def pingback_ping(self):
source = self.params[0]
target = self.params[1]
slug = target.split('/')[-2]
try:
entry = Entry.objects.get(slug=slug)
if not entry.allow_comments:
raise Entry.DoesNotExist
except Entry.DoesNotExist:
return XmlRpcDispatcher.fault(33, 'The specified URI cannot be used as target')
try:
Comment.objects.get(entry=entry, type__in=['P', 'T'], author_uri=source)
return XmlRpcDispatcher.fault(48, 'The pingback has already been registered')
except Comment.DoesNotExist:
pass
s = Spider(source)
if not s.backlinks(target):
if s.code == 200:
return XmlRpcDispatcher.fault(17, 'The source URI does not contain a link to the target URI')
return XmlRpcDispatcher.fault(16, 'The source URI does not exist')
Comment.objects.create(entry=entry, type='P',
author=hostname_from_uri(source, http=False),
author_uri=source, body='')
return XmlRpcDispatcher.pingback_reply('Pingback stored')
def ping(self):
r = re.compile('<a.*?href=["\'](.*?)["\'].*?>', re.I | re.S)
for anchor in r.finditer(self.body_html):
link = anchor.group(1)
if link.startswith(settings.BLANGO_URL):
continue
s = Spider(link)
if not s.trackback(title=self.title,
url=self.get_absolute_url(),
excerpt=self.body_html,
page_name=settings.BLANGO_TITLE):
s.pingback(self.get_absolute_url())
def save(self, *args, **kwargs):
spider = Spider(self.link)
if 'html' in spider.oembed:
self.pre_html = '<div class="entry-embed">%s</div>' % \
spider.oembed['html']
elif spider.oembed.get('type') == 'photo':
self.pre_html = '<div class="entry-embed"><img alt="%(title)s" ' \
'src="%(url)s" width="%(width)s" height="%(height)s" />' \
'</div>' % spider.oembed
elif not self.thumbnail:
thumbnail = None
thumbnail_size = (0, 0)
required_attrs = ('src', 'alt', 'width', 'height')
for img in spider.soup.xpath('//img'):
if all (k in img.attrib for k in required_attrs):
width, height = int(img.get('width')), int(img.get('height'))
if width * height > reduce(lambda x, y: x * y, thumbnail_size):
thumbnail = img
thumbnail_size = (width, height)
# Try to fetch a thumbnail
if thumbnail is not None:
THUMBNAIL_SIZE = 150
img_url = thumbnail.get('src')
img_data = spider.fetch(img_url)
im = Image.open(StringIO(img_data))
im.thumbnail((THUMBNAIL_SIZE, THUMBNAIL_SIZE))
buf = StringIO()
im.save(buf, format=im.format)
self.thumbnail.save(os.path.basename(img_url),
ContentFile(buf.getvalue()))
buf.close()
result = urlparse.urlparse(self.link)
self.post_html = _('<h4>From <a href="%s">%s</a></h4>') % \
(self.link, result.netloc)
if not self.title:
self.title = spider.oembed.get('title') or spider.get_title()
super(LinkEntry, self).save(*args, **kwargs)
def trackback_view(request, entry_id):
title = request.POST.get('title')
excerpt = request.POST.get('excerpt', '')
url = request.POST.get('url')
blog_name = request.POST.get('blog_name')
if not url:
return HttpResponse('''<?xml version="1.0" encoding="utf-8"?>
<response>
<error>1</error>
<message>No URL specified</message>
</response>''', mimetype='text/xml')
if len(url) > 1024:
return HttpResponse('''<?xml version="1.0" encoding="utf-8"?>
<response>
<error>1</error>
<message>Entity Too Large</message>
</response>''', mimetype='text/xml')
if not is_absolute_link(url):
return HttpResponse('''<?xml version="1.0" encoding="utf-8"?>
<response>
<error>1</error>
<message>URL must match https?://.*</message>
</response>''', mimetype='text/xml')
entry = get_object_or_404(Entry, pk=entry_id)
if not entry.allow_comments:
return HttpResponse('''<?xml version="1.0" encoding="utf-8"?>
<response>
<error>1</error>
<message>Trackbacks are not allowed for this entry</message>
</response>''', mimetype='text/xml')
try:
Comment.objects.get(entry=entry, type__in=['T', 'P'], author_uri=url)
return HttpResponse('''<?xml version="1.0" encoding="utf-8"?>
<response>
<error>1</error>
<message>Trackback already registered</message>
</response>''', mimetype='text/xml')
except Comment.DoesNotExist:
pass
s = Spider(url)
if not s.backlinks(entry.get_absolute_url()):
return HttpResponse('''<?xml version="1.0" encoding="utf-8"?>
<response>
<error>1</error>
<message>URL doesn't link back</message>
</response>''', mimetype='text/xml')
if not blog_name:
blog_name = url.split('/')[2]
if title:
excerpt = '%s\n\n%s' % (title, excerpt)
Comment.objects.create(entry=entry, author=blog_name, author_uri=url, body=excerpt, type='T')
return HttpResponse('''<?xml version="1.0" encoding="utf-8"?>
<response>
<error>0</error>
</response>''')
