OPS435 Assignment 1 A

Assignment 1 - Usage Report

Weight: 15% of the overall grade

Due Date: Ask your professor for exact date

Late Penalty: 10% per school day, and note that this assignment must be completed satisfactorily in order to pass the course even if you get zero mark for this assignment.

Overview

Most system administrators would like to know the utilization of their systems by their users. On a Linux system, each user's login records are normally stored in the binary file /var/log/wtmp. The login record in this binary file can not be viewed or edited directly using normal Linux text commands like 'less', 'cat', etc. The 'last' command is often used to display the login records stored in this file in a human readable form. Please check the man page of the 'last' command for available options. The following listing is a sample output of the 'last' command with the '-F' flag on:

$ last -F
avhuo    pts/9        10.43.222.35     Tue Feb 13 16:53:42 2018 - Tue Feb 13 16:57:02 2018  (00:03)    
clee18   pts/6        10.40.43.94      Tue Feb 13 16:51:47 2018 - Tue Feb 13 16:56:13 2018  (00:04)    
clee18   pts/6        10.40.43.94      Tue Feb 13 16:50:20 2018 - Tue Feb 13 16:51:27 2018  (00:01)    
shana    pts/2        toroon4512w-lp13 Tue Feb 13 16:47:48 2018 - Tue Feb 13 16:58:31 2018  (00:10)    
hfang171 pts/4        24.114.50.50     Tue Feb 13 16:31:38 2018 - Tue Feb 13 17:48:39 2018  (01:17)    
bigia    pts/8        10.247.6.126     Tue Feb 13 16:28:43 2018 - Tue Feb 13 17:28:31 2018  (00:59)    
ckim16   pts/2        10.40.91.236     Tue Feb 13 16:22:36 2018 - Tue Feb 13 16:45:10 2018  (00:22)    
ddchan   pts/2        10.43.115.162    Tue Feb 13 16:19:29 2018 - Tue Feb 13 16:22:00 2018  (00:02)    
tsliu2   pts/4        10.40.105.130    Tue Feb 13 16:17:21 2018 - Tue Feb 13 16:30:10 2018  (00:12)    
shana    pts/13       10.40.91.247     Tue Feb 13 16:07:52 2018 - Tue Feb 13 16:45:52 2018  (00:38)    
tchiu2   pts/11       10.40.105.130    Tue Feb 13 16:07:43 2018 - Tue Feb 13 16:17:12 2018  (00:09)    
   
...

In this assignment, your task is to create a python program to produce daily, weekly, and monthly usage reports by user or by remote host based on the information obtained from the 'last' command or given files which contain similar information as the 'last' command.

Resource for useful modules

• the argparse module
  • Argparse Tutorial - should read this first.
  • Argparse API reference information page
• the time module
  • Time module Tutorial
  • Time module API reference page

Instructions

Program Name and valid command line arguments

Name your Python3 program as ur.py. The program should accept one or more "file name" as its command line parameters and other optional parameters as shown below. Your ur.py script should produce the following usage when run with the --help option:

[rchan@centos7 a1]$ python3 ./ur.py -h
usage: ur.py [-h] [-l {user,host}] [-r RHOST] [-t {daily,weekly,monthly}]
             [-u USER] [-v]
             F [F ...]

Usage Report based on the last command

positional arguments:
  F                     list of files to be processed

optional arguments:
  -h, --help            show this help message and exit
  -l {user,host}, --list {user,host}
                        generate user name or remote host IP from the given
                        files
  -r RHOST, --rhost RHOST
                        usage report for the given remote host IP
  -t {daily,weekly,monthly}, --type {daily,weekly,monthly}
                        type of report: daily, weekly, and monthly
  -u USER, --user USER  usage report for the given user name
  -v, --verbose         tune on output verbosity

Copyright 2018 - Raymond Chan 

Replace the last line with your own full name

If one of the file name given is "last", your python program should get the login records from the 'last' command with the appropriate flags.

If there is one file name provided at the command line, read the login records from the contents of the given file. The format of each line in the file should be the same as the output of 'last -Fiw'.

If there is more than one file name provided, merges all the files together with the first one at the top and the last one at the bottom. Read and process the file contents in that order in your program.

Header

All your Python codes for this program must be placed in a single source file. Please include the following declaration by you as comment in your Python source code file (replace "Student Name" with your own name):

OPS435 Assignment 1 - Summer 2018
Program: ur.py
Author: "Student Name"
The python code in this file (ur.py) is original work written by
"Student Name". No code in this file is copied from any other source 
including any person, textbook, or on-line resource. I have not shared
this python program with anyone or anything except for submission for grading.  
I understand that the Academic Honesty Policy will be enforced and violators 
will be reported and appropriate action will be taken.

Daily Usage Report by User

The following is a sample Daily Usage Report for user1 on host.cty.senecacollege.ca:

Daily Usage Report for user1
============================
Date          Usage in seconds
2018-02-14          60
2018-02-07          45
2018-02-01           5

Total              110

Daily Usage Report by Remote Host

The following is a sample Daily Usage Report from Remote Host 10.94.10.25 on host.cty.senecacollege.ca:

Daily Usage Report from 10.94.10.25 on host.cty.senecacollege.ca
================================================================
Date          Usage in Minutes
2018-02-14          30
2018-02-07          41
2018-02-01           9

Total               80

Weekly Usage Report by User

The following is a sample Weekly Usage Report for user1 on host.cty.senecacollege.ca:

Weekly Usage Report for user1 on host.cty.senecacollege.ca
=========================================================
Week #         Usage in Minutes
1                  160
2                   45
3                    5
4                   20

Total              220

Weekly Usage Report by Remote Host

The following is a sample Weekly Usage Report from the remote host 10.94.10.25 on host.cty.senecacollege.ca:

Weekly Usage Report from 10.94.10.25 on host.cty.senecacollege.ca
================================================================
Week #     Usage in Minutes
1                30
3                41
5                 9
6                11

Total            91

Monthly Usage Report by User

The following is a sample Monthly Usage Report for user1 on host.cty.senecacollege.ca:

Monthly Usage Report for user1 on host.cty.senecacollege.ca
===========================================================
Month         Usage in Minutes
January            160
February            45

Total              205

Monthly Usage Report by Remote Host

The following is a sample Monthly Usage Report for 10.94.10.25 on host.cty.senecacollege.ca:

Monthly Usage Report from 10.94.10.25 on host.cty.senecacollege.ca
================================================================
Week #     Usage in Minutes
January          30
February         41

Total            71

Program Development and Testing

You should create python functions to handle the following sub-tasks:

• gets login records from the output of "last" command and filters out unwanted records
• reads login records from files and filters out unwanted records
• generate daily usage reports by user or by remote host
• generate weekly usage reports by user or by remote host
• generate monthly usage reports by user or by remote host

To help you with this assignment, here is a template you can use as a starting point in developing your Python Usage Report program.

Once you have finished coding a function, you should start a Python3 interactive shell, import your functions and manually call the function you want to test.

Once you have all the individual function tested and that each is working properly, perform the final test with test data provided by your professor and verify that your program produces the correct results before submitting your python program on Blackboard.

Sample login records file and sample run

• Sample test date files and sample runs

Rubric

Task	Maximum mark	Actual mark
Program Authorship Declaration	1
Program usage	2
Program Options	2
Daily Usage Report by User	2
Daily Usage Report by Remote Host	2
Weekly Usage Report by User	2
Weekly Usage Report by Remote Host	2
Monthly Usage Report by User	2
Monthly Usage Report by Remote Host	2
Get Login Records from 'last'	2
Get Login Records from files	2
Generate user name list	2
Generate remote host IP list	2
Total	25

Submission

After fully testing your program, submit your ur.py file on Blackboard