chrome/browser/extensions/webstore_install_helper.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/extensions/webstore_install_helper.h"
   6
   7 #include <string>
   8
   9 #include "base/bind.h"
  10 #include "base/values.h"
  11 #include "chrome/common/chrome_utility_messages.h"
  12 #include "content/public/browser/browser_thread.h"
  13 #include "content/public/browser/utility_process_host.h"
  14 #include "net/base/load_flags.h"
  15 #include "net/url_request/url_fetcher.h"
  16 #include "net/url_request/url_request_context_getter.h"
  17 #include "net/url_request/url_request_status.h"
  18
  19 using content::BrowserThread;
  20 using content::UtilityProcessHost;
  21
  22 namespace {
  23
  24 const char kImageDecodeError[] = "Image decode failed";
  25
  26 }  // namespace
  27
  28 namespace extensions {
  29
  30 WebstoreInstallHelper::WebstoreInstallHelper(
  31     Delegate* delegate,
  32     const std::string& id,
  33     const std::string& manifest,
  34     const std::string& icon_data,
  35     const GURL& icon_url,
  36     net::URLRequestContextGetter* context_getter)
  37     : delegate_(delegate),
  38       id_(id),
  39       manifest_(manifest),
  40       icon_base64_data_(icon_data),
  41       icon_url_(icon_url),
  42       context_getter_(context_getter),
  43       icon_decode_complete_(false),
  44       manifest_parse_complete_(false),
  45       parse_error_(Delegate::UNKNOWN_ERROR) {}
  46
  47 WebstoreInstallHelper::~WebstoreInstallHelper() {}
  48
  49 void WebstoreInstallHelper::Start() {
  50   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  51   CHECK(icon_base64_data_.empty() || icon_url_.is_empty());
  52
  53   if (icon_base64_data_.empty() && icon_url_.is_empty())
  54     icon_decode_complete_ = true;
  55
  56   BrowserThread::PostTask(
  57       BrowserThread::IO,
  58       FROM_HERE,
  59       base::Bind(&WebstoreInstallHelper::StartWorkOnIOThread, this));
  60
  61   if (!icon_url_.is_empty()) {
  62     CHECK(context_getter_);
  63     url_fetcher_.reset(net::URLFetcher::Create(
  64         icon_url_, net::URLFetcher::GET, this));
  65     url_fetcher_->SetRequestContext(context_getter_);
  66     url_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SAVE_COOKIES |
  67                                net::LOAD_DO_NOT_SEND_COOKIES);
  68
  69     url_fetcher_->Start();
  70     // We'll get called back in OnURLFetchComplete.
  71   }
  72 }
  73
  74 void WebstoreInstallHelper::StartWorkOnIOThread() {
  75   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  76   utility_host_ = UtilityProcessHost::Create(
  77       this, base::MessageLoopProxy::current().get())->AsWeakPtr();
  78   utility_host_->StartBatchMode();
  79
  80   if (!icon_base64_data_.empty())
  81     utility_host_->Send(
  82         new ChromeUtilityMsg_DecodeImageBase64(icon_base64_data_));
  83
  84   utility_host_->Send(new ChromeUtilityMsg_ParseJSON(manifest_));
  85 }
  86
  87 void WebstoreInstallHelper::OnURLFetchComplete(
  88     const net::URLFetcher* source) {
  89   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  90   CHECK(source == url_fetcher_.get());
  91   if (source->GetStatus().status() != net::URLRequestStatus::SUCCESS ||
  92       source->GetResponseCode() != 200) {
  93     BrowserThread::PostTask(
  94         BrowserThread::IO,
  95         FROM_HERE,
  96         base::Bind(&WebstoreInstallHelper::OnDecodeImageFailed, this));
  97   } else {
  98     std::string response_data;
  99     source->GetResponseAsString(&response_data);
 100     fetched_icon_data_.insert(fetched_icon_data_.begin(),
 101                               response_data.begin(),
 102                               response_data.end());
 103     BrowserThread::PostTask(
 104         BrowserThread::IO,
 105         FROM_HERE,
 106         base::Bind(&WebstoreInstallHelper::StartFetchedImageDecode, this));
 107   }
 108   url_fetcher_.reset();
 109 }
 110
 111 void WebstoreInstallHelper::StartFetchedImageDecode() {
 112   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 113   CHECK(utility_host_.get());
 114   utility_host_->Send(new ChromeUtilityMsg_DecodeImage(fetched_icon_data_));
 115 }
 116
 117
 118 bool WebstoreInstallHelper::OnMessageReceived(const IPC::Message& message) {
 119   bool handled = true;
 120   IPC_BEGIN_MESSAGE_MAP(WebstoreInstallHelper, message)
 121     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Succeeded,
 122                         OnDecodeImageSucceeded)
 123     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Failed,
 124                         OnDecodeImageFailed)
 125     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Succeeded,
 126                         OnJSONParseSucceeded)
 127     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Failed,
 128                         OnJSONParseFailed)
 129     IPC_MESSAGE_UNHANDLED(handled = false)
 130   IPC_END_MESSAGE_MAP()
 131   return handled;
 132 }
 133
 134
 135 void WebstoreInstallHelper::OnDecodeImageSucceeded(
 136     const SkBitmap& decoded_image) {
 137   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 138   icon_ = decoded_image;
 139   icon_decode_complete_ = true;
 140   ReportResultsIfComplete();
 141 }
 142
 143 void WebstoreInstallHelper::OnDecodeImageFailed() {
 144   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 145   icon_decode_complete_ = true;
 146   error_ = kImageDecodeError;
 147   parse_error_ = Delegate::ICON_ERROR;
 148   ReportResultsIfComplete();
 149 }
 150
 151 void WebstoreInstallHelper::OnJSONParseSucceeded(
 152     const base::ListValue& wrapper) {
 153   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 154   manifest_parse_complete_ = true;
 155   const base::Value* value = NULL;
 156   CHECK(wrapper.Get(0, &value));
 157   if (value->IsType(base::Value::TYPE_DICTIONARY)) {
 158     parsed_manifest_.reset(
 159         static_cast<const base::DictionaryValue*>(value)->DeepCopy());
 160   } else {
 161     parse_error_ = Delegate::MANIFEST_ERROR;
 162   }
 163   ReportResultsIfComplete();
 164 }
 165
 166 void WebstoreInstallHelper::OnJSONParseFailed(
 167     const std::string& error_message) {
 168   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 169   manifest_parse_complete_ = true;
 170   error_ = error_message;
 171   parse_error_ = Delegate::MANIFEST_ERROR;
 172   ReportResultsIfComplete();
 173 }
 174
 175 void WebstoreInstallHelper::ReportResultsIfComplete() {
 176   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 177
 178   if (!icon_decode_complete_ || !manifest_parse_complete_)
 179     return;
 180
 181   // The utility_host_ will take care of deleting itself after this call.
 182   if (utility_host_.get()) {
 183     utility_host_->EndBatchMode();
 184     utility_host_.reset();
 185   }
 186
 187   BrowserThread::PostTask(
 188       BrowserThread::UI,
 189       FROM_HERE,
 190       base::Bind(&WebstoreInstallHelper::ReportResultFromUIThread, this));
 191 }
 192
 193 void WebstoreInstallHelper::ReportResultFromUIThread() {
 194   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 195   if (error_.empty() && parsed_manifest_)
 196     delegate_->OnWebstoreParseSuccess(id_, icon_, parsed_manifest_.release());
 197   else
 198     delegate_->OnWebstoreParseFailure(id_, parse_error_, error_);
 199 }
 200
 201 }  // namespace extensions