mail: modernize check for Python-with-TLS
We used to be going indirectly through the socket module, but now we
just check for the ssl module.
Differential Revision: https://phab.mercurial-scm.org/D3955
--- a/mercurial/mail.py Mon Jul 16 17:49:17 2018 -0400
+++ b/mercurial/mail.py Mon Jul 16 18:16:26 2018 -0400
@@ -82,6 +82,15 @@
self.file = smtplib.SSLFakeFile(new_socket)
return new_socket
+def _pyhastls():
+ """Returns true iff Python has TLS support, false otherwise."""
+ try:
+ import ssl
+ getattr(ssl, 'HAS_TLS', False)
+ return True
+ except ImportError:
+ return False
+
def _smtp(ui):
'''build an smtp connection and return a function to send mail'''
local_hostname = ui.config('smtp', 'local_hostname')
@@ -89,7 +98,7 @@
# backward compatible: when tls = true, we use starttls.
starttls = tls == 'starttls' or stringutil.parsebool(tls)
smtps = tls == 'smtps'
- if (starttls or smtps) and not util.safehasattr(socket, 'ssl'):
+ if (starttls or smtps) and not _pyhastls():
raise error.Abort(_("can't use TLS: Python SSL support not installed"))
mailhost = ui.config('smtp', 'host')
if not mailhost: