Now, let's have a look at an example URL redirector program in Python, which can be extended to fit any scenario:
#!/usr/bin/env python
import sys
def redirect_url(line, concurrent):
list = line.split(' ')
# 1st or 2nd element of the list
# is the URL depending on concurrency
if concurrent:
old_url = list[1]
else:
old_url = list[0]
# Do remember that the new_url
# should contain a '\n' at the end.
new_url = '\n'
# Take the decision and modify the url if needed
if old_url.endswith('.avi'):
# Rewrite example
new_url = 'http://example.com/' + new_url
elif old_url.endswith('.exe'):
# Redirect example
new_url = '302:http://google.co.in/' + new_url
return new_url
def main(concurrent = True):
# the format of the line read from stdin with concurrency is
# ID URL ip-address/fqdn ident method myip=ip myport=port
# and with concurrency disabled is
# URL ip-address/fqdn ident...