added jwt validation

Signed-off-by: Abel Andrés <[email protected]>

.env.dist

@@ -142,3 +142,28 @@ CACHE_ALLOWED_STATUSES=200,301,302
 # though it is recommended to specify them explicitly.
 # Default: HEAD,GET
 CACHE_ALLOWED_METHODS=HEAD,GET
+
+# --- JWT
+# A list of space-separated paths.
+# JWT_EXCLUDED_PATHS=
+
+# A list of space-separated scopes to be allowed.
+# JWT_ALLOWED_SCOPES=
+
+# The JSON Web Key Set (JWKS) URL where it is stored the the public keys used to verify the JSON Web Token (JWT).
+# - For global configuration:
+# JWT_JWKS_URL=
+# - For domain configuration:
+# JWT_JWKS_URL_<domain_name_specified_in_config.yml>=
+# *e.g: JWT_JWKS_URL_example_com=http://testJwksUrl.com
+# Global Configuration - The value of the JwksUrl field is taken by following this preference order:
+#  - JWT_JWKS_URL enviroment variable
+#  - global jwks_url variable in config.yaml
+# Domain Configuration - The value of the JwksUrl field is taken by following this preference order:
+#  - JWT_JWKS_URL_<domain_name_specified_in_config.yml> enviroment variable
+#  - domain jwks_url variable specified in config.yaml
+#  - global jwks_url variable specified in config.yaml
+#  - JWT_JWKS_URL enviroment variable
+
+# Time in minutes that takes for JWKS to refresh automatically
+# JWT_REFRESH_INTERVAL=

config.yml.dist

@@ -306,6 +306,19 @@ tracing:
   # Default: 1.0
   sampling_ratio: 1.0
 
+# --- JWT  (careful, setting JWT config here affects all domains)
+# jwt:
+#   # A list of space-separated paths.
+#   excluded_paths:
+#     - /
+#   # A list of space-separated scopes to be allowed.
+#   allowed_scopes:
+#     - scope1, scope2
+#   # The JSON Web Key Set (JWKS) URL where it is stored the the public keys used to verify the JSON Web Token (JWT).
+#   jwks_url: ~
+#   # Time in minutes that takes for JWKS to refresh automatically
+#   jwks_refresh_interval: 15
+
 ### PER DOMAIN CONFIGURATION OVERRIDE
 ################################################################################
 domains:

config/config.go

@@ -10,6 +10,7 @@ package config
 // Repo: https://github.com/fabiocicerchia/go-proxy-cache
 
 import (
+	"context"
 	"crypto/tls"
 	"fmt"
 	"os"
@@ -98,6 +99,11 @@ func copyGlobalOverDomainConfig(file string) {
 			domain := Config
 			domain.CopyOverWith(v, &file)
 			domain.Domains = Domains{}
+			domainName := k
+			_, isJWKSUrl := os.LookupEnv("JWT_JWKS_URL_" + domainName)
+			if isJWKSUrl {
+				domain.Jwt.JwksUrl = os.Getenv("JWT_JWKS_URL_" + domainName)
+			}
 			domains[k] = domain
 		}
 
@@ -137,6 +143,7 @@ func (c *Configuration) CopyOverWith(overrides Configuration, file *string) {
 	c.copyOverWithCache(overrides.Cache)
 	c.copyOverWithTracing(overrides.Tracing)
 	c.copyOverWithLog(overrides.Log)
+	c.copyOverWithJwt(overrides.Jwt)
 }
 
 // --- SERVER.
@@ -217,6 +224,16 @@ func (c *Configuration) copyOverWithLog(overrides Log) {
 	c.Log.SyslogEndpoint = utils.Coalesce(overrides.SyslogEndpoint, c.Log.SyslogEndpoint).(string)
 }
 
+// --- JWT.
+func (c *Configuration) copyOverWithJwt(overrides Jwt) {
+	c.Jwt.ExcludedPaths = utils.Coalesce(overrides.ExcludedPaths, c.Jwt.ExcludedPaths).([]string)
+	c.Jwt.AllowedScopes = utils.Coalesce(overrides.AllowedScopes, c.Jwt.AllowedScopes).([]string)
+	c.Jwt.JwksUrl = utils.Coalesce(overrides.JwksUrl, c.Jwt.JwksUrl).(string)
+	c.Jwt.JwksRefreshInterval = utils.Coalesce(overrides.JwksRefreshInterval, c.Jwt.JwksRefreshInterval).(int)
+	c.Jwt.Context = context.Background()
+	c.Jwt.Logger = log.New()
+}
+
 // Print - Shows the current configuration.
 func Print() {
 	obfuscatedConfig := Configuration{}

config/model.go

@@ -10,12 +10,14 @@ package config
 // Repo: https://github.com/fabiocicerchia/go-proxy-cache
 
 import (
+	"context"
 	"crypto/tls"
 	"net/http"
 	"time"
 
 	"github.com/fabiocicerchia/go-proxy-cache/utils"
 	circuitbreaker "github.com/fabiocicerchia/go-proxy-cache/utils/circuit-breaker"
+	"github.com/sirupsen/logrus"
 )
 
 // DefaultTimeoutRead - Default value used for http.Server.ReadTimeout
@@ -57,6 +59,7 @@ type Configuration struct {
 	Log            Log                           `yaml:"log"`
 	Tracing        Tracing                       `yaml:"tracing"`
 	domainsCache   map[string]Configuration
+	Jwt		   	   Jwt					 		 `yaml:"jwt"`
 }
 
 // Domains - Overrides per domain.
@@ -162,6 +165,22 @@ type DomainSet struct {
 	Scheme string
 }
 
+// Jwt - Defines the config for the jwt validation.
+type Jwt struct {
+	ExcludedPaths       []string `yaml:"excluded_paths" envconfig:"JWT_EXCLUDED_PATHS" split_words:"true"`
+	AllowedScopes       []string `yaml:"allowed_scopes" envconfig:"JWT_ALLOWED_SCOPES" split_words:"true"`
+	JwksUrl             string   `yaml:"jwks_url" envconfig:"JWT_JWKS_URL"`
+	JwksRefreshInterval int      `yaml:"jwks_refresh_interval" envconfig:"JWT_REFRESH_INTERVAL" default:"15"`
+	Context             context.Context
+	Logger              *logrus.Logger
+}
+
+// Jwt - Defines the jwt validation error.
+type JwtError struct {
+	ErrorCode        string `json:"errorCode"`
+	ErrorDescription string `json:"errorDescription"`
+}
+
 // Config - Holds the server configuration.
 var Config Configuration = Configuration{
 	Server: Server{

docs/CONFIGURATION.md

@@ -41,6 +41,11 @@
 - `TLS_KEY_FILE`
 - `TRACING_ENABLED`
 - `TRACING_JAEGER_ENDPOINT`
+- `JWT_EXCLUDED_PATHS`
+- `JWT_ALLOWED_SCOPES`
+- `JWT_JWKS_URL`
+- `JWT_JWKS_URL_<domain_name_specified_in_config.yml>`
+- `JWT_REFRESH_INTERVAL`
 
 ## YAML
 
@@ -353,6 +358,19 @@ tracing:
   # Default: 1.0
   sampling_ratio: 1.0
 
+# --- JWT
+# jwt:
+#   # A list of space-separated paths.
+#   excluded_paths:
+#     - /
+#   # A list of space-separated scopes to be allowed.
+#   allowed_scopes:
+#     - scope1, scope2
+#   # The JSON Web Key Set (JWKS) URL where it is stored the the public keys used to verify the JSON Web Token (JWT).
+#   jwks_url: ~
+#   # Time in minutes that takes for JWKS to refresh automatically
+#   jwks_refresh_interval: 15
+
 ### PER DOMAIN CONFIGURATION OVERRIDE
 ################################################################################
 domains:

go.mod

@@ -11,22 +11,24 @@ require (
 	github.com/gorilla/websocket v1.5.0
 	github.com/jinzhu/copier v0.4.0
 	github.com/kelseyhightower/envconfig v1.4.0
+	github.com/lestrrat-go/backoff/v2 v2.0.8
+	github.com/lestrrat-go/jwx v1.2.29
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.17.0
 	github.com/rs/dnscache v0.0.0-20230804202142-fc85eb664529
 	github.com/rs/xid v1.5.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/sony/gobreaker v0.5.0
-	github.com/stretchr/testify v1.8.4
+	github.com/stretchr/testify v1.9.0
 	github.com/ugorji/go/codec v1.2.11
 	github.com/yhat/wsutil v0.0.0-20170731153501-1d66fa95c997
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.45.0
 	go.opentelemetry.io/otel v1.21.0
 	go.opentelemetry.io/otel/exporters/jaeger v1.17.0
 	go.opentelemetry.io/otel/sdk v1.21.0
 	go.opentelemetry.io/otel/trace v1.21.0
-	golang.org/x/crypto v0.14.0
-	golang.org/x/net v0.17.0
+	golang.org/x/crypto v0.21.0
+	golang.org/x/net v0.21.0
 	gopkg.in/yaml.v2 v2.4.0
 )
 
@@ -35,24 +37,30 @@ require (
 	github.com/certifi/gocertifi v0.0.0-20210507211836-431795d63e8d // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/felixge/httpsnoop v1.0.3 // indirect
 	github.com/getsentry/raven-go v0.2.0 // indirect
 	github.com/go-logr/logr v1.3.0 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/kr/text v0.2.0 // indirect
+	github.com/lestrrat-go/blackmagic v1.0.2 // indirect
+	github.com/lestrrat-go/httpcc v1.0.1 // indirect
+	github.com/lestrrat-go/iter v1.0.2 // indirect
+	github.com/lestrrat-go/option v1.0.1 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.4.1-0.20230718164431-9a2bf3000d16 // indirect
 	github.com/prometheus/common v0.44.0 // indirect
 	github.com/prometheus/procfs v0.11.1 // indirect
 	go.opentelemetry.io/otel/metric v1.21.0 // indirect
 	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/sys v0.14.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )