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