118 lines
2.6 KiB
Go
118 lines
2.6 KiB
Go
package oidc
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import (
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"encoding/gob"
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"net/http"
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"github.com/coreos/go-oidc"
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"github.com/pkg/errors"
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"gitlab.com/wpetit/goweb/logger"
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"gitlab.com/wpetit/goweb/middleware/container"
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"gitlab.com/wpetit/goweb/service/session"
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)
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const (
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SessionIDTokenKey = "oidc-id-token"
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SessionOIDCStateKey = "oidc-state"
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SessionOIDCNonceKey = "oidc-nonce"
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)
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func init() {
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gob.Register(&oidc.IDToken{})
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}
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func Middleware(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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if _, err := IDToken(w, r); err != nil {
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logger.Error(r.Context(), "could not retrieve idtoken", logger.E(errors.WithStack(err)))
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ctn := container.Must(r.Context())
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client := Must(ctn)
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client.Login(w, r)
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return
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}
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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func HandleCallback(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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ctn := container.Must(ctx)
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client := Must(ctn)
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_, rawIDToken, err := client.Validate(w, r)
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if err != nil {
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logger.Error(ctx, "could not validate oidc token", logger.E(errors.WithStack(err)))
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http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
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return
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}
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sess, err := session.Must(ctn).Get(w, r)
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if err != nil {
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panic(errors.Wrap(err, "could not retrieve session"))
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}
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sess.Set(SessionIDTokenKey, rawIDToken)
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if err := sess.Save(w, r); err != nil {
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panic(errors.Wrap(err, "could not save session"))
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}
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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func RawIDToken(w http.ResponseWriter, r *http.Request) (string, error) {
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ctx := r.Context()
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ctn, err := container.From(ctx)
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if err != nil {
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return "", errors.Wrap(err, "could not retrieve service container")
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}
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sess, err := session.Must(ctn).Get(w, r)
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if err != nil {
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return "", errors.Wrap(err, "could not retrieve session")
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}
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rawIDToken, ok := sess.Get(SessionIDTokenKey).(string)
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if !ok || rawIDToken == "" {
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return "", errors.New("invalid id token")
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}
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return rawIDToken, nil
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}
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func IDToken(w http.ResponseWriter, r *http.Request) (*oidc.IDToken, error) {
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rawIDToken, err := RawIDToken(w, r)
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if err != nil {
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return nil, errors.Wrap(err, "could not retrieve raw idtoken")
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}
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ctx := r.Context()
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ctn, err := container.From(ctx)
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if err != nil {
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return nil, errors.Wrap(err, "could not retrieve service container")
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}
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client, err := From(ctn)
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if err != nil {
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return nil, errors.Wrap(err, "could not retrieve oidc service")
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}
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idToken, err := client.verifier.Verify(ctx, rawIDToken)
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if err != nil {
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return nil, errors.Wrap(err, "could not verify id token")
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}
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return idToken, nil
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}
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