downstream: ignore nickname during connection registration
Just force-set the nickname and completely disregard what the client sets during connection registration. Clients must discover their effective nickname via RPL_WELCOME.
This commit is contained in:
Simon Ser
parent
2ac9bd9c94
commit
bed50c10ce
@ -286,6 +286,12 @@ type downstreamSASL struct {
|
||||
pendingResp bytes.Buffer
|
||||
}
|
||||
|
||||
type downstreamRegistration struct {
|
||||
nick string
|
||||
username string
|
||||
password string
|
||||
}
|
||||
|
||||
type downstreamConn struct {
|
||||
conn
|
||||
|
||||
@ -295,16 +301,16 @@ type downstreamConn struct {
|
||||
user *user
|
||||
nick string
|
||||
nickCM string
|
||||
rawUsername string
|
||||
networkName string
|
||||
clientName string
|
||||
realname string
|
||||
hostname string
|
||||
account string // RPL_LOGGEDIN/OUT state
|
||||
password string // empty after authentication
|
||||
network *network // can be nil
|
||||
isMultiUpstream bool
|
||||
|
||||
registration *downstreamRegistration // nil after RPL_WELCOME
|
||||
|
||||
negotiatingCaps bool
|
||||
capVersion int
|
||||
caps capRegistry
|
||||
@ -320,12 +326,13 @@ func newDownstreamConn(srv *Server, ic ircConn, id uint64) *downstreamConn {
|
||||
logger := &prefixLogger{srv.Logger, fmt.Sprintf("downstream %q: ", remoteAddr)}
|
||||
options := connOptions{Logger: logger}
|
||||
dc := &downstreamConn{
|
||||
conn: *newConn(srv, ic, &options),
|
||||
id: id,
|
||||
nick: "*",
|
||||
nickCM: "*",
|
||||
caps: newCapRegistry(),
|
||||
monitored: newCasemapMap(0),
|
||||
conn: *newConn(srv, ic, &options),
|
||||
id: id,
|
||||
nick: "*",
|
||||
nickCM: "*",
|
||||
caps: newCapRegistry(),
|
||||
monitored: newCasemapMap(0),
|
||||
registration: new(downstreamRegistration),
|
||||
}
|
||||
dc.monitored.SetCasemapping(casemapASCII)
|
||||
dc.hostname = remoteAddr
|
||||
@ -702,31 +709,15 @@ func (dc *downstreamConn) handleMessage(ctx context.Context, msg *irc.Message) e
|
||||
func (dc *downstreamConn) handleMessageUnregistered(ctx context.Context, msg *irc.Message) error {
|
||||
switch msg.Command {
|
||||
case "NICK":
|
||||
var nick string
|
||||
if err := parseMessageParams(msg, &nick); err != nil {
|
||||
if err := parseMessageParams(msg, &dc.registration.nick); err != nil {
|
||||
return err
|
||||
}
|
||||
if nick == "" || strings.ContainsAny(nick, illegalNickChars) {
|
||||
return ircError{&irc.Message{
|
||||
Command: irc.ERR_ERRONEUSNICKNAME,
|
||||
Params: []string{dc.nick, nick, "Nickname contains illegal characters"},
|
||||
}}
|
||||
}
|
||||
nickCM := casemapASCII(nick)
|
||||
if nickCM == serviceNickCM {
|
||||
return ircError{&irc.Message{
|
||||
Command: irc.ERR_NICKNAMEINUSE,
|
||||
Params: []string{dc.nick, nick, "Nickname reserved for bouncer service"},
|
||||
}}
|
||||
}
|
||||
dc.nick = nick
|
||||
dc.nickCM = nickCM
|
||||
case "USER":
|
||||
if err := parseMessageParams(msg, &dc.rawUsername, nil, nil, &dc.realname); err != nil {
|
||||
if err := parseMessageParams(msg, &dc.registration.username, nil, nil, nil); err != nil {
|
||||
return err
|
||||
}
|
||||
case "PASS":
|
||||
if err := parseMessageParams(msg, &dc.password); err != nil {
|
||||
if err := parseMessageParams(msg, &dc.registration.password); err != nil {
|
||||
return err
|
||||
}
|
||||
case "CAP":
|
||||
@ -805,7 +796,7 @@ func (dc *downstreamConn) handleMessageUnregistered(ctx context.Context, msg *ir
|
||||
dc.logger.Printf("unhandled message: %v", msg)
|
||||
return newUnknownCommandError(msg.Command)
|
||||
}
|
||||
if dc.rawUsername != "" && dc.nick != "*" && !dc.negotiatingCaps {
|
||||
if dc.registration.nick != "" && dc.registration.username != "" && !dc.negotiatingCaps {
|
||||
return dc.register(ctx)
|
||||
}
|
||||
return nil
|
||||
@ -1269,8 +1260,8 @@ func (dc *downstreamConn) register(ctx context.Context) error {
|
||||
})
|
||||
}
|
||||
|
||||
password := dc.password
|
||||
dc.password = ""
|
||||
password := dc.registration.password
|
||||
dc.registration.password = ""
|
||||
if dc.user == nil {
|
||||
if password == "" {
|
||||
if dc.caps.IsEnabled("sasl") {
|
||||
@ -1286,8 +1277,8 @@ func (dc *downstreamConn) register(ctx context.Context) error {
|
||||
}
|
||||
}
|
||||
|
||||
if err := dc.authenticate(ctx, dc.rawUsername, password); err != nil {
|
||||
dc.logger.Printf("PASS authentication error for user %q: %v", dc.rawUsername, err)
|
||||
if err := dc.authenticate(ctx, dc.registration.username, password); err != nil {
|
||||
dc.logger.Printf("PASS authentication error for user %q: %v", dc.registration.username, err)
|
||||
return ircError{&irc.Message{
|
||||
Command: irc.ERR_PASSWDMISMATCH,
|
||||
Params: []string{dc.nick, authErrorReason(err)},
|
||||
@ -1295,7 +1286,7 @@ func (dc *downstreamConn) register(ctx context.Context) error {
|
||||
}
|
||||
}
|
||||
|
||||
_, fallbackClientName, fallbackNetworkName := unmarshalUsername(dc.rawUsername)
|
||||
_, fallbackClientName, fallbackNetworkName := unmarshalUsername(dc.registration.username)
|
||||
if dc.clientName == "" {
|
||||
dc.clientName = fallbackClientName
|
||||
} else if fallbackClientName != "" && dc.clientName != fallbackClientName {
|
||||
@ -1314,6 +1305,7 @@ func (dc *downstreamConn) register(ctx context.Context) error {
|
||||
}
|
||||
|
||||
dc.registered = true
|
||||
dc.registration = nil
|
||||
dc.logger.Printf("registration complete for user %q", dc.user.Username)
|
||||
return nil
|
||||
}
|
||||
@ -1342,7 +1334,19 @@ func (dc *downstreamConn) loadNetwork(ctx context.Context) error {
|
||||
// Some clients only allow specifying the nickname (and use the
|
||||
// nickname as a username too). Strip the network name from the
|
||||
// nickname when auto-saving networks.
|
||||
nick, _, _ := unmarshalUsername(dc.nick)
|
||||
nick, _, _ := unmarshalUsername(dc.registration.nick)
|
||||
if nick == "" || strings.ContainsAny(nick, illegalNickChars) {
|
||||
return ircError{&irc.Message{
|
||||
Command: irc.ERR_ERRONEUSNICKNAME,
|
||||
Params: []string{dc.nick, dc.registration.nick, "Nickname contains illegal characters"},
|
||||
}}
|
||||
}
|
||||
if casemapASCII(nick) == serviceNickCM {
|
||||
return ircError{&irc.Message{
|
||||
Command: irc.ERR_NICKNAMEINUSE,
|
||||
Params: []string{dc.nick, dc.registration.nick, "Nickname reserved for bouncer service"},
|
||||
}}
|
||||
}
|
||||
|
||||
dc.logger.Printf("auto-saving network %q", dc.networkName)
|
||||
var err error
|
||||
@ -1388,6 +1392,15 @@ func (dc *downstreamConn) welcome(ctx context.Context) error {
|
||||
|
||||
dc.updateSupportedCaps()
|
||||
|
||||
if uc := dc.upstream(); uc != nil {
|
||||
dc.nick = uc.nick
|
||||
} else if dc.network != nil {
|
||||
dc.nick = GetNick(&dc.user.User, &dc.network.Network)
|
||||
} else {
|
||||
dc.nick = dc.user.Username
|
||||
}
|
||||
dc.nickCM = casemapASCII(dc.nick)
|
||||
|
||||
isupport := []string{
|
||||
fmt.Sprintf("CHATHISTORY=%v", chatHistoryLimit),
|
||||
"CASEMAPPING=ascii",
|
||||
@ -1452,7 +1465,6 @@ func (dc *downstreamConn) welcome(ctx context.Context) error {
|
||||
})
|
||||
}
|
||||
|
||||
dc.updateNick()
|
||||
dc.updateRealname()
|
||||
dc.updateAccount()
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user