[PATCH 1/2] mxsml3/tests: Add tests for put_text.

[Daniel Lehman]

From: Daniel Lehman <[e-mail]>

calling IXMLDOMNode_put_text on a text node leads to xmlTextSetContent in libxml2
which duplicates the text (xmlStr[n]dup) and frees the old content before setting the new

calling IXMLDOMElement_put_text on an element node leads to xmlNodeParseContent in libxml2
which sets the text on the xmlNode's child and calls xmlFreeNodeList to free the old content

an IXMLDOMNode reference to that internal text node holds a pointer to that freed content
and crashes on IXMLDOMNode_Release

<open>      <-- IXMLDOMElement_put_text -> xmlNodeParseContent frees old 'content' held by IXMLDOMNode below
    sesame  <-- IXMLDOMNode_Release on this node double-frees 'content' freed above
</open>
---
 dlls/msxml3/tests/domdoc.c | 170 +++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)

diff --git a/dlls/msxml3/tests/domdoc.c b/dlls/msxml3/tests/domdoc.c
index 9c16436bc1c..913571ad263 100644
--- a/dlls/msxml3/tests/domdoc.c
+++ b/dlls/msxml3/tests/domdoc.c
@@ -14438,6 +14438,175 @@ static void test_validate_on_parse_values(void)
     }
 }
 
+static void test_put_text(void)
+{
+    IXMLDOMElement *element;
+    IXMLDOMNamedNodeMap *map;
+    IXMLDOMDocument2 *doc;
+    IXMLDOMNode *node, *node2;
+    VARIANT_BOOL b;
+    BSTR str;
+    const WCHAR *expected;
+    HRESULT hr;
+
+    doc = create_document(&IID_IXMLDOMDocument2);
+
+    b = VARIANT_FALSE;
+    str = SysAllocString(L"<?xml version='1.0' encoding='UTF-16'?>\n<open what=\"door\">sesame</open>\n");
+    hr = IXMLDOMDocument2_loadXML(doc, str, &b);
+    ok(hr == S_OK, "Unable to create instance hr %#lx.\n", hr);
+    SysFreeString(str);
+
+    element = NULL;
+    hr = IXMLDOMDocument2_get_documentElement(doc, &element);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    node = NULL;
+    hr = IXMLDOMElement_get_firstChild(element, &node);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    /* put_text on text node */
+    hr = IXMLDOMNode_put_text(node, _bstr_("SESAME"));
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    str = NULL;
+    hr = IXMLDOMElement_get_xml(element, &str);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    expected = L"<open what=\"door\">SESAME</open>";
+    ok(!lstrcmpW(str, expected), "Incorrect element string, got '%s'\n", wine_dbgstr_w(str));
+    SysFreeString(str);
+
+    /* put_text on attribute node */
+    map = NULL;
+    hr = IXMLDOMElement_get_attributes(element, &map);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    node2 = NULL;
+    hr = IXMLDOMNamedNodeMap_get_item(map, 0, &node2);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    hr = IXMLDOMNode_put_text(node2, _bstr_("window"));
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    /* put_text on element parent */
+    hr = IXMLDOMElement_put_text(element, _bstr_("sesame"));
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    str = NULL;
+    hr = IXMLDOMElement_get_xml(element, &str);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    expected = L"<open what=\"window\">sesame</open>";
+    ok(!lstrcmpW(str, expected), "Incorrect element string, got '%s'\n", wine_dbgstr_w(str));
+    SysFreeString(str);
+
+    /* calling put_text on text node again doesn't affect element */
+    hr = IXMLDOMNode_put_text(node, _bstr_("SeSaMe"));
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    str = NULL;
+    hr = IXMLDOMNode_get_text(node, &str);
+    expected = L"SeSaMe";
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(!lstrcmpW(str, expected), "Incorrect node string, got '%s'\n", wine_dbgstr_w(str));
+    SysFreeString(str);
+
+    str = NULL;
+    hr = IXMLDOMElement_get_xml(element, &str);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    expected = L"<open what=\"window\">sesame</open>";
+    todo_wine
+    ok(!lstrcmpW(str, expected), "Incorrect element string, got '%s'\n", wine_dbgstr_w(str));
+    SysFreeString(str);
+
+    IXMLDOMNode_Release(node2);
+    IXMLDOMNamedNodeMap_Release(map);
+    if (0) /* crashes on wine with IXMLDOMElement_put_text */
+    IXMLDOMNode_Release(node);
+    IXMLDOMElement_Release(element);
+    IXMLDOMDocument2_Release(doc);
+
+    /* put_text on element when children is not a text node */
+    doc = create_document(&IID_IXMLDOMDocument2);
+
+    b = VARIANT_FALSE;
+    str = SysAllocString(L"<?xml version='1.0' encoding='UTF-16'?>\n"
+                          "<open>\r\n"
+                            "\t<inside>sesame</inside>\r\n"
+                          "</open>\n");
+    hr = IXMLDOMDocument2_loadXML(doc, str, &b);
+    ok(hr == S_OK, "Unable to create instance hr %#lx.\n", hr);
+    SysFreeString(str);
+
+    element = NULL;
+    hr = IXMLDOMDocument2_get_documentElement(doc, &element);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    str = NULL;
+    hr = IXMLDOMElement_get_xml(element, &str);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    node = NULL;
+    hr = IXMLDOMElement_get_firstChild(element, &node);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    expected = L"<open>\r\n"
+                    "\t<inside>sesame</inside>\r\n"
+                "</open>";
+    ok(!lstrcmpW(str, expected), "Incorrect element string, got '%s'\n", wine_dbgstr_w(str));
+    SysFreeString(str);
+
+    hr = IXMLDOMElement_put_text(element, _bstr_("sesame"));
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    str = NULL;
+    hr = IXMLDOMElement_get_xml(element, &str);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    expected = L"<open>sesame</open>";
+    ok(!lstrcmpW(str, expected), "Incorrect element string, got '%s'\n", wine_dbgstr_w(str));
+    SysFreeString(str);
+
+    IXMLDOMNode_Release(node);
+    IXMLDOMElement_Release(element);
+    IXMLDOMDocument2_Release(doc);
+
+    /* put_text on element with no children */
+    doc = create_document(&IID_IXMLDOMDocument2);
+
+    b = VARIANT_FALSE;
+    str = SysAllocString(L"<?xml version='1.0' encoding='UTF-16'?>\n"
+                          "<open></open>\n");
+    hr = IXMLDOMDocument2_loadXML(doc, str, &b);
+    ok(hr == S_OK, "Unable to create instance hr %#lx.\n", hr);
+    SysFreeString(str);
+
+    element = NULL;
+    hr = IXMLDOMDocument2_get_documentElement(doc, &element);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    node = NULL;
+    hr = IXMLDOMElement_get_firstChild(element, &node);
+    ok(hr == S_FALSE, "Unexpected hr %#lx.\n", hr);
+
+    hr = IXMLDOMElement_put_text(element, _bstr_("sesame"));
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    str = NULL;
+    hr = IXMLDOMElement_get_xml(element, &str);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+
+    expected = L"<open>sesame</open>";
+    ok(!lstrcmpW(str, expected), "Incorrect element string, got '%s'\n", wine_dbgstr_w(str));
+    SysFreeString(str);
+
+    IXMLDOMElement_Release(element);
+    IXMLDOMDocument2_Release(doc);
+    free_bstrs();
+}
+
 static void test_indent(void)
 {
     HRESULT hr;
@@ -14596,6 +14765,7 @@ START_TEST(domdoc)
     test_xsltext();
     test_max_element_depth_values();
     test_get_parentNode();
+    test_put_text();
 
     if (is_clsid_supported(&CLSID_MXNamespaceManager40, &IID_IMXNamespaceManager))
     {
-- 
GitLab


https://gitlab.winehq.org/wine/wine/-/merge_requests/10202