#2687 - Include mimeo python module

modules/adblockplus/files/mimeo.py

+#!/usr/bin/env python3
+
+import argparse
+import logging
+import sys
+
+from http.server import BaseHTTPRequestHandler, HTTPServer
+from string import Template
+
+PUNCTUATION = """!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~"""
+PROXY_TOKEN = 'http_'
+
+
+class Handler(BaseHTTPRequestHandler):
+    def get_header_values(self, log_format):

[Vasily Kuznetsov, 2017/08/07 13:06:41]

What about not passing `log_format`? You can always just access it via
`self.log_format`.

[f.lopez, 2017/08/07 18:40:01]

Done.

+        values = {}
+        for var in log_format.split():
+            name = var.strip()

[Vasily Kuznetsov, 2017/08/07 13:06:41]

Shouldn't you remove punctuation here instead of spaces? If the variables will
look like "$http_var" or "${http_var}", this will not work. Or am I missing
something?

[f.lopez, 2017/08/07 18:40:01]

Done.

+            if name.startswith(PROXY_TOKEN):
+                name = var.strip(PUNCTUATION)
+                new_var = name[len(PROXY_TOKEN):].title()
+                values[name] = self.headers.get(new_var, '-')
+        return values
+
+    def message_log(self, form, args):

[Vasily Kuznetsov, 2017/08/07 13:06:40]

This name is somewhat confusing, looks like a method returning a message log,
instead of a method that's logging something. Maybe call it 'log_info' instead,
if you want to avoid name collision with 'log_message'?

[f.lopez, 2017/08/07 18:40:02]

Done.

+        message = Template(form)
+        logging.info(message.safe_substitute(args))
+
+    def do_POST(self):
+        status = 200
+        content = bytes(self.response, 'UTF-8')
+        values = {
+            'remote_addr': self.address_string(),
+            'time_local': self.log_date_time_string(),
+            'request': self.requestline,
+            'status': status,
+            'bytes_sent"': len(content),

[Vasily Kuznetsov, 2017/08/07 13:06:40]

Oops, double quote :)

[f.lopez, 2017/08/07 18:40:01]

Done.

+            'Content-Type': 'text/plain',
+            'Content-Length': len(content),
+        }
+        values.update(self.get_header_values(self.log_format))
+        self.message_log(self.log_format, values)
+        self.send_response(status)
+        self.send_header('Content-Type', values['Content-Type'])
+        self.send_header('Content-Length', values['Content-Length'])
+        self.end_headers()
+        self.wfile.write(content)
+        self.log_request(200)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--port', action='store',
+                        default=8000, type=int,
+                        nargs='?',
+                        help='Specify alternate port [default: 8000]')

[Vasily Kuznetsov, 2017/08/07 13:06:40]

I don't think you need "Specify" here either.

[f.lopez, 2017/08/07 18:40:02]

Done.

+    parser.add_argument('--response', action='store',
+                        type=str, nargs='?', default='OK',
+                        help='The response send to the client')
+    parser.add_argument('--log_format', action='store',

[Vasily Kuznetsov, 2017/08/07 13:06:40]

Probably having some kind of default log format would be good. Does this
actually work without a default?

[f.lopez, 2017/08/07 18:40:01]

Done.

+                        type=str, nargs='?',
+                        help='Format of the log ouput')
+    parser.add_argument('log_file', action='store',
+                        type=str, nargs='?', default=sys.stdout,

[Vasily Kuznetsov, 2017/08/07 13:06:40]

Can you pass `sys.stdout` as `filename` to `logging.basicConfig`? For me it just
throws an exception.

[f.lopez, 2017/08/07 18:40:02]

You are right, I got the error as well, I'm pretty sure I tested this...

+                        help='The file where the logs will be written')
+    args = parser.parse_args()
+    handler_class = Handler
+    server_class = HTTPServer
+    setattr(handler_class, 'log_format', args.log_format)
+    setattr(handler_class, 'response', args.response)
+    server_address = ('', args.port)
+    httpd = server_class(server_address, handler_class)
+    logging.basicConfig(filename=args.log_file, level=logging.INFO)
+    httpd.serve_forever()