Vellum/cmd/vellum/main.go
mithral 9772e55c73 Phase 1: accounts, sessions, per-library grants
Multi-user from the first migration, as planned.

- auth: argon2id password hashing (PHC encoded, parameters travel with the
  hash), opaque session tokens stored only as SHA-256, login rate limiting,
  and account enumeration resistance (unknown user hashes anyway)
- sessions: cookie or Bearer auth, HttpOnly + SameSite=Lax, revocation on
  password change
- grants: library_grants is the single access-control chokepoint. Admins see
  every library; everyone else sees exactly their can_read grants
- bootstrap: VELLUM_ADMIN_USER/PASSWORD create the first admin only on an
  empty database. No default password is ever invented.
- httpapi: mounts modules on a shared mux, session middleware innermost
- httpx: shared JSON helpers, strict body decoding

Gate: two users see different libraries. Tests cover that, plus session
expiry, token-at-rest, grant upsert, and the full login/me/logout flow.
2026-10-09 16:31:24 -04:00

108 lines
2.7 KiB
Go

// Command vellum is the unified media server: one process, one database,
// every media type.
package main
import (
"context"
"errors"
"fmt"
"net/http"
"os"
"os/signal"
"syscall"
"time"
"github.com/mithral/vellum/internal/auth"
"github.com/mithral/vellum/internal/core"
"github.com/mithral/vellum/internal/httpapi"
"github.com/mithral/vellum/migrations"
)
// version is overridden at build time with -ldflags "-X main.version=...".
var version = "dev"
func main() {
if err := run(); err != nil {
fmt.Fprintln(os.Stderr, "vellum: fatal:", err)
os.Exit(1)
}
}
func run() error {
cfg, err := core.LoadConfig()
if err != nil {
return err
}
log := core.NewLogger(cfg.LogLevel, cfg.LogFormat)
log.Info("starting vellum", "version", version, "listen", cfg.Listen)
if err := cfg.Validate(); err != nil {
return err
}
db, err := core.OpenDB(cfg.DBPath)
if err != nil {
return err
}
defer db.Close()
migCtx, cancelMig := context.WithTimeout(context.Background(), 60*time.Second)
err = core.Migrate(migCtx, db, migrations.FS, log)
cancelMig()
if err != nil {
return err
}
api := httpapi.New(db, log, version)
authenticator := auth.NewAuthenticator(db, cfg.CookieName, cfg.SessionTTL, cfg.CookieSecure, log)
if !cfg.CookieSecure {
log.Warn("VELLUM_COOKIE_SECURE is false; session cookies will be sent over plain HTTP. " +
"Set it to true when serving over TLS.")
}
if err := auth.EnsureAdminFromEnv(context.Background(), db, log, cfg.AdminUser, cfg.AdminPassword); err != nil {
return fmt.Errorf("bootstrap admin: %w", err)
}
auth.NewHandlers(authenticator, log).Register(api.Mux())
api.SetAuth(authenticator)
srv := &http.Server{
Addr: cfg.Listen,
Handler: api.Handler(),
// ReadHeaderTimeout protects against slowloris. WriteTimeout is
// deliberately zero: streaming large media files must not be cut off.
ReadHeaderTimeout: 10 * time.Second,
ReadTimeout: cfg.ReadTimeout,
WriteTimeout: cfg.WriteTimeout,
IdleTimeout: cfg.IdleTimeout,
ErrorLog: nil,
}
errCh := make(chan error, 1)
go func() {
log.Info("listening", "addr", cfg.Listen, "data_dir", cfg.DataDir)
if err := srv.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
errCh <- err
}
}()
stop := make(chan os.Signal, 1)
signal.Notify(stop, os.Interrupt, syscall.SIGTERM)
select {
case err := <-errCh:
return fmt.Errorf("http server: %w", err)
case sig := <-stop:
log.Info("shutting down", "signal", sig.String())
}
shutdownCtx, cancel := context.WithTimeout(context.Background(), cfg.ShutdownGrace)
defer cancel()
if err := srv.Shutdown(shutdownCtx); err != nil {
return fmt.Errorf("graceful shutdown: %w", err)
}
log.Info("stopped")
return nil
}