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#!/usr/bin/env python3
# ------------------------------------------------------------------
# CC0 1.0 Universal
# #
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# ------------------------------------------------------------------
import http.server
import sys
import urllib.request
timeout = 5
pathprefix = None
base_url = None
class Proxy(http.server.BaseHTTPRequestHandler):
server_version = 'Oftgophproxy/0.1'
def error(self, code, text):
contents = text.encode('utf-8')
self.send_response(code)
self.send_header('Content-Type', 'text/plain; charset=utf-8')
self.send_header('Content-Length', len(contents))
self.end_headers()
self.wfile.write(contents)
def do_GET(self):
if self.path[:len(pathprefix)] == pathprefix:
path = self.path[len(pathprefix):]
else:
path = self.path
if len(path) > 0 and path[0] != '/':
path = '/' + path
request_url = base_url + path
try:
r = urllib.request.urlopen(request_url, timeout = timeout)
except urllib.error.HTTPError as err:
if err.code == 400:
self.error(400, 'Remote returned 400 Bad Request\n\nMake sure you remembered to use the itemtype')
else:
self.error(502, 'Remote returned %i %s' % (err.code, err.reason))
return
except urllib.error.URLError as err:
self.error(502, 'Could not connect to remote')
return
mimetype = None
for key, value in r.info().items():
if key.lower() == 'content-type':
mimetype = value
if mimetype is None:
self.error(502, 'Remote did not include content-type')
return
contents = r.read()
self.send_response(200)
self.send_header('Content-Type', mimetype)
self.send_header('Content-Length', len(contents))
self.end_headers()
self.wfile.write(contents)
def main():
global pathprefix
global base_url
if len(sys.argv) != 4:
print('Usage: %s port pathprefix remote' % sys.argv[0], file=sys.stderr)
sys.exit(1)
try:
port = int(sys.argv[1])
except ValueError:
print('%s: Error: "%s" not a valid port number' % sys.argv[0], file=sys.stderr)
sys.exit(1)
if port <= 0 or port >= (2**16):
print('%s: Error: Port number %i out of valid range' % (sys.argv[0], port))
sys.exit(1)
pathprefix = sys.argv[2]
base_url = sys.argv[3]
http.server.HTTPServer(('', port), Proxy).serve_forever()
if __name__ == '__main__':
main()