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package oidc |
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import ( |
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"crypto/ecdsa" |
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"crypto/elliptic" |
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"crypto/rand" |
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"crypto/rsa" |
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"encoding/json" |
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"fmt" |
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"net" |
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"net/http" |
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"net/http/httptest" |
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"github.com/go-jose/go-jose/v3" |
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"github.com/golang-jwt/jwt/v4" |
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) |
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type fakeOidcProvider struct { |
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issuerURL string |
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authPath string |
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tokenPath string |
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userInfoPath string |
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JWKSPath string |
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algorithms []string |
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keyIds map[jwt.SigningMethod]string |
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jwks []jose.JSONWebKey |
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rsaPrivateKey *rsa.PrivateKey |
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rsaPrivateKeyForPS *rsa.PrivateKey |
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ecdsaPrivateKey *ecdsa.PrivateKey |
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hmacKey []byte |
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} |
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func newFakeOidcProvider(issuerURL string) (*fakeOidcProvider, error) { |
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rsaPrivateKey, err := rsa.GenerateKey(rand.Reader, 2048) |
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if err != nil { |
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return nil, err |
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} |
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rsaPrivateKeyForPS, err := rsa.GenerateKey(rand.Reader, 2048) |
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if err != nil { |
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return nil, err |
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} |
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ecdsaPrivateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) |
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if err != nil { |
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return nil, err |
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} |
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hmacKey := []byte("hmackeysecret") |
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keyIds := map[jwt.SigningMethod]string{ |
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jwt.SigningMethodRS256: "rs256keyid", |
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} |
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jwks := []jose.JSONWebKey{ |
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{ |
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Key: rsaPrivateKey.Public(), |
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KeyID: keyIds[jwt.SigningMethodRS256], |
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Algorithm: "RS256", |
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Use: "sig", |
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}, |
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} |
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return &fakeOidcProvider{ |
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issuerURL: issuerURL, |
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authPath: "/auth", |
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tokenPath: "/token", |
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userInfoPath: "/userInfo", |
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JWKSPath: "/jwks", |
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algorithms: []string{"RS256", "HS256", "ES256", "PS256"}, |
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rsaPrivateKey: rsaPrivateKey, |
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rsaPrivateKeyForPS: rsaPrivateKeyForPS, |
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hmacKey: hmacKey, |
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jwks: jwks, |
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ecdsaPrivateKey: ecdsaPrivateKey, |
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keyIds: keyIds, |
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}, nil |
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} |
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func (s *fakeOidcProvider) ServeHTTP(w http.ResponseWriter, r *http.Request) { |
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switch r.URL.Path { |
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case "/.well-known/openid-configuration": |
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s.ResponseWellKnown(w, r) |
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case s.JWKSPath: |
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s.ResponseJWKS(w, r) |
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case s.authPath, s.tokenPath, s.userInfoPath: |
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httpError(w, 404) |
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} |
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} |
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type providerJSON struct { |
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Issuer string `json:"issuer"` |
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AuthURL string `json:"authorization_endpoint"` |
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TokenURL string `json:"token_endpoint"` |
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JWKSURL string `json:"jwks_uri"` |
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UserInfoURL string `json:"userinfo_endpoint"` |
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Algorithms []string `json:"id_token_signing_alg_values_supported"` |
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} |
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func (s *fakeOidcProvider) ResponseWellKnown(w http.ResponseWriter, r *http.Request) { |
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jso := providerJSON{ |
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Issuer: s.issuerURL, |
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AuthURL: s.issuerURL + s.authPath, |
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TokenURL: s.issuerURL + s.tokenPath, |
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JWKSURL: s.issuerURL + s.JWKSPath, |
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UserInfoURL: s.issuerURL + s.userInfoPath, |
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Algorithms: s.algorithms, |
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} |
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httpJSON(w, jso) |
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} |
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func (s *fakeOidcProvider) ResponseJWKS(w http.ResponseWriter, r *http.Request) { |
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jwks := &jose.JSONWebKeySet{ |
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Keys: s.jwks, |
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} |
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httpJSON(w, jwks) |
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} |
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func httpJSON(w http.ResponseWriter, v interface{}) { |
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w.Header().Set("Content-Type", "application/json") |
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e := json.NewEncoder(w) |
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e.SetIndent("", " ") |
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if err := e.Encode(v); err != nil { |
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httpError(w, http.StatusInternalServerError) |
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return |
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} |
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} |
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func httpError(w http.ResponseWriter, code int) { |
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http.Error(w, http.StatusText(code), code) |
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} |
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func (s *fakeOidcProvider) SignIDToken(unsignedToken *jwt.Token) (string, error) { |
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signedToken := "" |
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var err error |
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switch unsignedToken.Method { |
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case jwt.SigningMethodRS256: |
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signedToken, err = unsignedToken.SignedString(s.rsaPrivateKey) |
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default: |
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return "", fmt.Errorf("incorrect signing method type, supported algorithms: HS256, RS256, ES256, PS256") |
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} |
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if err != nil { |
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return "", err |
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} |
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return signedToken, nil |
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} |
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func createUnsignedToken(regClaims jwt.RegisteredClaims, method jwt.SigningMethod) *jwt.Token { |
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claims := struct { |
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jwt.RegisteredClaims |
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}{ |
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RegisteredClaims: regClaims, |
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} |
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token := jwt.NewWithClaims(method, claims) |
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return token |
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} |
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func fakeHttpServer(url string, handler http.HandlerFunc) (*httptest.Server, error) { |
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l, err := net.Listen("tcp", url) |
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if err != nil { |
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return nil, err |
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} |
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ts := httptest.NewUnstartedServer(handler) |
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_ = ts.Listener.Close() |
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ts.Listener = l |
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ts.Start() |
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return ts, nil |
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} |
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Permify /
permify
