First commit

.gitignore

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+*.swp
+*.pyc
+static/lasana/css
+uploads/*
+dbfile

LICENSE.md

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+Copyright (c) 2012 ntrrgc
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+Lasaña, a temporary file hosting service
+========================================
+
+This is a WIP, but feel free to dig in source.

admin.py

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+from django.contrib import admin
+from . models import Meal
+
+class MealAdmin(admin.ModelAdmin):
+    pass
+
+admin.site.register(Meal, MealAdmin)

forms.py

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+from django.forms import Form, FileField, IntegerField, ChoiceField
+
+from . models import Meal
+
+class MealCreateForm(Form):
+    file = FileField()
+    expires_in = ChoiceField(choices=(
+        (1, "1 minute"),
+        (30, "30 minutes"),
+        (60, "1 hour"),
+        (180, "3 hours"),
+        (60*24, "1 day"),
+        (60*24*7, "1 week"),
+    ), initial=30)

management/commands/deletemeal.py

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+from django.core.management.base import BaseCommand, CommandError
+
+from lasana.models import Meal
+
+class Command(BaseCommand):
+    args = '<meal_id meal_id>'
+    help = 'Deletes the meal with the specified id'
+
+    def handle(self, *args, **options):
+        for meal_id in args:
+            try:
+                meal = Meal.objects.get(id=int(meal_id))
+            except Meal.DoesNotExist:
+                raise CommandError('Meal "%s" does not exist' % meal_id)
+
+            meal.delete()
+
+            self.stdout.write('Successfully deleted meal "%s"\n' % meal_id)

management/commands/wash.py

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+from django.core.management.base import BaseCommand, CommandError
+
+from lasana.models import Meal
+
+from django.utils import timezone
+
+class Command(BaseCommand):
+    args = ''
+    help = 'Deletes expired meals'
+
+    def handle(self, *args, **options):
+        now = timezone.now()
+        old_meals = Meal.objects.all().order_by("expiration_time")
+
+        for meal in old_meals:
+            if meal.is_expired(now):
+                meal_id = meal.id
+
+                meal.delete()
+                self.stdout.write('Thrown away expired meal "%d"\n' % meal_id)
+            else:
+                break

models.py

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+from django.db.models import Model, CharField, FileField, DateTimeField
+
+from django.conf import settings
+
+from django.utils import timezone
+
+import string
+import random
+
+class Meal(Model):
+    id_length = 4
+    id = CharField(max_length=id_length, db_index=True, primary_key=True)
+    file = FileField(upload_to=settings.LASANA_UPLOAD_ROOT)
+    expiration_time = DateTimeField(db_index=True)
+
+    def generate_auto_id(self):
+        #Theoretically, we can have up to 46656 meals, but having 10k would be enough to worry
+        if Meal.objects.count() > 10000:
+            raise "Too much meals"
+
+        while True:
+            random_string = ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(4))
+            if len(Meal.objects.filter(id=random_string)) == 0:
+                self.id = random_string
+                return self.id
+
+    def is_expired(self, now=None):
+        if not now:
+            now = timezone.now()
+        return now > self.expiration_time
+
+    class Meta:
+        ordering = ['expiration_time']
+
+    def __unicode__(self):
+        now = timezone.now()
+        if now > self.expiration_time:
+            return "%s, expired for %s" % (self.file.url, now - self.expiration_time)
+        else:
+            return "%s, expires in %s" % (self.file.url, self.expiration_time - now)

sendfile.py

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+from django.http import HttpResponse, Http404
+from django.conf import settings
+import os
+
+from django.conf import settings
+
+#For no-XSendfile approach
+from django.core.servers.basehttp import FileWrapper
+
+def send(request, file):
+    if not file:
+        raise Http404
+
+    if settings.LASANA_USE_X_SENDFILE:
+        response = HttpResponse()
+        response['Content-Disposition'] = 'filename=%s' % os.path.basename(file.name)
+        response['X-Sendfile'] = file.path
+        return response
+    else:
+        response = HttpResponse(FileWrapper(file))
+        response['Content-Disposition'] = 'filename=%s' % os.path.basename(file.name)
+        del response['content-type'] #let the web server guess
+        response['Content-Length'] = file.size
+        return response

static/lasana/sass/stylesheet.sass

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+@import url(http://fonts.googleapis.com/css?family=Donegal+One)
+
+$body_font: 'Donegal One', serif
+$content_width: 600px
+$content_border_color: #ff912f
+
+body
+  background: #fff8da
+  font-family: $body_font
+  font-size: 18px
+
+h1, #miau
+  text-align: center
+
+#content
+  border: 5px dotted $content_border_color
+  width: $content_width
+  margin-left: auto
+  margin-right: auto
+  padding:  30px
+
+form
+  width: 100%
+  display: table
+  border-collapse: separate
+  border-spacing: 2px
+  border-top: 1px solid lightgray
+  border-left: 1px solid lightgray
+  border-right: 1px solid black
+  border-bottom: 1px solid black
+
+form > .field
+  display: table-row
+
+form > .field > .cell
+  display: table-cell
+  border-top: 1px solid black
+  border-left: 1px solid black
+  border-right: 1px solid lightgray
+  border-bottom: 1px solid lightgray
+  padding: 10px 10px
+  text-align: left
+
+#lasagna_url_field
+  box-sizing: border-box
+  width: 100%
+  border: 1px solid $content_border_color
+  padding: 3px
+  font-family: $body_font
+  font-size: 36px
+
+#copyright_footer
+  padding-top: 50px
+  width: $content_width
+  margin: 0 auto
+
+hr
+  width: $content_width
+  border: 0
+  border-top: 2px solid $content_border_color
+
+#copyright_footer_note
+  font-size: 70%
+  text-align: center

templates/lasana/base.html

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+{% load staticfiles %}<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="UTF-8">
+  <title>{% block title %}Lasaña{% endblock %}</title>
+  <link rel="stylesheet" href="{% static 'lasana/css/stylesheet.css' %}" />
+</head>
+<body>
+  <h1>Lasaña</h1>
+  <div id="content">
+  {% block content %}
+  {% endblock %}
+  </div>
+  <div id="copyright_footer">
+    <hr/>
+    <div id="copyright_footer_note">
+      {% include "lasana/copyright_footer_note.html" %}
+    </div>
+  </div>
+</body>
+</html>

templates/lasana/copyright_footer_note.html

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+© John Titor 2036
+<span style="color: #737373">
+  Redefine <em>'templates/lasana/copyright_footer_note.html'</em> to edit this note.
+</span>

templates/lasana/meal_create_success.html

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+{% extends "lasana/base.html" %}
+
+{% block content %}
+<p>Share this lasagna:</p>
+<input id="lasagna_url_field" type="text" readonly value="{{ meal_serve_absolute_url }}"/>
+<script>
+  <!-- Select URL -->
+  document.getElementById("lasagna_url_field").select()
+</script>
+<p><a href="{% url meal-create %}">Store more</a></p>
+{% endblock %}

templates/lasana/meal_form.html

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+{% extends "lasana/base.html" %}
+
+{% block content %}
+<form enctype="multipart/form-data" action="" method="POST">
+  {% for field in form %}
+  <div class="field">
+    <div class="cell">{{ field.label_tag }}</div>
+    <div class="cell">{{ field }}{{ field.errors }}</div>
+  </div>
+  {% endfor %}
+  {% csrf_token %}
+  <input type="submit" value="Put in the fridge"/>
+</form>
+{% endblock %}

tests.py

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+"""
+This file demonstrates writing tests using the unittest module. These will pass
+when you run "manage.py test".
+
+Replace this with more appropriate tests for your application.
+"""
+
+from django.test import TestCase
+
+
+class SimpleTest(TestCase):
+    def test_basic_addition(self):
+        """
+        Tests that 1 + 1 always equals 2.
+        """
+        self.assertEqual(1 + 1, 2)

urls.py

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+from django.conf.urls import patterns, include, url
+
+from . import views
+
+urlpatterns = patterns('',
+    url(r'^$', views.MealCreateView.as_view(), name='meal-create'),
+    url(r'^(?P<meal_id>[A-Z0-9]+)/$', views.MealServeView.as_view(), name='meal-serve'),
+)

views.py

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+from django.views.generic.edit import CreateView, FormView
+from django.views.generic.base import View, TemplateResponse
+
+from . models import Meal
+from . forms import MealCreateForm
+from . sendfile import send
+
+from django.shortcuts import render
+from django.http import HttpResponse, HttpResponseRedirect
+
+from django.core.urlresolvers import reverse, reverse_lazy
+
+from datetime import timedelta
+from django.utils import timezone
+
+class MealCreateView(FormView):
+    template_name = "lasana/meal_form.html"
+    form_class = MealCreateForm
+
+    def form_valid(self, form):
+        expires_in = int(form.cleaned_data['expires_in'])
+        file = form.cleaned_data['file']
+
+        expiration_time = timezone.now() + timedelta(minutes=expires_in)
+
+        meal = Meal(file=file, expiration_time=expiration_time)
+        meal.generate_auto_id()
+        meal.save()
+
+        meal_serve_url = reverse('meal-serve', kwargs={'meal_id': meal.id})
+        meal_serve_absolute_url = self.request.build_absolute_uri(meal_serve_url)
+
+        return TemplateResponse(self.request, 
+                                "lasana/meal_create_success.html",
+                                context={'meal': meal,
+                                         'meal_serve_absolute_url': meal_serve_absolute_url})
+
+
+class MealServeView(View):
+    def get(self, request, *args, **kwargs):
+        #if there is no such meal, redirect to main page
+        meal_iter = Meal.objects.filter(id=kwargs['meal_id'])
+        if len(meal_iter) != 1:
+            return self.no_meal()
+
+        meal = meal_iter[0]
+
+        #if meal is there, but has expired, throw it away and redirect to main page too
+        if meal.is_expired():
+            meal.delete()
+            return self.no_meal()
+        else:
+            #else, serve the meal
+            file = meal_iter[0].file
+            return send(request, file)
+
+    def no_meal(self):
+        return HttpResponseRedirect(reverse('meal-create'))