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Diffstat (limited to 'srv/src/mailinglist/mailer.go')
-rw-r--r--srv/src/mailinglist/mailer.go143
1 files changed, 0 insertions, 143 deletions
diff --git a/srv/src/mailinglist/mailer.go b/srv/src/mailinglist/mailer.go
deleted file mode 100644
index 07d6c3a..0000000
--- a/srv/src/mailinglist/mailer.go
+++ /dev/null
@@ -1,143 +0,0 @@
-package mailinglist
-
-import (
- "context"
- "errors"
- "strings"
-
- "github.com/emersion/go-sasl"
- "github.com/emersion/go-smtp"
- "github.com/mediocregopher/blog.mediocregopher.com/srv/cfg"
- "github.com/mediocregopher/mediocre-go-lib/v2/mctx"
- "github.com/mediocregopher/mediocre-go-lib/v2/mlog"
-)
-
-// Mailer is used to deliver emails to arbitrary recipients.
-type Mailer interface {
- Send(to, subject, body string) error
-}
-
-type logMailer struct {
- logger *mlog.Logger
-}
-
-// NewLogMailer returns a Mailer instance which will not actually send any
-// emails, it will only log to the given Logger when Send is called.
-func NewLogMailer(logger *mlog.Logger) Mailer {
- return &logMailer{logger: logger}
-}
-
-func (l *logMailer) Send(to, subject, body string) error {
- ctx := mctx.Annotate(context.Background(),
- "to", to,
- "subject", subject,
- )
- l.logger.Info(ctx, "would have sent email")
- return nil
-}
-
-// NullMailer acts as a Mailer but actually just does nothing.
-var NullMailer = nullMailer{}
-
-type nullMailer struct{}
-
-func (nullMailer) Send(to, subject, body string) error {
- return nil
-}
-
-// MailerParams are used to initialize a new Mailer instance.
-type MailerParams struct {
- SMTPAddr string
-
- // Optional, if not given then no auth is attempted.
- SMTPAuth sasl.Client
-
- // The sending email address to use for all emails being sent.
- SendAs string
-}
-
-// SetupCfg implement the cfg.Cfger interface.
-func (m *MailerParams) SetupCfg(cfg *cfg.Cfg) {
-
- cfg.StringVar(&m.SMTPAddr, "ml-smtp-addr", "", "Address of SMTP server to use for sending emails for the mailing list")
- smtpAuthStr := cfg.String("ml-smtp-auth", "", "user:pass to use when authenticating with the mailing list SMTP server. The given user will also be used as the From address.")
-
- cfg.OnInit(func(ctx context.Context) error {
- if m.SMTPAddr == "" {
- return nil
- }
-
- smtpAuthParts := strings.SplitN(*smtpAuthStr, ":", 2)
- if len(smtpAuthParts) < 2 {
- return errors.New("invalid -ml-smtp-auth")
- }
-
- m.SMTPAuth = sasl.NewPlainClient("", smtpAuthParts[0], smtpAuthParts[1])
- m.SendAs = smtpAuthParts[0]
-
- return nil
- })
-}
-
-// Annotate implements mctx.Annotator interface.
-func (m *MailerParams) Annotate(a mctx.Annotations) {
- if m.SMTPAddr == "" {
- return
- }
-
- a["smtpAddr"] = m.SMTPAddr
- a["smtpSendAs"] = m.SendAs
-}
-
-type mailer struct {
- params MailerParams
-}
-
-// NewMailer initializes and returns a Mailer which will use an external SMTP
-// server to deliver email.
-func NewMailer(params MailerParams) Mailer {
- return &mailer{
- params: params,
- }
-}
-
-func (m *mailer) Send(to, subject, body string) error {
-
- msg := []byte("From: " + m.params.SendAs + "\r\n" +
- "To: " + to + "\r\n" +
- "Subject: " + subject + "\r\n\r\n" +
- body + "\r\n")
-
- c, err := smtp.Dial(m.params.SMTPAddr)
- if err != nil {
- return err
- }
- defer c.Close()
-
- if err = c.Auth(m.params.SMTPAuth); err != nil {
- return err
- }
-
- if err = c.Mail(m.params.SendAs, nil); err != nil {
- return err
- }
-
- if err = c.Rcpt(to); err != nil {
- return err
- }
-
- w, err := c.Data()
- if err != nil {
- return err
- }
-
- if _, err = w.Write(msg); err != nil {
- return err
- }
-
- if err = w.Close(); err != nil {
- return err
- }
-
- return c.Quit()
-}