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check_file.py
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check_file.py
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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
line = f.read()
print(line)
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()