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// Copyright (c) 2010 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/scoped_ptr.h"
#include "net/base/cert_verify_result.h"
#include "net/base/completion_callback.h"
#include "net/base/net_log.h"
#include "net/base/nss_memio.h"
#include "net/base/ssl_config_service.h"
#include "net/socket/ssl_client_socket.h"
namespace net {
class BoundNetLog;
class CertVerifier;
class X509Certificate;
// An SSL client socket implemented with Mozilla NSS.
class SSLClientSocketNSS : public SSLClientSocket {
public:
// Takes ownership of the transport_socket, which may already be connected.
// The given hostname will be compared with the name(s) in the server's
// certificate during the SSL handshake. ssl_config specifies the SSL
// settings.
SSLClientSocketNSS(ClientSocket* transport_socket,
const std::string& hostname,
const SSLConfig& ssl_config);
~SSLClientSocketNSS();
// SSLClientSocket methods:
virtual void GetSSLInfo(SSLInfo* ssl_info);
virtual void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info);
virtual NextProtoStatus GetNextProto(std::string* proto);
// ClientSocket methods:
virtual int Connect(CompletionCallback* callback);
virtual void Disconnect();
virtual bool IsConnected() const;
virtual bool IsConnectedAndIdle() const;
virtual int GetPeerAddress(AddressList* address) const;
virtual const BoundNetLog& NetLog() const { return net_log_; }
// Socket methods:
virtual int Read(IOBuffer* buf, int buf_len, CompletionCallback* callback);
virtual int Write(IOBuffer* buf, int buf_len, CompletionCallback* callback);
virtual bool SetReceiveBufferSize(int32 size);
virtual bool SetSendBufferSize(int32 size);
void set_handshake_callback_called() { handshake_callback_called_ = true; }
private:
// Initializes NSS SSL options. Returns a net error code.
int InitializeSSLOptions();
void InvalidateSessionIfBadCertificate();
X509Certificate* UpdateServerCert();
void CheckSecureRenegotiation() const;
void DoReadCallback(int result);
void DoWriteCallback(int result);
void DoConnectCallback(int result);
void OnHandshakeIOComplete(int result);
void OnSendComplete(int result);
void OnRecvComplete(int result);
int DoHandshakeLoop(int last_io_result);
int DoReadLoop(int result);
int DoWriteLoop(int result);
int DoHandshake();
int DoVerifyCert(int result);
int DoVerifyCertComplete(int result);
int DoPayloadRead();
int DoPayloadWrite();
int Init();
bool DoTransportIO();
int BufferSend(void);
int BufferRecv(void);
void BufferSendComplete(int result);
void BufferRecvComplete(int result);
// NSS calls this when checking certificates. We pass 'this' as the first
// argument.
static SECStatus OwnAuthCertHandler(void* arg, PRFileDesc* socket,
PRBool checksig, PRBool is_server);
// NSS calls this when client authentication is requested.
static SECStatus ClientAuthHandler(void* arg,
PRFileDesc* socket,
CERTDistNames* ca_names,
CERTCertificate** result_certificate,
SECKEYPrivateKey** result_private_key);
// NSS calls this when handshake is completed. We pass 'this' as the second
// argument.
static void HandshakeCallback(PRFileDesc* socket, void* arg);
CompletionCallbackImpl<SSLClientSocketNSS> buffer_send_callback_;
CompletionCallbackImpl<SSLClientSocketNSS> buffer_recv_callback_;
bool transport_send_busy_;
bool transport_recv_busy_;
scoped_refptr<IOBuffer> recv_buffer_;
CompletionCallbackImpl<SSLClientSocketNSS> handshake_io_callback_;
scoped_ptr<ClientSocket> transport_;
std::string hostname_;
SSLConfig ssl_config_;
CompletionCallback* user_connect_callback_;
CompletionCallback* user_read_callback_;
CompletionCallback* user_write_callback_;
// Used by Read function.
scoped_refptr<IOBuffer> user_read_buf_;
int user_read_buf_len_;
// Used by Write function.
scoped_refptr<IOBuffer> user_write_buf_;
int user_write_buf_len_;
// Set when handshake finishes. The server certificate is first received
// from NSS as an NSS certificate handle (server_cert_nss_), and then
// converted into an X509Certificate object (server_cert_).
scoped_refptr<X509Certificate> server_cert_;
CERTCertificate* server_cert_nss_;
CertVerifyResult server_cert_verify_result_;
// Stores client authentication information between ClientAuthHandler and
// GetSSLCertRequestInfo calls.
std::vector<scoped_refptr<X509Certificate> > client_certs_;
bool client_auth_cert_needed_;
scoped_ptr<CertVerifier> verifier_;
// True if NSS has called HandshakeCallback.
bool handshake_callback_called_;
// True if the SSL handshake has been completed.
bool completed_handshake_;
enum State {
STATE_NONE,
STATE_HANDSHAKE,
STATE_VERIFY_CERT,
STATE_VERIFY_CERT_COMPLETE,
};
State next_handshake_state_;
// The NSS SSL state machine
PRFileDesc* nss_fd_;
// Buffers for the network end of the SSL state machine
memio_Private* nss_bufs_;
BoundNetLog net_log_;
#if defined(OS_WIN)
// A CryptoAPI in-memory certificate store. We use it for two purposes:
// 1. Import server certificates into this store so that we can verify and
// display the certificates using CryptoAPI.
// 2. Copy client certificates from the "MY" system certificate store into
// this store so that we can close the system store when we finish
// searching for client certificates.
static HCERTSTORE cert_store_;
#endif
};
} // namespace net
#endif // NET_SOCKET_SSL_CLIENT_SOCKET_NSS_H_
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