def getCanonicalID(iname, xrd_tree):
"""Return the CanonicalID from this XRDS document.
@param iname: the XRI being resolved.
@type iname: unicode
@param xrd_tree: The XRDS output from the resolver.
@type xrd_tree: ElementTree
@returns: The XRI CanonicalID or None.
@returntype: unicode or None
"""
xrd_list = xrd_tree.findall(xrd_tag)
xrd_list.reverse()
try:
canonicalID = xri.XRI(xrd_list[0].findall(canonicalID_tag)[0].text)
except IndexError:
return None
childID = canonicalID.lower()
for xrd in xrd_list[1:]:
# XXX: can't use rsplit until we require python >= 2.4.
parent_sought = childID[:childID.rindex('!')]
parent = xri.XRI(xrd.findtext(canonicalID_tag))
if parent_sought != parent.lower():
raise XRDSFraud("%r can not come from %s" % (childID, parent))
childID = parent_sought
root = xri.rootAuthority(iname)
if not xri.providerIsAuthoritative(root, childID):
raise XRDSFraud("%r can not come from root %r" % (childID, root))
return canonicalID
def getCanonicalID(iname, xrd_tree):
"""Return the CanonicalID from this XRDS document.
@param iname: the XRI being resolved.
@type iname: unicode
@param xrd_tree: The XRDS output from the resolver.
@type xrd_tree: ElementTree
@returns: The XRI CanonicalID or None.
@returntype: unicode or None
"""
xrd_list = xrd_tree.findall(xrd_tag)
xrd_list.reverse()
try:
canonicalID = xri.XRI(xrd_list[0].findall(canonicalID_tag)[0].text)
except IndexError:
return None
childID = canonicalID.lower()
for xrd in xrd_list[1:]:
# XXX: can't use rsplit until we require python >= 2.4.
parent_sought = childID[:childID.rindex('!')]
parent = xri.XRI(xrd.findtext(canonicalID_tag))
if parent_sought != parent.lower():
raise XRDSFraud("%r can not come from %s" % (childID, parent))
childID = parent_sought
root = xri.rootAuthority(iname)
if not xri.providerIsAuthoritative(root, childID):
raise XRDSFraud("%r can not come from root %r" % (childID, root))
return canonicalID
def test(self):
result = xri.providerIsAuthoritative(providerID, canonicalID)
format = "%s providing %s, expected %s"
message = format % (providerID, canonicalID, isAuthoritative)
self.failUnlessEqual(isAuthoritative, result, message)
def test(self):
result = xri.providerIsAuthoritative(providerID, canonicalID)
format = "%s providing %s, expected %s"
message = format % (providerID, canonicalID, isAuthoritative)
self.failUnlessEqual(isAuthoritative, result, message)
