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// Copyright 2015 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/certificate_provider/certificate_requests.h"
#include <memory>
#include <set>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
namespace chromeos {
namespace certificate_provider {
namespace {
const int kGetCertificatesTimeoutInMinutes = 5;
} // namespace
// Holds state for a single certificate request.
struct CertificateRequests::CertificateRequestState {
CertificateRequestState() = default;
~CertificateRequestState() = default;
// Extensions that are too slow are eventually dropped from a request.
base::OneShotTimer timeout;
// Extensions that this request is still waiting for.
std::set<std::string> pending_extensions;
// The callback that must be run with the final list of certificates.
base::OnceCallback<void(net::ClientCertIdentityList)> callback;
};
CertificateRequests::CertificateRequests() = default;
CertificateRequests::~CertificateRequests() = default;
int CertificateRequests::AddRequest(
const std::vector<std::string>& extension_ids,
base::OnceCallback<void(net::ClientCertIdentityList)> callback,
base::OnceCallback<void(int)> timeout_callback) {
auto state = std::make_unique<CertificateRequestState>();
state->callback = std::move(callback);
state->pending_extensions.insert(extension_ids.begin(), extension_ids.end());
const int request_id = next_free_request_id_++;
state->timeout.Start(FROM_HERE,
base::Minutes(kGetCertificatesTimeoutInMinutes),
base::BindOnce(std::move(timeout_callback), request_id));
const auto insert_result =
requests_.insert(std::make_pair(request_id, std::move(state)));
DCHECK(insert_result.second) << "request id already in use.";
return request_id;
}
bool CertificateRequests::SetExtensionReplyReceived(
const std::string& extension_id,
int request_id,
bool* completed) {
*completed = false;
const auto it = requests_.find(request_id);
if (it == requests_.end())
return false;
CertificateRequestState& state = *it->second;
if (state.pending_extensions.erase(extension_id) == 0)
return false;
*completed = state.pending_extensions.empty();
return true;
}
bool CertificateRequests::RemoveRequest(
int request_id,
base::OnceCallback<void(net::ClientCertIdentityList)>* callback) {
const auto it = requests_.find(request_id);
if (it == requests_.end())
return false;
CertificateRequestState& state = *it->second;
*callback = std::move(state.callback);
requests_.erase(it);
DVLOG(2) << "Completed certificate request " << request_id;
return true;
}
std::vector<int> CertificateRequests::DropExtension(
const std::string& extension_id) {
std::vector<int> completed_requests;
for (const auto& entry : requests_) {
DVLOG(2) << "Remove extension " << extension_id
<< " from certificate request " << entry.first;
CertificateRequestState& state = *entry.second.get();
state.pending_extensions.erase(extension_id);
if (state.pending_extensions.empty())
completed_requests.push_back(entry.first);
}
return completed_requests;
}
} // namespace certificate_provider
} // namespace chromeos
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