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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/proxy/mojo_proxy_resolver_impl.h"
#include "base/stl_util.h"
#include "mojo/common/url_type_converters.h"
#include "net/base/net_errors.h"
#include "net/log/net_log.h"
#include "net/proxy/load_state_change_coalescer.h"
#include "net/proxy/mojo_proxy_type_converters.h"
#include "net/proxy/proxy_info.h"
#include "net/proxy/proxy_resolver_script_data.h"
namespace net {
namespace {
const int kLoadStateChangeCoalesceTimeoutMilliseconds = 10;
}
class MojoProxyResolverImpl::Job : public mojo::ErrorHandler {
public:
Job(interfaces::ProxyResolverRequestClientPtr client,
MojoProxyResolverImpl* resolver,
const GURL& url);
~Job() override;
void Start();
// Invoked when the LoadState for this job changes.
void LoadStateChanged(LoadState load_state);
net::ProxyResolver::RequestHandle request_handle() { return request_handle_; }
private:
// mojo::ErrorHandler override.
// This is invoked in response to the client disconnecting, indicating
// cancellation.
void OnConnectionError() override;
void GetProxyDone(int error);
void SendLoadStateChanged(LoadState load_state);
MojoProxyResolverImpl* resolver_;
interfaces::ProxyResolverRequestClientPtr client_;
ProxyInfo result_;
GURL url_;
net::ProxyResolver::RequestHandle request_handle_;
bool done_;
LoadStateChangeCoalescer load_state_change_coalescer_;
DISALLOW_COPY_AND_ASSIGN(Job);
};
MojoProxyResolverImpl::MojoProxyResolverImpl(
scoped_ptr<net::ProxyResolver> resolver)
: resolver_(resolver.Pass()) {
DCHECK(resolver_->expects_pac_bytes());
}
MojoProxyResolverImpl::~MojoProxyResolverImpl() {
if (!set_pac_script_requests_.empty())
resolver_->CancelSetPacScript();
STLDeleteElements(&resolve_jobs_);
}
void MojoProxyResolverImpl::LoadStateChanged(
net::ProxyResolver::RequestHandle handle,
LoadState load_state) {
auto it = request_handle_to_job_.find(handle);
DCHECK(it != request_handle_to_job_.end());
it->second->LoadStateChanged(load_state);
}
void MojoProxyResolverImpl::SetPacScript(
const mojo::String& data,
const mojo::Callback<void(int32_t)>& callback) {
DVLOG(1) << "SetPacScript(" << data << ")";
set_pac_script_requests_.push(
SetPacScriptRequest(ProxyResolverScriptData::FromUTF8(data), callback));
if (set_pac_script_requests_.size() == 1)
StartSetPacScript();
}
void MojoProxyResolverImpl::GetProxyForUrl(
const mojo::String& url,
interfaces::ProxyResolverRequestClientPtr client) {
DVLOG(1) << "GetProxyForUrl(" << url << ")";
Job* job = new Job(client.Pass(), this, url.To<GURL>());
bool inserted = resolve_jobs_.insert(job).second;
DCHECK(inserted);
job->Start();
}
void MojoProxyResolverImpl::DeleteJob(Job* job) {
if (job->request_handle())
request_handle_to_job_.erase(job->request_handle());
size_t num_erased = resolve_jobs_.erase(job);
DCHECK(num_erased);
delete job;
}
void MojoProxyResolverImpl::StartSetPacScript() {
DCHECK(!set_pac_script_requests_.empty());
int result = resolver_->SetPacScript(
set_pac_script_requests_.front().script_data,
base::Bind(&MojoProxyResolverImpl::SetPacScriptDone,
base::Unretained(this)));
if (result != ERR_IO_PENDING)
SetPacScriptDone(result);
}
void MojoProxyResolverImpl::SetPacScriptDone(int result) {
DVLOG(1) << "SetPacScript finished with error " << result;
DCHECK(!set_pac_script_requests_.empty());
set_pac_script_requests_.front().callback.Run(result);
set_pac_script_requests_.pop();
if (!set_pac_script_requests_.empty())
StartSetPacScript();
}
MojoProxyResolverImpl::Job::Job(
interfaces::ProxyResolverRequestClientPtr client,
MojoProxyResolverImpl* resolver,
const GURL& url)
: resolver_(resolver),
client_(client.Pass()),
url_(url),
request_handle_(nullptr),
done_(false),
load_state_change_coalescer_(
base::Bind(&MojoProxyResolverImpl::Job::SendLoadStateChanged,
base::Unretained(this)),
base::TimeDelta::FromMilliseconds(
kLoadStateChangeCoalesceTimeoutMilliseconds),
LOAD_STATE_RESOLVING_PROXY_FOR_URL) {
}
MojoProxyResolverImpl::Job::~Job() {
if (request_handle_ && !done_)
resolver_->resolver_->CancelRequest(request_handle_);
}
void MojoProxyResolverImpl::Job::Start() {
int result = resolver_->resolver_->GetProxyForURL(
url_, &result_, base::Bind(&Job::GetProxyDone, base::Unretained(this)),
&request_handle_, BoundNetLog());
if (result != ERR_IO_PENDING) {
GetProxyDone(result);
return;
}
client_.set_error_handler(this);
resolver_->request_handle_to_job_.insert(
std::make_pair(request_handle_, this));
}
void MojoProxyResolverImpl::Job::LoadStateChanged(LoadState load_state) {
load_state_change_coalescer_.LoadStateChanged(load_state);
}
void MojoProxyResolverImpl::Job::GetProxyDone(int error) {
done_ = true;
DVLOG(1) << "GetProxyForUrl(" << url_ << ") finished with error " << error
<< ". " << result_.proxy_list().size() << " Proxies returned:";
for (const auto& proxy : result_.proxy_list().GetAll()) {
DVLOG(1) << proxy.ToURI();
}
mojo::Array<interfaces::ProxyServerPtr> result;
if (error == OK) {
result = mojo::Array<interfaces::ProxyServerPtr>::From(
result_.proxy_list().GetAll());
}
client_->ReportResult(error, result.Pass());
resolver_->DeleteJob(this);
}
void MojoProxyResolverImpl::Job::OnConnectionError() {
resolver_->DeleteJob(this);
}
void MojoProxyResolverImpl::Job::SendLoadStateChanged(LoadState load_state) {
client_->LoadStateChanged(load_state);
}
MojoProxyResolverImpl::SetPacScriptRequest::SetPacScriptRequest(
const scoped_refptr<ProxyResolverScriptData>& script_data,
const mojo::Callback<void(int32_t)>& callback)
: script_data(script_data), callback(callback) {
}
MojoProxyResolverImpl::SetPacScriptRequest::~SetPacScriptRequest() = default;
} // namespace net
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