src/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 "chrome/common/extensions/chrome_utility_extensions_messages.h"
  13 #include "content/public/browser/browser_thread.h"
  14 #include "content/public/browser/utility_process_host.h"
  15 #include "net/base/load_flags.h"
  16 #include "net/url_request/url_fetcher.h"
  17 #include "net/url_request/url_request_context_getter.h"
  18 #include "net/url_request/url_request_status.h"
  19
  20 using content::BrowserThread;
  21 using content::UtilityProcessHost;
  22
  23 namespace {
  24
  25 const char kImageDecodeError[] = "Image decode failed";
  26
  27 }  // namespace
  28
  29 namespace extensions {
  30
  31 WebstoreInstallHelper::WebstoreInstallHelper(
  32     Delegate* delegate,
  33     const std::string& id,
  34     const std::string& manifest,
  35     const std::string& icon_data,
  36     const GURL& icon_url,
  37     net::URLRequestContextGetter* context_getter)
  38     : delegate_(delegate),
  39       id_(id),
  40       manifest_(manifest),
  41       icon_base64_data_(icon_data),
  42       icon_url_(icon_url),
  43       context_getter_(context_getter),
  44       icon_decode_complete_(false),
  45       manifest_parse_complete_(false),
  46       parse_error_(Delegate::UNKNOWN_ERROR) {}
  47
  48 WebstoreInstallHelper::~WebstoreInstallHelper() {}
  49
  50 void WebstoreInstallHelper::Start() {
  51   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  52   CHECK(icon_base64_data_.empty() || icon_url_.is_empty());
  53
  54   if (icon_base64_data_.empty() && icon_url_.is_empty())
  55     icon_decode_complete_ = true;
  56
  57   BrowserThread::PostTask(
  58       BrowserThread::IO,
  59       FROM_HERE,
  60       base::Bind(&WebstoreInstallHelper::StartWorkOnIOThread, this));
  61
  62   if (!icon_url_.is_empty()) {
  63     CHECK(context_getter_);
  64     url_fetcher_.reset(net::URLFetcher::Create(
  65         icon_url_, net::URLFetcher::GET, this));
  66     url_fetcher_->SetRequestContext(context_getter_);
  67     url_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SAVE_COOKIES |
  68                                net::LOAD_DO_NOT_SEND_COOKIES);
  69
  70     url_fetcher_->Start();
  71     // We'll get called back in OnURLFetchComplete.
  72   }
  73 }
  74
  75 void WebstoreInstallHelper::StartWorkOnIOThread() {
  76   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  77   utility_host_ = UtilityProcessHost::Create(
  78       this, base::MessageLoopProxy::current().get())->AsWeakPtr();
  79   utility_host_->StartBatchMode();
  80
  81   if (!icon_base64_data_.empty())
  82     utility_host_->Send(
  83         new ChromeUtilityMsg_DecodeImageBase64(icon_base64_data_));
  84
  85   utility_host_->Send(new ChromeUtilityMsg_ParseJSON(manifest_));
  86 }
  87
  88 void WebstoreInstallHelper::OnURLFetchComplete(
  89     const net::URLFetcher* source) {
  90   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  91   CHECK(source == url_fetcher_.get());
  92   int response_code =
  93       source->GetStatus().is_success() ? source->GetResponseCode() : 0;
  94   if (!source->GetStatus().is_success() ||
  95       response_code / 100 == 4 || response_code / 100 == 5) {
  96     BrowserThread::PostTask(
  97         BrowserThread::IO,
  98         FROM_HERE,
  99         base::Bind(&WebstoreInstallHelper::OnDecodeImageFailed, this));
 100   } else {
 101     std::string response_data;
 102     source->GetResponseAsString(&response_data);
 103     fetched_icon_data_.insert(fetched_icon_data_.begin(),
 104                               response_data.begin(),
 105                               response_data.end());
 106     BrowserThread::PostTask(
 107         BrowserThread::IO,
 108         FROM_HERE,
 109         base::Bind(&WebstoreInstallHelper::StartFetchedImageDecode, this));
 110   }
 111   url_fetcher_.reset();
 112 }
 113
 114 void WebstoreInstallHelper::StartFetchedImageDecode() {
 115   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 116   CHECK(utility_host_.get());
 117   utility_host_->Send(new ChromeUtilityMsg_DecodeImage(fetched_icon_data_));
 118 }
 119
 120
 121 bool WebstoreInstallHelper::OnMessageReceived(const IPC::Message& message) {
 122   bool handled = true;
 123   IPC_BEGIN_MESSAGE_MAP(WebstoreInstallHelper, message)
 124     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Succeeded,
 125                         OnDecodeImageSucceeded)
 126     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_DecodeImage_Failed,
 127                         OnDecodeImageFailed)
 128     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Succeeded,
 129                         OnJSONParseSucceeded)
 130     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_ParseJSON_Failed,
 131                         OnJSONParseFailed)
 132     IPC_MESSAGE_UNHANDLED(handled = false)
 133   IPC_END_MESSAGE_MAP()
 134   return handled;
 135 }
 136
 137
 138 void WebstoreInstallHelper::OnDecodeImageSucceeded(
 139     const SkBitmap& decoded_image) {
 140   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 141   icon_ = decoded_image;
 142   icon_decode_complete_ = true;
 143   ReportResultsIfComplete();
 144 }
 145
 146 void WebstoreInstallHelper::OnDecodeImageFailed() {
 147   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 148   icon_decode_complete_ = true;
 149   error_ = kImageDecodeError;
 150   parse_error_ = Delegate::ICON_ERROR;
 151   ReportResultsIfComplete();
 152 }
 153
 154 void WebstoreInstallHelper::OnJSONParseSucceeded(
 155     const base::ListValue& wrapper) {
 156   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 157   manifest_parse_complete_ = true;
 158   const base::Value* value = NULL;
 159   CHECK(wrapper.Get(0, &value));
 160   if (value->IsType(base::Value::TYPE_DICTIONARY)) {
 161     parsed_manifest_.reset(
 162         static_cast<const base::DictionaryValue*>(value)->DeepCopy());
 163   } else {
 164     parse_error_ = Delegate::MANIFEST_ERROR;
 165   }
 166   ReportResultsIfComplete();
 167 }
 168
 169 void WebstoreInstallHelper::OnJSONParseFailed(
 170     const std::string& error_message) {
 171   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 172   manifest_parse_complete_ = true;
 173   error_ = error_message;
 174   parse_error_ = Delegate::MANIFEST_ERROR;
 175   ReportResultsIfComplete();
 176 }
 177
 178 void WebstoreInstallHelper::ReportResultsIfComplete() {
 179   CHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 180
 181   if (!icon_decode_complete_ || !manifest_parse_complete_)
 182     return;
 183
 184   // The utility_host_ will take care of deleting itself after this call.
 185   if (utility_host_.get()) {
 186     utility_host_->EndBatchMode();
 187     utility_host_.reset();
 188   }
 189
 190   BrowserThread::PostTask(
 191       BrowserThread::UI,
 192       FROM_HERE,
 193       base::Bind(&WebstoreInstallHelper::ReportResultFromUIThread, this));
 194 }
 195
 196 void WebstoreInstallHelper::ReportResultFromUIThread() {
 197   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 198   if (error_.empty() && parsed_manifest_)
 199     delegate_->OnWebstoreParseSuccess(id_, icon_, parsed_manifest_.release());
 200   else
 201     delegate_->OnWebstoreParseFailure(id_, parse_error_, error_);
 202 }
 203
 204 }  // namespace extensions