WIP: migration de ZNotes, decorateurs, etc.

README.md

@@ -33,6 +33,13 @@ pour régénerer ce fichier:
 
     pip freeze > requirements.txt
 
+### Bidouilles temporaires
+
+Installer le bon vieux `pyExcelerator` dans l'environnement:
+
+    (cd /tmp; tar xfz /opt/scodoc/Products/ScoDoc/config/softs/pyExcelerator-0.6.3a.patched.tgz )
+    (cd /tmp/pyExcelerator-0.6.3a.patched/; python setup.py install)
+
 ## Lancement serveur (développement, sur VM Linux)
 
     export FLASK_APP=scodoc.py

app/__init__.py

@@ -43,9 +43,22 @@ def create_app(config_class=Config):
 
     app.register_blueprint(auth_bp, url_prefix="/auth")
 
-    from app.views import notes_bp
+    from app.views import essais_bp
 
-    app.register_blueprint(notes_bp, url_prefix="/ScoDoc")
+    app.register_blueprint(essais_bp, url_prefix="/Essais")
+
+    from app.views import scolar_bp
+    from app.views import notes_bp
+    from app.views import absences_bp
+
+    # https://scodoc.fr/ScoDoc/RT/Scolarite/...
+    app.register_blueprint(scolar_bp, url_prefix="/ScoDoc/<scodoc_dept>/Scolarite")
+    # https://scodoc.fr/ScoDoc/RT/Scolarite/Notes/...
+    app.register_blueprint(notes_bp, url_prefix="/ScoDoc/<scodoc_dept>/Scolarite/Notes")
+    # https://scodoc.fr/ScoDoc/RT/Scolarite/Absences/...
+    app.register_blueprint(
+        absences_bp, url_prefix="/ScoDoc/<scodoc_dept>/Scolarite/Absences"
+    )
 
     from app.main import bp as main_bp
 

app/decorators.py

@@ -16,26 +16,6 @@ from werkzeug.exceptions import BadRequest
 from app.auth.models import Permission
 
 
-def permission_required(permission):
-    def decorator(f):
-        @wraps(f)
-        def decorated_function(*args, **kwargs):
-            current_app.logger.info(
-                "permission_required: %s in %s" % (permission, g.scodoc_dept)
-            )
-            if not current_user.has_permission(permission, g.scodoc_dept):
-                abort(403)
-            return f(*args, **kwargs)
-
-        return decorated_function
-
-    return decorator
-
-
-def admin_required(f):
-    return permission_required(Permission.ScoSuperAdmin)(f)
-
-
 class ZUser(object):
     "Emulating Zope User"
 
@@ -99,13 +79,37 @@ class ZResponse(object):
         self.headers[header.tolower()] = value
 
 
-def scodoc7func(func):
+def permission_required(permission):
+    def decorator(f):
+        @wraps(f)
+        def decorated_function(*args, **kwargs):
+            if "scodoc_dept" in kwargs:
+                g.scodoc_dept = kwargs["scodoc_dept"]
+                del kwargs["scodoc_dept"]
+            current_app.logger.info(
+                "permission_required: %s in %s" % (permission, g.scodoc_dept)
+            )
+            if not current_user.has_permission(permission, g.scodoc_dept):
+                abort(403)
+            return f(*args, **kwargs)
+
+        return decorated_function
+
+    return decorator
+
+
+def admin_required(f):
+    return permission_required(Permission.ScoSuperAdmin)(f)
+
+
+def scodoc7func(context):
     """Décorateur pour intégrer les fonctions Zope 2 de ScoDoc 7.
     Si on a un kwarg `scodoc_dept`(venant de la route), le stocke dans `g.scodoc_dept`.
     Ajoute l'argument REQUEST s'il est dans la signature de la fonction.
     Les paramètres de la query string deviennent des (keywords) paramètres de la fonction.
     """
 
+    def s7_decorator(func):
         @wraps(func)
         def scodoc7func_decorator(*args, **kwargs):
             """Decorator allowing legacy Zope published methods to be called via Flask
@@ -119,11 +123,11 @@ def scodoc7func(func):
             and `g.scodoc_dept` if present in the argument (for routes like `/<scodoc_dept>/Scolarite/sco_exemple`).
             """
             assert not args
-        if hasattr(g, "zrequest"):
+            # Détermine si on est appelé via une route ("toplevel")
-            top_level = False
+            # ou par un appel de fonction python normal.
-        else:
+            top_level = not hasattr(g, "zrequest")
+            if top_level:
                 g.zrequest = None
-            top_level = True
             #
             if "scodoc_dept" in kwargs:
                 g.scodoc_dept = kwargs["scodoc_dept"]
@@ -147,6 +151,8 @@ def scodoc7func(func):
             for arg_name in arg_names:
                 if arg_name == "REQUEST":  # special case
                     pos_arg_values.append(REQUEST)
+                elif arg_name == "context":
+                    pos_arg_values.append(context)
                 else:
                     pos_arg_values.append(req_args[arg_name])
             current_app.logger.info("pos_arg_values=%s" % pos_arg_values)
@@ -184,6 +190,8 @@ def scodoc7func(func):
 
         return scodoc7func_decorator
 
+    return s7_decorator
+
 
 # Le "context" de ScoDoc7
 class ScoDoc7Context(object):
@@ -193,3 +201,6 @@ class ScoDoc7Context(object):
 
     def __init__(self, globals_dict):
         self.__dict__ = globals_dict
+
+    def __repr__(self):
+        return "ScoDoc7Context()"

app/main/routes.py

@@ -14,6 +14,8 @@ from app.main import bp
 
 from app.decorators import scodoc7func, admin_required
 
+context = None
+
 
 @bp.route("/")
 @bp.route("/index")
@@ -47,7 +49,7 @@ D = {"count": 0}
 
 @bp.route("/zopefunction", methods=["POST", "GET"])
 @login_required
-@scodoc7func
+@scodoc7func(context)
 def a_zope_function(y, x="defaut", REQUEST=None):
     """Une fonction typique de ScoDoc7"""
     H = get_request_infos() + [
@@ -64,7 +66,7 @@ def a_zope_function(y, x="defaut", REQUEST=None):
 
 
 @bp.route("/zopeform_get")
-@scodoc7func
+@scodoc7func(context)
 def a_zope_form_get(REQUEST=None):
     H = [
         """<h2>Formulaire GET</h2>
@@ -81,7 +83,7 @@ def a_zope_form_get(REQUEST=None):
 
 
 @bp.route("/zopeform_post")
-@scodoc7func
+@scodoc7func(context)
 def a_zope_form_post(REQUEST=None):
     H = [
         """<h2>Formulaire POST</h2>
@@ -98,7 +100,7 @@ def a_zope_form_post(REQUEST=None):
 
 
 @bp.route("/ScoDoc/<dept_id>/Scolarite/Notes/formsemestre_status")
-@scodoc7func
+@scodoc7func(context)
 def formsemestre_status(dept_id=None, formsemestre_id=None, REQUEST=None):
     """Essai méthode de département
     Le contrôle d'accès doit vérifier les bons rôles : ici Ens<dept_id>

app/scodoc/ZScolar.py

@@ -416,11 +416,6 @@ REQUEST.URL0=%s<br/>
     #    GESTION DE LA BD
     #
     # --------------------------------------------------------------------
-    security.declareProtected(ScoSuperAdmin, "GetDBConnexionString")
-
-    def GetDBConnexionString(self):
-        # should not be published (but used from contained classes via acquisition)
-        return self._db_cnx_string
 
     security.declareProtected(ScoSuperAdmin, "GetDBConnexion")
     GetDBConnexion = ndb.GetDBConnexion
@@ -780,7 +775,9 @@ REQUEST.URL0=%s<br/>
     # -------------------------- INFOS SUR ETUDIANTS --------------------------
     security.declareProtected(ScoView, "getEtudInfo")
 
-    def getEtudInfo(self, etudid=False, code_nip=False, filled=False, REQUEST=None, format=None):
+    def getEtudInfo(
+        self, etudid=False, code_nip=False, filled=False, REQUEST=None, format=None
+    ):
         """infos sur un etudiant pour utilisation en Zope DTML
         On peut specifier etudid
         ou bien cherche dans REQUEST.form: etudid, code_nip, code_ine

app/scodoc/sco_exceptions.py

@@ -66,6 +66,12 @@ class FormatError(ScoValueError):
     pass
 
 
+class ScoConfigurationError(ScoValueError):
+    """Configuration invalid"""
+
+    pass
+
+
 class ScoLockedFormError(ScoException):
     def __init__(self, msg="", REQUEST=None):
         msg = (

app/scodoc/sco_permissions.py

@@ -49,6 +49,8 @@ class Permission:
     def init_permissions():
         for (perm, symbol, description) in _SCO_PERMISSIONS:
             setattr(Permission, symbol, perm)
+            # Crée aussi les attributs dans le module (ScoDoc7 compat)
+            globals()[symbol] = perm
             Permission.description[symbol] = description
         Permission.NBITS = len(_SCO_PERMISSIONS)
 

app/templates/main/index.html

@@ -2,7 +2,7 @@
 {% import 'bootstrap/wtf.html' as wtf %}
 
 {% block app_content %}
-<h1>Essais Flask pour ScoDoc 8: accueil</h1>
+<h1>Protoype ScoDoc 8: accueil</h1>
 <div class="row">
     <h2>Avec login requis</h2>
     <ul>

app/views/__init__.py

@@ -3,6 +3,9 @@
 """
 from flask import Blueprint
 
+scolar_bp = Blueprint("scolar", __name__)
 notes_bp = Blueprint("notes", __name__)
+absences_bp = Blueprint("absences", __name__)
+essais_bp = Blueprint("essais", __name__)
 
-from app.views import notes
+from app.views import notes, scolar, absences

app/views/absences.py

@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+"""
+Module absences: issu de ScoDoc7 / ZAbsences.py
+
+Emmanuel Viennet, 2021
+"""
+
+from flask import g
+from flask import current_app
+
+from app.decorators import (
+    scodoc7func,
+    ScoDoc7Context,
+    permission_required,
+    admin_required,
+    login_required,
+)
+from app.auth.models import Permission
+
+from app.views import absences_bp as bp
+
+context = ScoDoc7Context(globals())
+
+
+@bp.route("/")
+@scodoc7func(context)
+def index_html():
+    """Un exemple de fonction ScoDoc 7 dans ZAbsences"""
+    return """<html>
+        <body><h1>ScoDoc 8 ZAbsences !</h1>
+        <p>ZAbsences ScoDoc 8</p>
+        <p>g.scodoc_dept=%(scodoc_dept)s</p>
+        </body>
+        </html>
+        """ % {
+        "scodoc_dept": g.scodoc_dept,
+    }

app/views/essais.py

@@ -0,0 +1,65 @@
+# -*- coding: UTF-8 -*
+"""
+Module Essais: divers essais pour la migration vers Flask
+
+Emmanuel Viennet, 2021
+"""
+
+from flask import g
+from flask import current_app
+
+from app.decorators import (
+    scodoc7func,
+    ScoDoc7Context,
+    permission_required,
+    admin_required,
+    login_required,
+)
+from app.auth.models import Permission
+
+from app.views import notes_bp as bp
+
+# import sco_core deviendra:
+from app.ScoDoc import sco_core
+
+context = ScoDoc7Context(globals())
+
+
+@bp.route("/<scodoc_dept>/Scolarite/sco_exemple")
+@scodoc7func(context)
+def sco_exemple(etudid="NON"):
+    """Un exemple de fonction ScoDoc 7"""
+    return """<html>
+        <body><h1>ScoDoc 7 rules !</h1>
+        <p>etudid=%(etudid)s</p>
+        <p>g.scodoc_dept=%(scodoc_dept)s</p>
+        </body>
+        </html>
+        """ % {
+        "etudid": etudid,
+        "scodoc_dept": g.scodoc_dept,
+    }
+
+
+# En ScoDoc 7, on a souvent des vues qui en appellent d'autres
+# avec context.sco_exemple( etudid="E12" )
+@bp.route("/<scodoc_dept>/Scolarite/sco_exemple2")
+@login_required
+@scodoc7func(context)
+def sco_exemple2():
+    return "Exemple 2" + context.sco_exemple(etudid="deux")
+
+
+# Test avec un seul argument REQUEST positionnel
+@bp.route("/<scodoc_dept>/Scolarite/sco_get_version")
+@scodoc7func(context)
+def sco_get_version(REQUEST):
+    return sco_core.sco_get_version(REQUEST)
+
+
+# Fonction ressemblant à une méthode Zope protégée
+@bp.route("/<scodoc_dept>/Scolarite/sco_test_view")
+@scodoc7func(context)
+@permission_required(Permission.ScoView)
+def sco_test_view(REQUEST=None):
+    return """Vous avez vu sco_test_view !"""

app/views/scolar.py

@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+"""
+Module scolar: issu de ScoDoc7 / ZScolar.py
+
+Emmanuel Viennet, 2021
+"""
+
+from flask import g
+from flask import current_app
+
+from app.decorators import (
+    scodoc7func,
+    ScoDoc7Context,
+    permission_required,
+    admin_required,
+    login_required,
+)
+from app.auth.models import Permission
+
+from app.views import scolar_bp as bp
+
+context = ScoDoc7Context(globals())
+
+
+@bp.route("/about")
+@scodoc7func(context)
+def about():
+    """Un exemple de fonction ScoDoc 7 dans ZScolar"""
+    return """<html>
+        <body><h1>ScoDoc 7 ZScolar !</h1>
+        <p>ZScolar ScoDoc 8</p>
+        <p>g.scodoc_dept=%(scodoc_dept)s</p>
+        </body>
+        </html>
+        """ % {
+        "scodoc_dept": g.scodoc_dept,
+    }

config.py

@@ -7,12 +7,13 @@ BASEDIR = os.path.abspath(os.path.dirname(__file__))
 load_dotenv(os.path.join(BASEDIR, ".env"))
 
 
-class Config(object):
+class ConfigClass(object):
-    """General configution. Mostly loaded from environment via .env"""
+    """General configuration. Mostly loaded from environment via .env"""
 
     SECRET_KEY = os.environ.get("SECRET_KEY") or "un-grand-secret-introuvable"
     SQLALCHEMY_DATABASE_URI = (
-        os.environ.get("DATABASE_URL") or "postgresql://scodoc@localhost:5432/SCO8USERS"
+        os.environ.get("USERS_DATABASE_URI")
+        or "postgresql://scodoc@localhost:5432/SCO8USERS"
     )
     SQLALCHEMY_TRACK_MODIFICATIONS = False
     LOG_TO_STDOUT = os.environ.get("LOG_TO_STDOUT")
@@ -29,3 +30,14 @@ class Config(object):
     BOOTSTRAP_SERVE_LOCAL = os.environ.get("BOOTSTRAP_SERVE_LOCAL")
     # for ScoDoc 7 compat (à changer)
     INSTANCE_HOME = os.environ.get("INSTANCE_HOME", "/opt/scodoc")
+
+    # For legacy ScoDoc7 installs: postgresql user
+    SCODOC7_SQL_USER = os.environ.get("SCODOC7_SQL_USER", "www-data")
+    DEFAULT_SQL_PORT = os.environ.get("DEFAULT_SQL_PORT", "5432")
+
+    def __init__(self):
+        """Used to build some config variable at startup time"""
+        self.SCODOC_VAR_DIR = os.path.join(self.INSTANCE_HOME, "var", "scodoc")
+
+
+Config = ConfigClass()

requirements.txt

@@ -15,6 +15,7 @@ Flask-Migrate==2.7.0
 Flask-Moment==0.11.0
 Flask-SQLAlchemy==2.4.4
 Flask-WTF==0.14.3
+icalendar==4.0.7
 idna==2.10
 itsdangerous==1.1.0
 jaxml==3.2
@@ -24,13 +25,17 @@ MarkupSafe==1.1.1
 Pillow==6.2.2
 pkg-resources==0.0.0
 psycopg2==2.8.6
+pyExcelerator==0.6.3a0
 PyJWT==1.7.1
+PyRSS2Gen==1.1
 python-dateutil==2.8.1
 python-dotenv==0.15.0
 python-editor==1.0.4
 pytz==2021.1
+reportlab==3.5.59
 six==1.15.0
 SQLAlchemy==1.3.23
+stripogram==1.5
 typing==3.7.4.3
 visitor==0.1.3
 Werkzeug==1.0.1

scodoc_manager.py

@@ -0,0 +1,70 @@
+# -*- coding: UTF-8 -*
+
+"""
+Manage departments, databases.
+
+Each departement `X` has its own database, `SCOX` 
+and a small configuration file `.../config/depts/X.cfg`
+containing the database URI
+Old ScoDoc7 installs config files contained `dbname=SCOX`
+which translates as
+"postgresql://<user>@localhost:5432/<dbname>"
+<user> being given by `SCODOC7_SQL_USER` env variable.
+"""
+import os
+import re
+import glob
+
+from config import Config
+
+from app.scodoc.sco_exceptions import ScoConfigurationError
+
+
+class ScoDeptDescription:
+    def __init__(self, filename):
+        """Read dept description from dept file"""
+        if os.path.split(filename)[1][-4:] != ".cfg":
+            raise ScoConfigurationError("Invalid dept config filename: %s" % filename)
+        self.dept_id = os.path.split(filename)[1][:-4]
+        if not self.dept_id:
+            raise ScoConfigurationError("Invalid dept config filename: %s" % filename)
+        try:
+            db_uri = open(filename).read().strip()
+        except:
+            raise ScoConfigurationError("Department config file missing: %s" % filename)
+        m = re.match(r"dbname=SCO([a-zA-Z0-9]+$)", db_uri)
+        if m:
+            # ScoDoc7 backward compat
+            dept = m.group(1)  # unused in ScoDoc7
+            db_name = "SCO" + self.dept_id.upper()
+            db_uri = "postgresql://%(db_user)s@localhost:%(db_port)s/%(db_name)s" % {
+                "db_user": Config.SCODOC7_SQL_USER,
+                "db_name": db_name,
+                "db_port": Config.DEFAULT_SQL_PORT,
+            }
+        self.db_uri = db_uri
+
+
+class ScoDocManager:
+    def __init__(self):
+        filenames = glob.glob(Config.SCODOC_VAR_DIR + "/config/depts/*.cfg")
+        descr_list = [ScoDeptDescription(f) for f in filenames]
+        self.dept_descriptions = {d.dept_id: d for d in descr_list}
+
+    def get_dept_db_uri(self, dept_id):
+        "DB URI for this dept id"
+        return self.dept_descriptions[dept_id].db_uri
+
+    def get_dept_ids(self):
+        "get (unsorted) dept ids"
+        return [d.dept_id for d in descr_list]
+
+    def get_db_uri(self):
+        """
+        Returns DB URI for the "current" departement.
+        Replaces ScoDoc7 GetDBConnexionString()
+        """
+        return self.get_dept_db_uri(g.scodoc_dept)
+
+
+sco_mgr = ScoDocManager()