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bpo-1104: msilib.SummaryInfo.GetProperty() truncates the string by one character (GH-4517)

Browse source 
Add one char to MsiSummaryInfoGetProperty() output
Based on the patch in bpo-1104 by Anthony Tuininga (atuining) and Mark McMahon (markm).
This commit is contained in:
Tzu-ping Chung 2019-02-03 01:13:23 +08:00 committed by Steve Dower
parent 05e922136a
commit 2de576e16d
3 changed files with 46 additions and 12 deletions
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27
Lib/test/test_msilib.py
View file

@ -1,5 +1,5 @@
""" Test suite for the code in msilib """
import os.path
import os
import unittest
from test.support import TESTFN, import_module, unlink
msilib = import_module('msilib')
@ -42,6 +42,29 @@ def test_view_fetch_returns_none(self):
)
self.addCleanup(unlink, db_path)
def test_summaryinfo_getproperty_issue1104(self):
db, db_path = init_database()
try:
sum_info = db.GetSummaryInformation(99)
title = sum_info.GetProperty(msilib.PID_TITLE)
self.assertEqual(title, b"Installation Database")
sum_info.SetProperty(msilib.PID_TITLE, "a" * 999)
title = sum_info.GetProperty(msilib.PID_TITLE)
self.assertEqual(title, b"a" * 999)
sum_info.SetProperty(msilib.PID_TITLE, "a" * 1000)
title = sum_info.GetProperty(msilib.PID_TITLE)
self.assertEqual(title, b"a" * 1000)
sum_info.SetProperty(msilib.PID_TITLE, "a" * 1001)
title = sum_info.GetProperty(msilib.PID_TITLE)
self.assertEqual(title, b"a" * 1001)
finally:
db = None
sum_info = None
os.unlink(db_path)
def test_database_open_failed(self):
with self.assertRaises(msilib.MSIError) as cm:
msilib.OpenDatabase('non-existent.msi', msilib.MSIDBOPEN_READONLY)
@ -92,7 +115,7 @@ def test_invalid_first_char(self):
def test_invalid_any_char(self):
self.assertEqual(
msilib.make_id(".s\x82ort"), "_.s_ort")
self.assertEqual (
self.assertEqual(
msilib.make_id(".s\x82o?*+rt"), "_.s_o___rt")

2
Misc/NEWS.d/next/Windows/2017-11-24-12-53-54.bpo-1104.1CWSZp.rst Normal file
View file

@ -0,0 +1,2 @@
Correctly handle string length in ``msilib.SummaryInfo.GetProperty()`` to
prevent it from truncating the last character.

29
PC/_msi.c
View file

@ -555,7 +555,7 @@ summary_getproperty(msiobj* si, PyObject *args)
FILETIME fval;
char sbuf[1000];
char *sval = sbuf;
DWORD ssize = sizeof(sval);
DWORD ssize = sizeof(sbuf);
if (!PyArg_ParseTuple(args, "i:GetProperty", &field))
return NULL;
@ -563,6 +563,7 @@ summary_getproperty(msiobj* si, PyObject *args)
status = MsiSummaryInfoGetProperty(si->h, field, &type, &ival,
&fval, sval, &ssize);
if (status == ERROR_MORE_DATA) {
ssize++;
sval = malloc(ssize);
if (sval == NULL) {
return PyErr_NoMemory();
@ -572,21 +573,29 @@ summary_getproperty(msiobj* si, PyObject *args)
}
switch(type) {
case VT_I2: case VT_I4:
return PyLong_FromLong(ival);
case VT_I2:
case VT_I4:
result = PyLong_FromLong(ival);
break;
case VT_FILETIME:
PyErr_SetString(PyExc_NotImplementedError, "FILETIME result");
return NULL;
result = NULL;
break;
case VT_LPSTR:
result = PyBytes_FromStringAndSize(sval, ssize);
if (sval != sbuf)
free(sval);
return result;
break;
case VT_EMPTY:
Py_RETURN_NONE;
Py_INCREF(Py_None);
result = Py_None;
break;
default:
PyErr_Format(PyExc_NotImplementedError, "result of type %d", type);
result = NULL;
break;
}
PyErr_Format(PyExc_NotImplementedError, "result of type %d", type);
return NULL;
if (sval != sbuf)
free(sval);
return result;
}
static PyObject*