/
external.go
369 lines (330 loc) · 10.5 KB
/
external.go
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package api
import (
"context"
"fmt"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"github.com/gobuffalo/uuid"
jwt "github.com/golang-jwt/jwt/v4"
"github.com/netlify/gotrue/api/provider"
"github.com/netlify/gotrue/models"
"github.com/netlify/gotrue/storage"
"github.com/sirupsen/logrus"
)
type ExternalProviderClaims struct {
NetlifyMicroserviceClaims
Provider string `json:"provider"`
InviteToken string `json:"invite_token,omitempty"`
Referrer string `json:"referrer,omitempty"`
}
// SignupParams are the parameters the Signup endpoint accepts
type ExternalSignupParams struct {
Provider string `json:"provider"`
Code string `json:"code"`
}
func (a *API) ExternalProviderRedirect(w http.ResponseWriter, r *http.Request) error {
ctx := r.Context()
config := a.getConfig(ctx)
providerType := r.URL.Query().Get("provider")
provider, err := a.Provider(ctx, providerType)
if err != nil {
return badRequestError("Unsupported provider: %+v", err).WithInternalError(err)
}
inviteToken := r.URL.Query().Get("invite_token")
if inviteToken != "" {
_, userErr := models.FindUserByConfirmationToken(a.db, inviteToken)
if userErr != nil {
if models.IsNotFoundError(userErr) {
return notFoundError(userErr.Error())
}
return internalServerError("Database error finding user").WithInternalError(userErr)
}
}
referrer := a.getReferrer(r)
log := getLogEntry(r)
log.WithField("provider", providerType).Info("Redirecting to external provider")
token := jwt.NewWithClaims(jwt.SigningMethodHS256, ExternalProviderClaims{
NetlifyMicroserviceClaims: NetlifyMicroserviceClaims{
StandardClaims: jwt.StandardClaims{
ExpiresAt: time.Now().Add(5 * time.Minute).Unix(),
},
SiteURL: config.SiteURL,
InstanceID: getInstanceID(ctx).String(),
NetlifyID: getNetlifyID(ctx),
},
Provider: providerType,
InviteToken: inviteToken,
Referrer: referrer,
})
tokenString, err := token.SignedString([]byte(a.config.OperatorToken))
if err != nil {
return internalServerError("Error creating state").WithInternalError(err)
}
http.Redirect(w, r, provider.AuthCodeURL(tokenString), http.StatusFound)
return nil
}
func (a *API) ExternalProviderCallback(w http.ResponseWriter, r *http.Request) error {
a.redirectErrors(a.internalExternalProviderCallback, w, r)
return nil
}
func (a *API) internalExternalProviderCallback(w http.ResponseWriter, r *http.Request) error {
ctx := r.Context()
config := a.getConfig(ctx)
instanceID := getInstanceID(ctx)
providerType := getExternalProviderType(ctx)
var userData *provider.UserProvidedData
if providerType == "saml" {
samlUserData, err := a.samlCallback(r, ctx)
if err != nil {
return err
}
userData = samlUserData
} else {
oAuthUserData, err := a.oAuthCallback(ctx, r, providerType)
if err != nil {
return err
}
userData = oAuthUserData
}
var user *models.User
var token *AccessTokenResponse
err := a.db.Transaction(func(tx *storage.Connection) error {
var terr error
inviteToken := getInviteToken(ctx)
if inviteToken != "" {
if user, terr = a.processInvite(ctx, tx, userData, instanceID, inviteToken, providerType); terr != nil {
return terr
}
} else {
aud := a.requestAud(ctx, r)
// search user using all available emails
var emailData provider.Email
for _, e := range userData.Emails {
if e.Verified || config.Mailer.Autoconfirm {
user, terr = models.FindUserByEmailAndAudience(tx, instanceID, e.Email, aud)
if terr != nil && !models.IsNotFoundError(terr) {
return internalServerError("Error checking for duplicate users").WithInternalError(terr)
}
if user != nil {
emailData = e
break
}
}
}
if user == nil {
if config.DisableSignup {
return forbiddenError("Signups not allowed for this instance")
}
// prefer primary email for new signups
emailData = userData.Emails[0]
for _, e := range userData.Emails {
if e.Primary {
emailData = e
break
}
}
params := &SignupParams{
Provider: providerType,
Email: emailData.Email,
Aud: aud,
Data: make(map[string]interface{}),
}
for k, v := range userData.Metadata {
if v != "" {
params.Data[k] = v
}
}
user, terr = a.signupNewUser(ctx, tx, params)
if terr != nil {
return terr
}
}
if !user.IsConfirmed() {
if !emailData.Verified && !config.Mailer.Autoconfirm {
mailer := a.Mailer(ctx)
referrer := a.getReferrer(r)
if terr = sendConfirmation(tx, user, mailer, config.SMTP.MaxFrequency, referrer); terr != nil {
return internalServerError("Error sending confirmation mail").WithInternalError(terr)
}
// email must be verified to issue a token
return nil
}
if terr := models.NewAuditLogEntry(tx, instanceID, user, models.UserSignedUpAction, nil); terr != nil {
return terr
}
if terr = triggerEventHooks(ctx, tx, SignupEvent, user, instanceID, config); terr != nil {
return terr
}
// fall through to auto-confirm and issue token
if terr = user.Confirm(tx); terr != nil {
return internalServerError("Error updating user").WithInternalError(terr)
}
} else {
if terr := models.NewAuditLogEntry(tx, instanceID, user, models.LoginAction, nil); terr != nil {
return terr
}
if terr = triggerEventHooks(ctx, tx, LoginEvent, user, instanceID, config); terr != nil {
return terr
}
}
}
token, terr = a.issueRefreshToken(ctx, tx, user)
if terr != nil {
return oauthError("server_error", terr.Error())
}
return nil
})
if err != nil {
return err
}
rurl := a.getExternalRedirectURL(r)
if token != nil {
q := url.Values{}
q.Set("access_token", token.Token)
q.Set("token_type", token.TokenType)
q.Set("expires_in", strconv.Itoa(token.ExpiresIn))
q.Set("refresh_token", token.RefreshToken)
rurl += "#" + q.Encode()
}
http.Redirect(w, r, rurl, http.StatusFound)
return nil
}
func (a *API) processInvite(ctx context.Context, tx *storage.Connection, userData *provider.UserProvidedData, instanceID uuid.UUID, inviteToken, providerType string) (*models.User, error) {
config := a.getConfig(ctx)
user, err := models.FindUserByConfirmationToken(tx, inviteToken)
if err != nil {
if models.IsNotFoundError(err) {
return nil, notFoundError(err.Error())
}
return nil, internalServerError("Database error finding user").WithInternalError(err)
}
var emailData *provider.Email
var emails []string
for _, e := range userData.Emails {
emails = append(emails, e.Email)
if user.Email == e.Email {
emailData = &e
break
}
}
if emailData == nil {
return nil, badRequestError("Invited email does not match emails from external provider").WithInternalMessage("invited=%s external=%s", user.Email, strings.Join(emails, ", "))
}
if err := user.UpdateAppMetaData(tx, map[string]interface{}{
"provider": providerType,
}); err != nil {
return nil, internalServerError("Database error updating user").WithInternalError(err)
}
updates := make(map[string]interface{})
for k, v := range userData.Metadata {
if v != "" {
updates[k] = v
}
}
if err := user.UpdateUserMetaData(tx, updates); err != nil {
return nil, internalServerError("Database error updating user").WithInternalError(err)
}
if err := models.NewAuditLogEntry(tx, instanceID, user, models.InviteAcceptedAction, nil); err != nil {
return nil, err
}
if err := triggerEventHooks(ctx, tx, SignupEvent, user, instanceID, config); err != nil {
return nil, err
}
// confirm because they were able to respond to invite email
if err := user.Confirm(tx); err != nil {
return nil, err
}
return user, nil
}
func (a *API) loadExternalState(ctx context.Context, state string) (context.Context, error) {
claims := ExternalProviderClaims{}
p := jwt.Parser{ValidMethods: []string{jwt.SigningMethodHS256.Name}}
_, err := p.ParseWithClaims(state, &claims, func(token *jwt.Token) (interface{}, error) {
return []byte(a.config.OperatorToken), nil
})
if err != nil || claims.Provider == "" {
return nil, badRequestError("OAuth state is invalid: %v", err)
}
if claims.InviteToken != "" {
ctx = withInviteToken(ctx, claims.InviteToken)
}
if claims.Referrer != "" {
ctx = withExternalReferrer(ctx, claims.Referrer)
}
ctx = withExternalProviderType(ctx, claims.Provider)
return withSignature(ctx, state), nil
}
// Provider returns a Provider interface for the given name.
func (a *API) Provider(ctx context.Context, name string) (provider.Provider, error) {
config := a.getConfig(ctx)
name = strings.ToLower(name)
switch name {
case "bitbucket":
return provider.NewBitbucketProvider(config.External.Bitbucket)
case "github":
return provider.NewGithubProvider(config.External.Github)
case "gitlab":
return provider.NewGitlabProvider(config.External.Gitlab)
case "google":
return provider.NewGoogleProvider(config.External.Google)
case "facebook":
return provider.NewFacebookProvider(config.External.Facebook)
case "saml":
return provider.NewSamlProvider(config.External.Saml, a.db, getInstanceID(ctx))
default:
return nil, fmt.Errorf("Provider %s could not be found", name)
}
}
func (a *API) redirectErrors(handler apiHandler, w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
log := getLogEntry(r)
errorID := getRequestID(ctx)
err := handler(w, r)
if err != nil {
q := getErrorQueryString(err, errorID, log)
http.Redirect(w, r, a.getExternalRedirectURL(r)+"#"+q.Encode(), http.StatusFound)
}
}
func getErrorQueryString(err error, errorID string, log logrus.FieldLogger) *url.Values {
q := url.Values{}
switch e := err.(type) {
case *HTTPError:
if str, ok := oauthErrorMap[e.Code]; ok {
q.Set("error", str)
} else {
q.Set("error", "server_error")
}
if e.Code >= http.StatusInternalServerError {
e.ErrorID = errorID
// this will get us the stack trace too
log.WithError(e.Cause()).Error(e.Error())
} else {
log.WithError(e.Cause()).Info(e.Error())
}
q.Set("error_description", e.Message)
case *OAuthError:
q.Set("error", e.Err)
q.Set("error_description", e.Description)
log.WithError(e.Cause()).Info(e.Error())
case ErrorCause:
return getErrorQueryString(e.Cause(), errorID, log)
default:
q.Set("error", "server_error")
q.Set("error_description", err.Error())
}
return &q
}
func (a *API) getExternalRedirectURL(r *http.Request) string {
ctx := r.Context()
config := a.getConfig(ctx)
if config.External.RedirectURL != "" {
return config.External.RedirectURL
}
if er := getExternalReferrer(ctx); er != "" {
return er
}
return config.SiteURL
}