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Better debugging mail server

Author:
yourcelf
Posted:
February 21, 2011
Language:
Python
Version:
1.2
Score:
0 (after 0 ratings)

Python includes (and Django recommends) a simple email debugging server which prints mail to stdout. The trouble is, unlike any half-competent mail reader, long lines are broken up, and thus long URLs don't work without modification.

This snippet simply unwraps long lines (broken by "=") so long URLs can be easily copied/pasted from the terminal.

Save this snippet into a file named "better.py" and execute it.

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#!/usr/bin/env python
"""
Like the built-in debugging server, but unwarps long lines for easier
copy/paste of URLs.
"""
from __future__ import print_function
from smtpd import SMTPServer
import os

class DebuggingServer(SMTPServer):
    def process_message(self, peer, mailfrom, rcpttos, data):
        inheaders = 1
        lines = data.split('\n')
        print('---------- MESSAGE FOLLOWS ----------')
        for line in lines:
            # headers first
            if inheaders and not line:
                print('X-Peer:', peer[0])
                inheaders = 0
            if line.endswith('='):
                print(line[:-1], end='')
            else:
                print(line)
        print('------------ END MESSAGE ------------')

if __name__ == "__main__":
    os.system("python -m smtpd -n -c better.DebuggingServer localhost:1025")

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