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annotate antispam/utils.py @ 780:feafa1c3d356

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Issue #61, delete user photos when deactivating spammers.
author Brian Neal <bgneal@gmail.com>
date Sun, 04 May 2014 15:18:26 -0500
parents 08d905e38a86
children 9e803323a0d0
rev   line source
bgneal@214 1 """Antispam utility functions other apps can use."""
bgneal@215 2 import datetime
bgneal@215 3 import logging
bgneal@215 4 import textwrap
bgneal@215 5
bgneal@214 6 from django.core.cache import cache
bgneal@214 7
bgneal@214 8 from antispam import SPAM_PHRASE_KEY
bgneal@214 9 from antispam.models import SpamPhrase
bgneal@215 10 from core.functions import email_admins
bgneal@563 11 from bio.models import STA_SUSPENDED, STA_SPAMMER
bgneal@563 12 from comments.models import Comment
bgneal@563 13 from forums.tools import delete_user_posts
bgneal@780 14 from user_photos.s3 import delete_photos
bgneal@214 15
bgneal@214 16
bgneal@214 17 def contains_spam(s):
bgneal@214 18 """This function returns True if the supplied string s contains any spam
bgneal@214 19 phrases and False otherwise.
bgneal@214 20 """
bgneal@214 21 phrases = _get_spam_phrases()
bgneal@215 22 s = s.lower()
bgneal@214 23 for spam in phrases:
bgneal@214 24 if spam in s:
bgneal@214 25 return True
bgneal@214 26
bgneal@214 27 return False
bgneal@214 28
bgneal@214 29
bgneal@215 30 def spam_check(request, content):
bgneal@215 31 """This function checks the supplied content for spam if the user from the
bgneal@215 32 supplied request is a stranger (new to the site). If spam is found, the
bgneal@215 33 function makes a log entry, emails the admins, suspends the user's account
bgneal@215 34 and returns True. If spam is not found, False is returned.
bgneal@215 35 It is assumed that request.user is an authenticated user and thus has a
bgneal@215 36 user profile.
bgneal@215 37 """
bgneal@215 38 user = request.user
bgneal@215 39 if user.get_profile().is_stranger() and contains_spam(content):
bgneal@215 40
bgneal@215 41 ip = request.META.get('REMOTE_ADDR', "unknown")
bgneal@215 42
bgneal@215 43 msg = textwrap.dedent("""\
bgneal@215 44 SPAM FILTER TRIPPED by %s
bgneal@215 45 PATH: %s
bgneal@215 46 IP: %s
bgneal@215 47 Message:
bgneal@215 48 %s
bgneal@215 49 """ % (user.username, request.path, ip, content))
bgneal@215 50
bgneal@215 51 logging.info(msg)
bgneal@215 52 email_admins("SPAM FILTER TRIPPED BY %s" % user.username, msg)
bgneal@215 53 suspend_user(user)
bgneal@215 54 return True
bgneal@215 55
bgneal@215 56 return False
bgneal@215 57
bgneal@215 58
bgneal@215 59 def suspend_user(user):
bgneal@215 60 """This function marks the user as suspended."""
bgneal@215 61 user.is_active = False
bgneal@215 62 user.save()
bgneal@215 63 profile = user.get_profile()
bgneal@215 64 profile.status = STA_SUSPENDED
bgneal@215 65 profile.status_date = datetime.datetime.now()
bgneal@562 66 profile.save(content_update=False)
bgneal@563 67 logging.info("User suspended: %s", user.username)
bgneal@563 68
bgneal@563 69
bgneal@563 70 def deactivate_spammer(user):
bgneal@563 71 """
bgneal@563 72 This function deactivate's the user, marks them as a spammer, then
bgneal@563 73 deletes the user's comments and forum posts. The spammer's profile is
bgneal@563 74 cleared so any spam links won't show up anymore.
bgneal@563 75
bgneal@563 76 """
bgneal@563 77 user.is_active = False
bgneal@563 78 user.save()
bgneal@563 79
bgneal@563 80 profile = user.get_profile()
bgneal@563 81 profile.status = STA_SPAMMER
bgneal@563 82 profile.status_date = datetime.datetime.now()
bgneal@625 83 profile.reset()
bgneal@608 84 if profile.avatar:
bgneal@608 85 profile.avatar.delete(save=False)
bgneal@563 86 profile.save()
bgneal@563 87
bgneal@625 88 # delete comments & forum posts
bgneal@563 89 Comment.objects.filter(user=user).delete()
bgneal@563 90 delete_user_posts(user)
bgneal@563 91
bgneal@625 92 # delete elsewhere links
bgneal@625 93 user.social_network_profiles.all().delete()
bgneal@625 94 user.instant_messenger_profiles.all().delete()
bgneal@625 95 user.website_profiles.all().delete()
bgneal@625 96
bgneal@625 97 # delete shouts
bgneal@625 98 user.shout_set.all().delete()
bgneal@625 99
bgneal@780 100 # delete any uploaded photos
bgneal@780 101 photos = user.uploaded_photos.all()
bgneal@780 102 if len(photos):
bgneal@780 103 delete_photos(photos)
bgneal@780 104 photos.delete()
bgneal@780 105
bgneal@563 106 logging.info("User deactivated for spam: %s", user.username)
bgneal@316 107
bgneal@215 108
bgneal@214 109 def _get_spam_phrases():
bgneal@563 110 """
bgneal@563 111 This function returns the current list of spam phrase strings.
bgneal@214 112 The strings are cached to avoid hitting the database.
bgneal@563 113
bgneal@214 114 """
bgneal@214 115 phrases = cache.get(SPAM_PHRASE_KEY)
bgneal@214 116 if phrases:
bgneal@214 117 return phrases
bgneal@214 118
bgneal@214 119 phrases = SpamPhrase.objects.values_list('phrase', flat=True)
bgneal@214 120 cache.set(SPAM_PHRASE_KEY, phrases)
bgneal@214 121 return phrases