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Diffstat (limited to '')
-rw-r--r-- | browser/components/resistfingerprinting/test/browser/file_hwconcurrency_aboutblank_iframee.html | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/browser/components/resistfingerprinting/test/browser/file_hwconcurrency_aboutblank_iframee.html b/browser/components/resistfingerprinting/test/browser/file_hwconcurrency_aboutblank_iframee.html new file mode 100644 index 0000000000..79edbefe24 --- /dev/null +++ b/browser/components/resistfingerprinting/test/browser/file_hwconcurrency_aboutblank_iframee.html @@ -0,0 +1,28 @@ +<!DOCTYPE html> +<meta charset="utf8"> +<script> +window.onload = async () => { + parent.postMessage("ready", "*"); +} + +window.addEventListener("message", async function listener(event) { + if (event.data[0] == "gimme") { + var iframe = document.createElement("iframe"); + iframe.src = "about:blank?foo"; + document.body.append(iframe); + + function test() { + let result = { + hardwareConcurrency : navigator.hardwareConcurrency + }; + + window.parent.document.querySelector("#result").textContent = JSON.stringify(result); + } + + iframe.contentWindow.eval(`(${test})()`); + + parent.postMessage(JSON.parse(document.querySelector("#result").textContent), "*") + } +}); +</script> +<output id="result"></output> |