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Get rid of dependence on usercontent.riot.im

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This commit is contained in:
Michael Telatynski 2020-02-07 22:07:30 +00:00
parent 54f7347da5
commit 98773df76e
6 changed files with 77 additions and 12 deletions
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4
src/vector/modernizr.js
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src/vector/usercontent/index.html Normal file
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<html>
<head>
<!--
Hello! If you're reading this, perhaps you're wondering what this
file is doing and why your Riot is using it.
In short, this allows Riot to isolate potentially unsafe encrypted
attachments into their own origin, away from your Riot.
Stay curious!
-->
</head>
<body></body>
</html>

48
src/vector/usercontent/index.js Normal file
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var params = window.location.search.substring(1).split('&');
var lockOrigin;
for (var i = 0; i < params.length; ++i) {
var parts = params[i].split('=');
if (parts[0] === 'origin') lockOrigin = decodeURIComponent(parts[1]);
}
function remoteRender(event) {
const data = event.data;
const img = document.createElement("img");
img.id = "img";
img.src = data.imgSrc;
const a = document.createElement("a");
a.id = "a";
a.rel = data.rel;
a.target = data.target;
a.download = data.download;
a.style = data.style;
a.style.fontFamily = "Arial, Helvetica, Sans-Serif";
a.href = window.URL.createObjectURL(data.blob);
a.appendChild(img);
a.appendChild(document.createTextNode(data.textContent));
const body = document.body;
// Don't display scrollbars if the link takes more than one line to display.
body.style = "margin: 0px; overflow: hidden";
body.appendChild(a);
}
function remoteSetTint(event) {
const data = event.data;
const img = document.getElementById("img");
img.src = data.imgSrc;
img.style = data.imgStyle;
const a = document.getElementById("a");
a.style = data.style;
}
window.onmessage = function(e) {
if (lockOrigin === undefined || e.origin === lockOrigin) {
if (e.data.blob) remoteRender(e);
else remoteSetTint(e);
}
};