jjkiers/html-over-dns
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Add content verification

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Signed-off-by: Jacob Kiers <jacob@jacobkiers.net>
This commit is contained in:
Jacob Kiers
2021-08-21 11:21:55 +02:00
parent 4b117a4743
commit 2d477bb77e
3 changed files with 58 additions and 14 deletions
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49
index.html
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@@ -10,13 +10,20 @@
class Content {
content = "";
type = "";
metaData = {}
metaData = {};
index;
constructor(content, type, metaData = {})
/***
* @param content string
* @param type string
* @param index Index
*/
constructor(content, type, index)
{
this.content = content;
this.type = type;
this.metaData = metaData;
this.index = index;
this.metaData = index.metaData;
}
}
@@ -24,13 +31,15 @@ class Index
{
mimeType = "";
chunks = 0;
hashAlgorithm = "";
hash = "";
metaData = {};
constructor(mimeType, chunks, hash, metaData = {})
constructor(mimeType, chunks, hash, hashAlgorithm, metaData = {})
{
this.mimeType = mimeType;
this.chunks = chunks;
this.hashAlgorithm = hashAlgorithm;
this.hash = hash;
this.metaData = metaData
}
@@ -51,7 +60,8 @@ async function readUrl(domain) {
const chunks = await Promise.all(chunk_promises);
const base64 = chunks.reduce((built, current) => built += current);
return handleContent(new Content(atob(content), index.mimeType, index.metaData));
const content = atob(base64);
return handleContent(new Content(content, index.mimeType, index));
}
async function fetchChunk(id, hash)
@@ -84,7 +94,7 @@ async function fetchIndex(domain)
});
const metadata = JSON.parse(atob(ret["m"]));
return new Index(ret["t"], ret["c"], ret["h"], metadata);
return new Index(ret["t"], ret["c"], ret["h"], ret["ha"], metadata);
}
function handleContent(content)
@@ -110,7 +120,12 @@ function handleContent(content)
function handleJavascript(content)
{
console.log("Got some javascript!", content.content);
console.log("Got some javascript!");
const scripts = document.getElementById("scripts");
const new_script = document.createElement("script");
new_script.text = content.content;
scripts.appendChild(new_script);
}
async function handleMarkdown(content)
@@ -128,20 +143,28 @@ async function handleMarkdown(content)
let title = document.createElement("h1");
title.innerHTML = content.metaData.title;
document.getElementById("post").prepend(title)
document.getElementById("nojs").style.visibility = "hidden";
document.getElementById("nojs").remove();
if (typeof Verifier !== "undefined") {
await (new Verifier()).verify(content);
}
}
</script>
</head>
<body>
<script>
readUrl("posts-2021-08-17-serving-blog-content-over-dns-md");
</script>
<div id="post"></div>
<div id="post"></div>
<div id="verification"></div>
<div id="nojs">
<h1>HTML over DNS</h1>
<p>The content of this page is fetched using DNS over HTTP. Since that requires Javascript, please enable that to see the content.</p>
</div>
<div id="scripts">
<script>
readUrl("scripts-verifier-js").then(
() => readUrl("posts-2021-08-17-serving-blog-content-over-dns-md")
);
</script>
</div>
</body>
</html>