blob: d6ec56fd406650cdfdf7d5b0ed5ba643e1dc687d [file] [log] [blame]
/*
* Copyright 2007 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/base/autodetectproxy.h"
#include "webrtc/base/httpcommon.h"
#include "webrtc/base/httpcommon-inl.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/base/socketadapters.h"
#include "webrtc/base/ssladapter.h"
#include "webrtc/base/sslsocketfactory.h"
namespace rtc {
///////////////////////////////////////////////////////////////////////////////
// ProxySocketAdapter
// TODO: Consider combining AutoDetectProxy and ProxySocketAdapter. I think
// the socket adapter is the more appropriate idiom for automatic proxy
// detection. We may or may not want to combine proxydetect.* as well.
///////////////////////////////////////////////////////////////////////////////
class ProxySocketAdapter : public AsyncSocketAdapter {
public:
ProxySocketAdapter(SslSocketFactory* factory, int family, int type)
: AsyncSocketAdapter(NULL), factory_(factory), family_(family),
type_(type), detect_(NULL) {
}
~ProxySocketAdapter() override {
Close();
}
int Connect(const SocketAddress& addr) override {
ASSERT(NULL == detect_);
ASSERT(NULL == socket_);
remote_ = addr;
if (remote_.IsAnyIP() && remote_.hostname().empty()) {
LOG_F(LS_ERROR) << "Empty address";
return SOCKET_ERROR;
}
Url<char> url("/", remote_.HostAsURIString(), remote_.port());
detect_ = new AutoDetectProxy(factory_->agent_);
detect_->set_server_url(url.url());
detect_->SignalWorkDone.connect(this,
&ProxySocketAdapter::OnProxyDetectionComplete);
detect_->Start();
return SOCKET_ERROR;
}
int GetError() const override {
if (socket_) {
return socket_->GetError();
}
return detect_ ? EWOULDBLOCK : EADDRNOTAVAIL;
}
int Close() override {
if (socket_) {
return socket_->Close();
}
if (detect_) {
detect_->Destroy(false);
detect_ = NULL;
}
return 0;
}
ConnState GetState() const override {
if (socket_) {
return socket_->GetState();
}
return detect_ ? CS_CONNECTING : CS_CLOSED;
}
private:
// AutoDetectProxy Slots
void OnProxyDetectionComplete(SignalThread* thread) {
ASSERT(detect_ == thread);
Attach(factory_->CreateProxySocket(detect_->proxy(), family_, type_));
detect_->Release();
detect_ = NULL;
if (0 == AsyncSocketAdapter::Connect(remote_)) {
SignalConnectEvent(this);
} else if (!IsBlockingError(socket_->GetError())) {
SignalCloseEvent(this, socket_->GetError());
}
}
SslSocketFactory* factory_;
int family_;
int type_;
SocketAddress remote_;
AutoDetectProxy* detect_;
};
///////////////////////////////////////////////////////////////////////////////
// SslSocketFactory
///////////////////////////////////////////////////////////////////////////////
SslSocketFactory::SslSocketFactory(SocketFactory* factory,
const std::string& user_agent)
: factory_(factory),
agent_(user_agent),
autodetect_proxy_(true),
force_connect_(false),
logging_level_(LS_VERBOSE),
binary_mode_(false),
ignore_bad_cert_(false) {
}
SslSocketFactory::~SslSocketFactory() = default;
Socket* SslSocketFactory::CreateSocket(int type) {
return CreateSocket(AF_INET, type);
}
Socket* SslSocketFactory::CreateSocket(int family, int type) {
return factory_->CreateSocket(family, type);
}
AsyncSocket* SslSocketFactory::CreateAsyncSocket(int type) {
return CreateAsyncSocket(AF_INET, type);
}
AsyncSocket* SslSocketFactory::CreateAsyncSocket(int family, int type) {
if (autodetect_proxy_) {
return new ProxySocketAdapter(this, family, type);
} else {
return CreateProxySocket(proxy_, family, type);
}
}
AsyncSocket* SslSocketFactory::CreateProxySocket(const ProxyInfo& proxy,
int family,
int type) {
AsyncSocket* socket = factory_->CreateAsyncSocket(family, type);
if (!socket)
return NULL;
// Binary logging happens at the lowest level
if (!logging_label_.empty() && binary_mode_) {
socket = new LoggingSocketAdapter(socket, logging_level_,
logging_label_.c_str(), binary_mode_);
}
if (proxy.type) {
AsyncSocket* proxy_socket = 0;
if (proxy_.type == PROXY_SOCKS5) {
proxy_socket = new AsyncSocksProxySocket(socket, proxy.address,
proxy.username, proxy.password);
} else {
// Note: we are trying unknown proxies as HTTPS currently
AsyncHttpsProxySocket* http_proxy =
new AsyncHttpsProxySocket(socket, agent_, proxy.address,
proxy.username, proxy.password);
http_proxy->SetForceConnect(force_connect_ || !hostname_.empty());
proxy_socket = http_proxy;
}
if (!proxy_socket) {
delete socket;
return NULL;
}
socket = proxy_socket; // for our purposes the proxy is now the socket
}
if (!hostname_.empty()) {
rtc::scoped_ptr<SSLAdapter> ssl_adapter(SSLAdapter::Create(socket));
if (!ssl_adapter) {
LOG_F(LS_ERROR) << "SSL unavailable";
delete socket;
return NULL;
}
ssl_adapter->set_ignore_bad_cert(ignore_bad_cert_);
if (ssl_adapter->StartSSL(hostname_.c_str(), true) != 0) {
LOG_F(LS_ERROR) << "SSL failed to start.";
return NULL;
}
socket = ssl_adapter.release();
}
// Regular logging occurs at the highest level
if (!logging_label_.empty() && !binary_mode_) {
socket = new LoggingSocketAdapter(socket, logging_level_,
logging_label_.c_str(), binary_mode_);
}
return socket;
}
///////////////////////////////////////////////////////////////////////////////
} // namespace rtc