Clearer argument handling, pep8, import order, less unused vars (#123)

* Proposal for less redundant argument handling, autopep8, sorted imports, etc.
* dest labels in sync with local target vars and safe names
* only one special handling before transfer of values to local vars (headers prompt)
* some initial comments - there was a quest for help on documentation ;-)
* few oneliners from if else variable setters
* left the simple script style as is (might be a preference for author and users)
* Adapted code for static checks and removed unused mports sys and requests, many unused  variables remain

.travis.yml

@@ -13,3 +13,4 @@ before_script:
   - flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
 script:
   - python xsstrike.py -u "https://public-firing-range.appspot.com/reflected/index.html" --crawl
+  - echo "No" > input.txt && python xsstrike.py -u https://public-firing-range.appspot.com/reflected/parameter/body?q=query < input.txt

core/checker.py

@@ -1,11 +1,10 @@
 import re
 import copy
 from fuzzywuzzy import fuzz
-from core.encoders import base64
 from core.config import xsschecker
 from core.requester import requester
 from core.utils import replacer, fillHoles
-from urllib.parse import quote_plus, unquote
+from urllib.parse import unquote
 
 def checker(url, params, headers, GET, delay, payload, positions, timeout, encoding):
     checkString = 'st4r7s' + payload + '3nd'
@@ -40,4 +39,4 @@ def checker(url, params, headers, GET, delay, payload, positions, timeout, encod
         else:
             efficiencies.append(0)
         num += 1
-    return list(filter(None, efficiencies))
+    return list(filter(None, efficiencies))

core/filterChecker.py

@@ -1,7 +1,4 @@
-from core.utils import replacer
 from core.checker import checker
-from core.config import xsschecker
-from core.requester import requester
 
 def filterChecker(url, params, headers, GET, delay, occurences, timeout, encoding):
     positions = {}
@@ -37,4 +34,4 @@ def filterChecker(url, params, headers, GET, delay, occurences, timeout, encodin
                 sortedEfficiencies[i][environment] = efficiency
     for efficiency, occurence in zip(sortedEfficiencies.values(), occurences.values()):
         occurence['score'] = efficiency
-    return occurences
+    return occurences

core/fuzzer.py

@@ -1,12 +1,11 @@
 import copy
-import requests
 from time import sleep
 from random import randint
 from core.utils import replacer
 from core.requester import requester
 from core.config import fuzzes, xsschecker
-from urllib.parse import quote_plus, unquote
-from core.colors import end, red, white, green, yellow, run, bad, good, info, que
+from urllib.parse import unquote
+from core.colors import end, red, green, yellow, bad, good, info
 
 def counter(string):
     special = '\'"=/:*&)(}{][><'

core/htmlParser.py

@@ -1,6 +1,5 @@
 import re
 from core.config import badTags
-from core.encoders import base64
 from core.config import xsschecker
 
 def htmlParser(response, encoding):