mirror of
https://github.com/wnlen/clash-for-linux.git
synced 2026-10-10 12:13:04 +08:00
Arvin
140 lines
2.9 KiB
Bash
140 lines
2.9 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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PROJECT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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if ! declare -f ui_info >/dev/null 2>&1; then
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# shellcheck source=scripts/ui.sh
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source "$PROJECT_DIR/scripts/ui.sh"
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fi
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PORT_CHECK_WARNED=${PORT_CHECK_WARNED:-0}
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# =========================
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# 判断端口是否被占用（更稳）
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# =========================
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is_port_in_use() {
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local port="$1"
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if command -v ss >/dev/null 2>&1; then
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ss -lnt 2>/dev/null | awk '{print $4}' | grep -E "[:.]${port}$" >/dev/null 2>&1
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return $?
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fi
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if command -v netstat >/dev/null 2>&1; then
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netstat -lnt 2>/dev/null | awk '{print $4}' | grep -E "[:.]${port}$" >/dev/null 2>&1
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return $?
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fi
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if command -v lsof >/dev/null 2>&1; then
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lsof -iTCP -sTCP:LISTEN -P -n 2>/dev/null | awk '{print $9}' | grep -E "[:.]${port}$" >/dev/null 2>&1
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return $?
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fi
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if [ "$PORT_CHECK_WARNED" -eq 0 ]; then
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ui_warn "未检测到端口检查工具（ss/netstat/lsof）" >&2
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PORT_CHECK_WARNED=1
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fi
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return 1
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}
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# =========================
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# 找可用端口（优化版）
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# =========================
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find_available_port() {
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local start="${1:-20000}"
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local end="${2:-65000}"
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local port
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# 优先随机尝试
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if command -v shuf >/dev/null 2>&1; then
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for _ in {1..30}; do
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port=$(shuf -i "${start}-${end}" -n 1)
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if ! is_port_in_use "$port"; then
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echo "$port"
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return 0
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fi
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done
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fi
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# fallback 顺序扫描（限制范围避免慢）
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for port in $(seq "$start" "$((start + 2000))"); do
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if ! is_port_in_use "$port"; then
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echo "$port"
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return 0
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fi
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done
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return 1
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}
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# =========================
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# 解析端口值（核心函数）
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# =========================
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resolve_port_value() {
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local name="$1"
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local value="$2"
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local resolved
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# auto / 空
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if [ -z "$value" ] || [ "$value" = "auto" ]; then
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resolved=$(find_available_port) || {
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ui_error "${name} 端口分配失败" >&2
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return 1
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}
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ui_warn "${name} 自动分配端口: ${resolved}" >&2
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echo "$resolved"
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return 0
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fi
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# 非数字
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if ! [[ "$value" =~ ^[0-9]+$ ]]; then
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ui_error "非法端口: $value" >&2
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return 1
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fi
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# 被占用 → 自动替换
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if is_port_in_use "$value"; then
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resolved=$(find_available_port)
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if [ -n "$resolved" ]; then
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ui_warn "${name} 端口 ${value} 已被占用，已切换为 ${resolved}" >&2
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echo "$resolved"
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return 0
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fi
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fi
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echo "$value"
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}
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# =========================
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# 解析 host:port
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# =========================
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resolve_host_port() {
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local name="$1"
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local raw="$2"
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local default_host="$3"
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local host
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local port
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if [ -z "$raw" ] || [ "$raw" = "auto" ]; then
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host="$default_host"
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port="auto"
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else
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if [[ "$raw" == *:* ]]; then
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host="${raw%:*}"
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port="${raw##*:}"
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else
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host="$default_host"
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port="$raw"
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fi
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fi
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# host 兜底
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[ -z "$host" ] && host="$default_host"
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port=$(resolve_port_value "$name" "$port") || return 1
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echo "${host}:${port}"
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} |