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2026-07-27 00:00:27 +08:00
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package main
import (
"crypto/rand"
"database/sql"
"encoding/hex"
"fmt"
"io"
"log"
"os"
"time"
_ "modernc.org/sqlite"
)
var DB *sql.DB
// ============================================================
// 数据库版本常量
// ============================================================
const SchemaVersion = "2.0.0"
// ============================================================
// 数据模型
// ============================================================
// GlobalConfig frps 全局配置
type GlobalConfig struct {
ID int `json:"id"`
BindPort int `json:"bindPort"`
Token string `json:"token"`
LogLevel string `json:"logLevel"`
LogMaxDays int `json:"logMaxDays"`
TcpMux bool `json:"tcpMux"`
}
// Client 客户端连接记录
type Client struct {
ID int `json:"id"`
Name string `json:"name"`
OS string `json:"os"`
Arch string `json:"arch"`
Version string `json:"version"`
Status string `json:"status"`
ConnTime string `json:"connTime"`
UpdatedAt string `json:"updatedAt"`
}
// User 用户表
type User struct {
ID int `json:"id"`
Username string `json:"username"`
PasswordHash string `json:"-"`
CreatedAt string `json:"createdAt"`
}
// ============================================================
// 数据库初始化
// ============================================================
func InitDB() error {
var err error
DB, err = sql.Open("sqlite", "./frps-console.db")
if err != nil {
return err
}
if err := createTables(); err != nil {
return err
}
if err := runMigrations(); err != nil {
return err
}
if err := ensureJwtSecret(); err != nil {
return err
}
log.Println("✅ 数据库初始化完成 (Schema v" + SchemaVersion + ")")
return nil
}
// ============================================================
// 建表
// ============================================================
func createTables() error {
// 用户表
_, err := DB.Exec(`
CREATE TABLE IF NOT EXISTS users (
id INTEGER PRIMARY KEY AUTOINCREMENT,
username TEXT UNIQUE NOT NULL,
password_hash TEXT NOT NULL,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
)
`)
if err != nil {
return err
}
// 全局配置表(frps 专用)
_, err = DB.Exec(`
CREATE TABLE IF NOT EXISTS global_config (
id INTEGER PRIMARY KEY CHECK (id = 1),
bind_port INTEGER NOT NULL DEFAULT 9358,
token TEXT NOT NULL DEFAULT 'CHANGE_ME',
log_level TEXT NOT NULL DEFAULT 'info',
log_max_days INTEGER NOT NULL DEFAULT 3,
tcp_mux INTEGER NOT NULL DEFAULT 1,
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
)
`)
if err != nil {
return err
}
// 客户端记录表
_, err = DB.Exec(`
CREATE TABLE IF NOT EXISTS clients (
id INTEGER PRIMARY KEY AUTOINCREMENT,
name TEXT,
os TEXT,
arch TEXT,
version TEXT,
status TEXT,
conn_time DATETIME,
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
)
`)
if err != nil {
return err
}
// 应用配置表
_, err = DB.Exec(`
CREATE TABLE IF NOT EXISTS app_config (
key TEXT PRIMARY KEY,
value TEXT NOT NULL,
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
)
`)
if err != nil {
return err
}
// 初始化默认配置
var count int
DB.QueryRow("SELECT COUNT(*) FROM global_config").Scan(&count)
if count == 0 {
_, err = DB.Exec(`
INSERT INTO global_config (
id, bind_port, token, log_level, log_max_days, tcp_mux
) VALUES (1, 9358, 'CHANGE_ME', 'info', 3, 1)
`)
if err != nil {
return err
}
log.Println("✅ 全局配置初始化完成")
}
return nil
}
// ============================================================
// 迁移引擎
// ============================================================
func getSchemaVersion() string {
var version string
err := DB.QueryRow("SELECT value FROM app_config WHERE key = 'schema_version'").Scan(&version)
if err != nil {
if err == sql.ErrNoRows {
var count int
DB.QueryRow("SELECT COUNT(*) FROM users").Scan(&count)
if count > 0 {
return "1.0.0"
}
return SchemaVersion
}
return "1.0.0"
}
return version
}
func setSchemaVersion(version string) error {
_, err := DB.Exec(`
INSERT INTO app_config (key, value) VALUES ('schema_version', ?)
ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = CURRENT_TIMESTAMP
`, version)
return err
}
func backupDatabase() (string, error) {
src := "./frps-console.db"
if _, err := os.Stat(src); os.IsNotExist(err) {
return "", nil
}
timestamp := time.Now().Format("20060102_150405")
dst := fmt.Sprintf("./frps-console.db.pre-v%s.%s", SchemaVersion, timestamp)
srcFile, err := os.Open(src)
if err != nil {
return "", fmt.Errorf("打开源数据库失败: %w", err)
}
defer srcFile.Close()
dstFile, err := os.Create(dst)
if err != nil {
return "", fmt.Errorf("创建备份文件失败: %w", err)
}
defer dstFile.Close()
if _, err := io.Copy(dstFile, srcFile); err != nil {
return "", fmt.Errorf("复制数据库失败: %w", err)
}
log.Printf("✅ 数据库备份完成: %s", dst)
return dst, nil
}
func restoreDatabase(backupPath string) error {
srcFile, err := os.Open(backupPath)
if err != nil {
return err
}
defer srcFile.Close()
dstFile, err := os.Create("./frps-console.db")
if err != nil {
return err
}
defer dstFile.Close()
if _, err := io.Copy(dstFile, srcFile); err != nil {
return err
}
log.Printf("✅ 数据库已从备份恢复: %s", backupPath)
return nil
}
func runMigrations() error {
currentVersion := getSchemaVersion()
log.Printf("📌 当前数据库 Schema: %s, 目标版本: %s", currentVersion, SchemaVersion)
if currentVersion != SchemaVersion {
log.Printf("🔄 检测到版本变更 (%s → %s),开始迁移...", currentVersion, SchemaVersion)
backupPath, err := backupDatabase()
if err != nil {
return fmt.Errorf("备份数据库失败: %w", err)
}
if backupPath != "" {
log.Printf("📦 备份文件: %s", backupPath)
}
if err := setSchemaVersion(SchemaVersion); err != nil {
return fmt.Errorf("更新 Schema 版本失败: %w", err)
}
log.Printf("✅ 版本迁移完成")
} else {
log.Println("✅ Schema 已是最新,无需迁移")
}
return nil
}
// ============================================================
// JWT 密钥管理
// ============================================================
func ensureJwtSecret() error {
var value string
err := DB.QueryRow("SELECT value FROM app_config WHERE key = 'jwt_secret'").Scan(&value)
if err == nil && value != "" {
return nil
}
bytes := make([]byte, 32)
if _, err := rand.Read(bytes); err != nil {
return err
}
secret := hex.EncodeToString(bytes)
_, err = DB.Exec(`
INSERT INTO app_config (key, value) VALUES ('jwt_secret', ?)
`, secret)
if err != nil {
return err
}
log.Printf("✅ JWT 密钥已生成")
return nil
}
func GetJwtSecret() (string, error) {
var secret string
err := DB.QueryRow("SELECT value FROM app_config WHERE key = 'jwt_secret'").Scan(&secret)
if err != nil {
return "", err
}
return secret, nil
}
// ============================================================
// 全局配置 CRUD
// ============================================================
func GetGlobalConfig() (*GlobalConfig, error) {
var cfg GlobalConfig
err := DB.QueryRow(`
SELECT id, bind_port, token, log_level, log_max_days, tcp_mux
FROM global_config WHERE id = 1
`).Scan(
&cfg.ID, &cfg.BindPort, &cfg.Token,
&cfg.LogLevel, &cfg.LogMaxDays,
&cfg.TcpMux,
)
if err != nil {
return nil, err
}
cfg.TcpMux = true
return &cfg, nil
}
func UpdateGlobalConfig(cfg *GlobalConfig) error {
_, err := DB.Exec(`
UPDATE global_config SET
bind_port = ?, token = ?, log_level = ?, log_max_days = ?,
tcp_mux = 1,
updated_at = CURRENT_TIMESTAMP
WHERE id = 1
`, cfg.BindPort, cfg.Token, cfg.LogLevel, cfg.LogMaxDays)
return err
}
// ============================================================
// 客户端记录 CRUD
// ============================================================
func SaveClient(client *Client) error {
_, err := DB.Exec(`
INSERT INTO clients (name, os, arch, version, status, conn_time)
VALUES (?, ?, ?, ?, ?, ?)
`, client.Name, client.OS, client.Arch, client.Version, client.Status, client.ConnTime)
return err
}
func GetClients() ([]Client, error) {
rows, err := DB.Query(`
SELECT id, name, os, arch, version, status, conn_time, updated_at
FROM clients ORDER BY id DESC LIMIT 100
`)
if err != nil {
return nil, err
}
defer rows.Close()
var clients []Client
for rows.Next() {
var c Client
err := rows.Scan(&c.ID, &c.Name, &c.OS, &c.Arch, &c.Version, &c.Status, &c.ConnTime, &c.UpdatedAt)
if err != nil {
return nil, err
}
clients = append(clients, c)
}
return clients, rows.Err()
}
// ============================================================
// 用户 CRUD
// ============================================================
func GetUserByUsername(username string) (*User, error) {
var u User
err := DB.QueryRow(`
SELECT id, username, password_hash, created_at
FROM users WHERE username = ?
`, username).Scan(&u.ID, &u.Username, &u.PasswordHash, &u.CreatedAt)
if err != nil {
return nil, err
}
return &u, nil
}
func CreateUser(username, passwordHash string) error {
_, err := DB.Exec(`
INSERT INTO users (username, password_hash) VALUES (?, ?)
`, username, passwordHash)
return err
}
func UpdatePassword(username, passwordHash string) error {
_, err := DB.Exec(`
UPDATE users SET password_hash = ?, updated_at = CURRENT_TIMESTAMP
WHERE username = ?
`, passwordHash, username)
return err
}
func CountUsers() (int, error) {
var count int
err := DB.QueryRow("SELECT COUNT(*) FROM users").Scan(&count)
return count, err
}