mirror of
https://gitlab.crans.org/bde/nk20
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125 lines
3.5 KiB
Python
125 lines
3.5 KiB
Python
# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
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import inspect
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from django.contrib.contenttypes.models import ContentType
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from django.core import serializers
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from django.db.models.signals import pre_save, post_save, post_delete
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from django.dispatch import receiver
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from .models import Changelog
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def get_request_in_signal(sender):
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req = None
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for entry in reversed(inspect.stack()):
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try:
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req = entry[0].f_locals['request']
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# Check if there is a user
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# noinspection PyStatementEffect
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req.user
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break
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except:
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pass
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if not req:
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print("WARNING: Attempt to save " + str(sender) + " with no user")
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return req
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def get_user_and_ip(sender):
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req = get_request_in_signal(sender)
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try:
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user = req.user
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if 'HTTP_X_FORWARDED_FOR' in req.META:
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ip = req.META.get('HTTP_X_FORWARDED_FOR')
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else:
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ip = req.META.get('REMOTE_ADDR')
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except:
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user = None
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ip = None
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return user, ip
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EXCLUDED = [
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'admin.logentry',
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'authtoken.token',
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'cas_server.user',
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'cas_server.userattributes',
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'contenttypes.contenttype',
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'logs.changelog',
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'migrations.migration',
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'note.noteuser',
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'note.noteclub',
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'note.notespecial',
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'sessions.session',
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'reversion.revision',
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'reversion.version',
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]
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@receiver(pre_save)
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def pre_save_object(sender, instance, **kwargs):
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qs = sender.objects.filter(pk=instance.pk).all()
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if qs.exists():
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instance._previous = qs.get()
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else:
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instance._previous = None
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@receiver(post_save)
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def save_object(sender, instance, **kwargs):
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# noinspection PyProtectedMember
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if instance._meta.label_lower in EXCLUDED:
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return
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previous = instance._previous
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user, ip = get_user_and_ip(sender)
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from django.contrib.auth.models import AnonymousUser
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if isinstance(user, AnonymousUser):
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user = None
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if user is not None and instance._meta.label_lower == "auth.user" and previous:
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# Don't save last login modifications
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if instance.last_login != previous.last_login:
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return
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previous_json = serializers.serialize('json', [previous, ])[1:-1] if previous else None
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instance_json = serializers.serialize('json', [instance, ])[1:-1]
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if previous_json == instance_json:
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# No modification
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return
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Changelog.objects.create(user=user,
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ip=ip,
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model=ContentType.objects.get_for_model(instance),
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instance_pk=instance.pk,
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previous=previous_json,
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data=instance_json,
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action=("edit" if previous else "create")
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).save()
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@receiver(post_delete)
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def delete_object(sender, instance, **kwargs):
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# noinspection PyProtectedMember
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if instance._meta.label_lower in EXCLUDED:
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return
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user, ip = get_user_and_ip(sender)
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instance_json = serializers.serialize('json', [instance, ])[1:-1]
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Changelog.objects.create(user=user,
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ip=ip,
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model=ContentType.objects.get_for_model(instance),
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instance_pk=instance.pk,
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previous=instance_json,
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data=None,
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action="delete"
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).save()
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