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Make sure thumbnail is a valid image

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Fixes #1239.
Fixes #1180.
This commit is contained in:
Pavel Djundik 2017-06-22 22:32:13 +03:00
parent f55d765aae
commit 3fd2849a37
1 changed files with 20 additions and 1 deletions
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21
src/plugins/irc-events/link.js
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@ -58,6 +58,25 @@ function parse(msg, url, res, client) {
$("meta[property=\"og:image\"]").attr("content")
|| $("meta[name=\"twitter:image:src\"]").attr("content")
|| "";
// Make sure thumbnail is a valid url
if (!/^https?:\/\//.test(toggle.thumb)) {
toggle.thumb = "";
}
// Verify that thumbnail pic exists and is under allowed size
if (toggle.thumb.length) {
fetch(escapeHeader(toggle.thumb), (resThumb) => {
if (!(/^image\/.+/.test(resThumb.type)) || resThumb.size > (Helper.config.prefetchMaxImageSize * 1024)) {
toggle.thumb = "";
}
client.emit("toggle", toggle);
});
return;
}
break;
case "image/png":
@ -96,7 +115,7 @@ function fetch(url, cb) {
var limit = Helper.config.prefetchMaxImageSize * 1024;
req
.on("response", function(res) {
if (!(/(image\/.+)/.test(res.headers["content-type"]))) {
if (!(/^image\/.+/.test(res.headers["content-type"]))) {
// if not image, limit download to 10kb, since we need only meta tags
limit = 1024 * 10;
}