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# Script Name : check_file.py

# Author : Craig Richards

# Created : 20 May 2013

# Last Modified :

# Version : 1.0

# Modifications : with statement added to ensure correct file closure

# Description : Check a file exists and that we can read the file

from __future__ import print_function

import sys # Import the Modules

import os # Import the Modules

# Prints usage if not appropriate length of arguments are provided

def usage():

print('[-] Usage: python check_file.py <filename1> [filename2] ... [filenameN]')

exit(0)

# Readfile Functions which open the file that is passed to the script

def readfile(filename):

with open(filename, 'r') as f: # Ensure file is correctly closed under all circumstances

file = f.read()

print(file)

def main():

if len(sys.argv) >= 2: # Check the arguments passed to the script

filenames = sys.argv[1:]

for filename in filenames: # Iterate for each filename passed in command line argument

if not os.path.isfile(filename): # Check the File exists

print ('[-] ' + filename + ' does not exist.')

filenames.remove(filename) #remove non existing files from filenames list

continue

if not os.access(filename, os.R_OK): # Check you can read the file

print ('[-] ' + filename + ' access denied')

filenames.remove(filename) # remove non readable filenames

continue

else:

usage() # Print usage if not all parameters passed/Checked

# Read the content of each file

for filename in filenames:

print ('[+] Reading from : ' + filename) # Display Message and read the file contents

readfile(filename)

if __name__ == '__main__':

main()