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initial UBAN implementation

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This commit is contained in:
Shivaram Lingamneni 2021-01-19 08:49:45 -05:00
parent 64bc363cf1
commit bb5276553d
14 changed files with 598 additions and 44 deletions
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22
irc/server.go
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@ -162,8 +162,14 @@ func (server *Server) Run() {
}
func (server *Server) checkBans(config *Config, ipaddr net.IP, checkScripts bool) (banned bool, requireSASL bool, message string) {
// #671: do not enforce bans against loopback, as a failsafe
// note that this function is not used for Tor connections (checkTorLimits is used instead)
if ipaddr.IsLoopback() {
return
}
if server.Defcon() == 1 {
if !(ipaddr.IsLoopback() || utils.IPInNets(ipaddr, server.Config().Server.secureNets)) {
if !utils.IPInNets(ipaddr, server.Config().Server.secureNets) {
return true, false, "New connections to this server are temporarily restricted"
}
}
@ -198,7 +204,7 @@ func (server *Server) checkBans(config *Config, ipaddr net.IP, checkScripts bool
}
// TODO: currently no way to cache results other than IPBanned
if output.Result == IPBanned && output.CacheSeconds != 0 {
network, err := utils.NormalizedNetFromString(output.CacheNet)
network, err := flatip.ParseToNormalizedNet(output.CacheNet)
if err != nil {
server.logger.Error("internal", "invalid dline net from IP ban script", ipaddr.String(), output.CacheNet)
} else {
@ -339,11 +345,13 @@ func (server *Server) tryRegister(c *Client, session *Session) (exiting bool) {
// count new user in statistics (before checking KLINEs, see #1303)
server.stats.Register(c.HasMode(modes.Invisible))
// check KLINEs
isBanned, info := server.klines.CheckMasks(c.AllNickmasks()...)
if isBanned {
c.Quit(info.BanMessage(c.t("You are banned from this server (%s)")), nil)
return true
// check KLINEs (#671: ignore KLINEs for loopback connections)
if !session.IP().IsLoopback() || session.isTor {
isBanned, info := server.klines.CheckMasks(c.AllNickmasks()...)
if isBanned {
c.Quit(info.BanMessage(c.t("You are banned from this server (%s)")), nil)
return true
}
}
server.playRegistrationBurst(session)