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validate-headers.html
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<!DOCTYPE html>
<meta charset=utf-8>
<title>Attribution Reporting Header Validation</title>
<link
rel="icon"
href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🔷</text></svg>"
/>
<style>
* {
box-sizing: border-box;
}
html {
height: 100vh;
margin: 0;
padding: 0;
}
body {
margin: 0;
padding: 1em;
}
body,
form,
textarea,
#output {
height: 100%;
width: 100%;
}
body,
form,
#right {
display: flex;
}
body,
#right {
flex-direction: column;
}
#header {
flex: none;
}
#input {
flex: 1;
}
textarea {
resize: none;
}
</style>
<body>
<h1>Attribution Reporting Header Validation</h1>
<form>
<noscript>JavaScript is required to use this form.</noscript>
<fieldset id=input>
<legend>Value</legend>
<textarea></textarea>
</fieldset>
<div id="right">
<fieldset id=header>
<legend>Header</legend>
<p><label><input type=radio name=header value=source><code>Attribution-Reporting-Register-Source</code></label>
<p><label><input type=radio name=header value=trigger><code>Attribution-Reporting-Register-Trigger</code></label>
<p><label><input type=radio name=header value=os-source><code>Attribution-Reporting-Register-OS-Source</code></label>
<p><label><input type=radio name=header value=os-trigger><code>Attribution-Reporting-Register-OS-Trigger</code></label>
<p><label><input type=radio name=header value=eligible><code>Attribution-Reporting-Eligible</code></label>
</fieldset>
<fieldset id=output>
<legend>Validation Result</legend>
<button type=button id=linkify>Copy Link</button>
<output>
<div id=success></div>
<p>Errors:
<ul id=errors></ul>
<p>Warnings:
<ul id=warnings></ul>
</output>
</fieldset>
</div>
</form>
<template id="pathful-issue">
<li><code></code> <span></span></li>
</template>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/browser/structured-header.min.js"></script>
<script defer type=module>
import { validateJSON, validateSource, validateTrigger } from './validate-json.js';
import { validateEligible } from './validate-eligible.js';
import { validateRegisterOsSource, validateRegisterOsTrigger } from './validate-os.js';
const form = document.querySelector('form');
const input = form.querySelector('textarea');
const errorList = document.querySelector('#errors');
const warningList = document.querySelector('#warnings');
const successDiv = document.querySelector('#success');
const pathfulTmpl = document.querySelector('#pathful-issue');
const pathPart = p =>
typeof p === 'string' ? `["${p}"]` : `[${p}]`;
const makeLi = ({path, msg}) => {
let li;
if (path instanceof Array) {
if (path.length === 0) {
li = document.createElement('li');
li.textContent = `JSON root ${msg}`;
} else {
li = pathfulTmpl.content.cloneNode(true);
li.querySelector('code').textContent = path.map(pathPart).join('');
li.querySelector('span').textContent = msg;
}
} else {
li = document.createElement('li');
li.textContent = msg;
}
return li;
};
const header = () => form.elements['header'].value;
form.addEventListener('input', () => {
let result;
switch (header()) {
case 'source':
result = validateJSON(input.value, validateSource);
break;
case 'trigger':
result = validateJSON(input.value, validateTrigger);
break;
case 'os-source':
result = validateRegisterOsSource(input.value);
break;
case 'os-trigger':
result = validateRegisterOsTrigger(input.value);
break;
case 'eligible':
result = validateEligible(input.value);
break;
default:
return;
}
const successEl = document.createElement('div');
if (result?.errors?.length === 0 && result?.warnings?.length === 0) {
successEl.textContent = 'The header is valid.';
} else {
successEl.textContent = '';
}
successDiv.replaceChildren(successEl);
errorList.replaceChildren(...result.errors.map(makeLi));
warningList.replaceChildren(...result.warnings.map(makeLi));
});
document.querySelector('#linkify').addEventListener('click', async () => {
const url = new URL(location);
url.search = '';
url.searchParams.set('header', header());
url.searchParams.set('json', input.value);
await navigator.clipboard.writeText(url.toString());
});
// Note: The `json` and `header` query params are relied on by DevTools as of
// https://crrev.com/c/devtools/devtools-frontend/+/4076187, so they must not
// be changed in an incompatible way.
const params = new URLSearchParams(location.search);
const json = params.get('json');
if (json) {
input.value = json;
}
switch (params.get('header')) {
case 'eligible':
form.querySelector('input[value=eligible]').click();
break;
case 'os-source':
form.querySelector('input[value=os-source]').click();
break;
case 'os-trigger':
form.querySelector('input[value=os-trigger]').click();
break;
case 'trigger':
form.querySelector('input[value=trigger]').click();
break;
default:
form.querySelector('input[value=source]').click();
break;
}
</script>