cef/libcef/common/content_client.cc
2019-01-18 11:25:51 +01:00

385 lines
13 KiB
C++

// Copyright 2015 The Chromium Embedded Framework Authors.
// Portions copyright 2014 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 "libcef/common/content_client.h"
#include <stdint.h>
#include "include/cef_stream.h"
#include "include/cef_version.h"
#include "libcef/browser/content_browser_client.h"
#include "libcef/browser/extensions/pdf_extension_util.h"
#include "libcef/common/cef_switches.h"
#include "libcef/common/extensions/extensions_util.h"
#include "libcef/common/net/scheme_registration.h"
#include "libcef/common/scheme_registrar_impl.h"
#include "base/command_line.h"
#include "base/files/file_util.h"
#include "base/json/json_reader.h"
#include "base/logging.h"
#include "base/path_service.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pepper_flash.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/pepper_plugin_info.h"
#include "ppapi/shared_impl/ppapi_permissions.h"
#include "third_party/widevine/cdm/buildflags.h"
#include "ui/base/resource/resource_bundle.h"
#if defined(OS_LINUX)
#include "libcef/common/widevine_loader.h"
#endif
namespace {
CefContentClient* g_content_client = NULL;
// The following plugin-related methods are from
// chrome/common/chrome_content_client.cc
const char kPDFPluginExtension[] = "pdf";
const char kPDFPluginDescription[] = "Portable Document Format";
const char kPDFPluginOutOfProcessMimeType[] = "application/x-google-chrome-pdf";
const uint32_t kPDFPluginPermissions =
ppapi::PERMISSION_PDF | ppapi::PERMISSION_DEV;
content::PepperPluginInfo::GetInterfaceFunc g_pdf_get_interface;
content::PepperPluginInfo::PPP_InitializeModuleFunc g_pdf_initialize_module;
content::PepperPluginInfo::PPP_ShutdownModuleFunc g_pdf_shutdown_module;
// 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<content::PepperPluginInfo>* plugins) {
if (extensions::PdfExtensionEnabled()) {
content::PepperPluginInfo pdf_info;
pdf_info.is_internal = true;
pdf_info.is_out_of_process = true;
pdf_info.name = extensions::pdf_extension_util::kPdfPluginName;
pdf_info.description = kPDFPluginDescription;
pdf_info.path =
base::FilePath::FromUTF8Unsafe(CefContentClient::kPDFPluginPath);
content::WebPluginMimeType pdf_mime_type(kPDFPluginOutOfProcessMimeType,
kPDFPluginExtension,
kPDFPluginDescription);
pdf_info.mime_types.push_back(pdf_mime_type);
pdf_info.internal_entry_points.get_interface = g_pdf_get_interface;
pdf_info.internal_entry_points.initialize_module = g_pdf_initialize_module;
pdf_info.internal_entry_points.shutdown_module = g_pdf_shutdown_module;
pdf_info.permissions = kPDFPluginPermissions;
plugins->push_back(pdf_info);
}
}
content::PepperPluginInfo CreatePepperFlashInfo(const base::FilePath& path,
const std::string& version) {
content::PepperPluginInfo plugin;
plugin.is_out_of_process = true;
plugin.name = content::kFlashPluginName;
plugin.path = path;
plugin.permissions = kPepperFlashPermissions;
std::vector<std::string> flash_version_numbers = base::SplitString(
version, ".", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
if (flash_version_numbers.size() < 1)
flash_version_numbers.push_back("11");
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 = base::JoinString(flash_version_numbers, ".");
content::WebPluginMimeType swf_mime_type(content::kFlashPluginSwfMimeType,
content::kFlashPluginSwfExtension,
content::kFlashPluginSwfDescription);
plugin.mime_types.push_back(swf_mime_type);
content::WebPluginMimeType spl_mime_type(content::kFlashPluginSplMimeType,
content::kFlashPluginSplExtension,
content::kFlashPluginSplDescription);
plugin.mime_types.push_back(spl_mime_type);
return plugin;
}
void AddPepperFlashFromCommandLine(
std::vector<content::PepperPluginInfo>* plugins) {
const base::CommandLine::StringType flash_path =
base::CommandLine::ForCurrentProcess()->GetSwitchValueNative(
switches::kPpapiFlashPath);
if (flash_path.empty())
return;
// Also get the version from the command-line. Should be something like 11.2
// or 11.2.123.45.
std::string flash_version =
base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
switches::kPpapiFlashVersion);
plugins->push_back(
CreatePepperFlashInfo(base::FilePath(flash_path), flash_version));
}
bool GetSystemPepperFlash(content::PepperPluginInfo* plugin) {
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
if (!command_line->HasSwitch(switches::kEnableSystemFlash))
return false;
// Do not try and find System Pepper Flash if there is a specific path on
// the commmand-line.
if (command_line->HasSwitch(switches::kPpapiFlashPath))
return false;
base::FilePath flash_filename;
if (!base::PathService::Get(chrome::FILE_PEPPER_FLASH_SYSTEM_PLUGIN,
&flash_filename)) {
return false;
}
base::FilePath manifest_path(
flash_filename.DirName().AppendASCII("manifest.json"));
std::string manifest_data;
if (!base::ReadFileToString(manifest_path, &manifest_data))
return false;
std::unique_ptr<base::Value> manifest_value(
base::JSONReader::Read(manifest_data, base::JSON_ALLOW_TRAILING_COMMAS));
if (!manifest_value.get())
return false;
base::DictionaryValue* manifest = NULL;
if (!manifest_value->GetAsDictionary(&manifest))
return false;
base::Version version;
if (!CheckPepperFlashManifest(*manifest, &version))
return false;
*plugin = CreatePepperFlashInfo(flash_filename, version.GetString());
return true;
}
} // namespace
const char CefContentClient::kPDFPluginPath[] = "internal-pdf-viewer";
CefContentClient::CefContentClient(CefRefPtr<CefApp> application)
: application_(application),
pack_loading_disabled_(false),
allow_pack_file_load_(false),
scheme_info_list_locked_(false) {
DCHECK(!g_content_client);
g_content_client = this;
}
CefContentClient::~CefContentClient() {
g_content_client = NULL;
}
// static
CefContentClient* CefContentClient::Get() {
return g_content_client;
}
void CefContentClient::AddPepperPlugins(
std::vector<content::PepperPluginInfo>* plugins) {
ComputeBuiltInPlugins(plugins);
AddPepperFlashFromCommandLine(plugins);
content::PepperPluginInfo plugin;
if (GetSystemPepperFlash(&plugin))
plugins->push_back(plugin);
}
void CefContentClient::AddContentDecryptionModules(
std::vector<content::CdmInfo>* cdms,
std::vector<media::CdmHostFilePath>* cdm_host_file_paths) {
#if defined(OS_LINUX)
#if BUILDFLAG(ENABLE_WIDEVINE) && BUILDFLAG(ENABLE_LIBRARY_CDMS)
CefWidevineLoader::AddContentDecryptionModules(cdms, cdm_host_file_paths);
#endif
#endif
}
void CefContentClient::AddAdditionalSchemes(Schemes* schemes) {
DCHECK(!scheme_info_list_locked_);
if (application_.get()) {
CefSchemeRegistrarImpl schemeRegistrar;
application_->OnRegisterCustomSchemes(&schemeRegistrar);
schemeRegistrar.GetSchemes(schemes);
}
scheme::AddInternalSchemes(schemes);
scheme_info_list_locked_ = true;
}
base::string16 CefContentClient::GetLocalizedString(int message_id) const {
base::string16 value =
ui::ResourceBundle::GetSharedInstance().GetLocalizedString(message_id);
if (value.empty())
LOG(ERROR) << "No localized string available for id " << message_id;
return value;
}
base::StringPiece CefContentClient::GetDataResource(
int resource_id,
ui::ScaleFactor scale_factor) const {
base::StringPiece value =
ui::ResourceBundle::GetSharedInstance().GetRawDataResourceForScale(
resource_id, scale_factor);
if (value.empty())
LOG(ERROR) << "No data resource available for id " << resource_id;
return value;
}
base::RefCountedMemory* CefContentClient::GetDataResourceBytes(
int resource_id) const {
base::RefCountedMemory* value =
ui::ResourceBundle::GetSharedInstance().LoadDataResourceBytes(
resource_id);
if (!value)
LOG(ERROR) << "No data resource bytes available for id " << resource_id;
return value;
}
gfx::Image& CefContentClient::GetNativeImageNamed(int resource_id) const {
gfx::Image& value =
ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(resource_id);
if (value.IsEmpty())
LOG(ERROR) << "No native image available for id " << resource_id;
return value;
}
void CefContentClient::AddCustomScheme(const SchemeInfo& scheme_info) {
DCHECK(!scheme_info_list_locked_);
scheme_info_list_.push_back(scheme_info);
if (CefContentBrowserClient::Get()) {
CefContentBrowserClient::Get()->RegisterCustomScheme(
scheme_info.scheme_name);
}
}
const CefContentClient::SchemeInfoList* CefContentClient::GetCustomSchemes() {
DCHECK(scheme_info_list_locked_);
return &scheme_info_list_;
}
bool CefContentClient::HasCustomScheme(const std::string& scheme_name) {
DCHECK(scheme_info_list_locked_);
if (scheme_info_list_.empty())
return false;
SchemeInfoList::const_iterator it = scheme_info_list_.begin();
for (; it != scheme_info_list_.end(); ++it) {
if (it->scheme_name == scheme_name)
return true;
}
return false;
}
// static
void CefContentClient::SetPDFEntryFunctions(
content::PepperPluginInfo::GetInterfaceFunc get_interface,
content::PepperPluginInfo::PPP_InitializeModuleFunc initialize_module,
content::PepperPluginInfo::PPP_ShutdownModuleFunc shutdown_module) {
g_pdf_get_interface = get_interface;
g_pdf_initialize_module = initialize_module;
g_pdf_shutdown_module = shutdown_module;
}
base::FilePath CefContentClient::GetPathForResourcePack(
const base::FilePath& pack_path,
ui::ScaleFactor scale_factor) {
// Only allow the cef pack file to load.
if (!pack_loading_disabled_ && allow_pack_file_load_)
return pack_path;
return base::FilePath();
}
base::FilePath CefContentClient::GetPathForLocalePack(
const base::FilePath& pack_path,
const std::string& locale) {
if (!pack_loading_disabled_)
return pack_path;
return base::FilePath();
}
gfx::Image CefContentClient::GetImageNamed(int resource_id) {
return gfx::Image();
}
gfx::Image CefContentClient::GetNativeImageNamed(int resource_id) {
return gfx::Image();
}
base::RefCountedStaticMemory* CefContentClient::LoadDataResourceBytes(
int resource_id,
ui::ScaleFactor scale_factor) {
return NULL;
}
bool CefContentClient::GetRawDataResource(int resource_id,
ui::ScaleFactor scale_factor,
base::StringPiece* value) {
if (application_.get()) {
CefRefPtr<CefResourceBundleHandler> handler =
application_->GetResourceBundleHandler();
if (handler.get()) {
void* data = NULL;
size_t data_size = 0;
if (scale_factor != ui::SCALE_FACTOR_NONE) {
if (handler->GetDataResourceForScale(
resource_id, static_cast<cef_scale_factor_t>(scale_factor),
data, data_size)) {
*value = base::StringPiece(static_cast<char*>(data), data_size);
}
} else if (handler->GetDataResource(resource_id, data, data_size)) {
*value = base::StringPiece(static_cast<char*>(data), data_size);
}
}
}
return (pack_loading_disabled_ || !value->empty());
}
bool CefContentClient::GetLocalizedString(int message_id,
base::string16* value) {
if (application_.get()) {
CefRefPtr<CefResourceBundleHandler> handler =
application_->GetResourceBundleHandler();
if (handler.get()) {
CefString cef_str;
if (handler->GetLocalizedString(message_id, cef_str))
*value = cef_str;
}
}
return (pack_loading_disabled_ || !value->empty());
}