From 49ae78f98bf67d88b548c41225cc87aeba1975f5 Mon Sep 17 00:00:00 2001
From: meera <meer@localhost>
Date: Sat, 18 Jul 2026 20:23:29 +0300
Subject: [PATCH] added server password, and flag in config to enable it

---
 main.go | 52 ++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 38 insertions(+), 14 deletions(-)

diff --git a/main.go b/main.go
index 3c1bcbf..30cd515 100644
--- a/main.go
+++ b/main.go
@@ -27,6 +27,7 @@ import (
 type Client struct {
 	nick             string
 	user             string
+	realname         string
 	conn             net.Conn
 	host             string
 	channels         map[string]*Channel
@@ -58,22 +59,26 @@ type Channelconfig struct {
 	Description string `json:"description"`
 }
 type Config struct {
-	Port       int             `json:"port"`
-	Webapiport int             `json:"webapiport"`
-	Motd       string          `json:"motd"`
-	Channels   []Channelconfig `json:"channels"`
-	Ops        []string        `json:"ops"`
+	Port               int             `json:"port"`
+	Webapiport         int             `json:"webapiport"`
+	Motd               string          `json:"motd"`
+	Enableserverpasswd bool            `json:"enableserverpassword"`
+	Serverpassword     string          `json:"serverpassword"`
+	Channels           []Channelconfig `json:"channels"`
+	Ops                []string        `json:"ops"`
 }
 
 var (
-	channels   = make(map[string]*Channel)
-	clients    = make(map[string]*Client)
-	globalOps  = make(map[string]bool)
-	chMu       sync.Mutex   // mutex for channels
-	cliMu      sync.RWMutex // mutex for clients
-	motdString []string
-	motdFile   string
-	db         *sql.DB
+	channels           = make(map[string]*Channel)
+	clients            = make(map[string]*Client)
+	globalOps          = make(map[string]bool)
+	chMu               sync.Mutex   // mutex for channels
+	cliMu              sync.RWMutex // mutex for clients
+	motdString         []string
+	motdFile           string
+	Enableserverpasswd bool
+	Serverpassword     string
+	db                 *sql.DB
 )
 
 func loadConfig() (*Config, error) {
@@ -94,6 +99,8 @@ func loadConfig() (*Config, error) {
 		globalOps[cleanedNick] = true
 	}
 	motdFile = conf.Motd
+	Enableserverpasswd = conf.Enableserverpasswd
+	Serverpassword = conf.Serverpassword
 	return &conf, nil
 }
 func loadMOTD(filename string) error {
@@ -203,7 +210,23 @@ func handleConn(conn net.Conn) {
 					client.checkRegistration()
 				}
 			}
-
+		case "PASS":
+			if !Enableserverpasswd {
+				client.fwrite(":server 421 * PASS :Server password not enabled\r\n")
+				continue
+			}
+			if len(msg.Params) < 1 {
+				client.fwrite(":server 461 * PASS :Not enough parameters\r\n")
+				continue
+			}
+			if msg.Params[0] == Serverpassword {
+				client.saslComplete = true
+				client.saslRequired = false
+				client.fwrite(":server NOTICE * :Server password accepted\r\n")
+			} else {
+				client.fwrite(":server 464 * :Password incorrect\r\n")
+				return
+			}
 		case "CAP":
 			if len(msg.Params) < 1 {
 				client.fwrite(":server 461 %s CAP :Not enough parameters\r\n", client.nick)
@@ -271,6 +294,7 @@ func handleConn(conn net.Conn) {
 			if len(msg.Params) >= 4 {
 				uname := msg.Params[0]
 				client.user = uname
+				client.realname = msg.Params[3]
 				client.checkRegistration()
 			} else {
 				fmt.Fprintf(conn, ":server 461 * USER :Not enough parameters\r\n")