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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/smb_client/smb_persisted_share_registry.h"
#include <utility>
#include "base/base64.h"
#include "base/check.h"
#include "base/logging.h"
#include "base/values.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/pref_names.h"
#include "components/pref_registry/pref_registry_syncable.h"
#include "components/prefs/scoped_user_pref_update.h"
namespace ash::smb_client {
namespace {
constexpr char kShareUrlKey[] = "share_url";
constexpr char kDisplayNameKey[] = "display_name";
constexpr char kUsernameKey[] = "username";
constexpr char kWorkgroupKey[] = "workgroup";
constexpr char kUseKerberosKey[] = "use_kerberos";
constexpr char kPasswordSaltKey[] = "password_salt";
base::Value ShareToDict(const SmbShareInfo& share) {
base::Value::Dict dict = base::Value::Dict()
.Set(kShareUrlKey, share.share_url().ToString())
.Set(kDisplayNameKey, share.display_name())
.Set(kUseKerberosKey, share.use_kerberos());
if (!share.username().empty()) {
dict.Set(kUsernameKey, share.username());
}
if (!share.workgroup().empty()) {
dict.Set(kWorkgroupKey, share.workgroup());
}
if (!share.password_salt().empty()) {
// Blob base::Values can't be stored in prefs, so store as a base64 encoded
// string.
dict.Set(kPasswordSaltKey, base::Base64Encode(share.password_salt()));
}
return base::Value(std::move(dict));
}
std::string GetStringValue(const base::Value::Dict& dict,
const std::string& key) {
const std::string* value = dict.FindString(key);
if (!value) {
return {};
}
return *value;
}
std::vector<uint8_t> GetEncodedBinaryValue(const base::Value::Dict& dict,
const std::string& key) {
const std::string* encoded_value = dict.FindString(key);
if (!encoded_value) {
return {};
}
std::string decoded_value;
if (!base::Base64Decode(*encoded_value, &decoded_value)) {
LOG(ERROR) << "Unable to decode base64-encoded binary pref from key: "
<< key;
return {};
}
return {decoded_value.begin(), decoded_value.end()};
}
std::optional<SmbShareInfo> DictToShare(const base::Value::Dict& dict) {
std::string share_url = GetStringValue(dict, kShareUrlKey);
if (share_url.empty()) {
return {};
}
SmbUrl url(share_url);
DCHECK(url.IsValid());
SmbShareInfo info(url, GetStringValue(dict, kDisplayNameKey),
GetStringValue(dict, kUsernameKey),
GetStringValue(dict, kWorkgroupKey),
dict.FindBool(kUseKerberosKey).value_or(false),
GetEncodedBinaryValue(dict, kPasswordSaltKey));
return std::make_optional(std::move(info));
}
} // namespace
// static
void SmbPersistedShareRegistry::RegisterProfilePrefs(
user_prefs::PrefRegistrySyncable* registry) {
registry->RegisterListPref(prefs::kNetworkFileSharesSavedShares);
}
SmbPersistedShareRegistry::SmbPersistedShareRegistry(Profile* profile)
: profile_(profile) {}
void SmbPersistedShareRegistry::Save(const SmbShareInfo& share) {
ScopedListPrefUpdate pref(profile_->GetPrefs(),
prefs::kNetworkFileSharesSavedShares);
base::Value::List& share_list = pref.Get();
for (base::Value& item : share_list) {
if (GetStringValue(item.GetDict(), kShareUrlKey) ==
share.share_url().ToString()) {
item = ShareToDict(share);
return;
}
}
pref->Append(ShareToDict(share));
return;
}
void SmbPersistedShareRegistry::Delete(const SmbUrl& share_url) {
ScopedListPrefUpdate pref(profile_->GetPrefs(),
prefs::kNetworkFileSharesSavedShares);
base::Value::List& list_update = pref.Get();
for (auto it = list_update.begin(); it != list_update.end(); ++it) {
if (GetStringValue(it->GetDict(), kShareUrlKey) == share_url.ToString()) {
list_update.erase(it);
return;
}
}
}
std::optional<SmbShareInfo> SmbPersistedShareRegistry::Get(
const SmbUrl& share_url) const {
const base::Value& pref =
profile_->GetPrefs()->GetValue(prefs::kNetworkFileSharesSavedShares);
for (const base::Value& entry : pref.GetList()) {
if (GetStringValue(entry.GetDict(), kShareUrlKey) == share_url.ToString()) {
return DictToShare(entry.GetDict());
}
}
return {};
}
std::vector<SmbShareInfo> SmbPersistedShareRegistry::GetAll() const {
const base::Value& pref =
profile_->GetPrefs()->GetValue(prefs::kNetworkFileSharesSavedShares);
std::vector<SmbShareInfo> shares;
for (const auto& entry : pref.GetList()) {
std::optional<SmbShareInfo> info = DictToShare(entry.GetDict());
if (info) {
shares.push_back(std::move(*info));
}
}
return shares;
}
} // namespace ash::smb_client
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