src/content/renderer/pepper/host_globals.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/pepper/host_globals.h"
   6
   7 #include <limits>
   8
   9 #include "base/command_line.h"
  10 #include "base/logging.h"
  11 #include "base/rand_util.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/task_runner.h"
  14 #include "content/public/common/content_switches.h"
  15 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
  16 #include "content/renderer/pepper/plugin_module.h"
  17 #include "content/renderer/render_thread_impl.h"
  18 #include "ppapi/shared_impl/api_id.h"
  19 #include "ppapi/shared_impl/id_assignment.h"
  20 #include "ppapi/shared_impl/proxy_lock.h"
  21 #include "third_party/WebKit/public/platform/WebString.h"
  22 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
  23 #include "third_party/WebKit/public/web/WebDocument.h"
  24 #include "third_party/WebKit/public/web/WebElement.h"
  25 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  26 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  27
  28 using ppapi::CheckIdType;
  29 using ppapi::MakeTypedId;
  30 using ppapi::PPIdType;
  31 using ppapi::ResourceTracker;
  32 using blink::WebConsoleMessage;
  33 using blink::WebLocalFrame;
  34 using blink::WebPluginContainer;
  35 using blink::WebString;
  36
  37 namespace content {
  38
  39 namespace {
  40
  41 typedef std::set<WebPluginContainer*> ContainerSet;
  42
  43 // Adds all WebPluginContainers associated with the given module to the set.
  44 void GetAllContainersForModule(PluginModule* module, ContainerSet* containers) {
  45   const PluginModule::PluginInstanceSet& instances = module->GetAllInstances();
  46   for (PluginModule::PluginInstanceSet::const_iterator i = instances.begin();
  47        i != instances.end();
  48        ++i) {
  49     WebPluginContainer* container = (*i)->container();
  50     // If "Delete" is called on an instance, the instance sets its container to
  51     // NULL, but the instance may actually outlive its container. Callers of
  52     // GetAllContainersForModule only want to know about valid containers.
  53     if (container)
  54       containers->insert(container);
  55   }
  56 }
  57
  58 WebConsoleMessage::Level LogLevelToWebLogLevel(PP_LogLevel level) {
  59   switch (level) {
  60     case PP_LOGLEVEL_TIP:
  61       return WebConsoleMessage::LevelDebug;
  62     case PP_LOGLEVEL_LOG:
  63       return WebConsoleMessage::LevelLog;
  64     case PP_LOGLEVEL_WARNING:
  65       return WebConsoleMessage::LevelWarning;
  66     case PP_LOGLEVEL_ERROR:
  67     default:
  68       return WebConsoleMessage::LevelError;
  69   }
  70 }
  71
  72 WebConsoleMessage MakeLogMessage(PP_LogLevel level,
  73                                  const std::string& source,
  74                                  const std::string& message) {
  75   std::string result = source;
  76   if (!result.empty())
  77     result.append(": ");
  78   result.append(message);
  79   return WebConsoleMessage(LogLevelToWebLogLevel(level),
  80                            WebString(base::UTF8ToUTF16(result)));
  81 }
  82
  83 }  // namespace
  84
  85 HostGlobals* HostGlobals::host_globals_ = NULL;
  86
  87 HostGlobals::HostGlobals()
  88     : ppapi::PpapiGlobals(),
  89       resource_tracker_(ResourceTracker::SINGLE_THREADED) {
  90   DCHECK(!host_globals_);
  91   host_globals_ = this;
  92   // We do not support calls off of the main thread on the host side, and thus
  93   // do not lock.
  94   ppapi::ProxyLock::DisableLocking();
  95 }
  96
  97 HostGlobals::~HostGlobals() {
  98   DCHECK(host_globals_ == this || !host_globals_);
  99   host_globals_ = NULL;
 100 }
 101
 102 ppapi::ResourceTracker* HostGlobals::GetResourceTracker() {
 103   return &resource_tracker_;
 104 }
 105
 106 ppapi::VarTracker* HostGlobals::GetVarTracker() { return &host_var_tracker_; }
 107
 108 ppapi::CallbackTracker* HostGlobals::GetCallbackTrackerForInstance(
 109     PP_Instance instance) {
 110   InstanceMap::iterator found = instance_map_.find(instance);
 111   if (found == instance_map_.end())
 112     return NULL;
 113   return found->second->module()->GetCallbackTracker().get();
 114 }
 115
 116 ppapi::thunk::PPB_Instance_API* HostGlobals::GetInstanceAPI(
 117     PP_Instance instance) {
 118   // The InstanceAPI is just implemented by the PluginInstance object.
 119   return GetInstance(instance);
 120 }
 121
 122 ppapi::thunk::ResourceCreationAPI* HostGlobals::GetResourceCreationAPI(
 123     PP_Instance pp_instance) {
 124   PepperPluginInstanceImpl* instance = GetInstance(pp_instance);
 125   if (!instance)
 126     return NULL;
 127   return &instance->resource_creation();
 128 }
 129
 130 PP_Module HostGlobals::GetModuleForInstance(PP_Instance instance) {
 131   PepperPluginInstanceImpl* inst = GetInstance(instance);
 132   if (!inst)
 133     return 0;
 134   return inst->module()->pp_module();
 135 }
 136
 137 std::string HostGlobals::GetCmdLine() {
 138   return CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
 139       switches::kPpapiFlashArgs);
 140 }
 141
 142 void HostGlobals::PreCacheFontForFlash(const void* logfontw) {
 143   // Not implemented in-process.
 144 }
 145
 146 void HostGlobals::LogWithSource(PP_Instance instance,
 147                                 PP_LogLevel level,
 148                                 const std::string& source,
 149                                 const std::string& value) {
 150   PepperPluginInstanceImpl* instance_object =
 151       HostGlobals::Get()->GetInstance(instance);
 152   if (instance_object) {
 153     instance_object->container()
 154         ->element()
 155         .document()
 156         .frame()
 157         ->addMessageToConsole(MakeLogMessage(level, source, value));
 158   } else {
 159     BroadcastLogWithSource(0, level, source, value);
 160   }
 161 }
 162
 163 void HostGlobals::BroadcastLogWithSource(PP_Module pp_module,
 164                                          PP_LogLevel level,
 165                                          const std::string& source,
 166                                          const std::string& value) {
 167   // Get the unique containers associated with the broadcast. This prevents us
 168   // from sending the same message to the same console when there are two
 169   // instances on the page.
 170   ContainerSet containers;
 171   PluginModule* module = GetModule(pp_module);
 172   if (module) {
 173     GetAllContainersForModule(module, &containers);
 174   } else {
 175     // Unknown module, get containers for all modules.
 176     for (ModuleMap::const_iterator i = module_map_.begin();
 177          i != module_map_.end();
 178          ++i) {
 179       GetAllContainersForModule(i->second, &containers);
 180     }
 181   }
 182
 183   WebConsoleMessage message = MakeLogMessage(level, source, value);
 184   for (ContainerSet::iterator i = containers.begin(); i != containers.end();
 185        ++i) {
 186     WebLocalFrame* frame = (*i)->element().document().frame();
 187     if (frame)
 188       frame->addMessageToConsole(message);
 189   }
 190 }
 191
 192 base::TaskRunner* HostGlobals::GetFileTaskRunner() {
 193   return RenderThreadImpl::current()->GetFileThreadMessageLoopProxy().get();
 194 }
 195
 196 ppapi::MessageLoopShared* HostGlobals::GetCurrentMessageLoop() { return NULL; }
 197
 198 PP_Module HostGlobals::AddModule(PluginModule* module) {
 199 #ifndef NDEBUG
 200   // Make sure we're not adding one more than once.
 201   for (ModuleMap::const_iterator i = module_map_.begin();
 202        i != module_map_.end();
 203        ++i)
 204     DCHECK(i->second != module);
 205 #endif
 206
 207   // See AddInstance.
 208   PP_Module new_module;
 209   do {
 210     new_module = MakeTypedId(static_cast<PP_Module>(base::RandUint64()),
 211                              ppapi::PP_ID_TYPE_MODULE);
 212   } while (!new_module || module_map_.find(new_module) != module_map_.end());
 213   module_map_[new_module] = module;
 214   return new_module;
 215 }
 216
 217 void HostGlobals::ModuleDeleted(PP_Module module) {
 218   DLOG_IF(ERROR, !CheckIdType(module, ppapi::PP_ID_TYPE_MODULE))
 219       << module << " is not a PP_Module.";
 220   ModuleMap::iterator found = module_map_.find(module);
 221   if (found == module_map_.end()) {
 222     NOTREACHED();
 223     return;
 224   }
 225   module_map_.erase(found);
 226 }
 227
 228 PluginModule* HostGlobals::GetModule(PP_Module module) {
 229   DLOG_IF(ERROR, !CheckIdType(module, ppapi::PP_ID_TYPE_MODULE))
 230       << module << " is not a PP_Module.";
 231   ModuleMap::iterator found = module_map_.find(module);
 232   if (found == module_map_.end())
 233     return NULL;
 234   return found->second;
 235 }
 236
 237 PP_Instance HostGlobals::AddInstance(PepperPluginInstanceImpl* instance) {
 238   DCHECK(instance_map_.find(instance->pp_instance()) == instance_map_.end());
 239
 240   // Use a random number for the instance ID. This helps prevent some
 241   // accidents. See also AddModule below.
 242   //
 243   // Need to make sure the random number isn't a duplicate or 0.
 244   PP_Instance new_instance;
 245   do {
 246     new_instance = MakeTypedId(static_cast<PP_Instance>(base::RandUint64()),
 247                                ppapi::PP_ID_TYPE_INSTANCE);
 248   } while (!new_instance ||
 249            instance_map_.find(new_instance) != instance_map_.end() ||
 250            !instance->module()->ReserveInstanceID(new_instance));
 251
 252   instance_map_[new_instance] = instance;
 253
 254   resource_tracker_.DidCreateInstance(new_instance);
 255   return new_instance;
 256 }
 257
 258 void HostGlobals::InstanceDeleted(PP_Instance instance) {
 259   resource_tracker_.DidDeleteInstance(instance);
 260   host_var_tracker_.DidDeleteInstance(instance);
 261   instance_map_.erase(instance);
 262 }
 263
 264 void HostGlobals::InstanceCrashed(PP_Instance instance) {
 265   resource_tracker_.DidDeleteInstance(instance);
 266   host_var_tracker_.DidDeleteInstance(instance);
 267 }
 268
 269 PepperPluginInstanceImpl* HostGlobals::GetInstance(PP_Instance instance) {
 270   DLOG_IF(ERROR, !CheckIdType(instance, ppapi::PP_ID_TYPE_INSTANCE))
 271       << instance << " is not a PP_Instance.";
 272   InstanceMap::iterator found = instance_map_.find(instance);
 273   if (found == instance_map_.end())
 274     return NULL;
 275   return found->second;
 276 }
 277
 278 bool HostGlobals::IsHostGlobals() const { return true; }
 279
 280 }  // namespace content