Implement submission to smtps service.

* examples/mail-file.c: allow testing submission to smtps service.
* libesmtp-private.h: add negotiate_ssl() prototype.
* libesmtp.h: add  Starttls_OVER_SSL to starttls_option enum.
* protocol.h: enable SSL on connection whenever selected.
* smtp-tls.c: share negotiate_ssl().

1 files changed, 12 insertions, 0 deletions

diff --git a/protocol.c b/protocol.c
index 0b44df8..70b80a4 100644
--- a/protocol.c
+++ b/protocol.c
@@ -303,6 +303,18 @@ do_session (smtp_session_t session)
 #ifdef USE_TLS
       session->using_tls = 0;
 #endif
+#if 1
+      if (session->starttls_enabled == Starttls_OVER_SSL)
+        {
+          if ( !(select_starttls (session) && 
+                 negotiate_ssl (conn, session) == 0) )
+            continue;
+          /* Do we handle here negotiate_ssl returning -1? We might
+             leave a dangling open socket here. */
+        }
+#endif
+      printf("%s A %d\n", __func__, session->using_tls);
+
 
       nresp = 0;
       session->cmd_state = session->rsp_state = 0;