Installation ============ Minimum versions of required packages: - python3-psycopg2 ≥ 2.5.4 - swi-prolog ≥ 7.3 These instructions assume you are running Debian Jessie. Install dependencies: apt install apache2 nodejs npm python3 python3-nltk python3-ply \ python3-psycopg2 python3-termcolor SWI prolog ---------- To use the correct SWI prolog package (>= 7.3) on Debian, add a custom repository by creating the file /etc/apt/sources.list.d/prolog.list containing the following lines: deb http://ppa.launchpad.net/swi-prolog/devel/ubuntu trusty main deb-src http://ppa.launchpad.net/swi-prolog/devel/ubuntu trusty main After that run the following sequence of shell statements to update the package cache, register the new repository's key, and again refresh the package cache using the additional key: apt-get update apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EF8406856DBFCA18 apt-get update libseccomp ---------- A new version of libseccomp (≥ 2.2) with Python bindings is needed to sandbox Python interpreters. This is not available yet in most distributions. You can download custom-built packages for Debian Jessie at https://codeq.si/libseccomp2_2.2.3-2_amd64.deb https://codeq.si/seccomp_2.2.3-2_amd64.deb and install them using dpkg --install libseccomp2_2.2.3-2_amd64.deb seccomp_2.2.3-2_amd64.deb Alternatively, fetch the latest sources with git clone https://github.com/seccomp/libseccomp and configure with --enable-python. nodejs ------ Run "npm install" inside the codeq-server/web directory to install all dependencies (they will be installed inside the web directory) sandbox ------- Go to directory codeq-server/python/runner and run the following commands to build the sandbox and set appropriate permissions: make sandbox sudo setcap cap_setuid,cap_setgid+ep sandbox Settings ======== Replace $webroot in this section with the path to codeq-web repo. Remember to grant read access to $webroot to the apache user. Set environment variables: CODEQ_PROBLEMS= CODEQ_WEB_OUTPUT=$webroot/data CODEQ_DB_HOST=
CODEQ_DB_DATABASE= CODEQ_DB_USER= CODEQ_DB_PASS= Apache ------ Enable required modules: a2enmod proxy proxy_http proxy_wstunnel rewrite Add the following directives to the VirtualHost configuration: DocumentRoot "$webroot" Require all granted RewriteEngine on RewriteCond %{REQUEST_URI} ^/ws/ [NC] RewriteCond %{QUERY_STRING} transport=websocket [NC] RewriteRule /(.*) ws://localhost:8083/$1 [P,L] ProxyPass /ws/ http://localhost:8083/ws/ ProxyPassReverse /ws/ http://localhost:8083/ws/ Robot ----- A Python server on the EV3 brick allows communication between the robot and the CodeQ application. First install the ev3dev environment on a microSD card by following the steps on http://www.ev3dev.org/docs/getting-started/. Copy robot/main.py to the ev3dev environment: scp robot/main.py root@:/root SSH into the ev3dev environment and install the required packages: apt install python3 libboost-python1.55.0 python3-setuptools python3-pil easy_install3 --user eventlet python-engineio python-ev3dev==0.2.2 Finally, ensure the server is run when the robot is powered on. Add the following line to /etc/rc.local just before `exit 0`: python3 /root/main.py & Running ======= - first build static JSON data with scripts/build_web_resources.py, read its heading comment for details - run the prolog interpreter server: swipl prolog/runner/main.pl - run the session daemon: python3 daemon.py - run the web server for client communication: node web/main.js Notes ===== Testing ------- You can test stuff in a python interpreter: >>> import server >>> session = server.user_session.authenticate_and_create_session(, ) >>> session.get_problem_data('python', 'introduction', 'fahrenheit_to_celsius') >>> python = session.get_python() >>> python.test(231, 180, '''print('-17.7')''') >>> python.hint(231, 180, '''print('-17.7')''') >>> prolog = session.get_prolog() >>> prolog.test(231, 96, 'sister(X,Y):- parent(P,X), parent(P,Y), female(X).') >>> prolog.hint(231, 96, 'sister(X,Y):- parent(P,X), parent(P,Y), female(X).') To check for errors in hint definitions you can use the problem_html script: python3 -m scripts.problem_html python introduction ballistics sl > out.html Traces ------ Actions and corresponding additional attributes are specified here. Generic: - open(timestamp) # opened the problem page; timestamp = Date.now() on client - close() # closed the problem page - ins(off, txt) # inserted text; off = offset, txt = inserted characters - rm(off, txt) # deleted text; off = offset, txt = deleted characters - plan() # clicked "plan" - hint(feedback) # clicked "hint"; feedback = list of returned hint objects - test(feedback) # clicked "test"; feedback = list of returned hint objects Prolog: - prolog_solve(query) - prolog_next() - prolog_end() Python: - python_run(program) - python_stop() - python_input(txt) Robot: - robot_run(program) - robot_stop() Obsolete actions: - slva(qry) # "solve all" from tuProlog - hnt # hint button press