Merge branch 'derniere_connexion' into 'master'

Ajout de derniere_connexion.py

See merge request nounous/re2o!9

users/management/commands/derniere_connexion.py

@@ -0,0 +1,80 @@
+# ⁻*- mode: python; coding: utf-8 -*-
+# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
+# se veut agnostique au réseau considéré, de manière à être installable en
+# quelques clics.
+#
+# Copyright © 2018  Benjamin Graillot
+# 
+# Copyright © 2013-2015 Raphaël-David Lasseri <lasseri@crans.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import sys
+import re
+from datetime import datetime
+
+from django.core.management.base import BaseCommand, CommandError
+from django.utils.timezone import make_aware
+
+from users.models import User
+
+# Une liste d'expressions régulières à chercher dans les logs.
+# Elles doivent contenir un groupe 'date' et un groupe 'user'.
+# Pour le CAS on prend comme entrée cat ~/cas.log | grep -B 2 -A 2 "ACTION: AUTHENTICATION_SUCCESS"| grep 'WHEN\|WHO'|sed 'N;s/\n/ /'
+COMPILED_REGEX = map(re.compile, [
+    r'^(?P<date>\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}).*(?:'r'dovecot.*Login: user=<|'r'sshd.*Accepted.*for 'r')(?P<user>[^ >]+).*$',
+    r'^(?P<date>.*) LOGIN INFO User logged in : (?P<user>.*)',
+    r'WHO: \[username: (?P<user>.*)\] WHEN: (?P<date>.* CET .*)',
+    r'WHO: \[username: (?P<user>.*)\] WHEN: (?P<date>.* CEST .*)'
+])
+
+# Les formats de date en strftime associés aux expressions ci-dessus.
+DATE_FORMATS = [
+    "%Y-%m-%dT%H:%M:%S",
+    "%d/%b/%Y:%H:%M:%S",
+    "%a %b %d CET %H:%M:%S%Y",
+    "%a %b %d CEST %H:%M:%S%Y"
+]
+
+class Command(BaseCommand):
+    help = 'Update the time of the latest connection for users by matching stdin against a set of regular expressions'
+
+    def handle(self, *args, **options):
+
+        def parse_logs(logfile):
+            """
+            Parse les logs sur l'entrée standard et rempli un dictionnaire
+            ayant pour clef le pseudo de l'adherent
+            """
+            global COMPILED_REGEX, DATE_FORMATS
+
+            parsed_log = {}
+            for line in logfile:
+                for i, regex in enumerate(COMPILED_REGEX):
+                    m = regex.match(line)
+                    if m:
+                        parsed_log[m.group('user')] = make_aware(datetime.strptime(m.group('date'), DATE_FORMATS[i]))
+            return parsed_log
+
+        parsed_log = parse_logs(sys.stdin)
+
+        for pseudo in parsed_log:
+            for user in User.objects.filter(pseudo=pseudo):
+                last_login = parsed_log.get(user.pseudo, user.last_login)
+                if not user.last_login:
+                    user.last_login = last_login
+                elif last_login > user.last_login:
+                    user.last_login = last_login
+                user.save()