def digests(impl):
id = impl.getAttribute('id')
if '=' in id:
yield id.split('=', 1)
for x in xmltools.children(impl, 'manifest-digest'):
for name, value in x.attributes.itemsNS():
if name[0] is None:
yield name[1], value
def digests(impl):
id = impl.getAttribute('id')
if '=' in id:
yield id.split('=', 1)
for x in xmltools.children(impl, 'manifest-digest'):
for name, value in x.attributes.itemsNS():
if name[0] is None:
yield name[1], value
def add_digest(impl, alg_name):
alg = manifest.get_algorithm(alg_name)
# Scan through the existing digests
# - If we've already got the one we need, return
# - Otherwise, find a cached implementation we can use
existing_path = None
for a, value in digests(impl):
if a in ('sha1', 'sha1new', 'sha256'):
digest = '%s=%s' % (a, value)
else:
digest = '%s_%s' % (a, value)
if a == alg_name:
return False # Already signed with this algorithm
if not existing_path:
try:
existing_path = stores.lookup(digest)
if existing_path:
existing_digest = digest
except NotStored:
pass # OK
if existing_path is None:
print("No implementations of %s cached; can't calculate new digest" %
get_version(impl))
return False
info("Verifying %s", existing_path)
manifest.verify(existing_path, existing_digest)
print("Adding new digest to version %s" % get_version(impl))
new_digest = alg.new_digest()
for line in alg.generate_manifest(existing_path):
new_digest.update((line + '\n').encode())
for md in xmltools.children(impl, 'manifest-digest'):
break
else:
md = xmltools.create_element(impl, 'manifest-digest')
_, digest_value = manifest.splitID(alg.getID(new_digest))
md.setAttribute(alg_name, digest_value)
return True
def add_digest(impl, alg_name):
alg = manifest.get_algorithm(alg_name)
# Scan through the existing digests
# - If we've already got the one we need, return
# - Otherwise, find a cached implementation we can use
existing_path = None
for a, value in digests(impl):
digest = '%s=%s' % (a, value)
if a == alg_name:
return False # Already signed with this algorithm
if not existing_path:
try:
existing_path = stores.lookup(digest)
if existing_path:
existing_digest = digest
except NotStored:
pass # OK
if existing_path is None:
print "No implementations of %s cached; can't calculate new digest" % get_version(impl)
return False
info("Verifying %s", existing_path)
manifest.verify(existing_path, existing_digest)
print "Adding new digest to version %s" % get_version(impl)
new_digest = alg.new_digest()
for line in alg.generate_manifest(existing_path):
new_digest.update(line + '\n')
for md in xmltools.children(impl, 'manifest-digest'):
break
else:
md = xmltools.create_element(impl, 'manifest-digest')
md.setAttribute(alg_name, new_digest.hexdigest())
return True
