iwla/plugins/pre_analysis/robots.py

65 lines
1.8 KiB
Python

import re
from iwla import IWLA
from iplugin import IPlugin
from awstats_robots_data import awstats_robots
class IWLAPreAnalysisRobots(IPlugin):
def __init__(self, iwla):
super(IWLAPreAnalysisRobots, self).__init__(iwla)
self.API_VERSION = 1
def load(self):
global awstats_robots
self.awstats_robots = map(lambda (x) : re.compile(x, re.IGNORECASE), awstats_robots)
return True
# Basic rule to detect robots
def hook(self, iwla):
hits = iwla.getCurrentVisists()
for k in hits.keys():
super_hit = hits[k]
if super_hit['robot']: continue
isRobot = False
referers = 0
first_page = super_hit['requests'][0]
if first_page['time_decoded'].tm_mday == super_hit['last_access'].tm_mday:
for r in self.awstats_robots:
if r.match(first_page['http_user_agent']):
super_hit['robot'] = 1
continue
# 1) no pages view --> robot
if not super_hit['viewed_pages']:
super_hit['robot'] = 1
continue
# 2) pages without hit --> robot
if not super_hit['viewed_hits']:
super_hit['robot'] = 1
continue
for hit in super_hit['requests']:
# 3) /robots.txt read
if hit['extract_request']['http_uri'] == '/robots.txt':
isRobot = True
break
# 4) Any referer for hits
if not hit['is_page'] and hit['http_referer']:
referers += 1
if isRobot:
super_hit['robot'] = 1
continue
if super_hit['viewed_hits'] and not referers:
super_hit['robot'] = 1
continue