def view_picture(request):
picture = request.ductus.resource
mime_type = picture.blob.mime_type
# figure out size to send
thumbnail_str = ''
if 'max_size' in request.GET:
try:
max_width, max_height = [
int(n) for n in request.GET['max_size'].split(',')
]
except ValueError:
return query_string_not_found(request)
try:
thumbnail_size = six.next(
iter(s for s in __allowed_thumbnail_sizes
if s <= (max_width, max_height)))
except StopIteration:
# refuse to make a thumbnail this small
return query_string_not_found(request)
thumbnail_str = '_'.join(str(s) for s in thumbnail_size)
if picture.rotation:
thumbnail_str += '_' + picture.rotation
#TODO: we probably shouldn't convert png images to jpeg...
return mediacache_redirect(request, picture.blob.href, 'image/jpeg',
thumbnail_str, picture)
def view_picture(request):
picture = request.ductus.resource
mime_type = picture.blob.mime_type
# figure out size to send
thumbnail_str = ''
if 'max_size' in request.GET:
try:
max_width, max_height = [int(n) for n in
request.GET['max_size'].split(',')]
except ValueError:
return query_string_not_found(request)
try:
thumbnail_size = six.next(iter(s for s in __allowed_thumbnail_sizes
if s <= (max_width, max_height)))
except StopIteration:
# refuse to make a thumbnail this small
return query_string_not_found(request)
thumbnail_str = '_'.join(str(s) for s in thumbnail_size)
if picture.rotation:
thumbnail_str += '_' + picture.rotation
#TODO: we probably shouldn't convert png images to jpeg...
return mediacache_redirect(request, picture.blob.href, 'image/jpeg',
thumbnail_str, picture)
def main_document_view(request, urn=None, wiki_page=None, wiki_revision=None):
"""Dispatches the appropriate view for a resource/page
"""
requested_view = request.GET.get('view', None)
resource_database = get_resource_database()
if requested_view == 'raw':
etag = __handle_etag(request, ['raw', urn], weak=False)
# fixme: we may also want to set last-modified, expires, max-age
try:
data_iterator = resource_database[urn]
except KeyError:
raise Http404
response = HttpResponse(list(data_iterator), # see django #6527
content_type='application/octet-stream')
response["ETag"] = etag
return response
if request.method == "GET":
unvaried_etag = [urn, bool(wiki_page),
request.META.get("QUERY_STRING", "")]
varied_etag = unvaried_etag + [request.LANGUAGE_CODE,
bool(request.is_secure()),
request.META.get("HTTP_COOKIE", "")]
unvaried_etag = __handle_etag(request, unvaried_etag)
varied_etag = __handle_etag(request, varied_etag)
try:
resource = resource_database.get_resource_object(urn)
except KeyError:
raise Http404("resource does not exist")
except UnexpectedHeader as e:
raise Http404(str(e))
request.ductus = DuctusRequestInfo(resource, requested_view,
wiki_page, wiki_revision)
try:
f = registered_views[resource.fqn][requested_view]
except KeyError:
try:
f = registered_views[None][requested_view]
except KeyError:
return query_string_not_found(request)
if not f.meets_requirements(request.ductus):
return query_string_not_found(request)
response = f(request)
if request.method == "GET" and not response.has_header("ETag"):
if getattr(response, "_unvarying", False):
response["ETag"] = unvaried_etag
else:
vary_headers = set([h.strip().lower() for h in response.get("Vary", "").split(',') if h])
if vary_headers.issubset(set(['cookie', 'accept-language'])):
response["ETag"] = varied_etag
return response
def view_flashcard_deck(request):
interactions_array = request.ductus.resource.interactions.array
if not interactions_array:
return edit_flashcard_deck(request)
try:
interaction = interactions_array[int(request.GET.get('interaction', 0))]
except (ValueError, IndexError):
return query_string_not_found(request)
else:
interaction = interaction.get()
interaction_view = registered_interaction_views[interaction.fqn]
return interaction_view(request, interaction)
def view_flashcard_deck(request):
interactions_array = request.ductus.resource.interactions.array
if not interactions_array:
return edit_flashcard_deck(request)
try:
interaction = interactions_array[int(request.GET.get('interaction',
0))]
except (ValueError, IndexError):
return query_string_not_found(request)
else:
interaction = interaction.get()
interaction_view = registered_interaction_views[interaction.fqn]
return interaction_view(request, interaction)
def view_diff(request):
this = request.ductus.resource
try:
that = get_resource_database().get_resource_object(request.GET["diff"])
except KeyError:
# This could mean there is no "diff" in the query string, or that the
# resource object doesn't exist. Let's first try to diff against one
# of the parents, and fail out if that doesn't work.
if this.common.parents.array:
that = this.common.parents.array[0].get()
else:
return query_string_not_found(request)
return render_to_response("wiki/diff.html", {
'diff': Diff(this, that),
}, RequestContext(request))
def view_wikipage(request, prefix, pagename):
"""Used for pages represented by a WikiPage"""
if not is_legal_wiki_pagename(prefix, pagename):
raise Http404
if request.method == 'POST' and not request.GET.get('view', None):
return _fully_handle_blueprint_post(request, prefix, pagename)
name = join_pagename(prefix, pagename)
try:
page = WikiPage.objects.get(name=name)
except WikiPage.DoesNotExist:
page = None
if page:
if "oldid" in request.GET:
try:
revision = WikiRevision.objects.get(id=request.GET["oldid"], page=page)
except (ValueError, WikiRevision.DoesNotExist):
return query_string_not_found(request)
if not revision.urn:
return query_string_not_found(request)
else:
revision = page.get_latest_revision()
else:
revision = None
if revision is None and getattr(settings, "DUCTUS_WIKI_REMOTE", None):
# See if DUCTUS_WIKI_REMOTE has the page
try:
remote_url = "%s%s?view=urn" % (settings.DUCTUS_WIKI_REMOTE, iri_to_uri(urlquote(u'%s/%s' % (prefix, pagename))))
remote_urn = json.loads(urlopen(remote_url).read(1000))["urn"]
# we never actually save this WikiPage or WikiRevision to the database
if page is None:
page, page_created = WikiPage.objects.get_or_create(name=name)
revision = WikiRevision(page=page, urn=remote_urn[4:])
except urllib2_HTTPError:
pass
if revision and revision.urn:
urn = 'urn:' + revision.urn
else:
urn = None
if request.GET.get('view', None) == 'urn':
if revision:
return render_json_response({"urn": urn})
response = None
if urn:
response = main_document_view(request, urn, page, revision)
if isinstance(response, SuccessfulEditRedirect):
return _handle_successful_wikiedit(request, response, page)
response["X-Ductus-URN"] = urn
else:
requested_view = request.GET.get("view", None)
request.ductus = DuctusRequestInfo(None, requested_view, page, revision)
if requested_view:
f = registered_views[None].get(requested_view, None)
if f and f.meets_requirements(request.ductus):
response = f(request)
if response is None:
response = new_wikipage(request, prefix, pagename)
# wikipage urls expire immediately since they can frequently be edited
patch_response_headers(response, cache_timeout=0)
patch_cache_control(response, must_revalidate=True)
return response