bpo-41074: Fix support of non-ASCII names and SQL in msilib. (GH-21126)

* Fix support of non-ASCII names in functions OpenDatabase()
  and init_database().
* Fix support of non-ASCII SQL in method Database.OpenView().
(cherry picked from commit 55939b1708)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

Lib/test/test_msilib.py

@@ -1,13 +1,13 @@
 """ Test suite for the code in msilib """
 import os
 import unittest
-from test.support import TESTFN, import_module, unlink
+from test.support import TESTFN, FS_NONASCII, import_module, unlink
 msilib = import_module('msilib')
 import msilib.schema
 
 
 def init_database():
-    path = TESTFN + '.msi'
+    path = TESTFN + (FS_NONASCII or '') + '.msi'
     db = msilib.init_database(
         path,
         msilib.schema,
@@ -42,6 +42,16 @@ def test_view_fetch_returns_none(self):
         )
         self.addCleanup(unlink, db_path)
 
+    def test_view_non_ascii(self):
+        db, db_path = init_database()
+        view = db.OpenView("SELECT 'ß-розпад' FROM Property")
+        view.Execute(None)
+        record = view.Fetch()
+        self.assertEqual(record.GetString(1), 'ß-розпад')
+        view.Close()
+        db.Close()
+        self.addCleanup(unlink, db_path)
+
     def test_summaryinfo_getproperty_issue1104(self):
         db, db_path = init_database()
         try:

Misc/NEWS.d/next/Windows/2020-06-24-21-30-42.bpo-41074.gaQc3C.rst

@@ -0,0 +1,3 @@
+Fixed support of non-ASCII names in functions :func:`msilib.OpenDatabase`
+and :func:`msilib.init_database` and non-ASCII SQL in method
+:meth:`msilib.Database.OpenView`.

PC/_msi.c

@@ -872,14 +872,14 @@ static PyObject*
 msidb_openview(msiobj *msidb, PyObject *args)
 {
     int status;
-    char *sql;
+    const wchar_t *sql;
     MSIHANDLE hView;
     msiobj *result;
 
-    if (!PyArg_ParseTuple(args, "s:OpenView", &sql))
+    if (!PyArg_ParseTuple(args, "u:OpenView", &sql))
         return NULL;
 
-    if ((status = MsiDatabaseOpenView(msidb->h, sql, &hView)) != ERROR_SUCCESS)
+    if ((status = MsiDatabaseOpenViewW(msidb->h, sql, &hView)) != ERROR_SUCCESS)
         return msierror(status);
 
     result = PyObject_New(struct msiobj, &msiview_Type);
@@ -998,18 +998,18 @@ static PyTypeObject msidb_Type = {
 static PyObject* msiopendb(PyObject *obj, PyObject *args)
 {
     int status;
-    char *path;
+    const wchar_t *path;
     int persist;
     MSIHANDLE h;
     msiobj *result;
-    if (!PyArg_ParseTuple(args, "si:MSIOpenDatabase", &path, &persist))
+    if (!PyArg_ParseTuple(args, "ui: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)(SIZE_T)persist, &h);
+    status = MsiOpenDatabaseW(path, (LPCWSTR)(SIZE_T)persist, &h);
     if (status != ERROR_SUCCESS)
         return msierror(status);