Revert 64845 - Add convert_web_app.*, a utility to convert web apps declared...

chrome/browser/extensions/convert_web_app.cc

-// Copyright (c) 2010 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/browser/extensions/convert_web_app.h"
-
-#include <string>
-#include <vector>
-
-#include "base/base64.h"
-#include "base/file_path.h"
-#include "base/file_util.h"
-#include "base/path_service.h"
-#include "base/scoped_temp_dir.h"
-#include "base/sha2.h"
-#include "base/stringprintf.h"
-#include "base/time.h"
-#include "base/utf_string_conversions.h"
-#include "chrome/common/chrome_paths.h"
-#include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/extension_constants.h"
-#include "chrome/common/json_value_serializer.h"
-#include "gfx/codec/png_codec.h"
-#include "googleurl/src/gurl.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "webkit/glue/dom_operations.h"
-
-namespace keys = extension_manifest_keys;
-
-namespace {
-
-const char kIconsDirName[] = "_icons";
-
-// Create the public key for the converted web app.
-//
-// Web apps are not signed, but the public key for an extension doubles as
-// its unique identity, and we need one of those. A web app's unique identity
-// is its manifest URL, so we hash that to create a public key. There will be
-// no corresponding private key, which means that these extensions cannot be
-// auto-updated using ExtensionUpdater. But Chrome does notice updates to the
-// manifest and regenerates these extensions.
-std::string GenerateKey(const GURL& manifest_url) {
-  char raw[base::SHA256_LENGTH] = {0};
-  std::string key;
-  base::SHA256HashString(manifest_url.spec().c_str(),
-                         raw,
-                         base::SHA256_LENGTH);
-  base::Base64Encode(std::string(raw, base::SHA256_LENGTH), &key);
-  return key;
-}
-
-}
-
-
-// Generates a version for the converted app using the current date. This isn't
-// really needed, but it seems like useful information.
-std::string ConvertTimeToExtensionVersion(const base::Time& create_time) {
-  base::Time::Exploded create_time_exploded;
-  create_time.LocalExplode(&create_time_exploded);
-
-  uint32 timestamp = static_cast<uint>(create_time.ToDoubleT());
-  uint16 timestamp_lower = static_cast<uint16>(timestamp);
-  uint16 timestamp_upper = static_cast<uint16>(timestamp >> 16);
-
-  return base::StringPrintf("%i.%i%.2i.%i.%i",
-                            create_time_exploded.year,
-                            create_time_exploded.month,
-                            create_time_exploded.day_of_month,
-                            timestamp_upper,
-                            timestamp_lower);
-}
-
-scoped_refptr<Extension> ConvertWebAppToExtension(
-    const webkit_glue::WebApplicationInfo& web_app,
-    const base::Time& create_time) {
-  FilePath user_data_temp_dir;
-  CHECK(PathService::Get(chrome::DIR_USER_DATA_TEMP, &user_data_temp_dir));
-
-  ScopedTempDir temp_dir;
-  if (!temp_dir.CreateUniqueTempDirUnderPath(user_data_temp_dir)) {
-    LOG(ERROR) << "Could not create temporary directory.";
-    return NULL;
-  }
-
-  // Create the manifest
-  scoped_ptr<DictionaryValue> root(new DictionaryValue);
-  root->SetString(keys::kPublicKey, GenerateKey(web_app.manifest_url));
-  root->SetString(keys::kName, UTF16ToUTF8(web_app.title));
-  root->SetString(keys::kVersion, ConvertTimeToExtensionVersion(create_time));
-  root->SetString(keys::kDescription, UTF16ToUTF8(web_app.description));
-  root->SetString(keys::kLaunchWebURL, web_app.app_url.spec());
-
-  // Add the icons.
-  DictionaryValue* icons = new DictionaryValue();
-  root->Set(keys::kIcons, icons);
-  for (size_t i = 0; i < web_app.icons.size(); ++i) {
-    std::string size = StringPrintf("%i", web_app.icons[i].width);
-    std::string icon_path = StringPrintf("%s/%s.png", kIconsDirName,
-                                         size.c_str());
-    icons->SetString(size, icon_path);
-  }
-
-  // Add the permissions.
-  ListValue* permissions = new ListValue();
-  root->Set(keys::kPermissions, permissions);
-  for (size_t i = 0; i < web_app.permissions.size(); ++i) {
-    permissions->Append(Value::CreateStringValue(web_app.permissions[i]));
-  }
-
-  // Add the URLs.
-  ListValue* urls = new ListValue();
-  root->Set(keys::kWebURLs, urls);
-  for (size_t i = 0; i < web_app.urls.size(); ++i) {
-    urls->Append(Value::CreateStringValue(web_app.urls[i].spec()));
-  }
-
-  // Write the manifest.
-  FilePath manifest_path = temp_dir.path().Append(
-      Extension::kManifestFilename);
-  JSONFileValueSerializer serializer(manifest_path);
-  if (!serializer.Serialize(*root)) {
-    LOG(ERROR) << "Could not serialize manifest.";
-    return NULL;
-  }
-
-  // Write the icon files.
-  FilePath icons_dir = temp_dir.path().AppendASCII(kIconsDirName);
-  if (!file_util::CreateDirectory(icons_dir)) {
-    LOG(ERROR) << "Could not create icons directory.";
-    return NULL;
-  }
-  for (size_t i = 0; i < web_app.icons.size(); ++i) {
-    FilePath icon_file = icons_dir.AppendASCII(
-        StringPrintf("%i.png", web_app.icons[i].width));
-    std::vector<unsigned char> image_data;
-    if (!gfx::PNGCodec::EncodeBGRASkBitmap(web_app.icons[i].data,
-                                           false,
-                                           &image_data)) {
-      LOG(ERROR) << "Could not create icon file.";
-      return NULL;
-    }
-
-    const char* image_data_ptr = reinterpret_cast<const char*>(&image_data[0]);
-    if (!file_util::WriteFile(icon_file, image_data_ptr, image_data.size())) {
-      LOG(ERROR) << "Could not write icon file.";
-      return NULL;
-    }
-  }
-
-  // Finally, create the extension object to represent the unpacked directory.
-  std::string error;
-  scoped_refptr<Extension> extension = Extension::Create(
-      temp_dir.path(), Extension::INTERNAL, *root, false, &error);
-  if (!extension) {
-    LOG(ERROR) << error;
-    return NULL;
-  }
-
-  temp_dir.Take();  // The caller takes ownership of the directory.
-  return extension;
-}