bin/djais/views.py

   1 # -*- coding: utf-8 -*-
   2
   3 from __future__ import division
   4
   5 #TODO
   6 #Normalize 403 errors
   7
   8 import os
   9 import os.path
  10 from datetime import *
  11 import re
  12 from time import time as get_timestamp, sleep
  13 import logging
  14 import crack
  15 import struct
  16 import operator
  17 import rrdtool
  18 import csv
  19 from StringIO import StringIO
  20 from django.http import *
  21 from django.template import loader, RequestContext
  22 from django import forms
  23 from django.shortcuts import render_to_response, get_object_or_404
  24 from django.utils.safestring import mark_safe
  25
  26 from decoratedstr import remove_decoration
  27
  28 from ais.djais.basicauth import http_authenticate
  29 from ais.djais.models import *
  30 from ais.show_targets_ships import format_fleet, kml_to_kmz
  31 from ais.common import COUNTRIES_MID, Nmea, NmeaFeeder, strmmsi_to_mmsi, SHIP_TYPES, STATUS_CODES, AIS_STATUS_NOT_AVAILABLE, AIS_ROT_NOT_AVAILABLE, AIS_LATLON_SCALE, AIS_LON_NOT_AVAILABLE, AIS_LAT_NOT_AVAILABLE, AIS_COG_SCALE, AIS_COG_NOT_AVAILABLE, AIS_NO_HEADING, AIS_SOG_SCALE, AIS_SOG_NOT_AVAILABLE, AIS_SOG_MAX_SPEED, add_nmea1, add_nmea5_partial, load_fleet_to_uset
  32 from ais.ntools import datetime_to_timestamp, clean_ais_charset
  33 from ais.inputs.common import is_id4_active
  34 from ais.inputs.stats import STATS_DIR
  35 from ais.inputs.config import peers_get_config
  36 from ais import jobrunner
  37 from ais.djais.widgets import *
  38
  39 def auth(username, raw_password):
  40     try:
  41         user = User.objects.get(login=username)
  42     except User.DoesNotExist:
  43         return None
  44     if not user.check_password(raw_password):
  45         return None
  46     user.update_access_datetime()
  47     return user
  48
  49
  50 @http_authenticate(auth, 'ais')
  51 def index(request):
  52     news = News.objects.order_by('-created')[:5]
  53     return render_to_response('index.html', {'news':news}, RequestContext(request))
  54
  55
  56 class VesselSearchForm(forms.Form):
  57     def country_choices():
  58         choices = {}
  59         for mid, countryname in COUNTRIES_MID.iteritems():
  60             if choices.has_key(countryname):
  61                 choices[countryname] += u','+unicode(mid)
  62             else:
  63                 choices[countryname] = unicode(mid)
  64         choices = [ (countryname, mids) for mids, countryname in choices.iteritems() ]
  65         choices = sorted(choices, key=operator.itemgetter(1))
  66         return [(u'', u'Any')] + choices
  67
  68     name = forms.CharField(max_length=20, required=False)
  69     mmsi = forms.CharField(help_text=u'Maritime Mobile Service Identity', min_length=9, max_length=9, required=False)
  70     imo = forms.IntegerField(help_text=u'International Maritime Organization identifier assigned by Llyod', required=False)
  71     callsign = forms.CharField(max_length=7, required=False)
  72     flag = forms.ChoiceField(choices=country_choices(), required=False)
  73     destination = forms.CharField(max_length=20, required=False)
  74
  75
  76     def clean(self):
  77         cleaned_data = self.cleaned_data
  78         for value in cleaned_data.values():
  79             if value:
  80                 return cleaned_data
  81         raise forms.ValidationError("You must enter at least one criteria")
  82
  83     def clean_mmsi(self):
  84         mmsi = self.cleaned_data['mmsi']
  85         if mmsi:
  86             try:
  87                 mmsi = strmmsi_to_mmsi(mmsi)
  88             except AssertionError:
  89                 raise forms.ValidationError("Invalid MMSI")
  90         return mmsi
  91
  92
  93 @http_authenticate(auth, 'ais')
  94 def vessel_search(request):
  95     if request.method == 'POST' or request.META['QUERY_STRING']:
  96         form = VesselSearchForm(request.REQUEST)
  97         if form.is_valid():
  98             data = form.cleaned_data
  99             vessels = Vessel.objects
 100             if data['mmsi']:
 101                 vessels = vessels.filter(mmsi=data['mmsi'])
 102             if data['name']:
 103                 vessels = vessels.filter(name__contains=data['name'].upper())
 104             if data['imo']:
 105                 vessels = vessels.filter(imo=data['imo'])
 106             if data['callsign']:
 107                 vessels = vessels.filter(callsign__contains=data['callsign'].upper())
 108             if data['destination']:
 109                 vessels = vessels.filter(destination__contains=data['destination'].upper())
 110             if data['flag']:
 111                 vessels = vessels.extra(where=['mmsi/1000000 IN (%s) ' % data['flag']])
 112             return render_to_response('vessels.html', {'vessels': vessels}, RequestContext(request))
 113     else: # GET
 114         form = VesselSearchForm()
 115
 116     return render_to_response('vessel_index.html', {'form': form}, RequestContext(request))
 117
 118 class SecondsWidget(forms.MultiWidget):
 119     '''
 120     A widget that splits period number and period type in a integer and a choice widgets
 121     Does not work well for more than a week, as month lengthes do vary.
 122     '''
 123     __periods = (
 124         (u'1', u'second(s)'),
 125         (u'60', u'minute(s)'),
 126         (u'3600', u'hour(s)'),
 127         (u'86400', u'day(s)'),
 128         (u'604800', u'week(s)'),
 129         (u'2592000', u'month(es)'))
 130
 131     def __init__(self, attrs=None):
 132         textattrs = { 'size': 3 }
 133         if attrs:
 134             textattrs.update(attrs)
 135         widgets = (
 136             forms.TextInput(attrs=textattrs),
 137             forms.Select(choices=self.__periods, attrs=attrs))
 138         super(SecondsWidget, self).__init__(widgets, attrs)
 139
 140     def decompress(self, value):
 141         if value:
 142             for period_second in reversed([int(sec_txt[0]) for sec_txt in self.__periods]):
 143                 if value >= period_second and not value % period_second:
 144                     return [ unicode(value // period_second), unicode(period_second) ]
 145         return [None, None]
 146
 147 class SecondsField(forms.MultiValueField):
 148     widget = SecondsWidget
 149
 150     def __init__(self, *args, **kargs):
 151         fields = (
 152             forms.IntegerField(),
 153             forms.CharField(),
 154         )
 155         forms.MultiValueField.__init__(self, fields=fields, *args, **kargs)
 156
 157     def compress(self, data_list):
 158         #print 'data_list=', data_list
 159         if data_list and data_list[0] is not None and data_list[1] is not None:
 160             try:
 161                 return data_list[0] * int(data_list[1])
 162             except ValueError:
 163                 pass
 164         return None
 165
 166 class HistoryForm(forms.Form):
 167     format = forms.ChoiceField(choices=(('animation', 'Animation (Google Earth v5)'), ('track', 'Track line (Google Earth)'), ('csv', 'Coma separated values (SpreadSheet)')), widget=forms.Select(attrs={'onchange': mark_safe("if (this.value=='csv') $('#csvhint').show(); else $('#csvhint').hide();")}))
 168     period_type = forms.ChoiceField(choices=(('duration', 'Duration until now'), ('date_date','Between two dates'), ('start_duration', 'Start date and duration')), widget=forms.RadioSelect(attrs={'onchange': mark_safe("show_hide_start_end_time(this.value);")}))
 169     start_date = forms.DateTimeField(required=False, widget=AisCalendarWidget(attrs={'class':'vDateField'}))
 170     duration = SecondsField(required=False, label='Period length', initial=7*86400)
 171     end_date = forms.DateTimeField(required=False, widget=AisCalendarWidget(attrs={'class':'vDateField'}))
 172     grain = SecondsField(label='One position every', initial=3600)
 173
 174     def clean_start_date(self):
 175         period_type = self.cleaned_data.get('period_type', None)
 176         start_date = self.cleaned_data.get('start_date', None)
 177         if period_type in (u'date_date', u'start_duration') and start_date is None:
 178             raise forms.ValidationError('That is field is required.')
 179         return start_date
 180
 181     def clean_duration(self):
 182         period_type = self.cleaned_data.get('period_type', None)
 183         duration = self.cleaned_data.get('duration', None)
 184         print 'duration=', duration
 185         if period_type in (u'duration', u'start_duration') and duration is None:
 186             raise forms.ValidationError('That is field is required.')
 187         return duration
 188
 189     def clean_end_date(self):
 190         period_type = self.cleaned_data.get('period_type', None)
 191         end_date = self.cleaned_data.get('end_date', None)
 192         if period_type in (u'date_date',) and end_date is None:
 193             raise forms.ValidationError('That is field is required.')
 194         return end_date
 195
 196     def clean(self):
 197         cleaned_data = self.cleaned_data
 198         period_type = self.cleaned_data.get('period_type', None)
 199         start_date = self.cleaned_data.get('start_date', None)
 200         #duration = self.cleaned_data.get('duration', None)
 201         end_date = self.cleaned_data.get('end_date', None)
 202         #if period_type in (u'date_date', u'start_duration') and start_date is None:
 203         #    self._errors["start_date"] = self.error_class(['That field is required.'])
 204         #if period_type in (u'duration', u'start_duration') and duration is None:
 205         #    self._errors["duration"] = self.error_class(['That field is required.'])
 206         #if period_type in (u'date_date',) and end_date is None:
 207         #    self._errors["end_date"] = self.error_class(['That field is required.'])
 208         if period_type == u'date_date' and start_date is not None and end_date is not None:
 209             if start_date >= end_date:
 210                 self._errors["start_date"] = self.error_class(['Start date must be before end date.'])
 211         return cleaned_data
 212
 213 @http_authenticate(auth, 'ais')
 214 def vessel(request, strmmsi):
 215     mmsi = strmmsi_to_mmsi(strmmsi)
 216     vessel = get_object_or_404(Vessel, pk=mmsi)
 217     nmea = Nmea.new_from_lastinfo(strmmsi)
 218     #if not nmea.timestamp_1 and not nmea.timestamp_5:
 219     #    raise Http404
 220     return render_to_response('vessel.html', {'nmea': nmea, 'form': HistoryForm()}, RequestContext(request))
 221
 222
 223 class VesselManualInputForm(forms.Form):
 224     timestamp = forms.DateTimeField(label=u'When', help_text=u'When was the observation made in GMT. Use YYYY-MM-DD HH:MM:SS format')
 225     imo = forms.IntegerField(required=False, min_value=1000000, max_value=9999999)
 226     name = forms.CharField(max_length=20, required=False)
 227     callsign = forms.CharField(max_length=7, required=False)
 228     type = forms.TypedChoiceField(required=False, choices = [ kv for kv in SHIP_TYPES.iteritems() if 'reserved' not in kv[1].lower()], coerce=int, empty_value=0, initial=0)
 229     status = forms.TypedChoiceField(required=False, choices = [ kv for kv in STATUS_CODES.iteritems() if 'reserved' not in kv[1].lower()], coerce=int, empty_value=AIS_STATUS_NOT_AVAILABLE, initial=AIS_STATUS_NOT_AVAILABLE)
 230     sog = forms.FloatField(label='Speed', help_text='Over ground, in knots', required=False, min_value=0, max_value=AIS_SOG_MAX_SPEED/AIS_SOG_SCALE)
 231     latitude = forms.CharField(required=False)
 232     longitude = forms.CharField(required=False)
 233     cog = forms.FloatField(label='Course', help_text='Over ground', required=False, min_value=0.0, max_value=359.9)
 234     heading = forms.IntegerField(required=False, min_value=0, max_value=359)
 235
 236     @staticmethod
 237     def _clean_ais_charset(ustr):
 238         ustr = remove_decoration(ustr) # benign cleaning, but can increase size (œ->oe)
 239         ustr = ustr.upper() # benign cleaning
 240         str = clean_ais_charset(ustr.encode('ascii', 'replace'))
 241         if unicode(str) != ustr:
 242             raise forms.ValidationError('Invalid character: AIS alphabet is @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^- !"#$%&\'()*+,-./0123456789:;<=>?')
 243         return str
 244
 245     def clean_timestamp(self):
 246         data = self.cleaned_data['timestamp']
 247         if data is None:
 248             return None
 249         if data < datetime.utcnow() - timedelta(365):
 250             raise forms.ValidationError('Date is too much is the past.')
 251         if data > datetime.utcnow():
 252             raise forms.ValidationError('Date is be in the future. This form is only for observed results.')
 253         return datetime_to_timestamp(data)
 254
 255     def clean_imo(self):
 256         data = self.cleaned_data['imo']
 257         if data is None:
 258             return 0
 259         return data
 260
 261     def clean_name(self):
 262         name = self.cleaned_data['name']
 263         if name is None:
 264             return ''
 265         name = VesselManualInputForm._clean_ais_charset(name)
 266         if len(name)>20:
 267             raise forms.ValidationError('Ensure this value has at most 20 characters (it has %s).' % len(name))
 268         return name
 269
 270     def clean_callsign(self):
 271         callsign = self.cleaned_data['callsign']
 272         if callsign is None:
 273             return ''
 274         callsign = VesselManualInputForm._clean_ais_charset(callsign)
 275         if len(callsign)>7:
 276             raise forms.ValidationError('Ensure this value has at most 7 characters (it has %s).' % len(callsign))
 277         return callsign
 278
 279     def clean_sog(self):
 280         sog = self.cleaned_data['sog']
 281         if sog is None:
 282             return AIS_SOG_NOT_AVAILABLE
 283         return int(sog*AIS_SOG_SCALE)
 284
 285     def clean_latitude(self):
 286         data = self.cleaned_data['latitude']
 287         data = data.replace(u"''", u'"') # commong mistake
 288         data = data.replace(u' ', u'') # remove spaces
 289         sides = u'SN'
 290         if not data:
 291             return AIS_LAT_NOT_AVAILABLE
 292         tmp, side = data[:-1], data[-1]
 293         if side == sides[0]:
 294             side = -1
 295         elif side == sides[1]:
 296             side = 1
 297         else:
 298             raise forms.ValidationError(u'Last character must be either %s or %s.' % (sides[0], sides[1]))
 299         spl = tmp.split(u'°')
 300         if len(spl) == 1:
 301             raise forms.ValidationError(u'You need to use the ° character.')
 302         d, tmp = spl
 303         try:
 304             d = float(d)
 305         except ValueError:
 306             raise forms.ValidationError(u'Degrees must be an number. It\'s %s.' % d)
 307         spl = tmp.split(u"'", 1)
 308         if len(spl) == 1:
 309             # no ' sign: ok only if there is nothing but the side after °
 310             # we don't accept seconds if there is no minutes:
 311             # It might be an entry mistake
 312             tmp = spl[0]
 313             if len(tmp) == 0:
 314                 m = s = 0
 315             else:
 316                 raise forms.ValidationError(u'You must use the \' character between ° and %s.' % data[-1])
 317         else:
 318             m, tmp = spl
 319             try:
 320                 m = float(m)
 321             except ValueError:
 322                 raise forms.ValidationError(u'Minutes must be an number. It\'s %s.' % m)
 323             if len(tmp) == 0:
 324                 s = 0
 325             else:
 326                 if tmp[-1] != '"':
 327                     raise forms.ValidationError(u'You must use the " character between seconds and %s.' % data[-1])
 328                 s = tmp[:-1]
 329                 try:
 330                     s = float(s)
 331                 except ValueError:
 332                     raise forms.ValidationError(u'Seconds must be an number. It\'s %s.' % s)
 333         data = side * ( d + m / 60 + s / 3600)
 334
 335         if data < -90 or data > 90:
 336             raise forms.ValidationError(u'%s in not in -90..90 range' % data)
 337         return int(data * AIS_LATLON_SCALE)
 338
 339     def clean_longitude(self):
 340         data = self.cleaned_data['longitude']
 341         data = data.replace(u"''", u'"') # commong mistake
 342         data = data.replace(u' ', u'') # remove spaces
 343         sides = u'WE'
 344         if not data:
 345             return AIS_LON_NOT_AVAILABLE
 346         tmp, side = data[:-1], data[-1]
 347         if side == sides[0]:
 348             side = -1
 349         elif side == sides[1]:
 350             side = 1
 351         else:
 352             raise forms.ValidationError(u'Last character must be either %s or %s.' % (sides[0], sides[1]))
 353         spl = tmp.split(u'°')
 354         if len(spl) == 1:
 355             raise forms.ValidationError(u'You need to use the ° character.')
 356         d, tmp = spl
 357         try:
 358             d = float(d)
 359         except ValueError:
 360             raise forms.ValidationError(u'Degrees must be an number. It\'s %s.' % d)
 361         spl = tmp.split(u"'", 1)
 362         if len(spl) == 1:
 363             # no ' sign: ok only if there is nothing but the side after °
 364             # we don't accept seconds if there is no minutes:
 365             # It might be an entry mistake
 366             tmp = spl[0]
 367             if len(tmp) == 0:
 368                 m = s = 0
 369             else:
 370                 raise forms.ValidationError(u'You must use the \' character between ° and %s.' % data[-1])
 371         else:
 372             m, tmp = spl
 373             try:
 374                 m = float(m)
 375             except ValueError:
 376                 raise forms.ValidationError(u'Minutes must be an number. It\'s %s.' % m)
 377             if len(tmp) == 0:
 378                 s = 0
 379             else:
 380                 if tmp[-1] != '"':
 381                     raise forms.ValidationError(u'You must use the " character between seconds and %s.' % data[-1])
 382                 s = tmp[:-1]
 383                 try:
 384                     s = float(s)
 385                 except ValueError:
 386                     raise forms.ValidationError(u'Seconds must be an number. It\'s %s.' % s)
 387         data = side * ( d + m / 60 + s / 3600)
 388
 389         if data < -180 or data > 180:
 390             raise forms.ValidationError(u'%s in not in -180..180 range' % data)
 391         return int(data * AIS_LATLON_SCALE)
 392
 393     def clean_cog(self):
 394         data = self.cleaned_data['cog']
 395         if data is None:
 396             return AIS_COG_NOT_AVAILABLE
 397         return int(data * AIS_COG_SCALE)
 398
 399     def clean_heading(self):
 400         #raise forms.ValidationError(u'clean_heading called')
 401         data = self.cleaned_data['heading']
 402         if data is None:
 403             return AIS_NO_HEADING
 404         return data
 405
 406     def clean(self):
 407         cleaned_data = self.cleaned_data
 408         if (cleaned_data.get('latitude', AIS_LAT_NOT_AVAILABLE) == AIS_LAT_NOT_AVAILABLE ) ^ ( cleaned_data.get('longitude', AIS_LON_NOT_AVAILABLE) == AIS_LON_NOT_AVAILABLE):
 409             raise forms.ValidationError('It makes no sense to enter just a latitude or a longitude. Enter both or none.')
 410         if cleaned_data.get('latitude', AIS_LAT_NOT_AVAILABLE) == AIS_LAT_NOT_AVAILABLE:
 411             if cleaned_data.get('status', AIS_STATUS_NOT_AVAILABLE) != AIS_STATUS_NOT_AVAILABLE:
 412                 raise forms.ValidationError('It makes no sense to enter a status without coordinates. Please enter latitute and longitude too.')
 413             if cleaned_data.get('sog', AIS_SOG_NOT_AVAILABLE) != AIS_SOG_NOT_AVAILABLE:
 414                 raise forms.ValidationError('It makes no sense to enter a speed without coordinates. Please enter latitute and longitude too.')
 415             if cleaned_data.get('cog', AIS_COG_NOT_AVAILABLE) != AIS_COG_NOT_AVAILABLE:
 416                 raise forms.ValidationError('It makes no sense to enter a course without coordinates. Please enter latitute and longitude too.')
 417             if cleaned_data.get('heading', AIS_NO_HEADING) != AIS_NO_HEADING:
 418                 raise forms.ValidationError('It makes no sense to enter a heading without coordinates. Please enter latitute and longitude too.')
 419
 420         if cleaned_data.get('timestamp', None) \
 421         and cleaned_data.get('imo', 0) == 0 \
 422         and cleaned_data.get('name', '') == '' \
 423         and cleaned_data.get('callsign', '') == '' \
 424         and cleaned_data.get('type', 0) == 0 \
 425         and cleaned_data.get('status', AIS_STATUS_NOT_AVAILABLE) == AIS_STATUS_NOT_AVAILABLE \
 426         and cleaned_data.get('sog', AIS_SOG_NOT_AVAILABLE) == AIS_SOG_NOT_AVAILABLE \
 427         and cleaned_data.get('latitude', AIS_LAT_NOT_AVAILABLE) == AIS_LAT_NOT_AVAILABLE \
 428         and cleaned_data.get('longitude', AIS_LON_NOT_AVAILABLE) == AIS_LON_NOT_AVAILABLE \
 429         and cleaned_data.get('cog', AIS_COG_NOT_AVAILABLE) == AIS_COG_NOT_AVAILABLE \
 430         and cleaned_data.get('heading', AIS_NO_HEADING) == AIS_NO_HEADING:
 431             raise forms.ValidationError("You must enter some data, beside when.")
 432         return cleaned_data
 433
 434 @http_authenticate(auth, 'ais')
 435 def vessel_manual_input(request, strmmsi):
 436     strmmsi = strmmsi.encode('utf-8')
 437     nmea = Nmea.new_from_lastinfo(strmmsi)
 438     if request.method == 'POST' or request.META['QUERY_STRING']:
 439         form = VesselManualInputForm(request.REQUEST)
 440         if form.is_valid():
 441             data = form.cleaned_data
 442             source = 'U' +  struct.pack('<I', request.user.id)[0:3]
 443             result = u''
 444             if data['imo'] != 0 \
 445             or data['name'] != '' \
 446             or data['callsign'] != '' \
 447             or data['type'] != 0:
 448                 toto = (strmmsi, data['timestamp'], data['imo'], data['name'], data['callsign'], data['type'], 0,0,0,0, 0,0,24,60, 0, '', source)
 449                 result += 'UPDATING NMEA 5: '+repr(toto)+'<br>'
 450                 add_nmea5_partial(*toto)
 451             if data['status'] != AIS_STATUS_NOT_AVAILABLE \
 452             or data['sog'] != AIS_SOG_NOT_AVAILABLE \
 453             or data['latitude'] != AIS_LAT_NOT_AVAILABLE \
 454             or data['longitude'] != AIS_LON_NOT_AVAILABLE \
 455             or data['cog'] != AIS_COG_NOT_AVAILABLE \
 456             or data['heading'] != AIS_NO_HEADING:
 457
 458                 toto = (strmmsi, data['timestamp'], data['status'], AIS_ROT_NOT_AVAILABLE, data['sog'], data['latitude'], data['longitude'], data['cog'], data['heading'], source)
 459                 result += 'UPDATING NMEA 1: '+repr(toto)+'<br>'
 460                 add_nmea1(*toto)
 461             return HttpResponse('Not fully implemented: '+repr(data) + '<br>' + result)
 462     else: # GET
 463         form = VesselManualInputForm()
 464     return render_to_response('vessel_manual_input.html', {'form': form, 'nmea': nmea}, RequestContext(request))
 465
 466
 467 @http_authenticate(auth, 'ais')
 468 def vessel_lastpos(request, strmmsi):
 469     value = kml_to_kmz(format_fleet([ strmmsi ], document_name=strmmsi).encode('utf-8'))
 470     response = HttpResponse(value, mimetype="application/vnd.google-earth.kml")
 471     response['Content-Disposition'] = 'attachment; filename=%s.kmz' % strmmsi
 472     return response
 473
 474 @http_authenticate(auth, 'ais')
 475 def vessel_history(request, strmmsi):
 476     """
 477     TODO
 478     That view is called from Google Earth, so that it must support GET method.
 479     """
 480     initial = {}
 481     if request.method == 'POST':
 482         form = HistoryForm(request.POST, initial=initial)
 483         if form.is_valid():
 484             data = form.cleaned_data
 485             if data['period_type'] == 'duration':
 486                 date_start = datetime.utcnow() - timedelta(0, data['duration'])
 487                 date_end = None # Now
 488             elif data['period_type'] == 'date_date':
 489                 date_start = data['start_date']
 490                 date_end = data['end_date']
 491             else:
 492                 assert data['period_type'] == 'start_duration', ('Invalid period type %s' % data['period_type'])
 493                 date_start = data['start_date']
 494                 date_end = date_start + timedelta(0, data['duration'])
 495
 496             format = data['format']
 497
 498             if format == u'track':
 499                 command = u'show_targets_ships'
 500                 command += u' --format=track'
 501                 extension = u'kmz'
 502
 503             elif format == u'animation':
 504                 command = u'show_targets_ships'
 505                 command += u' --format=animation'
 506                 extension = u'kmz'
 507
 508             elif format == u'csv':
 509                 command = u'common'
 510                 extension = u'csv'
 511             else:
 512                 raise Http404(u'Invalid archive format')
 513
 514             command += u' --start=\'' + date_start.strftime('%Y%m%d %H%M%S') + u'\''
 515             if date_end:
 516                 command += u' --end=\'' + date_end.strftime('%Y%m%d %H%M%S') + u'\''
 517
 518             grain = data['grain']
 519             command += u' --granularity=' + unicode(grain)
 520
 521             command += u' ' + strmmsi
 522
 523             job = Job()
 524             job.friendly_filename = u'%s.%s' % (strmmsi, extension)
 525             job.user = request.user
 526             job.command = command
 527             job.save()
 528             if not jobrunner.wakeup_daemon():
 529                 return HttpResponseServerError(jobrunner.DAEMON_WAKEUP_ERROR)
 530             return HttpResponseRedirect('/job/%s/download' % job.id)
 531     else: # GET
 532         form = HistoryForm(initial=initial)
 533     strmmsi = strmmsi.encode('utf-8')
 534     nmea = Nmea.new_from_lastinfo(strmmsi)
 535     return render_to_response('vessel_history.html', {'nmea': nmea, 'form':form}, RequestContext(request))
 536
 537
 538 @http_authenticate(auth, 'ais')
 539 def fleets(request):
 540     fleetusers = request.user.fleetuser_set.order_by('fleet')
 541     return render_to_response('fleets.html', {'fleetusers':fleetusers}, RequestContext(request))
 542
 543
 544 @http_authenticate(auth, 'ais')
 545 def fleet(request, fleetname):
 546     fleet = get_object_or_404(Fleet, name=fleetname)
 547     if not FleetUser.objects.filter(fleet=fleet.id, user=request.user.id).all():
 548         return HttpResponseForbidden('<h1>Forbidden</h1>')
 549     return render_to_response('fleet.html', {'fleet':fleet}, RequestContext(request))
 550
 551
 552 class FleetEditForm(forms.Form):
 553     name = forms.CharField(max_length=50)
 554     description = forms.CharField(widget=forms.Textarea)
 555
 556     def clean_name(self):
 557         name = self.cleaned_data['name']
 558         if name == u'add':
 559             raise forms.ValidationError("Sorry that name is reserved. Try another one.")
 560         if name != self.initial.get('name', None):
 561             if Fleet.objects.filter(name=name).count():
 562                 raise forms.ValidationError("Sorry that fleet name is already in use. Try another one.")
 563         return remove_decoration(name).replace(u' ', u'_')
 564
 565
 566 @http_authenticate(auth, 'ais')
 567 def fleet_edit(request, fleetname):
 568     initial = {}
 569     if fleetname is not None:
 570         fleet = get_object_or_404(Fleet, name=fleetname)
 571         if not FleetUser.objects.filter(fleet=fleet.id, user=request.user.id).all():
 572             return HttpResponseForbidden('<h1>Forbidden</h1>')
 573
 574         initial['name'] = fleet.name
 575         initial['description'] = fleet.description
 576     else:
 577         fleet = Fleet()
 578
 579     if request.method == 'POST':
 580         form = FleetEditForm(request.POST, initial=initial)
 581         if form.is_valid():
 582             fleet.name = form.cleaned_data['name']
 583             fleet.description = form.cleaned_data['description']
 584             fleet.save()
 585             if not fleetname: # new one
 586                 fu = FleetUser()
 587                 fu.fleet = fleet
 588                 fu.user = request.user
 589                 fu.save()
 590             request.user.info('Fleet updated')
 591             return HttpResponseRedirect('/fleet/%s/' % fleet.name)
 592     else: # GET
 593         form = FleetEditForm(initial=initial)
 594     return render_to_response('fleet_edit.html', {'fleet':fleet, 'form':form}, RequestContext(request))
 595
 596
 597 @http_authenticate(auth, 'ais')
 598 def fleet_vessels(request, fleetname):
 599     fleet = get_object_or_404(Fleet, name=fleetname)
 600     if not FleetUser.objects.filter(fleet=fleet, user=request.user.id).all():
 601         return HttpResponseForbidden('<h1>Forbidden</h1>')
 602     vessels = fleet.vessel.all()
 603     return render_to_response('fleet_vessels.html', {'fleet':fleet, 'vessels': vessels}, RequestContext(request))
 604
 605
 606 @http_authenticate(auth, 'ais')
 607 def fleet_vessel_add(request, fleetname):
 608     fleet = get_object_or_404(Fleet, name=fleetname)
 609     if not FleetUser.objects.filter(fleet=fleet.id, user=request.user.id).all():
 610         return HttpResponseForbidden('<h1>Forbidden</h1>')
 611     strmmsi = request.REQUEST['mmsi']
 612     mmsi = strmmsi_to_mmsi(strmmsi)
 613     try:
 614         vessel = Vessel.objects.get(pk=mmsi)
 615     except Vessel.DoesNotExist:
 616         request.user.error('No such vessel')
 617     else:
 618         try:
 619             fv = FleetVessel.objects.get(fleet=fleet, vessel=vessel)
 620         except FleetVessel.DoesNotExist:
 621             FleetVessel(fleet=fleet, vessel=vessel).save()
 622             request.user.info(u'Vessel %s added to fleet %s.' % (vessel.name, fleetname))
 623         else:
 624             request.user.error('Vessel with MMSI %s is already in that fleet' % strmmsi)
 625     return HttpResponseRedirect('/fleet/%s/list' % fleetname)
 626
 627
 628 class FleetAddVessel(forms.Form):
 629     mmsi = forms.CharField(help_text=u'Enter one MMSI per line', required=False, widget=forms.Textarea)
 630     #name = forms.CharField(max_length=20, required=False)
 631     #imo = forms.IntegerField(required=False)
 632     #callsign = forms.CharField(max_length=7, required=False)
 633     #destination = forms.CharField(max_length=20, required=False)
 634     def clean(self):
 635         cleaned_data = self.cleaned_data
 636         for value in cleaned_data.values():
 637             if value:
 638                 return cleaned_data
 639         raise forms.ValidationError("You must enter at least one criteria")
 640
 641 @http_authenticate(auth, 'ais')
 642 def fleet_vessel_add2(request, fleetname):
 643     fleet = get_object_or_404(Fleet, name=fleetname)
 644     if not FleetUser.objects.filter(fleet=fleet.id, user=request.user.id).all():
 645         return HttpResponseForbidden('<h1>Forbidden</h1>')
 646     if request.method == 'POST' or request.META['QUERY_STRING']:
 647         form = FleetAddVessel(request.REQUEST)
 648         if form.is_valid():
 649             data = form.cleaned_data
 650             result = []
 651             a_strmmsi = request.REQUEST['mmsi']
 652             if a_strmmsi:
 653                 for strmmsi in a_strmmsi.split('\n'):
 654                     strmmsi = strmmsi.strip('\r')
 655                     if not strmmsi:
 656                         continue
 657                     try:
 658                         sqlmmsi = strmmsi_to_mmsi(strmmsi)
 659                     except AssertionError:
 660                         result.append('Invalid mmsi %s' % strmmsi)
 661                         continue
 662                     try:
 663                         vessel = Vessel.objects.get(pk=sqlmmsi)
 664                     except Vessel.DoesNotExist:
 665                         result.append('No vessel with MMSI '+strmmsi)
 666                         continue
 667                     try:
 668                         fv = FleetVessel.objects.get(fleet=fleet, vessel=vessel)
 669                         result.append('Vessel with MMSI %s is already in that fleet' % strmmsi)
 670                     except FleetVessel.DoesNotExist:
 671                         FleetVessel(fleet=fleet, vessel=vessel).save()
 672                         result.append('Vessel with MMSI %s added' % strmmsi)
 673
 674             return HttpResponse('<br>'.join(result))
 675     else: # GET
 676         form = FleetAddVessel()
 677
 678     return render_to_response('fleet_vessel_add.html', {'form': form, 'fleet': fleet}, RequestContext(request))
 679
 680
 681 @http_authenticate(auth, 'ais')
 682 def fleet_users(request, fleetname):
 683     fleet = get_object_or_404(Fleet, name=fleetname)
 684     if not FleetUser.objects.filter(fleet=fleet.id, user=request.user.id).all():
 685         return HttpResponseForbidden('<h1>Forbidden</h1>')
 686
 687     if request.method == 'POST' or request.META['QUERY_STRING']:
 688         action = request.REQUEST['action']
 689         userlogin = request.REQUEST['user']
 690         try:
 691             user = User.objects.get(login=userlogin)
 692         except User.DoesNotExist:
 693             request.user.error(u'User %s does not exist.' % userlogin)
 694         else:
 695             if action == u'add':
 696                 try:
 697                     fu = FleetUser.objects.get(fleet=fleet, user=user)
 698                     request.user.error(u'User %s already has access.' % user.login)
 699                 except FleetUser.DoesNotExist:
 700                     FleetUser(fleet=fleet, user=user).save()
 701                     #TODO log
 702                     request.user.info(u'Granted access to user %s.' % user.login)
 703             elif action == u'revoke':
 704                 try:
 705                     fu = FleetUser.objects.get(fleet=fleet, user=user)
 706                     fu.delete()
 707                     #TODO log
 708                     request.user.info(u'Revoked access to user %s.' % user.login)
 709                     if FleetUser.objects.filter(fleet=fleet).count() == 0:
 710                         fleet.delete()
 711                         request.user.info(u"Deleted fleet %s (no more users)." % fleet.name)
 712                         return HttpResponseRedirect('/fleet/')
 713                 except FleetUser.DoesNotExist:
 714                     request.user.error(u'User %s didn\'t have access.' % user.login)
 715             else:
 716                 request.user.error(u'Unknown action %s' % action)
 717
 718     fleetusers = fleet.fleetuser_set.all()
 719     otherusers = User.objects.exclude(id__in=[fu.user.id for fu in fleetusers]).order_by('name')
 720     return render_to_response('fleet_users.html', {'fleet':fleet, 'fleetusers': fleetusers, 'otherusers': otherusers}, RequestContext(request))
 721
 722
 723 @http_authenticate(auth, 'ais')
 724 def fleet_lastpos(request, fleetname):
 725     fleet = get_object_or_404(Fleet, name=fleetname)
 726     if not FleetUser.objects.filter(fleet=fleet.id, user=request.user.id).all():
 727         return HttpResponseForbidden('<h1>Forbidden</h1>')
 728     fleet_uset = load_fleet_to_uset(fleet.id)
 729     value = kml_to_kmz(format_fleet(fleet_uset, document_name=fleetname+' fleet').encode('utf-8'))
 730     response = HttpResponse(value, mimetype="application/vnd.google-earth.kml")
 731     response['Content-Disposition'] = 'attachment; filename=%s.kmz' % fleetname
 732     return response
 733
 734
 735 @http_authenticate(auth, 'ais')
 736 def jobs_index(request):
 737     show_archive = request.REQUEST.has_key('archive')
 738     if show_archive:
 739         jobs = request.user.job_set.all()
 740     else:
 741         jobs = request.user.job_set.filter(archive_time__isnull=True)
 742
 743     response = render_to_response('jobs.html', {'jobs': jobs, 'queue_size': Job.queue_size(), 'archive': show_archive }, RequestContext(request))
 744     response['Refresh'] = 15
 745     return response
 746
 747 @http_authenticate(auth, 'ais')
 748 def job_detail(request, jobid):
 749     job = get_object_or_404(Job, id=jobid)
 750     if job.user != request.user:
 751         return HttpResponseForbidden('403 Forbidden')
 752     response = render_to_response('job.html', {'job': job, 'queue_size': Job.queue_size()}, RequestContext(request))
 753     if not job.finish_time:
 754         response['Refresh'] = 5
 755     elif not job.archive_time:
 756         # finished but not archived:
 757         # TODO: use hostname
 758         response['Refresh'] = '0;url=https://ais.nirgal.com/job/%s/download' % job.id
 759         # careful not to modify other unschronized columns
 760         Job.objects.filter(id=jobid).update(archive_time = datetime.utcnow())
 761     return response
 762
 763 @http_authenticate(auth, 'ais')
 764 def job_get(request, jobid):
 765     job = get_object_or_404(Job, id=jobid)
 766     if job.user != request.user:
 767         return HttpResponseForbidden('403 Forbidden')
 768     total_wait = 0
 769     while not job.finish_time:
 770         sleep(1)
 771         total_wait += 1
 772         if total_wait > 15:
 773             request.user.info('Your query is slow. Please be patient.')
 774             # TODO: Do not overwrite job.finishtime / result
 775             if not job.notify:
 776                 # careful not to modify other unschronized columns
 777                 Job.objects.filter(id=jobid).update(notify = 'W') # Web
 778             return HttpResponseRedirect('/job/%s/' % job.id)
 779         job = get_object_or_404(Job, id=jobid)
 780
 781     if not job.archive_time:
 782         # careful not to modify other unschronized columns
 783         Job.objects.filter(id=jobid).update(archive_time = datetime.utcnow())
 784
 785     if job.result:
 786         # Error occured
 787          return HttpResponseRedirect('/job/%s/' % job.id)
 788     extension = os.path.splitext(job.friendly_filename)[-1]
 789     return HttpResponseRedirect('/job_result/%s%s/%s' % (job.id, extension, job.friendly_filename))
 790
 791 @http_authenticate(auth, 'ais')
 792 def users(request):
 793     users = User.objects.order_by('name')
 794     for user in users:
 795         user.admin_ok = user.is_admin_by(request.user.id)
 796     if request.REQUEST.has_key('showtree'):
 797         local_users = {}
 798         for user in users:
 799             user.children = []
 800             local_users[user.id] = user
 801         for user in users:
 802             if user.father_id == None:
 803                 root = user
 804             else:
 805                 local_users[user.father_id].children.append(user)
 806         assert root
 807         return render_to_response('users_tree.html', {'root': root, 'auser': request.user.id}, RequestContext(request))
 808     else:
 809         return render_to_response('users.html', {'users':users}, RequestContext(request))
 810
 811 phone_re = re.compile('^\\+.+')
 812
 813 class UserEditForm(forms.Form):
 814     login = forms.RegexField(regex=r'^[a-zA-Z0-9_]+$', max_length=16,
 815         error_message ='Login must only contain letters, numbers and underscores')
 816     name = forms.CharField(max_length=50)
 817     email = forms.EmailField()
 818     phone = forms.RegexField(regex='\\+.+', max_length=20, required=False,
 819         error_message ='Phones must start with a \'+\'')
 820     def __init__(self, *args, **kargs):
 821         forms.Form.__init__(self, *args, **kargs)
 822         self.old_login = kargs['initial']['login']
 823     def clean_login(self):
 824         new_login = self.cleaned_data['login']
 825         if new_login != self.old_login:
 826             if User.objects.filter(login=new_login).count():
 827                 raise forms.ValidationError("Sorry that login is already in use. Try another one.")
 828             if new_login == u'add':
 829                 raise forms.ValidationError("Sorry that login is reserved. Try another one.")
 830         return new_login
 831
 832 @http_authenticate(auth, 'ais')
 833 def user_detail(request, login):
 834     user = get_object_or_404(User, login=login)
 835     user.admin_ok = user.is_admin_by(request.user.id)
 836     return render_to_response('user_detail.html', {'auser': user}, RequestContext(request))
 837
 838 @http_authenticate(auth, 'ais')
 839 def user_edit(request, login):
 840     initial = {}
 841     if login:
 842         user = get_object_or_404(User, login=login)
 843         if not user.is_admin_by(request.user.id):
 844             return HttpResponseForbidden('403 Forbidden')
 845     else:
 846         user = User()
 847         user.father_id = request.user.id;
 848     initial['login'] = user.login
 849     initial['name'] = user.name
 850     initial['email'] = user.email
 851     initial['phone'] = user.phone
 852     if request.method == 'POST':
 853         form = UserEditForm(request.POST, initial=initial)
 854         if form.is_valid():
 855             user.login = form.cleaned_data['login']
 856             user.name = form.cleaned_data['name']
 857             user.email = form.cleaned_data['email']
 858             user.phone = form.cleaned_data['phone']
 859             user.save()
 860             user.check_sandbox_access(request.user)
 861             return HttpResponseRedirect('/user/')
 862     else: # GET
 863         form = UserEditForm(initial=initial)
 864
 865     return render_to_response('user_edit.html', {'form':form, 'auser': user}, RequestContext(request))
 866
 867
 868 class ChangePasswordForm(forms.Form):
 869     new_password = forms.CharField(max_length=16, widget=forms.PasswordInput())
 870     new_password_check = forms.CharField(max_length=16, widget=forms.PasswordInput())
 871
 872     def clean_generic_password(self, field_name):
 873         password = self.cleaned_data[field_name]
 874         try:
 875             crack.FascistCheck(password)
 876         except ValueError, err:
 877             raise forms.ValidationError(err.message)
 878         return password
 879
 880     def clean_new_password(self):
 881         return self.clean_generic_password('new_password')
 882
 883     def clean_new_password_check(self):
 884         return self.clean_generic_password('new_password_check')
 885
 886     def clean(self):
 887         cleaned_data = self.cleaned_data
 888         pass1 = cleaned_data.get('new_password')
 889         pass2 = cleaned_data.get('new_password_check')
 890         if pass1 != pass2 and pass2:
 891             self._errors['new_password_check'] = forms.util.ErrorList(['Passwords must match'])
 892             del cleaned_data['new_password_check'] # FIXME
 893         return cleaned_data
 894
 895
 896 @http_authenticate(auth, 'ais')
 897 def user_change_password(request, login):
 898     user = get_object_or_404(User, login=login)
 899     if not user.is_admin_by(request.user.id):
 900         return HttpResponseForbidden('403 Forbidden')
 901     if request.method == 'POST':
 902         form = ChangePasswordForm(request.POST)
 903         if form.is_valid():
 904             user.set_password(form.cleaned_data['new_password'])
 905             user.save()
 906             return HttpResponseRedirect('/user/')
 907     else: # GET
 908         form = ChangePasswordForm()
 909     return render_to_response('user_change_password.html', {'form':form, 'auser':user}, RequestContext(request))
 910
 911
 912 @http_authenticate(auth, 'ais')
 913 def user_delete(request, login):
 914     user = get_object_or_404(User, login=login)
 915     if not user.is_admin_by(request.user.id):
 916         return HttpResponseForbidden('403 Forbidden')
 917     if request.REQUEST.get('confirm', None):
 918         user.delete()
 919         return HttpResponseRedirect('/user/')
 920     return render_to_response('user_delete.html', {'form':None, 'auser':user}, RequestContext(request))
 921
 922
 923 def logout(request):
 924     # TODO
 925     return HttpResponse('Not implemented')
 926     #response = render_to_response('logout.html', {}, RequestContext(request))
 927     #return response
 928
 929 periods = ({
 930     'name_tiny': '2h',
 931     'name_long': '2 hours',
 932     'seconds': 2*60*60
 933     }, {
 934     'name_tiny': '6h',
 935     'name_long': '6 hours',
 936     'seconds': 6*60*60,
 937     'default': True,
 938     }, {
 939     'name_tiny': '2d',
 940     'name_long': '2 days',
 941     'seconds': 2*24*60*60
 942     }, {
 943     'name_tiny': '14d',
 944     'name_long': '2 weeks',
 945     'seconds': 14*24*60*60
 946     }, {
 947     'name_tiny': '90d',
 948     'name_long': '3 monthes',
 949     'seconds': 90*24*60*60
 950     }, {
 951     'name_tiny': '180d',
 952     'name_long': '6 monthes',
 953     'seconds': 180*24*60*60
 954     })
 955
 956 class StatsSelectorForm(forms.Form):
 957     peers = forms.ChoiceField(choices=[('', 'All')] + [(id4,source['name']) for id4,source in peers_get_config().iteritems()])
 958     types = forms.ChoiceField(choices=[('', 'All'), ('bytes', 'Bandwidth'), ('counts', "Packet'izer")], initial='counts')
 959     periods = forms.ChoiceField(choices=[(period['name_tiny'], period['name_long']) for period in periods] + [('', 'All')], initial='2d')
 960
 961 @http_authenticate(auth, 'ais')
 962 def sources_index(request):
 963     ACTIVE_MINUTES = 5
 964     peers_config = peers_get_config()
 965     peers_display = []
 966     for id4, peer in peers_config.iteritems():
 967         peer['id4'] = id4
 968         peer['id2'] = id4[2:]
 969         peer['active'] = is_id4_active(id4, 60*ACTIVE_MINUTES)
 970         peers_display.append(peer)
 971
 972     peers_display = sorted(peers_display, key=lambda k: k['id4'])
 973
 974     form = StatsSelectorForm()
 975
 976     response = render_to_response('sources_index.html', {'sources':peers_display, 'active_minutes': ACTIVE_MINUTES, 'form': form}, RequestContext(request))
 977     response['Refresh'] = 60*ACTIVE_MINUTES
 978     return response
 979
 980
 981 @http_authenticate(auth, 'ais')
 982 def sources_stats(request):
 983     filter_peers = request.REQUEST.get('peers', None)
 984     if filter_peers:
 985         filter_peers = filter_peers.split(u',')
 986
 987     peers_config = peers_get_config()
 988     peers_display = []
 989
 990     for id4, peer in peers_config.iteritems():
 991         if filter_peers:
 992             if unicode(id4) not in filter_peers:
 993                 continue
 994         peer['id4'] = id4
 995         peers_display.append(peer)
 996
 997     peers_display = sorted(peers_display, key=lambda k: k['id4'])
 998
 999     filter_types = request.REQUEST.get('types', None)
1000     if filter_types:
1001         filter_types = filter_types.split(u',')
1002     else:
1003         filter_types = [ 'bytes', 'counts' ]
1004     logging.error('filter_types=%s', filter_types)
1005
1006     filter_periods = request.REQUEST.get('periods', None)
1007     if filter_periods:
1008         display_periods = []
1009         for period_name in filter_periods.split(u','):
1010             for period in periods:
1011                 if period['name_tiny'] == period_name:
1012                     display_periods.append(period)
1013     else:
1014         display_periods = periods
1015     #logging.error('display_periods=%s', display_periods)
1016
1017
1018     now = int(get_timestamp())
1019     for config in peers_display:
1020         id4 = config['id4']
1021         for period in periods:
1022             args = os.path.join(STATS_DIR, id4+'-'+period['name_tiny']+'-bytes.png'), \
1023                 '--lazy', \
1024                 '-l', '0', \
1025                 '--title', config['name'] + ' - Bandwidth usage - ' + period['name_long'], \
1026                 '--start', '%d' % (now - period['seconds']), \
1027                 '--end', '%d' % now, \
1028                 '--vertical-label', 'bps', \
1029                 'DEF:bytes=%s:bytes:AVERAGE' % os.path.join(STATS_DIR, id4+'.rrd'), \
1030                 'DEF:rawbytes=%s:rawbytes:AVERAGE' % os.path.join(STATS_DIR, id4+'.rrd'), \
1031                 'CDEF:bits=bytes,8,*', \
1032                 'CDEF:rawbits=rawbytes,8,*', \
1033                 'LINE:bits#00FF00:IP payload', \
1034                 'LINE:rawbits#FF0000:IP with headers'
1035             rrdtool.graph(*args)
1036             args = os.path.join(STATS_DIR, id4+'-'+period['name_tiny']+'-counts.png'), \
1037                 '--lazy', \
1038                 '-l', '0', \
1039                 '--title', config['name'] + ' - Packet\'izer stats - ' + period['name_long'], \
1040                 '--start', '%d' % (now-period['seconds']), \
1041                 '--end', '%d' % now, \
1042                 '--vertical-label', 'Hz', \
1043                 'DEF:packets=%s:packets:AVERAGE' % os.path.join(STATS_DIR, id4+'.rrd'), \
1044                 'DEF:lines=%s:lines:AVERAGE' % os.path.join(STATS_DIR, id4+'.rrd'), \
1045                 'LINE:packets#FF0000:input packets', \
1046                 'LINE:lines#00FF00:AIVDM lines'
1047             rrdtool.graph(*args)
1048     return render_to_response('sources.html', {'sources':peers_display, 'show_bytes': 'bytes' in filter_types,  'show_counts': 'counts' in filter_types, 'periods': display_periods}, RequestContext(request))
1049
1050
1051 @http_authenticate(auth, 'ais')
1052 def news(request, page):
1053     NEWS_PER_PAGE = 5
1054     if page:
1055         page = int(page)
1056     else:
1057         page = 1
1058     npages = int((News.objects.count() + NEWS_PER_PAGE - 1) // NEWS_PER_PAGE)
1059     news = News.objects.order_by('-created')[(page - 1) * NEWS_PER_PAGE : page * NEWS_PER_PAGE]
1060     return render_to_response('news.html', {'news':news, 'page': page, 'npages': npages}, RequestContext(request))
1061
1062 @http_authenticate(auth, 'ais')
1063 def news_atom(request):
1064     from django.db import connection
1065
1066     news = News.objects.order_by('-created')
1067
1068     cursor = connection.cursor()
1069     cursor.execute("SELECT MAX(updated) FROM news")
1070     row = cursor.fetchone()
1071     last_update = row[0]
1072
1073     return render_to_response('news.atom', {'news':news, 'last_update':last_update}, RequestContext(request), mimetype='application/atom+xml')