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disallow AUTHENTICATE when already auth'ed

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This commit is contained in:
Shivaram Lingamneni 2019-05-07 23:24:54 -04:00
parent 121e16ac52
commit 2a7d734098
1 changed files with 12 additions and 6 deletions
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18
irc/handlers.go
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@ -298,9 +298,15 @@ func accVerifyHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb
// AUTHENTICATE [<mechanism>|<data>|*]
func authenticateHandler(server *Server, client *Client, msg ircmsg.IrcMessage, rb *ResponseBuffer) bool {
details := client.Details()
if details.account != "" {
rb.Add(nil, server.name, ERR_SASLALREADY, details.nick, client.t("You're already logged into an account"))
return false
}
// sasl abort
if !server.AccountConfig().AuthenticationEnabled || len(msg.Params) == 1 && msg.Params[0] == "*" {
rb.Add(nil, server.name, ERR_SASLABORTED, client.nick, client.t("SASL authentication aborted"))
rb.Add(nil, server.name, ERR_SASLABORTED, details.nick, client.t("SASL authentication aborted"))
client.saslInProgress = false
client.saslMechanism = ""
client.saslValue = ""
@ -317,7 +323,7 @@ func authenticateHandler(server *Server, client *Client, msg ircmsg.IrcMessage,
client.saslMechanism = mechanism
rb.Add(nil, server.name, "AUTHENTICATE", "+")
} else {
rb.Add(nil, server.name, ERR_SASLFAIL, client.nick, client.t("SASL authentication failed"))
rb.Add(nil, server.name, ERR_SASLFAIL, details.nick, client.t("SASL authentication failed"))
}
return false
@ -327,7 +333,7 @@ func authenticateHandler(server *Server, client *Client, msg ircmsg.IrcMessage,
rawData := msg.Params[0]
if len(rawData) > 400 {
rb.Add(nil, server.name, ERR_SASLTOOLONG, client.nick, client.t("SASL message too long"))
rb.Add(nil, server.name, ERR_SASLTOOLONG, details.nick, client.t("SASL message too long"))
client.saslInProgress = false
client.saslMechanism = ""
client.saslValue = ""
@ -336,7 +342,7 @@ func authenticateHandler(server *Server, client *Client, msg ircmsg.IrcMessage,
client.saslValue += rawData
// allow 4 'continuation' lines before rejecting for length
if len(client.saslValue) > 400*4 {
rb.Add(nil, server.name, ERR_SASLFAIL, client.nick, client.t("SASL authentication failed: Passphrase too long"))
rb.Add(nil, server.name, ERR_SASLFAIL, details.nick, client.t("SASL authentication failed: Passphrase too long"))
client.saslInProgress = false
client.saslMechanism = ""
client.saslValue = ""
@ -353,7 +359,7 @@ func authenticateHandler(server *Server, client *Client, msg ircmsg.IrcMessage,
if client.saslValue != "+" {
data, err = base64.StdEncoding.DecodeString(client.saslValue)
if err != nil {
rb.Add(nil, server.name, ERR_SASLFAIL, client.nick, client.t("SASL authentication failed: Invalid b64 encoding"))
rb.Add(nil, server.name, ERR_SASLFAIL, details.nick, client.t("SASL authentication failed: Invalid b64 encoding"))
client.saslInProgress = false
client.saslMechanism = ""
client.saslValue = ""
@ -366,7 +372,7 @@ func authenticateHandler(server *Server, client *Client, msg ircmsg.IrcMessage,
// like 100% not required, but it's good to be safe I guess
if !handlerExists {
rb.Add(nil, server.name, ERR_SASLFAIL, client.nick, client.t("SASL authentication failed"))
rb.Add(nil, server.name, ERR_SASLFAIL, details.nick, client.t("SASL authentication failed"))
client.saslInProgress = false
client.saslMechanism = ""
client.saslValue = ""