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// Copyright (c) 2012 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_list.h"
#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/file_util.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/pepper_plugin_info.h"
#include "ppapi/shared_impl/ppapi_permissions.h"
namespace content {
namespace {
// The maximum number of plugins allowed to be registered from command line.
const size_t kMaxPluginsToRegisterFromCommandLine = 64;
// Appends any plugins from the command line to the given vector.
void ComputePluginsFromCommandLine(std::vector<PepperPluginInfo>* plugins) {
// On Linux, once we're sandboxed, we can't know if a plugin is available or
// not. But (on Linux) this function is always called once before we're
// sandboxed. So when this function is called for the first time we set a
// flag if the plugin file is available. Then we can skip the check on file
// existence in subsequent calls if the flag is set.
// NOTE: In theory we could have unlimited number of plugins registered in
// command line. But in practice, 64 plugins should be more than enough.
static uint64 skip_file_check_flags = 0;
COMPILE_ASSERT(
kMaxPluginsToRegisterFromCommandLine <= sizeof(skip_file_check_flags) * 8,
max_plugins_to_register_from_command_line_exceeds_limit);
bool out_of_process = true;
if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kPpapiInProcess))
out_of_process = false;
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);
size_t plugins_to_register = modules.size();
if (plugins_to_register > kMaxPluginsToRegisterFromCommandLine) {
VLOG(1) << plugins_to_register << " pepper plugins registered from"
<< " command line which exceeds the limit (maximum "
<< kMaxPluginsToRegisterFromCommandLine << " plugins allowed)";
plugins_to_register = kMaxPluginsToRegisterFromCommandLine;
}
for (size_t i = 0; i < plugins_to_register; ++i) {
std::vector<std::string> parts;
base::SplitString(modules[i], ';', &parts);
if (parts.size() < 2) {
VLOG(1) << "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 = base::FilePath(ASCIIToUTF16(name_parts[0]));
#else
plugin.path = base::FilePath(name_parts[0]);
#endif
uint64 index_mask = 1ULL << i;
if (!(skip_file_check_flags & index_mask)) {
if (base::PathExists(plugin.path)) {
skip_file_check_flags |= index_mask;
} else {
VLOG(1) << "Plugin doesn't exist: " << plugin.path.MaybeAsASCII();
continue;
}
}
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) {
WebPluginMimeType mime_type(parts[j],
std::string(),
plugin.description);
plugin.mime_types.push_back(mime_type);
}
// If the plugin name is empty, use the filename.
if (plugin.name.empty())
plugin.name = UTF16ToUTF8(plugin.path.BaseName().LossyDisplayName());
// Command-line plugins get full permissions.
plugin.permissions = ppapi::PERMISSION_ALL_BITS;
plugins->push_back(plugin);
}
}
} // namespace
bool MakePepperPluginInfo(const WebPluginInfo& webplugin_info,
PepperPluginInfo* pepper_info) {
if (!webplugin_info.is_pepper_plugin())
return false;
pepper_info->is_out_of_process =
webplugin_info.type == WebPluginInfo::PLUGIN_TYPE_PEPPER_OUT_OF_PROCESS ||
webplugin_info.type == WebPluginInfo::PLUGIN_TYPE_PEPPER_UNSANDBOXED;
pepper_info->is_sandboxed = webplugin_info.type !=
WebPluginInfo::PLUGIN_TYPE_PEPPER_UNSANDBOXED;
pepper_info->path = base::FilePath(webplugin_info.path);
pepper_info->name = UTF16ToASCII(webplugin_info.name);
pepper_info->description = UTF16ToASCII(webplugin_info.desc);
pepper_info->version = UTF16ToASCII(webplugin_info.version);
pepper_info->mime_types = webplugin_info.mime_types;
pepper_info->permissions = webplugin_info.pepper_permissions;
return true;
}
void ComputePepperPluginList(std::vector<PepperPluginInfo>* plugins) {
GetContentClient()->AddPepperPlugins(plugins);
ComputePluginsFromCommandLine(plugins);
}
} // namespace content
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