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preview 404 page, preview security fix

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404 page now shows when running preview
fix path traversal attack. preview.ts not meant to be used in production (this is a static site!), but hey
This commit is contained in:
Jon Dough
2024-02-28 07:41:33 +05:30
parent edbcde7867
commit 3ee5d4a416
1 changed files with 11 additions and 5 deletions
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16
preview.ts
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@@ -11,11 +11,17 @@ createServer((req, res) => {
} else {
req_path = path.join(__dirname, "build", req.url);
}
if (!existsSync(req_path)) {
res.writeHead(404);
//write file
res.write("404");
let status_code = 200;
//req.url.includes("..")
if (!req_path.startsWith(path.join(__dirname, "build"))) {
//nice try, bad request
res.writeHead(400);
res.write("400");
return res.end();
} else if (!existsSync(req_path)) {
status_code = 404;
//serve 404 page instead of non-existent page
req_path = path.join(__dirname, "build", "404.html");
}
//set content type
let non_utf8_content_types: string[] = ["image/png", "image/gif", "image/jpeg", "video/mp4"];
@@ -49,7 +55,7 @@ createServer((req, res) => {
default:
content_type = "text/plain";
}
res.writeHead(200, {
res.writeHead(status_code, {
"Content-Type": content_type,
});
//write file