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interface.go
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interface.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 (
"context"
"crypto/tls"
"io"
"net/smtp"
"sync"
libctx "github.com/nabbar/golib/context"
montps "github.com/nabbar/golib/monitor/types"
smtpcf "github.com/nabbar/golib/smtp/config"
libver "github.com/nabbar/golib/version"
)
type SMTP interface {
Clone() SMTP
Close()
UpdConfig(cfg smtpcf.SMTP, tslConfig *tls.Config)
Client(ctx context.Context) (*smtp.Client, error)
Check(ctx context.Context) error
Send(ctx context.Context, from string, to []string, data io.WriterTo) error
Monitor(ctx libctx.FuncContext, vrs libver.Version) (montps.Monitor, error)
}
// New return a SMTP interface to operation negotiation with a SMTP server.
// the dsn parameter must be string like this '[user[:password]@][net[(addr)]]/tlsmode[?param1=value1¶mN=valueN]".
// - params available are : ServerName (string), SkipVerify (boolean).
// - tls mode acceptable are : starttls, tls, <any other value to no tls/startls>.
// - net acceptable are : tcp4, tcp6, unix.
func New(cfg smtpcf.SMTP, tlsConfig *tls.Config) (SMTP, error) {
if tlsConfig == nil {
/* #nosec */
//nolint #nosec
tlsConfig = &tls.Config{}
}
if cfg == nil {
return nil, ErrorParamEmpty.Error(nil)
} else {
return &smtpClient{
mut: sync.Mutex{},
cfg: cfg,
tls: tlsConfig,
}, nil
}
}