Web Crawler
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Some time ago I wrote a tool named web-map.
You can found it on my github :)
Is a quite basic tool…
Human Stupidity , thats why Hackers always win.
? Med Amine Khelifi
this python script works pretty well
! /usr/bin/env python
Copyright © 2009 Veronica Valeros
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Author:
Veronica Valeros vero.valeros@gmail.com
Changelog
- Implemented a depth limit in crawling logic.
- Added summary at the end of crawling with statistical data about the crawling results
- Incresed crawl speed.
- Implemented HEAD method for analysing file types before crawling.
- Almost all from the last published version!
ToDo
- [!] Exception inside crawl() function. While statement rise the exception.
…
IncompleteRead(2020 bytes read, 4429 more expected)
standar imports
import sys
import re
import getopt
import urllib2
import urlparse
import httplib
import copy
import os
import time
import socket
import datetime
import getpass
##############
Global Variables
debug=False
vernum=‘1.0.1’
verbose=False
log=False
auth=False
time_responses = []
This is for identify links in a HTTP answer
linkregex = re.compile(‘^>\‘|\“[\’|\“]‘,re.IGNORECASE)
linkregex = re.compile(‘^>\‘|\“[\’|\“].?>‘,re.IGNORECASE)
linkredirect = re.compile(’(?:open\(\”|url=|URL=|location=\‘|src=\“|href=\”)(.?)[\’|\“]‘)
linksrobots = re.compile(’(?:Allow:|Disallow:|sitemap:).‘,re.IGNORECASE)
information_disclosure = re.compile(’(?:
HTTP Response Codes
——————-
error_codes={}
error_codes[‘0’]=‘Keyboard Interrupt exception’
error_codes[‘1’]=‘Skypping url’
error_codes[‘-2’]=‘Name or service not known’
error_codes[‘22’]=‘22 Unknown error’
error_codes[‘104’]=‘104 Connection reset by peer’
error_codes[‘110’]=‘110 Connection timed out’
error_codes[‘111’]=‘111 Connection refused’
error_codes[‘200’]=‘200 OK’
error_codes[‘300’]=‘300 Multiple Choices’
error_codes[‘301’]=‘301 Moved Permanently’
error_codes[‘302’]=‘Moved’
error_codes[‘305’]=‘305 Use Proxy’
error_codes[‘307’]=‘307 Temporary Redirect’
error_codes[‘400’]=‘400 Bad Request’
error_codes[‘401’]=‘401 Unauthorized’
error_codes[‘403’]=‘403 Forbidden’
error_codes[‘404’]=‘404 Not Found’
error_codes[‘405’]=‘405 Method Not Allowed’
error_codes[‘407’]=‘407 Proxy Authentication Required’
error_codes[‘408’]=‘408 Request Timeout’
error_codes[‘500’]=‘500 Internal Server Error’
error_codes[‘503’]=‘503 Service Unavailable’
error_codes[‘504’]=‘504 Gateway Timeout’
error_codes[‘505’]=‘505 HTTP Version Not Supported’
error_codes[‘9999’]=‘Server responds with a HTTP status code that we do not understand’
End of global variables
#####################
Print version information and exit
def version():
“”“
This function prints the version of this program. It doesn’t allow any argument.
”“”
print “+———————————————————————-+”
print “| ”+ sys.argv[0] + “ Version ”+ vernum +“ |”
print “| This program is free software; you can redistribute it and/or modify |”
print “| it under the terms of the GNU General Public License as published by |”
print “| the Free Software Foundation; either version 2 of the License, or |”
print “| (at your option) any later version. |”
print “| |”
print “| Author: Veronica Valeros, vero.valeros@gmail.com |”
print “+———————————————————————-+”
print
Print help information and exit:
def usage():
“”“
This function prints the posible options of this program.
No parameters are needed.
"""
print "+----------------------------------------------------------------------+"
print "| "+ sys.argv[0] + " Version "+ vernum +" |"
print "| This program is free software; you can redistribute it and/or modify |"
print "| it under the terms of the GNU General Public License as published by |"
print "| the Free Software Foundation; either version 2 of the License, or |"
print "| (at your option) any later version. |"
print "| |"
print "| Author: Veronica Valeros, vero.valeros@gmail.com |"
print "+----------------------------------------------------------------------+"
print
print "\nUsage: %s <options>" % sys.argv[0]
print "Options:"
print " -h, --help Show this help message and exit"
print " -V, --version Output version information and exit"
print " -v, --verbose Be verbose"
print " -D, --debug Debug"
print " -u, --url URL to start crawling"
print " -w, --write Save crawl output to a local file"
print " -L, --common-log-format Generate log of the requests in CLF"
print " -e, --export-file-list Creates a file with all the URLs to found files during crawling. You can use wget to download the entire list"
print " -l, --crawl-limit Maximum links to crawl"
print " -C, --crawl-depth Limit the crawling depth according to the value specified. Ex.: -C 2. "
print " -d, --download-file Specify the file type of the files to download: png,pdf,jpeg,gif,css,x-javascript,x-shockwave-flash"
print " -i, --interactive-download Before downloading files allow user to specify manually the type of files to download"
print " -U, --usuario User name for authentication"
print " -P, --password Request password for authentication"
print
print "Example: python crawler.py -u http://www.example.com -w -C 10 -i "
print
sys.exit(1)
def printout(input_text,output_file):
"""
To main functionalities are covered in this function:
1. Prints a text in the stdout
2. Write a text in the given file.
Not return any value.
"""
global debug
global verbose
try:
print input_text
if output_file:
try:
output_file.write(input_text+'\n')
except:
print '[!] Not saving data in output'
except Exception as inst:
print '[!] Exception in printout() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
def check_url(url):
"""
This function verifies that the given 'url' is well formatted, this means that it has defined a protocol and a domain.
The urlparse.urlparse() function is used.
The return values can be 'True'/'False'.
"""
global debug
global verbose
try:
url_parsed = urlparse.urlparse(url)
if url_parsed.scheme and url_parsed.netloc:
return True
else:
return False
except Exception as inst:
print '[!] Exception in check_url() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
def encode_url(url):
"""
This function encode the URL according to Percentage or URL encoding.
Actually only replaces a 'space' to '%20'.
Returns an URL.
"""
global debug
global verbose
url_encoded = ""
try:
url_encoded = url.replace(" ","%20")
#url_encoded = url_encoded.replace("&","&")
return url_encoded
except Exception as inst:
print '[!] Exception in encode_url() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
def log_line(request, response_code, response_size,log_file):
"""
This function generates an output line of a given HTTP request in CLF (Common Log Format)
Not return any value.
"""
global debug
global verbose
try:
try:
if response_size == -1:
content_size = '-'
else:
content_size = str(response_size)
local_hostname = socket.gethostname()
local_user = os.getenv('USER')
timestamp = time.strftime('%e/%b/%Y:%X %z').strip()
method = request.get_method()
protocol = 'HTTP/1.1' # This is the version of the protocol that urllib2 uses
user_agent = request.get_header('User-agent')
url = request.get_full_url()
# COMMON LOG FORMAT
log_file.write(local_hostname+' '+'-'+' '+local_user+' '+'['+timestamp+']'+' '+'"'+method+' '+url+' '+protocol+'"'+' '+str(response_code)+' '+content_size+' "-" "'+user_agent+'"\n')
# URLSNARF FORMAT
#log_file.write(local_hostname+' '+'- - '+'['+timestamp+']'+' '+'"'+method+' '+url+' '+protocol+'"'+' - - "-" "'+user_agent+'"\n')
except:
print 'Not logging the following request: {0}'.format(request.get_full_url())
except Exception as inst:
print '[!] Exception in log_line() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
def get_url(url, host, username, password, download_files_flag):
"""
This function does a HTTP request of the given URL using the urllib2 python library.
Returns two values: [request,response]
"""
global debug
global verbose
global auth
#Vector to save time responses of each request. For now it is a global variable.
global time_responses
starttime=0
endtime=0
handler=""
try:
try:
starttime= time.time()
url = encode_url(url)
if debug:
print 'Encoded URL: '+url
request = urllib2.Request(url)
request.add_header('User-Agent','Mozilla/4.0 (compatible;MSIE 5.5; Windows NT 5.0)')
if auth:
password_manager = urllib2.HTTPPasswordMgrWithDefaultRealm()
password_manager.add_password(None, host, username, password)
handler = urllib2.HTTPBasicAuthHandler(password_manager)
if not download_files_flag:
#First we do a head request to see the type of url we are going to crawl
request.get_method = lambda : 'HEAD'
if handler:
opener_web = urllib2.build_opener(handler)
else:
opener_web = urllib2.build_opener()
response = opener_web.open(request)
# If it is a file, we don get the content
if 'text/html' not in response.headers.typeheader:
opener_web.close()
endtime= time.time()
time_responses.append(endtime-starttime)
return [request,response]
request.get_method = lambda : 'GET'
if handler:
opener_web = urllib2.build_opener(handler)
else:
opener_web = urllib2.build_opener()
response = opener_web.open(request)
opener_web.close()
endtime= time.time()
time_responses.append(endtime-starttime)
return [request,response]
except urllib2.HTTPError,error_code:
return [request,error_code.getcode()]
except urllib2.URLError,error_code:
error = error_code.args[0]
return [request,error[0]]
except socket.error,error_code:
error = error_code.args[0]
try:
error = error[0]
except:
pass
return [request,error]
except KeyboardInterrupt:
try:
print '\t[!] Press a key to continue'
raw_input()
return ["",1]
except KeyboardInterrupt:
return ["",0]
except Exception as inst:
print '[!] Exception in get_url() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
def get_links(link_host, link_path, content):
"""
This function uses a regular expresion to find links in a HTML source page.
The regular expresion used is defined in the 'linkregex' variable.
Returns a vector of extracted links
"""
global debug
global verbose
global linkregex
try:
# We obtain the links in the given response
links = linkregex.findall(content)
# We analyze each link
for link in links:
try:
link_clean = link.strip(' ')
except:
print 'error'
parsed_link = urlparse.urlparse(link_clean)
if not parsed_link.scheme and not parsed_link.netloc:
if link_clean.startswith('/'):
if link_host.endswith('/'):
links[links.index(link)] = link_host.rstrip('/')+link_clean
else:
links[links.index(link)] = link_host+link_clean
elif link_clean.startswith('./'):
links[links.index(link)] = link_host+link_clean
else:
links[links.index(link)] = link_path+link_clean
else:
links[links.index(link)] = link_clean
for link in links:
links[links.index(link)] = link.split('#')[0]
return links
except Exception as inst:
print '[!] Exception in get_links() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
def crawl(url,usuario,password,output_filename,crawl_limit=0,log=False,log_filename=‘none’,crawl_depth=0):
"""
Crawl a given url using a breadth first exploration.
The function returns the following values: [links_crawled, urls_not_crawled, links_to_files]
"""
global debug
global verbose
global error_codes
# Vector that stores the remaining URLs to crawl
urls_to_crawl = []
urls_not_crawled = []
links_crawled = []
links_extracted = []
files=[]
crawl_limit_flag=False
urls_to_crawl.append(url)
if (crawl_limit>0):
crawl_limit_flag=True
if crawl_depth > 0:
crawl_depth = crawl_depth + 3
try:
printout('[+] Site to crawl: '+url,output_filename)
printout('[+] Start time: '+str(datetime.datetime.today()),output_filename)
if output_filename:
printout('[+] Output file: '+output_filename.name,output_filename)
if log:
printout('[+] Common log format output: '+log_filename.name,output_filename)
printout('',output_filename)
printout('[+] Crawling',output_filename)
while urls_to_crawl:
if crawl_limit_flag:
if (len(links_crawled) >= crawl_limit):
break
try:
# We extract the next url to crawl
url = urls_to_crawl[0]
urls_to_crawl.remove(url)
# Here we limit the crawl depth
if crawl_depth > 0:
if url.endswith('/'):
if url.rpartition('/')[0].count('/') >= crawl_depth:
continue
elif url.count('/') >= crawl_depth:
continue
# We add the url to the links crawled
links_crawled.append(url)
# We print the URL that is being crawled
printout(' [-] '+str(url),output_filename)
# We extract the host of the crawled URL
parsed_url = urlparse.urlparse(url)
host = parsed_url.scheme + '://' + parsed_url.netloc
if parsed_url.path.endswith('/'):
link_path = host + parsed_url.path
else:
link_path = host + parsed_url.path.rpartition('/')[0] + '/'
# We obtain the response of the URL
[request,response] = get_url(url,host,usuario, password,False)
# If there is a response
if response:
#If the server didn't return an HTTP Error
if not isinstance(response, int):
content = response.read()
if log:
log_line(request,response.getcode(),len(content),log_filename)
# We print the file type of the crawled page
if response.headers.typeheader:
# If it isn't an HTML file
if 'text/html' not in response.headers.typeheader:
if url not in files:
files.append([url,str(response.headers.typeheader.split('/')[1].split(';')[0])])
if verbose:
printout('\t[-] ('+str(response.getcode())+') '+str(response.headers.typeheader),output_filename)
else:
#if verbose:
# printout('\t[-] ('+str(response.getcode())+') '+str(response.headers.typeheader),output_filename)
links_extracted = get_links(host, link_path, content)
links_extracted.sort()
# We add new links to the list of urls to crawl
for link in links_extracted:
if debug:
print '\t [i] {0}'.format(link)
parsed_link= urlparse.urlparse(link)
link_host = parsed_link.scheme + '://' + parsed_link.netloc
# We just crawl URLs of the same host
if link_host == host:
if link not in links_crawled and link not in urls_to_crawl:
urls_to_crawl.append(link)
elif link not in urls_not_crawled:
urls_not_crawled.append(link)
else:
# We print the error code if neccesary
printout('\t[i] '+error_codes[str(response)],output_filename)
if log:
log_line(request,response,-1,log_filename)
else:
if response==1:
continue
if response==0:
print '[!] Skypping the rest of the urls'
break
except KeyboardInterrupt:
try:
print '[!] Press a key to continue'
raw_input()
continue
except KeyboardInterrupt:
print '[!] Exiting'
break
except Exception as inst:
print '[!] Exception inside crawl() function. While statement rise the exception.'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
print 'Response: {0}'.format(response)
break
printout('[+] Total urls crawled: '+str(len(links_crawled)),output_filename)
printout('',output_filename)
return [links_crawled,urls_not_crawled,files]
except KeyboardInterrupt:
try:
print '[!] Press a key to continue'
raw_input()
return 1
except KeyboardInterrupt:
print '[!] Keyboard interruption. Exiting'
return 1
except Exception as inst:
print '[!] Exception in crawl() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
def external_links(root_url,external_vector,output_filename):
"""
This function detects external links from a lists of given URLs. The links not maching the root URL are considered as external.
Not return any values.
"""
global debug
global verbose
external_websites = []
try:
parsed_url = urlparse.urlparse(root_url)
link_host = parsed_url.scheme + '://' + parsed_url.netloc
domain = parsed_url.netloc.split('www.')[-1]
printout('',output_filename)
printout('[+] Related subdomains found: ',output_filename)
tmp=[]
for link in external_vector:
parsed = urlparse.urlparse(link)
if domain in parsed.netloc:
subdomain = parsed.scheme+'://'+parsed.netloc
if subdomain not in tmp:
tmp.append(subdomain)
printout(' [-] '+subdomain,output_filename)
printout('[+] Total: '+str(len(tmp)),output_filename)
printout('',output_filename)
printout('[+] Email addresses found: ',output_filename)
for link in external_vector:
if 'mailto' in urlparse.urlparse(link).scheme:
printout(' [-] '+link.split(':')[1].split('?')[0],output_filename)
printout('',output_filename)
printout('[+] This website have references to the following websites: ',output_filename)
for link in external_vector:
parsed = urlparse.urlparse(link)
if parsed.netloc:
if domain not in parsed.netloc:
external_domain = parsed.scheme+'://'+parsed.netloc
if external_domain not in external_websites:
external_websites.append(external_domain)
external_websites.sort()
for link in external_websites:
printout(' [-] '+link,output_filename)
printout('[+] Total: '+str(len(external_websites)),output_filename)
except Exception as inst:
print '[!] Exception in external_links() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
def indexing_search(usuario, password,links_vector,output_filename):
"""
This function identifies directories and search for indexing in them from a given list of URLs.
This function returns the following values: [directories found, directories_with_indexing]
"""
global debug
global verbose
global error_codes
directories=[]
indexing=[]
request=""
response=""
title_start_position = -1
title_end_position = -1
title=""
try:
# Identifying directories
for i in links_vector:
while ( len(i.split('/')) > 4 ):
i=i.rpartition('/')[0]
if ( ( i+'/' ) not in directories ):
directories.append(i+'/')
# We sort the directories vector for proper visualization of the data
directories.sort()
printout('[+] Directories found:',output_filename)
for directory in directories:
printout(' [-] '+directory,output_filename)
printout('[+] Total directories: '+str(len(directories)),output_filename)
printout('',output_filename)
printout('[+] Directory with indexing',output_filename)
dots='.'
for directory in directories:
sys.stdout.flush()
sys.stdout.write('\r\x1b'+dots)
if len(dots)>30:
dots='.'
dots=dots+'.'
try:
# We extract the host of the crawled URL
parsed_url = urlparse.urlparse(directory)
host = parsed_url.scheme + '://' + parsed_url.netloc
# We obtain the response of the URL
[request,response] = get_url(directory, host, usuario, password,False)
# If there is a response
if response:
#If the server didn't return an HTTP Error
if not isinstance(response, int):
content = response.read()
title_start_position = content.find('<title>')
if title_start_position != -1:
title_end_position = content.find('</title>', title_start_position+7)
if title_end_position != -1:
title = content[title_start_position+7:title_end_position]
if title:
if title.find('Index of') != -1:
printout('\n [!] '+directory,output_filename)
indexing.append(directory)
elif verbose:
printout(' [-] '+directory,output_filename)
else:
if debug:
# We print the error code if neccesary
printout(' [-] '+directory+' ('+error_codes[str(response)]+')',output_filename)
else:
if response==1:
continue
if response==0:
print '[!] Skypping the rest of the directories'
break
except KeyboardInterrupt:
try:
print '[!] Press a key to continue'
raw_input()
pass
except KeyboardInterrupt:
print '[!] Exiting'
break
printout('\n[+] Total directories with indexing: '+str(len(indexing)),output_filename)
printout('',output_filename)
return [directories,indexing]
except Exception as inst:
print '[!] Exception in indexing_search() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return 1
def report_files(export_file_list,files_vector,output_filename):
"""
This function export in a output file a list of the URLs of the found files during crawling.
"""
global debug
global verbose
try:
if len(files_vector)>0:
printout('[+] Files found:',output_filename)
if export_file_list:
try:
local_file = open(output_name.rpartition('.')[0]+'.files','w')
printout('[+] Exporting list of files found to: '+output_name.rpartition('.')[0]+'.files',output_filename)
except OSError,error:
if 'File exists' in error:
printout('[+] Exporting list of files found to: '+output_name.rpartition('.')[0]+'.files',output_filename)
pass
else:
print '[+] Error creating output file to export list of files.'
export_file_list=False
# We print the files found during the crawling
for [i,j] in files_vector:
printout(' [-] '+str(i)+' ('+str(j)+')',output_filename)
if export_file_list:
local_file.write(i+'\n')
printout('[+] Total files: '+str(len(files_vector)),output_filename)
if export_file_list:
local_file.close()
except Exception as inst:
print '[!] Exception in report_files() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return 1
def download_files(extensions_to_download,files_vector,usuario,password,interactive_flag,output_filename):
"""
This function downloads a set of files which extensions match with the given in extensions_to_download.
If the interactive_flag is set on True, then the user can select manually the files to download choosing from the files
extensions found during crawling.
This function returns a list of extensions in the found files during crawling.
"""
global debug
global verbose
list_of_files_to_download=[]
extensions_found=[]
try:
if len(files_vector)>0:
# Looking for the types of files found during crawling
for [i,j] in files_vector:
if j not in extensions_found:
extensions_found.append( j )
#If the interactive mode is enabled, we ask user which files to downlaod
if interactive_flag:
print
print '[+] Starting to download files'
print '[+] The following files were found during crawling:'
print ' ',
print extensions_found
print ' Select next wich type of files you want to download. Ex.: png,pdf,css.'
extensions_to_download= raw_input(' ')
# Looking for files matching the download criteria
for [i,j] in files_vector:
if (j in extensions_to_download):
list_of_files_to_download.append(i)
# If there is at least one file matching the download criteria, we create a output directory and download them
if ( len(list_of_files_to_download) > 0 ):
# Fetching found files
printout('',output_filename)
printout('[+] Downloading specified files: '+extensions_to_download,output_filename)
printout('[+] Total files to download: '+str(len(list_of_files_to_download)),output_filename)
# Creating output directory download files
try:
output_directory = output_name.rpartition('.')[0]+'_files'
os.mkdir(output_directory)
printout('[+] Output directory: '+output_directory,output_filename)
except OSError, error:
if 'File exists' in error:
print '\n[!] Directory already exists. Press a key to ovewrite or CTRL+C cancel download'
try:
raw_input()
printout('[+] Output directory: '+output_directory,output_filename)
except KeyboardInterrupt:
printout('\n[+] Download files aborted',output_filename)
return 1
else:
printout('\n[!] Download files aborted. Error while creating output directory.',output_filename)
#Downloading files
for i in list_of_files_to_download:
printout(' [-] '+i,output_filename)
# We extract the host of the crawled URL
parsed_url = urlparse.urlparse(i)
host = parsed_url.scheme + '://' + parsed_url.netloc
[request,response] = get_url(i.replace(' ','%20'), host, usuario, password, True)
if response:
if not isinstance(response, int):
response = response.read()
try:
local_file=open(output_directory+'/'+i.rpartition('/')[2],'w')
except OSError, error:
if 'File exists' in error:
pass
else:
printout(' [-] Impossible to create output file for: '+output_directory+'/'+i.rpartition('/')[2],output_filename)
if local_file:
local_file.write(response)
local_file.close()
printout('[+] Download complete',output_filename)
printout('',output_filename)
return extensions_found
except Exception as inst:
print '[!] Exception in download_files() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
##############
STATISTICS FUNCTION
##############
def statistics(global_time, directories, indexing, links_crawled, files, extensions_found, output_filename):
global debug
global verbose
global time_responses
queries_time = 0
avg_time_per_query = 0
amt_files_per_extension = {}
try:
print
if len(links_crawled) > 1:
# Calculating avg time per query
for i in time_responses:
queries_time = queries_time + i
try:
avg_time_per_query = (queries_time / len(time_responses))
except:
avg_time_per_query = 0
# Calculating incidence of files
for [link,extension] in files:
amt_files_per_extension[extension] = 0
for [link,extension] in files:
amt_files_per_extension[extension] += 1
print '___________'
print
print 'Summary'
print '___________'
print
if output_filename:
print '[+] Output file stored at: {0}'.format(os.path.realpath(output_name))
print
print '[+] Total elapsed time: {0} seconds ({1} min)'.format(round(global_time,2),round((global_time/60),2))
print '[+] AVG time per query: {0} seconds'.format(round(avg_time_per_query,2))
print
print '[+] Total links crawled\t{0}'.format(str(len(links_crawled)-len(files)))
print '[+] Total directories\t{0}'.format(str(len(directories)))
print ' [-] Indexing\t{0}'.format(str(len(indexing)))
print '[+] Total found files\t{0}'.format(str(len(files)))
for key in amt_files_per_extension.keys():
print ' | '+key+'\t'+str(amt_files_per_extension[key])
except Exception as inst:
print '[!] Exception in statistics() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
return -1
####
MAIN
####
def main():
global debug
global verbose
global log
global auth
global output
global output_name
url_to_crawl = ""
usuario = "crawler123"
password = "crawler123"
crawl_limit = 0
extensions_to_download = ""
download_files_flag=False
export_file_list = False
interactive_flag=False
starttime=0
endtime=0
#Data lists
directories = []
indexing = []
links_crawled = []
externals_url_vector = []
files_vector = []
extensions_found = []
crawl_depth = 0
save_output=False
output_name = ""
output_file = ""
log_name = ""
log_file = ""
try:
# By default we crawl a max of 5000 distinct URLs
opts, args = getopt.getopt(sys.argv[1:], "hVDwu:vLU:Pl:[d:]eiC:", ["help","version","debug","write","url=","verbose","common-log-format","usuario=","password","crawl-limit=","[download-file=]","export-file-list","interactive-download","crawl-depth="])
except getopt.GetoptError: usage()
for opt, arg in opts:
if opt in ("-h", "--help"): usage()
if opt in ("-V", "--version"): version();exit(1)
if opt in ("-D", "--debug"): debug=True
if opt in ("-w", "--write"): save_output=True
if opt in ("-u", "--url"): url_to_crawl = arg
if opt in ("-v", "--verbose"): verbose = True
if opt in ("-L", "--common-log-format"): log = True
if opt in ("-U", "--usuario"): usuario = arg
if opt in ("-P", "--password"): password = getpass.getpass() ; auth = True
if opt in ("-l", "--crawl-limit"): crawl_limit = int(arg)
if opt in ("-d", "--download-file"): extensions_to_download = arg ; download_files_flag=True
if opt in ("-i", "--interactive-download"): interactive_flag=True
if opt in ("-e", "--export-file-list"): export_file_list = True
if opt in ("-C", "--crawl-depth"): crawl_depth = arg
try:
if debug:
print '[+] Debugging mode enabled'
if check_url(url_to_crawl):
date = str(datetime.datetime.today()).rpartition('.')[0].replace('-','').replace(' ','_').replace(':','')
if save_output:
output_name = urlparse.urlparse(url_to_crawl).netloc+'.crawler'
try:
output_file = open(output_name,'w')
except OSError, error:
if 'File exists' in error:
pass
else:
output_name = ""
else:
output_name = ""
if log:
log_name = date +'_'+ urlparse.urlparse(url_to_crawl).netloc + '.log'
try:
log_file = open(log_name,'w')
except OSError, error:
if 'File exists' in error:
pass
else:
log=False
starttime=time.time()
# Crawl function
[links_crawled,externals_url_vector, files_vector] = crawl(url_to_crawl, usuario, password, output_file, crawl_limit, log,log_file,int(crawl_depth))
# Indexing search
[directories, indexing] = indexing_search(usuario, password,links_crawled,output_file)
# Printing found files and exporting files to an output file
report_files(export_file_list,files_vector,output_file)
# Searching for external links
external_links(url_to_crawl,externals_url_vector,output_file)
# Download files
if download_files_flag or interactive_flag:
extensions_found = download_files(extensions_to_download,files_vector,usuario,password,interactive_flag,output_file)
printout('',output_file)
printout('[+] End time: '+str(datetime.datetime.today()),output_file)
endtime=time.time()
# Printing statistics
statistics(endtime-starttime,directories,indexing,links_crawled,files_vector,extensions_found,output_name)
try:
output_file.close()
except:
pass
try:
log_file.close()
except:
pass
else:
print
print '[!] Check the URL provided, it should be like: http://www.example.com or http://asdf.com'
print
usage()
except KeyboardInterrupt:
# CTRL-C pretty handling
print 'Keyboard Interruption!. Exiting.'
sys.exit(1)
except Exception as inst:
print '[!] Exception in main() function'
print type(inst) # the exception instance
print inst.args # arguments stored in .args
print inst # __str__ allows args to printed directly
x, y = inst # __getitem__ allows args to be unpacked directly
print 'x =', x
print 'y =', y
sys.exit(1)
if name == ‘main’:
main()
@xany Thanks for sharing, you can put your code into code marks so it’s much more readable.
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