mirror of
https://github.com/semaphoreui/semaphore.git
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159 lines
2.0 KiB
Go
159 lines
2.0 KiB
Go
package mailer
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import (
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"bytes"
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"net"
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"net/smtp"
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"strings"
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"text/template"
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"time"
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)
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const (
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mailerBase = "MIME-version: 1.0\r\n" +
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"Content-Type: text/html; charset=UTF-8\r\n" +
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//"Content-Transfer-Encoding: quoted-printable\r\n" +
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"Date: {{ .Date }}\r\n" +
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"To: {{ .To }}\r\n" +
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"From: {{ .From }}\r\n" +
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"Subject: {{ .Subject }}\r\n\r\n" +
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"{{ .Body }}"
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)
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var (
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r = strings.NewReplacer(
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"\r\n", "",
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"\r", "",
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"\n", "",
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"%0a", "",
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"%0d", "",
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)
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)
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// Send simply sends the defined mail via SMTP.
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func Send(
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secure bool,
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host string,
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port string,
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username,
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password,
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from,
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to,
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subject string,
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content string,
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) error {
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body := bytes.NewBufferString("")
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tpl, err := template.New("").Parse(mailerBase)
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if err != nil {
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return err
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}
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err = tpl.Execute(body, struct {
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Date string
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To string
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From string
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Subject string
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Body string
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}{
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Date: time.Now().UTC().Format(time.RFC1123),
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To: r.Replace(to),
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From: r.Replace(from),
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Subject: r.Replace(subject),
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Body: content,
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})
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if err != nil {
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return err
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}
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if secure {
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return plainauth(
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host,
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port,
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username,
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password,
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from,
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to,
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body,
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)
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}
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return anonymous(
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host,
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port,
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from,
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to,
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body,
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)
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}
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func plainauth(
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host string,
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port string,
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username string,
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password string,
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from string,
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to string,
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body *bytes.Buffer,
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) error {
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return smtp.SendMail(
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net.JoinHostPort(
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host,
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port,
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),
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smtp.PlainAuth(
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"",
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username,
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password,
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host,
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),
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from,
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[]string{to},
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body.Bytes(),
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)
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}
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func anonymous(
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host string,
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port string,
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from string,
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to string,
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body *bytes.Buffer,
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) error {
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c, err := smtp.Dial(
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net.JoinHostPort(
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host,
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port,
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),
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)
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if err != nil {
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return err
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}
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defer c.Close()
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if err := c.Mail(r.Replace(from)); err != nil {
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return err
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}
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if err = c.Rcpt(r.Replace(to)); err != nil {
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return err
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}
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w, err := c.Data()
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if err != nil {
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return err
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}
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defer w.Close()
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if _, err := body.WriteTo(w); err != nil {
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return err
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}
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return nil
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}
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