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package mailing
import (
"errors"
"github.com/kch42/simpleconf"
"net/smtp"
)
// SMTPMailer is a Mailer implementation that sends mail via an smtp server.
type SMTPMailer struct {
Host string // Host is the expected hostname of the server
Addr string // Addr is the address of the server
UseCRAMMD5 bool
Username string
Password string
}
func (sm SMTPMailer) Mail(to, from string, msg []byte) error {
var auth smtp.Auth
if sm.UseCRAMMD5 {
auth = smtp.CRAMMD5Auth(sm.Username, sm.Password)
} else {
auth = smtp.PlainAuth("", sm.Username, sm.Password, sm.Host)
}
return smtp.SendMail(sm.Addr, auth, from, []string{to}, msg)
}
// SMTPMailerCreator creates an SMTPMailer using configuration values in the [mail] section.
//
// addr - The address of the smtp server (go notation)
// user - Username
// passwd - Password
// crammd5 - Should CRAMMD5 (on) or PLAIN (off) be used?
// host - The expected hostname of the mailserver (can be left out, if crammd5 is on)
//
func SMTPMailerCreator(conf simpleconf.Config) (Mailer, error) {
rv := SMTPMailer{}
var err error
if rv.Addr, err = conf.GetString("mail", "addr"); err != nil {
return rv, errors.New("Missing [mail] addr config")
}
if rv.UseCRAMMD5, err = conf.GetBool("mail", "crammd5"); err != nil {
return rv, errors.New("Missing [mail] crammd5 config")
}
if rv.Username, err = conf.GetString("mail", "user"); err != nil {
return rv, errors.New("Missing [mail] user config")
}
if rv.Password, err = conf.GetString("mail", "passwd"); err != nil {
return rv, errors.New("Missing [mail] passwd config")
}
if !rv.UseCRAMMD5 {
if rv.Host, err = conf.GetString("mail", "host"); err != nil {
return rv, errors.New("Missing [mail] host config")
}
}
return rv, nil
}
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