mirror of
https://github.com/pomerium/pomerium.git
synced 2025-07-24 20:18:13 +02:00
authorize: support authenticating with idp tokens (#5484)
* identity: add support for verifying access and identity tokens * allow overriding with policy option * authenticate: add verify endpoints * wip * implement session creation * add verify test * implement idp token login * fix tests * add pr permission * make session ids route-specific * rename method * add test * add access token test * test for newUserFromIDPClaims * more tests * make the session id per-idp * use type for * add test * remove nil checks
This commit is contained in:
Caleb Doxsey
GitHub
parent
6e22b7a19a
commit
b9fd926618
36 changed files with 2791 additions and 885 deletions
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@ -1,16 +1,33 @@
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package config
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import (
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"context"
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"fmt"
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"net/http"
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"strings"
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"time"
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"github.com/google/uuid"
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"google.golang.org/protobuf/types/known/timestamppb"
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"github.com/pomerium/pomerium/internal/encoding"
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"github.com/pomerium/pomerium/internal/encoding/jws"
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"github.com/pomerium/pomerium/internal/httputil"
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"github.com/pomerium/pomerium/internal/jwtutil"
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"github.com/pomerium/pomerium/internal/sessions"
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"github.com/pomerium/pomerium/internal/sessions/cookie"
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"github.com/pomerium/pomerium/internal/sessions/header"
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"github.com/pomerium/pomerium/internal/sessions/queryparam"
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"github.com/pomerium/pomerium/internal/urlutil"
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"github.com/pomerium/pomerium/pkg/authenticateapi"
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"github.com/pomerium/pomerium/pkg/grpc/databroker"
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identitypb "github.com/pomerium/pomerium/pkg/grpc/identity"
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"github.com/pomerium/pomerium/pkg/grpc/session"
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"github.com/pomerium/pomerium/pkg/grpc/user"
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"github.com/pomerium/pomerium/pkg/grpcutil"
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"github.com/pomerium/pomerium/pkg/identity"
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"github.com/pomerium/pomerium/pkg/protoutil"
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"github.com/pomerium/pomerium/pkg/storage"
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)
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// A SessionStore saves and loads sessions based on the options.
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@ -112,3 +129,310 @@ func (store *SessionStore) LoadSessionStateAndCheckIDP(r *http.Request) (*sessio
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func (store *SessionStore) SaveSession(w http.ResponseWriter, r *http.Request, v any) error {
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return store.store.SaveSession(w, r, v)
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}
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type IncomingIDPTokenSessionCreator interface {
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CreateSession(ctx context.Context, cfg *Config, policy *Policy, r *http.Request) (*session.Session, error)
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}
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type incomingIDPTokenSessionCreator struct {
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timeNow func() time.Time
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getRecord func(ctx context.Context, recordType, recordID string) (*databroker.Record, error)
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putRecords func(ctx context.Context, records []*databroker.Record) error
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}
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func NewIncomingIDPTokenSessionCreator(
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getRecord func(ctx context.Context, recordType, recordID string) (*databroker.Record, error),
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putRecords func(ctx context.Context, records []*databroker.Record) error,
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) IncomingIDPTokenSessionCreator {
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return &incomingIDPTokenSessionCreator{timeNow: time.Now, getRecord: getRecord, putRecords: putRecords}
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}
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// CreateSession attempts to create a session for incoming idp access and
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// identity tokens. If no access or identity token is passed ErrNoSessionFound will be returned.
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// If the tokens are not valid an error will be returned.
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func (c *incomingIDPTokenSessionCreator) CreateSession(
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ctx context.Context,
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cfg *Config,
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policy *Policy,
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r *http.Request,
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) (session *session.Session, err error) {
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if rawAccessToken, ok := cfg.GetIncomingIDPAccessTokenForPolicy(policy, r); ok {
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return c.createSessionAccessToken(ctx, cfg, policy, rawAccessToken)
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}
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if rawIdentityToken, ok := cfg.GetIncomingIDPIdentityTokenForPolicy(policy, r); ok {
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return c.createSessionForIdentityToken(ctx, cfg, policy, rawIdentityToken)
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}
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return nil, sessions.ErrNoSessionFound
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}
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func (c *incomingIDPTokenSessionCreator) createSessionAccessToken(
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ctx context.Context,
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cfg *Config,
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policy *Policy,
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rawAccessToken string,
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) (*session.Session, error) {
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idp, err := cfg.Options.GetIdentityProviderForPolicy(policy)
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if err != nil {
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return nil, fmt.Errorf("error getting identity provider to verify access token: %w", err)
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}
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sessionID := getAccessTokenSessionID(idp, rawAccessToken)
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s, err := c.getSession(ctx, sessionID)
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if err == nil {
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return s, nil
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} else if !storage.IsNotFound(err) {
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return nil, err
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}
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authenticateURL, transport, err := cfg.resolveAuthenticateURL()
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if err != nil {
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return nil, fmt.Errorf("error resolving authenticate url to verify access token: %w", err)
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}
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res, err := authenticateapi.New(authenticateURL, transport).VerifyAccessToken(ctx, &authenticateapi.VerifyAccessTokenRequest{
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AccessToken: rawAccessToken,
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IdentityProviderID: idp.GetId(),
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})
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if err != nil {
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return nil, fmt.Errorf("error verifying access token: %w", err)
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} else if !res.Valid {
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return nil, fmt.Errorf("invalid access token")
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}
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s = c.newSessionFromIDPClaims(cfg, sessionID, res.Claims)
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s.OauthToken = &session.OAuthToken{
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TokenType: "Bearer",
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AccessToken: rawAccessToken,
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ExpiresAt: s.ExpiresAt,
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}
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u := c.newUserFromIDPClaims(res.Claims)
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err = c.putSessionAndUser(ctx, s, u)
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if err != nil {
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return nil, fmt.Errorf("error saving session and user: %w", err)
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}
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return s, nil
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}
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func (c *incomingIDPTokenSessionCreator) createSessionForIdentityToken(
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ctx context.Context,
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cfg *Config,
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policy *Policy,
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rawIdentityToken string,
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) (*session.Session, error) {
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idp, err := cfg.Options.GetIdentityProviderForPolicy(policy)
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if err != nil {
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return nil, fmt.Errorf("error getting identity provider to verify identity token: %w", err)
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}
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sessionID := getIdentityTokenSessionID(idp, rawIdentityToken)
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s, err := c.getSession(ctx, sessionID)
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if err == nil {
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return s, nil
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} else if !storage.IsNotFound(err) {
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return nil, err
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}
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authenticateURL, transport, err := cfg.resolveAuthenticateURL()
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if err != nil {
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return nil, fmt.Errorf("error resolving authenticate url to verify identity token: %w", err)
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}
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res, err := authenticateapi.New(authenticateURL, transport).VerifyIdentityToken(ctx, &authenticateapi.VerifyIdentityTokenRequest{
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IdentityToken: rawIdentityToken,
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IdentityProviderID: idp.GetId(),
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})
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if err != nil {
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return nil, fmt.Errorf("error verifying identity token: %w", err)
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} else if !res.Valid {
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return nil, fmt.Errorf("invalid identity token")
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}
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s = c.newSessionFromIDPClaims(cfg, sessionID, res.Claims)
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s.SetRawIDToken(rawIdentityToken)
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u := c.newUserFromIDPClaims(res.Claims)
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err = c.putSessionAndUser(ctx, s, u)
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if err != nil {
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return nil, fmt.Errorf("error saving session and user: %w", err)
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}
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return s, nil
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}
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func (c *incomingIDPTokenSessionCreator) newSessionFromIDPClaims(
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cfg *Config,
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sessionID string,
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claims jwtutil.Claims,
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) *session.Session {
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now := c.timeNow()
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s := new(session.Session)
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s.Id = sessionID
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if userID, ok := claims.GetUserID(); ok {
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s.UserId = userID
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}
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if issuedAt, ok := claims.GetIssuedAt(); ok {
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s.IssuedAt = timestamppb.New(issuedAt)
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} else {
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s.IssuedAt = timestamppb.New(now)
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}
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if expiresAt, ok := claims.GetExpirationTime(); ok {
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s.ExpiresAt = timestamppb.New(expiresAt)
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} else {
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s.ExpiresAt = timestamppb.New(now.Add(cfg.Options.CookieExpire))
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}
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s.AccessedAt = timestamppb.New(now)
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s.AddClaims(identity.Claims(claims).Flatten())
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if aud, ok := claims.GetAudience(); ok {
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s.Audience = aud
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}
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return s
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}
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func (c *incomingIDPTokenSessionCreator) newUserFromIDPClaims(
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claims jwtutil.Claims,
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) *user.User {
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u := new(user.User)
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if userID, ok := claims.GetUserID(); ok {
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u.Id = userID
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}
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if name, ok := claims.GetString("name"); ok {
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u.Name = name
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}
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if email, ok := claims.GetString("email"); ok {
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u.Email = email
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}
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u.Claims = identity.Claims(claims).Flatten().ToPB()
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return u
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}
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func (c *incomingIDPTokenSessionCreator) getSession(ctx context.Context, sessionID string) (*session.Session, error) {
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record, err := c.getRecord(ctx, grpcutil.GetTypeURL(new(session.Session)), sessionID)
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if err != nil {
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return nil, err
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}
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msg, err := record.GetData().UnmarshalNew()
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if err != nil {
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return nil, storage.ErrNotFound
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}
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s, ok := msg.(*session.Session)
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if !ok {
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return nil, storage.ErrNotFound
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}
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return s, nil
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}
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func (c *incomingIDPTokenSessionCreator) putSessionAndUser(ctx context.Context, s *session.Session, u *user.User) error {
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var records []*databroker.Record
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if id := s.GetId(); id != "" {
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records = append(records, &databroker.Record{
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Type: grpcutil.GetTypeURL(s),
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Id: id,
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Data: protoutil.NewAny(s),
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})
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}
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if id := u.GetId(); id != "" {
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records = append(records, &databroker.Record{
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Type: grpcutil.GetTypeURL(u),
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Id: id,
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Data: protoutil.NewAny(u),
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})
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}
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return c.putRecords(ctx, records)
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}
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// GetIncomingIDPAccessTokenForPolicy returns the raw idp access token from a request if there is one.
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func (cfg *Config) GetIncomingIDPAccessTokenForPolicy(policy *Policy, r *http.Request) (rawAccessToken string, ok bool) {
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bearerTokenFormat := BearerTokenFormatUnknown
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if cfg.Options != nil && cfg.Options.BearerTokenFormat != nil {
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bearerTokenFormat = *cfg.Options.BearerTokenFormat
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}
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if policy != nil && policy.BearerTokenFormat != nil {
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bearerTokenFormat = *policy.BearerTokenFormat
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}
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if token := r.Header.Get(httputil.HeaderPomeriumIDPAccessToken); token != "" {
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return token, true
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}
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if auth := r.Header.Get(httputil.HeaderAuthorization); auth != "" {
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prefix := httputil.AuthorizationTypePomeriumIDPAccessToken + " "
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if strings.HasPrefix(strings.ToLower(auth), strings.ToLower(prefix)) {
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return auth[len(prefix):], true
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}
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prefix = "Bearer " + httputil.AuthorizationTypePomeriumIDPAccessToken + "-"
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if strings.HasPrefix(strings.ToLower(auth), strings.ToLower(prefix)) {
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return auth[len(prefix):], true
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}
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prefix = "Bearer "
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if strings.HasPrefix(strings.ToLower(auth), strings.ToLower(prefix)) &&
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bearerTokenFormat == BearerTokenFormatIDPAccessToken {
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return auth[len(prefix):], true
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}
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}
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return "", false
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}
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// GetIncomingIDPAccessTokenForPolicy returns the raw idp identity token from a request if there is one.
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func (cfg *Config) GetIncomingIDPIdentityTokenForPolicy(policy *Policy, r *http.Request) (rawIdentityToken string, ok bool) {
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bearerTokenFormat := BearerTokenFormatDefault
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if cfg.Options != nil && cfg.Options.BearerTokenFormat != nil {
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bearerTokenFormat = *cfg.Options.BearerTokenFormat
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}
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if policy != nil && policy.BearerTokenFormat != nil {
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bearerTokenFormat = *policy.BearerTokenFormat
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}
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if token := r.Header.Get(httputil.HeaderPomeriumIDPIdentityToken); token != "" {
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return token, true
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}
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if auth := r.Header.Get(httputil.HeaderAuthorization); auth != "" {
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prefix := httputil.AuthorizationTypePomeriumIDPIdentityToken + " "
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if strings.HasPrefix(strings.ToLower(auth), strings.ToLower(prefix)) {
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return auth[len(prefix):], true
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}
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prefix = "Bearer " + httputil.AuthorizationTypePomeriumIDPIdentityToken + "-"
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if strings.HasPrefix(strings.ToLower(auth), strings.ToLower(prefix)) {
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return auth[len(prefix):], true
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}
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prefix = "Bearer "
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if strings.HasPrefix(strings.ToLower(auth), strings.ToLower(prefix)) &&
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bearerTokenFormat == BearerTokenFormatIDPIdentityToken {
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return auth[len(prefix):], true
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}
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}
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return "", false
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}
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var accessTokenUUIDNamespace = uuid.MustParse("0194f6f8-e760-76a0-8917-e28ac927a34d")
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func getAccessTokenSessionID(idp *identitypb.Provider, rawAccessToken string) string {
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namespace := accessTokenUUIDNamespace
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// make the session ID per-idp settings
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if idp != nil {
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namespace = uuid.NewSHA1(namespace, []byte(idp.GetId()))
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}
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return uuid.NewSHA1(namespace, []byte(rawAccessToken)).String()
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}
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var identityTokenUUIDNamespace = uuid.MustParse("0194f6f9-aec0-704e-bb4a-51054f17ad17")
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func getIdentityTokenSessionID(idp *identitypb.Provider, rawIdentityToken string) string {
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namespace := identityTokenUUIDNamespace
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// make the session ID per-idp settings
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if idp != nil {
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namespace = uuid.NewSHA1(namespace, []byte(idp.GetId()))
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}
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return uuid.NewSHA1(namespace, []byte(rawIdentityToken)).String()
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}
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