检测端口冲突时区分 tcp 和 udp 端口，防止误报

Fix #1242

scripts/menu.sh

@@ -43,36 +43,47 @@ checkrestart() {
 
 # 检查端口冲突
 checkport() {
+	. "$CRASHDIR"/menus/check_port.sh
+
 	while true; do
-		# Before each round of checks begins, execute netstat only once and cache the results
+		local conflict_found=0
-		# Avoid calling the system command once for each port
+		local conflict_port=""
-		current_listening=$(netstat -ntul 2>&1)
+		local conflict_info=""
 
-		conflict_found=0
+		conflict_info=$(check_port_with_info "$mix_port" tcp)
+		if [ $? -ne 0 ]; then
+			conflict_found=1
+			conflict_port="$mix_port"
+		fi
 
-		for portx in $dns_port $mix_port $redir_port $((redir_port + 1)) $db_port; do
-			# Use `grep` to search within the cached variables instead of re-running `netstat`
-			conflict_line=$(echo "$current_listening" | grep ":$portx ")
-
-			if [ -n "$conflict_line" ]; then
-
-				comp_box "【$portx】：$MENU_PORT_CONFLICT_TITLE" \
-					"\033[0m$(echo "$conflict_line" | head -n 1)\033[0m" \
-					"\033[36m$MENU_PORT_CONFLICT_HINT\033[0m"
-
-				. "$CRASHDIR"/menus/2_settings.sh && set_adv_config
-				. "$CRASHDIR"/libs/get_config.sh
-
-				# Mark conflict and exit the for loop, triggering the while loop to restart the check
-				# This replaces the original recursive call to `checkport`
-				conflict_found=1
-				break
-			fi
-		done
-
-		# If no conflicts are found after the entire for loop completes,
-		# the while loop exits and the function terminates.
 		if [ "$conflict_found" -eq 0 ]; then
+			conflict_info=$(check_port_with_info "$redir_port" tcp)
+			[ $? -ne 0 ] && conflict_found=1 && conflict_port="$redir_port"
+		fi
+
+		if [ "$conflict_found" -eq 0 ]; then
+			conflict_info=$(check_port_with_info "$((redir_port + 1))" tcp)
+			[ $? -ne 0 ] && conflict_found=1 && conflict_port="$((redir_port + 1))"
+		fi
+
+		if [ "$conflict_found" -eq 0 ]; then
+			conflict_info=$(check_port_with_info "$dns_port" all)
+			[ $? -ne 0 ] && conflict_found=1 && conflict_port="$dns_port"
+		fi
+
+		if [ "$conflict_found" -eq 0 ]; then
+			conflict_info=$(check_port_with_info "$db_port" tcp)
+			[ $? -ne 0 ] && conflict_found=1 && conflict_port="$db_port"
+		fi
+
+		if [ "$conflict_found" -eq 1 ]; then
+			comp_box "【$conflict_port】：$MENU_PORT_CONFLICT_TITLE" \
+				"\033[0m$conflict_info\033[0m" \
+				"\033[36m$MENU_PORT_CONFLICT_HINT\033[0m"
+
+			. "$CRASHDIR"/menus/2_settings.sh && set_adv_config
+			. "$CRASHDIR"/libs/get_config.sh
+		else
 			break
 		fi
 	done
@@ -195,17 +206,17 @@ main_menu() {
 	while true; do
 		ckstatus
 
-		btm_box "1) \033[32m$MENU_MAIN_1\033[0m"\
+		btm_box "1) \033[32m$MENU_MAIN_1\033[0m" \
-		"2) \033[36m$MENU_MAIN_2\033[0m"\
+			"2) \033[36m$MENU_MAIN_2\033[0m" \
-		"3) \033[31m$MENU_MAIN_3\033[0m"\
+			"3) \033[31m$MENU_MAIN_3\033[0m" \
-		"4) \033[33m$MENU_MAIN_4\033[0m"\
+			"4) \033[33m$MENU_MAIN_4\033[0m" \
-		"5) \033[32m$MENU_MAIN_5\033[0m"\
+			"5) \033[32m$MENU_MAIN_5\033[0m" \
-		"6) \033[36m$MENU_MAIN_6\033[0m"\
+			"6) \033[36m$MENU_MAIN_6\033[0m" \
-		"7) \033[33m$MENU_MAIN_7\033[0m"\
+			"7) \033[33m$MENU_MAIN_7\033[0m" \
-		"8) $MENU_MAIN_8"\
+			"8) $MENU_MAIN_8" \
-		"9) \033[32m$MENU_MAIN_9\033[0m"\
+			"9) \033[32m$MENU_MAIN_9\033[0m" \
-		""\
+			"" \
-		"0) $MENU_MAIN_0"
+			"0) $MENU_MAIN_0"
 		read -r -p "$MENU_MAIN_PROMPT" num
 
 		case "$num" in

scripts/menus/check_port.sh

@@ -3,17 +3,60 @@
 
 load_lang check_port
 
-check_port() {
+_get_netstat_cmd() {
-    if [ "$1" -gt 65535 ] || [ "$1" -le 1 ]; then
+	case "$1" in
-        msg_alert "\033[31m$CHECK_PORT_RANGE_ERR\033[0m"
+	tcp) echo "netstat -ntl" ;;
-        return 1
+	udp) echo "netstat -nul" ;;
-    elif echo "|$mix_port|$redir_port|$dns_port|$db_port|" | grep -q "|$1|"; then
+	*) echo "netstat -ntul" ;;
-        msg_alert "\033[31m$CHECK_PORT_DUP_ERR\033[0m"
+	esac
-        return 1
+}
-    elif netstat -ntul | grep -q ":$1[[:space:]]"; then
+
-        msg_alert "\033[31m$CHECK_PORT_OCCUPIED_ERR\033[0m"
+check_port() {
-        return 1
+	local port="$1"
-    else
+	local protocol="${2:-all}"
-        return 0
+
-    fi
+	if [ "$port" -gt 65535 ] || [ "$port" -le 1 ]; then
+		msg_alert "\033[31m$CHECK_PORT_RANGE_ERR\033[0m"
+		return 1
+	fi
+
+	local current_port_name=""
+	case "$port" in
+	"$mix_port") current_port_name="mix_port" ;;
+	"$redir_port") current_port_name="redir_port" ;;
+	"$dns_port") current_port_name="dns_port" ;;
+	"$db_port") current_port_name="db_port" ;;
+	esac
+
+	if [ -z "$current_port_name" ] && echo "|$mix_port|$redir_port|$dns_port|$db_port|" | grep -q "|$port|"; then
+		msg_alert "\033[31m$CHECK_PORT_DUP_ERR\033[0m"
+		return 1
+	fi
+
+	local check_cmd
+	check_cmd=$(_get_netstat_cmd "$protocol")
+
+	if $check_cmd 2>/dev/null | grep -q ":${port}[[:space:]]"; then
+		msg_alert "\033[31m$CHECK_PORT_OCCUPIED_ERR\033[0m"
+		return 1
+	fi
+
+	return 0
+}
+
+check_port_with_info() {
+	local port="$1"
+	local protocol="${2:-all}"
+	local check_cmd
+	check_cmd=$(_get_netstat_cmd "$protocol")
+
+	local conflict_line
+	conflict_line=$($check_cmd 2>/dev/null | grep ":${port}[[:space:]]" | head -n 1)
+
+	if [ -n "$conflict_line" ]; then
+		echo "$conflict_line"
+		return 1
+	fi
+
+	return 0
 }