feat: 项目初始化

.gitignore

@@ -0,0 +1,3 @@
+bin
+config.*
+.idea

Makefile

@@ -0,0 +1,23 @@
+APP_NAME = netctl
+SRC = .
+OUTPUT = ./bin/$(APP_NAME).exe
+GO = go
+
+# 获取 Git commit
+GIT_COMMIT := $(shell git rev-parse --short HEAD 2>/dev/null || echo none)
+# 获取当前时间 UTC
+BUILD_TIME := $(shell date -u +%Y-%m-%dT%H:%M:%SZ)
+
+.PHONY: build run clean
+
+# 编译命令
+build:
+	$(GO) build -ldflags "-X 'netcli/cmd.Version=1.0.0' -X 'netcli/cmd.Commit=$(GIT_COMMIT)' -X 'netcli/cmd.BuildTime=$(BUILD_TIME)'" -o $(OUTPUT) $(SRC)
+
+# 直接运行
+run:
+	$(GO) run -ldflags "-X 'netcli/cmd.Version=1.0.0' -X 'netcli/cmd.Commit=$(GIT_COMMIT)' -X 'netcli/cmd.BuildTime=$(BUILD_TIME)'" $(SRC)
+
+# 清理编译文件
+clean:
+	rm -f $(OUTPUT)

cmd/dhcp.go

@@ -0,0 +1,53 @@
+package cmd
+
+import (
+	"fmt"
+	stdnet "net"
+
+	"netcli/internal/constants"
+	"netcli/internal/net"
+
+	"github.com/spf13/cobra"
+)
+
+// dhcpCmd represents the dhcp command
+var dhcpCmd = &cobra.Command{
+	Use:   "dhcp",
+	Short: "将指定网卡改为 DHCP 自动获取 IP",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		// 检查管理员权限
+		if !net.IsAdmin() {
+			fmt.Println("程序需要管理员权限，尝试提升...")
+			return net.RunAsAdmin()
+		}
+
+		// 获取所有网卡
+		ifaces, err := stdnet.Interfaces()
+		if err != nil {
+			return fmt.Errorf("获取网卡失败: %w", err)
+		}
+
+		var nics []net.NetIfWrap
+		for _, i := range ifaces {
+			nics = append(nics, net.NetIfWrap{i})
+		}
+
+		// 用户选择网卡
+		nic, err := net.ChooseNic(nics, constants.DefaultDHCPMsg)
+		if err != nil {
+			return err
+		}
+
+		// 执行 netsh 命令设置 DHCP
+		if err := net.SetDHCP(nic); err != nil {
+			return err
+		}
+
+		fmt.Printf("网卡 %s 已设置为 DHCP 自动获取 IP\n", nic.Name)
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(dhcpCmd)
+}

cmd/root.go

@@ -0,0 +1,46 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+
+	netmod "netcli/internal/net"
+
+	"github.com/spf13/cobra"
+)
+
+// rootCmd represents the base command when called without any subcommands
+var rootCmd = &cobra.Command{
+	Use:   "netctl",
+	Short: "网络切换工具",
+	Long:  "netctl 是一个用于切换网卡静态IP/DHCP的 CLI 工具",
+}
+
+// Execute adds all child commands to the root command and sets flags appropriately.
+// This is called by main.main().
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		os.Exit(1)
+	}
+}
+
+// 通用命令运行函数
+func run(args ...string) {
+	cmd := exec.Command(args[0], args[1:]...)
+	out, err := cmd.CombinedOutput()
+	fmt.Println(string(out))
+	if err != nil {
+		panic(err)
+	}
+}
+
+// 判断当前程序是否管理员
+func IsAdmin() bool {
+	return netmod.IsAdmin()
+}
+
+// 提升管理员权限
+func RunAsAdmin() error {
+	return netmod.RunAsAdmin()
+}

cmd/static.go

@@ -0,0 +1,70 @@
+package cmd
+
+import (
+	"fmt"
+	stdnet "net"
+
+	"netcli/config"
+	"netcli/internal/constants"
+	"netcli/internal/model"
+	netmod "netcli/internal/net"
+
+	"github.com/AlecAivazis/survey/v2"
+	"github.com/spf13/cobra"
+)
+
+var staticCmd = &cobra.Command{
+	Use:   "static",
+	Short: "设置静态IP",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		// 管理员权限检查
+		if !netmod.IsAdmin() {
+			fmt.Println("程序需要管理员权限，尝试提升...")
+			return netmod.RunAsAdmin()
+		}
+
+		// 获取本机网卡
+		ifaces, _ := stdnet.Interfaces()
+		var nics []netmod.NetIfWrap
+		for _, i := range ifaces {
+			nics = append(nics, netmod.NetIfWrap{i})
+		}
+
+		nic, _ := netmod.ChooseNic(nics, constants.DefaultStaticMsg)
+
+		// 加载配置文件
+		cfg, _ := config.LoadConfig(constants.DefaultConfig)
+		var rooms []model.ClassRoom
+		if cfg != nil && len(cfg.ClassRooms) > 0 {
+			rooms = cfg.ClassRooms
+		} else {
+			rooms = config.DefaultClassRooms()
+		}
+
+		// 用户选择教室
+		var roomNames []string
+		for _, r := range rooms {
+			roomNames = append(roomNames, r.Name)
+		}
+
+		var choice string
+		survey.AskOne(&survey.Select{Message: "请选择教室:", Options: roomNames}, &choice)
+
+		var room model.ClassRoom
+		for _, r := range rooms {
+			if r.Name == choice {
+				room = r
+				break
+			}
+		}
+
+		fmt.Printf("正在设置静态IP...\n网卡: %s\nIP: %s\nMask: %s\nGateway: %s\n",
+			nic.Name, room.Addr, room.Mask, room.Gateway)
+
+		return netmod.SetStaticIP(nic, room.Addr, room.Mask, room.Gateway)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(staticCmd)
+}

cmd/version.go

@@ -0,0 +1,28 @@
+package cmd
+
+import (
+	"fmt"
+	"github.com/spf13/cobra"
+)
+
+// 编译时注入变量
+var (
+	Version   = "dev" // 默认版本
+	Commit    = "none"
+	BuildTime = "unknown"
+)
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "显示软件版本信息",
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Println("netctl - 网络切换工具")
+		fmt.Printf("Version: %s\n", Version)
+		fmt.Printf("Commit: %s\n", Commit)
+		fmt.Printf("BuildTime: %s\n", BuildTime)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(versionCmd)
+}

go.mod

@@ -0,0 +1,27 @@
+module netcli
+
+go 1.24
+
+require (
+	github.com/AlecAivazis/survey/v2 v2.3.7 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
+	github.com/mattn/go-colorable v0.1.2 // indirect
+	github.com/mattn/go-isatty v0.0.8 // indirect
+	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/sagikazarmark/locafero v0.11.0 // indirect
+	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/spf13/cast v1.10.0 // indirect
+	github.com/spf13/cobra v1.10.1 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
+	github.com/spf13/viper v1.21.0 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/sys v0.29.0 // indirect
+	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
+	golang.org/x/text v0.28.0 // indirect
+)

go.sum

@@ -0,0 +1,83 @@
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+github.com/Netflix/go-expect v0.0.0-20220104043353-73e0943537d2/go.mod h1:HBCaDeC1lPdgDeDbhX8XFpy1jqjK0IBG8W5K+xYqA0w=
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+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/constants/constants.go

@@ -0,0 +1,8 @@
+package constants
+
+const (
+	AppName          = "netctl"
+	DefaultConfig    = "config.yaml"
+	DefaultDHCPMsg   = "请选择网卡以使用 DHCP"
+	DefaultStaticMsg = "请选择网卡以设置静态 IP"
+)

internal/model/classroom.go

@@ -0,0 +1,13 @@
+package model
+
+type ClassRoom struct {
+	ID      string
+	Name    string
+	Addr    string
+	Mask    string
+	Gateway string
+}
+
+func (c ClassRoom) GetName() string {
+	return c.Name
+}

internal/model/named.go

@@ -0,0 +1,5 @@
+package model
+
+type Named interface {
+	GetName() string
+}

internal/net/nic.go

@@ -0,0 +1,96 @@
+package net
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"os/exec"
+
+	"github.com/AlecAivazis/survey/v2"
+	"golang.org/x/sys/windows"
+)
+
+type NetIfWrap struct {
+	net.Interface
+}
+
+func (n NetIfWrap) GetName() string {
+	return n.Interface.Name
+}
+
+// 选择网卡
+func ChooseNic(nics []NetIfWrap, message string) (NetIfWrap, error) {
+	var names []string
+	for _, nic := range nics {
+		names = append(names, nic.Name)
+	}
+	var choice string
+	err := survey.AskOne(&survey.Select{
+		Message: message,
+		Options: names,
+	}, &choice)
+	if err != nil {
+		return NetIfWrap{}, err
+	}
+	for _, nic := range nics {
+		if nic.Name == choice {
+			return nic, nil
+		}
+	}
+	return NetIfWrap{}, fmt.Errorf("未找到网卡: %s", choice)
+}
+
+// 设置静态IP
+func SetStaticIP(nic NetIfWrap, addr, mask, gateway string) error {
+	cmd := exec.Command("netsh", "interface", "ip", "set", "address",
+		fmt.Sprintf("name=%s", nic.Name),
+		"static", addr, mask, gateway)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("netsh失败: %v, 输出: %s", err, string(out))
+	}
+	return nil
+}
+
+// 设置 DHCP
+func SetDHCP(nic NetIfWrap) error {
+	cmd := exec.Command("netsh", "interface", "ip", "set", "address",
+		fmt.Sprintf("name=%s", nic.Name), "dhcp")
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Errorf("netsh失败: %v, 输出: %s", err, string(out))
+	}
+	return nil
+}
+
+// Windows 管理员检查
+func IsAdmin() bool {
+	sid, _ := windows.CreateWellKnownSid(windows.WinBuiltinAdministratorsSid)
+	token := windows.Token(0)
+	member, _ := token.IsMember(sid)
+	return member
+}
+
+// 提升管理员权限
+func RunAsAdmin() error {
+	exe, _ := exec.LookPath(os.Args[0])
+	args := os.Args[1:]
+	cmd := exec.Command("powershell",
+		"-Command",
+		fmt.Sprintf(`Start-Process -FilePath "%s" -ArgumentList %s -Verb RunAs`, exe, joinArgsArray(args)),
+	)
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	return cmd.Run()
+}
+
+func joinArgsArray(args []string) string {
+	res := ""
+	for i, a := range args {
+		if i > 0 {
+			res += ","
+		}
+		res += fmt.Sprintf("'%s'", a)
+	}
+	return res
+}

main.go

@@ -0,0 +1,11 @@
+/*
+Copyright © 2025 NAME HERE <EMAIL ADDRESS>
+
+*/
+package main
+
+import "netcli/cmd"
+
+func main() {
+	cmd.Execute()
+}