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-rw-r--r--youtube_dl/extractor/common.py11
1 files changed, 11 insertions, 0 deletions
diff --git a/youtube_dl/extractor/common.py b/youtube_dl/extractor/common.py
index 78f238f84..fe09817f9 100644
--- a/youtube_dl/extractor/common.py
+++ b/youtube_dl/extractor/common.py
@@ -252,6 +252,17 @@ class InfoExtractor(object):
outf.write(webpage_bytes)
content = webpage_bytes.decode(encoding, 'replace')
+
+ if (u'<title>Access to this site is blocked</title>' in content and
+ u'Websense' in content[:512]):
+ msg = u'Access to URL %s has been blocked by Websense filtering software in your network.' % urlh.geturl()
+ blocked_iframe = self._html_search_regex(
+ r'<iframe src="([^"]+)"', content,
+ u'Websense information URL', default=None)
+ if blocked_iframe:
+ msg += u' Visit %s for more details' % blocked_iframe
+ raise ExtractorError(msg, expected=True)
+
return (content, urlh)
def _download_webpage(self, url_or_request, video_id, note=None, errnote=None, fatal=True):