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| 1 // Copyright 2010 Google Inc. | |
| 2 // | |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
| 4 // you may not use this file except in compliance with the License. | |
| 5 // You may obtain a copy of the License at | |
| 6 // | |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 | |
| 8 // | |
| 9 // Unless required by applicable law or agreed to in writing, software | |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, | |
| 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 12 // See the License for the specific language governing permissions and | |
| 13 // limitations under the License. | |
| 14 // ======================================================================== | |
| 15 | |
| 16 #include "omaha/plugins/update/npapi/npfunction_host.h" | |
| 17 | |
| 18 #include "omaha/base/debug.h" | |
| 19 #include "omaha/base/utils.h" | |
| 20 #include "omaha/plugins/update/npapi/variant_utils.h" | |
| 21 | |
| 22 namespace omaha { | |
| 23 | |
| 24 typedef CComObject<NpFunctionHost> CComNpFuncHost; | |
| 25 typedef scoped_any<CComNpFuncHost*, close_release_com, null_t> scoped_host; | |
| 26 | |
| 27 HRESULT NpFunctionHost::Create(NPP npp, NPObject* npobj, IDispatch** host) { | |
| 28 ASSERT1(npobj); | |
| 29 ASSERT1(host); | |
| 30 | |
| 31 if (!npobj || !host) { | |
| 32 return E_INVALIDARG; | |
| 33 } | |
| 34 | |
| 35 // Create the host and hand off the NPObject to it. | |
| 36 scoped_host comobj; | |
| 37 HRESULT hr = CComNpFuncHost::CreateInstance(address(comobj)); | |
| 38 if (FAILED(hr)) { | |
| 39 return hr; | |
| 40 } | |
| 41 get(comobj)->AddRef(); | |
| 42 | |
| 43 comobj->npp_ = npp; | |
| 44 comobj->obj_ = npobj; | |
| 45 NPN_RetainObject(npobj); | |
| 46 | |
| 47 return comobj->QueryInterface(host); | |
| 48 } | |
| 49 | |
| 50 STDMETHODIMP NpFunctionHost::GetTypeInfoCount(UINT* pctinfo) { | |
| 51 if (pctinfo == NULL) { | |
| 52 return E_INVALIDARG; | |
| 53 } | |
| 54 *pctinfo = 0; | |
| 55 return S_OK; | |
| 56 } | |
| 57 | |
| 58 STDMETHODIMP NpFunctionHost::GetTypeInfo(UINT iTInfo, | |
| 59 LCID lcid, | |
| 60 ITypeInfo** ppTInfo) { | |
| 61 UNREFERENCED_PARAMETER(iTInfo); | |
| 62 UNREFERENCED_PARAMETER(lcid); | |
| 63 UNREFERENCED_PARAMETER(ppTInfo); | |
| 64 | |
| 65 return E_NOTIMPL; | |
| 66 } | |
| 67 | |
| 68 STDMETHODIMP NpFunctionHost::GetIDsOfNames(REFIID riid, | |
| 69 LPOLESTR* rgszNames, | |
| 70 UINT cNames, | |
| 71 LCID lcid, | |
| 72 DISPID* rgDispId) { | |
| 73 UNREFERENCED_PARAMETER(riid); | |
| 74 UNREFERENCED_PARAMETER(rgszNames); | |
| 75 UNREFERENCED_PARAMETER(cNames); | |
| 76 UNREFERENCED_PARAMETER(lcid); | |
| 77 UNREFERENCED_PARAMETER(rgDispId); | |
| 78 | |
| 79 return E_NOTIMPL; | |
| 80 } | |
| 81 | |
| 82 STDMETHODIMP NpFunctionHost::Invoke(DISPID dispIdMember, | |
| 83 REFIID riid, | |
| 84 LCID lcid, | |
| 85 WORD wFlags, | |
| 86 DISPPARAMS* pDispParams, | |
| 87 VARIANT* pVarResult, | |
| 88 EXCEPINFO* pExcepInfo, | |
| 89 UINT* puArgErr) { | |
| 90 UNREFERENCED_PARAMETER(dispIdMember); | |
| 91 UNREFERENCED_PARAMETER(riid); | |
| 92 UNREFERENCED_PARAMETER(lcid); | |
| 93 UNREFERENCED_PARAMETER(pExcepInfo); | |
| 94 UNREFERENCED_PARAMETER(puArgErr); | |
| 95 | |
| 96 if (wFlags != DISPATCH_METHOD) { | |
| 97 return DISP_E_MEMBERNOTFOUND; | |
| 98 } | |
| 99 | |
| 100 uint32_t num_args = 0; | |
| 101 scoped_array<NPVariant> arguments; | |
| 102 if (pDispParams) { | |
| 103 // Javascript doesn't officially support named args, so the current | |
| 104 // implementation ignores any named args that are supplied. However, | |
| 105 // you can cast a function object to a string and it will hold the | |
| 106 // argument names as used in the function definition. Thus, if we | |
| 107 // need to support named arguments in the future, we may be able to | |
| 108 // get the argument names indirectly using NPN_Evaluate() and emulate. | |
| 109 if (pDispParams->cNamedArgs != 0) { | |
| 110 return DISP_E_NONAMEDARGS; | |
| 111 } | |
| 112 if (pDispParams->cArgs != 0) { | |
| 113 num_args = pDispParams->cArgs; | |
| 114 arguments.reset(new NPVariant[num_args]); | |
| 115 for (uint32_t i = 0; i < num_args; ++i) { | |
| 116 // Arguments are stored in rgvarg in reverse order. | |
| 117 VariantToNPVariant(npp_, | |
| 118 pDispParams->rgvarg[num_args - 1 - i], | |
| 119 &arguments[i]); | |
| 120 } | |
| 121 } | |
| 122 } | |
| 123 | |
| 124 NPVariant retval; | |
| 125 VOID_TO_NPVARIANT(retval); | |
| 126 | |
| 127 bool result = NPN_InvokeDefault(npp_, | |
| 128 obj_, | |
| 129 arguments.get(), | |
| 130 num_args, | |
| 131 &retval); | |
| 132 if (result && pVarResult) { | |
| 133 NPVariantToVariant(npp_, retval, pVarResult); | |
| 134 } | |
| 135 NPN_ReleaseVariantValue(&retval); | |
| 136 | |
| 137 return result ? S_OK : E_FAIL; | |
| 138 } | |
| 139 | |
| 140 void NpFunctionHost::FinalRelease() { | |
| 141 ASSERT1(obj_); | |
| 142 if (obj_) { | |
| 143 NPN_ReleaseObject(obj_); | |
| 144 obj_ = NULL; | |
| 145 } | |
| 146 } | |
| 147 | |
| 148 NpFunctionHost::NpFunctionHost() : npp_(NULL), obj_(NULL) {} | |
| 149 | |
| 150 } // namespace omaha | |
| 151 | |
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Chromium Code Reviews
Issue 624713003:
Keep only base/extractor.[cc|h]. (Closed)
Base URL: https://chromium.googlesource.com/external/omaha.git@master