pomerium/internal/identity/onelogin.go
Bobby DeSimone 6f4b26abe2
identity: support oidc UserInfo Response (#529)
Signed-off-by: Bobby DeSimone <bobbydesimone@gmail.com>
2020-03-12 20:56:40 -07:00

102 lines
3.3 KiB
Go

package identity // import "github.com/pomerium/pomerium/internal/identity"
import (
"context"
"errors"
"fmt"
"net/http"
"net/url"
"time"
oidc "github.com/coreos/go-oidc"
"golang.org/x/oauth2"
"github.com/pomerium/pomerium/internal/httputil"
"github.com/pomerium/pomerium/internal/sessions"
"github.com/pomerium/pomerium/internal/version"
)
const defaultOneLoginProviderURL = "https://openid-connect.onelogin.com/oidc"
const defaultOneloginGroupURL = "https://openid-connect.onelogin.com/oidc/me"
// OneLoginProvider provides a standard, OpenID Connect implementation
// of an authorization identity provider.
type OneLoginProvider struct {
*Provider
// non-standard oidc fields
RevokeURL string `json:"revocation_endpoint"`
}
// NewOneLoginProvider creates a new instance of an OpenID Connect provider.
func NewOneLoginProvider(p *Provider) (*OneLoginProvider, error) {
ctx := context.Background()
if p.ProviderURL == "" {
p.ProviderURL = defaultOneLoginProviderURL
}
var err error
p.provider, err = oidc.NewProvider(ctx, p.ProviderURL)
if err != nil {
return nil, err
}
if len(p.Scopes) == 0 {
p.Scopes = []string{oidc.ScopeOpenID, "profile", "email", "groups", "offline_access"}
}
p.verifier = p.provider.Verifier(&oidc.Config{ClientID: p.ClientID})
p.oauth = &oauth2.Config{
ClientID: p.ClientID,
ClientSecret: p.ClientSecret,
Endpoint: p.provider.Endpoint(),
RedirectURL: p.RedirectURL.String(),
Scopes: p.Scopes,
}
olProvider := OneLoginProvider{Provider: p}
if err := p.provider.Claims(&olProvider); err != nil {
return nil, err
}
p.UserGroupFn = olProvider.UserGroups
return &olProvider, nil
}
// Revoke revokes the access token a given session state.
// https://developers.onelogin.com/openid-connect/api/revoke-session
func (p *OneLoginProvider) Revoke(ctx context.Context, token *oauth2.Token) error {
params := url.Values{}
params.Add("client_id", p.ClientID)
params.Add("client_secret", p.ClientSecret)
params.Add("token", token.AccessToken)
params.Add("token_type_hint", "access_token")
err := httputil.Client(ctx, http.MethodPost, p.RevokeURL, version.UserAgent(), nil, params, nil)
if err != nil && err != httputil.ErrTokenRevoked {
return fmt.Errorf("identity/onelogin: revocation error %w", err)
}
return nil
}
// UserGroups returns a slice of group names a given user is in.
// https://developers.onelogin.com/openid-connect/api/user-info
func (p *OneLoginProvider) UserGroups(ctx context.Context, s *sessions.State) ([]string, error) {
if s == nil || s.AccessToken == nil {
return nil, errors.New("identity/onelogin: session cannot be nil")
}
var response struct {
User string `json:"sub"`
Email string `json:"email"`
PreferredUsername string `json:"preferred_username"`
Name string `json:"name"`
UpdatedAt time.Time `json:"updated_at"`
GivenName string `json:"given_name"`
FamilyName string `json:"family_name"`
Groups []string `json:"groups"`
}
headers := map[string]string{"Authorization": fmt.Sprintf("Bearer %s", s.AccessToken.AccessToken)}
err := httputil.Client(ctx, http.MethodGet, defaultOneloginGroupURL, version.UserAgent(), headers, nil, &response)
if err != nil {
return nil, err
}
return response.Groups, nil
}