[PATCH 2/2] jscript: Make most builtin global objects configurable.

[Gabriel Ivăncescu]

From: Gabriel Ivăncescu

Signed-off-by: Gabriel Ivăncescu 
---
 dlls/jscript/global.c    | 42 +++++++++---------
 dlls/jscript/set.c       |  6 +--
 dlls/mshtml/tests/es5.js | 96 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 120 insertions(+), 24 deletions(-)

diff --git a/dlls/jscript/global.c b/dlls/jscript/global.c
index 2653d72cd2b..bb2fd26335b 100644
--- a/dlls/jscript/global.c
+++ b/dlls/jscript/global.c
@@ -943,7 +943,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Function", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Function", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->function_constr));
     if(FAILED(hres))
         return hres;
@@ -952,7 +952,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Object", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Object", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->object_constr));
     if(FAILED(hres))
         return hres;
@@ -961,7 +961,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Array", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Array", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->array_constr));
     if(FAILED(hres))
         return hres;
@@ -970,7 +970,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Boolean", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Boolean", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->bool_constr));
     if(FAILED(hres))
         return hres;
@@ -979,7 +979,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Date", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Date", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->date_constr));
     if(FAILED(hres))
         return hres;
@@ -988,7 +988,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Enumerator", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Enumerator", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->enumerator_constr));
     if(FAILED(hres))
         return hres;
@@ -997,42 +997,42 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Error", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Error", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->error_constr));
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"EvalError", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"EvalError", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->eval_error_constr));
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"RangeError", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"RangeError", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->range_error_constr));
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"ReferenceError", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"ReferenceError", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->reference_error_constr));
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"RegExpError", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"RegExpError", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->regexp_error_constr));
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"SyntaxError", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"SyntaxError", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->syntax_error_constr));
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"TypeError", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"TypeError", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->type_error_constr));
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"URIError", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"URIError", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->uri_error_constr));
     if(FAILED(hres))
         return hres;
@@ -1041,7 +1041,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Number", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Number", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->number_constr));
     if(FAILED(hres))
         return hres;
@@ -1050,7 +1050,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"RegExp", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"RegExp", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->regexp_constr));
     if(FAILED(hres))
         return hres;
@@ -1059,7 +1059,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"String", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"String", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->string_constr));
     if(FAILED(hres))
         return hres;
@@ -1068,7 +1068,7 @@ static HRESULT init_constructors(script_ctx_t *ctx, jsdisp_t *object_prototype)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"VBArray", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"VBArray", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(ctx->vbarray_constr));
     if(FAILED(hres))
         return hres;
@@ -1105,7 +1105,7 @@ HRESULT init_global(script_ctx_t *ctx)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Math", PROPF_WRITABLE, jsval_obj(math));
+    hres = jsdisp_define_data_property(ctx->global, L"Math", PROPF_CONFIGURABLE | PROPF_WRITABLE, jsval_obj(math));
     jsdisp_release(math);
     if(FAILED(hres))
         return hres;
@@ -1117,7 +1117,7 @@ HRESULT init_global(script_ctx_t *ctx)
         if(FAILED(hres))
             return hres;

-        hres = jsdisp_define_data_property(ctx->global, L"JSON", PROPF_WRITABLE, jsval_obj(json));
+        hres = jsdisp_define_data_property(ctx->global, L"JSON", PROPF_CONFIGURABLE | PROPF_WRITABLE, jsval_obj(json));
         jsdisp_release(json);
         if(FAILED(hres))
             return hres;
@@ -1127,7 +1127,7 @@ HRESULT init_global(script_ctx_t *ctx)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"ActiveXObject", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"ActiveXObject", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(constr));
     jsdisp_release(constr);
     if(FAILED(hres))
diff --git a/dlls/jscript/set.c b/dlls/jscript/set.c
index 5a568607a43..c114e3fd6e2 100644
--- a/dlls/jscript/set.c
+++ b/dlls/jscript/set.c
@@ -903,7 +903,7 @@ HRESULT init_set_constructor(script_ctx_t *ctx)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Set", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Set", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(constructor));
     jsdisp_release(constructor);
     if(FAILED(hres))
@@ -918,7 +918,7 @@ HRESULT init_set_constructor(script_ctx_t *ctx)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"Map", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"Map", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(constructor));
     jsdisp_release(constructor);
     if(FAILED(hres))
@@ -933,7 +933,7 @@ HRESULT init_set_constructor(script_ctx_t *ctx)
     if(FAILED(hres))
         return hres;

-    hres = jsdisp_define_data_property(ctx->global, L"WeakMap", PROPF_WRITABLE,
+    hres = jsdisp_define_data_property(ctx->global, L"WeakMap", PROPF_CONFIGURABLE | PROPF_WRITABLE,
                                        jsval_obj(constructor));
     jsdisp_release(constructor);
     return hres;
diff --git a/dlls/mshtml/tests/es5.js b/dlls/mshtml/tests/es5.js
index 3adb7cc1d61..d88f26e940a 100644
--- a/dlls/mshtml/tests/es5.js
+++ b/dlls/mshtml/tests/es5.js
@@ -23,6 +23,7 @@ var JS_E_NUMBER_EXPECTED = 0x800a1389;
 var JS_E_FUNCTION_EXPECTED = 0x800a138a;
 var JS_E_DATE_EXPECTED = 0x800a138e;
 var JS_E_OBJECT_EXPECTED = 0x800a138f;
+var JS_E_UNDEFINED_VARIABLE = 0x800a1391;
 var JS_E_BOOLEAN_EXPECTED = 0x800a1392;
 var JS_E_VBARRAY_EXPECTED = 0x800a1395;
 var JS_E_ENUMERATOR_EXPECTED = 0x800a1397;
@@ -2153,6 +2154,101 @@ sync_test("builtin_context", function() {
     ok(obj.length === 1, "obj.length = " + obj.length);
 });

+sync_test("builtin override", function() {
+    /* configurable */
+    var builtins = [
+        "ActiveXObject",
+        "Array",
+        "ArrayBuffer",
+        "Boolean",
+        "CollectGarbage",
+        "DataView",
+        "Date",
+        "decodeURI",
+        "decodeURIComponent",
+        "encodeURI",
+        "encodeURIComponent",
+        "Enumerator",
+        "Error",
+        "escape",
+        "EvalError",
+        "Function",
+        "isFinite",
+        "isNaN",
+        "JSON",
+        "Map",
+        "Math",
+        "Number",
+        "parseFloat",
+        "parseInt",
+        "RangeError",
+        "ReferenceError",
+        "RegExp",
+        "ScriptEngine",
+        "ScriptEngineBuildVersion",
+        "ScriptEngineMajorVersion",
+        "ScriptEngineMinorVersion",
+        "Set",
+        "String",
+        "SyntaxError",
+        "TypeError",
+        "unescape",
+        "URIError",
+        "VBArray",
+        "WeakMap"
+    ];
+
+    var override = {
+        value: 12,
+        configurable: true,
+        writable: true
+    };
+    for(var i = 0; i < builtins.length; i++) {
+        var desc = Object.getOwnPropertyDescriptor(window, builtins[i]), r;
+        ok(desc !== undefined, "getOwnPropertyDescriptor('" + builtins[i] + "' returned undefined");
+        ok(desc.configurable === true, builtins[i] + " not configurable");
+        ok(desc.enumerable === false, builtins[i] + " is enumerable");
+        ok(desc.writable === true, builtins[i] + " not writable");
+
+        r = Object.defineProperty(window, builtins[i], override);
+        ok(r === window, "defineProperty('" + builtins[i] + "' returned " + r);
+        r = Object.getOwnPropertyDescriptor(window, builtins[i]);
+        ok(r !== undefined, "getOwnPropertyDescriptor('" + builtins[i] + "' after override returned undefined");
+        ok(r.value === 12, builtins[i] + " value = " + r.value);
+
+        r = eval(builtins[i]);
+        ok(r === window[builtins[i]], "Global " + builtins[i] + " does not match redefined window." + builtins[i]);
+        r = (delete window[builtins[i]]);
+        ok(r === true, "delete window." + builtins[i] + " returned " + r);
+        ok(!(builtins[i] in window), builtins[i] + " in window after delete");
+        try {
+            eval(builtins[i]);
+            ok(false, "expected exception retrieving global " + builtins[i] + " after delete.");
+        }catch(ex) {
+            var n = ex.number >>> 0;
+            ok(n === JS_E_UNDEFINED_VARIABLE, "retrieving global " + builtins[i] + " after delete threw " + n);
+        }
+
+        r = Object.defineProperty(window, builtins[i], desc);
+        ok(r === window, "defineProperty('" + builtins[i] + "' to restore returned " + r);
+    }
+
+    /* non-configurable */
+    builtins = [
+        "undefined",
+        "Infinity",
+        "NaN"
+    ];
+
+    for(var i = 0; i < builtins.length; i++) {
+        var desc = Object.getOwnPropertyDescriptor(window, builtins[i]), r;
+        ok(desc !== undefined, "getOwnPropertyDescriptor('" + builtins[i] + "' returned undefined");
+        ok(desc.configurable === false, builtins[i] + " is configurable");
+        ok(desc.enumerable === false, builtins[i] + " is enumerable");
+        ok(desc.writable === false, builtins[i] + " is writable");
+    }
+});
+
 sync_test("host this", function() {
     var tests = [ undefined, null, external.nullDisp, function() {}, [0], "foobar", true, 42, new Number(42), external.testHostContext(true), window, document ];
     var i, obj = Object.create(Function.prototype);