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

chrome/common/pepper_plugin_registry.cc

Index: chrome/common/pepper_plugin_registry.cc
===================================================================
--- chrome/common/pepper_plugin_registry.cc	(revision 81952)
+++ chrome/common/pepper_plugin_registry.cc	(working copy)
@@ -1,433 +0,0 @@
-// 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 "chrome/common/pepper_plugin_registry.h"
-
-#include "base/command_line.h"
-#include "base/file_util.h"
-#include "base/native_library.h"
-#include "base/path_service.h"
-#include "base/string_split.h"
-#include "base/string_util.h"
-#include "base/utf_string_conversions.h"
-#include "chrome/common/chrome_paths.h"
-#include "chrome/common/chrome_switches.h"
-#include "content/common/child_process.h"
-#include "content/common/content_switches.h"
-#include "remoting/client/plugin/pepper_entrypoints.h"
-#include "webkit/plugins/npapi/plugin_list.h"
-
-namespace {
-
-const char* kPDFPluginName = "Chrome PDF Viewer";
-const char* kPDFPluginMimeType = "application/pdf";
-const char* kPDFPluginExtension = "pdf";
-const char* kPDFPluginDescription = "Portable Document Format";
-
-const char* kNaClPluginName = "Chrome NaCl";
-const char* kNaClPluginMimeType = "application/x-nacl";
-const char* kNaClPluginExtension = "nexe";
-const char* kNaClPluginDescription = "Native Client Executable";
-
-#if defined(ENABLE_REMOTING)
-const char* kRemotingPluginMimeType = "pepper-application/x-chromoting";
-#endif
-
-const char* kFlashPluginName = "Shockwave Flash";
-const char* kFlashPluginSwfMimeType = "application/x-shockwave-flash";
-const char* kFlashPluginSwfExtension = "swf";
-const char* kFlashPluginSwfDescription = "Shockwave Flash";
-const char* kFlashPluginSplMimeType = "application/futuresplash";
-const char* kFlashPluginSplExtension = "spl";
-const char* kFlashPluginSplDescription = "FutureSplash Player";
-
-// Appends the known built-in plugins to the given vector. Some built-in
-// plugins are "internal" which means they are compiled into the Chrome binary,
-// and some are extra shared libraries distributed with the browser (these are
-// not marked internal, aside from being automatically registered, they're just
-// regular plugins).
-void ComputeBuiltInPlugins(std::vector<PepperPluginInfo>* plugins) {
-  // PDF.
-  //
-  // Once we're sandboxed, we can't know if the PDF plugin is available or not;
-  // but (on Linux) this function is always called once before we're sandboxed.
-  // So the first time through test if the file is available and then skip the
-  // check on subsequent calls if yes.
-  static bool skip_pdf_file_check = false;
-  FilePath path;
-  if (PathService::Get(chrome::FILE_PDF_PLUGIN, &path)) {
-    if (skip_pdf_file_check || file_util::PathExists(path)) {
-      PepperPluginInfo pdf;
-      pdf.path = path;
-      pdf.name = kPDFPluginName;
-      webkit::npapi::WebPluginMimeType pdf_mime_type(kPDFPluginMimeType,
-                                                     kPDFPluginExtension,
-                                                     kPDFPluginDescription);
-      pdf.mime_types.push_back(pdf_mime_type);
-      plugins->push_back(pdf);
-
-      skip_pdf_file_check = true;
-    }
-  }
-
-  // Handle the Native Client plugin just like the PDF plugin.
-  static bool skip_nacl_file_check = false;
-  if (PathService::Get(chrome::FILE_NACL_PLUGIN, &path)) {
-    if (skip_nacl_file_check || file_util::PathExists(path)) {
-      PepperPluginInfo nacl;
-      nacl.path = path;
-      nacl.name = kNaClPluginName;
-      webkit::npapi::WebPluginMimeType nacl_mime_type(kNaClPluginMimeType,
-                                                      kNaClPluginExtension,
-                                                      kNaClPluginDescription);
-      nacl.mime_types.push_back(nacl_mime_type);
-      plugins->push_back(nacl);
-
-      skip_nacl_file_check = true;
-    }
-  }
-
-  // Remoting.
-#if defined(ENABLE_REMOTING)
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kEnableRemoting)) {
-    PepperPluginInfo info;
-    info.is_internal = true;
-    info.path = FilePath(FILE_PATH_LITERAL("internal-chromoting"));
-    webkit::npapi::WebPluginMimeType remoting_mime_type(kRemotingPluginMimeType,
-                                                        std::string(),
-                                                        std::string());
-    info.mime_types.push_back(remoting_mime_type);
-    info.internal_entry_points.get_interface = remoting::PPP_GetInterface;
-    info.internal_entry_points.initialize_module =
-        remoting::PPP_InitializeModule;
-    info.internal_entry_points.shutdown_module = remoting::PPP_ShutdownModule;
-
-    plugins->push_back(info);
-  }
-#endif
-}
-
-// Appends any plugins from the command line to the given vector.
-void ComputePluginsFromCommandLine(std::vector<PepperPluginInfo>* plugins) {
-  // Flash being out of process is handled separately than general plugins
-  // for testing purposes.
-  bool out_of_process =
-      CommandLine::ForCurrentProcess()->HasSwitch(switches::kPpapiOutOfProcess);
-  bool flash_out_of_process = !CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kPpapiFlashInProcess);
-
-  // Handle any Pepper Flash first.
-  const CommandLine::StringType flash_path =
-      CommandLine::ForCurrentProcess()->GetSwitchValueNative(
-          switches::kPpapiFlashPath);
-  if (!flash_path.empty()) {
-    PepperPluginInfo plugin;
-    plugin.is_out_of_process = flash_out_of_process;
-    plugin.path = FilePath(flash_path);
-    plugin.name = kFlashPluginName;
-
-    const std::string flash_version =
-        CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
-                switches::kPpapiFlashVersion);
-    std::vector<std::string> flash_version_numbers;
-    base::SplitString(flash_version, '.', &flash_version_numbers);
-    if (flash_version_numbers.size() < 1)
-      flash_version_numbers.push_back("10");
-    // |SplitString()| puts in an empty string given an empty string. :(
-    else if (flash_version_numbers[0].empty())
-      flash_version_numbers[0] = "10";
-    if (flash_version_numbers.size() < 2)
-      flash_version_numbers.push_back("2");
-    if (flash_version_numbers.size() < 3)
-      flash_version_numbers.push_back("999");
-    if (flash_version_numbers.size() < 4)
-      flash_version_numbers.push_back("999");
-    // E.g., "Shockwave Flash 10.2 r154":
-    plugin.description = plugin.name + " " + flash_version_numbers[0] + "." +
-        flash_version_numbers[1] + " r" + flash_version_numbers[2];
-    plugin.version = JoinString(flash_version_numbers, '.');
-    webkit::npapi::WebPluginMimeType swf_mime_type(kFlashPluginSwfMimeType,
-                                                   kFlashPluginSwfExtension,
-                                                   kFlashPluginSwfDescription);
-    plugin.mime_types.push_back(swf_mime_type);
-    webkit::npapi::WebPluginMimeType spl_mime_type(kFlashPluginSplMimeType,
-                                                   kFlashPluginSplExtension,
-                                                   kFlashPluginSplDescription);
-    plugin.mime_types.push_back(spl_mime_type);
-    plugins->push_back(plugin);
-  }
-
-  // Handle other plugins.
-  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
-
-const char* PepperPluginRegistry::kPDFPluginName = ::kPDFPluginName;
-
-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;
-
-  // Enable the Native Client Plugin based on the command line.
-  // TODO(abarth): This is the wrong place to do this work!
-  if (name == kNaClPluginName) {
-    bool nacl_enabled =
-        CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableNaCl);
-    enabled_state = nacl_enabled ?
-        webkit::npapi::WebPluginInfo::USER_ENABLED_POLICY_UNMANAGED :
-        webkit::npapi::WebPluginInfo::USER_DISABLED_POLICY_UNMANAGED;
-  }
-  info.enabled = enabled_state;
-  return info;
-}
-
-PepperPluginInfo::PepperPluginInfo()
-    : is_internal(false),
-      is_out_of_process(false) {
-}
-
-PepperPluginInfo::~PepperPluginInfo() {
-}
-
-NaClModuleInfo::NaClModuleInfo() {
-}
-
-NaClModuleInfo::~NaClModuleInfo() {
-}
-
-// 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) {
-  ComputeBuiltInPlugins(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;
-}
-
-void PepperPluginRegistry::RegisterNaClModule(const GURL& url,
-                                              const std::string& mime_type) {
-  NaClModuleInfo info;
-  info.url = url;
-  info.mime_type = mime_type;
-
-  DCHECK(FindNaClModule(url) == nacl_module_list_.end());
-  nacl_module_list_.push_front(info);
-}
-
-void PepperPluginRegistry::UnregisterNaClModule(const GURL& url) {
-  NaClModuleInfoList::iterator iter = FindNaClModule(url);
-  DCHECK(iter != nacl_module_list_.end());
-  nacl_module_list_.erase(iter);
-}
-
-void PepperPluginRegistry::UpdatePluginListWithNaClModules() {
-  FilePath path;
-  PathService::Get(chrome::FILE_NACL_PLUGIN, &path);
-
-  webkit::npapi::PluginList::Singleton()->UnregisterInternalPlugin(path);
-
-  const PepperPluginInfo* pepper_info = GetInfoForPlugin(path);
-  webkit::npapi::WebPluginInfo info = pepper_info->ToWebPluginInfo();
-
-  DCHECK(nacl_module_list_.size() <= 1);
-  for (NaClModuleInfoList::iterator iter = nacl_module_list_.begin();
-       iter != nacl_module_list_.end(); ++iter) {
-    webkit::npapi::WebPluginMimeType mime_type_info;
-    mime_type_info.mime_type = iter->mime_type;
-    mime_type_info.additional_param_names.push_back(UTF8ToUTF16("nacl"));
-    mime_type_info.additional_param_values.push_back(
-        UTF8ToUTF16(iter->url.spec()));
-    info.mime_types.push_back(mime_type_info);
-  }
-
-  webkit::npapi::PluginList::Singleton()->RefreshPlugins();
-  webkit::npapi::PluginList::Singleton()->RegisterInternalPlugin(info);
-}
-
-PepperPluginRegistry::NaClModuleInfoList::iterator
-    PepperPluginRegistry::FindNaClModule(const GURL& url) {
-  for (NaClModuleInfoList::iterator iter = nacl_module_list_.begin();
-       iter != nacl_module_list_.end(); ++iter) {
-    if (iter->url == url)
-      return iter;
-  }
-  return nacl_module_list_.end();
-}