chore: harden schema validators (CycloneDX#859)

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Author: jkowalleck

tools/src/test/js/json-schema-functional-tests.js

@@ -56,6 +56,7 @@ const ajv = new Ajv({
     strict: false,
     validateFormats: true,
     addUsedSchema: false,
+    loadSchema: (uri) => { throw new Error(`Remote schemas are disabled: ${uri}`) },
     schemas: {
         'http://cyclonedx.org/schema/spdx.schema.json': spdxSchema,
         'http://cyclonedx.org/schema/jsf-0.82.schema.json': jsfSchema,

tools/src/test/js/json-schema-lint-tests.js

@@ -52,6 +52,7 @@ function getAjv(strict) {
         addUsedSchema: false,
         allowUnionTypes: false,
         keywords: ["meta:enum"],
+        loadSchema: (uri) => { throw new Error(`Remote schemas are disabled: ${uri}`) },
         schemas: {
             'http://cyclonedx.org/schema/spdx.schema.json': spdxSchema,
             'http://cyclonedx.org/schema/jsf-0.82.schema.json': jsfSchema,