def get_result(result):
try:
verify_key = nacl.signing.VerifyKey(node_to_ask.pubkey)
verify_key.verify(result[1][0], result[1][1])
m = objects.Metadata()
m.ParseFromString(result[1][0])
if not os.path.isfile(DATA_FOLDER + 'cache/' + m.avatar_hash.encode("hex")):
self.get_image(node_to_ask, m.avatar_hash)
return m
except Exception:
return None
def follow(self, node_to_follow):
"""
Sends a follow message to another node in the network. The node must be online
to receive the message. The message contains a signed, serialized `Follower`
protobuf object which the recipient will store and can send to other nodes,
proving you are following them. The response is a signed `Metadata` protobuf
that will store in the db.
"""
def save_to_db(result):
if result[0] and result[1][0] == "True":
try:
u = objects.Following.User()
u.guid = node_to_follow.id
u.signed_pubkey = node_to_follow.signed_pubkey
m = objects.Metadata()
m.ParseFromString(result[1][1])
u.metadata.MergeFrom(m)
u.signature = result[1][2]
pubkey = node_to_follow.signed_pubkey[64:]
verify_key = nacl.signing.VerifyKey(pubkey)
verify_key.verify(result[1][1], result[1][2])
self.db.FollowData().follow(u)
return True
except Exception:
return False
else:
return False
proto = Profile(self.db).get(False)
m = objects.Metadata()
m.name = proto.name
m.handle = proto.handle
m.avatar_hash = proto.avatar_hash
m.short_description = proto.short_description
m.nsfw = proto.nsfw
f = objects.Followers.Follower()
f.guid = self.kserver.node.id
f.following = node_to_follow.id
f.signed_pubkey = self.kserver.node.signed_pubkey
f.metadata.MergeFrom(m)
signature = self.signing_key.sign(f.SerializeToString())[:64]
d = self.protocol.callFollow(node_to_follow, f.SerializeToString(),
signature)
self.log.info("sending follow request to %s" % node_to_follow)
return d.addCallback(save_to_db)
def save_to_db(result):
if result[0] and result[1][0] == "True":
try:
u = objects.Following.User()
u.guid = node_to_follow.id
u.pubkey = node_to_follow.pubkey
m = objects.Metadata()
m.ParseFromString(result[1][1])
u.metadata.MergeFrom(m)
u.signature = result[1][2]
verify_key = nacl.signing.VerifyKey(node_to_follow.pubkey)
verify_key.verify(result[1][1], result[1][2])
self.db.FollowData().follow(u)
return True
except Exception:
return False
else:
return False