tools/npapi_runtime/npobject_handle.cc

   1 /*
   2  * Copyright 2008, Google Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met:
   8  *
   9  *     * Redistributions of source code must retain the above copyright
  10  * notice, this list of conditions and the following disclaimer.
  11  *     * Redistributions in binary form must reproduce the above
  12  * copyright notice, this list of conditions and the following disclaimer
  13  * in the documentation and/or other materials provided with the
  14  * distribution.
  15  *     * Neither the name of Google Inc. nor the names of its
  16  * contributors may be used to endorse or promote products derived from
  17  * this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32
  33 #include "native_client/tools/npapi_runtime/npobject_handle.h"
  34
  35 #include "native_client/tools/npapi_runtime/npbridge.h"
  36
  37 namespace {
  38
  39 NPObject* Alloc(NPP npp, NPClass* aClass) {
  40   return nacl::NPHandleObject::GetLastAllocated();
  41 }
  42
  43 void Deallocate(NPObject* object) {
  44   delete static_cast<nacl::NPHandleObject*>(object);
  45 }
  46
  47 void Invalidate(NPObject* object) {
  48   return static_cast<nacl::NPHandleObject*>(object)->Invalidate();
  49 }
  50
  51 bool HasMethod(NPObject* object, NPIdentifier name) {
  52   return static_cast<nacl::NPHandleObject*>(object)->HasMethod(name);
  53 }
  54
  55 bool Invoke(NPObject* object, NPIdentifier name,
  56             const NPVariant* args, uint32_t arg_count,
  57             NPVariant* result) {
  58   return static_cast<nacl::NPHandleObject*>(object)->Invoke(
  59       name, args, arg_count, result);
  60 }
  61
  62 bool InvokeDefault(NPObject* object, const NPVariant* args, uint32_t arg_count,
  63                    NPVariant* result) {
  64   return static_cast<nacl::NPHandleObject*>(object)->InvokeDefault(
  65       args, arg_count, result);
  66 }
  67
  68 bool HasProperty(NPObject* object, NPIdentifier name) {
  69   return static_cast<nacl::NPHandleObject*>(object)->HasProperty(name);
  70 }
  71
  72 bool GetProperty(NPObject* object, NPIdentifier name, NPVariant* result) {
  73   return static_cast<nacl::NPHandleObject*>(object)->GetProperty(name, result);
  74 }
  75
  76 bool SetProperty(NPObject* object, NPIdentifier name, const NPVariant* value) {
  77   return static_cast<nacl::NPHandleObject*>(object)->SetProperty(name, value);
  78 }
  79
  80 bool RemoveProperty(NPObject* object, NPIdentifier name) {
  81   return static_cast<nacl::NPHandleObject*>(object)->RemoveProperty(name);
  82 }
  83
  84 NPIdentifier id_handle = NULL;
  85
  86 }  // namespace
  87
  88 namespace nacl {
  89
  90 NPClass NPHandleObject::np_class = {
  91   NP_CLASS_STRUCT_VERSION,
  92   ::Alloc,
  93   ::Deallocate,
  94   ::Invalidate,
  95   ::HasMethod,
  96   ::Invoke,
  97   ::InvokeDefault,
  98   ::HasProperty,
  99   ::GetProperty,
 100   ::SetProperty,
 101   ::RemoveProperty
 102 };
 103
 104 NPObject* NPHandleObject::last_allocated;
 105
 106 NPHandleObject::NPHandleObject(NPBridge* bridge, HtpHandle handle) {
 107   if (id_handle == NULL) {
 108     id_handle = NPN_GetStringIdentifier("handle");
 109   }
 110   handle_ = handle;
 111   last_allocated = this;
 112   NPN_CreateObject(bridge->npp(), &np_class);
 113 }
 114
 115 NPHandleObject::~NPHandleObject() {
 116   Close(handle_);
 117 }
 118
 119 void NPHandleObject::Invalidate() {
 120 }
 121
 122 bool NPHandleObject::HasMethod(NPIdentifier name) {
 123   return false;
 124 }
 125
 126 bool NPHandleObject::Invoke(NPIdentifier name,
 127                            const NPVariant* args, uint32_t arg_count,
 128                            NPVariant* variant) {
 129   return false;
 130 }
 131
 132 bool NPHandleObject::InvokeDefault(const NPVariant* args, uint32_t arg_count,
 133                                   NPVariant* variant) {
 134   return true;
 135 }
 136
 137 bool NPHandleObject::HasProperty(NPIdentifier name) {
 138   return name == id_handle;
 139 }
 140
 141 bool NPHandleObject::GetProperty(NPIdentifier name, NPVariant* variant) {
 142   static const int kHandleStringLength = 19;
 143
 144   if (name == id_handle && variant) {
 145     if (char* hex = static_cast<char*>(NPN_MemAlloc(kHandleStringLength))) {
 146 #if NACL_WINDOWS
 147       _snprintf_s(hex, kHandleStringLength, kHandleStringLength,
 148                   "0x%p", (void*) handle_);
 149 #else
 150       snprintf(hex, kHandleStringLength, "%p", (void*) handle_);
 151 #endif
 152       STRINGZ_TO_NPVARIANT(hex, *variant);
 153       return true;
 154     }
 155   }
 156   return false;
 157 }
 158
 159 bool NPHandleObject::SetProperty(NPIdentifier name, const NPVariant* value) {
 160   return false;
 161 }
 162
 163 bool NPHandleObject::RemoveProperty(NPIdentifier name) {
 164   return false;
 165 }
 166
 167 }  // namespace nacl