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Code Issues Releases Wiki Activity

Add a ForceTLS flag for SMTP. (#402)

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When this is enabled, the server listens with TLS instead of waiting for
STARTTLS.

Signed-off-by: Benson Margulies <bimargulies@google.com>
This commit is contained in:
Benson Margulies
2023-10-16 14:31:16 -07:00
committed by GitHub
parent 3709aa8b51
commit beb5abc62d
3 changed files with 13 additions and 3 deletions
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9
pkg/server/smtp/handler.go
View File

@@ -119,7 +119,7 @@ func NewSession(server *Server, id int, conn net.Conn, logger zerolog.Logger) *S
reader := bufio.NewReader(conn)
host, _, _ := net.SplitHostPort(conn.RemoteAddr().String())
return &Session{
session := &Session{
Server: server,
id: id,
conn: conn,
@@ -131,6 +131,11 @@ func NewSession(server *Server, id int, conn net.Conn, logger zerolog.Logger) *S
debug: server.config.Debug,
text: textproto.NewConn(conn),
}
if server.config.ForceTLS {
session.tlsState = new(tls.ConnectionState)
*session.tlsState = conn.(*tls.Conn).ConnectionState()
}
return session
}
func (s *Session) String() string {
@@ -289,7 +294,7 @@ func (s *Session) greetHandler(cmd string, arg string) {
s.send("250-" + readyBanner)
s.send("250-8BITMIME")
s.send("250-AUTH PLAIN LOGIN")
if s.Server.config.TLSEnabled && s.Server.tlsConfig != nil && s.tlsState == nil {
if s.Server.config.TLSEnabled && !s.Server.config.ForceTLS && s.Server.tlsConfig != nil && s.tlsState == nil {
s.send("250-STARTTLS")
}
s.send(fmt.Sprintf("250 SIZE %v", s.config.MaxMessageBytes))