Move PepperPluginRegistry to content, while leaving the Chrome specific bits (NaCl, registration ...

content/common/pepper_plugin_registry.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/common/pepper_plugin_registry.h"
+
+#include "base/command_line.h"
+#include "base/file_util.h"
+#include "base/native_library.h"
+#include "base/string_split.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "content/common/child_process.h"
+#include "content/common/content_client.h"
+#include "content/common/content_switches.h"
+#include "webkit/plugins/npapi/plugin_list.h"
+
+namespace {
+
+// Appends any plugins from the command line to the given vector.
+void ComputePluginsFromCommandLine(std::vector<PepperPluginInfo>* plugins) {
+  bool out_of_process =
+      CommandLine::ForCurrentProcess()->HasSwitch(switches::kPpapiOutOfProcess);
+  const std::string value =
+      CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kRegisterPepperPlugins);
+  if (value.empty())
+    return;
+
+  // FORMAT:
+  // command-line = <plugin-entry> + *( LWS + "," + LWS + <plugin-entry> )
+  // plugin-entry =
+  //    <file-path> +
+  //    ["#" + <name> + ["#" + <description> + ["#" + <version>]]] +
+  //    *1( LWS + ";" + LWS + <mime-type> )
+
+  std::vector<std::string> modules;
+  base::SplitString(value, ',', &modules);
+  for (size_t i = 0; i < modules.size(); ++i) {
+    std::vector<std::string> parts;
+    base::SplitString(modules[i], ';', &parts);
+    if (parts.size() < 2) {
+      DLOG(ERROR) << "Required mime-type not found";
+      continue;
+    }
+
+    std::vector<std::string> name_parts;
+    base::SplitString(parts[0], '#', &name_parts);
+
+    PepperPluginInfo plugin;
+    plugin.is_out_of_process = out_of_process;
+#if defined(OS_WIN)
+    // This means we can't provide plugins from non-ASCII paths, but
+    // since this switch is only for development I don't think that's
+    // too awful.
+    plugin.path = FilePath(ASCIIToUTF16(name_parts[0]));
+#else
+    plugin.path = FilePath(name_parts[0]);
+#endif
+    if (name_parts.size() > 1)
+      plugin.name = name_parts[1];
+    if (name_parts.size() > 2)
+      plugin.description = name_parts[2];
+    if (name_parts.size() > 3)
+      plugin.version = name_parts[3];
+    for (size_t j = 1; j < parts.size(); ++j) {
+      webkit::npapi::WebPluginMimeType mime_type(parts[j],
+                                                 std::string(),
+                                                 plugin.description);
+      plugin.mime_types.push_back(mime_type);
+    }
+
+    plugins->push_back(plugin);
+  }
+}
+
+}  // namespace
+
+webkit::npapi::WebPluginInfo PepperPluginInfo::ToWebPluginInfo() const {
+  webkit::npapi::WebPluginInfo info;
+
+  info.name = name.empty() ? path.BaseName().LossyDisplayName() :
+      ASCIIToUTF16(name);
+  info.path = path;
+  info.version = ASCIIToUTF16(version);
+  info.desc = ASCIIToUTF16(description);
+  info.mime_types = mime_types;
+
+  webkit::npapi::WebPluginInfo::EnabledStates enabled_state =
+      webkit::npapi::WebPluginInfo::USER_ENABLED_POLICY_UNMANAGED;
+
+  if (!enabled) {
+    enabled_state =
+        webkit::npapi::WebPluginInfo::USER_DISABLED_POLICY_UNMANAGED;
+  }
+
+  info.enabled = enabled_state;
+  return info;
+}
+
+PepperPluginInfo::PepperPluginInfo()
+    : is_internal(false),
+      is_out_of_process(false),
+      enabled(true) {
+}
+
+PepperPluginInfo::~PepperPluginInfo() {
+}
+
+// static
+PepperPluginRegistry* PepperPluginRegistry::GetInstance() {
+  static PepperPluginRegistry* registry = NULL;
+  // This object leaks.  It is a temporary hack to work around a crash.
+  // http://code.google.com/p/chromium/issues/detail?id=63234
+  if (!registry)
+    registry = new PepperPluginRegistry;
+  return registry;
+}
+
+// static
+void PepperPluginRegistry::ComputeList(std::vector<PepperPluginInfo>* plugins) {
+  content::GetContentClient()->AddPepperPlugins(plugins);
+  ComputePluginsFromCommandLine(plugins);
+}
+
+// static
+void PepperPluginRegistry::PreloadModules() {
+  std::vector<PepperPluginInfo> plugins;
+  ComputeList(&plugins);
+  for (size_t i = 0; i < plugins.size(); ++i) {
+    if (!plugins[i].is_internal) {
+      base::NativeLibrary library = base::LoadNativeLibrary(plugins[i].path);
+      LOG_IF(WARNING, !library) << "Unable to load plugin "
+                                << plugins[i].path.value();
+    }
+  }
+}
+
+const PepperPluginInfo* PepperPluginRegistry::GetInfoForPlugin(
+    const FilePath& path) const {
+  for (size_t i = 0; i < plugin_list_.size(); ++i) {
+    if (path == plugin_list_[i].path)
+      return &plugin_list_[i];
+  }
+  return NULL;
+}
+
+webkit::ppapi::PluginModule* PepperPluginRegistry::GetLiveModule(
+    const FilePath& path) {
+  NonOwningModuleMap::iterator it = live_modules_.find(path);
+  if (it == live_modules_.end())
+    return NULL;
+  return it->second;
+}
+
+void PepperPluginRegistry::AddLiveModule(const FilePath& path,
+                                         webkit::ppapi::PluginModule* module) {
+  DCHECK(live_modules_.find(path) == live_modules_.end());
+  live_modules_[path] = module;
+}
+
+void PepperPluginRegistry::PluginModuleDead(
+    webkit::ppapi::PluginModule* dead_module) {
+  // DANGER: Don't dereference the dead_module pointer! It may be in the
+  // process of being deleted.
+
+  // Modules aren't destroyed very often and there are normally at most a
+  // couple of them. So for now we just do a brute-force search.
+  for (NonOwningModuleMap::iterator i = live_modules_.begin();
+       i != live_modules_.end(); ++i) {
+    if (i->second == dead_module) {
+      live_modules_.erase(i);
+      return;
+    }
+  }
+  NOTREACHED();  // Should have always found the module above.
+}
+
+PepperPluginRegistry::~PepperPluginRegistry() {
+  // Explicitly clear all preloaded modules first. This will cause callbacks
+  // to erase these modules from the live_modules_ list, and we don't want
+  // that to happen implicitly out-of-order.
+  preloaded_modules_.clear();
+
+  DCHECK(live_modules_.empty());
+}
+
+PepperPluginRegistry::PepperPluginRegistry() {
+  ComputeList(&plugin_list_);
+
+  // Note that in each case, AddLiveModule must be called before completing
+  // initialization. If we bail out (in the continue clauses) before saving
+  // the initialized module, it will still try to unregister itself in its
+  // destructor.
+  for (size_t i = 0; i < plugin_list_.size(); i++) {
+    const PepperPluginInfo& current = plugin_list_[i];
+    if (current.is_out_of_process)
+      continue;  // Out of process plugins need no special pre-initialization.
+
+    scoped_refptr<webkit::ppapi::PluginModule> module =
+        new webkit::ppapi::PluginModule(current.name, current.path, this);
+    AddLiveModule(current.path, module);
+    if (current.is_internal) {
+      if (!module->InitAsInternalPlugin(current.internal_entry_points)) {
+        DLOG(ERROR) << "Failed to load pepper module: " << current.path.value();
+        continue;
+      }
+    } else {
+      // Preload all external plugins we're not running out of process.
+      if (!module->InitAsLibrary(current.path)) {
+        DLOG(ERROR) << "Failed to load pepper module: " << current.path.value();
+        continue;
+      }
+    }
+    preloaded_modules_[current.path] = module;
+  }
+}
+
+MessageLoop* PepperPluginRegistry::GetIPCMessageLoop() {
+  // This is called only in the renderer so we know we have a child process.
+  DCHECK(ChildProcess::current()) << "Must be in the renderer.";
+  return ChildProcess::current()->io_message_loop();
+}
+
+base::WaitableEvent* PepperPluginRegistry::GetShutdownEvent() {
+  DCHECK(ChildProcess::current()) << "Must be in the renderer.";
+  return ChildProcess::current()->GetShutDownEvent();
+}
+
+std::set<PP_Instance>* PepperPluginRegistry::GetGloballySeenInstanceIDSet() {
+  // This function is not needed on the host side of the proxy.
+  return NULL;
+}