www-main/main.py

# -*- coding: utf-8 -*-

import feedparser
import requests
import string
import random
import json
from flask import Flask, render_template, request, flash, session, abort, jsonify, redirect
from flask_session import Session
from flask_session_captcha import FlaskSessionCaptcha
from time import mktime, strftime
from datetime import datetime

app = Flask('main')
app.config.from_pyfile('main.cfg')

Session(app)
captcha = FlaskSessionCaptcha(app)

def pull_feed_entries():
    all_entries = []
    for tag, url in app.config['FEEDS']:
        entries = feedparser.parse(url).entries
        for e in entries:
            e.tag = tag
            dt = datetime.fromtimestamp(mktime(e.published_parsed))
            e.updated_display = dt.strftime(app.config['DATE_FORMAT'])
        all_entries.extend(entries)
    all_entries.sort(key=lambda e: e.published_parsed, reverse=True)
    return all_entries[:app.config['MAX_ENTRIES']]

def mailman_subscribe(email, mailing_list):
    password = "".join(random.choice(string.letters) for _ in range(8))
    post = {"email": email, "fullname": "", "pw": password, "pw-conf": password, "email-button": "Zapisz", "digest": 0}
    headers = {"X-Forwarded-For": request.remote_addr}
    r = requests.post("https://lists.hackerspace.pl/subscribe/" + mailing_list, post, headers=headers)
    if r.status_code != 200:
       return False
    return True

def parse_subscribe_requests():
    if not captcha.validate():
        flash(u"Nie rozwiązano poprawnie CAPTCHA.", "error")
        return
    if "email" in request.form:
        email = request.form["email"].strip()
        if len(email) > 0:
            if "@" in email:
                lists = []
                if "mail-waw" in request.form:
                    lists.append("waw")
                if "mail-proj" in request.form:
                    lists.append("waw-proj")
                if "mail-offtopic" in request.form:
                    lists.append("waw-ot")
                subscribed = []
                failed = []
                for maillist in lists:
                    if mailman_subscribe(email, maillist):
                        subscribed.append(maillist)
                    else:
                        failed.append(maillist)
                if len(subscribed) == 1:
                    flash(u"Pomyślnie zasubskrybowano na listę %s@lists.hackerspace.pl.\
    W celu aktywacji subskrypcji odwiedź odnośnik wysłany mailem na adres %s." % (subscribed[0], email))
                elif len(subscribed) > 1:
                    flash(u"Pomyślnie zasubskrybowano na listy %s. \
    W celu aktywacji subskrypcji odwiedź odnośniki wysłane mailem na adres %s." % \
                        (", ".join(l + "@lists.hackerspace.pl" for l in subscribed), email))
                if len(failed) > 0:
                    flash(u"Wystąpił problem z zapisaniem na następujące listy: %s. Ups! Napisz na bofh@hackerspace.pl, spróbujemy to naprawić." % ", ".join(failed), "error")
            else:
                flash(u"Podano nieprawidłowy adres email.", "error")
        else:
            flash(u"Nie podano adresu email.", "error")

@app.route('/', methods=["GET", "POST"])
def main():
    if request.method == "POST":
        parse_subscribe_requests()
    return render_template('main.html', entries=pull_feed_entries())

@app.route('/about', methods=["GET", "POST"])
def about():
    if request.method == "POST":
        parse_subscribe_requests()
    return render_template('about.html', entries=pull_feed_entries())
@app.route('/about_en', methods=["GET", "POST"])
def about_en():
    if request.method == "POST":
        parse_subscribe_requests()
    return render_template('about_en.html', entries=pull_feed_entries())

@app.route('/card', methods=['GET', 'POST'])
def card():
    # redirect to homepage for now - will maybe be an API endpoint for the new
    # membership card in the future
    return redirect('https://hackerspace.pl/')

@app.route('/spaceapi')
def spaceapi():
    space_open = None
    people_now_present = {'value': 0}
    open_day = False

    try:
        at_response = requests.get(app.config['AT_API_URL'], headers={
            'User-Agent': 'HSWAWSpaceAPI/1.0 +https://hackerspace.pl/spaceapi'
            })
        at_object = json.loads(at_response.content)

        space_open = len(at_object['users']) > 0
        people_now_present['value'] = len(at_object['users'])
        if len(at_object['users']) > 0:
            people_now_present['names'] = list(user['login'] for user in at_object['users'])

        open_day = space_open and int(strftime("%w")) == app.config['OPEN_DAY_WEEKDAY'] \
                              and int(strftime("%H")) >= app.config['OPEN_DAY_BEGIN_HOUR']
    except:
        import traceback
        traceback.print_exc()

    result = {
            "api": "0.13",
            "space": "Warsaw Hackerspace",
            "logo": "https://static.hackerspace.pl/img/syrenka-black.png",
            "url": "https://hackerspace.pl",
            "location": {
                "lat": 52.24160,
                "lon": 20.98485,
                "address": "ul. Wolność 2A, 01-018 Warszawa, Poland",
            },
            "state": {
                "open": space_open,
                "message": ("open for public" if open_day else "members only") +
                    (", %d multicellular bodies present" % people_now_present['value'] if people_now_present['value'] else ""),
                # @TODO: customized *space* logo
                "icon": {
                    "open": "https://static.hackerspace.pl/img/status-open-small.png",
                    "closed": "https://static.hackerspace.pl/img/status-closed-small.png",
                }
            },
            "contact": {
                "irc": "irc://chat.freenode.net/#hackerspace-pl",
                "twitter": "@hackerspacepl",
                "facebook": "hackerspacepl",
                "ml": "waw@lists.hackerspace.pl",
            },
            "issue_report_channels": [
                "ml"
            ],
            "projects": [
                "https://wiki.hackerspace.pl/projects",
            ],
            "feeds": {
                "blog": {"type": "atom", "url": "https://blog.hackerspace.pl/feed/atom/"},
                "calendar": {"type": "ical", "url": "https://www.google.com/calendar/ical/hackerspacewaw%40gmail.com/public/basic.ics"},
                "wiki": {"type": "rss", "url": "https://wiki.hackerspace.pl/feed.php"},
            },
            "sensors": {
                "people_now_present": [people_now_present]
            },
        }

    # SpaceAPI version <0.13 compliance
    result['open'] = result['state']['open']
    result['icon'] = result['state']['icon']
    result['status'] = result['state']['message']
    result['address'] = result['location']['address']
    result['lat'] = result['location']['lat']
    result['lon'] = result['location']['lon']
    return jsonify(result)

@app.before_request
def csrf_protect():
    if request.method == "POST":
        token = session.pop('_csrf_token', None)
        if not token or token != request.form.get('_csrf_token'):
            abort(403)
        generate_csrf_token()

def generate_csrf_token():
    if '_csrf_token' not in session:
        session['_csrf_token'] = "".join(random.choice(string.letters) for _ in range(32))
    return session['_csrf_token']

app.jinja_env.globals['csrf_token'] = generate_csrf_token 

if __name__ == '__main__':
    app.run('0.0.0.0', 8080, debug=True)