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chromium / chromium / src / 8707fef05b454ec373cb05d8a9f815780281ad2b / . / chrome / installer / util / shell_util.cc
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// Copyright (c) 2012 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.
//
// This file defines functions that integrate Chrome in Windows shell. These
// functions can be used by Chrome as well as Chrome installer. All of the
// work is done by the local functions defined in anonymous namespace in
// this class.
#include "chrome/installer/util/shell_util.h"
#include <windows.h>
#include <shlobj.h>
#include <shobjidl.h>
#include <limits>
#include <string>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/md5.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "base/path_service.h"
#include "base/strings/string16.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/synchronization/cancellation_flag.h"
#include "base/values.h"
#include "base/win/registry.h"
#include "base/win/scoped_co_mem.h"
#include "base/win/scoped_comptr.h"
#include "base/win/shortcut.h"
#include "base/win/win_util.h"
#include "base/win/windows_version.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/installer/util/browser_distribution.h"
#include "chrome/installer/util/install_util.h"
#include "chrome/installer/util/installer_util_strings.h"
#include "chrome/installer/util/l10n_string_util.h"
#include "chrome/installer/util/master_preferences.h"
#include "chrome/installer/util/master_preferences_constants.h"
#include "chrome/installer/util/util_constants.h"
#include "chrome/installer/util/work_item.h"
using base::win::RegKey;
namespace {
// An enum used to tell QuickIsChromeRegistered() which level of registration
// the caller wants to confirm.
enum RegistrationConfirmationLevel {
// Only look for Chrome's ProgIds.
// This is sufficient when we are trying to determine the suffix of the
// currently running Chrome as shell integration registrations might not be
// present.
CONFIRM_PROGID_REGISTRATION = 0,
// Confirm that Chrome is fully integrated with Windows (i.e. registered with
// Defaut Programs). These registrations can be in HKCU as of Windows 8.
// Note: Shell registration implies ProgId registration.
CONFIRM_SHELL_REGISTRATION,
// Same as CONFIRM_SHELL_REGISTRATION, but only look in HKLM (used when
// uninstalling to know whether elevation is required to clean up the
// registry).
CONFIRM_SHELL_REGISTRATION_IN_HKLM,
};
const wchar_t kReinstallCommand[] = L"ReinstallCommand";
// Returns true if Chrome Metro is supported on this OS (Win 8 8370 or greater).
// TODO(gab): Change this to a simple check for Win 8 once old Win8 builds
// become irrelevant.
bool IsChromeMetroSupported() {
OSVERSIONINFOEX min_version_info = {};
min_version_info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
min_version_info.dwMajorVersion = 6;
min_version_info.dwMinorVersion = 2;
min_version_info.dwBuildNumber = 8370;
min_version_info.wServicePackMajor = 0;
min_version_info.wServicePackMinor = 0;
DWORDLONG condition_mask = 0;
VER_SET_CONDITION(condition_mask, VER_MAJORVERSION, VER_GREATER_EQUAL);
VER_SET_CONDITION(condition_mask, VER_MINORVERSION, VER_GREATER_EQUAL);
VER_SET_CONDITION(condition_mask, VER_BUILDNUMBER, VER_GREATER_EQUAL);
VER_SET_CONDITION(condition_mask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
VER_SET_CONDITION(condition_mask, VER_SERVICEPACKMINOR, VER_GREATER_EQUAL);
DWORD type_mask = VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER |
VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR;
return VerifyVersionInfo(&min_version_info, type_mask, condition_mask) != 0;
}
// Returns the current (or installed) browser's ProgId (e.g.
// "ChromeHTML|suffix|").
// |suffix| can be the empty string.
base::string16 GetBrowserProgId(const base::string16& suffix) {
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
base::string16 chrome_html(dist->GetBrowserProgIdPrefix());
chrome_html.append(suffix);
// ProgIds cannot be longer than 39 characters.
// Ref: http://msdn.microsoft.com/en-us/library/aa911706.aspx.
// Make all new registrations comply with this requirement (existing
// registrations must be preserved).
base::string16 new_style_suffix;
if (ShellUtil::GetUserSpecificRegistrySuffix(&new_style_suffix) &&
suffix == new_style_suffix && chrome_html.length() > 39) {
NOTREACHED();
chrome_html.erase(39);
}
return chrome_html;
}
// This class is used to initialize and cache a base 32 encoding of the md5 hash
// of this user's sid preceded by a dot.
// This is guaranteed to be unique on the machine and 27 characters long
// (including the '.').
// This is then meant to be used as a suffix on all registrations that may
// conflict with another user-level Chrome install.
class UserSpecificRegistrySuffix {
public:
// All the initialization is done in the constructor to be able to build the
// suffix in a thread-safe manner when used in conjunction with a
// LazyInstance.
UserSpecificRegistrySuffix();
// Sets |suffix| to the pre-computed suffix cached in this object.
// Returns true unless the initialization originally failed.
bool GetSuffix(base::string16* suffix);
private:
base::string16 suffix_;
DISALLOW_COPY_AND_ASSIGN(UserSpecificRegistrySuffix);
}; // class UserSpecificRegistrySuffix
UserSpecificRegistrySuffix::UserSpecificRegistrySuffix() {
base::string16 user_sid;
if (!base::win::GetUserSidString(&user_sid)) {
NOTREACHED();
return;
}
COMPILE_ASSERT(sizeof(base::MD5Digest) == 16, size_of_MD5_not_as_expected_);
base::MD5Digest md5_digest;
std::string user_sid_ascii(base::UTF16ToASCII(user_sid));
base::MD5Sum(user_sid_ascii.c_str(), user_sid_ascii.length(), &md5_digest);
const base::string16 base32_md5(
ShellUtil::ByteArrayToBase32(md5_digest.a, arraysize(md5_digest.a)));
// The value returned by the base32 algorithm above must never change and
// must always be 26 characters long (i.e. if someone ever moves this to
// base and implements the full base32 algorithm (i.e. with appended '='
// signs in the output), they must provide a flag to allow this method to
// still request the output with no appended '=' signs).
DCHECK_EQ(base32_md5.length(), 26U);
suffix_.reserve(base32_md5.length() + 1);
suffix_.assign(1, L'.');
suffix_.append(base32_md5);
}
bool UserSpecificRegistrySuffix::GetSuffix(base::string16* suffix) {
if (suffix_.empty()) {
NOTREACHED();
return false;
}
suffix->assign(suffix_);
return true;
}
// This class represents a single registry entry. The objective is to
// encapsulate all the registry entries required for registering Chrome at one
// place. This class can not be instantiated outside the class and the objects
// of this class type can be obtained only by calling a static method of this
// class.
class RegistryEntry {
public:
// A bit-field enum of places to look for this key in the Windows registry.
enum LookForIn {
LOOK_IN_HKCU = 1 << 0,
LOOK_IN_HKLM = 1 << 1,
LOOK_IN_HKCU_THEN_HKLM = LOOK_IN_HKCU | LOOK_IN_HKLM,
};
// Details about a Windows application, to be entered into the registry for
// the purpose of file associations.
struct ApplicationInfo {
ApplicationInfo() : file_type_icon_index(0), application_icon_index(0) {}
// The ProgId used by Windows for file associations with this application.
// Must not be empty or start with a '.'.
base::string16 prog_id;
// The friendly name, and the path of the icon that will be used for files
// of these types when associated with this application by default. (They
// are NOT the name/icon that will represent the application under the Open
// With menu.)
base::string16 file_type_name;
base::FilePath file_type_icon_path;
int file_type_icon_index;
// The command to execute when opening a file via this association. It
// should contain "%1" (to tell Windows to pass the filename as an
// argument).
// TODO(mgiuca): |command_line| should be a base::CommandLine.
base::string16 command_line;
// The AppUserModelId used by Windows 8 for this application. Distinct from
// |prog_id|.
base::string16 app_id;
// User-visible details about this application. Any of these may be empty.
base::string16 application_name;
base::FilePath application_icon_path;
int application_icon_index;
base::string16 application_description;
base::string16 publisher_name;
// The CLSID for the application's DelegateExecute handler. May be empty.
base::string16 delegate_clsid;
};
// Returns the Windows browser client registration key for Chrome. For
// example: "Software\Clients\StartMenuInternet\Chromium[.user]". Strictly
// speaking, we should use the name of the executable (e.g., "chrome.exe"),
// but that ship has sailed. The cost of switching now is re-prompting users
// to make Chrome their default browser, which isn't polite. |suffix| is the
// user-specific registration suffix; see GetUserSpecificDefaultBrowserSuffix
// in shell_util.h for details.
static base::string16 GetBrowserClientKey(BrowserDistribution* dist,
const base::string16& suffix) {
DCHECK(suffix.empty() || suffix[0] == L'.');
return base::string16(ShellUtil::kRegStartMenuInternet)
.append(1, L'\\')
.append(dist->GetBaseAppName())
.append(suffix);
}
// Returns the Windows Default Programs capabilities key for Chrome. For
// example:
// "Software\Clients\StartMenuInternet\Chromium[.user]\Capabilities".
static base::string16 GetCapabilitiesKey(BrowserDistribution* dist,
const base::string16& suffix) {
return GetBrowserClientKey(dist, suffix).append(L"\\Capabilities");
}
// This method returns a list of all the registry entries that
// are needed to register this installation's ProgId and AppId.
// These entries need to be registered in HKLM prior to Win8.
static void GetChromeProgIdEntries(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& suffix,
ScopedVector<RegistryEntry>* entries) {
int chrome_icon_index =
dist->GetIconIndex(BrowserDistribution::SHORTCUT_CHROME);
ApplicationInfo app_info;
app_info.prog_id = GetBrowserProgId(suffix);
app_info.file_type_name = dist->GetBrowserProgIdDesc();
// File types associated with Chrome are just given the Chrome icon.
app_info.file_type_icon_path = chrome_exe;
app_info.file_type_icon_index = chrome_icon_index;
app_info.command_line = ShellUtil::GetChromeShellOpenCmd(chrome_exe);
// For user-level installs: entries for the app id will be in HKCU; thus we
// do not need a suffix on those entries.
app_info.app_id = ShellUtil::GetBrowserModelId(
dist, InstallUtil::IsPerUserInstall(chrome_exe));
// The command to execute when opening this application via the Metro UI.
base::string16 delegate_command(
ShellUtil::GetChromeDelegateCommand(chrome_exe));
bool set_delegate_execute =
IsChromeMetroSupported() &&
dist->GetCommandExecuteImplClsid(&app_info.delegate_clsid);
// TODO(grt): http://crbug.com/75152 Write a reference to a localized
// resource for name, description, and company.
app_info.application_name = dist->GetDisplayName();
app_info.application_icon_path = chrome_exe;
app_info.application_icon_index = chrome_icon_index;
app_info.application_description = dist->GetAppDescription();
app_info.publisher_name = dist->GetPublisherName();
GetProgIdEntries(app_info, entries);
// DelegateExecute ProgId. Needed for Chrome Metro in Windows 8. This is
// only needed for registring a web browser, not for general associations.
if (set_delegate_execute) {
base::string16 model_id_shell(ShellUtil::kRegClasses);
model_id_shell.push_back(base::FilePath::kSeparators[0]);
model_id_shell.append(app_info.app_id);
model_id_shell.append(ShellUtil::kRegExePath);
model_id_shell.append(ShellUtil::kRegShellPath);
// <root hkey>\Software\Classes\<app_id>\.exe\shell @=open
entries->push_back(new RegistryEntry(model_id_shell,
ShellUtil::kRegVerbOpen));
// Each of Chrome's shortcuts has an appid; which, as of Windows 8, is
// registered to handle some verbs. This registration has the side-effect
// that these verbs now show up in the shortcut's context menu. We
// mitigate this side-effect by making the context menu entries
// user readable/localized strings. See relevant MSDN article:
// http://msdn.microsoft.com/en-US/library/windows/desktop/cc144171.aspx
const struct {
const wchar_t* verb;
int name_id;
} verbs[] = {
{ ShellUtil::kRegVerbOpen, -1 },
{ ShellUtil::kRegVerbOpenNewWindow, IDS_SHORTCUT_NEW_WINDOW_BASE },
};
for (size_t i = 0; i < arraysize(verbs); ++i) {
base::string16 sub_path(model_id_shell);
sub_path.push_back(base::FilePath::kSeparators[0]);
sub_path.append(verbs[i].verb);
// <root hkey>\Software\Classes\<app_id>\.exe\shell\<verb>
if (verbs[i].name_id != -1) {
// TODO(grt): http://crbug.com/75152 Write a reference to a localized
// resource.
base::string16 verb_name(
installer::GetLocalizedString(verbs[i].name_id));
entries->push_back(new RegistryEntry(sub_path, verb_name.c_str()));
}
entries->push_back(new RegistryEntry(
sub_path, L"CommandId", L"Browser.Launch"));
sub_path.push_back(base::FilePath::kSeparators[0]);
sub_path.append(ShellUtil::kRegCommand);
// <root hkey>\Software\Classes\<app_id>\.exe\shell\<verb>\command
entries->push_back(new RegistryEntry(sub_path, delegate_command));
entries->push_back(new RegistryEntry(
sub_path, ShellUtil::kRegDelegateExecute, app_info.delegate_clsid));
}
}
}
// Gets the registry entries to register an application in the Windows
// registry. |app_info| provides all of the information needed.
static void GetProgIdEntries(const ApplicationInfo& app_info,
ScopedVector<RegistryEntry>* entries) {
// Basic sanity checks.
DCHECK(!app_info.prog_id.empty());
DCHECK_NE(L'.', app_info.prog_id[0]);
// File association ProgId
base::string16 prog_id_path(ShellUtil::kRegClasses);
prog_id_path.push_back(base::FilePath::kSeparators[0]);
prog_id_path.append(app_info.prog_id);
entries->push_back(
new RegistryEntry(prog_id_path, app_info.file_type_name));
entries->push_back(new RegistryEntry(
prog_id_path + ShellUtil::kRegDefaultIcon,
ShellUtil::FormatIconLocation(app_info.file_type_icon_path,
app_info.file_type_icon_index)));
entries->push_back(new RegistryEntry(
prog_id_path + ShellUtil::kRegShellOpen, app_info.command_line));
if (!app_info.delegate_clsid.empty()) {
entries->push_back(
new RegistryEntry(prog_id_path + ShellUtil::kRegShellOpen,
ShellUtil::kRegDelegateExecute,
app_info.delegate_clsid));
}
// The following entries are required as of Windows 8, but do not
// depend on the DelegateExecute verb handler being set.
if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
if (!app_info.app_id.empty()) {
entries->push_back(new RegistryEntry(
prog_id_path, ShellUtil::kRegAppUserModelId, app_info.app_id));
}
// Add \Software\Classes\<prog_id>\Application entries
base::string16 application_path(prog_id_path +
ShellUtil::kRegApplication);
if (!app_info.app_id.empty()) {
entries->push_back(new RegistryEntry(
application_path, ShellUtil::kRegAppUserModelId, app_info.app_id));
}
if (!app_info.application_icon_path.empty()) {
entries->push_back(new RegistryEntry(
application_path,
ShellUtil::kRegApplicationIcon,
ShellUtil::FormatIconLocation(app_info.application_icon_path,
app_info.application_icon_index)));
}
if (!app_info.application_name.empty()) {
entries->push_back(new RegistryEntry(application_path,
ShellUtil::kRegApplicationName,
app_info.application_name));
}
if (!app_info.application_description.empty()) {
entries->push_back(
new RegistryEntry(application_path,
ShellUtil::kRegApplicationDescription,
app_info.application_description));
}
if (!app_info.publisher_name.empty()) {
entries->push_back(new RegistryEntry(application_path,
ShellUtil::kRegApplicationCompany,
app_info.publisher_name));
}
}
}
// This method returns a list of the registry entries needed to declare a
// capability of handling a protocol on Windows.
static void GetProtocolCapabilityEntries(
BrowserDistribution* dist,
const base::string16& suffix,
const base::string16& protocol,
ScopedVector<RegistryEntry>* entries) {
entries->push_back(new RegistryEntry(
GetCapabilitiesKey(dist, suffix).append(L"\\URLAssociations"),
protocol, GetBrowserProgId(suffix)));
}
// This method returns a list of the registry entries required to register
// this installation in "RegisteredApplications" on Windows (to appear in
// Default Programs, StartMenuInternet, etc.).
// These entries need to be registered in HKLM prior to Win8.
// If |suffix| is not empty, these entries are guaranteed to be unique on this
// machine.
static void GetShellIntegrationEntries(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& suffix,
ScopedVector<RegistryEntry>* entries) {
const base::string16 icon_path(
ShellUtil::FormatIconLocation(
chrome_exe,
dist->GetIconIndex(BrowserDistribution::SHORTCUT_CHROME)));
const base::string16 quoted_exe_path(L"\"" + chrome_exe.value() + L"\"");
// Register for the Start Menu "Internet" link (pre-Win7).
const base::string16 start_menu_entry(GetBrowserClientKey(dist, suffix));
// Register Chrome's display name.
// TODO(grt): http://crbug.com/75152 Also set LocalizedString; see
// http://msdn.microsoft.com/en-us/library/windows/desktop/cc144109(v=VS.85).aspx#registering_the_display_name
entries->push_back(new RegistryEntry(
start_menu_entry, dist->GetDisplayName()));
// Register the "open" verb for launching Chrome via the "Internet" link.
entries->push_back(new RegistryEntry(
start_menu_entry + ShellUtil::kRegShellOpen, quoted_exe_path));
// Register Chrome's icon for the Start Menu "Internet" link.
entries->push_back(new RegistryEntry(
start_menu_entry + ShellUtil::kRegDefaultIcon, icon_path));
// Register installation information.
base::string16 install_info(start_menu_entry + L"\\InstallInfo");
// Note: not using CommandLine since it has ambiguous rules for quoting
// strings.
entries->push_back(new RegistryEntry(install_info, kReinstallCommand,
quoted_exe_path + L" --" +
base::ASCIIToUTF16(switches::kMakeDefaultBrowser)));
entries->push_back(new RegistryEntry(install_info, L"HideIconsCommand",
quoted_exe_path + L" --" +
base::ASCIIToUTF16(switches::kHideIcons)));
entries->push_back(new RegistryEntry(install_info, L"ShowIconsCommand",
quoted_exe_path + L" --" +
base::ASCIIToUTF16(switches::kShowIcons)));
entries->push_back(new RegistryEntry(install_info, L"IconsVisible", 1));
// Register with Default Programs.
const base::string16 reg_app_name(dist->GetBaseAppName().append(suffix));
// Tell Windows where to find Chrome's Default Programs info.
const base::string16 capabilities(GetCapabilitiesKey(dist, suffix));
entries->push_back(new RegistryEntry(ShellUtil::kRegRegisteredApplications,
reg_app_name, capabilities));
// Write out Chrome's Default Programs info.
// TODO(grt): http://crbug.com/75152 Write a reference to a localized
// resource rather than this.
entries->push_back(new RegistryEntry(
capabilities, ShellUtil::kRegApplicationDescription,
dist->GetLongAppDescription()));
entries->push_back(new RegistryEntry(
capabilities, ShellUtil::kRegApplicationIcon, icon_path));
entries->push_back(new RegistryEntry(
capabilities, ShellUtil::kRegApplicationName,
dist->GetDisplayName()));
entries->push_back(new RegistryEntry(capabilities + L"\\Startmenu",
L"StartMenuInternet", reg_app_name));
const base::string16 html_prog_id(GetBrowserProgId(suffix));
for (int i = 0; ShellUtil::kPotentialFileAssociations[i] != NULL; i++) {
entries->push_back(new RegistryEntry(
capabilities + L"\\FileAssociations",
ShellUtil::kPotentialFileAssociations[i], html_prog_id));
}
for (int i = 0; ShellUtil::kPotentialProtocolAssociations[i] != NULL;
i++) {
entries->push_back(new RegistryEntry(
capabilities + L"\\URLAssociations",
ShellUtil::kPotentialProtocolAssociations[i], html_prog_id));
}
}
// This method returns a list of the registry entries required for this
// installation to be registered in the Windows shell.
// In particular:
// - App Paths
// http://msdn.microsoft.com/en-us/library/windows/desktop/ee872121
// - File Associations
// http://msdn.microsoft.com/en-us/library/bb166549
// These entries need to be registered in HKLM prior to Win8.
static void GetChromeAppRegistrationEntries(
const base::FilePath& chrome_exe,
const base::string16& suffix,
ScopedVector<RegistryEntry>* entries) {
base::string16 app_path_key(ShellUtil::kAppPathsRegistryKey);
app_path_key.push_back(base::FilePath::kSeparators[0]);
app_path_key.append(chrome_exe.BaseName().value());
entries->push_back(new RegistryEntry(app_path_key, chrome_exe.value()));
entries->push_back(new RegistryEntry(app_path_key,
ShellUtil::kAppPathsRegistryPathName,
chrome_exe.DirName().value()));
const base::string16 html_prog_id(GetBrowserProgId(suffix));
for (int i = 0; ShellUtil::kPotentialFileAssociations[i] != NULL; i++) {
GetAppExtRegistrationEntries(
html_prog_id, ShellUtil::kPotentialFileAssociations[i], entries);
}
}
// Gets the registry entries to register an application as a handler for a
// particular file extension. |prog_id| is the ProgId used by Windows for the
// application. |ext| is the file extension, which must begin with a '.'.
static void GetAppExtRegistrationEntries(
const base::string16& prog_id,
const base::string16& ext,
ScopedVector<RegistryEntry>* entries) {
// In HKEY_CURRENT_USER\Software\Classes\EXT\OpenWithProgids, create an
// empty value with this class's ProgId.
base::string16 key_name(ShellUtil::kRegClasses);
key_name.push_back(base::FilePath::kSeparators[0]);
key_name.append(ext);
key_name.push_back(base::FilePath::kSeparators[0]);
key_name.append(ShellUtil::kRegOpenWithProgids);
entries->push_back(new RegistryEntry(key_name, prog_id, base::string16()));
}
// Gets the registry entries to register an application as the default handler
// for a particular file extension. |prog_id| is the ProgId used by Windows
// for the application. |ext| is the file extension, which must begin with a
// '.'. If |overwrite_existing|, always sets the default handler; otherwise
// only sets if there is no existing default.
//
// This has no effect on Windows 8. Windows 8 ignores the default and lets the
// user choose. If there is only one handler for a file, it will automatically
// become the default. Otherwise, the first time the user opens a file, they
// are presented with the dialog to set the default handler. (This is roughly
// equivalent to being called with |overwrite_existing| false.)
static void GetAppDefaultRegistrationEntries(
const base::string16& prog_id,
const base::string16& ext,
bool overwrite_existing,
ScopedVector<RegistryEntry>* entries) {
// Set the default value of HKEY_CURRENT_USER\Software\Classes\EXT to this
// class's name.
base::string16 key_name(ShellUtil::kRegClasses);
key_name.push_back(base::FilePath::kSeparators[0]);
key_name.append(ext);
scoped_ptr<RegistryEntry> default_association(
new RegistryEntry(key_name, prog_id));
if (overwrite_existing ||
!default_association->KeyExistsInRegistry(
RegistryEntry::LOOK_IN_HKCU)) {
entries->push_back(default_association.release());
}
}
// This method returns a list of all the user level registry entries that
// are needed to make Chromium the default handler for a protocol on XP.
static void GetXPStyleUserProtocolEntries(
const base::string16& protocol,
const base::string16& chrome_icon,
const base::string16& chrome_open,
ScopedVector<RegistryEntry>* entries) {
// Protocols associations.
base::string16 url_key(ShellUtil::kRegClasses);
url_key.push_back(base::FilePath::kSeparators[0]);
url_key.append(protocol);
// This registry value tells Windows that this 'class' is a URL scheme
// so IE, explorer and other apps will route it to our handler.
// <root hkey>\Software\Classes\<protocol>\URL Protocol
entries->push_back(new RegistryEntry(url_key,
ShellUtil::kRegUrlProtocol, base::string16()));
// <root hkey>\Software\Classes\<protocol>\DefaultIcon
base::string16 icon_key = url_key + ShellUtil::kRegDefaultIcon;
entries->push_back(new RegistryEntry(icon_key, chrome_icon));
// <root hkey>\Software\Classes\<protocol>\shell\open\command
base::string16 shell_key = url_key + ShellUtil::kRegShellOpen;
entries->push_back(new RegistryEntry(shell_key, chrome_open));
// <root hkey>\Software\Classes\<protocol>\shell\open\ddeexec
base::string16 dde_key = url_key + L"\\shell\\open\\ddeexec";
entries->push_back(new RegistryEntry(dde_key, base::string16()));
// <root hkey>\Software\Classes\<protocol>\shell\@
base::string16 protocol_shell_key = url_key + ShellUtil::kRegShellPath;
entries->push_back(new RegistryEntry(protocol_shell_key, L"open"));
}
// This method returns a list of all the user level registry entries that
// are needed to make Chromium default browser on XP.
// Some of these entries are irrelevant in recent versions of Windows, but
// we register them anyways as some legacy apps are hardcoded to lookup those
// values.
static void GetXPStyleDefaultBrowserUserEntries(
BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& suffix,
ScopedVector<RegistryEntry>* entries) {
// File extension associations.
base::string16 html_prog_id(GetBrowserProgId(suffix));
for (int i = 0; ShellUtil::kDefaultFileAssociations[i] != NULL; i++) {
GetAppDefaultRegistrationEntries(
html_prog_id, ShellUtil::kDefaultFileAssociations[i], true, entries);
}
// Protocols associations.
base::string16 chrome_open = ShellUtil::GetChromeShellOpenCmd(chrome_exe);
base::string16 chrome_icon =
ShellUtil::FormatIconLocation(
chrome_exe,
dist->GetIconIndex(BrowserDistribution::SHORTCUT_CHROME));
for (int i = 0; ShellUtil::kBrowserProtocolAssociations[i] != NULL; i++) {
GetXPStyleUserProtocolEntries(ShellUtil::kBrowserProtocolAssociations[i],
chrome_icon, chrome_open, entries);
}
// start->Internet shortcut.
base::string16 start_menu(ShellUtil::kRegStartMenuInternet);
base::string16 app_name = dist->GetBaseAppName() + suffix;
entries->push_back(new RegistryEntry(start_menu, app_name));
}
// Generate work_item tasks required to create current registry entry and
// add them to the given work item list.
void AddToWorkItemList(HKEY root, WorkItemList *items) const {
items->AddCreateRegKeyWorkItem(root, key_path_, WorkItem::kWow64Default);
if (is_string_) {
items->AddSetRegValueWorkItem(
root, key_path_, WorkItem::kWow64Default, name_, value_, true);
} else {
items->AddSetRegValueWorkItem(
root, key_path_, WorkItem::kWow64Default, name_, int_value_, true);
}
}
// Checks if the current registry entry exists in HKCU\|key_path_|\|name_|
// and value is |value_|. If the key does NOT exist in HKCU, checks for
// the correct name and value in HKLM.
// |look_for_in| specifies roots (HKCU and/or HKLM) in which to look for the
// key, unspecified roots are not looked into (i.e. the the key is assumed not
// to exist in them).
// |look_for_in| must at least specify one root to look into.
// If |look_for_in| is LOOK_IN_HKCU_THEN_HKLM, this method mimics Windows'
// behavior when searching in HKCR (HKCU takes precedence over HKLM). For
// registrations outside of HKCR on versions of Windows prior to Win8,
// Chrome's values go in HKLM. This function will make unnecessary (but
// harmless) queries into HKCU in that case.
bool ExistsInRegistry(uint32 look_for_in) const {
DCHECK(look_for_in);
RegistryStatus status = DOES_NOT_EXIST;
if (look_for_in & LOOK_IN_HKCU)
status = StatusInRegistryUnderRoot(HKEY_CURRENT_USER);
if (status == DOES_NOT_EXIST && (look_for_in & LOOK_IN_HKLM))
status = StatusInRegistryUnderRoot(HKEY_LOCAL_MACHINE);
return status == SAME_VALUE;
}
// Checks if the current registry entry exists in \|key_path_|\|name_|,
// regardless of value. Same lookup rules as ExistsInRegistry.
// Unlike ExistsInRegistry, this returns true if some other value is present
// with the same key.
bool KeyExistsInRegistry(uint32 look_for_in) const {
DCHECK(look_for_in);
RegistryStatus status = DOES_NOT_EXIST;
if (look_for_in & LOOK_IN_HKCU)
status = StatusInRegistryUnderRoot(HKEY_CURRENT_USER);
if (status == DOES_NOT_EXIST && (look_for_in & LOOK_IN_HKLM))
status = StatusInRegistryUnderRoot(HKEY_LOCAL_MACHINE);
return status != DOES_NOT_EXIST;
}
private:
// States this RegistryKey can be in compared to the registry.
enum RegistryStatus {
// |name_| does not exist in the registry
DOES_NOT_EXIST,
// |name_| exists, but its value != |value_|
DIFFERENT_VALUE,
// |name_| exists and its value is |value_|
SAME_VALUE,
};
// Create a object that represent default value of a key
RegistryEntry(const base::string16& key_path, const base::string16& value)
: key_path_(key_path), name_(),
is_string_(true), value_(value), int_value_(0) {
}
// Create a object that represent a key of type REG_SZ
RegistryEntry(const base::string16& key_path, const base::string16& name,
const base::string16& value)
: key_path_(key_path), name_(name),
is_string_(true), value_(value), int_value_(0) {
}
// Create a object that represent a key of integer type
RegistryEntry(const base::string16& key_path, const base::string16& name,
DWORD value)
: key_path_(key_path), name_(name),
is_string_(false), value_(), int_value_(value) {
}
base::string16 key_path_; // key path for the registry entry
base::string16 name_; // name of the registry entry
bool is_string_; // true if current registry entry is of type REG_SZ
base::string16 value_; // string value (useful if is_string_ = true)
DWORD int_value_; // integer value (useful if is_string_ = false)
// Helper function for ExistsInRegistry().
// Returns the RegistryStatus of the current registry entry in
// |root|\|key_path_|\|name_|.
RegistryStatus StatusInRegistryUnderRoot(HKEY root) const {
RegKey key(root, key_path_.c_str(), KEY_QUERY_VALUE);
bool found = false;
bool correct_value = false;
if (is_string_) {
base::string16 read_value;
found = key.ReadValue(name_.c_str(), &read_value) == ERROR_SUCCESS;
if (found) {
correct_value = read_value.size() == value_.size() &&
std::equal(value_.begin(), value_.end(), read_value.begin(),
base::CaseInsensitiveCompare<wchar_t>());
}
} else {
DWORD read_value;
found = key.ReadValueDW(name_.c_str(), &read_value) == ERROR_SUCCESS;
if (found)
correct_value = read_value == int_value_;
}
return found ?
(correct_value ? SAME_VALUE : DIFFERENT_VALUE) : DOES_NOT_EXIST;
}
DISALLOW_COPY_AND_ASSIGN(RegistryEntry);
}; // class RegistryEntry
// This method converts all the RegistryEntries from the given list to
// Set/CreateRegWorkItems and runs them using WorkItemList.
bool AddRegistryEntries(HKEY root, const ScopedVector<RegistryEntry>& entries) {
scoped_ptr<WorkItemList> items(WorkItem::CreateWorkItemList());
for (ScopedVector<RegistryEntry>::const_iterator itr = entries.begin();
itr != entries.end(); ++itr)
(*itr)->AddToWorkItemList(root, items.get());
// Apply all the registry changes and if there is a problem, rollback
if (!items->Do()) {
items->Rollback();
return false;
}
return true;
}
// Checks that all |entries| are present on this computer.
// |look_for_in| is passed to RegistryEntry::ExistsInRegistry(). Documentation
// for it can be found there.
bool AreEntriesRegistered(const ScopedVector<RegistryEntry>& entries,
uint32 look_for_in) {
bool registered = true;
for (ScopedVector<RegistryEntry>::const_iterator itr = entries.begin();
registered && itr != entries.end(); ++itr) {
// We do not need registered = registered && ... since the loop condition
// is set to exit early.
registered = (*itr)->ExistsInRegistry(look_for_in);
}
return registered;
}
// Checks that all required registry entries for Chrome are already present
// on this computer. See RegistryEntry::ExistsInRegistry for the behavior of
// |look_for_in|.
// Note: between r133333 and r154145 we were registering parts of Chrome in HKCU
// and parts in HKLM for user-level installs; we now always register everything
// under a single registry root. Not doing so caused http://crbug.com/144910 for
// users who first-installed Chrome in that revision range (those users are
// still impacted by http://crbug.com/144910). This method will keep returning
// true for affected users (i.e. who have all the registrations, but over both
// registry roots).
bool IsChromeRegistered(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& suffix,
uint32 look_for_in) {
ScopedVector<RegistryEntry> entries;
RegistryEntry::GetChromeProgIdEntries(dist, chrome_exe, suffix, &entries);
RegistryEntry::GetShellIntegrationEntries(dist, chrome_exe, suffix, &entries);
RegistryEntry::GetChromeAppRegistrationEntries(chrome_exe, suffix, &entries);
return AreEntriesRegistered(entries, look_for_in);
}
// This method checks if Chrome is already registered on the local machine
// for the requested protocol. It just checks the one value required for this.
// See RegistryEntry::ExistsInRegistry for the behavior of |look_for_in|.
bool IsChromeRegisteredForProtocol(BrowserDistribution* dist,
const base::string16& suffix,
const base::string16& protocol,
uint32 look_for_in) {
ScopedVector<RegistryEntry> entries;
RegistryEntry::GetProtocolCapabilityEntries(dist, suffix, protocol, &entries);
return AreEntriesRegistered(entries, look_for_in);
}
// This method registers Chrome on Vista by launching an elevated setup.exe.
// That will show the user the standard Vista elevation prompt. If the user
// accepts it the new process will make the necessary changes and return SUCCESS
// that we capture and return.
// If protocol is non-empty we will also register Chrome as being capable of
// handling the protocol.
bool ElevateAndRegisterChrome(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& suffix,
const base::string16& protocol) {
// Only user-level installs prior to Windows 8 should need to elevate to
// register.
DCHECK(InstallUtil::IsPerUserInstall(chrome_exe));
DCHECK_LT(base::win::GetVersion(), base::win::VERSION_WIN8);
base::FilePath exe_path = chrome_exe.DirName().Append(installer::kSetupExe);
if (!base::PathExists(exe_path)) {
HKEY reg_root = InstallUtil::IsPerUserInstall(chrome_exe) ?
HKEY_CURRENT_USER : HKEY_LOCAL_MACHINE;
RegKey key(reg_root,
dist->GetUninstallRegPath().c_str(),
KEY_READ | KEY_WOW64_32KEY);
base::string16 uninstall_string;
key.ReadValue(installer::kUninstallStringField, &uninstall_string);
base::CommandLine command_line =
base::CommandLine::FromString(uninstall_string);
exe_path = command_line.GetProgram();
}
if (base::PathExists(exe_path)) {
base::CommandLine cmd(exe_path);
cmd.AppendSwitchPath(installer::switches::kRegisterChromeBrowser,
chrome_exe);
if (!suffix.empty()) {
cmd.AppendSwitchNative(
installer::switches::kRegisterChromeBrowserSuffix, suffix);
}
if (!protocol.empty()) {
cmd.AppendSwitchNative(
installer::switches::kRegisterURLProtocol, protocol);
}
DWORD ret_val = 0;
InstallUtil::ExecuteExeAsAdmin(cmd, &ret_val);
if (ret_val == 0)
return true;
}
return false;
}
// Launches the Windows 'settings' modern app with the 'default apps' view
// focused. This only works for Windows 8 and Windows 10. The appModelId
// looks arbitrary but it is the same in Win8 and Win10 previews. There
// is no easy way to retrieve the appModelId from the registry.
bool LaunchDefaultAppsSettingsModernDialog() {
base::win::ScopedComPtr<IApplicationActivationManager> activator;
HRESULT hr = activator.CreateInstance(CLSID_ApplicationActivationManager);
if (SUCCEEDED(hr)) {
DWORD pid = 0;
CoAllowSetForegroundWindow(activator.get(), nullptr);
hr = activator->ActivateApplication(
L"windows.immersivecontrolpanel_cw5n1h2txyewy"
L"!microsoft.windows.immersivecontrolpanel",
L"page=SettingsPageAppsDefaults", AO_NONE, &pid);
return SUCCEEDED(hr);
}
return false;
}
// Launches the Windows 7 and Windows 8 dialog for picking the application to
// handle the given protocol. Most importantly, this is used to set the default
// handler for http (and, implicitly with it, https). In that case it is also
// known as the 'how do you want to open webpages' dialog.
// It is required that Chrome be already *registered* for the given protocol.
bool LaunchSelectDefaultProtocolHandlerDialog(const wchar_t* protocol) {
DCHECK(protocol);
OPENASINFO open_as_info = {};
open_as_info.pcszFile = protocol;
open_as_info.oaifInFlags =
OAIF_URL_PROTOCOL | OAIF_FORCE_REGISTRATION | OAIF_REGISTER_EXT;
HRESULT hr = SHOpenWithDialog(NULL, &open_as_info);
DLOG_IF(WARNING, FAILED(hr)) << "Failed to set as default " << protocol
<< " handler; hr=0x" << std::hex << hr;
if (FAILED(hr))
return false;
SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
return true;
}
// Launches the Windows 7 and Windows 8 application association dialog, which
// is the only documented way to make a browser the default browser on
// Windows 8.
bool LaunchApplicationAssociationDialog(const base::string16& app_id) {
base::win::ScopedComPtr<IApplicationAssociationRegistrationUI> aarui;
HRESULT hr = aarui.CreateInstance(CLSID_ApplicationAssociationRegistrationUI);
if (FAILED(hr))
return false;
hr = aarui->LaunchAdvancedAssociationUI(app_id.c_str());
return SUCCEEDED(hr);
}
// Returns true if the current install's |chrome_exe| has been registered with
// |suffix|.
// |confirmation_level| is the level of verification desired as described in
// the RegistrationConfirmationLevel enum above.
// |suffix| can be the empty string (this is used to support old installs
// where we used to not suffix user-level installs if they were the first to
// request the non-suffixed registry entries on the machine).
// NOTE: This a quick check that only validates that a single registry entry
// points to |chrome_exe|. This should only be used at run-time to determine
// how Chrome is registered, not to know whether the registration is complete
// at install-time (IsChromeRegistered() can be used for that).
bool QuickIsChromeRegistered(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& suffix,
RegistrationConfirmationLevel confirmation_level) {
// Get the appropriate key to look for based on the level desired.
base::string16 reg_key;
switch (confirmation_level) {
case CONFIRM_PROGID_REGISTRATION:
// Software\Classes\ChromeHTML|suffix|
reg_key = ShellUtil::kRegClasses;
reg_key.push_back(base::FilePath::kSeparators[0]);
reg_key.append(dist->GetBrowserProgIdPrefix());
reg_key.append(suffix);
break;
case CONFIRM_SHELL_REGISTRATION:
case CONFIRM_SHELL_REGISTRATION_IN_HKLM:
// Software\Clients\StartMenuInternet\Google Chrome|suffix|
reg_key = RegistryEntry::GetBrowserClientKey(dist, suffix);
break;
default:
NOTREACHED();
break;
}
reg_key.append(ShellUtil::kRegShellOpen);
// ProgId registrations are allowed to reside in HKCU for user-level installs
// (and values there have priority over values in HKLM). The same is true for
// shell integration entries as of Windows 8.
if (confirmation_level == CONFIRM_PROGID_REGISTRATION ||
(confirmation_level == CONFIRM_SHELL_REGISTRATION &&
base::win::GetVersion() >= base::win::VERSION_WIN8)) {
const RegKey key_hkcu(HKEY_CURRENT_USER, reg_key.c_str(), KEY_QUERY_VALUE);
base::string16 hkcu_value;
// If |reg_key| is present in HKCU, assert that it points to |chrome_exe|.
// Otherwise, fall back on an HKLM lookup below.
if (key_hkcu.ReadValue(L"", &hkcu_value) == ERROR_SUCCESS)
return InstallUtil::ProgramCompare(chrome_exe).Evaluate(hkcu_value);
}
// Assert that |reg_key| points to |chrome_exe| in HKLM.
const RegKey key_hklm(HKEY_LOCAL_MACHINE, reg_key.c_str(), KEY_QUERY_VALUE);
base::string16 hklm_value;
if (key_hklm.ReadValue(L"", &hklm_value) == ERROR_SUCCESS)
return InstallUtil::ProgramCompare(chrome_exe).Evaluate(hklm_value);
return false;
}
// Sets |suffix| to a 27 character string that is specific to this user on this
// machine (on user-level installs only).
// To support old-style user-level installs however, |suffix| is cleared if the
// user currently owns the non-suffixed HKLM registrations.
// |suffix| can also be set to the user's username if the current install is
// suffixed as per the old-style registrations.
// |suffix| is cleared on system-level installs.
// |suffix| should then be appended to all Chrome properties that may conflict
// with other Chrome user-level installs.
// Returns true unless one of the underlying calls fails.
bool GetInstallationSpecificSuffix(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
base::string16* suffix) {
if (!InstallUtil::IsPerUserInstall(chrome_exe) ||
QuickIsChromeRegistered(dist, chrome_exe, base::string16(),
CONFIRM_SHELL_REGISTRATION)) {
// No suffix on system-level installs and user-level installs already
// registered with no suffix.
suffix->clear();
return true;
}
// Get the old suffix for the check below.
if (!ShellUtil::GetOldUserSpecificRegistrySuffix(suffix)) {
NOTREACHED();
return false;
}
if (QuickIsChromeRegistered(dist, chrome_exe, *suffix,
CONFIRM_SHELL_REGISTRATION)) {
// Username suffix for installs that are suffixed as per the old-style.
return true;
}
return ShellUtil::GetUserSpecificRegistrySuffix(suffix);
}
// Returns the root registry key (HKLM or HKCU) under which registrations must
// be placed for this install. As of Windows 8 everything can go in HKCU for
// per-user installs.
HKEY DetermineRegistrationRoot(bool is_per_user) {
return is_per_user && base::win::GetVersion() >= base::win::VERSION_WIN8 ?
HKEY_CURRENT_USER : HKEY_LOCAL_MACHINE;
}
// Associates Chrome with supported protocols and file associations. This should
// not be required on Vista+ but since some applications still read
// Software\Classes\http key directly, we have to do this on Vista+ as well.
bool RegisterChromeAsDefaultXPStyle(BrowserDistribution* dist,
int shell_change,
const base::FilePath& chrome_exe) {
bool ret = true;
ScopedVector<RegistryEntry> entries;
RegistryEntry::GetXPStyleDefaultBrowserUserEntries(
dist, chrome_exe,
ShellUtil::GetCurrentInstallationSuffix(dist, chrome_exe), &entries);
// Change the default browser for current user.
if ((shell_change & ShellUtil::CURRENT_USER) &&
!AddRegistryEntries(HKEY_CURRENT_USER, entries)) {
ret = false;
LOG(ERROR) << "Could not make Chrome default browser (XP/current user).";
}
// Chrome as default browser at system level.
if ((shell_change & ShellUtil::SYSTEM_LEVEL) &&
!AddRegistryEntries(HKEY_LOCAL_MACHINE, entries)) {
ret = false;
LOG(ERROR) << "Could not make Chrome default browser (XP/system level).";
}
return ret;
}
// Associates Chrome with |protocol| in the registry. This should not be
// required on Vista+ but since some applications still read these registry
// keys directly, we have to do this on Vista+ as well.
// See http://msdn.microsoft.com/library/aa767914.aspx for more details.
bool RegisterChromeAsDefaultProtocolClientXPStyle(
BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& protocol) {
ScopedVector<RegistryEntry> entries;
const base::string16 chrome_open(
ShellUtil::GetChromeShellOpenCmd(chrome_exe));
const base::string16 chrome_icon(
ShellUtil::FormatIconLocation(
chrome_exe,
dist->GetIconIndex(BrowserDistribution::SHORTCUT_CHROME)));
RegistryEntry::GetXPStyleUserProtocolEntries(protocol, chrome_icon,
chrome_open, &entries);
// Change the default protocol handler for current user.
if (!AddRegistryEntries(HKEY_CURRENT_USER, entries)) {
LOG(ERROR) << "Could not make Chrome default protocol client (XP).";
return false;
}
return true;
}
// Returns |properties.shortcut_name| if the property is set, otherwise it
// returns dist->GetShortcutName(BrowserDistribution::SHORTCUT_CHROME). In any
// case, it makes sure the return value is suffixed with ".lnk".
base::string16 ExtractShortcutNameFromProperties(
BrowserDistribution* dist,
const ShellUtil::ShortcutProperties& properties) {
DCHECK(dist);
base::string16 shortcut_name;
if (properties.has_shortcut_name()) {
shortcut_name = properties.shortcut_name;
} else {
shortcut_name =
dist->GetShortcutName(BrowserDistribution::SHORTCUT_CHROME);
}
if (!EndsWith(shortcut_name, installer::kLnkExt, false))
shortcut_name.append(installer::kLnkExt);
return shortcut_name;
}
// Converts ShellUtil::ShortcutOperation to the best-matching value in
// base::win::ShortcutOperation.
base::win::ShortcutOperation TranslateShortcutOperation(
ShellUtil::ShortcutOperation operation) {
switch (operation) {
case ShellUtil::SHELL_SHORTCUT_CREATE_ALWAYS: // Falls through.
case ShellUtil::SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL:
return base::win::SHORTCUT_CREATE_ALWAYS;
case ShellUtil::SHELL_SHORTCUT_UPDATE_EXISTING:
return base::win::SHORTCUT_UPDATE_EXISTING;
case ShellUtil::SHELL_SHORTCUT_REPLACE_EXISTING:
return base::win::SHORTCUT_REPLACE_EXISTING;
default:
NOTREACHED();
return base::win::SHORTCUT_REPLACE_EXISTING;
}
}
// Returns a base::win::ShortcutProperties struct containing the properties
// to set on the shortcut based on the provided ShellUtil::ShortcutProperties.
base::win::ShortcutProperties TranslateShortcutProperties(
const ShellUtil::ShortcutProperties& properties) {
base::win::ShortcutProperties shortcut_properties;
if (properties.has_target()) {
shortcut_properties.set_target(properties.target);
DCHECK(!properties.target.DirName().empty());
shortcut_properties.set_working_dir(properties.target.DirName());
}
if (properties.has_arguments())
shortcut_properties.set_arguments(properties.arguments);
if (properties.has_description())
shortcut_properties.set_description(properties.description);
if (properties.has_icon())
shortcut_properties.set_icon(properties.icon, properties.icon_index);
if (properties.has_app_id())
shortcut_properties.set_app_id(properties.app_id);
if (properties.has_dual_mode())
shortcut_properties.set_dual_mode(properties.dual_mode);
return shortcut_properties;
}
// Cleans up an old verb (run) we used to register in
// <root>\Software\Classes\Chrome<.suffix>\.exe\shell\run on Windows 8.
void RemoveRunVerbOnWindows8(BrowserDistribution* dist,
const base::FilePath& chrome_exe) {
if (IsChromeMetroSupported()) {
bool is_per_user_install = InstallUtil::IsPerUserInstall(chrome_exe);
HKEY root_key = DetermineRegistrationRoot(is_per_user_install);
// There's no need to rollback, so forgo the usual work item lists and just
// remove the key from the registry.
base::string16 run_verb_key(ShellUtil::kRegClasses);
run_verb_key.push_back(base::FilePath::kSeparators[0]);
run_verb_key.append(ShellUtil::GetBrowserModelId(
dist, is_per_user_install));
run_verb_key.append(ShellUtil::kRegExePath);
run_verb_key.append(ShellUtil::kRegShellPath);
run_verb_key.push_back(base::FilePath::kSeparators[0]);
run_verb_key.append(ShellUtil::kRegVerbRun);
InstallUtil::DeleteRegistryKey(root_key, run_verb_key,
WorkItem::kWow64Default);
}
}
// Gets the short (8.3) form of |path|, putting the result in |short_path| and
// returning true on success. |short_path| is not modified on failure.
bool ShortNameFromPath(const base::FilePath& path, base::string16* short_path) {
DCHECK(short_path);
base::string16 result(MAX_PATH, L'\0');
DWORD short_length = GetShortPathName(path.value().c_str(), &result[0],
result.size());
if (short_length == 0 || short_length > result.size()) {
PLOG(ERROR) << "Error getting short (8.3) path";
return false;
}
result.resize(short_length);
short_path->swap(result);
return true;
}
// Probe using IApplicationAssociationRegistration::QueryCurrentDefault
// (Windows 8); see ProbeProtocolHandlers. This mechanism is not suitable for
// use on previous versions of Windows despite the presence of
// QueryCurrentDefault on them since versions of Windows prior to Windows 8
// did not perform validation on the ProgID registered as the current default.
// As a result, stale ProgIDs could be returned, leading to false positives.
ShellUtil::DefaultState ProbeCurrentDefaultHandlers(
const base::FilePath& chrome_exe,
const wchar_t* const* protocols,
size_t num_protocols) {
base::win::ScopedComPtr<IApplicationAssociationRegistration> registration;
HRESULT hr = registration.CreateInstance(
CLSID_ApplicationAssociationRegistration, NULL, CLSCTX_INPROC);
if (FAILED(hr))
return ShellUtil::UNKNOWN_DEFAULT;
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
base::string16 prog_id(dist->GetBrowserProgIdPrefix());
prog_id += ShellUtil::GetCurrentInstallationSuffix(dist, chrome_exe);
for (size_t i = 0; i < num_protocols; ++i) {
base::win::ScopedCoMem<wchar_t> current_app;
hr = registration->QueryCurrentDefault(protocols[i], AT_URLPROTOCOL,
AL_EFFECTIVE, &current_app);
if (FAILED(hr) || prog_id.compare(current_app) != 0)
return ShellUtil::NOT_DEFAULT;
}
return ShellUtil::IS_DEFAULT;
}
// Probe using IApplicationAssociationRegistration::QueryAppIsDefault (Vista and
// Windows 7); see ProbeProtocolHandlers.
ShellUtil::DefaultState ProbeAppIsDefaultHandlers(
const base::FilePath& chrome_exe,
const wchar_t* const* protocols,
size_t num_protocols) {
base::win::ScopedComPtr<IApplicationAssociationRegistration> registration;
HRESULT hr = registration.CreateInstance(
CLSID_ApplicationAssociationRegistration, NULL, CLSCTX_INPROC);
if (FAILED(hr))
return ShellUtil::UNKNOWN_DEFAULT;
BrowserDistribution* dist = BrowserDistribution::GetDistribution();
base::string16 app_name(ShellUtil::GetApplicationName(dist, chrome_exe));
BOOL result;
for (size_t i = 0; i < num_protocols; ++i) {
result = TRUE;
hr = registration->QueryAppIsDefault(protocols[i], AT_URLPROTOCOL,
AL_EFFECTIVE, app_name.c_str(), &result);
if (FAILED(hr) || result == FALSE)
return ShellUtil::NOT_DEFAULT;
}
return ShellUtil::IS_DEFAULT;
}
// Probe the current commands registered to handle the shell "open" verb for
// |protocols| (Windows XP); see ProbeProtocolHandlers.
ShellUtil::DefaultState ProbeOpenCommandHandlers(
const base::FilePath& chrome_exe,
const wchar_t* const* protocols,
size_t num_protocols) {
// Get its short (8.3) form.
base::string16 short_app_path;
if (!ShortNameFromPath(chrome_exe, &short_app_path))
return ShellUtil::UNKNOWN_DEFAULT;
const HKEY root_key = HKEY_CLASSES_ROOT;
base::string16 key_path;
base::win::RegKey key;
base::string16 value;
base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
base::string16 short_path;
for (size_t i = 0; i < num_protocols; ++i) {
// Get the command line from HKCU\<protocol>\shell\open\command.
key_path.assign(protocols[i]).append(ShellUtil::kRegShellOpen);
if ((key.Open(root_key, key_path.c_str(),
KEY_QUERY_VALUE) != ERROR_SUCCESS) ||
(key.ReadValue(L"", &value) != ERROR_SUCCESS)) {
return ShellUtil::NOT_DEFAULT;
}
// Need to normalize path in case it's been munged.
command_line = base::CommandLine::FromString(value);
if (!ShortNameFromPath(command_line.GetProgram(), &short_path))
return ShellUtil::UNKNOWN_DEFAULT;
if (!base::FilePath::CompareEqualIgnoreCase(short_path, short_app_path))
return ShellUtil::NOT_DEFAULT;
}
return ShellUtil::IS_DEFAULT;
}
// A helper function that probes default protocol handler registration (in a
// manner appropriate for the current version of Windows) to determine if
// Chrome is the default handler for |protocols|. Returns IS_DEFAULT
// only if Chrome is the default for all specified protocols.
ShellUtil::DefaultState ProbeProtocolHandlers(
const base::FilePath& chrome_exe,
const wchar_t* const* protocols,
size_t num_protocols) {
#if DCHECK_IS_ON()
DCHECK(!num_protocols || protocols);
for (size_t i = 0; i < num_protocols; ++i)
DCHECK(protocols[i] && *protocols[i]);
#endif
const base::win::Version windows_version = base::win::GetVersion();
if (windows_version >= base::win::VERSION_WIN8)
return ProbeCurrentDefaultHandlers(chrome_exe, protocols, num_protocols);
else if (windows_version >= base::win::VERSION_VISTA)
return ProbeAppIsDefaultHandlers(chrome_exe, protocols, num_protocols);
return ProbeOpenCommandHandlers(chrome_exe, protocols, num_protocols);
}
// (Windows 8+) Finds and stores an app shortcuts folder path in *|path|.
// Returns true on success.
bool GetAppShortcutsFolder(BrowserDistribution* dist,
ShellUtil::ShellChange level,
base::FilePath *path) {
DCHECK(path);
DCHECK_GE(base::win::GetVersion(), base::win::VERSION_WIN8);
base::FilePath folder;
if (!PathService::Get(base::DIR_APP_SHORTCUTS, &folder)) {
LOG(ERROR) << "Could not get application shortcuts location.";
return false;
}
folder = folder.Append(
ShellUtil::GetBrowserModelId(dist, level == ShellUtil::CURRENT_USER));
if (!base::DirectoryExists(folder)) {
VLOG(1) << "No start screen shortcuts.";
return false;
}
*path = folder;
return true;
}
// Shortcut filters for BatchShortcutAction().
typedef base::Callback<bool(const base::FilePath& /*shortcut_path*/,
const base::string16& /*args*/)>
ShortcutFilterCallback;
// FilterTargetEq is a shortcut filter that matches only shortcuts that have a
// specific target, and optionally matches shortcuts that have non-empty
// arguments.
class FilterTargetEq {
public:
FilterTargetEq(const base::FilePath& desired_target_exe, bool require_args);
// Returns true if filter rules are satisfied, i.e.:
// - |target_path|'s target == |desired_target_compare_|, and
// - |args| is non-empty (if |require_args_| == true).
bool Match(const base::FilePath& target_path,
const base::string16& args) const;
// A convenience routine to create a callback to call Match().
// The callback is only valid during the lifetime of the FilterTargetEq
// instance.
ShortcutFilterCallback AsShortcutFilterCallback();
private:
InstallUtil::ProgramCompare desired_target_compare_;
bool require_args_;
};
FilterTargetEq::FilterTargetEq(const base::FilePath& desired_target_exe,
bool require_args)
: desired_target_compare_(desired_target_exe),
require_args_(require_args) {}
bool FilterTargetEq::Match(const base::FilePath& target_path,
const base::string16& args) const {
if (!desired_target_compare_.EvaluatePath(target_path))
return false;
if (require_args_ && args.empty())
return false;
return true;
}
ShortcutFilterCallback FilterTargetEq::AsShortcutFilterCallback() {
return base::Bind(&FilterTargetEq::Match, base::Unretained(this));
}
// Shortcut operations for BatchShortcutAction().
typedef base::Callback<bool(const base::FilePath& /*shortcut_path*/)>
ShortcutOperationCallback;
bool ShortcutOpUnpin(const base::FilePath& shortcut_path) {
VLOG(1) << "Trying to unpin " << shortcut_path.value();
if (!base::win::TaskbarUnpinShortcutLink(shortcut_path.value().c_str())) {
VLOG(1) << shortcut_path.value() << " wasn't pinned (or the unpin failed).";
// No error, since shortcut might not be pinned.
}
return true;
}
bool ShortcutOpDelete(const base::FilePath& shortcut_path) {
bool ret = base::DeleteFile(shortcut_path, false);
LOG_IF(ERROR, !ret) << "Failed to remove " << shortcut_path.value();
return ret;
}
bool ShortcutOpRetarget(const base::FilePath& old_target,
const base::FilePath& new_target,
const base::FilePath& shortcut_path) {
base::win::ShortcutProperties new_prop;
new_prop.set_target(new_target);
// If the old icon matches old target, then update icon while keeping the old
// icon index. Non-fatal if we fail to get the old icon.
base::win::ShortcutProperties old_prop;
if (base::win::ResolveShortcutProperties(
shortcut_path,
base::win::ShortcutProperties::PROPERTIES_ICON,
&old_prop)) {
if (InstallUtil::ProgramCompare(old_target).EvaluatePath(old_prop.icon))
new_prop.set_icon(new_target, old_prop.icon_index);
} else {
LOG(ERROR) << "Failed to resolve " << shortcut_path.value();
}
bool result = base::win::CreateOrUpdateShortcutLink(
shortcut_path, new_prop, base::win::SHORTCUT_UPDATE_EXISTING);
LOG_IF(ERROR, !result) << "Failed to retarget " << shortcut_path.value();
return result;
}
bool ShortcutOpListOrRemoveUnknownArgs(
bool do_removal,
std::vector<std::pair<base::FilePath, base::string16> >* shortcuts,
const base::FilePath& shortcut_path) {
base::string16 args;
if (!base::win::ResolveShortcut(shortcut_path, NULL, &args))
return false;
base::CommandLine current_args(base::CommandLine::FromString(
base::StringPrintf(L"unused_program %ls", args.c_str())));
const char* const kept_switches[] = {
switches::kApp,
switches::kAppId,
switches::kShowAppList,
switches::kProfileDirectory,
};
base::CommandLine desired_args(base::CommandLine::NO_PROGRAM);
desired_args.CopySwitchesFrom(current_args, kept_switches,
arraysize(kept_switches));
if (desired_args.argv().size() == current_args.argv().size())
return true;
if (shortcuts)
shortcuts->push_back(std::make_pair(shortcut_path, args));
if (!do_removal)
return true;
base::win::ShortcutProperties updated_properties;
updated_properties.set_arguments(desired_args.GetArgumentsString());
return base::win::CreateOrUpdateShortcutLink(
shortcut_path, updated_properties, base::win::SHORTCUT_UPDATE_EXISTING);
}
// {|location|, |dist|, |level|} determine |shortcut_folder|.
// For each shortcut in |shortcut_folder| that match |shortcut_filter|, apply
// |shortcut_operation|. Returns true if all operations are successful.
// All intended operations are attempted, even if failures occur.
// This method will abort and return false if |cancel| is non-NULL and gets set
// at any point during this call.
bool BatchShortcutAction(
const ShortcutFilterCallback& shortcut_filter,
const ShortcutOperationCallback& shortcut_operation,
ShellUtil::ShortcutLocation location,
BrowserDistribution* dist,
ShellUtil::ShellChange level,
const scoped_refptr<ShellUtil::SharedCancellationFlag>& cancel) {
DCHECK(!shortcut_operation.is_null());
// There is no system-level Quick Launch shortcut folder.
if (level == ShellUtil::SYSTEM_LEVEL &&
location == ShellUtil::SHORTCUT_LOCATION_QUICK_LAUNCH) {
return true;
}
base::FilePath shortcut_folder;
if (!ShellUtil::GetShortcutPath(location, dist, level, &shortcut_folder)) {
LOG(WARNING) << "Cannot find path at location " << location;
return false;
}
bool success = true;
base::FileEnumerator enumerator(
shortcut_folder, false, base::FileEnumerator::FILES,
base::string16(L"*") + installer::kLnkExt);
base::FilePath target_path;
base::string16 args;
for (base::FilePath shortcut_path = enumerator.Next();
!shortcut_path.empty();
shortcut_path = enumerator.Next()) {
if (cancel.get() && cancel->data.IsSet())
return false;
if (base::win::ResolveShortcut(shortcut_path, &target_path, &args)) {
if (shortcut_filter.Run(target_path, args) &&
!shortcut_operation.Run(shortcut_path)) {
success = false;
}
} else {
LOG(ERROR) << "Cannot resolve shortcut at " << shortcut_path.value();
success = false;
}
}
return success;
}
// If the folder specified by {|location|, |dist|, |level|} is empty, remove it.
// Otherwise do nothing. Returns true on success, including the vacuous case
// where no deletion occurred because directory is non-empty.
bool RemoveShortcutFolderIfEmpty(ShellUtil::ShortcutLocation location,
BrowserDistribution* dist,
ShellUtil::ShellChange level) {
// Explicitly whitelist locations, since accidental calls can be very harmful.
if (location != ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_DIR &&
location != ShellUtil::SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR &&
location != ShellUtil::SHORTCUT_LOCATION_APP_SHORTCUTS) {
NOTREACHED();
return false;
}
base::FilePath shortcut_folder;
if (!ShellUtil::GetShortcutPath(location, dist, level, &shortcut_folder)) {
LOG(WARNING) << "Cannot find path at location " << location;
return false;
}
if (base::IsDirectoryEmpty(shortcut_folder) &&
!base::DeleteFile(shortcut_folder, true)) {
LOG(ERROR) << "Cannot remove folder " << shortcut_folder.value();
return false;
}
return true;
}
} // namespace
const wchar_t* ShellUtil::kRegDefaultIcon = L"\\DefaultIcon";
const wchar_t* ShellUtil::kRegShellPath = L"\\shell";
const wchar_t* ShellUtil::kRegShellOpen = L"\\shell\\open\\command";
const wchar_t* ShellUtil::kRegStartMenuInternet =
L"Software\\Clients\\StartMenuInternet";
const wchar_t* ShellUtil::kRegClasses = L"Software\\Classes";
const wchar_t* ShellUtil::kRegRegisteredApplications =
L"Software\\RegisteredApplications";
const wchar_t* ShellUtil::kRegVistaUrlPrefs =
L"Software\\Microsoft\\Windows\\Shell\\Associations\\UrlAssociations\\"
L"http\\UserChoice";
const wchar_t* ShellUtil::kAppPathsRegistryKey =
L"Software\\Microsoft\\Windows\\CurrentVersion\\App Paths";
const wchar_t* ShellUtil::kAppPathsRegistryPathName = L"Path";
const wchar_t* ShellUtil::kDefaultFileAssociations[] = {L".htm", L".html",
L".shtml", L".xht", L".xhtml", NULL};
const wchar_t* ShellUtil::kPotentialFileAssociations[] = {L".htm", L".html",
L".shtml", L".xht", L".xhtml", L".webp", NULL};
const wchar_t* ShellUtil::kBrowserProtocolAssociations[] = {L"ftp", L"http",
L"https", NULL};
const wchar_t* ShellUtil::kPotentialProtocolAssociations[] = {L"ftp", L"http",
L"https", L"irc", L"mailto", L"mms", L"news", L"nntp", L"sms", L"smsto",
L"tel", L"urn", L"webcal", NULL};
const wchar_t* ShellUtil::kRegUrlProtocol = L"URL Protocol";
const wchar_t* ShellUtil::kRegApplication = L"\\Application";
const wchar_t* ShellUtil::kRegAppUserModelId = L"AppUserModelId";
const wchar_t* ShellUtil::kRegApplicationDescription =
L"ApplicationDescription";
const wchar_t* ShellUtil::kRegApplicationName = L"ApplicationName";
const wchar_t* ShellUtil::kRegApplicationIcon = L"ApplicationIcon";
const wchar_t* ShellUtil::kRegApplicationCompany = L"ApplicationCompany";
const wchar_t* ShellUtil::kRegExePath = L"\\.exe";
const wchar_t* ShellUtil::kRegVerbOpen = L"open";
const wchar_t* ShellUtil::kRegVerbOpenNewWindow = L"opennewwindow";
const wchar_t* ShellUtil::kRegVerbRun = L"run";
const wchar_t* ShellUtil::kRegCommand = L"command";
const wchar_t* ShellUtil::kRegDelegateExecute = L"DelegateExecute";
const wchar_t* ShellUtil::kRegOpenWithProgids = L"OpenWithProgids";
ShellUtil::ShortcutProperties::ShortcutProperties(ShellChange level_in)
: level(level_in),
icon_index(0),
dual_mode(false),
pin_to_taskbar(false),
options(0U) {
}
ShellUtil::ShortcutProperties::~ShortcutProperties() {
}
bool ShellUtil::QuickIsChromeRegisteredInHKLM(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& suffix) {
return QuickIsChromeRegistered(dist, chrome_exe, suffix,
CONFIRM_SHELL_REGISTRATION_IN_HKLM);
}
bool ShellUtil::ShortcutLocationIsSupported(
ShellUtil::ShortcutLocation location) {
switch (location) {
case SHORTCUT_LOCATION_DESKTOP: // Falls through.
case SHORTCUT_LOCATION_QUICK_LAUNCH: // Falls through.
case SHORTCUT_LOCATION_START_MENU_ROOT: // Falls through.
case SHORTCUT_LOCATION_START_MENU_CHROME_DIR: // Falls through.
case SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR:
return true;
case SHORTCUT_LOCATION_TASKBAR_PINS:
return base::win::GetVersion() >= base::win::VERSION_WIN7;
case SHORTCUT_LOCATION_APP_SHORTCUTS:
return base::win::GetVersion() >= base::win::VERSION_WIN8;
default:
NOTREACHED();
return false;
}
}
bool ShellUtil::GetShortcutPath(ShellUtil::ShortcutLocation location,
BrowserDistribution* dist,
ShellChange level,
base::FilePath* path) {
DCHECK(path);
int dir_key = -1;
base::string16 folder_to_append;
switch (location) {
case SHORTCUT_LOCATION_DESKTOP:
dir_key = (level == CURRENT_USER) ? base::DIR_USER_DESKTOP :
base::DIR_COMMON_DESKTOP;
break;
case SHORTCUT_LOCATION_QUICK_LAUNCH:
// There is no support for a system-level Quick Launch shortcut.
DCHECK_EQ(level, CURRENT_USER);
dir_key = base::DIR_USER_QUICK_LAUNCH;
break;
case SHORTCUT_LOCATION_START_MENU_ROOT:
dir_key = (level == CURRENT_USER) ? base::DIR_START_MENU :
base::DIR_COMMON_START_MENU;
break;
case SHORTCUT_LOCATION_START_MENU_CHROME_DIR:
dir_key = (level == CURRENT_USER) ? base::DIR_START_MENU :
base::DIR_COMMON_START_MENU;
folder_to_append = dist->GetStartMenuShortcutSubfolder(
BrowserDistribution::SUBFOLDER_CHROME);
break;
case SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR:
dir_key = (level == CURRENT_USER) ? base::DIR_START_MENU :
base::DIR_COMMON_START_MENU;
folder_to_append = dist->GetStartMenuShortcutSubfolder(
BrowserDistribution::SUBFOLDER_APPS);
break;
case SHORTCUT_LOCATION_TASKBAR_PINS:
dir_key = base::DIR_TASKBAR_PINS;
break;
case SHORTCUT_LOCATION_APP_SHORTCUTS:
// TODO(huangs): Move GetAppShortcutsFolder() logic into base_paths_win.
return GetAppShortcutsFolder(dist, level, path);
default:
NOTREACHED();
return false;
}
if (!PathService::Get(dir_key, path) || path->empty()) {
NOTREACHED() << dir_key;
return false;
}
if (!folder_to_append.empty())
*path = path->Append(folder_to_append);
return true;
}
bool ShellUtil::CreateOrUpdateShortcut(
ShellUtil::ShortcutLocation location,
BrowserDistribution* dist,
const ShellUtil::ShortcutProperties& properties,
ShellUtil::ShortcutOperation operation) {
// Explicitly whitelist locations to which this is applicable.
if (location != SHORTCUT_LOCATION_DESKTOP &&
location != SHORTCUT_LOCATION_QUICK_LAUNCH &&
location != SHORTCUT_LOCATION_START_MENU_ROOT &&
location != SHORTCUT_LOCATION_START_MENU_CHROME_DIR &&
location != SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR) {
NOTREACHED();
return false;
}
DCHECK(dist);
// |pin_to_taskbar| is only acknowledged when first creating the shortcut.
DCHECK(!properties.pin_to_taskbar ||
operation == SHELL_SHORTCUT_CREATE_ALWAYS ||
operation == SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL);
base::FilePath user_shortcut_path;
base::FilePath system_shortcut_path;
if (location == SHORTCUT_LOCATION_QUICK_LAUNCH) {
// There is no system-level shortcut for Quick Launch.
DCHECK_EQ(properties.level, CURRENT_USER);
} else if (!GetShortcutPath(
location, dist, SYSTEM_LEVEL, &system_shortcut_path)) {
NOTREACHED();
return false;
}
base::string16 shortcut_name(
ExtractShortcutNameFromProperties(dist, properties));
system_shortcut_path = system_shortcut_path.Append(shortcut_name);
base::FilePath* chosen_path;
bool should_install_shortcut = true;
if (properties.level == SYSTEM_LEVEL) {
// Install the system-level shortcut if requested.
chosen_path = &system_shortcut_path;
} else if (operation != SHELL_SHORTCUT_CREATE_IF_NO_SYSTEM_LEVEL ||
system_shortcut_path.empty() ||
!base::PathExists(system_shortcut_path)) {
// Otherwise install the user-level shortcut, unless the system-level
// variant of this shortcut is present on the machine and |operation| states
// not to create a user-level shortcut in that case.
if (!GetShortcutPath(location, dist, CURRENT_USER, &user_shortcut_path)) {
NOTREACHED();
return false;
}
user_shortcut_path = user_shortcut_path.Append(shortcut_name);
chosen_path = &user_shortcut_path;
} else {
// Do not install any shortcut if we are told to install a user-level
// shortcut, but the system-level variant of that shortcut is present.
// Other actions (e.g., pinning) can still happen with respect to the
// existing system-level shortcut however.
chosen_path = &system_shortcut_path;
should_install_shortcut = false;
}
if (chosen_path == NULL || chosen_path->empty()) {
NOTREACHED();
return false;
}
base::win::ShortcutOperation shortcut_operation =
TranslateShortcutOperation(operation);
bool ret = true;
if (should_install_shortcut) {
// Make sure the parent directories exist when creating the shortcut.
if (shortcut_operation == base::win::SHORTCUT_CREATE_ALWAYS &&
!base::CreateDirectory(chosen_path->DirName())) {
NOTREACHED();
return false;
}
base::win::ShortcutProperties shortcut_properties(
TranslateShortcutProperties(properties));
ret = base::win::CreateOrUpdateShortcutLink(
*chosen_path, shortcut_properties, shortcut_operation);
}
if (ret && shortcut_operation == base::win::SHORTCUT_CREATE_ALWAYS &&
properties.pin_to_taskbar &&
base::win::GetVersion() >= base::win::VERSION_WIN7) {
ret = base::win::TaskbarPinShortcutLink(chosen_path->value().c_str());
if (!ret) {
LOG(ERROR) << "Failed to pin " << chosen_path->value();
}
}
return ret;
}
base::string16 ShellUtil::FormatIconLocation(const base::FilePath& icon_path,
int icon_index) {
base::string16 icon_string(icon_path.value());
icon_string.append(L",");
icon_string.append(base::IntToString16(icon_index));
return icon_string;
}
base::string16 ShellUtil::GetChromeShellOpenCmd(
const base::FilePath& chrome_exe) {
return L"\"" + chrome_exe.value() + L"\" -- \"%1\"";
}
base::string16 ShellUtil::GetChromeDelegateCommand(
const base::FilePath& chrome_exe) {
return L"\"" + chrome_exe.value() + L"\" -- %*";
}
void ShellUtil::GetRegisteredBrowsers(
BrowserDistribution* dist,
std::map<base::string16, base::string16>* browsers) {
DCHECK(dist);
DCHECK(browsers);
const base::string16 base_key(ShellUtil::kRegStartMenuInternet);
base::string16 client_path;
RegKey key;
base::string16 name;
base::string16 command;
// HKCU has precedence over HKLM for these registrations: http://goo.gl/xjczJ.
// Look in HKCU second to override any identical values found in HKLM.
const HKEY roots[] = { HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER };
for (int i = 0; i < arraysize(roots); ++i) {
const HKEY root = roots[i];
for (base::win::RegistryKeyIterator iter(root, base_key.c_str());
iter.Valid(); ++iter) {
client_path.assign(base_key).append(1, L'\\').append(iter.Name());
// Read the browser's name (localized according to install language).
if (key.Open(root, client_path.c_str(),
KEY_QUERY_VALUE) != ERROR_SUCCESS ||
key.ReadValue(NULL, &name) != ERROR_SUCCESS ||
name.empty() ||
name.find(dist->GetBaseAppName()) != base::string16::npos) {
continue;
}
// Read the browser's reinstall command.
if (key.Open(root, (client_path + L"\\InstallInfo").c_str(),
KEY_QUERY_VALUE) == ERROR_SUCCESS &&
key.ReadValue(kReinstallCommand, &command) == ERROR_SUCCESS &&
!command.empty()) {
(*browsers)[name] = command;
}
}
}
}
base::string16 ShellUtil::GetCurrentInstallationSuffix(
BrowserDistribution* dist,
const base::FilePath& chrome_exe) {
// This method is somewhat the opposite of GetInstallationSpecificSuffix().
// In this case we are not trying to determine the current suffix for the
// upcoming installation (i.e. not trying to stick to a currently bad
// registration style if one is present).
// Here we want to determine which suffix we should use at run-time.
// In order of preference, we prefer (for user-level installs):
// 1) Base 32 encoding of the md5 hash of the user's sid (new-style).
// 2) Username (old-style).
// 3) Unsuffixed (even worse).
base::string16 tested_suffix;
if (InstallUtil::IsPerUserInstall(chrome_exe) &&
(!GetUserSpecificRegistrySuffix(&tested_suffix) ||
!QuickIsChromeRegistered(dist, chrome_exe, tested_suffix,
CONFIRM_PROGID_REGISTRATION)) &&
(!GetOldUserSpecificRegistrySuffix(&tested_suffix) ||
!QuickIsChromeRegistered(dist, chrome_exe, tested_suffix,
CONFIRM_PROGID_REGISTRATION)) &&
!QuickIsChromeRegistered(dist, chrome_exe, tested_suffix.erase(),
CONFIRM_PROGID_REGISTRATION)) {
// If Chrome is not registered under any of the possible suffixes (e.g.
// tests, Canary, etc.): use the new-style suffix at run-time.
if (!GetUserSpecificRegistrySuffix(&tested_suffix))
NOTREACHED();
}
return tested_suffix;
}
base::string16 ShellUtil::GetApplicationName(BrowserDistribution* dist,
const base::FilePath& chrome_exe) {
base::string16 app_name = dist->GetBaseAppName();
app_name += GetCurrentInstallationSuffix(dist, chrome_exe);
return app_name;
}
base::string16 ShellUtil::GetBrowserModelId(BrowserDistribution* dist,
bool is_per_user_install) {
base::string16 app_id(dist->GetBaseAppId());
base::string16 suffix;
// TODO(robertshield): Temporary hack to make the kRegisterChromeBrowserSuffix
// apply to all registry values computed down in these murky depths.
base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
if (command_line.HasSwitch(
installer::switches::kRegisterChromeBrowserSuffix)) {
suffix = command_line.GetSwitchValueNative(
installer::switches::kRegisterChromeBrowserSuffix);
} else if (is_per_user_install && !GetUserSpecificRegistrySuffix(&suffix)) {
NOTREACHED();
}
// There is only one component (i.e. the suffixed appid) in this case, but it
// is still necessary to go through the appid constructor to make sure the
// returned appid is truncated if necessary.
std::vector<base::string16> components(1, app_id.append(suffix));
return BuildAppModelId(components);
}
base::string16 ShellUtil::BuildAppModelId(
const std::vector<base::string16>& components) {
DCHECK_GT(components.size(), 0U);
// Find the maximum numbers of characters allowed in each component
// (accounting for the dots added between each component).
const size_t available_chars =
installer::kMaxAppModelIdLength - (components.size() - 1);
const size_t max_component_length = available_chars / components.size();
// |max_component_length| should be at least 2; otherwise the truncation logic
// below breaks.
if (max_component_length < 2U) {
NOTREACHED();
return (*components.begin()).substr(0, installer::kMaxAppModelIdLength);
}
base::string16 app_id;
app_id.reserve(installer::kMaxAppModelIdLength);
for (std::vector<base::string16>::const_iterator it = components.begin();
it != components.end(); ++it) {
if (it != components.begin())
app_id.push_back(L'.');
const base::string16& component = *it;
DCHECK(!component.empty());
if (component.length() > max_component_length) {
// Append a shortened version of this component. Cut in the middle to try
// to avoid losing the unique parts of this component (which are usually
// at the beginning or end for things like usernames and paths).
app_id.append(component.c_str(), 0, max_component_length / 2);
app_id.append(component.c_str(),
component.length() - ((max_component_length + 1) / 2),
base::string16::npos);
} else {
app_id.append(component);
}
}
// No spaces are allowed in the AppUserModelId according to MSDN.
base::ReplaceChars(app_id, base::ASCIIToUTF16(" "), base::ASCIIToUTF16("_"),
&app_id);
return app_id;
}
ShellUtil::DefaultState ShellUtil::GetChromeDefaultState() {
base::FilePath app_path;
if (!PathService::Get(base::FILE_EXE, &app_path)) {
NOTREACHED();
return ShellUtil::UNKNOWN_DEFAULT;
}
return GetChromeDefaultStateFromPath(app_path);
}
ShellUtil::DefaultState ShellUtil::GetChromeDefaultStateFromPath(
const base::FilePath& chrome_exe) {
BrowserDistribution* distribution = BrowserDistribution::GetDistribution();
if (distribution->GetDefaultBrowserControlPolicy() ==
BrowserDistribution::DEFAULT_BROWSER_UNSUPPORTED) {
return NOT_DEFAULT;
}
// When we check for default browser we don't necessarily want to count file
// type handlers and icons as having changed the default browser status,
// since the user may have changed their shell settings to cause HTML files
// to open with a text editor for example. We also don't want to aggressively
// claim FTP, since the user may have a separate FTP client. It is an open
// question as to how to "heal" these settings. Perhaps the user should just
// re-run the installer or run with the --set-default-browser command line
// flag. There is doubtless some other key we can hook into to cause "Repair"
// to show up in Add/Remove programs for us.
static const wchar_t* const kChromeProtocols[] = { L"http", L"https" };
return ProbeProtocolHandlers(chrome_exe,
kChromeProtocols,
arraysize(kChromeProtocols));
}
ShellUtil::DefaultState ShellUtil::GetChromeDefaultProtocolClientState(
const base::string16& protocol) {
BrowserDistribution* distribution = BrowserDistribution::GetDistribution();
if (distribution->GetDefaultBrowserControlPolicy() ==
BrowserDistribution::DEFAULT_BROWSER_UNSUPPORTED) {
return NOT_DEFAULT;
}
if (protocol.empty())
return UNKNOWN_DEFAULT;
base::FilePath chrome_exe;
if (!PathService::Get(base::FILE_EXE, &chrome_exe)) {
NOTREACHED();
return ShellUtil::UNKNOWN_DEFAULT;
}
const wchar_t* const protocols[] = { protocol.c_str() };
return ProbeProtocolHandlers(chrome_exe,
protocols,
arraysize(protocols));
}
// static
bool ShellUtil::CanMakeChromeDefaultUnattended() {
return base::win::GetVersion() < base::win::VERSION_WIN8;
}
bool ShellUtil::MakeChromeDefault(BrowserDistribution* dist,
int shell_change,
const base::FilePath& chrome_exe,
bool elevate_if_not_admin) {
DCHECK(!(shell_change & ShellUtil::SYSTEM_LEVEL) || IsUserAnAdmin());
BrowserDistribution* distribution = BrowserDistribution::GetDistribution();
if (distribution->GetDefaultBrowserControlPolicy() !=
BrowserDistribution::DEFAULT_BROWSER_FULL_CONTROL) {
return false;
}
// Windows 8 does not permit making a browser default just like that.
// This process needs to be routed through the system's UI. Use
// ShowMakeChromeDefaultSystemUI instead (below).
if (!CanMakeChromeDefaultUnattended()) {
return false;
}
if (!ShellUtil::RegisterChromeBrowser(
dist, chrome_exe, base::string16(), elevate_if_not_admin)) {
return false;
}
bool ret = true;
// First use the new "recommended" way on Vista to make Chrome default
// browser.
base::string16 app_name = GetApplicationName(dist, chrome_exe);
if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
// On Windows Vista and Win7 we still can set ourselves via the
// the IApplicationAssociationRegistration interface.
VLOG(1) << "Registering Chrome as default browser on Vista.";
base::win::ScopedComPtr<IApplicationAssociationRegistration> pAAR;
HRESULT hr = pAAR.CreateInstance(CLSID_ApplicationAssociationRegistration,
NULL, CLSCTX_INPROC);
if (SUCCEEDED(hr)) {
for (int i = 0; ShellUtil::kBrowserProtocolAssociations[i] != NULL; i++) {
hr = pAAR->SetAppAsDefault(app_name.c_str(),
ShellUtil::kBrowserProtocolAssociations[i], AT_URLPROTOCOL);
if (!SUCCEEDED(hr)) {
ret = false;
LOG(ERROR) << "Failed to register as default for protocol "
<< ShellUtil::kBrowserProtocolAssociations[i]
<< " (" << hr << ")";
}
}
for (int i = 0; ShellUtil::kDefaultFileAssociations[i] != NULL; i++) {
hr = pAAR->SetAppAsDefault(app_name.c_str(),
ShellUtil::kDefaultFileAssociations[i], AT_FILEEXTENSION);
if (!SUCCEEDED(hr)) {
ret = false;
LOG(ERROR) << "Failed to register as default for file extension "
<< ShellUtil::kDefaultFileAssociations[i]
<< " (" << hr << ")";
}
}
}
}
if (!RegisterChromeAsDefaultXPStyle(dist, shell_change, chrome_exe))
ret = false;
// Send Windows notification event so that it can update icons for
// file associations.
SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
return ret;
}
bool ShellUtil::ShowMakeChromeDefaultSystemUI(
BrowserDistribution* dist,
const base::FilePath& chrome_exe) {
DCHECK_GE(base::win::GetVersion(), base::win::VERSION_WIN8);
if (dist->GetDefaultBrowserControlPolicy() !=
BrowserDistribution::DEFAULT_BROWSER_FULL_CONTROL) {
return false;
}
if (!RegisterChromeBrowser(dist, chrome_exe, base::string16(), true))
return false;
bool succeeded = true;
bool is_default = (GetChromeDefaultState() == IS_DEFAULT);
if (!is_default) {
if (base::win::GetVersion() < base::win::VERSION_WIN10) {
// On Windows 8, you can't set yourself as the default handler
// programatically. In other words IApplicationAssociationRegistration
// has been rendered useless. What you can do is to launch
// "Set Program Associations" section of the "Default Programs"
// control panel, which is a mess, or pop the concise "How you want to
// open webpages?" dialog. We choose the latter.
succeeded = LaunchSelectDefaultProtocolHandlerDialog(L"http");
} else {
// On Windows 10, you can't even launch the associations dialog.
// So we launch the settings dialog. Quoting from MSDN: "The Open With
// dialog box can no longer be used to change the default program used to
// open a file extension. You can only use SHOpenWithDialog to open
// a single file."
succeeded = LaunchDefaultAppsSettingsModernDialog();
}
is_default = (succeeded && GetChromeDefaultState() == IS_DEFAULT);
}
if (succeeded && is_default)
RegisterChromeAsDefaultXPStyle(dist, CURRENT_USER, chrome_exe);
return succeeded;
}
bool ShellUtil::MakeChromeDefaultProtocolClient(
BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& protocol) {
if (dist->GetDefaultBrowserControlPolicy() !=
BrowserDistribution::DEFAULT_BROWSER_FULL_CONTROL) {
return false;
}
if (!RegisterChromeForProtocol(
dist, chrome_exe, base::string16(), protocol, true))
return false;
// Windows 8 does not permit making a browser default just like that.
// This process needs to be routed through the system's UI. Use
// ShowMakeChromeDefaultProocolClientSystemUI instead (below).
if (!CanMakeChromeDefaultUnattended())
return false;
bool ret = true;
// First use the new "recommended" way on Vista to make Chrome default
// protocol handler.
if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
VLOG(1) << "Registering Chrome as default handler for " << protocol
<< " on Vista.";
base::win::ScopedComPtr<IApplicationAssociationRegistration> pAAR;
HRESULT hr = pAAR.CreateInstance(CLSID_ApplicationAssociationRegistration,
NULL, CLSCTX_INPROC);
if (SUCCEEDED(hr)) {
base::string16 app_name = GetApplicationName(dist, chrome_exe);
hr = pAAR->SetAppAsDefault(app_name.c_str(), protocol.c_str(),
AT_URLPROTOCOL);
}
if (!SUCCEEDED(hr)) {
ret = false;
LOG(ERROR) << "Could not make Chrome default protocol client (Vista):"
<< " HRESULT=" << hr << ".";
}
}
// Now use the old way to associate Chrome with the desired protocol. This
// should not be required on Vista+, but since some applications still read
// Software\Classes\<protocol> key directly, do this on Vista+ also.
if (!RegisterChromeAsDefaultProtocolClientXPStyle(dist, chrome_exe, protocol))
ret = false;
return ret;
}
bool ShellUtil::ShowMakeChromeDefaultProtocolClientSystemUI(
BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& protocol) {
DCHECK_GE(base::win::GetVersion(), base::win::VERSION_WIN8);
if (dist->GetDefaultBrowserControlPolicy() !=
BrowserDistribution::DEFAULT_BROWSER_FULL_CONTROL) {
return false;
}
if (!RegisterChromeForProtocol(
dist, chrome_exe, base::string16(), protocol, true))
return false;
bool succeeded = true;
bool is_default = (
GetChromeDefaultProtocolClientState(protocol) == IS_DEFAULT);
if (!is_default) {
// On Windows 8, you can't set yourself as the default handler
// programatically. In other words IApplicationAssociationRegistration
// has been rendered useless. What you can do is to launch
// "Set Program Associations" section of the "Default Programs"
// control panel, which is a mess, or pop the concise "How you want to open
// links of this type (protocol)?" dialog. We choose the latter.
succeeded = LaunchSelectDefaultProtocolHandlerDialog(protocol.c_str());
is_default = (succeeded &&
GetChromeDefaultProtocolClientState(protocol) == IS_DEFAULT);
}
if (succeeded && is_default)
RegisterChromeAsDefaultProtocolClientXPStyle(dist, chrome_exe, protocol);
return succeeded;
}
bool ShellUtil::RegisterChromeBrowser(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& unique_suffix,
bool elevate_if_not_admin) {
if (dist->GetDefaultBrowserControlPolicy() ==
BrowserDistribution::DEFAULT_BROWSER_UNSUPPORTED) {
return false;
}
base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
base::string16 suffix;
if (!unique_suffix.empty()) {
suffix = unique_suffix;
} else if (command_line.HasSwitch(
installer::switches::kRegisterChromeBrowserSuffix)) {
suffix = command_line.GetSwitchValueNative(
installer::switches::kRegisterChromeBrowserSuffix);
} else if (!GetInstallationSpecificSuffix(dist, chrome_exe, &suffix)) {
return false;
}
RemoveRunVerbOnWindows8(dist, chrome_exe);
bool user_level = InstallUtil::IsPerUserInstall(chrome_exe);
HKEY root = DetermineRegistrationRoot(user_level);
// Look only in HKLM for system-level installs (otherwise, if a user-level
// install is also present, it will lead IsChromeRegistered() to think this
// system-level install isn't registered properly as it is shadowed by the
// user-level install's registrations).
uint32 look_for_in = user_level ?
RegistryEntry::LOOK_IN_HKCU_THEN_HKLM : RegistryEntry::LOOK_IN_HKLM;
// Check if chrome is already registered with this suffix.
if (IsChromeRegistered(dist, chrome_exe, suffix, look_for_in))
return true;
bool result = true;
if (root == HKEY_CURRENT_USER || IsUserAnAdmin()) {
// Do the full registration if we can do it at user-level or if the user is
// an admin.
ScopedVector<RegistryEntry> progid_and_appreg_entries;
ScopedVector<RegistryEntry> shell_entries;
RegistryEntry::GetChromeProgIdEntries(
dist, chrome_exe, suffix, &progid_and_appreg_entries);
RegistryEntry::GetChromeAppRegistrationEntries(
chrome_exe, suffix, &progid_and_appreg_entries);
RegistryEntry::GetShellIntegrationEntries(
dist, chrome_exe, suffix, &shell_entries);
result = (AddRegistryEntries(root, progid_and_appreg_entries) &&
AddRegistryEntries(root, shell_entries));
} else if (elevate_if_not_admin &&
base::win::GetVersion() >= base::win::VERSION_VISTA &&
ElevateAndRegisterChrome(dist, chrome_exe, suffix, base::string16())) {
// If the user is not an admin and OS is between Vista and Windows 7
// inclusively, try to elevate and register. This is only intended for
// user-level installs as system-level installs should always be run with
// admin rights.
result = true;
} else {
// If we got to this point then all we can do is create ProgId and basic app
// registrations under HKCU.
ScopedVector<RegistryEntry> entries;
RegistryEntry::GetChromeProgIdEntries(
dist, chrome_exe, base::string16(), &entries);
// Prefer to use |suffix|; unless Chrome's ProgIds are already registered
// with no suffix (as per the old registration style): in which case some
// other registry entries could refer to them and since we were not able to
// set our HKLM entries above, we are better off not altering these here.
if (!AreEntriesRegistered(entries, RegistryEntry::LOOK_IN_HKCU)) {
if (!suffix.empty()) {
entries.clear();
RegistryEntry::GetChromeProgIdEntries(
dist, chrome_exe, suffix, &entries);
RegistryEntry::GetChromeAppRegistrationEntries(
chrome_exe, suffix, &entries);
}
result = AddRegistryEntries(HKEY_CURRENT_USER, entries);
} else {
// The ProgId is registered unsuffixed in HKCU, also register the app with
// Windows in HKCU (this was not done in the old registration style and
// thus needs to be done after the above check for the unsuffixed
// registration).
entries.clear();
RegistryEntry::GetChromeAppRegistrationEntries(
chrome_exe, base::string16(), &entries);
result = AddRegistryEntries(HKEY_CURRENT_USER, entries);
}
}
SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
return result;
}
bool ShellUtil::RegisterChromeForProtocol(BrowserDistribution* dist,
const base::FilePath& chrome_exe,
const base::string16& unique_suffix,
const base::string16& protocol,
bool elevate_if_not_admin) {
if (dist->GetDefaultBrowserControlPolicy() ==
BrowserDistribution::DEFAULT_BROWSER_UNSUPPORTED) {
return false;
}
base::string16 suffix;
if (!unique_suffix.empty()) {
suffix = unique_suffix;
} else if (!GetInstallationSpecificSuffix(dist, chrome_exe, &suffix)) {
return false;
}
bool user_level = InstallUtil::IsPerUserInstall(chrome_exe);
HKEY root = DetermineRegistrationRoot(user_level);
// Look only in HKLM for system-level installs (otherwise, if a user-level
// install is also present, it could lead IsChromeRegisteredForProtocol() to
// think this system-level install isn't registered properly as it may be
// shadowed by the user-level install's registrations).
uint32 look_for_in = user_level ?
RegistryEntry::LOOK_IN_HKCU_THEN_HKLM : RegistryEntry::LOOK_IN_HKLM;
// Check if chrome is already registered with this suffix.
if (IsChromeRegisteredForProtocol(dist, suffix, protocol, look_for_in))
return true;
if (root == HKEY_CURRENT_USER || IsUserAnAdmin()) {
// We can do this operation directly.
// First, make sure Chrome is fully registered on this machine.
if (!RegisterChromeBrowser(dist, chrome_exe, suffix, false))
return false;
// Write in the capabillity for the protocol.
ScopedVector<RegistryEntry> entries;
RegistryEntry::GetProtocolCapabilityEntries(dist, suffix, protocol,
&entries);
return AddRegistryEntries(root, entries);
} else if (elevate_if_not_admin &&
base::win::GetVersion() >= base::win::VERSION_VISTA) {
// Elevate to do the whole job
return ElevateAndRegisterChrome(dist, chrome_exe, suffix, protocol);
} else {
// Admin rights are required to register capabilities before Windows 8.
return false;
}
}
// static
bool ShellUtil::RemoveShortcuts(ShellUtil::ShortcutLocation location,
BrowserDistribution* dist,
ShellChange level,
const base::FilePath& target_exe) {
if (!ShellUtil::ShortcutLocationIsSupported(location))
return true; // Vacuous success.
FilterTargetEq shortcut_filter(target_exe, false);
// Main operation to apply to each shortcut in the directory specified.
ShortcutOperationCallback shortcut_operation(
location == SHORTCUT_LOCATION_TASKBAR_PINS ?
base::Bind(&ShortcutOpUnpin) : base::Bind(&ShortcutOpDelete));
bool success = BatchShortcutAction(shortcut_filter.AsShortcutFilterCallback(),
shortcut_operation, location, dist, level,
NULL);
// Remove chrome-specific shortcut folders if they are now empty.
if (success &&
(location == SHORTCUT_LOCATION_START_MENU_CHROME_DIR ||
location == SHORTCUT_LOCATION_START_MENU_CHROME_APPS_DIR ||
location == SHORTCUT_LOCATION_APP_SHORTCUTS)) {
success = RemoveShortcutFolderIfEmpty(location, dist, level);
}
return success;
}
// static
bool ShellUtil::RetargetShortcutsWithArgs(
ShellUtil::ShortcutLocation location,
BrowserDistribution* dist,
ShellChange level,
const base::FilePath& old_target_exe,
const base::FilePath& new_target_exe) {
if (!ShellUtil::ShortcutLocationIsSupported(location))
return true; // Vacuous success.
FilterTargetEq shortcut_filter(old_target_exe, true);
ShortcutOperationCallback shortcut_operation(
base::Bind(&ShortcutOpRetarget, old_target_exe, new_target_exe));
return BatchShortcutAction(shortcut_filter.AsShortcutFilterCallback(),
shortcut_operation, location, dist, level, NULL);
}
// static
bool ShellUtil::ShortcutListMaybeRemoveUnknownArgs(
ShellUtil::ShortcutLocation location,
BrowserDistribution* dist,
ShellChange level,
const base::FilePath& chrome_exe,
bool do_removal,
const scoped_refptr<SharedCancellationFlag>& cancel,
std::vector<std::pair<base::FilePath, base::string16> >* shortcuts) {
if (!ShellUtil::ShortcutLocationIsSupported(location))
return false;
DCHECK(dist);
FilterTargetEq shortcut_filter(chrome_exe, true);
ShortcutOperationCallback shortcut_operation(
base::Bind(&ShortcutOpListOrRemoveUnknownArgs, do_removal, shortcuts));
return BatchShortcutAction(shortcut_filter.AsShortcutFilterCallback(),
shortcut_operation, location, dist, level, cancel);
}
bool ShellUtil::GetUserSpecificRegistrySuffix(base::string16* suffix) {
// Use a thread-safe cache for the user's suffix.
static base::LazyInstance<UserSpecificRegistrySuffix>::Leaky suffix_instance =
LAZY_INSTANCE_INITIALIZER;
return suffix_instance.Get().GetSuffix(suffix);
}
bool ShellUtil::GetOldUserSpecificRegistrySuffix(base::string16* suffix) {
wchar_t user_name[256];
DWORD size = arraysize(user_name);
if (::GetUserName(user_name, &size) == 0 || size < 1) {
NOTREACHED();
return false;
}
suffix->reserve(size);
suffix->assign(1, L'.');
suffix->append(user_name, size - 1);
return true;
}
base::string16 ShellUtil::ByteArrayToBase32(const uint8* bytes, size_t size) {
static const char kEncoding[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";
// Eliminate special cases first.
if (size == 0) {
return base::string16();
} else if (size == 1) {
base::string16 ret;
ret.push_back(kEncoding[(bytes[0] & 0xf8) >> 3]);
ret.push_back(kEncoding[(bytes[0] & 0x07) << 2]);
return ret;
} else if (size >= std::numeric_limits<size_t>::max() / 8) {
// If |size| is too big, the calculation of |encoded_length| below will
// overflow.
NOTREACHED();
return base::string16();
}
// Overestimate the number of bits in the string by 4 so that dividing by 5
// is the equivalent of rounding up the actual number of bits divided by 5.
const size_t encoded_length = (size * 8 + 4) / 5;
base::string16 ret;
ret.reserve(encoded_length);
// A bit stream which will be read from the left and appended to from the
// right as it's emptied.
uint16 bit_stream = (bytes[0] << 8) + bytes[1];
size_t next_byte_index = 2;
int free_bits = 0;
while (free_bits < 16) {
// Extract the 5 leftmost bits in the stream
ret.push_back(kEncoding[(bit_stream & 0xf800) >> 11]);
bit_stream <<= 5;
free_bits += 5;
// If there is enough room in the bit stream, inject another byte (if there
// are any left...).
if (free_bits >= 8 && next_byte_index < size) {
free_bits -= 8;
bit_stream += bytes[next_byte_index++] << free_bits;
}
}
DCHECK_EQ(ret.length(), encoded_length);
return ret;
}
// static
bool ShellUtil::AddFileAssociations(
const base::string16& prog_id,
const base::CommandLine& command_line,
const base::string16& file_type_name,
const base::FilePath& icon_path,
const std::set<base::string16>& file_extensions) {
ScopedVector<RegistryEntry> entries;
// Create a class for this app.
RegistryEntry::ApplicationInfo app_info;
app_info.prog_id = prog_id;
app_info.file_type_name = file_type_name;
app_info.file_type_icon_path = icon_path;
app_info.file_type_icon_index = 0;
app_info.command_line = command_line.GetCommandLineStringWithPlaceholders();
RegistryEntry::GetProgIdEntries(app_info, &entries);
// Associate each extension that the app can handle with the class. Set this
// app as the default handler if and only if there is no existing default.
for (std::set<base::string16>::const_iterator it = file_extensions.begin();
it != file_extensions.end();
++it) {
// Do not allow empty file extensions, or extensions beginning with a '.'.
DCHECK(!it->empty());
DCHECK_NE(L'.', (*it)[0]);
base::string16 ext(1, L'.');
ext.append(*it);
RegistryEntry::GetAppExtRegistrationEntries(prog_id, ext, &entries);
// Regstering as the default will have no effect on Windows 8 (see
// documentation for GetAppDefaultRegistrationEntries). However, if our app
// is the only handler, it will automatically become the default, so the
// same effect is achieved.
RegistryEntry::GetAppDefaultRegistrationEntries(
prog_id, ext, false, &entries);
}
return AddRegistryEntries(HKEY_CURRENT_USER, entries);
}
// static
bool ShellUtil::DeleteFileAssociations(const base::string16& prog_id) {
// Delete the key HKEY_CURRENT_USER\Software\Classes\PROGID.
base::string16 key_path(ShellUtil::kRegClasses);
key_path.push_back(base::FilePath::kSeparators[0]);
key_path.append(prog_id);
return InstallUtil::DeleteRegistryKey(
HKEY_CURRENT_USER, key_path, WorkItem::kWow64Default);
// TODO(mgiuca): Remove the extension association entries. This requires that
// the extensions associated with a particular prog_id are stored in that
// prog_id's key.
}