| # Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Serve static images.""" |
| |
| import logging |
| import urllib |
| |
| from google.appengine.api import mail |
| from google.appengine.api import memcache |
| from google.appengine.ext import db |
| from google.appengine.ext import webapp |
| |
| import base_page |
| |
| |
| VALID_RESOURCES = [ 'favicon.ico', 'logo.png' ] |
| |
| |
| # pylint: disable=W0221 |
| |
| |
| class StaticBlobInlineFile(db.Model): |
| """A reference to a static blob to serve.""" |
| blob = db.BlobProperty(required=True) |
| filename = db.StringProperty(required=True) |
| original_filename = db.StringProperty(required=True) |
| size = db.IntegerProperty(required=True) |
| creation = db.DateTimeProperty(required=True, auto_now=True) |
| |
| |
| class UploadHandler(webapp.RequestHandler): |
| """Uploads a static file.""" |
| def post(self, resource): |
| resource = str(urllib.unquote(resource)) |
| if not resource in VALID_RESOURCES: |
| logging.warning('Unknown resource "%s"' % resource) |
| self.error(404) |
| upload_file = self.request.POST['file'] |
| blob_data = upload_file.value |
| blob = StaticBlobInlineFile.gql('WHERE filename = :1', resource).get() |
| if blob: |
| blob.blob = blob_data |
| blob.size = len(blob_data) |
| blob.original_filename = upload_file.filename |
| else: |
| blob = StaticBlobInlineFile(blob=blob_data, filename=resource, |
| original_filename=upload_file.filename, size=len(blob_data)) |
| blob.put() |
| memcache.set(resource, blob_data, namespace='static_blobs') |
| self.redirect('/static_blobs/' + resource) |
| |
| |
| class ServeHandler(webapp.RequestHandler): |
| """Serves a static file.""" |
| def get(self, resource): |
| filename = str(urllib.unquote(resource)) |
| if not filename in VALID_RESOURCES: |
| logging.warning('Unknown resource "%s"' % resource) |
| self.error(404) |
| blob_data = memcache.get(filename, namespace='static_blobs') |
| if blob_data is None: |
| blob = StaticBlobInlineFile.gql('WHERE filename = :1', filename).get() |
| if blob: |
| blob_data = blob.blob |
| else: |
| # Cache negative. |
| blob_data = '' |
| memcache.set(filename, blob_data, namespace='static_blobs') |
| if blob_data: |
| # Access to a protected member XXX of a client class |
| # pylint: disable=W0212 |
| self.response.headers['Content-Type'] = mail._GetMimeType(filename) |
| self.response.out.write(blob_data) |
| else: |
| self.redirect('/static/' + resource) |
| |
| |
| class FormPage(base_page.BasePage): |
| """A simple form to upload a static blob.""" |
| def get(self, resource): |
| resource = str(urllib.unquote(resource)) |
| if not resource in VALID_RESOURCES: |
| logging.warning('Unknown resource "%s"' % resource) |
| self.error(404) |
| return |
| template_values = self.InitializeTemplate(self.APP_NAME) |
| template_values['upload_url'] = ( |
| '/restricted/static_blobs/upload_internal/' + resource) |
| self.DisplayTemplate('static_blob_upload_form.html', template_values) |
| |
| |
| class ListPage(base_page.BasePage): |
| """List the uploaded blobs.""" |
| def get(self): |
| template_values = self.InitializeTemplate(self.APP_NAME + ' static files') |
| template_values['blobs'] = StaticBlobInlineFile.all() |
| self.DisplayTemplate('static_blobs_inline_list.html', template_values) |