chrome/browser/component_updater/swiftshader_component_installer.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 "chrome/browser/component_updater/swiftshader_component_installer.h"
   6
   7 #include <stdint.h>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/base_paths.h"
  12 #include "base/bind.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/files/file_enumerator.h"
  15 #include "base/files/file_path.h"
  16 #include "base/files/file_util.h"
  17 #include "base/logging.h"
  18 #include "base/path_service.h"
  19 #include "base/strings/string_util.h"
  20 #include "base/values.h"
  21 #include "components/component_updater/component_updater_paths.h"
  22 #include "components/component_updater/component_updater_service.h"
  23 #include "components/update_client/update_client.h"
  24 #include "content/public/browser/browser_thread.h"
  25 #include "content/public/browser/gpu_data_manager.h"
  26 #include "content/public/browser/gpu_data_manager_observer.h"
  27 #include "gpu/config/gpu_feature_type.h"
  28
  29 using content::BrowserThread;
  30 using content::GpuDataManager;
  31
  32 namespace component_updater {
  33
  34 namespace {
  35
  36 // CRX hash. The extension id is: nhfgdggnnopgbfdlpeoalgcjdgfafocg.
  37 const uint8_t kSha2Hash[] = {0xd7, 0x56, 0x36, 0x6d, 0xde, 0xf6, 0x15, 0x3b,
  38                              0xf4, 0xe0, 0xb6, 0x29, 0x36, 0x50, 0x5e, 0x26,
  39                              0xbd, 0x77, 0x8b, 0x8e, 0x35, 0xc2, 0x7e, 0x43,
  40                              0x52, 0x47, 0x62, 0xed, 0x12, 0xca, 0xcc, 0x6a};
  41
  42 // File name of the internal SwiftShader plugin on different platforms.
  43 const base::FilePath::CharType kSwiftShaderEglName[] =
  44     FILE_PATH_LITERAL("libegl.dll");
  45 const base::FilePath::CharType kSwiftShaderGlesName[] =
  46     FILE_PATH_LITERAL("libglesv2.dll");
  47
  48 const char kSwiftShaderManifestName[] = "SwiftShader";
  49
  50 // If we don't have a SwiftShader component, this is the version we claim.
  51 const char kNullVersion[] = "0.0.0.0";
  52
  53 // The base directory on windows looks like:
  54 // <profile>\AppData\Local\Google\Chrome\User Data\SwiftShader\.
  55 base::FilePath GetSwiftShaderBaseDirectory() {
  56   base::FilePath result;
  57   if (!PathService::Get(DIR_SWIFT_SHADER, &result))
  58     NOTREACHED() << "Couldn't get SwiftShader directory.";
  59   return result;
  60 }
  61
  62 // SwiftShader has version encoded in the path itself
  63 // so we need to enumerate the directories to find the full path.
  64 // On success it returns something like:
  65 // <profile>\AppData\Local\Google\Chrome\User Data\SwiftShader\10.3.44.555\.
  66 bool GetLatestSwiftShaderDirectory(base::FilePath* result,
  67                                    Version* latest,
  68                                    std::vector<base::FilePath>* older_dirs) {
  69   base::FilePath base_dir = GetSwiftShaderBaseDirectory();
  70   bool found = false;
  71   base::FileEnumerator file_enumerator(
  72       base_dir, false, base::FileEnumerator::DIRECTORIES);
  73   for (base::FilePath path = file_enumerator.Next(); !path.value().empty();
  74        path = file_enumerator.Next()) {
  75     Version version(path.BaseName().MaybeAsASCII());
  76     if (!version.IsValid())
  77       continue;
  78     if (version.CompareTo(*latest) > 0 &&
  79         base::PathExists(path.Append(kSwiftShaderEglName)) &&
  80         base::PathExists(path.Append(kSwiftShaderGlesName))) {
  81       if (found && older_dirs)
  82         older_dirs->push_back(*result);
  83       *latest = version;
  84       *result = path;
  85       found = true;
  86     } else {
  87       if (older_dirs)
  88         older_dirs->push_back(path);
  89     }
  90   }
  91   return found;
  92 }
  93
  94 void RegisterSwiftShaderWithChrome(const base::FilePath& path) {
  95   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  96   GpuDataManager::GetInstance()->RegisterSwiftShaderPath(path);
  97 }
  98
  99 class SwiftShaderComponentInstaller : public update_client::CrxInstaller {
 100  public:
 101   explicit SwiftShaderComponentInstaller(const Version& version);
 102
 103   // ComponentInstaller implementation:
 104   void OnUpdateError(int error) override;
 105
 106   bool Install(const base::DictionaryValue& manifest,
 107                const base::FilePath& unpack_path) override;
 108
 109   bool GetInstalledFile(const std::string& file,
 110                         base::FilePath* installed_file) override;
 111
 112   bool Uninstall() override;
 113
 114  private:
 115   ~SwiftShaderComponentInstaller() override {}
 116
 117   Version current_version_;
 118 };
 119
 120 SwiftShaderComponentInstaller::SwiftShaderComponentInstaller(
 121     const Version& version)
 122     : current_version_(version) {
 123   DCHECK(version.IsValid());
 124 }
 125
 126 void SwiftShaderComponentInstaller::OnUpdateError(int error) {
 127   NOTREACHED() << "SwiftShader update error: " << error;
 128 }
 129
 130 bool SwiftShaderComponentInstaller::Install(
 131     const base::DictionaryValue& manifest,
 132     const base::FilePath& unpack_path) {
 133   std::string name;
 134   manifest.GetStringASCII("name", &name);
 135   if (name != kSwiftShaderManifestName)
 136     return false;
 137   std::string proposed_version;
 138   manifest.GetStringASCII("version", &proposed_version);
 139   Version version(proposed_version.c_str());
 140   if (!version.IsValid())
 141     return false;
 142   if (current_version_.CompareTo(version) >= 0)
 143     return false;
 144   if (!base::PathExists(unpack_path.Append(kSwiftShaderEglName)) ||
 145       !base::PathExists(unpack_path.Append(kSwiftShaderGlesName)))
 146     return false;
 147   // Passed the basic tests. Time to install it.
 148   base::FilePath path =
 149       GetSwiftShaderBaseDirectory().AppendASCII(version.GetString());
 150   if (base::PathExists(path))
 151     return false;
 152   if (!base::Move(unpack_path, path))
 153     return false;
 154   // Installation is done. Now tell the rest of chrome.
 155   current_version_ = version;
 156   BrowserThread::PostTask(BrowserThread::UI,
 157                           FROM_HERE,
 158                           base::Bind(&RegisterSwiftShaderWithChrome, path));
 159   return true;
 160 }
 161
 162 bool SwiftShaderComponentInstaller::GetInstalledFile(
 163     const std::string& file,
 164     base::FilePath* installed_file) {
 165   return false;
 166 }
 167
 168 bool SwiftShaderComponentInstaller::Uninstall() {
 169   return false;
 170 }
 171
 172 void FinishSwiftShaderUpdateRegistration(ComponentUpdateService* cus,
 173                                          const Version& version) {
 174   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 175
 176   update_client::CrxComponent swiftshader;
 177   swiftshader.name = "Swift Shader";
 178   swiftshader.installer = new SwiftShaderComponentInstaller(version);
 179   swiftshader.version = version;
 180   swiftshader.pk_hash.assign(kSha2Hash, &kSha2Hash[sizeof(kSha2Hash)]);
 181   if (!cus->RegisterComponent(swiftshader)) {
 182     NOTREACHED() << "SwiftShader component registration fail";
 183   }
 184 }
 185
 186 class UpdateChecker : public content::GpuDataManagerObserver {
 187  public:
 188   explicit UpdateChecker(ComponentUpdateService* cus);
 189
 190   void OnGpuInfoUpdate() override;
 191
 192  private:
 193   ComponentUpdateService* cus_;
 194 };
 195
 196 UpdateChecker::UpdateChecker(ComponentUpdateService* cus) : cus_(cus) {
 197 }
 198
 199 void UpdateChecker::OnGpuInfoUpdate() {
 200   GpuDataManager* gpu_data_manager = GpuDataManager::GetInstance();
 201
 202   if (!gpu_data_manager->GpuAccessAllowed(NULL) ||
 203       gpu_data_manager->IsFeatureBlacklisted(gpu::GPU_FEATURE_TYPE_WEBGL) ||
 204       gpu_data_manager->ShouldUseSwiftShader()) {
 205     gpu_data_manager->RemoveObserver(this);
 206     DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 207     base::FilePath path = GetSwiftShaderBaseDirectory();
 208
 209     Version version(kNullVersion);
 210     GetLatestSwiftShaderDirectory(&path, &version, NULL);
 211
 212     BrowserThread::PostTask(
 213         BrowserThread::UI,
 214         FROM_HERE,
 215         base::Bind(&FinishSwiftShaderUpdateRegistration, cus_, version));
 216   }
 217 }
 218
 219 #if defined(ENABLE_SWIFTSHADER)
 220
 221 // Check if there already is a version of swiftshader installed,
 222 // and if so register it.
 223 void RegisterSwiftShaderPath(ComponentUpdateService* cus) {
 224   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 225   base::FilePath path = GetSwiftShaderBaseDirectory();
 226   if (!base::PathExists(path)) {
 227     if (!base::CreateDirectory(path)) {
 228       NOTREACHED() << "Could not create SwiftShader directory.";
 229       return;
 230     }
 231   }
 232
 233   Version version(kNullVersion);
 234   std::vector<base::FilePath> older_dirs;
 235   if (GetLatestSwiftShaderDirectory(&path, &version, &older_dirs))
 236     BrowserThread::PostTask(BrowserThread::UI,
 237                             FROM_HERE,
 238                             base::Bind(&RegisterSwiftShaderWithChrome, path));
 239
 240   UpdateChecker* update_checker = new UpdateChecker(cus);
 241   GpuDataManager::GetInstance()->AddObserver(update_checker);
 242   update_checker->OnGpuInfoUpdate();
 243   // We leak update_checker here, because it has to stick around for the life
 244   // of the GpuDataManager.
 245
 246   // Remove older versions of SwiftShader.
 247   for (std::vector<base::FilePath>::iterator iter = older_dirs.begin();
 248        iter != older_dirs.end();
 249        ++iter) {
 250     base::DeleteFile(*iter, true);
 251   }
 252 }
 253
 254 #endif  // ENABLE_SWIFTSHADER
 255
 256 }  // namespace
 257
 258 void RegisterSwiftShaderComponent(ComponentUpdateService* cus) {
 259 #if defined(ENABLE_SWIFTSHADER)
 260   BrowserThread::PostTask(BrowserThread::FILE,
 261                           FROM_HERE,
 262                           base::Bind(&RegisterSwiftShaderPath, cus));
 263 #endif
 264 }
 265
 266 }  // namespace component_updater