forked from ScoDoc/ScoDoc
602 lines
20 KiB
Python
602 lines
20 KiB
Python
# -*- coding: UTF-8 -*
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# pylint: disable=invalid-name
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import base64
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import datetime
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import os
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import socket
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import sys
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import time
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import traceback
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import logging
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from logging.handlers import SMTPHandler, WatchedFileHandler
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from threading import Thread
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from flask import current_app, g, request
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from flask import Flask
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from flask import abort, flash, has_request_context, jsonify
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from flask import render_template
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from flask.json import JSONEncoder
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from flask.logging import default_handler
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from flask_bootstrap import Bootstrap
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from flask_caching import Cache
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from flask_login import LoginManager, current_user
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from flask_mail import Mail
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from flask_migrate import Migrate
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from flask_moment import Moment
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from flask_sqlalchemy import SQLAlchemy
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from jinja2 import select_autoescape
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import sqlalchemy
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from flask_cas import CAS
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from app.scodoc.sco_exceptions import (
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AccessDenied,
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ScoBugCatcher,
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ScoException,
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ScoGenError,
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ScoInvalidCSRF,
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ScoValueError,
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APIInvalidParams,
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)
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from config import DevConfig
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import sco_version
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db = SQLAlchemy()
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migrate = Migrate(compare_type=True)
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login = LoginManager()
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login.login_view = "auth.login"
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login.login_message = "Identifiez-vous pour accéder à cette page."
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mail = Mail()
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bootstrap = Bootstrap()
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moment = Moment()
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CACHE_TYPE = os.environ.get("CACHE_TYPE")
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cache = Cache(
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config={
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# see https://flask-caching.readthedocs.io/en/latest/index.html#configuring-flask-caching
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"CACHE_TYPE": CACHE_TYPE or "RedisCache",
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# by default, never expire:
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"CACHE_DEFAULT_TIMEOUT": os.environ.get("CACHE_DEFAULT_TIMEOUT") or 0,
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}
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)
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def handle_sco_value_error(exc):
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return render_template("sco_value_error.j2", exc=exc), 404
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def handle_access_denied(exc):
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return render_template("error_access_denied.j2", exc=exc), 403
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def handle_invalid_csrf(exc):
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"""Form submit with invalid CSRF token"""
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# logout user and go back to login page with an error message
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from app import auth
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auth.logic.logout()
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return render_template("error_csrf.j2", exc=exc), 404
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def internal_server_error(exc):
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"""Bugs scodoc, erreurs 500"""
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# note that we set the 500 status explicitly
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from app.scodoc import sco_utils as scu
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return (
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render_template(
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"error_500.j2",
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SCOVERSION=sco_version.SCOVERSION,
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date=datetime.datetime.now().isoformat(),
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exc=exc,
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traceback_str_base64=base64.urlsafe_b64encode(
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traceback.format_exc().encode(scu.SCO_ENCODING)
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).decode(scu.SCO_ENCODING),
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request_url=request.url,
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scu=scu,
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),
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500,
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)
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def handle_sco_bug(exc):
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"""Un bug, en général rare, sur lequel les dev cherchent des
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informations pour le corriger.
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"""
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if current_app.config["TESTING"] or current_app.config["DEBUG"]:
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raise ScoException # for development servers only
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else:
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Thread(
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target=_async_dump, args=(current_app._get_current_object(), request.url)
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).start()
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return internal_server_error(exc)
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def _async_dump(app, request_url: str):
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from app.scodoc.sco_dump_db import sco_dump_and_send_db
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with app.app_context():
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ndb.open_db_connection()
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try:
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sco_dump_and_send_db("ScoBugCatcher", request_url=request_url)
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except ScoValueError:
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pass
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def handle_invalid_usage(error):
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response = jsonify(error.to_dict())
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response.status_code = error.status_code
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return response
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# JSON ENCODING
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class ScoDocJSONEncoder(JSONEncoder):
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def default(self, o):
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if isinstance(o, (datetime.datetime, datetime.date)):
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return o.isoformat()
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return super().default(o)
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def render_raw_html(template_filename: str, **args) -> str:
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"""Load and render an HTML file _without_ using Flask
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Necessary for 503 error message, when DB is down and Flask may be broken.
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"""
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template_path = os.path.join(
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current_app.config["SCODOC_DIR"],
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"app",
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current_app.template_folder,
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template_filename,
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)
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with open(template_path) as f:
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txt = f.read().format(**args)
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return txt
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def postgresql_server_error(e):
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"""Erreur de connection au serveur postgresql (voir notesdb.open_db_connection)"""
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return render_raw_html("error_503.j2", SCOVERSION=sco_version.SCOVERSION), 503
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class LogRequestFormatter(logging.Formatter):
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"""Ajoute URL et remote_addr for logging"""
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def format(self, record):
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if has_request_context():
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record.url = request.url
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record.remote_addr = request.remote_addr
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else:
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record.url = None
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record.remote_addr = None
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record.sco_user = current_user
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if has_request_context():
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record.sco_admin_mail = current_app.config["SCODOC_ADMIN_MAIL"]
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else:
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record.sco_admin_mail = "(pas de requête)"
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return super().format(record)
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class LogExceptionFormatter(logging.Formatter):
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"""Formatteur pour les exceptions: ajoute détails"""
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def format(self, record):
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if has_request_context():
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record.url = request.url
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record.remote_addr = request.environ.get(
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"HTTP_X_FORWARDED_FOR", request.remote_addr
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)
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record.http_referrer = request.referrer
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record.http_method = request.method
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if request.method == "GET":
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record.http_params = str(request.args)
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else:
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# rep = reprlib.Repr() # abbrège
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record.http_params = str(request.form)[:2048]
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else:
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record.url = None
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record.remote_addr = None
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record.http_referrer = None
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record.http_method = None
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record.http_params = None
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record.sco_user = current_user
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if has_request_context():
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record.sco_admin_mail = current_app.config["SCODOC_ADMIN_MAIL"]
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else:
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record.sco_admin_mail = "(pas de requête)"
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return super().format(record)
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class ScoSMTPHandler(SMTPHandler):
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def getSubject(self, record: logging.LogRecord) -> str:
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stack_summary = traceback.extract_tb(record.exc_info[2])
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frame_summary = stack_summary[-1]
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subject = f"ScoExc({sco_version.SCOVERSION}): {record.exc_info[0].__name__} in {frame_summary.name} {frame_summary.filename}"
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return subject
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class ReverseProxied(object):
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"""Adaptateur wsgi qui nous permet d'avoir toutes les URL calculées en https
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sauf quand on est en dev.
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La variable HTTP_X_FORWARDED_PROTO est positionnée par notre config nginx"""
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def __init__(self, app):
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self.app = app
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def __call__(self, environ, start_response):
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scheme = environ.get("HTTP_X_FORWARDED_PROTO")
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if scheme:
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environ["wsgi.url_scheme"] = scheme # ou forcer à https ici ?
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return self.app(environ, start_response)
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def create_app(config_class=DevConfig):
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app = Flask(__name__, static_url_path="/ScoDoc/static", static_folder="static")
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from app.auth import cas
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CAS(app, url_prefix="/cas", configuration_function=cas.set_cas_configuration)
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app.wsgi_app = ReverseProxied(app.wsgi_app)
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app.json_encoder = ScoDocJSONEncoder
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app.config.from_object(config_class)
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# Evite de logguer toutes les requetes dans notre log
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logging.getLogger("werkzeug").disabled = True
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app.logger.setLevel(app.config["LOG_LEVEL"])
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# Vérifie/crée lien sym pour les URL statiques
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link_filename = f"{app.root_path}/static/links/{sco_version.SCOVERSION}"
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if not os.path.exists(link_filename):
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app.logger.info(f"creating symlink {link_filename}")
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os.symlink("..", link_filename)
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db.init_app(app)
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migrate.init_app(app, db)
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login.init_app(app)
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mail.init_app(app)
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app.extensions["mail"].debug = 0 # disable copy of mails to stderr
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bootstrap.init_app(app)
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moment.init_app(app)
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cache.init_app(app)
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sco_cache.CACHE = cache
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if CACHE_TYPE: # non default
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app.logger.info(f"CACHE_TYPE={CACHE_TYPE}")
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app.register_error_handler(ScoGenError, handle_sco_value_error)
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app.register_error_handler(ScoValueError, handle_sco_value_error)
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app.register_error_handler(ScoBugCatcher, handle_sco_bug)
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app.register_error_handler(ScoInvalidCSRF, handle_invalid_csrf)
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app.register_error_handler(AccessDenied, handle_access_denied)
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app.register_error_handler(500, internal_server_error)
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app.register_error_handler(503, postgresql_server_error)
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app.register_error_handler(APIInvalidParams, handle_invalid_usage)
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from app.auth import bp as auth_bp
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app.register_blueprint(auth_bp, url_prefix="/auth")
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from app.entreprises import bp as entreprises_bp
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app.register_blueprint(entreprises_bp, url_prefix="/ScoDoc/entreprises")
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from app.views import scodoc_bp
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from app.views import scolar_bp
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from app.views import notes_bp
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from app.views import users_bp
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from app.views import absences_bp
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from app.api import api_bp
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from app.api import api_web_bp
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# Enable autoescaping of all templates, including .j2
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app.jinja_env.autoescape = select_autoescape(default_for_string=True, default=True)
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# https://scodoc.fr/ScoDoc
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app.register_blueprint(scodoc_bp)
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# https://scodoc.fr/ScoDoc/RT/Scolarite/...
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app.register_blueprint(scolar_bp, url_prefix="/ScoDoc/<scodoc_dept>/Scolarite")
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# https://scodoc.fr/ScoDoc/RT/Scolarite/Notes/...
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app.register_blueprint(notes_bp, url_prefix="/ScoDoc/<scodoc_dept>/Scolarite/Notes")
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# https://scodoc.fr/ScoDoc/RT/Scolarite/Users/...
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app.register_blueprint(users_bp, url_prefix="/ScoDoc/<scodoc_dept>/Scolarite/Users")
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# https://scodoc.fr/ScoDoc/RT/Scolarite/Absences/...
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app.register_blueprint(
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absences_bp, url_prefix="/ScoDoc/<scodoc_dept>/Scolarite/Absences"
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)
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app.register_blueprint(api_bp, url_prefix="/ScoDoc/api")
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app.register_blueprint(api_web_bp, url_prefix="/ScoDoc/<scodoc_dept>/api")
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scodoc_log_formatter = LogRequestFormatter(
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"[%(asctime)s] %(sco_user)s@%(remote_addr)s requested %(url)s\n"
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"%(levelname)s: %(message)s"
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)
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# les champs additionnels sont définis dans LogRequestFormatter
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scodoc_exc_formatter = LogExceptionFormatter(
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"[%(asctime)s] %(sco_user)s@%(remote_addr)s requested %(url)s\n"
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"%(levelname)s: %(message)s\n"
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"Referrer: %(http_referrer)s\n"
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"Method: %(http_method)s\n"
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"Params: %(http_params)s\n"
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"Admin mail: %(sco_admin_mail)s\n"
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)
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if not app.testing:
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if not app.debug:
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# --- Config logs pour PRODUCTION
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# On supprime le logguer par défaut qui va vers stderr et pollue les logs systemes
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app.logger.removeHandler(default_handler)
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# --- Mail des messages ERROR et CRITICAL
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if app.config["MAIL_SERVER"]:
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auth = None
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if app.config["MAIL_USERNAME"] or app.config["MAIL_PASSWORD"]:
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auth = (app.config["MAIL_USERNAME"], app.config["MAIL_PASSWORD"])
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secure = None
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if app.config["MAIL_USE_TLS"]:
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secure = ()
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host_name = socket.gethostname()
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mail_handler = ScoSMTPHandler(
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mailhost=(app.config["MAIL_SERVER"], app.config["MAIL_PORT"]),
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fromaddr=app.config["SCODOC_MAIL_FROM"],
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toaddrs=["exception@scodoc.org"],
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subject="ScoDoc Exception", # unused see ScoSMTPHandler
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credentials=auth,
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secure=secure,
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)
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mail_handler.setFormatter(scodoc_exc_formatter)
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mail_handler.setLevel(logging.ERROR)
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app.logger.addHandler(mail_handler)
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else:
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# Pour logs en DEV uniquement:
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default_handler.setFormatter(scodoc_log_formatter)
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# Config logs pour DEV et PRODUCTION
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# Configuration des logs (actifs aussi en mode development)
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# usually /opt/scodoc-data/log/scodoc.log:
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# rotated by logrotate
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file_handler = WatchedFileHandler(
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app.config["SCODOC_LOG_FILE"], encoding="utf-8"
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)
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file_handler.setFormatter(scodoc_log_formatter)
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file_handler.setLevel(logging.INFO)
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app.logger.addHandler(file_handler)
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# Log pour les erreurs (exceptions) uniquement:
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# usually /opt/scodoc-data/log/scodoc_exc.log
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file_handler = WatchedFileHandler(
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app.config["SCODOC_ERR_FILE"], encoding="utf-8"
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)
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file_handler.setFormatter(scodoc_exc_formatter)
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file_handler.setLevel(logging.ERROR)
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app.logger.addHandler(file_handler)
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# app.logger.setLevel(logging.INFO)
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app.logger.info(f"{sco_version.SCONAME} {sco_version.SCOVERSION} startup")
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app.logger.info(
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f"create_app({config_class.__name__}, {config_class.SQLALCHEMY_DATABASE_URI})"
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)
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# ---- INITIALISATION SPECIFIQUES A SCODOC
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from app.scodoc import sco_bulletins_generator
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from app.scodoc.sco_bulletins_legacy import BulletinGeneratorLegacy
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from app.scodoc.sco_bulletins_standard import BulletinGeneratorStandard
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from app.but.bulletin_but_pdf import BulletinGeneratorStandardBUT
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from app.scodoc.sco_bulletins_ucac import BulletinGeneratorUCAC
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# l'ordre est important, le premier sera le "défaut" pour les nouveaux départements.
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sco_bulletins_generator.register_bulletin_class(BulletinGeneratorStandard)
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sco_bulletins_generator.register_bulletin_class(BulletinGeneratorStandardBUT)
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sco_bulletins_generator.register_bulletin_class(BulletinGeneratorLegacy)
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sco_bulletins_generator.register_bulletin_class(BulletinGeneratorUCAC)
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if app.testing or app.debug:
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from app.scodoc.sco_bulletins_example import BulletinGeneratorExample
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sco_bulletins_generator.register_bulletin_class(BulletinGeneratorExample)
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from app.auth.cas import set_cas_configuration
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with app.app_context():
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try:
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set_cas_configuration(app)
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except sqlalchemy.exc.ProgrammingError:
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# Si la base n'a pas été upgradée (arrive durrant l'install)
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# il se peut que la table scodoc_site_config n'existe pas encore.
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pass
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return app
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def set_sco_dept(scodoc_dept: str, open_cnx=True):
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"""Set global g object to given dept and open db connection if needed"""
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# Check that dept exists
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try:
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dept = Departement.query.filter_by(acronym=scodoc_dept).first()
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except sqlalchemy.exc.OperationalError:
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abort(503)
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if not dept:
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raise ScoValueError(f"Invalid dept: {scodoc_dept}")
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g.scodoc_dept = scodoc_dept # l'acronyme
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g.scodoc_dept_id = dept.id # l'id
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if open_cnx and not hasattr(g, "db_conn"):
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ndb.open_db_connection()
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if not hasattr(g, "stored_get_formsemestre"):
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g.stored_get_formsemestre = {}
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def user_db_init():
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"""Initialize the users database.
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Check that basic roles and admin user exist.
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"""
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from app.auth.models import User, Role
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current_app.logger.info("Init User's db")
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# Create roles:
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Role.reset_standard_roles_permissions()
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current_app.logger.info("created initial roles")
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# Ensure that admin exists
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admin_mail = current_app.config.get("SCODOC_ADMIN_MAIL")
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if admin_mail:
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admin_user_name = current_app.config["SCODOC_ADMIN_LOGIN"]
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user = User.query.filter_by(user_name=admin_user_name).first()
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if not user:
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user = User(user_name=admin_user_name, email=admin_mail)
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try:
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db.session.add(user)
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db.session.commit()
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except:
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db.session.rollback()
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raise
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current_app.logger.info(
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"created initial admin user, login: {u.user_name}, email: {u.email}".format(
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u=user
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)
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)
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def sco_db_insert_constants():
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"""Initialize Sco database: insert some constants (modalités, ...)."""
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from app import models
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current_app.logger.info("Init Sco db")
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# Modalités:
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models.FormationModalite.insert_modalites()
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def initialize_scodoc_database(erase=False, create_all=False):
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"""Initialize the database for unit tests
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Starts from an existing database and create all necessary
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SQL tables and functions.
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If erase is True, _erase_ all database content.
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"""
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# - ERASE (the truncation sql function has been defined above)
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if erase:
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truncate_database()
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# - Create all tables
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if create_all:
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# managed by migrations, except for TESTS
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db.create_all()
|
|
# - Insert initial roles and create super-admin user
|
|
user_db_init()
|
|
# - Insert some constant values (modalites, ...)
|
|
sco_db_insert_constants()
|
|
# - Flush cache
|
|
clear_scodoc_cache()
|
|
|
|
|
|
def truncate_database():
|
|
"""Erase content of all tables (including users !) from
|
|
the current database.
|
|
"""
|
|
# use a stored SQL function, see createtables.sql
|
|
try:
|
|
db.session.execute("SELECT truncate_tables('scodoc');")
|
|
db.session.commit()
|
|
except:
|
|
db.session.rollback()
|
|
raise
|
|
# Remet les compteurs (séquences sql) à zéro
|
|
db.session.execute(
|
|
"""
|
|
CREATE OR REPLACE FUNCTION reset_sequences(username IN VARCHAR) RETURNS void AS $$
|
|
DECLARE
|
|
statements CURSOR FOR
|
|
SELECT sequence_name
|
|
FROM information_schema.sequences
|
|
ORDER BY sequence_name ;
|
|
BEGIN
|
|
FOR stmt IN statements LOOP
|
|
EXECUTE 'ALTER SEQUENCE ' || quote_ident(stmt.sequence_name) || ' RESTART;';
|
|
END LOOP;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
|
|
SELECT reset_sequences('scodoc');
|
|
"""
|
|
)
|
|
db.session.commit()
|
|
|
|
|
|
def clear_scodoc_cache():
|
|
"""Clear ScoDoc cache
|
|
This cache (currently Redis) is persistent between invocation
|
|
and it may be necessary to clear it during developement or tests.
|
|
"""
|
|
# attaque directement redis, court-circuite ScoDoc:
|
|
import redis
|
|
|
|
r = redis.Redis()
|
|
r.flushall()
|
|
# Also clear local caches:
|
|
sco_preferences.clear_base_preferences()
|
|
|
|
|
|
# --------- Logging
|
|
def log(msg: str):
|
|
"""log a message.
|
|
If Flask app, use configured logger, else stderr.
|
|
"""
|
|
try:
|
|
dept = getattr(g, "scodoc_dept", "")
|
|
msg = f" ({dept}) {msg}"
|
|
except RuntimeError:
|
|
# Flask Working outside of application context.
|
|
pass
|
|
|
|
if current_app and not current_app.config["DEBUG"]:
|
|
current_app.logger.info(msg)
|
|
else:
|
|
sys.stdout.flush()
|
|
sys.stderr.write(
|
|
f"""[{time.strftime("%a %b %d %H:%M:%S %Y")}] scodoc: {msg}\n"""
|
|
)
|
|
sys.stderr.flush()
|
|
|
|
|
|
# Debug: log call stack
|
|
def log_call_stack():
|
|
log("Call stack:\n" + "\n".join(x.strip() for x in traceback.format_stack()[:-1]))
|
|
|
|
|
|
# Alarms by email:
|
|
def send_scodoc_alarm(subject, txt):
|
|
from app import email
|
|
|
|
sender = email.get_from_addr()
|
|
email.send_email(subject, sender, ["exception@scodoc.org"], txt)
|
|
|
|
|
|
from app.models import Departement
|
|
from app.scodoc import notesdb as ndb, sco_preferences
|
|
from app.scodoc import sco_cache
|
|
|
|
|
|
def scodoc_flash_status_messages():
|
|
"""Should be called on each page: flash messages indicating specific ScoDoc status"""
|
|
email_test_mode_address = sco_preferences.get_preference("email_test_mode_address")
|
|
if email_test_mode_address:
|
|
flash(
|
|
f"Mode test: mails redirigés vers {email_test_mode_address}",
|
|
category="warning",
|
|
)
|
|
|
|
|
|
def critical_error(msg):
|
|
"""Handle a critical error: flush all caches, display message to the user"""
|
|
import app.scodoc.sco_utils as scu
|
|
|
|
log(f"\n*** CRITICAL ERROR: {msg}")
|
|
send_scodoc_alarm(f"CRITICAL ERROR: {msg}", msg)
|
|
clear_scodoc_cache()
|
|
raise ScoValueError(
|
|
f"""
|
|
Une erreur est survenue.
|
|
|
|
Si le problème persiste, merci de contacter le support ScoDoc via
|
|
{scu.SCO_DISCORD_ASSISTANCE}
|
|
|
|
{msg}
|
|
"""
|
|
)
|