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| func sendMail(addr string, auth smtp.Auth, from string, to []string, msg []byte) error {
var client *smtp.Client
var err error
if client, err = smtp.Dial(addr); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
defer client.Close()
if err = client.Hello("localhost"); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
if auth != nil {
if err = client.Auth(auth); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
}
for _, addr := range to {
if err = client.Reset(); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
if err = mail(client, from); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
if err = client.Rcpt(addr); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
var w io.WriteCloser
if w, err = client.Data(); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
if _, err = w.Write([]byte(msg)); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
w.Close()
}
if err = client.Quit(); err != nil {
fmt.Fprintf(os.Stderr, "Error: %v\n", err)
os.Exit(1)
}
return nil
}
func mail(c *smtp.Client, from string) error {
cmdStr := "MAIL FROM:<%s> XVERP"
// 8BITMIMEは考慮しない
_, _, err := cmd(c, 250, cmdStr, from)
return err
}
func cmd(c *smtp.Client, expectCode int, format string, args ...interface{}) (int, string, error) {
id, err := c.Text.Cmd(format, args...)
if err != nil {
return 0, "", err
}
c.Text.StartResponse(id)
defer c.Text.EndResponse(id)
code, msg, err := c.Text.ReadResponse(expectCode)
return code, msg, err
}
|
