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oauth2-proxy/pkg/sessions/persistence/manager.go
2021-06-21 21:54:52 -07:00

93 lines
2.5 KiB
Go

package persistence
import (
"fmt"
"net/http"
"time"
"github.com/oauth2-proxy/oauth2-proxy/v7/pkg/apis/options"
"github.com/oauth2-proxy/oauth2-proxy/v7/pkg/apis/sessions"
)
// Manager wraps a Store and handles the implementation details of the
// sessions.SessionStore with its use of session tickets
type Manager struct {
Store Store
Options *options.Cookie
}
// NewManager creates a Manager that can wrap a Store and manage the
// sessions.SessionStore implementation details
func NewManager(store Store, cookieOpts *options.Cookie) *Manager {
return &Manager{
Store: store,
Options: cookieOpts,
}
}
// Save saves a session in a persistent Store. Save will generate (or reuse an
// existing) ticket which manages unique per session encryption & retrieval
// from the persistent data store.
func (m *Manager) Save(rw http.ResponseWriter, req *http.Request, s *sessions.SessionState) error {
if s.CreatedAt == nil || s.CreatedAt.IsZero() {
s.CreatedAtNow()
}
tckt, err := decodeTicketFromRequest(req, m.Options)
if err != nil {
tckt, err = newTicket(m.Options)
if err != nil {
return fmt.Errorf("error creating a session ticket: %v", err)
}
}
err = tckt.saveSession(s, func(key string, val []byte, exp time.Duration) error {
return m.Store.Save(req.Context(), key, val, exp)
})
if err != nil {
return err
}
return tckt.setCookie(rw, req, s)
}
// Load reads sessions.SessionState information from a session store. It will
// use the session ticket from the http.Request's cookie.
func (m *Manager) Load(req *http.Request) (*sessions.SessionState, error) {
tckt, err := decodeTicketFromRequest(req, m.Options)
if err != nil {
return nil, err
}
return tckt.loadSession(
func(key string) ([]byte, error) {
return m.Store.Load(req.Context(), key)
},
m.Store.Lock,
)
}
// Clear clears any saved session information for a given ticket cookie.
// Then it clears all session data for that ticket in the Store.
func (m *Manager) Clear(rw http.ResponseWriter, req *http.Request) error {
tckt, err := decodeTicketFromRequest(req, m.Options)
if err != nil {
// Always clear the cookie, even when we can't load a cookie from
// the request
tckt = &ticket{
options: m.Options,
}
tckt.clearCookie(rw, req)
// Don't raise an error if we didn't have a Cookie
if err == http.ErrNoCookie {
return nil
}
return fmt.Errorf("error decoding ticket to clear session: %v", err)
}
tckt.clearCookie(rw, req)
return tckt.clearSession(func(key string) error {
return m.Store.Clear(req.Context(), key)
})
}