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