quirks support

--HG--
branch : nmdc-ircfrontend

server.go

@@ -40,6 +40,30 @@ const (
 	CSJoined
 )
 
+type Quirks struct {
+	SendNamesOnWho bool
+}
+
+func DefaultQuirks() Quirks {
+	return Quirks{
+		SendNamesOnWho: false,
+	}
+}
+
+func HexChatQuirks() Quirks {
+	return Quirks{
+		SendNamesOnWho: true,
+	}
+}
+
+func GetQuirksForClient(ver string) Quirks {
+	if strings.Contains(ver, "HexChat") {
+		return HexChatQuirks()
+	} else {
+		return DefaultQuirks()
+	}
+}
+
 type Server struct {
 	name       string
 	motd       string
@@ -59,6 +83,8 @@ type Server struct {
 	recievedFirstServerMessage bool
 	recievedCtcpVersion        bool
 	nickChangeAttempt          int
+
+	quirks Quirks
 }
 
 func NewServer(name string, upstream libnmdc.HubAddress, conn net.Conn) *Server {
@@ -77,6 +103,7 @@ func NewServer(name string, upstream libnmdc.HubAddress, conn net.Conn) *Server
 			SkipAutoReconnect: true,
 		},
 		upstreamCloser: make(chan struct{}, 1),
+		quirks:         DefaultQuirks(),
 	}
 }
 
@@ -439,6 +466,7 @@ func (s *Server) handleRegisteredCommand(command string, args []string) {
 			versionString := message[9:]
 			versionString = versionString[:len(versionString)-1]
 			s.SetClientSoftwareVersion(versionString)
+			s.quirks = GetQuirksForClient(versionString)
 			return
 		}
 
@@ -636,6 +664,10 @@ func (s *Server) handleJoinedCommand(command string, args []string) {
 		// s.sendWho(args[0])
 		// s.sendNames() // fixes hexchat, but andchat always sends WHO /immediately/ after NAMES end, causing an infinite loop
 
+		if s.quirks.SendNamesOnWho {
+			s.sendNames()
+		}
+
 	case "MODE":
 		if len(args) < 1 {
 			s.reply(errMoreArgs)