43 lines
1.5 KiB
Python
Executable File
43 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env python3
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import http.server, http.client, sys, re
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proxyConfig = b'''function FindProxyForURL(url, host) {
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if (/^http:\/\/boards\.4chan\.org\//.test(url)) {
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return 'PROXY localhost:8000';
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}
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return 'DIRECT';
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}
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'''
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class ExtensionReplacer(http.server.BaseHTTPRequestHandler):
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def do_HEAD(self):
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self.do_GET()
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def do_GET(self):
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if self.path == '/proxy.pac':
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self.send_response(200, 'OK')
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self.send_header('Content-Length', len(proxyConfig))
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self.end_headers()
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if self.command != 'HEAD':
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self.wfile.write(proxyConfig)
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else:
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del self.headers['Accept-Encoding']
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conn = http.client.HTTPConnection('boards.4chan.org')
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conn.request('GET', self.path, headers=self.headers)
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response = conn.getresponse()
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body = response.read()
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body = body.replace(b'<head>', b'<head><script src="https://ccd0.github.io/4chan-x/builds/4chan-X.user.js"></script>', 1)
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self.send_response(response.status, response.reason)
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for header, value in response.getheaders():
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if header.lower() not in ('date', 'connection', 'transfer-encoding', 'content-length'):
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self.send_header(header, value)
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self.send_header('Content-Length', len(body))
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self.end_headers()
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if self.command != 'HEAD':
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self.wfile.write(body)
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conn.close()
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port = int(sys.argv[1]) if 1 < len(sys.argv) else 8000
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httpd = http.server.HTTPServer(('localhost', port), ExtensionReplacer)
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httpd.serve_forever()
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