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Crawler.py
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Crawler.py
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import Queue
import time
import json
import networkx as nx
import matplotlib.pyplot as plt
from urlparse import urlparse
from GetClickables import getLinks, frameExists, getSubmitButtons,GetClickables
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.alert import Alert
from State import StateMachine, NodeData
from DomComparator import getDomDiff
from FormExtractor import getSubmitButtonNumber, fillFormValues
from logger import LoggerHandler, printRequest,clearContent
logger = LoggerHandler(__name__)
def initState(domString, link, title, driver, globalVariables,depth,start_url,login_header):
'''
Initialize the State Machine adding a StateNode to fsm
'''
fsm = StateMachine()
fsm.addHeaders(start_url, login_header)
node = NodeData()
node.link = link
node.domString = domString
node.title = title
node.visited = 0
node.clickables = GetClickables(domString)
for item in node.clickables:
print item.xpath
node.backtrackPath.append(link)
fsm.addNode(0, node)
driver.save_screenshot("snaps/" + str(0) + ".png")
if frameExists(node.domString):
logger.info("Crawling Frames")
crawlFrame(0, fsm, driver, globalVariables)
else:
Crawl(0, fsm, driver, globalVariables, depth+1)
#clickables = graph.node[curNode]['nodedata'].clickables
logger.info("THE END")
fsm.pathSourcetoSink()
#print fsm.graph.edge
drawGraph(fsm)
def drawGraph(fsm):
graph = fsm.graph
printEdges(graph)
printNodes(graph)
returnJsonGraph(graph)
print fsm.doBacktrack
print "------------------------------------------------------"
logger.info("Number of Node Found %s" % (fsm.numberOfNodes()))
print "------------------------------------------------------"
pos = nx.spring_layout(graph)
labels = {k: str(k) for k in graph.nodes()}
#labels = {k: graph.node[k]['nodedata'].title for k in graph.nodes()}
nx.draw_networkx_nodes(graph, pos)
nx.draw_networkx_edges(graph, pos)
nx.draw_networkx_labels(graph, pos, labels)
#nx.draw_networkx_labels( graph ,pos, labels)
#nx.draw(graph,node_size=3000,nodelist=graph.nodes(),node_color='b')
#plt.show()
def backtrack(driver, fsm, node, formValues, tillEnd):
logger.info("Doing backtrack")
#driver.back()
'''
if fsm.doBacktrack == False:
driver.back()
else:
'''
graph = fsm.graph
path = graph.node[node]['nodedata'].backtrackPath
driver.get(path[0])
'''
for i in range(1,len(path)):
print path[i].tag, path[i].attr, path[i].attrVal
'''
for i in range(1, len(path)-1+tillEnd):
'''
if i==1:
driver.switch_to.parent_frame()
driver.switch_to.frame(driver.find_element_by_name("menu"))
'''
time.sleep(0.5)
fillFormValues(formValues, driver)
time.sleep(0.5)
#action, target= path[i].split(":")
'''
if tag == "a":
driver.find_element_by_xpath("//"+tag+"[@"+attr+"='" + attrVal + "']").click()
elif tag == "input":
element = driver.find_element_by_xpath("(//"+tag+"[@"+attr+"='"+attrVal+"'])[" + str(tagNumber) + "]")
element.click()
'''
driver.find_element_by_xpath(path[i].xpath).click()
'''
if i==1:
driver.switch_to.parent_frame()
driver.switch_to.frame(driver.find_element_by_name("body"))
time.sleep(1.0)
'''
clearContent()
def AcceptAlert(driver):
try:
Alert(driver).accept()
except Exception as e:
logger.info("No Alert Box Found")
def crawlFrame(curNode, fsm, driver, globalVariables):
menuFrame = "menu"
bodyFrame = "body"
graph = fsm.graph
driver.switch_to.frame(driver.find_element_by_name(bodyFrame))
graph.node[curNode]['nodedata'].domString = driver.page_source
driver.switch_to.parent_frame()
driver.switch_to.frame(driver.find_element_by_name(menuFrame))
graph.node[curNode]['nodedata'].clickables = getLinks(driver.page_source)
clickables = graph.node[curNode]['nodedata'].clickables
for entity in clickables:
tag = entity.tag
attr = entity.attr
attrVal = entity.attrVal
if checkForBannedUrls(
attrVal,
globalVariables,
graph.node[curNode]['nodedata'].link):
continue
if fsm.checkStateUrlExist(globalVariables.baseAddress+attrVal):
continue
logger.info("Trying to click"+attrVal)
driver.find_element_by_xpath(
"//"+tag+"[@"+attr+"='" + attrVal + "']").click()
AcceptAlert(driver)
time.sleep(2)
driver.switch_to.parent_frame()
driver.switch_to.frame(driver.find_element_by_name(bodyFrame))
# code for crawling the body
newNode = CreateNode(driver)
# add the Node checking if the node already exists
nodeNumber = addGraphNode(newNode,curNode,driver,fsm,entity)
if nodeNumber != -1:
Crawl(nodeNumber, fsm, driver, globalVariables)
else:
logger.info("going back frame")
driver.back()
#backtrack(driver,fsm,curNode,globalVariables.form FieldValues, 1)
driver.switch_to.parent_frame()
#print driver.page_source
driver.switch_to.frame(driver.find_element_by_name(menuFrame))
#driver.back()
#print clickableType, clickable
def Crawl(curNode, fsm, driver, globalVariables, depth):
'''
Crawls the Application by doing the Breadth First Search
over the State Nodes.
'''
#print globalVariables.depth
if depth > globalVariables.depth:
logger.info("depth exceeded")
#driver.back()
backtrack(driver,fsm,curNode,globalVariables.formFieldValues, 0)
return
logger.info("crawling in normal mode")
graph = fsm.graph
graph.node[curNode]['nodedata'].visited = 1
clickables = []
clickables = graph.node[curNode]['nodedata'].clickables
#print driver.page_source
#print clickables
domString = graph.node[curNode]['nodedata'].domString
logger.info("Clicking All Clickables to get a New State")
for entity in clickables:
if entity.tag == "a" and entity.attrs.has_key('href'):
if checkForBannedUrls(
entity.attrs,
globalVariables,
graph.node[curNode]['nodedata'].link):
continue
if fsm.checkStateUrlExist(globalVariables.baseAddress+entity.attrs['href']):
continue
logger.info("Trying to click the element"+entity.xpath)
time.sleep(1.5)
fillFormValues(globalVariables.formFieldValues, driver)
time.sleep(1.5)
try:
driver.find_element_by_xpath(entity.xpath).click()
except Exception as e:
print e
AcceptAlert(driver)
time.sleep(1)
# make a new node add in the graph and the queue
newNode = CreateNode(driver)
# add the Node checking if the node already exists
nodeNumber = addGraphNode(newNode,curNode,driver,fsm,entity)
if nodeNumber != -1:
Crawl(nodeNumber, fsm, driver, globalVariables, depth+1)
else:
logger.info("going back click")
backtrack(driver,fsm,curNode,globalVariables.formFieldValues, 1)
#submitButtons = getSubmitButtons(domString)
#submitButtonNumber = getSubmitButtonNumber(domString, driver)
#time.sleep(2.0)
#fillFormValues(globalVariables.formFieldValues, driver)
#time.sleep(2.0)
'''
logger.info("Initiating Crawling Submit Button")
for entity in submitButtons:
tag = entity.tag
attr = entity.attr
attrVal = entity.attrVal
tagNumber = entity.tagNumber
logger.info("clicking %d submit button" % (tagNumber))
print tag
print attr
print attrVal
print tagNumber
element = driver.find_element_by_xpath(
"(//"+tag+"[@"+attr+"='"+attrVal+"'])[" + str(tagNumber+1) + "]")
element.click()
AcceptAlert(driver)
time.sleep(0.5)
newNode = CreateNode(driver)
nodeNumber = addGraphNode(newNode,curNode,driver,fsm,entity)
if nodeNumber != -1:
Crawl(nodeNumber, fsm, driver, globalVariables, depth+1)
else:
logger.info("going back submit")
backtrack(driver,fsm,curNode,globalVariables.formFieldValues, 1)
WebDriverWait(driver, 2000)
'''
WebDriverWait(driver, 2000);
backtrack(driver,fsm,curNode,globalVariables.formFieldValues,0)
#print driver.page_source
def checkForBannedUrls(attrs, globalVariables, currentPath):
clickable = attrs['href']
if clickable.find("http") != -1:
logger.info(str(clickable) + "is a absolute link")
path = clickable
else:
index = currentPath.rfind("/")
path = currentPath[0:index] + "/" + clickable
scopeUrls = globalVariables.scopeUrls
baseAddress = globalVariables.baseAddress
bannedUrls= globalVariables.bannedUrls
flag = 0
parsed = urlparse(clickable)
if not parsed.hostname:
combinedUrl = baseAddress+parsed.path
else:
combinedUrl = parsed.hostname+parsed.path
for item in scopeUrls:
if item in combinedUrl:
flag = 1
break
if flag == 0:
logger.info("Exist in Banned Url " + clickable)
return True
if clickable in bannedUrls:
logger.info("Exist in Banned Url " + clickable)
return True
else:
for key,value in bannedUrls.iteritems():
if attrs.has_key(key) and attrs[key]==value:
logger.info("Exist in Banned Url " + value)
return True
logger.info("Path doesn't exist in Banned Url")
return False
def printNodes(graph):
print "----------------------Nodes---------------------"
numberofnodes = graph.number_of_nodes()
for i in range(numberofnodes):
print i ,printBackTrackPath(graph.node[i]['nodedata'].backtrackPath)
print "------------------------------------------------"
def printBackTrackPath(path):
for entity in path:
print entity,
def printEdges(graph):
print "----------------------Edges----------------------"
edges = graph.edges()
numEdges = len(edges)
for i in range(numEdges):
source = edges[i][0]
dest = edges[i][1]
print edges[i], graph.edge[source][dest][0]["event"].xpath,graph.edge[source][dest][0]["header"]
print "-------------------------------------------------"
def returnJsonGraph(graph):
graphData = {}
graphData["nodes"] = []
graphData["links"] = []
numberofnodes = graph.number_of_nodes()
for i in range(numberofnodes):
newNodeDict = {}
newNodeDict["name"] = i
newNodeDict["group"] = 1
graphData["nodes"].append(newNodeDict)
edges = graph.edges()
numEdges = len(edges)
for i in range(numEdges):
source = edges[i][0]
dest = edges[i][1]
newLinkDict = {
"source": source,
"target": dest,
"value": 50
}
graphData["links"].append(newLinkDict)
#print json.dumps(graphData)
def CreateNode(driver):
'''
Creates a New State Node assigning the NodeData Properties
'''
newNode = NodeData()
newNode.link = driver.current_url
newNode.domString = driver.page_source
newNode.visited = 0
newNode.title = driver.title
logger.info("Creating a new node with title %s" % (newNode.title))
return newNode
def addGraphNode(newNode, curNode, driver, fsm, entity):
'''
Adding a Node to the Finite State Machine
Checking if the Dom Tree Does Not Exist Already
'''
graph = fsm.graph
curNodeUrl = graph.node[curNode]['nodedata'].link
newNodeUrl = driver.current_url
if curNodeUrl == newNodeUrl:
logger.debug("found the same url %s %d" % (curNodeUrl, curNode))
fsm.doBacktrack = True
for item in graph.node[curNode]['nodedata'].backtrackPath:
newNode.backtrackPath.append(item)
newNode.backtrackPath.append(entity)
existNodeNumber = fsm.checkNodeExists(newNode.domString)
if existNodeNumber == -1:
header = printRequest()
print "========================="
print header
print "========================="
nodeNumber = fsm.numberOfNodes()
newNode.insertedDom = getDomDiff(graph.node[curNode]['nodedata'].domString,newNode.domString)
newNode.clickables = GetClickables(newNode.insertedDom)
#print newNode.insertedDom
#write code here
fsm.addNode(nodeNumber, newNode)
logger.info("Adding a New Node %d to Graph" % (nodeNumber))
fsm.addEdges(curNode, nodeNumber, entity, header)
logger.info(
"Adding a Edge from Node %d and %d" %
(curNode, nodeNumber))
print nodeNumber, newNode.clickables
time.sleep(1.5)
driver.save_screenshot("snaps/" + str(nodeNumber) + ".png")
return nodeNumber
#queue.put(nodeNumber)
else:
logger.info("Dom Tree Already Exist")
#driver.save_screenshot("snaps/" + str(existNodeNumber) + ".png")
fsm.addEdges(curNode, existNodeNumber, entity)
return -1
#WebDriverWait(driver, 2000)
#driver.back()