예제 #1
0
    def _refresh_visitor(self, user, request, visit_time):
        # A Visitor row is unique by session_key
        session_key = request.session.session_key

        try:
            visitor = Visitor.objects.get(pk=session_key)
        except Visitor.DoesNotExist:
            # Log the ip address. Start time is managed via the field
            # `default` value
            ip_address = get_ip_address(request)
            visitor = Visitor(pk=session_key, ip_address=ip_address)

        # Update the user field if the visitor user is not set. This
        # implies authentication has occured on this request and now
        # the user is object exists. Check using `user_id` to prevent
        # a database hit.
        if user and not visitor.user_id:
            visitor.user_id = user.id

        # update some session expiration details
        visitor.expiry_age = request.session.get_expiry_age()
        visitor.expiry_time = request.session.get_expiry_date()

        # grab the latest User-Agent and store it
        user_agent = request.META.get('HTTP_USER_AGENT', None)
        if user_agent:
            visitor.user_agent = smart_text(user_agent,
                                            encoding='latin-1',
                                            errors='ignore')

        # grab the source param and store it
        source = request.GET.get('source', None)
        if source:
            visitor.source = source

        # grab the medium param and store it
        medium = request.GET.get('medium', None)
        if medium:
            visitor.medium = medium

        time_on_site = 0
        if visitor.start_time:
            time_on_site = total_seconds(visit_time - visitor.start_time)
        visitor.time_on_site = int(time_on_site)

        try:
            with transaction.atomic():
                visitor.save()
        except IntegrityError:
            # there is a small chance a second response has saved this
            # Visitor already and a second save() at the same time (having
            # failed to UPDATE anything) will attempt to INSERT the same
            # session key (pk) again causing an IntegrityError
            # If this happens we'll just grab the "winner" and use that!
            visitor = Visitor.objects.get(pk=session_key)

        return visitor
예제 #2
0
    def _refresh_visitor(self, user, request, visit_time):
        # A Visitor row is unique by session_key
        session_key = request.session.session_key

        try:
            visitor = Visitor.objects.get(pk=session_key)
        except Visitor.DoesNotExist:
            # Log the ip address. Start time is managed via the field
            # `default` value
            ip_address = get_ip_address(request)
            visitor = Visitor(pk=session_key, ip_address=ip_address)

        # Update the user field if the visitor user is not set. This
        # implies authentication has occured on this request and now
        # the user is object exists. Check using `user_id` to prevent
        # a database hit.
        if user and not visitor.user_id:
            visitor.user_id = user.id

        # update some session expiration details
        visitor.expiry_age = request.session.get_expiry_age()
        visitor.expiry_time = request.session.get_expiry_date()

        # grab the latest User-Agent and store it
        user_agent = request.META.get('HTTP_USER_AGENT', None)
        if user_agent:
            visitor.user_agent = smart_text(
                user_agent, encoding='latin-1', errors='ignore')

        time_on_site = 0
        if visitor.start_time:
            time_on_site = total_seconds(visit_time - visitor.start_time)
        visitor.time_on_site = int(time_on_site)

        try:
            with transaction.atomic():
                visitor.save()
        except IntegrityError:
            # there is a small chance a second response has saved this
            # Visitor already and a second save() at the same time (having
            # failed to UPDATE anything) will attempt to INSERT the same
            # session key (pk) again causing an IntegrityError
            # If this happens we'll just grab the "winner" and use that!
            visitor = Visitor.objects.get(pk=session_key)

        return visitor
예제 #3
0
    def _refresh_visitor(self, user, request, visit_time):
        # A Visitor row is unique by session_key
        session_key = request.session.session_key

        try:
            visitor = Visitor.objects.get(pk=session_key)
        except Visitor.DoesNotExist:
            # Log the ip address. Start time is managed via the field
            # `default` value
            ip_address = get_ip_address(request)
            visitor = Visitor(pk=session_key, ip_address=ip_address)

        # Update the user field if the visitor user is not set. This
        # implies authentication has occured on this request and now
        # the user is object exists. Check using `user_id` to prevent
        # a database hit.
        if user and not visitor.user_id:
            visitor.user = user

        # update some session expiration details
        visitor.expiry_age = request.session.get_expiry_age()
        visitor.expiry_time = request.session.get_expiry_date()

        # grab the latest User-Agent and store it
        user_agent = request.META.get('HTTP_USER_AGENT', None)
        if user_agent:
            visitor.user_agent = smart_text(user_agent,
                                            encoding='latin-1',
                                            errors='ignore')

        time_on_site = 0
        if visitor.start_time:
            time_on_site = total_seconds(visit_time - visitor.start_time)
        visitor.time_on_site = int(time_on_site)

        visitor.save()
        return visitor
예제 #4
0
    def _refresh_visitor(self, user, request, visit_time):
        # A Visitor row is unique by session_key
        session_key = request.session.session_key

        try:
            visitor = Visitor.objects.get(pk=session_key)
        except Visitor.DoesNotExist:
            # Log the ip address. Start time is managed via the field
            # `default` value
            ip_address = get_ip_address(request)
            visitor = Visitor(pk=session_key, ip_address=ip_address)

        # Update the user field if the visitor user is not set. This
        # implies authentication has occured on this request and now
        # the user is object exists. Check using `user_id` to prevent
        # a database hit.
        if user and not visitor.user_id:
            visitor.user = user

        # update some session expiration details
        visitor.expiry_age = request.session.get_expiry_age()
        visitor.expiry_time = request.session.get_expiry_date()

        # grab the latest User-Agent and store it
        user_agent = request.META.get('HTTP_USER_AGENT', None)
        if user_agent:
            visitor.user_agent = smart_text(
                user_agent, encoding='latin-1', errors='ignore')

        time_on_site = 0
        if visitor.start_time:
            time_on_site = total_seconds(visit_time - visitor.start_time)
        visitor.time_on_site = int(time_on_site)

        visitor.save()
        return visitor
예제 #5
0
    def process_request(self, request):
        # don't process AJAX requests
        if request.is_ajax(): return

        # create some useful variables
        ip_address = utils.get_ip(request)
        user_agent = unicode(request.META.get('HTTP_USER_AGENT', '')[:255], errors='ignore')

        # retrieve untracked user agents from cache
        ua_key = '_tracking_untracked_uas'
        untracked = cache.get(ua_key)
        if untracked is None:
            log.info('Updating untracked user agent cache')
            untracked = UntrackedUserAgent.objects.all()
            cache.set(ua_key, untracked, 3600)

        # see if the user agent is not supposed to be tracked
        for ua in untracked:
            # if the keyword is found in the user agent, stop tracking
            if user_agent.find(ua.keyword) != -1:
                log.debug('Not tracking UA "%s" because of keyword: %s' % (user_agent, ua.keyword))
                return

        if hasattr(request, 'session') and request.session.session_key:
            # use the current session key if we can
            session_key = request.session.session_key
        else:
            # otherwise just fake a session key
            session_key = '%s:%s' % (ip_address, user_agent)
            session_key = session_key[:40]

        # ensure that the request.path does not begin with any of the prefixes
        for prefix in self.prefixes:
            if request.path.startswith(prefix):
                log.debug('Not tracking request to: %s' % request.path)
                return

        # if we get here, the URL needs to be tracked
        # determine what time it is
        now = datetime.now()

        attrs = {
            'session_key': session_key,
            'ip_address': ip_address
        }

        # for some reason, Visitor.objects.get_or_create was not working here
        try:
            visitor = Visitor.objects.get(**attrs)
        except Visitor.DoesNotExist:
            # see if there's a visitor with the same IP and user agent
            # within the last 5 minutes
            cutoff = now - timedelta(minutes=5)
            visitors = Visitor.objects.filter(
                ip_address=ip_address,
                user_agent=user_agent,
                last_update__gte=cutoff
            )

            if len(visitors):
                visitor = visitors[0]
                visitor.session_key = session_key
                log.debug('Using existing visitor for IP %s / UA %s: %s' % (ip_address, user_agent, visitor.id))
            else:
                # it's probably safe to assume that the visitor is brand new
                visitor = Visitor(**attrs)
                log.debug('Created a new visitor: %s' % attrs)
        except:
            return

        # determine whether or not the user is logged in
        user = request.user
        if isinstance(user, AnonymousUser):
            user = None

        # update the tracking information
        visitor.user = user
        visitor.user_agent = user_agent

        # if the visitor record is new, or the visitor hasn't been here for
        # at least an hour, update their referrer URL
        one_hour_ago = now - timedelta(hours=1)
        if not visitor.last_update or visitor.last_update <= one_hour_ago:
            visitor.referrer = utils.u_clean(request.META.get('HTTP_REFERER', 'unknown')[:255])

            # reset the number of pages they've been to
            visitor.page_views = 0
            visitor.session_start = now

        visitor.url = request.path
        visitor.page_views += 1
        visitor.last_update = now
        try:
            visitor.save()
        except DatabaseError:
            log.error('There was a problem saving visitor information:\n%s\n\n%s' % (traceback.format_exc(), locals()))
예제 #6
0
    def process_request(self, request):
        # don't process AJAX requests
        if request.is_ajax(): return

        # create some useful variables
        ip_address = utils.get_ip(request)
        user_agent = unicode(request.META.get('HTTP_USER_AGENT', '')[:255], errors='ignore')

        # retrieve untracked user agents from cache
        ua_key = '_tracking_untracked_uas'
        untracked = cache.get(ua_key)
        if untracked is None:
            log.info('Updating untracked user agent cache')
            untracked = UntrackedUserAgent.objects.all()
            cache.set(ua_key, untracked, 3600)

        # see if the user agent is not supposed to be tracked
        for ua in untracked:
            # if the keyword is found in the user agent, stop tracking
            if user_agent.find(ua.keyword) != -1:
                log.debug('Not tracking UA "%s" because of keyword: %s' % (user_agent, ua.keyword))
                return

        if hasattr(request, 'session') and request.session.session_key:
            # use the current session key if we can
            session_key = request.session.session_key
        else:
            # otherwise just fake a session key
            session_key = '%s:%s' % (ip_address, user_agent)
            session_key = session_key[:40]

        # ensure that the request.path does not begin with any of the prefixes
        for prefix in self.prefixes:
            if request.path.startswith(prefix):
                log.debug('Not tracking request to: %s' % request.path)
                return

        # if we get here, the URL needs to be tracked
        # determine what time it is
        now = right_now()

        attrs = {
            'session_key': session_key,
            'ip_address': ip_address
        }

        # for some reason, Visitor.objects.get_or_create was not working here
        try:
            visitor = Visitor.objects.get(**attrs)
        except Visitor.DoesNotExist:
            # see if there's a visitor with the same IP and user agent
            # within the last 5 minutes
            cutoff = now - timedelta(minutes=5)
            visitors = Visitor.objects.filter(
                ip_address=ip_address,
                user_agent=user_agent,
                last_update__gte=cutoff
            )

            if len(visitors):
                visitor = visitors[0]
                visitor.session_key = session_key
                log.debug('Using existing visitor for IP %s / UA %s: %s' % (ip_address, user_agent, visitor.id))
            else:
                # it's probably safe to assume that the visitor is brand new
                visitor = Visitor(**attrs)
                log.debug('Created a new visitor: %s' % attrs)
        except:
            return

        # determine whether or not the user is logged in
        user = request.user
        if isinstance(user, AnonymousUser):
            user = None

        # update the tracking information
        visitor.user = user
        visitor.user_agent = user_agent

        # if the visitor record is new, or the visitor hasn't been here for
        # at least an hour, update their referrer URL
        one_hour_ago = now - timedelta(hours=1)
        if not visitor.last_update or visitor.last_update <= one_hour_ago:
            visitor.referrer = utils.u_clean(request.META.get('HTTP_REFERER', 'unknown')[:255])

            # reset the number of pages they've been to
            visitor.page_views = 0
            visitor.session_start = now

        visitor.url = request.path
        visitor.page_views += 1
        visitor.last_update = now
        try:
            visitor.save()
        except DatabaseError:
            log.error('There was a problem saving visitor information:\n%s\n\n%s' % (traceback.format_exc(), locals()))
예제 #7
0
    def process_request(self, request):
        # don't process AJAX requests
        if request.is_ajax(): return

        # create some useful variables
        ip_address = utils.get_ip(request)
        user_agent = request.META.get('HTTP_USER_AGENT', '')[:255]

        # see if the user agent is not supposed to be tracked
        for ua in UntrackedUserAgent.objects.all():
            # if the keyword is found in the user agent, stop tracking
            if str(user_agent).find(ua.keyword) != -1:
                return

        if hasattr(request, 'session'):
            # use the current session key if we can
            session_key = request.session.session_key
        else:
            # otherwise just fake a session key
            session_key = '%s:%s' % (ip_address, user_agent)

        prefixes = utils.get_untracked_prefixes()

        # don't track media file requests
        if settings.MEDIA_URL and settings.MEDIA_URL != '/':
            prefixes.append(settings.MEDIA_URL)
        if settings.ADMIN_MEDIA_PREFIX:
            prefixes.append(settings.ADMIN_MEDIA_PREFIX)

        try:
            # finally, don't track requests to the tracker update pages
            prefixes.append(reverse('tracking-refresh-active-users'))
        except NoReverseMatch:
            # django-tracking hasn't been included in the URLconf if we get here
            pass

        # ensure that the request.path does not begin with any of the prefixes
        for prefix in prefixes:
            if request.path.startswith(prefix):
                return

        # if we get here, the URL needs to be tracked
        # determine what time it is
        now = datetime.now()

        attrs = {
                    'session_key': session_key,
                    'ip_address': ip_address
                }

        # for some reason, Visitor.objects.get_or_create was not working here
        try:
            visitor = Visitor.objects.get(**attrs)
        except Visitor.DoesNotExist:
            # see if there's a visitor with the same IP and user agent
            # within the last 5 minutes
            cutoff = now - timedelta(minutes=5)
            filter_params = {
                    'ip_address': ip_address,
                    'user_agent': user_agent,
                    'last_update__gte': cutoff
                }
            try:
                visitor = Visitor.objects.get(**filter_params)
                visitor.session_key = session_key
            except Visitor.MultipleObjectsReturned:
                # just get the first match
                visitor = Visitor.objects.filter(**filter_params)[0]
                visitor.session_key = session_key
            except Visitor.DoesNotExist:
                # it's probably safe to assume that the visitor is brand new
                visitor = Visitor(**attrs)
        except:
            return

        # determine whether or not the user is logged in
        user = request.user
        if isinstance(user, AnonymousUser):
            user = None

        # update the tracking information
        visitor.user = user
        visitor.user_agent = user_agent

        # if the visitor record is new, or the visitor hasn't been here for
        # at least an hour, update their referrer URL
        one_hour_ago = now - timedelta(hours=1)
        if not visitor.last_update or visitor.last_update <= one_hour_ago:
            visitor.referrer = request.META.get('HTTP_REFERER', 'unknown')[:255]

            # reset the number of pages they've been to
            visitor.page_views = 0
            visitor.session_start = now

        visitor.url = request.path
        visitor.page_views += 1
        visitor.last_update = now
        visitor.save()
예제 #8
0
    def process_request(self, request):
        # don't process AJAX requests
        if request.is_ajax(): return

        # create some useful variables
        ip_address = utils.get_ip(request)
        user_agent = request.META.get('HTTP_USER_AGENT', '')

	if utils.user_agent_is_untracked( user_agent ):
          log.debug('Not tracking UA "%s" because of keyword: %s' % (user_agent, ua.keyword))
          return

        if hasattr(request, 'session'):
            # use the current session key if we can
            session_key = request.session.session_key
        else:
            # otherwise just fake a session key
            session_key = md5( '%s:%s' % ( ip_address, user_agent ) ).hexdigest()

        # ensure that the request.path does not begin with any of the prefixes
        for prefix in NO_TRACKING_PREFIXES:
            if request.path.startswith(prefix):
                log.debug('Not tracking request to: %s' % request.path)
                return

        # if we get here, the URL needs to be tracked
        # determine what time it is
        now = datetime.now()

        attrs = {
            'session_key': session_key,
            'ip_address': ip_address
        }

        # for some reason, Visitor.objects.get_or_create was not working here
        try:
            visitor = Visitor.objects.get(**attrs)
        except Visitor.DoesNotExist:
            # see if there's a visitor with the same IP and user agent
            # within the last 5 minutes
            cutoff = now - timedelta(minutes=5)
            visitors = Visitor.objects.filter(
                ip_address=ip_address,
                user_agent=user_agent[:255],
                last_update__gte=cutoff
            )

            if len(visitors):
                visitor = visitors[0]
                visitor.session_key = session_key
                log.debug('Using existing visitor for IP %s / UA %s: %s' % (ip_address, user_agent, visitor.id))
            else:
                # it's probably safe to assume that the visitor is brand new
                visitor = Visitor(**attrs)
                log.debug('Created a new visitor: %s' % attrs)
        except:
            return

        # determine whether or not the user is logged in
        user = request.user
        if isinstance(user, AnonymousUser):
            user = None

        # update the tracking information
        visitor.user = user
        visitor.user_agent = user_agent[:255]

        # if the visitor record is new, or the visitor hasn't been here for
        # at least an hour, update their referrer URL
        if not visitor.last_update or visitor.last_update <= ( now - timedelta( hours = 1 ) ) :
            visitor.referrer = utils.u_clean(request.META.get('HTTP_REFERER', 'unknown')[:255])

            # reset the number of pages they've been to
            visitor.page_views = 0
            visitor.session_start = now

        visitor.url = request.path[:255]
        visitor.page_views += 1
        visitor.last_update = now
        visitor.save()
예제 #9
0
    def process_request(self, request):
        # don't process AJAX requests
        if request.is_ajax(): return

        # create some useful variables
        ip_address = utils.get_ip(request)
        user_agent = request.META.get('HTTP_USER_AGENT', '')[:255]

        # retrieve untracked user agents from cache
        ua_key = '_tracking_untracked_uas'
        untracked = cache.get(ua_key)
        if untracked is None:
            log.info('Updating untracked user agent cache')
            untracked = list(UntrackedUserAgent.objects.all())
            cache.set(ua_key, untracked, 3600)

        # see if the user agent is not supposed to be tracked
        for ua in untracked:
            # if the keyword is found in the user agent, stop tracking
            if unicode(user_agent, errors='ignore').find(ua.keyword) != -1:
                log.debug('Not tracking UA "%s" because of keyword: %s' % (user_agent, ua.keyword))
                return

        if hasattr(request, 'session'):
            if not request.session.session_key:
                request.session.save()
            # use the current session key if we can
            session_key = request.session.session_key
        else:
            # otherwise just fake a session key
            session_key = '%s:%s' % (ip_address, user_agent)

        # ensure that the request.path does not begin with any of the prefixes
        for prefix in self.prefixes:
            if request.path.startswith(prefix):
                log.debug('Not tracking request to: %s' % request.path)
                return

        # if we get here, the URL needs to be tracked
        # determine what time it is
        now = datetime.now()

        # Attributes we use when creating a new user
        new_attrs = {
            'session_key': session_key,
            'ip_address': ip_address
        }

        # If we have a visitor_id cookie, use it
        visitor_id = request.COOKIES.get('visitor_id')

        if visitor_id:
            attrs = {'id': visitor_id}
        else:
            attrs = new_attrs

        # for some reason, Visitor.objects.get_or_create was not working here
        try:
            visitor = Visitor.objects.get(**attrs)
        except Visitor.DoesNotExist:
            # add tracking ID to model if specified in the URL
            tid = request.GET.get('tid') or request.GET.get('fb_source')
            if tid:
                get = request.GET.copy()
                attrs['tid'] = tid
                request.GET = get

            visitor = Visitor(**new_attrs)
            log.debug('Created a new visitor: %s' % new_attrs)
        except:
            return

        # determine whether or not the user is logged in
        user = request.user
        if isinstance(user, AnonymousUser):
            user = None

        # update the tracking information
        visitor.user = user
        visitor.user_agent = user_agent

        # if the visitor record is new, update their referrer URL
        if not visitor.last_update:
            visitor.referrer = utils.u_clean(request.META.get('HTTP_REFERER', 'unknown')[:255])

            # reset the number of pages they've been to
            visitor.page_views = 0
            visitor.session_start = now

        visitor.url = request.path
        visitor.page_views += 1
        visitor.last_update = now
        try:
            visitor.save()
        except DatabaseError:
            log.error('There was a problem saving visitor information:\n%s\n\n%s' % (traceback.format_exc(), locals()))

        request.visitor = visitor
        request.session['visitor_id'] = visitor.pk
예제 #10
0
    def process_request(self, request):
        # don't process AJAX requests
        if request.is_ajax(): return

        # create some useful variables
        ip_address = utils.get_ip(request)
        #user_agent = unicode(request.META.get('HTTP_USER_AGENT', '')[:255], errors='ignore')
        user_agent = str(request.META.get('HTTP_USER_AGENT', '')[:255] )

        # retrieve untracked user agents from cache
        ua_key = '_tracking_untracked_uas'
        untracked = cache.get(ua_key)
        if untracked is None:
            log.info('Updating untracked user agent cache')
            untracked = UntrackedUserAgent.objects.all()
            cache.set(ua_key, untracked, 3600)

        # see if the user agent is not supposed to be tracked
        for ua in untracked:
            # if the keyword is found in the user agent, stop tracking
            if user_agent.find(ua.keyword) != -1:
                log.debug('Not tracking UA "%s" because of keyword: %s' % (user_agent, ua.keyword))
                return

        if hasattr(request, 'session') and request.session.session_key:
            # use the current session key if we can
            session_key = request.session.session_key
        else:
            # otherwise just fake a session key
            session_key = '%s:%s' % (ip_address, user_agent)
            session_key = session_key[:40]

        # ensure that the request.path does not begin with any of the prefixes
        for prefix in self.prefixes:
            if request.path.startswith(prefix):
                log.debug('Not tracking request to: %s' % request.path)
                return

        # if we get here, the URL needs to be tracked
        # determine what time it is
        now = timezone.now()

        attrs = {
            'session_key': session_key,
            'ip_address': ip_address
        }

        # for some reason, Visitor.objects.get_or_create was not working here
        try:
            visitor = Visitor.objects.get(**attrs)
        except Visitor.DoesNotExist:
            visitor = Visitor(**attrs)
            log.debug('Created a new visitor: %s' % attrs)
        except:
            return

        # determine whether or not the user is logged in
        user = request.user
        if isinstance(user, AnonymousUser):
            user = None

        # update the tracking information
        visitor.user = user
        visitor.user_agent = user_agent
        visitor.pv += 1
        """
        try:
            visitor.save()
        except DatabaseError:
            log.error('There was a problem saving visitor information:\n%s\n\n%s' % (traceback.format_exc(), locals()))
        """

        #visitor.url = request.path
        """
        pageview, created = PageView.objects.get_or_create(url=request.path, defaults={
            'visitor': visitor})
        pageview.url = request.path
        pageview.pv = pageview.pv + 1
        try:
            pageview.save()
        except DatabaseError:
            log.error('There was a problem saving visitor information:\n%s\n\n%s' % (traceback.format_exc(), locals()))
        """
        username = user.username if user else 'anonymous'
        log.info('time: {}, ip: {}, user: {}, url: {},'.format(now, ip_address, username, request.path))
예제 #11
0
 def process_request(self, request):
     try:
         # don't process AJAX requests
         if request.is_ajax():
             return
 
         # create some useful variables
         session_key = request.session.session_key
         ip_address = request.META.get('REMOTE_ADDR', '')
         user_agent = request.META.get('HTTP_USER_AGENT', '')
 
         # see if the user agent is not supposed to be tracked
         for ua in UntrackedUserAgent.objects.all():
             # if the keyword is found in the user agent, stop tracking
             if str(user_agent).find(ua.keyword) != -1:
                 return
 
         prefixes = utils.get_untracked_prefixes()
         # don't track media files
         prefixes.append(settings.MEDIA_URL)
         prefixes.append(settings.ADMIN_MEDIA_PREFIX)
 
         # ensure that the request.path does not begin with any of the prefixes
         validURL = True
         for prefix in prefixes:
             if request.path.startswith(prefix):
                 validURL = False
                 break
 
         # if the URL needs to be tracked, track it!
         if validURL:
             # determine what time it is
             now = datetime.now()
 
             attrs = {
                         'session_key': session_key,
                         'ip_address': ip_address
                     }
 
             # for some reason, Visitor.objects.get_or_create was not working here
             try:
                 visitor = Visitor.objects.get(**attrs)
             except Visitor.DoesNotExist:
                 try:
                     # see if there's a visitor with the same IP and user agent
                     # within the last 5 minutes
                     cutoff = now - timedelta(minutes=5)
                     visitor = Visitor.objects.get(
                                     ip_address=ip_address,
                                     user_agent=user_agent,
                                     last_update__gte=cutoff
                                 )
                     visitor.session_key = session_key
                 except Visitor.DoesNotExist:
                     # it's probably safe to assume that the visitor is brand new
                     visitor = Visitor(**attrs)
 
             # determine whether or not the user is logged in
             user = request.user
             if isinstance(user, AnonymousUser):
                 user = None
 
             # update the tracking information
             visitor.user = user
             visitor.user_agent = user_agent
 
             # if the visitor record is new, or the visitor hasn't been here for
             # at least an hour, update their referrer URL
             one_hour_ago = now + timedelta(hours=-1)
             if not visitor.last_update or \
                 visitor.last_update <= one_hour_ago:
                 visitor.referrer = request.META.get('HTTP_REFERER', 'unknown')
 
                 # reset the number of pages they've been to
                 visitor.page_views = 0
                 visitor.session_start = now
 
             visitor.url = request.path
             visitor.page_views += 1
             visitor.last_update = now
             visitor.save()
     except:
         pass