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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/time/time.h"
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/390223051): Remove C-library calls to fix the errors.
#pragma allow_unsafe_libc_calls
#endif
#include "remoting/test/session_authz_playground.h"
#include <cstdio>
#include <cstdlib>
#include <memory>
#include <string_view>
#include <vector>
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/functional/bind.h"
#include "base/memory/scoped_refptr.h"
#include "base/run_loop.h"
#include "base/task/bind_post_task.h"
#include "base/task/single_thread_task_runner.h"
#include "remoting/base/certificate_helpers.h"
#include "remoting/base/oauth_token_getter.h"
#include "remoting/base/oauth_token_getter_impl.h"
#include "remoting/base/url_request_context_getter.h"
#include "remoting/host/host_config.h"
#include "remoting/proto/session_authz_service.h"
#include "remoting/test/cli_util.h"
namespace remoting {
namespace {
constexpr char kOAuthScope[] =
"https://www.googleapis.com/auth/chromoting.me2me.host";
void PrintErrorAndExit(const std::string& api_name, const HttpStatus& status) {
fprintf(stderr, "Failed to call API: %s, error code: %d\n", api_name.data(),
static_cast<int>(status.error_code()));
fprintf(stderr, "%s\n", status.error_message().data());
fprintf(stderr, "%s\n", status.response_body().data());
std::exit(1);
}
} // namespace
SessionAuthzPlayground::SessionAuthzPlayground() {
auto url_request_context_getter =
base::MakeRefCounted<URLRequestContextGetter>(
base::SingleThreadTaskRunner::GetCurrentDefault());
url_loader_factory_owner_ =
std::make_unique<network::TransitionalURLLoaderFactoryOwner>(
url_request_context_getter, /* is_trusted= */ true);
}
SessionAuthzPlayground::~SessionAuthzPlayground() = default;
void SessionAuthzPlayground::Start() {
auto* cmd_line = base::CommandLine::ForCurrentProcess();
base::CommandLine::StringVector args = cmd_line->GetArgs();
base::FilePath host_config_file_path;
if (args.size() == 1) {
host_config_file_path = base::FilePath(args[0]);
}
if (host_config_file_path.empty()) {
printf("Usage: %s <path-to-host-config-json>\n",
cmd_line->GetProgram().MaybeAsASCII().c_str());
std::exit(1);
}
service_client_ = std::make_unique<CorpSessionAuthzServiceClient>(
url_loader_factory_owner_->GetURLLoaderFactory(),
CreateClientCertStoreInstance(),
CreateOAuthTokenGetter(host_config_file_path),
/* support_id= */ std::string_view());
run_loop_ = std::make_unique<base::RunLoop>();
GenerateHostToken();
run_loop_->Run();
}
void SessionAuthzPlayground::GenerateHostToken() {
printf("Fetching host token...\n");
service_client_->GenerateHostToken(
base::BindOnce(
[](const HttpStatus& status,
std::unique_ptr<internal::GenerateHostTokenResponseStruct>
response) {
if (!status.ok()) {
PrintErrorAndExit("GenerateHostToken", status);
}
if (!response) {
fprintf(stderr, "No response was received.\n");
}
printf("Host token: %s\n", response->host_token.data());
printf("Session ID: %s\n", response->session_id.data());
return response->session_id;
})
.Then(base::BindPostTaskToCurrentDefault(
base::BindOnce(&SessionAuthzPlayground::VerifySessionToken,
base::Unretained(this)))));
}
void SessionAuthzPlayground::VerifySessionToken(const std::string& session_id) {
printf("Enter session token generated by the client: ");
std::string session_token = test::ReadString();
service_client_->VerifySessionToken(
session_token,
base::BindOnce(
[](const std::string& session_id, const HttpStatus& status,
std::unique_ptr<internal::VerifySessionTokenResponseStruct>
response) {
if (!status.ok()) {
PrintErrorAndExit("VerifySessionToken", status);
}
if (!response) {
fprintf(stderr, "No response was received.\n");
}
printf("Reauth token: %s\n", response->session_reauth_token.data());
printf("Reauth token expires in: %fs\n",
response->session_reauth_token_lifetime.InSecondsF());
printf("Session ID: %s\n", response->session_id.data());
printf("Shared secret: %s\n", response->shared_secret.data());
if (session_id != response->session_id) {
fprintf(stderr, "Unexpected session ID. Expected: %s\n",
session_id.data());
std::exit(1);
}
return response->session_reauth_token;
},
session_id)
.Then(base::BindPostTaskToCurrentDefault(
base::BindPostTaskToCurrentDefault(
base::BindOnce(&SessionAuthzPlayground::ReauthorizeHost,
base::Unretained(this), session_id)))));
}
void SessionAuthzPlayground::ReauthorizeHost(const std::string& session_id,
const std::string& reauth_token) {
printf("Reauthorize host? [y/N]: ");
bool shouldReauthorize = test::ReadYNBool();
if (!shouldReauthorize) {
run_loop_->Quit();
}
service_client_->ReauthorizeHost(
reauth_token, session_id, base::TimeTicks::Max(),
base::BindOnce([](const HttpStatus& status,
std::unique_ptr<internal::ReauthorizeHostResponseStruct>
response) {
if (!status.ok()) {
PrintErrorAndExit("ReauthorizeHost", status);
}
if (!response) {
fprintf(stderr, "No response was received.\n");
}
printf("Reauth token: %s\n", response->session_reauth_token.data());
printf("Reauth token expires in: %fs\n",
response->session_reauth_token_lifetime.InSecondsF());
return response->session_reauth_token;
})
.Then(base::BindPostTaskToCurrentDefault(
base::BindOnce(&SessionAuthzPlayground::ReauthorizeHost,
base::Unretained(this), session_id))));
}
std::unique_ptr<OAuthTokenGetter>
SessionAuthzPlayground::CreateOAuthTokenGetter(
const base::FilePath& host_config_file_path) {
auto host_config_dict = HostConfigFromJsonFile(host_config_file_path);
if (!host_config_dict.has_value()) {
fprintf(stderr, "Cannot read host config file: %s\n",
host_config_file_path.MaybeAsASCII().data());
std::exit(1);
}
const std::string* refresh_token =
host_config_dict->FindString(kOAuthRefreshTokenConfigPath);
if (!refresh_token) {
fprintf(stderr, "Cannot find OAuth refresh token from host config file.\n");
std::exit(1);
}
const std::string* service_account_email =
host_config_dict->FindString(kServiceAccountConfigPath);
if (!service_account_email) {
fprintf(stderr, "Cannot find service account email.\n");
std::exit(1);
}
auto oauth_credentials =
std::make_unique<OAuthTokenGetter::OAuthAuthorizationCredentials>(
*service_account_email, *refresh_token,
/* is_service_account= */ true,
std::vector<std::string>{kOAuthScope});
return std::make_unique<OAuthTokenGetterImpl>(
std::move(oauth_credentials),
url_loader_factory_owner_->GetURLLoaderFactory(), false);
}
} // namespace remoting
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