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_version_info.h"
  11 #include "base/file_version_info_win.h"
  12 #include "base/files/file_util.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 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(HKEY root_key,
  96                                    const base::string16& registry_folder,
  97                                    REGSAM wow64_access,
  98                                    std::set<base::FilePath>* plugin_dirs) {
  99   for (base::win::RegistryKeyIterator iter(
 100            root_key, registry_folder.c_str(), wow64_access);
 101        iter.Valid();
 102        ++iter) {
 103     // Use the registry to gather plugin across the file system.
 104     base::string16 reg_path = registry_folder;
 105     reg_path.append(L"\\");
 106     reg_path.append(iter.Name());
 107     base::win::RegKey key(root_key, reg_path.c_str(), KEY_READ | wow64_access);
 108
 109     base::string16 path;
 110     if (key.ReadValue(kRegistryPath, &path) == ERROR_SUCCESS)
 111       plugin_dirs->insert(base::FilePath(path));
 112   }
 113 }
 114
 115 // Enumerate through the registry key to find all installed FireFox paths.
 116 // FireFox 3 beta and version 2 can coexist. See bug: 1025003
 117 void GetFirefoxInstalledPaths(std::vector<base::FilePath>* out) {
 118   base::win::RegistryKeyIterator it(HKEY_LOCAL_MACHINE,
 119                                     kRegistryFirefoxInstalled,
 120                                     KEY_WOW64_32KEY);
 121   for (; it.Valid(); ++it) {
 122     base::string16 full_path = base::string16(kRegistryFirefoxInstalled) +
 123         L"\\" + it.Name() + L"\\Main";
 124     base::win::RegKey key(HKEY_LOCAL_MACHINE, full_path.c_str(), KEY_READ);
 125     base::string16 install_dir;
 126     if (key.ReadValue(L"Install Directory", &install_dir) != ERROR_SUCCESS)
 127       continue;
 128     out->push_back(base::FilePath(install_dir));
 129   }
 130 }
 131
 132 // Get plugin directory locations from the Firefox install path.  This is kind
 133 // of a kludge, but it helps us locate the flash player for users that
 134 // already have it for firefox.  Not having to download yet-another-plugin
 135 // is a good thing.
 136 void GetFirefoxDirectory(std::set<base::FilePath>* plugin_dirs) {
 137   std::vector<base::FilePath> paths;
 138   GetFirefoxInstalledPaths(&paths);
 139   for (unsigned int i = 0; i < paths.size(); ++i) {
 140     plugin_dirs->insert(AppendPluginsDir(paths[i]));
 141   }
 142
 143   base::FilePath firefox_app_data_plugin_path;
 144   if (PathService::Get(base::DIR_APP_DATA, &firefox_app_data_plugin_path)) {
 145     firefox_app_data_plugin_path =
 146         firefox_app_data_plugin_path.AppendASCII("Mozilla");
 147     plugin_dirs->insert(AppendPluginsDir(firefox_app_data_plugin_path));
 148   }
 149 }
 150
 151 // Hardcoded logic to detect Acrobat plugins locations.
 152 void GetAcrobatDirectory(std::set<base::FilePath>* plugin_dirs) {
 153   base::FilePath path;
 154   if (!GetInstalledPath(kRegistryAcrobatReader, &path) &&
 155       !GetInstalledPath(kRegistryAcrobat, &path)) {
 156     return;
 157   }
 158
 159   plugin_dirs->insert(path.Append(L"Browser"));
 160 }
 161
 162 // Hardcoded logic to detect QuickTime plugin location.
 163 void GetQuicktimeDirectory(std::set<base::FilePath>* plugin_dirs) {
 164   base::FilePath path;
 165   if (GetInstalledPath(kRegistryQuickTime, &path))
 166     plugin_dirs->insert(AppendPluginsDir(path));
 167 }
 168
 169 // Hardcoded logic to detect Windows Media Player plugin location.
 170 void GetWindowsMediaDirectory(std::set<base::FilePath>* plugin_dirs) {
 171   base::FilePath path;
 172   if (GetInstalledPath(kRegistryWindowsMedia, &path))
 173     plugin_dirs->insert(path);
 174 }
 175
 176 // Hardcoded logic to detect Java plugin location.
 177 void GetJavaDirectory(std::set<base::FilePath>* plugin_dirs) {
 178   // Load the new NPAPI Java plugin
 179   // 1. Open the main JRE key under HKLM
 180   base::win::RegKey java_key(HKEY_LOCAL_MACHINE, kRegistryJava,
 181                              KEY_QUERY_VALUE);
 182
 183   // 2. Read the current Java version
 184   base::string16 java_version;
 185   if (java_key.ReadValue(kRegistryBrowserJavaVersion, &java_version) !=
 186       ERROR_SUCCESS) {
 187     java_key.ReadValue(kRegistryCurrentJavaVersion, &java_version);
 188   }
 189
 190   if (!java_version.empty()) {
 191     java_key.OpenKey(java_version.c_str(), KEY_QUERY_VALUE);
 192
 193     // 3. Install path of the JRE binaries is specified in "JavaHome"
 194     //    value under the Java version key.
 195     base::string16 java_plugin_directory;
 196     if (java_key.ReadValue(kRegistryJavaHome, &java_plugin_directory) ==
 197         ERROR_SUCCESS) {
 198       // 4. The new plugin resides under the 'bin/new_plugin'
 199       //    subdirectory.
 200       DCHECK(!java_plugin_directory.empty());
 201       java_plugin_directory.append(L"\\bin\\new_plugin");
 202
 203       // 5. We don't know the exact name of the DLL but it's in the form
 204       //    NP*.dll so just invoke LoadPlugins on this path.
 205       plugin_dirs->insert(base::FilePath(java_plugin_directory));
 206     }
 207   }
 208 }
 209
 210 bool IsValid32BitImage(const base::FilePath& path) {
 211   base::MemoryMappedFile plugin_image;
 212
 213   if (!plugin_image.InitializeAsImageSection(path))
 214     return false;
 215
 216   base::win::PEImage image(plugin_image.data());
 217
 218   PIMAGE_NT_HEADERS nt_headers = image.GetNTHeaders();
 219   return (nt_headers->FileHeader.Machine == IMAGE_FILE_MACHINE_I386);
 220 }
 221
 222 // Returns true if the given plugins share at least one mime type.  This is used
 223 // to differentiate newer versions of a plugin vs two plugins which happen to
 224 // have the same filename.
 225 bool HaveSharedMimeType(const WebPluginInfo& plugin1,
 226                         const WebPluginInfo& plugin2) {
 227   for (size_t i = 0; i < plugin1.mime_types.size(); ++i) {
 228     for (size_t j = 0; j < plugin2.mime_types.size(); ++j) {
 229       if (plugin1.mime_types[i].mime_type == plugin2.mime_types[j].mime_type)
 230         return true;
 231     }
 232   }
 233
 234   return false;
 235 }
 236
 237 // Compares Windows style version strings (i.e. 1,2,3,4).  Returns true if b's
 238 // version is newer than a's, or false if it's equal or older.
 239 bool IsNewerVersion(const base::string16& a, const base::string16& b) {
 240   std::vector<base::string16> a_ver, b_ver;
 241   base::SplitString(a, ',', &a_ver);
 242   base::SplitString(b, ',', &b_ver);
 243   if (a_ver.size() == 1 && b_ver.size() == 1) {
 244     base::SplitString(a, '.', &a_ver);
 245     base::SplitString(b, '.', &b_ver);
 246   }
 247   if (a_ver.size() != b_ver.size())
 248     return false;
 249   for (size_t i = 0; i < a_ver.size(); i++) {
 250     int cur_a, cur_b;
 251     base::StringToInt(a_ver[i], &cur_a);
 252     base::StringToInt(b_ver[i], &cur_b);
 253
 254     if (cur_a > cur_b)
 255       return false;
 256     if (cur_a < cur_b)
 257       return true;
 258   }
 259   return false;
 260 }
 261
 262 }  // namespace
 263
 264 bool PluginList::ReadWebPluginInfo(const base::FilePath& filename,
 265                                    WebPluginInfo* info) {
 266   // On windows, the way we get the mime types for the library is
 267   // to check the version information in the DLL itself.  This
 268   // will be a string of the format:  <type1>|<type2>|<type3>|...
 269   // For example:
 270   //     video/quicktime|audio/aiff|image/jpeg
 271   scoped_ptr<FileVersionInfo> version_info(
 272       FileVersionInfo::CreateFileVersionInfo(filename));
 273   if (!version_info) {
 274     LOG_IF(ERROR, PluginList::DebugPluginLoading())
 275         << "Could not get version info for plugin "
 276         << filename.value();
 277     return false;
 278   }
 279
 280   FileVersionInfoWin* version_info_win =
 281       static_cast<FileVersionInfoWin*>(version_info.get());
 282
 283   info->name = version_info->product_name();
 284   info->desc = version_info->file_description();
 285   info->version = version_info->file_version();
 286   info->path = filename;
 287
 288   // TODO(evan): Move the ParseMimeTypes code inline once Pepper is updated.
 289   if (!PluginList::ParseMimeTypes(
 290           base::UTF16ToASCII(version_info_win->GetStringValue(L"MIMEType")),
 291           base::UTF16ToASCII(version_info_win->GetStringValue(L"FileExtents")),
 292           version_info_win->GetStringValue(L"FileOpenName"),
 293           &info->mime_types)) {
 294     LOG_IF(ERROR, PluginList::DebugPluginLoading())
 295         << "Plugin " << info->name << " has bad MIME types, skipping";
 296     return false;
 297   }
 298
 299   return true;
 300 }
 301
 302 void PluginList::GetPluginDirectories(
 303     std::vector<base::FilePath>* plugin_dirs) {
 304   if (PluginList::plugins_discovery_disabled_)
 305     return;
 306
 307   // We use a set for uniqueness, which we require, over order, which we do not.
 308   std::set<base::FilePath> dirs;
 309
 310   // Load from the application-specific area
 311   GetAppDirectory(&dirs);
 312
 313   // Load from the executable area
 314   GetExeDirectory(&dirs);
 315
 316   // Load Java
 317   GetJavaDirectory(&dirs);
 318
 319   // Load firefox plugins too.  This is mainly to try to locate
 320   // a pre-installed Flash player.
 321   GetFirefoxDirectory(&dirs);
 322
 323   // Firefox hard-codes the paths of some popular plugins to ensure that
 324   // the plugins are found.  We are going to copy this as well.
 325   GetAcrobatDirectory(&dirs);
 326   GetQuicktimeDirectory(&dirs);
 327   GetWindowsMediaDirectory(&dirs);
 328
 329   for (std::set<base::FilePath>::iterator i = dirs.begin(); i != dirs.end(); ++i)
 330     plugin_dirs->push_back(*i);
 331 }
 332
 333 void PluginList::GetPluginsInDir(
 334     const base::FilePath& path, std::vector<base::FilePath>* plugins) {
 335   WIN32_FIND_DATA find_file_data;
 336   HANDLE find_handle;
 337
 338   base::string16 dir = path.value();
 339   // FindFirstFile requires that you specify a wildcard for directories.
 340   dir.append(L"\\NP*.DLL");
 341
 342   find_handle = FindFirstFile(dir.c_str(), &find_file_data);
 343   if (find_handle == INVALID_HANDLE_VALUE)
 344     return;
 345
 346   do {
 347     if (!(find_file_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) {
 348       base::FilePath filename = path.Append(find_file_data.cFileName);
 349       plugins->push_back(filename);
 350     }
 351   } while (FindNextFile(find_handle, &find_file_data) != 0);
 352
 353   DCHECK(GetLastError() == ERROR_NO_MORE_FILES);
 354   FindClose(find_handle);
 355 }
 356
 357 void PluginList::GetPluginPathsFromRegistry(
 358     std::vector<base::FilePath>* plugins) {
 359   if (PluginList::plugins_discovery_disabled_)
 360     return;
 361
 362   std::set<base::FilePath> plugin_dirs;
 363
 364   // Search for plugins from HKCU and HKLM.  THis will only find plugins that
 365   // are correctly registered in the correct WOW64 registry hive.
 366   GetPluginsInRegistryDirectory(HKEY_CURRENT_USER,
 367                                 kRegistryMozillaPlugins,
 368                                 0,
 369                                 &plugin_dirs);
 370   GetPluginsInRegistryDirectory(HKEY_LOCAL_MACHINE,
 371                                 kRegistryMozillaPlugins,
 372                                 0,
 373                                 &plugin_dirs);
 374
 375   for (std::set<base::FilePath>::iterator i = plugin_dirs.begin();
 376        i != plugin_dirs.end(); ++i) {
 377     plugins->push_back(*i);
 378   }
 379 }
 380
 381 bool PluginList::ShouldLoadPluginUsingPluginList(
 382     const WebPluginInfo& info,
 383     std::vector<WebPluginInfo>* plugins) {
 384   bool should_check_version = true;
 385   {
 386     base::AutoLock lock(lock_);
 387     should_check_version =
 388         std::find(extra_plugin_paths_.begin(), extra_plugin_paths_.end(),
 389                   info.path) == extra_plugin_paths_.end();
 390   }
 391   // Version check for plugins that are not coming from |extra_plugin_paths_|.
 392   if (should_check_version) {
 393     for (size_t j = 0; j < plugins->size(); ++j) {
 394       base::FilePath::StringType plugin1 =
 395           base::StringToLowerASCII((*plugins)[j].path.BaseName().value());
 396       base::FilePath::StringType plugin2 =
 397           base::StringToLowerASCII(info.path.BaseName().value());
 398       if ((plugin1 == plugin2 && HaveSharedMimeType((*plugins)[j], info)) ||
 399           (plugin1 == kJavaDeploy1 && plugin2 == kJavaDeploy2) ||
 400           (plugin1 == kJavaDeploy2 && plugin2 == kJavaDeploy1)) {
 401         if (IsNewerVersion(info.version, (*plugins)[j].version))
 402           return false;  // We have loaded a plugin whose version is newer.
 403         plugins->erase(plugins->begin() + j);
 404         break;
 405       }
 406     }
 407   }
 408
 409   // The checks below only apply to NPAPI plugins.
 410   if (info.type != WebPluginInfo::PLUGIN_TYPE_NPAPI)
 411     return true;
 412
 413   {
 414     base::AutoLock lock(lock_);
 415     // If the plugin is in our internal list we should load it.
 416     for (size_t i = 0; i < internal_plugins_.size(); ++i) {
 417       if (info.path == internal_plugins_[i].path)
 418         return true;
 419     }
 420   }
 421
 422   // Troublemakers.
 423   base::FilePath::StringType filename =
 424       base::StringToLowerASCII(info.path.BaseName().value());
 425   // Depends on XPCOM.
 426   if (filename == kMozillaActiveXPlugin)
 427     return false;
 428
 429   // Disable the Yahoo Application State plugin as it crashes the plugin
 430   // process on return from NPObjectStub::OnInvoke. Please refer to
 431   // http://b/issue?id=1372124 for more information.
 432   if (filename == kYahooApplicationStatePlugin)
 433     return false;
 434
 435   // Disable the WangWang protocol handler plugin (npww.dll) as it crashes
 436   // chrome during shutdown. Firefox also disables this plugin.
 437   // Please refer to http://code.google.com/p/chromium/issues/detail?id=3953
 438   // for more information.
 439   if (filename == kWanWangProtocolHandlerPlugin)
 440     return false;
 441
 442   // We only work with newer versions of the Java plugin which use NPAPI only
 443   // and don't depend on XPCOM.
 444   if (filename == kJavaPlugin1 || filename == kJavaPlugin2) {
 445     std::vector<base::FilePath::StringType> ver;
 446     base::SplitString(info.version, '.', &ver);
 447     int major, minor, update;
 448     if (ver.size() == 4 &&
 449         base::StringToInt(ver[0], &major) &&
 450         base::StringToInt(ver[1], &minor) &&
 451         base::StringToInt(ver[2], &update)) {
 452       if (major == 6 && minor == 0 && update < 120)
 453         return false;  // Java SE6 Update 11 or older.
 454     }
 455   }
 456
 457   // Special WMP handling:
 458   // If both the new and old WMP plugins exist, only load the new one.
 459   if (filename == kNewWMPPlugin) {
 460     for (size_t j = 0; j < plugins->size(); ++j) {
 461       if ((*plugins)[j].path.BaseName().value() == kOldWMPPlugin) {
 462         plugins->erase(plugins->begin() + j);
 463         break;
 464       }
 465     }
 466
 467   } else if (filename == kOldWMPPlugin) {
 468     for (size_t j = 0; j < plugins->size(); ++j) {
 469       if ((*plugins)[j].path.BaseName().value() == kNewWMPPlugin)
 470         return false;
 471     }
 472   }
 473
 474   base::FilePath plugin_path(info.path);
 475 #if defined(ARCH_CPU_X86_64)
 476   // The plugin in question could be a 32 bit plugin which we cannot load.
 477   if (IsValid32BitImage(base::MakeAbsoluteFilePath(plugin_path)))
 478     return false;
 479 #else
 480   // The plugin in question could be a 64 bit plugin which we cannot load.
 481   if (!IsValid32BitImage(base::MakeAbsoluteFilePath(plugin_path)))
 482     return false;
 483 #endif
 484   return true;
 485 }
 486
 487 }  // namespace content