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More simple same origin test for media files cross-site access

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shortcutme 2017-07-09 14:11:06 +02:00
parent febdea6c64
commit 434cfce32a
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1 changed files with 7 additions and 7 deletions
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14
src/Ui/UiRequest.py
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@ -377,12 +377,12 @@ class UiRequest(object):
self.server.wrapper_nonces.append(wrapper_nonce)
return wrapper_nonce
# Returns if media request allowed from that referer
def isMediaRequestAllowed(self, site_address, referer):
if not re.sub("^http[s]{0,1}://", "", referer).startswith(self.env["HTTP_HOST"]):
def isSameOrigin(self, url_a, url_b):
if not url_a or not url_b:
return False
referer_path = re.sub("http[s]{0,1}://.*?/", "/", referer).replace("/media", "") # Remove site address
return referer_path.startswith("/" + site_address)
origin_a = re.sub("(http[s]{0,1}://.*?/.*?/).*", "\\1", url_a)
origin_b = re.sub("(http[s]{0,1}://.*?/.*?/).*", "\\1", url_b)
return origin_a == origin_b
# Return {address: 1Site.., inner_path: /data/users.json} from url path
def parsePath(self, path):
@ -418,8 +418,8 @@ class UiRequest(object):
else:
referer = self.env.get("HTTP_REFERER")
if referer and path_parts: # Only allow same site to receive media
if not self.isMediaRequestAllowed(path_parts["request_address"], referer):
self.log.error("Media referrer error: %s not allowed from %s" % (path_parts["address"], referer))
if not self.isSameOrigin(self.getRequestUrl(), self.getReferer()):
self.log.error("Media referrer error: %s not allowed from %s" % (self.getRequestUrl(), self.getReferer()))
return self.error403("Media referrer error") # Referrer not starts same address as requested path
if path_parts: # Looks like a valid path