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Automated_MOSS_Plagiarism_Checker

This is a guide to a MOSS Plagiarism Checker for Hacckerrank contests with customized automation scripts. It is originally derived from sbk173/Hackerrank-Scraper-and-MOSS-Plagiarism and a few changes have been made to it so as to automate the process completely.

Download dependencies

  • Perl
  • Node (>=18)
  • Selenium
  • npm

Important Note

  • The scripts have been written using bash and it is recommended to use unix shells or run the WSL distro shell by running the distro from windows search (WSL required)
  • If it is not possible to run the script please follow the commands in the scripts and execute them individually (Installing WSL is much more easier and just requires a few steps -> wsl --install -d Ubuntu)

Line endings and other special character issues might pop up if run on windows command prompt or powershell directly, some users might face an issue with even bash on powershell so it is best to follow the steps given above

Setup (just needed for the first time)

  1. Clone the repo
    git clone https://github.com/QubitMatrix/Automated_MOSS_Plagiarism_Checker.git
  2. Ensure all dependencies are fulfilled
    pip install -r requirements.txt
  3. Move into the Scraper folder
    cd Automated_MOSS_Plagiarism_Checker/Scraper
  4. Retrieve Cookie
    • Get the cookie value from any XHR requests on the hackerrank page (Developer Tools, Network Tab)
    • Set the cookie variable in ./start.sh with the value from previous step
  5. Give execution permission to start.sh and moss.pl
    chmod u+x start.sh
    chmod u+x ../moss/moss.pl
  6. Save a file with all students SRN
    For each section handled create a file all_srn_'section'.txt in the Scraper/Results directory. This file should contain the sorted list of all SRN as given in the shared excel sheet

Execution

  1. Move back to the main directory and execute the script
    cd ../ && bash ./automate.sh "enter session number here"

    Eg: bash ./automate.sh 1 can generate report for all contests with daa-s1-'section'
    => Replace the sections list in automate.sh and ./Scraper/scraper_script.py with the sections that you are handling

If execution gives an error /usr/bin/env: ‘bash\r’: No such file or directory it might be due to npm not being installed, install npm on the WSL distro and try again

FetchError: invalid json response body at https://www.hackerrank.com/rest/contests error might be caused if the cookies have changed recheck if the cookie value given in start.sh and the admin contest page match

The final plagiarism links will be available in ./moss/plagiarismReport.csv
The list of students with plagiarism above threshold will be stored in individual files ./moss/'contest_slug'.txt
The scores extracted from the leaderboard will be stored in ./Scraper/Results

The only file required to fill the marksheet is the 'contestslug'-final.csv in the Scraper/Results directory.

If you have questions or ideas, just drop them in the issues section!