| // META: script=../resources/utils.js |
| // META: script=/common/get-host-info.sub.js |
| |
| const url = get_host_info().HTTP_REMOTE_ORIGIN + dirname(location.pathname) + RESOURCES_DIR + "preflight.py", |
| origin = location.origin // assuming an ASCII origin |
| |
| function preflightTest(succeeds, withCredentials, allowMethod, allowHeader, useMethod, useHeader) { |
| return promise_test(t => { |
| let testURL = url + "?", |
| requestInit = {} |
| if (withCredentials) { |
| testURL += "origin=" + origin + "&" |
| testURL += "credentials&" |
| requestInit.credentials = "include" |
| } |
| if (useMethod) { |
| requestInit.method = useMethod |
| } |
| if (useHeader.length > 0) { |
| requestInit.headers = [useHeader] |
| } |
| testURL += "allow_methods=" + allowMethod + "&" |
| testURL += "allow_headers=" + allowHeader + "&" |
| |
| if (succeeds) { |
| return fetch(testURL, requestInit).then(resp => { |
| assert_equals(resp.headers.get("x-origin"), origin) |
| }) |
| } else { |
| return promise_rejects_js(t, TypeError, fetch(testURL, requestInit)) |
| } |
| }, "CORS that " + (succeeds ? "succeeds" : "fails") + " with credentials: " + withCredentials + "; method: " + useMethod + " (allowed: " + allowMethod + "); header: " + useHeader + " (allowed: " + allowHeader + ")") |
| } |
| |
| // "GET" does not pass the case-sensitive method check, but in the safe list. |
| preflightTest(true, false, "get", "x-test", "GET", ["X-Test", "1"]) |
| // Headers check is case-insensitive, and "*" works as any for method. |
| preflightTest(true, false, "*", "x-test", "SUPER", ["X-Test", "1"]) |
| // "*" works as any only without credentials. |
| preflightTest(true, false, "*", "*", "OK", ["X-Test", "1"]) |
| preflightTest(false, true, "*", "*", "OK", ["X-Test", "1"]) |
| preflightTest(false, true, "*", "", "PUT", []) |
| preflightTest(false, true, "get", "*", "GET", ["X-Test", "1"]) |
| preflightTest(false, true, "*", "*", "GET", ["X-Test", "1"]) |
| // Exact character match works even for "*" with credentials. |
| preflightTest(true, true, "*", "*", "*", ["*", "1"]) |
| |
| // The following methods are upper-cased for init["method"] by |
| // https://fetch.spec.whatwg.org/#concept-method-normalize |
| // but not in Access-Control-Allow-Methods response. |
| // But they are https://fetch.spec.whatwg.org/#cors-safelisted-method, |
| // CORS anyway passes regardless of the cases. |
| for (const METHOD of ['GET', 'HEAD', 'POST']) { |
| const method = METHOD.toLowerCase(); |
| preflightTest(true, true, METHOD, "*", METHOD, []) |
| preflightTest(true, true, METHOD, "*", method, []) |
| preflightTest(true, true, method, "*", METHOD, []) |
| preflightTest(true, true, method, "*", method, []) |
| } |
| |
| // The following methods are upper-cased for init["method"] by |
| // https://fetch.spec.whatwg.org/#concept-method-normalize |
| // but not in Access-Control-Allow-Methods response. |
| // As they are not https://fetch.spec.whatwg.org/#cors-safelisted-method, |
| // Access-Control-Allow-Methods should contain upper-cased methods, |
| // while init["method"] can be either in upper or lower case. |
| for (const METHOD of ['DELETE', 'PUT']) { |
| const method = METHOD.toLowerCase(); |
| preflightTest(true, true, METHOD, "*", METHOD, []) |
| preflightTest(true, true, METHOD, "*", method, []) |
| preflightTest(false, true, method, "*", METHOD, []) |
| preflightTest(false, true, method, "*", method, []) |
| } |
| |
| // "PATCH" is NOT upper-cased in both places because it is not listed in |
| // https://fetch.spec.whatwg.org/#concept-method-normalize. |
| // So Access-Control-Allow-Methods value and init["method"] should match |
| // case-sensitively. |
| preflightTest(true, true, "PATCH", "*", "PATCH", []) |
| preflightTest(false, true, "PATCH", "*", "patch", []) |
| preflightTest(false, true, "patch", "*", "PATCH", []) |
| preflightTest(true, true, "patch", "*", "patch", []) |