katzei/contact-form
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Meewan
2024-08-16 15:40:49 +02:00
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README.md
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# contact-form # contact-form
Formulaire de contacte pour le site de katzei
# installation
To install you need to:
* install flask, jinja2 an sqlalchemy
* clone the repo in the /site directory
* copy the etc content in /etc
* link /etc/contact-form/contact-form.service to /etc/systemd/system/contact-form.service
By default it will serve on port 9090

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__init__.py Normal file
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etc/contact-form/config.ini Normal file
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[app]
path = /dyn/contact
db_path = /tmp/contact-form.db
# time to keep the captacha valid in seconds
captcha_timout = 3600
[email]
reciever = email@example.com
server = localhost

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etc/contact-form/contact-form.service Normal file
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[Unit]
Description=Nextcloudregister a service to register in nextcloud
After=local-fs.target
Wants=network-online.target
[Service]
Environment=PYTHONPATH=/usr/lib/python3/dist-packages/:/sites/
ExecStart=/usr/bin/uwsgi-core --ini /etc/contact-form/uwsgi.ini
User=contactform
Group=contactform
[Install]
WantedBy=multi-user.target

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etc/contact-form/uwsgi.ini Normal file
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[uwsgi]
socket = :9090
protocol = http
wsgi-file = /sites/contact-form/webapp.py
plugin = python3

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requirements.txt Normal file
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flask
jinja2
sqlalchemy

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templates/form.html Normal file
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<!doctype html>
<html lang="fr">
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="/css/frombulma.css">
<link rel="stylesheet" href="/css/styles.css">
<style type="text/css">
.form-line>.input, .form-line>.textarea{
border-color: #aaaaaa;
width:100%;
margin-bottom: 1em;
}
.form-line>.textarea{
min-height: 25em;
}
.form-error{
width: 100%;
border-radius: 4px;
margin-bottom: 1em;
}
.form-alert{
background-color: rgba(255, 0, 0, 0.2);
}
</style>
</head>
<body>
<form method="post">
<input type="hidden" name="token" value={{token}}>
<div class="form-line field">
<label class="label" for=email>Adresse de courriel</label>
<div class="form-line control">
<input class="input" id="email" type="email" name="email" value="{{email}}" required/>
</div>
</div>
<div class="form-line field">
<label class="label" for="message">Votre message</label>
</div>
<div class="form-line field">
<textarea class="textarea" id="message" name="message" rows="20" minlength="100" maxlength="10000" required>{{message}}</textarea>
</div>
<div class="form-line field">
<label class="label" for="captcha">Vérification d’humanité: combien font {{first_number}} {{op_text}} {{second_number}} ?</label>
</div>
<div class="form-line field">
<input class="input {% if captcha_error %}form-alert{% endif %}" id="captcha" type="number" name="captcha" min="-10" max="100" required />
</div>
{% if captcha_error %}
<div class="form-error">Le captcha est invalide veuillez réessayer</div>
{% endif %}
<div class="form-line field">
<input class="button is-link" type="submit" value="Envoyer" />
</div>
</form>
</body>
</html>

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templates/success.html Normal file
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<!doctype html>
<html lang="fr">
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="/css/frombulma.css">
<link rel="stylesheet" href="/css/styles.css">
</head>
<body>
Votre demande a bien été transmise. Nous vous recontacterons dès que possible.
</body>
</html>

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webapp.py Normal file
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from configparser import ConfigParser
from email.message import EmailMessage
import random
import operator
from os.path import exists
from secrets import token_urlsafe
from smtplib import SMTP
from time import time
import flask
import sqlalchemy
import sqlalchemy.orm
CONFIG_PATH = "/etc/contact-form/config.ini"
OPERATORS = (
('+', operator.add),
('×', operator.mul),
('-', operator.sub),
)
config = ConfigParser()
config.read(CONFIG_PATH)
app = flask.Flask(__name__)
Base = sqlalchemy.orm.declarative_base()
class Captcha(Base):
__tablename__ = "captcha"
token = sqlalchemy.Column(sqlalchemy.String(90), primary_key=True)
answer = sqlalchemy.Column(sqlalchemy.String(3))
expiration = sqlalchemy.Column(sqlalchemy.Integer())
def get_session():
db_path = config.get("app", "db_path", fallback="")
engine = sqlalchemy.create_engine(f"sqlite:///{db_path}")
if not exists(db_path):
Base.metadata.create_all(engine)
session_factory = sqlalchemy.orm.sessionmaker(engine)
return session_factory()
def clean_db(session):
session.query(Captcha).filter(Captcha.expiration < int(time())).delete()
def generate_captacha():
session = get_session()
clean_db(session)
first_number = random.randrange(10)
second_number = random.randrange(10)
op_text, op_func = random.choice(OPERATORS)
result = op_func(first_number, second_number)
captcha = Captcha(
token=token_urlsafe(67),
answer=str(result),
expiration=int(time()) + config.getint("app", "captcha_timout", fallback=3600),
)
session.add(captcha)
session.commit()
return {
"first_number": first_number,
"second_number": second_number,
"op_text": op_text,
"token": captcha.token,
}
def validate_captcha(token, value):
result = False
session = get_session()
clean_db(session)
captcha = session.query(Captcha).filter(Captcha.token == token).one_or_none()
if captcha:
result = value == captcha.answer
session.query(Captcha).filter(Captcha.token == token).delete()
session.commit()
return result
def send_email(sender, message):
email = EmailMessage()
email.set_content(message)
email["From"] = sender
email["To"] = config.get("email", "reciever")
smtp = SMTP(config.get("email", "server"))
smtp.send_message(email)
smtp.quit()
@app.route(config.get("app", "path"), methods=["GET"])
def get_form(context=None):
context = (context or {}) | generate_captacha()
return flask.render_template("form.html", **context)
@app.route(config.get("app", "path"), methods=["POST"])
def validate_form():
form = flask.request.form
if not all(form.get(f, False) for f in ("email", "message", "captcha", "token")):
return "Erreur", 400
if not validate_captcha(form["token"], form["captcha"]):
context = dict(**form)
context["captcha_error"] = True
context.pop("captcha", None)
return get_form(context=context)
send_email(sender=form["email"], message=form["message"])
return flask.render_template("success.html")