Support mailto://localhost (default user is root) (#1360)

apprise/plugins/email/base.py

@@ -393,7 +393,7 @@ class NotifyEmail(NotifyBase):
         it was provided.
         """
 
-        if self.smtp_host or not self.user:
+        if self.smtp_host:
             # SMTP Server was explicitly specified, therefore it is assumed
             # the caller knows what he's doing and is intentionally
             # over-riding any smarts to be applied. We also can not apply
@@ -404,7 +404,7 @@ class NotifyEmail(NotifyBase):
         from_addr = '{}@{}'.format(
             re.split(r'[\s@]+', self.user)[0],
             self.host,
-        )
+        ) if self.user else self.host
 
         for i in range(len(templates.EMAIL_TEMPLATES)):  # pragma: no branch
             self.logger.trace('Scanning %s against %s' % (
@@ -458,6 +458,14 @@ class NotifyEmail(NotifyBase):
                         # not supported; switch it to email
                         self.user = '{}@{}'.format(self.user, self.host)
 
+                if 'from_user' in templates.EMAIL_TEMPLATES[i][2] \
+                        and not self.from_addr[1]:
+
+                    # Update our from address if defined
+                    self.from_addr[1] = '{}@{}'.format(
+                        templates.EMAIL_TEMPLATES[i][2]['from_user'],
+                        self.host)
+
                 break
 
     def send(self, body, title='', notify_type=NotifyType.INFO, attach=None,

apprise/plugins/email/templates.py

@@ -255,6 +255,19 @@ EMAIL_TEMPLATES = (
         },
     ),
 
+    # Localhost handling
+    (
+        'Local Mail Server',
+        re.compile(
+            r'^(((?P<label>[^+]+)\+)?(?P<id>[^@]+)@)?'
+            r'(?P<domain>localhost(\.localdomain)?)$', re.I),
+        {
+            # Provide a default user if one isn't provided
+            'from_user': 'root',
+            'smtp_host': None,
+        },
+    ),
+
     # Catch All
     (
         'Custom',

test/test_plugin_email.py

@@ -1798,12 +1798,12 @@ def test_plugin_email_variables_1087():
     assert isinstance(result, list)
     assert len(result) == 1
 
-    email = result[0]
-    assert email.from_addr == ['Apprise', 'testuser@alt.lan']
-    assert email.user == 'testuser@alt.lan'
-    assert email.smtp_host == 'smtp.alt.lan'
-    assert email.targets == [(False, 'alteriks@alt.lan')]
-    assert email.password == 'xxxxXXXxxx'
+    _email = result[0]
+    assert _email.from_addr == ['Apprise', 'testuser@alt.lan']
+    assert _email.user == 'testuser@alt.lan'
+    assert _email.smtp_host == 'smtp.alt.lan'
+    assert _email.targets == [(False, 'alteriks@alt.lan')]
+    assert _email.password == 'xxxxXXXxxx'
 
     # Valid Configuration
     result, _ = ConfigBase.config_parse(cleandoc("""
@@ -1821,12 +1821,12 @@ def test_plugin_email_variables_1087():
     assert isinstance(result, list)
     assert len(result) == 1
 
-    email = result[0]
-    assert email.from_addr == ['Apprise', 'joe@alt.lan']
-    assert email.user == 'joe@alt.lan'
-    assert email.smtp_host == 'smtp.alt.lan'
-    assert email.targets == [(False, 'alteriks@alt.lan')]
-    assert email.password == 'abcd'
+    _email = result[0]
+    assert _email.from_addr == ['Apprise', 'joe@alt.lan']
+    assert _email.user == 'joe@alt.lan'
+    assert _email.smtp_host == 'smtp.alt.lan'
+    assert _email.targets == [(False, 'alteriks@alt.lan')]
+    assert _email.password == 'abcd'
 
 
 @mock.patch('smtplib.SMTP_SSL')
@@ -1890,6 +1890,93 @@ def test_plugin_email_to_handling_1356(mock_smtp, mock_smtp_ssl):
     assert _msg.split('\n')[-3] == 'body'
 
 
+@mock.patch('smtplib.SMTP_SSL')
+@mock.patch('smtplib.SMTP')
+def test_plugin_email_variables_1334(mock_smtp, mock_smtp_ssl):
+    """
+    NotifyEmail() GitHub Issue 1334
+    https://github.com/caronc/apprise/issues/1334
+    Localhost & Local Domain default user
+
+    """
+
+    response = mock.Mock()
+    mock_smtp_ssl.return_value = response
+    mock_smtp.return_value = response
+
+    results = email.NotifyEmail.parse_url('mailto://localhost')
+
+    assert isinstance(results, dict)
+    assert results['user'] is None
+    assert results['password'] is None
+    assert results['host'] == 'localhost'
+    assert results['port'] is None
+    assert results['from_addr'] == ''
+    assert results['smtp_host'] == ''
+    assert results['targets'] == []
+
+    obj = Apprise.instantiate(results, suppress_exceptions=False)
+    assert isinstance(obj, email.NotifyEmail)
+
+    assert len(obj.targets) == 1
+    assert (False, 'root@localhost') in obj.targets
+
+    assert obj.smtp_host == 'localhost'
+    assert obj.secure is False
+    assert obj.from_addr == [False, 'root@localhost']
+
+    assert mock_smtp.call_count == 0
+    assert mock_smtp_ssl.call_count == 0
+    assert obj.notify('body', 'title') is True
+
+    assert mock_smtp.call_count == 1
+    assert mock_smtp_ssl.call_count == 0
+    assert response.starttls.call_count == 0
+    # No login occurs as no user/pass was provided
+    assert response.login.call_count == 0
+    assert response.sendmail.call_count == 1
+
+    #
+    # Again, but a different variation of the localhost domain
+    #
+    mock_smtp.reset_mock()
+    mock_smtp_ssl.reset_mock()
+    response.reset_mock()
+
+    results = email.NotifyEmail.parse_url(
+        'mailtos://user@localhost.localdomain')
+
+    assert isinstance(results, dict)
+    assert results['user'] == 'user'
+    assert results['password'] is None
+    assert results['host'] == 'localhost.localdomain'
+    assert results['port'] is None
+    assert results['from_addr'] == ''
+    assert results['smtp_host'] == ''
+    assert results['targets'] == []
+
+    obj = Apprise.instantiate(results, suppress_exceptions=False)
+    assert isinstance(obj, email.NotifyEmail)
+
+    assert len(obj.targets) == 1
+    assert (False, 'user@localhost.localdomain') in obj.targets
+
+    assert obj.smtp_host == 'localhost.localdomain'
+    assert obj.secure is True
+    assert obj.from_addr == ["Apprise", 'user@localhost.localdomain']
+
+    assert mock_smtp.call_count == 0
+    assert mock_smtp_ssl.call_count == 0
+    assert obj.notify('body', 'title') is True
+
+    assert mock_smtp.call_count == 1
+    assert mock_smtp_ssl.call_count == 0
+    assert response.starttls.call_count == 1
+    # No login occurs as no user/pass was provided
+    assert response.login.call_count == 0
+    assert response.sendmail.call_count == 1
+
+
 @mock.patch('smtplib.SMTP_SSL')
 @mock.patch('smtplib.SMTP')
 def test_plugin_host_detection_from_source_email(mock_smtp, mock_smtp_ssl):