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Fixing a Path Traversal Vulnerability #3

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Fixing a Path Traversal Vulnerability #3

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6 changes: 6 additions & 0 deletions web_assembly/ch3/app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,12 @@ const projectName = "calculate_primes";
* dependency 없는 간단한 static web server
*/
const server = http.createServer((req, res) => {
if (path.normalize(decodeURI(req.url)) !== decodeURI(req.url)) {
res.statusCode = 403;
res.end();
return;
}

const relativePath = req.url.substr(1);
const filePath = path.resolve(__dirname, relativePath);
const ext = req.url.substr(req.url.lastIndexOf(".") + 1);
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