parts.thread_kind, &parts.thread_id)) return respondForbidden(request); 1617 1618 const not_found = switch (parts.thread_kind) { 1619 .issue => "issue not found", 1620 .patch => "patch not found", 1621 .discuss => "discussion not found", 1622 else => unreachable, 1623 }; 1624 (switch (parts.thread_kind) { 1625 .issue => updateThread(evt.Issue, io, allocator, host, parts.repo_base, &parts.thread_id, .{ .fields = .{ 1626 .title = title, 1627 .labels = labels, 1628 .description = description, 1629 } }, author), 1630 .patch => updateThread(evt.Patch, io, allocator, host, parts.repo_base, &parts.thread_id, .{ .fields = .{ 1631 .title = title, 1632 .labels = labels, 1633 .description = description, 1634 .target_branch = target_branch, 1635 } }, author), 1636 .discuss => updateDiscussion(io, allocator, host, parts.repo_base, &parts.thread_id, title, labels, description, author), 1637 else => unreachable, 1638 }) catch |err| switch (err) { 1639 error.NotFound => { 1640 try request.respond(not_found, .{ 1641 .status = .not_found, 1642 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1643 }); 1644 return; 1645 }, 1646 else => { 1647 if (parts.thread_kind != .patch) return err; 1648 const failure = ui.Session.FormFeedback.PatchFailure.fromError(err) orelse return err; 1649 const form_location = try std.fmt.allocPrint(allocator, "{s}/edit", .{base}); 1650 defer allocator.free(form_location); 1651 return respondThreadFormFailure(request, allocator, host, form_location, patchFeedback(failure, title, labels, description, target_branch, null)); 1652 }, 1653 }; 1654 1655 try request.respond("", .{ 1656 .status = .see_other, 1657 .extra_headers = &.{.{ .name = "location", .value = base }}, 1658 }); 1659 } 1660 1661 // resolve every conflicted field of the thread the url names 1662 fn handleThreadResolve( 1663 io: std.Io, 1664 request: *std.http.Server.Request, 1665 allocator: std.mem.Allocator, 1666 base: []const u8, 1667 host: Host, 1668 ) !void { 1669 const parts = commentBaseParts(base) orelse { 1670 try request.respond("thread not found", .{ 1671 .status = .not_found, 1672 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1673 }); 1674 return; 1675 }; 1676 1677 var author_arena = std.heap.ArenaAllocator.init(allocator); 1678 defer author_arena.deinit(); 1679 const author = ((try authorizeWrite(io, allocator, &author_arena, request, host, parts.repo_base, .write)) orelse return).author; 1680 1681 const body = try readFormBody(request, allocator); 1682 defer allocator.free(body); 1683 1684 var field_arena = std.heap.ArenaAllocator.init(allocator); 1685 defer field_arena.deinit(); 1686 const aa = field_arena.allocator(); 1687 const title = try parseFormField(aa, body, "title"); 1688 const labels = try parseFormField(aa, body, "labels"); 1689 1690 // the hunk inputs are submitted as d0, d1, ...; form submission normalizes their 1691 // textarea line breaks to CRLF 1692 var hunks: std.ArrayList([]const u8) = .empty; 1693 var hunk_index: usize = 0; 1694 while (true) : (hunk_index += 1) { 1695 const name = try std.fmt.allocPrint(aa, "d{d}", .{hunk_index}); 1696 const submitted = (try parseFormField(aa, body, name)) orelse break; 1697 try hunks.append(aa, try std.mem.replaceOwned(u8, aa, submitted, "\r\n", "\n")); 1698 } 1699 1700 if (parts.comment_id != null or (parts.thread_kind != .issue and parts.thread_kind != .patch)) { 1701 try request.respond("thread not found", .{ 1702 .status = .not_found, 1703 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1704 }); 1705 return; 1706 } 1707 const route = ui.RoutablePage.fromUrl(base) orelse ui.RoutablePage.fromUrlLocal(base) orelse { 1708 try request.respond("thread not found", .{ 1709 .status = .not_found, 1710 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1711 }); 1712 return; 1713 }; 1714 const theirs: []const u8 = switch (route) { 1715 .repo_patches => |*patch| patch.theirs.slice(), 1716 .repo_issues => "", 1717 else => unreachable, 1718 }; 1719 const not_found = if (parts.thread_kind == .patch) "patch not found" else "issue not found"; 1720 1721 (switch (parts.thread_kind) { 1722 .issue => updateThread(evt.Issue, io, allocator, host, parts.repo_base, &parts.thread_id, .{ .resolve = .{ 1723 .title = title, 1724 .labels = labels, 1725 .hunks = hunks.items, 1726 } }, author), 1727 .patch => updateThread(evt.Patch, io, allocator, host, parts.repo_base, &parts.thread_id, .{ .resolve = .{ 1728 .title = title, 1729 .labels = labels, 1730 .hunks = hunks.items, 1731 .theirs = theirs, 1732 } }, author), 1733 else => unreachable, 1734 }) catch |err| switch (err) { 1735 error.NotFound => { 1736 try request.respond(not_found, .{ 1737 .status = .not_found, 1738 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1739 }); 1740 return; 1741 }, 1742 // invalid fields send the user back to the resolve form 1743 error.InvalidFields => { 1744 const form_location = try std.fmt.allocPrint(allocator, "{s}/resolve", .{base}); 1745 defer allocator.free(form_location); 1746 try request.respond("", .{ 1747 .status = .see_other, 1748 .extra_headers = &.{.{ .name = "location", .value = form_location }}, 1749 }); 1750 return; 1751 }, 1752 else => |e| return e, 1753 }; 1754 1755 try request.respond("", .{ 1756 .status = .see_other, 1757 .extra_headers = &.{.{ .name = "location", .value = base }}, 1758 }); 1759 } 1760 1761 // the posted path drops the action's own segment, so the route it parses is 1762 // the undo page the action applies to, never the confirmation page itself 1763 fn handleUndo(io: std.Io, request: *std.http.Server.Request, allocator: std.mem.Allocator, base: []const u8, host: Host, action: enum { undo, clear }) !void { 1764 const route = (switch (host) { 1765 .local => ui.RoutablePage.fromUrlLocal(base), 1766 .server => ui.RoutablePage.fromUrl(base), 1767 }) orelse return respondRepoNotFound(request); 1768 if (route != .repo_undo) return respondRepoNotFound(request); 1769 const target = route.repo_undo; 1770 var arena = std.heap.ArenaAllocator.init(allocator); 1771 defer arena.deinit(); 1772 const repo_base = if (target.name.len == 0) "" else try std.fmt.allocPrint(arena.allocator(), "/repo/{s}", .{target.name.slice()}); 1773 _ = (try authorizeWrite(io, allocator, &arena, request, host, repo_base, .owner)) orelse return; 1774 const resolved = (try requestRepoSource(io, allocator, host, repo_base)) orelse return respondRepoNotFound(request); 1775 defer resolved.deinit(allocator); 1776 (switch (action) { 1777 .undo => ui.Repo.Undo.execute(io, allocator, resolved.source, target.index orelse return respondRepoNotFound(request)), 1778 .clear => ui.Repo.Undo.clearHistory(io, allocator, resolved.source), 1779 }) catch |err| switch (err) { 1780 error.NotFound, error.InvalidHistoryIndex, error.TransactionNotFound => return respondRepoNotFound(request), 1781 else => return err, 1782 }; 1783 const location = try (ui.RoutablePage.repoUndoRoute(target.name.slice(), null) orelse return error.RouteTooLong).toUrl(&arena); 1784 try request.respond("", .{ .status = .see_other, .keep_alive = false, .extra_headers = &.{.{ .name = "location", .value = location }} }); 1785 } 1786 1787 fn handleSync( 1788 io: std.Io, 1789 request: *std.http.Server.Request, 1790 allocator: std.mem.Allocator, 1791 base: []const u8, 1792 source: ui.RepoSource, 1793 ) !void { 1794 if (base.len != 0) { 1795 try request.respond("not found", .{ 1796 .status = .not_found, 1797 .extra_headers = &.{.{ .name = "content-type", .value = "text/plain" }}, 1798 }); 1799 return; 1800 } 1801 1802 var owned_failure: ?[]u8 = null; 1803 defer if (owned_failure) |message| allocator.free(message); 1804 const failure: ?[]const u8 = blk: { 1805 owned_failure = ui.Repo.Events.sync(io, allocator, source) catch |err| break :blk @errorName(err); 1806 break :blk owned_failure; 1807 }; 1808 if (failure) |message| { 1809 var encoded: std.Io.Writer.Allocating = .init(allocator); 1810 defer encoded.deinit(); 1811 try std.Uri.Component.percentEncode(&encoded.writer, message, struct { 1812 fn isUnreserved(c: u8) bool { 1813 return std.ascii.isAlphanumeric(c) or c == '-' or c == '.' or c == '_' or c == '~'; 1814 } 1815 }.isUnreserved); 1816 const cookie = try std.fmt.allocPrint( 1817 allocator, 1818 local_flash_cookie ++ "=" ++ local_sync_failure_prefix ++ "{s}; Path=/; HttpOnly; SameSite=Strict", 1819 .{encoded.written()}, 1820 ); 1821 defer allocator.free(cookie); 1822 try request.respond("", .{ 1823 .status = .see_other, 1824 .extra_headers = &.{ 1825 .{ .name = "location", .value = "/events" }, 1826 .{ .name = "set-cookie", .value = cookie }, 1827 }, 1828 }); 1829 return; 1830 } 1831 1832 try request.respond("", .{ 1833 .status = .see_other, 1834 .extra_headers = &.{ 1835 .{ .name = "location", .value = "/events" }, 1836 .{ .name = "set-cookie", .value = local_flash_cookie ++ "=; Path=/; Max-Age=0" }, 1837 }, 1838 }); 1839 } 1840 1841 fn renderIndexHtml( 1842 io: std.Io, 1843 allocator: std.mem.Allocator, 1844 host: Host, 1845 session_token: ?[]const u8, 1846 session_data: ui.Session.Data, 1847 ) ![]const u8 { 1848 const template = (findEmbed("/index.html") orelse return error.MissingIndexAsset).body; 1849 1850 var page_arena = std.heap.ArenaAllocator.init(allocator); 1851 defer page_arena.deinit(); 1852 1853 // the server admin repo must outlive the page build, since the session's 1854 // moment reads from it. 1855 var repo_maybe: ?rp.Repo(.xit, evt.admin_repo_opts) = null; 1856 defer if (repo_maybe) |*repo| repo.deinit(io, allocator); 1857 1858 var session = switch (host) { 1859 .server => |server| blk: { 1860 // open the admin repo to read live user/repo data. 1861 repo_maybe = try rp.Repo(.xit, evt.admin_repo_opts).open(io, allocator, .{ .path = server.admin_repo_path }); 1862 const repo = if (repo_maybe) |*repo| repo else unreachable; 1863 var session = try ui.Session.init(&page_arena, repo, session_data); 1864 // the session dropped a user whose account was removed, so revoke 1865 // the token that named them 1866 if (session_token) |token| { 1867 if (session.data.user_id == null) server.session_store.remove(token); 1868 } 1869 // give the page builders filesystem access to the on-disk repos (a 1870 // sibling "users" dir next to the admin repo) so the Repo page can 1871 // read its files. 1872 session.users_dir = server.users_dir; 1873 break :blk session; 1874 }, 1875 .local => |local| ui.Session{ 1876 .data = session_data, 1877 .arena = &page_arena, 1878 .page_arena = &page_arena, 1879 .local = local, 1880 }, 1881 }; 1882 session.io = io; 1883 1884 var page = try ui.Page.init(session.page_arena, &session, session.data.current_page); 1885 var root = try ui.initRoot(allocator, &page, &session); 1886 defer root.deinit(allocator); 1887 1888 const snapshot: ui.Snapshot = .{ .page = page, .session = session.data }; 1889 1890 const content = try generateHtml(allocator, &root, &session); 1891 defer allocator.free(content); 1892 1893 // serialize the snapshot so the wasm side can parse it back without making 1894 // a second request. it's embedded raw in a <script type="application/json"> 1895 // block, whose content is raw text terminated only by "</script". in json, 1896 // '<' appears solely inside string values, so escaping every '<' (and '>' 1897 // for good measure) to its \uXXXX form yields equivalent json that can't 1898 // break out of the tag. 1899 var json: std.Io.Writer.Allocating = .init(allocator); 1900 defer json.deinit(); 1901 try std.json.Stringify.value(snapshot, .{}, &json.writer); 1902 1903 var json_escaped: std.ArrayList(u8) = .empty; 1904 defer json_escaped.deinit(allocator); 1905 for (json.written()) |c| switch (c) { 1906 '<' => try json_escaped.appendSlice(allocator, "\\u003c"), 1907 '>' => try json_escaped.appendSlice(allocator, "\\u003e"), 1908 else => try json_escaped.append(allocator, c), 1909 }; 1910 1911 var out: std.ArrayList(u8) = .empty; 1912 errdefer out.deinit(allocator); 1913 { 1914 var cursor: usize = 0; 1915 for (&[_]struct { needle: []const u8, replacement: []const u8 }{ 1916 .{ .needle = "{{{ HAXY_HTML }}}", .replacement = content }, 1917 .{ .needle = "{{{ HAXY_JSON }}}", .replacement = json_escaped.items }, 1918 }) |sub| { 1919 const idx = std.mem.indexOfPos(u8, template, cursor, sub.needle) orelse return error.MissingTemplateToken; 1920 try out.appendSlice(allocator, template[cursor..idx]); 1921 try out.appendSlice(allocator, sub.replacement); 1922 cursor = idx + sub.needle.len; 1923 } 1924 try out.appendSlice(allocator, template[cursor..]); 1925 } 1926 return try out.toOwnedSlice(allocator); 1927 } 1928 1929 fn findEmbed(request_path: []const u8) ?Embed { 1930 const path = if (std.mem.eql(u8, request_path, "/")) 1931 "index.html" 1932 else if (request_path.len > 1 and request_path[0] == '/') 1933 request_path[1..] 1934 else 1935 return null; 1936 1937 for (embeds) |embed| { 1938 if (std.mem.eql(u8, path, embed.path)) return embed; 1939 } 1940 return null; 1941 } 1942 1943 // emits the TUI grid cells as static HTML. each web-native Scroll becomes its 1944 // own absolutely-positioned, natively-scrollable <div> holding its full content, 1945 // rendered recursively so nested scrolls work. 1946 pub fn generateHtml(allocator: std.mem.Allocator, root: *ui.Widget, session: *ui.Session) ![]const u8 { 1947 const grid = root.getGrid() orelse return error.MissingGrid; 1948 const root_focus = root.getFocus(); 1949 1950 var out: std.ArrayList(u8) = .empty; 1951 errdefer out.deinit(allocator); 1952 1953 switch (root.*) { 1954 .background => |*background| { 1955 if (background.art.getGrid()) |art| { 1956 var position_buf: [64]u8 = undefined; 1957 try out.appendSlice(allocator, try std.fmt.bufPrint(&position_buf, "<div class=\"ansi-art\" aria-hidden=\"true\" style=\"left:{d}ch\">", .{grid.size.width -| art.size.width})); 1958 try renderPanel(allocator, &out, background.art.getFocus(), art, session, root_focus); 1959 try out.appendSlice(allocator, "</div>"); 1960 } 1961 }, 1962 else => {}, 1963 } 1964 try out.appendSlice(allocator, "<div class=\"grid-content\" data-key=\"panel:root\">"); 1965 try renderPanel(allocator, &out, root_focus, grid, session, root_focus); 1966 try out.appendSlice(allocator, "</div>"); 1967 try renderForms(allocator, &out, root_focus); 1968 return try out.toOwnedSlice(allocator); 1969 } 1970 1971 // render one panel — a focus subtree and its content grid — as HTML, recursing 1972 // once per web-native Scroll inside it. the root panel is the whole page; each 1973 // Scroll becomes a nested, natively-scrollable div holding its full content. 1974 // emits the panel's grid cells as text, leaving holes where child scrolls sit, 1975 // then the child scroll divs over those holes. 1976 fn renderPanel(allocator: std.mem.Allocator, output: *std.ArrayList(u8), focus: *Focus, grid: Grid, session: *ui.Session, root_focus: *Focus) !void { 1977 // `direct` is this panel's scroll children, each drawn as an overlaid div. 1978 // `excluded` is every focus id that belongs to a scroll (the scroll nodes 1979 // plus their descendants, which the focus tree flattens into this panel's 1980 // children): the cell hit-test below skips them so this panel doesn't claim 1981 // cells that are really rendered inside a child scroll's own panel. 1982 // (scrolls aren't nested in practice, so every scroll child is direct here.) 1983 var direct: std.ArrayList(usize) = .empty; 1984 defer direct.deinit(allocator); 1985 var excluded: std.AutoHashMapUnmanaged(usize, void) = .empty; 1986 defer excluded.deinit(allocator); 1987 { 1988 var it = focus.children.iterator(); 1989 while (it.next()) |e| { 1990 if (e.value_ptr.focus.scroll == null) continue; 1991 try direct.append(allocator, e.key_ptr.*); 1992 try excluded.put(allocator, e.key_ptr.*, {}); 1993 var mit = e.value_ptr.focus.children.iterator(); 1994 while (mit.next()) |m| try excluded.put(allocator, m.key_ptr.*, {}); 1995 } 1996 } 1997 1998 // the HTML element a run of cells is wrapped in, chosen from the cell's 1999 // focusable kind 2000 const CellTag = union(enum) { 2001 span, // clickable focusable cell 2002 a: []const u8, // clickable focusable link 2003 plain, // non-focusable, colored 2004 2005 const a_prefix = "a:"; 2006 // an "in-page" anchor: rendered as a real <a href> so it works with js 2007 // disabled, but wasm handles it without navigating. 2008 fn init(str: []const u8) @This() { 2009 if (std.mem.startsWith(u8, str, ui.raw_link_prefix)) { 2010 return .{ .a = str[ui.raw_link_prefix.len..] }; 2011 } 2012 if (std.mem.startsWith(u8, str, ui.in_page_link_prefix)) { 2013 return .{ .a = str[ui.in_page_link_prefix.len..] }; 2014 } 2015 if (std.mem.startsWith(u8, str, a_prefix)) { 2016 return .{ .a = str[a_prefix.len..] }; 2017 } 2018 return .span; 2019 } 2020 2021 fn writeOpenTag(self: @This(), alloc: std.mem.Allocator, out: *std.ArrayList(u8), id: usize, style_attr: []const u8) !void { 2022 var id_buf: [32]u8 = undefined; 2023 switch (self) { 2024 .span => { 2025 try out.appendSlice(alloc, "<span class=\"clickable\" data-focus-id=\""); 2026 try out.appendSlice(alloc, try std.fmt.bufPrint(&id_buf, "{d}", .{id})); 2027 try out.appendSlice(alloc, "\""); 2028 try out.appendSlice(alloc, style_attr); 2029 try out.appendSlice(alloc, ">"); 2030 }, 2031 .a => |href| { 2032 // tabindex=-1 keeps these out of the browser's tab order 2033 try out.appendSlice(alloc, "<a class=\"clickable\" tabindex=\"-1\" data-focus-id=\""); 2034 try out.appendSlice(alloc, try std.fmt.bufPrint(&id_buf, "{d}", .{id})); 2035 try out.appendSlice(alloc, "\" href=\""); 2036 try appendEscapedHtml(alloc, out, href); 2037 try out.appendSlice(alloc, "\""); 2038 try out.appendSlice(alloc, style_attr); 2039 try out.appendSlice(alloc, ">"); 2040 }, 2041 .plain => { 2042 try out.appendSlice(alloc, "<span"); 2043 try out.appendSlice(alloc, style_attr); 2044 try out.appendSlice(alloc, ">"); 2045 }, 2046 } 2047 } 2048 2049 fn closeTag(self: @This()) []const u8 { 2050 return switch (self) { 2051 .span, .plain => "</span>", 2052 .a => "</a>", 2053 }; 2054 } 2055 }; 2056 2057 // the focusable owning each cell, among this panel's own (skipping any 2058 // that belong to a child scroll, whose cells are drawn in their own panel). 2059 // claimed in focus order, so the first focusable over a cell keeps it. 2060 // looking every focusable up for every cell is quadratic in a long list. 2061 const owners = try allocator.alloc(?usize, grid.size.width * grid.size.height); 2062 defer allocator.free(owners); 2063 @memset(owners, null); 2064 { 2065 var it = focus.children.iterator(); 2066 while (it.next()) |entry| { 2067 const child = entry.value_ptr.*; 2068 if (child.focus.mode != .all) continue; 2069 if (excluded.contains(entry.key_ptr.*)) continue; 2070 const r = child.rect; 2071 for (@min(r.y, grid.size.height)..@min(r.y + r.size.height, grid.size.height)) |y| { 2072 for (@min(r.x, grid.size.width)..@min(r.x + r.size.width, grid.size.width)) |x| { 2073 const owner = &owners[y * grid.size.width + x]; 2074 if (owner.* == null) owner.* = entry.key_ptr.*; 2075 } 2076 } 2077 } 2078 } 2079 2080 // the cells are the volatile part of a panel. js replaces this one subtree 2081 // wholesale while retaining the panel's native controls and scroll shells. 2082 try output.appendSlice(allocator, "<div class=\"grid-cells\">"); 2083 2084 // emit this panel's grid as rows of text, coalescing adjacent cells that 2085 // share a focus id and style into one tag (a clickable span, a link, or a 2086 // plain styled span). cells under a child scroll keep only their background. 2087 // a cell's own link is an anchor nested in that tag. 2088 for (0..grid.size.height) |y| { 2089 var cur_id: ?usize = null; 2090 var cur_style: Grid.Style = .{}; 2091 var open_tag: ?CellTag = null; 2092 var open_link: ?[]const u8 = null; 2093 var first = true; 2094 for (0..grid.size.width) |x| { 2095 const cell = (try grid.cell(x, y)).*; 2096 // a cell covered by a child scroll's viewport is drawn by that scroll's 2097 // own div, so blank its glyph and make it non-clickable here — but keep 2098 // its background, so the backdrop still shows through the scroll's 2099 // transparent div instead of a bare hole. 2100 const covered_by_scroll = blk: { 2101 for (direct.items) |id| { 2102 const r = (focus.children.get(id) orelse continue).rect; 2103 if (x >= r.x and y >= r.y and x < r.x + r.size.width and y < r.y + r.size.height) break :blk true; 2104 } 2105 break :blk false; 2106 }; 2107 // the focusable owning the cell at (x, y); none for a covered cell. 2108 const cell_id = if (covered_by_scroll) null else owners[y * grid.size.width + x]; 2109 const style: Grid.Style = if (covered_by_scroll) .{ .bg = cell.style.bg } else cell.style; 2110 2111 if (first or cell_id != cur_id or !style.eql(cur_style)) { 2112 if (open_link != null) try output.appendSlice(allocator, "</a>"); 2113 open_link = null; 2114 if (open_tag) |t| try output.appendSlice(allocator, t.closeTag()); 2115 2116 var new_tag: ?CellTag = null; 2117 if (cell_id) |id| { 2118 if (focus.children.get(id)) |child| { 2119 new_tag = switch (child.focus.kind) { 2120 .custom => |custom| CellTag.init(custom), 2121 else => .span, 2122 }; 2123 } 2124 } 2125 if (new_tag == null and !style.eql(.{})) new_tag = .plain; 2126 2127 if (new_tag) |t| { 2128 var style_buf: [192]u8 = undefined; 2129 try t.writeOpenTag(allocator, output, cell_id orelse 0, styleAttr(&style_buf, style)); 2130 } 2131 2132 open_tag = new_tag; 2133 cur_id = cell_id; 2134 cur_style = style; 2135 first = false; 2136 } 2137 2138 // an anchor can't nest in another, so a link tag's cells skip theirs 2139 const in_anchor = if (open_tag) |t| t == .a else false; 2140 const link = if (covered_by_scroll or in_anchor) null else webLink(cell.link); 2141 if (!sameLink(link, open_link)) { 2142 if (open_link != null) try output.appendSlice(allocator, "</a>"); 2143 if (link) |url| { 2144 try output.appendSlice(allocator, "<a class=\"cell-link\" tabindex=\"-1\" target=\"_blank\" rel=\"noopener noreferrer\" href=\""); 2145 try appendEscapedHtml(allocator, output, url); 2146 try output.appendSlice(allocator, "\">"); 2147 } 2148 open_link = link; 2149 } 2150 2151 if (covered_by_scroll) { 2152 try appendEscapedHtml(allocator, output, " "); 2153 } else if (cell.continuation) { 2154 // the wide rune to the left was emitted 2ch wide, covering this column 2155 } else if (cell.rune) |rune| { 2156 var encoded: [4]u8 = undefined; 2157 const encoded_len = try std.unicode.utf8Encode(rune, &encoded); 2158 const rune_text = encoded[0..encoded_len]; 2159 // a double-width rune is pinned inside a 2ch span so the 2160 // fallback glyph's advance width can't shift the rest of the row 2161 const wide = x + 1 < grid.size.width and (try grid.cell(x + 1, y)).continuation; 2162 if (wide) { 2163 try output.appendSlice(allocator, "<span class=\"w2\">"); 2164 try appendEscapedHtml(allocator, output, rune_text); 2165 try output.appendSlice(allocator, "</span>"); 2166 } else { 2167 try appendEscapedHtml(allocator, output, rune_text); 2168 } 2169 } else { 2170 try appendEscapedHtml(allocator, output, " "); 2171 } 2172 } 2173 if (open_link != null) try output.appendSlice(allocator, "</a>"); 2174 if (open_tag) |t| try output.appendSlice(allocator, t.closeTag()); 2175 try output.append(allocator, '\n'); 2176 } 2177 try output.appendSlice(allocator, "</div>"); 2178 2179 // native controls live in their panel, beside the replaceable cells. their 2180 // stable keys let JS update layout without recreating their DOM nodes, and 2181 // being actual descendants of a scroll gives them native movement/clipping. 2182 try renderPanelControls(allocator, output, focus, session, root_focus, &excluded); 2183 2184 // each child scroll becomes a natively-scrollable div positioned over its 2185 // viewport, holding its full content rendered recursively. 2186 for (direct.items) |id| { 2187 const child = focus.children.get(id) orelse continue; 2188 const info = child.focus.scroll orelse continue; 2189 const r = child.rect; 2190 // overflow only on the axes the widget scrolls; `auto` shows a bar only 2191 // when that axis actually overflows. the other axis is clipped (hidden), 2192 // matching how the terminal Scroll handles its non-scrolling axis. 2193 const overflow = switch (info.direction) { 2194 .vert => "overflow-x:hidden;overflow-y:auto", 2195 .horiz => "overflow-x:auto;overflow-y:hidden", 2196 .both => "overflow:auto", 2197 }; 2198 // the id carries a content version so JS preserves the native scroll 2199 // position across re-renders of the same content but resets it when the 2200 // content is replaced — e.g. selecting a different commit. the widget's 2201 // scroll offset (in cells) rides along so JS can apply it when it has no 2202 // preserved position, letting a wasm-side scrollToRect (the files list 2203 // scrolling to its selected row on page load) reach the browser. 2204 var buf: [256]u8 = undefined; 2205 try output.appendSlice(allocator, try std.fmt.bufPrint(&buf, "<div class=\"scroll\" data-key=\"scroll:{d}\" data-scroll-id=\"{d}-{d}\" data-scroll-direction=\"{s}\" data-scroll-x=\"{d}\" data-scroll-y=\"{d}\" style=\"left:{d}ch;top:{d}em;width:{d}ch;height:{d}em;{s}\">", .{ id, id, child.focus.version, @tagName(info.direction), info.offset_x, info.offset_y, r.x, r.y, r.size.width, r.size.height, overflow })); 2206 try renderPanel(allocator, output, child.focus, info.content, session, root_focus); 2207 try output.appendSlice(allocator, "</div>"); 2208 } 2209 } 2210 2211 const form_prefix = "form:"; 2212 const form_id_prefix = "haxy-form-"; 2213 2214 fn formAction(focus: *const Focus) ?[]const u8 { 2215 return switch (focus.kind) { 2216 .custom => |custom| if (std.mem.startsWith(u8, custom, form_prefix)) custom[form_prefix.len..] else null, 2217 else => null, 2218 }; 2219 } 2220 2221 // find the form ancestor of a flattened focus-tree child. html's `form` 2222 // attribute then associates the control with that form without requiring the 2223 // form and control to share a DOM parent. 2224 fn formOwner(root_focus: *Focus, focus_id: usize) ?usize { 2225 var id = focus_id; 2226 while (root_focus.children.get(id)) |child| { 2227 const parent_id = child.parent_id; 2228 if (parent_id == root_focus.id) return if (formAction(root_focus) != null) root_focus.id else null; 2229 const parent = root_focus.children.get(parent_id) orelse return null; 2230 if (formAction(parent.focus) != null) return parent_id; 2231 id = parent_id; 2232 } 2233 return null; 2234 } 2235 2236 fn appendFormAttribute(allocator: std.mem.Allocator, output: *std.ArrayList(u8), root_focus: *Focus, focus_id: usize) !void { 2237 const form_id = formOwner(root_focus, focus_id) orelse return; 2238 var buf: [64]u8 = undefined; 2239 try output.appendSlice(allocator, try std.fmt.bufPrint(&buf, " form=\"" ++ form_id_prefix ++ "{d}\"", .{form_id})); 2240 } 2241 2242 fn renderPanelControls( 2243 allocator: std.mem.Allocator, 2244 output: *std.ArrayList(u8), 2245 focus: *Focus, 2246 session: *ui.Session, 2247 root_focus: *Focus, 2248 excluded: *const std.AutoHashMapUnmanaged(usize, void), 2249 ) !void { 2250 var iter = focus.children.iterator(); 2251 while (iter.next()) |entry| { 2252 const id = entry.key_ptr.*; 2253 if (excluded.contains(id)) continue; 2254 const child = entry.value_ptr.*; 2255 const r = child.rect; 2256 2257 if (r.size.width == 0 or r.size.height == 0) continue; // not laid out, rather than merely off-screen 2258 2259 switch (child.focus.kind) { 2260 .text_input, .text_input_password, .text_area => { 2261 const ti = session.text_inputs.get(id) orelse continue; 2262 2263 const inner_left = r.x + 1; 2264 const inner_top = r.y + 1; 2265 const inner_width = if (r.size.width > 2) r.size.width - 2 else 0; 2266 const preserve = !ti.options.read_only; 2267 2268 if (child.focus.kind == .text_area) { 2269 const value = try ti.text(allocator); 2270 defer allocator.free(value); 2271 var id_buf: [128]u8 = undefined; 2272 try output.appendSlice(allocator, try std.fmt.bufPrint(&id_buf, "<textarea data-key=\"control:{d}\" data-focus-id=\"{d}\"", .{ id, id })); 2273 if (preserve) try output.appendSlice(allocator, " data-preserve-value") else try output.appendSlice(allocator, " readonly"); 2274 try appendFormAttribute(allocator, output, root_focus, id); 2275 if (ti.options.name.len > 0) { 2276 try output.appendSlice(allocator, " name=\""); 2277 try appendEscapedHtml(allocator, output, ti.options.name); 2278 try output.append(allocator, '"'); 2279 } 2280 const inner_height = if (r.size.height > 2) r.size.height - 2 else 0; 2281 var pos_buf: [128]u8 = undefined; 2282 try output.appendSlice(allocator, try std.fmt.bufPrint(&pos_buf, " style=\"left:{d}ch;top:{d}em;width:{d}ch;height:{d}em\">\n", .{ inner_left, inner_top, inner_width, inner_height })); 2283 try appendEscapedHtml(allocator, output, value); 2284 try output.appendSlice(allocator, "</textarea>"); 2285 continue; 2286 } 2287 2288 var id_buf: [160]u8 = undefined; 2289 try output.appendSlice(allocator, try std.fmt.bufPrint(&id_buf, "<input type=\"{s}\" data-key=\"control:{d}\" data-focus-id=\"{d}\"", .{ if (child.focus.kind == .text_input_password) "password" else "text", id, id })); 2290 if (preserve) try output.appendSlice(allocator, " data-preserve-value") else try output.appendSlice(allocator, " readonly"); 2291 try appendFormAttribute(allocator, output, root_focus, id); 2292 if (ti.options.name.len > 0) { 2293 try output.appendSlice(allocator, " name=\""); 2294 try appendEscapedHtml(allocator, output, ti.options.name); 2295 try output.append(allocator, '"'); 2296 } 2297 if (child.focus.kind != .text_input_password) { 2298 const value = try ti.text(allocator); 2299 defer allocator.free(value); 2300 try output.appendSlice(allocator, " value=\""); 2301 try appendEscapedHtml(allocator, output, value); 2302 try output.append(allocator, '"'); 2303 } 2304 var pos_buf: [96]u8 = undefined; 2305 try output.appendSlice(allocator, try std.fmt.bufPrint(&pos_buf, " style=\"left:{d}ch;top:{d}em;width:{d}ch;height:1em\">", .{ inner_left, inner_top, inner_width })); 2306 }, 2307 .custom => |custom| { 2308 if (std.mem.eql(u8, custom, "submit") or std.mem.startsWith(u8, custom, ui.submit_action_prefix)) { 2309 if (formOwner(root_focus, id) == null) continue; 2310 var id_buf: [128]u8 = undefined; 2311 try output.appendSlice(allocator, try std.fmt.bufPrint(&id_buf, "<button type=\"submit\" data-key=\"control:{d}\" data-focus-id=\"{d}\"", .{ id, id })); 2312 try appendFormAttribute(allocator, output, root_focus, id); 2313 if (std.mem.startsWith(u8, custom, ui.submit_action_prefix)) { 2314 try output.appendSlice(allocator, " formaction=\""); 2315 try appendEscapedHtml(allocator, output, custom[ui.submit_action_prefix.len..]); 2316 try output.append(allocator, '"'); 2317 } 2318 var pos_buf: [128]u8 = undefined; 2319 try output.appendSlice(allocator, try std.fmt.bufPrint(&pos_buf, " style=\"left:{d}ch;top:{d}em;width:{d}ch;height:{d}em\"></button>", .{ r.x, r.y, r.size.width, r.size.height })); 2320 } else if (std.mem.startsWith(u8, custom, ui.radio_prefix)) { 2321 // an invisible native radio over the option, checked when the option is its row's selection 2322 const field = custom[ui.radio_prefix.len..]; 2323 const separator = std.mem.indexOfScalar(u8, field, '=') orelse continue; 2324 const row = root_focus.children.get(child.parent_id) orelse continue; 2325 var id_buf: [128]u8 = undefined; 2326 try output.appendSlice(allocator, try std.fmt.bufPrint(&id_buf, "<input type=\"radio\" data-key=\"control:{d}\" data-focus-id=\"{d}\"", .{ id, id })); 2327 try appendFormAttribute(allocator, output, root_focus, id); 2328 try output.appendSlice(allocator, " name=\""); 2329 try appendEscapedHtml(allocator, output, field[0..separator]); 2330 try output.appendSlice(allocator, "\" value=\""); 2331 try appendEscapedHtml(allocator, output, field[separator + 1 ..]); 2332 try output.append(allocator, '"'); 2333 if (row.focus.child_id == id) try output.appendSlice(allocator, " checked"); 2334 var pos_buf: [128]u8 = undefined; 2335 try output.appendSlice(allocator, try std.fmt.bufPrint(&pos_buf, " style=\"opacity:0;left:{d}ch;top:{d}em;width:{d}ch;height:{d}em\">", .{ r.x, r.y, r.size.width, r.size.height })); 2336 } else if (std.mem.startsWith(u8, custom, ui.file_input_prefix)) { 2337 try output.appendSlice(allocator, "<input type=\"file\" data-preserve-value data-action=\""); 2338 try appendEscapedHtml(allocator, output, custom[ui.file_input_prefix.len..]); 2339 var id_buf: [128]u8 = undefined; 2340 try output.appendSlice(allocator, try std.fmt.bufPrint(&id_buf, "\" data-key=\"control:{d}\" data-focus-id=\"{d}\" style=\"opacity:0;left:{d}ch;top:{d}em;width:{d}ch;height:{d}em\">", .{ id, id, r.x, r.y, r.size.width, r.size.height })); 2341 } 2342 }, 2343 else => {}, 2344 } 2345 } 2346 } 2347 2348 // emit hidden form owners beside the rendered panels. their controls point 2349 // back here with the standard HTML `form` attribute. 2350 fn renderForms(allocator: std.mem.Allocator, output: *std.ArrayList(u8), root_focus: *Focus) !void { 2351 // the focus child map preserves insertion order, which matches the order 2352 // widgets were added in code 2353 var iter = root_focus.children.iterator(); 2354 while (iter.next()) |entry| { 2355 const child = entry.value_ptr.*; 2356 const action_url = formAction(child.focus) orelse continue; 2357 2358 try output.appendSlice(allocator, "<form hidden data-key=\"form:"); 2359 var id_buf: [96]u8 = undefined; 2360 try output.appendSlice(allocator, try std.fmt.bufPrint(&id_buf, "{d}\" id=\"" ++ form_id_prefix ++ "{d}\" action=\"", .{ entry.key_ptr.*, entry.key_ptr.* })); 2361 try appendEscapedHtml(allocator, output, action_url); 2362 try output.appendSlice(allocator, "\" method=\"post\"></form>"); 2363 } 2364 } 2365 2366 // the 16 ansi colors as the browser shows them (xterm's defaults) 2367 const ansi_palette = [16]Grid.Color.Rgb{ 2368 .{ .r = 0x00, .g = 0x00, .b = 0x00 }, .{ .r = 0xcd, .g = 0x00, .b = 0x00 }, .{ .r = 0x00, .g = 0xcd, .b = 0x00 }, .{ .r = 0xcd, .g = 0xcd, .b = 0x00 }, 2369 .{ .r = 0x00, .g = 0x00, .b = 0xee }, .{ .r = 0xcd, .g = 0x00, .b = 0xcd }, .{ .r = 0x00, .g = 0xcd, .b = 0xcd }, .{ .r = 0xe5, .g = 0xe5, .b = 0xe5 }, 2370 .{ .r = 0x7f, .g = 0x7f, .b = 0x7f }, .{ .r = 0xff, .g = 0x00, .b = 0x00 }, .{ .r = 0x00, .g = 0xff, .b = 0x00 }, .{ .r = 0xff, .g = 0xff, .b = 0x00 }, 2371 .{ .r = 0x5c, .g = 0x5c, .b = 0xff }, .{ .r = 0xff, .g = 0x00, .b = 0xff }, .{ .r = 0x00, .g = 0xff, .b = 0xff }, .{ .r = 0xff, .g = 0xff, .b = 0xff }, 2372 }; 2373 2374 // resolve any color to rgb: palette colors through the ansi table and the 2375 // xterm 256-color layout (16 ansi, a 6x6x6 cube, then 24 grays) 2376 fn colorRgb(color: Grid.Color) Grid.Color.Rgb { 2377 return switch (color) { 2378 .rgb => |c| c, 2379 .ansi => |a| ansi_palette[@intFromEnum(a)], 2380 .indexed => |n| if (n < 16) 2381 ansi_palette[n] 2382 else if (n < 232) blk: { 2383 const levels = [6]u8{ 0, 0x5f, 0x87, 0xaf, 0xd7, 0xff }; 2384 const i = n - 16; 2385 break :blk .{ .r = levels[i / 36], .g = levels[(i / 6) % 6], .b = levels[i % 6] }; 2386 } else blk: { 2387 const v: u8 = 8 + (n - 232) * 10; 2388 break :blk .{ .r = v, .g = v, .b = v }; 2389 }, 2390 }; 2391 } 2392 2393 // builds an HTML ` style="color:…;background-color:…"` attribute from a 2394 // cell's style into `buf`, omitting whichever color is unset. an inverted 2395 // cell swaps the two, falling back to the page's --fg/--bg variables for 2396 // whichever side is unset. text attributes follow the colors. returns an 2397 // empty slice when nothing is set. 2398 fn styleAttr(buf: []u8, style: Grid.Style) []const u8 { 2399 if (style.eql(.{})) return buf[0..0]; 2400 const prefix = " style=\""; 2401 @memcpy(buf[0..prefix.len], prefix); 2402 var i: usize = prefix.len; 2403 const inverted = style.inverted; 2404 i = cssColor(buf, i, "color", if (inverted) style.bg else style.fg, if (inverted) "var(--bg)" else null) orelse return buf[0..0]; 2405 i = cssColor(buf, i, "background-color", if (inverted) style.fg else style.bg, if (inverted) "var(--fg)" else null) orelse return buf[0..0]; 2406 const decoration: []const u8 = if (style.underline and style.strikethrough) 2407 "text-decoration:underline line-through;" 2408 else if (style.underline) 2409 "text-decoration:underline;" 2410 else if (style.strikethrough) 2411 "text-decoration:line-through;" 2412 else 2413 ""; 2414 const attributes = std.fmt.bufPrint(buf[i..], "{s}{s}{s}{s}", .{ 2415 if (style.bold) "font-weight:bold;" else "", 2416 if (style.italic) "font-style:italic;" else "", 2417 decoration, 2418 if (style.dim) "opacity:.6;" else "", 2419 }) catch return buf[0..0]; 2420 i += attributes.len; 2421 if (i >= buf.len) return buf[0..0]; 2422 buf[i] = '"'; 2423 return buf[0 .. i + 1]; 2424 } 2425 2426 // append `prop:value;` at buf[i..] for the color, or for the fallback when 2427 // the color is unset (nothing when both are). returns the new end, or null 2428 // when it doesn't fit. 2429 fn cssColor(buf: []u8, i: usize, prop: []const u8, color: ?Grid.Color, fallback: ?[]const u8) ?usize { 2430 const s = if (color) |c| blk: { 2431 const v = colorRgb(c); 2432 break :blk std.fmt.bufPrint(buf[i..], "{s}:#{x:0>2}{x:0>2}{x:0>2};", .{ prop, v.r, v.g, v.b }) catch return null; 2433 } else if (fallback) |f| 2434 std.fmt.bufPrint(buf[i..], "{s}:{s};", .{ prop, f }) catch return null 2435 else 2436 return i; 2437 return i + s.len; 2438 } 2439 2440 // a cell's link as an href, when it's a web or mail url 2441 fn webLink(link: ?[]const u8) ?[]const u8 { 2442 const url = link orelse return null; 2443 for ([_][]const u8{ "http://", "https://", "mailto:" }) |scheme| { 2444 if (std.ascii.startsWithIgnoreCase(url, scheme)) return url; 2445 } 2446 return null; 2447 } 2448 2449 fn sameLink(a: ?[]const u8, b: ?[]const u8) bool { 2450 if (a) |x| return if (b) |y| std.mem.eql(u8, x, y) else false; 2451 return b == null; 2452 } 2453 2454 fn appendEscapedHtml(allocator: std.mem.Allocator, out: *std.ArrayList(u8), input: []const u8) !void { 2455 for (input) |ch| { 2456 switch (ch) { 2457 '&' => try out.appendSlice(allocator, "&amp;"), 2458 '<' => try out.appendSlice(allocator, "&lt;"), 2459 '>' => try out.appendSlice(allocator, "&gt;"), 2460 '"' => try out.appendSlice(allocator, "&quot;"), 2461 '\'' => try out.appendSlice(allocator, "&#39;"), 2462 else => try out.append(allocator, ch), 2463 } 2464 } 2465 } 2466 2467 // --- helpers -------------------------------------------------------------- 2468 2469 fn getCookieValue(request: *std.http.Server.Request, name: []const u8) ?[]const u8 { 2470 var iter = request.iterateHeaders(); 2471 while (iter.next()) |header| { 2472 if (!std.ascii.eqlIgnoreCase(header.name, "cookie")) continue; 2473 var pairs = std.mem.splitScalar(u8, header.value, ';'); 2474 while (pairs.next()) |pair| { 2475 const trimmed = std.mem.trim(u8, pair, " \t"); 2476 const eq = std.mem.indexOfScalar(u8, trimmed, '=') orelse continue; 2477 if (std.mem.eql(u8, trimmed[0..eq], name)) { 2478 return trimmed[eq + 1 ..]; 2479 } 2480 } 2481 } 2482 return null; 2483 } 2484 2485 fn parseFormField(allocator: std.mem.Allocator, body: []const u8, key: []const u8) !?[]u8 { 2486 var iter = std.mem.splitScalar(u8, body, '&'); 2487 while (iter.next()) |pair| { 2488 const eq = std.mem.indexOfScalar(u8, pair, '=') orelse continue; 2489 if (std.mem.eql(u8, pair[0..eq], key)) { 2490 return try decodeFormValue(allocator, pair[eq + 1 ..]); 2491 } 2492 } 2493 return null; 2494 } 2495 2496 fn readFormBody(request: *std.http.Server.Request, allocator: std.mem.Allocator) ![]u8 { 2497 var buffer: [256]u8 = undefined; 2498 return request.readerExpectNone(&buffer).allocRemaining(allocator, .limited(65536)); 2499 } 2500 2501 fn decodeFormValue(allocator: std.mem.Allocator, encoded: []const u8) ![]u8 { 2502 var out: std.ArrayList(u8) = .empty; 2503 errdefer out.deinit(allocator); 2504 var i: usize = 0; 2505 while (i < encoded.len) : (i += 1) { 2506 switch (encoded[i]) { 2507 '+' => try out.append(allocator, ' '), 2508 '%' => { 2509 if (i + 2 >= encoded.len) return error.InvalidPercentEncoding; 2510 const hi = std.fmt.charToDigit(encoded[i + 1], 16) catch return error.InvalidPercentEncoding; 2511 const lo = std.fmt.charToDigit(encoded[i + 2], 16) catch return error.InvalidPercentEncoding; 2512 try out.append(allocator, hi * 16 + lo); 2513 i += 2; 2514 }, 2515 else => try out.append(allocator, encoded[i]), 2516 } 2517 } 2518 return try out.toOwnedSlice(allocator); 2519 } 2520 2521 // disk-backed web session store. each login mints a random, opaque token 2522 // (not the user's id) that is stored as a file named by the token hex, whose 2523 // contents are the raw user_id bytes. authenticating a request is a lookup of 2524 // the cookie's token; logout deletes the file, revoking the session. there is 2525 // deliberately no expiry — a session lives until logout. form failures use 2526 // files in the flash subdirectory that the redirected GET consumes. the 2527 // directory is cleared whenever the server starts. 2528 pub const SessionStore = struct { 2529 io: std.Io, 2530 dir: std.Io.Dir, 2531 flash_dir: std.Io.Dir, 2532 auto_login: ?[token_hex_len]u8, 2533 2534 pub const token_hex_len = evt.event_id_size * 2; 2535 2536 pub fn init(io: std.Io, data_dir: std.Io.Dir) !SessionStore { 2537 try data_dir.createDirPath(io, "sessions"); 2538 const dir = try data_dir.openDir(io, "sessions", .{}); 2539 errdefer dir.close(io); 2540 try dir.deleteTree(io, "flash"); 2541 try dir.createDirPath(io, "flash"); 2542 const flash_dir = try dir.openDir(io, "flash", .{}); 2543 errdefer flash_dir.close(io); 2544 const auto_login = blk: { 2545 const file = dir.openFile(io, auto_login_name, .{ .mode = .read_only }) catch break :blk null; 2546 defer file.close(io); 2547 var token: [token_hex_len]u8 = undefined; 2548 var storage: [token_hex_len]u8 = undefined; 2549 var reader = file.reader(io, &storage); 2550 reader.interface.readSliceAll(&token) catch break :blk null; 2551 break :blk token; 2552 }; 2553 return .{ .io = io, .dir = dir, .flash_dir = flash_dir, .auto_login = auto_login }; 2554 } 2555 2556 pub fn deinit(self: SessionStore) void { 2557 self.flash_dir.close(self.io); 2558 self.dir.close(self.io); 2559 } 2560 2561 // mint a new session for user_id, returning the token hex to set as the 2562 // cookie value. 2563 pub fn create(self: SessionStore, user_id: *const [evt.event_id_size]u8) ![token_hex_len]u8 { 2564 var token: [evt.event_id_size]u8 = undefined; 2565 self.io.random(&token); 2566 const token_hex = std.fmt.bytesToHex(token, .lower); 2567 const file = try self.dir.createFile(self.io, &token_hex, .{}); 2568 defer file.close(self.io); 2569 try file.writeStreamingAll(self.io, user_id); 2570 return token_hex; 2571 } 2572 2573 fn createFlash(self: SessionStore, allocator: std.mem.Allocator, value: ui.Session.FormFeedback) ![token_hex_len]u8 { 2574 var token: [evt.event_id_size]u8 = undefined; 2575 self.io.random(&token); 2576 const token_hex = std.fmt.bytesToHex(token, .lower); 2577 const file = try self.flash_dir.createFile(self.io, &token_hex, .{}); 2578 errdefer self.flash_dir.deleteFile(self.io, &token_hex) catch {}; 2579 defer file.close(self.io); 2580 2581 var json: std.Io.Writer.Allocating = .init(allocator); 2582 defer json.deinit(); 2583 try std.json.Stringify.value(value, .{}, &json.writer); 2584 try file.writeStreamingAll(self.io, json.written()); 2585 return token_hex; 2586 } 2587 2588 fn takeFlash(self: SessionStore, allocator: std.mem.Allocator, token_hex: []const u8) ?ui.Session.FormFeedback { 2589 if (!isToken(token_hex)) return null; 2590 const file = self.flash_dir.openFile(self.io, token_hex, .{ .mode = .read_only }) catch return null; 2591 defer self.flash_dir.deleteFile(self.io, token_hex) catch {}; 2592 defer file.close(self.io); 2593 2594 var storage: [4096]u8 = undefined; 2595 var reader = file.reader(self.io, &storage); 2596 const bytes = reader.interface.allocRemaining(allocator, .limited(512 * 1024)) catch return null; 2597 return std.json.parseFromSliceLeaky(ui.Session.FormFeedback, allocator, bytes, .{}) catch null; 2598 } 2599 2600 // resolve a cookie's token to its user_id. returns false (logged out) for a 2601 // missing, malformed, or unknown token. 2602 pub fn lookup(self: SessionStore, token_hex: []const u8, out: *[evt.event_id_size]u8) bool { 2603 if (!isToken(token_hex)) return false; 2604 const file = self.dir.openFile(self.io, token_hex, .{ .mode = .read_only }) catch return false; 2605 defer file.close(self.io); 2606 var storage: [evt.event_id_size]u8 = undefined; 2607 var file_reader = file.reader(self.io, &storage); 2608 file_reader.interface.readSliceAll(out) catch return false; 2609 return true; 2610 } 2611 2612 // revoke a session. a no-op for a missing or malformed token. 2613 pub fn remove(self: SessionStore, token_hex: []const u8) void { 2614 if (!isToken(token_hex)) return; 2615 self.dir.deleteFile(self.io, token_hex) catch {}; 2616 } 2617 2618 // leave `token_hex`'s session for visitors arriving without one. only the 2619 // `try` fixture writes one. the name can't collide with a session token. 2620 pub fn offerAutoLogin(self: SessionStore, token_hex: *const [token_hex_len]u8) !void { 2621 const file = try self.dir.createFile(self.io, auto_login_name, .{}); 2622 defer file.close(self.io); 2623 try file.writeStreamingAll(self.io, token_hex); 2624 } 2625 2626 pub fn autoLogin(self: SessionStore, out: *[token_hex_len]u8) bool { 2627 out.* = self.auto_login orelse return false; 2628 return true; 2629 } 2630 2631 const auto_login_name = "auto-login"; 2632 2633 // a token is exactly token_hex_len hex chars. validating before using the 2634 // value as a path keeps attacker-supplied cookies from escaping the 2635 // sessions dir (e.g. via "/" or ".." bytes). 2636 fn isToken(token_hex: []const u8) bool { 2637 if (token_hex.len != token_hex_len) return false; 2638 for (token_hex) |c| if (!std.ascii.isHex(c)) return false; 2639 return true; 2640 } 2641 }; 2642