Fix regression in 1.5 login behavior

[rbdr/mobius] / hotline / server.go

diff --git a/hotline/server.go b/hotline/server.go
index d87ddb99ea121fd499695ad44c10ba6ab6ae74b1..3e4ba2f08f90d1f9db317085c0873f82930292ac 100644 (file)
--- a/hotline/server.go
+++ b/hotline/server.go
@@ -2,7 +2,6 @@ package hotline
 
 import (
        "bufio"
-       "bytes"
        "context"
        "encoding/binary"
        "errors"
@@ -33,13 +32,6 @@ type requestCtx struct {
        name       string
 }
 
-var nostalgiaVersion = []byte{0, 0, 2, 0x2c} // version ID used by the Nostalgia client
-var frogblastVersion = []byte{0, 0, 0, 0xb9} // version ID used by the Frogblast 1.2.4 client
-
-var heildrun = []byte{0, 0x97}
-
-var obsessionVersion = []byte{0xbe, 0x00} // version ID used by the Obsession client
-
 type Server struct {
        Port          int
        Accounts      map[string]*Account
@@ -385,7 +377,6 @@ func (s *Server) NewClientConn(conn io.ReadWriteCloser, remoteAddr string) *Clie
                Version:    []byte{},
                AutoReply:  []byte{},
                transfers:  map[int]map[[4]byte]*FileTransfer{},
-               Agreed:     false,
                RemoteAddr: remoteAddr,
        }
        clientConn.transfers = map[int]map[[4]byte]*FileTransfer{
@@ -472,9 +463,6 @@ func (s *Server) connectedUsers() []Field {
 
        var connectedUsers []Field
        for _, c := range sortedClients(s.Clients) {
-               if !c.Agreed {
-                       continue
-               }
                user := User{
                        ID:    *c.ID,
                        Icon:  c.Icon,
@@ -676,13 +664,17 @@ func (s *Server) handleNewConnection(ctx context.Context, rwc io.ReadWriteCloser
                c.Server.outbox <- *NewTransaction(tranShowAgreement, c.ID, NewField(fieldData, s.Agreement))
        }
 
-       // Used simplified hotline v1.2.3 login flow for clients that do not send login info in tranAgreed
-       // TODO: figure out a generalized solution that doesn't require playing whack-a-mole for specific client versions
-       if c.Version == nil || bytes.Equal(c.Version, nostalgiaVersion) || bytes.Equal(c.Version, frogblastVersion) || bytes.Equal(c.Version, obsessionVersion) || bytes.Equal(c.Version, heildrun) {
-               c.Agreed = true
+       // If the client has provided a username as part of the login, we can infer that it is using the 1.2.3 login
+       // flow and not the 1.5+ flow.
+       if len(c.UserName) != 0 {
+               // Add the client username to the logger.  For 1.5+ clients, we don't have this information yet as it comes as
+               // part of tranAgreed
                c.logger = c.logger.With("name", string(c.UserName))
-               c.logger.Infow("Login successful", "clientVersion", fmt.Sprintf("%v", func() int { i, _ := byteToInt(c.Version); return i }()))
 
+               c.logger.Infow("Login successful", "clientVersion", "Not sent (probably 1.2.3)")
+
+               // Notify other clients on the server that the new user has logged in.  For 1.5+ clients we don't have this
+               // information yet, so we do it in tranAgreed instead
                for _, t := range c.notifyOthers(
                        *NewTransaction(
                                tranNotifyChangeUser, nil,