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Fix SMTP AUTH LOGIN method for servers with uncommon success messages
This fixes #94 and basically reverts d0f0435
. As James points out correctly in #94, we should not assume specific responses from the server. As long as the spec is followed and the server returns the correct SMTP code, we should not do our own magic.
I've also extended the `getTestConnection` method in client_test.go, so that we can specify more test environment options like `TEST_PORT` and `TEST_TLS_SKIP_VERIFY`. This was needed for testing with the ProtonMail Bridge which listens on a different port and has non-trusted certificates.
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parent
3b3c1e6e8d
commit
862749f863
2 changed files with 17 additions and 10 deletions
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@ -9,7 +9,6 @@ import (
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"errors"
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"errors"
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"fmt"
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"fmt"
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"net/smtp"
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"net/smtp"
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"strings"
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)
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)
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type loginAuth struct {
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type loginAuth struct {
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@ -23,10 +22,6 @@ const (
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// ServerRespPassword represents the "Password:" response by the SMTP server
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// ServerRespPassword represents the "Password:" response by the SMTP server
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ServerRespPassword = "Password:"
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ServerRespPassword = "Password:"
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// ServerRespAuthSuccess represents the "Authentication successful:" response that is
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// by sent by some SMTP servers
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ServerRespAuthSuccess = "Authentication successful"
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)
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)
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// LoginAuth returns an Auth that implements the LOGIN authentication
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// LoginAuth returns an Auth that implements the LOGIN authentication
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@ -70,10 +65,9 @@ func (a *loginAuth) Next(fromServer []byte, more bool) ([]byte, error) {
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return []byte(a.username), nil
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return []byte(a.username), nil
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case ServerRespPassword:
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case ServerRespPassword:
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return []byte(a.password), nil
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return []byte(a.password), nil
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}
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default:
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}
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if strings.HasSuffix(string(fromServer), ServerRespAuthSuccess) {
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return nil, nil
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}
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return nil, fmt.Errorf("unexpected server response: %s", string(fromServer))
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return nil, fmt.Errorf("unexpected server response: %s", string(fromServer))
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}
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}
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}
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return nil, nil
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}
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@ -11,6 +11,7 @@ import (
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"fmt"
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"fmt"
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"net/smtp"
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"net/smtp"
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"os"
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"os"
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"strconv"
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"strings"
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"strings"
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"testing"
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"testing"
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"time"
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"time"
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@ -1087,10 +1088,22 @@ func getTestConnection(auth bool) (*Client, error) {
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if th == "" {
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if th == "" {
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return nil, fmt.Errorf("no TEST_HOST set")
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return nil, fmt.Errorf("no TEST_HOST set")
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}
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}
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c, err := NewClient(th)
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tp := 25
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if tps := os.Getenv("TEST_PORT"); tps != "" {
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tpi, err := strconv.Atoi(tps)
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if err == nil {
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tp = tpi
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}
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}
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sv := false
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if sve := os.Getenv("TEST_TLS_SKIP_VERIFY"); sve != "" {
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sv = true
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}
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c, err := NewClient(th, WithPort(tp))
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if err != nil {
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if err != nil {
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return c, err
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return c, err
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}
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}
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c.tlsconfig.InsecureSkipVerify = sv
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if auth {
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if auth {
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st := os.Getenv("TEST_SMTPAUTH_TYPE")
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st := os.Getenv("TEST_SMTPAUTH_TYPE")
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if st != "" {
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if st != "" {
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