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pyhedgehog/nginx.conf

Last active June 16, 2025 02:38
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Raw
nginx.conf
# nginx.conf
#user nginx;
worker_processes 3;
error_log /tmp/bug-njs-fetch/error.log warn;
pid /tmp/bug-njs-fetch/nginx.pid;
load_module modules/ngx_http_js_module.so;
events {
}
http {
default_type application/octet-stream;
log_subrequest on;
access_log /tmp/bug-njs-fetch/access.log combined;
js_import nginx.js;
server {
listen 8080;
server_name *.example.com;
root /usr/share/nginx/html;
location /bug/ {
js_content nginx.fetchbug;
}
location /fix/ {
js_content nginx.fetchfix;
}
location /sub/ {
add_header X-Nginx-Block /sub/;
add_header X-Nginx-Host $host;
# js_set $body nginx.getbody;
# return 200 '$server_name=$request$body';
js_content nginx.bodypage;
}
location / {
try_files $uri /sub/$uri;
}
}
}
Raw
nginx.js
async function fetchbug(r, fix) {
var url = `${r.variables.scheme}://127.0.0.1:${r.variables.server_port}/sub${r.variables.uri}`;
ngx.log(ngx.ERR, `fetchbug(${fix}): url=${url}`);
var headers = new Headers(r.headersIn);
var method = r.method;
var body = r.requestText||'';
if(fix)
headers.delete('content-length');
ngx.log(ngx.ERR, `fetchbug(${fix}): url=${url}, opts=${njs.dump({method, headers, body})}`);
var reply = await ngx.fetch(url, {method, headers, body});
reply.headers.forEach((n)=>{
var l = reply.headers.getAll(n), ln = n.toLowerCase();
var skip = (ln === 'connection')||(ln==='content-length');
if(!skip)
r.headersOut[n] = l;
});
var outbody = await reply.text();
r.return(reply.status, outbody);
}
async function fetchfix(r) {
return fetchbug(r, true);
}
function getbody(r) {
var res = (r.requestText===undefined)?'':('\n'+r.requestText);
ngx.log(ngx.ERR, `getbody: text=${njs.dump(r.requestText)}, empty=${r.requestText===undefined}, res=${njs.dump(res)}`);
return res;
}
async function bodypage(r) {
var body = getbody(r);
r.return(200, `${r.variables.server_name}=${r.variables.request}${body}`);
}
export default {
fetchbug,
fetchfix,
getbody,
bodypage
}
Raw
nginx.sh
#!/bin/bash
cd "$(dirname "$0")"
mkdir -p /tmp/bug-njs-fetch
ln -sf /proc/self/fd/2 /tmp/bug-njs-fetch/error.log
ln -sf /proc/self/fd/1 /tmp/bug-njs-fetch/access.log
nginx -c "$PWD/nginx.conf" -g 'daemon off;'
Raw
showbug.md 
$ rm -rf /tmp/bug-njs-fetch;mkdir -p /tmp/bug-njs-fetch
$ nginx -c "$PWD/nginx.conf" -g 'daemon off;'&
$ curl -s http://127.0.0.1:8080/123
*.example.com=GET /123 HTTP/1.1
$ curl -s http://127.0.0.1:8080/123 --json '123'
*.example.com=POST /123 HTTP/1.1
123
$ curl -s http://127.0.0.1:8080/bug/123
*.example.com=GET /sub/bug/123 HTTP/1.1
$ curl -s http://127.0.0.1:8080/fix/123
*.example.com=GET /sub/fix/123 HTTP/1.1
$ curl -s http://127.0.0.1:8080/bug/123 --json '123'
<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx/1.24.0 (Ubuntu)</center>
</body>
</html>

$ curl -s http://127.0.0.1:8080/fix/123 --json '123'
*.example.com=POST /sub/fix/123 HTTP/1.1
123
$ curl -s http://127.0.0.1:8080/bug/123 -XPOST
*.example.com=POST /sub/bug/123 HTTP/1.1
$ curl -s http://127.0.0.1:8080/fix/123 -XPOST
*.example.com=POST /sub/fix/123 HTTP/1.1
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