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https://github.com/ergochat/ergo.git
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ca03a42dff
commit
71871ca1ef
@ -414,6 +414,7 @@ accounts:
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# port: 25
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# username: "admin"
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# password: "hunter2"
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# implicit-tls: false # TLS from the first byte, typically on port 465
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blacklist-regexes:
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# - ".*@mailinator.com"
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timeout: 60s
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@ -24,10 +24,11 @@ var (
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)
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type MTAConfig struct {
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Server string
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Port int
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Username string
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Password string
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Server string
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Port int
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Username string
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Password string
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ImplicitTLS bool `yaml:"implicit-tls"`
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}
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type MailtoConfig struct {
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@ -132,11 +133,13 @@ func SendMail(config MailtoConfig, recipient string, msg []byte) (err error) {
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var addr string
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var auth smtp.Auth
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var implicitTLS bool
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if !config.DirectSendingEnabled() {
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addr = fmt.Sprintf("%s:%d", config.MTAReal.Server, config.MTAReal.Port)
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if config.MTAReal.Username != "" && config.MTAReal.Password != "" {
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auth = smtp.PlainAuth("", config.MTAReal.Username, config.MTAReal.Password, config.MTAReal.Server)
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}
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implicitTLS = config.MTAReal.ImplicitTLS
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} else {
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idx := strings.IndexByte(recipient, '@')
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if idx == -1 {
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@ -149,5 +152,8 @@ func SendMail(config MailtoConfig, recipient string, msg []byte) (err error) {
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addr = fmt.Sprintf("%s:smtp", mx)
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}
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return smtp.SendMail(addr, auth, config.HeloDomain, config.Sender, []string{recipient}, msg, config.RequireTLS, config.Timeout)
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return smtp.SendMail(
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addr, auth, config.HeloDomain, config.Sender, []string{recipient}, msg,
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config.RequireTLS, implicitTLS, config.Timeout,
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)
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}
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@ -55,14 +55,17 @@ type Client struct {
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// Dial returns a new Client connected to an SMTP server at addr.
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// The addr must include a port, as in "mail.example.com:smtp".
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func Dial(addr string, timeout time.Duration) (*Client, error) {
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func Dial(addr string, timeout time.Duration, implicitTLS bool) (*Client, error) {
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var conn net.Conn
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var err error
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dialer := net.Dialer{
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Timeout: timeout,
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}
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start := time.Now()
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if timeout == 0 {
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conn, err = net.Dial("tcp", addr)
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if !implicitTLS {
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conn, err = dialer.Dial("tcp", addr)
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} else {
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conn, err = net.DialTimeout("tcp", addr, timeout)
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conn, err = tls.DialWithDialer(&dialer, "tcp", addr, nil)
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}
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if err != nil {
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return nil, err
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@ -338,7 +341,7 @@ var testHookStartTLS func(*tls.Config) // nil, except for tests
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// functionality. Higher-level packages exist outside of the standard
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// library.
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// XXX: modified in Ergo to add `requireTLS`, `heloDomain`, and `timeout` arguments
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func SendMail(addr string, a Auth, heloDomain string, from string, to []string, msg []byte, requireTLS bool, timeout time.Duration) error {
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func SendMail(addr string, a Auth, heloDomain string, from string, to []string, msg []byte, requireTLS, implicitTLS bool, timeout time.Duration) error {
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if err := validateLine(from); err != nil {
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return err
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}
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@ -347,7 +350,7 @@ func SendMail(addr string, a Auth, heloDomain string, from string, to []string,
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return err
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}
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}
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c, err := Dial(addr, timeout)
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c, err := Dial(addr, timeout, implicitTLS)
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if err != nil {
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return err
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}
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@ -355,23 +358,25 @@ func SendMail(addr string, a Auth, heloDomain string, from string, to []string,
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if err = c.Hello(heloDomain); err != nil {
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return err
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}
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if ok, _ := c.Extension("STARTTLS"); ok {
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var config *tls.Config
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if requireTLS {
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config = &tls.Config{ServerName: c.serverName}
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} else {
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// if TLS isn't a hard requirement, don't verify the certificate either,
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// since a MITM attacker could just remove the STARTTLS advertisement
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config = &tls.Config{InsecureSkipVerify: true}
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if !implicitTLS {
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if ok, _ := c.Extension("STARTTLS"); ok {
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var config *tls.Config
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if requireTLS {
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config = &tls.Config{ServerName: c.serverName}
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} else {
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// if TLS isn't a hard requirement, don't verify the certificate either,
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// since a MITM attacker could just remove the STARTTLS advertisement
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config = &tls.Config{InsecureSkipVerify: true}
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}
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if testHookStartTLS != nil {
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testHookStartTLS(config)
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}
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if err = c.StartTLS(config); err != nil {
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return err
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}
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} else if requireTLS {
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return errors.New("TLS required, but not negotiated")
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}
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if testHookStartTLS != nil {
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testHookStartTLS(config)
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}
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if err = c.StartTLS(config); err != nil {
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return err
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}
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} else if requireTLS {
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return errors.New("TLS required, but not negotiated")
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}
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if a != nil && c.ext != nil {
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if _, ok := c.ext["AUTH"]; !ok {
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@ -387,6 +387,7 @@ accounts:
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# port: 25
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# username: "admin"
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# password: "hunter2"
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# implicit-tls: false # TLS from the first byte, typically on port 465
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blacklist-regexes:
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# - ".*@mailinator.com"
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timeout: 60s
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