# HG changeset patch
# User Zhigang Wang <zhigang.x.wang@oracle.com>
# Date 1292835414 -28800
# Node ID f05250572467b2e56e1de32f692ce29e27f21b07
# Parent  6f011cf52f9a765c1467a9cb3d8e5e854d564498
smtp: fix for server doesn't support starttls extension

Currently we only support enabling TLS by using SMTP STARTTLS extension. But
not all the servers support it.

With this patch, user can choose which way to enable TLS:

* Default:

      tls = none
      port = 25

* To use STARTTLS:

      tls = starttls
      port = 465

* To use SMTP over SSL:

      tls = smtps
      port = 465

To keep backward compatibility, when tls = true, we use STARTTLS to enable TLS.

Signed-off-by: Zhigang Wang <w1z2g3@gmail.com>

diff -r 6f011cf52f9a -r f05250572467 doc/hgrc.5.txt
--- a/doc/hgrc.5.txt	Thu Dec 02 03:43:06 2010 +0100
+++ b/doc/hgrc.5.txt	Mon Dec 20 16:56:54 2010 +0800
@@ -709,8 +709,8 @@
 ``port``
     Optional. Port to connect to on mail server. Default: 25.
 ``tls``
-    Optional. Whether to connect to mail server using TLS. True or
-    False. Default: False.
+    Optional. Method to enable TLS when connecting to mail server: starttls,
+    smtps or none. Default: none.
 ``username``
     Optional. User name for authenticating with the SMTP server.
     Default: none.
diff -r 6f011cf52f9a -r f05250572467 mercurial/mail.py
--- a/mercurial/mail.py	Thu Dec 02 03:43:06 2010 +0100
+++ b/mercurial/mail.py	Mon Dec 20 16:56:54 2010 +0800
@@ -33,7 +33,17 @@
 def _smtp(ui):
     '''build an smtp connection and return a function to send mail'''
     local_hostname = ui.config('smtp', 'local_hostname')
-    s = smtplib.SMTP(local_hostname=local_hostname)
+    tls = ui.config('smtp', 'tls')
+    # backward compatible: when tls = true, we use starttls.
+    starttls = tls == 'starttls' or util.parsebool(tls)
+    smtps = tls == 'smtps'
+    if (starttls or smtps) and not hasattr(socket, 'ssl'):
+        raise util.Abort(_("can't use TLS: Python SSL support not installed"))
+    if smtps:
+        ui.note(_('(using smtps)\n'))
+        s = smtplib.SMTP_SSL(local_hostname=local_hostname)
+    else:
+        s = smtplib.SMTP(local_hostname=local_hostname)
     mailhost = ui.config('smtp', 'host')
     if not mailhost:
         raise util.Abort(_('smtp.host not configured - cannot send mail'))
@@ -41,11 +51,8 @@
     ui.note(_('sending mail: smtp host %s, port %s\n') %
             (mailhost, mailport))
     s.connect(host=mailhost, port=mailport)
-    if ui.configbool('smtp', 'tls'):
-        if not hasattr(socket, 'ssl'):
-            raise util.Abort(_("can't use TLS: Python SSL support "
-                               "not installed"))
-        ui.note(_('(using tls)\n'))
+    if starttls:
+        ui.note(_('(using starttls)\n'))
         s.ehlo()
         s.starttls()
         s.ehlo()