Kyle Isom
4ddd32b117
Core packages: crypto (Argon2id/AES-256-GCM), config (TOML/viper), db (SQLite/migrations), barrier (encrypted storage), seal (state machine with rate-limited unseal), auth (MCIAS integration with token cache), policy (priority-based ACL engine), engine (interface + registry). Server: HTTPS with TLS 1.2+, REST API, auth/admin middleware, htmx web UI (init, unseal, login, dashboard pages). CLI: cobra/viper subcommands (server, init, status, snapshot) with env var override support (METACRYPT_ prefix). Operational tooling: Dockerfile (multi-stage, non-root), docker-compose, hardened systemd units (service + daily backup timer), install script, backup script with retention pruning, production config examples. Runbook covering installation, configuration, daily operations, backup/restore, monitoring, troubleshooting, and security procedures. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
110 lines
2.9 KiB
Go
110 lines
2.9 KiB
Go
package server
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import (
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"context"
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"net/http"
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"strings"
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"time"
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"git.wntrmute.dev/kyle/metacrypt/internal/auth"
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"git.wntrmute.dev/kyle/metacrypt/internal/seal"
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)
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type contextKey string
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const tokenInfoKey contextKey = "tokenInfo"
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// TokenInfoFromContext extracts the validated token info from the request context.
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func TokenInfoFromContext(ctx context.Context) *auth.TokenInfo {
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info, _ := ctx.Value(tokenInfoKey).(*auth.TokenInfo)
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return info
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}
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// loggingMiddleware logs HTTP requests, stripping sensitive headers.
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func (s *Server) loggingMiddleware(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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start := time.Now()
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sw := &statusWriter{ResponseWriter: w, status: 200}
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next.ServeHTTP(sw, r)
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s.logger.Info("http request",
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"method", r.Method,
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"path", r.URL.Path,
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"status", sw.status,
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"duration", time.Since(start),
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"remote", r.RemoteAddr,
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)
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})
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}
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// requireUnseal rejects requests unless the service is unsealed.
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func (s *Server) requireUnseal(next http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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state := s.seal.State()
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switch state {
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case seal.StateUninitialized:
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http.Error(w, `{"error":"not initialized"}`, http.StatusPreconditionFailed)
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return
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case seal.StateSealed, seal.StateInitializing:
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http.Error(w, `{"error":"sealed"}`, http.StatusServiceUnavailable)
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return
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}
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next(w, r)
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}
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}
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// requireAuth validates the bearer token and injects TokenInfo into context.
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func (s *Server) requireAuth(next http.HandlerFunc) http.HandlerFunc {
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return s.requireUnseal(func(w http.ResponseWriter, r *http.Request) {
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token := extractToken(r)
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if token == "" {
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http.Error(w, `{"error":"unauthorized"}`, http.StatusUnauthorized)
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return
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}
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info, err := s.auth.ValidateToken(token)
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if err != nil {
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http.Error(w, `{"error":"unauthorized"}`, http.StatusUnauthorized)
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return
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}
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ctx := context.WithValue(r.Context(), tokenInfoKey, info)
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next(w, r.WithContext(ctx))
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})
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}
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// requireAdmin requires the authenticated user to have admin role.
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func (s *Server) requireAdmin(next http.HandlerFunc) http.HandlerFunc {
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return s.requireAuth(func(w http.ResponseWriter, r *http.Request) {
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info := TokenInfoFromContext(r.Context())
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if info == nil || !info.IsAdmin {
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http.Error(w, `{"error":"forbidden"}`, http.StatusForbidden)
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return
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}
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next(w, r)
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})
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}
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func extractToken(r *http.Request) string {
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// Check Authorization header first.
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authHeader := r.Header.Get("Authorization")
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if strings.HasPrefix(authHeader, "Bearer ") {
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return strings.TrimPrefix(authHeader, "Bearer ")
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}
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// Fall back to cookie.
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cookie, err := r.Cookie("metacrypt_token")
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if err == nil {
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return cookie.Value
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}
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return ""
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}
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type statusWriter struct {
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http.ResponseWriter
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status int
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}
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func (w *statusWriter) WriteHeader(code int) {
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w.status = code
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w.ResponseWriter.WriteHeader(code)
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}
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