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// Copyright 2023 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/sync/test/integration/password_sharing_invitation_helper.h"
#include <memory>
#include <optional>
#include <vector>
#include "base/containers/span.h"
#include "base/uuid.h"
#include "components/sync/engine/nigori/cross_user_sharing_public_key.h"
#include "components/sync/nigori/cryptographer_impl.h"
namespace password_sharing_helper {
namespace {
constexpr char kSignonRealm[] = "signon_realm";
constexpr char kOrigin[] = "http://abc.com/";
constexpr char kUsernameElement[] = "username_element";
constexpr char kPasswordElement[] = "password_element";
constexpr char kPasswordDisplayName[] = "password_display_name";
constexpr char kPasswordAvatarUrl[] = "http://avatar.url/";
constexpr char kSenderEmail[] = "sender@gmail.com";
constexpr char kSenderDisplayName[] = "Sender Name";
constexpr char kSenderProfileImageUrl[] = "http://sender.url/image";
constexpr int kDefaultKeyVersion = 0;
sync_pb::CrossUserSharingPublicKey PublicKeyToProto(
const syncer::CrossUserSharingPublicKey& public_key) {
sync_pb::CrossUserSharingPublicKey proto;
auto raw_public_key = public_key.GetRawPublicKey();
proto.set_x25519_public_key(
std::string(raw_public_key.begin(), raw_public_key.end()));
proto.set_version(kDefaultKeyVersion);
return proto;
}
std::unique_ptr<syncer::CryptographerImpl> InitializeCryptographer(
const syncer::CrossUserSharingPublicPrivateKeyPair& key_pair) {
std::unique_ptr<syncer::CryptographerImpl> cryptographer =
syncer::CryptographerImpl::CreateEmpty();
// Clone `key_pair` since the cryptographer requires it to be moved.
std::optional<syncer::CrossUserSharingPublicPrivateKeyPair> key_pair_copy =
syncer::CrossUserSharingPublicPrivateKeyPair::CreateByImport(
key_pair.GetRawPrivateKey());
CHECK(key_pair_copy);
cryptographer->SetKeyPair(std::move(key_pair_copy.value()),
kDefaultKeyVersion);
cryptographer->SelectDefaultCrossUserSharingKey(kDefaultKeyVersion);
return cryptographer;
}
// Encrypts the invitation data to simulate the sending client.
std::vector<uint8_t> EncryptInvitationData(
const sync_pb::PasswordSharingInvitationData& unencrypted_password_data,
const sync_pb::CrossUserSharingPublicKey& recipient_public_key,
const syncer::CrossUserSharingPublicPrivateKeyPair& sender_key_pair) {
std::unique_ptr<syncer::CryptographerImpl> sender_cryptographer =
InitializeCryptographer(sender_key_pair);
std::string serialized_data;
bool success = unencrypted_password_data.SerializeToString(&serialized_data);
CHECK(success);
std::optional<std::vector<uint8_t>> result =
sender_cryptographer->AuthEncryptForCrossUserSharing(
base::as_byte_span(serialized_data),
base::as_byte_span(recipient_public_key.x25519_public_key()));
CHECK(result);
return result.value();
}
} // namespace
sync_pb::PasswordSharingInvitationData DecryptInvitationData(
const std::string& encrypted_data,
const sync_pb::CrossUserSharingPublicKey& sender_public_key,
const syncer::CrossUserSharingPublicPrivateKeyPair& recipient_key_pair) {
std::unique_ptr<syncer::CryptographerImpl> recipient_cryptographer =
InitializeCryptographer(recipient_key_pair);
std::optional<std::vector<uint8_t>> decrypted_data =
recipient_cryptographer->AuthDecryptForCrossUserSharing(
base::as_byte_span(encrypted_data),
base::as_byte_span(sender_public_key.x25519_public_key()),
kDefaultKeyVersion);
CHECK(decrypted_data);
sync_pb::PasswordSharingInvitationData invitation_data;
CHECK(invitation_data.ParseFromArray(decrypted_data->data(),
decrypted_data->size()));
return invitation_data;
}
sync_pb::IncomingPasswordSharingInvitationSpecifics
CreateEncryptedIncomingInvitationSpecifics(
const sync_pb::PasswordSharingInvitationData& invitation_data,
const sync_pb::UserDisplayInfo& sender_display_info,
const sync_pb::CrossUserSharingPublicKey& recipient_public_key,
const syncer::CrossUserSharingPublicPrivateKeyPair& sender_key_pair) {
sync_pb::IncomingPasswordSharingInvitationSpecifics specifics;
std::vector<uint8_t> encrypted_password = EncryptInvitationData(
invitation_data, recipient_public_key, sender_key_pair);
specifics.set_encrypted_password_sharing_invitation_data(
std::string(encrypted_password.begin(), encrypted_password.end()));
specifics.set_guid(base::Uuid::GenerateRandomV4().AsLowercaseString());
specifics.set_recipient_key_version(recipient_public_key.version());
std::optional<syncer::CrossUserSharingPublicKey> sender_public_key =
syncer::CrossUserSharingPublicKey::CreateByImport(
sender_key_pair.GetRawPublicKey());
CHECK(sender_public_key);
sync_pb::UserInfo* sender_info = specifics.mutable_sender_info();
sender_info->mutable_cross_user_sharing_public_key()->CopyFrom(
PublicKeyToProto(sender_public_key.value()));
sender_info->mutable_user_display_info()->CopyFrom(sender_display_info);
return specifics;
}
sync_pb::PasswordSharingInvitationData CreateDefaultIncomingInvitation(
const std::string& username_value,
const std::string& password_value) {
sync_pb::PasswordSharingInvitationData password_invitation_data;
sync_pb::PasswordSharingInvitationData::PasswordGroupData*
password_group_data =
password_invitation_data.mutable_password_group_data();
password_group_data->set_username_value(username_value);
password_group_data->set_password_value(password_value);
sync_pb::PasswordSharingInvitationData::PasswordGroupElementData*
element_data = password_group_data->add_element_data();
element_data->set_signon_realm(kSignonRealm);
element_data->set_origin(kOrigin);
element_data->set_username_element(kUsernameElement);
element_data->set_password_element(kPasswordElement);
element_data->set_display_name(kPasswordDisplayName);
element_data->set_avatar_url(kPasswordAvatarUrl);
return password_invitation_data;
}
sync_pb::UserDisplayInfo CreateDefaultSenderDisplayInfo() {
sync_pb::UserDisplayInfo sender_display_info;
sender_display_info.set_email(kSenderEmail);
sender_display_info.set_display_name(kSenderDisplayName);
sender_display_info.set_profile_image_url(kSenderProfileImageUrl);
return sender_display_info;
}
} // namespace password_sharing_helper
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