moved auth into middleware
This commit is contained in:
@@ -44,18 +44,19 @@ type (
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// AccessTokenClaims is the claims Auth0 provides in access tokens
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AccessTokenClaims struct {
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Audience string `json:"aud"`
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Audience string `json:"aud"` // TODO: fill in from db
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Expires int64 `json:"exp"`
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Expiration time.Time `json:"-"` // parsed Expires
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FamilyName string `json:"family_name"`
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GivenName string `json:"given_name"`
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IssuedAt int64 `json:"iat"`
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Issuer string `json:"iss"`
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IssuedAt int64 `json:"iat"` // TODO: fill in from db
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Issuer string `json:"iss"` // TODO: fill in from db
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Name string `json:"name"`
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Nickname string `json:"nickname"`
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Picture string `json:"picture"`
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SessionID string `json:"sid"`
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Subject string `json:"sub"`
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UpdatedAt time.Time `json:"updated_at"`
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SessionID string `json:"sid"` // TODO: fill in from db
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Subject string `json:"sub"` // TODO: fill in from db
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UpdatedAt time.Time `json:"updated_at"` // TODO: fill in from db
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}
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)
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@@ -95,7 +95,7 @@ func (a *Authenticator) DeleteOAuthTokens(ctx context.Context, accessToken strin
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return nil
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}
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func (a *Authenticator) GetAccessTokenClaimsAndExpiration(ctx context.Context, accessToken string) (claims AccessTokenClaims, expiration time.Time, err error) {
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func (a *Authenticator) GetAccessTokenClaimsAndExpiration(ctx context.Context, accessToken string) (claims AccessTokenClaims, err error) {
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rows, err := a.db.Query(
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ctx,
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`
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@@ -119,7 +119,7 @@ func (a *Authenticator) GetAccessTokenClaimsAndExpiration(ctx context.Context, a
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},
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)
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if err != nil {
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return AccessTokenClaims{}, time.Time{}, fmt.Errorf("failed to perform query: %w", err)
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return AccessTokenClaims{}, fmt.Errorf("failed to perform query: %w", err)
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}
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type Row struct {
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@@ -135,11 +135,13 @@ func (a *Authenticator) GetAccessTokenClaimsAndExpiration(ctx context.Context, a
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r, err := pgx.CollectExactlyOneRow(rows, pgx.RowToStructByNameLax[Row])
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if err != nil {
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if errors.Is(err, pgx.ErrNoRows) {
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return AccessTokenClaims{}, time.Time{}, consts.ErrNotFound
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return AccessTokenClaims{}, consts.ErrNotFound
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}
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return AccessTokenClaims{}, time.Time{}, fmt.Errorf("failed to scan row: %w", err)
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return AccessTokenClaims{}, fmt.Errorf("failed to scan row: %w", err)
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}
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claims.Expires = r.Expiry.Unix()
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claims.Expiration = r.Expiry
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claims.Name = r.Id_token_custom_claims_name
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claims.Picture = r.Id_token_custom_claims_picture
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claims.Nickname = r.Id_token_custom_claims_nickname
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@@ -147,7 +149,7 @@ func (a *Authenticator) GetAccessTokenClaimsAndExpiration(ctx context.Context, a
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claims.FamilyName = r.Id_token_custom_claims_family_name
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claims.UpdatedAt = r.Id_token_custom_claims_updated_at
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return claims, r.Expiry, nil
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return claims, nil
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}
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func (a *Authenticator) getRefreshTokenForAccessToken(ctx context.Context, accessToken string) (refreshToken, tokenType string, err error) {
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@@ -29,7 +29,6 @@ func Routes(
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r gin.IRouter,
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logger *logging.Logger,
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sq *sse.Queue,
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auth *middleware.Auth,
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) {
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s := &sseRouter{
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log: logger,
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@@ -37,7 +36,7 @@ func Routes(
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users: make(map[string][maxNumOpenConnectionsPerUser]context.CancelFunc),
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}
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r.GET("/", auth.AuthenticateAndAddIdentityGin(), response.Handler(s.serveEvents))
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r.GET("/", response.Handler(s.serveEvents))
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}
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func (r *sseRouter) serveEvents(c *gin.Context) (response.Response, error) {
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@@ -29,7 +29,6 @@ type (
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rawEvents *raw_events.Store
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accts *accounts.Store
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etsy *etsy_platform.Platform
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authMiddleware *middleware.Auth
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}
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// ErrTemplateNotFound is returned if the reason the template failed to compile
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@@ -41,12 +40,12 @@ type (
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func SetupRoutes(
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logger *logging.Logger,
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r gin.IRouter,
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r gin.IRoutes,
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contentDir string,
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rawEvents *raw_events.Store,
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accts *accounts.Store,
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etsy *etsy_platform.Platform,
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authMiddleware *middleware.Auth,
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auth *middleware.Auth,
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) {
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s := &webpageRouter{
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@@ -93,31 +92,10 @@ func SetupRoutes(
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rawEvents: rawEvents,
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accts: accts,
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etsy: etsy,
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authMiddleware: authMiddleware,
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}
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authenticate := s.authMiddleware.AuthenticateAndAddIdentityToRequest()
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r.GET("/*rest", response.Handler(func(c *gin.Context) (response.Response, error) {
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c.Request.URL.Path = c.Request.URL.Path[3:]
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defer func() {
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c.Request.URL.Path = "/ui" + c.Request.URL.Path
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}()
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p := c.Request.URL.Path
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if p == "/" || p == "" {
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c, err := s.authMiddleware.AddIdentityToRequest(c)
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if err != nil {
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return nil, err
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}
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return s.serveTemplate(c)
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}
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if res, err := authenticate(c); res != nil || err != nil {
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return res, err
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}
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return s.serveTemplate(c)
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}))
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r.GET("", response.Handler(s.serveTemplate))
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r.GET("/*rest", response.Handler(auth.Authenticate()), response.Handler(s.serveTemplate))
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}
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// GET /
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@@ -52,91 +52,69 @@ func NewAuth(
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}
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}
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func (a *Auth) AddIdentity(fn response.HandlerFunc) response.HandlerFunc {
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return func(c *gin.Context) (response.Response, error) {
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c, err := a.AddIdentityToRequest(c)
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if err != nil {
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return nil, err
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}
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return fn(c)
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// AddIdentityToRequest will add an Identity to the context that can then be retrieved via GetIdentity.
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func (a *Auth) AddIdentityToRequest(c *gin.Context) {
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if err := a.addIdentityToRequest(c); err != nil {
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c.Error(err)
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c.Abort()
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}
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}
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func (a *Auth) AddIdentityToRequest(c *gin.Context) (*gin.Context, error) {
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func (a *Auth) addIdentityToRequest(c *gin.Context) error {
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r := c.Request
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ck, err := r.Cookie("access_token")
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if err != nil {
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return c, nil
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return nil
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}
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ctx := r.Context()
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accessToken := ck.Value
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claims, expiration, err := a.auth.GetAccessTokenClaimsAndExpiration(ctx, accessToken)
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claims, err := a.auth.GetAccessTokenClaimsAndExpiration(ctx, accessToken)
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if err != nil {
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if errors.Is(err, consts.ErrNotFound) {
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return c, nil
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return nil
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}
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return c, response.Errorf("failed to load authentication details: %w", err)
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return response.Errorf("failed to load authentication details: %w", err)
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}
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expiration := claims.Expiration
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if expiration.Before(time.Now()) {
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return c, nil
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return nil
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}
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user, acct, err := a.accts.GetUserAndAccountByAccessToken(ctx, accessToken)
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if err != nil {
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return c, response.Errorf("failed to load user and account defails: %w", err)
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return response.Errorf("failed to load user and account defails: %w", err)
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}
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c.Request = r.WithContext(SetIdentity(ctx, Identity{
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c.Request = r.WithContext(SetIdentity(c, Identity{
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AccessToken: accessToken,
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Claims: claims,
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User: user,
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Account: acct,
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}))
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return c, nil
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return nil
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}
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// TODO: use the new middleware pattern
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// auth middleware to verify access_token cookie and set custom claims in the request context
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func (a *Auth) AuthenticateAndAddIdentityGin(assertions ...AuthorizationAssertions) gin.HandlerFunc {
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fn := a.AuthenticateAndAddIdentityToRequest(assertions...)
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return response.Handler(fn)
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}
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func (a *Auth) AuthenticateAndAddIdentityToRequest(assertions ...AuthorizationAssertions) response.HandlerFunc {
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// Authenticate should only be used along with and after AddIdentityToRequest
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// Typically used with response.Handler to make a gin.HandlerFunc.
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func (a *Auth) Authenticate(assertions ...AuthorizationAssertions) func(c *gin.Context) (response.Response, error) {
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return func(c *gin.Context) (response.Response, error) {
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r := c.Request
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ck, err := r.Cookie("access_token")
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if err != nil {
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return response.TemporaryRedirect("/").
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JSON("no access_token cookie provided"), nil
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}
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ctx := r.Context()
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accessToken := ck.Value
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claims, expiration, err := a.auth.GetAccessTokenClaimsAndExpiration(ctx, accessToken)
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if err != nil {
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if errors.Is(err, consts.ErrNotFound) {
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u, err := a.newLoginURL(ctx, a.auth, r.URL.String())
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if err != nil {
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return nil, response.Errorf("failed to generate login url: %w", err)
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}
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return response.TemporaryRedirect(u), nil
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}
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return nil, response.Errorf("failed to authenticate: %w", err)
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id, ok := getIdentity(c)
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if !ok {
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return nil, response.Unauthorized().
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HTML([]byte(`
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<h1>Unauthorized</h1>
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<a href="/">Return to app</a>
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`)) // TODO: would be nice to have a better page for this
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}
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expiration := id.Claims.Expiration
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now := time.Now()
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// refresh tokens, when the access token is "old enough"
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@@ -144,7 +122,7 @@ func (a *Auth) AuthenticateAndAddIdentityToRequest(assertions ...AuthorizationAs
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// id token lifetime is 48 hours, allowing a person to use the app everyday comfortably, with wiggle room, without having to log in.
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const idTokenLifetime = 48 * time.Hour
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if refreshFloor := expiration.Add(-(idTokenLifetime / 4)); refreshFloor.Before(now) {
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accessToken, expiration, err = a.auth.RefreshAccessToken(ctx, accessToken)
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accessToken, expiration, err := a.auth.RefreshAccessToken(c, id.AccessToken)
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if err != nil {
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a.log.Warn("failed to refresh access token", "error", err)
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return response.TemporaryRedirect("/").
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@@ -153,65 +131,55 @@ func (a *Auth) AuthenticateAndAddIdentityToRequest(assertions ...AuthorizationAs
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}
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// 'redirect' to same url, to set the new access_token cookie
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return response.TemporaryRedirect(r.URL.String()).
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return response.TemporaryRedirect(c.Request.URL.String()).
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Cookie(cookies.AccessToken(accessToken, expiration)), nil
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}
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// add identity info to request context
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user, acct, err := a.accts.GetUserAndAccountByAccessToken(ctx, accessToken)
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if err != nil {
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return nil, response.Errorf("failed to authorize: %w", err)
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}
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for _, as := range assertions {
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res, err := as(c)
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if res != nil || err != nil {
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if res, err := as(c); res != nil || err != nil {
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return res, err
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}
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}
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id := Identity{
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AccessToken: accessToken,
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Claims: claims,
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User: user,
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Account: acct,
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}
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c.Set(identityKeyString, id)
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c.Request = r.WithContext(SetIdentity(ctx, id))
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return nil, nil
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}
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}
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type identityKey struct{}
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const identityKeyString = "identity"
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// stores identity in context
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func SetIdentity(ctx context.Context, id Identity) context.Context {
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c, ok := ctx.(*gin.Context)
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if ok {
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c.Set(identityKey{}, id)
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ctx = c.Request.Context()
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}
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return context.WithValue(ctx, identityKey{}, id)
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}
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// get identity from context
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func GetIdentity(ctx context.Context) Identity {
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id, _ := getIdentity(ctx)
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return id
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}
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func getIdentity(ctx context.Context) (Identity, bool) {
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id, ok := ctx.Value(identityKey{}).(Identity)
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if ok {
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return id
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return id, true
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}
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c, ok := ctx.(*gin.Context)
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if !ok {
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return Identity{}
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return Identity{}, false
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}
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v, ok := c.Get(identityKeyString)
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v, ok := c.Get(identityKey{})
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if !ok {
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return Identity{}
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return Identity{}, false
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}
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id, _ = v.(Identity)
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id, ok = v.(Identity)
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return id
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return id, ok
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}
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@@ -79,7 +79,11 @@ func NewRouter(
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// kind of a dumb way to capture routes for webpages
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templates_api.SetupRoutes(
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logger.WithGroup("templates"),
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r.Group("/ui"),
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r.Group(
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"/ui",
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stripPrefix("/ui"),
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authMiddleware.AddIdentityToRequest,
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),
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contentDir,
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rawEvents,
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accts,
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@@ -107,13 +111,20 @@ func NewRouter(
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auth,
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)
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sse_api.Routes(
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api.Group("/events"),
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api.Group(
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"/events",
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authMiddleware.AddIdentityToRequest,
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response.Handler(authMiddleware.Authenticate()),
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),
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apiLogger.WithGroup("/events"),
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sq,
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authMiddleware,
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)
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accounts_api.Routes(
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api.Group("/accounts", authMiddleware.AuthenticateAndAddIdentityGin()),
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api.Group(
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"/accounts",
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authMiddleware.AddIdentityToRequest,
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response.Handler(authMiddleware.Authenticate()),
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),
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apiLogger.WithGroup("/accounts"),
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accts,
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unp.Group("/accounts"),
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@@ -158,3 +169,18 @@ func fileServer(urlPrefix, dir string, beforeServe func(c *gin.Context)) gin.Han
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// TODO: need a c.Next()?
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}
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}
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func stripPrefix(prefix string) gin.HandlerFunc {
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return func(c *gin.Context) {
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if !strings.HasPrefix(c.Request.URL.Path, prefix) {
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return
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}
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c.Request.URL.Path = c.Request.URL.Path[len(prefix):]
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defer func() {
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c.Request.URL.Path = prefix + c.Request.URL.Path
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}()
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c.Next()
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}
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}
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Reference in New Issue
Block a user