package main import ( "errors" ricochet "github.com/special/notricochet/core" rpc "github.com/special/notricochet/rpc" "golang.org/x/net/context" "log" ) var NotImplementedError error = errors.New("Not implemented") type RpcServer struct { core *ricochet.Ricochet } func (s *RpcServer) GetServerStatus(ctx context.Context, req *rpc.ServerStatusRequest) (*rpc.ServerStatusReply, error) { if req.RpcVersion != 1 { return nil, errors.New("Unsupported RPC protocol version") } return &rpc.ServerStatusReply{ RpcVersion: 1, ServerVersion: "0.0.0", }, nil } func (s *RpcServer) MonitorNetwork(req *rpc.MonitorNetworkRequest, stream rpc.RicochetCore_MonitorNetworkServer) error { events := s.core.Network.EventMonitor().Subscribe(20) defer s.core.Network.EventMonitor().Unsubscribe(events) // Send initial status event { event := s.core.Network.GetStatus() if err := stream.Send(&event); err != nil { return err } } for { event, ok := (<-events).(rpc.NetworkStatus) if !ok { break } log.Printf("RPC monitor event: %v", event) if err := stream.Send(&event); err != nil { return err } } return nil } func (s *RpcServer) StartNetwork(ctx context.Context, req *rpc.StartNetworkRequest) (*rpc.NetworkStatus, error) { // err represents the result of the first connection attempt, but as long // as 'ok' is true, the network has started and this call was successful. ok, err := s.core.Network.Start("tcp://127.0.0.1:9051", "") if !ok { return nil, err } status := s.core.Network.GetStatus() return &status, nil } func (s *RpcServer) StopNetwork(ctx context.Context, req *rpc.StopNetworkRequest) (*rpc.NetworkStatus, error) { s.core.Network.Stop() status := s.core.Network.GetStatus() return &status, nil } func (s *RpcServer) GetIdentity(ctx context.Context, req *rpc.IdentityRequest) (*rpc.Identity, error) { reply := rpc.Identity{ Address: s.core.Identity.Address(), } return &reply, nil } func (s *RpcServer) MonitorContacts(req *rpc.MonitorContactsRequest, stream rpc.RicochetCore_MonitorContactsServer) error { monitor := s.core.Identity.ContactList().EventMonitor().Subscribe(20) defer s.core.Identity.ContactList().EventMonitor().Unsubscribe(monitor) // Populate contacts := s.core.Identity.ContactList().Contacts() for _, contact := range contacts { event := &rpc.ContactEvent{ Type: rpc.ContactEvent_POPULATE, Subject: &rpc.ContactEvent_Contact{ Contact: contact.Data(), }, } if err := stream.Send(event); err != nil { return err } } // Terminate populate list with a null subject { event := &rpc.ContactEvent{ Type: rpc.ContactEvent_POPULATE, } if err := stream.Send(event); err != nil { return err } } for { event, ok := (<-monitor).(rpc.ContactEvent) if !ok { break } log.Printf("Contact event: %v", event) if err := stream.Send(&event); err != nil { return err } } return nil } func (s *RpcServer) AddContactRequest(ctx context.Context, req *rpc.ContactRequest) (*rpc.Contact, error) { return nil, NotImplementedError } func (s *RpcServer) UpdateContact(ctx context.Context, req *rpc.Contact) (*rpc.Contact, error) { return nil, NotImplementedError } func (s *RpcServer) DeleteContact(ctx context.Context, req *rpc.DeleteContactRequest) (*rpc.DeleteContactReply, error) { contactList := s.core.Identity.ContactList() contact := contactList.ContactByAddress(req.Address) if contact == nil || (req.Id != 0 && contact.Id() != int(req.Id)) { return nil, errors.New("Contact not found") } if err := contactList.RemoveContact(contact); err != nil { return nil, err } return &rpc.DeleteContactReply{}, nil } func (s *RpcServer) AcceptInboundRequest(ctx context.Context, req *rpc.ContactRequest) (*rpc.Contact, error) { return nil, NotImplementedError } func (s *RpcServer) RejectInboundRequest(ctx context.Context, req *rpc.ContactRequest) (*rpc.RejectInboundRequestReply, error) { return nil, NotImplementedError } func (s *RpcServer) MonitorConversations(req *rpc.MonitorConversationsRequest, stream rpc.RicochetCore_MonitorConversationsServer) error { // XXX Technically there is a race between starting to monitor // and the list and state of messages used to populate, that could // result in duplicate messages or other weird behavior. // Same problem exists for other places this pattern is used. monitor := s.core.Identity.ConversationStream.Subscribe(100) defer s.core.Identity.ConversationStream.Unsubscribe(monitor) { // Populate with existing conversations contacts := s.core.Identity.ContactList().Contacts() for _, contact := range contacts { messages := contact.Conversation().Messages() for _, message := range messages { event := rpc.ConversationEvent{ Type: rpc.ConversationEvent_POPULATE, Msg: message, } if err := stream.Send(&event); err != nil { return err } } } // End population with an empty populate event event := rpc.ConversationEvent{ Type: rpc.ConversationEvent_POPULATE, } if err := stream.Send(&event); err != nil { return err } } for { event, ok := (<-monitor).(rpc.ConversationEvent) if !ok { break } if err := stream.Send(&event); err != nil { return err } } return nil } func (s *RpcServer) SendMessage(ctx context.Context, req *rpc.Message) (*rpc.Message, error) { if req.Sender == nil || !req.Sender.IsSelf { return nil, errors.New("Invalid message sender") } else if req.Recipient == nil || req.Recipient.IsSelf { return nil, errors.New("Invalid message recipient") } contact := s.core.Identity.ContactList().ContactByAddress(req.Recipient.Address) if contact == nil || (req.Recipient.ContactId != 0 && int32(contact.Id()) != req.Recipient.ContactId) { return nil, errors.New("Unknown recipient") } // XXX timestamp // XXX validate text // XXX identifier message, err := contact.Conversation().Send(req.Text) if err != nil { return nil, err } return message, nil } func (s *RpcServer) MarkConversationRead(ctx context.Context, req *rpc.MarkConversationReadRequest) (*rpc.Reply, error) { if req.Entity == nil || req.Entity.IsSelf { return nil, errors.New("Invalid entity") } contact := s.core.Identity.ContactList().ContactByAddress(req.Entity.Address) if contact == nil || (req.Entity.ContactId != 0 && int32(contact.Id()) != req.Entity.ContactId) { return nil, errors.New("Unknown entity") } contact.Conversation().MarkReadBeforeMessage(req.LastRecvIdentifier) return &rpc.Reply{}, nil }