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