content/common/plugin_list_win.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/common/plugin_list.h"
   6
   7 #include <set>
   8
   9 #include "base/basictypes.h"
  10 #include "base/file_util.h"
  11 #include "base/file_version_info.h"
  12 #include "base/file_version_info_win.h"
  13 #include "base/files/memory_mapped_file.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/path_service.h"
  16 #include "base/strings/string_number_conversions.h"
  17 #include "base/strings/string_split.h"
  18 #include "base/strings/string_util.h"
  19 #include "base/win/pe_image.h"
  20 #include "base/win/registry.h"
  21 #include "base/win/scoped_handle.h"
  22 #include "base/win/windows_version.h"
  23 #include "content/common/plugin_constants_win.h"
  24
  25 namespace content {
  26 namespace {
  27
  28 const base::char16 kRegistryApps[] =
  29     L"Software\\Microsoft\\Windows\\CurrentVersion\\App Paths";
  30 const base::char16 kRegistryFirefox[] = L"firefox.exe";
  31 const base::char16 kRegistryAcrobat[] = L"Acrobat.exe";
  32 const base::char16 kRegistryAcrobatReader[] = L"AcroRd32.exe";
  33 const base::char16 kRegistryWindowsMedia[] = L"wmplayer.exe";
  34 const base::char16 kRegistryQuickTime[] = L"QuickTimePlayer.exe";
  35 const base::char16 kRegistryPath[] = L"Path";
  36 const base::char16 kRegistryFirefoxInstalled[] =
  37     L"SOFTWARE\\Mozilla\\Mozilla Firefox";
  38 const base::char16 kRegistryJava[] =
  39     L"Software\\JavaSoft\\Java Runtime Environment";
  40 const base::char16 kRegistryBrowserJavaVersion[] = L"BrowserJavaVersion";
  41 const base::char16 kRegistryCurrentJavaVersion[] = L"CurrentVersion";
  42 const base::char16 kRegistryJavaHome[] = L"JavaHome";
  43 const base::char16 kJavaDeploy1[] = L"npdeploytk.dll";
  44 const base::char16 kJavaDeploy2[] = L"npdeployjava1.dll";
  45
  46 base::FilePath AppendPluginsDir(const base::FilePath& path) {
  47   return path.AppendASCII("plugins");
  48 }
  49
  50 // Gets the directory where the application data and libraries exist.  This
  51 // may be a versioned subdirectory, or it may be the same directory as the
  52 // GetExeDirectory(), depending on the embedder's implementation.
  53 // Path is an output parameter to receive the path.
  54 void GetAppDirectory(std::set<base::FilePath>* plugin_dirs) {
  55   base::FilePath app_path;
  56   if (!PathService::Get(base::DIR_MODULE, &app_path))
  57     return;
  58   plugin_dirs->insert(AppendPluginsDir(app_path));
  59 }
  60
  61 // Gets the directory where the launching executable resides on disk.
  62 // Path is an output parameter to receive the path.
  63 void GetExeDirectory(std::set<base::FilePath>* plugin_dirs) {
  64   base::FilePath exe_path;
  65   if (!PathService::Get(base::DIR_EXE, &exe_path))
  66     return;
  67   plugin_dirs->insert(AppendPluginsDir(exe_path));
  68 }
  69
  70 // Gets the installed path for a registered app.
  71 bool GetInstalledPath(const base::char16* app, base::FilePath* out) {
  72   base::string16 reg_path(kRegistryApps);
  73   reg_path.append(L"\\");
  74   reg_path.append(app);
  75
  76   base::win::RegKey hkcu_key(HKEY_CURRENT_USER, reg_path.c_str(), KEY_READ);
  77   base::string16 path;
  78   // As of Win7 AppPaths can also be registered in HKCU: http://goo.gl/UgFOf.
  79   if (base::win::GetVersion() >= base::win::VERSION_WIN7 &&
  80       hkcu_key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
  81     *out = base::FilePath(path);
  82     return true;
  83   } else {
  84     base::win::RegKey hklm_key(HKEY_LOCAL_MACHINE, reg_path.c_str(), KEY_READ);
  85     if (hklm_key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
  86       *out = base::FilePath(path);
  87       return true;
  88     }
  89   }
  90
  91   return false;
  92 }
  93
  94 // Search the registry at the given path and detect plugin directories.
  95 void GetPluginsInRegistryDirectory(
  96     HKEY root_key,
  97     const base::string16& registry_folder,
  98     std::set<base::FilePath>* plugin_dirs) {
  99   for (base::win::RegistryKeyIterator iter(root_key, registry_folder.c_str());
 100        iter.Valid(); ++iter) {
 101     // Use the registry to gather plugin across the file system.
 102     base::string16 reg_path = registry_folder;
 103     reg_path.append(L"\\");
 104     reg_path.append(iter.Name());
 105     base::win::RegKey key(root_key, reg_path.c_str(), KEY_READ);
 106
 107     base::string16 path;
 108     if (key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS)
 109       plugin_dirs->insert(base::FilePath(path));
 110   }
 111 }
 112
 113 // Enumerate through the registry key to find all installed FireFox paths.
 114 // FireFox 3 beta and version 2 can coexist. See bug: 1025003
 115 void GetFirefoxInstalledPaths(std::vector<base::FilePath>* out) {
 116   base::win::RegistryKeyIterator it(HKEY_LOCAL_MACHINE,
 117                                     kRegistryFirefoxInstalled);
 118   for (; it.Valid(); ++it) {
 119     base::string16 full_path = base::string16(kRegistryFirefoxInstalled) +
 120         L"\\" + it.Name() + L"\\Main";
 121     base::win::RegKey key(HKEY_LOCAL_MACHINE, full_path.c_str(), KEY_READ);
 122     base::string16 install_dir;
 123     if (key.ReadValue(L"Install Directory", &install_dir) != ERROR_SUCCESS)
 124       continue;
 125     out->push_back(base::FilePath(install_dir));
 126   }
 127 }
 128
 129 // Get plugin directory locations from the Firefox install path.  This is kind
 130 // of a kludge, but it helps us locate the flash player for users that
 131 // already have it for firefox.  Not having to download yet-another-plugin
 132 // is a good thing.
 133 void GetFirefoxDirectory(std::set<base::FilePath>* plugin_dirs) {
 134   std::vector<base::FilePath> paths;
 135   GetFirefoxInstalledPaths(&paths);
 136   for (unsigned int i = 0; i < paths.size(); ++i) {
 137     plugin_dirs->insert(AppendPluginsDir(paths[i]));
 138   }
 139
 140   base::FilePath firefox_app_data_plugin_path;
 141   if (PathService::Get(base::DIR_APP_DATA, &firefox_app_data_plugin_path)) {
 142     firefox_app_data_plugin_path =
 143         firefox_app_data_plugin_path.AppendASCII("Mozilla");
 144     plugin_dirs->insert(AppendPluginsDir(firefox_app_data_plugin_path));
 145   }
 146 }
 147
 148 // Hardcoded logic to detect Acrobat plugins locations.
 149 void GetAcrobatDirectory(std::set<base::FilePath>* plugin_dirs) {
 150   base::FilePath path;
 151   if (!GetInstalledPath(kRegistryAcrobatReader, &path) &&
 152       !GetInstalledPath(kRegistryAcrobat, &path)) {
 153     return;
 154   }
 155
 156   plugin_dirs->insert(path.Append(L"Browser"));
 157 }
 158
 159 // Hardcoded logic to detect QuickTime plugin location.
 160 void GetQuicktimeDirectory(std::set<base::FilePath>* plugin_dirs) {
 161   base::FilePath path;
 162   if (GetInstalledPath(kRegistryQuickTime, &path))
 163     plugin_dirs->insert(AppendPluginsDir(path));
 164 }
 165
 166 // Hardcoded logic to detect Windows Media Player plugin location.
 167 void GetWindowsMediaDirectory(std::set<base::FilePath>* plugin_dirs) {
 168   base::FilePath path;
 169   if (GetInstalledPath(kRegistryWindowsMedia, &path))
 170     plugin_dirs->insert(path);
 171 }
 172
 173 // Hardcoded logic to detect Java plugin location.
 174 void GetJavaDirectory(std::set<base::FilePath>* plugin_dirs) {
 175   // Load the new NPAPI Java plugin
 176   // 1. Open the main JRE key under HKLM
 177   base::win::RegKey java_key(HKEY_LOCAL_MACHINE, kRegistryJava,
 178                              KEY_QUERY_VALUE);
 179
 180   // 2. Read the current Java version
 181   base::string16 java_version;
 182   if (java_key.ReadValue(kRegistryBrowserJavaVersion, &java_version) !=
 183       ERROR_SUCCESS) {
 184     java_key.ReadValue(kRegistryCurrentJavaVersion, &java_version);
 185   }
 186
 187   if (!java_version.empty()) {
 188     java_key.OpenKey(java_version.c_str(), KEY_QUERY_VALUE);
 189
 190     // 3. Install path of the JRE binaries is specified in "JavaHome"
 191     //    value under the Java version key.
 192     base::string16 java_plugin_directory;
 193     if (java_key.ReadValue(kRegistryJavaHome, &java_plugin_directory) ==
 194         ERROR_SUCCESS) {
 195       // 4. The new plugin resides under the 'bin/new_plugin'
 196       //    subdirectory.
 197       DCHECK(!java_plugin_directory.empty());
 198       java_plugin_directory.append(L"\\bin\\new_plugin");
 199
 200       // 5. We don't know the exact name of the DLL but it's in the form
 201       //    NP*.dll so just invoke LoadPlugins on this path.
 202       plugin_dirs->insert(base::FilePath(java_plugin_directory));
 203     }
 204   }
 205 }
 206
 207 bool IsValid32BitImage(const base::FilePath& path) {
 208   base::MemoryMappedFile plugin_image;
 209
 210   if (!plugin_image.InitializeAsImageSection(path))
 211     return false;
 212
 213   base::win::PEImage image(plugin_image.data());
 214
 215   PIMAGE_NT_HEADERS nt_headers = image.GetNTHeaders();
 216   return (nt_headers->FileHeader.Machine == IMAGE_FILE_MACHINE_I386);
 217 }
 218
 219 // Returns true if the given plugins share at least one mime type.  This is used
 220 // to differentiate newer versions of a plugin vs two plugins which happen to
 221 // have the same filename.
 222 bool HaveSharedMimeType(const WebPluginInfo& plugin1,
 223                         const WebPluginInfo& plugin2) {
 224   for (size_t i = 0; i < plugin1.mime_types.size(); ++i) {
 225     for (size_t j = 0; j < plugin2.mime_types.size(); ++j) {
 226       if (plugin1.mime_types[i].mime_type == plugin2.mime_types[j].mime_type)
 227         return true;
 228     }
 229   }
 230
 231   return false;
 232 }
 233
 234 // Compares Windows style version strings (i.e. 1,2,3,4).  Returns true if b's
 235 // version is newer than a's, or false if it's equal or older.
 236 bool IsNewerVersion(const base::string16& a, const base::string16& b) {
 237   std::vector<base::string16> a_ver, b_ver;
 238   base::SplitString(a, ',', &a_ver);
 239   base::SplitString(b, ',', &b_ver);
 240   if (a_ver.size() == 1 && b_ver.size() == 1) {
 241     base::SplitString(a, '.', &a_ver);
 242     base::SplitString(b, '.', &b_ver);
 243   }
 244   if (a_ver.size() != b_ver.size())
 245     return false;
 246   for (size_t i = 0; i < a_ver.size(); i++) {
 247     int cur_a, cur_b;
 248     base::StringToInt(a_ver[i], &cur_a);
 249     base::StringToInt(b_ver[i], &cur_b);
 250
 251     if (cur_a > cur_b)
 252       return false;
 253     if (cur_a < cur_b)
 254       return true;
 255   }
 256   return false;
 257 }
 258
 259 }  // namespace
 260
 261 bool PluginList::ReadWebPluginInfo(const base::FilePath& filename,
 262                                    WebPluginInfo* info) {
 263   // On windows, the way we get the mime types for the library is
 264   // to check the version information in the DLL itself.  This
 265   // will be a string of the format:  <type1>|<type2>|<type3>|...
 266   // For example:
 267   //     video/quicktime|audio/aiff|image/jpeg
 268   scoped_ptr<FileVersionInfo> version_info(
 269       FileVersionInfo::CreateFileVersionInfo(filename));
 270   if (!version_info) {
 271     LOG_IF(ERROR, PluginList::DebugPluginLoading())
 272         << "Could not get version info for plugin "
 273         << filename.value();
 274     return false;
 275   }
 276
 277   FileVersionInfoWin* version_info_win =
 278       static_cast<FileVersionInfoWin*>(version_info.get());
 279
 280   info->name = version_info->product_name();
 281   info->desc = version_info->file_description();
 282   info->version = version_info->file_version();
 283   info->path = filename;
 284
 285   // TODO(evan): Move the ParseMimeTypes code inline once Pepper is updated.
 286   if (!PluginList::ParseMimeTypes(
 287           UTF16ToASCII(version_info_win->GetStringValue(L"MIMEType")),
 288           UTF16ToASCII(version_info_win->GetStringValue(L"FileExtents")),
 289           version_info_win->GetStringValue(L"FileOpenName"),
 290           &info->mime_types)) {
 291     LOG_IF(ERROR, PluginList::DebugPluginLoading())
 292         << "Plugin " << info->name << " has bad MIME types, skipping";
 293     return false;
 294   }
 295
 296   return true;
 297 }
 298
 299 void PluginList::GetPluginDirectories(
 300     std::vector<base::FilePath>* plugin_dirs) {
 301   if (PluginList::plugins_discovery_disabled_)
 302     return;
 303
 304   // We use a set for uniqueness, which we require, over order, which we do not.
 305   std::set<base::FilePath> dirs;
 306
 307   // Load from the application-specific area
 308   GetAppDirectory(&dirs);
 309
 310   // Load from the executable area
 311   GetExeDirectory(&dirs);
 312
 313   // Load Java
 314   GetJavaDirectory(&dirs);
 315
 316   // Load firefox plugins too.  This is mainly to try to locate
 317   // a pre-installed Flash player.
 318   GetFirefoxDirectory(&dirs);
 319
 320   // Firefox hard-codes the paths of some popular plugins to ensure that
 321   // the plugins are found.  We are going to copy this as well.
 322   GetAcrobatDirectory(&dirs);
 323   GetQuicktimeDirectory(&dirs);
 324   GetWindowsMediaDirectory(&dirs);
 325
 326   for (std::set<base::FilePath>::iterator i = dirs.begin(); i != dirs.end(); ++i)
 327     plugin_dirs->push_back(*i);
 328 }
 329
 330 void PluginList::GetPluginsInDir(
 331     const base::FilePath& path, std::vector<base::FilePath>* plugins) {
 332   WIN32_FIND_DATA find_file_data;
 333   HANDLE find_handle;
 334
 335   base::string16 dir = path.value();
 336   // FindFirstFile requires that you specify a wildcard for directories.
 337   dir.append(L"\\NP*.DLL");
 338
 339   find_handle = FindFirstFile(dir.c_str(), &find_file_data);
 340   if (find_handle == INVALID_HANDLE_VALUE)
 341     return;
 342
 343   do {
 344     if (!(find_file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
 345       base::FilePath filename = path.Append(find_file_data.cFileName);
 346       plugins->push_back(filename);
 347     }
 348   } while (FindNextFile(find_handle, &find_file_data) != 0);
 349
 350   DCHECK(GetLastError() == ERROR_NO_MORE_FILES);
 351   FindClose(find_handle);
 352 }
 353
 354 void PluginList::GetPluginPathsFromRegistry(
 355     std::vector<base::FilePath>* plugins) {
 356   if (PluginList::plugins_discovery_disabled_)
 357     return;
 358
 359   std::set<base::FilePath> plugin_dirs;
 360
 361   GetPluginsInRegistryDirectory(
 362       HKEY_CURRENT_USER, kRegistryMozillaPlugins, &plugin_dirs);
 363   GetPluginsInRegistryDirectory(
 364       HKEY_LOCAL_MACHINE, kRegistryMozillaPlugins, &plugin_dirs);
 365
 366   for (std::set<base::FilePath>::iterator i = plugin_dirs.begin();
 367        i != plugin_dirs.end(); ++i) {
 368     plugins->push_back(*i);
 369   }
 370 }
 371
 372 bool PluginList::ShouldLoadPluginUsingPluginList(
 373     const WebPluginInfo& info,
 374     std::vector<WebPluginInfo>* plugins) {
 375   bool should_check_version = true;
 376   {
 377     base::AutoLock lock(lock_);
 378     should_check_version =
 379         std::find(extra_plugin_paths_.begin(), extra_plugin_paths_.end(),
 380                   info.path) == extra_plugin_paths_.end();
 381   }
 382   // Version check for plugins that are not coming from |extra_plugin_paths_|.
 383   if (should_check_version) {
 384     for (size_t j = 0; j < plugins->size(); ++j) {
 385       base::FilePath::StringType plugin1 =
 386           StringToLowerASCII((*plugins)[j].path.BaseName().value());
 387       base::FilePath::StringType plugin2 =
 388           StringToLowerASCII(info.path.BaseName().value());
 389       if ((plugin1 == plugin2 && HaveSharedMimeType((*plugins)[j], info)) ||
 390           (plugin1 == kJavaDeploy1 && plugin2 == kJavaDeploy2) ||
 391           (plugin1 == kJavaDeploy2 && plugin2 == kJavaDeploy1)) {
 392         if (IsNewerVersion(info.version, (*plugins)[j].version))
 393           return false;  // We have loaded a plugin whose version is newer.
 394         plugins->erase(plugins->begin() + j);
 395         break;
 396       }
 397     }
 398   }
 399
 400   // The checks below only apply to NPAPI plugins.
 401   if (info.type != WebPluginInfo::PLUGIN_TYPE_NPAPI)
 402     return true;
 403
 404   {
 405     base::AutoLock lock(lock_);
 406     // If the plugin is in our internal list we should load it.
 407     for (size_t i = 0; i < internal_plugins_.size(); ++i) {
 408       if (info.path == internal_plugins_[i].path)
 409         return true;
 410     }
 411   }
 412
 413   // Troublemakers.
 414   base::FilePath::StringType filename =
 415       StringToLowerASCII(info.path.BaseName().value());
 416   // Depends on XPCOM.
 417   if (filename == kMozillaActiveXPlugin)
 418     return false;
 419
 420   // Disable the Yahoo Application State plugin as it crashes the plugin
 421   // process on return from NPObjectStub::OnInvoke. Please refer to
 422   // http://b/issue?id=1372124 for more information.
 423   if (filename == kYahooApplicationStatePlugin)
 424     return false;
 425
 426   // Disable the WangWang protocol handler plugin (npww.dll) as it crashes
 427   // chrome during shutdown. Firefox also disables this plugin.
 428   // Please refer to http://code.google.com/p/chromium/issues/detail?id=3953
 429   // for more information.
 430   if (filename == kWanWangProtocolHandlerPlugin)
 431     return false;
 432
 433   // We only work with newer versions of the Java plugin which use NPAPI only
 434   // and don't depend on XPCOM.
 435   if (filename == kJavaPlugin1 || filename == kJavaPlugin2) {
 436     std::vector<base::FilePath::StringType> ver;
 437     base::SplitString(info.version, '.', &ver);
 438     int major, minor, update;
 439     if (ver.size() == 4 &&
 440         base::StringToInt(ver[0], &major) &&
 441         base::StringToInt(ver[1], &minor) &&
 442         base::StringToInt(ver[2], &update)) {
 443       if (major == 6 && minor == 0 && update < 120)
 444         return false;  // Java SE6 Update 11 or older.
 445     }
 446   }
 447
 448   // Special WMP handling:
 449   // If both the new and old WMP plugins exist, only load the new one.
 450   if (filename == kNewWMPPlugin) {
 451     for (size_t j = 0; j < plugins->size(); ++j) {
 452       if ((*plugins)[j].path.BaseName().value() == kOldWMPPlugin) {
 453         plugins->erase(plugins->begin() + j);
 454         break;
 455       }
 456     }
 457
 458   } else if (filename == kOldWMPPlugin) {
 459     for (size_t j = 0; j < plugins->size(); ++j) {
 460       if ((*plugins)[j].path.BaseName().value() == kNewWMPPlugin)
 461         return false;
 462     }
 463   }
 464
 465 #if !defined(ARCH_CPU_X86_64)
 466   // The plugin in question could be a 64 bit plugin which we cannot load.
 467   base::FilePath plugin_path(info.path);
 468   if (!IsValid32BitImage(base::MakeAbsoluteFilePath(plugin_path)))
 469     return false;
 470 #endif
 471   return true;
 472 }
 473
 474 }  // namespace content