mirror of
https://github.com/openziti/ziti.git
synced 2026-09-23 11:03:46 +00:00
Paul Lorenz
551 lines
14 KiB
Go
551 lines
14 KiB
Go
/*
|
|
Copyright NetFoundry Inc.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
https://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
package model
|
|
|
|
import (
|
|
"crypto/x509"
|
|
"encoding/base64"
|
|
"fmt"
|
|
"github.com/golang-jwt/jwt"
|
|
"github.com/michaelquigley/pfxlog"
|
|
"github.com/openziti/edge/controller/apierror"
|
|
"github.com/openziti/edge/controller/persistence"
|
|
nfPem "github.com/openziti/foundation/v2/pem"
|
|
"github.com/openziti/foundation/v2/stringz"
|
|
"github.com/openziti/jwks"
|
|
"github.com/openziti/storage/boltz"
|
|
cmap "github.com/orcaman/concurrent-map/v2"
|
|
"github.com/pkg/errors"
|
|
"go.etcd.io/bbolt"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
var _ AuthProcessor = &AuthModuleExtJwt{}
|
|
|
|
const (
|
|
AuthMethodExtJwt = "ext-jwt"
|
|
ExtJwtInternalClaim = "-internal-ext-jwt"
|
|
)
|
|
|
|
type AuthModuleExtJwt struct {
|
|
env Env
|
|
method string
|
|
signers cmap.ConcurrentMap[*signerRecord]
|
|
}
|
|
|
|
func NewAuthModuleExtJwt(env Env) *AuthModuleExtJwt {
|
|
ret := &AuthModuleExtJwt{
|
|
env: env,
|
|
method: AuthMethodExtJwt,
|
|
signers: cmap.New[*signerRecord](),
|
|
}
|
|
|
|
env.GetStores().ExternalJwtSigner.AddListener(boltz.EventCreate, ret.onExternalSignerCreate)
|
|
env.GetStores().ExternalJwtSigner.AddListener(boltz.EventUpdate, ret.onExternalSignerUpdate)
|
|
env.GetStores().ExternalJwtSigner.AddListener(boltz.EventDelete, ret.onExternalSignerDelete)
|
|
|
|
ret.loadExistingSigners()
|
|
|
|
return ret
|
|
}
|
|
|
|
type signerRecord struct {
|
|
sync.Mutex
|
|
jwksLastRequest time.Time
|
|
|
|
kidToCertificate map[string]*x509.Certificate
|
|
jwksResponse *jwks.Response
|
|
externalJwtSigner *persistence.ExternalJwtSigner
|
|
|
|
jwksResolver jwks.Resolver
|
|
}
|
|
|
|
func (r *signerRecord) Resolve(force bool) error {
|
|
r.Mutex.Lock()
|
|
defer r.Mutex.Unlock()
|
|
|
|
if r.externalJwtSigner.CertPem != nil {
|
|
if len(r.kidToCertificate) != 0 && !force {
|
|
return nil
|
|
}
|
|
|
|
certs := nfPem.PemStringToCertificates(*r.externalJwtSigner.CertPem)
|
|
|
|
if len(certs) == 0 {
|
|
return errors.New("could not add signer, PEM did not parse to any certificates")
|
|
}
|
|
|
|
// first cert only
|
|
r.kidToCertificate = map[string]*x509.Certificate{
|
|
*r.externalJwtSigner.Kid: certs[0],
|
|
}
|
|
|
|
return nil
|
|
|
|
} else if r.externalJwtSigner.JwksEndpoint != nil {
|
|
if len(r.kidToCertificate) != 0 && !force {
|
|
return nil
|
|
}
|
|
|
|
if !r.jwksLastRequest.IsZero() && time.Since(r.jwksLastRequest) < time.Second*5 {
|
|
return nil
|
|
}
|
|
|
|
r.jwksLastRequest = time.Now()
|
|
|
|
jwksResponse, _, err := r.jwksResolver.Get(*r.externalJwtSigner.JwksEndpoint)
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("could not resolve jwks endpoint: %v", err)
|
|
}
|
|
|
|
for _, key := range jwksResponse.Keys {
|
|
if len(key.X509Chain) == 0 {
|
|
return errors.New("could not parse JWKS keys, x509 chain was empty")
|
|
}
|
|
|
|
x509Der, err := base64.StdEncoding.DecodeString(key.X509Chain[0])
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("could not parse JWKS keys: %v", err)
|
|
}
|
|
|
|
certs, err := x509.ParseCertificates(x509Der)
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("could not parse JWKS DER as x509: %v", err)
|
|
}
|
|
|
|
if len(certs) == 0 {
|
|
return fmt.Errorf("no ceritficates parsed")
|
|
}
|
|
|
|
r.kidToCertificate[key.KeyId] = certs[0]
|
|
}
|
|
|
|
r.jwksResponse = jwksResponse
|
|
|
|
return nil
|
|
}
|
|
|
|
return errors.New("instructed to add external jwt signer that does not have a certificate PEM or JWKS endpoint")
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) CanHandle(method string) bool {
|
|
return method == a.method
|
|
}
|
|
func (a *AuthModuleExtJwt) pubKeyLookup(token *jwt.Token) (interface{}, error) {
|
|
logger := pfxlog.Logger().WithField("method", a.method)
|
|
|
|
kidVal, ok := token.Header["kid"]
|
|
|
|
if !ok {
|
|
logger.Error("missing kid")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
kid, ok := kidVal.(string)
|
|
|
|
if !ok {
|
|
logger.Error("kid is not a string")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
logger = logger.WithField("kid", kid)
|
|
|
|
claims := token.Claims.(jwt.MapClaims)
|
|
if claims == nil {
|
|
logger.Error("unknown signer, attempting to look up by claims, but claims were nil")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
issVal, ok := claims["iss"]
|
|
|
|
if !ok {
|
|
logger.Error("unknown signer, attempting to look up by issue, but issuer is missing")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
issuer := issVal.(string)
|
|
|
|
if issuer == "" {
|
|
logger.Error("unknown signer, attempting to look up by issue, but issuer is empty or not a string")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
logger = logger.WithField("issuer", issuer)
|
|
|
|
signerRecord, ok := a.signers.Get(issuer)
|
|
|
|
if !ok {
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
logger = logger.WithField("extJwtSignerId", signerRecord.externalJwtSigner.Id).WithField("extJwtSignerName", signerRecord.externalJwtSigner.Name)
|
|
|
|
if !signerRecord.externalJwtSigner.Enabled {
|
|
logger.Error("external jwt is disabled")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
cert, ok := signerRecord.kidToCertificate[kid]
|
|
|
|
if !ok {
|
|
if err := signerRecord.Resolve(false); err != nil {
|
|
logger.WithError(err).Error("error attempting to resolve extJwtSigner certificate used for signing")
|
|
}
|
|
|
|
cert, ok = signerRecord.kidToCertificate[kid]
|
|
|
|
if !ok {
|
|
return nil, fmt.Errorf("kid [%s] not found for issuer [%s]", kid, issuer)
|
|
}
|
|
}
|
|
|
|
claims[ExtJwtInternalClaim] = signerRecord.externalJwtSigner
|
|
|
|
return cert.PublicKey, nil
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) Process(context AuthContext) (AuthResult, error) {
|
|
return a.process(context, true)
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) ProcessSecondary(context AuthContext) (AuthResult, error) {
|
|
return a.process(context, false)
|
|
}
|
|
|
|
type AuthResultJwt struct {
|
|
AuthResultBase
|
|
externalJwtSignerId string
|
|
externalJwtSigner *persistence.ExternalJwtSigner
|
|
}
|
|
|
|
func (a *AuthResultJwt) IsSuccessful() bool {
|
|
return a.externalJwtSignerId != "" && a.AuthResultBase.identityId != ""
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) process(context AuthContext, isPrimary bool) (AuthResult, error) {
|
|
logger := pfxlog.Logger().WithField("authMethod", AuthMethodExtJwt)
|
|
|
|
headers := map[string]interface{}{}
|
|
|
|
for key, value := range context.GetHeaders() {
|
|
headers[strings.ToLower(key)] = value
|
|
}
|
|
|
|
var authHeaders []string
|
|
|
|
if authHeaderVal, ok := headers["authorization"]; ok {
|
|
authHeaders = authHeaderVal.([]string)
|
|
}
|
|
|
|
if len(authHeaders) != 1 {
|
|
logger.Error("no authorization header found")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
authHeader := authHeaders[0]
|
|
|
|
if !strings.HasPrefix(authHeader, "Bearer ") {
|
|
logger.Error("authorization header missing Bearer prefix")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
jwtStr := strings.Replace(authHeader, "Bearer ", "", 1)
|
|
|
|
//pubKeyLookup also handles extJwtSigner.enabled checking
|
|
jwtToken, err := jwt.Parse(jwtStr, a.pubKeyLookup)
|
|
|
|
if err == nil && jwtToken.Valid {
|
|
mapClaims := jwtToken.Claims.(jwt.MapClaims)
|
|
extJwt := mapClaims[ExtJwtInternalClaim].(*persistence.ExternalJwtSigner)
|
|
|
|
if extJwt == nil {
|
|
logger.Error("no external jwt signer found for internal claims")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
logger = logger.WithField("externalJwtSignerId", extJwt.Id)
|
|
|
|
issuer := ""
|
|
if issuerVal, ok := mapClaims["iss"]; ok {
|
|
issuer, ok = issuerVal.(string)
|
|
if !ok {
|
|
logger.Error("issuer in claims was not a string")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
}
|
|
|
|
logger = logger.WithField("claimsIssuer", issuer)
|
|
|
|
if extJwt.Issuer != nil && *extJwt.Issuer != issuer {
|
|
logger.WithField("expectedIssuer", *extJwt.Issuer).Error("invalid issuer")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
if extJwt.Audience != nil {
|
|
audValues := mapClaims["aud"]
|
|
|
|
if audValues == nil {
|
|
logger.WithField("audience", audValues).Error("audience is missing")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
audSlice, ok := audValues.([]string)
|
|
|
|
if !ok {
|
|
audString, ok := audValues.(string)
|
|
|
|
if !ok {
|
|
logger.WithField("audience", audValues).Error("audience is not a string or array of strings")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
audSlice = []string{audString}
|
|
}
|
|
|
|
found := false
|
|
for _, validAud := range audSlice {
|
|
if validAud == *extJwt.Audience {
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
logger.WithField("expectedAudience", *extJwt.Audience).WithField("claimsAudiences", audSlice).Error("invalid audience")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
}
|
|
|
|
idClaimProperty := "sub"
|
|
if extJwt.ClaimsProperty != nil {
|
|
idClaimProperty = *extJwt.ClaimsProperty
|
|
}
|
|
|
|
logger = logger.WithField("idClaimProperty", idClaimProperty)
|
|
|
|
identityIdInterface, ok := mapClaims[idClaimProperty]
|
|
|
|
if !ok {
|
|
logger.Error("claims property on external jwt signer not found in claims")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
claimsId, ok := identityIdInterface.(string)
|
|
|
|
if !ok || claimsId == "" {
|
|
logger.Error("expected claims id was not a string or was empty")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
var authPolicy *AuthPolicy
|
|
|
|
var identity *Identity
|
|
if extJwt.UseExternalId {
|
|
authPolicy, identity, err = getAuthPolicyByExternalId(a.env, AuthMethodExtJwt, "", claimsId)
|
|
} else {
|
|
authPolicy, identity, err = getAuthPolicyByIdentityId(a.env, AuthMethodExtJwt, "", claimsId)
|
|
}
|
|
|
|
if err != nil {
|
|
logger.WithError(err).Error("encountered unhandled error during authentication")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
if authPolicy == nil {
|
|
logger.WithError(err).Error("encountered unhandled nil auth policy during authentication")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
if identity == nil {
|
|
logger.WithError(err).Error("encountered unhandled nil identity during authentication")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
externalJwtSignerId := ""
|
|
if identity.Disabled {
|
|
logger.
|
|
WithField("disabledAt", identity.DisabledAt).
|
|
WithField("disabledUntil", identity.DisabledUntil).
|
|
Error("authentication failed, identity is disabled")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
if !authPolicy.Primary.ExtJwt.Allowed {
|
|
logger.Error("external jwt authentication on auth policy is disabled")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
if isPrimary {
|
|
if len(authPolicy.Primary.ExtJwt.AllowedExtJwtSigners) > 0 {
|
|
found := false
|
|
for _, allowedId := range authPolicy.Primary.ExtJwt.AllowedExtJwtSigners {
|
|
if allowedId == extJwt.Id {
|
|
externalJwtSignerId = allowedId
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
|
|
if !found {
|
|
logger.
|
|
WithField("allowedSigners", authPolicy.Primary.ExtJwt.AllowedExtJwtSigners).
|
|
Error("auth policy does not allow specified signer")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
} else {
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
} else if authPolicy.Secondary.RequiredExtJwtSigner != nil {
|
|
if extJwt.Id != *authPolicy.Secondary.RequiredExtJwtSigner {
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
externalJwtSignerId = extJwt.Id
|
|
}
|
|
|
|
result := &AuthResultJwt{
|
|
AuthResultBase: AuthResultBase{
|
|
authPolicyId: authPolicy.Id,
|
|
authPolicy: authPolicy,
|
|
identity: identity,
|
|
identityId: identity.Id,
|
|
externalId: stringz.OrEmpty(identity.ExternalId),
|
|
env: a.env,
|
|
},
|
|
externalJwtSignerId: externalJwtSignerId,
|
|
externalJwtSigner: extJwt,
|
|
}
|
|
|
|
return result, nil
|
|
}
|
|
|
|
logger.Error("authorization failed, jwt did not verify")
|
|
return nil, apierror.NewInvalidAuth()
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) onExternalSignerCreate(args ...interface{}) {
|
|
signer, ok := args[0].(*persistence.ExternalJwtSigner)
|
|
|
|
if !ok {
|
|
pfxlog.Logger().Errorf("error on external signature create for authentication module %T: expected %T got %T", a, signer, args[0])
|
|
return
|
|
}
|
|
|
|
a.addSigner(signer)
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) onExternalSignerUpdate(args ...interface{}) {
|
|
signer, ok := args[0].(*persistence.ExternalJwtSigner)
|
|
|
|
if !ok {
|
|
pfxlog.Logger().Errorf("error on external signature update for authentication module %T: expected %T got %T", a, signer, args[0])
|
|
return
|
|
}
|
|
|
|
//read on update because patches can pass partial data
|
|
err := a.env.GetDbProvider().GetDb().View(func(tx *bbolt.Tx) error {
|
|
var err error
|
|
signer, err = a.env.GetStores().ExternalJwtSigner.LoadOneById(tx, signer.Id)
|
|
|
|
return err
|
|
})
|
|
|
|
if err != nil {
|
|
pfxlog.Logger().Errorf("error on external signature update for authentication module %T: could not read entity: %v", a, err)
|
|
}
|
|
|
|
a.addSigner(signer)
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) addSigner(signer *persistence.ExternalJwtSigner) {
|
|
logger := pfxlog.Logger().WithFields(map[string]interface{}{
|
|
"id": signer.Id,
|
|
"name": signer.Name,
|
|
"hasCertPem": signer.CertPem != nil,
|
|
"jwksEndpoint": signer.JwksEndpoint,
|
|
})
|
|
|
|
if signer.Issuer == nil {
|
|
logger.Error("could not add signer, issuer is nil")
|
|
return
|
|
}
|
|
|
|
signerRec := &signerRecord{
|
|
externalJwtSigner: signer,
|
|
jwksResolver: &jwks.HttpResolver{},
|
|
kidToCertificate: map[string]*x509.Certificate{},
|
|
}
|
|
|
|
if err := signerRec.Resolve(false); err != nil {
|
|
logger.WithError(err).Error("could not resolve signer cert/jwks")
|
|
}
|
|
|
|
a.signers.Set(*signer.Issuer, signerRec)
|
|
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) onExternalSignerDelete(args ...interface{}) {
|
|
signer, ok := args[0].(*persistence.ExternalJwtSigner)
|
|
|
|
if !ok {
|
|
pfxlog.Logger().Errorf("error on external signature update for authentication module %T: expected %T got %T", a, signer, args[0])
|
|
return
|
|
}
|
|
|
|
logger := pfxlog.Logger().WithFields(map[string]interface{}{
|
|
"id": signer.Id,
|
|
"name": signer.Name,
|
|
"hasCertPem": signer.CertPem != nil,
|
|
"jwksEndpoint": signer.JwksEndpoint,
|
|
})
|
|
|
|
if signer.Issuer == nil {
|
|
logger.Error("could not add signer, issuer is nil")
|
|
return
|
|
}
|
|
|
|
a.signers.Remove(*signer.Issuer)
|
|
}
|
|
|
|
func (a *AuthModuleExtJwt) loadExistingSigners() {
|
|
err := a.env.GetDbProvider().GetDb().View(func(tx *bbolt.Tx) error {
|
|
ids, _, err := a.env.GetStores().ExternalJwtSigner.QueryIds(tx, "")
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, id := range ids {
|
|
signer, err := a.env.GetStores().ExternalJwtSigner.LoadOneById(tx, id)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
a.addSigner(signer)
|
|
}
|
|
|
|
return nil
|
|
})
|
|
|
|
if err != nil {
|
|
pfxlog.Logger().Errorf("error loading external jwt signerByIssuer: %v", err)
|
|
}
|
|
}
|