93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package frp
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import (
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"embed"
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"fmt"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"sync"
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)
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//go:embed bin/*
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var embeddedFrpc embed.FS
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var (
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cachedFrpcPath string
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frpcPathMutex sync.Mutex
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)
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// GetFrpcPath 获取 frpc 二进制路径
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// 优先级: 本地缓存 > 内嵌二进制 > 系统 PATH
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func GetFrpcPath() (string, error) {
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frpcPathMutex.Lock()
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defer frpcPathMutex.Unlock()
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if cachedFrpcPath != "" {
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if _, err := os.Stat(cachedFrpcPath); err == nil {
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return cachedFrpcPath, nil
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}
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cachedFrpcPath = ""
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}
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var fileName string
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switch {
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case runtime.GOOS == "windows" && runtime.GOARCH == "amd64":
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fileName = "frpc_windows_amd64.exe"
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case runtime.GOOS == "linux" && runtime.GOARCH == "amd64":
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fileName = "frpc_linux_amd64"
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case runtime.GOOS == "linux" && runtime.GOARCH == "arm64":
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fileName = "frpc_linux_arm64"
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case runtime.GOOS == "linux" && runtime.GOARCH == "arm":
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fileName = "frpc_linux_arm_hf"
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default:
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path, err := exec.LookPath("frpc")
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if err == nil {
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cachedFrpcPath = path
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return path, nil
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}
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return "", fmt.Errorf("不支持的平台: %s/%s", runtime.GOOS, runtime.GOARCH)
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}
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// 尝试从本地 bin 目录加载
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localPath := filepath.Join(".", "bin", fileName)
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if _, err := os.Stat(localPath); err == nil {
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cachedFrpcPath = localPath
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return localPath, nil
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}
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// 从 embed 提取到 data 目录（Windows 和 Linux 统一）
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dataDir := "./data"
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if err := os.MkdirAll(dataDir, 0755); err != nil {
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return "", fmt.Errorf("创建 data 目录失败: %w", err)
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}
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tmpPath := filepath.Join(dataDir, "frpc")
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if runtime.GOOS == "windows" {
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tmpPath += ".exe"
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}
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data, err := embeddedFrpc.ReadFile("bin/" + fileName)
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if err == nil {
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if err := os.WriteFile(tmpPath, data, 0755); err == nil {
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cachedFrpcPath = tmpPath
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return tmpPath, nil
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}
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// 如果写入失败，检查文件是否已存在
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if _, statErr := os.Stat(tmpPath); statErr == nil {
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cachedFrpcPath = tmpPath
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return tmpPath, nil
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}
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}
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// 最后尝试从系统 PATH 查找
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path, err := exec.LookPath("frpc")
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if err == nil {
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cachedFrpcPath = path
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return path, nil
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}
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return "", fmt.Errorf("未找到 frpc 文件")
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}
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