content/ppapi_plugin/ppapi_blink_platform_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/ppapi_plugin/ppapi_blink_platform_impl.h"
   6
   7 #include <map>
   8
   9 #include "base/logging.h"
  10 #include "base/strings/string16.h"
  11 #include "base/threading/platform_thread.h"
  12 #include "build/build_config.h"
  13 #include "content/child/child_thread_impl.h"
  14 #include "content/common/child_process_messages.h"
  15 #include "ppapi/proxy/plugin_globals.h"
  16 #include "ppapi/shared_impl/proxy_lock.h"
  17 #include "third_party/WebKit/public/platform/WebString.h"
  18
  19 #if defined(OS_WIN)
  20 #include "third_party/WebKit/public/platform/win/WebSandboxSupport.h"
  21 #elif defined(OS_MACOSX)
  22 #include "third_party/WebKit/public/platform/mac/WebSandboxSupport.h"
  23 #elif defined(OS_ANDROID)
  24 #include "third_party/WebKit/public/platform/android/WebSandboxSupport.h"
  25 #elif defined(OS_POSIX)
  26 #include "content/common/child_process_sandbox_support_impl_linux.h"
  27 #include "third_party/WebKit/public/platform/linux/WebFallbackFont.h"
  28 #include "third_party/WebKit/public/platform/linux/WebSandboxSupport.h"
  29 #include "third_party/icu/source/common/unicode/utf16.h"
  30 #endif
  31
  32 using blink::WebSandboxSupport;
  33 using blink::WebString;
  34 using blink::WebUChar;
  35 using blink::WebUChar32;
  36
  37 typedef struct CGFont* CGFontRef;
  38
  39 namespace content {
  40
  41 class PpapiBlinkPlatformImpl::SandboxSupport : public WebSandboxSupport {
  42  public:
  43   virtual ~SandboxSupport() {}
  44
  45 #if defined(OS_WIN)
  46   virtual bool ensureFontLoaded(HFONT);
  47 #elif defined(OS_MACOSX)
  48   virtual bool loadFont(NSFont* srcFont, CGFontRef* out, uint32_t* fontID);
  49 #elif defined(OS_ANDROID)
  50   // Empty class.
  51 #elif defined(OS_POSIX)
  52   SandboxSupport();
  53   virtual void getFallbackFontForCharacter(
  54       WebUChar32 character,
  55       const char* preferred_locale,
  56       blink::WebFallbackFont* fallbackFont);
  57   virtual void getRenderStyleForStrike(const char* family,
  58                                        int sizeAndStyle,
  59                                        blink::WebFontRenderStyle* out);
  60
  61  private:
  62   // WebKit likes to ask us for the correct font family to use for a set of
  63   // unicode code points. It needs this information frequently so we cache it
  64   // here.
  65   std::map<int32_t, blink::WebFallbackFont> unicode_font_families_;
  66   // For debugging crbug.com/312965
  67   base::PlatformThreadId creation_thread_;
  68 #endif
  69 };
  70
  71 #if defined(OS_WIN)
  72
  73 bool PpapiBlinkPlatformImpl::SandboxSupport::ensureFontLoaded(HFONT font) {
  74   LOGFONT logfont;
  75   GetObject(font, sizeof(LOGFONT), &logfont);
  76
  77   // Use the proxy sender rather than going directly to the ChildThread since
  78   // the proxy browser sender will properly unlock during sync messages.
  79   return ppapi::proxy::PluginGlobals::Get()->GetBrowserSender()->Send(
  80       new ChildProcessHostMsg_PreCacheFont(logfont));
  81 }
  82
  83 #elif defined(OS_MACOSX)
  84
  85 bool PpapiBlinkPlatformImpl::SandboxSupport::loadFont(NSFont* src_font,
  86                                                       CGFontRef* out,
  87                                                       uint32_t* font_id) {
  88   // TODO(brettw) this should do the something similar to what
  89   // RendererBlinkPlatformImpl does and request that the browser load the font.
  90   // Note: need to unlock the proxy lock like ensureFontLoaded does.
  91   NOTIMPLEMENTED();
  92   return false;
  93 }
  94
  95 #elif defined(OS_ANDROID)
  96
  97 // Empty class.
  98
  99 #elif defined(OS_POSIX)
 100
 101 PpapiBlinkPlatformImpl::SandboxSupport::SandboxSupport()
 102     : creation_thread_(base::PlatformThread::CurrentId()) {
 103 }
 104
 105 void PpapiBlinkPlatformImpl::SandboxSupport::getFallbackFontForCharacter(
 106     WebUChar32 character,
 107     const char* preferred_locale,
 108     blink::WebFallbackFont* fallbackFont) {
 109   ppapi::ProxyLock::AssertAcquired();
 110   // For debugging crbug.com/312965
 111   CHECK_EQ(creation_thread_, base::PlatformThread::CurrentId());
 112   const std::map<int32_t, blink::WebFallbackFont>::const_iterator iter =
 113       unicode_font_families_.find(character);
 114   if (iter != unicode_font_families_.end()) {
 115     fallbackFont->name = iter->second.name;
 116     fallbackFont->filename = iter->second.filename;
 117     fallbackFont->fontconfigInterfaceId = iter->second.fontconfigInterfaceId;
 118     fallbackFont->ttcIndex = iter->second.ttcIndex;
 119     fallbackFont->isBold = iter->second.isBold;
 120     fallbackFont->isItalic = iter->second.isItalic;
 121     return;
 122   }
 123
 124   GetFallbackFontForCharacter(character, preferred_locale, fallbackFont);
 125   unicode_font_families_.insert(std::make_pair(character, *fallbackFont));
 126 }
 127
 128 void PpapiBlinkPlatformImpl::SandboxSupport::getRenderStyleForStrike(
 129     const char* family,
 130     int sizeAndStyle,
 131     blink::WebFontRenderStyle* out) {
 132   GetRenderStyleForStrike(family, sizeAndStyle, out);
 133 }
 134
 135 #endif
 136
 137 PpapiBlinkPlatformImpl::PpapiBlinkPlatformImpl()
 138     : sandbox_support_(new PpapiBlinkPlatformImpl::SandboxSupport()) {
 139 }
 140
 141 PpapiBlinkPlatformImpl::~PpapiBlinkPlatformImpl() {
 142 }
 143
 144 void PpapiBlinkPlatformImpl::Shutdown() {
 145   // SandboxSupport contains a map of WebFontFamily objects, which hold
 146   // WebCStrings, which become invalidated when blink is shut down. Hence, we
 147   // need to clear that map now, just before blink::shutdown() is called.
 148   sandbox_support_.reset();
 149 }
 150
 151 blink::WebClipboard* PpapiBlinkPlatformImpl::clipboard() {
 152   NOTREACHED();
 153   return NULL;
 154 }
 155
 156 blink::WebMimeRegistry* PpapiBlinkPlatformImpl::mimeRegistry() {
 157   NOTREACHED();
 158   return NULL;
 159 }
 160
 161 blink::WebFileUtilities* PpapiBlinkPlatformImpl::fileUtilities() {
 162   NOTREACHED();
 163   return NULL;
 164 }
 165
 166 blink::WebSandboxSupport* PpapiBlinkPlatformImpl::sandboxSupport() {
 167   return sandbox_support_.get();
 168 }
 169
 170 bool PpapiBlinkPlatformImpl::sandboxEnabled() {
 171   return true;  // Assume PPAPI is always sandboxed.
 172 }
 173
 174 unsigned long long PpapiBlinkPlatformImpl::visitedLinkHash(
 175     const char* canonical_url,
 176     size_t length) {
 177   NOTREACHED();
 178   return 0;
 179 }
 180
 181 bool PpapiBlinkPlatformImpl::isLinkVisited(unsigned long long link_hash) {
 182   NOTREACHED();
 183   return false;
 184 }
 185
 186 void PpapiBlinkPlatformImpl::createMessageChannel(
 187     blink::WebMessagePortChannel** channel1,
 188     blink::WebMessagePortChannel** channel2) {
 189   NOTREACHED();
 190   *channel1 = NULL;
 191   *channel2 = NULL;
 192 }
 193
 194 void PpapiBlinkPlatformImpl::setCookies(
 195     const blink::WebURL& url,
 196     const blink::WebURL& first_party_for_cookies,
 197     const blink::WebString& value) {
 198   NOTREACHED();
 199 }
 200
 201 blink::WebString PpapiBlinkPlatformImpl::cookies(
 202     const blink::WebURL& url,
 203     const blink::WebURL& first_party_for_cookies) {
 204   NOTREACHED();
 205   return blink::WebString();
 206 }
 207
 208 blink::WebString PpapiBlinkPlatformImpl::defaultLocale() {
 209   NOTREACHED();
 210   return blink::WebString();
 211 }
 212
 213 blink::WebThemeEngine* PpapiBlinkPlatformImpl::themeEngine() {
 214   NOTREACHED();
 215   return NULL;
 216 }
 217
 218 blink::WebURLLoader* PpapiBlinkPlatformImpl::createURLLoader() {
 219   NOTREACHED();
 220   return NULL;
 221 }
 222
 223 void PpapiBlinkPlatformImpl::getPluginList(
 224     bool refresh,
 225     blink::WebPluginListBuilder* builder) {
 226   NOTREACHED();
 227 }
 228
 229 blink::WebData PpapiBlinkPlatformImpl::loadResource(const char* name) {
 230   NOTREACHED();
 231   return blink::WebData();
 232 }
 233
 234 blink::WebStorageNamespace*
 235 PpapiBlinkPlatformImpl::createLocalStorageNamespace() {
 236   NOTREACHED();
 237   return 0;
 238 }
 239
 240 void PpapiBlinkPlatformImpl::dispatchStorageEvent(
 241     const blink::WebString& key,
 242     const blink::WebString& old_value,
 243     const blink::WebString& new_value,
 244     const blink::WebString& origin,
 245     const blink::WebURL& url,
 246     bool is_local_storage) {
 247   NOTREACHED();
 248 }
 249
 250 int PpapiBlinkPlatformImpl::databaseDeleteFile(
 251     const blink::WebString& vfs_file_name,
 252     bool sync_dir) {
 253   NOTREACHED();
 254   return 0;
 255 }
 256
 257 }  // namespace content