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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/protocol/me2me_host_authenticator_factory.h"
#include <memory>
#include <utility>
#include "base/base64.h"
#include "base/functional/bind.h"
#include "base/memory/ptr_util.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "remoting/base/rsa_key_pair.h"
#include "remoting/protocol/channel_authenticator.h"
#include "remoting/protocol/host_authentication_config.h"
#include "remoting/protocol/negotiating_host_authenticator.h"
#include "remoting/protocol/rejecting_authenticator.h"
#include "remoting/signaling/signaling_address.h"
#include "remoting/signaling/signaling_id_util.h"
#include "third_party/libjingle_xmpp/xmllite/xmlelement.h"
namespace remoting::protocol {
namespace {
using Authenticator::RejectionReason::INVALID_ACCOUNT_ID;
using Authenticator::RejectionReason::INVALID_CREDENTIALS;
} // namespace
Me2MeHostAuthenticatorFactory::Me2MeHostAuthenticatorFactory(
CheckAccessPermissionCallback check_access_permission_callback,
std::unique_ptr<HostAuthenticationConfig> config)
: check_access_permission_callback_(check_access_permission_callback),
config_(std::move(config)) {}
Me2MeHostAuthenticatorFactory::~Me2MeHostAuthenticatorFactory() = default;
std::unique_ptr<Authenticator>
Me2MeHostAuthenticatorFactory::CreateAuthenticator(
const std::string& original_local_jid,
const std::string& original_remote_jid) {
std::string local_jid = NormalizeSignalingId(original_local_jid);
std::string remote_jid = NormalizeSignalingId(original_remote_jid);
// Verify that the client's jid is an ASCII string.
auto parts = base::SplitStringOnce(remote_jid, '/');
if (!base::IsStringASCII(remote_jid) || !parts) {
return std::make_unique<RejectingAuthenticator>(
INVALID_CREDENTIALS,
base::StringPrintf(
"Rejecting incoming connection from %s: Invalid signaling id.",
remote_jid));
}
auto [email_address, _] = *parts;
if (!check_access_permission_callback_.Run(email_address)) {
return std::make_unique<RejectingAuthenticator>(
INVALID_CREDENTIALS,
base::StringPrintf("Permission check failed for email %s.",
email_address));
}
if (!config_->local_cert.empty() && config_->key_pair.get()) {
std::string normalized_local_jid = NormalizeSignalingId(local_jid);
std::string normalized_remote_jid = NormalizeSignalingId(remote_jid);
return std::make_unique<NegotiatingHostAuthenticator>(
normalized_local_jid, normalized_remote_jid,
std::make_unique<HostAuthenticationConfig>(*config_));
}
return std::make_unique<RejectingAuthenticator>(
INVALID_CREDENTIALS, "Invalid HostAuthenticationConfig.");
}
} // namespace remoting::protocol
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