51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
package auth
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import (
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"errors"
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"sync/atomic"
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"git.pcux.cn/xuans/Smail/db"
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"git.pcux.cn/xuans/Smail/models"
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"git.pcux.cn/xuans/Smail/services/credentials"
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)
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// ProtocolSession 保存不可变身份与凭据快照，拒绝后的连接不能通过重新启用恢复权限。
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type ProtocolSession struct {
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user models.User
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grant *credentials.ProtocolGrant
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invalid atomic.Bool
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}
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func AuthenticateProtocolSession(protocol, remoteAddress, account, plain string) (*models.User, *ProtocolSession, error) {
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var grant *credentials.ProtocolGrant
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user, err := authenticateProtocol(protocol, remoteAddress, account, plain, &grant)
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if err != nil {
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return nil, nil, err
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}
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session := &ProtocolSession{user: *user, grant: grant}
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if err := session.Check(); err != nil {
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return nil, nil, err
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}
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return user, session, nil
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}
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// Check 在每条数据命令前复核授权；数据库故障或切换时也不沿用旧权限。
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func (s *ProtocolSession) Check() error {
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denied := errors.New("protocol authorization revoked")
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if s == nil || s.invalid.Load() {
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return denied
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}
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engine := db.Instance
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if engine != nil && s.grant.Valid(engine) {
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var user models.User
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has, err := engine.ID(s.user.ID).Where("disabled = 0").Get(&user)
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if err == nil && has && user.Account == s.user.Account && user.Password == s.user.Password &&
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user.SessionVersion == s.user.SessionVersion && user.SecurityVersion == s.user.SecurityVersion &&
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user.EffectiveRole() == s.user.EffectiveRole() && user.MustChangePassword == s.user.MustChangePassword && !s.invalid.Load() {
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return nil
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}
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}
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s.invalid.Store(true)
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return denied
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}
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