Merge with 3.5

Lib/email/contentmanager.py

@@ -126,12 +126,13 @@ def _finalize_set(msg, disposition, filename, cid, params):
             msg.set_param(key, value)
 
 
-# XXX: This is a cleaned-up version of base64mime.body_encode.  It would
-# be nice to drop both this and quoprimime.body_encode in favor of
-# enhanced binascii routines that accepted a max_line_length parameter.
+# XXX: This is a cleaned-up version of base64mime.body_encode (including a bug
+# fix in the calculation of unencoded_bytes_per_line).  It would be nice to
+# drop both this and quoprimime.body_encode in favor of enhanced binascii
+# routines that accepted a max_line_length parameter.
 def _encode_base64(data, max_line_length):
     encoded_lines = []
-    unencoded_bytes_per_line = max_line_length * 3 // 4
+    unencoded_bytes_per_line = max_line_length // 4 * 3
     for i in range(0, len(data), unencoded_bytes_per_line):
         thisline = data[i:i+unencoded_bytes_per_line]
         encoded_lines.append(binascii.b2a_base64(thisline).decode('ascii'))

Lib/test/test_email/__init__.py

@@ -120,6 +120,10 @@ def parameterize(cls):
     Note: if and only if the generated test name is a valid identifier can it
     be used to select the test individually from the unittest command line.
 
+    The values in the params dict can be a single value, a tuple, or a
+    dict.  If a single value of a tuple, it is passed to the test function
+    as positional arguments.  If a dict, it is a passed via **kw.
+
     """
     paramdicts = {}
     testers = collections.defaultdict(list)
@@ -148,6 +152,10 @@ def parameterize(cls):
             if name.startswith(paramsname):
                 testnameroot = 'test_' + name[len(paramsname):]
                 for paramname, params in paramsdict.items():
+                    if hasattr(params, 'keys'):
+                        test = (lambda self, name=name, params=params:
+                                    getattr(self, name)(**params))
+                    else:
                         test = (lambda self, name=name, params=params:
                                         getattr(self, name)(*params))
                     testname = testnameroot + '_' + paramname

Lib/test/test_email/test_inversion.py

@@ -7,6 +7,7 @@ producing RFC valid messages.
 import io
 import unittest
 from email import policy, message_from_bytes
+from email.message import EmailMessage
 from email.generator import BytesGenerator
 from test.test_email import TestEmailBase, parameterize
 
@@ -23,7 +24,10 @@ def dedent(bstr):
 
 
 @parameterize
-class TestInversion(TestEmailBase, unittest.TestCase):
+class TestInversion(TestEmailBase):
+
+    policy = policy.default
+    message = EmailMessage
 
     def msg_as_input(self, msg):
         m = message_from_bytes(msg, policy=policy.SMTP)
@@ -44,6 +48,23 @@ class TestInversion(TestEmailBase, unittest.TestCase):
 
             }
 
+    payload_params = {
+        'plain_text': dict(payload='This is a test\n'*20),
+        'base64_text': dict(payload=(('xy a'*40+'\n')*5), cte='base64'),
+        'qp_text': dict(payload=(('xy a'*40+'\n')*5), cte='quoted-printable'),
+        }
+
+    def payload_as_body(self, payload, **kw):
+        msg = self._make_message()
+        msg['From'] = 'foo'
+        msg['To'] = 'bar'
+        msg['Subject'] = 'payload round trip test'
+        msg.set_content(payload, **kw)
+        b = bytes(msg)
+        msg2 = message_from_bytes(b, policy=self.policy)
+        self.assertEqual(bytes(msg2), b)
+        self.assertEqual(msg2.get_content(), payload)
+
 
 if __name__ == '__main__':
     unittest.main()

Misc/NEWS

@@ -113,6 +113,11 @@ Core and Builtins
 Library
 -------
 
+- Issue #24594: Validates persist parameter when opening MSI database
+
+- Issue #28047: Fixed calculation of line length used for the base64 CTE
+  in the new email policies.
+
 - Issue #27576: Fix call order in OrderedDict.__init__().
 
 - email.generator.DecodedGenerator now supports the policy keyword.

PC/_msi.c

@@ -955,6 +955,17 @@ static PyTypeObject msidb_Type = {
         0,                      /*tp_is_gc*/
 };
 
+#define Py_NOT_PERSIST(x, flag)                        \
+    (x != (int)(flag) &&                      \
+    x != ((int)(flag) | MSIDBOPEN_PATCHFILE))
+
+#define Py_INVALID_PERSIST(x)                \
+    (Py_NOT_PERSIST(x, MSIDBOPEN_READONLY) &&  \
+    Py_NOT_PERSIST(x, MSIDBOPEN_TRANSACT) &&   \
+    Py_NOT_PERSIST(x, MSIDBOPEN_DIRECT) &&     \
+    Py_NOT_PERSIST(x, MSIDBOPEN_CREATE) &&     \
+    Py_NOT_PERSIST(x, MSIDBOPEN_CREATEDIRECT))
+
 static PyObject* msiopendb(PyObject *obj, PyObject *args)
 {
     int status;
@@ -962,10 +973,13 @@ static PyObject* msiopendb(PyObject *obj, PyObject *args)
     int persist;
     MSIHANDLE h;
     msiobj *result;
-
     if (!PyArg_ParseTuple(args, "si:MSIOpenDatabase", &path, &persist))
         return NULL;
-
+    /* We need to validate that persist is a valid MSIDBOPEN_* value. Otherwise,
+       MsiOpenDatabase may treat the value as a pointer, leading to unexpected
+       behavior. */
+    if (Py_INVALID_PERSIST(persist))
+        return msierror(ERROR_INVALID_PARAMETER);
     status = MsiOpenDatabase(path, (LPCSTR)persist, &h);
     if (status != ERROR_SUCCESS)
         return msierror(status);