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package model
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import (
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"crypto/md5"
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"crypto/sha1"
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"encoding/hex"
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"encoding/json"
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"strings"
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"github.com/cloudreve/Cloudreve/v3/pkg/util"
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"github.com/jinzhu/gorm"
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"github.com/pkg/errors"
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)
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const (
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// Active 账户正常状态
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Active = iota
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// NotActivicated 未激活
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NotActivicated
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// Baned 被封禁
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Baned
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// OveruseBaned 超额使用被封禁
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OveruseBaned
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)
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// User 用户模型
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type User struct {
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// 表字段
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gorm.Model
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Email string `gorm:"type:varchar(100);unique_index"`
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Nick string `gorm:"size:50"`
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Password string `json:"-"`
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Status int
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GroupID uint
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Storage uint64
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TwoFactor string
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Avatar string
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Options string `json:"-",gorm:"type:text"`
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Authn string `gorm:"type:text"`
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// 关联模型
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Group Group `gorm:"save_associations:false:false"`
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Policy Policy `gorm:"PRELOAD:false,association_autoupdate:false"`
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// 数据库忽略字段
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OptionsSerialized UserOption `gorm:"-"`
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}
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// UserOption 用户个性化配置字段
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type UserOption struct {
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ProfileOff bool `json:"profile_off,omitempty"`
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PreferredTheme string `json:"preferred_theme,omitempty"`
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}
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// Root 获取用户的根目录
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func (user *User) Root() (*Folder, error) {
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var folder Folder
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err := DB.Where("parent_id is NULL AND owner_id = ?", user.ID).First(&folder).Error
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return &folder, err
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}
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// DeductionStorage 减少用户已用容量
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func (user *User) DeductionStorage(size uint64) bool {
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if size == 0 {
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return true
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}
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if size <= user.Storage {
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user.Storage -= size
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DB.Model(user).Update("storage", gorm.Expr("storage - ?", size))
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return true
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}
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// 如果要减少的容量超出已用容量，则设为零
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user.Storage = 0
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DB.Model(user).Update("storage", 0)
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return false
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}
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// IncreaseStorage 检查并增加用户已用容量
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func (user *User) IncreaseStorage(size uint64) bool {
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if size == 0 {
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return true
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}
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if size <= user.GetRemainingCapacity() {
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user.Storage += size
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DB.Model(user).Update("storage", gorm.Expr("storage + ?", size))
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return true
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}
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return false
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}
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// IncreaseStorageWithoutCheck 忽略可用容量，增加用户已用容量
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func (user *User) IncreaseStorageWithoutCheck(size uint64) {
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if size == 0 {
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return
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}
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user.Storage += size
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DB.Model(user).Update("storage", gorm.Expr("storage + ?", size))
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}
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// GetRemainingCapacity 获取剩余配额
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func (user *User) GetRemainingCapacity() uint64 {
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total := user.Group.MaxStorage
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if total <= user.Storage {
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return 0
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}
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return total - user.Storage
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}
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// GetPolicyID 获取用户当前的存储策略ID
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func (user *User) GetPolicyID(prefer uint) uint {
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if len(user.Group.PolicyList) > 0 {
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return user.Group.PolicyList[0]
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}
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return 0
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}
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// GetUserByID 用ID获取用户
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func GetUserByID(ID interface{}) (User, error) {
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var user User
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result := DB.Set("gorm:auto_preload", true).First(&user, ID)
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return user, result.Error
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}
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// GetActiveUserByID 用ID获取可登录用户
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func GetActiveUserByID(ID interface{}) (User, error) {
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var user User
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result := DB.Set("gorm:auto_preload", true).Where("status = ?", Active).First(&user, ID)
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return user, result.Error
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}
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// GetActiveUserByOpenID 用OpenID获取可登录用户
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func GetActiveUserByOpenID(openid string) (User, error) {
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var user User
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result := DB.Set("gorm:auto_preload", true).Where("status = ? and open_id = ?", Active, openid).Find(&user)
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return user, result.Error
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}
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// GetUserByEmail 用Email获取用户
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func GetUserByEmail(email string) (User, error) {
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var user User
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result := DB.Set("gorm:auto_preload", true).Where("status = ? and email = ?", Active, email).First(&user)
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return user, result.Error
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}
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// NewUser 返回一个新的空 User
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func NewUser() User {
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options := UserOption{}
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return User{
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OptionsSerialized: options,
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}
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}
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// BeforeSave Save用户前的钩子
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func (user *User) BeforeSave() (err error) {
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err = user.SerializeOptions()
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return err
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}
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// AfterCreate 创建用户后的钩子
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func (user *User) AfterCreate(tx *gorm.DB) (err error) {
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// 创建用户的默认根目录
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defaultFolder := &Folder{
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Name: "/",
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OwnerID: user.ID,
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}
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tx.Create(defaultFolder)
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return err
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}
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// AfterFind 找到用户后的钩子
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func (user *User) AfterFind() (err error) {
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// 解析用户设置到OptionsSerialized
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if user.Options != "" {
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err = json.Unmarshal([]byte(user.Options), &user.OptionsSerialized)
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}
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// 预加载存储策略
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user.Policy, _ = GetPolicyByID(user.GetPolicyID(0))
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return err
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}
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//SerializeOptions 将序列后的Option写入到数据库字段
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func (user *User) SerializeOptions() (err error) {
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optionsValue, err := json.Marshal(&user.OptionsSerialized)
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user.Options = string(optionsValue)
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return err
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}
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// CheckPassword 根据明文校验密码
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func (user *User) CheckPassword(password string) (bool, error) {
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// 根据存储密码拆分为 Salt 和 Digest
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passwordStore := strings.Split(user.Password, ":")
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if len(passwordStore) != 2 && len(passwordStore) != 3 {
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return false, errors.New("Unknown password type")
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}
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// 兼容V2密码，升级后存储格式为: md5:$HASH:$SALT
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if len(passwordStore) == 3 {
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if passwordStore[0] != "md5" {
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return false, errors.New("Unknown password type")
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}
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hash := md5.New()
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_, err := hash.Write([]byte(passwordStore[2] + password))
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bs := hex.EncodeToString(hash.Sum(nil))
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if err != nil {
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return false, err
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}
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return bs == passwordStore[1], nil
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}
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//计算 Salt 和密码组合的SHA1摘要
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hash := sha1.New()
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_, err := hash.Write([]byte(password + passwordStore[0]))
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bs := hex.EncodeToString(hash.Sum(nil))
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if err != nil {
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return false, err
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}
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return bs == passwordStore[1], nil
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}
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// SetPassword 根据给定明文设定 User 的 Password 字段
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func (user *User) SetPassword(password string) error {
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//生成16位 Salt
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salt := util.RandStringRunes(16)
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//计算 Salt 和密码组合的SHA1摘要
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hash := sha1.New()
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_, err := hash.Write([]byte(password + salt))
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bs := hex.EncodeToString(hash.Sum(nil))
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if err != nil {
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return err
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}
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//存储 Salt 值和摘要， ":"分割
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user.Password = salt + ":" + string(bs)
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return nil
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}
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// NewAnonymousUser 返回一个匿名用户
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func NewAnonymousUser() *User {
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user := User{}
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user.Policy.Type = "anonymous"
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user.Group, _ = GetGroupByID(3)
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return &user
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}
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// IsAnonymous 返回是否为未登录用户
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func (user *User) IsAnonymous() bool {
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return user.ID == 0
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}
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// SetStatus 设定用户状态
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func (user *User) SetStatus(status int) {
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DB.Model(&user).Update("status", status)
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}
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// Update 更新用户
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func (user *User) Update(val map[string]interface{}) error {
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return DB.Model(user).Updates(val).Error
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}
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// UpdateOptions 更新用户偏好设定
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func (user *User) UpdateOptions() error {
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if err := user.SerializeOptions(); err != nil {
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return err
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}
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return user.Update(map[string]interface{}{"options": user.Options})
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}
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