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/strings/utf_string_conversions.h"
  20 #include "base/win/pe_image.h"
  21 #include "base/win/registry.h"
  22 #include "base/win/scoped_handle.h"
  23 #include "base/win/windows_version.h"
  24 #include "content/common/plugin_constants_win.h"
  25
  26 namespace content {
  27 namespace {
  28
  29 const base::char16 kRegistryApps[] =
  30     L"Software\\Microsoft\\Windows\\CurrentVersion\\App Paths";
  31 const base::char16 kRegistryFirefox[] = L"firefox.exe";
  32 const base::char16 kRegistryAcrobat[] = L"Acrobat.exe";
  33 const base::char16 kRegistryAcrobatReader[] = L"AcroRd32.exe";
  34 const base::char16 kRegistryWindowsMedia[] = L"wmplayer.exe";
  35 const base::char16 kRegistryQuickTime[] = L"QuickTimePlayer.exe";
  36 const base::char16 kRegistryPath[] = L"Path";
  37 const base::char16 kRegistryFirefoxInstalled[] =
  38     L"SOFTWARE\\Mozilla\\Mozilla Firefox";
  39 const base::char16 kRegistryJava[] =
  40     L"Software\\JavaSoft\\Java Runtime Environment";
  41 const base::char16 kRegistryBrowserJavaVersion[] = L"BrowserJavaVersion";
  42 const base::char16 kRegistryCurrentJavaVersion[] = L"CurrentVersion";
  43 const base::char16 kRegistryJavaHome[] = L"JavaHome";
  44 const base::char16 kJavaDeploy1[] = L"npdeploytk.dll";
  45 const base::char16 kJavaDeploy2[] = L"npdeployjava1.dll";
  46
  47 base::FilePath AppendPluginsDir(const base::FilePath& path) {
  48   return path.AppendASCII("plugins");
  49 }
  50
  51 // Gets the directory where the application data and libraries exist.  This
  52 // may be a versioned subdirectory, or it may be the same directory as the
  53 // GetExeDirectory(), depending on the embedder's implementation.
  54 // Path is an output parameter to receive the path.
  55 void GetAppDirectory(std::set<base::FilePath>* plugin_dirs) {
  56   base::FilePath app_path;
  57   if (!PathService::Get(base::DIR_MODULE, &app_path))
  58     return;
  59   plugin_dirs->insert(AppendPluginsDir(app_path));
  60 }
  61
  62 // Gets the directory where the launching executable resides on disk.
  63 // Path is an output parameter to receive the path.
  64 void GetExeDirectory(std::set<base::FilePath>* plugin_dirs) {
  65   base::FilePath exe_path;
  66   if (!PathService::Get(base::DIR_EXE, &exe_path))
  67     return;
  68   plugin_dirs->insert(AppendPluginsDir(exe_path));
  69 }
  70
  71 // Gets the installed path for a registered app.
  72 bool GetInstalledPath(const base::char16* app, base::FilePath* out) {
  73   base::string16 reg_path(kRegistryApps);
  74   reg_path.append(L"\\");
  75   reg_path.append(app);
  76
  77   base::win::RegKey hkcu_key(HKEY_CURRENT_USER, reg_path.c_str(), KEY_READ);
  78   base::string16 path;
  79   // As of Win7 AppPaths can also be registered in HKCU: http://goo.gl/UgFOf.
  80   if (base::win::GetVersion() >= base::win::VERSION_WIN7 &&
  81       hkcu_key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
  82     *out = base::FilePath(path);
  83     return true;
  84   } else {
  85     base::win::RegKey hklm_key(HKEY_LOCAL_MACHINE, reg_path.c_str(), KEY_READ);
  86     if (hklm_key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS) {
  87       *out = base::FilePath(path);
  88       return true;
  89     }
  90   }
  91
  92   return false;
  93 }
  94
  95 // Search the registry at the given path and detect plugin directories.
  96 void GetPluginsInRegistryDirectory(
  97     HKEY root_key,
  98     const base::string16& registry_folder,
  99     std::set<base::FilePath>* plugin_dirs) {
 100   for (base::win::RegistryKeyIterator iter(root_key, registry_folder.c_str());
 101        iter.Valid(); ++iter) {
 102     // Use the registry to gather plugin across the file system.
 103     base::string16 reg_path = registry_folder;
 104     reg_path.append(L"\\");
 105     reg_path.append(iter.Name());
 106     base::win::RegKey key(root_key, reg_path.c_str(), KEY_READ);
 107
 108     base::string16 path;
 109     if (key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS)
 110       plugin_dirs->insert(base::FilePath(path));
 111   }
 112 }
 113
 114 // Enumerate through the registry key to find all installed FireFox paths.
 115 // FireFox 3 beta and version 2 can coexist. See bug: 1025003
 116 void GetFirefoxInstalledPaths(std::vector<base::FilePath>* out) {
 117   base::win::RegistryKeyIterator it(HKEY_LOCAL_MACHINE,
 118                                     kRegistryFirefoxInstalled);
 119   for (; it.Valid(); ++it) {
 120     base::string16 full_path = base::string16(kRegistryFirefoxInstalled) +
 121         L"\\" + it.Name() + L"\\Main";
 122     base::win::RegKey key(HKEY_LOCAL_MACHINE, full_path.c_str(), KEY_READ);
 123     base::string16 install_dir;
 124     if (key.ReadValue(L"Install Directory", &install_dir) != ERROR_SUCCESS)
 125       continue;
 126     out->push_back(base::FilePath(install_dir));
 127   }
 128 }
 129
 130 // Get plugin directory locations from the Firefox install path.  This is kind
 131 // of a kludge, but it helps us locate the flash player for users that
 132 // already have it for firefox.  Not having to download yet-another-plugin
 133 // is a good thing.
 134 void GetFirefoxDirectory(std::set<base::FilePath>* plugin_dirs) {
 135   std::vector<base::FilePath> paths;
 136   GetFirefoxInstalledPaths(&paths);
 137   for (unsigned int i = 0; i < paths.size(); ++i) {
 138     plugin_dirs->insert(AppendPluginsDir(paths[i]));
 139   }
 140
 141   base::FilePath firefox_app_data_plugin_path;
 142   if (PathService::Get(base::DIR_APP_DATA, &firefox_app_data_plugin_path)) {
 143     firefox_app_data_plugin_path =
 144         firefox_app_data_plugin_path.AppendASCII("Mozilla");
 145     plugin_dirs->insert(AppendPluginsDir(firefox_app_data_plugin_path));
 146   }
 147 }
 148
 149 // Hardcoded logic to detect Acrobat plugins locations.
 150 void GetAcrobatDirectory(std::set<base::FilePath>* plugin_dirs) {
 151   base::FilePath path;
 152   if (!GetInstalledPath(kRegistryAcrobatReader, &path) &&
 153       !GetInstalledPath(kRegistryAcrobat, &path)) {
 154     return;
 155   }
 156
 157   plugin_dirs->insert(path.Append(L"Browser"));
 158 }
 159
 160 // Hardcoded logic to detect QuickTime plugin location.
 161 void GetQuicktimeDirectory(std::set<base::FilePath>* plugin_dirs) {
 162   base::FilePath path;
 163   if (GetInstalledPath(kRegistryQuickTime, &path))
 164     plugin_dirs->insert(AppendPluginsDir(path));
 165 }
 166
 167 // Hardcoded logic to detect Windows Media Player plugin location.
 168 void GetWindowsMediaDirectory(std::set<base::FilePath>* plugin_dirs) {
 169   base::FilePath path;
 170   if (GetInstalledPath(kRegistryWindowsMedia, &path))
 171     plugin_dirs->insert(path);
 172 }
 173
 174 // Hardcoded logic to detect Java plugin location.
 175 void GetJavaDirectory(std::set<base::FilePath>* plugin_dirs) {
 176   // Load the new NPAPI Java plugin
 177   // 1. Open the main JRE key under HKLM
 178   base::win::RegKey java_key(HKEY_LOCAL_MACHINE, kRegistryJava,
 179                              KEY_QUERY_VALUE);
 180
 181   // 2. Read the current Java version
 182   base::string16 java_version;
 183   if (java_key.ReadValue(kRegistryBrowserJavaVersion, &java_version) !=
 184       ERROR_SUCCESS) {
 185     java_key.ReadValue(kRegistryCurrentJavaVersion, &java_version);
 186   }
 187
 188   if (!java_version.empty()) {
 189     java_key.OpenKey(java_version.c_str(), KEY_QUERY_VALUE);
 190
 191     // 3. Install path of the JRE binaries is specified in "JavaHome"
 192     //    value under the Java version key.
 193     base::string16 java_plugin_directory;
 194     if (java_key.ReadValue(kRegistryJavaHome, &java_plugin_directory) ==
 195         ERROR_SUCCESS) {
 196       // 4. The new plugin resides under the 'bin/new_plugin'
 197       //    subdirectory.
 198       DCHECK(!java_plugin_directory.empty());
 199       java_plugin_directory.append(L"\\bin\\new_plugin");
 200
 201       // 5. We don't know the exact name of the DLL but it's in the form
 202       //    NP*.dll so just invoke LoadPlugins on this path.
 203       plugin_dirs->insert(base::FilePath(java_plugin_directory));
 204     }
 205   }
 206 }
 207
 208 bool IsValid32BitImage(const base::FilePath& path) {
 209   base::MemoryMappedFile plugin_image;
 210
 211   if (!plugin_image.InitializeAsImageSection(path))
 212     return false;
 213
 214   base::win::PEImage image(plugin_image.data());
 215
 216   PIMAGE_NT_HEADERS nt_headers = image.GetNTHeaders();
 217   return (nt_headers->FileHeader.Machine == IMAGE_FILE_MACHINE_I386);
 218 }
 219
 220 // Returns true if the given plugins share at least one mime type.  This is used
 221 // to differentiate newer versions of a plugin vs two plugins which happen to
 222 // have the same filename.
 223 bool HaveSharedMimeType(const WebPluginInfo& plugin1,
 224                         const WebPluginInfo& plugin2) {
 225   for (size_t i = 0; i < plugin1.mime_types.size(); ++i) {
 226     for (size_t j = 0; j < plugin2.mime_types.size(); ++j) {
 227       if (plugin1.mime_types[i].mime_type == plugin2.mime_types[j].mime_type)
 228         return true;
 229     }
 230   }
 231
 232   return false;
 233 }
 234
 235 // Compares Windows style version strings (i.e. 1,2,3,4).  Returns true if b's
 236 // version is newer than a's, or false if it's equal or older.
 237 bool IsNewerVersion(const base::string16& a, const base::string16& b) {
 238   std::vector<base::string16> a_ver, b_ver;
 239   base::SplitString(a, ',', &a_ver);
 240   base::SplitString(b, ',', &b_ver);
 241   if (a_ver.size() == 1 && b_ver.size() == 1) {
 242     base::SplitString(a, '.', &a_ver);
 243     base::SplitString(b, '.', &b_ver);
 244   }
 245   if (a_ver.size() != b_ver.size())
 246     return false;
 247   for (size_t i = 0; i < a_ver.size(); i++) {
 248     int cur_a, cur_b;
 249     base::StringToInt(a_ver[i], &cur_a);
 250     base::StringToInt(b_ver[i], &cur_b);
 251
 252     if (cur_a > cur_b)
 253       return false;
 254     if (cur_a < cur_b)
 255       return true;
 256   }
 257   return false;
 258 }
 259
 260 }  // namespace
 261
 262 bool PluginList::ReadWebPluginInfo(const base::FilePath& filename,
 263                                    WebPluginInfo* info) {
 264   // On windows, the way we get the mime types for the library is
 265   // to check the version information in the DLL itself.  This
 266   // will be a string of the format:  <type1>|<type2>|<type3>|...
 267   // For example:
 268   //     video/quicktime|audio/aiff|image/jpeg
 269   scoped_ptr<FileVersionInfo> version_info(
 270       FileVersionInfo::CreateFileVersionInfo(filename));
 271   if (!version_info) {
 272     LOG_IF(ERROR, PluginList::DebugPluginLoading())
 273         << "Could not get version info for plugin "
 274         << filename.value();
 275     return false;
 276   }
 277
 278   FileVersionInfoWin* version_info_win =
 279       static_cast<FileVersionInfoWin*>(version_info.get());
 280
 281   info->name = version_info->product_name();
 282   info->desc = version_info->file_description();
 283   info->version = version_info->file_version();
 284   info->path = filename;
 285
 286   // TODO(evan): Move the ParseMimeTypes code inline once Pepper is updated.
 287   if (!PluginList::ParseMimeTypes(
 288           base::UTF16ToASCII(version_info_win->GetStringValue(L"MIMEType")),
 289           base::UTF16ToASCII(version_info_win->GetStringValue(L"FileExtents")),
 290           version_info_win->GetStringValue(L"FileOpenName"),
 291           &info->mime_types)) {
 292     LOG_IF(ERROR, PluginList::DebugPluginLoading())
 293         << "Plugin " << info->name << " has bad MIME types, skipping";
 294     return false;
 295   }
 296
 297   return true;
 298 }
 299
 300 void PluginList::GetPluginDirectories(
 301     std::vector<base::FilePath>* plugin_dirs) {
 302   if (PluginList::plugins_discovery_disabled_)
 303     return;
 304
 305   // We use a set for uniqueness, which we require, over order, which we do not.
 306   std::set<base::FilePath> dirs;
 307
 308   // Load from the application-specific area
 309   GetAppDirectory(&dirs);
 310
 311   // Load from the executable area
 312   GetExeDirectory(&dirs);
 313
 314   // Load Java
 315   GetJavaDirectory(&dirs);
 316
 317   // Load firefox plugins too.  This is mainly to try to locate
 318   // a pre-installed Flash player.
 319   GetFirefoxDirectory(&dirs);
 320
 321   // Firefox hard-codes the paths of some popular plugins to ensure that
 322   // the plugins are found.  We are going to copy this as well.
 323   GetAcrobatDirectory(&dirs);
 324   GetQuicktimeDirectory(&dirs);
 325   GetWindowsMediaDirectory(&dirs);
 326
 327   for (std::set<base::FilePath>::iterator i = dirs.begin(); i != dirs.end(); ++i)
 328     plugin_dirs->push_back(*i);
 329 }
 330
 331 void PluginList::GetPluginsInDir(
 332     const base::FilePath& path, std::vector<base::FilePath>* plugins) {
 333   WIN32_FIND_DATA find_file_data;
 334   HANDLE find_handle;
 335
 336   base::string16 dir = path.value();
 337   // FindFirstFile requires that you specify a wildcard for directories.
 338   dir.append(L"\\NP*.DLL");
 339
 340   find_handle = FindFirstFile(dir.c_str(), &find_file_data);
 341   if (find_handle == INVALID_HANDLE_VALUE)
 342     return;
 343
 344   do {
 345     if (!(find_file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
 346       base::FilePath filename = path.Append(find_file_data.cFileName);
 347       plugins->push_back(filename);
 348     }
 349   } while (FindNextFile(find_handle, &find_file_data) != 0);
 350
 351   DCHECK(GetLastError() == ERROR_NO_MORE_FILES);
 352   FindClose(find_handle);
 353 }
 354
 355 void PluginList::GetPluginPathsFromRegistry(
 356     std::vector<base::FilePath>* plugins) {
 357   if (PluginList::plugins_discovery_disabled_)
 358     return;
 359
 360   std::set<base::FilePath> plugin_dirs;
 361
 362   GetPluginsInRegistryDirectory(
 363       HKEY_CURRENT_USER, kRegistryMozillaPlugins, &plugin_dirs);
 364   GetPluginsInRegistryDirectory(
 365       HKEY_LOCAL_MACHINE, kRegistryMozillaPlugins, &plugin_dirs);
 366
 367   for (std::set<base::FilePath>::iterator i = plugin_dirs.begin();
 368        i != plugin_dirs.end(); ++i) {
 369     plugins->push_back(*i);
 370   }
 371 }
 372
 373 bool PluginList::ShouldLoadPluginUsingPluginList(
 374     const WebPluginInfo& info,
 375     std::vector<WebPluginInfo>* plugins) {
 376   bool should_check_version = true;
 377   {
 378     base::AutoLock lock(lock_);
 379     should_check_version =
 380         std::find(extra_plugin_paths_.begin(), extra_plugin_paths_.end(),
 381                   info.path) == extra_plugin_paths_.end();
 382   }
 383   // Version check for plugins that are not coming from |extra_plugin_paths_|.
 384   if (should_check_version) {
 385     for (size_t j = 0; j < plugins->size(); ++j) {
 386       base::FilePath::StringType plugin1 =
 387           StringToLowerASCII((*plugins)[j].path.BaseName().value());
 388       base::FilePath::StringType plugin2 =
 389           StringToLowerASCII(info.path.BaseName().value());
 390       if ((plugin1 == plugin2 && HaveSharedMimeType((*plugins)[j], info)) ||
 391           (plugin1 == kJavaDeploy1 && plugin2 == kJavaDeploy2) ||
 392           (plugin1 == kJavaDeploy2 && plugin2 == kJavaDeploy1)) {
 393         if (IsNewerVersion(info.version, (*plugins)[j].version))
 394           return false;  // We have loaded a plugin whose version is newer.
 395         plugins->erase(plugins->begin() + j);
 396         break;
 397       }
 398     }
 399   }
 400
 401   // The checks below only apply to NPAPI plugins.
 402   if (info.type != WebPluginInfo::PLUGIN_TYPE_NPAPI)
 403     return true;
 404
 405   {
 406     base::AutoLock lock(lock_);
 407     // If the plugin is in our internal list we should load it.
 408     for (size_t i = 0; i < internal_plugins_.size(); ++i) {
 409       if (info.path == internal_plugins_[i].path)
 410         return true;
 411     }
 412   }
 413
 414   // Troublemakers.
 415   base::FilePath::StringType filename =
 416       StringToLowerASCII(info.path.BaseName().value());
 417   // Depends on XPCOM.
 418   if (filename == kMozillaActiveXPlugin)
 419     return false;
 420
 421   // Disable the Yahoo Application State plugin as it crashes the plugin
 422   // process on return from NPObjectStub::OnInvoke. Please refer to
 423   // http://b/issue?id=1372124 for more information.
 424   if (filename == kYahooApplicationStatePlugin)
 425     return false;
 426
 427   // Disable the WangWang protocol handler plugin (npww.dll) as it crashes
 428   // chrome during shutdown. Firefox also disables this plugin.
 429   // Please refer to http://code.google.com/p/chromium/issues/detail?id=3953
 430   // for more information.
 431   if (filename == kWanWangProtocolHandlerPlugin)
 432     return false;
 433
 434   // We only work with newer versions of the Java plugin which use NPAPI only
 435   // and don't depend on XPCOM.
 436   if (filename == kJavaPlugin1 || filename == kJavaPlugin2) {
 437     std::vector<base::FilePath::StringType> ver;
 438     base::SplitString(info.version, '.', &ver);
 439     int major, minor, update;
 440     if (ver.size() == 4 &&
 441         base::StringToInt(ver[0], &major) &&
 442         base::StringToInt(ver[1], &minor) &&
 443         base::StringToInt(ver[2], &update)) {
 444       if (major == 6 && minor == 0 && update < 120)
 445         return false;  // Java SE6 Update 11 or older.
 446     }
 447   }
 448
 449   // Special WMP handling:
 450   // If both the new and old WMP plugins exist, only load the new one.
 451   if (filename == kNewWMPPlugin) {
 452     for (size_t j = 0; j < plugins->size(); ++j) {
 453       if ((*plugins)[j].path.BaseName().value() == kOldWMPPlugin) {
 454         plugins->erase(plugins->begin() + j);
 455         break;
 456       }
 457     }
 458
 459   } else if (filename == kOldWMPPlugin) {
 460     for (size_t j = 0; j < plugins->size(); ++j) {
 461       if ((*plugins)[j].path.BaseName().value() == kNewWMPPlugin)
 462         return false;
 463     }
 464   }
 465
 466   base::FilePath plugin_path(info.path);
 467 #if defined(ARCH_CPU_X86_64)
 468   // The plugin in question could be a 32 bit plugin which we cannot load.
 469   if (IsValid32BitImage(base::MakeAbsoluteFilePath(plugin_path)))
 470     return false;
 471 #else
 472   // The plugin in question could be a 64 bit plugin which we cannot load.
 473   if (!IsValid32BitImage(base::MakeAbsoluteFilePath(plugin_path)))
 474     return false;
 475 #endif
 476   return true;
 477 }
 478
 479 }  // namespace content