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package balancer |
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import ( |
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"context" |
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"encoding/json" |
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"fmt" |
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"net/http" |
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"net/url" |
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"strings" |
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"github.com/Permify/permify/internal/config" |
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) |
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// secureTokenCredentials represents a map used for storing secure tokens. |
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// These tokens require transport security. |
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type secureTokenCredentials map[string]string |
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// RequireTransportSecurity indicates that transport security is required for these credentials. |
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func (c secureTokenCredentials) RequireTransportSecurity() bool { |
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return true // Transport security is required for secure tokens. |
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} |
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// GetRequestMetadata retrieves the current metadata (secure tokens) for a request. |
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func (c secureTokenCredentials) GetRequestMetadata(context.Context, ...string) (map[string]string, error) { |
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return c, nil // Returns the secure tokens as metadata with no error. |
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} |
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// nonSecureTokenCredentials represents a map used for storing non-secure tokens. |
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// These tokens do not require transport security. |
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type nonSecureTokenCredentials map[string]string |
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// RequireTransportSecurity indicates that transport security is not required for these credentials. |
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func (c nonSecureTokenCredentials) RequireTransportSecurity() bool { |
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return false // Transport security is not required for non-secure tokens. |
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} |
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// GetRequestMetadata retrieves the current metadata (non-secure tokens) for a request. |
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func (c nonSecureTokenCredentials) GetRequestMetadata(_ context.Context, _ ...string) (map[string]string, error) { |
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return c, nil // Returns the non-secure tokens as metadata with no error. |
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} |
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// OIDCTokenResponse represents the response from the OIDC token endpoint |
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type OIDCTokenResponse struct { |
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AccessToken string `json:"access_token"` |
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} |
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func getOIDCToken(ctx context.Context, issuer, clientID string) (string, error) { |
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// Prepare the request data |
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data := url.Values{} |
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data.Set("client_id", clientID) |
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data.Set("grant_type", "client_credentials") |
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// Create the request |
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req, err := http.NewRequestWithContext(ctx, "POST", issuer+"/token", strings.NewReader(data.Encode())) |
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if err != nil { |
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return "", fmt.Errorf("error creating token request: %v", err) |
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} |
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req.Header.Add("Content-Type", "application/x-www-form-urlencoded") |
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// Send the request |
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client := &http.Client{} |
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resp, err := client.Do(req) |
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if err != nil { |
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return "", fmt.Errorf("error sending token request: %v", err) |
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} |
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defer resp.Body.Close() |
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// Decode the response |
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var tokenResponse OIDCTokenResponse |
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if err := json.NewDecoder(resp.Body).Decode(&tokenResponse); err != nil { |
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return "", fmt.Errorf("error decoding token response: %v", err) |
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} |
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return tokenResponse.AccessToken, nil |
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} |
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// setupAuthn configures the authentication token based on the provided authentication method. |
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// It returns the token string and an error if any. |
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func setupAuthn(ctx context.Context, authn *config.Authn) (string, error) { |
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var token string |
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var err error |
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switch authn.Method { |
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case "preshared": |
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token = authn.Preshared.Keys[0] |
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case "oidc": |
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token, err = getOIDCToken(ctx, authn.Oidc.Issuer, authn.Oidc.ClientID) |
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if err != nil { |
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return "", fmt.Errorf("failed to get OIDC token: %s", err) |
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} |
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default: |
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return "", fmt.Errorf("unknown authentication method: '%s'", authn.Method) |
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} |
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return token, nil |
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} |
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Permify /
permify
