content/browser/webui/web_ui_data_source_impl.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 "content/browser/webui/web_ui_data_source_impl.h"
   6
   7 #include <string>
   8
   9 #include "base/bind.h"
  10 #include "base/memory/ref_counted_memory.h"
  11 #include "base/strings/string_util.h"
  12 #include "content/grit/content_resources.h"
  13 #include "content/public/common/content_client.h"
  14 #include "mojo/public/js/bindings/constants.h"
  15 #include "ui/base/webui/jstemplate_builder.h"
  16 #include "ui/base/webui/web_ui_util.h"
  17
  18 namespace content {
  19
  20 // static
  21 WebUIDataSource* WebUIDataSource::Create(const std::string& source_name) {
  22   return new WebUIDataSourceImpl(source_name);
  23 }
  24
  25 // static
  26 WebUIDataSource* WebUIDataSource::AddMojoDataSource(
  27     BrowserContext* browser_context) {
  28   WebUIDataSource* mojo_source = Create("mojo");
  29
  30   static const struct {
  31     const char* path;
  32     int id;
  33   } resources[] = {
  34     { mojo::kBufferModuleName, IDR_MOJO_BUFFER_JS },
  35     { mojo::kCodecModuleName, IDR_MOJO_CODEC_JS },
  36     { mojo::kConnectionModuleName, IDR_MOJO_CONNECTION_JS },
  37     { mojo::kConnectorModuleName, IDR_MOJO_CONNECTOR_JS },
  38     { mojo::kRouterModuleName, IDR_MOJO_ROUTER_JS },
  39     { mojo::kUnicodeModuleName, IDR_MOJO_UNICODE_JS },
  40     { mojo::kValidatorModuleName, IDR_MOJO_VALIDATOR_JS },
  41   };
  42   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(resources); ++i)
  43     mojo_source->AddResourcePath(resources[i].path, resources[i].id);
  44
  45   URLDataManager::AddWebUIDataSource(browser_context, mojo_source);
  46   return mojo_source;
  47 }
  48
  49 // static
  50 void WebUIDataSource::Add(BrowserContext* browser_context,
  51                           WebUIDataSource* source) {
  52   URLDataManager::AddWebUIDataSource(browser_context, source);
  53 }
  54
  55 // Internal class to hide the fact that WebUIDataSourceImpl implements
  56 // URLDataSource.
  57 class WebUIDataSourceImpl::InternalDataSource : public URLDataSource {
  58  public:
  59   InternalDataSource(WebUIDataSourceImpl* parent) : parent_(parent) {
  60   }
  61
  62   virtual ~InternalDataSource() {
  63   }
  64
  65   // URLDataSource implementation.
  66   virtual std::string GetSource() const OVERRIDE {
  67     return parent_->GetSource();
  68   }
  69   virtual std::string GetMimeType(const std::string& path) const OVERRIDE {
  70     return parent_->GetMimeType(path);
  71   }
  72   virtual void StartDataRequest(
  73       const std::string& path,
  74       int render_process_id,
  75       int render_frame_id,
  76       const URLDataSource::GotDataCallback& callback) OVERRIDE {
  77     return parent_->StartDataRequest(path, render_process_id, render_frame_id,
  78                                      callback);
  79   }
  80   virtual bool ShouldReplaceExistingSource() const OVERRIDE {
  81     return parent_->replace_existing_source_;
  82   }
  83   virtual bool AllowCaching() const OVERRIDE {
  84     return false;
  85   }
  86   virtual bool ShouldAddContentSecurityPolicy() const OVERRIDE {
  87     return parent_->add_csp_;
  88   }
  89   virtual std::string GetContentSecurityPolicyObjectSrc() const OVERRIDE {
  90     if (parent_->object_src_set_)
  91       return parent_->object_src_;
  92     return URLDataSource::GetContentSecurityPolicyObjectSrc();
  93   }
  94   virtual std::string GetContentSecurityPolicyFrameSrc() const OVERRIDE {
  95     if (parent_->frame_src_set_)
  96       return parent_->frame_src_;
  97     return URLDataSource::GetContentSecurityPolicyFrameSrc();
  98   }
  99   virtual bool ShouldDenyXFrameOptions() const OVERRIDE {
 100     return parent_->deny_xframe_options_;
 101   }
 102
 103  private:
 104   WebUIDataSourceImpl* parent_;
 105 };
 106
 107 WebUIDataSourceImpl::WebUIDataSourceImpl(const std::string& source_name)
 108     : URLDataSourceImpl(
 109           source_name,
 110           new InternalDataSource(this)),
 111       source_name_(source_name),
 112       default_resource_(-1),
 113       json_js_format_v2_(false),
 114       add_csp_(true),
 115       object_src_set_(false),
 116       frame_src_set_(false),
 117       deny_xframe_options_(true),
 118       disable_set_font_strings_(false),
 119       replace_existing_source_(true) {
 120 }
 121
 122 WebUIDataSourceImpl::~WebUIDataSourceImpl() {
 123 }
 124
 125 void WebUIDataSourceImpl::AddString(const std::string& name,
 126                                     const base::string16& value) {
 127   localized_strings_.SetString(name, value);
 128 }
 129
 130 void WebUIDataSourceImpl::AddString(const std::string& name,
 131                                     const std::string& value) {
 132   localized_strings_.SetString(name, value);
 133 }
 134
 135 void WebUIDataSourceImpl::AddLocalizedString(const std::string& name,
 136                                              int ids) {
 137   localized_strings_.SetString(
 138       name, GetContentClient()->GetLocalizedString(ids));
 139 }
 140
 141 void WebUIDataSourceImpl::AddLocalizedStrings(
 142     const base::DictionaryValue& localized_strings) {
 143   localized_strings_.MergeDictionary(&localized_strings);
 144 }
 145
 146 void WebUIDataSourceImpl::AddBoolean(const std::string& name, bool value) {
 147   localized_strings_.SetBoolean(name, value);
 148 }
 149
 150 void WebUIDataSourceImpl::SetJsonPath(const std::string& path) {
 151   json_path_ = path;
 152 }
 153
 154 void WebUIDataSourceImpl::SetUseJsonJSFormatV2() {
 155   json_js_format_v2_ = true;
 156 }
 157
 158 void WebUIDataSourceImpl::AddResourcePath(const std::string &path,
 159                                           int resource_id) {
 160   path_to_idr_map_[path] = resource_id;
 161 }
 162
 163 void WebUIDataSourceImpl::SetDefaultResource(int resource_id) {
 164   default_resource_ = resource_id;
 165 }
 166
 167 void WebUIDataSourceImpl::SetRequestFilter(
 168     const WebUIDataSource::HandleRequestCallback& callback) {
 169   filter_callback_ = callback;
 170 }
 171
 172 void WebUIDataSourceImpl::DisableReplaceExistingSource() {
 173   replace_existing_source_ = false;
 174 }
 175
 176 void WebUIDataSourceImpl::DisableContentSecurityPolicy() {
 177   add_csp_ = false;
 178 }
 179
 180 void WebUIDataSourceImpl::OverrideContentSecurityPolicyObjectSrc(
 181     const std::string& data) {
 182   object_src_set_ = true;
 183   object_src_ = data;
 184 }
 185
 186 void WebUIDataSourceImpl::OverrideContentSecurityPolicyFrameSrc(
 187     const std::string& data) {
 188   frame_src_set_ = true;
 189   frame_src_ = data;
 190 }
 191
 192 void WebUIDataSourceImpl::DisableDenyXFrameOptions() {
 193   deny_xframe_options_ = false;
 194 }
 195
 196 std::string WebUIDataSourceImpl::GetSource() const {
 197   return source_name_;
 198 }
 199
 200 std::string WebUIDataSourceImpl::GetMimeType(const std::string& path) const {
 201   if (EndsWith(path, ".js", false))
 202     return "application/javascript";
 203
 204   if (EndsWith(path, ".json", false))
 205     return "application/json";
 206
 207   if (EndsWith(path, ".pdf", false))
 208     return "application/pdf";
 209
 210   if (EndsWith(path, ".svg", false))
 211     return "image/svg+xml";
 212
 213   return "text/html";
 214 }
 215
 216 void WebUIDataSourceImpl::StartDataRequest(
 217     const std::string& path,
 218     int render_process_id,
 219     int render_frame_id,
 220     const URLDataSource::GotDataCallback& callback) {
 221   if (!filter_callback_.is_null() &&
 222       filter_callback_.Run(path, callback)) {
 223     return;
 224   }
 225
 226   if (!json_path_.empty() && path == json_path_) {
 227     SendLocalizedStringsAsJSON(callback);
 228     return;
 229   }
 230
 231   int resource_id = default_resource_;
 232   std::map<std::string, int>::iterator result;
 233   result = path_to_idr_map_.find(path);
 234   if (result != path_to_idr_map_.end())
 235     resource_id = result->second;
 236   DCHECK_NE(resource_id, -1);
 237   SendFromResourceBundle(callback, resource_id);
 238 }
 239
 240 void WebUIDataSourceImpl::SendLocalizedStringsAsJSON(
 241     const URLDataSource::GotDataCallback& callback) {
 242   std::string template_data;
 243   if (!disable_set_font_strings_)
 244     webui::SetFontAndTextDirection(&localized_strings_);
 245
 246   scoped_ptr<webui::UseVersion2> version2;
 247   if (json_js_format_v2_)
 248     version2.reset(new webui::UseVersion2);
 249
 250   webui::AppendJsonJS(&localized_strings_, &template_data);
 251   callback.Run(base::RefCountedString::TakeString(&template_data));
 252 }
 253
 254 void WebUIDataSourceImpl::SendFromResourceBundle(
 255     const URLDataSource::GotDataCallback& callback, int idr) {
 256   scoped_refptr<base::RefCountedStaticMemory> response(
 257       GetContentClient()->GetDataResourceBytes(idr));
 258   callback.Run(response.get());
 259 }
 260
 261 }  // namespace content