11770b4058
Implement a full OAuth2 2.0 and OpenID Connect 1.0 authorization server with support for authorization code flow (with PKCE), refresh token rotation, device authorization grant, dynamic client registration, token introspection, and token revocation. Includes database schema, coredata layer, service logic, HTTP handlers, OIDC discovery endpoint, and JWKS publishing. Signed-off-by: Bryan Frimin <bryan@getprobo.com>
548 lines
16 KiB
Go
548 lines
16 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice appear in all copies.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
|
|
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
|
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
|
|
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
// PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
package connect_v1
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"time"
|
|
|
|
"go.gearno.de/kit/httpserver"
|
|
"go.gearno.de/kit/log"
|
|
"go.probo.inc/probo/pkg/baseurl"
|
|
"go.probo.inc/probo/pkg/bearertoken"
|
|
"go.probo.inc/probo/pkg/coredata"
|
|
"go.probo.inc/probo/pkg/gid"
|
|
"go.probo.inc/probo/pkg/iam"
|
|
"go.probo.inc/probo/pkg/iam/oauth2server"
|
|
"go.probo.inc/probo/pkg/securecookie"
|
|
"go.probo.inc/probo/pkg/server/api/authn"
|
|
"go.probo.inc/probo/pkg/server/api/connect/v1/types"
|
|
"go.probo.inc/probo/pkg/uri"
|
|
)
|
|
|
|
var (
|
|
oauth2ClientContextKey = &ctxKey{name: "oauth2_client"}
|
|
oauth2AccessTokenContextKey = &ctxKey{name: "oauth2_access_token"}
|
|
)
|
|
|
|
type OAuth2Handler struct {
|
|
iam *iam.Service
|
|
sessionCookie *authn.Cookie
|
|
baseURL *baseurl.BaseURL
|
|
logger *log.Logger
|
|
}
|
|
|
|
func NewOAuth2Handler(
|
|
svc *iam.Service,
|
|
cookieConfig securecookie.Config,
|
|
baseURL *baseurl.BaseURL,
|
|
logger *log.Logger,
|
|
) *OAuth2Handler {
|
|
return &OAuth2Handler{
|
|
iam: svc,
|
|
sessionCookie: authn.NewCookie(&cookieConfig),
|
|
baseURL: baseURL,
|
|
logger: logger.Named("oauth2"),
|
|
}
|
|
}
|
|
|
|
// oauth2ClientFromContext returns the authenticated OAuth2 client from context.
|
|
func oauth2ClientFromContext(r *http.Request) *coredata.OAuth2Client {
|
|
client, _ := r.Context().Value(oauth2ClientContextKey).(*coredata.OAuth2Client)
|
|
return client
|
|
}
|
|
|
|
// oauth2AccessTokenFromContext returns the validated OAuth2 access token from context.
|
|
func oauth2AccessTokenFromContext(r *http.Request) *coredata.OAuth2AccessToken {
|
|
token, _ := r.Context().Value(oauth2AccessTokenContextKey).(*coredata.OAuth2AccessToken)
|
|
return token
|
|
}
|
|
|
|
// ClientAuthMiddleware authenticates the OAuth2 client from HTTP Basic auth
|
|
// or POST body credentials and stores it in the request context.
|
|
func (h *OAuth2Handler) ClientAuthMiddleware(next http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
client, err := h.authenticateClient(r)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.ErrInvalidClient)
|
|
return
|
|
}
|
|
|
|
ctx := context.WithValue(r.Context(), oauth2ClientContextKey, client)
|
|
next.ServeHTTP(w, r.WithContext(ctx))
|
|
})
|
|
}
|
|
|
|
// BearerTokenMiddleware validates the OAuth2 bearer token from the
|
|
// Authorization header and stores the access token in the request context.
|
|
func (h *OAuth2Handler) BearerTokenMiddleware(next http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
|
tokenValue, err := bearertoken.Parse(r.Header.Get("Authorization"))
|
|
if err != nil {
|
|
w.Header().Set("WWW-Authenticate", `Bearer error="invalid_token"`)
|
|
http.Error(w, "unauthorized", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
accessToken, err := h.iam.OAuth2ServerService.LoadAccessToken(r.Context(), tokenValue)
|
|
if err != nil {
|
|
w.Header().Set("WWW-Authenticate", `Bearer error="invalid_token"`)
|
|
http.Error(w, "unauthorized", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
ctx := context.WithValue(r.Context(), oauth2AccessTokenContextKey, accessToken)
|
|
next.ServeHTTP(w, r.WithContext(ctx))
|
|
})
|
|
}
|
|
|
|
func (h *OAuth2Handler) endpoints() oauth2server.Endpoints {
|
|
api := h.baseURL.String() + "/api/connect/v1"
|
|
|
|
return oauth2server.Endpoints{
|
|
Authorization: uri.URI(api + "/oauth2/authorize"),
|
|
Token: uri.URI(api + "/oauth2/token"),
|
|
Userinfo: uri.URI(api + "/oauth2/userinfo"),
|
|
JWKS: uri.URI(api + "/oauth2/jwks"),
|
|
Registration: uri.URI(api + "/oauth2/register"),
|
|
Introspection: uri.URI(api + "/oauth2/introspect"),
|
|
Revocation: uri.URI(api + "/oauth2/revoke"),
|
|
DeviceAuthorization: uri.URI(api + "/oauth2/device"),
|
|
}
|
|
}
|
|
|
|
// --- Handlers ---
|
|
|
|
// DiscoveryHandler serves the OpenID Connect Discovery document.
|
|
// GET /.well-known/openid-configuration
|
|
func (h *OAuth2Handler) DiscoveryHandler(w http.ResponseWriter, r *http.Request) {
|
|
metadata := h.iam.OAuth2ServerService.Metadata(h.endpoints())
|
|
|
|
PublicCache(w, 1*time.Hour)
|
|
httpserver.RenderJSON(w, http.StatusOK, metadata)
|
|
}
|
|
|
|
// JWKSHandler serves the JSON Web Key Set.
|
|
// GET /oauth2/jwks
|
|
func (h *OAuth2Handler) JWKSHandler(w http.ResponseWriter, r *http.Request) {
|
|
jwks := h.iam.OAuth2ServerService.JWKS()
|
|
|
|
PublicCache(w, 1*time.Hour)
|
|
httpserver.RenderJSON(w, http.StatusOK, jwks)
|
|
}
|
|
|
|
// AuthorizeHandler handles the authorization endpoint.
|
|
// GET /oauth2/authorize
|
|
func (h *OAuth2Handler) AuthorizeHandler(w http.ResponseWriter, r *http.Request) {
|
|
identity := authn.IdentityFromContext(r.Context())
|
|
if identity == nil {
|
|
continueURL := h.baseURL.WithPath("/api/connect/v1/oauth2/authorize").
|
|
WithQueryValues(r.URL.Query()).
|
|
MustString()
|
|
loginURL := h.baseURL.WithPath("/auth/login").
|
|
WithQuery("continue", continueURL).
|
|
MustString()
|
|
http.Redirect(w, r, loginURL, http.StatusFound)
|
|
return
|
|
}
|
|
|
|
var in types.OAuth2AuthorizeInput
|
|
if err := in.DecodeQuery(r.URL.Query()); err != nil {
|
|
h.handleAuthorizeError(w, r, oauth2server.NewError(oauth2server.ErrInvalidRequest, oauth2server.WithError(err)), "", "")
|
|
return
|
|
}
|
|
|
|
session := authn.SessionFromContext(r.Context())
|
|
authTime := time.Now()
|
|
if session != nil {
|
|
authTime = session.CreatedAt
|
|
}
|
|
|
|
code, err := h.iam.OAuth2ServerService.Authorize(
|
|
r.Context(),
|
|
&oauth2server.AuthorizeRequest{
|
|
IdentityID: identity.ID,
|
|
SessionID: session.ID,
|
|
ResponseType: in.ResponseType,
|
|
ClientID: in.ClientID,
|
|
RedirectURI: in.RedirectURI,
|
|
Scopes: in.Scopes,
|
|
CodeChallenge: in.CodeChallenge,
|
|
CodeChallengeMethod: in.CodeChallengeMethod,
|
|
Nonce: in.Nonce,
|
|
State: in.State,
|
|
AuthTime: authTime,
|
|
},
|
|
)
|
|
|
|
if consentErr, ok := errors.AsType[*oauth2server.ConsentRequiredError](err); ok {
|
|
consentURL := h.baseURL.WithPath("/auth/consent").
|
|
WithQuery("consent_id", consentErr.ConsentID.String()).
|
|
MustString()
|
|
http.Redirect(w, r, consentURL, http.StatusFound)
|
|
return
|
|
}
|
|
|
|
if err != nil {
|
|
oauthErr := toOAuth2Error(err)
|
|
h.handleAuthorizeError(w, r, oauthErr, in.RedirectURI, in.State)
|
|
return
|
|
}
|
|
|
|
redirectWithCode(w, r, in.RedirectURI, code, in.State)
|
|
}
|
|
|
|
func (h *OAuth2Handler) TokenHandler(w http.ResponseWriter, r *http.Request) {
|
|
if err := r.ParseForm(); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidRequest, oauth2server.WithDescription("invalid form data")))
|
|
return
|
|
}
|
|
|
|
var (
|
|
grantType coredata.OAuth2GrantType
|
|
value = r.FormValue("grant_type")
|
|
)
|
|
|
|
if err := grantType.UnmarshalText([]byte(value)); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.ErrUnsupportedGrantType)
|
|
return
|
|
}
|
|
|
|
switch grantType {
|
|
case coredata.OAuth2GrantTypeAuthorizationCode:
|
|
h.handleAuthorizationCodeGrant(w, r)
|
|
case coredata.OAuth2GrantTypeRefreshToken:
|
|
h.handleRefreshTokenGrant(w, r)
|
|
case coredata.OAuth2GrantTypeDeviceCode:
|
|
h.handleDeviceCodeGrant(w, r)
|
|
default:
|
|
panic(fmt.Sprintf("unsupported grant type: %s", grantType))
|
|
}
|
|
}
|
|
|
|
func (h *OAuth2Handler) IntrospectHandler(w http.ResponseWriter, r *http.Request) {
|
|
var (
|
|
client = oauth2ClientFromContext(r)
|
|
in = types.OAuth2IntrospectInput{}
|
|
)
|
|
|
|
if err := in.DecodeForm(r); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidRequest, oauth2server.WithError(err)))
|
|
return
|
|
}
|
|
|
|
result, err := h.iam.OAuth2ServerService.IntrospectToken(
|
|
r.Context(),
|
|
client.ID,
|
|
in.Token,
|
|
)
|
|
if err != nil || result == nil {
|
|
httpserver.RenderJSON(w, http.StatusOK, types.InactiveIntrospectResponse())
|
|
return
|
|
}
|
|
|
|
httpserver.RenderJSON(w, http.StatusOK, types.ActiveIntrospectResponse(result))
|
|
}
|
|
|
|
func (h *OAuth2Handler) RevokeHandler(w http.ResponseWriter, r *http.Request) {
|
|
var (
|
|
client = oauth2ClientFromContext(r)
|
|
in = types.OAuth2RevokeInput{}
|
|
)
|
|
|
|
if err := in.DecodeForm(r); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidRequest, oauth2server.WithError(err)))
|
|
return
|
|
}
|
|
|
|
if err := h.iam.OAuth2ServerService.RevokeToken(
|
|
r.Context(),
|
|
client.ID,
|
|
in.Token,
|
|
in.TokenTypeHint,
|
|
); err != nil {
|
|
h.logger.ErrorCtx(r.Context(), "cannot revoke token", log.Error(err))
|
|
w.Header().Set("Retry-After", "30")
|
|
w.WriteHeader(http.StatusServiceUnavailable)
|
|
return
|
|
}
|
|
|
|
w.WriteHeader(http.StatusOK)
|
|
}
|
|
|
|
// DeviceAuthHandler handles the device authorization endpoint (RFC 8628).
|
|
// POST /oauth2/device
|
|
func (h *OAuth2Handler) DeviceAuthHandler(w http.ResponseWriter, r *http.Request) {
|
|
in := types.OAuth2DeviceAuthInput{}
|
|
if err := in.DecodeForm(r); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidRequest, oauth2server.WithError(err)))
|
|
return
|
|
}
|
|
|
|
deviceCodeValue, dc, err := h.iam.OAuth2ServerService.CreateDeviceCode(
|
|
r.Context(),
|
|
in.ClientID,
|
|
in.Scopes,
|
|
)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, err)
|
|
return
|
|
}
|
|
|
|
verificationURI := uri.URI(h.baseURL.WithPath("/auth/device").MustString())
|
|
verificationURIComplete := uri.URI(
|
|
h.baseURL.WithPath("/auth/device").
|
|
WithQuery("user_code", string(dc.UserCode)).
|
|
MustString(),
|
|
)
|
|
|
|
httpserver.RenderJSON(
|
|
w,
|
|
http.StatusOK,
|
|
&types.OAuth2DeviceAuthResponse{
|
|
DeviceCode: deviceCodeValue,
|
|
UserCode: dc.UserCode.Format(),
|
|
VerificationURI: verificationURI,
|
|
VerificationURIComplete: verificationURIComplete,
|
|
ExpiresIn: int(time.Until(dc.ExpiresAt).Seconds()),
|
|
Interval: dc.PollInterval,
|
|
},
|
|
)
|
|
}
|
|
|
|
// RegisterHandler handles dynamic client registration (RFC 7591).
|
|
// POST /oauth2/register
|
|
func (h *OAuth2Handler) RegisterHandler(w http.ResponseWriter, r *http.Request) {
|
|
identity := authn.IdentityFromContext(r.Context())
|
|
|
|
var in types.OAuth2RegisterInput
|
|
if err := json.NewDecoder(r.Body).Decode(&in); err != nil {
|
|
h.renderOAuth2ErrorResponse(
|
|
w,
|
|
r,
|
|
oauth2server.NewError(oauth2server.ErrInvalidRequest, oauth2server.WithDescription("invalid JSON body")),
|
|
)
|
|
return
|
|
}
|
|
|
|
if len(in.GrantTypes) == 0 {
|
|
in.GrantTypes = []coredata.OAuth2GrantType{coredata.OAuth2GrantTypeAuthorizationCode}
|
|
}
|
|
if len(in.ResponseTypes) == 0 {
|
|
in.ResponseTypes = []coredata.OAuth2ResponseType{coredata.OAuth2ResponseTypeCode}
|
|
}
|
|
if in.TokenEndpointAuthMethod == "" {
|
|
in.TokenEndpointAuthMethod = coredata.OAuth2ClientTokenEndpointAuthMethodClientSecretBasic
|
|
}
|
|
if in.Visibility == "" {
|
|
in.Visibility = coredata.OAuth2ClientVisibilityPrivate
|
|
}
|
|
if len(in.Scopes) == 0 {
|
|
in.Scopes = coredata.OAuth2Scopes{
|
|
coredata.OAuth2ScopeOpenID,
|
|
coredata.OAuth2ScopeProfile,
|
|
coredata.OAuth2ScopeEmail,
|
|
}
|
|
}
|
|
|
|
clientID, clientSecret, err := h.iam.OAuth2ServerService.RegisterClient(
|
|
r.Context(),
|
|
&oauth2server.RegisterClientRequest{
|
|
IdentityID: identity.ID,
|
|
OrganizationID: in.OrganizationID,
|
|
ClientName: in.ClientName,
|
|
Visibility: in.Visibility,
|
|
RedirectURIs: in.RedirectURIs,
|
|
GrantTypes: in.GrantTypes,
|
|
ResponseTypes: in.ResponseTypes,
|
|
TokenEndpointAuthMethod: in.TokenEndpointAuthMethod,
|
|
LogoURI: in.LogoURI,
|
|
ClientURI: in.ClientURI,
|
|
Contacts: in.Contacts,
|
|
Scopes: in.Scopes,
|
|
},
|
|
)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, err)
|
|
return
|
|
}
|
|
|
|
httpserver.RenderJSON(
|
|
w,
|
|
http.StatusCreated,
|
|
&types.OAuth2RegisterResponse{
|
|
ClientID: clientID.String(),
|
|
ClientSecret: clientSecret,
|
|
ClientName: in.ClientName,
|
|
Visibility: in.Visibility,
|
|
RedirectURIs: in.RedirectURIs,
|
|
GrantTypes: in.GrantTypes,
|
|
ResponseTypes: in.ResponseTypes,
|
|
TokenEndpointAuthMethod: in.TokenEndpointAuthMethod,
|
|
Scopes: in.Scopes,
|
|
},
|
|
)
|
|
}
|
|
|
|
// UserInfoHandler serves the OIDC UserInfo endpoint.
|
|
// GET /oauth2/userinfo
|
|
func (h *OAuth2Handler) UserInfoHandler(w http.ResponseWriter, r *http.Request) {
|
|
accessToken := oauth2AccessTokenFromContext(r)
|
|
|
|
claims, err := h.iam.OAuth2ServerService.UserInfo(
|
|
r.Context(),
|
|
accessToken.IdentityID,
|
|
accessToken.Scopes,
|
|
)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.ErrServerError)
|
|
return
|
|
}
|
|
|
|
httpserver.RenderJSON(w, http.StatusOK, claims)
|
|
}
|
|
|
|
// --- Internal helpers ---
|
|
|
|
func (h *OAuth2Handler) authenticateClient(r *http.Request) (*coredata.OAuth2Client, error) {
|
|
if err := r.ParseForm(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var clientIDStr, clientSecret string
|
|
|
|
// Try HTTP Basic auth first.
|
|
if username, password, ok := r.BasicAuth(); ok {
|
|
clientIDStr = username
|
|
clientSecret = password
|
|
} else {
|
|
// Fall back to POST body.
|
|
clientIDStr = r.FormValue("client_id")
|
|
clientSecret = r.FormValue("client_secret")
|
|
}
|
|
|
|
if clientIDStr == "" {
|
|
return nil, oauth2server.ErrInvalidClient
|
|
}
|
|
|
|
clientID, err := gid.ParseGID(clientIDStr)
|
|
if err != nil {
|
|
return nil, oauth2server.ErrInvalidClient
|
|
}
|
|
|
|
return h.iam.OAuth2ServerService.AuthenticateClient(r.Context(), clientID, clientSecret)
|
|
}
|
|
|
|
func (h *OAuth2Handler) handleAuthorizationCodeGrant(w http.ResponseWriter, r *http.Request) {
|
|
client, err := h.authenticateClient(r)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.ErrInvalidClient)
|
|
return
|
|
}
|
|
|
|
var in types.OAuth2AuthorizationCodeGrantInput
|
|
if err := in.DecodeForm(r); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidGrant, oauth2server.WithError(err)))
|
|
return
|
|
}
|
|
|
|
result, err := h.iam.OAuth2ServerService.ExchangeAuthorizationCode(
|
|
r.Context(),
|
|
client,
|
|
in.Code,
|
|
in.RedirectURI,
|
|
in.CodeVerifier,
|
|
)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidGrant, oauth2server.WithDescription("invalid or expired code")))
|
|
return
|
|
}
|
|
|
|
NoCache(w)
|
|
httpserver.RenderJSON(w, http.StatusOK, tokenResultToResponse(result))
|
|
}
|
|
|
|
func (h *OAuth2Handler) handleRefreshTokenGrant(w http.ResponseWriter, r *http.Request) {
|
|
client, err := h.authenticateClient(r)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.ErrInvalidClient)
|
|
return
|
|
}
|
|
|
|
var in types.OAuth2RefreshTokenGrantInput
|
|
if err := in.DecodeForm(r); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidGrant, oauth2server.WithError(err)))
|
|
return
|
|
}
|
|
|
|
result, err := h.iam.OAuth2ServerService.RefreshToken(r.Context(), client, in.RefreshToken)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidGrant, oauth2server.WithDescription("invalid or expired refresh token")))
|
|
return
|
|
}
|
|
|
|
NoCache(w)
|
|
httpserver.RenderJSON(w, http.StatusOK, tokenResultToResponse(result))
|
|
}
|
|
|
|
func (h *OAuth2Handler) handleDeviceCodeGrant(w http.ResponseWriter, r *http.Request) {
|
|
var in types.OAuth2DeviceCodeGrantInput
|
|
if err := in.DecodeForm(r); err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, oauth2server.NewError(oauth2server.ErrInvalidRequest, oauth2server.WithError(err)))
|
|
return
|
|
}
|
|
|
|
result, err := h.iam.OAuth2ServerService.PollDeviceCode(
|
|
r.Context(),
|
|
in.ClientID,
|
|
in.DeviceCode,
|
|
)
|
|
if err != nil {
|
|
h.renderOAuth2ErrorResponse(w, r, err)
|
|
return
|
|
}
|
|
|
|
NoCache(w)
|
|
httpserver.RenderJSON(w, http.StatusOK, tokenResultToResponse(result))
|
|
}
|
|
|
|
func tokenResultToResponse(r *oauth2server.TokenResult) *types.OAuth2TokenResponse {
|
|
return &types.OAuth2TokenResponse{
|
|
AccessToken: r.AccessToken,
|
|
TokenType: r.TokenType,
|
|
ExpiresIn: r.ExpiresIn,
|
|
RefreshToken: r.RefreshToken,
|
|
IDToken: r.IDToken,
|
|
Scope: r.Scope,
|
|
}
|
|
}
|
|
|
|
func redirectWithCode(w http.ResponseWriter, r *http.Request, redirectURI, code, state string) {
|
|
u, _ := url.Parse(redirectURI)
|
|
q := u.Query()
|
|
q.Set("code", code)
|
|
if state != "" {
|
|
q.Set("state", state)
|
|
}
|
|
u.RawQuery = q.Encode()
|
|
|
|
http.Redirect(w, r, u.String(), http.StatusFound)
|
|
}
|