Full-Stack Developer
8c12783e95
Replaces the gotoolkit helpers with the standard library and the libraries they wrapped: - gotoolkit/encoding TOML wrapper -> pelletier/go-toml/v2 directly, behind a new smtp2shoutrrr.LoadConfig shared by both commands. - gotoolkit/service + gotoolkit/model.Server -> signal.NotifyContext and a concrete *Server whose Start shuts the listener down gracefully when its context is cancelled. Also drops the unused ANONYMOUS SASL client from cmd/sendmail, bumps alpine, golangci-lint and the CI actions, and adds coverage for config loading and the server lifecycle. Closes FMG-2 Co-authored-by: multica-agent <github@multica.ai>
76 lines
2 KiB
Go
76 lines
2 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"log/slog"
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"net/smtp"
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"os"
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"git.nakama.town/fmartingr/smtp2shoutrrr"
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)
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// The PLAIN mechanism name.
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const Plain = "PLAIN"
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type plainClient struct {
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Identity string
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Username string
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Password string
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}
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func (a *plainClient) Start(si *smtp.ServerInfo) (mech string, ir []byte, err error) {
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mech = Plain
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ir = []byte(a.Identity + "\x00" + a.Username + "\x00" + a.Password)
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return
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}
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func (a *plainClient) Next(challenge []byte, b bool) (response []byte, err error) {
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slog.Debug("SASL challenge received", slog.String("challenge", string(challenge)))
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return nil, nil
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}
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// NewPlainClient is a client implementation of the PLAIN authentication
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// mechanism, as described in RFC 4616. Unlike smtp.PlainAuth it does not
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// require a TLS connection, which the development server does not offer.
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// Authorization identity may be left blank to indicate that it is the same as
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// the username.
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func NewPlainClient(identity, username, password string) smtp.Auth {
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return &plainClient{identity, username, password}
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}
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const configPath = "config.toml"
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func main() {
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if err := run(); err != nil {
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slog.Error("sendmail failed", slog.String("err", err.Error()))
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os.Exit(1)
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}
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}
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func run() error {
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config, err := smtp2shoutrrr.LoadConfig(configPath)
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if err != nil {
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return fmt.Errorf("loading configuration: %w", err)
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}
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// The development server listens on localhost without TLS.
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hostname := "localhost"
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auth := NewPlainClient("", config.Username, config.Password)
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slog.Info("Using first recipient configuration to send a test email")
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if len(config.Recipients) == 0 {
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return errors.New("no recipients found in configuration")
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}
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if len(config.Recipients[0].Addresses) == 0 {
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return errors.New("no email addresses found in first recipient configuration")
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}
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recipients := []string{config.Recipients[0].Addresses[0]}
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msg := []byte("Subject: Test notification\r\n\r\nThis is a test notification")
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from := "hello@localhost"
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return smtp.SendMail(fmt.Sprintf("%s:%d", hostname, config.Port), auth, from, recipients, msg)
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}
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