Cavemanon/haproxy-protection
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Add check for Webassembly support, and error if unsupported

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Improve errors for 400/500 and failed but check post
Remove spinner when inserting error
This commit is contained in:
Thomas Lynch
2022-10-01 15:36:15 +10:00
parent eede92d47d
commit efe430cf3b
1 changed files with 29 additions and 1 deletions
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30
haproxy/js/challenge.js
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@ -1,7 +1,26 @@
function insertError(str) {
const ring = document.querySelector('.lds-ring');
ring.insertAdjacentHTML('afterend', `<p class="red">Error: ${str}</p>`);
ring.remove();
}
function finishRedirect() {
window.location=location.search.slice(1)+location.hash || "/";
}
const wasmSupported = (() => {
try {
if (typeof WebAssembly === "object"
&& typeof WebAssembly.instantiate === "function") {
const module = new WebAssembly.Module(Uint8Array.of(0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00));
if (module instanceof WebAssembly.Module)
return new WebAssembly.Instance(module) instanceof WebAssembly.Instance;
}
} catch (e) {
}
return false;
})();
function postResponse(powResponse, captchaResponse) {
const body = {
'pow_response': powResponse,
@ -18,14 +37,23 @@ function postResponse(powResponse, captchaResponse) {
body: new URLSearchParams(body),
redirect: 'manual',
}).then(res => {
const s = res.status;
if (s >= 400 && s < 500) {
return insertError('bad challenge response request.');
} else if (s >= 500) {
return insertError('server responded with error.');
}
finishRedirect();
}).catch(err => {
document.querySelector('.lds-ring').insertAdjacentHTML('afterend', '<p class="red">An error occurred.</p>');
insertError('failed to send challenge response.');
});
}
const powFinished = new Promise((resolve, reject) => {
window.addEventListener('DOMContentLoaded', async () => {
if (!wasmSupported) {
return insertError('browser does not support WebAssembly.');
}
const { time, kb, pow, diff } = document.querySelector('[data-pow]').dataset;
const argonOpts = {
time: time,