Files
nidus/internal/auth/middleware.go
T
arnefandCopilot 7d4f28de3c Move users, calendars, and address books from config.yaml into the database
BREAKING CHANGE: the users:/config-based collection setup is gone. All
user, calendar, and address-book data now lives in the SQLite DB
(internal/db) and is managed exclusively via nidusctl or the web UI.
Existing deployments must recreate their users after upgrading:
  nidusctl user create <username>
  nidusctl calendar create <username> <name>
  nidusctl addressbook create <username> <name>

- internal/db: new users, calendars, addressbooks tables with FK cascade
  delete; foreign_keys pragma enabled; internal/db/users.go implements
  full CRUD + bcrypt auth (CreateUser, VerifyPassword, ListUsers,
  CreateCalendar/AddressBook, etc).
- internal/config: removed Users/UserConfig entirely.
- internal/auth: Basic Auth now checks credentials via db.DB instead of
  cfg.Users.
- internal/caldav, internal/carddav: ListCalendars/ListAddressBooks and
  Create/Delete now backed by the DB.
- internal/web: login uses db.VerifyPassword; new resources.go adds
  create/delete handlers for calendars/address books at
  /web/resources/{calendar,addressbook}; dashboard gained create forms
  and per-card delete buttons (templ + htmx, no hyperscript).
- tools/nidusctl: new user create/delete/list/passwd commands (masked
  interactive password prompt via golang.org/x/term) plus create/delete/
  list subcommands for calendar/addressbook.
- cmd/server/main.go: pre-creates on-disk collections from the DB at
  startup instead of cfg.Users; warns when no users exist yet.
- Updated tests to seed data via the DB; added resources_test.go for the
  new web UI handlers.
- README.md and .github/copilot-instructions.md updated to document the
  new nidusctl commands and the DB-backed architecture.

Verified end-to-end against a live test server: nidusctl user/calendar/
addressbook create, DAV Basic Auth PROPFIND, web login, dashboard
rendering, and web UI create/delete of resources all confirmed working.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-08-19 12:43:34 +02:00

107 lines
2.9 KiB
Go

package auth
import (
"context"
"log/slog"
"net/http"
"github.com/yourusername/caldav-server/internal/config"
"github.com/yourusername/caldav-server/internal/db"
)
type contextKey string
const userContextKey contextKey = "authenticated_user"
// Middleware wraps an http.Handler with HTTP Basic Auth enforcement.
type Middleware struct {
cfg *config.Config
dbase *db.DB
logger *slog.Logger
}
func NewMiddleware(cfg *config.Config, dbase *db.DB, logger *slog.Logger) *Middleware {
return &Middleware{cfg: cfg, dbase: dbase, logger: logger}
}
// Wrap returns an http.Handler that requires valid Basic Auth credentials
// before delegating to next.
func (m *Middleware) Wrap(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
username, password, ok := r.BasicAuth()
if !ok {
m.challenge(w)
return
}
user, err := m.authenticate(username, password)
if err != nil {
m.logger.Warn("authentication failed",
"username", username,
"remote_addr", r.RemoteAddr,
"error", err)
m.challenge(w)
return
}
m.logger.Debug("authenticated request",
"username", username,
"method", r.Method,
"path", r.URL.Path)
ctx := context.WithValue(r.Context(), userContextKey, &Principal{
Username: username,
DisplayName: user.DisplayName,
Email: user.Email,
})
next.ServeHTTP(w, r.WithContext(ctx))
})
}
// challenge sends a 401 response requesting Basic Auth.
func (m *Middleware) challenge(w http.ResponseWriter) {
w.Header().Set("WWW-Authenticate", `Basic realm="`+m.cfg.Auth.Realm+`"`)
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
w.WriteHeader(http.StatusUnauthorized)
_, _ = w.Write([]byte("Unauthorized"))
}
// authenticate validates username/password against the database.
func (m *Middleware) authenticate(username, password string) (*db.User, error) {
user, err := m.dbase.GetUser(username)
if err != nil {
return nil, errUnauthorized
}
if !m.dbase.VerifyPassword(username, password) {
return nil, errUnauthorized
}
return user, nil
}
// Principal holds the authenticated user's identity.
type Principal struct {
Username string
DisplayName string
Email string
}
// FromContext extracts the Principal from a request context.
// Returns nil if the request was not authenticated.
func FromContext(ctx context.Context) *Principal {
p, _ := ctx.Value(userContextKey).(*Principal)
return p
}
// NewContext returns a copy of ctx carrying p, retrievable via FromContext.
// This is primarily useful for tests of downstream packages that need an
// authenticated context without going through the Basic Auth handshake.
func NewContext(ctx context.Context, p *Principal) context.Context {
return context.WithValue(ctx, userContextKey, p)
}
var errUnauthorized = &authError{msg: "invalid credentials"}
type authError struct{ msg string }
func (e *authError) Error() string { return e.msg }