// 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/command_line.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 {

// Appends any plugins from the command line to the given vector.
void ComputePluginsFromCommandLine(std::vector<PepperPluginInfo>* plugins) {
  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);
  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 = base::FilePath(ASCIIToUTF16(name_parts[0]));
#else
    plugin.path = base::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) {
      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