Revert of Use UtilityProcessHost to patch files.

chrome/browser/component_updater/component_patcher_operation.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/component_updater/component_patcher_operation.h"
 
 #include <string>
 #include <vector>
 
-#include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/memory_mapped_file.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/memory/scoped_handle.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/component_updater/component_patcher.h"
 #include "chrome/browser/component_updater/component_updater_service.h"
-#include "chrome/common/chrome_utility_messages.h"
 #include "chrome/common/extensions/extension_constants.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/utility_process_host.h"
-#include "courgette/courgette.h"
-#include "courgette/third_party/bsdiff.h"
 #include "crypto/secure_hash.h"
 #include "crypto/sha2.h"
 #include "crypto/signature_verifier.h"
 #include "extensions/common/crx_file.h"
-#include "ipc/ipc_message_macros.h"
 #include "third_party/zlib/google/zip.h"
 
 using crypto::SecureHash;
 
 namespace component_updater {
 
 namespace {
 
 const char kInput[] = "input";
 const char kOp[] = "op";
 const char kOutput[] = "output";
 const char kPatch[] = "patch";
 const char kSha256[] = "sha256";
 
-// The integer offset disambiguates between overlapping error ranges.
-const int kCourgetteErrorOffset = 300;
-const int kBsdiffErrorOffset = 600;
-
-class CourgetteTraits : public DeltaUpdateOpPatchStrategy {
- public:
-  virtual int GetErrorOffset() const OVERRIDE;
-  virtual int GetSuccessCode() const OVERRIDE;
-  virtual scoped_ptr<IPC::Message> GetPatchMessage(
-      base::FilePath input_abs_path,
-      base::FilePath patch_abs_path,
-      base::FilePath output_abs_path) OVERRIDE;
-  virtual int Patch(base::FilePath input_abs_path,
-                    base::FilePath patch_abs_path,
-                    base::FilePath output_abs_path) OVERRIDE;
-};
-
-int CourgetteTraits::GetErrorOffset() const {
-  return kCourgetteErrorOffset;
-}
-
-int CourgetteTraits::GetSuccessCode() const {
-  return courgette::C_OK;
-}
-
-scoped_ptr<IPC::Message> CourgetteTraits::GetPatchMessage(
-    base::FilePath input_abs_path,
-    base::FilePath patch_abs_path,
-    base::FilePath output_abs_path) {
-  return scoped_ptr<IPC::Message>(
-      new ChromeUtilityMsg_PatchFileCourgette(input_abs_path,
-                                              patch_abs_path,
-                                              output_abs_path));
-}
-
-int CourgetteTraits::Patch(base::FilePath input_abs_path,
-                           base::FilePath patch_abs_path,
-                           base::FilePath output_abs_path) {
-  return courgette::ApplyEnsemblePatch(input_abs_path.value().c_str(),
-                                       patch_abs_path.value().c_str(),
-                                       output_abs_path.value().c_str());
-}
-
-class BsdiffTraits : public DeltaUpdateOpPatchStrategy {
- public:
-  virtual int GetErrorOffset() const OVERRIDE;
-  virtual int GetSuccessCode() const OVERRIDE;
-  virtual scoped_ptr<IPC::Message> GetPatchMessage(
-      base::FilePath input_abs_path,
-      base::FilePath patch_abs_path,
-      base::FilePath output_abs_path) OVERRIDE;
-  virtual int Patch(base::FilePath input_abs_path,
-                    base::FilePath patch_abs_path,
-                    base::FilePath output_abs_path) OVERRIDE;
-};
-
-int BsdiffTraits::GetErrorOffset() const {
-  return kBsdiffErrorOffset;
-}
-
-int BsdiffTraits::GetSuccessCode() const {
-  return courgette::OK;
-}
-
-scoped_ptr<IPC::Message> BsdiffTraits::GetPatchMessage(
-    base::FilePath input_abs_path,
-    base::FilePath patch_abs_path,
-    base::FilePath output_abs_path) {
-  return scoped_ptr<IPC::Message>(
-      new ChromeUtilityMsg_PatchFileBsdiff(input_abs_path,
-                                           patch_abs_path,
-                                           output_abs_path));
-}
-
-int BsdiffTraits::Patch(base::FilePath input_abs_path,
-                        base::FilePath patch_abs_path,
-                        base::FilePath output_abs_path) {
-  return courgette::ApplyBinaryPatch(input_abs_path,
-                                     patch_abs_path,
-                                     output_abs_path);
-}
-
 }  // namespace
 
-DeltaUpdateOpPatchStrategy::~DeltaUpdateOpPatchStrategy() {
-}
-
-DeltaUpdateOp* CreateDeltaUpdateOp(const std::string& operation) {
-  if (operation == "copy") {
+DeltaUpdateOp* CreateDeltaUpdateOp(base::DictionaryValue* command) {
+  std::string operation;
+  if (!command->GetString(kOp, &operation))
+    return NULL;
+  if (operation == "copy")
     return new DeltaUpdateOpCopy();
-  } else if (operation == "create") {
+  else if (operation == "create")
     return new DeltaUpdateOpCreate();
-  } else if (operation == "bsdiff") {
-    scoped_ptr<DeltaUpdateOpPatchStrategy> strategy(new BsdiffTraits());
-    return new DeltaUpdateOpPatch(strategy.Pass());
-  } else if (operation == "courgette") {
-    scoped_ptr<DeltaUpdateOpPatchStrategy> strategy(new CourgetteTraits());
-    return new DeltaUpdateOpPatch(strategy.Pass());
-  }
+  else if (operation == "bsdiff")
+    return new DeltaUpdateOpPatchBsdiff();
+  else if (operation == "courgette")
+    return new DeltaUpdateOpPatchCourgette();
   return NULL;
 }
 
-DeltaUpdateOp* CreateDeltaUpdateOp(const base::DictionaryValue& command) {
-  std::string operation;
-  if (!command.GetString(kOp, &operation))
-    return NULL;
-  return CreateDeltaUpdateOp(operation);
-}
-
-DeltaUpdateOp::DeltaUpdateOp() : in_process_(false) {}
+DeltaUpdateOp::DeltaUpdateOp() {}
 
 DeltaUpdateOp::~DeltaUpdateOp() {}
 
-void DeltaUpdateOp::Run(
-    const base::DictionaryValue* command_args,
-    const base::FilePath& input_dir,
-    const base::FilePath& unpack_dir,
-    ComponentInstaller* installer,
-    bool in_process,
-    const ComponentUnpacker::Callback& callback,
-    scoped_refptr<base::SequencedTaskRunner> task_runner) {
-  callback_ = callback;
-  in_process_ = in_process;
-  task_runner_ = task_runner;
+ComponentUnpacker::Error DeltaUpdateOp::Run(base::DictionaryValue* command_args,
+                                            const base::FilePath& input_dir,
+                                            const base::FilePath& unpack_dir,
+                                            ComponentPatcher* patcher,
+                                            ComponentInstaller* installer,
+                                            int* error) {
   std::string output_rel_path;
   if (!command_args->GetString(kOutput, &output_rel_path) ||
-      !command_args->GetString(kSha256, &output_sha256_)) {
-    DoneRunning(ComponentUnpacker::kDeltaBadCommands, 0);
-    return;
-  }
+      !command_args->GetString(kSha256, &output_sha256_))
+    return ComponentUnpacker::kDeltaBadCommands;
 
   output_abs_path_ = unpack_dir.Append(
       base::FilePath::FromUTF8Unsafe(output_rel_path));
   ComponentUnpacker::Error parse_result = DoParseArguments(
       command_args, input_dir, installer);
-  if (parse_result != ComponentUnpacker::kNone) {
-    DoneRunning(parse_result, 0);
-    return;
-  }
+  if (parse_result != ComponentUnpacker::kNone)
+    return parse_result;
 
   const base::FilePath parent = output_abs_path_.DirName();
   if (!base::DirectoryExists(parent)) {
-    if (!base::CreateDirectory(parent)) {
-      DoneRunning(ComponentUnpacker::kIoError, 0);
-      return;
-    }
+    if (!base::CreateDirectory(parent))
+      return ComponentUnpacker::kIoError;
   }
 
-  DoRun(base::Bind(&DeltaUpdateOp::DoneRunning,
-                   scoped_refptr<DeltaUpdateOp>(this)));
-}
+  ComponentUnpacker::Error run_result = DoRun(patcher, error);
+  if (run_result != ComponentUnpacker::kNone)
+    return run_result;
 
-void DeltaUpdateOp::DoneRunning(ComponentUnpacker::Error error,
-                                int extended_error) {
-  if (error == ComponentUnpacker::kNone)
-    error = CheckHash();
-  task_runner_->PostTask(FROM_HERE,
-                         base::Bind(callback_, error, extended_error));
-  callback_.Reset();
+  return CheckHash();
 }
 
 // Uses the hash as a checksum to confirm that the file now residing in the
 // output directory probably has the contents it should.
 ComponentUnpacker::Error DeltaUpdateOp::CheckHash() {
   std::vector<uint8> expected_hash;
   if (!base::HexStringToBytes(output_sha256_, &expected_hash) ||
       expected_hash.size() != crypto::kSHA256Length)
     return ComponentUnpacker::kDeltaVerificationFailure;
 
   base::MemoryMappedFile output_file_mmapped;
   if (!output_file_mmapped.Initialize(output_abs_path_))
     return ComponentUnpacker::kDeltaVerificationFailure;
 
   uint8 actual_hash[crypto::kSHA256Length] = {0};
   const scoped_ptr<SecureHash> hasher(SecureHash::Create(SecureHash::SHA256));
   hasher->Update(output_file_mmapped.data(), output_file_mmapped.length());
   hasher->Finish(actual_hash, sizeof(actual_hash));
   if (memcmp(actual_hash, &expected_hash[0], sizeof(actual_hash)))
     return ComponentUnpacker::kDeltaVerificationFailure;
 
   return ComponentUnpacker::kNone;
 }
 
-bool DeltaUpdateOp::InProcess() {
-  return in_process_;
-}
-
 DeltaUpdateOpCopy::DeltaUpdateOpCopy() {}
 
-DeltaUpdateOpCopy::~DeltaUpdateOpCopy() {}
-
 ComponentUnpacker::Error DeltaUpdateOpCopy::DoParseArguments(
-    const base::DictionaryValue* command_args,
+    base::DictionaryValue* command_args,
     const base::FilePath& input_dir,
     ComponentInstaller* installer) {
   std::string input_rel_path;
   if (!command_args->GetString(kInput, &input_rel_path))
     return ComponentUnpacker::kDeltaBadCommands;
 
   if (!installer->GetInstalledFile(input_rel_path, &input_abs_path_))
     return ComponentUnpacker::kDeltaMissingExistingFile;
 
   return ComponentUnpacker::kNone;
 }
 
-void DeltaUpdateOpCopy::DoRun(const ComponentUnpacker::Callback& callback) {
+ComponentUnpacker::Error DeltaUpdateOpCopy::DoRun(ComponentPatcher*,
+                                                  int* error) {
+  *error = 0;
   if (!base::CopyFile(input_abs_path_, output_abs_path_))
-    callback.Run(ComponentUnpacker::kDeltaOperationFailure, 0);
-  else
-    callback.Run(ComponentUnpacker::kNone, 0);
+    return ComponentUnpacker::kDeltaOperationFailure;
+
+  return ComponentUnpacker::kNone;
 }
 
 DeltaUpdateOpCreate::DeltaUpdateOpCreate() {}
 
-DeltaUpdateOpCreate::~DeltaUpdateOpCreate() {}
-
 ComponentUnpacker::Error DeltaUpdateOpCreate::DoParseArguments(
-    const base::DictionaryValue* command_args,
+    base::DictionaryValue* command_args,
     const base::FilePath& input_dir,
     ComponentInstaller* installer) {
   std::string patch_rel_path;
   if (!command_args->GetString(kPatch, &patch_rel_path))
     return ComponentUnpacker::kDeltaBadCommands;
 
   patch_abs_path_ = input_dir.Append(
       base::FilePath::FromUTF8Unsafe(patch_rel_path));
 
   return ComponentUnpacker::kNone;
 }
 
-void DeltaUpdateOpCreate::DoRun(const ComponentUnpacker::Callback& callback) {
+ComponentUnpacker::Error DeltaUpdateOpCreate::DoRun(ComponentPatcher*,
+                                                    int* error) {
+  *error = 0;
   if (!base::Move(patch_abs_path_, output_abs_path_))
-    callback.Run(ComponentUnpacker::kDeltaOperationFailure, 0);
-  else
-    callback.Run(ComponentUnpacker::kNone, 0);
+    return ComponentUnpacker::kDeltaOperationFailure;
+
+  return ComponentUnpacker::kNone;
 }
 
-DeltaUpdateOpPatchHost::DeltaUpdateOpPatchHost(
-    scoped_refptr<DeltaUpdateOpPatch> patcher) : patcher_(patcher) {
-}
+DeltaUpdateOpPatchBsdiff::DeltaUpdateOpPatchBsdiff() {}
 
-DeltaUpdateOpPatchHost::~DeltaUpdateOpPatchHost() {
-}
-
-void DeltaUpdateOpPatchHost::StartProcess(scoped_ptr<IPC::Message> message) {
-  // The DeltaUpdateOpPatchHost is not responsible for deleting the
-  // UtilityProcessHost object.
-  content::UtilityProcessHost* host = content::UtilityProcessHost::Create(
-      this, base::MessageLoopProxy::current().get());
-  host->DisableSandbox();
-  host->Send(message.get());
-}
-
-bool DeltaUpdateOpPatchHost::OnMessageReceived(const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(DeltaUpdateOpPatchHost, message)
-    IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_PatchFile_Succeeded,
-                        OnPatchSucceeded)
-    IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_PatchFile_Failed,
-                        OnPatchFailed)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void DeltaUpdateOpPatchHost::OnPatchSucceeded() {
-  patcher_->DonePatching(ComponentUnpacker::kNone, 0);
-  patcher_ = NULL;
-}
-
-void DeltaUpdateOpPatchHost::OnPatchFailed(int error_code) {
-  patcher_->DonePatching(ComponentUnpacker::kDeltaOperationFailure, error_code);
-  patcher_ = NULL;
-}
-
-void DeltaUpdateOpPatchHost::OnProcessCrashed(int exit_code) {
-  patcher_->DonePatching(ComponentUnpacker::kDeltaPatchProcessFailure,
-                        exit_code);
-  patcher_ = NULL;
-}
-
-DeltaUpdateOpPatch::DeltaUpdateOpPatch(
-    scoped_ptr<DeltaUpdateOpPatchStrategy> strategy) {
-  strategy_ = strategy.Pass();
-  host_ = new DeltaUpdateOpPatchHost(scoped_refptr<DeltaUpdateOpPatch>(this));
-}
-
-DeltaUpdateOpPatch::~DeltaUpdateOpPatch() {
-}
-
-ComponentUnpacker::Error DeltaUpdateOpPatch::DoParseArguments(
-    const base::DictionaryValue* command_args,
+ComponentUnpacker::Error DeltaUpdateOpPatchBsdiff::DoParseArguments(
+    base::DictionaryValue* command_args,
     const base::FilePath& input_dir,
     ComponentInstaller* installer) {
   std::string patch_rel_path;
   std::string input_rel_path;
   if (!command_args->GetString(kPatch, &patch_rel_path) ||
       !command_args->GetString(kInput, &input_rel_path))
     return ComponentUnpacker::kDeltaBadCommands;
 
   if (!installer->GetInstalledFile(input_rel_path, &input_abs_path_))
     return ComponentUnpacker::kDeltaMissingExistingFile;
 
   patch_abs_path_ = input_dir.Append(
       base::FilePath::FromUTF8Unsafe(patch_rel_path));
 
   return ComponentUnpacker::kNone;
 }
 
-void DeltaUpdateOpPatch::DoRun(const ComponentUnpacker::Callback& callback) {
-  callback_ = callback;
-  if (!InProcess()) {
-    content::BrowserThread::PostTask(
-        content::BrowserThread::IO,
-        FROM_HERE,
-        base::Bind(&DeltaUpdateOpPatchHost::StartProcess,
-                   host_,
-                   base::Passed(strategy_->GetPatchMessage(input_abs_path_,
-                                                           patch_abs_path_,
-                                                           output_abs_path_))));
-    return;
-  }
-  const int result = strategy_->Patch(input_abs_path_,
-                                      patch_abs_path_,
-                                      output_abs_path_);
-  if (result == strategy_->GetSuccessCode())
-    DonePatching(ComponentUnpacker::kNone, 0);
-  else
-    DonePatching(ComponentUnpacker::kDeltaOperationFailure, result);
+ComponentUnpacker::Error DeltaUpdateOpPatchBsdiff::DoRun(
+    ComponentPatcher* patcher,
+    int* error) {
+  *error = 0;
+  return patcher->Patch(ComponentPatcher::kPatchTypeBsdiff,
+                        input_abs_path_,
+                        patch_abs_path_,
+                        output_abs_path_,
+                        error);
 }
 
-void DeltaUpdateOpPatch::DonePatching(ComponentUnpacker::Error error,
-                                      int error_code) {
-  host_ = NULL;
-  if (error != ComponentUnpacker::kNone) {
-    error_code += strategy_->GetErrorOffset();
-  }
-  callback_.Run(error, error_code);
-  // The callback is no longer needed - it is best to release it in case it
-  // contains a reference to this object.
-  callback_.Reset();
+DeltaUpdateOpPatchCourgette::DeltaUpdateOpPatchCourgette() {}
+
+ComponentUnpacker::Error DeltaUpdateOpPatchCourgette::DoParseArguments(
+    base::DictionaryValue* command_args,
+    const base::FilePath& input_dir,
+    ComponentInstaller* installer) {
+  std::string patch_rel_path;
+  std::string input_rel_path;
+  if (!command_args->GetString(kPatch, &patch_rel_path) ||
+      !command_args->GetString(kInput, &input_rel_path))
+    return ComponentUnpacker::kDeltaBadCommands;
+
+  if (!installer->GetInstalledFile(input_rel_path, &input_abs_path_))
+    return ComponentUnpacker::kDeltaMissingExistingFile;
+
+  patch_abs_path_ = input_dir.Append(
+      base::FilePath::FromUTF8Unsafe(patch_rel_path));
+
+  return ComponentUnpacker::kNone;
+}
+
+ComponentUnpacker::Error DeltaUpdateOpPatchCourgette::DoRun(
+    ComponentPatcher* patcher,
+    int* error) {
+  *error = 0;
+  return patcher->Patch(ComponentPatcher::kPatchTypeCourgette,
+                        input_abs_path_,
+                        patch_abs_path_,
+                        output_abs_path_,
+                        error);
 }
 
 }  // namespace component_updater