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model.go
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model.go
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/*
* MIT License
*
* Copyright (c) 2020 Nicolas JUHEL
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
package smtp
import (
"crypto/tls"
"net"
"net/smtp"
"strings"
"sync"
smtpcf "github.com/nabbar/golib/smtp/config"
)
type smtpClient struct {
mut sync.Mutex
con net.Conn
cli *smtp.Client
tls *tls.Config
cfg smtpcf.SMTP
}
func (s *smtpClient) _ValidateLine(line string) error {
if strings.ContainsAny(line, "\n\r") {
return ErrorSMTPLineCRLF.Error(nil)
}
return nil
}
func (s *smtpClient) _close() {
if s.cli != nil {
if e := s.cli.Quit(); e != nil {
_ = s.cli.Close()
}
s.cli = nil
}
if s.con != nil {
_ = s.con.Close()
s.con = nil
}
}
// Clone is used to clone current smtp pointer to a new one with same config.
func (s *smtpClient) Clone() SMTP {
return &smtpClient{
mut: sync.Mutex{},
con: nil,
cli: nil,
tls: s.tls,
cfg: s.cfg,
}
}
// Close Terminate SMTP negotiation client and close connection.
func (s *smtpClient) Close() {
s.mut.Lock()
defer s.mut.Unlock()
s._close()
}
// UpdConfig is used to update the config & TLS Config for an instance.
func (s *smtpClient) UpdConfig(cfg smtpcf.SMTP, tslConfig *tls.Config) {
s._close()
s.mut.Lock()
defer s.mut.Unlock()
s.cfg = cfg
s.tls = tslConfig
}