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 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 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 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
