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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.
#include "chrome/browser/policy/policy_loader_mac.h"
#include <string>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/file_util.h"
#include "base/mac/foundation_util.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/path_service.h"
#include "base/platform_file.h"
#include "base/sys_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/policy/policy_bundle.h"
#include "chrome/browser/policy/policy_map.h"
#include "chrome/browser/policy/preferences_mac.h"
#include "chrome/common/chrome_paths.h"
#include "policy/policy_constants.h"
using base::mac::CFCast;
using base::mac::ScopedCFTypeRef;
namespace policy {
namespace {
FilePath GetManagedPolicyPath() {
// This constructs the path to the plist file in which Mac OS X stores the
// managed preference for the application. This is undocumented and therefore
// fragile, but if it doesn't work out, AsyncPolicyLoader has a task that
// polls periodically in order to reload managed preferences later even if we
// missed the change.
FilePath path;
if (!PathService::Get(chrome::DIR_MANAGED_PREFS, &path))
return FilePath();
CFBundleRef bundle(CFBundleGetMainBundle());
if (!bundle)
return FilePath();
CFStringRef bundle_id = CFBundleGetIdentifier(bundle);
if (!bundle_id)
return FilePath();
return path.Append(base::SysCFStringRefToUTF8(bundle_id) + ".plist");
}
// Callback function for CFDictionaryApplyFunction. |key| and |value| are an
// entry of the CFDictionary that should be converted into an equivalent entry
// in the DictionaryValue in |context|.
void DictionaryEntryToValue(const void* key, const void* value, void* context) {
if (CFStringRef cf_key = CFCast<CFStringRef>(key)) {
base::Value* converted =
PolicyLoaderMac::CreateValueFromProperty(
static_cast<CFPropertyListRef>(value));
if (converted) {
const std::string string = base::SysCFStringRefToUTF8(cf_key);
static_cast<base::DictionaryValue *>(context)->Set(string, converted);
}
}
}
// Callback function for CFArrayApplyFunction. |value| is an entry of the
// CFArray that should be converted into an equivalent entry in the ListValue
// in |context|.
void ArrayEntryToValue(const void* value, void* context) {
base::Value* converted =
PolicyLoaderMac::CreateValueFromProperty(
static_cast<CFPropertyListRef>(value));
if (converted)
static_cast<base::ListValue *>(context)->Append(converted);
}
} // namespace
PolicyLoaderMac::PolicyLoaderMac(const PolicyDefinitionList* policy_list,
MacPreferences* preferences)
: policy_list_(policy_list),
preferences_(preferences),
managed_policy_path_(GetManagedPolicyPath()) {}
PolicyLoaderMac::~PolicyLoaderMac() {}
void PolicyLoaderMac::InitOnFile() {
if (!managed_policy_path_.empty()) {
watcher_.Watch(
managed_policy_path_, false,
base::Bind(&PolicyLoaderMac::OnFileUpdated, base::Unretained(this)));
}
}
scoped_ptr<PolicyBundle> PolicyLoaderMac::Load() {
preferences_->AppSynchronize(kCFPreferencesCurrentApplication);
scoped_ptr<PolicyBundle> bundle(new PolicyBundle());
PolicyMap& chrome_policy =
bundle->Get(PolicyNamespace(POLICY_DOMAIN_CHROME, std::string()));
const PolicyDefinitionList::Entry* current;
for (current = policy_list_->begin; current != policy_list_->end; ++current) {
base::mac::ScopedCFTypeRef<CFStringRef> name(
base::SysUTF8ToCFStringRef(current->name));
base::mac::ScopedCFTypeRef<CFPropertyListRef> value(
preferences_->CopyAppValue(name, kCFPreferencesCurrentApplication));
if (!value.get())
continue;
bool forced =
preferences_->AppValueIsForced(name, kCFPreferencesCurrentApplication);
PolicyLevel level = forced ? POLICY_LEVEL_MANDATORY :
POLICY_LEVEL_RECOMMENDED;
// TODO(joaodasilva): figure the policy scope.
base::Value* policy = CreateValueFromProperty(value);
if (policy)
chrome_policy.Set(current->name, level, POLICY_SCOPE_USER, policy);
}
return bundle.Pass();
}
base::Time PolicyLoaderMac::LastModificationTime() {
base::PlatformFileInfo file_info;
if (!file_util::GetFileInfo(managed_policy_path_, &file_info) ||
file_info.is_directory) {
return base::Time();
}
return file_info.last_modified;
}
// static
base::Value* PolicyLoaderMac::CreateValueFromProperty(
CFPropertyListRef property) {
if (CFCast<CFNullRef>(property))
return base::Value::CreateNullValue();
if (CFBooleanRef boolean = CFCast<CFBooleanRef>(property))
return base::Value::CreateBooleanValue(CFBooleanGetValue(boolean));
if (CFNumberRef number = CFCast<CFNumberRef>(property)) {
// CFNumberGetValue() converts values implicitly when the conversion is not
// lossy. Check the type before trying to convert.
if (CFNumberIsFloatType(number)) {
double double_value;
if (CFNumberGetValue(number, kCFNumberDoubleType, &double_value))
return base::Value::CreateDoubleValue(double_value);
} else {
int int_value;
if (CFNumberGetValue(number, kCFNumberIntType, &int_value))
return base::Value::CreateIntegerValue(int_value);
}
}
if (CFStringRef string = CFCast<CFStringRef>(property))
return base::Value::CreateStringValue(base::SysCFStringRefToUTF8(string));
if (CFDictionaryRef dict = CFCast<CFDictionaryRef>(property)) {
base::DictionaryValue* dict_value = new base::DictionaryValue();
CFDictionaryApplyFunction(dict, DictionaryEntryToValue, dict_value);
return dict_value;
}
if (CFArrayRef array = CFCast<CFArrayRef>(property)) {
base::ListValue* list_value = new base::ListValue();
CFArrayApplyFunction(array,
CFRangeMake(0, CFArrayGetCount(array)),
ArrayEntryToValue,
list_value);
return list_value;
}
return NULL;
}
void PolicyLoaderMac::OnFileUpdated(const FilePath& path, bool error) {
if (!error)
Reload(false);
}
} // namespace policy
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