diff options
Diffstat (limited to 'synapse/rest/media')
| -rw-r--r-- | synapse/rest/media/v1/preview_url_resource.py | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py index b1d5cabfaa..04d02ee427 100644 --- a/synapse/rest/media/v1/preview_url_resource.py +++ b/synapse/rest/media/v1/preview_url_resource.py @@ -72,7 +72,15 @@ class PreviewUrlResource(BaseMediaResource): # define our OG response for this media elif self._is_html(media_info['media_type']): # TODO: somehow stop a big HTML tree from exploding synapse's RAM - tree = html.parse(media_info['filename']) + + # XXX: can't work out how to make lxml ignore UTF8 decoding errors + # so slurp as a string at this point. + file = open(media_info['filename']) + body = file.read() + file.close() + # FIXME: we shouldn't be forcing utf-8 if the page isn't actually utf-8... + tree = html.fromstring(body.decode('utf-8','ignore')) + # tree = html.parse(media_info['filename']) # suck it up into lxml and define our OG response. # if we see any URLs in the OG response, then spider them @@ -108,14 +116,19 @@ class PreviewUrlResource(BaseMediaResource): title = tree.xpath("(//title)[1] | (//h1)[1] | (//h2)[1] | (//h3)[1]") og['og:title'] = title[0].text if title else None - images = tree.xpath("//img") + images = [ i for i in tree.xpath("//img") if 'src' in i.attrib ] big_images = [ i for i in images if ( - 'width' in i and 'height' in i and + 'width' in i.attrib and 'height' in i.attrib and i.attrib['width'] > 64 and i.attrib['height'] > 64 - )] or images - og['og:image'] = images[0].attrib['src'] if images else None + )] + big_images = big_images.sort(key=lambda i: (-1 * int(i.attrib['width']) * int(i.attrib['height']))) + images = big_images if big_images else images + + if images: + og['og:image'] = images[0].attrib['src'] text_nodes = tree.xpath("//h1/text() | //h2/text() | //h3/text() | //p/text() | //div/text() | //span/text() | //a/text()") + # text_nodes = tree.xpath("//h1/text() | //h2/text() | //h3/text() | //p/text() | //div/text()") text = '' for text_node in text_nodes: if len(text) < 1024: |