62 lines
1.8 KiB
Go
62 lines
1.8 KiB
Go
package model
|
||
|
||
import (
|
||
"crypto/rand"
|
||
"fmt"
|
||
"math/big"
|
||
|
||
"golang.org/x/crypto/bcrypt"
|
||
"gorm.io/gorm"
|
||
)
|
||
|
||
// 定义随机字符集
|
||
const passwordChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
|
||
|
||
// Yggdrasil ygg密码与用户id绑定
|
||
type Yggdrasil struct {
|
||
ID int64 `gorm:"column:id;primaryKey;not null" json:"id"`
|
||
Password string `gorm:"column:password;type:varchar(255);not null" json:"-"` // 加密后的密码,不返回给前端
|
||
// 关联 - Yggdrasil的ID引用User的ID,但不自动创建外键约束(避免循环依赖)
|
||
User *User `gorm:"foreignKey:ID;references:ID;constraint:OnDelete:CASCADE,OnUpdate:CASCADE" json:"user,omitempty"`
|
||
}
|
||
|
||
func (Yggdrasil) TableName() string { return "yggdrasil" }
|
||
|
||
// AfterCreate User创建后自动同步生成Yggdrasil密码记录
|
||
func (u *User) AfterCreate(tx *gorm.DB) error {
|
||
// 生成随机明文密码
|
||
plainPassword := GenerateRandomPassword(16)
|
||
|
||
// 使用 bcrypt 加密密码
|
||
hashedPassword, err := bcrypt.GenerateFromPassword([]byte(plainPassword), bcrypt.DefaultCost)
|
||
if err != nil {
|
||
return fmt.Errorf("密码加密失败: %w", err)
|
||
}
|
||
|
||
// 创建Yggdrasil记录(存储加密后的密码)
|
||
ygg := Yggdrasil{
|
||
ID: u.ID,
|
||
Password: string(hashedPassword),
|
||
}
|
||
|
||
if err := tx.Create(&ygg).Error; err != nil {
|
||
return fmt.Errorf("同步生成Yggdrasil密码失败: %w", err)
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// GenerateRandomPassword 生成指定长度的安全随机字符串
|
||
func GenerateRandomPassword(length int) string {
|
||
b := make([]byte, length)
|
||
for i := range b {
|
||
num, err := rand.Int(rand.Reader, big.NewInt(int64(len(passwordChars))))
|
||
if err != nil {
|
||
// 如果安全随机数生成失败,使用固定值(极端情况下的降级处理)
|
||
b[i] = passwordChars[0]
|
||
continue
|
||
}
|
||
b[i] = passwordChars[num.Int64()]
|
||
}
|
||
return string(b)
|
||
}
|