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// Copyright (c) 2012 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.
#ifndef NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
#define NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
#include <certt.h>
#include <keyt.h>
#include <nspr.h>
#include <nss.h>
#include <string>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "net/base/completion_callback.h"
#include "net/base/host_port_pair.h"
#include "net/base/net_export.h"
#include "net/base/net_log.h"
#include "net/base/nss_memio.h"
#include "net/cert/cert_verify_result.h"
#include "net/cert/ct_verify_result.h"
#include "net/cert/x509_certificate.h"
#include "net/socket/ssl_client_socket.h"
#include "net/ssl/channel_id_service.h"
#include "net/ssl/ssl_config_service.h"
namespace base {
class SequencedTaskRunner;
}
namespace net {
class BoundNetLog;
class CertPolicyEnforcer;
class CertVerifier;
class ChannelIDService;
class CTVerifier;
class ClientSocketHandle;
class SingleRequestCertVerifier;
class TransportSecurityState;
class X509Certificate;
// An SSL client socket implemented with Mozilla NSS.
class SSLClientSocketNSS : public SSLClientSocket {
public:
// Takes ownership of the |transport_socket|, which must already be connected.
// The hostname specified in |host_and_port| will be compared with the name(s)
// in the server's certificate during the SSL handshake. If SSL client
// authentication is requested, the host_and_port field of SSLCertRequestInfo
// will be populated with |host_and_port|. |ssl_config| specifies
// the SSL settings.
//
// Because calls to NSS may block, such as due to needing to access slow
// hardware or needing to synchronously unlock protected tokens, calls to
// NSS may optionally be run on a dedicated thread. If synchronous/blocking
// behaviour is desired, for performance or compatibility, the current task
// runner should be supplied instead.
SSLClientSocketNSS(base::SequencedTaskRunner* nss_task_runner,
scoped_ptr<ClientSocketHandle> transport_socket,
const HostPortPair& host_and_port,
const SSLConfig& ssl_config,
const SSLClientSocketContext& context);
~SSLClientSocketNSS() override;
// SSLClientSocket implementation.
std::string GetSessionCacheKey() const override;
bool InSessionCache() const override;
void SetHandshakeCompletionCallback(const base::Closure& callback) override;
void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;
NextProtoStatus GetNextProto(std::string* proto) override;
// SSLSocket implementation.
int ExportKeyingMaterial(const base::StringPiece& label,
bool has_context,
const base::StringPiece& context,
unsigned char* out,
unsigned int outlen) override;
int GetTLSUniqueChannelBinding(std::string* out) override;
// StreamSocket implementation.
int Connect(const CompletionCallback& callback) override;
void Disconnect() override;
bool IsConnected() const override;
bool IsConnectedAndIdle() const override;
int GetPeerAddress(IPEndPoint* address) const override;
int GetLocalAddress(IPEndPoint* address) const override;
const BoundNetLog& NetLog() const override;
void SetSubresourceSpeculation() override;
void SetOmniboxSpeculation() override;
bool WasEverUsed() const override;
bool UsingTCPFastOpen() const override;
bool GetSSLInfo(SSLInfo* ssl_info) override;
// Socket implementation.
int Read(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) override;
int Write(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) override;
int SetReceiveBufferSize(int32 size) override;
int SetSendBufferSize(int32 size) override;
ChannelIDService* GetChannelIDService() const override;
protected:
// SSLClientSocket implementation.
scoped_refptr<X509Certificate> GetUnverifiedServerCertificateChain()
const override;
private:
// Helper class to handle marshalling any NSS interaction to and from the
// NSS and network task runners. Not every call needs to happen on the Core
class Core;
enum State {
STATE_NONE,
STATE_HANDSHAKE,
STATE_HANDSHAKE_COMPLETE,
STATE_VERIFY_CERT,
STATE_VERIFY_CERT_COMPLETE,
};
int Init();
void InitCore();
// Initializes NSS SSL options. Returns a net error code.
int InitializeSSLOptions();
// Initializes the socket peer name in SSL. Returns a net error code.
int InitializeSSLPeerName();
void DoConnectCallback(int result);
void OnHandshakeIOComplete(int result);
int DoHandshakeLoop(int last_io_result);
int DoHandshake();
int DoHandshakeComplete(int result);
int DoVerifyCert(int result);
int DoVerifyCertComplete(int result);
void VerifyCT();
// The following methods are for debugging bug 65948. Will remove this code
// after fixing bug 65948.
void EnsureThreadIdAssigned() const;
bool CalledOnValidThread() const;
// Adds the SignedCertificateTimestamps from ct_verify_result_ to |ssl_info|.
// SCTs are held in three separate vectors in ct_verify_result, each
// vetor representing a particular verification state, this method associates
// each of the SCTs with the corresponding SCTVerifyStatus as it adds it to
// the |ssl_info|.signed_certificate_timestamps list.
void AddSCTInfoToSSLInfo(SSLInfo* ssl_info) const;
// The task runner used to perform NSS operations.
scoped_refptr<base::SequencedTaskRunner> nss_task_runner_;
scoped_ptr<ClientSocketHandle> transport_;
HostPortPair host_and_port_;
SSLConfig ssl_config_;
scoped_refptr<Core> core_;
CompletionCallback user_connect_callback_;
CertVerifyResult server_cert_verify_result_;
CertVerifier* const cert_verifier_;
scoped_ptr<SingleRequestCertVerifier> verifier_;
// Certificate Transparency: Verifier and result holder.
ct::CTVerifyResult ct_verify_result_;
CTVerifier* cert_transparency_verifier_;
// The service for retrieving Channel ID keys. May be NULL.
ChannelIDService* channel_id_service_;
// ssl_session_cache_shard_ is an opaque string that partitions the SSL
// session cache. i.e. sessions created with one value will not attempt to
// resume on the socket with a different value.
const std::string ssl_session_cache_shard_;
// True if the SSL handshake has been completed.
bool completed_handshake_;
State next_handshake_state_;
// The NSS SSL state machine. This is owned by |core_|.
// TODO(rsleevi): http://crbug.com/130616 - Remove this member once
// ExportKeyingMaterial is updated to be asynchronous.
PRFileDesc* nss_fd_;
BoundNetLog net_log_;
base::TimeTicks start_cert_verification_time_;
TransportSecurityState* transport_security_state_;
CertPolicyEnforcer* const policy_enforcer_;
// pinning_failure_log contains a message produced by
// TransportSecurityState::CheckPublicKeyPins in the event of a
// pinning failure. It is a (somewhat) human-readable string.
std::string pinning_failure_log_;
// The following two variables are added for debugging bug 65948. Will
// remove this code after fixing bug 65948.
// Added the following code Debugging in release mode.
mutable base::Lock lock_;
// This is mutable so that CalledOnValidThread can set it.
// It's guarded by |lock_|.
mutable base::PlatformThreadId valid_thread_id_;
};
} // namespace net
#endif // NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
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