1 /*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "PluginTest.h"
27
28 #include "PluginObject.h"
29
30 using namespace std;
31
32 // Passing null for our NPP_GetValue function pointer should not crash.
33
34 class NullNPPGetValuePointer : public PluginTest {
35 public:
36 NullNPPGetValuePointer(NPP, const string& identifier);
37
38 private:
39 virtual NPError NPP_Destroy(NPSavedData**);
40 virtual NPError NPP_GetValue(NPPVariable, void* value);
41
42 NPP_GetValueProcPtr m_originalNPPGetValuePointer;
43 };
44
45 static PluginTest::Register<NullNPPGetValuePointer> registrar("null-npp-getvalue-pointer");
46
NullNPPGetValuePointer(NPP npp,const string & identifier)47 NullNPPGetValuePointer::NullNPPGetValuePointer(NPP npp, const string& identifier)
48 : PluginTest(npp, identifier)
49 , m_originalNPPGetValuePointer(pluginFunctions->getvalue)
50 {
51 // Be sneaky and null out the getvalue pointer the browser is holding. This simulates a plugin
52 // that doesn't implement NPP_GetValue (like Shockwave Director 10.3 on Windows). Note that if
53 // WebKit copies the NPPluginFuncs struct this technique will have no effect and WebKit will
54 // call into our NPP_GetValue implementation.
55 pluginFunctions->getvalue = 0;
56 }
57
NPP_Destroy(NPSavedData **)58 NPError NullNPPGetValuePointer::NPP_Destroy(NPSavedData**)
59 {
60 // Set the NPP_GetValue pointer back the way it was before we mucked with it so we don't mess
61 // up future uses of the plugin module.
62 pluginFunctions->getvalue = m_originalNPPGetValuePointer;
63 return NPERR_NO_ERROR;
64 }
65
NPP_GetValue(NPPVariable,void *)66 NPError NullNPPGetValuePointer::NPP_GetValue(NPPVariable, void*)
67 {
68 pluginLog(m_npp, "NPP_GetValue was called but should not have been. Maybe WebKit copied the NPPluginFuncs struct, which would invalidate this test.");
69 return NPERR_GENERIC_ERROR;
70 }
71