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jwks_test.go
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jwks_test.go
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package main
import (
"crypto/rand"
"crypto/rsa"
"encoding/base64"
"encoding/json"
"testing"
"time"
"github.com/golang-jwt/jwt/v5"
)
func TestGetKeyForTokenMaker(t *testing.T) {
// Create a JWKS for verifying tokens
privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
panic(err)
}
pubKey := privateKey.Public().(*rsa.PublicKey)
jwk := JWK{Kty: "RSA", Kid: "testKey", Alg: "RS256", Use: "sig"}
jwk.N = base64.RawURLEncoding.EncodeToString(pubKey.N.Bytes())
jwk.E = "AQAB"
jwks := JWKS{Keys: []JWK{jwk}}
jwksBytes, _ := json.Marshal(jwks)
getKeyFunc := getKeyFromJwks(jwksBytes)
// Test token referencing known key
tokenClaims := jwt.MapClaims{"for": "testing"}
token := jwt.NewWithClaims(jwt.SigningMethodRS256, tokenClaims)
token.Header["kid"] = "testKey"
key, err := getKeyFunc(token)
if err != nil {
t.Error(err)
}
if key.(*rsa.PublicKey).N.Cmp(pubKey.N) != 0 {
t.Error("public key does not match")
}
// Test token referencing unknown key
token.Header["kid"] = "unknownKey"
key, err = getKeyFunc(token)
if err == nil {
t.Error("Should fail when passed unknown key")
}
// Test token fails with any other signing key than RSA
tokenHmac := jwt.NewWithClaims(jwt.SigningMethodHS256, tokenClaims)
key, err = getKeyFunc(tokenHmac)
if err == nil {
t.Error("Should fail any signing algorithm other than RSA")
}
}
func TestValidateTokenCameFromGitHub(t *testing.T) {
// Create a JWKS for verifying tokens
privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
panic(err)
}
pubKey := privateKey.Public().(*rsa.PublicKey)
jwk := JWK{Kty: "RSA", Kid: "testKey", Alg: "RS256", Use: "sig"}
jwk.N = base64.RawURLEncoding.EncodeToString(pubKey.N.Bytes())
jwk.E = "AQAB"
jwks := JWKS{Keys: []JWK{jwk}}
jwksBytes, _ := json.Marshal(jwks)
gatewayContext := &AppContext{jwksCache: jwksBytes, jwksLastUpdate: time.Now()}
// Test token signed in the expected way
tokenClaims := jwt.MapClaims{"for": "testing"}
token := jwt.NewWithClaims(jwt.SigningMethodRS256, tokenClaims)
token.Header["kid"] = "testKey"
signedToken, err := token.SignedString(privateKey)
if err != nil {
panic(err)
}
claims, err := validateTokenCameFromGitHub(signedToken, gatewayContext)
if err != nil {
t.Error(err)
}
if claims["for"] != "testing" {
t.Error("Unable to find claims")
}
// Test signing with a unknown key is not allowed
otherPrivateKey, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
panic(err)
}
signedToken, err = token.SignedString(otherPrivateKey)
if err != nil {
panic(err)
}
claims, err = validateTokenCameFromGitHub(signedToken, gatewayContext)
if err == nil {
t.Error("Should not validate token signed with other key")
}
// Test unsigned token is not allowed
unsigendToken := jwt.NewWithClaims(jwt.SigningMethodNone, tokenClaims)
unsigendToken.Header["kid"] = "testKey"
noneToken, err := token.SignedString("none signing method allowed")
claims, err = validateTokenCameFromGitHub(noneToken, gatewayContext)
if err == nil {
t.Error("Should not validate unsigned token")
}
}
func TestStringifyCompleteMapClaims(t *testing.T) {
claims := jwt.MapClaims{
"actor": "helaili",
"actor_id": 2787414,
"aud": "api://ActionsOIDCGateway",
"base_ref": "refs/heads/main",
"environment": "production",
"event_name": "workflow_dispatch",
"head_ref": "refs/heads/main",
"iss": "https://token.actions.githubusercontent.com",
"job_workflow_ref": "helaili/github-oidc-auth-app/.github/workflows/manual-test.yml@refs/heads/main",
"job_workflow_sha": "44216e5ae99f3653290b60b7f995bfe1c0f3aba0",
"ref": "refs/heads/main",
"ref_type": "branch",
"repository": "helaili/github-oidc-auth-app",
"repository_id": 630836305,
"repository_owner": "helaili",
"repository_owner_id": 2787414,
"repository_visibility": "public",
"run_attempt": 1,
"run_id": 4779904167,
"run_number": 12,
"runner_environment": "github-hosted",
"sub": "repo:helaili/github-oidc-auth-app:ref:refs/heads/main",
"workflow": "Manual Test Workflow",
"workflow_ref": "helaili/github-oidc-auth-app/.github/workflows/manual-test.yml@refs/heads/main",
"workflow_sha": "44216e5ae99f3653290b60b7f995bfe1c0f3aba0",
}
strMapClaims := stringifyMapClaims(claims)
if strMapClaims != "actor:helaili,actor_id:2787414,aud:api://ActionsOIDCGateway,base_ref:refs/heads/main,environment:production,event_name:workflow_dispatch,head_ref:refs/heads/main,iss:https://token.actions.githubusercontent.com,job_workflow_ref:helaili/github-oidc-auth-app/.github/workflows/manual-test.yml@refs/heads/main,job_workflow_sha:44216e5ae99f3653290b60b7f995bfe1c0f3aba0,ref:refs/heads/main,ref_type:branch,repository:helaili/github-oidc-auth-app,repository_id:630836305,repository_owner:helaili,repository_owner_id:2787414,repository_visibility:public,run_attempt:1,run_id:4779904167,run_number:12,runner_environment:github-hosted,sub:repo:helaili/github-oidc-auth-app:ref:refs/heads/main,workflow:Manual Test Workflow,workflow_ref:helaili/github-oidc-auth-app/.github/workflows/manual-test.yml@refs/heads/main,workflow_sha:44216e5ae99f3653290b60b7f995bfe1c0f3aba0" {
t.Error("Expected stringified map claims to be actor:helaili,actor_id:2787414,aud:api://ActionsOIDCGateway,base_ref:refs/heads/main,environment:production,event_name:workflow_dispatch,head_ref:refs/heads/main,iss:https://token.actions.githubusercontent.com,job_workflow_ref:helaili/github-oidc-auth-app/.github/workflows/manual-test.yml@refs/heads/main,job_workflow_sha:44216e5ae99f3653290b60b7f995bfe1c0f3aba0,ref:refs/heads/main,ref_type:branch,repository:helaili/github-oidc-auth-app,repository_id:630836305,repository_owner:helaili,repository_owner_id:2787414,repository_visibility:public,run_attempt:1,run_id:4779904167,run_number:12,runner_environment:github-hosted,sub:repo:helaili/github-oidc-auth-app:ref:refs/heads/main,workflow:Manual Test Workflow,workflow_ref:helaili/github-oidc-auth-app/.github/workflows/manual-test.yml@refs/heads/main,workflow_sha:44216e5ae99f3653290b60b7f995bfe1c0f3aba0, but got", strMapClaims)
}
}
func TestStringifyPartialMapClaims(t *testing.T) {
claims := jwt.MapClaims{
"actor": "helaili",
"event_name": "workflow_dispatch",
"ref": "refs/heads/main",
"repository": "helaili/github-oidc-auth-app",
"repository_owner": "helaili",
"repository_visibility": "public",
"workflow": "Manual Test Workflow",
}
strMapClaims := stringifyMapClaims(claims)
if strMapClaims != "actor:helaili,actor_id:XXXNOTSETXXX,aud:XXXNOTSETXXX,base_ref:XXXNOTSETXXX,environment:XXXNOTSETXXX,event_name:workflow_dispatch,head_ref:XXXNOTSETXXX,iss:XXXNOTSETXXX,job_workflow_ref:XXXNOTSETXXX,job_workflow_sha:XXXNOTSETXXX,ref:refs/heads/main,ref_type:XXXNOTSETXXX,repository:helaili/github-oidc-auth-app,repository_id:XXXNOTSETXXX,repository_owner:helaili,repository_owner_id:XXXNOTSETXXX,repository_visibility:public,run_attempt:XXXNOTSETXXX,run_id:XXXNOTSETXXX,run_number:XXXNOTSETXXX,runner_environment:XXXNOTSETXXX,sub:XXXNOTSETXXX,workflow:Manual Test Workflow,workflow_ref:XXXNOTSETXXX,workflow_sha:XXXNOTSETXXX" {
t.Error("Expected stringified map claims to be actor:helaili,actor_id:XXXNOTSETXXX,aud:XXXNOTSETXXX,base_ref:XXXNOTSETXXX,environment:XXXNOTSETXXX,event_name:workflow_dispatch,head_ref:XXXNOTSETXXX,iss:XXXNOTSETXXX,job_workflow_ref:XXXNOTSETXXX,job_workflow_sha:XXXNOTSETXXX,ref:refs/heads/main,ref_type:XXXNOTSETXXX,repository:helaili/github-oidc-auth-app,repository_id:XXXNOTSETXXX,repository_owner:helaili,repository_owner_id:XXXNOTSETXXX,repository_visibility:public,run_attempt:XXXNOTSETXXX,run_id:XXXNOTSETXXX,run_number:XXXNOTSETXXX,runner_environment:XXXNOTSETXXX,sub:XXXNOTSETXXX,workflow:Manual Test Workflow,workflow_ref:XXXNOTSETXXX,workflow_sha:XXXNOTSETXXX, but got", strMapClaims)
}
}