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Use CSP header to treat served files as belonging to a separate origin #3341

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merged 2 commits into from Mar 9, 2018
Merged

Use CSP header to treat served files as belonging to a separate origin #3341

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Use CSP header to treat served files as belonging to a separate origin
takluyver Feb 15, 2018
694ed72
Use content_security_policy property to add restriction when serving …
takluyver Mar 8, 2018
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7 changes: 7 additions & 0 deletions notebook/base/handlers.py
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Expand Up @@ -601,6 +601,13 @@ def prepare(self):
class AuthenticatedFileHandler(IPythonHandler, web.StaticFileHandler):
"""static files should only be accessible when logged in"""

@property
def content_security_policy(self):
# In case we're serving HTML/SVG, confine any Javascript to a unique
# origin so it can't interact with the notebook server.
return super(AuthenticatedFileHandler, self).content_security_policy + \
"; sandbox allow-scripts"

@web.authenticated
def get(self, path):
if os.path.splitext(path)[1] == '.ipynb' or self.get_argument("download", False):
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7 changes: 7 additions & 0 deletions notebook/files/handlers.py
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Expand Up @@ -26,6 +26,13 @@ class FilesHandler(IPythonHandler):
a subclass of StaticFileHandler.
"""

@property
def content_security_policy(self):
# In case we're serving HTML/SVG, confine any Javascript to a unique
# origin so it can't interact with the notebook server.
return super(FilesHandler, self).content_security_policy + \
"; sandbox allow-scripts"

@web.authenticated
def head(self, path):
self.get(path, include_body=False)
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