Merge pull request #1784 from slingamn/issue1650_whoisactually

fix #1650

irc/client.go

 
 // IPString returns the IP address of this client as a string.
 func (client *Client) IPString() string {
-	ip := client.IP().String()
-	if 0 < len(ip) && ip[0] == ':' {
-		ip = "0" + ip
-	}
-	return ip
+	return utils.IPStringToHostname(client.IP().String())
 }
 
 // t returns the translated version of the given string, based on the languages configured by the client.

irc/getters.go

 	return
 }
 
+// #1650: show an arbitrarily chosen session IP and hostname in RPL_WHOISACTUALLY
+func (client *Client) getWhoisActually() (ip net.IP, hostname string) {
+	client.stateMutex.RLock()
+	defer client.stateMutex.RUnlock()
+
+	for _, session := range client.sessions {
+		return session.IP(), session.rawHostname
+	}
+	return utils.IPv4LoopbackAddress, client.server.name
+}
+
 func (client *Client) Nick() string {
 	client.stateMutex.RLock()
 	defer client.stateMutex.RUnlock()

irc/server.go

 		}
 	}
 	if client == target || oper.HasRoleCapab("ban") {
-		rb.Add(nil, client.server.name, RPL_WHOISACTUALLY, cnick, tnick, fmt.Sprintf("%s@%s", targetInfo.username, target.RawHostname()), target.IPString(), client.t("Actual user@host, Actual IP"))
+		ip, hostname := target.getWhoisActually()
+		rb.Add(nil, client.server.name, RPL_WHOISACTUALLY, cnick, tnick, fmt.Sprintf("%s@%s", targetInfo.username, hostname), utils.IPStringToHostname(ip.String()), client.t("Actual user@host, Actual IP"))
 	}
 	if client == target || oper.HasRoleCapab("samode") {
 		rb.Add(nil, client.server.name, RPL_WHOISMODES, cnick, tnick, fmt.Sprintf(client.t("is using modes +%s"), target.modes.String()))