1 // Copyright 2013 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.
6 #include "base/file_util.h"
7 #include "base/files/file_enumerator.h"
8 #include "base/files/file_path.h"
9 #include "base/values.h"
10 #include "base/version.h"
11 // TODO(ddorwin): Find a better place for ReadManifest.
12 #include "chrome/browser/component_updater/component_unpacker.h"
13 #include "chrome/browser/component_updater/default_component_installer.h"
14 #include "content/public/browser/browser_thread.h"
16 namespace component_updater {
19 // Version "0" corresponds to no installed version. By the server's conventions,
20 // we represent it as a dotted quad.
21 const char kNullVersion[] = "0.0.0.0";
24 ComponentInstallerTraits::~ComponentInstallerTraits() {
27 DefaultComponentInstaller::DefaultComponentInstaller(
28 scoped_ptr<ComponentInstallerTraits> installer_traits)
29 : current_version_(kNullVersion) {
30 installer_traits_ = installer_traits.Pass();
33 DefaultComponentInstaller::~DefaultComponentInstaller() {
36 void DefaultComponentInstaller::Register(ComponentUpdateService* cus) {
37 if (!installer_traits_) {
38 NOTREACHED() << "A DefaultComponentInstaller has been created but "
39 << "has no installer traits.";
42 content::BrowserThread::PostBlockingPoolTask(
44 base::Bind(&DefaultComponentInstaller::StartRegistration,
45 base::Unretained(this),
49 void DefaultComponentInstaller::OnUpdateError(int error) {
50 NOTREACHED() << "Component update error: " << error;
53 bool DefaultComponentInstaller::InstallHelper(
54 const base::DictionaryValue& manifest,
55 const base::FilePath& unpack_path,
56 const base::FilePath& install_path) {
57 if (!base::Move(unpack_path, install_path))
59 if (!installer_traits_->OnCustomInstall(manifest, install_path))
61 if (!installer_traits_->VerifyInstallation(install_path))
66 bool DefaultComponentInstaller::Install(const base::DictionaryValue& manifest,
67 const base::FilePath& unpack_path) {
68 std::string manifest_version;
69 manifest.GetStringASCII("version", &manifest_version);
70 base::Version version(manifest_version.c_str());
71 if (!version.IsValid())
73 if (current_version_.CompareTo(version) > 0)
75 base::FilePath install_path =
76 installer_traits_->GetBaseDirectory().AppendASCII(version.GetString());
77 if (base::PathExists(install_path)) {
78 if (!base::DeleteFile(install_path, true))
81 if (!InstallHelper(manifest, unpack_path, install_path)) {
82 base::DeleteFile(install_path, true);
85 current_version_ = version;
86 // TODO(ddorwin): Change the parameter to scoped_ptr<base::DictionaryValue>
87 // so we can avoid this DeepCopy.
88 current_manifest_.reset(manifest.DeepCopy());
89 scoped_ptr<base::DictionaryValue> manifest_copy(
90 current_manifest_->DeepCopy());
91 content::BrowserThread::PostTask(
92 content::BrowserThread::UI, FROM_HERE,
93 base::Bind(&ComponentInstallerTraits::ComponentReady,
94 base::Unretained(installer_traits_.get()),
96 GetInstallDirectory(),
97 base::Passed(&manifest_copy)));
101 bool DefaultComponentInstaller::GetInstalledFile(
102 const std::string& file,
103 base::FilePath* installed_file) {
104 if (current_version_.Equals(base::Version(kNullVersion)))
105 return false; // No component has been installed yet.
108 installer_traits_->GetBaseDirectory()
109 .AppendASCII(current_version_.GetString()).AppendASCII(file);
113 void DefaultComponentInstaller::StartRegistration(
114 ComponentUpdateService* cus) {
115 base::FilePath base_dir = installer_traits_->GetBaseDirectory();
116 if (!base::PathExists(base_dir) &&
117 !base::CreateDirectory(base_dir)) {
118 NOTREACHED() << "Could not create the base directory for "
119 << installer_traits_->GetName() << " ("
120 << base_dir.MaybeAsASCII() << ").";
124 base::FilePath latest_dir;
125 base::Version latest_version(kNullVersion);
126 std::vector<base::FilePath> older_dirs;
128 base::FileEnumerator file_enumerator(
129 base_dir, false, base::FileEnumerator::DIRECTORIES);
130 for (base::FilePath path = file_enumerator.Next();
131 !path.value().empty();
132 path = file_enumerator.Next()) {
133 base::Version version(path.BaseName().MaybeAsASCII());
134 // Ignore folders that don't have valid version names. These folders are not
135 // managed by component installer so do not try to remove them.
136 if (!version.IsValid())
138 if (!installer_traits_->VerifyInstallation(path)) {
139 older_dirs.push_back(path);
143 if (version.CompareTo(latest_version) > 0) {
144 older_dirs.push_back(latest_dir);
146 latest_version = version;
148 older_dirs.push_back(path);
152 latest_version = version;
158 current_version_ = latest_version;
159 // TODO(ddorwin): Remove these members and pass them directly to
160 // FinishRegistration().
161 base::ReadFileToString(latest_dir.AppendASCII("manifest.fingerprint"),
162 ¤t_fingerprint_);
163 current_manifest_= ReadManifest(latest_dir);
164 if (!current_manifest_) {
165 DLOG(ERROR) << "Failed to read manifest for "
166 << installer_traits_->GetName() << " ("
167 << base_dir.MaybeAsASCII() << ").";
172 // Remove older versions of the component. None should be in use during
174 for (std::vector<base::FilePath>::iterator iter = older_dirs.begin();
175 iter != older_dirs.end(); ++iter) {
176 base::DeleteFile(*iter, true);
179 content::BrowserThread::PostTask(
180 content::BrowserThread::UI, FROM_HERE,
181 base::Bind(&DefaultComponentInstaller::FinishRegistration,
182 base::Unretained(this),
186 base::FilePath DefaultComponentInstaller::GetInstallDirectory() {
187 return installer_traits_->GetBaseDirectory()
188 .AppendASCII(current_version_.GetString());
191 void DefaultComponentInstaller::FinishRegistration(
192 ComponentUpdateService* cus) {
193 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
194 if (installer_traits_->CanAutoUpdate()) {
196 crx.name = installer_traits_->GetName();
197 crx.installer = this;
198 crx.version = current_version_;
199 crx.fingerprint = current_fingerprint_;
200 installer_traits_->GetHash(&crx.pk_hash);
201 ComponentUpdateService::Status status = cus->RegisterComponent(crx);
202 if (status != ComponentUpdateService::kOk &&
203 status != ComponentUpdateService::kReplaced) {
204 NOTREACHED() << "Component registration failed for "
205 << installer_traits_->GetName();
210 if (current_version_.CompareTo(base::Version(kNullVersion)) > 0) {
211 scoped_ptr<base::DictionaryValue> manifest_copy(
212 current_manifest_->DeepCopy());
213 installer_traits_->ComponentReady(
215 GetInstallDirectory(),
216 manifest_copy.Pass());
220 } // namespace component_updater