[PATCH v2 2/4] atl: Avoid NULL pointer reference in AtlComModuleGetClassObject().
Zhiyi Zhang
wine at gitlab.winehq.org
Wed Jul 6 09:15:07 CDT 2022
From: Zhiyi Zhang <zzhang at codeweavers.com>
Signed-off-by: Zhiyi Zhang <zzhang at codeweavers.com>
---
configure.ac | 1 +
dlls/atl/atl.c | 4 +--
dlls/atl100/tests/atl.c | 27 +++++++++++++++
dlls/atl110/tests/Makefile.in | 6 ++++
dlls/atl110/tests/atl.c | 65 +++++++++++++++++++++++++++++++++++
5 files changed, 101 insertions(+), 2 deletions(-)
create mode 100644 dlls/atl110/tests/Makefile.in
create mode 100644 dlls/atl110/tests/atl.c
diff --git a/configure.ac b/configure.ac
index d5791bab7b1..5ea0d9120f0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2394,6 +2394,7 @@ WINE_CONFIG_MAKEFILE(dlls/atl/tests)
WINE_CONFIG_MAKEFILE(dlls/atl100)
WINE_CONFIG_MAKEFILE(dlls/atl100/tests)
WINE_CONFIG_MAKEFILE(dlls/atl110)
+WINE_CONFIG_MAKEFILE(dlls/atl110/tests)
WINE_CONFIG_MAKEFILE(dlls/atl80)
WINE_CONFIG_MAKEFILE(dlls/atl80/tests)
WINE_CONFIG_MAKEFILE(dlls/atl90)
diff --git a/dlls/atl/atl.c b/dlls/atl/atl.c
index 87a24e33ed7..d501e7a6d76 100644
--- a/dlls/atl/atl.c
+++ b/dlls/atl/atl.c
@@ -482,7 +482,7 @@ HRESULT WINAPI AtlComModuleGetClassObject(_ATL_COM_MODULE *pm, REFCLSID rclsid,
return E_INVALIDARG;
for(iter = pm->m_ppAutoObjMapFirst; iter < pm->m_ppAutoObjMapLast; iter++) {
- if(IsEqualCLSID((*iter)->pclsid, rclsid) && (*iter)->pfnGetClassObject) {
+ if(*iter && IsEqualCLSID((*iter)->pclsid, rclsid) && (*iter)->pfnGetClassObject) {
if(!(*iter)->pCF)
hres = (*iter)->pfnGetClassObject((*iter)->pfnCreateInstance, &IID_IUnknown, (void**)&(*iter)->pCF);
if((*iter)->pCF)
@@ -507,7 +507,7 @@ HRESULT WINAPI AtlComModuleGetClassObject(_ATL_COM_MODULE *pm, REFCLSID rclsid,
return E_INVALIDARG;
for(iter = pm->m_ppAutoObjMapFirst; iter < pm->m_ppAutoObjMapLast; iter++) {
- if(IsEqualCLSID((*iter)->pclsid, rclsid) && (*iter)->pfnGetClassObject) {
+ if(*iter && IsEqualCLSID((*iter)->pclsid, rclsid) && (*iter)->pfnGetClassObject) {
if(!(*iter)->pCache->pCF)
hres = (*iter)->pfnGetClassObject((*iter)->pfnCreateInstance, &IID_IUnknown, (void**)&(*iter)->pCache->pCF);
if((*iter)->pCache->pCF)
diff --git a/dlls/atl100/tests/atl.c b/dlls/atl100/tests/atl.c
index e161878f8ea..e002af0d24c 100644
--- a/dlls/atl100/tests/atl.c
+++ b/dlls/atl100/tests/atl.c
@@ -1062,6 +1062,32 @@ static void test_AtlAxCreateControl(void)
DestroyWindow(hwnd);
}
+static void test_AtlComModuleGetClassObject(void)
+{
+ _ATL_OBJMAP_ENTRY *null_entry = NULL;
+ _ATL_COM_MODULE module;
+ HRESULT hr;
+ void *ret;
+
+ /* Test NULL module */
+ hr = AtlComModuleGetClassObject(NULL, &GUID_NULL, &IID_NULL, &ret);
+ ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+
+ /* Test NULL m_ppAutoObjMapFirst and m_ppAutoObjMapLast */
+ module.cbSize = sizeof(module);
+ module.m_ppAutoObjMapFirst = NULL;
+ module.m_ppAutoObjMapLast = NULL;
+ hr = AtlComModuleGetClassObject(&module, &GUID_NULL, &IID_NULL, &ret);
+ ok(hr == CLASS_E_CLASSNOTAVAILABLE, "Unexpected hr %#lx.\n", hr);
+
+ /* Test m_ppAutoObjMapFirst and m_ppAutoObjMapLast both pointing to a NULL entry */
+ module.cbSize = sizeof(module);
+ module.m_ppAutoObjMapFirst = &null_entry;
+ module.m_ppAutoObjMapLast = &null_entry;
+ hr = AtlComModuleGetClassObject(&module, &GUID_NULL, &IID_NULL, &ret);
+ ok(hr == CLASS_E_CLASSNOTAVAILABLE, "Unexpected hr %#lx.\n", hr);
+}
+
START_TEST(atl)
{
if (!register_class())
@@ -1077,6 +1103,7 @@ START_TEST(atl)
test_ax_win();
test_AtlAxAttachControl();
test_AtlAxCreateControl();
+ test_AtlComModuleGetClassObject();
CoUninitialize();
}
diff --git a/dlls/atl110/tests/Makefile.in b/dlls/atl110/tests/Makefile.in
new file mode 100644
index 00000000000..6374117e1be
--- /dev/null
+++ b/dlls/atl110/tests/Makefile.in
@@ -0,0 +1,6 @@
+TESTDLL = atl110.dll
+IMPORTS = uuid ole32 atl110
+EXTRADEFS = -D_ATL_VER=_ATL_VER_110
+
+C_SRCS = \
+ atl.c
diff --git a/dlls/atl110/tests/atl.c b/dlls/atl110/tests/atl.c
new file mode 100644
index 00000000000..cb8f667596b
--- /dev/null
+++ b/dlls/atl110/tests/atl.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2022 Zhiyi Zhang for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#define COBJMACROS
+#define CONST_VTABLE
+
+#include <windef.h>
+#include <winbase.h>
+#include <winuser.h>
+#include <atlbase.h>
+
+#include <wine/test.h>
+
+static void test_AtlComModuleGetClassObject(void)
+{
+ _ATL_OBJMAP_ENTRY_EX *null_entry = NULL;
+ _ATL_COM_MODULE module;
+ HRESULT hr;
+ void *ret;
+
+ /* Test NULL module */
+ hr = AtlComModuleGetClassObject(NULL, &GUID_NULL, &IID_NULL, &ret);
+ ok(hr == E_INVALIDARG, "Unexpected hr %#lx.\n", hr);
+
+ /* Test NULL m_ppAutoObjMapFirst and m_ppAutoObjMapLast */
+ module.cbSize = sizeof(module);
+ module.m_ppAutoObjMapFirst = NULL;
+ module.m_ppAutoObjMapLast = NULL;
+ hr = AtlComModuleGetClassObject(&module, &GUID_NULL, &IID_NULL, &ret);
+ ok(hr == CLASS_E_CLASSNOTAVAILABLE, "Unexpected hr %#lx.\n", hr);
+
+ /* Test m_ppAutoObjMapFirst and m_ppAutoObjMapLast both pointing to a NULL entry */
+ module.cbSize = sizeof(module);
+ module.m_ppAutoObjMapFirst = &null_entry;
+ module.m_ppAutoObjMapLast = &null_entry;
+ hr = AtlComModuleGetClassObject(&module, &GUID_NULL, &IID_NULL, &ret);
+ ok(hr == CLASS_E_CLASSNOTAVAILABLE, "Unexpected hr %#lx.\n", hr);
+}
+
+START_TEST(atl)
+{
+ CoInitialize(NULL);
+
+ test_AtlComModuleGetClassObject();
+
+ CoUninitialize();
+}
--
GitLab
https://gitlab.winehq.org/wine/wine/-/merge_requests/358
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